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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_AUTH_WAIT_SAE_RETRY (HZ * 2)
41#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
42#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
43#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
44#define IEEE80211_ASSOC_MAX_TRIES 3
45
46static int max_nullfunc_tries = 2;
47module_param(max_nullfunc_tries, int, 0644);
48MODULE_PARM_DESC(max_nullfunc_tries,
49 "Maximum nullfunc tx tries before disconnecting (reason 4).");
50
51static int max_probe_tries = 5;
52module_param(max_probe_tries, int, 0644);
53MODULE_PARM_DESC(max_probe_tries,
54 "Maximum probe tries before disconnecting (reason 4).");
55
56
57
58
59
60
61
62
63
64static int beacon_loss_count = 7;
65module_param(beacon_loss_count, int, 0644);
66MODULE_PARM_DESC(beacon_loss_count,
67 "Number of beacon intervals before we decide beacon was lost.");
68
69
70
71
72
73#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
74
75
76
77
78
79static int probe_wait_ms = 500;
80module_param(probe_wait_ms, int, 0644);
81MODULE_PARM_DESC(probe_wait_ms,
82 "Maximum time(ms) to wait for probe response"
83 " before disconnecting (reason 4).");
84
85
86
87
88
89#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
90
91
92
93
94
95
96
97
98
99
100
101static void run_again(struct ieee80211_sub_if_data *sdata,
102 unsigned long timeout)
103{
104 sdata_assert_lock(sdata);
105
106 if (!timer_pending(&sdata->u.mgd.timer) ||
107 time_before(timeout, sdata->u.mgd.timer.expires))
108 mod_timer(&sdata->u.mgd.timer, timeout);
109}
110
111void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
112{
113 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
114 return;
115
116 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
117 return;
118
119 mod_timer(&sdata->u.mgd.bcn_mon_timer,
120 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
121}
122
123void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
124{
125 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
126
127 if (unlikely(!ifmgd->associated))
128 return;
129
130 if (ifmgd->probe_send_count)
131 ifmgd->probe_send_count = 0;
132
133 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
134 return;
135
136 mod_timer(&ifmgd->conn_mon_timer,
137 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
138}
139
140static int ecw2cw(int ecw)
141{
142 return (1 << ecw) - 1;
143}
144
145static u32
146ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
147 struct ieee80211_supported_band *sband,
148 struct ieee80211_channel *channel,
149 u32 vht_cap_info,
150 const struct ieee80211_ht_operation *ht_oper,
151 const struct ieee80211_vht_operation *vht_oper,
152 const struct ieee80211_he_operation *he_oper,
153 const struct ieee80211_s1g_oper_ie *s1g_oper,
154 struct cfg80211_chan_def *chandef, bool tracking)
155{
156 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
157 struct cfg80211_chan_def vht_chandef;
158 struct ieee80211_sta_ht_cap sta_ht_cap;
159 u32 ht_cfreq, ret;
160
161 memset(chandef, 0, sizeof(struct cfg80211_chan_def));
162 chandef->chan = channel;
163 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
164 chandef->center_freq1 = channel->center_freq;
165 chandef->freq1_offset = channel->freq_offset;
166
167 if (channel->band == NL80211_BAND_6GHZ) {
168 if (!ieee80211_chandef_he_6ghz_oper(sdata, he_oper, chandef)) {
169 mlme_dbg(sdata,
170 "bad 6 GHz operation, disabling HT/VHT/HE\n");
171 ret = IEEE80211_STA_DISABLE_HT |
172 IEEE80211_STA_DISABLE_VHT |
173 IEEE80211_STA_DISABLE_HE;
174 } else {
175 ret = 0;
176 }
177 vht_chandef = *chandef;
178 goto out;
179 } else if (sband->band == NL80211_BAND_S1GHZ) {
180 if (!ieee80211_chandef_s1g_oper(s1g_oper, chandef)) {
181 sdata_info(sdata,
182 "Missing S1G Operation Element? Trying operating == primary\n");
183 chandef->width = ieee80211_s1g_channel_width(channel);
184 }
185
186 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_40MHZ |
187 IEEE80211_STA_DISABLE_VHT |
188 IEEE80211_STA_DISABLE_80P80MHZ |
189 IEEE80211_STA_DISABLE_160MHZ;
190 goto out;
191 }
192
193 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
194 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
195
196 if (!ht_oper || !sta_ht_cap.ht_supported) {
197 mlme_dbg(sdata, "HT operation missing / HT not supported\n");
198 ret = IEEE80211_STA_DISABLE_HT |
199 IEEE80211_STA_DISABLE_VHT |
200 IEEE80211_STA_DISABLE_HE;
201 goto out;
202 }
203
204 chandef->width = NL80211_CHAN_WIDTH_20;
205
206 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
207 channel->band);
208
209 if (!tracking && channel->center_freq != ht_cfreq) {
210
211
212
213
214
215
216
217 sdata_info(sdata,
218 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
219 channel->center_freq, ht_cfreq,
220 ht_oper->primary_chan, channel->band);
221 ret = IEEE80211_STA_DISABLE_HT |
222 IEEE80211_STA_DISABLE_VHT |
223 IEEE80211_STA_DISABLE_HE;
224 goto out;
225 }
226
227
228 if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
229 ieee80211_chandef_ht_oper(ht_oper, chandef);
230 } else {
231 mlme_dbg(sdata, "40 MHz not supported\n");
232
233 ret = IEEE80211_STA_DISABLE_VHT;
234
235 ret |= IEEE80211_STA_DISABLE_40MHZ;
236 goto out;
237 }
238
239 if (!vht_oper || !sband->vht_cap.vht_supported) {
240 mlme_dbg(sdata, "VHT operation missing / VHT not supported\n");
241 ret = IEEE80211_STA_DISABLE_VHT;
242 goto out;
243 }
244
245 vht_chandef = *chandef;
246 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && he_oper &&
247 (le32_to_cpu(he_oper->he_oper_params) &
248 IEEE80211_HE_OPERATION_VHT_OPER_INFO)) {
249 struct ieee80211_vht_operation he_oper_vht_cap;
250
251
252
253
254
255 memcpy(&he_oper_vht_cap, he_oper->optional, 3);
256 he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0);
257
258 if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_cap_info,
259 &he_oper_vht_cap, ht_oper,
260 &vht_chandef)) {
261 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
262 sdata_info(sdata,
263 "HE AP VHT information is invalid, disabling HE\n");
264 ret = IEEE80211_STA_DISABLE_HE;
265 goto out;
266 }
267 } else if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
268 vht_cap_info,
269 vht_oper, ht_oper,
270 &vht_chandef)) {
271 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
272 sdata_info(sdata,
273 "AP VHT information is invalid, disabling VHT\n");
274 ret = IEEE80211_STA_DISABLE_VHT;
275 goto out;
276 }
277
278 if (!cfg80211_chandef_valid(&vht_chandef)) {
279 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
280 sdata_info(sdata,
281 "AP VHT information is invalid, disabling VHT\n");
282 ret = IEEE80211_STA_DISABLE_VHT;
283 goto out;
284 }
285
286 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
287 ret = 0;
288 goto out;
289 }
290
291 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
292 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
293 sdata_info(sdata,
294 "AP VHT information doesn't match HT, disabling VHT\n");
295 ret = IEEE80211_STA_DISABLE_VHT;
296 goto out;
297 }
298
299 *chandef = vht_chandef;
300
301 ret = 0;
302
303out:
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322 if (tracking &&
323 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
324 return ret;
325
326
327 if (ret & IEEE80211_STA_DISABLE_VHT)
328 vht_chandef = *chandef;
329
330
331
332
333
334
335
336
337
338 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
339 tracking ? 0 :
340 IEEE80211_CHAN_DISABLED)) {
341 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
342 ret = IEEE80211_STA_DISABLE_HT |
343 IEEE80211_STA_DISABLE_VHT |
344 IEEE80211_STA_DISABLE_HE;
345 break;
346 }
347
348 ret |= ieee80211_chandef_downgrade(chandef);
349 }
350
351 if (!he_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
352 IEEE80211_CHAN_NO_HE))
353 ret |= IEEE80211_STA_DISABLE_HE;
354
355 if (chandef->width != vht_chandef.width && !tracking)
356 sdata_info(sdata,
357 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
358
359 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
360 return ret;
361}
362
363static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
364 struct sta_info *sta,
365 const struct ieee80211_ht_cap *ht_cap,
366 const struct ieee80211_vht_cap *vht_cap,
367 const struct ieee80211_ht_operation *ht_oper,
368 const struct ieee80211_vht_operation *vht_oper,
369 const struct ieee80211_he_operation *he_oper,
370 const struct ieee80211_s1g_oper_ie *s1g_oper,
371 const u8 *bssid, u32 *changed)
372{
373 struct ieee80211_local *local = sdata->local;
374 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
375 struct ieee80211_channel *chan = sdata->vif.bss_conf.chandef.chan;
376 struct ieee80211_supported_band *sband =
377 local->hw.wiphy->bands[chan->band];
378 struct cfg80211_chan_def chandef;
379 u16 ht_opmode;
380 u32 flags;
381 u32 vht_cap_info = 0;
382 int ret;
383
384
385 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
386 return 0;
387
388
389 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
390 vht_oper = NULL;
391
392
393 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE ||
394 !ieee80211_get_he_iftype_cap(sband,
395 ieee80211_vif_type_p2p(&sdata->vif)))
396
397 he_oper = NULL;
398
399 if (WARN_ON_ONCE(!sta))
400 return -EINVAL;
401
402
403
404
405
406 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
407 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
408 *changed |= BSS_CHANGED_HT;
409 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
410 }
411
412 if (vht_cap)
413 vht_cap_info = le32_to_cpu(vht_cap->vht_cap_info);
414
415
416 flags = ieee80211_determine_chantype(sdata, sband, chan, vht_cap_info,
417 ht_oper, vht_oper, he_oper,
418 s1g_oper, &chandef, true);
419
420
421
422
423
424
425
426
427 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
428 chandef.width == NL80211_CHAN_WIDTH_80P80)
429 flags |= ieee80211_chandef_downgrade(&chandef);
430 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
431 chandef.width == NL80211_CHAN_WIDTH_160)
432 flags |= ieee80211_chandef_downgrade(&chandef);
433 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
434 chandef.width > NL80211_CHAN_WIDTH_20)
435 flags |= ieee80211_chandef_downgrade(&chandef);
436
437 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
438 return 0;
439
440 sdata_info(sdata,
441 "AP %pM changed bandwidth, new config is %d.%03d MHz, "
442 "width %d (%d.%03d/%d MHz)\n",
443 ifmgd->bssid, chandef.chan->center_freq,
444 chandef.chan->freq_offset, chandef.width,
445 chandef.center_freq1, chandef.freq1_offset,
446 chandef.center_freq2);
447
448 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
449 IEEE80211_STA_DISABLE_VHT |
450 IEEE80211_STA_DISABLE_HE |
451 IEEE80211_STA_DISABLE_40MHZ |
452 IEEE80211_STA_DISABLE_80P80MHZ |
453 IEEE80211_STA_DISABLE_160MHZ)) ||
454 !cfg80211_chandef_valid(&chandef)) {
455 sdata_info(sdata,
456 "AP %pM changed caps/bw in a way we can't support (0x%x/0x%x) - disconnect\n",
457 ifmgd->bssid, flags, ifmgd->flags);
458 return -EINVAL;
459 }
460
461 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
462
463 if (ret) {
464 sdata_info(sdata,
465 "AP %pM changed bandwidth to incompatible one - disconnect\n",
466 ifmgd->bssid);
467 return ret;
468 }
469
470 return 0;
471}
472
473
474
475static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
476 struct sk_buff *skb, u8 ap_ht_param,
477 struct ieee80211_supported_band *sband,
478 struct ieee80211_channel *channel,
479 enum ieee80211_smps_mode smps)
480{
481 u8 *pos;
482 u32 flags = channel->flags;
483 u16 cap;
484 struct ieee80211_sta_ht_cap ht_cap;
485
486 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
487
488 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
489 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
490
491
492 cap = ht_cap.cap;
493
494 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
495 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
496 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
497 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
498 cap &= ~IEEE80211_HT_CAP_SGI_40;
499 }
500 break;
501 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
