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[people/ms/linux.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2015 Intel Mobile Communications GmbH
6 *
7 * This file is GPLv2 as found in COPYING.
8 */
9
10 #include <linux/ieee80211.h>
11 #include <linux/nl80211.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/slab.h>
14 #include <net/net_namespace.h>
15 #include <linux/rcupdate.h>
16 #include <linux/if_ether.h>
17 #include <net/cfg80211.h>
18 #include "ieee80211_i.h"
19 #include "driver-ops.h"
20 #include "rate.h"
21 #include "mesh.h"
22 #include "wme.h"
23
24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
25 const char *name,
26 unsigned char name_assign_type,
27 enum nl80211_iftype type,
28 u32 *flags,
29 struct vif_params *params)
30 {
31 struct ieee80211_local *local = wiphy_priv(wiphy);
32 struct wireless_dev *wdev;
33 struct ieee80211_sub_if_data *sdata;
34 int err;
35
36 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
37 if (err)
38 return ERR_PTR(err);
39
40 if (type == NL80211_IFTYPE_MONITOR && flags) {
41 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
42 sdata->u.mntr_flags = *flags;
43 }
44
45 return wdev;
46 }
47
48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
49 {
50 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
51
52 return 0;
53 }
54
55 static int ieee80211_change_iface(struct wiphy *wiphy,
56 struct net_device *dev,
57 enum nl80211_iftype type, u32 *flags,
58 struct vif_params *params)
59 {
60 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
61 int ret;
62
63 ret = ieee80211_if_change_type(sdata, type);
64 if (ret)
65 return ret;
66
67 if (type == NL80211_IFTYPE_AP_VLAN &&
68 params && params->use_4addr == 0)
69 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
70 else if (type == NL80211_IFTYPE_STATION &&
71 params && params->use_4addr >= 0)
72 sdata->u.mgd.use_4addr = params->use_4addr;
73
74 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
75 struct ieee80211_local *local = sdata->local;
76
77 if (ieee80211_sdata_running(sdata)) {
78 u32 mask = MONITOR_FLAG_COOK_FRAMES |
79 MONITOR_FLAG_ACTIVE;
80
81 /*
82 * Prohibit MONITOR_FLAG_COOK_FRAMES and
83 * MONITOR_FLAG_ACTIVE to be changed while the
84 * interface is up.
85 * Else we would need to add a lot of cruft
86 * to update everything:
87 * cooked_mntrs, monitor and all fif_* counters
88 * reconfigure hardware
89 */
90 if ((*flags & mask) != (sdata->u.mntr_flags & mask))
91 return -EBUSY;
92
93 ieee80211_adjust_monitor_flags(sdata, -1);
94 sdata->u.mntr_flags = *flags;
95 ieee80211_adjust_monitor_flags(sdata, 1);
96
97 ieee80211_configure_filter(local);
98 } else {
99 /*
100 * Because the interface is down, ieee80211_do_stop
101 * and ieee80211_do_open take care of "everything"
102 * mentioned in the comment above.
103 */
104 sdata->u.mntr_flags = *flags;
105 }
106 }
107
108 return 0;
109 }
110
111 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
112 struct wireless_dev *wdev)
113 {
114 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
115 int ret;
116
117 mutex_lock(&sdata->local->chanctx_mtx);
118 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
119 mutex_unlock(&sdata->local->chanctx_mtx);
120 if (ret < 0)
121 return ret;
122
123 return ieee80211_do_open(wdev, true);
124 }
125
126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
127 struct wireless_dev *wdev)
128 {
129 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
130 }
131
132 static int ieee80211_set_noack_map(struct wiphy *wiphy,
133 struct net_device *dev,
134 u16 noack_map)
135 {
136 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
137
138 sdata->noack_map = noack_map;
139
140 ieee80211_check_fast_xmit_iface(sdata);
141
142 return 0;
143 }
144
145 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
146 u8 key_idx, bool pairwise, const u8 *mac_addr,
147 struct key_params *params)
148 {
149 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
150 struct ieee80211_local *local = sdata->local;
151 struct sta_info *sta = NULL;
152 const struct ieee80211_cipher_scheme *cs = NULL;
153 struct ieee80211_key *key;
154 int err;
155
156 if (!ieee80211_sdata_running(sdata))
157 return -ENETDOWN;
158
159 /* reject WEP and TKIP keys if WEP failed to initialize */
160 switch (params->cipher) {
161 case WLAN_CIPHER_SUITE_WEP40:
162 case WLAN_CIPHER_SUITE_TKIP:
163 case WLAN_CIPHER_SUITE_WEP104:
164 if (IS_ERR(local->wep_tx_tfm))
165 return -EINVAL;
166 break;
167 case WLAN_CIPHER_SUITE_CCMP:
168 case WLAN_CIPHER_SUITE_CCMP_256:
169 case WLAN_CIPHER_SUITE_AES_CMAC:
170 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
171 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
172 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
173 case WLAN_CIPHER_SUITE_GCMP:
174 case WLAN_CIPHER_SUITE_GCMP_256:
175 break;
176 default:
177 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
178 break;
179 }
180
181 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
182 params->key, params->seq_len, params->seq,
183 cs);
184 if (IS_ERR(key))
185 return PTR_ERR(key);
186
187 if (pairwise)
188 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
189
190 mutex_lock(&local->sta_mtx);
191
192 if (mac_addr) {
193 if (ieee80211_vif_is_mesh(&sdata->vif))
194 sta = sta_info_get(sdata, mac_addr);
195 else
196 sta = sta_info_get_bss(sdata, mac_addr);
197 /*
198 * The ASSOC test makes sure the driver is ready to
199 * receive the key. When wpa_supplicant has roamed
200 * using FT, it attempts to set the key before
201 * association has completed, this rejects that attempt
202 * so it will set the key again after association.
203 *
204 * TODO: accept the key if we have a station entry and
205 * add it to the device after the station.
206 */
207 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
208 ieee80211_key_free_unused(key);
209 err = -ENOENT;
210 goto out_unlock;
211 }
212 }
213
214 switch (sdata->vif.type) {
215 case NL80211_IFTYPE_STATION:
216 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
217 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
218 break;
219 case NL80211_IFTYPE_AP:
220 case NL80211_IFTYPE_AP_VLAN:
221 /* Keys without a station are used for TX only */
222 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
223 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
224 break;
225 case NL80211_IFTYPE_ADHOC:
226 /* no MFP (yet) */
227 break;
228 case NL80211_IFTYPE_MESH_POINT:
229 #ifdef CONFIG_MAC80211_MESH
230 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
231 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
232 break;
233 #endif
234 case NL80211_IFTYPE_WDS:
235 case NL80211_IFTYPE_MONITOR:
236 case NL80211_IFTYPE_P2P_DEVICE:
237 case NL80211_IFTYPE_UNSPECIFIED:
238 case NUM_NL80211_IFTYPES:
239 case NL80211_IFTYPE_P2P_CLIENT:
240 case NL80211_IFTYPE_P2P_GO:
241 case NL80211_IFTYPE_OCB:
242 /* shouldn't happen */
243 WARN_ON_ONCE(1);
244 break;
245 }
246
247 if (sta)
248 sta->cipher_scheme = cs;
249
250 err = ieee80211_key_link(key, sdata, sta);
251
252 out_unlock:
253 mutex_unlock(&local->sta_mtx);
254
255 return err;
256 }
257
258 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
259 u8 key_idx, bool pairwise, const u8 *mac_addr)
260 {
261 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
262 struct ieee80211_local *local = sdata->local;
263 struct sta_info *sta;
264 struct ieee80211_key *key = NULL;
265 int ret;
266
267 mutex_lock(&local->sta_mtx);
268 mutex_lock(&local->key_mtx);
269
270 if (mac_addr) {
271 ret = -ENOENT;
272
273 sta = sta_info_get_bss(sdata, mac_addr);
274 if (!sta)
275 goto out_unlock;
276
277 if (pairwise)
278 key = key_mtx_dereference(local, sta->ptk[key_idx]);
279 else
280 key = key_mtx_dereference(local, sta->gtk[key_idx]);
281 } else
282 key = key_mtx_dereference(local, sdata->keys[key_idx]);
283
284 if (!key) {
285 ret = -ENOENT;
286 goto out_unlock;
287 }
288
289 ieee80211_key_free(key, true);
290
291 ret = 0;
292 out_unlock:
293 mutex_unlock(&local->key_mtx);
294 mutex_unlock(&local->sta_mtx);
295
296 return ret;
297 }
298
299 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
300 u8 key_idx, bool pairwise, const u8 *mac_addr,
301 void *cookie,
302 void (*callback)(void *cookie,
303 struct key_params *params))
304 {
305 struct ieee80211_sub_if_data *sdata;
306 struct sta_info *sta = NULL;
307 u8 seq[6] = {0};
308 struct key_params params;
309 struct ieee80211_key *key = NULL;
310 u64 pn64;
311 u32 iv32;
312 u16 iv16;
313 int err = -ENOENT;
314 struct ieee80211_key_seq kseq = {};
315
316 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
317
318 rcu_read_lock();
319
320 if (mac_addr) {
321 sta = sta_info_get_bss(sdata, mac_addr);
322 if (!sta)
323 goto out;
324
325 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
326 key = rcu_dereference(sta->ptk[key_idx]);
327 else if (!pairwise &&
328 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
329 key = rcu_dereference(sta->gtk[key_idx]);
330 } else
331 key = rcu_dereference(sdata->keys[key_idx]);
332
333 if (!key)
334 goto out;
335
336 memset(&params, 0, sizeof(params));
337
338 params.cipher = key->conf.cipher;
339
340 switch (key->conf.cipher) {
341 case WLAN_CIPHER_SUITE_TKIP:
342 iv32 = key->u.tkip.tx.iv32;
343 iv16 = key->u.tkip.tx.iv16;
344
345 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
346 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
347 drv_get_key_seq(sdata->local, key, &kseq);
348 iv32 = kseq.tkip.iv32;
349 iv16 = kseq.tkip.iv16;
350 }
351
352 seq[0] = iv16 & 0xff;
353 seq[1] = (iv16 >> 8) & 0xff;
354 seq[2] = iv32 & 0xff;
355 seq[3] = (iv32 >> 8) & 0xff;
356 seq[4] = (iv32 >> 16) & 0xff;
357 seq[5] = (iv32 >> 24) & 0xff;
358 params.seq = seq;
359 params.seq_len = 6;
360 break;
361 case WLAN_CIPHER_SUITE_CCMP:
362 case WLAN_CIPHER_SUITE_CCMP_256:
363 case WLAN_CIPHER_SUITE_AES_CMAC:
364 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
365 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
366 offsetof(typeof(kseq), aes_cmac));
367 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
368 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
369 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
370 offsetof(typeof(kseq), aes_gmac));
371 case WLAN_CIPHER_SUITE_GCMP:
372 case WLAN_CIPHER_SUITE_GCMP_256:
373 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
374 offsetof(typeof(kseq), gcmp));
375
376 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
377 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
378 drv_get_key_seq(sdata->local, key, &kseq);
379 memcpy(seq, kseq.ccmp.pn, 6);
380 } else {
381 pn64 = atomic64_read(&key->conf.tx_pn);
382 seq[0] = pn64;
383 seq[1] = pn64 >> 8;
384 seq[2] = pn64 >> 16;
385 seq[3] = pn64 >> 24;
386 seq[4] = pn64 >> 32;
387 seq[5] = pn64 >> 40;
388 }
389 params.seq = seq;
390 params.seq_len = 6;
391 break;
392 default:
393 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
394 break;
395 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
396 break;
397 drv_get_key_seq(sdata->local, key, &kseq);
398 params.seq = kseq.hw.seq;
399 params.seq_len = kseq.hw.seq_len;
400 break;
401 }
402
403 params.key = key->conf.key;
404 params.key_len = key->conf.keylen;
405
406 callback(cookie, &params);
407 err = 0;
408
409 out:
410 rcu_read_unlock();
411 return err;
412 }
413
414 static int ieee80211_config_default_key(struct wiphy *wiphy,
415 struct net_device *dev,
416 u8 key_idx, bool uni,
417 bool multi)
418 {
419 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
420
421 ieee80211_set_default_key(sdata, key_idx, uni, multi);
422
423 return 0;
424 }
425
426 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
427 struct net_device *dev,
428 u8 key_idx)
429 {
430 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
431
432 ieee80211_set_default_mgmt_key(sdata, key_idx);
433
434 return 0;
435 }
436
437 void sta_set_rate_info_tx(struct sta_info *sta,
438 const struct ieee80211_tx_rate *rate,
439 struct rate_info *rinfo)
440 {
441 rinfo->flags = 0;
442 if (rate->flags & IEEE80211_TX_RC_MCS) {
443 rinfo->flags |= RATE_INFO_FLAGS_MCS;
444 rinfo->mcs = rate->idx;
445 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
446 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
447 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
448 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
449 } else {
450 struct ieee80211_supported_band *sband;
451 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
452 u16 brate;
453
454 sband = sta->local->hw.wiphy->bands[
455 ieee80211_get_sdata_band(sta->sdata)];
456 brate = sband->bitrates[rate->idx].bitrate;
457 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
458 }
459 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
460 rinfo->bw = RATE_INFO_BW_40;
461 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
462 rinfo->bw = RATE_INFO_BW_80;
463 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
464 rinfo->bw = RATE_INFO_BW_160;
465 else
466 rinfo->bw = RATE_INFO_BW_20;
467 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
468 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
469 }
470
471 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
472 int idx, u8 *mac, struct station_info *sinfo)
473 {
474 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
475 struct ieee80211_local *local = sdata->local;
476 struct sta_info *sta;
