xref: /openbmc/linux/net/wireless/nl80211.c (revision ae3473231e77a3f1909d48cd144cebe5e1d049b3)
1 /*
2  * This is the new netlink-based wireless configuration interface.
3  *
4  * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
5  * Copyright 2013-2014  Intel Mobile Communications GmbH
6  * Copyright 2015-2016	Intel Deutschland GmbH
7  */
8 
9 #include <linux/if.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14 #include <linux/if_ether.h>
15 #include <linux/ieee80211.h>
16 #include <linux/nl80211.h>
17 #include <linux/rtnetlink.h>
18 #include <linux/netlink.h>
19 #include <linux/etherdevice.h>
20 #include <net/net_namespace.h>
21 #include <net/genetlink.h>
22 #include <net/cfg80211.h>
23 #include <net/sock.h>
24 #include <net/inet_connection_sock.h>
25 #include "core.h"
26 #include "nl80211.h"
27 #include "reg.h"
28 #include "rdev-ops.h"
29 
30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
31 				   struct genl_info *info,
32 				   struct cfg80211_crypto_settings *settings,
33 				   int cipher_limit);
34 
35 /* the netlink family */
36 static struct genl_family nl80211_fam;
37 
38 /* multicast groups */
39 enum nl80211_multicast_groups {
40 	NL80211_MCGRP_CONFIG,
41 	NL80211_MCGRP_SCAN,
42 	NL80211_MCGRP_REGULATORY,
43 	NL80211_MCGRP_MLME,
44 	NL80211_MCGRP_VENDOR,
45 	NL80211_MCGRP_NAN,
46 	NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
47 };
48 
49 static const struct genl_multicast_group nl80211_mcgrps[] = {
50 	[NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
51 	[NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
52 	[NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
53 	[NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
54 	[NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
55 	[NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
56 #ifdef CONFIG_NL80211_TESTMODE
57 	[NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
58 #endif
59 };
60 
61 /* returns ERR_PTR values */
62 static struct wireless_dev *
63 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
64 {
65 	struct cfg80211_registered_device *rdev;
66 	struct wireless_dev *result = NULL;
67 	bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
68 	bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
69 	u64 wdev_id;
70 	int wiphy_idx = -1;
71 	int ifidx = -1;
72 
73 	ASSERT_RTNL();
74 
75 	if (!have_ifidx && !have_wdev_id)
76 		return ERR_PTR(-EINVAL);
77 
78 	if (have_ifidx)
79 		ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
80 	if (have_wdev_id) {
81 		wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
82 		wiphy_idx = wdev_id >> 32;
83 	}
84 
85 	list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
86 		struct wireless_dev *wdev;
87 
88 		if (wiphy_net(&rdev->wiphy) != netns)
89 			continue;
90 
91 		if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
92 			continue;
93 
94 		list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
95 			if (have_ifidx && wdev->netdev &&
96 			    wdev->netdev->ifindex == ifidx) {
97 				result = wdev;
98 				break;
99 			}
100 			if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
101 				result = wdev;
102 				break;
103 			}
104 		}
105 
106 		if (result)
107 			break;
108 	}
109 
110 	if (result)
111 		return result;
112 	return ERR_PTR(-ENODEV);
113 }
114 
115 static struct cfg80211_registered_device *
116 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
117 {
118 	struct cfg80211_registered_device *rdev = NULL, *tmp;
119 	struct net_device *netdev;
120 
121 	ASSERT_RTNL();
122 
123 	if (!attrs[NL80211_ATTR_WIPHY] &&
124 	    !attrs[NL80211_ATTR_IFINDEX] &&
125 	    !attrs[NL80211_ATTR_WDEV])
126 		return ERR_PTR(-EINVAL);
127 
128 	if (attrs[NL80211_ATTR_WIPHY])
129 		rdev = cfg80211_rdev_by_wiphy_idx(
130 				nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
131 
132 	if (attrs[NL80211_ATTR_WDEV]) {
133 		u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
134 		struct wireless_dev *wdev;
135 		bool found = false;
136 
137 		tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
138 		if (tmp) {
139 			/* make sure wdev exists */
140 			list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
141 				if (wdev->identifier != (u32)wdev_id)
142 					continue;
143 				found = true;
144 				break;
145 			}
146 
147 			if (!found)
148 				tmp = NULL;
149 
150 			if (rdev && tmp != rdev)
151 				return ERR_PTR(-EINVAL);
152 			rdev = tmp;
153 		}
154 	}
155 
156 	if (attrs[NL80211_ATTR_IFINDEX]) {
157 		int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
158 
159 		netdev = __dev_get_by_index(netns, ifindex);
160 		if (netdev) {
161 			if (netdev->ieee80211_ptr)
162 				tmp = wiphy_to_rdev(
163 					netdev->ieee80211_ptr->wiphy);
164 			else
165 				tmp = NULL;
166 
167 			/* not wireless device -- return error */
168 			if (!tmp)
169 				return ERR_PTR(-EINVAL);
170 
171 			/* mismatch -- return error */
172 			if (rdev && tmp != rdev)
173 				return ERR_PTR(-EINVAL);
174 
175 			rdev = tmp;
176 		}
177 	}
178 
179 	if (!rdev)
180 		return ERR_PTR(-ENODEV);
181 
182 	if (netns != wiphy_net(&rdev->wiphy))
183 		return ERR_PTR(-ENODEV);
184 
185 	return rdev;
186 }
187 
188 /*
189  * This function returns a pointer to the driver
190  * that the genl_info item that is passed refers to.
191  *
192  * The result of this can be a PTR_ERR and hence must
193  * be checked with IS_ERR() for errors.
194  */
195 static struct cfg80211_registered_device *
196 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
197 {
198 	return __cfg80211_rdev_from_attrs(netns, info->attrs);
199 }
200 
201 /* policy for the attributes */
202 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
203 	[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
204 	[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
205 				      .len = 20-1 },
206 	[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
207 
208 	[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
209 	[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
210 	[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
211 	[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
212 	[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
213 
214 	[NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
215 	[NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
216 	[NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
217 	[NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
218 	[NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
219 	[NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
220 
221 	[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
222 	[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
223 	[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
224 
225 	[NL80211_ATTR_MAC] = { .len = ETH_ALEN },
226 	[NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
227 
228 	[NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
229 	[NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
230 				    .len = WLAN_MAX_KEY_LEN },
231 	[NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
232 	[NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
233 	[NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
234 	[NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
235 	[NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
236 
237 	[NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
238 	[NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
239 	[NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
240 				       .len = IEEE80211_MAX_DATA_LEN },
241 	[NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
242 				       .len = IEEE80211_MAX_DATA_LEN },
243 	[NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
244 	[NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
245 	[NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
246 	[NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
247 					       .len = NL80211_MAX_SUPP_RATES },
248 	[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
249 	[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
250 	[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
251 	[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
252 				   .len = IEEE80211_MAX_MESH_ID_LEN },
253 	[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
254 
255 	[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
256 	[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
257 
258 	[NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
259 	[NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
260 	[NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
261 	[NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
262 					   .len = NL80211_MAX_SUPP_RATES },
263 	[NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
264 
265 	[NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
266 	[NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
267 
268 	[NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
269 
270 	[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
271 	[NL80211_ATTR_IE] = { .type = NLA_BINARY,
272 			      .len = IEEE80211_MAX_DATA_LEN },
273 	[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
274 	[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
275 
276 	[NL80211_ATTR_SSID] = { .type = NLA_BINARY,
277 				.len = IEEE80211_MAX_SSID_LEN },
278 	[NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
279 	[NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
280 	[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
281 	[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
282 	[NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
283 	[NL80211_ATTR_STA_FLAGS2] = {
284 		.len = sizeof(struct nl80211_sta_flag_update),
285 	},
286 	[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
287 	[NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
288 	[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
289 	[NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
290 	[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
291 	[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
292 	[NL80211_ATTR_PID] = { .type = NLA_U32 },
293 	[NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
294 	[NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
295 				 .len = WLAN_PMKID_LEN },
296 	[NL80211_ATTR_DURATION] = { .type = NLA_U32 },
297 	[NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
298 	[NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
299 	[NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
300 				 .len = IEEE80211_MAX_DATA_LEN },
301 	[NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
302 	[NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
303 	[NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
304 	[NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
305 	[NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
306 	[NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
307 	[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
308 	[NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
309 	[NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
310 	[NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
311 	[NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
312 	[NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
313 	[NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
314 	[NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
315 	[NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
316 	[NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
317 	[NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
318 	[NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
319 	[NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
320 	[NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
321 					 .len = IEEE80211_MAX_DATA_LEN },
322 	[NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
323 					 .len = IEEE80211_MAX_DATA_LEN },
324 	[NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
325 	[NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
326 	[NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
327 	[NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
328 	[NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
329 	[NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
330 	[NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
331 	[NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
332 	[NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
333 	[NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
334 	[NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
335 				      .len = IEEE80211_MAX_DATA_LEN },
336 	[NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
337 	[NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
338 	[NL80211_ATTR_HT_CAPABILITY_MASK] = {
339 		.len = NL80211_HT_CAPABILITY_LEN
340 	},
341 	[NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
342 	[NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
343 	[NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
344 	[NL80211_ATTR_WDEV] = { .type = NLA_U64 },
345 	[NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
346 	[NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
347 	[NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
348 	[NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
349 	[NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
350 	[NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
351 	[NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
352 	[NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
353 	[NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
354 	[NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
355 	[NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
356 	[NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
357 	[NL80211_ATTR_VHT_CAPABILITY_MASK] = {
358 		.len = NL80211_VHT_CAPABILITY_LEN,
359 	},
360 	[NL80211_ATTR_MDID] = { .type = NLA_U16 },
361 	[NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
362 				  .len = IEEE80211_MAX_DATA_LEN },
363 	[NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
364 	[NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
365 	[NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
366 	[NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
367 	[NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
368 	[NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
369 	[NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
370 	[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
371 	[NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
372 	[NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
373 	[NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
374 	[NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
375 	[NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
376 	[NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
377 				   .len = IEEE80211_QOS_MAP_LEN_MAX },
378 	[NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
379 	[NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
380 	[NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
381 	[NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
382 	[NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
383 	[NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
384 	[NL80211_ATTR_TSID] = { .type = NLA_U8 },
385 	[NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
386 	[NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
387 	[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
388 	[NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
389 	[NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
390 	[NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
391 	[NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
392 	[NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
393 	[NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
394 	[NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
395 	[NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
396 	[NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
397 		.len = VHT_MUMIMO_GROUPS_DATA_LEN
398 	},
399 	[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
400 	[NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
401 	[NL80211_ATTR_NAN_DUAL] = { .type = NLA_U8 },
402 	[NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
403 	[NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
404 				    .len = FILS_MAX_KEK_LEN },
405 	[NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
406 	[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
407 	[NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
408 };
409 
410 /* policy for the key attributes */
411 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
412 	[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
413 	[NL80211_KEY_IDX] = { .type = NLA_U8 },
414 	[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
415 	[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
416 	[NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
417 	[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
418 	[NL80211_KEY_TYPE] = { .type = NLA_U32 },
419 	[NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
420 };
421 
422 /* policy for the key default flags */
423 static const struct nla_policy
424 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
425 	[NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
426 	[NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
427 };
428 
429 #ifdef CONFIG_PM
430 /* policy for WoWLAN attributes */
431 static const struct nla_policy
432 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
433 	[NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
434 	[NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
435 	[NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
436 	[NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
437 	[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
438 	[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
439 	[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
440 	[NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
441 	[NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
442 	[NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
443 };
444 
445 static const struct nla_policy
446 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
447 	[NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
448 	[NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
449 	[NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
450 	[NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
451 	[NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
452 	[NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
453 	[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
454 		.len = sizeof(struct nl80211_wowlan_tcp_data_seq)
455 	},
456 	[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
457 		.len = sizeof(struct nl80211_wowlan_tcp_data_token)
458 	},
459 	[NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
460 	[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
461 	[NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
462 };
463 #endif /* CONFIG_PM */
464 
465 /* policy for coalesce rule attributes */
466 static const struct nla_policy
467 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
468 	[NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
469 	[NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
470 	[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
471 };
472 
473 /* policy for GTK rekey offload attributes */
474 static const struct nla_policy
475 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
476 	[NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
477 	[NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
478 	[NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
479 };
480 
481 static const struct nla_policy
482 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
483 	[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
484 						 .len = IEEE80211_MAX_SSID_LEN },
485 	[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
486 };
487 
488 static const struct nla_policy
489 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
490 	[NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
491 	[NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
492 };
493 
494 static const struct nla_policy
495 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
496 	[NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
497 	[NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
498 	[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
499 		.len = sizeof(struct nl80211_bss_select_rssi_adjust)
500 	},
501 };
502 
503 /* policy for NAN function attributes */
504 static const struct nla_policy
505 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
506 	[NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
507 	[NL80211_NAN_FUNC_SERVICE_ID] = { .type = NLA_BINARY,
508 				    .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
509 	[NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
510 	[NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
511 	[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
512 	[NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
513 	[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
514 	[NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
515 	[NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
516 	[NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
517 	[NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
518 			.len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
519 	[NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
520 	[NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
521 	[NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
522 	[NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
523 	[NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
524 };
525 
526 /* policy for Service Response Filter attributes */
527 static const struct nla_policy
528 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
529 	[NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
530 	[NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
531 				 .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
532 	[NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
533 	[NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
534 };
535 
536 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
537 				     struct netlink_callback *cb,
538 				     struct cfg80211_registered_device **rdev,
539 				     struct wireless_dev **wdev)
540 {
541 	int err;
542 
543 	rtnl_lock();
544 
545 	if (!cb->args[0]) {
546 		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
547 				  genl_family_attrbuf(&nl80211_fam),
548 				  nl80211_fam.maxattr, nl80211_policy);
549 		if (err)
550 			goto out_unlock;
551 
552 		*wdev = __cfg80211_wdev_from_attrs(
553 					sock_net(skb->sk),
554 					genl_family_attrbuf(&nl80211_fam));
555 		if (IS_ERR(*wdev)) {
556 			err = PTR_ERR(*wdev);
557 			goto out_unlock;
558 		}
559 		*rdev = wiphy_to_rdev((*wdev)->wiphy);
560 		/* 0 is the first index - add 1 to parse only once */
561 		cb->args[0] = (*rdev)->wiphy_idx + 1;
562 		cb->args[1] = (*wdev)->identifier;
563 	} else {
564 		/* subtract the 1 again here */
565 		struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
566 		struct wireless_dev *tmp;
567 
568 		if (!wiphy) {
569 			err = -ENODEV;
570 			goto out_unlock;
571 		}
572 		*rdev = wiphy_to_rdev(wiphy);
573 		*wdev = NULL;
574 
575 		list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
576 			if (tmp->identifier == cb->args[1]) {
577 				*wdev = tmp;
578 				break;
579 			}
580 		}
581 
582 		if (!*wdev) {
583 			err = -ENODEV;
584 			goto out_unlock;
585 		}
586 	}
587 
588 	return 0;
589  out_unlock:
590 	rtnl_unlock();
591 	return err;
592 }
593 
594 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
595 {
596 	rtnl_unlock();
597 }
598 
599 /* IE validation */
600 static bool is_valid_ie_attr(const struct nlattr *attr)
601 {
602 	const u8 *pos;
603 	int len;
604 
605 	if (!attr)
606 		return true;
607 
608 	pos = nla_data(attr);
609 	len = nla_len(attr);
610 
611 	while (len) {
612 		u8 elemlen;
613 
614 		if (len < 2)
615 			return false;
616 		len -= 2;
617 
618 		elemlen = pos[1];
619 		if (elemlen > len)
620 			return false;
621 
622 		len -= elemlen;
623 		pos += 2 + elemlen;
624 	}
625 
626 	return true;
627 }
628 
629 /* message building helper */
630 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
631 				   int flags, u8 cmd)
632 {
633 	/* since there is no private header just add the generic one */
634 	return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
635 }
636 
637 static int nl80211_msg_put_channel(struct sk_buff *msg,
638 				   struct ieee80211_channel *chan,
639 				   bool large)
640 {
641 	/* Some channels must be completely excluded from the
642 	 * list to protect old user-space tools from breaking
643 	 */
644 	if (!large && chan->flags &
645 	    (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
646 		return 0;
647 
648 	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
649 			chan->center_freq))
650 		goto nla_put_failure;
651 
652 	if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
653 	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
654 		goto nla_put_failure;
655 	if (chan->flags & IEEE80211_CHAN_NO_IR) {
656 		if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
657 			goto nla_put_failure;
658 		if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
659 			goto nla_put_failure;
660 	}
661 	if (chan->flags & IEEE80211_CHAN_RADAR) {
662 		if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
663 			goto nla_put_failure;
664 		if (large) {
665 			u32 time;
666 
667 			time = elapsed_jiffies_msecs(chan->dfs_state_entered);
668 
669 			if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
670 					chan->dfs_state))
671 				goto nla_put_failure;
672 			if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
673 					time))
674 				goto nla_put_failure;
675 			if (nla_put_u32(msg,
676 					NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
677 					chan->dfs_cac_ms))
678 				goto nla_put_failure;
679 		}
680 	}
681 
682 	if (large) {
683 		if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
684 		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
685 			goto nla_put_failure;
686 		if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
687 		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
688 			goto nla_put_failure;
689 		if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
690 		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
691 			goto nla_put_failure;
692 		if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
693 		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
694 			goto nla_put_failure;
695 		if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
696 		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
697 			goto nla_put_failure;
698 		if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
699 		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
700 			goto nla_put_failure;
701 		if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
702 		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
703 			goto nla_put_failure;
704 		if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
705 		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
706 			goto nla_put_failure;
707 	}
708 
709 	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
710 			DBM_TO_MBM(chan->max_power)))
711 		goto nla_put_failure;
712 
713 	return 0;
714 
715  nla_put_failure:
716 	return -ENOBUFS;
717 }
718 
719 /* netlink command implementations */
720 
721 struct key_parse {
722 	struct key_params p;
723 	int idx;
724 	int type;
725 	bool def, defmgmt;
726 	bool def_uni, def_multi;
727 };
728 
729 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
730 {
731 	struct nlattr *tb[NL80211_KEY_MAX + 1];
732 	int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
733 				   nl80211_key_policy);
734 	if (err)
735 		return err;
736 
737 	k->def = !!tb[NL80211_KEY_DEFAULT];
738 	k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
739 
740 	if (k->def) {
741 		k->def_uni = true;
742 		k->def_multi = true;
743 	}
744 	if (k->defmgmt)
745 		k->def_multi = true;
746 
747 	if (tb[NL80211_KEY_IDX])
748 		k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
749 
750 	if (tb[NL80211_KEY_DATA]) {
751 		k->p.key = nla_data(tb[NL80211_KEY_DATA]);
752 		k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
753 	}
754 
755 	if (tb[NL80211_KEY_SEQ]) {
756 		k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
757 		k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
758 	}
759 
760 	if (tb[NL80211_KEY_CIPHER])
761 		k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
762 
763 	if (tb[NL80211_KEY_TYPE]) {
764 		k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
765 		if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
766 			return -EINVAL;
767 	}
768 
769 	if (tb[NL80211_KEY_DEFAULT_TYPES]) {
770 		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
771 
772 		err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
773 				       tb[NL80211_KEY_DEFAULT_TYPES],
774 				       nl80211_key_default_policy);
775 		if (err)
776 			return err;
777 
778 		k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
779 		k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
780 	}
781 
782 	return 0;
783 }
784 
785 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
786 {
787 	if (info->attrs[NL80211_ATTR_KEY_DATA]) {
788 		k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
789 		k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
790 	}
791 
792 	if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
793 		k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
794 		k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
795 	}
796 
797 	if (info->attrs[NL80211_ATTR_KEY_IDX])
798 		k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
799 
800 	if (info->attrs[NL80211_ATTR_KEY_CIPHER])
801 		k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
802 
803 	k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
804 	k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
805 
806 	if (k->def) {
807 		k->def_uni = true;
808 		k->def_multi = true;
809 	}
810 	if (k->defmgmt)
811 		k->def_multi = true;
812 
813 	if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
814 		k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
815 		if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
816 			return -EINVAL;
817 	}
818 
819 	if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
820 		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
821 		int err = nla_parse_nested(
822 				kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
823 				info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
824 				nl80211_key_default_policy);
825 		if (err)
826 			return err;
827 
828 		k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
829 		k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
830 	}
831 
832 	return 0;
833 }
834 
835 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
836 {
837 	int err;
838 
839 	memset(k, 0, sizeof(*k));
840 	k->idx = -1;
841 	k->type = -1;
842 
843 	if (info->attrs[NL80211_ATTR_KEY])
844 		err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
845 	else
846 		err = nl80211_parse_key_old(info, k);
847 
848 	if (err)
849 		return err;
850 
851 	if (k->def && k->defmgmt)
852 		return -EINVAL;
853 
854 	if (k->defmgmt) {
855 		if (k->def_uni || !k->def_multi)
856 			return -EINVAL;
857 	}
858 
859 	if (k->idx != -1) {
860 		if (k->defmgmt) {
861 			if (k->idx < 4 || k->idx > 5)
862 				return -EINVAL;
863 		} else if (k->def) {
864 			if (k->idx < 0 || k->idx > 3)
865 				return -EINVAL;
866 		} else {
867 			if (k->idx < 0 || k->idx > 5)
868 				return -EINVAL;
869 		}
870 	}
871 
872 	return 0;
873 }
874 
875 static struct cfg80211_cached_keys *
876 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
877 		       struct nlattr *keys, bool *no_ht)
878 {
879 	struct key_parse parse;
880 	struct nlattr *key;
881 	struct cfg80211_cached_keys *result;
882 	int rem, err, def = 0;
883 	bool have_key = false;
884 
885 	nla_for_each_nested(key, keys, rem) {
886 		have_key = true;
887 		break;
888 	}
889 
890 	if (!have_key)
891 		return NULL;
892 
893 	result = kzalloc(sizeof(*result), GFP_KERNEL);
894 	if (!result)
895 		return ERR_PTR(-ENOMEM);
896 
897 	result->def = -1;
898 
899 	nla_for_each_nested(key, keys, rem) {
900 		memset(&parse, 0, sizeof(parse));
901 		parse.idx = -1;
902 
903 		err = nl80211_parse_key_new(key, &parse);
904 		if (err)
905 			goto error;
906 		err = -EINVAL;
907 		if (!parse.p.key)
908 			goto error;
909 		if (parse.idx < 0 || parse.idx > 3)
910 			goto error;
911 		if (parse.def) {
912 			if (def)
913 				goto error;
914 			def = 1;
915 			result->def = parse.idx;
916 			if (!parse.def_uni || !parse.def_multi)
917 				goto error;
918 		} else if (parse.defmgmt)
919 			goto error;
920 		err = cfg80211_validate_key_settings(rdev, &parse.p,
921 						     parse.idx, false, NULL);
922 		if (err)
923 			goto error;
924 		if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
925 		    parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
926 			err = -EINVAL;
927 			goto error;
928 		}
929 		result->params[parse.idx].cipher = parse.p.cipher;
930 		result->params[parse.idx].key_len = parse.p.key_len;
931 		result->params[parse.idx].key = result->data[parse.idx];
932 		memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
933 
934 		/* must be WEP key if we got here */
935 		if (no_ht)
936 			*no_ht = true;
937 	}
938 
939 	if (result->def < 0) {
940 		err = -EINVAL;
941 		goto error;
942 	}
943 
944 	return result;
945  error:
946 	kfree(result);
947 	return ERR_PTR(err);
948 }
949 
950 static int nl80211_key_allowed(struct wireless_dev *wdev)
951 {
952 	ASSERT_WDEV_LOCK(wdev);
953 
954 	switch (wdev->iftype) {
955 	case NL80211_IFTYPE_AP:
956 	case NL80211_IFTYPE_AP_VLAN:
957 	case NL80211_IFTYPE_P2P_GO:
958 	case NL80211_IFTYPE_MESH_POINT:
959 		break;
960 	case NL80211_IFTYPE_ADHOC:
961 	case NL80211_IFTYPE_STATION:
962 	case NL80211_IFTYPE_P2P_CLIENT:
963 		if (!wdev->current_bss)
964 			return -ENOLINK;
965 		break;
966 	case NL80211_IFTYPE_UNSPECIFIED:
967 	case NL80211_IFTYPE_OCB:
968 	case NL80211_IFTYPE_MONITOR:
969 	case NL80211_IFTYPE_NAN:
970 	case NL80211_IFTYPE_P2P_DEVICE:
971 	case NL80211_IFTYPE_WDS:
972 	case NUM_NL80211_IFTYPES:
973 		return -EINVAL;
974 	}
975 
976 	return 0;
977 }
978 
979 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
980 							struct nlattr *tb)
981 {
982 	struct ieee80211_channel *chan;
983 
984 	if (tb == NULL)
985 		return NULL;
986 	chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
987 	if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
988 		return NULL;
989 	return chan;
990 }
991 
992 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
993 {
994 	struct nlattr *nl_modes = nla_nest_start(msg, attr);
995 	int i;
996 
997 	if (!nl_modes)
998 		goto nla_put_failure;
999 
1000 	i = 0;
1001 	while (ifmodes) {
1002 		if ((ifmodes & 1) && nla_put_flag(msg, i))
1003 			goto nla_put_failure;
1004 		ifmodes >>= 1;
1005 		i++;
1006 	}
1007 
1008 	nla_nest_end(msg, nl_modes);
1009 	return 0;
1010 
1011 nla_put_failure:
1012 	return -ENOBUFS;
1013 }
1014 
1015 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1016 					  struct sk_buff *msg,
1017 					  bool large)
1018 {
1019 	struct nlattr *nl_combis;
1020 	int i, j;
1021 
1022 	nl_combis = nla_nest_start(msg,
1023 				NL80211_ATTR_INTERFACE_COMBINATIONS);
1024 	if (!nl_combis)
1025 		goto nla_put_failure;
1026 
1027 	for (i = 0; i < wiphy->n_iface_combinations; i++) {
1028 		const struct ieee80211_iface_combination *c;
1029 		struct nlattr *nl_combi, *nl_limits;
1030 
1031 		c = &wiphy->iface_combinations[i];
1032 
1033 		nl_combi = nla_nest_start(msg, i + 1);
1034 		if (!nl_combi)
1035 			goto nla_put_failure;
1036 
1037 		nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1038 		if (!nl_limits)
1039 			goto nla_put_failure;
1040 
1041 		for (j = 0; j < c->n_limits; j++) {
1042 			struct nlattr *nl_limit;
1043 
1044 			nl_limit = nla_nest_start(msg, j + 1);
1045 			if (!nl_limit)
1046 				goto nla_put_failure;
1047 			if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1048 					c->limits[j].max))
1049 				goto nla_put_failure;
1050 			if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1051 						c->limits[j].types))
1052 				goto nla_put_failure;
1053 			nla_nest_end(msg, nl_limit);
1054 		}
1055 
1056 		nla_nest_end(msg, nl_limits);
1057 
1058 		if (c->beacon_int_infra_match &&
1059 		    nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1060 			goto nla_put_failure;
1061 		if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1062 				c->num_different_channels) ||
1063 		    nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1064 				c->max_interfaces))
1065 			goto nla_put_failure;
1066 		if (large &&
1067 		    (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1068 				c->radar_detect_widths) ||
1069 		     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1070 				c->radar_detect_regions)))
1071 			goto nla_put_failure;
1072 		if (c->beacon_int_min_gcd &&
1073 		    nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1074 				c->beacon_int_min_gcd))
1075 			goto nla_put_failure;
1076 
1077 		nla_nest_end(msg, nl_combi);
1078 	}
1079 
1080 	nla_nest_end(msg, nl_combis);
1081 
1082 	return 0;
1083 nla_put_failure:
1084 	return -ENOBUFS;
1085 }
1086 
1087 #ifdef CONFIG_PM
1088 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1089 					struct sk_buff *msg)
1090 {
1091 	const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1092 	struct nlattr *nl_tcp;
1093 
1094 	if (!tcp)
1095 		return 0;
1096 
1097 	nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1098 	if (!nl_tcp)
1099 		return -ENOBUFS;
1100 
1101 	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1102 			tcp->data_payload_max))
1103 		return -ENOBUFS;
1104 
1105 	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1106 			tcp->data_payload_max))
1107 		return -ENOBUFS;
1108 
1109 	if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1110 		return -ENOBUFS;
1111 
1112 	if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1113 				sizeof(*tcp->tok), tcp->tok))
1114 		return -ENOBUFS;
1115 
1116 	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1117 			tcp->data_interval_max))
1118 		return -ENOBUFS;
1119 
1120 	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1121 			tcp->wake_payload_max))
1122 		return -ENOBUFS;
1123 
1124 	nla_nest_end(msg, nl_tcp);
1125 	return 0;
1126 }
1127 
1128 static int nl80211_send_wowlan(struct sk_buff *msg,
1129 			       struct cfg80211_registered_device *rdev,
1130 			       bool large)
1131 {
1132 	struct nlattr *nl_wowlan;
1133 
1134 	if (!rdev->wiphy.wowlan)
1135 		return 0;
1136 
1137 	nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1138 	if (!nl_wowlan)
1139 		return -ENOBUFS;
1140 
1141 	if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1142 	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1143 	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1144 	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1145 	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1146 	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1147 	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1148 	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1149 	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1150 	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1151 	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1152 	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1153 	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1154 	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1155 	    ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1156 	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1157 		return -ENOBUFS;
1158 
1159 	if (rdev->wiphy.wowlan->n_patterns) {
1160 		struct nl80211_pattern_support pat = {
1161 			.max_patterns = rdev->wiphy.wowlan->n_patterns,
1162 			.min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1163 			.max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1164 			.max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1165 		};
1166 
1167 		if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1168 			    sizeof(pat), &pat))
1169 			return -ENOBUFS;
1170 	}
1171 
1172 	if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1173 	    nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1174 			rdev->wiphy.wowlan->max_nd_match_sets))
1175 		return -ENOBUFS;
1176 
1177 	if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1178 		return -ENOBUFS;
1179 
1180 	nla_nest_end(msg, nl_wowlan);
1181 
1182 	return 0;
1183 }
1184 #endif
1185 
1186 static int nl80211_send_coalesce(struct sk_buff *msg,
1187 				 struct cfg80211_registered_device *rdev)
1188 {
1189 	struct nl80211_coalesce_rule_support rule;
1190 
1191 	if (!rdev->wiphy.coalesce)
1192 		return 0;
1193 
1194 	rule.max_rules = rdev->wiphy.coalesce->n_rules;
1195 	rule.max_delay = rdev->wiphy.coalesce->max_delay;
1196 	rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1197 	rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1198 	rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1199 	rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1200 
1201 	if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1202 		return -ENOBUFS;
1203 
1204 	return 0;
1205 }
1206 
1207 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1208 				      struct ieee80211_supported_band *sband)
1209 {
1210 	struct nlattr *nl_rates, *nl_rate;
1211 	struct ieee80211_rate *rate;
1212 	int i;
1213 
1214 	/* add HT info */
1215 	if (sband->ht_cap.ht_supported &&
1216 	    (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1217 		     sizeof(sband->ht_cap.mcs),
1218 		     &sband->ht_cap.mcs) ||
1219 	     nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1220 			 sband->ht_cap.cap) ||
1221 	     nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1222 			sband->ht_cap.ampdu_factor) ||
1223 	     nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1224 			sband->ht_cap.ampdu_density)))
1225 		return -ENOBUFS;
1226 
1227 	/* add VHT info */
1228 	if (sband->vht_cap.vht_supported &&
1229 	    (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1230 		     sizeof(sband->vht_cap.vht_mcs),
1231 		     &sband->vht_cap.vht_mcs) ||
1232 	     nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1233 			 sband->vht_cap.cap)))
1234 		return -ENOBUFS;
1235 
1236 	/* add bitrates */
1237 	nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1238 	if (!nl_rates)
1239 		return -ENOBUFS;
1240 
1241 	for (i = 0; i < sband->n_bitrates; i++) {
1242 		nl_rate = nla_nest_start(msg, i);
1243 		if (!nl_rate)
1244 			return -ENOBUFS;
1245 
1246 		rate = &sband->bitrates[i];
1247 		if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1248 				rate->bitrate))
1249 			return -ENOBUFS;
1250 		if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1251 		    nla_put_flag(msg,
1252 				 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1253 			return -ENOBUFS;
1254 
1255 		nla_nest_end(msg, nl_rate);
1256 	}
1257 
1258 	nla_nest_end(msg, nl_rates);
1259 
1260 	return 0;
1261 }
1262 
1263 static int
1264 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1265 			 const struct ieee80211_txrx_stypes *mgmt_stypes)
1266 {
1267 	u16 stypes;
1268 	struct nlattr *nl_ftypes, *nl_ifs;
1269 	enum nl80211_iftype ift;
1270 	int i;
1271 
1272 	if (!mgmt_stypes)
1273 		return 0;
1274 
1275 	nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1276 	if (!nl_ifs)
1277 		return -ENOBUFS;
1278 
1279 	for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1280 		nl_ftypes = nla_nest_start(msg, ift);
1281 		if (!nl_ftypes)
1282 			return -ENOBUFS;
1283 		i = 0;
1284 		stypes = mgmt_stypes[ift].tx;
1285 		while (stypes) {
1286 			if ((stypes & 1) &&
1287 			    nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1288 					(i << 4) | IEEE80211_FTYPE_MGMT))
1289 				return -ENOBUFS;
1290 			stypes >>= 1;
1291 			i++;
1292 		}
1293 		nla_nest_end(msg, nl_ftypes);
1294 	}
1295 
1296 	nla_nest_end(msg, nl_ifs);
1297 
1298 	nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1299 	if (!nl_ifs)
1300 		return -ENOBUFS;
1301 
1302 	for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1303 		nl_ftypes = nla_nest_start(msg, ift);
1304 		if (!nl_ftypes)
1305 			return -ENOBUFS;
1306 		i = 0;
1307 		stypes = mgmt_stypes[ift].rx;
1308 		while (stypes) {
1309 			if ((stypes & 1) &&
1310 			    nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1311 					(i << 4) | IEEE80211_FTYPE_MGMT))
1312 				return -ENOBUFS;
1313 			stypes >>= 1;
1314 			i++;
1315 		}
1316 		nla_nest_end(msg, nl_ftypes);
1317 	}
1318 	nla_nest_end(msg, nl_ifs);
1319 
1320 	return 0;
1321 }
1322 
1323 #define CMD(op, n)							\
1324 	 do {								\
1325 		if (rdev->ops->op) {					\
1326 			i++;						\
1327 			if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) 	\
1328 				goto nla_put_failure;			\
1329 		}							\
1330 	} while (0)
1331 
1332 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1333 					struct sk_buff *msg)
1334 {
1335 	int i = 0;
1336 
1337 	/*
1338 	 * do *NOT* add anything into this function, new things need to be
1339 	 * advertised only to new versions of userspace that can deal with
1340 	 * the split (and they can't possibly care about new features...
1341 	 */
1342 	CMD(add_virtual_intf, NEW_INTERFACE);
1343 	CMD(change_virtual_intf, SET_INTERFACE);
1344 	CMD(add_key, NEW_KEY);
1345 	CMD(start_ap, START_AP);
1346 	CMD(add_station, NEW_STATION);
1347 	CMD(add_mpath, NEW_MPATH);
1348 	CMD(update_mesh_config, SET_MESH_CONFIG);
1349 	CMD(change_bss, SET_BSS);
1350 	CMD(auth, AUTHENTICATE);
1351 	CMD(assoc, ASSOCIATE);
1352 	CMD(deauth, DEAUTHENTICATE);
1353 	CMD(disassoc, DISASSOCIATE);
1354 	CMD(join_ibss, JOIN_IBSS);
1355 	CMD(join_mesh, JOIN_MESH);
1356 	CMD(set_pmksa, SET_PMKSA);
1357 	CMD(del_pmksa, DEL_PMKSA);
1358 	CMD(flush_pmksa, FLUSH_PMKSA);
1359 	if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1360 		CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1361 	CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1362 	CMD(mgmt_tx, FRAME);
1363 	CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1364 	if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1365 		i++;
1366 		if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1367 			goto nla_put_failure;
1368 	}
1369 	if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1370 	    rdev->ops->join_mesh) {
1371 		i++;
1372 		if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1373 			goto nla_put_failure;
1374 	}
1375 	CMD(set_wds_peer, SET_WDS_PEER);
1376 	if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1377 		CMD(tdls_mgmt, TDLS_MGMT);
1378 		CMD(tdls_oper, TDLS_OPER);
1379 	}
1380 	if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1381 		CMD(sched_scan_start, START_SCHED_SCAN);
1382 	CMD(probe_client, PROBE_CLIENT);
1383 	CMD(set_noack_map, SET_NOACK_MAP);
1384 	if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1385 		i++;
1386 		if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1387 			goto nla_put_failure;
1388 	}
1389 	CMD(start_p2p_device, START_P2P_DEVICE);
1390 	CMD(set_mcast_rate, SET_MCAST_RATE);
1391 #ifdef CONFIG_NL80211_TESTMODE
1392 	CMD(testmode_cmd, TESTMODE);
1393 #endif
1394 
1395 	if (rdev->ops->connect || rdev->ops->auth) {
1396 		i++;
1397 		if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1398 			goto nla_put_failure;
1399 	}
1400 
1401 	if (rdev->ops->disconnect || rdev->ops->deauth) {
1402 		i++;
1403 		if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1404 			goto nla_put_failure;
1405 	}
1406 
1407 	return i;
1408  nla_put_failure:
1409 	return -ENOBUFS;
1410 }
1411 
1412 struct nl80211_dump_wiphy_state {
1413 	s64 filter_wiphy;
1414 	long start;
1415 	long split_start, band_start, chan_start, capa_start;
1416 	bool split;
1417 };
1418 
1419 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1420 			      enum nl80211_commands cmd,
1421 			      struct sk_buff *msg, u32 portid, u32 seq,
1422 			      int flags, struct nl80211_dump_wiphy_state *state)
1423 {
1424 	void *hdr;
1425 	struct nlattr *nl_bands, *nl_band;
1426 	struct nlattr *nl_freqs, *nl_freq;
1427 	struct nlattr *nl_cmds;
1428 	enum nl80211_band band;
1429 	struct ieee80211_channel *chan;
1430 	int i;
1431 	const struct ieee80211_txrx_stypes *mgmt_stypes =
1432 				rdev->wiphy.mgmt_stypes;
1433 	u32 features;
1434 
1435 	hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1436 	if (!hdr)
1437 		return -ENOBUFS;
1438 
1439 	if (WARN_ON(!state))
1440 		return -EINVAL;
1441 
1442 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1443 	    nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1444 			   wiphy_name(&rdev->wiphy)) ||
1445 	    nla_put_u32(msg, NL80211_ATTR_GENERATION,
1446 			cfg80211_rdev_list_generation))
1447 		goto nla_put_failure;
1448 
1449 	if (cmd != NL80211_CMD_NEW_WIPHY)
1450 		goto finish;
1451 
1452 	switch (state->split_start) {
1453 	case 0:
1454 		if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1455 			       rdev->wiphy.retry_short) ||
1456 		    nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1457 			       rdev->wiphy.retry_long) ||
1458 		    nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1459 				rdev->wiphy.frag_threshold) ||
1460 		    nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1461 				rdev->wiphy.rts_threshold) ||
1462 		    nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1463 			       rdev->wiphy.coverage_class) ||
1464 		    nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1465 			       rdev->wiphy.max_scan_ssids) ||
1466 		    nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1467 			       rdev->wiphy.max_sched_scan_ssids) ||
1468 		    nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1469 				rdev->wiphy.max_scan_ie_len) ||
1470 		    nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1471 				rdev->wiphy.max_sched_scan_ie_len) ||
1472 		    nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1473 			       rdev->wiphy.max_match_sets) ||
1474 		    nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1475 				rdev->wiphy.max_sched_scan_plans) ||
1476 		    nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1477 				rdev->wiphy.max_sched_scan_plan_interval) ||
1478 		    nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1479 				rdev->wiphy.max_sched_scan_plan_iterations))
1480 			goto nla_put_failure;
1481 
1482 		if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1483 		    nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1484 			goto nla_put_failure;
1485 		if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1486 		    nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1487 			goto nla_put_failure;
1488 		if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1489 		    nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1490 			goto nla_put_failure;
1491 		if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1492 		    nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1493 			goto nla_put_failure;
1494 		if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1495 		    nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1496 			goto nla_put_failure;
1497 		if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1498 		    nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1499 			goto nla_put_failure;
1500 		state->split_start++;
1501 		if (state->split)
1502 			break;
1503 	case 1:
1504 		if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1505 			    sizeof(u32) * rdev->wiphy.n_cipher_suites,
1506 			    rdev->wiphy.cipher_suites))
1507 			goto nla_put_failure;
1508 
1509 		if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1510 			       rdev->wiphy.max_num_pmkids))
1511 			goto nla_put_failure;
1512 
1513 		if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1514 		    nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1515 			goto nla_put_failure;
1516 
1517 		if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1518 				rdev->wiphy.available_antennas_tx) ||
1519 		    nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1520 				rdev->wiphy.available_antennas_rx))
1521 			goto nla_put_failure;
1522 
1523 		if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1524 		    nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1525 				rdev->wiphy.probe_resp_offload))
1526 			goto nla_put_failure;
1527 
1528 		if ((rdev->wiphy.available_antennas_tx ||
1529 		     rdev->wiphy.available_antennas_rx) &&
1530 		    rdev->ops->get_antenna) {
1531 			u32 tx_ant = 0, rx_ant = 0;
1532 			int res;
1533 
1534 			res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1535 			if (!res) {
1536 				if (nla_put_u32(msg,
1537 						NL80211_ATTR_WIPHY_ANTENNA_TX,
1538 						tx_ant) ||
1539 				    nla_put_u32(msg,
1540 						NL80211_ATTR_WIPHY_ANTENNA_RX,
1541 						rx_ant))
1542 					goto nla_put_failure;
1543 			}
1544 		}
1545 
1546 		state->split_start++;
1547 		if (state->split)
1548 			break;
1549 	case 2:
1550 		if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1551 					rdev->wiphy.interface_modes))
1552 				goto nla_put_failure;
1553 		state->split_start++;
1554 		if (state->split)
1555 			break;
1556 	case 3:
1557 		nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1558 		if (!nl_bands)
1559 			goto nla_put_failure;
1560 
1561 		for (band = state->band_start;
1562 		     band < NUM_NL80211_BANDS; band++) {
1563 			struct ieee80211_supported_band *sband;
1564 
1565 			sband = rdev->wiphy.bands[band];
1566 
1567 			if (!sband)
1568 				continue;
1569 
1570 			nl_band = nla_nest_start(msg, band);
1571 			if (!nl_band)
1572 				goto nla_put_failure;
1573 
1574 			switch (state->chan_start) {
1575 			case 0:
1576 				if (nl80211_send_band_rateinfo(msg, sband))
1577 					goto nla_put_failure;
1578 				state->chan_start++;
1579 				if (state->split)
1580 					break;
1581 			default:
1582 				/* add frequencies */
1583 				nl_freqs = nla_nest_start(
1584 					msg, NL80211_BAND_ATTR_FREQS);
1585 				if (!nl_freqs)
1586 					goto nla_put_failure;
1587 
1588 				for (i = state->chan_start - 1;
1589 				     i < sband->n_channels;
1590 				     i++) {
1591 					nl_freq = nla_nest_start(msg, i);
1592 					if (!nl_freq)
1593 						goto nla_put_failure;
1594 
1595 					chan = &sband->channels[i];
1596 
1597 					if (nl80211_msg_put_channel(
1598 							msg, chan,
1599 							state->split))
1600 						goto nla_put_failure;
1601 
1602 					nla_nest_end(msg, nl_freq);
1603 					if (state->split)
1604 						break;
1605 				}
1606 				if (i < sband->n_channels)
1607 					state->chan_start = i + 2;
1608 				else
1609 					state->chan_start = 0;
1610 				nla_nest_end(msg, nl_freqs);
1611 			}
1612 
1613 			nla_nest_end(msg, nl_band);
1614 
1615 			if (state->split) {
1616 				/* start again here */
1617 				if (state->chan_start)
1618 					band--;
1619 				break;
1620 			}
1621 		}
1622 		nla_nest_end(msg, nl_bands);
1623 
1624 		if (band < NUM_NL80211_BANDS)
1625 			state->band_start = band + 1;
1626 		else
1627 			state->band_start = 0;
1628 
1629 		/* if bands & channels are done, continue outside */
1630 		if (state->band_start == 0 && state->chan_start == 0)
1631 			state->split_start++;
1632 		if (state->split)
1633 			break;
1634 	case 4:
1635 		nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1636 		if (!nl_cmds)
1637 			goto nla_put_failure;
1638 
1639 		i = nl80211_add_commands_unsplit(rdev, msg);
1640 		if (i < 0)
1641 			goto nla_put_failure;
1642 		if (state->split) {
1643 			CMD(crit_proto_start, CRIT_PROTOCOL_START);
1644 			CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1645 			if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1646 				CMD(channel_switch, CHANNEL_SWITCH);
1647 			CMD(set_qos_map, SET_QOS_MAP);
1648 			if (rdev->wiphy.features &
1649 					NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1650 				CMD(add_tx_ts, ADD_TX_TS);
1651 			CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1652 			CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1653 		}
1654 #undef CMD
1655 
1656 		nla_nest_end(msg, nl_cmds);
1657 		state->split_start++;
1658 		if (state->split)
1659 			break;
1660 	case 5:
1661 		if (rdev->ops->remain_on_channel &&
1662 		    (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1663 		    nla_put_u32(msg,
1664 				NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1665 				rdev->wiphy.max_remain_on_channel_duration))
1666 			goto nla_put_failure;
1667 
1668 		if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1669 		    nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1670 			goto nla_put_failure;
1671 
1672 		if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1673 			goto nla_put_failure;
1674 		state->split_start++;
1675 		if (state->split)
1676 			break;
1677 	case 6:
1678 #ifdef CONFIG_PM
1679 		if (nl80211_send_wowlan(msg, rdev, state->split))
1680 			goto nla_put_failure;
1681 		state->split_start++;
1682 		if (state->split)
1683 			break;
1684 #else
1685 		state->split_start++;
1686 #endif
1687 	case 7:
1688 		if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1689 					rdev->wiphy.software_iftypes))
1690 			goto nla_put_failure;
1691 
1692 		if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1693 						   state->split))
1694 			goto nla_put_failure;
1695 
1696 		state->split_start++;
1697 		if (state->split)
1698 			break;
1699 	case 8:
1700 		if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1701 		    nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1702 				rdev->wiphy.ap_sme_capa))
1703 			goto nla_put_failure;
1704 
1705 		features = rdev->wiphy.features;
1706 		/*
1707 		 * We can only add the per-channel limit information if the
1708 		 * dump is split, otherwise it makes it too big. Therefore
1709 		 * only advertise it in that case.
1710 		 */
1711 		if (state->split)
1712 			features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1713 		if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1714 			goto nla_put_failure;
1715 
1716 		if (rdev->wiphy.ht_capa_mod_mask &&
1717 		    nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1718 			    sizeof(*rdev->wiphy.ht_capa_mod_mask),
1719 			    rdev->wiphy.ht_capa_mod_mask))
1720 			goto nla_put_failure;
1721 
1722 		if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1723 		    rdev->wiphy.max_acl_mac_addrs &&
1724 		    nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1725 				rdev->wiphy.max_acl_mac_addrs))
1726 			goto nla_put_failure;
1727 
1728 		/*
1729 		 * Any information below this point is only available to
1730 		 * applications that can deal with it being split. This
1731 		 * helps ensure that newly added capabilities don't break
1732 		 * older tools by overrunning their buffers.
1733 		 *
1734 		 * We still increment split_start so that in the split
1735 		 * case we'll continue with more data in the next round,
1736 		 * but break unconditionally so unsplit data stops here.
1737 		 */
1738 		state->split_start++;
1739 		break;
1740 	case 9:
1741 		if (rdev->wiphy.extended_capabilities &&
1742 		    (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1743 			     rdev->wiphy.extended_capabilities_len,
1744 			     rdev->wiphy.extended_capabilities) ||
1745 		     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1746 			     rdev->wiphy.extended_capabilities_len,
1747 			     rdev->wiphy.extended_capabilities_mask)))
1748 			goto nla_put_failure;
1749 
1750 		if (rdev->wiphy.vht_capa_mod_mask &&
1751 		    nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1752 			    sizeof(*rdev->wiphy.vht_capa_mod_mask),
1753 			    rdev->wiphy.vht_capa_mod_mask))
1754 			goto nla_put_failure;
1755 
1756 		state->split_start++;
1757 		break;
1758 	case 10:
1759 		if (nl80211_send_coalesce(msg, rdev))
1760 			goto nla_put_failure;
1761 
1762 		if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1763 		    (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1764 		     nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1765 			goto nla_put_failure;
1766 
1767 		if (rdev->wiphy.max_ap_assoc_sta &&
1768 		    nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1769 				rdev->wiphy.max_ap_assoc_sta))
1770 			goto nla_put_failure;
1771 
1772 		state->split_start++;
1773 		break;
1774 	case 11:
1775 		if (rdev->wiphy.n_vendor_commands) {
1776 			const struct nl80211_vendor_cmd_info *info;
1777 			struct nlattr *nested;
1778 
1779 			nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1780 			if (!nested)
1781 				goto nla_put_failure;
1782 
1783 			for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1784 				info = &rdev->wiphy.vendor_commands[i].info;
1785 				if (nla_put(msg, i + 1, sizeof(*info), info))
1786 					goto nla_put_failure;
1787 			}
1788 			nla_nest_end(msg, nested);
1789 		}
1790 
1791 		if (rdev->wiphy.n_vendor_events) {
1792 			const struct nl80211_vendor_cmd_info *info;
1793 			struct nlattr *nested;
1794 
1795 			nested = nla_nest_start(msg,
1796 						NL80211_ATTR_VENDOR_EVENTS);
1797 			if (!nested)
1798 				goto nla_put_failure;
1799 
1800 			for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1801 				info = &rdev->wiphy.vendor_events[i];
1802 				if (nla_put(msg, i + 1, sizeof(*info), info))
1803 					goto nla_put_failure;
1804 			}
1805 			nla_nest_end(msg, nested);
1806 		}
1807 		state->split_start++;
1808 		break;
1809 	case 12:
1810 		if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1811 		    nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1812 			       rdev->wiphy.max_num_csa_counters))
1813 			goto nla_put_failure;
1814 
1815 		if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1816 		    nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1817 			goto nla_put_failure;
1818 
1819 		if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1820 			    sizeof(rdev->wiphy.ext_features),
1821 			    rdev->wiphy.ext_features))
1822 			goto nla_put_failure;
1823 
1824 		if (rdev->wiphy.bss_select_support) {
1825 			struct nlattr *nested;
1826 			u32 bss_select_support = rdev->wiphy.bss_select_support;
1827 
1828 			nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1829 			if (!nested)
1830 				goto nla_put_failure;
1831 
1832 			i = 0;
1833 			while (bss_select_support) {
1834 				if ((bss_select_support & 1) &&
1835 				    nla_put_flag(msg, i))
1836 					goto nla_put_failure;
1837 				i++;
1838 				bss_select_support >>= 1;
1839 			}
1840 			nla_nest_end(msg, nested);
1841 		}
1842 
1843 		state->split_start++;
1844 		break;
1845 	case 13:
1846 		if (rdev->wiphy.num_iftype_ext_capab &&
1847 		    rdev->wiphy.iftype_ext_capab) {
1848 			struct nlattr *nested_ext_capab, *nested;
1849 
1850 			nested = nla_nest_start(msg,
1851 						NL80211_ATTR_IFTYPE_EXT_CAPA);
1852 			if (!nested)
1853 				goto nla_put_failure;
1854 
1855 			for (i = state->capa_start;
1856 			     i < rdev->wiphy.num_iftype_ext_capab; i++) {
1857 				const struct wiphy_iftype_ext_capab *capab;
1858 
1859 				capab = &rdev->wiphy.iftype_ext_capab[i];
1860 
1861 				nested_ext_capab = nla_nest_start(msg, i);
1862 				if (!nested_ext_capab ||
1863 				    nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1864 						capab->iftype) ||
1865 				    nla_put(msg, NL80211_ATTR_EXT_CAPA,
1866 					    capab->extended_capabilities_len,
1867 					    capab->extended_capabilities) ||
1868 				    nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1869 					    capab->extended_capabilities_len,
1870 					    capab->extended_capabilities_mask))
1871 					goto nla_put_failure;
1872 
1873 				nla_nest_end(msg, nested_ext_capab);
1874 				if (state->split)
1875 					break;
1876 			}
1877 			nla_nest_end(msg, nested);
1878 			if (i < rdev->wiphy.num_iftype_ext_capab) {
1879 				state->capa_start = i + 1;
1880 				break;
1881 			}
1882 		}
1883 
1884 		/* done */
1885 		state->split_start = 0;
1886 		break;
1887 	}
1888  finish:
1889 	genlmsg_end(msg, hdr);
1890 	return 0;
1891 
1892  nla_put_failure:
1893 	genlmsg_cancel(msg, hdr);
1894 	return -EMSGSIZE;
1895 }
1896 
1897 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1898 				    struct netlink_callback *cb,
1899 				    struct nl80211_dump_wiphy_state *state)
1900 {
1901 	struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1902 	int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1903 			      tb, nl80211_fam.maxattr, nl80211_policy);
1904 	/* ignore parse errors for backward compatibility */
1905 	if (ret)
1906 		return 0;
1907 
1908 	state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1909 	if (tb[NL80211_ATTR_WIPHY])
1910 		state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1911 	if (tb[NL80211_ATTR_WDEV])
1912 		state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1913 	if (tb[NL80211_ATTR_IFINDEX]) {
1914 		struct net_device *netdev;
1915 		struct cfg80211_registered_device *rdev;
1916 		int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1917 
1918 		netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1919 		if (!netdev)
1920 			return -ENODEV;
1921 		if (netdev->ieee80211_ptr) {
1922 			rdev = wiphy_to_rdev(
1923 				netdev->ieee80211_ptr->wiphy);
1924 			state->filter_wiphy = rdev->wiphy_idx;
1925 		}
1926 	}
1927 
1928 	return 0;
1929 }
1930 
1931 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1932 {
1933 	int idx = 0, ret;
1934 	struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1935 	struct cfg80211_registered_device *rdev;
1936 
1937 	rtnl_lock();
1938 	if (!state) {
1939 		state = kzalloc(sizeof(*state), GFP_KERNEL);
1940 		if (!state) {
1941 			rtnl_unlock();
1942 			return -ENOMEM;
1943 		}
1944 		state->filter_wiphy = -1;
1945 		ret = nl80211_dump_wiphy_parse(skb, cb, state);
1946 		if (ret) {
1947 			kfree(state);
1948 			rtnl_unlock();
1949 			return ret;
1950 		}
1951 		cb->args[0] = (long)state;
1952 	}
1953 
1954 	list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1955 		if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1956 			continue;
1957 		if (++idx <= state->start)
1958 			continue;
1959 		if (state->filter_wiphy != -1 &&
1960 		    state->filter_wiphy != rdev->wiphy_idx)
1961 			continue;
1962 		/* attempt to fit multiple wiphy data chunks into the skb */
1963 		do {
1964 			ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1965 						 skb,
1966 						 NETLINK_CB(cb->skb).portid,
1967 						 cb->nlh->nlmsg_seq,
1968 						 NLM_F_MULTI, state);
1969 			if (ret < 0) {
1970 				/*
1971 				 * If sending the wiphy data didn't fit (ENOBUFS
1972 				 * or EMSGSIZE returned), this SKB is still
1973 				 * empty (so it's not too big because another
1974 				 * wiphy dataset is already in the skb) and
1975 				 * we've not tried to adjust the dump allocation
1976 				 * yet ... then adjust the alloc size to be
1977 				 * bigger, and return 1 but with the empty skb.