502 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
503 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
504 cap &= ~IEEE80211_HT_CAP_SGI_40;
505 }
506 break;
507 }
508
509
510
511
512
513
514 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
515 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
516 cap &= ~IEEE80211_HT_CAP_SGI_40;
517 }
518
519
520 cap &= ~IEEE80211_HT_CAP_SM_PS;
521 switch (smps) {
522 case IEEE80211_SMPS_AUTOMATIC:
523 case IEEE80211_SMPS_NUM_MODES:
524 WARN_ON(1);
525 fallthrough;
526 case IEEE80211_SMPS_OFF:
527 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
528 IEEE80211_HT_CAP_SM_PS_SHIFT;
529 break;
530 case IEEE80211_SMPS_STATIC:
531 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
532 IEEE80211_HT_CAP_SM_PS_SHIFT;
533 break;
534 case IEEE80211_SMPS_DYNAMIC:
535 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
536 IEEE80211_HT_CAP_SM_PS_SHIFT;
537 break;
538 }
539
540
541 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
542 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
543}
544
545
546
547
548
549static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
550 struct sk_buff *skb,
551 struct ieee80211_supported_band *sband,
552 struct ieee80211_vht_cap *ap_vht_cap)
553{
554 struct ieee80211_local *local = sdata->local;
555 u8 *pos;
556 u32 cap;
557 struct ieee80211_sta_vht_cap vht_cap;
558 u32 mask, ap_bf_sts, our_bf_sts;
559
560 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
561
562 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
563 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
564
565
566 cap = vht_cap.cap;
567
568 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
569 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
570
571 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
572 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
573 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
574 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
575 }
576
577 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
578 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
579 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
580 }
581
582
583
584
585
586 if (!(ap_vht_cap->vht_cap_info &
587 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
588 cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
589 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
590 else if (!(ap_vht_cap->vht_cap_info &
591 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
592 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
593
594
595
596
597
598
599
600
601 if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
602 bool disable_mu_mimo = false;
603 struct ieee80211_sub_if_data *other;
604
605 list_for_each_entry_rcu(other, &local->interfaces, list) {
606 if (other->vif.mu_mimo_owner) {
607 disable_mu_mimo = true;
608 break;
609 }
610 }
611 if (disable_mu_mimo)
612 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
613 else
614 sdata->vif.mu_mimo_owner = true;
615 }
616
617 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
618
619 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
620 our_bf_sts = cap & mask;
621
622 if (ap_bf_sts < our_bf_sts) {
623 cap &= ~mask;
624 cap |= ap_bf_sts;
625 }
626
627
628 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
629 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
630}
631
632
633
634
635static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
636 struct sk_buff *skb,
637 struct ieee80211_supported_band *sband)
638{
639 u8 *pos;
640 const struct ieee80211_sta_he_cap *he_cap = NULL;
641 struct ieee80211_chanctx_conf *chanctx_conf;
642 u8 he_cap_size;
643 bool reg_cap = false;
644
645 rcu_read_lock();
646 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
647 if (!WARN_ON_ONCE(!chanctx_conf))
648 reg_cap = cfg80211_chandef_usable(sdata->wdev.wiphy,
649 &chanctx_conf->def,
650 IEEE80211_CHAN_NO_HE);
651
652 rcu_read_unlock();
653
654 he_cap = ieee80211_get_he_iftype_cap(sband,
655 ieee80211_vif_type_p2p(&sdata->vif));
656 if (!he_cap || !reg_cap)
657 return;
658
659 he_cap_size =
660 2 + 1 + sizeof(he_cap->he_cap_elem) +
661 ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem) +
662 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
663 he_cap->he_cap_elem.phy_cap_info);
664 pos = skb_put(skb, he_cap_size);
665 ieee80211_ie_build_he_cap(pos, he_cap, pos + he_cap_size);
666
667 ieee80211_ie_build_he_6ghz_cap(sdata, skb);
668}
669
670static int ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
671{
672 struct ieee80211_local *local = sdata->local;
673 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
674 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
675 struct sk_buff *skb;
676 struct ieee80211_mgmt *mgmt;
677 u8 *pos, qos_info, *ie_start;
678 size_t offset = 0, noffset;
679 int i, count, rates_len, supp_rates_len, shift;
680 u16 capab;
681 struct ieee80211_supported_band *sband;
682 struct ieee80211_chanctx_conf *chanctx_conf;
683 struct ieee80211_channel *chan;
684 u32 rates = 0;
685 __le16 listen_int;
686 struct element *ext_capa = NULL;
687 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
688 const struct ieee80211_sband_iftype_data *iftd;
689 struct ieee80211_prep_tx_info info = {};
690 int ret;
691
692
693 if (assoc_data->ie_len)
694 ext_capa = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
695 assoc_data->ie,
696 assoc_data->ie_len);
697
698 sdata_assert_lock(sdata);
699
700 rcu_read_lock();
701 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
702 if (WARN_ON(!chanctx_conf)) {
703 rcu_read_unlock();
704 return -EINVAL;
705 }
706 chan = chanctx_conf->def.chan;
707 rcu_read_unlock();
708 sband = local->hw.wiphy->bands[chan->band];
709 shift = ieee80211_vif_get_shift(&sdata->vif);
710
711 if (assoc_data->supp_rates_len) {
712
713
714
715
716
717
718 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
719 assoc_data->supp_rates,
720 assoc_data->supp_rates_len,
721 &rates);
722 } else {
723
724
725
726
727
728 rates_len = 0;
729 for (i = 0; i < sband->n_bitrates; i++) {
730 rates |= BIT(i);
731 rates_len++;
732 }
733 }
734
735 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
736
737 skb = alloc_skb(local->hw.extra_tx_headroom +
738 sizeof(*mgmt) +
739 2 + assoc_data->ssid_len +
740 4 + rates_len +
741 4 +
742 2 + 2 * sband->n_channels +
743 2 + sizeof(struct ieee80211_ht_cap) +
744 2 + sizeof(struct ieee80211_vht_cap) +
745 2 + 1 + sizeof(struct ieee80211_he_cap_elem) +
746 sizeof(struct ieee80211_he_mcs_nss_supp) +
747 IEEE80211_HE_PPE_THRES_MAX_LEN +
748 2 + 1 + sizeof(struct ieee80211_he_6ghz_capa) +
749 assoc_data->ie_len +
750 (assoc_data->fils_kek_len ? 16 : 0) +
751 9 +
752 (iftd ? iftd->vendor_elems.len : 0),
753 GFP_KERNEL);
754 if (!skb)
755 return -ENOMEM;
756
757 skb_reserve(skb, local->hw.extra_tx_headroom);
758
759 capab = WLAN_CAPABILITY_ESS;
760
761 if (sband->band == NL80211_BAND_2GHZ) {
762 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
763 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
764 }
765
766 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
767 capab |= WLAN_CAPABILITY_PRIVACY;
768
769 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
770 ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
771 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
772
773 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
774 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
775
776 mgmt = skb_put_zero(skb, 24);
777 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
778 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
779 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
780
781 listen_int = cpu_to_le16(sband->band == NL80211_BAND_S1GHZ ?
782 ieee80211_encode_usf(local->hw.conf.listen_interval) :
783 local->hw.conf.listen_interval);
784 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
785 skb_put(skb, 10);
786 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
787 IEEE80211_STYPE_REASSOC_REQ);
788 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
789 mgmt->u.reassoc_req.listen_interval = listen_int;
790 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
791 ETH_ALEN);
792 info.subtype = IEEE80211_STYPE_REASSOC_REQ;
793 } else {
794 skb_put(skb, 4);
795 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
796 IEEE80211_STYPE_ASSOC_REQ);
797 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
798 mgmt->u.assoc_req.listen_interval = listen_int;
799 info.subtype = IEEE80211_STYPE_ASSOC_REQ;
800 }
801
802
803 pos = skb_put(skb, 2 + assoc_data->ssid_len);
804 ie_start = pos;
805 *pos++ = WLAN_EID_SSID;
806 *pos++ = assoc_data->ssid_len;
807 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
808
809 if (sband->band == NL80211_BAND_S1GHZ)
810 goto skip_rates;
811
812
813 supp_rates_len = rates_len;
814 if (supp_rates_len > 8)
815 supp_rates_len = 8;
816
817 pos = skb_put(skb, supp_rates_len + 2);
818 *pos++ = WLAN_EID_SUPP_RATES;
819 *pos++ = supp_rates_len;
820
821 count = 0;
822 for (i = 0; i < sband->n_bitrates; i++) {
823 if (BIT(i) & rates) {
824 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
825 5 * (1 << shift));
826 *pos++ = (u8) rate;
827 if (++count == 8)
828 break;
829 }
830 }
831
832 if (rates_len > count) {
833 pos = skb_put(skb, rates_len - count + 2);
834 *pos++ = WLAN_EID_EXT_SUPP_RATES;
835 *pos++ = rates_len - count;
836
837 for (i++; i < sband->n_bitrates; i++) {
838 if (BIT(i) & rates) {
839 int rate;
840 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
841 5 * (1 << shift));
842 *pos++ = (u8) rate;
843 }
844 }
845 }
846
847skip_rates:
848 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
849 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
850 pos = skb_put(skb, 4);
851 *pos++ = WLAN_EID_PWR_CAPABILITY;
852 *pos++ = 2;
853 *pos++ = 0;
854
855 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
856 }
857
858
859
860
861
862
863 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT &&
864 (sband->band != NL80211_BAND_6GHZ ||
865 !ext_capa || ext_capa->datalen < 1 ||
866 !(ext_capa->data[0] & WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING))) {
867
868 pos = skb_put(skb, 2 * sband->n_channels + 2);
869 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
870 *pos++ = 2 * sband->n_channels;
871 for (i = 0; i < sband->n_channels; i++) {
872 *pos++ = ieee80211_frequency_to_channel(
873 sband->channels[i].center_freq);
874 *pos++ = 1;
875 }
876 }
877
878
879 if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) &&
880 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && assoc_data->ie_len &&
881 ext_capa && ext_capa->datalen >= 3)
882 ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
883
884
885 if (assoc_data->ie_len) {
886 static const u8 before_ht[] = {
887 WLAN_EID_SSID,
888 WLAN_EID_SUPP_RATES,
889 WLAN_EID_EXT_SUPP_RATES,
890 WLAN_EID_PWR_CAPABILITY,
891 WLAN_EID_SUPPORTED_CHANNELS,
892 WLAN_EID_RSN,
893 WLAN_EID_QOS_CAPA,
894 WLAN_EID_RRM_ENABLED_CAPABILITIES,
895 WLAN_EID_MOBILITY_DOMAIN,
896 WLAN_EID_FAST_BSS_TRANSITION,
897 WLAN_EID_RIC_DATA,
898 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
899 };
900 static const u8 after_ric[] = {
901 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
902 WLAN_EID_HT_CAPABILITY,
903 WLAN_EID_BSS_COEX_2040,
904
905 WLAN_EID_EXT_CAPABILITY,
906 WLAN_EID_QOS_TRAFFIC_CAPA,
907 WLAN_EID_TIM_BCAST_REQ,
908 WLAN_EID_INTERWORKING,
909
910 WLAN_EID_VHT_CAPABILITY,
911 WLAN_EID_OPMODE_NOTIF,
912 };
913
914 noffset = ieee80211_ie_split_ric(assoc_data->ie,
915 assoc_data->ie_len,
916 before_ht,
917 ARRAY_SIZE(before_ht),
918 after_ric,
919 ARRAY_SIZE(after_ric),
920 offset);
921 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
922 offset = noffset;
923 }
924
925 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
926 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
927 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
928
929 if (sband->band != NL80211_BAND_6GHZ &&
930 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
931 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
