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->channels[n_channels];
9683 request->n_ssids = n_ssids;
9684 if (ie_len) {
9685 if (n_ssids)
9686 request->ie = (void *)(request->ssids + n_ssids);
9687 else
9688 request->ie = (void *)(request->channels + n_channels);
9689 }
9690
9691 if (n_match_sets) {
9692 if (request->ie)
9693 request->match_sets = (void *)(request->ie + ie_len);
9694 else if (n_ssids)
9695 request->match_sets =
9696 (void *)(request->ssids + n_ssids);
9697 else
9698 request->match_sets =
9699 (void *)(request->channels + n_channels);
9700 }
9701 request->n_match_sets = n_match_sets;
9702
9703 if (n_match_sets)
9704 request->scan_plans = (void *)(request->match_sets +
9705 n_match_sets);
9706 else if (request->ie)
9707 request->scan_plans = (void *)(request->ie + ie_len);
9708 else if (n_ssids)
9709 request->scan_plans = (void *)(request->ssids + n_ssids);
9710 else
9711 request->scan_plans = (void *)(request->channels + n_channels);
9712
9713 request->n_scan_plans = n_plans;
9714
9715 i = 0;
9716 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9717 /* user specified, bail out if channel not found */
9718 nla_for_each_nested(attr,
9719 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9720 tmp) {
9721 struct ieee80211_channel *chan;
9722
9723 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9724
9725 if (!chan) {
9726 err = -EINVAL;
9727 goto out_free;
9728 }
9729
9730 /* ignore disabled channels */
9731 if (chan->flags & IEEE80211_CHAN_DISABLED)
9732 continue;
9733
9734 request->channels[i] = chan;
9735 i++;
9736 }
9737 } else {
9738 /* all channels */
9739 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9740 int j;
9741
9742 if (!wiphy->bands[band])
9743 continue;
9744 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9745 struct ieee80211_channel *chan;
9746
9747 chan = &wiphy->bands[band]->channels[j];
9748
9749 if (chan->flags & IEEE80211_CHAN_DISABLED)
9750 continue;
9751
9752 request->channels[i] = chan;
9753 i++;
9754 }
9755 }
9756 }
9757
9758 if (!i) {
9759 err = -EINVAL;
9760 goto out_free;
9761 }
9762
9763 request->n_channels = i;
9764
9765 i = 0;
9766 if (n_ssids) {
9767 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9768 tmp) {
9769 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9770 err = -EINVAL;
9771 goto out_free;
9772 }
9773 request->ssids[i].ssid_len = nla_len(attr);
9774 memcpy(request->ssids[i].ssid, nla_data(attr),
9775 nla_len(attr));
9776 i++;
9777 }
9778 }
9779
9780 i = 0;
9781 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9782 nla_for_each_nested(attr,
9783 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9784 tmp) {
9785 struct nlattr *ssid, *bssid, *rssi;
9786
9787 err = nla_parse_nested_deprecated(tb,
9788 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9789 attr,
9790 nl80211_match_policy,
9791 NULL);
9792 if (err)
9793 goto out_free;
9794 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9795 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9796
9797 if (!ssid && !bssid) {
9798 i++;
9799 continue;
9800 }
9801
9802 if (WARN_ON(i >= n_match_sets)) {
9803 /* this indicates a programming error,
9804 * the loop above should have verified
9805 * things properly
9806 */
9807 err = -EINVAL;
9808 goto out_free;
9809 }
9810
9811 if (ssid) {
9812 memcpy(request->match_sets[i].ssid.ssid,
9813 nla_data(ssid), nla_len(ssid));
9814 request->match_sets[i].ssid.ssid_len =
9815 nla_len(ssid);
9816 }
9817 if (bssid)
9818 memcpy(request->match_sets[i].bssid,
9819 nla_data(bssid), ETH_ALEN);
9820
9821 /* special attribute - old implementation w/a */
9822 request->match_sets[i].rssi_thold = default_match_rssi;
9823 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9824 if (rssi)
9825 request->match_sets[i].rssi_thold =
9826 nla_get_s32(rssi);
9827
9828 /* Parse per band RSSI attribute */
9829 err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9830 &request->match_sets[i],
9831 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9832 request->match_sets[i].rssi_thold);
9833 if (err)
9834 goto out_free;
9835
9836 i++;
9837 }
9838
9839 /* there was no other matchset, so the RSSI one is alone */
9840 if (i == 0 && n_match_sets)
9841 request->match_sets[0].rssi_thold = default_match_rssi;
9842
9843 request->min_rssi_thold = INT_MAX;
9844 for (i = 0; i < n_match_sets; i++)
9845 request->min_rssi_thold =
9846 min(request->match_sets[i].rssi_thold,
9847 request->min_rssi_thold);
9848 } else {
9849 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9850 }
9851
9852 if (ie_len) {
9853 request->ie_len = ie_len;
9854 memcpy((void *)request->ie,
9855 nla_data(attrs[NL80211_ATTR_IE]),
9856 request->ie_len);
9857 }
9858
9859 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9860 if (err)
9861 goto out_free;
9862
9863 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9864 request->delay =
9865 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9866
9867 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9868 request->relative_rssi = nla_get_s8(
9869 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9870 request->relative_rssi_set = true;
9871 }
9872
9873 if (request->relative_rssi_set &&
9874 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9875 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9876
9877 rssi_adjust = nla_data(
9878 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9879 request->rssi_adjust.band = rssi_adjust->band;
9880 request->rssi_adjust.delta = rssi_adjust->delta;
9881 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9882 err = -EINVAL;
9883 goto out_free;
9884 }
9885 }
9886
9887 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9888 if (err)
9889 goto out_free;
9890
9891 request->scan_start = jiffies;
9892
9893 return request;
9894
9895 out_free:
9896 kfree(request);
9897 return ERR_PTR(err);
9898 }
9899
nl80211_start_sched_scan(struct sk_buff * skb,struct genl_info * info)9900 static int nl80211_start_sched_scan(struct sk_buff *skb,
9901 struct genl_info *info)
9902 {
9903 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9904 struct net_device *dev = info->user_ptr[1];
9905 struct wireless_dev *wdev = dev->ieee80211_ptr;
9906 struct cfg80211_sched_scan_request *sched_scan_req;
9907 bool want_multi;
9908 int err;
9909
9910 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9911 return -EOPNOTSUPP;
9912
9913 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9914 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9915 if (err)
9916 return err;
9917
9918 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9919 info->attrs,
9920 rdev->wiphy.max_match_sets);
9921
9922 err = PTR_ERR_OR_ZERO(sched_scan_req);
9923 if (err)
9924 goto out_err;
9925
9926 /* leave request id zero for legacy request
9927 * or if driver does not support multi-scheduled scan
9928 */
9929 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9930 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9931
9932 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9933 if (err)
9934 goto out_free;
9935
9936 sched_scan_req->dev = dev;
9937 sched_scan_req->wiphy = &rdev->wiphy;
9938
9939 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9940 sched_scan_req->owner_nlportid = info->snd_portid;
9941
9942 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9943
9944 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9945 return 0;
9946
9947 out_free:
9948 kfree(sched_scan_req);
9949 out_err:
9950 return err;
9951 }
9952
nl80211_stop_sched_scan(struct sk_buff * skb,struct genl_info * info)9953 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9954 struct genl_info *info)
9955 {
9956 struct cfg80211_sched_scan_request *req;
9957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9958 u64 cookie;
9959
9960 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9961 return -EOPNOTSUPP;
9962
9963 if (info->attrs[NL80211_ATTR_COOKIE]) {
9964 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9965 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9966 }
9967
9968 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9969 struct cfg80211_sched_scan_request,
9970 list);
9971 if (!req || req->reqid ||
9972 (req->owner_nlportid &&
9973 req->owner_nlportid != info->snd_portid))
9974 return -ENOENT;
9975
9976 return cfg80211_stop_sched_scan_req(rdev, req, false);
9977 }
9978
nl80211_start_radar_detection(struct sk_buff * skb,struct genl_info * info)9979 static int nl80211_start_radar_detection(struct sk_buff *skb,
9980 struct genl_info *info)
9981 {
9982 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9983 struct net_device *dev = info->user_ptr[1];
9984 struct wireless_dev *wdev = dev->ieee80211_ptr;
9985 struct wiphy *wiphy = wdev->wiphy;
9986 struct cfg80211_chan_def chandef;
9987 enum nl80211_dfs_regions dfs_region;
9988 unsigned int cac_time_ms;
9989 int err = -EINVAL;
9990
9991 flush_delayed_work(&rdev->dfs_update_channels_wk);
9992
9993 wiphy_lock(wiphy);
9994
9995 dfs_region = reg_get_dfs_region(wiphy);
9996 if (dfs_region == NL80211_DFS_UNSET)
9997 goto unlock;
9998
9999 err = nl80211_parse_chandef(rdev, info, &chandef);
10000 if (err)
10001 goto unlock;
10002
10003 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10004 if (err < 0)
10005 goto unlock;
10006
10007 if (err == 0) {
10008 err = -EINVAL;
10009 goto unlock;
10010 }
10011
10012 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
10013 err = -EINVAL;
10014 goto unlock;
10015 }
10016
10017 if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
10018 err = cfg80211_start_background_radar_detection(rdev, wdev,
10019 &chandef);
10020 goto unlock;
10021 }
10022
10023 if (netif_carrier_ok(dev)) {
10024 err = -EBUSY;
10025 goto unlock;
10026 }
10027
10028 if (wdev->cac_started) {
10029 err = -EBUSY;
10030 goto unlock;
10031 }
10032
10033 /* CAC start is offloaded to HW and can't be started manually */
10034 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
10035 err = -EOPNOTSUPP;
10036 goto unlock;
10037 }
10038
10039 if (!rdev->ops->start_radar_detection) {
10040 err = -EOPNOTSUPP;
10041 goto unlock;
10042 }
10043
10044 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
10045 if (WARN_ON(!cac_time_ms))
10046 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
10047
10048 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
10049 if (!err) {
10050 wdev->links[0].ap.chandef = chandef;
10051 wdev->cac_started = true;
10052 wdev->cac_start_time = jiffies;
10053 wdev->cac_time_ms = cac_time_ms;
10054 }
10055 unlock:
10056 wiphy_unlock(wiphy);
10057
10058 return err;
10059 }
10060
nl80211_notify_radar_detection(struct sk_buff * skb,struct genl_info * info)10061 static int nl80211_notify_radar_detection(struct sk_buff *skb,
10062 struct genl_info *info)
10063 {
10064 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10065 struct net_device *dev = info->user_ptr[1];
10066 struct wireless_dev *wdev = dev->ieee80211_ptr;
10067 struct wiphy *wiphy = wdev->wiphy;
10068 struct cfg80211_chan_def chandef;
10069 enum nl80211_dfs_regions dfs_region;
10070 int err;
10071
10072 dfs_region = reg_get_dfs_region(wiphy);
10073 if (dfs_region == NL80211_DFS_UNSET) {
10074 GENL_SET_ERR_MSG(info,
10075 "DFS Region is not set. Unexpected Radar indication");
10076 return -EINVAL;
10077 }
10078
10079 err = nl80211_parse_chandef(rdev, info, &chandef);
10080 if (err) {
10081 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
10082 return err;
10083 }
10084
10085 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10086 if (err < 0) {
10087 GENL_SET_ERR_MSG(info, "chandef is invalid");
10088 return err;
10089 }
10090
10091 if (err == 0) {
10092 GENL_SET_ERR_MSG(info,
10093 "Unexpected Radar indication for chandef/iftype");
10094 return -EINVAL;
10095 }
10096
10097 /* Do not process this notification if radar is already detected
10098 * by kernel on this channel, and return success.
10099 */
10100 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
10101 return 0;
10102
10103 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
10104
10105 cfg80211_sched_dfs_chan_update(rdev);
10106
10107 rdev->radar_chandef = chandef;
10108
10109 /* Propagate this notification to other radios as well */
10110 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
10111
10112 return 0;
10113 }
10114
nl80211_channel_switch(struct sk_buff * skb,struct genl_info * info)10115 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
10116 {
10117 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10118 unsigned int link_id = nl80211_link_id(info->attrs);
10119 struct net_device *dev = info->user_ptr[1];
10120 struct wireless_dev *wdev = dev->ieee80211_ptr;
10121 struct cfg80211_csa_settings params;
10122 struct nlattr **csa_attrs = NULL;
10123 int err;
10124 bool need_new_beacon = false;
10125 bool need_handle_dfs_flag = true;
10126 int len, i;
10127 u32 cs_count;
10128
10129 if (!rdev->ops->channel_switch ||
10130 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
10131 return -EOPNOTSUPP;
10132
10133 switch (dev->ieee80211_ptr->iftype) {
10134 case NL80211_IFTYPE_AP:
10135 case NL80211_IFTYPE_P2P_GO:
10136 need_new_beacon = true;
10137 /* For all modes except AP the handle_dfs flag needs to be
10138 * supplied to tell the kernel that userspace will handle radar
10139 * events when they happen. Otherwise a switch to a channel
10140 * requiring DFS will be rejected.
10141 */
10142 need_handle_dfs_flag = false;
10143
10144 /* useless if AP is not running */
10145 if (!wdev->links[link_id].ap.beacon_interval)
10146 return -ENOTCONN;
10147 break;
10148 case NL80211_IFTYPE_ADHOC:
10149 if (!wdev->u.ibss.ssid_len)
10150 return -ENOTCONN;
10151 break;
10152 case NL80211_IFTYPE_MESH_POINT:
10153 if (!wdev->u.mesh.id_len)
10154 return -ENOTCONN;
10155 break;
10156 default:
10157 return -EOPNOTSUPP;
10158 }
10159
10160 memset(¶ms, 0, sizeof(params));
10161 params.beacon_csa.ftm_responder = -1;
10162
10163 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10164 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
10165 return -EINVAL;
10166
10167 /* only important for AP, IBSS and mesh create IEs internally */
10168 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
10169 return -EINVAL;
10170
10171 /* Even though the attribute is u32, the specification says
10172 * u8, so let's make sure we don't overflow.
10173 */
10174 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
10175 if (cs_count > 255)
10176 return -EINVAL;
10177
10178 params.count = cs_count;
10179
10180 if (!need_new_beacon)
10181 goto skip_beacons;
10182
10183 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after,
10184 info->extack);
10185 if (err)
10186 goto free;
10187
10188 csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
10189 GFP_KERNEL);
10190 if (!csa_attrs) {
10191 err = -ENOMEM;
10192 goto free;
10193 }
10194
10195 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
10196 info->attrs[NL80211_ATTR_CSA_IES],
10197 nl80211_policy, info->extack);
10198 if (err)
10199 goto free;
10200
10201 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa,
10202 info->extack);
10203 if (err)
10204 goto free;
10205
10206 if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
10207 err = -EINVAL;
10208 goto free;
10209 }
10210
10211 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10212 if (!len || (len % sizeof(u16))) {
10213 err = -EINVAL;
10214 goto free;
10215 }
10216
10217 params.n_counter_offsets_beacon = len / sizeof(u16);
10218 if (rdev->wiphy.max_num_csa_counters &&
10219 (params.n_counter_offsets_beacon >
10220 rdev->wiphy.max_num_csa_counters)) {
10221 err = -EINVAL;
10222 goto free;
10223 }
10224
10225 params.counter_offsets_beacon =
10226 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10227
10228 /* sanity checks - counters should fit and be the same */
10229 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
10230 u16 offset = params.counter_offsets_beacon[i];
10231
10232 if (offset >= params.beacon_csa.tail_len) {
10233 err = -EINVAL;
10234 goto free;
10235 }
10236
10237 if (params.beacon_csa.tail[offset] != params.count) {
10238 err = -EINVAL;
10239 goto free;
10240 }
10241 }
10242
10243 if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
10244 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10245 if (!len || (len % sizeof(u16))) {
10246 err = -EINVAL;
10247 goto free;
10248 }
10249
10250 params.n_counter_offsets_presp = len / sizeof(u16);
10251 if (rdev->wiphy.max_num_csa_counters &&
10252 (params.n_counter_offsets_presp >
10253 rdev->wiphy.max_num_csa_counters)) {
10254 err = -EINVAL;
10255 goto free;
10256 }
10257
10258 params.counter_offsets_presp =
10259 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10260
10261 /* sanity checks - counters should fit and be the same */
10262 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10263 u16 offset = params.counter_offsets_presp[i];
10264
10265 if (offset >= params.beacon_csa.probe_resp_len) {
10266 err = -EINVAL;
10267 goto free;
10268 }
10269
10270 if (params.beacon_csa.probe_resp[offset] !=
10271 params.count) {
10272 err = -EINVAL;
10273 goto free;
10274 }
10275 }
10276 }
10277
10278 skip_beacons:
10279 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
10280 if (err)
10281 goto free;
10282
10283 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
10284 wdev->iftype)) {
10285 err = -EINVAL;
10286 goto free;
10287 }
10288
10289 err = cfg80211_chandef_dfs_required(wdev->wiphy,
10290 ¶ms.chandef,
10291 wdev->iftype);
10292 if (err < 0)
10293 goto free;
10294
10295 if (err > 0) {
10296 params.radar_required = true;
10297 if (need_handle_dfs_flag &&
10298 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10299 err = -EINVAL;
10300 goto free;
10301 }
10302 }
10303
10304 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10305 params.block_tx = true;
10306
10307 if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
10308 err = nl80211_parse_punct_bitmap(rdev, info,
10309 ¶ms.chandef,
10310 ¶ms.punct_bitmap);
10311 if (err)
10312 goto free;
10313 }
10314
10315 wdev_lock(wdev);
10316 err = rdev_channel_switch(rdev, dev, ¶ms);
10317 wdev_unlock(wdev);
10318
10319 free:
10320 kfree(params.beacon_after.mbssid_ies);
10321 kfree(params.beacon_csa.mbssid_ies);
10322 kfree(params.beacon_after.rnr_ies);
10323 kfree(params.beacon_csa.rnr_ies);
10324 kfree(csa_attrs);
10325 return err;
10326 }
10327
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)10328 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10329 u32 seq, int flags,
10330 struct cfg80211_registered_device *rdev,
10331 struct wireless_dev *wdev,
10332 struct cfg80211_internal_bss *intbss)
10333 {
10334 struct cfg80211_bss *res = &intbss->pub;
10335 const struct cfg80211_bss_ies *ies;
10336 unsigned int link_id;
10337 void *hdr;
10338 struct nlattr *bss;
10339
10340 ASSERT_WDEV_LOCK(wdev);
10341
10342 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10343 NL80211_CMD_NEW_SCAN_RESULTS);
10344 if (!hdr)
10345 return -1;
10346
10347 genl_dump_check_consistent(cb, hdr);
10348
10349 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10350 goto nla_put_failure;
10351 if (wdev->netdev &&
10352 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10353 goto nla_put_failure;
10354 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10355 NL80211_ATTR_PAD))
10356 goto nla_put_failure;
10357
10358 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10359 if (!bss)
10360 goto nla_put_failure;
10361 if ((!is_zero_ether_addr(res->bssid) &&
10362 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10363 goto nla_put_failure;
10364
10365 rcu_read_lock();
10366 /* indicate whether we have probe response data or not */
10367 if (rcu_access_pointer(res->proberesp_ies) &&
10368 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10369 goto fail_unlock_rcu;
10370
10371 /* this pointer prefers to be pointed to probe response data
10372 * but is always valid
10373 */
10374 ies = rcu_dereference(res->ies);
10375 if (ies) {
10376 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10377 NL80211_BSS_PAD))
10378 goto fail_unlock_rcu;
10379 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10380 ies->len, ies->data))
10381 goto fail_unlock_rcu;
10382 }
10383
10384 /* and this pointer is always (unless driver didn't know) beacon data */
10385 ies = rcu_dereference(res->beacon_ies);
10386 if (ies && ies->from_beacon) {
10387 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10388 NL80211_BSS_PAD))
10389 goto fail_unlock_rcu;
10390 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10391 ies->len, ies->data))
10392 goto fail_unlock_rcu;
10393 }
10394 rcu_read_unlock();
10395
10396 if (res->beacon_interval &&
10397 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10398 goto nla_put_failure;
10399 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10400 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10401 nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10402 res->channel->freq_offset) ||
10403 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10404 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10405 jiffies_to_msecs(jiffies - intbss->ts)))
10406 goto nla_put_failure;
10407
10408 if (intbss->parent_tsf &&
10409 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10410 intbss->parent_tsf, NL80211_BSS_PAD) ||
10411 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10412 intbss->parent_bssid)))
10413 goto nla_put_failure;
10414
10415 if (intbss->ts_boottime &&
10416 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10417 intbss->ts_boottime, NL80211_BSS_PAD))
10418 goto nla_put_failure;
10419
10420 if (!nl80211_put_signal(msg, intbss->pub.chains,
10421 intbss->pub.chain_signal,
10422 NL80211_BSS_CHAIN_SIGNAL))
10423 goto nla_put_failure;
10424
10425 switch (rdev->wiphy.signal_type) {
10426 case CFG80211_SIGNAL_TYPE_MBM:
10427 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10428 goto nla_put_failure;
10429 break;
10430 case CFG80211_SIGNAL_TYPE_UNSPEC:
10431 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10432 goto nla_put_failure;
10433 break;
10434 default:
10435 break;
10436 }
10437
10438 switch (wdev->iftype) {
10439 case NL80211_IFTYPE_P2P_CLIENT:
10440 case NL80211_IFTYPE_STATION:
10441 for_each_valid_link(wdev, link_id) {
10442 if (intbss == wdev->links[link_id].client.current_bss &&
10443 (nla_put_u32(msg, NL80211_BSS_STATUS,
10444 NL80211_BSS_STATUS_ASSOCIATED) ||
10445 (wdev->valid_links &&
10446 (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10447 link_id) ||
10448 nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10449 wdev->u.client.connected_addr)))))
10450 goto nla_put_failure;
10451 }
10452 break;
10453 case NL80211_IFTYPE_ADHOC:
10454 if (intbss == wdev->u.ibss.current_bss &&
10455 nla_put_u32(msg, NL80211_BSS_STATUS,
10456 NL80211_BSS_STATUS_IBSS_JOINED))
10457 goto nla_put_failure;
10458 break;
10459 default:
10460 break;
10461 }
10462
10463 nla_nest_end(msg, bss);
10464
10465 genlmsg_end(msg, hdr);
10466 return 0;
10467
10468 fail_unlock_rcu:
10469 rcu_read_unlock();
10470 nla_put_failure:
10471 genlmsg_cancel(msg, hdr);
10472 return -EMSGSIZE;
10473 }
10474
nl80211_dump_scan(struct sk_buff * skb,struct netlink_callback * cb)10475 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10476 {
10477 struct cfg80211_registered_device *rdev;
10478 struct cfg80211_internal_bss *scan;
10479 struct wireless_dev *wdev;
10480 int start = cb->args[2], idx = 0;
10481 int err;
10482
10483 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10484 if (err)
10485 return err;
10486 /* nl80211_prepare_wdev_dump acquired it in the successful case */
10487 __acquire(&rdev->wiphy.mtx);
10488
10489 wdev_lock(wdev);
10490 spin_lock_bh(&rdev->bss_lock);
10491
10492 /*
10493 * dump_scan will be called multiple times to break up the scan results
10494 * into multiple messages. It is unlikely that any more bss-es will be
10495 * expired after the first call, so only call only call this on the
10496 * first dump_scan invocation.
10497 */
10498 if (start == 0)
10499 cfg80211_bss_expire(rdev);
10500
10501 cb->seq = rdev->bss_generation;
10502
10503 list_for_each_entry(scan, &rdev->bss_list, list) {
10504 if (++idx <= start)
10505 continue;
10506 if (nl80211_send_bss(skb, cb,
10507 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10508 rdev, wdev, scan) < 0) {
10509 idx--;
10510 break;
10511 }
10512 }
10513
10514 spin_unlock_bh(&rdev->bss_lock);
10515 wdev_unlock(wdev);
10516
10517 cb->args[2] = idx;
10518 wiphy_unlock(&rdev->wiphy);
10519
10520 return skb->len;
10521 }
10522
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)10523 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10524 int flags, struct net_device *dev,
10525 bool allow_radio_stats,
10526 struct survey_info *survey)
10527 {
10528 void *hdr;
10529 struct nlattr *infoattr;
10530
10531 /* skip radio stats if userspace didn't request them */
10532 if (!survey->channel && !allow_radio_stats)
10533 return 0;
10534
10535 hdr = nl80211hdr_put(msg, portid, seq, flags,
10536 NL80211_CMD_NEW_SURVEY_RESULTS);
10537 if (!hdr)
10538 return -ENOMEM;
10539
10540 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10541 goto nla_put_failure;
10542
10543 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10544 if (!infoattr)
10545 goto nla_put_failure;
10546
10547 if (survey->channel &&
10548 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10549 survey->channel->center_freq))
10550 goto nla_put_failure;
10551
10552 if (survey->channel && survey->channel->freq_offset &&
10553 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10554 survey->channel->freq_offset))
10555 goto nla_put_failure;
10556
10557 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10558 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10559 goto nla_put_failure;
10560 if ((survey->filled & SURVEY_INFO_IN_USE) &&
10561 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10562 goto nla_put_failure;
10563 if ((survey->filled & SURVEY_INFO_TIME) &&
10564 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10565 survey->time, NL80211_SURVEY_INFO_PAD))
10566 goto nla_put_failure;
10567 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10568 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10569 survey->time_busy, NL80211_SURVEY_INFO_PAD))
10570 goto nla_put_failure;
10571 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10572 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10573 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10574 goto nla_put_failure;
10575 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10576 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10577 survey->time_rx, NL80211_SURVEY_INFO_PAD))
10578 goto nla_put_failure;
10579 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10580 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10581 survey->time_tx, NL80211_SURVEY_INFO_PAD))
10582 goto nla_put_failure;
10583 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10584 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10585 survey->time_scan, NL80211_SURVEY_INFO_PAD))
10586 goto nla_put_failure;
10587 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10588 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10589 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10590 goto nla_put_failure;
10591
10592 nla_nest_end(msg, infoattr);
10593
10594 genlmsg_end(msg, hdr);
10595 return 0;
10596
10597 nla_put_failure:
10598 genlmsg_cancel(msg, hdr);
10599 return -EMSGSIZE;
10600 }
10601
nl80211_dump_survey(struct sk_buff * skb,struct netlink_callback * cb)10602 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10603 {
10604 struct nlattr **attrbuf;
10605 struct survey_info survey;
10606 struct cfg80211_registered_device *rdev;
10607 struct wireless_dev *wdev;
10608 int survey_idx = cb->args[2];
10609 int res;
10610 bool radio_stats;
10611
10612 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10613 if (!attrbuf)
10614 return -ENOMEM;
10615
10616 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10617 if (res) {
10618 kfree(attrbuf);
10619 return res;
10620 }
10621 /* nl80211_prepare_wdev_dump acquired it in the successful case */
10622 __acquire(&rdev->wiphy.mtx);
10623
10624 /* prepare_wdev_dump parsed the attributes */
10625 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10626
10627 if (!wdev->netdev) {
10628 res = -EINVAL;
10629 goto out_err;
10630 }
10631
10632 if (!rdev->ops->dump_survey) {
10633 res = -EOPNOTSUPP;
10634 goto out_err;
10635 }
10636
10637 while (1) {
10638 wdev_lock(wdev);
10639 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10640 wdev_unlock(wdev);
10641 if (res == -ENOENT)
10642 break;
10643 if (res)
10644 goto out_err;
10645
10646 /* don't send disabled channels, but do send non-channel data */
10647 if (survey.channel &&
10648 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10649 survey_idx++;
10650 continue;
10651 }
10652
10653 if (nl80211_send_survey(skb,
10654 NETLINK_CB(cb->skb).portid,
10655 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10656 wdev->netdev, radio_stats, &survey) < 0)
10657 goto out;
10658 survey_idx++;
10659 }
10660
10661 out:
10662 cb->args[2] = survey_idx;
10663 res = skb->len;
10664 out_err:
10665 kfree(attrbuf);
10666 wiphy_unlock(&rdev->wiphy);
10667 return res;
10668 }
10669
nl80211_valid_wpa_versions(u32 wpa_versions)10670 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10671 {
10672 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10673 NL80211_WPA_VERSION_2 |
10674 NL80211_WPA_VERSION_3));
10675 }
10676
nl80211_authenticate(struct sk_buff * skb,struct genl_info * info)10677 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10678 {
10679 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10680 struct net_device *dev = info->user_ptr[1];
10681 struct ieee80211_channel *chan;
10682 const u8 *bssid, *ssid;
10683 int err, ssid_len;
10684 enum nl80211_auth_type auth_type;
10685 struct key_parse key;
10686 bool local_state_change;
10687 struct cfg80211_auth_request req = {};
10688 u32 freq;
10689
10690 if (!info->attrs[NL80211_ATTR_MAC])
10691 return -EINVAL;
10692
10693 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10694 return -EINVAL;
10695
10696 if (!info->attrs[NL80211_ATTR_SSID])
10697 return -EINVAL;
10698
10699 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10700 return -EINVAL;
10701
10702 err = nl80211_parse_key(info, &key);
10703 if (err)
10704 return err;
10705
10706 if (key.idx >= 0) {
10707 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10708 return -EINVAL;
10709 if (!key.p.key || !key.p.key_len)
10710 return -EINVAL;
10711 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10712 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10713 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10714 key.p.key_len != WLAN_KEY_LEN_WEP104))
10715 return -EINVAL;
10716 if (key.idx > 3)
10717 return -EINVAL;
10718 } else {
10719 key.p.key_len = 0;
10720 key.p.key = NULL;
10721 }
10722
10723 if (key.idx >= 0) {
10724 int i;
10725 bool ok = false;
10726
10727 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10728 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10729 ok = true;
10730 break;
10731 }
10732 }
10733 if (!ok)
10734 return -EINVAL;
10735 }
10736
10737 if (!rdev->ops->auth)
10738 return -EOPNOTSUPP;
10739
10740 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10741 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10742 return -EOPNOTSUPP;
10743
10744 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10745 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10746 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10747 freq +=
10748 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10749
10750 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10751 if (!chan)
10752 return -EINVAL;
10753
10754 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10755 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10756
10757 if (info->attrs[NL80211_ATTR_IE]) {
10758 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10759 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10760 }
10761
10762 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10763 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10764 return -EINVAL;
10765
10766 if ((auth_type == NL80211_AUTHTYPE_SAE ||
10767 auth_type == NL80211_AUTHTYPE_FILS_SK ||
10768 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10769 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10770 !info->attrs[NL80211_ATTR_AUTH_DATA])
10771 return -EINVAL;
10772
10773 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10774 if (auth_type != NL80211_AUTHTYPE_SAE &&
10775 auth_type != NL80211_AUTHTYPE_FILS_SK &&
10776 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10777 auth_type != NL80211_AUTHTYPE_FILS_PK)
10778 return -EINVAL;
10779 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10780 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10781 }
10782
10783 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10784
10785 /*
10786 * Since we no longer track auth state, ignore
10787 * requests to only change local state.
