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[mirror_ubuntu-artful-kernel.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 *
7 * This file is GPLv2 as found in COPYING.
8 */
9
10 #include <linux/ieee80211.h>
11 #include <linux/nl80211.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/slab.h>
14 #include <net/net_namespace.h>
15 #include <linux/rcupdate.h>
16 #include <linux/if_ether.h>
17 #include <net/cfg80211.h>
18 #include "ieee80211_i.h"
19 #include "driver-ops.h"
20 #include "cfg.h"
21 #include "rate.h"
22 #include "mesh.h"
23 #include "wme.h"
24
25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
26 const char *name,
27 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, &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 return 0;
140 }
141
142 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
143 u8 key_idx, bool pairwise, const u8 *mac_addr,
144 struct key_params *params)
145 {
146 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
147 struct ieee80211_local *local = sdata->local;
148 struct sta_info *sta = NULL;
149 const struct ieee80211_cipher_scheme *cs = NULL;
150 struct ieee80211_key *key;
151 int err;
152
153 if (!ieee80211_sdata_running(sdata))
154 return -ENETDOWN;
155
156 /* reject WEP and TKIP keys if WEP failed to initialize */
157 switch (params->cipher) {
158 case WLAN_CIPHER_SUITE_WEP40:
159 case WLAN_CIPHER_SUITE_TKIP:
160 case WLAN_CIPHER_SUITE_WEP104:
161 if (IS_ERR(local->wep_tx_tfm))
162 return -EINVAL;
163 break;
164 case WLAN_CIPHER_SUITE_CCMP:
165 case WLAN_CIPHER_SUITE_CCMP_256:
166 case WLAN_CIPHER_SUITE_AES_CMAC:
167 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
168 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
169 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
170 case WLAN_CIPHER_SUITE_GCMP:
171 case WLAN_CIPHER_SUITE_GCMP_256:
172 break;
173 default:
174 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
175 break;
176 }
177
178 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
179 params->key, params->seq_len, params->seq,
180 cs);
181 if (IS_ERR(key))
182 return PTR_ERR(key);
183
184 if (pairwise)
185 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
186
187 mutex_lock(&local->sta_mtx);
188
189 if (mac_addr) {
190 if (ieee80211_vif_is_mesh(&sdata->vif))
191 sta = sta_info_get(sdata, mac_addr);
192 else
193 sta = sta_info_get_bss(sdata, mac_addr);
194 /*
195 * The ASSOC test makes sure the driver is ready to
196 * receive the key. When wpa_supplicant has roamed
197 * using FT, it attempts to set the key before
198 * association has completed, this rejects that attempt
199 * so it will set the key again after association.
200 *
201 * TODO: accept the key if we have a station entry and
202 * add it to the device after the station.
203 */
204 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
205 ieee80211_key_free_unused(key);
206 err = -ENOENT;
207 goto out_unlock;
208 }
209 }
210
211 switch (sdata->vif.type) {
212 case NL80211_IFTYPE_STATION:
213 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
214 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
215 break;
216 case NL80211_IFTYPE_AP:
217 case NL80211_IFTYPE_AP_VLAN:
218 /* Keys without a station are used for TX only */
219 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
220 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
221 break;
222 case NL80211_IFTYPE_ADHOC:
223 /* no MFP (yet) */
224 break;
225 case NL80211_IFTYPE_MESH_POINT:
226 #ifdef CONFIG_MAC80211_MESH
227 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
228 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
229 break;
230 #endif
231 case NL80211_IFTYPE_WDS:
232 case NL80211_IFTYPE_MONITOR:
233 case NL80211_IFTYPE_P2P_DEVICE:
234 case NL80211_IFTYPE_UNSPECIFIED:
235 case NUM_NL80211_IFTYPES:
236 case NL80211_IFTYPE_P2P_CLIENT:
237 case NL80211_IFTYPE_P2P_GO:
238 case NL80211_IFTYPE_OCB:
239 /* shouldn't happen */
240 WARN_ON_ONCE(1);
241 break;
242 }
243
244 if (sta)
245 sta->cipher_scheme = cs;
246
247 err = ieee80211_key_link(key, sdata, sta);
248
249 out_unlock:
250 mutex_unlock(&local->sta_mtx);
251
252 return err;
253 }
254
255 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
256 u8 key_idx, bool pairwise, const u8 *mac_addr)
257 {
258 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
259 struct ieee80211_local *local = sdata->local;
260 struct sta_info *sta;
261 struct ieee80211_key *key = NULL;
262 int ret;
263
264 mutex_lock(&local->sta_mtx);
265 mutex_lock(&local->key_mtx);
266
267 if (mac_addr) {
268 ret = -ENOENT;
269
270 sta = sta_info_get_bss(sdata, mac_addr);
271 if (!sta)
272 goto out_unlock;
273
274 if (pairwise)
275 key = key_mtx_dereference(local, sta->ptk[key_idx]);
276 else
277 key = key_mtx_dereference(local, sta->gtk[key_idx]);
278 } else
279 key = key_mtx_dereference(local, sdata->keys[key_idx]);
280
281 if (!key) {
282 ret = -ENOENT;
283 goto out_unlock;
284 }
285
286 ieee80211_key_free(key, true);
287
288 ret = 0;
289 out_unlock:
290 mutex_unlock(&local->key_mtx);
291 mutex_unlock(&local->sta_mtx);
292
293 return ret;
294 }
295
296 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
297 u8 key_idx, bool pairwise, const u8 *mac_addr,
298 void *cookie,
299 void (*callback)(void *cookie,
300 struct key_params *params))
301 {
302 struct ieee80211_sub_if_data *sdata;
303 struct sta_info *sta = NULL;
304 u8 seq[6] = {0};
305 struct key_params params;
306 struct ieee80211_key *key = NULL;
307 u64 pn64;
308 u32 iv32;
309 u16 iv16;
310 int err = -ENOENT;
311
312 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
313
314 rcu_read_lock();
315
316 if (mac_addr) {
317 sta = sta_info_get_bss(sdata, mac_addr);
318 if (!sta)
319 goto out;
320
321 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
322 key = rcu_dereference(sta->ptk[key_idx]);
323 else if (!pairwise &&
324 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
325 key = rcu_dereference(sta->gtk[key_idx]);
326 } else
327 key = rcu_dereference(sdata->keys[key_idx]);
328
329 if (!key)
330 goto out;
331
332 memset(&params, 0, sizeof(params));
333
334 params.cipher = key->conf.cipher;
335
336 switch (key->conf.cipher) {
337 case WLAN_CIPHER_SUITE_TKIP:
338 iv32 = key->u.tkip.tx.iv32;
339 iv16 = key->u.tkip.tx.iv16;
340
341 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
342 drv_get_tkip_seq(sdata->local,
343 key->conf.hw_key_idx,
344 &iv32, &iv16);
345
346 seq[0] = iv16 & 0xff;
347 seq[1] = (iv16 >> 8) & 0xff;
348 seq[2] = iv32 & 0xff;
349 seq[3] = (iv32 >> 8) & 0xff;
350 seq[4] = (iv32 >> 16) & 0xff;
351 seq[5] = (iv32 >> 24) & 0xff;
352 params.seq = seq;
353 params.seq_len = 6;
354 break;
355 case WLAN_CIPHER_SUITE_CCMP:
356 case WLAN_CIPHER_SUITE_CCMP_256:
357 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
358 seq[0] = pn64;
359 seq[1] = pn64 >> 8;
360 seq[2] = pn64 >> 16;
361 seq[3] = pn64 >> 24;
362 seq[4] = pn64 >> 32;
363 seq[5] = pn64 >> 40;
364 params.seq = seq;
365 params.seq_len = 6;
366 break;
367 case WLAN_CIPHER_SUITE_AES_CMAC:
368 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
369 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
370 seq[0] = pn64;
371 seq[1] = pn64 >> 8;
372 seq[2] = pn64 >> 16;
373 seq[3] = pn64 >> 24;
374 seq[4] = pn64 >> 32;
375 seq[5] = pn64 >> 40;
376 params.seq = seq;
377 params.seq_len = 6;
378 break;
379 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
380 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
381 pn64 = atomic64_read(&key->u.aes_gmac.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 params.seq = seq;
389 params.seq_len = 6;
390 break;
391 case WLAN_CIPHER_SUITE_GCMP:
392 case WLAN_CIPHER_SUITE_GCMP_256:
393 pn64 = atomic64_read(&key->u.gcmp.tx_pn);
394 seq[0] = pn64;
395 seq[1] = pn64 >> 8;
396 seq[2] = pn64 >> 16;
397 seq[3] = pn64 >> 24;
398 seq[4] = pn64 >> 32;
399 seq[5] = pn64 >> 40;
400 params.seq = seq;
401 params.seq_len = 6;
402 break;
403 }
404
405 params.key = key->conf.key;
406 params.key_len = key->conf.keylen;
407
408 callback(cookie, &params);
409 err = 0;
410
411 out:
412 rcu_read_unlock();
413 return err;
414 }
415
416 static int ieee80211_config_default_key(struct wiphy *wiphy,
417 struct net_device *dev,
418 u8 key_idx, bool uni,
419 bool multi)
420 {
421 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
422
423 ieee80211_set_default_key(sdata, key_idx, uni, multi);
424
425 return 0;
426 }
427
428 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
429 struct net_device *dev,
430 u8 key_idx)
431 {
432 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
433
434 ieee80211_set_default_mgmt_key(sdata, key_idx);
435
436 return 0;
437 }
438
439 void sta_set_rate_info_tx(struct sta_info *sta,
440 const struct ieee80211_tx_rate *rate,
441 struct rate_info *rinfo)
442 {
443 rinfo->flags = 0;
444 if (rate->flags & IEEE80211_TX_RC_MCS) {
445 rinfo->flags |= RATE_INFO_FLAGS_MCS;
446 rinfo->mcs = rate->idx;
447 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
448 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
449 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
450 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
451 } else {
452 struct ieee80211_supported_band *sband;
453 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
454 u16 brate;
455
456 sband = sta->local->hw.wiphy->bands[
457 ieee80211_get_sdata_band(sta->sdata)];
458 brate = sband->bitrates[rate->idx].bitrate;
459 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
460 }
461 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
462 rinfo->bw = RATE_INFO_BW_40;
463 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
464 rinfo->bw = RATE_INFO_BW_80;
465 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
466 rinfo->bw = RATE_INFO_BW_160;
467 else
468 rinfo->bw = RATE_INFO_BW_20;
469 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
470 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
471 }
472
473 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
474 {
475 rinfo->flags = 0;
476
477 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
478 rinfo->flags |= RATE_INFO_FLAGS_MCS;
479 rinfo->mcs = sta->last_rx_rate_idx;
480 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
481 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
482 rinfo->nss = sta->last_rx_rate_vht_nss;
483 rinfo->mcs = sta->last_rx_rate_idx;
484 } else {
485 struct ieee80211_supported_band *sband;
486 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
487 u16 brate;
488
489 sband = sta->local->hw.wiphy->bands[
490 ieee80211_get_sdata_band(sta->sdata)];
491 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
492 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
493 }
494
495 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
496 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
497
498 if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
499 rinfo->bw = RATE_INFO_BW_5;
500 else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
501 rinfo->bw = RATE_INFO_BW_10;
502 else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
503 rinfo->bw = RATE_INFO_BW_40;
504 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
505 rinfo->bw = RATE_INFO_BW_80;
506 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
507 rinfo->bw = RATE_INFO_BW_160;
508 else
509 rinfo->bw = RATE_INFO_BW_20;
510 }
511
512 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
513 int idx, u8 *mac, struct station_info *sinfo)
514 {
515 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
516 struct ieee80211_local *local = sdata->local;
517 struct sta_info *sta;
518 int ret = -ENOENT;
519
520 mutex_lock(&local->sta_mtx);
521
522 sta = sta_info_get_by_idx(sdata, idx);
523 if (sta) {
524 ret = 0;
525 memcpy(mac, sta->sta.addr, ETH_ALEN);
526 sta_set_sinfo(sta, sinfo);
527 }
528
529 mutex_unlock(&local->sta_mtx);
530
531 return ret;
532 }
533
534 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
535 int idx, struct survey_info *survey)
536 {
537 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
538
539 return drv_get_survey(local, idx, survey);
540 }
541
542 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
543 const u8 *mac, struct station_info *sinfo)
544 {
545 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
546 struct ieee80211_local *local = sdata->local;
547 struct sta_info *sta;
548 int ret = -ENOENT;
549
550 mutex_lock(&local->sta_mtx);
551
552 sta = sta_info_get_bss(sdata, mac);
553 if (sta) {
554 ret = 0;
555 sta_set_sinfo(sta, sinfo);
556 }
557
558 mutex_unlock(&local->sta_mtx);
559
560 return ret;
561 }
562
563 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
564 struct cfg80211_chan_def *chandef)
565 {
566 struct ieee80211_local *local = wiphy_priv(wiphy);
567 struct ieee80211_sub_if_data *sdata;
568 int ret = 0;
569
570 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
571 return 0;
572
573 mutex_lock(&local->mtx);
574 mutex_lock(&local->iflist_mtx);
575 if (local->use_chanctx) {
576 sdata = rcu_dereference_protected(
577 local->monitor_sdata,
578 lockdep_is_held(&local->iflist_mtx));
579 if (sdata) {
580 ieee80211_vif_release_channel(sdata);
581 ret = ieee80211_vif_use_channel(sdata, chandef,
582 IEEE80211_CHANCTX_EXCLUSIVE);
583 }
584 } else if (local->open_count == local->monitors) {
585 local->_oper_chandef = *chandef;
586 ieee80211_hw_config(local, 0);
587 }
588
589 if (ret == 0)
590 local->monitor_chandef = *chandef;
591 mutex_unlock(&local->iflist_mtx);
592 mutex_unlock(&local->mtx);
593
594 return ret;
595 }
596
597 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
598 const u8 *resp, size_t resp_len,
599 const struct ieee80211_csa_settings *csa)
600 {
601 struct probe_resp *new, *old;
602
603 if (!resp || !resp_len)
604 return 1;
605
606 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
607
608 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
609 if (!new)
610 return -ENOMEM;
611
612 new->len = resp_len;
613 memcpy(new->data, resp, resp_len);
614
615 if (csa)
616 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
617 csa->n_counter_offsets_presp *
618 sizeof(new->csa_counter_offsets[0]));
619
620 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
621 if (old)
622 kfree_rcu(old, rcu_head);
623
624 return 0;
625 }
626
627 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
628 struct cfg80211_beacon_data *params,
629 const struct ieee80211_csa_settings *csa)
630 {
631 struct beacon_data *new, *old;
632 int new_head_len, new_tail_len;
633 int size, err;
634 u32 changed = BSS_CHANGED_BEACON;
635
636 old = sdata_dereference(sdata->u.ap.beacon, sdata);