1978 				 * This results in an empty message being RX'ed
1979 				 * in userspace, but that is ignored.
1980 				 *
1981 				 * We can then retry with the larger buffer.
1982 				 */
1983 				if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1984 				    !skb->len && !state->split &&
1985 				    cb->min_dump_alloc < 4096) {
1986 					cb->min_dump_alloc = 4096;
1987 					state->split_start = 0;
1988 					rtnl_unlock();
1989 					return 1;
1990 				}
1991 				idx--;
1992 				break;
1993 			}
1994 		} while (state->split_start > 0);
1995 		break;
1996 	}
1997 	rtnl_unlock();
1998 
1999 	state->start = idx;
2000 
2001 	return skb->len;
2002 }
2003 
2004 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2005 {
2006 	kfree((void *)cb->args[0]);
2007 	return 0;
2008 }
2009 
2010 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2011 {
2012 	struct sk_buff *msg;
2013 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
2014 	struct nl80211_dump_wiphy_state state = {};
2015 
2016 	msg = nlmsg_new(4096, GFP_KERNEL);
2017 	if (!msg)
2018 		return -ENOMEM;
2019 
2020 	if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2021 			       info->snd_portid, info->snd_seq, 0,
2022 			       &state) < 0) {
2023 		nlmsg_free(msg);
2024 		return -ENOBUFS;
2025 	}
2026 
2027 	return genlmsg_reply(msg, info);
2028 }
2029 
2030 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2031 	[NL80211_TXQ_ATTR_QUEUE]		= { .type = NLA_U8 },
2032 	[NL80211_TXQ_ATTR_TXOP]			= { .type = NLA_U16 },
2033 	[NL80211_TXQ_ATTR_CWMIN]		= { .type = NLA_U16 },
2034 	[NL80211_TXQ_ATTR_CWMAX]		= { .type = NLA_U16 },
2035 	[NL80211_TXQ_ATTR_AIFS]			= { .type = NLA_U8 },
2036 };
2037 
2038 static int parse_txq_params(struct nlattr *tb[],
2039 			    struct ieee80211_txq_params *txq_params)
2040 {
2041 	if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2042 	    !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2043 	    !tb[NL80211_TXQ_ATTR_AIFS])
2044 		return -EINVAL;
2045 
2046 	txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2047 	txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2048 	txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2049 	txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2050 	txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2051 
2052 	if (txq_params->ac >= NL80211_NUM_ACS)
2053 		return -EINVAL;
2054 
2055 	return 0;
2056 }
2057 
2058 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2059 {
2060 	/*
2061 	 * You can only set the channel explicitly for WDS interfaces,
2062 	 * all others have their channel managed via their respective
2063 	 * "establish a connection" command (connect, join, ...)
2064 	 *
2065 	 * For AP/GO and mesh mode, the channel can be set with the
2066 	 * channel userspace API, but is only stored and passed to the
2067 	 * low-level driver when the AP starts or the mesh is joined.
2068 	 * This is for backward compatibility, userspace can also give
2069 	 * the channel in the start-ap or join-mesh commands instead.
2070 	 *
2071 	 * Monitors are special as they are normally slaved to
2072 	 * whatever else is going on, so they have their own special
2073 	 * operation to set the monitor channel if possible.
2074 	 */
2075 	return !wdev ||
2076 		wdev->iftype == NL80211_IFTYPE_AP ||
2077 		wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2078 		wdev->iftype == NL80211_IFTYPE_MONITOR ||
2079 		wdev->iftype == NL80211_IFTYPE_P2P_GO;
2080 }
2081 
2082 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2083 				 struct genl_info *info,
2084 				 struct cfg80211_chan_def *chandef)
2085 {
2086 	u32 control_freq;
2087 
2088 	if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2089 		return -EINVAL;
2090 
2091 	control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2092 
2093 	chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2094 	chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2095 	chandef->center_freq1 = control_freq;
2096 	chandef->center_freq2 = 0;
2097 
2098 	/* Primary channel not allowed */
2099 	if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2100 		return -EINVAL;
2101 
2102 	if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2103 		enum nl80211_channel_type chantype;
2104 
2105 		chantype = nla_get_u32(
2106 				info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2107 
2108 		switch (chantype) {
2109 		case NL80211_CHAN_NO_HT:
2110 		case NL80211_CHAN_HT20:
2111 		case NL80211_CHAN_HT40PLUS:
2112 		case NL80211_CHAN_HT40MINUS:
2113 			cfg80211_chandef_create(chandef, chandef->chan,
2114 						chantype);
2115 			break;
2116 		default:
2117 			return -EINVAL;
2118 		}
2119 	} else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2120 		chandef->width =
2121 			nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2122 		if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2123 			chandef->center_freq1 =
2124 				nla_get_u32(
2125 					info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2126 		if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2127 			chandef->center_freq2 =
2128 				nla_get_u32(
2129 					info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2130 	}
2131 
2132 	if (!cfg80211_chandef_valid(chandef))
2133 		return -EINVAL;
2134 
2135 	if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2136 				     IEEE80211_CHAN_DISABLED))
2137 		return -EINVAL;
2138 
2139 	if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2140 	     chandef->width == NL80211_CHAN_WIDTH_10) &&
2141 	    !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2142 		return -EINVAL;
2143 
2144 	return 0;
2145 }
2146 
2147 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2148 				 struct net_device *dev,
2149 				 struct genl_info *info)
2150 {
2151 	struct cfg80211_chan_def chandef;
2152 	int result;
2153 	enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2154 	struct wireless_dev *wdev = NULL;
2155 
2156 	if (dev)
2157 		wdev = dev->ieee80211_ptr;
2158 	if (!nl80211_can_set_dev_channel(wdev))
2159 		return -EOPNOTSUPP;
2160 	if (wdev)
2161 		iftype = wdev->iftype;
2162 
2163 	result = nl80211_parse_chandef(rdev, info, &chandef);
2164 	if (result)
2165 		return result;
2166 
2167 	switch (iftype) {
2168 	case NL80211_IFTYPE_AP:
2169 	case NL80211_IFTYPE_P2P_GO:
2170 		if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2171 						   iftype)) {
2172 			result = -EINVAL;
2173 			break;
2174 		}
2175 		if (wdev->beacon_interval) {
2176 			if (!dev || !rdev->ops->set_ap_chanwidth ||
2177 			    !(rdev->wiphy.features &
2178 			      NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2179 				result = -EBUSY;
2180 				break;
2181 			}
2182 
2183 			/* Only allow dynamic channel width changes */
2184 			if (chandef.chan != wdev->preset_chandef.chan) {
2185 				result = -EBUSY;
2186 				break;
2187 			}
2188 			result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2189 			if (result)
2190 				break;
2191 		}
2192 		wdev->preset_chandef = chandef;
2193 		result = 0;
2194 		break;
2195 	case NL80211_IFTYPE_MESH_POINT:
2196 		result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2197 		break;
2198 	case NL80211_IFTYPE_MONITOR:
2199 		result = cfg80211_set_monitor_channel(rdev, &chandef);
2200 		break;
2201 	default:
2202 		result = -EINVAL;
2203 	}
2204 
2205 	return result;
2206 }
2207 
2208 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2209 {
2210 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
2211 	struct net_device *netdev = info->user_ptr[1];
2212 
2213 	return __nl80211_set_channel(rdev, netdev, info);
2214 }
2215 
2216 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2217 {
2218 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
2219 	struct net_device *dev = info->user_ptr[1];
2220 	struct wireless_dev *wdev = dev->ieee80211_ptr;
2221 	const u8 *bssid;
2222 
2223 	if (!info->attrs[NL80211_ATTR_MAC])
2224 		return -EINVAL;
2225 
2226 	if (netif_running(dev))
2227 		return -EBUSY;
2228 
2229 	if (!rdev->ops->set_wds_peer)
2230 		return -EOPNOTSUPP;
2231 
2232 	if (wdev->iftype != NL80211_IFTYPE_WDS)
2233 		return -EOPNOTSUPP;
2234 
2235 	bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2236 	return rdev_set_wds_peer(rdev, dev, bssid);
2237 }
2238 
2239 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2240 {
2241 	struct cfg80211_registered_device *rdev;
2242 	struct net_device *netdev = NULL;
2243 	struct wireless_dev *wdev;
2244 	int result = 0, rem_txq_params = 0;
2245 	struct nlattr *nl_txq_params;
2246 	u32 changed;
2247 	u8 retry_short = 0, retry_long = 0;
2248 	u32 frag_threshold = 0, rts_threshold = 0;
2249 	u8 coverage_class = 0;
2250 
2251 	ASSERT_RTNL();
2252 
2253 	/*
2254 	 * Try to find the wiphy and netdev. Normally this
2255 	 * function shouldn't need the netdev, but this is
2256 	 * done for backward compatibility -- previously
2257 	 * setting the channel was done per wiphy, but now
2258 	 * it is per netdev. Previous userland like hostapd
2259 	 * also passed a netdev to set_wiphy, so that it is
2260 	 * possible to let that go to the right netdev!
2261 	 */
2262 
2263 	if (info->attrs[NL80211_ATTR_IFINDEX]) {
2264 		int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2265 
2266 		netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2267 		if (netdev && netdev->ieee80211_ptr)
2268 			rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2269 		else
2270 			netdev = NULL;
2271 	}
2272 
2273 	if (!netdev) {
2274 		rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2275 						  info->attrs);
2276 		if (IS_ERR(rdev))
2277 			return PTR_ERR(rdev);
2278 		wdev = NULL;
2279 		netdev = NULL;
2280 		result = 0;
2281 	} else
2282 		wdev = netdev->ieee80211_ptr;
2283 
2284 	/*
2285 	 * end workaround code, by now the rdev is available
2286 	 * and locked, and wdev may or may not be NULL.
2287 	 */
2288 
2289 	if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2290 		result = cfg80211_dev_rename(
2291 			rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2292 
2293 	if (result)
2294 		return result;
2295 
2296 	if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2297 		struct ieee80211_txq_params txq_params;
2298 		struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2299 
2300 		if (!rdev->ops->set_txq_params)
2301 			return -EOPNOTSUPP;
2302 
2303 		if (!netdev)
2304 			return -EINVAL;
2305 
2306 		if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2307 		    netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2308 			return -EINVAL;
2309 
2310 		if (!netif_running(netdev))
2311 			return -ENETDOWN;
2312 
2313 		nla_for_each_nested(nl_txq_params,
2314 				    info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2315 				    rem_txq_params) {
2316 			result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2317 						  nl_txq_params,
2318 						  txq_params_policy);
2319 			if (result)
2320 				return result;
2321 			result = parse_txq_params(tb, &txq_params);
2322 			if (result)
2323 				return result;
2324 
2325 			result = rdev_set_txq_params(rdev, netdev,
2326 						     &txq_params);
2327 			if (result)
2328 				return result;
2329 		}
2330 	}
2331 
2332 	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2333 		result = __nl80211_set_channel(
2334 			rdev,
2335 			nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2336 			info);
2337 		if (result)
2338 			return result;
2339 	}
2340 
2341 	if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2342 		struct wireless_dev *txp_wdev = wdev;
2343 		enum nl80211_tx_power_setting type;
2344 		int idx, mbm = 0;
2345 
2346 		if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2347 			txp_wdev = NULL;
2348 
2349 		if (!rdev->ops->set_tx_power)
2350 			return -EOPNOTSUPP;
2351 
2352 		idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2353 		type = nla_get_u32(info->attrs[idx]);
2354 
2355 		if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2356 		    (type != NL80211_TX_POWER_AUTOMATIC))
2357 			return -EINVAL;
2358 
2359 		if (type != NL80211_TX_POWER_AUTOMATIC) {
2360 			idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2361 			mbm = nla_get_u32(info->attrs[idx]);
2362 		}
2363 
2364 		result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2365 		if (result)
2366 			return result;
2367 	}
2368 
2369 	if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2370 	    info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2371 		u32 tx_ant, rx_ant;
2372 
2373 		if ((!rdev->wiphy.available_antennas_tx &&
2374 		     !rdev->wiphy.available_antennas_rx) ||
2375 		    !rdev->ops->set_antenna)
2376 			return -EOPNOTSUPP;
2377 
2378 		tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2379 		rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2380 
2381 		/* reject antenna configurations which don't match the
2382 		 * available antenna masks, except for the "all" mask */
2383 		if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2384 		    (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2385 			return -EINVAL;
2386 
2387 		tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2388 		rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2389 
2390 		result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2391 		if (result)
2392 			return result;
2393 	}
2394 
2395 	changed = 0;
2396 
2397 	if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2398 		retry_short = nla_get_u8(
2399 			info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2400 		if (retry_short == 0)
2401 			return -EINVAL;
2402 
2403 		changed |= WIPHY_PARAM_RETRY_SHORT;
2404 	}
2405 
2406 	if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2407 		retry_long = nla_get_u8(
2408 			info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2409 		if (retry_long == 0)
2410 			return -EINVAL;
2411 
2412 		changed |= WIPHY_PARAM_RETRY_LONG;
2413 	}
2414 
2415 	if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2416 		frag_threshold = nla_get_u32(
2417 			info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2418 		if (frag_threshold < 256)
2419 			return -EINVAL;
2420 
2421 		if (frag_threshold != (u32) -1) {
2422 			/*
2423 			 * Fragments (apart from the last one) are required to
2424 			 * have even length. Make the fragmentation code
2425 			 * simpler by stripping LSB should someone try to use
2426 			 * odd threshold value.
2427 			 */
2428 			frag_threshold &= ~0x1;
2429 		}
2430 		changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2431 	}
2432 
2433 	if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2434 		rts_threshold = nla_get_u32(
2435 			info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2436 		changed |= WIPHY_PARAM_RTS_THRESHOLD;
2437 	}
2438 
2439 	if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2440 		if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2441 			return -EINVAL;
2442 
2443 		coverage_class = nla_get_u8(
2444 			info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2445 		changed |= WIPHY_PARAM_COVERAGE_CLASS;
2446 	}
2447 
2448 	if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2449 		if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2450 			return -EOPNOTSUPP;
2451 
2452 		changed |= WIPHY_PARAM_DYN_ACK;
2453 	}
2454 
2455 	if (changed) {
2456 		u8 old_retry_short, old_retry_long;
2457 		u32 old_frag_threshold, old_rts_threshold;
2458 		u8 old_coverage_class;
2459 
2460 		if (!rdev->ops->set_wiphy_params)
2461 			return -EOPNOTSUPP;
2462 
2463 		old_retry_short = rdev->wiphy.retry_short;
2464 		old_retry_long = rdev->wiphy.retry_long;
2465 		old_frag_threshold = rdev->wiphy.frag_threshold;
2466 		old_rts_threshold = rdev->wiphy.rts_threshold;
2467 		old_coverage_class = rdev->wiphy.coverage_class;
2468 
2469 		if (changed & WIPHY_PARAM_RETRY_SHORT)
2470 			rdev->wiphy.retry_short = retry_short;
2471 		if (changed & WIPHY_PARAM_RETRY_LONG)
2472 			rdev->wiphy.retry_long = retry_long;
2473 		if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2474 			rdev->wiphy.frag_threshold = frag_threshold;
2475 		if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2476 			rdev->wiphy.rts_threshold = rts_threshold;
2477 		if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2478 			rdev->wiphy.coverage_class = coverage_class;
2479 
2480 		result = rdev_set_wiphy_params(rdev, changed);
2481 		if (result) {
2482 			rdev->wiphy.retry_short = old_retry_short;
2483 			rdev->wiphy.retry_long = old_retry_long;
2484 			rdev->wiphy.frag_threshold = old_frag_threshold;
2485 			rdev->wiphy.rts_threshold = old_rts_threshold;
2486 			rdev->wiphy.coverage_class = old_coverage_class;
2487 			return result;
2488 		}
2489 	}
2490 	return 0;
2491 }
2492 
2493 static inline u64 wdev_id(struct wireless_dev *wdev)
2494 {
2495 	return (u64)wdev->identifier |
2496 	       ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2497 }
2498 
2499 static int nl80211_send_chandef(struct sk_buff *msg,
2500 				const struct cfg80211_chan_def *chandef)
2501 {
2502 	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2503 		return -EINVAL;
2504 
2505 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2506 			chandef->chan->center_freq))
2507 		return -ENOBUFS;
2508 	switch (chandef->width) {
2509 	case NL80211_CHAN_WIDTH_20_NOHT:
2510 	case NL80211_CHAN_WIDTH_20:
2511 	case NL80211_CHAN_WIDTH_40:
2512 		if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2513 				cfg80211_get_chandef_type(chandef)))
2514 			return -ENOBUFS;
2515 		break;
2516 	default:
2517 		break;
2518 	}
2519 	if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2520 		return -ENOBUFS;
2521 	if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2522 		return -ENOBUFS;
2523 	if (chandef->center_freq2 &&
2524 	    nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2525 		return -ENOBUFS;
2526 	return 0;
2527 }
2528 
2529 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2530 			      struct cfg80211_registered_device *rdev,
2531 			      struct wireless_dev *wdev, bool removal)
2532 {
2533 	struct net_device *dev = wdev->netdev;
2534 	u8 cmd = NL80211_CMD_NEW_INTERFACE;
2535 	void *hdr;
2536 
2537 	if (removal)
2538 		cmd = NL80211_CMD_DEL_INTERFACE;
2539 
2540 	hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2541 	if (!hdr)
2542 		return -1;
2543 
2544 	if (dev &&
2545 	    (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2546 	     nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2547 		goto nla_put_failure;
2548 
2549 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2550 	    nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2551 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2552 			      NL80211_ATTR_PAD) ||
2553 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2554 	    nla_put_u32(msg, NL80211_ATTR_GENERATION,
2555 			rdev->devlist_generation ^
2556 			(cfg80211_rdev_list_generation << 2)))
2557 		goto nla_put_failure;
2558 
2559 	if (rdev->ops->get_channel) {
2560 		int ret;
2561 		struct cfg80211_chan_def chandef;
2562 
2563 		ret = rdev_get_channel(rdev, wdev, &chandef);
2564 		if (ret == 0) {
2565 			if (nl80211_send_chandef(msg, &chandef))
2566 				goto nla_put_failure;
2567 		}
2568 	}
2569 
2570 	if (rdev->ops->get_tx_power) {
2571 		int dbm, ret;
2572 
2573 		ret = rdev_get_tx_power(rdev, wdev, &dbm);
2574 		if (ret == 0 &&
2575 		    nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2576 				DBM_TO_MBM(dbm)))
2577 			goto nla_put_failure;
2578 	}
2579 
2580 	if (wdev->ssid_len) {
2581 		if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2582 			goto nla_put_failure;
2583 	}
2584 
2585 	genlmsg_end(msg, hdr);
2586 	return 0;
2587 
2588  nla_put_failure:
2589 	genlmsg_cancel(msg, hdr);
2590 	return -EMSGSIZE;
2591 }
2592 
2593 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2594 {
2595 	int wp_idx = 0;
2596 	int if_idx = 0;
2597 	int wp_start = cb->args[0];
2598 	int if_start = cb->args[1];
2599 	int filter_wiphy = -1;
2600 	struct cfg80211_registered_device *rdev;
2601 	struct wireless_dev *wdev;
2602 
2603 	rtnl_lock();
2604 	if (!cb->args[2]) {
2605 		struct nl80211_dump_wiphy_state state = {
2606 			.filter_wiphy = -1,
2607 		};
2608 		int ret;
2609 
2610 		ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2611 		if (ret)
2612 			return ret;
2613 
2614 		filter_wiphy = state.filter_wiphy;
2615 
2616 		/*
2617 		 * if filtering, set cb->args[2] to +1 since 0 is the default
2618 		 * value needed to determine that parsing is necessary.
2619 		 */
2620 		if (filter_wiphy >= 0)
2621 			cb->args[2] = filter_wiphy + 1;
2622 		else
2623 			cb->args[2] = -1;
2624 	} else if (cb->args[2] > 0) {
2625 		filter_wiphy = cb->args[2] - 1;
2626 	}
2627 
2628 	list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2629 		if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2630 			continue;
2631 		if (wp_idx < wp_start) {
2632 			wp_idx++;
2633 			continue;
2634 		}
2635 
2636 		if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2637 			continue;
2638 
2639 		if_idx = 0;
2640 
2641 		list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2642 			if (if_idx < if_start) {
2643 				if_idx++;
2644 				continue;
2645 			}
2646 			if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2647 					       cb->nlh->nlmsg_seq, NLM_F_MULTI,
2648 					       rdev, wdev, false) < 0) {
2649 				goto out;
2650 			}
2651 			if_idx++;
2652 		}
2653 
2654 		wp_idx++;
2655 	}
2656  out:
2657 	rtnl_unlock();
2658 
2659 	cb->args[0] = wp_idx;
2660 	cb->args[1] = if_idx;
2661 
2662 	return skb->len;
2663 }
2664 
2665 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2666 {
2667 	struct sk_buff *msg;
2668 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
2669 	struct wireless_dev *wdev = info->user_ptr[1];
2670 
2671 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2672 	if (!msg)
2673 		return -ENOMEM;
2674 
2675 	if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2676 			       rdev, wdev, false) < 0) {
2677 		nlmsg_free(msg);
2678 		return -ENOBUFS;
2679 	}
2680 
2681 	return genlmsg_reply(msg, info);
2682 }
2683 
2684 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2685 	[NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2686 	[NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2687 	[NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2688 	[NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2689 	[NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2690 	[NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2691 };
2692 
2693 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2694 {
2695 	struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2696 	int flag;
2697 
2698 	*mntrflags = 0;
2699 
2700 	if (!nla)
2701 		return -EINVAL;
2702 
2703 	if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2704 			     nla, mntr_flags_policy))
2705 		return -EINVAL;
2706 
2707 	for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2708 		if (flags[flag])
2709 			*mntrflags |= (1<<flag);
2710 
2711 	return 0;
2712 }
2713 
2714 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2715 			       struct net_device *netdev, u8 use_4addr,
2716 			       enum nl80211_iftype iftype)
2717 {
2718 	if (!use_4addr) {
2719 		if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2720 			return -EBUSY;
2721 		return 0;
2722 	}
2723 
2724 	switch (iftype) {
2725 	case NL80211_IFTYPE_AP_VLAN:
2726 		if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2727 			return 0;
2728 		break;
2729 	case NL80211_IFTYPE_STATION:
2730 		if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2731 			return 0;
2732 		break;
2733 	default:
2734 		break;
2735 	}
2736 
2737 	return -EOPNOTSUPP;
2738 }
2739 
2740 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2741 {
2742 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
2743 	struct vif_params params;
2744 	int err;
2745 	enum nl80211_iftype otype, ntype;
2746 	struct net_device *dev = info->user_ptr[1];
2747 	u32 _flags, *flags = NULL;
2748 	bool change = false;
2749 
2750 	memset(&params, 0, sizeof(params));
2751 
2752 	otype = ntype = dev->ieee80211_ptr->iftype;
2753 
2754 	if (info->attrs[NL80211_ATTR_IFTYPE]) {
2755 		ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2756 		if (otype != ntype)
2757 			change = true;
2758 		if (ntype > NL80211_IFTYPE_MAX)
2759 			return -EINVAL;
2760 	}
2761 
2762 	if (info->attrs[NL80211_ATTR_MESH_ID]) {
2763 		struct wireless_dev *wdev = dev->ieee80211_ptr;
2764 
2765 		if (ntype != NL80211_IFTYPE_MESH_POINT)
2766 			return -EINVAL;
2767 		if (netif_running(dev))
2768 			return -EBUSY;
2769 
2770 		wdev_lock(wdev);
2771 		BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2772 			     IEEE80211_MAX_MESH_ID_LEN);
2773 		wdev->mesh_id_up_len =
2774 			nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2775 		memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2776 		       wdev->mesh_id_up_len);
2777 		wdev_unlock(wdev);
2778 	}
2779 
2780 	if (info->attrs[NL80211_ATTR_4ADDR]) {
2781 		params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2782 		change = true;
2783 		err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2784 		if (err)
2785 			return err;
2786 	} else {
2787 		params.use_4addr = -1;
2788 	}
2789 
2790 	if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2791 		if (ntype != NL80211_IFTYPE_MONITOR)
2792 			return -EINVAL;
2793 		err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2794 					  &_flags);
2795 		if (err)
2796 			return err;
2797 
2798 		flags = &_flags;
2799 		change = true;
2800 	}
2801 
2802 	if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2803 		const u8 *mumimo_groups;
2804 		u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2805 
2806 		if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2807 			return -EOPNOTSUPP;
2808 
2809 		mumimo_groups =
2810 			nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2811 
2812 		/* bits 0 and 63 are reserved and must be zero */
2813 		if ((mumimo_groups[0] & BIT(7)) ||
2814 		    (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2815 			return -EINVAL;
2816 
2817 		memcpy(params.vht_mumimo_groups, mumimo_groups,
2818 		       VHT_MUMIMO_GROUPS_DATA_LEN);
2819 		change = true;
2820 	}
2821 
2822 	if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2823 		u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2824 
2825 		if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2826 			return -EOPNOTSUPP;
2827 
2828 		nla_memcpy(params.macaddr,
2829 			   info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2830 			   ETH_ALEN);
2831 		change = true;
2832 	}
2833 
2834 	if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2835 	    !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2836 		return -EOPNOTSUPP;
2837 
2838 	if (change)
2839 		err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2840 	else
2841 		err = 0;
2842 
2843 	if (!err && params.use_4addr != -1)
2844 		dev->ieee80211_ptr->use_4addr = params.use_4addr;
2845 
2846 	return err;
2847 }
2848 
2849 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2850 {
2851 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
2852 	struct vif_params params;
2853 	struct wireless_dev *wdev;
2854 	struct sk_buff *msg;
2855 	int err;
2856 	enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2857 	u32 flags;
2858 
2859 	/* to avoid failing a new interface creation due to pending removal */
2860 	cfg80211_destroy_ifaces(rdev);
2861 
2862 	memset(&params, 0, sizeof(params));
2863 
2864 	if (!info->attrs[NL80211_ATTR_IFNAME])
2865 		return -EINVAL;
2866 
2867 	if (info->attrs[NL80211_ATTR_IFTYPE]) {
2868 		type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2869 		if (type > NL80211_IFTYPE_MAX)
2870 			return -EINVAL;
2871 	}
2872 
2873 	if (!rdev->ops->add_virtual_intf ||
2874 	    !(rdev->wiphy.interface_modes & (1 << type)))
2875 		return -EOPNOTSUPP;
2876 
2877 	if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2878 	     rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2879 	    info->attrs[NL80211_ATTR_MAC]) {
2880 		nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2881 			   ETH_ALEN);
2882 		if (!is_valid_ether_addr(params.macaddr))
2883 			return -EADDRNOTAVAIL;
2884 	}
2885 
2886 	if (info->attrs[NL80211_ATTR_4ADDR]) {
2887 		params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2888 		err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2889 		if (err)
2890 			return err;
2891 	}
2892 
2893 	err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2894 				  info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2895 				  &flags);
2896 
2897 	if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2898 	    !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2899 		return -EOPNOTSUPP;
2900 
2901 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2902 	if (!msg)
2903 		return -ENOMEM;
2904 
2905 	wdev = rdev_add_virtual_intf(rdev,
2906 				nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2907 				NET_NAME_USER, type, err ? NULL : &flags,
2908 				&params);
2909 	if (WARN_ON(!wdev)) {
2910 		nlmsg_free(msg);
2911 		return -EPROTO;
2912 	} else if (IS_ERR(wdev)) {
2913 		nlmsg_free(msg);
2914 		return PTR_ERR(wdev);
2915 	}
2916 
2917 	if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2918 		wdev->owner_nlportid = info->snd_portid;
2919 
2920 	switch (type) {
2921 	case NL80211_IFTYPE_MESH_POINT:
2922 		if (!info->attrs[NL80211_ATTR_MESH_ID])
2923 			break;
2924 		wdev_lock(wdev);
2925 		BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2926 			     IEEE80211_MAX_MESH_ID_LEN);
2927 		wdev->mesh_id_up_len =
2928 			nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2929 		memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2930 		       wdev->mesh_id_up_len);
2931 		wdev_unlock(wdev);
2932 		break;
2933 	case NL80211_IFTYPE_NAN:
2934 	case NL80211_IFTYPE_P2P_DEVICE:
2935 		/*
2936 		 * P2P Device and NAN do not have a netdev, so don't go
2937 		 * through the netdev notifier and must be added here
2938 		 */
2939 		mutex_init(&wdev->mtx);
2940 		INIT_LIST_HEAD(&wdev->event_list);
2941 		spin_lock_init(&wdev->event_lock);
2942 		INIT_LIST_HEAD(&wdev->mgmt_registrations);
2943 		spin_lock_init(&wdev->mgmt_registrations_lock);
2944 
2945 		wdev->identifier = ++rdev->wdev_id;
2946 		list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2947 		rdev->devlist_generation++;
2948 		break;
2949 	default:
2950 		break;
2951 	}
2952 
2953 	if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2954 			       rdev, wdev, false) < 0) {
2955 		nlmsg_free(msg);
2956 		return -ENOBUFS;
2957 	}
2958 
2959 	/*
2960 	 * For wdevs which have no associated netdev object (e.g. of type
2961 	 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2962 	 * For all other types, the event will be generated from the
2963 	 * netdev notifier
2964 	 */
2965 	if (!wdev->netdev)
2966 		nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2967 
2968 	return genlmsg_reply(msg, info);
2969 }
2970 
2971 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2972 {
2973 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
2974 	struct wireless_dev *wdev = info->user_ptr[1];
2975 
2976 	if (!rdev->ops->del_virtual_intf)
2977 		return -EOPNOTSUPP;
2978 
2979 	/*
2980 	 * If we remove a wireless device without a netdev then clear
2981 	 * user_ptr[1] so that nl80211_post_doit won't dereference it
2982 	 * to check if it needs to do dev_put(). Otherwise it crashes
2983 	 * since the wdev has been freed, unlike with a netdev where
2984 	 * we need the dev_put() for the netdev to really be freed.
2985 	 */
2986 	if (!wdev->netdev)
2987 		info->user_ptr[1] = NULL;
2988 
2989 	return rdev_del_virtual_intf(rdev, wdev);
2990 }
2991 
2992 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2993 {
2994 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
2995 	struct net_device *dev = info->user_ptr[1];
2996 	u16 noack_map;
2997 
2998 	if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2999 		return -EINVAL;
3000 
3001 	if (!rdev->ops->set_noack_map)
3002 		return -EOPNOTSUPP;
3003 
3004 	noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3005 
3006 	return rdev_set_noack_map(rdev, dev, noack_map);
3007 }
3008 
3009 struct get_key_cookie {
3010 	struct sk_buff *msg;
3011 	int error;
3012 	int idx;
3013 };
3014 
3015 static void get_key_callback(void *c, struct key_params *params)
3016 {
3017 	struct nlattr *key;
3018 	struct get_key_cookie *cookie = c;
3019 
3020 	if ((params->key &&
3021 	     nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3022 		     params->key_len, params->key)) ||
3023 	    (params->seq &&
3024 	     nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3025 		     params->seq_len, params->seq)) ||
3026 	    (params->cipher &&
3027 	     nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3028 			 params->cipher)))
3029 		goto nla_put_failure;
3030 
3031 	key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3032 	if (!key)
3033 		goto nla_put_failure;
3034 
3035 	if ((params->key &&
3036 	     nla_put(cookie->msg, NL80211_KEY_DATA,
3037 		     params->key_len, params->key)) ||
3038 	    (params->seq &&
3039 	     nla_put(cookie->msg, NL80211_KEY_SEQ,
3040 		     params->seq_len, params->seq)) ||
3041 	    (params->cipher &&
3042 	     nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3043 			 params->cipher)))
3044 		goto nla_put_failure;
3045 
3046 	if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3047 		goto nla_put_failure;
3048 
3049 	nla_nest_end(cookie->msg, key);
3050 
3051 	return;
3052  nla_put_failure:
3053 	cookie->error = 1;
3054 }
3055 
3056 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3057 {
3058 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
3059 	int err;
3060 	struct net_device *dev = info->user_ptr[1];
3061 	u8 key_idx = 0;
3062 	const u8 *mac_addr = NULL;
3063 	bool pairwise;
3064 	struct get_key_cookie cookie = {
3065 		.error = 0,
3066 	};
3067 	void *hdr;
3068 	struct sk_buff *msg;
3069 
3070 	if (info->attrs[NL80211_ATTR_KEY_IDX])
3071 		key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3072 
3073 	if (key_idx > 5)
3074 		return -EINVAL;
3075 
3076 	if (info->attrs[NL80211_ATTR_MAC])
3077 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3078 
3079 	pairwise = !!mac_addr;
3080 	if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3081 		u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3082 
3083 		if (kt >= NUM_NL80211_KEYTYPES)
3084 			return -EINVAL;
3085 		if (kt != NL80211_KEYTYPE_GROUP &&
3086 		    kt != NL80211_KEYTYPE_PAIRWISE)
3087 			return -EINVAL;
3088 		pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3089 	}
3090 
3091 	if (!rdev->ops->get_key)
3092 		return -EOPNOTSUPP;
3093 
3094 	if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3095 		return -ENOENT;
3096 
3097 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3098 	if (!msg)
3099 		return -ENOMEM;
3100 
3101 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3102 			     NL80211_CMD_NEW_KEY);
3103 	if (!hdr)
3104 		goto nla_put_failure;
3105 
3106 	cookie.msg = msg;
3107 	cookie.idx = key_idx;
3108 
3109 	if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3110 	    nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3111 		goto nla_put_failure;
3112 	if (mac_addr &&
3113 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3114 		goto nla_put_failure;
3115 
3116 	err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3117 			   get_key_callback);
3118 
3119 	if (err)
3120 		goto free_msg;
3121 
3122 	if (cookie.error)
3123 		goto nla_put_failure;
3124 
3125 	genlmsg_end(msg, hdr);
3126 	return genlmsg_reply(msg, info);
3127 
3128  nla_put_failure:
3129 	err = -ENOBUFS;
3130  free_msg:
3131 	nlmsg_free(msg);
3132 	return err;
3133 }
3134 
3135 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3136 {
3137 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
3138 	struct key_parse key;
3139 	int err;
3140 	struct net_device *dev = info->user_ptr[1];
3141 
3142 	err = nl80211_parse_key(info, &key);
3143 	if (err)
3144 		return err;
3145 
3146 	if (key.idx < 0)
3147 		return -EINVAL;
3148 
3149 	/* only support setting default key */
3150 	if (!key.def && !key.defmgmt)
3151 		return -EINVAL;
3152 
3153 	wdev_lock(dev->ieee80211_ptr);
3154 
3155 	if (key.def) {
3156 		if (!rdev->ops->set_default_key) {
3157 			err = -EOPNOTSUPP;
3158 			goto out;
3159 		}
3160 
3161 		err = nl80211_key_allowed(dev->ieee80211_ptr);
3162 		if (err)
3163 			goto out;
3164 
3165 		err = rdev_set_default_key(rdev, dev, key.idx,
3166 						 key.def_uni, key.def_multi);
3167 
3168 		if (err)
3169 			goto out;
3170 
3171 #ifdef CONFIG_CFG80211_WEXT
3172 		dev->ieee80211_ptr->wext.default_key = key.idx;
3173 #endif
3174 	} else {
3175 		if (key.def_uni || !key.def_multi) {
3176 			err = -EINVAL;
3177 			goto out;
3178 		}
3179 
3180 		if (!rdev->ops->set_default_mgmt_key) {
3181 			err = -EOPNOTSUPP;
3182 			goto out;
3183 		}
3184 
3185 		err = nl80211_key_allowed(dev->ieee80211_ptr);
3186 		if (err)
3187 			goto out;
3188 
3189 		err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3190 		if (err)
3191 			goto out;
3192 
3193 #ifdef CONFIG_CFG80211_WEXT
3194 		dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3195 #endif
3196 	}
3197 
3198  out:
3199 	wdev_unlock(dev->ieee80211_ptr);
3200 
3201 	return err;
3202 }
3203 
3204 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3205 {
3206 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
3207 	int err;
3208 	struct net_device *dev = info->user_ptr[1];
3209 	struct key_parse key;
3210 	const u8 *mac_addr = NULL;
3211 
3212 	err = nl80211_parse_key(info, &key);
3213 	if (err)
3214 		return err;
3215 
3216 	if (!key.p.key)
3217 		return -EINVAL;
3218 
3219 	if (info->attrs[NL80211_ATTR_MAC])
3220 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3221 
3222 	if (key.type == -1) {
3223 		if (mac_addr)
3224 			key.type = NL80211_KEYTYPE_PAIRWISE;
3225 		else
3226 			key.type = NL80211_KEYTYPE_GROUP;
3227 	}
3228 
3229 	/* for now */
3230 	if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3231 	    key.type != NL80211_KEYTYPE_GROUP)
3232 		return -EINVAL;
3233 
3234 	if (!rdev->ops->add_key)
3235 		return -EOPNOTSUPP;
3236 
3237 	if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3238 					   key.type == NL80211_KEYTYPE_PAIRWISE,
3239 					   mac_addr))
3240 		return -EINVAL;
3241 
3242 	wdev_lock(dev->ieee80211_ptr);
3243 	err = nl80211_key_allowed(dev->ieee80211_ptr);
3244 	if (!err)
3245 		err = rdev_add_key(rdev, dev, key.idx,
3246 				   key.type == NL80211_KEYTYPE_PAIRWISE,
3247 				    mac_addr, &key.p);
3248 	wdev_unlock(dev->ieee80211_ptr);
3249 
3250 	return err;
3251 }
3252 
3253 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3254 {
3255 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
3256 	int err;
3257 	struct net_device *dev = info->user_ptr[1];
3258 	u8 *mac_addr = NULL;
3259 	struct key_parse key;
3260 
3261 	err = nl80211_parse_key(info, &key);
3262 	if (err)
3263 		return err;
3264 
3265 	if (info->attrs[NL80211_ATTR_MAC])
3266 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3267 
3268 	if (key.type == -1) {
3269 		if (mac_addr)
3270 			key.type = NL80211_KEYTYPE_PAIRWISE;
3271 		else
3272 			key.type = NL80211_KEYTYPE_GROUP;
3273 	}
3274 
3275 	/* for now */
3276 	if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3277 	    key.type != NL80211_KEYTYPE_GROUP)
3278 		return -EINVAL;
3279 
3280 	if (!rdev->ops->del_key)
3281 		return -EOPNOTSUPP;
3282 
3283 	wdev_lock(dev->ieee80211_ptr);
3284 	err = nl80211_key_allowed(dev->ieee80211_ptr);
3285 
3286 	if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3287 	    !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3288 		err = -ENOENT;
3289 
3290 	if (!err)
3291 		err = rdev_del_key(rdev, dev, key.idx,
3292 				   key.type == NL80211_KEYTYPE_PAIRWISE,
3293 				   mac_addr);
3294 
3295 #ifdef CONFIG_CFG80211_WEXT
3296 	if (!err) {
3297 		if (key.idx == dev->ieee80211_ptr->wext.default_key)
3298 			dev->ieee80211_ptr->wext.default_key = -1;
3299 		else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3300 			dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3301 	}
3302 #endif
3303 	wdev_unlock(dev->ieee80211_ptr);
3304 
3305 	return err;
3306 }
3307 
3308 /* This function returns an error or the number of nested attributes */
3309 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3310 {
3311 	struct nlattr *attr;
3312 	int n_entries = 0, tmp;
3313 
3314 	nla_for_each_nested(attr, nl_attr, tmp) {
3315 		if (nla_len(attr) != ETH_ALEN)
3316 			return -EINVAL;
3317 
3318 		n_entries++;
3319 	}
3320 
3321 	return n_entries;
3322 }
3323 
3324 /*
3325  * This function parses ACL information and allocates memory for ACL data.
3326  * On successful return, the calling function is responsible to free the
3327  * ACL buffer returned by this function.
3328  */
3329 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3330 						struct genl_info *info)
3331 {
3332 	enum nl80211_acl_policy acl_policy;
3333 	struct nlattr *attr;
3334 	struct cfg80211_acl_data *acl;
3335 	int i = 0, n_entries, tmp;
3336 
3337 	if (!wiphy->max_acl_mac_addrs)
3338 		return ERR_PTR(-EOPNOTSUPP);
3339 
3340 	if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3341 		return ERR_PTR(-EINVAL);
3342 
3343 	acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3344 	if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3345 	    acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3346 		return ERR_PTR(-EINVAL);
3347 
3348 	if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3349 		return ERR_PTR(-EINVAL);
3350 
3351 	n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3352 	if (n_entries < 0)
3353 		return ERR_PTR(n_entries);
3354 
3355 	if (n_entries > wiphy->max_acl_mac_addrs)
3356 		return ERR_PTR(-ENOTSUPP);
3357 
3358 	acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3359 		      GFP_KERNEL);
3360 	if (!acl)
3361 		return ERR_PTR(-ENOMEM);
3362 
3363 	nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3364 		memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3365 		i++;
3366 	}
3367 
3368 	acl->n_acl_entries = n_entries;
3369 	acl->acl_policy = acl_policy;
3370 
3371 	return acl;
3372 }
3373 
3374 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3375 {
3376 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
3377 	struct net_device *dev = info->user_ptr[1];
3378 	struct cfg80211_acl_data *acl;
3379 	int err;
3380 
3381 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3382 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3383 		return -EOPNOTSUPP;
3384 
3385 	if (!dev->ieee80211_ptr->beacon_interval)
3386 		return -EINVAL;
3387 
3388 	acl = parse_acl_data(&rdev->wiphy, info);
3389 	if (IS_ERR(acl))
3390 		return PTR_ERR(acl);
3391 
3392 	err = rdev_set_mac_acl(rdev, dev, acl);
3393 
3394 	kfree(acl);
3395 
3396 	return err;
3397 }
3398 
3399 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3400 			   u8 *rates, u8 rates_len)
3401 {
3402 	u8 i;
3403 	u32 mask = 0;
3404 
3405 	for (i = 0; i < rates_len; i++) {
3406 		int rate = (rates[i] & 0x7f) * 5;
3407 		int ridx;
3408 
3409 		for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3410 			struct ieee80211_rate *srate =
3411 				&sband->bitrates[ridx];
3412 			if (rate == srate->bitrate) {
3413 				mask |= 1 << ridx;
3414 				break;
3415 			}
3416 		}
3417 		if (ridx == sband->n_bitrates)
3418 			return 0; /* rate not found */
3419 	}
3420 
3421 	return mask;
3422 }
3423 
3424 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3425 			       u8 *rates, u8 rates_len,
3426 			       u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3427 {
3428 	u8 i;
3429 
3430 	memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3431 
3432 	for (i = 0; i < rates_len; i++) {
3433 		int ridx, rbit;
3434 
3435 		ridx = rates[i] / 8;
3436 		rbit = BIT(rates[i] % 8);
3437 
3438 		/* check validity */
3439 		if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3440 			return false;
3441 
3442 		/* check availability */
3443 		if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3444 			mcs[ridx] |= rbit;
3445 		else
3446 			return false;
3447 	}
3448 
3449 	return true;
3450 }
3451 
3452 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3453 {
3454 	u16 mcs_mask = 0;
3455 
3456 	switch (vht_mcs_map) {
3457 	case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3458 		break;
3459 	case IEEE80211_VHT_MCS_SUPPORT_0_7:
3460 		mcs_mask = 0x00FF;
3461 		break;
3462 	case IEEE80211_VHT_MCS_SUPPORT_0_8:
3463 		mcs_mask = 0x01FF;
3464 		break;
3465 	case IEEE80211_VHT_MCS_SUPPORT_0_9:
3466 		mcs_mask = 0x03FF;
3467 		break;
3468 	default:
3469 		break;
3470 	}
3471 
3472 	return mcs_mask;
3473 }
3474 
3475 static void vht_build_mcs_mask(u16 vht_mcs_map,
3476 			       u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3477 {
3478 	u8 nss;
3479 
3480 	for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3481 		vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3482 		vht_mcs_map >>= 2;
3483 	}
3484 }
3485 
3486 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3487 			     struct nl80211_txrate_vht *txrate,
3488 			     u16 mcs[NL80211_VHT_NSS_MAX])
3489 {
3490 	u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3491 	u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3492 	u8 i;
3493 
3494 	if (!sband->vht_cap.vht_supported)
3495 		return false;
3496 
3497 	memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3498 
3499 	/* Build vht_mcs_mask from VHT capabilities */
3500 	vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3501 
3502 	for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3503 		if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3504 			mcs[i] = txrate->mcs[i];
3505 		else
3506 			return false;
3507 	}
3508 
3509 	return true;
3510 }
3511 
3512 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3513 	[NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3514 				    .len = NL80211_MAX_SUPP_RATES },
3515 	[NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3516 				.len = NL80211_MAX_SUPP_HT_RATES },
3517 	[NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3518 	[NL80211_TXRATE_GI] = { .type = NLA_U8 },
3519 };
3520 
3521 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3522 					 struct cfg80211_bitrate_mask *mask)
3523 {
3524 	struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3525 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
3526 	int rem, i;
3527 	struct nlattr *tx_rates;
3528 	struct ieee80211_supported_band *sband;
3529 	u16 vht_tx_mcs_map;
3530 
3531 	memset(mask, 0, sizeof(*mask));
3532 	/* Default to all rates enabled */
3533 	for (i = 0; i < NUM_NL80211_BANDS; i++) {
3534 		sband = rdev->wiphy.bands[i];
3535 
3536 		if (!sband)
3537 			continue;
3538 
3539 		mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3540 		memcpy(mask->control[i].ht_mcs,
3541 		       sband->ht_cap.mcs.rx_mask,
3542 		       sizeof(mask->control[i].ht_mcs));
3543 
3544 		if (!sband->vht_cap.vht_supported)
3545 			continue;
3546 
3547 		vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3548 		vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3549 	}
3550 
3551 	/* if no rates are given set it back to the defaults */
3552 	if (!info->attrs[NL80211_ATTR_TX_RATES])
3553 		goto out;
3554 
3555 	/* The nested attribute uses enum nl80211_band as the index. This maps
3556 	 * directly to the enum nl80211_band values used in cfg80211.
3557 	 */
3558 	BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3559 	nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3560 		enum nl80211_band band = nla_type(tx_rates);
3561 		int err;
3562 
3563 		if (band < 0 || band >= NUM_NL80211_BANDS)
3564 			return -EINVAL;
3565 		sband = rdev->wiphy.bands[band];
3566 		if (sband == NULL)
3567 			return -EINVAL;
3568 		err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3569 				       nl80211_txattr_policy);
3570 		if (err)
3571 			return err;
3572 		if (tb[NL80211_TXRATE_LEGACY]) {
3573 			mask->control[band].legacy = rateset_to_mask(
3574 				sband,
3575 				nla_data(tb[NL80211_TXRATE_LEGACY]),
3576 				nla_len(tb[NL80211_TXRATE_LEGACY]));
3577 			if ((mask->control[band].legacy == 0) &&
3578 			    nla_len(tb[NL80211_TXRATE_LEGACY]))
3579 				return -EINVAL;
3580 		}
3581 		if (tb[NL80211_TXRATE_HT]) {
3582 			if (!ht_rateset_to_mask(
3583 					sband,
3584 					nla_data(tb[NL80211_TXRATE_HT]),
3585 					nla_len(tb[NL80211_TXRATE_HT]),
3586 					mask->control[band].ht_mcs))
3587 				return -EINVAL;
3588 		}
3589 		if (tb[NL80211_TXRATE_VHT]) {
3590 			if (!vht_set_mcs_mask(
3591 					sband,
3592 					nla_data(tb[NL80211_TXRATE_VHT]),
3593 					mask->control[band].vht_mcs))
3594 				return -EINVAL;
3595 		}
3596 		if (tb[NL80211_TXRATE_GI]) {
3597 			mask->control[band].gi =
3598 				nla_get_u8(tb[NL80211_TXRATE_GI]);
3599 			if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3600 				return -EINVAL;
3601 		}
3602 
3603 		if (mask->control[band].legacy == 0) {
3604 			/* don't allow empty legacy rates if HT or VHT
3605 			 * are not even supported.