932 sband, chan, sdata->smps_mode);
933
934
935 if (assoc_data->ie_len) {
936 static const u8 before_vht[] = {
937
938
939
940
941 WLAN_EID_BSS_COEX_2040,
942 WLAN_EID_EXT_CAPABILITY,
943 WLAN_EID_QOS_TRAFFIC_CAPA,
944 WLAN_EID_TIM_BCAST_REQ,
945 WLAN_EID_INTERWORKING,
946
947 };
948
949
950 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
951 before_vht, ARRAY_SIZE(before_vht),
952 offset);
953 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
954 offset = noffset;
955 }
956
957
958 if (assoc_data->ie_len) {
959 static const u8 before_he[] = {
960
961
962
963
964 WLAN_EID_OPMODE_NOTIF,
965 WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE,
966
967 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION,
968 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY,
969 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM,
970 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER,
971 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN,
972
973 };
974
975
976 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
977 before_he, ARRAY_SIZE(before_he),
978 offset);
979 pos = skb_put(skb, noffset - offset);
980 memcpy(pos, assoc_data->ie + offset, noffset - offset);
981 offset = noffset;
982 }
983
984 if (sband->band != NL80211_BAND_6GHZ &&
985 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
986 ieee80211_add_vht_ie(sdata, skb, sband,
987 &assoc_data->ap_vht_cap);
988
989
990
991
992
993 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT ||
994 (sband->band == NL80211_BAND_5GHZ &&
995 ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
996 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
997
998 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
999 ieee80211_add_he_ie(sdata, skb, sband);
1000
1001
1002 if (assoc_data->ie_len) {
1003 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
1004 assoc_data->ie_len,
1005 offset);
1006 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
1007 offset = noffset;
1008 }
1009
1010 if (assoc_data->wmm) {
1011 if (assoc_data->uapsd) {
1012 qos_info = ifmgd->uapsd_queues;
1013 qos_info |= (ifmgd->uapsd_max_sp_len <<
1014 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
1015 } else {
1016 qos_info = 0;
1017 }
1018
1019 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
1020 }
1021
1022 if (sband->band == NL80211_BAND_S1GHZ) {
1023 ieee80211_add_aid_request_ie(sdata, skb);
1024 ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap, skb);
1025 }
1026
1027 if (iftd && iftd->vendor_elems.data && iftd->vendor_elems.len)
1028 skb_put_data(skb, iftd->vendor_elems.data, iftd->vendor_elems.len);
1029
1030
1031 if (assoc_data->ie_len) {
1032 noffset = assoc_data->ie_len;
1033 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
1034 }
1035
1036 if (assoc_data->fils_kek_len) {
1037 ret = fils_encrypt_assoc_req(skb, assoc_data);
1038 if (ret < 0) {
1039 dev_kfree_skb(skb);
1040 return ret;
1041 }
1042 }
1043
1044 pos = skb_tail_pointer(skb);
1045 kfree(ifmgd->assoc_req_ies);
1046 ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC);
1047 if (!ifmgd->assoc_req_ies) {
1048 dev_kfree_skb(skb);
1049 return -ENOMEM;
1050 }
1051
1052 ifmgd->assoc_req_ies_len = pos - ie_start;
1053
1054 drv_mgd_prepare_tx(local, sdata, &info);
1055
1056 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1057 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1058 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
1059 IEEE80211_TX_INTFL_MLME_CONN_TX;
1060 ieee80211_tx_skb(sdata, skb);
1061
1062 return 0;
1063}
1064
1065void ieee80211_send_pspoll(struct ieee80211_local *local,
1066 struct ieee80211_sub_if_data *sdata)
1067{
1068 struct ieee80211_pspoll *pspoll;
1069 struct sk_buff *skb;
1070
1071 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
1072 if (!skb)
1073 return;
1074
1075 pspoll = (struct ieee80211_pspoll *) skb->data;
1076 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1077
1078 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1079 ieee80211_tx_skb(sdata, skb);
1080}
1081
1082void ieee80211_send_nullfunc(struct ieee80211_local *local,
1083 struct ieee80211_sub_if_data *sdata,
1084 bool powersave)
1085{
1086 struct sk_buff *skb;
1087 struct ieee80211_hdr_3addr *nullfunc;
1088 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1089
1090 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
1091 !ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP));
1092 if (!skb)
1093 return;
1094
1095 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
1096 if (powersave)
1097 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1098
1099 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1100 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
1101
1102 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1103 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
1104
1105 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
1106 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
1107
1108 ieee80211_tx_skb(sdata, skb);
1109}
1110
1111void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
1112 struct ieee80211_sub_if_data *sdata)
1113{
1114 struct sk_buff *skb;
1115 struct ieee80211_hdr *nullfunc;
1116 __le16 fc;
1117
1118 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1119 return;
1120
1121 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
1122 if (!skb)
1123 return;
1124
1125 skb_reserve(skb, local->hw.extra_tx_headroom);
1126
1127 nullfunc = skb_put_zero(skb, 30);
1128 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
1129 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
1130 nullfunc->frame_control = fc;
1131 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
1132 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
1133 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
1134 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
1135
1136 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1137 ieee80211_tx_skb(sdata, skb);
1138}
1139
1140
1141static void ieee80211_chswitch_work(struct work_struct *work)
1142{
1143 struct ieee80211_sub_if_data *sdata =
1144 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
1145 struct ieee80211_local *local = sdata->local;
1146 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1147 int ret;
1148
1149 if (!ieee80211_sdata_running(sdata))
1150 return;
1151
1152 sdata_lock(sdata);
1153 mutex_lock(&local->mtx);
1154 mutex_lock(&local->chanctx_mtx);
1155
1156 if (!ifmgd->associated)
1157 goto out;
1158
1159 if (!sdata->vif.csa_active)
1160 goto out;
1161
1162
1163
1164
1165
1166
1167
1168
1169 if (sdata->reserved_chanctx) {
1170
1171
1172
1173
1174
1175 if (sdata->reserved_ready)
1176 goto out;
1177
1178 ret = ieee80211_vif_use_reserved_context(sdata);
1179 if (ret) {
1180 sdata_info(sdata,
1181 "failed to use reserved channel context, disconnecting (err=%d)\n",
1182 ret);
1183 ieee80211_queue_work(&sdata->local->hw,
1184 &ifmgd->csa_connection_drop_work);
1185 goto out;
1186 }
1187
1188 goto out;
1189 }
1190
1191 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1192 &sdata->csa_chandef)) {
1193 sdata_info(sdata,
1194 "failed to finalize channel switch, disconnecting\n");
1195 ieee80211_queue_work(&sdata->local->hw,
1196 &ifmgd->csa_connection_drop_work);
1197 goto out;
1198 }
1199
1200 ifmgd->csa_waiting_bcn = true;
1201
1202 ieee80211_sta_reset_beacon_monitor(sdata);
1203 ieee80211_sta_reset_conn_monitor(sdata);
1204
1205out:
1206 mutex_unlock(&local->chanctx_mtx);
1207 mutex_unlock(&local->mtx);
1208 sdata_unlock(sdata);
1209}
1210
1211static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1212{
1213 struct ieee80211_local *local = sdata->local;
1214 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1215 int ret;
1216
1217 sdata_assert_lock(sdata);
1218
1219 WARN_ON(!sdata->vif.csa_active);
1220
1221 if (sdata->csa_block_tx) {
1222 ieee80211_wake_vif_queues(local, sdata,
1223 IEEE80211_QUEUE_STOP_REASON_CSA);
1224 sdata->csa_block_tx = false;
1225 }
1226
1227 sdata->vif.csa_active = false;
1228 ifmgd->csa_waiting_bcn = false;
1229
1230
1231
1232
1233 ifmgd->beacon_crc_valid = false;
1234
1235 ret = drv_post_channel_switch(sdata);
1236 if (ret) {
1237 sdata_info(sdata,
1238 "driver post channel switch failed, disconnecting\n");
1239 ieee80211_queue_work(&local->hw,
1240 &ifmgd->csa_connection_drop_work);
1241 return;
1242 }
1243
1244 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
1245}
1246
1247void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1248{
1249 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1250 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1251
1252 trace_api_chswitch_done(sdata, success);
1253 if (!success) {
1254 sdata_info(sdata,
1255 "driver channel switch failed, disconnecting\n");
1256 ieee80211_queue_work(&sdata->local->hw,
1257 &ifmgd->csa_connection_drop_work);
1258 } else {
1259 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
1260 }
1261}
1262EXPORT_SYMBOL(ieee80211_chswitch_done);
1263
1264static void ieee80211_chswitch_timer(struct timer_list *t)
1265{
1266 struct ieee80211_sub_if_data *sdata =
1267 from_timer(sdata, t, u.mgd.chswitch_timer);
1268
1269 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
1270}
1271
1272static void
1273ieee80211_sta_abort_chanswitch(struct ieee80211_sub_if_data *sdata)
1274{
1275 struct ieee80211_local *local = sdata->local;
1276
1277 if (!local->ops->abort_channel_switch)
1278 return;
1279
1280 mutex_lock(&local->mtx);
1281
1282 mutex_lock(&local->chanctx_mtx);
1283 ieee80211_vif_unreserve_chanctx(sdata);
1284 mutex_unlock(&local->chanctx_mtx);
1285
1286 if (sdata->csa_block_tx)
1287 ieee80211_wake_vif_queues(local, sdata,
1288 IEEE80211_QUEUE_STOP_REASON_CSA);
1289
1290 sdata->csa_block_tx = false;
1291 sdata->vif.csa_active = false;
1292
1293 mutex_unlock(&local->mtx);
1294
1295 drv_abort_channel_switch(sdata);
1296}
1297
1298static void
1299ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1300 u64 timestamp, u32 device_timestamp,
1301 struct ieee802_11_elems *elems,
1302 bool beacon)
1303{
1304 struct ieee80211_local *local = sdata->local;
1305 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1306 struct cfg80211_bss *cbss = ifmgd->associated;
1307 struct ieee80211_chanctx_conf *conf;
1308 struct ieee80211_chanctx *chanctx;
1309 enum nl80211_band current_band;
1310 struct ieee80211_csa_ie csa_ie;
1311 struct ieee80211_channel_switch ch_switch;
1312 struct ieee80211_bss *bss;
1313 int res;
1314
1315 sdata_assert_lock(sdata);
1316
1317 if (!cbss)
1318 return;
1319
1320 if (local->scanning)
1321 return;
1322
1323 current_band = cbss->channel->band;
1324 bss = (void *)cbss->priv;
1325 res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
1326 bss->vht_cap_info,
1327 ifmgd->flags,
1328 ifmgd->associated->bssid, &csa_ie);
1329
1330 if (!res) {
1331 ch_switch.timestamp = timestamp;
1332 ch_switch.device_timestamp = device_timestamp;
1333 ch_switch.block_tx = csa_ie.mode;
1334 ch_switch.chandef = csa_ie.chandef;
1335 ch_switch.count = csa_ie.count;
1336 ch_switch.delay = csa_ie.max_switch_time;
1337 }
1338
1339 if (res < 0)
1340 goto lock_and_drop_connection;
1341
1342 if (beacon && sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) {
1343 if (res)
1344 ieee80211_sta_abort_chanswitch(sdata);
1345 else
1346 drv_channel_switch_rx_beacon(sdata, &ch_switch);
1347 return;
1348 } else if (sdata->vif.csa_active || res) {
1349
1350 return;
1351 }
1352
1353 if (sdata->vif.bss_conf.chandef.chan->band !=
1354 csa_ie.chandef.chan->band) {
1355 sdata_info(sdata,
1356 "AP %pM switches to different band (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
1357 ifmgd->associated->bssid,
1358 csa_ie.chandef.chan->center_freq,
1359 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1360 csa_ie.chandef.center_freq2);
1361 goto lock_and_drop_connection;
1362 }
1363
1364 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
1365 IEEE80211_CHAN_DISABLED)) {
1366 sdata_info(sdata,
1367 "AP %pM switches to unsupported channel "
1368 "(%d.%03d MHz, width:%d, CF1/2: %d.%03d/%d MHz), "
1369 "disconnecting\n",
1370 ifmgd->associated->bssid,
1371 csa_ie.chandef.chan->center_freq,
