1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * This is the new netlink-based wireless configuration interface.
4 *
5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright 2015-2017 Intel Deutschland GmbH
8 * Copyright (C) 2018-2023 Intel Corporation
9 */
10
11 #include <linux/if.h>
12 #include <linux/module.h>
13 #include <linux/err.h>
14 #include <linux/slab.h>
15 #include <linux/list.h>
16 #include <linux/if_ether.h>
17 #include <linux/ieee80211.h>
18 #include <linux/nl80211.h>
19 #include <linux/rtnetlink.h>
20 #include <linux/netlink.h>
21 #include <linux/nospec.h>
22 #include <linux/etherdevice.h>
23 #include <linux/if_vlan.h>
24 #include <net/net_namespace.h>
25 #include <net/genetlink.h>
26 #include <net/cfg80211.h>
27 #include <net/sock.h>
28 #include <net/inet_connection_sock.h>
29 #include "core.h"
30 #include "nl80211.h"
31 #include "reg.h"
32 #include "rdev-ops.h"
33
34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
35 struct genl_info *info,
36 struct cfg80211_crypto_settings *settings,
37 int cipher_limit);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam;
41
42 /* multicast groups */
43 enum nl80211_multicast_groups {
44 NL80211_MCGRP_CONFIG,
45 NL80211_MCGRP_SCAN,
46 NL80211_MCGRP_REGULATORY,
47 NL80211_MCGRP_MLME,
48 NL80211_MCGRP_VENDOR,
49 NL80211_MCGRP_NAN,
50 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
51 };
52
53 static const struct genl_multicast_group nl80211_mcgrps[] = {
54 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
55 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
56 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
57 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
58 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
59 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
60 #ifdef CONFIG_NL80211_TESTMODE
61 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
62 #endif
63 };
64
65 /* returns ERR_PTR values */
66 static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct cfg80211_registered_device * rdev,struct net * netns,struct nlattr ** attrs)67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
68 struct net *netns, struct nlattr **attrs)
69 {
70 struct wireless_dev *result = NULL;
71 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
72 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
73 u64 wdev_id = 0;
74 int wiphy_idx = -1;
75 int ifidx = -1;
76
77 if (!have_ifidx && !have_wdev_id)
78 return ERR_PTR(-EINVAL);
79
80 if (have_ifidx)
81 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
82 if (have_wdev_id) {
83 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
84 wiphy_idx = wdev_id >> 32;
85 }
86
87 if (rdev) {
88 struct wireless_dev *wdev;
89
90 lockdep_assert_held(&rdev->wiphy.mtx);
91
92 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
93 if (have_ifidx && wdev->netdev &&
94 wdev->netdev->ifindex == ifidx) {
95 result = wdev;
96 break;
97 }
98 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
99 result = wdev;
100 break;
101 }
102 }
103
104 return result ?: ERR_PTR(-ENODEV);
105 }
106
107 ASSERT_RTNL();
108
109 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
110 struct wireless_dev *wdev;
111
112 if (wiphy_net(&rdev->wiphy) != netns)
113 continue;
114
115 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
116 continue;
117
118 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
119 if (have_ifidx && wdev->netdev &&
120 wdev->netdev->ifindex == ifidx) {
121 result = wdev;
122 break;
123 }
124 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
125 result = wdev;
126 break;
127 }
128 }
129
130 if (result)
131 break;
132 }
133
134 if (result)
135 return result;
136 return ERR_PTR(-ENODEV);
137 }
138
139 static struct cfg80211_registered_device *
__cfg80211_rdev_from_attrs(struct net * netns,struct nlattr ** attrs)140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
141 {
142 struct cfg80211_registered_device *rdev = NULL, *tmp;
143 struct net_device *netdev;
144
145 ASSERT_RTNL();
146
147 if (!attrs[NL80211_ATTR_WIPHY] &&
148 !attrs[NL80211_ATTR_IFINDEX] &&
149 !attrs[NL80211_ATTR_WDEV])
150 return ERR_PTR(-EINVAL);
151
152 if (attrs[NL80211_ATTR_WIPHY])
153 rdev = cfg80211_rdev_by_wiphy_idx(
154 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
155
156 if (attrs[NL80211_ATTR_WDEV]) {
157 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
158 struct wireless_dev *wdev;
159 bool found = false;
160
161 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
162 if (tmp) {
163 /* make sure wdev exists */
164 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
165 if (wdev->identifier != (u32)wdev_id)
166 continue;
167 found = true;
168 break;
169 }
170
171 if (!found)
172 tmp = NULL;
173
174 if (rdev && tmp != rdev)
175 return ERR_PTR(-EINVAL);
176 rdev = tmp;
177 }
178 }
179
180 if (attrs[NL80211_ATTR_IFINDEX]) {
181 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
182
183 netdev = __dev_get_by_index(netns, ifindex);
184 if (netdev) {
185 if (netdev->ieee80211_ptr)
186 tmp = wiphy_to_rdev(
187 netdev->ieee80211_ptr->wiphy);
188 else
189 tmp = NULL;
190
191 /* not wireless device -- return error */
192 if (!tmp)
193 return ERR_PTR(-EINVAL);
194
195 /* mismatch -- return error */
196 if (rdev && tmp != rdev)
197 return ERR_PTR(-EINVAL);
198
199 rdev = tmp;
200 }
201 }
202
203 if (!rdev)
204 return ERR_PTR(-ENODEV);
205
206 if (netns != wiphy_net(&rdev->wiphy))
207 return ERR_PTR(-ENODEV);
208
209 return rdev;
210 }
211
212 /*
213 * This function returns a pointer to the driver
214 * that the genl_info item that is passed refers to.
215 *
216 * The result of this can be a PTR_ERR and hence must
217 * be checked with IS_ERR() for errors.
218 */
219 static struct cfg80211_registered_device *
cfg80211_get_dev_from_info(struct net * netns,struct genl_info * info)220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
221 {
222 return __cfg80211_rdev_from_attrs(netns, info->attrs);
223 }
224
validate_beacon_head(const struct nlattr * attr,struct netlink_ext_ack * extack)225 static int validate_beacon_head(const struct nlattr *attr,
226 struct netlink_ext_ack *extack)
227 {
228 const u8 *data = nla_data(attr);
229 unsigned int len = nla_len(attr);
230 const struct element *elem;
231 const struct ieee80211_mgmt *mgmt = (void *)data;
232 unsigned int fixedlen, hdrlen;
233 bool s1g_bcn;
234
235 if (len < offsetofend(typeof(*mgmt), frame_control))
236 goto err;
237
238 s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
239 if (s1g_bcn) {
240 fixedlen = offsetof(struct ieee80211_ext,
241 u.s1g_beacon.variable);
242 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
243 } else {
244 fixedlen = offsetof(struct ieee80211_mgmt,
245 u.beacon.variable);
246 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
247 }
248
249 if (len < fixedlen)
250 goto err;
251
252 if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
253 goto err;
254
255 data += fixedlen;
256 len -= fixedlen;
257
258 for_each_element(elem, data, len) {
259 /* nothing */
260 }
261
262 if (for_each_element_completed(elem, data, len))
263 return 0;
264
265 err:
266 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
267 return -EINVAL;
268 }
269
validate_ie_attr(const struct nlattr * attr,struct netlink_ext_ack * extack)270 static int validate_ie_attr(const struct nlattr *attr,
271 struct netlink_ext_ack *extack)
272 {
273 const u8 *data = nla_data(attr);
274 unsigned int len = nla_len(attr);
275 const struct element *elem;
276
277 for_each_element(elem, data, len) {
278 /* nothing */
279 }
280
281 if (for_each_element_completed(elem, data, len))
282 return 0;
283
284 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
285 return -EINVAL;
286 }
287
validate_he_capa(const struct nlattr * attr,struct netlink_ext_ack * extack)288 static int validate_he_capa(const struct nlattr *attr,
289 struct netlink_ext_ack *extack)
290 {
291 if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr)))
292 return -EINVAL;
293
294 return 0;
295 }
296
297 /* policy for the attributes */
298 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
299
300 static const struct nla_policy
301 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
302 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
303 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
304 .len = U8_MAX },
305 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
306 .len = U8_MAX },
307 };
308
309 static const struct nla_policy
310 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
311 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
312 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
313 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
314 NLA_POLICY_MAX(NLA_U8, 15),
315 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
316 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
317 NLA_POLICY_MAX(NLA_U8, 15),
318 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
319 NLA_POLICY_MAX(NLA_U8, 31),
320 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
321 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
322 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
323 [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
324 [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
325 [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
326 [NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR] = { .type = NLA_U8 },
327 };
328
329 static const struct nla_policy
330 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
331 [NL80211_PMSR_TYPE_FTM] =
332 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
333 };
334
335 static const struct nla_policy
336 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
337 [NL80211_PMSR_REQ_ATTR_DATA] =
338 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
339 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
340 };
341
342 static const struct nla_policy
343 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
344 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
345 [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
346 [NL80211_PMSR_PEER_ATTR_REQ] =
347 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
348 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
349 };
350
351 static const struct nla_policy
352 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
353 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
354 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
355 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
356 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
357 [NL80211_PMSR_ATTR_PEERS] =
358 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
359 };
360
361 static const struct nla_policy
362 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
363 [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
364 NLA_POLICY_RANGE(NLA_U8, 1, 20),
365 [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
366 NLA_POLICY_RANGE(NLA_U8, 1, 20),
367 [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
368 NLA_POLICY_RANGE(NLA_U8, 1, 20),
369 [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
370 NLA_POLICY_EXACT_LEN(8),
371 [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
372 NLA_POLICY_EXACT_LEN(8),
373 [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
374 };
375
376 static const struct nla_policy
377 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
378 [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
379 [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
380 [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
381 };
382
383 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
384 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
385 .len = NL80211_MAX_SUPP_RATES },
386 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
387 .len = NL80211_MAX_SUPP_HT_RATES },
388 [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
389 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
390 [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
391 [NL80211_TXRATE_HE_GI] = NLA_POLICY_RANGE(NLA_U8,
392 NL80211_RATE_INFO_HE_GI_0_8,
393 NL80211_RATE_INFO_HE_GI_3_2),
394 [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
395 NL80211_RATE_INFO_HE_1XLTF,
396 NL80211_RATE_INFO_HE_4XLTF),
397 };
398
399 static const struct nla_policy
400 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
401 [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
402 [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
403 [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
404 [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
405 [NL80211_TID_CONFIG_ATTR_NOACK] =
406 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
407 [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
408 [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
409 [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
410 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
411 [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
412 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
413 [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
414 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
415 [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
416 NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
417 [NL80211_TID_CONFIG_ATTR_TX_RATE] =
418 NLA_POLICY_NESTED(nl80211_txattr_policy),
419 };
420
421 static const struct nla_policy
422 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
423 [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
424 [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
425 [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
426 NLA_POLICY_RANGE(NLA_BINARY,
427 NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
428 IEEE80211_MAX_DATA_LEN),
429 };
430
431 static const struct nla_policy
432 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
433 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
434 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
435 .len = IEEE80211_MAX_DATA_LEN }
436 };
437
438 static const struct nla_policy
439 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
440 [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
441 [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
442 };
443
444 static const struct nla_policy
445 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
446 [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
447 [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
448 };
449
450 static const struct nla_policy
451 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
452 [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
453 [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
454 NLA_POLICY_MIN(NLA_U8, 1),
455 [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
456 [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
457 [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
458 };
459
460 static const struct nla_policy
461 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
462 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
463 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
464 };
465
466 static struct netlink_range_validation nl80211_punct_bitmap_range = {
467 .min = 0,
468 .max = 0xffff,
469 };
470
471 static struct netlink_range_validation q_range = {
472 .max = INT_MAX,
473 };
474
475 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
476 [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
477 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
478 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
479 .len = 20-1 },
480 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
481
482 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
483 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
484 [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
485 NL80211_EDMG_CHANNELS_MIN,
486 NL80211_EDMG_CHANNELS_MAX),
487 [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
488 NL80211_EDMG_BW_CONFIG_MIN,
489 NL80211_EDMG_BW_CONFIG_MAX),
490
491 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
492 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
493 [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
494 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
495
496 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
497 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
498 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
499 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
500 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
501 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
502
503 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
504 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
505 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
506
507 [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
508 [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
509
510 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
511 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
512 .len = WLAN_MAX_KEY_LEN },
513 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
514 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
515 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
516 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
517 [NL80211_ATTR_KEY_TYPE] =
518 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
519
520 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
521 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
522 [NL80211_ATTR_BEACON_HEAD] =
523 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
524 IEEE80211_MAX_DATA_LEN),
525 [NL80211_ATTR_BEACON_TAIL] =
526 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
527 IEEE80211_MAX_DATA_LEN),
528 [NL80211_ATTR_STA_AID] =
529 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
530 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
531 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
532 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
533 .len = NL80211_MAX_SUPP_RATES },
534 [NL80211_ATTR_STA_PLINK_ACTION] =
535 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
536 [NL80211_ATTR_STA_TX_POWER_SETTING] =
537 NLA_POLICY_RANGE(NLA_U8,
538 NL80211_TX_POWER_AUTOMATIC,
539 NL80211_TX_POWER_FIXED),
540 [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
541 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
542 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
543 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
544 .len = IEEE80211_MAX_MESH_ID_LEN },
545 [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
546
547 /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
548 [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
549 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
550
551 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
552 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
553 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
554 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
555 .len = NL80211_MAX_SUPP_RATES },
556 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
557
558 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
559 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
560
561 [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
562
563 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
564 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
565 validate_ie_attr,
566 IEEE80211_MAX_DATA_LEN),
567 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
568 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
569
570 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
571 .len = IEEE80211_MAX_SSID_LEN },
572 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
573 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
574 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
575 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
576 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
577 NL80211_MFP_NO,
578 NL80211_MFP_OPTIONAL),
579 [NL80211_ATTR_STA_FLAGS2] =
580 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
581 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
582 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
583 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
584 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
585 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
586 [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
587 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
588 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
589 [NL80211_ATTR_PID] = { .type = NLA_U32 },
590 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
591 [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
592 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
593 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
594 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
595 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
596 .len = IEEE80211_MAX_DATA_LEN },
597 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
598 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
599 NL80211_PS_DISABLED,
600 NL80211_PS_ENABLED),
601 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
602 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
603 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
604 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
605 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
606 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
607 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
608 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
609 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
610 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
611 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
612 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
613 [NL80211_ATTR_STA_PLINK_STATE] =
614 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
615 [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
616 [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
617 [NL80211_ATTR_MESH_PEER_AID] =
618 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
619 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
620 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
621 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
622 [NL80211_ATTR_HIDDEN_SSID] =
623 NLA_POLICY_RANGE(NLA_U32,
624 NL80211_HIDDEN_SSID_NOT_IN_USE,
625 NL80211_HIDDEN_SSID_ZERO_CONTENTS),
626 [NL80211_ATTR_IE_PROBE_RESP] =
627 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
628 IEEE80211_MAX_DATA_LEN),
629 [NL80211_ATTR_IE_ASSOC_RESP] =
630 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
631 IEEE80211_MAX_DATA_LEN),
632 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
633 [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
634 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
635 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
636 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
637 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
638 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
639 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
640 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
641 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
642 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
643 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
644 .len = IEEE80211_MAX_DATA_LEN },
645 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
646 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
647 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
648 .len = NL80211_HT_CAPABILITY_LEN
649 },
650 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
651 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
652 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
653 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
654 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
655
656 /* need to include at least Auth Transaction and Status Code */
657 [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
658
659 [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
660 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
661 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
662 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
663 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
664 NLA_POLICY_RANGE(NLA_U32,
665 NL80211_MESH_POWER_UNKNOWN + 1,
666 NL80211_MESH_POWER_MAX),
667 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
668 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
669 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
670 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
671 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
672 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
673 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
674 .len = NL80211_VHT_CAPABILITY_LEN,
675 },
676 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
677 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
678 .len = IEEE80211_MAX_DATA_LEN },
679 [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
680 [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
681 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
682 [NL80211_ATTR_PEER_AID] =
683 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
684 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
685 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
686 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
687 [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
688 [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
689 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
690 /*
691 * The value of the Length field of the Supported Operating
692 * Classes element is between 2 and 253.
693 */
694 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
695 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
696 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
697 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
698 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
699 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
700 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
701 [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
702 IEEE80211_QOS_MAP_LEN_MIN,
703 IEEE80211_QOS_MAP_LEN_MAX),
704 [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
705 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
706 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
707 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
708 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
709 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
710 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
711 [NL80211_ATTR_USER_PRIO] =
712 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
713 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
714 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
715 [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
716 [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
717 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
718 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
719 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
720 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
721 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
722 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
723 [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
724 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
725 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
726 .len = VHT_MUMIMO_GROUPS_DATA_LEN
727 },
728 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
729 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
730 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
731 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
732 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
733 .len = FILS_MAX_KEK_LEN },
734 [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
735 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
736 [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
737 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
738 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
739 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
740 },
741 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
742 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
743 .len = FILS_ERP_MAX_USERNAME_LEN },
744 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
745 .len = FILS_ERP_MAX_REALM_LEN },
746 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
747 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
748 .len = FILS_ERP_MAX_RRK_LEN },
749 [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
750 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
751 [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
752 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
753 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
754
755 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
756 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
757 [NL80211_ATTR_TXQ_QUANTUM] = NLA_POLICY_FULL_RANGE(NLA_U32, &q_range),
758 [NL80211_ATTR_HE_CAPABILITY] =
759 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
760 NL80211_HE_MAX_CAPABILITY_LEN),
761 [NL80211_ATTR_FTM_RESPONDER] =
762 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
763 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
764 [NL80211_ATTR_PEER_MEASUREMENTS] =
765 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
766 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
767 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
768 .len = SAE_PASSWORD_MAX_LEN },
769 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
770 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
771 [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
772 [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
773 [NL80211_ATTR_TID_CONFIG] =
774 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
775 [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
776 [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
777 [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
778 [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
779 [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
780 [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
781 [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
782 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
783 [NL80211_ATTR_FILS_DISCOVERY] =
784 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
785 [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
786 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
787 [NL80211_ATTR_S1G_CAPABILITY] =
788 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
789 [NL80211_ATTR_S1G_CAPABILITY_MASK] =
790 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
791 [NL80211_ATTR_SAE_PWE] =
792 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
793 NL80211_SAE_PWE_BOTH),
794 [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
795 [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
796 [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
797 [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
798 [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
799 [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
800 [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
801 [NL80211_ATTR_MBSSID_CONFIG] =
802 NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
803 [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
804 [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
805 [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
806 [NL80211_ATTR_EHT_CAPABILITY] =
807 NLA_POLICY_RANGE(NLA_BINARY,
808 NL80211_EHT_MIN_CAPABILITY_LEN,
809 NL80211_EHT_MAX_CAPABILITY_LEN),
810 [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
811 [NL80211_ATTR_MLO_LINKS] =
812 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
813 [NL80211_ATTR_MLO_LINK_ID] =
814 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
815 [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
816 [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
817 [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
818 [NL80211_ATTR_PUNCT_BITMAP] =
819 NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range),
820
821 [NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS] = { .type = NLA_U16 },
822 [NL80211_ATTR_HW_TIMESTAMP_ENABLED] = { .type = NLA_FLAG },
823 [NL80211_ATTR_EMA_RNR_ELEMS] = { .type = NLA_NESTED },
824 [NL80211_ATTR_MLO_LINK_DISABLED] = { .type = NLA_FLAG },
825 };
826
827 /* policy for the key attributes */
828 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
829 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
830 [NL80211_KEY_IDX] = { .type = NLA_U8 },
831 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
832 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
833 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
834 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
835 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
836 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
837 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
838 };
839
840 /* policy for the key default flags */
841 static const struct nla_policy
842 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
843 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
844 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
845 };
846
847 #ifdef CONFIG_PM
848 /* policy for WoWLAN attributes */
849 static const struct nla_policy
850 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
851 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
852 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
853 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
854 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
855 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
856 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
857 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
858 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
859 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
860 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
861 };
862
863 static const struct nla_policy
864 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
865 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
866 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
867 [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
868 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
869 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
870 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
871 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
872 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
873 },
874 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
875 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
876 },
877 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
878 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
879 [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
880 };
881 #endif /* CONFIG_PM */
882
883 /* policy for coalesce rule attributes */
884 static const struct nla_policy
885 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
886 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
887 [NL80211_ATTR_COALESCE_RULE_CONDITION] =
888 NLA_POLICY_RANGE(NLA_U32,
889 NL80211_COALESCE_CONDITION_MATCH,
890 NL80211_COALESCE_CONDITION_NO_MATCH),
891 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
892 };
893
894 /* policy for GTK rekey offload attributes */
895 static const struct nla_policy
896 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
897 [NL80211_REKEY_DATA_KEK] = {
898 .type = NLA_BINARY,
899 .len = NL80211_KEK_EXT_LEN
900 },
901 [NL80211_REKEY_DATA_KCK] = {
902 .type = NLA_BINARY,
903 .len = NL80211_KCK_EXT_LEN_32
904 },
905 [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
906 [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
907 };
908
909 static const struct nla_policy
910 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
911 [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
912 [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
913 [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
914 [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
915 [NL80211_BAND_LC] = { .type = NLA_S32 },
916 };
917
918 static const struct nla_policy
919 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
920 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
921 .len = IEEE80211_MAX_SSID_LEN },
922 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
923 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
924 [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
925 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
926 };
927
928 static const struct nla_policy
929 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
930 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
931 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
932 };
933
934 static const struct nla_policy
935 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
936 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
937 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
938 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
939 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
940 },
941 };
942
943 /* policy for NAN function attributes */
944 static const struct nla_policy
945 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
946 [NL80211_NAN_FUNC_TYPE] =
947 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
948 [NL80211_NAN_FUNC_SERVICE_ID] = {
949 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
950 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
951 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
952 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
953 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
954 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
955 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
956 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
957 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
958 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
959 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
960 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
961 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
962 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
963 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
964 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
965 };
966
967 /* policy for Service Response Filter attributes */
968 static const struct nla_policy
969 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
970 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
971 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
972 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
973 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
974 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
975 };
976
977 /* policy for packet pattern attributes */
978 static const struct nla_policy
979 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
980 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
981 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
982 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
983 };
984
nl80211_prepare_wdev_dump(struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev,struct nlattr ** attrbuf)985 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
986 struct cfg80211_registered_device **rdev,
987 struct wireless_dev **wdev,
988 struct nlattr **attrbuf)
989 {
990 int err;
991
992 if (!cb->args[0]) {
993 struct nlattr **attrbuf_free = NULL;
994
995 if (!attrbuf) {
996 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
997 GFP_KERNEL);
998 if (!attrbuf)
999 return -ENOMEM;
1000 attrbuf_free = attrbuf;
1001 }
1002
1003 err = nlmsg_parse_deprecated(cb->nlh,
1004 GENL_HDRLEN + nl80211_fam.hdrsize,
1005 attrbuf, nl80211_fam.maxattr,
1006 nl80211_policy, NULL);
1007 if (err) {
1008 kfree(attrbuf_free);
1009 return err;
1010 }
1011
1012 rtnl_lock();
1013 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
1014 attrbuf);
1015 kfree(attrbuf_free);
1016 if (IS_ERR(*wdev)) {
1017 rtnl_unlock();
1018 return PTR_ERR(*wdev);
1019 }
1020 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1021 mutex_lock(&(*rdev)->wiphy.mtx);
1022 rtnl_unlock();
1023 /* 0 is the first index - add 1 to parse only once */
1024 cb->args[0] = (*rdev)->wiphy_idx + 1;
1025 cb->args[1] = (*wdev)->identifier;
1026 } else {
1027 /* subtract the 1 again here */
1028 struct wiphy *wiphy;
1029 struct wireless_dev *tmp;
1030
1031 rtnl_lock();
1032 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1033 if (!wiphy) {
1034 rtnl_unlock();
1035 return -ENODEV;
1036 }
1037 *rdev = wiphy_to_rdev(wiphy);
1038 *wdev = NULL;
1039
1040 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1041 if (tmp->identifier == cb->args[1]) {
1042 *wdev = tmp;
1043 break;
1044 }
1045 }
1046
1047 if (!*wdev) {
1048 rtnl_unlock();
1049 return -ENODEV;
1050 }
1051 mutex_lock(&(*rdev)->wiphy.mtx);
1052 rtnl_unlock();
1053 }
1054
1055 return 0;
1056 }
1057
1058 /* message building helper */
nl80211hdr_put(struct sk_buff * skb,u32 portid,u32 seq,int flags,u8 cmd)1059 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1060 int flags, u8 cmd)
1061 {
1062 /* since there is no private header just add the generic one */
1063 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1064 }
1065
nl80211_msg_put_wmm_rules(struct sk_buff * msg,const struct ieee80211_reg_rule * rule)1066 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1067 const struct ieee80211_reg_rule *rule)
1068 {
1069 int j;
1070 struct nlattr *nl_wmm_rules =
1071 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1072
1073 if (!nl_wmm_rules)
1074 goto nla_put_failure;
1075
1076 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1077 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1078
1079 if (!nl_wmm_rule)
1080 goto nla_put_failure;
1081
1082 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1083 rule->wmm_rule.client[j].cw_min) ||
1084 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1085 rule->wmm_rule.client[j].cw_max) ||
1086 nla_put_u8(msg, NL80211_WMMR_AIFSN,
1087 rule->wmm_rule.client[j].aifsn) ||
1088 nla_put_u16(msg, NL80211_WMMR_TXOP,
1089 rule->wmm_rule.client[j].cot))
1090 goto nla_put_failure;
1091
1092 nla_nest_end(msg, nl_wmm_rule);
1093 }
1094 nla_nest_end(msg, nl_wmm_rules);
1095
1096 return 0;
1097
1098 nla_put_failure:
1099 return -ENOBUFS;
1100 }
1101
nl80211_msg_put_channel(struct sk_buff * msg,struct wiphy * wiphy,struct ieee80211_channel * chan,bool large)1102 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1103 struct ieee80211_channel *chan,
1104 bool large)
1105 {
1106 /* Some channels must be completely excluded from the
1107 * list to protect old user-space tools from breaking
1108 */
1109 if (!large && chan->flags &
1110 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1111 return 0;
1112 if (!large && chan->freq_offset)
1113 return 0;
1114
1115 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1116 chan->center_freq))
1117 goto nla_put_failure;
1118
1119 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1120 goto nla_put_failure;
1121
1122 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1123 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1124 goto nla_put_failure;
1125 if (chan->flags & IEEE80211_CHAN_NO_IR) {
1126 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1127 goto nla_put_failure;
1128 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1129 goto nla_put_failure;
1130 }
1131 if (chan->flags & IEEE80211_CHAN_RADAR) {
1132 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1133 goto nla_put_failure;
1134 if (large) {
1135 u32 time;
1136
1137 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1138
1139 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1140 chan->dfs_state))
1141 goto nla_put_failure;
1142 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1143 time))
1144 goto nla_put_failure;
1145 if (nla_put_u32(msg,
1146 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1147 chan->dfs_cac_ms))
1148 goto nla_put_failure;
1149 }
1150 }
1151
1152 if (large) {
1153 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1154 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1155 goto nla_put_failure;
1156 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1157 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1158 goto nla_put_failure;
1159 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1160 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1161 goto nla_put_failure;
1162 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1163 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1164 goto nla_put_failure;
1165 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1166 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1167 goto nla_put_failure;
1168 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1169 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1170 goto nla_put_failure;
1171 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1172 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1173 goto nla_put_failure;
1174 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1175 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1176 goto nla_put_failure;
1177 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1178 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1179 goto nla_put_failure;
1180 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1181 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1182 goto nla_put_failure;
1183 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1184 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1185 goto nla_put_failure;
1186 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1187 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1188 goto nla_put_failure;
1189 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1190 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1191 goto nla_put_failure;
1192 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1193 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1194 goto nla_put_failure;
1195 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1196 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1197 goto nla_put_failure;
1198 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1199 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1200 goto nla_put_failure;
1201 }
1202
1203 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1204 DBM_TO_MBM(chan->max_power)))
1205 goto nla_put_failure;
1206
1207 if (large) {
1208 const struct ieee80211_reg_rule *rule =
1209 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1210
1211 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1212 if (nl80211_msg_put_wmm_rules(msg, rule))
1213 goto nla_put_failure;
1214 }
1215 }
1216
1217 return 0;
1218
1219 nla_put_failure:
1220 return -ENOBUFS;
1221 }
1222
nl80211_put_txq_stats(struct sk_buff * msg,struct cfg80211_txq_stats * txqstats,int attrtype)1223 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1224 struct cfg80211_txq_stats *txqstats,
1225 int attrtype)
1226 {
1227 struct nlattr *txqattr;
1228
1229 #define PUT_TXQVAL_U32(attr, memb) do { \
1230 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
1231 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1232 return false; \
1233 } while (0)
1234
1235 txqattr = nla_nest_start_noflag(msg, attrtype);
1236 if (!txqattr)
1237 return false;
1238
1239 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1240 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1241 PUT_TXQVAL_U32(FLOWS, flows);
1242 PUT_TXQVAL_U32(DROPS, drops);
1243 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1244 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1245 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1246 PUT_TXQVAL_U32(COLLISIONS, collisions);
1247 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1248 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1249 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1250 nla_nest_end(msg, txqattr);
1251
1252 #undef PUT_TXQVAL_U32
1253 return true;
1254 }
1255
1256 /* netlink command implementations */
1257
1258 /**
1259 * nl80211_link_id - return link ID
1260 * @attrs: attributes to look at
1261 *
1262 * Returns: the link ID or 0 if not given
1263 *
1264 * Note this function doesn't do any validation of the link
1265 * ID validity wrt. links that were actually added, so it must
1266 * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1267 * or if additional validation is done.
1268 */
nl80211_link_id(struct nlattr ** attrs)1269 static unsigned int nl80211_link_id(struct nlattr **attrs)
1270 {
1271 struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1272
1273 if (!linkid)
1274 return 0;
1275
1276 return nla_get_u8(linkid);
1277 }
1278
nl80211_link_id_or_invalid(struct nlattr ** attrs)1279 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1280 {
1281 struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1282
1283 if (!linkid)
1284 return -1;
1285
1286 return nla_get_u8(linkid);
1287 }
1288
1289 struct key_parse {
1290 struct key_params p;
1291 int idx;
1292 int type;
1293 bool def, defmgmt, defbeacon;
1294 bool def_uni, def_multi;
1295 };
1296
nl80211_parse_key_new(struct genl_info * info,struct nlattr * key,struct key_parse * k)1297 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1298 struct key_parse *k)
1299 {
1300 struct nlattr *tb[NL80211_KEY_MAX + 1];
1301 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1302 nl80211_key_policy,
1303 info->extack);
1304 if (err)
1305 return err;
1306
1307 k->def = !!tb[NL80211_KEY_DEFAULT];
1308 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1309 k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1310
1311 if (k->def) {
1312 k->def_uni = true;
1313 k->def_multi = true;
1314 }
1315 if (k->defmgmt || k->defbeacon)
1316 k->def_multi = true;
1317
1318 if (tb[NL80211_KEY_IDX])
1319 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1320
1321 if (tb[NL80211_KEY_DATA]) {
1322 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1323 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1324 }
1325
1326 if (tb[NL80211_KEY_SEQ]) {
1327 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1328 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1329 }
1330
1331 if (tb[NL80211_KEY_CIPHER])
1332 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1333
1334 if (tb[NL80211_KEY_TYPE])
1335 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1336
1337 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1338 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1339
1340 err = nla_parse_nested_deprecated(kdt,
1341 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1342 tb[NL80211_KEY_DEFAULT_TYPES],
1343 nl80211_key_default_policy,
1344 info->extack);
1345 if (err)
1346 return err;
1347
1348 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1349 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1350 }
1351
1352 if (tb[NL80211_KEY_MODE])
1353 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1354
1355 return 0;
1356 }
1357
nl80211_parse_key_old(struct genl_info * info,struct key_parse * k)1358 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1359 {
1360 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1361 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1362 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1363 }
1364
1365 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1366 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1367 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1368 }
1369
1370 if (info->attrs[NL80211_ATTR_KEY_IDX])
1371 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1372
1373 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1374 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1375
1376 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1377 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1378
1379 if (k->def) {
1380 k->def_uni = true;
1381 k->def_multi = true;
1382 }
1383 if (k->defmgmt)
1384 k->def_multi = true;
1385
1386 if (info->attrs[NL80211_ATTR_KEY_TYPE])
1387 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1388
1389 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1390 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1391 int err = nla_parse_nested_deprecated(kdt,
1392 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1393 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1394 nl80211_key_default_policy,
1395 info->extack);
1396 if (err)
1397 return err;
1398
1399 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1400 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1401 }
1402
1403 return 0;
1404 }
1405
nl80211_parse_key(struct genl_info * info,struct key_parse * k)1406 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1407 {
1408 int err;
1409
1410 memset(k, 0, sizeof(*k));
1411 k->idx = -1;
1412 k->type = -1;
1413
1414 if (info->attrs[NL80211_ATTR_KEY])
1415 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1416 else
1417 err = nl80211_parse_key_old(info, k);
1418
1419 if (err)
1420 return err;
1421
1422 if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1423 (k->defbeacon ? 1 : 0) > 1) {
1424 GENL_SET_ERR_MSG(info,
1425 "key with multiple default flags is invalid");
1426 return -EINVAL;
1427 }
1428
1429 if (k->defmgmt || k->defbeacon) {
1430 if (k->def_uni || !k->def_multi) {
1431 GENL_SET_ERR_MSG(info,
1432 "defmgmt/defbeacon key must be mcast");
1433 return -EINVAL;
1434 }
1435 }
1436
1437 if (k->idx != -1) {
1438 if (k->defmgmt) {
1439 if (k->idx < 4 || k->idx > 5) {
1440 GENL_SET_ERR_MSG(info,
1441 "defmgmt key idx not 4 or 5");
1442 return -EINVAL;
1443 }
1444 } else if (k->defbeacon) {
1445 if (k->idx < 6 || k->idx > 7) {
1446 GENL_SET_ERR_MSG(info,
1447 "defbeacon key idx not 6 or 7");
1448 return -EINVAL;
1449 }
1450 } else if (k->def) {
1451 if (k->idx < 0 || k->idx > 3) {
1452 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1453 return -EINVAL;
1454 }
1455 } else {
1456 if (k->idx < 0 || k->idx > 7) {
1457 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1458 return -EINVAL;
1459 }
1460 }
1461 }
1462
1463 return 0;
1464 }
1465
1466 static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device * rdev,struct genl_info * info,bool * no_ht)1467 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1468 struct genl_info *info, bool *no_ht)
1469 {
1470 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1471 struct key_parse parse;
1472 struct nlattr *key;
1473 struct cfg80211_cached_keys *result;
1474 int rem, err, def = 0;
1475 bool have_key = false;
1476
1477 nla_for_each_nested(key, keys, rem) {
1478 have_key = true;
1479 break;
1480 }
1481
1482 if (!have_key)
1483 return NULL;
1484
1485 result = kzalloc(sizeof(*result), GFP_KERNEL);
1486 if (!result)
1487 return ERR_PTR(-ENOMEM);
1488
1489 result->def = -1;
1490
1491 nla_for_each_nested(key, keys, rem) {
1492 memset(&parse, 0, sizeof(parse));
1493 parse.idx = -1;
1494
1495 err = nl80211_parse_key_new(info, key, &parse);
1496 if (err)
1497 goto error;
1498 err = -EINVAL;
1499 if (!parse.p.key)
1500 goto error;
1501 if (parse.idx < 0 || parse.idx > 3) {
1502 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1503 goto error;
1504 }
1505 if (parse.def) {
1506 if (def) {
1507 GENL_SET_ERR_MSG(info,
1508 "only one key can be default");
1509 goto error;
1510 }
1511 def = 1;
1512 result->def = parse.idx;
1513 if (!parse.def_uni || !parse.def_multi)
1514 goto error;
1515 } else if (parse.defmgmt)
1516 goto error;
1517 err = cfg80211_validate_key_settings(rdev, &parse.p,
1518 parse.idx, false, NULL);
1519 if (err)
1520 goto error;
1521 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1522 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1523 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1524 err = -EINVAL;
1525 goto error;
1526 }
1527 result->params[parse.idx].cipher = parse.p.cipher;
1528 result->params[parse.idx].key_len = parse.p.key_len;
1529 result->params[parse.idx].key = result->data[parse.idx];
1530 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1531
1532 /* must be WEP key if we got here */
1533 if (no_ht)
1534 *no_ht = true;
1535 }
1536
1537 if (result->def < 0) {
1538 err = -EINVAL;
1539 GENL_SET_ERR_MSG(info, "need a default/TX key");
1540 goto error;
1541 }
1542
1543 return result;
1544 error:
1545 kfree(result);
1546 return ERR_PTR(err);
1547 }
1548
nl80211_key_allowed(struct wireless_dev * wdev)1549 static int nl80211_key_allowed(struct wireless_dev *wdev)
1550 {
1551 ASSERT_WDEV_LOCK(wdev);
1552
1553 switch (wdev->iftype) {
1554 case NL80211_IFTYPE_AP:
1555 case NL80211_IFTYPE_AP_VLAN:
1556 case NL80211_IFTYPE_P2P_GO:
1557 case NL80211_IFTYPE_MESH_POINT:
1558 break;
1559 case NL80211_IFTYPE_ADHOC:
1560 if (wdev->u.ibss.current_bss)
1561 return 0;
1562 return -ENOLINK;
1563 case NL80211_IFTYPE_STATION:
1564 case NL80211_IFTYPE_P2P_CLIENT:
1565 if (wdev->connected)
1566 return 0;
1567 return -ENOLINK;
1568 case NL80211_IFTYPE_NAN:
1569 if (wiphy_ext_feature_isset(wdev->wiphy,
1570 NL80211_EXT_FEATURE_SECURE_NAN))
1571 return 0;
1572 return -EINVAL;
1573 case NL80211_IFTYPE_UNSPECIFIED:
1574 case NL80211_IFTYPE_OCB:
1575 case NL80211_IFTYPE_MONITOR:
1576 case NL80211_IFTYPE_P2P_DEVICE:
1577 case NL80211_IFTYPE_WDS:
1578 case NUM_NL80211_IFTYPES:
1579 return -EINVAL;
1580 }
1581
1582 return 0;
1583 }
1584
nl80211_get_valid_chan(struct wiphy * wiphy,u32 freq)1585 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1586 u32 freq)
1587 {
1588 struct ieee80211_channel *chan;
1589
1590 chan = ieee80211_get_channel_khz(wiphy, freq);
1591 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1592 return NULL;
1593 return chan;
1594 }
1595
nl80211_put_iftypes(struct sk_buff * msg,u32 attr,u16 ifmodes)1596 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1597 {
1598 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1599 int i;
1600
1601 if (!nl_modes)
1602 goto nla_put_failure;
1603
1604 i = 0;
1605 while (ifmodes) {
1606 if ((ifmodes & 1) && nla_put_flag(msg, i))
1607 goto nla_put_failure;
1608 ifmodes >>= 1;
1609 i++;
1610 }
1611
1612 nla_nest_end(msg, nl_modes);
1613 return 0;
1614
1615 nla_put_failure:
1616 return -ENOBUFS;
1617 }
1618
nl80211_put_iface_combinations(struct wiphy * wiphy,struct sk_buff * msg,bool large)1619 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1620 struct sk_buff *msg,
1621 bool large)
1622 {
1623 struct nlattr *nl_combis;
1624 int i, j;
1625
1626 nl_combis = nla_nest_start_noflag(msg,
1627 NL80211_ATTR_INTERFACE_COMBINATIONS);
1628 if (!nl_combis)
1629 goto nla_put_failure;
1630
1631 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1632 const struct ieee80211_iface_combination *c;
1633 struct nlattr *nl_combi, *nl_limits;
1634
1635 c = &wiphy->iface_combinations[i];
1636
1637 nl_combi = nla_nest_start_noflag(msg, i + 1);
1638 if (!nl_combi)
1639 goto nla_put_failure;
1640
1641 nl_limits = nla_nest_start_noflag(msg,
1642 NL80211_IFACE_COMB_LIMITS);
1643 if (!nl_limits)
1644 goto nla_put_failure;
1645
1646 for (j = 0; j < c->n_limits; j++) {
1647 struct nlattr *nl_limit;
1648
1649 nl_limit = nla_nest_start_noflag(msg, j + 1);
1650 if (!nl_limit)
1651 goto nla_put_failure;
1652 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1653 c->limits[j].max))
1654 goto nla_put_failure;
1655 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1656 c->limits[j].types))
1657 goto nla_put_failure;
1658 nla_nest_end(msg, nl_limit);
1659 }
1660
1661 nla_nest_end(msg, nl_limits);
1662
1663 if (c->beacon_int_infra_match &&
1664 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1665 goto nla_put_failure;
1666 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1667 c->num_different_channels) ||
1668 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1669 c->max_interfaces))
1670 goto nla_put_failure;
1671 if (large &&
1672 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1673 c->radar_detect_widths) ||
1674 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1675 c->radar_detect_regions)))
1676 goto nla_put_failure;
1677 if (c->beacon_int_min_gcd &&
1678 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1679 c->beacon_int_min_gcd))
1680 goto nla_put_failure;
1681
1682 nla_nest_end(msg, nl_combi);
1683 }
1684
1685 nla_nest_end(msg, nl_combis);
1686
1687 return 0;
1688 nla_put_failure:
1689 return -ENOBUFS;
1690 }
1691
1692 #ifdef CONFIG_PM
nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1693 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1694 struct sk_buff *msg)
1695 {
1696 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1697 struct nlattr *nl_tcp;
1698
1699 if (!tcp)
1700 return 0;
1701
1702 nl_tcp = nla_nest_start_noflag(msg,
1703 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1704 if (!nl_tcp)
1705 return -ENOBUFS;
1706
1707 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1708 tcp->data_payload_max))
1709 return -ENOBUFS;
1710
1711 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1712 tcp->data_payload_max))
1713 return -ENOBUFS;
1714
1715 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1716 return -ENOBUFS;
1717
1718 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1719 sizeof(*tcp->tok), tcp->tok))
1720 return -ENOBUFS;
1721
1722 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1723 tcp->data_interval_max))
1724 return -ENOBUFS;
1725
1726 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1727 tcp->wake_payload_max))
1728 return -ENOBUFS;
1729
1730 nla_nest_end(msg, nl_tcp);
1731 return 0;
1732 }
1733
nl80211_send_wowlan(struct sk_buff * msg,struct cfg80211_registered_device * rdev,bool large)1734 static int nl80211_send_wowlan(struct sk_buff *msg,
1735 struct cfg80211_registered_device *rdev,
1736 bool large)
1737 {
1738 struct nlattr *nl_wowlan;
1739
1740 if (!rdev->wiphy.wowlan)
1741 return 0;
1742
1743 nl_wowlan = nla_nest_start_noflag(msg,
1744 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1745 if (!nl_wowlan)
1746 return -ENOBUFS;
1747
1748 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1749 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1750 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1751 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1752 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1753 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1754 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1755 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1756 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1757 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1758 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1759 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1760 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1761 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1762 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1763 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1764 return -ENOBUFS;
1765
1766 if (rdev->wiphy.wowlan->n_patterns) {
1767 struct nl80211_pattern_support pat = {
1768 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1769 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1770 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1771 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1772 };
1773
1774 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1775 sizeof(pat), &pat))
1776 return -ENOBUFS;
1777 }
1778
1779 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1780 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1781 rdev->wiphy.wowlan->max_nd_match_sets))
1782 return -ENOBUFS;
1783
1784 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1785 return -ENOBUFS;
1786
1787 nla_nest_end(msg, nl_wowlan);
1788
1789 return 0;
1790 }
1791 #endif
1792
nl80211_send_coalesce(struct sk_buff * msg,struct cfg80211_registered_device * rdev)1793 static int nl80211_send_coalesce(struct sk_buff *msg,
1794 struct cfg80211_registered_device *rdev)
1795 {
1796 struct nl80211_coalesce_rule_support rule;
1797
1798 if (!rdev->wiphy.coalesce)
1799 return 0;
1800
1801 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1802 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1803 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1804 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1805 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1806 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1807
1808 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1809 return -ENOBUFS;
1810
1811 return 0;
1812 }
1813
1814 static int
nl80211_send_iftype_data(struct sk_buff * msg,const struct ieee80211_supported_band * sband,const struct ieee80211_sband_iftype_data * iftdata)1815 nl80211_send_iftype_data(struct sk_buff *msg,
1816 const struct ieee80211_supported_band *sband,
1817 const struct ieee80211_sband_iftype_data *iftdata)
1818 {
1819 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1820 const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1821
1822 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1823 iftdata->types_mask))
1824 return -ENOBUFS;
1825
1826 if (he_cap->has_he) {
1827 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1828 sizeof(he_cap->he_cap_elem.mac_cap_info),
1829 he_cap->he_cap_elem.mac_cap_info) ||
1830 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1831 sizeof(he_cap->he_cap_elem.phy_cap_info),
1832 he_cap->he_cap_elem.phy_cap_info) ||
1833 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1834 sizeof(he_cap->he_mcs_nss_supp),
1835 &he_cap->he_mcs_nss_supp) ||
1836 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1837 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1838 return -ENOBUFS;
1839 }
1840
1841 if (eht_cap->has_eht && he_cap->has_he) {
1842 u8 mcs_nss_size, ppe_thresh_size;
1843 u16 ppe_thres_hdr;
1844 bool is_ap;
1845
1846 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1847 iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1848
1849 mcs_nss_size =
1850 ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1851 &eht_cap->eht_cap_elem,
1852 is_ap);
1853
1854 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1855 ppe_thresh_size =
1856 ieee80211_eht_ppe_size(ppe_thres_hdr,
1857 eht_cap->eht_cap_elem.phy_cap_info);
1858
1859 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1860 sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1861 eht_cap->eht_cap_elem.mac_cap_info) ||
1862 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1863 sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1864 eht_cap->eht_cap_elem.phy_cap_info) ||
1865 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1866 mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1867 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1868 ppe_thresh_size, eht_cap->eht_ppe_thres))
1869 return -ENOBUFS;
1870 }
1871
1872 if (sband->band == NL80211_BAND_6GHZ &&
1873 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1874 sizeof(iftdata->he_6ghz_capa),
1875 &iftdata->he_6ghz_capa))
1876 return -ENOBUFS;
1877
1878 if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1879 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1880 iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1881 return -ENOBUFS;
1882
1883 return 0;
1884 }
1885
nl80211_send_band_rateinfo(struct sk_buff * msg,struct ieee80211_supported_band * sband,bool large)1886 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1887 struct ieee80211_supported_band *sband,
1888 bool large)
1889 {
1890 struct nlattr *nl_rates, *nl_rate;
1891 struct ieee80211_rate *rate;
1892 int i;
1893
1894 /* add HT info */
1895 if (sband->ht_cap.ht_supported &&
1896 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1897 sizeof(sband->ht_cap.mcs),
1898 &sband->ht_cap.mcs) ||
1899 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1900 sband->ht_cap.cap) ||
1901 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1902 sband->ht_cap.ampdu_factor) ||
1903 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1904 sband->ht_cap.ampdu_density)))
1905 return -ENOBUFS;
1906
1907 /* add VHT info */
1908 if (sband->vht_cap.vht_supported &&
1909 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1910 sizeof(sband->vht_cap.vht_mcs),
1911 &sband->vht_cap.vht_mcs) ||
1912 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1913 sband->vht_cap.cap)))
1914 return -ENOBUFS;
1915
1916 if (large && sband->n_iftype_data) {
1917 struct nlattr *nl_iftype_data =
1918 nla_nest_start_noflag(msg,
1919 NL80211_BAND_ATTR_IFTYPE_DATA);
1920 int err;
1921
1922 if (!nl_iftype_data)
1923 return -ENOBUFS;
1924
1925 for (i = 0; i < sband->n_iftype_data; i++) {
1926 struct nlattr *iftdata;
1927
1928 iftdata = nla_nest_start_noflag(msg, i + 1);
1929 if (!iftdata)
1930 return -ENOBUFS;
1931
1932 err = nl80211_send_iftype_data(msg, sband,
1933 &sband->iftype_data[i]);
1934 if (err)
1935 return err;
1936
1937 nla_nest_end(msg, iftdata);
1938 }
1939
1940 nla_nest_end(msg, nl_iftype_data);
1941 }
1942
1943 /* add EDMG info */
1944 if (large && sband->edmg_cap.channels &&
1945 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1946 sband->edmg_cap.channels) ||
1947 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1948 sband->edmg_cap.bw_config)))
1949
1950 return -ENOBUFS;
1951
1952 /* add bitrates */
1953 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1954 if (!nl_rates)
1955 return -ENOBUFS;
1956
1957 for (i = 0; i < sband->n_bitrates; i++) {
1958 nl_rate = nla_nest_start_noflag(msg, i);
1959 if (!nl_rate)
1960 return -ENOBUFS;
1961
1962 rate = &sband->bitrates[i];
1963 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1964 rate->bitrate))
1965 return -ENOBUFS;
1966 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1967 nla_put_flag(msg,
1968 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1969 return -ENOBUFS;
1970
1971 nla_nest_end(msg, nl_rate);
1972 }
1973
1974 nla_nest_end(msg, nl_rates);
1975
1976 /* S1G capabilities */
1977 if (sband->band == NL80211_BAND_S1GHZ && sband->s1g_cap.s1g &&
1978 (nla_put(msg, NL80211_BAND_ATTR_S1G_CAPA,
1979 sizeof(sband->s1g_cap.cap),
1980 sband->s1g_cap.cap) ||
1981 nla_put(msg, NL80211_BAND_ATTR_S1G_MCS_NSS_SET,
1982 sizeof(sband->s1g_cap.nss_mcs),
1983 sband->s1g_cap.nss_mcs)))
1984 return -ENOBUFS;
1985
1986 return 0;
1987 }
1988
1989 static int
nl80211_send_mgmt_stypes(struct sk_buff * msg,const struct ieee80211_txrx_stypes * mgmt_stypes)1990 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1991 const struct ieee80211_txrx_stypes *mgmt_stypes)
1992 {
1993 u16 stypes;
1994 struct nlattr *nl_ftypes, *nl_ifs;
1995 enum nl80211_iftype ift;
1996 int i;
1997
1998 if (!mgmt_stypes)
1999 return 0;
2000
2001 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
2002 if (!nl_ifs)
2003 return -ENOBUFS;
2004
2005 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2006 nl_ftypes = nla_nest_start_noflag(msg, ift);
2007 if (!nl_ftypes)
2008 return -ENOBUFS;
2009 i = 0;
2010 stypes = mgmt_stypes[ift].tx;
2011 while (stypes) {
2012 if ((stypes & 1) &&
2013 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2014 (i << 4) | IEEE80211_FTYPE_MGMT))
2015 return -ENOBUFS;
2016 stypes >>= 1;
2017 i++;
2018 }
2019 nla_nest_end(msg, nl_ftypes);
2020 }
2021
2022 nla_nest_end(msg, nl_ifs);
2023
2024 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
2025 if (!nl_ifs)
2026 return -ENOBUFS;
2027
2028 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2029 nl_ftypes = nla_nest_start_noflag(msg, ift);
2030 if (!nl_ftypes)
2031 return -ENOBUFS;
2032 i = 0;
2033 stypes = mgmt_stypes[ift].rx;
2034 while (stypes) {
2035 if ((stypes & 1) &&
2036 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2037 (i << 4) | IEEE80211_FTYPE_MGMT))
2038 return -ENOBUFS;
2039 stypes >>= 1;
2040 i++;
2041 }
2042 nla_nest_end(msg, nl_ftypes);
2043 }
2044 nla_nest_end(msg, nl_ifs);
2045
2046 return 0;
2047 }
2048
2049 #define CMD(op, n) \
2050 do { \
2051 if (rdev->ops->op) { \
2052 i++; \
2053 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
2054 goto nla_put_failure; \
2055 } \
2056 } while (0)
2057
nl80211_add_commands_unsplit(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2058 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2059 struct sk_buff *msg)
2060 {
2061 int i = 0;
2062
2063 /*
2064 * do *NOT* add anything into this function, new things need to be
2065 * advertised only to new versions of userspace that can deal with
2066 * the split (and they can't possibly care about new features...
2067 */
2068 CMD(add_virtual_intf, NEW_INTERFACE);
2069 CMD(change_virtual_intf, SET_INTERFACE);
2070 CMD(add_key, NEW_KEY);
2071 CMD(start_ap, START_AP);
2072 CMD(add_station, NEW_STATION);
2073 CMD(add_mpath, NEW_MPATH);
2074 CMD(update_mesh_config, SET_MESH_CONFIG);
2075 CMD(change_bss, SET_BSS);
2076 CMD(auth, AUTHENTICATE);
2077 CMD(assoc, ASSOCIATE);
2078 CMD(deauth, DEAUTHENTICATE);
2079 CMD(disassoc, DISASSOCIATE);
2080 CMD(join_ibss, JOIN_IBSS);
2081 CMD(join_mesh, JOIN_MESH);
2082 CMD(set_pmksa, SET_PMKSA);
2083 CMD(del_pmksa, DEL_PMKSA);
2084 CMD(flush_pmksa, FLUSH_PMKSA);
2085 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2086 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2087 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2088 CMD(mgmt_tx, FRAME);
2089 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2090 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2091 i++;
2092 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2093 goto nla_put_failure;
2094 }
2095 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2096 rdev->ops->join_mesh) {
2097 i++;
2098 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2099 goto nla_put_failure;
2100 }
2101 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2102 CMD(tdls_mgmt, TDLS_MGMT);
2103 CMD(tdls_oper, TDLS_OPER);
2104 }
2105 if (rdev->wiphy.max_sched_scan_reqs)
2106 CMD(sched_scan_start, START_SCHED_SCAN);
2107 CMD(probe_client, PROBE_CLIENT);
2108 CMD(set_noack_map, SET_NOACK_MAP);
2109 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2110 i++;
2111 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2112 goto nla_put_failure;
2113 }
2114 CMD(start_p2p_device, START_P2P_DEVICE);
2115 CMD(set_mcast_rate, SET_MCAST_RATE);
2116 #ifdef CONFIG_NL80211_TESTMODE
2117 CMD(testmode_cmd, TESTMODE);
2118 #endif
2119
2120 if (rdev->ops->connect || rdev->ops->auth) {
2121 i++;
2122 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2123 goto nla_put_failure;
2124 }
2125
2126 if (rdev->ops->disconnect || rdev->ops->deauth) {
2127 i++;
2128 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2129 goto nla_put_failure;
2130 }
2131
2132 return i;
2133 nla_put_failure:
2134 return -ENOBUFS;
2135 }
2136
2137 static int
nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities * cap,struct sk_buff * msg)2138 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2139 struct sk_buff *msg)
2140 {
2141 struct nlattr *ftm;
2142
2143 if (!cap->ftm.supported)
2144 return 0;
2145
2146 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2147 if (!ftm)
2148 return -ENOBUFS;
2149
2150 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2151 return -ENOBUFS;
2152 if (cap->ftm.non_asap &&
2153 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2154 return -ENOBUFS;
2155 if (cap->ftm.request_lci &&
2156 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2157 return -ENOBUFS;
2158 if (cap->ftm.request_civicloc &&
2159 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2160 return -ENOBUFS;
2161 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2162 cap->ftm.preambles))
2163 return -ENOBUFS;
2164 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2165 cap->ftm.bandwidths))
2166 return -ENOBUFS;
2167 if (cap->ftm.max_bursts_exponent >= 0 &&
2168 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2169 cap->ftm.max_bursts_exponent))
2170 return -ENOBUFS;
2171 if (cap->ftm.max_ftms_per_burst &&
2172 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2173 cap->ftm.max_ftms_per_burst))
2174 return -ENOBUFS;
2175 if (cap->ftm.trigger_based &&
2176 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2177 return -ENOBUFS;
2178 if (cap->ftm.non_trigger_based &&
2179 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2180 return -ENOBUFS;
2181
2182 nla_nest_end(msg, ftm);
2183 return 0;
2184 }
2185
nl80211_send_pmsr_capa(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2186 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2187 struct sk_buff *msg)
2188 {
2189 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2190 struct nlattr *pmsr, *caps;
2191
2192 if (!cap)
2193 return 0;
2194
2195 /*
2196 * we don't need to clean up anything here since the caller
2197 * will genlmsg_cancel() if we fail
2198 */
2199
2200 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2201 if (!pmsr)
2202 return -ENOBUFS;
2203
2204 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2205 return -ENOBUFS;
2206
2207 if (cap->report_ap_tsf &&
2208 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2209 return -ENOBUFS;
2210
2211 if (cap->randomize_mac_addr &&
2212 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2213 return -ENOBUFS;
2214
2215 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2216 if (!caps)
2217 return -ENOBUFS;
2218
2219 if (nl80211_send_pmsr_ftm_capa(cap, msg))
2220 return -ENOBUFS;
2221
2222 nla_nest_end(msg, caps);
2223 nla_nest_end(msg, pmsr);
2224
2225 return 0;
2226 }
2227
2228 static int
nl80211_put_iftype_akm_suites(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2229 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2230 struct sk_buff *msg)
2231 {
2232 int i;
2233 struct nlattr *nested, *nested_akms;
2234 const struct wiphy_iftype_akm_suites *iftype_akms;
2235
2236 if (!rdev->wiphy.num_iftype_akm_suites ||
2237 !rdev->wiphy.iftype_akm_suites)
2238 return 0;
2239
2240 nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2241 if (!nested)
2242 return -ENOBUFS;
2243
2244 for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2245 nested_akms = nla_nest_start(msg, i + 1);
2246 if (!nested_akms)
2247 return -ENOBUFS;
2248
2249 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2250
2251 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2252 iftype_akms->iftypes_mask))
2253 return -ENOBUFS;
2254
2255 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2256 sizeof(u32) * iftype_akms->n_akm_suites,
2257 iftype_akms->akm_suites)) {
2258 return -ENOBUFS;
2259 }
2260 nla_nest_end(msg, nested_akms);
2261 }
2262
2263 nla_nest_end(msg, nested);
2264
2265 return 0;
2266 }
2267
2268 static int
nl80211_put_tid_config_support(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2269 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2270 struct sk_buff *msg)
2271 {
2272 struct nlattr *supp;
2273
2274 if (!rdev->wiphy.tid_config_support.vif &&
2275 !rdev->wiphy.tid_config_support.peer)
2276 return 0;
2277
2278 supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2279 if (!supp)
2280 return -ENOSPC;
2281
2282 if (rdev->wiphy.tid_config_support.vif &&
2283 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2284 rdev->wiphy.tid_config_support.vif,
2285 NL80211_TID_CONFIG_ATTR_PAD))
2286 goto fail;
2287
2288 if (rdev->wiphy.tid_config_support.peer &&
2289 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2290 rdev->wiphy.tid_config_support.peer,
2291 NL80211_TID_CONFIG_ATTR_PAD))
2292 goto fail;
2293
2294 /* for now we just use the same value ... makes more sense */
2295 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2296 rdev->wiphy.tid_config_support.max_retry))
2297 goto fail;
2298 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2299 rdev->wiphy.tid_config_support.max_retry))
2300 goto fail;
2301
2302 nla_nest_end(msg, supp);
2303
2304 return 0;
2305 fail:
2306 nla_nest_cancel(msg, supp);
2307 return -ENOBUFS;
2308 }
2309
2310 static int
nl80211_put_sar_specs(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2311 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2312 struct sk_buff *msg)
2313 {
2314 struct nlattr *sar_capa, *specs, *sub_freq_range;
2315 u8 num_freq_ranges;
2316 int i;
2317
2318 if (!rdev->wiphy.sar_capa)
2319 return 0;
2320
2321 num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2322
2323 sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2324 if (!sar_capa)
2325 return -ENOSPC;
2326
2327 if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2328 goto fail;
2329
2330 specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2331 if (!specs)
2332 goto fail;
2333
2334 /* report supported freq_ranges */
2335 for (i = 0; i < num_freq_ranges; i++) {
2336 sub_freq_range = nla_nest_start(msg, i + 1);
2337 if (!sub_freq_range)
2338 goto fail;
2339
2340 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2341 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2342 goto fail;
2343
2344 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2345 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2346 goto fail;
2347
2348 nla_nest_end(msg, sub_freq_range);
2349 }
2350
2351 nla_nest_end(msg, specs);
2352 nla_nest_end(msg, sar_capa);
2353
2354 return 0;
2355 fail:
2356 nla_nest_cancel(msg, sar_capa);
2357 return -ENOBUFS;
2358 }
2359
nl80211_put_mbssid_support(struct wiphy * wiphy,struct sk_buff * msg)2360 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2361 {
2362 struct nlattr *config;
2363
2364 if (!wiphy->mbssid_max_interfaces)
2365 return 0;
2366
2367 config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2368 if (!config)
2369 return -ENOBUFS;
2370
2371 if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2372 wiphy->mbssid_max_interfaces))
2373 goto fail;
2374
2375 if (wiphy->ema_max_profile_periodicity &&
2376 nla_put_u8(msg,
2377 NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2378 wiphy->ema_max_profile_periodicity))
2379 goto fail;
2380
2381 nla_nest_end(msg, config);
2382 return 0;
2383
2384 fail:
2385 nla_nest_cancel(msg, config);
2386 return -ENOBUFS;
2387 }
2388
2389 struct nl80211_dump_wiphy_state {
2390 s64 filter_wiphy;
2391 long start;
2392 long split_start, band_start, chan_start, capa_start;
2393 bool split;
2394 };
2395
nl80211_send_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd,struct sk_buff * msg,u32 portid,u32 seq,int flags,struct nl80211_dump_wiphy_state * state)2396 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2397 enum nl80211_commands cmd,
2398 struct sk_buff *msg, u32 portid, u32 seq,
2399 int flags, struct nl80211_dump_wiphy_state *state)
2400 {
2401 void *hdr;
2402 struct nlattr *nl_bands, *nl_band;
2403 struct nlattr *nl_freqs, *nl_freq;
2404 struct nlattr *nl_cmds;
2405 enum nl80211_band band;
2406 struct ieee80211_channel *chan;
2407 int i;
2408 const struct ieee80211_txrx_stypes *mgmt_stypes =
2409 rdev->wiphy.mgmt_stypes;
2410 u32 features;
2411
2412 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2413 if (!hdr)
2414 return -ENOBUFS;
2415
2416 if (WARN_ON(!state))
2417 return -EINVAL;
2418
2419 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2420 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2421 wiphy_name(&rdev->wiphy)) ||
2422 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2423 cfg80211_rdev_list_generation))
2424 goto nla_put_failure;
2425
2426 if (cmd != NL80211_CMD_NEW_WIPHY)
2427 goto finish;
2428
2429 switch (state->split_start) {
2430 case 0:
2431 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2432 rdev->wiphy.retry_short) ||
2433 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2434 rdev->wiphy.retry_long) ||
2435 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2436 rdev->wiphy.frag_threshold) ||
2437 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2438 rdev->wiphy.rts_threshold) ||
2439 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2440 rdev->wiphy.coverage_class) ||
2441 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2442 rdev->wiphy.max_scan_ssids) ||
2443 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2444 rdev->wiphy.max_sched_scan_ssids) ||
2445 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2446 rdev->wiphy.max_scan_ie_len) ||
2447 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2448 rdev->wiphy.max_sched_scan_ie_len) ||
2449 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2450 rdev->wiphy.max_match_sets))
2451 goto nla_put_failure;
2452
2453 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2454 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2455 goto nla_put_failure;
2456 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2457 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2458 goto nla_put_failure;
2459 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2460 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2461 goto nla_put_failure;
2462 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2463 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2464 goto nla_put_failure;
2465 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2466 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2467 goto nla_put_failure;
2468 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2469 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2470 goto nla_put_failure;
2471 state->split_start++;
2472 if (state->split)
2473 break;
2474 fallthrough;
2475 case 1:
2476 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2477 sizeof(u32) * rdev->wiphy.n_cipher_suites,
2478 rdev->wiphy.cipher_suites))
2479 goto nla_put_failure;
2480
2481 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2482 rdev->wiphy.max_num_pmkids))
2483 goto nla_put_failure;
2484
2485 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2486 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2487 goto nla_put_failure;
2488
2489 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2490 rdev->wiphy.available_antennas_tx) ||
2491 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2492 rdev->wiphy.available_antennas_rx))
2493 goto nla_put_failure;
2494
2495 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2496 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2497 rdev->wiphy.probe_resp_offload))
2498 goto nla_put_failure;
2499
2500 if ((rdev->wiphy.available_antennas_tx ||
2501 rdev->wiphy.available_antennas_rx) &&
2502 rdev->ops->get_antenna) {
2503 u32 tx_ant = 0, rx_ant = 0;
2504 int res;
2505
2506 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2507 if (!res) {
2508 if (nla_put_u32(msg,
2509 NL80211_ATTR_WIPHY_ANTENNA_TX,
2510 tx_ant) ||
2511 nla_put_u32(msg,
2512 NL80211_ATTR_WIPHY_ANTENNA_RX,
2513 rx_ant))
2514 goto nla_put_failure;
2515 }
2516 }
2517
2518 state->split_start++;
2519 if (state->split)
2520 break;
2521 fallthrough;
2522 case 2:
2523 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2524 rdev->wiphy.interface_modes))
2525 goto nla_put_failure;
2526 state->split_start++;
2527 if (state->split)
2528 break;
2529 fallthrough;
2530 case 3:
2531 nl_bands = nla_nest_start_noflag(msg,
2532 NL80211_ATTR_WIPHY_BANDS);
2533 if (!nl_bands)
2534 goto nla_put_failure;
2535
2536 for (band = state->band_start;
2537 band < (state->split ?
2538 NUM_NL80211_BANDS :
2539 NL80211_BAND_60GHZ + 1);
2540 band++) {
2541 struct ieee80211_supported_band *sband;
2542
2543 /* omit higher bands for ancient software */
2544 if (band > NL80211_BAND_5GHZ && !state->split)
2545 break;
2546
2547 sband = rdev->wiphy.bands[band];
2548
2549 if (!sband)
2550 continue;
2551
2552 nl_band = nla_nest_start_noflag(msg, band);
2553 if (!nl_band)
2554 goto nla_put_failure;
2555
2556 switch (state->chan_start) {
2557 case 0:
2558 if (nl80211_send_band_rateinfo(msg, sband,
2559 state->split))
2560 goto nla_put_failure;
2561 state->chan_start++;
2562 if (state->split)
2563 break;
2564 fallthrough;
2565 default:
2566 /* add frequencies */
2567 nl_freqs = nla_nest_start_noflag(msg,
2568 NL80211_BAND_ATTR_FREQS);
2569 if (!nl_freqs)
2570 goto nla_put_failure;
2571
2572 for (i = state->chan_start - 1;
2573 i < sband->n_channels;
2574 i++) {
2575 nl_freq = nla_nest_start_noflag(msg,
2576 i);
2577 if (!nl_freq)
2578 goto nla_put_failure;
2579
2580 chan = &sband->channels[i];
2581
2582 if (nl80211_msg_put_channel(
2583 msg, &rdev->wiphy, chan,
2584 state->split))
2585 goto nla_put_failure;
2586
2587 nla_nest_end(msg, nl_freq);
2588 if (state->split)
2589 break;
2590 }
2591 if (i < sband->n_channels)
2592 state->chan_start = i + 2;
2593 else
2594 state->chan_start = 0;
2595 nla_nest_end(msg, nl_freqs);
2596 }
2597
2598 nla_nest_end(msg, nl_band);
2599
2600 if (state->split) {
2601 /* start again here */
2602 if (state->chan_start)
2603 band--;
2604 break;
2605 }
2606 }
2607 nla_nest_end(msg, nl_bands);
2608
2609 if (band < NUM_NL80211_BANDS)
2610 state->band_start = band + 1;
2611 else
2612 state->band_start = 0;
2613
2614 /* if bands & channels are done, continue outside */
2615 if (state->band_start == 0 && state->chan_start == 0)
2616 state->split_start++;
2617 if (state->split)
2618 break;
2619 fallthrough;
2620 case 4:
2621 nl_cmds = nla_nest_start_noflag(msg,
2622 NL80211_ATTR_SUPPORTED_COMMANDS);
2623 if (!nl_cmds)
2624 goto nla_put_failure;
2625
2626 i = nl80211_add_commands_unsplit(rdev, msg);
2627 if (i < 0)
2628 goto nla_put_failure;
2629 if (state->split) {
2630 CMD(crit_proto_start, CRIT_PROTOCOL_START);
2631 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2632 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2633 CMD(channel_switch, CHANNEL_SWITCH);
2634 CMD(set_qos_map, SET_QOS_MAP);
2635 if (rdev->wiphy.features &
2636 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2637 CMD(add_tx_ts, ADD_TX_TS);
2638 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2639 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2640 CMD(update_ft_ies, UPDATE_FT_IES);
2641 if (rdev->wiphy.sar_capa)
2642 CMD(set_sar_specs, SET_SAR_SPECS);
2643 }
2644 #undef CMD
2645
2646 nla_nest_end(msg, nl_cmds);
2647 state->split_start++;
2648 if (state->split)
2649 break;
2650 fallthrough;
2651 case 5:
2652 if (rdev->ops->remain_on_channel &&
2653 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2654 nla_put_u32(msg,
2655 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2656 rdev->wiphy.max_remain_on_channel_duration))
2657 goto nla_put_failure;
2658
2659 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2660 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2661 goto nla_put_failure;
2662
2663 state->split_start++;
2664 if (state->split)
2665 break;
2666 fallthrough;
2667 case 6:
2668 #ifdef CONFIG_PM
2669 if (nl80211_send_wowlan(msg, rdev, state->split))
2670 goto nla_put_failure;
2671 state->split_start++;
2672 if (state->split)
2673 break;
2674 #else
2675 state->split_start++;
2676 #endif
2677 fallthrough;
2678 case 7:
2679 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2680 rdev->wiphy.software_iftypes))
2681 goto nla_put_failure;
2682
2683 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2684 state->split))
2685 goto nla_put_failure;
2686
2687 state->split_start++;
2688 if (state->split)
2689 break;
2690 fallthrough;
2691 case 8:
2692 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2693 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2694 rdev->wiphy.ap_sme_capa))
2695 goto nla_put_failure;
2696
2697 features = rdev->wiphy.features;
2698 /*
2699 * We can only add the per-channel limit information if the
2700 * dump is split, otherwise it makes it too big. Therefore
2701 * only advertise it in that case.
2702 */
2703 if (state->split)
2704 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2705 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2706 goto nla_put_failure;
2707
2708 if (rdev->wiphy.ht_capa_mod_mask &&
2709 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2710 sizeof(*rdev->wiphy.ht_capa_mod_mask),
2711 rdev->wiphy.ht_capa_mod_mask))
2712 goto nla_put_failure;
2713
2714 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2715 rdev->wiphy.max_acl_mac_addrs &&
2716 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2717 rdev->wiphy.max_acl_mac_addrs))
2718 goto nla_put_failure;
2719
2720 /*
2721 * Any information below this point is only available to
2722 * applications that can deal with it being split. This
2723 * helps ensure that newly added capabilities don't break
2724 * older tools by overrunning their buffers.
