xref: /openbmc/linux/net/mac80211/cfg.c (revision e2f1cf25)
1 /*
2  * mac80211 configuration hooks for cfg80211
3  *
4  * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
5  * Copyright 2013-2015  Intel Mobile Communications GmbH
6  *
7  * This file is GPLv2 as found in COPYING.
8  */
9 
10 #include <linux/ieee80211.h>
11 #include <linux/nl80211.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/slab.h>
14 #include <net/net_namespace.h>
15 #include <linux/rcupdate.h>
16 #include <linux/if_ether.h>
17 #include <net/cfg80211.h>
18 #include "ieee80211_i.h"
19 #include "driver-ops.h"
20 #include "cfg.h"
21 #include "rate.h"
22 #include "mesh.h"
23 #include "wme.h"
24 
25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
26 						const char *name,
27 						unsigned char name_assign_type,
28 						enum nl80211_iftype type,
29 						u32 *flags,
30 						struct vif_params *params)
31 {
32 	struct ieee80211_local *local = wiphy_priv(wiphy);
33 	struct wireless_dev *wdev;
34 	struct ieee80211_sub_if_data *sdata;
35 	int err;
36 
37 	err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
38 	if (err)
39 		return ERR_PTR(err);
40 
41 	if (type == NL80211_IFTYPE_MONITOR && flags) {
42 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
43 		sdata->u.mntr_flags = *flags;
44 	}
45 
46 	return wdev;
47 }
48 
49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
50 {
51 	ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
52 
53 	return 0;
54 }
55 
56 static int ieee80211_change_iface(struct wiphy *wiphy,
57 				  struct net_device *dev,
58 				  enum nl80211_iftype type, u32 *flags,
59 				  struct vif_params *params)
60 {
61 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
62 	int ret;
63 
64 	ret = ieee80211_if_change_type(sdata, type);
65 	if (ret)
66 		return ret;
67 
68 	if (type == NL80211_IFTYPE_AP_VLAN &&
69 	    params && params->use_4addr == 0)
70 		RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
71 	else if (type == NL80211_IFTYPE_STATION &&
72 		 params && params->use_4addr >= 0)
73 		sdata->u.mgd.use_4addr = params->use_4addr;
74 
75 	if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
76 		struct ieee80211_local *local = sdata->local;
77 
78 		if (ieee80211_sdata_running(sdata)) {
79 			u32 mask = MONITOR_FLAG_COOK_FRAMES |
80 				   MONITOR_FLAG_ACTIVE;
81 
82 			/*
83 			 * Prohibit MONITOR_FLAG_COOK_FRAMES and
84 			 * MONITOR_FLAG_ACTIVE to be changed while the
85 			 * interface is up.
86 			 * Else we would need to add a lot of cruft
87 			 * to update everything:
88 			 *	cooked_mntrs, monitor and all fif_* counters
89 			 *	reconfigure hardware
90 			 */
91 			if ((*flags & mask) != (sdata->u.mntr_flags & mask))
92 				return -EBUSY;
93 
94 			ieee80211_adjust_monitor_flags(sdata, -1);
95 			sdata->u.mntr_flags = *flags;
96 			ieee80211_adjust_monitor_flags(sdata, 1);
97 
98 			ieee80211_configure_filter(local);
99 		} else {
100 			/*
101 			 * Because the interface is down, ieee80211_do_stop
102 			 * and ieee80211_do_open take care of "everything"
103 			 * mentioned in the comment above.
104 			 */
105 			sdata->u.mntr_flags = *flags;
106 		}
107 	}
108 
109 	return 0;
110 }
111 
112 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
113 				      struct wireless_dev *wdev)
114 {
115 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
116 	int ret;
117 
118 	mutex_lock(&sdata->local->chanctx_mtx);
119 	ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
120 	mutex_unlock(&sdata->local->chanctx_mtx);
121 	if (ret < 0)
122 		return ret;
123 
124 	return ieee80211_do_open(wdev, true);
125 }
126 
127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
128 				      struct wireless_dev *wdev)
129 {
130 	ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
131 }
132 
133 static int ieee80211_set_noack_map(struct wiphy *wiphy,
134 				  struct net_device *dev,
135 				  u16 noack_map)
136 {
137 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
138 
139 	sdata->noack_map = noack_map;
140 
141 	ieee80211_check_fast_xmit_iface(sdata);
142 
143 	return 0;
144 }
145 
146 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
147 			     u8 key_idx, bool pairwise, const u8 *mac_addr,
148 			     struct key_params *params)
149 {
150 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
151 	struct ieee80211_local *local = sdata->local;
152 	struct sta_info *sta = NULL;
153 	const struct ieee80211_cipher_scheme *cs = NULL;
154 	struct ieee80211_key *key;
155 	int err;
156 
157 	if (!ieee80211_sdata_running(sdata))
158 		return -ENETDOWN;
159 
160 	/* reject WEP and TKIP keys if WEP failed to initialize */
161 	switch (params->cipher) {
162 	case WLAN_CIPHER_SUITE_WEP40:
163 	case WLAN_CIPHER_SUITE_TKIP:
164 	case WLAN_CIPHER_SUITE_WEP104:
165 		if (IS_ERR(local->wep_tx_tfm))
166 			return -EINVAL;
167 		break;
168 	case WLAN_CIPHER_SUITE_CCMP:
169 	case WLAN_CIPHER_SUITE_CCMP_256:
170 	case WLAN_CIPHER_SUITE_AES_CMAC:
171 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
172 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
173 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
174 	case WLAN_CIPHER_SUITE_GCMP:
175 	case WLAN_CIPHER_SUITE_GCMP_256:
176 		break;
177 	default:
178 		cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
179 		break;
180 	}
181 
182 	key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
183 				  params->key, params->seq_len, params->seq,
184 				  cs);
185 	if (IS_ERR(key))
186 		return PTR_ERR(key);
187 
188 	if (pairwise)
189 		key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
190 
191 	mutex_lock(&local->sta_mtx);
192 
193 	if (mac_addr) {
194 		if (ieee80211_vif_is_mesh(&sdata->vif))
195 			sta = sta_info_get(sdata, mac_addr);
196 		else
197 			sta = sta_info_get_bss(sdata, mac_addr);
198 		/*
199 		 * The ASSOC test makes sure the driver is ready to
200 		 * receive the key. When wpa_supplicant has roamed
201 		 * using FT, it attempts to set the key before
202 		 * association has completed, this rejects that attempt
203 		 * so it will set the key again after association.
204 		 *
205 		 * TODO: accept the key if we have a station entry and
206 		 *       add it to the device after the station.
207 		 */
208 		if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
209 			ieee80211_key_free_unused(key);
210 			err = -ENOENT;
211 			goto out_unlock;
212 		}
213 	}
214 
215 	switch (sdata->vif.type) {
216 	case NL80211_IFTYPE_STATION:
217 		if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
218 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
219 		break;
220 	case NL80211_IFTYPE_AP:
221 	case NL80211_IFTYPE_AP_VLAN:
222 		/* Keys without a station are used for TX only */
223 		if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
224 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
225 		break;
226 	case NL80211_IFTYPE_ADHOC:
227 		/* no MFP (yet) */
228 		break;
229 	case NL80211_IFTYPE_MESH_POINT:
230 #ifdef CONFIG_MAC80211_MESH
231 		if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
232 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
233 		break;
234 #endif
235 	case NL80211_IFTYPE_WDS:
236 	case NL80211_IFTYPE_MONITOR:
237 	case NL80211_IFTYPE_P2P_DEVICE:
238 	case NL80211_IFTYPE_UNSPECIFIED:
239 	case NUM_NL80211_IFTYPES:
240 	case NL80211_IFTYPE_P2P_CLIENT:
241 	case NL80211_IFTYPE_P2P_GO:
242 	case NL80211_IFTYPE_OCB:
243 		/* shouldn't happen */
244 		WARN_ON_ONCE(1);
245 		break;
246 	}
247 
248 	if (sta)
249 		sta->cipher_scheme = cs;
250 
251 	err = ieee80211_key_link(key, sdata, sta);
252 
253  out_unlock:
254 	mutex_unlock(&local->sta_mtx);
255 
256 	return err;
257 }
258 
259 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
260 			     u8 key_idx, bool pairwise, const u8 *mac_addr)
261 {
262 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
263 	struct ieee80211_local *local = sdata->local;
264 	struct sta_info *sta;
265 	struct ieee80211_key *key = NULL;
266 	int ret;
267 
268 	mutex_lock(&local->sta_mtx);
269 	mutex_lock(&local->key_mtx);
270 
271 	if (mac_addr) {
272 		ret = -ENOENT;
273 
274 		sta = sta_info_get_bss(sdata, mac_addr);
275 		if (!sta)
276 			goto out_unlock;
277 
278 		if (pairwise)
279 			key = key_mtx_dereference(local, sta->ptk[key_idx]);
280 		else
281 			key = key_mtx_dereference(local, sta->gtk[key_idx]);
282 	} else
283 		key = key_mtx_dereference(local, sdata->keys[key_idx]);
284 
285 	if (!key) {
286 		ret = -ENOENT;
287 		goto out_unlock;
288 	}
289 
290 	ieee80211_key_free(key, true);
291 
292 	ret = 0;
293  out_unlock:
294 	mutex_unlock(&local->key_mtx);
295 	mutex_unlock(&local->sta_mtx);
296 
297 	return ret;
298 }
299 
300 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
301 			     u8 key_idx, bool pairwise, const u8 *mac_addr,
302 			     void *cookie,
303 			     void (*callback)(void *cookie,
304 					      struct key_params *params))
305 {
306 	struct ieee80211_sub_if_data *sdata;
307 	struct sta_info *sta = NULL;
308 	u8 seq[6] = {0};
309 	struct key_params params;
310 	struct ieee80211_key *key = NULL;
311 	u64 pn64;
312 	u32 iv32;
313 	u16 iv16;
314 	int err = -ENOENT;
315 	struct ieee80211_key_seq kseq = {};
316 
317 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
318 
319 	rcu_read_lock();
320 
321 	if (mac_addr) {
322 		sta = sta_info_get_bss(sdata, mac_addr);
323 		if (!sta)
324 			goto out;
325 
326 		if (pairwise && key_idx < NUM_DEFAULT_KEYS)
327 			key = rcu_dereference(sta->ptk[key_idx]);
328 		else if (!pairwise &&
329 			 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
330 			key = rcu_dereference(sta->gtk[key_idx]);
331 	} else
332 		key = rcu_dereference(sdata->keys[key_idx]);
333 
334 	if (!key)
335 		goto out;
336 
337 	memset(&params, 0, sizeof(params));
338 
339 	params.cipher = key->conf.cipher;
340 
341 	switch (key->conf.cipher) {
342 	case WLAN_CIPHER_SUITE_TKIP:
343 		iv32 = key->u.tkip.tx.iv32;
344 		iv16 = key->u.tkip.tx.iv16;
345 
346 		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
347 		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
348 			drv_get_key_seq(sdata->local, key, &kseq);
349 			iv32 = kseq.tkip.iv32;
350 			iv16 = kseq.tkip.iv16;
351 		}
352 
353 		seq[0] = iv16 & 0xff;
354 		seq[1] = (iv16 >> 8) & 0xff;
355 		seq[2] = iv32 & 0xff;
356 		seq[3] = (iv32 >> 8) & 0xff;
357 		seq[4] = (iv32 >> 16) & 0xff;
358 		seq[5] = (iv32 >> 24) & 0xff;
359 		params.seq = seq;
360 		params.seq_len = 6;
361 		break;
362 	case WLAN_CIPHER_SUITE_CCMP:
363 	case WLAN_CIPHER_SUITE_CCMP_256:
364 	case WLAN_CIPHER_SUITE_AES_CMAC:
365 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
366 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
367 			     offsetof(typeof(kseq), aes_cmac));
368 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
369 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
370 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
371 			     offsetof(typeof(kseq), aes_gmac));
372 	case WLAN_CIPHER_SUITE_GCMP:
373 	case WLAN_CIPHER_SUITE_GCMP_256:
374 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
375 			     offsetof(typeof(kseq), gcmp));
376 
377 		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
378 		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
379 			drv_get_key_seq(sdata->local, key, &kseq);
380 			memcpy(seq, kseq.ccmp.pn, 6);
381 		} else {
382 			pn64 = atomic64_read(&key->conf.tx_pn);
383 			seq[0] = pn64;
384 			seq[1] = pn64 >> 8;
385 			seq[2] = pn64 >> 16;
386 			seq[3] = pn64 >> 24;
387 			seq[4] = pn64 >> 32;
388 			seq[5] = pn64 >> 40;
389 		}
390 		params.seq = seq;
391 		params.seq_len = 6;
392 		break;
393 	default:
394 		if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
395 			break;
396 		if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
397 			break;
398 		drv_get_key_seq(sdata->local, key, &kseq);
399 		params.seq = kseq.hw.seq;
400 		params.seq_len = kseq.hw.seq_len;
401 		break;
402 	}
403 
404 	params.key = key->conf.key;
405 	params.key_len = key->conf.keylen;
406 
407 	callback(cookie, &params);
408 	err = 0;
409 
410  out:
411 	rcu_read_unlock();
412 	return err;
413 }
414 
415 static int ieee80211_config_default_key(struct wiphy *wiphy,
416 					struct net_device *dev,
417 					u8 key_idx, bool uni,
418 					bool multi)
419 {
420 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
421 
422 	ieee80211_set_default_key(sdata, key_idx, uni, multi);
423 
424 	return 0;
425 }
426 
427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
428 					     struct net_device *dev,
429 					     u8 key_idx)
430 {
431 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
432 
433 	ieee80211_set_default_mgmt_key(sdata, key_idx);
434 
435 	return 0;
436 }
437 
438 void sta_set_rate_info_tx(struct sta_info *sta,
439 			  const struct ieee80211_tx_rate *rate,
440 			  struct rate_info *rinfo)
441 {
442 	rinfo->flags = 0;
443 	if (rate->flags & IEEE80211_TX_RC_MCS) {
444 		rinfo->flags |= RATE_INFO_FLAGS_MCS;
445 		rinfo->mcs = rate->idx;
446 	} else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
447 		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
448 		rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
449 		rinfo->nss = ieee80211_rate_get_vht_nss(rate);
450 	} else {
451 		struct ieee80211_supported_band *sband;
452 		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
453 		u16 brate;
454 
455 		sband = sta->local->hw.wiphy->bands[
456 				ieee80211_get_sdata_band(sta->sdata)];
457 		brate = sband->bitrates[rate->idx].bitrate;
458 		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
459 	}
460 	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
461 		rinfo->bw = RATE_INFO_BW_40;
462 	else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
463 		rinfo->bw = RATE_INFO_BW_80;
464 	else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
465 		rinfo->bw = RATE_INFO_BW_160;
466 	else
467 		rinfo->bw = RATE_INFO_BW_20;
468 	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
469 		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
470 }
471 
472 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
473 {
474 	rinfo->flags = 0;
475 
476 	if (sta->last_rx_rate_flag & RX_FLAG_HT) {
477 		rinfo->flags |= RATE_INFO_FLAGS_MCS;
478 		rinfo->mcs = sta->last_rx_rate_idx;
479 	} else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
480 		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
481 		rinfo->nss = sta->last_rx_rate_vht_nss;
482 		rinfo->mcs = sta->last_rx_rate_idx;
483 	} else {
484 		struct ieee80211_supported_band *sband;
485 		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
486 		u16 brate;
487 
488 		sband = sta->local->hw.wiphy->bands[
489 				ieee80211_get_sdata_band(sta->sdata)];
490 		brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
491 		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
492 	}
493 
494 	if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
495 		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