1372 csa_ie.chandef.chan->freq_offset,
1373 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1374 csa_ie.chandef.freq1_offset,
1375 csa_ie.chandef.center_freq2);
1376 goto lock_and_drop_connection;
1377 }
1378
1379 if (cfg80211_chandef_identical(&csa_ie.chandef,
1380 &sdata->vif.bss_conf.chandef) &&
1381 (!csa_ie.mode || !beacon)) {
1382 if (ifmgd->csa_ignored_same_chan)
1383 return;
1384 sdata_info(sdata,
1385 "AP %pM tries to chanswitch to same channel, ignore\n",
1386 ifmgd->associated->bssid);
1387 ifmgd->csa_ignored_same_chan = true;
1388 return;
1389 }
1390
1391
1392
1393
1394
1395
1396
1397 ieee80211_teardown_tdls_peers(sdata);
1398
1399 mutex_lock(&local->mtx);
1400 mutex_lock(&local->chanctx_mtx);
1401 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1402 lockdep_is_held(&local->chanctx_mtx));
1403 if (!conf) {
1404 sdata_info(sdata,
1405 "no channel context assigned to vif?, disconnecting\n");
1406 goto drop_connection;
1407 }
1408
1409 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1410
1411 if (local->use_chanctx &&
1412 !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) {
1413 sdata_info(sdata,
1414 "driver doesn't support chan-switch with channel contexts\n");
1415 goto drop_connection;
1416 }
1417
1418 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1419 sdata_info(sdata,
1420 "preparing for channel switch failed, disconnecting\n");
1421 goto drop_connection;
1422 }
1423
1424 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1425 chanctx->mode, false);
1426 if (res) {
1427 sdata_info(sdata,
1428 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1429 res);
1430 goto drop_connection;
1431 }
1432 mutex_unlock(&local->chanctx_mtx);
1433
1434 sdata->vif.csa_active = true;
1435 sdata->csa_chandef = csa_ie.chandef;
1436 sdata->csa_block_tx = csa_ie.mode;
1437 ifmgd->csa_ignored_same_chan = false;
1438 ifmgd->beacon_crc_valid = false;
1439
1440 if (sdata->csa_block_tx)
1441 ieee80211_stop_vif_queues(local, sdata,
1442 IEEE80211_QUEUE_STOP_REASON_CSA);
1443 mutex_unlock(&local->mtx);
1444
1445 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1446 csa_ie.count, csa_ie.mode);
1447
1448 if (local->ops->channel_switch) {
1449
1450 drv_channel_switch(local, sdata, &ch_switch);
1451 return;
1452 }
1453
1454
1455 if (csa_ie.count <= 1)
1456 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
1457 else
1458 mod_timer(&ifmgd->chswitch_timer,
1459 TU_TO_EXP_TIME((csa_ie.count - 1) *
1460 cbss->beacon_interval));
1461 return;
1462 lock_and_drop_connection:
1463 mutex_lock(&local->mtx);
1464 mutex_lock(&local->chanctx_mtx);
1465 drop_connection:
1466
1467
1468
1469
1470
1471
1472
1473 sdata->vif.csa_active = true;
1474 sdata->csa_block_tx = csa_ie.mode;
1475
1476 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
1477 mutex_unlock(&local->chanctx_mtx);
1478 mutex_unlock(&local->mtx);
1479}
1480
1481static bool
1482ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1483 struct ieee80211_channel *channel,
1484 const u8 *country_ie, u8 country_ie_len,
1485 const u8 *pwr_constr_elem,
1486 int *chan_pwr, int *pwr_reduction)
1487{
1488 struct ieee80211_country_ie_triplet *triplet;
1489 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1490 int i, chan_increment;
1491 bool have_chan_pwr = false;
1492
1493
1494 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1495 return false;
1496
1497 triplet = (void *)(country_ie + 3);
1498 country_ie_len -= 3;
1499
1500 switch (channel->band) {
1501 default:
1502 WARN_ON_ONCE(1);
1503 fallthrough;
1504 case NL80211_BAND_2GHZ:
1505 case NL80211_BAND_60GHZ:
1506 case NL80211_BAND_LC:
1507 chan_increment = 1;
1508 break;
1509 case NL80211_BAND_5GHZ:
1510 chan_increment = 4;
1511 break;
1512 case NL80211_BAND_6GHZ:
1513
1514
1515
1516
1517
1518
1519
1520 return false;
1521 }
1522
1523
1524 while (country_ie_len >= 3) {
1525 u8 first_channel = triplet->chans.first_channel;
1526
1527 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1528 goto next;
1529
1530 for (i = 0; i < triplet->chans.num_channels; i++) {
1531 if (first_channel + i * chan_increment == chan) {
1532 have_chan_pwr = true;
1533 *chan_pwr = triplet->chans.max_power;
1534 break;
1535 }
1536 }
1537 if (have_chan_pwr)
1538 break;
1539
1540 next:
1541 triplet++;
1542 country_ie_len -= 3;
1543 }
1544
1545 if (have_chan_pwr && pwr_constr_elem)
1546 *pwr_reduction = *pwr_constr_elem;
1547 else
1548 *pwr_reduction = 0;
1549
1550 return have_chan_pwr;
1551}
1552
1553static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1554 struct ieee80211_channel *channel,
1555 const u8 *cisco_dtpc_ie,
1556 int *pwr_level)
1557{
1558
1559
1560
1561
1562
1563
1564 *pwr_level = (__s8)cisco_dtpc_ie[4];
1565}
1566
1567static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1568 struct ieee80211_channel *channel,
1569 struct ieee80211_mgmt *mgmt,
1570 const u8 *country_ie, u8 country_ie_len,
1571 const u8 *pwr_constr_ie,
1572 const u8 *cisco_dtpc_ie)
1573{
1574 bool has_80211h_pwr = false, has_cisco_pwr = false;
1575 int chan_pwr = 0, pwr_reduction_80211h = 0;
1576 int pwr_level_cisco, pwr_level_80211h;
1577 int new_ap_level;
1578 __le16 capab = mgmt->u.probe_resp.capab_info;
1579
1580 if (ieee80211_is_s1g_beacon(mgmt->frame_control))
1581 return 0;
1582
1583 if (country_ie &&
1584 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1585 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
1586 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1587 sdata, channel, country_ie, country_ie_len,
1588 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
1589 pwr_level_80211h =
1590 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1591 }
1592
1593 if (cisco_dtpc_ie) {
1594 ieee80211_find_cisco_dtpc(
1595 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1596 has_cisco_pwr = true;
1597 }
1598
1599 if (!has_80211h_pwr && !has_cisco_pwr)
1600 return 0;
1601
1602
1603
1604
1605 if (has_80211h_pwr &&
1606 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
1607 new_ap_level = pwr_level_80211h;
1608
1609 if (sdata->ap_power_level == new_ap_level)
1610 return 0;
1611
1612 sdata_dbg(sdata,
1613 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1614 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1615 sdata->u.mgd.bssid);
1616 } else {
1617 new_ap_level = pwr_level_cisco;
1618
1619 if (sdata->ap_power_level == new_ap_level)
1620 return 0;
1621
1622 sdata_dbg(sdata,
1623 "Limiting TX power to %d dBm as advertised by %pM\n",
1624 pwr_level_cisco, sdata->u.mgd.bssid);
1625 }
1626
1627 sdata->ap_power_level = new_ap_level;
1628 if (__ieee80211_recalc_txpower(sdata))
1629 return BSS_CHANGED_TXPOWER;
1630 return 0;
1631}
1632
1633
1634static void ieee80211_enable_ps(struct ieee80211_local *local,
1635 struct ieee80211_sub_if_data *sdata)
1636{
1637 struct ieee80211_conf *conf = &local->hw.conf;
1638
1639
1640
1641
1642
1643 if (local->scanning)
1644 return;
1645
1646 if (conf->dynamic_ps_timeout > 0 &&
1647 !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
1648 mod_timer(&local->dynamic_ps_timer, jiffies +
1649 msecs_to_jiffies(conf->dynamic_ps_timeout));
1650 } else {
1651 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
1652 ieee80211_send_nullfunc(local, sdata, true);
1653
1654 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1655 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1656 return;
1657
1658 conf->flags |= IEEE80211_CONF_PS;
1659 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1660 }
1661}
1662
1663static void ieee80211_change_ps(struct ieee80211_local *local)
1664{
1665 struct ieee80211_conf *conf = &local->hw.conf;
1666
1667 if (local->ps_sdata) {
1668 ieee80211_enable_ps(local, local->ps_sdata);
1669 } else if (conf->flags & IEEE80211_CONF_PS) {
1670 conf->flags &= ~IEEE80211_CONF_PS;
1671 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1672 del_timer_sync(&local->dynamic_ps_timer);
1673 cancel_work_sync(&local->dynamic_ps_enable_work);
1674 }
1675}
1676
1677static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1678{
1679 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1680 struct sta_info *sta = NULL;
1681 bool authorized = false;
1682
1683 if (!mgd->powersave)
1684 return false;
1685
1686 if (mgd->broken_ap)
1687 return false;
1688
1689 if (!mgd->associated)
1690 return false;
1691
1692 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
1693 return false;
1694
1695 if (!mgd->have_beacon)
1696 return false;
1697
1698 rcu_read_lock();
1699 sta = sta_info_get(sdata, mgd->bssid);
1700 if (sta)
1701 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
1702 rcu_read_unlock();
1703
1704 return authorized;
1705}
1706
1707
1708void ieee80211_recalc_ps(struct ieee80211_local *local)
1709{
1710 struct ieee80211_sub_if_data *sdata, *found = NULL;
1711 int count = 0;
1712 int timeout;
1713
1714 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) {
1715 local->ps_sdata = NULL;
1716 return;
1717 }
1718
1719 list_for_each_entry(sdata, &local->interfaces, list) {
1720 if (!ieee80211_sdata_running(sdata))
1721 continue;
1722 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1723
1724
1725
1726
1727 count = 0;
1728 break;
1729 }
1730 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1731 continue;
1732 found = sdata;
1733 count++;
1734 }
1735
1736 if (count == 1 && ieee80211_powersave_allowed(found)) {
1737 u8 dtimper = found->u.mgd.dtim_period;
1738
1739 timeout = local->dynamic_ps_forced_timeout;
1740 if (timeout < 0)
1741 timeout = 100;
1742 local->hw.conf.dynamic_ps_timeout = timeout;
1743
1744
1745 if (!dtimper)
1746 dtimper = 1;
1747
1748 local->hw.conf.ps_dtim_period = dtimper;
1749 local->ps_sdata = found;
1750 } else {
1751 local->ps_sdata = NULL;
1752 }
1753
1754 ieee80211_change_ps(local);
1755}
1756
1757void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1758{
1759 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1760
1761 if (sdata->vif.bss_conf.ps != ps_allowed) {
1762 sdata->vif.bss_conf.ps = ps_allowed;
1763 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1764 }
1765}
1766
1767void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1768{
1769 struct ieee80211_local *local =
1770 container_of(work, struct ieee80211_local,
1771 dynamic_ps_disable_work);
1772
1773 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1774 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1775 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1776 }
1777
1778 ieee80211_wake_queues_by_reason(&local->hw,
1779 IEEE80211_MAX_QUEUE_MAP,
1780 IEEE80211_QUEUE_STOP_REASON_PS,
1781 false);
1782}
1783
1784void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1785{
1786 struct ieee80211_local *local =
1787 container_of(work, struct ieee80211_local,
1788 dynamic_ps_enable_work);
1789 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
1790 struct ieee80211_if_managed *ifmgd;
1791 unsigned long flags;
1792 int q;
1793
1794
1795 if (!sdata)
1796 return;
1797
1798 ifmgd = &sdata->u.mgd;
1799
1800 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1801 return;
1802
1803 if (local->hw.conf.dynamic_ps_timeout > 0) {
1804
1805 if (drv_tx_frames_pending(local)) {
1806 mod_timer(&local->dynamic_ps_timer, jiffies +
1807 msecs_to_jiffies(
1808 local->hw.conf.dynamic_ps_timeout));
1809 return;
1810 }
1811
1812
1813
1814
1815
1816
1817 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1818 for (q = 0; q < local->hw.queues; q++) {
1819 if (local->queue_stop_reasons[q]) {
1820 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1821 flags);
1822 mod_timer(&local->dynamic_ps_timer, jiffies +
1823 msecs_to_jiffies(
1824 local->hw.conf.dynamic_ps_timeout));
1825 return;
1826 }
1827 }
1828 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1829 }
1830
1831 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1832 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1833 if (drv_tx_frames_pending(local)) {
1834 mod_timer(&local->dynamic_ps_timer, jiffies +
1835 msecs_to_jiffies(
1836 local->hw.conf.dynamic_ps_timeout));
1837 } else {
1838 ieee80211_send_nullfunc(local, sdata, true);
1839
1840 ieee80211_flush_queues(local, sdata, false);