3606 			 */
3607 			if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3608 			      rdev->wiphy.bands[band]->vht_cap.vht_supported))
3609 				return -EINVAL;
3610 
3611 			for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3612 				if (mask->control[band].ht_mcs[i])
3613 					goto out;
3614 
3615 			for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3616 				if (mask->control[band].vht_mcs[i])
3617 					goto out;
3618 
3619 			/* legacy and mcs rates may not be both empty */
3620 			return -EINVAL;
3621 		}
3622 	}
3623 
3624 out:
3625 	return 0;
3626 }
3627 
3628 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3629 				   enum nl80211_band band,
3630 				   struct cfg80211_bitrate_mask *beacon_rate)
3631 {
3632 	u32 count_ht, count_vht, i;
3633 	u32 rate = beacon_rate->control[band].legacy;
3634 
3635 	/* Allow only one rate */
3636 	if (hweight32(rate) > 1)
3637 		return -EINVAL;
3638 
3639 	count_ht = 0;
3640 	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3641 		if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3642 			return -EINVAL;
3643 		} else if (beacon_rate->control[band].ht_mcs[i]) {
3644 			count_ht++;
3645 			if (count_ht > 1)
3646 				return -EINVAL;
3647 		}
3648 		if (count_ht && rate)
3649 			return -EINVAL;
3650 	}
3651 
3652 	count_vht = 0;
3653 	for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3654 		if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3655 			return -EINVAL;
3656 		} else if (beacon_rate->control[band].vht_mcs[i]) {
3657 			count_vht++;
3658 			if (count_vht > 1)
3659 				return -EINVAL;
3660 		}
3661 		if (count_vht && rate)
3662 			return -EINVAL;
3663 	}
3664 
3665 	if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3666 		return -EINVAL;
3667 
3668 	if (rate &&
3669 	    !wiphy_ext_feature_isset(&rdev->wiphy,
3670 				     NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3671 		return -EINVAL;
3672 	if (count_ht &&
3673 	    !wiphy_ext_feature_isset(&rdev->wiphy,
3674 				     NL80211_EXT_FEATURE_BEACON_RATE_HT))
3675 		return -EINVAL;
3676 	if (count_vht &&
3677 	    !wiphy_ext_feature_isset(&rdev->wiphy,
3678 				     NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3679 		return -EINVAL;
3680 
3681 	return 0;
3682 }
3683 
3684 static int nl80211_parse_beacon(struct nlattr *attrs[],
3685 				struct cfg80211_beacon_data *bcn)
3686 {
3687 	bool haveinfo = false;
3688 
3689 	if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3690 	    !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3691 	    !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3692 	    !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3693 		return -EINVAL;
3694 
3695 	memset(bcn, 0, sizeof(*bcn));
3696 
3697 	if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3698 		bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3699 		bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3700 		if (!bcn->head_len)
3701 			return -EINVAL;
3702 		haveinfo = true;
3703 	}
3704 
3705 	if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3706 		bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3707 		bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3708 		haveinfo = true;
3709 	}
3710 
3711 	if (!haveinfo)
3712 		return -EINVAL;
3713 
3714 	if (attrs[NL80211_ATTR_IE]) {
3715 		bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3716 		bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3717 	}
3718 
3719 	if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3720 		bcn->proberesp_ies =
3721 			nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3722 		bcn->proberesp_ies_len =
3723 			nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3724 	}
3725 
3726 	if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3727 		bcn->assocresp_ies =
3728 			nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3729 		bcn->assocresp_ies_len =
3730 			nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3731 	}
3732 
3733 	if (attrs[NL80211_ATTR_PROBE_RESP]) {
3734 		bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3735 		bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3736 	}
3737 
3738 	return 0;
3739 }
3740 
3741 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3742 				   struct cfg80211_ap_settings *params)
3743 {
3744 	struct wireless_dev *wdev;
3745 	bool ret = false;
3746 
3747 	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3748 		if (wdev->iftype != NL80211_IFTYPE_AP &&
3749 		    wdev->iftype != NL80211_IFTYPE_P2P_GO)
3750 			continue;
3751 
3752 		if (!wdev->preset_chandef.chan)
3753 			continue;
3754 
3755 		params->chandef = wdev->preset_chandef;
3756 		ret = true;
3757 		break;
3758 	}
3759 
3760 	return ret;
3761 }
3762 
3763 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3764 				    enum nl80211_auth_type auth_type,
3765 				    enum nl80211_commands cmd)
3766 {
3767 	if (auth_type > NL80211_AUTHTYPE_MAX)
3768 		return false;
3769 
3770 	switch (cmd) {
3771 	case NL80211_CMD_AUTHENTICATE:
3772 		if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3773 		    auth_type == NL80211_AUTHTYPE_SAE)
3774 			return false;
3775 		if (!wiphy_ext_feature_isset(&rdev->wiphy,
3776 					     NL80211_EXT_FEATURE_FILS_STA) &&
3777 		    (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3778 		     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3779 		     auth_type == NL80211_AUTHTYPE_FILS_PK))
3780 			return false;
3781 		return true;
3782 	case NL80211_CMD_CONNECT:
3783 	case NL80211_CMD_START_AP:
3784 		/* SAE not supported yet */
3785 		if (auth_type == NL80211_AUTHTYPE_SAE)
3786 			return false;
3787 		/* FILS not supported yet */
3788 		if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3789 		    auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3790 		    auth_type == NL80211_AUTHTYPE_FILS_PK)
3791 			return false;
3792 		return true;
3793 	default:
3794 		return false;
3795 	}
3796 }
3797 
3798 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3799 {
3800 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
3801 	struct net_device *dev = info->user_ptr[1];
3802 	struct wireless_dev *wdev = dev->ieee80211_ptr;
3803 	struct cfg80211_ap_settings params;
3804 	int err;
3805 
3806 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3807 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3808 		return -EOPNOTSUPP;
3809 
3810 	if (!rdev->ops->start_ap)
3811 		return -EOPNOTSUPP;
3812 
3813 	if (wdev->beacon_interval)
3814 		return -EALREADY;
3815 
3816 	memset(&params, 0, sizeof(params));
3817 
3818 	/* these are required for START_AP */
3819 	if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3820 	    !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3821 	    !info->attrs[NL80211_ATTR_BEACON_HEAD])
3822 		return -EINVAL;
3823 
3824 	err = nl80211_parse_beacon(info->attrs, &params.beacon);
3825 	if (err)
3826 		return err;
3827 
3828 	params.beacon_interval =
3829 		nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3830 	params.dtim_period =
3831 		nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3832 
3833 	err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3834 					   params.beacon_interval);
3835 	if (err)
3836 		return err;
3837 
3838 	/*
3839 	 * In theory, some of these attributes should be required here
3840 	 * but since they were not used when the command was originally
3841 	 * added, keep them optional for old user space programs to let
3842 	 * them continue to work with drivers that do not need the
3843 	 * additional information -- drivers must check!
3844 	 */
3845 	if (info->attrs[NL80211_ATTR_SSID]) {
3846 		params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3847 		params.ssid_len =
3848 			nla_len(info->attrs[NL80211_ATTR_SSID]);
3849 		if (params.ssid_len == 0 ||
3850 		    params.ssid_len > IEEE80211_MAX_SSID_LEN)
3851 			return -EINVAL;
3852 	}
3853 
3854 	if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3855 		params.hidden_ssid = nla_get_u32(
3856 			info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3857 		if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3858 		    params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3859 		    params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3860 			return -EINVAL;
3861 	}
3862 
3863 	params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3864 
3865 	if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3866 		params.auth_type = nla_get_u32(
3867 			info->attrs[NL80211_ATTR_AUTH_TYPE]);
3868 		if (!nl80211_valid_auth_type(rdev, params.auth_type,
3869 					     NL80211_CMD_START_AP))
3870 			return -EINVAL;
3871 	} else
3872 		params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3873 
3874 	err = nl80211_crypto_settings(rdev, info, &params.crypto,
3875 				      NL80211_MAX_NR_CIPHER_SUITES);
3876 	if (err)
3877 		return err;
3878 
3879 	if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3880 		if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3881 			return -EOPNOTSUPP;
3882 		params.inactivity_timeout = nla_get_u16(
3883 			info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3884 	}
3885 
3886 	if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3887 		if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3888 			return -EINVAL;
3889 		params.p2p_ctwindow =
3890 			nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3891 		if (params.p2p_ctwindow > 127)
3892 			return -EINVAL;
3893 		if (params.p2p_ctwindow != 0 &&
3894 		    !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3895 			return -EINVAL;
3896 	}
3897 
3898 	if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3899 		u8 tmp;
3900 
3901 		if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3902 			return -EINVAL;
3903 		tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3904 		if (tmp > 1)
3905 			return -EINVAL;
3906 		params.p2p_opp_ps = tmp;
3907 		if (params.p2p_opp_ps != 0 &&
3908 		    !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3909 			return -EINVAL;
3910 	}
3911 
3912 	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3913 		err = nl80211_parse_chandef(rdev, info, &params.chandef);
3914 		if (err)
3915 			return err;
3916 	} else if (wdev->preset_chandef.chan) {
3917 		params.chandef = wdev->preset_chandef;
3918 	} else if (!nl80211_get_ap_channel(rdev, &params))
3919 		return -EINVAL;
3920 
3921 	if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3922 					   wdev->iftype))
3923 		return -EINVAL;
3924 
3925 	if (info->attrs[NL80211_ATTR_TX_RATES]) {
3926 		err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
3927 		if (err)
3928 			return err;
3929 
3930 		err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
3931 					      &params.beacon_rate);
3932 		if (err)
3933 			return err;
3934 	}
3935 
3936 	if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3937 		params.smps_mode =
3938 			nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3939 		switch (params.smps_mode) {
3940 		case NL80211_SMPS_OFF:
3941 			break;
3942 		case NL80211_SMPS_STATIC:
3943 			if (!(rdev->wiphy.features &
3944 			      NL80211_FEATURE_STATIC_SMPS))
3945 				return -EINVAL;
3946 			break;
3947 		case NL80211_SMPS_DYNAMIC:
3948 			if (!(rdev->wiphy.features &
3949 			      NL80211_FEATURE_DYNAMIC_SMPS))
3950 				return -EINVAL;
3951 			break;
3952 		default:
3953 			return -EINVAL;
3954 		}
3955 	} else {
3956 		params.smps_mode = NL80211_SMPS_OFF;
3957 	}
3958 
3959 	params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3960 	if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3961 		return -EOPNOTSUPP;
3962 
3963 	if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3964 		params.acl = parse_acl_data(&rdev->wiphy, info);
3965 		if (IS_ERR(params.acl))
3966 			return PTR_ERR(params.acl);
3967 	}
3968 
3969 	wdev_lock(wdev);
3970 	err = rdev_start_ap(rdev, dev, &params);
3971 	if (!err) {
3972 		wdev->preset_chandef = params.chandef;
3973 		wdev->beacon_interval = params.beacon_interval;
3974 		wdev->chandef = params.chandef;
3975 		wdev->ssid_len = params.ssid_len;
3976 		memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3977 	}
3978 	wdev_unlock(wdev);
3979 
3980 	kfree(params.acl);
3981 
3982 	return err;
3983 }
3984 
3985 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3986 {
3987 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
3988 	struct net_device *dev = info->user_ptr[1];
3989 	struct wireless_dev *wdev = dev->ieee80211_ptr;
3990 	struct cfg80211_beacon_data params;
3991 	int err;
3992 
3993 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3994 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3995 		return -EOPNOTSUPP;
3996 
3997 	if (!rdev->ops->change_beacon)
3998 		return -EOPNOTSUPP;
3999 
4000 	if (!wdev->beacon_interval)
4001 		return -EINVAL;
4002 
4003 	err = nl80211_parse_beacon(info->attrs, &params);
4004 	if (err)
4005 		return err;
4006 
4007 	wdev_lock(wdev);
4008 	err = rdev_change_beacon(rdev, dev, &params);
4009 	wdev_unlock(wdev);
4010 
4011 	return err;
4012 }
4013 
4014 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4015 {
4016 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
4017 	struct net_device *dev = info->user_ptr[1];
4018 
4019 	return cfg80211_stop_ap(rdev, dev, false);
4020 }
4021 
4022 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4023 	[NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4024 	[NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4025 	[NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4026 	[NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4027 	[NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4028 	[NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4029 };
4030 
4031 static int parse_station_flags(struct genl_info *info,
4032 			       enum nl80211_iftype iftype,
4033 			       struct station_parameters *params)
4034 {
4035 	struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4036 	struct nlattr *nla;
4037 	int flag;
4038 
4039 	/*
4040 	 * Try parsing the new attribute first so userspace
4041 	 * can specify both for older kernels.
4042 	 */
4043 	nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4044 	if (nla) {
4045 		struct nl80211_sta_flag_update *sta_flags;
4046 
4047 		sta_flags = nla_data(nla);
4048 		params->sta_flags_mask = sta_flags->mask;
4049 		params->sta_flags_set = sta_flags->set;
4050 		params->sta_flags_set &= params->sta_flags_mask;
4051 		if ((params->sta_flags_mask |
4052 		     params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4053 			return -EINVAL;
4054 		return 0;
4055 	}
4056 
4057 	/* if present, parse the old attribute */
4058 
4059 	nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4060 	if (!nla)
4061 		return 0;
4062 
4063 	if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
4064 			     nla, sta_flags_policy))
4065 		return -EINVAL;
4066 
4067 	/*
4068 	 * Only allow certain flags for interface types so that
4069 	 * other attributes are silently ignored. Remember that
4070 	 * this is backward compatibility code with old userspace
4071 	 * and shouldn't be hit in other cases anyway.
4072 	 */
4073 	switch (iftype) {
4074 	case NL80211_IFTYPE_AP:
4075 	case NL80211_IFTYPE_AP_VLAN:
4076 	case NL80211_IFTYPE_P2P_GO:
4077 		params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4078 					 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4079 					 BIT(NL80211_STA_FLAG_WME) |
4080 					 BIT(NL80211_STA_FLAG_MFP);
4081 		break;
4082 	case NL80211_IFTYPE_P2P_CLIENT:
4083 	case NL80211_IFTYPE_STATION:
4084 		params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4085 					 BIT(NL80211_STA_FLAG_TDLS_PEER);
4086 		break;
4087 	case NL80211_IFTYPE_MESH_POINT:
4088 		params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4089 					 BIT(NL80211_STA_FLAG_MFP) |
4090 					 BIT(NL80211_STA_FLAG_AUTHORIZED);
4091 	default:
4092 		return -EINVAL;
4093 	}
4094 
4095 	for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4096 		if (flags[flag]) {
4097 			params->sta_flags_set |= (1<<flag);
4098 
4099 			/* no longer support new API additions in old API */
4100 			if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4101 				return -EINVAL;
4102 		}
4103 	}
4104 
4105 	return 0;
4106 }
4107 
4108 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4109 				 int attr)
4110 {
4111 	struct nlattr *rate;
4112 	u32 bitrate;
4113 	u16 bitrate_compat;
4114 	enum nl80211_attrs rate_flg;
4115 
4116 	rate = nla_nest_start(msg, attr);
4117 	if (!rate)
4118 		return false;
4119 
4120 	/* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4121 	bitrate = cfg80211_calculate_bitrate(info);
4122 	/* report 16-bit bitrate only if we can */
4123 	bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4124 	if (bitrate > 0 &&
4125 	    nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4126 		return false;
4127 	if (bitrate_compat > 0 &&
4128 	    nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4129 		return false;
4130 
4131 	switch (info->bw) {
4132 	case RATE_INFO_BW_5:
4133 		rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4134 		break;
4135 	case RATE_INFO_BW_10:
4136 		rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4137 		break;
4138 	default:
4139 		WARN_ON(1);
4140 		/* fall through */
4141 	case RATE_INFO_BW_20:
4142 		rate_flg = 0;
4143 		break;
4144 	case RATE_INFO_BW_40:
4145 		rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4146 		break;
4147 	case RATE_INFO_BW_80:
4148 		rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4149 		break;
4150 	case RATE_INFO_BW_160:
4151 		rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4152 		break;
4153 	}
4154 
4155 	if (rate_flg && nla_put_flag(msg, rate_flg))
4156 		return false;
4157 
4158 	if (info->flags & RATE_INFO_FLAGS_MCS) {
4159 		if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4160 			return false;
4161 		if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4162 		    nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4163 			return false;
4164 	} else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4165 		if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4166 			return false;
4167 		if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4168 			return false;
4169 		if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4170 		    nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4171 			return false;
4172 	}
4173 
4174 	nla_nest_end(msg, rate);
4175 	return true;
4176 }
4177 
4178 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4179 			       int id)
4180 {
4181 	void *attr;
4182 	int i = 0;
4183 
4184 	if (!mask)
4185 		return true;
4186 
4187 	attr = nla_nest_start(msg, id);
4188 	if (!attr)
4189 		return false;
4190 
4191 	for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4192 		if (!(mask & BIT(i)))
4193 			continue;
4194 
4195 		if (nla_put_u8(msg, i, signal[i]))
4196 			return false;
4197 	}
4198 
4199 	nla_nest_end(msg, attr);
4200 
4201 	return true;
4202 }
4203 
4204 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4205 				u32 seq, int flags,
4206 				struct cfg80211_registered_device *rdev,
4207 				struct net_device *dev,
4208 				const u8 *mac_addr, struct station_info *sinfo)
4209 {
4210 	void *hdr;
4211 	struct nlattr *sinfoattr, *bss_param;
4212 
4213 	hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4214 	if (!hdr)
4215 		return -1;
4216 
4217 	if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4218 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4219 	    nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4220 		goto nla_put_failure;
4221 
4222 	sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4223 	if (!sinfoattr)
4224 		goto nla_put_failure;
4225 
4226 #define PUT_SINFO(attr, memb, type) do {				\
4227 	BUILD_BUG_ON(sizeof(type) == sizeof(u64));			\
4228 	if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&	\
4229 	    nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,		\
4230 			     sinfo->memb))				\
4231 		goto nla_put_failure;					\
4232 	} while (0)
4233 #define PUT_SINFO_U64(attr, memb) do {					\
4234 	if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&	\
4235 	    nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,		\
4236 			      sinfo->memb, NL80211_STA_INFO_PAD))	\
4237 		goto nla_put_failure;					\
4238 	} while (0)
4239 
4240 	PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4241 	PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4242 
4243 	if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4244 			     BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4245 	    nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4246 			(u32)sinfo->rx_bytes))
4247 		goto nla_put_failure;
4248 
4249 	if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4250 			     BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4251 	    nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4252 			(u32)sinfo->tx_bytes))
4253 		goto nla_put_failure;
4254 
4255 	PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4256 	PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4257 	PUT_SINFO(LLID, llid, u16);
4258 	PUT_SINFO(PLID, plid, u16);
4259 	PUT_SINFO(PLINK_STATE, plink_state, u8);
4260 	PUT_SINFO_U64(RX_DURATION, rx_duration);
4261 
4262 	switch (rdev->wiphy.signal_type) {
4263 	case CFG80211_SIGNAL_TYPE_MBM:
4264 		PUT_SINFO(SIGNAL, signal, u8);
4265 		PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4266 		break;
4267 	default:
4268 		break;
4269 	}
4270 	if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4271 		if (!nl80211_put_signal(msg, sinfo->chains,
4272 					sinfo->chain_signal,
4273 					NL80211_STA_INFO_CHAIN_SIGNAL))
4274 			goto nla_put_failure;
4275 	}
4276 	if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4277 		if (!nl80211_put_signal(msg, sinfo->chains,
4278 					sinfo->chain_signal_avg,
4279 					NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4280 			goto nla_put_failure;
4281 	}
4282 	if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4283 		if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4284 					  NL80211_STA_INFO_TX_BITRATE))
4285 			goto nla_put_failure;
4286 	}
4287 	if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4288 		if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4289 					  NL80211_STA_INFO_RX_BITRATE))
4290 			goto nla_put_failure;
4291 	}
4292 
4293 	PUT_SINFO(RX_PACKETS, rx_packets, u32);
4294 	PUT_SINFO(TX_PACKETS, tx_packets, u32);
4295 	PUT_SINFO(TX_RETRIES, tx_retries, u32);
4296 	PUT_SINFO(TX_FAILED, tx_failed, u32);
4297 	PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4298 	PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4299 	PUT_SINFO(LOCAL_PM, local_pm, u32);
4300 	PUT_SINFO(PEER_PM, peer_pm, u32);
4301 	PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4302 
4303 	if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4304 		bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4305 		if (!bss_param)
4306 			goto nla_put_failure;
4307 
4308 		if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4309 		     nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4310 		    ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4311 		     nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4312 		    ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4313 		     nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4314 		    nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4315 			       sinfo->bss_param.dtim_period) ||
4316 		    nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4317 				sinfo->bss_param.beacon_interval))
4318 			goto nla_put_failure;
4319 
4320 		nla_nest_end(msg, bss_param);
4321 	}
4322 	if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4323 	    nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4324 		    sizeof(struct nl80211_sta_flag_update),
4325 		    &sinfo->sta_flags))
4326 		goto nla_put_failure;
4327 
4328 	PUT_SINFO_U64(T_OFFSET, t_offset);
4329 	PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4330 	PUT_SINFO_U64(BEACON_RX, rx_beacon);
4331 	PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4332 
4333 #undef PUT_SINFO
4334 #undef PUT_SINFO_U64
4335 
4336 	if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4337 		struct nlattr *tidsattr;
4338 		int tid;
4339 
4340 		tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4341 		if (!tidsattr)
4342 			goto nla_put_failure;
4343 
4344 		for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4345 			struct cfg80211_tid_stats *tidstats;
4346 			struct nlattr *tidattr;
4347 
4348 			tidstats = &sinfo->pertid[tid];
4349 
4350 			if (!tidstats->filled)
4351 				continue;
4352 
4353 			tidattr = nla_nest_start(msg, tid + 1);
4354 			if (!tidattr)
4355 				goto nla_put_failure;
4356 
4357 #define PUT_TIDVAL_U64(attr, memb) do {					\
4358 	if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&	\
4359 	    nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,		\
4360 			      tidstats->memb, NL80211_TID_STATS_PAD))	\
4361 		goto nla_put_failure;					\
4362 	} while (0)
4363 
4364 			PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4365 			PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4366 			PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4367 			PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4368 
4369 #undef PUT_TIDVAL_U64
4370 			nla_nest_end(msg, tidattr);
4371 		}
4372 
4373 		nla_nest_end(msg, tidsattr);
4374 	}
4375 
4376 	nla_nest_end(msg, sinfoattr);
4377 
4378 	if (sinfo->assoc_req_ies_len &&
4379 	    nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4380 		    sinfo->assoc_req_ies))
4381 		goto nla_put_failure;
4382 
4383 	genlmsg_end(msg, hdr);
4384 	return 0;
4385 
4386  nla_put_failure:
4387 	genlmsg_cancel(msg, hdr);
4388 	return -EMSGSIZE;
4389 }
4390 
4391 static int nl80211_dump_station(struct sk_buff *skb,
4392 				struct netlink_callback *cb)
4393 {
4394 	struct station_info sinfo;
4395 	struct cfg80211_registered_device *rdev;
4396 	struct wireless_dev *wdev;
4397 	u8 mac_addr[ETH_ALEN];
4398 	int sta_idx = cb->args[2];
4399 	int err;
4400 
4401 	err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4402 	if (err)
4403 		return err;
4404 
4405 	if (!wdev->netdev) {
4406 		err = -EINVAL;
4407 		goto out_err;
4408 	}
4409 
4410 	if (!rdev->ops->dump_station) {
4411 		err = -EOPNOTSUPP;
4412 		goto out_err;
4413 	}
4414 
4415 	while (1) {
4416 		memset(&sinfo, 0, sizeof(sinfo));
4417 		err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4418 					mac_addr, &sinfo);
4419 		if (err == -ENOENT)
4420 			break;
4421 		if (err)
4422 			goto out_err;
4423 
4424 		if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4425 				NETLINK_CB(cb->skb).portid,
4426 				cb->nlh->nlmsg_seq, NLM_F_MULTI,
4427 				rdev, wdev->netdev, mac_addr,
4428 				&sinfo) < 0)
4429 			goto out;
4430 
4431 		sta_idx++;
4432 	}
4433 
4434  out:
4435 	cb->args[2] = sta_idx;
4436 	err = skb->len;
4437  out_err:
4438 	nl80211_finish_wdev_dump(rdev);
4439 
4440 	return err;
4441 }
4442 
4443 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4444 {
4445 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
4446 	struct net_device *dev = info->user_ptr[1];
4447 	struct station_info sinfo;
4448 	struct sk_buff *msg;
4449 	u8 *mac_addr = NULL;
4450 	int err;
4451 
4452 	memset(&sinfo, 0, sizeof(sinfo));
4453 
4454 	if (!info->attrs[NL80211_ATTR_MAC])
4455 		return -EINVAL;
4456 
4457 	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4458 
4459 	if (!rdev->ops->get_station)
4460 		return -EOPNOTSUPP;
4461 
4462 	err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4463 	if (err)
4464 		return err;
4465 
4466 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4467 	if (!msg)
4468 		return -ENOMEM;
4469 
4470 	if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4471 				 info->snd_portid, info->snd_seq, 0,
4472 				 rdev, dev, mac_addr, &sinfo) < 0) {
4473 		nlmsg_free(msg);
4474 		return -ENOBUFS;
4475 	}
4476 
4477 	return genlmsg_reply(msg, info);
4478 }
4479 
4480 int cfg80211_check_station_change(struct wiphy *wiphy,
4481 				  struct station_parameters *params,
4482 				  enum cfg80211_station_type statype)
4483 {
4484 	if (params->listen_interval != -1 &&
4485 	    statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4486 		return -EINVAL;
4487 
4488 	if (params->support_p2p_ps != -1 &&
4489 	    statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4490 		return -EINVAL;
4491 
4492 	if (params->aid &&
4493 	    !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4494 	    statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4495 		return -EINVAL;
4496 
4497 	/* When you run into this, adjust the code below for the new flag */
4498 	BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4499 
4500 	switch (statype) {
4501 	case CFG80211_STA_MESH_PEER_KERNEL:
4502 	case CFG80211_STA_MESH_PEER_USER:
4503 		/*
4504 		 * No ignoring the TDLS flag here -- the userspace mesh
4505 		 * code doesn't have the bug of including TDLS in the
4506 		 * mask everywhere.
4507 		 */
4508 		if (params->sta_flags_mask &
4509 				~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4510 				  BIT(NL80211_STA_FLAG_MFP) |
4511 				  BIT(NL80211_STA_FLAG_AUTHORIZED)))
4512 			return -EINVAL;
4513 		break;
4514 	case CFG80211_STA_TDLS_PEER_SETUP:
4515 	case CFG80211_STA_TDLS_PEER_ACTIVE:
4516 		if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4517 			return -EINVAL;
4518 		/* ignore since it can't change */
4519 		params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4520 		break;
4521 	default:
4522 		/* disallow mesh-specific things */
4523 		if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4524 			return -EINVAL;
4525 		if (params->local_pm)
4526 			return -EINVAL;
4527 		if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4528 			return -EINVAL;
4529 	}
4530 
4531 	if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4532 	    statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4533 		/* TDLS can't be set, ... */
4534 		if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4535 			return -EINVAL;
4536 		/*
4537 		 * ... but don't bother the driver with it. This works around
4538 		 * a hostapd/wpa_supplicant issue -- it always includes the
4539 		 * TLDS_PEER flag in the mask even for AP mode.
4540 		 */
4541 		params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4542 	}
4543 
4544 	if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4545 	    statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4546 		/* reject other things that can't change */
4547 		if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4548 			return -EINVAL;
4549 		if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4550 			return -EINVAL;
4551 		if (params->supported_rates)
4552 			return -EINVAL;
4553 		if (params->ext_capab || params->ht_capa || params->vht_capa)
4554 			return -EINVAL;
4555 	}
4556 
4557 	if (statype != CFG80211_STA_AP_CLIENT &&
4558 	    statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4559 		if (params->vlan)
4560 			return -EINVAL;
4561 	}
4562 
4563 	switch (statype) {
4564 	case CFG80211_STA_AP_MLME_CLIENT:
4565 		/* Use this only for authorizing/unauthorizing a station */
4566 		if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4567 			return -EOPNOTSUPP;
4568 		break;
4569 	case CFG80211_STA_AP_CLIENT:
4570 	case CFG80211_STA_AP_CLIENT_UNASSOC:
4571 		/* accept only the listed bits */
4572 		if (params->sta_flags_mask &
4573 				~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4574 				  BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4575 				  BIT(NL80211_STA_FLAG_ASSOCIATED) |
4576 				  BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4577 				  BIT(NL80211_STA_FLAG_WME) |
4578 				  BIT(NL80211_STA_FLAG_MFP)))
4579 			return -EINVAL;
4580 
4581 		/* but authenticated/associated only if driver handles it */
4582 		if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4583 		    params->sta_flags_mask &
4584 				(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4585 				 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4586 			return -EINVAL;
4587 		break;
4588 	case CFG80211_STA_IBSS:
4589 	case CFG80211_STA_AP_STA:
4590 		/* reject any changes other than AUTHORIZED */
4591 		if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4592 			return -EINVAL;
4593 		break;
4594 	case CFG80211_STA_TDLS_PEER_SETUP:
4595 		/* reject any changes other than AUTHORIZED or WME */
4596 		if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4597 					       BIT(NL80211_STA_FLAG_WME)))
4598 			return -EINVAL;
4599 		/* force (at least) rates when authorizing */
4600 		if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4601 		    !params->supported_rates)
4602 			return -EINVAL;
4603 		break;
4604 	case CFG80211_STA_TDLS_PEER_ACTIVE:
4605 		/* reject any changes */
4606 		return -EINVAL;
4607 	case CFG80211_STA_MESH_PEER_KERNEL:
4608 		if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4609 			return -EINVAL;
4610 		break;
4611 	case CFG80211_STA_MESH_PEER_USER:
4612 		if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4613 		    params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4614 			return -EINVAL;
4615 		break;
4616 	}
4617 
4618 	return 0;
4619 }
4620 EXPORT_SYMBOL(cfg80211_check_station_change);
4621 
4622 /*
4623  * Get vlan interface making sure it is running and on the right wiphy.
4624  */
4625 static struct net_device *get_vlan(struct genl_info *info,
4626 				   struct cfg80211_registered_device *rdev)
4627 {
4628 	struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4629 	struct net_device *v;
4630 	int ret;
4631 
4632 	if (!vlanattr)
4633 		return NULL;
4634 
4635 	v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4636 	if (!v)
4637 		return ERR_PTR(-ENODEV);
4638 
4639 	if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4640 		ret = -EINVAL;
4641 		goto error;
4642 	}
4643 
4644 	if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4645 	    v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4646 	    v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4647 		ret = -EINVAL;
4648 		goto error;
4649 	}
4650 
4651 	if (!netif_running(v)) {
4652 		ret = -ENETDOWN;
4653 		goto error;
4654 	}
4655 
4656 	return v;
4657  error:
4658 	dev_put(v);
4659 	return ERR_PTR(ret);
4660 }
4661 
4662 static const struct nla_policy
4663 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4664 	[NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4665 	[NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4666 };
4667 
4668 static int nl80211_parse_sta_wme(struct genl_info *info,
4669 				 struct station_parameters *params)
4670 {
4671 	struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4672 	struct nlattr *nla;
4673 	int err;
4674 
4675 	/* parse WME attributes if present */
4676 	if (!info->attrs[NL80211_ATTR_STA_WME])
4677 		return 0;
4678 
4679 	nla = info->attrs[NL80211_ATTR_STA_WME];
4680 	err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4681 			       nl80211_sta_wme_policy);
4682 	if (err)
4683 		return err;
4684 
4685 	if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4686 		params->uapsd_queues = nla_get_u8(
4687 			tb[NL80211_STA_WME_UAPSD_QUEUES]);
4688 	if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4689 		return -EINVAL;
4690 
4691 	if (tb[NL80211_STA_WME_MAX_SP])
4692 		params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4693 
4694 	if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4695 		return -EINVAL;
4696 
4697 	params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4698 
4699 	return 0;
4700 }
4701 
4702 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4703 				      struct station_parameters *params)
4704 {
4705 	if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4706 		params->supported_channels =
4707 		     nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4708 		params->supported_channels_len =
4709 		     nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4710 		/*
4711 		 * Need to include at least one (first channel, number of
4712 		 * channels) tuple for each subband, and must have proper
4713 		 * tuples for the rest of the data as well.
4714 		 */
4715 		if (params->supported_channels_len < 2)
4716 			return -EINVAL;
4717 		if (params->supported_channels_len % 2)
4718 			return -EINVAL;
4719 	}
4720 
4721 	if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4722 		params->supported_oper_classes =
4723 		 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4724 		params->supported_oper_classes_len =
4725 		  nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4726 		/*
4727 		 * The value of the Length field of the Supported Operating
4728 		 * Classes element is between 2 and 253.
4729 		 */
4730 		if (params->supported_oper_classes_len < 2 ||
4731 		    params->supported_oper_classes_len > 253)
4732 			return -EINVAL;
4733 	}
4734 	return 0;
4735 }
4736 
4737 static int nl80211_set_station_tdls(struct genl_info *info,
4738 				    struct station_parameters *params)
4739 {
4740 	int err;
4741 	/* Dummy STA entry gets updated once the peer capabilities are known */
4742 	if (info->attrs[NL80211_ATTR_PEER_AID])
4743 		params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4744 	if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4745 		params->ht_capa =
4746 			nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4747 	if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4748 		params->vht_capa =
4749 			nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4750 
4751 	err = nl80211_parse_sta_channel_info(info, params);
4752 	if (err)
4753 		return err;
4754 
4755 	return nl80211_parse_sta_wme(info, params);
4756 }
4757 
4758 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4759 {
4760 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
4761 	struct net_device *dev = info->user_ptr[1];
4762 	struct station_parameters params;
4763 	u8 *mac_addr;
4764 	int err;
4765 
4766 	memset(&params, 0, sizeof(params));
4767 
4768 	if (!rdev->ops->change_station)
4769 		return -EOPNOTSUPP;
4770 
4771 	/*
4772 	 * AID and listen_interval properties can be set only for unassociated
4773 	 * station. Include these parameters here and will check them in
4774 	 * cfg80211_check_station_change().
4775 	 */
4776 	if (info->attrs[NL80211_ATTR_STA_AID])
4777 		params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4778 
4779 	if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4780 		params.listen_interval =
4781 		     nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4782 	else
4783 		params.listen_interval = -1;
4784 
4785 	if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4786 		u8 tmp;
4787 
4788 		tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4789 		if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4790 			return -EINVAL;
4791 
4792 		params.support_p2p_ps = tmp;
4793 	} else {
4794 		params.support_p2p_ps = -1;
4795 	}
4796 
4797 	if (!info->attrs[NL80211_ATTR_MAC])
4798 		return -EINVAL;
4799 
4800 	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4801 
4802 	if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4803 		params.supported_rates =
4804 			nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4805 		params.supported_rates_len =
4806 			nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4807 	}
4808 
4809 	if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4810 		params.capability =
4811 			nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4812 		params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4813 	}
4814 
4815 	if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4816 		params.ext_capab =
4817 			nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4818 		params.ext_capab_len =
4819 			nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4820 	}
4821 
4822 	if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4823 		return -EINVAL;
4824 
4825 	if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4826 		params.plink_action =
4827 			nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4828 		if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4829 			return -EINVAL;
4830 	}
4831 
4832 	if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4833 		params.plink_state =
4834 			nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4835 		if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4836 			return -EINVAL;
4837 		if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4838 			params.peer_aid = nla_get_u16(
4839 				info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4840 			if (params.peer_aid > IEEE80211_MAX_AID)
4841 				return -EINVAL;
4842 		}
4843 		params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4844 	}
4845 
4846 	if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4847 		enum nl80211_mesh_power_mode pm = nla_get_u32(
4848 			info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4849 
4850 		if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4851 		    pm > NL80211_MESH_POWER_MAX)
4852 			return -EINVAL;
4853 
4854 		params.local_pm = pm;
4855 	}
4856 
4857 	/* Include parameters for TDLS peer (will check later) */
4858 	err = nl80211_set_station_tdls(info, &params);
4859 	if (err)
4860 		return err;
4861 
4862 	params.vlan = get_vlan(info, rdev);
4863 	if (IS_ERR(params.vlan))
4864 		return PTR_ERR(params.vlan);
4865 
4866 	switch (dev->ieee80211_ptr->iftype) {
4867 	case NL80211_IFTYPE_AP:
4868 	case NL80211_IFTYPE_AP_VLAN:
4869 	case NL80211_IFTYPE_P2P_GO:
4870 	case NL80211_IFTYPE_P2P_CLIENT:
4871 	case NL80211_IFTYPE_STATION:
4872 	case NL80211_IFTYPE_ADHOC:
4873 	case NL80211_IFTYPE_MESH_POINT:
4874 		break;
4875 	default:
4876 		err = -EOPNOTSUPP;
4877 		goto out_put_vlan;
4878 	}
4879 
4880 	/* driver will call cfg80211_check_station_change() */
4881 	err = rdev_change_station(rdev, dev, mac_addr, &params);
4882 
4883  out_put_vlan:
4884 	if (params.vlan)
4885 		dev_put(params.vlan);
4886 
4887 	return err;
4888 }
4889 
4890 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4891 {
4892 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
4893 	int err;
4894 	struct net_device *dev = info->user_ptr[1];
4895 	struct station_parameters params;
4896 	u8 *mac_addr = NULL;
4897 	u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4898 			 BIT(NL80211_STA_FLAG_ASSOCIATED);
4899 
4900 	memset(&params, 0, sizeof(params));
4901 
4902 	if (!rdev->ops->add_station)
4903 		return -EOPNOTSUPP;
4904 
4905 	if (!info->attrs[NL80211_ATTR_MAC])
4906 		return -EINVAL;
4907 
4908 	if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4909 		return -EINVAL;
4910 
4911 	if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4912 		return -EINVAL;
4913 
4914 	if (!info->attrs[NL80211_ATTR_STA_AID] &&
4915 	    !info->attrs[NL80211_ATTR_PEER_AID])
4916 		return -EINVAL;
4917 
4918 	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4919 	params.supported_rates =
4920 		nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4921 	params.supported_rates_len =
4922 		nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4923 	params.listen_interval =
4924 		nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4925 
4926 	if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4927 		u8 tmp;
4928 
4929 		tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4930 		if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4931 			return -EINVAL;
4932 
4933 		params.support_p2p_ps = tmp;
4934 	} else {
4935 		/*
4936 		 * if not specified, assume it's supported for P2P GO interface,
4937 		 * and is NOT supported for AP interface
4938 		 */
4939 		params.support_p2p_ps =
4940 			dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4941 	}
4942 
4943 	if (info->attrs[NL80211_ATTR_PEER_AID])
4944 		params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4945 	else
4946 		params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4947 	if (!params.aid || params.aid > IEEE80211_MAX_AID)
4948 		return -EINVAL;
4949 
4950 	if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4951 		params.capability =
4952 			nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4953 		params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4954 	}
4955 
4956 	if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4957 		params.ext_capab =
4958 			nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4959 		params.ext_capab_len =
4960 			nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4961 	}
4962 
4963 	if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4964 		params.ht_capa =
4965 			nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4966 
4967 	if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4968 		params.vht_capa =
4969 			nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4970 
4971 	if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4972 		params.opmode_notif_used = true;
4973 		params.opmode_notif =
4974 			nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4975 	}
4976 
4977 	if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4978 		params.plink_action =
4979 			nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4980 		if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4981 			return -EINVAL;
4982 	}
4983 
4984 	err = nl80211_parse_sta_channel_info(info, &params);
4985 	if (err)
4986 		return err;
4987 
4988 	err = nl80211_parse_sta_wme(info, &params);
4989 	if (err)
4990 		return err;
4991 
4992 	if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4993 		return -EINVAL;
4994 
4995 	/* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4996 	 * as userspace might just pass through the capabilities from the IEs
4997 	 * directly, rather than enforcing this restriction and returning an
4998 	 * error in this case.
4999 	 */
5000 	if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5001 		params.ht_capa = NULL;
5002 		params.vht_capa = NULL;
5003 	}
5004 
5005 	/* When you run into this, adjust the code below for the new flag */
5006 	BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5007 
5008 	switch (dev->ieee80211_ptr->iftype) {
5009 	case NL80211_IFTYPE_AP:
5010 	case NL80211_IFTYPE_AP_VLAN:
5011 	case NL80211_IFTYPE_P2P_GO:
5012 		/* ignore WME attributes if iface/sta is not capable */
5013 		if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5014 		    !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5015 			params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5016 
5017 		/* TDLS peers cannot be added */
5018 		if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5019 		    info->attrs[NL80211_ATTR_PEER_AID])
5020 			return -EINVAL;
5021 		/* but don't bother the driver with it */
5022 		params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5023 
5024 		/* allow authenticated/associated only if driver handles it */
5025 		if (!(rdev->wiphy.features &
5026 				NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5027 		    params.sta_flags_mask & auth_assoc)
5028 			return -EINVAL;
5029 
5030 		/* Older userspace, or userspace wanting to be compatible with
5031 		 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5032 		 * and assoc flags in the mask, but assumes the station will be
5033 		 * added as associated anyway since this was the required driver
5034 		 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5035 		 * introduced.
5036 		 * In order to not bother drivers with this quirk in the API
5037 		 * set the flags in both the mask and set for new stations in
5038 		 * this case.
5039 		 */
5040 		if (!(params.sta_flags_mask & auth_assoc)) {
5041 			params.sta_flags_mask |= auth_assoc;
5042 			params.sta_flags_set |= auth_assoc;
5043 		}
5044 
5045 		/* must be last in here for error handling */
5046 		params.vlan = get_vlan(info, rdev);
5047 		if (IS_ERR(params.vlan))
5048 			return PTR_ERR(params.vlan);
5049 		break;
5050 	case NL80211_IFTYPE_MESH_POINT:
5051 		/* ignore uAPSD data */
5052 		params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5053 
5054 		/* associated is disallowed */
5055 		if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5056 			return -EINVAL;
5057 		/* TDLS peers cannot be added */
5058 		if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5059 		    info->attrs[NL80211_ATTR_PEER_AID])
5060 			return -EINVAL;
5061 		break;
5062 	case NL80211_IFTYPE_STATION:
5063 	case NL80211_IFTYPE_P2P_CLIENT:
5064 		/* ignore uAPSD data */
5065 		params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5066 
5067 		/* these are disallowed */
5068 		if (params.sta_flags_mask &
5069 				(BIT(NL80211_STA_FLAG_ASSOCIATED) |
5070 				 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5071 			return -EINVAL;
5072 		/* Only TDLS peers can be added */
5073 		if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5074 			return -EINVAL;
5075 		/* Can only add if TDLS ... */
5076 		if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5077 			return -EOPNOTSUPP;
5078 		/* ... with external setup is supported */
5079 		if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5080 			return -EOPNOTSUPP;
5081 		/*
5082 		 * Older wpa_supplicant versions always mark the TDLS peer
5083 		 * as authorized, but it shouldn't yet be.
5084 		 */
5085 		params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5086 		break;
5087 	default:
5088 		return -EOPNOTSUPP;
5089 	}
5090 
5091 	/* be aware of params.vlan when changing code here */
5092 
5093 	err = rdev_add_station(rdev, dev, mac_addr, &params);
5094 
5095 	if (params.vlan)
5096 		dev_put(params.vlan);
5097 	return err;
5098 }
5099 
5100 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5101 {
5102 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5103 	struct net_device *dev = info->user_ptr[1];
5104 	struct station_del_parameters params;
5105 
5106 	memset(&params, 0, sizeof(params));
5107 
5108 	if (info->attrs[NL80211_ATTR_MAC])
5109 		params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5110 
5111 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5112 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5113 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5114 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5115 		return -EINVAL;
5116 
5117 	if (!rdev->ops->del_station)
5118 		return -EOPNOTSUPP;
5119 
5120 	if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5121 		params.subtype =
5122 			nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5123 		if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5124 		    params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5125 			return -EINVAL;
5126 	} else {
5127 		/* Default to Deauthentication frame */
5128 		params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5129 	}
5130 
5131 	if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5132 		params.reason_code =
5133 			nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5134 		if (params.reason_code == 0)
5135 			return -EINVAL; /* 0 is reserved */
5136 	} else {
5137 		/* Default to reason code 2 */
5138 		params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5139 	}
5140 
5141 	return rdev_del_station(rdev, dev, &params);
5142 }
5143 
5144 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5145 				int flags, struct net_device *dev,
5146 				u8 *dst, u8 *next_hop,
5147 				struct mpath_info *pinfo)
5148 {
5149 	void *hdr;
5150 	struct nlattr *pinfoattr;
5151 
5152 	hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5153 	if (!hdr)
5154 		return -1;
5155 
5156 	if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5157 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5158 	    nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5159 	    nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5160 		goto nla_put_failure;
5161 
5162 	pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5163 	if (!pinfoattr)
5164 		goto nla_put_failure;
5165 	if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5166 	    nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5167 			pinfo->frame_qlen))
5168 		goto nla_put_failure;
5169 	if (((pinfo->filled & MPATH_INFO_SN) &&
5170 	     nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5171 	    ((pinfo->filled & MPATH_INFO_METRIC) &&
5172 	     nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5173 			 pinfo->metric)) ||
5174 	    ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5175 	     nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5176 			 pinfo->exptime)) ||
5177 	    ((pinfo->filled & MPATH_INFO_FLAGS) &&
5178 	     nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5179 			pinfo->flags)) ||
5180 	    ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5181 	     nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5182 			 pinfo->discovery_timeout)) ||
5183 	    ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5184 	     nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5185 			pinfo->discovery_retries)))
5186 		goto nla_put_failure;
5187 
5188 	nla_nest_end(msg, pinfoattr);
5189 
5190 	genlmsg_end(msg, hdr);
5191 	return 0;
5192 
5193  nla_put_failure:
5194 	genlmsg_cancel(msg, hdr);
5195 	return -EMSGSIZE;
5196 }
5197 
5198 static int nl80211_dump_mpath(struct sk_buff *skb,
5199 			      struct netlink_callback *cb)
5200 {
5201 	struct mpath_info pinfo;
5202 	struct cfg80211_registered_device *rdev;
5203 	struct wireless_dev *wdev;
5204 	u8 dst[ETH_ALEN];
5205 	u8 next_hop[ETH_ALEN];
5206 	int path_idx = cb->args[2];
5207 	int err;
5208 
5209 	err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5210 	if (err)
5211 		return err;
5212 
5213 	if (!rdev->ops->dump_mpath) {
5214 		err = -EOPNOTSUPP;
5215 		goto out_err;
5216 	}
5217 
5218 	if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5219 		err = -EOPNOTSUPP;
5220 		goto out_err;
5221 	}
5222 
5223 	while (1) {
5224 		err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5225 				      next_hop, &pinfo);
5226 		if (err == -ENOENT)
5227 			break;
5228 		if (err)
5229 			goto out_err;
5230 
5231 		if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5232 				       cb->nlh->nlmsg_seq, NLM_F_MULTI,
5233 				       wdev->netdev, dst, next_hop,
5234 				       &pinfo) < 0)
5235 			goto out;
5236 
5237 		path_idx++;
5238 	}
5239 
5240  out:
5241 	cb->args[2] = path_idx;
5242 	err = skb->len;
5243  out_err:
5244 	nl80211_finish_wdev_dump(rdev);
5245 	return err;
5246 }
5247 
5248 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5249 {
5250 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5251 	int err;
5252 	struct net_device *dev = info->user_ptr[1];
5253 	struct mpath_info pinfo;
5254 	struct sk_buff *msg;
5255 	u8 *dst = NULL;
5256 	u8 next_hop[ETH_ALEN];
5257 
5258 	memset(&pinfo, 0, sizeof(pinfo));
5259 
5260 	if (!info->attrs[NL80211_ATTR_MAC])
5261 		return -EINVAL;
5262 
5263 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5264 
5265 	if (!rdev->ops->get_mpath)
5266 		return -EOPNOTSUPP;
5267 
5268 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5269 		return -EOPNOTSUPP;
5270 
5271 	err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5272 	if (err)
5273 		return err;
5274 
5275 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5276 	if (!msg)
5277 		return -ENOMEM;
5278 
5279 	if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5280 				 dev, dst, next_hop, &pinfo) < 0) {
5281 		nlmsg_free(msg);
5282 		return -ENOBUFS;
5283 	}
5284 
5285 	return genlmsg_reply(msg, info);
5286 }
5287 
5288 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5289 {
5290 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5291 	struct net_device *dev = info->user_ptr[1];
5292 	u8 *dst = NULL;
5293 	u8 *next_hop = NULL;
5294 
5295 	if (!info->attrs[NL80211_ATTR_MAC])
5296 		return -EINVAL;
5297 
5298 	if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5299 		return -EINVAL;
5300 
5301 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5302 	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5303 
5304 	if (!rdev->ops->change_mpath)
5305 		return -EOPNOTSUPP;
5306 
5307 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5308 		return -EOPNOTSUPP;
5309 
5310 	return rdev_change_mpath(rdev, dev, dst, next_hop);
5311 }
5312 
5313 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5314 {
5315 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5316 	struct net_device *dev = info->user_ptr[1];
5317 	u8 *dst = NULL;
5318 	u8 *next_hop = NULL;
5319 
5320 	if (!info->attrs[NL80211_ATTR_MAC])
5321 		return -EINVAL;
5322 
5323 	if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5324 		return -EINVAL;
5325 
5326 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5327 	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5328 
5329 	if (!rdev->ops->add_mpath)
5330 		return -EOPNOTSUPP;
5331 
5332 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5333 		return -EOPNOTSUPP;
5334 
5335 	return rdev_add_mpath(rdev, dev, dst, next_hop);
5336 }
5337 
5338 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5339 {
5340 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5341 	struct net_device *dev = info->user_ptr[1];
5342 	u8 *dst = NULL;
5343 
5344 	if (info->attrs[NL80211_ATTR_MAC])
5345 		dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5346 
5347 	if (!rdev->ops->del_mpath)
5348 		return -EOPNOTSUPP;
5349 
5350 	return rdev_del_mpath(rdev, dev, dst);
5351 }
5352 
5353 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5354 {
5355 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5356 	int err;
5357 	struct net_device *dev = info->user_ptr[1];
5358 	struct mpath_info pinfo;
5359 	struct sk_buff *msg;
5360 	u8 *dst = NULL;
5361 	u8 mpp[ETH_ALEN];
5362 
5363 	memset(&pinfo, 0, sizeof(pinfo));
5364 
5365 	if (!info->attrs[NL80211_ATTR_MAC])
5366 		return -EINVAL;
5367 
5368 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5369 
5370 	if (!rdev->ops->get_mpp)
5371 		return -EOPNOTSUPP;
5372 
5373 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5374 		return -EOPNOTSUPP;
5375 
5376 	err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5377 	if (err)
5378 		return err;
5379 
5380 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5381 	if (!msg)
5382 		return -ENOMEM;
5383 
5384 	if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5385 			       dev, dst, mpp, &pinfo) < 0) {
5386 		nlmsg_free(msg);
5387 		return -ENOBUFS;
5388 	}
5389 
5390 	return genlmsg_reply(msg, info);
5391 }
5392 
5393 static int nl80211_dump_mpp(struct sk_buff *skb,
5394 			    struct netlink_callback *cb)
5395 {
5396 	struct mpath_info pinfo;
5397 	struct cfg80211_registered_device *rdev;
5398 	struct wireless_dev *wdev;
5399 	u8 dst[ETH_ALEN];
5400 	u8 mpp[ETH_ALEN];
5401 	int path_idx = cb->args[2];
5402 	int err;
5403 
5404 	err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5405 	if (err)
5406 		return err;
5407 
5408 	if (!rdev->ops->dump_mpp) {
5409 		err = -EOPNOTSUPP;
5410 		goto out_err;
5411 	}
5412 
5413 	if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5414 		err = -EOPNOTSUPP;
5415 		goto out_err;
5416 	}
5417 
5418 	while (1) {
5419 		err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5420 				    mpp, &pinfo);
5421 		if (err == -ENOENT)
5422 			break;
5423 		if (err)
5424 			goto out_err;
5425 
5426 		if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5427 				       cb->nlh->nlmsg_seq, NLM_F_MULTI,
5428 				       wdev->netdev, dst, mpp,
5429 				       &pinfo) < 0)
5430 			goto out;
5431 
5432 		path_idx++;
5433 	}
5434 
5435  out:
5436 	cb->args[2] = path_idx;
5437 	err = skb->len;
5438  out_err:
5439 	nl80211_finish_wdev_dump(rdev);
5440 	return err;
5441 }
5442 
5443 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5444 {
5445 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5446 	struct net_device *dev = info->user_ptr[1];
5447 	struct wireless_dev *wdev = dev->ieee80211_ptr;
5448 	struct bss_parameters params;
5449 	int err;
5450 
5451 	memset(&params, 0, sizeof(params));
5452 	/* default to not changing parameters */
5453 	params.use_cts_prot = -1;
5454 	params.use_short_preamble = -1;
5455 	params.use_short_slot_time = -1;
5456 	params.ap_isolate = -1;
5457 	params.ht_opmode = -1;
5458 	params.p2p_ctwindow = -1;
5459 	params.p2p_opp_ps = -1;
5460 
5461 	if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5462 		params.use_cts_prot =
5463 		    nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5464 	if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5465 		params.use_short_preamble =
5466 		    nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5467 	if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5468 		params.use_short_slot_time =
5469 		    nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5470 	if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5471 		params.basic_rates =
5472 			nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5473 		params.basic_rates_len =
5474 			nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5475 	}
5476 	if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5477 		params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5478 	if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5479 		params.ht_opmode =
5480 			nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5481 
5482 	if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5483 		if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5484 			return -EINVAL;
5485 		params.p2p_ctwindow =
5486 			nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5487 		if (params.p2p_ctwindow < 0)
5488 			return -EINVAL;
5489 		if (params.p2p_ctwindow != 0 &&
5490 		    !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5491 			return -EINVAL;
5492 	}
5493 
5494 	if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5495 		u8 tmp;
5496 
5497 		if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5498 			return -EINVAL;
5499 		tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5500 		if (tmp > 1)
5501 			return -EINVAL;
5502 		params.p2p_opp_ps = tmp;
5503 		if (params.p2p_opp_ps &&
5504 		    !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5505 			return -EINVAL;
5506 	}
5507 
5508 	if (!rdev->ops->change_bss)
5509 		return -EOPNOTSUPP;
5510 
5511 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5512 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5513 		return -EOPNOTSUPP;
5514 
5515 	wdev_lock(wdev);
5516 	err = rdev_change_bss(rdev, dev, &params);
5517 	wdev_unlock(wdev);
5518 
5519 	return err;
5520 }
5521 
5522 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5523 {
5524 	char *data = NULL;
5525 	bool is_indoor;
5526 	enum nl80211_user_reg_hint_type user_reg_hint_type;
5527 	u32 owner_nlportid;
5528 
5529 	/*
5530 	 * You should only get this when cfg80211 hasn't yet initialized
5531 	 * completely when built-in to the kernel right between the time
5532 	 * window between nl80211_init() and regulatory_init(), if that is
5533 	 * even possible.