637
638
639 /* Need to have a beacon head if we don't have one yet */
640 if (!params->head && !old)
641 return -EINVAL;
642
643 /* new or old head? */
644 if (params->head)
645 new_head_len = params->head_len;
646 else
647 new_head_len = old->head_len;
648
649 /* new or old tail? */
650 if (params->tail || !old)
651 /* params->tail_len will be zero for !params->tail */
652 new_tail_len = params->tail_len;
653 else
654 new_tail_len = old->tail_len;
655
656 size = sizeof(*new) + new_head_len + new_tail_len;
657
658 new = kzalloc(size, GFP_KERNEL);
659 if (!new)
660 return -ENOMEM;
661
662 /* start filling the new info now */
663
664 /*
665 * pointers go into the block we allocated,
666 * memory is | beacon_data | head | tail |
667 */
668 new->head = ((u8 *) new) + sizeof(*new);
669 new->tail = new->head + new_head_len;
670 new->head_len = new_head_len;
671 new->tail_len = new_tail_len;
672
673 if (csa) {
674 new->csa_current_counter = csa->count;
675 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
676 csa->n_counter_offsets_beacon *
677 sizeof(new->csa_counter_offsets[0]));
678 }
679
680 /* copy in head */
681 if (params->head)
682 memcpy(new->head, params->head, new_head_len);
683 else
684 memcpy(new->head, old->head, new_head_len);
685
686 /* copy in optional tail */
687 if (params->tail)
688 memcpy(new->tail, params->tail, new_tail_len);
689 else
690 if (old)
691 memcpy(new->tail, old->tail, new_tail_len);
692
693 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
694 params->probe_resp_len, csa);
695 if (err < 0)
696 return err;
697 if (err == 0)
698 changed |= BSS_CHANGED_AP_PROBE_RESP;
699
700 rcu_assign_pointer(sdata->u.ap.beacon, new);
701
702 if (old)
703 kfree_rcu(old, rcu_head);
704
705 return changed;
706 }
707
708 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
709 struct cfg80211_ap_settings *params)
710 {
711 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
712 struct ieee80211_local *local = sdata->local;
713 struct beacon_data *old;
714 struct ieee80211_sub_if_data *vlan;
715 u32 changed = BSS_CHANGED_BEACON_INT |
716 BSS_CHANGED_BEACON_ENABLED |
717 BSS_CHANGED_BEACON |
718 BSS_CHANGED_SSID |
719 BSS_CHANGED_P2P_PS |
720 BSS_CHANGED_TXPOWER;
721 int err;
722
723 old = sdata_dereference(sdata->u.ap.beacon, sdata);
724 if (old)
725 return -EALREADY;
726
727 switch (params->smps_mode) {
728 case NL80211_SMPS_OFF:
729 sdata->smps_mode = IEEE80211_SMPS_OFF;
730 break;
731 case NL80211_SMPS_STATIC:
732 sdata->smps_mode = IEEE80211_SMPS_STATIC;
733 break;
734 case NL80211_SMPS_DYNAMIC:
735 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
736 break;
737 default:
738 return -EINVAL;
739 }
740 sdata->needed_rx_chains = sdata->local->rx_chains;
741
742 mutex_lock(&local->mtx);
743 err = ieee80211_vif_use_channel(sdata, &params->chandef,
744 IEEE80211_CHANCTX_SHARED);
745 if (!err)
746 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
747 mutex_unlock(&local->mtx);
748 if (err)
749 return err;
750
751 /*
752 * Apply control port protocol, this allows us to
753 * not encrypt dynamic WEP control frames.
754 */
755 sdata->control_port_protocol = params->crypto.control_port_ethertype;
756 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
757 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
758 &params->crypto,
759 sdata->vif.type);
760
761 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
762 vlan->control_port_protocol =
763 params->crypto.control_port_ethertype;
764 vlan->control_port_no_encrypt =
765 params->crypto.control_port_no_encrypt;
766 vlan->encrypt_headroom =
767 ieee80211_cs_headroom(sdata->local,
768 &params->crypto,
769 vlan->vif.type);
770 }
771
772 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
773 sdata->vif.bss_conf.dtim_period = params->dtim_period;
774 sdata->vif.bss_conf.enable_beacon = true;
775
776 sdata->vif.bss_conf.ssid_len = params->ssid_len;
777 if (params->ssid_len)
778 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
779 params->ssid_len);
780 sdata->vif.bss_conf.hidden_ssid =
781 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
782
783 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
784 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
785 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
786 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
787 if (params->p2p_opp_ps)
788 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
789 IEEE80211_P2P_OPPPS_ENABLE_BIT;
790
791 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
792 if (err < 0) {
793 ieee80211_vif_release_channel(sdata);
794 return err;
795 }
796 changed |= err;
797
798 err = drv_start_ap(sdata->local, sdata);
799 if (err) {
800 old = sdata_dereference(sdata->u.ap.beacon, sdata);
801
802 if (old)
803 kfree_rcu(old, rcu_head);
804 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
805 ieee80211_vif_release_channel(sdata);
806 return err;
807 }
808
809 ieee80211_recalc_dtim(local, sdata);
810 ieee80211_bss_info_change_notify(sdata, changed);
811
812 netif_carrier_on(dev);
813 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
814 netif_carrier_on(vlan->dev);
815
816 return 0;
817 }
818
819 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
820 struct cfg80211_beacon_data *params)
821 {
822 struct ieee80211_sub_if_data *sdata;
823 struct beacon_data *old;
824 int err;
825
826 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
827 sdata_assert_lock(sdata);
828
829 /* don't allow changing the beacon while CSA is in place - offset
830 * of channel switch counter may change
831 */
832 if (sdata->vif.csa_active)
833 return -EBUSY;
834
835 old = sdata_dereference(sdata->u.ap.beacon, sdata);
836 if (!old)
837 return -ENOENT;
838
839 err = ieee80211_assign_beacon(sdata, params, NULL);
840 if (err < 0)
841 return err;
842 ieee80211_bss_info_change_notify(sdata, err);
843 return 0;
844 }
845
846 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
847 {
848 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
849 struct ieee80211_sub_if_data *vlan;
850 struct ieee80211_local *local = sdata->local;
851 struct beacon_data *old_beacon;
852 struct probe_resp *old_probe_resp;
853 struct cfg80211_chan_def chandef;
854
855 sdata_assert_lock(sdata);
856
857 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
858 if (!old_beacon)
859 return -ENOENT;
860 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
861
862 /* abort any running channel switch */
863 mutex_lock(&local->mtx);
864 sdata->vif.csa_active = false;
865 if (sdata->csa_block_tx) {
866 ieee80211_wake_vif_queues(local, sdata,
867 IEEE80211_QUEUE_STOP_REASON_CSA);
868 sdata->csa_block_tx = false;
869 }
870
871 mutex_unlock(&local->mtx);
872
873 kfree(sdata->u.ap.next_beacon);
874 sdata->u.ap.next_beacon = NULL;
875
876 /* turn off carrier for this interface and dependent VLANs */
877 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
878 netif_carrier_off(vlan->dev);
879 netif_carrier_off(dev);
880
881 /* remove beacon and probe response */
882 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
883 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
884 kfree_rcu(old_beacon, rcu_head);
885 if (old_probe_resp)
886 kfree_rcu(old_probe_resp, rcu_head);
887 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
888
889 __sta_info_flush(sdata, true);
890 ieee80211_free_keys(sdata, true);
891
892 sdata->vif.bss_conf.enable_beacon = false;
893 sdata->vif.bss_conf.ssid_len = 0;
894 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
895 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
896
897 if (sdata->wdev.cac_started) {
898 chandef = sdata->vif.bss_conf.chandef;
899 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
900 cfg80211_cac_event(sdata->dev, &chandef,
901 NL80211_RADAR_CAC_ABORTED,
902 GFP_KERNEL);
903 }
904
905 drv_stop_ap(sdata->local, sdata);
906
907 /* free all potentially still buffered bcast frames */
908 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
909 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
910
911 mutex_lock(&local->mtx);
912 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
913 ieee80211_vif_release_channel(sdata);
914 mutex_unlock(&local->mtx);
915
916 return 0;
917 }
918
919 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
920 struct iapp_layer2_update {
921 u8 da[ETH_ALEN]; /* broadcast */
922 u8 sa[ETH_ALEN]; /* STA addr */
923 __be16 len; /* 6 */
924 u8 dsap; /* 0 */
925 u8 ssap; /* 0 */
926 u8 control;
927 u8 xid_info[3];
928 } __packed;
929
930 static void ieee80211_send_layer2_update(struct sta_info *sta)
931 {
932 struct iapp_layer2_update *msg;
933 struct sk_buff *skb;
934
935 /* Send Level 2 Update Frame to update forwarding tables in layer 2
936 * bridge devices */
937
938 skb = dev_alloc_skb(sizeof(*msg));
939 if (!skb)
940 return;
941 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
942
943 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
944 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
945
946 eth_broadcast_addr(msg->da);
947 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
948 msg->len = htons(6);
949 msg->dsap = 0;
950 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
951 msg->control = 0xaf; /* XID response lsb.1111F101.
952 * F=0 (no poll command; unsolicited frame) */
953 msg->xid_info[0] = 0x81; /* XID format identifier */
954 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
955 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
956
957 skb->dev = sta->sdata->dev;
958 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
959 memset(skb->cb, 0, sizeof(skb->cb));
960 netif_rx_ni(skb);
961 }
962
963 static int sta_apply_auth_flags(struct ieee80211_local *local,
964 struct sta_info *sta,
965 u32 mask, u32 set)
966 {
967 int ret;
968
969 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
970 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
971 !test_sta_flag(sta, WLAN_STA_AUTH)) {
972 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
973 if (ret)
974 return ret;
975 }
976
977 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
978 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
979 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
980 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
981 if (ret)
982 return ret;
983 }
984
985 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
986 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
987 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
988 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
989 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
990 else
991 ret = 0;
992 if (ret)
993 return ret;
994 }
995
996 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
997 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
998 test_sta_flag(sta, WLAN_STA_ASSOC)) {
999 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1000 if (ret)
1001 return ret;
1002 }
1003
1004 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1005 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1006 test_sta_flag(sta, WLAN_STA_AUTH)) {
1007 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1008 if (ret)
1009 return ret;
1010 }
1011
1012 return 0;
1013 }
1014
1015 static int sta_apply_parameters(struct ieee80211_local *local,
1016 struct sta_info *sta,
1017 struct station_parameters *params)
1018 {
1019 int ret = 0;
1020 struct ieee80211_supported_band *sband;
1021 struct ieee80211_sub_if_data *sdata = sta->sdata;
1022 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1023 u32 mask, set;
1024
1025 sband = local->hw.wiphy->bands[band];
1026
1027 mask = params->sta_flags_mask;
1028 set = params->sta_flags_set;
1029
1030 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1031 /*
1032 * In mesh mode, ASSOCIATED isn't part of the nl80211
1033 * API but must follow AUTHENTICATED for driver state.
1034 */
1035 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1036 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1037 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1038 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1039 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1040 /*
1041 * TDLS -- everything follows authorized, but
1042 * only becoming authorized is possible, not
1043 * going back
1044 */
1045 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1046 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1047 BIT(NL80211_STA_FLAG_ASSOCIATED);
1048 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1049 BIT(NL80211_STA_FLAG_ASSOCIATED);
1050 }
1051 }
1052
1053 /* auth flags will be set later for TDLS stations */
1054 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1055 ret = sta_apply_auth_flags(local, sta, mask, set);
1056 if (ret)
1057 return ret;
1058 }
1059
1060 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1061 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1062 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1063 else
1064 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1065 }
1066
1067 if (mask & BIT(NL80211_STA_FLAG_WME))
1068 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1069
1070 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1071 if (set & BIT(NL80211_STA_FLAG_MFP))
1072 set_sta_flag(sta, WLAN_STA_MFP);
1073 else
1074 clear_sta_flag(sta, WLAN_STA_MFP);
1075 }
1076
1077 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1078 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1079 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1080 else
1081 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1082 }
1083
1084 /* mark TDLS channel switch support, if the AP allows it */
1085 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1086 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1087 params->ext_capab_len >= 4 &&
1088 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1089 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1090
1091 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1092 sta->sta.uapsd_queues = params->uapsd_queues;
1093 sta->sta.max_sp = params->max_sp;
1094 }
1095
1096 /*
1097 * cfg80211 validates this (1-2007) and allows setting the AID
1098 * only when creating a new station entry
1099 */
1100 if (params->aid)
1101 sta->sta.aid = params->aid;
1102
1103 /*
1104 * Some of the following updates would be racy if called on an
1105 * existing station, via ieee80211_change_station(). However,
1106 * all such changes are rejected by cfg80211 except for updates
1107 * changing the supported rates on an existing but not yet used
1108 * TDLS peer.
