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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / net / mac80211 / cfg.c
blobfe1704c4e8fb825a455afeb53f34fd50b62dd33e
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 pn64 = atomic64_read(&key->conf.tx_pn);
343 iv32 = TKIP_PN_TO_IV32(pn64);
344 iv16 = TKIP_PN_TO_IV16(pn64);
345
346 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
347 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
348 drv_get_key_seq(sdata->local, key, &kseq);
349 iv32 = kseq.tkip.iv32;
350 iv16 = kseq.tkip.iv16;
351 }
352
353 seq[0] = iv16 & 0xff;
354 seq[1] = (iv16 >> 8) & 0xff;
355 seq[2] = iv32 & 0xff;
356 seq[3] = (iv32 >> 8) & 0xff;
357 seq[4] = (iv32 >> 16) & 0xff;
358 seq[5] = (iv32 >> 24) & 0xff;
359 params.seq = seq;
360 params.seq_len = 6;
361 break;
362 case WLAN_CIPHER_SUITE_CCMP:
363 case WLAN_CIPHER_SUITE_CCMP_256:
364 case WLAN_CIPHER_SUITE_AES_CMAC:
365 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
366 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
367 offsetof(typeof(kseq), aes_cmac));
368 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
369 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
370 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
371 offsetof(typeof(kseq), aes_gmac));
372 case WLAN_CIPHER_SUITE_GCMP:
373 case WLAN_CIPHER_SUITE_GCMP_256:
374 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
375 offsetof(typeof(kseq), gcmp));
376
377 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
378 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
379 drv_get_key_seq(sdata->local, key, &kseq);
380 memcpy(seq, kseq.ccmp.pn, 6);
381 } else {
382 pn64 = atomic64_read(&key->conf.tx_pn);
383 seq[0] = pn64;
384 seq[1] = pn64 >> 8;
385 seq[2] = pn64 >> 16;
386 seq[3] = pn64 >> 24;
387 seq[4] = pn64 >> 32;
388 seq[5] = pn64 >> 40;
389 }
390 params.seq = seq;
391 params.seq_len = 6;
392 break;
393 default:
394 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
395 break;
396 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
397 break;
398 drv_get_key_seq(sdata->local, key, &kseq);
399 params.seq = kseq.hw.seq;
400 params.seq_len = kseq.hw.seq_len;
401 break;
402 }
403
404 params.key = key->conf.key;
405 params.key_len = key->conf.keylen;
406
407 callback(cookie, &params);
408 err = 0;
409
410 out:
411 rcu_read_unlock();
412 return err;
413 }
414
415 static int ieee80211_config_default_key(struct wiphy *wiphy,
416 struct net_device *dev,
417 u8 key_idx, bool uni,
418 bool multi)
419 {
420 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
421
422 ieee80211_set_default_key(sdata, key_idx, uni, multi);
423
424 return 0;
425 }
426
427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
428 struct net_device *dev,
429 u8 key_idx)
430 {
431 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
432
433 ieee80211_set_default_mgmt_key(sdata, key_idx);
434
435 return 0;
436 }
437
438 void sta_set_rate_info_tx(struct sta_info *sta,
439 const struct ieee80211_tx_rate *rate,
440 struct rate_info *rinfo)
441 {
442 rinfo->flags = 0;
443 if (rate->flags & IEEE80211_TX_RC_MCS) {
444 rinfo->flags |= RATE_INFO_FLAGS_MCS;
445 rinfo->mcs = rate->idx;
446 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
447 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
448 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
449 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
450 } else {
451 struct ieee80211_supported_band *sband;
452 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
453 u16 brate;
454
455 sband = sta->local->hw.wiphy->bands[
456 ieee80211_get_sdata_band(sta->sdata)];
457 brate = sband->bitrates[rate->idx].bitrate;
458 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
459 }
460 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
461 rinfo->bw = RATE_INFO_BW_40;
462 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
463 rinfo->bw = RATE_INFO_BW_80;
464 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
465 rinfo->bw = RATE_INFO_BW_160;
466 else
467 rinfo->bw = RATE_INFO_BW_20;
468 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
469 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
470 }
471
472 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
473 int idx, u8 *mac, struct station_info *sinfo)
474 {
475 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
476 struct ieee80211_local *local = sdata->local;
477 struct sta_info *sta;
478 int ret = -ENOENT;
479
480 mutex_lock(&local->sta_mtx);
481
482 sta = sta_info_get_by_idx(sdata, idx);
483 if (sta) {
484 ret = 0;
485 memcpy(mac, sta->sta.addr, ETH_ALEN);
486 sta_set_sinfo(sta, sinfo);
487 }
488
489 mutex_unlock(&local->sta_mtx);
490
491 return ret;
492 }
493
494 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
495 int idx, struct survey_info *survey)
496 {
497 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
498
499 return drv_get_survey(local, idx, survey);
500 }
501
502 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
503 const u8 *mac, struct station_info *sinfo)
504 {
505 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
506 struct ieee80211_local *local = sdata->local;
507 struct sta_info *sta;
508 int ret = -ENOENT;
509
510 mutex_lock(&local->sta_mtx);
511
512 sta = sta_info_get_bss(sdata, mac);
513 if (sta) {
514 ret = 0;
515 sta_set_sinfo(sta, sinfo);
516 }
517
518 mutex_unlock(&local->sta_mtx);
519
520 return ret;
521 }
522
523 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
524 struct cfg80211_chan_def *chandef)
525 {
526 struct ieee80211_local *local = wiphy_priv(wiphy);
527 struct ieee80211_sub_if_data *sdata;
528 int ret = 0;
529
530 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
531 return 0;
532
533 mutex_lock(&local->mtx);
534 mutex_lock(&local->iflist_mtx);
535 if (local->use_chanctx) {
536 sdata = rcu_dereference_protected(
537 local->monitor_sdata,
538 lockdep_is_held(&local->iflist_mtx));
539 if (sdata) {
540 ieee80211_vif_release_channel(sdata);
541 ret = ieee80211_vif_use_channel(sdata, chandef,
542 IEEE80211_CHANCTX_EXCLUSIVE);
543 }
544 } else if (local->open_count == local->monitors) {
545 local->_oper_chandef = *chandef;
546 ieee80211_hw_config(local, 0);
547 }
548
549 if (ret == 0)
550 local->monitor_chandef = *chandef;
551 mutex_unlock(&local->iflist_mtx);
552 mutex_unlock(&local->mtx);
553
554 return ret;
555 }
556
557 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
558 const u8 *resp, size_t resp_len,
559 const struct ieee80211_csa_settings *csa)
560 {
561 struct probe_resp *new, *old;
562
563 if (!resp || !resp_len)
564 return 1;
565
566 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
567
568 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
569 if (!new)
570 return -ENOMEM;
571
572 new->len = resp_len;
573 memcpy(new->data, resp, resp_len);
574
575 if (csa)
576 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
577 csa->n_counter_offsets_presp *
578 sizeof(new->csa_counter_offsets[0]));
579
580 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
581 if (old)
582 kfree_rcu(old, rcu_head);
583
584 return 0;
585 }
586
587 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
588 struct cfg80211_beacon_data *params,
589 const struct ieee80211_csa_settings *csa)
590 {
591 struct beacon_data *new, *old;
592 int new_head_len, new_tail_len;
593 int size, err;
594 u32 changed = BSS_CHANGED_BEACON;
595
596 old = sdata_dereference(sdata->u.ap.beacon, sdata);
597
598
599 /* Need to have a beacon head if we don't have one yet */
600 if (!params->head && !old)
601 return -EINVAL;
602
603 /* new or old head? */
604 if (params->head)
605 new_head_len = params->head_len;
606 else
607 new_head_len = old->head_len;
608
609 /* new or old tail? */
610 if (params->tail || !old)
611 /* params->tail_len will be zero for !params->tail */
612 new_tail_len = params->tail_len;
613 else
614 new_tail_len = old->tail_len;
615
616 size = sizeof(*new) + new_head_len + new_tail_len;
617
618 new = kzalloc(size, GFP_KERNEL);
619 if (!new)
620 return -ENOMEM;
621
622 /* start filling the new info now */
623
624 /*
625 * pointers go into the block we allocated,
626 * memory is | beacon_data | head | tail |
627 */
628 new->head = ((u8 *) new) + sizeof(*new);
629 new->tail = new->head + new_head_len;
630 new->head_len = new_head_len;
631 new->tail_len = new_tail_len;
632
633 if (csa) {
634 new->csa_current_counter = csa->count;
635 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
636 csa->n_counter_offsets_beacon *
637 sizeof(new->csa_counter_offsets[0]));
638 }
639
640 /* copy in head */
641 if (params->head)
642 memcpy(new->head, params->head, new_head_len);
643 else
644 memcpy(new->head, old->head, new_head_len);
645
646 /* copy in optional tail */
647 if (params->tail)
648 memcpy(new->tail, params->tail, new_tail_len);
649 else
650 if (old)
651 memcpy(new->tail, old->tail, new_tail_len);
652
653 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
654 params->probe_resp_len, csa);
655 if (err < 0)
656 return err;
657 if (err == 0)
658 changed |= BSS_CHANGED_AP_PROBE_RESP;
659
660 rcu_assign_pointer(sdata->u.ap.beacon, new);
661
662 if (old)
663 kfree_rcu(old, rcu_head);
664
665 return changed;
666 }
667
668 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
669 struct cfg80211_ap_settings *params)
670 {
671 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
672 struct ieee80211_local *local = sdata->local;
673 struct beacon_data *old;
674 struct ieee80211_sub_if_data *vlan;
675 u32 changed = BSS_CHANGED_BEACON_INT |
676 BSS_CHANGED_BEACON_ENABLED |
677 BSS_CHANGED_BEACON |
678 BSS_CHANGED_SSID |
679 BSS_CHANGED_P2P_PS |
680 BSS_CHANGED_TXPOWER;
681 int err;
682
683 old = sdata_dereference(sdata->u.ap.beacon, sdata);
684 if (old)
685 return -EALREADY;
686
687 switch (params->smps_mode) {
688 case NL80211_SMPS_OFF:
689 sdata->smps_mode = IEEE80211_SMPS_OFF;
690 break;
691 case NL80211_SMPS_STATIC:
692 sdata->smps_mode = IEEE80211_SMPS_STATIC;
693 break;
694 case NL80211_SMPS_DYNAMIC:
695 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
696 break;
697 default:
698 return -EINVAL;
699 }
700 sdata->needed_rx_chains = sdata->local->rx_chains;
701
702 mutex_lock(&local->mtx);
703 err = ieee80211_vif_use_channel(sdata, &params->chandef,
704 IEEE80211_CHANCTX_SHARED);
705 if (!err)
706 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
707 mutex_unlock(&local->mtx);
708 if (err)
709 return err;
710
711 /*
712 * Apply control port protocol, this allows us to
713 * not encrypt dynamic WEP control frames.