5534 	 */
5535 	if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5536 		return -EINPROGRESS;
5537 
5538 	if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5539 		user_reg_hint_type =
5540 		  nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5541 	else
5542 		user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5543 
5544 	switch (user_reg_hint_type) {
5545 	case NL80211_USER_REG_HINT_USER:
5546 	case NL80211_USER_REG_HINT_CELL_BASE:
5547 		if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5548 			return -EINVAL;
5549 
5550 		data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5551 		return regulatory_hint_user(data, user_reg_hint_type);
5552 	case NL80211_USER_REG_HINT_INDOOR:
5553 		if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5554 			owner_nlportid = info->snd_portid;
5555 			is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5556 		} else {
5557 			owner_nlportid = 0;
5558 			is_indoor = true;
5559 		}
5560 
5561 		return regulatory_hint_indoor(is_indoor, owner_nlportid);
5562 	default:
5563 		return -EINVAL;
5564 	}
5565 }
5566 
5567 static int nl80211_get_mesh_config(struct sk_buff *skb,
5568 				   struct genl_info *info)
5569 {
5570 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5571 	struct net_device *dev = info->user_ptr[1];
5572 	struct wireless_dev *wdev = dev->ieee80211_ptr;
5573 	struct mesh_config cur_params;
5574 	int err = 0;
5575 	void *hdr;
5576 	struct nlattr *pinfoattr;
5577 	struct sk_buff *msg;
5578 
5579 	if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5580 		return -EOPNOTSUPP;
5581 
5582 	if (!rdev->ops->get_mesh_config)
5583 		return -EOPNOTSUPP;
5584 
5585 	wdev_lock(wdev);
5586 	/* If not connected, get default parameters */
5587 	if (!wdev->mesh_id_len)
5588 		memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5589 	else
5590 		err = rdev_get_mesh_config(rdev, dev, &cur_params);
5591 	wdev_unlock(wdev);
5592 
5593 	if (err)
5594 		return err;
5595 
5596 	/* Draw up a netlink message to send back */
5597 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5598 	if (!msg)
5599 		return -ENOMEM;
5600 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5601 			     NL80211_CMD_GET_MESH_CONFIG);
5602 	if (!hdr)
5603 		goto out;
5604 	pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5605 	if (!pinfoattr)
5606 		goto nla_put_failure;
5607 	if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5608 	    nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5609 			cur_params.dot11MeshRetryTimeout) ||
5610 	    nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5611 			cur_params.dot11MeshConfirmTimeout) ||
5612 	    nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5613 			cur_params.dot11MeshHoldingTimeout) ||
5614 	    nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5615 			cur_params.dot11MeshMaxPeerLinks) ||
5616 	    nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5617 		       cur_params.dot11MeshMaxRetries) ||
5618 	    nla_put_u8(msg, NL80211_MESHCONF_TTL,
5619 		       cur_params.dot11MeshTTL) ||
5620 	    nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5621 		       cur_params.element_ttl) ||
5622 	    nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5623 		       cur_params.auto_open_plinks) ||
5624 	    nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5625 			cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5626 	    nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5627 		       cur_params.dot11MeshHWMPmaxPREQretries) ||
5628 	    nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5629 			cur_params.path_refresh_time) ||
5630 	    nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5631 			cur_params.min_discovery_timeout) ||
5632 	    nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5633 			cur_params.dot11MeshHWMPactivePathTimeout) ||
5634 	    nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5635 			cur_params.dot11MeshHWMPpreqMinInterval) ||
5636 	    nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5637 			cur_params.dot11MeshHWMPperrMinInterval) ||
5638 	    nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5639 			cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5640 	    nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5641 		       cur_params.dot11MeshHWMPRootMode) ||
5642 	    nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5643 			cur_params.dot11MeshHWMPRannInterval) ||
5644 	    nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5645 		       cur_params.dot11MeshGateAnnouncementProtocol) ||
5646 	    nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5647 		       cur_params.dot11MeshForwarding) ||
5648 	    nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5649 			cur_params.rssi_threshold) ||
5650 	    nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5651 			cur_params.ht_opmode) ||
5652 	    nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5653 			cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5654 	    nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5655 			cur_params.dot11MeshHWMProotInterval) ||
5656 	    nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5657 			cur_params.dot11MeshHWMPconfirmationInterval) ||
5658 	    nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5659 			cur_params.power_mode) ||
5660 	    nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5661 			cur_params.dot11MeshAwakeWindowDuration) ||
5662 	    nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5663 			cur_params.plink_timeout))
5664 		goto nla_put_failure;
5665 	nla_nest_end(msg, pinfoattr);
5666 	genlmsg_end(msg, hdr);
5667 	return genlmsg_reply(msg, info);
5668 
5669  nla_put_failure:
5670 	genlmsg_cancel(msg, hdr);
5671  out:
5672 	nlmsg_free(msg);
5673 	return -ENOBUFS;
5674 }
5675 
5676 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5677 	[NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5678 	[NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5679 	[NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5680 	[NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5681 	[NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5682 	[NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5683 	[NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5684 	[NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5685 	[NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5686 	[NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5687 	[NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5688 	[NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5689 	[NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5690 	[NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5691 	[NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5692 	[NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5693 	[NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5694 	[NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5695 	[NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5696 	[NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5697 	[NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5698 	[NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5699 	[NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5700 	[NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5701 	[NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5702 	[NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5703 	[NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5704 	[NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5705 };
5706 
5707 static const struct nla_policy
5708 	nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5709 	[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5710 	[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5711 	[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5712 	[NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5713 	[NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5714 	[NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5715 	[NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5716 				    .len = IEEE80211_MAX_DATA_LEN },
5717 	[NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5718 };
5719 
5720 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5721 {
5722 	u8 val = nla_get_u8(nla);
5723 	if (val < min || val > max)
5724 		return -EINVAL;
5725 	*out = val;
5726 	return 0;
5727 }
5728 
5729 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5730 {
5731 	u8 val = nla_get_u8(nla);
5732 	if (val < min || val > max)
5733 		return -EINVAL;
5734 	*out = val;
5735 	return 0;
5736 }
5737 
5738 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5739 {
5740 	u16 val = nla_get_u16(nla);
5741 	if (val < min || val > max)
5742 		return -EINVAL;
5743 	*out = val;
5744 	return 0;
5745 }
5746 
5747 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5748 {
5749 	u32 val = nla_get_u32(nla);
5750 	if (val < min || val > max)
5751 		return -EINVAL;
5752 	*out = val;
5753 	return 0;
5754 }
5755 
5756 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5757 {
5758 	s32 val = nla_get_s32(nla);
5759 	if (val < min || val > max)
5760 		return -EINVAL;
5761 	*out = val;
5762 	return 0;
5763 }
5764 
5765 static int nl80211_check_power_mode(const struct nlattr *nla,
5766 				    enum nl80211_mesh_power_mode min,
5767 				    enum nl80211_mesh_power_mode max,
5768 				    enum nl80211_mesh_power_mode *out)
5769 {
5770 	u32 val = nla_get_u32(nla);
5771 	if (val < min || val > max)
5772 		return -EINVAL;
5773 	*out = val;
5774 	return 0;
5775 }
5776 
5777 static int nl80211_parse_mesh_config(struct genl_info *info,
5778 				     struct mesh_config *cfg,
5779 				     u32 *mask_out)
5780 {
5781 	struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5782 	u32 mask = 0;
5783 	u16 ht_opmode;
5784 
5785 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5786 do {									    \
5787 	if (tb[attr]) {							    \
5788 		if (fn(tb[attr], min, max, &cfg->param))		    \
5789 			return -EINVAL;					    \
5790 		mask |= (1 << (attr - 1));				    \
5791 	}								    \
5792 } while (0)
5793 
5794 	if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5795 		return -EINVAL;
5796 	if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5797 			     info->attrs[NL80211_ATTR_MESH_CONFIG],
5798 			     nl80211_meshconf_params_policy))
5799 		return -EINVAL;
5800 
5801 	/* This makes sure that there aren't more than 32 mesh config
5802 	 * parameters (otherwise our bitfield scheme would not work.) */
5803 	BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5804 
5805 	/* Fill in the params struct */
5806 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5807 				  mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5808 				  nl80211_check_u16);
5809 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5810 				  mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5811 				  nl80211_check_u16);
5812 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5813 				  mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5814 				  nl80211_check_u16);
5815 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5816 				  mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5817 				  nl80211_check_u16);
5818 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5819 				  mask, NL80211_MESHCONF_MAX_RETRIES,
5820 				  nl80211_check_u8);
5821 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5822 				  mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5823 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5824 				  mask, NL80211_MESHCONF_ELEMENT_TTL,
5825 				  nl80211_check_u8);
5826 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5827 				  mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5828 				  nl80211_check_bool);
5829 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5830 				  1, 255, mask,
5831 				  NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5832 				  nl80211_check_u32);
5833 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5834 				  mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5835 				  nl80211_check_u8);
5836 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5837 				  mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5838 				  nl80211_check_u32);
5839 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5840 				  mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5841 				  nl80211_check_u16);
5842 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5843 				  1, 65535, mask,
5844 				  NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5845 				  nl80211_check_u32);
5846 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5847 				  1, 65535, mask,
5848 				  NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5849 				  nl80211_check_u16);
5850 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5851 				  1, 65535, mask,
5852 				  NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5853 				  nl80211_check_u16);
5854 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5855 				  dot11MeshHWMPnetDiameterTraversalTime,
5856 				  1, 65535, mask,
5857 				  NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5858 				  nl80211_check_u16);
5859 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5860 				  mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5861 				  nl80211_check_u8);
5862 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5863 				  mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5864 				  nl80211_check_u16);
5865 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5866 				  dot11MeshGateAnnouncementProtocol, 0, 1,
5867 				  mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5868 				  nl80211_check_bool);
5869 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5870 				  mask, NL80211_MESHCONF_FORWARDING,
5871 				  nl80211_check_bool);
5872 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5873 				  mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5874 				  nl80211_check_s32);
5875 	/*
5876 	 * Check HT operation mode based on
5877 	 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5878 	 */
5879 	if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5880 		ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5881 
5882 		if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5883 				  IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5884 				  IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5885 			return -EINVAL;
5886 
5887 		if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5888 		    (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5889 			return -EINVAL;
5890 
5891 		switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5892 		case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5893 		case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5894 			if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5895 				return -EINVAL;
5896 			break;
5897 		case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5898 		case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5899 			if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5900 				return -EINVAL;
5901 			break;
5902 		}
5903 		cfg->ht_opmode = ht_opmode;
5904 	}
5905 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5906 				  1, 65535, mask,
5907 				  NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5908 				  nl80211_check_u32);
5909 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5910 				  mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5911 				  nl80211_check_u16);
5912 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5913 				  dot11MeshHWMPconfirmationInterval,
5914 				  1, 65535, mask,
5915 				  NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5916 				  nl80211_check_u16);
5917 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5918 				  NL80211_MESH_POWER_ACTIVE,
5919 				  NL80211_MESH_POWER_MAX,
5920 				  mask, NL80211_MESHCONF_POWER_MODE,
5921 				  nl80211_check_power_mode);
5922 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5923 				  0, 65535, mask,
5924 				  NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5925 	FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5926 				  mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5927 				  nl80211_check_u32);
5928 	if (mask_out)
5929 		*mask_out = mask;
5930 
5931 	return 0;
5932 
5933 #undef FILL_IN_MESH_PARAM_IF_SET
5934 }
5935 
5936 static int nl80211_parse_mesh_setup(struct genl_info *info,
5937 				     struct mesh_setup *setup)
5938 {
5939 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5940 	struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5941 
5942 	if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5943 		return -EINVAL;
5944 	if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5945 			     info->attrs[NL80211_ATTR_MESH_SETUP],
5946 			     nl80211_mesh_setup_params_policy))
5947 		return -EINVAL;
5948 
5949 	if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5950 		setup->sync_method =
5951 		(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5952 		 IEEE80211_SYNC_METHOD_VENDOR :
5953 		 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5954 
5955 	if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5956 		setup->path_sel_proto =
5957 		(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5958 		 IEEE80211_PATH_PROTOCOL_VENDOR :
5959 		 IEEE80211_PATH_PROTOCOL_HWMP;
5960 
5961 	if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5962 		setup->path_metric =
5963 		(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5964 		 IEEE80211_PATH_METRIC_VENDOR :
5965 		 IEEE80211_PATH_METRIC_AIRTIME;
5966 
5967 	if (tb[NL80211_MESH_SETUP_IE]) {
5968 		struct nlattr *ieattr =
5969 			tb[NL80211_MESH_SETUP_IE];
5970 		if (!is_valid_ie_attr(ieattr))
5971 			return -EINVAL;
5972 		setup->ie = nla_data(ieattr);
5973 		setup->ie_len = nla_len(ieattr);
5974 	}
5975 	if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5976 	    !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5977 		return -EINVAL;
5978 	setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5979 	setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5980 	setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5981 	if (setup->is_secure)
5982 		setup->user_mpm = true;
5983 
5984 	if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5985 		if (!setup->user_mpm)
5986 			return -EINVAL;
5987 		setup->auth_id =
5988 			nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5989 	}
5990 
5991 	return 0;
5992 }
5993 
5994 static int nl80211_update_mesh_config(struct sk_buff *skb,
5995 				      struct genl_info *info)
5996 {
5997 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
5998 	struct net_device *dev = info->user_ptr[1];
5999 	struct wireless_dev *wdev = dev->ieee80211_ptr;
6000 	struct mesh_config cfg;
6001 	u32 mask;
6002 	int err;
6003 
6004 	if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6005 		return -EOPNOTSUPP;
6006 
6007 	if (!rdev->ops->update_mesh_config)
6008 		return -EOPNOTSUPP;
6009 
6010 	err = nl80211_parse_mesh_config(info, &cfg, &mask);
6011 	if (err)
6012 		return err;
6013 
6014 	wdev_lock(wdev);
6015 	if (!wdev->mesh_id_len)
6016 		err = -ENOLINK;
6017 
6018 	if (!err)
6019 		err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6020 
6021 	wdev_unlock(wdev);
6022 
6023 	return err;
6024 }
6025 
6026 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6027 			      struct sk_buff *msg)
6028 {
6029 	struct nlattr *nl_reg_rules;
6030 	unsigned int i;
6031 
6032 	if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6033 	    (regdom->dfs_region &&
6034 	     nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6035 		goto nla_put_failure;
6036 
6037 	nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6038 	if (!nl_reg_rules)
6039 		goto nla_put_failure;
6040 
6041 	for (i = 0; i < regdom->n_reg_rules; i++) {
6042 		struct nlattr *nl_reg_rule;
6043 		const struct ieee80211_reg_rule *reg_rule;
6044 		const struct ieee80211_freq_range *freq_range;
6045 		const struct ieee80211_power_rule *power_rule;
6046 		unsigned int max_bandwidth_khz;
6047 
6048 		reg_rule = &regdom->reg_rules[i];
6049 		freq_range = &reg_rule->freq_range;
6050 		power_rule = &reg_rule->power_rule;
6051 
6052 		nl_reg_rule = nla_nest_start(msg, i);
6053 		if (!nl_reg_rule)
6054 			goto nla_put_failure;
6055 
6056 		max_bandwidth_khz = freq_range->max_bandwidth_khz;
6057 		if (!max_bandwidth_khz)
6058 			max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6059 								  reg_rule);
6060 
6061 		if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6062 				reg_rule->flags) ||
6063 		    nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6064 				freq_range->start_freq_khz) ||
6065 		    nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6066 				freq_range->end_freq_khz) ||
6067 		    nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6068 				max_bandwidth_khz) ||
6069 		    nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6070 				power_rule->max_antenna_gain) ||
6071 		    nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6072 				power_rule->max_eirp) ||
6073 		    nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6074 				reg_rule->dfs_cac_ms))
6075 			goto nla_put_failure;
6076 
6077 		nla_nest_end(msg, nl_reg_rule);
6078 	}
6079 
6080 	nla_nest_end(msg, nl_reg_rules);
6081 	return 0;
6082 
6083 nla_put_failure:
6084 	return -EMSGSIZE;
6085 }
6086 
6087 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6088 {
6089 	const struct ieee80211_regdomain *regdom = NULL;
6090 	struct cfg80211_registered_device *rdev;
6091 	struct wiphy *wiphy = NULL;
6092 	struct sk_buff *msg;
6093 	void *hdr;
6094 
6095 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6096 	if (!msg)
6097 		return -ENOBUFS;
6098 
6099 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6100 			     NL80211_CMD_GET_REG);
6101 	if (!hdr)
6102 		goto put_failure;
6103 
6104 	if (info->attrs[NL80211_ATTR_WIPHY]) {
6105 		bool self_managed;
6106 
6107 		rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6108 		if (IS_ERR(rdev)) {
6109 			nlmsg_free(msg);
6110 			return PTR_ERR(rdev);
6111 		}
6112 
6113 		wiphy = &rdev->wiphy;
6114 		self_managed = wiphy->regulatory_flags &
6115 			       REGULATORY_WIPHY_SELF_MANAGED;
6116 		regdom = get_wiphy_regdom(wiphy);
6117 
6118 		/* a self-managed-reg device must have a private regdom */
6119 		if (WARN_ON(!regdom && self_managed)) {
6120 			nlmsg_free(msg);
6121 			return -EINVAL;
6122 		}
6123 
6124 		if (regdom &&
6125 		    nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6126 			goto nla_put_failure;
6127 	}
6128 
6129 	if (!wiphy && reg_last_request_cell_base() &&
6130 	    nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6131 			NL80211_USER_REG_HINT_CELL_BASE))
6132 		goto nla_put_failure;
6133 
6134 	rcu_read_lock();
6135 
6136 	if (!regdom)
6137 		regdom = rcu_dereference(cfg80211_regdomain);
6138 
6139 	if (nl80211_put_regdom(regdom, msg))
6140 		goto nla_put_failure_rcu;
6141 
6142 	rcu_read_unlock();
6143 
6144 	genlmsg_end(msg, hdr);
6145 	return genlmsg_reply(msg, info);
6146 
6147 nla_put_failure_rcu:
6148 	rcu_read_unlock();
6149 nla_put_failure:
6150 	genlmsg_cancel(msg, hdr);
6151 put_failure:
6152 	nlmsg_free(msg);
6153 	return -EMSGSIZE;
6154 }
6155 
6156 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6157 			       u32 seq, int flags, struct wiphy *wiphy,
6158 			       const struct ieee80211_regdomain *regdom)
6159 {
6160 	void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6161 				   NL80211_CMD_GET_REG);
6162 
6163 	if (!hdr)
6164 		return -1;
6165 
6166 	genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6167 
6168 	if (nl80211_put_regdom(regdom, msg))
6169 		goto nla_put_failure;
6170 
6171 	if (!wiphy && reg_last_request_cell_base() &&
6172 	    nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6173 			NL80211_USER_REG_HINT_CELL_BASE))
6174 		goto nla_put_failure;
6175 
6176 	if (wiphy &&
6177 	    nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6178 		goto nla_put_failure;
6179 
6180 	if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6181 	    nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6182 		goto nla_put_failure;
6183 
6184 	genlmsg_end(msg, hdr);
6185 	return 0;
6186 
6187 nla_put_failure:
6188 	genlmsg_cancel(msg, hdr);
6189 	return -EMSGSIZE;
6190 }
6191 
6192 static int nl80211_get_reg_dump(struct sk_buff *skb,
6193 				struct netlink_callback *cb)
6194 {
6195 	const struct ieee80211_regdomain *regdom = NULL;
6196 	struct cfg80211_registered_device *rdev;
6197 	int err, reg_idx, start = cb->args[2];
6198 
6199 	rtnl_lock();
6200 
6201 	if (cfg80211_regdomain && start == 0) {
6202 		err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6203 					  NLM_F_MULTI, NULL,
6204 					  rtnl_dereference(cfg80211_regdomain));
6205 		if (err < 0)
6206 			goto out_err;
6207 	}
6208 
6209 	/* the global regdom is idx 0 */
6210 	reg_idx = 1;
6211 	list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6212 		regdom = get_wiphy_regdom(&rdev->wiphy);
6213 		if (!regdom)
6214 			continue;
6215 
6216 		if (++reg_idx <= start)
6217 			continue;
6218 
6219 		err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6220 					  NLM_F_MULTI, &rdev->wiphy, regdom);
6221 		if (err < 0) {
6222 			reg_idx--;
6223 			break;
6224 		}
6225 	}
6226 
6227 	cb->args[2] = reg_idx;
6228 	err = skb->len;
6229 out_err:
6230 	rtnl_unlock();
6231 	return err;
6232 }
6233 
6234 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6235 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6236 	[NL80211_ATTR_REG_RULE_FLAGS]		= { .type = NLA_U32 },
6237 	[NL80211_ATTR_FREQ_RANGE_START]		= { .type = NLA_U32 },
6238 	[NL80211_ATTR_FREQ_RANGE_END]		= { .type = NLA_U32 },
6239 	[NL80211_ATTR_FREQ_RANGE_MAX_BW]	= { .type = NLA_U32 },
6240 	[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]	= { .type = NLA_U32 },
6241 	[NL80211_ATTR_POWER_RULE_MAX_EIRP]	= { .type = NLA_U32 },
6242 	[NL80211_ATTR_DFS_CAC_TIME]		= { .type = NLA_U32 },
6243 };
6244 
6245 static int parse_reg_rule(struct nlattr *tb[],
6246 	struct ieee80211_reg_rule *reg_rule)
6247 {
6248 	struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6249 	struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6250 
6251 	if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6252 		return -EINVAL;
6253 	if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6254 		return -EINVAL;
6255 	if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6256 		return -EINVAL;
6257 	if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6258 		return -EINVAL;
6259 	if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6260 		return -EINVAL;
6261 
6262 	reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6263 
6264 	freq_range->start_freq_khz =
6265 		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6266 	freq_range->end_freq_khz =
6267 		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6268 	freq_range->max_bandwidth_khz =
6269 		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6270 
6271 	power_rule->max_eirp =
6272 		nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6273 
6274 	if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6275 		power_rule->max_antenna_gain =
6276 			nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6277 
6278 	if (tb[NL80211_ATTR_DFS_CAC_TIME])
6279 		reg_rule->dfs_cac_ms =
6280 			nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6281 
6282 	return 0;
6283 }
6284 
6285 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6286 {
6287 	struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6288 	struct nlattr *nl_reg_rule;
6289 	char *alpha2;
6290 	int rem_reg_rules, r;
6291 	u32 num_rules = 0, rule_idx = 0, size_of_regd;
6292 	enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6293 	struct ieee80211_regdomain *rd;
6294 
6295 	if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6296 		return -EINVAL;
6297 
6298 	if (!info->attrs[NL80211_ATTR_REG_RULES])
6299 		return -EINVAL;
6300 
6301 	alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6302 
6303 	if (info->attrs[NL80211_ATTR_DFS_REGION])
6304 		dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6305 
6306 	nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6307 			    rem_reg_rules) {
6308 		num_rules++;
6309 		if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6310 			return -EINVAL;
6311 	}
6312 
6313 	if (!reg_is_valid_request(alpha2))
6314 		return -EINVAL;
6315 
6316 	size_of_regd = sizeof(struct ieee80211_regdomain) +
6317 		       num_rules * sizeof(struct ieee80211_reg_rule);
6318 
6319 	rd = kzalloc(size_of_regd, GFP_KERNEL);
6320 	if (!rd)
6321 		return -ENOMEM;
6322 
6323 	rd->n_reg_rules = num_rules;
6324 	rd->alpha2[0] = alpha2[0];
6325 	rd->alpha2[1] = alpha2[1];
6326 
6327 	/*
6328 	 * Disable DFS master mode if the DFS region was
6329 	 * not supported or known on this kernel.
6330 	 */
6331 	if (reg_supported_dfs_region(dfs_region))
6332 		rd->dfs_region = dfs_region;
6333 
6334 	nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6335 			    rem_reg_rules) {
6336 		r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6337 				     nl_reg_rule, reg_rule_policy);
6338 		if (r)
6339 			goto bad_reg;
6340 		r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6341 		if (r)
6342 			goto bad_reg;
6343 
6344 		rule_idx++;
6345 
6346 		if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6347 			r = -EINVAL;
6348 			goto bad_reg;
6349 		}
6350 	}
6351 
6352 	/* set_regdom takes ownership of rd */
6353 	return set_regdom(rd, REGD_SOURCE_CRDA);
6354  bad_reg:
6355 	kfree(rd);
6356 	return r;
6357 }
6358 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6359 
6360 static int validate_scan_freqs(struct nlattr *freqs)
6361 {
6362 	struct nlattr *attr1, *attr2;
6363 	int n_channels = 0, tmp1, tmp2;
6364 
6365 	nla_for_each_nested(attr1, freqs, tmp1) {
6366 		n_channels++;
6367 		/*
6368 		 * Some hardware has a limited channel list for
6369 		 * scanning, and it is pretty much nonsensical
6370 		 * to scan for a channel twice, so disallow that
6371 		 * and don't require drivers to check that the
6372 		 * channel list they get isn't longer than what
6373 		 * they can scan, as long as they can scan all
6374 		 * the channels they registered at once.
6375 		 */
6376 		nla_for_each_nested(attr2, freqs, tmp2)
6377 			if (attr1 != attr2 &&
6378 			    nla_get_u32(attr1) == nla_get_u32(attr2))
6379 				return 0;
6380 	}
6381 
6382 	return n_channels;
6383 }
6384 
6385 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6386 {
6387 	return b < NUM_NL80211_BANDS && wiphy->bands[b];
6388 }
6389 
6390 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6391 			    struct cfg80211_bss_selection *bss_select)
6392 {
6393 	struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6394 	struct nlattr *nest;
6395 	int err;
6396 	bool found = false;
6397 	int i;
6398 
6399 	/* only process one nested attribute */
6400 	nest = nla_data(nla);
6401 	if (!nla_ok(nest, nla_len(nest)))
6402 		return -EINVAL;
6403 
6404 	err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6405 			       nl80211_bss_select_policy);
6406 	if (err)
6407 		return err;
6408 
6409 	/* only one attribute may be given */
6410 	for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6411 		if (attr[i]) {
6412 			if (found)
6413 				return -EINVAL;
6414 			found = true;
6415 		}
6416 	}
6417 
6418 	bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6419 
6420 	if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6421 		bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6422 
6423 	if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6424 		bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6425 		bss_select->param.band_pref =
6426 			nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6427 		if (!is_band_valid(wiphy, bss_select->param.band_pref))
6428 			return -EINVAL;
6429 	}
6430 
6431 	if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6432 		struct nl80211_bss_select_rssi_adjust *adj_param;
6433 
6434 		adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6435 		bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6436 		bss_select->param.adjust.band = adj_param->band;
6437 		bss_select->param.adjust.delta = adj_param->delta;
6438 		if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6439 			return -EINVAL;
6440 	}
6441 
6442 	/* user-space did not provide behaviour attribute */
6443 	if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6444 		return -EINVAL;
6445 
6446 	if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6447 		return -EINVAL;
6448 
6449 	return 0;
6450 }
6451 
6452 static int nl80211_parse_random_mac(struct nlattr **attrs,
6453 				    u8 *mac_addr, u8 *mac_addr_mask)
6454 {
6455 	int i;
6456 
6457 	if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6458 		eth_zero_addr(mac_addr);
6459 		eth_zero_addr(mac_addr_mask);
6460 		mac_addr[0] = 0x2;
6461 		mac_addr_mask[0] = 0x3;
6462 
6463 		return 0;
6464 	}
6465 
6466 	/* need both or none */
6467 	if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6468 		return -EINVAL;
6469 
6470 	memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6471 	memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6472 
6473 	/* don't allow or configure an mcast address */
6474 	if (!is_multicast_ether_addr(mac_addr_mask) ||
6475 	    is_multicast_ether_addr(mac_addr))
6476 		return -EINVAL;
6477 
6478 	/*
6479 	 * allow users to pass a MAC address that has bits set outside
6480 	 * of the mask, but don't bother drivers with having to deal
6481 	 * with such bits
6482 	 */
6483 	for (i = 0; i < ETH_ALEN; i++)
6484 		mac_addr[i] &= mac_addr_mask[i];
6485 
6486 	return 0;
6487 }
6488 
6489 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6490 {
6491 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
6492 	struct wireless_dev *wdev = info->user_ptr[1];
6493 	struct cfg80211_scan_request *request;
6494 	struct nlattr *attr;
6495 	struct wiphy *wiphy;
6496 	int err, tmp, n_ssids = 0, n_channels, i;
6497 	size_t ie_len;
6498 
6499 	if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6500 		return -EINVAL;
6501 
6502 	wiphy = &rdev->wiphy;
6503 
6504 	if (wdev->iftype == NL80211_IFTYPE_NAN)
6505 		return -EOPNOTSUPP;
6506 
6507 	if (!rdev->ops->scan)
6508 		return -EOPNOTSUPP;
6509 
6510 	if (rdev->scan_req || rdev->scan_msg) {
6511 		err = -EBUSY;
6512 		goto unlock;
6513 	}
6514 
6515 	if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6516 		n_channels = validate_scan_freqs(
6517 				info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6518 		if (!n_channels) {
6519 			err = -EINVAL;
6520 			goto unlock;
6521 		}
6522 	} else {
6523 		n_channels = ieee80211_get_num_supported_channels(wiphy);
6524 	}
6525 
6526 	if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6527 		nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6528 			n_ssids++;
6529 
6530 	if (n_ssids > wiphy->max_scan_ssids) {
6531 		err = -EINVAL;
6532 		goto unlock;
6533 	}
6534 
6535 	if (info->attrs[NL80211_ATTR_IE])
6536 		ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6537 	else
6538 		ie_len = 0;
6539 
6540 	if (ie_len > wiphy->max_scan_ie_len) {
6541 		err = -EINVAL;
6542 		goto unlock;
6543 	}
6544 
6545 	request = kzalloc(sizeof(*request)
6546 			+ sizeof(*request->ssids) * n_ssids
6547 			+ sizeof(*request->channels) * n_channels
6548 			+ ie_len, GFP_KERNEL);
6549 	if (!request) {
6550 		err = -ENOMEM;
6551 		goto unlock;
6552 	}
6553 
6554 	if (n_ssids)
6555 		request->ssids = (void *)&request->channels[n_channels];
6556 	request->n_ssids = n_ssids;
6557 	if (ie_len) {
6558 		if (n_ssids)
6559 			request->ie = (void *)(request->ssids + n_ssids);
6560 		else
6561 			request->ie = (void *)(request->channels + n_channels);
6562 	}
6563 
6564 	i = 0;
6565 	if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6566 		/* user specified, bail out if channel not found */
6567 		nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6568 			struct ieee80211_channel *chan;
6569 
6570 			chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6571 
6572 			if (!chan) {
6573 				err = -EINVAL;
6574 				goto out_free;
6575 			}
6576 
6577 			/* ignore disabled channels */
6578 			if (chan->flags & IEEE80211_CHAN_DISABLED)
6579 				continue;
6580 
6581 			request->channels[i] = chan;
6582 			i++;
6583 		}
6584 	} else {
6585 		enum nl80211_band band;
6586 
6587 		/* all channels */
6588 		for (band = 0; band < NUM_NL80211_BANDS; band++) {
6589 			int j;
6590 
6591 			if (!wiphy->bands[band])
6592 				continue;
6593 			for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6594 				struct ieee80211_channel *chan;
6595 
6596 				chan = &wiphy->bands[band]->channels[j];
6597 
6598 				if (chan->flags & IEEE80211_CHAN_DISABLED)
6599 					continue;
6600 
6601 				request->channels[i] = chan;
6602 				i++;
6603 			}
6604 		}
6605 	}
6606 
6607 	if (!i) {
6608 		err = -EINVAL;
6609 		goto out_free;
6610 	}
6611 
6612 	request->n_channels = i;
6613 
6614 	i = 0;
6615 	if (n_ssids) {
6616 		nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6617 			if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6618 				err = -EINVAL;
6619 				goto out_free;
6620 			}
6621 			request->ssids[i].ssid_len = nla_len(attr);
6622 			memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6623 			i++;
6624 		}
6625 	}
6626 
6627 	if (info->attrs[NL80211_ATTR_IE]) {
6628 		request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6629 		memcpy((void *)request->ie,
6630 		       nla_data(info->attrs[NL80211_ATTR_IE]),
6631 		       request->ie_len);
6632 	}
6633 
6634 	for (i = 0; i < NUM_NL80211_BANDS; i++)
6635 		if (wiphy->bands[i])
6636 			request->rates[i] =
6637 				(1 << wiphy->bands[i]->n_bitrates) - 1;
6638 
6639 	if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6640 		nla_for_each_nested(attr,
6641 				    info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6642 				    tmp) {
6643 			enum nl80211_band band = nla_type(attr);
6644 
6645 			if (band < 0 || band >= NUM_NL80211_BANDS) {
6646 				err = -EINVAL;
6647 				goto out_free;
6648 			}
6649 
6650 			if (!wiphy->bands[band])
6651 				continue;
6652 
6653 			err = ieee80211_get_ratemask(wiphy->bands[band],
6654 						     nla_data(attr),
6655 						     nla_len(attr),
6656 						     &request->rates[band]);
6657 			if (err)
6658 				goto out_free;
6659 		}
6660 	}
6661 
6662 	if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6663 		if (!wiphy_ext_feature_isset(wiphy,
6664 					NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6665 			err = -EOPNOTSUPP;
6666 			goto out_free;
6667 		}
6668 
6669 		request->duration =
6670 			nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6671 		request->duration_mandatory =
6672 			nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6673 	}
6674 
6675 	if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6676 		request->flags = nla_get_u32(
6677 			info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6678 		if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6679 		    !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6680 			err = -EOPNOTSUPP;
6681 			goto out_free;
6682 		}
6683 
6684 		if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6685 			if (!(wiphy->features &
6686 					NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6687 				err = -EOPNOTSUPP;
6688 				goto out_free;
6689 			}
6690 
6691 			if (wdev->current_bss) {
6692 				err = -EOPNOTSUPP;
6693 				goto out_free;
6694 			}
6695 
6696 			err = nl80211_parse_random_mac(info->attrs,
6697 						       request->mac_addr,
6698 						       request->mac_addr_mask);
6699 			if (err)
6700 				goto out_free;
6701 		}
6702 	}
6703 
6704 	request->no_cck =
6705 		nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6706 
6707 	/* Initial implementation used NL80211_ATTR_MAC to set the specific
6708 	 * BSSID to scan for. This was problematic because that same attribute
6709 	 * was already used for another purpose (local random MAC address). The
6710 	 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6711 	 * compatibility with older userspace components, also use the
6712 	 * NL80211_ATTR_MAC value here if it can be determined to be used for
6713 	 * the specific BSSID use case instead of the random MAC address
6714 	 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6715 	 */
6716 	if (info->attrs[NL80211_ATTR_BSSID])
6717 		memcpy(request->bssid,
6718 		       nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6719 	else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6720 		 info->attrs[NL80211_ATTR_MAC])
6721 		memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6722 		       ETH_ALEN);
6723 	else
6724 		eth_broadcast_addr(request->bssid);
6725 
6726 	request->wdev = wdev;
6727 	request->wiphy = &rdev->wiphy;
6728 	request->scan_start = jiffies;
6729 
6730 	rdev->scan_req = request;
6731 	err = rdev_scan(rdev, request);
6732 
6733 	if (!err) {
6734 		nl80211_send_scan_start(rdev, wdev);
6735 		if (wdev->netdev)
6736 			dev_hold(wdev->netdev);
6737 	} else {
6738  out_free:
6739 		rdev->scan_req = NULL;
6740 		kfree(request);
6741 	}
6742 
6743  unlock:
6744 	return err;
6745 }
6746 
6747 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6748 {
6749 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
6750 	struct wireless_dev *wdev = info->user_ptr[1];
6751 
6752 	if (!rdev->ops->abort_scan)
6753 		return -EOPNOTSUPP;
6754 
6755 	if (rdev->scan_msg)
6756 		return 0;
6757 
6758 	if (!rdev->scan_req)
6759 		return -ENOENT;
6760 
6761 	rdev_abort_scan(rdev, wdev);
6762 	return 0;
6763 }
6764 
6765 static int
6766 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6767 			       struct cfg80211_sched_scan_request *request,
6768 			       struct nlattr **attrs)
6769 {
6770 	int tmp, err, i = 0;
6771 	struct nlattr *attr;
6772 
6773 	if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6774 		u32 interval;
6775 
6776 		/*
6777 		 * If scan plans are not specified,
6778 		 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6779 		 * case one scan plan will be set with the specified scan
6780 		 * interval and infinite number of iterations.
6781 		 */
6782 		if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6783 			return -EINVAL;
6784 
6785 		interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6786 		if (!interval)
6787 			return -EINVAL;
6788 
6789 		request->scan_plans[0].interval =
6790 			DIV_ROUND_UP(interval, MSEC_PER_SEC);
6791 		if (!request->scan_plans[0].interval)
6792 			return -EINVAL;
6793 
6794 		if (request->scan_plans[0].interval >
6795 		    wiphy->max_sched_scan_plan_interval)
6796 			request->scan_plans[0].interval =
6797 				wiphy->max_sched_scan_plan_interval;
6798 
6799 		return 0;
6800 	}
6801 
6802 	nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6803 		struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6804 
6805 		if (WARN_ON(i >= n_plans))
6806 			return -EINVAL;
6807 
6808 		err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6809 				       attr, nl80211_plan_policy);
6810 		if (err)
6811 			return err;
6812 
6813 		if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6814 			return -EINVAL;
6815 
6816 		request->scan_plans[i].interval =
6817 			nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6818 		if (!request->scan_plans[i].interval ||
6819 		    request->scan_plans[i].interval >
6820 		    wiphy->max_sched_scan_plan_interval)
6821 			return -EINVAL;
6822 
6823 		if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6824 			request->scan_plans[i].iterations =
6825 				nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6826 			if (!request->scan_plans[i].iterations ||
6827 			    (request->scan_plans[i].iterations >
6828 			     wiphy->max_sched_scan_plan_iterations))
6829 				return -EINVAL;
6830 		} else if (i < n_plans - 1) {
6831 			/*
6832 			 * All scan plans but the last one must specify
6833 			 * a finite number of iterations
6834 			 */
6835 			return -EINVAL;
6836 		}
6837 
6838 		i++;
6839 	}
6840 
6841 	/*
6842 	 * The last scan plan must not specify the number of
6843 	 * iterations, it is supposed to run infinitely
6844 	 */
6845 	if (request->scan_plans[n_plans - 1].iterations)
6846 		return  -EINVAL;
6847 
6848 	return 0;
6849 }
6850 
6851 static struct cfg80211_sched_scan_request *
6852 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6853 			 struct nlattr **attrs)
6854 {
6855 	struct cfg80211_sched_scan_request *request;
6856 	struct nlattr *attr;
6857 	int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6858 	enum nl80211_band band;
6859 	size_t ie_len;
6860 	struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6861 	s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6862 
6863 	if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6864 		return ERR_PTR(-EINVAL);
6865 
6866 	if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6867 		n_channels = validate_scan_freqs(
6868 				attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6869 		if (!n_channels)
6870 			return ERR_PTR(-EINVAL);
6871 	} else {
6872 		n_channels = ieee80211_get_num_supported_channels(wiphy);
6873 	}
6874 
6875 	if (attrs[NL80211_ATTR_SCAN_SSIDS])
6876 		nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6877 				    tmp)
6878 			n_ssids++;
6879 
6880 	if (n_ssids > wiphy->max_sched_scan_ssids)
6881 		return ERR_PTR(-EINVAL);
6882 
6883 	/*
6884 	 * First, count the number of 'real' matchsets. Due to an issue with
6885 	 * the old implementation, matchsets containing only the RSSI attribute
6886 	 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6887 	 * RSSI for all matchsets, rather than their own matchset for reporting
6888 	 * all APs with a strong RSSI. This is needed to be compatible with
6889 	 * older userspace that treated a matchset with only the RSSI as the
6890 	 * global RSSI for all other matchsets - if there are other matchsets.
6891 	 */
6892 	if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6893 		nla_for_each_nested(attr,
6894 				    attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6895 				    tmp) {
6896 			struct nlattr *rssi;
6897 
6898 			err = nla_parse_nested(tb,
6899 					       NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6900 					       attr, nl80211_match_policy);
6901 			if (err)
6902 				return ERR_PTR(err);
6903 			/* add other standalone attributes here */
6904 			if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6905 				n_match_sets++;
6906 				continue;
6907 			}
6908 			rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6909 			if (rssi)
6910 				default_match_rssi = nla_get_s32(rssi);
6911 		}
6912 	}
6913 
6914 	/* However, if there's no other matchset, add the RSSI one */
6915 	if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6916 		n_match_sets = 1;
6917 
6918 	if (n_match_sets > wiphy->max_match_sets)
6919 		return ERR_PTR(-EINVAL);
6920 
6921 	if (attrs[NL80211_ATTR_IE])
6922 		ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6923 	else
6924 		ie_len = 0;
6925 
6926 	if (ie_len > wiphy->max_sched_scan_ie_len)
6927 		return ERR_PTR(-EINVAL);
6928 
6929 	if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6930 		/*
6931 		 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6932 		 * each scan plan already specifies its own interval
6933 		 */
6934 		if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6935 			return ERR_PTR(-EINVAL);
6936 
6937 		nla_for_each_nested(attr,
6938 				    attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6939 			n_plans++;
6940 	} else {
6941 		/*
6942 		 * The scan interval attribute is kept for backward
6943 		 * compatibility. If no scan plans are specified and sched scan
6944 		 * interval is specified, one scan plan will be set with this
6945 		 * scan interval and infinite number of iterations.
6946 		 */
6947 		if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6948 			return ERR_PTR(-EINVAL);
6949 
6950 		n_plans = 1;
6951 	}
6952 
6953 	if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6954 		return ERR_PTR(-EINVAL);
6955 
6956 	request = kzalloc(sizeof(*request)
6957 			+ sizeof(*request->ssids) * n_ssids
6958 			+ sizeof(*request->match_sets) * n_match_sets
6959 			+ sizeof(*request->scan_plans) * n_plans
6960 			+ sizeof(*request->channels) * n_channels
6961 			+ ie_len, GFP_KERNEL);
6962 	if (!request)
6963 		return ERR_PTR(-ENOMEM);
6964 
6965 	if (n_ssids)
6966 		request->ssids = (void *)&request->channels[n_channels];
6967 	request->n_ssids = n_ssids;
6968 	if (ie_len) {
6969 		if (n_ssids)
6970 			request->ie = (void *)(request->ssids + n_ssids);
6971 		else
6972 			request->ie = (void *)(request->channels + n_channels);
6973 	}
6974 
6975 	if (n_match_sets) {
6976 		if (request->ie)
6977 			request->match_sets = (void *)(request->ie + ie_len);
6978 		else if (n_ssids)
6979 			request->match_sets =
6980 				(void *)(request->ssids + n_ssids);
6981 		else
6982 			request->match_sets =
6983 				(void *)(request->channels + n_channels);
6984 	}
6985 	request->n_match_sets = n_match_sets;
6986 
6987 	if (n_match_sets)
6988 		request->scan_plans = (void *)(request->match_sets +
6989 					       n_match_sets);
6990 	else if (request->ie)
6991 		request->scan_plans = (void *)(request->ie + ie_len);
6992 	else if (n_ssids)
6993 		request->scan_plans = (void *)(request->ssids + n_ssids);
6994 	else
6995 		request->scan_plans = (void *)(request->channels + n_channels);
6996 
6997 	request->n_scan_plans = n_plans;
6998 
6999 	i = 0;
7000 	if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7001 		/* user specified, bail out if channel not found */
7002 		nla_for_each_nested(attr,
7003 				    attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7004 				    tmp) {
7005 			struct ieee80211_channel *chan;
7006 
7007 			chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7008 
7009 			if (!chan) {
7010 				err = -EINVAL;
7011 				goto out_free;
7012 			}
7013 
7014 			/* ignore disabled channels */
7015 			if (chan->flags & IEEE80211_CHAN_DISABLED)
7016 				continue;
7017 
7018 			request->channels[i] = chan;
7019 			i++;
7020 		}
7021 	} else {
7022 		/* all channels */
7023 		for (band = 0; band < NUM_NL80211_BANDS; band++) {
7024 			int j;
7025 
7026 			if (!wiphy->bands[band])
7027 				continue;
7028 			for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7029 				struct ieee80211_channel *chan;
7030 
7031 				chan = &wiphy->bands[band]->channels[j];
7032 
7033 				if (chan->flags & IEEE80211_CHAN_DISABLED)
7034 					continue;
7035 
7036 				request->channels[i] = chan;
7037 				i++;
7038 			}
7039 		}
7040 	}
7041 
7042 	if (!i) {
7043 		err = -EINVAL;
7044 		goto out_free;
7045 	}
7046 
7047 	request->n_channels = i;
7048 
7049 	i = 0;
7050 	if (n_ssids) {
7051 		nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7052 				    tmp) {
7053 			if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7054 				err = -EINVAL;
7055 				goto out_free;
7056 			}
7057 			request->ssids[i].ssid_len = nla_len(attr);
7058 			memcpy(request->ssids[i].ssid, nla_data(attr),
7059 			       nla_len(attr));
7060 			i++;
7061 		}
7062 	}
7063 
7064 	i = 0;
7065 	if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7066 		nla_for_each_nested(attr,
7067 				    attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7068 				    tmp) {
7069 			struct nlattr *ssid, *rssi;
7070 
7071 			err = nla_parse_nested(tb,
7072 					       NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7073 					       attr, nl80211_match_policy);
7074 			if (err)
7075 				goto out_free;
7076 			ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7077 			if (ssid) {
7078 				if (WARN_ON(i >= n_match_sets)) {
7079 					/* this indicates a programming error,
7080 					 * the loop above should have verified
7081 					 * things properly
7082 					 */
7083 					err = -EINVAL;
7084 					goto out_free;
7085 				}
7086 
7087 				if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7088 					err = -EINVAL;
7089 					goto out_free;
7090 				}
7091 				memcpy(request->match_sets[i].ssid.ssid,
7092 				       nla_data(ssid), nla_len(ssid));
7093 				request->match_sets[i].ssid.ssid_len =
7094 					nla_len(ssid);
7095 				/* special attribute - old implementation w/a */
7096 				request->match_sets[i].rssi_thold =
7097 					default_match_rssi;
7098 				rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7099 				if (rssi)
7100 					request->match_sets[i].rssi_thold =
7101 						nla_get_s32(rssi);
7102 			}
7103 			i++;
7104 		}
7105 
7106 		/* there was no other matchset, so the RSSI one is alone */
7107 		if (i == 0 && n_match_sets)
7108 			request->match_sets[0].rssi_thold = default_match_rssi;
7109 
7110 		request->min_rssi_thold = INT_MAX;
7111 		for (i = 0; i < n_match_sets; i++)
7112 			request->min_rssi_thold =
7113 				min(request->match_sets[i].rssi_thold,
7114 				    request->min_rssi_thold);
7115 	} else {
7116 		request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7117 	}
7118 
7119 	if (ie_len) {
7120 		request->ie_len = ie_len;
7121 		memcpy((void *)request->ie,
7122 		       nla_data(attrs[NL80211_ATTR_IE]),
7123 		       request->ie_len);
7124 	}
7125 
7126 	if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7127 		request->flags = nla_get_u32(
7128 			attrs[NL80211_ATTR_SCAN_FLAGS]);
7129 		if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7130 		    !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7131 			err = -EOPNOTSUPP;
7132 			goto out_free;
7133 		}
7134 
7135 		if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7136 			u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7137 
7138 			if (!wdev) /* must be net-detect */
7139 				flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7140 
7141 			if (!(wiphy->features & flg)) {
7142 				err = -EOPNOTSUPP;
7143 				goto out_free;
7144 			}
7145 
7146 			if (wdev && wdev->current_bss) {
7147 				err = -EOPNOTSUPP;
7148 				goto out_free;
7149 			}
7150 
7151 			err = nl80211_parse_random_mac(attrs, request->mac_addr,
7152 						       request->mac_addr_mask);
7153 			if (err)
7154 				goto out_free;
7155 		}
7156 	}
7157 
7158 	if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7159 		request->delay =
7160 			nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7161 
7162 	err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7163 	if (err)
7164 		goto out_free;
7165 
7166 	request->scan_start = jiffies;
7167 
7168 	return request;
7169 
7170 out_free:
7171 	kfree(request);
7172 	return ERR_PTR(err);
7173 }
7174 
7175 static int nl80211_start_sched_scan(struct sk_buff *skb,
7176 				    struct genl_info *info)
7177 {
7178 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
7179 	struct net_device *dev = info->user_ptr[1];
7180 	struct wireless_dev *wdev = dev->ieee80211_ptr;
7181 	struct cfg80211_sched_scan_request *sched_scan_req;
7182 	int err;
7183 
7184 	if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7185 	    !rdev->ops->sched_scan_start)
7186 		return -EOPNOTSUPP;
7187 
7188 	if (rdev->sched_scan_req)
7189 		return -EINPROGRESS;
7190 
7191 	sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7192 						  info->attrs);
7193 
7194 	err = PTR_ERR_OR_ZERO(sched_scan_req);
7195 	if (err)
7196 		goto out_err;
7197 
7198 	err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7199 	if (err)
7200 		goto out_free;
7201 
7202 	sched_scan_req->dev = dev;
7203 	sched_scan_req->wiphy = &rdev->wiphy;
7204 
7205 	if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7206 		sched_scan_req->owner_nlportid = info->snd_portid;
7207 
7208 	rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
7209 
7210 	nl80211_send_sched_scan(rdev, dev,
7211 				NL80211_CMD_START_SCHED_SCAN);
7212 	return 0;
7213 
7214 out_free:
7215 	kfree(sched_scan_req);
7216 out_err:
7217 	return err;
7218 }
7219 
7220 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7221 				   struct genl_info *info)
7222 {
7223 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
7224 
7225 	if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7226 	    !rdev->ops->sched_scan_stop)
7227 		return -EOPNOTSUPP;
7228 
7229 	return __cfg80211_stop_sched_scan(rdev, false);
7230 }
7231 
7232 static int nl80211_start_radar_detection(struct sk_buff *skb,
7233 					 struct genl_info *info)
7234 {
7235 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
7236 	struct net_device *dev = info->user_ptr[1];
7237 	struct wireless_dev *wdev = dev->ieee80211_ptr;
7238 	struct cfg80211_chan_def chandef;
7239 	enum nl80211_dfs_regions dfs_region;
7240 	unsigned int cac_time_ms;
7241 	int err;
7242 
7243 	dfs_region = reg_get_dfs_region(wdev->wiphy);
7244 	if (dfs_region == NL80211_DFS_UNSET)
7245 		return -EINVAL;
7246 
7247 	err = nl80211_parse_chandef(rdev, info, &chandef);
7248 	if (err)
7249 		return err;
7250 
7251 	if (netif_carrier_ok(dev))
7252 		return -EBUSY;
7253 
7254 	if (wdev->cac_started)
7255 		return -EBUSY;
7256 
7257 	err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7258 					    wdev->iftype);
7259 	if (err < 0)
7260 		return err;
7261 
7262 	if (err == 0)
7263 		return -EINVAL;
7264 
7265 	if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7266 		return -EINVAL;
7267 
7268 	if (!rdev->ops->start_radar_detection)
7269 		return -EOPNOTSUPP;
7270 
7271 	cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7272 	if (WARN_ON(!cac_time_ms))
7273 		cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7274 
7275 	err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7276 	if (!err) {
7277 		wdev->chandef = chandef;
7278 		wdev->cac_started = true;
7279 		wdev->cac_start_time = jiffies;
7280 		wdev->cac_time_ms = cac_time_ms;
7281 	}
7282 	return err;
7283 }
7284 
7285 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7286 {
7287 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
7288 	struct net_device *dev = info->user_ptr[1];
7289 	struct wireless_dev *wdev = dev->ieee80211_ptr;
7290 	struct cfg80211_csa_settings params;
7291 	/* csa_attrs is defined static to avoid waste of stack size - this
7292 	 * function is called under RTNL lock, so this should not be a problem.
7293 	 */
7294 	static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7295 	int err;
7296 	bool need_new_beacon = false;
7297 	int len, i;
7298 	u32 cs_count;
7299 
7300 	if (!rdev->ops->channel_switch ||
7301 	    !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7302 		return -EOPNOTSUPP;
7303 
7304 	switch (dev->ieee80211_ptr->iftype) {
7305 	case NL80211_IFTYPE_AP:
7306 	case NL80211_IFTYPE_P2P_GO:
7307 		need_new_beacon = true;
7308 
7309 		/* useless if AP is not running */
7310 		if (!wdev->beacon_interval)
7311 			return -ENOTCONN;
7312 		break;
7313 	case NL80211_IFTYPE_ADHOC:
7314 		if (!wdev->ssid_len)
7315 			return -ENOTCONN;
7316 		break;
7317 	case NL80211_IFTYPE_MESH_POINT:
7318 		if (!wdev->mesh_id_len)
7319 			return -ENOTCONN;
7320 		break;
7321 	default:
7322 		return -EOPNOTSUPP;
7323 	}
7324 
7325 	memset(&params, 0, sizeof(params));
7326 
7327 	if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7328 	    !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7329 		return -EINVAL;
7330 
7331 	/* only important for AP, IBSS and mesh create IEs internally */
7332 	if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7333 		return -EINVAL;
7334 
7335 	/* Even though the attribute is u32, the specification says
7336 	 * u8, so let's make sure we don't overflow.