477 int ret = -ENOENT;
478
479 mutex_lock(&local->sta_mtx);
480
481 sta = sta_info_get_by_idx(sdata, idx);
482 if (sta) {
483 ret = 0;
484 memcpy(mac, sta->sta.addr, ETH_ALEN);
485 sta_set_sinfo(sta, sinfo);
486 }
487
488 mutex_unlock(&local->sta_mtx);
489
490 return ret;
491 }
492
493 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
494 int idx, struct survey_info *survey)
495 {
496 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
497
498 return drv_get_survey(local, idx, survey);
499 }
500
501 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
502 const u8 *mac, struct station_info *sinfo)
503 {
504 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
505 struct ieee80211_local *local = sdata->local;
506 struct sta_info *sta;
507 int ret = -ENOENT;
508
509 mutex_lock(&local->sta_mtx);
510
511 sta = sta_info_get_bss(sdata, mac);
512 if (sta) {
513 ret = 0;
514 sta_set_sinfo(sta, sinfo);
515 }
516
517 mutex_unlock(&local->sta_mtx);
518
519 return ret;
520 }
521
522 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
523 struct cfg80211_chan_def *chandef)
524 {
525 struct ieee80211_local *local = wiphy_priv(wiphy);
526 struct ieee80211_sub_if_data *sdata;
527 int ret = 0;
528
529 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
530 return 0;
531
532 mutex_lock(&local->mtx);
533 mutex_lock(&local->iflist_mtx);
534 if (local->use_chanctx) {
535 sdata = rcu_dereference_protected(
536 local->monitor_sdata,
537 lockdep_is_held(&local->iflist_mtx));
538 if (sdata) {
539 ieee80211_vif_release_channel(sdata);
540 ret = ieee80211_vif_use_channel(sdata, chandef,
541 IEEE80211_CHANCTX_EXCLUSIVE);
542 }
543 } else if (local->open_count == local->monitors) {
544 local->_oper_chandef = *chandef;
545 ieee80211_hw_config(local, 0);
546 }
547
548 if (ret == 0)
549 local->monitor_chandef = *chandef;
550 mutex_unlock(&local->iflist_mtx);
551 mutex_unlock(&local->mtx);
552
553 return ret;
554 }
555
556 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
557 const u8 *resp, size_t resp_len,
558 const struct ieee80211_csa_settings *csa)
559 {
560 struct probe_resp *new, *old;
561
562 if (!resp || !resp_len)
563 return 1;
564
565 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
566
567 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
568 if (!new)
569 return -ENOMEM;
570
571 new->len = resp_len;
572 memcpy(new->data, resp, resp_len);
573
574 if (csa)
575 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
576 csa->n_counter_offsets_presp *
577 sizeof(new->csa_counter_offsets[0]));
578
579 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
580 if (old)
581 kfree_rcu(old, rcu_head);
582
583 return 0;
584 }
585
586 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
587 struct cfg80211_beacon_data *params,
588 const struct ieee80211_csa_settings *csa)
589 {
590 struct beacon_data *new, *old;
591 int new_head_len, new_tail_len;
592 int size, err;
593 u32 changed = BSS_CHANGED_BEACON;
594
595 old = sdata_dereference(sdata->u.ap.beacon, sdata);
596
597
598 /* Need to have a beacon head if we don't have one yet */
599 if (!params->head && !old)
600 return -EINVAL;
601
602 /* new or old head? */
603 if (params->head)
604 new_head_len = params->head_len;
605 else
606 new_head_len = old->head_len;
607
608 /* new or old tail? */
609 if (params->tail || !old)
610 /* params->tail_len will be zero for !params->tail */
611 new_tail_len = params->tail_len;
612 else
613 new_tail_len = old->tail_len;
614
615 size = sizeof(*new) + new_head_len + new_tail_len;
616
617 new = kzalloc(size, GFP_KERNEL);
618 if (!new)
619 return -ENOMEM;
620
621 /* start filling the new info now */
622
623 /*
624 * pointers go into the block we allocated,
625 * memory is | beacon_data | head | tail |
626 */
627 new->head = ((u8 *) new) + sizeof(*new);
628 new->tail = new->head + new_head_len;
629 new->head_len = new_head_len;
630 new->tail_len = new_tail_len;
631
632 if (csa) {
633 new->csa_current_counter = csa->count;
634 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
635 csa->n_counter_offsets_beacon *
636 sizeof(new->csa_counter_offsets[0]));
637 }
638
639 /* copy in head */
640 if (params->head)
641 memcpy(new->head, params->head, new_head_len);
642 else
643 memcpy(new->head, old->head, new_head_len);
644
645 /* copy in optional tail */
646 if (params->tail)
647 memcpy(new->tail, params->tail, new_tail_len);
648 else
649 if (old)
650 memcpy(new->tail, old->tail, new_tail_len);
651
652 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
653 params->probe_resp_len, csa);
654 if (err < 0)
655 return err;
656 if (err == 0)
657 changed |= BSS_CHANGED_AP_PROBE_RESP;
658
659 rcu_assign_pointer(sdata->u.ap.beacon, new);
660
661 if (old)
662 kfree_rcu(old, rcu_head);
663
664 return changed;
665 }
666
667 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
668 struct cfg80211_ap_settings *params)
669 {
670 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
671 struct ieee80211_local *local = sdata->local;
672 struct beacon_data *old;
673 struct ieee80211_sub_if_data *vlan;
674 u32 changed = BSS_CHANGED_BEACON_INT |
675 BSS_CHANGED_BEACON_ENABLED |
676 BSS_CHANGED_BEACON |
677 BSS_CHANGED_SSID |
678 BSS_CHANGED_P2P_PS |
679 BSS_CHANGED_TXPOWER;
680 int err;
681
682 old = sdata_dereference(sdata->u.ap.beacon, sdata);
683 if (old)
684 return -EALREADY;
685
686 switch (params->smps_mode) {
687 case NL80211_SMPS_OFF:
688 sdata->smps_mode = IEEE80211_SMPS_OFF;
689 break;
690 case NL80211_SMPS_STATIC:
691 sdata->smps_mode = IEEE80211_SMPS_STATIC;
692 break;
693 case NL80211_SMPS_DYNAMIC:
694 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
695 break;
696 default:
697 return -EINVAL;
698 }
699 sdata->needed_rx_chains = sdata->local->rx_chains;
700
701 mutex_lock(&local->mtx);
702 err = ieee80211_vif_use_channel(sdata, &params->chandef,
703 IEEE80211_CHANCTX_SHARED);
704 if (!err)
705 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
706 mutex_unlock(&local->mtx);
707 if (err)
708 return err;
709
710 /*
711 * Apply control port protocol, this allows us to
712 * not encrypt dynamic WEP control frames.
713 */
714 sdata->control_port_protocol = params->crypto.control_port_ethertype;
715 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
716 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
717 &params->crypto,
718 sdata->vif.type);
719
720 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
721 vlan->control_port_protocol =
722 params->crypto.control_port_ethertype;
723 vlan->control_port_no_encrypt =
724 params->crypto.control_port_no_encrypt;
725 vlan->encrypt_headroom =
726 ieee80211_cs_headroom(sdata->local,
727 &params->crypto,
728 vlan->vif.type);
729 }
730
731 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
732 sdata->vif.bss_conf.dtim_period = params->dtim_period;
733 sdata->vif.bss_conf.enable_beacon = true;
734
735 sdata->vif.bss_conf.ssid_len = params->ssid_len;
736 if (params->ssid_len)
737 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
738 params->ssid_len);
739 sdata->vif.bss_conf.hidden_ssid =
740 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
741
742 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
743 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
744 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
745 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
746 if (params->p2p_opp_ps)
747 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
748 IEEE80211_P2P_OPPPS_ENABLE_BIT;
749
750 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
751 if (err < 0) {
752 ieee80211_vif_release_channel(sdata);
753 return err;
754 }
755 changed |= err;
756
757 err = drv_start_ap(sdata->local, sdata);
758 if (err) {
759 old = sdata_dereference(sdata->u.ap.beacon, sdata);
760
761 if (old)
762 kfree_rcu(old, rcu_head);
763 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
764 ieee80211_vif_release_channel(sdata);
765 return err;
766 }
767
768 ieee80211_recalc_dtim(local, sdata);
769 ieee80211_bss_info_change_notify(sdata, changed);
770
771 netif_carrier_on(dev);
772 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
773 netif_carrier_on(vlan->dev);
774
775 return 0;
776 }
777
778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
779 struct cfg80211_beacon_data *params)
780 {
781 struct ieee80211_sub_if_data *sdata;
782 struct beacon_data *old;
783 int err;
784
785 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
786 sdata_assert_lock(sdata);
787
788 /* don't allow changing the beacon while CSA is in place - offset
789 * of channel switch counter may change
790 */
791 if (sdata->vif.csa_active)
792 return -EBUSY;
793
794 old = sdata_dereference(sdata->u.ap.beacon, sdata);
795 if (!old)
796 return -ENOENT;
797
798 err = ieee80211_assign_beacon(sdata, params, NULL);
799 if (err < 0)
800 return err;
801 ieee80211_bss_info_change_notify(sdata, err);
802 return 0;
803 }
804
805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
806 {
807 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
808 struct ieee80211_sub_if_data *vlan;
809 struct ieee80211_local *local = sdata->local;
810 struct beacon_data *old_beacon;
811 struct probe_resp *old_probe_resp;
812 struct cfg80211_chan_def chandef;
813
814 sdata_assert_lock(sdata);
815
816 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
817 if (!old_beacon)
818 return -ENOENT;
819 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
820
821 /* abort any running channel switch */
822 mutex_lock(&local->mtx);
823 sdata->vif.csa_active = false;
824 if (sdata->csa_block_tx) {
825 ieee80211_wake_vif_queues(local, sdata,
826 IEEE80211_QUEUE_STOP_REASON_CSA);
827 sdata->csa_block_tx = false;
828 }
829
830 mutex_unlock(&local->mtx);
831
832 kfree(sdata->u.ap.next_beacon);
833 sdata->u.ap.next_beacon = NULL;
834
835 /* turn off carrier for this interface and dependent VLANs */
836 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
837 netif_carrier_off(vlan->dev);
838 netif_carrier_off(dev);
839
840 /* remove beacon and probe response */
841 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
842 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
843 kfree_rcu(old_beacon, rcu_head);
844 if (old_probe_resp)
845 kfree_rcu(old_probe_resp, rcu_head);
846 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
847
848 __sta_info_flush(sdata, true);
849 ieee80211_free_keys(sdata, true);
850
851 sdata->vif.bss_conf.enable_beacon = false;
852 sdata->vif.bss_conf.ssid_len = 0;
853 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
854 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
855
856 if (sdata->wdev.cac_started) {
857 chandef = sdata->vif.bss_conf.chandef;
858 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
859 cfg80211_cac_event(sdata->dev, &chandef,
860 NL80211_RADAR_CAC_ABORTED,
861 GFP_KERNEL);
862 }
863
864 drv_stop_ap(sdata->local, sdata);
865
866 /* free all potentially still buffered bcast frames */
867 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
868 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
869
870 mutex_lock(&local->mtx);
871 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
872 ieee80211_vif_release_channel(sdata);
873 mutex_unlock(&local->mtx);
874
875 return 0;
876 }
877
878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
879 struct iapp_layer2_update {
880 u8 da[ETH_ALEN]; /* broadcast */
881 u8 sa[ETH_ALEN]; /* STA addr */
882 __be16 len; /* 6 */
883 u8 dsap; /* 0 */
884 u8 ssap; /* 0 */
885 u8 control;
886 u8 xid_info[3];
887 } __packed;
888
889 static void ieee80211_send_layer2_update(struct sta_info *sta)
890 {
891 struct iapp_layer2_update *msg;
892 struct sk_buff *skb;
893
894 /* Send Level 2 Update Frame to update forwarding tables in layer 2
895 * bridge devices */
896
897 skb = dev_alloc_skb(sizeof(*msg));
898 if (!skb)
899 return;
900 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
901
902 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
903 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
904
905 eth_broadcast_addr(msg->da);
906 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
907 msg->len = htons(6);
908 msg->dsap = 0;
909 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
910 msg->control = 0xaf; /* XID response lsb.1111F101.
911 * F=0 (no poll command; unsolicited frame) */
912 msg->xid_info[0] = 0x81; /* XID format identifier */
913 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
914 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
915
916 skb->dev = sta->sdata->dev;
917 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
918 memset(skb->cb, 0, sizeof(skb->cb));
919 netif_rx_ni(skb);
920 }
921
922 static int sta_apply_auth_flags(struct ieee80211_local *local,
923 struct sta_info *sta,
924 u32 mask, u32 set)
925 {
926 int ret;
927
928 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
929 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
930 !test_sta_flag(sta, WLAN_STA_AUTH)) {
931 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
932 if (ret)
933 return ret;
934 }
935
936 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
937 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
938 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
939 /*
940 * When peer becomes associated, init rate control as
941 * well. Some drivers require rate control initialized
942 * before drv_sta_state() is called.
