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Merge remote-tracking branch 'mkp-scsi/4.8/scsi-fixes' into fixes
[deliverable/linux.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2015 Intel Mobile Communications GmbH
6 *
7 * This file is GPLv2 as found in COPYING.
8 */
9
10 #include <linux/ieee80211.h>
11 #include <linux/nl80211.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/slab.h>
14 #include <net/net_namespace.h>
15 #include <linux/rcupdate.h>
16 #include <linux/if_ether.h>
17 #include <net/cfg80211.h>
18 #include "ieee80211_i.h"
19 #include "driver-ops.h"
20 #include "rate.h"
21 #include "mesh.h"
22 #include "wme.h"
23
24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
25 const char *name,
26 unsigned char name_assign_type,
27 enum nl80211_iftype type,
28 u32 *flags,
29 struct vif_params *params)
30 {
31 struct ieee80211_local *local = wiphy_priv(wiphy);
32 struct wireless_dev *wdev;
33 struct ieee80211_sub_if_data *sdata;
34 int err;
35
36 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
37 if (err)
38 return ERR_PTR(err);
39
40 if (type == NL80211_IFTYPE_MONITOR && flags) {
41 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
42 sdata->u.mntr_flags = *flags;
43 }
44
45 return wdev;
46 }
47
48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
49 {
50 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
51
52 return 0;
53 }
54
55 static int ieee80211_change_iface(struct wiphy *wiphy,
56 struct net_device *dev,
57 enum nl80211_iftype type, u32 *flags,
58 struct vif_params *params)
59 {
60 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
61 int ret;
62
63 ret = ieee80211_if_change_type(sdata, type);
64 if (ret)
65 return ret;
66
67 if (type == NL80211_IFTYPE_AP_VLAN &&
68 params && params->use_4addr == 0) {
69 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
70 ieee80211_check_fast_rx_iface(sdata);
71 } else if (type == NL80211_IFTYPE_STATION &&
72 params && params->use_4addr >= 0) {
73 sdata->u.mgd.use_4addr = params->use_4addr;
74 }
75
76 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
77 struct ieee80211_local *local = sdata->local;
78
79 if (ieee80211_sdata_running(sdata)) {
80 u32 mask = MONITOR_FLAG_COOK_FRAMES |
81 MONITOR_FLAG_ACTIVE;
82
83 /*
84 * Prohibit MONITOR_FLAG_COOK_FRAMES and
85 * MONITOR_FLAG_ACTIVE to be changed while the
86 * interface is up.
87 * Else we would need to add a lot of cruft
88 * to update everything:
89 * cooked_mntrs, monitor and all fif_* counters
90 * reconfigure hardware
91 */
92 if ((*flags & mask) != (sdata->u.mntr_flags & mask))
93 return -EBUSY;
94
95 ieee80211_adjust_monitor_flags(sdata, -1);
96 sdata->u.mntr_flags = *flags;
97 ieee80211_adjust_monitor_flags(sdata, 1);
98
99 ieee80211_configure_filter(local);
100 } else {
101 /*
102 * Because the interface is down, ieee80211_do_stop
103 * and ieee80211_do_open take care of "everything"
104 * mentioned in the comment above.
105 */
106 sdata->u.mntr_flags = *flags;
107 }
108 }
109
110 return 0;
111 }
112
113 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
114 struct wireless_dev *wdev)
115 {
116 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
117 int ret;
118
119 mutex_lock(&sdata->local->chanctx_mtx);
120 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
121 mutex_unlock(&sdata->local->chanctx_mtx);
122 if (ret < 0)
123 return ret;
124
125 return ieee80211_do_open(wdev, true);
126 }
127
128 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
129 struct wireless_dev *wdev)
130 {
131 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
132 }
133
134 static int ieee80211_set_noack_map(struct wiphy *wiphy,
135 struct net_device *dev,
136 u16 noack_map)
137 {
138 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
139
140 sdata->noack_map = noack_map;
141
142 ieee80211_check_fast_xmit_iface(sdata);
143
144 return 0;
145 }
146
147 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
148 u8 key_idx, bool pairwise, const u8 *mac_addr,
149 struct key_params *params)
150 {
151 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
152 struct ieee80211_local *local = sdata->local;
153 struct sta_info *sta = NULL;
154 const struct ieee80211_cipher_scheme *cs = NULL;
155 struct ieee80211_key *key;
156 int err;
157
158 if (!ieee80211_sdata_running(sdata))
159 return -ENETDOWN;
160
161 /* reject WEP and TKIP keys if WEP failed to initialize */
162 switch (params->cipher) {
163 case WLAN_CIPHER_SUITE_WEP40:
164 case WLAN_CIPHER_SUITE_TKIP:
165 case WLAN_CIPHER_SUITE_WEP104:
166 if (IS_ERR(local->wep_tx_tfm))
167 return -EINVAL;
168 break;
169 case WLAN_CIPHER_SUITE_CCMP:
170 case WLAN_CIPHER_SUITE_CCMP_256:
171 case WLAN_CIPHER_SUITE_AES_CMAC:
172 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
173 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
174 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
175 case WLAN_CIPHER_SUITE_GCMP:
176 case WLAN_CIPHER_SUITE_GCMP_256:
177 break;
178 default:
179 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
180 break;
181 }
182
183 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
184 params->key, params->seq_len, params->seq,
185 cs);
186 if (IS_ERR(key))
187 return PTR_ERR(key);
188
189 if (pairwise)
190 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
191
192 mutex_lock(&local->sta_mtx);
193
194 if (mac_addr) {
195 if (ieee80211_vif_is_mesh(&sdata->vif))
196 sta = sta_info_get(sdata, mac_addr);
197 else
198 sta = sta_info_get_bss(sdata, mac_addr);
199 /*
200 * The ASSOC test makes sure the driver is ready to
201 * receive the key. When wpa_supplicant has roamed
202 * using FT, it attempts to set the key before
203 * association has completed, this rejects that attempt
204 * so it will set the key again after association.
205 *
206 * TODO: accept the key if we have a station entry and
207 * add it to the device after the station.
208 */
209 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
210 ieee80211_key_free_unused(key);
211 err = -ENOENT;
212 goto out_unlock;
213 }
214 }
215
216 switch (sdata->vif.type) {
217 case NL80211_IFTYPE_STATION:
218 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
219 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
220 break;
221 case NL80211_IFTYPE_AP:
222 case NL80211_IFTYPE_AP_VLAN:
223 /* Keys without a station are used for TX only */
224 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
225 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
226 break;
227 case NL80211_IFTYPE_ADHOC:
228 /* no MFP (yet) */
229 break;
230 case NL80211_IFTYPE_MESH_POINT:
231 #ifdef CONFIG_MAC80211_MESH
232 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
233 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
234 break;
235 #endif
236 case NL80211_IFTYPE_WDS:
237 case NL80211_IFTYPE_MONITOR:
238 case NL80211_IFTYPE_P2P_DEVICE:
239 case NL80211_IFTYPE_UNSPECIFIED:
240 case NUM_NL80211_IFTYPES:
241 case NL80211_IFTYPE_P2P_CLIENT:
242 case NL80211_IFTYPE_P2P_GO:
243 case NL80211_IFTYPE_OCB:
244 /* shouldn't happen */
245 WARN_ON_ONCE(1);
246 break;
247 }
248
249 if (sta)
250 sta->cipher_scheme = cs;
251
252 err = ieee80211_key_link(key, sdata, sta);
253
254 out_unlock:
255 mutex_unlock(&local->sta_mtx);
256
257 return err;
258 }
259
260 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
261 u8 key_idx, bool pairwise, const u8 *mac_addr)
262 {
263 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
264 struct ieee80211_local *local = sdata->local;
265 struct sta_info *sta;
266 struct ieee80211_key *key = NULL;
267 int ret;
268
269 mutex_lock(&local->sta_mtx);
270 mutex_lock(&local->key_mtx);
271
272 if (mac_addr) {
273 ret = -ENOENT;
274
275 sta = sta_info_get_bss(sdata, mac_addr);
276 if (!sta)
277 goto out_unlock;
278
279 if (pairwise)
280 key = key_mtx_dereference(local, sta->ptk[key_idx]);
281 else
282 key = key_mtx_dereference(local, sta->gtk[key_idx]);
283 } else
284 key = key_mtx_dereference(local, sdata->keys[key_idx]);
285
286 if (!key) {
287 ret = -ENOENT;
288 goto out_unlock;
289 }
290
291 ieee80211_key_free(key, true);
292
293 ret = 0;
294 out_unlock:
295 mutex_unlock(&local->key_mtx);
296 mutex_unlock(&local->sta_mtx);
297
298 return ret;
299 }
300
301 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
302 u8 key_idx, bool pairwise, const u8 *mac_addr,
303 void *cookie,
304 void (*callback)(void *cookie,
305 struct key_params *params))
306 {
307 struct ieee80211_sub_if_data *sdata;
308 struct sta_info *sta = NULL;
309 u8 seq[6] = {0};
310 struct key_params params;
311 struct ieee80211_key *key = NULL;
312 u64 pn64;
313 u32 iv32;
314 u16 iv16;
315 int err = -ENOENT;
316 struct ieee80211_key_seq kseq = {};
317
318 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
319
320 rcu_read_lock();
321
322 if (mac_addr) {
323 sta = sta_info_get_bss(sdata, mac_addr);
324 if (!sta)
325 goto out;
326
327 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
328 key = rcu_dereference(sta->ptk[key_idx]);
329 else if (!pairwise &&
330 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
331 key = rcu_dereference(sta->gtk[key_idx]);
332 } else
333 key = rcu_dereference(sdata->keys[key_idx]);
334
335 if (!key)
336 goto out;
337
338 memset(&params, 0, sizeof(params));
339
340 params.cipher = key->conf.cipher;
341
342 switch (key->conf.cipher) {
343 case WLAN_CIPHER_SUITE_TKIP:
344 pn64 = atomic64_read(&key->conf.tx_pn);
345 iv32 = TKIP_PN_TO_IV32(pn64);
346 iv16 = TKIP_PN_TO_IV16(pn64);
347
348 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
349 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
350 drv_get_key_seq(sdata->local, key, &kseq);
351 iv32 = kseq.tkip.iv32;
352 iv16 = kseq.tkip.iv16;
353 }
354
355 seq[0] = iv16 & 0xff;
356 seq[1] = (iv16 >> 8) & 0xff;
357 seq[2] = iv32 & 0xff;
358 seq[3] = (iv32 >> 8) & 0xff;
359 seq[4] = (iv32 >> 16) & 0xff;
360 seq[5] = (iv32 >> 24) & 0xff;
361 params.seq = seq;
362 params.seq_len = 6;
363 break;
364 case WLAN_CIPHER_SUITE_CCMP:
365 case WLAN_CIPHER_SUITE_CCMP_256:
366 case WLAN_CIPHER_SUITE_AES_CMAC:
367 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
368 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
369 offsetof(typeof(kseq), aes_cmac));
370 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
371 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
372 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
373 offsetof(typeof(kseq), aes_gmac));
374 case WLAN_CIPHER_SUITE_GCMP:
375 case WLAN_CIPHER_SUITE_GCMP_256:
376 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
377 offsetof(typeof(kseq), gcmp));
378
379 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
380 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
381 drv_get_key_seq(sdata->local, key, &kseq);
382 memcpy(seq, kseq.ccmp.pn, 6);
383 } else {
384 pn64 = atomic64_read(&key->conf.tx_pn);
385 seq[0] = pn64;
386 seq[1] = pn64 >> 8;
387 seq[2] = pn64 >> 16;
388 seq[3] = pn64 >> 24;
389 seq[4] = pn64 >> 32;
390 seq[5] = pn64 >> 40;
391 }
392 params.seq = seq;
393 params.seq_len = 6;
394 break;
395 default:
396 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
397 break;
398 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
399 break;
400 drv_get_key_seq(sdata->local, key, &kseq);
401 params.seq = kseq.hw.seq;
402 params.seq_len = kseq.hw.seq_len;
403 break;
404 }
405
406 params.key = key->conf.key;
407 params.key_len = key->conf.keylen;
408
409 callback(cookie, &params);
410 err = 0;
411
412 out:
413 rcu_read_unlock();
414 return err;
415 }
416
417 static int ieee80211_config_default_key(struct wiphy *wiphy,
418 struct net_device *dev,
419 u8 key_idx, bool uni,
420 bool multi)
421 {
422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
423
424 ieee80211_set_default_key(sdata, key_idx, uni, multi);
425
426 return 0;
427 }
428
429 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
430 struct net_device *dev,
431 u8 key_idx)
432 {
433 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
434
435 ieee80211_set_default_mgmt_key(sdata, key_idx);
436
437 return 0;
438 }
439
440 void sta_set_rate_info_tx(struct sta_info *sta,
441 const struct ieee80211_tx_rate *rate,
442 struct rate_info *rinfo)
443 {
444 rinfo->flags = 0;
445 if (rate->flags & IEEE80211_TX_RC_MCS) {
446 rinfo->flags |= RATE_INFO_FLAGS_MCS;
447 rinfo->mcs = rate->idx;
448 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
449 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
450 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
451 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
452 } else {
453 struct ieee80211_supported_band *sband;
454 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
455 u16 brate;
456
457 sband = sta->local->hw.wiphy->bands[
458 ieee80211_get_sdata_band(sta->sdata)];
459 brate = sband->bitrates[rate->idx].bitrate;
460 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
461 }
462 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
