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14#include <linux/delay.h>
15#include <linux/fips.h>
16#include <linux/if_ether.h>
17#include <linux/skbuff.h>
18#include <linux/if_arp.h>
19#include <linux/etherdevice.h>
20#include <linux/moduleparam.h>
21#include <linux/rtnetlink.h>
22#include <linux/crc32.h>
23#include <linux/slab.h>
24#include <linux/export.h>
25#include <net/mac80211.h>
26#include <asm/unaligned.h>
27
28#include "ieee80211_i.h"
29#include "driver-ops.h"
30#include "rate.h"
31#include "led.h"
32#include "fils_aead.h"
33
34#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
35#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
36#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
37#define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2)
38#define IEEE80211_AUTH_MAX_TRIES 3
39#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
40#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
41#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
42#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
43#define IEEE80211_ASSOC_MAX_TRIES 3
44
45static int max_nullfunc_tries = 2;
46module_param(max_nullfunc_tries, int, 0644);
47MODULE_PARM_DESC(max_nullfunc_tries,
48 "Maximum nullfunc tx tries before disconnecting (reason 4).");
49
50static int max_probe_tries = 5;
51module_param(max_probe_tries, int, 0644);
52MODULE_PARM_DESC(max_probe_tries,
53 "Maximum probe tries before disconnecting (reason 4).");
54
55
56
57
58
59
60
61
62
63static int beacon_loss_count = 7;
64module_param(beacon_loss_count, int, 0644);
65MODULE_PARM_DESC(beacon_loss_count,
66 "Number of beacon intervals before we decide beacon was lost.");
67
68
69
70
71
72#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
73
74
75
76
77
78static int probe_wait_ms = 500;
79module_param(probe_wait_ms, int, 0644);
80MODULE_PARM_DESC(probe_wait_ms,
81 "Maximum time(ms) to wait for probe response"
82 " before disconnecting (reason 4).");
83
84
85
86
87
88#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
89
90
91
92
93
94
95
96
97
98
99
100static void run_again(struct ieee80211_sub_if_data *sdata,
101 unsigned long timeout)
102{
103 sdata_assert_lock(sdata);
104
105 if (!timer_pending(&sdata->u.mgd.timer) ||
106 time_before(timeout, sdata->u.mgd.timer.expires))
107 mod_timer(&sdata->u.mgd.timer, timeout);
108}
109
110void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
111{
112 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
113 return;
114
115 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
116 return;
117
118 mod_timer(&sdata->u.mgd.bcn_mon_timer,
119 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
120}
121
122void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
123{
124 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
125
126 if (unlikely(!ifmgd->associated))
127 return;
128
129 if (ifmgd->probe_send_count)
130 ifmgd->probe_send_count = 0;
131
132 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
133 return;
134
135 mod_timer(&ifmgd->conn_mon_timer,
136 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
137}
138
139static int ecw2cw(int ecw)
140{
141 return (1 << ecw) - 1;
142}
143
144static u32
145ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
146 struct ieee80211_supported_band *sband,
147 struct ieee80211_channel *channel,
148 const struct ieee80211_ht_operation *ht_oper,
149 const struct ieee80211_vht_operation *vht_oper,
150 const struct ieee80211_he_operation *he_oper,
151 struct cfg80211_chan_def *chandef, bool tracking)
152{
153 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
154 struct cfg80211_chan_def vht_chandef;
155 struct ieee80211_sta_ht_cap sta_ht_cap;
156 u32 ht_cfreq, ret;
157
158 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
159 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
160
161 chandef->chan = channel;
162 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
163 chandef->center_freq1 = channel->center_freq;
164 chandef->center_freq2 = 0;
165
166 if (!ht_oper || !sta_ht_cap.ht_supported) {
167 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
168 goto out;
169 }
170
171 chandef->width = NL80211_CHAN_WIDTH_20;
172
173 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
174 channel->band);
175
176 if (!tracking && channel->center_freq != ht_cfreq) {
177
178
179
180
181
182
183
184 sdata_info(sdata,
185 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
186 channel->center_freq, ht_cfreq,
187 ht_oper->primary_chan, channel->band);
188 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
189 goto out;
190 }
191
192
193 if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
194 ieee80211_chandef_ht_oper(ht_oper, chandef);
195 } else {
196
197 ret = IEEE80211_STA_DISABLE_VHT;
198
199 ret |= IEEE80211_STA_DISABLE_40MHZ;
200 goto out;
201 }
202
203 if (!vht_oper || !sband->vht_cap.vht_supported) {
204 ret = IEEE80211_STA_DISABLE_VHT;
205 goto out;
206 }
207
208 vht_chandef = *chandef;
209 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && he_oper &&
210 (le32_to_cpu(he_oper->he_oper_params) &
211 IEEE80211_HE_OPERATION_VHT_OPER_INFO)) {
212 struct ieee80211_vht_operation he_oper_vht_cap;
213
214
215
216
217
218 memcpy(&he_oper_vht_cap, he_oper->optional, 3);
219 he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0);
220
221 if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
222 &he_oper_vht_cap, ht_oper,
223 &vht_chandef)) {
224 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
225 sdata_info(sdata,
226 "HE AP VHT information is invalid, disable HE\n");
227 ret = IEEE80211_STA_DISABLE_HE;
228 goto out;
229 }
230 } else if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_oper,
231 ht_oper, &vht_chandef)) {
232 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
233 sdata_info(sdata,
234 "AP VHT information is invalid, disable VHT\n");
235 ret = IEEE80211_STA_DISABLE_VHT;
236 goto out;
237 }
238
239 if (!cfg80211_chandef_valid(&vht_chandef)) {
240 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
241 sdata_info(sdata,
242 "AP VHT information is invalid, disable VHT\n");
243 ret = IEEE80211_STA_DISABLE_VHT;
244 goto out;
245 }
246
247 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
248 ret = 0;
249 goto out;
250 }
251
252 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
253 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
254 sdata_info(sdata,
255 "AP VHT information doesn't match HT, disable VHT\n");
256 ret = IEEE80211_STA_DISABLE_VHT;
257 goto out;
258 }
259
260 *chandef = vht_chandef;
261
262 ret = 0;
263
264out:
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283 if (tracking &&
284 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
285 return ret;
286
287
288 if (ret & IEEE80211_STA_DISABLE_VHT)
289 vht_chandef = *chandef;
290
291
292
293
294
295
296
297
298
299 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
300 tracking ? 0 :
301 IEEE80211_CHAN_DISABLED)) {
302 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
303 ret = IEEE80211_STA_DISABLE_HT |
304 IEEE80211_STA_DISABLE_VHT;
305 break;
306 }
307
308 ret |= ieee80211_chandef_downgrade(chandef);
309 }
310
311 if (chandef->width != vht_chandef.width && !tracking)
312 sdata_info(sdata,
313 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
314
315 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
316 return ret;
317}
318
319static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
320 struct sta_info *sta,
321 const struct ieee80211_ht_cap *ht_cap,
322 const struct ieee80211_ht_operation *ht_oper,
323 const struct ieee80211_vht_operation *vht_oper,
324 const struct ieee80211_he_operation *he_oper,
325 const u8 *bssid, u32 *changed)
326{
327 struct ieee80211_local *local = sdata->local;
328 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
329 struct ieee80211_channel *chan = sdata->vif.bss_conf.chandef.chan;
330 struct ieee80211_supported_band *sband =
331 local->hw.wiphy->bands[chan->band];
332 struct cfg80211_chan_def chandef;
333 u16 ht_opmode;
334 u32 flags;
335 enum ieee80211_sta_rx_bandwidth new_sta_bw;
336 int ret;
337
338
339 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
340 return 0;
341
342
343 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
344 vht_oper = NULL;
345
346
347 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE ||
348 !ieee80211_get_he_sta_cap(sband))
349 he_oper = NULL;
350
351 if (WARN_ON_ONCE(!sta))
352 return -EINVAL;
353
354
355
356
357
358 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
359 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
360 *changed |= BSS_CHANGED_HT;
361 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
362 }
363
364
365 flags = ieee80211_determine_chantype(sdata, sband, chan,
366 ht_oper, vht_oper, he_oper,
367 &chandef, true);
368
369
370
371
372
373
374
375
376 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
377 chandef.width == NL80211_CHAN_WIDTH_80P80)
378 flags |= ieee80211_chandef_downgrade(&chandef);
379 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
380 chandef.width == NL80211_CHAN_WIDTH_160)
381 flags |= ieee80211_chandef_downgrade(&chandef);
382 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
383 chandef.width > NL80211_CHAN_WIDTH_20)
384 flags |= ieee80211_chandef_downgrade(&chandef);
385
386 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
387 return 0;
388
389 sdata_info(sdata,
390 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
391 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
392 chandef.center_freq1, chandef.center_freq2);
393
394 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
395 IEEE80211_STA_DISABLE_VHT |
396 IEEE80211_STA_DISABLE_40MHZ |
397 IEEE80211_STA_DISABLE_80P80MHZ |
398 IEEE80211_STA_DISABLE_160MHZ)) ||
399 !cfg80211_chandef_valid(&chandef)) {
400 sdata_info(sdata,
401 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
402 ifmgd->bssid);
403 return -EINVAL;
404 }
405
406 switch (chandef.width) {
407 case NL80211_CHAN_WIDTH_20_NOHT:
408 case NL80211_CHAN_WIDTH_20:
409 new_sta_bw = IEEE80211_STA_RX_BW_20;
410 break;
411 case NL80211_CHAN_WIDTH_40:
412 new_sta_bw = IEEE80211_STA_RX_BW_40;
413 break;
414 case NL80211_CHAN_WIDTH_80:
415 new_sta_bw = IEEE80211_STA_RX_BW_80;
416 break;
417 case NL80211_CHAN_WIDTH_80P80:
418 case NL80211_CHAN_WIDTH_160:
419 new_sta_bw = IEEE80211_STA_RX_BW_160;
420 break;
421 default:
422 return -EINVAL;
423 }
424
425 if (new_sta_bw > sta->cur_max_bandwidth)
426 new_sta_bw = sta->cur_max_bandwidth;
427
428 if (new_sta_bw < sta->sta.bandwidth) {
429 sta->sta.bandwidth = new_sta_bw;
430 rate_control_rate_update(local, sband, sta,
431 IEEE80211_RC_BW_CHANGED);
432 }
433
434 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
435 if (ret) {
436 sdata_info(sdata,
437 "AP %pM changed bandwidth to incompatible one - disconnect\n",
438 ifmgd->bssid);
439 return ret;
440 }
441
442 if (new_sta_bw > sta->sta.bandwidth) {
443 sta->sta.bandwidth = new_sta_bw;
444 rate_control_rate_update(local, sband, sta,
445 IEEE80211_RC_BW_CHANGED);
446 }
447
448 return 0;
449}
450
451
452
453static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
454 struct sk_buff *skb, u8 ap_ht_param,
455 struct ieee80211_supported_band *sband,
456 struct ieee80211_channel *channel,
457 enum ieee80211_smps_mode smps)
458{
459 u8 *pos;
460 u32 flags = channel->flags;
461 u16 cap;
462 struct ieee80211_sta_ht_cap ht_cap;
463
464 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
465
466 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
467 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
468
469
470 cap = ht_cap.cap;
471
472 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
473 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
474 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
475 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
476 cap &= ~IEEE80211_HT_CAP_SGI_40;
477 }
478 break;
479 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
480 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
481 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
482 cap &= ~IEEE80211_HT_CAP_SGI_40;
483 }
484 break;
485 }
486
487
488
489
490
491
492 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
493 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
494 cap &= ~IEEE80211_HT_CAP_SGI_40;
495 }
496
497
498 cap &= ~IEEE80211_HT_CAP_SM_PS;
499 switch (smps) {
500 case IEEE80211_SMPS_AUTOMATIC:
501 case IEEE80211_SMPS_NUM_MODES:
502 WARN_ON(1);
503
504 case IEEE80211_SMPS_OFF:
505 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
506 IEEE80211_HT_CAP_SM_PS_SHIFT;
507 break;
508 case IEEE80211_SMPS_STATIC:
509 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
510 IEEE80211_HT_CAP_SM_PS_SHIFT;
511 break;
512 case IEEE80211_SMPS_DYNAMIC:
513 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
514 IEEE80211_HT_CAP_SM_PS_SHIFT;
515 break;
516 }
517
518
519 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
520 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
521}
522
523
524
525
526
527static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
528 struct sk_buff *skb,
529 struct ieee80211_supported_band *sband,
530 struct ieee80211_vht_cap *ap_vht_cap)
531{
532 struct ieee80211_local *local = sdata->local;
533 u8 *pos;
534 u32 cap;
535 struct ieee80211_sta_vht_cap vht_cap;
536 u32 mask, ap_bf_sts, our_bf_sts;
537
538 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
539
540 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
541 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
542
543
544 cap = vht_cap.cap;
545
546 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
547 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
548
549 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
550 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
551 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
552 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
553 }
554
555 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
556 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
557 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
558 }
559
560
561
562
563
564 if (!(ap_vht_cap->vht_cap_info &
565 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
566 cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
567 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
568 else if (!(ap_vht_cap->vht_cap_info &
569 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
570 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
571
572
573
574
575
576
577
578
579 if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
580 bool disable_mu_mimo = false;
581 struct ieee80211_sub_if_data *other;
582
583 list_for_each_entry_rcu(other, &local->interfaces, list) {
584 if (other->vif.mu_mimo_owner) {
585 disable_mu_mimo = true;
586 break;
587 }
588 }
589 if (disable_mu_mimo)
590 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
591 else
592 sdata->vif.mu_mimo_owner = true;
593 }
594
595 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
596
597 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
598 our_bf_sts = cap & mask;
599
600 if (ap_bf_sts < our_bf_sts) {
601 cap &= ~mask;
602 cap |= ap_bf_sts;
603 }
604
605
606 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
607 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
608}
609
610
611
612
613static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
614 struct sk_buff *skb,
615 struct ieee80211_supported_band *sband)
616{
617 u8 *pos;
618 const struct ieee80211_sta_he_cap *he_cap = NULL;
619 u8 he_cap_size;
620
621 he_cap = ieee80211_get_he_sta_cap(sband);
622 if (!he_cap)
623 return;
624
625
626
627
628
629 he_cap_size =
630 2 + 1 + sizeof(he_cap->he_cap_elem) +
631 ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem) +
632 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
633 he_cap->he_cap_elem.phy_cap_info);
634 pos = skb_put(skb, he_cap_size);
635 ieee80211_ie_build_he_cap(pos, he_cap, pos + he_cap_size);
636}
637
638static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
639{
640 struct ieee80211_local *local = sdata->local;
641 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
642 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
643 struct sk_buff *skb;
644 struct ieee80211_mgmt *mgmt;
645 u8 *pos, qos_info, *ie_start;
646 size_t offset = 0, noffset;
647 int i, count, rates_len, supp_rates_len, shift;
648 u16 capab;
649 struct ieee80211_supported_band *sband;
650 struct ieee80211_chanctx_conf *chanctx_conf;
651 struct ieee80211_channel *chan;
652 u32 rates = 0;
653
654 sdata_assert_lock(sdata);
655
656 rcu_read_lock();
657 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
658 if (WARN_ON(!chanctx_conf)) {
659 rcu_read_unlock();
660 return;
661 }
662 chan = chanctx_conf->def.chan;
663 rcu_read_unlock();
664 sband = local->hw.wiphy->bands[chan->band];
665 shift = ieee80211_vif_get_shift(&sdata->vif);
666
667 if (assoc_data->supp_rates_len) {
668
669
670
671
672
673
674 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
675 assoc_data->supp_rates,
676 assoc_data->supp_rates_len,
677 &rates);
678 } else {
679
680
681
682
683
684 rates_len = 0;
685 for (i = 0; i < sband->n_bitrates; i++) {
686 rates |= BIT(i);
687 rates_len++;
688 }
689 }
690
691 skb = alloc_skb(local->hw.extra_tx_headroom +
692 sizeof(*mgmt) +
693 2 + assoc_data->ssid_len +
694 4 + rates_len +
695 4 +
696 2 + 2 * sband->n_channels +
697 2 + sizeof(struct ieee80211_ht_cap) +
698 2 + sizeof(struct ieee80211_vht_cap) +
699 2 + 1 + sizeof(struct ieee80211_he_cap_elem) +
700 sizeof(struct ieee80211_he_mcs_nss_supp) +
701 IEEE80211_HE_PPE_THRES_MAX_LEN +
702 assoc_data->ie_len +
703 (assoc_data->fils_kek_len ? 16 : 0) +
704 9,
705 GFP_KERNEL);
706 if (!skb)
707 return;
708
709 skb_reserve(skb, local->hw.extra_tx_headroom);
710
711 capab = WLAN_CAPABILITY_ESS;
712
713 if (sband->band == NL80211_BAND_2GHZ) {
714 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
715 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
716 }
717
718 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
719 capab |= WLAN_CAPABILITY_PRIVACY;
720
721 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
722 ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
723 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
724
725 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
726 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
727
728 mgmt = skb_put_zero(skb, 24);
729 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
730 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
731 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
732
733 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
734 skb_put(skb, 10);
735 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
736 IEEE80211_STYPE_REASSOC_REQ);
737 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
738 mgmt->u.reassoc_req.listen_interval =
739 cpu_to_le16(local->hw.conf.listen_interval);
740 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
741 ETH_ALEN);
742 } else {
743 skb_put(skb, 4);
744 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
745 IEEE80211_STYPE_ASSOC_REQ);
746 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
747 mgmt->u.assoc_req.listen_interval =
748 cpu_to_le16(local->hw.conf.listen_interval);
749 }
750
751
752 pos = skb_put(skb, 2 + assoc_data->ssid_len);
753 ie_start = pos;
754 *pos++ = WLAN_EID_SSID;
755 *pos++ = assoc_data->ssid_len;
756 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
757
758
759 supp_rates_len = rates_len;