496 
497 	if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
498 		rinfo->bw = RATE_INFO_BW_5;
499 	else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
500 		rinfo->bw = RATE_INFO_BW_10;
501 	else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
502 		rinfo->bw = RATE_INFO_BW_40;
503 	else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
504 		rinfo->bw = RATE_INFO_BW_80;
505 	else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
506 		rinfo->bw = RATE_INFO_BW_160;
507 	else
508 		rinfo->bw = RATE_INFO_BW_20;
509 }
510 
511 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
512 				  int idx, u8 *mac, struct station_info *sinfo)
513 {
514 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
515 	struct ieee80211_local *local = sdata->local;
516 	struct sta_info *sta;
517 	int ret = -ENOENT;
518 
519 	mutex_lock(&local->sta_mtx);
520 
521 	sta = sta_info_get_by_idx(sdata, idx);
522 	if (sta) {
523 		ret = 0;
524 		memcpy(mac, sta->sta.addr, ETH_ALEN);
525 		sta_set_sinfo(sta, sinfo);
526 	}
527 
528 	mutex_unlock(&local->sta_mtx);
529 
530 	return ret;
531 }
532 
533 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
534 				 int idx, struct survey_info *survey)
535 {
536 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
537 
538 	return drv_get_survey(local, idx, survey);
539 }
540 
541 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
542 				 const u8 *mac, struct station_info *sinfo)
543 {
544 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
545 	struct ieee80211_local *local = sdata->local;
546 	struct sta_info *sta;
547 	int ret = -ENOENT;
548 
549 	mutex_lock(&local->sta_mtx);
550 
551 	sta = sta_info_get_bss(sdata, mac);
552 	if (sta) {
553 		ret = 0;
554 		sta_set_sinfo(sta, sinfo);
555 	}
556 
557 	mutex_unlock(&local->sta_mtx);
558 
559 	return ret;
560 }
561 
562 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
563 					 struct cfg80211_chan_def *chandef)
564 {
565 	struct ieee80211_local *local = wiphy_priv(wiphy);
566 	struct ieee80211_sub_if_data *sdata;
567 	int ret = 0;
568 
569 	if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
570 		return 0;
571 
572 	mutex_lock(&local->mtx);
573 	mutex_lock(&local->iflist_mtx);
574 	if (local->use_chanctx) {
575 		sdata = rcu_dereference_protected(
576 				local->monitor_sdata,
577 				lockdep_is_held(&local->iflist_mtx));
578 		if (sdata) {
579 			ieee80211_vif_release_channel(sdata);
580 			ret = ieee80211_vif_use_channel(sdata, chandef,
581 					IEEE80211_CHANCTX_EXCLUSIVE);
582 		}
583 	} else if (local->open_count == local->monitors) {
584 		local->_oper_chandef = *chandef;
585 		ieee80211_hw_config(local, 0);
586 	}
587 
588 	if (ret == 0)
589 		local->monitor_chandef = *chandef;
590 	mutex_unlock(&local->iflist_mtx);
591 	mutex_unlock(&local->mtx);
592 
593 	return ret;
594 }
595 
596 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
597 				    const u8 *resp, size_t resp_len,
598 				    const struct ieee80211_csa_settings *csa)
599 {
600 	struct probe_resp *new, *old;
601 
602 	if (!resp || !resp_len)
603 		return 1;
604 
605 	old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
606 
607 	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
608 	if (!new)
609 		return -ENOMEM;
610 
611 	new->len = resp_len;
612 	memcpy(new->data, resp, resp_len);
613 
614 	if (csa)
615 		memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
616 		       csa->n_counter_offsets_presp *
617 		       sizeof(new->csa_counter_offsets[0]));
618 
619 	rcu_assign_pointer(sdata->u.ap.probe_resp, new);
620 	if (old)
621 		kfree_rcu(old, rcu_head);
622 
623 	return 0;
624 }
625 
626 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
627 				   struct cfg80211_beacon_data *params,
628 				   const struct ieee80211_csa_settings *csa)
629 {
630 	struct beacon_data *new, *old;
631 	int new_head_len, new_tail_len;
632 	int size, err;
633 	u32 changed = BSS_CHANGED_BEACON;
634 
635 	old = sdata_dereference(sdata->u.ap.beacon, sdata);
636 
637 
638 	/* Need to have a beacon head if we don't have one yet */
639 	if (!params->head && !old)
640 		return -EINVAL;
641 
642 	/* new or old head? */
643 	if (params->head)
644 		new_head_len = params->head_len;
645 	else
646 		new_head_len = old->head_len;
647 
648 	/* new or old tail? */
649 	if (params->tail || !old)
650 		/* params->tail_len will be zero for !params->tail */
651 		new_tail_len = params->tail_len;
652 	else
653 		new_tail_len = old->tail_len;
654 
655 	size = sizeof(*new) + new_head_len + new_tail_len;
656 
657 	new = kzalloc(size, GFP_KERNEL);
658 	if (!new)
659 		return -ENOMEM;
660 
661 	/* start filling the new info now */
662 
663 	/*
664 	 * pointers go into the block we allocated,
665 	 * memory is | beacon_data | head | tail |
666 	 */
667 	new->head = ((u8 *) new) + sizeof(*new);
668 	new->tail = new->head + new_head_len;
669 	new->head_len = new_head_len;
670 	new->tail_len = new_tail_len;
671 
672 	if (csa) {
673 		new->csa_current_counter = csa->count;
674 		memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
675 		       csa->n_counter_offsets_beacon *
676 		       sizeof(new->csa_counter_offsets[0]));
677 	}
678 
679 	/* copy in head */
680 	if (params->head)
681 		memcpy(new->head, params->head, new_head_len);
682 	else
683 		memcpy(new->head, old->head, new_head_len);
684 
685 	/* copy in optional tail */
686 	if (params->tail)
687 		memcpy(new->tail, params->tail, new_tail_len);
688 	else
689 		if (old)
690 			memcpy(new->tail, old->tail, new_tail_len);
691 
692 	err = ieee80211_set_probe_resp(sdata, params->probe_resp,
693 				       params->probe_resp_len, csa);
694 	if (err < 0)
695 		return err;
696 	if (err == 0)
697 		changed |= BSS_CHANGED_AP_PROBE_RESP;
698 
699 	rcu_assign_pointer(sdata->u.ap.beacon, new);
700 
701 	if (old)
702 		kfree_rcu(old, rcu_head);
703 
704 	return changed;
705 }
706 
707 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
708 			      struct cfg80211_ap_settings *params)
709 {
710 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
711 	struct ieee80211_local *local = sdata->local;
712 	struct beacon_data *old;
713 	struct ieee80211_sub_if_data *vlan;
714 	u32 changed = BSS_CHANGED_BEACON_INT |
715 		      BSS_CHANGED_BEACON_ENABLED |
716 		      BSS_CHANGED_BEACON |
717 		      BSS_CHANGED_SSID |
718 		      BSS_CHANGED_P2P_PS |
719 		      BSS_CHANGED_TXPOWER;
720 	int err;
721 
722 	old = sdata_dereference(sdata->u.ap.beacon, sdata);
723 	if (old)
724 		return -EALREADY;
725 
726 	switch (params->smps_mode) {
727 	case NL80211_SMPS_OFF:
728 		sdata->smps_mode = IEEE80211_SMPS_OFF;
729 		break;
730 	case NL80211_SMPS_STATIC:
731 		sdata->smps_mode = IEEE80211_SMPS_STATIC;
732 		break;
733 	case NL80211_SMPS_DYNAMIC:
734 		sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
735 		break;
736 	default:
737 		return -EINVAL;
738 	}
739 	sdata->needed_rx_chains = sdata->local->rx_chains;
740 
741 	mutex_lock(&local->mtx);
742 	err = ieee80211_vif_use_channel(sdata, &params->chandef,
743 					IEEE80211_CHANCTX_SHARED);
744 	if (!err)
745 		ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
746 	mutex_unlock(&local->mtx);
747 	if (err)
748 		return err;
749 
750 	/*
751 	 * Apply control port protocol, this allows us to
752 	 * not encrypt dynamic WEP control frames.
753 	 */
754 	sdata->control_port_protocol = params->crypto.control_port_ethertype;
755 	sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
756 	sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
757 							&params->crypto,
758 							sdata->vif.type);
759 
760 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
761 		vlan->control_port_protocol =
762 			params->crypto.control_port_ethertype;
763 		vlan->control_port_no_encrypt =
764 			params->crypto.control_port_no_encrypt;
765 		vlan->encrypt_headroom =
766 			ieee80211_cs_headroom(sdata->local,
767 					      &params->crypto,
768 					      vlan->vif.type);
769 	}
770 
771 	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
772 	sdata->vif.bss_conf.dtim_period = params->dtim_period;
773 	sdata->vif.bss_conf.enable_beacon = true;
774 
775 	sdata->vif.bss_conf.ssid_len = params->ssid_len;
776 	if (params->ssid_len)
777 		memcpy(sdata->vif.bss_conf.ssid, params->ssid,
778 		       params->ssid_len);
779 	sdata->vif.bss_conf.hidden_ssid =
780 		(params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
781 
782 	memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
783 	       sizeof(sdata->vif.bss_conf.p2p_noa_attr));
784 	sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
785 		params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
786 	if (params->p2p_opp_ps)
787 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
788 					IEEE80211_P2P_OPPPS_ENABLE_BIT;
789 
790 	err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
791 	if (err < 0) {
792 		ieee80211_vif_release_channel(sdata);
793 		return err;
794 	}
795 	changed |= err;
796 
797 	err = drv_start_ap(sdata->local, sdata);
798 	if (err) {
799 		old = sdata_dereference(sdata->u.ap.beacon, sdata);
800 
801 		if (old)
802 			kfree_rcu(old, rcu_head);
803 		RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
804 		ieee80211_vif_release_channel(sdata);
805 		return err;
806 	}
807 
808 	ieee80211_recalc_dtim(local, sdata);
809 	ieee80211_bss_info_change_notify(sdata, changed);
810 
811 	netif_carrier_on(dev);
812 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
813 		netif_carrier_on(vlan->dev);
814 
815 	return 0;
816 }
817 
818 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
819 				   struct cfg80211_beacon_data *params)
820 {
821 	struct ieee80211_sub_if_data *sdata;
822 	struct beacon_data *old;
823 	int err;
824 
825 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
826 	sdata_assert_lock(sdata);
827 
828 	/* don't allow changing the beacon while CSA is in place - offset
829 	 * of channel switch counter may change
830 	 */
831 	if (sdata->vif.csa_active)
832 		return -EBUSY;
833 
834 	old = sdata_dereference(sdata->u.ap.beacon, sdata);
835 	if (!old)
836 		return -ENOENT;
837 
838 	err = ieee80211_assign_beacon(sdata, params, NULL);
839 	if (err < 0)
840 		return err;
841 	ieee80211_bss_info_change_notify(sdata, err);
842 	return 0;
843 }
844 
845 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
846 {
847 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
848 	struct ieee80211_sub_if_data *vlan;
849 	struct ieee80211_local *local = sdata->local;
850 	struct beacon_data *old_beacon;
851 	struct probe_resp *old_probe_resp;
852 	struct cfg80211_chan_def chandef;
853 
854 	sdata_assert_lock(sdata);
855 
856 	old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
857 	if (!old_beacon)
858 		return -ENOENT;
859 	old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
860 
861 	/* abort any running channel switch */
862 	mutex_lock(&local->mtx);
863 	sdata->vif.csa_active = false;
864 	if (sdata->csa_block_tx) {
865 		ieee80211_wake_vif_queues(local, sdata,
866 					  IEEE80211_QUEUE_STOP_REASON_CSA);
867 		sdata->csa_block_tx = false;
868 	}
869 
870 	mutex_unlock(&local->mtx);
871 
872 	kfree(sdata->u.ap.next_beacon);
873 	sdata->u.ap.next_beacon = NULL;
874 
875 	/* turn off carrier for this interface and dependent VLANs */
876 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
877 		netif_carrier_off(vlan->dev);
878 	netif_carrier_off(dev);
879 
880 	/* remove beacon and probe response */
881 	RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
882 	RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
883 	kfree_rcu(old_beacon, rcu_head);
884 	if (old_probe_resp)
885 		kfree_rcu(old_probe_resp, rcu_head);
886 	sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
887 
888 	__sta_info_flush(sdata, true);
889 	ieee80211_free_keys(sdata, true);
890 
891 	sdata->vif.bss_conf.enable_beacon = false;
892 	sdata->vif.bss_conf.ssid_len = 0;
893 	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
894 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
895 
896 	if (sdata->wdev.cac_started) {
897 		chandef = sdata->vif.bss_conf.chandef;
898 		cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
899 		cfg80211_cac_event(sdata->dev, &chandef,
900 				   NL80211_RADAR_CAC_ABORTED,
901 				   GFP_KERNEL);
902 	}
903 
904 	drv_stop_ap(sdata->local, sdata);
905 
906 	/* free all potentially still buffered bcast frames */
907 	local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
908 	skb_queue_purge(&sdata->u.ap.ps.bc_buf);
909 
910 	mutex_lock(&local->mtx);
911 	ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
912 	ieee80211_vif_release_channel(sdata);
913 	mutex_unlock(&local->mtx);
914 
915 	return 0;
916 }
917 
918 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
919 struct iapp_layer2_update {
920 	u8 da[ETH_ALEN];	/* broadcast */
921 	u8 sa[ETH_ALEN];	/* STA addr */
922 	__be16 len;		/* 6 */
923 	u8 dsap;		/* 0 */
924 	u8 ssap;		/* 0 */
925 	u8 control;
926 	u8 xid_info[3];
927 } __packed;
928 
929 static void ieee80211_send_layer2_update(struct sta_info *sta)
930 {
931 	struct iapp_layer2_update *msg;
932 	struct sk_buff *skb;
933 
934 	/* Send Level 2 Update Frame to update forwarding tables in layer 2
935 	 * bridge devices */
936 
937 	skb = dev_alloc_skb(sizeof(*msg));
938 	if (!skb)
939 		return;
940 	msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
941 
942 	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
943 	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
944 
945 	eth_broadcast_addr(msg->da);
946 	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
947 	msg->len = htons(6);
948 	msg->dsap = 0;
949 	msg->ssap = 0x01;	/* NULL LSAP, CR Bit: Response */
950 	msg->control = 0xaf;	/* XID response lsb.1111F101.
951 				 * F=0 (no poll command; unsolicited frame) */
952 	msg->xid_info[0] = 0x81;	/* XID format identifier */
953 	msg->xid_info[1] = 1;	/* LLC types/classes: Type 1 LLC */
954 	msg->xid_info[2] = 0;	/* XID sender's receive window size (RW) */
955 
956 	skb->dev = sta->sdata->dev;
957 	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
958 	memset(skb->cb, 0, sizeof(skb->cb));
959 	netif_rx_ni(skb);
960 }
961 
962 static int sta_apply_auth_flags(struct ieee80211_local *local,
963 				struct sta_info *sta,
964 				u32 mask, u32 set)
965 {
966 	int ret;
967 
968 	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
969 	    set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
970 	    !test_sta_flag(sta, WLAN_STA_AUTH)) {
971 		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
972 		if (ret)
973 			return ret;
974 	}
975 
976 	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
977 	    set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
978 	    !test_sta_flag(sta, WLAN_STA_ASSOC)) {
979 		/*
980 		 * When peer becomes associated, init rate control as
981 		 * well. Some drivers require rate control initialized
982 		 * before drv_sta_state() is called.