1109 */
1110
1111 if (params->listen_interval >= 0)
1112 sta->listen_interval = params->listen_interval;
1113
1114 if (params->supported_rates) {
1115 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1116 sband, params->supported_rates,
1117 params->supported_rates_len,
1118 &sta->sta.supp_rates[band]);
1119 }
1120
1121 if (params->ht_capa)
1122 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1123 params->ht_capa, sta);
1124
1125 if (params->vht_capa)
1126 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1127 params->vht_capa, sta);
1128
1129 if (params->opmode_notif_used) {
1130 /* returned value is only needed for rc update, but the
1131 * rc isn't initialized here yet, so ignore it
1132 */
1133 __ieee80211_vht_handle_opmode(sdata, sta,
1134 params->opmode_notif,
1135 band, false);
1136 }
1137
1138 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1139 #ifdef CONFIG_MAC80211_MESH
1140 u32 changed = 0;
1141
1142 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1143 switch (params->plink_state) {
1144 case NL80211_PLINK_ESTAB:
1145 if (sta->plink_state != NL80211_PLINK_ESTAB)
1146 changed = mesh_plink_inc_estab_count(
1147 sdata);
1148 sta->plink_state = params->plink_state;
1149
1150 ieee80211_mps_sta_status_update(sta);
1151 changed |= ieee80211_mps_set_sta_local_pm(sta,
1152 sdata->u.mesh.mshcfg.power_mode);
1153 break;
1154 case NL80211_PLINK_LISTEN:
1155 case NL80211_PLINK_BLOCKED:
1156 case NL80211_PLINK_OPN_SNT:
1157 case NL80211_PLINK_OPN_RCVD:
1158 case NL80211_PLINK_CNF_RCVD:
1159 case NL80211_PLINK_HOLDING:
1160 if (sta->plink_state == NL80211_PLINK_ESTAB)
1161 changed = mesh_plink_dec_estab_count(
1162 sdata);
1163 sta->plink_state = params->plink_state;
1164
1165 ieee80211_mps_sta_status_update(sta);
1166 changed |= ieee80211_mps_set_sta_local_pm(sta,
1167 NL80211_MESH_POWER_UNKNOWN);
1168 break;
1169 default:
1170 /* nothing */
1171 break;
1172 }
1173 }
1174
1175 switch (params->plink_action) {
1176 case NL80211_PLINK_ACTION_NO_ACTION:
1177 /* nothing */
1178 break;
1179 case NL80211_PLINK_ACTION_OPEN:
1180 changed |= mesh_plink_open(sta);
1181 break;
1182 case NL80211_PLINK_ACTION_BLOCK:
1183 changed |= mesh_plink_block(sta);
1184 break;
1185 }
1186
1187 if (params->local_pm)
1188 changed |=
1189 ieee80211_mps_set_sta_local_pm(sta,
1190 params->local_pm);
1191 ieee80211_mbss_info_change_notify(sdata, changed);
1192 #endif
1193 }
1194
1195 /* set the STA state after all sta info from usermode has been set */
1196 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1197 ret = sta_apply_auth_flags(local, sta, mask, set);
1198 if (ret)
1199 return ret;
1200 }
1201
1202 return 0;
1203 }
1204
1205 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1206 const u8 *mac,
1207 struct station_parameters *params)
1208 {
1209 struct ieee80211_local *local = wiphy_priv(wiphy);
1210 struct sta_info *sta;
1211 struct ieee80211_sub_if_data *sdata;
1212 int err;
1213 int layer2_update;
1214
1215 if (params->vlan) {
1216 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1217
1218 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1219 sdata->vif.type != NL80211_IFTYPE_AP)
1220 return -EINVAL;
1221 } else
1222 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1223
1224 if (ether_addr_equal(mac, sdata->vif.addr))
1225 return -EINVAL;
1226
1227 if (is_multicast_ether_addr(mac))
1228 return -EINVAL;
1229
1230 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1231 if (!sta)
1232 return -ENOMEM;
1233
1234 /*
1235 * defaults -- if userspace wants something else we'll
1236 * change it accordingly in sta_apply_parameters()
1237 */
1238 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1239 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1240 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1241 } else {
1242 sta->sta.tdls = true;
1243 }
1244
1245 err = sta_apply_parameters(local, sta, params);
1246 if (err) {
1247 sta_info_free(local, sta);
1248 return err;
1249 }
1250
1251 /*
1252 * for TDLS, rate control should be initialized only when
1253 * rates are known and station is marked authorized
1254 */
1255 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1256 rate_control_rate_init(sta);
1257
1258 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1259 sdata->vif.type == NL80211_IFTYPE_AP;
1260
1261 err = sta_info_insert_rcu(sta);
1262 if (err) {
1263 rcu_read_unlock();
1264 return err;
1265 }
1266
1267 if (layer2_update)
1268 ieee80211_send_layer2_update(sta);
1269
1270 rcu_read_unlock();
1271
1272 return 0;
1273 }
1274
1275 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1276 struct station_del_parameters *params)
1277 {
1278 struct ieee80211_sub_if_data *sdata;
1279
1280 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1281
1282 if (params->mac)
1283 return sta_info_destroy_addr_bss(sdata, params->mac);
1284
1285 sta_info_flush(sdata);
1286 return 0;
1287 }
1288
1289 static int ieee80211_change_station(struct wiphy *wiphy,
1290 struct net_device *dev, const u8 *mac,
1291 struct station_parameters *params)
1292 {
1293 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1294 struct ieee80211_local *local = wiphy_priv(wiphy);
1295 struct sta_info *sta;
1296 struct ieee80211_sub_if_data *vlansdata;
1297 enum cfg80211_station_type statype;
1298 int err;
1299
1300 mutex_lock(&local->sta_mtx);
1301
1302 sta = sta_info_get_bss(sdata, mac);
1303 if (!sta) {
1304 err = -ENOENT;
1305 goto out_err;
1306 }
1307
1308 switch (sdata->vif.type) {
1309 case NL80211_IFTYPE_MESH_POINT:
1310 if (sdata->u.mesh.user_mpm)
1311 statype = CFG80211_STA_MESH_PEER_USER;
1312 else
1313 statype = CFG80211_STA_MESH_PEER_KERNEL;
1314 break;
1315 case NL80211_IFTYPE_ADHOC:
1316 statype = CFG80211_STA_IBSS;
1317 break;
1318 case NL80211_IFTYPE_STATION:
1319 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1320 statype = CFG80211_STA_AP_STA;
1321 break;
1322 }
1323 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1324 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1325 else
1326 statype = CFG80211_STA_TDLS_PEER_SETUP;
1327 break;
1328 case NL80211_IFTYPE_AP:
1329 case NL80211_IFTYPE_AP_VLAN:
1330 statype = CFG80211_STA_AP_CLIENT;
1331 break;
1332 default:
1333 err = -EOPNOTSUPP;
1334 goto out_err;
1335 }
1336
1337 err = cfg80211_check_station_change(wiphy, params, statype);
1338 if (err)
1339 goto out_err;
1340
1341 if (params->vlan && params->vlan != sta->sdata->dev) {
1342 bool prev_4addr = false;
1343 bool new_4addr = false;
1344
1345 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1346
1347 if (params->vlan->ieee80211_ptr->use_4addr) {
1348 if (vlansdata->u.vlan.sta) {
1349 err = -EBUSY;
1350 goto out_err;
1351 }
1352
1353 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1354 new_4addr = true;
1355 }
1356
1357 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1358 sta->sdata->u.vlan.sta) {
1359 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1360 prev_4addr = true;
1361 }
1362
1363 sta->sdata = vlansdata;
1364
1365 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1366 prev_4addr != new_4addr) {
1367 if (new_4addr)
1368 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1369 else
1370 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1371 }
1372
1373 ieee80211_send_layer2_update(sta);
1374 }
1375
1376 err = sta_apply_parameters(local, sta, params);
1377 if (err)
1378 goto out_err;
1379
1380 /* When peer becomes authorized, init rate control as well */
1381 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1382 test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1383 rate_control_rate_init(sta);
1384
1385 mutex_unlock(&local->sta_mtx);
1386
1387 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1388 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1389 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1390 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1391 sta_info_tx_streams(sta) != 1) {
1392 ht_dbg(sta->sdata,
1393 "%pM just authorized and MIMO capable - update SMPS\n",
1394 sta->sta.addr);
1395 ieee80211_send_smps_action(sta->sdata,
1396 sta->sdata->bss->req_smps,
1397 sta->sta.addr,
1398 sta->sdata->vif.bss_conf.bssid);
1399 }
1400
1401 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1402 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1403 ieee80211_recalc_ps(local, -1);
1404 ieee80211_recalc_ps_vif(sdata);
1405 }
1406
1407 return 0;
1408 out_err:
1409 mutex_unlock(&local->sta_mtx);
1410 return err;
1411 }
1412
1413 #ifdef CONFIG_MAC80211_MESH
1414 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1415 const u8 *dst, const u8 *next_hop)
1416 {
1417 struct ieee80211_sub_if_data *sdata;
1418 struct mesh_path *mpath;
1419 struct sta_info *sta;
1420
1421 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1422
1423 rcu_read_lock();
1424 sta = sta_info_get(sdata, next_hop);
1425 if (!sta) {
1426 rcu_read_unlock();
1427 return -ENOENT;
1428 }
1429
1430 mpath = mesh_path_add(sdata, dst);
1431 if (IS_ERR(mpath)) {
1432 rcu_read_unlock();
1433 return PTR_ERR(mpath);
1434 }
1435
1436 mesh_path_fix_nexthop(mpath, sta);
1437
1438 rcu_read_unlock();
1439 return 0;
1440 }
1441
1442 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1443 const u8 *dst)
1444 {
1445 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1446
1447 if (dst)
1448 return mesh_path_del(sdata, dst);
1449
1450 mesh_path_flush_by_iface(sdata);
1451 return 0;
1452 }
1453
1454 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1455 const u8 *dst, const u8 *next_hop)
1456 {
1457 struct ieee80211_sub_if_data *sdata;
1458 struct mesh_path *mpath;
1459 struct sta_info *sta;
1460
1461 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1462
1463 rcu_read_lock();
1464
1465 sta = sta_info_get(sdata, next_hop);
1466 if (!sta) {
1467 rcu_read_unlock();
1468 return -ENOENT;
1469 }
1470
1471 mpath = mesh_path_lookup(sdata, dst);
1472 if (!mpath) {
1473 rcu_read_unlock();
1474 return -ENOENT;
1475 }
1476
1477 mesh_path_fix_nexthop(mpath, sta);
1478
1479 rcu_read_unlock();
1480 return 0;
1481 }
1482
1483 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1484 struct mpath_info *pinfo)
1485 {
1486 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1487
1488 if (next_hop_sta)
1489 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1490 else
1491 memset(next_hop, 0, ETH_ALEN);
1492
1493 memset(pinfo, 0, sizeof(*pinfo));
1494
1495 pinfo->generation = mesh_paths_generation;
1496
1497 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1498 MPATH_INFO_SN |
1499 MPATH_INFO_METRIC |
1500 MPATH_INFO_EXPTIME |
1501 MPATH_INFO_DISCOVERY_TIMEOUT |
1502 MPATH_INFO_DISCOVERY_RETRIES |
1503 MPATH_INFO_FLAGS;
1504
1505 pinfo->frame_qlen = mpath->frame_queue.qlen;
1506 pinfo->sn = mpath->sn;
1507 pinfo->metric = mpath->metric;
1508 if (time_before(jiffies, mpath->exp_time))
1509 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1510 pinfo->discovery_timeout =
1511 jiffies_to_msecs(mpath->discovery_timeout);
1512 pinfo->discovery_retries = mpath->discovery_retries;
1513 if (mpath->flags & MESH_PATH_ACTIVE)
1514 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1515 if (mpath->flags & MESH_PATH_RESOLVING)
1516 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1517 if (mpath->flags & MESH_PATH_SN_VALID)
1518 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1519 if (mpath->flags & MESH_PATH_FIXED)
1520 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1521 if (mpath->flags & MESH_PATH_RESOLVED)
1522 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1523 }
1524
1525 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1526 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1527
1528 {
1529 struct ieee80211_sub_if_data *sdata;
1530 struct mesh_path *mpath;
1531
1532 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1533
1534 rcu_read_lock();
1535 mpath = mesh_path_lookup(sdata, dst);
1536 if (!mpath) {
1537 rcu_read_unlock();
1538 return -ENOENT;
1539 }
1540 memcpy(dst, mpath->dst, ETH_ALEN);
1541 mpath_set_pinfo(mpath, next_hop, pinfo);
1542 rcu_read_unlock();
1543 return 0;
1544 }
1545
1546 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1547 int idx, u8 *dst, u8 *next_hop,
1548 struct mpath_info *pinfo)
1549 {
1550 struct ieee80211_sub_if_data *sdata;
1551 struct mesh_path *mpath;
1552
1553 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1554
1555 rcu_read_lock();
1556 mpath = mesh_path_lookup_by_idx(sdata, idx);
1557 if (!mpath) {
1558 rcu_read_unlock();
1559 return -ENOENT;
1560 }
1561 memcpy(dst, mpath->dst, ETH_ALEN);
1562 mpath_set_pinfo(mpath, next_hop, pinfo);
1563 rcu_read_unlock();
1564 return 0;
1565 }
1566
1567 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1568 struct mpath_info *pinfo)
1569 {
1570 memset(pinfo, 0, sizeof(*pinfo));
1571 memcpy(mpp, mpath->mpp, ETH_ALEN);
1572
1573 pinfo->generation = mpp_paths_generation;
1574 }
1575
1576 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1577 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1578
1579 {
1580 struct ieee80211_sub_if_data *sdata;
1581 struct mesh_path *mpath;
1582
1583 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1584
1585 rcu_read_lock();
1586 mpath = mpp_path_lookup(sdata, dst);
1587 if (!mpath) {
1588 rcu_read_unlock();
1589 return -ENOENT;
1590 }
1591 memcpy(dst, mpath->dst, ETH_ALEN);
1592 mpp_set_pinfo(mpath, mpp, pinfo);
1593 rcu_read_unlock();
1594 return 0;