760 if (supp_rates_len > 8)
761 supp_rates_len = 8;
762
763 pos = skb_put(skb, supp_rates_len + 2);
764 *pos++ = WLAN_EID_SUPP_RATES;
765 *pos++ = supp_rates_len;
766
767 count = 0;
768 for (i = 0; i < sband->n_bitrates; i++) {
769 if (BIT(i) & rates) {
770 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
771 5 * (1 << shift));
772 *pos++ = (u8) rate;
773 if (++count == 8)
774 break;
775 }
776 }
777
778 if (rates_len > count) {
779 pos = skb_put(skb, rates_len - count + 2);
780 *pos++ = WLAN_EID_EXT_SUPP_RATES;
781 *pos++ = rates_len - count;
782
783 for (i++; i < sband->n_bitrates; i++) {
784 if (BIT(i) & rates) {
785 int rate;
786 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
787 5 * (1 << shift));
788 *pos++ = (u8) rate;
789 }
790 }
791 }
792
793 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
794 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
795 pos = skb_put(skb, 4);
796 *pos++ = WLAN_EID_PWR_CAPABILITY;
797 *pos++ = 2;
798 *pos++ = 0;
799
800 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
801 }
802
803 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
804
805 pos = skb_put(skb, 2 * sband->n_channels + 2);
806 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
807 *pos++ = 2 * sband->n_channels;
808 for (i = 0; i < sband->n_channels; i++) {
809 *pos++ = ieee80211_frequency_to_channel(
810 sband->channels[i].center_freq);
811 *pos++ = 1;
812 }
813 }
814
815
816 if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) &&
817 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && assoc_data->ie_len) {
818 struct element *elem;
819
820
821 elem = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
822 assoc_data->ie,
823 assoc_data->ie_len);
824
825
826 if (elem && elem->datalen >= 3)
827 elem->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
828 }
829
830
831 if (assoc_data->ie_len) {
832 static const u8 before_ht[] = {
833 WLAN_EID_SSID,
834 WLAN_EID_SUPP_RATES,
835 WLAN_EID_EXT_SUPP_RATES,
836 WLAN_EID_PWR_CAPABILITY,
837 WLAN_EID_SUPPORTED_CHANNELS,
838 WLAN_EID_RSN,
839 WLAN_EID_QOS_CAPA,
840 WLAN_EID_RRM_ENABLED_CAPABILITIES,
841 WLAN_EID_MOBILITY_DOMAIN,
842 WLAN_EID_FAST_BSS_TRANSITION,
843 WLAN_EID_RIC_DATA,
844 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
845 };
846 static const u8 after_ric[] = {
847 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
848 WLAN_EID_HT_CAPABILITY,
849 WLAN_EID_BSS_COEX_2040,
850
851 WLAN_EID_EXT_CAPABILITY,
852 WLAN_EID_QOS_TRAFFIC_CAPA,
853 WLAN_EID_TIM_BCAST_REQ,
854 WLAN_EID_INTERWORKING,
855
856 WLAN_EID_VHT_CAPABILITY,
857 WLAN_EID_OPMODE_NOTIF,
858 };
859
860 noffset = ieee80211_ie_split_ric(assoc_data->ie,
861 assoc_data->ie_len,
862 before_ht,
863 ARRAY_SIZE(before_ht),
864 after_ric,
865 ARRAY_SIZE(after_ric),
866 offset);
867 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
868 offset = noffset;
869 }
870
871 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
872 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
873 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
874
875 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
876 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
877 sband, chan, sdata->smps_mode);
878
879
880 if (assoc_data->ie_len) {
881 static const u8 before_vht[] = {
882
883
884
885
886 WLAN_EID_BSS_COEX_2040,
887 WLAN_EID_EXT_CAPABILITY,
888 WLAN_EID_QOS_TRAFFIC_CAPA,
889 WLAN_EID_TIM_BCAST_REQ,
890 WLAN_EID_INTERWORKING,
891
892 };
893
894
895 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
896 before_vht, ARRAY_SIZE(before_vht),
897 offset);
898 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
899 offset = noffset;
900 }
901
902
903 if (assoc_data->ie_len) {
904 static const u8 before_he[] = {
905
906
907
908
909 WLAN_EID_OPMODE_NOTIF,
910 WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE,
911
912 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION,
913 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY,
914 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM,
915 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER,
916 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN,
917
918 };
919
920
921 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
922 before_he, ARRAY_SIZE(before_he),
923 offset);
924 pos = skb_put(skb, noffset - offset);
925 memcpy(pos, assoc_data->ie + offset, noffset - offset);
926 offset = noffset;
927 }
928
929 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
930 ieee80211_add_vht_ie(sdata, skb, sband,
931 &assoc_data->ap_vht_cap);
932
933
934
935
936
937 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT ||
938 (sband->band == NL80211_BAND_5GHZ &&
939 ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
940 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
941
942 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
943 ieee80211_add_he_ie(sdata, skb, sband);
944
945
946 if (assoc_data->ie_len) {
947 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
948 assoc_data->ie_len,
949 offset);
950 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
951 offset = noffset;
952 }
953
954 if (assoc_data->wmm) {
955 if (assoc_data->uapsd) {
956 qos_info = ifmgd->uapsd_queues;
957 qos_info |= (ifmgd->uapsd_max_sp_len <<
958 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
959 } else {
960 qos_info = 0;
961 }
962
963 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
964 }
965
966
967 if (assoc_data->ie_len) {
968 noffset = assoc_data->ie_len;
969 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
970 }
971
972 if (assoc_data->fils_kek_len &&
973 fils_encrypt_assoc_req(skb, assoc_data) < 0) {
974 dev_kfree_skb(skb);
975 return;
976 }
977
978 pos = skb_tail_pointer(skb);
979 kfree(ifmgd->assoc_req_ies);
980 ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC);
981 ifmgd->assoc_req_ies_len = pos - ie_start;
982
983 drv_mgd_prepare_tx(local, sdata, 0);
984
985 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
986 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
987 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
988 IEEE80211_TX_INTFL_MLME_CONN_TX;
989 ieee80211_tx_skb(sdata, skb);
990}
991
992void ieee80211_send_pspoll(struct ieee80211_local *local,
993 struct ieee80211_sub_if_data *sdata)
994{
995 struct ieee80211_pspoll *pspoll;
996 struct sk_buff *skb;
997
998 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
999 if (!skb)
1000 return;
1001
1002 pspoll = (struct ieee80211_pspoll *) skb->data;
1003 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1004
1005 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1006 ieee80211_tx_skb(sdata, skb);
1007}
1008
1009void ieee80211_send_nullfunc(struct ieee80211_local *local,
1010 struct ieee80211_sub_if_data *sdata,
1011 bool powersave)
1012{
1013 struct sk_buff *skb;
1014 struct ieee80211_hdr_3addr *nullfunc;
1015 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1016
1017
1018 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1019 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
1020 return;
1021
1022 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
1023 !ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP));
1024 if (!skb)
1025 return;
1026
1027 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
1028 if (powersave)
1029 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1030
1031 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1032 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
1033
1034 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1035 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
1036
1037 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
1038 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
1039
1040 ieee80211_tx_skb(sdata, skb);
1041}
1042
1043static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
1044 struct ieee80211_sub_if_data *sdata)
1045{
1046 struct sk_buff *skb;
1047 struct ieee80211_hdr *nullfunc;
1048 __le16 fc;
1049
1050 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1051 return;
1052
1053
1054 if (!(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE))
1055 return;
1056
1057 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
1058 if (!skb)
1059 return;
1060
1061 skb_reserve(skb, local->hw.extra_tx_headroom);
1062
1063 nullfunc = skb_put_zero(skb, 30);
1064 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
1065 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
1066 nullfunc->frame_control = fc;
1067 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
1068 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
1069 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
1070 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
1071
1072 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1073 ieee80211_tx_skb(sdata, skb);
1074}
1075
1076
1077static void ieee80211_chswitch_work(struct work_struct *work)
1078{
1079 struct ieee80211_sub_if_data *sdata =
1080 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
1081 struct ieee80211_local *local = sdata->local;
1082 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1083 int ret;
1084
1085 if (!ieee80211_sdata_running(sdata))
1086 return;
1087
1088 sdata_lock(sdata);
1089 mutex_lock(&local->mtx);
1090 mutex_lock(&local->chanctx_mtx);
1091
1092 if (!ifmgd->associated)
1093 goto out;
1094
1095 if (!sdata->vif.csa_active)
1096 goto out;
1097
1098
1099
1100
1101
1102
1103
1104
1105 if (sdata->reserved_chanctx) {
1106 struct ieee80211_supported_band *sband = NULL;
1107 struct sta_info *mgd_sta = NULL;
1108 enum ieee80211_sta_rx_bandwidth bw = IEEE80211_STA_RX_BW_20;
1109
1110
1111
1112
1113
1114
1115 if (sdata->reserved_ready)
1116 goto out;
1117
1118 if (sdata->vif.bss_conf.chandef.width !=
1119 sdata->csa_chandef.width) {
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130 switch (sdata->csa_chandef.width) {
1131 case NL80211_CHAN_WIDTH_20_NOHT:
1132 case NL80211_CHAN_WIDTH_20:
1133 default:
1134 bw = IEEE80211_STA_RX_BW_20;
1135 break;
1136 case NL80211_CHAN_WIDTH_40:
1137 bw = IEEE80211_STA_RX_BW_40;
1138 break;
1139 case NL80211_CHAN_WIDTH_80:
1140 bw = IEEE80211_STA_RX_BW_80;
1141 break;
1142 case NL80211_CHAN_WIDTH_80P80:
1143 case NL80211_CHAN_WIDTH_160:
1144 bw = IEEE80211_STA_RX_BW_160;
1145 break;
1146 }
1147
1148 mgd_sta = sta_info_get(sdata, ifmgd->bssid);
1149 sband =
1150 local->hw.wiphy->bands[sdata->csa_chandef.chan->band];
1151 }
1152
1153 if (sdata->vif.bss_conf.chandef.width >
1154 sdata->csa_chandef.width) {
1155 mgd_sta->sta.bandwidth = bw;
1156 rate_control_rate_update(local, sband, mgd_sta,
1157 IEEE80211_RC_BW_CHANGED);
1158 }
1159
1160 ret = ieee80211_vif_use_reserved_context(sdata);
1161 if (ret) {
1162 sdata_info(sdata,
1163 "failed to use reserved channel context, disconnecting (err=%d)\n",
1164 ret);
1165 ieee80211_queue_work(&sdata->local->hw,
1166 &ifmgd->csa_connection_drop_work);
1167 goto out;
1168 }
1169
1170 if (sdata->vif.bss_conf.chandef.width <
1171 sdata->csa_chandef.width) {
1172 mgd_sta->sta.bandwidth = bw;
1173 rate_control_rate_update(local, sband, mgd_sta,
1174 IEEE80211_RC_BW_CHANGED);
1175 }
1176
1177 goto out;
1178 }
1179
1180 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1181 &sdata->csa_chandef)) {
1182 sdata_info(sdata,
1183 "failed to finalize channel switch, disconnecting\n");
1184 ieee80211_queue_work(&sdata->local->hw,
1185 &ifmgd->csa_connection_drop_work);
1186 goto out;
1187 }
1188
1189 ifmgd->csa_waiting_bcn = true;
1190
1191 ieee80211_sta_reset_beacon_monitor(sdata);
1192 ieee80211_sta_reset_conn_monitor(sdata);
1193
1194out:
1195 mutex_unlock(&local->chanctx_mtx);
1196 mutex_unlock(&local->mtx);
1197 sdata_unlock(sdata);
1198}
1199
1200static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1201{
1202 struct ieee80211_local *local = sdata->local;
1203 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1204 int ret;
1205
1206 sdata_assert_lock(sdata);
1207
1208 WARN_ON(!sdata->vif.csa_active);
1209
1210 if (sdata->csa_block_tx) {
1211 ieee80211_wake_vif_queues(local, sdata,
1212 IEEE80211_QUEUE_STOP_REASON_CSA);
1213 sdata->csa_block_tx = false;
1214 }
1215
1216 sdata->vif.csa_active = false;
1217 ifmgd->csa_waiting_bcn = false;
1218
1219 ret = drv_post_channel_switch(sdata);
1220 if (ret) {
1221 sdata_info(sdata,
1222 "driver post channel switch failed, disconnecting\n");
1223 ieee80211_queue_work(&local->hw,
1224 &ifmgd->csa_connection_drop_work);
1225 return;
1226 }
1227
1228 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
1229}
1230
1231void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1232{
1233 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1234 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1235
1236 trace_api_chswitch_done(sdata, success);
1237 if (!success) {
1238 sdata_info(sdata,
1239 "driver channel switch failed, disconnecting\n");
1240 ieee80211_queue_work(&sdata->local->hw,
1241 &ifmgd->csa_connection_drop_work);
1242 } else {
1243 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
1244 }
1245}
1246EXPORT_SYMBOL(ieee80211_chswitch_done);
1247
1248static void ieee80211_chswitch_timer(struct timer_list *t)
1249{
1250 struct ieee80211_sub_if_data *sdata =
1251 from_timer(sdata, t, u.mgd.chswitch_timer);
1252
1253 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
1254}
1255
1256static void
1257ieee80211_sta_abort_chanswitch(struct ieee80211_sub_if_data *sdata)
1258{
1259 struct ieee80211_local *local = sdata->local;
1260
1261 if (!local->ops->abort_channel_switch)
1262 return;
1263
1264 mutex_lock(&local->mtx);
1265
1266 mutex_lock(&local->chanctx_mtx);
1267 ieee80211_vif_unreserve_chanctx(sdata);
1268 mutex_unlock(&local->chanctx_mtx);
1269
1270 if (sdata->csa_block_tx)
1271 ieee80211_wake_vif_queues(local, sdata,
1272 IEEE80211_QUEUE_STOP_REASON_CSA);
1273
1274 sdata->csa_block_tx = false;
1275 sdata->vif.csa_active = false;
1276
1277 mutex_unlock(&local->mtx);
1278
1279 drv_abort_channel_switch(sdata);
1280}
1281
1282static void
1283ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1284 u64 timestamp, u32 device_timestamp,
1285 struct ieee802_11_elems *elems,
1286 bool beacon)
1287{
1288 struct ieee80211_local *local = sdata->local;
1289 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1290 struct cfg80211_bss *cbss = ifmgd->associated;
1291 struct ieee80211_chanctx_conf *conf;
1292 struct ieee80211_chanctx *chanctx;
1293 enum nl80211_band current_band;
1294 struct ieee80211_csa_ie csa_ie;
1295 struct ieee80211_channel_switch ch_switch;
1296 int res;
1297
1298 sdata_assert_lock(sdata);
1299
1300 if (!cbss)
1301 return;
1302
1303 if (local->scanning)
1304 return;
1305
1306 current_band = cbss->channel->band;
1307 res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
1308 ifmgd->flags,
1309 ifmgd->associated->bssid, &csa_ie);
1310
1311 if (!res) {
1312 ch_switch.timestamp = timestamp;
1313 ch_switch.device_timestamp = device_timestamp;
1314 ch_switch.block_tx = beacon ? csa_ie.mode : 0;
1315 ch_switch.chandef = csa_ie.chandef;
1316 ch_switch.count = csa_ie.count;
1317 ch_switch.delay = csa_ie.max_switch_time;
1318 }
1319
1320 if (res < 0) {
1321 ieee80211_queue_work(&local->hw,
1322 &ifmgd->csa_connection_drop_work);
1323 return;
1324 }
1325
1326 if (beacon && sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) {
1327 if (res)
1328 ieee80211_sta_abort_chanswitch(sdata);
1329 else
1330 drv_channel_switch_rx_beacon(sdata, &ch_switch);
1331 return;
1332 } else if (sdata->vif.csa_active || res) {
1333
1334 return;
1335 }
1336
1337 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
1338 IEEE80211_CHAN_DISABLED)) {
1339 sdata_info(sdata,
1340 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
1341 ifmgd->associated->bssid,
1342 csa_ie.chandef.chan->center_freq,
1343 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1344 csa_ie.chandef.center_freq2);
1345 ieee80211_queue_work(&local->hw,
1346 &ifmgd->csa_connection_drop_work);
1347 return;
1348 }
1349
1350 if (cfg80211_chandef_identical(&csa_ie.chandef,
1351 &sdata->vif.bss_conf.chandef) &&
1352 (!csa_ie.mode || !beacon)) {
1353 if (ifmgd->csa_ignored_same_chan)
1354 return;
1355 sdata_info(sdata,
1356 "AP %pM tries to chanswitch to same channel, ignore\n",
1357 ifmgd->associated->bssid);
1358 ifmgd->csa_ignored_same_chan = true;
1359 return;
1360 }
1361
1362
1363
1364
1365
1366
1367
1368 ieee80211_teardown_tdls_peers(sdata);
1369
1370 mutex_lock(&local->mtx);
1371 mutex_lock(&local->chanctx_mtx);
1372 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1373 lockdep_is_held(&local->chanctx_mtx));
1374 if (!conf) {
1375 sdata_info(sdata,
1376 "no channel context assigned to vif?, disconnecting\n");
1377 goto drop_connection;
1378 }
1379
1380 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1381
1382 if (local->use_chanctx &&
1383 !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) {
1384 sdata_info(sdata,
1385 "driver doesn't support chan-switch with channel contexts\n");
1386 goto drop_connection;
1387 }
1388
1389 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1390 sdata_info(sdata,
1391 "preparing for channel switch failed, disconnecting\n");
1392 goto drop_connection;
1393 }
1394
1395 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1396 chanctx->mode, false);
1397 if (res) {
1398 sdata_info(sdata,
1399 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1400 res);
1401 goto drop_connection;
1402 }
1403 mutex_unlock(&local->chanctx_mtx);
1404
1405 sdata->vif.csa_active = true;
1406 sdata->csa_chandef = csa_ie.chandef;
1407 sdata->csa_block_tx = ch_switch.block_tx;
1408 ifmgd->csa_ignored_same_chan = false;
1409
1410 if (sdata->csa_block_tx)
1411 ieee80211_stop_vif_queues(local, sdata,
1412 IEEE80211_QUEUE_STOP_REASON_CSA);
1413 mutex_unlock(&local->mtx);
1414
1415 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1416 csa_ie.count);
1417
1418 if (local->ops->channel_switch) {
1419
1420 drv_channel_switch(local, sdata, &ch_switch);
1421 return;
1422 }
1423
1424
1425 if (csa_ie.count <= 1)
1426 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
1427 else
1428 mod_timer(&ifmgd->chswitch_timer,
1429 TU_TO_EXP_TIME((csa_ie.count - 1) *
1430 cbss->beacon_interval));
1431 return;
1432 drop_connection:
1433
1434
1435
1436
1437
1438
1439
1440 sdata->vif.csa_active = true;
1441 sdata->csa_block_tx = ch_switch.block_tx;
1442
1443 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
1444 mutex_unlock(&local->chanctx_mtx);
1445 mutex_unlock(&local->mtx);
1446}
1447
1448static bool
1449ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1450 struct ieee80211_channel *channel,
1451 const u8 *country_ie, u8 country_ie_len,
1452 const u8 *pwr_constr_elem,
1453 int *chan_pwr, int *pwr_reduction)
1454{
1455 struct ieee80211_country_ie_triplet *triplet;
1456 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1457 int i, chan_increment;
1458 bool have_chan_pwr = false;
1459
1460
1461 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1462 return false;
1463
1464 triplet = (void *)(country_ie + 3);
1465 country_ie_len -= 3;
1466
1467 switch (channel->band) {
1468 default:
1469 WARN_ON_ONCE(1);
1470
1471 case NL80211_BAND_2GHZ:
1472 case NL80211_BAND_60GHZ:
1473 chan_increment = 1;
1474 break;
1475 case NL80211_BAND_5GHZ:
1476 chan_increment = 4;
1477 break;
1478 }
1479
1480
1481 while (country_ie_len >= 3) {
1482 u8 first_channel = triplet->chans.first_channel;
1483
1484 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1485 goto next;
1486
1487 for (i = 0; i < triplet->chans.num_channels; i++) {
1488 if (first_channel + i * chan_increment == chan) {