714 */
715 sdata->control_port_protocol = params->crypto.control_port_ethertype;
716 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
717 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
718 &params->crypto,
719 sdata->vif.type);
720
721 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
722 vlan->control_port_protocol =
723 params->crypto.control_port_ethertype;
724 vlan->control_port_no_encrypt =
725 params->crypto.control_port_no_encrypt;
726 vlan->encrypt_headroom =
727 ieee80211_cs_headroom(sdata->local,
728 &params->crypto,
729 vlan->vif.type);
730 }
731
732 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
733 sdata->vif.bss_conf.dtim_period = params->dtim_period;
734 sdata->vif.bss_conf.enable_beacon = true;
735
736 sdata->vif.bss_conf.ssid_len = params->ssid_len;
737 if (params->ssid_len)
738 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
739 params->ssid_len);
740 sdata->vif.bss_conf.hidden_ssid =
741 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
742
743 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
744 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
745 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
746 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
747 if (params->p2p_opp_ps)
748 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
749 IEEE80211_P2P_OPPPS_ENABLE_BIT;
750
751 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
752 if (err < 0) {
753 ieee80211_vif_release_channel(sdata);
754 return err;
755 }
756 changed |= err;
757
758 err = drv_start_ap(sdata->local, sdata);
759 if (err) {
760 old = sdata_dereference(sdata->u.ap.beacon, sdata);
761
762 if (old)
763 kfree_rcu(old, rcu_head);
764 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
765 ieee80211_vif_release_channel(sdata);
766 return err;
767 }
768
769 ieee80211_recalc_dtim(local, sdata);
770 ieee80211_bss_info_change_notify(sdata, changed);
771
772 netif_carrier_on(dev);
773 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
774 netif_carrier_on(vlan->dev);
775
776 return 0;
777 }
778
779 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
780 struct cfg80211_beacon_data *params)
781 {
782 struct ieee80211_sub_if_data *sdata;
783 struct beacon_data *old;
784 int err;
785
786 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
787 sdata_assert_lock(sdata);
788
789 /* don't allow changing the beacon while CSA is in place - offset
790 * of channel switch counter may change
791 */
792 if (sdata->vif.csa_active)
793 return -EBUSY;
794
795 old = sdata_dereference(sdata->u.ap.beacon, sdata);
796 if (!old)
797 return -ENOENT;
798
799 err = ieee80211_assign_beacon(sdata, params, NULL);
800 if (err < 0)
801 return err;
802 ieee80211_bss_info_change_notify(sdata, err);
803 return 0;
804 }
805
806 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
807 {
808 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
809 struct ieee80211_sub_if_data *vlan;
810 struct ieee80211_local *local = sdata->local;
811 struct beacon_data *old_beacon;
812 struct probe_resp *old_probe_resp;
813 struct cfg80211_chan_def chandef;
814
815 sdata_assert_lock(sdata);
816
817 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
818 if (!old_beacon)
819 return -ENOENT;
820 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
821
822 /* abort any running channel switch */
823 mutex_lock(&local->mtx);
824 sdata->vif.csa_active = false;
825 if (sdata->csa_block_tx) {
826 ieee80211_wake_vif_queues(local, sdata,
827 IEEE80211_QUEUE_STOP_REASON_CSA);
828 sdata->csa_block_tx = false;
829 }
830
831 mutex_unlock(&local->mtx);
832
833 kfree(sdata->u.ap.next_beacon);
834 sdata->u.ap.next_beacon = NULL;
835
836 /* turn off carrier for this interface and dependent VLANs */
837 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
838 netif_carrier_off(vlan->dev);
839 netif_carrier_off(dev);
840
841 /* remove beacon and probe response */
842 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
843 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
844 kfree_rcu(old_beacon, rcu_head);
845 if (old_probe_resp)
846 kfree_rcu(old_probe_resp, rcu_head);
847 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
848
849 __sta_info_flush(sdata, true);
850 ieee80211_free_keys(sdata, true);
851
852 sdata->vif.bss_conf.enable_beacon = false;
853 sdata->vif.bss_conf.ssid_len = 0;
854 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
855 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
856
857 if (sdata->wdev.cac_started) {
858 chandef = sdata->vif.bss_conf.chandef;
859 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
860 cfg80211_cac_event(sdata->dev, &chandef,
861 NL80211_RADAR_CAC_ABORTED,
862 GFP_KERNEL);
863 }
864
865 drv_stop_ap(sdata->local, sdata);
866
867 /* free all potentially still buffered bcast frames */
868 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
869 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
870
871 mutex_lock(&local->mtx);
872 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
873 ieee80211_vif_release_channel(sdata);
874 mutex_unlock(&local->mtx);
875
876 return 0;
877 }
878
879 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
880 struct iapp_layer2_update {
881 u8 da[ETH_ALEN]; /* broadcast */
882 u8 sa[ETH_ALEN]; /* STA addr */
883 __be16 len; /* 6 */
884 u8 dsap; /* 0 */
885 u8 ssap; /* 0 */
886 u8 control;
887 u8 xid_info[3];
888 } __packed;
889
890 static void ieee80211_send_layer2_update(struct sta_info *sta)
891 {
892 struct iapp_layer2_update *msg;
893 struct sk_buff *skb;
894
895 /* Send Level 2 Update Frame to update forwarding tables in layer 2
896 * bridge devices */
897
898 skb = dev_alloc_skb(sizeof(*msg));
899 if (!skb)
900 return;
901 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
902
903 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
904 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
905
906 eth_broadcast_addr(msg->da);
907 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
908 msg->len = htons(6);
909 msg->dsap = 0;
910 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
911 msg->control = 0xaf; /* XID response lsb.1111F101.
912 * F=0 (no poll command; unsolicited frame) */
913 msg->xid_info[0] = 0x81; /* XID format identifier */
914 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
915 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
916
917 skb->dev = sta->sdata->dev;
918 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
919 memset(skb->cb, 0, sizeof(skb->cb));
920 netif_rx_ni(skb);
921 }
922
923 static int sta_apply_auth_flags(struct ieee80211_local *local,
924 struct sta_info *sta,
925 u32 mask, u32 set)
926 {
927 int ret;
928
929 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
930 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
931 !test_sta_flag(sta, WLAN_STA_AUTH)) {
932 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
933 if (ret)
934 return ret;
935 }
936
937 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
938 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
939 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
940 /*
941 * When peer becomes associated, init rate control as
942 * well. Some drivers require rate control initialized
943 * before drv_sta_state() is called.
944 */
945 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
946 rate_control_rate_init(sta);
947
948 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
949 if (ret)
950 return ret;
951 }
952
953 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
954 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
955 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
956 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
957 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
958 else
959 ret = 0;
960 if (ret)
961 return ret;
962 }
963
964 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
965 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
966 test_sta_flag(sta, WLAN_STA_ASSOC)) {
967 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
968 if (ret)
969 return ret;
970 }
971
972 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
973 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
974 test_sta_flag(sta, WLAN_STA_AUTH)) {
975 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
976 if (ret)
977 return ret;
978 }
979
980 return 0;
981 }
982
983 static void sta_apply_mesh_params(struct ieee80211_local *local,
984 struct sta_info *sta,
985 struct station_parameters *params)
986 {
987 #ifdef CONFIG_MAC80211_MESH
988 struct ieee80211_sub_if_data *sdata = sta->sdata;
989 u32 changed = 0;
990
991 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
992 switch (params->plink_state) {
993 case NL80211_PLINK_ESTAB:
994 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
995 changed = mesh_plink_inc_estab_count(sdata);
996 sta->mesh->plink_state = params->plink_state;
997
998 ieee80211_mps_sta_status_update(sta);
999 changed |= ieee80211_mps_set_sta_local_pm(sta,
1000 sdata->u.mesh.mshcfg.power_mode);
1001 break;
1002 case NL80211_PLINK_LISTEN:
1003 case NL80211_PLINK_BLOCKED:
1004 case NL80211_PLINK_OPN_SNT:
1005 case NL80211_PLINK_OPN_RCVD:
1006 case NL80211_PLINK_CNF_RCVD:
1007 case NL80211_PLINK_HOLDING:
1008 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1009 changed = mesh_plink_dec_estab_count(sdata);
1010 sta->mesh->plink_state = params->plink_state;
1011
1012 ieee80211_mps_sta_status_update(sta);
1013 changed |= ieee80211_mps_set_sta_local_pm(sta,
1014 NL80211_MESH_POWER_UNKNOWN);
1015 break;
1016 default:
1017 /* nothing */
1018 break;
1019 }
1020 }
1021
1022 switch (params->plink_action) {
1023 case NL80211_PLINK_ACTION_NO_ACTION:
1024 /* nothing */
1025 break;
1026 case NL80211_PLINK_ACTION_OPEN:
1027 changed |= mesh_plink_open(sta);
1028 break;
1029 case NL80211_PLINK_ACTION_BLOCK:
1030 changed |= mesh_plink_block(sta);
1031 break;
1032 }
1033
1034 if (params->local_pm)
1035 changed |= ieee80211_mps_set_sta_local_pm(sta,
1036 params->local_pm);
1037
1038 ieee80211_mbss_info_change_notify(sdata, changed);
1039 #endif
1040 }
1041
1042 static int sta_apply_parameters(struct ieee80211_local *local,
1043 struct sta_info *sta,
1044 struct station_parameters *params)
1045 {
1046 int ret = 0;
1047 struct ieee80211_supported_band *sband;
1048 struct ieee80211_sub_if_data *sdata = sta->sdata;
1049 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1050 u32 mask, set;
1051
1052 sband = local->hw.wiphy->bands[band];
1053
1054 mask = params->sta_flags_mask;
1055 set = params->sta_flags_set;
1056
1057 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1058 /*
1059 * In mesh mode, ASSOCIATED isn't part of the nl80211
1060 * API but must follow AUTHENTICATED for driver state.
1061 */
1062 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1063 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1064 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1065 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1066 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1067 /*
1068 * TDLS -- everything follows authorized, but
1069 * only becoming authorized is possible, not
1070 * going back
1071 */
1072 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1073 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1074 BIT(NL80211_STA_FLAG_ASSOCIATED);
1075 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1076 BIT(NL80211_STA_FLAG_ASSOCIATED);
1077 }
1078 }
1079
1080 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1081 local->hw.queues >= IEEE80211_NUM_ACS)
1082 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1083
1084 /* auth flags will be set later for TDLS,
1085 * and for unassociated stations that move to assocaited */
1086 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1087 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1088 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1089 ret = sta_apply_auth_flags(local, sta, mask, set);
1090 if (ret)
1091 return ret;
1092 }
1093
1094 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1095 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1096 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1097 else
1098 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1099 }
1100
1101 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1102 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1103 if (set & BIT(NL80211_STA_FLAG_MFP))
1104 set_sta_flag(sta, WLAN_STA_MFP);
1105 else
1106 clear_sta_flag(sta, WLAN_STA_MFP);
1107 }
1108
1109 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1110 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1111 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1112 else
1113 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1114 }
1115
1116 /* mark TDLS channel switch support, if the AP allows it */
1117 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1118 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1119 params->ext_capab_len >= 4 &&
1120 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1121 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1122
1123 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1124 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1125 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1126 params->ext_capab_len >= 8 &&
1127 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1128 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1129
1130 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1131 sta->sta.uapsd_queues = params->uapsd_queues;
1132 sta->sta.max_sp = params->max_sp;
1133 }
1134
1135 /* The sender might not have sent the last bit, consider it to be 0 */
1136 if (params->ext_capab_len >= 8) {
1137 u8 val = (params->ext_capab[7] &
1138 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1139
1140 /* we did get all the bits, take the MSB as well */
1141 if (params->ext_capab_len >= 9) {
1142 u8 val_msb = params->ext_capab[8] &
1143 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1144 val_msb <<= 1;
1145 val |= val_msb;
1146 }
1147
1148 switch (val) {
1149 case 1:
1150 sta->sta.max_amsdu_subframes = 32;
1151 break;
1152 case 2:
1153 sta->sta.max_amsdu_subframes = 16;
1154 break;
1155 case 3:
1156 sta->sta.max_amsdu_subframes = 8;
1157 break;
1158 default:
1159 sta->sta.max_amsdu_subframes = 0;
1160 }
1161 }
1162
1163 /*
1164 * cfg80211 validates this (1-2007) and allows setting the AID
1165 * only when creating a new station entry
1166 */
1167 if (params->aid)
1168 sta->sta.aid = params->aid;
1169
1170 /*
1171 * Some of the following updates would be racy if called on an
1172 * existing station, via ieee80211_change_station(). However,
1173 * all such changes are rejected by cfg80211 except for updates
1174 * changing the supported rates on an existing but not yet used
1175 * TDLS peer.