463 rinfo->bw = RATE_INFO_BW_40;
464 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
465 rinfo->bw = RATE_INFO_BW_80;
466 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
467 rinfo->bw = RATE_INFO_BW_160;
468 else
469 rinfo->bw = RATE_INFO_BW_20;
470 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
471 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
472 }
473
474 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
475 int idx, u8 *mac, struct station_info *sinfo)
476 {
477 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
478 struct ieee80211_local *local = sdata->local;
479 struct sta_info *sta;
480 int ret = -ENOENT;
481
482 mutex_lock(&local->sta_mtx);
483
484 sta = sta_info_get_by_idx(sdata, idx);
485 if (sta) {
486 ret = 0;
487 memcpy(mac, sta->sta.addr, ETH_ALEN);
488 sta_set_sinfo(sta, sinfo);
489 }
490
491 mutex_unlock(&local->sta_mtx);
492
493 return ret;
494 }
495
496 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
497 int idx, struct survey_info *survey)
498 {
499 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
500
501 return drv_get_survey(local, idx, survey);
502 }
503
504 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
505 const u8 *mac, struct station_info *sinfo)
506 {
507 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
508 struct ieee80211_local *local = sdata->local;
509 struct sta_info *sta;
510 int ret = -ENOENT;
511
512 mutex_lock(&local->sta_mtx);
513
514 sta = sta_info_get_bss(sdata, mac);
515 if (sta) {
516 ret = 0;
517 sta_set_sinfo(sta, sinfo);
518 }
519
520 mutex_unlock(&local->sta_mtx);
521
522 return ret;
523 }
524
525 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
526 struct cfg80211_chan_def *chandef)
527 {
528 struct ieee80211_local *local = wiphy_priv(wiphy);
529 struct ieee80211_sub_if_data *sdata;
530 int ret = 0;
531
532 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
533 return 0;
534
535 mutex_lock(&local->mtx);
536 mutex_lock(&local->iflist_mtx);
537 if (local->use_chanctx) {
538 sdata = rcu_dereference_protected(
539 local->monitor_sdata,
540 lockdep_is_held(&local->iflist_mtx));
541 if (sdata) {
542 ieee80211_vif_release_channel(sdata);
543 ret = ieee80211_vif_use_channel(sdata, chandef,
544 IEEE80211_CHANCTX_EXCLUSIVE);
545 }
546 } else if (local->open_count == local->monitors) {
547 local->_oper_chandef = *chandef;
548 ieee80211_hw_config(local, 0);
549 }
550
551 if (ret == 0)
552 local->monitor_chandef = *chandef;
553 mutex_unlock(&local->iflist_mtx);
554 mutex_unlock(&local->mtx);
555
556 return ret;
557 }
558
559 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
560 const u8 *resp, size_t resp_len,
561 const struct ieee80211_csa_settings *csa)
562 {
563 struct probe_resp *new, *old;
564
565 if (!resp || !resp_len)
566 return 1;
567
568 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
569
570 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
571 if (!new)
572 return -ENOMEM;
573
574 new->len = resp_len;
575 memcpy(new->data, resp, resp_len);
576
577 if (csa)
578 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
579 csa->n_counter_offsets_presp *
580 sizeof(new->csa_counter_offsets[0]));
581
582 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
583 if (old)
584 kfree_rcu(old, rcu_head);
585
586 return 0;
587 }
588
589 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
590 struct cfg80211_beacon_data *params,
591 const struct ieee80211_csa_settings *csa)
592 {
593 struct beacon_data *new, *old;
594 int new_head_len, new_tail_len;
595 int size, err;
596 u32 changed = BSS_CHANGED_BEACON;
597
598 old = sdata_dereference(sdata->u.ap.beacon, sdata);
599
600
601 /* Need to have a beacon head if we don't have one yet */
602 if (!params->head && !old)
603 return -EINVAL;
604
605 /* new or old head? */
606 if (params->head)
607 new_head_len = params->head_len;
608 else
609 new_head_len = old->head_len;
610
611 /* new or old tail? */
612 if (params->tail || !old)
613 /* params->tail_len will be zero for !params->tail */
614 new_tail_len = params->tail_len;
615 else
616 new_tail_len = old->tail_len;
617
618 size = sizeof(*new) + new_head_len + new_tail_len;
619
620 new = kzalloc(size, GFP_KERNEL);
621 if (!new)
622 return -ENOMEM;
623
624 /* start filling the new info now */
625
626 /*
627 * pointers go into the block we allocated,
628 * memory is | beacon_data | head | tail |
629 */
630 new->head = ((u8 *) new) + sizeof(*new);
631 new->tail = new->head + new_head_len;
632 new->head_len = new_head_len;
633 new->tail_len = new_tail_len;
634
635 if (csa) {
636 new->csa_current_counter = csa->count;
637 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
638 csa->n_counter_offsets_beacon *
639 sizeof(new->csa_counter_offsets[0]));
640 }
641
642 /* copy in head */
643 if (params->head)
644 memcpy(new->head, params->head, new_head_len);
645 else
646 memcpy(new->head, old->head, new_head_len);
647
648 /* copy in optional tail */
649 if (params->tail)
650 memcpy(new->tail, params->tail, new_tail_len);
651 else
652 if (old)
653 memcpy(new->tail, old->tail, new_tail_len);
654
655 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
656 params->probe_resp_len, csa);
657 if (err < 0)
658 return err;
659 if (err == 0)
660 changed |= BSS_CHANGED_AP_PROBE_RESP;
661
662 rcu_assign_pointer(sdata->u.ap.beacon, new);
663
664 if (old)
665 kfree_rcu(old, rcu_head);
666
667 return changed;
668 }
669
670 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
671 struct cfg80211_ap_settings *params)
672 {
673 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
674 struct ieee80211_local *local = sdata->local;
675 struct beacon_data *old;
676 struct ieee80211_sub_if_data *vlan;
677 u32 changed = BSS_CHANGED_BEACON_INT |
678 BSS_CHANGED_BEACON_ENABLED |
679 BSS_CHANGED_BEACON |
680 BSS_CHANGED_SSID |
681 BSS_CHANGED_P2P_PS |
682 BSS_CHANGED_TXPOWER;
683 int err;
684
685 old = sdata_dereference(sdata->u.ap.beacon, sdata);
686 if (old)
687 return -EALREADY;
688
689 switch (params->smps_mode) {
690 case NL80211_SMPS_OFF:
691 sdata->smps_mode = IEEE80211_SMPS_OFF;
692 break;
693 case NL80211_SMPS_STATIC:
694 sdata->smps_mode = IEEE80211_SMPS_STATIC;
695 break;
696 case NL80211_SMPS_DYNAMIC:
697 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
698 break;
699 default:
700 return -EINVAL;
701 }
702 sdata->needed_rx_chains = sdata->local->rx_chains;
703
704 mutex_lock(&local->mtx);
705 err = ieee80211_vif_use_channel(sdata, &params->chandef,
706 IEEE80211_CHANCTX_SHARED);
707 if (!err)
708 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
709 mutex_unlock(&local->mtx);
710 if (err)
711 return err;
712
713 /*
714 * Apply control port protocol, this allows us to
715 * not encrypt dynamic WEP control frames.
716 */
717 sdata->control_port_protocol = params->crypto.control_port_ethertype;
718 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
719 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
720 &params->crypto,
721 sdata->vif.type);
722
723 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
724 vlan->control_port_protocol =
725 params->crypto.control_port_ethertype;
726 vlan->control_port_no_encrypt =
727 params->crypto.control_port_no_encrypt;
728 vlan->encrypt_headroom =
729 ieee80211_cs_headroom(sdata->local,
730 &params->crypto,
731 vlan->vif.type);
732 }
733
734 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
735 sdata->vif.bss_conf.dtim_period = params->dtim_period;
736 sdata->vif.bss_conf.enable_beacon = true;
737 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
738
739 sdata->vif.bss_conf.ssid_len = params->ssid_len;
740 if (params->ssid_len)
741 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
742 params->ssid_len);
743 sdata->vif.bss_conf.hidden_ssid =
744 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
745
746 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
747 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
748 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
749 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
750 if (params->p2p_opp_ps)
751 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
752 IEEE80211_P2P_OPPPS_ENABLE_BIT;
753
754 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
755 if (err < 0) {
756 ieee80211_vif_release_channel(sdata);
757 return err;
758 }
759 changed |= err;
760
761 err = drv_start_ap(sdata->local, sdata);
762 if (err) {
763 old = sdata_dereference(sdata->u.ap.beacon, sdata);
764
765 if (old)
766 kfree_rcu(old, rcu_head);
767 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
768 ieee80211_vif_release_channel(sdata);
769 return err;
770 }
771
772 ieee80211_recalc_dtim(local, sdata);
773 ieee80211_bss_info_change_notify(sdata, changed);
774
775 netif_carrier_on(dev);
776 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
777 netif_carrier_on(vlan->dev);
778
779 return 0;
780 }
781
782 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
783 struct cfg80211_beacon_data *params)
784 {
785 struct ieee80211_sub_if_data *sdata;
786 struct beacon_data *old;
787 int err;
788
789 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
790 sdata_assert_lock(sdata);
791
792 /* don't allow changing the beacon while CSA is in place - offset
793 * of channel switch counter may change
794 */
795 if (sdata->vif.csa_active)
796 return -EBUSY;
797
798 old = sdata_dereference(sdata->u.ap.beacon, sdata);
799 if (!old)
800 return -ENOENT;
801
802 err = ieee80211_assign_beacon(sdata, params, NULL);
803 if (err < 0)
804 return err;
805 ieee80211_bss_info_change_notify(sdata, err);
806 return 0;
807 }
808
809 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
810 {
811 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
812 struct ieee80211_sub_if_data *vlan;
813 struct ieee80211_local *local = sdata->local;
814 struct beacon_data *old_beacon;
815 struct probe_resp *old_probe_resp;
816 struct cfg80211_chan_def chandef;
817
818 sdata_assert_lock(sdata);
819
820 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
821 if (!old_beacon)
822 return -ENOENT;
823 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
824
825 /* abort any running channel switch */
826 mutex_lock(&local->mtx);
827 sdata->vif.csa_active = false;
828 if (sdata->csa_block_tx) {
829 ieee80211_wake_vif_queues(local, sdata,
830 IEEE80211_QUEUE_STOP_REASON_CSA);
831 sdata->csa_block_tx = false;
832 }
833
834 mutex_unlock(&local->mtx);
835
836 kfree(sdata->u.ap.next_beacon);
837 sdata->u.ap.next_beacon = NULL;
838
839 /* turn off carrier for this interface and dependent VLANs */
840 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
841 netif_carrier_off(vlan->dev);
842 netif_carrier_off(dev);
843
844 /* remove beacon and probe response */
845 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
846 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
847 kfree_rcu(old_beacon, rcu_head);
848 if (old_probe_resp)
849 kfree_rcu(old_probe_resp, rcu_head);
850 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
851
852 __sta_info_flush(sdata, true);
853 ieee80211_free_keys(sdata, true);
854
855 sdata->vif.bss_conf.enable_beacon = false;
856 sdata->vif.bss_conf.ssid_len = 0;
857 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
858 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
859
860 if (sdata->wdev.cac_started) {
861 chandef = sdata->vif.bss_conf.chandef;
862 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
863 cfg80211_cac_event(sdata->dev, &chandef,
864 NL80211_RADAR_CAC_ABORTED,
865 GFP_KERNEL);
866 }
867
868 drv_stop_ap(sdata->local, sdata);
869
870 /* free all potentially still buffered bcast frames */
871 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
872 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
873
874 mutex_lock(&local->mtx);
875 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
876 ieee80211_vif_release_channel(sdata);
877 mutex_unlock(&local->mtx);
878
879 return 0;
880 }
881
882 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
883 struct iapp_layer2_update {
884 u8 da[ETH_ALEN]; /* broadcast */
885 u8 sa[ETH_ALEN]; /* STA addr */
886 __be16 len; /* 6 */
887 u8 dsap; /* 0 */
888 u8 ssap; /* 0 */
889 u8 control;
890 u8 xid_info[3];
891 } __packed;
892
893 static void ieee80211_send_layer2_update(struct sta_info *sta)
894 {
895 struct iapp_layer2_update *msg;
896 struct sk_buff *skb;
897
898 /* Send Level 2 Update Frame to update forwarding tables in layer 2
899 * bridge devices */
900
901 skb = dev_alloc_skb(sizeof(*msg));
902 if (!skb)
903 return;
904 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
905
906 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
907 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
908
909 eth_broadcast_addr(msg->da);
910 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
911 msg->len = htons(6);
912 msg->dsap = 0;
913 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
914 msg->control = 0xaf; /* XID response lsb.1111F101.
