xref: /openbmc/linux/net/mac80211/cfg.c (revision abfbd895)
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 "rate.h"
21 #include "mesh.h"
22 #include "wme.h"
23 
24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
25 						const char *name,
26 						unsigned char name_assign_type,
27 						enum nl80211_iftype type,
28 						u32 *flags,
29 						struct vif_params *params)
30 {
31 	struct ieee80211_local *local = wiphy_priv(wiphy);
32 	struct wireless_dev *wdev;
33 	struct ieee80211_sub_if_data *sdata;
34 	int err;
35 
36 	err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
37 	if (err)
38 		return ERR_PTR(err);
39 
40 	if (type == NL80211_IFTYPE_MONITOR && flags) {
41 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
42 		sdata->u.mntr_flags = *flags;
43 	}
44 
45 	return wdev;
46 }
47 
48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
49 {
50 	ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
51 
52 	return 0;
53 }
54 
55 static int ieee80211_change_iface(struct wiphy *wiphy,
56 				  struct net_device *dev,
57 				  enum nl80211_iftype type, u32 *flags,
58 				  struct vif_params *params)
59 {
60 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
61 	int ret;
62 
63 	ret = ieee80211_if_change_type(sdata, type);
64 	if (ret)
65 		return ret;
66 
67 	if (type == NL80211_IFTYPE_AP_VLAN &&
68 	    params && params->use_4addr == 0)
69 		RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
70 	else if (type == NL80211_IFTYPE_STATION &&
71 		 params && params->use_4addr >= 0)
72 		sdata->u.mgd.use_4addr = params->use_4addr;
73 
74 	if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
75 		struct ieee80211_local *local = sdata->local;
76 
77 		if (ieee80211_sdata_running(sdata)) {
78 			u32 mask = MONITOR_FLAG_COOK_FRAMES |
79 				   MONITOR_FLAG_ACTIVE;
80 
81 			/*
82 			 * Prohibit MONITOR_FLAG_COOK_FRAMES and
83 			 * MONITOR_FLAG_ACTIVE to be changed while the
84 			 * interface is up.
85 			 * Else we would need to add a lot of cruft
86 			 * to update everything:
87 			 *	cooked_mntrs, monitor and all fif_* counters
88 			 *	reconfigure hardware
89 			 */
90 			if ((*flags & mask) != (sdata->u.mntr_flags & mask))
91 				return -EBUSY;
92 
93 			ieee80211_adjust_monitor_flags(sdata, -1);
94 			sdata->u.mntr_flags = *flags;
95 			ieee80211_adjust_monitor_flags(sdata, 1);
96 
97 			ieee80211_configure_filter(local);
98 		} else {
99 			/*
100 			 * Because the interface is down, ieee80211_do_stop
101 			 * and ieee80211_do_open take care of "everything"
102 			 * mentioned in the comment above.
103 			 */
104 			sdata->u.mntr_flags = *flags;
105 		}
106 	}
107 
108 	return 0;
109 }
110 
111 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
112 				      struct wireless_dev *wdev)
113 {
114 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
115 	int ret;
116 
117 	mutex_lock(&sdata->local->chanctx_mtx);
118 	ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
119 	mutex_unlock(&sdata->local->chanctx_mtx);
120 	if (ret < 0)
121 		return ret;
122 
123 	return ieee80211_do_open(wdev, true);
124 }
125 
126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
127 				      struct wireless_dev *wdev)
128 {
129 	ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
130 }
131 
132 static int ieee80211_set_noack_map(struct wiphy *wiphy,
133 				  struct net_device *dev,
134 				  u16 noack_map)
135 {
136 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
137 
138 	sdata->noack_map = noack_map;
139 
140 	ieee80211_check_fast_xmit_iface(sdata);
141 
142 	return 0;
143 }
144 
145 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
146 			     u8 key_idx, bool pairwise, const u8 *mac_addr,
147 			     struct key_params *params)
148 {
149 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
150 	struct ieee80211_local *local = sdata->local;
151 	struct sta_info *sta = NULL;
152 	const struct ieee80211_cipher_scheme *cs = NULL;
153 	struct ieee80211_key *key;
154 	int err;
155 
156 	if (!ieee80211_sdata_running(sdata))
157 		return -ENETDOWN;
158 
159 	/* reject WEP and TKIP keys if WEP failed to initialize */
160 	switch (params->cipher) {
161 	case WLAN_CIPHER_SUITE_WEP40:
162 	case WLAN_CIPHER_SUITE_TKIP:
163 	case WLAN_CIPHER_SUITE_WEP104:
164 		if (IS_ERR(local->wep_tx_tfm))
165 			return -EINVAL;
166 		break;
167 	case WLAN_CIPHER_SUITE_CCMP:
168 	case WLAN_CIPHER_SUITE_CCMP_256:
169 	case WLAN_CIPHER_SUITE_AES_CMAC:
170 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
171 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
172 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
173 	case WLAN_CIPHER_SUITE_GCMP:
174 	case WLAN_CIPHER_SUITE_GCMP_256:
175 		break;
176 	default:
177 		cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
178 		break;
179 	}
180 
181 	key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
182 				  params->key, params->seq_len, params->seq,
183 				  cs);
184 	if (IS_ERR(key))
185 		return PTR_ERR(key);
186 
187 	if (pairwise)
188 		key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
189 
190 	mutex_lock(&local->sta_mtx);
191 
192 	if (mac_addr) {
193 		if (ieee80211_vif_is_mesh(&sdata->vif))
194 			sta = sta_info_get(sdata, mac_addr);
195 		else
196 			sta = sta_info_get_bss(sdata, mac_addr);
197 		/*
198 		 * The ASSOC test makes sure the driver is ready to
199 		 * receive the key. When wpa_supplicant has roamed
200 		 * using FT, it attempts to set the key before
201 		 * association has completed, this rejects that attempt
202 		 * so it will set the key again after association.
203 		 *
204 		 * TODO: accept the key if we have a station entry and
205 		 *       add it to the device after the station.
206 		 */
207 		if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
208 			ieee80211_key_free_unused(key);
209 			err = -ENOENT;
210 			goto out_unlock;
211 		}
212 	}
213 
214 	switch (sdata->vif.type) {
215 	case NL80211_IFTYPE_STATION:
216 		if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
217 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
218 		break;
219 	case NL80211_IFTYPE_AP:
220 	case NL80211_IFTYPE_AP_VLAN:
221 		/* Keys without a station are used for TX only */
222 		if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
223 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
224 		break;
225 	case NL80211_IFTYPE_ADHOC:
226 		/* no MFP (yet) */
227 		break;
228 	case NL80211_IFTYPE_MESH_POINT:
229 #ifdef CONFIG_MAC80211_MESH
230 		if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
231 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
232 		break;
233 #endif
234 	case NL80211_IFTYPE_WDS:
235 	case NL80211_IFTYPE_MONITOR:
236 	case NL80211_IFTYPE_P2P_DEVICE:
237 	case NL80211_IFTYPE_UNSPECIFIED:
238 	case NUM_NL80211_IFTYPES:
239 	case NL80211_IFTYPE_P2P_CLIENT:
240 	case NL80211_IFTYPE_P2P_GO:
241 	case NL80211_IFTYPE_OCB:
242 		/* shouldn't happen */
243 		WARN_ON_ONCE(1);
244 		break;
245 	}
246 
247 	if (sta)
248 		sta->cipher_scheme = cs;
249 
250 	err = ieee80211_key_link(key, sdata, sta);
251 
252  out_unlock:
253 	mutex_unlock(&local->sta_mtx);
254 
255 	return err;
256 }
257 
258 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
259 			     u8 key_idx, bool pairwise, const u8 *mac_addr)
260 {
261 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
262 	struct ieee80211_local *local = sdata->local;
263 	struct sta_info *sta;
264 	struct ieee80211_key *key = NULL;
265 	int ret;
266 
267 	mutex_lock(&local->sta_mtx);
268 	mutex_lock(&local->key_mtx);
269 
270 	if (mac_addr) {
271 		ret = -ENOENT;
272 
273 		sta = sta_info_get_bss(sdata, mac_addr);
274 		if (!sta)
275 			goto out_unlock;
276 
277 		if (pairwise)
278 			key = key_mtx_dereference(local, sta->ptk[key_idx]);
279 		else
280 			key = key_mtx_dereference(local, sta->gtk[key_idx]);
281 	} else
282 		key = key_mtx_dereference(local, sdata->keys[key_idx]);
283 
284 	if (!key) {
285 		ret = -ENOENT;
286 		goto out_unlock;
287 	}
288 
289 	ieee80211_key_free(key, true);
290 
291 	ret = 0;
292  out_unlock:
293 	mutex_unlock(&local->key_mtx);
294 	mutex_unlock(&local->sta_mtx);
295 
296 	return ret;
297 }
298 
299 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
300 			     u8 key_idx, bool pairwise, const u8 *mac_addr,
301 			     void *cookie,
302 			     void (*callback)(void *cookie,
303 					      struct key_params *params))
304 {
305 	struct ieee80211_sub_if_data *sdata;
306 	struct sta_info *sta = NULL;
307 	u8 seq[6] = {0};
308 	struct key_params params;
309 	struct ieee80211_key *key = NULL;
310 	u64 pn64;
311 	u32 iv32;
312 	u16 iv16;
313 	int err = -ENOENT;
314 	struct ieee80211_key_seq kseq = {};
315 
316 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
317 
318 	rcu_read_lock();
319 
320 	if (mac_addr) {
321 		sta = sta_info_get_bss(sdata, mac_addr);
322 		if (!sta)
323 			goto out;
324 
325 		if (pairwise && key_idx < NUM_DEFAULT_KEYS)
326 			key = rcu_dereference(sta->ptk[key_idx]);
327 		else if (!pairwise &&
328 			 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
329 			key = rcu_dereference(sta->gtk[key_idx]);
330 	} else
331 		key = rcu_dereference(sdata->keys[key_idx]);
332 
333 	if (!key)
334 		goto out;
335 
336 	memset(&params, 0, sizeof(params));
337 
338 	params.cipher = key->conf.cipher;
339 
340 	switch (key->conf.cipher) {
341 	case WLAN_CIPHER_SUITE_TKIP:
342 		iv32 = key->u.tkip.tx.iv32;
343 		iv16 = key->u.tkip.tx.iv16;
344 
345 		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
346 		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
347 			drv_get_key_seq(sdata->local, key, &kseq);
348 			iv32 = kseq.tkip.iv32;
349 			iv16 = kseq.tkip.iv16;
350 		}
351 
352 		seq[0] = iv16 & 0xff;
353 		seq[1] = (iv16 >> 8) & 0xff;
354 		seq[2] = iv32 & 0xff;
355 		seq[3] = (iv32 >> 8) & 0xff;
356 		seq[4] = (iv32 >> 16) & 0xff;
357 		seq[5] = (iv32 >> 24) & 0xff;
358 		params.seq = seq;
359 		params.seq_len = 6;
360 		break;
361 	case WLAN_CIPHER_SUITE_CCMP:
362 	case WLAN_CIPHER_SUITE_CCMP_256:
363 	case WLAN_CIPHER_SUITE_AES_CMAC:
364 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
365 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
366 			     offsetof(typeof(kseq), aes_cmac));
367 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
368 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
369 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
370 			     offsetof(typeof(kseq), aes_gmac));
371 	case WLAN_CIPHER_SUITE_GCMP:
372 	case WLAN_CIPHER_SUITE_GCMP_256:
373 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
374 			     offsetof(typeof(kseq), gcmp));
375 
376 		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
377 		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
378 			drv_get_key_seq(sdata->local, key, &kseq);
379 			memcpy(seq, kseq.ccmp.pn, 6);
380 		} else {
381 			pn64 = atomic64_read(&key->conf.tx_pn);
382 			seq[0] = pn64;
383 			seq[1] = pn64 >> 8;
384 			seq[2] = pn64 >> 16;
385 			seq[3] = pn64 >> 24;
386 			seq[4] = pn64 >> 32;
387 			seq[5] = pn64 >> 40;
388 		}
389 		params.seq = seq;
390 		params.seq_len = 6;
391 		break;
392 	default:
393 		if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
394 			break;
395 		if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
396 			break;
397 		drv_get_key_seq(sdata->local, key, &kseq);
398 		params.seq = kseq.hw.seq;
399 		params.seq_len = kseq.hw.seq_len;
400 		break;
401 	}
402 
403 	params.key = key->conf.key;
404 	params.key_len = key->conf.keylen;
405 
406 	callback(cookie, &params);
407 	err = 0;
408 
409  out:
410 	rcu_read_unlock();
411 	return err;
412 }
413 
414 static int ieee80211_config_default_key(struct wiphy *wiphy,
415 					struct net_device *dev,
416 					u8 key_idx, bool uni,
417 					bool multi)
418 {
419 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
420 
421 	ieee80211_set_default_key(sdata, key_idx, uni, multi);
422 
423 	return 0;
424 }
425 
426 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
427 					     struct net_device *dev,
428 					     u8 key_idx)
429 {
430 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
431 
432 	ieee80211_set_default_mgmt_key(sdata, key_idx);
433 
434 	return 0;
435 }
436 
437 void sta_set_rate_info_tx(struct sta_info *sta,
438 			  const struct ieee80211_tx_rate *rate,
439 			  struct rate_info *rinfo)
440 {
441 	rinfo->flags = 0;
442 	if (rate->flags & IEEE80211_TX_RC_MCS) {
443 		rinfo->flags |= RATE_INFO_FLAGS_MCS;
444 		rinfo->mcs = rate->idx;
445 	} else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
446 		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
447 		rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
448 		rinfo->nss = ieee80211_rate_get_vht_nss(rate);
449 	} else {
450 		struct ieee80211_supported_band *sband;
451 		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
452 		u16 brate;
453 
454 		sband = sta->local->hw.wiphy->bands[
455 				ieee80211_get_sdata_band(sta->sdata)];
456 		brate = sband->bitrates[rate->idx].bitrate;
457 		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
458 	}
459 	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
460 		rinfo->bw = RATE_INFO_BW_40;
461 	else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
462 		rinfo->bw = RATE_INFO_BW_80;
463 	else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
464 		rinfo->bw = RATE_INFO_BW_160;
465 	else
466 		rinfo->bw = RATE_INFO_BW_20;
467 	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
468 		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
469 }
470 
471 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
472 				  int idx, u8 *mac, struct station_info *sinfo)
473 {
474 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
475 	struct ieee80211_local *local = sdata->local;
476 	struct sta_info *sta;
477 	int ret = -ENOENT;
478 
479 	mutex_lock(&local->sta_mtx);
480 
481 	sta = sta_info_get_by_idx(sdata, idx);
482 	if (sta) {
483 		ret = 0;
484 		memcpy(mac, sta->sta.addr, ETH_ALEN);