1176 */
1177
1178 if (params->listen_interval >= 0)
1179 sta->listen_interval = params->listen_interval;
1180
1181 if (params->supported_rates) {
1182 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1183 sband, params->supported_rates,
1184 params->supported_rates_len,
1185 &sta->sta.supp_rates[band]);
1186 }
1187
1188 if (params->ht_capa)
1189 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1190 params->ht_capa, sta);
1191
1192 /* VHT can override some HT caps such as the A-MSDU max length */
1193 if (params->vht_capa)
1194 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1195 params->vht_capa, sta);
1196
1197 if (params->opmode_notif_used) {
1198 /* returned value is only needed for rc update, but the
1199 * rc isn't initialized here yet, so ignore it
1200 */
1201 __ieee80211_vht_handle_opmode(sdata, sta,
1202 params->opmode_notif, band);
1203 }
1204
1205 if (ieee80211_vif_is_mesh(&sdata->vif))
1206 sta_apply_mesh_params(local, sta, params);
1207
1208 /* set the STA state after all sta info from usermode has been set */
1209 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1210 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1211 ret = sta_apply_auth_flags(local, sta, mask, set);
1212 if (ret)
1213 return ret;
1214 }
1215
1216 return 0;
1217 }
1218
1219 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1220 const u8 *mac,
1221 struct station_parameters *params)
1222 {
1223 struct ieee80211_local *local = wiphy_priv(wiphy);
1224 struct sta_info *sta;
1225 struct ieee80211_sub_if_data *sdata;
1226 int err;
1227 int layer2_update;
1228
1229 if (params->vlan) {
1230 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1231
1232 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1233 sdata->vif.type != NL80211_IFTYPE_AP)
1234 return -EINVAL;
1235 } else
1236 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1237
1238 if (ether_addr_equal(mac, sdata->vif.addr))
1239 return -EINVAL;
1240
1241 if (is_multicast_ether_addr(mac))
1242 return -EINVAL;
1243
1244 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1245 if (!sta)
1246 return -ENOMEM;
1247
1248 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1249 sta->sta.tdls = true;
1250
1251 err = sta_apply_parameters(local, sta, params);
1252 if (err) {
1253 sta_info_free(local, sta);
1254 return err;
1255 }
1256
1257 /*
1258 * for TDLS and for unassociated station, rate control should be
1259 * initialized only when rates are known and station is marked
1260 * authorized/associated
1261 */
1262 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1263 test_sta_flag(sta, WLAN_STA_ASSOC))
1264 rate_control_rate_init(sta);
1265
1266 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1267 sdata->vif.type == NL80211_IFTYPE_AP;
1268
1269 err = sta_info_insert_rcu(sta);
1270 if (err) {
1271 rcu_read_unlock();
1272 return err;
1273 }
1274
1275 if (layer2_update)
1276 ieee80211_send_layer2_update(sta);
1277
1278 rcu_read_unlock();
1279
1280 return 0;
1281 }
1282
1283 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1284 struct station_del_parameters *params)
1285 {
1286 struct ieee80211_sub_if_data *sdata;
1287
1288 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1289
1290 if (params->mac)
1291 return sta_info_destroy_addr_bss(sdata, params->mac);
1292
1293 sta_info_flush(sdata);
1294 return 0;
1295 }
1296
1297 static int ieee80211_change_station(struct wiphy *wiphy,
1298 struct net_device *dev, const u8 *mac,
1299 struct station_parameters *params)
1300 {
1301 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1302 struct ieee80211_local *local = wiphy_priv(wiphy);
1303 struct sta_info *sta;
1304 struct ieee80211_sub_if_data *vlansdata;
1305 enum cfg80211_station_type statype;
1306 int err;
1307
1308 mutex_lock(&local->sta_mtx);
1309
1310 sta = sta_info_get_bss(sdata, mac);
1311 if (!sta) {
1312 err = -ENOENT;
1313 goto out_err;
1314 }
1315
1316 switch (sdata->vif.type) {
1317 case NL80211_IFTYPE_MESH_POINT:
1318 if (sdata->u.mesh.user_mpm)
1319 statype = CFG80211_STA_MESH_PEER_USER;
1320 else
1321 statype = CFG80211_STA_MESH_PEER_KERNEL;
1322 break;
1323 case NL80211_IFTYPE_ADHOC:
1324 statype = CFG80211_STA_IBSS;
1325 break;
1326 case NL80211_IFTYPE_STATION:
1327 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1328 statype = CFG80211_STA_AP_STA;
1329 break;
1330 }
1331 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1332 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1333 else
1334 statype = CFG80211_STA_TDLS_PEER_SETUP;
1335 break;
1336 case NL80211_IFTYPE_AP:
1337 case NL80211_IFTYPE_AP_VLAN:
1338 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1339 statype = CFG80211_STA_AP_CLIENT;
1340 else
1341 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1342 break;
1343 default:
1344 err = -EOPNOTSUPP;
1345 goto out_err;
1346 }
1347
1348 err = cfg80211_check_station_change(wiphy, params, statype);
1349 if (err)
1350 goto out_err;
1351
1352 if (params->vlan && params->vlan != sta->sdata->dev) {
1353 bool prev_4addr = false;
1354 bool new_4addr = false;
1355
1356 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1357
1358 if (params->vlan->ieee80211_ptr->use_4addr) {
1359 if (vlansdata->u.vlan.sta) {
1360 err = -EBUSY;
1361 goto out_err;
1362 }
1363
1364 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1365 new_4addr = true;
1366 }
1367
1368 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1369 sta->sdata->u.vlan.sta) {
1370 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1371 prev_4addr = true;
1372 }
1373
1374 sta->sdata = vlansdata;
1375 ieee80211_check_fast_xmit(sta);
1376
1377 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1378 prev_4addr != new_4addr) {
1379 if (new_4addr)
1380 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1381 else
1382 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1383 }
1384
1385 ieee80211_send_layer2_update(sta);
1386 }
1387
1388 err = sta_apply_parameters(local, sta, params);
1389 if (err)
1390 goto out_err;
1391
1392 mutex_unlock(&local->sta_mtx);
1393
1394 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1395 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1396 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1397 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1398 sta_info_tx_streams(sta) != 1) {
1399 ht_dbg(sta->sdata,
1400 "%pM just authorized and MIMO capable - update SMPS\n",
1401 sta->sta.addr);
1402 ieee80211_send_smps_action(sta->sdata,
1403 sta->sdata->bss->req_smps,
1404 sta->sta.addr,
1405 sta->sdata->vif.bss_conf.bssid);
1406 }
1407
1408 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1409 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1410 ieee80211_recalc_ps(local);
1411 ieee80211_recalc_ps_vif(sdata);
1412 }
1413
1414 return 0;
1415 out_err:
1416 mutex_unlock(&local->sta_mtx);
1417 return err;
1418 }
1419
1420 #ifdef CONFIG_MAC80211_MESH
1421 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1422 const u8 *dst, const u8 *next_hop)
1423 {
1424 struct ieee80211_sub_if_data *sdata;
1425 struct mesh_path *mpath;
1426 struct sta_info *sta;
1427
1428 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1429
1430 rcu_read_lock();
1431 sta = sta_info_get(sdata, next_hop);
1432 if (!sta) {
1433 rcu_read_unlock();
1434 return -ENOENT;
1435 }
1436
1437 mpath = mesh_path_add(sdata, dst);
1438 if (IS_ERR(mpath)) {
1439 rcu_read_unlock();
1440 return PTR_ERR(mpath);
1441 }
1442
1443 mesh_path_fix_nexthop(mpath, sta);
1444
1445 rcu_read_unlock();
1446 return 0;
1447 }
1448
1449 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1450 const u8 *dst)
1451 {
1452 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1453
1454 if (dst)
1455 return mesh_path_del(sdata, dst);
1456
1457 mesh_path_flush_by_iface(sdata);
1458 return 0;
1459 }
1460
1461 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1462 const u8 *dst, const u8 *next_hop)
1463 {
1464 struct ieee80211_sub_if_data *sdata;
1465 struct mesh_path *mpath;
1466 struct sta_info *sta;
1467
1468 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1469
1470 rcu_read_lock();
1471
1472 sta = sta_info_get(sdata, next_hop);
1473 if (!sta) {
1474 rcu_read_unlock();
1475 return -ENOENT;
1476 }
1477
1478 mpath = mesh_path_lookup(sdata, dst);
1479 if (!mpath) {
1480 rcu_read_unlock();
1481 return -ENOENT;
1482 }
1483
1484 mesh_path_fix_nexthop(mpath, sta);
1485
1486 rcu_read_unlock();
1487 return 0;
1488 }
1489
1490 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1491 struct mpath_info *pinfo)
1492 {
1493 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1494
1495 if (next_hop_sta)
1496 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1497 else
1498 eth_zero_addr(next_hop);
1499
1500 memset(pinfo, 0, sizeof(*pinfo));
1501
1502 pinfo->generation = mesh_paths_generation;
1503
1504 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1505 MPATH_INFO_SN |
1506 MPATH_INFO_METRIC |
1507 MPATH_INFO_EXPTIME |
1508 MPATH_INFO_DISCOVERY_TIMEOUT |
1509 MPATH_INFO_DISCOVERY_RETRIES |
1510 MPATH_INFO_FLAGS;
1511
1512 pinfo->frame_qlen = mpath->frame_queue.qlen;
1513 pinfo->sn = mpath->sn;
1514 pinfo->metric = mpath->metric;
1515 if (time_before(jiffies, mpath->exp_time))
1516 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1517 pinfo->discovery_timeout =
1518 jiffies_to_msecs(mpath->discovery_timeout);
1519 pinfo->discovery_retries = mpath->discovery_retries;
1520 if (mpath->flags & MESH_PATH_ACTIVE)
1521 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1522 if (mpath->flags & MESH_PATH_RESOLVING)
1523 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1524 if (mpath->flags & MESH_PATH_SN_VALID)
1525 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1526 if (mpath->flags & MESH_PATH_FIXED)
1527 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1528 if (mpath->flags & MESH_PATH_RESOLVED)
1529 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1530 }
1531
1532 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1533 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1534
1535 {
1536 struct ieee80211_sub_if_data *sdata;
1537 struct mesh_path *mpath;
1538
1539 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1540
1541 rcu_read_lock();
1542 mpath = mesh_path_lookup(sdata, dst);
1543 if (!mpath) {
1544 rcu_read_unlock();
1545 return -ENOENT;
1546 }
1547 memcpy(dst, mpath->dst, ETH_ALEN);
1548 mpath_set_pinfo(mpath, next_hop, pinfo);
1549 rcu_read_unlock();
1550 return 0;
1551 }
1552
1553 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1554 int idx, u8 *dst, u8 *next_hop,
1555 struct mpath_info *pinfo)
1556 {
1557 struct ieee80211_sub_if_data *sdata;
1558 struct mesh_path *mpath;
1559
1560 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1561
1562 rcu_read_lock();
1563 mpath = mesh_path_lookup_by_idx(sdata, idx);
1564 if (!mpath) {
1565 rcu_read_unlock();
1566 return -ENOENT;
1567 }
1568 memcpy(dst, mpath->dst, ETH_ALEN);
1569 mpath_set_pinfo(mpath, next_hop, pinfo);
1570 rcu_read_unlock();
1571 return 0;
1572 }
1573
1574 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1575 struct mpath_info *pinfo)
1576 {
1577 memset(pinfo, 0, sizeof(*pinfo));
1578 memcpy(mpp, mpath->mpp, ETH_ALEN);
1579
1580 pinfo->generation = mpp_paths_generation;
1581 }
1582
1583 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1584 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1585
1586 {
1587 struct ieee80211_sub_if_data *sdata;
1588 struct mesh_path *mpath;
1589
1590 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1591
1592 rcu_read_lock();
1593 mpath = mpp_path_lookup(sdata, dst);
1594 if (!mpath) {
1595 rcu_read_unlock();
1596 return -ENOENT;
1597 }
1598 memcpy(dst, mpath->dst, ETH_ALEN);
1599 mpp_set_pinfo(mpath, mpp, pinfo);
1600 rcu_read_unlock();
1601 return 0;