10788 */
10789 if (local_state_change)
10790 return 0;
10791
10792 req.auth_type = auth_type;
10793 req.key = key.p.key;
10794 req.key_len = key.p.key_len;
10795 req.key_idx = key.idx;
10796 req.link_id = nl80211_link_id_or_invalid(info->attrs);
10797 if (req.link_id >= 0) {
10798 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10799 return -EINVAL;
10800 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10801 return -EINVAL;
10802 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10803 if (!is_valid_ether_addr(req.ap_mld_addr))
10804 return -EINVAL;
10805 }
10806
10807 req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10808 IEEE80211_BSS_TYPE_ESS,
10809 IEEE80211_PRIVACY_ANY);
10810 if (!req.bss)
10811 return -ENOENT;
10812
10813 wdev_lock(dev->ieee80211_ptr);
10814 err = cfg80211_mlme_auth(rdev, dev, &req);
10815 wdev_unlock(dev->ieee80211_ptr);
10816
10817 cfg80211_put_bss(&rdev->wiphy, req.bss);
10818
10819 return err;
10820 }
10821
validate_pae_over_nl80211(struct cfg80211_registered_device * rdev,struct genl_info * info)10822 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10823 struct genl_info *info)
10824 {
10825 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10826 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10827 return -EINVAL;
10828 }
10829
10830 if (!rdev->ops->tx_control_port ||
10831 !wiphy_ext_feature_isset(&rdev->wiphy,
10832 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10833 return -EOPNOTSUPP;
10834
10835 return 0;
10836 }
10837
nl80211_crypto_settings(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_crypto_settings * settings,int cipher_limit)10838 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10839 struct genl_info *info,
10840 struct cfg80211_crypto_settings *settings,
10841 int cipher_limit)
10842 {
10843 memset(settings, 0, sizeof(*settings));
10844
10845 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10846
10847 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10848 u16 proto;
10849
10850 proto = nla_get_u16(
10851 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10852 settings->control_port_ethertype = cpu_to_be16(proto);
10853 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10854 proto != ETH_P_PAE)
10855 return -EINVAL;
10856 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10857 settings->control_port_no_encrypt = true;
10858 } else
10859 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10860
10861 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10862 int r = validate_pae_over_nl80211(rdev, info);
10863
10864 if (r < 0)
10865 return r;
10866
10867 settings->control_port_over_nl80211 = true;
10868
10869 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10870 settings->control_port_no_preauth = true;
10871 }
10872
10873 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10874 void *data;
10875 int len, i;
10876
10877 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10878 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10879 settings->n_ciphers_pairwise = len / sizeof(u32);
10880
10881 if (len % sizeof(u32))
10882 return -EINVAL;
10883
10884 if (settings->n_ciphers_pairwise > cipher_limit)
10885 return -EINVAL;
10886
10887 memcpy(settings->ciphers_pairwise, data, len);
10888
10889 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10890 if (!cfg80211_supported_cipher_suite(
10891 &rdev->wiphy,
10892 settings->ciphers_pairwise[i]))
10893 return -EINVAL;
10894 }
10895
10896 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10897 settings->cipher_group =
10898 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10899 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10900 settings->cipher_group))
10901 return -EINVAL;
10902 }
10903
10904 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10905 settings->wpa_versions =
10906 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10907 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10908 return -EINVAL;
10909 }
10910
10911 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10912 void *data;
10913 int len;
10914
10915 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10916 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10917 settings->n_akm_suites = len / sizeof(u32);
10918
10919 if (len % sizeof(u32))
10920 return -EINVAL;
10921
10922 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10923 return -EINVAL;
10924
10925 memcpy(settings->akm_suites, data, len);
10926 }
10927
10928 if (info->attrs[NL80211_ATTR_PMK]) {
10929 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10930 return -EINVAL;
10931 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10932 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10933 !wiphy_ext_feature_isset(&rdev->wiphy,
10934 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10935 return -EINVAL;
10936 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10937 }
10938
10939 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10940 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10941 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10942 !wiphy_ext_feature_isset(&rdev->wiphy,
10943 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10944 return -EINVAL;
10945 settings->sae_pwd =
10946 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10947 settings->sae_pwd_len =
10948 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10949 }
10950
10951 if (info->attrs[NL80211_ATTR_SAE_PWE])
10952 settings->sae_pwe =
10953 nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10954 else
10955 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10956
10957 return 0;
10958 }
10959
nl80211_assoc_bss(struct cfg80211_registered_device * rdev,const u8 * ssid,int ssid_len,struct nlattr ** attrs)10960 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10961 const u8 *ssid, int ssid_len,
10962 struct nlattr **attrs)
10963 {
10964 struct ieee80211_channel *chan;
10965 struct cfg80211_bss *bss;
10966 const u8 *bssid;
10967 u32 freq;
10968
10969 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10970 return ERR_PTR(-EINVAL);
10971
10972 bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10973
10974 freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10975 if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10976 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10977
10978 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10979 if (!chan)
10980 return ERR_PTR(-EINVAL);
10981
10982 bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10983 ssid, ssid_len,
10984 IEEE80211_BSS_TYPE_ESS,
10985 IEEE80211_PRIVACY_ANY);
10986 if (!bss)
10987 return ERR_PTR(-ENOENT);
10988
10989 return bss;
10990 }
10991
nl80211_associate(struct sk_buff * skb,struct genl_info * info)10992 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10993 {
10994 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10995 struct net_device *dev = info->user_ptr[1];
10996 struct cfg80211_assoc_request req = {};
10997 struct nlattr **attrs = NULL;
10998 const u8 *ap_addr, *ssid;
10999 unsigned int link_id;
11000 int err, ssid_len;
11001
11002 if (dev->ieee80211_ptr->conn_owner_nlportid &&
11003 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11004 return -EPERM;
11005
11006 if (!info->attrs[NL80211_ATTR_SSID])
11007 return -EINVAL;
11008
11009 if (!rdev->ops->assoc)
11010 return -EOPNOTSUPP;
11011
11012 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11013 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11014 return -EOPNOTSUPP;
11015
11016 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11017 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11018
11019 if (info->attrs[NL80211_ATTR_IE]) {
11020 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11021 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11022
11023 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11024 req.ie, req.ie_len)) {
11025 GENL_SET_ERR_MSG(info,
11026 "non-inheritance makes no sense");
11027 return -EINVAL;
11028 }
11029 }
11030
11031 if (info->attrs[NL80211_ATTR_USE_MFP]) {
11032 enum nl80211_mfp mfp =
11033 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11034 if (mfp == NL80211_MFP_REQUIRED)
11035 req.use_mfp = true;
11036 else if (mfp != NL80211_MFP_NO)
11037 return -EINVAL;
11038 }
11039
11040 if (info->attrs[NL80211_ATTR_PREV_BSSID])
11041 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11042
11043 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11044 req.flags |= ASSOC_REQ_DISABLE_HT;
11045
11046 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11047 memcpy(&req.ht_capa_mask,
11048 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11049 sizeof(req.ht_capa_mask));
11050
11051 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11052 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11053 return -EINVAL;
11054 memcpy(&req.ht_capa,
11055 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11056 sizeof(req.ht_capa));
11057 }
11058
11059 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11060 req.flags |= ASSOC_REQ_DISABLE_VHT;
11061
11062 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11063 req.flags |= ASSOC_REQ_DISABLE_HE;
11064
11065 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11066 req.flags |= ASSOC_REQ_DISABLE_EHT;
11067
11068 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11069 memcpy(&req.vht_capa_mask,
11070 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11071 sizeof(req.vht_capa_mask));
11072
11073 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11074 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11075 return -EINVAL;
11076 memcpy(&req.vht_capa,
11077 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11078 sizeof(req.vht_capa));
11079 }
11080
11081 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11082 if (!((rdev->wiphy.features &
11083 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11084 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11085 !wiphy_ext_feature_isset(&rdev->wiphy,
11086 NL80211_EXT_FEATURE_RRM))
11087 return -EINVAL;
11088 req.flags |= ASSOC_REQ_USE_RRM;
11089 }
11090
11091 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
11092 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
11093 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
11094 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
11095 return -EINVAL;
11096 req.fils_nonces =
11097 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
11098 }
11099
11100 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
11101 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
11102 return -EINVAL;
11103 memcpy(&req.s1g_capa_mask,
11104 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
11105 sizeof(req.s1g_capa_mask));
11106 }
11107
11108 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
11109 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
11110 return -EINVAL;
11111 memcpy(&req.s1g_capa,
11112 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
11113 sizeof(req.s1g_capa));
11114 }
11115
11116 req.link_id = nl80211_link_id_or_invalid(info->attrs);
11117
11118 if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11119 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
11120 struct nlattr *link;
11121 int rem = 0;
11122
11123 if (req.link_id < 0)
11124 return -EINVAL;
11125
11126 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
11127 return -EINVAL;
11128
11129 if (info->attrs[NL80211_ATTR_MAC] ||
11130 info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11131 !info->attrs[NL80211_ATTR_MLD_ADDR])
11132 return -EINVAL;
11133
11134 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
11135 ap_addr = req.ap_mld_addr;
11136
11137 attrs = kzalloc(attrsize, GFP_KERNEL);
11138 if (!attrs)
11139 return -ENOMEM;
11140
11141 nla_for_each_nested(link,
11142 info->attrs[NL80211_ATTR_MLO_LINKS],
11143 rem) {
11144 memset(attrs, 0, attrsize);
11145
11146 nla_parse_nested(attrs, NL80211_ATTR_MAX,
11147 link, NULL, NULL);
11148
11149 if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
11150 err = -EINVAL;
11151 goto free;
11152 }
11153
11154 link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
11155 /* cannot use the same link ID again */
11156 if (req.links[link_id].bss) {
11157 err = -EINVAL;
11158 goto free;
11159 }
11160 req.links[link_id].bss =
11161 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs);
11162 if (IS_ERR(req.links[link_id].bss)) {
11163 err = PTR_ERR(req.links[link_id].bss);
11164 req.links[link_id].bss = NULL;
11165 goto free;
11166 }
11167
11168 if (attrs[NL80211_ATTR_IE]) {
11169 req.links[link_id].elems =
11170 nla_data(attrs[NL80211_ATTR_IE]);
11171 req.links[link_id].elems_len =
11172 nla_len(attrs[NL80211_ATTR_IE]);
11173
11174 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
11175 req.links[link_id].elems,
11176 req.links[link_id].elems_len)) {
11177 GENL_SET_ERR_MSG(info,
11178 "cannot deal with fragmentation");
11179 err = -EINVAL;
11180 goto free;
11181 }
11182
11183 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11184 req.links[link_id].elems,
11185 req.links[link_id].elems_len)) {
11186 GENL_SET_ERR_MSG(info,
11187 "cannot deal with non-inheritance");
11188 err = -EINVAL;
11189 goto free;
11190 }
11191 }
11192
11193 req.links[link_id].disabled =
11194 nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]);
11195 }
11196
11197 if (!req.links[req.link_id].bss) {
11198 err = -EINVAL;
11199 goto free;
11200 }
11201
11202 if (req.links[req.link_id].elems_len) {
11203 GENL_SET_ERR_MSG(info,
11204 "cannot have per-link elems on assoc link");
11205 err = -EINVAL;
11206 goto free;
11207 }
11208
11209 if (req.links[req.link_id].disabled) {
11210 GENL_SET_ERR_MSG(info,
11211 "cannot have assoc link disabled");
11212 err = -EINVAL;
11213 goto free;
11214 }
11215
11216 kfree(attrs);
11217 attrs = NULL;
11218 } else {
11219 if (req.link_id >= 0)
11220 return -EINVAL;
11221
11222 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs);
11223 if (IS_ERR(req.bss))
11224 return PTR_ERR(req.bss);
11225 ap_addr = req.bss->bssid;
11226 }
11227
11228 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
11229 if (!err) {
11230 wdev_lock(dev->ieee80211_ptr);
11231
11232 err = cfg80211_mlme_assoc(rdev, dev, &req);
11233
11234 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11235 dev->ieee80211_ptr->conn_owner_nlportid =
11236 info->snd_portid;
11237 memcpy(dev->ieee80211_ptr->disconnect_bssid,
11238 ap_addr, ETH_ALEN);
11239 }
11240
11241 wdev_unlock(dev->ieee80211_ptr);
11242 }
11243
11244 free:
11245 for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
11246 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
11247 cfg80211_put_bss(&rdev->wiphy, req.bss);
11248 kfree(attrs);
11249
11250 return err;
11251 }
11252
nl80211_deauthenticate(struct sk_buff * skb,struct genl_info * info)11253 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
11254 {
11255 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11256 struct net_device *dev = info->user_ptr[1];
11257 const u8 *ie = NULL, *bssid;
11258 int ie_len = 0, err;
11259 u16 reason_code;
11260 bool local_state_change;
11261
11262 if (dev->ieee80211_ptr->conn_owner_nlportid &&
11263 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11264 return -EPERM;
11265
11266 if (!info->attrs[NL80211_ATTR_MAC])
11267 return -EINVAL;
11268
11269 if (!info->attrs[NL80211_ATTR_REASON_CODE])
11270 return -EINVAL;
11271
11272 if (!rdev->ops->deauth)
11273 return -EOPNOTSUPP;
11274
11275 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11276 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11277 return -EOPNOTSUPP;
11278
11279 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11280
11281 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11282 if (reason_code == 0) {
11283 /* Reason Code 0 is reserved */
11284 return -EINVAL;
11285 }
11286
11287 if (info->attrs[NL80211_ATTR_IE]) {
11288 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11289 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11290 }
11291
11292 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11293
11294 wdev_lock(dev->ieee80211_ptr);
11295 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11296 local_state_change);
11297 wdev_unlock(dev->ieee80211_ptr);
11298 return err;
11299 }
11300
nl80211_disassociate(struct sk_buff * skb,struct genl_info * info)11301 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11302 {
11303 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11304 struct net_device *dev = info->user_ptr[1];
11305 const u8 *ie = NULL, *bssid;
11306 int ie_len = 0, err;
11307 u16 reason_code;
11308 bool local_state_change;
11309
11310 if (dev->ieee80211_ptr->conn_owner_nlportid &&
11311 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11312 return -EPERM;
11313
11314 if (!info->attrs[NL80211_ATTR_MAC])
11315 return -EINVAL;
11316
11317 if (!info->attrs[NL80211_ATTR_REASON_CODE])
11318 return -EINVAL;
11319
11320 if (!rdev->ops->disassoc)
11321 return -EOPNOTSUPP;
11322
11323 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11324 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11325 return -EOPNOTSUPP;
11326
11327 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11328
11329 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11330 if (reason_code == 0) {
11331 /* Reason Code 0 is reserved */
11332 return -EINVAL;
11333 }
11334
11335 if (info->attrs[NL80211_ATTR_IE]) {
11336 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11337 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11338 }
11339
11340 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11341
11342 wdev_lock(dev->ieee80211_ptr);
11343 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11344 local_state_change);
11345 wdev_unlock(dev->ieee80211_ptr);
11346 return err;
11347 }
11348
11349 static bool
nl80211_parse_mcast_rate(struct cfg80211_registered_device * rdev,int mcast_rate[NUM_NL80211_BANDS],int rateval)11350 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11351 int mcast_rate[NUM_NL80211_BANDS],
11352 int rateval)
11353 {
11354 struct wiphy *wiphy = &rdev->wiphy;
11355 bool found = false;
11356 int band, i;
11357
11358 for (band = 0; band < NUM_NL80211_BANDS; band++) {
11359 struct ieee80211_supported_band *sband;
11360
11361 sband = wiphy->bands[band];
11362 if (!sband)
11363 continue;
11364
11365 for (i = 0; i < sband->n_bitrates; i++) {
11366 if (sband->bitrates[i].bitrate == rateval) {
11367 mcast_rate[band] = i + 1;
11368 found = true;
11369 break;
11370 }
11371 }
11372 }
11373
11374 return found;
11375 }
11376
nl80211_join_ibss(struct sk_buff * skb,struct genl_info * info)11377 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11378 {
11379 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11380 struct net_device *dev = info->user_ptr[1];
11381 struct cfg80211_ibss_params ibss;
11382 struct wiphy *wiphy;
11383 struct cfg80211_cached_keys *connkeys = NULL;
11384 int err;
11385
11386 memset(&ibss, 0, sizeof(ibss));
11387
11388 if (!info->attrs[NL80211_ATTR_SSID] ||
11389 !nla_len(info->attrs[NL80211_ATTR_SSID]))
11390 return -EINVAL;
11391
11392 ibss.beacon_interval = 100;
11393
11394 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11395 ibss.beacon_interval =
11396 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11397
11398 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11399 ibss.beacon_interval);
11400 if (err)
11401 return err;
11402
11403 if (!rdev->ops->join_ibss)
11404 return -EOPNOTSUPP;
11405
11406 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11407 return -EOPNOTSUPP;
11408
11409 wiphy = &rdev->wiphy;
11410
11411 if (info->attrs[NL80211_ATTR_MAC]) {
11412 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11413
11414 if (!is_valid_ether_addr(ibss.bssid))
11415 return -EINVAL;
11416 }
11417 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11418 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11419
11420 if (info->attrs[NL80211_ATTR_IE]) {
11421 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11422 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11423 }
11424
11425 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11426 if (err)
11427 return err;
11428
11429 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11430 NL80211_IFTYPE_ADHOC))
11431 return -EINVAL;
11432
11433 switch (ibss.chandef.width) {
11434 case NL80211_CHAN_WIDTH_5:
11435 case NL80211_CHAN_WIDTH_10:
11436 case NL80211_CHAN_WIDTH_20_NOHT:
11437 break;
11438 case NL80211_CHAN_WIDTH_20:
11439 case NL80211_CHAN_WIDTH_40:
11440 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11441 return -EINVAL;
11442 break;
11443 case NL80211_CHAN_WIDTH_80:
11444 case NL80211_CHAN_WIDTH_80P80:
11445 case NL80211_CHAN_WIDTH_160:
11446 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11447 return -EINVAL;
11448 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11449 NL80211_EXT_FEATURE_VHT_IBSS))
11450 return -EINVAL;
11451 break;
11452 case NL80211_CHAN_WIDTH_320:
11453 return -EINVAL;
11454 default:
11455 return -EINVAL;
11456 }
11457
11458 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11459 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11460
11461 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11462 u8 *rates =
11463 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11464 int n_rates =
11465 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11466 struct ieee80211_supported_band *sband =
11467 wiphy->bands[ibss.chandef.chan->band];
11468
11469 err = ieee80211_get_ratemask(sband, rates, n_rates,
11470 &ibss.basic_rates);
11471 if (err)
11472 return err;
11473 }
11474
11475 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11476 memcpy(&ibss.ht_capa_mask,
11477 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11478 sizeof(ibss.ht_capa_mask));
11479
11480 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11481 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11482 return -EINVAL;
11483 memcpy(&ibss.ht_capa,
11484 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11485 sizeof(ibss.ht_capa));
11486 }
11487
11488 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11489 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11490 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11491 return -EINVAL;
11492
11493 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11494 bool no_ht = false;
11495
11496 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11497 if (IS_ERR(connkeys))
11498 return PTR_ERR(connkeys);
11499
11500 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11501 no_ht) {
11502 kfree_sensitive(connkeys);
11503 return -EINVAL;
11504 }
11505 }
11506
11507 ibss.control_port =
11508 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11509
11510 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11511 int r = validate_pae_over_nl80211(rdev, info);
11512
11513 if (r < 0) {
11514 kfree_sensitive(connkeys);
11515 return r;
11516 }
11517
11518 ibss.control_port_over_nl80211 = true;
11519 }
11520
11521 ibss.userspace_handles_dfs =
11522 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11523
11524 wdev_lock(dev->ieee80211_ptr);
11525 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11526 if (err)
11527 kfree_sensitive(connkeys);
11528 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11529 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11530 wdev_unlock(dev->ieee80211_ptr);
11531
11532 return err;
11533 }
11534
nl80211_leave_ibss(struct sk_buff * skb,struct genl_info * info)11535 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11536 {
11537 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11538 struct net_device *dev = info->user_ptr[1];
11539
11540 if (!rdev->ops->leave_ibss)
11541 return -EOPNOTSUPP;
11542
11543 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11544 return -EOPNOTSUPP;
11545
11546 return cfg80211_leave_ibss(rdev, dev, false);
11547 }
11548
nl80211_set_mcast_rate(struct sk_buff * skb,struct genl_info * info)11549 static int nl80211_set_mcast_rate(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 int mcast_rate[NUM_NL80211_BANDS];
11554 u32 nla_rate;
11555
11556 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11557 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11558 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11559 return -EOPNOTSUPP;
11560
11561 if (!rdev->ops->set_mcast_rate)
11562 return -EOPNOTSUPP;
11563
11564 memset(mcast_rate, 0, sizeof(mcast_rate));
11565
11566 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11567 return -EINVAL;
11568
11569 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11570 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11571 return -EINVAL;
11572
11573 return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11574 }
11575
11576 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)11577 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11578 struct wireless_dev *wdev, int approxlen,
11579 u32 portid, u32 seq, enum nl80211_commands cmd,
11580 enum nl80211_attrs attr,
11581 const struct nl80211_vendor_cmd_info *info,
11582 gfp_t gfp)
11583 {
11584 struct sk_buff *skb;
11585 void *hdr;
11586 struct nlattr *data;
11587
11588 skb = nlmsg_new(approxlen + 100, gfp);
11589 if (!skb)
11590 return NULL;
11591
11592 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11593 if (!hdr) {
11594 kfree_skb(skb);
11595 return NULL;
11596 }
11597
11598 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11599 goto nla_put_failure;
11600
11601 if (info) {
11602 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11603 info->vendor_id))
11604 goto nla_put_failure;
11605 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11606 info->subcmd))
11607 goto nla_put_failure;
11608 }
11609
11610 if (wdev) {
11611 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11612 wdev_id(wdev), NL80211_ATTR_PAD))
11613 goto nla_put_failure;
11614 if (wdev->netdev &&
11615 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11616 wdev->netdev->ifindex))
11617 goto nla_put_failure;
11618 }
11619
11620 data = nla_nest_start_noflag(skb, attr);
11621 if (!data)
11622 goto nla_put_failure;
11623
11624 ((void **)skb->cb)[0] = rdev;
11625 ((void **)skb->cb)[1] = hdr;
11626 ((void **)skb->cb)[2] = data;
11627
11628 return skb;
11629
11630 nla_put_failure:
11631 kfree_skb(skb);
11632 return NULL;
11633 }
11634
__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)11635 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11636 struct wireless_dev *wdev,
11637 enum nl80211_commands cmd,
11638 enum nl80211_attrs attr,
11639 unsigned int portid,
11640 int vendor_event_idx,
11641 int approxlen, gfp_t gfp)
11642 {
11643 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11644 const struct nl80211_vendor_cmd_info *info;
11645
11646 switch (cmd) {
11647 case NL80211_CMD_TESTMODE:
11648 if (WARN_ON(vendor_event_idx != -1))
11649 return NULL;
11650 info = NULL;
11651 break;
11652 case NL80211_CMD_VENDOR:
11653 if (WARN_ON(vendor_event_idx < 0 ||
11654 vendor_event_idx >= wiphy->n_vendor_events))
11655 return NULL;
11656 info = &wiphy->vendor_events[vendor_event_idx];
11657 break;
11658 default:
11659 WARN_ON(1);
11660 return NULL;
11661 }
11662
11663 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11664 cmd, attr, info, gfp);
11665 }
11666 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11667
__cfg80211_send_event_skb(struct sk_buff * skb,gfp_t gfp)11668 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11669 {
11670 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11671 void *hdr = ((void **)skb->cb)[1];
11672 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11673 struct nlattr *data = ((void **)skb->cb)[2];
11674 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11675
11676 /* clear CB data for netlink core to own from now on */
11677 memset(skb->cb, 0, sizeof(skb->cb));
11678
11679 nla_nest_end(skb, data);
11680 genlmsg_end(skb, hdr);
11681
11682 if (nlhdr->nlmsg_pid) {
11683 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11684 nlhdr->nlmsg_pid);
11685 } else {
11686 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11687 mcgrp = NL80211_MCGRP_VENDOR;
11688
11689 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11690 skb, 0, mcgrp, gfp);
11691 }
11692 }
11693 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11694
11695 #ifdef CONFIG_NL80211_TESTMODE
nl80211_testmode_do(struct sk_buff * skb,struct genl_info * info)11696 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11697 {
11698 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11699 struct wireless_dev *wdev;
11700 int err;
11701
11702 lockdep_assert_held(&rdev->wiphy.mtx);
11703
11704 wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11705 info->attrs);
11706
11707 if (!rdev->ops->testmode_cmd)
11708 return -EOPNOTSUPP;
11709
11710 if (IS_ERR(wdev)) {
11711 err = PTR_ERR(wdev);
11712 if (err != -EINVAL)
11713 return err;
11714 wdev = NULL;
11715 } else if (wdev->wiphy != &rdev->wiphy) {
11716 return -EINVAL;
11717 }
11718
11719 if (!info->attrs[NL80211_ATTR_TESTDATA])
11720 return -EINVAL;
11721
11722 rdev->cur_cmd_info = info;
11723 err = rdev_testmode_cmd(rdev, wdev,
11724 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11725 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11726 rdev->cur_cmd_info = NULL;
11727
11728 return err;
11729 }
11730
nl80211_testmode_dump(struct sk_buff * skb,struct netlink_callback * cb)11731 static int nl80211_testmode_dump(struct sk_buff *skb,
11732 struct netlink_callback *cb)
11733 {
11734 struct cfg80211_registered_device *rdev;
11735 struct nlattr **attrbuf = NULL;
11736 int err;
11737 long phy_idx;
11738 void *data = NULL;
11739 int data_len = 0;
11740
11741 rtnl_lock();
11742
11743 if (cb->args[0]) {
11744 /*
11745 * 0 is a valid index, but not valid for args[0],
11746 * so we need to offset by 1.
11747 */
11748 phy_idx = cb->args[0] - 1;
11749
11750 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11751 if (!rdev) {
11752 err = -ENOENT;
11753 goto out_err;
11754 }
11755 } else {
11756 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11757 GFP_KERNEL);
11758 if (!attrbuf) {
11759 err = -ENOMEM;
11760 goto out_err;
11761 }
11762
11763 err = nlmsg_parse_deprecated(cb->nlh,
11764 GENL_HDRLEN + nl80211_fam.hdrsize,
11765 attrbuf, nl80211_fam.maxattr,
11766 nl80211_policy, NULL);
11767 if (err)
11768 goto out_err;
11769
11770 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11771 if (IS_ERR(rdev)) {
11772 err = PTR_ERR(rdev);
11773 goto out_err;
11774 }
11775 phy_idx = rdev->wiphy_idx;
11776
11777 if (attrbuf[NL80211_ATTR_TESTDATA])
11778 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11779 }
11780
11781 if (cb->args[1]) {
11782 data = nla_data((void *)cb->args[1]);
11783 data_len = nla_len((void *)cb->args[1]);
11784 }
11785
11786 if (!rdev->ops->testmode_dump) {
11787 err = -EOPNOTSUPP;
11788 goto out_err;
11789 }
11790
11791 while (1) {
11792 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11793 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11794 NL80211_CMD_TESTMODE);
11795 struct nlattr *tmdata;
11796
11797 if (!hdr)
11798 break;
11799
11800 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11801 genlmsg_cancel(skb, hdr);
11802 break;
11803 }
11804
11805 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11806 if (!tmdata) {
11807 genlmsg_cancel(skb, hdr);
11808 break;
11809 }
11810 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11811 nla_nest_end(skb, tmdata);
11812
11813 if (err == -ENOBUFS || err == -ENOENT) {
11814 genlmsg_cancel(skb, hdr);
11815 break;
11816 } else if (err) {
11817 genlmsg_cancel(skb, hdr);
11818 goto out_err;
11819 }
11820
11821 genlmsg_end(skb, hdr);
11822 }
11823
11824 err = skb->len;
11825 /* see above */
11826 cb->args[0] = phy_idx + 1;
11827 out_err:
11828 kfree(attrbuf);
11829 rtnl_unlock();
11830 return err;
11831 }
11832 #endif
11833
nl80211_connect(struct sk_buff * skb,struct genl_info * info)11834 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11835 {
11836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11837 struct net_device *dev = info->user_ptr[1];
11838 struct cfg80211_connect_params connect;
11839 struct wiphy *wiphy;
11840 struct cfg80211_cached_keys *connkeys = NULL;
11841 u32 freq = 0;
11842 int err;
11843
11844 memset(&connect, 0, sizeof(connect));
11845
11846 if (!info->attrs[NL80211_ATTR_SSID] ||
11847 !nla_len(info->attrs[NL80211_ATTR_SSID]))
11848 return -EINVAL;
11849
11850 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11851 connect.auth_type =
11852 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11853 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11854 NL80211_CMD_CONNECT))
11855 return -EINVAL;
11856 } else
11857 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11858
11859 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11860
11861 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11862 !wiphy_ext_feature_isset(&rdev->wiphy,
11863 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11864 return -EINVAL;
11865 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11866
11867 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11868 NL80211_MAX_NR_CIPHER_SUITES);
11869 if (err)
11870 return err;
11871
11872 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11873 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11874 return -EOPNOTSUPP;
11875
11876 wiphy = &rdev->wiphy;
11877
11878 connect.bg_scan_period = -1;
11879 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11880 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11881 connect.bg_scan_period =
11882 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11883 }
11884
11885 if (info->attrs[NL80211_ATTR_MAC])
11886 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11887 else if (info->attrs[NL80211_ATTR_MAC_HINT])
11888 connect.bssid_hint =
11889 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11890 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11891 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11892
11893 if (info->attrs[NL80211_ATTR_IE]) {
11894 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11895 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11896 }
11897
11898 if (info->attrs[NL80211_ATTR_USE_MFP]) {
11899 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11900 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11901 !wiphy_ext_feature_isset(&rdev->wiphy,
11902 NL80211_EXT_FEATURE_MFP_OPTIONAL))
11903 return -EOPNOTSUPP;
11904 } else {
11905 connect.mfp = NL80211_MFP_NO;
11906 }
11907
11908 if (info->attrs[NL80211_ATTR_PREV_BSSID])
11909 connect.prev_bssid =
11910 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11911
11912 if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11913 freq = MHZ_TO_KHZ(nla_get_u32(
11914 info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11915 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11916 freq +=
11917 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11918
11919 if (freq) {
11920 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11921 if (!connect.channel)
11922 return -EINVAL;
11923 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11924 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11925 freq = MHZ_TO_KHZ(freq);
11926 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11927 if (!connect.channel_hint)
11928 return -EINVAL;
11929 }
11930
11931 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11932 connect.edmg.channels =
11933 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11934
11935 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11936 connect.edmg.bw_config =
11937 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11938 }
11939
11940 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11941 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11942 if (IS_ERR(connkeys))
11943 return PTR_ERR(connkeys);
11944 }
11945
11946 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11947 connect.flags |= ASSOC_REQ_DISABLE_HT;
11948
11949 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11950 memcpy(&connect.ht_capa_mask,
11951 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11952 sizeof(connect.ht_capa_mask));
11953
11954 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11955 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11956 kfree_sensitive(connkeys);
11957 return -EINVAL;
11958 }
11959 memcpy(&connect.ht_capa,
11960 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11961 sizeof(connect.ht_capa));
11962 }
11963
11964 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11965 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11966
11967 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11968 connect.flags |= ASSOC_REQ_DISABLE_HE;
11969
11970 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11971 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11972
11973 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11974 memcpy(&connect.vht_capa_mask,
11975 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11976 sizeof(connect.vht_capa_mask));
11977
11978 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11979 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11980 kfree_sensitive(connkeys);
11981 return -EINVAL;
11982 }
11983 memcpy(&connect.vht_capa,
11984 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11985 sizeof(connect.vht_capa));
11986 }
11987
11988 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11989 if (!((rdev->wiphy.features &
11990 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11991 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11992 !wiphy_ext_feature_isset(&rdev->wiphy,
11993 NL80211_EXT_FEATURE_RRM)) {
11994 kfree_sensitive(connkeys);
11995 return -EINVAL;
11996 }
11997 connect.flags |= ASSOC_REQ_USE_RRM;
11998 }
11999
12000 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
12001 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
12002 kfree_sensitive(connkeys);
12003 return -EOPNOTSUPP;
12004 }
12005
12006 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
12007 /* bss selection makes no sense if bssid is set */
12008 if (connect.bssid) {
12009 kfree_sensitive(connkeys);
12010 return -EINVAL;
12011 }
12012
12013 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
12014 wiphy, &connect.bss_select);
12015 if (err) {
12016 kfree_sensitive(connkeys);
12017 return err;
12018 }
12019 }
12020
12021 if (wiphy_ext_feature_isset(&rdev->wiphy,
12022 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
12023 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12024 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12025 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12026 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12027 connect.fils_erp_username =
12028 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12029 connect.fils_erp_username_len =
12030 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12031 connect.fils_erp_realm =
12032 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12033 connect.fils_erp_realm_len =
12034 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12035 connect.fils_erp_next_seq_num =
12036 nla_get_u16(
12037 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12038 connect.fils_erp_rrk =
12039 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12040 connect.fils_erp_rrk_len =
12041 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12042 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12043 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12044 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12045 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12046 kfree_sensitive(connkeys);
12047 return -EINVAL;
12048 }
12049
12050 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
12051 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12052 kfree_sensitive(connkeys);
12053 GENL_SET_ERR_MSG(info,
12054 "external auth requires connection ownership");
12055 return -EINVAL;
12056 }
12057 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
12058 }
12059
12060 if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
12061 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
12062
12063 wdev_lock(dev->ieee80211_ptr);
12064
12065 err = cfg80211_connect(rdev, dev, &connect, connkeys,
12066 connect.prev_bssid);
12067 if (err)
12068 kfree_sensitive(connkeys);
12069
12070 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12071 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12072 if (connect.bssid)
12073 memcpy(dev->ieee80211_ptr->disconnect_bssid,
12074 connect.bssid, ETH_ALEN);
12075 else
12076 eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
12077 }
12078
12079 wdev_unlock(dev->ieee80211_ptr);
12080
12081 return err;
12082 }
12083
nl80211_update_connect_params(struct sk_buff * skb,struct genl_info * info)12084 static int nl80211_update_connect_params(struct sk_buff *skb,
12085 struct genl_info *info)
12086 {
12087 struct cfg80211_connect_params connect = {};
12088 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12089 struct net_device *dev = info->user_ptr[1];
12090 struct wireless_dev *wdev = dev->ieee80211_ptr;
12091 bool fils_sk_offload;
12092 u32 auth_type;
12093 u32 changed = 0;
12094 int ret;
12095
12096 if (!rdev->ops->update_connect_params)
12097 return -EOPNOTSUPP;
12098
12099 if (info->attrs[NL80211_ATTR_IE]) {
12100 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12101 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12102 changed |= UPDATE_ASSOC_IES;
12103 }
12104
12105 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
12106 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
12107
12108 /*
12109 * when driver supports fils-sk offload all attributes must be
12110 * provided. So the else covers "fils-sk-not-all" and
12111 * "no-fils-sk-any".
12112 */
12113 if (fils_sk_offload &&
12114 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12115 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12116 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12117 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12118 connect.fils_erp_username =
12119 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12120 connect.fils_erp_username_len =
12121 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12122 connect.fils_erp_realm =
12123 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12124 connect.fils_erp_realm_len =
12125 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12126 connect.fils_erp_next_seq_num =
12127 nla_get_u16(
12128 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12129 connect.fils_erp_rrk =
12130 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12131 connect.fils_erp_rrk_len =
12132 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12133 changed |= UPDATE_FILS_ERP_INFO;
12134 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12135 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12136 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12137 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12138 return -EINVAL;
12139 }
12140
12141 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
12142 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
12143 if (!nl80211_valid_auth_type(rdev, auth_type,
12144 NL80211_CMD_CONNECT))
12145 return -EINVAL;
12146
12147 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
12148 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
12149 return -EINVAL;
12150
12151 connect.auth_type = auth_type;
12152 changed |= UPDATE_AUTH_TYPE;
12153 }
12154
12155 wdev_lock(dev->ieee80211_ptr);
12156 if (!wdev->connected)
12157 ret = -ENOLINK;
12158 else
12159 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
12160 wdev_unlock(dev->ieee80211_ptr);
12161
12162 return ret;
12163 }
12164
nl80211_disconnect(struct sk_buff * skb,struct genl_info * info)12165 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
12166 {
12167 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12168 struct net_device *dev = info->user_ptr[1];
12169 u16 reason;
12170 int ret;
12171
12172 if (dev->ieee80211_ptr->conn_owner_nlportid &&
12173 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
12174 return -EPERM;
12175
12176 if (!info->attrs[NL80211_ATTR_REASON_CODE])
12177 reason = WLAN_REASON_DEAUTH_LEAVING;
12178 else
12179 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
12180
12181 if (reason == 0)
12182 return -EINVAL;
12183
12184 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12185 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12186 return -EOPNOTSUPP;
12187
12188 wdev_lock(dev->ieee80211_ptr);
12189 ret = cfg80211_disconnect(rdev, dev, reason, true);
12190 wdev_unlock(dev->ieee80211_ptr);
12191 return ret;
12192 }
12193
nl80211_wiphy_netns(struct sk_buff * skb,struct genl_info * info)12194 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
12195 {
12196 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12197 struct net *net;
12198 int err;
12199
12200 if (info->attrs[NL80211_ATTR_PID]) {
12201 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
12202
12203 net = get_net_ns_by_pid(pid);
12204 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
12205 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
12206
12207 net = get_net_ns_by_fd(fd);
12208 } else {
12209 return -EINVAL;
12210 }
12211
12212 if (IS_ERR(net))
12213 return PTR_ERR(net);
12214
12215 err = 0;
12216
12217 /* check if anything to do */
12218 if (!net_eq(wiphy_net(&rdev->wiphy), net))
12219 err = cfg80211_switch_netns(rdev, net);
12220
12221 put_net(net);
12222 return err;
12223 }
12224
nl80211_setdel_pmksa(struct sk_buff * skb,struct genl_info * info)12225 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
12226 {
12227 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12228 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
12229 struct cfg80211_pmksa *pmksa) = NULL;
12230 struct net_device *dev = info->user_ptr[1];
12231 struct cfg80211_pmksa pmksa;
12232
12233 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12234
12235 if (!info->attrs[NL80211_ATTR_PMKID])
12236 return -EINVAL;
12237
12238 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12239
12240 if (info->attrs[NL80211_ATTR_MAC]) {
12241 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12242 } else if (info->attrs[NL80211_ATTR_SSID] &&
12243 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12244 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
12245 info->attrs[NL80211_ATTR_PMK])) {
12246 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12247 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12248 pmksa.cache_id =
12249 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12250 } else {
12251 return -EINVAL;
12252 }
12253 if (info->attrs[NL80211_ATTR_PMK]) {
12254 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12255 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12256 }
12257
12258 if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
12259 pmksa.pmk_lifetime =
12260 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
12261
12262 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
12263 pmksa.pmk_reauth_threshold =
12264 nla_get_u8(
12265 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
12266
12267 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12268 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12269 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
12270 wiphy_ext_feature_isset(&rdev->wiphy,
12271 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12272 return -EOPNOTSUPP;
12273
12274 switch (info->genlhdr->cmd) {
12275 case NL80211_CMD_SET_PMKSA:
12276 rdev_ops = rdev->ops->set_pmksa;
12277 break;
12278 case NL80211_CMD_DEL_PMKSA:
12279 rdev_ops = rdev->ops->del_pmksa;
12280 break;
12281 default:
12282 WARN_ON(1);
12283 break;
12284 }
12285
12286 if (!rdev_ops)
12287 return -EOPNOTSUPP;
12288
12289 return rdev_ops(&rdev->wiphy, dev, &pmksa);
12290 }
12291
nl80211_flush_pmksa(struct sk_buff * skb,struct genl_info * info)12292 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12293 {
12294 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12295 struct net_device *dev = info->user_ptr[1];
12296
12297 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12298 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12299 return -EOPNOTSUPP;
12300
12301 if (!rdev->ops->flush_pmksa)
12302 return -EOPNOTSUPP;
12303
12304 return rdev_flush_pmksa(rdev, dev);
12305 }
12306
nl80211_tdls_mgmt(struct sk_buff * skb,struct genl_info * info)12307 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12308 {
12309 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12310 struct net_device *dev = info->user_ptr[1];
12311 u8 action_code, dialog_token;
12312 u32 peer_capability = 0;
12313 u16 status_code;
12314 u8 *peer;
12315 int link_id;
12316 bool initiator;
12317
12318 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12319 !rdev->ops->tdls_mgmt)
12320 return -EOPNOTSUPP;
12321
12322 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12323 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12324 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12325 !info->attrs[NL80211_ATTR_IE] ||
12326 !info->attrs[NL80211_ATTR_MAC])
12327 return -EINVAL;
12328
12329 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12330 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12331 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12332 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12333 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12334 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12335 peer_capability =
12336 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12337 link_id = nl80211_link_id_or_invalid(info->attrs);
12338
12339 return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code,
12340 dialog_token, status_code, peer_capability,
12341 initiator,
12342 nla_data(info->attrs[NL80211_ATTR_IE]),
12343 nla_len(info->attrs[NL80211_ATTR_IE]));
12344 }
12345
nl80211_tdls_oper(struct sk_buff * skb,struct genl_info * info)12346 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12347 {
12348 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12349 struct net_device *dev = info->user_ptr[1];
12350 enum nl80211_tdls_operation operation;
12351 u8 *peer;
12352
12353 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12354 !rdev->ops->tdls_oper)
12355 return -EOPNOTSUPP;
12356
12357 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12358 !info->attrs[NL80211_ATTR_MAC])
12359 return -EINVAL;
12360
12361 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12362 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12363
12364 return rdev_tdls_oper(rdev, dev, peer, operation);
12365 }
12366
nl80211_remain_on_channel(struct sk_buff * skb,struct genl_info * info)12367 static int nl80211_remain_on_channel(struct sk_buff *skb,
12368 struct genl_info *info)
12369 {
12370 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12371 unsigned int link_id = nl80211_link_id(info->attrs);
12372 struct wireless_dev *wdev = info->user_ptr[1];
12373 struct cfg80211_chan_def chandef;
12374 struct sk_buff *msg;
12375 void *hdr;
12376 u64 cookie;
12377 u32 duration;
12378 int err;
12379
12380 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12381 !info->attrs[NL80211_ATTR_DURATION])
12382 return -EINVAL;
12383
12384 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12385
12386 if (!rdev->ops->remain_on_channel ||
12387 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12388 return -EOPNOTSUPP;
12389
12390 /*
12391 * We should be on that channel for at least a minimum amount of
12392 * time (10ms) but no longer than the driver supports.