1595 }
1596
1597 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1598 int idx, u8 *dst, u8 *mpp,
1599 struct mpath_info *pinfo)
1600 {
1601 struct ieee80211_sub_if_data *sdata;
1602 struct mesh_path *mpath;
1603
1604 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1605
1606 rcu_read_lock();
1607 mpath = mpp_path_lookup_by_idx(sdata, idx);
1608 if (!mpath) {
1609 rcu_read_unlock();
1610 return -ENOENT;
1611 }
1612 memcpy(dst, mpath->dst, ETH_ALEN);
1613 mpp_set_pinfo(mpath, mpp, pinfo);
1614 rcu_read_unlock();
1615 return 0;
1616 }
1617
1618 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1619 struct net_device *dev,
1620 struct mesh_config *conf)
1621 {
1622 struct ieee80211_sub_if_data *sdata;
1623 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1624
1625 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1626 return 0;
1627 }
1628
1629 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1630 {
1631 return (mask >> (parm-1)) & 0x1;
1632 }
1633
1634 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1635 const struct mesh_setup *setup)
1636 {
1637 u8 *new_ie;
1638 const u8 *old_ie;
1639 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1640 struct ieee80211_sub_if_data, u.mesh);
1641
1642 /* allocate information elements */
1643 new_ie = NULL;
1644 old_ie = ifmsh->ie;
1645
1646 if (setup->ie_len) {
1647 new_ie = kmemdup(setup->ie, setup->ie_len,
1648 GFP_KERNEL);
1649 if (!new_ie)
1650 return -ENOMEM;
1651 }
1652 ifmsh->ie_len = setup->ie_len;
1653 ifmsh->ie = new_ie;
1654 kfree(old_ie);
1655
1656 /* now copy the rest of the setup parameters */
1657 ifmsh->mesh_id_len = setup->mesh_id_len;
1658 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1659 ifmsh->mesh_sp_id = setup->sync_method;
1660 ifmsh->mesh_pp_id = setup->path_sel_proto;
1661 ifmsh->mesh_pm_id = setup->path_metric;
1662 ifmsh->user_mpm = setup->user_mpm;
1663 ifmsh->mesh_auth_id = setup->auth_id;
1664 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1665 if (setup->is_authenticated)
1666 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1667 if (setup->is_secure)
1668 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1669
1670 /* mcast rate setting in Mesh Node */
1671 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1672 sizeof(setup->mcast_rate));
1673 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1674
1675 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1676 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1677
1678 return 0;
1679 }
1680
1681 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1682 struct net_device *dev, u32 mask,
1683 const struct mesh_config *nconf)
1684 {
1685 struct mesh_config *conf;
1686 struct ieee80211_sub_if_data *sdata;
1687 struct ieee80211_if_mesh *ifmsh;
1688
1689 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1690 ifmsh = &sdata->u.mesh;
1691
1692 /* Set the config options which we are interested in setting */
1693 conf = &(sdata->u.mesh.mshcfg);
1694 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1695 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1696 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1697 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1698 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1699 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1700 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1701 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1702 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1703 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1704 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1705 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1706 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1707 conf->element_ttl = nconf->element_ttl;
1708 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1709 if (ifmsh->user_mpm)
1710 return -EBUSY;
1711 conf->auto_open_plinks = nconf->auto_open_plinks;
1712 }
1713 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1714 conf->dot11MeshNbrOffsetMaxNeighbor =
1715 nconf->dot11MeshNbrOffsetMaxNeighbor;
1716 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1717 conf->dot11MeshHWMPmaxPREQretries =
1718 nconf->dot11MeshHWMPmaxPREQretries;
1719 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1720 conf->path_refresh_time = nconf->path_refresh_time;
1721 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1722 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1723 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1724 conf->dot11MeshHWMPactivePathTimeout =
1725 nconf->dot11MeshHWMPactivePathTimeout;
1726 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1727 conf->dot11MeshHWMPpreqMinInterval =
1728 nconf->dot11MeshHWMPpreqMinInterval;
1729 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1730 conf->dot11MeshHWMPperrMinInterval =
1731 nconf->dot11MeshHWMPperrMinInterval;
1732 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1733 mask))
1734 conf->dot11MeshHWMPnetDiameterTraversalTime =
1735 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1736 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1737 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1738 ieee80211_mesh_root_setup(ifmsh);
1739 }
1740 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1741 /* our current gate announcement implementation rides on root
1742 * announcements, so require this ifmsh to also be a root node
1743 * */
1744 if (nconf->dot11MeshGateAnnouncementProtocol &&
1745 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1746 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1747 ieee80211_mesh_root_setup(ifmsh);
1748 }
1749 conf->dot11MeshGateAnnouncementProtocol =
1750 nconf->dot11MeshGateAnnouncementProtocol;
1751 }
1752 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1753 conf->dot11MeshHWMPRannInterval =
1754 nconf->dot11MeshHWMPRannInterval;
1755 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1756 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1757 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1758 /* our RSSI threshold implementation is supported only for
1759 * devices that report signal in dBm.
1760 */
1761 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1762 return -ENOTSUPP;
1763 conf->rssi_threshold = nconf->rssi_threshold;
1764 }
1765 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1766 conf->ht_opmode = nconf->ht_opmode;
1767 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1768 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1769 }
1770 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1771 conf->dot11MeshHWMPactivePathToRootTimeout =
1772 nconf->dot11MeshHWMPactivePathToRootTimeout;
1773 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1774 conf->dot11MeshHWMProotInterval =
1775 nconf->dot11MeshHWMProotInterval;
1776 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1777 conf->dot11MeshHWMPconfirmationInterval =
1778 nconf->dot11MeshHWMPconfirmationInterval;
1779 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1780 conf->power_mode = nconf->power_mode;
1781 ieee80211_mps_local_status_update(sdata);
1782 }
1783 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1784 conf->dot11MeshAwakeWindowDuration =
1785 nconf->dot11MeshAwakeWindowDuration;
1786 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1787 conf->plink_timeout = nconf->plink_timeout;
1788 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1789 return 0;
1790 }
1791
1792 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1793 const struct mesh_config *conf,
1794 const struct mesh_setup *setup)
1795 {
1796 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1797 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1798 int err;
1799
1800 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1801 err = copy_mesh_setup(ifmsh, setup);
1802 if (err)
1803 return err;
1804
1805 /* can mesh use other SMPS modes? */
1806 sdata->smps_mode = IEEE80211_SMPS_OFF;
1807 sdata->needed_rx_chains = sdata->local->rx_chains;
1808
1809 mutex_lock(&sdata->local->mtx);
1810 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1811 IEEE80211_CHANCTX_SHARED);
1812 mutex_unlock(&sdata->local->mtx);
1813 if (err)
1814 return err;
1815
1816 return ieee80211_start_mesh(sdata);
1817 }
1818
1819 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1820 {
1821 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1822
1823 ieee80211_stop_mesh(sdata);
1824 mutex_lock(&sdata->local->mtx);
1825 ieee80211_vif_release_channel(sdata);
1826 mutex_unlock(&sdata->local->mtx);
1827
1828 return 0;
1829 }
1830 #endif
1831
1832 static int ieee80211_change_bss(struct wiphy *wiphy,
1833 struct net_device *dev,
1834 struct bss_parameters *params)
1835 {
1836 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1837 enum ieee80211_band band;
1838 u32 changed = 0;
1839
1840 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1841 return -ENOENT;
1842
1843 band = ieee80211_get_sdata_band(sdata);
1844
1845 if (params->use_cts_prot >= 0) {
1846 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1847 changed |= BSS_CHANGED_ERP_CTS_PROT;
1848 }
1849 if (params->use_short_preamble >= 0) {
1850 sdata->vif.bss_conf.use_short_preamble =
1851 params->use_short_preamble;
1852 changed |= BSS_CHANGED_ERP_PREAMBLE;
1853 }
1854
1855 if (!sdata->vif.bss_conf.use_short_slot &&
1856 band == IEEE80211_BAND_5GHZ) {
1857 sdata->vif.bss_conf.use_short_slot = true;
1858 changed |= BSS_CHANGED_ERP_SLOT;
1859 }
1860
1861 if (params->use_short_slot_time >= 0) {
1862 sdata->vif.bss_conf.use_short_slot =
1863 params->use_short_slot_time;
1864 changed |= BSS_CHANGED_ERP_SLOT;
1865 }
1866
1867 if (params->basic_rates) {
1868 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1869 wiphy->bands[band],
1870 params->basic_rates,
1871 params->basic_rates_len,
1872 &sdata->vif.bss_conf.basic_rates);
1873 changed |= BSS_CHANGED_BASIC_RATES;
1874 }
1875
1876 if (params->ap_isolate >= 0) {
1877 if (params->ap_isolate)
1878 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1879 else
1880 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1881 }
1882
1883 if (params->ht_opmode >= 0) {
1884 sdata->vif.bss_conf.ht_operation_mode =
1885 (u16) params->ht_opmode;
1886 changed |= BSS_CHANGED_HT;
1887 }
1888
1889 if (params->p2p_ctwindow >= 0) {
1890 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1891 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1892 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1893 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1894 changed |= BSS_CHANGED_P2P_PS;
1895 }
1896
1897 if (params->p2p_opp_ps > 0) {
1898 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1899 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1900 changed |= BSS_CHANGED_P2P_PS;
1901 } else if (params->p2p_opp_ps == 0) {
1902 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1903 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1904 changed |= BSS_CHANGED_P2P_PS;
1905 }
1906
1907 ieee80211_bss_info_change_notify(sdata, changed);
1908
1909 return 0;
1910 }
1911
1912 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1913 struct net_device *dev,
1914 struct ieee80211_txq_params *params)
1915 {
1916 struct ieee80211_local *local = wiphy_priv(wiphy);
1917 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1918 struct ieee80211_tx_queue_params p;
1919
1920 if (!local->ops->conf_tx)
1921 return -EOPNOTSUPP;
1922
1923 if (local->hw.queues < IEEE80211_NUM_ACS)
1924 return -EOPNOTSUPP;
1925
1926 memset(&p, 0, sizeof(p));
1927 p.aifs = params->aifs;
1928 p.cw_max = params->cwmax;
1929 p.cw_min = params->cwmin;
1930 p.txop = params->txop;
1931
1932 /*
1933 * Setting tx queue params disables u-apsd because it's only
1934 * called in master mode.
1935 */
1936 p.uapsd = false;
1937
1938 sdata->tx_conf[params->ac] = p;
1939 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1940 wiphy_debug(local->hw.wiphy,
1941 "failed to set TX queue parameters for AC %d\n",
1942 params->ac);
1943 return -EINVAL;
1944 }
1945
1946 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1947
1948 return 0;
1949 }
1950
1951 #ifdef CONFIG_PM
1952 static int ieee80211_suspend(struct wiphy *wiphy,
1953 struct cfg80211_wowlan *wowlan)
1954 {
1955 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1956 }
1957
1958 static int ieee80211_resume(struct wiphy *wiphy)
1959 {
1960 return __ieee80211_resume(wiphy_priv(wiphy));
1961 }
1962 #else
1963 #define ieee80211_suspend NULL
1964 #define ieee80211_resume NULL
1965 #endif
1966
1967 static int ieee80211_scan(struct wiphy *wiphy,
1968 struct cfg80211_scan_request *req)
1969 {
1970 struct ieee80211_sub_if_data *sdata;
1971
1972 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1973
1974 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1975 case NL80211_IFTYPE_STATION:
1976 case NL80211_IFTYPE_ADHOC:
1977 case NL80211_IFTYPE_MESH_POINT:
1978 case NL80211_IFTYPE_P2P_CLIENT:
1979 case NL80211_IFTYPE_P2P_DEVICE:
1980 break;
1981 case NL80211_IFTYPE_P2P_GO:
1982 if (sdata->local->ops->hw_scan)
1983 break;
1984 /*
1985 * FIXME: implement NoA while scanning in software,
1986 * for now fall through to allow scanning only when
1987 * beaconing hasn't been configured yet
1988 */
1989 case NL80211_IFTYPE_AP:
1990 /*
1991 * If the scan has been forced (and the driver supports
1992 * forcing), don't care about being beaconing already.