2725 *
2726 * We still increment split_start so that in the split
2727 * case we'll continue with more data in the next round,
2728 * but break unconditionally so unsplit data stops here.
2729 */
2730 if (state->split)
2731 state->split_start++;
2732 else
2733 state->split_start = 0;
2734 break;
2735 case 9:
2736 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2737 goto nla_put_failure;
2738
2739 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2740 rdev->wiphy.max_sched_scan_plans) ||
2741 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2742 rdev->wiphy.max_sched_scan_plan_interval) ||
2743 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2744 rdev->wiphy.max_sched_scan_plan_iterations))
2745 goto nla_put_failure;
2746
2747 if (rdev->wiphy.extended_capabilities &&
2748 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2749 rdev->wiphy.extended_capabilities_len,
2750 rdev->wiphy.extended_capabilities) ||
2751 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2752 rdev->wiphy.extended_capabilities_len,
2753 rdev->wiphy.extended_capabilities_mask)))
2754 goto nla_put_failure;
2755
2756 if (rdev->wiphy.vht_capa_mod_mask &&
2757 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2758 sizeof(*rdev->wiphy.vht_capa_mod_mask),
2759 rdev->wiphy.vht_capa_mod_mask))
2760 goto nla_put_failure;
2761
2762 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2763 rdev->wiphy.perm_addr))
2764 goto nla_put_failure;
2765
2766 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2767 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2768 rdev->wiphy.addr_mask))
2769 goto nla_put_failure;
2770
2771 if (rdev->wiphy.n_addresses > 1) {
2772 void *attr;
2773
2774 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2775 if (!attr)
2776 goto nla_put_failure;
2777
2778 for (i = 0; i < rdev->wiphy.n_addresses; i++)
2779 if (nla_put(msg, i + 1, ETH_ALEN,
2780 rdev->wiphy.addresses[i].addr))
2781 goto nla_put_failure;
2782
2783 nla_nest_end(msg, attr);
2784 }
2785
2786 state->split_start++;
2787 break;
2788 case 10:
2789 if (nl80211_send_coalesce(msg, rdev))
2790 goto nla_put_failure;
2791
2792 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2793 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2794 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2795 goto nla_put_failure;
2796
2797 if (rdev->wiphy.max_ap_assoc_sta &&
2798 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2799 rdev->wiphy.max_ap_assoc_sta))
2800 goto nla_put_failure;
2801
2802 state->split_start++;
2803 break;
2804 case 11:
2805 if (rdev->wiphy.n_vendor_commands) {
2806 const struct nl80211_vendor_cmd_info *info;
2807 struct nlattr *nested;
2808
2809 nested = nla_nest_start_noflag(msg,
2810 NL80211_ATTR_VENDOR_DATA);
2811 if (!nested)
2812 goto nla_put_failure;
2813
2814 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2815 info = &rdev->wiphy.vendor_commands[i].info;
2816 if (nla_put(msg, i + 1, sizeof(*info), info))
2817 goto nla_put_failure;
2818 }
2819 nla_nest_end(msg, nested);
2820 }
2821
2822 if (rdev->wiphy.n_vendor_events) {
2823 const struct nl80211_vendor_cmd_info *info;
2824 struct nlattr *nested;
2825
2826 nested = nla_nest_start_noflag(msg,
2827 NL80211_ATTR_VENDOR_EVENTS);
2828 if (!nested)
2829 goto nla_put_failure;
2830
2831 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2832 info = &rdev->wiphy.vendor_events[i];
2833 if (nla_put(msg, i + 1, sizeof(*info), info))
2834 goto nla_put_failure;
2835 }
2836 nla_nest_end(msg, nested);
2837 }
2838 state->split_start++;
2839 break;
2840 case 12:
2841 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2842 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2843 rdev->wiphy.max_num_csa_counters))
2844 goto nla_put_failure;
2845
2846 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2847 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2848 goto nla_put_failure;
2849
2850 if (rdev->wiphy.max_sched_scan_reqs &&
2851 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2852 rdev->wiphy.max_sched_scan_reqs))
2853 goto nla_put_failure;
2854
2855 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2856 sizeof(rdev->wiphy.ext_features),
2857 rdev->wiphy.ext_features))
2858 goto nla_put_failure;
2859
2860 if (rdev->wiphy.bss_select_support) {
2861 struct nlattr *nested;
2862 u32 bss_select_support = rdev->wiphy.bss_select_support;
2863
2864 nested = nla_nest_start_noflag(msg,
2865 NL80211_ATTR_BSS_SELECT);
2866 if (!nested)
2867 goto nla_put_failure;
2868
2869 i = 0;
2870 while (bss_select_support) {
2871 if ((bss_select_support & 1) &&
2872 nla_put_flag(msg, i))
2873 goto nla_put_failure;
2874 i++;
2875 bss_select_support >>= 1;
2876 }
2877 nla_nest_end(msg, nested);
2878 }
2879
2880 state->split_start++;
2881 break;
2882 case 13:
2883 if (rdev->wiphy.num_iftype_ext_capab &&
2884 rdev->wiphy.iftype_ext_capab) {
2885 struct nlattr *nested_ext_capab, *nested;
2886
2887 nested = nla_nest_start_noflag(msg,
2888 NL80211_ATTR_IFTYPE_EXT_CAPA);
2889 if (!nested)
2890 goto nla_put_failure;
2891
2892 for (i = state->capa_start;
2893 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2894 const struct wiphy_iftype_ext_capab *capab;
2895
2896 capab = &rdev->wiphy.iftype_ext_capab[i];
2897
2898 nested_ext_capab = nla_nest_start_noflag(msg,
2899 i);
2900 if (!nested_ext_capab ||
2901 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2902 capab->iftype) ||
2903 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2904 capab->extended_capabilities_len,
2905 capab->extended_capabilities) ||
2906 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2907 capab->extended_capabilities_len,
2908 capab->extended_capabilities_mask))
2909 goto nla_put_failure;
2910
2911 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2912 (nla_put_u16(msg,
2913 NL80211_ATTR_EML_CAPABILITY,
2914 capab->eml_capabilities) ||
2915 nla_put_u16(msg,
2916 NL80211_ATTR_MLD_CAPA_AND_OPS,
2917 capab->mld_capa_and_ops)))
2918 goto nla_put_failure;
2919
2920 nla_nest_end(msg, nested_ext_capab);
2921 if (state->split)
2922 break;
2923 }
2924 nla_nest_end(msg, nested);
2925 if (i < rdev->wiphy.num_iftype_ext_capab) {
2926 state->capa_start = i + 1;
2927 break;
2928 }
2929 }
2930
2931 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2932 rdev->wiphy.nan_supported_bands))
2933 goto nla_put_failure;
2934
2935 if (wiphy_ext_feature_isset(&rdev->wiphy,
2936 NL80211_EXT_FEATURE_TXQS)) {
2937 struct cfg80211_txq_stats txqstats = {};
2938 int res;
2939
2940 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2941 if (!res &&
2942 !nl80211_put_txq_stats(msg, &txqstats,
2943 NL80211_ATTR_TXQ_STATS))
2944 goto nla_put_failure;
2945
2946 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2947 rdev->wiphy.txq_limit))
2948 goto nla_put_failure;
2949 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2950 rdev->wiphy.txq_memory_limit))
2951 goto nla_put_failure;
2952 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2953 rdev->wiphy.txq_quantum))
2954 goto nla_put_failure;
2955 }
2956
2957 state->split_start++;
2958 break;
2959 case 14:
2960 if (nl80211_send_pmsr_capa(rdev, msg))
2961 goto nla_put_failure;
2962
2963 state->split_start++;
2964 break;
2965 case 15:
2966 if (rdev->wiphy.akm_suites &&
2967 nla_put(msg, NL80211_ATTR_AKM_SUITES,
2968 sizeof(u32) * rdev->wiphy.n_akm_suites,
2969 rdev->wiphy.akm_suites))
2970 goto nla_put_failure;
2971
2972 if (nl80211_put_iftype_akm_suites(rdev, msg))
2973 goto nla_put_failure;
2974
2975 if (nl80211_put_tid_config_support(rdev, msg))
2976 goto nla_put_failure;
2977 state->split_start++;
2978 break;
2979 case 16:
2980 if (nl80211_put_sar_specs(rdev, msg))
2981 goto nla_put_failure;
2982
2983 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2984 goto nla_put_failure;
2985
2986 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2987 rdev->wiphy.max_num_akm_suites))
2988 goto nla_put_failure;
2989
2990 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2991 nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2992
2993 if (rdev->wiphy.hw_timestamp_max_peers &&
2994 nla_put_u16(msg, NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS,
2995 rdev->wiphy.hw_timestamp_max_peers))
2996 goto nla_put_failure;
2997
2998 /* done */
2999 state->split_start = 0;
3000 break;
3001 }
3002 finish:
3003 genlmsg_end(msg, hdr);
3004 return 0;
3005
3006 nla_put_failure:
3007 genlmsg_cancel(msg, hdr);
3008 return -EMSGSIZE;
3009 }
3010
nl80211_dump_wiphy_parse(struct sk_buff * skb,struct netlink_callback * cb,struct nl80211_dump_wiphy_state * state)3011 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
3012 struct netlink_callback *cb,
3013 struct nl80211_dump_wiphy_state *state)
3014 {
3015 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
3016 int ret;
3017
3018 if (!tb)
3019 return -ENOMEM;
3020
3021 ret = nlmsg_parse_deprecated(cb->nlh,
3022 GENL_HDRLEN + nl80211_fam.hdrsize,
3023 tb, nl80211_fam.maxattr,
3024 nl80211_policy, NULL);
3025 /* ignore parse errors for backward compatibility */
3026 if (ret) {
3027 ret = 0;
3028 goto out;
3029 }
3030
3031 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
3032 if (tb[NL80211_ATTR_WIPHY])
3033 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
3034 if (tb[NL80211_ATTR_WDEV])
3035 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3036 if (tb[NL80211_ATTR_IFINDEX]) {
3037 struct net_device *netdev;
3038 struct cfg80211_registered_device *rdev;
3039 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3040
3041 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3042 if (!netdev) {
3043 ret = -ENODEV;
3044 goto out;
3045 }
3046 if (netdev->ieee80211_ptr) {
3047 rdev = wiphy_to_rdev(
3048 netdev->ieee80211_ptr->wiphy);
3049 state->filter_wiphy = rdev->wiphy_idx;
3050 }
3051 }
3052
3053 ret = 0;
3054 out:
3055 kfree(tb);
3056 return ret;
3057 }
3058
nl80211_dump_wiphy(struct sk_buff * skb,struct netlink_callback * cb)3059 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3060 {
3061 int idx = 0, ret;
3062 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3063 struct cfg80211_registered_device *rdev;
3064
3065 rtnl_lock();
3066 if (!state) {
3067 state = kzalloc(sizeof(*state), GFP_KERNEL);
3068 if (!state) {
3069 rtnl_unlock();
3070 return -ENOMEM;
3071 }
3072 state->filter_wiphy = -1;
3073 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3074 if (ret) {
3075 kfree(state);
3076 rtnl_unlock();
3077 return ret;
3078 }
3079 cb->args[0] = (long)state;
3080 }
3081
3082 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3083 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3084 continue;
3085 if (++idx <= state->start)
3086 continue;
3087 if (state->filter_wiphy != -1 &&
3088 state->filter_wiphy != rdev->wiphy_idx)
3089 continue;
3090 wiphy_lock(&rdev->wiphy);
3091 /* attempt to fit multiple wiphy data chunks into the skb */
3092 do {
3093 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3094 skb,
3095 NETLINK_CB(cb->skb).portid,
3096 cb->nlh->nlmsg_seq,
3097 NLM_F_MULTI, state);
3098 if (ret < 0) {
3099 /*
3100 * If sending the wiphy data didn't fit (ENOBUFS
3101 * or EMSGSIZE returned), this SKB is still
3102 * empty (so it's not too big because another
3103 * wiphy dataset is already in the skb) and
3104 * we've not tried to adjust the dump allocation
3105 * yet ... then adjust the alloc size to be
3106 * bigger, and return 1 but with the empty skb.
3107 * This results in an empty message being RX'ed
3108 * in userspace, but that is ignored.
3109 *
3110 * We can then retry with the larger buffer.
3111 */
3112 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3113 !skb->len && !state->split &&
3114 cb->min_dump_alloc < 4096) {
3115 cb->min_dump_alloc = 4096;
3116 state->split_start = 0;
3117 wiphy_unlock(&rdev->wiphy);
3118 rtnl_unlock();
3119 return 1;
3120 }
3121 idx--;
3122 break;
3123 }
3124 } while (state->split_start > 0);
3125 wiphy_unlock(&rdev->wiphy);
3126 break;
3127 }
3128 rtnl_unlock();
3129
3130 state->start = idx;
3131
3132 return skb->len;
3133 }
3134
nl80211_dump_wiphy_done(struct netlink_callback * cb)3135 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3136 {
3137 kfree((void *)cb->args[0]);
3138 return 0;
3139 }
3140
nl80211_get_wiphy(struct sk_buff * skb,struct genl_info * info)3141 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3142 {
3143 struct sk_buff *msg;
3144 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3145 struct nl80211_dump_wiphy_state state = {};
3146
3147 msg = nlmsg_new(4096, GFP_KERNEL);
3148 if (!msg)
3149 return -ENOMEM;
3150
3151 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3152 info->snd_portid, info->snd_seq, 0,
3153 &state) < 0) {
3154 nlmsg_free(msg);
3155 return -ENOBUFS;
3156 }
3157
3158 return genlmsg_reply(msg, info);
3159 }
3160
3161 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3162 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
3163 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
3164 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
3165 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
3166 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
3167 };
3168
parse_txq_params(struct nlattr * tb[],struct ieee80211_txq_params * txq_params)3169 static int parse_txq_params(struct nlattr *tb[],
3170 struct ieee80211_txq_params *txq_params)
3171 {
3172 u8 ac;
3173
3174 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3175 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3176 !tb[NL80211_TXQ_ATTR_AIFS])
3177 return -EINVAL;
3178
3179 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3180 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3181 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3182 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3183 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3184
3185 if (ac >= NL80211_NUM_ACS)
3186 return -EINVAL;
3187 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3188 return 0;
3189 }
3190
nl80211_can_set_dev_channel(struct wireless_dev * wdev)3191 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3192 {
3193 /*
3194 * You can only set the channel explicitly for some interfaces,
3195 * most have their channel managed via their respective
3196 * "establish a connection" command (connect, join, ...)
3197 *
3198 * For AP/GO and mesh mode, the channel can be set with the
3199 * channel userspace API, but is only stored and passed to the
3200 * low-level driver when the AP starts or the mesh is joined.
3201 * This is for backward compatibility, userspace can also give
3202 * the channel in the start-ap or join-mesh commands instead.
3203 *
3204 * Monitors are special as they are normally slaved to
3205 * whatever else is going on, so they have their own special
3206 * operation to set the monitor channel if possible.
3207 */
3208 return !wdev ||
3209 wdev->iftype == NL80211_IFTYPE_AP ||
3210 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3211 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3212 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3213 }
3214
nl80211_parse_punct_bitmap(struct cfg80211_registered_device * rdev,struct genl_info * info,const struct cfg80211_chan_def * chandef,u16 * punct_bitmap)3215 static int nl80211_parse_punct_bitmap(struct cfg80211_registered_device *rdev,
3216 struct genl_info *info,
3217 const struct cfg80211_chan_def *chandef,
3218 u16 *punct_bitmap)
3219 {
3220 if (!wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_PUNCT))
3221 return -EINVAL;
3222
3223 *punct_bitmap = nla_get_u32(info->attrs[NL80211_ATTR_PUNCT_BITMAP]);
3224 if (!cfg80211_valid_disable_subchannel_bitmap(punct_bitmap, chandef))
3225 return -EINVAL;
3226
3227 return 0;
3228 }
3229
nl80211_parse_chandef(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_chan_def * chandef)3230 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3231 struct genl_info *info,
3232 struct cfg80211_chan_def *chandef)
3233 {
3234 struct netlink_ext_ack *extack = info->extack;
3235 struct nlattr **attrs = info->attrs;
3236 u32 control_freq;
3237
3238 if (!attrs[NL80211_ATTR_WIPHY_FREQ]) {
3239 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3240 "Frequency is missing");
3241 return -EINVAL;
3242 }
3243
3244 control_freq = MHZ_TO_KHZ(
3245 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3246 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3247 control_freq +=
3248 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3249
3250 memset(chandef, 0, sizeof(*chandef));
3251 chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3252 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3253 chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3254 chandef->freq1_offset = control_freq % 1000;
3255 chandef->center_freq2 = 0;
3256
3257 /* Primary channel not allowed */
3258 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3259 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3260 "Channel is disabled");
3261 return -EINVAL;
3262 }
3263
3264 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3265 enum nl80211_channel_type chantype;
3266
3267 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3268
3269 switch (chantype) {
3270 case NL80211_CHAN_NO_HT:
3271 case NL80211_CHAN_HT20:
3272 case NL80211_CHAN_HT40PLUS:
3273 case NL80211_CHAN_HT40MINUS:
3274 cfg80211_chandef_create(chandef, chandef->chan,
3275 chantype);
3276 /* user input for center_freq is incorrect */
3277 if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3278 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3279 NL_SET_ERR_MSG_ATTR(extack,
3280 attrs[NL80211_ATTR_CENTER_FREQ1],
3281 "bad center frequency 1");
3282 return -EINVAL;
3283 }
3284 /* center_freq2 must be zero */
3285 if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3286 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3287 NL_SET_ERR_MSG_ATTR(extack,
3288 attrs[NL80211_ATTR_CENTER_FREQ2],
3289 "center frequency 2 can't be used");
3290 return -EINVAL;
3291 }
3292 break;
3293 default:
3294 NL_SET_ERR_MSG_ATTR(extack,
3295 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3296 "invalid channel type");
3297 return -EINVAL;
3298 }
3299 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3300 chandef->width =
3301 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3302 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3303 /* User input error for channel width doesn't match channel */
3304 if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3305 NL_SET_ERR_MSG_ATTR(extack,
3306 attrs[NL80211_ATTR_CHANNEL_WIDTH],
3307 "bad channel width");
3308 return -EINVAL;
3309 }
3310 }
3311 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3312 chandef->center_freq1 =
3313 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3314 if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3315 chandef->freq1_offset = nla_get_u32(
3316 attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3317 else
3318 chandef->freq1_offset = 0;
3319 }
3320 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3321 chandef->center_freq2 =
3322 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3323 }
3324
3325 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3326 chandef->edmg.channels =
3327 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3328
3329 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3330 chandef->edmg.bw_config =
3331 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3332 } else {
3333 chandef->edmg.bw_config = 0;
3334 chandef->edmg.channels = 0;
3335 }
3336
3337 if (!cfg80211_chandef_valid(chandef)) {
3338 NL_SET_ERR_MSG(extack, "invalid channel definition");
3339 return -EINVAL;
3340 }
3341
3342 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3343 IEEE80211_CHAN_DISABLED)) {
3344 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3345 return -EINVAL;
3346 }
3347
3348 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3349 chandef->width == NL80211_CHAN_WIDTH_10) &&
3350 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3351 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3352 return -EINVAL;
3353 }
3354
3355 return 0;
3356 }
3357
__nl80211_set_channel(struct cfg80211_registered_device * rdev,struct net_device * dev,struct genl_info * info,int _link_id)3358 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3359 struct net_device *dev,
3360 struct genl_info *info,
3361 int _link_id)
3362 {
3363 struct cfg80211_chan_def chandef;
3364 int result;
3365 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3366 struct wireless_dev *wdev = NULL;
3367 int link_id = _link_id;
3368
3369 if (dev)
3370 wdev = dev->ieee80211_ptr;
3371 if (!nl80211_can_set_dev_channel(wdev))
3372 return -EOPNOTSUPP;
3373 if (wdev)
3374 iftype = wdev->iftype;
3375
3376 if (link_id < 0) {
3377 if (wdev && wdev->valid_links)
3378 return -EINVAL;
3379 link_id = 0;
3380 }
3381
3382 result = nl80211_parse_chandef(rdev, info, &chandef);
3383 if (result)
3384 return result;
3385
3386 switch (iftype) {
3387 case NL80211_IFTYPE_AP:
3388 case NL80211_IFTYPE_P2P_GO:
3389 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3390 iftype))
3391 return -EINVAL;
3392 if (wdev->links[link_id].ap.beacon_interval) {
3393 struct ieee80211_channel *cur_chan;
3394
3395 if (!dev || !rdev->ops->set_ap_chanwidth ||
3396 !(rdev->wiphy.features &
3397 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3398 return -EBUSY;
3399
3400 /* Only allow dynamic channel width changes */
3401 cur_chan = wdev->links[link_id].ap.chandef.chan;
3402 if (chandef.chan != cur_chan)
3403 return -EBUSY;
3404
3405 /* only allow this for regular channel widths */
3406 switch (wdev->links[link_id].ap.chandef.width) {
3407 case NL80211_CHAN_WIDTH_20_NOHT:
3408 case NL80211_CHAN_WIDTH_20:
3409 case NL80211_CHAN_WIDTH_40:
3410 case NL80211_CHAN_WIDTH_80:
3411 case NL80211_CHAN_WIDTH_80P80:
3412 case NL80211_CHAN_WIDTH_160:
3413 case NL80211_CHAN_WIDTH_320:
3414 break;
3415 default:
3416 return -EINVAL;
3417 }
3418
3419 switch (chandef.width) {
3420 case NL80211_CHAN_WIDTH_20_NOHT:
3421 case NL80211_CHAN_WIDTH_20:
3422 case NL80211_CHAN_WIDTH_40:
3423 case NL80211_CHAN_WIDTH_80:
3424 case NL80211_CHAN_WIDTH_80P80:
3425 case NL80211_CHAN_WIDTH_160:
3426 case NL80211_CHAN_WIDTH_320:
3427 break;
3428 default:
3429 return -EINVAL;
3430 }
3431
3432 result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3433 &chandef);
3434 if (result)
3435 return result;
3436 wdev->links[link_id].ap.chandef = chandef;
3437 } else {
3438 wdev->u.ap.preset_chandef = chandef;
3439 }
3440 return 0;
3441 case NL80211_IFTYPE_MESH_POINT:
3442 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3443 case NL80211_IFTYPE_MONITOR:
3444 return cfg80211_set_monitor_channel(rdev, &chandef);
3445 default:
3446 break;
3447 }
3448
3449 return -EINVAL;
3450 }
3451
nl80211_set_channel(struct sk_buff * skb,struct genl_info * info)3452 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3453 {
3454 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3455 int link_id = nl80211_link_id_or_invalid(info->attrs);
3456 struct net_device *netdev = info->user_ptr[1];
3457 int ret;
3458
3459 wdev_lock(netdev->ieee80211_ptr);
3460 ret = __nl80211_set_channel(rdev, netdev, info, link_id);
3461 wdev_unlock(netdev->ieee80211_ptr);
3462
3463 return ret;
3464 }
3465
nl80211_set_wiphy(struct sk_buff * skb,struct genl_info * info)3466 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3467 {
3468 struct cfg80211_registered_device *rdev = NULL;
3469 struct net_device *netdev = NULL;
3470 struct wireless_dev *wdev;
3471 int result = 0, rem_txq_params = 0;
3472 struct nlattr *nl_txq_params;
3473 u32 changed;
3474 u8 retry_short = 0, retry_long = 0;
3475 u32 frag_threshold = 0, rts_threshold = 0;
3476 u8 coverage_class = 0;
3477 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3478
3479 rtnl_lock();
3480 /*
3481 * Try to find the wiphy and netdev. Normally this
3482 * function shouldn't need the netdev, but this is
3483 * done for backward compatibility -- previously
3484 * setting the channel was done per wiphy, but now
3485 * it is per netdev. Previous userland like hostapd
3486 * also passed a netdev to set_wiphy, so that it is
3487 * possible to let that go to the right netdev!
3488 */
3489
3490 if (info->attrs[NL80211_ATTR_IFINDEX]) {
3491 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3492
3493 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3494 if (netdev && netdev->ieee80211_ptr)
3495 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3496 else
3497 netdev = NULL;
3498 }
3499
3500 if (!netdev) {
3501 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3502 info->attrs);
3503 if (IS_ERR(rdev)) {
3504 rtnl_unlock();
3505 return PTR_ERR(rdev);
3506 }
3507 wdev = NULL;
3508 netdev = NULL;
3509 result = 0;
3510 } else
3511 wdev = netdev->ieee80211_ptr;
3512
3513 wiphy_lock(&rdev->wiphy);
3514
3515 /*
3516 * end workaround code, by now the rdev is available
3517 * and locked, and wdev may or may not be NULL.
3518 */
3519
3520 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3521 result = cfg80211_dev_rename(
3522 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3523 rtnl_unlock();
3524
3525 if (result)
3526 goto out;
3527
3528 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3529 struct ieee80211_txq_params txq_params;
3530 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3531
3532 if (!rdev->ops->set_txq_params) {
3533 result = -EOPNOTSUPP;
3534 goto out;
3535 }
3536
3537 if (!netdev) {
3538 result = -EINVAL;
3539 goto out;
3540 }
3541
3542 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3543 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3544 result = -EINVAL;
3545 goto out;
3546 }
3547
3548 if (!netif_running(netdev)) {
3549 result = -ENETDOWN;
3550 goto out;
3551 }
3552
3553 nla_for_each_nested(nl_txq_params,
3554 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3555 rem_txq_params) {
3556 result = nla_parse_nested_deprecated(tb,
3557 NL80211_TXQ_ATTR_MAX,
3558 nl_txq_params,
3559 txq_params_policy,
3560 info->extack);
3561 if (result)
3562 goto out;
3563 result = parse_txq_params(tb, &txq_params);
3564 if (result)
3565 goto out;
3566
3567 txq_params.link_id =
3568 nl80211_link_id_or_invalid(info->attrs);
3569
3570 wdev_lock(netdev->ieee80211_ptr);
3571 if (txq_params.link_id >= 0 &&
3572 !(netdev->ieee80211_ptr->valid_links &
3573 BIT(txq_params.link_id)))
3574 result = -ENOLINK;
3575 else if (txq_params.link_id >= 0 &&
3576 !netdev->ieee80211_ptr->valid_links)
3577 result = -EINVAL;
3578 else
3579 result = rdev_set_txq_params(rdev, netdev,
3580 &txq_params);
3581 wdev_unlock(netdev->ieee80211_ptr);
3582 if (result)
3583 goto out;
3584 }
3585 }
3586
3587 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3588 int link_id = nl80211_link_id_or_invalid(info->attrs);
3589
3590 if (wdev) {
3591 wdev_lock(wdev);
3592 result = __nl80211_set_channel(
3593 rdev,
3594 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3595 info, link_id);
3596 wdev_unlock(wdev);
3597 } else {
3598 result = __nl80211_set_channel(rdev, netdev, info, link_id);
3599 }
3600
3601 if (result)
3602 goto out;
3603 }
3604
3605 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3606 struct wireless_dev *txp_wdev = wdev;
3607 enum nl80211_tx_power_setting type;
3608 int idx, mbm = 0;
3609
3610 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3611 txp_wdev = NULL;
3612
3613 if (!rdev->ops->set_tx_power) {
3614 result = -EOPNOTSUPP;
3615 goto out;
3616 }
3617
3618 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3619 type = nla_get_u32(info->attrs[idx]);
3620
3621 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3622 (type != NL80211_TX_POWER_AUTOMATIC)) {
3623 result = -EINVAL;
3624 goto out;
3625 }
3626
3627 if (type != NL80211_TX_POWER_AUTOMATIC) {
3628 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3629 mbm = nla_get_u32(info->attrs[idx]);
3630 }
3631
3632 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3633 if (result)
3634 goto out;
3635 }
3636
3637 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3638 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3639 u32 tx_ant, rx_ant;
3640
3641 if ((!rdev->wiphy.available_antennas_tx &&
3642 !rdev->wiphy.available_antennas_rx) ||
3643 !rdev->ops->set_antenna) {
3644 result = -EOPNOTSUPP;
3645 goto out;
3646 }
3647
3648 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3649 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3650
3651 /* reject antenna configurations which don't match the
3652 * available antenna masks, except for the "all" mask */
3653 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3654 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3655 result = -EINVAL;
3656 goto out;
3657 }
3658
3659 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3660 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3661
3662 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3663 if (result)
3664 goto out;
3665 }
3666
3667 changed = 0;
3668
3669 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3670 retry_short = nla_get_u8(
3671 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3672
3673 changed |= WIPHY_PARAM_RETRY_SHORT;
3674 }
3675
3676 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3677 retry_long = nla_get_u8(
3678 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3679
3680 changed |= WIPHY_PARAM_RETRY_LONG;
3681 }
3682
3683 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3684 frag_threshold = nla_get_u32(
3685 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3686 if (frag_threshold < 256) {
3687 result = -EINVAL;
3688 goto out;
3689 }
3690
3691 if (frag_threshold != (u32) -1) {
3692 /*
3693 * Fragments (apart from the last one) are required to
3694 * have even length. Make the fragmentation code
3695 * simpler by stripping LSB should someone try to use
3696 * odd threshold value.
3697 */
3698 frag_threshold &= ~0x1;
3699 }
3700 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3701 }
3702
3703 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3704 rts_threshold = nla_get_u32(
3705 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3706 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3707 }
3708
3709 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3710 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3711 result = -EINVAL;
3712 goto out;
3713 }
3714
3715 coverage_class = nla_get_u8(
3716 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3717 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3718 }
3719
3720 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3721 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3722 result = -EOPNOTSUPP;
3723 goto out;
3724 }
3725
3726 changed |= WIPHY_PARAM_DYN_ACK;
3727 }
3728
3729 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3730 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3731 NL80211_EXT_FEATURE_TXQS)) {
3732 result = -EOPNOTSUPP;
3733 goto out;
3734 }
3735 txq_limit = nla_get_u32(
3736 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3737 changed |= WIPHY_PARAM_TXQ_LIMIT;
3738 }
3739
3740 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3741 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3742 NL80211_EXT_FEATURE_TXQS)) {
3743 result = -EOPNOTSUPP;
3744 goto out;
3745 }
3746 txq_memory_limit = nla_get_u32(
3747 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3748 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3749 }
3750
3751 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3752 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3753 NL80211_EXT_FEATURE_TXQS)) {
3754 result = -EOPNOTSUPP;
3755 goto out;
3756 }
3757 txq_quantum = nla_get_u32(
3758 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3759 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3760 }
3761
3762 if (changed) {
3763 u8 old_retry_short, old_retry_long;
3764 u32 old_frag_threshold, old_rts_threshold;
3765 u8 old_coverage_class;
3766 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3767
3768 if (!rdev->ops->set_wiphy_params) {
3769 result = -EOPNOTSUPP;
3770 goto out;
3771 }
3772
3773 old_retry_short = rdev->wiphy.retry_short;
3774 old_retry_long = rdev->wiphy.retry_long;
3775 old_frag_threshold = rdev->wiphy.frag_threshold;
3776 old_rts_threshold = rdev->wiphy.rts_threshold;
3777 old_coverage_class = rdev->wiphy.coverage_class;
3778 old_txq_limit = rdev->wiphy.txq_limit;
3779 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3780 old_txq_quantum = rdev->wiphy.txq_quantum;
3781
3782 if (changed & WIPHY_PARAM_RETRY_SHORT)
3783 rdev->wiphy.retry_short = retry_short;
3784 if (changed & WIPHY_PARAM_RETRY_LONG)
3785 rdev->wiphy.retry_long = retry_long;
3786 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3787 rdev->wiphy.frag_threshold = frag_threshold;
3788 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3789 rdev->wiphy.rts_threshold = rts_threshold;
3790 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3791 rdev->wiphy.coverage_class = coverage_class;
3792 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3793 rdev->wiphy.txq_limit = txq_limit;
3794 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3795 rdev->wiphy.txq_memory_limit = txq_memory_limit;
3796 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3797 rdev->wiphy.txq_quantum = txq_quantum;
3798
3799 result = rdev_set_wiphy_params(rdev, changed);
3800 if (result) {
3801 rdev->wiphy.retry_short = old_retry_short;
3802 rdev->wiphy.retry_long = old_retry_long;
3803 rdev->wiphy.frag_threshold = old_frag_threshold;
3804 rdev->wiphy.rts_threshold = old_rts_threshold;
3805 rdev->wiphy.coverage_class = old_coverage_class;
3806 rdev->wiphy.txq_limit = old_txq_limit;
3807 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3808 rdev->wiphy.txq_quantum = old_txq_quantum;
3809 goto out;
3810 }
3811 }
3812
3813 result = 0;
3814
3815 out:
3816 wiphy_unlock(&rdev->wiphy);
3817 return result;
3818 }
3819
nl80211_send_chandef(struct sk_buff * msg,const struct cfg80211_chan_def * chandef)3820 int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef)
3821 {
3822 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3823 return -EINVAL;
3824
3825 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3826 chandef->chan->center_freq))
3827 return -ENOBUFS;
3828 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3829 chandef->chan->freq_offset))
3830 return -ENOBUFS;
3831 switch (chandef->width) {
3832 case NL80211_CHAN_WIDTH_20_NOHT:
3833 case NL80211_CHAN_WIDTH_20:
3834 case NL80211_CHAN_WIDTH_40:
3835 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3836 cfg80211_get_chandef_type(chandef)))
3837 return -ENOBUFS;
3838 break;
3839 default:
3840 break;
3841 }
3842 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3843 return -ENOBUFS;
3844 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3845 return -ENOBUFS;
3846 if (chandef->center_freq2 &&
3847 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3848 return -ENOBUFS;
3849 return 0;
3850 }
3851 EXPORT_SYMBOL(nl80211_send_chandef);
3852
nl80211_send_iface(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)3853 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3854 struct cfg80211_registered_device *rdev,
3855 struct wireless_dev *wdev,
3856 enum nl80211_commands cmd)
3857 {
3858 struct net_device *dev = wdev->netdev;
3859 void *hdr;
3860
3861 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3862 cmd != NL80211_CMD_DEL_INTERFACE &&
3863 cmd != NL80211_CMD_SET_INTERFACE);
3864
3865 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3866 if (!hdr)
3867 return -1;
3868
3869 if (dev &&
3870 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3871 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3872 goto nla_put_failure;
3873
3874 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3875 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3876 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3877 NL80211_ATTR_PAD) ||
3878 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3879 nla_put_u32(msg, NL80211_ATTR_GENERATION,
3880 rdev->devlist_generation ^
3881 (cfg80211_rdev_list_generation << 2)) ||
3882 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3883 goto nla_put_failure;
3884
3885 if (rdev->ops->get_channel && !wdev->valid_links) {
3886 struct cfg80211_chan_def chandef = {};
3887 int ret;
3888
3889 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3890 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3891 goto nla_put_failure;
3892 }
3893
3894 if (rdev->ops->get_tx_power) {
3895 int dbm, ret;
3896
3897 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3898 if (ret == 0 &&
3899 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3900 DBM_TO_MBM(dbm)))
3901 goto nla_put_failure;
3902 }
3903
3904 wdev_lock(wdev);
3905 switch (wdev->iftype) {
3906 case NL80211_IFTYPE_AP:
3907 case NL80211_IFTYPE_P2P_GO:
3908 if (wdev->u.ap.ssid_len &&
3909 nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3910 wdev->u.ap.ssid))
3911 goto nla_put_failure_locked;
3912 break;
3913 case NL80211_IFTYPE_STATION:
3914 case NL80211_IFTYPE_P2P_CLIENT:
3915 if (wdev->u.client.ssid_len &&
3916 nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3917 wdev->u.client.ssid))
3918 goto nla_put_failure_locked;
3919 break;
3920 case NL80211_IFTYPE_ADHOC:
3921 if (wdev->u.ibss.ssid_len &&
3922 nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3923 wdev->u.ibss.ssid))
3924 goto nla_put_failure_locked;
3925 break;
3926 default:
3927 /* nothing */
3928 break;
3929 }
3930 wdev_unlock(wdev);
3931
3932 if (rdev->ops->get_txq_stats) {
3933 struct cfg80211_txq_stats txqstats = {};
3934 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3935
3936 if (ret == 0 &&
3937 !nl80211_put_txq_stats(msg, &txqstats,
3938 NL80211_ATTR_TXQ_STATS))
3939 goto nla_put_failure;
3940 }
3941
3942 if (wdev->valid_links) {
3943 unsigned int link_id;
3944 struct nlattr *links = nla_nest_start(msg,
3945 NL80211_ATTR_MLO_LINKS);
3946
3947 if (!links)
3948 goto nla_put_failure;
3949
3950 for_each_valid_link(wdev, link_id) {
3951 struct nlattr *link = nla_nest_start(msg, link_id + 1);
3952 struct cfg80211_chan_def chandef = {};
3953 int ret;
3954
3955 if (!link)
3956 goto nla_put_failure;
3957
3958 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3959 goto nla_put_failure;
3960 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3961 wdev->links[link_id].addr))
3962 goto nla_put_failure;
3963
3964 ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3965 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3966 goto nla_put_failure;
3967
3968 nla_nest_end(msg, link);
3969 }
3970
3971 nla_nest_end(msg, links);
3972 }
3973
3974 genlmsg_end(msg, hdr);
3975 return 0;
3976
3977 nla_put_failure_locked:
3978 wdev_unlock(wdev);
3979 nla_put_failure:
3980 genlmsg_cancel(msg, hdr);
3981 return -EMSGSIZE;
3982 }
3983
nl80211_dump_interface(struct sk_buff * skb,struct netlink_callback * cb)3984 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3985 {
3986 int wp_idx = 0;
3987 int if_idx = 0;
3988 int wp_start = cb->args[0];
3989 int if_start = cb->args[1];
3990 int filter_wiphy = -1;
3991 struct cfg80211_registered_device *rdev;
3992 struct wireless_dev *wdev;
3993 int ret;
3994
3995 rtnl_lock();
3996 if (!cb->args[2]) {
3997 struct nl80211_dump_wiphy_state state = {
3998 .filter_wiphy = -1,
3999 };
4000
4001 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
4002 if (ret)
4003 goto out_unlock;
4004
4005 filter_wiphy = state.filter_wiphy;
4006
4007 /*
4008 * if filtering, set cb->args[2] to +1 since 0 is the default
4009 * value needed to determine that parsing is necessary.
4010 */
4011 if (filter_wiphy >= 0)
4012 cb->args[2] = filter_wiphy + 1;
4013 else
4014 cb->args[2] = -1;
4015 } else if (cb->args[2] > 0) {
4016 filter_wiphy = cb->args[2] - 1;
4017 }
4018
4019 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
4020 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
4021 continue;
4022 if (wp_idx < wp_start) {
4023 wp_idx++;
4024 continue;
4025 }
4026
4027 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
4028 continue;
4029
4030 if_idx = 0;
4031
4032 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4033 if (if_idx < if_start) {
4034 if_idx++;
4035 continue;
4036 }
4037 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
4038 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4039 rdev, wdev,
4040 NL80211_CMD_NEW_INTERFACE) < 0) {
4041 goto out;
4042 }
4043 if_idx++;
4044 }
4045
4046 if_start = 0;
4047 wp_idx++;
4048 }
4049 out:
4050 cb->args[0] = wp_idx;
4051 cb->args[1] = if_idx;
4052
4053 ret = skb->len;
4054 out_unlock:
4055 rtnl_unlock();
4056
4057 return ret;
4058 }
4059
nl80211_get_interface(struct sk_buff * skb,struct genl_info * info)4060 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
4061 {
4062 struct sk_buff *msg;
4063 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4064 struct wireless_dev *wdev = info->user_ptr[1];
4065
4066 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4067 if (!msg)
4068 return -ENOMEM;
4069
4070 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4071 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4072 nlmsg_free(msg);
4073 return -ENOBUFS;
4074 }
4075
4076 return genlmsg_reply(msg, info);
4077 }
4078
4079 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
4080 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
4081 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
4082 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
4083 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
4084 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
4085 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
4086 };
4087
parse_monitor_flags(struct nlattr * nla,u32 * mntrflags)4088 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4089 {
4090 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4091 int flag;
4092
4093 *mntrflags = 0;
4094
4095 if (!nla)
4096 return -EINVAL;
4097
4098 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4099 return -EINVAL;
4100
4101 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4102 if (flags[flag])
4103 *mntrflags |= (1<<flag);
4104
4105 *mntrflags |= MONITOR_FLAG_CHANGED;
4106
4107 return 0;
4108 }
4109
nl80211_parse_mon_options(struct cfg80211_registered_device * rdev,enum nl80211_iftype type,struct genl_info * info,struct vif_params * params)4110 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4111 enum nl80211_iftype type,
4112 struct genl_info *info,
4113 struct vif_params *params)
4114 {
4115 bool change = false;
4116 int err;
4117
4118 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4119 if (type != NL80211_IFTYPE_MONITOR)
4120 return -EINVAL;
4121
4122 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4123 ¶ms->flags);
4124 if (err)
4125 return err;
4126
4127 change = true;
4128 }
4129
4130 if (params->flags & MONITOR_FLAG_ACTIVE &&
4131 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4132 return -EOPNOTSUPP;
4133
4134 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4135 const u8 *mumimo_groups;
4136 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4137
4138 if (type != NL80211_IFTYPE_MONITOR)
4139 return -EINVAL;
4140
4141 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4142 return -EOPNOTSUPP;
4143
4144 mumimo_groups =
4145 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4146
4147 /* bits 0 and 63 are reserved and must be zero */
4148 if ((mumimo_groups[0] & BIT(0)) ||
4149 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4150 return -EINVAL;
4151
4152 params->vht_mumimo_groups = mumimo_groups;
4153 change = true;
4154 }
4155
4156 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4157 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4158
4159 if (type != NL80211_IFTYPE_MONITOR)
4160 return -EINVAL;
4161
4162 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4163 return -EOPNOTSUPP;
4164
4165 params->vht_mumimo_follow_addr =
4166 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4167 change = true;
4168 }
4169
4170 return change ? 1 : 0;
4171 }
4172
nl80211_valid_4addr(struct cfg80211_registered_device * rdev,struct net_device * netdev,u8 use_4addr,enum nl80211_iftype iftype)4173 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4174 struct net_device *netdev, u8 use_4addr,
4175 enum nl80211_iftype iftype)
4176 {
4177 if (!use_4addr) {
4178 if (netdev && netif_is_bridge_port(netdev))
4179 return -EBUSY;
4180 return 0;
4181 }
4182
4183 switch (iftype) {
4184 case NL80211_IFTYPE_AP_VLAN:
4185 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4186 return 0;
4187 break;
4188 case NL80211_IFTYPE_STATION:
4189 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4190 return 0;
4191 break;
4192 default:
4193 break;
4194 }
4195
4196 return -EOPNOTSUPP;
4197 }
4198
nl80211_set_interface(struct sk_buff * skb,struct genl_info * info)4199 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4200 {
4201 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4202 struct vif_params params;
4203 int err;
4204 enum nl80211_iftype otype, ntype;
4205 struct net_device *dev = info->user_ptr[1];
4206 bool change = false;
4207
4208 memset(¶ms, 0, sizeof(params));
4209
4210 otype = ntype = dev->ieee80211_ptr->iftype;
4211
4212 if (info->attrs[NL80211_ATTR_IFTYPE]) {
4213 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4214 if (otype != ntype)
4215 change = true;
4216 }
4217
4218 if (info->attrs[NL80211_ATTR_MESH_ID]) {
4219 struct wireless_dev *wdev = dev->ieee80211_ptr;
4220
4221 if (ntype != NL80211_IFTYPE_MESH_POINT)
4222 return -EINVAL;
4223 if (otype != NL80211_IFTYPE_MESH_POINT)
4224 return -EINVAL;
4225 if (netif_running(dev))
4226 return -EBUSY;
4227
4228 wdev_lock(wdev);
4229 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4230 IEEE80211_MAX_MESH_ID_LEN);
4231 wdev->u.mesh.id_up_len =
4232 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4233 memcpy(wdev->u.mesh.id,
4234 nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4235 wdev->u.mesh.id_up_len);
4236 wdev_unlock(wdev);
4237 }
4238
4239 if (info->attrs[NL80211_ATTR_4ADDR]) {
4240 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4241 change = true;
4242 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4243 if (err)
4244 return err;
4245 } else {
4246 params.use_4addr = -1;
4247 }
4248
4249 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms);
4250 if (err < 0)
4251 return err;
4252 if (err > 0)
4253 change = true;
4254
4255 if (change)
4256 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms);
4257 else
4258 err = 0;
4259
4260 if (!err && params.use_4addr != -1)
4261 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4262
4263 if (change && !err) {
4264 struct wireless_dev *wdev = dev->ieee80211_ptr;
4265
4266 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4267 }
4268
4269 return err;
4270 }
4271
_nl80211_new_interface(struct sk_buff * skb,struct genl_info * info)4272 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4273 {
4274 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4275 struct vif_params params;
4276 struct wireless_dev *wdev;
4277 struct sk_buff *msg;
4278 int err;
4279 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4280
4281 memset(¶ms, 0, sizeof(params));
4282
4283 if (!info->attrs[NL80211_ATTR_IFNAME])
4284 return -EINVAL;
4285
4286 if (info->attrs[NL80211_ATTR_IFTYPE])
4287 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4288
4289 if (!rdev->ops->add_virtual_intf)
4290 return -EOPNOTSUPP;
4291
4292 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4293 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4294 info->attrs[NL80211_ATTR_MAC]) {
4295 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4296 ETH_ALEN);
4297 if (!is_valid_ether_addr(params.macaddr))
4298 return -EADDRNOTAVAIL;
4299 }
4300
4301 if (info->attrs[NL80211_ATTR_4ADDR]) {
4302 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4303 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4304 if (err)
4305 return err;
4306 }
4307
4308 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4309 return -EOPNOTSUPP;
4310
4311 err = nl80211_parse_mon_options(rdev, type, info, ¶ms);
4312 if (err < 0)
4313 return err;
4314
4315 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4316 if (!msg)
4317 return -ENOMEM;
4318
4319 wdev = rdev_add_virtual_intf(rdev,
4320 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4321 NET_NAME_USER, type, ¶ms);
4322 if (WARN_ON(!wdev)) {
4323 nlmsg_free(msg);
4324 return -EPROTO;
4325 } else if (IS_ERR(wdev)) {
4326 nlmsg_free(msg);
4327 return PTR_ERR(wdev);
4328 }
4329
4330 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4331 wdev->owner_nlportid = info->snd_portid;
4332
4333 switch (type) {
4334 case NL80211_IFTYPE_MESH_POINT:
4335 if (!info->attrs[NL80211_ATTR_MESH_ID])
4336 break;
4337 wdev_lock(wdev);
4338 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4339 IEEE80211_MAX_MESH_ID_LEN);
4340 wdev->u.mesh.id_up_len =
4341 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4342 memcpy(wdev->u.mesh.id,
4343 nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4344 wdev->u.mesh.id_up_len);
4345 wdev_unlock(wdev);
4346 break;
4347 case NL80211_IFTYPE_NAN:
4348 case NL80211_IFTYPE_P2P_DEVICE:
4349 /*
4350 * P2P Device and NAN do not have a netdev, so don't go
4351 * through the netdev notifier and must be added here
4352 */
4353 cfg80211_init_wdev(wdev);
4354 cfg80211_register_wdev(rdev, wdev);
4355 break;
4356 default:
4357 break;
4358 }
4359
4360 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4361 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4362 nlmsg_free(msg);
4363 return -ENOBUFS;
4364 }
4365
4366 return genlmsg_reply(msg, info);
4367 }
4368
nl80211_new_interface(struct sk_buff * skb,struct genl_info * info)4369 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4370 {
4371 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4372 int ret;
4373
4374 /* to avoid failing a new interface creation due to pending removal */
4375 cfg80211_destroy_ifaces(rdev);
4376
4377 wiphy_lock(&rdev->wiphy);
4378 ret = _nl80211_new_interface(skb, info);
4379 wiphy_unlock(&rdev->wiphy);
4380
4381 return ret;
4382 }
4383
nl80211_del_interface(struct sk_buff * skb,struct genl_info * info)4384 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4385 {
4386 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4387 struct wireless_dev *wdev = info->user_ptr[1];
4388
4389 if (!rdev->ops->del_virtual_intf)
4390 return -EOPNOTSUPP;
4391
4392 /*
4393 * We hold RTNL, so this is safe, without RTNL opencount cannot
4394 * reach 0, and thus the rdev cannot be deleted.
4395 *
4396 * We need to do it for the dev_close(), since that will call
4397 * the netdev notifiers, and we need to acquire the mutex there
4398 * but don't know if we get there from here or from some other
4399 * place (e.g. "ip link set ... down").
4400 */
4401 mutex_unlock(&rdev->wiphy.mtx);
4402
4403 /*
4404 * If we remove a wireless device without a netdev then clear
4405 * user_ptr[1] so that nl80211_post_doit won't dereference it
4406 * to check if it needs to do dev_put(). Otherwise it crashes
4407 * since the wdev has been freed, unlike with a netdev where
4408 * we need the dev_put() for the netdev to really be freed.
4409 */
4410 if (!wdev->netdev)
4411 info->user_ptr[1] = NULL;
4412 else
4413 dev_close(wdev->netdev);
4414
4415 mutex_lock(&rdev->wiphy.mtx);
4416
4417 return cfg80211_remove_virtual_intf(rdev, wdev);
4418 }
4419
nl80211_set_noack_map(struct sk_buff * skb,struct genl_info * info)4420 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4421 {
4422 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4423 struct net_device *dev = info->user_ptr[1];
4424 u16 noack_map;
4425
4426 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4427 return -EINVAL;
4428
4429 if (!rdev->ops->set_noack_map)
4430 return -EOPNOTSUPP;
4431
4432 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4433
4434 return rdev_set_noack_map(rdev, dev, noack_map);
4435 }
4436
nl80211_validate_key_link_id(struct genl_info * info,struct wireless_dev * wdev,int link_id,bool pairwise)4437 static int nl80211_validate_key_link_id(struct genl_info *info,
4438 struct wireless_dev *wdev,
4439 int link_id, bool pairwise)
4440 {
4441 if (pairwise) {
4442 if (link_id != -1) {
4443 GENL_SET_ERR_MSG(info,
4444 "link ID not allowed for pairwise key");
4445 return -EINVAL;
4446 }
4447
4448 return 0;
4449 }
4450
4451 if (wdev->valid_links) {
4452 if (link_id == -1) {
4453 GENL_SET_ERR_MSG(info,
4454 "link ID must for MLO group key");
4455 return -EINVAL;
4456 }
4457 if (!(wdev->valid_links & BIT(link_id))) {
4458 GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4459 return -EINVAL;
4460 }
4461 } else if (link_id != -1) {
4462 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4463 return -EINVAL;
4464 }
4465
4466 return 0;
4467 }
4468
4469 struct get_key_cookie {
4470 struct sk_buff *msg;
4471 int error;
4472 int idx;
4473 };
4474
get_key_callback(void * c,struct key_params * params)4475 static void get_key_callback(void *c, struct key_params *params)
4476 {
4477 struct nlattr *key;
4478 struct get_key_cookie *cookie = c;
4479
4480 if ((params->seq &&
4481 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4482 params->seq_len, params->seq)) ||
4483 (params->cipher &&
4484 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4485 params->cipher)))
4486 goto nla_put_failure;
4487
4488 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4489 if (!key)
4490 goto nla_put_failure;
4491
4492 if ((params->seq &&
4493 nla_put(cookie->msg, NL80211_KEY_SEQ,
4494 params->seq_len, params->seq)) ||
4495 (params->cipher &&
4496 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4497 params->cipher)))
4498 goto nla_put_failure;
4499
4500 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4501 goto nla_put_failure;
4502
4503 nla_nest_end(cookie->msg, key);
4504
4505 return;
4506 nla_put_failure:
4507 cookie->error = 1;
4508 }
4509
nl80211_get_key(struct sk_buff * skb,struct genl_info * info)4510 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4511 {
4512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4513 int err;
4514 struct net_device *dev = info->user_ptr[1];
4515 u8 key_idx = 0;
4516 const u8 *mac_addr = NULL;
4517 bool pairwise;
4518 struct get_key_cookie cookie = {
4519 .error = 0,
4520 };
4521 void *hdr;
4522 struct sk_buff *msg;
4523 bool bigtk_support = false;
4524 int link_id = nl80211_link_id_or_invalid(info->attrs);
4525 struct wireless_dev *wdev = dev->ieee80211_ptr;
4526
4527 if (wiphy_ext_feature_isset(&rdev->wiphy,
4528 NL80211_EXT_FEATURE_BEACON_PROTECTION))
4529 bigtk_support = true;
4530
4531 if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4532 wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4533 wiphy_ext_feature_isset(&rdev->wiphy,
4534 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4535 bigtk_support = true;
4536
4537 if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4538 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4539
4540 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4541 GENL_SET_ERR_MSG(info, "BIGTK not supported");
4542 return -EINVAL;
4543 }
4544 }
4545
4546 if (info->attrs[NL80211_ATTR_MAC])
4547 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4548
4549 pairwise = !!mac_addr;
4550 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4551 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4552
4553 if (kt != NL80211_KEYTYPE_GROUP &&
4554 kt != NL80211_KEYTYPE_PAIRWISE)
4555 return -EINVAL;
4556 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4557 }
4558
4559 if (!rdev->ops->get_key)
4560 return -EOPNOTSUPP;
4561
4562 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4563 return -ENOENT;
4564
4565 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4566 if (!msg)
4567 return -ENOMEM;
4568
4569 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4570 NL80211_CMD_NEW_KEY);
4571 if (!hdr)
4572 goto nla_put_failure;
4573
4574 cookie.msg = msg;
4575 cookie.idx = key_idx;
4576
4577 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4578 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4579 goto nla_put_failure;
4580 if (mac_addr &&
4581 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4582 goto nla_put_failure;
4583
4584 err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4585 if (err)
4586 goto free_msg;
4587
4588 err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4589 &cookie, get_key_callback);
4590
4591 if (err)
4592 goto free_msg;
4593
4594 if (cookie.error)
4595 goto nla_put_failure;
4596
4597 genlmsg_end(msg, hdr);
4598 return genlmsg_reply(msg, info);
4599
4600 nla_put_failure:
4601 err = -ENOBUFS;
4602 free_msg:
4603 nlmsg_free(msg);
4604 return err;
4605 }
4606
nl80211_set_key(struct sk_buff * skb,struct genl_info * info)4607 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4608 {
4609 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4610 struct key_parse key;
4611 int err;
4612 struct net_device *dev = info->user_ptr[1];
4613 int link_id = nl80211_link_id_or_invalid(info->attrs);
4614 struct wireless_dev *wdev = dev->ieee80211_ptr;
4615
4616 err = nl80211_parse_key(info, &key);
4617 if (err)
4618 return err;
4619
4620 if (key.idx < 0)
4621 return -EINVAL;
4622
4623 /* Only support setting default key and
4624 * Extended Key ID action NL80211_KEY_SET_TX.
4625 */
4626 if (!key.def && !key.defmgmt && !key.defbeacon &&
4627 !(key.p.mode == NL80211_KEY_SET_TX))
4628 return -EINVAL;
4629
4630 wdev_lock(wdev);
4631
4632 if (key.def) {
4633 if (!rdev->ops->set_default_key) {
4634 err = -EOPNOTSUPP;
4635 goto out;
4636 }
4637
4638 err = nl80211_key_allowed(wdev);
4639 if (err)
4640 goto out;
4641
4642 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4643 if (err)
4644 goto out;
4645
4646 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4647 key.def_uni, key.def_multi);
4648
4649 if (err)
4650 goto out;
4651
4652 #ifdef CONFIG_CFG80211_WEXT
4653 wdev->wext.default_key = key.idx;
4654 #endif
4655 } else if (key.defmgmt) {
4656 if (key.def_uni || !key.def_multi) {
4657 err = -EINVAL;
4658 goto out;
4659 }
4660
4661 if (!rdev->ops->set_default_mgmt_key) {
4662 err = -EOPNOTSUPP;
4663 goto out;
4664 }
4665
4666 err = nl80211_key_allowed(wdev);
4667 if (err)
4668 goto out;
4669
4670 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4671 if (err)
4672 goto out;
4673
4674 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4675 if (err)
4676 goto out;
4677
4678 #ifdef CONFIG_CFG80211_WEXT
4679 wdev->wext.default_mgmt_key = key.idx;
4680 #endif
4681 } else if (key.defbeacon) {
4682 if (key.def_uni || !key.def_multi) {
4683 err = -EINVAL;
4684 goto out;
4685 }
4686
4687 if (!rdev->ops->set_default_beacon_key) {
4688 err = -EOPNOTSUPP;
4689 goto out;
4690 }
4691
4692 err = nl80211_key_allowed(wdev);
4693 if (err)
4694 goto out;
4695
4696 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4697 if (err)
4698 goto out;
4699
4700 err = rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4701 if (err)
4702 goto out;
4703 } else if (key.p.mode == NL80211_KEY_SET_TX &&
4704 wiphy_ext_feature_isset(&rdev->wiphy,
4705 NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4706 u8 *mac_addr = NULL;
4707
4708 if (info->attrs[NL80211_ATTR_MAC])
4709 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4710
4711 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4712 err = -EINVAL;
4713 goto out;
4714 }
4715
4716 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4717 if (err)
4718 goto out;
4719
4720 err = rdev_add_key(rdev, dev, link_id, key.idx,
4721 NL80211_KEYTYPE_PAIRWISE,
4722 mac_addr, &key.p);
4723 } else {
4724 err = -EINVAL;
4725 }
4726 out:
4727 wdev_unlock(wdev);
4728
4729 return err;
4730 }
4731
nl80211_new_key(struct sk_buff * skb,struct genl_info * info)4732 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4733 {
4734 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4735 int err;
4736 struct net_device *dev = info->user_ptr[1];
4737 struct key_parse key;
4738 const u8 *mac_addr = NULL;
4739 int link_id = nl80211_link_id_or_invalid(info->attrs);
4740 struct wireless_dev *wdev = dev->ieee80211_ptr;
4741
4742 err = nl80211_parse_key(info, &key);
4743 if (err)
4744 return err;
4745
4746 if (!key.p.key) {
4747 GENL_SET_ERR_MSG(info, "no key");
4748 return -EINVAL;
4749 }
4750
4751 if (info->attrs[NL80211_ATTR_MAC])
4752 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4753
4754 if (key.type == -1) {
4755 if (mac_addr)
4756 key.type = NL80211_KEYTYPE_PAIRWISE;
4757 else
4758 key.type = NL80211_KEYTYPE_GROUP;
4759 }
4760
4761 /* for now */
4762 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4763 key.type != NL80211_KEYTYPE_GROUP) {
4764 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4765 return -EINVAL;
4766 }
4767
4768 if (key.type == NL80211_KEYTYPE_GROUP &&
4769 info->attrs[NL80211_ATTR_VLAN_ID])
4770 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4771
4772 if (!rdev->ops->add_key)
4773 return -EOPNOTSUPP;
4774
4775 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4776 key.type == NL80211_KEYTYPE_PAIRWISE,
4777 mac_addr)) {
4778 GENL_SET_ERR_MSG(info, "key setting validation failed");
4779 return -EINVAL;
4780 }
4781
4782 wdev_lock(wdev);
4783 err = nl80211_key_allowed(wdev);
4784 if (err)
4785 GENL_SET_ERR_MSG(info, "key not allowed");
4786
4787 if (!err)
4788 err = nl80211_validate_key_link_id(info, wdev, link_id,
4789 key.type == NL80211_KEYTYPE_PAIRWISE);
4790
4791 if (!err) {
4792 err = rdev_add_key(rdev, dev, link_id, key.idx,
4793 key.type == NL80211_KEYTYPE_PAIRWISE,
4794 mac_addr, &key.p);
4795 if (err)
4796 GENL_SET_ERR_MSG(info, "key addition failed");
4797 }
4798 wdev_unlock(wdev);
4799
4800 return err;
4801 }
4802
nl80211_del_key(struct sk_buff * skb,struct genl_info * info)4803 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4804 {
4805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4806 int err;
4807 struct net_device *dev = info->user_ptr[1];
4808 u8 *mac_addr = NULL;
4809 struct key_parse key;
4810 int link_id = nl80211_link_id_or_invalid(info->attrs);
4811 struct wireless_dev *wdev = dev->ieee80211_ptr;
4812
4813 err = nl80211_parse_key(info, &key);
4814 if (err)
4815 return err;
4816
4817 if (info->attrs[NL80211_ATTR_MAC])
4818 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4819
4820 if (key.type == -1) {
4821 if (mac_addr)
4822 key.type = NL80211_KEYTYPE_PAIRWISE;
4823 else
4824 key.type = NL80211_KEYTYPE_GROUP;
4825 }
4826
4827 /* for now */
4828 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4829 key.type != NL80211_KEYTYPE_GROUP)
4830 return -EINVAL;
4831
4832 if (!cfg80211_valid_key_idx(rdev, key.idx,
4833 key.type == NL80211_KEYTYPE_PAIRWISE))
4834 return -EINVAL;
4835
4836 if (!rdev->ops->del_key)
4837 return -EOPNOTSUPP;
4838
4839 wdev_lock(wdev);
4840 err = nl80211_key_allowed(wdev);
4841
4842 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4843 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4844 err = -ENOENT;
4845
4846 if (!err)
4847 err = nl80211_validate_key_link_id(info, wdev, link_id,
4848 key.type == NL80211_KEYTYPE_PAIRWISE);
4849
4850 if (!err)
4851 err = rdev_del_key(rdev, dev, link_id, key.idx,
4852 key.type == NL80211_KEYTYPE_PAIRWISE,
4853 mac_addr);
4854
4855 #ifdef CONFIG_CFG80211_WEXT
4856 if (!err) {
4857 if (key.idx == wdev->wext.default_key)
4858 wdev->wext.default_key = -1;
4859 else if (key.idx == wdev->wext.default_mgmt_key)
4860 wdev->wext.default_mgmt_key = -1;
4861 }
4862 #endif
4863 wdev_unlock(wdev);
4864
4865 return err;
4866 }
4867
4868 /* This function returns an error or the number of nested attributes */
validate_acl_mac_addrs(struct nlattr * nl_attr)4869 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4870 {
4871 struct nlattr *attr;
4872 int n_entries = 0, tmp;
4873
4874 nla_for_each_nested(attr, nl_attr, tmp) {
4875 if (nla_len(attr) != ETH_ALEN)
4876 return -EINVAL;
4877
4878 n_entries++;
4879 }
4880
4881 return n_entries;
4882 }
4883
4884 /*
4885 * This function parses ACL information and allocates memory for ACL data.
4886 * On successful return, the calling function is responsible to free the
4887 * ACL buffer returned by this function.
4888 */
parse_acl_data(struct wiphy * wiphy,struct genl_info * info)4889 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4890 struct genl_info *info)
4891 {
4892 enum nl80211_acl_policy acl_policy;
4893 struct nlattr *attr;
4894 struct cfg80211_acl_data *acl;
4895 int i = 0, n_entries, tmp;
4896
4897 if (!wiphy->max_acl_mac_addrs)
4898 return ERR_PTR(-EOPNOTSUPP);
4899
4900 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4901 return ERR_PTR(-EINVAL);
4902
4903 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4904 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4905 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4906 return ERR_PTR(-EINVAL);
4907
4908 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4909 return ERR_PTR(-EINVAL);
4910
4911 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4912 if (n_entries < 0)
4913 return ERR_PTR(n_entries);
4914
4915 if (n_entries > wiphy->max_acl_mac_addrs)
4916 return ERR_PTR(-ENOTSUPP);
4917
4918 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4919 if (!acl)
4920 return ERR_PTR(-ENOMEM);
4921 acl->n_acl_entries = n_entries;
4922
4923 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4924 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4925 i++;
4926 }
4927 acl->acl_policy = acl_policy;
4928
4929 return acl;
4930 }
4931
nl80211_set_mac_acl(struct sk_buff * skb,struct genl_info * info)4932 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4933 {
4934 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4935 struct net_device *dev = info->user_ptr[1];
4936 struct cfg80211_acl_data *acl;
4937 int err;
4938
4939 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4940 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4941 return -EOPNOTSUPP;
4942
4943 if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4944 return -EINVAL;
4945
4946 acl = parse_acl_data(&rdev->wiphy, info);
4947 if (IS_ERR(acl))
4948 return PTR_ERR(acl);
4949
4950 err = rdev_set_mac_acl(rdev, dev, acl);
4951
4952 kfree(acl);
4953
4954 return err;
4955 }
4956
rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len)4957 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4958 u8 *rates, u8 rates_len)
4959 {
4960 u8 i;
4961 u32 mask = 0;
4962
4963 for (i = 0; i < rates_len; i++) {
4964 int rate = (rates[i] & 0x7f) * 5;
4965 int ridx;
4966
4967 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4968 struct ieee80211_rate *srate =
4969 &sband->bitrates[ridx];
4970 if (rate == srate->bitrate) {
4971 mask |= 1 << ridx;
4972 break;
4973 }
4974 }
4975 if (ridx == sband->n_bitrates)
4976 return 0; /* rate not found */
4977 }
4978
4979 return mask;
4980 }
4981
ht_rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len,u8 mcs[IEEE80211_HT_MCS_MASK_LEN])4982 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4983 u8 *rates, u8 rates_len,
4984 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4985 {
4986 u8 i;
4987
4988 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4989
4990 for (i = 0; i < rates_len; i++) {
4991 int ridx, rbit;
4992
4993 ridx = rates[i] / 8;
4994 rbit = BIT(rates[i] % 8);
4995
4996 /* check validity */
4997 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4998 return false;
4999
5000 /* check availability */
5001 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
5002 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
5003 mcs[ridx] |= rbit;
5004 else
5005 return false;
5006 }
5007
5008 return true;
5009 }
5010
vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)5011 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
5012 {
5013 u16 mcs_mask = 0;
5014
5015 switch (vht_mcs_map) {
5016 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
5017 break;
5018 case IEEE80211_VHT_MCS_SUPPORT_0_7:
5019 mcs_mask = 0x00FF;
5020 break;
5021 case IEEE80211_VHT_MCS_SUPPORT_0_8:
5022 mcs_mask = 0x01FF;
5023 break;
5024 case IEEE80211_VHT_MCS_SUPPORT_0_9:
5025 mcs_mask = 0x03FF;
5026 break;
5027 default:
5028 break;
5029 }
5030
5031 return mcs_mask;
5032 }
5033
vht_build_mcs_mask(u16 vht_mcs_map,u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])5034 static void vht_build_mcs_mask(u16 vht_mcs_map,
5035 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
5036 {
5037 u8 nss;
5038
5039 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
5040 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
5041 vht_mcs_map >>= 2;
5042 }
5043 }
5044
vht_set_mcs_mask(struct ieee80211_supported_band * sband,struct nl80211_txrate_vht * txrate,u16 mcs[NL80211_VHT_NSS_MAX])5045 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
5046 struct nl80211_txrate_vht *txrate,
5047 u16 mcs[NL80211_VHT_NSS_MAX])
5048 {
5049 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5050 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
5051 u8 i;
5052
5053 if (!sband->vht_cap.vht_supported)
5054 return false;
5055
5056 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
5057
5058 /* Build vht_mcs_mask from VHT capabilities */
5059 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5060
5061 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5062 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5063 mcs[i] = txrate->mcs[i];
5064 else
5065 return false;
5066 }
5067
5068 return true;
5069 }
5070
he_mcs_map_to_mcs_mask(u8 he_mcs_map)5071 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
5072 {
5073 switch (he_mcs_map) {
5074 case IEEE80211_HE_MCS_NOT_SUPPORTED:
5075 return 0;
5076 case IEEE80211_HE_MCS_SUPPORT_0_7:
5077 return 0x00FF;
5078 case IEEE80211_HE_MCS_SUPPORT_0_9:
5079 return 0x03FF;
5080 case IEEE80211_HE_MCS_SUPPORT_0_11:
5081 return 0xFFF;
5082 default:
5083 break;
5084 }
5085 return 0;
5086 }
5087
he_build_mcs_mask(u16 he_mcs_map,u16 he_mcs_mask[NL80211_HE_NSS_MAX])5088 static void he_build_mcs_mask(u16 he_mcs_map,
5089 u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5090 {
5091 u8 nss;
5092
5093 for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5094 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5095 he_mcs_map >>= 2;
5096 }
5097 }
5098
he_get_txmcsmap(struct genl_info * info,unsigned int link_id,const struct ieee80211_sta_he_cap * he_cap)5099 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5100 const struct ieee80211_sta_he_cap *he_cap)
5101 {
5102 struct net_device *dev = info->user_ptr[1];
5103 struct wireless_dev *wdev = dev->ieee80211_ptr;
5104 struct cfg80211_chan_def *chandef;
5105 __le16 tx_mcs;
5106
5107 chandef = wdev_chandef(wdev, link_id);
5108 if (!chandef) {
5109 /*
5110 * This is probably broken, but we never maintained
5111 * a chandef in these cases, so it always was.