943 */
944 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
945 rate_control_rate_init(sta);
946
947 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
948 if (ret)
949 return ret;
950 }
951
952 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
953 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
954 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
955 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
956 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
957 else
958 ret = 0;
959 if (ret)
960 return ret;
961 }
962
963 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
964 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
965 test_sta_flag(sta, WLAN_STA_ASSOC)) {
966 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
967 if (ret)
968 return ret;
969 }
970
971 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
972 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
973 test_sta_flag(sta, WLAN_STA_AUTH)) {
974 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
975 if (ret)
976 return ret;
977 }
978
979 return 0;
980 }
981
982 static void sta_apply_mesh_params(struct ieee80211_local *local,
983 struct sta_info *sta,
984 struct station_parameters *params)
985 {
986 #ifdef CONFIG_MAC80211_MESH
987 struct ieee80211_sub_if_data *sdata = sta->sdata;
988 u32 changed = 0;
989
990 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
991 switch (params->plink_state) {
992 case NL80211_PLINK_ESTAB:
993 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
994 changed = mesh_plink_inc_estab_count(sdata);
995 sta->mesh->plink_state = params->plink_state;
996
997 ieee80211_mps_sta_status_update(sta);
998 changed |= ieee80211_mps_set_sta_local_pm(sta,
999 sdata->u.mesh.mshcfg.power_mode);
1000 break;
1001 case NL80211_PLINK_LISTEN:
1002 case NL80211_PLINK_BLOCKED:
1003 case NL80211_PLINK_OPN_SNT:
1004 case NL80211_PLINK_OPN_RCVD:
1005 case NL80211_PLINK_CNF_RCVD:
1006 case NL80211_PLINK_HOLDING:
1007 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1008 changed = mesh_plink_dec_estab_count(sdata);
1009 sta->mesh->plink_state = params->plink_state;
1010
1011 ieee80211_mps_sta_status_update(sta);
1012 changed |= ieee80211_mps_set_sta_local_pm(sta,
1013 NL80211_MESH_POWER_UNKNOWN);
1014 break;
1015 default:
1016 /* nothing */
1017 break;
1018 }
1019 }
1020
1021 switch (params->plink_action) {
1022 case NL80211_PLINK_ACTION_NO_ACTION:
1023 /* nothing */
1024 break;
1025 case NL80211_PLINK_ACTION_OPEN:
1026 changed |= mesh_plink_open(sta);
1027 break;
1028 case NL80211_PLINK_ACTION_BLOCK:
1029 changed |= mesh_plink_block(sta);
1030 break;
1031 }
1032
1033 if (params->local_pm)
1034 changed |= ieee80211_mps_set_sta_local_pm(sta,
1035 params->local_pm);
1036
1037 ieee80211_mbss_info_change_notify(sdata, changed);
1038 #endif
1039 }
1040
1041 static int sta_apply_parameters(struct ieee80211_local *local,
1042 struct sta_info *sta,
1043 struct station_parameters *params)
1044 {
1045 int ret = 0;
1046 struct ieee80211_supported_band *sband;
1047 struct ieee80211_sub_if_data *sdata = sta->sdata;
1048 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1049 u32 mask, set;
1050
1051 sband = local->hw.wiphy->bands[band];
1052
1053 mask = params->sta_flags_mask;
1054 set = params->sta_flags_set;
1055
1056 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1057 /*
1058 * In mesh mode, ASSOCIATED isn't part of the nl80211
1059 * API but must follow AUTHENTICATED for driver state.
1060 */
1061 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1062 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1063 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1064 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1065 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1066 /*
1067 * TDLS -- everything follows authorized, but
1068 * only becoming authorized is possible, not
1069 * going back
1070 */
1071 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1072 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1073 BIT(NL80211_STA_FLAG_ASSOCIATED);
1074 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1075 BIT(NL80211_STA_FLAG_ASSOCIATED);
1076 }
1077 }
1078
1079 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1080 local->hw.queues >= IEEE80211_NUM_ACS)
1081 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1082
1083 /* auth flags will be set later for TDLS,
1084 * and for unassociated stations that move to assocaited */
1085 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1086 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1087 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1088 ret = sta_apply_auth_flags(local, sta, mask, set);
1089 if (ret)
1090 return ret;
1091 }
1092
1093 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1094 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1095 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1096 else
1097 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1098 }
1099
1100 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1101 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1102 if (set & BIT(NL80211_STA_FLAG_MFP))
1103 set_sta_flag(sta, WLAN_STA_MFP);
1104 else
1105 clear_sta_flag(sta, WLAN_STA_MFP);
1106 }
1107
1108 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1109 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1110 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1111 else
1112 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1113 }
1114
1115 /* mark TDLS channel switch support, if the AP allows it */
1116 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1117 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1118 params->ext_capab_len >= 4 &&
1119 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1120 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1121
1122 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1123 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1124 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1125 params->ext_capab_len >= 8 &&
1126 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1127 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1128
1129 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1130 sta->sta.uapsd_queues = params->uapsd_queues;
1131 sta->sta.max_sp = params->max_sp;
1132 }
1133
1134 /*
1135 * cfg80211 validates this (1-2007) and allows setting the AID
1136 * only when creating a new station entry
1137 */
1138 if (params->aid)
1139 sta->sta.aid = params->aid;
1140
1141 /*
1142 * Some of the following updates would be racy if called on an
1143 * existing station, via ieee80211_change_station(). However,
1144 * all such changes are rejected by cfg80211 except for updates
1145 * changing the supported rates on an existing but not yet used
1146 * TDLS peer.
1147 */
1148
1149 if (params->listen_interval >= 0)
1150 sta->listen_interval = params->listen_interval;
1151
1152 if (params->supported_rates) {
1153 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1154 sband, params->supported_rates,
1155 params->supported_rates_len,
1156 &sta->sta.supp_rates[band]);
1157 }
1158
1159 if (params->ht_capa)
1160 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1161 params->ht_capa, sta);
1162
1163 if (params->vht_capa)
1164 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1165 params->vht_capa, sta);
1166
1167 if (params->opmode_notif_used) {
1168 /* returned value is only needed for rc update, but the
1169 * rc isn't initialized here yet, so ignore it
1170 */
1171 __ieee80211_vht_handle_opmode(sdata, sta,
1172 params->opmode_notif,
1173 band, false);
1174 }
1175
1176 if (ieee80211_vif_is_mesh(&sdata->vif))
1177 sta_apply_mesh_params(local, sta, params);
1178
1179 /* set the STA state after all sta info from usermode has been set */
1180 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1181 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1182 ret = sta_apply_auth_flags(local, sta, mask, set);
1183 if (ret)
1184 return ret;
1185 }
1186
1187 return 0;
1188 }
1189
1190 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1191 const u8 *mac,
1192 struct station_parameters *params)
1193 {
1194 struct ieee80211_local *local = wiphy_priv(wiphy);
1195 struct sta_info *sta;
1196 struct ieee80211_sub_if_data *sdata;
1197 int err;
1198 int layer2_update;
1199
1200 if (params->vlan) {
1201 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1202
1203 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1204 sdata->vif.type != NL80211_IFTYPE_AP)
1205 return -EINVAL;
1206 } else
1207 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1208
1209 if (ether_addr_equal(mac, sdata->vif.addr))
1210 return -EINVAL;
1211
1212 if (is_multicast_ether_addr(mac))
1213 return -EINVAL;
1214
1215 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1216 if (!sta)
1217 return -ENOMEM;
1218
1219 /*
1220 * defaults -- if userspace wants something else we'll
1221 * change it accordingly in sta_apply_parameters()
1222 */
1223 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
1224 !(params->sta_flags_set & (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1225 BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1226 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1227 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1228 }
1229 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1230 sta->sta.tdls = true;
1231
1232 err = sta_apply_parameters(local, sta, params);
1233 if (err) {
1234 sta_info_free(local, sta);
1235 return err;
1236 }
1237
1238 /*
1239 * for TDLS and for unassociated station, rate control should be
1240 * initialized only when rates are known and station is marked
1241 * authorized/associated
1242 */
1243 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1244 test_sta_flag(sta, WLAN_STA_ASSOC))
1245 rate_control_rate_init(sta);
1246
1247 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1248 sdata->vif.type == NL80211_IFTYPE_AP;
1249
1250 err = sta_info_insert_rcu(sta);
1251 if (err) {
1252 rcu_read_unlock();
1253 return err;
1254 }
1255
1256 if (layer2_update)
1257 ieee80211_send_layer2_update(sta);
1258
1259 rcu_read_unlock();
1260
1261 return 0;
1262 }
1263
1264 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1265 struct station_del_parameters *params)
1266 {
1267 struct ieee80211_sub_if_data *sdata;
1268
1269 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1270
1271 if (params->mac)
1272 return sta_info_destroy_addr_bss(sdata, params->mac);
1273
1274 sta_info_flush(sdata);
1275 return 0;
1276 }
1277
1278 static int ieee80211_change_station(struct wiphy *wiphy,
1279 struct net_device *dev, const u8 *mac,
1280 struct station_parameters *params)
1281 {
1282 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1283 struct ieee80211_local *local = wiphy_priv(wiphy);
1284 struct sta_info *sta;
1285 struct ieee80211_sub_if_data *vlansdata;
1286 enum cfg80211_station_type statype;
1287 int err;
1288
1289 mutex_lock(&local->sta_mtx);
1290
1291 sta = sta_info_get_bss(sdata, mac);
1292 if (!sta) {
1293 err = -ENOENT;
1294 goto out_err;
1295 }
1296
1297 switch (sdata->vif.type) {
1298 case NL80211_IFTYPE_MESH_POINT:
1299 if (sdata->u.mesh.user_mpm)
1300 statype = CFG80211_STA_MESH_PEER_USER;
1301 else
1302 statype = CFG80211_STA_MESH_PEER_KERNEL;
1303 break;
1304 case NL80211_IFTYPE_ADHOC:
1305 statype = CFG80211_STA_IBSS;
1306 break;
1307 case NL80211_IFTYPE_STATION:
1308 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1309 statype = CFG80211_STA_AP_STA;
1310 break;
1311 }
1312 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1313 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1314 else
1315 statype = CFG80211_STA_TDLS_PEER_SETUP;
1316 break;
1317 case NL80211_IFTYPE_AP:
1318 case NL80211_IFTYPE_AP_VLAN:
1319 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1320 statype = CFG80211_STA_AP_CLIENT;
1321 else
1322 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1323 break;
1324 default:
1325 err = -EOPNOTSUPP;
1326 goto out_err;
1327 }
1328
1329 err = cfg80211_check_station_change(wiphy, params, statype);
1330 if (err)
1331 goto out_err;
1332
1333 if (params->vlan && params->vlan != sta->sdata->dev) {
1334 bool prev_4addr = false;
1335 bool new_4addr = false;
1336
1337 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1338
1339 if (params->vlan->ieee80211_ptr->use_4addr) {
1340 if (vlansdata->u.vlan.sta) {
1341 err = -EBUSY;
1342 goto out_err;
1343 }
1344
1345 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1346 new_4addr = true;
1347 }
1348
1349 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1350 sta->sdata->u.vlan.sta) {
1351 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1352 prev_4addr = true;
1353 }
1354
1355 sta->sdata = vlansdata;
1356 ieee80211_check_fast_xmit(sta);
1357
1358 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1359 prev_4addr != new_4addr) {
1360 if (new_4addr)
1361 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1362 else
1363 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1364 }
1365
1366 ieee80211_send_layer2_update(sta);
1367 }
1368
1369 err = sta_apply_parameters(local, sta, params);
1370 if (err)
1371 goto out_err;
1372
1373 mutex_unlock(&local->sta_mtx);
1374
1375 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1376 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1377 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1378 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1379 sta_info_tx_streams(sta) != 1) {
1380 ht_dbg(sta->sdata,
1381 "%pM just authorized and MIMO capable - update SMPS\n",
1382 sta->sta.addr);
1383 ieee80211_send_smps_action(sta->sdata,
1384 sta->sdata->bss->req_smps,
1385 sta->sta.addr,
1386 sta->sdata->vif.bss_conf.bssid);
1387 }
1388
1389 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1390 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1391 ieee80211_recalc_ps(local);
1392 ieee80211_recalc_ps_vif(sdata);
1393 }
1394
1395 return 0;
1396 out_err:
1397 mutex_unlock(&local->sta_mtx);
1398 return err;
1399 }
1400
1401 #ifdef CONFIG_MAC80211_MESH
1402 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1403 const u8 *dst, const u8 *next_hop)
1404 {
1405 struct ieee80211_sub_if_data *sdata;
1406 struct mesh_path *mpath;
1407 struct sta_info *sta;
1408
1409 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1410
1411 rcu_read_lock();
1412 sta = sta_info_get(sdata, next_hop);
1413 if (!sta) {
1414 rcu_read_unlock();
1415 return -ENOENT;
1416 }
1417
1418 mpath = mesh_path_add(sdata, dst);
1419 if (IS_ERR(mpath)) {
1420 rcu_read_unlock();
1421 return PTR_ERR(mpath);
1422 }
1423
1424 mesh_path_fix_nexthop(mpath, sta);
1425
1426 rcu_read_unlock();
1427 return 0;
1428 }
1429
1430 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1431 const u8 *dst)
1432 {
1433 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1434
1435 if (dst)
1436 return mesh_path_del(sdata, dst);
1437
1438 mesh_path_flush_by_iface(sdata);
1439 return 0;
1440 }
1441
1442 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1443 const u8 *dst, const u8 *next_hop)
1444 {
1445 struct ieee80211_sub_if_data *sdata;
1446 struct mesh_path *mpath;
1447 struct sta_info *sta;
1448
1449 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1450
1451 rcu_read_lock();
1452
1453 sta = sta_info_get(sdata, next_hop);
1454 if (!sta) {
1455 rcu_read_unlock();
1456 return -ENOENT;
1457 }
1458
1459 mpath = mesh_path_lookup(sdata, dst);
1460 if (!mpath) {
1461 rcu_read_unlock();
1462 return -ENOENT;
1463 }
1464
1465 mesh_path_fix_nexthop(mpath, sta);
1466
1467 rcu_read_unlock();
1468 return 0;
1469 }
1470
1471 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1472 struct mpath_info *pinfo)
1473 {
1474 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1475
1476 if (next_hop_sta)
1477 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1478 else
1479 eth_zero_addr(next_hop);
1480
1481 memset(pinfo, 0, sizeof(*pinfo));
1482
1483 pinfo->generation = mesh_paths_generation;
1484
1485 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1486 MPATH_INFO_SN |
1487 MPATH_INFO_METRIC |
1488 MPATH_INFO_EXPTIME |
1489 MPATH_INFO_DISCOVERY_TIMEOUT |