12393 */
12394 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12395 duration > rdev->wiphy.max_remain_on_channel_duration)
12396 return -EINVAL;
12397
12398 err = nl80211_parse_chandef(rdev, info, &chandef);
12399 if (err)
12400 return err;
12401
12402 wdev_lock(wdev);
12403 if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12404 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12405
12406 oper_chandef = wdev_chandef(wdev, link_id);
12407
12408 if (WARN_ON(!oper_chandef)) {
12409 /* cannot happen since we must beacon to get here */
12410 WARN_ON(1);
12411 wdev_unlock(wdev);
12412 return -EBUSY;
12413 }
12414
12415 /* note: returns first one if identical chandefs */
12416 compat_chandef = cfg80211_chandef_compatible(&chandef,
12417 oper_chandef);
12418
12419 if (compat_chandef != &chandef) {
12420 wdev_unlock(wdev);
12421 return -EBUSY;
12422 }
12423 }
12424 wdev_unlock(wdev);
12425
12426 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12427 if (!msg)
12428 return -ENOMEM;
12429
12430 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12431 NL80211_CMD_REMAIN_ON_CHANNEL);
12432 if (!hdr) {
12433 err = -ENOBUFS;
12434 goto free_msg;
12435 }
12436
12437 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12438 duration, &cookie);
12439
12440 if (err)
12441 goto free_msg;
12442
12443 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12444 NL80211_ATTR_PAD))
12445 goto nla_put_failure;
12446
12447 genlmsg_end(msg, hdr);
12448
12449 return genlmsg_reply(msg, info);
12450
12451 nla_put_failure:
12452 err = -ENOBUFS;
12453 free_msg:
12454 nlmsg_free(msg);
12455 return err;
12456 }
12457
nl80211_cancel_remain_on_channel(struct sk_buff * skb,struct genl_info * info)12458 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12459 struct genl_info *info)
12460 {
12461 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12462 struct wireless_dev *wdev = info->user_ptr[1];
12463 u64 cookie;
12464
12465 if (!info->attrs[NL80211_ATTR_COOKIE])
12466 return -EINVAL;
12467
12468 if (!rdev->ops->cancel_remain_on_channel)
12469 return -EOPNOTSUPP;
12470
12471 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12472
12473 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12474 }
12475
nl80211_set_tx_bitrate_mask(struct sk_buff * skb,struct genl_info * info)12476 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12477 struct genl_info *info)
12478 {
12479 struct cfg80211_bitrate_mask mask;
12480 unsigned int link_id = nl80211_link_id(info->attrs);
12481 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12482 struct net_device *dev = info->user_ptr[1];
12483 struct wireless_dev *wdev = dev->ieee80211_ptr;
12484 int err;
12485
12486 if (!rdev->ops->set_bitrate_mask)
12487 return -EOPNOTSUPP;
12488
12489 wdev_lock(wdev);
12490 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12491 NL80211_ATTR_TX_RATES, &mask,
12492 dev, true, link_id);
12493 if (err)
12494 goto out;
12495
12496 err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12497 out:
12498 wdev_unlock(wdev);
12499 return err;
12500 }
12501
nl80211_register_mgmt(struct sk_buff * skb,struct genl_info * info)12502 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12503 {
12504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12505 struct wireless_dev *wdev = info->user_ptr[1];
12506 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12507
12508 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12509 return -EINVAL;
12510
12511 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12512 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12513
12514 switch (wdev->iftype) {
12515 case NL80211_IFTYPE_STATION:
12516 case NL80211_IFTYPE_ADHOC:
12517 case NL80211_IFTYPE_P2P_CLIENT:
12518 case NL80211_IFTYPE_AP:
12519 case NL80211_IFTYPE_AP_VLAN:
12520 case NL80211_IFTYPE_MESH_POINT:
12521 case NL80211_IFTYPE_P2P_GO:
12522 case NL80211_IFTYPE_P2P_DEVICE:
12523 break;
12524 case NL80211_IFTYPE_NAN:
12525 if (!wiphy_ext_feature_isset(wdev->wiphy,
12526 NL80211_EXT_FEATURE_SECURE_NAN))
12527 return -EOPNOTSUPP;
12528 break;
12529 default:
12530 return -EOPNOTSUPP;
12531 }
12532
12533 /* not much point in registering if we can't reply */
12534 if (!rdev->ops->mgmt_tx)
12535 return -EOPNOTSUPP;
12536
12537 if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12538 !wiphy_ext_feature_isset(&rdev->wiphy,
12539 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12540 GENL_SET_ERR_MSG(info,
12541 "multicast RX registrations are not supported");
12542 return -EOPNOTSUPP;
12543 }
12544
12545 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12546 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12547 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12548 info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12549 info->extack);
12550 }
12551
nl80211_tx_mgmt(struct sk_buff * skb,struct genl_info * info)12552 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12553 {
12554 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12555 struct wireless_dev *wdev = info->user_ptr[1];
12556 struct cfg80211_chan_def chandef;
12557 int err;
12558 void *hdr = NULL;
12559 u64 cookie;
12560 struct sk_buff *msg = NULL;
12561 struct cfg80211_mgmt_tx_params params = {
12562 .dont_wait_for_ack =
12563 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12564 };
12565
12566 if (!info->attrs[NL80211_ATTR_FRAME])
12567 return -EINVAL;
12568
12569 if (!rdev->ops->mgmt_tx)
12570 return -EOPNOTSUPP;
12571
12572 switch (wdev->iftype) {
12573 case NL80211_IFTYPE_P2P_DEVICE:
12574 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12575 return -EINVAL;
12576 break;
12577 case NL80211_IFTYPE_STATION:
12578 case NL80211_IFTYPE_ADHOC:
12579 case NL80211_IFTYPE_P2P_CLIENT:
12580 case NL80211_IFTYPE_AP:
12581 case NL80211_IFTYPE_AP_VLAN:
12582 case NL80211_IFTYPE_MESH_POINT:
12583 case NL80211_IFTYPE_P2P_GO:
12584 break;
12585 case NL80211_IFTYPE_NAN:
12586 if (!wiphy_ext_feature_isset(wdev->wiphy,
12587 NL80211_EXT_FEATURE_SECURE_NAN))
12588 return -EOPNOTSUPP;
12589 break;
12590 default:
12591 return -EOPNOTSUPP;
12592 }
12593
12594 if (info->attrs[NL80211_ATTR_DURATION]) {
12595 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12596 return -EINVAL;
12597 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12598
12599 /*
12600 * We should wait on the channel for at least a minimum amount
12601 * of time (10ms) but no longer than the driver supports.
12602 */
12603 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12604 params.wait > rdev->wiphy.max_remain_on_channel_duration)
12605 return -EINVAL;
12606 }
12607
12608 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12609
12610 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12611 return -EINVAL;
12612
12613 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12614
12615 /* get the channel if any has been specified, otherwise pass NULL to
12616 * the driver. The latter will use the current one
12617 */
12618 chandef.chan = NULL;
12619 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12620 err = nl80211_parse_chandef(rdev, info, &chandef);
12621 if (err)
12622 return err;
12623 }
12624
12625 if (!chandef.chan && params.offchan)
12626 return -EINVAL;
12627
12628 wdev_lock(wdev);
12629 if (params.offchan &&
12630 !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12631 wdev_unlock(wdev);
12632 return -EBUSY;
12633 }
12634
12635 params.link_id = nl80211_link_id_or_invalid(info->attrs);
12636 /*
12637 * This now races due to the unlock, but we cannot check
12638 * the valid links for the _station_ anyway, so that's up
12639 * to the driver.
12640 */
12641 if (params.link_id >= 0 &&
12642 !(wdev->valid_links & BIT(params.link_id))) {
12643 wdev_unlock(wdev);
12644 return -EINVAL;
12645 }
12646 wdev_unlock(wdev);
12647
12648 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12649 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12650
12651 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12652 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12653 int i;
12654
12655 if (len % sizeof(u16))
12656 return -EINVAL;
12657
12658 params.n_csa_offsets = len / sizeof(u16);
12659 params.csa_offsets =
12660 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12661
12662 /* check that all the offsets fit the frame */
12663 for (i = 0; i < params.n_csa_offsets; i++) {
12664 if (params.csa_offsets[i] >= params.len)
12665 return -EINVAL;
12666 }
12667 }
12668
12669 if (!params.dont_wait_for_ack) {
12670 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12671 if (!msg)
12672 return -ENOMEM;
12673
12674 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12675 NL80211_CMD_FRAME);
12676 if (!hdr) {
12677 err = -ENOBUFS;
12678 goto free_msg;
12679 }
12680 }
12681
12682 params.chan = chandef.chan;
12683 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie);
12684 if (err)
12685 goto free_msg;
12686
12687 if (msg) {
12688 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12689 NL80211_ATTR_PAD))
12690 goto nla_put_failure;
12691
12692 genlmsg_end(msg, hdr);
12693 return genlmsg_reply(msg, info);
12694 }
12695
12696 return 0;
12697
12698 nla_put_failure:
12699 err = -ENOBUFS;
12700 free_msg:
12701 nlmsg_free(msg);
12702 return err;
12703 }
12704
nl80211_tx_mgmt_cancel_wait(struct sk_buff * skb,struct genl_info * info)12705 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12706 {
12707 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12708 struct wireless_dev *wdev = info->user_ptr[1];
12709 u64 cookie;
12710
12711 if (!info->attrs[NL80211_ATTR_COOKIE])
12712 return -EINVAL;
12713
12714 if (!rdev->ops->mgmt_tx_cancel_wait)
12715 return -EOPNOTSUPP;
12716
12717 switch (wdev->iftype) {
12718 case NL80211_IFTYPE_STATION:
12719 case NL80211_IFTYPE_ADHOC:
12720 case NL80211_IFTYPE_P2P_CLIENT:
12721 case NL80211_IFTYPE_AP:
12722 case NL80211_IFTYPE_AP_VLAN:
12723 case NL80211_IFTYPE_P2P_GO:
12724 case NL80211_IFTYPE_P2P_DEVICE:
12725 break;
12726 case NL80211_IFTYPE_NAN:
12727 if (!wiphy_ext_feature_isset(wdev->wiphy,
12728 NL80211_EXT_FEATURE_SECURE_NAN))
12729 return -EOPNOTSUPP;
12730 break;
12731 default:
12732 return -EOPNOTSUPP;
12733 }
12734
12735 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12736
12737 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12738 }
12739
nl80211_set_power_save(struct sk_buff * skb,struct genl_info * info)12740 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12741 {
12742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12743 struct wireless_dev *wdev;
12744 struct net_device *dev = info->user_ptr[1];
12745 u8 ps_state;
12746 bool state;
12747 int err;
12748
12749 if (!info->attrs[NL80211_ATTR_PS_STATE])
12750 return -EINVAL;
12751
12752 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12753
12754 wdev = dev->ieee80211_ptr;
12755
12756 if (!rdev->ops->set_power_mgmt)
12757 return -EOPNOTSUPP;
12758
12759 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12760
12761 if (state == wdev->ps)
12762 return 0;
12763
12764 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12765 if (!err)
12766 wdev->ps = state;
12767 return err;
12768 }
12769
nl80211_get_power_save(struct sk_buff * skb,struct genl_info * info)12770 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12771 {
12772 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12773 enum nl80211_ps_state ps_state;
12774 struct wireless_dev *wdev;
12775 struct net_device *dev = info->user_ptr[1];
12776 struct sk_buff *msg;
12777 void *hdr;
12778 int err;
12779
12780 wdev = dev->ieee80211_ptr;
12781
12782 if (!rdev->ops->set_power_mgmt)
12783 return -EOPNOTSUPP;
12784
12785 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12786 if (!msg)
12787 return -ENOMEM;
12788
12789 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12790 NL80211_CMD_GET_POWER_SAVE);
12791 if (!hdr) {
12792 err = -ENOBUFS;
12793 goto free_msg;
12794 }
12795
12796 if (wdev->ps)
12797 ps_state = NL80211_PS_ENABLED;
12798 else
12799 ps_state = NL80211_PS_DISABLED;
12800
12801 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12802 goto nla_put_failure;
12803
12804 genlmsg_end(msg, hdr);
12805 return genlmsg_reply(msg, info);
12806
12807 nla_put_failure:
12808 err = -ENOBUFS;
12809 free_msg:
12810 nlmsg_free(msg);
12811 return err;
12812 }
12813
12814 static const struct nla_policy
12815 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12816 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12817 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12818 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12819 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12820 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12821 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12822 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12823 };
12824
nl80211_set_cqm_txe(struct genl_info * info,u32 rate,u32 pkts,u32 intvl)12825 static int nl80211_set_cqm_txe(struct genl_info *info,
12826 u32 rate, u32 pkts, u32 intvl)
12827 {
12828 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12829 struct net_device *dev = info->user_ptr[1];
12830 struct wireless_dev *wdev = dev->ieee80211_ptr;
12831
12832 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12833 return -EINVAL;
12834
12835 if (!rdev->ops->set_cqm_txe_config)
12836 return -EOPNOTSUPP;
12837
12838 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12839 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12840 return -EOPNOTSUPP;
12841
12842 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12843 }
12844
cfg80211_cqm_rssi_update(struct cfg80211_registered_device * rdev,struct net_device * dev,struct cfg80211_cqm_config * cqm_config)12845 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12846 struct net_device *dev,
12847 struct cfg80211_cqm_config *cqm_config)
12848 {
12849 struct wireless_dev *wdev = dev->ieee80211_ptr;
12850 s32 last, low, high;
12851 u32 hyst;
12852 int i, n, low_index;
12853 int err;
12854
12855 /*
12856 * Obtain current RSSI value if possible, if not and no RSSI threshold
12857 * event has been received yet, we should receive an event after a
12858 * connection is established and enough beacons received to calculate
12859 * the average.
12860 */
12861 if (!cqm_config->last_rssi_event_value &&
12862 wdev->links[0].client.current_bss &&
12863 rdev->ops->get_station) {
12864 struct station_info sinfo = {};
12865 u8 *mac_addr;
12866
12867 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12868
12869 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12870 if (err)
12871 return err;
12872
12873 cfg80211_sinfo_release_content(&sinfo);
12874 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12875 cqm_config->last_rssi_event_value =
12876 (s8) sinfo.rx_beacon_signal_avg;
12877 }
12878
12879 last = cqm_config->last_rssi_event_value;
12880 hyst = cqm_config->rssi_hyst;
12881 n = cqm_config->n_rssi_thresholds;
12882
12883 for (i = 0; i < n; i++) {
12884 i = array_index_nospec(i, n);
12885 if (last < cqm_config->rssi_thresholds[i])
12886 break;
12887 }
12888
12889 low_index = i - 1;
12890 if (low_index >= 0) {
12891 low_index = array_index_nospec(low_index, n);
12892 low = cqm_config->rssi_thresholds[low_index] - hyst;
12893 } else {
12894 low = S32_MIN;
12895 }
12896 if (i < n) {
12897 i = array_index_nospec(i, n);
12898 high = cqm_config->rssi_thresholds[i] + hyst - 1;
12899 } else {
12900 high = S32_MAX;
12901 }
12902
12903 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12904 }
12905
nl80211_set_cqm_rssi(struct genl_info * info,const s32 * thresholds,int n_thresholds,u32 hysteresis)12906 static int nl80211_set_cqm_rssi(struct genl_info *info,
12907 const s32 *thresholds, int n_thresholds,
12908 u32 hysteresis)
12909 {
12910 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12911 struct cfg80211_cqm_config *cqm_config = NULL, *old;
12912 struct net_device *dev = info->user_ptr[1];
12913 struct wireless_dev *wdev = dev->ieee80211_ptr;
12914 int i, err;
12915 s32 prev = S32_MIN;
12916
12917 /* Check all values negative and sorted */
12918 for (i = 0; i < n_thresholds; i++) {
12919 if (thresholds[i] > 0 || thresholds[i] <= prev)
12920 return -EINVAL;
12921
12922 prev = thresholds[i];
12923 }
12924
12925 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12926 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12927 return -EOPNOTSUPP;
12928
12929 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12930 n_thresholds = 0;
12931
12932 wdev_lock(wdev);
12933 old = rcu_dereference_protected(wdev->cqm_config,
12934 lockdep_is_held(&wdev->mtx));
12935
12936 /* if already disabled just succeed */
12937 if (!n_thresholds && !old) {
12938 err = 0;
12939 goto unlock;
12940 }
12941
12942 if (n_thresholds > 1) {
12943 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12944 NL80211_EXT_FEATURE_CQM_RSSI_LIST) ||
12945 !rdev->ops->set_cqm_rssi_range_config) {
12946 err = -EOPNOTSUPP;
12947 goto unlock;
12948 }
12949 } else {
12950 if (!rdev->ops->set_cqm_rssi_config) {
12951 err = -EOPNOTSUPP;
12952 goto unlock;
12953 }
12954 }
12955
12956 if (n_thresholds) {
12957 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12958 n_thresholds),
12959 GFP_KERNEL);
12960 if (!cqm_config) {
12961 err = -ENOMEM;
12962 goto unlock;
12963 }
12964
12965 cqm_config->rssi_hyst = hysteresis;
12966 cqm_config->n_rssi_thresholds = n_thresholds;
12967 memcpy(cqm_config->rssi_thresholds, thresholds,
12968 flex_array_size(cqm_config, rssi_thresholds,
12969 n_thresholds));
12970 cqm_config->use_range_api = n_thresholds > 1 ||
12971 !rdev->ops->set_cqm_rssi_config;
12972
12973 rcu_assign_pointer(wdev->cqm_config, cqm_config);
12974
12975 if (cqm_config->use_range_api)
12976 err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config);
12977 else
12978 err = rdev_set_cqm_rssi_config(rdev, dev,
12979 thresholds[0],
12980 hysteresis);
12981 } else {
12982 RCU_INIT_POINTER(wdev->cqm_config, NULL);
12983 /* if enabled as range also disable via range */
12984 if (old->use_range_api)
12985 err = rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12986 else
12987 err = rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12988 }
12989
12990 if (err) {
12991 rcu_assign_pointer(wdev->cqm_config, old);
12992 kfree_rcu(cqm_config, rcu_head);
12993 } else {
12994 kfree_rcu(old, rcu_head);
12995 }
12996 unlock:
12997 wdev_unlock(wdev);
12998
12999 return err;
13000 }
13001
nl80211_set_cqm(struct sk_buff * skb,struct genl_info * info)13002 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
13003 {
13004 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
13005 struct nlattr *cqm;
13006 int err;
13007
13008 cqm = info->attrs[NL80211_ATTR_CQM];
13009 if (!cqm)
13010 return -EINVAL;
13011
13012 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
13013 nl80211_attr_cqm_policy,
13014 info->extack);
13015 if (err)
13016 return err;
13017
13018 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
13019 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
13020 const s32 *thresholds =
13021 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
13022 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
13023 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
13024
13025 if (len % 4)
13026 return -EINVAL;
13027
13028 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
13029 hysteresis);
13030 }
13031
13032 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
13033 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
13034 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
13035 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
13036 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
13037 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
13038
13039 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
13040 }
13041
13042 return -EINVAL;
13043 }
13044
nl80211_join_ocb(struct sk_buff * skb,struct genl_info * info)13045 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
13046 {
13047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13048 struct net_device *dev = info->user_ptr[1];
13049 struct ocb_setup setup = {};
13050 int err;
13051
13052 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13053 if (err)
13054 return err;
13055
13056 return cfg80211_join_ocb(rdev, dev, &setup);
13057 }
13058
nl80211_leave_ocb(struct sk_buff * skb,struct genl_info * info)13059 static int nl80211_leave_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
13064 return cfg80211_leave_ocb(rdev, dev);
13065 }
13066
nl80211_join_mesh(struct sk_buff * skb,struct genl_info * info)13067 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
13068 {
13069 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13070 struct net_device *dev = info->user_ptr[1];
13071 struct mesh_config cfg;
13072 struct mesh_setup setup;
13073 int err;
13074
13075 /* start with default */
13076 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
13077 memcpy(&setup, &default_mesh_setup, sizeof(setup));
13078
13079 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
13080 /* and parse parameters if given */
13081 err = nl80211_parse_mesh_config(info, &cfg, NULL);
13082 if (err)
13083 return err;
13084 }
13085
13086 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
13087 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
13088 return -EINVAL;
13089
13090 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
13091 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
13092
13093 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
13094 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
13095 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
13096 return -EINVAL;
13097
13098 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
13099 setup.beacon_interval =
13100 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
13101
13102 err = cfg80211_validate_beacon_int(rdev,
13103 NL80211_IFTYPE_MESH_POINT,
13104 setup.beacon_interval);
13105 if (err)
13106 return err;
13107 }
13108
13109 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
13110 setup.dtim_period =
13111 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
13112 if (setup.dtim_period < 1 || setup.dtim_period > 100)
13113 return -EINVAL;
13114 }
13115
13116 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
13117 /* parse additional setup parameters if given */
13118 err = nl80211_parse_mesh_setup(info, &setup);
13119 if (err)
13120 return err;
13121 }
13122
13123 if (setup.user_mpm)
13124 cfg.auto_open_plinks = false;
13125
13126 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
13127 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13128 if (err)
13129 return err;
13130 } else {
13131 /* __cfg80211_join_mesh() will sort it out */
13132 setup.chandef.chan = NULL;
13133 }
13134
13135 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
13136 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13137 int n_rates =
13138 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13139 struct ieee80211_supported_band *sband;
13140
13141 if (!setup.chandef.chan)
13142 return -EINVAL;
13143
13144 sband = rdev->wiphy.bands[setup.chandef.chan->band];
13145
13146 err = ieee80211_get_ratemask(sband, rates, n_rates,
13147 &setup.basic_rates);
13148 if (err)
13149 return err;
13150 }
13151
13152 if (info->attrs[NL80211_ATTR_TX_RATES]) {
13153 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
13154 NL80211_ATTR_TX_RATES,
13155 &setup.beacon_rate,
13156 dev, false, 0);
13157 if (err)
13158 return err;
13159
13160 if (!setup.chandef.chan)
13161 return -EINVAL;
13162
13163 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
13164 &setup.beacon_rate);
13165 if (err)
13166 return err;
13167 }
13168
13169 setup.userspace_handles_dfs =
13170 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
13171
13172 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
13173 int r = validate_pae_over_nl80211(rdev, info);
13174
13175 if (r < 0)
13176 return r;
13177
13178 setup.control_port_over_nl80211 = true;
13179 }
13180
13181 wdev_lock(dev->ieee80211_ptr);
13182 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
13183 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
13184 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
13185 wdev_unlock(dev->ieee80211_ptr);
13186
13187 return err;
13188 }
13189
nl80211_leave_mesh(struct sk_buff * skb,struct genl_info * info)13190 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
13191 {
13192 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13193 struct net_device *dev = info->user_ptr[1];
13194
13195 return cfg80211_leave_mesh(rdev, dev);
13196 }
13197
13198 #ifdef CONFIG_PM
nl80211_send_wowlan_patterns(struct sk_buff * msg,struct cfg80211_registered_device * rdev)13199 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
13200 struct cfg80211_registered_device *rdev)
13201 {
13202 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
13203 struct nlattr *nl_pats, *nl_pat;
13204 int i, pat_len;
13205
13206 if (!wowlan->n_patterns)
13207 return 0;
13208
13209 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
13210 if (!nl_pats)
13211 return -ENOBUFS;
13212
13213 for (i = 0; i < wowlan->n_patterns; i++) {
13214 nl_pat = nla_nest_start_noflag(msg, i + 1);
13215 if (!nl_pat)
13216 return -ENOBUFS;
13217 pat_len = wowlan->patterns[i].pattern_len;
13218 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
13219 wowlan->patterns[i].mask) ||
13220 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13221 wowlan->patterns[i].pattern) ||
13222 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13223 wowlan->patterns[i].pkt_offset))
13224 return -ENOBUFS;
13225 nla_nest_end(msg, nl_pat);
13226 }
13227 nla_nest_end(msg, nl_pats);
13228
13229 return 0;
13230 }
13231
nl80211_send_wowlan_tcp(struct sk_buff * msg,struct cfg80211_wowlan_tcp * tcp)13232 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
13233 struct cfg80211_wowlan_tcp *tcp)
13234 {
13235 struct nlattr *nl_tcp;
13236
13237 if (!tcp)
13238 return 0;
13239
13240 nl_tcp = nla_nest_start_noflag(msg,
13241 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
13242 if (!nl_tcp)
13243 return -ENOBUFS;
13244
13245 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
13246 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
13247 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
13248 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
13249 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
13250 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
13251 tcp->payload_len, tcp->payload) ||
13252 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
13253 tcp->data_interval) ||
13254 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
13255 tcp->wake_len, tcp->wake_data) ||
13256 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
13257 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
13258 return -ENOBUFS;
13259
13260 if (tcp->payload_seq.len &&
13261 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
13262 sizeof(tcp->payload_seq), &tcp->payload_seq))
13263 return -ENOBUFS;
13264
13265 if (tcp->payload_tok.len &&
13266 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
13267 sizeof(tcp->payload_tok) + tcp->tokens_size,
13268 &tcp->payload_tok))
13269 return -ENOBUFS;
13270
13271 nla_nest_end(msg, nl_tcp);
13272
13273 return 0;
13274 }
13275
nl80211_send_wowlan_nd(struct sk_buff * msg,struct cfg80211_sched_scan_request * req)13276 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
13277 struct cfg80211_sched_scan_request *req)
13278 {
13279 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
13280 int i;
13281
13282 if (!req)
13283 return 0;
13284
13285 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
13286 if (!nd)
13287 return -ENOBUFS;
13288
13289 if (req->n_scan_plans == 1 &&
13290 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
13291 req->scan_plans[0].interval * 1000))
13292 return -ENOBUFS;
13293
13294 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
13295 return -ENOBUFS;
13296
13297 if (req->relative_rssi_set) {
13298 struct nl80211_bss_select_rssi_adjust rssi_adjust;
13299
13300 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
13301 req->relative_rssi))
13302 return -ENOBUFS;
13303
13304 rssi_adjust.band = req->rssi_adjust.band;
13305 rssi_adjust.delta = req->rssi_adjust.delta;
13306 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13307 sizeof(rssi_adjust), &rssi_adjust))
13308 return -ENOBUFS;
13309 }
13310
13311 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13312 if (!freqs)
13313 return -ENOBUFS;
13314
13315 for (i = 0; i < req->n_channels; i++) {
13316 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13317 return -ENOBUFS;
13318 }
13319
13320 nla_nest_end(msg, freqs);
13321
13322 if (req->n_match_sets) {
13323 matches = nla_nest_start_noflag(msg,
13324 NL80211_ATTR_SCHED_SCAN_MATCH);
13325 if (!matches)
13326 return -ENOBUFS;
13327
13328 for (i = 0; i < req->n_match_sets; i++) {
13329 match = nla_nest_start_noflag(msg, i);
13330 if (!match)
13331 return -ENOBUFS;
13332
13333 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13334 req->match_sets[i].ssid.ssid_len,
13335 req->match_sets[i].ssid.ssid))
13336 return -ENOBUFS;
13337 nla_nest_end(msg, match);
13338 }
13339 nla_nest_end(msg, matches);
13340 }
13341
13342 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13343 if (!scan_plans)
13344 return -ENOBUFS;
13345
13346 for (i = 0; i < req->n_scan_plans; i++) {
13347 scan_plan = nla_nest_start_noflag(msg, i + 1);
13348 if (!scan_plan)
13349 return -ENOBUFS;
13350
13351 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13352 req->scan_plans[i].interval) ||
13353 (req->scan_plans[i].iterations &&
13354 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13355 req->scan_plans[i].iterations)))
13356 return -ENOBUFS;
13357 nla_nest_end(msg, scan_plan);
13358 }
13359 nla_nest_end(msg, scan_plans);
13360
13361 nla_nest_end(msg, nd);
13362
13363 return 0;
13364 }
13365
nl80211_get_wowlan(struct sk_buff * skb,struct genl_info * info)13366 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13367 {
13368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13369 struct sk_buff *msg;
13370 void *hdr;
13371 u32 size = NLMSG_DEFAULT_SIZE;
13372
13373 if (!rdev->wiphy.wowlan)
13374 return -EOPNOTSUPP;
13375
13376 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13377 /* adjust size to have room for all the data */
13378 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13379 rdev->wiphy.wowlan_config->tcp->payload_len +
13380 rdev->wiphy.wowlan_config->tcp->wake_len +
13381 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13382 }
13383
13384 msg = nlmsg_new(size, GFP_KERNEL);
13385 if (!msg)
13386 return -ENOMEM;
13387
13388 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13389 NL80211_CMD_GET_WOWLAN);
13390 if (!hdr)
13391 goto nla_put_failure;
13392
13393 if (rdev->wiphy.wowlan_config) {
13394 struct nlattr *nl_wowlan;
13395
13396 nl_wowlan = nla_nest_start_noflag(msg,
13397 NL80211_ATTR_WOWLAN_TRIGGERS);
13398 if (!nl_wowlan)
13399 goto nla_put_failure;
13400
13401 if ((rdev->wiphy.wowlan_config->any &&
13402 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13403 (rdev->wiphy.wowlan_config->disconnect &&
13404 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13405 (rdev->wiphy.wowlan_config->magic_pkt &&
13406 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13407 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13408 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13409 (rdev->wiphy.wowlan_config->eap_identity_req &&
13410 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13411 (rdev->wiphy.wowlan_config->four_way_handshake &&
13412 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13413 (rdev->wiphy.wowlan_config->rfkill_release &&
13414 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13415 goto nla_put_failure;
13416
13417 if (nl80211_send_wowlan_patterns(msg, rdev))
13418 goto nla_put_failure;
13419
13420 if (nl80211_send_wowlan_tcp(msg,
13421 rdev->wiphy.wowlan_config->tcp))
13422 goto nla_put_failure;
13423
13424 if (nl80211_send_wowlan_nd(
13425 msg,
13426 rdev->wiphy.wowlan_config->nd_config))
13427 goto nla_put_failure;
13428
13429 nla_nest_end(msg, nl_wowlan);
13430 }
13431
13432 genlmsg_end(msg, hdr);
13433 return genlmsg_reply(msg, info);
13434
13435 nla_put_failure:
13436 nlmsg_free(msg);
13437 return -ENOBUFS;
13438 }
13439
nl80211_parse_wowlan_tcp(struct cfg80211_registered_device * rdev,struct nlattr * attr,struct cfg80211_wowlan * trig)13440 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13441 struct nlattr *attr,
13442 struct cfg80211_wowlan *trig)
13443 {
13444 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13445 struct cfg80211_wowlan_tcp *cfg;
13446 struct nl80211_wowlan_tcp_data_token *tok = NULL;
13447 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13448 u32 size;
13449 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13450 int err, port;
13451
13452 if (!rdev->wiphy.wowlan->tcp)
13453 return -EINVAL;
13454
13455 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13456 nl80211_wowlan_tcp_policy, NULL);
13457 if (err)
13458 return err;
13459
13460 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13461 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13462 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13463 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13464 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13465 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13466 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13467 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13468 return -EINVAL;
13469
13470 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13471 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13472 return -EINVAL;
13473
13474 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13475 rdev->wiphy.wowlan->tcp->data_interval_max ||
13476 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13477 return -EINVAL;
13478
13479 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13480 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13481 return -EINVAL;
13482
13483 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13484 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13485 return -EINVAL;
13486
13487 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13488 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13489
13490 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13491 tokens_size = tokln - sizeof(*tok);
13492
13493 if (!tok->len || tokens_size % tok->len)
13494 return -EINVAL;
13495 if (!rdev->wiphy.wowlan->tcp->tok)
13496 return -EINVAL;
13497 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13498 return -EINVAL;
13499 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13500 return -EINVAL;
13501 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13502 return -EINVAL;
13503 if (tok->offset + tok->len > data_size)
13504 return -EINVAL;
13505 }
13506
13507 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13508 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13509 if (!rdev->wiphy.wowlan->tcp->seq)
13510 return -EINVAL;
13511 if (seq->len == 0 || seq->len > 4)
13512 return -EINVAL;
13513 if (seq->len + seq->offset > data_size)
13514 return -EINVAL;
13515 }
13516
13517 size = sizeof(*cfg);
13518 size += data_size;
13519 size += wake_size + wake_mask_size;
13520 size += tokens_size;
13521
13522 cfg = kzalloc(size, GFP_KERNEL);
13523 if (!cfg)
13524 return -ENOMEM;
13525 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13526 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13527 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13528 ETH_ALEN);
13529 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13530 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13531 else
13532 port = 0;
13533 #ifdef CONFIG_INET
13534 /* allocate a socket and port for it and use it */
13535 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13536 IPPROTO_TCP, &cfg->sock, 1);
13537 if (err) {
13538 kfree(cfg);
13539 return err;
13540 }
13541 if (inet_csk_get_port(cfg->sock->sk, port)) {
13542 sock_release(cfg->sock);
13543 kfree(cfg);
13544 return -EADDRINUSE;
13545 }
13546 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13547 #else
13548 if (!port) {
13549 kfree(cfg);
13550 return -EINVAL;
13551 }
13552 cfg->src_port = port;
13553 #endif
13554
13555 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13556 cfg->payload_len = data_size;
13557 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13558 memcpy((void *)cfg->payload,
13559 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13560 data_size);
13561 if (seq)
13562 cfg->payload_seq = *seq;
13563 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13564 cfg->wake_len = wake_size;
13565 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13566 memcpy((void *)cfg->wake_data,
13567 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13568 wake_size);
13569 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13570 data_size + wake_size;
13571 memcpy((void *)cfg->wake_mask,
13572 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13573 wake_mask_size);
13574 if (tok) {
13575 cfg->tokens_size = tokens_size;
13576 cfg->payload_tok = *tok;
13577 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13578 tokens_size);
13579 }
13580
13581 trig->tcp = cfg;
13582
13583 return 0;
13584 }
13585
nl80211_parse_wowlan_nd(struct cfg80211_registered_device * rdev,const struct wiphy_wowlan_support * wowlan,struct nlattr * attr,struct cfg80211_wowlan * trig)13586 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13587 const struct wiphy_wowlan_support *wowlan,
13588 struct nlattr *attr,
13589 struct cfg80211_wowlan *trig)
13590 {
13591 struct nlattr **tb;
13592 int err;
13593
13594 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13595 if (!tb)
13596 return -ENOMEM;
13597
13598 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13599 err = -EOPNOTSUPP;
13600 goto out;
13601 }
13602
13603 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13604 nl80211_policy, NULL);
13605 if (err)
13606 goto out;
13607
13608 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13609 wowlan->max_nd_match_sets);
13610 err = PTR_ERR_OR_ZERO(trig->nd_config);
13611 if (err)
13612 trig->nd_config = NULL;
13613
13614 out:
13615 kfree(tb);
13616 return err;
13617 }
13618
nl80211_set_wowlan(struct sk_buff * skb,struct genl_info * info)13619 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13620 {
13621 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13622 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13623 struct cfg80211_wowlan new_triggers = {};
13624 struct cfg80211_wowlan *ntrig;
13625 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13626 int err, i;
13627 bool prev_enabled = rdev->wiphy.wowlan_config;
13628 bool regular = false;
13629
13630 if (!wowlan)
13631 return -EOPNOTSUPP;
13632
13633 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13634 cfg80211_rdev_free_wowlan(rdev);
13635 rdev->wiphy.wowlan_config = NULL;
13636 goto set_wakeup;
13637 }
13638
13639 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13640 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13641 nl80211_wowlan_policy, info->extack);
13642 if (err)
13643 return err;
13644
13645 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13646 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13647 return -EINVAL;
13648 new_triggers.any = true;
13649 }
13650
13651 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13652 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13653 return -EINVAL;
13654 new_triggers.disconnect = true;
13655 regular = true;
13656 }
13657
13658 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13659 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13660 return -EINVAL;
13661 new_triggers.magic_pkt = true;
13662 regular = true;
13663 }
13664
13665 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13666 return -EINVAL;
13667
13668 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13669 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13670 return -EINVAL;
13671 new_triggers.gtk_rekey_failure = true;
13672 regular = true;
13673 }
13674
13675 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13676 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13677 return -EINVAL;
13678 new_triggers.eap_identity_req = true;
13679 regular = true;
13680 }
13681
13682 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13683 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13684 return -EINVAL;
13685 new_triggers.four_way_handshake = true;
13686 regular = true;
13687 }
13688
13689 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13690 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13691 return -EINVAL;
13692 new_triggers.rfkill_release = true;
13693 regular = true;
13694 }
13695
13696 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13697 struct nlattr *pat;
13698 int n_patterns = 0;
13699 int rem, pat_len, mask_len, pkt_offset;
13700 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13701
13702 regular = true;
13703
13704 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13705 rem)
13706 n_patterns++;
13707 if (n_patterns > wowlan->n_patterns)
13708 return -EINVAL;
13709
13710 new_triggers.patterns = kcalloc(n_patterns,
13711 sizeof(new_triggers.patterns[0]),
13712 GFP_KERNEL);
13713 if (!new_triggers.patterns)
13714 return -ENOMEM;
13715
13716 new_triggers.n_patterns = n_patterns;
13717 i = 0;
13718
13719 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13720 rem) {
13721 u8 *mask_pat;
13722
13723 err = nla_parse_nested_deprecated(pat_tb,
13724 MAX_NL80211_PKTPAT,
13725 pat,
13726 nl80211_packet_pattern_policy,
13727 info->extack);
13728 if (err)
13729 goto error;
13730
13731 err = -EINVAL;
13732 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13733 !pat_tb[NL80211_PKTPAT_PATTERN])
13734 goto error;
13735 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13736 mask_len = DIV_ROUND_UP(pat_len, 8);
13737 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13738 goto error;
13739 if (pat_len > wowlan->pattern_max_len ||
13740 pat_len < wowlan->pattern_min_len)
13741 goto error;
13742
13743 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13744 pkt_offset = 0;
13745 else
13746 pkt_offset = nla_get_u32(
13747 pat_tb[NL80211_PKTPAT_OFFSET]);
13748 if (pkt_offset > wowlan->max_pkt_offset)
13749 goto error;
13750 new_triggers.patterns[i].pkt_offset = pkt_offset;
13751
13752 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13753 if (!mask_pat) {
13754 err = -ENOMEM;
13755 goto error;
13756 }
13757 new_triggers.patterns[i].mask = mask_pat;
13758 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13759 mask_len);
13760 mask_pat += mask_len;
13761 new_triggers.patterns[i].pattern = mask_pat;
13762 new_triggers.patterns[i].pattern_len = pat_len;
13763 memcpy(mask_pat,
13764 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13765 pat_len);
13766 i++;
13767 }
13768 }
13769
13770 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13771 regular = true;
13772 err = nl80211_parse_wowlan_tcp(
13773 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13774 &new_triggers);
13775 if (err)
13776 goto error;
13777 }
13778
13779 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13780 regular = true;
13781 err = nl80211_parse_wowlan_nd(
13782 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13783 &new_triggers);
13784 if (err)
13785 goto error;
13786 }
13787
13788 /* The 'any' trigger means the device continues operating more or less
13789 * as in its normal operation mode and wakes up the host on most of the
13790 * normal interrupts (like packet RX, ...)