983 		 */
984 		if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
985 			rate_control_rate_init(sta);
986 
987 		ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
988 		if (ret)
989 			return ret;
990 	}
991 
992 	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
993 		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
994 			ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
995 		else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
996 			ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
997 		else
998 			ret = 0;
999 		if (ret)
1000 			return ret;
1001 	}
1002 
1003 	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1004 	    !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1005 	    test_sta_flag(sta, WLAN_STA_ASSOC)) {
1006 		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1007 		if (ret)
1008 			return ret;
1009 	}
1010 
1011 	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1012 	    !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1013 	    test_sta_flag(sta, WLAN_STA_AUTH)) {
1014 		ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1015 		if (ret)
1016 			return ret;
1017 	}
1018 
1019 	return 0;
1020 }
1021 
1022 static int sta_apply_parameters(struct ieee80211_local *local,
1023 				struct sta_info *sta,
1024 				struct station_parameters *params)
1025 {
1026 	int ret = 0;
1027 	struct ieee80211_supported_band *sband;
1028 	struct ieee80211_sub_if_data *sdata = sta->sdata;
1029 	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1030 	u32 mask, set;
1031 
1032 	sband = local->hw.wiphy->bands[band];
1033 
1034 	mask = params->sta_flags_mask;
1035 	set = params->sta_flags_set;
1036 
1037 	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1038 		/*
1039 		 * In mesh mode, ASSOCIATED isn't part of the nl80211
1040 		 * API but must follow AUTHENTICATED for driver state.
1041 		 */
1042 		if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1043 			mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1044 		if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1045 			set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1046 	} else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1047 		/*
1048 		 * TDLS -- everything follows authorized, but
1049 		 * only becoming authorized is possible, not
1050 		 * going back
1051 		 */
1052 		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1053 			set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1054 			       BIT(NL80211_STA_FLAG_ASSOCIATED);
1055 			mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1056 				BIT(NL80211_STA_FLAG_ASSOCIATED);
1057 		}
1058 	}
1059 
1060 	if (mask & BIT(NL80211_STA_FLAG_WME) &&
1061 	    local->hw.queues >= IEEE80211_NUM_ACS)
1062 		sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1063 
1064 	/* auth flags will be set later for TDLS stations */
1065 	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1066 		ret = sta_apply_auth_flags(local, sta, mask, set);
1067 		if (ret)
1068 			return ret;
1069 	}
1070 
1071 	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1072 		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1073 			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1074 		else
1075 			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1076 	}
1077 
1078 	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1079 		sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1080 		if (set & BIT(NL80211_STA_FLAG_MFP))
1081 			set_sta_flag(sta, WLAN_STA_MFP);
1082 		else
1083 			clear_sta_flag(sta, WLAN_STA_MFP);
1084 	}
1085 
1086 	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1087 		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1088 			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1089 		else
1090 			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1091 	}
1092 
1093 	/* mark TDLS channel switch support, if the AP allows it */
1094 	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1095 	    !sdata->u.mgd.tdls_chan_switch_prohibited &&
1096 	    params->ext_capab_len >= 4 &&
1097 	    params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1098 		set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1099 
1100 	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1101 		sta->sta.uapsd_queues = params->uapsd_queues;
1102 		sta->sta.max_sp = params->max_sp;
1103 	}
1104 
1105 	/*
1106 	 * cfg80211 validates this (1-2007) and allows setting the AID
1107 	 * only when creating a new station entry
1108 	 */
1109 	if (params->aid)
1110 		sta->sta.aid = params->aid;
1111 
1112 	/*
1113 	 * Some of the following updates would be racy if called on an
1114 	 * existing station, via ieee80211_change_station(). However,
1115 	 * all such changes are rejected by cfg80211 except for updates
1116 	 * changing the supported rates on an existing but not yet used
1117 	 * TDLS peer.
1118 	 */
1119 
1120 	if (params->listen_interval >= 0)
1121 		sta->listen_interval = params->listen_interval;
1122 
1123 	if (params->supported_rates) {
1124 		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1125 					 sband, params->supported_rates,
1126 					 params->supported_rates_len,
1127 					 &sta->sta.supp_rates[band]);
1128 	}
1129 
1130 	if (params->ht_capa)
1131 		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1132 						  params->ht_capa, sta);
1133 
1134 	if (params->vht_capa)
1135 		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1136 						    params->vht_capa, sta);
1137 
1138 	if (params->opmode_notif_used) {
1139 		/* returned value is only needed for rc update, but the
1140 		 * rc isn't initialized here yet, so ignore it
1141 		 */
1142 		__ieee80211_vht_handle_opmode(sdata, sta,
1143 					      params->opmode_notif,
1144 					      band, false);
1145 	}
1146 
1147 	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1148 #ifdef CONFIG_MAC80211_MESH
1149 		u32 changed = 0;
1150 
1151 		if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1152 			switch (params->plink_state) {
1153 			case NL80211_PLINK_ESTAB:
1154 				if (sta->plink_state != NL80211_PLINK_ESTAB)
1155 					changed = mesh_plink_inc_estab_count(
1156 							sdata);
1157 				sta->plink_state = params->plink_state;
1158 
1159 				ieee80211_mps_sta_status_update(sta);
1160 				changed |= ieee80211_mps_set_sta_local_pm(sta,
1161 					      sdata->u.mesh.mshcfg.power_mode);
1162 				break;
1163 			case NL80211_PLINK_LISTEN:
1164 			case NL80211_PLINK_BLOCKED:
1165 			case NL80211_PLINK_OPN_SNT:
1166 			case NL80211_PLINK_OPN_RCVD:
1167 			case NL80211_PLINK_CNF_RCVD:
1168 			case NL80211_PLINK_HOLDING:
1169 				if (sta->plink_state == NL80211_PLINK_ESTAB)
1170 					changed = mesh_plink_dec_estab_count(
1171 							sdata);
1172 				sta->plink_state = params->plink_state;
1173 
1174 				ieee80211_mps_sta_status_update(sta);
1175 				changed |= ieee80211_mps_set_sta_local_pm(sta,
1176 						NL80211_MESH_POWER_UNKNOWN);
1177 				break;
1178 			default:
1179 				/*  nothing  */
1180 				break;
1181 			}
1182 		}
1183 
1184 		switch (params->plink_action) {
1185 		case NL80211_PLINK_ACTION_NO_ACTION:
1186 			/* nothing */
1187 			break;
1188 		case NL80211_PLINK_ACTION_OPEN:
1189 			changed |= mesh_plink_open(sta);
1190 			break;
1191 		case NL80211_PLINK_ACTION_BLOCK:
1192 			changed |= mesh_plink_block(sta);
1193 			break;
1194 		}
1195 
1196 		if (params->local_pm)
1197 			changed |=
1198 			      ieee80211_mps_set_sta_local_pm(sta,
1199 							     params->local_pm);
1200 		ieee80211_mbss_info_change_notify(sdata, changed);
1201 #endif
1202 	}
1203 
1204 	/* set the STA state after all sta info from usermode has been set */
1205 	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1206 		ret = sta_apply_auth_flags(local, sta, mask, set);
1207 		if (ret)
1208 			return ret;
1209 	}
1210 
1211 	return 0;
1212 }
1213 
1214 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1215 				 const u8 *mac,
1216 				 struct station_parameters *params)
1217 {
1218 	struct ieee80211_local *local = wiphy_priv(wiphy);
1219 	struct sta_info *sta;
1220 	struct ieee80211_sub_if_data *sdata;
1221 	int err;
1222 	int layer2_update;
1223 
1224 	if (params->vlan) {
1225 		sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1226 
1227 		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1228 		    sdata->vif.type != NL80211_IFTYPE_AP)
1229 			return -EINVAL;
1230 	} else
1231 		sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1232 
1233 	if (ether_addr_equal(mac, sdata->vif.addr))
1234 		return -EINVAL;
1235 
1236 	if (is_multicast_ether_addr(mac))
1237 		return -EINVAL;
1238 
1239 	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1240 	if (!sta)
1241 		return -ENOMEM;
1242 
1243 	/*
1244 	 * defaults -- if userspace wants something else we'll
1245 	 * change it accordingly in sta_apply_parameters()
1246 	 */
1247 	if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1248 		sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1249 		sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1250 	} else {
1251 		sta->sta.tdls = true;
1252 	}
1253 
1254 	err = sta_apply_parameters(local, sta, params);
1255 	if (err) {
1256 		sta_info_free(local, sta);
1257 		return err;
1258 	}
1259 
1260 	/*
1261 	 * for TDLS, rate control should be initialized only when
1262 	 * rates are known and station is marked authorized
1263 	 */
1264 	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1265 		rate_control_rate_init(sta);
1266 
1267 	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1268 		sdata->vif.type == NL80211_IFTYPE_AP;
1269 
1270 	err = sta_info_insert_rcu(sta);
1271 	if (err) {
1272 		rcu_read_unlock();
1273 		return err;
1274 	}
1275 
1276 	if (layer2_update)
1277 		ieee80211_send_layer2_update(sta);
1278 
1279 	rcu_read_unlock();
1280 
1281 	return 0;
1282 }
1283 
1284 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1285 				 struct station_del_parameters *params)
1286 {
1287 	struct ieee80211_sub_if_data *sdata;
1288 
1289 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1290 
1291 	if (params->mac)
1292 		return sta_info_destroy_addr_bss(sdata, params->mac);
1293 
1294 	sta_info_flush(sdata);
1295 	return 0;
1296 }
1297 
1298 static int ieee80211_change_station(struct wiphy *wiphy,
1299 				    struct net_device *dev, const u8 *mac,
1300 				    struct station_parameters *params)
1301 {
1302 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1303 	struct ieee80211_local *local = wiphy_priv(wiphy);
1304 	struct sta_info *sta;
1305 	struct ieee80211_sub_if_data *vlansdata;
1306 	enum cfg80211_station_type statype;
1307 	int err;
1308 
1309 	mutex_lock(&local->sta_mtx);
1310 
1311 	sta = sta_info_get_bss(sdata, mac);
1312 	if (!sta) {
1313 		err = -ENOENT;
1314 		goto out_err;
1315 	}
1316 
1317 	switch (sdata->vif.type) {
1318 	case NL80211_IFTYPE_MESH_POINT:
1319 		if (sdata->u.mesh.user_mpm)
1320 			statype = CFG80211_STA_MESH_PEER_USER;
1321 		else
1322 			statype = CFG80211_STA_MESH_PEER_KERNEL;
1323 		break;
1324 	case NL80211_IFTYPE_ADHOC:
1325 		statype = CFG80211_STA_IBSS;
1326 		break;
1327 	case NL80211_IFTYPE_STATION:
1328 		if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1329 			statype = CFG80211_STA_AP_STA;
1330 			break;
1331 		}
1332 		if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1333 			statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1334 		else
1335 			statype = CFG80211_STA_TDLS_PEER_SETUP;
1336 		break;
1337 	case NL80211_IFTYPE_AP:
1338 	case NL80211_IFTYPE_AP_VLAN:
1339 		statype = CFG80211_STA_AP_CLIENT;
1340 		break;
1341 	default:
1342 		err = -EOPNOTSUPP;
1343 		goto out_err;
1344 	}
1345 
1346 	err = cfg80211_check_station_change(wiphy, params, statype);
1347 	if (err)
1348 		goto out_err;
1349 
1350 	if (params->vlan && params->vlan != sta->sdata->dev) {
1351 		bool prev_4addr = false;
1352 		bool new_4addr = false;
1353 
1354 		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1355 
1356 		if (params->vlan->ieee80211_ptr->use_4addr) {
1357 			if (vlansdata->u.vlan.sta) {
1358 				err = -EBUSY;
1359 				goto out_err;
1360 			}
1361 
1362 			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1363 			new_4addr = true;
1364 		}
1365 
1366 		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1367 		    sta->sdata->u.vlan.sta) {
1368 			RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1369 			prev_4addr = true;
1370 		}
1371 
1372 		sta->sdata = vlansdata;
1373 		ieee80211_check_fast_xmit(sta);
1374 
1375 		if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1376 		    prev_4addr != new_4addr) {
1377 			if (new_4addr)
1378 				atomic_dec(&sta->sdata->bss->num_mcast_sta);
1379 			else
1380 				atomic_inc(&sta->sdata->bss->num_mcast_sta);
1381 		}
1382 
1383 		ieee80211_send_layer2_update(sta);
1384 	}
1385 
1386 	err = sta_apply_parameters(local, sta, params);
1387 	if (err)
1388 		goto out_err;
1389 
1390 	mutex_unlock(&local->sta_mtx);
1391 
1392 	if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1393 	     sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1394 	    sta->known_smps_mode != sta->sdata->bss->req_smps &&
1395 	    test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1396 	    sta_info_tx_streams(sta) != 1) {
1397 		ht_dbg(sta->sdata,
1398 		       "%pM just authorized and MIMO capable - update SMPS\n",
1399 		       sta->sta.addr);
1400 		ieee80211_send_smps_action(sta->sdata,
1401 			sta->sdata->bss->req_smps,
1402 			sta->sta.addr,
1403 			sta->sdata->vif.bss_conf.bssid);
1404 	}
1405 
1406 	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1407 	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1408 		ieee80211_recalc_ps(local, -1);
1409 		ieee80211_recalc_ps_vif(sdata);
1410 	}
1411 
1412 	return 0;
1413 out_err:
1414 	mutex_unlock(&local->sta_mtx);
1415 	return err;
1416 }
1417 
1418 #ifdef CONFIG_MAC80211_MESH
1419 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1420 			       const u8 *dst, const u8 *next_hop)
1421 {
1422 	struct ieee80211_sub_if_data *sdata;
1423 	struct mesh_path *mpath;
1424 	struct sta_info *sta;
1425 
1426 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1427 
1428 	rcu_read_lock();
1429 	sta = sta_info_get(sdata, next_hop);
1430 	if (!sta) {
1431 		rcu_read_unlock();
1432 		return -ENOENT;
1433 	}
1434 
1435 	mpath = mesh_path_add(sdata, dst);
1436 	if (IS_ERR(mpath)) {
1437 		rcu_read_unlock();
1438 		return PTR_ERR(mpath);
1439 	}
1440 
1441 	mesh_path_fix_nexthop(mpath, sta);
1442 
1443 	rcu_read_unlock();
1444 	return 0;
1445 }
1446 
1447 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1448 			       const u8 *dst)
1449 {
1450 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451 
1452 	if (dst)
1453 		return mesh_path_del(sdata, dst);
1454 
1455 	mesh_path_flush_by_iface(sdata);
1456 	return 0;
1457 }
1458 
1459 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1460 				  const u8 *dst, const u8 *next_hop)
1461 {
1462 	struct ieee80211_sub_if_data *sdata;
1463 	struct mesh_path *mpath;
1464 	struct sta_info *sta;
1465 
1466 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1467 
1468 	rcu_read_lock();
1469 
1470 	sta = sta_info_get(sdata, next_hop);
1471 	if (!sta) {
1472 		rcu_read_unlock();
1473 		return -ENOENT;
1474 	}
1475 
1476 	mpath = mesh_path_lookup(sdata, dst);
1477 	if (!mpath) {
1478 		rcu_read_unlock();
1479 		return -ENOENT;
1480 	}
1481 
1482 	mesh_path_fix_nexthop(mpath, sta);
1483 
1484 	rcu_read_unlock();
1485 	return 0;
1486 }
1487 
1488 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1489 			    struct mpath_info *pinfo)
1490 {
1491 	struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1492 