485 		sta_set_sinfo(sta, sinfo);
486 	}
487 
488 	mutex_unlock(&local->sta_mtx);
489 
490 	return ret;
491 }
492 
493 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
494 				 int idx, struct survey_info *survey)
495 {
496 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
497 
498 	return drv_get_survey(local, idx, survey);
499 }
500 
501 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
502 				 const u8 *mac, struct station_info *sinfo)
503 {
504 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
505 	struct ieee80211_local *local = sdata->local;
506 	struct sta_info *sta;
507 	int ret = -ENOENT;
508 
509 	mutex_lock(&local->sta_mtx);
510 
511 	sta = sta_info_get_bss(sdata, mac);
512 	if (sta) {
513 		ret = 0;
514 		sta_set_sinfo(sta, sinfo);
515 	}
516 
517 	mutex_unlock(&local->sta_mtx);
518 
519 	return ret;
520 }
521 
522 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
523 					 struct cfg80211_chan_def *chandef)
524 {
525 	struct ieee80211_local *local = wiphy_priv(wiphy);
526 	struct ieee80211_sub_if_data *sdata;
527 	int ret = 0;
528 
529 	if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
530 		return 0;
531 
532 	mutex_lock(&local->mtx);
533 	mutex_lock(&local->iflist_mtx);
534 	if (local->use_chanctx) {
535 		sdata = rcu_dereference_protected(
536 				local->monitor_sdata,
537 				lockdep_is_held(&local->iflist_mtx));
538 		if (sdata) {
539 			ieee80211_vif_release_channel(sdata);
540 			ret = ieee80211_vif_use_channel(sdata, chandef,
541 					IEEE80211_CHANCTX_EXCLUSIVE);
542 		}
543 	} else if (local->open_count == local->monitors) {
544 		local->_oper_chandef = *chandef;
545 		ieee80211_hw_config(local, 0);
546 	}
547 
548 	if (ret == 0)
549 		local->monitor_chandef = *chandef;
550 	mutex_unlock(&local->iflist_mtx);
551 	mutex_unlock(&local->mtx);
552 
553 	return ret;
554 }
555 
556 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
557 				    const u8 *resp, size_t resp_len,
558 				    const struct ieee80211_csa_settings *csa)
559 {
560 	struct probe_resp *new, *old;
561 
562 	if (!resp || !resp_len)
563 		return 1;
564 
565 	old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
566 
567 	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
568 	if (!new)
569 		return -ENOMEM;
570 
571 	new->len = resp_len;
572 	memcpy(new->data, resp, resp_len);
573 
574 	if (csa)
575 		memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
576 		       csa->n_counter_offsets_presp *
577 		       sizeof(new->csa_counter_offsets[0]));
578 
579 	rcu_assign_pointer(sdata->u.ap.probe_resp, new);
580 	if (old)
581 		kfree_rcu(old, rcu_head);
582 
583 	return 0;
584 }
585 
586 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
587 				   struct cfg80211_beacon_data *params,
588 				   const struct ieee80211_csa_settings *csa)
589 {
590 	struct beacon_data *new, *old;
591 	int new_head_len, new_tail_len;
592 	int size, err;
593 	u32 changed = BSS_CHANGED_BEACON;
594 
595 	old = sdata_dereference(sdata->u.ap.beacon, sdata);
596 
597 
598 	/* Need to have a beacon head if we don't have one yet */
599 	if (!params->head && !old)
600 		return -EINVAL;
601 
602 	/* new or old head? */
603 	if (params->head)
604 		new_head_len = params->head_len;
605 	else
606 		new_head_len = old->head_len;
607 
608 	/* new or old tail? */
609 	if (params->tail || !old)
610 		/* params->tail_len will be zero for !params->tail */
611 		new_tail_len = params->tail_len;
612 	else
613 		new_tail_len = old->tail_len;
614 
615 	size = sizeof(*new) + new_head_len + new_tail_len;
616 
617 	new = kzalloc(size, GFP_KERNEL);
618 	if (!new)
619 		return -ENOMEM;
620 
621 	/* start filling the new info now */
622 
623 	/*
624 	 * pointers go into the block we allocated,
625 	 * memory is | beacon_data | head | tail |
626 	 */
627 	new->head = ((u8 *) new) + sizeof(*new);
628 	new->tail = new->head + new_head_len;
629 	new->head_len = new_head_len;
630 	new->tail_len = new_tail_len;
631 
632 	if (csa) {
633 		new->csa_current_counter = csa->count;
634 		memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
635 		       csa->n_counter_offsets_beacon *
636 		       sizeof(new->csa_counter_offsets[0]));
637 	}
638 
639 	/* copy in head */
640 	if (params->head)
641 		memcpy(new->head, params->head, new_head_len);
642 	else
643 		memcpy(new->head, old->head, new_head_len);
644 
645 	/* copy in optional tail */
646 	if (params->tail)
647 		memcpy(new->tail, params->tail, new_tail_len);
648 	else
649 		if (old)
650 			memcpy(new->tail, old->tail, new_tail_len);
651 
652 	err = ieee80211_set_probe_resp(sdata, params->probe_resp,
653 				       params->probe_resp_len, csa);
654 	if (err < 0)
655 		return err;
656 	if (err == 0)
657 		changed |= BSS_CHANGED_AP_PROBE_RESP;
658 
659 	rcu_assign_pointer(sdata->u.ap.beacon, new);
660 
661 	if (old)
662 		kfree_rcu(old, rcu_head);
663 
664 	return changed;
665 }
666 
667 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
668 			      struct cfg80211_ap_settings *params)
669 {
670 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
671 	struct ieee80211_local *local = sdata->local;
672 	struct beacon_data *old;
673 	struct ieee80211_sub_if_data *vlan;
674 	u32 changed = BSS_CHANGED_BEACON_INT |
675 		      BSS_CHANGED_BEACON_ENABLED |
676 		      BSS_CHANGED_BEACON |
677 		      BSS_CHANGED_SSID |
678 		      BSS_CHANGED_P2P_PS |
679 		      BSS_CHANGED_TXPOWER;
680 	int err;
681 
682 	old = sdata_dereference(sdata->u.ap.beacon, sdata);
683 	if (old)
684 		return -EALREADY;
685 
686 	switch (params->smps_mode) {
687 	case NL80211_SMPS_OFF:
688 		sdata->smps_mode = IEEE80211_SMPS_OFF;
689 		break;
690 	case NL80211_SMPS_STATIC:
691 		sdata->smps_mode = IEEE80211_SMPS_STATIC;
692 		break;
693 	case NL80211_SMPS_DYNAMIC:
694 		sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
695 		break;
696 	default:
697 		return -EINVAL;
698 	}
699 	sdata->needed_rx_chains = sdata->local->rx_chains;
700 
701 	mutex_lock(&local->mtx);
702 	err = ieee80211_vif_use_channel(sdata, &params->chandef,
703 					IEEE80211_CHANCTX_SHARED);
704 	if (!err)
705 		ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
706 	mutex_unlock(&local->mtx);
707 	if (err)
708 		return err;
709 
710 	/*
711 	 * Apply control port protocol, this allows us to
712 	 * not encrypt dynamic WEP control frames.
713 	 */
714 	sdata->control_port_protocol = params->crypto.control_port_ethertype;
715 	sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
716 	sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
717 							&params->crypto,
718 							sdata->vif.type);
719 
720 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
721 		vlan->control_port_protocol =
722 			params->crypto.control_port_ethertype;
723 		vlan->control_port_no_encrypt =
724 			params->crypto.control_port_no_encrypt;
725 		vlan->encrypt_headroom =
726 			ieee80211_cs_headroom(sdata->local,
727 					      &params->crypto,
728 					      vlan->vif.type);
729 	}
730 
731 	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
732 	sdata->vif.bss_conf.dtim_period = params->dtim_period;
733 	sdata->vif.bss_conf.enable_beacon = true;
734 
735 	sdata->vif.bss_conf.ssid_len = params->ssid_len;
736 	if (params->ssid_len)
737 		memcpy(sdata->vif.bss_conf.ssid, params->ssid,
738 		       params->ssid_len);
739 	sdata->vif.bss_conf.hidden_ssid =
740 		(params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
741 
742 	memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
743 	       sizeof(sdata->vif.bss_conf.p2p_noa_attr));
744 	sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
745 		params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
746 	if (params->p2p_opp_ps)
747 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
748 					IEEE80211_P2P_OPPPS_ENABLE_BIT;
749 
750 	err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
751 	if (err < 0) {
752 		ieee80211_vif_release_channel(sdata);
753 		return err;
754 	}
755 	changed |= err;
756 
757 	err = drv_start_ap(sdata->local, sdata);
758 	if (err) {
759 		old = sdata_dereference(sdata->u.ap.beacon, sdata);
760 
761 		if (old)
762 			kfree_rcu(old, rcu_head);
763 		RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
764 		ieee80211_vif_release_channel(sdata);
765 		return err;
766 	}
767 
768 	ieee80211_recalc_dtim(local, sdata);
769 	ieee80211_bss_info_change_notify(sdata, changed);
770 
771 	netif_carrier_on(dev);
772 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
773 		netif_carrier_on(vlan->dev);
774 
775 	return 0;
776 }
777 
778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
779 				   struct cfg80211_beacon_data *params)
780 {
781 	struct ieee80211_sub_if_data *sdata;
782 	struct beacon_data *old;
783 	int err;
784 
785 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
786 	sdata_assert_lock(sdata);
787 
788 	/* don't allow changing the beacon while CSA is in place - offset
789 	 * of channel switch counter may change
790 	 */
791 	if (sdata->vif.csa_active)
792 		return -EBUSY;
793 
794 	old = sdata_dereference(sdata->u.ap.beacon, sdata);
795 	if (!old)
796 		return -ENOENT;
797 
798 	err = ieee80211_assign_beacon(sdata, params, NULL);
799 	if (err < 0)
800 		return err;
801 	ieee80211_bss_info_change_notify(sdata, err);
802 	return 0;
803 }
804 
805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
806 {
807 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
808 	struct ieee80211_sub_if_data *vlan;
809 	struct ieee80211_local *local = sdata->local;
810 	struct beacon_data *old_beacon;
811 	struct probe_resp *old_probe_resp;
812 	struct cfg80211_chan_def chandef;
813 
814 	sdata_assert_lock(sdata);
815 
816 	old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
817 	if (!old_beacon)
818 		return -ENOENT;
819 	old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
820 
821 	/* abort any running channel switch */
822 	mutex_lock(&local->mtx);
823 	sdata->vif.csa_active = false;
824 	if (sdata->csa_block_tx) {
825 		ieee80211_wake_vif_queues(local, sdata,
826 					  IEEE80211_QUEUE_STOP_REASON_CSA);
827 		sdata->csa_block_tx = false;
828 	}
829 
830 	mutex_unlock(&local->mtx);
831 
832 	kfree(sdata->u.ap.next_beacon);
833 	sdata->u.ap.next_beacon = NULL;
834 
835 	/* turn off carrier for this interface and dependent VLANs */
836 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
837 		netif_carrier_off(vlan->dev);
838 	netif_carrier_off(dev);
839 
840 	/* remove beacon and probe response */
841 	RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
842 	RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
843 	kfree_rcu(old_beacon, rcu_head);
844 	if (old_probe_resp)
845 		kfree_rcu(old_probe_resp, rcu_head);
846 	sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
847 
848 	__sta_info_flush(sdata, true);
849 	ieee80211_free_keys(sdata, true);
850 
851 	sdata->vif.bss_conf.enable_beacon = false;
852 	sdata->vif.bss_conf.ssid_len = 0;
853 	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
854 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
855 
856 	if (sdata->wdev.cac_started) {
857 		chandef = sdata->vif.bss_conf.chandef;
858 		cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
859 		cfg80211_cac_event(sdata->dev, &chandef,
860 				   NL80211_RADAR_CAC_ABORTED,
861 				   GFP_KERNEL);
862 	}
863 
864 	drv_stop_ap(sdata->local, sdata);
865 
866 	/* free all potentially still buffered bcast frames */
867 	local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
868 	skb_queue_purge(&sdata->u.ap.ps.bc_buf);
869 
870 	mutex_lock(&local->mtx);
871 	ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
872 	ieee80211_vif_release_channel(sdata);
873 	mutex_unlock(&local->mtx);
874 
875 	return 0;
876 }
877 
878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
879 struct iapp_layer2_update {
880 	u8 da[ETH_ALEN];	/* broadcast */
881 	u8 sa[ETH_ALEN];	/* STA addr */
882 	__be16 len;		/* 6 */
883 	u8 dsap;		/* 0 */
884 	u8 ssap;		/* 0 */
885 	u8 control;
886 	u8 xid_info[3];
887 } __packed;
888 
889 static void ieee80211_send_layer2_update(struct sta_info *sta)
890 {
891 	struct iapp_layer2_update *msg;
892 	struct sk_buff *skb;
893 
894 	/* Send Level 2 Update Frame to update forwarding tables in layer 2
895 	 * bridge devices */
896 
897 	skb = dev_alloc_skb(sizeof(*msg));
898 	if (!skb)
899 		return;
900 	msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
901 
902 	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
903 	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
904 
905 	eth_broadcast_addr(msg->da);
906 	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
907 	msg->len = htons(6);
908 	msg->dsap = 0;
909 	msg->ssap = 0x01;	/* NULL LSAP, CR Bit: Response */
910 	msg->control = 0xaf;	/* XID response lsb.1111F101.
911 				 * F=0 (no poll command; unsolicited frame) */
912 	msg->xid_info[0] = 0x81;	/* XID format identifier */
913 	msg->xid_info[1] = 1;	/* LLC types/classes: Type 1 LLC */
914 	msg->xid_info[2] = 0;	/* XID sender's receive window size (RW) */
915 
916 	skb->dev = sta->sdata->dev;
917 	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
918 	memset(skb->cb, 0, sizeof(skb->cb));
919 	netif_rx_ni(skb);
920 }
921 
922 static int sta_apply_auth_flags(struct ieee80211_local *local,
923 				struct sta_info *sta,
924 				u32 mask, u32 set)
925 {
926 	int ret;
927 
928 	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
929 	    set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
930 	    !test_sta_flag(sta, WLAN_STA_AUTH)) {
931 		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
932 		if (ret)
933 			return ret;
934 	}
935 
936 	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
937 	    set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
938 	    !test_sta_flag(sta, WLAN_STA_ASSOC)) {
939 		/*
940 		 * When peer becomes associated, init rate control as
941 		 * well. Some drivers require rate control initialized
942 		 * before drv_sta_state() is called.