915 * F=0 (no poll command; unsolicited frame) */
916 msg->xid_info[0] = 0x81; /* XID format identifier */
917 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
918 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
919
920 skb->dev = sta->sdata->dev;
921 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
922 memset(skb->cb, 0, sizeof(skb->cb));
923 netif_rx_ni(skb);
924 }
925
926 static int sta_apply_auth_flags(struct ieee80211_local *local,
927 struct sta_info *sta,
928 u32 mask, u32 set)
929 {
930 int ret;
931
932 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
933 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
934 !test_sta_flag(sta, WLAN_STA_AUTH)) {
935 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
936 if (ret)
937 return ret;
938 }
939
940 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
941 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
942 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
943 /*
944 * When peer becomes associated, init rate control as
945 * well. Some drivers require rate control initialized
946 * before drv_sta_state() is called.
947 */
948 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
949 rate_control_rate_init(sta);
950
951 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
952 if (ret)
953 return ret;
954 }
955
956 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
957 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
958 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
959 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
960 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
961 else
962 ret = 0;
963 if (ret)
964 return ret;
965 }
966
967 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
968 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
969 test_sta_flag(sta, WLAN_STA_ASSOC)) {
970 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
971 if (ret)
972 return ret;
973 }
974
975 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
976 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
977 test_sta_flag(sta, WLAN_STA_AUTH)) {
978 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
979 if (ret)
980 return ret;
981 }
982
983 return 0;
984 }
985
986 static void sta_apply_mesh_params(struct ieee80211_local *local,
987 struct sta_info *sta,
988 struct station_parameters *params)
989 {
990 #ifdef CONFIG_MAC80211_MESH
991 struct ieee80211_sub_if_data *sdata = sta->sdata;
992 u32 changed = 0;
993
994 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
995 switch (params->plink_state) {
996 case NL80211_PLINK_ESTAB:
997 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
998 changed = mesh_plink_inc_estab_count(sdata);
999 sta->mesh->plink_state = params->plink_state;
1000 sta->mesh->aid = params->peer_aid;
1001
1002 ieee80211_mps_sta_status_update(sta);
1003 changed |= ieee80211_mps_set_sta_local_pm(sta,
1004 sdata->u.mesh.mshcfg.power_mode);
1005 break;
1006 case NL80211_PLINK_LISTEN:
1007 case NL80211_PLINK_BLOCKED:
1008 case NL80211_PLINK_OPN_SNT:
1009 case NL80211_PLINK_OPN_RCVD:
1010 case NL80211_PLINK_CNF_RCVD:
1011 case NL80211_PLINK_HOLDING:
1012 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1013 changed = mesh_plink_dec_estab_count(sdata);
1014 sta->mesh->plink_state = params->plink_state;
1015
1016 ieee80211_mps_sta_status_update(sta);
1017 changed |= ieee80211_mps_set_sta_local_pm(sta,
1018 NL80211_MESH_POWER_UNKNOWN);
1019 break;
1020 default:
1021 /* nothing */
1022 break;
1023 }
1024 }
1025
1026 switch (params->plink_action) {
1027 case NL80211_PLINK_ACTION_NO_ACTION:
1028 /* nothing */
1029 break;
1030 case NL80211_PLINK_ACTION_OPEN:
1031 changed |= mesh_plink_open(sta);
1032 break;
1033 case NL80211_PLINK_ACTION_BLOCK:
1034 changed |= mesh_plink_block(sta);
1035 break;
1036 }
1037
1038 if (params->local_pm)
1039 changed |= ieee80211_mps_set_sta_local_pm(sta,
1040 params->local_pm);
1041
1042 ieee80211_mbss_info_change_notify(sdata, changed);
1043 #endif
1044 }
1045
1046 static int sta_apply_parameters(struct ieee80211_local *local,
1047 struct sta_info *sta,
1048 struct station_parameters *params)
1049 {
1050 int ret = 0;
1051 struct ieee80211_supported_band *sband;
1052 struct ieee80211_sub_if_data *sdata = sta->sdata;
1053 enum nl80211_band band = ieee80211_get_sdata_band(sdata);
1054 u32 mask, set;
1055
1056 sband = local->hw.wiphy->bands[band];
1057
1058 mask = params->sta_flags_mask;
1059 set = params->sta_flags_set;
1060
1061 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1062 /*
1063 * In mesh mode, ASSOCIATED isn't part of the nl80211
1064 * API but must follow AUTHENTICATED for driver state.
1065 */
1066 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1067 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1068 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1069 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1070 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1071 /*
1072 * TDLS -- everything follows authorized, but
1073 * only becoming authorized is possible, not
1074 * going back
1075 */
1076 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1077 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1078 BIT(NL80211_STA_FLAG_ASSOCIATED);
1079 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1080 BIT(NL80211_STA_FLAG_ASSOCIATED);
1081 }
1082 }
1083
1084 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1085 local->hw.queues >= IEEE80211_NUM_ACS)
1086 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1087
1088 /* auth flags will be set later for TDLS,
1089 * and for unassociated stations that move to assocaited */
1090 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1091 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1092 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1093 ret = sta_apply_auth_flags(local, sta, mask, set);
1094 if (ret)
1095 return ret;
1096 }
1097
1098 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1099 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1100 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1101 else
1102 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1103 }
1104
1105 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1106 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1107 if (set & BIT(NL80211_STA_FLAG_MFP))
1108 set_sta_flag(sta, WLAN_STA_MFP);
1109 else
1110 clear_sta_flag(sta, WLAN_STA_MFP);
1111 }
1112
1113 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1114 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1115 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1116 else
1117 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1118 }
1119
1120 /* mark TDLS channel switch support, if the AP allows it */
1121 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1122 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1123 params->ext_capab_len >= 4 &&
1124 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1125 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1126
1127 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1128 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1129 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1130 params->ext_capab_len >= 8 &&
1131 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1132 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1133
1134 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1135 sta->sta.uapsd_queues = params->uapsd_queues;
1136 sta->sta.max_sp = params->max_sp;
1137 }
1138
1139 /* The sender might not have sent the last bit, consider it to be 0 */
1140 if (params->ext_capab_len >= 8) {
1141 u8 val = (params->ext_capab[7] &
1142 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1143
1144 /* we did get all the bits, take the MSB as well */
1145 if (params->ext_capab_len >= 9) {
1146 u8 val_msb = params->ext_capab[8] &
1147 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1148 val_msb <<= 1;
1149 val |= val_msb;
1150 }
1151
1152 switch (val) {
1153 case 1:
1154 sta->sta.max_amsdu_subframes = 32;
1155 break;
1156 case 2:
1157 sta->sta.max_amsdu_subframes = 16;
1158 break;
1159 case 3:
1160 sta->sta.max_amsdu_subframes = 8;
1161 break;
1162 default:
1163 sta->sta.max_amsdu_subframes = 0;
1164 }
1165 }
1166
1167 /*
1168 * cfg80211 validates this (1-2007) and allows setting the AID
1169 * only when creating a new station entry
1170 */
1171 if (params->aid)
1172 sta->sta.aid = params->aid;
1173
1174 /*
1175 * Some of the following updates would be racy if called on an
1176 * existing station, via ieee80211_change_station(). However,
1177 * all such changes are rejected by cfg80211 except for updates
1178 * changing the supported rates on an existing but not yet used
1179 * TDLS peer.
1180 */
1181
1182 if (params->listen_interval >= 0)
1183 sta->listen_interval = params->listen_interval;
1184
1185 if (params->supported_rates) {
1186 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1187 sband, params->supported_rates,
1188 params->supported_rates_len,
1189 &sta->sta.supp_rates[band]);
1190 }
1191
1192 if (params->ht_capa)
1193 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1194 params->ht_capa, sta);
1195
1196 /* VHT can override some HT caps such as the A-MSDU max length */
1197 if (params->vht_capa)
1198 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1199 params->vht_capa, sta);
1200
1201 if (params->opmode_notif_used) {
1202 /* returned value is only needed for rc update, but the
1203 * rc isn't initialized here yet, so ignore it
1204 */
1205 __ieee80211_vht_handle_opmode(sdata, sta,
1206 params->opmode_notif, band);
1207 }
1208
1209 if (params->support_p2p_ps >= 0)
1210 sta->sta.support_p2p_ps = params->support_p2p_ps;
1211
1212 if (ieee80211_vif_is_mesh(&sdata->vif))
1213 sta_apply_mesh_params(local, sta, params);
1214
1215 /* set the STA state after all sta info from usermode has been set */
1216 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1217 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1218 ret = sta_apply_auth_flags(local, sta, mask, set);
1219 if (ret)
1220 return ret;
1221 }
1222
1223 return 0;
1224 }
1225
1226 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1227 const u8 *mac,
1228 struct station_parameters *params)
1229 {
1230 struct ieee80211_local *local = wiphy_priv(wiphy);
1231 struct sta_info *sta;
1232 struct ieee80211_sub_if_data *sdata;
1233 int err;
1234 int layer2_update;
1235
1236 if (params->vlan) {
1237 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1238
1239 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1240 sdata->vif.type != NL80211_IFTYPE_AP)
1241 return -EINVAL;
1242 } else
1243 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1244
1245 if (ether_addr_equal(mac, sdata->vif.addr))
1246 return -EINVAL;
1247
1248 if (is_multicast_ether_addr(mac))
1249 return -EINVAL;
1250
1251 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1252 if (!sta)
1253 return -ENOMEM;
1254
1255 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1256 sta->sta.tdls = true;
1257
1258 err = sta_apply_parameters(local, sta, params);
1259 if (err) {
1260 sta_info_free(local, sta);
1261 return err;
1262 }
1263
1264 /*
1265 * for TDLS and for unassociated station, rate control should be
1266 * initialized only when rates are known and station is marked
1267 * authorized/associated
1268 */
1269 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1270 test_sta_flag(sta, WLAN_STA_ASSOC))
1271 rate_control_rate_init(sta);
1272
1273 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1274 sdata->vif.type == NL80211_IFTYPE_AP;
1275
1276 err = sta_info_insert_rcu(sta);
1277 if (err) {
1278 rcu_read_unlock();
1279 return err;
1280 }
1281
1282 if (layer2_update)
1283 ieee80211_send_layer2_update(sta);
1284
1285 rcu_read_unlock();
1286
1287 return 0;
1288 }
1289
1290 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1291 struct station_del_parameters *params)
1292 {
1293 struct ieee80211_sub_if_data *sdata;
1294
1295 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1296
1297 if (params->mac)
1298 return sta_info_destroy_addr_bss(sdata, params->mac);
1299
1300 sta_info_flush(sdata);
1301 return 0;
1302 }
1303
1304 static int ieee80211_change_station(struct wiphy *wiphy,
1305 struct net_device *dev, const u8 *mac,
1306 struct station_parameters *params)
1307 {
1308 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1309 struct ieee80211_local *local = wiphy_priv(wiphy);
1310 struct sta_info *sta;
1311 struct ieee80211_sub_if_data *vlansdata;
1312 enum cfg80211_station_type statype;
1313 int err;
1314
1315 mutex_lock(&local->sta_mtx);
1316
1317 sta = sta_info_get_bss(sdata, mac);
1318 if (!sta) {
1319 err = -ENOENT;
1320 goto out_err;
1321 }
1322
1323 switch (sdata->vif.type) {
1324 case NL80211_IFTYPE_MESH_POINT:
1325 if (sdata->u.mesh.user_mpm)
1326 statype = CFG80211_STA_MESH_PEER_USER;
1327 else
1328 statype = CFG80211_STA_MESH_PEER_KERNEL;
1329 break;
1330 case NL80211_IFTYPE_ADHOC:
1331 statype = CFG80211_STA_IBSS;
1332 break;
1333 case NL80211_IFTYPE_STATION:
1334 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1335 statype = CFG80211_STA_AP_STA;
1336 break;
1337 }
1338 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1339 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1340 else
1341 statype = CFG80211_STA_TDLS_PEER_SETUP;
1342 break;
1343 case NL80211_IFTYPE_AP:
1344 case NL80211_IFTYPE_AP_VLAN:
1345 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1346 statype = CFG80211_STA_AP_CLIENT;
1347 else
1348 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1349 break;
1350 default:
1351 err = -EOPNOTSUPP;
1352 goto out_err;
1353 }
1354
1355 err = cfg80211_check_station_change(wiphy, params, statype);
1356 if (err)
1357 goto out_err;
1358
1359 if (params->vlan && params->vlan != sta->sdata->dev) {
1360 bool prev_4addr = false;
1361 bool new_4addr = false;
1362
1363 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1364
1365 if (params->vlan->ieee80211_ptr->use_4addr) {
1366 if (vlansdata->u.vlan.sta) {
1367 err = -EBUSY;
1368 goto out_err;
1369 }
1370
1371 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1372 new_4addr = true;
1373 __ieee80211_check_fast_rx_iface(vlansdata);
1374 }
1375
1376 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1377 sta->sdata->u.vlan.sta) {
1378 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1379 prev_4addr = true;
1380 }
1381
1382 sta->sdata = vlansdata;
1383 ieee80211_check_fast_xmit(sta);
1384
1385 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1386 prev_4addr != new_4addr) {
1387 if (new_4addr)
1388 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1389 else
1390 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1391 }
1392
1393 ieee80211_send_layer2_update(sta);
1394 }
1395
1396 err = sta_apply_parameters(local, sta, params);
1397 if (err)
1398 goto out_err;
1399
1400 mutex_unlock(&local->sta_mtx);
1401
1402 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1403 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1404 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1405 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1406 sta_info_tx_streams(sta) != 1) {
1407 ht_dbg(sta->sdata,
1408 "%pM just authorized and MIMO capable - update SMPS\n",
1409 sta->sta.addr);
1410 ieee80211_send_smps_action(sta->sdata,
1411 sta->sdata->bss->req_smps,
1412 sta->sta.addr,
1413 sta->sdata->vif.bss_conf.bssid);
1414 }
1415
1416 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1417 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1418 ieee80211_recalc_ps(local);
1419 ieee80211_recalc_ps_vif(sdata);
1420 }
1421
1422 return 0;
1423 out_err:
1424 mutex_unlock(&local->sta_mtx);
1425 return err;
1426 }
1427
1428 #ifdef CONFIG_MAC80211_MESH
1429 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1430 const u8 *dst, const u8 *next_hop)
1431 {
1432 struct ieee80211_sub_if_data *sdata;
1433 struct mesh_path *mpath;
1434 struct sta_info *sta;
1435
1436 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1437
1438 rcu_read_lock();
1439 sta = sta_info_get(sdata, next_hop);
1440 if (!sta) {
1441 rcu_read_unlock();
1442 return -ENOENT;
1443 }
1444
1445 mpath = mesh_path_add(sdata, dst);
1446 if (IS_ERR(mpath)) {
1447 rcu_read_unlock();
1448 return PTR_ERR(mpath);
1449 }
1450
1451 mesh_path_fix_nexthop(mpath, sta);
1452
1453 rcu_read_unlock();
1454 return 0;
1455 }
1456
1457 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1458 const u8 *dst)
1459 {
1460 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1461
1462 if (dst)
1463 return mesh_path_del(sdata, dst);
1464
1465 mesh_path_flush_by_iface(sdata);
1466 return 0;
1467 }
1468
1469 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1470 const u8 *dst, const u8 *next_hop)
1471 {
1472 struct ieee80211_sub_if_data *sdata;
1473 struct mesh_path *mpath;
1474 struct sta_info *sta;
1475
1476 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1477
1478 rcu_read_lock();
1479
1480 sta = sta_info_get(sdata, next_hop);
1481 if (!sta) {
1482 rcu_read_unlock();
1483 return -ENOENT;
1484 }
1485
1486 mpath = mesh_path_lookup(sdata, dst);
1487 if (!mpath) {
1488 rcu_read_unlock();
1489 return -ENOENT;
1490 }
1491
1492 mesh_path_fix_nexthop(mpath, sta);
1493
1494 rcu_read_unlock();
1495 return 0;
1496 }
1497
1498 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1499 struct mpath_info *pinfo)
1500 {
1501 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1502
1503 if (next_hop_sta)
1504 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1505 else
1506 eth_zero_addr(next_hop);
1507
1508 memset(pinfo, 0, sizeof(*pinfo));
1509
1510 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1511
1512 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1513 MPATH_INFO_SN |
1514 MPATH_INFO_METRIC |
1515 MPATH_INFO_EXPTIME |
1516 MPATH_INFO_DISCOVERY_TIMEOUT |
1517 MPATH_INFO_DISCOVERY_RETRIES |
1518 MPATH_INFO_FLAGS;
1519
1520 pinfo->frame_qlen = mpath->frame_queue.qlen;
1521 pinfo->sn = mpath->sn;
1522 pinfo->metric = mpath->metric;
1523 if (time_before(jiffies, mpath->exp_time))
1524 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1525 pinfo->discovery_timeout =
1526 jiffies_to_msecs(mpath->discovery_timeout);
1527 pinfo->discovery_retries = mpath->discovery_retries;
1528 if (mpath->flags & MESH_PATH_ACTIVE)
1529 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1530 if (mpath->flags & MESH_PATH_RESOLVING)
1531 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1532 if (mpath->flags & MESH_PATH_SN_VALID)
1533 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1534 if (mpath->flags & MESH_PATH_FIXED)
1535 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1536 if (mpath->flags & MESH_PATH_RESOLVED)
1537 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1538 }
1539
1540 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1541 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1542
1543 {
1544 struct ieee80211_sub_if_data *sdata;
1545 struct mesh_path *mpath;
1546
1547 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548
1549 rcu_read_lock();
1550 mpath = mesh_path_lookup(sdata, dst);
1551 if (!mpath) {
1552 rcu_read_unlock();
1553 return -ENOENT;
1554 }
1555 memcpy(dst, mpath->dst, ETH_ALEN);
1556 mpath_set_pinfo(mpath, next_hop, pinfo);
1557 rcu_read_unlock();
1558 return 0;
1559 }
1560
1561 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1562 int idx, u8 *dst, u8 *next_hop,
1563 struct mpath_info *pinfo)
1564 {
1565 struct ieee80211_sub_if_data *sdata;
1566 struct mesh_path *mpath;
1567
1568 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1569
1570 rcu_read_lock();
1571 mpath = mesh_path_lookup_by_idx(sdata, idx);
1572 if (!mpath) {
1573 rcu_read_unlock();
1574 return -ENOENT;
1575 }
1576 memcpy(dst, mpath->dst, ETH_ALEN);
1577 mpath_set_pinfo(mpath, next_hop, pinfo);
1578 rcu_read_unlock();
1579 return 0;
1580 }
1581
1582 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1583 struct mpath_info *pinfo)
1584 {
1585 memset(pinfo, 0, sizeof(*pinfo));
1586 memcpy(mpp, mpath->mpp, ETH_ALEN);
1587
1588 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1589 }
1590
1591 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1592 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1593
1594 {
1595 struct ieee80211_sub_if_data *sdata;
1596 struct mesh_path *mpath;
1597
1598 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1599
1600 rcu_read_lock();
1601 mpath = mpp_path_lookup(sdata, dst);
1602 if (!mpath) {
1603 rcu_read_unlock();
1604 return -ENOENT;
1605 }
1606 memcpy(dst, mpath->dst, ETH_ALEN);
1607 mpp_set_pinfo(mpath, mpp, pinfo);
1608 rcu_read_unlock();
1609 return 0;
1610 }
1611
1612 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1613 int idx, u8 *dst, u8 *mpp,
1614 struct mpath_info *pinfo)
1615 {
1616 struct ieee80211_sub_if_data *sdata;
1617 struct mesh_path *mpath;
1618
1619 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1620
1621 rcu_read_lock();
1622 mpath = mpp_path_lookup_by_idx(sdata, idx);
1623 if (!mpath) {
1624 rcu_read_unlock();
1625 return -ENOENT;
1626 }
1627 memcpy(dst, mpath->dst, ETH_ALEN);
1628 mpp_set_pinfo(mpath, mpp, pinfo);
1629 rcu_read_unlock();
1630 return 0;
1631 }
1632
1633 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1634 struct net_device *dev,
1635 struct mesh_config *conf)
1636 {
1637 struct ieee80211_sub_if_data *sdata;
1638 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1639
1640 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1641 return 0;
1642 }
1643
1644 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1645 {
1646 return (mask >> (parm-1)) & 0x1;
1647 }
1648
1649 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1650 const struct mesh_setup *setup)
1651 {
1652 u8 *new_ie;
1653 const u8 *old_ie;
1654 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1655 struct ieee80211_sub_if_data, u.mesh);
1656
1657 /* allocate information elements */
1658 new_ie = NULL;
1659 old_ie = ifmsh->ie;
1660
1661 if (setup->ie_len) {
1662 new_ie = kmemdup(setup->ie, setup->ie_len,
1663 GFP_KERNEL);
1664 if (!new_ie)
1665 return -ENOMEM;
1666 }
1667 ifmsh->ie_len = setup->ie_len;
1668 ifmsh->ie = new_ie;
1669 kfree(old_ie);
1670
1671 /* now copy the rest of the setup parameters */
1672 ifmsh->mesh_id_len = setup->mesh_id_len;
1673 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1674 ifmsh->mesh_sp_id = setup->sync_method;
1675 ifmsh->mesh_pp_id = setup->path_sel_proto;
1676 ifmsh->mesh_pm_id = setup->path_metric;
1677 ifmsh->user_mpm = setup->user_mpm;
1678 ifmsh->mesh_auth_id = setup->auth_id;
1679 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1680 if (setup->is_authenticated)
1681 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1682 if (setup->is_secure)
1683 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1684
1685 /* mcast rate setting in Mesh Node */
1686 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1687 sizeof(setup->mcast_rate));
1688 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1689
1690 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1691 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1692
1693 return 0;
1694 }
1695
1696 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1697 struct net_device *dev, u32 mask,
1698 const struct mesh_config *nconf)
1699 {
1700 struct mesh_config *conf;
1701 struct ieee80211_sub_if_data *sdata;
1702 struct ieee80211_if_mesh *ifmsh;
1703
1704 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1705 ifmsh = &sdata->u.mesh;
1706
1707 /* Set the config options which we are interested in setting */
1708 conf = &(sdata->u.mesh.mshcfg);
1709 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1710 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1711 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1712 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1713 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1714 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1715 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1716 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1717 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1718 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1719 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1720 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1721 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1722 conf->element_ttl = nconf->element_ttl;
1723 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1724 if (ifmsh->user_mpm)
1725 return -EBUSY;
1726 conf->auto_open_plinks = nconf->auto_open_plinks;
1727 }
1728 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1729 conf->dot11MeshNbrOffsetMaxNeighbor =
1730 nconf->dot11MeshNbrOffsetMaxNeighbor;
1731 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1732 conf->dot11MeshHWMPmaxPREQretries =
1733 nconf->dot11MeshHWMPmaxPREQretries;
1734 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1735 conf->path_refresh_time = nconf->path_refresh_time;
1736 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1737 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1738 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1739 conf->dot11MeshHWMPactivePathTimeout =
1740 nconf->dot11MeshHWMPactivePathTimeout;
1741 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1742 conf->dot11MeshHWMPpreqMinInterval =
1743 nconf->dot11MeshHWMPpreqMinInterval;
1744 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1745 conf->dot11MeshHWMPperrMinInterval =
1746 nconf->dot11MeshHWMPperrMinInterval;
1747 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1748 mask))
1749 conf->dot11MeshHWMPnetDiameterTraversalTime =
1750 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1751 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1752 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1753 ieee80211_mesh_root_setup(ifmsh);
1754 }
1755 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1756 /* our current gate announcement implementation rides on root
1757 * announcements, so require this ifmsh to also be a root node
1758 * */
1759 if (nconf->dot11MeshGateAnnouncementProtocol &&
1760 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1761 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1762 ieee80211_mesh_root_setup(ifmsh);
1763 }
1764 conf->dot11MeshGateAnnouncementProtocol =
1765 nconf->dot11MeshGateAnnouncementProtocol;
1766 }
1767 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1768 conf->dot11MeshHWMPRannInterval =
1769 nconf->dot11MeshHWMPRannInterval;
1770 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1771 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1772 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1773 /* our RSSI threshold implementation is supported only for
1774 * devices that report signal in dBm.