1602 }
1603
1604 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1605 int idx, u8 *dst, u8 *mpp,
1606 struct mpath_info *pinfo)
1607 {
1608 struct ieee80211_sub_if_data *sdata;
1609 struct mesh_path *mpath;
1610
1611 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1612
1613 rcu_read_lock();
1614 mpath = mpp_path_lookup_by_idx(sdata, idx);
1615 if (!mpath) {
1616 rcu_read_unlock();
1617 return -ENOENT;
1618 }
1619 memcpy(dst, mpath->dst, ETH_ALEN);
1620 mpp_set_pinfo(mpath, mpp, pinfo);
1621 rcu_read_unlock();
1622 return 0;
1623 }
1624
1625 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1626 struct net_device *dev,
1627 struct mesh_config *conf)
1628 {
1629 struct ieee80211_sub_if_data *sdata;
1630 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1631
1632 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1633 return 0;
1634 }
1635
1636 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1637 {
1638 return (mask >> (parm-1)) & 0x1;
1639 }
1640
1641 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1642 const struct mesh_setup *setup)
1643 {
1644 u8 *new_ie;
1645 const u8 *old_ie;
1646 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1647 struct ieee80211_sub_if_data, u.mesh);
1648
1649 /* allocate information elements */
1650 new_ie = NULL;
1651 old_ie = ifmsh->ie;
1652
1653 if (setup->ie_len) {
1654 new_ie = kmemdup(setup->ie, setup->ie_len,
1655 GFP_KERNEL);
1656 if (!new_ie)
1657 return -ENOMEM;
1658 }
1659 ifmsh->ie_len = setup->ie_len;
1660 ifmsh->ie = new_ie;
1661 kfree(old_ie);
1662
1663 /* now copy the rest of the setup parameters */
1664 ifmsh->mesh_id_len = setup->mesh_id_len;
1665 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1666 ifmsh->mesh_sp_id = setup->sync_method;
1667 ifmsh->mesh_pp_id = setup->path_sel_proto;
1668 ifmsh->mesh_pm_id = setup->path_metric;
1669 ifmsh->user_mpm = setup->user_mpm;
1670 ifmsh->mesh_auth_id = setup->auth_id;
1671 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1672 if (setup->is_authenticated)
1673 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1674 if (setup->is_secure)
1675 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1676
1677 /* mcast rate setting in Mesh Node */
1678 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1679 sizeof(setup->mcast_rate));
1680 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1681
1682 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1683 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1684
1685 return 0;
1686 }
1687
1688 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1689 struct net_device *dev, u32 mask,
1690 const struct mesh_config *nconf)
1691 {
1692 struct mesh_config *conf;
1693 struct ieee80211_sub_if_data *sdata;
1694 struct ieee80211_if_mesh *ifmsh;
1695
1696 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1697 ifmsh = &sdata->u.mesh;
1698
1699 /* Set the config options which we are interested in setting */
1700 conf = &(sdata->u.mesh.mshcfg);
1701 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1702 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1703 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1704 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1705 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1706 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1707 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1708 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1709 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1710 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1711 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1712 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1713 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1714 conf->element_ttl = nconf->element_ttl;
1715 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1716 if (ifmsh->user_mpm)
1717 return -EBUSY;
1718 conf->auto_open_plinks = nconf->auto_open_plinks;
1719 }
1720 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1721 conf->dot11MeshNbrOffsetMaxNeighbor =
1722 nconf->dot11MeshNbrOffsetMaxNeighbor;
1723 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1724 conf->dot11MeshHWMPmaxPREQretries =
1725 nconf->dot11MeshHWMPmaxPREQretries;
1726 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1727 conf->path_refresh_time = nconf->path_refresh_time;
1728 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1729 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1730 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1731 conf->dot11MeshHWMPactivePathTimeout =
1732 nconf->dot11MeshHWMPactivePathTimeout;
1733 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1734 conf->dot11MeshHWMPpreqMinInterval =
1735 nconf->dot11MeshHWMPpreqMinInterval;
1736 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1737 conf->dot11MeshHWMPperrMinInterval =
1738 nconf->dot11MeshHWMPperrMinInterval;
1739 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1740 mask))
1741 conf->dot11MeshHWMPnetDiameterTraversalTime =
1742 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1743 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1744 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1745 ieee80211_mesh_root_setup(ifmsh);
1746 }
1747 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1748 /* our current gate announcement implementation rides on root
1749 * announcements, so require this ifmsh to also be a root node
1750 * */
1751 if (nconf->dot11MeshGateAnnouncementProtocol &&
1752 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1753 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1754 ieee80211_mesh_root_setup(ifmsh);
1755 }
1756 conf->dot11MeshGateAnnouncementProtocol =
1757 nconf->dot11MeshGateAnnouncementProtocol;
1758 }
1759 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1760 conf->dot11MeshHWMPRannInterval =
1761 nconf->dot11MeshHWMPRannInterval;
1762 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1763 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1764 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1765 /* our RSSI threshold implementation is supported only for
1766 * devices that report signal in dBm.
1767 */
1768 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1769 return -ENOTSUPP;
1770 conf->rssi_threshold = nconf->rssi_threshold;
1771 }
1772 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1773 conf->ht_opmode = nconf->ht_opmode;
1774 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1775 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1776 }
1777 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1778 conf->dot11MeshHWMPactivePathToRootTimeout =
1779 nconf->dot11MeshHWMPactivePathToRootTimeout;
1780 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1781 conf->dot11MeshHWMProotInterval =
1782 nconf->dot11MeshHWMProotInterval;
1783 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1784 conf->dot11MeshHWMPconfirmationInterval =
1785 nconf->dot11MeshHWMPconfirmationInterval;
1786 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1787 conf->power_mode = nconf->power_mode;
1788 ieee80211_mps_local_status_update(sdata);
1789 }
1790 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1791 conf->dot11MeshAwakeWindowDuration =
1792 nconf->dot11MeshAwakeWindowDuration;
1793 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1794 conf->plink_timeout = nconf->plink_timeout;
1795 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1796 return 0;
1797 }
1798
1799 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1800 const struct mesh_config *conf,
1801 const struct mesh_setup *setup)
1802 {
1803 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1804 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1805 int err;
1806
1807 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1808 err = copy_mesh_setup(ifmsh, setup);
1809 if (err)
1810 return err;
1811
1812 /* can mesh use other SMPS modes? */
1813 sdata->smps_mode = IEEE80211_SMPS_OFF;
1814 sdata->needed_rx_chains = sdata->local->rx_chains;
1815
1816 mutex_lock(&sdata->local->mtx);
1817 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1818 IEEE80211_CHANCTX_SHARED);
1819 mutex_unlock(&sdata->local->mtx);
1820 if (err)
1821 return err;
1822
1823 return ieee80211_start_mesh(sdata);
1824 }
1825
1826 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1827 {
1828 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1829
1830 ieee80211_stop_mesh(sdata);
1831 mutex_lock(&sdata->local->mtx);
1832 ieee80211_vif_release_channel(sdata);
1833 mutex_unlock(&sdata->local->mtx);
1834
1835 return 0;
1836 }
1837 #endif
1838
1839 static int ieee80211_change_bss(struct wiphy *wiphy,
1840 struct net_device *dev,
1841 struct bss_parameters *params)
1842 {
1843 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1844 enum ieee80211_band band;
1845 u32 changed = 0;
1846
1847 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1848 return -ENOENT;
1849
1850 band = ieee80211_get_sdata_band(sdata);
1851
1852 if (params->use_cts_prot >= 0) {
1853 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1854 changed |= BSS_CHANGED_ERP_CTS_PROT;
1855 }
1856 if (params->use_short_preamble >= 0) {
1857 sdata->vif.bss_conf.use_short_preamble =
1858 params->use_short_preamble;
1859 changed |= BSS_CHANGED_ERP_PREAMBLE;
1860 }
1861
1862 if (!sdata->vif.bss_conf.use_short_slot &&
1863 band == IEEE80211_BAND_5GHZ) {
1864 sdata->vif.bss_conf.use_short_slot = true;
1865 changed |= BSS_CHANGED_ERP_SLOT;
1866 }
1867
1868 if (params->use_short_slot_time >= 0) {
1869 sdata->vif.bss_conf.use_short_slot =
1870 params->use_short_slot_time;
1871 changed |= BSS_CHANGED_ERP_SLOT;
1872 }
1873
1874 if (params->basic_rates) {
1875 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1876 wiphy->bands[band],
1877 params->basic_rates,
1878 params->basic_rates_len,
1879 &sdata->vif.bss_conf.basic_rates);
1880 changed |= BSS_CHANGED_BASIC_RATES;
1881 }
1882
1883 if (params->ap_isolate >= 0) {
1884 if (params->ap_isolate)
1885 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1886 else
1887 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1888 }
1889
1890 if (params->ht_opmode >= 0) {
1891 sdata->vif.bss_conf.ht_operation_mode =
1892 (u16) params->ht_opmode;
1893 changed |= BSS_CHANGED_HT;
1894 }
1895
1896 if (params->p2p_ctwindow >= 0) {
1897 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1898 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1899 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1900 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1901 changed |= BSS_CHANGED_P2P_PS;
1902 }
1903
1904 if (params->p2p_opp_ps > 0) {
1905 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1906 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1907 changed |= BSS_CHANGED_P2P_PS;
1908 } else if (params->p2p_opp_ps == 0) {
1909 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1910 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1911 changed |= BSS_CHANGED_P2P_PS;
1912 }
1913
1914 ieee80211_bss_info_change_notify(sdata, changed);
1915
1916 return 0;
1917 }
1918
1919 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1920 struct net_device *dev,
1921 struct ieee80211_txq_params *params)
1922 {
1923 struct ieee80211_local *local = wiphy_priv(wiphy);
1924 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1925 struct ieee80211_tx_queue_params p;
1926
1927 if (!local->ops->conf_tx)
1928 return -EOPNOTSUPP;
1929
1930 if (local->hw.queues < IEEE80211_NUM_ACS)
1931 return -EOPNOTSUPP;
1932
1933 memset(&p, 0, sizeof(p));
1934 p.aifs = params->aifs;
1935 p.cw_max = params->cwmax;
1936 p.cw_min = params->cwmin;
1937 p.txop = params->txop;
1938
1939 /*
1940 * Setting tx queue params disables u-apsd because it's only
1941 * called in master mode.