5112 */
5113 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5114 }
5115
5116 switch (chandef->width) {
5117 case NL80211_CHAN_WIDTH_80P80:
5118 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5119 break;
5120 case NL80211_CHAN_WIDTH_160:
5121 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5122 break;
5123 default:
5124 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5125 break;
5126 }
5127
5128 return le16_to_cpu(tx_mcs);
5129 }
5130
he_set_mcs_mask(struct genl_info * info,struct wireless_dev * wdev,struct ieee80211_supported_band * sband,struct nl80211_txrate_he * txrate,u16 mcs[NL80211_HE_NSS_MAX],unsigned int link_id)5131 static bool he_set_mcs_mask(struct genl_info *info,
5132 struct wireless_dev *wdev,
5133 struct ieee80211_supported_band *sband,
5134 struct nl80211_txrate_he *txrate,
5135 u16 mcs[NL80211_HE_NSS_MAX],
5136 unsigned int link_id)
5137 {
5138 const struct ieee80211_sta_he_cap *he_cap;
5139 u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5140 u16 tx_mcs_map = 0;
5141 u8 i;
5142
5143 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5144 if (!he_cap)
5145 return false;
5146
5147 memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5148
5149 tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5150
5151 /* Build he_mcs_mask from HE capabilities */
5152 he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5153
5154 for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5155 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5156 mcs[i] = txrate->mcs[i];
5157 else
5158 return false;
5159 }
5160
5161 return true;
5162 }
5163
nl80211_parse_tx_bitrate_mask(struct genl_info * info,struct nlattr * attrs[],enum nl80211_attrs attr,struct cfg80211_bitrate_mask * mask,struct net_device * dev,bool default_all_enabled,unsigned int link_id)5164 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5165 struct nlattr *attrs[],
5166 enum nl80211_attrs attr,
5167 struct cfg80211_bitrate_mask *mask,
5168 struct net_device *dev,
5169 bool default_all_enabled,
5170 unsigned int link_id)
5171 {
5172 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5173 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5174 struct wireless_dev *wdev = dev->ieee80211_ptr;
5175 int rem, i;
5176 struct nlattr *tx_rates;
5177 struct ieee80211_supported_band *sband;
5178 u16 vht_tx_mcs_map, he_tx_mcs_map;
5179
5180 memset(mask, 0, sizeof(*mask));
5181 /* Default to all rates enabled */
5182 for (i = 0; i < NUM_NL80211_BANDS; i++) {
5183 const struct ieee80211_sta_he_cap *he_cap;
5184
5185 if (!default_all_enabled)
5186 break;
5187
5188 sband = rdev->wiphy.bands[i];
5189
5190 if (!sband)
5191 continue;
5192
5193 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5194 memcpy(mask->control[i].ht_mcs,
5195 sband->ht_cap.mcs.rx_mask,
5196 sizeof(mask->control[i].ht_mcs));
5197
5198 if (sband->vht_cap.vht_supported) {
5199 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5200 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5201 }
5202
5203 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5204 if (!he_cap)
5205 continue;
5206
5207 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5208 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5209
5210 mask->control[i].he_gi = 0xFF;
5211 mask->control[i].he_ltf = 0xFF;
5212 }
5213
5214 /* if no rates are given set it back to the defaults */
5215 if (!attrs[attr])
5216 goto out;
5217
5218 /* The nested attribute uses enum nl80211_band as the index. This maps
5219 * directly to the enum nl80211_band values used in cfg80211.
5220 */
5221 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5222 nla_for_each_nested(tx_rates, attrs[attr], rem) {
5223 enum nl80211_band band = nla_type(tx_rates);
5224 int err;
5225
5226 if (band < 0 || band >= NUM_NL80211_BANDS)
5227 return -EINVAL;
5228 sband = rdev->wiphy.bands[band];
5229 if (sband == NULL)
5230 return -EINVAL;
5231 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5232 tx_rates,
5233 nl80211_txattr_policy,
5234 info->extack);
5235 if (err)
5236 return err;
5237 if (tb[NL80211_TXRATE_LEGACY]) {
5238 mask->control[band].legacy = rateset_to_mask(
5239 sband,
5240 nla_data(tb[NL80211_TXRATE_LEGACY]),
5241 nla_len(tb[NL80211_TXRATE_LEGACY]));
5242 if ((mask->control[band].legacy == 0) &&
5243 nla_len(tb[NL80211_TXRATE_LEGACY]))
5244 return -EINVAL;
5245 }
5246 if (tb[NL80211_TXRATE_HT]) {
5247 if (!ht_rateset_to_mask(
5248 sband,
5249 nla_data(tb[NL80211_TXRATE_HT]),
5250 nla_len(tb[NL80211_TXRATE_HT]),
5251 mask->control[band].ht_mcs))
5252 return -EINVAL;
5253 }
5254
5255 if (tb[NL80211_TXRATE_VHT]) {
5256 if (!vht_set_mcs_mask(
5257 sband,
5258 nla_data(tb[NL80211_TXRATE_VHT]),
5259 mask->control[band].vht_mcs))
5260 return -EINVAL;
5261 }
5262
5263 if (tb[NL80211_TXRATE_GI]) {
5264 mask->control[band].gi =
5265 nla_get_u8(tb[NL80211_TXRATE_GI]);
5266 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5267 return -EINVAL;
5268 }
5269 if (tb[NL80211_TXRATE_HE] &&
5270 !he_set_mcs_mask(info, wdev, sband,
5271 nla_data(tb[NL80211_TXRATE_HE]),
5272 mask->control[band].he_mcs,
5273 link_id))
5274 return -EINVAL;
5275
5276 if (tb[NL80211_TXRATE_HE_GI])
5277 mask->control[band].he_gi =
5278 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5279 if (tb[NL80211_TXRATE_HE_LTF])
5280 mask->control[band].he_ltf =
5281 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5282
5283 if (mask->control[band].legacy == 0) {
5284 /* don't allow empty legacy rates if HT, VHT or HE
5285 * are not even supported.
5286 */
5287 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5288 rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5289 ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5290 return -EINVAL;
5291
5292 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5293 if (mask->control[band].ht_mcs[i])
5294 goto out;
5295
5296 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5297 if (mask->control[band].vht_mcs[i])
5298 goto out;
5299
5300 for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5301 if (mask->control[band].he_mcs[i])
5302 goto out;
5303
5304 /* legacy and mcs rates may not be both empty */
5305 return -EINVAL;
5306 }
5307 }
5308
5309 out:
5310 return 0;
5311 }
5312
validate_beacon_tx_rate(struct cfg80211_registered_device * rdev,enum nl80211_band band,struct cfg80211_bitrate_mask * beacon_rate)5313 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5314 enum nl80211_band band,
5315 struct cfg80211_bitrate_mask *beacon_rate)
5316 {
5317 u32 count_ht, count_vht, count_he, i;
5318 u32 rate = beacon_rate->control[band].legacy;
5319
5320 /* Allow only one rate */
5321 if (hweight32(rate) > 1)
5322 return -EINVAL;
5323
5324 count_ht = 0;
5325 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5326 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5327 return -EINVAL;
5328 } else if (beacon_rate->control[band].ht_mcs[i]) {
5329 count_ht++;
5330 if (count_ht > 1)
5331 return -EINVAL;
5332 }
5333 if (count_ht && rate)
5334 return -EINVAL;
5335 }
5336
5337 count_vht = 0;
5338 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5339 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5340 return -EINVAL;
5341 } else if (beacon_rate->control[band].vht_mcs[i]) {
5342 count_vht++;
5343 if (count_vht > 1)
5344 return -EINVAL;
5345 }
5346 if (count_vht && rate)
5347 return -EINVAL;
5348 }
5349
5350 count_he = 0;
5351 for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5352 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5353 return -EINVAL;
5354 } else if (beacon_rate->control[band].he_mcs[i]) {
5355 count_he++;
5356 if (count_he > 1)
5357 return -EINVAL;
5358 }
5359 if (count_he && rate)
5360 return -EINVAL;
5361 }
5362
5363 if ((count_ht && count_vht && count_he) ||
5364 (!rate && !count_ht && !count_vht && !count_he))
5365 return -EINVAL;
5366
5367 if (rate &&
5368 !wiphy_ext_feature_isset(&rdev->wiphy,
5369 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5370 return -EINVAL;
5371 if (count_ht &&
5372 !wiphy_ext_feature_isset(&rdev->wiphy,
5373 NL80211_EXT_FEATURE_BEACON_RATE_HT))
5374 return -EINVAL;
5375 if (count_vht &&
5376 !wiphy_ext_feature_isset(&rdev->wiphy,
5377 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5378 return -EINVAL;
5379 if (count_he &&
5380 !wiphy_ext_feature_isset(&rdev->wiphy,
5381 NL80211_EXT_FEATURE_BEACON_RATE_HE))
5382 return -EINVAL;
5383
5384 return 0;
5385 }
5386
nl80211_parse_mbssid_config(struct wiphy * wiphy,struct net_device * dev,struct nlattr * attrs,struct cfg80211_mbssid_config * config,u8 num_elems)5387 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5388 struct net_device *dev,
5389 struct nlattr *attrs,
5390 struct cfg80211_mbssid_config *config,
5391 u8 num_elems)
5392 {
5393 struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5394
5395 if (!wiphy->mbssid_max_interfaces)
5396 return -EOPNOTSUPP;
5397
5398 if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5399 NULL) ||
5400 !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5401 return -EINVAL;
5402
5403 config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5404 if (config->ema) {
5405 if (!wiphy->ema_max_profile_periodicity)
5406 return -EOPNOTSUPP;
5407
5408 if (num_elems > wiphy->ema_max_profile_periodicity)
5409 return -EINVAL;
5410 }
5411
5412 config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5413 if (config->index >= wiphy->mbssid_max_interfaces ||
5414 (!config->index && !num_elems))
5415 return -EINVAL;
5416
5417 if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5418 u32 tx_ifindex =
5419 nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5420
5421 if ((!config->index && tx_ifindex != dev->ifindex) ||
5422 (config->index && tx_ifindex == dev->ifindex))
5423 return -EINVAL;
5424
5425 if (tx_ifindex != dev->ifindex) {
5426 struct net_device *tx_netdev =
5427 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5428
5429 if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5430 tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5431 tx_netdev->ieee80211_ptr->iftype !=
5432 NL80211_IFTYPE_AP) {
5433 dev_put(tx_netdev);
5434 return -EINVAL;
5435 }
5436
5437 config->tx_wdev = tx_netdev->ieee80211_ptr;
5438 } else {
5439 config->tx_wdev = dev->ieee80211_ptr;
5440 }
5441 } else if (!config->index) {
5442 config->tx_wdev = dev->ieee80211_ptr;
5443 } else {
5444 return -EINVAL;
5445 }
5446
5447 return 0;
5448 }
5449
5450 static struct cfg80211_mbssid_elems *
nl80211_parse_mbssid_elems(struct wiphy * wiphy,struct nlattr * attrs)5451 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5452 {
5453 struct nlattr *nl_elems;
5454 struct cfg80211_mbssid_elems *elems;
5455 int rem_elems;
5456 u8 i = 0, num_elems = 0;
5457
5458 if (!wiphy->mbssid_max_interfaces)
5459 return ERR_PTR(-EINVAL);
5460
5461 nla_for_each_nested(nl_elems, attrs, rem_elems) {
5462 if (num_elems >= 255)
5463 return ERR_PTR(-EINVAL);
5464 num_elems++;
5465 }
5466
5467 elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5468 if (!elems)
5469 return ERR_PTR(-ENOMEM);
5470 elems->cnt = num_elems;
5471
5472 nla_for_each_nested(nl_elems, attrs, rem_elems) {
5473 elems->elem[i].data = nla_data(nl_elems);
5474 elems->elem[i].len = nla_len(nl_elems);
5475 i++;
5476 }
5477 return elems;
5478 }
5479
5480 static struct cfg80211_rnr_elems *
nl80211_parse_rnr_elems(struct wiphy * wiphy,struct nlattr * attrs,struct netlink_ext_ack * extack)5481 nl80211_parse_rnr_elems(struct wiphy *wiphy, struct nlattr *attrs,
5482 struct netlink_ext_ack *extack)
5483 {
5484 struct nlattr *nl_elems;
5485 struct cfg80211_rnr_elems *elems;
5486 int rem_elems;
5487 u8 i = 0, num_elems = 0;
5488
5489 nla_for_each_nested(nl_elems, attrs, rem_elems) {
5490 int ret;
5491
5492 ret = validate_ie_attr(nl_elems, extack);
5493 if (ret)
5494 return ERR_PTR(ret);
5495
5496 num_elems++;
5497 }
5498
5499 elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5500 if (!elems)
5501 return ERR_PTR(-ENOMEM);
5502 elems->cnt = num_elems;
5503
5504 nla_for_each_nested(nl_elems, attrs, rem_elems) {
5505 elems->elem[i].data = nla_data(nl_elems);
5506 elems->elem[i].len = nla_len(nl_elems);
5507 i++;
5508 }
5509 return elems;
5510 }
5511
nl80211_parse_he_bss_color(struct nlattr * attrs,struct cfg80211_he_bss_color * he_bss_color)5512 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5513 struct cfg80211_he_bss_color *he_bss_color)
5514 {
5515 struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5516 int err;
5517
5518 err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5519 he_bss_color_policy, NULL);
5520 if (err)
5521 return err;
5522
5523 if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5524 return -EINVAL;
5525
5526 he_bss_color->color =
5527 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5528 he_bss_color->enabled =
5529 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5530 he_bss_color->partial =
5531 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5532
5533 return 0;
5534 }
5535
nl80211_parse_beacon(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct cfg80211_beacon_data * bcn,struct netlink_ext_ack * extack)5536 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5537 struct nlattr *attrs[],
5538 struct cfg80211_beacon_data *bcn,
5539 struct netlink_ext_ack *extack)
5540 {
5541 bool haveinfo = false;
5542 int err;
5543
5544 memset(bcn, 0, sizeof(*bcn));
5545
5546 bcn->link_id = nl80211_link_id(attrs);
5547
5548 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5549 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5550 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5551 if (!bcn->head_len)
5552 return -EINVAL;
5553 haveinfo = true;
5554 }
5555
5556 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5557 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5558 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5559 haveinfo = true;
5560 }
5561
5562 if (!haveinfo)
5563 return -EINVAL;
5564
5565 if (attrs[NL80211_ATTR_IE]) {
5566 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5567 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5568 }
5569
5570 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5571 bcn->proberesp_ies =
5572 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5573 bcn->proberesp_ies_len =
5574 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5575 }
5576
5577 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5578 bcn->assocresp_ies =
5579 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5580 bcn->assocresp_ies_len =
5581 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5582 }
5583
5584 if (attrs[NL80211_ATTR_PROBE_RESP]) {
5585 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5586 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5587 }
5588
5589 if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5590 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5591
5592 err = nla_parse_nested_deprecated(tb,
5593 NL80211_FTM_RESP_ATTR_MAX,
5594 attrs[NL80211_ATTR_FTM_RESPONDER],
5595 NULL, NULL);
5596 if (err)
5597 return err;
5598
5599 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5600 wiphy_ext_feature_isset(&rdev->wiphy,
5601 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5602 bcn->ftm_responder = 1;
5603 else
5604 return -EOPNOTSUPP;
5605
5606 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5607 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5608 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5609 }
5610
5611 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5612 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5613 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5614 }
5615 } else {
5616 bcn->ftm_responder = -1;
5617 }
5618
5619 if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5620 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5621 &bcn->he_bss_color);
5622 if (err)
5623 return err;
5624 bcn->he_bss_color_valid = true;
5625 }
5626
5627 if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5628 struct cfg80211_mbssid_elems *mbssid =
5629 nl80211_parse_mbssid_elems(&rdev->wiphy,
5630 attrs[NL80211_ATTR_MBSSID_ELEMS]);
5631
5632 if (IS_ERR(mbssid))
5633 return PTR_ERR(mbssid);
5634
5635 bcn->mbssid_ies = mbssid;
5636
5637 if (bcn->mbssid_ies && attrs[NL80211_ATTR_EMA_RNR_ELEMS]) {
5638 struct cfg80211_rnr_elems *rnr =
5639 nl80211_parse_rnr_elems(&rdev->wiphy,
5640 attrs[NL80211_ATTR_EMA_RNR_ELEMS],
5641 extack);
5642
5643 if (IS_ERR(rnr))
5644 return PTR_ERR(rnr);
5645
5646 if (rnr && rnr->cnt < bcn->mbssid_ies->cnt)
5647 return -EINVAL;
5648
5649 bcn->rnr_ies = rnr;
5650 }
5651 }
5652
5653 return 0;
5654 }
5655
nl80211_parse_he_obss_pd(struct nlattr * attrs,struct ieee80211_he_obss_pd * he_obss_pd)5656 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5657 struct ieee80211_he_obss_pd *he_obss_pd)
5658 {
5659 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5660 int err;
5661
5662 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5663 he_obss_pd_policy, NULL);
5664 if (err)
5665 return err;
5666
5667 if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5668 return -EINVAL;
5669
5670 he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5671
5672 if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5673 he_obss_pd->min_offset =
5674 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5675 if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5676 he_obss_pd->max_offset =
5677 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5678 if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5679 he_obss_pd->non_srg_max_offset =
5680 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5681
5682 if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5683 return -EINVAL;
5684
5685 if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5686 memcpy(he_obss_pd->bss_color_bitmap,
5687 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5688 sizeof(he_obss_pd->bss_color_bitmap));
5689
5690 if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5691 memcpy(he_obss_pd->partial_bssid_bitmap,
5692 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5693 sizeof(he_obss_pd->partial_bssid_bitmap));
5694
5695 he_obss_pd->enable = true;
5696
5697 return 0;
5698 }
5699
nl80211_parse_fils_discovery(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)5700 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5701 struct nlattr *attrs,
5702 struct cfg80211_ap_settings *params)
5703 {
5704 struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5705 int ret;
5706 struct cfg80211_fils_discovery *fd = ¶ms->fils_discovery;
5707
5708 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5709 NL80211_EXT_FEATURE_FILS_DISCOVERY))
5710 return -EINVAL;
5711
5712 ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5713 NULL, NULL);
5714 if (ret)
5715 return ret;
5716
5717 if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5718 !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5719 !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5720 return -EINVAL;
5721
5722 fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5723 fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5724 fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5725 fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5726
5727 return 0;
5728 }
5729
5730 static int
nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)5731 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5732 struct nlattr *attrs,
5733 struct cfg80211_ap_settings *params)
5734 {
5735 struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5736 int ret;
5737 struct cfg80211_unsol_bcast_probe_resp *presp =
5738 ¶ms->unsol_bcast_probe_resp;
5739
5740 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5741 NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5742 return -EINVAL;
5743
5744 ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5745 attrs, NULL, NULL);
5746 if (ret)
5747 return ret;
5748
5749 if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5750 !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5751 return -EINVAL;
5752
5753 presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5754 presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5755 presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5756 return 0;
5757 }
5758
nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings * params,const struct element * rates)5759 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5760 const struct element *rates)
5761 {
5762 int i;
5763
5764 if (!rates)
5765 return;
5766
5767 for (i = 0; i < rates->datalen; i++) {
5768 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5769 params->ht_required = true;
5770 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5771 params->vht_required = true;
5772 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5773 params->he_required = true;
5774 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5775 params->sae_h2e_required = true;
5776 }
5777 }
5778
5779 /*
5780 * Since the nl80211 API didn't include, from the beginning, attributes about
5781 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5782 * benefit of drivers that rebuild IEs in the firmware.
5783 */
nl80211_calculate_ap_params(struct cfg80211_ap_settings * params)5784 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5785 {
5786 const struct cfg80211_beacon_data *bcn = ¶ms->beacon;
5787 size_t ies_len = bcn->tail_len;
5788 const u8 *ies = bcn->tail;
5789 const struct element *rates;
5790 const struct element *cap;
5791
5792 rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5793 nl80211_check_ap_rate_selectors(params, rates);
5794
5795 rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5796 nl80211_check_ap_rate_selectors(params, rates);
5797
5798 cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5799 if (cap && cap->datalen >= sizeof(*params->ht_cap))
5800 params->ht_cap = (void *)cap->data;
5801 cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5802 if (cap && cap->datalen >= sizeof(*params->vht_cap))
5803 params->vht_cap = (void *)cap->data;
5804 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5805 if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5806 params->he_cap = (void *)(cap->data + 1);
5807 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5808 if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5809 params->he_oper = (void *)(cap->data + 1);
5810 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5811 if (cap) {
5812 if (!cap->datalen)
5813 return -EINVAL;
5814 params->eht_cap = (void *)(cap->data + 1);
5815 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5816 (const u8 *)params->eht_cap,
5817 cap->datalen - 1, true))
5818 return -EINVAL;
5819 }
5820 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5821 if (cap) {
5822 if (!cap->datalen)
5823 return -EINVAL;
5824 params->eht_oper = (void *)(cap->data + 1);
5825 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5826 cap->datalen - 1))
5827 return -EINVAL;
5828 }
5829 return 0;
5830 }
5831
nl80211_get_ap_channel(struct cfg80211_registered_device * rdev,struct cfg80211_ap_settings * params)5832 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5833 struct cfg80211_ap_settings *params)
5834 {
5835 struct wireless_dev *wdev;
5836
5837 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5838 if (wdev->iftype != NL80211_IFTYPE_AP &&
5839 wdev->iftype != NL80211_IFTYPE_P2P_GO)
5840 continue;
5841
5842 if (!wdev->u.ap.preset_chandef.chan)
5843 continue;
5844
5845 params->chandef = wdev->u.ap.preset_chandef;
5846 return true;
5847 }
5848
5849 return false;
5850 }
5851
nl80211_valid_auth_type(struct cfg80211_registered_device * rdev,enum nl80211_auth_type auth_type,enum nl80211_commands cmd)5852 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5853 enum nl80211_auth_type auth_type,
5854 enum nl80211_commands cmd)
5855 {
5856 if (auth_type > NL80211_AUTHTYPE_MAX)
5857 return false;
5858
5859 switch (cmd) {
5860 case NL80211_CMD_AUTHENTICATE:
5861 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5862 auth_type == NL80211_AUTHTYPE_SAE)
5863 return false;
5864 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5865 NL80211_EXT_FEATURE_FILS_STA) &&
5866 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5867 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5868 auth_type == NL80211_AUTHTYPE_FILS_PK))
5869 return false;
5870 return true;
5871 case NL80211_CMD_CONNECT:
5872 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5873 !wiphy_ext_feature_isset(&rdev->wiphy,
5874 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5875 auth_type == NL80211_AUTHTYPE_SAE)
5876 return false;
5877
5878 /* FILS with SK PFS or PK not supported yet */
5879 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5880 auth_type == NL80211_AUTHTYPE_FILS_PK)
5881 return false;
5882 if (!wiphy_ext_feature_isset(
5883 &rdev->wiphy,
5884 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5885 auth_type == NL80211_AUTHTYPE_FILS_SK)
5886 return false;
5887 return true;
5888 case NL80211_CMD_START_AP:
5889 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5890 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5891 auth_type == NL80211_AUTHTYPE_SAE)
5892 return false;
5893 /* FILS not supported yet */
5894 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5895 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5896 auth_type == NL80211_AUTHTYPE_FILS_PK)
5897 return false;
5898 return true;
5899 default:
5900 return false;
5901 }
5902 }
5903
nl80211_send_ap_started(struct wireless_dev * wdev,unsigned int link_id)5904 static void nl80211_send_ap_started(struct wireless_dev *wdev,
5905 unsigned int link_id)
5906 {
5907 struct wiphy *wiphy = wdev->wiphy;
5908 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
5909 struct sk_buff *msg;
5910 void *hdr;
5911
5912 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5913 if (!msg)
5914 return;
5915
5916 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP);
5917 if (!hdr)
5918 goto out;
5919
5920 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
5921 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
5922 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
5923 NL80211_ATTR_PAD) ||
5924 (wdev->u.ap.ssid_len &&
5925 nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
5926 wdev->u.ap.ssid)) ||
5927 (wdev->valid_links &&
5928 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
5929 goto out;
5930
5931 genlmsg_end(msg, hdr);
5932
5933 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
5934 NL80211_MCGRP_MLME, GFP_KERNEL);
5935 return;
5936 out:
5937 nlmsg_free(msg);
5938 }
5939
nl80211_validate_ap_phy_operation(struct cfg80211_ap_settings * params)5940 static int nl80211_validate_ap_phy_operation(struct cfg80211_ap_settings *params)
5941 {
5942 struct ieee80211_channel *channel = params->chandef.chan;
5943
5944 if ((params->he_cap || params->he_oper) &&
5945 (channel->flags & IEEE80211_CHAN_NO_HE))
5946 return -EOPNOTSUPP;
5947
5948 if ((params->eht_cap || params->eht_oper) &&
5949 (channel->flags & IEEE80211_CHAN_NO_EHT))
5950 return -EOPNOTSUPP;
5951
5952 return 0;
5953 }
5954
nl80211_start_ap(struct sk_buff * skb,struct genl_info * info)5955 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5956 {
5957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5958 unsigned int link_id = nl80211_link_id(info->attrs);
5959 struct net_device *dev = info->user_ptr[1];
5960 struct wireless_dev *wdev = dev->ieee80211_ptr;
5961 struct cfg80211_ap_settings *params;
5962 int err;
5963
5964 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5965 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5966 return -EOPNOTSUPP;
5967
5968 if (!rdev->ops->start_ap)
5969 return -EOPNOTSUPP;
5970
5971 if (wdev->links[link_id].ap.beacon_interval)
5972 return -EALREADY;
5973
5974 /* these are required for START_AP */
5975 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5976 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5977 !info->attrs[NL80211_ATTR_BEACON_HEAD])
5978 return -EINVAL;
5979
5980 params = kzalloc(sizeof(*params), GFP_KERNEL);
5981 if (!params)
5982 return -ENOMEM;
5983
5984 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms->beacon,
5985 info->extack);
5986 if (err)
5987 goto out;
5988
5989 params->beacon_interval =
5990 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5991 params->dtim_period =
5992 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5993
5994 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5995 params->beacon_interval);
5996 if (err)
5997 goto out;
5998
5999 /*
6000 * In theory, some of these attributes should be required here
6001 * but since they were not used when the command was originally
6002 * added, keep them optional for old user space programs to let
6003 * them continue to work with drivers that do not need the
6004 * additional information -- drivers must check!
6005 */
6006 if (info->attrs[NL80211_ATTR_SSID]) {
6007 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6008 params->ssid_len =
6009 nla_len(info->attrs[NL80211_ATTR_SSID]);
6010 if (params->ssid_len == 0) {
6011 err = -EINVAL;
6012 goto out;
6013 }
6014
6015 if (wdev->u.ap.ssid_len &&
6016 (wdev->u.ap.ssid_len != params->ssid_len ||
6017 memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
6018 /* require identical SSID for MLO */
6019 err = -EINVAL;
6020 goto out;
6021 }
6022 } else if (wdev->valid_links) {
6023 /* require SSID for MLO */
6024 err = -EINVAL;
6025 goto out;
6026 }
6027
6028 if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
6029 params->hidden_ssid = nla_get_u32(
6030 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
6031
6032 params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6033
6034 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6035 params->auth_type = nla_get_u32(
6036 info->attrs[NL80211_ATTR_AUTH_TYPE]);
6037 if (!nl80211_valid_auth_type(rdev, params->auth_type,
6038 NL80211_CMD_START_AP)) {
6039 err = -EINVAL;
6040 goto out;
6041 }
6042 } else
6043 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6044
6045 err = nl80211_crypto_settings(rdev, info, ¶ms->crypto,
6046 NL80211_MAX_NR_CIPHER_SUITES);
6047 if (err)
6048 goto out;
6049
6050 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
6051 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
6052 err = -EOPNOTSUPP;
6053 goto out;
6054 }
6055 params->inactivity_timeout = nla_get_u16(
6056 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
6057 }
6058
6059 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6060 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6061 err = -EINVAL;
6062 goto out;
6063 }
6064 params->p2p_ctwindow =
6065 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6066 if (params->p2p_ctwindow != 0 &&
6067 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
6068 err = -EINVAL;
6069 goto out;
6070 }
6071 }
6072
6073 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6074 u8 tmp;
6075
6076 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6077 err = -EINVAL;
6078 goto out;
6079 }
6080 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6081 params->p2p_opp_ps = tmp;
6082 if (params->p2p_opp_ps != 0 &&
6083 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
6084 err = -EINVAL;
6085 goto out;
6086 }
6087 }
6088
6089 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6090 err = nl80211_parse_chandef(rdev, info, ¶ms->chandef);
6091 if (err)
6092 goto out;
6093 } else if (wdev->valid_links) {
6094 /* with MLD need to specify the channel configuration */
6095 err = -EINVAL;
6096 goto out;
6097 } else if (wdev->u.ap.preset_chandef.chan) {
6098 params->chandef = wdev->u.ap.preset_chandef;
6099 } else if (!nl80211_get_ap_channel(rdev, params)) {
6100 err = -EINVAL;
6101 goto out;
6102 }
6103
6104 if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
6105 err = nl80211_parse_punct_bitmap(rdev, info,
6106 ¶ms->chandef,
6107 ¶ms->punct_bitmap);
6108 if (err)
6109 goto out;
6110 }
6111
6112 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms->chandef,
6113 wdev->iftype)) {
6114 err = -EINVAL;
6115 goto out;
6116 }
6117
6118 wdev_lock(wdev);
6119
6120 if (info->attrs[NL80211_ATTR_TX_RATES]) {
6121 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
6122 NL80211_ATTR_TX_RATES,
6123 ¶ms->beacon_rate,
6124 dev, false, link_id);
6125 if (err)
6126 goto out_unlock;
6127
6128 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
6129 ¶ms->beacon_rate);
6130 if (err)
6131 goto out_unlock;
6132 }
6133
6134 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
6135 params->smps_mode =
6136 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
6137 switch (params->smps_mode) {
6138 case NL80211_SMPS_OFF:
6139 break;
6140 case NL80211_SMPS_STATIC:
6141 if (!(rdev->wiphy.features &
6142 NL80211_FEATURE_STATIC_SMPS)) {
6143 err = -EINVAL;
6144 goto out_unlock;
6145 }
6146 break;
6147 case NL80211_SMPS_DYNAMIC:
6148 if (!(rdev->wiphy.features &
6149 NL80211_FEATURE_DYNAMIC_SMPS)) {
6150 err = -EINVAL;
6151 goto out_unlock;
6152 }
6153 break;
6154 default:
6155 err = -EINVAL;
6156 goto out_unlock;
6157 }
6158 } else {
6159 params->smps_mode = NL80211_SMPS_OFF;
6160 }
6161
6162 params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
6163 if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
6164 err = -EOPNOTSUPP;
6165 goto out_unlock;
6166 }
6167
6168 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
6169 params->acl = parse_acl_data(&rdev->wiphy, info);
6170 if (IS_ERR(params->acl)) {
6171 err = PTR_ERR(params->acl);
6172 params->acl = NULL;
6173 goto out_unlock;
6174 }
6175 }
6176
6177 params->twt_responder =
6178 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
6179
6180 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
6181 err = nl80211_parse_he_obss_pd(
6182 info->attrs[NL80211_ATTR_HE_OBSS_PD],
6183 ¶ms->he_obss_pd);
6184 if (err)
6185 goto out_unlock;
6186 }
6187
6188 if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
6189 err = nl80211_parse_fils_discovery(rdev,
6190 info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6191 params);
6192 if (err)
6193 goto out_unlock;
6194 }
6195
6196 if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6197 err = nl80211_parse_unsol_bcast_probe_resp(
6198 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6199 params);
6200 if (err)
6201 goto out_unlock;
6202 }
6203
6204 if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6205 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6206 info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6207 ¶ms->mbssid_config,
6208 params->beacon.mbssid_ies ?
6209 params->beacon.mbssid_ies->cnt :
6210 0);
6211 if (err)
6212 goto out_unlock;
6213 }
6214
6215 if (!params->mbssid_config.ema && params->beacon.rnr_ies) {
6216 err = -EINVAL;
6217 goto out_unlock;
6218 }
6219
6220 err = nl80211_calculate_ap_params(params);
6221 if (err)
6222 goto out_unlock;
6223
6224 err = nl80211_validate_ap_phy_operation(params);
6225 if (err)
6226 goto out_unlock;
6227
6228 if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6229 params->flags = nla_get_u32(
6230 info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6231 else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6232 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6233
6234 if (wdev->conn_owner_nlportid &&
6235 info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6236 wdev->conn_owner_nlportid != info->snd_portid) {
6237 err = -EINVAL;
6238 goto out_unlock;
6239 }
6240
6241 /* FIXME: validate MLO/link-id against driver capabilities */
6242
6243 err = rdev_start_ap(rdev, dev, params);
6244 if (!err) {
6245 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6246 wdev->links[link_id].ap.chandef = params->chandef;
6247 wdev->u.ap.ssid_len = params->ssid_len;
6248 memcpy(wdev->u.ap.ssid, params->ssid,
6249 params->ssid_len);
6250
6251 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6252 wdev->conn_owner_nlportid = info->snd_portid;
6253
6254 nl80211_send_ap_started(wdev, link_id);
6255 }
6256 out_unlock:
6257 wdev_unlock(wdev);
6258 out:
6259 kfree(params->acl);
6260 kfree(params->beacon.mbssid_ies);
6261 if (params->mbssid_config.tx_wdev &&
6262 params->mbssid_config.tx_wdev->netdev &&
6263 params->mbssid_config.tx_wdev->netdev != dev)
6264 dev_put(params->mbssid_config.tx_wdev->netdev);
6265 kfree(params->beacon.rnr_ies);
6266 kfree(params);
6267
6268 return err;
6269 }
6270
nl80211_set_beacon(struct sk_buff * skb,struct genl_info * info)6271 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6272 {
6273 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6274 unsigned int link_id = nl80211_link_id(info->attrs);
6275 struct net_device *dev = info->user_ptr[1];
6276 struct wireless_dev *wdev = dev->ieee80211_ptr;
6277 struct cfg80211_beacon_data params;
6278 int err;
6279
6280 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6281 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6282 return -EOPNOTSUPP;
6283
6284 if (!rdev->ops->change_beacon)
6285 return -EOPNOTSUPP;
6286
6287 if (!wdev->links[link_id].ap.beacon_interval)
6288 return -EINVAL;
6289
6290 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms, info->extack);
6291 if (err)
6292 goto out;
6293
6294 wdev_lock(wdev);
6295 err = rdev_change_beacon(rdev, dev, ¶ms);
6296 wdev_unlock(wdev);
6297
6298 out:
6299 kfree(params.mbssid_ies);
6300 kfree(params.rnr_ies);
6301 return err;
6302 }
6303
nl80211_stop_ap(struct sk_buff * skb,struct genl_info * info)6304 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6305 {
6306 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6307 unsigned int link_id = nl80211_link_id(info->attrs);
6308 struct net_device *dev = info->user_ptr[1];
6309
6310 return cfg80211_stop_ap(rdev, dev, link_id, false);
6311 }
6312
6313 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6314 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6315 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6316 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6317 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6318 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6319 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6320 };
6321
parse_station_flags(struct genl_info * info,enum nl80211_iftype iftype,struct station_parameters * params)6322 static int parse_station_flags(struct genl_info *info,
6323 enum nl80211_iftype iftype,
6324 struct station_parameters *params)
6325 {
6326 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6327 struct nlattr *nla;
6328 int flag;
6329
6330 /*
6331 * Try parsing the new attribute first so userspace
6332 * can specify both for older kernels.
6333 */
6334 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6335 if (nla) {
6336 struct nl80211_sta_flag_update *sta_flags;
6337
6338 sta_flags = nla_data(nla);
6339 params->sta_flags_mask = sta_flags->mask;
6340 params->sta_flags_set = sta_flags->set;
6341 params->sta_flags_set &= params->sta_flags_mask;
6342 if ((params->sta_flags_mask |
6343 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6344 return -EINVAL;
6345 return 0;
6346 }
6347
6348 /* if present, parse the old attribute */
6349
6350 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6351 if (!nla)
6352 return 0;
6353
6354 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6355 return -EINVAL;
6356
6357 /*
6358 * Only allow certain flags for interface types so that
6359 * other attributes are silently ignored. Remember that
6360 * this is backward compatibility code with old userspace
6361 * and shouldn't be hit in other cases anyway.
6362 */
6363 switch (iftype) {
6364 case NL80211_IFTYPE_AP:
6365 case NL80211_IFTYPE_AP_VLAN:
6366 case NL80211_IFTYPE_P2P_GO:
6367 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6368 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6369 BIT(NL80211_STA_FLAG_WME) |
6370 BIT(NL80211_STA_FLAG_MFP);
6371 break;
6372 case NL80211_IFTYPE_P2P_CLIENT:
6373 case NL80211_IFTYPE_STATION:
6374 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6375 BIT(NL80211_STA_FLAG_TDLS_PEER);
6376 break;
6377 case NL80211_IFTYPE_MESH_POINT:
6378 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6379 BIT(NL80211_STA_FLAG_MFP) |
6380 BIT(NL80211_STA_FLAG_AUTHORIZED);
6381 break;
6382 default:
6383 return -EINVAL;
6384 }
6385
6386 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6387 if (flags[flag]) {
6388 params->sta_flags_set |= (1<<flag);
6389
6390 /* no longer support new API additions in old API */
6391 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6392 return -EINVAL;
6393 }
6394 }
6395
6396 return 0;
6397 }
6398
nl80211_put_sta_rate(struct sk_buff * msg,struct rate_info * info,int attr)6399 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6400 {
6401 struct nlattr *rate;
6402 u32 bitrate;
6403 u16 bitrate_compat;
6404 enum nl80211_rate_info rate_flg;
6405
6406 rate = nla_nest_start_noflag(msg, attr);
6407 if (!rate)
6408 return false;
6409
6410 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6411 bitrate = cfg80211_calculate_bitrate(info);
6412 /* report 16-bit bitrate only if we can */
6413 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6414 if (bitrate > 0 &&
6415 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6416 return false;
6417 if (bitrate_compat > 0 &&
6418 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6419 return false;
6420
6421 switch (info->bw) {
6422 case RATE_INFO_BW_1:
6423 rate_flg = NL80211_RATE_INFO_1_MHZ_WIDTH;
6424 break;
6425 case RATE_INFO_BW_2:
6426 rate_flg = NL80211_RATE_INFO_2_MHZ_WIDTH;
6427 break;
6428 case RATE_INFO_BW_4:
6429 rate_flg = NL80211_RATE_INFO_4_MHZ_WIDTH;
6430 break;
6431 case RATE_INFO_BW_5:
6432 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6433 break;
6434 case RATE_INFO_BW_8:
6435 rate_flg = NL80211_RATE_INFO_8_MHZ_WIDTH;
6436 break;
6437 case RATE_INFO_BW_10:
6438 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6439 break;
6440 case RATE_INFO_BW_16:
6441 rate_flg = NL80211_RATE_INFO_16_MHZ_WIDTH;
6442 break;
6443 default:
6444 WARN_ON(1);
6445 fallthrough;
6446 case RATE_INFO_BW_20:
6447 rate_flg = 0;
6448 break;
6449 case RATE_INFO_BW_40:
6450 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6451 break;
6452 case RATE_INFO_BW_80:
6453 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6454 break;
6455 case RATE_INFO_BW_160:
6456 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6457 break;
6458 case RATE_INFO_BW_HE_RU:
6459 rate_flg = 0;
6460 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6461 break;
6462 case RATE_INFO_BW_320:
6463 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6464 break;
6465 case RATE_INFO_BW_EHT_RU:
6466 rate_flg = 0;
6467 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6468 break;
6469 }
6470
6471 if (rate_flg && nla_put_flag(msg, rate_flg))
6472 return false;
6473
6474 if (info->flags & RATE_INFO_FLAGS_MCS) {
6475 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6476 return false;
6477 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6478 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6479 return false;
6480 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6481 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6482 return false;
6483 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6484 return false;
6485 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6486 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6487 return false;
6488 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6489 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6490 return false;
6491 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6492 return false;
6493 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6494 return false;
6495 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6496 return false;
6497 if (info->bw == RATE_INFO_BW_HE_RU &&
6498 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6499 info->he_ru_alloc))
6500 return false;
6501 } else if (info->flags & RATE_INFO_FLAGS_S1G_MCS) {
6502 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_MCS, info->mcs))
6503 return false;
6504 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_NSS, info->nss))
6505 return false;
6506 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6507 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6508 return false;
6509 } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6510 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6511 return false;
6512 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6513 return false;
6514 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6515 return false;
6516 if (info->bw == RATE_INFO_BW_EHT_RU &&
6517 nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6518 info->eht_ru_alloc))
6519 return false;
6520 }
6521
6522 nla_nest_end(msg, rate);
6523 return true;
6524 }
6525
nl80211_put_signal(struct sk_buff * msg,u8 mask,s8 * signal,int id)6526 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6527 int id)
6528 {
6529 void *attr;
6530 int i = 0;
6531
6532 if (!mask)
6533 return true;
6534
6535 attr = nla_nest_start_noflag(msg, id);
6536 if (!attr)
6537 return false;
6538
6539 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6540 if (!(mask & BIT(i)))
6541 continue;
6542
6543 if (nla_put_u8(msg, i, signal[i]))
6544 return false;
6545 }
6546
6547 nla_nest_end(msg, attr);
6548
6549 return true;
6550 }
6551
nl80211_send_station(struct sk_buff * msg,u32 cmd,u32 portid,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo)6552 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6553 u32 seq, int flags,
6554 struct cfg80211_registered_device *rdev,
6555 struct net_device *dev,
6556 const u8 *mac_addr, struct station_info *sinfo)
6557 {
6558 void *hdr;
6559 struct nlattr *sinfoattr, *bss_param;
6560
6561 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6562 if (!hdr) {
6563 cfg80211_sinfo_release_content(sinfo);
6564 return -1;
6565 }
6566
6567 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6568 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6569 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6570 goto nla_put_failure;
6571
6572 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6573 if (!sinfoattr)
6574 goto nla_put_failure;
6575
6576 #define PUT_SINFO(attr, memb, type) do { \
6577 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
6578 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
6579 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
6580 sinfo->memb)) \
6581 goto nla_put_failure; \
6582 } while (0)
6583 #define PUT_SINFO_U64(attr, memb) do { \
6584 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
6585 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
6586 sinfo->memb, NL80211_STA_INFO_PAD)) \
6587 goto nla_put_failure; \
6588 } while (0)
6589
6590 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6591 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6592 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6593
6594 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6595 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6596 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6597 (u32)sinfo->rx_bytes))
6598 goto nla_put_failure;
6599
6600 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6601 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6602 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6603 (u32)sinfo->tx_bytes))
6604 goto nla_put_failure;
6605
6606 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6607 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6608 PUT_SINFO(LLID, llid, u16);
6609 PUT_SINFO(PLID, plid, u16);
6610 PUT_SINFO(PLINK_STATE, plink_state, u8);
6611 PUT_SINFO_U64(RX_DURATION, rx_duration);
6612 PUT_SINFO_U64(TX_DURATION, tx_duration);
6613
6614 if (wiphy_ext_feature_isset(&rdev->wiphy,
6615 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6616 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6617
6618 switch (rdev->wiphy.signal_type) {
6619 case CFG80211_SIGNAL_TYPE_MBM:
6620 PUT_SINFO(SIGNAL, signal, u8);
6621 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6622 break;
6623 default:
6624 break;
6625 }
6626 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6627 if (!nl80211_put_signal(msg, sinfo->chains,
6628 sinfo->chain_signal,
6629 NL80211_STA_INFO_CHAIN_SIGNAL))
6630 goto nla_put_failure;
6631 }
6632 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6633 if (!nl80211_put_signal(msg, sinfo->chains,
6634 sinfo->chain_signal_avg,
6635 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6636 goto nla_put_failure;
6637 }
6638 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6639 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6640 NL80211_STA_INFO_TX_BITRATE))
6641 goto nla_put_failure;
6642 }
6643 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6644 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6645 NL80211_STA_INFO_RX_BITRATE))
6646 goto nla_put_failure;
6647 }
6648
6649 PUT_SINFO(RX_PACKETS, rx_packets, u32);
6650 PUT_SINFO(TX_PACKETS, tx_packets, u32);
6651 PUT_SINFO(TX_RETRIES, tx_retries, u32);
6652 PUT_SINFO(TX_FAILED, tx_failed, u32);
6653 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6654 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6655 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6656 PUT_SINFO(LOCAL_PM, local_pm, u32);
6657 PUT_SINFO(PEER_PM, peer_pm, u32);
6658 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6659 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6660 PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6661
6662 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6663 bss_param = nla_nest_start_noflag(msg,
6664 NL80211_STA_INFO_BSS_PARAM);
6665 if (!bss_param)
6666 goto nla_put_failure;
6667
6668 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6669 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6670 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6671 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6672 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6673 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6674 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6675 sinfo->bss_param.dtim_period) ||
6676 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6677 sinfo->bss_param.beacon_interval))
6678 goto nla_put_failure;
6679
6680 nla_nest_end(msg, bss_param);
6681 }
6682 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6683 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6684 sizeof(struct nl80211_sta_flag_update),
6685 &sinfo->sta_flags))
6686 goto nla_put_failure;
6687
6688 PUT_SINFO_U64(T_OFFSET, t_offset);
6689 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6690 PUT_SINFO_U64(BEACON_RX, rx_beacon);
6691 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6692 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6693 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6694 if (wiphy_ext_feature_isset(&rdev->wiphy,
6695 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6696 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6697 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6698 }
6699
6700 #undef PUT_SINFO
6701 #undef PUT_SINFO_U64
6702
6703 if (sinfo->pertid) {
6704 struct nlattr *tidsattr;
6705 int tid;
6706
6707 tidsattr = nla_nest_start_noflag(msg,
6708 NL80211_STA_INFO_TID_STATS);
6709 if (!tidsattr)
6710 goto nla_put_failure;
6711
6712 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6713 struct cfg80211_tid_stats *tidstats;
6714 struct nlattr *tidattr;
6715
6716 tidstats = &sinfo->pertid[tid];
6717
6718 if (!tidstats->filled)
6719 continue;
6720
6721 tidattr = nla_nest_start_noflag(msg, tid + 1);
6722 if (!tidattr)
6723 goto nla_put_failure;
6724
6725 #define PUT_TIDVAL_U64(attr, memb) do { \
6726 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
6727 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
6728 tidstats->memb, NL80211_TID_STATS_PAD)) \
6729 goto nla_put_failure; \
6730 } while (0)
6731
6732 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6733 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6734 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6735 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6736
6737 #undef PUT_TIDVAL_U64
6738 if ((tidstats->filled &
6739 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6740 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6741 NL80211_TID_STATS_TXQ_STATS))
6742 goto nla_put_failure;
6743
6744 nla_nest_end(msg, tidattr);
6745 }
6746
6747 nla_nest_end(msg, tidsattr);
6748 }
6749
6750 nla_nest_end(msg, sinfoattr);
6751
6752 if (sinfo->assoc_req_ies_len &&
6753 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6754 sinfo->assoc_req_ies))
6755 goto nla_put_failure;
6756
6757 if (sinfo->assoc_resp_ies_len &&
6758 nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len,
6759 sinfo->assoc_resp_ies))
6760 goto nla_put_failure;
6761
6762 if (sinfo->mlo_params_valid) {
6763 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
6764 sinfo->assoc_link_id))
6765 goto nla_put_failure;
6766
6767 if (!is_zero_ether_addr(sinfo->mld_addr) &&
6768 nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
6769 sinfo->mld_addr))
6770 goto nla_put_failure;
6771 }
6772
6773 cfg80211_sinfo_release_content(sinfo);
6774 genlmsg_end(msg, hdr);
6775 return 0;
6776
6777 nla_put_failure:
6778 cfg80211_sinfo_release_content(sinfo);
6779 genlmsg_cancel(msg, hdr);
6780 return -EMSGSIZE;
6781 }
6782
nl80211_dump_station(struct sk_buff * skb,struct netlink_callback * cb)6783 static int nl80211_dump_station(struct sk_buff *skb,
6784 struct netlink_callback *cb)
6785 {
6786 struct station_info sinfo;
6787 struct cfg80211_registered_device *rdev;
6788 struct wireless_dev *wdev;
6789 u8 mac_addr[ETH_ALEN];
6790 int sta_idx = cb->args[2];
6791 int err;
6792
6793 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6794 if (err)
6795 return err;
6796 /* nl80211_prepare_wdev_dump acquired it in the successful case */
6797 __acquire(&rdev->wiphy.mtx);
6798
6799 if (!wdev->netdev) {
6800 err = -EINVAL;
6801 goto out_err;
6802 }
6803
6804 if (!rdev->ops->dump_station) {
6805 err = -EOPNOTSUPP;
6806 goto out_err;
6807 }
6808
6809 while (1) {
6810 memset(&sinfo, 0, sizeof(sinfo));
6811 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6812 mac_addr, &sinfo);
6813 if (err == -ENOENT)
6814 break;
6815 if (err)
6816 goto out_err;
6817
6818 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6819 NETLINK_CB(cb->skb).portid,
6820 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6821 rdev, wdev->netdev, mac_addr,
6822 &sinfo) < 0)
6823 goto out;
6824
6825 sta_idx++;
6826 }
6827
6828 out:
6829 cb->args[2] = sta_idx;
6830 err = skb->len;
6831 out_err:
6832 wiphy_unlock(&rdev->wiphy);
6833
6834 return err;
6835 }
6836
nl80211_get_station(struct sk_buff * skb,struct genl_info * info)6837 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6838 {
6839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6840 struct net_device *dev = info->user_ptr[1];
6841 struct station_info sinfo;
6842 struct sk_buff *msg;
6843 u8 *mac_addr = NULL;
6844 int err;
6845
6846 memset(&sinfo, 0, sizeof(sinfo));
6847
6848 if (!info->attrs[NL80211_ATTR_MAC])
6849 return -EINVAL;
6850
6851 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6852
6853 if (!rdev->ops->get_station)
6854 return -EOPNOTSUPP;
6855
6856 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6857 if (err)
6858 return err;
6859
6860 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6861 if (!msg) {
6862 cfg80211_sinfo_release_content(&sinfo);
6863 return -ENOMEM;
6864 }
6865
6866 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6867 info->snd_portid, info->snd_seq, 0,
6868 rdev, dev, mac_addr, &sinfo) < 0) {
6869 nlmsg_free(msg);
6870 return -ENOBUFS;
6871 }
6872
6873 return genlmsg_reply(msg, info);
6874 }
6875
cfg80211_check_station_change(struct wiphy * wiphy,struct station_parameters * params,enum cfg80211_station_type statype)6876 int cfg80211_check_station_change(struct wiphy *wiphy,
6877 struct station_parameters *params,
6878 enum cfg80211_station_type statype)
6879 {
6880 if (params->listen_interval != -1 &&
6881 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6882 return -EINVAL;
6883
6884 if (params->support_p2p_ps != -1 &&
6885 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6886 return -EINVAL;
6887
6888 if (params->aid &&
6889 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6890 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6891 return -EINVAL;
6892
6893 /* When you run into this, adjust the code below for the new flag */
6894 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6895
6896 switch (statype) {
6897 case CFG80211_STA_MESH_PEER_KERNEL:
6898 case CFG80211_STA_MESH_PEER_USER:
6899 /*
6900 * No ignoring the TDLS flag here -- the userspace mesh
6901 * code doesn't have the bug of including TDLS in the
6902 * mask everywhere.
6903 */
6904 if (params->sta_flags_mask &
6905 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6906 BIT(NL80211_STA_FLAG_MFP) |
6907 BIT(NL80211_STA_FLAG_AUTHORIZED)))
6908 return -EINVAL;
6909 break;
6910 case CFG80211_STA_TDLS_PEER_SETUP:
6911 case CFG80211_STA_TDLS_PEER_ACTIVE:
6912 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6913 return -EINVAL;
6914 /* ignore since it can't change */
6915 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6916 break;
6917 default:
6918 /* disallow mesh-specific things */
6919 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6920 return -EINVAL;
6921 if (params->local_pm)
6922 return -EINVAL;
6923 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6924 return -EINVAL;
6925 }
6926
6927 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6928 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6929 /* TDLS can't be set, ... */
6930 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6931 return -EINVAL;
6932 /*
6933 * ... but don't bother the driver with it. This works around
6934 * a hostapd/wpa_supplicant issue -- it always includes the
6935 * TLDS_PEER flag in the mask even for AP mode.
6936 */
6937 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6938 }
6939
6940 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6941 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6942 /* reject other things that can't change */
6943 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6944 return -EINVAL;
6945 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6946 return -EINVAL;
6947 if (params->link_sta_params.supported_rates)
6948 return -EINVAL;
6949 if (params->ext_capab || params->link_sta_params.ht_capa ||
6950 params->link_sta_params.vht_capa ||
6951 params->link_sta_params.he_capa ||
6952 params->link_sta_params.eht_capa)
6953 return -EINVAL;
6954 }
6955
6956 if (statype != CFG80211_STA_AP_CLIENT &&
6957 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6958 if (params->vlan)
6959 return -EINVAL;
6960 }
6961
6962 switch (statype) {
6963 case CFG80211_STA_AP_MLME_CLIENT:
6964 /* Use this only for authorizing/unauthorizing a station */
6965 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6966 return -EOPNOTSUPP;
6967 break;
6968 case CFG80211_STA_AP_CLIENT:
6969 case CFG80211_STA_AP_CLIENT_UNASSOC:
6970 /* accept only the listed bits */
6971 if (params->sta_flags_mask &
6972 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6973 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6974 BIT(NL80211_STA_FLAG_ASSOCIATED) |
6975 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6976 BIT(NL80211_STA_FLAG_WME) |
6977 BIT(NL80211_STA_FLAG_MFP)))
6978 return -EINVAL;
6979
6980 /* but authenticated/associated only if driver handles it */
6981 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6982 params->sta_flags_mask &
6983 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6984 BIT(NL80211_STA_FLAG_ASSOCIATED)))
6985 return -EINVAL;
6986 break;
6987 case CFG80211_STA_IBSS:
6988 case CFG80211_STA_AP_STA:
6989 /* reject any changes other than AUTHORIZED */
6990 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6991 return -EINVAL;
6992 break;
6993 case CFG80211_STA_TDLS_PEER_SETUP:
6994 /* reject any changes other than AUTHORIZED or WME */
6995 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6996 BIT(NL80211_STA_FLAG_WME)))
6997 return -EINVAL;
6998 /* force (at least) rates when authorizing */
6999 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
7000 !params->link_sta_params.supported_rates)
7001 return -EINVAL;
7002 break;
7003 case CFG80211_STA_TDLS_PEER_ACTIVE:
7004 /* reject any changes */
7005 return -EINVAL;
7006 case CFG80211_STA_MESH_PEER_KERNEL:
7007 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
7008 return -EINVAL;
7009 break;
7010 case CFG80211_STA_MESH_PEER_USER:
7011 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
7012 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
7013 return -EINVAL;
7014 break;
7015 }
7016
7017 /*
7018 * Older kernel versions ignored this attribute entirely, so don't
7019 * reject attempts to update it but mark it as unused instead so the
7020 * driver won't look at the data.
7021 */
7022 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
7023 statype != CFG80211_STA_TDLS_PEER_SETUP)
7024 params->link_sta_params.opmode_notif_used = false;
7025
7026 return 0;
7027 }
7028 EXPORT_SYMBOL(cfg80211_check_station_change);
7029
7030 /*
7031 * Get vlan interface making sure it is running and on the right wiphy.
7032 */
get_vlan(struct genl_info * info,struct cfg80211_registered_device * rdev)7033 static struct net_device *get_vlan(struct genl_info *info,
7034 struct cfg80211_registered_device *rdev)
7035 {
7036 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
7037 struct net_device *v;
7038 int ret;
7039
7040 if (!vlanattr)
7041 return NULL;
7042
7043 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
7044 if (!v)
7045 return ERR_PTR(-ENODEV);
7046
7047 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
7048 ret = -EINVAL;
7049 goto error;
7050 }
7051
7052 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
7053 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7054 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
7055 ret = -EINVAL;
7056 goto error;
7057 }
7058
7059 if (!netif_running(v)) {
7060 ret = -ENETDOWN;
7061 goto error;
7062 }
7063
7064 return v;
7065 error:
7066 dev_put(v);
7067 return ERR_PTR(ret);
7068 }
7069
nl80211_parse_sta_wme(struct genl_info * info,struct station_parameters * params)7070 static int nl80211_parse_sta_wme(struct genl_info *info,
7071 struct station_parameters *params)
7072 {
7073 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
7074 struct nlattr *nla;
7075 int err;
7076
7077 /* parse WME attributes if present */
7078 if (!info->attrs[NL80211_ATTR_STA_WME])
7079 return 0;
7080
7081 nla = info->attrs[NL80211_ATTR_STA_WME];
7082 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
7083 nl80211_sta_wme_policy,
7084 info->extack);
7085 if (err)
7086 return err;
7087
7088 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
7089 params->uapsd_queues = nla_get_u8(
7090 tb[NL80211_STA_WME_UAPSD_QUEUES]);
7091 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
7092 return -EINVAL;
7093
7094 if (tb[NL80211_STA_WME_MAX_SP])
7095 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
7096
7097 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
7098 return -EINVAL;
7099
7100 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
7101
7102 return 0;
7103 }
7104
nl80211_parse_sta_channel_info(struct genl_info * info,struct station_parameters * params)7105 static int nl80211_parse_sta_channel_info(struct genl_info *info,
7106 struct station_parameters *params)
7107 {
7108 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
7109 params->supported_channels =
7110 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7111 params->supported_channels_len =
7112 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7113 /*
7114 * Need to include at least one (first channel, number of
7115 * channels) tuple for each subband (checked in policy),
7116 * and must have proper tuples for the rest of the data as well.
7117 */
7118 if (params->supported_channels_len % 2)
7119 return -EINVAL;
7120 }
7121
7122 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
7123 params->supported_oper_classes =
7124 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7125 params->supported_oper_classes_len =
7126 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7127 }
7128 return 0;
7129 }
7130
nl80211_set_station_tdls(struct genl_info * info,struct station_parameters * params)7131 static int nl80211_set_station_tdls(struct genl_info *info,
7132 struct station_parameters *params)
7133 {
7134 int err;
7135 /* Dummy STA entry gets updated once the peer capabilities are known */
7136 if (info->attrs[NL80211_ATTR_PEER_AID])
7137 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7138 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7139 params->link_sta_params.ht_capa =
7140 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7141 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7142 params->link_sta_params.vht_capa =
7143 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7144 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7145 params->link_sta_params.he_capa =
7146 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7147 params->link_sta_params.he_capa_len =
7148 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7149
7150 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7151 params->link_sta_params.eht_capa =
7152 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7153 params->link_sta_params.eht_capa_len =
7154 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7155
7156 if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
7157 (const u8 *)params->link_sta_params.eht_capa,
7158 params->link_sta_params.eht_capa_len,
7159 false))
7160 return -EINVAL;
7161 }
7162 }
7163
7164 err = nl80211_parse_sta_channel_info(info, params);
7165 if (err)
7166 return err;
7167
7168 return nl80211_parse_sta_wme(info, params);
7169 }
7170
nl80211_parse_sta_txpower_setting(struct genl_info * info,struct sta_txpwr * txpwr,bool * txpwr_set)7171 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
7172 struct sta_txpwr *txpwr,
7173 bool *txpwr_set)
7174 {
7175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7176 int idx;
7177
7178 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
7179 if (!rdev->ops->set_tx_power ||
7180 !wiphy_ext_feature_isset(&rdev->wiphy,
7181 NL80211_EXT_FEATURE_STA_TX_PWR))
7182 return -EOPNOTSUPP;
7183
7184 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
7185 txpwr->type = nla_get_u8(info->attrs[idx]);
7186
7187 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
7188 idx = NL80211_ATTR_STA_TX_POWER;
7189
7190 if (info->attrs[idx])
7191 txpwr->power = nla_get_s16(info->attrs[idx]);
7192 else
7193 return -EINVAL;
7194 }
7195
7196 *txpwr_set = true;
7197 } else {
7198 *txpwr_set = false;
7199 }
7200
7201 return 0;
7202 }
7203
nl80211_set_station(struct sk_buff * skb,struct genl_info * info)7204 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
7205 {
7206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7207 struct net_device *dev = info->user_ptr[1];
7208 struct station_parameters params;
7209 u8 *mac_addr;
7210 int err;
7211
7212 memset(¶ms, 0, sizeof(params));
7213
7214 if (!rdev->ops->change_station)
7215 return -EOPNOTSUPP;
7216
7217 /*
7218 * AID and listen_interval properties can be set only for unassociated
7219 * station. Include these parameters here and will check them in
7220 * cfg80211_check_station_change().
7221 */
7222 if (info->attrs[NL80211_ATTR_STA_AID])
7223 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7224
7225 if (info->attrs[NL80211_ATTR_VLAN_ID])
7226 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7227
7228 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7229 params.listen_interval =
7230 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7231 else
7232 params.listen_interval = -1;
7233
7234 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
7235 params.support_p2p_ps =
7236 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7237 else
7238 params.support_p2p_ps = -1;
7239
7240 if (!info->attrs[NL80211_ATTR_MAC])
7241 return -EINVAL;
7242
7243 params.link_sta_params.link_id =
7244 nl80211_link_id_or_invalid(info->attrs);
7245
7246 if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7247 /* If MLD_ADDR attribute is set then this is an MLD station
7248 * and the MLD_ADDR attribute holds the MLD address and the
7249 * MAC attribute holds for the LINK address.
7250 * In that case, the link_id is also expected to be valid.
7251 */
7252 if (params.link_sta_params.link_id < 0)
7253 return -EINVAL;
7254
7255 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7256 params.link_sta_params.mld_mac = mac_addr;
7257 params.link_sta_params.link_mac =
7258 nla_data(info->attrs[NL80211_ATTR_MAC]);
7259 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7260 return -EINVAL;
7261 } else {
7262 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7263 }
7264
7265
7266 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7267 params.link_sta_params.supported_rates =
7268 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7269 params.link_sta_params.supported_rates_len =
7270 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7271 }
7272
7273 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7274 params.capability =
7275 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7276 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7277 }
7278
7279 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7280 params.ext_capab =
7281 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7282 params.ext_capab_len =
7283 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7284 }
7285
7286 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
7287 return -EINVAL;
7288
7289 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7290 params.plink_action =
7291 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7292
7293 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7294 params.plink_state =
7295 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7296 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7297 params.peer_aid = nla_get_u16(
7298 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7299 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7300 }
7301
7302 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7303 params.local_pm = nla_get_u32(
7304 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7305
7306 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7307 params.link_sta_params.opmode_notif_used = true;
7308 params.link_sta_params.opmode_notif =
7309 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7310 }
7311
7312 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7313 params.link_sta_params.he_6ghz_capa =
7314 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7315
7316 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7317 params.airtime_weight =
7318 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7319
7320 if (params.airtime_weight &&
7321 !wiphy_ext_feature_isset(&rdev->wiphy,
7322 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7323 return -EOPNOTSUPP;
7324
7325 err = nl80211_parse_sta_txpower_setting(info,
7326 ¶ms.link_sta_params.txpwr,
7327 ¶ms.link_sta_params.txpwr_set);
7328 if (err)
7329 return err;
7330
7331 /* Include parameters for TDLS peer (will check later) */
7332 err = nl80211_set_station_tdls(info, ¶ms);
7333 if (err)
7334 return err;
7335
7336 params.vlan = get_vlan(info, rdev);
7337 if (IS_ERR(params.vlan))
7338 return PTR_ERR(params.vlan);
7339
7340 switch (dev->ieee80211_ptr->iftype) {
7341 case NL80211_IFTYPE_AP:
7342 case NL80211_IFTYPE_AP_VLAN:
7343 case NL80211_IFTYPE_P2P_GO:
7344 case NL80211_IFTYPE_P2P_CLIENT:
7345 case NL80211_IFTYPE_STATION:
7346 case NL80211_IFTYPE_ADHOC:
7347 case NL80211_IFTYPE_MESH_POINT:
7348 break;
7349 default:
7350 err = -EOPNOTSUPP;
7351 goto out_put_vlan;
7352 }
7353
7354 /* driver will call cfg80211_check_station_change() */
7355 wdev_lock(dev->ieee80211_ptr);
7356 err = rdev_change_station(rdev, dev, mac_addr, ¶ms);
7357 wdev_unlock(dev->ieee80211_ptr);
7358
7359 out_put_vlan:
7360 dev_put(params.vlan);
7361
7362 return err;
7363 }
7364
nl80211_new_station(struct sk_buff * skb,struct genl_info * info)7365 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7366 {
7367 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7368 int err;
7369 struct net_device *dev = info->user_ptr[1];
7370 struct wireless_dev *wdev = dev->ieee80211_ptr;
7371 struct station_parameters params;
7372 u8 *mac_addr = NULL;
7373 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7374 BIT(NL80211_STA_FLAG_ASSOCIATED);
7375
7376 memset(¶ms, 0, sizeof(params));
7377
7378 if (!rdev->ops->add_station)
7379 return -EOPNOTSUPP;
7380
7381 if (!info->attrs[NL80211_ATTR_MAC])
7382 return -EINVAL;
7383
7384 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7385 return -EINVAL;
7386
7387 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7388 return -EINVAL;
7389
7390 if (!info->attrs[NL80211_ATTR_STA_AID] &&
7391 !info->attrs[NL80211_ATTR_PEER_AID])
7392 return -EINVAL;
7393
7394 params.link_sta_params.link_id =
7395 nl80211_link_id_or_invalid(info->attrs);
7396
7397 if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7398 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7399 params.link_sta_params.mld_mac = mac_addr;
7400 params.link_sta_params.link_mac =
7401 nla_data(info->attrs[NL80211_ATTR_MAC]);
7402 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7403 return -EINVAL;
7404 } else {
7405 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7406 }
7407
7408 params.link_sta_params.supported_rates =
7409 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7410 params.link_sta_params.supported_rates_len =
7411 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7412 params.listen_interval =
7413 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7414
7415 if (info->attrs[NL80211_ATTR_VLAN_ID])
7416 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7417
7418 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7419 params.support_p2p_ps =
7420 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7421 } else {
7422 /*
7423 * if not specified, assume it's supported for P2P GO interface,
7424 * and is NOT supported for AP interface
7425 */
7426 params.support_p2p_ps =
7427 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7428 }
7429
7430 if (info->attrs[NL80211_ATTR_PEER_AID])
7431 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7432 else
7433 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7434
7435 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7436 params.capability =
7437 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7438 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7439 }
7440
7441 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7442 params.ext_capab =
7443 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7444 params.ext_capab_len =
7445 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7446 }
7447
7448 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7449 params.link_sta_params.ht_capa =
7450 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7451
7452 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7453 params.link_sta_params.vht_capa =
7454 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7455
7456 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7457 params.link_sta_params.he_capa =
7458 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7459 params.link_sta_params.he_capa_len =
7460 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7461
7462 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7463 params.link_sta_params.eht_capa =
7464 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7465 params.link_sta_params.eht_capa_len =
7466 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7467
7468 if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7469 (const u8 *)params.link_sta_params.eht_capa,
7470 params.link_sta_params.eht_capa_len,
7471 false))
7472 return -EINVAL;
7473 }
7474 }
7475
7476 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7477 params.link_sta_params.he_6ghz_capa =
7478 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7479
7480 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7481 params.link_sta_params.opmode_notif_used = true;
7482 params.link_sta_params.opmode_notif =
7483 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7484 }
7485
7486 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7487 params.plink_action =
7488 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7489
7490 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7491 params.airtime_weight =
7492 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7493
7494 if (params.airtime_weight &&
7495 !wiphy_ext_feature_isset(&rdev->wiphy,
7496 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7497 return -EOPNOTSUPP;
7498
7499 err = nl80211_parse_sta_txpower_setting(info,
7500 ¶ms.link_sta_params.txpwr,
7501 ¶ms.link_sta_params.txpwr_set);
7502 if (err)
7503 return err;
7504
7505 err = nl80211_parse_sta_channel_info(info, ¶ms);
7506 if (err)
7507 return err;
7508
7509 err = nl80211_parse_sta_wme(info, ¶ms);
7510 if (err)
7511 return err;
7512
7513 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
7514 return -EINVAL;
7515
7516 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7517 * as userspace might just pass through the capabilities from the IEs
7518 * directly, rather than enforcing this restriction and returning an
7519 * error in this case.
7520 */
7521 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7522 params.link_sta_params.ht_capa = NULL;
7523 params.link_sta_params.vht_capa = NULL;
7524
7525 /* HE and EHT require WME */
7526 if (params.link_sta_params.he_capa_len ||
7527 params.link_sta_params.he_6ghz_capa ||
7528 params.link_sta_params.eht_capa_len)
7529 return -EINVAL;
7530 }
7531
7532 /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7533 if (params.link_sta_params.he_6ghz_capa &&
7534 (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7535 return -EINVAL;
7536
7537 /* When you run into this, adjust the code below for the new flag */
7538 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7539
7540 switch (dev->ieee80211_ptr->iftype) {
7541 case NL80211_IFTYPE_AP:
7542 case NL80211_IFTYPE_AP_VLAN:
7543 case NL80211_IFTYPE_P2P_GO:
7544 /* ignore WME attributes if iface/sta is not capable */
7545 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7546 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7547 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7548
7549 /* TDLS peers cannot be added */
7550 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7551 info->attrs[NL80211_ATTR_PEER_AID])
7552 return -EINVAL;
7553 /* but don't bother the driver with it */
7554 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7555
7556 /* allow authenticated/associated only if driver handles it */
7557 if (!(rdev->wiphy.features &
7558 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7559 params.sta_flags_mask & auth_assoc)
7560 return -EINVAL;
7561
7562 /* Older userspace, or userspace wanting to be compatible with
7563 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7564 * and assoc flags in the mask, but assumes the station will be
7565 * added as associated anyway since this was the required driver
7566 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7567 * introduced.
7568 * In order to not bother drivers with this quirk in the API
7569 * set the flags in both the mask and set for new stations in
7570 * this case.
7571 */
7572 if (!(params.sta_flags_mask & auth_assoc)) {
7573 params.sta_flags_mask |= auth_assoc;
7574 params.sta_flags_set |= auth_assoc;
7575 }
7576
7577 /* must be last in here for error handling */
7578 params.vlan = get_vlan(info, rdev);
7579 if (IS_ERR(params.vlan))
7580 return PTR_ERR(params.vlan);
7581 break;
7582 case NL80211_IFTYPE_MESH_POINT:
7583 /* ignore uAPSD data */
7584 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7585
7586 /* associated is disallowed */
7587 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7588 return -EINVAL;
7589 /* TDLS peers cannot be added */
7590 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7591 info->attrs[NL80211_ATTR_PEER_AID])
7592 return -EINVAL;
7593 break;
7594 case NL80211_IFTYPE_STATION:
7595 case NL80211_IFTYPE_P2P_CLIENT:
7596 /* ignore uAPSD data */
7597 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7598
7599 /* these are disallowed */
7600 if (params.sta_flags_mask &
7601 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7602 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7603 return -EINVAL;
7604 /* Only TDLS peers can be added */
7605 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7606 return -EINVAL;
7607 /* Can only add if TDLS ... */
7608 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7609 return -EOPNOTSUPP;
7610 /* ... with external setup is supported */
7611 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7612 return -EOPNOTSUPP;
7613 /*
7614 * Older wpa_supplicant versions always mark the TDLS peer
7615 * as authorized, but it shouldn't yet be.