1993 * This will create problems to the attached stations (e.g. all
1994 * the frames sent while scanning on other channel will be
1995 * lost)
1996 */
1997 if (sdata->u.ap.beacon &&
1998 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1999 !(req->flags & NL80211_SCAN_FLAG_AP)))
2000 return -EOPNOTSUPP;
2001 break;
2002 default:
2003 return -EOPNOTSUPP;
2004 }
2005
2006 return ieee80211_request_scan(sdata, req);
2007 }
2008
2009 static int
2010 ieee80211_sched_scan_start(struct wiphy *wiphy,
2011 struct net_device *dev,
2012 struct cfg80211_sched_scan_request *req)
2013 {
2014 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2015
2016 if (!sdata->local->ops->sched_scan_start)
2017 return -EOPNOTSUPP;
2018
2019 return ieee80211_request_sched_scan_start(sdata, req);
2020 }
2021
2022 static int
2023 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2024 {
2025 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2026
2027 if (!sdata->local->ops->sched_scan_stop)
2028 return -EOPNOTSUPP;
2029
2030 return ieee80211_request_sched_scan_stop(sdata);
2031 }
2032
2033 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2034 struct cfg80211_auth_request *req)
2035 {
2036 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2037 }
2038
2039 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2040 struct cfg80211_assoc_request *req)
2041 {
2042 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2043 }
2044
2045 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2046 struct cfg80211_deauth_request *req)
2047 {
2048 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2049 }
2050
2051 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2052 struct cfg80211_disassoc_request *req)
2053 {
2054 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2055 }
2056
2057 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2058 struct cfg80211_ibss_params *params)
2059 {
2060 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2061 }
2062
2063 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2064 {
2065 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2066 }
2067
2068 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2069 struct ocb_setup *setup)
2070 {
2071 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2072 }
2073
2074 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2075 {
2076 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2077 }
2078
2079 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2080 int rate[IEEE80211_NUM_BANDS])
2081 {
2082 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2083
2084 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2085 sizeof(int) * IEEE80211_NUM_BANDS);
2086
2087 return 0;
2088 }
2089
2090 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2091 {
2092 struct ieee80211_local *local = wiphy_priv(wiphy);
2093 int err;
2094
2095 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2096 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2097
2098 if (err)
2099 return err;
2100 }
2101
2102 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2103 (changed & WIPHY_PARAM_DYN_ACK)) {
2104 s16 coverage_class;
2105
2106 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2107 wiphy->coverage_class : -1;
2108 err = drv_set_coverage_class(local, coverage_class);
2109
2110 if (err)
2111 return err;
2112 }
2113
2114 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2115 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2116
2117 if (err)
2118 return err;
2119 }
2120
2121 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2122 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2123 return -EINVAL;
2124 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2125 }
2126 if (changed & WIPHY_PARAM_RETRY_LONG) {
2127 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2128 return -EINVAL;
2129 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2130 }
2131 if (changed &
2132 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2133 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2134
2135 return 0;
2136 }
2137
2138 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2139 struct wireless_dev *wdev,
2140 enum nl80211_tx_power_setting type, int mbm)
2141 {
2142 struct ieee80211_local *local = wiphy_priv(wiphy);
2143 struct ieee80211_sub_if_data *sdata;
2144 enum nl80211_tx_power_setting txp_type = type;
2145 bool update_txp_type = false;
2146
2147 if (wdev) {
2148 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2149
2150 switch (type) {
2151 case NL80211_TX_POWER_AUTOMATIC:
2152 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2153 txp_type = NL80211_TX_POWER_LIMITED;
2154 break;
2155 case NL80211_TX_POWER_LIMITED:
2156 case NL80211_TX_POWER_FIXED:
2157 if (mbm < 0 || (mbm % 100))
2158 return -EOPNOTSUPP;
2159 sdata->user_power_level = MBM_TO_DBM(mbm);
2160 break;
2161 }
2162
2163 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2164 update_txp_type = true;
2165 sdata->vif.bss_conf.txpower_type = txp_type;
2166 }
2167
2168 ieee80211_recalc_txpower(sdata, update_txp_type);
2169
2170 return 0;
2171 }
2172
2173 switch (type) {
2174 case NL80211_TX_POWER_AUTOMATIC:
2175 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2176 txp_type = NL80211_TX_POWER_LIMITED;
2177 break;
2178 case NL80211_TX_POWER_LIMITED:
2179 case NL80211_TX_POWER_FIXED:
2180 if (mbm < 0 || (mbm % 100))
2181 return -EOPNOTSUPP;
2182 local->user_power_level = MBM_TO_DBM(mbm);
2183 break;
2184 }
2185
2186 mutex_lock(&local->iflist_mtx);
2187 list_for_each_entry(sdata, &local->interfaces, list) {
2188 sdata->user_power_level = local->user_power_level;
2189 if (txp_type != sdata->vif.bss_conf.txpower_type)
2190 update_txp_type = true;
2191 sdata->vif.bss_conf.txpower_type = txp_type;
2192 }
2193 list_for_each_entry(sdata, &local->interfaces, list)
2194 ieee80211_recalc_txpower(sdata, update_txp_type);
2195 mutex_unlock(&local->iflist_mtx);
2196
2197 return 0;
2198 }
2199
2200 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2201 struct wireless_dev *wdev,
2202 int *dbm)
2203 {
2204 struct ieee80211_local *local = wiphy_priv(wiphy);
2205 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2206
2207 if (local->ops->get_txpower)
2208 return drv_get_txpower(local, sdata, dbm);
2209
2210 if (!local->use_chanctx)
2211 *dbm = local->hw.conf.power_level;
2212 else
2213 *dbm = sdata->vif.bss_conf.txpower;
2214
2215 return 0;
2216 }
2217
2218 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2219 const u8 *addr)
2220 {
2221 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2222
2223 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2224
2225 return 0;
2226 }
2227
2228 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2229 {
2230 struct ieee80211_local *local = wiphy_priv(wiphy);
2231
2232 drv_rfkill_poll(local);
2233 }
2234
2235 #ifdef CONFIG_NL80211_TESTMODE
2236 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2237 struct wireless_dev *wdev,
2238 void *data, int len)
2239 {
2240 struct ieee80211_local *local = wiphy_priv(wiphy);
2241 struct ieee80211_vif *vif = NULL;
2242
2243 if (!local->ops->testmode_cmd)
2244 return -EOPNOTSUPP;
2245
2246 if (wdev) {
2247 struct ieee80211_sub_if_data *sdata;
2248
2249 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2250 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2251 vif = &sdata->vif;
2252 }
2253
2254 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2255 }
2256
2257 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2258 struct sk_buff *skb,
2259 struct netlink_callback *cb,
2260 void *data, int len)
2261 {
2262 struct ieee80211_local *local = wiphy_priv(wiphy);
2263
2264 if (!local->ops->testmode_dump)
2265 return -EOPNOTSUPP;
2266
2267 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2268 }
2269 #endif
2270
2271 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2272 enum ieee80211_smps_mode smps_mode)
2273 {
2274 struct sta_info *sta;
2275 enum ieee80211_smps_mode old_req;
2276 int i;
2277
2278 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2279 return -EINVAL;
2280
2281 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2282 return 0;
2283
2284 old_req = sdata->u.ap.req_smps;
2285 sdata->u.ap.req_smps = smps_mode;
2286
2287 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2288 if (old_req == smps_mode ||
2289 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2290 return 0;
2291
2292 /* If no associated stations, there's no need to do anything */
2293 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2294 sdata->smps_mode = smps_mode;
2295 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2296 return 0;
2297 }
2298
2299 ht_dbg(sdata,
2300 "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2301 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2302
2303 mutex_lock(&sdata->local->sta_mtx);
2304 for (i = 0; i < STA_HASH_SIZE; i++) {
2305 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2306 lockdep_is_held(&sdata->local->sta_mtx));
2307 sta;
2308 sta = rcu_dereference_protected(sta->hnext,
2309 lockdep_is_held(&sdata->local->sta_mtx))) {
2310 /*
2311 * Only stations associated to our AP and
2312 * associated VLANs
2313 */
2314 if (sta->sdata->bss != &sdata->u.ap)
2315 continue;
2316
2317 /* This station doesn't support MIMO - skip it */
2318 if (sta_info_tx_streams(sta) == 1)
2319 continue;
2320
2321 /*
2322 * Don't wake up a STA just to send the action frame
2323 * unless we are getting more restrictive.
2324 */
2325 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2326 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2327 smps_mode)) {
2328 ht_dbg(sdata,
2329 "Won't send SMPS to sleeping STA %pM\n",
2330 sta->sta.addr);
2331 continue;
2332 }
2333
2334 /*
2335 * If the STA is not authorized, wait until it gets
2336 * authorized and the action frame will be sent then.
2337 */
2338 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2339 continue;
2340
2341 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2342 ieee80211_send_smps_action(sdata, smps_mode,
2343 sta->sta.addr,
2344 sdata->vif.bss_conf.bssid);
2345 }
2346 }
2347 mutex_unlock(&sdata->local->sta_mtx);
2348
2349 sdata->smps_mode = smps_mode;
2350 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2351
2352 return 0;
2353 }
2354
2355 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2356 enum ieee80211_smps_mode smps_mode)
2357 {
2358 const u8 *ap;
2359 enum ieee80211_smps_mode old_req;
2360 int err;
2361
2362 lockdep_assert_held(&sdata->wdev.mtx);
2363
2364 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2365 return -EINVAL;
2366
2367 old_req = sdata->u.mgd.req_smps;
2368 sdata->u.mgd.req_smps = smps_mode;
2369
2370 if (old_req == smps_mode &&
2371 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2372 return 0;
2373
2374 /*
2375 * If not associated, or current association is not an HT
2376 * association, there's no need to do anything, just store
2377 * the new value until we associate.
2378 */
2379 if (!sdata->u.mgd.associated ||
2380 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2381 return 0;
2382
2383 ap = sdata->u.mgd.associated->bssid;
2384
2385 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2386 if (sdata->u.mgd.powersave)
2387 smps_mode = IEEE80211_SMPS_DYNAMIC;
2388 else
2389 smps_mode = IEEE80211_SMPS_OFF;
2390 }
2391
2392 /* send SM PS frame to AP */
2393 err = ieee80211_send_smps_action(sdata, smps_mode,
2394 ap, ap);
2395 if (err)
2396 sdata->u.mgd.req_smps = old_req;
2397
2398 return err;
2399 }
2400
2401 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2402 bool enabled, int timeout)
2403 {
2404 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2405 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2406
2407 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2408 return -EOPNOTSUPP;
2409
2410 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2411 return -EOPNOTSUPP;
2412
2413 if (enabled == sdata->u.mgd.powersave &&
2414 timeout == local->dynamic_ps_forced_timeout)
2415 return 0;
2416
2417 sdata->u.mgd.powersave = enabled;
2418 local->dynamic_ps_forced_timeout = timeout;
2419
2420 /* no change, but if automatic follow powersave */
2421 sdata_lock(sdata);
2422 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2423 sdata_unlock(sdata);
2424
2425 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2426 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2427
2428 ieee80211_recalc_ps(local, -1);
2429 ieee80211_recalc_ps_vif(sdata);
2430
2431 return 0;
2432 }
2433
2434 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2435 struct net_device *dev,
2436 s32 rssi_thold, u32 rssi_hyst)
2437 {
2438 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2439 struct ieee80211_vif *vif = &sdata->vif;
2440 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2441
2442 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2443 rssi_hyst == bss_conf->cqm_rssi_hyst)
2444 return 0;
2445
2446 bss_conf->cqm_rssi_thold = rssi_thold;
2447 bss_conf->cqm_rssi_hyst = rssi_hyst;
2448
2449 /* tell the driver upon association, unless already associated */
2450 if (sdata->u.mgd.associated &&
2451 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2452 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2453
2454 return 0;
2455 }
2456
2457 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2458 struct net_device *dev,
2459 const u8 *addr,
2460 const struct cfg80211_bitrate_mask *mask)
2461 {
2462 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2463 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2464 int i, ret;
2465
2466 if (!ieee80211_sdata_running(sdata))
2467 return -ENETDOWN;
2468
2469 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2470 ret = drv_set_bitrate_mask(local, sdata, mask);
2471 if (ret)
2472 return ret;
2473 }
2474
2475 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2476 struct ieee80211_supported_band *sband = wiphy->bands[i];
2477 int j;
2478
2479 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2480 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2481 sizeof(mask->control[i].ht_mcs));
2482
2483 sdata->rc_has_mcs_mask[i] = false;
2484 if (!sband)
2485 continue;
2486
2487 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2488 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2489 sdata->rc_has_mcs_mask[i] = true;
2490 break;
2491 }
2492 }
2493
2494 return 0;
2495 }
2496
2497 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2498 struct ieee80211_roc_work *new_roc,
2499 struct ieee80211_roc_work *cur_roc)
2500 {
2501 unsigned long j = jiffies;
2502 unsigned long cur_roc_end = cur_roc->hw_start_time +
2503 msecs_to_jiffies(cur_roc->duration);
2504 struct ieee80211_roc_work *next_roc;
2505 int new_dur;
2506
2507 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2508 return false;
2509
2510 if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
2511 return false;
2512
2513 ieee80211_handle_roc_started(new_roc);
2514
2515 new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);
2516
2517 /* cur_roc is long enough - add new_roc to the dependents list. */
2518 if (new_dur <= 0) {
2519 list_add_tail(&new_roc->list, &cur_roc->dependents);
2520 return true;
2521 }
2522
2523 new_roc->duration = new_dur;
2524
2525 /*
2526 * if cur_roc was already coalesced before, we might
2527 * want to extend the next roc instead of adding
2528 * a new one.