1942 */
1943 p.uapsd = false;
1944
1945 sdata->tx_conf[params->ac] = p;
1946 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1947 wiphy_debug(local->hw.wiphy,
1948 "failed to set TX queue parameters for AC %d\n",
1949 params->ac);
1950 return -EINVAL;
1951 }
1952
1953 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1954
1955 return 0;
1956 }
1957
1958 #ifdef CONFIG_PM
1959 static int ieee80211_suspend(struct wiphy *wiphy,
1960 struct cfg80211_wowlan *wowlan)
1961 {
1962 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1963 }
1964
1965 static int ieee80211_resume(struct wiphy *wiphy)
1966 {
1967 return __ieee80211_resume(wiphy_priv(wiphy));
1968 }
1969 #else
1970 #define ieee80211_suspend NULL
1971 #define ieee80211_resume NULL
1972 #endif
1973
1974 static int ieee80211_scan(struct wiphy *wiphy,
1975 struct cfg80211_scan_request *req)
1976 {
1977 struct ieee80211_sub_if_data *sdata;
1978
1979 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1980
1981 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1982 case NL80211_IFTYPE_STATION:
1983 case NL80211_IFTYPE_ADHOC:
1984 case NL80211_IFTYPE_MESH_POINT:
1985 case NL80211_IFTYPE_P2P_CLIENT:
1986 case NL80211_IFTYPE_P2P_DEVICE:
1987 break;
1988 case NL80211_IFTYPE_P2P_GO:
1989 if (sdata->local->ops->hw_scan)
1990 break;
1991 /*
1992 * FIXME: implement NoA while scanning in software,
1993 * for now fall through to allow scanning only when
1994 * beaconing hasn't been configured yet
1995 */
1996 case NL80211_IFTYPE_AP:
1997 /*
1998 * If the scan has been forced (and the driver supports
1999 * forcing), don't care about being beaconing already.
2000 * This will create problems to the attached stations (e.g. all
2001 * the frames sent while scanning on other channel will be
2002 * lost)
2003 */
2004 if (sdata->u.ap.beacon &&
2005 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2006 !(req->flags & NL80211_SCAN_FLAG_AP)))
2007 return -EOPNOTSUPP;
2008 break;
2009 default:
2010 return -EOPNOTSUPP;
2011 }
2012
2013 return ieee80211_request_scan(sdata, req);
2014 }
2015
2016 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2017 {
2018 ieee80211_scan_cancel(wiphy_priv(wiphy));
2019 }
2020
2021 static int
2022 ieee80211_sched_scan_start(struct wiphy *wiphy,
2023 struct net_device *dev,
2024 struct cfg80211_sched_scan_request *req)
2025 {
2026 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2027
2028 if (!sdata->local->ops->sched_scan_start)
2029 return -EOPNOTSUPP;
2030
2031 return ieee80211_request_sched_scan_start(sdata, req);
2032 }
2033
2034 static int
2035 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2036 {
2037 struct ieee80211_local *local = wiphy_priv(wiphy);
2038
2039 if (!local->ops->sched_scan_stop)
2040 return -EOPNOTSUPP;
2041
2042 return ieee80211_request_sched_scan_stop(local);
2043 }
2044
2045 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2046 struct cfg80211_auth_request *req)
2047 {
2048 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2049 }
2050
2051 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2052 struct cfg80211_assoc_request *req)
2053 {
2054 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2055 }
2056
2057 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2058 struct cfg80211_deauth_request *req)
2059 {
2060 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2061 }
2062
2063 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2064 struct cfg80211_disassoc_request *req)
2065 {
2066 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2067 }
2068
2069 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2070 struct cfg80211_ibss_params *params)
2071 {
2072 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2073 }
2074
2075 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2076 {
2077 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2078 }
2079
2080 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2081 struct ocb_setup *setup)
2082 {
2083 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2084 }
2085
2086 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2087 {
2088 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2089 }
2090
2091 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2092 int rate[IEEE80211_NUM_BANDS])
2093 {
2094 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2095
2096 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2097 sizeof(int) * IEEE80211_NUM_BANDS);
2098
2099 return 0;
2100 }
2101
2102 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2103 {
2104 struct ieee80211_local *local = wiphy_priv(wiphy);
2105 int err;
2106
2107 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2108 ieee80211_check_fast_xmit_all(local);
2109
2110 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2111
2112 if (err) {
2113 ieee80211_check_fast_xmit_all(local);
2114 return err;
2115 }
2116 }
2117
2118 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2119 (changed & WIPHY_PARAM_DYN_ACK)) {
2120 s16 coverage_class;
2121
2122 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2123 wiphy->coverage_class : -1;
2124 err = drv_set_coverage_class(local, coverage_class);
2125
2126 if (err)
2127 return err;
2128 }
2129
2130 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2131 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2132
2133 if (err)
2134 return err;
2135 }
2136
2137 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2138 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2139 return -EINVAL;
2140 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2141 }
2142 if (changed & WIPHY_PARAM_RETRY_LONG) {
2143 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2144 return -EINVAL;
2145 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2146 }
2147 if (changed &
2148 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2149 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2150
2151 return 0;
2152 }
2153
2154 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2155 struct wireless_dev *wdev,
2156 enum nl80211_tx_power_setting type, int mbm)
2157 {
2158 struct ieee80211_local *local = wiphy_priv(wiphy);
2159 struct ieee80211_sub_if_data *sdata;
2160 enum nl80211_tx_power_setting txp_type = type;
2161 bool update_txp_type = false;
2162
2163 if (wdev) {
2164 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2165
2166 switch (type) {
2167 case NL80211_TX_POWER_AUTOMATIC:
2168 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2169 txp_type = NL80211_TX_POWER_LIMITED;
2170 break;
2171 case NL80211_TX_POWER_LIMITED:
2172 case NL80211_TX_POWER_FIXED:
2173 if (mbm < 0 || (mbm % 100))
2174 return -EOPNOTSUPP;
2175 sdata->user_power_level = MBM_TO_DBM(mbm);
2176 break;
2177 }
2178
2179 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2180 update_txp_type = true;
2181 sdata->vif.bss_conf.txpower_type = txp_type;
2182 }
2183
2184 ieee80211_recalc_txpower(sdata, update_txp_type);
2185
2186 return 0;
2187 }
2188
2189 switch (type) {
2190 case NL80211_TX_POWER_AUTOMATIC:
2191 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2192 txp_type = NL80211_TX_POWER_LIMITED;
2193 break;
2194 case NL80211_TX_POWER_LIMITED:
2195 case NL80211_TX_POWER_FIXED:
2196 if (mbm < 0 || (mbm % 100))
2197 return -EOPNOTSUPP;
2198 local->user_power_level = MBM_TO_DBM(mbm);
2199 break;
2200 }
2201
2202 mutex_lock(&local->iflist_mtx);
2203 list_for_each_entry(sdata, &local->interfaces, list) {
2204 sdata->user_power_level = local->user_power_level;
2205 if (txp_type != sdata->vif.bss_conf.txpower_type)
2206 update_txp_type = true;
2207 sdata->vif.bss_conf.txpower_type = txp_type;
2208 }
2209 list_for_each_entry(sdata, &local->interfaces, list)
2210 ieee80211_recalc_txpower(sdata, update_txp_type);
2211 mutex_unlock(&local->iflist_mtx);
2212
2213 return 0;
2214 }
2215
2216 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2217 struct wireless_dev *wdev,
2218 int *dbm)
2219 {
2220 struct ieee80211_local *local = wiphy_priv(wiphy);
2221 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2222
2223 if (local->ops->get_txpower)
2224 return drv_get_txpower(local, sdata, dbm);
2225
2226 if (!local->use_chanctx)
2227 *dbm = local->hw.conf.power_level;
2228 else
2229 *dbm = sdata->vif.bss_conf.txpower;
2230
2231 return 0;
2232 }
2233
2234 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2235 const u8 *addr)
2236 {
2237 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2238
2239 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2240
2241 return 0;
2242 }
2243
2244 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2245 {
2246 struct ieee80211_local *local = wiphy_priv(wiphy);
2247
2248 drv_rfkill_poll(local);
2249 }
2250
2251 #ifdef CONFIG_NL80211_TESTMODE
2252 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2253 struct wireless_dev *wdev,
2254 void *data, int len)
2255 {
2256 struct ieee80211_local *local = wiphy_priv(wiphy);
2257 struct ieee80211_vif *vif = NULL;
2258
2259 if (!local->ops->testmode_cmd)
2260 return -EOPNOTSUPP;
2261
2262 if (wdev) {
2263 struct ieee80211_sub_if_data *sdata;
2264
2265 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2266 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2267 vif = &sdata->vif;
2268 }
2269
2270 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2271 }
2272
2273 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2274 struct sk_buff *skb,
2275 struct netlink_callback *cb,
2276 void *data, int len)
2277 {
2278 struct ieee80211_local *local = wiphy_priv(wiphy);
2279
2280 if (!local->ops->testmode_dump)
2281 return -EOPNOTSUPP;
2282
2283 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2284 }
2285 #endif
2286
2287 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2288 enum ieee80211_smps_mode smps_mode)
2289 {
2290 struct sta_info *sta;
2291 enum ieee80211_smps_mode old_req;
2292
2293 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2294 return -EINVAL;
2295
2296 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2297 return 0;
2298
2299 old_req = sdata->u.ap.req_smps;
2300 sdata->u.ap.req_smps = smps_mode;
2301
2302 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2303 if (old_req == smps_mode ||
2304 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2305 return 0;
2306
2307 /* If no associated stations, there's no need to do anything */
2308 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2309 sdata->smps_mode = smps_mode;
2310 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2311 return 0;
2312 }
2313
2314 ht_dbg(sdata,
2315 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2316 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2317
2318 mutex_lock(&sdata->local->sta_mtx);
2319 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2320 /*
2321 * Only stations associated to our AP and
2322 * associated VLANs
2323 */
2324 if (sta->sdata->bss != &sdata->u.ap)
2325 continue;
2326
2327 /* This station doesn't support MIMO - skip it */
2328 if (sta_info_tx_streams(sta) == 1)
2329 continue;
2330
2331 /*
2332 * Don't wake up a STA just to send the action frame
2333 * unless we are getting more restrictive.