7616 */
7617 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7618 break;
7619 default:
7620 return -EOPNOTSUPP;
7621 }
7622
7623 /* be aware of params.vlan when changing code here */
7624
7625 wdev_lock(dev->ieee80211_ptr);
7626 if (wdev->valid_links) {
7627 if (params.link_sta_params.link_id < 0) {
7628 err = -EINVAL;
7629 goto out;
7630 }
7631 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7632 err = -ENOLINK;
7633 goto out;
7634 }
7635 } else {
7636 if (params.link_sta_params.link_id >= 0) {
7637 err = -EINVAL;
7638 goto out;
7639 }
7640 }
7641 err = rdev_add_station(rdev, dev, mac_addr, ¶ms);
7642 out:
7643 wdev_unlock(dev->ieee80211_ptr);
7644 dev_put(params.vlan);
7645 return err;
7646 }
7647
nl80211_del_station(struct sk_buff * skb,struct genl_info * info)7648 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7649 {
7650 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7651 struct net_device *dev = info->user_ptr[1];
7652 struct station_del_parameters params;
7653 int ret;
7654
7655 memset(¶ms, 0, sizeof(params));
7656
7657 if (info->attrs[NL80211_ATTR_MAC])
7658 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7659
7660 switch (dev->ieee80211_ptr->iftype) {
7661 case NL80211_IFTYPE_AP:
7662 case NL80211_IFTYPE_AP_VLAN:
7663 case NL80211_IFTYPE_MESH_POINT:
7664 case NL80211_IFTYPE_P2P_GO:
7665 /* always accept these */
7666 break;
7667 case NL80211_IFTYPE_ADHOC:
7668 /* conditionally accept */
7669 if (wiphy_ext_feature_isset(&rdev->wiphy,
7670 NL80211_EXT_FEATURE_DEL_IBSS_STA))
7671 break;
7672 return -EINVAL;
7673 default:
7674 return -EINVAL;
7675 }
7676
7677 if (!rdev->ops->del_station)
7678 return -EOPNOTSUPP;
7679
7680 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7681 params.subtype =
7682 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7683 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7684 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7685 return -EINVAL;
7686 } else {
7687 /* Default to Deauthentication frame */
7688 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7689 }
7690
7691 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7692 params.reason_code =
7693 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7694 if (params.reason_code == 0)
7695 return -EINVAL; /* 0 is reserved */
7696 } else {
7697 /* Default to reason code 2 */
7698 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7699 }
7700
7701 wdev_lock(dev->ieee80211_ptr);
7702 ret = rdev_del_station(rdev, dev, ¶ms);
7703 wdev_unlock(dev->ieee80211_ptr);
7704
7705 return ret;
7706 }
7707
nl80211_send_mpath(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct net_device * dev,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)7708 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7709 int flags, struct net_device *dev,
7710 u8 *dst, u8 *next_hop,
7711 struct mpath_info *pinfo)
7712 {
7713 void *hdr;
7714 struct nlattr *pinfoattr;
7715
7716 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7717 if (!hdr)
7718 return -1;
7719
7720 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7721 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7722 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7723 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7724 goto nla_put_failure;
7725
7726 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7727 if (!pinfoattr)
7728 goto nla_put_failure;
7729 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7730 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7731 pinfo->frame_qlen))
7732 goto nla_put_failure;
7733 if (((pinfo->filled & MPATH_INFO_SN) &&
7734 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7735 ((pinfo->filled & MPATH_INFO_METRIC) &&
7736 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7737 pinfo->metric)) ||
7738 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7739 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7740 pinfo->exptime)) ||
7741 ((pinfo->filled & MPATH_INFO_FLAGS) &&
7742 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7743 pinfo->flags)) ||
7744 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7745 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7746 pinfo->discovery_timeout)) ||
7747 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7748 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7749 pinfo->discovery_retries)) ||
7750 ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7751 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7752 pinfo->hop_count)) ||
7753 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7754 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7755 pinfo->path_change_count)))
7756 goto nla_put_failure;
7757
7758 nla_nest_end(msg, pinfoattr);
7759
7760 genlmsg_end(msg, hdr);
7761 return 0;
7762
7763 nla_put_failure:
7764 genlmsg_cancel(msg, hdr);
7765 return -EMSGSIZE;
7766 }
7767
nl80211_dump_mpath(struct sk_buff * skb,struct netlink_callback * cb)7768 static int nl80211_dump_mpath(struct sk_buff *skb,
7769 struct netlink_callback *cb)
7770 {
7771 struct mpath_info pinfo;
7772 struct cfg80211_registered_device *rdev;
7773 struct wireless_dev *wdev;
7774 u8 dst[ETH_ALEN];
7775 u8 next_hop[ETH_ALEN];
7776 int path_idx = cb->args[2];
7777 int err;
7778
7779 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7780 if (err)
7781 return err;
7782 /* nl80211_prepare_wdev_dump acquired it in the successful case */
7783 __acquire(&rdev->wiphy.mtx);
7784
7785 if (!rdev->ops->dump_mpath) {
7786 err = -EOPNOTSUPP;
7787 goto out_err;
7788 }
7789
7790 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7791 err = -EOPNOTSUPP;
7792 goto out_err;
7793 }
7794
7795 while (1) {
7796 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7797 next_hop, &pinfo);
7798 if (err == -ENOENT)
7799 break;
7800 if (err)
7801 goto out_err;
7802
7803 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7804 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7805 wdev->netdev, dst, next_hop,
7806 &pinfo) < 0)
7807 goto out;
7808
7809 path_idx++;
7810 }
7811
7812 out:
7813 cb->args[2] = path_idx;
7814 err = skb->len;
7815 out_err:
7816 wiphy_unlock(&rdev->wiphy);
7817 return err;
7818 }
7819
nl80211_get_mpath(struct sk_buff * skb,struct genl_info * info)7820 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7821 {
7822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7823 int err;
7824 struct net_device *dev = info->user_ptr[1];
7825 struct mpath_info pinfo;
7826 struct sk_buff *msg;
7827 u8 *dst = NULL;
7828 u8 next_hop[ETH_ALEN];
7829
7830 memset(&pinfo, 0, sizeof(pinfo));
7831
7832 if (!info->attrs[NL80211_ATTR_MAC])
7833 return -EINVAL;
7834
7835 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7836
7837 if (!rdev->ops->get_mpath)
7838 return -EOPNOTSUPP;
7839
7840 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7841 return -EOPNOTSUPP;
7842
7843 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7844 if (err)
7845 return err;
7846
7847 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7848 if (!msg)
7849 return -ENOMEM;
7850
7851 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7852 dev, dst, next_hop, &pinfo) < 0) {
7853 nlmsg_free(msg);
7854 return -ENOBUFS;
7855 }
7856
7857 return genlmsg_reply(msg, info);
7858 }
7859
nl80211_set_mpath(struct sk_buff * skb,struct genl_info * info)7860 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7861 {
7862 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7863 struct net_device *dev = info->user_ptr[1];
7864 u8 *dst = NULL;
7865 u8 *next_hop = NULL;
7866
7867 if (!info->attrs[NL80211_ATTR_MAC])
7868 return -EINVAL;
7869
7870 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7871 return -EINVAL;
7872
7873 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7874 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7875
7876 if (!rdev->ops->change_mpath)
7877 return -EOPNOTSUPP;
7878
7879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7880 return -EOPNOTSUPP;
7881
7882 return rdev_change_mpath(rdev, dev, dst, next_hop);
7883 }
7884
nl80211_new_mpath(struct sk_buff * skb,struct genl_info * info)7885 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7886 {
7887 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7888 struct net_device *dev = info->user_ptr[1];
7889 u8 *dst = NULL;
7890 u8 *next_hop = NULL;
7891
7892 if (!info->attrs[NL80211_ATTR_MAC])
7893 return -EINVAL;
7894
7895 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7896 return -EINVAL;
7897
7898 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7899 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7900
7901 if (!rdev->ops->add_mpath)
7902 return -EOPNOTSUPP;
7903
7904 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7905 return -EOPNOTSUPP;
7906
7907 return rdev_add_mpath(rdev, dev, dst, next_hop);
7908 }
7909
nl80211_del_mpath(struct sk_buff * skb,struct genl_info * info)7910 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7911 {
7912 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7913 struct net_device *dev = info->user_ptr[1];
7914 u8 *dst = NULL;
7915
7916 if (info->attrs[NL80211_ATTR_MAC])
7917 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7918
7919 if (!rdev->ops->del_mpath)
7920 return -EOPNOTSUPP;
7921
7922 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7923 return -EOPNOTSUPP;
7924
7925 return rdev_del_mpath(rdev, dev, dst);
7926 }
7927
nl80211_get_mpp(struct sk_buff * skb,struct genl_info * info)7928 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7929 {
7930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7931 int err;
7932 struct net_device *dev = info->user_ptr[1];
7933 struct mpath_info pinfo;
7934 struct sk_buff *msg;
7935 u8 *dst = NULL;
7936 u8 mpp[ETH_ALEN];
7937
7938 memset(&pinfo, 0, sizeof(pinfo));
7939
7940 if (!info->attrs[NL80211_ATTR_MAC])
7941 return -EINVAL;
7942
7943 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7944
7945 if (!rdev->ops->get_mpp)
7946 return -EOPNOTSUPP;
7947
7948 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7949 return -EOPNOTSUPP;
7950
7951 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7952 if (err)
7953 return err;
7954
7955 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7956 if (!msg)
7957 return -ENOMEM;
7958
7959 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7960 dev, dst, mpp, &pinfo) < 0) {
7961 nlmsg_free(msg);
7962 return -ENOBUFS;
7963 }
7964
7965 return genlmsg_reply(msg, info);
7966 }
7967
nl80211_dump_mpp(struct sk_buff * skb,struct netlink_callback * cb)7968 static int nl80211_dump_mpp(struct sk_buff *skb,
7969 struct netlink_callback *cb)
7970 {
7971 struct mpath_info pinfo;
7972 struct cfg80211_registered_device *rdev;
7973 struct wireless_dev *wdev;
7974 u8 dst[ETH_ALEN];
7975 u8 mpp[ETH_ALEN];
7976 int path_idx = cb->args[2];
7977 int err;
7978
7979 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7980 if (err)
7981 return err;
7982 /* nl80211_prepare_wdev_dump acquired it in the successful case */
7983 __acquire(&rdev->wiphy.mtx);
7984
7985 if (!rdev->ops->dump_mpp) {
7986 err = -EOPNOTSUPP;
7987 goto out_err;
7988 }
7989
7990 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7991 err = -EOPNOTSUPP;
7992 goto out_err;
7993 }
7994
7995 while (1) {
7996 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7997 mpp, &pinfo);
7998 if (err == -ENOENT)
7999 break;
8000 if (err)
8001 goto out_err;
8002
8003 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
8004 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8005 wdev->netdev, dst, mpp,
8006 &pinfo) < 0)
8007 goto out;
8008
8009 path_idx++;
8010 }
8011
8012 out:
8013 cb->args[2] = path_idx;
8014 err = skb->len;
8015 out_err:
8016 wiphy_unlock(&rdev->wiphy);
8017 return err;
8018 }
8019
nl80211_set_bss(struct sk_buff * skb,struct genl_info * info)8020 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
8021 {
8022 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8023 struct net_device *dev = info->user_ptr[1];
8024 struct wireless_dev *wdev = dev->ieee80211_ptr;
8025 struct bss_parameters params;
8026 int err;
8027
8028 memset(¶ms, 0, sizeof(params));
8029 params.link_id = nl80211_link_id_or_invalid(info->attrs);
8030 /* default to not changing parameters */
8031 params.use_cts_prot = -1;
8032 params.use_short_preamble = -1;
8033 params.use_short_slot_time = -1;
8034 params.ap_isolate = -1;
8035 params.ht_opmode = -1;
8036 params.p2p_ctwindow = -1;
8037 params.p2p_opp_ps = -1;
8038
8039 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
8040 params.use_cts_prot =
8041 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
8042 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
8043 params.use_short_preamble =
8044 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
8045 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
8046 params.use_short_slot_time =
8047 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
8048 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8049 params.basic_rates =
8050 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8051 params.basic_rates_len =
8052 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8053 }
8054 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
8055 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
8056 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
8057 params.ht_opmode =
8058 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
8059
8060 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
8061 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8062 return -EINVAL;
8063 params.p2p_ctwindow =
8064 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
8065 if (params.p2p_ctwindow != 0 &&
8066 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
8067 return -EINVAL;
8068 }
8069
8070 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
8071 u8 tmp;
8072
8073 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8074 return -EINVAL;
8075 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
8076 params.p2p_opp_ps = tmp;
8077 if (params.p2p_opp_ps &&
8078 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
8079 return -EINVAL;
8080 }
8081
8082 if (!rdev->ops->change_bss)
8083 return -EOPNOTSUPP;
8084
8085 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
8086 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8087 return -EOPNOTSUPP;
8088
8089 wdev_lock(wdev);
8090 err = rdev_change_bss(rdev, dev, ¶ms);
8091 wdev_unlock(wdev);
8092
8093 return err;
8094 }
8095
nl80211_req_set_reg(struct sk_buff * skb,struct genl_info * info)8096 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
8097 {
8098 char *data = NULL;
8099 bool is_indoor;
8100 enum nl80211_user_reg_hint_type user_reg_hint_type;
8101 u32 owner_nlportid;
8102
8103 /*
8104 * You should only get this when cfg80211 hasn't yet initialized
8105 * completely when built-in to the kernel right between the time
8106 * window between nl80211_init() and regulatory_init(), if that is
8107 * even possible.
8108 */
8109 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
8110 return -EINPROGRESS;
8111
8112 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
8113 user_reg_hint_type =
8114 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
8115 else
8116 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
8117
8118 switch (user_reg_hint_type) {
8119 case NL80211_USER_REG_HINT_USER:
8120 case NL80211_USER_REG_HINT_CELL_BASE:
8121 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8122 return -EINVAL;
8123
8124 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8125 return regulatory_hint_user(data, user_reg_hint_type);
8126 case NL80211_USER_REG_HINT_INDOOR:
8127 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8128 owner_nlportid = info->snd_portid;
8129 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
8130 } else {
8131 owner_nlportid = 0;
8132 is_indoor = true;
8133 }
8134
8135 return regulatory_hint_indoor(is_indoor, owner_nlportid);
8136 default:
8137 return -EINVAL;
8138 }
8139 }
8140
nl80211_reload_regdb(struct sk_buff * skb,struct genl_info * info)8141 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
8142 {
8143 return reg_reload_regdb();
8144 }
8145
nl80211_get_mesh_config(struct sk_buff * skb,struct genl_info * info)8146 static int nl80211_get_mesh_config(struct sk_buff *skb,
8147 struct genl_info *info)
8148 {
8149 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8150 struct net_device *dev = info->user_ptr[1];
8151 struct wireless_dev *wdev = dev->ieee80211_ptr;
8152 struct mesh_config cur_params;
8153 int err = 0;
8154 void *hdr;
8155 struct nlattr *pinfoattr;
8156 struct sk_buff *msg;
8157
8158 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8159 return -EOPNOTSUPP;
8160
8161 if (!rdev->ops->get_mesh_config)
8162 return -EOPNOTSUPP;
8163
8164 wdev_lock(wdev);
8165 /* If not connected, get default parameters */
8166 if (!wdev->u.mesh.id_len)
8167 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
8168 else
8169 err = rdev_get_mesh_config(rdev, dev, &cur_params);
8170 wdev_unlock(wdev);
8171
8172 if (err)
8173 return err;
8174
8175 /* Draw up a netlink message to send back */
8176 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8177 if (!msg)
8178 return -ENOMEM;
8179 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8180 NL80211_CMD_GET_MESH_CONFIG);
8181 if (!hdr)
8182 goto out;
8183 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
8184 if (!pinfoattr)
8185 goto nla_put_failure;
8186 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8187 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
8188 cur_params.dot11MeshRetryTimeout) ||
8189 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
8190 cur_params.dot11MeshConfirmTimeout) ||
8191 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
8192 cur_params.dot11MeshHoldingTimeout) ||
8193 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8194 cur_params.dot11MeshMaxPeerLinks) ||
8195 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
8196 cur_params.dot11MeshMaxRetries) ||
8197 nla_put_u8(msg, NL80211_MESHCONF_TTL,
8198 cur_params.dot11MeshTTL) ||
8199 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
8200 cur_params.element_ttl) ||
8201 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8202 cur_params.auto_open_plinks) ||
8203 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8204 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
8205 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8206 cur_params.dot11MeshHWMPmaxPREQretries) ||
8207 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
8208 cur_params.path_refresh_time) ||
8209 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8210 cur_params.min_discovery_timeout) ||
8211 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8212 cur_params.dot11MeshHWMPactivePathTimeout) ||
8213 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8214 cur_params.dot11MeshHWMPpreqMinInterval) ||
8215 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8216 cur_params.dot11MeshHWMPperrMinInterval) ||
8217 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8218 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
8219 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
8220 cur_params.dot11MeshHWMPRootMode) ||
8221 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8222 cur_params.dot11MeshHWMPRannInterval) ||
8223 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8224 cur_params.dot11MeshGateAnnouncementProtocol) ||
8225 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
8226 cur_params.dot11MeshForwarding) ||
8227 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
8228 cur_params.rssi_threshold) ||
8229 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
8230 cur_params.ht_opmode) ||
8231 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8232 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
8233 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8234 cur_params.dot11MeshHWMProotInterval) ||
8235 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8236 cur_params.dot11MeshHWMPconfirmationInterval) ||
8237 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
8238 cur_params.power_mode) ||
8239 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
8240 cur_params.dot11MeshAwakeWindowDuration) ||
8241 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8242 cur_params.plink_timeout) ||
8243 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8244 cur_params.dot11MeshConnectedToMeshGate) ||
8245 nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8246 cur_params.dot11MeshNolearn) ||
8247 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8248 cur_params.dot11MeshConnectedToAuthServer))
8249 goto nla_put_failure;
8250 nla_nest_end(msg, pinfoattr);
8251 genlmsg_end(msg, hdr);
8252 return genlmsg_reply(msg, info);
8253
8254 nla_put_failure:
8255 out:
8256 nlmsg_free(msg);
8257 return -ENOBUFS;
8258 }
8259
8260 static const struct nla_policy
8261 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8262 [NL80211_MESHCONF_RETRY_TIMEOUT] =
8263 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8264 [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8265 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8266 [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8267 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8268 [NL80211_MESHCONF_MAX_PEER_LINKS] =
8269 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8270 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8271 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8272 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8273 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8274 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8275 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8276 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8277 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8278 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8279 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8280 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8281 NLA_POLICY_MIN(NLA_U16, 1),
8282 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8283 NLA_POLICY_MIN(NLA_U16, 1),
8284 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8285 NLA_POLICY_MIN(NLA_U16, 1),
8286 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8287 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8288 NLA_POLICY_MIN(NLA_U16, 1),
8289 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8290 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8291 [NL80211_MESHCONF_RSSI_THRESHOLD] =
8292 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8293 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8294 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8295 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8296 NLA_POLICY_MIN(NLA_U16, 1),
8297 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8298 NLA_POLICY_MIN(NLA_U16, 1),
8299 [NL80211_MESHCONF_POWER_MODE] =
8300 NLA_POLICY_RANGE(NLA_U32,
8301 NL80211_MESH_POWER_ACTIVE,
8302 NL80211_MESH_POWER_MAX),
8303 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8304 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8305 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8306 [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8307 [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8308 };
8309
8310 static const struct nla_policy
8311 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8312 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8313 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8314 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8315 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8316 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8317 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8318 [NL80211_MESH_SETUP_IE] =
8319 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8320 IEEE80211_MAX_DATA_LEN),
8321 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8322 };
8323
nl80211_parse_mesh_config(struct genl_info * info,struct mesh_config * cfg,u32 * mask_out)8324 static int nl80211_parse_mesh_config(struct genl_info *info,
8325 struct mesh_config *cfg,
8326 u32 *mask_out)
8327 {
8328 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8329 u32 mask = 0;
8330 u16 ht_opmode;
8331
8332 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
8333 do { \
8334 if (tb[attr]) { \
8335 cfg->param = fn(tb[attr]); \
8336 mask |= BIT((attr) - 1); \
8337 } \
8338 } while (0)
8339
8340 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8341 return -EINVAL;
8342 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8343 return -EINVAL;
8344
8345 /* This makes sure that there aren't more than 32 mesh config
8346 * parameters (otherwise our bitfield scheme would not work.) */
8347 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8348
8349 /* Fill in the params struct */
8350 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8351 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8352 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8353 NL80211_MESHCONF_CONFIRM_TIMEOUT,
8354 nla_get_u16);
8355 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8356 NL80211_MESHCONF_HOLDING_TIMEOUT,
8357 nla_get_u16);
8358 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8359 NL80211_MESHCONF_MAX_PEER_LINKS,
8360 nla_get_u16);
8361 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8362 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8363 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8364 NL80211_MESHCONF_TTL, nla_get_u8);
8365 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8366 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8367 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8368 NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8369 nla_get_u8);
8370 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8371 mask,
8372 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8373 nla_get_u32);
8374 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8375 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8376 nla_get_u8);
8377 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8378 NL80211_MESHCONF_PATH_REFRESH_TIME,
8379 nla_get_u32);
8380 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8381 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8382 return -EINVAL;
8383 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8384 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8385 nla_get_u16);
8386 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8387 mask,
8388 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8389 nla_get_u32);
8390 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8391 (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8392 cfg->dot11MeshHWMPactivePathTimeout > 65535))
8393 return -EINVAL;
8394 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8395 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8396 nla_get_u16);
8397 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8398 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8399 nla_get_u16);
8400 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8401 dot11MeshHWMPnetDiameterTraversalTime, mask,
8402 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8403 nla_get_u16);
8404 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8405 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8406 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8407 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8408 nla_get_u16);
8409 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8410 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8411 nla_get_u8);
8412 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8413 NL80211_MESHCONF_FORWARDING, nla_get_u8);
8414 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8415 NL80211_MESHCONF_RSSI_THRESHOLD,
8416 nla_get_s32);
8417 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8418 NL80211_MESHCONF_CONNECTED_TO_GATE,
8419 nla_get_u8);
8420 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8421 NL80211_MESHCONF_CONNECTED_TO_AS,
8422 nla_get_u8);
8423 /*
8424 * Check HT operation mode based on
8425 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8426 */
8427 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8428 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8429
8430 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8431 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8432 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8433 return -EINVAL;
8434
8435 /* NON_HT_STA bit is reserved, but some programs set it */
8436 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8437
8438 cfg->ht_opmode = ht_opmode;
8439 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8440 }
8441 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8442 dot11MeshHWMPactivePathToRootTimeout, mask,
8443 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8444 nla_get_u32);
8445 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8446 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8447 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8448 return -EINVAL;
8449 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8450 NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8451 nla_get_u16);
8452 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8453 mask,
8454 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8455 nla_get_u16);
8456 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8457 NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8458 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8459 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8460 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8461 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8462 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8463 NL80211_MESHCONF_NOLEARN, nla_get_u8);
8464 if (mask_out)
8465 *mask_out = mask;
8466
8467 return 0;
8468
8469 #undef FILL_IN_MESH_PARAM_IF_SET
8470 }
8471
nl80211_parse_mesh_setup(struct genl_info * info,struct mesh_setup * setup)8472 static int nl80211_parse_mesh_setup(struct genl_info *info,
8473 struct mesh_setup *setup)
8474 {
8475 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8476 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8477
8478 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8479 return -EINVAL;
8480 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8481 return -EINVAL;
8482
8483 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8484 setup->sync_method =
8485 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8486 IEEE80211_SYNC_METHOD_VENDOR :
8487 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8488
8489 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8490 setup->path_sel_proto =
8491 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8492 IEEE80211_PATH_PROTOCOL_VENDOR :
8493 IEEE80211_PATH_PROTOCOL_HWMP;
8494
8495 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8496 setup->path_metric =
8497 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8498 IEEE80211_PATH_METRIC_VENDOR :
8499 IEEE80211_PATH_METRIC_AIRTIME;
8500
8501 if (tb[NL80211_MESH_SETUP_IE]) {
8502 struct nlattr *ieattr =
8503 tb[NL80211_MESH_SETUP_IE];
8504 setup->ie = nla_data(ieattr);
8505 setup->ie_len = nla_len(ieattr);
8506 }
8507 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8508 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8509 return -EINVAL;
8510 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8511 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8512 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8513 if (setup->is_secure)
8514 setup->user_mpm = true;
8515
8516 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8517 if (!setup->user_mpm)
8518 return -EINVAL;
8519 setup->auth_id =
8520 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8521 }
8522
8523 return 0;
8524 }
8525
nl80211_update_mesh_config(struct sk_buff * skb,struct genl_info * info)8526 static int nl80211_update_mesh_config(struct sk_buff *skb,
8527 struct genl_info *info)
8528 {
8529 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8530 struct net_device *dev = info->user_ptr[1];
8531 struct wireless_dev *wdev = dev->ieee80211_ptr;
8532 struct mesh_config cfg = {};
8533 u32 mask;
8534 int err;
8535
8536 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8537 return -EOPNOTSUPP;
8538
8539 if (!rdev->ops->update_mesh_config)
8540 return -EOPNOTSUPP;
8541
8542 err = nl80211_parse_mesh_config(info, &cfg, &mask);
8543 if (err)
8544 return err;
8545
8546 wdev_lock(wdev);
8547 if (!wdev->u.mesh.id_len)
8548 err = -ENOLINK;
8549
8550 if (!err)
8551 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8552
8553 wdev_unlock(wdev);
8554
8555 return err;
8556 }
8557
nl80211_put_regdom(const struct ieee80211_regdomain * regdom,struct sk_buff * msg)8558 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8559 struct sk_buff *msg)
8560 {
8561 struct nlattr *nl_reg_rules;
8562 unsigned int i;
8563
8564 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8565 (regdom->dfs_region &&
8566 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8567 goto nla_put_failure;
8568
8569 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8570 if (!nl_reg_rules)
8571 goto nla_put_failure;
8572
8573 for (i = 0; i < regdom->n_reg_rules; i++) {
8574 struct nlattr *nl_reg_rule;
8575 const struct ieee80211_reg_rule *reg_rule;
8576 const struct ieee80211_freq_range *freq_range;
8577 const struct ieee80211_power_rule *power_rule;
8578 unsigned int max_bandwidth_khz;
8579
8580 reg_rule = ®dom->reg_rules[i];
8581 freq_range = ®_rule->freq_range;
8582 power_rule = ®_rule->power_rule;
8583
8584 nl_reg_rule = nla_nest_start_noflag(msg, i);
8585 if (!nl_reg_rule)
8586 goto nla_put_failure;
8587
8588 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8589 if (!max_bandwidth_khz)
8590 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8591 reg_rule);
8592
8593 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8594 reg_rule->flags) ||
8595 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8596 freq_range->start_freq_khz) ||
8597 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8598 freq_range->end_freq_khz) ||
8599 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8600 max_bandwidth_khz) ||
8601 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8602 power_rule->max_antenna_gain) ||
8603 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8604 power_rule->max_eirp) ||
8605 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8606 reg_rule->dfs_cac_ms))
8607 goto nla_put_failure;
8608
8609 nla_nest_end(msg, nl_reg_rule);
8610 }
8611
8612 nla_nest_end(msg, nl_reg_rules);
8613 return 0;
8614
8615 nla_put_failure:
8616 return -EMSGSIZE;
8617 }
8618
nl80211_get_reg_do(struct sk_buff * skb,struct genl_info * info)8619 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8620 {
8621 const struct ieee80211_regdomain *regdom = NULL;
8622 struct cfg80211_registered_device *rdev;
8623 struct wiphy *wiphy = NULL;
8624 struct sk_buff *msg;
8625 int err = -EMSGSIZE;
8626 void *hdr;
8627
8628 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8629 if (!msg)
8630 return -ENOBUFS;
8631
8632 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8633 NL80211_CMD_GET_REG);
8634 if (!hdr)
8635 goto put_failure;
8636
8637 rtnl_lock();
8638
8639 if (info->attrs[NL80211_ATTR_WIPHY]) {
8640 bool self_managed;
8641
8642 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8643 if (IS_ERR(rdev)) {
8644 err = PTR_ERR(rdev);
8645 goto nla_put_failure;
8646 }
8647
8648 wiphy = &rdev->wiphy;
8649 self_managed = wiphy->regulatory_flags &
8650 REGULATORY_WIPHY_SELF_MANAGED;
8651
8652 rcu_read_lock();
8653
8654 regdom = get_wiphy_regdom(wiphy);
8655
8656 /* a self-managed-reg device must have a private regdom */
8657 if (WARN_ON(!regdom && self_managed)) {
8658 err = -EINVAL;
8659 goto nla_put_failure_rcu;
8660 }
8661
8662 if (regdom &&
8663 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8664 goto nla_put_failure_rcu;
8665 } else {
8666 rcu_read_lock();
8667 }
8668
8669 if (!wiphy && reg_last_request_cell_base() &&
8670 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8671 NL80211_USER_REG_HINT_CELL_BASE))
8672 goto nla_put_failure_rcu;
8673
8674 if (!regdom)
8675 regdom = rcu_dereference(cfg80211_regdomain);
8676
8677 if (nl80211_put_regdom(regdom, msg))
8678 goto nla_put_failure_rcu;
8679
8680 rcu_read_unlock();
8681
8682 genlmsg_end(msg, hdr);
8683 rtnl_unlock();
8684 return genlmsg_reply(msg, info);
8685
8686 nla_put_failure_rcu:
8687 rcu_read_unlock();
8688 nla_put_failure:
8689 rtnl_unlock();
8690 put_failure:
8691 nlmsg_free(msg);
8692 return err;
8693 }
8694
nl80211_send_regdom(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct wiphy * wiphy,const struct ieee80211_regdomain * regdom)8695 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8696 u32 seq, int flags, struct wiphy *wiphy,
8697 const struct ieee80211_regdomain *regdom)
8698 {
8699 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8700 NL80211_CMD_GET_REG);
8701
8702 if (!hdr)
8703 return -1;
8704
8705 genl_dump_check_consistent(cb, hdr);
8706
8707 if (nl80211_put_regdom(regdom, msg))
8708 goto nla_put_failure;
8709
8710 if (!wiphy && reg_last_request_cell_base() &&
8711 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8712 NL80211_USER_REG_HINT_CELL_BASE))
8713 goto nla_put_failure;
8714
8715 if (wiphy &&
8716 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8717 goto nla_put_failure;
8718
8719 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8720 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8721 goto nla_put_failure;
8722
8723 genlmsg_end(msg, hdr);
8724 return 0;
8725
8726 nla_put_failure:
8727 genlmsg_cancel(msg, hdr);
8728 return -EMSGSIZE;
8729 }
8730
nl80211_get_reg_dump(struct sk_buff * skb,struct netlink_callback * cb)8731 static int nl80211_get_reg_dump(struct sk_buff *skb,
8732 struct netlink_callback *cb)
8733 {
8734 const struct ieee80211_regdomain *regdom = NULL;
8735 struct cfg80211_registered_device *rdev;
8736 int err, reg_idx, start = cb->args[2];
8737
8738 rcu_read_lock();
8739
8740 if (cfg80211_regdomain && start == 0) {
8741 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8742 NLM_F_MULTI, NULL,
8743 rcu_dereference(cfg80211_regdomain));
8744 if (err < 0)
8745 goto out_err;
8746 }
8747
8748 /* the global regdom is idx 0 */
8749 reg_idx = 1;
8750 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8751 regdom = get_wiphy_regdom(&rdev->wiphy);
8752 if (!regdom)
8753 continue;
8754
8755 if (++reg_idx <= start)
8756 continue;
8757
8758 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8759 NLM_F_MULTI, &rdev->wiphy, regdom);
8760 if (err < 0) {
8761 reg_idx--;
8762 break;
8763 }
8764 }
8765
8766 cb->args[2] = reg_idx;
8767 err = skb->len;
8768 out_err:
8769 rcu_read_unlock();
8770 return err;
8771 }
8772
8773 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8774 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8775 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
8776 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
8777 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
8778 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
8779 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
8780 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
8781 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
8782 };
8783
parse_reg_rule(struct nlattr * tb[],struct ieee80211_reg_rule * reg_rule)8784 static int parse_reg_rule(struct nlattr *tb[],
8785 struct ieee80211_reg_rule *reg_rule)
8786 {
8787 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
8788 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
8789
8790 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8791 return -EINVAL;
8792 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8793 return -EINVAL;
8794 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8795 return -EINVAL;
8796 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8797 return -EINVAL;
8798 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8799 return -EINVAL;
8800
8801 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8802
8803 freq_range->start_freq_khz =
8804 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8805 freq_range->end_freq_khz =
8806 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8807 freq_range->max_bandwidth_khz =
8808 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8809
8810 power_rule->max_eirp =
8811 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8812
8813 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8814 power_rule->max_antenna_gain =
8815 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8816
8817 if (tb[NL80211_ATTR_DFS_CAC_TIME])
8818 reg_rule->dfs_cac_ms =
8819 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8820
8821 return 0;
8822 }
8823
nl80211_set_reg(struct sk_buff * skb,struct genl_info * info)8824 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8825 {
8826 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8827 struct nlattr *nl_reg_rule;
8828 char *alpha2;
8829 int rem_reg_rules, r;
8830 u32 num_rules = 0, rule_idx = 0;
8831 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8832 struct ieee80211_regdomain *rd;
8833
8834 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8835 return -EINVAL;
8836
8837 if (!info->attrs[NL80211_ATTR_REG_RULES])
8838 return -EINVAL;
8839
8840 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8841
8842 if (info->attrs[NL80211_ATTR_DFS_REGION])
8843 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8844
8845 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8846 rem_reg_rules) {
8847 num_rules++;
8848 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8849 return -EINVAL;
8850 }
8851
8852 rtnl_lock();
8853 if (!reg_is_valid_request(alpha2)) {
8854 r = -EINVAL;
8855 goto out;
8856 }
8857
8858 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8859 if (!rd) {
8860 r = -ENOMEM;
8861 goto out;
8862 }
8863
8864 rd->n_reg_rules = num_rules;
8865 rd->alpha2[0] = alpha2[0];
8866 rd->alpha2[1] = alpha2[1];
8867
8868 /*
8869 * Disable DFS master mode if the DFS region was
8870 * not supported or known on this kernel.
8871 */
8872 if (reg_supported_dfs_region(dfs_region))
8873 rd->dfs_region = dfs_region;
8874
8875 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8876 rem_reg_rules) {
8877 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8878 nl_reg_rule, reg_rule_policy,
8879 info->extack);
8880 if (r)
8881 goto bad_reg;
8882 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8883 if (r)
8884 goto bad_reg;
8885
8886 rule_idx++;
8887
8888 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8889 r = -EINVAL;
8890 goto bad_reg;
8891 }
8892 }
8893
8894 r = set_regdom(rd, REGD_SOURCE_CRDA);
8895 /* set_regdom takes ownership of rd */
8896 rd = NULL;
8897 bad_reg:
8898 kfree(rd);
8899 out:
8900 rtnl_unlock();
8901 return r;
8902 }
8903 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8904
validate_scan_freqs(struct nlattr * freqs)8905 static int validate_scan_freqs(struct nlattr *freqs)
8906 {
8907 struct nlattr *attr1, *attr2;
8908 int n_channels = 0, tmp1, tmp2;
8909
8910 nla_for_each_nested(attr1, freqs, tmp1)
8911 if (nla_len(attr1) != sizeof(u32))
8912 return 0;
8913
8914 nla_for_each_nested(attr1, freqs, tmp1) {
8915 n_channels++;
8916 /*
8917 * Some hardware has a limited channel list for
8918 * scanning, and it is pretty much nonsensical
8919 * to scan for a channel twice, so disallow that
8920 * and don't require drivers to check that the
8921 * channel list they get isn't longer than what
8922 * they can scan, as long as they can scan all
8923 * the channels they registered at once.
8924 */
8925 nla_for_each_nested(attr2, freqs, tmp2)
8926 if (attr1 != attr2 &&
8927 nla_get_u32(attr1) == nla_get_u32(attr2))
8928 return 0;
8929 }
8930
8931 return n_channels;
8932 }
8933
is_band_valid(struct wiphy * wiphy,enum nl80211_band b)8934 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8935 {
8936 return b < NUM_NL80211_BANDS && wiphy->bands[b];
8937 }
8938
parse_bss_select(struct nlattr * nla,struct wiphy * wiphy,struct cfg80211_bss_selection * bss_select)8939 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8940 struct cfg80211_bss_selection *bss_select)
8941 {
8942 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8943 struct nlattr *nest;
8944 int err;
8945 bool found = false;
8946 int i;
8947
8948 /* only process one nested attribute */
8949 nest = nla_data(nla);
8950 if (!nla_ok(nest, nla_len(nest)))
8951 return -EINVAL;
8952
8953 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8954 nest, nl80211_bss_select_policy,
8955 NULL);
8956 if (err)
8957 return err;
8958
8959 /* only one attribute may be given */
8960 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8961 if (attr[i]) {
8962 if (found)
8963 return -EINVAL;
8964 found = true;
8965 }
8966 }
8967
8968 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8969
8970 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8971 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8972
8973 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8974 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8975 bss_select->param.band_pref =
8976 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8977 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8978 return -EINVAL;
8979 }
8980
8981 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8982 struct nl80211_bss_select_rssi_adjust *adj_param;
8983
8984 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8985 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8986 bss_select->param.adjust.band = adj_param->band;
8987 bss_select->param.adjust.delta = adj_param->delta;
8988 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8989 return -EINVAL;
8990 }
8991
8992 /* user-space did not provide behaviour attribute */
8993 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8994 return -EINVAL;
8995
8996 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8997 return -EINVAL;
8998
8999 return 0;
9000 }
9001
nl80211_parse_random_mac(struct nlattr ** attrs,u8 * mac_addr,u8 * mac_addr_mask)9002 int nl80211_parse_random_mac(struct nlattr **attrs,
9003 u8 *mac_addr, u8 *mac_addr_mask)
9004 {
9005 int i;
9006
9007 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
9008 eth_zero_addr(mac_addr);
9009 eth_zero_addr(mac_addr_mask);
9010 mac_addr[0] = 0x2;
9011 mac_addr_mask[0] = 0x3;
9012
9013 return 0;
9014 }
9015
9016 /* need both or none */
9017 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
9018 return -EINVAL;
9019
9020 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
9021 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
9022
9023 /* don't allow or configure an mcast address */
9024 if (!is_multicast_ether_addr(mac_addr_mask) ||
9025 is_multicast_ether_addr(mac_addr))
9026 return -EINVAL;
9027
9028 /*
9029 * allow users to pass a MAC address that has bits set outside
9030 * of the mask, but don't bother drivers with having to deal
9031 * with such bits
9032 */
9033 for (i = 0; i < ETH_ALEN; i++)
9034 mac_addr[i] &= mac_addr_mask[i];
9035
9036 return 0;
9037 }
9038
cfg80211_off_channel_oper_allowed(struct wireless_dev * wdev,struct ieee80211_channel * chan)9039 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
9040 struct ieee80211_channel *chan)
9041 {
9042 unsigned int link_id;
9043 bool all_ok = true;
9044
9045 ASSERT_WDEV_LOCK(wdev);
9046
9047 if (!cfg80211_beaconing_iface_active(wdev))
9048 return true;
9049
9050 /*
9051 * FIXME: check if we have a free HW resource/link for chan
9052 *
9053 * This, as well as the FIXME below, requires knowing the link
9054 * capabilities of the hardware.
9055 */
9056
9057 /* we cannot leave radar channels */
9058 for_each_valid_link(wdev, link_id) {
9059 struct cfg80211_chan_def *chandef;
9060
9061 chandef = wdev_chandef(wdev, link_id);
9062 if (!chandef || !chandef->chan)
9063 continue;
9064
9065 /*
9066 * FIXME: don't require all_ok, but rather check only the
9067 * correct HW resource/link onto which 'chan' falls,
9068 * as only that link leaves the channel for doing
9069 * the off-channel operation.
9070 */
9071
9072 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
9073 all_ok = false;
9074 }
9075
9076 if (all_ok)
9077 return true;
9078
9079 return regulatory_pre_cac_allowed(wdev->wiphy);
9080 }
9081
nl80211_check_scan_feat(struct wiphy * wiphy,u32 flags,u32 flag,enum nl80211_ext_feature_index feat)9082 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
9083 enum nl80211_ext_feature_index feat)
9084 {
9085 if (!(flags & flag))
9086 return true;
9087 if (wiphy_ext_feature_isset(wiphy, feat))
9088 return true;
9089 return false;
9090 }
9091
9092 static int
nl80211_check_scan_flags(struct wiphy * wiphy,struct wireless_dev * wdev,void * request,struct nlattr ** attrs,bool is_sched_scan)9093 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
9094 void *request, struct nlattr **attrs,
9095 bool is_sched_scan)
9096 {
9097 u8 *mac_addr, *mac_addr_mask;
9098 u32 *flags;
9099 enum nl80211_feature_flags randomness_flag;
9100
9101 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
9102 return 0;
9103
9104 if (is_sched_scan) {
9105 struct cfg80211_sched_scan_request *req = request;
9106
9107 randomness_flag = wdev ?
9108 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
9109 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
9110 flags = &req->flags;
9111 mac_addr = req->mac_addr;
9112 mac_addr_mask = req->mac_addr_mask;
9113 } else {
9114 struct cfg80211_scan_request *req = request;
9115
9116 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
9117 flags = &req->flags;
9118 mac_addr = req->mac_addr;
9119 mac_addr_mask = req->mac_addr_mask;
9120 }
9121
9122 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
9123
9124 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
9125 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
9126 !nl80211_check_scan_feat(wiphy, *flags,
9127 NL80211_SCAN_FLAG_LOW_SPAN,
9128 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
9129 !nl80211_check_scan_feat(wiphy, *flags,
9130 NL80211_SCAN_FLAG_LOW_POWER,
9131 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
9132 !nl80211_check_scan_feat(wiphy, *flags,
9133 NL80211_SCAN_FLAG_HIGH_ACCURACY,
9134 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
9135 !nl80211_check_scan_feat(wiphy, *flags,
9136 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
9137 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
9138 !nl80211_check_scan_feat(wiphy, *flags,
9139 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
9140 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
9141 !nl80211_check_scan_feat(wiphy, *flags,
9142 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
9143 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
9144 !nl80211_check_scan_feat(wiphy, *flags,
9145 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
9146 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
9147 !nl80211_check_scan_feat(wiphy, *flags,
9148 NL80211_SCAN_FLAG_RANDOM_SN,
9149 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
9150 !nl80211_check_scan_feat(wiphy, *flags,
9151 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
9152 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
9153 return -EOPNOTSUPP;
9154
9155 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
9156 int err;
9157
9158 if (!(wiphy->features & randomness_flag) ||
9159 (wdev && wdev->connected))
9160 return -EOPNOTSUPP;
9161
9162 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
9163 if (err)
9164 return err;
9165 }
9166
9167 return 0;
9168 }
9169
nl80211_trigger_scan(struct sk_buff * skb,struct genl_info * info)9170 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
9171 {
9172 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9173 struct wireless_dev *wdev = info->user_ptr[1];
9174 struct cfg80211_scan_request *request;
9175 struct nlattr *scan_freqs = NULL;
9176 bool scan_freqs_khz = false;
9177 struct nlattr *attr;
9178 struct wiphy *wiphy;
9179 int err, tmp, n_ssids = 0, n_channels, i;
9180 size_t ie_len, size;
9181 size_t ssids_offset, ie_offset;
9182
9183 wiphy = &rdev->wiphy;
9184
9185 if (wdev->iftype == NL80211_IFTYPE_NAN)
9186 return -EOPNOTSUPP;
9187
9188 if (!rdev->ops->scan)
9189 return -EOPNOTSUPP;
9190
9191 if (rdev->scan_req || rdev->scan_msg)
9192 return -EBUSY;
9193
9194 if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
9195 if (!wiphy_ext_feature_isset(wiphy,
9196 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
9197 return -EOPNOTSUPP;
9198 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
9199 scan_freqs_khz = true;
9200 } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
9201 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
9202
9203 if (scan_freqs) {
9204 n_channels = validate_scan_freqs(scan_freqs);
9205 if (!n_channels)
9206 return -EINVAL;
9207 } else {
9208 n_channels = ieee80211_get_num_supported_channels(wiphy);
9209 }
9210
9211 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
9212 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
9213 n_ssids++;
9214
9215 if (n_ssids > wiphy->max_scan_ssids)
9216 return -EINVAL;
9217
9218 if (info->attrs[NL80211_ATTR_IE])
9219 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9220 else
9221 ie_len = 0;
9222
9223 if (ie_len > wiphy->max_scan_ie_len)
9224 return -EINVAL;
9225
9226 size = struct_size(request, channels, n_channels);
9227 ssids_offset = size;
9228 size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9229 ie_offset = size;
9230 size = size_add(size, ie_len);
9231 request = kzalloc(size, GFP_KERNEL);
9232 if (!request)
9233 return -ENOMEM;
9234 request->n_channels = n_channels;
9235
9236 if (n_ssids)
9237 request->ssids = (void *)request + ssids_offset;
9238 request->n_ssids = n_ssids;
9239 if (ie_len)
9240 request->ie = (void *)request + ie_offset;
9241
9242 i = 0;
9243 if (scan_freqs) {
9244 /* user specified, bail out if channel not found */
9245 nla_for_each_nested(attr, scan_freqs, tmp) {
9246 struct ieee80211_channel *chan;
9247 int freq = nla_get_u32(attr);
9248
9249 if (!scan_freqs_khz)
9250 freq = MHZ_TO_KHZ(freq);
9251
9252 chan = ieee80211_get_channel_khz(wiphy, freq);
9253 if (!chan) {
9254 err = -EINVAL;
9255 goto out_free;
9256 }
9257
9258 /* ignore disabled channels */
9259 if (chan->flags & IEEE80211_CHAN_DISABLED)
9260 continue;
9261
9262 request->channels[i] = chan;
9263 i++;
9264 }
9265 } else {
9266 enum nl80211_band band;
9267
9268 /* all channels */
9269 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9270 int j;
9271
9272 if (!wiphy->bands[band])
9273 continue;
9274 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9275 struct ieee80211_channel *chan;
9276
9277 chan = &wiphy->bands[band]->channels[j];
9278
9279 if (chan->flags & IEEE80211_CHAN_DISABLED)
9280 continue;
9281
9282 request->channels[i] = chan;
9283 i++;
9284 }
9285 }
9286 }
9287
9288 if (!i) {
9289 err = -EINVAL;
9290 goto out_free;
9291 }
9292
9293 request->n_channels = i;
9294
9295 wdev_lock(wdev);
9296 for (i = 0; i < request->n_channels; i++) {
9297 struct ieee80211_channel *chan = request->channels[i];
9298
9299 /* if we can go off-channel to the target channel we're good */
9300 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9301 continue;
9302
9303 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9304 wdev_unlock(wdev);
9305 err = -EBUSY;
9306 goto out_free;
9307 }
9308 }
9309 wdev_unlock(wdev);
9310
9311 i = 0;
9312 if (n_ssids) {
9313 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9314 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9315 err = -EINVAL;
9316 goto out_free;
9317 }
9318 request->ssids[i].ssid_len = nla_len(attr);
9319 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9320 i++;
9321 }
9322 }
9323
9324 if (info->attrs[NL80211_ATTR_IE]) {
9325 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9326 memcpy((void *)request->ie,
9327 nla_data(info->attrs[NL80211_ATTR_IE]),
9328 request->ie_len);
9329 }
9330
9331 for (i = 0; i < NUM_NL80211_BANDS; i++)
9332 if (wiphy->bands[i])
9333 request->rates[i] =
9334 (1 << wiphy->bands[i]->n_bitrates) - 1;
9335
9336 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9337 nla_for_each_nested(attr,
9338 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9339 tmp) {
9340 enum nl80211_band band = nla_type(attr);
9341
9342 if (band < 0 || band >= NUM_NL80211_BANDS) {
9343 err = -EINVAL;
9344 goto out_free;
9345 }
9346
9347 if (!wiphy->bands[band])
9348 continue;
9349
9350 err = ieee80211_get_ratemask(wiphy->bands[band],
9351 nla_data(attr),
9352 nla_len(attr),
9353 &request->rates[band]);
9354 if (err)
9355 goto out_free;
9356 }
9357 }
9358
9359 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9360 request->duration =
9361 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9362 request->duration_mandatory =
9363 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9364 }
9365
9366 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9367 false);
9368 if (err)
9369 goto out_free;
9370
9371 request->no_cck =
9372 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9373
9374 /* Initial implementation used NL80211_ATTR_MAC to set the specific
9375 * BSSID to scan for. This was problematic because that same attribute
9376 * was already used for another purpose (local random MAC address). The
9377 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9378 * compatibility with older userspace components, also use the
9379 * NL80211_ATTR_MAC value here if it can be determined to be used for
9380 * the specific BSSID use case instead of the random MAC address
9381 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9382 */
9383 if (info->attrs[NL80211_ATTR_BSSID])
9384 memcpy(request->bssid,
9385 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9386 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9387 info->attrs[NL80211_ATTR_MAC])
9388 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9389 ETH_ALEN);
9390 else
9391 eth_broadcast_addr(request->bssid);
9392
9393 request->wdev = wdev;
9394 request->wiphy = &rdev->wiphy;
9395 request->scan_start = jiffies;
9396
9397 rdev->scan_req = request;
9398 err = cfg80211_scan(rdev);
9399
9400 if (err)
9401 goto out_free;
9402
9403 nl80211_send_scan_start(rdev, wdev);
9404 dev_hold(wdev->netdev);
9405
9406 return 0;
9407
9408 out_free:
9409 rdev->scan_req = NULL;
9410 kfree(request);
9411
9412 return err;
9413 }
9414
nl80211_abort_scan(struct sk_buff * skb,struct genl_info * info)9415 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9416 {
9417 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9418 struct wireless_dev *wdev = info->user_ptr[1];
9419
9420 if (!rdev->ops->abort_scan)
9421 return -EOPNOTSUPP;
9422
9423 if (rdev->scan_msg)
9424 return 0;
9425
9426 if (!rdev->scan_req)
9427 return -ENOENT;
9428
9429 rdev_abort_scan(rdev, wdev);
9430 return 0;
9431 }
9432
9433 static int
nl80211_parse_sched_scan_plans(struct wiphy * wiphy,int n_plans,struct cfg80211_sched_scan_request * request,struct nlattr ** attrs)9434 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9435 struct cfg80211_sched_scan_request *request,
9436 struct nlattr **attrs)
9437 {
9438 int tmp, err, i = 0;
9439 struct nlattr *attr;
9440
9441 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9442 u32 interval;
9443
9444 /*
9445 * If scan plans are not specified,
9446 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9447 * case one scan plan will be set with the specified scan
9448 * interval and infinite number of iterations.
9449 */
9450 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9451 if (!interval)
9452 return -EINVAL;
9453
9454 request->scan_plans[0].interval =
9455 DIV_ROUND_UP(interval, MSEC_PER_SEC);
9456 if (!request->scan_plans[0].interval)
9457 return -EINVAL;
9458
9459 if (request->scan_plans[0].interval >
9460 wiphy->max_sched_scan_plan_interval)
9461 request->scan_plans[0].interval =
9462 wiphy->max_sched_scan_plan_interval;
9463
9464 return 0;
9465 }
9466
9467 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9468 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9469
9470 if (WARN_ON(i >= n_plans))
9471 return -EINVAL;
9472
9473 err = nla_parse_nested_deprecated(plan,
9474 NL80211_SCHED_SCAN_PLAN_MAX,
9475 attr, nl80211_plan_policy,
9476 NULL);
9477 if (err)
9478 return err;
9479
9480 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9481 return -EINVAL;
9482
9483 request->scan_plans[i].interval =
9484 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9485 if (!request->scan_plans[i].interval ||
9486 request->scan_plans[i].interval >
9487 wiphy->max_sched_scan_plan_interval)
9488 return -EINVAL;
9489
9490 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9491 request->scan_plans[i].iterations =
9492 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9493 if (!request->scan_plans[i].iterations ||
9494 (request->scan_plans[i].iterations >
9495 wiphy->max_sched_scan_plan_iterations))
9496 return -EINVAL;
9497 } else if (i < n_plans - 1) {
9498 /*
9499 * All scan plans but the last one must specify
9500 * a finite number of iterations
9501 */
9502 return -EINVAL;
9503 }
9504
9505 i++;
9506 }
9507
9508 /*
9509 * The last scan plan must not specify the number of
9510 * iterations, it is supposed to run infinitely
9511 */
9512 if (request->scan_plans[n_plans - 1].iterations)
9513 return -EINVAL;
9514
9515 return 0;
9516 }
9517
9518 static int
nl80211_parse_sched_scan_per_band_rssi(struct wiphy * wiphy,struct cfg80211_match_set * match_sets,struct nlattr * tb_band_rssi,s32 rssi_thold)9519 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9520 struct cfg80211_match_set *match_sets,
9521 struct nlattr *tb_band_rssi,
9522 s32 rssi_thold)
9523 {
9524 struct nlattr *attr;
9525 int i, tmp, ret = 0;
9526
9527 if (!wiphy_ext_feature_isset(wiphy,
9528 NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9529 if (tb_band_rssi)
9530 ret = -EOPNOTSUPP;
9531 else
9532 for (i = 0; i < NUM_NL80211_BANDS; i++)
9533 match_sets->per_band_rssi_thold[i] =
9534 NL80211_SCAN_RSSI_THOLD_OFF;
9535 return ret;
9536 }
9537
9538 for (i = 0; i < NUM_NL80211_BANDS; i++)
9539 match_sets->per_band_rssi_thold[i] = rssi_thold;
9540
9541 nla_for_each_nested(attr, tb_band_rssi, tmp) {
9542 enum nl80211_band band = nla_type(attr);
9543
9544 if (band < 0 || band >= NUM_NL80211_BANDS)
9545 return -EINVAL;
9546
9547 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9548 }
9549
9550 return 0;
9551 }
9552
9553 static struct cfg80211_sched_scan_request *
nl80211_parse_sched_scan(struct wiphy * wiphy,struct wireless_dev * wdev,struct nlattr ** attrs,int max_match_sets)9554 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9555 struct nlattr **attrs, int max_match_sets)
9556 {
9557 struct cfg80211_sched_scan_request *request;
9558 struct nlattr *attr;
9559 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9560 enum nl80211_band band;
9561 size_t ie_len, size;
9562 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9563 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9564
9565 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9566 n_channels = validate_scan_freqs(
9567 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9568 if (!n_channels)
9569 return ERR_PTR(-EINVAL);
9570 } else {
9571 n_channels = ieee80211_get_num_supported_channels(wiphy);
9572 }
9573
9574 if (attrs[NL80211_ATTR_SCAN_SSIDS])
9575 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9576 tmp)
9577 n_ssids++;
9578
9579 if (n_ssids > wiphy->max_sched_scan_ssids)
9580 return ERR_PTR(-EINVAL);
9581
9582 /*
9583 * First, count the number of 'real' matchsets. Due to an issue with
9584 * the old implementation, matchsets containing only the RSSI attribute
9585 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9586 * RSSI for all matchsets, rather than their own matchset for reporting
9587 * all APs with a strong RSSI. This is needed to be compatible with
9588 * older userspace that treated a matchset with only the RSSI as the
9589 * global RSSI for all other matchsets - if there are other matchsets.
9590 */
9591 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9592 nla_for_each_nested(attr,
9593 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9594 tmp) {
9595 struct nlattr *rssi;
9596
9597 err = nla_parse_nested_deprecated(tb,
9598 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9599 attr,
9600 nl80211_match_policy,
9601 NULL);
9602 if (err)
9603 return ERR_PTR(err);
9604
9605 /* SSID and BSSID are mutually exclusive */
9606 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9607 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9608 return ERR_PTR(-EINVAL);
9609
9610 /* add other standalone attributes here */
9611 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9612 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9613 n_match_sets++;
9614 continue;
9615 }
9616 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9617 if (rssi)
9618 default_match_rssi = nla_get_s32(rssi);
9619 }
9620 }
9621
9622 /* However, if there's no other matchset, add the RSSI one */
9623 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9624 n_match_sets = 1;
9625
9626 if (n_match_sets > max_match_sets)
9627 return ERR_PTR(-EINVAL);
9628
9629 if (attrs[NL80211_ATTR_IE])
9630 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9631 else
9632 ie_len = 0;
9633
9634 if (ie_len > wiphy->max_sched_scan_ie_len)
9635 return ERR_PTR(-EINVAL);
9636
9637 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9638 /*
9639 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9640 * each scan plan already specifies its own interval
9641 */
9642 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9643 return ERR_PTR(-EINVAL);
9644
9645 nla_for_each_nested(attr,
9646 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9647 n_plans++;
9648 } else {
9649 /*
9650 * The scan interval attribute is kept for backward
9651 * compatibility. If no scan plans are specified and sched scan
9652 * interval is specified, one scan plan will be set with this
9653 * scan interval and infinite number of iterations.
9654 */
9655 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9656 return ERR_PTR(-EINVAL);
9657
9658 n_plans = 1;
9659 }
9660
9661 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9662 return ERR_PTR(-EINVAL);
9663
9664 if (!wiphy_ext_feature_isset(
9665 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9666 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9667 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9668 return ERR_PTR(-EINVAL);
9669
9670 size = struct_size(request, channels, n_channels);
9671 size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9672 size = size_add(size, array_size(sizeof(*request->match_sets),
9673 n_match_sets));
9674 size = size_add(size, array_size(sizeof(*request->scan_plans),
9675 n_plans));
9676 size = size_add(size, ie_len);
9677 request = kzalloc(size, GFP_KERNEL);
9678 if (!request)
9679 return ERR_PTR(-ENOMEM);
9680
9681 if (n_ssids)
9682 request->ssids = (void *)request +
9683 struct_size(request, channels, n_channels);
9684 request->n_ssids = n_ssids;
9685 if (ie_len) {
9686 if (n_ssids)
9687 request->ie = (void *)(request->ssids + n_ssids);
9688 else
9689 request->ie = (void *)(request->channels + n_channels);
9690 }
9691
9692 if (n_match_sets) {
9693 if (request->ie)
9694 request->match_sets = (void *)(request->ie + ie_len);
9695 else if (n_ssids)
9696 request->match_sets =
9697 (void *)(request->ssids + n_ssids);
9698 else
9699 request->match_sets =
9700 (void *)(request->channels + n_channels);
9701 }
9702 request->n_match_sets = n_match_sets;
9703
9704 if (n_match_sets)
9705 request->scan_plans = (void *)(request->match_sets +
9706 n_match_sets);
9707 else if (request->ie)
9708 request->scan_plans = (void *)(request->ie + ie_len);
9709 else if (n_ssids)
9710 request->scan_plans = (void *)(request->ssids + n_ssids);
9711 else
9712 request->scan_plans = (void *)(request->channels + n_channels);
9713
9714 request->n_scan_plans = n_plans;
9715
9716 i = 0;
9717 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9718 /* user specified, bail out if channel not found */
9719 nla_for_each_nested(attr,
9720 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9721 tmp) {
9722 struct ieee80211_channel *chan;
9723
9724 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9725
9726 if (!chan) {
9727 err = -EINVAL;
9728 goto out_free;
9729 }
9730
9731 /* ignore disabled channels */
9732 if (chan->flags & IEEE80211_CHAN_DISABLED)
9733 continue;
9734
9735 request->channels[i] = chan;
9736 i++;
9737 }
9738 } else {
9739 /* all channels */
9740 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9741 int j;
9742
9743 if (!wiphy->bands[band])
9744 continue;
9745 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9746 struct ieee80211_channel *chan;
9747
9748 chan = &wiphy->bands[band]->channels[j];
9749
9750 if (chan->flags & IEEE80211_CHAN_DISABLED)
9751 continue;
9752
9753 request->channels[i] = chan;
9754 i++;
9755 }
9756 }
9757 }
9758
9759 if (!i) {
9760 err = -EINVAL;
9761 goto out_free;
9762 }
9763
9764 request->n_channels = i;
9765
9766 i = 0;
9767 if (n_ssids) {
9768 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9769 tmp) {
9770 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9771 err = -EINVAL;
9772 goto out_free;
9773 }
9774 request->ssids[i].ssid_len = nla_len(attr);
9775 memcpy(request->ssids[i].ssid, nla_data(attr),
9776 nla_len(attr));
9777 i++;
9778 }
9779 }
9780
9781 i = 0;
9782 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9783 nla_for_each_nested(attr,
9784 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9785 tmp) {
9786 struct nlattr *ssid, *bssid, *rssi;
9787
9788 err = nla_parse_nested_deprecated(tb,
9789 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9790 attr,
9791 nl80211_match_policy,
9792 NULL);
9793 if (err)
9794 goto out_free;
9795 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9796 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9797
9798 if (!ssid && !bssid) {
9799 i++;
9800 continue;
9801 }
9802
9803 if (WARN_ON(i >= n_match_sets)) {
9804 /* this indicates a programming error,
9805 * the loop above should have verified
9806 * things properly
9807 */
9808 err = -EINVAL;
9809 goto out_free;
9810 }
9811
9812 if (ssid) {
9813 memcpy(request->match_sets[i].ssid.ssid,
9814 nla_data(ssid), nla_len(ssid));
9815 request->match_sets[i].ssid.ssid_len =
9816 nla_len(ssid);
9817 }
9818 if (bssid)
9819 memcpy(request->match_sets[i].bssid,
9820 nla_data(bssid), ETH_ALEN);
9821
9822 /* special attribute - old implementation w/a */
9823 request->match_sets[i].rssi_thold = default_match_rssi;
9824 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9825 if (rssi)
9826 request->match_sets[i].rssi_thold =
9827 nla_get_s32(rssi);
9828
9829 /* Parse per band RSSI attribute */
9830 err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9831 &request->match_sets[i],
9832 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9833 request->match_sets[i].rssi_thold);
9834 if (err)
9835 goto out_free;
9836
9837 i++;
9838 }
9839
9840 /* there was no other matchset, so the RSSI one is alone */
9841 if (i == 0 && n_match_sets)
9842 request->match_sets[0].rssi_thold = default_match_rssi;
9843
9844 request->min_rssi_thold = INT_MAX;
9845 for (i = 0; i < n_match_sets; i++)
9846 request->min_rssi_thold =
9847 min(request->match_sets[i].rssi_thold,
9848 request->min_rssi_thold);
9849 } else {
9850 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9851 }
9852
9853 if (ie_len) {
9854 request->ie_len = ie_len;
9855 memcpy((void *)request->ie,
9856 nla_data(attrs[NL80211_ATTR_IE]),
9857 request->ie_len);
9858 }
9859
9860 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9861 if (err)
9862 goto out_free;
9863
9864 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9865 request->delay =
9866 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9867
9868 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9869 request->relative_rssi = nla_get_s8(
9870 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9871 request->relative_rssi_set = true;
9872 }
9873
9874 if (request->relative_rssi_set &&
9875 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9876 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9877
9878 rssi_adjust = nla_data(
9879 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9880 request->rssi_adjust.band = rssi_adjust->band;
9881 request->rssi_adjust.delta = rssi_adjust->delta;
9882 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9883 err = -EINVAL;
9884 goto out_free;
9885 }
9886 }
9887
9888 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9889 if (err)
9890 goto out_free;
9891
9892 request->scan_start = jiffies;
9893
9894 return request;
9895
9896 out_free:
9897 kfree(request);
9898 return ERR_PTR(err);
9899 }
9900
nl80211_start_sched_scan(struct sk_buff * skb,struct genl_info * info)9901 static int nl80211_start_sched_scan(struct sk_buff *skb,
9902 struct genl_info *info)
9903 {
9904 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9905 struct net_device *dev = info->user_ptr[1];
9906 struct wireless_dev *wdev = dev->ieee80211_ptr;
9907 struct cfg80211_sched_scan_request *sched_scan_req;
9908 bool want_multi;
9909 int err;
9910
9911 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9912 return -EOPNOTSUPP;
9913
9914 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9915 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9916 if (err)
9917 return err;
9918
9919 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9920 info->attrs,
9921 rdev->wiphy.max_match_sets);
9922
9923 err = PTR_ERR_OR_ZERO(sched_scan_req);
9924 if (err)
9925 goto out_err;
9926
9927 /* leave request id zero for legacy request
9928 * or if driver does not support multi-scheduled scan
9929 */
9930 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9931 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9932
9933 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9934 if (err)
9935 goto out_free;
9936
9937 sched_scan_req->dev = dev;
9938 sched_scan_req->wiphy = &rdev->wiphy;
9939
9940 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9941 sched_scan_req->owner_nlportid = info->snd_portid;
9942
9943 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9944
9945 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9946 return 0;
9947
9948 out_free:
9949 kfree(sched_scan_req);
9950 out_err:
9951 return err;
9952 }
9953
nl80211_stop_sched_scan(struct sk_buff * skb,struct genl_info * info)9954 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9955 struct genl_info *info)
9956 {
9957 struct cfg80211_sched_scan_request *req;
9958 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9959 u64 cookie;
9960
9961 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9962 return -EOPNOTSUPP;
9963
9964 if (info->attrs[NL80211_ATTR_COOKIE]) {
9965 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9966 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9967 }
9968
9969 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9970 struct cfg80211_sched_scan_request,
9971 list);
9972 if (!req || req->reqid ||
9973 (req->owner_nlportid &&
9974 req->owner_nlportid != info->snd_portid))
9975 return -ENOENT;
9976
9977 return cfg80211_stop_sched_scan_req(rdev, req, false);
9978 }
9979
nl80211_start_radar_detection(struct sk_buff * skb,struct genl_info * info)9980 static int nl80211_start_radar_detection(struct sk_buff *skb,
9981 struct genl_info *info)
9982 {
9983 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9984 struct net_device *dev = info->user_ptr[1];
9985 struct wireless_dev *wdev = dev->ieee80211_ptr;
9986 struct wiphy *wiphy = wdev->wiphy;
9987 struct cfg80211_chan_def chandef;
9988 enum nl80211_dfs_regions dfs_region;
9989 unsigned int cac_time_ms;
9990 int err = -EINVAL;
9991
9992 flush_delayed_work(&rdev->dfs_update_channels_wk);
9993
9994 wiphy_lock(wiphy);
9995
9996 dfs_region = reg_get_dfs_region(wiphy);
9997 if (dfs_region == NL80211_DFS_UNSET)
9998 goto unlock;
9999
10000 err = nl80211_parse_chandef(rdev, info, &chandef);
10001 if (err)
10002 goto unlock;
10003
10004 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10005 if (err < 0)
10006 goto unlock;
10007
10008 if (err == 0) {
10009 err = -EINVAL;
10010 goto unlock;
10011 }
10012
10013 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
10014 err = -EINVAL;
10015 goto unlock;
10016 }
10017
10018 if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
10019 err = cfg80211_start_background_radar_detection(rdev, wdev,
10020 &chandef);
10021 goto unlock;
10022 }
10023
10024 if (netif_carrier_ok(dev)) {
10025 err = -EBUSY;
10026 goto unlock;
10027 }
10028
10029 if (wdev->cac_started) {
10030 err = -EBUSY;
10031 goto unlock;
10032 }
10033
10034 /* CAC start is offloaded to HW and can't be started manually */
10035 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
10036 err = -EOPNOTSUPP;
10037 goto unlock;
10038 }
10039
10040 if (!rdev->ops->start_radar_detection) {
10041 err = -EOPNOTSUPP;
10042 goto unlock;
10043 }
10044
10045 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
10046 if (WARN_ON(!cac_time_ms))
10047 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
10048
10049 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
10050 if (!err) {
10051 switch (wdev->iftype) {
10052 case NL80211_IFTYPE_AP:
10053 case NL80211_IFTYPE_P2P_GO:
10054 wdev->links[0].ap.chandef = chandef;
10055 break;
10056 case NL80211_IFTYPE_ADHOC:
10057 wdev->u.ibss.chandef = chandef;
10058 break;
10059 case NL80211_IFTYPE_MESH_POINT:
10060 wdev->u.mesh.chandef = chandef;
10061 break;
10062 default:
10063 break;
10064 }
10065 wdev->cac_started = true;
10066 wdev->cac_start_time = jiffies;
10067 wdev->cac_time_ms = cac_time_ms;
10068 }
10069 unlock:
10070 wiphy_unlock(wiphy);
10071
10072 return err;
10073 }
10074
nl80211_notify_radar_detection(struct sk_buff * skb,struct genl_info * info)10075 static int nl80211_notify_radar_detection(struct sk_buff *skb,
10076 struct genl_info *info)
10077 {
10078 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10079 struct net_device *dev = info->user_ptr[1];
10080 struct wireless_dev *wdev = dev->ieee80211_ptr;
10081 struct wiphy *wiphy = wdev->wiphy;
10082 struct cfg80211_chan_def chandef;
10083 enum nl80211_dfs_regions dfs_region;
10084 int err;
10085
10086 dfs_region = reg_get_dfs_region(wiphy);
10087 if (dfs_region == NL80211_DFS_UNSET) {
10088 GENL_SET_ERR_MSG(info,
10089 "DFS Region is not set. Unexpected Radar indication");
10090 return -EINVAL;
10091 }
10092
10093 err = nl80211_parse_chandef(rdev, info, &chandef);
10094 if (err) {
10095 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
10096 return err;
10097 }
10098
10099 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10100 if (err < 0) {
10101 GENL_SET_ERR_MSG(info, "chandef is invalid");
10102 return err;
10103 }
10104
10105 if (err == 0) {
10106 GENL_SET_ERR_MSG(info,
10107 "Unexpected Radar indication for chandef/iftype");
10108 return -EINVAL;
10109 }
10110
10111 /* Do not process this notification if radar is already detected
10112 * by kernel on this channel, and return success.
10113 */
10114 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
10115 return 0;
10116
10117 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
10118
10119 cfg80211_sched_dfs_chan_update(rdev);
10120
10121 rdev->radar_chandef = chandef;
10122
10123 /* Propagate this notification to other radios as well */
10124 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
10125
10126 return 0;
10127 }
10128
nl80211_channel_switch(struct sk_buff * skb,struct genl_info * info)10129 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
10130 {
10131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10132 unsigned int link_id = nl80211_link_id(info->attrs);
10133 struct net_device *dev = info->user_ptr[1];
10134 struct wireless_dev *wdev = dev->ieee80211_ptr;
10135 struct cfg80211_csa_settings params;
10136 struct nlattr **csa_attrs = NULL;
10137 int err;
10138 bool need_new_beacon = false;
10139 bool need_handle_dfs_flag = true;
10140 int len, i;
10141 u32 cs_count;
10142
10143 if (!rdev->ops->channel_switch ||
10144 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
10145 return -EOPNOTSUPP;
10146
10147 switch (dev->ieee80211_ptr->iftype) {
10148 case NL80211_IFTYPE_AP:
10149 case NL80211_IFTYPE_P2P_GO:
10150 need_new_beacon = true;
10151 /* For all modes except AP the handle_dfs flag needs to be
10152 * supplied to tell the kernel that userspace will handle radar
10153 * events when they happen. Otherwise a switch to a channel
10154 * requiring DFS will be rejected.