1841 }
1842 }
1843
1844 if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
1845 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) ||
1846 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1847 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1848 local->hw.conf.flags |= IEEE80211_CONF_PS;
1849 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1850 }
1851}
1852
1853void ieee80211_dynamic_ps_timer(struct timer_list *t)
1854{
1855 struct ieee80211_local *local = from_timer(local, t, dynamic_ps_timer);
1856
1857 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
1858}
1859
1860void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1861{
1862 struct delayed_work *delayed_work = to_delayed_work(work);
1863 struct ieee80211_sub_if_data *sdata =
1864 container_of(delayed_work, struct ieee80211_sub_if_data,
1865 dfs_cac_timer_work);
1866 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
1867
1868 mutex_lock(&sdata->local->mtx);
1869 if (sdata->wdev.cac_started) {
1870 ieee80211_vif_release_channel(sdata);
1871 cfg80211_cac_event(sdata->dev, &chandef,
1872 NL80211_RADAR_CAC_FINISHED,
1873 GFP_KERNEL);
1874 }
1875 mutex_unlock(&sdata->local->mtx);
1876}
1877
1878static bool
1879__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1880{
1881 struct ieee80211_local *local = sdata->local;
1882 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1883 bool ret = false;
1884 int ac;
1885
1886 if (local->hw.queues < IEEE80211_NUM_ACS)
1887 return false;
1888
1889 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1890 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1891 int non_acm_ac;
1892 unsigned long now = jiffies;
1893
1894 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1895 tx_tspec->admitted_time &&
1896 time_after(now, tx_tspec->time_slice_start + HZ)) {
1897 tx_tspec->consumed_tx_time = 0;
1898 tx_tspec->time_slice_start = now;
1899
1900 if (tx_tspec->downgraded)
1901 tx_tspec->action =
1902 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1903 }
1904
1905 switch (tx_tspec->action) {
1906 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1907
1908 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1909 sdata_err(sdata,
1910 "failed to set TX queue parameters for queue %d\n",
1911 ac);
1912 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1913 tx_tspec->downgraded = false;
1914 ret = true;
1915 break;
1916 case TX_TSPEC_ACTION_DOWNGRADE:
1917 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1918 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1919 ret = true;
1920 break;
1921 }
1922
1923 for (non_acm_ac = ac + 1;
1924 non_acm_ac < IEEE80211_NUM_ACS;
1925 non_acm_ac++)
1926 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1927 break;
1928
1929
1930
1931
1932
1933
1934
1935 if (non_acm_ac >= IEEE80211_NUM_ACS)
1936 non_acm_ac = IEEE80211_AC_BK;
1937 if (drv_conf_tx(local, sdata, ac,
1938 &sdata->tx_conf[non_acm_ac]))
1939 sdata_err(sdata,
1940 "failed to set TX queue parameters for queue %d\n",
1941 ac);
1942 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1943 ret = true;
1944 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1945 tx_tspec->time_slice_start + HZ - now + 1);
1946 break;
1947 case TX_TSPEC_ACTION_NONE:
1948
1949 break;
1950 }
1951 }
1952
1953 return ret;
1954}
1955
1956void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1957{
1958 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1959 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1960}
1961
1962static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1963{
1964 struct ieee80211_sub_if_data *sdata;
1965
1966 sdata = container_of(work, struct ieee80211_sub_if_data,
1967 u.mgd.tx_tspec_wk.work);
1968 ieee80211_sta_handle_tspec_ac_params(sdata);
1969}
1970
1971
1972static bool
1973ieee80211_sta_wmm_params(struct ieee80211_local *local,
1974 struct ieee80211_sub_if_data *sdata,
1975 const u8 *wmm_param, size_t wmm_param_len,
1976 const struct ieee80211_mu_edca_param_set *mu_edca)
1977{
1978 struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
1979 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1980 size_t left;
1981 int count, mu_edca_count, ac;
1982 const u8 *pos;
1983 u8 uapsd_queues = 0;
1984
1985 if (!local->ops->conf_tx)
1986 return false;
1987
1988 if (local->hw.queues < IEEE80211_NUM_ACS)
1989 return false;
1990
1991 if (!wmm_param)
1992 return false;
1993
1994 if (wmm_param_len < 8 || wmm_param[5] != 1)
1995 return false;
1996
1997 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
1998 uapsd_queues = ifmgd->uapsd_queues;
1999
2000 count = wmm_param[6] & 0x0f;
2001
2002
2003
2004
2005 mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1;
2006 if (count == ifmgd->wmm_last_param_set &&
2007 mu_edca_count == ifmgd->mu_edca_last_param_set)
2008 return false;
2009 ifmgd->wmm_last_param_set = count;
2010 ifmgd->mu_edca_last_param_set = mu_edca_count;
2011
2012 pos = wmm_param + 8;
2013 left = wmm_param_len - 8;
2014
2015 memset(¶ms, 0, sizeof(params));
2016
2017 sdata->wmm_acm = 0;
2018 for (; left >= 4; left -= 4, pos += 4) {
2019 int aci = (pos[0] >> 5) & 0x03;
2020 int acm = (pos[0] >> 4) & 0x01;
2021 bool uapsd = false;
2022
2023 switch (aci) {
2024 case 1:
2025 ac = IEEE80211_AC_BK;
2026 if (acm)
2027 sdata->wmm_acm |= BIT(1) | BIT(2);
2028 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
2029 uapsd = true;
2030 params[ac].mu_edca = !!mu_edca;
2031 if (mu_edca)
2032 params[ac].mu_edca_param_rec = mu_edca->ac_bk;
2033 break;
2034 case 2:
2035 ac = IEEE80211_AC_VI;
2036 if (acm)
2037 sdata->wmm_acm |= BIT(4) | BIT(5);
2038 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
2039 uapsd = true;
2040 params[ac].mu_edca = !!mu_edca;
2041 if (mu_edca)
2042 params[ac].mu_edca_param_rec = mu_edca->ac_vi;
2043 break;
2044 case 3:
2045 ac = IEEE80211_AC_VO;
2046 if (acm)
2047 sdata->wmm_acm |= BIT(6) | BIT(7);
2048 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
2049 uapsd = true;
2050 params[ac].mu_edca = !!mu_edca;
2051 if (mu_edca)
2052 params[ac].mu_edca_param_rec = mu_edca->ac_vo;
2053 break;
2054 case 0:
2055 default:
2056 ac = IEEE80211_AC_BE;
2057 if (acm)
2058 sdata->wmm_acm |= BIT(0) | BIT(3);
2059 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
2060 uapsd = true;
2061 params[ac].mu_edca = !!mu_edca;
2062 if (mu_edca)
2063 params[ac].mu_edca_param_rec = mu_edca->ac_be;
2064 break;
2065 }
2066
2067 params[ac].aifs = pos[0] & 0x0f;
2068
2069 if (params[ac].aifs < 2) {
2070 sdata_info(sdata,
2071 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
2072 params[ac].aifs, aci);
2073 params[ac].aifs = 2;
2074 }
2075 params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
2076 params[ac].cw_min = ecw2cw(pos[1] & 0x0f);
2077 params[ac].txop = get_unaligned_le16(pos + 2);
2078 params[ac].acm = acm;
2079 params[ac].uapsd = uapsd;
2080
2081 if (params[ac].cw_min == 0 ||
2082 params[ac].cw_min > params[ac].cw_max) {
2083 sdata_info(sdata,
2084 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
2085 params[ac].cw_min, params[ac].cw_max, aci);
2086 return false;
2087 }
2088 ieee80211_regulatory_limit_wmm_params(sdata, ¶ms[ac], ac);
2089 }
2090
2091
2092 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2093 if (params[ac].cw_min == 0) {
2094 sdata_info(sdata,
2095 "AP has invalid WMM params (missing AC %d), using defaults\n",
2096 ac);
2097 return false;
2098 }
2099 }
2100
2101 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2102 mlme_dbg(sdata,
2103 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
2104 ac, params[ac].acm,
2105 params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
2106 params[ac].txop, params[ac].uapsd,
2107 ifmgd->tx_tspec[ac].downgraded);
2108 sdata->tx_conf[ac] = params[ac];
2109 if (!ifmgd->tx_tspec[ac].downgraded &&
2110 drv_conf_tx(local, sdata, ac, ¶ms[ac]))
2111 sdata_err(sdata,
2112 "failed to set TX queue parameters for AC %d\n",
2113 ac);
2114 }
2115
2116
2117 sdata->vif.bss_conf.qos = true;
2118 return true;
2119}
2120
2121static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2122{
2123 lockdep_assert_held(&sdata->local->mtx);
2124
2125 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
2126 ieee80211_run_deferred_scan(sdata->local);
2127}
2128
2129static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2130{
2131 mutex_lock(&sdata->local->mtx);
2132 __ieee80211_stop_poll(sdata);
2133 mutex_unlock(&sdata->local->mtx);
2134}
2135
2136static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
2137 u16 capab, bool erp_valid, u8 erp)
2138{
2139 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2140 struct ieee80211_supported_band *sband;
2141 u32 changed = 0;
2142 bool use_protection;
2143 bool use_short_preamble;
2144 bool use_short_slot;
2145
2146 sband = ieee80211_get_sband(sdata);
2147 if (!sband)
2148 return changed;
2149
2150 if (erp_valid) {
2151 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
2152 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
2153 } else {
2154 use_protection = false;
2155 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
2156 }
2157
2158 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
2159 if (sband->band == NL80211_BAND_5GHZ ||
2160 sband->band == NL80211_BAND_6GHZ)
2161 use_short_slot = true;
2162
2163 if (use_protection != bss_conf->use_cts_prot) {
2164 bss_conf->use_cts_prot = use_protection;
2165 changed |= BSS_CHANGED_ERP_CTS_PROT;
2166 }
2167
2168 if (use_short_preamble != bss_conf->use_short_preamble) {
2169 bss_conf->use_short_preamble = use_short_preamble;
2170 changed |= BSS_CHANGED_ERP_PREAMBLE;
2171 }
2172
2173 if (use_short_slot != bss_conf->use_short_slot) {
2174 bss_conf->use_short_slot = use_short_slot;
2175 changed |= BSS_CHANGED_ERP_SLOT;
2176 }
2177
2178 return changed;
2179}
2180
2181static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
2182 struct cfg80211_bss *cbss,
2183 u32 bss_info_changed)
2184{
2185 struct ieee80211_bss *bss = (void *)cbss->priv;
2186 struct ieee80211_local *local = sdata->local;
2187 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2188
2189 bss_info_changed |= BSS_CHANGED_ASSOC;
2190 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
2191 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
2192
2193 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
2194 beacon_loss_count * bss_conf->beacon_int));
2195
2196 sdata->u.mgd.associated = cbss;
2197 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
2198
2199 ieee80211_check_rate_mask(sdata);
2200
2201 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
2202
2203 if (sdata->vif.p2p ||
2204 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
2205 const struct cfg80211_bss_ies *ies;
2206
2207 rcu_read_lock();
2208 ies = rcu_dereference(cbss->ies);
2209 if (ies) {
2210 int ret;
2211
2212 ret = cfg80211_get_p2p_attr(
2213 ies->data, ies->len,
2214 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
2215 (u8 *) &bss_conf->p2p_noa_attr,
2216 sizeof(bss_conf->p2p_noa_attr));
2217 if (ret >= 2) {
2218 sdata->u.mgd.p2p_noa_index =
2219 bss_conf->p2p_noa_attr.index;
2220 bss_info_changed |= BSS_CHANGED_P2P_PS;
2221 }
2222 }
2223 rcu_read_unlock();
2224 }
2225
2226
2227 ieee80211_stop_poll(sdata);
2228
2229 ieee80211_led_assoc(local, 1);
2230
2231 if (sdata->u.mgd.have_beacon) {
2232
2233
2234
2235
2236
2237
2238 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
2239 bss_conf->beacon_rate = bss->beacon_rate;
2240 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
2241 } else {
2242 bss_conf->beacon_rate = NULL;
2243 bss_conf->dtim_period = 0;
2244 }
2245
2246 bss_conf->assoc = 1;
2247
2248
2249 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
2250 bss_conf->cqm_rssi_thold)
2251 bss_info_changed |= BSS_CHANGED_CQM;
2252
2253
2254 if (bss_conf->arp_addr_cnt)
2255 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
2256
2257 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
2258
2259 mutex_lock(&local->iflist_mtx);
2260 ieee80211_recalc_ps(local);
2261 mutex_unlock(&local->iflist_mtx);
2262
2263 ieee80211_recalc_smps(sdata);
2264 ieee80211_recalc_ps_vif(sdata);
2265