2334 */
2335 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2336 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2337 smps_mode)) {
2338 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2339 sta->sta.addr);
2340 continue;
2341 }
2342
2343 /*
2344 * If the STA is not authorized, wait until it gets
2345 * authorized and the action frame will be sent then.
2346 */
2347 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2348 continue;
2349
2350 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2351 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2352 sdata->vif.bss_conf.bssid);
2353 }
2354 mutex_unlock(&sdata->local->sta_mtx);
2355
2356 sdata->smps_mode = smps_mode;
2357 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2358
2359 return 0;
2360 }
2361
2362 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2363 enum ieee80211_smps_mode smps_mode)
2364 {
2365 const u8 *ap;
2366 enum ieee80211_smps_mode old_req;
2367 int err;
2368 struct sta_info *sta;
2369 bool tdls_peer_found = false;
2370
2371 lockdep_assert_held(&sdata->wdev.mtx);
2372
2373 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2374 return -EINVAL;
2375
2376 old_req = sdata->u.mgd.req_smps;
2377 sdata->u.mgd.req_smps = smps_mode;
2378
2379 if (old_req == smps_mode &&
2380 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2381 return 0;
2382
2383 /*
2384 * If not associated, or current association is not an HT
2385 * association, there's no need to do anything, just store
2386 * the new value until we associate.
2387 */
2388 if (!sdata->u.mgd.associated ||
2389 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2390 return 0;
2391
2392 ap = sdata->u.mgd.associated->bssid;
2393
2394 rcu_read_lock();
2395 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2396 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2397 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2398 continue;
2399
2400 tdls_peer_found = true;
2401 break;
2402 }
2403 rcu_read_unlock();
2404
2405 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2406 if (tdls_peer_found || !sdata->u.mgd.powersave)
2407 smps_mode = IEEE80211_SMPS_OFF;
2408 else
2409 smps_mode = IEEE80211_SMPS_DYNAMIC;
2410 }
2411
2412 /* send SM PS frame to AP */
2413 err = ieee80211_send_smps_action(sdata, smps_mode,
2414 ap, ap);
2415 if (err)
2416 sdata->u.mgd.req_smps = old_req;
2417 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2418 ieee80211_teardown_tdls_peers(sdata);
2419
2420 return err;
2421 }
2422
2423 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2424 bool enabled, int timeout)
2425 {
2426 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2427 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2428
2429 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2430 return -EOPNOTSUPP;
2431
2432 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2433 return -EOPNOTSUPP;
2434
2435 if (enabled == sdata->u.mgd.powersave &&
2436 timeout == local->dynamic_ps_forced_timeout)
2437 return 0;
2438
2439 sdata->u.mgd.powersave = enabled;
2440 local->dynamic_ps_forced_timeout = timeout;
2441
2442 /* no change, but if automatic follow powersave */
2443 sdata_lock(sdata);
2444 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2445 sdata_unlock(sdata);
2446
2447 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2448 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2449
2450 ieee80211_recalc_ps(local);
2451 ieee80211_recalc_ps_vif(sdata);
2452
2453 return 0;
2454 }
2455
2456 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2457 struct net_device *dev,
2458 s32 rssi_thold, u32 rssi_hyst)
2459 {
2460 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2461 struct ieee80211_vif *vif = &sdata->vif;
2462 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2463
2464 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2465 rssi_hyst == bss_conf->cqm_rssi_hyst)
2466 return 0;
2467
2468 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2469 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2470 return -EOPNOTSUPP;
2471
2472 bss_conf->cqm_rssi_thold = rssi_thold;
2473 bss_conf->cqm_rssi_hyst = rssi_hyst;
2474 sdata->u.mgd.last_cqm_event_signal = 0;
2475
2476 /* tell the driver upon association, unless already associated */
2477 if (sdata->u.mgd.associated &&
2478 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2479 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2480
2481 return 0;
2482 }
2483
2484 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2485 struct net_device *dev,
2486 const u8 *addr,
2487 const struct cfg80211_bitrate_mask *mask)
2488 {
2489 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2490 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2491 int i, ret;
2492
2493 if (!ieee80211_sdata_running(sdata))
2494 return -ENETDOWN;
2495
2496 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2497 ret = drv_set_bitrate_mask(local, sdata, mask);
2498 if (ret)
2499 return ret;
2500 }
2501
2502 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2503 struct ieee80211_supported_band *sband = wiphy->bands[i];
2504 int j;
2505
2506 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2507 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2508 sizeof(mask->control[i].ht_mcs));
2509 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2510 mask->control[i].vht_mcs,
2511 sizeof(mask->control[i].vht_mcs));
2512
2513 sdata->rc_has_mcs_mask[i] = false;
2514 sdata->rc_has_vht_mcs_mask[i] = false;
2515 if (!sband)
2516 continue;
2517
2518 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2519 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2520 sdata->rc_has_mcs_mask[i] = true;
2521 break;
2522 }
2523 }
2524
2525 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2526 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2527 sdata->rc_has_vht_mcs_mask[i] = true;
2528 break;
2529 }
2530 }
2531 }
2532
2533 return 0;
2534 }
2535
2536 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2537 struct net_device *dev,
2538 struct cfg80211_chan_def *chandef,
2539 u32 cac_time_ms)
2540 {
2541 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2542 struct ieee80211_local *local = sdata->local;
2543 int err;
2544
2545 mutex_lock(&local->mtx);
2546 if (!list_empty(&local->roc_list) || local->scanning) {
2547 err = -EBUSY;
2548 goto out_unlock;
2549 }
2550
2551 /* whatever, but channel contexts should not complain about that one */
2552 sdata->smps_mode = IEEE80211_SMPS_OFF;
2553 sdata->needed_rx_chains = local->rx_chains;
2554
2555 err = ieee80211_vif_use_channel(sdata, chandef,
2556 IEEE80211_CHANCTX_SHARED);
2557 if (err)
2558 goto out_unlock;
2559
2560 ieee80211_queue_delayed_work(&sdata->local->hw,
2561 &sdata->dfs_cac_timer_work,
2562 msecs_to_jiffies(cac_time_ms));
2563
2564 out_unlock:
2565 mutex_unlock(&local->mtx);
2566 return err;
2567 }
2568
2569 static struct cfg80211_beacon_data *
2570 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2571 {
2572 struct cfg80211_beacon_data *new_beacon;
2573 u8 *pos;
2574 int len;
2575
2576 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2577 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2578 beacon->probe_resp_len;
2579
2580 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2581 if (!new_beacon)
2582 return NULL;
2583
2584 pos = (u8 *)(new_beacon + 1);
2585 if (beacon->head_len) {
2586 new_beacon->head_len = beacon->head_len;
2587 new_beacon->head = pos;
2588 memcpy(pos, beacon->head, beacon->head_len);
2589 pos += beacon->head_len;
2590 }
2591 if (beacon->tail_len) {
2592 new_beacon->tail_len = beacon->tail_len;
2593 new_beacon->tail = pos;
2594 memcpy(pos, beacon->tail, beacon->tail_len);
2595 pos += beacon->tail_len;
2596 }
2597 if (beacon->beacon_ies_len) {
2598 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2599 new_beacon->beacon_ies = pos;
2600 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2601 pos += beacon->beacon_ies_len;
2602 }
2603 if (beacon->proberesp_ies_len) {
2604 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2605 new_beacon->proberesp_ies = pos;
2606 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2607 pos += beacon->proberesp_ies_len;
2608 }
2609 if (beacon->assocresp_ies_len) {
2610 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2611 new_beacon->assocresp_ies = pos;
2612 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2613 pos += beacon->assocresp_ies_len;
2614 }
2615 if (beacon->probe_resp_len) {
2616 new_beacon->probe_resp_len = beacon->probe_resp_len;
2617 beacon->probe_resp = pos;
2618 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2619 pos += beacon->probe_resp_len;
2620 }
2621
2622 return new_beacon;
2623 }
2624
2625 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2626 {
2627 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2628
2629 ieee80211_queue_work(&sdata->local->hw,
2630 &sdata->csa_finalize_work);
2631 }
2632 EXPORT_SYMBOL(ieee80211_csa_finish);
2633
2634 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2635 u32 *changed)
2636 {
2637 int err;
2638
2639 switch (sdata->vif.type) {
2640 case NL80211_IFTYPE_AP:
2641 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2642 NULL);
2643 kfree(sdata->u.ap.next_beacon);
2644 sdata->u.ap.next_beacon = NULL;
2645
2646 if (err < 0)
2647 return err;
2648 *changed |= err;
2649 break;
2650 case NL80211_IFTYPE_ADHOC:
2651 err = ieee80211_ibss_finish_csa(sdata);
2652 if (err < 0)
2653 return err;
2654 *changed |= err;
2655 break;
2656 #ifdef CONFIG_MAC80211_MESH
2657 case NL80211_IFTYPE_MESH_POINT:
2658 err = ieee80211_mesh_finish_csa(sdata);
2659 if (err < 0)
2660 return err;
2661 *changed |= err;
2662 break;
2663 #endif
2664 default:
2665 WARN_ON(1);
2666 return -EINVAL;
2667 }
2668
2669 return 0;
2670 }
2671
2672 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2673 {
2674 struct ieee80211_local *local = sdata->local;
2675 u32 changed = 0;
2676 int err;
2677
2678 sdata_assert_lock(sdata);
2679 lockdep_assert_held(&local->mtx);
2680 lockdep_assert_held(&local->chanctx_mtx);
2681
2682 /*
2683 * using reservation isn't immediate as it may be deferred until later
2684 * with multi-vif. once reservation is complete it will re-schedule the
2685 * work with no reserved_chanctx so verify chandef to check if it
2686 * completed successfully
2687 */
2688
2689 if (sdata->reserved_chanctx) {
2690 /*
2691 * with multi-vif csa driver may call ieee80211_csa_finish()
2692 * many times while waiting for other interfaces to use their
2693 * reservations
2694 */
2695 if (sdata->reserved_ready)
2696 return 0;
2697
2698 return ieee80211_vif_use_reserved_context(sdata);
2699 }
2700
2701 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2702 &sdata->csa_chandef))
2703 return -EINVAL;
2704
2705 sdata->vif.csa_active = false;
2706
2707 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2708 if (err)
2709 return err;
2710
2711 ieee80211_bss_info_change_notify(sdata, changed);
2712
2713 if (sdata->csa_block_tx) {
2714 ieee80211_wake_vif_queues(local, sdata,
2715 IEEE80211_QUEUE_STOP_REASON_CSA);
2716 sdata->csa_block_tx = false;
2717 }
2718
2719 err = drv_post_channel_switch(sdata);
2720 if (err)
2721 return err;
2722
2723 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2724
2725 return 0;
2726 }
2727
2728 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2729 {
2730 if (__ieee80211_csa_finalize(sdata)) {
2731 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2732 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2733 GFP_KERNEL);
2734 }
2735 }
2736
2737 void ieee80211_csa_finalize_work(struct work_struct *work)
2738 {
2739 struct ieee80211_sub_if_data *sdata =
2740 container_of(work, struct ieee80211_sub_if_data,
2741 csa_finalize_work);
2742 struct ieee80211_local *local = sdata->local;
2743
2744 sdata_lock(sdata);
2745 mutex_lock(&local->mtx);
2746 mutex_lock(&local->chanctx_mtx);
2747
2748 /* AP might have been stopped while waiting for the lock. */
2749 if (!sdata->vif.csa_active)
2750 goto unlock;
2751
2752 if (!ieee80211_sdata_running(sdata))
2753 goto unlock;
2754
2755 ieee80211_csa_finalize(sdata);
2756
2757 unlock:
2758 mutex_unlock(&local->chanctx_mtx);
2759 mutex_unlock(&local->mtx);
2760 sdata_unlock(sdata);
2761 }
2762
2763 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2764 struct cfg80211_csa_settings *params,
2765 u32 *changed)
2766 {
2767 struct ieee80211_csa_settings csa = {};
2768 int err;
2769
2770 switch (sdata->vif.type) {
2771 case NL80211_IFTYPE_AP:
2772 sdata->u.ap.next_beacon =
2773 cfg80211_beacon_dup(&params->beacon_after);
2774 if (!sdata->u.ap.next_beacon)
2775 return -ENOMEM;
2776
2777 /*
2778 * With a count of 0, we don't have to wait for any
2779 * TBTT before switching, so complete the CSA
2780 * immediately. In theory, with a count == 1 we
2781 * should delay the switch until just before the next
2782 * TBTT, but that would complicate things so we switch
2783 * immediately too. If we would delay the switch
2784 * until the next TBTT, we would have to set the probe
2785 * response here.