1775 */
1776 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1777 return -ENOTSUPP;
1778 conf->rssi_threshold = nconf->rssi_threshold;
1779 }
1780 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1781 conf->ht_opmode = nconf->ht_opmode;
1782 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1783 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1784 }
1785 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1786 conf->dot11MeshHWMPactivePathToRootTimeout =
1787 nconf->dot11MeshHWMPactivePathToRootTimeout;
1788 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1789 conf->dot11MeshHWMProotInterval =
1790 nconf->dot11MeshHWMProotInterval;
1791 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1792 conf->dot11MeshHWMPconfirmationInterval =
1793 nconf->dot11MeshHWMPconfirmationInterval;
1794 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1795 conf->power_mode = nconf->power_mode;
1796 ieee80211_mps_local_status_update(sdata);
1797 }
1798 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1799 conf->dot11MeshAwakeWindowDuration =
1800 nconf->dot11MeshAwakeWindowDuration;
1801 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1802 conf->plink_timeout = nconf->plink_timeout;
1803 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1804 return 0;
1805 }
1806
1807 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1808 const struct mesh_config *conf,
1809 const struct mesh_setup *setup)
1810 {
1811 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1812 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1813 int err;
1814
1815 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1816 err = copy_mesh_setup(ifmsh, setup);
1817 if (err)
1818 return err;
1819
1820 /* can mesh use other SMPS modes? */
1821 sdata->smps_mode = IEEE80211_SMPS_OFF;
1822 sdata->needed_rx_chains = sdata->local->rx_chains;
1823
1824 mutex_lock(&sdata->local->mtx);
1825 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1826 IEEE80211_CHANCTX_SHARED);
1827 mutex_unlock(&sdata->local->mtx);
1828 if (err)
1829 return err;
1830
1831 return ieee80211_start_mesh(sdata);
1832 }
1833
1834 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1835 {
1836 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1837
1838 ieee80211_stop_mesh(sdata);
1839 mutex_lock(&sdata->local->mtx);
1840 ieee80211_vif_release_channel(sdata);
1841 mutex_unlock(&sdata->local->mtx);
1842
1843 return 0;
1844 }
1845 #endif
1846
1847 static int ieee80211_change_bss(struct wiphy *wiphy,
1848 struct net_device *dev,
1849 struct bss_parameters *params)
1850 {
1851 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1852 enum nl80211_band band;
1853 u32 changed = 0;
1854
1855 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1856 return -ENOENT;
1857
1858 band = ieee80211_get_sdata_band(sdata);
1859
1860 if (params->use_cts_prot >= 0) {
1861 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1862 changed |= BSS_CHANGED_ERP_CTS_PROT;
1863 }
1864 if (params->use_short_preamble >= 0) {
1865 sdata->vif.bss_conf.use_short_preamble =
1866 params->use_short_preamble;
1867 changed |= BSS_CHANGED_ERP_PREAMBLE;
1868 }
1869
1870 if (!sdata->vif.bss_conf.use_short_slot &&
1871 band == NL80211_BAND_5GHZ) {
1872 sdata->vif.bss_conf.use_short_slot = true;
1873 changed |= BSS_CHANGED_ERP_SLOT;
1874 }
1875
1876 if (params->use_short_slot_time >= 0) {
1877 sdata->vif.bss_conf.use_short_slot =
1878 params->use_short_slot_time;
1879 changed |= BSS_CHANGED_ERP_SLOT;
1880 }
1881
1882 if (params->basic_rates) {
1883 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1884 wiphy->bands[band],
1885 params->basic_rates,
1886 params->basic_rates_len,
1887 &sdata->vif.bss_conf.basic_rates);
1888 changed |= BSS_CHANGED_BASIC_RATES;
1889 }
1890
1891 if (params->ap_isolate >= 0) {
1892 if (params->ap_isolate)
1893 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1894 else
1895 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1896 ieee80211_check_fast_rx_iface(sdata);
1897 }
1898
1899 if (params->ht_opmode >= 0) {
1900 sdata->vif.bss_conf.ht_operation_mode =
1901 (u16) params->ht_opmode;
1902 changed |= BSS_CHANGED_HT;
1903 }
1904
1905 if (params->p2p_ctwindow >= 0) {
1906 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1907 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1908 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1909 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1910 changed |= BSS_CHANGED_P2P_PS;
1911 }
1912
1913 if (params->p2p_opp_ps > 0) {
1914 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1915 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1916 changed |= BSS_CHANGED_P2P_PS;
1917 } else if (params->p2p_opp_ps == 0) {
1918 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1919 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1920 changed |= BSS_CHANGED_P2P_PS;
1921 }
1922
1923 ieee80211_bss_info_change_notify(sdata, changed);
1924
1925 return 0;
1926 }
1927
1928 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1929 struct net_device *dev,
1930 struct ieee80211_txq_params *params)
1931 {
1932 struct ieee80211_local *local = wiphy_priv(wiphy);
1933 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1934 struct ieee80211_tx_queue_params p;
1935
1936 if (!local->ops->conf_tx)
1937 return -EOPNOTSUPP;
1938
1939 if (local->hw.queues < IEEE80211_NUM_ACS)
1940 return -EOPNOTSUPP;
1941
1942 memset(&p, 0, sizeof(p));
1943 p.aifs = params->aifs;
1944 p.cw_max = params->cwmax;
1945 p.cw_min = params->cwmin;
1946 p.txop = params->txop;
1947
1948 /*
1949 * Setting tx queue params disables u-apsd because it's only
1950 * called in master mode.
1951 */
1952 p.uapsd = false;
1953
1954 sdata->tx_conf[params->ac] = p;
1955 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1956 wiphy_debug(local->hw.wiphy,
1957 "failed to set TX queue parameters for AC %d\n",
1958 params->ac);
1959 return -EINVAL;
1960 }
1961
1962 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1963
1964 return 0;
1965 }
1966
1967 #ifdef CONFIG_PM
1968 static int ieee80211_suspend(struct wiphy *wiphy,
1969 struct cfg80211_wowlan *wowlan)
1970 {
1971 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1972 }
1973
1974 static int ieee80211_resume(struct wiphy *wiphy)
1975 {
1976 return __ieee80211_resume(wiphy_priv(wiphy));
1977 }
1978 #else
1979 #define ieee80211_suspend NULL
1980 #define ieee80211_resume NULL
1981 #endif
1982
1983 static int ieee80211_scan(struct wiphy *wiphy,
1984 struct cfg80211_scan_request *req)
1985 {
1986 struct ieee80211_sub_if_data *sdata;
1987
1988 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1989
1990 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1991 case NL80211_IFTYPE_STATION:
1992 case NL80211_IFTYPE_ADHOC:
1993 case NL80211_IFTYPE_MESH_POINT:
1994 case NL80211_IFTYPE_P2P_CLIENT:
1995 case NL80211_IFTYPE_P2P_DEVICE:
1996 break;
1997 case NL80211_IFTYPE_P2P_GO:
1998 if (sdata->local->ops->hw_scan)
1999 break;
2000 /*
2001 * FIXME: implement NoA while scanning in software,
2002 * for now fall through to allow scanning only when
2003 * beaconing hasn't been configured yet
2004 */
2005 case NL80211_IFTYPE_AP:
2006 /*
2007 * If the scan has been forced (and the driver supports
2008 * forcing), don't care about being beaconing already.
2009 * This will create problems to the attached stations (e.g. all
2010 * the frames sent while scanning on other channel will be
2011 * lost)
2012 */
2013 if (sdata->u.ap.beacon &&
2014 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2015 !(req->flags & NL80211_SCAN_FLAG_AP)))
2016 return -EOPNOTSUPP;
2017 break;
2018 default:
2019 return -EOPNOTSUPP;
2020 }
2021
2022 return ieee80211_request_scan(sdata, req);
2023 }
2024
2025 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2026 {
2027 ieee80211_scan_cancel(wiphy_priv(wiphy));
2028 }
2029
2030 static int
2031 ieee80211_sched_scan_start(struct wiphy *wiphy,
2032 struct net_device *dev,
2033 struct cfg80211_sched_scan_request *req)
2034 {
2035 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2036
2037 if (!sdata->local->ops->sched_scan_start)
2038 return -EOPNOTSUPP;
2039
2040 return ieee80211_request_sched_scan_start(sdata, req);
2041 }
2042
2043 static int
2044 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2045 {
2046 struct ieee80211_local *local = wiphy_priv(wiphy);
2047
2048 if (!local->ops->sched_scan_stop)
2049 return -EOPNOTSUPP;
2050
2051 return ieee80211_request_sched_scan_stop(local);
2052 }
2053
2054 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2055 struct cfg80211_auth_request *req)
2056 {
2057 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2058 }
2059
2060 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2061 struct cfg80211_assoc_request *req)
2062 {
2063 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2064 }
2065
2066 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2067 struct cfg80211_deauth_request *req)
2068 {
2069 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2070 }
2071
2072 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2073 struct cfg80211_disassoc_request *req)
2074 {
2075 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2076 }
2077
2078 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2079 struct cfg80211_ibss_params *params)
2080 {
2081 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2082 }
2083
2084 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2085 {
2086 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2087 }
2088
2089 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2090 struct ocb_setup *setup)
2091 {
2092 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2093 }
2094
2095 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2096 {
2097 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2098 }
2099
2100 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2101 int rate[NUM_NL80211_BANDS])
2102 {
2103 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2104
2105 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2106 sizeof(int) * NUM_NL80211_BANDS);
2107
2108 return 0;
2109 }
2110
2111 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2112 {
2113 struct ieee80211_local *local = wiphy_priv(wiphy);
2114 int err;
2115
2116 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2117 ieee80211_check_fast_xmit_all(local);
2118
2119 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2120
2121 if (err) {
2122 ieee80211_check_fast_xmit_all(local);
2123 return err;
2124 }
2125 }
2126
2127 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2128 (changed & WIPHY_PARAM_DYN_ACK)) {
2129 s16 coverage_class;
2130
2131 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2132 wiphy->coverage_class : -1;
2133 err = drv_set_coverage_class(local, coverage_class);
2134
2135 if (err)
2136 return err;
2137 }
2138
2139 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2140 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2141
2142 if (err)
2143 return err;
2144 }
2145
2146 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2147 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2148 return -EINVAL;
2149 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2150 }
2151 if (changed & WIPHY_PARAM_RETRY_LONG) {
2152 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2153 return -EINVAL;
2154 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2155 }
2156 if (changed &
2157 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2158 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2159
2160 return 0;
2161 }
2162
2163 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2164 struct wireless_dev *wdev,
2165 enum nl80211_tx_power_setting type, int mbm)
2166 {
2167 struct ieee80211_local *local = wiphy_priv(wiphy);
2168 struct ieee80211_sub_if_data *sdata;
2169 enum nl80211_tx_power_setting txp_type = type;
2170 bool update_txp_type = false;
2171
2172 if (wdev) {
2173 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2174
2175 switch (type) {
2176 case NL80211_TX_POWER_AUTOMATIC:
2177 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2178 txp_type = NL80211_TX_POWER_LIMITED;
2179 break;
2180 case NL80211_TX_POWER_LIMITED:
2181 case NL80211_TX_POWER_FIXED:
2182 if (mbm < 0 || (mbm % 100))
2183 return -EOPNOTSUPP;
2184 sdata->user_power_level = MBM_TO_DBM(mbm);