943 		 */
944 		if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
945 			rate_control_rate_init(sta);
946 
947 		ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
948 		if (ret)
949 			return ret;
950 	}
951 
952 	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
953 		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
954 			ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
955 		else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
956 			ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
957 		else
958 			ret = 0;
959 		if (ret)
960 			return ret;
961 	}
962 
963 	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
964 	    !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
965 	    test_sta_flag(sta, WLAN_STA_ASSOC)) {
966 		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
967 		if (ret)
968 			return ret;
969 	}
970 
971 	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
972 	    !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
973 	    test_sta_flag(sta, WLAN_STA_AUTH)) {
974 		ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
975 		if (ret)
976 			return ret;
977 	}
978 
979 	return 0;
980 }
981 
982 static void sta_apply_mesh_params(struct ieee80211_local *local,
983 				  struct sta_info *sta,
984 				  struct station_parameters *params)
985 {
986 #ifdef CONFIG_MAC80211_MESH
987 	struct ieee80211_sub_if_data *sdata = sta->sdata;
988 	u32 changed = 0;
989 
990 	if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
991 		switch (params->plink_state) {
992 		case NL80211_PLINK_ESTAB:
993 			if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
994 				changed = mesh_plink_inc_estab_count(sdata);
995 			sta->mesh->plink_state = params->plink_state;
996 
997 			ieee80211_mps_sta_status_update(sta);
998 			changed |= ieee80211_mps_set_sta_local_pm(sta,
999 				      sdata->u.mesh.mshcfg.power_mode);
1000 			break;
1001 		case NL80211_PLINK_LISTEN:
1002 		case NL80211_PLINK_BLOCKED:
1003 		case NL80211_PLINK_OPN_SNT:
1004 		case NL80211_PLINK_OPN_RCVD:
1005 		case NL80211_PLINK_CNF_RCVD:
1006 		case NL80211_PLINK_HOLDING:
1007 			if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1008 				changed = mesh_plink_dec_estab_count(sdata);
1009 			sta->mesh->plink_state = params->plink_state;
1010 
1011 			ieee80211_mps_sta_status_update(sta);
1012 			changed |= ieee80211_mps_set_sta_local_pm(sta,
1013 					NL80211_MESH_POWER_UNKNOWN);
1014 			break;
1015 		default:
1016 			/*  nothing  */
1017 			break;
1018 		}
1019 	}
1020 
1021 	switch (params->plink_action) {
1022 	case NL80211_PLINK_ACTION_NO_ACTION:
1023 		/* nothing */
1024 		break;
1025 	case NL80211_PLINK_ACTION_OPEN:
1026 		changed |= mesh_plink_open(sta);
1027 		break;
1028 	case NL80211_PLINK_ACTION_BLOCK:
1029 		changed |= mesh_plink_block(sta);
1030 		break;
1031 	}
1032 
1033 	if (params->local_pm)
1034 		changed |= ieee80211_mps_set_sta_local_pm(sta,
1035 							  params->local_pm);
1036 
1037 	ieee80211_mbss_info_change_notify(sdata, changed);
1038 #endif
1039 }
1040 
1041 static int sta_apply_parameters(struct ieee80211_local *local,
1042 				struct sta_info *sta,
1043 				struct station_parameters *params)
1044 {
1045 	int ret = 0;
1046 	struct ieee80211_supported_band *sband;
1047 	struct ieee80211_sub_if_data *sdata = sta->sdata;
1048 	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1049 	u32 mask, set;
1050 
1051 	sband = local->hw.wiphy->bands[band];
1052 
1053 	mask = params->sta_flags_mask;
1054 	set = params->sta_flags_set;
1055 
1056 	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1057 		/*
1058 		 * In mesh mode, ASSOCIATED isn't part of the nl80211
1059 		 * API but must follow AUTHENTICATED for driver state.
1060 		 */
1061 		if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1062 			mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1063 		if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1064 			set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1065 	} else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1066 		/*
1067 		 * TDLS -- everything follows authorized, but
1068 		 * only becoming authorized is possible, not
1069 		 * going back
1070 		 */
1071 		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1072 			set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1073 			       BIT(NL80211_STA_FLAG_ASSOCIATED);
1074 			mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1075 				BIT(NL80211_STA_FLAG_ASSOCIATED);
1076 		}
1077 	}
1078 
1079 	if (mask & BIT(NL80211_STA_FLAG_WME) &&
1080 	    local->hw.queues >= IEEE80211_NUM_ACS)
1081 		sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1082 
1083 	/* auth flags will be set later for TDLS,
1084 	 * and for unassociated stations that move to assocaited */
1085 	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1086 	    !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1087 	      (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1088 		ret = sta_apply_auth_flags(local, sta, mask, set);
1089 		if (ret)
1090 			return ret;
1091 	}
1092 
1093 	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1094 		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1095 			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1096 		else
1097 			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1098 	}
1099 
1100 	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1101 		sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1102 		if (set & BIT(NL80211_STA_FLAG_MFP))
1103 			set_sta_flag(sta, WLAN_STA_MFP);
1104 		else
1105 			clear_sta_flag(sta, WLAN_STA_MFP);
1106 	}
1107 
1108 	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1109 		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1110 			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1111 		else
1112 			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1113 	}
1114 
1115 	/* mark TDLS channel switch support, if the AP allows it */
1116 	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1117 	    !sdata->u.mgd.tdls_chan_switch_prohibited &&
1118 	    params->ext_capab_len >= 4 &&
1119 	    params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1120 		set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1121 
1122 	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1123 	    !sdata->u.mgd.tdls_wider_bw_prohibited &&
1124 	    ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1125 	    params->ext_capab_len >= 8 &&
1126 	    params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1127 		set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1128 
1129 	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1130 		sta->sta.uapsd_queues = params->uapsd_queues;
1131 		sta->sta.max_sp = params->max_sp;
1132 	}
1133 
1134 	/*
1135 	 * cfg80211 validates this (1-2007) and allows setting the AID
1136 	 * only when creating a new station entry
1137 	 */
1138 	if (params->aid)
1139 		sta->sta.aid = params->aid;
1140 
1141 	/*
1142 	 * Some of the following updates would be racy if called on an
1143 	 * existing station, via ieee80211_change_station(). However,
1144 	 * all such changes are rejected by cfg80211 except for updates
1145 	 * changing the supported rates on an existing but not yet used
1146 	 * TDLS peer.
1147 	 */
1148 
1149 	if (params->listen_interval >= 0)
1150 		sta->listen_interval = params->listen_interval;
1151 
1152 	if (params->supported_rates) {
1153 		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1154 					 sband, params->supported_rates,
1155 					 params->supported_rates_len,
1156 					 &sta->sta.supp_rates[band]);
1157 	}
1158 
1159 	if (params->ht_capa)
1160 		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1161 						  params->ht_capa, sta);
1162 
1163 	if (params->vht_capa)
1164 		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1165 						    params->vht_capa, sta);
1166 
1167 	if (params->opmode_notif_used) {
1168 		/* returned value is only needed for rc update, but the
1169 		 * rc isn't initialized here yet, so ignore it
1170 		 */
1171 		__ieee80211_vht_handle_opmode(sdata, sta,
1172 					      params->opmode_notif, band);
1173 	}
1174 
1175 	if (ieee80211_vif_is_mesh(&sdata->vif))
1176 		sta_apply_mesh_params(local, sta, params);
1177 
1178 	/* set the STA state after all sta info from usermode has been set */
1179 	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1180 	    set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1181 		ret = sta_apply_auth_flags(local, sta, mask, set);
1182 		if (ret)
1183 			return ret;
1184 	}
1185 
1186 	return 0;
1187 }
1188 
1189 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1190 				 const u8 *mac,
1191 				 struct station_parameters *params)
1192 {
1193 	struct ieee80211_local *local = wiphy_priv(wiphy);
1194 	struct sta_info *sta;
1195 	struct ieee80211_sub_if_data *sdata;
1196 	int err;
1197 	int layer2_update;
1198 
1199 	if (params->vlan) {
1200 		sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1201 
1202 		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1203 		    sdata->vif.type != NL80211_IFTYPE_AP)
1204 			return -EINVAL;
1205 	} else
1206 		sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1207 
1208 	if (ether_addr_equal(mac, sdata->vif.addr))
1209 		return -EINVAL;
1210 
1211 	if (is_multicast_ether_addr(mac))
1212 		return -EINVAL;
1213 
1214 	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1215 	if (!sta)
1216 		return -ENOMEM;
1217 
1218 	/*
1219 	 * defaults -- if userspace wants something else we'll
1220 	 * change it accordingly in sta_apply_parameters()
1221 	 */
1222 	if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
1223 	    !(params->sta_flags_set & (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1224 					BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1225 		sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1226 		sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1227 	}
1228 	if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1229 		sta->sta.tdls = true;
1230 
1231 	err = sta_apply_parameters(local, sta, params);
1232 	if (err) {
1233 		sta_info_free(local, sta);
1234 		return err;
1235 	}
1236 
1237 	/*
1238 	 * for TDLS and for unassociated station, rate control should be
1239 	 * initialized only when rates are known and station is marked
1240 	 * authorized/associated
1241 	 */
1242 	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1243 	    test_sta_flag(sta, WLAN_STA_ASSOC))
1244 		rate_control_rate_init(sta);
1245 
1246 	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1247 		sdata->vif.type == NL80211_IFTYPE_AP;
1248 
1249 	err = sta_info_insert_rcu(sta);
1250 	if (err) {
1251 		rcu_read_unlock();
1252 		return err;
1253 	}
1254 
1255 	if (layer2_update)
1256 		ieee80211_send_layer2_update(sta);
1257 
1258 	rcu_read_unlock();
1259 
1260 	return 0;
1261 }
1262 
1263 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1264 				 struct station_del_parameters *params)
1265 {
1266 	struct ieee80211_sub_if_data *sdata;
1267 
1268 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1269 
1270 	if (params->mac)
1271 		return sta_info_destroy_addr_bss(sdata, params->mac);
1272 
1273 	sta_info_flush(sdata);
1274 	return 0;
1275 }
1276 
1277 static int ieee80211_change_station(struct wiphy *wiphy,
1278 				    struct net_device *dev, const u8 *mac,
1279 				    struct station_parameters *params)
1280 {
1281 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1282 	struct ieee80211_local *local = wiphy_priv(wiphy);
1283 	struct sta_info *sta;
1284 	struct ieee80211_sub_if_data *vlansdata;
1285 	enum cfg80211_station_type statype;
1286 	int err;
1287 
1288 	mutex_lock(&local->sta_mtx);
1289 
1290 	sta = sta_info_get_bss(sdata, mac);
1291 	if (!sta) {
1292 		err = -ENOENT;
1293 		goto out_err;
1294 	}
1295 
1296 	switch (sdata->vif.type) {
1297 	case NL80211_IFTYPE_MESH_POINT:
1298 		if (sdata->u.mesh.user_mpm)
1299 			statype = CFG80211_STA_MESH_PEER_USER;
1300 		else
1301 			statype = CFG80211_STA_MESH_PEER_KERNEL;
1302 		break;
1303 	case NL80211_IFTYPE_ADHOC:
1304 		statype = CFG80211_STA_IBSS;
1305 		break;
1306 	case NL80211_IFTYPE_STATION:
1307 		if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1308 			statype = CFG80211_STA_AP_STA;
1309 			break;
1310 		}
1311 		if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1312 			statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1313 		else
1314 			statype = CFG80211_STA_TDLS_PEER_SETUP;
1315 		break;
1316 	case NL80211_IFTYPE_AP:
1317 	case NL80211_IFTYPE_AP_VLAN:
1318 		if (test_sta_flag(sta, WLAN_STA_ASSOC))
1319 			statype = CFG80211_STA_AP_CLIENT;
1320 		else
1321 			statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1322 		break;
1323 	default:
1324 		err = -EOPNOTSUPP;
1325 		goto out_err;
1326 	}
1327 
1328 	err = cfg80211_check_station_change(wiphy, params, statype);
1329 	if (err)
1330 		goto out_err;
1331 
1332 	if (params->vlan && params->vlan != sta->sdata->dev) {
1333 		bool prev_4addr = false;
1334 		bool new_4addr = false;
1335 
1336 		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1337 
1338 		if (params->vlan->ieee80211_ptr->use_4addr) {
1339 			if (vlansdata->u.vlan.sta) {
1340 				err = -EBUSY;
1341 				goto out_err;
1342 			}
1343 
1344 			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1345 			new_4addr = true;
1346 		}
1347 
1348 		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1349 		    sta->sdata->u.vlan.sta) {
1350 			RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1351 			prev_4addr = true;
1352 		}
1353 
1354 		sta->sdata = vlansdata;
1355 		ieee80211_check_fast_xmit(sta);
1356 
1357 		if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1358 		    prev_4addr != new_4addr) {
1359 			if (new_4addr)
1360 				atomic_dec(&sta->sdata->bss->num_mcast_sta);
1361 			else
1362 				atomic_inc(&sta->sdata->bss->num_mcast_sta);
1363 		}
1364 
1365 		ieee80211_send_layer2_update(sta);
1366 	}
1367 
1368 	err = sta_apply_parameters(local, sta, params);
1369 	if (err)
1370 		goto out_err;
1371 
1372 	mutex_unlock(&local->sta_mtx);
1373 
1374 	if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1375 	     sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1376 	    sta->known_smps_mode != sta->sdata->bss->req_smps &&
1377 	    test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1378 	    sta_info_tx_streams(sta) != 1) {
1379 		ht_dbg(sta->sdata,
1380 		       "%pM just authorized and MIMO capable - update SMPS\n",
1381 		       sta->sta.addr);
1382 		ieee80211_send_smps_action(sta->sdata,
1383 			sta->sdata->bss->req_smps,
1384 			sta->sta.addr,
1385 			sta->sdata->vif.bss_conf.bssid);
1386 	}
1387 
1388 	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1389 	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1390 		ieee80211_recalc_ps(local);
1391 		ieee80211_recalc_ps_vif(sdata);
1392 	}
1393 
1394 	return 0;
1395 out_err:
1396 	mutex_unlock(&local->sta_mtx);
1397 	return err;
1398 }
1399 
1400 #ifdef CONFIG_MAC80211_MESH
1401 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1402 			       const u8 *dst, const u8 *next_hop)
1403 {
1404 	struct ieee80211_sub_if_data *sdata;
1405 	struct mesh_path *mpath;
1406 	struct sta_info *sta;
1407 
1408 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1409 
1410 	rcu_read_lock();
1411 	sta = sta_info_get(sdata, next_hop);
1412 	if (!sta) {
1413 		rcu_read_unlock();
1414 		return -ENOENT;
1415 	}
1416 
1417 	mpath = mesh_path_add(sdata, dst);
1418 	if (IS_ERR(mpath)) {
1419 		rcu_read_unlock();
1420 		return PTR_ERR(mpath);
1421 	}
1422 
1423 	mesh_path_fix_nexthop(mpath, sta);
1424 
1425 	rcu_read_unlock();
1426 	return 0;
1427 }
1428 
1429 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1430 			       const u8 *dst)
1431 {
1432 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1433 
1434 	if (dst)
1435 		return mesh_path_del(sdata, dst);
1436 
1437 	mesh_path_flush_by_iface(sdata);
1438 	return 0;
1439 }
1440 
1441 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1442 				  const u8 *dst, const u8 *next_hop)
1443 {
1444 	struct ieee80211_sub_if_data *sdata;
1445 	struct mesh_path *mpath;
1446 	struct sta_info *sta;
1447 
1448 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1449 
1450 	rcu_read_lock();
1451 
1452 	sta = sta_info_get(sdata, next_hop);
1453 	if (!sta) {
1454 		rcu_read_unlock();
1455 		return -ENOENT;
1456 	}
1457 
1458 	mpath = mesh_path_lookup(sdata, dst);
1459 	if (!mpath) {
1460 		rcu_read_unlock();
1461 		return -ENOENT;
1462 	}
1463 
1464 	mesh_path_fix_nexthop(mpath, sta);
1465 
1466 	rcu_read_unlock();
1467 	return 0;
1468 }
1469 
1470 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1471 			    struct mpath_info *pinfo)
1472 {
1473 	struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1474 
1475 	if (next_hop_sta)
1476 		memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1477 	else
1478 		eth_zero_addr(next_hop);
1479 
1480 	memset(pinfo, 0, sizeof(*pinfo));
1481 
1482 	pinfo->generation = mesh_paths_generation;
1483 
1484 	pinfo->filled = MPATH_INFO_FRAME_QLEN |