1489 have_chan_pwr = true;
1490 *chan_pwr = triplet->chans.max_power;
1491 break;
1492 }
1493 }
1494 if (have_chan_pwr)
1495 break;
1496
1497 next:
1498 triplet++;
1499 country_ie_len -= 3;
1500 }
1501
1502 if (have_chan_pwr && pwr_constr_elem)
1503 *pwr_reduction = *pwr_constr_elem;
1504 else
1505 *pwr_reduction = 0;
1506
1507 return have_chan_pwr;
1508}
1509
1510static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1511 struct ieee80211_channel *channel,
1512 const u8 *cisco_dtpc_ie,
1513 int *pwr_level)
1514{
1515
1516
1517
1518
1519
1520
1521 *pwr_level = (__s8)cisco_dtpc_ie[4];
1522}
1523
1524static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1525 struct ieee80211_channel *channel,
1526 struct ieee80211_mgmt *mgmt,
1527 const u8 *country_ie, u8 country_ie_len,
1528 const u8 *pwr_constr_ie,
1529 const u8 *cisco_dtpc_ie)
1530{
1531 bool has_80211h_pwr = false, has_cisco_pwr = false;
1532 int chan_pwr = 0, pwr_reduction_80211h = 0;
1533 int pwr_level_cisco, pwr_level_80211h;
1534 int new_ap_level;
1535 __le16 capab = mgmt->u.probe_resp.capab_info;
1536
1537 if (country_ie &&
1538 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1539 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
1540 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1541 sdata, channel, country_ie, country_ie_len,
1542 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
1543 pwr_level_80211h =
1544 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1545 }
1546
1547 if (cisco_dtpc_ie) {
1548 ieee80211_find_cisco_dtpc(
1549 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1550 has_cisco_pwr = true;
1551 }
1552
1553 if (!has_80211h_pwr && !has_cisco_pwr)
1554 return 0;
1555
1556
1557
1558
1559 if (has_80211h_pwr &&
1560 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
1561 new_ap_level = pwr_level_80211h;
1562
1563 if (sdata->ap_power_level == new_ap_level)
1564 return 0;
1565
1566 sdata_dbg(sdata,
1567 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1568 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1569 sdata->u.mgd.bssid);
1570 } else {
1571 new_ap_level = pwr_level_cisco;
1572
1573 if (sdata->ap_power_level == new_ap_level)
1574 return 0;
1575
1576 sdata_dbg(sdata,
1577 "Limiting TX power to %d dBm as advertised by %pM\n",
1578 pwr_level_cisco, sdata->u.mgd.bssid);
1579 }
1580
1581 sdata->ap_power_level = new_ap_level;
1582 if (__ieee80211_recalc_txpower(sdata))
1583 return BSS_CHANGED_TXPOWER;
1584 return 0;
1585}
1586
1587
1588static void ieee80211_enable_ps(struct ieee80211_local *local,
1589 struct ieee80211_sub_if_data *sdata)
1590{
1591 struct ieee80211_conf *conf = &local->hw.conf;
1592
1593
1594
1595
1596
1597 if (local->scanning)
1598 return;
1599
1600 if (conf->dynamic_ps_timeout > 0 &&
1601 !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
1602 mod_timer(&local->dynamic_ps_timer, jiffies +
1603 msecs_to_jiffies(conf->dynamic_ps_timeout));
1604 } else {
1605 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
1606 ieee80211_send_nullfunc(local, sdata, true);
1607
1608 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1609 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1610 return;
1611
1612 conf->flags |= IEEE80211_CONF_PS;
1613 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1614 }
1615}
1616
1617static void ieee80211_change_ps(struct ieee80211_local *local)
1618{
1619 struct ieee80211_conf *conf = &local->hw.conf;
1620
1621 if (local->ps_sdata) {
1622 ieee80211_enable_ps(local, local->ps_sdata);
1623 } else if (conf->flags & IEEE80211_CONF_PS) {
1624 conf->flags &= ~IEEE80211_CONF_PS;
1625 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1626 del_timer_sync(&local->dynamic_ps_timer);
1627 cancel_work_sync(&local->dynamic_ps_enable_work);
1628 }
1629}
1630
1631static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1632{
1633 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1634 struct sta_info *sta = NULL;
1635 bool authorized = false;
1636
1637 if (!mgd->powersave)
1638 return false;
1639
1640 if (mgd->broken_ap)
1641 return false;
1642
1643 if (!mgd->associated)
1644 return false;
1645
1646 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
1647 return false;
1648
1649 if (!mgd->have_beacon)
1650 return false;
1651
1652 rcu_read_lock();
1653 sta = sta_info_get(sdata, mgd->bssid);
1654 if (sta)
1655 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
1656 rcu_read_unlock();
1657
1658 return authorized;
1659}
1660
1661
1662void ieee80211_recalc_ps(struct ieee80211_local *local)
1663{
1664 struct ieee80211_sub_if_data *sdata, *found = NULL;
1665 int count = 0;
1666 int timeout;
1667
1668 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) {
1669 local->ps_sdata = NULL;
1670 return;
1671 }
1672
1673 list_for_each_entry(sdata, &local->interfaces, list) {
1674 if (!ieee80211_sdata_running(sdata))
1675 continue;
1676 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1677
1678
1679
1680
1681 count = 0;
1682 break;
1683 }
1684 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1685 continue;
1686 found = sdata;
1687 count++;
1688 }
1689
1690 if (count == 1 && ieee80211_powersave_allowed(found)) {
1691 u8 dtimper = found->u.mgd.dtim_period;
1692
1693 timeout = local->dynamic_ps_forced_timeout;
1694 if (timeout < 0)
1695 timeout = 100;
1696 local->hw.conf.dynamic_ps_timeout = timeout;
1697
1698
1699 if (!dtimper)
1700 dtimper = 1;
1701
1702 local->hw.conf.ps_dtim_period = dtimper;
1703 local->ps_sdata = found;
1704 } else {
1705 local->ps_sdata = NULL;
1706 }
1707
1708 ieee80211_change_ps(local);
1709}
1710
1711void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1712{
1713 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1714
1715 if (sdata->vif.bss_conf.ps != ps_allowed) {
1716 sdata->vif.bss_conf.ps = ps_allowed;
1717 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1718 }
1719}
1720
1721void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1722{
1723 struct ieee80211_local *local =
1724 container_of(work, struct ieee80211_local,
1725 dynamic_ps_disable_work);
1726
1727 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1728 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1729 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1730 }
1731
1732 ieee80211_wake_queues_by_reason(&local->hw,
1733 IEEE80211_MAX_QUEUE_MAP,
1734 IEEE80211_QUEUE_STOP_REASON_PS,
1735 false);
1736}
1737
1738void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1739{
1740 struct ieee80211_local *local =
1741 container_of(work, struct ieee80211_local,
1742 dynamic_ps_enable_work);
1743 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
1744 struct ieee80211_if_managed *ifmgd;
1745 unsigned long flags;
1746 int q;
1747
1748
1749 if (!sdata)
1750 return;
1751
1752 ifmgd = &sdata->u.mgd;
1753
1754 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1755 return;
1756
1757 if (local->hw.conf.dynamic_ps_timeout > 0) {
1758
1759 if (drv_tx_frames_pending(local)) {
1760 mod_timer(&local->dynamic_ps_timer, jiffies +
1761 msecs_to_jiffies(
1762 local->hw.conf.dynamic_ps_timeout));
1763 return;
1764 }
1765
1766
1767
1768
1769
1770
1771 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1772 for (q = 0; q < local->hw.queues; q++) {
1773 if (local->queue_stop_reasons[q]) {
1774 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1775 flags);
1776 mod_timer(&local->dynamic_ps_timer, jiffies +
1777 msecs_to_jiffies(
1778 local->hw.conf.dynamic_ps_timeout));
1779 return;
1780 }
1781 }
1782 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1783 }
1784
1785 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1786 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1787 if (drv_tx_frames_pending(local)) {
1788 mod_timer(&local->dynamic_ps_timer, jiffies +
1789 msecs_to_jiffies(
1790 local->hw.conf.dynamic_ps_timeout));
1791 } else {
1792 ieee80211_send_nullfunc(local, sdata, true);
1793
1794 ieee80211_flush_queues(local, sdata, false);
1795 }
1796 }
1797
1798 if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
1799 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) ||
1800 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1801 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1802 local->hw.conf.flags |= IEEE80211_CONF_PS;
1803 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1804 }
1805}
1806
1807void ieee80211_dynamic_ps_timer(struct timer_list *t)
1808{
1809 struct ieee80211_local *local = from_timer(local, t, dynamic_ps_timer);
1810
1811 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
1812}
1813
1814void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1815{
1816 struct delayed_work *delayed_work = to_delayed_work(work);
1817 struct ieee80211_sub_if_data *sdata =
1818 container_of(delayed_work, struct ieee80211_sub_if_data,
1819 dfs_cac_timer_work);
1820 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
1821
1822 mutex_lock(&sdata->local->mtx);
1823 if (sdata->wdev.cac_started) {
1824 ieee80211_vif_release_channel(sdata);
1825 cfg80211_cac_event(sdata->dev, &chandef,
1826 NL80211_RADAR_CAC_FINISHED,
1827 GFP_KERNEL);
1828 }
1829 mutex_unlock(&sdata->local->mtx);
1830}
1831
1832static bool
1833__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1834{
1835 struct ieee80211_local *local = sdata->local;
1836 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1837 bool ret = false;
1838 int ac;
1839
1840 if (local->hw.queues < IEEE80211_NUM_ACS)
1841 return false;
1842
1843 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1844 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1845 int non_acm_ac;
1846 unsigned long now = jiffies;
1847
1848 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1849 tx_tspec->admitted_time &&
1850 time_after(now, tx_tspec->time_slice_start + HZ)) {
1851 tx_tspec->consumed_tx_time = 0;
1852 tx_tspec->time_slice_start = now;
1853
1854 if (tx_tspec->downgraded)
1855 tx_tspec->action =
1856 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1857 }
1858
1859 switch (tx_tspec->action) {
1860 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1861
1862 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1863 sdata_err(sdata,
1864 "failed to set TX queue parameters for queue %d\n",
1865 ac);
1866 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1867 tx_tspec->downgraded = false;
1868 ret = true;
1869 break;
1870 case TX_TSPEC_ACTION_DOWNGRADE:
1871 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1872 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1873 ret = true;
1874 break;
1875 }
1876
1877 for (non_acm_ac = ac + 1;
1878 non_acm_ac < IEEE80211_NUM_ACS;
1879 non_acm_ac++)
1880 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1881 break;
1882
1883
1884
1885
1886
1887
1888
1889 if (non_acm_ac >= IEEE80211_NUM_ACS)
1890 non_acm_ac = IEEE80211_AC_BK;
1891 if (drv_conf_tx(local, sdata, ac,
1892 &sdata->tx_conf[non_acm_ac]))
1893 sdata_err(sdata,
1894 "failed to set TX queue parameters for queue %d\n",
1895 ac);
1896 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1897 ret = true;
1898 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1899 tx_tspec->time_slice_start + HZ - now + 1);
1900 break;
1901 case TX_TSPEC_ACTION_NONE:
1902
1903 break;
1904 }
1905 }
1906
1907 return ret;
1908}
1909
1910void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1911{
1912 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1913 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1914}
1915
1916static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1917{
1918 struct ieee80211_sub_if_data *sdata;
1919
1920 sdata = container_of(work, struct ieee80211_sub_if_data,
1921 u.mgd.tx_tspec_wk.work);
1922 ieee80211_sta_handle_tspec_ac_params(sdata);
1923}
1924
1925
1926static bool
1927ieee80211_sta_wmm_params(struct ieee80211_local *local,
1928 struct ieee80211_sub_if_data *sdata,
1929 const u8 *wmm_param, size_t wmm_param_len,
1930 const struct ieee80211_mu_edca_param_set *mu_edca)
1931{
1932 struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
1933 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1934 size_t left;
1935 int count, mu_edca_count, ac;
1936 const u8 *pos;
1937 u8 uapsd_queues = 0;
1938
1939 if (!local->ops->conf_tx)
1940 return false;
1941
1942 if (local->hw.queues < IEEE80211_NUM_ACS)
1943 return false;
1944
1945 if (!wmm_param)
1946 return false;
1947
1948 if (wmm_param_len < 8 || wmm_param[5] != 1)
1949 return false;
1950
1951 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
1952 uapsd_queues = ifmgd->uapsd_queues;
1953
1954 count = wmm_param[6] & 0x0f;
1955
1956
1957
1958
1959 mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1;
1960 if (count == ifmgd->wmm_last_param_set &&
1961 mu_edca_count == ifmgd->mu_edca_last_param_set)
1962 return false;
1963 ifmgd->wmm_last_param_set = count;
1964 ifmgd->mu_edca_last_param_set = mu_edca_count;
1965
1966 pos = wmm_param + 8;
1967 left = wmm_param_len - 8;
1968
1969 memset(¶ms, 0, sizeof(params));
1970
1971 sdata->wmm_acm = 0;
1972 for (; left >= 4; left -= 4, pos += 4) {
1973 int aci = (pos[0] >> 5) & 0x03;
1974 int acm = (pos[0] >> 4) & 0x01;
1975 bool uapsd = false;
1976
1977 switch (aci) {
1978 case 1:
1979 ac = IEEE80211_AC_BK;
1980 if (acm)
1981 sdata->wmm_acm |= BIT(1) | BIT(2);
1982 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1983 uapsd = true;
1984 params[ac].mu_edca = !!mu_edca;
1985 if (mu_edca)
1986 params[ac].mu_edca_param_rec = mu_edca->ac_bk;
1987 break;
1988 case 2:
1989 ac = IEEE80211_AC_VI;
1990 if (acm)
1991 sdata->wmm_acm |= BIT(4) | BIT(5);
1992 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1993 uapsd = true;
1994 params[ac].mu_edca = !!mu_edca;
1995 if (mu_edca)
1996 params[ac].mu_edca_param_rec = mu_edca->ac_vi;
1997 break;
1998 case 3:
1999 ac = IEEE80211_AC_VO;
2000 if (acm)
2001 sdata->wmm_acm |= BIT(6) | BIT(7);
2002 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
2003 uapsd = true;
2004 params[ac].mu_edca = !!mu_edca;
2005 if (mu_edca)
2006 params[ac].mu_edca_param_rec = mu_edca->ac_vo;
2007 break;
2008 case 0:
2009 default:
2010 ac = IEEE80211_AC_BE;
2011 if (acm)
2012 sdata->wmm_acm |= BIT(0) | BIT(3);
2013 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
2014 uapsd = true;
2015 params[ac].mu_edca = !!mu_edca;
2016 if (mu_edca)
2017 params[ac].mu_edca_param_rec = mu_edca->ac_be;
2018 break;
2019 }
2020
2021 params[ac].aifs = pos[0] & 0x0f;
2022
2023 if (params[ac].aifs < 2) {
2024 sdata_info(sdata,
2025 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
2026 params[ac].aifs, aci);
2027 params[ac].aifs = 2;
2028 }
2029 params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
2030 params[ac].cw_min = ecw2cw(pos[1] & 0x0f);
2031 params[ac].txop = get_unaligned_le16(pos + 2);
2032 params[ac].acm = acm;
2033 params[ac].uapsd = uapsd;
2034
2035 if (params[ac].cw_min == 0 ||
2036 params[ac].cw_min > params[ac].cw_max) {
2037 sdata_info(sdata,
2038 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
2039 params[ac].cw_min, params[ac].cw_max, aci);
2040 return false;
2041 }
2042 ieee80211_regulatory_limit_wmm_params(sdata, ¶ms[ac], ac);
2043 }
2044
2045
2046 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2047 if (params[ac].cw_min == 0) {
2048 sdata_info(sdata,
2049 "AP has invalid WMM params (missing AC %d), using defaults\n",
2050 ac);
2051 return false;
2052 }
2053 }
2054
2055 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2056 mlme_dbg(sdata,
2057 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
2058 ac, params[ac].acm,
2059 params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
2060 params[ac].txop, params[ac].uapsd,
2061 ifmgd->tx_tspec[ac].downgraded);
2062 sdata->tx_conf[ac] = params[ac];
2063 if (!ifmgd->tx_tspec[ac].downgraded &&
2064 drv_conf_tx(local, sdata, ac, ¶ms[ac]))
2065 sdata_err(sdata,
2066 "failed to set TX queue parameters for AC %d\n",
2067 ac);
2068 }
2069
2070
2071 sdata->vif.bss_conf.qos = true;
2072 return true;
2073}
2074
2075static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2076{
2077 lockdep_assert_held(&sdata->local->mtx);
2078
2079 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
2080 ieee80211_run_deferred_scan(sdata->local);
2081}
2082
2083static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2084{
2085 mutex_lock(&sdata->local->mtx);
2086 __ieee80211_stop_poll(sdata);
2087 mutex_unlock(&sdata->local->mtx);
2088}
2089
2090static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
2091 u16 capab, bool erp_valid, u8 erp)
2092{
2093 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2094 struct ieee80211_supported_band *sband;
2095 u32 changed = 0;
2096 bool use_protection;
2097 bool use_short_preamble;
2098 bool use_short_slot;
2099
2100 sband = ieee80211_get_sband(sdata);
2101 if (!sband)
2102 return changed;
2103
2104 if (erp_valid) {
2105 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
2106 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
2107 } else {
2108 use_protection = false;
2109 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
2110 }
2111
2112 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
2113 if (sband->band == NL80211_BAND_5GHZ)
2114 use_short_slot = true;
2115
2116 if (use_protection != bss_conf->use_cts_prot) {
2117 bss_conf->use_cts_prot = use_protection;
2118 changed |= BSS_CHANGED_ERP_CTS_PROT;
2119 }
2120
2121 if (use_short_preamble != bss_conf->use_short_preamble) {
2122 bss_conf->use_short_preamble = use_short_preamble;
2123 changed |= BSS_CHANGED_ERP_PREAMBLE;
2124 }
2125
2126 if (use_short_slot != bss_conf->use_short_slot) {
2127 bss_conf->use_short_slot = use_short_slot;
2128 changed |= BSS_CHANGED_ERP_SLOT;
2129 }
2130
2131 return changed;
2132}
2133
2134static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
2135 struct cfg80211_bss *cbss,
2136 u32 bss_info_changed)
2137{
2138 struct ieee80211_bss *bss = (void *)cbss->priv;
2139 struct ieee80211_local *local = sdata->local;
2140 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2141
2142 bss_info_changed |= BSS_CHANGED_ASSOC;
2143 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
2144 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
2145
2146 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
2147 beacon_loss_count * bss_conf->beacon_int));
2148
2149 sdata->u.mgd.associated = cbss;
2150 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
2151
2152 ieee80211_check_rate_mask(sdata);
2153
2154 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
2155
2156 if (sdata->vif.p2p ||
2157 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
2158 const struct cfg80211_bss_ies *ies;
2159
2160 rcu_read_lock();
2161 ies = rcu_dereference(cbss->ies);
2162 if (ies) {
2163 int ret;
2164
2165 ret = cfg80211_get_p2p_attr(
2166 ies->data, ies->len,
2167 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
2168 (u8 *) &bss_conf->p2p_noa_attr,
2169 sizeof(bss_conf->p2p_noa_attr));
2170 if (ret >= 2) {
2171 sdata->u.mgd.p2p_noa_index =
2172 bss_conf->p2p_noa_attr.index;
2173 bss_info_changed |= BSS_CHANGED_P2P_PS;
2174 }
2175 }
2176 rcu_read_unlock();
2177 }
2178
2179
2180 ieee80211_stop_poll(sdata);
2181
2182 ieee80211_led_assoc(local, 1);
2183
2184 if (sdata->u.mgd.have_beacon) {
2185
2186
2187
2188
2189
2190
2191 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
2192 bss_conf->beacon_rate = bss->beacon_rate;
2193 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
2194 } else {
2195 bss_conf->beacon_rate = NULL;
2196 bss_conf->dtim_period = 0;
2197 }
2198
2199 bss_conf->assoc = 1;
2200
2201
2202 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