1493 	if (next_hop_sta)
1494 		memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1495 	else
1496 		eth_zero_addr(next_hop);
1497 
1498 	memset(pinfo, 0, sizeof(*pinfo));
1499 
1500 	pinfo->generation = mesh_paths_generation;
1501 
1502 	pinfo->filled = MPATH_INFO_FRAME_QLEN |
1503 			MPATH_INFO_SN |
1504 			MPATH_INFO_METRIC |
1505 			MPATH_INFO_EXPTIME |
1506 			MPATH_INFO_DISCOVERY_TIMEOUT |
1507 			MPATH_INFO_DISCOVERY_RETRIES |
1508 			MPATH_INFO_FLAGS;
1509 
1510 	pinfo->frame_qlen = mpath->frame_queue.qlen;
1511 	pinfo->sn = mpath->sn;
1512 	pinfo->metric = mpath->metric;
1513 	if (time_before(jiffies, mpath->exp_time))
1514 		pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1515 	pinfo->discovery_timeout =
1516 			jiffies_to_msecs(mpath->discovery_timeout);
1517 	pinfo->discovery_retries = mpath->discovery_retries;
1518 	if (mpath->flags & MESH_PATH_ACTIVE)
1519 		pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1520 	if (mpath->flags & MESH_PATH_RESOLVING)
1521 		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1522 	if (mpath->flags & MESH_PATH_SN_VALID)
1523 		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1524 	if (mpath->flags & MESH_PATH_FIXED)
1525 		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1526 	if (mpath->flags & MESH_PATH_RESOLVED)
1527 		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1528 }
1529 
1530 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1531 			       u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1532 
1533 {
1534 	struct ieee80211_sub_if_data *sdata;
1535 	struct mesh_path *mpath;
1536 
1537 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1538 
1539 	rcu_read_lock();
1540 	mpath = mesh_path_lookup(sdata, dst);
1541 	if (!mpath) {
1542 		rcu_read_unlock();
1543 		return -ENOENT;
1544 	}
1545 	memcpy(dst, mpath->dst, ETH_ALEN);
1546 	mpath_set_pinfo(mpath, next_hop, pinfo);
1547 	rcu_read_unlock();
1548 	return 0;
1549 }
1550 
1551 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1552 				int idx, u8 *dst, u8 *next_hop,
1553 				struct mpath_info *pinfo)
1554 {
1555 	struct ieee80211_sub_if_data *sdata;
1556 	struct mesh_path *mpath;
1557 
1558 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1559 
1560 	rcu_read_lock();
1561 	mpath = mesh_path_lookup_by_idx(sdata, idx);
1562 	if (!mpath) {
1563 		rcu_read_unlock();
1564 		return -ENOENT;
1565 	}
1566 	memcpy(dst, mpath->dst, ETH_ALEN);
1567 	mpath_set_pinfo(mpath, next_hop, pinfo);
1568 	rcu_read_unlock();
1569 	return 0;
1570 }
1571 
1572 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1573 			  struct mpath_info *pinfo)
1574 {
1575 	memset(pinfo, 0, sizeof(*pinfo));
1576 	memcpy(mpp, mpath->mpp, ETH_ALEN);
1577 
1578 	pinfo->generation = mpp_paths_generation;
1579 }
1580 
1581 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1582 			     u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1583 
1584 {
1585 	struct ieee80211_sub_if_data *sdata;
1586 	struct mesh_path *mpath;
1587 
1588 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1589 
1590 	rcu_read_lock();
1591 	mpath = mpp_path_lookup(sdata, dst);
1592 	if (!mpath) {
1593 		rcu_read_unlock();
1594 		return -ENOENT;
1595 	}
1596 	memcpy(dst, mpath->dst, ETH_ALEN);
1597 	mpp_set_pinfo(mpath, mpp, pinfo);
1598 	rcu_read_unlock();
1599 	return 0;
1600 }
1601 
1602 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1603 			      int idx, u8 *dst, u8 *mpp,
1604 			      struct mpath_info *pinfo)
1605 {
1606 	struct ieee80211_sub_if_data *sdata;
1607 	struct mesh_path *mpath;
1608 
1609 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1610 
1611 	rcu_read_lock();
1612 	mpath = mpp_path_lookup_by_idx(sdata, idx);
1613 	if (!mpath) {
1614 		rcu_read_unlock();
1615 		return -ENOENT;
1616 	}
1617 	memcpy(dst, mpath->dst, ETH_ALEN);
1618 	mpp_set_pinfo(mpath, mpp, pinfo);
1619 	rcu_read_unlock();
1620 	return 0;
1621 }
1622 
1623 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1624 				struct net_device *dev,
1625 				struct mesh_config *conf)
1626 {
1627 	struct ieee80211_sub_if_data *sdata;
1628 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1629 
1630 	memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1631 	return 0;
1632 }
1633 
1634 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1635 {
1636 	return (mask >> (parm-1)) & 0x1;
1637 }
1638 
1639 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1640 		const struct mesh_setup *setup)
1641 {
1642 	u8 *new_ie;
1643 	const u8 *old_ie;
1644 	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1645 					struct ieee80211_sub_if_data, u.mesh);
1646 
1647 	/* allocate information elements */
1648 	new_ie = NULL;
1649 	old_ie = ifmsh->ie;
1650 
1651 	if (setup->ie_len) {
1652 		new_ie = kmemdup(setup->ie, setup->ie_len,
1653 				GFP_KERNEL);
1654 		if (!new_ie)
1655 			return -ENOMEM;
1656 	}
1657 	ifmsh->ie_len = setup->ie_len;
1658 	ifmsh->ie = new_ie;
1659 	kfree(old_ie);
1660 
1661 	/* now copy the rest of the setup parameters */
1662 	ifmsh->mesh_id_len = setup->mesh_id_len;
1663 	memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1664 	ifmsh->mesh_sp_id = setup->sync_method;
1665 	ifmsh->mesh_pp_id = setup->path_sel_proto;
1666 	ifmsh->mesh_pm_id = setup->path_metric;
1667 	ifmsh->user_mpm = setup->user_mpm;
1668 	ifmsh->mesh_auth_id = setup->auth_id;
1669 	ifmsh->security = IEEE80211_MESH_SEC_NONE;
1670 	if (setup->is_authenticated)
1671 		ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1672 	if (setup->is_secure)
1673 		ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1674 
1675 	/* mcast rate setting in Mesh Node */
1676 	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1677 						sizeof(setup->mcast_rate));
1678 	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1679 
1680 	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1681 	sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1682 
1683 	return 0;
1684 }
1685 
1686 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1687 					struct net_device *dev, u32 mask,
1688 					const struct mesh_config *nconf)
1689 {
1690 	struct mesh_config *conf;
1691 	struct ieee80211_sub_if_data *sdata;
1692 	struct ieee80211_if_mesh *ifmsh;
1693 
1694 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1695 	ifmsh = &sdata->u.mesh;
1696 
1697 	/* Set the config options which we are interested in setting */
1698 	conf = &(sdata->u.mesh.mshcfg);
1699 	if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1700 		conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1701 	if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1702 		conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1703 	if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1704 		conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1705 	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1706 		conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1707 	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1708 		conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1709 	if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1710 		conf->dot11MeshTTL = nconf->dot11MeshTTL;
1711 	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1712 		conf->element_ttl = nconf->element_ttl;
1713 	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1714 		if (ifmsh->user_mpm)
1715 			return -EBUSY;
1716 		conf->auto_open_plinks = nconf->auto_open_plinks;
1717 	}
1718 	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1719 		conf->dot11MeshNbrOffsetMaxNeighbor =
1720 			nconf->dot11MeshNbrOffsetMaxNeighbor;
1721 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1722 		conf->dot11MeshHWMPmaxPREQretries =
1723 			nconf->dot11MeshHWMPmaxPREQretries;
1724 	if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1725 		conf->path_refresh_time = nconf->path_refresh_time;
1726 	if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1727 		conf->min_discovery_timeout = nconf->min_discovery_timeout;
1728 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1729 		conf->dot11MeshHWMPactivePathTimeout =
1730 			nconf->dot11MeshHWMPactivePathTimeout;
1731 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1732 		conf->dot11MeshHWMPpreqMinInterval =
1733 			nconf->dot11MeshHWMPpreqMinInterval;
1734 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1735 		conf->dot11MeshHWMPperrMinInterval =
1736 			nconf->dot11MeshHWMPperrMinInterval;
1737 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1738 			   mask))
1739 		conf->dot11MeshHWMPnetDiameterTraversalTime =
1740 			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1741 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1742 		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1743 		ieee80211_mesh_root_setup(ifmsh);
1744 	}
1745 	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1746 		/* our current gate announcement implementation rides on root
1747 		 * announcements, so require this ifmsh to also be a root node
1748 		 * */
1749 		if (nconf->dot11MeshGateAnnouncementProtocol &&
1750 		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1751 			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1752 			ieee80211_mesh_root_setup(ifmsh);
1753 		}
1754 		conf->dot11MeshGateAnnouncementProtocol =
1755 			nconf->dot11MeshGateAnnouncementProtocol;
1756 	}
1757 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1758 		conf->dot11MeshHWMPRannInterval =
1759 			nconf->dot11MeshHWMPRannInterval;
1760 	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1761 		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1762 	if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1763 		/* our RSSI threshold implementation is supported only for
1764 		 * devices that report signal in dBm.
1765 		 */
1766 		if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1767 			return -ENOTSUPP;
1768 		conf->rssi_threshold = nconf->rssi_threshold;
1769 	}
1770 	if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1771 		conf->ht_opmode = nconf->ht_opmode;
1772 		sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1773 		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1774 	}
1775 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1776 		conf->dot11MeshHWMPactivePathToRootTimeout =
1777 			nconf->dot11MeshHWMPactivePathToRootTimeout;
1778 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1779 		conf->dot11MeshHWMProotInterval =
1780 			nconf->dot11MeshHWMProotInterval;
1781 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1782 		conf->dot11MeshHWMPconfirmationInterval =
1783 			nconf->dot11MeshHWMPconfirmationInterval;
1784 	if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1785 		conf->power_mode = nconf->power_mode;
1786 		ieee80211_mps_local_status_update(sdata);
1787 	}
1788 	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1789 		conf->dot11MeshAwakeWindowDuration =
1790 			nconf->dot11MeshAwakeWindowDuration;
1791 	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1792 		conf->plink_timeout = nconf->plink_timeout;
1793 	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1794 	return 0;
1795 }
1796 
1797 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1798 			       const struct mesh_config *conf,
1799 			       const struct mesh_setup *setup)
1800 {
1801 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1802 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1803 	int err;
1804 
1805 	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1806 	err = copy_mesh_setup(ifmsh, setup);
1807 	if (err)
1808 		return err;
1809 
1810 	/* can mesh use other SMPS modes? */
1811 	sdata->smps_mode = IEEE80211_SMPS_OFF;
1812 	sdata->needed_rx_chains = sdata->local->rx_chains;
1813 
1814 	mutex_lock(&sdata->local->mtx);
1815 	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1816 					IEEE80211_CHANCTX_SHARED);
1817 	mutex_unlock(&sdata->local->mtx);
1818 	if (err)
1819 		return err;
1820 
1821 	return ieee80211_start_mesh(sdata);
1822 }
1823 
1824 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1825 {
1826 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1827 
1828 	ieee80211_stop_mesh(sdata);
1829 	mutex_lock(&sdata->local->mtx);
1830 	ieee80211_vif_release_channel(sdata);
1831 	mutex_unlock(&sdata->local->mtx);
1832 
1833 	return 0;
1834 }
1835 #endif
1836 
1837 static int ieee80211_change_bss(struct wiphy *wiphy,
1838 				struct net_device *dev,
1839 				struct bss_parameters *params)
1840 {
1841 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1842 	enum ieee80211_band band;
1843 	u32 changed = 0;
1844 
1845 	if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1846 		return -ENOENT;
1847 
1848 	band = ieee80211_get_sdata_band(sdata);
1849 
1850 	if (params->use_cts_prot >= 0) {
1851 		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1852 		changed |= BSS_CHANGED_ERP_CTS_PROT;
1853 	}
1854 	if (params->use_short_preamble >= 0) {
1855 		sdata->vif.bss_conf.use_short_preamble =
1856 			params->use_short_preamble;
1857 		changed |= BSS_CHANGED_ERP_PREAMBLE;
1858 	}
1859 
1860 	if (!sdata->vif.bss_conf.use_short_slot &&
1861 	    band == IEEE80211_BAND_5GHZ) {
1862 		sdata->vif.bss_conf.use_short_slot = true;
1863 		changed |= BSS_CHANGED_ERP_SLOT;
1864 	}
1865 
1866 	if (params->use_short_slot_time >= 0) {
1867 		sdata->vif.bss_conf.use_short_slot =
1868 			params->use_short_slot_time;
1869 		changed |= BSS_CHANGED_ERP_SLOT;
1870 	}
1871 
1872 	if (params->basic_rates) {
1873 		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1874 					 wiphy->bands[band],
1875 					 params->basic_rates,
1876 					 params->basic_rates_len,
1877 					 &sdata->vif.bss_conf.basic_rates);
1878 		changed |= BSS_CHANGED_BASIC_RATES;
1879 	}
1880 
1881 	if (params->ap_isolate >= 0) {
1882 		if (params->ap_isolate)
1883 			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1884 		else
1885 			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1886 	}
1887 
1888 	if (params->ht_opmode >= 0) {
1889 		sdata->vif.bss_conf.ht_operation_mode =
1890 			(u16) params->ht_opmode;
1891 		changed |= BSS_CHANGED_HT;
1892 	}
1893 
1894 	if (params->p2p_ctwindow >= 0) {
1895 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1896 					~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1897 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1898 			params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1899 		changed |= BSS_CHANGED_P2P_PS;
1900 	}
1901 
1902 	if (params->p2p_opp_ps > 0) {
1903 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1904 					IEEE80211_P2P_OPPPS_ENABLE_BIT;
1905 		changed |= BSS_CHANGED_P2P_PS;
1906 	} else if (params->p2p_opp_ps == 0) {
1907 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1908 					~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1909 		changed |= BSS_CHANGED_P2P_PS;
1910 	}
1911 
1912 	ieee80211_bss_info_change_notify(sdata, changed);
1913 
1914 	return 0;
1915 }
1916 
1917 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1918 				    struct net_device *dev,
1919 				    struct ieee80211_txq_params *params)
1920 {
1921 	struct ieee80211_local *local = wiphy_priv(wiphy);
1922 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1923 	struct ieee80211_tx_queue_params p;
1924 
1925 	if (!local->ops->conf_tx)
1926 		return -EOPNOTSUPP;
1927 
1928 	if (local->hw.queues < IEEE80211_NUM_ACS)
1929 		return -EOPNOTSUPP;
1930 
1931 	memset(&p, 0, sizeof(p));
1932 	p.aifs = params->aifs;
1933 	p.cw_max = params->cwmax;
1934 	p.cw_min = params->cwmin;
1935 	p.txop = params->txop;
1936 
1937 	/*
1938 	 * Setting tx queue params disables u-apsd because it's only
1939 	 * called in master mode.