1485 			MPATH_INFO_SN |
1486 			MPATH_INFO_METRIC |
1487 			MPATH_INFO_EXPTIME |
1488 			MPATH_INFO_DISCOVERY_TIMEOUT |
1489 			MPATH_INFO_DISCOVERY_RETRIES |
1490 			MPATH_INFO_FLAGS;
1491 
1492 	pinfo->frame_qlen = mpath->frame_queue.qlen;
1493 	pinfo->sn = mpath->sn;
1494 	pinfo->metric = mpath->metric;
1495 	if (time_before(jiffies, mpath->exp_time))
1496 		pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1497 	pinfo->discovery_timeout =
1498 			jiffies_to_msecs(mpath->discovery_timeout);
1499 	pinfo->discovery_retries = mpath->discovery_retries;
1500 	if (mpath->flags & MESH_PATH_ACTIVE)
1501 		pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1502 	if (mpath->flags & MESH_PATH_RESOLVING)
1503 		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1504 	if (mpath->flags & MESH_PATH_SN_VALID)
1505 		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1506 	if (mpath->flags & MESH_PATH_FIXED)
1507 		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1508 	if (mpath->flags & MESH_PATH_RESOLVED)
1509 		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1510 }
1511 
1512 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1513 			       u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1514 
1515 {
1516 	struct ieee80211_sub_if_data *sdata;
1517 	struct mesh_path *mpath;
1518 
1519 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1520 
1521 	rcu_read_lock();
1522 	mpath = mesh_path_lookup(sdata, dst);
1523 	if (!mpath) {
1524 		rcu_read_unlock();
1525 		return -ENOENT;
1526 	}
1527 	memcpy(dst, mpath->dst, ETH_ALEN);
1528 	mpath_set_pinfo(mpath, next_hop, pinfo);
1529 	rcu_read_unlock();
1530 	return 0;
1531 }
1532 
1533 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1534 				int idx, u8 *dst, u8 *next_hop,
1535 				struct mpath_info *pinfo)
1536 {
1537 	struct ieee80211_sub_if_data *sdata;
1538 	struct mesh_path *mpath;
1539 
1540 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1541 
1542 	rcu_read_lock();
1543 	mpath = mesh_path_lookup_by_idx(sdata, idx);
1544 	if (!mpath) {
1545 		rcu_read_unlock();
1546 		return -ENOENT;
1547 	}
1548 	memcpy(dst, mpath->dst, ETH_ALEN);
1549 	mpath_set_pinfo(mpath, next_hop, pinfo);
1550 	rcu_read_unlock();
1551 	return 0;
1552 }
1553 
1554 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1555 			  struct mpath_info *pinfo)
1556 {
1557 	memset(pinfo, 0, sizeof(*pinfo));
1558 	memcpy(mpp, mpath->mpp, ETH_ALEN);
1559 
1560 	pinfo->generation = mpp_paths_generation;
1561 }
1562 
1563 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1564 			     u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1565 
1566 {
1567 	struct ieee80211_sub_if_data *sdata;
1568 	struct mesh_path *mpath;
1569 
1570 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1571 
1572 	rcu_read_lock();
1573 	mpath = mpp_path_lookup(sdata, dst);
1574 	if (!mpath) {
1575 		rcu_read_unlock();
1576 		return -ENOENT;
1577 	}
1578 	memcpy(dst, mpath->dst, ETH_ALEN);
1579 	mpp_set_pinfo(mpath, mpp, pinfo);
1580 	rcu_read_unlock();
1581 	return 0;
1582 }
1583 
1584 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1585 			      int idx, u8 *dst, u8 *mpp,
1586 			      struct mpath_info *pinfo)
1587 {
1588 	struct ieee80211_sub_if_data *sdata;
1589 	struct mesh_path *mpath;
1590 
1591 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1592 
1593 	rcu_read_lock();
1594 	mpath = mpp_path_lookup_by_idx(sdata, idx);
1595 	if (!mpath) {
1596 		rcu_read_unlock();
1597 		return -ENOENT;
1598 	}
1599 	memcpy(dst, mpath->dst, ETH_ALEN);
1600 	mpp_set_pinfo(mpath, mpp, pinfo);
1601 	rcu_read_unlock();
1602 	return 0;
1603 }
1604 
1605 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1606 				struct net_device *dev,
1607 				struct mesh_config *conf)
1608 {
1609 	struct ieee80211_sub_if_data *sdata;
1610 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1611 
1612 	memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1613 	return 0;
1614 }
1615 
1616 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1617 {
1618 	return (mask >> (parm-1)) & 0x1;
1619 }
1620 
1621 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1622 		const struct mesh_setup *setup)
1623 {
1624 	u8 *new_ie;
1625 	const u8 *old_ie;
1626 	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1627 					struct ieee80211_sub_if_data, u.mesh);
1628 
1629 	/* allocate information elements */
1630 	new_ie = NULL;
1631 	old_ie = ifmsh->ie;
1632 
1633 	if (setup->ie_len) {
1634 		new_ie = kmemdup(setup->ie, setup->ie_len,
1635 				GFP_KERNEL);
1636 		if (!new_ie)
1637 			return -ENOMEM;
1638 	}
1639 	ifmsh->ie_len = setup->ie_len;
1640 	ifmsh->ie = new_ie;
1641 	kfree(old_ie);
1642 
1643 	/* now copy the rest of the setup parameters */
1644 	ifmsh->mesh_id_len = setup->mesh_id_len;
1645 	memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1646 	ifmsh->mesh_sp_id = setup->sync_method;
1647 	ifmsh->mesh_pp_id = setup->path_sel_proto;
1648 	ifmsh->mesh_pm_id = setup->path_metric;
1649 	ifmsh->user_mpm = setup->user_mpm;
1650 	ifmsh->mesh_auth_id = setup->auth_id;
1651 	ifmsh->security = IEEE80211_MESH_SEC_NONE;
1652 	if (setup->is_authenticated)
1653 		ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1654 	if (setup->is_secure)
1655 		ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1656 
1657 	/* mcast rate setting in Mesh Node */
1658 	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1659 						sizeof(setup->mcast_rate));
1660 	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1661 
1662 	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1663 	sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1664 
1665 	return 0;
1666 }
1667 
1668 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1669 					struct net_device *dev, u32 mask,
1670 					const struct mesh_config *nconf)
1671 {
1672 	struct mesh_config *conf;
1673 	struct ieee80211_sub_if_data *sdata;
1674 	struct ieee80211_if_mesh *ifmsh;
1675 
1676 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1677 	ifmsh = &sdata->u.mesh;
1678 
1679 	/* Set the config options which we are interested in setting */
1680 	conf = &(sdata->u.mesh.mshcfg);
1681 	if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1682 		conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1683 	if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1684 		conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1685 	if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1686 		conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1687 	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1688 		conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1689 	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1690 		conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1691 	if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1692 		conf->dot11MeshTTL = nconf->dot11MeshTTL;
1693 	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1694 		conf->element_ttl = nconf->element_ttl;
1695 	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1696 		if (ifmsh->user_mpm)
1697 			return -EBUSY;
1698 		conf->auto_open_plinks = nconf->auto_open_plinks;
1699 	}
1700 	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1701 		conf->dot11MeshNbrOffsetMaxNeighbor =
1702 			nconf->dot11MeshNbrOffsetMaxNeighbor;
1703 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1704 		conf->dot11MeshHWMPmaxPREQretries =
1705 			nconf->dot11MeshHWMPmaxPREQretries;
1706 	if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1707 		conf->path_refresh_time = nconf->path_refresh_time;
1708 	if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1709 		conf->min_discovery_timeout = nconf->min_discovery_timeout;
1710 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1711 		conf->dot11MeshHWMPactivePathTimeout =
1712 			nconf->dot11MeshHWMPactivePathTimeout;
1713 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1714 		conf->dot11MeshHWMPpreqMinInterval =
1715 			nconf->dot11MeshHWMPpreqMinInterval;
1716 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1717 		conf->dot11MeshHWMPperrMinInterval =
1718 			nconf->dot11MeshHWMPperrMinInterval;
1719 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1720 			   mask))
1721 		conf->dot11MeshHWMPnetDiameterTraversalTime =
1722 			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1723 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1724 		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1725 		ieee80211_mesh_root_setup(ifmsh);
1726 	}
1727 	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1728 		/* our current gate announcement implementation rides on root
1729 		 * announcements, so require this ifmsh to also be a root node
1730 		 * */
1731 		if (nconf->dot11MeshGateAnnouncementProtocol &&
1732 		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1733 			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1734 			ieee80211_mesh_root_setup(ifmsh);
1735 		}
1736 		conf->dot11MeshGateAnnouncementProtocol =
1737 			nconf->dot11MeshGateAnnouncementProtocol;
1738 	}
1739 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1740 		conf->dot11MeshHWMPRannInterval =
1741 			nconf->dot11MeshHWMPRannInterval;
1742 	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1743 		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1744 	if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1745 		/* our RSSI threshold implementation is supported only for
1746 		 * devices that report signal in dBm.
1747 		 */
1748 		if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1749 			return -ENOTSUPP;
1750 		conf->rssi_threshold = nconf->rssi_threshold;
1751 	}
1752 	if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1753 		conf->ht_opmode = nconf->ht_opmode;
1754 		sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1755 		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1756 	}
1757 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1758 		conf->dot11MeshHWMPactivePathToRootTimeout =
1759 			nconf->dot11MeshHWMPactivePathToRootTimeout;
1760 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1761 		conf->dot11MeshHWMProotInterval =
1762 			nconf->dot11MeshHWMProotInterval;
1763 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1764 		conf->dot11MeshHWMPconfirmationInterval =
1765 			nconf->dot11MeshHWMPconfirmationInterval;
1766 	if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1767 		conf->power_mode = nconf->power_mode;
1768 		ieee80211_mps_local_status_update(sdata);
1769 	}
1770 	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1771 		conf->dot11MeshAwakeWindowDuration =
1772 			nconf->dot11MeshAwakeWindowDuration;
1773 	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1774 		conf->plink_timeout = nconf->plink_timeout;
1775 	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1776 	return 0;
1777 }
1778 
1779 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1780 			       const struct mesh_config *conf,
1781 			       const struct mesh_setup *setup)
1782 {
1783 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1784 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1785 	int err;
1786 
1787 	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1788 	err = copy_mesh_setup(ifmsh, setup);
1789 	if (err)
1790 		return err;
1791 
1792 	/* can mesh use other SMPS modes? */
1793 	sdata->smps_mode = IEEE80211_SMPS_OFF;
1794 	sdata->needed_rx_chains = sdata->local->rx_chains;
1795 
1796 	mutex_lock(&sdata->local->mtx);
1797 	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1798 					IEEE80211_CHANCTX_SHARED);
1799 	mutex_unlock(&sdata->local->mtx);
1800 	if (err)
1801 		return err;
1802 
1803 	return ieee80211_start_mesh(sdata);
1804 }
1805 
1806 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1807 {
1808 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1809 
1810 	ieee80211_stop_mesh(sdata);
1811 	mutex_lock(&sdata->local->mtx);
1812 	ieee80211_vif_release_channel(sdata);
1813 	mutex_unlock(&sdata->local->mtx);
1814 
1815 	return 0;
1816 }
1817 #endif
1818 
1819 static int ieee80211_change_bss(struct wiphy *wiphy,
1820 				struct net_device *dev,
1821 				struct bss_parameters *params)
1822 {
1823 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1824 	enum ieee80211_band band;
1825 	u32 changed = 0;
1826 
1827 	if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1828 		return -ENOENT;
1829 
1830 	band = ieee80211_get_sdata_band(sdata);
1831 
1832 	if (params->use_cts_prot >= 0) {
1833 		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1834 		changed |= BSS_CHANGED_ERP_CTS_PROT;
1835 	}
1836 	if (params->use_short_preamble >= 0) {
1837 		sdata->vif.bss_conf.use_short_preamble =
1838 			params->use_short_preamble;
1839 		changed |= BSS_CHANGED_ERP_PREAMBLE;
1840 	}
1841 
1842 	if (!sdata->vif.bss_conf.use_short_slot &&
1843 	    band == IEEE80211_BAND_5GHZ) {
1844 		sdata->vif.bss_conf.use_short_slot = true;
1845 		changed |= BSS_CHANGED_ERP_SLOT;
1846 	}
1847 
1848 	if (params->use_short_slot_time >= 0) {
1849 		sdata->vif.bss_conf.use_short_slot =
1850 			params->use_short_slot_time;
1851 		changed |= BSS_CHANGED_ERP_SLOT;
1852 	}
1853 
1854 	if (params->basic_rates) {
1855 		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1856 					 wiphy->bands[band],
1857 					 params->basic_rates,
1858 					 params->basic_rates_len,
1859 					 &sdata->vif.bss_conf.basic_rates);
1860 		changed |= BSS_CHANGED_BASIC_RATES;
1861 	}
1862 
1863 	if (params->ap_isolate >= 0) {
1864 		if (params->ap_isolate)
1865 			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1866 		else
1867 			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1868 	}
1869 
1870 	if (params->ht_opmode >= 0) {
1871 		sdata->vif.bss_conf.ht_operation_mode =
1872 			(u16) params->ht_opmode;
1873 		changed |= BSS_CHANGED_HT;
1874 	}
1875 
1876 	if (params->p2p_ctwindow >= 0) {
1877 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1878 					~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1879 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1880 			params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1881 		changed |= BSS_CHANGED_P2P_PS;
1882 	}
1883 
1884 	if (params->p2p_opp_ps > 0) {
1885 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1886 					IEEE80211_P2P_OPPPS_ENABLE_BIT;
1887 		changed |= BSS_CHANGED_P2P_PS;
1888 	} else if (params->p2p_opp_ps == 0) {
1889 		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1890 					~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1891 		changed |= BSS_CHANGED_P2P_PS;
1892 	}
1893 
1894 	ieee80211_bss_info_change_notify(sdata, changed);
1895 
1896 	return 0;
1897 }
1898 
1899 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1900 				    struct net_device *dev,
1901 				    struct ieee80211_txq_params *params)
1902 {
1903 	struct ieee80211_local *local = wiphy_priv(wiphy);
1904 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1905 	struct ieee80211_tx_queue_params p;
1906 
1907 	if (!local->ops->conf_tx)
1908 		return -EOPNOTSUPP;
1909 
1910 	if (local->hw.queues < IEEE80211_NUM_ACS)
1911 		return -EOPNOTSUPP;
1912 
1913 	memset(&p, 0, sizeof(p));
1914 	p.aifs = params->aifs;
1915 	p.cw_max = params->cwmax;
1916 	p.cw_min = params->cwmin;
1917 	p.txop = params->txop;
1918 
1919 	/*
1920 	 * Setting tx queue params disables u-apsd because it's only
1921 	 * called in master mode.
1922 	 */
1923 	p.uapsd = false;
1924 
1925 	sdata->tx_conf[params->ac] = p;
1926 	if (drv_conf_tx(local, sdata, params->ac, &p)) {
1927 		wiphy_debug(local->hw.wiphy,
1928 			    "failed to set TX queue parameters for AC %d\n",
1929 			    params->ac);
1930 		return -EINVAL;
1931 	}
1932 
1933 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1934 
1935 	return 0;
1936 }
1937 
1938 #ifdef CONFIG_PM
1939 static int ieee80211_suspend(struct wiphy *wiphy,
1940 			     struct cfg80211_wowlan *wowlan)
1941 {
1942 	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1943 }
1944 
1945 static int ieee80211_resume(struct wiphy *wiphy)
1946 {
1947 	return __ieee80211_resume(wiphy_priv(wiphy));
1948 }
1949 #else
1950 #define ieee80211_suspend NULL
1951 #define ieee80211_resume NULL
1952 #endif
1953 
1954 static int ieee80211_scan(struct wiphy *wiphy,
1955 			  struct cfg80211_scan_request *req)
1956 {
1957 	struct ieee80211_sub_if_data *sdata;
1958 
1959 	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1960 
1961 	switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1962 	case NL80211_IFTYPE_STATION:
1963 	case NL80211_IFTYPE_ADHOC:
1964 	case NL80211_IFTYPE_MESH_POINT:
1965 	case NL80211_IFTYPE_P2P_CLIENT:
1966 	case NL80211_IFTYPE_P2P_DEVICE:
1967 		break;
1968 	case NL80211_IFTYPE_P2P_GO:
1969 		if (sdata->local->ops->hw_scan)
1970 			break;
1971 		/*
1972 		 * FIXME: implement NoA while scanning in software,
1973 		 * for now fall through to allow scanning only when
1974 		 * beaconing hasn't been configured yet
1975 		 */
1976 	case NL80211_IFTYPE_AP:
1977 		/*
1978 		 * If the scan has been forced (and the driver supports
1979 		 * forcing), don't care about being beaconing already.