2203 bss_conf->cqm_rssi_thold)
2204 bss_info_changed |= BSS_CHANGED_CQM;
2205
2206
2207 if (bss_conf->arp_addr_cnt)
2208 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
2209
2210 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
2211
2212 mutex_lock(&local->iflist_mtx);
2213 ieee80211_recalc_ps(local);
2214 mutex_unlock(&local->iflist_mtx);
2215
2216 ieee80211_recalc_smps(sdata);
2217 ieee80211_recalc_ps_vif(sdata);
2218
2219 netif_carrier_on(sdata->dev);
2220}
2221
2222static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
2223 u16 stype, u16 reason, bool tx,
2224 u8 *frame_buf)
2225{
2226 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2227 struct ieee80211_local *local = sdata->local;
2228 u32 changed = 0;
2229
2230 sdata_assert_lock(sdata);
2231
2232 if (WARN_ON_ONCE(tx && !frame_buf))
2233 return;
2234
2235 if (WARN_ON(!ifmgd->associated))
2236 return;
2237
2238 ieee80211_stop_poll(sdata);
2239
2240 ifmgd->associated = NULL;
2241 netif_carrier_off(sdata->dev);
2242
2243
2244
2245
2246
2247
2248 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
2249 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
2250 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2251 }
2252 local->ps_sdata = NULL;
2253
2254
2255 ieee80211_recalc_ps_vif(sdata);
2256
2257
2258 synchronize_net();
2259
2260
2261
2262
2263
2264
2265
2266 if (tx)
2267 ieee80211_flush_queues(local, sdata, true);
2268
2269
2270 if (tx || frame_buf) {
2271
2272
2273
2274
2275
2276
2277 if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP) &&
2278 !ifmgd->have_beacon)
2279 drv_mgd_prepare_tx(sdata->local, sdata, 0);
2280
2281 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
2282 reason, tx, frame_buf);
2283 }
2284
2285
2286 if (tx)
2287 ieee80211_flush_queues(local, sdata, false);
2288
2289
2290 eth_zero_addr(ifmgd->bssid);
2291
2292
2293 sta_info_flush(sdata);
2294
2295
2296 changed |= ieee80211_reset_erp_info(sdata);
2297
2298 ieee80211_led_assoc(local, 0);
2299 changed |= BSS_CHANGED_ASSOC;
2300 sdata->vif.bss_conf.assoc = false;
2301
2302 ifmgd->p2p_noa_index = -1;
2303 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2304 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
2305
2306
2307 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2308 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
2309 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2310 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
2311
2312
2313 memset(sdata->vif.bss_conf.mu_group.membership, 0,
2314 sizeof(sdata->vif.bss_conf.mu_group.membership));
2315 memset(sdata->vif.bss_conf.mu_group.position, 0,
2316 sizeof(sdata->vif.bss_conf.mu_group.position));
2317 changed |= BSS_CHANGED_MU_GROUPS;
2318 sdata->vif.mu_mimo_owner = false;
2319
2320 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
2321
2322 del_timer_sync(&local->dynamic_ps_timer);
2323 cancel_work_sync(&local->dynamic_ps_enable_work);
2324
2325
2326 if (sdata->vif.bss_conf.arp_addr_cnt)
2327 changed |= BSS_CHANGED_ARP_FILTER;
2328
2329 sdata->vif.bss_conf.qos = false;
2330 changed |= BSS_CHANGED_QOS;
2331
2332
2333 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
2334 ieee80211_bss_info_change_notify(sdata, changed);
2335
2336
2337 ieee80211_set_wmm_default(sdata, false, false);
2338
2339 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2340 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2341 del_timer_sync(&sdata->u.mgd.timer);
2342 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2343
2344 sdata->vif.bss_conf.dtim_period = 0;
2345 sdata->vif.bss_conf.beacon_rate = NULL;
2346
2347 ifmgd->have_beacon = false;
2348
2349 ifmgd->flags = 0;
2350 mutex_lock(&local->mtx);
2351 ieee80211_vif_release_channel(sdata);
2352
2353 sdata->vif.csa_active = false;
2354 ifmgd->csa_waiting_bcn = false;
2355 ifmgd->csa_ignored_same_chan = false;
2356 if (sdata->csa_block_tx) {
2357 ieee80211_wake_vif_queues(local, sdata,
2358 IEEE80211_QUEUE_STOP_REASON_CSA);
2359 sdata->csa_block_tx = false;
2360 }
2361 mutex_unlock(&local->mtx);
2362
2363
2364 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2365 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2366
2367 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
2368}
2369
2370void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2371 struct ieee80211_hdr *hdr)
2372{
2373
2374
2375
2376
2377
2378
2379
2380
2381 if (is_multicast_ether_addr(hdr->addr1))
2382 return;
2383
2384 ieee80211_sta_reset_conn_monitor(sdata);
2385}
2386
2387static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2388{
2389 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2390 struct ieee80211_local *local = sdata->local;
2391
2392 mutex_lock(&local->mtx);
2393 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2394 goto out;
2395
2396 __ieee80211_stop_poll(sdata);
2397
2398 mutex_lock(&local->iflist_mtx);
2399 ieee80211_recalc_ps(local);
2400 mutex_unlock(&local->iflist_mtx);
2401
2402 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
2403 goto out;
2404
2405
2406
2407
2408
2409
2410 ieee80211_sta_reset_beacon_monitor(sdata);
2411
2412 mod_timer(&ifmgd->conn_mon_timer,
2413 round_jiffies_up(jiffies +
2414 IEEE80211_CONNECTION_IDLE_TIME));
2415out:
2416 mutex_unlock(&local->mtx);
2417}
2418
2419static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2420 struct ieee80211_hdr *hdr,
2421 u16 tx_time)
2422{
2423 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2424 u16 tid = ieee80211_get_tid(hdr);
2425 int ac = ieee80211_ac_from_tid(tid);
2426 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
2427 unsigned long now = jiffies;
2428
2429 if (likely(!tx_tspec->admitted_time))
2430 return;
2431
2432 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2433 tx_tspec->consumed_tx_time = 0;
2434 tx_tspec->time_slice_start = now;
2435
2436 if (tx_tspec->downgraded) {
2437 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2438 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2439 }
2440 }
2441
2442 if (tx_tspec->downgraded)
2443 return;
2444
2445 tx_tspec->consumed_tx_time += tx_time;
2446
2447 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2448 tx_tspec->downgraded = true;
2449 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2450 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2451 }
2452}
2453
2454void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2455 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
2456{
2457 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2458
2459 if (!ieee80211_is_data(hdr->frame_control))
2460 return;
2461
2462 if (ieee80211_is_nullfunc(hdr->frame_control) &&
2463 sdata->u.mgd.probe_send_count > 0) {
2464 if (ack)
2465 ieee80211_sta_reset_conn_monitor(sdata);
2466 else
2467 sdata->u.mgd.nullfunc_failed = true;
2468 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
2469 return;
2470 }
2471
2472 if (ack)
2473 ieee80211_sta_reset_conn_monitor(sdata);
2474}
2475
2476static void ieee80211_mlme_send_probe_req(struct ieee80211_sub_if_data *sdata,
2477 const u8 *src, const u8 *dst,
2478 const u8 *ssid, size_t ssid_len,
2479 struct ieee80211_channel *channel)
2480{
2481 struct sk_buff *skb;
2482
2483 skb = ieee80211_build_probe_req(sdata, src, dst, (u32)-1, channel,
2484 ssid, ssid_len, NULL, 0,
2485 IEEE80211_PROBE_FLAG_DIRECTED);
2486 if (skb)
2487 ieee80211_tx_skb(sdata, skb);
2488}
2489
2490static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2491{
2492 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2493 const u8 *ssid;
2494 u8 *dst = ifmgd->associated->bssid;
2495 u8 unicast_limit = max(1, max_probe_tries - 3);
2496 struct sta_info *sta;
2497
2498
2499
2500
2501
2502
2503 if (ifmgd->probe_send_count >= unicast_limit)
2504 dst = NULL;
2505
2506
2507
2508
2509
2510
2511
2512
2513 ifmgd->probe_send_count++;
2514
2515 if (dst) {
2516 mutex_lock(&sdata->local->sta_mtx);
2517 sta = sta_info_get(sdata, dst);
2518 if (!WARN_ON(!sta))
2519 ieee80211_check_fast_rx(sta);
2520 mutex_unlock(&sdata->local->sta_mtx);
2521 }
2522
2523 if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
2524 ifmgd->nullfunc_failed = false;
2525 ieee80211_send_nullfunc(sdata->local, sdata, false);
2526 } else {
2527 int ssid_len;
2528
2529 rcu_read_lock();
2530 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
2531 if (WARN_ON_ONCE(ssid == NULL))
2532 ssid_len = 0;
2533 else
2534 ssid_len = ssid[1];
2535
2536 ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst,
2537 ssid + 2, ssid_len,
2538 ifmgd->associated->channel);
2539 rcu_read_unlock();
2540 }
2541
2542 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
2543 run_again(sdata, ifmgd->probe_timeout);
2544}
2545
2546static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2547 bool beacon)
2548{
2549 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2550 bool already = false;
2551
2552 if (!ieee80211_sdata_running(sdata))
2553 return;
2554
2555 sdata_lock(sdata);
2556
2557 if (!ifmgd->associated)
2558 goto out;
2559
2560 mutex_lock(&sdata->local->mtx);
2561
2562 if (sdata->local->tmp_channel || sdata->local->scanning) {
2563 mutex_unlock(&sdata->local->mtx);
2564 goto out;
2565 }
2566
2567 if (beacon) {
2568 mlme_dbg_ratelimited(sdata,
2569 "detected beacon loss from AP (missed %d beacons) - probing\n",
2570 beacon_loss_count);
2571
2572 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
2573 }
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
2587 already = true;
2588
2589 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2590
2591 mutex_unlock(&sdata->local->mtx);
2592
2593 if (already)
2594 goto out;
2595
2596 mutex_lock(&sdata->local->iflist_mtx);
2597 ieee80211_recalc_ps(sdata->local);
2598 mutex_unlock(&sdata->local->iflist_mtx);
2599
2600 ifmgd->probe_send_count = 0;
2601 ieee80211_mgd_probe_ap_send(sdata);
2602 out:
2603 sdata_unlock(sdata);
2604}
2605
2606struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2607 struct ieee80211_vif *vif)
2608{
2609 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2610 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2611 struct cfg80211_bss *cbss;
2612 struct sk_buff *skb;
2613 const u8 *ssid;
2614 int ssid_len;
2615
2616 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2617 return NULL;
2618
2619 sdata_assert_lock(sdata);
2620
2621 if (ifmgd->associated)
2622 cbss = ifmgd->associated;
2623 else if (ifmgd->auth_data)
2624 cbss = ifmgd->auth_data->bss;
2625 else if (ifmgd->assoc_data)
2626 cbss = ifmgd->assoc_data->bss;
2627 else
2628 return NULL;
2629
2630 rcu_read_lock();
2631 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
2632 if (WARN_ON_ONCE(ssid == NULL))
2633 ssid_len = 0;
2634 else
2635 ssid_len = ssid[1];
2636
2637 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
2638 (u32) -1, cbss->channel,
2639 ssid + 2, ssid_len,
2640 NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED);
2641 rcu_read_unlock();
2642
2643 return skb;
2644}
2645EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2646
2647static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
2648 const u8 *buf, size_t len, bool tx,
2649 u16 reason)
2650{
2651 struct ieee80211_event event = {
2652 .type = MLME_EVENT,
2653 .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
2654 .u.mlme.reason = reason,
2655 };
2656
2657 if (tx)
2658 cfg80211_tx_mlme_mgmt(sdata->dev, buf, len);
2659 else
2660 cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
2661
2662 drv_event_callback(sdata->local, sdata, &event);
2663}
2664
2665static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
2666{
2667 struct ieee80211_local *local = sdata->local;
2668 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2669 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
2670 bool tx;
2671
2672 sdata_lock(sdata);
2673 if (!ifmgd->associated) {
2674 sdata_unlock(sdata);
2675 return;
2676 }
2677
2678 tx = !sdata->csa_block_tx;
2679
2680
2681
2682
2683 cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated);
2684
2685 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2686 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
2687 tx, frame_buf);
2688 mutex_lock(&local->mtx);
2689 sdata->vif.csa_active = false;
2690 ifmgd->csa_waiting_bcn = false;
2691 if (sdata->csa_block_tx) {
2692 ieee80211_wake_vif_queues(local, sdata,
2693 IEEE80211_QUEUE_STOP_REASON_CSA);
2694 sdata->csa_block_tx = false;
2695 }
2696 mutex_unlock(&local->mtx);
2697
2698 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx,
2699 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
2700
2701 sdata_unlock(sdata);
2702}
2703
2704static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
2705{
2706 struct ieee80211_sub_if_data *sdata =
2707 container_of(work, struct ieee80211_sub_if_data,
2708 u.mgd.beacon_connection_loss_work);
2709 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2710
2711 if (ifmgd->associated)
2712 ifmgd->beacon_loss_count++;
2713
2714 if (ifmgd->connection_loss) {
2715 sdata_info(sdata, "Connection to AP %pM lost\n",
2716 ifmgd->bssid);
2717 __ieee80211_disconnect(sdata);
2718 } else {
2719 ieee80211_mgd_probe_ap(sdata, true);
2720 }
2721}
2722
2723static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2724{
2725 struct ieee80211_sub_if_data *sdata =
2726 container_of(work, struct ieee80211_sub_if_data,
2727 u.mgd.csa_connection_drop_work);
2728
2729 __ieee80211_disconnect(sdata);
2730}
2731
2732void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2733{
2734 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2735 struct ieee80211_hw *hw = &sdata->local->hw;
2736
2737 trace_api_beacon_loss(sdata);
2738
2739 sdata->u.mgd.connection_loss = false;
2740 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2741}
2742EXPORT_SYMBOL(ieee80211_beacon_loss);
2743
2744void ieee80211_connection_loss(struct ieee80211_vif *vif)
2745{
2746 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2747 struct ieee80211_hw *hw = &sdata->local->hw;
2748
2749 trace_api_connection_loss(sdata);
2750
2751 sdata->u.mgd.connection_loss = true;
2752 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2753}
2754EXPORT_SYMBOL(ieee80211_connection_loss);
2755
2756
2757static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2758 bool assoc)
2759{
2760 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2761
2762 sdata_assert_lock(sdata);
2763
2764 if (!assoc) {
2765
2766
2767
2768
2769
2770 del_timer_sync(&sdata->u.mgd.timer);
2771 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2772
2773 eth_zero_addr(sdata->u.mgd.bssid);
2774 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2775 sdata->u.mgd.flags = 0;
2776 mutex_lock(&sdata->local->mtx);
2777 ieee80211_vif_release_channel(sdata);
2778 mutex_unlock(&sdata->local->mtx);
2779 }
2780
2781 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
2782 kfree(auth_data);
2783 sdata->u.mgd.auth_data = NULL;
2784}
2785
2786static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2787 bool assoc, bool abandon)
2788{
2789 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2790
2791 sdata_assert_lock(sdata);
2792
2793 if (!assoc) {
2794
2795
2796
2797
2798
2799 del_timer_sync(&sdata->u.mgd.timer);
2800 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2801
2802 eth_zero_addr(sdata->u.mgd.bssid);
2803 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2804 sdata->u.mgd.flags = 0;
2805 sdata->vif.mu_mimo_owner = false;
2806
2807 mutex_lock(&sdata->local->mtx);
2808 ieee80211_vif_release_channel(sdata);
2809 mutex_unlock(&sdata->local->mtx);
2810
2811 if (abandon)
2812 cfg80211_abandon_assoc(sdata->dev, assoc_data->bss);
2813 }
2814
2815 kfree(assoc_data);
2816 sdata->u.mgd.assoc_data = NULL;
2817}
2818
2819static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2820 struct ieee80211_mgmt *mgmt, size_t len)
2821{
2822 struct ieee80211_local *local = sdata->local;
2823 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2824 u8 *pos;
2825 struct ieee802_11_elems elems;
2826 u32 tx_flags = 0;
2827
2828 pos = mgmt->u.auth.variable;
2829 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
2830 mgmt->bssid, auth_data->bss->bssid);
2831 if (!elems.challenge)
2832 return;
2833 auth_data->expected_transaction = 4;
2834 drv_mgd_prepare_tx(sdata->local, sdata, 0);
2835 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
2836 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2837 IEEE80211_TX_INTFL_MLME_CONN_TX;
2838 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
2839 elems.challenge - 2, elems.challenge_len + 2,
2840 auth_data->bss->bssid, auth_data->bss->bssid,
2841 auth_data->key, auth_data->key_len,
2842 auth_data->key_idx, tx_flags);
2843}
2844
2845static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata,
2846 const u8 *bssid)
2847{
2848 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2849 struct sta_info *sta;
2850 bool result = true;
2851
2852 sdata_info(sdata, "authenticated\n");
2853 ifmgd->auth_data->done = true;
2854 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
2855 ifmgd->auth_data->timeout_started = true;
2856 run_again(sdata, ifmgd->auth_data->timeout);
2857
2858
2859 mutex_lock(&sdata->local->sta_mtx);
2860 sta = sta_info_get(sdata, bssid);
2861 if (!sta) {
2862 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2863 result = false;
2864 goto out;
2865 }
2866 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
2867 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
2868 result = false;
2869 goto out;
2870 }
2871
2872out:
2873 mutex_unlock(&sdata->local->sta_mtx);
2874 return result;
2875}
2876
2877static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2878 struct ieee80211_mgmt *mgmt, size_t len)
2879{
2880 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2881 u8 bssid[ETH_ALEN];
2882 u16 auth_alg, auth_transaction, status_code;
2883 struct ieee80211_event event = {
2884 .type = MLME_EVENT,
2885 .u.mlme.data = AUTH_EVENT,
2886 };
2887
2888 sdata_assert_lock(sdata);
2889
2890 if (len < 24 + 6)
2891 return;
2892
2893 if (!ifmgd->auth_data || ifmgd->auth_data->done)
2894 return;
2895
2896 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2897
2898 if (!ether_addr_equal(bssid, mgmt->bssid))
2899 return;
2900
2901 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2902 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2903 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2904
2905 if (auth_alg != ifmgd->auth_data->algorithm ||
2906 (auth_alg != WLAN_AUTH_SAE &&
2907 auth_transaction != ifmgd->auth_data->expected_transaction) ||
2908 (auth_alg == WLAN_AUTH_SAE &&
2909 (auth_transaction < ifmgd->auth_data->expected_transaction ||
2910 auth_transaction > 2))) {
2911 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2912 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2913 auth_transaction,
2914 ifmgd->auth_data->expected_transaction);
2915 return;
2916 }
2917
2918 if (status_code != WLAN_STATUS_SUCCESS) {
2919 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2920 mgmt->sa, status_code);
2921 ieee80211_destroy_auth_data(sdata, false);
2922 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2923 event.u.mlme.status = MLME_DENIED;
2924 event.u.mlme.reason = status_code;
2925 drv_event_callback(sdata->local, sdata, &event);
2926 return;
2927 }
2928
2929 switch (ifmgd->auth_data->algorithm) {
2930 case WLAN_AUTH_OPEN:
2931 case WLAN_AUTH_LEAP:
2932 case WLAN_AUTH_FT:
2933 case WLAN_AUTH_SAE:
2934 case WLAN_AUTH_FILS_SK:
2935 case WLAN_AUTH_FILS_SK_PFS:
2936 case WLAN_AUTH_FILS_PK:
2937 break;
2938 case WLAN_AUTH_SHARED_KEY:
2939 if (ifmgd->auth_data->expected_transaction != 4) {
2940 ieee80211_auth_challenge(sdata, mgmt, len);
2941
2942 return;
2943 }
2944 break;
2945 default:
2946 WARN_ONCE(1, "invalid auth alg %d",
2947 ifmgd->auth_data->algorithm);
2948 return;
2949 }
2950
2951 event.u.mlme.status = MLME_SUCCESS;
2952 drv_event_callback(sdata->local, sdata, &event);
2953 if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE ||
2954 (auth_transaction == 2 &&
2955 ifmgd->auth_data->expected_transaction == 2)) {
2956 if (!ieee80211_mark_sta_auth(sdata, bssid))
2957 goto out_err;
2958 } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2959 auth_transaction == 2) {
2960 sdata_info(sdata, "SAE peer confirmed\n");
2961 ifmgd->auth_data->peer_confirmed = true;
2962 }
2963
2964 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2965 return;
2966 out_err:
2967 mutex_unlock(&sdata->local->sta_mtx);
2968
2969}
2970
2971#define case_WLAN(type) \
2972 case WLAN_REASON_##type: return #type
2973
2974const char *ieee80211_get_reason_code_string(u16 reason_code)
2975{
2976 switch (reason_code) {
2977 case_WLAN(UNSPECIFIED);
2978 case_WLAN(PREV_AUTH_NOT_VALID);
2979 case_WLAN(DEAUTH_LEAVING);
2980 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
2981 case_WLAN(DISASSOC_AP_BUSY);
2982 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
2983 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
2984 case_WLAN(DISASSOC_STA_HAS_LEFT);
2985 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
2986 case_WLAN(DISASSOC_BAD_POWER);
2987 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
2988 case_WLAN(INVALID_IE);
2989 case_WLAN(MIC_FAILURE);
2990 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
2991 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
2992 case_WLAN(IE_DIFFERENT);
2993 case_WLAN(INVALID_GROUP_CIPHER);
2994 case_WLAN(INVALID_PAIRWISE_CIPHER);
2995 case_WLAN(INVALID_AKMP);
2996 case_WLAN(UNSUPP_RSN_VERSION);
2997 case_WLAN(INVALID_RSN_IE_CAP);
2998 case_WLAN(IEEE8021X_FAILED);
2999 case_WLAN(CIPHER_SUITE_REJECTED);
3000 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
3001 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
3002 case_WLAN(DISASSOC_LOW_ACK);
3003 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
3004 case_WLAN(QSTA_LEAVE_QBSS);
3005 case_WLAN(QSTA_NOT_USE);
3006 case_WLAN(QSTA_REQUIRE_SETUP);
3007 case_WLAN(QSTA_TIMEOUT);
3008 case_WLAN(QSTA_CIPHER_NOT_SUPP);
3009 case_WLAN(MESH_PEER_CANCELED);
3010 case_WLAN(MESH_MAX_PEERS);
3011 case_WLAN(MESH_CONFIG);
3012 case_WLAN(MESH_CLOSE);
3013 case_WLAN(MESH_MAX_RETRIES);
3014 case_WLAN(MESH_CONFIRM_TIMEOUT);
3015 case_WLAN(MESH_INVALID_GTK);
3016 case_WLAN(MESH_INCONSISTENT_PARAM);
3017 case_WLAN(MESH_INVALID_SECURITY);
3018 case_WLAN(MESH_PATH_ERROR);
3019 case_WLAN(MESH_PATH_NOFORWARD);
3020 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
3021 case_WLAN(MAC_EXISTS_IN_MBSS);
3022 case_WLAN(MESH_CHAN_REGULATORY);
3023 case_WLAN(MESH_CHAN);
3024 default: return "<unknown>";
3025 }
3026}
3027
3028static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
3029 struct ieee80211_mgmt *mgmt, size_t len)
3030{
3031 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3032 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
3033
3034 sdata_assert_lock(sdata);
3035
3036 if (len < 24 + 2)
3037 return;
3038
3039 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3040 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3041 return;
3042 }
3043
3044 if (ifmgd->associated &&
3045 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) {
3046 const u8 *bssid = ifmgd->associated->bssid;
3047
3048 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
3049 bssid, reason_code,
3050 ieee80211_get_reason_code_string(reason_code));
3051
3052 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3053
3054 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
3055 reason_code);
3056 return;
3057 }
3058
3059 if (ifmgd->assoc_data &&
3060 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
3061 const u8 *bssid = ifmgd->assoc_data->bss->bssid;
3062
3063 sdata_info(sdata,
3064 "deauthenticated from %pM while associating (Reason: %u=%s)\n",
3065 bssid, reason_code,
3066 ieee80211_get_reason_code_string(reason_code));
3067
3068 ieee80211_destroy_assoc_data(sdata, false, true);
3069
3070 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3071 return;
3072 }
3073}
3074
3075
3076static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
3077 struct ieee80211_mgmt *mgmt, size_t len)
3078{
3079 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3080 u16 reason_code;
3081
3082 sdata_assert_lock(sdata);
3083
3084 if (len < 24 + 2)
3085 return;
3086
3087 if (!ifmgd->associated ||
3088 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3089 return;
3090
3091 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
3092
3093 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3094 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3095 return;
3096 }
3097
3098 sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n",
3099 mgmt->sa, reason_code,
3100 ieee80211_get_reason_code_string(reason_code));
3101
3102 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3103
3104 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code);
3105}
3106
3107static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
3108 u8 *supp_rates, unsigned int supp_rates_len,
3109 u32 *rates, u32 *basic_rates,
3110 bool *have_higher_than_11mbit,
3111 int *min_rate, int *min_rate_index,
3112 int shift)
3113{
3114 int i, j;
3115
3116 for (i = 0; i < supp_rates_len; i++) {
3117 int rate = supp_rates[i] & 0x7f;
3118 bool is_basic = !!(supp_rates[i] & 0x80);
3119
3120 if ((rate * 5 * (1 << shift)) > 110)
3121 *have_higher_than_11mbit = true;
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131 if (supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY) ||
3132 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY))
3133 continue;
3134
3135 for (j = 0; j < sband->n_bitrates; j++) {
3136 struct ieee80211_rate *br;
3137 int brate;
3138
3139 br = &sband->bitrates[j];
3140
3141 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3142 if (brate == rate) {
3143 *rates |= BIT(j);
3144 if (is_basic)
3145 *basic_rates |= BIT(j);
3146 if ((rate * 5) < *min_rate) {
3147 *min_rate = rate * 5;
3148 *min_rate_index = j;
3149 }
3150 break;
3151 }
3152 }
3153 }
3154}
3155
3156static bool ieee80211_twt_req_supported(const struct sta_info *sta,
3157 const struct ieee802_11_elems *elems)
3158{
3159 if (elems->ext_capab_len < 10)
3160 return false;
3161
3162 if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT))
3163 return false;
3164
3165 return sta->sta.he_cap.he_cap_elem.mac_cap_info[0] &
3166 IEEE80211_HE_MAC_CAP0_TWT_RES;
3167}
3168
3169static int ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata,
3170 struct sta_info *sta,
3171 struct ieee802_11_elems *elems)
3172{
3173 bool twt = ieee80211_twt_req_supported(sta, elems);
3174
3175 if (sdata->vif.bss_conf.twt_requester != twt) {
3176 sdata->vif.bss_conf.twt_requester = twt;
3177 return BSS_CHANGED_TWT;
3178 }
3179 return 0;
3180}
3181
3182static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
3183 struct cfg80211_bss *cbss,
3184 struct ieee80211_mgmt *mgmt, size_t len)
3185{
3186 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3187 struct ieee80211_local *local = sdata->local;
3188 struct ieee80211_supported_band *sband;
3189 struct sta_info *sta;
3190 u8 *pos;
3191 u16 capab_info, aid;
3192 struct ieee802_11_elems elems;
3193 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3194 const struct cfg80211_bss_ies *bss_ies = NULL;
3195 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3196 u32 changed = 0;
3197 int err;
3198 bool ret;
3199
3200
3201
3202 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3203 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3204
3205
3206
3207
3208
3209 aid &= 0x7ff;
3210
3211 ifmgd->broken_ap = false;
3212
3213 if (aid == 0 || aid > IEEE80211_MAX_AID) {
3214 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
3215 aid);
3216 aid = 0;
3217 ifmgd->broken_ap = true;
3218 }
3219
3220 pos = mgmt->u.assoc_resp.variable;
3221 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
3222 mgmt->bssid, assoc_data->bss->bssid);
3223
3224 if (!elems.supp_rates) {
3225 sdata_info(sdata, "no SuppRates element in AssocResp\n");
3226 return false;
3227 }
3228
3229 ifmgd->aid = aid;
3230 ifmgd->tdls_chan_switch_prohibited =
3231 elems.ext_capab && elems.ext_capab_len >= 5 &&
3232 (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
3233
3234
3235
3236
3237
3238
3239
3240
3241 if ((assoc_data->wmm && !elems.wmm_param) ||
3242 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3243 (!elems.ht_cap_elem || !elems.ht_operation)) ||
3244 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3245 (!elems.vht_cap_elem || !elems.vht_operation))) {
3246 const struct cfg80211_bss_ies *ies;
3247 struct ieee802_11_elems bss_elems;
3248
3249 rcu_read_lock();
3250 ies = rcu_dereference(cbss->ies);
3251 if (ies)
3252 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
3253 GFP_ATOMIC);
3254 rcu_read_unlock();
3255 if (!bss_ies)
3256 return false;
3257
3258 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
3259 false, &bss_elems,
3260 mgmt->bssid,
3261 assoc_data->bss->bssid);
3262 if (assoc_data->wmm &&
3263 !elems.wmm_param && bss_elems.wmm_param) {
3264 elems.wmm_param = bss_elems.wmm_param;
3265 sdata_info(sdata,
3266 "AP bug: WMM param missing from AssocResp\n");
3267 }
3268
3269
3270
3271
3272
3273 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
3274 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
3275 elems.ht_cap_elem = bss_elems.ht_cap_elem;
3276 sdata_info(sdata,
3277 "AP bug: HT capability missing from AssocResp\n");
3278 }
3279 if (!elems.ht_operation && bss_elems.ht_operation &&
3280 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
3281 elems.ht_operation = bss_elems.ht_operation;
3282 sdata_info(sdata,
3283 "AP bug: HT operation missing from AssocResp\n");
3284 }
3285 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
3286 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
3287 elems.vht_cap_elem = bss_elems.vht_cap_elem;
3288 sdata_info(sdata,
3289 "AP bug: VHT capa missing from AssocResp\n");
3290 }
3291 if (!elems.vht_operation && bss_elems.vht_operation &&
3292 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
3293 elems.vht_operation = bss_elems.vht_operation;
3294 sdata_info(sdata,
3295 "AP bug: VHT operation missing from AssocResp\n");
3296 }
3297 }
3298
3299
3300
3301
3302
3303 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3304 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
3305 sdata_info(sdata,
3306 "HT AP is missing WMM params or HT capability/operation\n");
3307 ret = false;
3308 goto out;
3309 }
3310
3311 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3312 (!elems.vht_cap_elem || !elems.vht_operation)) {
3313 sdata_info(sdata,
3314 "VHT AP is missing VHT capability/operation\n");
3315 ret = false;
3316 goto out;
3317 }
3318
3319 mutex_lock(&sdata->local->sta_mtx);
3320
3321
3322
3323
3324 sta = sta_info_get(sdata, cbss->bssid);
3325 if (WARN_ON(!sta)) {
3326 mutex_unlock(&sdata->local->sta_mtx);
3327 ret = false;
3328 goto out;
3329 }
3330
3331 sband = ieee80211_get_sband(sdata);
3332 if (!sband) {
3333 mutex_unlock(&sdata->local->sta_mtx);
3334 ret = false;
3335 goto out;
3336 }
3337
3338 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3339 (!elems.he_cap || !elems.he_operation)) {
3340 mutex_unlock(&sdata->local->sta_mtx);
3341 sdata_info(sdata,
3342 "HE AP is missing HE capability/operation\n");
3343 ret = false;
3344 goto out;
3345 }
3346
3347
3348 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
3349 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
3350 elems.ht_cap_elem, sta);
3351
3352 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
3353 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
3354 elems.vht_cap_elem, sta);
3355
3356 if (elems.he_operation && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3357 elems.he_cap) {
3358 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
3359 elems.he_cap,
3360 elems.he_cap_len,
3361 sta);
3362
3363 bss_conf->he_support = sta->sta.he_cap.has_he;
3364 changed |= ieee80211_recalc_twt_req(sdata, sta, &elems);
3365 } else {
3366 bss_conf->he_support = false;
3367 bss_conf->twt_requester = false;
3368 }
3369
3370 if (bss_conf->he_support) {
3371 bss_conf->bss_color =
3372 le32_get_bits(elems.he_operation->he_oper_params,
3373 IEEE80211_HE_OPERATION_BSS_COLOR_MASK);
3374
3375 bss_conf->htc_trig_based_pkt_ext =
3376 le32_get_bits(elems.he_operation->he_oper_params,
3377 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
3378 bss_conf->frame_time_rts_th =
3379 le32_get_bits(elems.he_operation->he_oper_params,
3380 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3381
3382 bss_conf->multi_sta_back_32bit =
3383 sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3384 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP;
3385
3386 bss_conf->ack_enabled =
3387 sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3388 IEEE80211_HE_MAC_CAP2_ACK_EN;
3389
3390 bss_conf->uora_exists = !!elems.uora_element;
3391 if (elems.uora_element)
3392 bss_conf->uora_ocw_range = elems.uora_element[0];
3393
3394
3395 }
3396
3397 if (cbss->transmitted_bss) {
3398 bss_conf->nontransmitted = true;
3399 ether_addr_copy(bss_conf->transmitter_bssid,
3400 cbss->transmitted_bss->bssid);
3401 bss_conf->bssid_indicator = cbss->max_bssid_indicator;
3402 bss_conf->bssid_index = cbss->bssid_index;
3403 }
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417 if (elems.opmode_notif &&
3418 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
3419 u8 nss;
3420
3421 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
3422 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
3423 nss += 1;
3424 sta->sta.rx_nss = nss;
3425 }
3426
3427 rate_control_rate_init(sta);
3428
3429 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
3430 set_sta_flag(sta, WLAN_STA_MFP);
3431 sta->sta.mfp = true;
3432 } else {
3433 sta->sta.mfp = false;
3434 }
3435
3436 sta->sta.wme = elems.wmm_param && local->hw.queues >= IEEE80211_NUM_ACS;
3437
3438 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
3439 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
3440 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
3441 if (err) {
3442 sdata_info(sdata,
3443 "failed to move station %pM to desired state\n",
3444 sta->sta.addr);
3445 WARN_ON(__sta_info_destroy(sta));
3446 mutex_unlock(&sdata->local->sta_mtx);
3447 ret = false;
3448 goto out;
3449 }
3450
3451 mutex_unlock(&sdata->local->sta_mtx);
3452
3453
3454
3455
3456
3457
3458
3459 ifmgd->wmm_last_param_set = -1;
3460 ifmgd->mu_edca_last_param_set = -1;
3461
3462 if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
3463 ieee80211_set_wmm_default(sdata, false, false);
3464 } else if (!ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
3465 elems.wmm_param_len,
3466 elems.mu_edca_param_set)) {
3467
3468 ieee80211_set_wmm_default(sdata, false, true);
3469
3470
3471
3472
3473
3474
3475
3476 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
3477 }
3478 changed |= BSS_CHANGED_QOS;
3479
3480 if (elems.max_idle_period_ie) {
3481 bss_conf->max_idle_period =
3482 le16_to_cpu(elems.max_idle_period_ie->max_idle_period);
3483 bss_conf->protected_keep_alive =
3484 !!(elems.max_idle_period_ie->idle_options &
3485 WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE);
3486 changed |= BSS_CHANGED_KEEP_ALIVE;
3487 } else {
3488 bss_conf->max_idle_period = 0;
3489 bss_conf->protected_keep_alive = false;
3490 }
3491
3492
3493
3494 bss_conf->aid = aid;
3495 bss_conf->assoc_capability = capab_info;
3496 ieee80211_set_associated(sdata, cbss, changed);
3497
3498
3499
3500
3501
3502 if (ifmgd->use_4addr)
3503 ieee80211_send_4addr_nullfunc(local, sdata);
3504
3505
3506
3507
3508
3509 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
3510 ieee80211_sta_reset_beacon_monitor(sdata);
3511
3512 ret = true;
3513 out:
3514 kfree(bss_ies);
3515 return ret;
3516}
3517
3518static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3519 struct ieee80211_mgmt *mgmt,
3520 size_t len)
3521{
3522 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3523 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3524 u16 capab_info, status_code, aid;
3525 struct ieee802_11_elems elems;
3526 int ac, uapsd_queues = -1;
3527 u8 *pos;
3528 bool reassoc;
3529 struct cfg80211_bss *bss;
3530 struct ieee80211_event event = {
3531 .type = MLME_EVENT,
3532 .u.mlme.data = ASSOC_EVENT,
3533 };
3534
3535 sdata_assert_lock(sdata);
3536
3537 if (!assoc_data)
3538 return;
3539 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
3540 return;
3541
3542
3543
3544
3545
3546
3547 if (len < 24 + 6)
3548 return;
3549
3550 reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
3551 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3552 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3553 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3554
3555 sdata_info(sdata,
3556 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3557 reassoc ? "Rea" : "A", mgmt->sa,
3558 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
3559
3560 if (assoc_data->fils_kek_len &&
3561 fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
3562 return;
3563
3564 pos = mgmt->u.assoc_resp.variable;
3565 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
3566 mgmt->bssid, assoc_data->bss->bssid);
3567
3568 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
3569 elems.timeout_int &&
3570 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
3571 u32 tu, ms;
3572 tu = le32_to_cpu(elems.timeout_int->value);
3573 ms = tu * 1024 / 1000;
3574 sdata_info(sdata,
3575 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3576 mgmt->sa, tu, ms);
3577 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
3578 assoc_data->timeout_started = true;
3579 if (ms > IEEE80211_ASSOC_TIMEOUT)
3580 run_again(sdata, assoc_data->timeout);
3581 return;
3582 }
3583
3584 bss = assoc_data->bss;
3585
3586 if (status_code != WLAN_STATUS_SUCCESS) {
3587 sdata_info(sdata, "%pM denied association (code=%d)\n",
3588 mgmt->sa, status_code);
3589 ieee80211_destroy_assoc_data(sdata, false, false);
3590 event.u.mlme.status = MLME_DENIED;
3591 event.u.mlme.reason = status_code;
3592 drv_event_callback(sdata->local, sdata, &event);
3593 } else {
3594 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
3595
3596 ieee80211_destroy_assoc_data(sdata, false, false);
3597 cfg80211_assoc_timeout(sdata->dev, bss);
3598 return;
3599 }
3600 event.u.mlme.status = MLME_SUCCESS;
3601 drv_event_callback(sdata->local, sdata, &event);
3602 sdata_info(sdata, "associated\n");
3603
3604
3605
3606
3607
3608
3609 ieee80211_destroy_assoc_data(sdata, true, false);
3610
3611
3612 uapsd_queues = 0;
3613 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3614 if (sdata->tx_conf[ac].uapsd)
3615 uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
3616 }
3617
3618 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues,
3619 ifmgd->assoc_req_ies, ifmgd->assoc_req_ies_len);
3620}
3621
3622static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
3623 struct ieee80211_mgmt *mgmt, size_t len,
3624 struct ieee80211_rx_status *rx_status)
3625{
3626 struct ieee80211_local *local = sdata->local;
3627 struct ieee80211_bss *bss;
3628 struct ieee80211_channel *channel;
3629
3630 sdata_assert_lock(sdata);