7337 	 */
7338 	cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7339 	if (cs_count > 255)
7340 		return -EINVAL;
7341 
7342 	params.count = cs_count;
7343 
7344 	if (!need_new_beacon)
7345 		goto skip_beacons;
7346 
7347 	err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7348 	if (err)
7349 		return err;
7350 
7351 	err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7352 			       info->attrs[NL80211_ATTR_CSA_IES],
7353 			       nl80211_policy);
7354 	if (err)
7355 		return err;
7356 
7357 	err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7358 	if (err)
7359 		return err;
7360 
7361 	if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7362 		return -EINVAL;
7363 
7364 	len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7365 	if (!len || (len % sizeof(u16)))
7366 		return -EINVAL;
7367 
7368 	params.n_counter_offsets_beacon = len / sizeof(u16);
7369 	if (rdev->wiphy.max_num_csa_counters &&
7370 	    (params.n_counter_offsets_beacon >
7371 	     rdev->wiphy.max_num_csa_counters))
7372 		return -EINVAL;
7373 
7374 	params.counter_offsets_beacon =
7375 		nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7376 
7377 	/* sanity checks - counters should fit and be the same */
7378 	for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7379 		u16 offset = params.counter_offsets_beacon[i];
7380 
7381 		if (offset >= params.beacon_csa.tail_len)
7382 			return -EINVAL;
7383 
7384 		if (params.beacon_csa.tail[offset] != params.count)
7385 			return -EINVAL;
7386 	}
7387 
7388 	if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7389 		len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7390 		if (!len || (len % sizeof(u16)))
7391 			return -EINVAL;
7392 
7393 		params.n_counter_offsets_presp = len / sizeof(u16);
7394 		if (rdev->wiphy.max_num_csa_counters &&
7395 		    (params.n_counter_offsets_presp >
7396 		     rdev->wiphy.max_num_csa_counters))
7397 			return -EINVAL;
7398 
7399 		params.counter_offsets_presp =
7400 			nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7401 
7402 		/* sanity checks - counters should fit and be the same */
7403 		for (i = 0; i < params.n_counter_offsets_presp; i++) {
7404 			u16 offset = params.counter_offsets_presp[i];
7405 
7406 			if (offset >= params.beacon_csa.probe_resp_len)
7407 				return -EINVAL;
7408 
7409 			if (params.beacon_csa.probe_resp[offset] !=
7410 			    params.count)
7411 				return -EINVAL;
7412 		}
7413 	}
7414 
7415 skip_beacons:
7416 	err = nl80211_parse_chandef(rdev, info, &params.chandef);
7417 	if (err)
7418 		return err;
7419 
7420 	if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7421 					   wdev->iftype))
7422 		return -EINVAL;
7423 
7424 	err = cfg80211_chandef_dfs_required(wdev->wiphy,
7425 					    &params.chandef,
7426 					    wdev->iftype);
7427 	if (err < 0)
7428 		return err;
7429 
7430 	if (err > 0)
7431 		params.radar_required = true;
7432 
7433 	if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7434 		params.block_tx = true;
7435 
7436 	wdev_lock(wdev);
7437 	err = rdev_channel_switch(rdev, dev, &params);
7438 	wdev_unlock(wdev);
7439 
7440 	return err;
7441 }
7442 
7443 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7444 			    u32 seq, int flags,
7445 			    struct cfg80211_registered_device *rdev,
7446 			    struct wireless_dev *wdev,
7447 			    struct cfg80211_internal_bss *intbss)
7448 {
7449 	struct cfg80211_bss *res = &intbss->pub;
7450 	const struct cfg80211_bss_ies *ies;
7451 	void *hdr;
7452 	struct nlattr *bss;
7453 
7454 	ASSERT_WDEV_LOCK(wdev);
7455 
7456 	hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7457 			     NL80211_CMD_NEW_SCAN_RESULTS);
7458 	if (!hdr)
7459 		return -1;
7460 
7461 	genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7462 
7463 	if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7464 		goto nla_put_failure;
7465 	if (wdev->netdev &&
7466 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7467 		goto nla_put_failure;
7468 	if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7469 			      NL80211_ATTR_PAD))
7470 		goto nla_put_failure;
7471 
7472 	bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7473 	if (!bss)
7474 		goto nla_put_failure;
7475 	if ((!is_zero_ether_addr(res->bssid) &&
7476 	     nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7477 		goto nla_put_failure;
7478 
7479 	rcu_read_lock();
7480 	/* indicate whether we have probe response data or not */
7481 	if (rcu_access_pointer(res->proberesp_ies) &&
7482 	    nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7483 		goto fail_unlock_rcu;
7484 
7485 	/* this pointer prefers to be pointed to probe response data
7486 	 * but is always valid
7487 	 */
7488 	ies = rcu_dereference(res->ies);
7489 	if (ies) {
7490 		if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7491 				      NL80211_BSS_PAD))
7492 			goto fail_unlock_rcu;
7493 		if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7494 					ies->len, ies->data))
7495 			goto fail_unlock_rcu;
7496 	}
7497 
7498 	/* and this pointer is always (unless driver didn't know) beacon data */
7499 	ies = rcu_dereference(res->beacon_ies);
7500 	if (ies && ies->from_beacon) {
7501 		if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7502 				      NL80211_BSS_PAD))
7503 			goto fail_unlock_rcu;
7504 		if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7505 					ies->len, ies->data))
7506 			goto fail_unlock_rcu;
7507 	}
7508 	rcu_read_unlock();
7509 
7510 	if (res->beacon_interval &&
7511 	    nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7512 		goto nla_put_failure;
7513 	if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7514 	    nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7515 	    nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7516 	    nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7517 			jiffies_to_msecs(jiffies - intbss->ts)))
7518 		goto nla_put_failure;
7519 
7520 	if (intbss->parent_tsf &&
7521 	    (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7522 			       intbss->parent_tsf, NL80211_BSS_PAD) ||
7523 	     nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7524 		     intbss->parent_bssid)))
7525 		goto nla_put_failure;
7526 
7527 	if (intbss->ts_boottime &&
7528 	    nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7529 			      intbss->ts_boottime, NL80211_BSS_PAD))
7530 		goto nla_put_failure;
7531 
7532 	switch (rdev->wiphy.signal_type) {
7533 	case CFG80211_SIGNAL_TYPE_MBM:
7534 		if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7535 			goto nla_put_failure;
7536 		break;
7537 	case CFG80211_SIGNAL_TYPE_UNSPEC:
7538 		if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7539 			goto nla_put_failure;
7540 		break;
7541 	default:
7542 		break;
7543 	}
7544 
7545 	switch (wdev->iftype) {
7546 	case NL80211_IFTYPE_P2P_CLIENT:
7547 	case NL80211_IFTYPE_STATION:
7548 		if (intbss == wdev->current_bss &&
7549 		    nla_put_u32(msg, NL80211_BSS_STATUS,
7550 				NL80211_BSS_STATUS_ASSOCIATED))
7551 			goto nla_put_failure;
7552 		break;
7553 	case NL80211_IFTYPE_ADHOC:
7554 		if (intbss == wdev->current_bss &&
7555 		    nla_put_u32(msg, NL80211_BSS_STATUS,
7556 				NL80211_BSS_STATUS_IBSS_JOINED))
7557 			goto nla_put_failure;
7558 		break;
7559 	default:
7560 		break;
7561 	}
7562 
7563 	nla_nest_end(msg, bss);
7564 
7565 	genlmsg_end(msg, hdr);
7566 	return 0;
7567 
7568  fail_unlock_rcu:
7569 	rcu_read_unlock();
7570  nla_put_failure:
7571 	genlmsg_cancel(msg, hdr);
7572 	return -EMSGSIZE;
7573 }
7574 
7575 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7576 {
7577 	struct cfg80211_registered_device *rdev;
7578 	struct cfg80211_internal_bss *scan;
7579 	struct wireless_dev *wdev;
7580 	int start = cb->args[2], idx = 0;
7581 	int err;
7582 
7583 	err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7584 	if (err)
7585 		return err;
7586 
7587 	wdev_lock(wdev);
7588 	spin_lock_bh(&rdev->bss_lock);
7589 	cfg80211_bss_expire(rdev);
7590 
7591 	cb->seq = rdev->bss_generation;
7592 
7593 	list_for_each_entry(scan, &rdev->bss_list, list) {
7594 		if (++idx <= start)
7595 			continue;
7596 		if (nl80211_send_bss(skb, cb,
7597 				cb->nlh->nlmsg_seq, NLM_F_MULTI,
7598 				rdev, wdev, scan) < 0) {
7599 			idx--;
7600 			break;
7601 		}
7602 	}
7603 
7604 	spin_unlock_bh(&rdev->bss_lock);
7605 	wdev_unlock(wdev);
7606 
7607 	cb->args[2] = idx;
7608 	nl80211_finish_wdev_dump(rdev);
7609 
7610 	return skb->len;
7611 }
7612 
7613 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7614 			       int flags, struct net_device *dev,
7615 			       bool allow_radio_stats,
7616 			       struct survey_info *survey)
7617 {
7618 	void *hdr;
7619 	struct nlattr *infoattr;
7620 
7621 	/* skip radio stats if userspace didn't request them */
7622 	if (!survey->channel && !allow_radio_stats)
7623 		return 0;
7624 
7625 	hdr = nl80211hdr_put(msg, portid, seq, flags,
7626 			     NL80211_CMD_NEW_SURVEY_RESULTS);
7627 	if (!hdr)
7628 		return -ENOMEM;
7629 
7630 	if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7631 		goto nla_put_failure;
7632 
7633 	infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7634 	if (!infoattr)
7635 		goto nla_put_failure;
7636 
7637 	if (survey->channel &&
7638 	    nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7639 			survey->channel->center_freq))
7640 		goto nla_put_failure;
7641 
7642 	if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7643 	    nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7644 		goto nla_put_failure;
7645 	if ((survey->filled & SURVEY_INFO_IN_USE) &&
7646 	    nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7647 		goto nla_put_failure;
7648 	if ((survey->filled & SURVEY_INFO_TIME) &&
7649 	    nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7650 			survey->time, NL80211_SURVEY_INFO_PAD))
7651 		goto nla_put_failure;
7652 	if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7653 	    nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7654 			      survey->time_busy, NL80211_SURVEY_INFO_PAD))
7655 		goto nla_put_failure;
7656 	if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7657 	    nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7658 			      survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7659 		goto nla_put_failure;
7660 	if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7661 	    nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7662 			      survey->time_rx, NL80211_SURVEY_INFO_PAD))
7663 		goto nla_put_failure;
7664 	if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7665 	    nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7666 			      survey->time_tx, NL80211_SURVEY_INFO_PAD))
7667 		goto nla_put_failure;
7668 	if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7669 	    nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7670 			      survey->time_scan, NL80211_SURVEY_INFO_PAD))
7671 		goto nla_put_failure;
7672 
7673 	nla_nest_end(msg, infoattr);
7674 
7675 	genlmsg_end(msg, hdr);
7676 	return 0;
7677 
7678  nla_put_failure:
7679 	genlmsg_cancel(msg, hdr);
7680 	return -EMSGSIZE;
7681 }
7682 
7683 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7684 {
7685 	struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7686 	struct survey_info survey;
7687 	struct cfg80211_registered_device *rdev;
7688 	struct wireless_dev *wdev;
7689 	int survey_idx = cb->args[2];
7690 	int res;
7691 	bool radio_stats;
7692 
7693 	res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7694 	if (res)
7695 		return res;
7696 
7697 	/* prepare_wdev_dump parsed the attributes */
7698 	radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7699 
7700 	if (!wdev->netdev) {
7701 		res = -EINVAL;
7702 		goto out_err;
7703 	}
7704 
7705 	if (!rdev->ops->dump_survey) {
7706 		res = -EOPNOTSUPP;
7707 		goto out_err;
7708 	}
7709 
7710 	while (1) {
7711 		res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7712 		if (res == -ENOENT)
7713 			break;
7714 		if (res)
7715 			goto out_err;
7716 
7717 		/* don't send disabled channels, but do send non-channel data */
7718 		if (survey.channel &&
7719 		    survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7720 			survey_idx++;
7721 			continue;
7722 		}
7723 
7724 		if (nl80211_send_survey(skb,
7725 				NETLINK_CB(cb->skb).portid,
7726 				cb->nlh->nlmsg_seq, NLM_F_MULTI,
7727 				wdev->netdev, radio_stats, &survey) < 0)
7728 			goto out;
7729 		survey_idx++;
7730 	}
7731 
7732  out:
7733 	cb->args[2] = survey_idx;
7734 	res = skb->len;
7735  out_err:
7736 	nl80211_finish_wdev_dump(rdev);
7737 	return res;
7738 }
7739 
7740 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7741 {
7742 	return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7743 				  NL80211_WPA_VERSION_2));
7744 }
7745 
7746 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7747 {
7748 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
7749 	struct net_device *dev = info->user_ptr[1];
7750 	struct ieee80211_channel *chan;
7751 	const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7752 	int err, ssid_len, ie_len = 0, auth_data_len = 0;
7753 	enum nl80211_auth_type auth_type;
7754 	struct key_parse key;
7755 	bool local_state_change;
7756 
7757 	if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7758 		return -EINVAL;
7759 
7760 	if (!info->attrs[NL80211_ATTR_MAC])
7761 		return -EINVAL;
7762 
7763 	if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7764 		return -EINVAL;
7765 
7766 	if (!info->attrs[NL80211_ATTR_SSID])
7767 		return -EINVAL;
7768 
7769 	if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7770 		return -EINVAL;
7771 
7772 	err = nl80211_parse_key(info, &key);
7773 	if (err)
7774 		return err;
7775 
7776 	if (key.idx >= 0) {
7777 		if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7778 			return -EINVAL;
7779 		if (!key.p.key || !key.p.key_len)
7780 			return -EINVAL;
7781 		if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7782 		     key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7783 		    (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7784 		     key.p.key_len != WLAN_KEY_LEN_WEP104))
7785 			return -EINVAL;
7786 		if (key.idx > 3)
7787 			return -EINVAL;
7788 	} else {
7789 		key.p.key_len = 0;
7790 		key.p.key = NULL;
7791 	}
7792 
7793 	if (key.idx >= 0) {
7794 		int i;
7795 		bool ok = false;
7796 
7797 		for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7798 			if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7799 				ok = true;
7800 				break;
7801 			}
7802 		}
7803 		if (!ok)
7804 			return -EINVAL;
7805 	}
7806 
7807 	if (!rdev->ops->auth)
7808 		return -EOPNOTSUPP;
7809 
7810 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7811 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7812 		return -EOPNOTSUPP;
7813 
7814 	bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7815 	chan = nl80211_get_valid_chan(&rdev->wiphy,
7816 				      info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7817 	if (!chan)
7818 		return -EINVAL;
7819 
7820 	ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7821 	ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7822 
7823 	if (info->attrs[NL80211_ATTR_IE]) {
7824 		ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7825 		ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7826 	}
7827 
7828 	auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7829 	if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7830 		return -EINVAL;
7831 
7832 	if ((auth_type == NL80211_AUTHTYPE_SAE ||
7833 	     auth_type == NL80211_AUTHTYPE_FILS_SK ||
7834 	     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
7835 	     auth_type == NL80211_AUTHTYPE_FILS_PK) &&
7836 	    !info->attrs[NL80211_ATTR_AUTH_DATA])
7837 		return -EINVAL;
7838 
7839 	if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
7840 		if (auth_type != NL80211_AUTHTYPE_SAE &&
7841 		    auth_type != NL80211_AUTHTYPE_FILS_SK &&
7842 		    auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
7843 		    auth_type != NL80211_AUTHTYPE_FILS_PK)
7844 			return -EINVAL;
7845 		auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
7846 		auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
7847 		/* need to include at least Auth Transaction and Status Code */
7848 		if (auth_data_len < 4)
7849 			return -EINVAL;
7850 	}
7851 
7852 	local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7853 
7854 	/*
7855 	 * Since we no longer track auth state, ignore
7856 	 * requests to only change local state.
7857 	 */
7858 	if (local_state_change)
7859 		return 0;
7860 
7861 	wdev_lock(dev->ieee80211_ptr);
7862 	err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7863 				 ssid, ssid_len, ie, ie_len,
7864 				 key.p.key, key.p.key_len, key.idx,
7865 				 auth_data, auth_data_len);
7866 	wdev_unlock(dev->ieee80211_ptr);
7867 	return err;
7868 }
7869 
7870 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7871 				   struct genl_info *info,
7872 				   struct cfg80211_crypto_settings *settings,
7873 				   int cipher_limit)
7874 {
7875 	memset(settings, 0, sizeof(*settings));
7876 
7877 	settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7878 
7879 	if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7880 		u16 proto;
7881 
7882 		proto = nla_get_u16(
7883 			info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7884 		settings->control_port_ethertype = cpu_to_be16(proto);
7885 		if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7886 		    proto != ETH_P_PAE)
7887 			return -EINVAL;
7888 		if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7889 			settings->control_port_no_encrypt = true;
7890 	} else
7891 		settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7892 
7893 	if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7894 		void *data;
7895 		int len, i;
7896 
7897 		data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7898 		len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7899 		settings->n_ciphers_pairwise = len / sizeof(u32);
7900 
7901 		if (len % sizeof(u32))
7902 			return -EINVAL;
7903 
7904 		if (settings->n_ciphers_pairwise > cipher_limit)
7905 			return -EINVAL;
7906 
7907 		memcpy(settings->ciphers_pairwise, data, len);
7908 
7909 		for (i = 0; i < settings->n_ciphers_pairwise; i++)
7910 			if (!cfg80211_supported_cipher_suite(
7911 					&rdev->wiphy,
7912 					settings->ciphers_pairwise[i]))
7913 				return -EINVAL;
7914 	}
7915 
7916 	if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7917 		settings->cipher_group =
7918 			nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7919 		if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7920 						     settings->cipher_group))
7921 			return -EINVAL;
7922 	}
7923 
7924 	if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7925 		settings->wpa_versions =
7926 			nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7927 		if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7928 			return -EINVAL;
7929 	}
7930 
7931 	if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7932 		void *data;
7933 		int len;
7934 
7935 		data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7936 		len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7937 		settings->n_akm_suites = len / sizeof(u32);
7938 
7939 		if (len % sizeof(u32))
7940 			return -EINVAL;
7941 
7942 		if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7943 			return -EINVAL;
7944 
7945 		memcpy(settings->akm_suites, data, len);
7946 	}
7947 
7948 	return 0;
7949 }
7950 
7951 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7952 {
7953 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
7954 	struct net_device *dev = info->user_ptr[1];
7955 	struct ieee80211_channel *chan;
7956 	struct cfg80211_assoc_request req = {};
7957 	const u8 *bssid, *ssid;
7958 	int err, ssid_len = 0;
7959 
7960 	if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7961 		return -EINVAL;
7962 
7963 	if (!info->attrs[NL80211_ATTR_MAC] ||
7964 	    !info->attrs[NL80211_ATTR_SSID] ||
7965 	    !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7966 		return -EINVAL;
7967 
7968 	if (!rdev->ops->assoc)
7969 		return -EOPNOTSUPP;
7970 
7971 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7972 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7973 		return -EOPNOTSUPP;
7974 
7975 	bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7976 
7977 	chan = nl80211_get_valid_chan(&rdev->wiphy,
7978 				      info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7979 	if (!chan)
7980 		return -EINVAL;
7981 
7982 	ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7983 	ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7984 
7985 	if (info->attrs[NL80211_ATTR_IE]) {
7986 		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7987 		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7988 	}
7989 
7990 	if (info->attrs[NL80211_ATTR_USE_MFP]) {
7991 		enum nl80211_mfp mfp =
7992 			nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7993 		if (mfp == NL80211_MFP_REQUIRED)
7994 			req.use_mfp = true;
7995 		else if (mfp != NL80211_MFP_NO)
7996 			return -EINVAL;
7997 	}
7998 
7999 	if (info->attrs[NL80211_ATTR_PREV_BSSID])
8000 		req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8001 
8002 	if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8003 		req.flags |= ASSOC_REQ_DISABLE_HT;
8004 
8005 	if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8006 		memcpy(&req.ht_capa_mask,
8007 		       nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8008 		       sizeof(req.ht_capa_mask));
8009 
8010 	if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8011 		if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8012 			return -EINVAL;
8013 		memcpy(&req.ht_capa,
8014 		       nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8015 		       sizeof(req.ht_capa));
8016 	}
8017 
8018 	if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8019 		req.flags |= ASSOC_REQ_DISABLE_VHT;
8020 
8021 	if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8022 		memcpy(&req.vht_capa_mask,
8023 		       nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8024 		       sizeof(req.vht_capa_mask));
8025 
8026 	if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8027 		if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8028 			return -EINVAL;
8029 		memcpy(&req.vht_capa,
8030 		       nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8031 		       sizeof(req.vht_capa));
8032 	}
8033 
8034 	if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8035 		if (!((rdev->wiphy.features &
8036 			NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8037 		       (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8038 		    !wiphy_ext_feature_isset(&rdev->wiphy,
8039 					     NL80211_EXT_FEATURE_RRM))
8040 			return -EINVAL;
8041 		req.flags |= ASSOC_REQ_USE_RRM;
8042 	}
8043 
8044 	if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8045 		req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8046 		req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8047 		if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8048 			return -EINVAL;
8049 		req.fils_nonces =
8050 			nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8051 	}
8052 
8053 	err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8054 	if (!err) {
8055 		wdev_lock(dev->ieee80211_ptr);
8056 		err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8057 					  ssid, ssid_len, &req);
8058 		wdev_unlock(dev->ieee80211_ptr);
8059 	}
8060 
8061 	return err;
8062 }
8063 
8064 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8065 {
8066 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8067 	struct net_device *dev = info->user_ptr[1];
8068 	const u8 *ie = NULL, *bssid;
8069 	int ie_len = 0, err;
8070 	u16 reason_code;
8071 	bool local_state_change;
8072 
8073 	if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8074 		return -EINVAL;
8075 
8076 	if (!info->attrs[NL80211_ATTR_MAC])
8077 		return -EINVAL;
8078 
8079 	if (!info->attrs[NL80211_ATTR_REASON_CODE])
8080 		return -EINVAL;
8081 
8082 	if (!rdev->ops->deauth)
8083 		return -EOPNOTSUPP;
8084 
8085 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8086 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8087 		return -EOPNOTSUPP;
8088 
8089 	bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8090 
8091 	reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8092 	if (reason_code == 0) {
8093 		/* Reason Code 0 is reserved */
8094 		return -EINVAL;
8095 	}
8096 
8097 	if (info->attrs[NL80211_ATTR_IE]) {
8098 		ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8099 		ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8100 	}
8101 
8102 	local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8103 
8104 	wdev_lock(dev->ieee80211_ptr);
8105 	err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8106 				   local_state_change);
8107 	wdev_unlock(dev->ieee80211_ptr);
8108 	return err;
8109 }
8110 
8111 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8112 {
8113 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8114 	struct net_device *dev = info->user_ptr[1];
8115 	const u8 *ie = NULL, *bssid;
8116 	int ie_len = 0, err;
8117 	u16 reason_code;
8118 	bool local_state_change;
8119 
8120 	if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8121 		return -EINVAL;
8122 
8123 	if (!info->attrs[NL80211_ATTR_MAC])
8124 		return -EINVAL;
8125 
8126 	if (!info->attrs[NL80211_ATTR_REASON_CODE])
8127 		return -EINVAL;
8128 
8129 	if (!rdev->ops->disassoc)
8130 		return -EOPNOTSUPP;
8131 
8132 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8133 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8134 		return -EOPNOTSUPP;
8135 
8136 	bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8137 
8138 	reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8139 	if (reason_code == 0) {
8140 		/* Reason Code 0 is reserved */
8141 		return -EINVAL;
8142 	}
8143 
8144 	if (info->attrs[NL80211_ATTR_IE]) {
8145 		ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8146 		ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8147 	}
8148 
8149 	local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8150 
8151 	wdev_lock(dev->ieee80211_ptr);
8152 	err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8153 				     local_state_change);
8154 	wdev_unlock(dev->ieee80211_ptr);
8155 	return err;
8156 }
8157 
8158 static bool
8159 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8160 			 int mcast_rate[NUM_NL80211_BANDS],
8161 			 int rateval)
8162 {
8163 	struct wiphy *wiphy = &rdev->wiphy;
8164 	bool found = false;
8165 	int band, i;
8166 
8167 	for (band = 0; band < NUM_NL80211_BANDS; band++) {
8168 		struct ieee80211_supported_band *sband;
8169 
8170 		sband = wiphy->bands[band];
8171 		if (!sband)
8172 			continue;
8173 
8174 		for (i = 0; i < sband->n_bitrates; i++) {
8175 			if (sband->bitrates[i].bitrate == rateval) {
8176 				mcast_rate[band] = i + 1;
8177 				found = true;
8178 				break;
8179 			}
8180 		}
8181 	}
8182 
8183 	return found;
8184 }
8185 
8186 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8187 {
8188 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8189 	struct net_device *dev = info->user_ptr[1];
8190 	struct cfg80211_ibss_params ibss;
8191 	struct wiphy *wiphy;
8192 	struct cfg80211_cached_keys *connkeys = NULL;
8193 	int err;
8194 
8195 	memset(&ibss, 0, sizeof(ibss));
8196 
8197 	if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8198 		return -EINVAL;
8199 
8200 	if (!info->attrs[NL80211_ATTR_SSID] ||
8201 	    !nla_len(info->attrs[NL80211_ATTR_SSID]))
8202 		return -EINVAL;
8203 
8204 	ibss.beacon_interval = 100;
8205 
8206 	if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8207 		ibss.beacon_interval =
8208 			nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8209 
8210 	err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8211 					   ibss.beacon_interval);
8212 	if (err)
8213 		return err;
8214 
8215 	if (!rdev->ops->join_ibss)
8216 		return -EOPNOTSUPP;
8217 
8218 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8219 		return -EOPNOTSUPP;
8220 
8221 	wiphy = &rdev->wiphy;
8222 
8223 	if (info->attrs[NL80211_ATTR_MAC]) {
8224 		ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8225 
8226 		if (!is_valid_ether_addr(ibss.bssid))
8227 			return -EINVAL;
8228 	}
8229 	ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8230 	ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8231 
8232 	if (info->attrs[NL80211_ATTR_IE]) {
8233 		ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8234 		ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8235 	}
8236 
8237 	err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8238 	if (err)
8239 		return err;
8240 
8241 	if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8242 				     NL80211_IFTYPE_ADHOC))
8243 		return -EINVAL;
8244 
8245 	switch (ibss.chandef.width) {
8246 	case NL80211_CHAN_WIDTH_5:
8247 	case NL80211_CHAN_WIDTH_10:
8248 	case NL80211_CHAN_WIDTH_20_NOHT:
8249 		break;
8250 	case NL80211_CHAN_WIDTH_20:
8251 	case NL80211_CHAN_WIDTH_40:
8252 		if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8253 			return -EINVAL;
8254 		break;
8255 	case NL80211_CHAN_WIDTH_80:
8256 	case NL80211_CHAN_WIDTH_80P80:
8257 	case NL80211_CHAN_WIDTH_160:
8258 		if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8259 			return -EINVAL;
8260 		if (!wiphy_ext_feature_isset(&rdev->wiphy,
8261 					     NL80211_EXT_FEATURE_VHT_IBSS))
8262 			return -EINVAL;
8263 		break;
8264 	default:
8265 		return -EINVAL;
8266 	}
8267 
8268 	ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8269 	ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8270 
8271 	if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8272 		u8 *rates =
8273 			nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8274 		int n_rates =
8275 			nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8276 		struct ieee80211_supported_band *sband =
8277 			wiphy->bands[ibss.chandef.chan->band];
8278 
8279 		err = ieee80211_get_ratemask(sband, rates, n_rates,
8280 					     &ibss.basic_rates);
8281 		if (err)
8282 			return err;
8283 	}
8284 
8285 	if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8286 		memcpy(&ibss.ht_capa_mask,
8287 		       nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8288 		       sizeof(ibss.ht_capa_mask));
8289 
8290 	if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8291 		if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8292 			return -EINVAL;
8293 		memcpy(&ibss.ht_capa,
8294 		       nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8295 		       sizeof(ibss.ht_capa));
8296 	}
8297 
8298 	if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8299 	    !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8300 			nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8301 		return -EINVAL;
8302 
8303 	if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8304 		bool no_ht = false;
8305 
8306 		connkeys = nl80211_parse_connkeys(rdev,
8307 					  info->attrs[NL80211_ATTR_KEYS],
8308 					  &no_ht);
8309 		if (IS_ERR(connkeys))
8310 			return PTR_ERR(connkeys);
8311 
8312 		if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8313 		    no_ht) {
8314 			kzfree(connkeys);
8315 			return -EINVAL;
8316 		}
8317 	}
8318 
8319 	ibss.control_port =
8320 		nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8321 
8322 	ibss.userspace_handles_dfs =
8323 		nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8324 
8325 	err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8326 	if (err)
8327 		kzfree(connkeys);
8328 	return err;
8329 }
8330 
8331 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8332 {
8333 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8334 	struct net_device *dev = info->user_ptr[1];
8335 
8336 	if (!rdev->ops->leave_ibss)
8337 		return -EOPNOTSUPP;
8338 
8339 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8340 		return -EOPNOTSUPP;
8341 
8342 	return cfg80211_leave_ibss(rdev, dev, false);
8343 }
8344 
8345 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8346 {
8347 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8348 	struct net_device *dev = info->user_ptr[1];
8349 	int mcast_rate[NUM_NL80211_BANDS];
8350 	u32 nla_rate;
8351 	int err;
8352 
8353 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8354 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8355 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8356 		return -EOPNOTSUPP;
8357 
8358 	if (!rdev->ops->set_mcast_rate)
8359 		return -EOPNOTSUPP;
8360 
8361 	memset(mcast_rate, 0, sizeof(mcast_rate));
8362 
8363 	if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8364 		return -EINVAL;
8365 
8366 	nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8367 	if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8368 		return -EINVAL;
8369 
8370 	err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8371 
8372 	return err;
8373 }
8374 
8375 static struct sk_buff *
8376 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8377 			    struct wireless_dev *wdev, int approxlen,
8378 			    u32 portid, u32 seq, enum nl80211_commands cmd,
8379 			    enum nl80211_attrs attr,
8380 			    const struct nl80211_vendor_cmd_info *info,
8381 			    gfp_t gfp)
8382 {
8383 	struct sk_buff *skb;
8384 	void *hdr;
8385 	struct nlattr *data;
8386 
8387 	skb = nlmsg_new(approxlen + 100, gfp);
8388 	if (!skb)
8389 		return NULL;
8390 
8391 	hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8392 	if (!hdr) {
8393 		kfree_skb(skb);
8394 		return NULL;
8395 	}
8396 
8397 	if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8398 		goto nla_put_failure;
8399 
8400 	if (info) {
8401 		if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8402 				info->vendor_id))
8403 			goto nla_put_failure;
8404 		if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8405 				info->subcmd))
8406 			goto nla_put_failure;
8407 	}
8408 
8409 	if (wdev) {
8410 		if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8411 				      wdev_id(wdev), NL80211_ATTR_PAD))
8412 			goto nla_put_failure;
8413 		if (wdev->netdev &&
8414 		    nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8415 				wdev->netdev->ifindex))
8416 			goto nla_put_failure;
8417 	}
8418 
8419 	data = nla_nest_start(skb, attr);
8420 	if (!data)
8421 		goto nla_put_failure;
8422 
8423 	((void **)skb->cb)[0] = rdev;
8424 	((void **)skb->cb)[1] = hdr;
8425 	((void **)skb->cb)[2] = data;
8426 
8427 	return skb;
8428 
8429  nla_put_failure:
8430 	kfree_skb(skb);
8431 	return NULL;
8432 }
8433 
8434 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8435 					   struct wireless_dev *wdev,
8436 					   enum nl80211_commands cmd,
8437 					   enum nl80211_attrs attr,
8438 					   int vendor_event_idx,
8439 					   int approxlen, gfp_t gfp)
8440 {
8441 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8442 	const struct nl80211_vendor_cmd_info *info;
8443 
8444 	switch (cmd) {
8445 	case NL80211_CMD_TESTMODE:
8446 		if (WARN_ON(vendor_event_idx != -1))
8447 			return NULL;
8448 		info = NULL;
8449 		break;
8450 	case NL80211_CMD_VENDOR:
8451 		if (WARN_ON(vendor_event_idx < 0 ||
8452 			    vendor_event_idx >= wiphy->n_vendor_events))
8453 			return NULL;
8454 		info = &wiphy->vendor_events[vendor_event_idx];
8455 		break;
8456 	default:
8457 		WARN_ON(1);
8458 		return NULL;
8459 	}
8460 
8461 	return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8462 					   cmd, attr, info, gfp);
8463 }
8464 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8465 
8466 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8467 {
8468 	struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8469 	void *hdr = ((void **)skb->cb)[1];
8470 	struct nlattr *data = ((void **)skb->cb)[2];
8471 	enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8472 
8473 	/* clear CB data for netlink core to own from now on */
8474 	memset(skb->cb, 0, sizeof(skb->cb));
8475 
8476 	nla_nest_end(skb, data);
8477 	genlmsg_end(skb, hdr);
8478 
8479 	if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8480 		mcgrp = NL80211_MCGRP_VENDOR;
8481 
8482 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8483 				mcgrp, gfp);
8484 }
8485 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8486 
8487 #ifdef CONFIG_NL80211_TESTMODE
8488 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8489 {
8490 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8491 	struct wireless_dev *wdev =
8492 		__cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8493 	int err;
8494 
8495 	if (!rdev->ops->testmode_cmd)
8496 		return -EOPNOTSUPP;
8497 
8498 	if (IS_ERR(wdev)) {
8499 		err = PTR_ERR(wdev);
8500 		if (err != -EINVAL)
8501 			return err;
8502 		wdev = NULL;
8503 	} else if (wdev->wiphy != &rdev->wiphy) {
8504 		return -EINVAL;
8505 	}
8506 
8507 	if (!info->attrs[NL80211_ATTR_TESTDATA])
8508 		return -EINVAL;
8509 
8510 	rdev->cur_cmd_info = info;
8511 	err = rdev_testmode_cmd(rdev, wdev,
8512 				nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8513 				nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8514 	rdev->cur_cmd_info = NULL;
8515 
8516 	return err;
8517 }
8518 
8519 static int nl80211_testmode_dump(struct sk_buff *skb,
8520 				 struct netlink_callback *cb)
8521 {
8522 	struct cfg80211_registered_device *rdev;
8523 	int err;
8524 	long phy_idx;
8525 	void *data = NULL;
8526 	int data_len = 0;
8527 
8528 	rtnl_lock();
8529 
8530 	if (cb->args[0]) {
8531 		/*
8532 		 * 0 is a valid index, but not valid for args[0],
8533 		 * so we need to offset by 1.
8534 		 */
8535 		phy_idx = cb->args[0] - 1;
8536 	} else {
8537 		struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8538 
8539 		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8540 				  attrbuf, nl80211_fam.maxattr, nl80211_policy);
8541 		if (err)
8542 			goto out_err;
8543 
8544 		rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8545 		if (IS_ERR(rdev)) {
8546 			err = PTR_ERR(rdev);
8547 			goto out_err;
8548 		}
8549 		phy_idx = rdev->wiphy_idx;
8550 		rdev = NULL;
8551 
8552 		if (attrbuf[NL80211_ATTR_TESTDATA])
8553 			cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8554 	}
8555 
8556 	if (cb->args[1]) {
8557 		data = nla_data((void *)cb->args[1]);
8558 		data_len = nla_len((void *)cb->args[1]);
8559 	}
8560 
8561 	rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8562 	if (!rdev) {
8563 		err = -ENOENT;
8564 		goto out_err;
8565 	}
8566 
8567 	if (!rdev->ops->testmode_dump) {
8568 		err = -EOPNOTSUPP;
8569 		goto out_err;
8570 	}
8571 
8572 	while (1) {
8573 		void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8574 					   cb->nlh->nlmsg_seq, NLM_F_MULTI,
8575 					   NL80211_CMD_TESTMODE);
8576 		struct nlattr *tmdata;
8577 
8578 		if (!hdr)
8579 			break;
8580 
8581 		if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8582 			genlmsg_cancel(skb, hdr);
8583 			break;
8584 		}
8585 
8586 		tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8587 		if (!tmdata) {
8588 			genlmsg_cancel(skb, hdr);
8589 			break;
8590 		}
8591 		err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8592 		nla_nest_end(skb, tmdata);
8593 
8594 		if (err == -ENOBUFS || err == -ENOENT) {
8595 			genlmsg_cancel(skb, hdr);
8596 			break;
8597 		} else if (err) {
8598 			genlmsg_cancel(skb, hdr);
8599 			goto out_err;
8600 		}
8601 
8602 		genlmsg_end(skb, hdr);
8603 	}
8604 
8605 	err = skb->len;
8606 	/* see above */
8607 	cb->args[0] = phy_idx + 1;
8608  out_err:
8609 	rtnl_unlock();
8610 	return err;
8611 }
8612 #endif
8613 
8614 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8615 {
8616 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8617 	struct net_device *dev = info->user_ptr[1];
8618 	struct cfg80211_connect_params connect;
8619 	struct wiphy *wiphy;
8620 	struct cfg80211_cached_keys *connkeys = NULL;
8621 	int err;
8622 
8623 	memset(&connect, 0, sizeof(connect));
8624 
8625 	if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8626 		return -EINVAL;
8627 
8628 	if (!info->attrs[NL80211_ATTR_SSID] ||
8629 	    !nla_len(info->attrs[NL80211_ATTR_SSID]))
8630 		return -EINVAL;
8631 
8632 	if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8633 		connect.auth_type =
8634 			nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8635 		if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8636 					     NL80211_CMD_CONNECT))
8637 			return -EINVAL;
8638 	} else
8639 		connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8640 
8641 	connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8642 
8643 	err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8644 				      NL80211_MAX_NR_CIPHER_SUITES);
8645 	if (err)
8646 		return err;
8647 
8648 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8649 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8650 		return -EOPNOTSUPP;
8651 
8652 	wiphy = &rdev->wiphy;
8653 
8654 	connect.bg_scan_period = -1;
8655 	if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8656 		(wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8657 		connect.bg_scan_period =
8658 			nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8659 	}
8660 
8661 	if (info->attrs[NL80211_ATTR_MAC])
8662 		connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8663 	else if (info->attrs[NL80211_ATTR_MAC_HINT])
8664 		connect.bssid_hint =
8665 			nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8666 	connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8667 	connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8668 
8669 	if (info->attrs[NL80211_ATTR_IE]) {
8670 		connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8671 		connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8672 	}
8673 
8674 	if (info->attrs[NL80211_ATTR_USE_MFP]) {
8675 		connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8676 		if (connect.mfp != NL80211_MFP_REQUIRED &&
8677 		    connect.mfp != NL80211_MFP_NO)
8678 			return -EINVAL;
8679 	} else {
8680 		connect.mfp = NL80211_MFP_NO;
8681 	}
8682 
8683 	if (info->attrs[NL80211_ATTR_PREV_BSSID])
8684 		connect.prev_bssid =
8685 			nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8686 
8687 	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8688 		connect.channel = nl80211_get_valid_chan(
8689 			wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8690 		if (!connect.channel)
8691 			return -EINVAL;
8692 	} else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8693 		connect.channel_hint = nl80211_get_valid_chan(
8694 			wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8695 		if (!connect.channel_hint)
8696 			return -EINVAL;
8697 	}
8698 
8699 	if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8700 		connkeys = nl80211_parse_connkeys(rdev,
8701 					  info->attrs[NL80211_ATTR_KEYS], NULL);
8702 		if (IS_ERR(connkeys))
8703 			return PTR_ERR(connkeys);
8704 	}
8705 
8706 	if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8707 		connect.flags |= ASSOC_REQ_DISABLE_HT;
8708 
8709 	if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8710 		memcpy(&connect.ht_capa_mask,
8711 		       nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8712 		       sizeof(connect.ht_capa_mask));
8713 
8714 	if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8715 		if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8716 			kzfree(connkeys);
8717 			return -EINVAL;
8718 		}
8719 		memcpy(&connect.ht_capa,
8720 		       nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8721 		       sizeof(connect.ht_capa));
8722 	}
8723 
8724 	if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8725 		connect.flags |= ASSOC_REQ_DISABLE_VHT;
8726 
8727 	if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8728 		memcpy(&connect.vht_capa_mask,
8729 		       nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8730 		       sizeof(connect.vht_capa_mask));
8731 
8732 	if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8733 		if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8734 			kzfree(connkeys);
8735 			return -EINVAL;
8736 		}
8737 		memcpy(&connect.vht_capa,
8738 		       nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8739 		       sizeof(connect.vht_capa));
8740 	}
8741 
8742 	if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8743 		if (!((rdev->wiphy.features &
8744 			NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8745 		       (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8746 		    !wiphy_ext_feature_isset(&rdev->wiphy,
8747 					     NL80211_EXT_FEATURE_RRM)) {
8748 			kzfree(connkeys);
8749 			return -EINVAL;
8750 		}
8751 		connect.flags |= ASSOC_REQ_USE_RRM;
8752 	}
8753 
8754 	connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8755 	if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8756 		kzfree(connkeys);
8757 		return -EOPNOTSUPP;
8758 	}
8759 
8760 	if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8761 		/* bss selection makes no sense if bssid is set */
8762 		if (connect.bssid) {
8763 			kzfree(connkeys);
8764 			return -EINVAL;
8765 		}
8766 
8767 		err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8768 				       wiphy, &connect.bss_select);
8769 		if (err) {
8770 			kzfree(connkeys);
8771 			return err;
8772 		}
8773 	}
8774 
8775 	wdev_lock(dev->ieee80211_ptr);
8776 	err = cfg80211_connect(rdev, dev, &connect, connkeys,
8777 			       connect.prev_bssid);
8778 	wdev_unlock(dev->ieee80211_ptr);
8779 	if (err)
8780 		kzfree(connkeys);
8781 	return err;
8782 }
8783 
8784 static int nl80211_update_connect_params(struct sk_buff *skb,
8785 					 struct genl_info *info)
8786 {
8787 	struct cfg80211_connect_params connect = {};
8788 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8789 	struct net_device *dev = info->user_ptr[1];
8790 	struct wireless_dev *wdev = dev->ieee80211_ptr;
8791 	u32 changed = 0;
8792 	int ret;
8793 
8794 	if (!rdev->ops->update_connect_params)
8795 		return -EOPNOTSUPP;
8796 
8797 	if (info->attrs[NL80211_ATTR_IE]) {
8798 		if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8799 			return -EINVAL;
8800 		connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8801 		connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8802 		changed |= UPDATE_ASSOC_IES;
8803 	}
8804 
8805 	wdev_lock(dev->ieee80211_ptr);
8806 	if (!wdev->current_bss)
8807 		ret = -ENOLINK;
8808 	else
8809 		ret = rdev_update_connect_params(rdev, dev, &connect, changed);
8810 	wdev_unlock(dev->ieee80211_ptr);
8811 
8812 	return ret;
8813 }
8814 
8815 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8816 {
8817 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8818 	struct net_device *dev = info->user_ptr[1];
8819 	u16 reason;
8820 	int ret;
8821 
8822 	if (!info->attrs[NL80211_ATTR_REASON_CODE])
8823 		reason = WLAN_REASON_DEAUTH_LEAVING;
8824 	else
8825 		reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8826 
8827 	if (reason == 0)
8828 		return -EINVAL;
8829 
8830 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8831 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8832 		return -EOPNOTSUPP;
8833 
8834 	wdev_lock(dev->ieee80211_ptr);
8835 	ret = cfg80211_disconnect(rdev, dev, reason, true);
8836 	wdev_unlock(dev->ieee80211_ptr);
8837 	return ret;
8838 }
8839 
8840 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8841 {
8842 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8843 	struct net *net;
8844 	int err;
8845 
8846 	if (info->attrs[NL80211_ATTR_PID]) {
8847 		u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8848 
8849 		net = get_net_ns_by_pid(pid);
8850 	} else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8851 		u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8852 
8853 		net = get_net_ns_by_fd(fd);
8854 	} else {
8855 		return -EINVAL;
8856 	}
8857 
8858 	if (IS_ERR(net))
8859 		return PTR_ERR(net);
8860 
8861 	err = 0;
8862 
8863 	/* check if anything to do */
8864 	if (!net_eq(wiphy_net(&rdev->wiphy), net))
8865 		err = cfg80211_switch_netns(rdev, net);
8866 
8867 	put_net(net);
8868 	return err;
8869 }
8870 
8871 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8872 {
8873 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8874 	int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8875 			struct cfg80211_pmksa *pmksa) = NULL;
8876 	struct net_device *dev = info->user_ptr[1];
8877 	struct cfg80211_pmksa pmksa;
8878 
8879 	memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8880 
8881 	if (!info->attrs[NL80211_ATTR_MAC])
8882 		return -EINVAL;
8883 
8884 	if (!info->attrs[NL80211_ATTR_PMKID])
8885 		return -EINVAL;
8886 
8887 	pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8888 	pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8889 
8890 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8891 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8892 		return -EOPNOTSUPP;
8893 
8894 	switch (info->genlhdr->cmd) {
8895 	case NL80211_CMD_SET_PMKSA:
8896 		rdev_ops = rdev->ops->set_pmksa;
8897 		break;
8898 	case NL80211_CMD_DEL_PMKSA:
8899 		rdev_ops = rdev->ops->del_pmksa;
8900 		break;
8901 	default:
8902 		WARN_ON(1);
8903 		break;
8904 	}
8905 
8906 	if (!rdev_ops)
8907 		return -EOPNOTSUPP;
8908 
8909 	return rdev_ops(&rdev->wiphy, dev, &pmksa);
8910 }
8911 
8912 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8913 {
8914 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8915 	struct net_device *dev = info->user_ptr[1];
8916 
8917 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8918 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8919 		return -EOPNOTSUPP;
8920 
8921 	if (!rdev->ops->flush_pmksa)
8922 		return -EOPNOTSUPP;
8923 
8924 	return rdev_flush_pmksa(rdev, dev);
8925 }
8926 
8927 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8928 {
8929 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8930 	struct net_device *dev = info->user_ptr[1];
8931 	u8 action_code, dialog_token;
8932 	u32 peer_capability = 0;
8933 	u16 status_code;
8934 	u8 *peer;
8935 	bool initiator;
8936 
8937 	if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8938 	    !rdev->ops->tdls_mgmt)
8939 		return -EOPNOTSUPP;
8940 
8941 	if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8942 	    !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8943 	    !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8944 	    !info->attrs[NL80211_ATTR_IE] ||
8945 	    !info->attrs[NL80211_ATTR_MAC])
8946 		return -EINVAL;
8947 
8948 	peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8949 	action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8950 	status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8951 	dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8952 	initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8953 	if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8954 		peer_capability =
8955 			nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8956 
8957 	return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8958 			      dialog_token, status_code, peer_capability,
8959 			      initiator,
8960 			      nla_data(info->attrs[NL80211_ATTR_IE]),
8961 			      nla_len(info->attrs[NL80211_ATTR_IE]));
8962 }
8963 
8964 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8965 {
8966 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8967 	struct net_device *dev = info->user_ptr[1];
8968 	enum nl80211_tdls_operation operation;
8969 	u8 *peer;
8970 
8971 	if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8972 	    !rdev->ops->tdls_oper)
8973 		return -EOPNOTSUPP;
8974 
8975 	if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8976 	    !info->attrs[NL80211_ATTR_MAC])
8977 		return -EINVAL;
8978 
8979 	operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8980 	peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8981 
8982 	return rdev_tdls_oper(rdev, dev, peer, operation);
8983 }
8984 
8985 static int nl80211_remain_on_channel(struct sk_buff *skb,
8986 				     struct genl_info *info)
8987 {
8988 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
8989 	struct wireless_dev *wdev = info->user_ptr[1];
8990 	struct cfg80211_chan_def chandef;
8991 	struct sk_buff *msg;
8992 	void *hdr;
8993 	u64 cookie;
8994 	u32 duration;
8995 	int err;
8996 
8997 	if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8998 	    !info->attrs[NL80211_ATTR_DURATION])
8999 		return -EINVAL;
9000 
9001 	duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9002 
9003 	if (!rdev->ops->remain_on_channel ||
9004 	    !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9005 		return -EOPNOTSUPP;
9006 
9007 	/*
9008 	 * We should be on that channel for at least a minimum amount of
9009 	 * time (10ms) but no longer than the driver supports.
9010 	 */
9011 	if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9012 	    duration > rdev->wiphy.max_remain_on_channel_duration)
9013 		return -EINVAL;
9014 
9015 	err = nl80211_parse_chandef(rdev, info, &chandef);
9016 	if (err)
9017 		return err;
9018 
9019 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9020 	if (!msg)
9021 		return -ENOMEM;
9022 
9023 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9024 			     NL80211_CMD_REMAIN_ON_CHANNEL);
9025 	if (!hdr) {
9026 		err = -ENOBUFS;
9027 		goto free_msg;
9028 	}
9029 
9030 	err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9031 				     duration, &cookie);
9032 
9033 	if (err)
9034 		goto free_msg;
9035 
9036 	if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9037 			      NL80211_ATTR_PAD))
9038 		goto nla_put_failure;
9039 
9040 	genlmsg_end(msg, hdr);
9041 
9042 	return genlmsg_reply(msg, info);
9043 
9044  nla_put_failure:
9045 	err = -ENOBUFS;
9046  free_msg:
9047 	nlmsg_free(msg);
9048 	return err;
9049 }
9050 
9051 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9052 					    struct genl_info *info)
9053 {
9054 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9055 	struct wireless_dev *wdev = info->user_ptr[1];
9056 	u64 cookie;
9057 
9058 	if (!info->attrs[NL80211_ATTR_COOKIE])
9059 		return -EINVAL;
9060 
9061 	if (!rdev->ops->cancel_remain_on_channel)
9062 		return -EOPNOTSUPP;
9063 
9064 	cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9065 
9066 	return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9067 }
9068 
9069 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9070 				       struct genl_info *info)
9071 {
9072 	struct cfg80211_bitrate_mask mask;
9073 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9074 	struct net_device *dev = info->user_ptr[1];
9075 	int err;
9076 
9077 	if (!rdev->ops->set_bitrate_mask)
9078 		return -EOPNOTSUPP;
9079 
9080 	err = nl80211_parse_tx_bitrate_mask(info, &mask);
9081 	if (err)
9082 		return err;
9083 
9084 	return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9085 }
9086 
9087 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9088 {
9089 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9090 	struct wireless_dev *wdev = info->user_ptr[1];
9091 	u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9092 
9093 	if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9094 		return -EINVAL;
9095 
9096 	if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9097 		frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9098 
9099 	switch (wdev->iftype) {
9100 	case NL80211_IFTYPE_STATION:
9101 	case NL80211_IFTYPE_ADHOC:
9102 	case NL80211_IFTYPE_P2P_CLIENT:
9103 	case NL80211_IFTYPE_AP:
9104 	case NL80211_IFTYPE_AP_VLAN:
9105 	case NL80211_IFTYPE_MESH_POINT:
9106 	case NL80211_IFTYPE_P2P_GO:
9107 	case NL80211_IFTYPE_P2P_DEVICE:
9108 		break;
9109 	case NL80211_IFTYPE_NAN:
9110 	default:
9111 		return -EOPNOTSUPP;
9112 	}
9113 
9114 	/* not much point in registering if we can't reply */
9115 	if (!rdev->ops->mgmt_tx)
9116 		return -EOPNOTSUPP;
9117 
9118 	return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9119 			nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9120 			nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9121 }
9122 
9123 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9124 {
9125 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9126 	struct wireless_dev *wdev = info->user_ptr[1];
9127 	struct cfg80211_chan_def chandef;
9128 	int err;
9129 	void *hdr = NULL;
9130 	u64 cookie;
9131 	struct sk_buff *msg = NULL;
9132 	struct cfg80211_mgmt_tx_params params = {
9133 		.dont_wait_for_ack =
9134 			info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9135 	};
9136 
9137 	if (!info->attrs[NL80211_ATTR_FRAME])
9138 		return -EINVAL;
9139 
9140 	if (!rdev->ops->mgmt_tx)
9141 		return -EOPNOTSUPP;
9142 
9143 	switch (wdev->iftype) {
9144 	case NL80211_IFTYPE_P2P_DEVICE:
9145 		if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9146 			return -EINVAL;
9147 	case NL80211_IFTYPE_STATION:
9148 	case NL80211_IFTYPE_ADHOC:
9149 	case NL80211_IFTYPE_P2P_CLIENT:
9150 	case NL80211_IFTYPE_AP:
9151 	case NL80211_IFTYPE_AP_VLAN:
9152 	case NL80211_IFTYPE_MESH_POINT:
9153 	case NL80211_IFTYPE_P2P_GO:
9154 		break;
9155 	case NL80211_IFTYPE_NAN:
9156 	default:
9157 		return -EOPNOTSUPP;
9158 	}
9159 
9160 	if (info->attrs[NL80211_ATTR_DURATION]) {
9161 		if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9162 			return -EINVAL;
9163 		params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9164 
9165 		/*
9166 		 * We should wait on the channel for at least a minimum amount
9167 		 * of time (10ms) but no longer than the driver supports.