10155 */
10156 need_handle_dfs_flag = false;
10157
10158 /* useless if AP is not running */
10159 if (!wdev->links[link_id].ap.beacon_interval)
10160 return -ENOTCONN;
10161 break;
10162 case NL80211_IFTYPE_ADHOC:
10163 if (!wdev->u.ibss.ssid_len)
10164 return -ENOTCONN;
10165 break;
10166 case NL80211_IFTYPE_MESH_POINT:
10167 if (!wdev->u.mesh.id_len)
10168 return -ENOTCONN;
10169 break;
10170 default:
10171 return -EOPNOTSUPP;
10172 }
10173
10174 memset(¶ms, 0, sizeof(params));
10175 params.beacon_csa.ftm_responder = -1;
10176
10177 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10178 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
10179 return -EINVAL;
10180
10181 /* only important for AP, IBSS and mesh create IEs internally */
10182 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
10183 return -EINVAL;
10184
10185 /* Even though the attribute is u32, the specification says
10186 * u8, so let's make sure we don't overflow.
10187 */
10188 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
10189 if (cs_count > 255)
10190 return -EINVAL;
10191
10192 params.count = cs_count;
10193
10194 if (!need_new_beacon)
10195 goto skip_beacons;
10196
10197 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after,
10198 info->extack);
10199 if (err)
10200 goto free;
10201
10202 csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
10203 GFP_KERNEL);
10204 if (!csa_attrs) {
10205 err = -ENOMEM;
10206 goto free;
10207 }
10208
10209 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
10210 info->attrs[NL80211_ATTR_CSA_IES],
10211 nl80211_policy, info->extack);
10212 if (err)
10213 goto free;
10214
10215 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa,
10216 info->extack);
10217 if (err)
10218 goto free;
10219
10220 if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
10221 err = -EINVAL;
10222 goto free;
10223 }
10224
10225 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10226 if (!len || (len % sizeof(u16))) {
10227 err = -EINVAL;
10228 goto free;
10229 }
10230
10231 params.n_counter_offsets_beacon = len / sizeof(u16);
10232 if (rdev->wiphy.max_num_csa_counters &&
10233 (params.n_counter_offsets_beacon >
10234 rdev->wiphy.max_num_csa_counters)) {
10235 err = -EINVAL;
10236 goto free;
10237 }
10238
10239 params.counter_offsets_beacon =
10240 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10241
10242 /* sanity checks - counters should fit and be the same */
10243 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
10244 u16 offset = params.counter_offsets_beacon[i];
10245
10246 if (offset >= params.beacon_csa.tail_len) {
10247 err = -EINVAL;
10248 goto free;
10249 }
10250
10251 if (params.beacon_csa.tail[offset] != params.count) {
10252 err = -EINVAL;
10253 goto free;
10254 }
10255 }
10256
10257 if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
10258 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10259 if (!len || (len % sizeof(u16))) {
10260 err = -EINVAL;
10261 goto free;
10262 }
10263
10264 params.n_counter_offsets_presp = len / sizeof(u16);
10265 if (rdev->wiphy.max_num_csa_counters &&
10266 (params.n_counter_offsets_presp >
10267 rdev->wiphy.max_num_csa_counters)) {
10268 err = -EINVAL;
10269 goto free;
10270 }
10271
10272 params.counter_offsets_presp =
10273 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10274
10275 /* sanity checks - counters should fit and be the same */
10276 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10277 u16 offset = params.counter_offsets_presp[i];
10278
10279 if (offset >= params.beacon_csa.probe_resp_len) {
10280 err = -EINVAL;
10281 goto free;
10282 }
10283
10284 if (params.beacon_csa.probe_resp[offset] !=
10285 params.count) {
10286 err = -EINVAL;
10287 goto free;
10288 }
10289 }
10290 }
10291
10292 skip_beacons:
10293 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
10294 if (err)
10295 goto free;
10296
10297 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
10298 wdev->iftype)) {
10299 err = -EINVAL;
10300 goto free;
10301 }
10302
10303 err = cfg80211_chandef_dfs_required(wdev->wiphy,
10304 ¶ms.chandef,
10305 wdev->iftype);
10306 if (err < 0)
10307 goto free;
10308
10309 if (err > 0) {
10310 params.radar_required = true;
10311 if (need_handle_dfs_flag &&
10312 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10313 err = -EINVAL;
10314 goto free;
10315 }
10316 }
10317
10318 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10319 params.block_tx = true;
10320
10321 if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
10322 err = nl80211_parse_punct_bitmap(rdev, info,
10323 ¶ms.chandef,
10324 ¶ms.punct_bitmap);
10325 if (err)
10326 goto free;
10327 }
10328
10329 wdev_lock(wdev);
10330 err = rdev_channel_switch(rdev, dev, ¶ms);
10331 wdev_unlock(wdev);
10332
10333 free:
10334 kfree(params.beacon_after.mbssid_ies);
10335 kfree(params.beacon_csa.mbssid_ies);
10336 kfree(params.beacon_after.rnr_ies);
10337 kfree(params.beacon_csa.rnr_ies);
10338 kfree(csa_attrs);
10339 return err;
10340 }
10341
nl80211_send_bss(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,struct cfg80211_internal_bss * intbss)10342 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10343 u32 seq, int flags,
10344 struct cfg80211_registered_device *rdev,
10345 struct wireless_dev *wdev,
10346 struct cfg80211_internal_bss *intbss)
10347 {
10348 struct cfg80211_bss *res = &intbss->pub;
10349 const struct cfg80211_bss_ies *ies;
10350 unsigned int link_id;
10351 void *hdr;
10352 struct nlattr *bss;
10353
10354 ASSERT_WDEV_LOCK(wdev);
10355
10356 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10357 NL80211_CMD_NEW_SCAN_RESULTS);
10358 if (!hdr)
10359 return -1;
10360
10361 genl_dump_check_consistent(cb, hdr);
10362
10363 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10364 goto nla_put_failure;
10365 if (wdev->netdev &&
10366 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10367 goto nla_put_failure;
10368 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10369 NL80211_ATTR_PAD))
10370 goto nla_put_failure;
10371
10372 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10373 if (!bss)
10374 goto nla_put_failure;
10375 if ((!is_zero_ether_addr(res->bssid) &&
10376 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10377 goto nla_put_failure;
10378
10379 rcu_read_lock();
10380 /* indicate whether we have probe response data or not */
10381 if (rcu_access_pointer(res->proberesp_ies) &&
10382 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10383 goto fail_unlock_rcu;
10384
10385 /* this pointer prefers to be pointed to probe response data
10386 * but is always valid
10387 */
10388 ies = rcu_dereference(res->ies);
10389 if (ies) {
10390 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10391 NL80211_BSS_PAD))
10392 goto fail_unlock_rcu;
10393 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10394 ies->len, ies->data))
10395 goto fail_unlock_rcu;
10396 }
10397
10398 /* and this pointer is always (unless driver didn't know) beacon data */
10399 ies = rcu_dereference(res->beacon_ies);
10400 if (ies && ies->from_beacon) {
10401 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10402 NL80211_BSS_PAD))
10403 goto fail_unlock_rcu;
10404 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10405 ies->len, ies->data))
10406 goto fail_unlock_rcu;
10407 }
10408 rcu_read_unlock();
10409
10410 if (res->beacon_interval &&
10411 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10412 goto nla_put_failure;
10413 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10414 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10415 nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10416 res->channel->freq_offset) ||
10417 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10418 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10419 jiffies_to_msecs(jiffies - intbss->ts)))
10420 goto nla_put_failure;
10421
10422 if (intbss->parent_tsf &&
10423 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10424 intbss->parent_tsf, NL80211_BSS_PAD) ||
10425 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10426 intbss->parent_bssid)))
10427 goto nla_put_failure;
10428
10429 if (intbss->ts_boottime &&
10430 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10431 intbss->ts_boottime, NL80211_BSS_PAD))
10432 goto nla_put_failure;
10433
10434 if (!nl80211_put_signal(msg, intbss->pub.chains,
10435 intbss->pub.chain_signal,
10436 NL80211_BSS_CHAIN_SIGNAL))
10437 goto nla_put_failure;
10438
10439 switch (rdev->wiphy.signal_type) {
10440 case CFG80211_SIGNAL_TYPE_MBM:
10441 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10442 goto nla_put_failure;
10443 break;
10444 case CFG80211_SIGNAL_TYPE_UNSPEC:
10445 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10446 goto nla_put_failure;
10447 break;
10448 default:
10449 break;
10450 }
10451
10452 switch (wdev->iftype) {
10453 case NL80211_IFTYPE_P2P_CLIENT:
10454 case NL80211_IFTYPE_STATION:
10455 for_each_valid_link(wdev, link_id) {
10456 if (intbss == wdev->links[link_id].client.current_bss &&
10457 (nla_put_u32(msg, NL80211_BSS_STATUS,
10458 NL80211_BSS_STATUS_ASSOCIATED) ||
10459 (wdev->valid_links &&
10460 (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10461 link_id) ||
10462 nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10463 wdev->u.client.connected_addr)))))
10464 goto nla_put_failure;
10465 }
10466 break;
10467 case NL80211_IFTYPE_ADHOC:
10468 if (intbss == wdev->u.ibss.current_bss &&
10469 nla_put_u32(msg, NL80211_BSS_STATUS,
10470 NL80211_BSS_STATUS_IBSS_JOINED))
10471 goto nla_put_failure;
10472 break;
10473 default:
10474 break;
10475 }
10476
10477 nla_nest_end(msg, bss);
10478
10479 genlmsg_end(msg, hdr);
10480 return 0;
10481
10482 fail_unlock_rcu:
10483 rcu_read_unlock();
10484 nla_put_failure:
10485 genlmsg_cancel(msg, hdr);
10486 return -EMSGSIZE;
10487 }
10488
nl80211_dump_scan(struct sk_buff * skb,struct netlink_callback * cb)10489 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10490 {
10491 struct cfg80211_registered_device *rdev;
10492 struct cfg80211_internal_bss *scan;
10493 struct wireless_dev *wdev;
10494 int start = cb->args[2], idx = 0;
10495 int err;
10496
10497 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10498 if (err)
10499 return err;
10500 /* nl80211_prepare_wdev_dump acquired it in the successful case */
10501 __acquire(&rdev->wiphy.mtx);
10502
10503 wdev_lock(wdev);
10504 spin_lock_bh(&rdev->bss_lock);
10505
10506 /*
10507 * dump_scan will be called multiple times to break up the scan results
10508 * into multiple messages. It is unlikely that any more bss-es will be
10509 * expired after the first call, so only call only call this on the
10510 * first dump_scan invocation.
10511 */
10512 if (start == 0)
10513 cfg80211_bss_expire(rdev);
10514
10515 cb->seq = rdev->bss_generation;
10516
10517 list_for_each_entry(scan, &rdev->bss_list, list) {
10518 if (++idx <= start)
10519 continue;
10520 if (nl80211_send_bss(skb, cb,
10521 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10522 rdev, wdev, scan) < 0) {
10523 idx--;
10524 break;
10525 }
10526 }
10527
10528 spin_unlock_bh(&rdev->bss_lock);
10529 wdev_unlock(wdev);
10530
10531 cb->args[2] = idx;
10532 wiphy_unlock(&rdev->wiphy);
10533
10534 return skb->len;
10535 }
10536
nl80211_send_survey(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct net_device * dev,bool allow_radio_stats,struct survey_info * survey)10537 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10538 int flags, struct net_device *dev,
10539 bool allow_radio_stats,
10540 struct survey_info *survey)
10541 {
10542 void *hdr;
10543 struct nlattr *infoattr;
10544
10545 /* skip radio stats if userspace didn't request them */
10546 if (!survey->channel && !allow_radio_stats)
10547 return 0;
10548
10549 hdr = nl80211hdr_put(msg, portid, seq, flags,
10550 NL80211_CMD_NEW_SURVEY_RESULTS);
10551 if (!hdr)
10552 return -ENOMEM;
10553
10554 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10555 goto nla_put_failure;
10556
10557 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10558 if (!infoattr)
10559 goto nla_put_failure;
10560
10561 if (survey->channel &&
10562 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10563 survey->channel->center_freq))
10564 goto nla_put_failure;
10565
10566 if (survey->channel && survey->channel->freq_offset &&
10567 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10568 survey->channel->freq_offset))
10569 goto nla_put_failure;
10570
10571 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10572 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10573 goto nla_put_failure;
10574 if ((survey->filled & SURVEY_INFO_IN_USE) &&
10575 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10576 goto nla_put_failure;
10577 if ((survey->filled & SURVEY_INFO_TIME) &&
10578 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10579 survey->time, NL80211_SURVEY_INFO_PAD))
10580 goto nla_put_failure;
10581 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10582 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10583 survey->time_busy, NL80211_SURVEY_INFO_PAD))
10584 goto nla_put_failure;
10585 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10586 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10587 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10588 goto nla_put_failure;
10589 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10590 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10591 survey->time_rx, NL80211_SURVEY_INFO_PAD))
10592 goto nla_put_failure;
10593 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10594 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10595 survey->time_tx, NL80211_SURVEY_INFO_PAD))
10596 goto nla_put_failure;
10597 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10598 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10599 survey->time_scan, NL80211_SURVEY_INFO_PAD))
10600 goto nla_put_failure;
10601 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10602 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10603 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10604 goto nla_put_failure;
10605
10606 nla_nest_end(msg, infoattr);
10607
10608 genlmsg_end(msg, hdr);
10609 return 0;
10610
10611 nla_put_failure:
10612 genlmsg_cancel(msg, hdr);
10613 return -EMSGSIZE;
10614 }
10615
nl80211_dump_survey(struct sk_buff * skb,struct netlink_callback * cb)10616 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10617 {
10618 struct nlattr **attrbuf;
10619 struct survey_info survey;
10620 struct cfg80211_registered_device *rdev;
10621 struct wireless_dev *wdev;
10622 int survey_idx = cb->args[2];
10623 int res;
10624 bool radio_stats;
10625
10626 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10627 if (!attrbuf)
10628 return -ENOMEM;
10629
10630 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10631 if (res) {
10632 kfree(attrbuf);
10633 return res;
10634 }
10635 /* nl80211_prepare_wdev_dump acquired it in the successful case */
10636 __acquire(&rdev->wiphy.mtx);
10637
10638 /* prepare_wdev_dump parsed the attributes */
10639 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10640
10641 if (!wdev->netdev) {
10642 res = -EINVAL;
10643 goto out_err;
10644 }
10645
10646 if (!rdev->ops->dump_survey) {
10647 res = -EOPNOTSUPP;
10648 goto out_err;
10649 }
10650
10651 while (1) {
10652 wdev_lock(wdev);
10653 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10654 wdev_unlock(wdev);
10655 if (res == -ENOENT)
10656 break;
10657 if (res)
10658 goto out_err;
10659
10660 /* don't send disabled channels, but do send non-channel data */
10661 if (survey.channel &&
10662 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10663 survey_idx++;
10664 continue;
10665 }
10666
10667 if (nl80211_send_survey(skb,
10668 NETLINK_CB(cb->skb).portid,
10669 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10670 wdev->netdev, radio_stats, &survey) < 0)
10671 goto out;
10672 survey_idx++;
10673 }
10674
10675 out:
10676 cb->args[2] = survey_idx;
10677 res = skb->len;
10678 out_err:
10679 kfree(attrbuf);
10680 wiphy_unlock(&rdev->wiphy);
10681 return res;
10682 }
10683
nl80211_valid_wpa_versions(u32 wpa_versions)10684 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10685 {
10686 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10687 NL80211_WPA_VERSION_2 |
10688 NL80211_WPA_VERSION_3));
10689 }
10690
nl80211_authenticate(struct sk_buff * skb,struct genl_info * info)10691 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10692 {
10693 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10694 struct net_device *dev = info->user_ptr[1];
10695 struct ieee80211_channel *chan;
10696 const u8 *bssid, *ssid;
10697 int err, ssid_len;
10698 enum nl80211_auth_type auth_type;
10699 struct key_parse key;
10700 bool local_state_change;
10701 struct cfg80211_auth_request req = {};
10702 u32 freq;
10703
10704 if (!info->attrs[NL80211_ATTR_MAC])
10705 return -EINVAL;
10706
10707 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10708 return -EINVAL;
10709
10710 if (!info->attrs[NL80211_ATTR_SSID])
10711 return -EINVAL;
10712
10713 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10714 return -EINVAL;
10715
10716 err = nl80211_parse_key(info, &key);
10717 if (err)
10718 return err;
10719
10720 if (key.idx >= 0) {
10721 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10722 return -EINVAL;
10723 if (!key.p.key || !key.p.key_len)
10724 return -EINVAL;
10725 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10726 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10727 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10728 key.p.key_len != WLAN_KEY_LEN_WEP104))
10729 return -EINVAL;
10730 if (key.idx > 3)
10731 return -EINVAL;
10732 } else {
10733 key.p.key_len = 0;
10734 key.p.key = NULL;
10735 }
10736
10737 if (key.idx >= 0) {
10738 int i;
10739 bool ok = false;
10740
10741 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10742 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10743 ok = true;
10744 break;
10745 }
10746 }
10747 if (!ok)
10748 return -EINVAL;
10749 }
10750
10751 if (!rdev->ops->auth)
10752 return -EOPNOTSUPP;
10753
10754 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10755 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10756 return -EOPNOTSUPP;
10757
10758 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10759 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10760 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10761 freq +=
10762 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10763
10764 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10765 if (!chan)
10766 return -EINVAL;
10767
10768 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10769 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10770
10771 if (info->attrs[NL80211_ATTR_IE]) {
10772 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10773 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10774 }
10775
10776 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10777 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10778 return -EINVAL;
10779
10780 if ((auth_type == NL80211_AUTHTYPE_SAE ||
10781 auth_type == NL80211_AUTHTYPE_FILS_SK ||
10782 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10783 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10784 !info->attrs[NL80211_ATTR_AUTH_DATA])
10785 return -EINVAL;
10786
10787 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10788 if (auth_type != NL80211_AUTHTYPE_SAE &&
10789 auth_type != NL80211_AUTHTYPE_FILS_SK &&
10790 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10791 auth_type != NL80211_AUTHTYPE_FILS_PK)
10792 return -EINVAL;
10793 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10794 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10795 }
10796
10797 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10798
10799 /*
10800 * Since we no longer track auth state, ignore
10801 * requests to only change local state.
10802 */
10803 if (local_state_change)
10804 return 0;
10805
10806 req.auth_type = auth_type;
10807 req.key = key.p.key;
10808 req.key_len = key.p.key_len;
10809 req.key_idx = key.idx;
10810 req.link_id = nl80211_link_id_or_invalid(info->attrs);
10811 if (req.link_id >= 0) {
10812 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10813 return -EINVAL;
10814 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10815 return -EINVAL;
10816 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10817 if (!is_valid_ether_addr(req.ap_mld_addr))
10818 return -EINVAL;
10819 }
10820
10821 req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10822 IEEE80211_BSS_TYPE_ESS,
10823 IEEE80211_PRIVACY_ANY);
10824 if (!req.bss)
10825 return -ENOENT;
10826
10827 wdev_lock(dev->ieee80211_ptr);
10828 err = cfg80211_mlme_auth(rdev, dev, &req);
10829 wdev_unlock(dev->ieee80211_ptr);
10830
10831 cfg80211_put_bss(&rdev->wiphy, req.bss);
10832
10833 return err;
10834 }
10835
validate_pae_over_nl80211(struct cfg80211_registered_device * rdev,struct genl_info * info)10836 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10837 struct genl_info *info)
10838 {
10839 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10840 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10841 return -EINVAL;
10842 }
10843
10844 if (!rdev->ops->tx_control_port ||
10845 !wiphy_ext_feature_isset(&rdev->wiphy,
10846 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10847 return -EOPNOTSUPP;
10848
10849 return 0;
10850 }
10851
nl80211_crypto_settings(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_crypto_settings * settings,int cipher_limit)10852 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10853 struct genl_info *info,
10854 struct cfg80211_crypto_settings *settings,
10855 int cipher_limit)
10856 {
10857 memset(settings, 0, sizeof(*settings));
10858
10859 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10860
10861 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10862 u16 proto;
10863
10864 proto = nla_get_u16(
10865 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10866 settings->control_port_ethertype = cpu_to_be16(proto);
10867 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10868 proto != ETH_P_PAE)
10869 return -EINVAL;
10870 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10871 settings->control_port_no_encrypt = true;
10872 } else
10873 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10874
10875 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10876 int r = validate_pae_over_nl80211(rdev, info);
10877
10878 if (r < 0)
10879 return r;
10880
10881 settings->control_port_over_nl80211 = true;
10882
10883 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10884 settings->control_port_no_preauth = true;
10885 }
10886
10887 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10888 void *data;
10889 int len, i;
10890
10891 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10892 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10893 settings->n_ciphers_pairwise = len / sizeof(u32);
10894
10895 if (len % sizeof(u32))
10896 return -EINVAL;
10897
10898 if (settings->n_ciphers_pairwise > cipher_limit)
10899 return -EINVAL;
10900
10901 memcpy(settings->ciphers_pairwise, data, len);
10902
10903 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10904 if (!cfg80211_supported_cipher_suite(
10905 &rdev->wiphy,
10906 settings->ciphers_pairwise[i]))
10907 return -EINVAL;
10908 }
10909
10910 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10911 settings->cipher_group =
10912 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10913 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10914 settings->cipher_group))
10915 return -EINVAL;
10916 }
10917
10918 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10919 settings->wpa_versions =
10920 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10921 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10922 return -EINVAL;
10923 }
10924
10925 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10926 void *data;
10927 int len;
10928
10929 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10930 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10931 settings->n_akm_suites = len / sizeof(u32);
10932
10933 if (len % sizeof(u32))
10934 return -EINVAL;
10935
10936 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10937 return -EINVAL;
10938
10939 memcpy(settings->akm_suites, data, len);
10940 }
10941
10942 if (info->attrs[NL80211_ATTR_PMK]) {
10943 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10944 return -EINVAL;
10945 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10946 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10947 !wiphy_ext_feature_isset(&rdev->wiphy,
10948 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10949 return -EINVAL;
10950 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10951 }
10952
10953 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10954 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10955 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10956 !wiphy_ext_feature_isset(&rdev->wiphy,
10957 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10958 return -EINVAL;
10959 settings->sae_pwd =
10960 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10961 settings->sae_pwd_len =
10962 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10963 }
10964
10965 if (info->attrs[NL80211_ATTR_SAE_PWE])
10966 settings->sae_pwe =
10967 nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10968 else
10969 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10970
10971 return 0;
10972 }
10973
nl80211_assoc_bss(struct cfg80211_registered_device * rdev,const u8 * ssid,int ssid_len,struct nlattr ** attrs)10974 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10975 const u8 *ssid, int ssid_len,
10976 struct nlattr **attrs)
10977 {
10978 struct ieee80211_channel *chan;
10979 struct cfg80211_bss *bss;
10980 const u8 *bssid;
10981 u32 freq;
10982
10983 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10984 return ERR_PTR(-EINVAL);
10985
10986 bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10987
10988 freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10989 if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10990 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10991
10992 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10993 if (!chan)
10994 return ERR_PTR(-EINVAL);
10995
10996 bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10997 ssid, ssid_len,
10998 IEEE80211_BSS_TYPE_ESS,
10999 IEEE80211_PRIVACY_ANY);
11000 if (!bss)
11001 return ERR_PTR(-ENOENT);
11002
11003 return bss;
11004 }
11005
nl80211_associate(struct sk_buff * skb,struct genl_info * info)11006 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
11007 {
11008 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11009 struct net_device *dev = info->user_ptr[1];
11010 struct cfg80211_assoc_request req = {};
11011 struct nlattr **attrs = NULL;
11012 const u8 *ap_addr, *ssid;
11013 unsigned int link_id;
11014 int err, ssid_len;
11015
11016 if (dev->ieee80211_ptr->conn_owner_nlportid &&
11017 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11018 return -EPERM;
11019
11020 if (!info->attrs[NL80211_ATTR_SSID])
11021 return -EINVAL;
11022
11023 if (!rdev->ops->assoc)
11024 return -EOPNOTSUPP;
11025
11026 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11027 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11028 return -EOPNOTSUPP;
11029
11030 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11031 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11032
11033 if (info->attrs[NL80211_ATTR_IE]) {
11034 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11035 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11036
11037 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11038 req.ie, req.ie_len)) {
11039 GENL_SET_ERR_MSG(info,
11040 "non-inheritance makes no sense");
11041 return -EINVAL;
11042 }
11043 }
11044
11045 if (info->attrs[NL80211_ATTR_USE_MFP]) {
11046 enum nl80211_mfp mfp =
11047 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11048 if (mfp == NL80211_MFP_REQUIRED)
11049 req.use_mfp = true;
11050 else if (mfp != NL80211_MFP_NO)
11051 return -EINVAL;
11052 }
11053
11054 if (info->attrs[NL80211_ATTR_PREV_BSSID])
11055 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11056
11057 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11058 req.flags |= ASSOC_REQ_DISABLE_HT;
11059
11060 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11061 memcpy(&req.ht_capa_mask,
11062 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11063 sizeof(req.ht_capa_mask));
11064
11065 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11066 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11067 return -EINVAL;
11068 memcpy(&req.ht_capa,
11069 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11070 sizeof(req.ht_capa));
11071 }
11072
11073 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11074 req.flags |= ASSOC_REQ_DISABLE_VHT;
11075
11076 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11077 req.flags |= ASSOC_REQ_DISABLE_HE;
11078
11079 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11080 req.flags |= ASSOC_REQ_DISABLE_EHT;
11081
11082 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11083 memcpy(&req.vht_capa_mask,
11084 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11085 sizeof(req.vht_capa_mask));
11086
11087 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11088 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11089 return -EINVAL;
11090 memcpy(&req.vht_capa,
11091 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11092 sizeof(req.vht_capa));
11093 }
11094
11095 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11096 if (!((rdev->wiphy.features &
11097 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11098 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11099 !wiphy_ext_feature_isset(&rdev->wiphy,
11100 NL80211_EXT_FEATURE_RRM))
11101 return -EINVAL;
11102 req.flags |= ASSOC_REQ_USE_RRM;
11103 }
11104
11105 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
11106 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
11107 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
11108 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
11109 return -EINVAL;
11110 req.fils_nonces =
11111 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
11112 }
11113
11114 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
11115 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
11116 return -EINVAL;
11117 memcpy(&req.s1g_capa_mask,
11118 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
11119 sizeof(req.s1g_capa_mask));
11120 }
11121
11122 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
11123 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
11124 return -EINVAL;
11125 memcpy(&req.s1g_capa,
11126 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
11127 sizeof(req.s1g_capa));
11128 }
11129
11130 req.link_id = nl80211_link_id_or_invalid(info->attrs);
11131
11132 if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11133 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
11134 struct nlattr *link;
11135 int rem = 0;
11136
11137 if (req.link_id < 0)
11138 return -EINVAL;
11139
11140 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
11141 return -EINVAL;
11142
11143 if (info->attrs[NL80211_ATTR_MAC] ||
11144 info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11145 !info->attrs[NL80211_ATTR_MLD_ADDR])
11146 return -EINVAL;
11147
11148 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
11149 ap_addr = req.ap_mld_addr;
11150
11151 attrs = kzalloc(attrsize, GFP_KERNEL);
11152 if (!attrs)
11153 return -ENOMEM;
11154
11155 nla_for_each_nested(link,
11156 info->attrs[NL80211_ATTR_MLO_LINKS],
11157 rem) {
11158 memset(attrs, 0, attrsize);
11159
11160 nla_parse_nested(attrs, NL80211_ATTR_MAX,
11161 link, NULL, NULL);
11162
11163 if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
11164 err = -EINVAL;
11165 goto free;
11166 }
11167
11168 link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
11169 /* cannot use the same link ID again */
11170 if (req.links[link_id].bss) {
11171 err = -EINVAL;
11172 goto free;
11173 }
11174 req.links[link_id].bss =
11175 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs);
11176 if (IS_ERR(req.links[link_id].bss)) {
11177 err = PTR_ERR(req.links[link_id].bss);
11178 req.links[link_id].bss = NULL;
11179 goto free;
11180 }
11181
11182 if (attrs[NL80211_ATTR_IE]) {
11183 req.links[link_id].elems =
11184 nla_data(attrs[NL80211_ATTR_IE]);
11185 req.links[link_id].elems_len =
11186 nla_len(attrs[NL80211_ATTR_IE]);
11187
11188 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
11189 req.links[link_id].elems,
11190 req.links[link_id].elems_len)) {
11191 GENL_SET_ERR_MSG(info,
11192 "cannot deal with fragmentation");
11193 err = -EINVAL;
11194 goto free;
11195 }
11196
11197 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11198 req.links[link_id].elems,
11199 req.links[link_id].elems_len)) {
11200 GENL_SET_ERR_MSG(info,
11201 "cannot deal with non-inheritance");
11202 err = -EINVAL;
11203 goto free;
11204 }
11205 }
11206
11207 req.links[link_id].disabled =
11208 nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]);
11209 }
11210
11211 if (!req.links[req.link_id].bss) {
11212 err = -EINVAL;
11213 goto free;
11214 }
11215
11216 if (req.links[req.link_id].elems_len) {
11217 GENL_SET_ERR_MSG(info,
11218 "cannot have per-link elems on assoc link");
11219 err = -EINVAL;
11220 goto free;
11221 }
11222
11223 if (req.links[req.link_id].disabled) {
11224 GENL_SET_ERR_MSG(info,
11225 "cannot have assoc link disabled");
11226 err = -EINVAL;
11227 goto free;
11228 }
11229
11230 kfree(attrs);
11231 attrs = NULL;
11232 } else {
11233 if (req.link_id >= 0)
11234 return -EINVAL;
11235
11236 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs);
11237 if (IS_ERR(req.bss))
11238 return PTR_ERR(req.bss);
11239 ap_addr = req.bss->bssid;
11240 }
11241
11242 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
11243 if (!err) {
11244 wdev_lock(dev->ieee80211_ptr);
11245
11246 err = cfg80211_mlme_assoc(rdev, dev, &req);
11247
11248 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11249 dev->ieee80211_ptr->conn_owner_nlportid =
11250 info->snd_portid;
11251 memcpy(dev->ieee80211_ptr->disconnect_bssid,
11252 ap_addr, ETH_ALEN);
11253 }
11254
11255 wdev_unlock(dev->ieee80211_ptr);
11256 }
11257
11258 free:
11259 for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
11260 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
11261 cfg80211_put_bss(&rdev->wiphy, req.bss);
11262 kfree(attrs);
11263
11264 return err;
11265 }
11266
nl80211_deauthenticate(struct sk_buff * skb,struct genl_info * info)11267 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
11268 {
11269 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11270 struct net_device *dev = info->user_ptr[1];
11271 const u8 *ie = NULL, *bssid;
11272 int ie_len = 0, err;
11273 u16 reason_code;
11274 bool local_state_change;
11275
11276 if (dev->ieee80211_ptr->conn_owner_nlportid &&
11277 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11278 return -EPERM;
11279
11280 if (!info->attrs[NL80211_ATTR_MAC])
11281 return -EINVAL;
11282
11283 if (!info->attrs[NL80211_ATTR_REASON_CODE])
11284 return -EINVAL;
11285
11286 if (!rdev->ops->deauth)
11287 return -EOPNOTSUPP;
11288
11289 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11290 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11291 return -EOPNOTSUPP;
11292
11293 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11294
11295 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11296 if (reason_code == 0) {
11297 /* Reason Code 0 is reserved */
11298 return -EINVAL;
11299 }
11300
11301 if (info->attrs[NL80211_ATTR_IE]) {
11302 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11303 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11304 }
11305
11306 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11307
11308 wdev_lock(dev->ieee80211_ptr);
11309 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11310 local_state_change);
11311 wdev_unlock(dev->ieee80211_ptr);
11312 return err;
11313 }
11314
nl80211_disassociate(struct sk_buff * skb,struct genl_info * info)11315 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11316 {
11317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11318 struct net_device *dev = info->user_ptr[1];
11319 const u8 *ie = NULL, *bssid;
11320 int ie_len = 0, err;
11321 u16 reason_code;
11322 bool local_state_change;
11323
11324 if (dev->ieee80211_ptr->conn_owner_nlportid &&
11325 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11326 return -EPERM;
11327
11328 if (!info->attrs[NL80211_ATTR_MAC])
11329 return -EINVAL;
11330
11331 if (!info->attrs[NL80211_ATTR_REASON_CODE])
11332 return -EINVAL;
11333
11334 if (!rdev->ops->disassoc)
11335 return -EOPNOTSUPP;
11336
11337 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11338 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11339 return -EOPNOTSUPP;
11340
11341 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11342
11343 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11344 if (reason_code == 0) {
11345 /* Reason Code 0 is reserved */
11346 return -EINVAL;
11347 }
11348
11349 if (info->attrs[NL80211_ATTR_IE]) {
11350 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11351 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11352 }
11353
11354 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11355
11356 wdev_lock(dev->ieee80211_ptr);
11357 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11358 local_state_change);
11359 wdev_unlock(dev->ieee80211_ptr);
11360 return err;
11361 }
11362
11363 static bool
nl80211_parse_mcast_rate(struct cfg80211_registered_device * rdev,int mcast_rate[NUM_NL80211_BANDS],int rateval)11364 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11365 int mcast_rate[NUM_NL80211_BANDS],
11366 int rateval)
11367 {
11368 struct wiphy *wiphy = &rdev->wiphy;
11369 bool found = false;
11370 int band, i;
11371
11372 for (band = 0; band < NUM_NL80211_BANDS; band++) {
11373 struct ieee80211_supported_band *sband;
11374
11375 sband = wiphy->bands[band];
11376 if (!sband)
11377 continue;
11378
11379 for (i = 0; i < sband->n_bitrates; i++) {
11380 if (sband->bitrates[i].bitrate == rateval) {
11381 mcast_rate[band] = i + 1;
11382 found = true;
11383 break;
11384 }
11385 }
11386 }
11387
11388 return found;
11389 }
11390
nl80211_join_ibss(struct sk_buff * skb,struct genl_info * info)11391 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11392 {
11393 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11394 struct net_device *dev = info->user_ptr[1];
11395 struct cfg80211_ibss_params ibss;
11396 struct wiphy *wiphy;
11397 struct cfg80211_cached_keys *connkeys = NULL;
11398 int err;
11399
11400 memset(&ibss, 0, sizeof(ibss));
11401
11402 if (!info->attrs[NL80211_ATTR_SSID] ||
11403 !nla_len(info->attrs[NL80211_ATTR_SSID]))
11404 return -EINVAL;
11405
11406 ibss.beacon_interval = 100;
11407
11408 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11409 ibss.beacon_interval =
11410 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11411
11412 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11413 ibss.beacon_interval);
11414 if (err)
11415 return err;
11416
11417 if (!rdev->ops->join_ibss)
11418 return -EOPNOTSUPP;
11419
11420 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11421 return -EOPNOTSUPP;
11422
11423 wiphy = &rdev->wiphy;
11424
11425 if (info->attrs[NL80211_ATTR_MAC]) {
11426 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11427
11428 if (!is_valid_ether_addr(ibss.bssid))
11429 return -EINVAL;
11430 }
11431 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11432 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11433
11434 if (info->attrs[NL80211_ATTR_IE]) {
11435 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11436 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11437 }
11438
11439 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11440 if (err)
11441 return err;
11442
11443 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11444 NL80211_IFTYPE_ADHOC))
11445 return -EINVAL;
11446
11447 switch (ibss.chandef.width) {
11448 case NL80211_CHAN_WIDTH_5:
11449 case NL80211_CHAN_WIDTH_10:
11450 case NL80211_CHAN_WIDTH_20_NOHT:
11451 break;
11452 case NL80211_CHAN_WIDTH_20:
11453 case NL80211_CHAN_WIDTH_40:
11454 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11455 return -EINVAL;
11456 break;
11457 case NL80211_CHAN_WIDTH_80:
11458 case NL80211_CHAN_WIDTH_80P80:
11459 case NL80211_CHAN_WIDTH_160:
11460 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11461 return -EINVAL;
11462 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11463 NL80211_EXT_FEATURE_VHT_IBSS))
11464 return -EINVAL;
11465 break;
11466 case NL80211_CHAN_WIDTH_320:
11467 return -EINVAL;
11468 default:
11469 return -EINVAL;
11470 }
11471
11472 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11473 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11474
11475 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11476 u8 *rates =
11477 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11478 int n_rates =
11479 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11480 struct ieee80211_supported_band *sband =
11481 wiphy->bands[ibss.chandef.chan->band];
11482
11483 err = ieee80211_get_ratemask(sband, rates, n_rates,
11484 &ibss.basic_rates);
11485 if (err)
11486 return err;
11487 }
11488
11489 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11490 memcpy(&ibss.ht_capa_mask,
11491 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11492 sizeof(ibss.ht_capa_mask));
11493
11494 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11495 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11496 return -EINVAL;
11497 memcpy(&ibss.ht_capa,
11498 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11499 sizeof(ibss.ht_capa));
11500 }
11501
11502 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11503 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11504 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11505 return -EINVAL;
11506
11507 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11508 bool no_ht = false;
11509
11510 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11511 if (IS_ERR(connkeys))
11512 return PTR_ERR(connkeys);
11513
11514 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11515 no_ht) {
11516 kfree_sensitive(connkeys);
11517 return -EINVAL;
11518 }
11519 }
11520
11521 ibss.control_port =
11522 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11523
11524 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11525 int r = validate_pae_over_nl80211(rdev, info);
11526
11527 if (r < 0) {
11528 kfree_sensitive(connkeys);
11529 return r;
11530 }
11531
11532 ibss.control_port_over_nl80211 = true;
11533 }
11534
11535 ibss.userspace_handles_dfs =
11536 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11537
11538 wdev_lock(dev->ieee80211_ptr);
11539 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11540 if (err)
11541 kfree_sensitive(connkeys);
11542 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11543 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11544 wdev_unlock(dev->ieee80211_ptr);
11545
11546 return err;
11547 }
11548
nl80211_leave_ibss(struct sk_buff * skb,struct genl_info * info)11549 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11550 {
11551 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11552 struct net_device *dev = info->user_ptr[1];
11553
11554 if (!rdev->ops->leave_ibss)
11555 return -EOPNOTSUPP;
11556
11557 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11558 return -EOPNOTSUPP;
11559
11560 return cfg80211_leave_ibss(rdev, dev, false);
11561 }
11562
nl80211_set_mcast_rate(struct sk_buff * skb,struct genl_info * info)11563 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11564 {
11565 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11566 struct net_device *dev = info->user_ptr[1];
11567 int mcast_rate[NUM_NL80211_BANDS];
11568 u32 nla_rate;
11569
11570 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11571 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11572 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11573 return -EOPNOTSUPP;
11574
11575 if (!rdev->ops->set_mcast_rate)
11576 return -EOPNOTSUPP;
11577
11578 memset(mcast_rate, 0, sizeof(mcast_rate));
11579
11580 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11581 return -EINVAL;
11582
11583 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11584 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11585 return -EINVAL;
11586
11587 return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11588 }
11589
11590 static struct sk_buff *
__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,int approxlen,u32 portid,u32 seq,enum nl80211_commands cmd,enum nl80211_attrs attr,const struct nl80211_vendor_cmd_info * info,gfp_t gfp)11591 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11592 struct wireless_dev *wdev, int approxlen,
11593 u32 portid, u32 seq, enum nl80211_commands cmd,
11594 enum nl80211_attrs attr,
11595 const struct nl80211_vendor_cmd_info *info,
11596 gfp_t gfp)
11597 {
11598 struct sk_buff *skb;
11599 void *hdr;
11600 struct nlattr *data;
11601
11602 skb = nlmsg_new(approxlen + 100, gfp);
11603 if (!skb)
11604 return NULL;
11605
11606 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11607 if (!hdr) {
11608 kfree_skb(skb);
11609 return NULL;
11610 }
11611
11612 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11613 goto nla_put_failure;
11614
11615 if (info) {
11616 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11617 info->vendor_id))
11618 goto nla_put_failure;
11619 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11620 info->subcmd))
11621 goto nla_put_failure;
11622 }
11623
11624 if (wdev) {
11625 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11626 wdev_id(wdev), NL80211_ATTR_PAD))
11627 goto nla_put_failure;
11628 if (wdev->netdev &&
11629 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11630 wdev->netdev->ifindex))
11631 goto nla_put_failure;
11632 }
11633
11634 data = nla_nest_start_noflag(skb, attr);
11635 if (!data)
11636 goto nla_put_failure;
11637
11638 ((void **)skb->cb)[0] = rdev;
11639 ((void **)skb->cb)[1] = hdr;
11640 ((void **)skb->cb)[2] = data;
11641
11642 return skb;
11643
11644 nla_put_failure:
11645 kfree_skb(skb);
11646 return NULL;
11647 }
11648
__cfg80211_alloc_event_skb(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_commands cmd,enum nl80211_attrs attr,unsigned int portid,int vendor_event_idx,int approxlen,gfp_t gfp)11649 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11650 struct wireless_dev *wdev,
11651 enum nl80211_commands cmd,
11652 enum nl80211_attrs attr,
11653 unsigned int portid,
11654 int vendor_event_idx,
11655 int approxlen, gfp_t gfp)
11656 {
11657 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11658 const struct nl80211_vendor_cmd_info *info;
11659
11660 switch (cmd) {
11661 case NL80211_CMD_TESTMODE:
11662 if (WARN_ON(vendor_event_idx != -1))
11663 return NULL;
11664 info = NULL;
11665 break;
11666 case NL80211_CMD_VENDOR:
11667 if (WARN_ON(vendor_event_idx < 0 ||
11668 vendor_event_idx >= wiphy->n_vendor_events))
11669 return NULL;
11670 info = &wiphy->vendor_events[vendor_event_idx];
11671 break;
11672 default:
11673 WARN_ON(1);
11674 return NULL;
11675 }
11676
11677 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11678 cmd, attr, info, gfp);
11679 }
11680 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11681
__cfg80211_send_event_skb(struct sk_buff * skb,gfp_t gfp)11682 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11683 {
11684 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11685 void *hdr = ((void **)skb->cb)[1];
11686 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11687 struct nlattr *data = ((void **)skb->cb)[2];
11688 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11689
11690 /* clear CB data for netlink core to own from now on */
11691 memset(skb->cb, 0, sizeof(skb->cb));
11692
11693 nla_nest_end(skb, data);
11694 genlmsg_end(skb, hdr);
11695
11696 if (nlhdr->nlmsg_pid) {
11697 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11698 nlhdr->nlmsg_pid);
11699 } else {
11700 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11701 mcgrp = NL80211_MCGRP_VENDOR;
11702
11703 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11704 skb, 0, mcgrp, gfp);
11705 }
11706 }
11707 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11708
11709 #ifdef CONFIG_NL80211_TESTMODE
nl80211_testmode_do(struct sk_buff * skb,struct genl_info * info)11710 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11711 {
11712 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11713 struct wireless_dev *wdev;
11714 int err;
11715
11716 lockdep_assert_held(&rdev->wiphy.mtx);
11717
11718 wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11719 info->attrs);
11720
11721 if (!rdev->ops->testmode_cmd)
11722 return -EOPNOTSUPP;
11723
11724 if (IS_ERR(wdev)) {
11725 err = PTR_ERR(wdev);
11726 if (err != -EINVAL)
11727 return err;
11728 wdev = NULL;
11729 } else if (wdev->wiphy != &rdev->wiphy) {
11730 return -EINVAL;
11731 }
11732
11733 if (!info->attrs[NL80211_ATTR_TESTDATA])
11734 return -EINVAL;
11735
11736 rdev->cur_cmd_info = info;
11737 err = rdev_testmode_cmd(rdev, wdev,
11738 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11739 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11740 rdev->cur_cmd_info = NULL;
11741
11742 return err;
11743 }
11744
nl80211_testmode_dump(struct sk_buff * skb,struct netlink_callback * cb)11745 static int nl80211_testmode_dump(struct sk_buff *skb,
11746 struct netlink_callback *cb)
11747 {
11748 struct cfg80211_registered_device *rdev;
11749 struct nlattr **attrbuf = NULL;
11750 int err;
11751 long phy_idx;
11752 void *data = NULL;
11753 int data_len = 0;
11754
11755 rtnl_lock();
11756
11757 if (cb->args[0]) {
11758 /*
11759 * 0 is a valid index, but not valid for args[0],
11760 * so we need to offset by 1.
11761 */
11762 phy_idx = cb->args[0] - 1;
11763
11764 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11765 if (!rdev) {
11766 err = -ENOENT;
11767 goto out_err;
11768 }
11769 } else {
11770 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11771 GFP_KERNEL);
11772 if (!attrbuf) {
11773 err = -ENOMEM;
11774 goto out_err;
11775 }
11776
11777 err = nlmsg_parse_deprecated(cb->nlh,
11778 GENL_HDRLEN + nl80211_fam.hdrsize,
11779 attrbuf, nl80211_fam.maxattr,
11780 nl80211_policy, NULL);
11781 if (err)
11782 goto out_err;
11783
11784 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11785 if (IS_ERR(rdev)) {
11786 err = PTR_ERR(rdev);
11787 goto out_err;
11788 }
11789 phy_idx = rdev->wiphy_idx;
11790
11791 if (attrbuf[NL80211_ATTR_TESTDATA])
11792 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11793 }
11794
11795 if (cb->args[1]) {
11796 data = nla_data((void *)cb->args[1]);
11797 data_len = nla_len((void *)cb->args[1]);
11798 }
11799
11800 if (!rdev->ops->testmode_dump) {
11801 err = -EOPNOTSUPP;
11802 goto out_err;
11803 }
11804
11805 while (1) {
11806 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11807 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11808 NL80211_CMD_TESTMODE);
11809 struct nlattr *tmdata;
11810
11811 if (!hdr)
11812 break;
11813
11814 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11815 genlmsg_cancel(skb, hdr);
11816 break;
11817 }
11818
11819 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11820 if (!tmdata) {
11821 genlmsg_cancel(skb, hdr);
11822 break;
11823 }
11824 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11825 nla_nest_end(skb, tmdata);
11826
11827 if (err == -ENOBUFS || err == -ENOENT) {
11828 genlmsg_cancel(skb, hdr);
11829 break;
11830 } else if (err) {
11831 genlmsg_cancel(skb, hdr);
11832 goto out_err;
11833 }
11834
11835 genlmsg_end(skb, hdr);
11836 }
11837
11838 err = skb->len;
11839 /* see above */
11840 cb->args[0] = phy_idx + 1;
11841 out_err:
11842 kfree(attrbuf);
11843 rtnl_unlock();
11844 return err;
11845 }
11846 #endif
11847
nl80211_connect(struct sk_buff * skb,struct genl_info * info)11848 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11849 {
11850 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11851 struct net_device *dev = info->user_ptr[1];
11852 struct cfg80211_connect_params connect;
11853 struct wiphy *wiphy;
11854 struct cfg80211_cached_keys *connkeys = NULL;
11855 u32 freq = 0;
11856 int err;
11857
11858 memset(&connect, 0, sizeof(connect));
11859
11860 if (!info->attrs[NL80211_ATTR_SSID] ||
11861 !nla_len(info->attrs[NL80211_ATTR_SSID]))
11862 return -EINVAL;
11863
11864 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11865 connect.auth_type =
11866 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11867 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11868 NL80211_CMD_CONNECT))
11869 return -EINVAL;
11870 } else
11871 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11872
11873 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11874
11875 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11876 !wiphy_ext_feature_isset(&rdev->wiphy,
11877 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11878 return -EINVAL;
11879 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11880
11881 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11882 NL80211_MAX_NR_CIPHER_SUITES);
11883 if (err)
11884 return err;
11885
11886 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11887 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11888 return -EOPNOTSUPP;
11889
11890 wiphy = &rdev->wiphy;
11891
11892 connect.bg_scan_period = -1;
11893 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11894 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11895 connect.bg_scan_period =
11896 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11897 }
11898
11899 if (info->attrs[NL80211_ATTR_MAC])
11900 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11901 else if (info->attrs[NL80211_ATTR_MAC_HINT])
11902 connect.bssid_hint =
11903 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11904 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11905 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11906
11907 if (info->attrs[NL80211_ATTR_IE]) {
11908 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11909 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11910 }
11911
11912 if (info->attrs[NL80211_ATTR_USE_MFP]) {
11913 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11914 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11915 !wiphy_ext_feature_isset(&rdev->wiphy,
11916 NL80211_EXT_FEATURE_MFP_OPTIONAL))
11917 return -EOPNOTSUPP;
11918 } else {
11919 connect.mfp = NL80211_MFP_NO;
11920 }
11921
11922 if (info->attrs[NL80211_ATTR_PREV_BSSID])
11923 connect.prev_bssid =
11924 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11925
11926 if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11927 freq = MHZ_TO_KHZ(nla_get_u32(
11928 info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11929 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11930 freq +=
11931 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11932
11933 if (freq) {
11934 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11935 if (!connect.channel)
11936 return -EINVAL;
11937 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11938 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11939 freq = MHZ_TO_KHZ(freq);
11940 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11941 if (!connect.channel_hint)
11942 return -EINVAL;
11943 }
11944
11945 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11946 connect.edmg.channels =
11947 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11948
11949 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11950 connect.edmg.bw_config =
11951 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11952 }
11953
11954 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11955 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11956 if (IS_ERR(connkeys))
11957 return PTR_ERR(connkeys);
11958 }
11959
11960 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11961 connect.flags |= ASSOC_REQ_DISABLE_HT;
11962
11963 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11964 memcpy(&connect.ht_capa_mask,
11965 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11966 sizeof(connect.ht_capa_mask));
11967
11968 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11969 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11970 kfree_sensitive(connkeys);
11971 return -EINVAL;
11972 }
11973 memcpy(&connect.ht_capa,
11974 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11975 sizeof(connect.ht_capa));
11976 }
11977
11978 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11979 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11980
11981 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11982 connect.flags |= ASSOC_REQ_DISABLE_HE;
11983
11984 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11985 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11986
11987 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11988 memcpy(&connect.vht_capa_mask,
11989 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11990 sizeof(connect.vht_capa_mask));
11991
11992 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11993 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11994 kfree_sensitive(connkeys);
11995 return -EINVAL;
11996 }
11997 memcpy(&connect.vht_capa,
11998 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11999 sizeof(connect.vht_capa));
12000 }
12001
12002 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
12003 if (!((rdev->wiphy.features &
12004 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
12005 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
12006 !wiphy_ext_feature_isset(&rdev->wiphy,
12007 NL80211_EXT_FEATURE_RRM)) {
12008 kfree_sensitive(connkeys);
12009 return -EINVAL;
12010 }
12011 connect.flags |= ASSOC_REQ_USE_RRM;
12012 }
12013
12014 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
12015 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
12016 kfree_sensitive(connkeys);
12017 return -EOPNOTSUPP;
12018 }
12019
12020 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
12021 /* bss selection makes no sense if bssid is set */
12022 if (connect.bssid) {
12023 kfree_sensitive(connkeys);
12024 return -EINVAL;
12025 }
12026
12027 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
12028 wiphy, &connect.bss_select);
12029 if (err) {
12030 kfree_sensitive(connkeys);
12031 return err;
12032 }
12033 }
12034
12035 if (wiphy_ext_feature_isset(&rdev->wiphy,
12036 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
12037 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12038 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12039 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12040 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12041 connect.fils_erp_username =
12042 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12043 connect.fils_erp_username_len =
12044 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12045 connect.fils_erp_realm =
12046 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12047 connect.fils_erp_realm_len =
12048 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12049 connect.fils_erp_next_seq_num =
12050 nla_get_u16(
12051 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12052 connect.fils_erp_rrk =
12053 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12054 connect.fils_erp_rrk_len =
12055 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12056 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12057 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12058 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12059 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12060 kfree_sensitive(connkeys);
12061 return -EINVAL;
12062 }
12063
12064 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
12065 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12066 kfree_sensitive(connkeys);
12067 GENL_SET_ERR_MSG(info,
12068 "external auth requires connection ownership");
12069 return -EINVAL;
12070 }
12071 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
12072 }
12073
12074 if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
12075 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
12076
12077 wdev_lock(dev->ieee80211_ptr);
12078
12079 err = cfg80211_connect(rdev, dev, &connect, connkeys,
12080 connect.prev_bssid);
12081 if (err)
12082 kfree_sensitive(connkeys);
12083
12084 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12085 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12086 if (connect.bssid)
12087 memcpy(dev->ieee80211_ptr->disconnect_bssid,
12088 connect.bssid, ETH_ALEN);
12089 else
12090 eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
12091 }
12092
12093 wdev_unlock(dev->ieee80211_ptr);
12094
12095 return err;
12096 }
12097
nl80211_update_connect_params(struct sk_buff * skb,struct genl_info * info)12098 static int nl80211_update_connect_params(struct sk_buff *skb,
12099 struct genl_info *info)
12100 {
12101 struct cfg80211_connect_params connect = {};
12102 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12103 struct net_device *dev = info->user_ptr[1];
12104 struct wireless_dev *wdev = dev->ieee80211_ptr;
12105 bool fils_sk_offload;
12106 u32 auth_type;
12107 u32 changed = 0;
12108 int ret;
12109
12110 if (!rdev->ops->update_connect_params)
12111 return -EOPNOTSUPP;
12112
12113 if (info->attrs[NL80211_ATTR_IE]) {
12114 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12115 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12116 changed |= UPDATE_ASSOC_IES;
12117 }
12118
12119 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
12120 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
12121
12122 /*
12123 * when driver supports fils-sk offload all attributes must be
12124 * provided. So the else covers "fils-sk-not-all" and
12125 * "no-fils-sk-any".
12126 */
12127 if (fils_sk_offload &&
12128 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12129 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12130 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12131 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12132 connect.fils_erp_username =
12133 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12134 connect.fils_erp_username_len =
12135 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12136 connect.fils_erp_realm =
12137 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12138 connect.fils_erp_realm_len =
12139 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12140 connect.fils_erp_next_seq_num =
12141 nla_get_u16(
12142 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12143 connect.fils_erp_rrk =
12144 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12145 connect.fils_erp_rrk_len =
12146 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12147 changed |= UPDATE_FILS_ERP_INFO;
12148 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12149 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12150 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12151 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12152 return -EINVAL;
12153 }
12154
12155 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
12156 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
12157 if (!nl80211_valid_auth_type(rdev, auth_type,
12158 NL80211_CMD_CONNECT))
12159 return -EINVAL;
12160
12161 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
12162 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
12163 return -EINVAL;
12164
12165 connect.auth_type = auth_type;
12166 changed |= UPDATE_AUTH_TYPE;
12167 }
12168
12169 wdev_lock(dev->ieee80211_ptr);
12170 if (!wdev->connected)
12171 ret = -ENOLINK;
12172 else
12173 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
12174 wdev_unlock(dev->ieee80211_ptr);
12175
12176 return ret;
12177 }
12178
nl80211_disconnect(struct sk_buff * skb,struct genl_info * info)12179 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
12180 {
12181 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12182 struct net_device *dev = info->user_ptr[1];
12183 u16 reason;
12184 int ret;
12185
12186 if (dev->ieee80211_ptr->conn_owner_nlportid &&
12187 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
12188 return -EPERM;
12189
12190 if (!info->attrs[NL80211_ATTR_REASON_CODE])
12191 reason = WLAN_REASON_DEAUTH_LEAVING;
12192 else
12193 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
12194
12195 if (reason == 0)
12196 return -EINVAL;
12197
12198 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12199 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12200 return -EOPNOTSUPP;
12201
12202 wdev_lock(dev->ieee80211_ptr);
12203 ret = cfg80211_disconnect(rdev, dev, reason, true);
12204 wdev_unlock(dev->ieee80211_ptr);
12205 return ret;
12206 }
12207
nl80211_wiphy_netns(struct sk_buff * skb,struct genl_info * info)12208 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
12209 {
12210 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12211 struct net *net;
12212 int err;
12213
12214 if (info->attrs[NL80211_ATTR_PID]) {
12215 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
12216
12217 net = get_net_ns_by_pid(pid);
12218 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
12219 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
12220
12221 net = get_net_ns_by_fd(fd);
12222 } else {
12223 return -EINVAL;
12224 }
12225
12226 if (IS_ERR(net))
12227 return PTR_ERR(net);
12228
12229 err = 0;
12230
12231 /* check if anything to do */
12232 if (!net_eq(wiphy_net(&rdev->wiphy), net))
12233 err = cfg80211_switch_netns(rdev, net);
12234
12235 put_net(net);
12236 return err;
12237 }
12238
nl80211_setdel_pmksa(struct sk_buff * skb,struct genl_info * info)12239 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
12240 {
12241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12242 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
12243 struct cfg80211_pmksa *pmksa) = NULL;
12244 struct net_device *dev = info->user_ptr[1];
12245 struct cfg80211_pmksa pmksa;
12246
12247 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12248
12249 if (!info->attrs[NL80211_ATTR_PMKID])
12250 return -EINVAL;
12251
12252 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12253
12254 if (info->attrs[NL80211_ATTR_MAC]) {
12255 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12256 } else if (info->attrs[NL80211_ATTR_SSID] &&
12257 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12258 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
12259 info->attrs[NL80211_ATTR_PMK])) {
12260 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12261 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12262 pmksa.cache_id =
12263 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12264 } else {
12265 return -EINVAL;
12266 }
12267 if (info->attrs[NL80211_ATTR_PMK]) {
12268 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12269 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12270 }
12271
12272 if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
12273 pmksa.pmk_lifetime =
12274 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
12275
12276 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
12277 pmksa.pmk_reauth_threshold =
12278 nla_get_u8(
12279 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
12280
12281 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12282 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12283 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
12284 wiphy_ext_feature_isset(&rdev->wiphy,
12285 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12286 return -EOPNOTSUPP;
12287
12288 switch (info->genlhdr->cmd) {
12289 case NL80211_CMD_SET_PMKSA:
12290 rdev_ops = rdev->ops->set_pmksa;
12291 break;
12292 case NL80211_CMD_DEL_PMKSA:
12293 rdev_ops = rdev->ops->del_pmksa;
12294 break;
12295 default:
12296 WARN_ON(1);
12297 break;
12298 }
12299
12300 if (!rdev_ops)
12301 return -EOPNOTSUPP;
12302
12303 return rdev_ops(&rdev->wiphy, dev, &pmksa);
12304 }
12305
nl80211_flush_pmksa(struct sk_buff * skb,struct genl_info * info)12306 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12307 {
12308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12309 struct net_device *dev = info->user_ptr[1];
12310
12311 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12312 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12313 return -EOPNOTSUPP;
12314
12315 if (!rdev->ops->flush_pmksa)
12316 return -EOPNOTSUPP;
12317
12318 return rdev_flush_pmksa(rdev, dev);
12319 }
12320
nl80211_tdls_mgmt(struct sk_buff * skb,struct genl_info * info)12321 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12322 {
12323 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12324 struct net_device *dev = info->user_ptr[1];
12325 u8 action_code, dialog_token;
12326 u32 peer_capability = 0;
12327 u16 status_code;
12328 u8 *peer;
12329 int link_id;
12330 bool initiator;
12331
12332 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12333 !rdev->ops->tdls_mgmt)
12334 return -EOPNOTSUPP;
12335
12336 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12337 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12338 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12339 !info->attrs[NL80211_ATTR_IE] ||
12340 !info->attrs[NL80211_ATTR_MAC])
12341 return -EINVAL;
12342
12343 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12344 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12345 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12346 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12347 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12348 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12349 peer_capability =
12350 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12351 link_id = nl80211_link_id_or_invalid(info->attrs);
12352
12353 return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code,
12354 dialog_token, status_code, peer_capability,
12355 initiator,
12356 nla_data(info->attrs[NL80211_ATTR_IE]),
12357 nla_len(info->attrs[NL80211_ATTR_IE]));
12358 }
12359
nl80211_tdls_oper(struct sk_buff * skb,struct genl_info * info)12360 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12361 {
12362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12363 struct net_device *dev = info->user_ptr[1];
12364 enum nl80211_tdls_operation operation;
12365 u8 *peer;
12366
12367 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12368 !rdev->ops->tdls_oper)
12369 return -EOPNOTSUPP;
12370
12371 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12372 !info->attrs[NL80211_ATTR_MAC])
12373 return -EINVAL;
12374
12375 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12376 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12377
12378 return rdev_tdls_oper(rdev, dev, peer, operation);
12379 }
12380
nl80211_remain_on_channel(struct sk_buff * skb,struct genl_info * info)12381 static int nl80211_remain_on_channel(struct sk_buff *skb,
12382 struct genl_info *info)
12383 {
12384 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12385 unsigned int link_id = nl80211_link_id(info->attrs);
12386 struct wireless_dev *wdev = info->user_ptr[1];
12387 struct cfg80211_chan_def chandef;
12388 struct sk_buff *msg;
12389 void *hdr;
12390 u64 cookie;
12391 u32 duration;
12392 int err;
12393
12394 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12395 !info->attrs[NL80211_ATTR_DURATION])
12396 return -EINVAL;
12397
12398 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12399
12400 if (!rdev->ops->remain_on_channel ||
12401 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12402 return -EOPNOTSUPP;
12403
12404 /*
12405 * We should be on that channel for at least a minimum amount of
12406 * time (10ms) but no longer than the driver supports.
12407 */
12408 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12409 duration > rdev->wiphy.max_remain_on_channel_duration)
12410 return -EINVAL;
12411
12412 err = nl80211_parse_chandef(rdev, info, &chandef);
12413 if (err)
12414 return err;
12415
12416 wdev_lock(wdev);
12417 if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12418 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12419
12420 oper_chandef = wdev_chandef(wdev, link_id);
12421
12422 if (WARN_ON(!oper_chandef)) {
12423 /* cannot happen since we must beacon to get here */
12424 WARN_ON(1);
12425 wdev_unlock(wdev);
12426 return -EBUSY;
12427 }
12428
12429 /* note: returns first one if identical chandefs */
12430 compat_chandef = cfg80211_chandef_compatible(&chandef,
12431 oper_chandef);
12432
12433 if (compat_chandef != &chandef) {
12434 wdev_unlock(wdev);
12435 return -EBUSY;
12436 }
12437 }
12438 wdev_unlock(wdev);
12439
12440 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12441 if (!msg)
12442 return -ENOMEM;
12443
12444 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12445 NL80211_CMD_REMAIN_ON_CHANNEL);
12446 if (!hdr) {
12447 err = -ENOBUFS;
12448 goto free_msg;
12449 }
12450
12451 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12452 duration, &cookie);
12453
12454 if (err)
12455 goto free_msg;
12456
12457 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12458 NL80211_ATTR_PAD))
12459 goto nla_put_failure;
12460
12461 genlmsg_end(msg, hdr);
12462
12463 return genlmsg_reply(msg, info);
12464
12465 nla_put_failure:
12466 err = -ENOBUFS;
12467 free_msg:
12468 nlmsg_free(msg);
12469 return err;
12470 }
12471
nl80211_cancel_remain_on_channel(struct sk_buff * skb,struct genl_info * info)12472 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12473 struct genl_info *info)
12474 {
12475 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12476 struct wireless_dev *wdev = info->user_ptr[1];
12477 u64 cookie;
12478
12479 if (!info->attrs[NL80211_ATTR_COOKIE])
12480 return -EINVAL;
12481
12482 if (!rdev->ops->cancel_remain_on_channel)
12483 return -EOPNOTSUPP;
12484
12485 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12486
12487 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12488 }
12489
nl80211_set_tx_bitrate_mask(struct sk_buff * skb,struct genl_info * info)12490 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12491 struct genl_info *info)
12492 {
12493 struct cfg80211_bitrate_mask mask;
12494 unsigned int link_id = nl80211_link_id(info->attrs);
12495 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12496 struct net_device *dev = info->user_ptr[1];
12497 struct wireless_dev *wdev = dev->ieee80211_ptr;
12498 int err;
12499
12500 if (!rdev->ops->set_bitrate_mask)
12501 return -EOPNOTSUPP;
12502
12503 wdev_lock(wdev);
12504 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12505 NL80211_ATTR_TX_RATES, &mask,
12506 dev, true, link_id);
12507 if (err)
12508 goto out;
12509
12510 err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12511 out:
12512 wdev_unlock(wdev);
12513 return err;
12514 }
12515
nl80211_register_mgmt(struct sk_buff * skb,struct genl_info * info)12516 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12517 {
12518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12519 struct wireless_dev *wdev = info->user_ptr[1];
12520 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12521
12522 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12523 return -EINVAL;
12524
12525 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12526 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12527
12528 switch (wdev->iftype) {
12529 case NL80211_IFTYPE_STATION:
12530 case NL80211_IFTYPE_ADHOC:
12531 case NL80211_IFTYPE_P2P_CLIENT:
12532 case NL80211_IFTYPE_AP:
12533 case NL80211_IFTYPE_AP_VLAN:
12534 case NL80211_IFTYPE_MESH_POINT:
12535 case NL80211_IFTYPE_P2P_GO:
12536 case NL80211_IFTYPE_P2P_DEVICE:
12537 break;
12538 case NL80211_IFTYPE_NAN:
12539 if (!wiphy_ext_feature_isset(wdev->wiphy,
12540 NL80211_EXT_FEATURE_SECURE_NAN))
12541 return -EOPNOTSUPP;
12542 break;
12543 default:
12544 return -EOPNOTSUPP;
12545 }
12546
12547 /* not much point in registering if we can't reply */
12548 if (!rdev->ops->mgmt_tx)
12549 return -EOPNOTSUPP;
12550
12551 if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12552 !wiphy_ext_feature_isset(&rdev->wiphy,
12553 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12554 GENL_SET_ERR_MSG(info,
12555 "multicast RX registrations are not supported");
12556 return -EOPNOTSUPP;
12557 }
12558
12559 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12560 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12561 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12562 info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12563 info->extack);
12564 }
12565
nl80211_tx_mgmt(struct sk_buff * skb,struct genl_info * info)12566 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12567 {
12568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12569 struct wireless_dev *wdev = info->user_ptr[1];
12570 struct cfg80211_chan_def chandef;
12571 int err;
12572 void *hdr = NULL;
12573 u64 cookie;
12574 struct sk_buff *msg = NULL;
12575 struct cfg80211_mgmt_tx_params params = {
12576 .dont_wait_for_ack =
12577 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12578 };
12579
12580 if (!info->attrs[NL80211_ATTR_FRAME])
12581 return -EINVAL;
12582
12583 if (!rdev->ops->mgmt_tx)
12584 return -EOPNOTSUPP;
12585
12586 switch (wdev->iftype) {
12587 case NL80211_IFTYPE_P2P_DEVICE:
12588 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12589 return -EINVAL;
12590 break;
12591 case NL80211_IFTYPE_STATION:
12592 case NL80211_IFTYPE_ADHOC:
12593 case NL80211_IFTYPE_P2P_CLIENT:
12594 case NL80211_IFTYPE_AP:
12595 case NL80211_IFTYPE_AP_VLAN:
12596 case NL80211_IFTYPE_MESH_POINT:
12597 case NL80211_IFTYPE_P2P_GO:
12598 break;
12599 case NL80211_IFTYPE_NAN:
12600 if (!wiphy_ext_feature_isset(wdev->wiphy,
12601 NL80211_EXT_FEATURE_SECURE_NAN))
12602 return -EOPNOTSUPP;
12603 break;
12604 default:
12605 return -EOPNOTSUPP;
12606 }
12607
12608 if (info->attrs[NL80211_ATTR_DURATION]) {
12609 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12610 return -EINVAL;
12611 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12612
12613 /*
12614 * We should wait on the channel for at least a minimum amount
12615 * of time (10ms) but no longer than the driver supports.
12616 */
12617 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12618 params.wait > rdev->wiphy.max_remain_on_channel_duration)
12619 return -EINVAL;
12620 }
12621
12622 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12623
12624 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12625 return -EINVAL;
12626
12627 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12628
12629 /* get the channel if any has been specified, otherwise pass NULL to
12630 * the driver. The latter will use the current one
12631 */
12632 chandef.chan = NULL;
12633 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12634 err = nl80211_parse_chandef(rdev, info, &chandef);
12635 if (err)
12636 return err;
12637 }
12638
12639 if (!chandef.chan && params.offchan)
12640 return -EINVAL;
12641
12642 wdev_lock(wdev);
12643 if (params.offchan &&
12644 !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12645 wdev_unlock(wdev);
12646 return -EBUSY;
12647 }
12648
12649 params.link_id = nl80211_link_id_or_invalid(info->attrs);
12650 /*
12651 * This now races due to the unlock, but we cannot check
12652 * the valid links for the _station_ anyway, so that's up
12653 * to the driver.