13791 * It therefore makes little sense to combine with the more constrained
13792 * wakeup trigger modes.
13793 */
13794 if (new_triggers.any && regular) {
13795 err = -EINVAL;
13796 goto error;
13797 }
13798
13799 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13800 if (!ntrig) {
13801 err = -ENOMEM;
13802 goto error;
13803 }
13804 cfg80211_rdev_free_wowlan(rdev);
13805 rdev->wiphy.wowlan_config = ntrig;
13806
13807 set_wakeup:
13808 if (rdev->ops->set_wakeup &&
13809 prev_enabled != !!rdev->wiphy.wowlan_config)
13810 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13811
13812 return 0;
13813 error:
13814 for (i = 0; i < new_triggers.n_patterns; i++)
13815 kfree(new_triggers.patterns[i].mask);
13816 kfree(new_triggers.patterns);
13817 if (new_triggers.tcp && new_triggers.tcp->sock)
13818 sock_release(new_triggers.tcp->sock);
13819 kfree(new_triggers.tcp);
13820 kfree(new_triggers.nd_config);
13821 return err;
13822 }
13823 #endif
13824
nl80211_send_coalesce_rules(struct sk_buff * msg,struct cfg80211_registered_device * rdev)13825 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13826 struct cfg80211_registered_device *rdev)
13827 {
13828 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13829 int i, j, pat_len;
13830 struct cfg80211_coalesce_rules *rule;
13831
13832 if (!rdev->coalesce->n_rules)
13833 return 0;
13834
13835 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13836 if (!nl_rules)
13837 return -ENOBUFS;
13838
13839 for (i = 0; i < rdev->coalesce->n_rules; i++) {
13840 nl_rule = nla_nest_start_noflag(msg, i + 1);
13841 if (!nl_rule)
13842 return -ENOBUFS;
13843
13844 rule = &rdev->coalesce->rules[i];
13845 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13846 rule->delay))
13847 return -ENOBUFS;
13848
13849 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13850 rule->condition))
13851 return -ENOBUFS;
13852
13853 nl_pats = nla_nest_start_noflag(msg,
13854 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13855 if (!nl_pats)
13856 return -ENOBUFS;
13857
13858 for (j = 0; j < rule->n_patterns; j++) {
13859 nl_pat = nla_nest_start_noflag(msg, j + 1);
13860 if (!nl_pat)
13861 return -ENOBUFS;
13862 pat_len = rule->patterns[j].pattern_len;
13863 if (nla_put(msg, NL80211_PKTPAT_MASK,
13864 DIV_ROUND_UP(pat_len, 8),
13865 rule->patterns[j].mask) ||
13866 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13867 rule->patterns[j].pattern) ||
13868 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13869 rule->patterns[j].pkt_offset))
13870 return -ENOBUFS;
13871 nla_nest_end(msg, nl_pat);
13872 }
13873 nla_nest_end(msg, nl_pats);
13874 nla_nest_end(msg, nl_rule);
13875 }
13876 nla_nest_end(msg, nl_rules);
13877
13878 return 0;
13879 }
13880
nl80211_get_coalesce(struct sk_buff * skb,struct genl_info * info)13881 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13882 {
13883 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13884 struct sk_buff *msg;
13885 void *hdr;
13886
13887 if (!rdev->wiphy.coalesce)
13888 return -EOPNOTSUPP;
13889
13890 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13891 if (!msg)
13892 return -ENOMEM;
13893
13894 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13895 NL80211_CMD_GET_COALESCE);
13896 if (!hdr)
13897 goto nla_put_failure;
13898
13899 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13900 goto nla_put_failure;
13901
13902 genlmsg_end(msg, hdr);
13903 return genlmsg_reply(msg, info);
13904
13905 nla_put_failure:
13906 nlmsg_free(msg);
13907 return -ENOBUFS;
13908 }
13909
cfg80211_rdev_free_coalesce(struct cfg80211_registered_device * rdev)13910 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13911 {
13912 struct cfg80211_coalesce *coalesce = rdev->coalesce;
13913 int i, j;
13914 struct cfg80211_coalesce_rules *rule;
13915
13916 if (!coalesce)
13917 return;
13918
13919 for (i = 0; i < coalesce->n_rules; i++) {
13920 rule = &coalesce->rules[i];
13921 for (j = 0; j < rule->n_patterns; j++)
13922 kfree(rule->patterns[j].mask);
13923 kfree(rule->patterns);
13924 }
13925 kfree(coalesce->rules);
13926 kfree(coalesce);
13927 rdev->coalesce = NULL;
13928 }
13929
nl80211_parse_coalesce_rule(struct cfg80211_registered_device * rdev,struct nlattr * rule,struct cfg80211_coalesce_rules * new_rule)13930 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13931 struct nlattr *rule,
13932 struct cfg80211_coalesce_rules *new_rule)
13933 {
13934 int err, i;
13935 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13936 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13937 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13938 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13939
13940 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13941 rule, nl80211_coalesce_policy, NULL);
13942 if (err)
13943 return err;
13944
13945 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13946 new_rule->delay =
13947 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13948 if (new_rule->delay > coalesce->max_delay)
13949 return -EINVAL;
13950
13951 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13952 new_rule->condition =
13953 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13954
13955 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13956 return -EINVAL;
13957
13958 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13959 rem)
13960 n_patterns++;
13961 if (n_patterns > coalesce->n_patterns)
13962 return -EINVAL;
13963
13964 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13965 GFP_KERNEL);
13966 if (!new_rule->patterns)
13967 return -ENOMEM;
13968
13969 new_rule->n_patterns = n_patterns;
13970 i = 0;
13971
13972 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13973 rem) {
13974 u8 *mask_pat;
13975
13976 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13977 pat,
13978 nl80211_packet_pattern_policy,
13979 NULL);
13980 if (err)
13981 return err;
13982
13983 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13984 !pat_tb[NL80211_PKTPAT_PATTERN])
13985 return -EINVAL;
13986 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13987 mask_len = DIV_ROUND_UP(pat_len, 8);
13988 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13989 return -EINVAL;
13990 if (pat_len > coalesce->pattern_max_len ||
13991 pat_len < coalesce->pattern_min_len)
13992 return -EINVAL;
13993
13994 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13995 pkt_offset = 0;
13996 else
13997 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13998 if (pkt_offset > coalesce->max_pkt_offset)
13999 return -EINVAL;
14000 new_rule->patterns[i].pkt_offset = pkt_offset;
14001
14002 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
14003 if (!mask_pat)
14004 return -ENOMEM;
14005
14006 new_rule->patterns[i].mask = mask_pat;
14007 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
14008 mask_len);
14009
14010 mask_pat += mask_len;
14011 new_rule->patterns[i].pattern = mask_pat;
14012 new_rule->patterns[i].pattern_len = pat_len;
14013 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
14014 pat_len);
14015 i++;
14016 }
14017
14018 return 0;
14019 }
14020
nl80211_set_coalesce(struct sk_buff * skb,struct genl_info * info)14021 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
14022 {
14023 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14024 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
14025 struct cfg80211_coalesce new_coalesce = {};
14026 struct cfg80211_coalesce *n_coalesce;
14027 int err, rem_rule, n_rules = 0, i, j;
14028 struct nlattr *rule;
14029 struct cfg80211_coalesce_rules *tmp_rule;
14030
14031 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
14032 return -EOPNOTSUPP;
14033
14034 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
14035 cfg80211_rdev_free_coalesce(rdev);
14036 rdev_set_coalesce(rdev, NULL);
14037 return 0;
14038 }
14039
14040 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14041 rem_rule)
14042 n_rules++;
14043 if (n_rules > coalesce->n_rules)
14044 return -EINVAL;
14045
14046 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
14047 GFP_KERNEL);
14048 if (!new_coalesce.rules)
14049 return -ENOMEM;
14050
14051 new_coalesce.n_rules = n_rules;
14052 i = 0;
14053
14054 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14055 rem_rule) {
14056 err = nl80211_parse_coalesce_rule(rdev, rule,
14057 &new_coalesce.rules[i]);
14058 if (err)
14059 goto error;
14060
14061 i++;
14062 }
14063
14064 err = rdev_set_coalesce(rdev, &new_coalesce);
14065 if (err)
14066 goto error;
14067
14068 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
14069 if (!n_coalesce) {
14070 err = -ENOMEM;
14071 goto error;
14072 }
14073 cfg80211_rdev_free_coalesce(rdev);
14074 rdev->coalesce = n_coalesce;
14075
14076 return 0;
14077 error:
14078 for (i = 0; i < new_coalesce.n_rules; i++) {
14079 tmp_rule = &new_coalesce.rules[i];
14080 if (!tmp_rule)
14081 continue;
14082 for (j = 0; j < tmp_rule->n_patterns; j++)
14083 kfree(tmp_rule->patterns[j].mask);
14084 kfree(tmp_rule->patterns);
14085 }
14086 kfree(new_coalesce.rules);
14087
14088 return err;
14089 }
14090
nl80211_set_rekey_data(struct sk_buff * skb,struct genl_info * info)14091 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
14092 {
14093 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14094 struct net_device *dev = info->user_ptr[1];
14095 struct wireless_dev *wdev = dev->ieee80211_ptr;
14096 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
14097 struct cfg80211_gtk_rekey_data rekey_data = {};
14098 int err;
14099
14100 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
14101 return -EINVAL;
14102
14103 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
14104 info->attrs[NL80211_ATTR_REKEY_DATA],
14105 nl80211_rekey_policy, info->extack);
14106 if (err)
14107 return err;
14108
14109 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
14110 !tb[NL80211_REKEY_DATA_KCK])
14111 return -EINVAL;
14112 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
14113 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14114 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
14115 return -ERANGE;
14116 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
14117 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14118 nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
14119 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
14120 nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
14121 return -ERANGE;
14122
14123 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
14124 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
14125 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
14126 rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
14127 rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
14128 if (tb[NL80211_REKEY_DATA_AKM])
14129 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
14130
14131 wdev_lock(wdev);
14132 if (!wdev->connected) {
14133 err = -ENOTCONN;
14134 goto out;
14135 }
14136
14137 if (!rdev->ops->set_rekey_data) {
14138 err = -EOPNOTSUPP;
14139 goto out;
14140 }
14141
14142 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
14143 out:
14144 wdev_unlock(wdev);
14145 return err;
14146 }
14147
nl80211_register_unexpected_frame(struct sk_buff * skb,struct genl_info * info)14148 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
14149 struct genl_info *info)
14150 {
14151 struct net_device *dev = info->user_ptr[1];
14152 struct wireless_dev *wdev = dev->ieee80211_ptr;
14153
14154 if (wdev->iftype != NL80211_IFTYPE_AP &&
14155 wdev->iftype != NL80211_IFTYPE_P2P_GO)
14156 return -EINVAL;
14157
14158 if (wdev->ap_unexpected_nlportid)
14159 return -EBUSY;
14160
14161 wdev->ap_unexpected_nlportid = info->snd_portid;
14162 return 0;
14163 }
14164
nl80211_probe_client(struct sk_buff * skb,struct genl_info * info)14165 static int nl80211_probe_client(struct sk_buff *skb,
14166 struct genl_info *info)
14167 {
14168 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14169 struct net_device *dev = info->user_ptr[1];
14170 struct wireless_dev *wdev = dev->ieee80211_ptr;
14171 struct sk_buff *msg;
14172 void *hdr;
14173 const u8 *addr;
14174 u64 cookie;
14175 int err;
14176
14177 if (wdev->iftype != NL80211_IFTYPE_AP &&
14178 wdev->iftype != NL80211_IFTYPE_P2P_GO)
14179 return -EOPNOTSUPP;
14180
14181 if (!info->attrs[NL80211_ATTR_MAC])
14182 return -EINVAL;
14183
14184 if (!rdev->ops->probe_client)
14185 return -EOPNOTSUPP;
14186
14187 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14188 if (!msg)
14189 return -ENOMEM;
14190
14191 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14192 NL80211_CMD_PROBE_CLIENT);
14193 if (!hdr) {
14194 err = -ENOBUFS;
14195 goto free_msg;
14196 }
14197
14198 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14199
14200 err = rdev_probe_client(rdev, dev, addr, &cookie);
14201 if (err)
14202 goto free_msg;
14203
14204 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14205 NL80211_ATTR_PAD))
14206 goto nla_put_failure;
14207
14208 genlmsg_end(msg, hdr);
14209
14210 return genlmsg_reply(msg, info);
14211
14212 nla_put_failure:
14213 err = -ENOBUFS;
14214 free_msg:
14215 nlmsg_free(msg);
14216 return err;
14217 }
14218
nl80211_register_beacons(struct sk_buff * skb,struct genl_info * info)14219 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
14220 {
14221 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14222 struct cfg80211_beacon_registration *reg, *nreg;
14223 int rv;
14224
14225 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
14226 return -EOPNOTSUPP;
14227
14228 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
14229 if (!nreg)
14230 return -ENOMEM;
14231
14232 /* First, check if already registered. */
14233 spin_lock_bh(&rdev->beacon_registrations_lock);
14234 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14235 if (reg->nlportid == info->snd_portid) {
14236 rv = -EALREADY;
14237 goto out_err;
14238 }
14239 }
14240 /* Add it to the list */
14241 nreg->nlportid = info->snd_portid;
14242 list_add(&nreg->list, &rdev->beacon_registrations);
14243
14244 spin_unlock_bh(&rdev->beacon_registrations_lock);
14245
14246 return 0;
14247 out_err:
14248 spin_unlock_bh(&rdev->beacon_registrations_lock);
14249 kfree(nreg);
14250 return rv;
14251 }
14252
nl80211_start_p2p_device(struct sk_buff * skb,struct genl_info * info)14253 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
14254 {
14255 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14256 struct wireless_dev *wdev = info->user_ptr[1];
14257 int err;
14258
14259 if (!rdev->ops->start_p2p_device)
14260 return -EOPNOTSUPP;
14261
14262 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14263 return -EOPNOTSUPP;
14264
14265 if (wdev_running(wdev))
14266 return 0;
14267
14268 if (rfkill_blocked(rdev->wiphy.rfkill))
14269 return -ERFKILL;
14270
14271 err = rdev_start_p2p_device(rdev, wdev);
14272 if (err)
14273 return err;
14274
14275 wdev->is_running = true;
14276 rdev->opencount++;
14277
14278 return 0;
14279 }
14280
nl80211_stop_p2p_device(struct sk_buff * skb,struct genl_info * info)14281 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
14282 {
14283 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14284 struct wireless_dev *wdev = info->user_ptr[1];
14285
14286 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14287 return -EOPNOTSUPP;
14288
14289 if (!rdev->ops->stop_p2p_device)
14290 return -EOPNOTSUPP;
14291
14292 cfg80211_stop_p2p_device(rdev, wdev);
14293
14294 return 0;
14295 }
14296
nl80211_start_nan(struct sk_buff * skb,struct genl_info * info)14297 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
14298 {
14299 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14300 struct wireless_dev *wdev = info->user_ptr[1];
14301 struct cfg80211_nan_conf conf = {};
14302 int err;
14303
14304 if (wdev->iftype != NL80211_IFTYPE_NAN)
14305 return -EOPNOTSUPP;
14306
14307 if (wdev_running(wdev))
14308 return -EEXIST;
14309
14310 if (rfkill_blocked(rdev->wiphy.rfkill))
14311 return -ERFKILL;
14312
14313 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14314 return -EINVAL;
14315
14316 conf.master_pref =
14317 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14318
14319 if (info->attrs[NL80211_ATTR_BANDS]) {
14320 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14321
14322 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14323 return -EOPNOTSUPP;
14324
14325 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14326 return -EINVAL;
14327
14328 conf.bands = bands;
14329 }
14330
14331 err = rdev_start_nan(rdev, wdev, &conf);
14332 if (err)
14333 return err;
14334
14335 wdev->is_running = true;
14336 rdev->opencount++;
14337
14338 return 0;
14339 }
14340
nl80211_stop_nan(struct sk_buff * skb,struct genl_info * info)14341 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14342 {
14343 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14344 struct wireless_dev *wdev = info->user_ptr[1];
14345
14346 if (wdev->iftype != NL80211_IFTYPE_NAN)
14347 return -EOPNOTSUPP;
14348
14349 cfg80211_stop_nan(rdev, wdev);
14350
14351 return 0;
14352 }
14353
validate_nan_filter(struct nlattr * filter_attr)14354 static int validate_nan_filter(struct nlattr *filter_attr)
14355 {
14356 struct nlattr *attr;
14357 int len = 0, n_entries = 0, rem;
14358
14359 nla_for_each_nested(attr, filter_attr, rem) {
14360 len += nla_len(attr);
14361 n_entries++;
14362 }
14363
14364 if (len >= U8_MAX)
14365 return -EINVAL;
14366
14367 return n_entries;
14368 }
14369
handle_nan_filter(struct nlattr * attr_filter,struct cfg80211_nan_func * func,bool tx)14370 static int handle_nan_filter(struct nlattr *attr_filter,
14371 struct cfg80211_nan_func *func,
14372 bool tx)
14373 {
14374 struct nlattr *attr;
14375 int n_entries, rem, i;
14376 struct cfg80211_nan_func_filter *filter;
14377
14378 n_entries = validate_nan_filter(attr_filter);
14379 if (n_entries < 0)
14380 return n_entries;
14381
14382 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14383
14384 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14385 if (!filter)
14386 return -ENOMEM;
14387
14388 i = 0;
14389 nla_for_each_nested(attr, attr_filter, rem) {
14390 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14391 if (!filter[i].filter)
14392 goto err;
14393
14394 filter[i].len = nla_len(attr);
14395 i++;
14396 }
14397 if (tx) {
14398 func->num_tx_filters = n_entries;
14399 func->tx_filters = filter;
14400 } else {
14401 func->num_rx_filters = n_entries;
14402 func->rx_filters = filter;
14403 }
14404
14405 return 0;
14406
14407 err:
14408 i = 0;
14409 nla_for_each_nested(attr, attr_filter, rem) {
14410 kfree(filter[i].filter);
14411 i++;
14412 }
14413 kfree(filter);
14414 return -ENOMEM;
14415 }
14416
nl80211_nan_add_func(struct sk_buff * skb,struct genl_info * info)14417 static int nl80211_nan_add_func(struct sk_buff *skb,
14418 struct genl_info *info)
14419 {
14420 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14421 struct wireless_dev *wdev = info->user_ptr[1];
14422 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14423 struct cfg80211_nan_func *func;
14424 struct sk_buff *msg = NULL;
14425 void *hdr = NULL;
14426 int err = 0;
14427
14428 if (wdev->iftype != NL80211_IFTYPE_NAN)
14429 return -EOPNOTSUPP;
14430
14431 if (!wdev_running(wdev))
14432 return -ENOTCONN;
14433
14434 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14435 return -EINVAL;
14436
14437 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14438 info->attrs[NL80211_ATTR_NAN_FUNC],
14439 nl80211_nan_func_policy,
14440 info->extack);
14441 if (err)
14442 return err;
14443
14444 func = kzalloc(sizeof(*func), GFP_KERNEL);
14445 if (!func)
14446 return -ENOMEM;
14447
14448 func->cookie = cfg80211_assign_cookie(rdev);
14449
14450 if (!tb[NL80211_NAN_FUNC_TYPE]) {
14451 err = -EINVAL;
14452 goto out;
14453 }
14454
14455
14456 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14457
14458 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14459 err = -EINVAL;
14460 goto out;
14461 }
14462
14463 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14464 sizeof(func->service_id));
14465
14466 func->close_range =
14467 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14468
14469 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14470 func->serv_spec_info_len =
14471 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14472 func->serv_spec_info =
14473 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14474 func->serv_spec_info_len,
14475 GFP_KERNEL);
14476 if (!func->serv_spec_info) {
14477 err = -ENOMEM;
14478 goto out;
14479 }
14480 }
14481
14482 if (tb[NL80211_NAN_FUNC_TTL])
14483 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14484
14485 switch (func->type) {
14486 case NL80211_NAN_FUNC_PUBLISH:
14487 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14488 err = -EINVAL;
14489 goto out;
14490 }
14491
14492 func->publish_type =
14493 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14494 func->publish_bcast =
14495 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14496
14497 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14498 func->publish_bcast) {
14499 err = -EINVAL;
14500 goto out;
14501 }
14502 break;
14503 case NL80211_NAN_FUNC_SUBSCRIBE:
14504 func->subscribe_active =
14505 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14506 break;
14507 case NL80211_NAN_FUNC_FOLLOW_UP:
14508 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14509 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14510 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14511 err = -EINVAL;
14512 goto out;
14513 }
14514
14515 func->followup_id =
14516 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14517 func->followup_reqid =
14518 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14519 memcpy(func->followup_dest.addr,
14520 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14521 sizeof(func->followup_dest.addr));
14522 if (func->ttl) {
14523 err = -EINVAL;
14524 goto out;
14525 }
14526 break;
14527 default:
14528 err = -EINVAL;
14529 goto out;
14530 }
14531
14532 if (tb[NL80211_NAN_FUNC_SRF]) {
14533 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14534
14535 err = nla_parse_nested_deprecated(srf_tb,
14536 NL80211_NAN_SRF_ATTR_MAX,
14537 tb[NL80211_NAN_FUNC_SRF],
14538 nl80211_nan_srf_policy,
14539 info->extack);
14540 if (err)
14541 goto out;
14542
14543 func->srf_include =
14544 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14545
14546 if (srf_tb[NL80211_NAN_SRF_BF]) {
14547 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14548 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14549 err = -EINVAL;
14550 goto out;
14551 }
14552
14553 func->srf_bf_len =
14554 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14555 func->srf_bf =
14556 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14557 func->srf_bf_len, GFP_KERNEL);
14558 if (!func->srf_bf) {
14559 err = -ENOMEM;
14560 goto out;
14561 }
14562
14563 func->srf_bf_idx =
14564 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14565 } else {
14566 struct nlattr *attr, *mac_attr =
14567 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14568 int n_entries, rem, i = 0;
14569
14570 if (!mac_attr) {
14571 err = -EINVAL;
14572 goto out;
14573 }
14574
14575 n_entries = validate_acl_mac_addrs(mac_attr);
14576 if (n_entries <= 0) {
14577 err = -EINVAL;
14578 goto out;
14579 }
14580
14581 func->srf_num_macs = n_entries;
14582 func->srf_macs =
14583 kcalloc(n_entries, sizeof(*func->srf_macs),
14584 GFP_KERNEL);
14585 if (!func->srf_macs) {
14586 err = -ENOMEM;
14587 goto out;
14588 }
14589
14590 nla_for_each_nested(attr, mac_attr, rem)
14591 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14592 sizeof(*func->srf_macs));
14593 }
14594 }
14595
14596 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14597 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14598 func, true);
14599 if (err)
14600 goto out;
14601 }
14602
14603 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14604 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14605 func, false);
14606 if (err)
14607 goto out;
14608 }
14609
14610 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14611 if (!msg) {
14612 err = -ENOMEM;
14613 goto out;
14614 }
14615
14616 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14617 NL80211_CMD_ADD_NAN_FUNCTION);
14618 /* This can't really happen - we just allocated 4KB */
14619 if (WARN_ON(!hdr)) {
14620 err = -ENOMEM;
14621 goto out;
14622 }
14623
14624 err = rdev_add_nan_func(rdev, wdev, func);
14625 out:
14626 if (err < 0) {
14627 cfg80211_free_nan_func(func);
14628 nlmsg_free(msg);
14629 return err;
14630 }
14631
14632 /* propagate the instance id and cookie to userspace */
14633 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14634 NL80211_ATTR_PAD))
14635 goto nla_put_failure;
14636
14637 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14638 if (!func_attr)
14639 goto nla_put_failure;
14640
14641 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14642 func->instance_id))
14643 goto nla_put_failure;
14644
14645 nla_nest_end(msg, func_attr);
14646
14647 genlmsg_end(msg, hdr);
14648 return genlmsg_reply(msg, info);
14649
14650 nla_put_failure:
14651 nlmsg_free(msg);
14652 return -ENOBUFS;
14653 }
14654
nl80211_nan_del_func(struct sk_buff * skb,struct genl_info * info)14655 static int nl80211_nan_del_func(struct sk_buff *skb,
14656 struct genl_info *info)
14657 {
14658 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14659 struct wireless_dev *wdev = info->user_ptr[1];
14660 u64 cookie;
14661
14662 if (wdev->iftype != NL80211_IFTYPE_NAN)
14663 return -EOPNOTSUPP;
14664
14665 if (!wdev_running(wdev))
14666 return -ENOTCONN;
14667
14668 if (!info->attrs[NL80211_ATTR_COOKIE])
14669 return -EINVAL;
14670
14671 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14672
14673 rdev_del_nan_func(rdev, wdev, cookie);
14674
14675 return 0;
14676 }
14677
nl80211_nan_change_config(struct sk_buff * skb,struct genl_info * info)14678 static int nl80211_nan_change_config(struct sk_buff *skb,
14679 struct genl_info *info)
14680 {
14681 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14682 struct wireless_dev *wdev = info->user_ptr[1];
14683 struct cfg80211_nan_conf conf = {};
14684 u32 changed = 0;
14685
14686 if (wdev->iftype != NL80211_IFTYPE_NAN)
14687 return -EOPNOTSUPP;
14688
14689 if (!wdev_running(wdev))
14690 return -ENOTCONN;
14691
14692 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14693 conf.master_pref =
14694 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14695 if (conf.master_pref <= 1 || conf.master_pref == 255)
14696 return -EINVAL;
14697
14698 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14699 }
14700
14701 if (info->attrs[NL80211_ATTR_BANDS]) {
14702 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14703
14704 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14705 return -EOPNOTSUPP;
14706
14707 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14708 return -EINVAL;
14709
14710 conf.bands = bands;
14711 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14712 }
14713
14714 if (!changed)
14715 return -EINVAL;
14716
14717 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14718 }
14719
cfg80211_nan_match(struct wireless_dev * wdev,struct cfg80211_nan_match_params * match,gfp_t gfp)14720 void cfg80211_nan_match(struct wireless_dev *wdev,
14721 struct cfg80211_nan_match_params *match, gfp_t gfp)
14722 {
14723 struct wiphy *wiphy = wdev->wiphy;
14724 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14725 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14726 struct sk_buff *msg;
14727 void *hdr;
14728
14729 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14730 return;
14731
14732 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14733 if (!msg)
14734 return;
14735
14736 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14737 if (!hdr) {
14738 nlmsg_free(msg);
14739 return;
14740 }
14741
14742 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14743 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14744 wdev->netdev->ifindex)) ||
14745 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14746 NL80211_ATTR_PAD))
14747 goto nla_put_failure;
14748
14749 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14750 NL80211_ATTR_PAD) ||
14751 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14752 goto nla_put_failure;
14753
14754 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14755 if (!match_attr)
14756 goto nla_put_failure;
14757
14758 local_func_attr = nla_nest_start_noflag(msg,
14759 NL80211_NAN_MATCH_FUNC_LOCAL);
14760 if (!local_func_attr)
14761 goto nla_put_failure;
14762
14763 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14764 goto nla_put_failure;
14765
14766 nla_nest_end(msg, local_func_attr);
14767
14768 peer_func_attr = nla_nest_start_noflag(msg,
14769 NL80211_NAN_MATCH_FUNC_PEER);
14770 if (!peer_func_attr)
14771 goto nla_put_failure;
14772
14773 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14774 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14775 goto nla_put_failure;
14776
14777 if (match->info && match->info_len &&
14778 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14779 match->info))
14780 goto nla_put_failure;
14781
14782 nla_nest_end(msg, peer_func_attr);
14783 nla_nest_end(msg, match_attr);
14784 genlmsg_end(msg, hdr);
14785
14786 if (!wdev->owner_nlportid)
14787 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14788 msg, 0, NL80211_MCGRP_NAN, gfp);
14789 else
14790 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14791 wdev->owner_nlportid);
14792
14793 return;
14794
14795 nla_put_failure:
14796 nlmsg_free(msg);
14797 }
14798 EXPORT_SYMBOL(cfg80211_nan_match);
14799
cfg80211_nan_func_terminated(struct wireless_dev * wdev,u8 inst_id,enum nl80211_nan_func_term_reason reason,u64 cookie,gfp_t gfp)14800 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14801 u8 inst_id,
14802 enum nl80211_nan_func_term_reason reason,
14803 u64 cookie, gfp_t gfp)
14804 {
14805 struct wiphy *wiphy = wdev->wiphy;
14806 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14807 struct sk_buff *msg;
14808 struct nlattr *func_attr;
14809 void *hdr;
14810
14811 if (WARN_ON(!inst_id))
14812 return;
14813
14814 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14815 if (!msg)
14816 return;
14817
14818 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14819 if (!hdr) {
14820 nlmsg_free(msg);
14821 return;
14822 }
14823
14824 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14825 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14826 wdev->netdev->ifindex)) ||
14827 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14828 NL80211_ATTR_PAD))
14829 goto nla_put_failure;
14830
14831 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14832 NL80211_ATTR_PAD))
14833 goto nla_put_failure;
14834
14835 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14836 if (!func_attr)
14837 goto nla_put_failure;
14838
14839 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14840 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14841 goto nla_put_failure;
14842
14843 nla_nest_end(msg, func_attr);
14844 genlmsg_end(msg, hdr);
14845
14846 if (!wdev->owner_nlportid)
14847 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14848 msg, 0, NL80211_MCGRP_NAN, gfp);
14849 else
14850 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14851 wdev->owner_nlportid);
14852
14853 return;
14854
14855 nla_put_failure:
14856 nlmsg_free(msg);
14857 }
14858 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14859
nl80211_get_protocol_features(struct sk_buff * skb,struct genl_info * info)14860 static int nl80211_get_protocol_features(struct sk_buff *skb,
14861 struct genl_info *info)
14862 {
14863 void *hdr;
14864 struct sk_buff *msg;
14865
14866 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14867 if (!msg)
14868 return -ENOMEM;
14869
14870 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14871 NL80211_CMD_GET_PROTOCOL_FEATURES);
14872 if (!hdr)
14873 goto nla_put_failure;
14874
14875 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14876 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14877 goto nla_put_failure;
14878
14879 genlmsg_end(msg, hdr);
14880 return genlmsg_reply(msg, info);
14881
14882 nla_put_failure:
14883 kfree_skb(msg);
14884 return -ENOBUFS;
14885 }
14886
nl80211_update_ft_ies(struct sk_buff * skb,struct genl_info * info)14887 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14888 {
14889 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14890 struct cfg80211_update_ft_ies_params ft_params;
14891 struct net_device *dev = info->user_ptr[1];
14892
14893 if (!rdev->ops->update_ft_ies)
14894 return -EOPNOTSUPP;
14895
14896 if (!info->attrs[NL80211_ATTR_MDID] ||
14897 !info->attrs[NL80211_ATTR_IE])
14898 return -EINVAL;
14899
14900 memset(&ft_params, 0, sizeof(ft_params));
14901 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14902 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14903 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14904
14905 return rdev_update_ft_ies(rdev, dev, &ft_params);
14906 }
14907
nl80211_crit_protocol_start(struct sk_buff * skb,struct genl_info * info)14908 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14909 struct genl_info *info)
14910 {
14911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14912 struct wireless_dev *wdev = info->user_ptr[1];
14913 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14914 u16 duration;
14915 int ret;
14916
14917 if (!rdev->ops->crit_proto_start)
14918 return -EOPNOTSUPP;
14919
14920 if (WARN_ON(!rdev->ops->crit_proto_stop))
14921 return -EINVAL;
14922
14923 if (rdev->crit_proto_nlportid)
14924 return -EBUSY;
14925
14926 /* determine protocol if provided */
14927 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14928 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14929
14930 if (proto >= NUM_NL80211_CRIT_PROTO)
14931 return -EINVAL;
14932
14933 /* timeout must be provided */
14934 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14935 return -EINVAL;
14936
14937 duration =
14938 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14939
14940 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14941 if (!ret)
14942 rdev->crit_proto_nlportid = info->snd_portid;
14943
14944 return ret;
14945 }
14946
nl80211_crit_protocol_stop(struct sk_buff * skb,struct genl_info * info)14947 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14948 struct genl_info *info)
14949 {
14950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14951 struct wireless_dev *wdev = info->user_ptr[1];
14952
14953 if (!rdev->ops->crit_proto_stop)
14954 return -EOPNOTSUPP;
14955
14956 if (rdev->crit_proto_nlportid) {
14957 rdev->crit_proto_nlportid = 0;
14958 rdev_crit_proto_stop(rdev, wdev);
14959 }
14960 return 0;
14961 }
14962
nl80211_vendor_check_policy(const struct wiphy_vendor_command * vcmd,struct nlattr * attr,struct netlink_ext_ack * extack)14963 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14964 struct nlattr *attr,
14965 struct netlink_ext_ack *extack)
14966 {
14967 if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14968 if (attr->nla_type & NLA_F_NESTED) {
14969 NL_SET_ERR_MSG_ATTR(extack, attr,
14970 "unexpected nested data");
14971 return -EINVAL;
14972 }
14973
14974 return 0;
14975 }
14976
14977 if (!(attr->nla_type & NLA_F_NESTED)) {
14978 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14979 return -EINVAL;
14980 }
14981
14982 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14983 }
14984
nl80211_vendor_cmd(struct sk_buff * skb,struct genl_info * info)14985 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14986 {
14987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14988 struct wireless_dev *wdev =
14989 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14990 info->attrs);
14991 int i, err;
14992 u32 vid, subcmd;
14993
14994 if (!rdev->wiphy.vendor_commands)
14995 return -EOPNOTSUPP;
14996
14997 if (IS_ERR(wdev)) {
14998 err = PTR_ERR(wdev);
14999 if (err != -EINVAL)
15000 return err;
15001 wdev = NULL;
15002 } else if (wdev->wiphy != &rdev->wiphy) {
15003 return -EINVAL;
15004 }
15005
15006 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
15007 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
15008 return -EINVAL;
15009
15010 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
15011 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
15012 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
15013 const struct wiphy_vendor_command *vcmd;
15014 void *data = NULL;
15015 int len = 0;
15016
15017 vcmd = &rdev->wiphy.vendor_commands[i];
15018
15019 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15020 continue;
15021
15022 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15023 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15024 if (!wdev)
15025 return -EINVAL;
15026 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15027 !wdev->netdev)
15028 return -EINVAL;
15029
15030 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15031 if (!wdev_running(wdev))
15032 return -ENETDOWN;
15033 }
15034 } else {
15035 wdev = NULL;
15036 }
15037
15038 if (!vcmd->doit)
15039 return -EOPNOTSUPP;
15040
15041 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
15042 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15043 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15044
15045 err = nl80211_vendor_check_policy(vcmd,
15046 info->attrs[NL80211_ATTR_VENDOR_DATA],
15047 info->extack);
15048 if (err)
15049 return err;
15050 }
15051
15052 rdev->cur_cmd_info = info;
15053 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
15054 rdev->cur_cmd_info = NULL;
15055 return err;
15056 }
15057
15058 return -EOPNOTSUPP;
15059 }
15060
nl80211_prepare_vendor_dump(struct sk_buff * skb,struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)15061 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
15062 struct netlink_callback *cb,
15063 struct cfg80211_registered_device **rdev,
15064 struct wireless_dev **wdev)
15065 {
15066 struct nlattr **attrbuf;
15067 u32 vid, subcmd;
15068 unsigned int i;
15069 int vcmd_idx = -1;
15070 int err;
15071 void *data = NULL;
15072 unsigned int data_len = 0;
15073
15074 if (cb->args[0]) {
15075 /* subtract the 1 again here */
15076 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
15077 struct wireless_dev *tmp;
15078
15079 if (!wiphy)
15080 return -ENODEV;
15081 *rdev = wiphy_to_rdev(wiphy);
15082 *wdev = NULL;
15083
15084 if (cb->args[1]) {
15085 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
15086 if (tmp->identifier == cb->args[1] - 1) {
15087 *wdev = tmp;
15088 break;
15089 }
15090 }
15091 }
15092
15093 /* keep rtnl locked in successful case */
15094 return 0;
15095 }
15096
15097 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
15098 if (!attrbuf)
15099 return -ENOMEM;
15100
15101 err = nlmsg_parse_deprecated(cb->nlh,
15102 GENL_HDRLEN + nl80211_fam.hdrsize,
15103 attrbuf, nl80211_fam.maxattr,
15104 nl80211_policy, NULL);
15105 if (err)
15106 goto out;
15107
15108 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
15109 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
15110 err = -EINVAL;
15111 goto out;
15112 }
15113
15114 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
15115 if (IS_ERR(*wdev))
15116 *wdev = NULL;
15117
15118 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
15119 if (IS_ERR(*rdev)) {
15120 err = PTR_ERR(*rdev);
15121 goto out;
15122 }
15123
15124 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
15125 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
15126
15127 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
15128 const struct wiphy_vendor_command *vcmd;
15129
15130 vcmd = &(*rdev)->wiphy.vendor_commands[i];
15131
15132 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15133 continue;
15134
15135 if (!vcmd->dumpit) {
15136 err = -EOPNOTSUPP;
15137 goto out;
15138 }
15139
15140 vcmd_idx = i;
15141 break;
15142 }
15143
15144 if (vcmd_idx < 0) {
15145 err = -EOPNOTSUPP;
15146 goto out;
15147 }
15148
15149 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
15150 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15151 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15152
15153 err = nl80211_vendor_check_policy(
15154 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
15155 attrbuf[NL80211_ATTR_VENDOR_DATA],
15156 cb->extack);
15157 if (err)
15158 goto out;
15159 }
15160
15161 /* 0 is the first index - add 1 to parse only once */
15162 cb->args[0] = (*rdev)->wiphy_idx + 1;
15163 /* add 1 to know if it was NULL */
15164 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
15165 cb->args[2] = vcmd_idx;
15166 cb->args[3] = (unsigned long)data;
15167 cb->args[4] = data_len;
15168
15169 /* keep rtnl locked in successful case */
15170 err = 0;
15171 out:
15172 kfree(attrbuf);
15173 return err;
15174 }
15175
nl80211_vendor_cmd_dump(struct sk_buff * skb,struct netlink_callback * cb)15176 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
15177 struct netlink_callback *cb)
15178 {
15179 struct cfg80211_registered_device *rdev;
15180 struct wireless_dev *wdev;
15181 unsigned int vcmd_idx;
15182 const struct wiphy_vendor_command *vcmd;
15183 void *data;
15184 int data_len;
15185 int err;
15186 struct nlattr *vendor_data;
15187
15188 rtnl_lock();
15189 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
15190 if (err)
15191 goto out;
15192
15193 vcmd_idx = cb->args[2];
15194 data = (void *)cb->args[3];
15195 data_len = cb->args[4];
15196 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
15197
15198 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15199 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15200 if (!wdev) {
15201 err = -EINVAL;
15202 goto out;
15203 }
15204 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15205 !wdev->netdev) {
15206 err = -EINVAL;
15207 goto out;
15208 }
15209
15210 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15211 if (!wdev_running(wdev)) {
15212 err = -ENETDOWN;
15213 goto out;
15214 }
15215 }
15216 }
15217
15218 while (1) {
15219 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
15220 cb->nlh->nlmsg_seq, NLM_F_MULTI,
15221 NL80211_CMD_VENDOR);
15222 if (!hdr)
15223 break;
15224
15225 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15226 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
15227 wdev_id(wdev),
15228 NL80211_ATTR_PAD))) {
15229 genlmsg_cancel(skb, hdr);
15230 break;
15231 }
15232
15233 vendor_data = nla_nest_start_noflag(skb,
15234 NL80211_ATTR_VENDOR_DATA);
15235 if (!vendor_data) {
15236 genlmsg_cancel(skb, hdr);
15237 break;
15238 }
15239
15240 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
15241 (unsigned long *)&cb->args[5]);
15242 nla_nest_end(skb, vendor_data);
15243
15244 if (err == -ENOBUFS || err == -ENOENT) {
15245 genlmsg_cancel(skb, hdr);
15246 break;
15247 } else if (err <= 0) {
15248 genlmsg_cancel(skb, hdr);
15249 goto out;
15250 }
15251
15252 genlmsg_end(skb, hdr);
15253 }
15254
15255 err = skb->len;
15256 out:
15257 rtnl_unlock();
15258 return err;
15259 }
15260
__cfg80211_alloc_reply_skb(struct wiphy * wiphy,enum nl80211_commands cmd,enum nl80211_attrs attr,int approxlen)15261 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
15262 enum nl80211_commands cmd,