9168 		 */
9169 		if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9170 		    params.wait > rdev->wiphy.max_remain_on_channel_duration)
9171 			return -EINVAL;
9172 	}
9173 
9174 	params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9175 
9176 	if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9177 		return -EINVAL;
9178 
9179 	params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9180 
9181 	/* get the channel if any has been specified, otherwise pass NULL to
9182 	 * the driver. The latter will use the current one
9183 	 */
9184 	chandef.chan = NULL;
9185 	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9186 		err = nl80211_parse_chandef(rdev, info, &chandef);
9187 		if (err)
9188 			return err;
9189 	}
9190 
9191 	if (!chandef.chan && params.offchan)
9192 		return -EINVAL;
9193 
9194 	params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9195 	params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9196 
9197 	if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9198 		int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9199 		int i;
9200 
9201 		if (len % sizeof(u16))
9202 			return -EINVAL;
9203 
9204 		params.n_csa_offsets = len / sizeof(u16);
9205 		params.csa_offsets =
9206 			nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9207 
9208 		/* check that all the offsets fit the frame */
9209 		for (i = 0; i < params.n_csa_offsets; i++) {
9210 			if (params.csa_offsets[i] >= params.len)
9211 				return -EINVAL;
9212 		}
9213 	}
9214 
9215 	if (!params.dont_wait_for_ack) {
9216 		msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9217 		if (!msg)
9218 			return -ENOMEM;
9219 
9220 		hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9221 				     NL80211_CMD_FRAME);
9222 		if (!hdr) {
9223 			err = -ENOBUFS;
9224 			goto free_msg;
9225 		}
9226 	}
9227 
9228 	params.chan = chandef.chan;
9229 	err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9230 	if (err)
9231 		goto free_msg;
9232 
9233 	if (msg) {
9234 		if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9235 				      NL80211_ATTR_PAD))
9236 			goto nla_put_failure;
9237 
9238 		genlmsg_end(msg, hdr);
9239 		return genlmsg_reply(msg, info);
9240 	}
9241 
9242 	return 0;
9243 
9244  nla_put_failure:
9245 	err = -ENOBUFS;
9246  free_msg:
9247 	nlmsg_free(msg);
9248 	return err;
9249 }
9250 
9251 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9252 {
9253 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9254 	struct wireless_dev *wdev = info->user_ptr[1];
9255 	u64 cookie;
9256 
9257 	if (!info->attrs[NL80211_ATTR_COOKIE])
9258 		return -EINVAL;
9259 
9260 	if (!rdev->ops->mgmt_tx_cancel_wait)
9261 		return -EOPNOTSUPP;
9262 
9263 	switch (wdev->iftype) {
9264 	case NL80211_IFTYPE_STATION:
9265 	case NL80211_IFTYPE_ADHOC:
9266 	case NL80211_IFTYPE_P2P_CLIENT:
9267 	case NL80211_IFTYPE_AP:
9268 	case NL80211_IFTYPE_AP_VLAN:
9269 	case NL80211_IFTYPE_P2P_GO:
9270 	case NL80211_IFTYPE_P2P_DEVICE:
9271 		break;
9272 	case NL80211_IFTYPE_NAN:
9273 	default:
9274 		return -EOPNOTSUPP;
9275 	}
9276 
9277 	cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9278 
9279 	return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9280 }
9281 
9282 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9283 {
9284 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9285 	struct wireless_dev *wdev;
9286 	struct net_device *dev = info->user_ptr[1];
9287 	u8 ps_state;
9288 	bool state;
9289 	int err;
9290 
9291 	if (!info->attrs[NL80211_ATTR_PS_STATE])
9292 		return -EINVAL;
9293 
9294 	ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9295 
9296 	if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9297 		return -EINVAL;
9298 
9299 	wdev = dev->ieee80211_ptr;
9300 
9301 	if (!rdev->ops->set_power_mgmt)
9302 		return -EOPNOTSUPP;
9303 
9304 	state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9305 
9306 	if (state == wdev->ps)
9307 		return 0;
9308 
9309 	err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9310 	if (!err)
9311 		wdev->ps = state;
9312 	return err;
9313 }
9314 
9315 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9316 {
9317 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9318 	enum nl80211_ps_state ps_state;
9319 	struct wireless_dev *wdev;
9320 	struct net_device *dev = info->user_ptr[1];
9321 	struct sk_buff *msg;
9322 	void *hdr;
9323 	int err;
9324 
9325 	wdev = dev->ieee80211_ptr;
9326 
9327 	if (!rdev->ops->set_power_mgmt)
9328 		return -EOPNOTSUPP;
9329 
9330 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9331 	if (!msg)
9332 		return -ENOMEM;
9333 
9334 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9335 			     NL80211_CMD_GET_POWER_SAVE);
9336 	if (!hdr) {
9337 		err = -ENOBUFS;
9338 		goto free_msg;
9339 	}
9340 
9341 	if (wdev->ps)
9342 		ps_state = NL80211_PS_ENABLED;
9343 	else
9344 		ps_state = NL80211_PS_DISABLED;
9345 
9346 	if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9347 		goto nla_put_failure;
9348 
9349 	genlmsg_end(msg, hdr);
9350 	return genlmsg_reply(msg, info);
9351 
9352  nla_put_failure:
9353 	err = -ENOBUFS;
9354  free_msg:
9355 	nlmsg_free(msg);
9356 	return err;
9357 }
9358 
9359 static const struct nla_policy
9360 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9361 	[NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9362 	[NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9363 	[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9364 	[NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9365 	[NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9366 	[NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9367 };
9368 
9369 static int nl80211_set_cqm_txe(struct genl_info *info,
9370 			       u32 rate, u32 pkts, u32 intvl)
9371 {
9372 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9373 	struct net_device *dev = info->user_ptr[1];
9374 	struct wireless_dev *wdev = dev->ieee80211_ptr;
9375 
9376 	if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9377 		return -EINVAL;
9378 
9379 	if (!rdev->ops->set_cqm_txe_config)
9380 		return -EOPNOTSUPP;
9381 
9382 	if (wdev->iftype != NL80211_IFTYPE_STATION &&
9383 	    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9384 		return -EOPNOTSUPP;
9385 
9386 	return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9387 }
9388 
9389 static int nl80211_set_cqm_rssi(struct genl_info *info,
9390 				s32 threshold, u32 hysteresis)
9391 {
9392 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9393 	struct net_device *dev = info->user_ptr[1];
9394 	struct wireless_dev *wdev = dev->ieee80211_ptr;
9395 
9396 	if (threshold > 0)
9397 		return -EINVAL;
9398 
9399 	/* disabling - hysteresis should also be zero then */
9400 	if (threshold == 0)
9401 		hysteresis = 0;
9402 
9403 	if (!rdev->ops->set_cqm_rssi_config)
9404 		return -EOPNOTSUPP;
9405 
9406 	if (wdev->iftype != NL80211_IFTYPE_STATION &&
9407 	    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9408 		return -EOPNOTSUPP;
9409 
9410 	return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9411 }
9412 
9413 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9414 {
9415 	struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9416 	struct nlattr *cqm;
9417 	int err;
9418 
9419 	cqm = info->attrs[NL80211_ATTR_CQM];
9420 	if (!cqm)
9421 		return -EINVAL;
9422 
9423 	err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9424 			       nl80211_attr_cqm_policy);
9425 	if (err)
9426 		return err;
9427 
9428 	if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9429 	    attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9430 		s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9431 		u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9432 
9433 		return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9434 	}
9435 
9436 	if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9437 	    attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9438 	    attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9439 		u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9440 		u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9441 		u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9442 
9443 		return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9444 	}
9445 
9446 	return -EINVAL;
9447 }
9448 
9449 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9450 {
9451 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9452 	struct net_device *dev = info->user_ptr[1];
9453 	struct ocb_setup setup = {};
9454 	int err;
9455 
9456 	err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9457 	if (err)
9458 		return err;
9459 
9460 	return cfg80211_join_ocb(rdev, dev, &setup);
9461 }
9462 
9463 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9464 {
9465 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9466 	struct net_device *dev = info->user_ptr[1];
9467 
9468 	return cfg80211_leave_ocb(rdev, dev);
9469 }
9470 
9471 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9472 {
9473 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9474 	struct net_device *dev = info->user_ptr[1];
9475 	struct mesh_config cfg;
9476 	struct mesh_setup setup;
9477 	int err;
9478 
9479 	/* start with default */
9480 	memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9481 	memcpy(&setup, &default_mesh_setup, sizeof(setup));
9482 
9483 	if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9484 		/* and parse parameters if given */
9485 		err = nl80211_parse_mesh_config(info, &cfg, NULL);
9486 		if (err)
9487 			return err;
9488 	}
9489 
9490 	if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9491 	    !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9492 		return -EINVAL;
9493 
9494 	setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9495 	setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9496 
9497 	if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9498 	    !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9499 			    nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9500 			return -EINVAL;
9501 
9502 	if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9503 		setup.beacon_interval =
9504 			nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9505 
9506 		err = cfg80211_validate_beacon_int(rdev,
9507 						   NL80211_IFTYPE_MESH_POINT,
9508 						   setup.beacon_interval);
9509 		if (err)
9510 			return err;
9511 	}
9512 
9513 	if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9514 		setup.dtim_period =
9515 			nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9516 		if (setup.dtim_period < 1 || setup.dtim_period > 100)
9517 			return -EINVAL;
9518 	}
9519 
9520 	if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9521 		/* parse additional setup parameters if given */
9522 		err = nl80211_parse_mesh_setup(info, &setup);
9523 		if (err)
9524 			return err;
9525 	}
9526 
9527 	if (setup.user_mpm)
9528 		cfg.auto_open_plinks = false;
9529 
9530 	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9531 		err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9532 		if (err)
9533 			return err;
9534 	} else {
9535 		/* cfg80211_join_mesh() will sort it out */
9536 		setup.chandef.chan = NULL;
9537 	}
9538 
9539 	if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9540 		u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9541 		int n_rates =
9542 			nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9543 		struct ieee80211_supported_band *sband;
9544 
9545 		if (!setup.chandef.chan)
9546 			return -EINVAL;
9547 
9548 		sband = rdev->wiphy.bands[setup.chandef.chan->band];
9549 
9550 		err = ieee80211_get_ratemask(sband, rates, n_rates,
9551 					     &setup.basic_rates);
9552 		if (err)
9553 			return err;
9554 	}
9555 
9556 	if (info->attrs[NL80211_ATTR_TX_RATES]) {
9557 		err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9558 		if (err)
9559 			return err;
9560 
9561 		err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9562 					      &setup.beacon_rate);
9563 		if (err)
9564 			return err;
9565 	}
9566 
9567 	return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9568 }
9569 
9570 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9571 {
9572 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9573 	struct net_device *dev = info->user_ptr[1];
9574 
9575 	return cfg80211_leave_mesh(rdev, dev);
9576 }
9577 
9578 #ifdef CONFIG_PM
9579 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9580 					struct cfg80211_registered_device *rdev)
9581 {
9582 	struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9583 	struct nlattr *nl_pats, *nl_pat;
9584 	int i, pat_len;
9585 
9586 	if (!wowlan->n_patterns)
9587 		return 0;
9588 
9589 	nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9590 	if (!nl_pats)
9591 		return -ENOBUFS;
9592 
9593 	for (i = 0; i < wowlan->n_patterns; i++) {
9594 		nl_pat = nla_nest_start(msg, i + 1);
9595 		if (!nl_pat)
9596 			return -ENOBUFS;
9597 		pat_len = wowlan->patterns[i].pattern_len;
9598 		if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9599 			    wowlan->patterns[i].mask) ||
9600 		    nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9601 			    wowlan->patterns[i].pattern) ||
9602 		    nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9603 				wowlan->patterns[i].pkt_offset))
9604 			return -ENOBUFS;
9605 		nla_nest_end(msg, nl_pat);
9606 	}
9607 	nla_nest_end(msg, nl_pats);
9608 
9609 	return 0;
9610 }
9611 
9612 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9613 				   struct cfg80211_wowlan_tcp *tcp)
9614 {
9615 	struct nlattr *nl_tcp;
9616 
9617 	if (!tcp)
9618 		return 0;
9619 
9620 	nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9621 	if (!nl_tcp)
9622 		return -ENOBUFS;
9623 
9624 	if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9625 	    nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9626 	    nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9627 	    nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9628 	    nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9629 	    nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9630 		    tcp->payload_len, tcp->payload) ||
9631 	    nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9632 			tcp->data_interval) ||
9633 	    nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9634 		    tcp->wake_len, tcp->wake_data) ||
9635 	    nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9636 		    DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9637 		return -ENOBUFS;
9638 
9639 	if (tcp->payload_seq.len &&
9640 	    nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9641 		    sizeof(tcp->payload_seq), &tcp->payload_seq))
9642 		return -ENOBUFS;
9643 
9644 	if (tcp->payload_tok.len &&
9645 	    nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9646 		    sizeof(tcp->payload_tok) + tcp->tokens_size,
9647 		    &tcp->payload_tok))
9648 		return -ENOBUFS;
9649 
9650 	nla_nest_end(msg, nl_tcp);
9651 
9652 	return 0;
9653 }
9654 
9655 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9656 				  struct cfg80211_sched_scan_request *req)
9657 {
9658 	struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9659 	int i;
9660 
9661 	if (!req)
9662 		return 0;
9663 
9664 	nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9665 	if (!nd)
9666 		return -ENOBUFS;
9667 
9668 	if (req->n_scan_plans == 1 &&
9669 	    nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9670 			req->scan_plans[0].interval * 1000))
9671 		return -ENOBUFS;
9672 
9673 	if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9674 		return -ENOBUFS;
9675 
9676 	freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9677 	if (!freqs)
9678 		return -ENOBUFS;
9679 
9680 	for (i = 0; i < req->n_channels; i++) {
9681 		if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9682 			return -ENOBUFS;
9683 	}
9684 
9685 	nla_nest_end(msg, freqs);
9686 
9687 	if (req->n_match_sets) {
9688 		matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9689 		if (!matches)
9690 			return -ENOBUFS;
9691 
9692 		for (i = 0; i < req->n_match_sets; i++) {
9693 			match = nla_nest_start(msg, i);
9694 			if (!match)
9695 				return -ENOBUFS;
9696 
9697 			if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9698 				    req->match_sets[i].ssid.ssid_len,
9699 				    req->match_sets[i].ssid.ssid))
9700 				return -ENOBUFS;
9701 			nla_nest_end(msg, match);
9702 		}
9703 		nla_nest_end(msg, matches);
9704 	}
9705 
9706 	scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9707 	if (!scan_plans)
9708 		return -ENOBUFS;
9709 
9710 	for (i = 0; i < req->n_scan_plans; i++) {
9711 		scan_plan = nla_nest_start(msg, i + 1);
9712 		if (!scan_plan)
9713 			return -ENOBUFS;
9714 
9715 		if (!scan_plan ||
9716 		    nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9717 				req->scan_plans[i].interval) ||
9718 		    (req->scan_plans[i].iterations &&
9719 		     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9720 				 req->scan_plans[i].iterations)))
9721 			return -ENOBUFS;
9722 		nla_nest_end(msg, scan_plan);
9723 	}
9724 	nla_nest_end(msg, scan_plans);
9725 
9726 	nla_nest_end(msg, nd);
9727 
9728 	return 0;
9729 }
9730 
9731 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9732 {
9733 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9734 	struct sk_buff *msg;
9735 	void *hdr;
9736 	u32 size = NLMSG_DEFAULT_SIZE;
9737 
9738 	if (!rdev->wiphy.wowlan)
9739 		return -EOPNOTSUPP;
9740 
9741 	if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9742 		/* adjust size to have room for all the data */
9743 		size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9744 			rdev->wiphy.wowlan_config->tcp->payload_len +
9745 			rdev->wiphy.wowlan_config->tcp->wake_len +
9746 			rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9747 	}
9748 
9749 	msg = nlmsg_new(size, GFP_KERNEL);
9750 	if (!msg)
9751 		return -ENOMEM;
9752 
9753 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9754 			     NL80211_CMD_GET_WOWLAN);
9755 	if (!hdr)
9756 		goto nla_put_failure;
9757 
9758 	if (rdev->wiphy.wowlan_config) {
9759 		struct nlattr *nl_wowlan;
9760 
9761 		nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9762 		if (!nl_wowlan)
9763 			goto nla_put_failure;
9764 
9765 		if ((rdev->wiphy.wowlan_config->any &&
9766 		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9767 		    (rdev->wiphy.wowlan_config->disconnect &&
9768 		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9769 		    (rdev->wiphy.wowlan_config->magic_pkt &&
9770 		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9771 		    (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9772 		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9773 		    (rdev->wiphy.wowlan_config->eap_identity_req &&
9774 		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9775 		    (rdev->wiphy.wowlan_config->four_way_handshake &&
9776 		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9777 		    (rdev->wiphy.wowlan_config->rfkill_release &&
9778 		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9779 			goto nla_put_failure;
9780 
9781 		if (nl80211_send_wowlan_patterns(msg, rdev))
9782 			goto nla_put_failure;
9783 
9784 		if (nl80211_send_wowlan_tcp(msg,
9785 					    rdev->wiphy.wowlan_config->tcp))
9786 			goto nla_put_failure;
9787 
9788 		if (nl80211_send_wowlan_nd(
9789 			    msg,
9790 			    rdev->wiphy.wowlan_config->nd_config))
9791 			goto nla_put_failure;
9792 
9793 		nla_nest_end(msg, nl_wowlan);
9794 	}
9795 
9796 	genlmsg_end(msg, hdr);
9797 	return genlmsg_reply(msg, info);
9798 
9799 nla_put_failure:
9800 	nlmsg_free(msg);
9801 	return -ENOBUFS;
9802 }
9803 
9804 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9805 				    struct nlattr *attr,
9806 				    struct cfg80211_wowlan *trig)
9807 {
9808 	struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9809 	struct cfg80211_wowlan_tcp *cfg;
9810 	struct nl80211_wowlan_tcp_data_token *tok = NULL;
9811 	struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9812 	u32 size;
9813 	u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9814 	int err, port;
9815 
9816 	if (!rdev->wiphy.wowlan->tcp)
9817 		return -EINVAL;
9818 
9819 	err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
9820 			       nl80211_wowlan_tcp_policy);
9821 	if (err)
9822 		return err;
9823 
9824 	if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9825 	    !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9826 	    !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9827 	    !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9828 	    !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9829 	    !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9830 	    !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9831 	    !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9832 		return -EINVAL;
9833 
9834 	data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9835 	if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9836 		return -EINVAL;
9837 
9838 	if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9839 			rdev->wiphy.wowlan->tcp->data_interval_max ||
9840 	    nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9841 		return -EINVAL;
9842 
9843 	wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9844 	if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9845 		return -EINVAL;
9846 
9847 	wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9848 	if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9849 		return -EINVAL;
9850 
9851 	if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9852 		u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9853 
9854 		tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9855 		tokens_size = tokln - sizeof(*tok);
9856 
9857 		if (!tok->len || tokens_size % tok->len)
9858 			return -EINVAL;
9859 		if (!rdev->wiphy.wowlan->tcp->tok)
9860 			return -EINVAL;
9861 		if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9862 			return -EINVAL;
9863 		if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9864 			return -EINVAL;
9865 		if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9866 			return -EINVAL;
9867 		if (tok->offset + tok->len > data_size)
9868 			return -EINVAL;
9869 	}
9870 
9871 	if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9872 		seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9873 		if (!rdev->wiphy.wowlan->tcp->seq)
9874 			return -EINVAL;
9875 		if (seq->len == 0 || seq->len > 4)
9876 			return -EINVAL;
9877 		if (seq->len + seq->offset > data_size)
9878 			return -EINVAL;
9879 	}
9880 
9881 	size = sizeof(*cfg);
9882 	size += data_size;
9883 	size += wake_size + wake_mask_size;
9884 	size += tokens_size;
9885 
9886 	cfg = kzalloc(size, GFP_KERNEL);
9887 	if (!cfg)
9888 		return -ENOMEM;
9889 	cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9890 	cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9891 	memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9892 	       ETH_ALEN);
9893 	if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9894 		port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9895 	else
9896 		port = 0;
9897 #ifdef CONFIG_INET
9898 	/* allocate a socket and port for it and use it */
9899 	err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9900 			    IPPROTO_TCP, &cfg->sock, 1);
9901 	if (err) {
9902 		kfree(cfg);
9903 		return err;
9904 	}
9905 	if (inet_csk_get_port(cfg->sock->sk, port)) {
9906 		sock_release(cfg->sock);
9907 		kfree(cfg);
9908 		return -EADDRINUSE;
9909 	}
9910 	cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9911 #else
9912 	if (!port) {
9913 		kfree(cfg);
9914 		return -EINVAL;
9915 	}
9916 	cfg->src_port = port;
9917 #endif
9918 
9919 	cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9920 	cfg->payload_len = data_size;
9921 	cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9922 	memcpy((void *)cfg->payload,
9923 	       nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9924 	       data_size);
9925 	if (seq)
9926 		cfg->payload_seq = *seq;
9927 	cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9928 	cfg->wake_len = wake_size;
9929 	cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9930 	memcpy((void *)cfg->wake_data,
9931 	       nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9932 	       wake_size);
9933 	cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9934 			 data_size + wake_size;
9935 	memcpy((void *)cfg->wake_mask,
9936 	       nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9937 	       wake_mask_size);
9938 	if (tok) {
9939 		cfg->tokens_size = tokens_size;
9940 		memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9941 	}
9942 
9943 	trig->tcp = cfg;
9944 
9945 	return 0;
9946 }
9947 
9948 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9949 				   const struct wiphy_wowlan_support *wowlan,
9950 				   struct nlattr *attr,
9951 				   struct cfg80211_wowlan *trig)
9952 {
9953 	struct nlattr **tb;
9954 	int err;
9955 
9956 	tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9957 	if (!tb)
9958 		return -ENOMEM;
9959 
9960 	if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9961 		err = -EOPNOTSUPP;
9962 		goto out;
9963 	}
9964 
9965 	err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy);
9966 	if (err)
9967 		goto out;
9968 
9969 	trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9970 	err = PTR_ERR_OR_ZERO(trig->nd_config);
9971 	if (err)
9972 		trig->nd_config = NULL;
9973 
9974 out:
9975 	kfree(tb);
9976 	return err;
9977 }
9978 
9979 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9980 {
9981 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
9982 	struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9983 	struct cfg80211_wowlan new_triggers = {};
9984 	struct cfg80211_wowlan *ntrig;
9985 	const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9986 	int err, i;
9987 	bool prev_enabled = rdev->wiphy.wowlan_config;
9988 	bool regular = false;
9989 
9990 	if (!wowlan)
9991 		return -EOPNOTSUPP;
9992 
9993 	if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9994 		cfg80211_rdev_free_wowlan(rdev);
9995 		rdev->wiphy.wowlan_config = NULL;
9996 		goto set_wakeup;
9997 	}
9998 
9999 	err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10000 			       info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10001 			       nl80211_wowlan_policy);
10002 	if (err)
10003 		return err;
10004 
10005 	if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10006 		if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10007 			return -EINVAL;
10008 		new_triggers.any = true;
10009 	}
10010 
10011 	if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10012 		if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10013 			return -EINVAL;
10014 		new_triggers.disconnect = true;
10015 		regular = true;
10016 	}
10017 
10018 	if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10019 		if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10020 			return -EINVAL;
10021 		new_triggers.magic_pkt = true;
10022 		regular = true;
10023 	}
10024 
10025 	if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10026 		return -EINVAL;
10027 
10028 	if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10029 		if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10030 			return -EINVAL;
10031 		new_triggers.gtk_rekey_failure = true;
10032 		regular = true;
10033 	}
10034 
10035 	if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10036 		if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10037 			return -EINVAL;
10038 		new_triggers.eap_identity_req = true;
10039 		regular = true;
10040 	}
10041 
10042 	if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10043 		if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10044 			return -EINVAL;
10045 		new_triggers.four_way_handshake = true;
10046 		regular = true;
10047 	}
10048 
10049 	if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10050 		if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10051 			return -EINVAL;
10052 		new_triggers.rfkill_release = true;
10053 		regular = true;
10054 	}
10055 
10056 	if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10057 		struct nlattr *pat;
10058 		int n_patterns = 0;
10059 		int rem, pat_len, mask_len, pkt_offset;
10060 		struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10061 
10062 		regular = true;
10063 
10064 		nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10065 				    rem)
10066 			n_patterns++;
10067 		if (n_patterns > wowlan->n_patterns)
10068 			return -EINVAL;
10069 
10070 		new_triggers.patterns = kcalloc(n_patterns,
10071 						sizeof(new_triggers.patterns[0]),
10072 						GFP_KERNEL);
10073 		if (!new_triggers.patterns)
10074 			return -ENOMEM;
10075 
10076 		new_triggers.n_patterns = n_patterns;
10077 		i = 0;
10078 
10079 		nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10080 				    rem) {
10081 			u8 *mask_pat;
10082 
10083 			nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10084 					 NULL);
10085 			err = -EINVAL;
10086 			if (!pat_tb[NL80211_PKTPAT_MASK] ||
10087 			    !pat_tb[NL80211_PKTPAT_PATTERN])
10088 				goto error;
10089 			pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10090 			mask_len = DIV_ROUND_UP(pat_len, 8);
10091 			if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10092 				goto error;
10093 			if (pat_len > wowlan->pattern_max_len ||
10094 			    pat_len < wowlan->pattern_min_len)
10095 				goto error;
10096 
10097 			if (!pat_tb[NL80211_PKTPAT_OFFSET])
10098 				pkt_offset = 0;
10099 			else
10100 				pkt_offset = nla_get_u32(
10101 					pat_tb[NL80211_PKTPAT_OFFSET]);
10102 			if (pkt_offset > wowlan->max_pkt_offset)
10103 				goto error;
10104 			new_triggers.patterns[i].pkt_offset = pkt_offset;
10105 
10106 			mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10107 			if (!mask_pat) {
10108 				err = -ENOMEM;
10109 				goto error;
10110 			}
10111 			new_triggers.patterns[i].mask = mask_pat;
10112 			memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10113 			       mask_len);
10114 			mask_pat += mask_len;
10115 			new_triggers.patterns[i].pattern = mask_pat;
10116 			new_triggers.patterns[i].pattern_len = pat_len;
10117 			memcpy(mask_pat,
10118 			       nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10119 			       pat_len);
10120 			i++;
10121 		}
10122 	}
10123 
10124 	if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10125 		regular = true;
10126 		err = nl80211_parse_wowlan_tcp(
10127 			rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10128 			&new_triggers);
10129 		if (err)
10130 			goto error;
10131 	}
10132 
10133 	if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10134 		regular = true;
10135 		err = nl80211_parse_wowlan_nd(
10136 			rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10137 			&new_triggers);
10138 		if (err)
10139 			goto error;
10140 	}
10141 
10142 	/* The 'any' trigger means the device continues operating more or less
10143 	 * as in its normal operation mode and wakes up the host on most of the
10144 	 * normal interrupts (like packet RX, ...)
10145 	 * It therefore makes little sense to combine with the more constrained
10146 	 * wakeup trigger modes.
10147 	 */
10148 	if (new_triggers.any && regular) {
10149 		err = -EINVAL;
10150 		goto error;
10151 	}
10152 
10153 	ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10154 	if (!ntrig) {
10155 		err = -ENOMEM;
10156 		goto error;
10157 	}
10158 	cfg80211_rdev_free_wowlan(rdev);
10159 	rdev->wiphy.wowlan_config = ntrig;
10160 
10161  set_wakeup:
10162 	if (rdev->ops->set_wakeup &&
10163 	    prev_enabled != !!rdev->wiphy.wowlan_config)
10164 		rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10165 
10166 	return 0;
10167  error:
10168 	for (i = 0; i < new_triggers.n_patterns; i++)
10169 		kfree(new_triggers.patterns[i].mask);
10170 	kfree(new_triggers.patterns);
10171 	if (new_triggers.tcp && new_triggers.tcp->sock)
10172 		sock_release(new_triggers.tcp->sock);
10173 	kfree(new_triggers.tcp);
10174 	kfree(new_triggers.nd_config);
10175 	return err;
10176 }
10177 #endif
10178 
10179 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10180 				       struct cfg80211_registered_device *rdev)
10181 {
10182 	struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10183 	int i, j, pat_len;
10184 	struct cfg80211_coalesce_rules *rule;
10185 
10186 	if (!rdev->coalesce->n_rules)
10187 		return 0;
10188 
10189 	nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10190 	if (!nl_rules)
10191 		return -ENOBUFS;
10192 
10193 	for (i = 0; i < rdev->coalesce->n_rules; i++) {
10194 		nl_rule = nla_nest_start(msg, i + 1);
10195 		if (!nl_rule)
10196 			return -ENOBUFS;
10197 
10198 		rule = &rdev->coalesce->rules[i];
10199 		if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10200 				rule->delay))
10201 			return -ENOBUFS;
10202 
10203 		if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10204 				rule->condition))
10205 			return -ENOBUFS;
10206 
10207 		nl_pats = nla_nest_start(msg,
10208 				NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10209 		if (!nl_pats)
10210 			return -ENOBUFS;
10211 
10212 		for (j = 0; j < rule->n_patterns; j++) {
10213 			nl_pat = nla_nest_start(msg, j + 1);
10214 			if (!nl_pat)
10215 				return -ENOBUFS;
10216 			pat_len = rule->patterns[j].pattern_len;
10217 			if (nla_put(msg, NL80211_PKTPAT_MASK,
10218 				    DIV_ROUND_UP(pat_len, 8),
10219 				    rule->patterns[j].mask) ||
10220 			    nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10221 				    rule->patterns[j].pattern) ||
10222 			    nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10223 					rule->patterns[j].pkt_offset))
10224 				return -ENOBUFS;
10225 			nla_nest_end(msg, nl_pat);
10226 		}
10227 		nla_nest_end(msg, nl_pats);
10228 		nla_nest_end(msg, nl_rule);
10229 	}
10230 	nla_nest_end(msg, nl_rules);
10231 
10232 	return 0;
10233 }
10234 
10235 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10236 {
10237 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10238 	struct sk_buff *msg;
10239 	void *hdr;
10240 
10241 	if (!rdev->wiphy.coalesce)
10242 		return -EOPNOTSUPP;
10243 
10244 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10245 	if (!msg)
10246 		return -ENOMEM;
10247 
10248 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10249 			     NL80211_CMD_GET_COALESCE);
10250 	if (!hdr)
10251 		goto nla_put_failure;
10252 
10253 	if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10254 		goto nla_put_failure;
10255 
10256 	genlmsg_end(msg, hdr);
10257 	return genlmsg_reply(msg, info);
10258 
10259 nla_put_failure:
10260 	nlmsg_free(msg);
10261 	return -ENOBUFS;
10262 }
10263 
10264 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10265 {
10266 	struct cfg80211_coalesce *coalesce = rdev->coalesce;
10267 	int i, j;
10268 	struct cfg80211_coalesce_rules *rule;
10269 
10270 	if (!coalesce)
10271 		return;
10272 
10273 	for (i = 0; i < coalesce->n_rules; i++) {
10274 		rule = &coalesce->rules[i];
10275 		for (j = 0; j < rule->n_patterns; j++)
10276 			kfree(rule->patterns[j].mask);
10277 		kfree(rule->patterns);
10278 	}
10279 	kfree(coalesce->rules);
10280 	kfree(coalesce);
10281 	rdev->coalesce = NULL;
10282 }
10283 
10284 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10285 				       struct nlattr *rule,
10286 				       struct cfg80211_coalesce_rules *new_rule)
10287 {
10288 	int err, i;
10289 	const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10290 	struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10291 	int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10292 	struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10293 
10294 	err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10295 			       nl80211_coalesce_policy);
10296 	if (err)
10297 		return err;
10298 
10299 	if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10300 		new_rule->delay =
10301 			nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10302 	if (new_rule->delay > coalesce->max_delay)
10303 		return -EINVAL;
10304 
10305 	if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10306 		new_rule->condition =
10307 			nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10308 	if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10309 	    new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10310 		return -EINVAL;
10311 
10312 	if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10313 		return -EINVAL;
10314 
10315 	nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10316 			    rem)
10317 		n_patterns++;
10318 	if (n_patterns > coalesce->n_patterns)
10319 		return -EINVAL;
10320 
10321 	new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10322 				     GFP_KERNEL);
10323 	if (!new_rule->patterns)
10324 		return -ENOMEM;
10325 
10326 	new_rule->n_patterns = n_patterns;
10327 	i = 0;
10328 
10329 	nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10330 			    rem) {
10331 		u8 *mask_pat;
10332 
10333 		nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL);
10334 		if (!pat_tb[NL80211_PKTPAT_MASK] ||
10335 		    !pat_tb[NL80211_PKTPAT_PATTERN])
10336 			return -EINVAL;
10337 		pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10338 		mask_len = DIV_ROUND_UP(pat_len, 8);
10339 		if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10340 			return -EINVAL;
10341 		if (pat_len > coalesce->pattern_max_len ||
10342 		    pat_len < coalesce->pattern_min_len)
10343 			return -EINVAL;
10344 
10345 		if (!pat_tb[NL80211_PKTPAT_OFFSET])
10346 			pkt_offset = 0;
10347 		else
10348 			pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10349 		if (pkt_offset > coalesce->max_pkt_offset)
10350 			return -EINVAL;
10351 		new_rule->patterns[i].pkt_offset = pkt_offset;
10352 
10353 		mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10354 		if (!mask_pat)
10355 			return -ENOMEM;
10356 
10357 		new_rule->patterns[i].mask = mask_pat;
10358 		memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10359 		       mask_len);
10360 
10361 		mask_pat += mask_len;
10362 		new_rule->patterns[i].pattern = mask_pat;
10363 		new_rule->patterns[i].pattern_len = pat_len;
10364 		memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10365 		       pat_len);
10366 		i++;
10367 	}
10368 
10369 	return 0;
10370 }
10371 
10372 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10373 {
10374 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10375 	const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10376 	struct cfg80211_coalesce new_coalesce = {};
10377 	struct cfg80211_coalesce *n_coalesce;
10378 	int err, rem_rule, n_rules = 0, i, j;
10379 	struct nlattr *rule;
10380 	struct cfg80211_coalesce_rules *tmp_rule;
10381 
10382 	if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10383 		return -EOPNOTSUPP;
10384 
10385 	if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10386 		cfg80211_rdev_free_coalesce(rdev);
10387 		rdev_set_coalesce(rdev, NULL);
10388 		return 0;
10389 	}
10390 
10391 	nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10392 			    rem_rule)
10393 		n_rules++;
10394 	if (n_rules > coalesce->n_rules)
10395 		return -EINVAL;
10396 
10397 	new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10398 				     GFP_KERNEL);
10399 	if (!new_coalesce.rules)
10400 		return -ENOMEM;
10401 
10402 	new_coalesce.n_rules = n_rules;
10403 	i = 0;
10404 
10405 	nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10406 			    rem_rule) {
10407 		err = nl80211_parse_coalesce_rule(rdev, rule,
10408 						  &new_coalesce.rules[i]);
10409 		if (err)
10410 			goto error;
10411 
10412 		i++;
10413 	}
10414 
10415 	err = rdev_set_coalesce(rdev, &new_coalesce);
10416 	if (err)
10417 		goto error;
10418 
10419 	n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10420 	if (!n_coalesce) {
10421 		err = -ENOMEM;
10422 		goto error;
10423 	}
10424 	cfg80211_rdev_free_coalesce(rdev);
10425 	rdev->coalesce = n_coalesce;
10426 
10427 	return 0;
10428 error:
10429 	for (i = 0; i < new_coalesce.n_rules; i++) {
10430 		tmp_rule = &new_coalesce.rules[i];
10431 		for (j = 0; j < tmp_rule->n_patterns; j++)
10432 			kfree(tmp_rule->patterns[j].mask);
10433 		kfree(tmp_rule->patterns);
10434 	}
10435 	kfree(new_coalesce.rules);
10436 
10437 	return err;
10438 }
10439 
10440 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10441 {
10442 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10443 	struct net_device *dev = info->user_ptr[1];
10444 	struct wireless_dev *wdev = dev->ieee80211_ptr;
10445 	struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10446 	struct cfg80211_gtk_rekey_data rekey_data;
10447 	int err;
10448 
10449 	if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10450 		return -EINVAL;
10451 
10452 	err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10453 			       info->attrs[NL80211_ATTR_REKEY_DATA],
10454 			       nl80211_rekey_policy);
10455 	if (err)
10456 		return err;
10457 
10458 	if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10459 		return -ERANGE;
10460 	if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10461 		return -ERANGE;
10462 	if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10463 		return -ERANGE;
10464 
10465 	rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10466 	rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10467 	rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10468 
10469 	wdev_lock(wdev);
10470 	if (!wdev->current_bss) {
10471 		err = -ENOTCONN;
10472 		goto out;
10473 	}
10474 
10475 	if (!rdev->ops->set_rekey_data) {
10476 		err = -EOPNOTSUPP;
10477 		goto out;
10478 	}
10479 
10480 	err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10481  out:
10482 	wdev_unlock(wdev);
10483 	return err;
10484 }
10485 
10486 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10487 					     struct genl_info *info)
10488 {
10489 	struct net_device *dev = info->user_ptr[1];
10490 	struct wireless_dev *wdev = dev->ieee80211_ptr;
10491 
10492 	if (wdev->iftype != NL80211_IFTYPE_AP &&
10493 	    wdev->iftype != NL80211_IFTYPE_P2P_GO)
10494 		return -EINVAL;
10495 
10496 	if (wdev->ap_unexpected_nlportid)
10497 		return -EBUSY;
10498 
10499 	wdev->ap_unexpected_nlportid = info->snd_portid;
10500 	return 0;
10501 }
10502 
10503 static int nl80211_probe_client(struct sk_buff *skb,
10504 				struct genl_info *info)
10505 {
10506 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10507 	struct net_device *dev = info->user_ptr[1];
10508 	struct wireless_dev *wdev = dev->ieee80211_ptr;
10509 	struct sk_buff *msg;
10510 	void *hdr;
10511 	const u8 *addr;
10512 	u64 cookie;
10513 	int err;
10514 
10515 	if (wdev->iftype != NL80211_IFTYPE_AP &&
10516 	    wdev->iftype != NL80211_IFTYPE_P2P_GO)
10517 		return -EOPNOTSUPP;
10518 
10519 	if (!info->attrs[NL80211_ATTR_MAC])
10520 		return -EINVAL;
10521 
10522 	if (!rdev->ops->probe_client)
10523 		return -EOPNOTSUPP;
10524 
10525 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10526 	if (!msg)
10527 		return -ENOMEM;
10528 
10529 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10530 			     NL80211_CMD_PROBE_CLIENT);
10531 	if (!hdr) {
10532 		err = -ENOBUFS;
10533 		goto free_msg;
10534 	}
10535 
10536 	addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10537 
10538 	err = rdev_probe_client(rdev, dev, addr, &cookie);
10539 	if (err)
10540 		goto free_msg;
10541 
10542 	if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10543 			      NL80211_ATTR_PAD))
10544 		goto nla_put_failure;
10545 
10546 	genlmsg_end(msg, hdr);
10547 
10548 	return genlmsg_reply(msg, info);
10549 
10550  nla_put_failure:
10551 	err = -ENOBUFS;
10552  free_msg:
10553 	nlmsg_free(msg);
10554 	return err;
10555 }
10556 
10557 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10558 {
10559 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10560 	struct cfg80211_beacon_registration *reg, *nreg;
10561 	int rv;
10562 
10563 	if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10564 		return -EOPNOTSUPP;
10565 
10566 	nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10567 	if (!nreg)
10568 		return -ENOMEM;
10569 
10570 	/* First, check if already registered. */
10571 	spin_lock_bh(&rdev->beacon_registrations_lock);
10572 	list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10573 		if (reg->nlportid == info->snd_portid) {
10574 			rv = -EALREADY;
10575 			goto out_err;
10576 		}
10577 	}
10578 	/* Add it to the list */
10579 	nreg->nlportid = info->snd_portid;
10580 	list_add(&nreg->list, &rdev->beacon_registrations);
10581 
10582 	spin_unlock_bh(&rdev->beacon_registrations_lock);
10583 
10584 	return 0;
10585 out_err:
10586 	spin_unlock_bh(&rdev->beacon_registrations_lock);
10587 	kfree(nreg);
10588 	return rv;
10589 }
10590 
10591 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10592 {
10593 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10594 	struct wireless_dev *wdev = info->user_ptr[1];
10595 	int err;
10596 
10597 	if (!rdev->ops->start_p2p_device)
10598 		return -EOPNOTSUPP;
10599 
10600 	if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10601 		return -EOPNOTSUPP;
10602 
10603 	if (wdev_running(wdev))
10604 		return 0;
10605 
10606 	if (rfkill_blocked(rdev->rfkill))
10607 		return -ERFKILL;
10608 
10609 	err = rdev_start_p2p_device(rdev, wdev);
10610 	if (err)
10611 		return err;
10612 
10613 	wdev->is_running = true;
10614 	rdev->opencount++;
10615 
10616 	return 0;
10617 }
10618 
10619 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10620 {
10621 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10622 	struct wireless_dev *wdev = info->user_ptr[1];
10623 
10624 	if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10625 		return -EOPNOTSUPP;
10626 
10627 	if (!rdev->ops->stop_p2p_device)
10628 		return -EOPNOTSUPP;
10629 
10630 	cfg80211_stop_p2p_device(rdev, wdev);
10631 
10632 	return 0;
10633 }
10634 
10635 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
10636 {
10637 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10638 	struct wireless_dev *wdev = info->user_ptr[1];
10639 	struct cfg80211_nan_conf conf = {};
10640 	int err;
10641 
10642 	if (wdev->iftype != NL80211_IFTYPE_NAN)
10643 		return -EOPNOTSUPP;
10644 
10645 	if (wdev_running(wdev))
10646 		return -EEXIST;
10647 
10648 	if (rfkill_blocked(rdev->rfkill))
10649 		return -ERFKILL;
10650 
10651 	if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
10652 		return -EINVAL;
10653 
10654 	if (!info->attrs[NL80211_ATTR_NAN_DUAL])
10655 		return -EINVAL;
10656 
10657 	conf.master_pref =
10658 		nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
10659 	if (!conf.master_pref)
10660 		return -EINVAL;
10661 
10662 	conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
10663 
10664 	err = rdev_start_nan(rdev, wdev, &conf);
10665 	if (err)
10666 		return err;
10667 
10668 	wdev->is_running = true;
10669 	rdev->opencount++;
10670 
10671 	return 0;
10672 }
10673 
10674 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
10675 {
10676 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10677 	struct wireless_dev *wdev = info->user_ptr[1];
10678 
10679 	if (wdev->iftype != NL80211_IFTYPE_NAN)
10680 		return -EOPNOTSUPP;
10681 
10682 	cfg80211_stop_nan(rdev, wdev);
10683 
10684 	return 0;
10685 }
10686 
10687 static int validate_nan_filter(struct nlattr *filter_attr)
10688 {
10689 	struct nlattr *attr;
10690 	int len = 0, n_entries = 0, rem;
10691 
10692 	nla_for_each_nested(attr, filter_attr, rem) {
10693 		len += nla_len(attr);
10694 		n_entries++;
10695 	}
10696 
10697 	if (len >= U8_MAX)
10698 		return -EINVAL;
10699 
10700 	return n_entries;
10701 }
10702 
10703 static int handle_nan_filter(struct nlattr *attr_filter,
10704 			     struct cfg80211_nan_func *func,
10705 			     bool tx)
10706 {
10707 	struct nlattr *attr;
10708 	int n_entries, rem, i;
10709 	struct cfg80211_nan_func_filter *filter;
10710 
10711 	n_entries = validate_nan_filter(attr_filter);
10712 	if (n_entries < 0)
10713 		return n_entries;
10714 
10715 	BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
10716 
10717 	filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
10718 	if (!filter)
10719 		return -ENOMEM;
10720 
10721 	i = 0;
10722 	nla_for_each_nested(attr, attr_filter, rem) {
10723 		filter[i].filter = nla_memdup(attr, GFP_KERNEL);
10724 		filter[i].len = nla_len(attr);
10725 		i++;
10726 	}
10727 	if (tx) {
10728 		func->num_tx_filters = n_entries;
10729 		func->tx_filters = filter;
10730 	} else {
10731 		func->num_rx_filters = n_entries;
10732 		func->rx_filters = filter;
10733 	}
10734 
10735 	return 0;
10736 }
10737 
10738 static int nl80211_nan_add_func(struct sk_buff *skb,
10739 				struct genl_info *info)
10740 {
10741 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10742 	struct wireless_dev *wdev = info->user_ptr[1];
10743 	struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
10744 	struct cfg80211_nan_func *func;
10745 	struct sk_buff *msg = NULL;
10746 	void *hdr = NULL;
10747 	int err = 0;
10748 
10749 	if (wdev->iftype != NL80211_IFTYPE_NAN)
10750 		return -EOPNOTSUPP;
10751 
10752 	if (!wdev_running(wdev))
10753 		return -ENOTCONN;
10754 
10755 	if (!info->attrs[NL80211_ATTR_NAN_FUNC])
10756 		return -EINVAL;
10757 
10758 	if (wdev->owner_nlportid &&
10759 	    wdev->owner_nlportid != info->snd_portid)
10760 		return -ENOTCONN;
10761 
10762 	err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
10763 			       info->attrs[NL80211_ATTR_NAN_FUNC],
10764 			       nl80211_nan_func_policy);
10765 	if (err)
10766 		return err;
10767 
10768 	func = kzalloc(sizeof(*func), GFP_KERNEL);
10769 	if (!func)
10770 		return -ENOMEM;
10771 
10772 	func->cookie = wdev->wiphy->cookie_counter++;
10773 
10774 	if (!tb[NL80211_NAN_FUNC_TYPE] ||
10775 	    nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
10776 		err = -EINVAL;
10777 		goto out;
10778 	}
10779 
10780 
10781 	func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
10782 
10783 	if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
10784 		err = -EINVAL;
10785 		goto out;
10786 	}
10787 
10788 	memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
10789 	       sizeof(func->service_id));
10790 
10791 	func->close_range =
10792 		nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
10793 
10794 	if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
10795 		func->serv_spec_info_len =
10796 			nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
10797 		func->serv_spec_info =
10798 			kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
10799 				func->serv_spec_info_len,
10800 				GFP_KERNEL);
10801 		if (!func->serv_spec_info) {
10802 			err = -ENOMEM;
10803 			goto out;
10804 		}
10805 	}
10806 
10807 	if (tb[NL80211_NAN_FUNC_TTL])
10808 		func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
10809 
10810 	switch (func->type) {
10811 	case NL80211_NAN_FUNC_PUBLISH:
10812 		if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
10813 			err = -EINVAL;
10814 			goto out;
10815 		}
10816 
10817 		func->publish_type =
10818 			nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
10819 		func->publish_bcast =
10820 			nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
10821 
10822 		if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
10823 			func->publish_bcast) {
10824 			err = -EINVAL;
10825 			goto out;
10826 		}
10827 		break;
10828 	case NL80211_NAN_FUNC_SUBSCRIBE:
10829 		func->subscribe_active =
10830 			nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
10831 		break;
10832 	case NL80211_NAN_FUNC_FOLLOW_UP:
10833 		if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
10834 		    !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
10835 			err = -EINVAL;
10836 			goto out;
10837 		}
10838 
10839 		func->followup_id =
10840 			nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
10841 		func->followup_reqid =
10842 			nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
10843 		memcpy(func->followup_dest.addr,
10844 		       nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
10845 		       sizeof(func->followup_dest.addr));
10846 		if (func->ttl) {
10847 			err = -EINVAL;
10848 			goto out;
10849 		}
10850 		break;
10851 	default:
10852 		err = -EINVAL;
10853 		goto out;
10854 	}
10855 
10856 	if (tb[NL80211_NAN_FUNC_SRF]) {
10857 		struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
10858 
10859 		err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
10860 				       tb[NL80211_NAN_FUNC_SRF],
10861 				       nl80211_nan_srf_policy);
10862 		if (err)
10863 			goto out;
10864 
10865 		func->srf_include =
10866 			nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
10867 
10868 		if (srf_tb[NL80211_NAN_SRF_BF]) {
10869 			if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
10870 			    !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
10871 				err = -EINVAL;
10872 				goto out;
10873 			}
10874 
10875 			func->srf_bf_len =
10876 				nla_len(srf_tb[NL80211_NAN_SRF_BF]);
10877 			func->srf_bf =
10878 				kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
10879 					func->srf_bf_len, GFP_KERNEL);
10880 			if (!func->srf_bf) {
10881 				err = -ENOMEM;
10882 				goto out;
10883 			}
10884 
10885 			func->srf_bf_idx =
10886 				nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
10887 		} else {
10888 			struct nlattr *attr, *mac_attr =
10889 				srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
10890 			int n_entries, rem, i = 0;
10891 
10892 			if (!mac_attr) {
10893 				err = -EINVAL;
10894 				goto out;
10895 			}
10896 
10897 			n_entries = validate_acl_mac_addrs(mac_attr);
10898 			if (n_entries <= 0) {
10899 				err = -EINVAL;
10900 				goto out;
10901 			}
10902 
10903 			func->srf_num_macs = n_entries;
10904 			func->srf_macs =
10905 				kzalloc(sizeof(*func->srf_macs) * n_entries,
10906 					GFP_KERNEL);
10907 			if (!func->srf_macs) {
10908 				err = -ENOMEM;
10909 				goto out;
10910 			}
10911 
10912 			nla_for_each_nested(attr, mac_attr, rem)
10913 				memcpy(func->srf_macs[i++].addr, nla_data(attr),
10914 				       sizeof(*func->srf_macs));
10915 		}
10916 	}
10917 
10918 	if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
10919 		err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
10920 					func, true);
10921 		if (err)
10922 			goto out;
10923 	}
10924 
10925 	if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
10926 		err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
10927 					func, false);
10928 		if (err)
10929 			goto out;
10930 	}
10931 
10932 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10933 	if (!msg) {
10934 		err = -ENOMEM;
10935 		goto out;
10936 	}
10937 
10938 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10939 			     NL80211_CMD_ADD_NAN_FUNCTION);
10940 	/* This can't really happen - we just allocated 4KB */
10941 	if (WARN_ON(!hdr)) {
10942 		err = -ENOMEM;
10943 		goto out;
10944 	}
10945 
10946 	err = rdev_add_nan_func(rdev, wdev, func);
10947 out:
10948 	if (err < 0) {
10949 		cfg80211_free_nan_func(func);
10950 		nlmsg_free(msg);
10951 		return err;
10952 	}
10953 
10954 	/* propagate the instance id and cookie to userspace  */
10955 	if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
10956 			      NL80211_ATTR_PAD))
10957 		goto nla_put_failure;
10958 
10959 	func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
10960 	if (!func_attr)
10961 		goto nla_put_failure;
10962 
10963 	if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
10964 		       func->instance_id))
10965 		goto nla_put_failure;
10966 
10967 	nla_nest_end(msg, func_attr);
10968 
10969 	genlmsg_end(msg, hdr);
10970 	return genlmsg_reply(msg, info);
10971 
10972 nla_put_failure:
10973 	nlmsg_free(msg);
10974 	return -ENOBUFS;
10975 }
10976 
10977 static int nl80211_nan_del_func(struct sk_buff *skb,
10978 			       struct genl_info *info)
10979 {
10980 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
10981 	struct wireless_dev *wdev = info->user_ptr[1];
10982 	u64 cookie;
10983 
10984 	if (wdev->iftype != NL80211_IFTYPE_NAN)
10985 		return -EOPNOTSUPP;
10986 
10987 	if (!wdev_running(wdev))
10988 		return -ENOTCONN;
10989 
10990 	if (!info->attrs[NL80211_ATTR_COOKIE])
10991 		return -EINVAL;
10992 
10993 	if (wdev->owner_nlportid &&
10994 	    wdev->owner_nlportid != info->snd_portid)
10995 		return -ENOTCONN;
10996 
10997 	cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10998 
10999 	rdev_del_nan_func(rdev, wdev, cookie);
11000 
11001 	return 0;
11002 }
11003 
11004 static int nl80211_nan_change_config(struct sk_buff *skb,
11005 				     struct genl_info *info)
11006 {
11007 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11008 	struct wireless_dev *wdev = info->user_ptr[1];
11009 	struct cfg80211_nan_conf conf = {};
11010 	u32 changed = 0;
11011 
11012 	if (wdev->iftype != NL80211_IFTYPE_NAN)
11013 		return -EOPNOTSUPP;
11014 
11015 	if (!wdev_running(wdev))
11016 		return -ENOTCONN;
11017 
11018 	if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11019 		conf.master_pref =
11020 			nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11021 		if (conf.master_pref <= 1 || conf.master_pref == 255)
11022 			return -EINVAL;
11023 
11024 		changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11025 	}
11026 
11027 	if (info->attrs[NL80211_ATTR_NAN_DUAL]) {
11028 		conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
11029 		changed |= CFG80211_NAN_CONF_CHANGED_DUAL;
11030 	}
11031 
11032 	if (!changed)
11033 		return -EINVAL;
11034 
11035 	return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11036 }
11037 
11038 void cfg80211_nan_match(struct wireless_dev *wdev,
11039 			struct cfg80211_nan_match_params *match, gfp_t gfp)
11040 {
11041 	struct wiphy *wiphy = wdev->wiphy;
11042 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11043 	struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11044 	struct sk_buff *msg;
11045 	void *hdr;
11046 
11047 	if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11048 		return;
11049 
11050 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11051 	if (!msg)
11052 		return;
11053 
11054 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11055 	if (!hdr) {
11056 		nlmsg_free(msg);
11057 		return;
11058 	}
11059 
11060 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11061 	    (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11062 					 wdev->netdev->ifindex)) ||
11063 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11064 			      NL80211_ATTR_PAD))
11065 		goto nla_put_failure;
11066 
11067 	if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11068 			      NL80211_ATTR_PAD) ||
11069 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11070 		goto nla_put_failure;
11071 
11072 	match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11073 	if (!match_attr)
11074 		goto nla_put_failure;
11075 
11076 	local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11077 	if (!local_func_attr)
11078 		goto nla_put_failure;
11079 
11080 	if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11081 		goto nla_put_failure;
11082 
11083 	nla_nest_end(msg, local_func_attr);
11084 
11085 	peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11086 	if (!peer_func_attr)
11087 		goto nla_put_failure;
11088 
11089 	if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11090 	    nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11091 		goto nla_put_failure;
11092 
11093 	if (match->info && match->info_len &&
11094 	    nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11095 		    match->info))
11096 		goto nla_put_failure;
11097 
11098 	nla_nest_end(msg, peer_func_attr);
11099 	nla_nest_end(msg, match_attr);
11100 	genlmsg_end(msg, hdr);
11101 
11102 	if (!wdev->owner_nlportid)
11103 		genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11104 					msg, 0, NL80211_MCGRP_NAN, gfp);
11105 	else
11106 		genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11107 				wdev->owner_nlportid);
11108 
11109 	return;
11110 