2185 break;
2186 }
2187
2188 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2189 update_txp_type = true;
2190 sdata->vif.bss_conf.txpower_type = txp_type;
2191 }
2192
2193 ieee80211_recalc_txpower(sdata, update_txp_type);
2194
2195 return 0;
2196 }
2197
2198 switch (type) {
2199 case NL80211_TX_POWER_AUTOMATIC:
2200 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2201 txp_type = NL80211_TX_POWER_LIMITED;
2202 break;
2203 case NL80211_TX_POWER_LIMITED:
2204 case NL80211_TX_POWER_FIXED:
2205 if (mbm < 0 || (mbm % 100))
2206 return -EOPNOTSUPP;
2207 local->user_power_level = MBM_TO_DBM(mbm);
2208 break;
2209 }
2210
2211 mutex_lock(&local->iflist_mtx);
2212 list_for_each_entry(sdata, &local->interfaces, list) {
2213 sdata->user_power_level = local->user_power_level;
2214 if (txp_type != sdata->vif.bss_conf.txpower_type)
2215 update_txp_type = true;
2216 sdata->vif.bss_conf.txpower_type = txp_type;
2217 }
2218 list_for_each_entry(sdata, &local->interfaces, list)
2219 ieee80211_recalc_txpower(sdata, update_txp_type);
2220 mutex_unlock(&local->iflist_mtx);
2221
2222 return 0;
2223 }
2224
2225 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2226 struct wireless_dev *wdev,
2227 int *dbm)
2228 {
2229 struct ieee80211_local *local = wiphy_priv(wiphy);
2230 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2231
2232 if (local->ops->get_txpower)
2233 return drv_get_txpower(local, sdata, dbm);
2234
2235 if (!local->use_chanctx)
2236 *dbm = local->hw.conf.power_level;
2237 else
2238 *dbm = sdata->vif.bss_conf.txpower;
2239
2240 return 0;
2241 }
2242
2243 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2244 const u8 *addr)
2245 {
2246 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2247
2248 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2249
2250 return 0;
2251 }
2252
2253 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2254 {
2255 struct ieee80211_local *local = wiphy_priv(wiphy);
2256
2257 drv_rfkill_poll(local);
2258 }
2259
2260 #ifdef CONFIG_NL80211_TESTMODE
2261 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2262 struct wireless_dev *wdev,
2263 void *data, int len)
2264 {
2265 struct ieee80211_local *local = wiphy_priv(wiphy);
2266 struct ieee80211_vif *vif = NULL;
2267
2268 if (!local->ops->testmode_cmd)
2269 return -EOPNOTSUPP;
2270
2271 if (wdev) {
2272 struct ieee80211_sub_if_data *sdata;
2273
2274 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2275 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2276 vif = &sdata->vif;
2277 }
2278
2279 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2280 }
2281
2282 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2283 struct sk_buff *skb,
2284 struct netlink_callback *cb,
2285 void *data, int len)
2286 {
2287 struct ieee80211_local *local = wiphy_priv(wiphy);
2288
2289 if (!local->ops->testmode_dump)
2290 return -EOPNOTSUPP;
2291
2292 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2293 }
2294 #endif
2295
2296 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2297 enum ieee80211_smps_mode smps_mode)
2298 {
2299 struct sta_info *sta;
2300 enum ieee80211_smps_mode old_req;
2301
2302 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2303 return -EINVAL;
2304
2305 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2306 return 0;
2307
2308 old_req = sdata->u.ap.req_smps;
2309 sdata->u.ap.req_smps = smps_mode;
2310
2311 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2312 if (old_req == smps_mode ||
2313 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2314 return 0;
2315
2316 /* If no associated stations, there's no need to do anything */
2317 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2318 sdata->smps_mode = smps_mode;
2319 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2320 return 0;
2321 }
2322
2323 ht_dbg(sdata,
2324 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2325 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2326
2327 mutex_lock(&sdata->local->sta_mtx);
2328 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2329 /*
2330 * Only stations associated to our AP and
2331 * associated VLANs
2332 */
2333 if (sta->sdata->bss != &sdata->u.ap)
2334 continue;
2335
2336 /* This station doesn't support MIMO - skip it */
2337 if (sta_info_tx_streams(sta) == 1)
2338 continue;
2339
2340 /*
2341 * Don't wake up a STA just to send the action frame
2342 * unless we are getting more restrictive.
2343 */
2344 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2345 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2346 smps_mode)) {
2347 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2348 sta->sta.addr);
2349 continue;
2350 }
2351
2352 /*
2353 * If the STA is not authorized, wait until it gets
2354 * authorized and the action frame will be sent then.
2355 */
2356 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2357 continue;
2358
2359 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2360 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2361 sdata->vif.bss_conf.bssid);
2362 }
2363 mutex_unlock(&sdata->local->sta_mtx);
2364
2365 sdata->smps_mode = smps_mode;
2366 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2367
2368 return 0;
2369 }
2370
2371 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2372 enum ieee80211_smps_mode smps_mode)
2373 {
2374 const u8 *ap;
2375 enum ieee80211_smps_mode old_req;
2376 int err;
2377 struct sta_info *sta;
2378 bool tdls_peer_found = false;
2379
2380 lockdep_assert_held(&sdata->wdev.mtx);
2381
2382 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2383 return -EINVAL;
2384
2385 old_req = sdata->u.mgd.req_smps;
2386 sdata->u.mgd.req_smps = smps_mode;
2387
2388 if (old_req == smps_mode &&
2389 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2390 return 0;
2391
2392 /*
2393 * If not associated, or current association is not an HT
2394 * association, there's no need to do anything, just store
2395 * the new value until we associate.
2396 */
2397 if (!sdata->u.mgd.associated ||
2398 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2399 return 0;
2400
2401 ap = sdata->u.mgd.associated->bssid;
2402
2403 rcu_read_lock();
2404 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2405 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2406 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2407 continue;
2408
2409 tdls_peer_found = true;
2410 break;
2411 }
2412 rcu_read_unlock();
2413
2414 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2415 if (tdls_peer_found || !sdata->u.mgd.powersave)
2416 smps_mode = IEEE80211_SMPS_OFF;
2417 else
2418 smps_mode = IEEE80211_SMPS_DYNAMIC;
2419 }
2420
2421 /* send SM PS frame to AP */
2422 err = ieee80211_send_smps_action(sdata, smps_mode,
2423 ap, ap);
2424 if (err)
2425 sdata->u.mgd.req_smps = old_req;
2426 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2427 ieee80211_teardown_tdls_peers(sdata);
2428
2429 return err;
2430 }
2431
2432 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2433 bool enabled, int timeout)
2434 {
2435 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2436 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2437
2438 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2439 return -EOPNOTSUPP;
2440
2441 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2442 return -EOPNOTSUPP;
2443
2444 if (enabled == sdata->u.mgd.powersave &&
2445 timeout == local->dynamic_ps_forced_timeout)
2446 return 0;
2447
2448 sdata->u.mgd.powersave = enabled;
2449 local->dynamic_ps_forced_timeout = timeout;
2450
2451 /* no change, but if automatic follow powersave */
2452 sdata_lock(sdata);
2453 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2454 sdata_unlock(sdata);
2455
2456 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2457 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2458
2459 ieee80211_recalc_ps(local);
2460 ieee80211_recalc_ps_vif(sdata);
2461
2462 return 0;
2463 }
2464
2465 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2466 struct net_device *dev,
2467 s32 rssi_thold, u32 rssi_hyst)
2468 {
2469 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2470 struct ieee80211_vif *vif = &sdata->vif;
2471 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2472
2473 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2474 rssi_hyst == bss_conf->cqm_rssi_hyst)
2475 return 0;
2476
2477 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2478 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2479 return -EOPNOTSUPP;
2480
2481 bss_conf->cqm_rssi_thold = rssi_thold;
2482 bss_conf->cqm_rssi_hyst = rssi_hyst;
2483 sdata->u.mgd.last_cqm_event_signal = 0;
2484
2485 /* tell the driver upon association, unless already associated */
2486 if (sdata->u.mgd.associated &&
2487 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2488 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2489
2490 return 0;
2491 }
2492
2493 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2494 struct net_device *dev,
2495 const u8 *addr,
2496 const struct cfg80211_bitrate_mask *mask)
2497 {
2498 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2499 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2500 int i, ret;
2501
2502 if (!ieee80211_sdata_running(sdata))
2503 return -ENETDOWN;
2504
2505 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2506 ret = drv_set_bitrate_mask(local, sdata, mask);
2507 if (ret)
2508 return ret;
2509 }
2510
2511 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2512 struct ieee80211_supported_band *sband = wiphy->bands[i];
2513 int j;
2514
2515 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2516 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2517 sizeof(mask->control[i].ht_mcs));
2518 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2519 mask->control[i].vht_mcs,
2520 sizeof(mask->control[i].vht_mcs));
2521
2522 sdata->rc_has_mcs_mask[i] = false;
2523 sdata->rc_has_vht_mcs_mask[i] = false;
2524 if (!sband)
2525 continue;
2526
2527 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2528 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2529 sdata->rc_has_mcs_mask[i] = true;
2530 break;
2531 }
2532 }
2533
2534 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2535 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2536 sdata->rc_has_vht_mcs_mask[i] = true;
2537 break;
2538 }
2539 }
2540 }
2541
2542 return 0;
2543 }
2544
2545 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2546 struct net_device *dev,
2547 struct cfg80211_chan_def *chandef,
2548 u32 cac_time_ms)
2549 {
2550 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2551 struct ieee80211_local *local = sdata->local;
2552 int err;
2553
2554 mutex_lock(&local->mtx);
2555 if (!list_empty(&local->roc_list) || local->scanning) {
2556 err = -EBUSY;
2557 goto out_unlock;
2558 }
2559
2560 /* whatever, but channel contexts should not complain about that one */
2561 sdata->smps_mode = IEEE80211_SMPS_OFF;
2562 sdata->needed_rx_chains = local->rx_chains;
2563
2564 err = ieee80211_vif_use_channel(sdata, chandef,
2565 IEEE80211_CHANCTX_SHARED);
2566 if (err)
2567 goto out_unlock;
2568
2569 ieee80211_queue_delayed_work(&sdata->local->hw,
2570 &sdata->dfs_cac_timer_work,
2571 msecs_to_jiffies(cac_time_ms));
2572
2573 out_unlock:
2574 mutex_unlock(&local->mtx);
2575 return err;
2576 }
2577
2578 static struct cfg80211_beacon_data *
2579 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2580 {
2581 struct cfg80211_beacon_data *new_beacon;
2582 u8 *pos;
2583 int len;
2584
2585 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2586 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2587 beacon->probe_resp_len;
2588
2589 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2590 if (!new_beacon)
2591 return NULL;
2592
2593 pos = (u8 *)(new_beacon + 1);
2594 if (beacon->head_len) {
2595 new_beacon->head_len = beacon->head_len;
2596 new_beacon->head = pos;
2597 memcpy(pos, beacon->head, beacon->head_len);
2598 pos += beacon->head_len;
2599 }
2600 if (beacon->tail_len) {
2601 new_beacon->tail_len = beacon->tail_len;
2602 new_beacon->tail = pos;
2603 memcpy(pos, beacon->tail, beacon->tail_len);
2604 pos += beacon->tail_len;
2605 }
2606 if (beacon->beacon_ies_len) {
2607 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2608 new_beacon->beacon_ies = pos;