15263 enum nl80211_attrs attr,
15264 int approxlen)
15265 {
15266 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15267
15268 if (WARN_ON(!rdev->cur_cmd_info))
15269 return NULL;
15270
15271 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
15272 rdev->cur_cmd_info->snd_portid,
15273 rdev->cur_cmd_info->snd_seq,
15274 cmd, attr, NULL, GFP_KERNEL);
15275 }
15276 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
15277
cfg80211_vendor_cmd_reply(struct sk_buff * skb)15278 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
15279 {
15280 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
15281 void *hdr = ((void **)skb->cb)[1];
15282 struct nlattr *data = ((void **)skb->cb)[2];
15283
15284 /* clear CB data for netlink core to own from now on */
15285 memset(skb->cb, 0, sizeof(skb->cb));
15286
15287 if (WARN_ON(!rdev->cur_cmd_info)) {
15288 kfree_skb(skb);
15289 return -EINVAL;
15290 }
15291
15292 nla_nest_end(skb, data);
15293 genlmsg_end(skb, hdr);
15294 return genlmsg_reply(skb, rdev->cur_cmd_info);
15295 }
15296 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
15297
cfg80211_vendor_cmd_get_sender(struct wiphy * wiphy)15298 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
15299 {
15300 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15301
15302 if (WARN_ON(!rdev->cur_cmd_info))
15303 return 0;
15304
15305 return rdev->cur_cmd_info->snd_portid;
15306 }
15307 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15308
nl80211_set_qos_map(struct sk_buff * skb,struct genl_info * info)15309 static int nl80211_set_qos_map(struct sk_buff *skb,
15310 struct genl_info *info)
15311 {
15312 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15313 struct cfg80211_qos_map *qos_map = NULL;
15314 struct net_device *dev = info->user_ptr[1];
15315 u8 *pos, len, num_des, des_len, des;
15316 int ret;
15317
15318 if (!rdev->ops->set_qos_map)
15319 return -EOPNOTSUPP;
15320
15321 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15322 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15323 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15324
15325 if (len % 2)
15326 return -EINVAL;
15327
15328 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15329 if (!qos_map)
15330 return -ENOMEM;
15331
15332 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15333 if (num_des) {
15334 des_len = num_des *
15335 sizeof(struct cfg80211_dscp_exception);
15336 memcpy(qos_map->dscp_exception, pos, des_len);
15337 qos_map->num_des = num_des;
15338 for (des = 0; des < num_des; des++) {
15339 if (qos_map->dscp_exception[des].up > 7) {
15340 kfree(qos_map);
15341 return -EINVAL;
15342 }
15343 }
15344 pos += des_len;
15345 }
15346 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15347 }
15348
15349 wdev_lock(dev->ieee80211_ptr);
15350 ret = nl80211_key_allowed(dev->ieee80211_ptr);
15351 if (!ret)
15352 ret = rdev_set_qos_map(rdev, dev, qos_map);
15353 wdev_unlock(dev->ieee80211_ptr);
15354
15355 kfree(qos_map);
15356 return ret;
15357 }
15358
nl80211_add_tx_ts(struct sk_buff * skb,struct genl_info * info)15359 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15360 {
15361 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15362 struct net_device *dev = info->user_ptr[1];
15363 struct wireless_dev *wdev = dev->ieee80211_ptr;
15364 const u8 *peer;
15365 u8 tsid, up;
15366 u16 admitted_time = 0;
15367 int err;
15368
15369 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15370 return -EOPNOTSUPP;
15371
15372 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15373 !info->attrs[NL80211_ATTR_USER_PRIO])
15374 return -EINVAL;
15375
15376 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15377 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15378
15379 /* WMM uses TIDs 0-7 even for TSPEC */
15380 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15381 /* TODO: handle 802.11 TSPEC/admission control
15382 * need more attributes for that (e.g. BA session requirement);
15383 * change the WMM adminssion test above to allow both then
15384 */
15385 return -EINVAL;
15386 }
15387
15388 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15389
15390 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15391 admitted_time =
15392 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15393 if (!admitted_time)
15394 return -EINVAL;
15395 }
15396
15397 wdev_lock(wdev);
15398 switch (wdev->iftype) {
15399 case NL80211_IFTYPE_STATION:
15400 case NL80211_IFTYPE_P2P_CLIENT:
15401 if (wdev->connected)
15402 break;
15403 err = -ENOTCONN;
15404 goto out;
15405 default:
15406 err = -EOPNOTSUPP;
15407 goto out;
15408 }
15409
15410 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15411
15412 out:
15413 wdev_unlock(wdev);
15414 return err;
15415 }
15416
nl80211_del_tx_ts(struct sk_buff * skb,struct genl_info * info)15417 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15418 {
15419 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15420 struct net_device *dev = info->user_ptr[1];
15421 struct wireless_dev *wdev = dev->ieee80211_ptr;
15422 const u8 *peer;
15423 u8 tsid;
15424 int err;
15425
15426 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15427 return -EINVAL;
15428
15429 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15430 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15431
15432 wdev_lock(wdev);
15433 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15434 wdev_unlock(wdev);
15435
15436 return err;
15437 }
15438
nl80211_tdls_channel_switch(struct sk_buff * skb,struct genl_info * info)15439 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15440 struct genl_info *info)
15441 {
15442 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15443 struct net_device *dev = info->user_ptr[1];
15444 struct wireless_dev *wdev = dev->ieee80211_ptr;
15445 struct cfg80211_chan_def chandef = {};
15446 const u8 *addr;
15447 u8 oper_class;
15448 int err;
15449
15450 if (!rdev->ops->tdls_channel_switch ||
15451 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15452 return -EOPNOTSUPP;
15453
15454 switch (dev->ieee80211_ptr->iftype) {
15455 case NL80211_IFTYPE_STATION:
15456 case NL80211_IFTYPE_P2P_CLIENT:
15457 break;
15458 default:
15459 return -EOPNOTSUPP;
15460 }
15461
15462 if (!info->attrs[NL80211_ATTR_MAC] ||
15463 !info->attrs[NL80211_ATTR_OPER_CLASS])
15464 return -EINVAL;
15465
15466 err = nl80211_parse_chandef(rdev, info, &chandef);
15467 if (err)
15468 return err;
15469
15470 /*
15471 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15472 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15473 * specification is not defined for them.
15474 */
15475 if (chandef.chan->band == NL80211_BAND_2GHZ &&
15476 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15477 chandef.width != NL80211_CHAN_WIDTH_20)
15478 return -EINVAL;
15479
15480 /* we will be active on the TDLS link */
15481 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15482 wdev->iftype))
15483 return -EINVAL;
15484
15485 /* don't allow switching to DFS channels */
15486 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15487 return -EINVAL;
15488
15489 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15490 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15491
15492 wdev_lock(wdev);
15493 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15494 wdev_unlock(wdev);
15495
15496 return err;
15497 }
15498
nl80211_tdls_cancel_channel_switch(struct sk_buff * skb,struct genl_info * info)15499 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15500 struct genl_info *info)
15501 {
15502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15503 struct net_device *dev = info->user_ptr[1];
15504 struct wireless_dev *wdev = dev->ieee80211_ptr;
15505 const u8 *addr;
15506
15507 if (!rdev->ops->tdls_channel_switch ||
15508 !rdev->ops->tdls_cancel_channel_switch ||
15509 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15510 return -EOPNOTSUPP;
15511
15512 switch (dev->ieee80211_ptr->iftype) {
15513 case NL80211_IFTYPE_STATION:
15514 case NL80211_IFTYPE_P2P_CLIENT:
15515 break;
15516 default:
15517 return -EOPNOTSUPP;
15518 }
15519
15520 if (!info->attrs[NL80211_ATTR_MAC])
15521 return -EINVAL;
15522
15523 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15524
15525 wdev_lock(wdev);
15526 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15527 wdev_unlock(wdev);
15528
15529 return 0;
15530 }
15531
nl80211_set_multicast_to_unicast(struct sk_buff * skb,struct genl_info * info)15532 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15533 struct genl_info *info)
15534 {
15535 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15536 struct net_device *dev = info->user_ptr[1];
15537 struct wireless_dev *wdev = dev->ieee80211_ptr;
15538 const struct nlattr *nla;
15539 bool enabled;
15540
15541 if (!rdev->ops->set_multicast_to_unicast)
15542 return -EOPNOTSUPP;
15543
15544 if (wdev->iftype != NL80211_IFTYPE_AP &&
15545 wdev->iftype != NL80211_IFTYPE_P2P_GO)
15546 return -EOPNOTSUPP;
15547
15548 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15549 enabled = nla_get_flag(nla);
15550
15551 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15552 }
15553
nl80211_set_pmk(struct sk_buff * skb,struct genl_info * info)15554 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15555 {
15556 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15557 struct net_device *dev = info->user_ptr[1];
15558 struct wireless_dev *wdev = dev->ieee80211_ptr;
15559 struct cfg80211_pmk_conf pmk_conf = {};
15560 int ret;
15561
15562 if (wdev->iftype != NL80211_IFTYPE_STATION &&
15563 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15564 return -EOPNOTSUPP;
15565
15566 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15567 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15568 return -EOPNOTSUPP;
15569
15570 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15571 return -EINVAL;
15572
15573 wdev_lock(wdev);
15574 if (!wdev->connected) {
15575 ret = -ENOTCONN;
15576 goto out;
15577 }
15578
15579 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15580 if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15581 ret = -EINVAL;
15582 goto out;
15583 }
15584
15585 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15586 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15587 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15588 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15589 ret = -EINVAL;
15590 goto out;
15591 }
15592
15593 if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15594 pmk_conf.pmk_r0_name =
15595 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15596
15597 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15598 out:
15599 wdev_unlock(wdev);
15600 return ret;
15601 }
15602
nl80211_del_pmk(struct sk_buff * skb,struct genl_info * info)15603 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15604 {
15605 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15606 struct net_device *dev = info->user_ptr[1];
15607 struct wireless_dev *wdev = dev->ieee80211_ptr;
15608 const u8 *aa;
15609 int ret;
15610
15611 if (wdev->iftype != NL80211_IFTYPE_STATION &&
15612 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15613 return -EOPNOTSUPP;
15614
15615 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15616 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15617 return -EOPNOTSUPP;
15618
15619 if (!info->attrs[NL80211_ATTR_MAC])
15620 return -EINVAL;
15621
15622 wdev_lock(wdev);
15623 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15624 ret = rdev_del_pmk(rdev, dev, aa);
15625 wdev_unlock(wdev);
15626
15627 return ret;
15628 }
15629
nl80211_external_auth(struct sk_buff * skb,struct genl_info * info)15630 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15631 {
15632 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15633 struct net_device *dev = info->user_ptr[1];
15634 struct cfg80211_external_auth_params params;
15635
15636 if (!rdev->ops->external_auth)
15637 return -EOPNOTSUPP;
15638
15639 if (!info->attrs[NL80211_ATTR_SSID] &&
15640 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15641 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15642 return -EINVAL;
15643
15644 if (!info->attrs[NL80211_ATTR_BSSID])
15645 return -EINVAL;
15646
15647 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15648 return -EINVAL;
15649
15650 memset(¶ms, 0, sizeof(params));
15651
15652 if (info->attrs[NL80211_ATTR_SSID]) {
15653 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15654 if (params.ssid.ssid_len == 0)
15655 return -EINVAL;
15656 memcpy(params.ssid.ssid,
15657 nla_data(info->attrs[NL80211_ATTR_SSID]),
15658 params.ssid.ssid_len);
15659 }
15660
15661 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15662 ETH_ALEN);
15663
15664 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15665
15666 if (info->attrs[NL80211_ATTR_PMKID])
15667 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15668
15669 return rdev_external_auth(rdev, dev, ¶ms);
15670 }
15671
nl80211_tx_control_port(struct sk_buff * skb,struct genl_info * info)15672 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15673 {
15674 bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15675 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15676 struct net_device *dev = info->user_ptr[1];
15677 struct wireless_dev *wdev = dev->ieee80211_ptr;
15678 const u8 *buf;
15679 size_t len;
15680 u8 *dest;
15681 u16 proto;
15682 bool noencrypt;
15683 u64 cookie = 0;
15684 int link_id;
15685 int err;
15686
15687 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15688 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15689 return -EOPNOTSUPP;
15690
15691 if (!rdev->ops->tx_control_port)
15692 return -EOPNOTSUPP;
15693
15694 if (!info->attrs[NL80211_ATTR_FRAME] ||
15695 !info->attrs[NL80211_ATTR_MAC] ||
15696 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15697 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15698 return -EINVAL;
15699 }
15700
15701 wdev_lock(wdev);
15702
15703 switch (wdev->iftype) {
15704 case NL80211_IFTYPE_AP:
15705 case NL80211_IFTYPE_P2P_GO:
15706 case NL80211_IFTYPE_MESH_POINT:
15707 break;
15708 case NL80211_IFTYPE_ADHOC:
15709 if (wdev->u.ibss.current_bss)
15710 break;
15711 err = -ENOTCONN;
15712 goto out;
15713 case NL80211_IFTYPE_STATION:
15714 case NL80211_IFTYPE_P2P_CLIENT:
15715 if (wdev->connected)
15716 break;
15717 err = -ENOTCONN;
15718 goto out;
15719 default:
15720 err = -EOPNOTSUPP;
15721 goto out;
15722 }
15723
15724 wdev_unlock(wdev);
15725
15726 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15727 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15728 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15729 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15730 noencrypt =
15731 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15732
15733 link_id = nl80211_link_id_or_invalid(info->attrs);
15734
15735 err = rdev_tx_control_port(rdev, dev, buf, len,
15736 dest, cpu_to_be16(proto), noencrypt, link_id,
15737 dont_wait_for_ack ? NULL : &cookie);
15738 if (!err && !dont_wait_for_ack)
15739 nl_set_extack_cookie_u64(info->extack, cookie);
15740 return err;
15741 out:
15742 wdev_unlock(wdev);
15743 return err;
15744 }
15745
nl80211_get_ftm_responder_stats(struct sk_buff * skb,struct genl_info * info)15746 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15747 struct genl_info *info)
15748 {
15749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15750 struct net_device *dev = info->user_ptr[1];
15751 struct wireless_dev *wdev = dev->ieee80211_ptr;
15752 struct cfg80211_ftm_responder_stats ftm_stats = {};
15753 unsigned int link_id = nl80211_link_id(info->attrs);
15754 struct sk_buff *msg;
15755 void *hdr;
15756 struct nlattr *ftm_stats_attr;
15757 int err;
15758
15759 if (wdev->iftype != NL80211_IFTYPE_AP ||
15760 !wdev->links[link_id].ap.beacon_interval)
15761 return -EOPNOTSUPP;
15762
15763 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15764 if (err)
15765 return err;
15766
15767 if (!ftm_stats.filled)
15768 return -ENODATA;
15769
15770 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15771 if (!msg)
15772 return -ENOMEM;
15773
15774 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15775 NL80211_CMD_GET_FTM_RESPONDER_STATS);
15776 if (!hdr)
15777 goto nla_put_failure;
15778
15779 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15780 goto nla_put_failure;
15781
15782 ftm_stats_attr = nla_nest_start_noflag(msg,
15783 NL80211_ATTR_FTM_RESPONDER_STATS);
15784 if (!ftm_stats_attr)
15785 goto nla_put_failure;
15786
15787 #define SET_FTM(field, name, type) \
15788 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15789 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
15790 ftm_stats.field)) \
15791 goto nla_put_failure; } while (0)
15792 #define SET_FTM_U64(field, name) \
15793 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15794 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
15795 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
15796 goto nla_put_failure; } while (0)
15797
15798 SET_FTM(success_num, SUCCESS_NUM, u32);
15799 SET_FTM(partial_num, PARTIAL_NUM, u32);
15800 SET_FTM(failed_num, FAILED_NUM, u32);
15801 SET_FTM(asap_num, ASAP_NUM, u32);
15802 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15803 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15804 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15805 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15806 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15807 #undef SET_FTM
15808
15809 nla_nest_end(msg, ftm_stats_attr);
15810
15811 genlmsg_end(msg, hdr);
15812 return genlmsg_reply(msg, info);
15813
15814 nla_put_failure:
15815 nlmsg_free(msg);
15816 return -ENOBUFS;
15817 }
15818
nl80211_update_owe_info(struct sk_buff * skb,struct genl_info * info)15819 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15820 {
15821 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15822 struct cfg80211_update_owe_info owe_info;
15823 struct net_device *dev = info->user_ptr[1];
15824
15825 if (!rdev->ops->update_owe_info)
15826 return -EOPNOTSUPP;
15827
15828 if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15829 !info->attrs[NL80211_ATTR_MAC])
15830 return -EINVAL;
15831
15832 memset(&owe_info, 0, sizeof(owe_info));
15833 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15834 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15835
15836 if (info->attrs[NL80211_ATTR_IE]) {
15837 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15838 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15839 }
15840
15841 return rdev_update_owe_info(rdev, dev, &owe_info);
15842 }
15843
nl80211_probe_mesh_link(struct sk_buff * skb,struct genl_info * info)15844 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15845 {
15846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15847 struct net_device *dev = info->user_ptr[1];
15848 struct wireless_dev *wdev = dev->ieee80211_ptr;
15849 struct station_info sinfo = {};
15850 const u8 *buf;
15851 size_t len;
15852 u8 *dest;
15853 int err;
15854
15855 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15856 return -EOPNOTSUPP;
15857
15858 if (!info->attrs[NL80211_ATTR_MAC] ||
15859 !info->attrs[NL80211_ATTR_FRAME]) {
15860 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15861 return -EINVAL;
15862 }
15863
15864 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15865 return -EOPNOTSUPP;
15866
15867 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15868 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15869 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15870
15871 if (len < sizeof(struct ethhdr))
15872 return -EINVAL;
15873
15874 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15875 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15876 return -EINVAL;
15877
15878 err = rdev_get_station(rdev, dev, dest, &sinfo);
15879 if (err)
15880 return err;
15881
15882 cfg80211_sinfo_release_content(&sinfo);
15883
15884 return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15885 }
15886
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)15887 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15888 struct nlattr *attrs[], struct net_device *dev,
15889 struct cfg80211_tid_cfg *tid_conf,
15890 struct genl_info *info, const u8 *peer,
15891 unsigned int link_id)
15892 {
15893 struct netlink_ext_ack *extack = info->extack;
15894 u64 mask;
15895 int err;
15896
15897 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15898 return -EINVAL;
15899
15900 tid_conf->config_override =
15901 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15902 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15903
15904 if (tid_conf->config_override) {
15905 if (rdev->ops->reset_tid_config) {
15906 err = rdev_reset_tid_config(rdev, dev, peer,
15907 tid_conf->tids);
15908 if (err)
15909 return err;
15910 } else {
15911 return -EINVAL;
15912 }
15913 }
15914
15915 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15916 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15917 tid_conf->noack =
15918 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15919 }
15920
15921 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15922 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15923 tid_conf->retry_short =
15924 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15925
15926 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15927 return -EINVAL;
15928 }
15929
15930 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15931 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15932 tid_conf->retry_long =
15933 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15934
15935 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15936 return -EINVAL;
15937 }
15938
15939 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15940 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15941 tid_conf->ampdu =
15942 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15943 }
15944
15945 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15946 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15947 tid_conf->rtscts =
15948 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15949 }
15950
15951 if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15952 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15953 tid_conf->amsdu =
15954 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15955 }
15956
15957 if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15958 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15959
15960 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15961
15962 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15963 attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15964 err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15965 &tid_conf->txrate_mask, dev,
15966 true, link_id);
15967 if (err)
15968 return err;
15969
15970 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15971 }
15972 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15973 }
15974
15975 if (peer)
15976 mask = rdev->wiphy.tid_config_support.peer;
15977 else
15978 mask = rdev->wiphy.tid_config_support.vif;
15979
15980 if (tid_conf->mask & ~mask) {
15981 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15982 return -ENOTSUPP;
15983 }
15984
15985 return 0;
15986 }
15987
nl80211_set_tid_config(struct sk_buff * skb,struct genl_info * info)15988 static int nl80211_set_tid_config(struct sk_buff *skb,
15989 struct genl_info *info)
15990 {
15991 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15992 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15993 unsigned int link_id = nl80211_link_id(info->attrs);
15994 struct net_device *dev = info->user_ptr[1];
15995 struct cfg80211_tid_config *tid_config;
15996 struct nlattr *tid;
15997 int conf_idx = 0, rem_conf;
15998 int ret = -EINVAL;
15999 u32 num_conf = 0;
16000
16001 if (!info->attrs[NL80211_ATTR_TID_CONFIG])
16002 return -EINVAL;
16003
16004 if (!rdev->ops->set_tid_config)
16005 return -EOPNOTSUPP;
16006
16007 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
16008 rem_conf)
16009 num_conf++;
16010
16011 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
16012 GFP_KERNEL);
16013 if (!tid_config)
16014 return -ENOMEM;
16015
16016 tid_config->n_tid_conf = num_conf;
16017
16018 if (info->attrs[NL80211_ATTR_MAC])
16019 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
16020
16021 wdev_lock(dev->ieee80211_ptr);
16022
16023 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
16024 rem_conf) {
16025 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
16026 tid, NULL, NULL);
16027
16028 if (ret)
16029 goto bad_tid_conf;
16030
16031 ret = parse_tid_conf(rdev, attrs, dev,
16032 &tid_config->tid_conf[conf_idx],
16033 info, tid_config->peer, link_id);
16034 if (ret)
16035 goto bad_tid_conf;
16036
16037 conf_idx++;
16038 }
16039
16040 ret = rdev_set_tid_config(rdev, dev, tid_config);
16041
16042 bad_tid_conf:
16043 kfree(tid_config);
16044 wdev_unlock(dev->ieee80211_ptr);
16045 return ret;
16046 }
16047
nl80211_color_change(struct sk_buff * skb,struct genl_info * info)16048 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
16049 {
16050 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16051 struct cfg80211_color_change_settings params = {};
16052 struct net_device *dev = info->user_ptr[1];
16053 struct wireless_dev *wdev = dev->ieee80211_ptr;
16054 struct nlattr **tb;
16055 u16 offset;
16056 int err;
16057
16058 if (!rdev->ops->color_change)
16059 return -EOPNOTSUPP;
16060
16061 if (!wiphy_ext_feature_isset(&rdev->wiphy,
16062 NL80211_EXT_FEATURE_BSS_COLOR))
16063 return -EOPNOTSUPP;
16064
16065 if (wdev->iftype != NL80211_IFTYPE_AP)
16066 return -EOPNOTSUPP;
16067
16068 if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
16069 !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
16070 !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
16071 return -EINVAL;
16072
16073 params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
16074 params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
16075
16076 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_next,
16077 info->extack);
16078 if (err)
16079 return err;
16080
16081 tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
16082 if (!tb)
16083 return -ENOMEM;
16084
16085 err = nla_parse_nested(tb, NL80211_ATTR_MAX,
16086 info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
16087 nl80211_policy, info->extack);
16088 if (err)
16089 goto out;
16090
16091 err = nl80211_parse_beacon(rdev, tb, ¶ms.beacon_color_change,
16092 info->extack);
16093 if (err)
16094 goto out;
16095
16096 if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
16097 err = -EINVAL;
16098 goto out;
16099 }
16100
16101 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
16102 err = -EINVAL;
16103 goto out;
16104 }
16105
16106 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
16107 if (offset >= params.beacon_color_change.tail_len) {
16108 err = -EINVAL;
16109 goto out;
16110 }
16111
16112 if (params.beacon_color_change.tail[offset] != params.count) {
16113 err = -EINVAL;
16114 goto out;
16115 }
16116
16117 params.counter_offset_beacon = offset;
16118
16119 if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
16120 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
16121 sizeof(u16)) {
16122 err = -EINVAL;
16123 goto out;
16124 }
16125
16126 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
16127 if (offset >= params.beacon_color_change.probe_resp_len) {
16128 err = -EINVAL;
16129 goto out;
16130 }
16131
16132 if (params.beacon_color_change.probe_resp[offset] !=
16133 params.count) {
16134 err = -EINVAL;
16135 goto out;
16136 }
16137
16138 params.counter_offset_presp = offset;
16139 }
16140
16141 wdev_lock(wdev);
16142 err = rdev_color_change(rdev, dev, ¶ms);
16143 wdev_unlock(wdev);
16144
16145 out:
16146 kfree(params.beacon_next.mbssid_ies);
16147 kfree(params.beacon_color_change.mbssid_ies);
16148 kfree(params.beacon_next.rnr_ies);
16149 kfree(params.beacon_color_change.rnr_ies);
16150 kfree(tb);
16151 return err;
16152 }
16153
nl80211_set_fils_aad(struct sk_buff * skb,struct genl_info * info)16154 static int nl80211_set_fils_aad(struct sk_buff *skb,
16155 struct genl_info *info)
16156 {
16157 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16158 struct net_device *dev = info->user_ptr[1];
16159 struct cfg80211_fils_aad fils_aad = {};
16160 u8 *nonces;
16161
16162 if (!info->attrs[NL80211_ATTR_MAC] ||
16163 !info->attrs[NL80211_ATTR_FILS_KEK] ||
16164 !info->attrs[NL80211_ATTR_FILS_NONCES])
16165 return -EINVAL;
16166
16167 fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16168 fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
16169 fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
16170 nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
16171 fils_aad.snonce = nonces;
16172 fils_aad.anonce = nonces + FILS_NONCE_LEN;
16173
16174 return rdev_set_fils_aad(rdev, dev, &fils_aad);
16175 }
16176
nl80211_add_link(struct sk_buff * skb,struct genl_info * info)16177 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
16178 {
16179 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16180 unsigned int link_id = nl80211_link_id(info->attrs);
16181 struct net_device *dev = info->user_ptr[1];
16182 struct wireless_dev *wdev = dev->ieee80211_ptr;
16183 int ret;
16184
16185 if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
16186 return -EINVAL;
16187
16188 switch (wdev->iftype) {
16189 case NL80211_IFTYPE_AP:
16190 break;
16191 default:
16192 return -EINVAL;
16193 }
16194
16195 if (!info->attrs[NL80211_ATTR_MAC] ||
16196 !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
16197 return -EINVAL;
16198
16199 wdev_lock(wdev);
16200 wdev->valid_links |= BIT(link_id);
16201 ether_addr_copy(wdev->links[link_id].addr,
16202 nla_data(info->attrs[NL80211_ATTR_MAC]));
16203
16204 ret = rdev_add_intf_link(rdev, wdev, link_id);
16205 if (ret) {
16206 wdev->valid_links &= ~BIT(link_id);
16207 eth_zero_addr(wdev->links[link_id].addr);
16208 }
16209 wdev_unlock(wdev);
16210
16211 return ret;
16212 }
16213
nl80211_remove_link(struct sk_buff * skb,struct genl_info * info)16214 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
16215 {
16216 unsigned int link_id = nl80211_link_id(info->attrs);
16217 struct net_device *dev = info->user_ptr[1];
16218 struct wireless_dev *wdev = dev->ieee80211_ptr;
16219
16220 /* cannot remove if there's no link */
16221 if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16222 return -EINVAL;
16223
16224 switch (wdev->iftype) {
16225 case NL80211_IFTYPE_AP:
16226 break;
16227 default:
16228 return -EINVAL;
16229 }
16230
16231 wdev_lock(wdev);
16232 cfg80211_remove_link(wdev, link_id);
16233 wdev_unlock(wdev);
16234
16235 return 0;
16236 }
16237
16238 static int
nl80211_add_mod_link_station(struct sk_buff * skb,struct genl_info * info,bool add)16239 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
16240 bool add)
16241 {
16242 struct link_station_parameters params = {};
16243 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16244 struct net_device *dev = info->user_ptr[1];
16245 int err;
16246
16247 if ((add && !rdev->ops->add_link_station) ||
16248 (!add && !rdev->ops->mod_link_station))
16249 return -EOPNOTSUPP;
16250
16251 if (add && !info->attrs[NL80211_ATTR_MAC])
16252 return -EINVAL;
16253
16254 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
16255 return -EINVAL;
16256
16257 if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
16258 return -EINVAL;
16259
16260 params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16261
16262 if (info->attrs[NL80211_ATTR_MAC]) {
16263 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
16264 if (!is_valid_ether_addr(params.link_mac))
16265 return -EINVAL;
16266 }
16267
16268 if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16269 return -EINVAL;
16270
16271 params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16272
16273 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
16274 params.supported_rates =
16275 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16276 params.supported_rates_len =
16277 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16278 }
16279
16280 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
16281 params.ht_capa =
16282 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
16283
16284 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
16285 params.vht_capa =
16286 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
16287
16288 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
16289 params.he_capa =
16290 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16291 params.he_capa_len =
16292 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16293
16294 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
16295 params.eht_capa =
16296 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16297 params.eht_capa_len =
16298 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16299
16300 if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
16301 (const u8 *)params.eht_capa,
16302 params.eht_capa_len,
16303 false))
16304 return -EINVAL;
16305 }
16306 }
16307
16308 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
16309 params.he_6ghz_capa =
16310 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
16311
16312 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16313 params.opmode_notif_used = true;
16314 params.opmode_notif =
16315 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16316 }
16317
16318 err = nl80211_parse_sta_txpower_setting(info, ¶ms.txpwr,
16319 ¶ms.txpwr_set);
16320 if (err)
16321 return err;
16322
16323 wdev_lock(dev->ieee80211_ptr);
16324 if (add)
16325 err = rdev_add_link_station(rdev, dev, ¶ms);
16326 else
16327 err = rdev_mod_link_station(rdev, dev, ¶ms);
16328 wdev_unlock(dev->ieee80211_ptr);
16329
16330 return err;
16331 }
16332
16333 static int
nl80211_add_link_station(struct sk_buff * skb,struct genl_info * info)16334 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16335 {
16336 return nl80211_add_mod_link_station(skb, info, true);
16337 }
16338
16339 static int
nl80211_modify_link_station(struct sk_buff * skb,struct genl_info * info)16340 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16341 {
16342 return nl80211_add_mod_link_station(skb, info, false);
16343 }
16344
16345 static int
nl80211_remove_link_station(struct sk_buff * skb,struct genl_info * info)16346 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16347 {
16348 struct link_station_del_parameters params = {};
16349 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16350 struct net_device *dev = info->user_ptr[1];
16351 int ret;
16352
16353 if (!rdev->ops->del_link_station)
16354 return -EOPNOTSUPP;
16355
16356 if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16357 !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16358 return -EINVAL;
16359
16360 params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16361 params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16362
16363 wdev_lock(dev->ieee80211_ptr);
16364 ret = rdev_del_link_station(rdev, dev, ¶ms);
16365 wdev_unlock(dev->ieee80211_ptr);
16366
16367 return ret;
16368 }
16369
nl80211_set_hw_timestamp(struct sk_buff * skb,struct genl_info * info)16370 static int nl80211_set_hw_timestamp(struct sk_buff *skb,
16371 struct genl_info *info)
16372 {
16373 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16374 struct net_device *dev = info->user_ptr[1];
16375 struct cfg80211_set_hw_timestamp hwts = {};
16376
16377 if (!rdev->wiphy.hw_timestamp_max_peers)
16378 return -EOPNOTSUPP;
16379
16380 if (!info->attrs[NL80211_ATTR_MAC] &&
16381 rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS)
16382 return -EOPNOTSUPP;
16383
16384 if (info->attrs[NL80211_ATTR_MAC])
16385 hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16386
16387 hwts.enable =
16388 nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]);
16389
16390 return rdev_set_hw_timestamp(rdev, dev, &hwts);
16391 }
16392
16393 #define NL80211_FLAG_NEED_WIPHY 0x01
16394 #define NL80211_FLAG_NEED_NETDEV 0x02
16395 #define NL80211_FLAG_NEED_RTNL 0x04
16396 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
16397 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
16398 NL80211_FLAG_CHECK_NETDEV_UP)
16399 #define NL80211_FLAG_NEED_WDEV 0x10
16400 /* If a netdev is associated, it must be UP, P2P must be started */
16401 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
16402 NL80211_FLAG_CHECK_NETDEV_UP)
16403 #define NL80211_FLAG_CLEAR_SKB 0x20
16404 #define NL80211_FLAG_NO_WIPHY_MTX 0x40
16405 #define NL80211_FLAG_MLO_VALID_LINK_ID 0x80
16406 #define NL80211_FLAG_MLO_UNSUPPORTED 0x100
16407
16408 #define INTERNAL_FLAG_SELECTORS(__sel) \
16409 SELECTOR(__sel, NONE, 0) /* must be first */ \
16410 SELECTOR(__sel, WIPHY, \
16411 NL80211_FLAG_NEED_WIPHY) \
16412 SELECTOR(__sel, WDEV, \
16413 NL80211_FLAG_NEED_WDEV) \
16414 SELECTOR(__sel, NETDEV, \
16415 NL80211_FLAG_NEED_NETDEV) \
16416 SELECTOR(__sel, NETDEV_LINK, \
16417 NL80211_FLAG_NEED_NETDEV | \
16418 NL80211_FLAG_MLO_VALID_LINK_ID) \
16419 SELECTOR(__sel, NETDEV_NO_MLO, \
16420 NL80211_FLAG_NEED_NETDEV | \
16421 NL80211_FLAG_MLO_UNSUPPORTED) \
16422 SELECTOR(__sel, WIPHY_RTNL, \
16423 NL80211_FLAG_NEED_WIPHY | \
16424 NL80211_FLAG_NEED_RTNL) \
16425 SELECTOR(__sel, WIPHY_RTNL_NOMTX, \
16426 NL80211_FLAG_NEED_WIPHY | \
16427 NL80211_FLAG_NEED_RTNL | \
16428 NL80211_FLAG_NO_WIPHY_MTX) \
16429 SELECTOR(__sel, WDEV_RTNL, \
16430 NL80211_FLAG_NEED_WDEV | \
16431 NL80211_FLAG_NEED_RTNL) \
16432 SELECTOR(__sel, NETDEV_RTNL, \
16433 NL80211_FLAG_NEED_NETDEV | \
16434 NL80211_FLAG_NEED_RTNL) \
16435 SELECTOR(__sel, NETDEV_UP, \
16436 NL80211_FLAG_NEED_NETDEV_UP) \
16437 SELECTOR(__sel, NETDEV_UP_LINK, \
16438 NL80211_FLAG_NEED_NETDEV_UP | \
16439 NL80211_FLAG_MLO_VALID_LINK_ID) \
16440 SELECTOR(__sel, NETDEV_UP_NO_MLO, \
16441 NL80211_FLAG_NEED_NETDEV_UP | \
16442 NL80211_FLAG_MLO_UNSUPPORTED) \
16443 SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR, \
16444 NL80211_FLAG_NEED_NETDEV_UP | \
16445 NL80211_FLAG_CLEAR_SKB | \
16446 NL80211_FLAG_MLO_UNSUPPORTED) \
16447 SELECTOR(__sel, NETDEV_UP_NOTMX, \
16448 NL80211_FLAG_NEED_NETDEV_UP | \
16449 NL80211_FLAG_NO_WIPHY_MTX) \
16450 SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO, \
16451 NL80211_FLAG_NEED_NETDEV_UP | \
16452 NL80211_FLAG_NO_WIPHY_MTX | \
16453 NL80211_FLAG_MLO_UNSUPPORTED) \
16454 SELECTOR(__sel, NETDEV_UP_CLEAR, \
16455 NL80211_FLAG_NEED_NETDEV_UP | \
16456 NL80211_FLAG_CLEAR_SKB) \
16457 SELECTOR(__sel, WDEV_UP, \
16458 NL80211_FLAG_NEED_WDEV_UP) \
16459 SELECTOR(__sel, WDEV_UP_LINK, \
16460 NL80211_FLAG_NEED_WDEV_UP | \
16461 NL80211_FLAG_MLO_VALID_LINK_ID) \
16462 SELECTOR(__sel, WDEV_UP_RTNL, \
16463 NL80211_FLAG_NEED_WDEV_UP | \
16464 NL80211_FLAG_NEED_RTNL) \
16465 SELECTOR(__sel, WIPHY_CLEAR, \
16466 NL80211_FLAG_NEED_WIPHY | \
16467 NL80211_FLAG_CLEAR_SKB)
16468
16469 enum nl80211_internal_flags_selector {
16470 #define SELECTOR(_, name, value) NL80211_IFL_SEL_##name,
16471 INTERNAL_FLAG_SELECTORS(_)
16472 #undef SELECTOR
16473 };
16474
16475 static u32 nl80211_internal_flags[] = {
16476 #define SELECTOR(_, name, value) [NL80211_IFL_SEL_##name] = value,
16477 INTERNAL_FLAG_SELECTORS(_)
16478 #undef SELECTOR
16479 };
16480
nl80211_pre_doit(const struct genl_split_ops * ops,struct sk_buff * skb,struct genl_info * info)16481 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16482 struct sk_buff *skb,
16483 struct genl_info *info)
16484 {
16485 struct cfg80211_registered_device *rdev = NULL;
16486 struct wireless_dev *wdev = NULL;
16487 struct net_device *dev = NULL;
16488 u32 internal_flags;
16489 int err;
16490
16491 if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16492 return -EINVAL;
16493
16494 internal_flags = nl80211_internal_flags[ops->internal_flags];
16495
16496 rtnl_lock();
16497 if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16498 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16499 if (IS_ERR(rdev)) {
16500 err = PTR_ERR(rdev);
16501 goto out_unlock;
16502 }
16503 info->user_ptr[0] = rdev;
16504 } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16505 internal_flags & NL80211_FLAG_NEED_WDEV) {
16506 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16507 info->attrs);
16508 if (IS_ERR(wdev)) {
16509 err = PTR_ERR(wdev);
16510 goto out_unlock;
16511 }
16512
16513 dev = wdev->netdev;
16514 dev_hold(dev);
16515 rdev = wiphy_to_rdev(wdev->wiphy);
16516
16517 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16518 if (!dev) {
16519 err = -EINVAL;
16520 goto out_unlock;
16521 }
16522
16523 info->user_ptr[1] = dev;
16524 } else {
16525 info->user_ptr[1] = wdev;
16526 }
16527
16528 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16529 !wdev_running(wdev)) {
16530 err = -ENETDOWN;
16531 goto out_unlock;
16532 }
16533
16534 info->user_ptr[0] = rdev;
16535 }
16536
16537 if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16538 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16539
16540 if (!wdev) {
16541 err = -EINVAL;
16542 goto out_unlock;
16543 }
16544
16545 /* MLO -> require valid link ID */
16546 if (wdev->valid_links &&
16547 (!link_id ||
16548 !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16549 err = -EINVAL;
16550 goto out_unlock;
16551 }
16552
16553 /* non-MLO -> no link ID attribute accepted */
16554 if (!wdev->valid_links && link_id) {
16555 err = -EINVAL;
16556 goto out_unlock;
16557 }
16558 }
16559
16560 if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16561 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16562 (wdev && wdev->valid_links)) {
16563 err = -EINVAL;
16564 goto out_unlock;
16565 }
16566 }
16567
16568 if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16569 wiphy_lock(&rdev->wiphy);
16570 /* we keep the mutex locked until post_doit */
16571 __release(&rdev->wiphy.mtx);
16572 }
16573 if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16574 rtnl_unlock();
16575
16576 return 0;
16577 out_unlock:
16578 rtnl_unlock();
16579 dev_put(dev);
16580 return err;
16581 }
16582
nl80211_post_doit(const struct genl_split_ops * ops,struct sk_buff * skb,struct genl_info * info)16583 static void nl80211_post_doit(const struct genl_split_ops *ops,
16584 struct sk_buff *skb,
16585 struct genl_info *info)
16586 {
16587 u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16588
16589 if (info->user_ptr[1]) {
16590 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16591 struct wireless_dev *wdev = info->user_ptr[1];
16592
16593 dev_put(wdev->netdev);
16594 } else {
16595 dev_put(info->user_ptr[1]);
16596 }
16597 }
16598
16599 if (info->user_ptr[0] &&
16600 !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16601 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16602
16603 /* we kept the mutex locked since pre_doit */
16604 __acquire(&rdev->wiphy.mtx);
16605 wiphy_unlock(&rdev->wiphy);
16606 }
16607
16608 if (internal_flags & NL80211_FLAG_NEED_RTNL)
16609 rtnl_unlock();
16610
16611 /* If needed, clear the netlink message payload from the SKB
16612 * as it might contain key data that shouldn't stick around on
16613 * the heap after the SKB is freed. The netlink message header
16614 * is still needed for further processing, so leave it intact.