1980 		 * This will create problems to the attached stations (e.g. all
1981 		 * the  frames sent while scanning on other channel will be
1982 		 * lost)
1983 		 */
1984 		if (sdata->u.ap.beacon &&
1985 		    (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1986 		     !(req->flags & NL80211_SCAN_FLAG_AP)))
1987 			return -EOPNOTSUPP;
1988 		break;
1989 	default:
1990 		return -EOPNOTSUPP;
1991 	}
1992 
1993 	return ieee80211_request_scan(sdata, req);
1994 }
1995 
1996 static int
1997 ieee80211_sched_scan_start(struct wiphy *wiphy,
1998 			   struct net_device *dev,
1999 			   struct cfg80211_sched_scan_request *req)
2000 {
2001 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2002 
2003 	if (!sdata->local->ops->sched_scan_start)
2004 		return -EOPNOTSUPP;
2005 
2006 	return ieee80211_request_sched_scan_start(sdata, req);
2007 }
2008 
2009 static int
2010 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2011 {
2012 	struct ieee80211_local *local = wiphy_priv(wiphy);
2013 
2014 	if (!local->ops->sched_scan_stop)
2015 		return -EOPNOTSUPP;
2016 
2017 	return ieee80211_request_sched_scan_stop(local);
2018 }
2019 
2020 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2021 			  struct cfg80211_auth_request *req)
2022 {
2023 	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2024 }
2025 
2026 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2027 			   struct cfg80211_assoc_request *req)
2028 {
2029 	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2030 }
2031 
2032 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2033 			    struct cfg80211_deauth_request *req)
2034 {
2035 	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2036 }
2037 
2038 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2039 			      struct cfg80211_disassoc_request *req)
2040 {
2041 	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2042 }
2043 
2044 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2045 			       struct cfg80211_ibss_params *params)
2046 {
2047 	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2048 }
2049 
2050 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2051 {
2052 	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2053 }
2054 
2055 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2056 			      struct ocb_setup *setup)
2057 {
2058 	return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2059 }
2060 
2061 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2062 {
2063 	return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2064 }
2065 
2066 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2067 				    int rate[IEEE80211_NUM_BANDS])
2068 {
2069 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2070 
2071 	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2072 	       sizeof(int) * IEEE80211_NUM_BANDS);
2073 
2074 	return 0;
2075 }
2076 
2077 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2078 {
2079 	struct ieee80211_local *local = wiphy_priv(wiphy);
2080 	int err;
2081 
2082 	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2083 		ieee80211_check_fast_xmit_all(local);
2084 
2085 		err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2086 
2087 		if (err) {
2088 			ieee80211_check_fast_xmit_all(local);
2089 			return err;
2090 		}
2091 	}
2092 
2093 	if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2094 	    (changed & WIPHY_PARAM_DYN_ACK)) {
2095 		s16 coverage_class;
2096 
2097 		coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2098 					wiphy->coverage_class : -1;
2099 		err = drv_set_coverage_class(local, coverage_class);
2100 
2101 		if (err)
2102 			return err;
2103 	}
2104 
2105 	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2106 		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2107 
2108 		if (err)
2109 			return err;
2110 	}
2111 
2112 	if (changed & WIPHY_PARAM_RETRY_SHORT) {
2113 		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2114 			return -EINVAL;
2115 		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2116 	}
2117 	if (changed & WIPHY_PARAM_RETRY_LONG) {
2118 		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2119 			return -EINVAL;
2120 		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2121 	}
2122 	if (changed &
2123 	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2124 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2125 
2126 	return 0;
2127 }
2128 
2129 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2130 				  struct wireless_dev *wdev,
2131 				  enum nl80211_tx_power_setting type, int mbm)
2132 {
2133 	struct ieee80211_local *local = wiphy_priv(wiphy);
2134 	struct ieee80211_sub_if_data *sdata;
2135 	enum nl80211_tx_power_setting txp_type = type;
2136 	bool update_txp_type = false;
2137 
2138 	if (wdev) {
2139 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2140 
2141 		switch (type) {
2142 		case NL80211_TX_POWER_AUTOMATIC:
2143 			sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2144 			txp_type = NL80211_TX_POWER_LIMITED;
2145 			break;
2146 		case NL80211_TX_POWER_LIMITED:
2147 		case NL80211_TX_POWER_FIXED:
2148 			if (mbm < 0 || (mbm % 100))
2149 				return -EOPNOTSUPP;
2150 			sdata->user_power_level = MBM_TO_DBM(mbm);
2151 			break;
2152 		}
2153 
2154 		if (txp_type != sdata->vif.bss_conf.txpower_type) {
2155 			update_txp_type = true;
2156 			sdata->vif.bss_conf.txpower_type = txp_type;
2157 		}
2158 
2159 		ieee80211_recalc_txpower(sdata, update_txp_type);
2160 
2161 		return 0;
2162 	}
2163 
2164 	switch (type) {
2165 	case NL80211_TX_POWER_AUTOMATIC:
2166 		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2167 		txp_type = NL80211_TX_POWER_LIMITED;
2168 		break;
2169 	case NL80211_TX_POWER_LIMITED:
2170 	case NL80211_TX_POWER_FIXED:
2171 		if (mbm < 0 || (mbm % 100))
2172 			return -EOPNOTSUPP;
2173 		local->user_power_level = MBM_TO_DBM(mbm);
2174 		break;
2175 	}
2176 
2177 	mutex_lock(&local->iflist_mtx);
2178 	list_for_each_entry(sdata, &local->interfaces, list) {
2179 		sdata->user_power_level = local->user_power_level;
2180 		if (txp_type != sdata->vif.bss_conf.txpower_type)
2181 			update_txp_type = true;
2182 		sdata->vif.bss_conf.txpower_type = txp_type;
2183 	}
2184 	list_for_each_entry(sdata, &local->interfaces, list)
2185 		ieee80211_recalc_txpower(sdata, update_txp_type);
2186 	mutex_unlock(&local->iflist_mtx);
2187 
2188 	return 0;
2189 }
2190 
2191 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2192 				  struct wireless_dev *wdev,
2193 				  int *dbm)
2194 {
2195 	struct ieee80211_local *local = wiphy_priv(wiphy);
2196 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2197 
2198 	if (local->ops->get_txpower)
2199 		return drv_get_txpower(local, sdata, dbm);
2200 
2201 	if (!local->use_chanctx)
2202 		*dbm = local->hw.conf.power_level;
2203 	else
2204 		*dbm = sdata->vif.bss_conf.txpower;
2205 
2206 	return 0;
2207 }
2208 
2209 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2210 				  const u8 *addr)
2211 {
2212 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2213 
2214 	memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2215 
2216 	return 0;
2217 }
2218 
2219 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2220 {
2221 	struct ieee80211_local *local = wiphy_priv(wiphy);
2222 
2223 	drv_rfkill_poll(local);
2224 }
2225 
2226 #ifdef CONFIG_NL80211_TESTMODE
2227 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2228 				  struct wireless_dev *wdev,
2229 				  void *data, int len)
2230 {
2231 	struct ieee80211_local *local = wiphy_priv(wiphy);
2232 	struct ieee80211_vif *vif = NULL;
2233 
2234 	if (!local->ops->testmode_cmd)
2235 		return -EOPNOTSUPP;
2236 
2237 	if (wdev) {
2238 		struct ieee80211_sub_if_data *sdata;
2239 
2240 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2241 		if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2242 			vif = &sdata->vif;
2243 	}
2244 
2245 	return local->ops->testmode_cmd(&local->hw, vif, data, len);
2246 }
2247 
2248 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2249 				   struct sk_buff *skb,
2250 				   struct netlink_callback *cb,
2251 				   void *data, int len)
2252 {
2253 	struct ieee80211_local *local = wiphy_priv(wiphy);
2254 
2255 	if (!local->ops->testmode_dump)
2256 		return -EOPNOTSUPP;
2257 
2258 	return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2259 }
2260 #endif
2261 
2262 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2263 				enum ieee80211_smps_mode smps_mode)
2264 {
2265 	struct sta_info *sta;
2266 	enum ieee80211_smps_mode old_req;
2267 
2268 	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2269 		return -EINVAL;
2270 
2271 	if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2272 		return 0;
2273 
2274 	old_req = sdata->u.ap.req_smps;
2275 	sdata->u.ap.req_smps = smps_mode;
2276 
2277 	/* AUTOMATIC doesn't mean much for AP - don't allow it */
2278 	if (old_req == smps_mode ||
2279 	    smps_mode == IEEE80211_SMPS_AUTOMATIC)
2280 		return 0;
2281 
2282 	 /* If no associated stations, there's no need to do anything */
2283 	if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2284 		sdata->smps_mode = smps_mode;
2285 		ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2286 		return 0;
2287 	}
2288 
2289 	ht_dbg(sdata,
2290 	       "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2291 	       smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2292 
2293 	mutex_lock(&sdata->local->sta_mtx);
2294 	list_for_each_entry(sta, &sdata->local->sta_list, list) {
2295 		/*
2296 		 * Only stations associated to our AP and
2297 		 * associated VLANs
2298 		 */
2299 		if (sta->sdata->bss != &sdata->u.ap)
2300 			continue;
2301 
2302 		/* This station doesn't support MIMO - skip it */
2303 		if (sta_info_tx_streams(sta) == 1)
2304 			continue;
2305 
2306 		/*
2307 		 * Don't wake up a STA just to send the action frame
2308 		 * unless we are getting more restrictive.
2309 		 */
2310 		if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2311 		    !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2312 						   smps_mode)) {
2313 			ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2314 			       sta->sta.addr);
2315 			continue;
2316 		}
2317 
2318 		/*
2319 		 * If the STA is not authorized, wait until it gets
2320 		 * authorized and the action frame will be sent then.
2321 		 */
2322 		if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2323 			continue;
2324 
2325 		ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2326 		ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2327 					   sdata->vif.bss_conf.bssid);
2328 	}
2329 	mutex_unlock(&sdata->local->sta_mtx);
2330 
2331 	sdata->smps_mode = smps_mode;
2332 	ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2333 
2334 	return 0;
2335 }
2336 
2337 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2338 				 enum ieee80211_smps_mode smps_mode)
2339 {
2340 	const u8 *ap;
2341 	enum ieee80211_smps_mode old_req;
2342 	int err;
2343 	struct sta_info *sta;
2344 	bool tdls_peer_found = false;
2345 
2346 	lockdep_assert_held(&sdata->wdev.mtx);
2347 
2348 	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2349 		return -EINVAL;
2350 
2351 	old_req = sdata->u.mgd.req_smps;
2352 	sdata->u.mgd.req_smps = smps_mode;
2353 
2354 	if (old_req == smps_mode &&
2355 	    smps_mode != IEEE80211_SMPS_AUTOMATIC)
2356 		return 0;
2357 
2358 	/*
2359 	 * If not associated, or current association is not an HT
2360 	 * association, there's no need to do anything, just store
2361 	 * the new value until we associate.
2362 	 */
2363 	if (!sdata->u.mgd.associated ||
2364 	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2365 		return 0;
2366 
2367 	ap = sdata->u.mgd.associated->bssid;
2368 
2369 	rcu_read_lock();
2370 	list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2371 		if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2372 		    !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2373 			continue;
2374 
2375 		tdls_peer_found = true;
2376 		break;
2377 	}
2378 	rcu_read_unlock();
2379 
2380 	if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2381 		if (tdls_peer_found || !sdata->u.mgd.powersave)
2382 			smps_mode = IEEE80211_SMPS_OFF;
2383 		else
2384 			smps_mode = IEEE80211_SMPS_DYNAMIC;
2385 	}
2386 
2387 	/* send SM PS frame to AP */
2388 	err = ieee80211_send_smps_action(sdata, smps_mode,
2389 					 ap, ap);
2390 	if (err)
2391 		sdata->u.mgd.req_smps = old_req;
2392 	else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2393 		ieee80211_teardown_tdls_peers(sdata);
2394 
2395 	return err;
2396 }
2397 
2398 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2399 				    bool enabled, int timeout)
2400 {
2401 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2402 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2403 
2404 	if (sdata->vif.type != NL80211_IFTYPE_STATION)
2405 		return -EOPNOTSUPP;
2406 
2407 	if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2408 		return -EOPNOTSUPP;
2409 
2410 	if (enabled == sdata->u.mgd.powersave &&
2411 	    timeout == local->dynamic_ps_forced_timeout)
2412 		return 0;
2413 
2414 	sdata->u.mgd.powersave = enabled;
2415 	local->dynamic_ps_forced_timeout = timeout;
2416 
2417 	/* no change, but if automatic follow powersave */
2418 	sdata_lock(sdata);
2419 	__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2420 	sdata_unlock(sdata);
2421 
2422 	if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2423 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2424 
2425 	ieee80211_recalc_ps(local);
2426 	ieee80211_recalc_ps_vif(sdata);
2427 
2428 	return 0;
2429 }
2430 
2431 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2432 					 struct net_device *dev,
2433 					 s32 rssi_thold, u32 rssi_hyst)
2434 {
2435 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2436 	struct ieee80211_vif *vif = &sdata->vif;
2437 	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2438 
2439 	if (rssi_thold == bss_conf->cqm_rssi_thold &&
2440 	    rssi_hyst == bss_conf->cqm_rssi_hyst)
2441 		return 0;
2442 
2443 	if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2444 	    !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2445 		return -EOPNOTSUPP;
2446 
2447 	bss_conf->cqm_rssi_thold = rssi_thold;
2448 	bss_conf->cqm_rssi_hyst = rssi_hyst;
2449 	sdata->u.mgd.last_cqm_event_signal = 0;
2450 
2451 	/* tell the driver upon association, unless already associated */
2452 	if (sdata->u.mgd.associated &&
2453 	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2454 		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2455 
2456 	return 0;
2457 }
2458 
2459 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2460 				      struct net_device *dev,
2461 				      const u8 *addr,
2462 				      const struct cfg80211_bitrate_mask *mask)
2463 {
2464 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2465 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2466 	int i, ret;
2467 
2468 	if (!ieee80211_sdata_running(sdata))
2469 		return -ENETDOWN;
2470 
2471 	if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2472 		ret = drv_set_bitrate_mask(local, sdata, mask);
2473 		if (ret)
2474 			return ret;
2475 	}
2476 
2477 	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2478 		struct ieee80211_supported_band *sband = wiphy->bands[i];
2479 		int j;
2480 
2481 		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2482 		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2483 		       sizeof(mask->control[i].ht_mcs));
2484 		memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2485 		       mask->control[i].vht_mcs,
2486 		       sizeof(mask->control[i].vht_mcs));
2487 
2488 		sdata->rc_has_mcs_mask[i] = false;
2489 		sdata->rc_has_vht_mcs_mask[i] = false;
2490 		if (!sband)
2491 			continue;
2492 
2493 		for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2494 			if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2495 				sdata->rc_has_mcs_mask[i] = true;
2496 				break;
2497 			}
2498 		}
2499 
2500 		for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2501 			if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2502 				sdata->rc_has_vht_mcs_mask[i] = true;
2503 				break;
2504 			}
2505 		}
2506 	}
2507 
2508 	return 0;
2509 }
2510 
2511 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2512 					   struct ieee80211_roc_work *new_roc,
2513 					   struct ieee80211_roc_work *cur_roc)
2514 {
2515 	unsigned long now = jiffies;
2516 	unsigned long remaining = cur_roc->hw_start_time +
2517 				  msecs_to_jiffies(cur_roc->duration) -
2518 				  now;
2519 
2520 	if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2521 		return false;
2522 
2523 	/* if it doesn't fit entirely, schedule a new one */
2524 	if (new_roc->duration > jiffies_to_msecs(remaining))
2525 		return false;
2526 
2527 	ieee80211_handle_roc_started(new_roc);
2528 
2529 	/* add to dependents so we send the expired event properly */
2530 	list_add_tail(&new_roc->list, &cur_roc->dependents);
2531 	return true;
2532 }
2533 
2534 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2535 {
2536 	lockdep_assert_held(&local->mtx);
2537 
2538 	local->roc_cookie_counter++;
2539 
2540 	/* wow, you wrapped 64 bits ... more likely a bug */
2541 	if (WARN_ON(local->roc_cookie_counter == 0))
2542 		local->roc_cookie_counter++;
2543 
2544 	return local->roc_cookie_counter;
2545 }
2546 
2547 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2548 				    struct ieee80211_sub_if_data *sdata,
2549 				    struct ieee80211_channel *channel,
2550 				    unsigned int duration, u64 *cookie,
2551 				    struct sk_buff *txskb,
2552 				    enum ieee80211_roc_type type)
2553 {
2554 	struct ieee80211_roc_work *roc, *tmp;
2555 	bool queued = false;
2556 	int ret;
2557 
2558 	lockdep_assert_held(&local->mtx);
2559 
2560 	if (local->use_chanctx && !local->ops->remain_on_channel)
2561 		return -EOPNOTSUPP;
2562 
2563 	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2564 	if (!roc)
2565 		return -ENOMEM;
2566 
2567 	/*
2568 	 * If the duration is zero, then the driver
2569 	 * wouldn't actually do anything. Set it to
2570 	 * 10 for now.