1490 MPATH_INFO_DISCOVERY_RETRIES |
1491 MPATH_INFO_FLAGS;
1492
1493 pinfo->frame_qlen = mpath->frame_queue.qlen;
1494 pinfo->sn = mpath->sn;
1495 pinfo->metric = mpath->metric;
1496 if (time_before(jiffies, mpath->exp_time))
1497 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1498 pinfo->discovery_timeout =
1499 jiffies_to_msecs(mpath->discovery_timeout);
1500 pinfo->discovery_retries = mpath->discovery_retries;
1501 if (mpath->flags & MESH_PATH_ACTIVE)
1502 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1503 if (mpath->flags & MESH_PATH_RESOLVING)
1504 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1505 if (mpath->flags & MESH_PATH_SN_VALID)
1506 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1507 if (mpath->flags & MESH_PATH_FIXED)
1508 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1509 if (mpath->flags & MESH_PATH_RESOLVED)
1510 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1511 }
1512
1513 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1514 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1515
1516 {
1517 struct ieee80211_sub_if_data *sdata;
1518 struct mesh_path *mpath;
1519
1520 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1521
1522 rcu_read_lock();
1523 mpath = mesh_path_lookup(sdata, dst);
1524 if (!mpath) {
1525 rcu_read_unlock();
1526 return -ENOENT;
1527 }
1528 memcpy(dst, mpath->dst, ETH_ALEN);
1529 mpath_set_pinfo(mpath, next_hop, pinfo);
1530 rcu_read_unlock();
1531 return 0;
1532 }
1533
1534 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1535 int idx, u8 *dst, u8 *next_hop,
1536 struct mpath_info *pinfo)
1537 {
1538 struct ieee80211_sub_if_data *sdata;
1539 struct mesh_path *mpath;
1540
1541 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1542
1543 rcu_read_lock();
1544 mpath = mesh_path_lookup_by_idx(sdata, idx);
1545 if (!mpath) {
1546 rcu_read_unlock();
1547 return -ENOENT;
1548 }
1549 memcpy(dst, mpath->dst, ETH_ALEN);
1550 mpath_set_pinfo(mpath, next_hop, pinfo);
1551 rcu_read_unlock();
1552 return 0;
1553 }
1554
1555 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1556 struct mpath_info *pinfo)
1557 {
1558 memset(pinfo, 0, sizeof(*pinfo));
1559 memcpy(mpp, mpath->mpp, ETH_ALEN);
1560
1561 pinfo->generation = mpp_paths_generation;
1562 }
1563
1564 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1565 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1566
1567 {
1568 struct ieee80211_sub_if_data *sdata;
1569 struct mesh_path *mpath;
1570
1571 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1572
1573 rcu_read_lock();
1574 mpath = mpp_path_lookup(sdata, dst);
1575 if (!mpath) {
1576 rcu_read_unlock();
1577 return -ENOENT;
1578 }
1579 memcpy(dst, mpath->dst, ETH_ALEN);
1580 mpp_set_pinfo(mpath, mpp, pinfo);
1581 rcu_read_unlock();
1582 return 0;
1583 }
1584
1585 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1586 int idx, u8 *dst, u8 *mpp,
1587 struct mpath_info *pinfo)
1588 {
1589 struct ieee80211_sub_if_data *sdata;
1590 struct mesh_path *mpath;
1591
1592 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1593
1594 rcu_read_lock();
1595 mpath = mpp_path_lookup_by_idx(sdata, idx);
1596 if (!mpath) {
1597 rcu_read_unlock();
1598 return -ENOENT;
1599 }
1600 memcpy(dst, mpath->dst, ETH_ALEN);
1601 mpp_set_pinfo(mpath, mpp, pinfo);
1602 rcu_read_unlock();
1603 return 0;
1604 }
1605
1606 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1607 struct net_device *dev,
1608 struct mesh_config *conf)
1609 {
1610 struct ieee80211_sub_if_data *sdata;
1611 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1612
1613 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1614 return 0;
1615 }
1616
1617 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1618 {
1619 return (mask >> (parm-1)) & 0x1;
1620 }
1621
1622 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1623 const struct mesh_setup *setup)
1624 {
1625 u8 *new_ie;
1626 const u8 *old_ie;
1627 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1628 struct ieee80211_sub_if_data, u.mesh);
1629
1630 /* allocate information elements */
1631 new_ie = NULL;
1632 old_ie = ifmsh->ie;
1633
1634 if (setup->ie_len) {
1635 new_ie = kmemdup(setup->ie, setup->ie_len,
1636 GFP_KERNEL);
1637 if (!new_ie)
1638 return -ENOMEM;
1639 }
1640 ifmsh->ie_len = setup->ie_len;
1641 ifmsh->ie = new_ie;
1642 kfree(old_ie);
1643
1644 /* now copy the rest of the setup parameters */
1645 ifmsh->mesh_id_len = setup->mesh_id_len;
1646 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1647 ifmsh->mesh_sp_id = setup->sync_method;
1648 ifmsh->mesh_pp_id = setup->path_sel_proto;
1649 ifmsh->mesh_pm_id = setup->path_metric;
1650 ifmsh->user_mpm = setup->user_mpm;
1651 ifmsh->mesh_auth_id = setup->auth_id;
1652 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1653 if (setup->is_authenticated)
1654 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1655 if (setup->is_secure)
1656 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1657
1658 /* mcast rate setting in Mesh Node */
1659 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1660 sizeof(setup->mcast_rate));
1661 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1662
1663 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1664 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1665
1666 return 0;
1667 }
1668
1669 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1670 struct net_device *dev, u32 mask,
1671 const struct mesh_config *nconf)
1672 {
1673 struct mesh_config *conf;
1674 struct ieee80211_sub_if_data *sdata;
1675 struct ieee80211_if_mesh *ifmsh;
1676
1677 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1678 ifmsh = &sdata->u.mesh;
1679
1680 /* Set the config options which we are interested in setting */
1681 conf = &(sdata->u.mesh.mshcfg);
1682 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1683 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1684 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1685 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1686 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1687 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1688 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1689 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1690 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1691 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1692 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1693 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1694 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1695 conf->element_ttl = nconf->element_ttl;
1696 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1697 if (ifmsh->user_mpm)
1698 return -EBUSY;
1699 conf->auto_open_plinks = nconf->auto_open_plinks;
1700 }
1701 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1702 conf->dot11MeshNbrOffsetMaxNeighbor =
1703 nconf->dot11MeshNbrOffsetMaxNeighbor;
1704 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1705 conf->dot11MeshHWMPmaxPREQretries =
1706 nconf->dot11MeshHWMPmaxPREQretries;
1707 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1708 conf->path_refresh_time = nconf->path_refresh_time;
1709 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1710 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1711 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1712 conf->dot11MeshHWMPactivePathTimeout =
1713 nconf->dot11MeshHWMPactivePathTimeout;
1714 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1715 conf->dot11MeshHWMPpreqMinInterval =
1716 nconf->dot11MeshHWMPpreqMinInterval;
1717 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1718 conf->dot11MeshHWMPperrMinInterval =
1719 nconf->dot11MeshHWMPperrMinInterval;
1720 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1721 mask))
1722 conf->dot11MeshHWMPnetDiameterTraversalTime =
1723 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1724 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1725 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1726 ieee80211_mesh_root_setup(ifmsh);
1727 }
1728 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1729 /* our current gate announcement implementation rides on root
1730 * announcements, so require this ifmsh to also be a root node
1731 * */
1732 if (nconf->dot11MeshGateAnnouncementProtocol &&
1733 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1734 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1735 ieee80211_mesh_root_setup(ifmsh);
1736 }
1737 conf->dot11MeshGateAnnouncementProtocol =
1738 nconf->dot11MeshGateAnnouncementProtocol;
1739 }
1740 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1741 conf->dot11MeshHWMPRannInterval =
1742 nconf->dot11MeshHWMPRannInterval;
1743 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1744 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1745 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1746 /* our RSSI threshold implementation is supported only for
1747 * devices that report signal in dBm.
1748 */
1749 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1750 return -ENOTSUPP;
1751 conf->rssi_threshold = nconf->rssi_threshold;
1752 }
1753 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1754 conf->ht_opmode = nconf->ht_opmode;
1755 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1756 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1757 }
1758 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1759 conf->dot11MeshHWMPactivePathToRootTimeout =
1760 nconf->dot11MeshHWMPactivePathToRootTimeout;
1761 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1762 conf->dot11MeshHWMProotInterval =
1763 nconf->dot11MeshHWMProotInterval;
1764 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1765 conf->dot11MeshHWMPconfirmationInterval =
1766 nconf->dot11MeshHWMPconfirmationInterval;
1767 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1768 conf->power_mode = nconf->power_mode;
1769 ieee80211_mps_local_status_update(sdata);
1770 }
1771 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1772 conf->dot11MeshAwakeWindowDuration =
1773 nconf->dot11MeshAwakeWindowDuration;
1774 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1775 conf->plink_timeout = nconf->plink_timeout;
1776 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1777 return 0;
1778 }
1779
1780 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1781 const struct mesh_config *conf,
1782 const struct mesh_setup *setup)
1783 {
1784 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1785 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1786 int err;
1787
1788 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1789 err = copy_mesh_setup(ifmsh, setup);
1790 if (err)
1791 return err;
1792
1793 /* can mesh use other SMPS modes? */
1794 sdata->smps_mode = IEEE80211_SMPS_OFF;
1795 sdata->needed_rx_chains = sdata->local->rx_chains;
1796
1797 mutex_lock(&sdata->local->mtx);
1798 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1799 IEEE80211_CHANCTX_SHARED);
1800 mutex_unlock(&sdata->local->mtx);
1801 if (err)
1802 return err;
1803
1804 return ieee80211_start_mesh(sdata);
1805 }
1806
1807 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1808 {
1809 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1810
1811 ieee80211_stop_mesh(sdata);
1812 mutex_lock(&sdata->local->mtx);
1813 ieee80211_vif_release_channel(sdata);
1814 mutex_unlock(&sdata->local->mtx);
1815
1816 return 0;
1817 }
1818 #endif
1819
1820 static int ieee80211_change_bss(struct wiphy *wiphy,
1821 struct net_device *dev,
1822 struct bss_parameters *params)
1823 {
1824 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1825 enum ieee80211_band band;
1826 u32 changed = 0;
1827
1828 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1829 return -ENOENT;
1830
1831 band = ieee80211_get_sdata_band(sdata);
1832
1833 if (params->use_cts_prot >= 0) {
1834 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1835 changed |= BSS_CHANGED_ERP_CTS_PROT;
1836 }
1837 if (params->use_short_preamble >= 0) {
1838 sdata->vif.bss_conf.use_short_preamble =
1839 params->use_short_preamble;
1840 changed |= BSS_CHANGED_ERP_PREAMBLE;
1841 }
1842
1843 if (!sdata->vif.bss_conf.use_short_slot &&
1844 band == IEEE80211_BAND_5GHZ) {
1845 sdata->vif.bss_conf.use_short_slot = true;
1846 changed |= BSS_CHANGED_ERP_SLOT;
1847 }
1848
1849 if (params->use_short_slot_time >= 0) {
1850 sdata->vif.bss_conf.use_short_slot =
1851 params->use_short_slot_time;
1852 changed |= BSS_CHANGED_ERP_SLOT;
1853 }
1854
1855 if (params->basic_rates) {
1856 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1857 wiphy->bands[band],
1858 params->basic_rates,
1859 params->basic_rates_len,
1860 &sdata->vif.bss_conf.basic_rates);
1861 changed |= BSS_CHANGED_BASIC_RATES;
1862 }
1863
1864 if (params->ap_isolate >= 0) {
1865 if (params->ap_isolate)
1866 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1867 else
1868 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1869 }
1870
1871 if (params->ht_opmode >= 0) {
1872 sdata->vif.bss_conf.ht_operation_mode =
1873 (u16) params->ht_opmode;
1874 changed |= BSS_CHANGED_HT;
1875 }
1876
1877 if (params->p2p_ctwindow >= 0) {
1878 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1879 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1880 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1881 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1882 changed |= BSS_CHANGED_P2P_PS;
1883 }
1884
1885 if (params->p2p_opp_ps > 0) {
1886 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1887 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1888 changed |= BSS_CHANGED_P2P_PS;
1889 } else if (params->p2p_opp_ps == 0) {
1890 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1891 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1892 changed |= BSS_CHANGED_P2P_PS;
1893 }
1894
1895 ieee80211_bss_info_change_notify(sdata, changed);
1896
1897 return 0;
1898 }
1899
1900 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1901 struct net_device *dev,
1902 struct ieee80211_txq_params *params)
1903 {
1904 struct ieee80211_local *local = wiphy_priv(wiphy);
1905 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1906 struct ieee80211_tx_queue_params p;
1907
1908 if (!local->ops->conf_tx)
1909 return -EOPNOTSUPP;
1910
1911 if (local->hw.queues < IEEE80211_NUM_ACS)
1912 return -EOPNOTSUPP;
1913
1914 memset(&p, 0, sizeof(p));
1915 p.aifs = params->aifs;
1916 p.cw_max = params->cwmax;
1917 p.cw_min = params->cwmin;
1918 p.txop = params->txop;
1919
1920 /*
1921 * Setting tx queue params disables u-apsd because it's only
1922 * called in master mode.
1923 */
1924 p.uapsd = false;
1925
1926 sdata->tx_conf[params->ac] = p;
1927 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1928 wiphy_debug(local->hw.wiphy,
1929 "failed to set TX queue parameters for AC %d\n",
1930 params->ac);
1931 return -EINVAL;
1932 }
1933
1934 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1935
1936 return 0;
1937 }
1938
1939 #ifdef CONFIG_PM
1940 static int ieee80211_suspend(struct wiphy *wiphy,
1941 struct cfg80211_wowlan *wowlan)
1942 {
1943 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1944 }
1945
1946 static int ieee80211_resume(struct wiphy *wiphy)
1947 {
1948 return __ieee80211_resume(wiphy_priv(wiphy));
1949 }
1950 #else
1951 #define ieee80211_suspend NULL
1952 #define ieee80211_resume NULL
1953 #endif
1954
1955 static int ieee80211_scan(struct wiphy *wiphy,
1956 struct cfg80211_scan_request *req)
1957 {
1958 struct ieee80211_sub_if_data *sdata;
1959
1960 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1961
1962 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1963 case NL80211_IFTYPE_STATION:
1964 case NL80211_IFTYPE_ADHOC:
1965 case NL80211_IFTYPE_MESH_POINT:
1966 case NL80211_IFTYPE_P2P_CLIENT:
1967 case NL80211_IFTYPE_P2P_DEVICE:
1968 break;
1969 case NL80211_IFTYPE_P2P_GO:
1970 if (sdata->local->ops->hw_scan)
1971 break;
1972 /*
1973 * FIXME: implement NoA while scanning in software,
1974 * for now fall through to allow scanning only when
1975 * beaconing hasn't been configured yet
1976 */
1977 case NL80211_IFTYPE_AP:
1978 /*
1979 * If the scan has been forced (and the driver supports
1980 * forcing), don't care about being beaconing already.