16615 */
16616 if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16617 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16618
16619 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16620 }
16621 }
16622
nl80211_set_sar_sub_specs(struct cfg80211_registered_device * rdev,struct cfg80211_sar_specs * sar_specs,struct nlattr * spec[],int index)16623 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16624 struct cfg80211_sar_specs *sar_specs,
16625 struct nlattr *spec[], int index)
16626 {
16627 u32 range_index, i;
16628
16629 if (!sar_specs || !spec)
16630 return -EINVAL;
16631
16632 if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16633 !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16634 return -EINVAL;
16635
16636 range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16637
16638 /* check if range_index exceeds num_freq_ranges */
16639 if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16640 return -EINVAL;
16641
16642 /* check if range_index duplicates */
16643 for (i = 0; i < index; i++) {
16644 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16645 return -EINVAL;
16646 }
16647
16648 sar_specs->sub_specs[index].power =
16649 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16650
16651 sar_specs->sub_specs[index].freq_range_index = range_index;
16652
16653 return 0;
16654 }
16655
nl80211_set_sar_specs(struct sk_buff * skb,struct genl_info * info)16656 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16657 {
16658 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16659 struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16660 struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16661 struct cfg80211_sar_specs *sar_spec;
16662 enum nl80211_sar_type type;
16663 struct nlattr *spec_list;
16664 u32 specs;
16665 int rem, err;
16666
16667 if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16668 return -EOPNOTSUPP;
16669
16670 if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16671 return -EINVAL;
16672
16673 nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16674 info->attrs[NL80211_ATTR_SAR_SPEC],
16675 NULL, NULL);
16676
16677 if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16678 return -EINVAL;
16679
16680 type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16681 if (type != rdev->wiphy.sar_capa->type)
16682 return -EINVAL;
16683
16684 specs = 0;
16685 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16686 specs++;
16687
16688 if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16689 return -EINVAL;
16690
16691 sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16692 if (!sar_spec)
16693 return -ENOMEM;
16694
16695 sar_spec->type = type;
16696 specs = 0;
16697 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16698 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16699 spec_list, NULL, NULL);
16700
16701 switch (type) {
16702 case NL80211_SAR_TYPE_POWER:
16703 if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16704 spec, specs)) {
16705 err = -EINVAL;
16706 goto error;
16707 }
16708 break;
16709 default:
16710 err = -EINVAL;
16711 goto error;
16712 }
16713 specs++;
16714 }
16715
16716 sar_spec->num_sub_specs = specs;
16717
16718 rdev->cur_cmd_info = info;
16719 err = rdev_set_sar_specs(rdev, sar_spec);
16720 rdev->cur_cmd_info = NULL;
16721 error:
16722 kfree(sar_spec);
16723 return err;
16724 }
16725
16726 #define SELECTOR(__sel, name, value) \
16727 ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16728 int __missing_selector(void);
16729 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16730
16731 static const struct genl_ops nl80211_ops[] = {
16732 {
16733 .cmd = NL80211_CMD_GET_WIPHY,
16734 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16735 .doit = nl80211_get_wiphy,
16736 .dumpit = nl80211_dump_wiphy,
16737 .done = nl80211_dump_wiphy_done,
16738 /* can be retrieved by unprivileged users */
16739 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16740 },
16741 };
16742
16743 static const struct genl_small_ops nl80211_small_ops[] = {
16744 {
16745 .cmd = NL80211_CMD_SET_WIPHY,
16746 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16747 .doit = nl80211_set_wiphy,
16748 .flags = GENL_UNS_ADMIN_PERM,
16749 },
16750 {
16751 .cmd = NL80211_CMD_GET_INTERFACE,
16752 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16753 .doit = nl80211_get_interface,
16754 .dumpit = nl80211_dump_interface,
16755 /* can be retrieved by unprivileged users */
16756 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16757 },
16758 {
16759 .cmd = NL80211_CMD_SET_INTERFACE,
16760 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16761 .doit = nl80211_set_interface,
16762 .flags = GENL_UNS_ADMIN_PERM,
16763 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16764 NL80211_FLAG_NEED_RTNL),
16765 },
16766 {
16767 .cmd = NL80211_CMD_NEW_INTERFACE,
16768 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16769 .doit = nl80211_new_interface,
16770 .flags = GENL_UNS_ADMIN_PERM,
16771 .internal_flags =
16772 IFLAGS(NL80211_FLAG_NEED_WIPHY |
16773 NL80211_FLAG_NEED_RTNL |
16774 /* we take the wiphy mutex later ourselves */
16775 NL80211_FLAG_NO_WIPHY_MTX),
16776 },
16777 {
16778 .cmd = NL80211_CMD_DEL_INTERFACE,
16779 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16780 .doit = nl80211_del_interface,
16781 .flags = GENL_UNS_ADMIN_PERM,
16782 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16783 NL80211_FLAG_NEED_RTNL),
16784 },
16785 {
16786 .cmd = NL80211_CMD_GET_KEY,
16787 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16788 .doit = nl80211_get_key,
16789 .flags = GENL_UNS_ADMIN_PERM,
16790 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16791 },
16792 {
16793 .cmd = NL80211_CMD_SET_KEY,
16794 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16795 .doit = nl80211_set_key,
16796 .flags = GENL_UNS_ADMIN_PERM,
16797 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16798 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16799 NL80211_FLAG_CLEAR_SKB),
16800 },
16801 {
16802 .cmd = NL80211_CMD_NEW_KEY,
16803 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16804 .doit = nl80211_new_key,
16805 .flags = GENL_UNS_ADMIN_PERM,
16806 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16807 NL80211_FLAG_CLEAR_SKB),
16808 },
16809 {
16810 .cmd = NL80211_CMD_DEL_KEY,
16811 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16812 .doit = nl80211_del_key,
16813 .flags = GENL_UNS_ADMIN_PERM,
16814 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16815 },
16816 {
16817 .cmd = NL80211_CMD_SET_BEACON,
16818 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16819 .flags = GENL_UNS_ADMIN_PERM,
16820 .doit = nl80211_set_beacon,
16821 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16822 NL80211_FLAG_MLO_VALID_LINK_ID),
16823 },
16824 {
16825 .cmd = NL80211_CMD_START_AP,
16826 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16827 .flags = GENL_UNS_ADMIN_PERM,
16828 .doit = nl80211_start_ap,
16829 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16830 NL80211_FLAG_MLO_VALID_LINK_ID),
16831 },
16832 {
16833 .cmd = NL80211_CMD_STOP_AP,
16834 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16835 .flags = GENL_UNS_ADMIN_PERM,
16836 .doit = nl80211_stop_ap,
16837 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16838 NL80211_FLAG_MLO_VALID_LINK_ID),
16839 },
16840 {
16841 .cmd = NL80211_CMD_GET_STATION,
16842 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16843 .doit = nl80211_get_station,
16844 .dumpit = nl80211_dump_station,
16845 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16846 },
16847 {
16848 .cmd = NL80211_CMD_SET_STATION,
16849 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16850 .doit = nl80211_set_station,
16851 .flags = GENL_UNS_ADMIN_PERM,
16852 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16853 },
16854 {
16855 .cmd = NL80211_CMD_NEW_STATION,
16856 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16857 .doit = nl80211_new_station,
16858 .flags = GENL_UNS_ADMIN_PERM,
16859 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16860 },
16861 {
16862 .cmd = NL80211_CMD_DEL_STATION,
16863 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16864 .doit = nl80211_del_station,
16865 .flags = GENL_UNS_ADMIN_PERM,
16866 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16867 },
16868 {
16869 .cmd = NL80211_CMD_GET_MPATH,
16870 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16871 .doit = nl80211_get_mpath,
16872 .dumpit = nl80211_dump_mpath,
16873 .flags = GENL_UNS_ADMIN_PERM,
16874 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16875 },
16876 {
16877 .cmd = NL80211_CMD_GET_MPP,
16878 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16879 .doit = nl80211_get_mpp,
16880 .dumpit = nl80211_dump_mpp,
16881 .flags = GENL_UNS_ADMIN_PERM,
16882 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16883 },
16884 {
16885 .cmd = NL80211_CMD_SET_MPATH,
16886 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16887 .doit = nl80211_set_mpath,
16888 .flags = GENL_UNS_ADMIN_PERM,
16889 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16890 },
16891 {
16892 .cmd = NL80211_CMD_NEW_MPATH,
16893 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16894 .doit = nl80211_new_mpath,
16895 .flags = GENL_UNS_ADMIN_PERM,
16896 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16897 },
16898 {
16899 .cmd = NL80211_CMD_DEL_MPATH,
16900 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16901 .doit = nl80211_del_mpath,
16902 .flags = GENL_UNS_ADMIN_PERM,
16903 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16904 },
16905 {
16906 .cmd = NL80211_CMD_SET_BSS,
16907 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16908 .doit = nl80211_set_bss,
16909 .flags = GENL_UNS_ADMIN_PERM,
16910 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16911 NL80211_FLAG_MLO_VALID_LINK_ID),
16912 },
16913 {
16914 .cmd = NL80211_CMD_GET_REG,
16915 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16916 .doit = nl80211_get_reg_do,
16917 .dumpit = nl80211_get_reg_dump,
16918 /* can be retrieved by unprivileged users */
16919 },
16920 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16921 {
16922 .cmd = NL80211_CMD_SET_REG,
16923 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16924 .doit = nl80211_set_reg,
16925 .flags = GENL_ADMIN_PERM,
16926 },
16927 #endif
16928 {
16929 .cmd = NL80211_CMD_REQ_SET_REG,
16930 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16931 .doit = nl80211_req_set_reg,
16932 .flags = GENL_ADMIN_PERM,
16933 },
16934 {
16935 .cmd = NL80211_CMD_RELOAD_REGDB,
16936 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16937 .doit = nl80211_reload_regdb,
16938 .flags = GENL_ADMIN_PERM,
16939 },
16940 {
16941 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16942 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16943 .doit = nl80211_get_mesh_config,
16944 /* can be retrieved by unprivileged users */
16945 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16946 },
16947 {
16948 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16949 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16950 .doit = nl80211_update_mesh_config,
16951 .flags = GENL_UNS_ADMIN_PERM,
16952 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16953 },
16954 {
16955 .cmd = NL80211_CMD_TRIGGER_SCAN,
16956 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16957 .doit = nl80211_trigger_scan,
16958 .flags = GENL_UNS_ADMIN_PERM,
16959 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16960 },
16961 {
16962 .cmd = NL80211_CMD_ABORT_SCAN,
16963 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16964 .doit = nl80211_abort_scan,
16965 .flags = GENL_UNS_ADMIN_PERM,
16966 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16967 },
16968 {
16969 .cmd = NL80211_CMD_GET_SCAN,
16970 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16971 .dumpit = nl80211_dump_scan,
16972 },
16973 {
16974 .cmd = NL80211_CMD_START_SCHED_SCAN,
16975 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16976 .doit = nl80211_start_sched_scan,
16977 .flags = GENL_UNS_ADMIN_PERM,
16978 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16979 },
16980 {
16981 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16982 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16983 .doit = nl80211_stop_sched_scan,
16984 .flags = GENL_UNS_ADMIN_PERM,
16985 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16986 },
16987 {
16988 .cmd = NL80211_CMD_AUTHENTICATE,
16989 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16990 .doit = nl80211_authenticate,
16991 .flags = GENL_UNS_ADMIN_PERM,
16992 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16993 NL80211_FLAG_CLEAR_SKB),
16994 },
16995 {
16996 .cmd = NL80211_CMD_ASSOCIATE,
16997 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16998 .doit = nl80211_associate,
16999 .flags = GENL_UNS_ADMIN_PERM,
17000 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17001 NL80211_FLAG_CLEAR_SKB),
17002 },
17003 {
17004 .cmd = NL80211_CMD_DEAUTHENTICATE,
17005 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17006 .doit = nl80211_deauthenticate,
17007 .flags = GENL_UNS_ADMIN_PERM,
17008 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17009 },
17010 {
17011 .cmd = NL80211_CMD_DISASSOCIATE,
17012 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17013 .doit = nl80211_disassociate,
17014 .flags = GENL_UNS_ADMIN_PERM,
17015 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17016 },
17017 {
17018 .cmd = NL80211_CMD_JOIN_IBSS,
17019 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17020 .doit = nl80211_join_ibss,
17021 .flags = GENL_UNS_ADMIN_PERM,
17022 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17023 },
17024 {
17025 .cmd = NL80211_CMD_LEAVE_IBSS,
17026 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17027 .doit = nl80211_leave_ibss,
17028 .flags = GENL_UNS_ADMIN_PERM,
17029 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17030 },
17031 #ifdef CONFIG_NL80211_TESTMODE
17032 {
17033 .cmd = NL80211_CMD_TESTMODE,
17034 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17035 .doit = nl80211_testmode_do,
17036 .dumpit = nl80211_testmode_dump,
17037 .flags = GENL_UNS_ADMIN_PERM,
17038 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17039 },
17040 #endif
17041 {
17042 .cmd = NL80211_CMD_CONNECT,
17043 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17044 .doit = nl80211_connect,
17045 .flags = GENL_UNS_ADMIN_PERM,
17046 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17047 NL80211_FLAG_CLEAR_SKB),
17048 },
17049 {
17050 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
17051 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17052 .doit = nl80211_update_connect_params,
17053 .flags = GENL_ADMIN_PERM,
17054 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17055 NL80211_FLAG_CLEAR_SKB),
17056 },
17057 {
17058 .cmd = NL80211_CMD_DISCONNECT,
17059 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17060 .doit = nl80211_disconnect,
17061 .flags = GENL_UNS_ADMIN_PERM,
17062 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17063 },
17064 {
17065 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
17066 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17067 .doit = nl80211_wiphy_netns,
17068 .flags = GENL_UNS_ADMIN_PERM,
17069 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17070 NL80211_FLAG_NEED_RTNL |
17071 NL80211_FLAG_NO_WIPHY_MTX),
17072 },
17073 {
17074 .cmd = NL80211_CMD_GET_SURVEY,
17075 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17076 .dumpit = nl80211_dump_survey,
17077 },
17078 {
17079 .cmd = NL80211_CMD_SET_PMKSA,
17080 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17081 .doit = nl80211_setdel_pmksa,
17082 .flags = GENL_UNS_ADMIN_PERM,
17083 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17084 NL80211_FLAG_CLEAR_SKB),
17085 },
17086 {
17087 .cmd = NL80211_CMD_DEL_PMKSA,
17088 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17089 .doit = nl80211_setdel_pmksa,
17090 .flags = GENL_UNS_ADMIN_PERM,
17091 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17092 },
17093 {
17094 .cmd = NL80211_CMD_FLUSH_PMKSA,
17095 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17096 .doit = nl80211_flush_pmksa,
17097 .flags = GENL_UNS_ADMIN_PERM,
17098 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17099 },
17100 {
17101 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
17102 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17103 .doit = nl80211_remain_on_channel,
17104 .flags = GENL_UNS_ADMIN_PERM,
17105 /* FIXME: requiring a link ID here is probably not good */
17106 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17107 NL80211_FLAG_MLO_VALID_LINK_ID),
17108 },
17109 {
17110 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
17111 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17112 .doit = nl80211_cancel_remain_on_channel,
17113 .flags = GENL_UNS_ADMIN_PERM,
17114 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17115 },
17116 {
17117 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
17118 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17119 .doit = nl80211_set_tx_bitrate_mask,
17120 .flags = GENL_UNS_ADMIN_PERM,
17121 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17122 NL80211_FLAG_MLO_VALID_LINK_ID),
17123 },
17124 {
17125 .cmd = NL80211_CMD_REGISTER_FRAME,
17126 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17127 .doit = nl80211_register_mgmt,
17128 .flags = GENL_UNS_ADMIN_PERM,
17129 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
17130 },
17131 {
17132 .cmd = NL80211_CMD_FRAME,
17133 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17134 .doit = nl80211_tx_mgmt,
17135 .flags = GENL_UNS_ADMIN_PERM,
17136 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17137 },
17138 {
17139 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
17140 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17141 .doit = nl80211_tx_mgmt_cancel_wait,
17142 .flags = GENL_UNS_ADMIN_PERM,
17143 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17144 },
17145 {
17146 .cmd = NL80211_CMD_SET_POWER_SAVE,
17147 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17148 .doit = nl80211_set_power_save,
17149 .flags = GENL_UNS_ADMIN_PERM,
17150 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17151 },
17152 {
17153 .cmd = NL80211_CMD_GET_POWER_SAVE,
17154 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17155 .doit = nl80211_get_power_save,
17156 /* can be retrieved by unprivileged users */
17157 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17158 },
17159 {
17160 .cmd = NL80211_CMD_SET_CQM,
17161 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17162 .doit = nl80211_set_cqm,
17163 .flags = GENL_UNS_ADMIN_PERM,
17164 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17165 },
17166 {
17167 .cmd = NL80211_CMD_SET_CHANNEL,
17168 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17169 .doit = nl80211_set_channel,
17170 .flags = GENL_UNS_ADMIN_PERM,
17171 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17172 NL80211_FLAG_MLO_VALID_LINK_ID),
17173 },
17174 {
17175 .cmd = NL80211_CMD_JOIN_MESH,
17176 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17177 .doit = nl80211_join_mesh,
17178 .flags = GENL_UNS_ADMIN_PERM,
17179 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17180 },
17181 {
17182 .cmd = NL80211_CMD_LEAVE_MESH,
17183 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17184 .doit = nl80211_leave_mesh,
17185 .flags = GENL_UNS_ADMIN_PERM,
17186 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17187 },
17188 {
17189 .cmd = NL80211_CMD_JOIN_OCB,
17190 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17191 .doit = nl80211_join_ocb,
17192 .flags = GENL_UNS_ADMIN_PERM,
17193 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17194 },
17195 {
17196 .cmd = NL80211_CMD_LEAVE_OCB,
17197 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17198 .doit = nl80211_leave_ocb,
17199 .flags = GENL_UNS_ADMIN_PERM,
17200 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17201 },
17202 #ifdef CONFIG_PM
17203 {
17204 .cmd = NL80211_CMD_GET_WOWLAN,
17205 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17206 .doit = nl80211_get_wowlan,
17207 /* can be retrieved by unprivileged users */
17208 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17209 },
17210 {
17211 .cmd = NL80211_CMD_SET_WOWLAN,
17212 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17213 .doit = nl80211_set_wowlan,
17214 .flags = GENL_UNS_ADMIN_PERM,
17215 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17216 },
17217 #endif
17218 {
17219 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
17220 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17221 .doit = nl80211_set_rekey_data,
17222 .flags = GENL_UNS_ADMIN_PERM,
17223 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17224 NL80211_FLAG_CLEAR_SKB),
17225 },
17226 {
17227 .cmd = NL80211_CMD_TDLS_MGMT,
17228 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17229 .doit = nl80211_tdls_mgmt,
17230 .flags = GENL_UNS_ADMIN_PERM,
17231 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17232 NL80211_FLAG_MLO_VALID_LINK_ID),
17233 },
17234 {
17235 .cmd = NL80211_CMD_TDLS_OPER,
17236 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17237 .doit = nl80211_tdls_oper,
17238 .flags = GENL_UNS_ADMIN_PERM,
17239 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17240 },
17241 {
17242 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
17243 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17244 .doit = nl80211_register_unexpected_frame,
17245 .flags = GENL_UNS_ADMIN_PERM,
17246 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17247 },
17248 {
17249 .cmd = NL80211_CMD_PROBE_CLIENT,
17250 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17251 .doit = nl80211_probe_client,
17252 .flags = GENL_UNS_ADMIN_PERM,
17253 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17254 },
17255 {
17256 .cmd = NL80211_CMD_REGISTER_BEACONS,
17257 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17258 .doit = nl80211_register_beacons,
17259 .flags = GENL_UNS_ADMIN_PERM,
17260 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17261 },
17262 {
17263 .cmd = NL80211_CMD_SET_NOACK_MAP,
17264 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17265 .doit = nl80211_set_noack_map,
17266 .flags = GENL_UNS_ADMIN_PERM,
17267 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17268 },
17269 {
17270 .cmd = NL80211_CMD_START_P2P_DEVICE,
17271 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17272 .doit = nl80211_start_p2p_device,
17273 .flags = GENL_UNS_ADMIN_PERM,
17274 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17275 NL80211_FLAG_NEED_RTNL),
17276 },
17277 {
17278 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
17279 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17280 .doit = nl80211_stop_p2p_device,
17281 .flags = GENL_UNS_ADMIN_PERM,
17282 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17283 NL80211_FLAG_NEED_RTNL),
17284 },
17285 {
17286 .cmd = NL80211_CMD_START_NAN,
17287 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17288 .doit = nl80211_start_nan,
17289 .flags = GENL_ADMIN_PERM,
17290 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17291 NL80211_FLAG_NEED_RTNL),
17292 },
17293 {
17294 .cmd = NL80211_CMD_STOP_NAN,
17295 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17296 .doit = nl80211_stop_nan,
17297 .flags = GENL_ADMIN_PERM,
17298 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17299 NL80211_FLAG_NEED_RTNL),
17300 },
17301 {
17302 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
17303 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17304 .doit = nl80211_nan_add_func,
17305 .flags = GENL_ADMIN_PERM,
17306 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17307 },
17308 {
17309 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
17310 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17311 .doit = nl80211_nan_del_func,
17312 .flags = GENL_ADMIN_PERM,
17313 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17314 },
17315 {
17316 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
17317 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17318 .doit = nl80211_nan_change_config,
17319 .flags = GENL_ADMIN_PERM,
17320 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17321 },
17322 {
17323 .cmd = NL80211_CMD_SET_MCAST_RATE,
17324 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17325 .doit = nl80211_set_mcast_rate,
17326 .flags = GENL_UNS_ADMIN_PERM,
17327 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17328 },
17329 {
17330 .cmd = NL80211_CMD_SET_MAC_ACL,
17331 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17332 .doit = nl80211_set_mac_acl,
17333 .flags = GENL_UNS_ADMIN_PERM,
17334 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17335 NL80211_FLAG_MLO_UNSUPPORTED),
17336 },
17337 {
17338 .cmd = NL80211_CMD_RADAR_DETECT,
17339 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17340 .doit = nl80211_start_radar_detection,
17341 .flags = GENL_UNS_ADMIN_PERM,
17342 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17343 NL80211_FLAG_NO_WIPHY_MTX |
17344 NL80211_FLAG_MLO_UNSUPPORTED),
17345 },
17346 {
17347 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17348 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17349 .doit = nl80211_get_protocol_features,
17350 },
17351 {
17352 .cmd = NL80211_CMD_UPDATE_FT_IES,
17353 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17354 .doit = nl80211_update_ft_ies,
17355 .flags = GENL_UNS_ADMIN_PERM,
17356 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17357 },
17358 {
17359 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17360 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17361 .doit = nl80211_crit_protocol_start,
17362 .flags = GENL_UNS_ADMIN_PERM,
17363 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17364 },
17365 {
17366 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17367 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17368 .doit = nl80211_crit_protocol_stop,
17369 .flags = GENL_UNS_ADMIN_PERM,
17370 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17371 },
17372 {
17373 .cmd = NL80211_CMD_GET_COALESCE,
17374 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17375 .doit = nl80211_get_coalesce,
17376 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17377 },
17378 {
17379 .cmd = NL80211_CMD_SET_COALESCE,
17380 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17381 .doit = nl80211_set_coalesce,
17382 .flags = GENL_UNS_ADMIN_PERM,
17383 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17384 },
17385 {
17386 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17387 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17388 .doit = nl80211_channel_switch,
17389 .flags = GENL_UNS_ADMIN_PERM,
17390 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17391 NL80211_FLAG_MLO_VALID_LINK_ID),
17392 },
17393 {
17394 .cmd = NL80211_CMD_VENDOR,
17395 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17396 .doit = nl80211_vendor_cmd,
17397 .dumpit = nl80211_vendor_cmd_dump,
17398 .flags = GENL_UNS_ADMIN_PERM,
17399 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17400 NL80211_FLAG_CLEAR_SKB),
17401 },
17402 {
17403 .cmd = NL80211_CMD_SET_QOS_MAP,
17404 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17405 .doit = nl80211_set_qos_map,
17406 .flags = GENL_UNS_ADMIN_PERM,
17407 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17408 },
17409 {
17410 .cmd = NL80211_CMD_ADD_TX_TS,
17411 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17412 .doit = nl80211_add_tx_ts,
17413 .flags = GENL_UNS_ADMIN_PERM,
17414 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17415 NL80211_FLAG_MLO_UNSUPPORTED),
17416 },
17417 {
17418 .cmd = NL80211_CMD_DEL_TX_TS,
17419 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17420 .doit = nl80211_del_tx_ts,
17421 .flags = GENL_UNS_ADMIN_PERM,
17422 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17423 },
17424 {
17425 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17426 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17427 .doit = nl80211_tdls_channel_switch,
17428 .flags = GENL_UNS_ADMIN_PERM,
17429 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17430 },
17431 {
17432 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17433 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17434 .doit = nl80211_tdls_cancel_channel_switch,
17435 .flags = GENL_UNS_ADMIN_PERM,
17436 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17437 },
17438 {
17439 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17440 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17441 .doit = nl80211_set_multicast_to_unicast,
17442 .flags = GENL_UNS_ADMIN_PERM,
17443 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17444 },
17445 {
17446 .cmd = NL80211_CMD_SET_PMK,
17447 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17448 .doit = nl80211_set_pmk,
17449 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17450 NL80211_FLAG_CLEAR_SKB),
17451 },
17452 {
17453 .cmd = NL80211_CMD_DEL_PMK,
17454 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17455 .doit = nl80211_del_pmk,
17456 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17457 },
17458 {
17459 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17460 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17461 .doit = nl80211_external_auth,
17462 .flags = GENL_ADMIN_PERM,
17463 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17464 },
17465 {
17466 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17467 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17468 .doit = nl80211_tx_control_port,
17469 .flags = GENL_UNS_ADMIN_PERM,
17470 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17471 },
17472 {
17473 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17474 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17475 .doit = nl80211_get_ftm_responder_stats,
17476 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17477 NL80211_FLAG_MLO_VALID_LINK_ID),
17478 },
17479 {
17480 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17481 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17482 .doit = nl80211_pmsr_start,
17483 .flags = GENL_UNS_ADMIN_PERM,
17484 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17485 },
17486 {
17487 .cmd = NL80211_CMD_NOTIFY_RADAR,
17488 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17489 .doit = nl80211_notify_radar_detection,
17490 .flags = GENL_UNS_ADMIN_PERM,
17491 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17492 },
17493 {
17494 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17495 .doit = nl80211_update_owe_info,
17496 .flags = GENL_ADMIN_PERM,
17497 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17498 },
17499 {
17500 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17501 .doit = nl80211_probe_mesh_link,
17502 .flags = GENL_UNS_ADMIN_PERM,
17503 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17504 },
17505 {
17506 .cmd = NL80211_CMD_SET_TID_CONFIG,
17507 .doit = nl80211_set_tid_config,
17508 .flags = GENL_UNS_ADMIN_PERM,
17509 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17510 NL80211_FLAG_MLO_VALID_LINK_ID),
17511 },
17512 {
17513 .cmd = NL80211_CMD_SET_SAR_SPECS,
17514 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17515 .doit = nl80211_set_sar_specs,
17516 .flags = GENL_UNS_ADMIN_PERM,
17517 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17518 NL80211_FLAG_NEED_RTNL),
17519 },
17520 {
17521 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17522 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17523 .doit = nl80211_color_change,
17524 .flags = GENL_UNS_ADMIN_PERM,
17525 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17526 },
17527 {
17528 .cmd = NL80211_CMD_SET_FILS_AAD,
17529 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17530 .doit = nl80211_set_fils_aad,
17531 .flags = GENL_UNS_ADMIN_PERM,
17532 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17533 },
17534 {
17535 .cmd = NL80211_CMD_ADD_LINK,
17536 .doit = nl80211_add_link,
17537 .flags = GENL_UNS_ADMIN_PERM,
17538 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17539 },
17540 {
17541 .cmd = NL80211_CMD_REMOVE_LINK,
17542 .doit = nl80211_remove_link,
17543 .flags = GENL_UNS_ADMIN_PERM,
17544 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17545 NL80211_FLAG_MLO_VALID_LINK_ID),
17546 },
17547 {
17548 .cmd = NL80211_CMD_ADD_LINK_STA,
17549 .doit = nl80211_add_link_station,
17550 .flags = GENL_UNS_ADMIN_PERM,
17551 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17552 NL80211_FLAG_MLO_VALID_LINK_ID),
17553 },
17554 {
17555 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17556 .doit = nl80211_modify_link_station,
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_REMOVE_LINK_STA,
17563 .doit = nl80211_remove_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_SET_HW_TIMESTAMP,
17570 .doit = nl80211_set_hw_timestamp,
17571 .flags = GENL_UNS_ADMIN_PERM,
17572 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17573 },
17574 };
17575
17576 static struct genl_family nl80211_fam __ro_after_init = {
17577 .name = NL80211_GENL_NAME, /* have users key off the name instead */
17578 .hdrsize = 0, /* no private header */
17579 .version = 1, /* no particular meaning now */
17580 .maxattr = NL80211_ATTR_MAX,
17581 .policy = nl80211_policy,
17582 .netnsok = true,
17583 .pre_doit = nl80211_pre_doit,
17584 .post_doit = nl80211_post_doit,
17585 .module = THIS_MODULE,
17586 .ops = nl80211_ops,
17587 .n_ops = ARRAY_SIZE(nl80211_ops),
17588 .small_ops = nl80211_small_ops,
17589 .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17590 .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17591 .mcgrps = nl80211_mcgrps,
17592 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17593 .parallel_ops = true,
17594 };
17595
17596 /* notification functions */
17597
nl80211_notify_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd)17598 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17599 enum nl80211_commands cmd)
17600 {
17601 struct sk_buff *msg;
17602 struct nl80211_dump_wiphy_state state = {};
17603
17604 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17605 cmd != NL80211_CMD_DEL_WIPHY);
17606
17607 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17608 if (!msg)
17609 return;
17610
17611 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17612 nlmsg_free(msg);
17613 return;
17614 }
17615
17616 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17617 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17618 }
17619
nl80211_notify_iface(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)17620 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17621 struct wireless_dev *wdev,
17622 enum nl80211_commands cmd)
17623 {
17624 struct sk_buff *msg;
17625
17626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17627 if (!msg)
17628 return;
17629
17630 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17631 nlmsg_free(msg);
17632 return;
17633 }
17634
17635 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17636 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17637 }
17638
nl80211_add_scan_req(struct sk_buff * msg,struct cfg80211_registered_device * rdev)17639 static int nl80211_add_scan_req(struct sk_buff *msg,
17640 struct cfg80211_registered_device *rdev)
17641 {
17642 struct cfg80211_scan_request *req = rdev->scan_req;
17643 struct nlattr *nest;
17644 int i;
17645 struct cfg80211_scan_info *info;
17646
17647 if (WARN_ON(!req))
17648 return 0;
17649
17650 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17651 if (!nest)
17652 goto nla_put_failure;
17653 for (i = 0; i < req->n_ssids; i++) {
17654 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17655 goto nla_put_failure;
17656 }
17657 nla_nest_end(msg, nest);
17658
17659 if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17660 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17661 if (!nest)
17662 goto nla_put_failure;
17663 for (i = 0; i < req->n_channels; i++) {
17664 if (nla_put_u32(msg, i,
17665 ieee80211_channel_to_khz(req->channels[i])))
17666 goto nla_put_failure;
17667 }
17668 nla_nest_end(msg, nest);
17669 } else {
17670 nest = nla_nest_start_noflag(msg,
17671 NL80211_ATTR_SCAN_FREQUENCIES);
17672 if (!nest)
17673 goto nla_put_failure;
17674 for (i = 0; i < req->n_channels; i++) {
17675 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17676 goto nla_put_failure;
17677 }
17678 nla_nest_end(msg, nest);
17679 }
17680
17681 if (req->ie &&
17682 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17683 goto nla_put_failure;
17684
17685 if (req->flags &&
17686 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17687 goto nla_put_failure;
17688
17689 info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17690 &rdev->scan_req->info;
17691 if (info->scan_start_tsf &&
17692 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17693 info->scan_start_tsf, NL80211_BSS_PAD) ||
17694 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17695 info->tsf_bssid)))
17696 goto nla_put_failure;
17697
17698 return 0;
17699 nla_put_failure:
17700 return -ENOBUFS;
17701 }
17702
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)17703 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17704 struct cfg80211_registered_device *rdev,
17705 struct wireless_dev *wdev,
17706 u32 portid, u32 seq, int flags,
17707 u32 cmd)
17708 {
17709 void *hdr;
17710
17711 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17712 if (!hdr)
17713 return -1;
17714
17715 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17716 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17717 wdev->netdev->ifindex)) ||
17718 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17719 NL80211_ATTR_PAD))
17720 goto nla_put_failure;
17721
17722 /* ignore errors and send incomplete event anyway */
17723 nl80211_add_scan_req(msg, rdev);
17724
17725 genlmsg_end(msg, hdr);
17726 return 0;
17727
17728 nla_put_failure:
17729 genlmsg_cancel(msg, hdr);
17730 return -EMSGSIZE;
17731 }
17732
17733 static int
nl80211_prep_sched_scan_msg(struct sk_buff * msg,struct cfg80211_sched_scan_request * req,u32 cmd)17734 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17735 struct cfg80211_sched_scan_request *req, u32 cmd)
17736 {
17737 void *hdr;
17738
17739 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17740 if (!hdr)
17741 return -1;
17742
17743 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17744 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17745 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17746 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17747 NL80211_ATTR_PAD))
17748 goto nla_put_failure;
17749
17750 genlmsg_end(msg, hdr);
17751 return 0;
17752
17753 nla_put_failure:
17754 genlmsg_cancel(msg, hdr);
17755 return -EMSGSIZE;
17756 }
17757
nl80211_send_scan_start(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev)17758 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17759 struct wireless_dev *wdev)
17760 {
17761 struct sk_buff *msg;
17762
17763 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17764 if (!msg)
17765 return;
17766
17767 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17768 NL80211_CMD_TRIGGER_SCAN) < 0) {
17769 nlmsg_free(msg);
17770 return;
17771 }
17772
17773 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17774 NL80211_MCGRP_SCAN, GFP_KERNEL);
17775 }
17776
nl80211_build_scan_msg(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,bool aborted)17777 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17778 struct wireless_dev *wdev, bool aborted)
17779 {
17780 struct sk_buff *msg;
17781
17782 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17783 if (!msg)
17784 return NULL;
17785
17786 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17787 aborted ? NL80211_CMD_SCAN_ABORTED :
17788 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17789 nlmsg_free(msg);
17790 return NULL;
17791 }
17792
17793 return msg;
17794 }
17795
17796 /* send message created by nl80211_build_scan_msg() */
nl80211_send_scan_msg(struct cfg80211_registered_device * rdev,struct sk_buff * msg)17797 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17798 struct sk_buff *msg)
17799 {
17800 if (!msg)
17801 return;
17802
17803 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17804 NL80211_MCGRP_SCAN, GFP_KERNEL);
17805 }
17806
nl80211_send_sched_scan(struct cfg80211_sched_scan_request * req,u32 cmd)17807 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17808 {
17809 struct sk_buff *msg;
17810
17811 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17812 if (!msg)
17813 return;
17814
17815 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17816 nlmsg_free(msg);
17817 return;
17818 }
17819
17820 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17821 NL80211_MCGRP_SCAN, GFP_KERNEL);
17822 }
17823
nl80211_reg_change_event_fill(struct sk_buff * msg,struct regulatory_request * request)17824 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17825 struct regulatory_request *request)
17826 {
17827 /* Userspace can always count this one always being set */
17828 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17829 goto nla_put_failure;
17830
17831 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17832 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17833 NL80211_REGDOM_TYPE_WORLD))
17834 goto nla_put_failure;
17835 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17836 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17837 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17838 goto nla_put_failure;
17839 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17840 request->intersect) {
17841 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17842 NL80211_REGDOM_TYPE_INTERSECTION))
17843 goto nla_put_failure;
17844 } else {
17845 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17846 NL80211_REGDOM_TYPE_COUNTRY) ||
17847 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17848 request->alpha2))
17849 goto nla_put_failure;
17850 }
17851
17852 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17853 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17854
17855 if (wiphy &&
17856 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17857 goto nla_put_failure;
17858
17859 if (wiphy &&
17860 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17861 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17862 goto nla_put_failure;
17863 }
17864
17865 return true;
17866
17867 nla_put_failure:
17868 return false;
17869 }
17870
17871 /*
17872 * This can happen on global regulatory changes or device specific settings
17873 * based on custom regulatory domains.