1940 	 */
1941 	p.uapsd = false;
1942 
1943 	sdata->tx_conf[params->ac] = p;
1944 	if (drv_conf_tx(local, sdata, params->ac, &p)) {
1945 		wiphy_debug(local->hw.wiphy,
1946 			    "failed to set TX queue parameters for AC %d\n",
1947 			    params->ac);
1948 		return -EINVAL;
1949 	}
1950 
1951 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1952 
1953 	return 0;
1954 }
1955 
1956 #ifdef CONFIG_PM
1957 static int ieee80211_suspend(struct wiphy *wiphy,
1958 			     struct cfg80211_wowlan *wowlan)
1959 {
1960 	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1961 }
1962 
1963 static int ieee80211_resume(struct wiphy *wiphy)
1964 {
1965 	return __ieee80211_resume(wiphy_priv(wiphy));
1966 }
1967 #else
1968 #define ieee80211_suspend NULL
1969 #define ieee80211_resume NULL
1970 #endif
1971 
1972 static int ieee80211_scan(struct wiphy *wiphy,
1973 			  struct cfg80211_scan_request *req)
1974 {
1975 	struct ieee80211_sub_if_data *sdata;
1976 
1977 	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1978 
1979 	switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1980 	case NL80211_IFTYPE_STATION:
1981 	case NL80211_IFTYPE_ADHOC:
1982 	case NL80211_IFTYPE_MESH_POINT:
1983 	case NL80211_IFTYPE_P2P_CLIENT:
1984 	case NL80211_IFTYPE_P2P_DEVICE:
1985 		break;
1986 	case NL80211_IFTYPE_P2P_GO:
1987 		if (sdata->local->ops->hw_scan)
1988 			break;
1989 		/*
1990 		 * FIXME: implement NoA while scanning in software,
1991 		 * for now fall through to allow scanning only when
1992 		 * beaconing hasn't been configured yet
1993 		 */
1994 	case NL80211_IFTYPE_AP:
1995 		/*
1996 		 * If the scan has been forced (and the driver supports
1997 		 * forcing), don't care about being beaconing already.
1998 		 * This will create problems to the attached stations (e.g. all
1999 		 * the  frames sent while scanning on other channel will be
2000 		 * lost)
2001 		 */
2002 		if (sdata->u.ap.beacon &&
2003 		    (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2004 		     !(req->flags & NL80211_SCAN_FLAG_AP)))
2005 			return -EOPNOTSUPP;
2006 		break;
2007 	default:
2008 		return -EOPNOTSUPP;
2009 	}
2010 
2011 	return ieee80211_request_scan(sdata, req);
2012 }
2013 
2014 static int
2015 ieee80211_sched_scan_start(struct wiphy *wiphy,
2016 			   struct net_device *dev,
2017 			   struct cfg80211_sched_scan_request *req)
2018 {
2019 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2020 
2021 	if (!sdata->local->ops->sched_scan_start)
2022 		return -EOPNOTSUPP;
2023 
2024 	return ieee80211_request_sched_scan_start(sdata, req);
2025 }
2026 
2027 static int
2028 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2029 {
2030 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2031 
2032 	if (!sdata->local->ops->sched_scan_stop)
2033 		return -EOPNOTSUPP;
2034 
2035 	return ieee80211_request_sched_scan_stop(sdata);
2036 }
2037 
2038 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2039 			  struct cfg80211_auth_request *req)
2040 {
2041 	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2042 }
2043 
2044 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2045 			   struct cfg80211_assoc_request *req)
2046 {
2047 	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2048 }
2049 
2050 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2051 			    struct cfg80211_deauth_request *req)
2052 {
2053 	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2054 }
2055 
2056 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2057 			      struct cfg80211_disassoc_request *req)
2058 {
2059 	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2060 }
2061 
2062 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2063 			       struct cfg80211_ibss_params *params)
2064 {
2065 	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2066 }
2067 
2068 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2069 {
2070 	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2071 }
2072 
2073 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2074 			      struct ocb_setup *setup)
2075 {
2076 	return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2077 }
2078 
2079 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2080 {
2081 	return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2082 }
2083 
2084 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2085 				    int rate[IEEE80211_NUM_BANDS])
2086 {
2087 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2088 
2089 	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2090 	       sizeof(int) * IEEE80211_NUM_BANDS);
2091 
2092 	return 0;
2093 }
2094 
2095 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2096 {
2097 	struct ieee80211_local *local = wiphy_priv(wiphy);
2098 	int err;
2099 
2100 	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2101 		ieee80211_check_fast_xmit_all(local);
2102 
2103 		err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2104 
2105 		if (err) {
2106 			ieee80211_check_fast_xmit_all(local);
2107 			return err;
2108 		}
2109 	}
2110 
2111 	if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2112 	    (changed & WIPHY_PARAM_DYN_ACK)) {
2113 		s16 coverage_class;
2114 
2115 		coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2116 					wiphy->coverage_class : -1;
2117 		err = drv_set_coverage_class(local, coverage_class);
2118 
2119 		if (err)
2120 			return err;
2121 	}
2122 
2123 	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2124 		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2125 
2126 		if (err)
2127 			return err;
2128 	}
2129 
2130 	if (changed & WIPHY_PARAM_RETRY_SHORT) {
2131 		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2132 			return -EINVAL;
2133 		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2134 	}
2135 	if (changed & WIPHY_PARAM_RETRY_LONG) {
2136 		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2137 			return -EINVAL;
2138 		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2139 	}
2140 	if (changed &
2141 	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2142 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2143 
2144 	return 0;
2145 }
2146 
2147 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2148 				  struct wireless_dev *wdev,
2149 				  enum nl80211_tx_power_setting type, int mbm)
2150 {
2151 	struct ieee80211_local *local = wiphy_priv(wiphy);
2152 	struct ieee80211_sub_if_data *sdata;
2153 	enum nl80211_tx_power_setting txp_type = type;
2154 	bool update_txp_type = false;
2155 
2156 	if (wdev) {
2157 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2158 
2159 		switch (type) {
2160 		case NL80211_TX_POWER_AUTOMATIC:
2161 			sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2162 			txp_type = NL80211_TX_POWER_LIMITED;
2163 			break;
2164 		case NL80211_TX_POWER_LIMITED:
2165 		case NL80211_TX_POWER_FIXED:
2166 			if (mbm < 0 || (mbm % 100))
2167 				return -EOPNOTSUPP;
2168 			sdata->user_power_level = MBM_TO_DBM(mbm);
2169 			break;
2170 		}
2171 
2172 		if (txp_type != sdata->vif.bss_conf.txpower_type) {
2173 			update_txp_type = true;
2174 			sdata->vif.bss_conf.txpower_type = txp_type;
2175 		}
2176 
2177 		ieee80211_recalc_txpower(sdata, update_txp_type);
2178 
2179 		return 0;
2180 	}
2181 
2182 	switch (type) {
2183 	case NL80211_TX_POWER_AUTOMATIC:
2184 		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2185 		txp_type = NL80211_TX_POWER_LIMITED;
2186 		break;
2187 	case NL80211_TX_POWER_LIMITED:
2188 	case NL80211_TX_POWER_FIXED:
2189 		if (mbm < 0 || (mbm % 100))
2190 			return -EOPNOTSUPP;
2191 		local->user_power_level = MBM_TO_DBM(mbm);
2192 		break;
2193 	}
2194 
2195 	mutex_lock(&local->iflist_mtx);
2196 	list_for_each_entry(sdata, &local->interfaces, list) {
2197 		sdata->user_power_level = local->user_power_level;
2198 		if (txp_type != sdata->vif.bss_conf.txpower_type)
2199 			update_txp_type = true;
2200 		sdata->vif.bss_conf.txpower_type = txp_type;
2201 	}
2202 	list_for_each_entry(sdata, &local->interfaces, list)
2203 		ieee80211_recalc_txpower(sdata, update_txp_type);
2204 	mutex_unlock(&local->iflist_mtx);
2205 
2206 	return 0;
2207 }
2208 
2209 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2210 				  struct wireless_dev *wdev,
2211 				  int *dbm)
2212 {
2213 	struct ieee80211_local *local = wiphy_priv(wiphy);
2214 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2215 
2216 	if (local->ops->get_txpower)
2217 		return drv_get_txpower(local, sdata, dbm);
2218 
2219 	if (!local->use_chanctx)
2220 		*dbm = local->hw.conf.power_level;
2221 	else
2222 		*dbm = sdata->vif.bss_conf.txpower;
2223 
2224 	return 0;
2225 }
2226 
2227 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2228 				  const u8 *addr)
2229 {
2230 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2231 
2232 	memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2233 
2234 	return 0;
2235 }
2236 
2237 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2238 {
2239 	struct ieee80211_local *local = wiphy_priv(wiphy);
2240 
2241 	drv_rfkill_poll(local);
2242 }
2243 
2244 #ifdef CONFIG_NL80211_TESTMODE
2245 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2246 				  struct wireless_dev *wdev,
2247 				  void *data, int len)
2248 {
2249 	struct ieee80211_local *local = wiphy_priv(wiphy);
2250 	struct ieee80211_vif *vif = NULL;
2251 
2252 	if (!local->ops->testmode_cmd)
2253 		return -EOPNOTSUPP;
2254 
2255 	if (wdev) {
2256 		struct ieee80211_sub_if_data *sdata;
2257 
2258 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2259 		if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2260 			vif = &sdata->vif;
2261 	}
2262 
2263 	return local->ops->testmode_cmd(&local->hw, vif, data, len);
2264 }
2265 
2266 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2267 				   struct sk_buff *skb,
2268 				   struct netlink_callback *cb,
2269 				   void *data, int len)
2270 {
2271 	struct ieee80211_local *local = wiphy_priv(wiphy);
2272 
2273 	if (!local->ops->testmode_dump)
2274 		return -EOPNOTSUPP;
2275 
2276 	return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2277 }
2278 #endif
2279 
2280 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2281 				enum ieee80211_smps_mode smps_mode)
2282 {
2283 	struct sta_info *sta;
2284 	enum ieee80211_smps_mode old_req;
2285 
2286 	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2287 		return -EINVAL;
2288 
2289 	if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2290 		return 0;
2291 
2292 	old_req = sdata->u.ap.req_smps;
2293 	sdata->u.ap.req_smps = smps_mode;
2294 
2295 	/* AUTOMATIC doesn't mean much for AP - don't allow it */
2296 	if (old_req == smps_mode ||
2297 	    smps_mode == IEEE80211_SMPS_AUTOMATIC)
2298 		return 0;
2299 
2300 	 /* If no associated stations, there's no need to do anything */
2301 	if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2302 		sdata->smps_mode = smps_mode;
2303 		ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2304 		return 0;
2305 	}
2306 
2307 	ht_dbg(sdata,
2308 	       "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2309 	       smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2310 
2311 	mutex_lock(&sdata->local->sta_mtx);
2312 	list_for_each_entry(sta, &sdata->local->sta_list, list) {
2313 		/*
2314 		 * Only stations associated to our AP and
2315 		 * associated VLANs
2316 		 */
2317 		if (sta->sdata->bss != &sdata->u.ap)
2318 			continue;
2319 
2320 		/* This station doesn't support MIMO - skip it */
2321 		if (sta_info_tx_streams(sta) == 1)
2322 			continue;
2323 
2324 		/*
2325 		 * Don't wake up a STA just to send the action frame
2326 		 * unless we are getting more restrictive.
2327 		 */
2328 		if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2329 		    !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2330 						   smps_mode)) {
2331 			ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2332 			       sta->sta.addr);
2333 			continue;
2334 		}
2335 
2336 		/*
2337 		 * If the STA is not authorized, wait until it gets
2338 		 * authorized and the action frame will be sent then.
2339 		 */
2340 		if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2341 			continue;
2342 
2343 		ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2344 		ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2345 					   sdata->vif.bss_conf.bssid);
2346 	}
2347 	mutex_unlock(&sdata->local->sta_mtx);
2348 
2349 	sdata->smps_mode = smps_mode;
2350 	ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2351 
2352 	return 0;
2353 }
2354 
2355 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2356 				 enum ieee80211_smps_mode smps_mode)
2357 {
2358 	const u8 *ap;
2359 	enum ieee80211_smps_mode old_req;
2360 	int err;
2361 
2362 	lockdep_assert_held(&sdata->wdev.mtx);
2363 
2364 	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2365 		return -EINVAL;
2366 
2367 	old_req = sdata->u.mgd.req_smps;
2368 	sdata->u.mgd.req_smps = smps_mode;
2369 
2370 	if (old_req == smps_mode &&
2371 	    smps_mode != IEEE80211_SMPS_AUTOMATIC)
2372 		return 0;
2373 
2374 	/*
2375 	 * If not associated, or current association is not an HT
2376 	 * association, there's no need to do anything, just store
2377 	 * the new value until we associate.
2378 	 */
2379 	if (!sdata->u.mgd.associated ||
2380 	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2381 		return 0;
2382 
2383 	ap = sdata->u.mgd.associated->bssid;
2384 
2385 	if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2386 		if (sdata->u.mgd.powersave)
2387 			smps_mode = IEEE80211_SMPS_DYNAMIC;
2388 		else
2389 			smps_mode = IEEE80211_SMPS_OFF;
2390 	}
2391 
2392 	/* send SM PS frame to AP */
2393 	err = ieee80211_send_smps_action(sdata, smps_mode,
2394 					 ap, ap);
2395 	if (err)
2396 		sdata->u.mgd.req_smps = old_req;
2397 
2398 	return err;
2399 }
2400 
2401 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2402 				    bool enabled, int timeout)
2403 {
2404 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2405 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2406 
2407 	if (sdata->vif.type != NL80211_IFTYPE_STATION)
2408 		return -EOPNOTSUPP;
2409 
2410 	if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2411 		return -EOPNOTSUPP;
2412 
2413 	if (enabled == sdata->u.mgd.powersave &&
2414 	    timeout == local->dynamic_ps_forced_timeout)
2415 		return 0;
2416 
2417 	sdata->u.mgd.powersave = enabled;
2418 	local->dynamic_ps_forced_timeout = timeout;
2419 
2420 	/* no change, but if automatic follow powersave */
2421 	sdata_lock(sdata);
2422 	__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2423 	sdata_unlock(sdata);
2424 
2425 	if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2426 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2427 
2428 	ieee80211_recalc_ps(local, -1);
2429 	ieee80211_recalc_ps_vif(sdata);
2430 
2431 	return 0;
2432 }
2433 
2434 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2435 					 struct net_device *dev,
2436 					 s32 rssi_thold, u32 rssi_hyst)
2437 {
2438 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2439 	struct ieee80211_vif *vif = &sdata->vif;
2440 	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2441 
2442 	if (rssi_thold == bss_conf->cqm_rssi_thold &&
2443 	    rssi_hyst == bss_conf->cqm_rssi_hyst)
2444 		return 0;
2445 
2446 	bss_conf->cqm_rssi_thold = rssi_thold;
2447 	bss_conf->cqm_rssi_hyst = rssi_hyst;
2448 
2449 	/* tell the driver upon association, unless already associated */
2450 	if (sdata->u.mgd.associated &&
2451 	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2452 		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2453 
2454 	return 0;
2455 }
2456 
2457 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2458 				      struct net_device *dev,
2459 				      const u8 *addr,
2460 				      const struct cfg80211_bitrate_mask *mask)
2461 {
2462 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2463 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2464 	int i, ret;
2465 
2466 	if (!ieee80211_sdata_running(sdata))
2467 		return -ENETDOWN;
2468 
2469 	if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2470 		ret = drv_set_bitrate_mask(local, sdata, mask);
2471 		if (ret)
2472 			return ret;
2473 	}
2474 
2475 	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2476 		struct ieee80211_supported_band *sband = wiphy->bands[i];
2477 		int j;
2478 
2479 		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2480 		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2481 		       sizeof(mask->control[i].ht_mcs));
2482 
2483 		sdata->rc_has_mcs_mask[i] = false;
2484 		if (!sband)
2485 			continue;
2486 
2487 		for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2488 			if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2489 				sdata->rc_has_mcs_mask[i] = true;
2490 				break;
2491 			}
2492 	}
2493 
2494 	return 0;
2495 }
2496 
2497 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2498 					   struct ieee80211_roc_work *new_roc,
2499 					   struct ieee80211_roc_work *cur_roc)
2500 {
2501 	unsigned long now = jiffies;
2502 	unsigned long remaining = cur_roc->hw_start_time +
2503 				  msecs_to_jiffies(cur_roc->duration) -
2504 				  now;
2505 
2506 	if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2507 		return false;
2508 
2509 	/* if it doesn't fit entirely, schedule a new one */
2510 	if (new_roc->duration > jiffies_to_msecs(remaining))
2511 		return false;
2512 
2513 	ieee80211_handle_roc_started(new_roc);
2514 
2515 	/* add to dependents so we send the expired event properly */
2516 	list_add_tail(&new_roc->list, &cur_roc->dependents);
2517 	return true;
2518 }
2519 
2520 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2521 {
2522 	lockdep_assert_held(&local->mtx);
2523 
2524 	local->roc_cookie_counter++;
2525 
2526 	/* wow, you wrapped 64 bits ... more likely a bug */
2527 	if (WARN_ON(local->roc_cookie_counter == 0))
2528 		local->roc_cookie_counter++;
2529 
2530 	return local->roc_cookie_counter;
2531 }
2532 
2533 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2534 				    struct ieee80211_sub_if_data *sdata,
2535 				    struct ieee80211_channel *channel,
2536 				    unsigned int duration, u64 *cookie,
2537 				    struct sk_buff *txskb,
2538 				    enum ieee80211_roc_type type)
2539 {
2540 	struct ieee80211_roc_work *roc, *tmp;
2541 	bool queued = false;
2542 	int ret;
2543 
2544 	lockdep_assert_held(&local->mtx);
2545 
2546 	if (local->use_chanctx && !local->ops->remain_on_channel)
2547 		return -EOPNOTSUPP;
2548 
2549 	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2550 	if (!roc)
2551 		return -ENOMEM;
2552 
2553 	/*
2554 	 * If the duration is zero, then the driver
2555 	 * wouldn't actually do anything. Set it to
2556 	 * 10 for now.