1981 * This will create problems to the attached stations (e.g. all
1982 * the frames sent while scanning on other channel will be
1983 * lost)
1984 */
1985 if (sdata->u.ap.beacon &&
1986 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1987 !(req->flags & NL80211_SCAN_FLAG_AP)))
1988 return -EOPNOTSUPP;
1989 break;
1990 default:
1991 return -EOPNOTSUPP;
1992 }
1993
1994 return ieee80211_request_scan(sdata, req);
1995 }
1996
1997 static int
1998 ieee80211_sched_scan_start(struct wiphy *wiphy,
1999 struct net_device *dev,
2000 struct cfg80211_sched_scan_request *req)
2001 {
2002 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2003
2004 if (!sdata->local->ops->sched_scan_start)
2005 return -EOPNOTSUPP;
2006
2007 return ieee80211_request_sched_scan_start(sdata, req);
2008 }
2009
2010 static int
2011 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2012 {
2013 struct ieee80211_local *local = wiphy_priv(wiphy);
2014
2015 if (!local->ops->sched_scan_stop)
2016 return -EOPNOTSUPP;
2017
2018 return ieee80211_request_sched_scan_stop(local);
2019 }
2020
2021 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2022 struct cfg80211_auth_request *req)
2023 {
2024 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2025 }
2026
2027 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2028 struct cfg80211_assoc_request *req)
2029 {
2030 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2031 }
2032
2033 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2034 struct cfg80211_deauth_request *req)
2035 {
2036 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2037 }
2038
2039 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2040 struct cfg80211_disassoc_request *req)
2041 {
2042 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2043 }
2044
2045 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2046 struct cfg80211_ibss_params *params)
2047 {
2048 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2049 }
2050
2051 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2052 {
2053 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2054 }
2055
2056 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2057 struct ocb_setup *setup)
2058 {
2059 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2060 }
2061
2062 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2063 {
2064 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2065 }
2066
2067 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2068 int rate[IEEE80211_NUM_BANDS])
2069 {
2070 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2071
2072 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2073 sizeof(int) * IEEE80211_NUM_BANDS);
2074
2075 return 0;
2076 }
2077
2078 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2079 {
2080 struct ieee80211_local *local = wiphy_priv(wiphy);
2081 int err;
2082
2083 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2084 ieee80211_check_fast_xmit_all(local);
2085
2086 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2087
2088 if (err) {
2089 ieee80211_check_fast_xmit_all(local);
2090 return err;
2091 }
2092 }
2093
2094 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2095 (changed & WIPHY_PARAM_DYN_ACK)) {
2096 s16 coverage_class;
2097
2098 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2099 wiphy->coverage_class : -1;
2100 err = drv_set_coverage_class(local, coverage_class);
2101
2102 if (err)
2103 return err;
2104 }
2105
2106 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2107 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2108
2109 if (err)
2110 return err;
2111 }
2112
2113 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2114 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2115 return -EINVAL;
2116 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2117 }
2118 if (changed & WIPHY_PARAM_RETRY_LONG) {
2119 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2120 return -EINVAL;
2121 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2122 }
2123 if (changed &
2124 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2125 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2126
2127 return 0;
2128 }
2129
2130 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2131 struct wireless_dev *wdev,
2132 enum nl80211_tx_power_setting type, int mbm)
2133 {
2134 struct ieee80211_local *local = wiphy_priv(wiphy);
2135 struct ieee80211_sub_if_data *sdata;
2136 enum nl80211_tx_power_setting txp_type = type;
2137 bool update_txp_type = false;
2138
2139 if (wdev) {
2140 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2141
2142 switch (type) {
2143 case NL80211_TX_POWER_AUTOMATIC:
2144 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2145 txp_type = NL80211_TX_POWER_LIMITED;
2146 break;
2147 case NL80211_TX_POWER_LIMITED:
2148 case NL80211_TX_POWER_FIXED:
2149 if (mbm < 0 || (mbm % 100))
2150 return -EOPNOTSUPP;
2151 sdata->user_power_level = MBM_TO_DBM(mbm);
2152 break;
2153 }
2154
2155 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2156 update_txp_type = true;
2157 sdata->vif.bss_conf.txpower_type = txp_type;
2158 }
2159
2160 ieee80211_recalc_txpower(sdata, update_txp_type);
2161
2162 return 0;
2163 }
2164
2165 switch (type) {
2166 case NL80211_TX_POWER_AUTOMATIC:
2167 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2168 txp_type = NL80211_TX_POWER_LIMITED;
2169 break;
2170 case NL80211_TX_POWER_LIMITED:
2171 case NL80211_TX_POWER_FIXED:
2172 if (mbm < 0 || (mbm % 100))
2173 return -EOPNOTSUPP;
2174 local->user_power_level = MBM_TO_DBM(mbm);
2175 break;
2176 }
2177
2178 mutex_lock(&local->iflist_mtx);
2179 list_for_each_entry(sdata, &local->interfaces, list) {
2180 sdata->user_power_level = local->user_power_level;
2181 if (txp_type != sdata->vif.bss_conf.txpower_type)
2182 update_txp_type = true;
2183 sdata->vif.bss_conf.txpower_type = txp_type;
2184 }
2185 list_for_each_entry(sdata, &local->interfaces, list)
2186 ieee80211_recalc_txpower(sdata, update_txp_type);
2187 mutex_unlock(&local->iflist_mtx);
2188
2189 return 0;
2190 }
2191
2192 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2193 struct wireless_dev *wdev,
2194 int *dbm)
2195 {
2196 struct ieee80211_local *local = wiphy_priv(wiphy);
2197 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2198
2199 if (local->ops->get_txpower)
2200 return drv_get_txpower(local, sdata, dbm);
2201
2202 if (!local->use_chanctx)
2203 *dbm = local->hw.conf.power_level;
2204 else
2205 *dbm = sdata->vif.bss_conf.txpower;
2206
2207 return 0;
2208 }
2209
2210 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2211 const u8 *addr)
2212 {
2213 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2214
2215 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2216
2217 return 0;
2218 }
2219
2220 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2221 {
2222 struct ieee80211_local *local = wiphy_priv(wiphy);
2223
2224 drv_rfkill_poll(local);
2225 }
2226
2227 #ifdef CONFIG_NL80211_TESTMODE
2228 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2229 struct wireless_dev *wdev,
2230 void *data, int len)
2231 {
2232 struct ieee80211_local *local = wiphy_priv(wiphy);
2233 struct ieee80211_vif *vif = NULL;
2234
2235 if (!local->ops->testmode_cmd)
2236 return -EOPNOTSUPP;
2237
2238 if (wdev) {
2239 struct ieee80211_sub_if_data *sdata;
2240
2241 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2242 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2243 vif = &sdata->vif;
2244 }
2245
2246 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2247 }
2248
2249 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2250 struct sk_buff *skb,
2251 struct netlink_callback *cb,
2252 void *data, int len)
2253 {
2254 struct ieee80211_local *local = wiphy_priv(wiphy);
2255
2256 if (!local->ops->testmode_dump)
2257 return -EOPNOTSUPP;
2258
2259 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2260 }
2261 #endif
2262
2263 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2264 enum ieee80211_smps_mode smps_mode)
2265 {
2266 struct sta_info *sta;
2267 enum ieee80211_smps_mode old_req;
2268
2269 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2270 return -EINVAL;
2271
2272 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2273 return 0;
2274
2275 old_req = sdata->u.ap.req_smps;
2276 sdata->u.ap.req_smps = smps_mode;
2277
2278 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2279 if (old_req == smps_mode ||
2280 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2281 return 0;
2282
2283 /* If no associated stations, there's no need to do anything */
2284 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2285 sdata->smps_mode = smps_mode;
2286 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2287 return 0;
2288 }
2289
2290 ht_dbg(sdata,
2291 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2292 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2293
2294 mutex_lock(&sdata->local->sta_mtx);
2295 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2296 /*
2297 * Only stations associated to our AP and
2298 * associated VLANs
2299 */
2300 if (sta->sdata->bss != &sdata->u.ap)
2301 continue;
2302
2303 /* This station doesn't support MIMO - skip it */
2304 if (sta_info_tx_streams(sta) == 1)
2305 continue;
2306
2307 /*
2308 * Don't wake up a STA just to send the action frame
2309 * unless we are getting more restrictive.
2310 */
2311 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2312 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2313 smps_mode)) {
2314 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2315 sta->sta.addr);
2316 continue;
2317 }
2318
2319 /*
2320 * If the STA is not authorized, wait until it gets
2321 * authorized and the action frame will be sent then.
2322 */
2323 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2324 continue;
2325
2326 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2327 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2328 sdata->vif.bss_conf.bssid);
2329 }
2330 mutex_unlock(&sdata->local->sta_mtx);
2331
2332 sdata->smps_mode = smps_mode;
2333 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2334
2335 return 0;
2336 }
2337
2338 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2339 enum ieee80211_smps_mode smps_mode)
2340 {
2341 const u8 *ap;
2342 enum ieee80211_smps_mode old_req;
2343 int err;
2344 struct sta_info *sta;
2345 bool tdls_peer_found = false;
2346
2347 lockdep_assert_held(&sdata->wdev.mtx);
2348
2349 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2350 return -EINVAL;
2351
2352 old_req = sdata->u.mgd.req_smps;
2353 sdata->u.mgd.req_smps = smps_mode;
2354
2355 if (old_req == smps_mode &&
2356 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2357 return 0;
2358
2359 /*
2360 * If not associated, or current association is not an HT
2361 * association, there's no need to do anything, just store
2362 * the new value until we associate.
2363 */
2364 if (!sdata->u.mgd.associated ||
2365 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2366 return 0;
2367
2368 ap = sdata->u.mgd.associated->bssid;
2369
2370 rcu_read_lock();
2371 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2372 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2373 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2374 continue;
2375
2376 tdls_peer_found = true;
2377 break;
2378 }
2379 rcu_read_unlock();
2380
2381 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2382 if (tdls_peer_found || !sdata->u.mgd.powersave)
2383 smps_mode = IEEE80211_SMPS_OFF;
2384 else
2385 smps_mode = IEEE80211_SMPS_DYNAMIC;
2386 }
2387
2388 /* send SM PS frame to AP */
2389 err = ieee80211_send_smps_action(sdata, smps_mode,
2390 ap, ap);
2391 if (err)
2392 sdata->u.mgd.req_smps = old_req;
2393 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2394 ieee80211_teardown_tdls_peers(sdata);
2395
2396 return err;
2397 }
2398
2399 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2400 bool enabled, int timeout)
2401 {
2402 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2403 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2404
2405 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2406 return -EOPNOTSUPP;
2407
2408 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2409 return -EOPNOTSUPP;
2410
2411 if (enabled == sdata->u.mgd.powersave &&
2412 timeout == local->dynamic_ps_forced_timeout)
2413 return 0;
2414
2415 sdata->u.mgd.powersave = enabled;
2416 local->dynamic_ps_forced_timeout = timeout;
2417
2418 /* no change, but if automatic follow powersave */
2419 sdata_lock(sdata);
2420 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2421 sdata_unlock(sdata);
2422
2423 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2424 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2425
2426 ieee80211_recalc_ps(local);
2427 ieee80211_recalc_ps_vif(sdata);
2428
2429 return 0;
2430 }
2431
2432 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2433 struct net_device *dev,
2434 s32 rssi_thold, u32 rssi_hyst)
2435 {
2436 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2437 struct ieee80211_vif *vif = &sdata->vif;
2438 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2439
2440 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2441 rssi_hyst == bss_conf->cqm_rssi_hyst)
2442 return 0;
2443
2444 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2445 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2446 return -EOPNOTSUPP;
2447
2448 bss_conf->cqm_rssi_thold = rssi_thold;
2449 bss_conf->cqm_rssi_hyst = rssi_hyst;
2450 sdata->u.mgd.last_cqm_event_signal = 0;
2451
2452 /* tell the driver upon association, unless already associated */
2453 if (sdata->u.mgd.associated &&
2454 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2455 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2456
2457 return 0;
2458 }
2459
2460 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2461 struct net_device *dev,
2462 const u8 *addr,
2463 const struct cfg80211_bitrate_mask *mask)
2464 {
2465 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2466 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2467 int i, ret;
2468
2469 if (!ieee80211_sdata_running(sdata))
2470 return -ENETDOWN;
2471
2472 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2473 ret = drv_set_bitrate_mask(local, sdata, mask);
2474 if (ret)
2475 return ret;
2476 }
2477
2478 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2479 struct ieee80211_supported_band *sband = wiphy->bands[i];
2480 int j;
2481
2482 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2483 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2484 sizeof(mask->control[i].ht_mcs));
2485 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2486 mask->control[i].vht_mcs,
2487 sizeof(mask->control[i].vht_mcs));
2488
2489 sdata->rc_has_mcs_mask[i] = false;
2490 sdata->rc_has_vht_mcs_mask[i] = false;
2491 if (!sband)
2492 continue;
2493
2494 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2495 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2496 sdata->rc_has_mcs_mask[i] = true;
2497 break;
2498 }
2499 }
2500
2501 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2502 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2503 sdata->rc_has_vht_mcs_mask[i] = true;
2504 break;
2505 }
2506 }
2507 }
2508
2509 return 0;
2510 }
2511
2512 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2513 struct ieee80211_roc_work *new_roc,
2514 struct ieee80211_roc_work *cur_roc)
2515 {
2516 unsigned long now = jiffies;
2517 unsigned long remaining = cur_roc->hw_start_time +
2518 msecs_to_jiffies(cur_roc->duration) -
2519 now;
2520
2521 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2522 return false;
2523
2524 /* if it doesn't fit entirely, schedule a new one */
2525 if (new_roc->duration > jiffies_to_msecs(remaining))
2526 return false;
2527
2528 ieee80211_handle_roc_started(new_roc);
2529
2530 /* add to dependents so we send the expired event properly */
2531 list_add_tail(&new_roc->list, &cur_roc->dependents);
2532 return true;
2533 }
2534
2535 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2536 {
2537 lockdep_assert_held(&local->mtx);
2538
2539 local->roc_cookie_counter++;
2540
2541 /* wow, you wrapped 64 bits ... more likely a bug */
2542 if (WARN_ON(local->roc_cookie_counter == 0))
2543 local->roc_cookie_counter++;
2544
2545 return local->roc_cookie_counter;
2546 }
2547
2548 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2549 struct ieee80211_sub_if_data *sdata,
2550 struct ieee80211_channel *channel,
2551 unsigned int duration, u64 *cookie,
2552 struct sk_buff *txskb,
2553 enum ieee80211_roc_type type)
2554 {
2555 struct ieee80211_roc_work *roc, *tmp;
2556 bool queued = false;
2557 int ret;
2558
2559 lockdep_assert_held(&local->mtx);
2560
2561 if (local->use_chanctx && !local->ops->remain_on_channel)
2562 return -EOPNOTSUPP;
2563
2564 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2565 if (!roc)
2566 return -ENOMEM;
2567
2568 /*
2569 * If the duration is zero, then the driver
2570 * wouldn't actually do anything. Set it to
2571 * 10 for now.