2786 *
2787 * TODO: A channel switch with count <= 1 without
2788 * sending a CSA action frame is kind of useless,
2789 * because the clients won't know we're changing
2790 * channels. The action frame must be implemented
2791 * either here or in the userspace.
2792 */
2793 if (params->count <= 1)
2794 break;
2795
2796 if ((params->n_counter_offsets_beacon >
2797 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
2798 (params->n_counter_offsets_presp >
2799 IEEE80211_MAX_CSA_COUNTERS_NUM))
2800 return -EINVAL;
2801
2802 csa.counter_offsets_beacon = params->counter_offsets_beacon;
2803 csa.counter_offsets_presp = params->counter_offsets_presp;
2804 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
2805 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
2806 csa.count = params->count;
2807
2808 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
2809 if (err < 0) {
2810 kfree(sdata->u.ap.next_beacon);
2811 return err;
2812 }
2813 *changed |= err;
2814
2815 break;
2816 case NL80211_IFTYPE_ADHOC:
2817 if (!sdata->vif.bss_conf.ibss_joined)
2818 return -EINVAL;
2819
2820 if (params->chandef.width != sdata->u.ibss.chandef.width)
2821 return -EINVAL;
2822
2823 switch (params->chandef.width) {
2824 case NL80211_CHAN_WIDTH_40:
2825 if (cfg80211_get_chandef_type(&params->chandef) !=
2826 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
2827 return -EINVAL;
2828 case NL80211_CHAN_WIDTH_5:
2829 case NL80211_CHAN_WIDTH_10:
2830 case NL80211_CHAN_WIDTH_20_NOHT:
2831 case NL80211_CHAN_WIDTH_20:
2832 break;
2833 default:
2834 return -EINVAL;
2835 }
2836
2837 /* changes into another band are not supported */
2838 if (sdata->u.ibss.chandef.chan->band !=
2839 params->chandef.chan->band)
2840 return -EINVAL;
2841
2842 /* see comments in the NL80211_IFTYPE_AP block */
2843 if (params->count > 1) {
2844 err = ieee80211_ibss_csa_beacon(sdata, params);
2845 if (err < 0)
2846 return err;
2847 *changed |= err;
2848 }
2849
2850 ieee80211_send_action_csa(sdata, params);
2851
2852 break;
2853 #ifdef CONFIG_MAC80211_MESH
2854 case NL80211_IFTYPE_MESH_POINT: {
2855 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2856
2857 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
2858 return -EINVAL;
2859
2860 /* changes into another band are not supported */
2861 if (sdata->vif.bss_conf.chandef.chan->band !=
2862 params->chandef.chan->band)
2863 return -EINVAL;
2864
2865 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
2866 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
2867 if (!ifmsh->pre_value)
2868 ifmsh->pre_value = 1;
2869 else
2870 ifmsh->pre_value++;
2871 }
2872
2873 /* see comments in the NL80211_IFTYPE_AP block */
2874 if (params->count > 1) {
2875 err = ieee80211_mesh_csa_beacon(sdata, params);
2876 if (err < 0) {
2877 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
2878 return err;
2879 }
2880 *changed |= err;
2881 }
2882
2883 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
2884 ieee80211_send_action_csa(sdata, params);
2885
2886 break;
2887 }
2888 #endif
2889 default:
2890 return -EOPNOTSUPP;
2891 }
2892
2893 return 0;
2894 }
2895
2896 static int
2897 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2898 struct cfg80211_csa_settings *params)
2899 {
2900 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2901 struct ieee80211_local *local = sdata->local;
2902 struct ieee80211_channel_switch ch_switch;
2903 struct ieee80211_chanctx_conf *conf;
2904 struct ieee80211_chanctx *chanctx;
2905 u32 changed = 0;
2906 int err;
2907
2908 sdata_assert_lock(sdata);
2909 lockdep_assert_held(&local->mtx);
2910
2911 if (!list_empty(&local->roc_list) || local->scanning)
2912 return -EBUSY;
2913
2914 if (sdata->wdev.cac_started)
2915 return -EBUSY;
2916
2917 if (cfg80211_chandef_identical(&params->chandef,
2918 &sdata->vif.bss_conf.chandef))
2919 return -EINVAL;
2920
2921 /* don't allow another channel switch if one is already active. */
2922 if (sdata->vif.csa_active)
2923 return -EBUSY;
2924
2925 mutex_lock(&local->chanctx_mtx);
2926 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2927 lockdep_is_held(&local->chanctx_mtx));
2928 if (!conf) {
2929 err = -EBUSY;
2930 goto out;
2931 }
2932
2933 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
2934 if (!chanctx) {
2935 err = -EBUSY;
2936 goto out;
2937 }
2938
2939 ch_switch.timestamp = 0;
2940 ch_switch.device_timestamp = 0;
2941 ch_switch.block_tx = params->block_tx;
2942 ch_switch.chandef = params->chandef;
2943 ch_switch.count = params->count;
2944
2945 err = drv_pre_channel_switch(sdata, &ch_switch);
2946 if (err)
2947 goto out;
2948
2949 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
2950 chanctx->mode,
2951 params->radar_required);
2952 if (err)
2953 goto out;
2954
2955 /* if reservation is invalid then this will fail */
2956 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
2957 if (err) {
2958 ieee80211_vif_unreserve_chanctx(sdata);
2959 goto out;
2960 }
2961
2962 err = ieee80211_set_csa_beacon(sdata, params, &changed);
2963 if (err) {
2964 ieee80211_vif_unreserve_chanctx(sdata);
2965 goto out;
2966 }
2967
2968 sdata->csa_chandef = params->chandef;
2969 sdata->csa_block_tx = params->block_tx;
2970 sdata->vif.csa_active = true;
2971
2972 if (sdata->csa_block_tx)
2973 ieee80211_stop_vif_queues(local, sdata,
2974 IEEE80211_QUEUE_STOP_REASON_CSA);
2975
2976 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
2977 params->count);
2978
2979 if (changed) {
2980 ieee80211_bss_info_change_notify(sdata, changed);
2981 drv_channel_switch_beacon(sdata, &params->chandef);
2982 } else {
2983 /* if the beacon didn't change, we can finalize immediately */
2984 ieee80211_csa_finalize(sdata);
2985 }
2986
2987 out:
2988 mutex_unlock(&local->chanctx_mtx);
2989 return err;
2990 }
2991
2992 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2993 struct cfg80211_csa_settings *params)
2994 {
2995 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2996 struct ieee80211_local *local = sdata->local;
2997 int err;
2998
2999 mutex_lock(&local->mtx);
3000 err = __ieee80211_channel_switch(wiphy, dev, params);
3001 mutex_unlock(&local->mtx);
3002
3003 return err;
3004 }
3005
3006 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3007 {
3008 lockdep_assert_held(&local->mtx);
3009
3010 local->roc_cookie_counter++;
3011
3012 /* wow, you wrapped 64 bits ... more likely a bug */
3013 if (WARN_ON(local->roc_cookie_counter == 0))
3014 local->roc_cookie_counter++;
3015
3016 return local->roc_cookie_counter;
3017 }
3018
3019 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3020 u64 *cookie, gfp_t gfp)
3021 {
3022 unsigned long spin_flags;
3023 struct sk_buff *ack_skb;
3024 int id;
3025
3026 ack_skb = skb_copy(skb, gfp);
3027 if (!ack_skb)
3028 return -ENOMEM;
3029
3030 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3031 id = idr_alloc(&local->ack_status_frames, ack_skb,
3032 1, 0x10000, GFP_ATOMIC);
3033 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3034
3035 if (id < 0) {
3036 kfree_skb(ack_skb);
3037 return -ENOMEM;
3038 }
3039
3040 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3041
3042 *cookie = ieee80211_mgmt_tx_cookie(local);
3043 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3044
3045 return 0;
3046 }
3047
3048 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3049 struct wireless_dev *wdev,
3050 u16 frame_type, bool reg)
3051 {
3052 struct ieee80211_local *local = wiphy_priv(wiphy);
3053 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3054
3055 switch (frame_type) {
3056 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3057 if (reg) {
3058 local->probe_req_reg++;
3059 sdata->vif.probe_req_reg++;
3060 } else {
3061 if (local->probe_req_reg)
3062 local->probe_req_reg--;
3063
3064 if (sdata->vif.probe_req_reg)
3065 sdata->vif.probe_req_reg--;
3066 }
3067
3068 if (!local->open_count)
3069 break;
3070
3071 if (sdata->vif.probe_req_reg == 1)
3072 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3073 FIF_PROBE_REQ);
3074 else if (sdata->vif.probe_req_reg == 0)
3075 drv_config_iface_filter(local, sdata, 0,
3076 FIF_PROBE_REQ);
3077
3078 ieee80211_configure_filter(local);
3079 break;
3080 default:
3081 break;
3082 }
3083 }
3084
3085 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3086 {
3087 struct ieee80211_local *local = wiphy_priv(wiphy);
3088
3089 if (local->started)
3090 return -EOPNOTSUPP;
3091
3092 return drv_set_antenna(local, tx_ant, rx_ant);
3093 }
3094
3095 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3096 {
3097 struct ieee80211_local *local = wiphy_priv(wiphy);
3098
3099 return drv_get_antenna(local, tx_ant, rx_ant);
3100 }
3101
3102 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3103 struct net_device *dev,
3104 struct cfg80211_gtk_rekey_data *data)
3105 {
3106 struct ieee80211_local *local = wiphy_priv(wiphy);
3107 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3108
3109 if (!local->ops->set_rekey_data)
3110 return -EOPNOTSUPP;
3111
3112 drv_set_rekey_data(local, sdata, data);
3113
3114 return 0;
3115 }
3116
3117 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3118 const u8 *peer, u64 *cookie)
3119 {
3120 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3121 struct ieee80211_local *local = sdata->local;
3122 struct ieee80211_qos_hdr *nullfunc;
3123 struct sk_buff *skb;
3124 int size = sizeof(*nullfunc);
3125 __le16 fc;
3126 bool qos;
3127 struct ieee80211_tx_info *info;
3128 struct sta_info *sta;
3129 struct ieee80211_chanctx_conf *chanctx_conf;
3130 enum ieee80211_band band;
3131 int ret;
3132
3133 /* the lock is needed to assign the cookie later */
3134 mutex_lock(&local->mtx);
3135
3136 rcu_read_lock();