12654 */
12655 if (params.link_id >= 0 &&
12656 !(wdev->valid_links & BIT(params.link_id))) {
12657 wdev_unlock(wdev);
12658 return -EINVAL;
12659 }
12660 wdev_unlock(wdev);
12661
12662 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12663 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12664
12665 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12666 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12667 int i;
12668
12669 if (len % sizeof(u16))
12670 return -EINVAL;
12671
12672 params.n_csa_offsets = len / sizeof(u16);
12673 params.csa_offsets =
12674 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12675
12676 /* check that all the offsets fit the frame */
12677 for (i = 0; i < params.n_csa_offsets; i++) {
12678 if (params.csa_offsets[i] >= params.len)
12679 return -EINVAL;
12680 }
12681 }
12682
12683 if (!params.dont_wait_for_ack) {
12684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12685 if (!msg)
12686 return -ENOMEM;
12687
12688 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12689 NL80211_CMD_FRAME);
12690 if (!hdr) {
12691 err = -ENOBUFS;
12692 goto free_msg;
12693 }
12694 }
12695
12696 params.chan = chandef.chan;
12697 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie);
12698 if (err)
12699 goto free_msg;
12700
12701 if (msg) {
12702 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12703 NL80211_ATTR_PAD))
12704 goto nla_put_failure;
12705
12706 genlmsg_end(msg, hdr);
12707 return genlmsg_reply(msg, info);
12708 }
12709
12710 return 0;
12711
12712 nla_put_failure:
12713 err = -ENOBUFS;
12714 free_msg:
12715 nlmsg_free(msg);
12716 return err;
12717 }
12718
nl80211_tx_mgmt_cancel_wait(struct sk_buff * skb,struct genl_info * info)12719 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12720 {
12721 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12722 struct wireless_dev *wdev = info->user_ptr[1];
12723 u64 cookie;
12724
12725 if (!info->attrs[NL80211_ATTR_COOKIE])
12726 return -EINVAL;
12727
12728 if (!rdev->ops->mgmt_tx_cancel_wait)
12729 return -EOPNOTSUPP;
12730
12731 switch (wdev->iftype) {
12732 case NL80211_IFTYPE_STATION:
12733 case NL80211_IFTYPE_ADHOC:
12734 case NL80211_IFTYPE_P2P_CLIENT:
12735 case NL80211_IFTYPE_AP:
12736 case NL80211_IFTYPE_AP_VLAN:
12737 case NL80211_IFTYPE_P2P_GO:
12738 case NL80211_IFTYPE_P2P_DEVICE:
12739 break;
12740 case NL80211_IFTYPE_NAN:
12741 if (!wiphy_ext_feature_isset(wdev->wiphy,
12742 NL80211_EXT_FEATURE_SECURE_NAN))
12743 return -EOPNOTSUPP;
12744 break;
12745 default:
12746 return -EOPNOTSUPP;
12747 }
12748
12749 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12750
12751 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12752 }
12753
nl80211_set_power_save(struct sk_buff * skb,struct genl_info * info)12754 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12755 {
12756 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12757 struct wireless_dev *wdev;
12758 struct net_device *dev = info->user_ptr[1];
12759 u8 ps_state;
12760 bool state;
12761 int err;
12762
12763 if (!info->attrs[NL80211_ATTR_PS_STATE])
12764 return -EINVAL;
12765
12766 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12767
12768 wdev = dev->ieee80211_ptr;
12769
12770 if (!rdev->ops->set_power_mgmt)
12771 return -EOPNOTSUPP;
12772
12773 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12774
12775 if (state == wdev->ps)
12776 return 0;
12777
12778 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12779 if (!err)
12780 wdev->ps = state;
12781 return err;
12782 }
12783
nl80211_get_power_save(struct sk_buff * skb,struct genl_info * info)12784 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12785 {
12786 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12787 enum nl80211_ps_state ps_state;
12788 struct wireless_dev *wdev;
12789 struct net_device *dev = info->user_ptr[1];
12790 struct sk_buff *msg;
12791 void *hdr;
12792 int err;
12793
12794 wdev = dev->ieee80211_ptr;
12795
12796 if (!rdev->ops->set_power_mgmt)
12797 return -EOPNOTSUPP;
12798
12799 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12800 if (!msg)
12801 return -ENOMEM;
12802
12803 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12804 NL80211_CMD_GET_POWER_SAVE);
12805 if (!hdr) {
12806 err = -ENOBUFS;
12807 goto free_msg;
12808 }
12809
12810 if (wdev->ps)
12811 ps_state = NL80211_PS_ENABLED;
12812 else
12813 ps_state = NL80211_PS_DISABLED;
12814
12815 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12816 goto nla_put_failure;
12817
12818 genlmsg_end(msg, hdr);
12819 return genlmsg_reply(msg, info);
12820
12821 nla_put_failure:
12822 err = -ENOBUFS;
12823 free_msg:
12824 nlmsg_free(msg);
12825 return err;
12826 }
12827
12828 static const struct nla_policy
12829 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12830 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12831 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12832 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12833 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12834 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12835 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12836 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12837 };
12838
nl80211_set_cqm_txe(struct genl_info * info,u32 rate,u32 pkts,u32 intvl)12839 static int nl80211_set_cqm_txe(struct genl_info *info,
12840 u32 rate, u32 pkts, u32 intvl)
12841 {
12842 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12843 struct net_device *dev = info->user_ptr[1];
12844 struct wireless_dev *wdev = dev->ieee80211_ptr;
12845
12846 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12847 return -EINVAL;
12848
12849 if (!rdev->ops->set_cqm_txe_config)
12850 return -EOPNOTSUPP;
12851
12852 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12853 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12854 return -EOPNOTSUPP;
12855
12856 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12857 }
12858
cfg80211_cqm_rssi_update(struct cfg80211_registered_device * rdev,struct net_device * dev,struct cfg80211_cqm_config * cqm_config)12859 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12860 struct net_device *dev,
12861 struct cfg80211_cqm_config *cqm_config)
12862 {
12863 struct wireless_dev *wdev = dev->ieee80211_ptr;
12864 s32 last, low, high;
12865 u32 hyst;
12866 int i, n, low_index;
12867 int err;
12868
12869 /*
12870 * Obtain current RSSI value if possible, if not and no RSSI threshold
12871 * event has been received yet, we should receive an event after a
12872 * connection is established and enough beacons received to calculate
12873 * the average.
12874 */
12875 if (!cqm_config->last_rssi_event_value &&
12876 wdev->links[0].client.current_bss &&
12877 rdev->ops->get_station) {
12878 struct station_info sinfo = {};
12879 u8 *mac_addr;
12880
12881 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12882
12883 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12884 if (err)
12885 return err;
12886
12887 cfg80211_sinfo_release_content(&sinfo);
12888 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12889 cqm_config->last_rssi_event_value =
12890 (s8) sinfo.rx_beacon_signal_avg;
12891 }
12892
12893 last = cqm_config->last_rssi_event_value;
12894 hyst = cqm_config->rssi_hyst;
12895 n = cqm_config->n_rssi_thresholds;
12896
12897 for (i = 0; i < n; i++) {
12898 i = array_index_nospec(i, n);
12899 if (last < cqm_config->rssi_thresholds[i])
12900 break;
12901 }
12902
12903 low_index = i - 1;
12904 if (low_index >= 0) {
12905 low_index = array_index_nospec(low_index, n);
12906 low = cqm_config->rssi_thresholds[low_index] - hyst;
12907 } else {
12908 low = S32_MIN;
12909 }
12910 if (i < n) {
12911 i = array_index_nospec(i, n);
12912 high = cqm_config->rssi_thresholds[i] + hyst - 1;
12913 } else {
12914 high = S32_MAX;
12915 }
12916
12917 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12918 }
12919
nl80211_set_cqm_rssi(struct genl_info * info,const s32 * thresholds,int n_thresholds,u32 hysteresis)12920 static int nl80211_set_cqm_rssi(struct genl_info *info,
12921 const s32 *thresholds, int n_thresholds,
12922 u32 hysteresis)
12923 {
12924 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12925 struct cfg80211_cqm_config *cqm_config = NULL, *old;
12926 struct net_device *dev = info->user_ptr[1];
12927 struct wireless_dev *wdev = dev->ieee80211_ptr;
12928 int i, err;
12929 s32 prev = S32_MIN;
12930
12931 /* Check all values negative and sorted */
12932 for (i = 0; i < n_thresholds; i++) {
12933 if (thresholds[i] > 0 || thresholds[i] <= prev)
12934 return -EINVAL;
12935
12936 prev = thresholds[i];
12937 }
12938
12939 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12940 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12941 return -EOPNOTSUPP;
12942
12943 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12944 n_thresholds = 0;
12945
12946 wdev_lock(wdev);
12947 old = rcu_dereference_protected(wdev->cqm_config,
12948 lockdep_is_held(&wdev->mtx));
12949
12950 /* if already disabled just succeed */
12951 if (!n_thresholds && !old) {
12952 err = 0;
12953 goto unlock;
12954 }
12955
12956 if (n_thresholds > 1) {
12957 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12958 NL80211_EXT_FEATURE_CQM_RSSI_LIST) ||
12959 !rdev->ops->set_cqm_rssi_range_config) {
12960 err = -EOPNOTSUPP;
12961 goto unlock;
12962 }
12963 } else {
12964 if (!rdev->ops->set_cqm_rssi_config) {
12965 err = -EOPNOTSUPP;
12966 goto unlock;
12967 }
12968 }
12969
12970 if (n_thresholds) {
12971 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12972 n_thresholds),
12973 GFP_KERNEL);
12974 if (!cqm_config) {
12975 err = -ENOMEM;
12976 goto unlock;
12977 }
12978
12979 cqm_config->rssi_hyst = hysteresis;
12980 cqm_config->n_rssi_thresholds = n_thresholds;
12981 memcpy(cqm_config->rssi_thresholds, thresholds,
12982 flex_array_size(cqm_config, rssi_thresholds,
12983 n_thresholds));
12984 cqm_config->use_range_api = n_thresholds > 1 ||
12985 !rdev->ops->set_cqm_rssi_config;
12986
12987 rcu_assign_pointer(wdev->cqm_config, cqm_config);
12988
12989 if (cqm_config->use_range_api)
12990 err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config);
12991 else
12992 err = rdev_set_cqm_rssi_config(rdev, dev,
12993 thresholds[0],
12994 hysteresis);
12995 } else {
12996 RCU_INIT_POINTER(wdev->cqm_config, NULL);
12997 /* if enabled as range also disable via range */
12998 if (old->use_range_api)
12999 err = rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
13000 else
13001 err = rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
13002 }
13003
13004 if (err) {
13005 rcu_assign_pointer(wdev->cqm_config, old);
13006 kfree_rcu(cqm_config, rcu_head);
13007 } else {
13008 kfree_rcu(old, rcu_head);
13009 }
13010 unlock:
13011 wdev_unlock(wdev);
13012
13013 return err;
13014 }
13015
nl80211_set_cqm(struct sk_buff * skb,struct genl_info * info)13016 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
13017 {
13018 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
13019 struct nlattr *cqm;
13020 int err;
13021
13022 cqm = info->attrs[NL80211_ATTR_CQM];
13023 if (!cqm)
13024 return -EINVAL;
13025
13026 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
13027 nl80211_attr_cqm_policy,
13028 info->extack);
13029 if (err)
13030 return err;
13031
13032 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
13033 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
13034 const s32 *thresholds =
13035 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
13036 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
13037 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
13038
13039 if (len % 4)
13040 return -EINVAL;
13041
13042 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
13043 hysteresis);
13044 }
13045
13046 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
13047 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
13048 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
13049 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
13050 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
13051 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
13052
13053 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
13054 }
13055
13056 return -EINVAL;
13057 }
13058
nl80211_join_ocb(struct sk_buff * skb,struct genl_info * info)13059 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
13060 {
13061 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13062 struct net_device *dev = info->user_ptr[1];
13063 struct ocb_setup setup = {};
13064 int err;
13065
13066 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13067 if (err)
13068 return err;
13069
13070 return cfg80211_join_ocb(rdev, dev, &setup);
13071 }
13072
nl80211_leave_ocb(struct sk_buff * skb,struct genl_info * info)13073 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
13074 {
13075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13076 struct net_device *dev = info->user_ptr[1];
13077
13078 return cfg80211_leave_ocb(rdev, dev);
13079 }
13080
nl80211_join_mesh(struct sk_buff * skb,struct genl_info * info)13081 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
13082 {
13083 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13084 struct net_device *dev = info->user_ptr[1];
13085 struct mesh_config cfg;
13086 struct mesh_setup setup;
13087 int err;
13088
13089 /* start with default */
13090 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
13091 memcpy(&setup, &default_mesh_setup, sizeof(setup));
13092
13093 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
13094 /* and parse parameters if given */
13095 err = nl80211_parse_mesh_config(info, &cfg, NULL);
13096 if (err)
13097 return err;
13098 }
13099
13100 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
13101 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
13102 return -EINVAL;
13103
13104 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
13105 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
13106
13107 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
13108 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
13109 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
13110 return -EINVAL;
13111
13112 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
13113 setup.beacon_interval =
13114 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
13115
13116 err = cfg80211_validate_beacon_int(rdev,
13117 NL80211_IFTYPE_MESH_POINT,
13118 setup.beacon_interval);
13119 if (err)
13120 return err;
13121 }
13122
13123 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
13124 setup.dtim_period =
13125 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
13126 if (setup.dtim_period < 1 || setup.dtim_period > 100)
13127 return -EINVAL;
13128 }
13129
13130 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
13131 /* parse additional setup parameters if given */
13132 err = nl80211_parse_mesh_setup(info, &setup);
13133 if (err)
13134 return err;
13135 }
13136
13137 if (setup.user_mpm)
13138 cfg.auto_open_plinks = false;
13139
13140 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
13141 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13142 if (err)
13143 return err;
13144 } else {
13145 /* __cfg80211_join_mesh() will sort it out */
13146 setup.chandef.chan = NULL;
13147 }
13148
13149 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
13150 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13151 int n_rates =
13152 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13153 struct ieee80211_supported_band *sband;
13154
13155 if (!setup.chandef.chan)
13156 return -EINVAL;
13157
13158 sband = rdev->wiphy.bands[setup.chandef.chan->band];
13159
13160 err = ieee80211_get_ratemask(sband, rates, n_rates,
13161 &setup.basic_rates);
13162 if (err)
13163 return err;
13164 }
13165
13166 if (info->attrs[NL80211_ATTR_TX_RATES]) {
13167 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
13168 NL80211_ATTR_TX_RATES,
13169 &setup.beacon_rate,
13170 dev, false, 0);
13171 if (err)
13172 return err;
13173
13174 if (!setup.chandef.chan)
13175 return -EINVAL;
13176
13177 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
13178 &setup.beacon_rate);
13179 if (err)
13180 return err;
13181 }
13182
13183 setup.userspace_handles_dfs =
13184 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
13185
13186 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
13187 int r = validate_pae_over_nl80211(rdev, info);
13188
13189 if (r < 0)
13190 return r;
13191
13192 setup.control_port_over_nl80211 = true;
13193 }
13194
13195 wdev_lock(dev->ieee80211_ptr);
13196 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
13197 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
13198 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
13199 wdev_unlock(dev->ieee80211_ptr);
13200
13201 return err;
13202 }
13203
nl80211_leave_mesh(struct sk_buff * skb,struct genl_info * info)13204 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
13205 {
13206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13207 struct net_device *dev = info->user_ptr[1];
13208
13209 return cfg80211_leave_mesh(rdev, dev);
13210 }
13211
13212 #ifdef CONFIG_PM
nl80211_send_wowlan_patterns(struct sk_buff * msg,struct cfg80211_registered_device * rdev)13213 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
13214 struct cfg80211_registered_device *rdev)
13215 {
13216 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
13217 struct nlattr *nl_pats, *nl_pat;
13218 int i, pat_len;
13219
13220 if (!wowlan->n_patterns)
13221 return 0;
13222
13223 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
13224 if (!nl_pats)
13225 return -ENOBUFS;
13226
13227 for (i = 0; i < wowlan->n_patterns; i++) {
13228 nl_pat = nla_nest_start_noflag(msg, i + 1);
13229 if (!nl_pat)
13230 return -ENOBUFS;
13231 pat_len = wowlan->patterns[i].pattern_len;
13232 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
13233 wowlan->patterns[i].mask) ||
13234 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13235 wowlan->patterns[i].pattern) ||
13236 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13237 wowlan->patterns[i].pkt_offset))
13238 return -ENOBUFS;
13239 nla_nest_end(msg, nl_pat);
13240 }
13241 nla_nest_end(msg, nl_pats);
13242
13243 return 0;
13244 }
13245
nl80211_send_wowlan_tcp(struct sk_buff * msg,struct cfg80211_wowlan_tcp * tcp)13246 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
13247 struct cfg80211_wowlan_tcp *tcp)
13248 {
13249 struct nlattr *nl_tcp;
13250
13251 if (!tcp)
13252 return 0;
13253
13254 nl_tcp = nla_nest_start_noflag(msg,
13255 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
13256 if (!nl_tcp)
13257 return -ENOBUFS;
13258
13259 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
13260 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
13261 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
13262 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
13263 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
13264 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
13265 tcp->payload_len, tcp->payload) ||
13266 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
13267 tcp->data_interval) ||
13268 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
13269 tcp->wake_len, tcp->wake_data) ||
13270 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
13271 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
13272 return -ENOBUFS;
13273
13274 if (tcp->payload_seq.len &&
13275 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
13276 sizeof(tcp->payload_seq), &tcp->payload_seq))
13277 return -ENOBUFS;
13278
13279 if (tcp->payload_tok.len &&
13280 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
13281 sizeof(tcp->payload_tok) + tcp->tokens_size,
13282 &tcp->payload_tok))
13283 return -ENOBUFS;
13284
13285 nla_nest_end(msg, nl_tcp);
13286
13287 return 0;
13288 }
13289
nl80211_send_wowlan_nd(struct sk_buff * msg,struct cfg80211_sched_scan_request * req)13290 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
13291 struct cfg80211_sched_scan_request *req)
13292 {
13293 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
13294 int i;
13295
13296 if (!req)
13297 return 0;
13298
13299 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
13300 if (!nd)
13301 return -ENOBUFS;
13302
13303 if (req->n_scan_plans == 1 &&
13304 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
13305 req->scan_plans[0].interval * 1000))
13306 return -ENOBUFS;
13307
13308 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
13309 return -ENOBUFS;
13310
13311 if (req->relative_rssi_set) {
13312 struct nl80211_bss_select_rssi_adjust rssi_adjust;
13313
13314 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
13315 req->relative_rssi))
13316 return -ENOBUFS;
13317
13318 rssi_adjust.band = req->rssi_adjust.band;
13319 rssi_adjust.delta = req->rssi_adjust.delta;
13320 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13321 sizeof(rssi_adjust), &rssi_adjust))
13322 return -ENOBUFS;
13323 }
13324
13325 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13326 if (!freqs)
13327 return -ENOBUFS;
13328
13329 for (i = 0; i < req->n_channels; i++) {
13330 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13331 return -ENOBUFS;
13332 }
13333
13334 nla_nest_end(msg, freqs);
13335
13336 if (req->n_match_sets) {
13337 matches = nla_nest_start_noflag(msg,
13338 NL80211_ATTR_SCHED_SCAN_MATCH);
13339 if (!matches)
13340 return -ENOBUFS;
13341
13342 for (i = 0; i < req->n_match_sets; i++) {
13343 match = nla_nest_start_noflag(msg, i);
13344 if (!match)
13345 return -ENOBUFS;
13346
13347 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13348 req->match_sets[i].ssid.ssid_len,
13349 req->match_sets[i].ssid.ssid))
13350 return -ENOBUFS;
13351 nla_nest_end(msg, match);
13352 }
13353 nla_nest_end(msg, matches);
13354 }
13355
13356 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13357 if (!scan_plans)
13358 return -ENOBUFS;
13359
13360 for (i = 0; i < req->n_scan_plans; i++) {
13361 scan_plan = nla_nest_start_noflag(msg, i + 1);
13362 if (!scan_plan)
13363 return -ENOBUFS;
13364
13365 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13366 req->scan_plans[i].interval) ||
13367 (req->scan_plans[i].iterations &&
13368 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13369 req->scan_plans[i].iterations)))
13370 return -ENOBUFS;
13371 nla_nest_end(msg, scan_plan);
13372 }
13373 nla_nest_end(msg, scan_plans);
13374
13375 nla_nest_end(msg, nd);
13376
13377 return 0;
13378 }
13379
nl80211_get_wowlan(struct sk_buff * skb,struct genl_info * info)13380 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13381 {
13382 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13383 struct sk_buff *msg;
13384 void *hdr;
13385 u32 size = NLMSG_DEFAULT_SIZE;
13386
13387 if (!rdev->wiphy.wowlan)
13388 return -EOPNOTSUPP;
13389
13390 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13391 /* adjust size to have room for all the data */
13392 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13393 rdev->wiphy.wowlan_config->tcp->payload_len +
13394 rdev->wiphy.wowlan_config->tcp->wake_len +
13395 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13396 }
13397
13398 msg = nlmsg_new(size, GFP_KERNEL);
13399 if (!msg)
13400 return -ENOMEM;
13401
13402 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13403 NL80211_CMD_GET_WOWLAN);
13404 if (!hdr)
13405 goto nla_put_failure;
13406
13407 if (rdev->wiphy.wowlan_config) {
13408 struct nlattr *nl_wowlan;
13409
13410 nl_wowlan = nla_nest_start_noflag(msg,
13411 NL80211_ATTR_WOWLAN_TRIGGERS);
13412 if (!nl_wowlan)
13413 goto nla_put_failure;
13414
13415 if ((rdev->wiphy.wowlan_config->any &&
13416 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13417 (rdev->wiphy.wowlan_config->disconnect &&
13418 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13419 (rdev->wiphy.wowlan_config->magic_pkt &&
13420 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13421 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13422 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13423 (rdev->wiphy.wowlan_config->eap_identity_req &&
13424 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13425 (rdev->wiphy.wowlan_config->four_way_handshake &&
13426 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13427 (rdev->wiphy.wowlan_config->rfkill_release &&
13428 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13429 goto nla_put_failure;
13430
13431 if (nl80211_send_wowlan_patterns(msg, rdev))
13432 goto nla_put_failure;
13433
13434 if (nl80211_send_wowlan_tcp(msg,
13435 rdev->wiphy.wowlan_config->tcp))
13436 goto nla_put_failure;
13437
13438 if (nl80211_send_wowlan_nd(
13439 msg,
13440 rdev->wiphy.wowlan_config->nd_config))
13441 goto nla_put_failure;
13442
13443 nla_nest_end(msg, nl_wowlan);
13444 }
13445
13446 genlmsg_end(msg, hdr);
13447 return genlmsg_reply(msg, info);
13448
13449 nla_put_failure:
13450 nlmsg_free(msg);
13451 return -ENOBUFS;
13452 }
13453
nl80211_parse_wowlan_tcp(struct cfg80211_registered_device * rdev,struct nlattr * attr,struct cfg80211_wowlan * trig)13454 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13455 struct nlattr *attr,
13456 struct cfg80211_wowlan *trig)
13457 {
13458 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13459 struct cfg80211_wowlan_tcp *cfg;
13460 struct nl80211_wowlan_tcp_data_token *tok = NULL;
13461 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13462 u32 size;
13463 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13464 int err, port;
13465
13466 if (!rdev->wiphy.wowlan->tcp)
13467 return -EINVAL;
13468
13469 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13470 nl80211_wowlan_tcp_policy, NULL);
13471 if (err)
13472 return err;
13473
13474 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13475 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13476 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13477 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13478 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13479 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13480 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13481 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13482 return -EINVAL;
13483
13484 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13485 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13486 return -EINVAL;
13487
13488 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13489 rdev->wiphy.wowlan->tcp->data_interval_max ||
13490 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13491 return -EINVAL;
13492
13493 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13494 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13495 return -EINVAL;
13496
13497 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13498 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13499 return -EINVAL;
13500
13501 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13502 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13503
13504 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13505 tokens_size = tokln - sizeof(*tok);
13506
13507 if (!tok->len || tokens_size % tok->len)
13508 return -EINVAL;
13509 if (!rdev->wiphy.wowlan->tcp->tok)
13510 return -EINVAL;
13511 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13512 return -EINVAL;
13513 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13514 return -EINVAL;
13515 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13516 return -EINVAL;
13517 if (tok->offset + tok->len > data_size)
13518 return -EINVAL;
13519 }
13520
13521 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13522 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13523 if (!rdev->wiphy.wowlan->tcp->seq)
13524 return -EINVAL;
13525 if (seq->len == 0 || seq->len > 4)
13526 return -EINVAL;
13527 if (seq->len + seq->offset > data_size)
13528 return -EINVAL;
13529 }
13530
13531 size = sizeof(*cfg);
13532 size += data_size;
13533 size += wake_size + wake_mask_size;
13534 size += tokens_size;
13535
13536 cfg = kzalloc(size, GFP_KERNEL);
13537 if (!cfg)
13538 return -ENOMEM;
13539 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13540 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13541 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13542 ETH_ALEN);
13543 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13544 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13545 else
13546 port = 0;
13547 #ifdef CONFIG_INET
13548 /* allocate a socket and port for it and use it */
13549 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13550 IPPROTO_TCP, &cfg->sock, 1);
13551 if (err) {
13552 kfree(cfg);
13553 return err;
13554 }
13555 if (inet_csk_get_port(cfg->sock->sk, port)) {
13556 sock_release(cfg->sock);
13557 kfree(cfg);
13558 return -EADDRINUSE;
13559 }
13560 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13561 #else
13562 if (!port) {
13563 kfree(cfg);
13564 return -EINVAL;
13565 }
13566 cfg->src_port = port;
13567 #endif
13568
13569 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13570 cfg->payload_len = data_size;
13571 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13572 memcpy((void *)cfg->payload,
13573 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13574 data_size);
13575 if (seq)
13576 cfg->payload_seq = *seq;
13577 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13578 cfg->wake_len = wake_size;
13579 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13580 memcpy((void *)cfg->wake_data,
13581 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13582 wake_size);
13583 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13584 data_size + wake_size;
13585 memcpy((void *)cfg->wake_mask,
13586 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13587 wake_mask_size);
13588 if (tok) {
13589 cfg->tokens_size = tokens_size;
13590 cfg->payload_tok = *tok;
13591 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13592 tokens_size);
13593 }
13594
13595 trig->tcp = cfg;
13596
13597 return 0;
13598 }
13599
nl80211_parse_wowlan_nd(struct cfg80211_registered_device * rdev,const struct wiphy_wowlan_support * wowlan,struct nlattr * attr,struct cfg80211_wowlan * trig)13600 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13601 const struct wiphy_wowlan_support *wowlan,
13602 struct nlattr *attr,
13603 struct cfg80211_wowlan *trig)
13604 {
13605 struct nlattr **tb;
13606 int err;
13607
13608 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13609 if (!tb)
13610 return -ENOMEM;
13611
13612 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13613 err = -EOPNOTSUPP;
13614 goto out;
13615 }
13616
13617 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13618 nl80211_policy, NULL);
13619 if (err)
13620 goto out;
13621
13622 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13623 wowlan->max_nd_match_sets);
13624 err = PTR_ERR_OR_ZERO(trig->nd_config);
13625 if (err)
13626 trig->nd_config = NULL;
13627
13628 out:
13629 kfree(tb);
13630 return err;
13631 }
13632
nl80211_set_wowlan(struct sk_buff * skb,struct genl_info * info)13633 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13634 {
13635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13636 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13637 struct cfg80211_wowlan new_triggers = {};
13638 struct cfg80211_wowlan *ntrig;
13639 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13640 int err, i;
13641 bool prev_enabled = rdev->wiphy.wowlan_config;
13642 bool regular = false;
13643
13644 if (!wowlan)
13645 return -EOPNOTSUPP;
13646
13647 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13648 cfg80211_rdev_free_wowlan(rdev);
13649 rdev->wiphy.wowlan_config = NULL;
13650 goto set_wakeup;
13651 }
13652
13653 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13654 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13655 nl80211_wowlan_policy, info->extack);
13656 if (err)
13657 return err;
13658
13659 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13660 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13661 return -EINVAL;
13662 new_triggers.any = true;
13663 }
13664
13665 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13666 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13667 return -EINVAL;
13668 new_triggers.disconnect = true;
13669 regular = true;
13670 }
13671
13672 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13673 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13674 return -EINVAL;
13675 new_triggers.magic_pkt = true;
13676 regular = true;
13677 }
13678
13679 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13680 return -EINVAL;
13681
13682 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13683 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13684 return -EINVAL;
13685 new_triggers.gtk_rekey_failure = true;
13686 regular = true;
13687 }
13688
13689 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13690 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13691 return -EINVAL;
13692 new_triggers.eap_identity_req = true;
13693 regular = true;
13694 }
13695
13696 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13697 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13698 return -EINVAL;
13699 new_triggers.four_way_handshake = true;
13700 regular = true;
13701 }
13702
13703 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13704 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13705 return -EINVAL;
13706 new_triggers.rfkill_release = true;
13707 regular = true;
13708 }
13709
13710 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13711 struct nlattr *pat;
13712 int n_patterns = 0;
13713 int rem, pat_len, mask_len, pkt_offset;
13714 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13715
13716 regular = true;
13717
13718 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13719 rem)
13720 n_patterns++;
13721 if (n_patterns > wowlan->n_patterns)
13722 return -EINVAL;
13723
13724 new_triggers.patterns = kcalloc(n_patterns,
13725 sizeof(new_triggers.patterns[0]),
13726 GFP_KERNEL);
13727 if (!new_triggers.patterns)
13728 return -ENOMEM;
13729
13730 new_triggers.n_patterns = n_patterns;
13731 i = 0;
13732
13733 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13734 rem) {
13735 u8 *mask_pat;
13736
13737 err = nla_parse_nested_deprecated(pat_tb,
13738 MAX_NL80211_PKTPAT,
13739 pat,
13740 nl80211_packet_pattern_policy,
13741 info->extack);
13742 if (err)
13743 goto error;
13744
13745 err = -EINVAL;
13746 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13747 !pat_tb[NL80211_PKTPAT_PATTERN])
13748 goto error;
13749 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13750 mask_len = DIV_ROUND_UP(pat_len, 8);
13751 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13752 goto error;
13753 if (pat_len > wowlan->pattern_max_len ||
13754 pat_len < wowlan->pattern_min_len)
13755 goto error;
13756
13757 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13758 pkt_offset = 0;
13759 else
13760 pkt_offset = nla_get_u32(
13761 pat_tb[NL80211_PKTPAT_OFFSET]);
13762 if (pkt_offset > wowlan->max_pkt_offset)
13763 goto error;
13764 new_triggers.patterns[i].pkt_offset = pkt_offset;
13765
13766 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13767 if (!mask_pat) {
13768 err = -ENOMEM;
13769 goto error;
13770 }
13771 new_triggers.patterns[i].mask = mask_pat;
13772 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13773 mask_len);
13774 mask_pat += mask_len;
13775 new_triggers.patterns[i].pattern = mask_pat;
13776 new_triggers.patterns[i].pattern_len = pat_len;
13777 memcpy(mask_pat,
13778 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13779 pat_len);
13780 i++;
13781 }
13782 }
13783
13784 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13785 regular = true;
13786 err = nl80211_parse_wowlan_tcp(
13787 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13788 &new_triggers);
13789 if (err)
13790 goto error;
13791 }
13792
13793 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13794 regular = true;
13795 err = nl80211_parse_wowlan_nd(
13796 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13797 &new_triggers);
13798 if (err)
13799 goto error;
13800 }
13801
13802 /* The 'any' trigger means the device continues operating more or less
13803 * as in its normal operation mode and wakes up the host on most of the
13804 * normal interrupts (like packet RX, ...)
13805 * It therefore makes little sense to combine with the more constrained
13806 * wakeup trigger modes.
13807 */
13808 if (new_triggers.any && regular) {
13809 err = -EINVAL;
13810 goto error;
13811 }
13812
13813 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13814 if (!ntrig) {
13815 err = -ENOMEM;
13816 goto error;
13817 }
13818 cfg80211_rdev_free_wowlan(rdev);
13819 rdev->wiphy.wowlan_config = ntrig;
13820
13821 set_wakeup:
13822 if (rdev->ops->set_wakeup &&
13823 prev_enabled != !!rdev->wiphy.wowlan_config)
13824 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13825
13826 return 0;
13827 error:
13828 for (i = 0; i < new_triggers.n_patterns; i++)
13829 kfree(new_triggers.patterns[i].mask);
13830 kfree(new_triggers.patterns);
13831 if (new_triggers.tcp && new_triggers.tcp->sock)
13832 sock_release(new_triggers.tcp->sock);
13833 kfree(new_triggers.tcp);
13834 kfree(new_triggers.nd_config);
13835 return err;
13836 }
13837 #endif
13838
nl80211_send_coalesce_rules(struct sk_buff * msg,struct cfg80211_registered_device * rdev)13839 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13840 struct cfg80211_registered_device *rdev)
13841 {
13842 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13843 int i, j, pat_len;
13844 struct cfg80211_coalesce_rules *rule;
13845
13846 if (!rdev->coalesce->n_rules)
13847 return 0;
13848
13849 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13850 if (!nl_rules)
13851 return -ENOBUFS;
13852
13853 for (i = 0; i < rdev->coalesce->n_rules; i++) {
13854 nl_rule = nla_nest_start_noflag(msg, i + 1);
13855 if (!nl_rule)
13856 return -ENOBUFS;
13857
13858 rule = &rdev->coalesce->rules[i];
13859 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13860 rule->delay))
13861 return -ENOBUFS;
13862
13863 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13864 rule->condition))
13865 return -ENOBUFS;
13866
13867 nl_pats = nla_nest_start_noflag(msg,
13868 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13869 if (!nl_pats)
13870 return -ENOBUFS;
13871
13872 for (j = 0; j < rule->n_patterns; j++) {
13873 nl_pat = nla_nest_start_noflag(msg, j + 1);
13874 if (!nl_pat)
13875 return -ENOBUFS;
13876 pat_len = rule->patterns[j].pattern_len;
13877 if (nla_put(msg, NL80211_PKTPAT_MASK,
13878 DIV_ROUND_UP(pat_len, 8),
13879 rule->patterns[j].mask) ||
13880 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13881 rule->patterns[j].pattern) ||
13882 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13883 rule->patterns[j].pkt_offset))
13884 return -ENOBUFS;
13885 nla_nest_end(msg, nl_pat);
13886 }
13887 nla_nest_end(msg, nl_pats);
13888 nla_nest_end(msg, nl_rule);
13889 }
13890 nla_nest_end(msg, nl_rules);
13891
13892 return 0;
13893 }
13894
nl80211_get_coalesce(struct sk_buff * skb,struct genl_info * info)13895 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13896 {
13897 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13898 struct sk_buff *msg;
13899 void *hdr;
13900
13901 if (!rdev->wiphy.coalesce)
13902 return -EOPNOTSUPP;
13903
13904 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13905 if (!msg)
13906 return -ENOMEM;
13907
13908 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13909 NL80211_CMD_GET_COALESCE);
13910 if (!hdr)
13911 goto nla_put_failure;
13912
13913 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13914 goto nla_put_failure;
13915
13916 genlmsg_end(msg, hdr);
13917 return genlmsg_reply(msg, info);
13918
13919 nla_put_failure:
13920 nlmsg_free(msg);
13921 return -ENOBUFS;
13922 }
13923
cfg80211_rdev_free_coalesce(struct cfg80211_registered_device * rdev)13924 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13925 {
13926 struct cfg80211_coalesce *coalesce = rdev->coalesce;
13927 int i, j;
13928 struct cfg80211_coalesce_rules *rule;
13929
13930 if (!coalesce)
13931 return;
13932
13933 for (i = 0; i < coalesce->n_rules; i++) {
13934 rule = &coalesce->rules[i];
13935 for (j = 0; j < rule->n_patterns; j++)
13936 kfree(rule->patterns[j].mask);
13937 kfree(rule->patterns);
13938 }
13939 kfree(coalesce->rules);
13940 kfree(coalesce);
13941 rdev->coalesce = NULL;
13942 }
13943
nl80211_parse_coalesce_rule(struct cfg80211_registered_device * rdev,struct nlattr * rule,struct cfg80211_coalesce_rules * new_rule)13944 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13945 struct nlattr *rule,
13946 struct cfg80211_coalesce_rules *new_rule)
13947 {
13948 int err, i;
13949 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13950 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13951 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13952 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13953
13954 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13955 rule, nl80211_coalesce_policy, NULL);
13956 if (err)
13957 return err;
13958
13959 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13960 new_rule->delay =
13961 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13962 if (new_rule->delay > coalesce->max_delay)
13963 return -EINVAL;
13964
13965 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13966 new_rule->condition =
13967 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13968
13969 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13970 return -EINVAL;
13971
13972 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13973 rem)
13974 n_patterns++;
13975 if (n_patterns > coalesce->n_patterns)
13976 return -EINVAL;
13977
13978 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13979 GFP_KERNEL);
13980 if (!new_rule->patterns)
13981 return -ENOMEM;
13982
13983 new_rule->n_patterns = n_patterns;
13984 i = 0;
13985
13986 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13987 rem) {
13988 u8 *mask_pat;
13989
13990 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13991 pat,
13992 nl80211_packet_pattern_policy,
13993 NULL);
13994 if (err)
13995 return err;
13996
13997 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13998 !pat_tb[NL80211_PKTPAT_PATTERN])
13999 return -EINVAL;
14000 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
14001 mask_len = DIV_ROUND_UP(pat_len, 8);
14002 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
14003 return -EINVAL;
14004 if (pat_len > coalesce->pattern_max_len ||
14005 pat_len < coalesce->pattern_min_len)
14006 return -EINVAL;
14007
14008 if (!pat_tb[NL80211_PKTPAT_OFFSET])
14009 pkt_offset = 0;
14010 else
14011 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
14012 if (pkt_offset > coalesce->max_pkt_offset)
14013 return -EINVAL;
14014 new_rule->patterns[i].pkt_offset = pkt_offset;
14015
14016 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
14017 if (!mask_pat)
14018 return -ENOMEM;
14019
14020 new_rule->patterns[i].mask = mask_pat;
14021 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
14022 mask_len);
14023
14024 mask_pat += mask_len;
14025 new_rule->patterns[i].pattern = mask_pat;
14026 new_rule->patterns[i].pattern_len = pat_len;
14027 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
14028 pat_len);
14029 i++;
14030 }
14031
14032 return 0;
14033 }
14034
nl80211_set_coalesce(struct sk_buff * skb,struct genl_info * info)14035 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
14036 {
14037 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14038 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
14039 struct cfg80211_coalesce new_coalesce = {};
14040 struct cfg80211_coalesce *n_coalesce;
14041 int err, rem_rule, n_rules = 0, i, j;
14042 struct nlattr *rule;
14043 struct cfg80211_coalesce_rules *tmp_rule;
14044
14045 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
14046 return -EOPNOTSUPP;
14047
14048 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
14049 cfg80211_rdev_free_coalesce(rdev);
14050 rdev_set_coalesce(rdev, NULL);
14051 return 0;
14052 }
14053
14054 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14055 rem_rule)
14056 n_rules++;
14057 if (n_rules > coalesce->n_rules)
14058 return -EINVAL;
14059
14060 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
14061 GFP_KERNEL);
14062 if (!new_coalesce.rules)
14063 return -ENOMEM;
14064
14065 new_coalesce.n_rules = n_rules;
14066 i = 0;
14067
14068 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14069 rem_rule) {
14070 err = nl80211_parse_coalesce_rule(rdev, rule,
14071 &new_coalesce.rules[i]);
14072 if (err)
14073 goto error;
14074
14075 i++;
14076 }
14077
14078 err = rdev_set_coalesce(rdev, &new_coalesce);
14079 if (err)
14080 goto error;
14081
14082 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
14083 if (!n_coalesce) {
14084 err = -ENOMEM;
14085 goto error;
14086 }
14087 cfg80211_rdev_free_coalesce(rdev);
14088 rdev->coalesce = n_coalesce;
14089
14090 return 0;
14091 error:
14092 for (i = 0; i < new_coalesce.n_rules; i++) {
14093 tmp_rule = &new_coalesce.rules[i];
14094 if (!tmp_rule)
14095 continue;
14096 for (j = 0; j < tmp_rule->n_patterns; j++)
14097 kfree(tmp_rule->patterns[j].mask);
14098 kfree(tmp_rule->patterns);
14099 }
14100 kfree(new_coalesce.rules);
14101
14102 return err;
14103 }
14104
nl80211_set_rekey_data(struct sk_buff * skb,struct genl_info * info)14105 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
14106 {
14107 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14108 struct net_device *dev = info->user_ptr[1];
14109 struct wireless_dev *wdev = dev->ieee80211_ptr;
14110 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
14111 struct cfg80211_gtk_rekey_data rekey_data = {};
14112 int err;
14113
14114 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
14115 return -EINVAL;
14116
14117 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
14118 info->attrs[NL80211_ATTR_REKEY_DATA],
14119 nl80211_rekey_policy, info->extack);
14120 if (err)
14121 return err;
14122
14123 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
14124 !tb[NL80211_REKEY_DATA_KCK])
14125 return -EINVAL;
14126 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
14127 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14128 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
14129 return -ERANGE;
14130 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
14131 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14132 nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
14133 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
14134 nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
14135 return -ERANGE;
14136
14137 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
14138 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
14139 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
14140 rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
14141 rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
14142 if (tb[NL80211_REKEY_DATA_AKM])
14143 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
14144
14145 wdev_lock(wdev);
14146 if (!wdev->connected) {
14147 err = -ENOTCONN;
14148 goto out;
14149 }
14150
14151 if (!rdev->ops->set_rekey_data) {
14152 err = -EOPNOTSUPP;
14153 goto out;
14154 }
14155
14156 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
14157 out:
14158 wdev_unlock(wdev);
14159 return err;
14160 }
14161
nl80211_register_unexpected_frame(struct sk_buff * skb,struct genl_info * info)14162 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
14163 struct genl_info *info)
14164 {
14165 struct net_device *dev = info->user_ptr[1];
14166 struct wireless_dev *wdev = dev->ieee80211_ptr;
14167
14168 if (wdev->iftype != NL80211_IFTYPE_AP &&
14169 wdev->iftype != NL80211_IFTYPE_P2P_GO)
14170 return -EINVAL;
14171
14172 if (wdev->ap_unexpected_nlportid)
14173 return -EBUSY;
14174
14175 wdev->ap_unexpected_nlportid = info->snd_portid;
14176 return 0;
14177 }
14178
nl80211_probe_client(struct sk_buff * skb,struct genl_info * info)14179 static int nl80211_probe_client(struct sk_buff *skb,
14180 struct genl_info *info)
14181 {
14182 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14183 struct net_device *dev = info->user_ptr[1];
14184 struct wireless_dev *wdev = dev->ieee80211_ptr;
14185 struct sk_buff *msg;
14186 void *hdr;
14187 const u8 *addr;
14188 u64 cookie;
14189 int err;
14190
14191 if (wdev->iftype != NL80211_IFTYPE_AP &&
14192 wdev->iftype != NL80211_IFTYPE_P2P_GO)
14193 return -EOPNOTSUPP;
14194
14195 if (!info->attrs[NL80211_ATTR_MAC])
14196 return -EINVAL;
14197
14198 if (!rdev->ops->probe_client)
14199 return -EOPNOTSUPP;
14200
14201 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14202 if (!msg)
14203 return -ENOMEM;
14204
14205 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14206 NL80211_CMD_PROBE_CLIENT);
14207 if (!hdr) {
14208 err = -ENOBUFS;
14209 goto free_msg;
14210 }
14211
14212 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14213
14214 err = rdev_probe_client(rdev, dev, addr, &cookie);
14215 if (err)
14216 goto free_msg;
14217
14218 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14219 NL80211_ATTR_PAD))
14220 goto nla_put_failure;
14221
14222 genlmsg_end(msg, hdr);
14223
14224 return genlmsg_reply(msg, info);
14225
14226 nla_put_failure:
14227 err = -ENOBUFS;
14228 free_msg:
14229 nlmsg_free(msg);
14230 return err;
14231 }
14232
nl80211_register_beacons(struct sk_buff * skb,struct genl_info * info)14233 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
14234 {
14235 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14236 struct cfg80211_beacon_registration *reg, *nreg;
14237 int rv;
14238
14239 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
14240 return -EOPNOTSUPP;
14241
14242 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
14243 if (!nreg)
14244 return -ENOMEM;
14245
14246 /* First, check if already registered. */
14247 spin_lock_bh(&rdev->beacon_registrations_lock);
14248 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14249 if (reg->nlportid == info->snd_portid) {
14250 rv = -EALREADY;
14251 goto out_err;
14252 }
14253 }
14254 /* Add it to the list */
14255 nreg->nlportid = info->snd_portid;
14256 list_add(&nreg->list, &rdev->beacon_registrations);
14257
14258 spin_unlock_bh(&rdev->beacon_registrations_lock);
14259
14260 return 0;
14261 out_err:
14262 spin_unlock_bh(&rdev->beacon_registrations_lock);
14263 kfree(nreg);
14264 return rv;
14265 }
14266
nl80211_start_p2p_device(struct sk_buff * skb,struct genl_info * info)14267 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
14268 {
14269 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14270 struct wireless_dev *wdev = info->user_ptr[1];
14271 int err;
14272
14273 if (!rdev->ops->start_p2p_device)
14274 return -EOPNOTSUPP;
14275
14276 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14277 return -EOPNOTSUPP;
14278
14279 if (wdev_running(wdev))
14280 return 0;
14281
14282 if (rfkill_blocked(rdev->wiphy.rfkill))
14283 return -ERFKILL;
14284
14285 err = rdev_start_p2p_device(rdev, wdev);
14286 if (err)
14287 return err;
14288
14289 wdev->is_running = true;
14290 rdev->opencount++;
14291
14292 return 0;
14293 }
14294
nl80211_stop_p2p_device(struct sk_buff * skb,struct genl_info * info)14295 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
14296 {
14297 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14298 struct wireless_dev *wdev = info->user_ptr[1];
14299
14300 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14301 return -EOPNOTSUPP;
14302
14303 if (!rdev->ops->stop_p2p_device)
14304 return -EOPNOTSUPP;
14305
14306 cfg80211_stop_p2p_device(rdev, wdev);
14307
14308 return 0;
14309 }
14310
nl80211_start_nan(struct sk_buff * skb,struct genl_info * info)14311 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
14312 {
14313 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14314 struct wireless_dev *wdev = info->user_ptr[1];
14315 struct cfg80211_nan_conf conf = {};
14316 int err;
14317
14318 if (wdev->iftype != NL80211_IFTYPE_NAN)
14319 return -EOPNOTSUPP;
14320
14321 if (wdev_running(wdev))
14322 return -EEXIST;
14323
14324 if (rfkill_blocked(rdev->wiphy.rfkill))
14325 return -ERFKILL;
14326
14327 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14328 return -EINVAL;
14329
14330 conf.master_pref =
14331 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14332
14333 if (info->attrs[NL80211_ATTR_BANDS]) {
14334 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14335
14336 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14337 return -EOPNOTSUPP;
14338
14339 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14340 return -EINVAL;
14341
14342 conf.bands = bands;
14343 }
14344
14345 err = rdev_start_nan(rdev, wdev, &conf);
14346 if (err)
14347 return err;
14348
14349 wdev->is_running = true;
14350 rdev->opencount++;
14351
14352 return 0;
14353 }
14354
nl80211_stop_nan(struct sk_buff * skb,struct genl_info * info)14355 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14356 {
14357 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14358 struct wireless_dev *wdev = info->user_ptr[1];
14359
14360 if (wdev->iftype != NL80211_IFTYPE_NAN)
14361 return -EOPNOTSUPP;
14362
14363 cfg80211_stop_nan(rdev, wdev);
14364
14365 return 0;
14366 }
14367
validate_nan_filter(struct nlattr * filter_attr)14368 static int validate_nan_filter(struct nlattr *filter_attr)
14369 {
14370 struct nlattr *attr;
14371 int len = 0, n_entries = 0, rem;
14372
14373 nla_for_each_nested(attr, filter_attr, rem) {
14374 len += nla_len(attr);
14375 n_entries++;
14376 }
14377
14378 if (len >= U8_MAX)
14379 return -EINVAL;
14380
14381 return n_entries;
14382 }
14383
handle_nan_filter(struct nlattr * attr_filter,struct cfg80211_nan_func * func,bool tx)14384 static int handle_nan_filter(struct nlattr *attr_filter,
14385 struct cfg80211_nan_func *func,
14386 bool tx)
14387 {
14388 struct nlattr *attr;
14389 int n_entries, rem, i;
14390 struct cfg80211_nan_func_filter *filter;
14391
14392 n_entries = validate_nan_filter(attr_filter);
14393 if (n_entries < 0)
14394 return n_entries;
14395
14396 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14397
14398 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14399 if (!filter)
14400 return -ENOMEM;
14401
14402 i = 0;
14403 nla_for_each_nested(attr, attr_filter, rem) {
14404 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14405 if (!filter[i].filter)
14406 goto err;
14407
14408 filter[i].len = nla_len(attr);
14409 i++;
14410 }
14411 if (tx) {
14412 func->num_tx_filters = n_entries;
14413 func->tx_filters = filter;
14414 } else {
14415 func->num_rx_filters = n_entries;
14416 func->rx_filters = filter;
14417 }
14418
14419 return 0;
14420
14421 err:
14422 i = 0;
14423 nla_for_each_nested(attr, attr_filter, rem) {
14424 kfree(filter[i].filter);
14425 i++;
14426 }
14427 kfree(filter);
14428 return -ENOMEM;
14429 }
14430
nl80211_nan_add_func(struct sk_buff * skb,struct genl_info * info)14431 static int nl80211_nan_add_func(struct sk_buff *skb,
14432 struct genl_info *info)
14433 {
14434 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14435 struct wireless_dev *wdev = info->user_ptr[1];
14436 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14437 struct cfg80211_nan_func *func;
14438 struct sk_buff *msg = NULL;
14439 void *hdr = NULL;
14440 int err = 0;
14441
14442 if (wdev->iftype != NL80211_IFTYPE_NAN)
14443 return -EOPNOTSUPP;
14444
14445 if (!wdev_running(wdev))
14446 return -ENOTCONN;
14447
14448 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14449 return -EINVAL;
14450
14451 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14452 info->attrs[NL80211_ATTR_NAN_FUNC],
14453 nl80211_nan_func_policy,
14454 info->extack);
14455 if (err)
14456 return err;
14457
14458 func = kzalloc(sizeof(*func), GFP_KERNEL);
14459 if (!func)
14460 return -ENOMEM;
14461
14462 func->cookie = cfg80211_assign_cookie(rdev);
14463
14464 if (!tb[NL80211_NAN_FUNC_TYPE]) {
14465 err = -EINVAL;
14466 goto out;
14467 }
14468
14469
14470 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14471
14472 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14473 err = -EINVAL;
14474 goto out;
14475 }
14476
14477 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14478 sizeof(func->service_id));
14479
14480 func->close_range =
14481 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14482
14483 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14484 func->serv_spec_info_len =
14485 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14486 func->serv_spec_info =
14487 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14488 func->serv_spec_info_len,
14489 GFP_KERNEL);
14490 if (!func->serv_spec_info) {
14491 err = -ENOMEM;
14492 goto out;
14493 }
14494 }
14495
14496 if (tb[NL80211_NAN_FUNC_TTL])
14497 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14498
14499 switch (func->type) {
14500 case NL80211_NAN_FUNC_PUBLISH:
14501 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14502 err = -EINVAL;
14503 goto out;
14504 }
14505
14506 func->publish_type =
14507 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14508 func->publish_bcast =
14509 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14510
14511 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14512 func->publish_bcast) {
14513 err = -EINVAL;
14514 goto out;
14515 }
14516 break;
14517 case NL80211_NAN_FUNC_SUBSCRIBE:
14518 func->subscribe_active =
14519 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14520 break;
14521 case NL80211_NAN_FUNC_FOLLOW_UP:
14522 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14523 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14524 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14525 err = -EINVAL;
14526 goto out;
14527 }
14528
14529 func->followup_id =
14530 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14531 func->followup_reqid =
14532 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14533 memcpy(func->followup_dest.addr,
14534 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14535 sizeof(func->followup_dest.addr));
14536 if (func->ttl) {
14537 err = -EINVAL;
14538 goto out;
14539 }
14540 break;
14541 default:
14542 err = -EINVAL;
14543 goto out;
14544 }
14545
14546 if (tb[NL80211_NAN_FUNC_SRF]) {
14547 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14548
14549 err = nla_parse_nested_deprecated(srf_tb,
14550 NL80211_NAN_SRF_ATTR_MAX,
14551 tb[NL80211_NAN_FUNC_SRF],
14552 nl80211_nan_srf_policy,
14553 info->extack);
14554 if (err)
14555 goto out;
14556
14557 func->srf_include =
14558 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14559
14560 if (srf_tb[NL80211_NAN_SRF_BF]) {
14561 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14562 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14563 err = -EINVAL;
14564 goto out;
14565 }
14566
14567 func->srf_bf_len =
14568 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14569 func->srf_bf =
14570 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14571 func->srf_bf_len, GFP_KERNEL);
14572 if (!func->srf_bf) {
14573 err = -ENOMEM;
14574 goto out;
14575 }
14576
14577 func->srf_bf_idx =
14578 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14579 } else {
14580 struct nlattr *attr, *mac_attr =
14581 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14582 int n_entries, rem, i = 0;
14583
14584 if (!mac_attr) {
14585 err = -EINVAL;
14586 goto out;
14587 }
14588
14589 n_entries = validate_acl_mac_addrs(mac_attr);
14590 if (n_entries <= 0) {
14591 err = -EINVAL;
14592 goto out;
14593 }
14594
14595 func->srf_num_macs = n_entries;
14596 func->srf_macs =
14597 kcalloc(n_entries, sizeof(*func->srf_macs),
14598 GFP_KERNEL);
14599 if (!func->srf_macs) {
14600 err = -ENOMEM;
14601 goto out;
14602 }
14603
14604 nla_for_each_nested(attr, mac_attr, rem)
14605 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14606 sizeof(*func->srf_macs));
14607 }
14608 }
14609
14610 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14611 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14612 func, true);
14613 if (err)
14614 goto out;
14615 }
14616
14617 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14618 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14619 func, false);
14620 if (err)
14621 goto out;
14622 }
14623
14624 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14625 if (!msg) {
14626 err = -ENOMEM;
14627 goto out;
14628 }
14629
14630 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14631 NL80211_CMD_ADD_NAN_FUNCTION);
14632 /* This can't really happen - we just allocated 4KB */
14633 if (WARN_ON(!hdr)) {
14634 err = -ENOMEM;
14635 goto out;
14636 }
14637
14638 err = rdev_add_nan_func(rdev, wdev, func);
14639 out:
14640 if (err < 0) {
14641 cfg80211_free_nan_func(func);
14642 nlmsg_free(msg);
14643 return err;
14644 }
14645
14646 /* propagate the instance id and cookie to userspace */
14647 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14648 NL80211_ATTR_PAD))
14649 goto nla_put_failure;
14650
14651 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14652 if (!func_attr)
14653 goto nla_put_failure;
14654
14655 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14656 func->instance_id))
14657 goto nla_put_failure;
14658
14659 nla_nest_end(msg, func_attr);
14660
14661 genlmsg_end(msg, hdr);
14662 return genlmsg_reply(msg, info);
14663
14664 nla_put_failure:
14665 nlmsg_free(msg);
14666 return -ENOBUFS;
14667 }
14668
nl80211_nan_del_func(struct sk_buff * skb,struct genl_info * info)14669 static int nl80211_nan_del_func(struct sk_buff *skb,
14670 struct genl_info *info)
14671 {
14672 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14673 struct wireless_dev *wdev = info->user_ptr[1];
14674 u64 cookie;
14675
14676 if (wdev->iftype != NL80211_IFTYPE_NAN)
14677 return -EOPNOTSUPP;
14678
14679 if (!wdev_running(wdev))
14680 return -ENOTCONN;
14681
14682 if (!info->attrs[NL80211_ATTR_COOKIE])
14683 return -EINVAL;
14684
14685 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14686
14687 rdev_del_nan_func(rdev, wdev, cookie);
14688
14689 return 0;
14690 }
14691
nl80211_nan_change_config(struct sk_buff * skb,struct genl_info * info)14692 static int nl80211_nan_change_config(struct sk_buff *skb,
14693 struct genl_info *info)
14694 {
14695 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14696 struct wireless_dev *wdev = info->user_ptr[1];
14697 struct cfg80211_nan_conf conf = {};
14698 u32 changed = 0;
14699
14700 if (wdev->iftype != NL80211_IFTYPE_NAN)
14701 return -EOPNOTSUPP;
14702
14703 if (!wdev_running(wdev))
14704 return -ENOTCONN;
14705
14706 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14707 conf.master_pref =
14708 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14709 if (conf.master_pref <= 1 || conf.master_pref == 255)
14710 return -EINVAL;
14711
14712 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14713 }
14714
14715 if (info->attrs[NL80211_ATTR_BANDS]) {
14716 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14717
14718 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14719 return -EOPNOTSUPP;
14720
14721 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14722 return -EINVAL;
14723
14724 conf.bands = bands;
14725 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14726 }
14727
14728 if (!changed)
14729 return -EINVAL;
14730
14731 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14732 }
14733
cfg80211_nan_match(struct wireless_dev * wdev,struct cfg80211_nan_match_params * match,gfp_t gfp)14734 void cfg80211_nan_match(struct wireless_dev *wdev,
14735 struct cfg80211_nan_match_params *match, gfp_t gfp)
14736 {
14737 struct wiphy *wiphy = wdev->wiphy;
14738 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14739 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14740 struct sk_buff *msg;
14741 void *hdr;
14742
14743 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14744 return;
14745
14746 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14747 if (!msg)
14748 return;
14749
14750 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14751 if (!hdr) {
14752 nlmsg_free(msg);
14753 return;
14754 }
14755
14756 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14757 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14758 wdev->netdev->ifindex)) ||
14759 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14760 NL80211_ATTR_PAD))
14761 goto nla_put_failure;
14762
14763 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14764 NL80211_ATTR_PAD) ||
14765 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14766 goto nla_put_failure;
14767
14768 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14769 if (!match_attr)
14770 goto nla_put_failure;
14771
14772 local_func_attr = nla_nest_start_noflag(msg,
14773 NL80211_NAN_MATCH_FUNC_LOCAL);
14774 if (!local_func_attr)
14775 goto nla_put_failure;
14776
14777 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14778 goto nla_put_failure;
14779
14780 nla_nest_end(msg, local_func_attr);
14781
14782 peer_func_attr = nla_nest_start_noflag(msg,
14783 NL80211_NAN_MATCH_FUNC_PEER);
14784 if (!peer_func_attr)
14785 goto nla_put_failure;
14786
14787 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14788 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14789 goto nla_put_failure;
14790
14791 if (match->info && match->info_len &&
14792 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14793 match->info))
14794 goto nla_put_failure;
14795
14796 nla_nest_end(msg, peer_func_attr);
14797 nla_nest_end(msg, match_attr);
14798 genlmsg_end(msg, hdr);
14799
14800 if (!wdev->owner_nlportid)
14801 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14802 msg, 0, NL80211_MCGRP_NAN, gfp);
14803 else
14804 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14805 wdev->owner_nlportid);
14806
14807 return;
14808
14809 nla_put_failure:
14810 nlmsg_free(msg);
14811 }
14812 EXPORT_SYMBOL(cfg80211_nan_match);
14813
cfg80211_nan_func_terminated(struct wireless_dev * wdev,u8 inst_id,enum nl80211_nan_func_term_reason reason,u64 cookie,gfp_t gfp)14814 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14815 u8 inst_id,
14816 enum nl80211_nan_func_term_reason reason,
14817 u64 cookie, gfp_t gfp)
14818 {
14819 struct wiphy *wiphy = wdev->wiphy;
14820 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14821 struct sk_buff *msg;
14822 struct nlattr *func_attr;
14823 void *hdr;
14824
14825 if (WARN_ON(!inst_id))
14826 return;
14827
14828 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14829 if (!msg)
14830 return;
14831
14832 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14833 if (!hdr) {
14834 nlmsg_free(msg);
14835 return;
14836 }
14837
14838 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14839 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14840 wdev->netdev->ifindex)) ||
14841 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14842 NL80211_ATTR_PAD))
14843 goto nla_put_failure;
14844
14845 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14846 NL80211_ATTR_PAD))
14847 goto nla_put_failure;
14848
14849 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14850 if (!func_attr)
14851 goto nla_put_failure;
14852
14853 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14854 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14855 goto nla_put_failure;
14856
14857 nla_nest_end(msg, func_attr);
14858 genlmsg_end(msg, hdr);
14859
14860 if (!wdev->owner_nlportid)
14861 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14862 msg, 0, NL80211_MCGRP_NAN, gfp);
14863 else
14864 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14865 wdev->owner_nlportid);
14866
14867 return;
14868
14869 nla_put_failure:
14870 nlmsg_free(msg);
14871 }
14872 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14873
nl80211_get_protocol_features(struct sk_buff * skb,struct genl_info * info)14874 static int nl80211_get_protocol_features(struct sk_buff *skb,
14875 struct genl_info *info)
14876 {
14877 void *hdr;
14878 struct sk_buff *msg;
14879
14880 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14881 if (!msg)
14882 return -ENOMEM;
14883
14884 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14885 NL80211_CMD_GET_PROTOCOL_FEATURES);
14886 if (!hdr)
14887 goto nla_put_failure;
14888
14889 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14890 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14891 goto nla_put_failure;
14892
14893 genlmsg_end(msg, hdr);
14894 return genlmsg_reply(msg, info);
14895
14896 nla_put_failure:
14897 kfree_skb(msg);
14898 return -ENOBUFS;
14899 }
14900
nl80211_update_ft_ies(struct sk_buff * skb,struct genl_info * info)14901 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14902 {
14903 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14904 struct cfg80211_update_ft_ies_params ft_params;
14905 struct net_device *dev = info->user_ptr[1];
14906
14907 if (!rdev->ops->update_ft_ies)
14908 return -EOPNOTSUPP;
14909
14910 if (!info->attrs[NL80211_ATTR_MDID] ||
14911 !info->attrs[NL80211_ATTR_IE])
14912 return -EINVAL;
14913
14914 memset(&ft_params, 0, sizeof(ft_params));
14915 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14916 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14917 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14918
14919 return rdev_update_ft_ies(rdev, dev, &ft_params);
14920 }
14921
nl80211_crit_protocol_start(struct sk_buff * skb,struct genl_info * info)14922 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14923 struct genl_info *info)
14924 {
14925 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14926 struct wireless_dev *wdev = info->user_ptr[1];
14927 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14928 u16 duration;
14929 int ret;
14930
14931 if (!rdev->ops->crit_proto_start)
14932 return -EOPNOTSUPP;
14933
14934 if (WARN_ON(!rdev->ops->crit_proto_stop))
14935 return -EINVAL;
14936
14937 if (rdev->crit_proto_nlportid)
14938 return -EBUSY;
14939
14940 /* determine protocol if provided */
14941 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14942 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14943
14944 if (proto >= NUM_NL80211_CRIT_PROTO)
14945 return -EINVAL;
14946
14947 /* timeout must be provided */
14948 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14949 return -EINVAL;
14950
14951 duration =
14952 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14953
14954 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14955 if (!ret)
14956 rdev->crit_proto_nlportid = info->snd_portid;
14957
14958 return ret;
14959 }
14960
nl80211_crit_protocol_stop(struct sk_buff * skb,struct genl_info * info)14961 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14962 struct genl_info *info)
14963 {
14964 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14965 struct wireless_dev *wdev = info->user_ptr[1];
14966
14967 if (!rdev->ops->crit_proto_stop)
14968 return -EOPNOTSUPP;
14969
14970 if (rdev->crit_proto_nlportid) {
14971 rdev->crit_proto_nlportid = 0;
14972 rdev_crit_proto_stop(rdev, wdev);
14973 }
14974 return 0;
14975 }
14976
nl80211_vendor_check_policy(const struct wiphy_vendor_command * vcmd,struct nlattr * attr,struct netlink_ext_ack * extack)14977 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14978 struct nlattr *attr,
14979 struct netlink_ext_ack *extack)
14980 {
14981 if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14982 if (attr->nla_type & NLA_F_NESTED) {
14983 NL_SET_ERR_MSG_ATTR(extack, attr,
14984 "unexpected nested data");
14985 return -EINVAL;
14986 }
14987
14988 return 0;
14989 }
14990
14991 if (!(attr->nla_type & NLA_F_NESTED)) {
14992 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14993 return -EINVAL;
14994 }
14995
14996 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14997 }
14998
nl80211_vendor_cmd(struct sk_buff * skb,struct genl_info * info)14999 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
15000 {
15001 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15002 struct wireless_dev *wdev =
15003 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
15004 info->attrs);
15005 int i, err;
15006 u32 vid, subcmd;
15007
15008 if (!rdev->wiphy.vendor_commands)
15009 return -EOPNOTSUPP;
15010
15011 if (IS_ERR(wdev)) {
15012 err = PTR_ERR(wdev);
15013 if (err != -EINVAL)
15014 return err;
15015 wdev = NULL;
15016 } else if (wdev->wiphy != &rdev->wiphy) {
15017 return -EINVAL;
15018 }
15019
15020 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
15021 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
15022 return -EINVAL;
15023
15024 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
15025 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
15026 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
15027 const struct wiphy_vendor_command *vcmd;
15028 void *data = NULL;
15029 int len = 0;
15030
15031 vcmd = &rdev->wiphy.vendor_commands[i];
15032
15033 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15034 continue;
15035
15036 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15037 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15038 if (!wdev)
15039 return -EINVAL;
15040 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15041 !wdev->netdev)
15042 return -EINVAL;
15043
15044 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15045 if (!wdev_running(wdev))
15046 return -ENETDOWN;
15047 }
15048 } else {
15049 wdev = NULL;
15050 }
15051
15052 if (!vcmd->doit)
15053 return -EOPNOTSUPP;
15054
15055 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
15056 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15057 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15058
15059 err = nl80211_vendor_check_policy(vcmd,
15060 info->attrs[NL80211_ATTR_VENDOR_DATA],
15061 info->extack);
15062 if (err)
15063 return err;
15064 }
15065
15066 rdev->cur_cmd_info = info;
15067 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
15068 rdev->cur_cmd_info = NULL;
15069 return err;
15070 }
15071
15072 return -EOPNOTSUPP;
15073 }
15074
nl80211_prepare_vendor_dump(struct sk_buff * skb,struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)15075 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
15076 struct netlink_callback *cb,
15077 struct cfg80211_registered_device **rdev,
15078 struct wireless_dev **wdev)
15079 {
15080 struct nlattr **attrbuf;
15081 u32 vid, subcmd;
15082 unsigned int i;
15083 int vcmd_idx = -1;
15084 int err;
15085 void *data = NULL;
15086 unsigned int data_len = 0;
15087
15088 if (cb->args[0]) {
15089 /* subtract the 1 again here */
15090 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
15091 struct wireless_dev *tmp;
15092
15093 if (!wiphy)
15094 return -ENODEV;
15095 *rdev = wiphy_to_rdev(wiphy);
15096 *wdev = NULL;
15097
15098 if (cb->args[1]) {
15099 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
15100 if (tmp->identifier == cb->args[1] - 1) {
15101 *wdev = tmp;
15102 break;
15103 }
15104 }
15105 }
15106
15107 /* keep rtnl locked in successful case */
15108 return 0;
15109 }
15110
15111 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
15112 if (!attrbuf)
15113 return -ENOMEM;
15114
15115 err = nlmsg_parse_deprecated(cb->nlh,
15116 GENL_HDRLEN + nl80211_fam.hdrsize,
15117 attrbuf, nl80211_fam.maxattr,
15118 nl80211_policy, NULL);
15119 if (err)
15120 goto out;
15121
15122 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
15123 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
15124 err = -EINVAL;
15125 goto out;
15126 }
15127
15128 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
15129 if (IS_ERR(*wdev))
15130 *wdev = NULL;
15131
15132 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
15133 if (IS_ERR(*rdev)) {
15134 err = PTR_ERR(*rdev);
15135 goto out;
15136 }
15137
15138 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
15139 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
15140
15141 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
15142 const struct wiphy_vendor_command *vcmd;
15143
15144 vcmd = &(*rdev)->wiphy.vendor_commands[i];
15145
15146 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15147 continue;
15148
15149 if (!vcmd->dumpit) {
15150 err = -EOPNOTSUPP;
15151 goto out;
15152 }
15153
15154 vcmd_idx = i;
15155 break;
15156 }
15157
15158 if (vcmd_idx < 0) {
15159 err = -EOPNOTSUPP;
15160 goto out;
15161 }
15162
15163 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
15164 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15165 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15166
15167 err = nl80211_vendor_check_policy(
15168 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
15169 attrbuf[NL80211_ATTR_VENDOR_DATA],
15170 cb->extack);
15171 if (err)
15172 goto out;
15173 }
15174
15175 /* 0 is the first index - add 1 to parse only once */
15176 cb->args[0] = (*rdev)->wiphy_idx + 1;
15177 /* add 1 to know if it was NULL */
15178 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
15179 cb->args[2] = vcmd_idx;
15180 cb->args[3] = (unsigned long)data;
15181 cb->args[4] = data_len;
15182
15183 /* keep rtnl locked in successful case */
15184 err = 0;
15185 out:
15186 kfree(attrbuf);
15187 return err;
15188 }
15189
nl80211_vendor_cmd_dump(struct sk_buff * skb,struct netlink_callback * cb)15190 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
15191 struct netlink_callback *cb)
15192 {
15193 struct cfg80211_registered_device *rdev;
15194 struct wireless_dev *wdev;
15195 unsigned int vcmd_idx;
15196 const struct wiphy_vendor_command *vcmd;
15197 void *data;
15198 int data_len;
15199 int err;
15200 struct nlattr *vendor_data;
15201
15202 rtnl_lock();
15203 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
15204 if (err)
15205 goto out;
15206
15207 vcmd_idx = cb->args[2];
15208 data = (void *)cb->args[3];
15209 data_len = cb->args[4];
15210 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
15211
15212 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15213 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15214 if (!wdev) {
15215 err = -EINVAL;
15216 goto out;
15217 }
15218 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15219 !wdev->netdev) {
15220 err = -EINVAL;
15221 goto out;
15222 }
15223
15224 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15225 if (!wdev_running(wdev)) {
15226 err = -ENETDOWN;
15227 goto out;
15228 }
15229 }
15230 }
15231
15232 while (1) {
15233 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
15234 cb->nlh->nlmsg_seq, NLM_F_MULTI,
15235 NL80211_CMD_VENDOR);
15236 if (!hdr)
15237 break;
15238
15239 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15240 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
15241 wdev_id(wdev),
15242 NL80211_ATTR_PAD))) {
15243 genlmsg_cancel(skb, hdr);
15244 break;
15245 }
15246
15247 vendor_data = nla_nest_start_noflag(skb,
15248 NL80211_ATTR_VENDOR_DATA);
15249 if (!vendor_data) {
15250 genlmsg_cancel(skb, hdr);
15251 break;
15252 }
15253
15254 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
15255 (unsigned long *)&cb->args[5]);
15256 nla_nest_end(skb, vendor_data);
15257
15258 if (err == -ENOBUFS || err == -ENOENT) {
15259 genlmsg_cancel(skb, hdr);
15260 break;
15261 } else if (err <= 0) {
15262 genlmsg_cancel(skb, hdr);
15263 goto out;
15264 }
15265
15266 genlmsg_end(skb, hdr);
15267 }
15268
15269 err = skb->len;
15270 out:
15271 rtnl_unlock();
15272 return err;
15273 }
15274
__cfg80211_alloc_reply_skb(struct wiphy * wiphy,enum nl80211_commands cmd,enum nl80211_attrs attr,int approxlen)15275 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
15276 enum nl80211_commands cmd,
15277 enum nl80211_attrs attr,
15278 int approxlen)
15279 {
15280 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15281
15282 if (WARN_ON(!rdev->cur_cmd_info))
15283 return NULL;
15284
15285 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
15286 rdev->cur_cmd_info->snd_portid,
15287 rdev->cur_cmd_info->snd_seq,
15288 cmd, attr, NULL, GFP_KERNEL);
15289 }
15290 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
15291
cfg80211_vendor_cmd_reply(struct sk_buff * skb)15292 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
15293 {
15294 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
15295 void *hdr = ((void **)skb->cb)[1];
15296 struct nlattr *data = ((void **)skb->cb)[2];
15297
15298 /* clear CB data for netlink core to own from now on */
15299 memset(skb->cb, 0, sizeof(skb->cb));
15300
15301 if (WARN_ON(!rdev->cur_cmd_info)) {
15302 kfree_skb(skb);
15303 return -EINVAL;
15304 }
15305
15306 nla_nest_end(skb, data);
15307 genlmsg_end(skb, hdr);
15308 return genlmsg_reply(skb, rdev->cur_cmd_info);
15309 }
15310 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
15311
cfg80211_vendor_cmd_get_sender(struct wiphy * wiphy)15312 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
15313 {
15314 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15315
15316 if (WARN_ON(!rdev->cur_cmd_info))
15317 return 0;
15318
15319 return rdev->cur_cmd_info->snd_portid;
15320 }
15321 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15322
nl80211_set_qos_map(struct sk_buff * skb,struct genl_info * info)15323 static int nl80211_set_qos_map(struct sk_buff *skb,
15324 struct genl_info *info)
15325 {
15326 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15327 struct cfg80211_qos_map *qos_map = NULL;
15328 struct net_device *dev = info->user_ptr[1];
15329 u8 *pos, len, num_des, des_len, des;
15330 int ret;
15331
15332 if (!rdev->ops->set_qos_map)
15333 return -EOPNOTSUPP;
15334
15335 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15336 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15337 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15338
15339 if (len % 2)
15340 return -EINVAL;
15341
15342 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15343 if (!qos_map)
15344 return -ENOMEM;
15345
15346 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15347 if (num_des) {
15348 des_len = num_des *
15349 sizeof(struct cfg80211_dscp_exception);
15350 memcpy(qos_map->dscp_exception, pos, des_len);
15351 qos_map->num_des = num_des;
15352 for (des = 0; des < num_des; des++) {
15353 if (qos_map->dscp_exception[des].up > 7) {
15354 kfree(qos_map);
15355 return -EINVAL;
15356 }
15357 }
15358 pos += des_len;
15359 }
15360 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15361 }
15362
15363 wdev_lock(dev->ieee80211_ptr);
15364 ret = nl80211_key_allowed(dev->ieee80211_ptr);
15365 if (!ret)
15366 ret = rdev_set_qos_map(rdev, dev, qos_map);
15367 wdev_unlock(dev->ieee80211_ptr);
15368
15369 kfree(qos_map);
15370 return ret;
15371 }
15372
nl80211_add_tx_ts(struct sk_buff * skb,struct genl_info * info)15373 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15374 {
15375 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15376 struct net_device *dev = info->user_ptr[1];
15377 struct wireless_dev *wdev = dev->ieee80211_ptr;
15378 const u8 *peer;
15379 u8 tsid, up;
15380 u16 admitted_time = 0;
15381 int err;
15382
15383 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15384 return -EOPNOTSUPP;
15385
15386 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15387 !info->attrs[NL80211_ATTR_USER_PRIO])
15388 return -EINVAL;
15389
15390 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15391 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15392
15393 /* WMM uses TIDs 0-7 even for TSPEC */
15394 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15395 /* TODO: handle 802.11 TSPEC/admission control
15396 * need more attributes for that (e.g. BA session requirement);
15397 * change the WMM adminssion test above to allow both then
15398 */
15399 return -EINVAL;
15400 }
15401
15402 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15403
15404 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15405 admitted_time =
15406 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15407 if (!admitted_time)
15408 return -EINVAL;
15409 }
15410
15411 wdev_lock(wdev);
15412 switch (wdev->iftype) {
15413 case NL80211_IFTYPE_STATION:
15414 case NL80211_IFTYPE_P2P_CLIENT:
15415 if (wdev->connected)
15416 break;
15417 err = -ENOTCONN;
15418 goto out;
15419 default:
15420 err = -EOPNOTSUPP;
15421 goto out;
15422 }
15423
15424 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15425
15426 out:
15427 wdev_unlock(wdev);
15428 return err;
15429 }
15430
nl80211_del_tx_ts(struct sk_buff * skb,struct genl_info * info)15431 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15432 {
15433 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15434 struct net_device *dev = info->user_ptr[1];
15435 struct wireless_dev *wdev = dev->ieee80211_ptr;
15436 const u8 *peer;
15437 u8 tsid;
15438 int err;
15439
15440 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15441 return -EINVAL;
15442
15443 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15444 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15445
15446 wdev_lock(wdev);
15447 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15448 wdev_unlock(wdev);
15449
15450 return err;
15451 }
15452
nl80211_tdls_channel_switch(struct sk_buff * skb,struct genl_info * info)15453 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15454 struct genl_info *info)
15455 {
15456 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15457 struct net_device *dev = info->user_ptr[1];
15458 struct wireless_dev *wdev = dev->ieee80211_ptr;
15459 struct cfg80211_chan_def chandef = {};
15460 const u8 *addr;
15461 u8 oper_class;
15462 int err;
15463
15464 if (!rdev->ops->tdls_channel_switch ||
15465 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15466 return -EOPNOTSUPP;
15467
15468 switch (dev->ieee80211_ptr->iftype) {
15469 case NL80211_IFTYPE_STATION:
15470 case NL80211_IFTYPE_P2P_CLIENT:
15471 break;
15472 default:
15473 return -EOPNOTSUPP;
15474 }
15475
15476 if (!info->attrs[NL80211_ATTR_MAC] ||
15477 !info->attrs[NL80211_ATTR_OPER_CLASS])
15478 return -EINVAL;
15479
15480 err = nl80211_parse_chandef(rdev, info, &chandef);
15481 if (err)
15482 return err;
15483
15484 /*
15485 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15486 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15487 * specification is not defined for them.