3631
3632 channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
3633 if (!channel)
3634 return;
3635
3636 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, channel);
3637 if (bss) {
3638 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
3639 ieee80211_rx_bss_put(local, bss);
3640 }
3641}
3642
3643
3644static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
3645 struct sk_buff *skb)
3646{
3647 struct ieee80211_mgmt *mgmt = (void *)skb->data;
3648 struct ieee80211_if_managed *ifmgd;
3649 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
3650 size_t baselen, len = skb->len;
3651
3652 ifmgd = &sdata->u.mgd;
3653
3654 sdata_assert_lock(sdata);
3655
3656 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
3657 return;
3658
3659 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3660 if (baselen > len)
3661 return;
3662
3663 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
3664
3665 if (ifmgd->associated &&
3666 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3667 ieee80211_reset_ap_probe(sdata);
3668}
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685static const u64 care_about_ies =
3686 (1ULL << WLAN_EID_COUNTRY) |
3687 (1ULL << WLAN_EID_ERP_INFO) |
3688 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3689 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3690 (1ULL << WLAN_EID_HT_CAPABILITY) |
3691 (1ULL << WLAN_EID_HT_OPERATION) |
3692 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
3693
3694static void ieee80211_handle_beacon_sig(struct ieee80211_sub_if_data *sdata,
3695 struct ieee80211_if_managed *ifmgd,
3696 struct ieee80211_bss_conf *bss_conf,
3697 struct ieee80211_local *local,
3698 struct ieee80211_rx_status *rx_status)
3699{
3700
3701
3702 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3703 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3704 ewma_beacon_signal_init(&ifmgd->ave_beacon_signal);
3705 ifmgd->last_cqm_event_signal = 0;
3706 ifmgd->count_beacon_signal = 1;
3707 ifmgd->last_ave_beacon_signal = 0;
3708 } else {
3709 ifmgd->count_beacon_signal++;
3710 }
3711
3712 ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal);
3713
3714 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3715 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3716 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3717 int last_sig = ifmgd->last_ave_beacon_signal;
3718 struct ieee80211_event event = {
3719 .type = RSSI_EVENT,
3720 };
3721
3722
3723
3724
3725
3726 if (sig > ifmgd->rssi_max_thold &&
3727 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3728 ifmgd->last_ave_beacon_signal = sig;
3729 event.u.rssi.data = RSSI_EVENT_HIGH;
3730 drv_event_callback(local, sdata, &event);
3731 } else if (sig < ifmgd->rssi_min_thold &&
3732 (last_sig >= ifmgd->rssi_max_thold ||
3733 last_sig == 0)) {
3734 ifmgd->last_ave_beacon_signal = sig;
3735 event.u.rssi.data = RSSI_EVENT_LOW;
3736 drv_event_callback(local, sdata, &event);
3737 }
3738 }
3739
3740 if (bss_conf->cqm_rssi_thold &&
3741 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
3742 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
3743 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3744 int last_event = ifmgd->last_cqm_event_signal;
3745 int thold = bss_conf->cqm_rssi_thold;
3746 int hyst = bss_conf->cqm_rssi_hyst;
3747
3748 if (sig < thold &&
3749 (last_event == 0 || sig < last_event - hyst)) {
3750 ifmgd->last_cqm_event_signal = sig;
3751 ieee80211_cqm_rssi_notify(
3752 &sdata->vif,
3753 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3754 sig, GFP_KERNEL);
3755 } else if (sig > thold &&
3756 (last_event == 0 || sig > last_event + hyst)) {
3757 ifmgd->last_cqm_event_signal = sig;
3758 ieee80211_cqm_rssi_notify(
3759 &sdata->vif,
3760 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3761 sig, GFP_KERNEL);
3762 }
3763 }
3764
3765 if (bss_conf->cqm_rssi_low &&
3766 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3767 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3768 int last_event = ifmgd->last_cqm_event_signal;
3769 int low = bss_conf->cqm_rssi_low;
3770 int high = bss_conf->cqm_rssi_high;
3771
3772 if (sig < low &&
3773 (last_event == 0 || last_event >= low)) {
3774 ifmgd->last_cqm_event_signal = sig;
3775 ieee80211_cqm_rssi_notify(
3776 &sdata->vif,
3777 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3778 sig, GFP_KERNEL);
3779 } else if (sig > high &&
3780 (last_event == 0 || last_event <= high)) {
3781 ifmgd->last_cqm_event_signal = sig;
3782 ieee80211_cqm_rssi_notify(
3783 &sdata->vif,
3784 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3785 sig, GFP_KERNEL);
3786 }
3787 }
3788}
3789
3790static bool ieee80211_rx_our_beacon(const u8 *tx_bssid,
3791 struct cfg80211_bss *bss)
3792{
3793 if (ether_addr_equal(tx_bssid, bss->bssid))
3794 return true;
3795 if (!bss->transmitted_bss)
3796 return false;
3797 return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid);
3798}
3799
3800static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
3801 struct ieee80211_mgmt *mgmt, size_t len,
3802 struct ieee80211_rx_status *rx_status)
3803{
3804 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3805 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3806 size_t baselen;
3807 struct ieee802_11_elems elems;
3808 struct ieee80211_local *local = sdata->local;
3809 struct ieee80211_chanctx_conf *chanctx_conf;
3810 struct ieee80211_channel *chan;
3811 struct sta_info *sta;
3812 u32 changed = 0;
3813 bool erp_valid;
3814 u8 erp_value = 0;
3815 u32 ncrc;
3816 u8 *bssid;
3817 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
3818
3819 sdata_assert_lock(sdata);
3820
3821
3822 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
3823 if (baselen > len)
3824 return;
3825
3826 rcu_read_lock();
3827 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3828 if (!chanctx_conf) {
3829 rcu_read_unlock();
3830 return;
3831 }
3832
3833 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
3834 rcu_read_unlock();
3835 return;
3836 }
3837 chan = chanctx_conf->def.chan;
3838 rcu_read_unlock();
3839
3840 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
3841 ieee80211_rx_our_beacon(mgmt->bssid, ifmgd->assoc_data->bss)) {
3842 ieee802_11_parse_elems(mgmt->u.beacon.variable,
3843 len - baselen, false, &elems,
3844 mgmt->bssid,
3845 ifmgd->assoc_data->bss->bssid);
3846
3847 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
3848
3849 if (elems.dtim_period)
3850 ifmgd->dtim_period = elems.dtim_period;
3851 ifmgd->have_beacon = true;
3852 ifmgd->assoc_data->need_beacon = false;
3853 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
3854 sdata->vif.bss_conf.sync_tsf =
3855 le64_to_cpu(mgmt->u.beacon.timestamp);
3856 sdata->vif.bss_conf.sync_device_ts =
3857 rx_status->device_timestamp;
3858 sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
3859 }
3860
3861 if (elems.mbssid_config_ie)
3862 bss_conf->profile_periodicity =
3863 elems.mbssid_config_ie->profile_periodicity;
3864
3865 if (elems.ext_capab_len >= 11 &&
3866 (elems.ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
3867 bss_conf->ema_ap = true;
3868
3869
3870 ifmgd->assoc_data->timeout = jiffies;
3871 ifmgd->assoc_data->timeout_started = true;
3872 run_again(sdata, ifmgd->assoc_data->timeout);
3873 return;
3874 }
3875
3876 if (!ifmgd->associated ||
3877 !ieee80211_rx_our_beacon(mgmt->bssid, ifmgd->associated))
3878 return;
3879 bssid = ifmgd->associated->bssid;
3880
3881 if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
3882 ieee80211_handle_beacon_sig(sdata, ifmgd, bss_conf,
3883 local, rx_status);
3884
3885 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
3886 mlme_dbg_ratelimited(sdata,
3887 "cancelling AP probe due to a received beacon\n");
3888 ieee80211_reset_ap_probe(sdata);
3889 }
3890
3891
3892
3893
3894
3895 ieee80211_sta_reset_beacon_monitor(sdata);
3896
3897 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
3898 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
3899 len - baselen, false, &elems,
3900 care_about_ies, ncrc,
3901 mgmt->bssid, bssid);
3902
3903 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
3904 ieee80211_check_tim(elems.tim, elems.tim_len, ifmgd->aid)) {
3905 if (local->hw.conf.dynamic_ps_timeout > 0) {
3906 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3907 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3908 ieee80211_hw_config(local,
3909 IEEE80211_CONF_CHANGE_PS);
3910 }
3911 ieee80211_send_nullfunc(local, sdata, false);
3912 } else if (!local->pspolling && sdata->u.mgd.powersave) {
3913 local->pspolling = true;
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923 ieee80211_send_pspoll(local, sdata);
3924 }
3925 }
3926
3927 if (sdata->vif.p2p ||
3928 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
3929 struct ieee80211_p2p_noa_attr noa = {};
3930 int ret;
3931
3932 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3933 len - baselen,
3934 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
3935 (u8 *) &noa, sizeof(noa));
3936 if (ret >= 2) {
3937 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3938
3939 sdata->u.mgd.p2p_noa_index = noa.index;
3940 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3941 changed |= BSS_CHANGED_P2P_PS;
3942
3943
3944
3945
3946 ifmgd->beacon_crc_valid = false;
3947 }
3948 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3949
3950 sdata->u.mgd.p2p_noa_index = -1;
3951 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
3952 changed |= BSS_CHANGED_P2P_PS;
3953 ifmgd->beacon_crc_valid = false;
3954 }
3955 }
3956
3957 if (ifmgd->csa_waiting_bcn)
3958 ieee80211_chswitch_post_beacon(sdata);
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
3969 sdata->vif.bss_conf.sync_tsf =
3970 le64_to_cpu(mgmt->u.beacon.timestamp);
3971 sdata->vif.bss_conf.sync_device_ts =
3972 rx_status->device_timestamp;
3973 sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
3974 }
3975
3976 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
3977 return;
3978 ifmgd->beacon_crc = ncrc;
3979 ifmgd->beacon_crc_valid = true;
3980
3981 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
3982
3983 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
3984 rx_status->device_timestamp,
3985 &elems, true);
3986
3987 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
3988 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
3989 elems.wmm_param_len,
3990 elems.mu_edca_param_set))
3991 changed |= BSS_CHANGED_QOS;
3992
3993
3994
3995
3996
3997 if (!ifmgd->have_beacon) {
3998
3999 bss_conf->dtim_period = elems.dtim_period ?: 1;
4000
4001 changed |= BSS_CHANGED_BEACON_INFO;
4002 ifmgd->have_beacon = true;
4003
4004 mutex_lock(&local->iflist_mtx);
4005 ieee80211_recalc_ps(local);
4006 mutex_unlock(&local->iflist_mtx);
4007
4008 ieee80211_recalc_ps_vif(sdata);
4009 }
4010
4011 if (elems.erp_info) {
4012 erp_valid = true;
4013 erp_value = elems.erp_info[0];
4014 } else {
4015 erp_valid = false;
4016 }
4017 changed |= ieee80211_handle_bss_capability(sdata,
4018 le16_to_cpu(mgmt->u.beacon.capab_info),
4019 erp_valid, erp_value);
4020
4021 mutex_lock(&local->sta_mtx);
4022 sta = sta_info_get(sdata, bssid);
4023
4024 changed |= ieee80211_recalc_twt_req(sdata, sta, &elems);
4025
4026 if (ieee80211_config_bw(sdata, sta,
4027 elems.ht_cap_elem, elems.ht_operation,
4028 elems.vht_operation, elems.he_operation,
4029 bssid, &changed)) {
4030 mutex_unlock(&local->sta_mtx);
4031 sdata_info(sdata,
4032 "failed to follow AP %pM bandwidth change, disconnect\n",
4033 bssid);
4034 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4035 WLAN_REASON_DEAUTH_LEAVING,
4036 true, deauth_buf);
4037 ieee80211_report_disconnect(sdata, deauth_buf,
4038 sizeof(deauth_buf), true,
4039 WLAN_REASON_DEAUTH_LEAVING);
4040 return;
4041 }
4042
4043 if (sta && elems.opmode_notif)
4044 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
4045 rx_status->band);
4046 mutex_unlock(&local->sta_mtx);
4047
4048 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
4049 elems.country_elem,
4050 elems.country_elem_len,
4051 elems.pwr_constr_elem,
4052 elems.cisco_dtpc_elem);
4053
4054 ieee80211_bss_info_change_notify(sdata, changed);
4055}
4056
4057void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
4058 struct sk_buff *skb)
4059{
4060 struct ieee80211_rx_status *rx_status;
4061 struct ieee80211_mgmt *mgmt;
4062 u16 fc;
4063 struct ieee802_11_elems elems;
4064 int ies_len;
4065
4066 rx_status = (struct ieee80211_rx_status *) skb->cb;
4067 mgmt = (struct ieee80211_mgmt *) skb->data;
4068 fc = le16_to_cpu(mgmt->frame_control);
4069
4070 sdata_lock(sdata);
4071
4072 switch (fc & IEEE80211_FCTL_STYPE) {
4073 case IEEE80211_STYPE_BEACON:
4074 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
4075 break;
4076 case IEEE80211_STYPE_PROBE_RESP:
4077 ieee80211_rx_mgmt_probe_resp(sdata, skb);
4078 break;
4079 case IEEE80211_STYPE_AUTH:
4080 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
4081 break;
4082 case IEEE80211_STYPE_DEAUTH:
4083 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
4084 break;
4085 case IEEE80211_STYPE_DISASSOC:
4086 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
4087 break;
4088 case IEEE80211_STYPE_ASSOC_RESP:
4089 case IEEE80211_STYPE_REASSOC_RESP:
4090 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
4091 break;
4092 case IEEE80211_STYPE_ACTION:
4093 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
4094 ies_len = skb->len -
4095 offsetof(struct ieee80211_mgmt,
4096 u.action.u.chan_switch.variable);
4097
4098 if (ies_len < 0)
4099 break;
4100
4101
4102 ieee802_11_parse_elems(
4103 mgmt->u.action.u.chan_switch.variable,
4104 ies_len, true, &elems, mgmt->bssid, NULL);
4105
4106 if (elems.parse_error)
4107 break;
4108
4109 ieee80211_sta_process_chanswitch(sdata,
4110 rx_status->mactime,
4111 rx_status->device_timestamp,
4112 &elems, false);
4113 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
4114 ies_len = skb->len -
4115 offsetof(struct ieee80211_mgmt,
4116 u.action.u.ext_chan_switch.variable);
4117
4118 if (ies_len < 0)
4119 break;
4120
4121
4122
4123
4124
4125 ieee802_11_parse_elems(
4126 mgmt->u.action.u.ext_chan_switch.variable,
4127 ies_len, true, &elems, mgmt->bssid, NULL);
4128
4129 if (elems.parse_error)
4130 break;
4131
4132
4133 elems.ext_chansw_ie =
4134 &mgmt->u.action.u.ext_chan_switch.data;
4135
4136 ieee80211_sta_process_chanswitch(sdata,
4137 rx_status->mactime,
4138 rx_status->device_timestamp,
4139 &elems, false);
4140 }
4141 break;
4142 }
4143 sdata_unlock(sdata);
4144}
4145
4146static void ieee80211_sta_timer(struct timer_list *t)
4147{
4148 struct ieee80211_sub_if_data *sdata =
4149 from_timer(sdata, t, u.mgd.timer);
4150
4151 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
4152}
4153
4154static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
4155 u8 *bssid, u8 reason, bool tx)
4156{
4157 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4158
4159 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
4160 tx, frame_buf);
4161
4162 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
4163 reason);
4164}
4165
4166static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
4167{
4168 struct ieee80211_local *local = sdata->local;
4169 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4170 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
4171 u32 tx_flags = 0;
4172 u16 trans = 1;
4173 u16 status = 0;
4174 u16 prepare_tx_duration = 0;
4175
4176 sdata_assert_lock(sdata);
4177
4178 if (WARN_ON_ONCE(!auth_data))
4179 return -EINVAL;
4180
4181 auth_data->tries++;
4182
4183 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
4184 sdata_info(sdata, "authentication with %pM timed out\n",
4185 auth_data->bss->bssid);
4186
4187
4188
4189
4190
4191 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
4192
4193 return -ETIMEDOUT;
4194 }
4195
4196 if (auth_data->algorithm == WLAN_AUTH_SAE)
4197 prepare_tx_duration =
4198 jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE);
4199
4200 drv_mgd_prepare_tx(local, sdata, prepare_tx_duration);
4201
4202 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
4203 auth_data->bss->bssid, auth_data->tries,
4204 IEEE80211_AUTH_MAX_TRIES);
4205
4206 auth_data->expected_transaction = 2;
4207
4208 if (auth_data->algorithm == WLAN_AUTH_SAE) {
4209 trans = auth_data->sae_trans;
4210 status = auth_data->sae_status;
4211 auth_data->expected_transaction = trans;
4212 }
4213
4214 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4215 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
4216 IEEE80211_TX_INTFL_MLME_CONN_TX;
4217
4218 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
4219 auth_data->data, auth_data->data_len,
4220 auth_data->bss->bssid,
4221 auth_data->bss->bssid, NULL, 0, 0,
4222 tx_flags);
4223
4224 if (tx_flags == 0) {
4225 if (auth_data->algorithm == WLAN_AUTH_SAE)
4226 auth_data->timeout = jiffies +
4227 IEEE80211_AUTH_TIMEOUT_SAE;
4228 else
4229 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
4230 } else {
4231 auth_data->timeout =
4232 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
4233 }
4234
4235 auth_data->timeout_started = true;
4236 run_again(sdata, auth_data->timeout);
4237
4238 return 0;
4239}
4240
4241static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
4242{
4243 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
4244 struct ieee80211_local *local = sdata->local;
4245
4246 sdata_assert_lock(sdata);
4247
4248 assoc_data->tries++;
4249 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
4250 sdata_info(sdata, "association with %pM timed out\n",
4251 assoc_data->bss->bssid);
4252
4253
4254
4255
4256
4257 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
4258
4259 return -ETIMEDOUT;
4260 }
4261
4262 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
4263 assoc_data->bss->bssid, assoc_data->tries,
4264 IEEE80211_ASSOC_MAX_TRIES);
4265 ieee80211_send_assoc(sdata);
4266
4267 if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
4268 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
4269 assoc_data->timeout_started = true;
4270 run_again(sdata, assoc_data->timeout);
4271 } else {
4272 assoc_data->timeout =
4273 round_jiffies_up(jiffies +
4274 IEEE80211_ASSOC_TIMEOUT_LONG);
4275 assoc_data->timeout_started = true;
4276 run_again(sdata, assoc_data->timeout);
4277 }
4278
4279 return 0;
4280}
4281
4282void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
4283 __le16 fc, bool acked)
4284{
4285 struct ieee80211_local *local = sdata->local;
4286
4287 sdata->u.mgd.status_fc = fc;
4288 sdata->u.mgd.status_acked = acked;
4289 sdata->u.mgd.status_received = true;
4290
4291 ieee80211_queue_work(&local->hw, &sdata->work);
4292}
4293
4294void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
4295{
4296 struct ieee80211_local *local = sdata->local;
4297 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4298
4299 sdata_lock(sdata);
4300
4301 if (ifmgd->status_received) {
4302 __le16 fc = ifmgd->status_fc;
4303 bool status_acked = ifmgd->status_acked;
4304
4305 ifmgd->status_received = false;
4306 if (ifmgd->auth_data && ieee80211_is_auth(fc)) {
4307 if (status_acked) {
4308 if (ifmgd->auth_data->algorithm ==
4309 WLAN_AUTH_SAE)
4310 ifmgd->auth_data->timeout =
4311 jiffies +
4312 IEEE80211_AUTH_TIMEOUT_SAE;
4313 else
4314 ifmgd->auth_data->timeout =
4315 jiffies +
4316 IEEE80211_AUTH_TIMEOUT_SHORT;
4317 run_again(sdata, ifmgd->auth_data->timeout);
4318 } else {
4319 ifmgd->auth_data->timeout = jiffies - 1;
4320 }
4321 ifmgd->auth_data->timeout_started = true;
4322 } else if (ifmgd->assoc_data &&
4323 (ieee80211_is_assoc_req(fc) ||