3137 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3138 if (WARN_ON(!chanctx_conf)) {
3139 ret = -EINVAL;
3140 goto unlock;
3141 }
3142 band = chanctx_conf->def.chan->band;
3143 sta = sta_info_get_bss(sdata, peer);
3144 if (sta) {
3145 qos = sta->sta.wme;
3146 } else {
3147 ret = -ENOLINK;
3148 goto unlock;
3149 }
3150
3151 if (qos) {
3152 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3153 IEEE80211_STYPE_QOS_NULLFUNC |
3154 IEEE80211_FCTL_FROMDS);
3155 } else {
3156 size -= 2;
3157 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3158 IEEE80211_STYPE_NULLFUNC |
3159 IEEE80211_FCTL_FROMDS);
3160 }
3161
3162 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3163 if (!skb) {
3164 ret = -ENOMEM;
3165 goto unlock;
3166 }
3167
3168 skb->dev = dev;
3169
3170 skb_reserve(skb, local->hw.extra_tx_headroom);
3171
3172 nullfunc = (void *) skb_put(skb, size);
3173 nullfunc->frame_control = fc;
3174 nullfunc->duration_id = 0;
3175 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3176 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3177 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3178 nullfunc->seq_ctrl = 0;
3179
3180 info = IEEE80211_SKB_CB(skb);
3181
3182 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3183 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3184 info->band = band;
3185
3186 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3187 skb->priority = 7;
3188 if (qos)
3189 nullfunc->qos_ctrl = cpu_to_le16(7);
3190
3191 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3192 if (ret) {
3193 kfree_skb(skb);
3194 goto unlock;
3195 }
3196
3197 local_bh_disable();
3198 ieee80211_xmit(sdata, sta, skb);
3199 local_bh_enable();
3200
3201 ret = 0;
3202 unlock:
3203 rcu_read_unlock();
3204 mutex_unlock(&local->mtx);
3205
3206 return ret;
3207 }
3208
3209 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3210 struct wireless_dev *wdev,
3211 struct cfg80211_chan_def *chandef)
3212 {
3213 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3214 struct ieee80211_local *local = wiphy_priv(wiphy);
3215 struct ieee80211_chanctx_conf *chanctx_conf;
3216 int ret = -ENODATA;
3217
3218 rcu_read_lock();
3219 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3220 if (chanctx_conf) {
3221 *chandef = sdata->vif.bss_conf.chandef;
3222 ret = 0;
3223 } else if (local->open_count > 0 &&
3224 local->open_count == local->monitors &&
3225 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3226 if (local->use_chanctx)
3227 *chandef = local->monitor_chandef;
3228 else
3229 *chandef = local->_oper_chandef;
3230 ret = 0;
3231 }
3232 rcu_read_unlock();
3233
3234 return ret;
3235 }
3236
3237 #ifdef CONFIG_PM
3238 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3239 {
3240 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3241 }
3242 #endif
3243
3244 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3245 struct net_device *dev,
3246 struct cfg80211_qos_map *qos_map)
3247 {
3248 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3249 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3250
3251 if (qos_map) {
3252 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3253 if (!new_qos_map)
3254 return -ENOMEM;
3255 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3256 } else {
3257 /* A NULL qos_map was passed to disable QoS mapping */
3258 new_qos_map = NULL;
3259 }
3260
3261 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3262 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3263 if (old_qos_map)
3264 kfree_rcu(old_qos_map, rcu_head);
3265
3266 return 0;
3267 }
3268
3269 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3270 struct net_device *dev,
3271 struct cfg80211_chan_def *chandef)
3272 {
3273 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3274 int ret;
3275 u32 changed = 0;
3276
3277 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3278 if (ret == 0)
3279 ieee80211_bss_info_change_notify(sdata, changed);
3280
3281 return ret;
3282 }
3283
3284 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3285 u8 tsid, const u8 *peer, u8 up,
3286 u16 admitted_time)
3287 {
3288 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3289 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3290 int ac = ieee802_1d_to_ac[up];
3291
3292 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3293 return -EOPNOTSUPP;
3294
3295 if (!(sdata->wmm_acm & BIT(up)))
3296 return -EINVAL;
3297
3298 if (ifmgd->tx_tspec[ac].admitted_time)
3299 return -EBUSY;
3300
3301 if (admitted_time) {
3302 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3303 ifmgd->tx_tspec[ac].tsid = tsid;
3304 ifmgd->tx_tspec[ac].up = up;
3305 }
3306
3307 return 0;
3308 }
3309
3310 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3311 u8 tsid, const u8 *peer)
3312 {
3313 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3314 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3315 struct ieee80211_local *local = wiphy_priv(wiphy);
3316 int ac;
3317
3318 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3319 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3320
3321 /* skip unused entries */
3322 if (!tx_tspec->admitted_time)
3323 continue;
3324
3325 if (tx_tspec->tsid != tsid)
3326 continue;
3327
3328 /* due to this new packets will be reassigned to non-ACM ACs */
3329 tx_tspec->up = -1;
3330
3331 /* Make sure that all packets have been sent to avoid to
3332 * restore the QoS params on packets that are still on the
3333 * queues.
3334 */
3335 synchronize_net();
3336 ieee80211_flush_queues(local, sdata, false);
3337
3338 /* restore the normal QoS parameters
3339 * (unconditionally to avoid races)
3340 */
3341 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3342 tx_tspec->downgraded = false;
3343 ieee80211_sta_handle_tspec_ac_params(sdata);
3344
3345 /* finally clear all the data */
3346 memset(tx_tspec, 0, sizeof(*tx_tspec));
3347
3348 return 0;
3349 }
3350
3351 return -ENOENT;
3352 }
3353
3354 const struct cfg80211_ops mac80211_config_ops = {
3355 .add_virtual_intf = ieee80211_add_iface,
3356 .del_virtual_intf = ieee80211_del_iface,
3357 .change_virtual_intf = ieee80211_change_iface,
3358 .start_p2p_device = ieee80211_start_p2p_device,
3359 .stop_p2p_device = ieee80211_stop_p2p_device,
3360 .add_key = ieee80211_add_key,
3361 .del_key = ieee80211_del_key,
3362 .get_key = ieee80211_get_key,
3363 .set_default_key = ieee80211_config_default_key,
3364 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3365 .start_ap = ieee80211_start_ap,
3366 .change_beacon = ieee80211_change_beacon,
3367 .stop_ap = ieee80211_stop_ap,
3368 .add_station = ieee80211_add_station,
3369 .del_station = ieee80211_del_station,
3370 .change_station = ieee80211_change_station,
3371 .get_station = ieee80211_get_station,
3372 .dump_station = ieee80211_dump_station,
3373 .dump_survey = ieee80211_dump_survey,
3374 #ifdef CONFIG_MAC80211_MESH
3375 .add_mpath = ieee80211_add_mpath,
3376 .del_mpath = ieee80211_del_mpath,
3377 .change_mpath = ieee80211_change_mpath,
3378 .get_mpath = ieee80211_get_mpath,
3379 .dump_mpath = ieee80211_dump_mpath,
3380 .get_mpp = ieee80211_get_mpp,
3381 .dump_mpp = ieee80211_dump_mpp,
3382 .update_mesh_config = ieee80211_update_mesh_config,
3383 .get_mesh_config = ieee80211_get_mesh_config,
3384 .join_mesh = ieee80211_join_mesh,
3385 .leave_mesh = ieee80211_leave_mesh,
3386 #endif
3387 .join_ocb = ieee80211_join_ocb,
3388 .leave_ocb = ieee80211_leave_ocb,
3389 .change_bss = ieee80211_change_bss,
3390 .set_txq_params = ieee80211_set_txq_params,
3391 .set_monitor_channel = ieee80211_set_monitor_channel,
3392 .suspend = ieee80211_suspend,
3393 .resume = ieee80211_resume,
3394 .scan = ieee80211_scan,
3395 .abort_scan = ieee80211_abort_scan,
3396 .sched_scan_start = ieee80211_sched_scan_start,
3397 .sched_scan_stop = ieee80211_sched_scan_stop,
3398 .auth = ieee80211_auth,
3399 .assoc = ieee80211_assoc,
3400 .deauth = ieee80211_deauth,
3401 .disassoc = ieee80211_disassoc,
3402 .join_ibss = ieee80211_join_ibss,
3403 .leave_ibss = ieee80211_leave_ibss,
3404 .set_mcast_rate = ieee80211_set_mcast_rate,
3405 .set_wiphy_params = ieee80211_set_wiphy_params,
3406 .set_tx_power = ieee80211_set_tx_power,
3407 .get_tx_power = ieee80211_get_tx_power,
3408 .set_wds_peer = ieee80211_set_wds_peer,
3409 .rfkill_poll = ieee80211_rfkill_poll,
3410 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3411 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3412 .set_power_mgmt = ieee80211_set_power_mgmt,
3413 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3414 .remain_on_channel = ieee80211_remain_on_channel,
3415 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3416 .mgmt_tx = ieee80211_mgmt_tx,
3417 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3418 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3419 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3420 .set_antenna = ieee80211_set_antenna,
3421 .get_antenna = ieee80211_get_antenna,
3422 .set_rekey_data = ieee80211_set_rekey_data,
3423 .tdls_oper = ieee80211_tdls_oper,
3424 .tdls_mgmt = ieee80211_tdls_mgmt,
3425 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3426 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3427 .probe_client = ieee80211_probe_client,
3428 .set_noack_map = ieee80211_set_noack_map,
3429 #ifdef CONFIG_PM
3430 .set_wakeup = ieee80211_set_wakeup,
3431 #endif
3432 .get_channel = ieee80211_cfg_get_channel,
3433 .start_radar_detection = ieee80211_start_radar_detection,
3434 .channel_switch = ieee80211_channel_switch,
3435 .set_qos_map = ieee80211_set_qos_map,
3436 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3437 .add_tx_ts = ieee80211_add_tx_ts,
3438 .del_tx_ts = ieee80211_del_tx_ts,
3439 };
Linux with added FPC-III support