11111 nla_put_failure:
11112 	nlmsg_free(msg);
11113 }
11114 EXPORT_SYMBOL(cfg80211_nan_match);
11115 
11116 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11117 				  u8 inst_id,
11118 				  enum nl80211_nan_func_term_reason reason,
11119 				  u64 cookie, gfp_t gfp)
11120 {
11121 	struct wiphy *wiphy = wdev->wiphy;
11122 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11123 	struct sk_buff *msg;
11124 	struct nlattr *func_attr;
11125 	void *hdr;
11126 
11127 	if (WARN_ON(!inst_id))
11128 		return;
11129 
11130 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11131 	if (!msg)
11132 		return;
11133 
11134 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11135 	if (!hdr) {
11136 		nlmsg_free(msg);
11137 		return;
11138 	}
11139 
11140 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11141 	    (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11142 					 wdev->netdev->ifindex)) ||
11143 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11144 			      NL80211_ATTR_PAD))
11145 		goto nla_put_failure;
11146 
11147 	if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11148 			      NL80211_ATTR_PAD))
11149 		goto nla_put_failure;
11150 
11151 	func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11152 	if (!func_attr)
11153 		goto nla_put_failure;
11154 
11155 	if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11156 	    nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11157 		goto nla_put_failure;
11158 
11159 	nla_nest_end(msg, func_attr);
11160 	genlmsg_end(msg, hdr);
11161 
11162 	if (!wdev->owner_nlportid)
11163 		genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11164 					msg, 0, NL80211_MCGRP_NAN, gfp);
11165 	else
11166 		genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11167 				wdev->owner_nlportid);
11168 
11169 	return;
11170 
11171 nla_put_failure:
11172 	nlmsg_free(msg);
11173 }
11174 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11175 
11176 static int nl80211_get_protocol_features(struct sk_buff *skb,
11177 					 struct genl_info *info)
11178 {
11179 	void *hdr;
11180 	struct sk_buff *msg;
11181 
11182 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11183 	if (!msg)
11184 		return -ENOMEM;
11185 
11186 	hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11187 			     NL80211_CMD_GET_PROTOCOL_FEATURES);
11188 	if (!hdr)
11189 		goto nla_put_failure;
11190 
11191 	if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11192 			NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11193 		goto nla_put_failure;
11194 
11195 	genlmsg_end(msg, hdr);
11196 	return genlmsg_reply(msg, info);
11197 
11198  nla_put_failure:
11199 	kfree_skb(msg);
11200 	return -ENOBUFS;
11201 }
11202 
11203 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11204 {
11205 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11206 	struct cfg80211_update_ft_ies_params ft_params;
11207 	struct net_device *dev = info->user_ptr[1];
11208 
11209 	if (!rdev->ops->update_ft_ies)
11210 		return -EOPNOTSUPP;
11211 
11212 	if (!info->attrs[NL80211_ATTR_MDID] ||
11213 	    !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11214 		return -EINVAL;
11215 
11216 	memset(&ft_params, 0, sizeof(ft_params));
11217 	ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11218 	ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11219 	ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11220 
11221 	return rdev_update_ft_ies(rdev, dev, &ft_params);
11222 }
11223 
11224 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11225 				       struct genl_info *info)
11226 {
11227 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11228 	struct wireless_dev *wdev = info->user_ptr[1];
11229 	enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11230 	u16 duration;
11231 	int ret;
11232 
11233 	if (!rdev->ops->crit_proto_start)
11234 		return -EOPNOTSUPP;
11235 
11236 	if (WARN_ON(!rdev->ops->crit_proto_stop))
11237 		return -EINVAL;
11238 
11239 	if (rdev->crit_proto_nlportid)
11240 		return -EBUSY;
11241 
11242 	/* determine protocol if provided */
11243 	if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11244 		proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11245 
11246 	if (proto >= NUM_NL80211_CRIT_PROTO)
11247 		return -EINVAL;
11248 
11249 	/* timeout must be provided */
11250 	if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11251 		return -EINVAL;
11252 
11253 	duration =
11254 		nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11255 
11256 	if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11257 		return -ERANGE;
11258 
11259 	ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11260 	if (!ret)
11261 		rdev->crit_proto_nlportid = info->snd_portid;
11262 
11263 	return ret;
11264 }
11265 
11266 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11267 				      struct genl_info *info)
11268 {
11269 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11270 	struct wireless_dev *wdev = info->user_ptr[1];
11271 
11272 	if (!rdev->ops->crit_proto_stop)
11273 		return -EOPNOTSUPP;
11274 
11275 	if (rdev->crit_proto_nlportid) {
11276 		rdev->crit_proto_nlportid = 0;
11277 		rdev_crit_proto_stop(rdev, wdev);
11278 	}
11279 	return 0;
11280 }
11281 
11282 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11283 {
11284 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11285 	struct wireless_dev *wdev =
11286 		__cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11287 	int i, err;
11288 	u32 vid, subcmd;
11289 
11290 	if (!rdev->wiphy.vendor_commands)
11291 		return -EOPNOTSUPP;
11292 
11293 	if (IS_ERR(wdev)) {
11294 		err = PTR_ERR(wdev);
11295 		if (err != -EINVAL)
11296 			return err;
11297 		wdev = NULL;
11298 	} else if (wdev->wiphy != &rdev->wiphy) {
11299 		return -EINVAL;
11300 	}
11301 
11302 	if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11303 	    !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11304 		return -EINVAL;
11305 
11306 	vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11307 	subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11308 	for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11309 		const struct wiphy_vendor_command *vcmd;
11310 		void *data = NULL;
11311 		int len = 0;
11312 
11313 		vcmd = &rdev->wiphy.vendor_commands[i];
11314 
11315 		if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11316 			continue;
11317 
11318 		if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11319 				   WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11320 			if (!wdev)
11321 				return -EINVAL;
11322 			if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11323 			    !wdev->netdev)
11324 				return -EINVAL;
11325 
11326 			if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11327 				if (!wdev_running(wdev))
11328 					return -ENETDOWN;
11329 			}
11330 
11331 			if (!vcmd->doit)
11332 				return -EOPNOTSUPP;
11333 		} else {
11334 			wdev = NULL;
11335 		}
11336 
11337 		if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11338 			data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11339 			len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11340 		}
11341 
11342 		rdev->cur_cmd_info = info;
11343 		err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11344 							  data, len);
11345 		rdev->cur_cmd_info = NULL;
11346 		return err;
11347 	}
11348 
11349 	return -EOPNOTSUPP;
11350 }
11351 
11352 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11353 				       struct netlink_callback *cb,
11354 				       struct cfg80211_registered_device **rdev,
11355 				       struct wireless_dev **wdev)
11356 {
11357 	struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11358 	u32 vid, subcmd;
11359 	unsigned int i;
11360 	int vcmd_idx = -1;
11361 	int err;
11362 	void *data = NULL;
11363 	unsigned int data_len = 0;
11364 
11365 	rtnl_lock();
11366 
11367 	if (cb->args[0]) {
11368 		/* subtract the 1 again here */
11369 		struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11370 		struct wireless_dev *tmp;
11371 
11372 		if (!wiphy) {
11373 			err = -ENODEV;
11374 			goto out_unlock;
11375 		}
11376 		*rdev = wiphy_to_rdev(wiphy);
11377 		*wdev = NULL;
11378 
11379 		if (cb->args[1]) {
11380 			list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11381 				if (tmp->identifier == cb->args[1] - 1) {
11382 					*wdev = tmp;
11383 					break;
11384 				}
11385 			}
11386 		}
11387 
11388 		/* keep rtnl locked in successful case */
11389 		return 0;
11390 	}
11391 
11392 	err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
11393 			  attrbuf, nl80211_fam.maxattr, nl80211_policy);
11394 	if (err)
11395 		goto out_unlock;
11396 
11397 	if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11398 	    !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
11399 		err = -EINVAL;
11400 		goto out_unlock;
11401 	}
11402 
11403 	*wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11404 	if (IS_ERR(*wdev))
11405 		*wdev = NULL;
11406 
11407 	*rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11408 	if (IS_ERR(*rdev)) {
11409 		err = PTR_ERR(*rdev);
11410 		goto out_unlock;
11411 	}
11412 
11413 	vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11414 	subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11415 
11416 	for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11417 		const struct wiphy_vendor_command *vcmd;
11418 
11419 		vcmd = &(*rdev)->wiphy.vendor_commands[i];
11420 
11421 		if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11422 			continue;
11423 
11424 		if (!vcmd->dumpit) {
11425 			err = -EOPNOTSUPP;
11426 			goto out_unlock;
11427 		}
11428 
11429 		vcmd_idx = i;
11430 		break;
11431 	}
11432 
11433 	if (vcmd_idx < 0) {
11434 		err = -EOPNOTSUPP;
11435 		goto out_unlock;
11436 	}
11437 
11438 	if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11439 		data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11440 		data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11441 	}
11442 
11443 	/* 0 is the first index - add 1 to parse only once */
11444 	cb->args[0] = (*rdev)->wiphy_idx + 1;
11445 	/* add 1 to know if it was NULL */
11446 	cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11447 	cb->args[2] = vcmd_idx;
11448 	cb->args[3] = (unsigned long)data;
11449 	cb->args[4] = data_len;
11450 
11451 	/* keep rtnl locked in successful case */
11452 	return 0;
11453  out_unlock:
11454 	rtnl_unlock();
11455 	return err;
11456 }
11457 
11458 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11459 				   struct netlink_callback *cb)
11460 {
11461 	struct cfg80211_registered_device *rdev;
11462 	struct wireless_dev *wdev;
11463 	unsigned int vcmd_idx;
11464 	const struct wiphy_vendor_command *vcmd;
11465 	void *data;
11466 	int data_len;
11467 	int err;
11468 	struct nlattr *vendor_data;
11469 
11470 	err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11471 	if (err)
11472 		return err;
11473 
11474 	vcmd_idx = cb->args[2];
11475 	data = (void *)cb->args[3];
11476 	data_len = cb->args[4];
11477 	vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11478 
11479 	if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11480 			   WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11481 		if (!wdev)
11482 			return -EINVAL;
11483 		if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11484 		    !wdev->netdev)
11485 			return -EINVAL;
11486 
11487 		if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11488 			if (!wdev_running(wdev))
11489 				return -ENETDOWN;
11490 		}
11491 	}
11492 
11493 	while (1) {
11494 		void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11495 					   cb->nlh->nlmsg_seq, NLM_F_MULTI,
11496 					   NL80211_CMD_VENDOR);
11497 		if (!hdr)
11498 			break;
11499 
11500 		if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11501 		    (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11502 					       wdev_id(wdev),
11503 					       NL80211_ATTR_PAD))) {
11504 			genlmsg_cancel(skb, hdr);
11505 			break;
11506 		}
11507 
11508 		vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11509 		if (!vendor_data) {
11510 			genlmsg_cancel(skb, hdr);
11511 			break;
11512 		}
11513 
11514 		err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11515 				   (unsigned long *)&cb->args[5]);
11516 		nla_nest_end(skb, vendor_data);
11517 
11518 		if (err == -ENOBUFS || err == -ENOENT) {
11519 			genlmsg_cancel(skb, hdr);
11520 			break;
11521 		} else if (err) {
11522 			genlmsg_cancel(skb, hdr);
11523 			goto out;
11524 		}
11525 
11526 		genlmsg_end(skb, hdr);
11527 	}
11528 
11529 	err = skb->len;
11530  out:
11531 	rtnl_unlock();
11532 	return err;
11533 }
11534 
11535 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11536 					   enum nl80211_commands cmd,
11537 					   enum nl80211_attrs attr,
11538 					   int approxlen)
11539 {
11540 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11541 
11542 	if (WARN_ON(!rdev->cur_cmd_info))
11543 		return NULL;
11544 
11545 	return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11546 					   rdev->cur_cmd_info->snd_portid,
11547 					   rdev->cur_cmd_info->snd_seq,
11548 					   cmd, attr, NULL, GFP_KERNEL);
11549 }
11550 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11551 
11552 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11553 {
11554 	struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11555 	void *hdr = ((void **)skb->cb)[1];
11556 	struct nlattr *data = ((void **)skb->cb)[2];
11557 
11558 	/* clear CB data for netlink core to own from now on */
11559 	memset(skb->cb, 0, sizeof(skb->cb));
11560 
11561 	if (WARN_ON(!rdev->cur_cmd_info)) {
11562 		kfree_skb(skb);
11563 		return -EINVAL;
11564 	}
11565 
11566 	nla_nest_end(skb, data);
11567 	genlmsg_end(skb, hdr);
11568 	return genlmsg_reply(skb, rdev->cur_cmd_info);
11569 }
11570 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11571 
11572 static int nl80211_set_qos_map(struct sk_buff *skb,
11573 			       struct genl_info *info)
11574 {
11575 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11576 	struct cfg80211_qos_map *qos_map = NULL;
11577 	struct net_device *dev = info->user_ptr[1];
11578 	u8 *pos, len, num_des, des_len, des;
11579 	int ret;
11580 
11581 	if (!rdev->ops->set_qos_map)
11582 		return -EOPNOTSUPP;
11583 
11584 	if (info->attrs[NL80211_ATTR_QOS_MAP]) {
11585 		pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
11586 		len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
11587 
11588 		if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
11589 		    len > IEEE80211_QOS_MAP_LEN_MAX)
11590 			return -EINVAL;
11591 
11592 		qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
11593 		if (!qos_map)
11594 			return -ENOMEM;
11595 
11596 		num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
11597 		if (num_des) {
11598 			des_len = num_des *
11599 				sizeof(struct cfg80211_dscp_exception);
11600 			memcpy(qos_map->dscp_exception, pos, des_len);
11601 			qos_map->num_des = num_des;
11602 			for (des = 0; des < num_des; des++) {
11603 				if (qos_map->dscp_exception[des].up > 7) {
11604 					kfree(qos_map);
11605 					return -EINVAL;
11606 				}
11607 			}
11608 			pos += des_len;
11609 		}
11610 		memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
11611 	}
11612 
11613 	wdev_lock(dev->ieee80211_ptr);
11614 	ret = nl80211_key_allowed(dev->ieee80211_ptr);
11615 	if (!ret)
11616 		ret = rdev_set_qos_map(rdev, dev, qos_map);
11617 	wdev_unlock(dev->ieee80211_ptr);
11618 
11619 	kfree(qos_map);
11620 	return ret;
11621 }
11622 
11623 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
11624 {
11625 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11626 	struct net_device *dev = info->user_ptr[1];
11627 	struct wireless_dev *wdev = dev->ieee80211_ptr;
11628 	const u8 *peer;
11629 	u8 tsid, up;
11630 	u16 admitted_time = 0;
11631 	int err;
11632 
11633 	if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
11634 		return -EOPNOTSUPP;
11635 
11636 	if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
11637 	    !info->attrs[NL80211_ATTR_USER_PRIO])
11638 		return -EINVAL;
11639 
11640 	tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11641 	if (tsid >= IEEE80211_NUM_TIDS)
11642 		return -EINVAL;
11643 
11644 	up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
11645 	if (up >= IEEE80211_NUM_UPS)
11646 		return -EINVAL;
11647 
11648 	/* WMM uses TIDs 0-7 even for TSPEC */
11649 	if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
11650 		/* TODO: handle 802.11 TSPEC/admission control
11651 		 * need more attributes for that (e.g. BA session requirement);
11652 		 * change the WMM adminssion test above to allow both then
11653 		 */
11654 		return -EINVAL;
11655 	}
11656 
11657 	peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11658 
11659 	if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
11660 		admitted_time =
11661 			nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
11662 		if (!admitted_time)
11663 			return -EINVAL;
11664 	}
11665 
11666 	wdev_lock(wdev);
11667 	switch (wdev->iftype) {
11668 	case NL80211_IFTYPE_STATION:
11669 	case NL80211_IFTYPE_P2P_CLIENT:
11670 		if (wdev->current_bss)
11671 			break;
11672 		err = -ENOTCONN;
11673 		goto out;
11674 	default:
11675 		err = -EOPNOTSUPP;
11676 		goto out;
11677 	}
11678 
11679 	err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
11680 
11681  out:
11682 	wdev_unlock(wdev);
11683 	return err;
11684 }
11685 
11686 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
11687 {
11688 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11689 	struct net_device *dev = info->user_ptr[1];
11690 	struct wireless_dev *wdev = dev->ieee80211_ptr;
11691 	const u8 *peer;
11692 	u8 tsid;
11693 	int err;
11694 
11695 	if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
11696 		return -EINVAL;
11697 
11698 	tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11699 	peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11700 
11701 	wdev_lock(wdev);
11702 	err = rdev_del_tx_ts(rdev, dev, tsid, peer);
11703 	wdev_unlock(wdev);
11704 
11705 	return err;
11706 }
11707 
11708 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
11709 				       struct genl_info *info)
11710 {
11711 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11712 	struct net_device *dev = info->user_ptr[1];
11713 	struct wireless_dev *wdev = dev->ieee80211_ptr;
11714 	struct cfg80211_chan_def chandef = {};
11715 	const u8 *addr;
11716 	u8 oper_class;
11717 	int err;
11718 
11719 	if (!rdev->ops->tdls_channel_switch ||
11720 	    !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11721 		return -EOPNOTSUPP;
11722 
11723 	switch (dev->ieee80211_ptr->iftype) {
11724 	case NL80211_IFTYPE_STATION:
11725 	case NL80211_IFTYPE_P2P_CLIENT:
11726 		break;
11727 	default:
11728 		return -EOPNOTSUPP;
11729 	}
11730 
11731 	if (!info->attrs[NL80211_ATTR_MAC] ||
11732 	    !info->attrs[NL80211_ATTR_OPER_CLASS])
11733 		return -EINVAL;
11734 
11735 	err = nl80211_parse_chandef(rdev, info, &chandef);
11736 	if (err)
11737 		return err;
11738 
11739 	/*
11740 	 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
11741 	 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
11742 	 * specification is not defined for them.
11743 	 */
11744 	if (chandef.chan->band == NL80211_BAND_2GHZ &&
11745 	    chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
11746 	    chandef.width != NL80211_CHAN_WIDTH_20)
11747 		return -EINVAL;
11748 
11749 	/* we will be active on the TDLS link */
11750 	if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
11751 					   wdev->iftype))
11752 		return -EINVAL;
11753 
11754 	/* don't allow switching to DFS channels */
11755 	if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
11756 		return -EINVAL;
11757 
11758 	addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11759 	oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
11760 
11761 	wdev_lock(wdev);
11762 	err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
11763 	wdev_unlock(wdev);
11764 
11765 	return err;
11766 }
11767 
11768 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11769 					      struct genl_info *info)
11770 {
11771 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11772 	struct net_device *dev = info->user_ptr[1];
11773 	struct wireless_dev *wdev = dev->ieee80211_ptr;
11774 	const u8 *addr;
11775 
11776 	if (!rdev->ops->tdls_channel_switch ||
11777 	    !rdev->ops->tdls_cancel_channel_switch ||
11778 	    !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11779 		return -EOPNOTSUPP;
11780 
11781 	switch (dev->ieee80211_ptr->iftype) {
11782 	case NL80211_IFTYPE_STATION:
11783 	case NL80211_IFTYPE_P2P_CLIENT:
11784 		break;
11785 	default:
11786 		return -EOPNOTSUPP;
11787 	}
11788 
11789 	if (!info->attrs[NL80211_ATTR_MAC])
11790 		return -EINVAL;
11791 
11792 	addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11793 
11794 	wdev_lock(wdev);
11795 	rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11796 	wdev_unlock(wdev);
11797 
11798 	return 0;
11799 }
11800 
11801 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
11802 					    struct genl_info *info)
11803 {
11804 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
11805 	struct net_device *dev = info->user_ptr[1];
11806 	struct wireless_dev *wdev = dev->ieee80211_ptr;
11807 	const struct nlattr *nla;
11808 	bool enabled;
11809 
11810 	if (netif_running(dev))
11811 		return -EBUSY;
11812 
11813 	if (!rdev->ops->set_multicast_to_unicast)
11814 		return -EOPNOTSUPP;
11815 
11816 	if (wdev->iftype != NL80211_IFTYPE_AP &&
11817 	    wdev->iftype != NL80211_IFTYPE_P2P_GO)
11818 		return -EOPNOTSUPP;
11819 
11820 	nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
11821 	enabled = nla_get_flag(nla);
11822 
11823 	return rdev_set_multicast_to_unicast(rdev, dev, enabled);
11824 }
11825 
11826 #define NL80211_FLAG_NEED_WIPHY		0x01
11827 #define NL80211_FLAG_NEED_NETDEV	0x02
11828 #define NL80211_FLAG_NEED_RTNL		0x04
11829 #define NL80211_FLAG_CHECK_NETDEV_UP	0x08
11830 #define NL80211_FLAG_NEED_NETDEV_UP	(NL80211_FLAG_NEED_NETDEV |\
11831 					 NL80211_FLAG_CHECK_NETDEV_UP)
11832 #define NL80211_FLAG_NEED_WDEV		0x10
11833 /* If a netdev is associated, it must be UP, P2P must be started */
11834 #define NL80211_FLAG_NEED_WDEV_UP	(NL80211_FLAG_NEED_WDEV |\
11835 					 NL80211_FLAG_CHECK_NETDEV_UP)
11836 #define NL80211_FLAG_CLEAR_SKB		0x20
11837 
11838 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11839 			    struct genl_info *info)
11840 {
11841 	struct cfg80211_registered_device *rdev;
11842 	struct wireless_dev *wdev;
11843 	struct net_device *dev;
11844 	bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11845 
11846 	if (rtnl)
11847 		rtnl_lock();
11848 
11849 	if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11850 		rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11851 		if (IS_ERR(rdev)) {
11852 			if (rtnl)
11853 				rtnl_unlock();
11854 			return PTR_ERR(rdev);
11855 		}
11856 		info->user_ptr[0] = rdev;
11857 	} else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11858 		   ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11859 		ASSERT_RTNL();
11860 
11861 		wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11862 						  info->attrs);
11863 		if (IS_ERR(wdev)) {
11864 			if (rtnl)
11865 				rtnl_unlock();
11866 			return PTR_ERR(wdev);
11867 		}
11868 
11869 		dev = wdev->netdev;
11870 		rdev = wiphy_to_rdev(wdev->wiphy);
11871 
11872 		if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11873 			if (!dev) {
11874 				if (rtnl)
11875 					rtnl_unlock();
11876 				return -EINVAL;
11877 			}
11878 
11879 			info->user_ptr[1] = dev;
11880 		} else {
11881 			info->user_ptr[1] = wdev;
11882 		}
11883 
11884 		if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11885 		    !wdev_running(wdev)) {
11886 			if (rtnl)
11887 				rtnl_unlock();
11888 			return -ENETDOWN;
11889 		}
11890 
11891 		if (dev)
11892 			dev_hold(dev);
11893 
11894 		info->user_ptr[0] = rdev;
11895 	}
11896 
11897 	return 0;
11898 }
11899 
11900 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11901 			      struct genl_info *info)
11902 {
11903 	if (info->user_ptr[1]) {
11904 		if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11905 			struct wireless_dev *wdev = info->user_ptr[1];
11906 
11907 			if (wdev->netdev)
11908 				dev_put(wdev->netdev);
11909 		} else {
11910 			dev_put(info->user_ptr[1]);
11911 		}
11912 	}
11913 
11914 	if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11915 		rtnl_unlock();
11916 
11917 	/* If needed, clear the netlink message payload from the SKB
11918 	 * as it might contain key data that shouldn't stick around on
11919 	 * the heap after the SKB is freed. The netlink message header
11920 	 * is still needed for further processing, so leave it intact.
11921 	 */
11922 	if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11923 		struct nlmsghdr *nlh = nlmsg_hdr(skb);
11924 
11925 		memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11926 	}
11927 }
11928 
11929 static const struct genl_ops nl80211_ops[] = {
11930 	{
11931 		.cmd = NL80211_CMD_GET_WIPHY,
11932 		.doit = nl80211_get_wiphy,
11933 		.dumpit = nl80211_dump_wiphy,
11934 		.done = nl80211_dump_wiphy_done,
11935 		.policy = nl80211_policy,
11936 		/* can be retrieved by unprivileged users */
11937 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
11938 				  NL80211_FLAG_NEED_RTNL,
11939 	},
11940 	{
11941 		.cmd = NL80211_CMD_SET_WIPHY,
11942 		.doit = nl80211_set_wiphy,
11943 		.policy = nl80211_policy,
11944 		.flags = GENL_UNS_ADMIN_PERM,
11945 		.internal_flags = NL80211_FLAG_NEED_RTNL,
11946 	},
11947 	{
11948 		.cmd = NL80211_CMD_GET_INTERFACE,
11949 		.doit = nl80211_get_interface,
11950 		.dumpit = nl80211_dump_interface,
11951 		.policy = nl80211_policy,
11952 		/* can be retrieved by unprivileged users */
11953 		.internal_flags = NL80211_FLAG_NEED_WDEV |
11954 				  NL80211_FLAG_NEED_RTNL,
11955 	},
11956 	{
11957 		.cmd = NL80211_CMD_SET_INTERFACE,
11958 		.doit = nl80211_set_interface,
11959 		.policy = nl80211_policy,
11960 		.flags = GENL_UNS_ADMIN_PERM,
11961 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
11962 				  NL80211_FLAG_NEED_RTNL,
11963 	},
11964 	{
11965 		.cmd = NL80211_CMD_NEW_INTERFACE,
11966 		.doit = nl80211_new_interface,
11967 		.policy = nl80211_policy,
11968 		.flags = GENL_UNS_ADMIN_PERM,
11969 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
11970 				  NL80211_FLAG_NEED_RTNL,
11971 	},
11972 	{
11973 		.cmd = NL80211_CMD_DEL_INTERFACE,
11974 		.doit = nl80211_del_interface,
11975 		.policy = nl80211_policy,
11976 		.flags = GENL_UNS_ADMIN_PERM,
11977 		.internal_flags = NL80211_FLAG_NEED_WDEV |
11978 				  NL80211_FLAG_NEED_RTNL,
11979 	},
11980 	{
11981 		.cmd = NL80211_CMD_GET_KEY,
11982 		.doit = nl80211_get_key,
11983 		.policy = nl80211_policy,
11984 		.flags = GENL_UNS_ADMIN_PERM,
11985 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11986 				  NL80211_FLAG_NEED_RTNL,
11987 	},
11988 	{
11989 		.cmd = NL80211_CMD_SET_KEY,
11990 		.doit = nl80211_set_key,
11991 		.policy = nl80211_policy,
11992 		.flags = GENL_UNS_ADMIN_PERM,
11993 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11994 				  NL80211_FLAG_NEED_RTNL |
11995 				  NL80211_FLAG_CLEAR_SKB,
11996 	},
11997 	{
11998 		.cmd = NL80211_CMD_NEW_KEY,
11999 		.doit = nl80211_new_key,
12000 		.policy = nl80211_policy,
12001 		.flags = GENL_UNS_ADMIN_PERM,
12002 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12003 				  NL80211_FLAG_NEED_RTNL |
12004 				  NL80211_FLAG_CLEAR_SKB,
12005 	},
12006 	{
12007 		.cmd = NL80211_CMD_DEL_KEY,
12008 		.doit = nl80211_del_key,
12009 		.policy = nl80211_policy,
12010 		.flags = GENL_UNS_ADMIN_PERM,
12011 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12012 				  NL80211_FLAG_NEED_RTNL,
12013 	},
12014 	{
12015 		.cmd = NL80211_CMD_SET_BEACON,
12016 		.policy = nl80211_policy,
12017 		.flags = GENL_UNS_ADMIN_PERM,
12018 		.doit = nl80211_set_beacon,
12019 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12020 				  NL80211_FLAG_NEED_RTNL,
12021 	},
12022 	{
12023 		.cmd = NL80211_CMD_START_AP,
12024 		.policy = nl80211_policy,
12025 		.flags = GENL_UNS_ADMIN_PERM,
12026 		.doit = nl80211_start_ap,
12027 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12028 				  NL80211_FLAG_NEED_RTNL,
12029 	},
12030 	{
12031 		.cmd = NL80211_CMD_STOP_AP,
12032 		.policy = nl80211_policy,
12033 		.flags = GENL_UNS_ADMIN_PERM,
12034 		.doit = nl80211_stop_ap,
12035 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12036 				  NL80211_FLAG_NEED_RTNL,
12037 	},
12038 	{
12039 		.cmd = NL80211_CMD_GET_STATION,
12040 		.doit = nl80211_get_station,
12041 		.dumpit = nl80211_dump_station,
12042 		.policy = nl80211_policy,
12043 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12044 				  NL80211_FLAG_NEED_RTNL,
12045 	},
12046 	{
12047 		.cmd = NL80211_CMD_SET_STATION,
12048 		.doit = nl80211_set_station,
12049 		.policy = nl80211_policy,
12050 		.flags = GENL_UNS_ADMIN_PERM,
12051 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12052 				  NL80211_FLAG_NEED_RTNL,
12053 	},
12054 	{
12055 		.cmd = NL80211_CMD_NEW_STATION,
12056 		.doit = nl80211_new_station,
12057 		.policy = nl80211_policy,
12058 		.flags = GENL_UNS_ADMIN_PERM,
12059 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12060 				  NL80211_FLAG_NEED_RTNL,
12061 	},
12062 	{
12063 		.cmd = NL80211_CMD_DEL_STATION,
12064 		.doit = nl80211_del_station,
12065 		.policy = nl80211_policy,
12066 		.flags = GENL_UNS_ADMIN_PERM,
12067 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12068 				  NL80211_FLAG_NEED_RTNL,
12069 	},
12070 	{
12071 		.cmd = NL80211_CMD_GET_MPATH,
12072 		.doit = nl80211_get_mpath,
12073 		.dumpit = nl80211_dump_mpath,
12074 		.policy = nl80211_policy,
12075 		.flags = GENL_UNS_ADMIN_PERM,
12076 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12077 				  NL80211_FLAG_NEED_RTNL,
12078 	},
12079 	{
12080 		.cmd = NL80211_CMD_GET_MPP,
12081 		.doit = nl80211_get_mpp,
12082 		.dumpit = nl80211_dump_mpp,
12083 		.policy = nl80211_policy,
12084 		.flags = GENL_UNS_ADMIN_PERM,
12085 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12086 				  NL80211_FLAG_NEED_RTNL,
12087 	},
12088 	{
12089 		.cmd = NL80211_CMD_SET_MPATH,
12090 		.doit = nl80211_set_mpath,
12091 		.policy = nl80211_policy,
12092 		.flags = GENL_UNS_ADMIN_PERM,
12093 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12094 				  NL80211_FLAG_NEED_RTNL,
12095 	},
12096 	{
12097 		.cmd = NL80211_CMD_NEW_MPATH,
12098 		.doit = nl80211_new_mpath,
12099 		.policy = nl80211_policy,
12100 		.flags = GENL_UNS_ADMIN_PERM,
12101 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12102 				  NL80211_FLAG_NEED_RTNL,
12103 	},
12104 	{
12105 		.cmd = NL80211_CMD_DEL_MPATH,
12106 		.doit = nl80211_del_mpath,
12107 		.policy = nl80211_policy,
12108 		.flags = GENL_UNS_ADMIN_PERM,
12109 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12110 				  NL80211_FLAG_NEED_RTNL,
12111 	},
12112 	{
12113 		.cmd = NL80211_CMD_SET_BSS,
12114 		.doit = nl80211_set_bss,
12115 		.policy = nl80211_policy,
12116 		.flags = GENL_UNS_ADMIN_PERM,
12117 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12118 				  NL80211_FLAG_NEED_RTNL,
12119 	},
12120 	{
12121 		.cmd = NL80211_CMD_GET_REG,
12122 		.doit = nl80211_get_reg_do,
12123 		.dumpit = nl80211_get_reg_dump,
12124 		.policy = nl80211_policy,
12125 		.internal_flags = NL80211_FLAG_NEED_RTNL,
12126 		/* can be retrieved by unprivileged users */
12127 	},
12128 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12129 	{
12130 		.cmd = NL80211_CMD_SET_REG,
12131 		.doit = nl80211_set_reg,
12132 		.policy = nl80211_policy,
12133 		.flags = GENL_ADMIN_PERM,
12134 		.internal_flags = NL80211_FLAG_NEED_RTNL,
12135 	},
12136 #endif
12137 	{
12138 		.cmd = NL80211_CMD_REQ_SET_REG,
12139 		.doit = nl80211_req_set_reg,
12140 		.policy = nl80211_policy,
12141 		.flags = GENL_ADMIN_PERM,
12142 	},
12143 	{
12144 		.cmd = NL80211_CMD_GET_MESH_CONFIG,
12145 		.doit = nl80211_get_mesh_config,
12146 		.policy = nl80211_policy,
12147 		/* can be retrieved by unprivileged users */
12148 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12149 				  NL80211_FLAG_NEED_RTNL,
12150 	},
12151 	{
12152 		.cmd = NL80211_CMD_SET_MESH_CONFIG,
12153 		.doit = nl80211_update_mesh_config,
12154 		.policy = nl80211_policy,
12155 		.flags = GENL_UNS_ADMIN_PERM,
12156 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12157 				  NL80211_FLAG_NEED_RTNL,
12158 	},
12159 	{
12160 		.cmd = NL80211_CMD_TRIGGER_SCAN,
12161 		.doit = nl80211_trigger_scan,
12162 		.policy = nl80211_policy,
12163 		.flags = GENL_UNS_ADMIN_PERM,
12164 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12165 				  NL80211_FLAG_NEED_RTNL,
12166 	},
12167 	{
12168 		.cmd = NL80211_CMD_ABORT_SCAN,
12169 		.doit = nl80211_abort_scan,
12170 		.policy = nl80211_policy,
12171 		.flags = GENL_UNS_ADMIN_PERM,
12172 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12173 				  NL80211_FLAG_NEED_RTNL,
12174 	},
12175 	{
12176 		.cmd = NL80211_CMD_GET_SCAN,
12177 		.policy = nl80211_policy,
12178 		.dumpit = nl80211_dump_scan,
12179 	},
12180 	{
12181 		.cmd = NL80211_CMD_START_SCHED_SCAN,
12182 		.doit = nl80211_start_sched_scan,
12183 		.policy = nl80211_policy,
12184 		.flags = GENL_UNS_ADMIN_PERM,
12185 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12186 				  NL80211_FLAG_NEED_RTNL,
12187 	},
12188 	{
12189 		.cmd = NL80211_CMD_STOP_SCHED_SCAN,
12190 		.doit = nl80211_stop_sched_scan,
12191 		.policy = nl80211_policy,
12192 		.flags = GENL_UNS_ADMIN_PERM,
12193 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12194 				  NL80211_FLAG_NEED_RTNL,
12195 	},
12196 	{
12197 		.cmd = NL80211_CMD_AUTHENTICATE,
12198 		.doit = nl80211_authenticate,
12199 		.policy = nl80211_policy,
12200 		.flags = GENL_UNS_ADMIN_PERM,
12201 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12202 				  NL80211_FLAG_NEED_RTNL |
12203 				  NL80211_FLAG_CLEAR_SKB,
12204 	},
12205 	{
12206 		.cmd = NL80211_CMD_ASSOCIATE,
12207 		.doit = nl80211_associate,
12208 		.policy = nl80211_policy,
12209 		.flags = GENL_UNS_ADMIN_PERM,
12210 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12211 				  NL80211_FLAG_NEED_RTNL,
12212 	},
12213 	{
12214 		.cmd = NL80211_CMD_DEAUTHENTICATE,
12215 		.doit = nl80211_deauthenticate,
12216 		.policy = nl80211_policy,
12217 		.flags = GENL_UNS_ADMIN_PERM,
12218 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12219 				  NL80211_FLAG_NEED_RTNL,
12220 	},
12221 	{
12222 		.cmd = NL80211_CMD_DISASSOCIATE,
12223 		.doit = nl80211_disassociate,
12224 		.policy = nl80211_policy,
12225 		.flags = GENL_UNS_ADMIN_PERM,
12226 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12227 				  NL80211_FLAG_NEED_RTNL,
12228 	},
12229 	{
12230 		.cmd = NL80211_CMD_JOIN_IBSS,
12231 		.doit = nl80211_join_ibss,
12232 		.policy = nl80211_policy,
12233 		.flags = GENL_UNS_ADMIN_PERM,
12234 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12235 				  NL80211_FLAG_NEED_RTNL,
12236 	},
12237 	{
12238 		.cmd = NL80211_CMD_LEAVE_IBSS,
12239 		.doit = nl80211_leave_ibss,
12240 		.policy = nl80211_policy,
12241 		.flags = GENL_UNS_ADMIN_PERM,
12242 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12243 				  NL80211_FLAG_NEED_RTNL,
12244 	},
12245 #ifdef CONFIG_NL80211_TESTMODE
12246 	{
12247 		.cmd = NL80211_CMD_TESTMODE,
12248 		.doit = nl80211_testmode_do,
12249 		.dumpit = nl80211_testmode_dump,
12250 		.policy = nl80211_policy,
12251 		.flags = GENL_UNS_ADMIN_PERM,
12252 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
12253 				  NL80211_FLAG_NEED_RTNL,
12254 	},
12255 #endif
12256 	{
12257 		.cmd = NL80211_CMD_CONNECT,
12258 		.doit = nl80211_connect,
12259 		.policy = nl80211_policy,
12260 		.flags = GENL_UNS_ADMIN_PERM,
12261 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12262 				  NL80211_FLAG_NEED_RTNL,
12263 	},
12264 	{
12265 		.cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12266 		.doit = nl80211_update_connect_params,
12267 		.policy = nl80211_policy,
12268 		.flags = GENL_ADMIN_PERM,
12269 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12270 				  NL80211_FLAG_NEED_RTNL,
12271 	},
12272 	{
12273 		.cmd = NL80211_CMD_DISCONNECT,
12274 		.doit = nl80211_disconnect,
12275 		.policy = nl80211_policy,
12276 		.flags = GENL_UNS_ADMIN_PERM,
12277 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12278 				  NL80211_FLAG_NEED_RTNL,
12279 	},
12280 	{
12281 		.cmd = NL80211_CMD_SET_WIPHY_NETNS,
12282 		.doit = nl80211_wiphy_netns,
12283 		.policy = nl80211_policy,
12284 		.flags = GENL_UNS_ADMIN_PERM,
12285 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
12286 				  NL80211_FLAG_NEED_RTNL,
12287 	},
12288 	{
12289 		.cmd = NL80211_CMD_GET_SURVEY,
12290 		.policy = nl80211_policy,
12291 		.dumpit = nl80211_dump_survey,
12292 	},
12293 	{
12294 		.cmd = NL80211_CMD_SET_PMKSA,
12295 		.doit = nl80211_setdel_pmksa,
12296 		.policy = nl80211_policy,
12297 		.flags = GENL_UNS_ADMIN_PERM,
12298 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12299 				  NL80211_FLAG_NEED_RTNL,
12300 	},
12301 	{
12302 		.cmd = NL80211_CMD_DEL_PMKSA,
12303 		.doit = nl80211_setdel_pmksa,
12304 		.policy = nl80211_policy,
12305 		.flags = GENL_UNS_ADMIN_PERM,
12306 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12307 				  NL80211_FLAG_NEED_RTNL,
12308 	},
12309 	{
12310 		.cmd = NL80211_CMD_FLUSH_PMKSA,
12311 		.doit = nl80211_flush_pmksa,
12312 		.policy = nl80211_policy,
12313 		.flags = GENL_UNS_ADMIN_PERM,
12314 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12315 				  NL80211_FLAG_NEED_RTNL,
12316 	},
12317 	{
12318 		.cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12319 		.doit = nl80211_remain_on_channel,
12320 		.policy = nl80211_policy,
12321 		.flags = GENL_UNS_ADMIN_PERM,
12322 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12323 				  NL80211_FLAG_NEED_RTNL,
12324 	},
12325 	{
12326 		.cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12327 		.doit = nl80211_cancel_remain_on_channel,
12328 		.policy = nl80211_policy,
12329 		.flags = GENL_UNS_ADMIN_PERM,
12330 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12331 				  NL80211_FLAG_NEED_RTNL,
12332 	},
12333 	{
12334 		.cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12335 		.doit = nl80211_set_tx_bitrate_mask,
12336 		.policy = nl80211_policy,
12337 		.flags = GENL_UNS_ADMIN_PERM,
12338 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12339 				  NL80211_FLAG_NEED_RTNL,
12340 	},
12341 	{
12342 		.cmd = NL80211_CMD_REGISTER_FRAME,
12343 		.doit = nl80211_register_mgmt,
12344 		.policy = nl80211_policy,
12345 		.flags = GENL_UNS_ADMIN_PERM,
12346 		.internal_flags = NL80211_FLAG_NEED_WDEV |
12347 				  NL80211_FLAG_NEED_RTNL,
12348 	},
12349 	{
12350 		.cmd = NL80211_CMD_FRAME,
12351 		.doit = nl80211_tx_mgmt,
12352 		.policy = nl80211_policy,
12353 		.flags = GENL_UNS_ADMIN_PERM,
12354 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12355 				  NL80211_FLAG_NEED_RTNL,
12356 	},
12357 	{
12358 		.cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12359 		.doit = nl80211_tx_mgmt_cancel_wait,
12360 		.policy = nl80211_policy,
12361 		.flags = GENL_UNS_ADMIN_PERM,
12362 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12363 				  NL80211_FLAG_NEED_RTNL,
12364 	},
12365 	{
12366 		.cmd = NL80211_CMD_SET_POWER_SAVE,
12367 		.doit = nl80211_set_power_save,
12368 		.policy = nl80211_policy,
12369 		.flags = GENL_UNS_ADMIN_PERM,
12370 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12371 				  NL80211_FLAG_NEED_RTNL,
12372 	},
12373 	{
12374 		.cmd = NL80211_CMD_GET_POWER_SAVE,
12375 		.doit = nl80211_get_power_save,
12376 		.policy = nl80211_policy,
12377 		/* can be retrieved by unprivileged users */
12378 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12379 				  NL80211_FLAG_NEED_RTNL,
12380 	},
12381 	{
12382 		.cmd = NL80211_CMD_SET_CQM,
12383 		.doit = nl80211_set_cqm,
12384 		.policy = nl80211_policy,
12385 		.flags = GENL_UNS_ADMIN_PERM,
12386 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12387 				  NL80211_FLAG_NEED_RTNL,
12388 	},
12389 	{
12390 		.cmd = NL80211_CMD_SET_CHANNEL,
12391 		.doit = nl80211_set_channel,
12392 		.policy = nl80211_policy,
12393 		.flags = GENL_UNS_ADMIN_PERM,
12394 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12395 				  NL80211_FLAG_NEED_RTNL,
12396 	},
12397 	{
12398 		.cmd = NL80211_CMD_SET_WDS_PEER,
12399 		.doit = nl80211_set_wds_peer,
12400 		.policy = nl80211_policy,
12401 		.flags = GENL_UNS_ADMIN_PERM,
12402 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12403 				  NL80211_FLAG_NEED_RTNL,
12404 	},
12405 	{
12406 		.cmd = NL80211_CMD_JOIN_MESH,
12407 		.doit = nl80211_join_mesh,
12408 		.policy = nl80211_policy,
12409 		.flags = GENL_UNS_ADMIN_PERM,
12410 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12411 				  NL80211_FLAG_NEED_RTNL,
12412 	},
12413 	{
12414 		.cmd = NL80211_CMD_LEAVE_MESH,
12415 		.doit = nl80211_leave_mesh,
12416 		.policy = nl80211_policy,
12417 		.flags = GENL_UNS_ADMIN_PERM,
12418 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12419 				  NL80211_FLAG_NEED_RTNL,
12420 	},
12421 	{
12422 		.cmd = NL80211_CMD_JOIN_OCB,
12423 		.doit = nl80211_join_ocb,
12424 		.policy = nl80211_policy,
12425 		.flags = GENL_UNS_ADMIN_PERM,
12426 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12427 				  NL80211_FLAG_NEED_RTNL,
12428 	},
12429 	{
12430 		.cmd = NL80211_CMD_LEAVE_OCB,
12431 		.doit = nl80211_leave_ocb,
12432 		.policy = nl80211_policy,
12433 		.flags = GENL_UNS_ADMIN_PERM,
12434 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12435 				  NL80211_FLAG_NEED_RTNL,
12436 	},
12437 #ifdef CONFIG_PM
12438 	{
12439 		.cmd = NL80211_CMD_GET_WOWLAN,
12440 		.doit = nl80211_get_wowlan,
12441 		.policy = nl80211_policy,
12442 		/* can be retrieved by unprivileged users */
12443 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
12444 				  NL80211_FLAG_NEED_RTNL,
12445 	},
12446 	{
12447 		.cmd = NL80211_CMD_SET_WOWLAN,
12448 		.doit = nl80211_set_wowlan,
12449 		.policy = nl80211_policy,
12450 		.flags = GENL_UNS_ADMIN_PERM,
12451 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
12452 				  NL80211_FLAG_NEED_RTNL,
12453 	},
12454 #endif
12455 	{
12456 		.cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12457 		.doit = nl80211_set_rekey_data,
12458 		.policy = nl80211_policy,
12459 		.flags = GENL_UNS_ADMIN_PERM,
12460 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12461 				  NL80211_FLAG_NEED_RTNL |
12462 				  NL80211_FLAG_CLEAR_SKB,
12463 	},
12464 	{
12465 		.cmd = NL80211_CMD_TDLS_MGMT,
12466 		.doit = nl80211_tdls_mgmt,
12467 		.policy = nl80211_policy,
12468 		.flags = GENL_UNS_ADMIN_PERM,
12469 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12470 				  NL80211_FLAG_NEED_RTNL,
12471 	},
12472 	{
12473 		.cmd = NL80211_CMD_TDLS_OPER,
12474 		.doit = nl80211_tdls_oper,
12475 		.policy = nl80211_policy,
12476 		.flags = GENL_UNS_ADMIN_PERM,
12477 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12478 				  NL80211_FLAG_NEED_RTNL,
12479 	},
12480 	{
12481 		.cmd = NL80211_CMD_UNEXPECTED_FRAME,
12482 		.doit = nl80211_register_unexpected_frame,
12483 		.policy = nl80211_policy,
12484 		.flags = GENL_UNS_ADMIN_PERM,
12485 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12486 				  NL80211_FLAG_NEED_RTNL,
12487 	},
12488 	{
12489 		.cmd = NL80211_CMD_PROBE_CLIENT,
12490 		.doit = nl80211_probe_client,
12491 		.policy = nl80211_policy,
12492 		.flags = GENL_UNS_ADMIN_PERM,
12493 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12494 				  NL80211_FLAG_NEED_RTNL,
12495 	},
12496 	{
12497 		.cmd = NL80211_CMD_REGISTER_BEACONS,
12498 		.doit = nl80211_register_beacons,
12499 		.policy = nl80211_policy,
12500 		.flags = GENL_UNS_ADMIN_PERM,
12501 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
12502 				  NL80211_FLAG_NEED_RTNL,
12503 	},
12504 	{
12505 		.cmd = NL80211_CMD_SET_NOACK_MAP,
12506 		.doit = nl80211_set_noack_map,
12507 		.policy = nl80211_policy,
12508 		.flags = GENL_UNS_ADMIN_PERM,
12509 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12510 				  NL80211_FLAG_NEED_RTNL,
12511 	},
12512 	{
12513 		.cmd = NL80211_CMD_START_P2P_DEVICE,
12514 		.doit = nl80211_start_p2p_device,
12515 		.policy = nl80211_policy,
12516 		.flags = GENL_UNS_ADMIN_PERM,
12517 		.internal_flags = NL80211_FLAG_NEED_WDEV |
12518 				  NL80211_FLAG_NEED_RTNL,
12519 	},
12520 	{
12521 		.cmd = NL80211_CMD_STOP_P2P_DEVICE,
12522 		.doit = nl80211_stop_p2p_device,
12523 		.policy = nl80211_policy,
12524 		.flags = GENL_UNS_ADMIN_PERM,
12525 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12526 				  NL80211_FLAG_NEED_RTNL,
12527 	},
12528 	{
12529 		.cmd = NL80211_CMD_START_NAN,
12530 		.doit = nl80211_start_nan,
12531 		.policy = nl80211_policy,
12532 		.flags = GENL_ADMIN_PERM,
12533 		.internal_flags = NL80211_FLAG_NEED_WDEV |
12534 				  NL80211_FLAG_NEED_RTNL,
12535 	},
12536 	{
12537 		.cmd = NL80211_CMD_STOP_NAN,
12538 		.doit = nl80211_stop_nan,
12539 		.policy = nl80211_policy,
12540 		.flags = GENL_ADMIN_PERM,
12541 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12542 				  NL80211_FLAG_NEED_RTNL,
12543 	},
12544 	{
12545 		.cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12546 		.doit = nl80211_nan_add_func,
12547 		.policy = nl80211_policy,
12548 		.flags = GENL_ADMIN_PERM,
12549 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12550 				  NL80211_FLAG_NEED_RTNL,
12551 	},
12552 	{
12553 		.cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12554 		.doit = nl80211_nan_del_func,
12555 		.policy = nl80211_policy,
12556 		.flags = GENL_ADMIN_PERM,
12557 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12558 				  NL80211_FLAG_NEED_RTNL,
12559 	},
12560 	{
12561 		.cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12562 		.doit = nl80211_nan_change_config,
12563 		.policy = nl80211_policy,
12564 		.flags = GENL_ADMIN_PERM,
12565 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12566 				  NL80211_FLAG_NEED_RTNL,
12567 	},
12568 	{
12569 		.cmd = NL80211_CMD_SET_MCAST_RATE,
12570 		.doit = nl80211_set_mcast_rate,
12571 		.policy = nl80211_policy,
12572 		.flags = GENL_UNS_ADMIN_PERM,
12573 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12574 				  NL80211_FLAG_NEED_RTNL,
12575 	},
12576 	{
12577 		.cmd = NL80211_CMD_SET_MAC_ACL,
12578 		.doit = nl80211_set_mac_acl,
12579 		.policy = nl80211_policy,
12580 		.flags = GENL_UNS_ADMIN_PERM,
12581 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12582 				  NL80211_FLAG_NEED_RTNL,
12583 	},
12584 	{
12585 		.cmd = NL80211_CMD_RADAR_DETECT,
12586 		.doit = nl80211_start_radar_detection,
12587 		.policy = nl80211_policy,
12588 		.flags = GENL_UNS_ADMIN_PERM,
12589 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12590 				  NL80211_FLAG_NEED_RTNL,
12591 	},
12592 	{
12593 		.cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
12594 		.doit = nl80211_get_protocol_features,
12595 		.policy = nl80211_policy,
12596 	},
12597 	{
12598 		.cmd = NL80211_CMD_UPDATE_FT_IES,
12599 		.doit = nl80211_update_ft_ies,
12600 		.policy = nl80211_policy,
12601 		.flags = GENL_UNS_ADMIN_PERM,
12602 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12603 				  NL80211_FLAG_NEED_RTNL,
12604 	},
12605 	{
12606 		.cmd = NL80211_CMD_CRIT_PROTOCOL_START,
12607 		.doit = nl80211_crit_protocol_start,
12608 		.policy = nl80211_policy,
12609 		.flags = GENL_UNS_ADMIN_PERM,
12610 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12611 				  NL80211_FLAG_NEED_RTNL,
12612 	},
12613 	{
12614 		.cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
12615 		.doit = nl80211_crit_protocol_stop,
12616 		.policy = nl80211_policy,
12617 		.flags = GENL_UNS_ADMIN_PERM,
12618 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12619 				  NL80211_FLAG_NEED_RTNL,
12620 	},
12621 	{
12622 		.cmd = NL80211_CMD_GET_COALESCE,
12623 		.doit = nl80211_get_coalesce,
12624 		.policy = nl80211_policy,
12625 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
12626 				  NL80211_FLAG_NEED_RTNL,
12627 	},
12628 	{
12629 		.cmd = NL80211_CMD_SET_COALESCE,
12630 		.doit = nl80211_set_coalesce,
12631 		.policy = nl80211_policy,
12632 		.flags = GENL_UNS_ADMIN_PERM,
12633 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
12634 				  NL80211_FLAG_NEED_RTNL,
12635 	},
12636 	{
12637 		.cmd = NL80211_CMD_CHANNEL_SWITCH,
12638 		.doit = nl80211_channel_switch,
12639 		.policy = nl80211_policy,
12640 		.flags = GENL_UNS_ADMIN_PERM,
12641 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12642 				  NL80211_FLAG_NEED_RTNL,
12643 	},
12644 	{
12645 		.cmd = NL80211_CMD_VENDOR,
12646 		.doit = nl80211_vendor_cmd,
12647 		.dumpit = nl80211_vendor_cmd_dump,
12648 		.policy = nl80211_policy,
12649 		.flags = GENL_UNS_ADMIN_PERM,
12650 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
12651 				  NL80211_FLAG_NEED_RTNL,
12652 	},
12653 	{
12654 		.cmd = NL80211_CMD_SET_QOS_MAP,
12655 		.doit = nl80211_set_qos_map,
12656 		.policy = nl80211_policy,
12657 		.flags = GENL_UNS_ADMIN_PERM,
12658 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12659 				  NL80211_FLAG_NEED_RTNL,
12660 	},
12661 	{
12662 		.cmd = NL80211_CMD_ADD_TX_TS,
12663 		.doit = nl80211_add_tx_ts,
12664 		.policy = nl80211_policy,
12665 		.flags = GENL_UNS_ADMIN_PERM,
12666 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12667 				  NL80211_FLAG_NEED_RTNL,
12668 	},
12669 	{
12670 		.cmd = NL80211_CMD_DEL_TX_TS,
12671 		.doit = nl80211_del_tx_ts,
12672 		.policy = nl80211_policy,
12673 		.flags = GENL_UNS_ADMIN_PERM,
12674 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12675 				  NL80211_FLAG_NEED_RTNL,
12676 	},
12677 	{
12678 		.cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
12679 		.doit = nl80211_tdls_channel_switch,
12680 		.policy = nl80211_policy,
12681 		.flags = GENL_UNS_ADMIN_PERM,
12682 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12683 				  NL80211_FLAG_NEED_RTNL,
12684 	},
12685 	{
12686 		.cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
12687 		.doit = nl80211_tdls_cancel_channel_switch,
12688 		.policy = nl80211_policy,
12689 		.flags = GENL_UNS_ADMIN_PERM,
12690 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12691 				  NL80211_FLAG_NEED_RTNL,
12692 	},
12693 	{
12694 		.cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
12695 		.doit = nl80211_set_multicast_to_unicast,
12696 		.policy = nl80211_policy,
12697 		.flags = GENL_UNS_ADMIN_PERM,
12698 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
12699 				  NL80211_FLAG_NEED_RTNL,
12700 	},
12701 };
12702 
12703 static struct genl_family nl80211_fam __ro_after_init = {
12704 	.name = NL80211_GENL_NAME,	/* have users key off the name instead */
12705 	.hdrsize = 0,			/* no private header */
12706 	.version = 1,			/* no particular meaning now */
12707 	.maxattr = NL80211_ATTR_MAX,
12708 	.netnsok = true,
12709 	.pre_doit = nl80211_pre_doit,
12710 	.post_doit = nl80211_post_doit,
12711 	.module = THIS_MODULE,
12712 	.ops = nl80211_ops,
12713 	.n_ops = ARRAY_SIZE(nl80211_ops),
12714 	.mcgrps = nl80211_mcgrps,
12715 	.n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
12716 };
12717 
12718 /* notification functions */
12719 
12720 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
12721 			  enum nl80211_commands cmd)
12722 {
12723 	struct sk_buff *msg;
12724 	struct nl80211_dump_wiphy_state state = {};
12725 
12726 	WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
12727 		cmd != NL80211_CMD_DEL_WIPHY);
12728 
12729 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12730 	if (!msg)
12731 		return;
12732 
12733 	if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
12734 		nlmsg_free(msg);
12735 		return;
12736 	}
12737 
12738 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12739 				NL80211_MCGRP_CONFIG, GFP_KERNEL);
12740 }
12741 
12742 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
12743 				struct wireless_dev *wdev,
12744 				enum nl80211_commands cmd)
12745 {
12746 	struct sk_buff *msg;
12747 
12748 	WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
12749 		cmd != NL80211_CMD_DEL_INTERFACE);
12750 
12751 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12752 	if (!msg)
12753 		return;
12754 
12755 	if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
12756 			       cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
12757 		nlmsg_free(msg);
12758 		return;
12759 	}
12760 
12761 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12762 				NL80211_MCGRP_CONFIG, GFP_KERNEL);
12763 }
12764 
12765 static int nl80211_add_scan_req(struct sk_buff *msg,
12766 				struct cfg80211_registered_device *rdev)
12767 {
12768 	struct cfg80211_scan_request *req = rdev->scan_req;
12769 	struct nlattr *nest;
12770 	int i;
12771 
12772 	if (WARN_ON(!req))
12773 		return 0;
12774 
12775 	nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
12776 	if (!nest)
12777 		goto nla_put_failure;
12778 	for (i = 0; i < req->n_ssids; i++) {
12779 		if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
12780 			goto nla_put_failure;
12781 	}
12782 	nla_nest_end(msg, nest);
12783 
12784 	nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12785 	if (!nest)
12786 		goto nla_put_failure;
12787 	for (i = 0; i < req->n_channels; i++) {
12788 		if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12789 			goto nla_put_failure;
12790 	}
12791 	nla_nest_end(msg, nest);
12792 
12793 	if (req->ie &&
12794 	    nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
12795 		goto nla_put_failure;
12796 
12797 	if (req->flags &&
12798 	    nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
12799 		goto nla_put_failure;
12800 
12801 	if (req->info.scan_start_tsf &&
12802 	    (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
12803 			       req->info.scan_start_tsf, NL80211_BSS_PAD) ||
12804 	     nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
12805 		     req->info.tsf_bssid)))
12806 		goto nla_put_failure;
12807 
12808 	return 0;
12809  nla_put_failure:
12810 	return -ENOBUFS;
12811 }
12812 
12813 static int nl80211_send_scan_msg(struct sk_buff *msg,
12814 				 struct cfg80211_registered_device *rdev,
12815 				 struct wireless_dev *wdev,
12816 				 u32 portid, u32 seq, int flags,
12817 				 u32 cmd)
12818 {
12819 	void *hdr;
12820 
12821 	hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12822 	if (!hdr)
12823 		return -1;
12824 
12825 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12826 	    (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12827 					 wdev->netdev->ifindex)) ||
12828 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12829 			      NL80211_ATTR_PAD))
12830 		goto nla_put_failure;
12831 
12832 	/* ignore errors and send incomplete event anyway */
12833 	nl80211_add_scan_req(msg, rdev);
12834 
12835 	genlmsg_end(msg, hdr);
12836 	return 0;
12837 
12838  nla_put_failure:
12839 	genlmsg_cancel(msg, hdr);
12840 	return -EMSGSIZE;
12841 }
12842 
12843 static int
12844 nl80211_send_sched_scan_msg(struct sk_buff *msg,
12845 			    struct cfg80211_registered_device *rdev,
12846 			    struct net_device *netdev,
12847 			    u32 portid, u32 seq, int flags, u32 cmd)
12848 {
12849 	void *hdr;
12850 
12851 	hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12852 	if (!hdr)
12853 		return -1;
12854 
12855 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12856 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12857 		goto nla_put_failure;
12858 
12859 	genlmsg_end(msg, hdr);
12860 	return 0;
12861 
12862  nla_put_failure:
12863 	genlmsg_cancel(msg, hdr);
12864 	return -EMSGSIZE;
12865 }
12866 
12867 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
12868 			     struct wireless_dev *wdev)
12869 {
12870 	struct sk_buff *msg;
12871 
12872 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12873 	if (!msg)
12874 		return;
12875 
12876 	if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12877 				  NL80211_CMD_TRIGGER_SCAN) < 0) {
12878 		nlmsg_free(msg);
12879 		return;
12880 	}
12881 
12882 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12883 				NL80211_MCGRP_SCAN, GFP_KERNEL);
12884 }
12885 
12886 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12887 				       struct wireless_dev *wdev, bool aborted)
12888 {
12889 	struct sk_buff *msg;
12890 
12891 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12892 	if (!msg)
12893 		return NULL;
12894 
12895 	if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12896 				  aborted ? NL80211_CMD_SCAN_ABORTED :
12897 					    NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12898 		nlmsg_free(msg);
12899 		return NULL;
12900 	}
12901 
12902 	return msg;
12903 }
12904 
12905 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
12906 			      struct sk_buff *msg)
12907 {
12908 	if (!msg)
12909 		return;
12910 
12911 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12912 				NL80211_MCGRP_SCAN, GFP_KERNEL);
12913 }
12914 
12915 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12916 				     struct net_device *netdev)
12917 {
12918 	struct sk_buff *msg;
12919 
12920 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12921 	if (!msg)
12922 		return;
12923 
12924 	if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12925 					NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12926 		nlmsg_free(msg);
12927 		return;
12928 	}
12929 
12930 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12931 				NL80211_MCGRP_SCAN, GFP_KERNEL);
12932 }
12933 
12934 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12935 			     struct net_device *netdev, u32 cmd)
12936 {
12937 	struct sk_buff *msg;
12938 
12939 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12940 	if (!msg)
12941 		return;
12942 
12943 	if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12944 		nlmsg_free(msg);
12945 		return;
12946 	}
12947 
12948 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12949 				NL80211_MCGRP_SCAN, GFP_KERNEL);
12950 }
12951 
12952 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12953 					  struct regulatory_request *request)
12954 {
12955 	/* Userspace can always count this one always being set */
12956 	if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12957 		goto nla_put_failure;
12958 
12959 	if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12960 		if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12961 			       NL80211_REGDOM_TYPE_WORLD))
12962 			goto nla_put_failure;
12963 	} else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12964 		if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12965 			       NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12966 			goto nla_put_failure;
12967 	} else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12968 		   request->intersect) {
12969 		if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12970 			       NL80211_REGDOM_TYPE_INTERSECTION))
12971 			goto nla_put_failure;
12972 	} else {
12973 		if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12974 			       NL80211_REGDOM_TYPE_COUNTRY) ||
12975 		    nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12976 				   request->alpha2))
12977 			goto nla_put_failure;
12978 	}
12979 
12980 	if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12981 		struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12982 
12983 		if (wiphy &&
12984 		    nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
12985 			goto nla_put_failure;
12986 
12987 		if (wiphy &&
12988 		    wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
12989 		    nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
12990 			goto nla_put_failure;
12991 	}
12992 
12993 	return true;
12994 
12995 nla_put_failure:
12996 	return false;
12997 }
12998 
12999 /*
13000  * This can happen on global regulatory changes or device specific settings
13001  * based on custom regulatory domains.