4324 ieee80211_is_reassoc_req(fc))) {
4325 if (status_acked) {
4326 ifmgd->assoc_data->timeout =
4327 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
4328 run_again(sdata, ifmgd->assoc_data->timeout);
4329 } else {
4330 ifmgd->assoc_data->timeout = jiffies - 1;
4331 }
4332 ifmgd->assoc_data->timeout_started = true;
4333 }
4334 }
4335
4336 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
4337 time_after(jiffies, ifmgd->auth_data->timeout)) {
4338 if (ifmgd->auth_data->done) {
4339
4340
4341
4342
4343 ieee80211_destroy_auth_data(sdata, false);
4344 } else if (ieee80211_auth(sdata)) {
4345 u8 bssid[ETH_ALEN];
4346 struct ieee80211_event event = {
4347 .type = MLME_EVENT,
4348 .u.mlme.data = AUTH_EVENT,
4349 .u.mlme.status = MLME_TIMEOUT,
4350 };
4351
4352 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
4353
4354 ieee80211_destroy_auth_data(sdata, false);
4355
4356 cfg80211_auth_timeout(sdata->dev, bssid);
4357 drv_event_callback(sdata->local, sdata, &event);
4358 }
4359 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
4360 run_again(sdata, ifmgd->auth_data->timeout);
4361
4362 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
4363 time_after(jiffies, ifmgd->assoc_data->timeout)) {
4364 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
4365 ieee80211_do_assoc(sdata)) {
4366 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
4367 struct ieee80211_event event = {
4368 .type = MLME_EVENT,
4369 .u.mlme.data = ASSOC_EVENT,
4370 .u.mlme.status = MLME_TIMEOUT,
4371 };
4372
4373 ieee80211_destroy_assoc_data(sdata, false, false);
4374 cfg80211_assoc_timeout(sdata->dev, bss);
4375 drv_event_callback(sdata->local, sdata, &event);
4376 }
4377 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
4378 run_again(sdata, ifmgd->assoc_data->timeout);
4379
4380 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
4381 ifmgd->associated) {
4382 u8 bssid[ETH_ALEN];
4383 int max_tries;
4384
4385 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4386
4387 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4388 max_tries = max_nullfunc_tries;
4389 else
4390 max_tries = max_probe_tries;
4391
4392
4393 if (!ifmgd->probe_send_count)
4394 ieee80211_reset_ap_probe(sdata);
4395 else if (ifmgd->nullfunc_failed) {
4396 if (ifmgd->probe_send_count < max_tries) {
4397 mlme_dbg(sdata,
4398 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
4399 bssid, ifmgd->probe_send_count,
4400 max_tries);
4401 ieee80211_mgd_probe_ap_send(sdata);
4402 } else {
4403 mlme_dbg(sdata,
4404 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
4405 bssid);
4406 ieee80211_sta_connection_lost(sdata, bssid,
4407 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
4408 false);
4409 }
4410 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
4411 run_again(sdata, ifmgd->probe_timeout);
4412 else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
4413 mlme_dbg(sdata,
4414 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
4415 bssid, probe_wait_ms);
4416 ieee80211_sta_connection_lost(sdata, bssid,
4417 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4418 } else if (ifmgd->probe_send_count < max_tries) {
4419 mlme_dbg(sdata,
4420 "No probe response from AP %pM after %dms, try %d/%i\n",
4421 bssid, probe_wait_ms,
4422 ifmgd->probe_send_count, max_tries);
4423 ieee80211_mgd_probe_ap_send(sdata);
4424 } else {
4425
4426
4427
4428
4429 mlme_dbg(sdata,
4430 "No probe response from AP %pM after %dms, disconnecting.\n",
4431 bssid, probe_wait_ms);
4432
4433 ieee80211_sta_connection_lost(sdata, bssid,
4434 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4435 }
4436 }
4437
4438 sdata_unlock(sdata);
4439}
4440
4441static void ieee80211_sta_bcn_mon_timer(struct timer_list *t)
4442{
4443 struct ieee80211_sub_if_data *sdata =
4444 from_timer(sdata, t, u.mgd.bcn_mon_timer);
4445 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4446
4447 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4448 return;
4449
4450 sdata->u.mgd.connection_loss = false;
4451 ieee80211_queue_work(&sdata->local->hw,
4452 &sdata->u.mgd.beacon_connection_loss_work);
4453}
4454
4455static void ieee80211_sta_conn_mon_timer(struct timer_list *t)
4456{
4457 struct ieee80211_sub_if_data *sdata =
4458 from_timer(sdata, t, u.mgd.conn_mon_timer);
4459 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4460 struct ieee80211_local *local = sdata->local;
4461
4462 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4463 return;
4464
4465 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
4466}
4467
4468static void ieee80211_sta_monitor_work(struct work_struct *work)
4469{
4470 struct ieee80211_sub_if_data *sdata =
4471 container_of(work, struct ieee80211_sub_if_data,
4472 u.mgd.monitor_work);
4473
4474 ieee80211_mgd_probe_ap(sdata, false);
4475}
4476
4477static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
4478{
4479 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
4480 __ieee80211_stop_poll(sdata);
4481
4482
4483 if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
4484 ieee80211_queue_work(&sdata->local->hw,
4485 &sdata->u.mgd.monitor_work);
4486 }
4487}
4488
4489#ifdef CONFIG_PM
4490void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
4491{
4492 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4493 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4494
4495 sdata_lock(sdata);
4496
4497 if (ifmgd->auth_data || ifmgd->assoc_data) {
4498 const u8 *bssid = ifmgd->auth_data ?
4499 ifmgd->auth_data->bss->bssid :
4500 ifmgd->assoc_data->bss->bssid;
4501
4502
4503
4504
4505
4506
4507 ieee80211_send_deauth_disassoc(sdata, bssid,
4508 IEEE80211_STYPE_DEAUTH,
4509 WLAN_REASON_DEAUTH_LEAVING,
4510 false, frame_buf);
4511 if (ifmgd->assoc_data)
4512 ieee80211_destroy_assoc_data(sdata, false, true);
4513 if (ifmgd->auth_data)
4514 ieee80211_destroy_auth_data(sdata, false);
4515 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4516 IEEE80211_DEAUTH_FRAME_LEN);
4517 }
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536 if (ifmgd->associated && !sdata->local->wowlan) {
4537 u8 bssid[ETH_ALEN];
4538 struct cfg80211_deauth_request req = {
4539 .reason_code = WLAN_REASON_DEAUTH_LEAVING,
4540 .bssid = bssid,
4541 };
4542
4543 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4544 ieee80211_mgd_deauth(sdata, &req);
4545 }
4546
4547 sdata_unlock(sdata);
4548}
4549
4550void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
4551{
4552 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4553
4554 sdata_lock(sdata);
4555 if (!ifmgd->associated) {
4556 sdata_unlock(sdata);
4557 return;
4558 }
4559
4560 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
4561 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
4562 mlme_dbg(sdata, "driver requested disconnect after resume\n");
4563 ieee80211_sta_connection_lost(sdata,
4564 ifmgd->associated->bssid,
4565 WLAN_REASON_UNSPECIFIED,
4566 true);
4567 sdata_unlock(sdata);
4568 return;
4569 }
4570 sdata_unlock(sdata);
4571}
4572#endif
4573
4574
4575void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
4576{
4577 struct ieee80211_if_managed *ifmgd;
4578
4579 ifmgd = &sdata->u.mgd;
4580 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
4581 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
4582 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4583 ieee80211_beacon_connection_loss_work);
4584 INIT_WORK(&ifmgd->csa_connection_drop_work,
4585 ieee80211_csa_connection_drop_work);
4586 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
4587 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4588 ieee80211_tdls_peer_del_work);
4589 timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0);
4590 timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0);
4591 timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0);
4592 timer_setup(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 0);
4593 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4594 ieee80211_sta_handle_tspec_ac_params_wk);
4595
4596 ifmgd->flags = 0;
4597 ifmgd->powersave = sdata->wdev.ps;
4598 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4599 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
4600 ifmgd->p2p_noa_index = -1;
4601
4602 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
4603 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4604 else
4605 ifmgd->req_smps = IEEE80211_SMPS_OFF;
4606
4607
4608 spin_lock_init(&ifmgd->teardown_lock);
4609 ifmgd->teardown_skb = NULL;
4610 ifmgd->orig_teardown_skb = NULL;
4611}
4612
4613
4614void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
4615{
4616 struct ieee80211_sub_if_data *sdata;
4617
4618
4619 rcu_read_lock();
4620 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4621 if (ieee80211_sdata_running(sdata))
4622 ieee80211_restart_sta_timer(sdata);
4623 }
4624 rcu_read_unlock();
4625}
4626
4627static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4628 struct cfg80211_bss *cbss)
4629{
4630 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4631 const u8 *ht_cap_ie, *vht_cap_ie;
4632 const struct ieee80211_ht_cap *ht_cap;
4633 const struct ieee80211_vht_cap *vht_cap;
4634 u8 chains = 1;
4635
4636 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4637 return chains;
4638
4639 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4640 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4641 ht_cap = (void *)(ht_cap_ie + 2);
4642 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4643
4644
4645
4646
4647 }
4648
4649 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4650 return chains;
4651
4652 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4653 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4654 u8 nss;
4655 u16 tx_mcs_map;
4656
4657 vht_cap = (void *)(vht_cap_ie + 2);
4658 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4659 for (nss = 8; nss > 0; nss--) {
4660 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4661 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4662 break;
4663 }
4664
4665 chains = max(chains, nss);
4666 }
4667
4668 return chains;
4669}
4670
4671static bool
4672ieee80211_verify_sta_he_mcs_support(struct ieee80211_supported_band *sband,
4673 const struct ieee80211_he_operation *he_op)
4674{
4675 const struct ieee80211_sta_he_cap *sta_he_cap =
4676 ieee80211_get_he_sta_cap(sband);
4677 u16 ap_min_req_set;
4678 int i;
4679
4680 if (!sta_he_cap || !he_op)
4681 return false;
4682
4683 ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
4684
4685
4686 for (i = 0; i < 3; i++) {
4687 const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp =
4688 &sta_he_cap->he_mcs_nss_supp;
4689 u16 sta_mcs_map_rx =
4690 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]);
4691 u16 sta_mcs_map_tx =
4692 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]);
4693 u8 nss;
4694 bool verified = true;
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705 for (nss = 8; nss > 0; nss--) {
4706 u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3;
4707 u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3;
4708 u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
4709
4710 if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
4711 continue;
4712
4713
4714
4715
4716
4717 if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
4718 sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
4719 (ap_val > sta_rx_val) || (ap_val > sta_tx_val)) {
4720 verified = false;
4721 break;
4722 }
4723 }
4724
4725 if (verified)
4726 return true;
4727 }
4728
4729
4730 return false;
4731}
4732
4733static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
4734 struct cfg80211_bss *cbss)
4735{
4736 struct ieee80211_local *local = sdata->local;
4737 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4738 const struct ieee80211_ht_cap *ht_cap = NULL;
4739 const struct ieee80211_ht_operation *ht_oper = NULL;
4740 const struct ieee80211_vht_operation *vht_oper = NULL;
4741 const struct ieee80211_he_operation *he_oper = NULL;
4742 struct ieee80211_supported_band *sband;
4743 struct cfg80211_chan_def chandef;
4744 int ret;
4745 u32 i;
4746 bool have_80mhz;
4747
4748 sband = local->hw.wiphy->bands[cbss->channel->band];
4749
4750 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
4751 IEEE80211_STA_DISABLE_80P80MHZ |
4752 IEEE80211_STA_DISABLE_160MHZ);
4753
4754 rcu_read_lock();
4755
4756 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
4757 sband->ht_cap.ht_supported) {
4758 const u8 *ht_oper_ie, *ht_cap_ie;
4759
4760 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
4761 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
4762 ht_oper = (void *)(ht_oper_ie + 2);
4763
4764 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4765 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
4766 ht_cap = (void *)(ht_cap_ie + 2);
4767
4768 if (!ht_cap) {
4769 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4770 ht_oper = NULL;
4771 }
4772 }
4773
4774 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
4775 sband->vht_cap.vht_supported) {
4776 const u8 *vht_oper_ie, *vht_cap;
4777
4778 vht_oper_ie = ieee80211_bss_get_ie(cbss,
4779 WLAN_EID_VHT_OPERATION);
4780 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
4781 vht_oper = (void *)(vht_oper_ie + 2);
4782 if (vht_oper && !ht_oper) {
4783 vht_oper = NULL;
4784 sdata_info(sdata,
4785 "AP advertised VHT without HT, disabling both\n");
4786 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4787 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4788 }
4789
4790 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4791 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
4792 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4793 vht_oper = NULL;
4794 }
4795 }
4796
4797 if (!ieee80211_get_he_sta_cap(sband))
4798 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4799
4800 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) {
4801 const struct cfg80211_bss_ies *ies;
4802 const u8 *he_oper_ie;
4803
4804 ies = rcu_dereference(cbss->ies);
4805 he_oper_ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION,
4806 ies->data, ies->len);
4807 if (he_oper_ie &&
4808 he_oper_ie[1] == ieee80211_he_oper_size(&he_oper_ie[3]))
4809 he_oper = (void *)(he_oper_ie + 3);
4810 else
4811 he_oper = NULL;
4812
4813 if (!ieee80211_verify_sta_he_mcs_support(sband, he_oper))
4814 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4815 }
4816
4817
4818 have_80mhz = false;
4819 for (i = 0; i < sband->n_channels; i++) {
4820 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
4821 IEEE80211_CHAN_NO_80MHZ))
4822 continue;
4823
4824 have_80mhz = true;
4825 break;
4826 }
4827
4828 if (!have_80mhz)
4829 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4830
4831 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
4832 cbss->channel,
4833 ht_oper, vht_oper, he_oper,
4834 &chandef, false);
4835
4836 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
4837 local->rx_chains);
4838
4839 rcu_read_unlock();
4840
4841
4842 sdata->smps_mode = IEEE80211_SMPS_OFF;
4843
4844 mutex_lock(&local->mtx);
4845
4846
4847
4848
4849
4850 ret = ieee80211_vif_use_channel(sdata, &chandef,
4851 IEEE80211_CHANCTX_SHARED);
4852
4853
4854 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
4855 chandef.width == NL80211_CHAN_WIDTH_10)
4856 goto out;
4857
4858 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
4859 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
4860 ret = ieee80211_vif_use_channel(sdata, &chandef,
4861 IEEE80211_CHANCTX_SHARED);
4862 }
4863 out:
4864 mutex_unlock(&local->mtx);
4865 return ret;
4866}
4867
4868static bool ieee80211_get_dtim(const struct cfg80211_bss_ies *ies,
4869 u8 *dtim_count, u8 *dtim_period)
4870{
4871 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len);
4872 const u8 *idx_ie = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, ies->data,
4873 ies->len);
4874 const struct ieee80211_tim_ie *tim = NULL;
4875 const struct ieee80211_bssid_index *idx;
4876 bool valid = tim_ie && tim_ie[1] >= 2;
4877
4878 if (valid)
4879 tim = (void *)(tim_ie + 2);
4880
4881 if (dtim_count)
4882 *dtim_count = valid ? tim->dtim_count : 0;
4883
4884 if (dtim_period)
4885 *dtim_period = valid ? tim->dtim_period : 0;
4886
4887
4888 if (!idx_ie || idx_ie[1] < 3)
4889 return valid;
4890
4891 idx = (void *)(idx_ie + 2);
4892
4893 if (dtim_count)
4894 *dtim_count = idx->dtim_count;
4895
4896 if (dtim_period)
4897 *dtim_period = idx->dtim_period;
4898
4899 return true;
4900}
4901
4902static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
4903 struct cfg80211_bss *cbss, bool assoc,
4904 bool override)
4905{
4906 struct ieee80211_local *local = sdata->local;
4907 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4908 struct ieee80211_bss *bss = (void *)cbss->priv;
4909 struct sta_info *new_sta = NULL;
4910 struct ieee80211_supported_band *sband;
4911 bool have_sta = false;
4912 int err;
4913
4914 sband = local->hw.wiphy->bands[cbss->channel->band];
4915
4916 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
4917 return -EINVAL;
4918
4919
4920 if (local->in_reconfig)
4921 return -EBUSY;
4922
4923 if (assoc) {
4924 rcu_read_lock();
4925 have_sta = sta_info_get(sdata, cbss->bssid);
4926 rcu_read_unlock();
4927 }
4928
4929 if (!have_sta) {
4930 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
4931 if (!new_sta)
4932 return -ENOMEM;
4933 }
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948 if (new_sta) {
4949 u32 rates = 0, basic_rates = 0;
4950 bool have_higher_than_11mbit;
4951 int min_rate = INT_MAX, min_rate_index = -1;
4952 const struct cfg80211_bss_ies *ies;
4953 int shift = ieee80211_vif_get_shift(&sdata->vif);
4954
4955 ieee80211_get_rates(sband, bss->supp_rates,
4956 bss->supp_rates_len,
4957 &rates, &basic_rates,
4958 &have_higher_than_11mbit,
4959 &min_rate, &min_rate_index,
4960 shift);
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970 if (!basic_rates && min_rate_index >= 0) {
4971 sdata_info(sdata,
4972 "No basic rates, using min rate instead\n");
4973 basic_rates = BIT(min_rate_index);
4974 }
4975
4976 if (rates)
4977 new_sta->sta.supp_rates[cbss->channel->band] = rates;
4978 else
4979 sdata_info(sdata,
4980 "No rates found, keeping mandatory only\n");
4981
4982 sdata->vif.bss_conf.basic_rates = basic_rates;
4983
4984
4985 if (cbss->channel->band == NL80211_BAND_2GHZ &&
4986 have_higher_than_11mbit)
4987 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
4988 else
4989 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
4990
4991 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
4992
4993
4994 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
4995 rcu_read_lock();
4996 ies = rcu_dereference(cbss->beacon_ies);
4997 if (ies) {
4998 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4999 sdata->vif.bss_conf.sync_device_ts =
5000 bss->device_ts_beacon;
5001
5002 ieee80211_get_dtim(ies,
5003 &sdata->vif.bss_conf.sync_dtim_count,
5004 NULL);
5005 } else if (!ieee80211_hw_check(&sdata->local->hw,
5006 TIMING_BEACON_ONLY)) {
5007 ies = rcu_dereference(cbss->proberesp_ies);
5008
5009 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5010 sdata->vif.bss_conf.sync_device_ts =
5011 bss->device_ts_presp;
5012 sdata->vif.bss_conf.sync_dtim_count = 0;
5013 } else {
5014 sdata->vif.bss_conf.sync_tsf = 0;
5015 sdata->vif.bss_conf.sync_device_ts = 0;
5016 sdata->vif.bss_conf.sync_dtim_count = 0;
5017 }
5018 rcu_read_unlock();
5019 }
5020
5021 if (new_sta || override) {
5022 err = ieee80211_prep_channel(sdata, cbss);
5023 if (err) {
5024 if (new_sta)
5025 sta_info_free(local, new_sta);
5026 return -EINVAL;