2571 	 *
2572 	 * TODO: cancel the off-channel operation
2573 	 *       when we get the SKB's TX status and
2574 	 *       the wait time was zero before.
2575 	 */
2576 	if (!duration)
2577 		duration = 10;
2578 
2579 	roc->chan = channel;
2580 	roc->duration = duration;
2581 	roc->req_duration = duration;
2582 	roc->frame = txskb;
2583 	roc->type = type;
2584 	roc->sdata = sdata;
2585 	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2586 	INIT_LIST_HEAD(&roc->dependents);
2587 
2588 	/*
2589 	 * cookie is either the roc cookie (for normal roc)
2590 	 * or the SKB (for mgmt TX)
2591 	 */
2592 	if (!txskb) {
2593 		roc->cookie = ieee80211_mgmt_tx_cookie(local);
2594 		*cookie = roc->cookie;
2595 	} else {
2596 		roc->mgmt_tx_cookie = *cookie;
2597 	}
2598 
2599 	/* if there's one pending or we're scanning, queue this one */
2600 	if (!list_empty(&local->roc_list) ||
2601 	    local->scanning || ieee80211_is_radar_required(local))
2602 		goto out_check_combine;
2603 
2604 	/* if not HW assist, just queue & schedule work */
2605 	if (!local->ops->remain_on_channel) {
2606 		ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2607 		goto out_queue;
2608 	}
2609 
2610 	/* otherwise actually kick it off here (for error handling) */
2611 
2612 	ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2613 	if (ret) {
2614 		kfree(roc);
2615 		return ret;
2616 	}
2617 
2618 	roc->started = true;
2619 	goto out_queue;
2620 
2621  out_check_combine:
2622 	list_for_each_entry(tmp, &local->roc_list, list) {
2623 		if (tmp->chan != channel || tmp->sdata != sdata)
2624 			continue;
2625 
2626 		/*
2627 		 * Extend this ROC if possible:
2628 		 *
2629 		 * If it hasn't started yet, just increase the duration
2630 		 * and add the new one to the list of dependents.
2631 		 * If the type of the new ROC has higher priority, modify the
2632 		 * type of the previous one to match that of the new one.
2633 		 */
2634 		if (!tmp->started) {
2635 			list_add_tail(&roc->list, &tmp->dependents);
2636 			tmp->duration = max(tmp->duration, roc->duration);
2637 			tmp->type = max(tmp->type, roc->type);
2638 			queued = true;
2639 			break;
2640 		}
2641 
2642 		/* If it has already started, it's more difficult ... */
2643 		if (local->ops->remain_on_channel) {
2644 			/*
2645 			 * In the offloaded ROC case, if it hasn't begun, add
2646 			 * this new one to the dependent list to be handled
2647 			 * when the master one begins. If it has begun,
2648 			 * check if it fits entirely within the existing one,
2649 			 * in which case it will just be dependent as well.
2650 			 * Otherwise, schedule it by itself.
2651 			 */
2652 			if (!tmp->hw_begun) {
2653 				list_add_tail(&roc->list, &tmp->dependents);
2654 				queued = true;
2655 				break;
2656 			}
2657 
2658 			if (ieee80211_coalesce_started_roc(local, roc, tmp))
2659 				queued = true;
2660 		} else if (del_timer_sync(&tmp->work.timer)) {
2661 			unsigned long new_end;
2662 
2663 			/*
2664 			 * In the software ROC case, cancel the timer, if
2665 			 * that fails then the finish work is already
2666 			 * queued/pending and thus we queue the new ROC
2667 			 * normally, if that succeeds then we can extend
2668 			 * the timer duration and TX the frame (if any.)
2669 			 */
2670 
2671 			list_add_tail(&roc->list, &tmp->dependents);
2672 			queued = true;
2673 
2674 			new_end = jiffies + msecs_to_jiffies(roc->duration);
2675 
2676 			/* ok, it was started & we canceled timer */
2677 			if (time_after(new_end, tmp->work.timer.expires))
2678 				mod_timer(&tmp->work.timer, new_end);
2679 			else
2680 				add_timer(&tmp->work.timer);
2681 
2682 			ieee80211_handle_roc_started(roc);
2683 		}
2684 		break;
2685 	}
2686 
2687  out_queue:
2688 	if (!queued)
2689 		list_add_tail(&roc->list, &local->roc_list);
2690 
2691 	return 0;
2692 }
2693 
2694 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2695 				       struct wireless_dev *wdev,
2696 				       struct ieee80211_channel *chan,
2697 				       unsigned int duration,
2698 				       u64 *cookie)
2699 {
2700 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2701 	struct ieee80211_local *local = sdata->local;
2702 	int ret;
2703 
2704 	mutex_lock(&local->mtx);
2705 	ret = ieee80211_start_roc_work(local, sdata, chan,
2706 				       duration, cookie, NULL,
2707 				       IEEE80211_ROC_TYPE_NORMAL);
2708 	mutex_unlock(&local->mtx);
2709 
2710 	return ret;
2711 }
2712 
2713 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2714 				u64 cookie, bool mgmt_tx)
2715 {
2716 	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2717 	int ret;
2718 
2719 	mutex_lock(&local->mtx);
2720 	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2721 		struct ieee80211_roc_work *dep, *tmp2;
2722 
2723 		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2724 			if (!mgmt_tx && dep->cookie != cookie)
2725 				continue;
2726 			else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2727 				continue;
2728 			/* found dependent item -- just remove it */
2729 			list_del(&dep->list);
2730 			mutex_unlock(&local->mtx);
2731 
2732 			ieee80211_roc_notify_destroy(dep, true);
2733 			return 0;
2734 		}
2735 
2736 		if (!mgmt_tx && roc->cookie != cookie)
2737 			continue;
2738 		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2739 			continue;
2740 
2741 		found = roc;
2742 		break;
2743 	}
2744 
2745 	if (!found) {
2746 		mutex_unlock(&local->mtx);
2747 		return -ENOENT;
2748 	}
2749 
2750 	/*
2751 	 * We found the item to cancel, so do that. Note that it
2752 	 * may have dependents, which we also cancel (and send
2753 	 * the expired signal for.) Not doing so would be quite
2754 	 * tricky here, but we may need to fix it later.
2755 	 */
2756 
2757 	if (local->ops->remain_on_channel) {
2758 		if (found->started) {
2759 			ret = drv_cancel_remain_on_channel(local);
2760 			if (WARN_ON_ONCE(ret)) {
2761 				mutex_unlock(&local->mtx);
2762 				return ret;
2763 			}
2764 		}
2765 
2766 		list_del(&found->list);
2767 
2768 		if (found->started)
2769 			ieee80211_start_next_roc(local);
2770 		mutex_unlock(&local->mtx);
2771 
2772 		ieee80211_roc_notify_destroy(found, true);
2773 	} else {
2774 		/* work may be pending so use it all the time */
2775 		found->abort = true;
2776 		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2777 
2778 		mutex_unlock(&local->mtx);
2779 
2780 		/* work will clean up etc */
2781 		flush_delayed_work(&found->work);
2782 		WARN_ON(!found->to_be_freed);
2783 		kfree(found);
2784 	}
2785 
2786 	return 0;
2787 }
2788 
2789 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2790 					      struct wireless_dev *wdev,
2791 					      u64 cookie)
2792 {
2793 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2794 	struct ieee80211_local *local = sdata->local;
2795 
2796 	return ieee80211_cancel_roc(local, cookie, false);
2797 }
2798 
2799 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2800 					   struct net_device *dev,
2801 					   struct cfg80211_chan_def *chandef,
2802 					   u32 cac_time_ms)
2803 {
2804 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2805 	struct ieee80211_local *local = sdata->local;
2806 	int err;
2807 
2808 	mutex_lock(&local->mtx);
2809 	if (!list_empty(&local->roc_list) || local->scanning) {
2810 		err = -EBUSY;
2811 		goto out_unlock;
2812 	}
2813 
2814 	/* whatever, but channel contexts should not complain about that one */
2815 	sdata->smps_mode = IEEE80211_SMPS_OFF;
2816 	sdata->needed_rx_chains = local->rx_chains;
2817 
2818 	err = ieee80211_vif_use_channel(sdata, chandef,
2819 					IEEE80211_CHANCTX_SHARED);
2820 	if (err)
2821 		goto out_unlock;
2822 
2823 	ieee80211_queue_delayed_work(&sdata->local->hw,
2824 				     &sdata->dfs_cac_timer_work,
2825 				     msecs_to_jiffies(cac_time_ms));
2826 
2827  out_unlock:
2828 	mutex_unlock(&local->mtx);
2829 	return err;
2830 }
2831 
2832 static struct cfg80211_beacon_data *
2833 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2834 {
2835 	struct cfg80211_beacon_data *new_beacon;
2836 	u8 *pos;
2837 	int len;
2838 
2839 	len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2840 	      beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2841 	      beacon->probe_resp_len;
2842 
2843 	new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2844 	if (!new_beacon)
2845 		return NULL;
2846 
2847 	pos = (u8 *)(new_beacon + 1);
2848 	if (beacon->head_len) {
2849 		new_beacon->head_len = beacon->head_len;
2850 		new_beacon->head = pos;
2851 		memcpy(pos, beacon->head, beacon->head_len);
2852 		pos += beacon->head_len;
2853 	}
2854 	if (beacon->tail_len) {
2855 		new_beacon->tail_len = beacon->tail_len;
2856 		new_beacon->tail = pos;
2857 		memcpy(pos, beacon->tail, beacon->tail_len);
2858 		pos += beacon->tail_len;
2859 	}
2860 	if (beacon->beacon_ies_len) {
2861 		new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2862 		new_beacon->beacon_ies = pos;
2863 		memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2864 		pos += beacon->beacon_ies_len;
2865 	}
2866 	if (beacon->proberesp_ies_len) {
2867 		new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2868 		new_beacon->proberesp_ies = pos;
2869 		memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2870 		pos += beacon->proberesp_ies_len;
2871 	}
2872 	if (beacon->assocresp_ies_len) {
2873 		new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2874 		new_beacon->assocresp_ies = pos;
2875 		memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2876 		pos += beacon->assocresp_ies_len;
2877 	}
2878 	if (beacon->probe_resp_len) {
2879 		new_beacon->probe_resp_len = beacon->probe_resp_len;
2880 		beacon->probe_resp = pos;
2881 		memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2882 		pos += beacon->probe_resp_len;
2883 	}
2884 
2885 	return new_beacon;
2886 }
2887 
2888 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2889 {
2890 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2891 
2892 	ieee80211_queue_work(&sdata->local->hw,
2893 			     &sdata->csa_finalize_work);
2894 }
2895 EXPORT_SYMBOL(ieee80211_csa_finish);
2896 
2897 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2898 					  u32 *changed)
2899 {
2900 	int err;
2901 
2902 	switch (sdata->vif.type) {
2903 	case NL80211_IFTYPE_AP:
2904 		err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2905 					      NULL);
2906 		kfree(sdata->u.ap.next_beacon);
2907 		sdata->u.ap.next_beacon = NULL;
2908 
2909 		if (err < 0)
2910 			return err;
2911 		*changed |= err;
2912 		break;
2913 	case NL80211_IFTYPE_ADHOC:
2914 		err = ieee80211_ibss_finish_csa(sdata);
2915 		if (err < 0)
2916 			return err;
2917 		*changed |= err;
2918 		break;
2919 #ifdef CONFIG_MAC80211_MESH
2920 	case NL80211_IFTYPE_MESH_POINT:
2921 		err = ieee80211_mesh_finish_csa(sdata);
2922 		if (err < 0)
2923 			return err;
2924 		*changed |= err;
2925 		break;
2926 #endif
2927 	default:
2928 		WARN_ON(1);
2929 		return -EINVAL;
2930 	}
2931 
2932 	return 0;
2933 }
2934 
2935 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2936 {
2937 	struct ieee80211_local *local = sdata->local;
2938 	u32 changed = 0;
2939 	int err;
2940 
2941 	sdata_assert_lock(sdata);
2942 	lockdep_assert_held(&local->mtx);
2943 	lockdep_assert_held(&local->chanctx_mtx);
2944 
2945 	/*
2946 	 * using reservation isn't immediate as it may be deferred until later
2947 	 * with multi-vif. once reservation is complete it will re-schedule the
2948 	 * work with no reserved_chanctx so verify chandef to check if it
2949 	 * completed successfully
2950 	 */
2951 
2952 	if (sdata->reserved_chanctx) {
2953 		/*
2954 		 * with multi-vif csa driver may call ieee80211_csa_finish()
2955 		 * many times while waiting for other interfaces to use their
2956 		 * reservations
2957 		 */
2958 		if (sdata->reserved_ready)
2959 			return 0;
2960 
2961 		return ieee80211_vif_use_reserved_context(sdata);
2962 	}
2963 
2964 	if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2965 					&sdata->csa_chandef))
2966 		return -EINVAL;
2967 
2968 	sdata->vif.csa_active = false;
2969 
2970 	err = ieee80211_set_after_csa_beacon(sdata, &changed);
2971 	if (err)
2972 		return err;
2973 
2974 	ieee80211_bss_info_change_notify(sdata, changed);
2975 
2976 	if (sdata->csa_block_tx) {
2977 		ieee80211_wake_vif_queues(local, sdata,
2978 					  IEEE80211_QUEUE_STOP_REASON_CSA);
2979 		sdata->csa_block_tx = false;
2980 	}
2981 
2982 	err = drv_post_channel_switch(sdata);
2983 	if (err)
2984 		return err;
2985 
2986 	cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2987 
2988 	return 0;
2989 }
2990 
2991 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2992 {
2993 	if (__ieee80211_csa_finalize(sdata)) {
2994 		sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2995 		cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2996 				    GFP_KERNEL);
2997 	}
2998 }
2999 
3000 void ieee80211_csa_finalize_work(struct work_struct *work)
3001 {
3002 	struct ieee80211_sub_if_data *sdata =
3003 		container_of(work, struct ieee80211_sub_if_data,
3004 			     csa_finalize_work);
3005 	struct ieee80211_local *local = sdata->local;
3006 
3007 	sdata_lock(sdata);
3008 	mutex_lock(&local->mtx);
3009 	mutex_lock(&local->chanctx_mtx);
3010 
3011 	/* AP might have been stopped while waiting for the lock. */
3012 	if (!sdata->vif.csa_active)
3013 		goto unlock;
3014 
3015 	if (!ieee80211_sdata_running(sdata))
3016 		goto unlock;
3017 
3018 	ieee80211_csa_finalize(sdata);
3019 
3020 unlock:
3021 	mutex_unlock(&local->chanctx_mtx);
3022 	mutex_unlock(&local->mtx);
3023 	sdata_unlock(sdata);
3024 }
3025 
3026 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3027 				    struct cfg80211_csa_settings *params,
3028 				    u32 *changed)
3029 {
3030 	struct ieee80211_csa_settings csa = {};
3031 	int err;
3032 
3033 	switch (sdata->vif.type) {
3034 	case NL80211_IFTYPE_AP:
3035 		sdata->u.ap.next_beacon =
3036 			cfg80211_beacon_dup(&params->beacon_after);
3037 		if (!sdata->u.ap.next_beacon)
3038 			return -ENOMEM;
3039 
3040 		/*
3041 		 * With a count of 0, we don't have to wait for any
3042 		 * TBTT before switching, so complete the CSA
3043 		 * immediately.  In theory, with a count == 1 we
3044 		 * should delay the switch until just before the next
3045 		 * TBTT, but that would complicate things so we switch
3046 		 * immediately too.  If we would delay the switch
3047 		 * until the next TBTT, we would have to set the probe
3048 		 * response here.