17874 */
nl80211_common_reg_change_event(enum nl80211_commands cmd_id,struct regulatory_request * request)17875 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17876 struct regulatory_request *request)
17877 {
17878 struct sk_buff *msg;
17879 void *hdr;
17880
17881 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17882 if (!msg)
17883 return;
17884
17885 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17886 if (!hdr)
17887 goto nla_put_failure;
17888
17889 if (!nl80211_reg_change_event_fill(msg, request))
17890 goto nla_put_failure;
17891
17892 genlmsg_end(msg, hdr);
17893
17894 rcu_read_lock();
17895 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17896 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17897 rcu_read_unlock();
17898
17899 return;
17900
17901 nla_put_failure:
17902 nlmsg_free(msg);
17903 }
17904
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)17905 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17906 struct net_device *netdev,
17907 const u8 *buf, size_t len,
17908 enum nl80211_commands cmd, gfp_t gfp,
17909 int uapsd_queues, const u8 *req_ies,
17910 size_t req_ies_len, bool reconnect)
17911 {
17912 struct sk_buff *msg;
17913 void *hdr;
17914
17915 msg = nlmsg_new(100 + len + req_ies_len, gfp);
17916 if (!msg)
17917 return;
17918
17919 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17920 if (!hdr) {
17921 nlmsg_free(msg);
17922 return;
17923 }
17924
17925 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17926 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17927 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17928 (req_ies &&
17929 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17930 goto nla_put_failure;
17931
17932 if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17933 goto nla_put_failure;
17934
17935 if (uapsd_queues >= 0) {
17936 struct nlattr *nla_wmm =
17937 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17938 if (!nla_wmm)
17939 goto nla_put_failure;
17940
17941 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17942 uapsd_queues))
17943 goto nla_put_failure;
17944
17945 nla_nest_end(msg, nla_wmm);
17946 }
17947
17948 genlmsg_end(msg, hdr);
17949
17950 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17951 NL80211_MCGRP_MLME, gfp);
17952 return;
17953
17954 nla_put_failure:
17955 nlmsg_free(msg);
17956 }
17957
nl80211_send_rx_auth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)17958 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17959 struct net_device *netdev, const u8 *buf,
17960 size_t len, gfp_t gfp)
17961 {
17962 nl80211_send_mlme_event(rdev, netdev, buf, len,
17963 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17964 false);
17965 }
17966
nl80211_send_rx_assoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_rx_assoc_resp * data)17967 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17968 struct net_device *netdev,
17969 struct cfg80211_rx_assoc_resp *data)
17970 {
17971 nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17972 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17973 data->uapsd_queues,
17974 data->req_ies, data->req_ies_len, false);
17975 }
17976
nl80211_send_deauth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,bool reconnect,gfp_t gfp)17977 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17978 struct net_device *netdev, const u8 *buf,
17979 size_t len, bool reconnect, gfp_t gfp)
17980 {
17981 nl80211_send_mlme_event(rdev, netdev, buf, len,
17982 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17983 reconnect);
17984 }
17985
nl80211_send_disassoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,bool reconnect,gfp_t gfp)17986 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17987 struct net_device *netdev, const u8 *buf,
17988 size_t len, bool reconnect, gfp_t gfp)
17989 {
17990 nl80211_send_mlme_event(rdev, netdev, buf, len,
17991 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17992 reconnect);
17993 }
17994
cfg80211_rx_unprot_mlme_mgmt(struct net_device * dev,const u8 * buf,size_t len)17995 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17996 size_t len)
17997 {
17998 struct wireless_dev *wdev = dev->ieee80211_ptr;
17999 struct wiphy *wiphy = wdev->wiphy;
18000 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18001 const struct ieee80211_mgmt *mgmt = (void *)buf;
18002 u32 cmd;
18003
18004 if (WARN_ON(len < 2))
18005 return;
18006
18007 if (ieee80211_is_deauth(mgmt->frame_control)) {
18008 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
18009 } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
18010 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
18011 } else if (ieee80211_is_beacon(mgmt->frame_control)) {
18012 if (wdev->unprot_beacon_reported &&
18013 elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
18014 return;
18015 cmd = NL80211_CMD_UNPROT_BEACON;
18016 wdev->unprot_beacon_reported = jiffies;
18017 } else {
18018 return;
18019 }
18020
18021 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
18022 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
18023 NULL, 0, false);
18024 }
18025 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
18026
nl80211_send_mlme_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,int cmd,const u8 * addr,gfp_t gfp)18027 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
18028 struct net_device *netdev, int cmd,
18029 const u8 *addr, gfp_t gfp)
18030 {
18031 struct sk_buff *msg;
18032 void *hdr;
18033
18034 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18035 if (!msg)
18036 return;
18037
18038 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18039 if (!hdr) {
18040 nlmsg_free(msg);
18041 return;
18042 }
18043
18044 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18045 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18046 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18047 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18048 goto nla_put_failure;
18049
18050 genlmsg_end(msg, hdr);
18051
18052 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18053 NL80211_MCGRP_MLME, gfp);
18054 return;
18055
18056 nla_put_failure:
18057 nlmsg_free(msg);
18058 }
18059
nl80211_send_auth_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)18060 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
18061 struct net_device *netdev, const u8 *addr,
18062 gfp_t gfp)
18063 {
18064 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
18065 addr, gfp);
18066 }
18067
nl80211_send_assoc_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)18068 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
18069 struct net_device *netdev, const u8 *addr,
18070 gfp_t gfp)
18071 {
18072 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
18073 addr, gfp);
18074 }
18075
nl80211_send_connect_result(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_connect_resp_params * cr,gfp_t gfp)18076 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
18077 struct net_device *netdev,
18078 struct cfg80211_connect_resp_params *cr,
18079 gfp_t gfp)
18080 {
18081 struct sk_buff *msg;
18082 void *hdr;
18083 unsigned int link;
18084 size_t link_info_size = 0;
18085 const u8 *connected_addr = cr->valid_links ?
18086 cr->ap_mld_addr : cr->links[0].bssid;
18087
18088 if (cr->valid_links) {
18089 for_each_valid_link(cr, link) {
18090 /* Nested attribute header */
18091 link_info_size += NLA_HDRLEN;
18092 /* Link ID */
18093 link_info_size += nla_total_size(sizeof(u8));
18094 link_info_size += cr->links[link].addr ?
18095 nla_total_size(ETH_ALEN) : 0;
18096 link_info_size += (cr->links[link].bssid ||
18097 cr->links[link].bss) ?
18098 nla_total_size(ETH_ALEN) : 0;
18099 link_info_size += nla_total_size(sizeof(u16));
18100 }
18101 }
18102
18103 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
18104 cr->fils.kek_len + cr->fils.pmk_len +
18105 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
18106 gfp);
18107 if (!msg)
18108 return;
18109
18110 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
18111 if (!hdr) {
18112 nlmsg_free(msg);
18113 return;
18114 }
18115
18116 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18117 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18118 (connected_addr &&
18119 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
18120 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18121 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
18122 cr->status) ||
18123 (cr->status < 0 &&
18124 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18125 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
18126 cr->timeout_reason))) ||
18127 (cr->req_ie &&
18128 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
18129 (cr->resp_ie &&
18130 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
18131 cr->resp_ie)) ||
18132 (cr->fils.update_erp_next_seq_num &&
18133 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18134 cr->fils.erp_next_seq_num)) ||
18135 (cr->status == WLAN_STATUS_SUCCESS &&
18136 ((cr->fils.kek &&
18137 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
18138 cr->fils.kek)) ||
18139 (cr->fils.pmk &&
18140 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
18141 (cr->fils.pmkid &&
18142 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
18143 goto nla_put_failure;
18144
18145 if (cr->valid_links) {
18146 int i = 1;
18147 struct nlattr *nested;
18148
18149 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18150 if (!nested)
18151 goto nla_put_failure;
18152
18153 for_each_valid_link(cr, link) {
18154 struct nlattr *nested_mlo_links;
18155 const u8 *bssid = cr->links[link].bss ?
18156 cr->links[link].bss->bssid :
18157 cr->links[link].bssid;
18158
18159 nested_mlo_links = nla_nest_start(msg, i);
18160 if (!nested_mlo_links)
18161 goto nla_put_failure;
18162
18163 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18164 (bssid &&
18165 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18166 (cr->links[link].addr &&
18167 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18168 cr->links[link].addr)) ||
18169 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18170 cr->links[link].status))
18171 goto nla_put_failure;
18172
18173 nla_nest_end(msg, nested_mlo_links);
18174 i++;
18175 }
18176 nla_nest_end(msg, nested);
18177 }
18178
18179 genlmsg_end(msg, hdr);
18180
18181 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18182 NL80211_MCGRP_MLME, gfp);
18183 return;
18184
18185 nla_put_failure:
18186 nlmsg_free(msg);
18187 }
18188
nl80211_send_roamed(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_roam_info * info,gfp_t gfp)18189 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
18190 struct net_device *netdev,
18191 struct cfg80211_roam_info *info, gfp_t gfp)
18192 {
18193 struct sk_buff *msg;
18194 void *hdr;
18195 size_t link_info_size = 0;
18196 unsigned int link;
18197 const u8 *connected_addr = info->ap_mld_addr ?
18198 info->ap_mld_addr :
18199 (info->links[0].bss ?
18200 info->links[0].bss->bssid :
18201 info->links[0].bssid);
18202
18203 if (info->valid_links) {
18204 for_each_valid_link(info, link) {
18205 /* Nested attribute header */
18206 link_info_size += NLA_HDRLEN;
18207 /* Link ID */
18208 link_info_size += nla_total_size(sizeof(u8));
18209 link_info_size += info->links[link].addr ?
18210 nla_total_size(ETH_ALEN) : 0;
18211 link_info_size += (info->links[link].bssid ||
18212 info->links[link].bss) ?
18213 nla_total_size(ETH_ALEN) : 0;
18214 }
18215 }
18216
18217 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
18218 info->fils.kek_len + info->fils.pmk_len +
18219 (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
18220 link_info_size, gfp);
18221 if (!msg)
18222 return;
18223
18224 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
18225 if (!hdr) {
18226 nlmsg_free(msg);
18227 return;
18228 }
18229
18230 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18231 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18232 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
18233 (info->req_ie &&
18234 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
18235 info->req_ie)) ||
18236 (info->resp_ie &&
18237 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
18238 info->resp_ie)) ||
18239 (info->fils.update_erp_next_seq_num &&
18240 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18241 info->fils.erp_next_seq_num)) ||
18242 (info->fils.kek &&
18243 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
18244 info->fils.kek)) ||
18245 (info->fils.pmk &&
18246 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
18247 (info->fils.pmkid &&
18248 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
18249 goto nla_put_failure;
18250
18251 if (info->valid_links) {
18252 int i = 1;
18253 struct nlattr *nested;
18254
18255 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18256 if (!nested)
18257 goto nla_put_failure;
18258
18259 for_each_valid_link(info, link) {
18260 struct nlattr *nested_mlo_links;
18261 const u8 *bssid = info->links[link].bss ?
18262 info->links[link].bss->bssid :
18263 info->links[link].bssid;
18264
18265 nested_mlo_links = nla_nest_start(msg, i);
18266 if (!nested_mlo_links)
18267 goto nla_put_failure;
18268
18269 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18270 (bssid &&
18271 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18272 (info->links[link].addr &&
18273 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18274 info->links[link].addr)))
18275 goto nla_put_failure;
18276
18277 nla_nest_end(msg, nested_mlo_links);
18278 i++;
18279 }
18280 nla_nest_end(msg, nested);
18281 }
18282
18283 genlmsg_end(msg, hdr);
18284
18285 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18286 NL80211_MCGRP_MLME, gfp);
18287 return;
18288
18289 nla_put_failure:
18290 nlmsg_free(msg);
18291 }
18292
nl80211_send_port_authorized(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,const u8 * td_bitmap,u8 td_bitmap_len)18293 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
18294 struct net_device *netdev, const u8 *bssid,
18295 const u8 *td_bitmap, u8 td_bitmap_len)
18296 {
18297 struct sk_buff *msg;
18298 void *hdr;
18299
18300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18301 if (!msg)
18302 return;
18303
18304 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
18305 if (!hdr) {
18306 nlmsg_free(msg);
18307 return;
18308 }
18309
18310 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18311 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18312 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18313 goto nla_put_failure;
18314
18315 if ((td_bitmap_len > 0) && td_bitmap)
18316 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
18317 td_bitmap_len, td_bitmap))
18318 goto nla_put_failure;
18319
18320 genlmsg_end(msg, hdr);
18321
18322 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18323 NL80211_MCGRP_MLME, GFP_KERNEL);
18324 return;
18325
18326 nla_put_failure:
18327 nlmsg_free(msg);
18328 }
18329
nl80211_send_disconnected(struct cfg80211_registered_device * rdev,struct net_device * netdev,u16 reason,const u8 * ie,size_t ie_len,bool from_ap)18330 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
18331 struct net_device *netdev, u16 reason,
18332 const u8 *ie, size_t ie_len, bool from_ap)
18333 {
18334 struct sk_buff *msg;
18335 void *hdr;
18336
18337 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
18338 if (!msg)
18339 return;
18340
18341 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18342 if (!hdr) {
18343 nlmsg_free(msg);
18344 return;
18345 }
18346
18347 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18348 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18349 (reason &&
18350 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18351 (from_ap &&
18352 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18353 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18354 goto nla_put_failure;
18355
18356 genlmsg_end(msg, hdr);
18357
18358 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18359 NL80211_MCGRP_MLME, GFP_KERNEL);
18360 return;
18361
18362 nla_put_failure:
18363 nlmsg_free(msg);
18364 }
18365
cfg80211_links_removed(struct net_device * dev,u16 link_mask)18366 void cfg80211_links_removed(struct net_device *dev, u16 link_mask)
18367 {
18368 struct wireless_dev *wdev = dev->ieee80211_ptr;
18369 struct wiphy *wiphy = wdev->wiphy;
18370 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18371 struct sk_buff *msg;
18372 struct nlattr *links;
18373 void *hdr;
18374
18375 ASSERT_WDEV_LOCK(wdev);
18376 trace_cfg80211_links_removed(dev, link_mask);
18377
18378 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
18379 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
18380 return;
18381
18382 if (WARN_ON(!wdev->valid_links || !link_mask ||
18383 (wdev->valid_links & link_mask) != link_mask ||
18384 wdev->valid_links == link_mask))
18385 return;
18386
18387 cfg80211_wdev_release_link_bsses(wdev, link_mask);
18388 wdev->valid_links &= ~link_mask;
18389
18390 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18391 if (!msg)
18392 return;
18393
18394 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED);
18395 if (!hdr) {
18396 nlmsg_free(msg);
18397 return;
18398 }
18399
18400 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18401 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18402 goto nla_put_failure;
18403
18404 links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18405 if (!links)
18406 goto nla_put_failure;
18407
18408 while (link_mask) {
18409 struct nlattr *link;
18410 int link_id = __ffs(link_mask);
18411
18412 link = nla_nest_start(msg, link_id + 1);
18413 if (!link)
18414 goto nla_put_failure;
18415
18416 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18417 goto nla_put_failure;
18418
18419 nla_nest_end(msg, link);
18420 link_mask &= ~(1 << link_id);
18421 }
18422
18423 nla_nest_end(msg, links);
18424
18425 genlmsg_end(msg, hdr);
18426
18427 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18428 NL80211_MCGRP_MLME, GFP_KERNEL);
18429 return;
18430
18431 nla_put_failure:
18432 nlmsg_free(msg);
18433 }
18434 EXPORT_SYMBOL(cfg80211_links_removed);
18435
nl80211_send_ibss_bssid(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,gfp_t gfp)18436 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18437 struct net_device *netdev, const u8 *bssid,
18438 gfp_t gfp)
18439 {
18440 struct sk_buff *msg;
18441 void *hdr;
18442
18443 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18444 if (!msg)
18445 return;
18446
18447 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18448 if (!hdr) {
18449 nlmsg_free(msg);
18450 return;
18451 }
18452
18453 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18454 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18455 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18456 goto nla_put_failure;
18457
18458 genlmsg_end(msg, hdr);
18459
18460 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18461 NL80211_MCGRP_MLME, gfp);
18462 return;
18463
18464 nla_put_failure:
18465 nlmsg_free(msg);
18466 }
18467
cfg80211_notify_new_peer_candidate(struct net_device * dev,const u8 * addr,const u8 * ie,u8 ie_len,int sig_dbm,gfp_t gfp)18468 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18469 const u8 *ie, u8 ie_len,
18470 int sig_dbm, gfp_t gfp)
18471 {
18472 struct wireless_dev *wdev = dev->ieee80211_ptr;
18473 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18474 struct sk_buff *msg;
18475 void *hdr;
18476
18477 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18478 return;
18479
18480 trace_cfg80211_notify_new_peer_candidate(dev, addr);
18481
18482 msg = nlmsg_new(100 + ie_len, gfp);
18483 if (!msg)
18484 return;
18485
18486 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18487 if (!hdr) {
18488 nlmsg_free(msg);
18489 return;
18490 }
18491
18492 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18493 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18494 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18495 (ie_len && ie &&
18496 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18497 (sig_dbm &&
18498 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18499 goto nla_put_failure;
18500
18501 genlmsg_end(msg, hdr);
18502
18503 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18504 NL80211_MCGRP_MLME, gfp);
18505 return;
18506
18507 nla_put_failure:
18508 nlmsg_free(msg);
18509 }
18510 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18511
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)18512 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18513 struct net_device *netdev, const u8 *addr,
18514 enum nl80211_key_type key_type, int key_id,
18515 const u8 *tsc, gfp_t gfp)
18516 {
18517 struct sk_buff *msg;
18518 void *hdr;
18519
18520 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18521 if (!msg)
18522 return;
18523
18524 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18525 if (!hdr) {
18526 nlmsg_free(msg);
18527 return;
18528 }
18529
18530 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18531 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18532 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18533 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18534 (key_id != -1 &&
18535 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18536 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18537 goto nla_put_failure;
18538
18539 genlmsg_end(msg, hdr);
18540
18541 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18542 NL80211_MCGRP_MLME, gfp);
18543 return;
18544
18545 nla_put_failure:
18546 nlmsg_free(msg);
18547 }
18548
nl80211_send_beacon_hint_event(struct wiphy * wiphy,struct ieee80211_channel * channel_before,struct ieee80211_channel * channel_after)18549 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18550 struct ieee80211_channel *channel_before,
18551 struct ieee80211_channel *channel_after)
18552 {
18553 struct sk_buff *msg;
18554 void *hdr;
18555 struct nlattr *nl_freq;
18556
18557 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18558 if (!msg)
18559 return;
18560
18561 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18562 if (!hdr) {
18563 nlmsg_free(msg);
18564 return;
18565 }
18566
18567 /*
18568 * Since we are applying the beacon hint to a wiphy we know its
18569 * wiphy_idx is valid
18570 */
18571 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18572 goto nla_put_failure;
18573
18574 /* Before */
18575 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18576 if (!nl_freq)
18577 goto nla_put_failure;
18578
18579 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18580 goto nla_put_failure;
18581 nla_nest_end(msg, nl_freq);
18582
18583 /* After */
18584 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18585 if (!nl_freq)
18586 goto nla_put_failure;
18587
18588 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18589 goto nla_put_failure;
18590 nla_nest_end(msg, nl_freq);
18591
18592 genlmsg_end(msg, hdr);
18593
18594 rcu_read_lock();
18595 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18596 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18597 rcu_read_unlock();
18598
18599 return;
18600
18601 nla_put_failure:
18602 nlmsg_free(msg);
18603 }
18604
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)18605 static void nl80211_send_remain_on_chan_event(
18606 int cmd, struct cfg80211_registered_device *rdev,
18607 struct wireless_dev *wdev, u64 cookie,
18608 struct ieee80211_channel *chan,
18609 unsigned int duration, gfp_t gfp)
18610 {
18611 struct sk_buff *msg;
18612 void *hdr;
18613
18614 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18615 if (!msg)
18616 return;
18617
18618 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18619 if (!hdr) {
18620 nlmsg_free(msg);
18621 return;
18622 }
18623
18624 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18625 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18626 wdev->netdev->ifindex)) ||
18627 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18628 NL80211_ATTR_PAD) ||
18629 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18630 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18631 NL80211_CHAN_NO_HT) ||
18632 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18633 NL80211_ATTR_PAD))
18634 goto nla_put_failure;
18635
18636 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18637 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18638 goto nla_put_failure;
18639
18640 genlmsg_end(msg, hdr);
18641
18642 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18643 NL80211_MCGRP_MLME, gfp);
18644 return;
18645
18646 nla_put_failure:
18647 nlmsg_free(msg);
18648 }
18649
cfg80211_assoc_comeback(struct net_device * netdev,const u8 * ap_addr,u32 timeout)18650 void cfg80211_assoc_comeback(struct net_device *netdev,
18651 const u8 *ap_addr, u32 timeout)
18652 {
18653 struct wireless_dev *wdev = netdev->ieee80211_ptr;
18654 struct wiphy *wiphy = wdev->wiphy;
18655 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18656 struct sk_buff *msg;
18657 void *hdr;
18658
18659 trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18660
18661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18662 if (!msg)
18663 return;
18664
18665 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18666 if (!hdr) {
18667 nlmsg_free(msg);
18668 return;
18669 }
18670
18671 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18672 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18673 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18674 nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18675 goto nla_put_failure;
18676
18677 genlmsg_end(msg, hdr);
18678
18679 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18680 NL80211_MCGRP_MLME, GFP_KERNEL);
18681 return;
18682
18683 nla_put_failure:
18684 nlmsg_free(msg);
18685 }
18686 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18687
cfg80211_ready_on_channel(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)18688 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18689 struct ieee80211_channel *chan,
18690 unsigned int duration, gfp_t gfp)
18691 {
18692 struct wiphy *wiphy = wdev->wiphy;
18693 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18694
18695 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18696 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18697 rdev, wdev, cookie, chan,
18698 duration, gfp);
18699 }
18700 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18701
cfg80211_remain_on_channel_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)18702 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18703 struct ieee80211_channel *chan,
18704 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_expired(wdev, cookie, chan);
18710 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18711 rdev, wdev, cookie, chan, 0, gfp);
18712 }
18713 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18714
cfg80211_tx_mgmt_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)18715 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18716 struct ieee80211_channel *chan,
18717 gfp_t gfp)
18718 {
18719 struct wiphy *wiphy = wdev->wiphy;
18720 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18721
18722 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18723 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18724 rdev, wdev, cookie, chan, 0, gfp);
18725 }
18726 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18727
cfg80211_new_sta(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)18728 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18729 struct station_info *sinfo, gfp_t gfp)
18730 {
18731 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18732 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18733 struct sk_buff *msg;
18734
18735 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18736
18737 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18738 if (!msg)
18739 return;
18740
18741 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18742 rdev, dev, mac_addr, sinfo) < 0) {
18743 nlmsg_free(msg);
18744 return;
18745 }
18746
18747 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18748 NL80211_MCGRP_MLME, gfp);
18749 }
18750 EXPORT_SYMBOL(cfg80211_new_sta);
18751
cfg80211_del_sta_sinfo(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)18752 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18753 struct station_info *sinfo, gfp_t gfp)
18754 {
18755 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18756 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18757 struct sk_buff *msg;
18758 struct station_info empty_sinfo = {};
18759
18760 if (!sinfo)
18761 sinfo = &empty_sinfo;
18762
18763 trace_cfg80211_del_sta(dev, mac_addr);
18764
18765 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18766 if (!msg) {
18767 cfg80211_sinfo_release_content(sinfo);
18768 return;
18769 }
18770
18771 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18772 rdev, dev, mac_addr, sinfo) < 0) {
18773 nlmsg_free(msg);
18774 return;
18775 }
18776
18777 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18778 NL80211_MCGRP_MLME, gfp);
18779 }
18780 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18781
cfg80211_conn_failed(struct net_device * dev,const u8 * mac_addr,enum nl80211_connect_failed_reason reason,gfp_t gfp)18782 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18783 enum nl80211_connect_failed_reason reason,
18784 gfp_t gfp)
18785 {
18786 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18787 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18788 struct sk_buff *msg;
18789 void *hdr;
18790
18791 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18792 if (!msg)
18793 return;
18794
18795 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18796 if (!hdr) {
18797 nlmsg_free(msg);
18798 return;
18799 }
18800
18801 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18802 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18803 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18804 goto nla_put_failure;
18805
18806 genlmsg_end(msg, hdr);
18807
18808 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18809 NL80211_MCGRP_MLME, gfp);
18810 return;
18811
18812 nla_put_failure:
18813 nlmsg_free(msg);
18814 }
18815 EXPORT_SYMBOL(cfg80211_conn_failed);
18816
__nl80211_unexpected_frame(struct net_device * dev,u8 cmd,const u8 * addr,gfp_t gfp)18817 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18818 const u8 *addr, gfp_t gfp)
18819 {
18820 struct wireless_dev *wdev = dev->ieee80211_ptr;
18821 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18822 struct sk_buff *msg;
18823 void *hdr;
18824 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18825
18826 if (!nlportid)
18827 return false;
18828
18829 msg = nlmsg_new(100, gfp);
18830 if (!msg)
18831 return true;
18832
18833 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18834 if (!hdr) {
18835 nlmsg_free(msg);
18836 return true;
18837 }
18838
18839 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18840 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18841 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18842 goto nla_put_failure;
18843
18844 genlmsg_end(msg, hdr);
18845 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18846 return true;
18847
18848 nla_put_failure:
18849 nlmsg_free(msg);
18850 return true;
18851 }
18852
cfg80211_rx_spurious_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)18853 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18854 const u8 *addr, gfp_t gfp)
18855 {
18856 struct wireless_dev *wdev = dev->ieee80211_ptr;
18857 bool ret;
18858
18859 trace_cfg80211_rx_spurious_frame(dev, addr);
18860
18861 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18862 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18863 trace_cfg80211_return_bool(false);
18864 return false;
18865 }
18866 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18867 addr, gfp);
18868 trace_cfg80211_return_bool(ret);
18869 return ret;
18870 }
18871 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18872
cfg80211_rx_unexpected_4addr_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)18873 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18874 const u8 *addr, gfp_t gfp)
18875 {
18876 struct wireless_dev *wdev = dev->ieee80211_ptr;
18877 bool ret;
18878
18879 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18880
18881 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18882 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18883 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18884 trace_cfg80211_return_bool(false);
18885 return false;
18886 }
18887 ret = __nl80211_unexpected_frame(dev,
18888 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18889 addr, gfp);
18890 trace_cfg80211_return_bool(ret);
18891 return ret;
18892 }
18893 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18894
nl80211_send_mgmt(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 nlportid,struct cfg80211_rx_info * info,gfp_t gfp)18895 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18896 struct wireless_dev *wdev, u32 nlportid,
18897 struct cfg80211_rx_info *info, gfp_t gfp)
18898 {
18899 struct net_device *netdev = wdev->netdev;
18900 struct sk_buff *msg;
18901 void *hdr;
18902
18903 msg = nlmsg_new(100 + info->len, gfp);
18904 if (!msg)
18905 return -ENOMEM;
18906
18907 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18908 if (!hdr) {
18909 nlmsg_free(msg);
18910 return -ENOMEM;
18911 }
18912
18913 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18914 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18915 netdev->ifindex)) ||
18916 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18917 NL80211_ATTR_PAD) ||
18918 (info->have_link_id &&
18919 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18920 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18921 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18922 (info->sig_dbm &&
18923 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18924 nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18925 (info->flags &&
18926 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18927 (info->rx_tstamp && nla_put_u64_64bit(msg,
18928 NL80211_ATTR_RX_HW_TIMESTAMP,
18929 info->rx_tstamp,
18930 NL80211_ATTR_PAD)) ||
18931 (info->ack_tstamp && nla_put_u64_64bit(msg,
18932 NL80211_ATTR_TX_HW_TIMESTAMP,
18933 info->ack_tstamp,
18934 NL80211_ATTR_PAD)))
18935 goto nla_put_failure;
18936
18937 genlmsg_end(msg, hdr);
18938
18939 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18940
18941 nla_put_failure:
18942 nlmsg_free(msg);
18943 return -ENOBUFS;
18944 }
18945
nl80211_frame_tx_status(struct wireless_dev * wdev,struct cfg80211_tx_status * status,gfp_t gfp,enum nl80211_commands command)18946 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18947 struct cfg80211_tx_status *status,
18948 gfp_t gfp, enum nl80211_commands command)
18949 {
18950 struct wiphy *wiphy = wdev->wiphy;
18951 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18952 struct net_device *netdev = wdev->netdev;
18953 struct sk_buff *msg;
18954 void *hdr;
18955
18956 if (command == NL80211_CMD_FRAME_TX_STATUS)
18957 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18958 status->ack);
18959 else
18960 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18961 status->ack);
18962
18963 msg = nlmsg_new(100 + status->len, gfp);
18964 if (!msg)
18965 return;
18966
18967 hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18968 if (!hdr) {
18969 nlmsg_free(msg);
18970 return;
18971 }
18972
18973 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18974 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18975 netdev->ifindex)) ||
18976 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18977 NL80211_ATTR_PAD) ||
18978 nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18979 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18980 NL80211_ATTR_PAD) ||
18981 (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18982 (status->tx_tstamp &&
18983 nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18984 status->tx_tstamp, NL80211_ATTR_PAD)) ||
18985 (status->ack_tstamp &&
18986 nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18987 status->ack_tstamp, NL80211_ATTR_PAD)))
18988 goto nla_put_failure;
18989
18990 genlmsg_end(msg, hdr);
18991
18992 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18993 NL80211_MCGRP_MLME, gfp);
18994 return;
18995
18996 nla_put_failure:
18997 nlmsg_free(msg);
18998 }
18999
cfg80211_control_port_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)19000 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
19001 const u8 *buf, size_t len, bool ack,
19002 gfp_t gfp)
19003 {
19004 struct cfg80211_tx_status status = {
19005 .cookie = cookie,
19006 .buf = buf,
19007 .len = len,
19008 .ack = ack
19009 };
19010
19011 nl80211_frame_tx_status(wdev, &status, gfp,
19012 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
19013 }
19014 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
19015
cfg80211_mgmt_tx_status_ext(struct wireless_dev * wdev,struct cfg80211_tx_status * status,gfp_t gfp)19016 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
19017 struct cfg80211_tx_status *status, gfp_t gfp)
19018 {
19019 nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
19020 }
19021 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
19022
__nl80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted,int link_id,gfp_t gfp)19023 static int __nl80211_rx_control_port(struct net_device *dev,
19024 struct sk_buff *skb,
19025 bool unencrypted,
19026 int link_id,
19027 gfp_t gfp)
19028 {
19029 struct wireless_dev *wdev = dev->ieee80211_ptr;
19030 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19031 struct ethhdr *ehdr = eth_hdr(skb);
19032 const u8 *addr = ehdr->h_source;
19033 u16 proto = be16_to_cpu(skb->protocol);
19034 struct sk_buff *msg;
19035 void *hdr;
19036 struct nlattr *frame;
19037
19038 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
19039
19040 if (!nlportid)
19041 return -ENOENT;
19042
19043 msg = nlmsg_new(100 + skb->len, gfp);
19044 if (!msg)
19045 return -ENOMEM;
19046
19047 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