2557 	 *
2558 	 * TODO: cancel the off-channel operation
2559 	 *       when we get the SKB's TX status and
2560 	 *       the wait time was zero before.
2561 	 */
2562 	if (!duration)
2563 		duration = 10;
2564 
2565 	roc->chan = channel;
2566 	roc->duration = duration;
2567 	roc->req_duration = duration;
2568 	roc->frame = txskb;
2569 	roc->type = type;
2570 	roc->sdata = sdata;
2571 	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2572 	INIT_LIST_HEAD(&roc->dependents);
2573 
2574 	/*
2575 	 * cookie is either the roc cookie (for normal roc)
2576 	 * or the SKB (for mgmt TX)
2577 	 */
2578 	if (!txskb) {
2579 		roc->cookie = ieee80211_mgmt_tx_cookie(local);
2580 		*cookie = roc->cookie;
2581 	} else {
2582 		roc->mgmt_tx_cookie = *cookie;
2583 	}
2584 
2585 	/* if there's one pending or we're scanning, queue this one */
2586 	if (!list_empty(&local->roc_list) ||
2587 	    local->scanning || ieee80211_is_radar_required(local))
2588 		goto out_check_combine;
2589 
2590 	/* if not HW assist, just queue & schedule work */
2591 	if (!local->ops->remain_on_channel) {
2592 		ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2593 		goto out_queue;
2594 	}
2595 
2596 	/* otherwise actually kick it off here (for error handling) */
2597 
2598 	ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2599 	if (ret) {
2600 		kfree(roc);
2601 		return ret;
2602 	}
2603 
2604 	roc->started = true;
2605 	goto out_queue;
2606 
2607  out_check_combine:
2608 	list_for_each_entry(tmp, &local->roc_list, list) {
2609 		if (tmp->chan != channel || tmp->sdata != sdata)
2610 			continue;
2611 
2612 		/*
2613 		 * Extend this ROC if possible:
2614 		 *
2615 		 * If it hasn't started yet, just increase the duration
2616 		 * and add the new one to the list of dependents.
2617 		 * If the type of the new ROC has higher priority, modify the
2618 		 * type of the previous one to match that of the new one.
2619 		 */
2620 		if (!tmp->started) {
2621 			list_add_tail(&roc->list, &tmp->dependents);
2622 			tmp->duration = max(tmp->duration, roc->duration);
2623 			tmp->type = max(tmp->type, roc->type);
2624 			queued = true;
2625 			break;
2626 		}
2627 
2628 		/* If it has already started, it's more difficult ... */
2629 		if (local->ops->remain_on_channel) {
2630 			/*
2631 			 * In the offloaded ROC case, if it hasn't begun, add
2632 			 * this new one to the dependent list to be handled
2633 			 * when the master one begins. If it has begun,
2634 			 * check if it fits entirely within the existing one,
2635 			 * in which case it will just be dependent as well.
2636 			 * Otherwise, schedule it by itself.
2637 			 */
2638 			if (!tmp->hw_begun) {
2639 				list_add_tail(&roc->list, &tmp->dependents);
2640 				queued = true;
2641 				break;
2642 			}
2643 
2644 			if (ieee80211_coalesce_started_roc(local, roc, tmp))
2645 				queued = true;
2646 		} else if (del_timer_sync(&tmp->work.timer)) {
2647 			unsigned long new_end;
2648 
2649 			/*
2650 			 * In the software ROC case, cancel the timer, if
2651 			 * that fails then the finish work is already
2652 			 * queued/pending and thus we queue the new ROC
2653 			 * normally, if that succeeds then we can extend
2654 			 * the timer duration and TX the frame (if any.)
2655 			 */
2656 
2657 			list_add_tail(&roc->list, &tmp->dependents);
2658 			queued = true;
2659 
2660 			new_end = jiffies + msecs_to_jiffies(roc->duration);
2661 
2662 			/* ok, it was started & we canceled timer */
2663 			if (time_after(new_end, tmp->work.timer.expires))
2664 				mod_timer(&tmp->work.timer, new_end);
2665 			else
2666 				add_timer(&tmp->work.timer);
2667 
2668 			ieee80211_handle_roc_started(roc);
2669 		}
2670 		break;
2671 	}
2672 
2673  out_queue:
2674 	if (!queued)
2675 		list_add_tail(&roc->list, &local->roc_list);
2676 
2677 	return 0;
2678 }
2679 
2680 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2681 				       struct wireless_dev *wdev,
2682 				       struct ieee80211_channel *chan,
2683 				       unsigned int duration,
2684 				       u64 *cookie)
2685 {
2686 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2687 	struct ieee80211_local *local = sdata->local;
2688 	int ret;
2689 
2690 	mutex_lock(&local->mtx);
2691 	ret = ieee80211_start_roc_work(local, sdata, chan,
2692 				       duration, cookie, NULL,
2693 				       IEEE80211_ROC_TYPE_NORMAL);
2694 	mutex_unlock(&local->mtx);
2695 
2696 	return ret;
2697 }
2698 
2699 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2700 				u64 cookie, bool mgmt_tx)
2701 {
2702 	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2703 	int ret;
2704 
2705 	mutex_lock(&local->mtx);
2706 	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2707 		struct ieee80211_roc_work *dep, *tmp2;
2708 
2709 		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2710 			if (!mgmt_tx && dep->cookie != cookie)
2711 				continue;
2712 			else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2713 				continue;
2714 			/* found dependent item -- just remove it */
2715 			list_del(&dep->list);
2716 			mutex_unlock(&local->mtx);
2717 
2718 			ieee80211_roc_notify_destroy(dep, true);
2719 			return 0;
2720 		}
2721 
2722 		if (!mgmt_tx && roc->cookie != cookie)
2723 			continue;
2724 		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2725 			continue;
2726 
2727 		found = roc;
2728 		break;
2729 	}
2730 
2731 	if (!found) {
2732 		mutex_unlock(&local->mtx);
2733 		return -ENOENT;
2734 	}
2735 
2736 	/*
2737 	 * We found the item to cancel, so do that. Note that it
2738 	 * may have dependents, which we also cancel (and send
2739 	 * the expired signal for.) Not doing so would be quite
2740 	 * tricky here, but we may need to fix it later.
2741 	 */
2742 
2743 	if (local->ops->remain_on_channel) {
2744 		if (found->started) {
2745 			ret = drv_cancel_remain_on_channel(local);
2746 			if (WARN_ON_ONCE(ret)) {
2747 				mutex_unlock(&local->mtx);
2748 				return ret;
2749 			}
2750 		}
2751 
2752 		list_del(&found->list);
2753 
2754 		if (found->started)
2755 			ieee80211_start_next_roc(local);
2756 		mutex_unlock(&local->mtx);
2757 
2758 		ieee80211_roc_notify_destroy(found, true);
2759 	} else {
2760 		/* work may be pending so use it all the time */
2761 		found->abort = true;
2762 		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2763 
2764 		mutex_unlock(&local->mtx);
2765 
2766 		/* work will clean up etc */
2767 		flush_delayed_work(&found->work);
2768 		WARN_ON(!found->to_be_freed);
2769 		kfree(found);
2770 	}
2771 
2772 	return 0;
2773 }
2774 
2775 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2776 					      struct wireless_dev *wdev,
2777 					      u64 cookie)
2778 {
2779 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2780 	struct ieee80211_local *local = sdata->local;
2781 
2782 	return ieee80211_cancel_roc(local, cookie, false);
2783 }
2784 
2785 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2786 					   struct net_device *dev,
2787 					   struct cfg80211_chan_def *chandef,
2788 					   u32 cac_time_ms)
2789 {
2790 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2791 	struct ieee80211_local *local = sdata->local;
2792 	int err;
2793 
2794 	mutex_lock(&local->mtx);
2795 	if (!list_empty(&local->roc_list) || local->scanning) {
2796 		err = -EBUSY;
2797 		goto out_unlock;
2798 	}
2799 
2800 	/* whatever, but channel contexts should not complain about that one */
2801 	sdata->smps_mode = IEEE80211_SMPS_OFF;
2802 	sdata->needed_rx_chains = local->rx_chains;
2803 
2804 	err = ieee80211_vif_use_channel(sdata, chandef,
2805 					IEEE80211_CHANCTX_SHARED);
2806 	if (err)
2807 		goto out_unlock;
2808 
2809 	ieee80211_queue_delayed_work(&sdata->local->hw,
2810 				     &sdata->dfs_cac_timer_work,
2811 				     msecs_to_jiffies(cac_time_ms));
2812 
2813  out_unlock:
2814 	mutex_unlock(&local->mtx);
2815 	return err;
2816 }
2817 
2818 static struct cfg80211_beacon_data *
2819 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2820 {
2821 	struct cfg80211_beacon_data *new_beacon;
2822 	u8 *pos;
2823 	int len;
2824 
2825 	len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2826 	      beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2827 	      beacon->probe_resp_len;
2828 
2829 	new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2830 	if (!new_beacon)
2831 		return NULL;
2832 
2833 	pos = (u8 *)(new_beacon + 1);
2834 	if (beacon->head_len) {
2835 		new_beacon->head_len = beacon->head_len;
2836 		new_beacon->head = pos;
2837 		memcpy(pos, beacon->head, beacon->head_len);
2838 		pos += beacon->head_len;
2839 	}
2840 	if (beacon->tail_len) {
2841 		new_beacon->tail_len = beacon->tail_len;
2842 		new_beacon->tail = pos;
2843 		memcpy(pos, beacon->tail, beacon->tail_len);
2844 		pos += beacon->tail_len;
2845 	}
2846 	if (beacon->beacon_ies_len) {
2847 		new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2848 		new_beacon->beacon_ies = pos;
2849 		memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2850 		pos += beacon->beacon_ies_len;
2851 	}
2852 	if (beacon->proberesp_ies_len) {
2853 		new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2854 		new_beacon->proberesp_ies = pos;
2855 		memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2856 		pos += beacon->proberesp_ies_len;
2857 	}
2858 	if (beacon->assocresp_ies_len) {
2859 		new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2860 		new_beacon->assocresp_ies = pos;
2861 		memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2862 		pos += beacon->assocresp_ies_len;
2863 	}
2864 	if (beacon->probe_resp_len) {
2865 		new_beacon->probe_resp_len = beacon->probe_resp_len;
2866 		beacon->probe_resp = pos;
2867 		memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2868 		pos += beacon->probe_resp_len;
2869 	}
2870 
2871 	return new_beacon;
2872 }
2873 
2874 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2875 {
2876 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2877 
2878 	ieee80211_queue_work(&sdata->local->hw,
2879 			     &sdata->csa_finalize_work);
2880 }
2881 EXPORT_SYMBOL(ieee80211_csa_finish);
2882 
2883 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2884 					  u32 *changed)
2885 {
2886 	int err;
2887 
2888 	switch (sdata->vif.type) {
2889 	case NL80211_IFTYPE_AP:
2890 		err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2891 					      NULL);
2892 		kfree(sdata->u.ap.next_beacon);
2893 		sdata->u.ap.next_beacon = NULL;
2894 
2895 		if (err < 0)
2896 			return err;
2897 		*changed |= err;
2898 		break;
2899 	case NL80211_IFTYPE_ADHOC:
2900 		err = ieee80211_ibss_finish_csa(sdata);
2901 		if (err < 0)
2902 			return err;
2903 		*changed |= err;
2904 		break;
2905 #ifdef CONFIG_MAC80211_MESH
2906 	case NL80211_IFTYPE_MESH_POINT:
2907 		err = ieee80211_mesh_finish_csa(sdata);
2908 		if (err < 0)
2909 			return err;
2910 		*changed |= err;
2911 		break;
2912 #endif
2913 	default:
2914 		WARN_ON(1);
2915 		return -EINVAL;
2916 	}
2917 
2918 	return 0;
2919 }
2920 
2921 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2922 {
2923 	struct ieee80211_local *local = sdata->local;
2924 	u32 changed = 0;
2925 	int err;
2926 
2927 	sdata_assert_lock(sdata);
2928 	lockdep_assert_held(&local->mtx);
2929 	lockdep_assert_held(&local->chanctx_mtx);
2930 
2931 	/*
2932 	 * using reservation isn't immediate as it may be deferred until later
2933 	 * with multi-vif. once reservation is complete it will re-schedule the
2934 	 * work with no reserved_chanctx so verify chandef to check if it
2935 	 * completed successfully
2936 	 */
2937 
2938 	if (sdata->reserved_chanctx) {
2939 		/*
2940 		 * with multi-vif csa driver may call ieee80211_csa_finish()
2941 		 * many times while waiting for other interfaces to use their
2942 		 * reservations
2943 		 */
2944 		if (sdata->reserved_ready)
2945 			return 0;
2946 
2947 		return ieee80211_vif_use_reserved_context(sdata);
2948 	}
2949 
2950 	if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2951 					&sdata->csa_chandef))
2952 		return -EINVAL;
2953 
2954 	sdata->vif.csa_active = false;
2955 
2956 	err = ieee80211_set_after_csa_beacon(sdata, &changed);
2957 	if (err)
2958 		return err;
2959 
2960 	ieee80211_bss_info_change_notify(sdata, changed);
2961 
2962 	if (sdata->csa_block_tx) {
2963 		ieee80211_wake_vif_queues(local, sdata,
2964 					  IEEE80211_QUEUE_STOP_REASON_CSA);
2965 		sdata->csa_block_tx = false;
2966 	}
2967 
2968 	err = drv_post_channel_switch(sdata);
2969 	if (err)
2970 		return err;
2971 
2972 	cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2973 
2974 	return 0;
2975 }
2976 
2977 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2978 {
2979 	if (__ieee80211_csa_finalize(sdata)) {
2980 		sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2981 		cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2982 				    GFP_KERNEL);
2983 	}
2984 }
2985 
2986 void ieee80211_csa_finalize_work(struct work_struct *work)
2987 {
2988 	struct ieee80211_sub_if_data *sdata =
2989 		container_of(work, struct ieee80211_sub_if_data,
2990 			     csa_finalize_work);
2991 	struct ieee80211_local *local = sdata->local;
2992 
2993 	sdata_lock(sdata);
2994 	mutex_lock(&local->mtx);
2995 	mutex_lock(&local->chanctx_mtx);
2996 
2997 	/* AP might have been stopped while waiting for the lock. */
2998 	if (!sdata->vif.csa_active)
2999 		goto unlock;
3000 
3001 	if (!ieee80211_sdata_running(sdata))
3002 		goto unlock;
3003 
3004 	ieee80211_csa_finalize(sdata);
3005 
3006 unlock:
3007 	mutex_unlock(&local->chanctx_mtx);
3008 	mutex_unlock(&local->mtx);
3009 	sdata_unlock(sdata);
3010 }
3011 
3012 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3013 				    struct cfg80211_csa_settings *params,
3014 				    u32 *changed)
3015 {
3016 	struct ieee80211_csa_settings csa = {};
3017 	int err;
3018 
3019 	switch (sdata->vif.type) {
3020 	case NL80211_IFTYPE_AP:
3021 		sdata->u.ap.next_beacon =
3022 			cfg80211_beacon_dup(&params->beacon_after);
3023 		if (!sdata->u.ap.next_beacon)
3024 			return -ENOMEM;
3025 
3026 		/*
3027 		 * With a count of 0, we don't have to wait for any
3028 		 * TBTT before switching, so complete the CSA
3029 		 * immediately.  In theory, with a count == 1 we
3030 		 * should delay the switch until just before the next
3031 		 * TBTT, but that would complicate things so we switch
3032 		 * immediately too.  If we would delay the switch
3033 		 * until the next TBTT, we would have to set the probe
3034 		 * response here.