2609 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2610 pos += beacon->beacon_ies_len;
2611 }
2612 if (beacon->proberesp_ies_len) {
2613 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2614 new_beacon->proberesp_ies = pos;
2615 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2616 pos += beacon->proberesp_ies_len;
2617 }
2618 if (beacon->assocresp_ies_len) {
2619 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2620 new_beacon->assocresp_ies = pos;
2621 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2622 pos += beacon->assocresp_ies_len;
2623 }
2624 if (beacon->probe_resp_len) {
2625 new_beacon->probe_resp_len = beacon->probe_resp_len;
2626 beacon->probe_resp = pos;
2627 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2628 pos += beacon->probe_resp_len;
2629 }
2630
2631 return new_beacon;
2632 }
2633
2634 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2635 {
2636 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2637
2638 ieee80211_queue_work(&sdata->local->hw,
2639 &sdata->csa_finalize_work);
2640 }
2641 EXPORT_SYMBOL(ieee80211_csa_finish);
2642
2643 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2644 u32 *changed)
2645 {
2646 int err;
2647
2648 switch (sdata->vif.type) {
2649 case NL80211_IFTYPE_AP:
2650 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2651 NULL);
2652 kfree(sdata->u.ap.next_beacon);
2653 sdata->u.ap.next_beacon = NULL;
2654
2655 if (err < 0)
2656 return err;
2657 *changed |= err;
2658 break;
2659 case NL80211_IFTYPE_ADHOC:
2660 err = ieee80211_ibss_finish_csa(sdata);
2661 if (err < 0)
2662 return err;
2663 *changed |= err;
2664 break;
2665 #ifdef CONFIG_MAC80211_MESH
2666 case NL80211_IFTYPE_MESH_POINT:
2667 err = ieee80211_mesh_finish_csa(sdata);
2668 if (err < 0)
2669 return err;
2670 *changed |= err;
2671 break;
2672 #endif
2673 default:
2674 WARN_ON(1);
2675 return -EINVAL;
2676 }
2677
2678 return 0;
2679 }
2680
2681 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2682 {
2683 struct ieee80211_local *local = sdata->local;
2684 u32 changed = 0;
2685 int err;
2686
2687 sdata_assert_lock(sdata);
2688 lockdep_assert_held(&local->mtx);
2689 lockdep_assert_held(&local->chanctx_mtx);
2690
2691 /*
2692 * using reservation isn't immediate as it may be deferred until later
2693 * with multi-vif. once reservation is complete it will re-schedule the
2694 * work with no reserved_chanctx so verify chandef to check if it
2695 * completed successfully
2696 */
2697
2698 if (sdata->reserved_chanctx) {
2699 /*
2700 * with multi-vif csa driver may call ieee80211_csa_finish()
2701 * many times while waiting for other interfaces to use their
2702 * reservations
2703 */
2704 if (sdata->reserved_ready)
2705 return 0;
2706
2707 return ieee80211_vif_use_reserved_context(sdata);
2708 }
2709
2710 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2711 &sdata->csa_chandef))
2712 return -EINVAL;
2713
2714 sdata->vif.csa_active = false;
2715
2716 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2717 if (err)
2718 return err;
2719
2720 ieee80211_bss_info_change_notify(sdata, changed);
2721
2722 if (sdata->csa_block_tx) {
2723 ieee80211_wake_vif_queues(local, sdata,
2724 IEEE80211_QUEUE_STOP_REASON_CSA);
2725 sdata->csa_block_tx = false;
2726 }
2727
2728 err = drv_post_channel_switch(sdata);
2729 if (err)
2730 return err;
2731
2732 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2733
2734 return 0;
2735 }
2736
2737 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2738 {
2739 if (__ieee80211_csa_finalize(sdata)) {
2740 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2741 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2742 GFP_KERNEL);
2743 }
2744 }
2745
2746 void ieee80211_csa_finalize_work(struct work_struct *work)
2747 {
2748 struct ieee80211_sub_if_data *sdata =
2749 container_of(work, struct ieee80211_sub_if_data,
2750 csa_finalize_work);
2751 struct ieee80211_local *local = sdata->local;
2752
2753 sdata_lock(sdata);
2754 mutex_lock(&local->mtx);
2755 mutex_lock(&local->chanctx_mtx);
2756
2757 /* AP might have been stopped while waiting for the lock. */
2758 if (!sdata->vif.csa_active)
2759 goto unlock;
2760
2761 if (!ieee80211_sdata_running(sdata))
2762 goto unlock;
2763
2764 ieee80211_csa_finalize(sdata);
2765
2766 unlock:
2767 mutex_unlock(&local->chanctx_mtx);
2768 mutex_unlock(&local->mtx);
2769 sdata_unlock(sdata);
2770 }
2771
2772 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2773 struct cfg80211_csa_settings *params,
2774 u32 *changed)
2775 {
2776 struct ieee80211_csa_settings csa = {};
2777 int err;
2778
2779 switch (sdata->vif.type) {
2780 case NL80211_IFTYPE_AP:
2781 sdata->u.ap.next_beacon =
2782 cfg80211_beacon_dup(&params->beacon_after);
2783 if (!sdata->u.ap.next_beacon)
2784 return -ENOMEM;
2785
2786 /*
2787 * With a count of 0, we don't have to wait for any
2788 * TBTT before switching, so complete the CSA
2789 * immediately. In theory, with a count == 1 we
2790 * should delay the switch until just before the next
2791 * TBTT, but that would complicate things so we switch
2792 * immediately too. If we would delay the switch
2793 * until the next TBTT, we would have to set the probe
2794 * response here.
2795 *
2796 * TODO: A channel switch with count <= 1 without
2797 * sending a CSA action frame is kind of useless,
2798 * because the clients won't know we're changing
2799 * channels. The action frame must be implemented
2800 * either here or in the userspace.
2801 */
2802 if (params->count <= 1)
2803 break;
2804
2805 if ((params->n_counter_offsets_beacon >
2806 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
2807 (params->n_counter_offsets_presp >
2808 IEEE80211_MAX_CSA_COUNTERS_NUM))
2809 return -EINVAL;
2810
2811 csa.counter_offsets_beacon = params->counter_offsets_beacon;
2812 csa.counter_offsets_presp = params->counter_offsets_presp;
2813 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
2814 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
2815 csa.count = params->count;
2816
2817 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
2818 if (err < 0) {
2819 kfree(sdata->u.ap.next_beacon);
2820 return err;
2821 }
2822 *changed |= err;
2823
2824 break;
2825 case NL80211_IFTYPE_ADHOC:
2826 if (!sdata->vif.bss_conf.ibss_joined)
2827 return -EINVAL;
2828
2829 if (params->chandef.width != sdata->u.ibss.chandef.width)
2830 return -EINVAL;
2831
2832 switch (params->chandef.width) {
2833 case NL80211_CHAN_WIDTH_40:
2834 if (cfg80211_get_chandef_type(&params->chandef) !=
2835 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
2836 return -EINVAL;
2837 case NL80211_CHAN_WIDTH_5:
2838 case NL80211_CHAN_WIDTH_10:
2839 case NL80211_CHAN_WIDTH_20_NOHT:
2840 case NL80211_CHAN_WIDTH_20:
2841 break;
2842 default:
2843 return -EINVAL;
2844 }
2845
2846 /* changes into another band are not supported */
2847 if (sdata->u.ibss.chandef.chan->band !=
2848 params->chandef.chan->band)
2849 return -EINVAL;
2850
2851 /* see comments in the NL80211_IFTYPE_AP block */
2852 if (params->count > 1) {
2853 err = ieee80211_ibss_csa_beacon(sdata, params);
2854 if (err < 0)
2855 return err;
2856 *changed |= err;
2857 }
2858
2859 ieee80211_send_action_csa(sdata, params);
2860
2861 break;
2862 #ifdef CONFIG_MAC80211_MESH
2863 case NL80211_IFTYPE_MESH_POINT: {
2864 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2865
2866 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
2867 return -EINVAL;
2868
2869 /* changes into another band are not supported */
2870 if (sdata->vif.bss_conf.chandef.chan->band !=
2871 params->chandef.chan->band)
2872 return -EINVAL;
2873
2874 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
2875 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
2876 if (!ifmsh->pre_value)
2877 ifmsh->pre_value = 1;
2878 else
2879 ifmsh->pre_value++;
2880 }
2881
2882 /* see comments in the NL80211_IFTYPE_AP block */
2883 if (params->count > 1) {
2884 err = ieee80211_mesh_csa_beacon(sdata, params);
2885 if (err < 0) {
2886 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
2887 return err;
2888 }
2889 *changed |= err;
2890 }
2891
2892 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
2893 ieee80211_send_action_csa(sdata, params);
2894
2895 break;
2896 }
2897 #endif
2898 default:
2899 return -EOPNOTSUPP;
2900 }
2901
2902 return 0;
2903 }
2904
2905 static int
2906 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2907 struct cfg80211_csa_settings *params)
2908 {
2909 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2910 struct ieee80211_local *local = sdata->local;
2911 struct ieee80211_channel_switch ch_switch;
2912 struct ieee80211_chanctx_conf *conf;
2913 struct ieee80211_chanctx *chanctx;
2914 u32 changed = 0;
2915 int err;
2916
2917 sdata_assert_lock(sdata);
2918 lockdep_assert_held(&local->mtx);
2919
2920 if (!list_empty(&local->roc_list) || local->scanning)
2921 return -EBUSY;
2922
2923 if (sdata->wdev.cac_started)
2924 return -EBUSY;
2925
2926 if (cfg80211_chandef_identical(&params->chandef,
2927 &sdata->vif.bss_conf.chandef))
2928 return -EINVAL;
2929
2930 /* don't allow another channel switch if one is already active. */
2931 if (sdata->vif.csa_active)
2932 return -EBUSY;
2933
2934 mutex_lock(&local->chanctx_mtx);
2935 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2936 lockdep_is_held(&local->chanctx_mtx));
2937 if (!conf) {
2938 err = -EBUSY;
2939 goto out;
2940 }
2941
2942 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
2943 if (!chanctx) {
2944 err = -EBUSY;
2945 goto out;
2946 }
2947
2948 ch_switch.timestamp = 0;
2949 ch_switch.device_timestamp = 0;
2950 ch_switch.block_tx = params->block_tx;
2951 ch_switch.chandef = params->chandef;
2952 ch_switch.count = params->count;
2953
2954 err = drv_pre_channel_switch(sdata, &ch_switch);
2955 if (err)
2956 goto out;
2957
2958 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
2959 chanctx->mode,
2960 params->radar_required);
2961 if (err)
2962 goto out;
2963
2964 /* if reservation is invalid then this will fail */
2965 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
2966 if (err) {
2967 ieee80211_vif_unreserve_chanctx(sdata);
2968 goto out;
2969 }
2970
2971 err = ieee80211_set_csa_beacon(sdata, params, &changed);
2972 if (err) {
2973 ieee80211_vif_unreserve_chanctx(sdata);
2974 goto out;
2975 }
2976
2977 sdata->csa_chandef = params->chandef;
2978 sdata->csa_block_tx = params->block_tx;
2979 sdata->vif.csa_active = true;
2980
2981 if (sdata->csa_block_tx)
2982 ieee80211_stop_vif_queues(local, sdata,
2983 IEEE80211_QUEUE_STOP_REASON_CSA);
2984
2985 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
2986 params->count);
2987
2988 if (changed) {
2989 ieee80211_bss_info_change_notify(sdata, changed);
2990 drv_channel_switch_beacon(sdata, &params->chandef);
2991 } else {
2992 /* if the beacon didn't change, we can finalize immediately */
2993 ieee80211_csa_finalize(sdata);
2994 }
2995
2996 out:
2997 mutex_unlock(&local->chanctx_mtx);
2998 return err;
2999 }
3000
3001 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3002 struct cfg80211_csa_settings *params)
3003 {
3004 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3005 struct ieee80211_local *local = sdata->local;
3006 int err;
3007
3008 mutex_lock(&local->mtx);
3009 err = __ieee80211_channel_switch(wiphy, dev, params);
3010 mutex_unlock(&local->mtx);
3011
3012 return err;
3013 }
3014
3015 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3016 {
3017 lockdep_assert_held(&local->mtx);
3018
3019 local->roc_cookie_counter++;
3020
3021 /* wow, you wrapped 64 bits ... more likely a bug */
3022 if (WARN_ON(local->roc_cookie_counter == 0))
3023 local->roc_cookie_counter++;
3024
3025 return local->roc_cookie_counter;
3026 }
3027
3028 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3029 u64 *cookie, gfp_t gfp)
3030 {
3031 unsigned long spin_flags;
3032 struct sk_buff *ack_skb;
3033 int id;
3034
3035 ack_skb = skb_copy(skb, gfp);
3036 if (!ack_skb)
3037 return -ENOMEM;
3038
3039 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3040 id = idr_alloc(&local->ack_status_frames, ack_skb,
3041 1, 0x10000, GFP_ATOMIC);
3042 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3043
3044 if (id < 0) {
3045 kfree_skb(ack_skb);
3046 return -ENOMEM;
3047 }
3048
3049 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3050