13002  */
13003 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13004 				     struct regulatory_request *request)
13005 {
13006 	struct sk_buff *msg;
13007 	void *hdr;
13008 
13009 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13010 	if (!msg)
13011 		return;
13012 
13013 	hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13014 	if (!hdr) {
13015 		nlmsg_free(msg);
13016 		return;
13017 	}
13018 
13019 	if (nl80211_reg_change_event_fill(msg, request) == false)
13020 		goto nla_put_failure;
13021 
13022 	genlmsg_end(msg, hdr);
13023 
13024 	rcu_read_lock();
13025 	genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13026 				NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13027 	rcu_read_unlock();
13028 
13029 	return;
13030 
13031 nla_put_failure:
13032 	genlmsg_cancel(msg, hdr);
13033 	nlmsg_free(msg);
13034 }
13035 
13036 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13037 				    struct net_device *netdev,
13038 				    const u8 *buf, size_t len,
13039 				    enum nl80211_commands cmd, gfp_t gfp,
13040 				    int uapsd_queues)
13041 {
13042 	struct sk_buff *msg;
13043 	void *hdr;
13044 
13045 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13046 	if (!msg)
13047 		return;
13048 
13049 	hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13050 	if (!hdr) {
13051 		nlmsg_free(msg);
13052 		return;
13053 	}
13054 
13055 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13056 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13057 	    nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13058 		goto nla_put_failure;
13059 
13060 	if (uapsd_queues >= 0) {
13061 		struct nlattr *nla_wmm =
13062 			nla_nest_start(msg, NL80211_ATTR_STA_WME);
13063 		if (!nla_wmm)
13064 			goto nla_put_failure;
13065 
13066 		if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13067 			       uapsd_queues))
13068 			goto nla_put_failure;
13069 
13070 		nla_nest_end(msg, nla_wmm);
13071 	}
13072 
13073 	genlmsg_end(msg, hdr);
13074 
13075 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13076 				NL80211_MCGRP_MLME, gfp);
13077 	return;
13078 
13079  nla_put_failure:
13080 	genlmsg_cancel(msg, hdr);
13081 	nlmsg_free(msg);
13082 }
13083 
13084 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13085 			  struct net_device *netdev, const u8 *buf,
13086 			  size_t len, gfp_t gfp)
13087 {
13088 	nl80211_send_mlme_event(rdev, netdev, buf, len,
13089 				NL80211_CMD_AUTHENTICATE, gfp, -1);
13090 }
13091 
13092 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13093 			   struct net_device *netdev, const u8 *buf,
13094 			   size_t len, gfp_t gfp, int uapsd_queues)
13095 {
13096 	nl80211_send_mlme_event(rdev, netdev, buf, len,
13097 				NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13098 }
13099 
13100 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13101 			 struct net_device *netdev, const u8 *buf,
13102 			 size_t len, gfp_t gfp)
13103 {
13104 	nl80211_send_mlme_event(rdev, netdev, buf, len,
13105 				NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13106 }
13107 
13108 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13109 			   struct net_device *netdev, const u8 *buf,
13110 			   size_t len, gfp_t gfp)
13111 {
13112 	nl80211_send_mlme_event(rdev, netdev, buf, len,
13113 				NL80211_CMD_DISASSOCIATE, gfp, -1);
13114 }
13115 
13116 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13117 				  size_t len)
13118 {
13119 	struct wireless_dev *wdev = dev->ieee80211_ptr;
13120 	struct wiphy *wiphy = wdev->wiphy;
13121 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13122 	const struct ieee80211_mgmt *mgmt = (void *)buf;
13123 	u32 cmd;
13124 
13125 	if (WARN_ON(len < 2))
13126 		return;
13127 
13128 	if (ieee80211_is_deauth(mgmt->frame_control))
13129 		cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13130 	else
13131 		cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13132 
13133 	trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13134 	nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13135 }
13136 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13137 
13138 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13139 				      struct net_device *netdev, int cmd,
13140 				      const u8 *addr, gfp_t gfp)
13141 {
13142 	struct sk_buff *msg;
13143 	void *hdr;
13144 
13145 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13146 	if (!msg)
13147 		return;
13148 
13149 	hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13150 	if (!hdr) {
13151 		nlmsg_free(msg);
13152 		return;
13153 	}
13154 
13155 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13156 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13157 	    nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13158 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13159 		goto nla_put_failure;
13160 
13161 	genlmsg_end(msg, hdr);
13162 
13163 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13164 				NL80211_MCGRP_MLME, gfp);
13165 	return;
13166 
13167  nla_put_failure:
13168 	genlmsg_cancel(msg, hdr);
13169 	nlmsg_free(msg);
13170 }
13171 
13172 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13173 			       struct net_device *netdev, const u8 *addr,
13174 			       gfp_t gfp)
13175 {
13176 	nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13177 				  addr, gfp);
13178 }
13179 
13180 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13181 				struct net_device *netdev, const u8 *addr,
13182 				gfp_t gfp)
13183 {
13184 	nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13185 				  addr, gfp);
13186 }
13187 
13188 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13189 				 struct net_device *netdev, const u8 *bssid,
13190 				 const u8 *req_ie, size_t req_ie_len,
13191 				 const u8 *resp_ie, size_t resp_ie_len,
13192 				 int status, gfp_t gfp)
13193 {
13194 	struct sk_buff *msg;
13195 	void *hdr;
13196 
13197 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13198 	if (!msg)
13199 		return;
13200 
13201 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13202 	if (!hdr) {
13203 		nlmsg_free(msg);
13204 		return;
13205 	}
13206 
13207 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13208 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13209 	    (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
13210 	    nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13211 			status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13212 			status) ||
13213 	    (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
13214 	    (req_ie &&
13215 	     nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13216 	    (resp_ie &&
13217 	     nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13218 		goto nla_put_failure;
13219 
13220 	genlmsg_end(msg, hdr);
13221 
13222 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13223 				NL80211_MCGRP_MLME, gfp);
13224 	return;
13225 
13226  nla_put_failure:
13227 	genlmsg_cancel(msg, hdr);
13228 	nlmsg_free(msg);
13229 }
13230 
13231 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13232 			 struct net_device *netdev, const u8 *bssid,
13233 			 const u8 *req_ie, size_t req_ie_len,
13234 			 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
13235 {
13236 	struct sk_buff *msg;
13237 	void *hdr;
13238 
13239 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13240 	if (!msg)
13241 		return;
13242 
13243 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13244 	if (!hdr) {
13245 		nlmsg_free(msg);
13246 		return;
13247 	}
13248 
13249 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13250 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13251 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13252 	    (req_ie &&
13253 	     nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13254 	    (resp_ie &&
13255 	     nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13256 		goto nla_put_failure;
13257 
13258 	genlmsg_end(msg, hdr);
13259 
13260 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13261 				NL80211_MCGRP_MLME, gfp);
13262 	return;
13263 
13264  nla_put_failure:
13265 	genlmsg_cancel(msg, hdr);
13266 	nlmsg_free(msg);
13267 }
13268 
13269 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13270 			       struct net_device *netdev, u16 reason,
13271 			       const u8 *ie, size_t ie_len, bool from_ap)
13272 {
13273 	struct sk_buff *msg;
13274 	void *hdr;
13275 
13276 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13277 	if (!msg)
13278 		return;
13279 
13280 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13281 	if (!hdr) {
13282 		nlmsg_free(msg);
13283 		return;
13284 	}
13285 
13286 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13287 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13288 	    (from_ap && reason &&
13289 	     nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13290 	    (from_ap &&
13291 	     nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13292 	    (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13293 		goto nla_put_failure;
13294 
13295 	genlmsg_end(msg, hdr);
13296 
13297 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13298 				NL80211_MCGRP_MLME, GFP_KERNEL);
13299 	return;
13300 
13301  nla_put_failure:
13302 	genlmsg_cancel(msg, hdr);
13303 	nlmsg_free(msg);
13304 }
13305 
13306 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13307 			     struct net_device *netdev, const u8 *bssid,
13308 			     gfp_t gfp)
13309 {
13310 	struct sk_buff *msg;
13311 	void *hdr;
13312 
13313 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13314 	if (!msg)
13315 		return;
13316 
13317 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13318 	if (!hdr) {
13319 		nlmsg_free(msg);
13320 		return;
13321 	}
13322 
13323 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13324 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13325 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13326 		goto nla_put_failure;
13327 
13328 	genlmsg_end(msg, hdr);
13329 
13330 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13331 				NL80211_MCGRP_MLME, gfp);
13332 	return;
13333 
13334  nla_put_failure:
13335 	genlmsg_cancel(msg, hdr);
13336 	nlmsg_free(msg);
13337 }
13338 
13339 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13340 					const u8* ie, u8 ie_len, gfp_t gfp)
13341 {
13342 	struct wireless_dev *wdev = dev->ieee80211_ptr;
13343 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13344 	struct sk_buff *msg;
13345 	void *hdr;
13346 
13347 	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13348 		return;
13349 
13350 	trace_cfg80211_notify_new_peer_candidate(dev, addr);
13351 
13352 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13353 	if (!msg)
13354 		return;
13355 
13356 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13357 	if (!hdr) {
13358 		nlmsg_free(msg);
13359 		return;
13360 	}
13361 
13362 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13363 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13364 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13365 	    (ie_len && ie &&
13366 	     nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13367 		goto nla_put_failure;
13368 
13369 	genlmsg_end(msg, hdr);
13370 
13371 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13372 				NL80211_MCGRP_MLME, gfp);
13373 	return;
13374 
13375  nla_put_failure:
13376 	genlmsg_cancel(msg, hdr);
13377 	nlmsg_free(msg);
13378 }
13379 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13380 
13381 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13382 				 struct net_device *netdev, const u8 *addr,
13383 				 enum nl80211_key_type key_type, int key_id,
13384 				 const u8 *tsc, gfp_t gfp)
13385 {
13386 	struct sk_buff *msg;
13387 	void *hdr;
13388 
13389 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13390 	if (!msg)
13391 		return;
13392 
13393 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13394 	if (!hdr) {
13395 		nlmsg_free(msg);
13396 		return;
13397 	}
13398 
13399 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13400 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13401 	    (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13402 	    nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13403 	    (key_id != -1 &&
13404 	     nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13405 	    (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13406 		goto nla_put_failure;
13407 
13408 	genlmsg_end(msg, hdr);
13409 
13410 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13411 				NL80211_MCGRP_MLME, gfp);
13412 	return;
13413 
13414  nla_put_failure:
13415 	genlmsg_cancel(msg, hdr);
13416 	nlmsg_free(msg);
13417 }
13418 
13419 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13420 				    struct ieee80211_channel *channel_before,
13421 				    struct ieee80211_channel *channel_after)
13422 {
13423 	struct sk_buff *msg;
13424 	void *hdr;
13425 	struct nlattr *nl_freq;
13426 
13427 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13428 	if (!msg)
13429 		return;
13430 
13431 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13432 	if (!hdr) {
13433 		nlmsg_free(msg);
13434 		return;
13435 	}
13436 
13437 	/*
13438 	 * Since we are applying the beacon hint to a wiphy we know its
13439 	 * wiphy_idx is valid
13440 	 */
13441 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13442 		goto nla_put_failure;
13443 
13444 	/* Before */
13445 	nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13446 	if (!nl_freq)
13447 		goto nla_put_failure;
13448 	if (nl80211_msg_put_channel(msg, channel_before, false))
13449 		goto nla_put_failure;
13450 	nla_nest_end(msg, nl_freq);
13451 
13452 	/* After */
13453 	nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13454 	if (!nl_freq)
13455 		goto nla_put_failure;
13456 	if (nl80211_msg_put_channel(msg, channel_after, false))
13457 		goto nla_put_failure;
13458 	nla_nest_end(msg, nl_freq);
13459 
13460 	genlmsg_end(msg, hdr);
13461 
13462 	rcu_read_lock();
13463 	genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13464 				NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13465 	rcu_read_unlock();
13466 
13467 	return;
13468 
13469 nla_put_failure:
13470 	genlmsg_cancel(msg, hdr);
13471 	nlmsg_free(msg);
13472 }
13473 
13474 static void nl80211_send_remain_on_chan_event(
13475 	int cmd, struct cfg80211_registered_device *rdev,
13476 	struct wireless_dev *wdev, u64 cookie,
13477 	struct ieee80211_channel *chan,
13478 	unsigned int duration, gfp_t gfp)
13479 {
13480 	struct sk_buff *msg;
13481 	void *hdr;
13482 
13483 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13484 	if (!msg)
13485 		return;
13486 
13487 	hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13488 	if (!hdr) {
13489 		nlmsg_free(msg);
13490 		return;
13491 	}
13492 
13493 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13494 	    (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13495 					 wdev->netdev->ifindex)) ||
13496 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13497 			      NL80211_ATTR_PAD) ||
13498 	    nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13499 	    nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13500 			NL80211_CHAN_NO_HT) ||
13501 	    nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13502 			      NL80211_ATTR_PAD))
13503 		goto nla_put_failure;
13504 
13505 	if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13506 	    nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13507 		goto nla_put_failure;
13508 
13509 	genlmsg_end(msg, hdr);
13510 
13511 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13512 				NL80211_MCGRP_MLME, gfp);
13513 	return;
13514 
13515  nla_put_failure:
13516 	genlmsg_cancel(msg, hdr);
13517 	nlmsg_free(msg);
13518 }
13519 
13520 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13521 			       struct ieee80211_channel *chan,
13522 			       unsigned int duration, gfp_t gfp)
13523 {
13524 	struct wiphy *wiphy = wdev->wiphy;
13525 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13526 
13527 	trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
13528 	nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13529 					  rdev, wdev, cookie, chan,
13530 					  duration, gfp);
13531 }
13532 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13533 
13534 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13535 					struct ieee80211_channel *chan,
13536 					gfp_t gfp)
13537 {
13538 	struct wiphy *wiphy = wdev->wiphy;
13539 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13540 
13541 	trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13542 	nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13543 					  rdev, wdev, cookie, chan, 0, gfp);
13544 }
13545 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13546 
13547 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13548 		      struct station_info *sinfo, gfp_t gfp)
13549 {
13550 	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13551 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13552 	struct sk_buff *msg;
13553 
13554 	trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13555 
13556 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13557 	if (!msg)
13558 		return;
13559 
13560 	if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13561 				 rdev, dev, mac_addr, sinfo) < 0) {
13562 		nlmsg_free(msg);
13563 		return;
13564 	}
13565 
13566 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13567 				NL80211_MCGRP_MLME, gfp);
13568 }
13569 EXPORT_SYMBOL(cfg80211_new_sta);
13570 
13571 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13572 			    struct station_info *sinfo, gfp_t gfp)
13573 {
13574 	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13575 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13576 	struct sk_buff *msg;
13577 	struct station_info empty_sinfo = {};
13578 
13579 	if (!sinfo)
13580 		sinfo = &empty_sinfo;
13581 
13582 	trace_cfg80211_del_sta(dev, mac_addr);
13583 
13584 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13585 	if (!msg)
13586 		return;
13587 
13588 	if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
13589 				 rdev, dev, mac_addr, sinfo) < 0) {
13590 		nlmsg_free(msg);
13591 		return;
13592 	}
13593 
13594 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13595 				NL80211_MCGRP_MLME, gfp);
13596 }
13597 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
13598 
13599 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
13600 			  enum nl80211_connect_failed_reason reason,
13601 			  gfp_t gfp)
13602 {
13603 	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13604 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13605 	struct sk_buff *msg;
13606 	void *hdr;
13607 
13608 	msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
13609 	if (!msg)
13610 		return;
13611 
13612 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
13613 	if (!hdr) {
13614 		nlmsg_free(msg);
13615 		return;
13616 	}
13617 
13618 	if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13619 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
13620 	    nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
13621 		goto nla_put_failure;
13622 
13623 	genlmsg_end(msg, hdr);
13624 
13625 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13626 				NL80211_MCGRP_MLME, gfp);
13627 	return;
13628 
13629  nla_put_failure:
13630 	genlmsg_cancel(msg, hdr);
13631 	nlmsg_free(msg);
13632 }
13633 EXPORT_SYMBOL(cfg80211_conn_failed);
13634 
13635 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
13636 				       const u8 *addr, gfp_t gfp)
13637 {
13638 	struct wireless_dev *wdev = dev->ieee80211_ptr;
13639 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13640 	struct sk_buff *msg;
13641 	void *hdr;
13642 	u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
13643 
13644 	if (!nlportid)
13645 		return false;
13646 
13647 	msg = nlmsg_new(100, gfp);
13648 	if (!msg)
13649 		return true;
13650 
13651 	hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13652 	if (!hdr) {
13653 		nlmsg_free(msg);
13654 		return true;
13655 	}
13656 
13657 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13658 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13659 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13660 		goto nla_put_failure;
13661 
13662 	genlmsg_end(msg, hdr);
13663 	genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13664 	return true;
13665 
13666  nla_put_failure:
13667 	genlmsg_cancel(msg, hdr);
13668 	nlmsg_free(msg);
13669 	return true;
13670 }
13671 
13672 bool cfg80211_rx_spurious_frame(struct net_device *dev,
13673 				const u8 *addr, gfp_t gfp)
13674 {
13675 	struct wireless_dev *wdev = dev->ieee80211_ptr;
13676 	bool ret;
13677 
13678 	trace_cfg80211_rx_spurious_frame(dev, addr);
13679 
13680 	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13681 		    wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
13682 		trace_cfg80211_return_bool(false);
13683 		return false;
13684 	}
13685 	ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
13686 					 addr, gfp);
13687 	trace_cfg80211_return_bool(ret);
13688 	return ret;
13689 }
13690 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
13691 
13692 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
13693 					const u8 *addr, gfp_t gfp)
13694 {
13695 	struct wireless_dev *wdev = dev->ieee80211_ptr;
13696 	bool ret;
13697 
13698 	trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
13699 
13700 	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13701 		    wdev->iftype != NL80211_IFTYPE_P2P_GO &&
13702 		    wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
13703 		trace_cfg80211_return_bool(false);
13704 		return false;
13705 	}
13706 	ret = __nl80211_unexpected_frame(dev,
13707 					 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
13708 					 addr, gfp);
13709 	trace_cfg80211_return_bool(ret);
13710 	return ret;
13711 }
13712 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
13713 
13714 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
13715 		      struct wireless_dev *wdev, u32 nlportid,
13716 		      int freq, int sig_dbm,
13717 		      const u8 *buf, size_t len, u32 flags, gfp_t gfp)
13718 {
13719 	struct net_device *netdev = wdev->netdev;
13720 	struct sk_buff *msg;
13721 	void *hdr;
13722 
13723 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13724 	if (!msg)
13725 		return -ENOMEM;
13726 
13727 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13728 	if (!hdr) {
13729 		nlmsg_free(msg);
13730 		return -ENOMEM;
13731 	}
13732 
13733 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13734 	    (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13735 					netdev->ifindex)) ||
13736 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13737 			      NL80211_ATTR_PAD) ||
13738 	    nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
13739 	    (sig_dbm &&
13740 	     nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13741 	    nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13742 	    (flags &&
13743 	     nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
13744 		goto nla_put_failure;
13745 
13746 	genlmsg_end(msg, hdr);
13747 
13748 	return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13749 
13750  nla_put_failure:
13751 	genlmsg_cancel(msg, hdr);
13752 	nlmsg_free(msg);
13753 	return -ENOBUFS;
13754 }
13755 
13756 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
13757 			     const u8 *buf, size_t len, bool ack, gfp_t gfp)
13758 {
13759 	struct wiphy *wiphy = wdev->wiphy;
13760 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13761 	struct net_device *netdev = wdev->netdev;
13762 	struct sk_buff *msg;
13763 	void *hdr;
13764 
13765 	trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
13766 
13767 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13768 	if (!msg)
13769 		return;
13770 
13771 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
13772 	if (!hdr) {
13773 		nlmsg_free(msg);
13774 		return;
13775 	}
13776 
13777 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13778 	    (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13779 				   netdev->ifindex)) ||
13780 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13781 			      NL80211_ATTR_PAD) ||
13782 	    nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13783 	    nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13784 			      NL80211_ATTR_PAD) ||
13785 	    (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
13786 		goto nla_put_failure;
13787 
13788 	genlmsg_end(msg, hdr);
13789 
13790 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13791 				NL80211_MCGRP_MLME, gfp);
13792 	return;
13793 
13794  nla_put_failure:
13795 	genlmsg_cancel(msg, hdr);
13796 	nlmsg_free(msg);
13797 }
13798 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
13799 
13800 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
13801 					    const char *mac, gfp_t gfp)
13802 {
13803 	struct wireless_dev *wdev = dev->ieee80211_ptr;
13804 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13805 	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13806 	void **cb;
13807 
13808 	if (!msg)
13809 		return NULL;
13810 
13811 	cb = (void **)msg->cb;
13812 
13813 	cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
13814 	if (!cb[0]) {
13815 		nlmsg_free(msg);
13816 		return NULL;
13817 	}
13818 
13819 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13820 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13821 		goto nla_put_failure;
13822 
13823 	if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
13824 		goto nla_put_failure;
13825 
13826 	cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
13827 	if (!cb[1])
13828 		goto nla_put_failure;
13829 
13830 	cb[2] = rdev;
13831 
13832 	return msg;
13833  nla_put_failure:
13834 	nlmsg_free(msg);
13835 	return NULL;
13836 }
13837 
13838 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
13839 {
13840 	void **cb = (void **)msg->cb;
13841 	struct cfg80211_registered_device *rdev = cb[2];
13842 
13843 	nla_nest_end(msg, cb[1]);
13844 	genlmsg_end(msg, cb[0]);
13845 
13846 	memset(msg->cb, 0, sizeof(msg->cb));
13847 
13848 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13849 				NL80211_MCGRP_MLME, gfp);
13850 }
13851 
13852 void cfg80211_cqm_rssi_notify(struct net_device *dev,
13853 			      enum nl80211_cqm_rssi_threshold_event rssi_event,
13854 			      gfp_t gfp)
13855 {
13856 	struct sk_buff *msg;
13857 
13858 	trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
13859 
13860 	if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13861 		    rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13862 		return;
13863 
13864 	msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13865 	if (!msg)
13866 		return;
13867 
13868 	if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13869 			rssi_event))
13870 		goto nla_put_failure;
13871 
13872 	cfg80211_send_cqm(msg, gfp);
13873 
13874 	return;
13875 
13876  nla_put_failure:
13877 	nlmsg_free(msg);
13878 }
13879 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13880 
13881 void cfg80211_cqm_txe_notify(struct net_device *dev,
13882 			     const u8 *peer, u32 num_packets,
13883 			     u32 rate, u32 intvl, gfp_t gfp)
13884 {
13885 	struct sk_buff *msg;
13886 
13887 	msg = cfg80211_prepare_cqm(dev, peer, gfp);
13888 	if (!msg)
13889 		return;
13890 
13891 	if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13892 		goto nla_put_failure;
13893 
13894 	if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13895 		goto nla_put_failure;
13896 
13897 	if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13898 		goto nla_put_failure;
13899 
13900 	cfg80211_send_cqm(msg, gfp);
13901 	return;
13902 
13903  nla_put_failure:
13904 	nlmsg_free(msg);
13905 }
13906 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13907 
13908 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13909 				 const u8 *peer, u32 num_packets, gfp_t gfp)
13910 {
13911 	struct sk_buff *msg;
13912 
13913 	trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13914 
13915 	msg = cfg80211_prepare_cqm(dev, peer, gfp);
13916 	if (!msg)
13917 		return;
13918 
13919 	if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13920 		goto nla_put_failure;
13921 
13922 	cfg80211_send_cqm(msg, gfp);
13923 	return;
13924 
13925  nla_put_failure:
13926 	nlmsg_free(msg);
13927 }
13928 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13929 
13930 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13931 {
13932 	struct sk_buff *msg;
13933 
13934 	msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13935 	if (!msg)
13936 		return;
13937 
13938 	if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13939 		goto nla_put_failure;
13940 
13941 	cfg80211_send_cqm(msg, gfp);
13942 	return;
13943 
13944  nla_put_failure:
13945 	nlmsg_free(msg);
13946 }
13947 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13948 
13949 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13950 				     struct net_device *netdev, const u8 *bssid,
13951 				     const u8 *replay_ctr, gfp_t gfp)
13952 {
13953 	struct sk_buff *msg;
13954 	struct nlattr *rekey_attr;
13955 	void *hdr;
13956 
13957 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13958 	if (!msg)
13959 		return;
13960 
13961 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13962 	if (!hdr) {
13963 		nlmsg_free(msg);
13964 		return;
13965 	}
13966 
13967 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13968 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13969 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13970 		goto nla_put_failure;
13971 
13972 	rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13973 	if (!rekey_attr)
13974 		goto nla_put_failure;
13975 
13976 	if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13977 		    NL80211_REPLAY_CTR_LEN, replay_ctr))
13978 		goto nla_put_failure;
13979 
13980 	nla_nest_end(msg, rekey_attr);
13981 
13982 	genlmsg_end(msg, hdr);
13983 
13984 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13985 				NL80211_MCGRP_MLME, gfp);
13986 	return;
13987 
13988  nla_put_failure:
13989 	genlmsg_cancel(msg, hdr);
13990 	nlmsg_free(msg);
13991 }
13992 
13993 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
13994 			       const u8 *replay_ctr, gfp_t gfp)
13995 {
13996 	struct wireless_dev *wdev = dev->ieee80211_ptr;
13997 	struct wiphy *wiphy = wdev->wiphy;
13998 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13999 
14000 	trace_cfg80211_gtk_rekey_notify(dev, bssid);
14001 	nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14002 }
14003 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14004 
14005 static void
14006 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14007 			       struct net_device *netdev, int index,
14008 			       const u8 *bssid, bool preauth, gfp_t gfp)
14009 {
14010 	struct sk_buff *msg;
14011 	struct nlattr *attr;
14012 	void *hdr;
14013 
14014 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14015 	if (!msg)
14016 		return;
14017 
14018 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14019 	if (!hdr) {
14020 		nlmsg_free(msg);
14021 		return;
14022 	}
14023 
14024 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14025 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14026 		goto nla_put_failure;
14027 
14028 	attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14029 	if (!attr)
14030 		goto nla_put_failure;
14031 
14032 	if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14033 	    nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14034 	    (preauth &&
14035 	     nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14036 		goto nla_put_failure;
14037 
14038 	nla_nest_end(msg, attr);
14039 
14040 	genlmsg_end(msg, hdr);
14041 
14042 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14043 				NL80211_MCGRP_MLME, gfp);
14044 	return;
14045 
14046  nla_put_failure:
14047 	genlmsg_cancel(msg, hdr);
14048 	nlmsg_free(msg);
14049 }
14050 
14051 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14052 				     const u8 *bssid, bool preauth, gfp_t gfp)
14053 {
14054 	struct wireless_dev *wdev = dev->ieee80211_ptr;
14055 	struct wiphy *wiphy = wdev->wiphy;
14056 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14057 
14058 	trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14059 	nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14060 }
14061 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14062 
14063 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14064 				     struct net_device *netdev,
14065 				     struct cfg80211_chan_def *chandef,
14066 				     gfp_t gfp,
14067 				     enum nl80211_commands notif,
14068 				     u8 count)
14069 {
14070 	struct sk_buff *msg;
14071 	void *hdr;
14072 
14073 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14074 	if (!msg)
14075 		return;
14076 
14077 	hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14078 	if (!hdr) {
14079 		nlmsg_free(msg);
14080 		return;
14081 	}
14082 
14083 	if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14084 		goto nla_put_failure;
14085 
14086 	if (nl80211_send_chandef(msg, chandef))
14087 		goto nla_put_failure;
14088 
14089 	if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14090 	    (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14091 			goto nla_put_failure;
14092 
14093 	genlmsg_end(msg, hdr);
14094 
14095 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14096 				NL80211_MCGRP_MLME, gfp);
14097 	return;
14098 
14099  nla_put_failure:
14100 	genlmsg_cancel(msg, hdr);
14101 	nlmsg_free(msg);
14102 }
14103 
14104 void cfg80211_ch_switch_notify(struct net_device *dev,
14105 			       struct cfg80211_chan_def *chandef)
14106 {
14107 	struct wireless_dev *wdev = dev->ieee80211_ptr;
14108 	struct wiphy *wiphy = wdev->wiphy;
14109 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14110 
14111 	ASSERT_WDEV_LOCK(wdev);
14112 
14113 	trace_cfg80211_ch_switch_notify(dev, chandef);
14114 
14115 	wdev->chandef = *chandef;
14116 	wdev->preset_chandef = *chandef;
14117 	nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14118 				 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14119 }
14120 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14121 
14122 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14123 				       struct cfg80211_chan_def *chandef,
14124 				       u8 count)
14125 {
14126 	struct wireless_dev *wdev = dev->ieee80211_ptr;
14127 	struct wiphy *wiphy = wdev->wiphy;
14128 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14129 
14130 	trace_cfg80211_ch_switch_started_notify(dev, chandef);
14131 
14132 	nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14133 				 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14134 }
14135 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14136 
14137 void
14138 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14139 		     const struct cfg80211_chan_def *chandef,
14140 		     enum nl80211_radar_event event,
14141 		     struct net_device *netdev, gfp_t gfp)
14142 {
14143 	struct sk_buff *msg;
14144 	void *hdr;
14145 
14146 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14147 	if (!msg)
14148 		return;
14149 
14150 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14151 	if (!hdr) {
14152 		nlmsg_free(msg);
14153 		return;
14154 	}
14155 
14156 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14157 		goto nla_put_failure;
14158 
14159 	/* NOP and radar events don't need a netdev parameter */
14160 	if (netdev) {
14161 		struct wireless_dev *wdev = netdev->ieee80211_ptr;
14162 
14163 		if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14164 		    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14165 				      NL80211_ATTR_PAD))
14166 			goto nla_put_failure;
14167 	}
14168 
14169 	if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14170 		goto nla_put_failure;
14171 
14172 	if (nl80211_send_chandef(msg, chandef))
14173 		goto nla_put_failure;
14174 
14175 	genlmsg_end(msg, hdr);
14176 
14177 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14178 				NL80211_MCGRP_MLME, gfp);
14179 	return;
14180 
14181  nla_put_failure:
14182 	genlmsg_cancel(msg, hdr);
14183 	nlmsg_free(msg);
14184 }
14185 
14186 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14187 			   u64 cookie, bool acked, gfp_t gfp)
14188 {
14189 	struct wireless_dev *wdev = dev->ieee80211_ptr;
14190 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14191 	struct sk_buff *msg;
14192 	void *hdr;
14193 
14194 	trace_cfg80211_probe_status(dev, addr, cookie, acked);
14195 
14196 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14197 
14198 	if (!msg)
14199 		return;
14200 
14201 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14202 	if (!hdr) {
14203 		nlmsg_free(msg);
14204 		return;
14205 	}
14206 
14207 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14208 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14209 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14210 	    nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14211 			      NL80211_ATTR_PAD) ||
14212 	    (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14213 		goto nla_put_failure;
14214 
14215 	genlmsg_end(msg, hdr);
14216 
14217 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14218 				NL80211_MCGRP_MLME, gfp);
14219 	return;
14220 
14221  nla_put_failure:
14222 	genlmsg_cancel(msg, hdr);
14223 	nlmsg_free(msg);
14224 }
14225 EXPORT_SYMBOL(cfg80211_probe_status);
14226 
14227 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14228 				 const u8 *frame, size_t len,
14229 				 int freq, int sig_dbm)
14230 {
14231 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14232 	struct sk_buff *msg;
14233 	void *hdr;
14234 	struct cfg80211_beacon_registration *reg;
14235 
14236 	trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14237 
14238 	spin_lock_bh(&rdev->beacon_registrations_lock);
14239 	list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14240 		msg = nlmsg_new(len + 100, GFP_ATOMIC);
14241 		if (!msg) {
14242 			spin_unlock_bh(&rdev->beacon_registrations_lock);
14243 			return;
14244 		}
14245 
14246 		hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14247 		if (!hdr)
14248 			goto nla_put_failure;
14249 
14250 		if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14251 		    (freq &&
14252 		     nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14253 		    (sig_dbm &&
14254 		     nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14255 		    nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14256 			goto nla_put_failure;
14257 
14258 		genlmsg_end(msg, hdr);
14259 
14260 		genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14261 	}
14262 	spin_unlock_bh(&rdev->beacon_registrations_lock);
14263 	return;
14264 
14265  nla_put_failure:
14266 	spin_unlock_bh(&rdev->beacon_registrations_lock);
14267 	if (hdr)
14268 		genlmsg_cancel(msg, hdr);
14269 	nlmsg_free(msg);
14270 }
14271 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14272 
14273 #ifdef CONFIG_PM
14274 static int cfg80211_net_detect_results(struct sk_buff *msg,
14275 				       struct cfg80211_wowlan_wakeup *wakeup)
14276 {
14277 	struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14278 	struct nlattr *nl_results, *nl_match, *nl_freqs;
14279 	int i, j;
14280 
14281 	nl_results = nla_nest_start(
14282 		msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14283 	if (!nl_results)
14284 		return -EMSGSIZE;
14285 
14286 	for (i = 0; i < nd->n_matches; i++) {
14287 		struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14288 
14289 		nl_match = nla_nest_start(msg, i);
14290 		if (!nl_match)
14291 			break;
14292 
14293 		/* The SSID attribute is optional in nl80211, but for
14294 		 * simplicity reasons it's always present in the
14295 		 * cfg80211 structure.  If a driver can't pass the
14296 		 * SSID, that needs to be changed.  A zero length SSID
14297 		 * is still a valid SSID (wildcard), so it cannot be
14298 		 * used for this purpose.
14299 		 */
14300 		if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14301 			    match->ssid.ssid)) {
14302 			nla_nest_cancel(msg, nl_match);
14303 			goto out;
14304 		}
14305 
14306 		if (match->n_channels) {
14307 			nl_freqs = nla_nest_start(
14308 				msg, NL80211_ATTR_SCAN_FREQUENCIES);
14309 			if (!nl_freqs) {
14310 				nla_nest_cancel(msg, nl_match);
14311 				goto out;
14312 			}
14313 
14314 			for (j = 0; j < match->n_channels; j++) {
14315 				if (nla_put_u32(msg, j, match->channels[j])) {
14316 					nla_nest_cancel(msg, nl_freqs);
14317 					nla_nest_cancel(msg, nl_match);
14318 					goto out;
14319 				}
14320 			}
14321 
14322 			nla_nest_end(msg, nl_freqs);
14323 		}
14324 
14325 		nla_nest_end(msg, nl_match);
14326 	}
14327 
14328 out:
14329 	nla_nest_end(msg, nl_results);
14330 	return 0;
14331 }
14332 
14333 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14334 				   struct cfg80211_wowlan_wakeup *wakeup,
14335 				   gfp_t gfp)
14336 {
14337 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14338 	struct sk_buff *msg;
14339 	void *hdr;
14340 	int size = 200;
14341 
14342 	trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14343 
14344 	if (wakeup)
14345 		size += wakeup->packet_present_len;
14346 
14347 	msg = nlmsg_new(size, gfp);
14348 	if (!msg)
14349 		return;
14350 
14351 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14352 	if (!hdr)
14353 		goto free_msg;
14354 
14355 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14356 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14357 			      NL80211_ATTR_PAD))
14358 		goto free_msg;
14359 
14360 	if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14361 					wdev->netdev->ifindex))
14362 		goto free_msg;
14363 
14364 	if (wakeup) {
14365 		struct nlattr *reasons;
14366 
14367 		reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14368 		if (!reasons)
14369 			goto free_msg;
14370 
14371 		if (wakeup->disconnect &&
14372 		    nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14373 			goto free_msg;
14374 		if (wakeup->magic_pkt &&
14375 		    nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14376 			goto free_msg;
14377 		if (wakeup->gtk_rekey_failure &&
14378 		    nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14379 			goto free_msg;
14380 		if (wakeup->eap_identity_req &&
14381 		    nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14382 			goto free_msg;
14383 		if (wakeup->four_way_handshake &&
14384 		    nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14385 			goto free_msg;
14386 		if (wakeup->rfkill_release &&
14387 		    nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14388 			goto free_msg;
14389 
14390 		if (wakeup->pattern_idx >= 0 &&
14391 		    nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14392 				wakeup->pattern_idx))
14393 			goto free_msg;
14394 
14395 		if (wakeup->tcp_match &&
14396 		    nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14397 			goto free_msg;
14398 
14399 		if (wakeup->tcp_connlost &&
14400 		    nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14401 			goto free_msg;
14402 
14403 		if (wakeup->tcp_nomoretokens &&
14404 		    nla_put_flag(msg,
14405 				 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14406 			goto free_msg;
14407 
14408 		if (wakeup->packet) {
14409 			u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14410 			u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14411 
14412 			if (!wakeup->packet_80211) {
14413 				pkt_attr =
14414 					NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14415 				len_attr =
14416 					NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14417 			}
14418 
14419 			if (wakeup->packet_len &&
14420 			    nla_put_u32(msg, len_attr, wakeup->packet_len))
14421 				goto free_msg;
14422 
14423 			if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14424 				    wakeup->packet))
14425 				goto free_msg;
14426 		}
14427 
14428 		if (wakeup->net_detect &&
14429 		    cfg80211_net_detect_results(msg, wakeup))
14430 				goto free_msg;
14431 
14432 		nla_nest_end(msg, reasons);
14433 	}
14434 
14435 	genlmsg_end(msg, hdr);
14436 
14437 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14438 				NL80211_MCGRP_MLME, gfp);
14439 	return;
14440 
14441  free_msg:
14442 	nlmsg_free(msg);
14443 }
14444 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14445 #endif
14446 
14447 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14448 				enum nl80211_tdls_operation oper,
14449 				u16 reason_code, gfp_t gfp)
14450 {
14451 	struct wireless_dev *wdev = dev->ieee80211_ptr;
14452 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14453 	struct sk_buff *msg;
14454 	void *hdr;
14455 
14456 	trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14457 					 reason_code);
14458 
14459 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14460 	if (!msg)
14461 		return;
14462 
14463 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14464 	if (!hdr) {
14465 		nlmsg_free(msg);
14466 		return;
14467 	}
14468 
14469 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14470 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14471 	    nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14472 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14473 	    (reason_code > 0 &&
14474 	     nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14475 		goto nla_put_failure;
14476 
14477 	genlmsg_end(msg, hdr);
14478 
14479 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14480 				NL80211_MCGRP_MLME, gfp);
14481 	return;
14482 
14483  nla_put_failure:
14484 	genlmsg_cancel(msg, hdr);
14485 	nlmsg_free(msg);
14486 }
14487 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14488 
14489 static int nl80211_netlink_notify(struct notifier_block * nb,
14490 				  unsigned long state,
14491 				  void *_notify)
14492 {
14493 	struct netlink_notify *notify = _notify;
14494 	struct cfg80211_registered_device *rdev;
14495 	struct wireless_dev *wdev;
14496 	struct cfg80211_beacon_registration *reg, *tmp;
14497 
14498 	if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14499 		return NOTIFY_DONE;
14500 
14501 	rcu_read_lock();
14502 
14503 	list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14504 		bool schedule_destroy_work = false;
14505 		bool schedule_scan_stop = false;
14506 		struct cfg80211_sched_scan_request *sched_scan_req =
14507 			rcu_dereference(rdev->sched_scan_req);
14508 
14509 		if (sched_scan_req && notify->portid &&
14510 		    sched_scan_req->owner_nlportid == notify->portid)
14511 			schedule_scan_stop = true;
14512 
14513 		list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14514 			cfg80211_mlme_unregister_socket(wdev, notify->portid);
14515 
14516 			if (wdev->owner_nlportid == notify->portid)
14517 				schedule_destroy_work = true;
14518 		}
14519 
14520 		spin_lock_bh(&rdev->beacon_registrations_lock);
14521 		list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14522 					 list) {
14523 			if (reg->nlportid == notify->portid) {
14524 				list_del(&reg->list);
14525 				kfree(reg);
14526 				break;
14527 			}
14528 		}
14529 		spin_unlock_bh(&rdev->beacon_registrations_lock);
14530 
14531 		if (schedule_destroy_work) {
14532 			struct cfg80211_iface_destroy *destroy;
14533 
14534 			destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
14535 			if (destroy) {
14536 				destroy->nlportid = notify->portid;
14537 				spin_lock(&rdev->destroy_list_lock);
14538 				list_add(&destroy->list, &rdev->destroy_list);
14539 				spin_unlock(&rdev->destroy_list_lock);
14540 				schedule_work(&rdev->destroy_work);
14541 			}
14542 		} else if (schedule_scan_stop) {
14543 			sched_scan_req->owner_nlportid = 0;
14544 
14545 			if (rdev->ops->sched_scan_stop &&
14546 			    rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
14547 				schedule_work(&rdev->sched_scan_stop_wk);
14548 		}
14549 	}
14550 
14551 	rcu_read_unlock();
14552 
14553 	/*
14554 	 * It is possible that the user space process that is controlling the
14555 	 * indoor setting disappeared, so notify the regulatory core.
14556 	 */
14557 	regulatory_netlink_notify(notify->portid);
14558 	return NOTIFY_OK;
14559 }
14560 
14561 static struct notifier_block nl80211_netlink_notifier = {
14562 	.notifier_call = nl80211_netlink_notify,
14563 };
14564 
14565 void cfg80211_ft_event(struct net_device *netdev,
14566 		       struct cfg80211_ft_event_params *ft_event)
14567 {
14568 	struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14569 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14570 	struct sk_buff *msg;
14571 	void *hdr;
14572 
14573 	trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14574 
14575 	if (!ft_event->target_ap)
14576 		return;
14577 
14578 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14579 	if (!msg)
14580 		return;
14581 
14582 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
14583 	if (!hdr)
14584 		goto out;
14585 
14586 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14587 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14588 	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
14589 		goto out;
14590 
14591 	if (ft_event->ies &&
14592 	    nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
14593 		goto out;
14594 	if (ft_event->ric_ies &&
14595 	    nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
14596 		    ft_event->ric_ies))
14597 		goto out;
14598 
14599 	genlmsg_end(msg, hdr);
14600 
14601 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14602 				NL80211_MCGRP_MLME, GFP_KERNEL);
14603 	return;
14604  out:
14605 	nlmsg_free(msg);
14606 }
14607 EXPORT_SYMBOL(cfg80211_ft_event);
14608 
14609 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
14610 {
14611 	struct cfg80211_registered_device *rdev;
14612 	struct sk_buff *msg;
14613 	void *hdr;
14614 	u32 nlportid;
14615 
14616 	rdev = wiphy_to_rdev(wdev->wiphy);
14617 	if (!rdev->crit_proto_nlportid)
14618 		return;
14619 
14620 	nlportid = rdev->crit_proto_nlportid;
14621 	rdev->crit_proto_nlportid = 0;
14622 
14623 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14624 	if (!msg)
14625 		return;
14626 
14627 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
14628 	if (!hdr)
14629 		goto nla_put_failure;
14630 
14631 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14632 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14633 			      NL80211_ATTR_PAD))
14634 		goto nla_put_failure;
14635 
14636 	genlmsg_end(msg, hdr);
14637 
14638 	genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14639 	return;
14640 
14641  nla_put_failure:
14642 	if (hdr)
14643 		genlmsg_cancel(msg, hdr);
14644 	nlmsg_free(msg);
14645 }
14646 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
14647 
14648 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
14649 {
14650 	struct wiphy *wiphy = wdev->wiphy;
14651 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14652 	struct sk_buff *msg;
14653 	void *hdr;
14654 
14655 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14656 	if (!msg)
14657 		return;
14658 
14659 	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
14660 	if (!hdr)
14661 		goto out;
14662 
14663 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14664 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
14665 	    nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14666 			      NL80211_ATTR_PAD))
14667 		goto out;
14668 
14669 	genlmsg_end(msg, hdr);
14670 
14671 	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
14672 				NL80211_MCGRP_MLME, GFP_KERNEL);
14673 	return;
14674  out:
14675 	nlmsg_free(msg);
14676 }
14677 
14678 /* initialisation/exit functions */
14679 
14680 int __init nl80211_init(void)
14681 {
14682 	int err;
14683 
14684 	err = genl_register_family(&nl80211_fam);
14685 	if (err)
14686 		return err;
14687 
14688 	err = netlink_register_notifier(&nl80211_netlink_notifier);
14689 	if (err)
14690 		goto err_out;
14691 
14692 	return 0;
14693  err_out:
14694 	genl_unregister_family(&nl80211_fam);
14695 	return err;
14696 }
14697 
14698 void nl80211_exit(void)
14699 {
14700 	netlink_unregister_notifier(&nl80211_netlink_notifier);
14701 	genl_unregister_family(&nl80211_fam);
14702 }
14703