2266 netif_carrier_on(sdata->dev);
2267}
2268
2269static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
2270 u16 stype, u16 reason, bool tx,
2271 u8 *frame_buf)
2272{
2273 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2274 struct ieee80211_local *local = sdata->local;
2275 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2276 u32 changed = 0;
2277 struct ieee80211_prep_tx_info info = {
2278 .subtype = stype,
2279 };
2280
2281 sdata_assert_lock(sdata);
2282
2283 if (WARN_ON_ONCE(tx && !frame_buf))
2284 return;
2285
2286 if (WARN_ON(!ifmgd->associated))
2287 return;
2288
2289 ieee80211_stop_poll(sdata);
2290
2291 ifmgd->associated = NULL;
2292 netif_carrier_off(sdata->dev);
2293
2294
2295
2296
2297
2298
2299 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
2300 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
2301 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2302 }
2303 local->ps_sdata = NULL;
2304
2305
2306 ieee80211_recalc_ps_vif(sdata);
2307
2308
2309 synchronize_net();
2310
2311
2312
2313
2314
2315
2316
2317 if (tx)
2318 ieee80211_flush_queues(local, sdata, true);
2319
2320
2321 if (tx || frame_buf) {
2322
2323
2324
2325
2326
2327
2328 if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP) &&
2329 !ifmgd->have_beacon) {
2330 drv_mgd_prepare_tx(sdata->local, sdata, &info);
2331 }
2332
2333 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid,
2334 ifmgd->bssid, stype, reason,
2335 tx, frame_buf);
2336 }
2337
2338
2339 if (tx)
2340 ieee80211_flush_queues(local, sdata, false);
2341
2342 drv_mgd_complete_tx(sdata->local, sdata, &info);
2343
2344
2345 eth_zero_addr(ifmgd->bssid);
2346
2347 sdata->vif.bss_conf.ssid_len = 0;
2348
2349
2350 sta_info_flush(sdata);
2351
2352
2353 changed |= ieee80211_reset_erp_info(sdata);
2354
2355 ieee80211_led_assoc(local, 0);
2356 changed |= BSS_CHANGED_ASSOC;
2357 sdata->vif.bss_conf.assoc = false;
2358
2359 ifmgd->p2p_noa_index = -1;
2360 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2361 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
2362
2363
2364 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2365 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
2366 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2367 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
2368
2369
2370 memset(sdata->vif.bss_conf.mu_group.membership, 0,
2371 sizeof(sdata->vif.bss_conf.mu_group.membership));
2372 memset(sdata->vif.bss_conf.mu_group.position, 0,
2373 sizeof(sdata->vif.bss_conf.mu_group.position));
2374 changed |= BSS_CHANGED_MU_GROUPS;
2375 sdata->vif.mu_mimo_owner = false;
2376
2377 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
2378
2379 del_timer_sync(&local->dynamic_ps_timer);
2380 cancel_work_sync(&local->dynamic_ps_enable_work);
2381
2382
2383 if (sdata->vif.bss_conf.arp_addr_cnt)
2384 changed |= BSS_CHANGED_ARP_FILTER;
2385
2386 sdata->vif.bss_conf.qos = false;
2387 changed |= BSS_CHANGED_QOS;
2388
2389
2390 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
2391 ieee80211_bss_info_change_notify(sdata, changed);
2392
2393
2394 ieee80211_set_wmm_default(sdata, false, false);
2395
2396 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2397 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2398 del_timer_sync(&sdata->u.mgd.timer);
2399 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2400
2401 sdata->vif.bss_conf.dtim_period = 0;
2402 sdata->vif.bss_conf.beacon_rate = NULL;
2403
2404 ifmgd->have_beacon = false;
2405
2406 ifmgd->flags = 0;
2407 mutex_lock(&local->mtx);
2408 ieee80211_vif_release_channel(sdata);
2409
2410 sdata->vif.csa_active = false;
2411 ifmgd->csa_waiting_bcn = false;
2412 ifmgd->csa_ignored_same_chan = false;
2413 if (sdata->csa_block_tx) {
2414 ieee80211_wake_vif_queues(local, sdata,
2415 IEEE80211_QUEUE_STOP_REASON_CSA);
2416 sdata->csa_block_tx = false;
2417 }
2418 mutex_unlock(&local->mtx);
2419
2420
2421 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2422 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2423
2424 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
2425
2426 bss_conf->pwr_reduction = 0;
2427 bss_conf->tx_pwr_env_num = 0;
2428 memset(bss_conf->tx_pwr_env, 0, sizeof(bss_conf->tx_pwr_env));
2429}
2430
2431static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2432{
2433 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2434 struct ieee80211_local *local = sdata->local;
2435
2436 mutex_lock(&local->mtx);
2437 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2438 goto out;
2439
2440 __ieee80211_stop_poll(sdata);
2441
2442 mutex_lock(&local->iflist_mtx);
2443 ieee80211_recalc_ps(local);
2444 mutex_unlock(&local->iflist_mtx);
2445
2446 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
2447 goto out;
2448
2449
2450
2451
2452
2453
2454 ieee80211_sta_reset_beacon_monitor(sdata);
2455
2456 mod_timer(&ifmgd->conn_mon_timer,
2457 round_jiffies_up(jiffies +
2458 IEEE80211_CONNECTION_IDLE_TIME));
2459out:
2460 mutex_unlock(&local->mtx);
2461}
2462
2463static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2464 struct ieee80211_hdr *hdr,
2465 u16 tx_time)
2466{
2467 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2468 u16 tid;
2469 int ac;
2470 struct ieee80211_sta_tx_tspec *tx_tspec;
2471 unsigned long now = jiffies;
2472
2473 if (!ieee80211_is_data_qos(hdr->frame_control))
2474 return;
2475
2476 tid = ieee80211_get_tid(hdr);
2477 ac = ieee80211_ac_from_tid(tid);
2478 tx_tspec = &ifmgd->tx_tspec[ac];
2479
2480 if (likely(!tx_tspec->admitted_time))
2481 return;
2482
2483 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2484 tx_tspec->consumed_tx_time = 0;
2485 tx_tspec->time_slice_start = now;
2486
2487 if (tx_tspec->downgraded) {
2488 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2489 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2490 }
2491 }
2492
2493 if (tx_tspec->downgraded)
2494 return;
2495
2496 tx_tspec->consumed_tx_time += tx_time;
2497
2498 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2499 tx_tspec->downgraded = true;
2500 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2501 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2502 }
2503}
2504
2505void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2506 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
2507{
2508 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2509
2510 if (!ieee80211_is_any_nullfunc(hdr->frame_control) ||
2511 !sdata->u.mgd.probe_send_count)
2512 return;
2513
2514 if (ack)
2515 sdata->u.mgd.probe_send_count = 0;
2516 else
2517 sdata->u.mgd.nullfunc_failed = true;
2518 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
2519}
2520
2521static void ieee80211_mlme_send_probe_req(struct ieee80211_sub_if_data *sdata,
2522 const u8 *src, const u8 *dst,
2523 const u8 *ssid, size_t ssid_len,
2524 struct ieee80211_channel *channel)
2525{
2526 struct sk_buff *skb;
2527
2528 skb = ieee80211_build_probe_req(sdata, src, dst, (u32)-1, channel,
2529 ssid, ssid_len, NULL, 0,
2530 IEEE80211_PROBE_FLAG_DIRECTED);
2531 if (skb)
2532 ieee80211_tx_skb(sdata, skb);
2533}
2534
2535static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2536{
2537 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2538 const struct element *ssid;
2539 u8 *dst = ifmgd->associated->bssid;
2540 u8 unicast_limit = max(1, max_probe_tries - 3);
2541 struct sta_info *sta;
2542
2543
2544
2545
2546
2547
2548 if (ifmgd->probe_send_count >= unicast_limit)
2549 dst = NULL;
2550
2551
2552
2553
2554
2555
2556
2557
2558 ifmgd->probe_send_count++;
2559
2560 if (dst) {
2561 mutex_lock(&sdata->local->sta_mtx);
2562 sta = sta_info_get(sdata, dst);
2563 if (!WARN_ON(!sta))
2564 ieee80211_check_fast_rx(sta);
2565 mutex_unlock(&sdata->local->sta_mtx);
2566 }
2567
2568 if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
2569 ifmgd->nullfunc_failed = false;
2570 ieee80211_send_nullfunc(sdata->local, sdata, false);
2571 } else {
2572 int ssid_len;
2573
2574 rcu_read_lock();
2575 ssid = ieee80211_bss_get_elem(ifmgd->associated, WLAN_EID_SSID);
2576 if (WARN_ON_ONCE(ssid == NULL))
2577 ssid_len = 0;
2578 else
2579 ssid_len = ssid->datalen;
2580
2581 ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst,
2582 ssid->data, ssid_len,
2583 ifmgd->associated->channel);
2584 rcu_read_unlock();
2585 }
2586
2587 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
2588 run_again(sdata, ifmgd->probe_timeout);
2589}
2590
2591static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2592 bool beacon)
2593{
2594 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2595 bool already = false;
2596
2597 if (!ieee80211_sdata_running(sdata))
2598 return;
2599
2600 sdata_lock(sdata);
2601
2602 if (!ifmgd->associated)
2603 goto out;
2604
2605 mutex_lock(&sdata->local->mtx);
2606
2607 if (sdata->local->tmp_channel || sdata->local->scanning) {
2608 mutex_unlock(&sdata->local->mtx);
2609 goto out;
2610 }
2611
2612 if (sdata->local->suspending) {
2613
2614 mutex_unlock(&sdata->local->mtx);
2615 ieee80211_reset_ap_probe(sdata);
2616 goto out;
2617 }
2618
2619 if (beacon) {
2620 mlme_dbg_ratelimited(sdata,
2621 "detected beacon loss from AP (missed %d beacons) - probing\n",
2622 beacon_loss_count);
2623
2624 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
2625 }
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
2639 already = true;
2640
2641 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2642
2643 mutex_unlock(&sdata->local->mtx);
2644
2645 if (already)
2646 goto out;
2647
2648 mutex_lock(&sdata->local->iflist_mtx);
2649 ieee80211_recalc_ps(sdata->local);
2650 mutex_unlock(&sdata->local->iflist_mtx);
2651
2652 ifmgd->probe_send_count = 0;
2653 ieee80211_mgd_probe_ap_send(sdata);
2654 out:
2655 sdata_unlock(sdata);
2656}
2657
2658struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2659 struct ieee80211_vif *vif)
2660{
2661 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2662 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2663 struct cfg80211_bss *cbss;
2664 struct sk_buff *skb;
2665 const struct element *ssid;
2666 int ssid_len;
2667
2668 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2669 return NULL;
2670
2671 sdata_assert_lock(sdata);
2672
2673 if (ifmgd->associated)
2674 cbss = ifmgd->associated;
2675 else if (ifmgd->auth_data)
2676 cbss = ifmgd->auth_data->bss;
2677 else if (ifmgd->assoc_data)
2678 cbss = ifmgd->assoc_data->bss;
2679 else
2680 return NULL;
2681
2682 rcu_read_lock();
2683 ssid = ieee80211_bss_get_elem(cbss, WLAN_EID_SSID);
2684 if (WARN_ONCE(!ssid || ssid->datalen > IEEE80211_MAX_SSID_LEN,
2685 "invalid SSID element (len=%d)",
2686 ssid ? ssid->datalen : -1))
2687 ssid_len = 0;
2688 else
2689 ssid_len = ssid->datalen;
2690
2691 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
2692 (u32) -1, cbss->channel,
2693 ssid->data, ssid_len,
2694 NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED);
2695 rcu_read_unlock();
2696
2697 return skb;
2698}
2699EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2700
2701static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
2702 const u8 *buf, size_t len, bool tx,
2703 u16 reason, bool reconnect)
2704{
2705 struct ieee80211_event event = {
2706 .type = MLME_EVENT,
2707 .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
2708 .u.mlme.reason = reason,
2709 };
2710
2711 if (tx)
2712 cfg80211_tx_mlme_mgmt(sdata->dev, buf, len, reconnect);
2713 else
2714 cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
2715
2716 drv_event_callback(sdata->local, sdata, &event);
2717}
2718
2719static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
2720{
2721 struct ieee80211_local *local = sdata->local;
2722 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2723 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
2724 bool tx;
2725
2726 sdata_lock(sdata);
2727 if (!ifmgd->associated) {
2728 sdata_unlock(sdata);
2729 return;
2730 }
2731
2732 tx = !sdata->csa_block_tx;
2733
2734 if (!ifmgd->driver_disconnect) {
2735
2736
2737
2738
2739 cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated);
2740 }
2741
2742 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2743 ifmgd->driver_disconnect ?