2572 *
2573 * TODO: cancel the off-channel operation
2574 * when we get the SKB's TX status and
2575 * the wait time was zero before.
2576 */
2577 if (!duration)
2578 duration = 10;
2579
2580 roc->chan = channel;
2581 roc->duration = duration;
2582 roc->req_duration = duration;
2583 roc->frame = txskb;
2584 roc->type = type;
2585 roc->sdata = sdata;
2586 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2587 INIT_LIST_HEAD(&roc->dependents);
2588
2589 /*
2590 * cookie is either the roc cookie (for normal roc)
2591 * or the SKB (for mgmt TX)
2592 */
2593 if (!txskb) {
2594 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2595 *cookie = roc->cookie;
2596 } else {
2597 roc->mgmt_tx_cookie = *cookie;
2598 }
2599
2600 /* if there's one pending or we're scanning, queue this one */
2601 if (!list_empty(&local->roc_list) ||
2602 local->scanning || ieee80211_is_radar_required(local))
2603 goto out_check_combine;
2604
2605 /* if not HW assist, just queue & schedule work */
2606 if (!local->ops->remain_on_channel) {
2607 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2608 goto out_queue;
2609 }
2610
2611 /* otherwise actually kick it off here (for error handling) */
2612
2613 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2614 if (ret) {
2615 kfree(roc);
2616 return ret;
2617 }
2618
2619 roc->started = true;
2620 goto out_queue;
2621
2622 out_check_combine:
2623 list_for_each_entry(tmp, &local->roc_list, list) {
2624 if (tmp->chan != channel || tmp->sdata != sdata)
2625 continue;
2626
2627 /*
2628 * Extend this ROC if possible:
2629 *
2630 * If it hasn't started yet, just increase the duration
2631 * and add the new one to the list of dependents.
2632 * If the type of the new ROC has higher priority, modify the
2633 * type of the previous one to match that of the new one.
2634 */
2635 if (!tmp->started) {
2636 list_add_tail(&roc->list, &tmp->dependents);
2637 tmp->duration = max(tmp->duration, roc->duration);
2638 tmp->type = max(tmp->type, roc->type);
2639 queued = true;
2640 break;
2641 }
2642
2643 /* If it has already started, it's more difficult ... */
2644 if (local->ops->remain_on_channel) {
2645 /*
2646 * In the offloaded ROC case, if it hasn't begun, add
2647 * this new one to the dependent list to be handled
2648 * when the master one begins. If it has begun,
2649 * check if it fits entirely within the existing one,
2650 * in which case it will just be dependent as well.
2651 * Otherwise, schedule it by itself.
2652 */
2653 if (!tmp->hw_begun) {
2654 list_add_tail(&roc->list, &tmp->dependents);
2655 queued = true;
2656 break;
2657 }
2658
2659 if (ieee80211_coalesce_started_roc(local, roc, tmp))
2660 queued = true;
2661 } else if (del_timer_sync(&tmp->work.timer)) {
2662 unsigned long new_end;
2663
2664 /*
2665 * In the software ROC case, cancel the timer, if
2666 * that fails then the finish work is already
2667 * queued/pending and thus we queue the new ROC
2668 * normally, if that succeeds then we can extend
2669 * the timer duration and TX the frame (if any.)
2670 */
2671
2672 list_add_tail(&roc->list, &tmp->dependents);
2673 queued = true;
2674
2675 new_end = jiffies + msecs_to_jiffies(roc->duration);
2676
2677 /* ok, it was started & we canceled timer */
2678 if (time_after(new_end, tmp->work.timer.expires))
2679 mod_timer(&tmp->work.timer, new_end);
2680 else
2681 add_timer(&tmp->work.timer);
2682
2683 ieee80211_handle_roc_started(roc);
2684 }
2685 break;
2686 }
2687
2688 out_queue:
2689 if (!queued)
2690 list_add_tail(&roc->list, &local->roc_list);
2691
2692 return 0;
2693 }
2694
2695 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2696 struct wireless_dev *wdev,
2697 struct ieee80211_channel *chan,
2698 unsigned int duration,
2699 u64 *cookie)
2700 {
2701 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2702 struct ieee80211_local *local = sdata->local;
2703 int ret;
2704
2705 mutex_lock(&local->mtx);
2706 ret = ieee80211_start_roc_work(local, sdata, chan,
2707 duration, cookie, NULL,
2708 IEEE80211_ROC_TYPE_NORMAL);
2709 mutex_unlock(&local->mtx);
2710
2711 return ret;
2712 }
2713
2714 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2715 u64 cookie, bool mgmt_tx)
2716 {
2717 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2718 int ret;
2719
2720 mutex_lock(&local->mtx);
2721 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2722 struct ieee80211_roc_work *dep, *tmp2;
2723
2724 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2725 if (!mgmt_tx && dep->cookie != cookie)
2726 continue;
2727 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2728 continue;
2729 /* found dependent item -- just remove it */
2730 list_del(&dep->list);
2731 mutex_unlock(&local->mtx);
2732
2733 ieee80211_roc_notify_destroy(dep, true);
2734 return 0;
2735 }
2736
2737 if (!mgmt_tx && roc->cookie != cookie)
2738 continue;
2739 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2740 continue;
2741
2742 found = roc;
2743 break;
2744 }
2745
2746 if (!found) {
2747 mutex_unlock(&local->mtx);
2748 return -ENOENT;
2749 }
2750
2751 /*
2752 * We found the item to cancel, so do that. Note that it
2753 * may have dependents, which we also cancel (and send
2754 * the expired signal for.) Not doing so would be quite
2755 * tricky here, but we may need to fix it later.
2756 */
2757
2758 if (local->ops->remain_on_channel) {
2759 if (found->started) {
2760 ret = drv_cancel_remain_on_channel(local);
2761 if (WARN_ON_ONCE(ret)) {
2762 mutex_unlock(&local->mtx);
2763 return ret;
2764 }
2765 }
2766
2767 list_del(&found->list);
2768
2769 if (found->started)
2770 ieee80211_start_next_roc(local);
2771 mutex_unlock(&local->mtx);
2772
2773 ieee80211_roc_notify_destroy(found, true);
2774 } else {
2775 /* work may be pending so use it all the time */
2776 found->abort = true;
2777 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2778
2779 mutex_unlock(&local->mtx);
2780
2781 /* work will clean up etc */
2782 flush_delayed_work(&found->work);
2783 WARN_ON(!found->to_be_freed);
2784 kfree(found);
2785 }
2786
2787 return 0;
2788 }
2789
2790 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2791 struct wireless_dev *wdev,
2792 u64 cookie)
2793 {
2794 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2795 struct ieee80211_local *local = sdata->local;
2796
2797 return ieee80211_cancel_roc(local, cookie, false);
2798 }
2799
2800 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2801 struct net_device *dev,
2802 struct cfg80211_chan_def *chandef,
2803 u32 cac_time_ms)
2804 {
2805 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2806 struct ieee80211_local *local = sdata->local;
2807 int err;
2808
2809 mutex_lock(&local->mtx);
2810 if (!list_empty(&local->roc_list) || local->scanning) {
2811 err = -EBUSY;
2812 goto out_unlock;
2813 }
2814
2815 /* whatever, but channel contexts should not complain about that one */
2816 sdata->smps_mode = IEEE80211_SMPS_OFF;
2817 sdata->needed_rx_chains = local->rx_chains;
2818
2819 err = ieee80211_vif_use_channel(sdata, chandef,
2820 IEEE80211_CHANCTX_SHARED);
2821 if (err)
2822 goto out_unlock;
2823
2824 ieee80211_queue_delayed_work(&sdata->local->hw,
2825 &sdata->dfs_cac_timer_work,
2826 msecs_to_jiffies(cac_time_ms));
2827
2828 out_unlock:
2829 mutex_unlock(&local->mtx);
2830 return err;
2831 }
2832
2833 static struct cfg80211_beacon_data *
2834 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2835 {
2836 struct cfg80211_beacon_data *new_beacon;
2837 u8 *pos;
2838 int len;
2839
2840 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2841 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2842 beacon->probe_resp_len;
2843
2844 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2845 if (!new_beacon)
2846 return NULL;
2847
2848 pos = (u8 *)(new_beacon + 1);
2849 if (beacon->head_len) {
2850 new_beacon->head_len = beacon->head_len;
2851 new_beacon->head = pos;
2852 memcpy(pos, beacon->head, beacon->head_len);
2853 pos += beacon->head_len;
2854 }
2855 if (beacon->tail_len) {
2856 new_beacon->tail_len = beacon->tail_len;
2857 new_beacon->tail = pos;
2858 memcpy(pos, beacon->tail, beacon->tail_len);
2859 pos += beacon->tail_len;
2860 }
2861 if (beacon->beacon_ies_len) {
2862 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2863 new_beacon->beacon_ies = pos;
2864 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2865 pos += beacon->beacon_ies_len;
2866 }
2867 if (beacon->proberesp_ies_len) {
2868 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2869 new_beacon->proberesp_ies = pos;
2870 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2871 pos += beacon->proberesp_ies_len;
2872 }
2873 if (beacon->assocresp_ies_len) {
2874 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2875 new_beacon->assocresp_ies = pos;
2876 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2877 pos += beacon->assocresp_ies_len;
2878 }
2879 if (beacon->probe_resp_len) {
2880 new_beacon->probe_resp_len = beacon->probe_resp_len;
2881 beacon->probe_resp = pos;
2882 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2883 pos += beacon->probe_resp_len;
2884 }
2885
2886 return new_beacon;
2887 }
2888
2889 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2890 {
2891 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2892
2893 ieee80211_queue_work(&sdata->local->hw,
2894 &sdata->csa_finalize_work);
2895 }
2896 EXPORT_SYMBOL(ieee80211_csa_finish);
2897
2898 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2899 u32 *changed)
2900 {
2901 int err;
2902
2903 switch (sdata->vif.type) {
2904 case NL80211_IFTYPE_AP:
2905 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2906 NULL);
2907 kfree(sdata->u.ap.next_beacon);
2908 sdata->u.ap.next_beacon = NULL;
2909
2910 if (err < 0)
2911 return err;
2912 *changed |= err;
2913 break;
2914 case NL80211_IFTYPE_ADHOC:
2915 err = ieee80211_ibss_finish_csa(sdata);
2916 if (err < 0)
2917 return err;
2918 *changed |= err;
2919 break;
2920 #ifdef CONFIG_MAC80211_MESH
2921 case NL80211_IFTYPE_MESH_POINT:
2922 err = ieee80211_mesh_finish_csa(sdata);
2923 if (err < 0)
2924 return err;
2925 *changed |= err;
2926 break;
2927 #endif
2928 default:
2929 WARN_ON(1);
2930 return -EINVAL;
2931 }
2932
2933 return 0;
2934 }
2935
2936 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2937 {
2938 struct ieee80211_local *local = sdata->local;
2939 u32 changed = 0;
2940 int err;
2941
2942 sdata_assert_lock(sdata);
2943 lockdep_assert_held(&local->mtx);
2944 lockdep_assert_held(&local->chanctx_mtx);
2945
2946 /*
2947 * using reservation isn't immediate as it may be deferred until later
2948 * with multi-vif. once reservation is complete it will re-schedule the
2949 * work with no reserved_chanctx so verify chandef to check if it
2950 * completed successfully
2951 */
2952
2953 if (sdata->reserved_chanctx) {
2954 /*
2955 * with multi-vif csa driver may call ieee80211_csa_finish()
2956 * many times while waiting for other interfaces to use their
2957 * reservations
2958 */
2959 if (sdata->reserved_ready)
2960 return 0;
2961
2962 return ieee80211_vif_use_reserved_context(sdata);
2963 }
2964
2965 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2966 &sdata->csa_chandef))
2967 return -EINVAL;
2968
2969 sdata->vif.csa_active = false;
2970
2971 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2972 if (err)
2973 return err;
2974
2975 ieee80211_bss_info_change_notify(sdata, changed);
2976
2977 if (sdata->csa_block_tx) {
2978 ieee80211_wake_vif_queues(local, sdata,
2979 IEEE80211_QUEUE_STOP_REASON_CSA);
2980 sdata->csa_block_tx = false;
2981 }
2982
2983 err = drv_post_channel_switch(sdata);
2984 if (err)
2985 return err;
2986
2987 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2988
2989 return 0;
2990 }
2991
2992 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2993 {
2994 if (__ieee80211_csa_finalize(sdata)) {
2995 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2996 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2997 GFP_KERNEL);
2998 }
2999 }
3000
3001 void ieee80211_csa_finalize_work(struct work_struct *work)
3002 {
3003 struct ieee80211_sub_if_data *sdata =
3004 container_of(work, struct ieee80211_sub_if_data,
3005 csa_finalize_work);
3006 struct ieee80211_local *local = sdata->local;
3007
3008 sdata_lock(sdata);
3009 mutex_lock(&local->mtx);
3010 mutex_lock(&local->chanctx_mtx);
3011
3012 /* AP might have been stopped while waiting for the lock. */
3013 if (!sdata->vif.csa_active)
3014 goto unlock;
3015
3016 if (!ieee80211_sdata_running(sdata))
3017 goto unlock;
3018
3019 ieee80211_csa_finalize(sdata);
3020
3021 unlock:
3022 mutex_unlock(&local->chanctx_mtx);
3023 mutex_unlock(&local->mtx);
3024 sdata_unlock(sdata);
3025 }
3026
3027 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3028 struct cfg80211_csa_settings *params,
3029 u32 *changed)
3030 {
3031 struct ieee80211_csa_settings csa = {};
3032 int err;
3033
3034 switch (sdata->vif.type) {
3035 case NL80211_IFTYPE_AP:
3036 sdata->u.ap.next_beacon =
3037 cfg80211_beacon_dup(&params->beacon_after);
3038 if (!sdata->u.ap.next_beacon)
3039 return -ENOMEM;
3040
3041 /*
3042 * With a count of 0, we don't have to wait for any
3043 * TBTT before switching, so complete the CSA
3044 * immediately. In theory, with a count == 1 we
3045 * should delay the switch until just before the next
3046 * TBTT, but that would complicate things so we switch
3047 * immediately too. If we would delay the switch
3048 * until the next TBTT, we would have to set the probe
3049 * response here.