2529 */
2530 next_roc = list_entry(cur_roc->list.next,
2531 struct ieee80211_roc_work, list);
2532 if (&next_roc->list != &local->roc_list &&
2533 next_roc->chan == new_roc->chan &&
2534 next_roc->sdata == new_roc->sdata &&
2535 !WARN_ON(next_roc->started)) {
2536 list_add_tail(&new_roc->list, &next_roc->dependents);
2537 next_roc->duration = max(next_roc->duration,
2538 new_roc->duration);
2539 next_roc->type = max(next_roc->type, new_roc->type);
2540 return true;
2541 }
2542
2543 /* add right after cur_roc */
2544 list_add(&new_roc->list, &cur_roc->list);
2545
2546 return true;
2547 }
2548
2549 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2550 struct ieee80211_sub_if_data *sdata,
2551 struct ieee80211_channel *channel,
2552 unsigned int duration, u64 *cookie,
2553 struct sk_buff *txskb,
2554 enum ieee80211_roc_type type)
2555 {
2556 struct ieee80211_roc_work *roc, *tmp;
2557 bool queued = false;
2558 int ret;
2559
2560 lockdep_assert_held(&local->mtx);
2561
2562 if (local->use_chanctx && !local->ops->remain_on_channel)
2563 return -EOPNOTSUPP;
2564
2565 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2566 if (!roc)
2567 return -ENOMEM;
2568
2569 /*
2570 * If the duration is zero, then the driver
2571 * wouldn't actually do anything. Set it to
2572 * 10 for now.
2573 *
2574 * TODO: cancel the off-channel operation
2575 * when we get the SKB's TX status and
2576 * the wait time was zero before.
2577 */
2578 if (!duration)
2579 duration = 10;
2580
2581 roc->chan = channel;
2582 roc->duration = duration;
2583 roc->req_duration = duration;
2584 roc->frame = txskb;
2585 roc->type = type;
2586 roc->mgmt_tx_cookie = (unsigned long)txskb;
2587 roc->sdata = sdata;
2588 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2589 INIT_LIST_HEAD(&roc->dependents);
2590
2591 /*
2592 * cookie is either the roc cookie (for normal roc)
2593 * or the SKB (for mgmt TX)
2594 */
2595 if (!txskb) {
2596 /* local->mtx protects this */
2597 local->roc_cookie_counter++;
2598 roc->cookie = local->roc_cookie_counter;
2599 /* wow, you wrapped 64 bits ... more likely a bug */
2600 if (WARN_ON(roc->cookie == 0)) {
2601 roc->cookie = 1;
2602 local->roc_cookie_counter++;
2603 }
2604 *cookie = roc->cookie;
2605 } else {
2606 *cookie = (unsigned long)txskb;
2607 }
2608
2609 /* if there's one pending or we're scanning, queue this one */
2610 if (!list_empty(&local->roc_list) ||
2611 local->scanning || ieee80211_is_radar_required(local))
2612 goto out_check_combine;
2613
2614 /* if not HW assist, just queue & schedule work */
2615 if (!local->ops->remain_on_channel) {
2616 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2617 goto out_queue;
2618 }
2619
2620 /* otherwise actually kick it off here (for error handling) */
2621
2622 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2623 if (ret) {
2624 kfree(roc);
2625 return ret;
2626 }
2627
2628 roc->started = true;
2629 goto out_queue;
2630
2631 out_check_combine:
2632 list_for_each_entry(tmp, &local->roc_list, list) {
2633 if (tmp->chan != channel || tmp->sdata != sdata)
2634 continue;
2635
2636 /*
2637 * Extend this ROC if possible:
2638 *
2639 * If it hasn't started yet, just increase the duration
2640 * and add the new one to the list of dependents.
2641 * If the type of the new ROC has higher priority, modify the
2642 * type of the previous one to match that of the new one.
2643 */
2644 if (!tmp->started) {
2645 list_add_tail(&roc->list, &tmp->dependents);
2646 tmp->duration = max(tmp->duration, roc->duration);
2647 tmp->type = max(tmp->type, roc->type);
2648 queued = true;
2649 break;
2650 }
2651
2652 /* If it has already started, it's more difficult ... */
2653 if (local->ops->remain_on_channel) {
2654 /*
2655 * In the offloaded ROC case, if it hasn't begun, add
2656 * this new one to the dependent list to be handled
2657 * when the master one begins. If it has begun,
2658 * check that there's still a minimum time left and
2659 * if so, start this one, transmitting the frame, but
2660 * add it to the list directly after this one with
2661 * a reduced time so we'll ask the driver to execute
2662 * it right after finishing the previous one, in the
2663 * hope that it'll also be executed right afterwards,
2664 * effectively extending the old one.
2665 * If there's no minimum time left, just add it to the
2666 * normal list.
2667 * TODO: the ROC type is ignored here, assuming that it
2668 * is better to immediately use the current ROC.
2669 */
2670 if (!tmp->hw_begun) {
2671 list_add_tail(&roc->list, &tmp->dependents);
2672 queued = true;
2673 break;
2674 }
2675
2676 if (ieee80211_coalesce_started_roc(local, roc, tmp))
2677 queued = true;
2678 } else if (del_timer_sync(&tmp->work.timer)) {
2679 unsigned long new_end;
2680
2681 /*
2682 * In the software ROC case, cancel the timer, if
2683 * that fails then the finish work is already
2684 * queued/pending and thus we queue the new ROC
2685 * normally, if that succeeds then we can extend
2686 * the timer duration and TX the frame (if any.)
2687 */
2688
2689 list_add_tail(&roc->list, &tmp->dependents);
2690 queued = true;
2691
2692 new_end = jiffies + msecs_to_jiffies(roc->duration);
2693
2694 /* ok, it was started & we canceled timer */
2695 if (time_after(new_end, tmp->work.timer.expires))
2696 mod_timer(&tmp->work.timer, new_end);
2697 else
2698 add_timer(&tmp->work.timer);
2699
2700 ieee80211_handle_roc_started(roc);
2701 }
2702 break;
2703 }
2704
2705 out_queue:
2706 if (!queued)
2707 list_add_tail(&roc->list, &local->roc_list);
2708
2709 return 0;
2710 }
2711
2712 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2713 struct wireless_dev *wdev,
2714 struct ieee80211_channel *chan,
2715 unsigned int duration,
2716 u64 *cookie)
2717 {
2718 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2719 struct ieee80211_local *local = sdata->local;
2720 int ret;
2721
2722 mutex_lock(&local->mtx);
2723 ret = ieee80211_start_roc_work(local, sdata, chan,
2724 duration, cookie, NULL,
2725 IEEE80211_ROC_TYPE_NORMAL);
2726 mutex_unlock(&local->mtx);
2727
2728 return ret;
2729 }
2730
2731 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2732 u64 cookie, bool mgmt_tx)
2733 {
2734 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2735 int ret;
2736
2737 mutex_lock(&local->mtx);
2738 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2739 struct ieee80211_roc_work *dep, *tmp2;
2740
2741 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2742 if (!mgmt_tx && dep->cookie != cookie)
2743 continue;
2744 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2745 continue;
2746 /* found dependent item -- just remove it */
2747 list_del(&dep->list);
2748 mutex_unlock(&local->mtx);
2749
2750 ieee80211_roc_notify_destroy(dep, true);
2751 return 0;
2752 }
2753
2754 if (!mgmt_tx && roc->cookie != cookie)
2755 continue;
2756 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2757 continue;
2758
2759 found = roc;
2760 break;
2761 }
2762
2763 if (!found) {
2764 mutex_unlock(&local->mtx);
2765 return -ENOENT;
2766 }
2767
2768 /*
2769 * We found the item to cancel, so do that. Note that it
2770 * may have dependents, which we also cancel (and send
2771 * the expired signal for.) Not doing so would be quite
2772 * tricky here, but we may need to fix it later.
2773 */
2774
2775 if (local->ops->remain_on_channel) {
2776 if (found->started) {
2777 ret = drv_cancel_remain_on_channel(local);
2778 if (WARN_ON_ONCE(ret)) {
2779 mutex_unlock(&local->mtx);
2780 return ret;
2781 }
2782 }
2783
2784 list_del(&found->list);
2785
2786 if (found->started)
2787 ieee80211_start_next_roc(local);
2788 mutex_unlock(&local->mtx);
2789
2790 ieee80211_roc_notify_destroy(found, true);
2791 } else {
2792 /* work may be pending so use it all the time */
2793 found->abort = true;
2794 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2795
2796 mutex_unlock(&local->mtx);
2797
2798 /* work will clean up etc */
2799 flush_delayed_work(&found->work);
2800 WARN_ON(!found->to_be_freed);
2801 kfree(found);
2802 }
2803
2804 return 0;
2805 }
2806
2807 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2808 struct wireless_dev *wdev,
2809 u64 cookie)
2810 {
2811 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2812 struct ieee80211_local *local = sdata->local;
2813
2814 return ieee80211_cancel_roc(local, cookie, false);
2815 }
2816
2817 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2818 struct net_device *dev,
2819 struct cfg80211_chan_def *chandef,
2820 u32 cac_time_ms)
2821 {
2822 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2823 struct ieee80211_local *local = sdata->local;
2824 int err;
2825
2826 mutex_lock(&local->mtx);
2827 if (!list_empty(&local->roc_list) || local->scanning) {
2828 err = -EBUSY;
2829 goto out_unlock;
2830 }
2831
2832 /* whatever, but channel contexts should not complain about that one */
2833 sdata->smps_mode = IEEE80211_SMPS_OFF;
2834 sdata->needed_rx_chains = local->rx_chains;
2835
2836 err = ieee80211_vif_use_channel(sdata, chandef,
2837 IEEE80211_CHANCTX_SHARED);
2838 if (err)
2839 goto out_unlock;
2840
2841 ieee80211_queue_delayed_work(&sdata->local->hw,
2842 &sdata->dfs_cac_timer_work,
2843 msecs_to_jiffies(cac_time_ms));
2844
2845 out_unlock:
2846 mutex_unlock(&local->mtx);
2847 return err;
2848 }
2849
2850 static struct cfg80211_beacon_data *
2851 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2852 {
2853 struct cfg80211_beacon_data *new_beacon;
2854 u8 *pos;
2855 int len;
2856
2857 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2858 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2859 beacon->probe_resp_len;
2860
2861 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2862 if (!new_beacon)
2863 return NULL;
2864
2865 pos = (u8 *)(new_beacon + 1);
2866 if (beacon->head_len) {
2867 new_beacon->head_len = beacon->head_len;
2868 new_beacon->head = pos;
2869 memcpy(pos, beacon->head, beacon->head_len);
2870 pos += beacon->head_len;
2871 }
2872 if (beacon->tail_len) {
2873 new_beacon->tail_len = beacon->tail_len;
2874 new_beacon->tail = pos;
2875 memcpy(pos, beacon->tail, beacon->tail_len);
2876 pos += beacon->tail_len;
2877 }
2878 if (beacon->beacon_ies_len) {
2879 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2880 new_beacon->beacon_ies = pos;
2881 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2882 pos += beacon->beacon_ies_len;
2883 }
2884 if (beacon->proberesp_ies_len) {
2885 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2886 new_beacon->proberesp_ies = pos;
2887 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2888 pos += beacon->proberesp_ies_len;
2889 }
2890 if (beacon->assocresp_ies_len) {
2891 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2892 new_beacon->assocresp_ies = pos;
2893 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2894 pos += beacon->assocresp_ies_len;
2895 }
2896 if (beacon->probe_resp_len) {
2897 new_beacon->probe_resp_len = beacon->probe_resp_len;
2898 beacon->probe_resp = pos;
2899 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2900 pos += beacon->probe_resp_len;
2901 }
2902
2903 return new_beacon;
2904 }
2905
2906 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2907 {
2908 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2909
2910 ieee80211_queue_work(&sdata->local->hw,
2911 &sdata->csa_finalize_work);
2912 }
2913 EXPORT_SYMBOL(ieee80211_csa_finish);
2914
2915 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2916 u32 *changed)
2917 {
2918 int err;
2919
2920 switch (sdata->vif.type) {
2921 case NL80211_IFTYPE_AP:
2922 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2923 NULL);
2924 kfree(sdata->u.ap.next_beacon);
2925 sdata->u.ap.next_beacon = NULL;
2926
2927 if (err < 0)
2928 return err;
2929 *changed |= err;
2930 break;
2931 case NL80211_IFTYPE_ADHOC:
2932 err = ieee80211_ibss_finish_csa(sdata);
2933 if (err < 0)
2934 return err;
2935 *changed |= err;
2936 break;
2937 #ifdef CONFIG_MAC80211_MESH
2938 case NL80211_IFTYPE_MESH_POINT:
2939 err = ieee80211_mesh_finish_csa(sdata);
2940 if (err < 0)
2941 return err;
2942 *changed |= err;
2943 break;
2944 #endif
2945 default:
2946 WARN_ON(1);
2947 return -EINVAL;
2948 }
2949
2950 return 0;
2951 }
2952
2953 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2954 {
2955 struct ieee80211_local *local = sdata->local;
2956 u32 changed = 0;
2957 int err;
2958
2959 sdata_assert_lock(sdata);
2960 lockdep_assert_held(&local->mtx);
2961 lockdep_assert_held(&local->chanctx_mtx);
2962
2963 /*
2964 * using reservation isn't immediate as it may be deferred until later
2965 * with multi-vif. once reservation is complete it will re-schedule the
2966 * work with no reserved_chanctx so verify chandef to check if it
2967 * completed successfully
2968 */
2969
2970 if (sdata->reserved_chanctx) {
2971 /*
2972 * with multi-vif csa driver may call ieee80211_csa_finish()
2973 * many times while waiting for other interfaces to use their
2974 * reservations
2975 */
2976 if (sdata->reserved_ready)
2977 return 0;
2978
2979 return ieee80211_vif_use_reserved_context(sdata);
2980 }
2981
2982 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2983 &sdata->csa_chandef))
2984 return -EINVAL;
2985
2986 sdata->vif.csa_active = false;
2987
2988 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2989 if (err)
2990 return err;
2991
2992 ieee80211_bss_info_change_notify(sdata, changed);
2993
2994 if (sdata->csa_block_tx) {
2995 ieee80211_wake_vif_queues(local, sdata,
2996 IEEE80211_QUEUE_STOP_REASON_CSA);
2997 sdata->csa_block_tx = false;
2998 }
2999
3000 err = drv_post_channel_switch(sdata);
3001 if (err)
3002 return err;
3003
3004 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3005
3006 return 0;
3007 }
3008
3009 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3010 {
3011 if (__ieee80211_csa_finalize(sdata)) {
3012 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3013 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3014 GFP_KERNEL);
3015 }
3016 }
3017
3018 void ieee80211_csa_finalize_work(struct work_struct *work)
3019 {
3020 struct ieee80211_sub_if_data *sdata =
3021 container_of(work, struct ieee80211_sub_if_data,
3022 csa_finalize_work);
3023 struct ieee80211_local *local = sdata->local;
3024
3025 sdata_lock(sdata);
3026 mutex_lock(&local->mtx);
3027 mutex_lock(&local->chanctx_mtx);
3028
3029 /* AP might have been stopped while waiting for the lock. */
3030 if (!sdata->vif.csa_active)
3031 goto unlock;
3032
3033 if (!ieee80211_sdata_running(sdata))
3034 goto unlock;
3035
3036 ieee80211_csa_finalize(sdata);
3037
3038 unlock:
3039 mutex_unlock(&local->chanctx_mtx);
3040 mutex_unlock(&local->mtx);
3041 sdata_unlock(sdata);
3042 }
3043
3044 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3045 struct cfg80211_csa_settings *params,
3046 u32 *changed)
3047 {
3048 struct ieee80211_csa_settings csa = {};
3049 int err;
3050
3051 switch (sdata->vif.type) {
3052 case NL80211_IFTYPE_AP:
3053 sdata->u.ap.next_beacon =
3054 cfg80211_beacon_dup(&params->beacon_after);
3055 if (!sdata->u.ap.next_beacon)
3056 return -ENOMEM;
3057
3058 /*
3059 * With a count of 0, we don't have to wait for any
3060 * TBTT before switching, so complete the CSA
3061 * immediately. In theory, with a count == 1 we
3062 * should delay the switch until just before the next
3063 * TBTT, but that would complicate things so we switch
3064 * immediately too. If we would delay the switch
3065 * until the next TBTT, we would have to set the probe
3066 * response here.