3035 		 *
3036 		 * TODO: A channel switch with count <= 1 without
3037 		 * sending a CSA action frame is kind of useless,
3038 		 * because the clients won't know we're changing
3039 		 * channels.  The action frame must be implemented
3040 		 * either here or in the userspace.
3041 		 */
3042 		if (params->count <= 1)
3043 			break;
3044 
3045 		if ((params->n_counter_offsets_beacon >
3046 		     IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3047 		    (params->n_counter_offsets_presp >
3048 		     IEEE80211_MAX_CSA_COUNTERS_NUM))
3049 			return -EINVAL;
3050 
3051 		csa.counter_offsets_beacon = params->counter_offsets_beacon;
3052 		csa.counter_offsets_presp = params->counter_offsets_presp;
3053 		csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3054 		csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3055 		csa.count = params->count;
3056 
3057 		err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3058 		if (err < 0) {
3059 			kfree(sdata->u.ap.next_beacon);
3060 			return err;
3061 		}
3062 		*changed |= err;
3063 
3064 		break;
3065 	case NL80211_IFTYPE_ADHOC:
3066 		if (!sdata->vif.bss_conf.ibss_joined)
3067 			return -EINVAL;
3068 
3069 		if (params->chandef.width != sdata->u.ibss.chandef.width)
3070 			return -EINVAL;
3071 
3072 		switch (params->chandef.width) {
3073 		case NL80211_CHAN_WIDTH_40:
3074 			if (cfg80211_get_chandef_type(&params->chandef) !=
3075 			    cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3076 				return -EINVAL;
3077 		case NL80211_CHAN_WIDTH_5:
3078 		case NL80211_CHAN_WIDTH_10:
3079 		case NL80211_CHAN_WIDTH_20_NOHT:
3080 		case NL80211_CHAN_WIDTH_20:
3081 			break;
3082 		default:
3083 			return -EINVAL;
3084 		}
3085 
3086 		/* changes into another band are not supported */
3087 		if (sdata->u.ibss.chandef.chan->band !=
3088 		    params->chandef.chan->band)
3089 			return -EINVAL;
3090 
3091 		/* see comments in the NL80211_IFTYPE_AP block */
3092 		if (params->count > 1) {
3093 			err = ieee80211_ibss_csa_beacon(sdata, params);
3094 			if (err < 0)
3095 				return err;
3096 			*changed |= err;
3097 		}
3098 
3099 		ieee80211_send_action_csa(sdata, params);
3100 
3101 		break;
3102 #ifdef CONFIG_MAC80211_MESH
3103 	case NL80211_IFTYPE_MESH_POINT: {
3104 		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3105 
3106 		if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3107 			return -EINVAL;
3108 
3109 		/* changes into another band are not supported */
3110 		if (sdata->vif.bss_conf.chandef.chan->band !=
3111 		    params->chandef.chan->band)
3112 			return -EINVAL;
3113 
3114 		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3115 			ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3116 			if (!ifmsh->pre_value)
3117 				ifmsh->pre_value = 1;
3118 			else
3119 				ifmsh->pre_value++;
3120 		}
3121 
3122 		/* see comments in the NL80211_IFTYPE_AP block */
3123 		if (params->count > 1) {
3124 			err = ieee80211_mesh_csa_beacon(sdata, params);
3125 			if (err < 0) {
3126 				ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3127 				return err;
3128 			}
3129 			*changed |= err;
3130 		}
3131 
3132 		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3133 			ieee80211_send_action_csa(sdata, params);
3134 
3135 		break;
3136 		}
3137 #endif
3138 	default:
3139 		return -EOPNOTSUPP;
3140 	}
3141 
3142 	return 0;
3143 }
3144 
3145 static int
3146 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3147 			   struct cfg80211_csa_settings *params)
3148 {
3149 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3150 	struct ieee80211_local *local = sdata->local;
3151 	struct ieee80211_channel_switch ch_switch;
3152 	struct ieee80211_chanctx_conf *conf;
3153 	struct ieee80211_chanctx *chanctx;
3154 	u32 changed = 0;
3155 	int err;
3156 
3157 	sdata_assert_lock(sdata);
3158 	lockdep_assert_held(&local->mtx);
3159 
3160 	if (!list_empty(&local->roc_list) || local->scanning)
3161 		return -EBUSY;
3162 
3163 	if (sdata->wdev.cac_started)
3164 		return -EBUSY;
3165 
3166 	if (cfg80211_chandef_identical(&params->chandef,
3167 				       &sdata->vif.bss_conf.chandef))
3168 		return -EINVAL;
3169 
3170 	/* don't allow another channel switch if one is already active. */
3171 	if (sdata->vif.csa_active)
3172 		return -EBUSY;
3173 
3174 	mutex_lock(&local->chanctx_mtx);
3175 	conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3176 					 lockdep_is_held(&local->chanctx_mtx));
3177 	if (!conf) {
3178 		err = -EBUSY;
3179 		goto out;
3180 	}
3181 
3182 	chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3183 	if (!chanctx) {
3184 		err = -EBUSY;
3185 		goto out;
3186 	}
3187 
3188 	ch_switch.timestamp = 0;
3189 	ch_switch.device_timestamp = 0;
3190 	ch_switch.block_tx = params->block_tx;
3191 	ch_switch.chandef = params->chandef;
3192 	ch_switch.count = params->count;
3193 
3194 	err = drv_pre_channel_switch(sdata, &ch_switch);
3195 	if (err)
3196 		goto out;
3197 
3198 	err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3199 					    chanctx->mode,
3200 					    params->radar_required);
3201 	if (err)
3202 		goto out;
3203 
3204 	/* if reservation is invalid then this will fail */
3205 	err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3206 	if (err) {
3207 		ieee80211_vif_unreserve_chanctx(sdata);
3208 		goto out;
3209 	}
3210 
3211 	err = ieee80211_set_csa_beacon(sdata, params, &changed);
3212 	if (err) {
3213 		ieee80211_vif_unreserve_chanctx(sdata);
3214 		goto out;
3215 	}
3216 
3217 	sdata->csa_chandef = params->chandef;
3218 	sdata->csa_block_tx = params->block_tx;
3219 	sdata->vif.csa_active = true;
3220 
3221 	if (sdata->csa_block_tx)
3222 		ieee80211_stop_vif_queues(local, sdata,
3223 					  IEEE80211_QUEUE_STOP_REASON_CSA);
3224 
3225 	cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3226 					  params->count);
3227 
3228 	if (changed) {
3229 		ieee80211_bss_info_change_notify(sdata, changed);
3230 		drv_channel_switch_beacon(sdata, &params->chandef);
3231 	} else {
3232 		/* if the beacon didn't change, we can finalize immediately */
3233 		ieee80211_csa_finalize(sdata);
3234 	}
3235 
3236 out:
3237 	mutex_unlock(&local->chanctx_mtx);
3238 	return err;
3239 }
3240 
3241 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3242 			     struct cfg80211_csa_settings *params)
3243 {
3244 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3245 	struct ieee80211_local *local = sdata->local;
3246 	int err;
3247 
3248 	mutex_lock(&local->mtx);
3249 	err = __ieee80211_channel_switch(wiphy, dev, params);
3250 	mutex_unlock(&local->mtx);
3251 
3252 	return err;
3253 }
3254 
3255 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3256 					      struct sk_buff *skb, u64 *cookie,
3257 					      gfp_t gfp)
3258 {
3259 	unsigned long spin_flags;
3260 	struct sk_buff *ack_skb;
3261 	int id;
3262 
3263 	ack_skb = skb_copy(skb, gfp);
3264 	if (!ack_skb)
3265 		return ERR_PTR(-ENOMEM);
3266 
3267 	spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3268 	id = idr_alloc(&local->ack_status_frames, ack_skb,
3269 		       1, 0x10000, GFP_ATOMIC);
3270 	spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3271 
3272 	if (id < 0) {
3273 		kfree_skb(ack_skb);
3274 		return ERR_PTR(-ENOMEM);
3275 	}
3276 
3277 	IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3278 
3279 	*cookie = ieee80211_mgmt_tx_cookie(local);
3280 	IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3281 
3282 	return ack_skb;
3283 }
3284 
3285 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3286 			     struct cfg80211_mgmt_tx_params *params,
3287 			     u64 *cookie)
3288 {
3289 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3290 	struct ieee80211_local *local = sdata->local;
3291 	struct sk_buff *skb, *ack_skb;
3292 	struct sta_info *sta;
3293 	const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3294 	bool need_offchan = false;
3295 	u32 flags;
3296 	int ret;
3297 	u8 *data;
3298 
3299 	if (params->dont_wait_for_ack)
3300 		flags = IEEE80211_TX_CTL_NO_ACK;
3301 	else
3302 		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3303 			IEEE80211_TX_CTL_REQ_TX_STATUS;
3304 
3305 	if (params->no_cck)
3306 		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3307 
3308 	switch (sdata->vif.type) {
3309 	case NL80211_IFTYPE_ADHOC:
3310 		if (!sdata->vif.bss_conf.ibss_joined)
3311 			need_offchan = true;
3312 		/* fall through */
3313 #ifdef CONFIG_MAC80211_MESH
3314 	case NL80211_IFTYPE_MESH_POINT:
3315 		if (ieee80211_vif_is_mesh(&sdata->vif) &&
3316 		    !sdata->u.mesh.mesh_id_len)
3317 			need_offchan = true;
3318 		/* fall through */
3319 #endif
3320 	case NL80211_IFTYPE_AP:
3321 	case NL80211_IFTYPE_AP_VLAN:
3322 	case NL80211_IFTYPE_P2P_GO:
3323 		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3324 		    !ieee80211_vif_is_mesh(&sdata->vif) &&
3325 		    !rcu_access_pointer(sdata->bss->beacon))
3326 			need_offchan = true;
3327 		if (!ieee80211_is_action(mgmt->frame_control) ||
3328 		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3329 		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3330 		    mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3331 			break;
3332 		rcu_read_lock();
3333 		sta = sta_info_get(sdata, mgmt->da);
3334 		rcu_read_unlock();
3335 		if (!sta)
3336 			return -ENOLINK;
3337 		break;
3338 	case NL80211_IFTYPE_STATION:
3339 	case NL80211_IFTYPE_P2P_CLIENT:
3340 		sdata_lock(sdata);
3341 		if (!sdata->u.mgd.associated ||
3342 		    (params->offchan && params->wait &&
3343 		     local->ops->remain_on_channel &&
3344 		     memcmp(sdata->u.mgd.associated->bssid,
3345 			    mgmt->bssid, ETH_ALEN)))
3346 			need_offchan = true;
3347 		sdata_unlock(sdata);
3348 		break;
3349 	case NL80211_IFTYPE_P2P_DEVICE:
3350 		need_offchan = true;
3351 		break;
3352 	default:
3353 		return -EOPNOTSUPP;
3354 	}
3355 
3356 	/* configurations requiring offchan cannot work if no channel has been
3357 	 * specified
3358 	 */
3359 	if (need_offchan && !params->chan)
3360 		return -EINVAL;
3361 
3362 	mutex_lock(&local->mtx);
3363 
3364 	/* Check if the operating channel is the requested channel */
3365 	if (!need_offchan) {
3366 		struct ieee80211_chanctx_conf *chanctx_conf;
3367 
3368 		rcu_read_lock();
3369 		chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3370 
3371 		if (chanctx_conf) {
3372 			need_offchan = params->chan &&
3373 				       (params->chan !=
3374 					chanctx_conf->def.chan);
3375 		} else if (!params->chan) {
3376 			ret = -EINVAL;
3377 			rcu_read_unlock();
3378 			goto out_unlock;
3379 		} else {
3380 			need_offchan = true;
3381 		}
3382 		rcu_read_unlock();
3383 	}
3384 
3385 	if (need_offchan && !params->offchan) {
3386 		ret = -EBUSY;
3387 		goto out_unlock;
3388 	}
3389 
3390 	skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3391 	if (!skb) {
3392 		ret = -ENOMEM;
3393 		goto out_unlock;
3394 	}
3395 	skb_reserve(skb, local->hw.extra_tx_headroom);
3396 
3397 	data = skb_put(skb, params->len);
3398 	memcpy(data, params->buf, params->len);
3399 
3400 	/* Update CSA counters */
3401 	if (sdata->vif.csa_active &&
3402 	    (sdata->vif.type == NL80211_IFTYPE_AP ||
3403 	     sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3404 	     sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3405 	    params->n_csa_offsets) {
3406 		int i;
3407 		struct beacon_data *beacon = NULL;
3408 
3409 		rcu_read_lock();
3410 
3411 		if (sdata->vif.type == NL80211_IFTYPE_AP)
3412 			beacon = rcu_dereference(sdata->u.ap.beacon);
3413 		else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3414 			beacon = rcu_dereference(sdata->u.ibss.presp);
3415 		else if (ieee80211_vif_is_mesh(&sdata->vif))
3416 			beacon = rcu_dereference(sdata->u.mesh.beacon);
3417 
3418 		if (beacon)
3419 			for (i = 0; i < params->n_csa_offsets; i++)
3420 				data[params->csa_offsets[i]] =
3421 					beacon->csa_current_counter;
3422 
3423 		rcu_read_unlock();
3424 	}
3425 
3426 	IEEE80211_SKB_CB(skb)->flags = flags;
3427 
3428 	skb->dev = sdata->dev;
3429 
3430 	if (!params->dont_wait_for_ack) {
3431 		/* make a copy to preserve the frame contents
3432 		 * in case of encryption.