19048 if (!hdr) {
19049 nlmsg_free(msg);
19050 return -ENOBUFS;
19051 }
19052
19053 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19054 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19055 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19056 NL80211_ATTR_PAD) ||
19057 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19058 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
19059 (link_id >= 0 &&
19060 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) ||
19061 (unencrypted && nla_put_flag(msg,
19062 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
19063 goto nla_put_failure;
19064
19065 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
19066 if (!frame)
19067 goto nla_put_failure;
19068
19069 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
19070 genlmsg_end(msg, hdr);
19071
19072 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19073
19074 nla_put_failure:
19075 nlmsg_free(msg);
19076 return -ENOBUFS;
19077 }
19078
cfg80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted,int link_id)19079 bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb,
19080 bool unencrypted, int link_id)
19081 {
19082 int ret;
19083
19084 trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id);
19085 ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id,
19086 GFP_ATOMIC);
19087 trace_cfg80211_return_bool(ret == 0);
19088 return ret == 0;
19089 }
19090 EXPORT_SYMBOL(cfg80211_rx_control_port);
19091
cfg80211_prepare_cqm(struct net_device * dev,const char * mac,gfp_t gfp)19092 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
19093 const char *mac, gfp_t gfp)
19094 {
19095 struct wireless_dev *wdev = dev->ieee80211_ptr;
19096 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19097 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19098 void **cb;
19099
19100 if (!msg)
19101 return NULL;
19102
19103 cb = (void **)msg->cb;
19104
19105 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
19106 if (!cb[0]) {
19107 nlmsg_free(msg);
19108 return NULL;
19109 }
19110
19111 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19112 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19113 goto nla_put_failure;
19114
19115 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19116 goto nla_put_failure;
19117
19118 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
19119 if (!cb[1])
19120 goto nla_put_failure;
19121
19122 cb[2] = rdev;
19123
19124 return msg;
19125 nla_put_failure:
19126 nlmsg_free(msg);
19127 return NULL;
19128 }
19129
cfg80211_send_cqm(struct sk_buff * msg,gfp_t gfp)19130 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
19131 {
19132 void **cb = (void **)msg->cb;
19133 struct cfg80211_registered_device *rdev = cb[2];
19134
19135 nla_nest_end(msg, cb[1]);
19136 genlmsg_end(msg, cb[0]);
19137
19138 memset(msg->cb, 0, sizeof(msg->cb));
19139
19140 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19141 NL80211_MCGRP_MLME, gfp);
19142 }
19143
cfg80211_cqm_rssi_notify(struct net_device * dev,enum nl80211_cqm_rssi_threshold_event rssi_event,s32 rssi_level,gfp_t gfp)19144 void cfg80211_cqm_rssi_notify(struct net_device *dev,
19145 enum nl80211_cqm_rssi_threshold_event rssi_event,
19146 s32 rssi_level, gfp_t gfp)
19147 {
19148 struct wireless_dev *wdev = dev->ieee80211_ptr;
19149 struct cfg80211_cqm_config *cqm_config;
19150
19151 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
19152
19153 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
19154 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
19155 return;
19156
19157 rcu_read_lock();
19158 cqm_config = rcu_dereference(wdev->cqm_config);
19159 if (cqm_config) {
19160 cqm_config->last_rssi_event_value = rssi_level;
19161 cqm_config->last_rssi_event_type = rssi_event;
19162 wiphy_work_queue(wdev->wiphy, &wdev->cqm_rssi_work);
19163 }
19164 rcu_read_unlock();
19165 }
19166 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
19167
cfg80211_cqm_rssi_notify_work(struct wiphy * wiphy,struct wiphy_work * work)19168 void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work)
19169 {
19170 struct wireless_dev *wdev = container_of(work, struct wireless_dev,
19171 cqm_rssi_work);
19172 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19173 enum nl80211_cqm_rssi_threshold_event rssi_event;
19174 struct cfg80211_cqm_config *cqm_config;
19175 struct sk_buff *msg;
19176 s32 rssi_level;
19177
19178 wdev_lock(wdev);
19179 cqm_config = rcu_dereference_protected(wdev->cqm_config,
19180 lockdep_is_held(&wdev->mtx));
19181 if (!cqm_config)
19182 goto unlock;
19183
19184 if (cqm_config->use_range_api)
19185 cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config);
19186
19187 rssi_level = cqm_config->last_rssi_event_value;
19188 rssi_event = cqm_config->last_rssi_event_type;
19189
19190 msg = cfg80211_prepare_cqm(wdev->netdev, NULL, GFP_KERNEL);
19191 if (!msg)
19192 goto unlock;
19193
19194 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
19195 rssi_event))
19196 goto nla_put_failure;
19197
19198 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
19199 rssi_level))
19200 goto nla_put_failure;
19201
19202 cfg80211_send_cqm(msg, GFP_KERNEL);
19203
19204 goto unlock;
19205
19206 nla_put_failure:
19207 nlmsg_free(msg);
19208 unlock:
19209 wdev_unlock(wdev);
19210 }
19211
cfg80211_cqm_txe_notify(struct net_device * dev,const u8 * peer,u32 num_packets,u32 rate,u32 intvl,gfp_t gfp)19212 void cfg80211_cqm_txe_notify(struct net_device *dev,
19213 const u8 *peer, u32 num_packets,
19214 u32 rate, u32 intvl, gfp_t gfp)
19215 {
19216 struct sk_buff *msg;
19217
19218 msg = cfg80211_prepare_cqm(dev, peer, gfp);
19219 if (!msg)
19220 return;
19221
19222 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
19223 goto nla_put_failure;
19224
19225 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
19226 goto nla_put_failure;
19227
19228 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
19229 goto nla_put_failure;
19230
19231 cfg80211_send_cqm(msg, gfp);
19232 return;
19233
19234 nla_put_failure:
19235 nlmsg_free(msg);
19236 }
19237 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
19238
cfg80211_cqm_pktloss_notify(struct net_device * dev,const u8 * peer,u32 num_packets,gfp_t gfp)19239 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
19240 const u8 *peer, u32 num_packets, gfp_t gfp)
19241 {
19242 struct sk_buff *msg;
19243
19244 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
19245
19246 msg = cfg80211_prepare_cqm(dev, peer, gfp);
19247 if (!msg)
19248 return;
19249
19250 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
19251 goto nla_put_failure;
19252
19253 cfg80211_send_cqm(msg, gfp);
19254 return;
19255
19256 nla_put_failure:
19257 nlmsg_free(msg);
19258 }
19259 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
19260
cfg80211_cqm_beacon_loss_notify(struct net_device * dev,gfp_t gfp)19261 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
19262 {
19263 struct sk_buff *msg;
19264
19265 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19266 if (!msg)
19267 return;
19268
19269 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
19270 goto nla_put_failure;
19271
19272 cfg80211_send_cqm(msg, gfp);
19273 return;
19274
19275 nla_put_failure:
19276 nlmsg_free(msg);
19277 }
19278 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
19279
nl80211_gtk_rekey_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)19280 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
19281 struct net_device *netdev, const u8 *bssid,
19282 const u8 *replay_ctr, gfp_t gfp)
19283 {
19284 struct sk_buff *msg;
19285 struct nlattr *rekey_attr;
19286 void *hdr;
19287
19288 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19289 if (!msg)
19290 return;
19291
19292 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
19293 if (!hdr) {
19294 nlmsg_free(msg);
19295 return;
19296 }
19297
19298 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19299 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19300 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
19301 goto nla_put_failure;
19302
19303 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
19304 if (!rekey_attr)
19305 goto nla_put_failure;
19306
19307 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
19308 NL80211_REPLAY_CTR_LEN, replay_ctr))
19309 goto nla_put_failure;
19310
19311 nla_nest_end(msg, rekey_attr);
19312
19313 genlmsg_end(msg, hdr);
19314
19315 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19316 NL80211_MCGRP_MLME, gfp);
19317 return;
19318
19319 nla_put_failure:
19320 nlmsg_free(msg);
19321 }
19322
cfg80211_gtk_rekey_notify(struct net_device * dev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)19323 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
19324 const u8 *replay_ctr, gfp_t gfp)
19325 {
19326 struct wireless_dev *wdev = dev->ieee80211_ptr;
19327 struct wiphy *wiphy = wdev->wiphy;
19328 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19329
19330 trace_cfg80211_gtk_rekey_notify(dev, bssid);
19331 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
19332 }
19333 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
19334
19335 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)19336 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
19337 struct net_device *netdev, int index,
19338 const u8 *bssid, bool preauth, gfp_t gfp)
19339 {
19340 struct sk_buff *msg;
19341 struct nlattr *attr;
19342 void *hdr;
19343
19344 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19345 if (!msg)
19346 return;
19347
19348 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
19349 if (!hdr) {
19350 nlmsg_free(msg);
19351 return;
19352 }
19353
19354 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19355 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19356 goto nla_put_failure;
19357
19358 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
19359 if (!attr)
19360 goto nla_put_failure;
19361
19362 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
19363 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
19364 (preauth &&
19365 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
19366 goto nla_put_failure;
19367
19368 nla_nest_end(msg, attr);
19369
19370 genlmsg_end(msg, hdr);
19371
19372 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19373 NL80211_MCGRP_MLME, gfp);
19374 return;
19375
19376 nla_put_failure:
19377 nlmsg_free(msg);
19378 }
19379
cfg80211_pmksa_candidate_notify(struct net_device * dev,int index,const u8 * bssid,bool preauth,gfp_t gfp)19380 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
19381 const u8 *bssid, bool preauth, gfp_t gfp)
19382 {
19383 struct wireless_dev *wdev = dev->ieee80211_ptr;
19384 struct wiphy *wiphy = wdev->wiphy;
19385 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19386
19387 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
19388 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
19389 }
19390 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
19391
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)19392 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
19393 struct net_device *netdev,
19394 unsigned int link_id,
19395 struct cfg80211_chan_def *chandef,
19396 gfp_t gfp,
19397 enum nl80211_commands notif,
19398 u8 count, bool quiet, u16 punct_bitmap)
19399 {
19400 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19401 struct sk_buff *msg;
19402 void *hdr;
19403
19404 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19405 if (!msg)
19406 return;
19407
19408 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
19409 if (!hdr) {
19410 nlmsg_free(msg);
19411 return;
19412 }
19413
19414 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19415 goto nla_put_failure;
19416
19417 if (wdev->valid_links &&
19418 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
19419 goto nla_put_failure;
19420
19421 if (nl80211_send_chandef(msg, chandef))
19422 goto nla_put_failure;
19423
19424 if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
19425 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
19426 goto nla_put_failure;
19427 if (quiet &&
19428 nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
19429 goto nla_put_failure;
19430 }
19431
19432 if (nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, punct_bitmap))
19433 goto nla_put_failure;
19434
19435 genlmsg_end(msg, hdr);
19436
19437 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19438 NL80211_MCGRP_MLME, gfp);
19439 return;
19440
19441 nla_put_failure:
19442 nlmsg_free(msg);
19443 }
19444
cfg80211_ch_switch_notify(struct net_device * dev,struct cfg80211_chan_def * chandef,unsigned int link_id,u16 punct_bitmap)19445 void cfg80211_ch_switch_notify(struct net_device *dev,
19446 struct cfg80211_chan_def *chandef,
19447 unsigned int link_id, u16 punct_bitmap)
19448 {
19449 struct wireless_dev *wdev = dev->ieee80211_ptr;
19450 struct wiphy *wiphy = wdev->wiphy;
19451 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19452
19453 ASSERT_WDEV_LOCK(wdev);
19454 WARN_INVALID_LINK_ID(wdev, link_id);
19455
19456 trace_cfg80211_ch_switch_notify(dev, chandef, link_id, punct_bitmap);
19457
19458 switch (wdev->iftype) {
19459 case NL80211_IFTYPE_STATION:
19460 case NL80211_IFTYPE_P2P_CLIENT:
19461 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19462 cfg80211_update_assoc_bss_entry(wdev, link_id,
19463 chandef->chan);
19464 break;
19465 case NL80211_IFTYPE_MESH_POINT:
19466 wdev->u.mesh.chandef = *chandef;
19467 wdev->u.mesh.preset_chandef = *chandef;
19468 break;
19469 case NL80211_IFTYPE_AP:
19470 case NL80211_IFTYPE_P2P_GO:
19471 wdev->links[link_id].ap.chandef = *chandef;
19472 break;
19473 case NL80211_IFTYPE_ADHOC:
19474 wdev->u.ibss.chandef = *chandef;
19475 break;
19476 default:
19477 WARN_ON(1);
19478 break;
19479 }
19480
19481 cfg80211_sched_dfs_chan_update(rdev);
19482
19483 nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19484 NL80211_CMD_CH_SWITCH_NOTIFY, 0, false,
19485 punct_bitmap);
19486 }
19487 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19488
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)19489 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19490 struct cfg80211_chan_def *chandef,
19491 unsigned int link_id, u8 count,
19492 bool quiet, u16 punct_bitmap)
19493 {
19494 struct wireless_dev *wdev = dev->ieee80211_ptr;
19495 struct wiphy *wiphy = wdev->wiphy;
19496 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19497
19498 ASSERT_WDEV_LOCK(wdev);
19499 WARN_INVALID_LINK_ID(wdev, link_id);
19500
19501 trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id,
19502 punct_bitmap);
19503
19504
19505 nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19506 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19507 count, quiet, punct_bitmap);
19508 }
19509 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19510
cfg80211_bss_color_notify(struct net_device * dev,enum nl80211_commands cmd,u8 count,u64 color_bitmap)19511 int cfg80211_bss_color_notify(struct net_device *dev,
19512 enum nl80211_commands cmd, u8 count,
19513 u64 color_bitmap)
19514 {
19515 struct wireless_dev *wdev = dev->ieee80211_ptr;
19516 struct wiphy *wiphy = wdev->wiphy;
19517 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19518 struct sk_buff *msg;
19519 void *hdr;
19520
19521 ASSERT_WDEV_LOCK(wdev);
19522
19523 trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19524
19525 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19526 if (!msg)
19527 return -ENOMEM;
19528
19529 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19530 if (!hdr)
19531 goto nla_put_failure;
19532
19533 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19534 goto nla_put_failure;
19535
19536 if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19537 nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19538 goto nla_put_failure;
19539
19540 if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19541 nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19542 color_bitmap, NL80211_ATTR_PAD))
19543 goto nla_put_failure;
19544
19545 genlmsg_end(msg, hdr);
19546
19547 return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19548 msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
19549
19550 nla_put_failure:
19551 nlmsg_free(msg);
19552 return -EINVAL;
19553 }
19554 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19555
19556 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)19557 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19558 const struct cfg80211_chan_def *chandef,
19559 enum nl80211_radar_event event,
19560 struct net_device *netdev, gfp_t gfp)
19561 {
19562 struct sk_buff *msg;
19563 void *hdr;
19564
19565 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19566 if (!msg)
19567 return;
19568
19569 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19570 if (!hdr) {
19571 nlmsg_free(msg);
19572 return;
19573 }
19574
19575 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19576 goto nla_put_failure;
19577
19578 /* NOP and radar events don't need a netdev parameter */
19579 if (netdev) {
19580 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19581
19582 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19583 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19584 NL80211_ATTR_PAD))
19585 goto nla_put_failure;
19586 }
19587
19588 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19589 goto nla_put_failure;
19590
19591 if (nl80211_send_chandef(msg, chandef))
19592 goto nla_put_failure;
19593
19594 genlmsg_end(msg, hdr);
19595
19596 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19597 NL80211_MCGRP_MLME, gfp);
19598 return;
19599
19600 nla_put_failure:
19601 nlmsg_free(msg);
19602 }
19603
cfg80211_sta_opmode_change_notify(struct net_device * dev,const u8 * mac,struct sta_opmode_info * sta_opmode,gfp_t gfp)19604 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19605 struct sta_opmode_info *sta_opmode,
19606 gfp_t gfp)
19607 {
19608 struct sk_buff *msg;
19609 struct wireless_dev *wdev = dev->ieee80211_ptr;
19610 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19611 void *hdr;
19612
19613 if (WARN_ON(!mac))
19614 return;
19615
19616 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19617 if (!msg)
19618 return;
19619
19620 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19621 if (!hdr) {
19622 nlmsg_free(msg);
19623 return;
19624 }
19625
19626 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19627 goto nla_put_failure;
19628
19629 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19630 goto nla_put_failure;
19631
19632 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19633 goto nla_put_failure;
19634
19635 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19636 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19637 goto nla_put_failure;
19638
19639 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19640 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19641 goto nla_put_failure;
19642
19643 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19644 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19645 goto nla_put_failure;
19646
19647 genlmsg_end(msg, hdr);
19648
19649 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19650 NL80211_MCGRP_MLME, gfp);
19651
19652 return;
19653
19654 nla_put_failure:
19655 nlmsg_free(msg);
19656 }
19657 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19658
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)19659 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19660 u64 cookie, bool acked, s32 ack_signal,
19661 bool is_valid_ack_signal, gfp_t gfp)
19662 {
19663 struct wireless_dev *wdev = dev->ieee80211_ptr;
19664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19665 struct sk_buff *msg;
19666 void *hdr;
19667
19668 trace_cfg80211_probe_status(dev, addr, cookie, acked);
19669
19670 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19671
19672 if (!msg)
19673 return;
19674
19675 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19676 if (!hdr) {
19677 nlmsg_free(msg);
19678 return;
19679 }
19680
19681 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19682 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19683 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19684 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19685 NL80211_ATTR_PAD) ||
19686 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19687 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19688 ack_signal)))
19689 goto nla_put_failure;
19690
19691 genlmsg_end(msg, hdr);
19692
19693 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19694 NL80211_MCGRP_MLME, gfp);
19695 return;
19696
19697 nla_put_failure:
19698 nlmsg_free(msg);
19699 }
19700 EXPORT_SYMBOL(cfg80211_probe_status);
19701
cfg80211_report_obss_beacon_khz(struct wiphy * wiphy,const u8 * frame,size_t len,int freq,int sig_dbm)19702 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19703 size_t len, int freq, int sig_dbm)
19704 {
19705 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19706 struct sk_buff *msg;
19707 void *hdr;
19708 struct cfg80211_beacon_registration *reg;
19709
19710 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19711
19712 spin_lock_bh(&rdev->beacon_registrations_lock);
19713 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19714 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19715 if (!msg) {
19716 spin_unlock_bh(&rdev->beacon_registrations_lock);
19717 return;
19718 }
19719
19720 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19721 if (!hdr)
19722 goto nla_put_failure;
19723
19724 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19725 (freq &&
19726 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19727 KHZ_TO_MHZ(freq)) ||
19728 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19729 freq % 1000))) ||
19730 (sig_dbm &&
19731 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19732 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19733 goto nla_put_failure;
19734
19735 genlmsg_end(msg, hdr);
19736
19737 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19738 }
19739 spin_unlock_bh(&rdev->beacon_registrations_lock);
19740 return;
19741
19742 nla_put_failure:
19743 spin_unlock_bh(&rdev->beacon_registrations_lock);
19744 nlmsg_free(msg);
19745 }
19746 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19747
19748 #ifdef CONFIG_PM
cfg80211_net_detect_results(struct sk_buff * msg,struct cfg80211_wowlan_wakeup * wakeup)19749 static int cfg80211_net_detect_results(struct sk_buff *msg,
19750 struct cfg80211_wowlan_wakeup *wakeup)
19751 {
19752 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19753 struct nlattr *nl_results, *nl_match, *nl_freqs;
19754 int i, j;
19755
19756 nl_results = nla_nest_start_noflag(msg,
19757 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19758 if (!nl_results)
19759 return -EMSGSIZE;
19760
19761 for (i = 0; i < nd->n_matches; i++) {
19762 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19763
19764 nl_match = nla_nest_start_noflag(msg, i);
19765 if (!nl_match)
19766 break;
19767
19768 /* The SSID attribute is optional in nl80211, but for
19769 * simplicity reasons it's always present in the
19770 * cfg80211 structure. If a driver can't pass the
19771 * SSID, that needs to be changed. A zero length SSID
19772 * is still a valid SSID (wildcard), so it cannot be
19773 * used for this purpose.
19774 */
19775 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19776 match->ssid.ssid)) {
19777 nla_nest_cancel(msg, nl_match);
19778 goto out;
19779 }
19780
19781 if (match->n_channels) {
19782 nl_freqs = nla_nest_start_noflag(msg,
19783 NL80211_ATTR_SCAN_FREQUENCIES);
19784 if (!nl_freqs) {
19785 nla_nest_cancel(msg, nl_match);
19786 goto out;
19787 }
19788
19789 for (j = 0; j < match->n_channels; j++) {
19790 if (nla_put_u32(msg, j, match->channels[j])) {
19791 nla_nest_cancel(msg, nl_freqs);
19792 nla_nest_cancel(msg, nl_match);
19793 goto out;
19794 }
19795 }
19796
19797 nla_nest_end(msg, nl_freqs);
19798 }
19799
19800 nla_nest_end(msg, nl_match);
19801 }
19802
19803 out:
19804 nla_nest_end(msg, nl_results);
19805 return 0;
19806 }
19807
cfg80211_report_wowlan_wakeup(struct wireless_dev * wdev,struct cfg80211_wowlan_wakeup * wakeup,gfp_t gfp)19808 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19809 struct cfg80211_wowlan_wakeup *wakeup,
19810 gfp_t gfp)
19811 {
19812 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19813 struct sk_buff *msg;
19814 void *hdr;
19815 int size = 200;
19816
19817 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19818
19819 if (wakeup)
19820 size += wakeup->packet_present_len;
19821
19822 msg = nlmsg_new(size, gfp);
19823 if (!msg)
19824 return;
19825
19826 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19827 if (!hdr)
19828 goto free_msg;
19829
19830 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19831 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19832 NL80211_ATTR_PAD))
19833 goto free_msg;
19834
19835 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19836 wdev->netdev->ifindex))
19837 goto free_msg;
19838
19839 if (wakeup) {
19840 struct nlattr *reasons;
19841
19842 reasons = nla_nest_start_noflag(msg,
19843 NL80211_ATTR_WOWLAN_TRIGGERS);
19844 if (!reasons)
19845 goto free_msg;
19846
19847 if (wakeup->disconnect &&
19848 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19849 goto free_msg;
19850 if (wakeup->magic_pkt &&
19851 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19852 goto free_msg;
19853 if (wakeup->gtk_rekey_failure &&
19854 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19855 goto free_msg;
19856 if (wakeup->eap_identity_req &&
19857 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19858 goto free_msg;
19859 if (wakeup->four_way_handshake &&
19860 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19861 goto free_msg;
19862 if (wakeup->rfkill_release &&
19863 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19864 goto free_msg;
19865
19866 if (wakeup->pattern_idx >= 0 &&
19867 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19868 wakeup->pattern_idx))
19869 goto free_msg;
19870
19871 if (wakeup->tcp_match &&
19872 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19873 goto free_msg;
19874
19875 if (wakeup->tcp_connlost &&
19876 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19877 goto free_msg;
19878
19879 if (wakeup->tcp_nomoretokens &&
19880 nla_put_flag(msg,
19881 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19882 goto free_msg;
19883
19884 if (wakeup->packet) {
19885 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19886 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19887
19888 if (!wakeup->packet_80211) {
19889 pkt_attr =
19890 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19891 len_attr =
19892 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19893 }
19894
19895 if (wakeup->packet_len &&
19896 nla_put_u32(msg, len_attr, wakeup->packet_len))
19897 goto free_msg;
19898
19899 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19900 wakeup->packet))
19901 goto free_msg;
19902 }
19903
19904 if (wakeup->net_detect &&
19905 cfg80211_net_detect_results(msg, wakeup))
19906 goto free_msg;
19907
19908 nla_nest_end(msg, reasons);
19909 }
19910
19911 genlmsg_end(msg, hdr);
19912
19913 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19914 NL80211_MCGRP_MLME, gfp);
19915 return;
19916
19917 free_msg:
19918 nlmsg_free(msg);
19919 }
19920 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19921 #endif
19922
cfg80211_tdls_oper_request(struct net_device * dev,const u8 * peer,enum nl80211_tdls_operation oper,u16 reason_code,gfp_t gfp)19923 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19924 enum nl80211_tdls_operation oper,
19925 u16 reason_code, gfp_t gfp)
19926 {
19927 struct wireless_dev *wdev = dev->ieee80211_ptr;
19928 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19929 struct sk_buff *msg;
19930 void *hdr;
19931
19932 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19933 reason_code);
19934
19935 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19936 if (!msg)
19937 return;
19938
19939 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19940 if (!hdr) {
19941 nlmsg_free(msg);
19942 return;
19943 }
19944
19945 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19946 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19947 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19948 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19949 (reason_code > 0 &&
19950 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19951 goto nla_put_failure;
19952
19953 genlmsg_end(msg, hdr);
19954
19955 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19956 NL80211_MCGRP_MLME, gfp);
19957 return;
19958
19959 nla_put_failure:
19960 nlmsg_free(msg);
19961 }
19962 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19963
nl80211_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)19964 static int nl80211_netlink_notify(struct notifier_block * nb,
19965 unsigned long state,
19966 void *_notify)
19967 {
19968 struct netlink_notify *notify = _notify;
19969 struct cfg80211_registered_device *rdev;
19970 struct wireless_dev *wdev;
19971 struct cfg80211_beacon_registration *reg, *tmp;
19972
19973 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19974 return NOTIFY_DONE;
19975
19976 rcu_read_lock();
19977
19978 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19979 struct cfg80211_sched_scan_request *sched_scan_req;
19980
19981 list_for_each_entry_rcu(sched_scan_req,
19982 &rdev->sched_scan_req_list,
19983 list) {
19984 if (sched_scan_req->owner_nlportid == notify->portid) {
19985 sched_scan_req->nl_owner_dead = true;
19986 wiphy_work_queue(&rdev->wiphy,
19987 &rdev->sched_scan_stop_wk);
19988 }
19989 }
19990
19991 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19992 cfg80211_mlme_unregister_socket(wdev, notify->portid);
19993
19994 if (wdev->owner_nlportid == notify->portid) {
19995 wdev->nl_owner_dead = true;
19996 schedule_work(&rdev->destroy_work);
19997 } else if (wdev->conn_owner_nlportid == notify->portid) {
19998 schedule_work(&wdev->disconnect_wk);
19999 }
20000
20001 cfg80211_release_pmsr(wdev, notify->portid);
20002 }
20003
20004 spin_lock_bh(&rdev->beacon_registrations_lock);
20005 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
20006 list) {
20007 if (reg->nlportid == notify->portid) {
20008 list_del(®->list);
20009 kfree(reg);
20010 break;
20011 }
20012 }
20013 spin_unlock_bh(&rdev->beacon_registrations_lock);
20014 }
20015
20016 rcu_read_unlock();
20017
20018 /*
20019 * It is possible that the user space process that is controlling the
20020 * indoor setting disappeared, so notify the regulatory core.
20021 */
20022 regulatory_netlink_notify(notify->portid);
20023 return NOTIFY_OK;
20024 }
20025
20026 static struct notifier_block nl80211_netlink_notifier = {
20027 .notifier_call = nl80211_netlink_notify,
20028 };
20029
cfg80211_ft_event(struct net_device * netdev,struct cfg80211_ft_event_params * ft_event)20030 void cfg80211_ft_event(struct net_device *netdev,
20031 struct cfg80211_ft_event_params *ft_event)
20032 {
20033 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20034 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20035 struct sk_buff *msg;
20036 void *hdr;
20037
20038 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
20039
20040 if (!ft_event->target_ap)
20041 return;
20042
20043 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
20044 GFP_KERNEL);
20045 if (!msg)
20046 return;
20047
20048 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
20049 if (!hdr)
20050 goto out;
20051
20052 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20053 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20054 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
20055 goto out;
20056
20057 if (ft_event->ies &&
20058 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
20059 goto out;
20060 if (ft_event->ric_ies &&
20061 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
20062 ft_event->ric_ies))
20063 goto out;
20064
20065 genlmsg_end(msg, hdr);
20066
20067 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20068 NL80211_MCGRP_MLME, GFP_KERNEL);
20069 return;
20070 out:
20071 nlmsg_free(msg);
20072 }
20073 EXPORT_SYMBOL(cfg80211_ft_event);
20074
cfg80211_crit_proto_stopped(struct wireless_dev * wdev,gfp_t gfp)20075 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
20076 {
20077 struct cfg80211_registered_device *rdev;
20078 struct sk_buff *msg;
20079 void *hdr;
20080 u32 nlportid;
20081
20082 rdev = wiphy_to_rdev(wdev->wiphy);
20083 if (!rdev->crit_proto_nlportid)
20084 return;
20085
20086 nlportid = rdev->crit_proto_nlportid;
20087 rdev->crit_proto_nlportid = 0;
20088
20089 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20090 if (!msg)
20091 return;
20092
20093 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
20094 if (!hdr)
20095 goto nla_put_failure;
20096
20097 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20098 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20099 NL80211_ATTR_PAD))
20100 goto nla_put_failure;
20101
20102 genlmsg_end(msg, hdr);
20103
20104 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
20105 return;
20106
20107 nla_put_failure:
20108 nlmsg_free(msg);
20109 }
20110 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
20111
nl80211_send_ap_stopped(struct wireless_dev * wdev,unsigned int link_id)20112 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
20113 {
20114 struct wiphy *wiphy = wdev->wiphy;
20115 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20116 struct sk_buff *msg;
20117 void *hdr;
20118
20119 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
20120 if (!msg)
20121 return;
20122
20123 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
20124 if (!hdr)
20125 goto out;
20126
20127 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20128 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
20129 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20130 NL80211_ATTR_PAD) ||
20131 (wdev->valid_links &&
20132 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
20133 goto out;
20134
20135 genlmsg_end(msg, hdr);
20136
20137 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
20138 NL80211_MCGRP_MLME, GFP_KERNEL);
20139 return;
20140 out:
20141 nlmsg_free(msg);
20142 }
20143
cfg80211_external_auth_request(struct net_device * dev,struct cfg80211_external_auth_params * params,gfp_t gfp)20144 int cfg80211_external_auth_request(struct net_device *dev,
20145 struct cfg80211_external_auth_params *params,
20146 gfp_t gfp)
20147 {
20148 struct wireless_dev *wdev = dev->ieee80211_ptr;
20149 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
20150 struct sk_buff *msg;
20151 void *hdr;
20152
20153 if (!wdev->conn_owner_nlportid)
20154 return -EINVAL;
20155
20156 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20157 if (!msg)
20158 return -ENOMEM;
20159
20160 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
20161 if (!hdr)
20162 goto nla_put_failure;
20163
20164 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20165 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
20166 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
20167 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
20168 params->action) ||
20169 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
20170 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
20171 params->ssid.ssid) ||
20172 (!is_zero_ether_addr(params->mld_addr) &&
20173 nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
20174 goto nla_put_failure;
20175
20176 genlmsg_end(msg, hdr);
20177 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
20178 wdev->conn_owner_nlportid);
20179 return 0;
20180
20181 nla_put_failure:
20182 nlmsg_free(msg);
20183 return -ENOBUFS;
20184 }
20185 EXPORT_SYMBOL(cfg80211_external_auth_request);
20186
cfg80211_update_owe_info_event(struct net_device * netdev,struct cfg80211_update_owe_info * owe_info,gfp_t gfp)20187 void cfg80211_update_owe_info_event(struct net_device *netdev,
20188 struct cfg80211_update_owe_info *owe_info,
20189 gfp_t gfp)
20190 {
20191 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20192 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20193 struct sk_buff *msg;
20194 void *hdr;
20195
20196 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
20197
20198 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20199 if (!msg)
20200 return;
20201
20202 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
20203 if (!hdr)
20204 goto nla_put_failure;
20205
20206 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20207 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20208 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
20209 goto nla_put_failure;
20210
20211 if (!owe_info->ie_len ||
20212 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
20213 goto nla_put_failure;
20214
20215 if (owe_info->assoc_link_id != -1) {
20216 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
20217 owe_info->assoc_link_id))
20218 goto nla_put_failure;
20219
20220 if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
20221 nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
20222 owe_info->peer_mld_addr))
20223 goto nla_put_failure;
20224 }
20225
20226 genlmsg_end(msg, hdr);
20227
20228 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20229 NL80211_MCGRP_MLME, gfp);
20230 return;
20231
20232 nla_put_failure:
20233 genlmsg_cancel(msg, hdr);
20234 nlmsg_free(msg);
20235 }
20236 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
20237
20238 /* initialisation/exit functions */
20239
nl80211_init(void)20240 int __init nl80211_init(void)
20241 {
20242 int err;
20243
20244 err = genl_register_family(&nl80211_fam);
20245 if (err)
20246 return err;
20247
20248 err = netlink_register_notifier(&nl80211_netlink_notifier);
20249 if (err)
20250 goto err_out;
20251
20252 return 0;
20253 err_out:
20254 genl_unregister_family(&nl80211_fam);
20255 return err;
20256 }
20257
nl80211_exit(void)20258 void nl80211_exit(void)
20259 {
20260 netlink_unregister_notifier(&nl80211_netlink_notifier);
20261 genl_unregister_family(&nl80211_fam);
20262 }
20263