3049 		 *
3050 		 * TODO: A channel switch with count <= 1 without
3051 		 * sending a CSA action frame is kind of useless,
3052 		 * because the clients won't know we're changing
3053 		 * channels.  The action frame must be implemented
3054 		 * either here or in the userspace.
3055 		 */
3056 		if (params->count <= 1)
3057 			break;
3058 
3059 		if ((params->n_counter_offsets_beacon >
3060 		     IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3061 		    (params->n_counter_offsets_presp >
3062 		     IEEE80211_MAX_CSA_COUNTERS_NUM))
3063 			return -EINVAL;
3064 
3065 		csa.counter_offsets_beacon = params->counter_offsets_beacon;
3066 		csa.counter_offsets_presp = params->counter_offsets_presp;
3067 		csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3068 		csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3069 		csa.count = params->count;
3070 
3071 		err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3072 		if (err < 0) {
3073 			kfree(sdata->u.ap.next_beacon);
3074 			return err;
3075 		}
3076 		*changed |= err;
3077 
3078 		break;
3079 	case NL80211_IFTYPE_ADHOC:
3080 		if (!sdata->vif.bss_conf.ibss_joined)
3081 			return -EINVAL;
3082 
3083 		if (params->chandef.width != sdata->u.ibss.chandef.width)
3084 			return -EINVAL;
3085 
3086 		switch (params->chandef.width) {
3087 		case NL80211_CHAN_WIDTH_40:
3088 			if (cfg80211_get_chandef_type(&params->chandef) !=
3089 			    cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3090 				return -EINVAL;
3091 		case NL80211_CHAN_WIDTH_5:
3092 		case NL80211_CHAN_WIDTH_10:
3093 		case NL80211_CHAN_WIDTH_20_NOHT:
3094 		case NL80211_CHAN_WIDTH_20:
3095 			break;
3096 		default:
3097 			return -EINVAL;
3098 		}
3099 
3100 		/* changes into another band are not supported */
3101 		if (sdata->u.ibss.chandef.chan->band !=
3102 		    params->chandef.chan->band)
3103 			return -EINVAL;
3104 
3105 		/* see comments in the NL80211_IFTYPE_AP block */
3106 		if (params->count > 1) {
3107 			err = ieee80211_ibss_csa_beacon(sdata, params);
3108 			if (err < 0)
3109 				return err;
3110 			*changed |= err;
3111 		}
3112 
3113 		ieee80211_send_action_csa(sdata, params);
3114 
3115 		break;
3116 #ifdef CONFIG_MAC80211_MESH
3117 	case NL80211_IFTYPE_MESH_POINT: {
3118 		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3119 
3120 		if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3121 			return -EINVAL;
3122 
3123 		/* changes into another band are not supported */
3124 		if (sdata->vif.bss_conf.chandef.chan->band !=
3125 		    params->chandef.chan->band)
3126 			return -EINVAL;
3127 
3128 		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3129 			ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3130 			if (!ifmsh->pre_value)
3131 				ifmsh->pre_value = 1;
3132 			else
3133 				ifmsh->pre_value++;
3134 		}
3135 
3136 		/* see comments in the NL80211_IFTYPE_AP block */
3137 		if (params->count > 1) {
3138 			err = ieee80211_mesh_csa_beacon(sdata, params);
3139 			if (err < 0) {
3140 				ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3141 				return err;
3142 			}
3143 			*changed |= err;
3144 		}
3145 
3146 		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3147 			ieee80211_send_action_csa(sdata, params);
3148 
3149 		break;
3150 		}
3151 #endif
3152 	default:
3153 		return -EOPNOTSUPP;
3154 	}
3155 
3156 	return 0;
3157 }
3158 
3159 static int
3160 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3161 			   struct cfg80211_csa_settings *params)
3162 {
3163 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3164 	struct ieee80211_local *local = sdata->local;
3165 	struct ieee80211_channel_switch ch_switch;
3166 	struct ieee80211_chanctx_conf *conf;
3167 	struct ieee80211_chanctx *chanctx;
3168 	u32 changed = 0;
3169 	int err;
3170 
3171 	sdata_assert_lock(sdata);
3172 	lockdep_assert_held(&local->mtx);
3173 
3174 	if (!list_empty(&local->roc_list) || local->scanning)
3175 		return -EBUSY;
3176 
3177 	if (sdata->wdev.cac_started)
3178 		return -EBUSY;
3179 
3180 	if (cfg80211_chandef_identical(&params->chandef,
3181 				       &sdata->vif.bss_conf.chandef))
3182 		return -EINVAL;
3183 
3184 	/* don't allow another channel switch if one is already active. */
3185 	if (sdata->vif.csa_active)
3186 		return -EBUSY;
3187 
3188 	mutex_lock(&local->chanctx_mtx);
3189 	conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3190 					 lockdep_is_held(&local->chanctx_mtx));
3191 	if (!conf) {
3192 		err = -EBUSY;
3193 		goto out;
3194 	}
3195 
3196 	chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3197 	if (!chanctx) {
3198 		err = -EBUSY;
3199 		goto out;
3200 	}
3201 
3202 	ch_switch.timestamp = 0;
3203 	ch_switch.device_timestamp = 0;
3204 	ch_switch.block_tx = params->block_tx;
3205 	ch_switch.chandef = params->chandef;
3206 	ch_switch.count = params->count;
3207 
3208 	err = drv_pre_channel_switch(sdata, &ch_switch);
3209 	if (err)
3210 		goto out;
3211 
3212 	err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3213 					    chanctx->mode,
3214 					    params->radar_required);
3215 	if (err)
3216 		goto out;
3217 
3218 	/* if reservation is invalid then this will fail */
3219 	err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3220 	if (err) {
3221 		ieee80211_vif_unreserve_chanctx(sdata);
3222 		goto out;
3223 	}
3224 
3225 	err = ieee80211_set_csa_beacon(sdata, params, &changed);
3226 	if (err) {
3227 		ieee80211_vif_unreserve_chanctx(sdata);
3228 		goto out;
3229 	}
3230 
3231 	sdata->csa_chandef = params->chandef;
3232 	sdata->csa_block_tx = params->block_tx;
3233 	sdata->vif.csa_active = true;
3234 
3235 	if (sdata->csa_block_tx)
3236 		ieee80211_stop_vif_queues(local, sdata,
3237 					  IEEE80211_QUEUE_STOP_REASON_CSA);
3238 
3239 	cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3240 					  params->count);
3241 
3242 	if (changed) {
3243 		ieee80211_bss_info_change_notify(sdata, changed);
3244 		drv_channel_switch_beacon(sdata, &params->chandef);
3245 	} else {
3246 		/* if the beacon didn't change, we can finalize immediately */
3247 		ieee80211_csa_finalize(sdata);
3248 	}
3249 
3250 out:
3251 	mutex_unlock(&local->chanctx_mtx);
3252 	return err;
3253 }
3254 
3255 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3256 			     struct cfg80211_csa_settings *params)
3257 {
3258 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3259 	struct ieee80211_local *local = sdata->local;
3260 	int err;
3261 
3262 	mutex_lock(&local->mtx);
3263 	err = __ieee80211_channel_switch(wiphy, dev, params);
3264 	mutex_unlock(&local->mtx);
3265 
3266 	return err;
3267 }
3268 
3269 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3270 					      struct sk_buff *skb, u64 *cookie,
3271 					      gfp_t gfp)
3272 {
3273 	unsigned long spin_flags;
3274 	struct sk_buff *ack_skb;
3275 	int id;
3276 
3277 	ack_skb = skb_copy(skb, gfp);
3278 	if (!ack_skb)
3279 		return ERR_PTR(-ENOMEM);
3280 
3281 	spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3282 	id = idr_alloc(&local->ack_status_frames, ack_skb,
3283 		       1, 0x10000, GFP_ATOMIC);
3284 	spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3285 
3286 	if (id < 0) {
3287 		kfree_skb(ack_skb);
3288 		return ERR_PTR(-ENOMEM);
3289 	}
3290 
3291 	IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3292 
3293 	*cookie = ieee80211_mgmt_tx_cookie(local);
3294 	IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3295 
3296 	return ack_skb;
3297 }
3298 
3299 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3300 			     struct cfg80211_mgmt_tx_params *params,
3301 			     u64 *cookie)
3302 {
3303 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3304 	struct ieee80211_local *local = sdata->local;
3305 	struct sk_buff *skb, *ack_skb;
3306 	struct sta_info *sta;
3307 	const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3308 	bool need_offchan = false;
3309 	u32 flags;
3310 	int ret;
3311 	u8 *data;
3312 
3313 	if (params->dont_wait_for_ack)
3314 		flags = IEEE80211_TX_CTL_NO_ACK;
3315 	else
3316 		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3317 			IEEE80211_TX_CTL_REQ_TX_STATUS;
3318 
3319 	if (params->no_cck)
3320 		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3321 
3322 	switch (sdata->vif.type) {
3323 	case NL80211_IFTYPE_ADHOC:
3324 		if (!sdata->vif.bss_conf.ibss_joined)
3325 			need_offchan = true;
3326 		/* fall through */
3327 #ifdef CONFIG_MAC80211_MESH
3328 	case NL80211_IFTYPE_MESH_POINT:
3329 		if (ieee80211_vif_is_mesh(&sdata->vif) &&
3330 		    !sdata->u.mesh.mesh_id_len)
3331 			need_offchan = true;
3332 		/* fall through */
3333 #endif
3334 	case NL80211_IFTYPE_AP:
3335 	case NL80211_IFTYPE_AP_VLAN:
3336 	case NL80211_IFTYPE_P2P_GO:
3337 		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3338 		    !ieee80211_vif_is_mesh(&sdata->vif) &&
3339 		    !rcu_access_pointer(sdata->bss->beacon))
3340 			need_offchan = true;
3341 		if (!ieee80211_is_action(mgmt->frame_control) ||
3342 		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3343 		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3344 		    mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3345 			break;
3346 		rcu_read_lock();
3347 		sta = sta_info_get(sdata, mgmt->da);
3348 		rcu_read_unlock();
3349 		if (!sta)
3350 			return -ENOLINK;
3351 		break;
3352 	case NL80211_IFTYPE_STATION:
3353 	case NL80211_IFTYPE_P2P_CLIENT:
3354 		sdata_lock(sdata);
3355 		if (!sdata->u.mgd.associated ||
3356 		    (params->offchan && params->wait &&
3357 		     local->ops->remain_on_channel &&
3358 		     memcmp(sdata->u.mgd.associated->bssid,
3359 			    mgmt->bssid, ETH_ALEN)))
3360 			need_offchan = true;
3361 		sdata_unlock(sdata);
3362 		break;
3363 	case NL80211_IFTYPE_P2P_DEVICE:
3364 		need_offchan = true;
3365 		break;
3366 	default:
3367 		return -EOPNOTSUPP;
3368 	}
3369 
3370 	/* configurations requiring offchan cannot work if no channel has been
3371 	 * specified
3372 	 */
3373 	if (need_offchan && !params->chan)
3374 		return -EINVAL;
3375 
3376 	mutex_lock(&local->mtx);
3377 
3378 	/* Check if the operating channel is the requested channel */
3379 	if (!need_offchan) {
3380 		struct ieee80211_chanctx_conf *chanctx_conf;
3381 
3382 		rcu_read_lock();
3383 		chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3384 
3385 		if (chanctx_conf) {
3386 			need_offchan = params->chan &&
3387 				       (params->chan !=
3388 					chanctx_conf->def.chan);
3389 		} else if (!params->chan) {
3390 			ret = -EINVAL;
3391 			rcu_read_unlock();
3392 			goto out_unlock;
3393 		} else {
3394 			need_offchan = true;
3395 		}
3396 		rcu_read_unlock();
3397 	}
3398 
3399 	if (need_offchan && !params->offchan) {
3400 		ret = -EBUSY;
3401 		goto out_unlock;
3402 	}
3403 
3404 	skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3405 	if (!skb) {
3406 		ret = -ENOMEM;
3407 		goto out_unlock;
3408 	}
3409 	skb_reserve(skb, local->hw.extra_tx_headroom);
3410 
3411 	data = skb_put(skb, params->len);
3412 	memcpy(data, params->buf, params->len);
3413 
3414 	/* Update CSA counters */
3415 	if (sdata->vif.csa_active &&
3416 	    (sdata->vif.type == NL80211_IFTYPE_AP ||
3417 	     sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3418 	     sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3419 	    params->n_csa_offsets) {
3420 		int i;
3421 		struct beacon_data *beacon = NULL;
3422 
3423 		rcu_read_lock();
3424 
3425 		if (sdata->vif.type == NL80211_IFTYPE_AP)
3426 			beacon = rcu_dereference(sdata->u.ap.beacon);
3427 		else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3428 			beacon = rcu_dereference(sdata->u.ibss.presp);
3429 		else if (ieee80211_vif_is_mesh(&sdata->vif))
3430 			beacon = rcu_dereference(sdata->u.mesh.beacon);
3431 
3432 		if (beacon)
3433 			for (i = 0; i < params->n_csa_offsets; i++)
3434 				data[params->csa_offsets[i]] =
3435 					beacon->csa_current_counter;
3436 
3437 		rcu_read_unlock();
3438 	}
3439 
3440 	IEEE80211_SKB_CB(skb)->flags = flags;
3441 
3442 	skb->dev = sdata->dev;
3443 
3444 	if (!params->dont_wait_for_ack) {
3445 		/* make a copy to preserve the frame contents
3446 		 * in case of encryption.