3433 		 */
3434 		ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3435 						 GFP_KERNEL);
3436 		if (IS_ERR(ack_skb)) {
3437 			ret = PTR_ERR(ack_skb);
3438 			kfree_skb(skb);
3439 			goto out_unlock;
3440 		}
3441 	} else {
3442 		/* for cookie below */
3443 		ack_skb = skb;
3444 	}
3445 
3446 	if (!need_offchan) {
3447 		ieee80211_tx_skb(sdata, skb);
3448 		ret = 0;
3449 		goto out_unlock;
3450 	}
3451 
3452 	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3453 					IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3454 	if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3455 		IEEE80211_SKB_CB(skb)->hw_queue =
3456 			local->hw.offchannel_tx_hw_queue;
3457 
3458 	/* This will handle all kinds of coalescing and immediate TX */
3459 	ret = ieee80211_start_roc_work(local, sdata, params->chan,
3460 				       params->wait, cookie, skb,
3461 				       IEEE80211_ROC_TYPE_MGMT_TX);
3462 	if (ret)
3463 		kfree_skb(skb);
3464  out_unlock:
3465 	mutex_unlock(&local->mtx);
3466 	return ret;
3467 }
3468 
3469 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3470 					 struct wireless_dev *wdev,
3471 					 u64 cookie)
3472 {
3473 	struct ieee80211_local *local = wiphy_priv(wiphy);
3474 
3475 	return ieee80211_cancel_roc(local, cookie, true);
3476 }
3477 
3478 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3479 					  struct wireless_dev *wdev,
3480 					  u16 frame_type, bool reg)
3481 {
3482 	struct ieee80211_local *local = wiphy_priv(wiphy);
3483 
3484 	switch (frame_type) {
3485 	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3486 		if (reg)
3487 			local->probe_req_reg++;
3488 		else
3489 			local->probe_req_reg--;
3490 
3491 		if (!local->open_count)
3492 			break;
3493 
3494 		ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3495 		break;
3496 	default:
3497 		break;
3498 	}
3499 }
3500 
3501 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3502 {
3503 	struct ieee80211_local *local = wiphy_priv(wiphy);
3504 
3505 	if (local->started)
3506 		return -EOPNOTSUPP;
3507 
3508 	return drv_set_antenna(local, tx_ant, rx_ant);
3509 }
3510 
3511 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3512 {
3513 	struct ieee80211_local *local = wiphy_priv(wiphy);
3514 
3515 	return drv_get_antenna(local, tx_ant, rx_ant);
3516 }
3517 
3518 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3519 				    struct net_device *dev,
3520 				    struct cfg80211_gtk_rekey_data *data)
3521 {
3522 	struct ieee80211_local *local = wiphy_priv(wiphy);
3523 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3524 
3525 	if (!local->ops->set_rekey_data)
3526 		return -EOPNOTSUPP;
3527 
3528 	drv_set_rekey_data(local, sdata, data);
3529 
3530 	return 0;
3531 }
3532 
3533 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3534 				  const u8 *peer, u64 *cookie)
3535 {
3536 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3537 	struct ieee80211_local *local = sdata->local;
3538 	struct ieee80211_qos_hdr *nullfunc;
3539 	struct sk_buff *skb, *ack_skb;
3540 	int size = sizeof(*nullfunc);
3541 	__le16 fc;
3542 	bool qos;
3543 	struct ieee80211_tx_info *info;
3544 	struct sta_info *sta;
3545 	struct ieee80211_chanctx_conf *chanctx_conf;
3546 	enum ieee80211_band band;
3547 	int ret;
3548 
3549 	/* the lock is needed to assign the cookie later */
3550 	mutex_lock(&local->mtx);
3551 
3552 	rcu_read_lock();
3553 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3554 	if (WARN_ON(!chanctx_conf)) {
3555 		ret = -EINVAL;
3556 		goto unlock;
3557 	}
3558 	band = chanctx_conf->def.chan->band;
3559 	sta = sta_info_get_bss(sdata, peer);
3560 	if (sta) {
3561 		qos = sta->sta.wme;
3562 	} else {
3563 		ret = -ENOLINK;
3564 		goto unlock;
3565 	}
3566 
3567 	if (qos) {
3568 		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3569 				 IEEE80211_STYPE_QOS_NULLFUNC |
3570 				 IEEE80211_FCTL_FROMDS);
3571 	} else {
3572 		size -= 2;
3573 		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3574 				 IEEE80211_STYPE_NULLFUNC |
3575 				 IEEE80211_FCTL_FROMDS);
3576 	}
3577 
3578 	skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3579 	if (!skb) {
3580 		ret = -ENOMEM;
3581 		goto unlock;
3582 	}
3583 
3584 	skb->dev = dev;
3585 
3586 	skb_reserve(skb, local->hw.extra_tx_headroom);
3587 
3588 	nullfunc = (void *) skb_put(skb, size);
3589 	nullfunc->frame_control = fc;
3590 	nullfunc->duration_id = 0;
3591 	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3592 	memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3593 	memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3594 	nullfunc->seq_ctrl = 0;
3595 
3596 	info = IEEE80211_SKB_CB(skb);
3597 
3598 	info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3599 		       IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3600 	info->band = band;
3601 
3602 	skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3603 	skb->priority = 7;
3604 	if (qos)
3605 		nullfunc->qos_ctrl = cpu_to_le16(7);
3606 
3607 	ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3608 	if (IS_ERR(ack_skb)) {
3609 		kfree_skb(skb);
3610 		ret = PTR_ERR(ack_skb);
3611 		goto unlock;
3612 	}
3613 
3614 	local_bh_disable();
3615 	ieee80211_xmit(sdata, sta, skb);
3616 	local_bh_enable();
3617 
3618 	ret = 0;
3619 unlock:
3620 	rcu_read_unlock();
3621 	mutex_unlock(&local->mtx);
3622 
3623 	return ret;
3624 }
3625 
3626 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3627 				     struct wireless_dev *wdev,
3628 				     struct cfg80211_chan_def *chandef)
3629 {
3630 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3631 	struct ieee80211_local *local = wiphy_priv(wiphy);
3632 	struct ieee80211_chanctx_conf *chanctx_conf;
3633 	int ret = -ENODATA;
3634 
3635 	rcu_read_lock();
3636 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3637 	if (chanctx_conf) {
3638 		*chandef = sdata->vif.bss_conf.chandef;
3639 		ret = 0;
3640 	} else if (local->open_count > 0 &&
3641 		   local->open_count == local->monitors &&
3642 		   sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3643 		if (local->use_chanctx)
3644 			*chandef = local->monitor_chandef;
3645 		else
3646 			*chandef = local->_oper_chandef;
3647 		ret = 0;
3648 	}
3649 	rcu_read_unlock();
3650 
3651 	return ret;
3652 }
3653 
3654 #ifdef CONFIG_PM
3655 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3656 {
3657 	drv_set_wakeup(wiphy_priv(wiphy), enabled);
3658 }
3659 #endif
3660 
3661 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3662 				 struct net_device *dev,
3663 				 struct cfg80211_qos_map *qos_map)
3664 {
3665 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3666 	struct mac80211_qos_map *new_qos_map, *old_qos_map;
3667 
3668 	if (qos_map) {
3669 		new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3670 		if (!new_qos_map)
3671 			return -ENOMEM;
3672 		memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3673 	} else {
3674 		/* A NULL qos_map was passed to disable QoS mapping */
3675 		new_qos_map = NULL;
3676 	}
3677 
3678 	old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3679 	rcu_assign_pointer(sdata->qos_map, new_qos_map);
3680 	if (old_qos_map)
3681 		kfree_rcu(old_qos_map, rcu_head);
3682 
3683 	return 0;
3684 }
3685 
3686 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3687 				      struct net_device *dev,
3688 				      struct cfg80211_chan_def *chandef)
3689 {
3690 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3691 	int ret;
3692 	u32 changed = 0;
3693 
3694 	ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3695 	if (ret == 0)
3696 		ieee80211_bss_info_change_notify(sdata, changed);
3697 
3698 	return ret;
3699 }
3700 
3701 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3702 			       u8 tsid, const u8 *peer, u8 up,
3703 			       u16 admitted_time)
3704 {
3705 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3706 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3707 	int ac = ieee802_1d_to_ac[up];
3708 
3709 	if (sdata->vif.type != NL80211_IFTYPE_STATION)
3710 		return -EOPNOTSUPP;
3711 
3712 	if (!(sdata->wmm_acm & BIT(up)))
3713 		return -EINVAL;
3714 
3715 	if (ifmgd->tx_tspec[ac].admitted_time)
3716 		return -EBUSY;
3717 
3718 	if (admitted_time) {
3719 		ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3720 		ifmgd->tx_tspec[ac].tsid = tsid;
3721 		ifmgd->tx_tspec[ac].up = up;
3722 	}
3723 
3724 	return 0;
3725 }
3726 
3727 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3728 			       u8 tsid, const u8 *peer)
3729 {
3730 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3731 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3732 	struct ieee80211_local *local = wiphy_priv(wiphy);
3733 	int ac;
3734 
3735 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3736 		struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3737 
3738 		/* skip unused entries */
3739 		if (!tx_tspec->admitted_time)
3740 			continue;
3741 
3742 		if (tx_tspec->tsid != tsid)
3743 			continue;
3744 
3745 		/* due to this new packets will be reassigned to non-ACM ACs */
3746 		tx_tspec->up = -1;
3747 
3748 		/* Make sure that all packets have been sent to avoid to
3749 		 * restore the QoS params on packets that are still on the
3750 		 * queues.
3751 		 */
3752 		synchronize_net();
3753 		ieee80211_flush_queues(local, sdata, false);
3754 
3755 		/* restore the normal QoS parameters
3756 		 * (unconditionally to avoid races)
3757 		 */
3758 		tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3759 		tx_tspec->downgraded = false;
3760 		ieee80211_sta_handle_tspec_ac_params(sdata);
3761 
3762 		/* finally clear all the data */
3763 		memset(tx_tspec, 0, sizeof(*tx_tspec));
3764 
3765 		return 0;
3766 	}
3767 
3768 	return -ENOENT;
3769 }
3770 
3771 const struct cfg80211_ops mac80211_config_ops = {
3772 	.add_virtual_intf = ieee80211_add_iface,
3773 	.del_virtual_intf = ieee80211_del_iface,
3774 	.change_virtual_intf = ieee80211_change_iface,
3775 	.start_p2p_device = ieee80211_start_p2p_device,
3776 	.stop_p2p_device = ieee80211_stop_p2p_device,
3777 	.add_key = ieee80211_add_key,
3778 	.del_key = ieee80211_del_key,
3779 	.get_key = ieee80211_get_key,
3780 	.set_default_key = ieee80211_config_default_key,
3781 	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3782 	.start_ap = ieee80211_start_ap,
3783 	.change_beacon = ieee80211_change_beacon,
3784 	.stop_ap = ieee80211_stop_ap,
3785 	.add_station = ieee80211_add_station,
3786 	.del_station = ieee80211_del_station,
3787 	.change_station = ieee80211_change_station,
3788 	.get_station = ieee80211_get_station,
3789 	.dump_station = ieee80211_dump_station,
3790 	.dump_survey = ieee80211_dump_survey,
3791 #ifdef CONFIG_MAC80211_MESH
3792 	.add_mpath = ieee80211_add_mpath,
3793 	.del_mpath = ieee80211_del_mpath,
3794 	.change_mpath = ieee80211_change_mpath,
3795 	.get_mpath = ieee80211_get_mpath,
3796 	.dump_mpath = ieee80211_dump_mpath,
3797 	.get_mpp = ieee80211_get_mpp,
3798 	.dump_mpp = ieee80211_dump_mpp,
3799 	.update_mesh_config = ieee80211_update_mesh_config,
3800 	.get_mesh_config = ieee80211_get_mesh_config,
3801 	.join_mesh = ieee80211_join_mesh,
3802 	.leave_mesh = ieee80211_leave_mesh,
3803 #endif
3804 	.join_ocb = ieee80211_join_ocb,
3805 	.leave_ocb = ieee80211_leave_ocb,
3806 	.change_bss = ieee80211_change_bss,
3807 	.set_txq_params = ieee80211_set_txq_params,
3808 	.set_monitor_channel = ieee80211_set_monitor_channel,
3809 	.suspend = ieee80211_suspend,
3810 	.resume = ieee80211_resume,
3811 	.scan = ieee80211_scan,
3812 	.sched_scan_start = ieee80211_sched_scan_start,
3813 	.sched_scan_stop = ieee80211_sched_scan_stop,
3814 	.auth = ieee80211_auth,
3815 	.assoc = ieee80211_assoc,
3816 	.deauth = ieee80211_deauth,
3817 	.disassoc = ieee80211_disassoc,
3818 	.join_ibss = ieee80211_join_ibss,
3819 	.leave_ibss = ieee80211_leave_ibss,
3820 	.set_mcast_rate = ieee80211_set_mcast_rate,
3821 	.set_wiphy_params = ieee80211_set_wiphy_params,
3822 	.set_tx_power = ieee80211_set_tx_power,
3823 	.get_tx_power = ieee80211_get_tx_power,
3824 	.set_wds_peer = ieee80211_set_wds_peer,
3825 	.rfkill_poll = ieee80211_rfkill_poll,
3826 	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3827 	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3828 	.set_power_mgmt = ieee80211_set_power_mgmt,
3829 	.set_bitrate_mask = ieee80211_set_bitrate_mask,
3830 	.remain_on_channel = ieee80211_remain_on_channel,
3831 	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3832 	.mgmt_tx = ieee80211_mgmt_tx,
3833 	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3834 	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3835 	.mgmt_frame_register = ieee80211_mgmt_frame_register,
3836 	.set_antenna = ieee80211_set_antenna,
3837 	.get_antenna = ieee80211_get_antenna,
3838 	.set_rekey_data = ieee80211_set_rekey_data,
3839 	.tdls_oper = ieee80211_tdls_oper,
3840 	.tdls_mgmt = ieee80211_tdls_mgmt,
3841 	.tdls_channel_switch = ieee80211_tdls_channel_switch,
3842 	.tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3843 	.probe_client = ieee80211_probe_client,
3844 	.set_noack_map = ieee80211_set_noack_map,
3845 #ifdef CONFIG_PM
3846 	.set_wakeup = ieee80211_set_wakeup,
3847 #endif
3848 	.get_channel = ieee80211_cfg_get_channel,
3849 	.start_radar_detection = ieee80211_start_radar_detection,
3850 	.channel_switch = ieee80211_channel_switch,
3851 	.set_qos_map = ieee80211_set_qos_map,
3852 	.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3853 	.add_tx_ts = ieee80211_add_tx_ts,
3854 	.del_tx_ts = ieee80211_del_tx_ts,
3855 };
3856