2744 WLAN_REASON_DEAUTH_LEAVING :
2745 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
2746 tx, frame_buf);
2747 mutex_lock(&local->mtx);
2748 sdata->vif.csa_active = false;
2749 ifmgd->csa_waiting_bcn = false;
2750 if (sdata->csa_block_tx) {
2751 ieee80211_wake_vif_queues(local, sdata,
2752 IEEE80211_QUEUE_STOP_REASON_CSA);
2753 sdata->csa_block_tx = false;
2754 }
2755 mutex_unlock(&local->mtx);
2756
2757 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx,
2758 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
2759 ifmgd->reconnect);
2760 ifmgd->reconnect = false;
2761
2762 sdata_unlock(sdata);
2763}
2764
2765static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
2766{
2767 struct ieee80211_sub_if_data *sdata =
2768 container_of(work, struct ieee80211_sub_if_data,
2769 u.mgd.beacon_connection_loss_work);
2770 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2771
2772 if (ifmgd->associated)
2773 ifmgd->beacon_loss_count++;
2774
2775 if (ifmgd->connection_loss) {
2776 sdata_info(sdata, "Connection to AP %pM lost\n",
2777 ifmgd->bssid);
2778 __ieee80211_disconnect(sdata);
2779 ifmgd->connection_loss = false;
2780 } else if (ifmgd->driver_disconnect) {
2781 sdata_info(sdata,
2782 "Driver requested disconnection from AP %pM\n",
2783 ifmgd->bssid);
2784 __ieee80211_disconnect(sdata);
2785 ifmgd->driver_disconnect = false;
2786 } else {
2787 ieee80211_mgd_probe_ap(sdata, true);
2788 }
2789}
2790
2791static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2792{
2793 struct ieee80211_sub_if_data *sdata =
2794 container_of(work, struct ieee80211_sub_if_data,
2795 u.mgd.csa_connection_drop_work);
2796
2797 __ieee80211_disconnect(sdata);
2798}
2799
2800void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2801{
2802 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2803 struct ieee80211_hw *hw = &sdata->local->hw;
2804
2805 trace_api_beacon_loss(sdata);
2806
2807 sdata->u.mgd.connection_loss = false;
2808 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2809}
2810EXPORT_SYMBOL(ieee80211_beacon_loss);
2811
2812void ieee80211_connection_loss(struct ieee80211_vif *vif)
2813{
2814 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2815 struct ieee80211_hw *hw = &sdata->local->hw;
2816
2817 trace_api_connection_loss(sdata);
2818
2819 sdata->u.mgd.connection_loss = true;
2820 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2821}
2822EXPORT_SYMBOL(ieee80211_connection_loss);
2823
2824void ieee80211_disconnect(struct ieee80211_vif *vif, bool reconnect)
2825{
2826 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2827 struct ieee80211_hw *hw = &sdata->local->hw;
2828
2829 trace_api_disconnect(sdata, reconnect);
2830
2831 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2832 return;
2833
2834 sdata->u.mgd.driver_disconnect = true;
2835 sdata->u.mgd.reconnect = reconnect;
2836 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2837}
2838EXPORT_SYMBOL(ieee80211_disconnect);
2839
2840static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2841 bool assoc)
2842{
2843 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2844
2845 sdata_assert_lock(sdata);
2846
2847 if (!assoc) {
2848
2849
2850
2851
2852
2853 del_timer_sync(&sdata->u.mgd.timer);
2854 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2855
2856 eth_zero_addr(sdata->u.mgd.bssid);
2857 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2858 sdata->u.mgd.flags = 0;
2859 mutex_lock(&sdata->local->mtx);
2860 ieee80211_vif_release_channel(sdata);
2861 mutex_unlock(&sdata->local->mtx);
2862 }
2863
2864 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
2865 kfree(auth_data);
2866 sdata->u.mgd.auth_data = NULL;
2867}
2868
2869static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2870 bool assoc, bool abandon)
2871{
2872 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2873
2874 sdata_assert_lock(sdata);
2875
2876 if (!assoc) {
2877
2878
2879
2880
2881
2882 del_timer_sync(&sdata->u.mgd.timer);
2883 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2884
2885 eth_zero_addr(sdata->u.mgd.bssid);
2886 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2887 sdata->u.mgd.flags = 0;
2888 sdata->vif.mu_mimo_owner = false;
2889
2890 mutex_lock(&sdata->local->mtx);
2891 ieee80211_vif_release_channel(sdata);
2892 mutex_unlock(&sdata->local->mtx);
2893
2894 if (abandon)
2895 cfg80211_abandon_assoc(sdata->dev, assoc_data->bss);
2896 }
2897
2898 kfree(assoc_data);
2899 sdata->u.mgd.assoc_data = NULL;
2900}
2901
2902static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2903 struct ieee80211_mgmt *mgmt, size_t len)
2904{
2905 struct ieee80211_local *local = sdata->local;
2906 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2907 const struct element *challenge;
2908 u8 *pos;
2909 u32 tx_flags = 0;
2910 struct ieee80211_prep_tx_info info = {
2911 .subtype = IEEE80211_STYPE_AUTH,
2912 };
2913
2914 pos = mgmt->u.auth.variable;
2915 challenge = cfg80211_find_elem(WLAN_EID_CHALLENGE, pos,
2916 len - (pos - (u8 *)mgmt));
2917 if (!challenge)
2918 return;
2919 auth_data->expected_transaction = 4;
2920 drv_mgd_prepare_tx(sdata->local, sdata, &info);
2921 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
2922 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2923 IEEE80211_TX_INTFL_MLME_CONN_TX;
2924 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
2925 (void *)challenge,
2926 challenge->datalen + sizeof(*challenge),
2927 auth_data->bss->bssid, auth_data->bss->bssid,
2928 auth_data->key, auth_data->key_len,
2929 auth_data->key_idx, tx_flags);
2930}
2931
2932static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata,
2933 const u8 *bssid)
2934{
2935 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2936 struct sta_info *sta;
2937 bool result = true;
2938
2939 sdata_info(sdata, "authenticated\n");
2940 ifmgd->auth_data->done = true;
2941 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
2942 ifmgd->auth_data->timeout_started = true;
2943 run_again(sdata, ifmgd->auth_data->timeout);
2944
2945
2946 mutex_lock(&sdata->local->sta_mtx);
2947 sta = sta_info_get(sdata, bssid);
2948 if (!sta) {
2949 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2950 result = false;
2951 goto out;
2952 }
2953 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
2954 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
2955 result = false;
2956 goto out;
2957 }
2958
2959out:
2960 mutex_unlock(&sdata->local->sta_mtx);
2961 return result;
2962}
2963
2964static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2965 struct ieee80211_mgmt *mgmt, size_t len)
2966{
2967 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2968 u8 bssid[ETH_ALEN];
2969 u16 auth_alg, auth_transaction, status_code;
2970 struct ieee80211_event event = {
2971 .type = MLME_EVENT,
2972 .u.mlme.data = AUTH_EVENT,
2973 };
2974 struct ieee80211_prep_tx_info info = {
2975 .subtype = IEEE80211_STYPE_AUTH,
2976 };
2977
2978 sdata_assert_lock(sdata);
2979
2980 if (len < 24 + 6)
2981 return;
2982
2983 if (!ifmgd->auth_data || ifmgd->auth_data->done)
2984 return;
2985
2986 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2987
2988 if (!ether_addr_equal(bssid, mgmt->bssid))
2989 return;
2990
2991 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2992 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2993 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2994
2995 if (auth_alg != ifmgd->auth_data->algorithm ||
2996 (auth_alg != WLAN_AUTH_SAE &&
2997 auth_transaction != ifmgd->auth_data->expected_transaction) ||
2998 (auth_alg == WLAN_AUTH_SAE &&
2999 (auth_transaction < ifmgd->auth_data->expected_transaction ||
3000 auth_transaction > 2))) {
3001 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
3002 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
3003 auth_transaction,
3004 ifmgd->auth_data->expected_transaction);
3005 goto notify_driver;
3006 }
3007
3008 if (status_code != WLAN_STATUS_SUCCESS) {
3009 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3010
3011 if (auth_alg == WLAN_AUTH_SAE &&
3012 (status_code == WLAN_STATUS_ANTI_CLOG_REQUIRED ||
3013 (auth_transaction == 1 &&
3014 (status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
3015 status_code == WLAN_STATUS_SAE_PK)))) {
3016
3017 ifmgd->auth_data->waiting = true;
3018 ifmgd->auth_data->timeout =
3019 jiffies + IEEE80211_AUTH_WAIT_SAE_RETRY;
3020 ifmgd->auth_data->timeout_started = true;
3021 run_again(sdata, ifmgd->auth_data->timeout);
3022 goto notify_driver;
3023 }
3024
3025 sdata_info(sdata, "%pM denied authentication (status %d)\n",
3026 mgmt->sa, status_code);
3027 ieee80211_destroy_auth_data(sdata, false);
3028 event.u.mlme.status = MLME_DENIED;
3029 event.u.mlme.reason = status_code;
3030 drv_event_callback(sdata->local, sdata, &event);
3031 goto notify_driver;
3032 }
3033
3034 switch (ifmgd->auth_data->algorithm) {
3035 case WLAN_AUTH_OPEN:
3036 case WLAN_AUTH_LEAP:
3037 case WLAN_AUTH_FT:
3038 case WLAN_AUTH_SAE:
3039 case WLAN_AUTH_FILS_SK:
3040 case WLAN_AUTH_FILS_SK_PFS:
3041 case WLAN_AUTH_FILS_PK:
3042 break;
3043 case WLAN_AUTH_SHARED_KEY:
3044 if (ifmgd->auth_data->expected_transaction != 4) {
3045 ieee80211_auth_challenge(sdata, mgmt, len);
3046
3047 return;
3048 }
3049 break;
3050 default:
3051 WARN_ONCE(1, "invalid auth alg %d",
3052 ifmgd->auth_data->algorithm);
3053 goto notify_driver;
3054 }
3055
3056 event.u.mlme.status = MLME_SUCCESS;
3057 info.success = 1;
3058 drv_event_callback(sdata->local, sdata, &event);
3059 if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE ||
3060 (auth_transaction == 2 &&
3061 ifmgd->auth_data->expected_transaction == 2)) {
3062 if (!ieee80211_mark_sta_auth(sdata, bssid))
3063 return;
3064 } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
3065 auth_transaction == 2) {
3066 sdata_info(sdata, "SAE peer confirmed\n");
3067 ifmgd->auth_data->peer_confirmed = true;
3068 }
3069
3070 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3071notify_driver:
3072 drv_mgd_complete_tx(sdata->local, sdata, &info);
3073}
3074
3075#define case_WLAN(type) \
3076 case WLAN_REASON_##type: return #type
3077
3078const char *ieee80211_get_reason_code_string(u16 reason_code)
3079{
3080 switch (reason_code) {
3081 case_WLAN(UNSPECIFIED);
3082 case_WLAN(PREV_AUTH_NOT_VALID);
3083 case_WLAN(DEAUTH_LEAVING);
3084 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
3085 case_WLAN(DISASSOC_AP_BUSY);
3086 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
3087 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
3088 case_WLAN(DISASSOC_STA_HAS_LEFT);
3089 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
3090 case_WLAN(DISASSOC_BAD_POWER);
3091 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
3092 case_WLAN(INVALID_IE);
3093 case_WLAN(MIC_FAILURE);
3094 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
3095 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
3096 case_WLAN(IE_DIFFERENT);
3097 case_WLAN(INVALID_GROUP_CIPHER);
3098 case_WLAN(INVALID_PAIRWISE_CIPHER);
3099 case_WLAN(INVALID_AKMP);
3100 case_WLAN(UNSUPP_RSN_VERSION);
3101 case_WLAN(INVALID_RSN_IE_CAP);
3102 case_WLAN(IEEE8021X_FAILED);
3103 case_WLAN(CIPHER_SUITE_REJECTED);
3104 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
3105 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
3106 case_WLAN(DISASSOC_LOW_ACK);
3107 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
3108 case_WLAN(QSTA_LEAVE_QBSS);
3109 case_WLAN(QSTA_NOT_USE);
3110 case_WLAN(QSTA_REQUIRE_SETUP);
3111 case_WLAN(QSTA_TIMEOUT);
3112 case_WLAN(QSTA_CIPHER_NOT_SUPP);
3113 case_WLAN(MESH_PEER_CANCELED);
3114 case_WLAN(MESH_MAX_PEERS);
3115 case_WLAN(MESH_CONFIG);
3116 case_WLAN(MESH_CLOSE);
3117 case_WLAN(MESH_MAX_RETRIES);
3118 case_WLAN(MESH_CONFIRM_TIMEOUT);
3119 case_WLAN(MESH_INVALID_GTK);
3120 case_WLAN(MESH_INCONSISTENT_PARAM);
3121 case_WLAN(MESH_INVALID_SECURITY);
3122 case_WLAN(MESH_PATH_ERROR);
3123 case_WLAN(MESH_PATH_NOFORWARD);
3124 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
3125 case_WLAN(MAC_EXISTS_IN_MBSS);
3126 case_WLAN(MESH_CHAN_REGULATORY);
3127 case_WLAN(MESH_CHAN);
3128 default: return "<unknown>";
3129 }
3130}
3131
3132static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
3133 struct ieee80211_mgmt *mgmt, size_t len)
3134{
3135 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3136 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
3137
3138 sdata_assert_lock(sdata);
3139
3140 if (len < 24 + 2)
3141 return;
3142
3143 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3144 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3145 return;
3146 }
3147
3148 if (ifmgd->associated &&
3149 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) {