3051 *cookie = ieee80211_mgmt_tx_cookie(local);
3052 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3053
3054 return 0;
3055 }
3056
3057 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3058 struct wireless_dev *wdev,
3059 u16 frame_type, bool reg)
3060 {
3061 struct ieee80211_local *local = wiphy_priv(wiphy);
3062 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3063
3064 switch (frame_type) {
3065 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3066 if (reg) {
3067 local->probe_req_reg++;
3068 sdata->vif.probe_req_reg++;
3069 } else {
3070 if (local->probe_req_reg)
3071 local->probe_req_reg--;
3072
3073 if (sdata->vif.probe_req_reg)
3074 sdata->vif.probe_req_reg--;
3075 }
3076
3077 if (!local->open_count)
3078 break;
3079
3080 if (sdata->vif.probe_req_reg == 1)
3081 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3082 FIF_PROBE_REQ);
3083 else if (sdata->vif.probe_req_reg == 0)
3084 drv_config_iface_filter(local, sdata, 0,
3085 FIF_PROBE_REQ);
3086
3087 ieee80211_configure_filter(local);
3088 break;
3089 default:
3090 break;
3091 }
3092 }
3093
3094 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3095 {
3096 struct ieee80211_local *local = wiphy_priv(wiphy);
3097
3098 if (local->started)
3099 return -EOPNOTSUPP;
3100
3101 return drv_set_antenna(local, tx_ant, rx_ant);
3102 }
3103
3104 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3105 {
3106 struct ieee80211_local *local = wiphy_priv(wiphy);
3107
3108 return drv_get_antenna(local, tx_ant, rx_ant);
3109 }
3110
3111 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3112 struct net_device *dev,
3113 struct cfg80211_gtk_rekey_data *data)
3114 {
3115 struct ieee80211_local *local = wiphy_priv(wiphy);
3116 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3117
3118 if (!local->ops->set_rekey_data)
3119 return -EOPNOTSUPP;
3120
3121 drv_set_rekey_data(local, sdata, data);
3122
3123 return 0;
3124 }
3125
3126 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3127 const u8 *peer, u64 *cookie)
3128 {
3129 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3130 struct ieee80211_local *local = sdata->local;
3131 struct ieee80211_qos_hdr *nullfunc;
3132 struct sk_buff *skb;
3133 int size = sizeof(*nullfunc);
3134 __le16 fc;
3135 bool qos;
3136 struct ieee80211_tx_info *info;
3137 struct sta_info *sta;
3138 struct ieee80211_chanctx_conf *chanctx_conf;
3139 enum nl80211_band band;
3140 int ret;
3141
3142 /* the lock is needed to assign the cookie later */
3143 mutex_lock(&local->mtx);
3144
3145 rcu_read_lock();
3146 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3147 if (WARN_ON(!chanctx_conf)) {
3148 ret = -EINVAL;
3149 goto unlock;
3150 }
3151 band = chanctx_conf->def.chan->band;
3152 sta = sta_info_get_bss(sdata, peer);
3153 if (sta) {
3154 qos = sta->sta.wme;
3155 } else {
3156 ret = -ENOLINK;
3157 goto unlock;
3158 }
3159
3160 if (qos) {
3161 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3162 IEEE80211_STYPE_QOS_NULLFUNC |
3163 IEEE80211_FCTL_FROMDS);
3164 } else {
3165 size -= 2;
3166 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3167 IEEE80211_STYPE_NULLFUNC |
3168 IEEE80211_FCTL_FROMDS);
3169 }
3170
3171 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3172 if (!skb) {
3173 ret = -ENOMEM;
3174 goto unlock;
3175 }
3176
3177 skb->dev = dev;
3178
3179 skb_reserve(skb, local->hw.extra_tx_headroom);
3180
3181 nullfunc = (void *) skb_put(skb, size);
3182 nullfunc->frame_control = fc;
3183 nullfunc->duration_id = 0;
3184 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3185 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3186 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3187 nullfunc->seq_ctrl = 0;
3188
3189 info = IEEE80211_SKB_CB(skb);
3190
3191 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3192 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3193 info->band = band;
3194
3195 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3196 skb->priority = 7;
3197 if (qos)
3198 nullfunc->qos_ctrl = cpu_to_le16(7);
3199
3200 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3201 if (ret) {
3202 kfree_skb(skb);
3203 goto unlock;
3204 }
3205
3206 local_bh_disable();
3207 ieee80211_xmit(sdata, sta, skb);
3208 local_bh_enable();
3209
3210 ret = 0;
3211 unlock:
3212 rcu_read_unlock();
3213 mutex_unlock(&local->mtx);
3214
3215 return ret;
3216 }
3217
3218 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3219 struct wireless_dev *wdev,
3220 struct cfg80211_chan_def *chandef)
3221 {
3222 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3223 struct ieee80211_local *local = wiphy_priv(wiphy);
3224 struct ieee80211_chanctx_conf *chanctx_conf;
3225 int ret = -ENODATA;
3226
3227 rcu_read_lock();
3228 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3229 if (chanctx_conf) {
3230 *chandef = sdata->vif.bss_conf.chandef;
3231 ret = 0;
3232 } else if (local->open_count > 0 &&
3233 local->open_count == local->monitors &&
3234 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3235 if (local->use_chanctx)
3236 *chandef = local->monitor_chandef;
3237 else
3238 *chandef = local->_oper_chandef;
3239 ret = 0;
3240 }
3241 rcu_read_unlock();
3242
3243 return ret;
3244 }
3245
3246 #ifdef CONFIG_PM
3247 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3248 {
3249 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3250 }
3251 #endif
3252
3253 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3254 struct net_device *dev,
3255 struct cfg80211_qos_map *qos_map)
3256 {
3257 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3258 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3259
3260 if (qos_map) {
3261 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3262 if (!new_qos_map)
3263 return -ENOMEM;
3264 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3265 } else {
3266 /* A NULL qos_map was passed to disable QoS mapping */
3267 new_qos_map = NULL;
3268 }
3269
3270 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3271 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3272 if (old_qos_map)
3273 kfree_rcu(old_qos_map, rcu_head);
3274
3275 return 0;
3276 }
3277
3278 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3279 struct net_device *dev,
3280 struct cfg80211_chan_def *chandef)
3281 {
3282 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3283 int ret;
3284 u32 changed = 0;
3285
3286 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3287 if (ret == 0)
3288 ieee80211_bss_info_change_notify(sdata, changed);
3289
3290 return ret;
3291 }
3292
3293 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3294 u8 tsid, const u8 *peer, u8 up,
3295 u16 admitted_time)
3296 {
3297 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3298 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3299 int ac = ieee802_1d_to_ac[up];
3300
3301 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3302 return -EOPNOTSUPP;
3303
3304 if (!(sdata->wmm_acm & BIT(up)))
3305 return -EINVAL;
3306
3307 if (ifmgd->tx_tspec[ac].admitted_time)
3308 return -EBUSY;
3309
3310 if (admitted_time) {
3311 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3312 ifmgd->tx_tspec[ac].tsid = tsid;
3313 ifmgd->tx_tspec[ac].up = up;
3314 }
3315
3316 return 0;
3317 }
3318
3319 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3320 u8 tsid, const u8 *peer)
3321 {
3322 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3323 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3324 struct ieee80211_local *local = wiphy_priv(wiphy);
3325 int ac;
3326
3327 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3328 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3329
3330 /* skip unused entries */
3331 if (!tx_tspec->admitted_time)
3332 continue;
3333
3334 if (tx_tspec->tsid != tsid)
3335 continue;
3336
3337 /* due to this new packets will be reassigned to non-ACM ACs */
3338 tx_tspec->up = -1;
3339
3340 /* Make sure that all packets have been sent to avoid to
3341 * restore the QoS params on packets that are still on the
3342 * queues.
3343 */
3344 synchronize_net();
3345 ieee80211_flush_queues(local, sdata, false);
3346
3347 /* restore the normal QoS parameters
3348 * (unconditionally to avoid races)
3349 */
3350 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3351 tx_tspec->downgraded = false;
3352 ieee80211_sta_handle_tspec_ac_params(sdata);
3353
3354 /* finally clear all the data */
3355 memset(tx_tspec, 0, sizeof(*tx_tspec));
3356
3357 return 0;
3358 }
3359
3360 return -ENOENT;
3361 }
3362
3363 const struct cfg80211_ops mac80211_config_ops = {
3364 .add_virtual_intf = ieee80211_add_iface,
3365 .del_virtual_intf = ieee80211_del_iface,
3366 .change_virtual_intf = ieee80211_change_iface,
3367 .start_p2p_device = ieee80211_start_p2p_device,
3368 .stop_p2p_device = ieee80211_stop_p2p_device,
3369 .add_key = ieee80211_add_key,
3370 .del_key = ieee80211_del_key,
3371 .get_key = ieee80211_get_key,
3372 .set_default_key = ieee80211_config_default_key,
3373 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3374 .start_ap = ieee80211_start_ap,
3375 .change_beacon = ieee80211_change_beacon,
3376 .stop_ap = ieee80211_stop_ap,
3377 .add_station = ieee80211_add_station,
3378 .del_station = ieee80211_del_station,
3379 .change_station = ieee80211_change_station,
3380 .get_station = ieee80211_get_station,
3381 .dump_station = ieee80211_dump_station,
3382 .dump_survey = ieee80211_dump_survey,
3383 #ifdef CONFIG_MAC80211_MESH
3384 .add_mpath = ieee80211_add_mpath,
3385 .del_mpath = ieee80211_del_mpath,
3386 .change_mpath = ieee80211_change_mpath,
3387 .get_mpath = ieee80211_get_mpath,
3388 .dump_mpath = ieee80211_dump_mpath,
3389 .get_mpp = ieee80211_get_mpp,
3390 .dump_mpp = ieee80211_dump_mpp,
3391 .update_mesh_config = ieee80211_update_mesh_config,
3392 .get_mesh_config = ieee80211_get_mesh_config,
3393 .join_mesh = ieee80211_join_mesh,
3394 .leave_mesh = ieee80211_leave_mesh,
3395 #endif
3396 .join_ocb = ieee80211_join_ocb,
3397 .leave_ocb = ieee80211_leave_ocb,
3398 .change_bss = ieee80211_change_bss,
3399 .set_txq_params = ieee80211_set_txq_params,
3400 .set_monitor_channel = ieee80211_set_monitor_channel,
3401 .suspend = ieee80211_suspend,
3402 .resume = ieee80211_resume,
3403 .scan = ieee80211_scan,
3404 .abort_scan = ieee80211_abort_scan,
3405 .sched_scan_start = ieee80211_sched_scan_start,
3406 .sched_scan_stop = ieee80211_sched_scan_stop,
3407 .auth = ieee80211_auth,
3408 .assoc = ieee80211_assoc,
3409 .deauth = ieee80211_deauth,
3410 .disassoc = ieee80211_disassoc,
3411 .join_ibss = ieee80211_join_ibss,
3412 .leave_ibss = ieee80211_leave_ibss,
3413 .set_mcast_rate = ieee80211_set_mcast_rate,
3414 .set_wiphy_params = ieee80211_set_wiphy_params,
3415 .set_tx_power = ieee80211_set_tx_power,
3416 .get_tx_power = ieee80211_get_tx_power,
3417 .set_wds_peer = ieee80211_set_wds_peer,
3418 .rfkill_poll = ieee80211_rfkill_poll,
3419 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3420 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3421 .set_power_mgmt = ieee80211_set_power_mgmt,
3422 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3423 .remain_on_channel = ieee80211_remain_on_channel,
3424 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3425 .mgmt_tx = ieee80211_mgmt_tx,
3426 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3427 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3428 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3429 .set_antenna = ieee80211_set_antenna,
3430 .get_antenna = ieee80211_get_antenna,
3431 .set_rekey_data = ieee80211_set_rekey_data,
3432 .tdls_oper = ieee80211_tdls_oper,
3433 .tdls_mgmt = ieee80211_tdls_mgmt,
3434 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3435 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3436 .probe_client = ieee80211_probe_client,
3437 .set_noack_map = ieee80211_set_noack_map,
3438 #ifdef CONFIG_PM
3439 .set_wakeup = ieee80211_set_wakeup,
3440 #endif
3441 .get_channel = ieee80211_cfg_get_channel,
3442 .start_radar_detection = ieee80211_start_radar_detection,
3443 .channel_switch = ieee80211_channel_switch,
3444 .set_qos_map = ieee80211_set_qos_map,
3445 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3446 .add_tx_ts = ieee80211_add_tx_ts,
3447 .del_tx_ts = ieee80211_del_tx_ts,
3448 };
Linux kernel - Deliverables
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