3447 		 */
3448 		ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3449 						 GFP_KERNEL);
3450 		if (IS_ERR(ack_skb)) {
3451 			ret = PTR_ERR(ack_skb);
3452 			kfree_skb(skb);
3453 			goto out_unlock;
3454 		}
3455 	} else {
3456 		/* Assign a dummy non-zero cookie, it's not sent to
3457 		 * userspace in this case but we rely on its value
3458 		 * internally in the need_offchan case to distinguish
3459 		 * mgmt-tx from remain-on-channel.
3460 		 */
3461 		*cookie = 0xffffffff;
3462 	}
3463 
3464 	if (!need_offchan) {
3465 		ieee80211_tx_skb(sdata, skb);
3466 		ret = 0;
3467 		goto out_unlock;
3468 	}
3469 
3470 	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3471 					IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3472 	if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3473 		IEEE80211_SKB_CB(skb)->hw_queue =
3474 			local->hw.offchannel_tx_hw_queue;
3475 
3476 	/* This will handle all kinds of coalescing and immediate TX */
3477 	ret = ieee80211_start_roc_work(local, sdata, params->chan,
3478 				       params->wait, cookie, skb,
3479 				       IEEE80211_ROC_TYPE_MGMT_TX);
3480 	if (ret)
3481 		kfree_skb(skb);
3482  out_unlock:
3483 	mutex_unlock(&local->mtx);
3484 	return ret;
3485 }
3486 
3487 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3488 					 struct wireless_dev *wdev,
3489 					 u64 cookie)
3490 {
3491 	struct ieee80211_local *local = wiphy_priv(wiphy);
3492 
3493 	return ieee80211_cancel_roc(local, cookie, true);
3494 }
3495 
3496 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3497 					  struct wireless_dev *wdev,
3498 					  u16 frame_type, bool reg)
3499 {
3500 	struct ieee80211_local *local = wiphy_priv(wiphy);
3501 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3502 
3503 	switch (frame_type) {
3504 	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3505 		if (reg) {
3506 			local->probe_req_reg++;
3507 			sdata->vif.probe_req_reg++;
3508 		} else {
3509 			if (local->probe_req_reg)
3510 				local->probe_req_reg--;
3511 
3512 			if (sdata->vif.probe_req_reg)
3513 				sdata->vif.probe_req_reg--;
3514 		}
3515 
3516 		if (!local->open_count)
3517 			break;
3518 
3519 		if (sdata->vif.probe_req_reg == 1)
3520 			drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3521 						FIF_PROBE_REQ);
3522 		else if (sdata->vif.probe_req_reg == 0)
3523 			drv_config_iface_filter(local, sdata, 0,
3524 						FIF_PROBE_REQ);
3525 
3526 		ieee80211_configure_filter(local);
3527 		break;
3528 	default:
3529 		break;
3530 	}
3531 }
3532 
3533 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3534 {
3535 	struct ieee80211_local *local = wiphy_priv(wiphy);
3536 
3537 	if (local->started)
3538 		return -EOPNOTSUPP;
3539 
3540 	return drv_set_antenna(local, tx_ant, rx_ant);
3541 }
3542 
3543 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3544 {
3545 	struct ieee80211_local *local = wiphy_priv(wiphy);
3546 
3547 	return drv_get_antenna(local, tx_ant, rx_ant);
3548 }
3549 
3550 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3551 				    struct net_device *dev,
3552 				    struct cfg80211_gtk_rekey_data *data)
3553 {
3554 	struct ieee80211_local *local = wiphy_priv(wiphy);
3555 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3556 
3557 	if (!local->ops->set_rekey_data)
3558 		return -EOPNOTSUPP;
3559 
3560 	drv_set_rekey_data(local, sdata, data);
3561 
3562 	return 0;
3563 }
3564 
3565 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3566 				  const u8 *peer, u64 *cookie)
3567 {
3568 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3569 	struct ieee80211_local *local = sdata->local;
3570 	struct ieee80211_qos_hdr *nullfunc;
3571 	struct sk_buff *skb, *ack_skb;
3572 	int size = sizeof(*nullfunc);
3573 	__le16 fc;
3574 	bool qos;
3575 	struct ieee80211_tx_info *info;
3576 	struct sta_info *sta;
3577 	struct ieee80211_chanctx_conf *chanctx_conf;
3578 	enum ieee80211_band band;
3579 	int ret;
3580 
3581 	/* the lock is needed to assign the cookie later */
3582 	mutex_lock(&local->mtx);
3583 
3584 	rcu_read_lock();
3585 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3586 	if (WARN_ON(!chanctx_conf)) {
3587 		ret = -EINVAL;
3588 		goto unlock;
3589 	}
3590 	band = chanctx_conf->def.chan->band;
3591 	sta = sta_info_get_bss(sdata, peer);
3592 	if (sta) {
3593 		qos = sta->sta.wme;
3594 	} else {
3595 		ret = -ENOLINK;
3596 		goto unlock;
3597 	}
3598 
3599 	if (qos) {
3600 		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3601 				 IEEE80211_STYPE_QOS_NULLFUNC |
3602 				 IEEE80211_FCTL_FROMDS);
3603 	} else {
3604 		size -= 2;
3605 		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3606 				 IEEE80211_STYPE_NULLFUNC |
3607 				 IEEE80211_FCTL_FROMDS);
3608 	}
3609 
3610 	skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3611 	if (!skb) {
3612 		ret = -ENOMEM;
3613 		goto unlock;
3614 	}
3615 
3616 	skb->dev = dev;
3617 
3618 	skb_reserve(skb, local->hw.extra_tx_headroom);
3619 
3620 	nullfunc = (void *) skb_put(skb, size);
3621 	nullfunc->frame_control = fc;
3622 	nullfunc->duration_id = 0;
3623 	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3624 	memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3625 	memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3626 	nullfunc->seq_ctrl = 0;
3627 
3628 	info = IEEE80211_SKB_CB(skb);
3629 
3630 	info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3631 		       IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3632 	info->band = band;
3633 
3634 	skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3635 	skb->priority = 7;
3636 	if (qos)
3637 		nullfunc->qos_ctrl = cpu_to_le16(7);
3638 
3639 	ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3640 	if (IS_ERR(ack_skb)) {
3641 		kfree_skb(skb);
3642 		ret = PTR_ERR(ack_skb);
3643 		goto unlock;
3644 	}
3645 
3646 	local_bh_disable();
3647 	ieee80211_xmit(sdata, sta, skb);
3648 	local_bh_enable();
3649 
3650 	ret = 0;
3651 unlock:
3652 	rcu_read_unlock();
3653 	mutex_unlock(&local->mtx);
3654 
3655 	return ret;
3656 }
3657 
3658 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3659 				     struct wireless_dev *wdev,
3660 				     struct cfg80211_chan_def *chandef)
3661 {
3662 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3663 	struct ieee80211_local *local = wiphy_priv(wiphy);
3664 	struct ieee80211_chanctx_conf *chanctx_conf;
3665 	int ret = -ENODATA;
3666 
3667 	rcu_read_lock();
3668 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3669 	if (chanctx_conf) {
3670 		*chandef = sdata->vif.bss_conf.chandef;
3671 		ret = 0;
3672 	} else if (local->open_count > 0 &&
3673 		   local->open_count == local->monitors &&
3674 		   sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3675 		if (local->use_chanctx)
3676 			*chandef = local->monitor_chandef;
3677 		else
3678 			*chandef = local->_oper_chandef;
3679 		ret = 0;
3680 	}
3681 	rcu_read_unlock();
3682 
3683 	return ret;
3684 }
3685 
3686 #ifdef CONFIG_PM
3687 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3688 {
3689 	drv_set_wakeup(wiphy_priv(wiphy), enabled);
3690 }
3691 #endif
3692 
3693 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3694 				 struct net_device *dev,
3695 				 struct cfg80211_qos_map *qos_map)
3696 {
3697 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3698 	struct mac80211_qos_map *new_qos_map, *old_qos_map;
3699 
3700 	if (qos_map) {
3701 		new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3702 		if (!new_qos_map)
3703 			return -ENOMEM;
3704 		memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3705 	} else {
3706 		/* A NULL qos_map was passed to disable QoS mapping */
3707 		new_qos_map = NULL;
3708 	}
3709 
3710 	old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3711 	rcu_assign_pointer(sdata->qos_map, new_qos_map);
3712 	if (old_qos_map)
3713 		kfree_rcu(old_qos_map, rcu_head);
3714 
3715 	return 0;
3716 }
3717 
3718 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3719 				      struct net_device *dev,
3720 				      struct cfg80211_chan_def *chandef)
3721 {
3722 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3723 	int ret;
3724 	u32 changed = 0;
3725 
3726 	ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3727 	if (ret == 0)
3728 		ieee80211_bss_info_change_notify(sdata, changed);
3729 
3730 	return ret;
3731 }
3732 
3733 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3734 			       u8 tsid, const u8 *peer, u8 up,
3735 			       u16 admitted_time)
3736 {
3737 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3738 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3739 	int ac = ieee802_1d_to_ac[up];
3740 
3741 	if (sdata->vif.type != NL80211_IFTYPE_STATION)
3742 		return -EOPNOTSUPP;
3743 
3744 	if (!(sdata->wmm_acm & BIT(up)))
3745 		return -EINVAL;
3746 
3747 	if (ifmgd->tx_tspec[ac].admitted_time)
3748 		return -EBUSY;
3749 
3750 	if (admitted_time) {
3751 		ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3752 		ifmgd->tx_tspec[ac].tsid = tsid;
3753 		ifmgd->tx_tspec[ac].up = up;
3754 	}
3755 
3756 	return 0;
3757 }
3758 
3759 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3760 			       u8 tsid, const u8 *peer)
3761 {
3762 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3763 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3764 	struct ieee80211_local *local = wiphy_priv(wiphy);
3765 	int ac;
3766 
3767 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3768 		struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3769 
3770 		/* skip unused entries */
3771 		if (!tx_tspec->admitted_time)
3772 			continue;
3773 
3774 		if (tx_tspec->tsid != tsid)
3775 			continue;
3776 
3777 		/* due to this new packets will be reassigned to non-ACM ACs */
3778 		tx_tspec->up = -1;
3779 
3780 		/* Make sure that all packets have been sent to avoid to
3781 		 * restore the QoS params on packets that are still on the
3782 		 * queues.
3783 		 */
3784 		synchronize_net();
3785 		ieee80211_flush_queues(local, sdata, false);
3786 
3787 		/* restore the normal QoS parameters
3788 		 * (unconditionally to avoid races)
3789 		 */
3790 		tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3791 		tx_tspec->downgraded = false;
3792 		ieee80211_sta_handle_tspec_ac_params(sdata);
3793 
3794 		/* finally clear all the data */
3795 		memset(tx_tspec, 0, sizeof(*tx_tspec));
3796 
3797 		return 0;
3798 	}
3799 
3800 	return -ENOENT;
3801 }
3802 
3803 const struct cfg80211_ops mac80211_config_ops = {
3804 	.add_virtual_intf = ieee80211_add_iface,
3805 	.del_virtual_intf = ieee80211_del_iface,
3806 	.change_virtual_intf = ieee80211_change_iface,
3807 	.start_p2p_device = ieee80211_start_p2p_device,
3808 	.stop_p2p_device = ieee80211_stop_p2p_device,
3809 	.add_key = ieee80211_add_key,
3810 	.del_key = ieee80211_del_key,
3811 	.get_key = ieee80211_get_key,
3812 	.set_default_key = ieee80211_config_default_key,
3813 	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3814 	.start_ap = ieee80211_start_ap,
3815 	.change_beacon = ieee80211_change_beacon,
3816 	.stop_ap = ieee80211_stop_ap,
3817 	.add_station = ieee80211_add_station,
3818 	.del_station = ieee80211_del_station,
3819 	.change_station = ieee80211_change_station,
3820 	.get_station = ieee80211_get_station,
3821 	.dump_station = ieee80211_dump_station,
3822 	.dump_survey = ieee80211_dump_survey,
3823 #ifdef CONFIG_MAC80211_MESH
3824 	.add_mpath = ieee80211_add_mpath,
3825 	.del_mpath = ieee80211_del_mpath,
3826 	.change_mpath = ieee80211_change_mpath,
3827 	.get_mpath = ieee80211_get_mpath,
3828 	.dump_mpath = ieee80211_dump_mpath,
3829 	.get_mpp = ieee80211_get_mpp,
3830 	.dump_mpp = ieee80211_dump_mpp,
3831 	.update_mesh_config = ieee80211_update_mesh_config,
3832 	.get_mesh_config = ieee80211_get_mesh_config,
3833 	.join_mesh = ieee80211_join_mesh,
3834 	.leave_mesh = ieee80211_leave_mesh,
3835 #endif
3836 	.join_ocb = ieee80211_join_ocb,
3837 	.leave_ocb = ieee80211_leave_ocb,
3838 	.change_bss = ieee80211_change_bss,
3839 	.set_txq_params = ieee80211_set_txq_params,
3840 	.set_monitor_channel = ieee80211_set_monitor_channel,
3841 	.suspend = ieee80211_suspend,
3842 	.resume = ieee80211_resume,
3843 	.scan = ieee80211_scan,
3844 	.sched_scan_start = ieee80211_sched_scan_start,
3845 	.sched_scan_stop = ieee80211_sched_scan_stop,
3846 	.auth = ieee80211_auth,
3847 	.assoc = ieee80211_assoc,
3848 	.deauth = ieee80211_deauth,
3849 	.disassoc = ieee80211_disassoc,
3850 	.join_ibss = ieee80211_join_ibss,
3851 	.leave_ibss = ieee80211_leave_ibss,
3852 	.set_mcast_rate = ieee80211_set_mcast_rate,
3853 	.set_wiphy_params = ieee80211_set_wiphy_params,
3854 	.set_tx_power = ieee80211_set_tx_power,
3855 	.get_tx_power = ieee80211_get_tx_power,
3856 	.set_wds_peer = ieee80211_set_wds_peer,
3857 	.rfkill_poll = ieee80211_rfkill_poll,
3858 	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3859 	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3860 	.set_power_mgmt = ieee80211_set_power_mgmt,
3861 	.set_bitrate_mask = ieee80211_set_bitrate_mask,
3862 	.remain_on_channel = ieee80211_remain_on_channel,
3863 	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3864 	.mgmt_tx = ieee80211_mgmt_tx,
3865 	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3866 	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3867 	.mgmt_frame_register = ieee80211_mgmt_frame_register,
3868 	.set_antenna = ieee80211_set_antenna,
3869 	.get_antenna = ieee80211_get_antenna,
3870 	.set_rekey_data = ieee80211_set_rekey_data,
3871 	.tdls_oper = ieee80211_tdls_oper,
3872 	.tdls_mgmt = ieee80211_tdls_mgmt,
3873 	.tdls_channel_switch = ieee80211_tdls_channel_switch,
3874 	.tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3875 	.probe_client = ieee80211_probe_client,
3876 	.set_noack_map = ieee80211_set_noack_map,
3877 #ifdef CONFIG_PM
3878 	.set_wakeup = ieee80211_set_wakeup,
3879 #endif
3880 	.get_channel = ieee80211_cfg_get_channel,
3881 	.start_radar_detection = ieee80211_start_radar_detection,
3882 	.channel_switch = ieee80211_channel_switch,
3883 	.set_qos_map = ieee80211_set_qos_map,
3884 	.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3885 	.add_tx_ts = ieee80211_add_tx_ts,
3886 	.del_tx_ts = ieee80211_del_tx_ts,
3887 };
3888