3050 *
3051 * TODO: A channel switch with count <= 1 without
3052 * sending a CSA action frame is kind of useless,
3053 * because the clients won't know we're changing
3054 * channels. The action frame must be implemented
3055 * either here or in the userspace.
3056 */
3057 if (params->count <= 1)
3058 break;
3059
3060 if ((params->n_counter_offsets_beacon >
3061 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3062 (params->n_counter_offsets_presp >
3063 IEEE80211_MAX_CSA_COUNTERS_NUM))
3064 return -EINVAL;
3065
3066 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3067 csa.counter_offsets_presp = params->counter_offsets_presp;
3068 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3069 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3070 csa.count = params->count;
3071
3072 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3073 if (err < 0) {
3074 kfree(sdata->u.ap.next_beacon);
3075 return err;
3076 }
3077 *changed |= err;
3078
3079 break;
3080 case NL80211_IFTYPE_ADHOC:
3081 if (!sdata->vif.bss_conf.ibss_joined)
3082 return -EINVAL;
3083
3084 if (params->chandef.width != sdata->u.ibss.chandef.width)
3085 return -EINVAL;
3086
3087 switch (params->chandef.width) {
3088 case NL80211_CHAN_WIDTH_40:
3089 if (cfg80211_get_chandef_type(&params->chandef) !=
3090 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3091 return -EINVAL;
3092 case NL80211_CHAN_WIDTH_5:
3093 case NL80211_CHAN_WIDTH_10:
3094 case NL80211_CHAN_WIDTH_20_NOHT:
3095 case NL80211_CHAN_WIDTH_20:
3096 break;
3097 default:
3098 return -EINVAL;
3099 }
3100
3101 /* changes into another band are not supported */
3102 if (sdata->u.ibss.chandef.chan->band !=
3103 params->chandef.chan->band)
3104 return -EINVAL;
3105
3106 /* see comments in the NL80211_IFTYPE_AP block */
3107 if (params->count > 1) {
3108 err = ieee80211_ibss_csa_beacon(sdata, params);
3109 if (err < 0)
3110 return err;
3111 *changed |= err;
3112 }
3113
3114 ieee80211_send_action_csa(sdata, params);
3115
3116 break;
3117 #ifdef CONFIG_MAC80211_MESH
3118 case NL80211_IFTYPE_MESH_POINT: {
3119 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3120
3121 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3122 return -EINVAL;
3123
3124 /* changes into another band are not supported */
3125 if (sdata->vif.bss_conf.chandef.chan->band !=
3126 params->chandef.chan->band)
3127 return -EINVAL;
3128
3129 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3130 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3131 if (!ifmsh->pre_value)
3132 ifmsh->pre_value = 1;
3133 else
3134 ifmsh->pre_value++;
3135 }
3136
3137 /* see comments in the NL80211_IFTYPE_AP block */
3138 if (params->count > 1) {
3139 err = ieee80211_mesh_csa_beacon(sdata, params);
3140 if (err < 0) {
3141 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3142 return err;
3143 }
3144 *changed |= err;
3145 }
3146
3147 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3148 ieee80211_send_action_csa(sdata, params);
3149
3150 break;
3151 }
3152 #endif
3153 default:
3154 return -EOPNOTSUPP;
3155 }
3156
3157 return 0;
3158 }
3159
3160 static int
3161 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3162 struct cfg80211_csa_settings *params)
3163 {
3164 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3165 struct ieee80211_local *local = sdata->local;
3166 struct ieee80211_channel_switch ch_switch;
3167 struct ieee80211_chanctx_conf *conf;
3168 struct ieee80211_chanctx *chanctx;
3169 u32 changed = 0;
3170 int err;
3171
3172 sdata_assert_lock(sdata);
3173 lockdep_assert_held(&local->mtx);
3174
3175 if (!list_empty(&local->roc_list) || local->scanning)
3176 return -EBUSY;
3177
3178 if (sdata->wdev.cac_started)
3179 return -EBUSY;
3180
3181 if (cfg80211_chandef_identical(&params->chandef,
3182 &sdata->vif.bss_conf.chandef))
3183 return -EINVAL;
3184
3185 /* don't allow another channel switch if one is already active. */
3186 if (sdata->vif.csa_active)
3187 return -EBUSY;
3188
3189 mutex_lock(&local->chanctx_mtx);
3190 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3191 lockdep_is_held(&local->chanctx_mtx));
3192 if (!conf) {
3193 err = -EBUSY;
3194 goto out;
3195 }
3196
3197 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3198 if (!chanctx) {
3199 err = -EBUSY;
3200 goto out;
3201 }
3202
3203 ch_switch.timestamp = 0;
3204 ch_switch.device_timestamp = 0;
3205 ch_switch.block_tx = params->block_tx;
3206 ch_switch.chandef = params->chandef;
3207 ch_switch.count = params->count;
3208
3209 err = drv_pre_channel_switch(sdata, &ch_switch);
3210 if (err)
3211 goto out;
3212
3213 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3214 chanctx->mode,
3215 params->radar_required);
3216 if (err)
3217 goto out;
3218
3219 /* if reservation is invalid then this will fail */
3220 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3221 if (err) {
3222 ieee80211_vif_unreserve_chanctx(sdata);
3223 goto out;
3224 }
3225
3226 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3227 if (err) {
3228 ieee80211_vif_unreserve_chanctx(sdata);
3229 goto out;
3230 }
3231
3232 sdata->csa_chandef = params->chandef;
3233 sdata->csa_block_tx = params->block_tx;
3234 sdata->vif.csa_active = true;
3235
3236 if (sdata->csa_block_tx)
3237 ieee80211_stop_vif_queues(local, sdata,
3238 IEEE80211_QUEUE_STOP_REASON_CSA);
3239
3240 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3241 params->count);
3242
3243 if (changed) {
3244 ieee80211_bss_info_change_notify(sdata, changed);
3245 drv_channel_switch_beacon(sdata, &params->chandef);
3246 } else {
3247 /* if the beacon didn't change, we can finalize immediately */
3248 ieee80211_csa_finalize(sdata);
3249 }
3250
3251 out:
3252 mutex_unlock(&local->chanctx_mtx);
3253 return err;
3254 }
3255
3256 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3257 struct cfg80211_csa_settings *params)
3258 {
3259 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3260 struct ieee80211_local *local = sdata->local;
3261 int err;
3262
3263 mutex_lock(&local->mtx);
3264 err = __ieee80211_channel_switch(wiphy, dev, params);
3265 mutex_unlock(&local->mtx);
3266
3267 return err;
3268 }
3269
3270 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3271 struct sk_buff *skb, u64 *cookie,
3272 gfp_t gfp)
3273 {
3274 unsigned long spin_flags;
3275 struct sk_buff *ack_skb;
3276 int id;
3277
3278 ack_skb = skb_copy(skb, gfp);
3279 if (!ack_skb)
3280 return ERR_PTR(-ENOMEM);
3281
3282 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3283 id = idr_alloc(&local->ack_status_frames, ack_skb,
3284 1, 0x10000, GFP_ATOMIC);
3285 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3286
3287 if (id < 0) {
3288 kfree_skb(ack_skb);
3289 return ERR_PTR(-ENOMEM);
3290 }
3291
3292 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3293
3294 *cookie = ieee80211_mgmt_tx_cookie(local);
3295 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3296
3297 return ack_skb;
3298 }
3299
3300 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3301 struct cfg80211_mgmt_tx_params *params,
3302 u64 *cookie)
3303 {
3304 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3305 struct ieee80211_local *local = sdata->local;
3306 struct sk_buff *skb, *ack_skb;
3307 struct sta_info *sta;
3308 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3309 bool need_offchan = false;
3310 u32 flags;
3311 int ret;
3312 u8 *data;
3313
3314 if (params->dont_wait_for_ack)
3315 flags = IEEE80211_TX_CTL_NO_ACK;
3316 else
3317 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3318 IEEE80211_TX_CTL_REQ_TX_STATUS;
3319
3320 if (params->no_cck)
3321 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3322
3323 switch (sdata->vif.type) {
3324 case NL80211_IFTYPE_ADHOC:
3325 if (!sdata->vif.bss_conf.ibss_joined)
3326 need_offchan = true;
3327 /* fall through */
3328 #ifdef CONFIG_MAC80211_MESH
3329 case NL80211_IFTYPE_MESH_POINT:
3330 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3331 !sdata->u.mesh.mesh_id_len)
3332 need_offchan = true;
3333 /* fall through */
3334 #endif
3335 case NL80211_IFTYPE_AP:
3336 case NL80211_IFTYPE_AP_VLAN:
3337 case NL80211_IFTYPE_P2P_GO:
3338 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3339 !ieee80211_vif_is_mesh(&sdata->vif) &&
3340 !rcu_access_pointer(sdata->bss->beacon))
3341 need_offchan = true;
3342 if (!ieee80211_is_action(mgmt->frame_control) ||
3343 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3344 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3345 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3346 break;
3347 rcu_read_lock();
3348 sta = sta_info_get(sdata, mgmt->da);
3349 rcu_read_unlock();
3350 if (!sta)
3351 return -ENOLINK;
3352 break;
3353 case NL80211_IFTYPE_STATION:
3354 case NL80211_IFTYPE_P2P_CLIENT:
3355 sdata_lock(sdata);
3356 if (!sdata->u.mgd.associated ||
3357 (params->offchan && params->wait &&
3358 local->ops->remain_on_channel &&
3359 memcmp(sdata->u.mgd.associated->bssid,
3360 mgmt->bssid, ETH_ALEN)))
3361 need_offchan = true;
3362 sdata_unlock(sdata);
3363 break;
3364 case NL80211_IFTYPE_P2P_DEVICE:
3365 need_offchan = true;
3366 break;
3367 default:
3368 return -EOPNOTSUPP;
3369 }
3370
3371 /* configurations requiring offchan cannot work if no channel has been
3372 * specified
3373 */
3374 if (need_offchan && !params->chan)
3375 return -EINVAL;
3376
3377 mutex_lock(&local->mtx);
3378
3379 /* Check if the operating channel is the requested channel */
3380 if (!need_offchan) {
3381 struct ieee80211_chanctx_conf *chanctx_conf;
3382
3383 rcu_read_lock();
3384 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3385
3386 if (chanctx_conf) {
3387 need_offchan = params->chan &&
3388 (params->chan !=
3389 chanctx_conf->def.chan);
3390 } else if (!params->chan) {
3391 ret = -EINVAL;
3392 rcu_read_unlock();
3393 goto out_unlock;
3394 } else {
3395 need_offchan = true;
3396 }
3397 rcu_read_unlock();
3398 }
3399
3400 if (need_offchan && !params->offchan) {
3401 ret = -EBUSY;
3402 goto out_unlock;
3403 }
3404
3405 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3406 if (!skb) {
3407 ret = -ENOMEM;
3408 goto out_unlock;
3409 }
3410 skb_reserve(skb, local->hw.extra_tx_headroom);
3411
3412 data = skb_put(skb, params->len);
3413 memcpy(data, params->buf, params->len);
3414
3415 /* Update CSA counters */
3416 if (sdata->vif.csa_active &&
3417 (sdata->vif.type == NL80211_IFTYPE_AP ||
3418 sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3419 sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3420 params->n_csa_offsets) {
3421 int i;
3422 struct beacon_data *beacon = NULL;
3423
3424 rcu_read_lock();
3425
3426 if (sdata->vif.type == NL80211_IFTYPE_AP)
3427 beacon = rcu_dereference(sdata->u.ap.beacon);
3428 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3429 beacon = rcu_dereference(sdata->u.ibss.presp);
3430 else if (ieee80211_vif_is_mesh(&sdata->vif))
3431 beacon = rcu_dereference(sdata->u.mesh.beacon);
3432
3433 if (beacon)
3434 for (i = 0; i < params->n_csa_offsets; i++)
3435 data[params->csa_offsets[i]] =
3436 beacon->csa_current_counter;
3437
3438 rcu_read_unlock();
3439 }
3440
3441 IEEE80211_SKB_CB(skb)->flags = flags;
3442
3443 skb->dev = sdata->dev;
3444
3445 if (!params->dont_wait_for_ack) {
3446 /* make a copy to preserve the frame contents
3447 * in case of encryption.