3067 *
3068 * TODO: A channel switch with count <= 1 without
3069 * sending a CSA action frame is kind of useless,
3070 * because the clients won't know we're changing
3071 * channels. The action frame must be implemented
3072 * either here or in the userspace.
3073 */
3074 if (params->count <= 1)
3075 break;
3076
3077 if ((params->n_counter_offsets_beacon >
3078 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3079 (params->n_counter_offsets_presp >
3080 IEEE80211_MAX_CSA_COUNTERS_NUM))
3081 return -EINVAL;
3082
3083 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3084 csa.counter_offsets_presp = params->counter_offsets_presp;
3085 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3086 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3087 csa.count = params->count;
3088
3089 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3090 if (err < 0) {
3091 kfree(sdata->u.ap.next_beacon);
3092 return err;
3093 }
3094 *changed |= err;
3095
3096 break;
3097 case NL80211_IFTYPE_ADHOC:
3098 if (!sdata->vif.bss_conf.ibss_joined)
3099 return -EINVAL;
3100
3101 if (params->chandef.width != sdata->u.ibss.chandef.width)
3102 return -EINVAL;
3103
3104 switch (params->chandef.width) {
3105 case NL80211_CHAN_WIDTH_40:
3106 if (cfg80211_get_chandef_type(&params->chandef) !=
3107 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3108 return -EINVAL;
3109 case NL80211_CHAN_WIDTH_5:
3110 case NL80211_CHAN_WIDTH_10:
3111 case NL80211_CHAN_WIDTH_20_NOHT:
3112 case NL80211_CHAN_WIDTH_20:
3113 break;
3114 default:
3115 return -EINVAL;
3116 }
3117
3118 /* changes into another band are not supported */
3119 if (sdata->u.ibss.chandef.chan->band !=
3120 params->chandef.chan->band)
3121 return -EINVAL;
3122
3123 /* see comments in the NL80211_IFTYPE_AP block */
3124 if (params->count > 1) {
3125 err = ieee80211_ibss_csa_beacon(sdata, params);
3126 if (err < 0)
3127 return err;
3128 *changed |= err;
3129 }
3130
3131 ieee80211_send_action_csa(sdata, params);
3132
3133 break;
3134 #ifdef CONFIG_MAC80211_MESH
3135 case NL80211_IFTYPE_MESH_POINT: {
3136 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3137
3138 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3139 return -EINVAL;
3140
3141 /* changes into another band are not supported */
3142 if (sdata->vif.bss_conf.chandef.chan->band !=
3143 params->chandef.chan->band)
3144 return -EINVAL;
3145
3146 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3147 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3148 if (!ifmsh->pre_value)
3149 ifmsh->pre_value = 1;
3150 else
3151 ifmsh->pre_value++;
3152 }
3153
3154 /* see comments in the NL80211_IFTYPE_AP block */
3155 if (params->count > 1) {
3156 err = ieee80211_mesh_csa_beacon(sdata, params);
3157 if (err < 0) {
3158 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3159 return err;
3160 }
3161 *changed |= err;
3162 }
3163
3164 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3165 ieee80211_send_action_csa(sdata, params);
3166
3167 break;
3168 }
3169 #endif
3170 default:
3171 return -EOPNOTSUPP;
3172 }
3173
3174 return 0;
3175 }
3176
3177 static int
3178 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3179 struct cfg80211_csa_settings *params)
3180 {
3181 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3182 struct ieee80211_local *local = sdata->local;
3183 struct ieee80211_channel_switch ch_switch;
3184 struct ieee80211_chanctx_conf *conf;
3185 struct ieee80211_chanctx *chanctx;
3186 u32 changed = 0;
3187 int err;
3188
3189 sdata_assert_lock(sdata);
3190 lockdep_assert_held(&local->mtx);
3191
3192 if (!list_empty(&local->roc_list) || local->scanning)
3193 return -EBUSY;
3194
3195 if (sdata->wdev.cac_started)
3196 return -EBUSY;
3197
3198 if (cfg80211_chandef_identical(&params->chandef,
3199 &sdata->vif.bss_conf.chandef))
3200 return -EINVAL;
3201
3202 /* don't allow another channel switch if one is already active. */
3203 if (sdata->vif.csa_active)
3204 return -EBUSY;
3205
3206 mutex_lock(&local->chanctx_mtx);
3207 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3208 lockdep_is_held(&local->chanctx_mtx));
3209 if (!conf) {
3210 err = -EBUSY;
3211 goto out;
3212 }
3213
3214 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3215 if (!chanctx) {
3216 err = -EBUSY;
3217 goto out;
3218 }
3219
3220 ch_switch.timestamp = 0;
3221 ch_switch.device_timestamp = 0;
3222 ch_switch.block_tx = params->block_tx;
3223 ch_switch.chandef = params->chandef;
3224 ch_switch.count = params->count;
3225
3226 err = drv_pre_channel_switch(sdata, &ch_switch);
3227 if (err)
3228 goto out;
3229
3230 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3231 chanctx->mode,
3232 params->radar_required);
3233 if (err)
3234 goto out;
3235
3236 /* if reservation is invalid then this will fail */
3237 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3238 if (err) {
3239 ieee80211_vif_unreserve_chanctx(sdata);
3240 goto out;
3241 }
3242
3243 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3244 if (err) {
3245 ieee80211_vif_unreserve_chanctx(sdata);
3246 goto out;
3247 }
3248
3249 sdata->csa_chandef = params->chandef;
3250 sdata->csa_block_tx = params->block_tx;
3251 sdata->vif.csa_active = true;
3252
3253 if (sdata->csa_block_tx)
3254 ieee80211_stop_vif_queues(local, sdata,
3255 IEEE80211_QUEUE_STOP_REASON_CSA);
3256
3257 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3258 params->count);
3259
3260 if (changed) {
3261 ieee80211_bss_info_change_notify(sdata, changed);
3262 drv_channel_switch_beacon(sdata, &params->chandef);
3263 } else {
3264 /* if the beacon didn't change, we can finalize immediately */
3265 ieee80211_csa_finalize(sdata);
3266 }
3267
3268 out:
3269 mutex_unlock(&local->chanctx_mtx);
3270 return err;
3271 }
3272
3273 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3274 struct cfg80211_csa_settings *params)
3275 {
3276 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3277 struct ieee80211_local *local = sdata->local;
3278 int err;
3279
3280 mutex_lock(&local->mtx);
3281 err = __ieee80211_channel_switch(wiphy, dev, params);
3282 mutex_unlock(&local->mtx);
3283
3284 return err;
3285 }
3286
3287 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3288 struct cfg80211_mgmt_tx_params *params,
3289 u64 *cookie)
3290 {
3291 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3292 struct ieee80211_local *local = sdata->local;
3293 struct sk_buff *skb;
3294 struct sta_info *sta;
3295 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3296 bool need_offchan = false;
3297 u32 flags;
3298 int ret;
3299 u8 *data;
3300
3301 if (params->dont_wait_for_ack)
3302 flags = IEEE80211_TX_CTL_NO_ACK;
3303 else
3304 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3305 IEEE80211_TX_CTL_REQ_TX_STATUS;
3306
3307 if (params->no_cck)
3308 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3309
3310 switch (sdata->vif.type) {
3311 case NL80211_IFTYPE_ADHOC:
3312 if (!sdata->vif.bss_conf.ibss_joined)
3313 need_offchan = true;
3314 /* fall through */
3315 #ifdef CONFIG_MAC80211_MESH
3316 case NL80211_IFTYPE_MESH_POINT:
3317 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3318 !sdata->u.mesh.mesh_id_len)
3319 need_offchan = true;
3320 /* fall through */
3321 #endif
3322 case NL80211_IFTYPE_AP:
3323 case NL80211_IFTYPE_AP_VLAN:
3324 case NL80211_IFTYPE_P2P_GO:
3325 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3326 !ieee80211_vif_is_mesh(&sdata->vif) &&
3327 !rcu_access_pointer(sdata->bss->beacon))
3328 need_offchan = true;
3329 if (!ieee80211_is_action(mgmt->frame_control) ||
3330 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3331 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3332 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3333 break;
3334 rcu_read_lock();
3335 sta = sta_info_get(sdata, mgmt->da);
3336 rcu_read_unlock();
3337 if (!sta)
3338 return -ENOLINK;
3339 break;
3340 case NL80211_IFTYPE_STATION:
3341 case NL80211_IFTYPE_P2P_CLIENT:
3342 if (!sdata->u.mgd.associated)
3343 need_offchan = true;
3344 break;
3345 case NL80211_IFTYPE_P2P_DEVICE:
3346 need_offchan = true;
3347 break;
3348 default:
3349 return -EOPNOTSUPP;
3350 }
3351
3352 /* configurations requiring offchan cannot work if no channel has been
3353 * specified
3354 */
3355 if (need_offchan && !params->chan)
3356 return -EINVAL;
3357
3358 mutex_lock(&local->mtx);
3359
3360 /* Check if the operating channel is the requested channel */
3361 if (!need_offchan) {
3362 struct ieee80211_chanctx_conf *chanctx_conf;
3363
3364 rcu_read_lock();
3365 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3366
3367 if (chanctx_conf) {
3368 need_offchan = params->chan &&
3369 (params->chan !=
3370 chanctx_conf->def.chan);
3371 } else if (!params->chan) {
3372 ret = -EINVAL;
3373 rcu_read_unlock();
3374 goto out_unlock;
3375 } else {
3376 need_offchan = true;
3377 }
3378 rcu_read_unlock();
3379 }
3380
3381 if (need_offchan && !params->offchan) {
3382 ret = -EBUSY;
3383 goto out_unlock;
3384 }
3385
3386 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3387 if (!skb) {
3388 ret = -ENOMEM;
3389 goto out_unlock;
3390 }
3391 skb_reserve(skb, local->hw.extra_tx_headroom);
3392
3393 data = skb_put(skb, params->len);
3394 memcpy(data, params->buf, params->len);
3395
3396 /* Update CSA counters */
3397 if (sdata->vif.csa_active &&
3398 (sdata->vif.type == NL80211_IFTYPE_AP ||
3399 sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3400 params->n_csa_offsets) {
3401 int i;
3402 struct beacon_data *beacon = NULL;
3403
3404 rcu_read_lock();
3405
3406 if (sdata->vif.type == NL80211_IFTYPE_AP)
3407 beacon = rcu_dereference(sdata->u.ap.beacon);
3408 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3409 beacon = rcu_dereference(sdata->u.ibss.presp);
3410 else if (ieee80211_vif_is_mesh(&sdata->vif))
3411 beacon = rcu_dereference(sdata->u.mesh.beacon);
3412
3413 if (beacon)
3414 for (i = 0; i < params->n_csa_offsets; i++)
3415 data[params->csa_offsets[i]] =
3416 beacon->csa_current_counter;
3417
3418 rcu_read_unlock();
3419 }
3420
3421 IEEE80211_SKB_CB(skb)->flags = flags;
3422
3423 skb->dev = sdata->dev;
3424
3425 if (!need_offchan) {
3426 *cookie = (unsigned long) skb;
3427 ieee80211_tx_skb(sdata, skb);
3428 ret = 0;
3429 goto out_unlock;
3430 }
3431
3432 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3433 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3434 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3435 IEEE80211_SKB_CB(skb)->hw_queue =
3436 local->hw.offchannel_tx_hw_queue;
3437
3438 /* This will handle all kinds of coalescing and immediate TX */
3439 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3440 params->wait, cookie, skb,
3441 IEEE80211_ROC_TYPE_MGMT_TX);
3442 if (ret)
3443 kfree_skb(skb);
3444 out_unlock:
3445 mutex_unlock(&local->mtx);
3446 return ret;
3447 }
3448
3449 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3450 struct wireless_dev *wdev,
3451 u64 cookie)
3452 {
3453 struct ieee80211_local *local = wiphy_priv(wiphy);
3454
3455 return ieee80211_cancel_roc(local, cookie, true);
3456 }
3457
3458 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3459 struct wireless_dev *wdev,
3460 u16 frame_type, bool reg)
3461 {
3462 struct ieee80211_local *local = wiphy_priv(wiphy);
3463