15488 */
15489 if (chandef.chan->band == NL80211_BAND_2GHZ &&
15490 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15491 chandef.width != NL80211_CHAN_WIDTH_20)
15492 return -EINVAL;
15493
15494 /* we will be active on the TDLS link */
15495 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15496 wdev->iftype))
15497 return -EINVAL;
15498
15499 /* don't allow switching to DFS channels */
15500 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15501 return -EINVAL;
15502
15503 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15504 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15505
15506 wdev_lock(wdev);
15507 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15508 wdev_unlock(wdev);
15509
15510 return err;
15511 }
15512
nl80211_tdls_cancel_channel_switch(struct sk_buff * skb,struct genl_info * info)15513 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15514 struct genl_info *info)
15515 {
15516 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15517 struct net_device *dev = info->user_ptr[1];
15518 struct wireless_dev *wdev = dev->ieee80211_ptr;
15519 const u8 *addr;
15520
15521 if (!rdev->ops->tdls_channel_switch ||
15522 !rdev->ops->tdls_cancel_channel_switch ||
15523 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15524 return -EOPNOTSUPP;
15525
15526 switch (dev->ieee80211_ptr->iftype) {
15527 case NL80211_IFTYPE_STATION:
15528 case NL80211_IFTYPE_P2P_CLIENT:
15529 break;
15530 default:
15531 return -EOPNOTSUPP;
15532 }
15533
15534 if (!info->attrs[NL80211_ATTR_MAC])
15535 return -EINVAL;
15536
15537 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15538
15539 wdev_lock(wdev);
15540 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15541 wdev_unlock(wdev);
15542
15543 return 0;
15544 }
15545
nl80211_set_multicast_to_unicast(struct sk_buff * skb,struct genl_info * info)15546 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15547 struct genl_info *info)
15548 {
15549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15550 struct net_device *dev = info->user_ptr[1];
15551 struct wireless_dev *wdev = dev->ieee80211_ptr;
15552 const struct nlattr *nla;
15553 bool enabled;
15554
15555 if (!rdev->ops->set_multicast_to_unicast)
15556 return -EOPNOTSUPP;
15557
15558 if (wdev->iftype != NL80211_IFTYPE_AP &&
15559 wdev->iftype != NL80211_IFTYPE_P2P_GO)
15560 return -EOPNOTSUPP;
15561
15562 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15563 enabled = nla_get_flag(nla);
15564
15565 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15566 }
15567
nl80211_set_pmk(struct sk_buff * skb,struct genl_info * info)15568 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15569 {
15570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15571 struct net_device *dev = info->user_ptr[1];
15572 struct wireless_dev *wdev = dev->ieee80211_ptr;
15573 struct cfg80211_pmk_conf pmk_conf = {};
15574 int ret;
15575
15576 if (wdev->iftype != NL80211_IFTYPE_STATION &&
15577 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15578 return -EOPNOTSUPP;
15579
15580 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15581 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15582 return -EOPNOTSUPP;
15583
15584 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15585 return -EINVAL;
15586
15587 wdev_lock(wdev);
15588 if (!wdev->connected) {
15589 ret = -ENOTCONN;
15590 goto out;
15591 }
15592
15593 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15594 if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15595 ret = -EINVAL;
15596 goto out;
15597 }
15598
15599 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15600 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15601 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15602 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15603 ret = -EINVAL;
15604 goto out;
15605 }
15606
15607 if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15608 pmk_conf.pmk_r0_name =
15609 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15610
15611 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15612 out:
15613 wdev_unlock(wdev);
15614 return ret;
15615 }
15616
nl80211_del_pmk(struct sk_buff * skb,struct genl_info * info)15617 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15618 {
15619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15620 struct net_device *dev = info->user_ptr[1];
15621 struct wireless_dev *wdev = dev->ieee80211_ptr;
15622 const u8 *aa;
15623 int ret;
15624
15625 if (wdev->iftype != NL80211_IFTYPE_STATION &&
15626 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15627 return -EOPNOTSUPP;
15628
15629 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15630 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15631 return -EOPNOTSUPP;
15632
15633 if (!info->attrs[NL80211_ATTR_MAC])
15634 return -EINVAL;
15635
15636 wdev_lock(wdev);
15637 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15638 ret = rdev_del_pmk(rdev, dev, aa);
15639 wdev_unlock(wdev);
15640
15641 return ret;
15642 }
15643
nl80211_external_auth(struct sk_buff * skb,struct genl_info * info)15644 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15645 {
15646 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15647 struct net_device *dev = info->user_ptr[1];
15648 struct cfg80211_external_auth_params params;
15649
15650 if (!rdev->ops->external_auth)
15651 return -EOPNOTSUPP;
15652
15653 if (!info->attrs[NL80211_ATTR_SSID] &&
15654 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15655 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15656 return -EINVAL;
15657
15658 if (!info->attrs[NL80211_ATTR_BSSID])
15659 return -EINVAL;
15660
15661 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15662 return -EINVAL;
15663
15664 memset(¶ms, 0, sizeof(params));
15665
15666 if (info->attrs[NL80211_ATTR_SSID]) {
15667 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15668 if (params.ssid.ssid_len == 0)
15669 return -EINVAL;
15670 memcpy(params.ssid.ssid,
15671 nla_data(info->attrs[NL80211_ATTR_SSID]),
15672 params.ssid.ssid_len);
15673 }
15674
15675 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15676 ETH_ALEN);
15677
15678 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15679
15680 if (info->attrs[NL80211_ATTR_PMKID])
15681 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15682
15683 return rdev_external_auth(rdev, dev, ¶ms);
15684 }
15685
nl80211_tx_control_port(struct sk_buff * skb,struct genl_info * info)15686 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15687 {
15688 bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15690 struct net_device *dev = info->user_ptr[1];
15691 struct wireless_dev *wdev = dev->ieee80211_ptr;
15692 const u8 *buf;
15693 size_t len;
15694 u8 *dest;
15695 u16 proto;
15696 bool noencrypt;
15697 u64 cookie = 0;
15698 int link_id;
15699 int err;
15700
15701 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15702 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15703 return -EOPNOTSUPP;
15704
15705 if (!rdev->ops->tx_control_port)
15706 return -EOPNOTSUPP;
15707
15708 if (!info->attrs[NL80211_ATTR_FRAME] ||
15709 !info->attrs[NL80211_ATTR_MAC] ||
15710 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15711 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15712 return -EINVAL;
15713 }
15714
15715 wdev_lock(wdev);
15716
15717 switch (wdev->iftype) {
15718 case NL80211_IFTYPE_AP:
15719 case NL80211_IFTYPE_P2P_GO:
15720 case NL80211_IFTYPE_MESH_POINT:
15721 break;
15722 case NL80211_IFTYPE_ADHOC:
15723 if (wdev->u.ibss.current_bss)
15724 break;
15725 err = -ENOTCONN;
15726 goto out;
15727 case NL80211_IFTYPE_STATION:
15728 case NL80211_IFTYPE_P2P_CLIENT:
15729 if (wdev->connected)
15730 break;
15731 err = -ENOTCONN;
15732 goto out;
15733 default:
15734 err = -EOPNOTSUPP;
15735 goto out;
15736 }
15737
15738 wdev_unlock(wdev);
15739
15740 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15741 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15742 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15743 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15744 noencrypt =
15745 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15746
15747 link_id = nl80211_link_id_or_invalid(info->attrs);
15748
15749 err = rdev_tx_control_port(rdev, dev, buf, len,
15750 dest, cpu_to_be16(proto), noencrypt, link_id,
15751 dont_wait_for_ack ? NULL : &cookie);
15752 if (!err && !dont_wait_for_ack)
15753 nl_set_extack_cookie_u64(info->extack, cookie);
15754 return err;
15755 out:
15756 wdev_unlock(wdev);
15757 return err;
15758 }
15759
nl80211_get_ftm_responder_stats(struct sk_buff * skb,struct genl_info * info)15760 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15761 struct genl_info *info)
15762 {
15763 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15764 struct net_device *dev = info->user_ptr[1];
15765 struct wireless_dev *wdev = dev->ieee80211_ptr;
15766 struct cfg80211_ftm_responder_stats ftm_stats = {};
15767 unsigned int link_id = nl80211_link_id(info->attrs);
15768 struct sk_buff *msg;
15769 void *hdr;
15770 struct nlattr *ftm_stats_attr;
15771 int err;
15772
15773 if (wdev->iftype != NL80211_IFTYPE_AP ||
15774 !wdev->links[link_id].ap.beacon_interval)
15775 return -EOPNOTSUPP;
15776
15777 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15778 if (err)
15779 return err;
15780
15781 if (!ftm_stats.filled)
15782 return -ENODATA;
15783
15784 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15785 if (!msg)
15786 return -ENOMEM;
15787
15788 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15789 NL80211_CMD_GET_FTM_RESPONDER_STATS);
15790 if (!hdr)
15791 goto nla_put_failure;
15792
15793 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15794 goto nla_put_failure;
15795
15796 ftm_stats_attr = nla_nest_start_noflag(msg,
15797 NL80211_ATTR_FTM_RESPONDER_STATS);
15798 if (!ftm_stats_attr)
15799 goto nla_put_failure;
15800
15801 #define SET_FTM(field, name, type) \
15802 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15803 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
15804 ftm_stats.field)) \
15805 goto nla_put_failure; } while (0)
15806 #define SET_FTM_U64(field, name) \
15807 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15808 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
15809 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
15810 goto nla_put_failure; } while (0)
15811
15812 SET_FTM(success_num, SUCCESS_NUM, u32);
15813 SET_FTM(partial_num, PARTIAL_NUM, u32);
15814 SET_FTM(failed_num, FAILED_NUM, u32);
15815 SET_FTM(asap_num, ASAP_NUM, u32);
15816 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15817 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15818 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15819 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15820 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15821 #undef SET_FTM
15822
15823 nla_nest_end(msg, ftm_stats_attr);
15824
15825 genlmsg_end(msg, hdr);
15826 return genlmsg_reply(msg, info);
15827
15828 nla_put_failure:
15829 nlmsg_free(msg);
15830 return -ENOBUFS;
15831 }
15832
nl80211_update_owe_info(struct sk_buff * skb,struct genl_info * info)15833 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15834 {
15835 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15836 struct cfg80211_update_owe_info owe_info;
15837 struct net_device *dev = info->user_ptr[1];
15838
15839 if (!rdev->ops->update_owe_info)
15840 return -EOPNOTSUPP;
15841
15842 if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15843 !info->attrs[NL80211_ATTR_MAC])
15844 return -EINVAL;
15845
15846 memset(&owe_info, 0, sizeof(owe_info));
15847 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15848 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15849
15850 if (info->attrs[NL80211_ATTR_IE]) {
15851 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15852 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15853 }
15854
15855 return rdev_update_owe_info(rdev, dev, &owe_info);
15856 }
15857
nl80211_probe_mesh_link(struct sk_buff * skb,struct genl_info * info)15858 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15859 {
15860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15861 struct net_device *dev = info->user_ptr[1];
15862 struct wireless_dev *wdev = dev->ieee80211_ptr;
15863 struct station_info sinfo = {};
15864 const u8 *buf;
15865 size_t len;
15866 u8 *dest;
15867 int err;
15868
15869 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15870 return -EOPNOTSUPP;
15871
15872 if (!info->attrs[NL80211_ATTR_MAC] ||
15873 !info->attrs[NL80211_ATTR_FRAME]) {
15874 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15875 return -EINVAL;
15876 }
15877
15878 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15879 return -EOPNOTSUPP;
15880
15881 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15882 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15883 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15884
15885 if (len < sizeof(struct ethhdr))
15886 return -EINVAL;
15887
15888 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15889 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15890 return -EINVAL;
15891
15892 err = rdev_get_station(rdev, dev, dest, &sinfo);
15893 if (err)
15894 return err;
15895
15896 cfg80211_sinfo_release_content(&sinfo);
15897
15898 return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15899 }
15900
parse_tid_conf(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct net_device * dev,struct cfg80211_tid_cfg * tid_conf,struct genl_info * info,const u8 * peer,unsigned int link_id)15901 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15902 struct nlattr *attrs[], struct net_device *dev,
15903 struct cfg80211_tid_cfg *tid_conf,
15904 struct genl_info *info, const u8 *peer,
15905 unsigned int link_id)
15906 {
15907 struct netlink_ext_ack *extack = info->extack;
15908 u64 mask;
15909 int err;
15910
15911 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15912 return -EINVAL;
15913
15914 tid_conf->config_override =
15915 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15916 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15917
15918 if (tid_conf->config_override) {
15919 if (rdev->ops->reset_tid_config) {
15920 err = rdev_reset_tid_config(rdev, dev, peer,
15921 tid_conf->tids);
15922 if (err)
15923 return err;
15924 } else {
15925 return -EINVAL;
15926 }
15927 }
15928
15929 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15930 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15931 tid_conf->noack =
15932 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15933 }
15934
15935 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15936 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15937 tid_conf->retry_short =
15938 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15939
15940 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15941 return -EINVAL;
15942 }
15943
15944 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15945 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15946 tid_conf->retry_long =
15947 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15948
15949 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15950 return -EINVAL;
15951 }
15952
15953 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15954 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15955 tid_conf->ampdu =
15956 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15957 }
15958
15959 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15960 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15961 tid_conf->rtscts =
15962 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15963 }
15964
15965 if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15966 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15967 tid_conf->amsdu =
15968 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15969 }
15970
15971 if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15972 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15973
15974 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15975
15976 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15977 attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15978 err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15979 &tid_conf->txrate_mask, dev,
15980 true, link_id);
15981 if (err)
15982 return err;
15983
15984 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15985 }
15986 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15987 }
15988
15989 if (peer)
15990 mask = rdev->wiphy.tid_config_support.peer;
15991 else
15992 mask = rdev->wiphy.tid_config_support.vif;
15993
15994 if (tid_conf->mask & ~mask) {
15995 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15996 return -ENOTSUPP;
15997 }
15998
15999 return 0;
16000 }
16001
nl80211_set_tid_config(struct sk_buff * skb,struct genl_info * info)16002 static int nl80211_set_tid_config(struct sk_buff *skb,
16003 struct genl_info *info)
16004 {
16005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16006 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
16007 unsigned int link_id = nl80211_link_id(info->attrs);
16008 struct net_device *dev = info->user_ptr[1];
16009 struct cfg80211_tid_config *tid_config;
16010 struct nlattr *tid;
16011 int conf_idx = 0, rem_conf;
16012 int ret = -EINVAL;
16013 u32 num_conf = 0;
16014
16015 if (!info->attrs[NL80211_ATTR_TID_CONFIG])
16016 return -EINVAL;
16017
16018 if (!rdev->ops->set_tid_config)
16019 return -EOPNOTSUPP;
16020
16021 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
16022 rem_conf)
16023 num_conf++;
16024
16025 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
16026 GFP_KERNEL);
16027 if (!tid_config)
16028 return -ENOMEM;
16029
16030 tid_config->n_tid_conf = num_conf;
16031
16032 if (info->attrs[NL80211_ATTR_MAC])
16033 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
16034
16035 wdev_lock(dev->ieee80211_ptr);
16036
16037 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
16038 rem_conf) {
16039 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
16040 tid, NULL, NULL);
16041
16042 if (ret)
16043 goto bad_tid_conf;
16044
16045 ret = parse_tid_conf(rdev, attrs, dev,
16046 &tid_config->tid_conf[conf_idx],
16047 info, tid_config->peer, link_id);
16048 if (ret)
16049 goto bad_tid_conf;
16050
16051 conf_idx++;
16052 }
16053
16054 ret = rdev_set_tid_config(rdev, dev, tid_config);
16055
16056 bad_tid_conf:
16057 kfree(tid_config);
16058 wdev_unlock(dev->ieee80211_ptr);
16059 return ret;
16060 }
16061
nl80211_color_change(struct sk_buff * skb,struct genl_info * info)16062 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
16063 {
16064 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16065 struct cfg80211_color_change_settings params = {};
16066 struct net_device *dev = info->user_ptr[1];
16067 struct wireless_dev *wdev = dev->ieee80211_ptr;
16068 struct nlattr **tb;
16069 u16 offset;
16070 int err;
16071
16072 if (!rdev->ops->color_change)
16073 return -EOPNOTSUPP;
16074
16075 if (!wiphy_ext_feature_isset(&rdev->wiphy,
16076 NL80211_EXT_FEATURE_BSS_COLOR))
16077 return -EOPNOTSUPP;
16078
16079 if (wdev->iftype != NL80211_IFTYPE_AP)
16080 return -EOPNOTSUPP;
16081
16082 if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
16083 !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
16084 !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
16085 return -EINVAL;
16086
16087 params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
16088 params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
16089
16090 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_next,
16091 info->extack);
16092 if (err)
16093 return err;
16094
16095 tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
16096 if (!tb)
16097 return -ENOMEM;
16098
16099 err = nla_parse_nested(tb, NL80211_ATTR_MAX,
16100 info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
16101 nl80211_policy, info->extack);
16102 if (err)
16103 goto out;
16104
16105 err = nl80211_parse_beacon(rdev, tb, ¶ms.beacon_color_change,
16106 info->extack);
16107 if (err)
16108 goto out;
16109
16110 if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
16111 err = -EINVAL;
16112 goto out;
16113 }
16114
16115 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
16116 err = -EINVAL;
16117 goto out;
16118 }
16119
16120 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
16121 if (offset >= params.beacon_color_change.tail_len) {
16122 err = -EINVAL;
16123 goto out;
16124 }
16125
16126 if (params.beacon_color_change.tail[offset] != params.count) {
16127 err = -EINVAL;
16128 goto out;
16129 }
16130
16131 params.counter_offset_beacon = offset;
16132
16133 if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
16134 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
16135 sizeof(u16)) {
16136 err = -EINVAL;
16137 goto out;
16138 }
16139
16140 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
16141 if (offset >= params.beacon_color_change.probe_resp_len) {
16142 err = -EINVAL;
16143 goto out;
16144 }
16145
16146 if (params.beacon_color_change.probe_resp[offset] !=
16147 params.count) {
16148 err = -EINVAL;
16149 goto out;
16150 }
16151
16152 params.counter_offset_presp = offset;
16153 }
16154
16155 wdev_lock(wdev);
16156 err = rdev_color_change(rdev, dev, ¶ms);
16157 wdev_unlock(wdev);
16158
16159 out:
16160 kfree(params.beacon_next.mbssid_ies);
16161 kfree(params.beacon_color_change.mbssid_ies);
16162 kfree(params.beacon_next.rnr_ies);
16163 kfree(params.beacon_color_change.rnr_ies);
16164 kfree(tb);
16165 return err;
16166 }
16167
nl80211_set_fils_aad(struct sk_buff * skb,struct genl_info * info)16168 static int nl80211_set_fils_aad(struct sk_buff *skb,
16169 struct genl_info *info)
16170 {
16171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16172 struct net_device *dev = info->user_ptr[1];
16173 struct cfg80211_fils_aad fils_aad = {};
16174 u8 *nonces;
16175
16176 if (!info->attrs[NL80211_ATTR_MAC] ||
16177 !info->attrs[NL80211_ATTR_FILS_KEK] ||
16178 !info->attrs[NL80211_ATTR_FILS_NONCES])
16179 return -EINVAL;
16180
16181 fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16182 fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
16183 fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
16184 nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
16185 fils_aad.snonce = nonces;
16186 fils_aad.anonce = nonces + FILS_NONCE_LEN;
16187
16188 return rdev_set_fils_aad(rdev, dev, &fils_aad);
16189 }
16190
nl80211_add_link(struct sk_buff * skb,struct genl_info * info)16191 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
16192 {
16193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16194 unsigned int link_id = nl80211_link_id(info->attrs);
16195 struct net_device *dev = info->user_ptr[1];
16196 struct wireless_dev *wdev = dev->ieee80211_ptr;
16197 int ret;
16198
16199 if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
16200 return -EINVAL;
16201
16202 switch (wdev->iftype) {
16203 case NL80211_IFTYPE_AP:
16204 break;
16205 default:
16206 return -EINVAL;
16207 }
16208
16209 if (!info->attrs[NL80211_ATTR_MAC] ||
16210 !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
16211 return -EINVAL;
16212
16213 wdev_lock(wdev);
16214 wdev->valid_links |= BIT(link_id);
16215 ether_addr_copy(wdev->links[link_id].addr,
16216 nla_data(info->attrs[NL80211_ATTR_MAC]));
16217
16218 ret = rdev_add_intf_link(rdev, wdev, link_id);
16219 if (ret) {
16220 wdev->valid_links &= ~BIT(link_id);
16221 eth_zero_addr(wdev->links[link_id].addr);
16222 }
16223 wdev_unlock(wdev);
16224
16225 return ret;
16226 }
16227
nl80211_remove_link(struct sk_buff * skb,struct genl_info * info)16228 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
16229 {
16230 unsigned int link_id = nl80211_link_id(info->attrs);
16231 struct net_device *dev = info->user_ptr[1];
16232 struct wireless_dev *wdev = dev->ieee80211_ptr;
16233
16234 /* cannot remove if there's no link */
16235 if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16236 return -EINVAL;
16237
16238 switch (wdev->iftype) {
16239 case NL80211_IFTYPE_AP:
16240 break;
16241 default:
16242 return -EINVAL;
16243 }
16244
16245 wdev_lock(wdev);
16246 cfg80211_remove_link(wdev, link_id);
16247 wdev_unlock(wdev);
16248
16249 return 0;
16250 }
16251
16252 static int
nl80211_add_mod_link_station(struct sk_buff * skb,struct genl_info * info,bool add)16253 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
16254 bool add)
16255 {
16256 struct link_station_parameters params = {};
16257 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16258 struct net_device *dev = info->user_ptr[1];
16259 int err;
16260
16261 if ((add && !rdev->ops->add_link_station) ||
16262 (!add && !rdev->ops->mod_link_station))
16263 return -EOPNOTSUPP;
16264
16265 if (add && !info->attrs[NL80211_ATTR_MAC])
16266 return -EINVAL;
16267
16268 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
16269 return -EINVAL;
16270
16271 if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
16272 return -EINVAL;
16273
16274 params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16275
16276 if (info->attrs[NL80211_ATTR_MAC]) {
16277 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
16278 if (!is_valid_ether_addr(params.link_mac))
16279 return -EINVAL;
16280 }
16281
16282 if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16283 return -EINVAL;
16284
16285 params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16286
16287 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
16288 params.supported_rates =
16289 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16290 params.supported_rates_len =
16291 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16292 }
16293
16294 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
16295 params.ht_capa =
16296 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
16297
16298 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
16299 params.vht_capa =
16300 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
16301
16302 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
16303 params.he_capa =
16304 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16305 params.he_capa_len =
16306 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16307
16308 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
16309 params.eht_capa =
16310 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16311 params.eht_capa_len =
16312 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16313
16314 if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
16315 (const u8 *)params.eht_capa,
16316 params.eht_capa_len,
16317 false))
16318 return -EINVAL;
16319 }
16320 }
16321
16322 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
16323 params.he_6ghz_capa =
16324 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
16325
16326 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16327 params.opmode_notif_used = true;
16328 params.opmode_notif =
16329 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16330 }
16331
16332 err = nl80211_parse_sta_txpower_setting(info, ¶ms.txpwr,
16333 ¶ms.txpwr_set);
16334 if (err)
16335 return err;
16336
16337 wdev_lock(dev->ieee80211_ptr);
16338 if (add)
16339 err = rdev_add_link_station(rdev, dev, ¶ms);
16340 else
16341 err = rdev_mod_link_station(rdev, dev, ¶ms);
16342 wdev_unlock(dev->ieee80211_ptr);
16343
16344 return err;
16345 }
16346
16347 static int
nl80211_add_link_station(struct sk_buff * skb,struct genl_info * info)16348 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16349 {
16350 return nl80211_add_mod_link_station(skb, info, true);
16351 }
16352
16353 static int
nl80211_modify_link_station(struct sk_buff * skb,struct genl_info * info)16354 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16355 {
16356 return nl80211_add_mod_link_station(skb, info, false);
16357 }
16358
16359 static int
nl80211_remove_link_station(struct sk_buff * skb,struct genl_info * info)16360 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16361 {
16362 struct link_station_del_parameters params = {};
16363 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16364 struct net_device *dev = info->user_ptr[1];
16365 int ret;
16366
16367 if (!rdev->ops->del_link_station)
16368 return -EOPNOTSUPP;
16369
16370 if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16371 !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16372 return -EINVAL;
16373
16374 params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16375 params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16376
16377 wdev_lock(dev->ieee80211_ptr);
16378 ret = rdev_del_link_station(rdev, dev, ¶ms);
16379 wdev_unlock(dev->ieee80211_ptr);
16380
16381 return ret;
16382 }
16383
nl80211_set_hw_timestamp(struct sk_buff * skb,struct genl_info * info)16384 static int nl80211_set_hw_timestamp(struct sk_buff *skb,
16385 struct genl_info *info)
16386 {
16387 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16388 struct net_device *dev = info->user_ptr[1];
16389 struct cfg80211_set_hw_timestamp hwts = {};
16390
16391 if (!rdev->wiphy.hw_timestamp_max_peers)
16392 return -EOPNOTSUPP;
16393
16394 if (!info->attrs[NL80211_ATTR_MAC] &&
16395 rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS)
16396 return -EOPNOTSUPP;
16397
16398 if (info->attrs[NL80211_ATTR_MAC])
16399 hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16400
16401 hwts.enable =
16402 nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]);
16403
16404 return rdev_set_hw_timestamp(rdev, dev, &hwts);
16405 }
16406
16407 #define NL80211_FLAG_NEED_WIPHY 0x01
16408 #define NL80211_FLAG_NEED_NETDEV 0x02
16409 #define NL80211_FLAG_NEED_RTNL 0x04
16410 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
16411 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
16412 NL80211_FLAG_CHECK_NETDEV_UP)
16413 #define NL80211_FLAG_NEED_WDEV 0x10
16414 /* If a netdev is associated, it must be UP, P2P must be started */
16415 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
16416 NL80211_FLAG_CHECK_NETDEV_UP)
16417 #define NL80211_FLAG_CLEAR_SKB 0x20
16418 #define NL80211_FLAG_NO_WIPHY_MTX 0x40
16419 #define NL80211_FLAG_MLO_VALID_LINK_ID 0x80
16420 #define NL80211_FLAG_MLO_UNSUPPORTED 0x100
16421
16422 #define INTERNAL_FLAG_SELECTORS(__sel) \
16423 SELECTOR(__sel, NONE, 0) /* must be first */ \
16424 SELECTOR(__sel, WIPHY, \
16425 NL80211_FLAG_NEED_WIPHY) \
16426 SELECTOR(__sel, WDEV, \
16427 NL80211_FLAG_NEED_WDEV) \
16428 SELECTOR(__sel, NETDEV, \
16429 NL80211_FLAG_NEED_NETDEV) \
16430 SELECTOR(__sel, NETDEV_LINK, \
16431 NL80211_FLAG_NEED_NETDEV | \
16432 NL80211_FLAG_MLO_VALID_LINK_ID) \
16433 SELECTOR(__sel, NETDEV_NO_MLO, \
16434 NL80211_FLAG_NEED_NETDEV | \
16435 NL80211_FLAG_MLO_UNSUPPORTED) \
16436 SELECTOR(__sel, WIPHY_RTNL, \
16437 NL80211_FLAG_NEED_WIPHY | \
16438 NL80211_FLAG_NEED_RTNL) \
16439 SELECTOR(__sel, WIPHY_RTNL_NOMTX, \
16440 NL80211_FLAG_NEED_WIPHY | \
16441 NL80211_FLAG_NEED_RTNL | \
16442 NL80211_FLAG_NO_WIPHY_MTX) \
16443 SELECTOR(__sel, WDEV_RTNL, \
16444 NL80211_FLAG_NEED_WDEV | \
16445 NL80211_FLAG_NEED_RTNL) \
16446 SELECTOR(__sel, NETDEV_RTNL, \
16447 NL80211_FLAG_NEED_NETDEV | \
16448 NL80211_FLAG_NEED_RTNL) \
16449 SELECTOR(__sel, NETDEV_UP, \
16450 NL80211_FLAG_NEED_NETDEV_UP) \
16451 SELECTOR(__sel, NETDEV_UP_LINK, \
16452 NL80211_FLAG_NEED_NETDEV_UP | \
16453 NL80211_FLAG_MLO_VALID_LINK_ID) \
16454 SELECTOR(__sel, NETDEV_UP_NO_MLO, \
16455 NL80211_FLAG_NEED_NETDEV_UP | \
16456 NL80211_FLAG_MLO_UNSUPPORTED) \
16457 SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR, \
16458 NL80211_FLAG_NEED_NETDEV_UP | \
16459 NL80211_FLAG_CLEAR_SKB | \
16460 NL80211_FLAG_MLO_UNSUPPORTED) \
16461 SELECTOR(__sel, NETDEV_UP_NOTMX, \
16462 NL80211_FLAG_NEED_NETDEV_UP | \
16463 NL80211_FLAG_NO_WIPHY_MTX) \
16464 SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO, \
16465 NL80211_FLAG_NEED_NETDEV_UP | \
16466 NL80211_FLAG_NO_WIPHY_MTX | \
16467 NL80211_FLAG_MLO_UNSUPPORTED) \
16468 SELECTOR(__sel, NETDEV_UP_CLEAR, \
16469 NL80211_FLAG_NEED_NETDEV_UP | \
16470 NL80211_FLAG_CLEAR_SKB) \
16471 SELECTOR(__sel, WDEV_UP, \
16472 NL80211_FLAG_NEED_WDEV_UP) \
16473 SELECTOR(__sel, WDEV_UP_LINK, \
16474 NL80211_FLAG_NEED_WDEV_UP | \
16475 NL80211_FLAG_MLO_VALID_LINK_ID) \
16476 SELECTOR(__sel, WDEV_UP_RTNL, \
16477 NL80211_FLAG_NEED_WDEV_UP | \
16478 NL80211_FLAG_NEED_RTNL) \
16479 SELECTOR(__sel, WIPHY_CLEAR, \
16480 NL80211_FLAG_NEED_WIPHY | \
16481 NL80211_FLAG_CLEAR_SKB)
16482
16483 enum nl80211_internal_flags_selector {
16484 #define SELECTOR(_, name, value) NL80211_IFL_SEL_##name,
16485 INTERNAL_FLAG_SELECTORS(_)
16486 #undef SELECTOR
16487 };
16488
16489 static u32 nl80211_internal_flags[] = {
16490 #define SELECTOR(_, name, value) [NL80211_IFL_SEL_##name] = value,
16491 INTERNAL_FLAG_SELECTORS(_)
16492 #undef SELECTOR
16493 };
16494
nl80211_pre_doit(const struct genl_split_ops * ops,struct sk_buff * skb,struct genl_info * info)16495 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16496 struct sk_buff *skb,
16497 struct genl_info *info)
16498 {
16499 struct cfg80211_registered_device *rdev = NULL;
16500 struct wireless_dev *wdev = NULL;
16501 struct net_device *dev = NULL;
16502 u32 internal_flags;
16503 int err;
16504
16505 if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16506 return -EINVAL;
16507
16508 internal_flags = nl80211_internal_flags[ops->internal_flags];
16509
16510 rtnl_lock();
16511 if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16512 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16513 if (IS_ERR(rdev)) {
16514 err = PTR_ERR(rdev);
16515 goto out_unlock;
16516 }
16517 info->user_ptr[0] = rdev;
16518 } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16519 internal_flags & NL80211_FLAG_NEED_WDEV) {
16520 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16521 info->attrs);
16522 if (IS_ERR(wdev)) {
16523 err = PTR_ERR(wdev);
16524 goto out_unlock;
16525 }
16526
16527 dev = wdev->netdev;
16528 dev_hold(dev);
16529 rdev = wiphy_to_rdev(wdev->wiphy);
16530
16531 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16532 if (!dev) {
16533 err = -EINVAL;
16534 goto out_unlock;
16535 }
16536
16537 info->user_ptr[1] = dev;
16538 } else {
16539 info->user_ptr[1] = wdev;
16540 }
16541
16542 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16543 !wdev_running(wdev)) {
16544 err = -ENETDOWN;
16545 goto out_unlock;
16546 }
16547
16548 info->user_ptr[0] = rdev;
16549 }
16550
16551 if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16552 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16553
16554 if (!wdev) {
16555 err = -EINVAL;
16556 goto out_unlock;
16557 }
16558
16559 /* MLO -> require valid link ID */
16560 if (wdev->valid_links &&
16561 (!link_id ||
16562 !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16563 err = -EINVAL;
16564 goto out_unlock;
16565 }
16566
16567 /* non-MLO -> no link ID attribute accepted */
16568 if (!wdev->valid_links && link_id) {
16569 err = -EINVAL;
16570 goto out_unlock;
16571 }
16572 }
16573
16574 if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16575 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16576 (wdev && wdev->valid_links)) {
16577 err = -EINVAL;
16578 goto out_unlock;
16579 }
16580 }
16581
16582 if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16583 wiphy_lock(&rdev->wiphy);
16584 /* we keep the mutex locked until post_doit */
16585 __release(&rdev->wiphy.mtx);
16586 }
16587 if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16588 rtnl_unlock();
16589
16590 return 0;
16591 out_unlock:
16592 rtnl_unlock();
16593 dev_put(dev);
16594 return err;
16595 }
16596
nl80211_post_doit(const struct genl_split_ops * ops,struct sk_buff * skb,struct genl_info * info)16597 static void nl80211_post_doit(const struct genl_split_ops *ops,
16598 struct sk_buff *skb,
16599 struct genl_info *info)
16600 {
16601 u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16602
16603 if (info->user_ptr[1]) {
16604 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16605 struct wireless_dev *wdev = info->user_ptr[1];
16606
16607 dev_put(wdev->netdev);
16608 } else {
16609 dev_put(info->user_ptr[1]);
16610 }
16611 }
16612
16613 if (info->user_ptr[0] &&
16614 !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16615 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16616
16617 /* we kept the mutex locked since pre_doit */
16618 __acquire(&rdev->wiphy.mtx);
16619 wiphy_unlock(&rdev->wiphy);
16620 }
16621
16622 if (internal_flags & NL80211_FLAG_NEED_RTNL)
16623 rtnl_unlock();
16624
16625 /* If needed, clear the netlink message payload from the SKB
16626 * as it might contain key data that shouldn't stick around on
16627 * the heap after the SKB is freed. The netlink message header
16628 * is still needed for further processing, so leave it intact.
16629 */
16630 if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16631 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16632
16633 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16634 }
16635 }
16636
nl80211_set_sar_sub_specs(struct cfg80211_registered_device * rdev,struct cfg80211_sar_specs * sar_specs,struct nlattr * spec[],int index)16637 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16638 struct cfg80211_sar_specs *sar_specs,
16639 struct nlattr *spec[], int index)
16640 {
16641 u32 range_index, i;
16642
16643 if (!sar_specs || !spec)
16644 return -EINVAL;
16645
16646 if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16647 !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16648 return -EINVAL;
16649
16650 range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16651
16652 /* check if range_index exceeds num_freq_ranges */
16653 if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16654 return -EINVAL;
16655
16656 /* check if range_index duplicates */
16657 for (i = 0; i < index; i++) {
16658 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16659 return -EINVAL;
16660 }
16661
16662 sar_specs->sub_specs[index].power =
16663 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16664
16665 sar_specs->sub_specs[index].freq_range_index = range_index;
16666
16667 return 0;
16668 }
16669
nl80211_set_sar_specs(struct sk_buff * skb,struct genl_info * info)16670 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16671 {
16672 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16673 struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16674 struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16675 struct cfg80211_sar_specs *sar_spec;
16676 enum nl80211_sar_type type;
16677 struct nlattr *spec_list;
16678 u32 specs;
16679 int rem, err;
16680
16681 if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16682 return -EOPNOTSUPP;
16683
16684 if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16685 return -EINVAL;
16686
16687 nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16688 info->attrs[NL80211_ATTR_SAR_SPEC],
16689 NULL, NULL);
16690
16691 if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16692 return -EINVAL;
16693
16694 type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16695 if (type != rdev->wiphy.sar_capa->type)
16696 return -EINVAL;
16697
16698 specs = 0;
16699 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16700 specs++;
16701
16702 if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16703 return -EINVAL;
16704
16705 sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16706 if (!sar_spec)
16707 return -ENOMEM;
16708
16709 sar_spec->type = type;
16710 specs = 0;
16711 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16712 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16713 spec_list, NULL, NULL);
16714
16715 switch (type) {
16716 case NL80211_SAR_TYPE_POWER:
16717 if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16718 spec, specs)) {
16719 err = -EINVAL;
16720 goto error;
16721 }
16722 break;
16723 default:
16724 err = -EINVAL;
16725 goto error;
16726 }
16727 specs++;
16728 }
16729
16730 sar_spec->num_sub_specs = specs;
16731
16732 rdev->cur_cmd_info = info;
16733 err = rdev_set_sar_specs(rdev, sar_spec);
16734 rdev->cur_cmd_info = NULL;
16735 error:
16736 kfree(sar_spec);
16737 return err;
16738 }
16739
16740 #define SELECTOR(__sel, name, value) \
16741 ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16742 int __missing_selector(void);
16743 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16744
16745 static const struct genl_ops nl80211_ops[] = {
16746 {
16747 .cmd = NL80211_CMD_GET_WIPHY,
16748 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16749 .doit = nl80211_get_wiphy,
16750 .dumpit = nl80211_dump_wiphy,
16751 .done = nl80211_dump_wiphy_done,
16752 /* can be retrieved by unprivileged users */
16753 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16754 },
16755 };
16756
16757 static const struct genl_small_ops nl80211_small_ops[] = {
16758 {
16759 .cmd = NL80211_CMD_SET_WIPHY,
16760 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16761 .doit = nl80211_set_wiphy,
16762 .flags = GENL_UNS_ADMIN_PERM,
16763 },
16764 {
16765 .cmd = NL80211_CMD_GET_INTERFACE,
16766 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16767 .doit = nl80211_get_interface,
16768 .dumpit = nl80211_dump_interface,
16769 /* can be retrieved by unprivileged users */
16770 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16771 },
16772 {
16773 .cmd = NL80211_CMD_SET_INTERFACE,
16774 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16775 .doit = nl80211_set_interface,
16776 .flags = GENL_UNS_ADMIN_PERM,
16777 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16778 NL80211_FLAG_NEED_RTNL),
16779 },
16780 {
16781 .cmd = NL80211_CMD_NEW_INTERFACE,
16782 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16783 .doit = nl80211_new_interface,
16784 .flags = GENL_UNS_ADMIN_PERM,
16785 .internal_flags =
16786 IFLAGS(NL80211_FLAG_NEED_WIPHY |
16787 NL80211_FLAG_NEED_RTNL |
16788 /* we take the wiphy mutex later ourselves */
16789 NL80211_FLAG_NO_WIPHY_MTX),
16790 },
16791 {
16792 .cmd = NL80211_CMD_DEL_INTERFACE,
16793 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16794 .doit = nl80211_del_interface,
16795 .flags = GENL_UNS_ADMIN_PERM,
16796 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16797 NL80211_FLAG_NEED_RTNL),
16798 },
16799 {
16800 .cmd = NL80211_CMD_GET_KEY,
16801 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16802 .doit = nl80211_get_key,
16803 .flags = GENL_UNS_ADMIN_PERM,
16804 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16805 },
16806 {
16807 .cmd = NL80211_CMD_SET_KEY,
16808 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16809 .doit = nl80211_set_key,
16810 .flags = GENL_UNS_ADMIN_PERM,
16811 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16812 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16813 NL80211_FLAG_CLEAR_SKB),
16814 },
16815 {
16816 .cmd = NL80211_CMD_NEW_KEY,
16817 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16818 .doit = nl80211_new_key,
16819 .flags = GENL_UNS_ADMIN_PERM,
16820 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16821 NL80211_FLAG_CLEAR_SKB),
16822 },
16823 {
16824 .cmd = NL80211_CMD_DEL_KEY,
16825 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16826 .doit = nl80211_del_key,
16827 .flags = GENL_UNS_ADMIN_PERM,
16828 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16829 },
16830 {
16831 .cmd = NL80211_CMD_SET_BEACON,
16832 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16833 .flags = GENL_UNS_ADMIN_PERM,
16834 .doit = nl80211_set_beacon,
16835 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16836 NL80211_FLAG_MLO_VALID_LINK_ID),
16837 },
16838 {
16839 .cmd = NL80211_CMD_START_AP,
16840 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16841 .flags = GENL_UNS_ADMIN_PERM,
16842 .doit = nl80211_start_ap,
16843 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16844 NL80211_FLAG_MLO_VALID_LINK_ID),
16845 },
16846 {
16847 .cmd = NL80211_CMD_STOP_AP,
16848 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16849 .flags = GENL_UNS_ADMIN_PERM,
16850 .doit = nl80211_stop_ap,
16851 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16852 NL80211_FLAG_MLO_VALID_LINK_ID),
16853 },
16854 {
16855 .cmd = NL80211_CMD_GET_STATION,
16856 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16857 .doit = nl80211_get_station,
16858 .dumpit = nl80211_dump_station,
16859 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16860 },
16861 {
16862 .cmd = NL80211_CMD_SET_STATION,
16863 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16864 .doit = nl80211_set_station,
16865 .flags = GENL_UNS_ADMIN_PERM,
16866 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16867 },
16868 {
16869 .cmd = NL80211_CMD_NEW_STATION,
16870 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16871 .doit = nl80211_new_station,
16872 .flags = GENL_UNS_ADMIN_PERM,
16873 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16874 },
16875 {
16876 .cmd = NL80211_CMD_DEL_STATION,
16877 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16878 .doit = nl80211_del_station,
16879 .flags = GENL_UNS_ADMIN_PERM,
16880 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16881 },
16882 {
16883 .cmd = NL80211_CMD_GET_MPATH,
16884 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16885 .doit = nl80211_get_mpath,
16886 .dumpit = nl80211_dump_mpath,
16887 .flags = GENL_UNS_ADMIN_PERM,
16888 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16889 },
16890 {
16891 .cmd = NL80211_CMD_GET_MPP,
16892 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16893 .doit = nl80211_get_mpp,
16894 .dumpit = nl80211_dump_mpp,
16895 .flags = GENL_UNS_ADMIN_PERM,
16896 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16897 },
16898 {
16899 .cmd = NL80211_CMD_SET_MPATH,
16900 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16901 .doit = nl80211_set_mpath,
16902 .flags = GENL_UNS_ADMIN_PERM,
16903 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16904 },
16905 {
16906 .cmd = NL80211_CMD_NEW_MPATH,
16907 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16908 .doit = nl80211_new_mpath,
16909 .flags = GENL_UNS_ADMIN_PERM,
16910 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16911 },
16912 {
16913 .cmd = NL80211_CMD_DEL_MPATH,
16914 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16915 .doit = nl80211_del_mpath,
16916 .flags = GENL_UNS_ADMIN_PERM,
16917 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16918 },
16919 {
16920 .cmd = NL80211_CMD_SET_BSS,
16921 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16922 .doit = nl80211_set_bss,
16923 .flags = GENL_UNS_ADMIN_PERM,
16924 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16925 NL80211_FLAG_MLO_VALID_LINK_ID),
16926 },
16927 {
16928 .cmd = NL80211_CMD_GET_REG,
16929 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16930 .doit = nl80211_get_reg_do,
16931 .dumpit = nl80211_get_reg_dump,
16932 /* can be retrieved by unprivileged users */
16933 },
16934 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16935 {
16936 .cmd = NL80211_CMD_SET_REG,
16937 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16938 .doit = nl80211_set_reg,
16939 .flags = GENL_ADMIN_PERM,
16940 },
16941 #endif
16942 {
16943 .cmd = NL80211_CMD_REQ_SET_REG,
16944 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16945 .doit = nl80211_req_set_reg,
16946 .flags = GENL_ADMIN_PERM,
16947 },
16948 {
16949 .cmd = NL80211_CMD_RELOAD_REGDB,
16950 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16951 .doit = nl80211_reload_regdb,
16952 .flags = GENL_ADMIN_PERM,
16953 },
16954 {
16955 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16956 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16957 .doit = nl80211_get_mesh_config,
16958 /* can be retrieved by unprivileged users */
16959 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16960 },
16961 {
16962 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16963 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16964 .doit = nl80211_update_mesh_config,
16965 .flags = GENL_UNS_ADMIN_PERM,
16966 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16967 },
16968 {
16969 .cmd = NL80211_CMD_TRIGGER_SCAN,
16970 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16971 .doit = nl80211_trigger_scan,
16972 .flags = GENL_UNS_ADMIN_PERM,
16973 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16974 },
16975 {
16976 .cmd = NL80211_CMD_ABORT_SCAN,
16977 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16978 .doit = nl80211_abort_scan,
16979 .flags = GENL_UNS_ADMIN_PERM,
16980 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16981 },
16982 {
16983 .cmd = NL80211_CMD_GET_SCAN,
16984 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16985 .dumpit = nl80211_dump_scan,
16986 },
16987 {
16988 .cmd = NL80211_CMD_START_SCHED_SCAN,
16989 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16990 .doit = nl80211_start_sched_scan,
16991 .flags = GENL_UNS_ADMIN_PERM,
16992 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16993 },
16994 {
16995 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16996 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16997 .doit = nl80211_stop_sched_scan,
16998 .flags = GENL_UNS_ADMIN_PERM,
16999 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17000 },
17001 {
17002 .cmd = NL80211_CMD_AUTHENTICATE,
17003 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17004 .doit = nl80211_authenticate,
17005 .flags = GENL_UNS_ADMIN_PERM,
17006 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17007 NL80211_FLAG_CLEAR_SKB),
17008 },
17009 {
17010 .cmd = NL80211_CMD_ASSOCIATE,
17011 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17012 .doit = nl80211_associate,
17013 .flags = GENL_UNS_ADMIN_PERM,
17014 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17015 NL80211_FLAG_CLEAR_SKB),
17016 },
17017 {
17018 .cmd = NL80211_CMD_DEAUTHENTICATE,
17019 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17020 .doit = nl80211_deauthenticate,
17021 .flags = GENL_UNS_ADMIN_PERM,
17022 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17023 },
17024 {
17025 .cmd = NL80211_CMD_DISASSOCIATE,
17026 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17027 .doit = nl80211_disassociate,
17028 .flags = GENL_UNS_ADMIN_PERM,
17029 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17030 },
17031 {
17032 .cmd = NL80211_CMD_JOIN_IBSS,
17033 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17034 .doit = nl80211_join_ibss,
17035 .flags = GENL_UNS_ADMIN_PERM,
17036 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17037 },
17038 {
17039 .cmd = NL80211_CMD_LEAVE_IBSS,
17040 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17041 .doit = nl80211_leave_ibss,
17042 .flags = GENL_UNS_ADMIN_PERM,
17043 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17044 },
17045 #ifdef CONFIG_NL80211_TESTMODE
17046 {
17047 .cmd = NL80211_CMD_TESTMODE,
17048 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17049 .doit = nl80211_testmode_do,
17050 .dumpit = nl80211_testmode_dump,
17051 .flags = GENL_UNS_ADMIN_PERM,
17052 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17053 },
17054 #endif
17055 {
17056 .cmd = NL80211_CMD_CONNECT,
17057 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17058 .doit = nl80211_connect,
17059 .flags = GENL_UNS_ADMIN_PERM,
17060 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17061 NL80211_FLAG_CLEAR_SKB),
17062 },
17063 {
17064 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
17065 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17066 .doit = nl80211_update_connect_params,
17067 .flags = GENL_ADMIN_PERM,
17068 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17069 NL80211_FLAG_CLEAR_SKB),
17070 },
17071 {
17072 .cmd = NL80211_CMD_DISCONNECT,
17073 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17074 .doit = nl80211_disconnect,
17075 .flags = GENL_UNS_ADMIN_PERM,
17076 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17077 },
17078 {
17079 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
17080 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17081 .doit = nl80211_wiphy_netns,
17082 .flags = GENL_UNS_ADMIN_PERM,
17083 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17084 NL80211_FLAG_NEED_RTNL |
17085 NL80211_FLAG_NO_WIPHY_MTX),
17086 },
17087 {
17088 .cmd = NL80211_CMD_GET_SURVEY,
17089 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17090 .dumpit = nl80211_dump_survey,
17091 },
17092 {
17093 .cmd = NL80211_CMD_SET_PMKSA,
17094 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17095 .doit = nl80211_setdel_pmksa,
17096 .flags = GENL_UNS_ADMIN_PERM,
17097 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17098 NL80211_FLAG_CLEAR_SKB),
17099 },
17100 {
17101 .cmd = NL80211_CMD_DEL_PMKSA,
17102 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17103 .doit = nl80211_setdel_pmksa,
17104 .flags = GENL_UNS_ADMIN_PERM,
17105 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17106 },
17107 {
17108 .cmd = NL80211_CMD_FLUSH_PMKSA,
17109 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17110 .doit = nl80211_flush_pmksa,
17111 .flags = GENL_UNS_ADMIN_PERM,
17112 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17113 },
17114 {
17115 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
17116 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17117 .doit = nl80211_remain_on_channel,
17118 .flags = GENL_UNS_ADMIN_PERM,
17119 /* FIXME: requiring a link ID here is probably not good */
17120 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17121 NL80211_FLAG_MLO_VALID_LINK_ID),
17122 },
17123 {
17124 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
17125 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17126 .doit = nl80211_cancel_remain_on_channel,
17127 .flags = GENL_UNS_ADMIN_PERM,
17128 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17129 },
17130 {
17131 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
17132 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17133 .doit = nl80211_set_tx_bitrate_mask,
17134 .flags = GENL_UNS_ADMIN_PERM,
17135 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17136 NL80211_FLAG_MLO_VALID_LINK_ID),
17137 },
17138 {
17139 .cmd = NL80211_CMD_REGISTER_FRAME,
17140 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17141 .doit = nl80211_register_mgmt,
17142 .flags = GENL_UNS_ADMIN_PERM,
17143 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
17144 },
17145 {
17146 .cmd = NL80211_CMD_FRAME,
17147 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17148 .doit = nl80211_tx_mgmt,
17149 .flags = GENL_UNS_ADMIN_PERM,
17150 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17151 },
17152 {
17153 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
17154 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17155 .doit = nl80211_tx_mgmt_cancel_wait,
17156 .flags = GENL_UNS_ADMIN_PERM,
17157 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17158 },
17159 {
17160 .cmd = NL80211_CMD_SET_POWER_SAVE,
17161 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17162 .doit = nl80211_set_power_save,
17163 .flags = GENL_UNS_ADMIN_PERM,
17164 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17165 },
17166 {
17167 .cmd = NL80211_CMD_GET_POWER_SAVE,
17168 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17169 .doit = nl80211_get_power_save,
17170 /* can be retrieved by unprivileged users */
17171 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17172 },
17173 {
17174 .cmd = NL80211_CMD_SET_CQM,
17175 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17176 .doit = nl80211_set_cqm,
17177 .flags = GENL_UNS_ADMIN_PERM,
17178 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17179 },
17180 {
17181 .cmd = NL80211_CMD_SET_CHANNEL,
17182 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17183 .doit = nl80211_set_channel,
17184 .flags = GENL_UNS_ADMIN_PERM,
17185 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17186 NL80211_FLAG_MLO_VALID_LINK_ID),
17187 },
17188 {
17189 .cmd = NL80211_CMD_JOIN_MESH,
17190 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17191 .doit = nl80211_join_mesh,
17192 .flags = GENL_UNS_ADMIN_PERM,
17193 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17194 },
17195 {
17196 .cmd = NL80211_CMD_LEAVE_MESH,
17197 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17198 .doit = nl80211_leave_mesh,
17199 .flags = GENL_UNS_ADMIN_PERM,
17200 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17201 },
17202 {
17203 .cmd = NL80211_CMD_JOIN_OCB,
17204 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17205 .doit = nl80211_join_ocb,
17206 .flags = GENL_UNS_ADMIN_PERM,
17207 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17208 },
17209 {
17210 .cmd = NL80211_CMD_LEAVE_OCB,
17211 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17212 .doit = nl80211_leave_ocb,
17213 .flags = GENL_UNS_ADMIN_PERM,
17214 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17215 },
17216 #ifdef CONFIG_PM
17217 {
17218 .cmd = NL80211_CMD_GET_WOWLAN,
17219 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17220 .doit = nl80211_get_wowlan,
17221 /* can be retrieved by unprivileged users */
17222 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17223 },
17224 {
17225 .cmd = NL80211_CMD_SET_WOWLAN,
17226 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17227 .doit = nl80211_set_wowlan,
17228 .flags = GENL_UNS_ADMIN_PERM,
17229 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17230 },
17231 #endif
17232 {
17233 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
17234 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17235 .doit = nl80211_set_rekey_data,
17236 .flags = GENL_UNS_ADMIN_PERM,
17237 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17238 NL80211_FLAG_CLEAR_SKB),
17239 },
17240 {
17241 .cmd = NL80211_CMD_TDLS_MGMT,
17242 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17243 .doit = nl80211_tdls_mgmt,
17244 .flags = GENL_UNS_ADMIN_PERM,
17245 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17246 NL80211_FLAG_MLO_VALID_LINK_ID),
17247 },
17248 {
17249 .cmd = NL80211_CMD_TDLS_OPER,
17250 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17251 .doit = nl80211_tdls_oper,
17252 .flags = GENL_UNS_ADMIN_PERM,
17253 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17254 },
17255 {
17256 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
17257 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17258 .doit = nl80211_register_unexpected_frame,
17259 .flags = GENL_UNS_ADMIN_PERM,
17260 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17261 },
17262 {
17263 .cmd = NL80211_CMD_PROBE_CLIENT,
17264 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17265 .doit = nl80211_probe_client,
17266 .flags = GENL_UNS_ADMIN_PERM,
17267 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17268 },
17269 {
17270 .cmd = NL80211_CMD_REGISTER_BEACONS,
17271 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17272 .doit = nl80211_register_beacons,
17273 .flags = GENL_UNS_ADMIN_PERM,
17274 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17275 },
17276 {
17277 .cmd = NL80211_CMD_SET_NOACK_MAP,
17278 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17279 .doit = nl80211_set_noack_map,
17280 .flags = GENL_UNS_ADMIN_PERM,
17281 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17282 },
17283 {
17284 .cmd = NL80211_CMD_START_P2P_DEVICE,
17285 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17286 .doit = nl80211_start_p2p_device,
17287 .flags = GENL_UNS_ADMIN_PERM,
17288 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17289 NL80211_FLAG_NEED_RTNL),
17290 },
17291 {
17292 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
17293 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17294 .doit = nl80211_stop_p2p_device,
17295 .flags = GENL_UNS_ADMIN_PERM,
17296 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17297 NL80211_FLAG_NEED_RTNL),
17298 },
17299 {
17300 .cmd = NL80211_CMD_START_NAN,
17301 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17302 .doit = nl80211_start_nan,
17303 .flags = GENL_ADMIN_PERM,
17304 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17305 NL80211_FLAG_NEED_RTNL),
17306 },
17307 {
17308 .cmd = NL80211_CMD_STOP_NAN,
17309 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17310 .doit = nl80211_stop_nan,
17311 .flags = GENL_ADMIN_PERM,
17312 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17313 NL80211_FLAG_NEED_RTNL),
17314 },
17315 {
17316 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
17317 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17318 .doit = nl80211_nan_add_func,
17319 .flags = GENL_ADMIN_PERM,
17320 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17321 },
17322 {
17323 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
17324 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17325 .doit = nl80211_nan_del_func,
17326 .flags = GENL_ADMIN_PERM,
17327 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17328 },
17329 {
17330 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
17331 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17332 .doit = nl80211_nan_change_config,
17333 .flags = GENL_ADMIN_PERM,
17334 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17335 },
17336 {
17337 .cmd = NL80211_CMD_SET_MCAST_RATE,
17338 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17339 .doit = nl80211_set_mcast_rate,
17340 .flags = GENL_UNS_ADMIN_PERM,
17341 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17342 },
17343 {
17344 .cmd = NL80211_CMD_SET_MAC_ACL,
17345 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17346 .doit = nl80211_set_mac_acl,
17347 .flags = GENL_UNS_ADMIN_PERM,
17348 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17349 NL80211_FLAG_MLO_UNSUPPORTED),
17350 },
17351 {
17352 .cmd = NL80211_CMD_RADAR_DETECT,
17353 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17354 .doit = nl80211_start_radar_detection,
17355 .flags = GENL_UNS_ADMIN_PERM,
17356 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17357 NL80211_FLAG_NO_WIPHY_MTX |
17358 NL80211_FLAG_MLO_UNSUPPORTED),
17359 },
17360 {
17361 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17362 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17363 .doit = nl80211_get_protocol_features,
17364 },
17365 {
17366 .cmd = NL80211_CMD_UPDATE_FT_IES,
17367 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17368 .doit = nl80211_update_ft_ies,
17369 .flags = GENL_UNS_ADMIN_PERM,
17370 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17371 },
17372 {
17373 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17374 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17375 .doit = nl80211_crit_protocol_start,
17376 .flags = GENL_UNS_ADMIN_PERM,
17377 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17378 },
17379 {
17380 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17381 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17382 .doit = nl80211_crit_protocol_stop,
17383 .flags = GENL_UNS_ADMIN_PERM,
17384 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17385 },
17386 {
17387 .cmd = NL80211_CMD_GET_COALESCE,
17388 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17389 .doit = nl80211_get_coalesce,
17390 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17391 },
17392 {
17393 .cmd = NL80211_CMD_SET_COALESCE,
17394 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17395 .doit = nl80211_set_coalesce,
17396 .flags = GENL_UNS_ADMIN_PERM,
17397 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17398 },
17399 {
17400 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17401 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17402 .doit = nl80211_channel_switch,
17403 .flags = GENL_UNS_ADMIN_PERM,
17404 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17405 NL80211_FLAG_MLO_VALID_LINK_ID),
17406 },
17407 {
17408 .cmd = NL80211_CMD_VENDOR,
17409 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17410 .doit = nl80211_vendor_cmd,
17411 .dumpit = nl80211_vendor_cmd_dump,
17412 .flags = GENL_UNS_ADMIN_PERM,
17413 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17414 NL80211_FLAG_CLEAR_SKB),
17415 },
17416 {
17417 .cmd = NL80211_CMD_SET_QOS_MAP,
17418 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17419 .doit = nl80211_set_qos_map,
17420 .flags = GENL_UNS_ADMIN_PERM,
17421 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17422 },
17423 {
17424 .cmd = NL80211_CMD_ADD_TX_TS,
17425 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17426 .doit = nl80211_add_tx_ts,
17427 .flags = GENL_UNS_ADMIN_PERM,
17428 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17429 NL80211_FLAG_MLO_UNSUPPORTED),
17430 },
17431 {
17432 .cmd = NL80211_CMD_DEL_TX_TS,
17433 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17434 .doit = nl80211_del_tx_ts,
17435 .flags = GENL_UNS_ADMIN_PERM,
17436 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17437 },
17438 {
17439 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17440 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17441 .doit = nl80211_tdls_channel_switch,
17442 .flags = GENL_UNS_ADMIN_PERM,
17443 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17444 },
17445 {
17446 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17447 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17448 .doit = nl80211_tdls_cancel_channel_switch,
17449 .flags = GENL_UNS_ADMIN_PERM,
17450 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17451 },
17452 {
17453 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17454 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17455 .doit = nl80211_set_multicast_to_unicast,
17456 .flags = GENL_UNS_ADMIN_PERM,
17457 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17458 },
17459 {
17460 .cmd = NL80211_CMD_SET_PMK,
17461 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17462 .doit = nl80211_set_pmk,
17463 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17464 NL80211_FLAG_CLEAR_SKB),
17465 },
17466 {
17467 .cmd = NL80211_CMD_DEL_PMK,
17468 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17469 .doit = nl80211_del_pmk,
17470 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17471 },
17472 {
17473 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17474 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17475 .doit = nl80211_external_auth,
17476 .flags = GENL_ADMIN_PERM,
17477 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17478 },
17479 {
17480 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17481 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17482 .doit = nl80211_tx_control_port,
17483 .flags = GENL_UNS_ADMIN_PERM,
17484 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17485 },
17486 {
17487 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17488 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17489 .doit = nl80211_get_ftm_responder_stats,
17490 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17491 NL80211_FLAG_MLO_VALID_LINK_ID),
17492 },
17493 {
17494 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17495 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17496 .doit = nl80211_pmsr_start,
17497 .flags = GENL_UNS_ADMIN_PERM,
17498 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17499 },
17500 {
17501 .cmd = NL80211_CMD_NOTIFY_RADAR,
17502 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17503 .doit = nl80211_notify_radar_detection,
17504 .flags = GENL_UNS_ADMIN_PERM,
17505 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17506 },
17507 {
17508 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17509 .doit = nl80211_update_owe_info,
17510 .flags = GENL_ADMIN_PERM,
17511 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17512 },
17513 {
17514 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17515 .doit = nl80211_probe_mesh_link,
17516 .flags = GENL_UNS_ADMIN_PERM,
17517 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17518 },
17519 {
17520 .cmd = NL80211_CMD_SET_TID_CONFIG,
17521 .doit = nl80211_set_tid_config,
17522 .flags = GENL_UNS_ADMIN_PERM,
17523 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17524 NL80211_FLAG_MLO_VALID_LINK_ID),
17525 },
17526 {
17527 .cmd = NL80211_CMD_SET_SAR_SPECS,
17528 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17529 .doit = nl80211_set_sar_specs,
17530 .flags = GENL_UNS_ADMIN_PERM,
17531 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17532 NL80211_FLAG_NEED_RTNL),
17533 },
17534 {
17535 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17536 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17537 .doit = nl80211_color_change,
17538 .flags = GENL_UNS_ADMIN_PERM,
17539 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17540 },
17541 {
17542 .cmd = NL80211_CMD_SET_FILS_AAD,
17543 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17544 .doit = nl80211_set_fils_aad,
17545 .flags = GENL_UNS_ADMIN_PERM,
17546 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17547 },
17548 {
17549 .cmd = NL80211_CMD_ADD_LINK,
17550 .doit = nl80211_add_link,
17551 .flags = GENL_UNS_ADMIN_PERM,
17552 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17553 },
17554 {
17555 .cmd = NL80211_CMD_REMOVE_LINK,
17556 .doit = nl80211_remove_link,
17557 .flags = GENL_UNS_ADMIN_PERM,
17558 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17559 NL80211_FLAG_MLO_VALID_LINK_ID),
17560 },
17561 {
17562 .cmd = NL80211_CMD_ADD_LINK_STA,
17563 .doit = nl80211_add_link_station,
17564 .flags = GENL_UNS_ADMIN_PERM,
17565 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17566 NL80211_FLAG_MLO_VALID_LINK_ID),
17567 },
17568 {
17569 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17570 .doit = nl80211_modify_link_station,
17571 .flags = GENL_UNS_ADMIN_PERM,
17572 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17573 NL80211_FLAG_MLO_VALID_LINK_ID),
17574 },
17575 {
17576 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17577 .doit = nl80211_remove_link_station,
17578 .flags = GENL_UNS_ADMIN_PERM,
17579 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17580 NL80211_FLAG_MLO_VALID_LINK_ID),
17581 },
17582 {
17583 .cmd = NL80211_CMD_SET_HW_TIMESTAMP,
17584 .doit = nl80211_set_hw_timestamp,
17585 .flags = GENL_UNS_ADMIN_PERM,
17586 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17587 },
17588 };
17589
17590 static struct genl_family nl80211_fam __ro_after_init = {
17591 .name = NL80211_GENL_NAME, /* have users key off the name instead */
17592 .hdrsize = 0, /* no private header */
17593 .version = 1, /* no particular meaning now */
17594 .maxattr = NL80211_ATTR_MAX,
17595 .policy = nl80211_policy,
17596 .netnsok = true,
17597 .pre_doit = nl80211_pre_doit,
17598 .post_doit = nl80211_post_doit,
17599 .module = THIS_MODULE,
17600 .ops = nl80211_ops,
17601 .n_ops = ARRAY_SIZE(nl80211_ops),
17602 .small_ops = nl80211_small_ops,
17603 .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17604 .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17605 .mcgrps = nl80211_mcgrps,
17606 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17607 .parallel_ops = true,
17608 };
17609
17610 /* notification functions */
17611
nl80211_notify_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd)17612 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17613 enum nl80211_commands cmd)
17614 {
17615 struct sk_buff *msg;
17616 struct nl80211_dump_wiphy_state state = {};
17617
17618 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17619 cmd != NL80211_CMD_DEL_WIPHY);
17620
17621 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17622 if (!msg)
17623 return;
17624
17625 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17626 nlmsg_free(msg);
17627 return;
17628 }
17629
17630 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17631 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17632 }
17633
nl80211_notify_iface(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)17634 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17635 struct wireless_dev *wdev,
17636 enum nl80211_commands cmd)
17637 {
17638 struct sk_buff *msg;
17639
17640 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17641 if (!msg)
17642 return;
17643
17644 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17645 nlmsg_free(msg);
17646 return;
17647 }
17648
17649 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17650 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17651 }
17652
nl80211_add_scan_req(struct sk_buff * msg,struct cfg80211_registered_device * rdev)17653 static int nl80211_add_scan_req(struct sk_buff *msg,
17654 struct cfg80211_registered_device *rdev)
17655 {
17656 struct cfg80211_scan_request *req = rdev->scan_req;
17657 struct nlattr *nest;
17658 int i;
17659 struct cfg80211_scan_info *info;
17660
17661 if (WARN_ON(!req))
17662 return 0;
17663
17664 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17665 if (!nest)
17666 goto nla_put_failure;
17667 for (i = 0; i < req->n_ssids; i++) {
17668 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17669 goto nla_put_failure;
17670 }
17671 nla_nest_end(msg, nest);
17672
17673 if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17674 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17675 if (!nest)
17676 goto nla_put_failure;
17677 for (i = 0; i < req->n_channels; i++) {
17678 if (nla_put_u32(msg, i,
17679 ieee80211_channel_to_khz(req->channels[i])))
17680 goto nla_put_failure;
17681 }
17682 nla_nest_end(msg, nest);
17683 } else {
17684 nest = nla_nest_start_noflag(msg,
17685 NL80211_ATTR_SCAN_FREQUENCIES);
17686 if (!nest)
17687 goto nla_put_failure;
17688 for (i = 0; i < req->n_channels; i++) {
17689 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17690 goto nla_put_failure;
17691 }
17692 nla_nest_end(msg, nest);
17693 }
17694
17695 if (req->ie &&
17696 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17697 goto nla_put_failure;
17698
17699 if (req->flags &&
17700 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17701 goto nla_put_failure;
17702
17703 info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17704 &rdev->scan_req->info;
17705 if (info->scan_start_tsf &&
17706 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17707 info->scan_start_tsf, NL80211_BSS_PAD) ||
17708 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17709 info->tsf_bssid)))
17710 goto nla_put_failure;
17711
17712 return 0;
17713 nla_put_failure:
17714 return -ENOBUFS;
17715 }
17716
nl80211_prep_scan_msg(struct sk_buff * msg,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 portid,u32 seq,int flags,u32 cmd)17717 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17718 struct cfg80211_registered_device *rdev,
17719 struct wireless_dev *wdev,
17720 u32 portid, u32 seq, int flags,
17721 u32 cmd)
17722 {
17723 void *hdr;
17724
17725 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17726 if (!hdr)
17727 return -1;
17728
17729 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17730 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17731 wdev->netdev->ifindex)) ||
17732 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17733 NL80211_ATTR_PAD))
17734 goto nla_put_failure;
17735
17736 /* ignore errors and send incomplete event anyway */
17737 nl80211_add_scan_req(msg, rdev);
17738
17739 genlmsg_end(msg, hdr);
17740 return 0;
17741
17742 nla_put_failure:
17743 genlmsg_cancel(msg, hdr);
17744 return -EMSGSIZE;
17745 }
17746
17747 static int
nl80211_prep_sched_scan_msg(struct sk_buff * msg,struct cfg80211_sched_scan_request * req,u32 cmd)17748 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17749 struct cfg80211_sched_scan_request *req, u32 cmd)
17750 {
17751 void *hdr;
17752
17753 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17754 if (!hdr)
17755 return -1;
17756
17757 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17758 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17759 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17760 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17761 NL80211_ATTR_PAD))
17762 goto nla_put_failure;
17763
17764 genlmsg_end(msg, hdr);
17765 return 0;
17766
17767 nla_put_failure:
17768 genlmsg_cancel(msg, hdr);
17769 return -EMSGSIZE;
17770 }
17771
nl80211_send_scan_start(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev)17772 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17773 struct wireless_dev *wdev)
17774 {
17775 struct sk_buff *msg;
17776
17777 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17778 if (!msg)
17779 return;
17780
17781 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17782 NL80211_CMD_TRIGGER_SCAN) < 0) {
17783 nlmsg_free(msg);
17784 return;
17785 }
17786
17787 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17788 NL80211_MCGRP_SCAN, GFP_KERNEL);
17789 }
17790
nl80211_build_scan_msg(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,bool aborted)17791 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17792 struct wireless_dev *wdev, bool aborted)
17793 {
17794 struct sk_buff *msg;
17795
17796 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17797 if (!msg)
17798 return NULL;
17799
17800 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17801 aborted ? NL80211_CMD_SCAN_ABORTED :
17802 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17803 nlmsg_free(msg);
17804 return NULL;
17805 }
17806
17807 return msg;
17808 }
17809
17810 /* send message created by nl80211_build_scan_msg() */
nl80211_send_scan_msg(struct cfg80211_registered_device * rdev,struct sk_buff * msg)17811 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17812 struct sk_buff *msg)
17813 {
17814 if (!msg)
17815 return;
17816
17817 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17818 NL80211_MCGRP_SCAN, GFP_KERNEL);
17819 }
17820
nl80211_send_sched_scan(struct cfg80211_sched_scan_request * req,u32 cmd)17821 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17822 {
17823 struct sk_buff *msg;
17824
17825 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17826 if (!msg)
17827 return;
17828
17829 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17830 nlmsg_free(msg);
17831 return;
17832 }
17833
17834 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17835 NL80211_MCGRP_SCAN, GFP_KERNEL);
17836 }
17837
nl80211_reg_change_event_fill(struct sk_buff * msg,struct regulatory_request * request)17838 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17839 struct regulatory_request *request)
17840 {
17841 /* Userspace can always count this one always being set */
17842 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17843 goto nla_put_failure;
17844
17845 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17846 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17847 NL80211_REGDOM_TYPE_WORLD))
17848 goto nla_put_failure;
17849 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17850 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17851 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17852 goto nla_put_failure;
17853 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17854 request->intersect) {
17855 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17856 NL80211_REGDOM_TYPE_INTERSECTION))
17857 goto nla_put_failure;
17858 } else {
17859 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17860 NL80211_REGDOM_TYPE_COUNTRY) ||
17861 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17862 request->alpha2))
17863 goto nla_put_failure;
17864 }
17865
17866 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17867 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17868
17869 if (wiphy &&
17870 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17871 goto nla_put_failure;
17872
17873 if (wiphy &&
17874 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17875 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17876 goto nla_put_failure;
17877 }
17878
17879 return true;
17880
17881 nla_put_failure:
17882 return false;
17883 }
17884
17885 /*
17886 * This can happen on global regulatory changes or device specific settings
17887 * based on custom regulatory domains.