3448 */
3449 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3450 GFP_KERNEL);
3451 if (IS_ERR(ack_skb)) {
3452 ret = PTR_ERR(ack_skb);
3453 kfree_skb(skb);
3454 goto out_unlock;
3455 }
3456 } else {
3457 /* for cookie below */
3458 ack_skb = skb;
3459 }
3460
3461 if (!need_offchan) {
3462 ieee80211_tx_skb(sdata, skb);
3463 ret = 0;
3464 goto out_unlock;
3465 }
3466
3467 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3468 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3469 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3470 IEEE80211_SKB_CB(skb)->hw_queue =
3471 local->hw.offchannel_tx_hw_queue;
3472
3473 /* This will handle all kinds of coalescing and immediate TX */
3474 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3475 params->wait, cookie, skb,
3476 IEEE80211_ROC_TYPE_MGMT_TX);
3477 if (ret)
3478 kfree_skb(skb);
3479 out_unlock:
3480 mutex_unlock(&local->mtx);
3481 return ret;
3482 }
3483
3484 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3485 struct wireless_dev *wdev,
3486 u64 cookie)
3487 {
3488 struct ieee80211_local *local = wiphy_priv(wiphy);
3489
3490 return ieee80211_cancel_roc(local, cookie, true);
3491 }
3492
3493 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3494 struct wireless_dev *wdev,
3495 u16 frame_type, bool reg)
3496 {
3497 struct ieee80211_local *local = wiphy_priv(wiphy);
3498 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3499
3500 switch (frame_type) {
3501 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3502 if (reg) {
3503 local->probe_req_reg++;
3504 sdata->vif.probe_req_reg++;
3505 } else {
3506 if (local->probe_req_reg)
3507 local->probe_req_reg--;
3508
3509 if (sdata->vif.probe_req_reg)
3510 sdata->vif.probe_req_reg--;
3511 }
3512
3513 if (!local->open_count)
3514 break;
3515
3516 if (sdata->vif.probe_req_reg == 1)
3517 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3518 FIF_PROBE_REQ);
3519 else if (sdata->vif.probe_req_reg == 0)
3520 drv_config_iface_filter(local, sdata, 0,
3521 FIF_PROBE_REQ);
3522
3523 ieee80211_configure_filter(local);
3524 break;
3525 default:
3526 break;
3527 }
3528 }
3529
3530 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3531 {
3532 struct ieee80211_local *local = wiphy_priv(wiphy);
3533
3534 if (local->started)
3535 return -EOPNOTSUPP;
3536
3537 return drv_set_antenna(local, tx_ant, rx_ant);
3538 }
3539
3540 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3541 {
3542 struct ieee80211_local *local = wiphy_priv(wiphy);
3543
3544 return drv_get_antenna(local, tx_ant, rx_ant);
3545 }
3546
3547 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3548 struct net_device *dev,
3549 struct cfg80211_gtk_rekey_data *data)
3550 {
3551 struct ieee80211_local *local = wiphy_priv(wiphy);
3552 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3553
3554 if (!local->ops->set_rekey_data)
3555 return -EOPNOTSUPP;
3556
3557 drv_set_rekey_data(local, sdata, data);
3558
3559 return 0;
3560 }
3561
3562 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3563 const u8 *peer, u64 *cookie)
3564 {
3565 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3566 struct ieee80211_local *local = sdata->local;
3567 struct ieee80211_qos_hdr *nullfunc;
3568 struct sk_buff *skb, *ack_skb;
3569 int size = sizeof(*nullfunc);
3570 __le16 fc;
3571 bool qos;
3572 struct ieee80211_tx_info *info;
3573 struct sta_info *sta;
3574 struct ieee80211_chanctx_conf *chanctx_conf;
3575 enum ieee80211_band band;
3576 int ret;
3577
3578 /* the lock is needed to assign the cookie later */
3579 mutex_lock(&local->mtx);
3580
3581 rcu_read_lock();
3582 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3583 if (WARN_ON(!chanctx_conf)) {
3584 ret = -EINVAL;
3585 goto unlock;
3586 }
3587 band = chanctx_conf->def.chan->band;
3588 sta = sta_info_get_bss(sdata, peer);
3589 if (sta) {
3590 qos = sta->sta.wme;
3591 } else {
3592 ret = -ENOLINK;
3593 goto unlock;
3594 }
3595
3596 if (qos) {
3597 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3598 IEEE80211_STYPE_QOS_NULLFUNC |
3599 IEEE80211_FCTL_FROMDS);
3600 } else {
3601 size -= 2;
3602 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3603 IEEE80211_STYPE_NULLFUNC |
3604 IEEE80211_FCTL_FROMDS);
3605 }
3606
3607 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3608 if (!skb) {
3609 ret = -ENOMEM;
3610 goto unlock;
3611 }
3612
3613 skb->dev = dev;
3614
3615 skb_reserve(skb, local->hw.extra_tx_headroom);
3616
3617 nullfunc = (void *) skb_put(skb, size);
3618 nullfunc->frame_control = fc;
3619 nullfunc->duration_id = 0;
3620 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3621 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3622 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3623 nullfunc->seq_ctrl = 0;
3624
3625 info = IEEE80211_SKB_CB(skb);
3626
3627 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3628 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3629 info->band = band;
3630
3631 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3632 skb->priority = 7;
3633 if (qos)
3634 nullfunc->qos_ctrl = cpu_to_le16(7);
3635
3636 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3637 if (IS_ERR(ack_skb)) {
3638 kfree_skb(skb);
3639 ret = PTR_ERR(ack_skb);
3640 goto unlock;
3641 }
3642
3643 local_bh_disable();
3644 ieee80211_xmit(sdata, sta, skb);
3645 local_bh_enable();
3646
3647 ret = 0;
3648 unlock:
3649 rcu_read_unlock();
3650 mutex_unlock(&local->mtx);
3651
3652 return ret;
3653 }
3654
3655 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3656 struct wireless_dev *wdev,
3657 struct cfg80211_chan_def *chandef)
3658 {
3659 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3660 struct ieee80211_local *local = wiphy_priv(wiphy);
3661 struct ieee80211_chanctx_conf *chanctx_conf;
3662 int ret = -ENODATA;
3663
3664 rcu_read_lock();
3665 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3666 if (chanctx_conf) {
3667 *chandef = sdata->vif.bss_conf.chandef;
3668 ret = 0;
3669 } else if (local->open_count > 0 &&
3670 local->open_count == local->monitors &&
3671 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3672 if (local->use_chanctx)
3673 *chandef = local->monitor_chandef;
3674 else
3675 *chandef = local->_oper_chandef;
3676 ret = 0;
3677 }
3678 rcu_read_unlock();
3679
3680 return ret;
3681 }
3682
3683 #ifdef CONFIG_PM
3684 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3685 {
3686 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3687 }
3688 #endif
3689
3690 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3691 struct net_device *dev,
3692 struct cfg80211_qos_map *qos_map)
3693 {
3694 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3695 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3696
3697 if (qos_map) {
3698 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3699 if (!new_qos_map)
3700 return -ENOMEM;
3701 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3702 } else {
3703 /* A NULL qos_map was passed to disable QoS mapping */
3704 new_qos_map = NULL;
3705 }
3706
3707 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3708 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3709 if (old_qos_map)
3710 kfree_rcu(old_qos_map, rcu_head);
3711
3712 return 0;
3713 }
3714
3715 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3716 struct net_device *dev,
3717 struct cfg80211_chan_def *chandef)
3718 {
3719 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3720 int ret;
3721 u32 changed = 0;
3722
3723 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3724 if (ret == 0)
3725 ieee80211_bss_info_change_notify(sdata, changed);
3726
3727 return ret;
3728 }
3729
3730 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3731 u8 tsid, const u8 *peer, u8 up,
3732 u16 admitted_time)
3733 {
3734 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3735 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3736 int ac = ieee802_1d_to_ac[up];
3737
3738 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3739 return -EOPNOTSUPP;
3740
3741 if (!(sdata->wmm_acm & BIT(up)))
3742 return -EINVAL;
3743
3744 if (ifmgd->tx_tspec[ac].admitted_time)
3745 return -EBUSY;
3746
3747 if (admitted_time) {
3748 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3749 ifmgd->tx_tspec[ac].tsid = tsid;
3750 ifmgd->tx_tspec[ac].up = up;
3751 }
3752
3753 return 0;
3754 }
3755
3756 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3757 u8 tsid, const u8 *peer)
3758 {
3759 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3760 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3761 struct ieee80211_local *local = wiphy_priv(wiphy);
3762 int ac;
3763
3764 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3765 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3766
3767 /* skip unused entries */
3768 if (!tx_tspec->admitted_time)
3769 continue;
3770
3771 if (tx_tspec->tsid != tsid)
3772 continue;
3773
3774 /* due to this new packets will be reassigned to non-ACM ACs */
3775 tx_tspec->up = -1;
3776
3777 /* Make sure that all packets have been sent to avoid to
3778 * restore the QoS params on packets that are still on the
3779 * queues.
3780 */
3781 synchronize_net();
3782 ieee80211_flush_queues(local, sdata, false);
3783
3784 /* restore the normal QoS parameters
3785 * (unconditionally to avoid races)
3786 */
3787 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3788 tx_tspec->downgraded = false;
3789 ieee80211_sta_handle_tspec_ac_params(sdata);
3790
3791 /* finally clear all the data */
3792 memset(tx_tspec, 0, sizeof(*tx_tspec));
3793
3794 return 0;
3795 }
3796
3797 return -ENOENT;
3798 }
3799
3800 const struct cfg80211_ops mac80211_config_ops = {
3801 .add_virtual_intf = ieee80211_add_iface,
3802 .del_virtual_intf = ieee80211_del_iface,
3803 .change_virtual_intf = ieee80211_change_iface,
3804 .start_p2p_device = ieee80211_start_p2p_device,
3805 .stop_p2p_device = ieee80211_stop_p2p_device,
3806 .add_key = ieee80211_add_key,
3807 .del_key = ieee80211_del_key,
3808 .get_key = ieee80211_get_key,
3809 .set_default_key = ieee80211_config_default_key,
3810 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3811 .start_ap = ieee80211_start_ap,
3812 .change_beacon = ieee80211_change_beacon,
3813 .stop_ap = ieee80211_stop_ap,
3814 .add_station = ieee80211_add_station,
3815 .del_station = ieee80211_del_station,
3816 .change_station = ieee80211_change_station,
3817 .get_station = ieee80211_get_station,
3818 .dump_station = ieee80211_dump_station,
3819 .dump_survey = ieee80211_dump_survey,
3820 #ifdef CONFIG_MAC80211_MESH
3821 .add_mpath = ieee80211_add_mpath,
3822 .del_mpath = ieee80211_del_mpath,
3823 .change_mpath = ieee80211_change_mpath,
3824 .get_mpath = ieee80211_get_mpath,
3825 .dump_mpath = ieee80211_dump_mpath,
3826 .get_mpp = ieee80211_get_mpp,
3827 .dump_mpp = ieee80211_dump_mpp,
3828 .update_mesh_config = ieee80211_update_mesh_config,
3829 .get_mesh_config = ieee80211_get_mesh_config,
3830 .join_mesh = ieee80211_join_mesh,
3831 .leave_mesh = ieee80211_leave_mesh,
3832 #endif
3833 .join_ocb = ieee80211_join_ocb,
3834 .leave_ocb = ieee80211_leave_ocb,
3835 .change_bss = ieee80211_change_bss,
3836 .set_txq_params = ieee80211_set_txq_params,
3837 .set_monitor_channel = ieee80211_set_monitor_channel,
3838 .suspend = ieee80211_suspend,
3839 .resume = ieee80211_resume,
3840 .scan = ieee80211_scan,
3841 .sched_scan_start = ieee80211_sched_scan_start,
3842 .sched_scan_stop = ieee80211_sched_scan_stop,
3843 .auth = ieee80211_auth,
3844 .assoc = ieee80211_assoc,
3845 .deauth = ieee80211_deauth,
3846 .disassoc = ieee80211_disassoc,
3847 .join_ibss = ieee80211_join_ibss,
3848 .leave_ibss = ieee80211_leave_ibss,
3849 .set_mcast_rate = ieee80211_set_mcast_rate,
3850 .set_wiphy_params = ieee80211_set_wiphy_params,
3851 .set_tx_power = ieee80211_set_tx_power,
3852 .get_tx_power = ieee80211_get_tx_power,
3853 .set_wds_peer = ieee80211_set_wds_peer,
3854 .rfkill_poll = ieee80211_rfkill_poll,
3855 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3856 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3857 .set_power_mgmt = ieee80211_set_power_mgmt,
3858 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3859 .remain_on_channel = ieee80211_remain_on_channel,
3860 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3861 .mgmt_tx = ieee80211_mgmt_tx,
3862 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3863 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3864 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3865 .set_antenna = ieee80211_set_antenna,
3866 .get_antenna = ieee80211_get_antenna,
3867 .set_rekey_data = ieee80211_set_rekey_data,
3868 .tdls_oper = ieee80211_tdls_oper,
3869 .tdls_mgmt = ieee80211_tdls_mgmt,
3870 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3871 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3872 .probe_client = ieee80211_probe_client,
3873 .set_noack_map = ieee80211_set_noack_map,
3874 #ifdef CONFIG_PM
3875 .set_wakeup = ieee80211_set_wakeup,
3876 #endif
3877 .get_channel = ieee80211_cfg_get_channel,
3878 .start_radar_detection = ieee80211_start_radar_detection,
3879 .channel_switch = ieee80211_channel_switch,
3880 .set_qos_map = ieee80211_set_qos_map,
3881 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3882 .add_tx_ts = ieee80211_add_tx_ts,
3883 .del_tx_ts = ieee80211_del_tx_ts,
3884 };
Michael's Linux tree.