3464 switch (frame_type) {
3465 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3466 if (reg)
3467 local->probe_req_reg++;
3468 else
3469 local->probe_req_reg--;
3470
3471 if (!local->open_count)
3472 break;
3473
3474 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3475 break;
3476 default:
3477 break;
3478 }
3479 }
3480
3481 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3482 {
3483 struct ieee80211_local *local = wiphy_priv(wiphy);
3484
3485 if (local->started)
3486 return -EOPNOTSUPP;
3487
3488 return drv_set_antenna(local, tx_ant, rx_ant);
3489 }
3490
3491 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3492 {
3493 struct ieee80211_local *local = wiphy_priv(wiphy);
3494
3495 return drv_get_antenna(local, tx_ant, rx_ant);
3496 }
3497
3498 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3499 struct net_device *dev,
3500 struct cfg80211_gtk_rekey_data *data)
3501 {
3502 struct ieee80211_local *local = wiphy_priv(wiphy);
3503 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3504
3505 if (!local->ops->set_rekey_data)
3506 return -EOPNOTSUPP;
3507
3508 drv_set_rekey_data(local, sdata, data);
3509
3510 return 0;
3511 }
3512
3513 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3514 const u8 *peer, u64 *cookie)
3515 {
3516 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3517 struct ieee80211_local *local = sdata->local;
3518 struct ieee80211_qos_hdr *nullfunc;
3519 struct sk_buff *skb;
3520 int size = sizeof(*nullfunc);
3521 __le16 fc;
3522 bool qos;
3523 struct ieee80211_tx_info *info;
3524 struct sta_info *sta;
3525 struct ieee80211_chanctx_conf *chanctx_conf;
3526 enum ieee80211_band band;
3527
3528 rcu_read_lock();
3529 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3530 if (WARN_ON(!chanctx_conf)) {
3531 rcu_read_unlock();
3532 return -EINVAL;
3533 }
3534 band = chanctx_conf->def.chan->band;
3535 sta = sta_info_get_bss(sdata, peer);
3536 if (sta) {
3537 qos = sta->sta.wme;
3538 } else {
3539 rcu_read_unlock();
3540 return -ENOLINK;
3541 }
3542
3543 if (qos) {
3544 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3545 IEEE80211_STYPE_QOS_NULLFUNC |
3546 IEEE80211_FCTL_FROMDS);
3547 } else {
3548 size -= 2;
3549 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3550 IEEE80211_STYPE_NULLFUNC |
3551 IEEE80211_FCTL_FROMDS);
3552 }
3553
3554 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3555 if (!skb) {
3556 rcu_read_unlock();
3557 return -ENOMEM;
3558 }
3559
3560 skb->dev = dev;
3561
3562 skb_reserve(skb, local->hw.extra_tx_headroom);
3563
3564 nullfunc = (void *) skb_put(skb, size);
3565 nullfunc->frame_control = fc;
3566 nullfunc->duration_id = 0;
3567 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3568 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3569 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3570 nullfunc->seq_ctrl = 0;
3571
3572 info = IEEE80211_SKB_CB(skb);
3573
3574 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3575 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3576 info->band = band;
3577
3578 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3579 skb->priority = 7;
3580 if (qos)
3581 nullfunc->qos_ctrl = cpu_to_le16(7);
3582
3583 local_bh_disable();
3584 ieee80211_xmit(sdata, skb);
3585 local_bh_enable();
3586 rcu_read_unlock();
3587
3588 *cookie = (unsigned long) skb;
3589 return 0;
3590 }
3591
3592 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3593 struct wireless_dev *wdev,
3594 struct cfg80211_chan_def *chandef)
3595 {
3596 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3597 struct ieee80211_local *local = wiphy_priv(wiphy);
3598 struct ieee80211_chanctx_conf *chanctx_conf;
3599 int ret = -ENODATA;
3600
3601 rcu_read_lock();
3602 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3603 if (chanctx_conf) {
3604 *chandef = sdata->vif.bss_conf.chandef;
3605 ret = 0;
3606 } else if (local->open_count > 0 &&
3607 local->open_count == local->monitors &&
3608 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3609 if (local->use_chanctx)
3610 *chandef = local->monitor_chandef;
3611 else
3612 *chandef = local->_oper_chandef;
3613 ret = 0;
3614 }
3615 rcu_read_unlock();
3616
3617 return ret;
3618 }
3619
3620 #ifdef CONFIG_PM
3621 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3622 {
3623 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3624 }
3625 #endif
3626
3627 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3628 struct net_device *dev,
3629 struct cfg80211_qos_map *qos_map)
3630 {
3631 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3632 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3633
3634 if (qos_map) {
3635 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3636 if (!new_qos_map)
3637 return -ENOMEM;
3638 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3639 } else {
3640 /* A NULL qos_map was passed to disable QoS mapping */
3641 new_qos_map = NULL;
3642 }
3643
3644 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3645 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3646 if (old_qos_map)
3647 kfree_rcu(old_qos_map, rcu_head);
3648
3649 return 0;
3650 }
3651
3652 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3653 struct net_device *dev,
3654 struct cfg80211_chan_def *chandef)
3655 {
3656 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3657 int ret;
3658 u32 changed = 0;
3659
3660 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3661 if (ret == 0)
3662 ieee80211_bss_info_change_notify(sdata, changed);
3663
3664 return ret;
3665 }
3666
3667 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3668 u8 tsid, const u8 *peer, u8 up,
3669 u16 admitted_time)
3670 {
3671 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3672 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3673 int ac = ieee802_1d_to_ac[up];
3674
3675 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3676 return -EOPNOTSUPP;
3677
3678 if (!(sdata->wmm_acm & BIT(up)))
3679 return -EINVAL;
3680
3681 if (ifmgd->tx_tspec[ac].admitted_time)
3682 return -EBUSY;
3683
3684 if (admitted_time) {
3685 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3686 ifmgd->tx_tspec[ac].tsid = tsid;
3687 ifmgd->tx_tspec[ac].up = up;
3688 }
3689
3690 return 0;
3691 }
3692
3693 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3694 u8 tsid, const u8 *peer)
3695 {
3696 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3697 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3698 struct ieee80211_local *local = wiphy_priv(wiphy);
3699 int ac;
3700
3701 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3702 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3703
3704 /* skip unused entries */
3705 if (!tx_tspec->admitted_time)
3706 continue;
3707
3708 if (tx_tspec->tsid != tsid)
3709 continue;
3710
3711 /* due to this new packets will be reassigned to non-ACM ACs */
3712 tx_tspec->up = -1;
3713
3714 /* Make sure that all packets have been sent to avoid to
3715 * restore the QoS params on packets that are still on the
3716 * queues.
3717 */
3718 synchronize_net();
3719 ieee80211_flush_queues(local, sdata, false);
3720
3721 /* restore the normal QoS parameters
3722 * (unconditionally to avoid races)
3723 */
3724 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3725 tx_tspec->downgraded = false;
3726 ieee80211_sta_handle_tspec_ac_params(sdata);
3727
3728 /* finally clear all the data */
3729 memset(tx_tspec, 0, sizeof(*tx_tspec));
3730
3731 return 0;
3732 }
3733
3734 return -ENOENT;
3735 }
3736
3737 const struct cfg80211_ops mac80211_config_ops = {
3738 .add_virtual_intf = ieee80211_add_iface,
3739 .del_virtual_intf = ieee80211_del_iface,
3740 .change_virtual_intf = ieee80211_change_iface,
3741 .start_p2p_device = ieee80211_start_p2p_device,
3742 .stop_p2p_device = ieee80211_stop_p2p_device,
3743 .add_key = ieee80211_add_key,
3744 .del_key = ieee80211_del_key,
3745 .get_key = ieee80211_get_key,
3746 .set_default_key = ieee80211_config_default_key,
3747 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3748 .start_ap = ieee80211_start_ap,
3749 .change_beacon = ieee80211_change_beacon,
3750 .stop_ap = ieee80211_stop_ap,
3751 .add_station = ieee80211_add_station,
3752 .del_station = ieee80211_del_station,
3753 .change_station = ieee80211_change_station,
3754 .get_station = ieee80211_get_station,
3755 .dump_station = ieee80211_dump_station,
3756 .dump_survey = ieee80211_dump_survey,
3757 #ifdef CONFIG_MAC80211_MESH
3758 .add_mpath = ieee80211_add_mpath,
3759 .del_mpath = ieee80211_del_mpath,
3760 .change_mpath = ieee80211_change_mpath,
3761 .get_mpath = ieee80211_get_mpath,
3762 .dump_mpath = ieee80211_dump_mpath,
3763 .get_mpp = ieee80211_get_mpp,
3764 .dump_mpp = ieee80211_dump_mpp,
3765 .update_mesh_config = ieee80211_update_mesh_config,
3766 .get_mesh_config = ieee80211_get_mesh_config,
3767 .join_mesh = ieee80211_join_mesh,
3768 .leave_mesh = ieee80211_leave_mesh,
3769 #endif
3770 .join_ocb = ieee80211_join_ocb,
3771 .leave_ocb = ieee80211_leave_ocb,
3772 .change_bss = ieee80211_change_bss,
3773 .set_txq_params = ieee80211_set_txq_params,
3774 .set_monitor_channel = ieee80211_set_monitor_channel,
3775 .suspend = ieee80211_suspend,
3776 .resume = ieee80211_resume,
3777 .scan = ieee80211_scan,
3778 .sched_scan_start = ieee80211_sched_scan_start,
3779 .sched_scan_stop = ieee80211_sched_scan_stop,
3780 .auth = ieee80211_auth,
3781 .assoc = ieee80211_assoc,
3782 .deauth = ieee80211_deauth,
3783 .disassoc = ieee80211_disassoc,
3784 .join_ibss = ieee80211_join_ibss,
3785 .leave_ibss = ieee80211_leave_ibss,
3786 .set_mcast_rate = ieee80211_set_mcast_rate,
3787 .set_wiphy_params = ieee80211_set_wiphy_params,
3788 .set_tx_power = ieee80211_set_tx_power,
3789 .get_tx_power = ieee80211_get_tx_power,
3790 .set_wds_peer = ieee80211_set_wds_peer,
3791 .rfkill_poll = ieee80211_rfkill_poll,
3792 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3793 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3794 .set_power_mgmt = ieee80211_set_power_mgmt,
3795 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3796 .remain_on_channel = ieee80211_remain_on_channel,
3797 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3798 .mgmt_tx = ieee80211_mgmt_tx,
3799 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3800 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3801 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3802 .set_antenna = ieee80211_set_antenna,
3803 .get_antenna = ieee80211_get_antenna,
3804 .set_rekey_data = ieee80211_set_rekey_data,
3805 .tdls_oper = ieee80211_tdls_oper,
3806 .tdls_mgmt = ieee80211_tdls_mgmt,
3807 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3808 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3809 .probe_client = ieee80211_probe_client,
3810 .set_noack_map = ieee80211_set_noack_map,
3811 #ifdef CONFIG_PM
3812 .set_wakeup = ieee80211_set_wakeup,
3813 #endif
3814 .get_channel = ieee80211_cfg_get_channel,
3815 .start_radar_detection = ieee80211_start_radar_detection,
3816 .channel_switch = ieee80211_channel_switch,
3817 .set_qos_map = ieee80211_set_qos_map,
3818 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3819 .add_tx_ts = ieee80211_add_tx_ts,
3820 .del_tx_ts = ieee80211_del_tx_ts,
3821 };
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