17888 */
nl80211_common_reg_change_event(enum nl80211_commands cmd_id,struct regulatory_request * request)17889 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17890 struct regulatory_request *request)
17891 {
17892 struct sk_buff *msg;
17893 void *hdr;
17894
17895 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17896 if (!msg)
17897 return;
17898
17899 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17900 if (!hdr)
17901 goto nla_put_failure;
17902
17903 if (!nl80211_reg_change_event_fill(msg, request))
17904 goto nla_put_failure;
17905
17906 genlmsg_end(msg, hdr);
17907
17908 rcu_read_lock();
17909 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17910 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17911 rcu_read_unlock();
17912
17913 return;
17914
17915 nla_put_failure:
17916 nlmsg_free(msg);
17917 }
17918
nl80211_send_mlme_event(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,enum nl80211_commands cmd,gfp_t gfp,int uapsd_queues,const u8 * req_ies,size_t req_ies_len,bool reconnect)17919 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17920 struct net_device *netdev,
17921 const u8 *buf, size_t len,
17922 enum nl80211_commands cmd, gfp_t gfp,
17923 int uapsd_queues, const u8 *req_ies,
17924 size_t req_ies_len, bool reconnect)
17925 {
17926 struct sk_buff *msg;
17927 void *hdr;
17928
17929 msg = nlmsg_new(100 + len + req_ies_len, gfp);
17930 if (!msg)
17931 return;
17932
17933 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17934 if (!hdr) {
17935 nlmsg_free(msg);
17936 return;
17937 }
17938
17939 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17940 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17941 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17942 (req_ies &&
17943 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17944 goto nla_put_failure;
17945
17946 if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17947 goto nla_put_failure;
17948
17949 if (uapsd_queues >= 0) {
17950 struct nlattr *nla_wmm =
17951 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17952 if (!nla_wmm)
17953 goto nla_put_failure;
17954
17955 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17956 uapsd_queues))
17957 goto nla_put_failure;
17958
17959 nla_nest_end(msg, nla_wmm);
17960 }
17961
17962 genlmsg_end(msg, hdr);
17963
17964 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17965 NL80211_MCGRP_MLME, gfp);
17966 return;
17967
17968 nla_put_failure:
17969 nlmsg_free(msg);
17970 }
17971
nl80211_send_rx_auth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)17972 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17973 struct net_device *netdev, const u8 *buf,
17974 size_t len, gfp_t gfp)
17975 {
17976 nl80211_send_mlme_event(rdev, netdev, buf, len,
17977 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17978 false);
17979 }
17980
nl80211_send_rx_assoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_rx_assoc_resp * data)17981 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17982 struct net_device *netdev,
17983 struct cfg80211_rx_assoc_resp *data)
17984 {
17985 nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17986 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17987 data->uapsd_queues,
17988 data->req_ies, data->req_ies_len, false);
17989 }
17990
nl80211_send_deauth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,bool reconnect,gfp_t gfp)17991 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17992 struct net_device *netdev, const u8 *buf,
17993 size_t len, bool reconnect, gfp_t gfp)
17994 {
17995 nl80211_send_mlme_event(rdev, netdev, buf, len,
17996 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17997 reconnect);
17998 }
17999
nl80211_send_disassoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,bool reconnect,gfp_t gfp)18000 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
18001 struct net_device *netdev, const u8 *buf,
18002 size_t len, bool reconnect, gfp_t gfp)
18003 {
18004 nl80211_send_mlme_event(rdev, netdev, buf, len,
18005 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
18006 reconnect);
18007 }
18008
cfg80211_rx_unprot_mlme_mgmt(struct net_device * dev,const u8 * buf,size_t len)18009 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
18010 size_t len)
18011 {
18012 struct wireless_dev *wdev = dev->ieee80211_ptr;
18013 struct wiphy *wiphy = wdev->wiphy;
18014 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18015 const struct ieee80211_mgmt *mgmt = (void *)buf;
18016 u32 cmd;
18017
18018 if (WARN_ON(len < 2))
18019 return;
18020
18021 if (ieee80211_is_deauth(mgmt->frame_control)) {
18022 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
18023 } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
18024 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
18025 } else if (ieee80211_is_beacon(mgmt->frame_control)) {
18026 if (wdev->unprot_beacon_reported &&
18027 elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
18028 return;
18029 cmd = NL80211_CMD_UNPROT_BEACON;
18030 wdev->unprot_beacon_reported = jiffies;
18031 } else {
18032 return;
18033 }
18034
18035 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
18036 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
18037 NULL, 0, false);
18038 }
18039 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
18040
nl80211_send_mlme_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,int cmd,const u8 * addr,gfp_t gfp)18041 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
18042 struct net_device *netdev, int cmd,
18043 const u8 *addr, gfp_t gfp)
18044 {
18045 struct sk_buff *msg;
18046 void *hdr;
18047
18048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18049 if (!msg)
18050 return;
18051
18052 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18053 if (!hdr) {
18054 nlmsg_free(msg);
18055 return;
18056 }
18057
18058 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18059 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18060 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18061 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18062 goto nla_put_failure;
18063
18064 genlmsg_end(msg, hdr);
18065
18066 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18067 NL80211_MCGRP_MLME, gfp);
18068 return;
18069
18070 nla_put_failure:
18071 nlmsg_free(msg);
18072 }
18073
nl80211_send_auth_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)18074 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
18075 struct net_device *netdev, const u8 *addr,
18076 gfp_t gfp)
18077 {
18078 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
18079 addr, gfp);
18080 }
18081
nl80211_send_assoc_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)18082 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
18083 struct net_device *netdev, const u8 *addr,
18084 gfp_t gfp)
18085 {
18086 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
18087 addr, gfp);
18088 }
18089
nl80211_send_connect_result(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_connect_resp_params * cr,gfp_t gfp)18090 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
18091 struct net_device *netdev,
18092 struct cfg80211_connect_resp_params *cr,
18093 gfp_t gfp)
18094 {
18095 struct sk_buff *msg;
18096 void *hdr;
18097 unsigned int link;
18098 size_t link_info_size = 0;
18099 const u8 *connected_addr = cr->valid_links ?
18100 cr->ap_mld_addr : cr->links[0].bssid;
18101
18102 if (cr->valid_links) {
18103 for_each_valid_link(cr, link) {
18104 /* Nested attribute header */
18105 link_info_size += NLA_HDRLEN;
18106 /* Link ID */
18107 link_info_size += nla_total_size(sizeof(u8));
18108 link_info_size += cr->links[link].addr ?
18109 nla_total_size(ETH_ALEN) : 0;
18110 link_info_size += (cr->links[link].bssid ||
18111 cr->links[link].bss) ?
18112 nla_total_size(ETH_ALEN) : 0;
18113 link_info_size += nla_total_size(sizeof(u16));
18114 }
18115 }
18116
18117 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
18118 cr->fils.kek_len + cr->fils.pmk_len +
18119 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
18120 gfp);
18121 if (!msg)
18122 return;
18123
18124 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
18125 if (!hdr) {
18126 nlmsg_free(msg);
18127 return;
18128 }
18129
18130 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18131 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18132 (connected_addr &&
18133 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
18134 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18135 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
18136 cr->status) ||
18137 (cr->status < 0 &&
18138 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18139 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
18140 cr->timeout_reason))) ||
18141 (cr->req_ie &&
18142 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
18143 (cr->resp_ie &&
18144 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
18145 cr->resp_ie)) ||
18146 (cr->fils.update_erp_next_seq_num &&
18147 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18148 cr->fils.erp_next_seq_num)) ||
18149 (cr->status == WLAN_STATUS_SUCCESS &&
18150 ((cr->fils.kek &&
18151 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
18152 cr->fils.kek)) ||
18153 (cr->fils.pmk &&
18154 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
18155 (cr->fils.pmkid &&
18156 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
18157 goto nla_put_failure;
18158
18159 if (cr->valid_links) {
18160 int i = 1;
18161 struct nlattr *nested;
18162
18163 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18164 if (!nested)
18165 goto nla_put_failure;
18166
18167 for_each_valid_link(cr, link) {
18168 struct nlattr *nested_mlo_links;
18169 const u8 *bssid = cr->links[link].bss ?
18170 cr->links[link].bss->bssid :
18171 cr->links[link].bssid;
18172
18173 nested_mlo_links = nla_nest_start(msg, i);
18174 if (!nested_mlo_links)
18175 goto nla_put_failure;
18176
18177 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18178 (bssid &&
18179 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18180 (cr->links[link].addr &&
18181 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18182 cr->links[link].addr)) ||
18183 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18184 cr->links[link].status))
18185 goto nla_put_failure;
18186
18187 nla_nest_end(msg, nested_mlo_links);
18188 i++;
18189 }
18190 nla_nest_end(msg, nested);
18191 }
18192
18193 genlmsg_end(msg, hdr);
18194
18195 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18196 NL80211_MCGRP_MLME, gfp);
18197 return;
18198
18199 nla_put_failure:
18200 nlmsg_free(msg);
18201 }
18202
nl80211_send_roamed(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_roam_info * info,gfp_t gfp)18203 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
18204 struct net_device *netdev,
18205 struct cfg80211_roam_info *info, gfp_t gfp)
18206 {
18207 struct sk_buff *msg;
18208 void *hdr;
18209 size_t link_info_size = 0;
18210 unsigned int link;
18211 const u8 *connected_addr = info->ap_mld_addr ?
18212 info->ap_mld_addr :
18213 (info->links[0].bss ?
18214 info->links[0].bss->bssid :
18215 info->links[0].bssid);
18216
18217 if (info->valid_links) {
18218 for_each_valid_link(info, link) {
18219 /* Nested attribute header */
18220 link_info_size += NLA_HDRLEN;
18221 /* Link ID */
18222 link_info_size += nla_total_size(sizeof(u8));
18223 link_info_size += info->links[link].addr ?
18224 nla_total_size(ETH_ALEN) : 0;
18225 link_info_size += (info->links[link].bssid ||
18226 info->links[link].bss) ?
18227 nla_total_size(ETH_ALEN) : 0;
18228 }
18229 }
18230
18231 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
18232 info->fils.kek_len + info->fils.pmk_len +
18233 (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
18234 link_info_size, gfp);
18235 if (!msg)
18236 return;
18237
18238 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
18239 if (!hdr) {
18240 nlmsg_free(msg);
18241 return;
18242 }
18243
18244 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18245 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18246 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
18247 (info->req_ie &&
18248 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
18249 info->req_ie)) ||
18250 (info->resp_ie &&
18251 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
18252 info->resp_ie)) ||
18253 (info->fils.update_erp_next_seq_num &&
18254 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18255 info->fils.erp_next_seq_num)) ||
18256 (info->fils.kek &&
18257 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
18258 info->fils.kek)) ||
18259 (info->fils.pmk &&
18260 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
18261 (info->fils.pmkid &&
18262 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
18263 goto nla_put_failure;
18264
18265 if (info->valid_links) {
18266 int i = 1;
18267 struct nlattr *nested;
18268
18269 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18270 if (!nested)
18271 goto nla_put_failure;
18272
18273 for_each_valid_link(info, link) {
18274 struct nlattr *nested_mlo_links;
18275 const u8 *bssid = info->links[link].bss ?
18276 info->links[link].bss->bssid :
18277 info->links[link].bssid;
18278
18279 nested_mlo_links = nla_nest_start(msg, i);
18280 if (!nested_mlo_links)
18281 goto nla_put_failure;
18282
18283 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18284 (bssid &&
18285 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18286 (info->links[link].addr &&
18287 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18288 info->links[link].addr)))
18289 goto nla_put_failure;
18290
18291 nla_nest_end(msg, nested_mlo_links);
18292 i++;
18293 }
18294 nla_nest_end(msg, nested);
18295 }
18296
18297 genlmsg_end(msg, hdr);
18298
18299 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18300 NL80211_MCGRP_MLME, gfp);
18301 return;
18302
18303 nla_put_failure:
18304 nlmsg_free(msg);
18305 }
18306
nl80211_send_port_authorized(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,const u8 * td_bitmap,u8 td_bitmap_len)18307 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
18308 struct net_device *netdev, const u8 *bssid,
18309 const u8 *td_bitmap, u8 td_bitmap_len)
18310 {
18311 struct sk_buff *msg;
18312 void *hdr;
18313
18314 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18315 if (!msg)
18316 return;
18317
18318 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
18319 if (!hdr) {
18320 nlmsg_free(msg);
18321 return;
18322 }
18323
18324 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18325 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18326 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18327 goto nla_put_failure;
18328
18329 if ((td_bitmap_len > 0) && td_bitmap)
18330 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
18331 td_bitmap_len, td_bitmap))
18332 goto nla_put_failure;
18333
18334 genlmsg_end(msg, hdr);
18335
18336 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18337 NL80211_MCGRP_MLME, GFP_KERNEL);
18338 return;
18339
18340 nla_put_failure:
18341 nlmsg_free(msg);
18342 }
18343
nl80211_send_disconnected(struct cfg80211_registered_device * rdev,struct net_device * netdev,u16 reason,const u8 * ie,size_t ie_len,bool from_ap)18344 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
18345 struct net_device *netdev, u16 reason,
18346 const u8 *ie, size_t ie_len, bool from_ap)
18347 {
18348 struct sk_buff *msg;
18349 void *hdr;
18350
18351 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
18352 if (!msg)
18353 return;
18354
18355 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18356 if (!hdr) {
18357 nlmsg_free(msg);
18358 return;
18359 }
18360
18361 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18362 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18363 (reason &&
18364 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18365 (from_ap &&
18366 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18367 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18368 goto nla_put_failure;
18369
18370 genlmsg_end(msg, hdr);
18371
18372 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18373 NL80211_MCGRP_MLME, GFP_KERNEL);
18374 return;
18375
18376 nla_put_failure:
18377 nlmsg_free(msg);
18378 }
18379
cfg80211_links_removed(struct net_device * dev,u16 link_mask)18380 void cfg80211_links_removed(struct net_device *dev, u16 link_mask)
18381 {
18382 struct wireless_dev *wdev = dev->ieee80211_ptr;
18383 struct wiphy *wiphy = wdev->wiphy;
18384 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18385 struct sk_buff *msg;
18386 struct nlattr *links;
18387 void *hdr;
18388
18389 ASSERT_WDEV_LOCK(wdev);
18390 trace_cfg80211_links_removed(dev, link_mask);
18391
18392 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
18393 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
18394 return;
18395
18396 if (WARN_ON(!wdev->valid_links || !link_mask ||
18397 (wdev->valid_links & link_mask) != link_mask ||
18398 wdev->valid_links == link_mask))
18399 return;
18400
18401 cfg80211_wdev_release_link_bsses(wdev, link_mask);
18402 wdev->valid_links &= ~link_mask;
18403
18404 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18405 if (!msg)
18406 return;
18407
18408 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED);
18409 if (!hdr) {
18410 nlmsg_free(msg);
18411 return;
18412 }
18413
18414 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18415 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18416 goto nla_put_failure;
18417
18418 links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18419 if (!links)
18420 goto nla_put_failure;
18421
18422 while (link_mask) {
18423 struct nlattr *link;
18424 int link_id = __ffs(link_mask);
18425
18426 link = nla_nest_start(msg, link_id + 1);
18427 if (!link)
18428 goto nla_put_failure;
18429
18430 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18431 goto nla_put_failure;
18432
18433 nla_nest_end(msg, link);
18434 link_mask &= ~(1 << link_id);
18435 }
18436
18437 nla_nest_end(msg, links);
18438
18439 genlmsg_end(msg, hdr);
18440
18441 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18442 NL80211_MCGRP_MLME, GFP_KERNEL);
18443 return;
18444
18445 nla_put_failure:
18446 nlmsg_free(msg);
18447 }
18448 EXPORT_SYMBOL(cfg80211_links_removed);
18449
nl80211_send_ibss_bssid(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,gfp_t gfp)18450 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18451 struct net_device *netdev, const u8 *bssid,
18452 gfp_t gfp)
18453 {
18454 struct sk_buff *msg;
18455 void *hdr;
18456
18457 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18458 if (!msg)
18459 return;
18460
18461 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18462 if (!hdr) {
18463 nlmsg_free(msg);
18464 return;
18465 }
18466
18467 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18468 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18469 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18470 goto nla_put_failure;
18471
18472 genlmsg_end(msg, hdr);
18473
18474 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18475 NL80211_MCGRP_MLME, gfp);
18476 return;
18477
18478 nla_put_failure:
18479 nlmsg_free(msg);
18480 }
18481
cfg80211_notify_new_peer_candidate(struct net_device * dev,const u8 * addr,const u8 * ie,u8 ie_len,int sig_dbm,gfp_t gfp)18482 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18483 const u8 *ie, u8 ie_len,
18484 int sig_dbm, gfp_t gfp)
18485 {
18486 struct wireless_dev *wdev = dev->ieee80211_ptr;
18487 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18488 struct sk_buff *msg;
18489 void *hdr;
18490
18491 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18492 return;
18493
18494 trace_cfg80211_notify_new_peer_candidate(dev, addr);
18495
18496 msg = nlmsg_new(100 + ie_len, gfp);
18497 if (!msg)
18498 return;
18499
18500 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18501 if (!hdr) {
18502 nlmsg_free(msg);
18503 return;
18504 }
18505
18506 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18507 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18508 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18509 (ie_len && ie &&
18510 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18511 (sig_dbm &&
18512 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18513 goto nla_put_failure;
18514
18515 genlmsg_end(msg, hdr);
18516
18517 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18518 NL80211_MCGRP_MLME, gfp);
18519 return;
18520
18521 nla_put_failure:
18522 nlmsg_free(msg);
18523 }
18524 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18525
nl80211_michael_mic_failure(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,enum nl80211_key_type key_type,int key_id,const u8 * tsc,gfp_t gfp)18526 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18527 struct net_device *netdev, const u8 *addr,
18528 enum nl80211_key_type key_type, int key_id,
18529 const u8 *tsc, gfp_t gfp)
18530 {
18531 struct sk_buff *msg;
18532 void *hdr;
18533
18534 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18535 if (!msg)
18536 return;
18537
18538 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18539 if (!hdr) {
18540 nlmsg_free(msg);
18541 return;
18542 }
18543
18544 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18545 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18546 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18547 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18548 (key_id != -1 &&
18549 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18550 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18551 goto nla_put_failure;
18552
18553 genlmsg_end(msg, hdr);
18554
18555 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18556 NL80211_MCGRP_MLME, gfp);
18557 return;
18558
18559 nla_put_failure:
18560 nlmsg_free(msg);
18561 }
18562
nl80211_send_beacon_hint_event(struct wiphy * wiphy,struct ieee80211_channel * channel_before,struct ieee80211_channel * channel_after)18563 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18564 struct ieee80211_channel *channel_before,
18565 struct ieee80211_channel *channel_after)
18566 {
18567 struct sk_buff *msg;
18568 void *hdr;
18569 struct nlattr *nl_freq;
18570
18571 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18572 if (!msg)
18573 return;
18574
18575 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18576 if (!hdr) {
18577 nlmsg_free(msg);
18578 return;
18579 }
18580
18581 /*
18582 * Since we are applying the beacon hint to a wiphy we know its
18583 * wiphy_idx is valid
18584 */
18585 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18586 goto nla_put_failure;
18587
18588 /* Before */
18589 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18590 if (!nl_freq)
18591 goto nla_put_failure;
18592
18593 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18594 goto nla_put_failure;
18595 nla_nest_end(msg, nl_freq);
18596
18597 /* After */
18598 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18599 if (!nl_freq)
18600 goto nla_put_failure;
18601
18602 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18603 goto nla_put_failure;
18604 nla_nest_end(msg, nl_freq);
18605
18606 genlmsg_end(msg, hdr);
18607
18608 rcu_read_lock();
18609 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18610 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18611 rcu_read_unlock();
18612
18613 return;
18614
18615 nla_put_failure:
18616 nlmsg_free(msg);
18617 }
18618
nl80211_send_remain_on_chan_event(int cmd,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)18619 static void nl80211_send_remain_on_chan_event(
18620 int cmd, struct cfg80211_registered_device *rdev,
18621 struct wireless_dev *wdev, u64 cookie,
18622 struct ieee80211_channel *chan,
18623 unsigned int duration, gfp_t gfp)
18624 {
18625 struct sk_buff *msg;
18626 void *hdr;
18627
18628 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18629 if (!msg)
18630 return;
18631
18632 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18633 if (!hdr) {
18634 nlmsg_free(msg);
18635 return;
18636 }
18637
18638 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18639 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18640 wdev->netdev->ifindex)) ||
18641 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18642 NL80211_ATTR_PAD) ||
18643 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18644 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18645 NL80211_CHAN_NO_HT) ||
18646 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18647 NL80211_ATTR_PAD))
18648 goto nla_put_failure;
18649
18650 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18651 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18652 goto nla_put_failure;
18653
18654 genlmsg_end(msg, hdr);
18655
18656 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18657 NL80211_MCGRP_MLME, gfp);
18658 return;
18659
18660 nla_put_failure:
18661 nlmsg_free(msg);
18662 }
18663
cfg80211_assoc_comeback(struct net_device * netdev,const u8 * ap_addr,u32 timeout)18664 void cfg80211_assoc_comeback(struct net_device *netdev,
18665 const u8 *ap_addr, u32 timeout)
18666 {
18667 struct wireless_dev *wdev = netdev->ieee80211_ptr;
18668 struct wiphy *wiphy = wdev->wiphy;
18669 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18670 struct sk_buff *msg;
18671 void *hdr;
18672
18673 trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18674
18675 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18676 if (!msg)
18677 return;
18678
18679 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18680 if (!hdr) {
18681 nlmsg_free(msg);
18682 return;
18683 }
18684
18685 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18686 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18687 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18688 nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18689 goto nla_put_failure;
18690
18691 genlmsg_end(msg, hdr);
18692
18693 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18694 NL80211_MCGRP_MLME, GFP_KERNEL);
18695 return;
18696
18697 nla_put_failure:
18698 nlmsg_free(msg);
18699 }
18700 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18701
cfg80211_ready_on_channel(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)18702 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18703 struct ieee80211_channel *chan,
18704 unsigned int duration, gfp_t gfp)
18705 {
18706 struct wiphy *wiphy = wdev->wiphy;
18707 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18708
18709 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18710 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18711 rdev, wdev, cookie, chan,
18712 duration, gfp);
18713 }
18714 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18715
cfg80211_remain_on_channel_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)18716 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18717 struct ieee80211_channel *chan,
18718 gfp_t gfp)
18719 {
18720 struct wiphy *wiphy = wdev->wiphy;
18721 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18722
18723 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18724 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18725 rdev, wdev, cookie, chan, 0, gfp);
18726 }
18727 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18728
cfg80211_tx_mgmt_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)18729 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18730 struct ieee80211_channel *chan,
18731 gfp_t gfp)
18732 {
18733 struct wiphy *wiphy = wdev->wiphy;
18734 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18735
18736 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18737 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18738 rdev, wdev, cookie, chan, 0, gfp);
18739 }
18740 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18741
cfg80211_new_sta(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)18742 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18743 struct station_info *sinfo, gfp_t gfp)
18744 {
18745 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18746 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18747 struct sk_buff *msg;
18748
18749 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18750
18751 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18752 if (!msg)
18753 return;
18754
18755 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18756 rdev, dev, mac_addr, sinfo) < 0) {
18757 nlmsg_free(msg);
18758 return;
18759 }
18760
18761 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18762 NL80211_MCGRP_MLME, gfp);
18763 }
18764 EXPORT_SYMBOL(cfg80211_new_sta);
18765
cfg80211_del_sta_sinfo(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)18766 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18767 struct station_info *sinfo, gfp_t gfp)
18768 {
18769 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18770 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18771 struct sk_buff *msg;
18772 struct station_info empty_sinfo = {};
18773
18774 if (!sinfo)
18775 sinfo = &empty_sinfo;
18776
18777 trace_cfg80211_del_sta(dev, mac_addr);
18778
18779 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18780 if (!msg) {
18781 cfg80211_sinfo_release_content(sinfo);
18782 return;
18783 }
18784
18785 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18786 rdev, dev, mac_addr, sinfo) < 0) {
18787 nlmsg_free(msg);
18788 return;
18789 }
18790
18791 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18792 NL80211_MCGRP_MLME, gfp);
18793 }
18794 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18795
cfg80211_conn_failed(struct net_device * dev,const u8 * mac_addr,enum nl80211_connect_failed_reason reason,gfp_t gfp)18796 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18797 enum nl80211_connect_failed_reason reason,
18798 gfp_t gfp)
18799 {
18800 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18801 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18802 struct sk_buff *msg;
18803 void *hdr;
18804
18805 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18806 if (!msg)
18807 return;
18808
18809 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18810 if (!hdr) {
18811 nlmsg_free(msg);
18812 return;
18813 }
18814
18815 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18816 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18817 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18818 goto nla_put_failure;
18819
18820 genlmsg_end(msg, hdr);
18821
18822 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18823 NL80211_MCGRP_MLME, gfp);
18824 return;
18825
18826 nla_put_failure:
18827 nlmsg_free(msg);
18828 }
18829 EXPORT_SYMBOL(cfg80211_conn_failed);
18830
__nl80211_unexpected_frame(struct net_device * dev,u8 cmd,const u8 * addr,gfp_t gfp)18831 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18832 const u8 *addr, gfp_t gfp)
18833 {
18834 struct wireless_dev *wdev = dev->ieee80211_ptr;
18835 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18836 struct sk_buff *msg;
18837 void *hdr;
18838 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18839
18840 if (!nlportid)
18841 return false;
18842
18843 msg = nlmsg_new(100, gfp);
18844 if (!msg)
18845 return true;
18846
18847 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18848 if (!hdr) {
18849 nlmsg_free(msg);
18850 return true;
18851 }
18852
18853 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18854 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18855 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18856 goto nla_put_failure;
18857
18858 genlmsg_end(msg, hdr);
18859 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18860 return true;
18861
18862 nla_put_failure:
18863 nlmsg_free(msg);
18864 return true;
18865 }
18866
cfg80211_rx_spurious_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)18867 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18868 const u8 *addr, gfp_t gfp)
18869 {
18870 struct wireless_dev *wdev = dev->ieee80211_ptr;
18871 bool ret;
18872
18873 trace_cfg80211_rx_spurious_frame(dev, addr);
18874
18875 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18876 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18877 trace_cfg80211_return_bool(false);
18878 return false;
18879 }
18880 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18881 addr, gfp);
18882 trace_cfg80211_return_bool(ret);
18883 return ret;
18884 }
18885 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18886
cfg80211_rx_unexpected_4addr_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)18887 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18888 const u8 *addr, gfp_t gfp)
18889 {
18890 struct wireless_dev *wdev = dev->ieee80211_ptr;
18891 bool ret;
18892
18893 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18894
18895 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18896 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18897 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18898 trace_cfg80211_return_bool(false);
18899 return false;
18900 }
18901 ret = __nl80211_unexpected_frame(dev,
18902 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18903 addr, gfp);
18904 trace_cfg80211_return_bool(ret);
18905 return ret;
18906 }
18907 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18908
nl80211_send_mgmt(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 nlportid,struct cfg80211_rx_info * info,gfp_t gfp)18909 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18910 struct wireless_dev *wdev, u32 nlportid,
18911 struct cfg80211_rx_info *info, gfp_t gfp)
18912 {
18913 struct net_device *netdev = wdev->netdev;
18914 struct sk_buff *msg;
18915 void *hdr;
18916
18917 msg = nlmsg_new(100 + info->len, gfp);
18918 if (!msg)
18919 return -ENOMEM;
18920
18921 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18922 if (!hdr) {
18923 nlmsg_free(msg);
18924 return -ENOMEM;
18925 }
18926
18927 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18928 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18929 netdev->ifindex)) ||
18930 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18931 NL80211_ATTR_PAD) ||
18932 (info->have_link_id &&
18933 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18934 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18935 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18936 (info->sig_dbm &&
18937 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18938 nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18939 (info->flags &&
18940 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18941 (info->rx_tstamp && nla_put_u64_64bit(msg,
18942 NL80211_ATTR_RX_HW_TIMESTAMP,
18943 info->rx_tstamp,
18944 NL80211_ATTR_PAD)) ||
18945 (info->ack_tstamp && nla_put_u64_64bit(msg,
18946 NL80211_ATTR_TX_HW_TIMESTAMP,
18947 info->ack_tstamp,
18948 NL80211_ATTR_PAD)))
18949 goto nla_put_failure;
18950
18951 genlmsg_end(msg, hdr);
18952
18953 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18954
18955 nla_put_failure:
18956 nlmsg_free(msg);
18957 return -ENOBUFS;
18958 }
18959
nl80211_frame_tx_status(struct wireless_dev * wdev,struct cfg80211_tx_status * status,gfp_t gfp,enum nl80211_commands command)18960 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18961 struct cfg80211_tx_status *status,
18962 gfp_t gfp, enum nl80211_commands command)
18963 {
18964 struct wiphy *wiphy = wdev->wiphy;
18965 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18966 struct net_device *netdev = wdev->netdev;
18967 struct sk_buff *msg;
18968 void *hdr;
18969
18970 if (command == NL80211_CMD_FRAME_TX_STATUS)
18971 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18972 status->ack);
18973 else
18974 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18975 status->ack);
18976
18977 msg = nlmsg_new(100 + status->len, gfp);
18978 if (!msg)
18979 return;
18980
18981 hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18982 if (!hdr) {
18983 nlmsg_free(msg);
18984 return;
18985 }
18986
18987 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18988 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18989 netdev->ifindex)) ||
18990 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18991 NL80211_ATTR_PAD) ||
18992 nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18993 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18994 NL80211_ATTR_PAD) ||
18995 (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18996 (status->tx_tstamp &&
18997 nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18998 status->tx_tstamp, NL80211_ATTR_PAD)) ||
18999 (status->ack_tstamp &&
19000 nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
19001 status->ack_tstamp, NL80211_ATTR_PAD)))
19002 goto nla_put_failure;
19003
19004 genlmsg_end(msg, hdr);
19005
19006 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19007 NL80211_MCGRP_MLME, gfp);
19008 return;
19009
19010 nla_put_failure:
19011 nlmsg_free(msg);
19012 }
19013
cfg80211_control_port_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)19014 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
19015 const u8 *buf, size_t len, bool ack,
19016 gfp_t gfp)
19017 {
19018 struct cfg80211_tx_status status = {
19019 .cookie = cookie,
19020 .buf = buf,
19021 .len = len,
19022 .ack = ack
19023 };
19024
19025 nl80211_frame_tx_status(wdev, &status, gfp,
19026 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
19027 }
19028 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
19029
cfg80211_mgmt_tx_status_ext(struct wireless_dev * wdev,struct cfg80211_tx_status * status,gfp_t gfp)19030 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
19031 struct cfg80211_tx_status *status, gfp_t gfp)
19032 {
19033 nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
19034 }
19035 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
19036
__nl80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted,int link_id,gfp_t gfp)19037 static int __nl80211_rx_control_port(struct net_device *dev,
19038 struct sk_buff *skb,
19039 bool unencrypted,
19040 int link_id,
19041 gfp_t gfp)
19042 {
19043 struct wireless_dev *wdev = dev->ieee80211_ptr;
19044 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19045 struct ethhdr *ehdr = eth_hdr(skb);
19046 const u8 *addr = ehdr->h_source;
19047 u16 proto = be16_to_cpu(skb->protocol);
19048 struct sk_buff *msg;
19049 void *hdr;
19050 struct nlattr *frame;
19051
19052 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
19053
19054 if (!nlportid)
19055 return -ENOENT;
19056
19057 msg = nlmsg_new(100 + skb->len, gfp);
19058 if (!msg)
19059 return -ENOMEM;
19060
19061 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
19062 if (!hdr) {
19063 nlmsg_free(msg);
19064 return -ENOBUFS;
19065 }
19066
19067 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19068 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19069 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19070 NL80211_ATTR_PAD) ||
19071 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19072 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
19073 (link_id >= 0 &&
19074 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) ||
19075 (unencrypted && nla_put_flag(msg,
19076 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
19077 goto nla_put_failure;
19078
19079 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
19080 if (!frame)
19081 goto nla_put_failure;
19082
19083 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
19084 genlmsg_end(msg, hdr);
19085
19086 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19087
19088 nla_put_failure:
19089 nlmsg_free(msg);
19090 return -ENOBUFS;
19091 }
19092
cfg80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted,int link_id)19093 bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb,
19094 bool unencrypted, int link_id)
19095 {
19096 int ret;
19097
19098 trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id);
19099 ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id,
19100 GFP_ATOMIC);
19101 trace_cfg80211_return_bool(ret == 0);
19102 return ret == 0;
19103 }
19104 EXPORT_SYMBOL(cfg80211_rx_control_port);
19105
cfg80211_prepare_cqm(struct net_device * dev,const char * mac,gfp_t gfp)19106 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
19107 const char *mac, gfp_t gfp)
19108 {
19109 struct wireless_dev *wdev = dev->ieee80211_ptr;
19110 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19111 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19112 void **cb;
19113
19114 if (!msg)
19115 return NULL;
19116
19117 cb = (void **)msg->cb;
19118
19119 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
19120 if (!cb[0]) {
19121 nlmsg_free(msg);
19122 return NULL;
19123 }
19124
19125 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19126 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19127 goto nla_put_failure;
19128
19129 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19130 goto nla_put_failure;
19131
19132 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
19133 if (!cb[1])
19134 goto nla_put_failure;
19135
19136 cb[2] = rdev;
19137
19138 return msg;
19139 nla_put_failure:
19140 nlmsg_free(msg);
19141 return NULL;
19142 }
19143
cfg80211_send_cqm(struct sk_buff * msg,gfp_t gfp)19144 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
19145 {
19146 void **cb = (void **)msg->cb;
19147 struct cfg80211_registered_device *rdev = cb[2];
19148
19149 nla_nest_end(msg, cb[1]);
19150 genlmsg_end(msg, cb[0]);
19151
19152 memset(msg->cb, 0, sizeof(msg->cb));
19153
19154 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19155 NL80211_MCGRP_MLME, gfp);
19156 }
19157
cfg80211_cqm_rssi_notify(struct net_device * dev,enum nl80211_cqm_rssi_threshold_event rssi_event,s32 rssi_level,gfp_t gfp)19158 void cfg80211_cqm_rssi_notify(struct net_device *dev,
19159 enum nl80211_cqm_rssi_threshold_event rssi_event,
19160 s32 rssi_level, gfp_t gfp)
19161 {
19162 struct wireless_dev *wdev = dev->ieee80211_ptr;
19163 struct cfg80211_cqm_config *cqm_config;
19164
19165 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
19166
19167 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
19168 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
19169 return;
19170
19171 rcu_read_lock();
19172 cqm_config = rcu_dereference(wdev->cqm_config);
19173 if (cqm_config) {
19174 cqm_config->last_rssi_event_value = rssi_level;
19175 cqm_config->last_rssi_event_type = rssi_event;
19176 wiphy_work_queue(wdev->wiphy, &wdev->cqm_rssi_work);
19177 }
19178 rcu_read_unlock();
19179 }
19180 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
19181
cfg80211_cqm_rssi_notify_work(struct wiphy * wiphy,struct wiphy_work * work)19182 void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work)
19183 {
19184 struct wireless_dev *wdev = container_of(work, struct wireless_dev,
19185 cqm_rssi_work);
19186 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19187 enum nl80211_cqm_rssi_threshold_event rssi_event;
19188 struct cfg80211_cqm_config *cqm_config;
19189 struct sk_buff *msg;
19190 s32 rssi_level;
19191
19192 wdev_lock(wdev);
19193 cqm_config = rcu_dereference_protected(wdev->cqm_config,
19194 lockdep_is_held(&wdev->mtx));
19195 if (!cqm_config)
19196 goto unlock;
19197
19198 if (cqm_config->use_range_api)
19199 cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config);
19200
19201 rssi_level = cqm_config->last_rssi_event_value;
19202 rssi_event = cqm_config->last_rssi_event_type;
19203
19204 msg = cfg80211_prepare_cqm(wdev->netdev, NULL, GFP_KERNEL);
19205 if (!msg)
19206 goto unlock;
19207
19208 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
19209 rssi_event))
19210 goto nla_put_failure;
19211
19212 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
19213 rssi_level))
19214 goto nla_put_failure;
19215
19216 cfg80211_send_cqm(msg, GFP_KERNEL);
19217
19218 goto unlock;
19219
19220 nla_put_failure:
19221 nlmsg_free(msg);
19222 unlock:
19223 wdev_unlock(wdev);
19224 }
19225
cfg80211_cqm_txe_notify(struct net_device * dev,const u8 * peer,u32 num_packets,u32 rate,u32 intvl,gfp_t gfp)19226 void cfg80211_cqm_txe_notify(struct net_device *dev,
19227 const u8 *peer, u32 num_packets,
19228 u32 rate, u32 intvl, gfp_t gfp)
19229 {
19230 struct sk_buff *msg;
19231
19232 msg = cfg80211_prepare_cqm(dev, peer, gfp);
19233 if (!msg)
19234 return;
19235
19236 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
19237 goto nla_put_failure;
19238
19239 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
19240 goto nla_put_failure;
19241
19242 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
19243 goto nla_put_failure;
19244
19245 cfg80211_send_cqm(msg, gfp);
19246 return;
19247
19248 nla_put_failure:
19249 nlmsg_free(msg);
19250 }
19251 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
19252
cfg80211_cqm_pktloss_notify(struct net_device * dev,const u8 * peer,u32 num_packets,gfp_t gfp)19253 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
19254 const u8 *peer, u32 num_packets, gfp_t gfp)
19255 {
19256 struct sk_buff *msg;
19257
19258 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
19259
19260 msg = cfg80211_prepare_cqm(dev, peer, gfp);
19261 if (!msg)
19262 return;
19263
19264 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
19265 goto nla_put_failure;
19266
19267 cfg80211_send_cqm(msg, gfp);
19268 return;
19269
19270 nla_put_failure:
19271 nlmsg_free(msg);
19272 }
19273 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
19274
cfg80211_cqm_beacon_loss_notify(struct net_device * dev,gfp_t gfp)19275 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
19276 {
19277 struct sk_buff *msg;
19278
19279 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19280 if (!msg)
19281 return;
19282
19283 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
19284 goto nla_put_failure;
19285
19286 cfg80211_send_cqm(msg, gfp);
19287 return;
19288
19289 nla_put_failure:
19290 nlmsg_free(msg);
19291 }
19292 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
19293
nl80211_gtk_rekey_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)19294 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
19295 struct net_device *netdev, const u8 *bssid,
19296 const u8 *replay_ctr, gfp_t gfp)
19297 {
19298 struct sk_buff *msg;
19299 struct nlattr *rekey_attr;
19300 void *hdr;
19301
19302 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19303 if (!msg)
19304 return;
19305
19306 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
19307 if (!hdr) {
19308 nlmsg_free(msg);
19309 return;
19310 }
19311
19312 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19313 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19314 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
19315 goto nla_put_failure;
19316
19317 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
19318 if (!rekey_attr)
19319 goto nla_put_failure;
19320
19321 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
19322 NL80211_REPLAY_CTR_LEN, replay_ctr))
19323 goto nla_put_failure;
19324
19325 nla_nest_end(msg, rekey_attr);
19326
19327 genlmsg_end(msg, hdr);
19328
19329 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19330 NL80211_MCGRP_MLME, gfp);
19331 return;
19332
19333 nla_put_failure:
19334 nlmsg_free(msg);
19335 }
19336
cfg80211_gtk_rekey_notify(struct net_device * dev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)19337 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
19338 const u8 *replay_ctr, gfp_t gfp)
19339 {
19340 struct wireless_dev *wdev = dev->ieee80211_ptr;
19341 struct wiphy *wiphy = wdev->wiphy;
19342 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19343
19344 trace_cfg80211_gtk_rekey_notify(dev, bssid);
19345 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
19346 }
19347 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
19348
19349 static void
nl80211_pmksa_candidate_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,int index,const u8 * bssid,bool preauth,gfp_t gfp)19350 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
19351 struct net_device *netdev, int index,
19352 const u8 *bssid, bool preauth, gfp_t gfp)
19353 {
19354 struct sk_buff *msg;
19355 struct nlattr *attr;
19356 void *hdr;
19357
19358 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19359 if (!msg)
19360 return;
19361
19362 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
19363 if (!hdr) {
19364 nlmsg_free(msg);
19365 return;
19366 }
19367
19368 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19369 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19370 goto nla_put_failure;
19371
19372 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
19373 if (!attr)
19374 goto nla_put_failure;
19375
19376 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
19377 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
19378 (preauth &&
19379 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
19380 goto nla_put_failure;
19381
19382 nla_nest_end(msg, attr);
19383
19384 genlmsg_end(msg, hdr);
19385
19386 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19387 NL80211_MCGRP_MLME, gfp);
19388 return;
19389
19390 nla_put_failure:
19391 nlmsg_free(msg);
19392 }
19393
cfg80211_pmksa_candidate_notify(struct net_device * dev,int index,const u8 * bssid,bool preauth,gfp_t gfp)19394 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
19395 const u8 *bssid, bool preauth, gfp_t gfp)
19396 {
19397 struct wireless_dev *wdev = dev->ieee80211_ptr;
19398 struct wiphy *wiphy = wdev->wiphy;
19399 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19400
19401 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
19402 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
19403 }
19404 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
19405
nl80211_ch_switch_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,unsigned int link_id,struct cfg80211_chan_def * chandef,gfp_t gfp,enum nl80211_commands notif,u8 count,bool quiet,u16 punct_bitmap)19406 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
19407 struct net_device *netdev,
19408 unsigned int link_id,
19409 struct cfg80211_chan_def *chandef,
19410 gfp_t gfp,
19411 enum nl80211_commands notif,
19412 u8 count, bool quiet, u16 punct_bitmap)
19413 {
19414 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19415 struct sk_buff *msg;
19416 void *hdr;
19417
19418 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19419 if (!msg)
19420 return;
19421
19422 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
19423 if (!hdr) {
19424 nlmsg_free(msg);
19425 return;
19426 }
19427
19428 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19429 goto nla_put_failure;
19430
19431 if (wdev->valid_links &&
19432 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
19433 goto nla_put_failure;
19434
19435 if (nl80211_send_chandef(msg, chandef))
19436 goto nla_put_failure;
19437
19438 if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
19439 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
19440 goto nla_put_failure;
19441 if (quiet &&
19442 nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
19443 goto nla_put_failure;
19444 }
19445
19446 if (nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, punct_bitmap))
19447 goto nla_put_failure;
19448
19449 genlmsg_end(msg, hdr);
19450
19451 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19452 NL80211_MCGRP_MLME, gfp);
19453 return;
19454
19455 nla_put_failure:
19456 nlmsg_free(msg);
19457 }
19458
cfg80211_ch_switch_notify(struct net_device * dev,struct cfg80211_chan_def * chandef,unsigned int link_id,u16 punct_bitmap)19459 void cfg80211_ch_switch_notify(struct net_device *dev,
19460 struct cfg80211_chan_def *chandef,
19461 unsigned int link_id, u16 punct_bitmap)
19462 {
19463 struct wireless_dev *wdev = dev->ieee80211_ptr;
19464 struct wiphy *wiphy = wdev->wiphy;
19465 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19466
19467 ASSERT_WDEV_LOCK(wdev);
19468 WARN_INVALID_LINK_ID(wdev, link_id);
19469
19470 trace_cfg80211_ch_switch_notify(dev, chandef, link_id, punct_bitmap);
19471
19472 switch (wdev->iftype) {
19473 case NL80211_IFTYPE_STATION:
19474 case NL80211_IFTYPE_P2P_CLIENT:
19475 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19476 cfg80211_update_assoc_bss_entry(wdev, link_id,
19477 chandef->chan);
19478 break;
19479 case NL80211_IFTYPE_MESH_POINT:
19480 wdev->u.mesh.chandef = *chandef;
19481 wdev->u.mesh.preset_chandef = *chandef;
19482 break;
19483 case NL80211_IFTYPE_AP:
19484 case NL80211_IFTYPE_P2P_GO:
19485 wdev->links[link_id].ap.chandef = *chandef;
19486 break;
19487 case NL80211_IFTYPE_ADHOC:
19488 wdev->u.ibss.chandef = *chandef;
19489 break;
19490 default:
19491 WARN_ON(1);
19492 break;
19493 }
19494
19495 cfg80211_sched_dfs_chan_update(rdev);
19496
19497 nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19498 NL80211_CMD_CH_SWITCH_NOTIFY, 0, false,
19499 punct_bitmap);
19500 }
19501 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19502
cfg80211_ch_switch_started_notify(struct net_device * dev,struct cfg80211_chan_def * chandef,unsigned int link_id,u8 count,bool quiet,u16 punct_bitmap)19503 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19504 struct cfg80211_chan_def *chandef,
19505 unsigned int link_id, u8 count,
19506 bool quiet, u16 punct_bitmap)
19507 {
19508 struct wireless_dev *wdev = dev->ieee80211_ptr;
19509 struct wiphy *wiphy = wdev->wiphy;
19510 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19511
19512 ASSERT_WDEV_LOCK(wdev);
19513 WARN_INVALID_LINK_ID(wdev, link_id);
19514
19515 trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id,
19516 punct_bitmap);
19517
19518
19519 nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19520 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19521 count, quiet, punct_bitmap);
19522 }
19523 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19524
cfg80211_bss_color_notify(struct net_device * dev,enum nl80211_commands cmd,u8 count,u64 color_bitmap)19525 int cfg80211_bss_color_notify(struct net_device *dev,
19526 enum nl80211_commands cmd, u8 count,
19527 u64 color_bitmap)
19528 {
19529 struct wireless_dev *wdev = dev->ieee80211_ptr;
19530 struct wiphy *wiphy = wdev->wiphy;
19531 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19532 struct sk_buff *msg;
19533 void *hdr;
19534
19535 ASSERT_WDEV_LOCK(wdev);
19536
19537 trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19538
19539 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19540 if (!msg)
19541 return -ENOMEM;
19542
19543 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19544 if (!hdr)
19545 goto nla_put_failure;
19546
19547 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19548 goto nla_put_failure;
19549
19550 if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19551 nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19552 goto nla_put_failure;
19553
19554 if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19555 nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19556 color_bitmap, NL80211_ATTR_PAD))
19557 goto nla_put_failure;
19558
19559 genlmsg_end(msg, hdr);
19560
19561 return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19562 msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
19563
19564 nla_put_failure:
19565 nlmsg_free(msg);
19566 return -EINVAL;
19567 }
19568 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19569
19570 void
nl80211_radar_notify(struct cfg80211_registered_device * rdev,const struct cfg80211_chan_def * chandef,enum nl80211_radar_event event,struct net_device * netdev,gfp_t gfp)19571 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19572 const struct cfg80211_chan_def *chandef,
19573 enum nl80211_radar_event event,
19574 struct net_device *netdev, gfp_t gfp)
19575 {
19576 struct sk_buff *msg;
19577 void *hdr;
19578
19579 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19580 if (!msg)
19581 return;
19582
19583 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19584 if (!hdr) {
19585 nlmsg_free(msg);
19586 return;
19587 }
19588
19589 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19590 goto nla_put_failure;
19591
19592 /* NOP and radar events don't need a netdev parameter */
19593 if (netdev) {
19594 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19595
19596 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19597 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19598 NL80211_ATTR_PAD))
19599 goto nla_put_failure;
19600 }
19601
19602 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19603 goto nla_put_failure;
19604
19605 if (nl80211_send_chandef(msg, chandef))
19606 goto nla_put_failure;
19607
19608 genlmsg_end(msg, hdr);
19609
19610 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19611 NL80211_MCGRP_MLME, gfp);
19612 return;
19613
19614 nla_put_failure:
19615 nlmsg_free(msg);
19616 }
19617
cfg80211_sta_opmode_change_notify(struct net_device * dev,const u8 * mac,struct sta_opmode_info * sta_opmode,gfp_t gfp)19618 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19619 struct sta_opmode_info *sta_opmode,
19620 gfp_t gfp)
19621 {
19622 struct sk_buff *msg;
19623 struct wireless_dev *wdev = dev->ieee80211_ptr;
19624 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19625 void *hdr;
19626
19627 if (WARN_ON(!mac))
19628 return;
19629
19630 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19631 if (!msg)
19632 return;
19633
19634 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19635 if (!hdr) {
19636 nlmsg_free(msg);
19637 return;
19638 }
19639
19640 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19641 goto nla_put_failure;
19642
19643 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19644 goto nla_put_failure;
19645
19646 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19647 goto nla_put_failure;
19648
19649 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19650 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19651 goto nla_put_failure;
19652
19653 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19654 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19655 goto nla_put_failure;
19656
19657 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19658 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19659 goto nla_put_failure;
19660
19661 genlmsg_end(msg, hdr);
19662
19663 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19664 NL80211_MCGRP_MLME, gfp);
19665
19666 return;
19667
19668 nla_put_failure:
19669 nlmsg_free(msg);
19670 }
19671 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19672
cfg80211_probe_status(struct net_device * dev,const u8 * addr,u64 cookie,bool acked,s32 ack_signal,bool is_valid_ack_signal,gfp_t gfp)19673 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19674 u64 cookie, bool acked, s32 ack_signal,
19675 bool is_valid_ack_signal, gfp_t gfp)
19676 {
19677 struct wireless_dev *wdev = dev->ieee80211_ptr;
19678 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19679 struct sk_buff *msg;
19680 void *hdr;
19681
19682 trace_cfg80211_probe_status(dev, addr, cookie, acked);
19683
19684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19685
19686 if (!msg)
19687 return;
19688
19689 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19690 if (!hdr) {
19691 nlmsg_free(msg);
19692 return;
19693 }
19694
19695 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19696 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19697 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19698 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19699 NL80211_ATTR_PAD) ||
19700 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19701 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19702 ack_signal)))
19703 goto nla_put_failure;
19704
19705 genlmsg_end(msg, hdr);
19706
19707 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19708 NL80211_MCGRP_MLME, gfp);
19709 return;
19710
19711 nla_put_failure:
19712 nlmsg_free(msg);
19713 }
19714 EXPORT_SYMBOL(cfg80211_probe_status);
19715
cfg80211_report_obss_beacon_khz(struct wiphy * wiphy,const u8 * frame,size_t len,int freq,int sig_dbm)19716 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19717 size_t len, int freq, int sig_dbm)
19718 {
19719 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19720 struct sk_buff *msg;
19721 void *hdr;
19722 struct cfg80211_beacon_registration *reg;
19723
19724 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19725
19726 spin_lock_bh(&rdev->beacon_registrations_lock);
19727 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19728 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19729 if (!msg) {
19730 spin_unlock_bh(&rdev->beacon_registrations_lock);
19731 return;
19732 }
19733
19734 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19735 if (!hdr)
19736 goto nla_put_failure;
19737
19738 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19739 (freq &&
19740 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19741 KHZ_TO_MHZ(freq)) ||
19742 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19743 freq % 1000))) ||
19744 (sig_dbm &&
19745 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19746 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19747 goto nla_put_failure;
19748
19749 genlmsg_end(msg, hdr);
19750
19751 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19752 }
19753 spin_unlock_bh(&rdev->beacon_registrations_lock);
19754 return;
19755
19756 nla_put_failure:
19757 spin_unlock_bh(&rdev->beacon_registrations_lock);
19758 nlmsg_free(msg);
19759 }
19760 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19761
19762 #ifdef CONFIG_PM
cfg80211_net_detect_results(struct sk_buff * msg,struct cfg80211_wowlan_wakeup * wakeup)19763 static int cfg80211_net_detect_results(struct sk_buff *msg,
19764 struct cfg80211_wowlan_wakeup *wakeup)
19765 {
19766 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19767 struct nlattr *nl_results, *nl_match, *nl_freqs;
19768 int i, j;
19769
19770 nl_results = nla_nest_start_noflag(msg,
19771 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19772 if (!nl_results)
19773 return -EMSGSIZE;
19774
19775 for (i = 0; i < nd->n_matches; i++) {
19776 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19777
19778 nl_match = nla_nest_start_noflag(msg, i);
19779 if (!nl_match)
19780 break;
19781
19782 /* The SSID attribute is optional in nl80211, but for
19783 * simplicity reasons it's always present in the
19784 * cfg80211 structure. If a driver can't pass the
19785 * SSID, that needs to be changed. A zero length SSID
19786 * is still a valid SSID (wildcard), so it cannot be
19787 * used for this purpose.
19788 */
19789 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19790 match->ssid.ssid)) {
19791 nla_nest_cancel(msg, nl_match);
19792 goto out;
19793 }
19794
19795 if (match->n_channels) {
19796 nl_freqs = nla_nest_start_noflag(msg,
19797 NL80211_ATTR_SCAN_FREQUENCIES);
19798 if (!nl_freqs) {
19799 nla_nest_cancel(msg, nl_match);
19800 goto out;
19801 }
19802
19803 for (j = 0; j < match->n_channels; j++) {
19804 if (nla_put_u32(msg, j, match->channels[j])) {
19805 nla_nest_cancel(msg, nl_freqs);
19806 nla_nest_cancel(msg, nl_match);
19807 goto out;
19808 }
19809 }
19810
19811 nla_nest_end(msg, nl_freqs);
19812 }
19813
19814 nla_nest_end(msg, nl_match);
19815 }
19816
19817 out:
19818 nla_nest_end(msg, nl_results);
19819 return 0;
19820 }
19821
cfg80211_report_wowlan_wakeup(struct wireless_dev * wdev,struct cfg80211_wowlan_wakeup * wakeup,gfp_t gfp)19822 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19823 struct cfg80211_wowlan_wakeup *wakeup,
19824 gfp_t gfp)
19825 {
19826 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19827 struct sk_buff *msg;
19828 void *hdr;
19829 int size = 200;
19830
19831 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19832
19833 if (wakeup)
19834 size += wakeup->packet_present_len;
19835
19836 msg = nlmsg_new(size, gfp);
19837 if (!msg)
19838 return;
19839
19840 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19841 if (!hdr)
19842 goto free_msg;
19843
19844 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19845 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19846 NL80211_ATTR_PAD))
19847 goto free_msg;
19848
19849 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19850 wdev->netdev->ifindex))
19851 goto free_msg;
19852
19853 if (wakeup) {
19854 struct nlattr *reasons;
19855
19856 reasons = nla_nest_start_noflag(msg,
19857 NL80211_ATTR_WOWLAN_TRIGGERS);
19858 if (!reasons)
19859 goto free_msg;
19860
19861 if (wakeup->disconnect &&
19862 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19863 goto free_msg;
19864 if (wakeup->magic_pkt &&
19865 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19866 goto free_msg;
19867 if (wakeup->gtk_rekey_failure &&
19868 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19869 goto free_msg;
19870 if (wakeup->eap_identity_req &&
19871 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19872 goto free_msg;
19873 if (wakeup->four_way_handshake &&
19874 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19875 goto free_msg;
19876 if (wakeup->rfkill_release &&
19877 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19878 goto free_msg;
19879
19880 if (wakeup->pattern_idx >= 0 &&
19881 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19882 wakeup->pattern_idx))
19883 goto free_msg;
19884
19885 if (wakeup->tcp_match &&
19886 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19887 goto free_msg;
19888
19889 if (wakeup->tcp_connlost &&
19890 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19891 goto free_msg;
19892
19893 if (wakeup->tcp_nomoretokens &&
19894 nla_put_flag(msg,
19895 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19896 goto free_msg;
19897
19898 if (wakeup->packet) {
19899 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19900 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19901
19902 if (!wakeup->packet_80211) {
19903 pkt_attr =
19904 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19905 len_attr =
19906 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19907 }
19908
19909 if (wakeup->packet_len &&
19910 nla_put_u32(msg, len_attr, wakeup->packet_len))
19911 goto free_msg;
19912
19913 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19914 wakeup->packet))
19915 goto free_msg;
19916 }
19917
19918 if (wakeup->net_detect &&
19919 cfg80211_net_detect_results(msg, wakeup))
19920 goto free_msg;
19921
19922 nla_nest_end(msg, reasons);
19923 }
19924
19925 genlmsg_end(msg, hdr);
19926
19927 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19928 NL80211_MCGRP_MLME, gfp);
19929 return;
19930
19931 free_msg:
19932 nlmsg_free(msg);
19933 }
19934 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19935 #endif
19936
cfg80211_tdls_oper_request(struct net_device * dev,const u8 * peer,enum nl80211_tdls_operation oper,u16 reason_code,gfp_t gfp)19937 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19938 enum nl80211_tdls_operation oper,
19939 u16 reason_code, gfp_t gfp)
19940 {
19941 struct wireless_dev *wdev = dev->ieee80211_ptr;
19942 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19943 struct sk_buff *msg;
19944 void *hdr;
19945
19946 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19947 reason_code);
19948
19949 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19950 if (!msg)
19951 return;
19952
19953 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19954 if (!hdr) {
19955 nlmsg_free(msg);
19956 return;
19957 }
19958
19959 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19960 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19961 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19962 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19963 (reason_code > 0 &&
19964 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19965 goto nla_put_failure;
19966
19967 genlmsg_end(msg, hdr);
19968
19969 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19970 NL80211_MCGRP_MLME, gfp);
19971 return;
19972
19973 nla_put_failure:
19974 nlmsg_free(msg);
19975 }
19976 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19977
nl80211_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)19978 static int nl80211_netlink_notify(struct notifier_block * nb,
19979 unsigned long state,
19980 void *_notify)
19981 {
19982 struct netlink_notify *notify = _notify;
19983 struct cfg80211_registered_device *rdev;
19984 struct wireless_dev *wdev;
19985 struct cfg80211_beacon_registration *reg, *tmp;
19986
19987 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19988 return NOTIFY_DONE;
19989
19990 rcu_read_lock();
19991
19992 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19993 struct cfg80211_sched_scan_request *sched_scan_req;
19994
19995 list_for_each_entry_rcu(sched_scan_req,
19996 &rdev->sched_scan_req_list,
19997 list) {
19998 if (sched_scan_req->owner_nlportid == notify->portid) {
19999 sched_scan_req->nl_owner_dead = true;
20000 wiphy_work_queue(&rdev->wiphy,
20001 &rdev->sched_scan_stop_wk);
20002 }
20003 }
20004
20005 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
20006 cfg80211_mlme_unregister_socket(wdev, notify->portid);
20007
20008 if (wdev->owner_nlportid == notify->portid) {
20009 wdev->nl_owner_dead = true;
20010 schedule_work(&rdev->destroy_work);
20011 } else if (wdev->conn_owner_nlportid == notify->portid) {
20012 schedule_work(&wdev->disconnect_wk);
20013 }
20014
20015 cfg80211_release_pmsr(wdev, notify->portid);
20016 }
20017
20018 spin_lock_bh(&rdev->beacon_registrations_lock);
20019 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
20020 list) {
20021 if (reg->nlportid == notify->portid) {
20022 list_del(®->list);
20023 kfree(reg);
20024 break;
20025 }
20026 }
20027 spin_unlock_bh(&rdev->beacon_registrations_lock);
20028 }
20029
20030 rcu_read_unlock();
20031
20032 /*
20033 * It is possible that the user space process that is controlling the
20034 * indoor setting disappeared, so notify the regulatory core.
20035 */
20036 regulatory_netlink_notify(notify->portid);
20037 return NOTIFY_OK;
20038 }
20039
20040 static struct notifier_block nl80211_netlink_notifier = {
20041 .notifier_call = nl80211_netlink_notify,
20042 };
20043
cfg80211_ft_event(struct net_device * netdev,struct cfg80211_ft_event_params * ft_event)20044 void cfg80211_ft_event(struct net_device *netdev,
20045 struct cfg80211_ft_event_params *ft_event)
20046 {
20047 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20048 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20049 struct sk_buff *msg;
20050 void *hdr;
20051
20052 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
20053
20054 if (!ft_event->target_ap)
20055 return;
20056
20057 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
20058 GFP_KERNEL);
20059 if (!msg)
20060 return;
20061
20062 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
20063 if (!hdr)
20064 goto out;
20065
20066 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20067 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20068 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
20069 goto out;
20070
20071 if (ft_event->ies &&
20072 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
20073 goto out;
20074 if (ft_event->ric_ies &&
20075 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
20076 ft_event->ric_ies))
20077 goto out;
20078
20079 genlmsg_end(msg, hdr);
20080
20081 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20082 NL80211_MCGRP_MLME, GFP_KERNEL);
20083 return;
20084 out:
20085 nlmsg_free(msg);
20086 }
20087 EXPORT_SYMBOL(cfg80211_ft_event);
20088
cfg80211_crit_proto_stopped(struct wireless_dev * wdev,gfp_t gfp)20089 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
20090 {
20091 struct cfg80211_registered_device *rdev;
20092 struct sk_buff *msg;
20093 void *hdr;
20094 u32 nlportid;
20095
20096 rdev = wiphy_to_rdev(wdev->wiphy);
20097 if (!rdev->crit_proto_nlportid)
20098 return;
20099
20100 nlportid = rdev->crit_proto_nlportid;
20101 rdev->crit_proto_nlportid = 0;
20102
20103 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20104 if (!msg)
20105 return;
20106
20107 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
20108 if (!hdr)
20109 goto nla_put_failure;
20110
20111 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20112 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20113 NL80211_ATTR_PAD))
20114 goto nla_put_failure;
20115
20116 genlmsg_end(msg, hdr);
20117
20118 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
20119 return;
20120
20121 nla_put_failure:
20122 nlmsg_free(msg);
20123 }
20124 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
20125
nl80211_send_ap_stopped(struct wireless_dev * wdev,unsigned int link_id)20126 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
20127 {
20128 struct wiphy *wiphy = wdev->wiphy;
20129 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20130 struct sk_buff *msg;
20131 void *hdr;
20132
20133 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
20134 if (!msg)
20135 return;
20136
20137 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
20138 if (!hdr)
20139 goto out;
20140
20141 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20142 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
20143 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20144 NL80211_ATTR_PAD) ||
20145 (wdev->valid_links &&
20146 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
20147 goto out;
20148
20149 genlmsg_end(msg, hdr);
20150
20151 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
20152 NL80211_MCGRP_MLME, GFP_KERNEL);
20153 return;
20154 out:
20155 nlmsg_free(msg);
20156 }
20157
cfg80211_external_auth_request(struct net_device * dev,struct cfg80211_external_auth_params * params,gfp_t gfp)20158 int cfg80211_external_auth_request(struct net_device *dev,
20159 struct cfg80211_external_auth_params *params,
20160 gfp_t gfp)
20161 {
20162 struct wireless_dev *wdev = dev->ieee80211_ptr;
20163 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
20164 struct sk_buff *msg;
20165 void *hdr;
20166
20167 if (!wdev->conn_owner_nlportid)
20168 return -EINVAL;
20169
20170 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20171 if (!msg)
20172 return -ENOMEM;
20173
20174 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
20175 if (!hdr)
20176 goto nla_put_failure;
20177
20178 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20179 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
20180 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
20181 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
20182 params->action) ||
20183 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
20184 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
20185 params->ssid.ssid) ||
20186 (!is_zero_ether_addr(params->mld_addr) &&
20187 nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
20188 goto nla_put_failure;
20189
20190 genlmsg_end(msg, hdr);
20191 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
20192 wdev->conn_owner_nlportid);
20193 return 0;
20194
20195 nla_put_failure:
20196 nlmsg_free(msg);
20197 return -ENOBUFS;
20198 }
20199 EXPORT_SYMBOL(cfg80211_external_auth_request);
20200
cfg80211_update_owe_info_event(struct net_device * netdev,struct cfg80211_update_owe_info * owe_info,gfp_t gfp)20201 void cfg80211_update_owe_info_event(struct net_device *netdev,
20202 struct cfg80211_update_owe_info *owe_info,
20203 gfp_t gfp)
20204 {
20205 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20206 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20207 struct sk_buff *msg;
20208 void *hdr;
20209
20210 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
20211
20212 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20213 if (!msg)
20214 return;
20215
20216 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
20217 if (!hdr)
20218 goto nla_put_failure;
20219
20220 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20221 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20222 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
20223 goto nla_put_failure;
20224
20225 if (!owe_info->ie_len ||
20226 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
20227 goto nla_put_failure;
20228
20229 if (owe_info->assoc_link_id != -1) {
20230 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
20231 owe_info->assoc_link_id))
20232 goto nla_put_failure;
20233
20234 if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
20235 nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
20236 owe_info->peer_mld_addr))
20237 goto nla_put_failure;
20238 }
20239
20240 genlmsg_end(msg, hdr);
20241
20242 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20243 NL80211_MCGRP_MLME, gfp);
20244 return;
20245
20246 nla_put_failure:
20247 genlmsg_cancel(msg, hdr);
20248 nlmsg_free(msg);
20249 }
20250 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
20251
20252 /* initialisation/exit functions */
20253
nl80211_init(void)20254 int __init nl80211_init(void)
20255 {
20256 int err;
20257
20258 err = genl_register_family(&nl80211_fam);
20259 if (err)
20260 return err;
20261
20262 err = netlink_register_notifier(&nl80211_netlink_notifier);
20263 if (err)
20264 goto err_out;
20265
20266 return 0;
20267 err_out:
20268 genl_unregister_family(&nl80211_fam);
20269 return err;
20270 }
20271
nl80211_exit(void)20272 void nl80211_exit(void)
20273 {
20274 netlink_unregister_notifier(&nl80211_netlink_notifier);
20275 genl_unregister_family(&nl80211_fam);
20276 }
20277