5027 }
5028 }
5029
5030 if (new_sta) {
5031
5032
5033
5034
5035 ieee80211_bss_info_change_notify(sdata,
5036 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
5037 BSS_CHANGED_BEACON_INT);
5038
5039 if (assoc)
5040 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
5041
5042 err = sta_info_insert(new_sta);
5043 new_sta = NULL;
5044 if (err) {
5045 sdata_info(sdata,
5046 "failed to insert STA entry for the AP (error %d)\n",
5047 err);
5048 return err;
5049 }
5050 } else
5051 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
5052
5053
5054 if (local->scanning)
5055 ieee80211_scan_cancel(local);
5056
5057 return 0;
5058}
5059
5060
5061int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
5062 struct cfg80211_auth_request *req)
5063{
5064 struct ieee80211_local *local = sdata->local;
5065 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5066 struct ieee80211_mgd_auth_data *auth_data;
5067 u16 auth_alg;
5068 int err;
5069 bool cont_auth;
5070
5071
5072
5073 switch (req->auth_type) {
5074 case NL80211_AUTHTYPE_OPEN_SYSTEM:
5075 auth_alg = WLAN_AUTH_OPEN;
5076 break;
5077 case NL80211_AUTHTYPE_SHARED_KEY:
5078 if (fips_enabled)
5079 return -EOPNOTSUPP;
5080 auth_alg = WLAN_AUTH_SHARED_KEY;
5081 break;
5082 case NL80211_AUTHTYPE_FT:
5083 auth_alg = WLAN_AUTH_FT;
5084 break;
5085 case NL80211_AUTHTYPE_NETWORK_EAP:
5086 auth_alg = WLAN_AUTH_LEAP;
5087 break;
5088 case NL80211_AUTHTYPE_SAE:
5089 auth_alg = WLAN_AUTH_SAE;
5090 break;
5091 case NL80211_AUTHTYPE_FILS_SK:
5092 auth_alg = WLAN_AUTH_FILS_SK;
5093 break;
5094 case NL80211_AUTHTYPE_FILS_SK_PFS:
5095 auth_alg = WLAN_AUTH_FILS_SK_PFS;
5096 break;
5097 case NL80211_AUTHTYPE_FILS_PK:
5098 auth_alg = WLAN_AUTH_FILS_PK;
5099 break;
5100 default:
5101 return -EOPNOTSUPP;
5102 }
5103
5104 if (ifmgd->assoc_data)
5105 return -EBUSY;
5106
5107 auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len +
5108 req->ie_len, GFP_KERNEL);
5109 if (!auth_data)
5110 return -ENOMEM;
5111
5112 auth_data->bss = req->bss;
5113
5114 if (req->auth_data_len >= 4) {
5115 if (req->auth_type == NL80211_AUTHTYPE_SAE) {
5116 __le16 *pos = (__le16 *) req->auth_data;
5117
5118 auth_data->sae_trans = le16_to_cpu(pos[0]);
5119 auth_data->sae_status = le16_to_cpu(pos[1]);
5120 }
5121 memcpy(auth_data->data, req->auth_data + 4,
5122 req->auth_data_len - 4);
5123 auth_data->data_len += req->auth_data_len - 4;
5124 }
5125
5126
5127
5128
5129
5130
5131 cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss;
5132
5133 if (req->ie && req->ie_len) {
5134 memcpy(&auth_data->data[auth_data->data_len],
5135 req->ie, req->ie_len);
5136 auth_data->data_len += req->ie_len;
5137 }
5138
5139 if (req->key && req->key_len) {
5140 auth_data->key_len = req->key_len;
5141 auth_data->key_idx = req->key_idx;
5142 memcpy(auth_data->key, req->key, req->key_len);
5143 }
5144
5145 auth_data->algorithm = auth_alg;
5146
5147
5148
5149 if (ifmgd->auth_data) {
5150 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) {
5151 auth_data->peer_confirmed =
5152 ifmgd->auth_data->peer_confirmed;
5153 }
5154 ieee80211_destroy_auth_data(sdata, cont_auth);
5155 }
5156
5157
5158 ifmgd->auth_data = auth_data;
5159
5160
5161
5162
5163
5164
5165 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE &&
5166 auth_data->peer_confirmed && auth_data->sae_trans == 2)
5167 ieee80211_mark_sta_auth(sdata, req->bss->bssid);
5168
5169 if (ifmgd->associated) {
5170 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5171
5172 sdata_info(sdata,
5173 "disconnect from AP %pM for new auth to %pM\n",
5174 ifmgd->associated->bssid, req->bss->bssid);
5175 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5176 WLAN_REASON_UNSPECIFIED,
5177 false, frame_buf);
5178
5179 ieee80211_report_disconnect(sdata, frame_buf,
5180 sizeof(frame_buf), true,
5181 WLAN_REASON_UNSPECIFIED);
5182 }
5183
5184 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
5185
5186 err = ieee80211_prep_connection(sdata, req->bss, cont_auth, false);
5187 if (err)
5188 goto err_clear;
5189
5190 err = ieee80211_auth(sdata);
5191 if (err) {
5192 sta_info_destroy_addr(sdata, req->bss->bssid);
5193 goto err_clear;
5194 }
5195
5196
5197 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
5198 return 0;
5199
5200 err_clear:
5201 eth_zero_addr(ifmgd->bssid);
5202 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
5203 ifmgd->auth_data = NULL;
5204 mutex_lock(&sdata->local->mtx);
5205 ieee80211_vif_release_channel(sdata);
5206 mutex_unlock(&sdata->local->mtx);
5207 kfree(auth_data);
5208 return err;
5209}
5210
5211int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
5212 struct cfg80211_assoc_request *req)
5213{
5214 struct ieee80211_local *local = sdata->local;
5215 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5216 struct ieee80211_bss *bss = (void *)req->bss->priv;
5217 struct ieee80211_mgd_assoc_data *assoc_data;
5218 const struct cfg80211_bss_ies *beacon_ies;
5219 struct ieee80211_supported_band *sband;
5220 const u8 *ssidie, *ht_ie, *vht_ie;
5221 int i, err;
5222 bool override = false;
5223
5224 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
5225 if (!assoc_data)
5226 return -ENOMEM;
5227
5228 rcu_read_lock();
5229 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
5230 if (!ssidie) {
5231 rcu_read_unlock();
5232 kfree(assoc_data);
5233 return -EINVAL;
5234 }
5235 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
5236 assoc_data->ssid_len = ssidie[1];
5237 rcu_read_unlock();
5238
5239 if (ifmgd->associated) {
5240 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5241
5242 sdata_info(sdata,
5243 "disconnect from AP %pM for new assoc to %pM\n",
5244 ifmgd->associated->bssid, req->bss->bssid);
5245 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5246 WLAN_REASON_UNSPECIFIED,
5247 false, frame_buf);
5248
5249 ieee80211_report_disconnect(sdata, frame_buf,
5250 sizeof(frame_buf), true,
5251 WLAN_REASON_UNSPECIFIED);
5252 }
5253
5254 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
5255 err = -EBUSY;
5256 goto err_free;
5257 }
5258
5259 if (ifmgd->assoc_data) {
5260 err = -EBUSY;
5261 goto err_free;
5262 }
5263
5264 if (ifmgd->auth_data) {
5265 bool match;
5266
5267
5268 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
5269 ieee80211_destroy_auth_data(sdata, match);
5270 }
5271
5272
5273
5274 ifmgd->beacon_crc_valid = false;
5275
5276 assoc_data->wmm = bss->wmm_used &&
5277 (local->hw.queues >= IEEE80211_NUM_ACS);
5278
5279
5280
5281
5282
5283
5284
5285
5286 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
5287 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
5288 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
5289 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
5290 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5291 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5292 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5293 netdev_info(sdata->dev,
5294 "disabling HE/HT/VHT due to WEP/TKIP use\n");
5295 }
5296 }
5297
5298
5299 sband = local->hw.wiphy->bands[req->bss->channel->band];
5300 if (!sband->ht_cap.ht_supported ||
5301 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
5302 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
5303 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5304 if (!bss->wmm_used &&
5305 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
5306 netdev_info(sdata->dev,
5307 "disabling HT as WMM/QoS is not supported by the AP\n");
5308 }
5309
5310
5311 if (!sband->vht_cap.vht_supported ||
5312 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
5313 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
5314 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5315 if (!bss->wmm_used &&
5316 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
5317 netdev_info(sdata->dev,
5318 "disabling VHT as WMM/QoS is not supported by the AP\n");
5319 }
5320
5321 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
5322 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
5323 sizeof(ifmgd->ht_capa_mask));
5324
5325 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
5326 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
5327 sizeof(ifmgd->vht_capa_mask));
5328
5329 if (req->ie && req->ie_len) {
5330 memcpy(assoc_data->ie, req->ie, req->ie_len);
5331 assoc_data->ie_len = req->ie_len;
5332 }
5333
5334 if (req->fils_kek) {
5335
5336 if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) {
5337 err = -EINVAL;
5338 goto err_free;
5339 }
5340 memcpy(assoc_data->fils_kek, req->fils_kek,
5341 req->fils_kek_len);
5342 assoc_data->fils_kek_len = req->fils_kek_len;
5343 }
5344
5345 if (req->fils_nonces)
5346 memcpy(assoc_data->fils_nonces, req->fils_nonces,
5347 2 * FILS_NONCE_LEN);
5348
5349 assoc_data->bss = req->bss;
5350
5351 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
5352 if (ifmgd->powersave)
5353 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
5354 else
5355 sdata->smps_mode = IEEE80211_SMPS_OFF;
5356 } else
5357 sdata->smps_mode = ifmgd->req_smps;
5358
5359 assoc_data->capability = req->bss->capability;
5360 assoc_data->supp_rates = bss->supp_rates;
5361 assoc_data->supp_rates_len = bss->supp_rates_len;
5362
5363 rcu_read_lock();
5364 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
5365 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
5366 assoc_data->ap_ht_param =
5367 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
5368 else
5369 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5370 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
5371 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
5372 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
5373 sizeof(struct ieee80211_vht_cap));
5374 else
5375 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5376 rcu_read_unlock();
5377
5378 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
5379 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
5380 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
5381 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
5382
5383 if (bss->wmm_used && bss->uapsd_supported &&
5384 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
5385 assoc_data->uapsd = true;
5386 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
5387 } else {
5388 assoc_data->uapsd = false;
5389 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
5390 }
5391
5392 if (req->prev_bssid)
5393 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
5394
5395 if (req->use_mfp) {
5396 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
5397 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
5398 } else {
5399 ifmgd->mfp = IEEE80211_MFP_DISABLED;
5400 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
5401 }
5402
5403 if (req->flags & ASSOC_REQ_USE_RRM)
5404 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
5405 else
5406 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
5407
5408 if (req->crypto.control_port)
5409 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
5410 else
5411 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
5412
5413 sdata->control_port_protocol = req->crypto.control_port_ethertype;
5414 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
5415 sdata->control_port_over_nl80211 =
5416 req->crypto.control_port_over_nl80211;
5417 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
5418 sdata->vif.type);
5419
5420
5421
5422 ifmgd->assoc_data = assoc_data;
5423 ifmgd->dtim_period = 0;
5424 ifmgd->have_beacon = false;
5425
5426
5427 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
5428 struct ieee80211_sta_ht_cap sta_ht_cap;
5429
5430 if (req->flags & ASSOC_REQ_DISABLE_HT)
5431 override = true;
5432
5433 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
5434 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
5435
5436
5437 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) &&
5438 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
5439 !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
5440 override = true;
5441
5442 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
5443 req->flags & ASSOC_REQ_DISABLE_VHT)
5444 override = true;
5445 }
5446
5447 if (req->flags & ASSOC_REQ_DISABLE_HT) {
5448 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5449 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5450 }
5451
5452 if (req->flags & ASSOC_REQ_DISABLE_VHT)
5453 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5454
5455 err = ieee80211_prep_connection(sdata, req->bss, true, override);
5456 if (err)
5457 goto err_clear;
5458
5459 rcu_read_lock();
5460 beacon_ies = rcu_dereference(req->bss->beacon_ies);
5461
5462 if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) &&
5463 !beacon_ies) {
5464
5465
5466
5467
5468 sdata_info(sdata, "waiting for beacon from %pM\n",
5469 ifmgd->bssid);
5470 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
5471 assoc_data->timeout_started = true;
5472 assoc_data->need_beacon = true;
5473 } else if (beacon_ies) {
5474 const u8 *ie;
5475 u8 dtim_count = 0;
5476
5477 ieee80211_get_dtim(beacon_ies, &dtim_count,
5478 &ifmgd->dtim_period);
5479
5480 ifmgd->have_beacon = true;
5481 assoc_data->timeout = jiffies;
5482 assoc_data->timeout_started = true;
5483
5484 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
5485 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
5486 sdata->vif.bss_conf.sync_device_ts =
5487 bss->device_ts_beacon;
5488 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
5489 }
5490
5491 ie = cfg80211_find_ext_ie(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION,
5492 beacon_ies->data, beacon_ies->len);
5493 if (ie && ie[1] >= 3)
5494 sdata->vif.bss_conf.profile_periodicity = ie[4];
5495
5496 ie = cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY,
5497 beacon_ies->data, beacon_ies->len);
5498 if (ie && ie[1] >= 11 &&
5499 (ie[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
5500 sdata->vif.bss_conf.ema_ap = true;
5501 } else {
5502 assoc_data->timeout = jiffies;
5503 assoc_data->timeout_started = true;
5504 }
5505 rcu_read_unlock();
5506
5507 run_again(sdata, assoc_data->timeout);
5508
5509 if (bss->corrupt_data) {
5510 char *corrupt_type = "data";
5511 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
5512 if (bss->corrupt_data &
5513 IEEE80211_BSS_CORRUPT_PROBE_RESP)
5514 corrupt_type = "beacon and probe response";
5515 else
5516 corrupt_type = "beacon";
5517 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
5518 corrupt_type = "probe response";
5519 sdata_info(sdata, "associating with AP with corrupt %s\n",
5520 corrupt_type);
5521 }
5522
5523 return 0;
5524 err_clear:
5525 eth_zero_addr(ifmgd->bssid);
5526 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
5527 ifmgd->assoc_data = NULL;
5528 err_free:
5529 kfree(assoc_data);
5530 return err;
5531}
5532
5533int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
5534 struct cfg80211_deauth_request *req)
5535{
5536 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5537 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5538 bool tx = !req->local_state_change;
5539
5540 if (ifmgd->auth_data &&
5541 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
5542 sdata_info(sdata,
5543 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
5544 req->bssid, req->reason_code,
5545 ieee80211_get_reason_code_string(req->reason_code));
5546
5547 drv_mgd_prepare_tx(sdata->local, sdata, 0);
5548 ieee80211_send_deauth_disassoc(sdata, req->bssid,
5549 IEEE80211_STYPE_DEAUTH,
5550 req->reason_code, tx,
5551 frame_buf);
5552 ieee80211_destroy_auth_data(sdata, false);
5553 ieee80211_report_disconnect(sdata, frame_buf,
5554 sizeof(frame_buf), true,
5555 req->reason_code);
5556
5557 return 0;
5558 }
5559
5560 if (ifmgd->assoc_data &&
5561 ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
5562 sdata_info(sdata,
5563 "aborting association with %pM by local choice (Reason: %u=%s)\n",
5564 req->bssid, req->reason_code,
5565 ieee80211_get_reason_code_string(req->reason_code));
5566
5567 drv_mgd_prepare_tx(sdata->local, sdata, 0);
5568 ieee80211_send_deauth_disassoc(sdata, req->bssid,
5569 IEEE80211_STYPE_DEAUTH,
5570 req->reason_code, tx,
5571 frame_buf);
5572 ieee80211_destroy_assoc_data(sdata, false, true);
5573 ieee80211_report_disconnect(sdata, frame_buf,
5574 sizeof(frame_buf), true,
5575 req->reason_code);
5576 return 0;
5577 }
5578
5579 if (ifmgd->associated &&
5580 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
5581 sdata_info(sdata,
5582 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
5583 req->bssid, req->reason_code,
5584 ieee80211_get_reason_code_string(req->reason_code));
5585
5586 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5587 req->reason_code, tx, frame_buf);
5588 ieee80211_report_disconnect(sdata, frame_buf,
5589 sizeof(frame_buf), true,
5590 req->reason_code);
5591 return 0;
5592 }
5593
5594 return -ENOTCONN;
5595}
5596
5597int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
5598 struct cfg80211_disassoc_request *req)
5599{
5600 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5601 u8 bssid[ETH_ALEN];
5602 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5603
5604
5605
5606
5607
5608
5609
5610 if (ifmgd->associated != req->bss)
5611 return -ENOLINK;
5612
5613 sdata_info(sdata,
5614 "disassociating from %pM by local choice (Reason: %u=%s)\n",
5615 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
5616
5617 memcpy(bssid, req->bss->bssid, ETH_ALEN);
5618 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
5619 req->reason_code, !req->local_state_change,
5620 frame_buf);
5621
5622 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
5623 req->reason_code);
5624
5625 return 0;
5626}
5627
5628void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
5629{
5630 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5631
5632
5633
5634
5635
5636
5637 cancel_work_sync(&ifmgd->monitor_work);
5638 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
5639 cancel_work_sync(&ifmgd->request_smps_work);
5640 cancel_work_sync(&ifmgd->csa_connection_drop_work);
5641 cancel_work_sync(&ifmgd->chswitch_work);
5642 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
5643
5644 sdata_lock(sdata);
5645 if (ifmgd->assoc_data) {
5646 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
5647 ieee80211_destroy_assoc_data(sdata, false, false);
5648 cfg80211_assoc_timeout(sdata->dev, bss);
5649 }
5650 if (ifmgd->auth_data)
5651 ieee80211_destroy_auth_data(sdata, false);
5652 spin_lock_bh(&ifmgd->teardown_lock);
5653 if (ifmgd->teardown_skb) {
5654 kfree_skb(ifmgd->teardown_skb);
5655 ifmgd->teardown_skb = NULL;
5656 ifmgd->orig_teardown_skb = NULL;
5657 }
5658 kfree(ifmgd->assoc_req_ies);
5659 ifmgd->assoc_req_ies = NULL;
5660 ifmgd->assoc_req_ies_len = 0;
5661 spin_unlock_bh(&ifmgd->teardown_lock);
5662 del_timer_sync(&ifmgd->timer);
5663 sdata_unlock(sdata);
5664}
5665
5666void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
5667 enum nl80211_cqm_rssi_threshold_event rssi_event,
5668 s32 rssi_level,
5669 gfp_t gfp)
5670{
5671 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5672
5673 trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level);
5674
5675 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp);
5676}
5677EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
5678
5679void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
5680{
5681 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5682
5683 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
5684
5685 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
5686}
5687EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);
5688