3150 const u8 *bssid = ifmgd->associated->bssid;
3151
3152 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
3153 bssid, reason_code,
3154 ieee80211_get_reason_code_string(reason_code));
3155
3156 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3157
3158 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
3159 reason_code, false);
3160 return;
3161 }
3162
3163 if (ifmgd->assoc_data &&
3164 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
3165 const u8 *bssid = ifmgd->assoc_data->bss->bssid;
3166
3167 sdata_info(sdata,
3168 "deauthenticated from %pM while associating (Reason: %u=%s)\n",
3169 bssid, reason_code,
3170 ieee80211_get_reason_code_string(reason_code));
3171
3172 ieee80211_destroy_assoc_data(sdata, false, true);
3173
3174 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3175 return;
3176 }
3177}
3178
3179
3180static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
3181 struct ieee80211_mgmt *mgmt, size_t len)
3182{
3183 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3184 u16 reason_code;
3185
3186 sdata_assert_lock(sdata);
3187
3188 if (len < 24 + 2)
3189 return;
3190
3191 if (!ifmgd->associated ||
3192 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3193 return;
3194
3195 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
3196
3197 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3198 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3199 return;
3200 }
3201
3202 sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n",
3203 mgmt->sa, reason_code,
3204 ieee80211_get_reason_code_string(reason_code));
3205
3206 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3207
3208 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code,
3209 false);
3210}
3211
3212static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
3213 u8 *supp_rates, unsigned int supp_rates_len,
3214 u32 *rates, u32 *basic_rates,
3215 bool *have_higher_than_11mbit,
3216 int *min_rate, int *min_rate_index,
3217 int shift)
3218{
3219 int i, j;
3220
3221 for (i = 0; i < supp_rates_len; i++) {
3222 int rate = supp_rates[i] & 0x7f;
3223 bool is_basic = !!(supp_rates[i] & 0x80);
3224
3225 if ((rate * 5 * (1 << shift)) > 110)
3226 *have_higher_than_11mbit = true;
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236 if (supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY) ||
3237 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY) ||
3238 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HE_PHY) ||
3239 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_SAE_H2E))
3240 continue;
3241
3242 for (j = 0; j < sband->n_bitrates; j++) {
3243 struct ieee80211_rate *br;
3244 int brate;
3245
3246 br = &sband->bitrates[j];
3247
3248 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3249 if (brate == rate) {
3250 *rates |= BIT(j);
3251 if (is_basic)
3252 *basic_rates |= BIT(j);
3253 if ((rate * 5) < *min_rate) {
3254 *min_rate = rate * 5;
3255 *min_rate_index = j;
3256 }
3257 break;
3258 }
3259 }
3260 }
3261}
3262
3263static bool ieee80211_twt_req_supported(const struct sta_info *sta,
3264 const struct ieee802_11_elems *elems)
3265{
3266 if (elems->ext_capab_len < 10)
3267 return false;
3268
3269 if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT))
3270 return false;
3271
3272 return sta->sta.he_cap.he_cap_elem.mac_cap_info[0] &
3273 IEEE80211_HE_MAC_CAP0_TWT_RES;
3274}
3275
3276static int ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata,
3277 struct sta_info *sta,
3278 struct ieee802_11_elems *elems)
3279{
3280 bool twt = ieee80211_twt_req_supported(sta, elems);
3281
3282 if (sdata->vif.bss_conf.twt_requester != twt) {
3283 sdata->vif.bss_conf.twt_requester = twt;
3284 return BSS_CHANGED_TWT;
3285 }
3286 return 0;
3287}
3288
3289static bool ieee80211_twt_bcast_support(struct ieee80211_sub_if_data *sdata,
3290 struct ieee80211_bss_conf *bss_conf,
3291 struct ieee80211_supported_band *sband,
3292 struct sta_info *sta)
3293{
3294 const struct ieee80211_sta_he_cap *own_he_cap =
3295 ieee80211_get_he_iftype_cap(sband,
3296 ieee80211_vif_type_p2p(&sdata->vif));
3297
3298 return bss_conf->he_support &&
3299 (sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3300 IEEE80211_HE_MAC_CAP2_BCAST_TWT) &&
3301 own_he_cap &&
3302 (own_he_cap->he_cap_elem.mac_cap_info[2] &
3303 IEEE80211_HE_MAC_CAP2_BCAST_TWT);
3304}
3305
3306static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
3307 struct cfg80211_bss *cbss,
3308 struct ieee80211_mgmt *mgmt, size_t len,
3309 struct ieee802_11_elems *elems)
3310{
3311 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3312 struct ieee80211_local *local = sdata->local;
3313 struct ieee80211_supported_band *sband;
3314 struct sta_info *sta;
3315 u16 capab_info, aid;
3316 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3317 const struct cfg80211_bss_ies *bss_ies = NULL;
3318 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3319 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
3320 bool is_s1g = cbss->channel->band == NL80211_BAND_S1GHZ;
3321 u32 changed = 0;
3322 u8 *pos;
3323 int err;
3324 bool ret;
3325
3326
3327
3328 pos = mgmt->u.assoc_resp.variable;
3329 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3330 if (is_s1g) {
3331 pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
3332 aid = 0;
3333 }
3334 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3335 elems = ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false,
3336 mgmt->bssid, assoc_data->bss->bssid);
3337
3338 if (!elems)
3339 return false;
3340
3341 if (elems->aid_resp)
3342 aid = le16_to_cpu(elems->aid_resp->aid);
3343
3344
3345
3346
3347
3348 aid &= 0x7ff;
3349
3350 ifmgd->broken_ap = false;
3351
3352 if (aid == 0 || aid > IEEE80211_MAX_AID) {
3353 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
3354 aid);
3355 aid = 0;
3356 ifmgd->broken_ap = true;
3357 }
3358
3359 if (!is_s1g && !elems->supp_rates) {
3360 sdata_info(sdata, "no SuppRates element in AssocResp\n");
3361 ret = false;
3362 goto out;
3363 }
3364
3365 sdata->vif.bss_conf.aid = aid;
3366 ifmgd->tdls_chan_switch_prohibited =
3367 elems->ext_capab && elems->ext_capab_len >= 5 &&
3368 (elems->ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
3369
3370
3371
3372
3373
3374
3375
3376
3377 if (!is_6ghz &&
3378 ((assoc_data->wmm && !elems->wmm_param) ||
3379 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3380 (!elems->ht_cap_elem || !elems->ht_operation)) ||
3381 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3382 (!elems->vht_cap_elem || !elems->vht_operation)))) {
3383 const struct cfg80211_bss_ies *ies;
3384 struct ieee802_11_elems *bss_elems;
3385
3386 rcu_read_lock();
3387 ies = rcu_dereference(cbss->ies);
3388 if (ies)
3389 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
3390 GFP_ATOMIC);
3391 rcu_read_unlock();
3392 if (!bss_ies) {
3393 ret = false;
3394 goto out;
3395 }
3396
3397 bss_elems = ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
3398 false, mgmt->bssid,
3399 assoc_data->bss->bssid);
3400 if (!bss_elems) {
3401 ret = false;
3402 goto out;
3403 }
3404
3405 if (assoc_data->wmm &&
3406 !elems->wmm_param && bss_elems->wmm_param) {
3407 elems->wmm_param = bss_elems->wmm_param;
3408 sdata_info(sdata,
3409 "AP bug: WMM param missing from AssocResp\n");
3410 }
3411
3412
3413
3414
3415
3416 if (!elems->ht_cap_elem && bss_elems->ht_cap_elem &&
3417 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
3418 elems->ht_cap_elem = bss_elems->ht_cap_elem;
3419 sdata_info(sdata,
3420 "AP bug: HT capability missing from AssocResp\n");
3421 }
3422 if (!elems->ht_operation && bss_elems->ht_operation &&
3423 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
3424 elems->ht_operation = bss_elems->ht_operation;
3425 sdata_info(sdata,
3426 "AP bug: HT operation missing from AssocResp\n");
3427 }
3428 if (!elems->vht_cap_elem && bss_elems->vht_cap_elem &&
3429 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
3430 elems->vht_cap_elem = bss_elems->vht_cap_elem;
3431 sdata_info(sdata,
3432 "AP bug: VHT capa missing from AssocResp\n");
3433 }
3434 if (!elems->vht_operation && bss_elems->vht_operation &&
3435 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
3436 elems->vht_operation = bss_elems->vht_operation;
3437 sdata_info(sdata,
3438 "AP bug: VHT operation missing from AssocResp\n");
3439 }
3440
3441 kfree(bss_elems);
3442 }
3443
3444
3445
3446
3447
3448 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3449 (!elems->wmm_param || !elems->ht_cap_elem || !elems->ht_operation)) {
3450 sdata_info(sdata,
3451 "HT AP is missing WMM params or HT capability/operation\n");
3452 ret = false;
3453 goto out;
3454 }
3455
3456 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3457 (!elems->vht_cap_elem || !elems->vht_operation)) {
3458 sdata_info(sdata,
3459 "VHT AP is missing VHT capability/operation\n");
3460 ret = false;
3461 goto out;
3462 }
3463
3464 if (is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3465 !elems->he_6ghz_capa) {
3466 sdata_info(sdata,
3467 "HE 6 GHz AP is missing HE 6 GHz band capability\n");
3468 ret = false;
3469 goto out;
3470 }
3471
3472 mutex_lock(&sdata->local->sta_mtx);
3473
3474
3475
3476
3477 sta = sta_info_get(sdata, cbss->bssid);
3478 if (WARN_ON(!sta)) {
3479 mutex_unlock(&sdata->local->sta_mtx);
3480 ret = false;
3481 goto out;
3482 }
3483
3484 sband = ieee80211_get_sband(sdata);
3485 if (!sband) {
3486 mutex_unlock(&sdata->local->sta_mtx);
3487 ret = false;
3488 goto out;
3489 }
3490
3491 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3492 (!elems->he_cap || !elems->he_operation)) {
3493 mutex_unlock(&sdata->local->sta_mtx);
3494 sdata_info(sdata,
3495 "HE AP is missing HE capability/operation\n");
3496 ret = false;
3497 goto out;
3498 }
3499
3500
3501 if (elems->ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
3502 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
3503 elems->ht_cap_elem, sta);
3504
3505 if (elems->vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
3506 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
3507 elems->vht_cap_elem, sta);
3508
3509 if (elems->he_operation && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3510 elems->he_cap) {
3511 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
3512 elems->he_cap,
3513 elems->he_cap_len,
3514 elems->he_6ghz_capa,
3515 sta);
3516
3517 bss_conf->he_support = sta->sta.he_cap.has_he;
3518 if (elems->rsnx && elems->rsnx_len &&
3519 (elems->rsnx[0] & WLAN_RSNX_CAPA_PROTECTED_TWT) &&
3520 wiphy_ext_feature_isset(local->hw.wiphy,
3521 NL80211_EXT_FEATURE_PROTECTED_TWT))
3522 bss_conf->twt_protected = true;
3523 else
3524 bss_conf->twt_protected = false;
3525
3526 changed |= ieee80211_recalc_twt_req(sdata, sta, elems);
3527 } else {
3528 bss_conf->he_support = false;
3529 bss_conf->twt_requester = false;
3530 bss_conf->twt_protected = false;
3531 }
3532
3533 bss_conf->twt_broadcast =
3534 ieee80211_twt_bcast_support(sdata, bss_conf, sband, sta);
3535
3536 if (bss_conf->he_support) {
3537 bss_conf->he_bss_color.color =
3538 le32_get_bits(elems->he_operation->he_oper_params,
3539 IEEE80211_HE_OPERATION_BSS_COLOR_MASK);
3540 bss_conf->he_bss_color.partial =
3541 le32_get_bits(elems->he_operation->he_oper_params,
3542 IEEE80211_HE_OPERATION_PARTIAL_BSS_COLOR);
3543 bss_conf->he_bss_color.enabled =
3544 !le32_get_bits(elems->he_operation->he_oper_params,
3545 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3546
3547 if (bss_conf->he_bss_color.enabled)
3548 changed |= BSS_CHANGED_HE_BSS_COLOR;
3549
3550 bss_conf->htc_trig_based_pkt_ext =
3551 le32_get_bits(elems->he_operation->he_oper_params,
3552 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
3553 bss_conf->frame_time_rts_th =
3554 le32_get_bits(elems->he_operation->he_oper_params,
3555 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3556
3557 bss_conf->uora_exists = !!elems->uora_element;
3558 if (elems->uora_element)
3559 bss_conf->uora_ocw_range = elems->uora_element[0];
3560
3561 ieee80211_he_op_ie_to_bss_conf(&sdata->vif, elems->he_operation);
3562 ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems->he_spr);
3563
3564 }
3565
3566 if (cbss->transmitted_bss) {
3567 bss_conf->nontransmitted = true;
3568 ether_addr_copy(bss_conf->transmitter_bssid,
3569 cbss->transmitted_bss->bssid);
3570 bss_conf->bssid_indicator = cbss->max_bssid_indicator;
3571 bss_conf->bssid_index = cbss->bssid_index;
3572 }
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586 if (elems->opmode_notif &&
3587 !(*elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
3588 u8 nss;
3589
3590 nss = *elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
3591 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
3592 nss += 1;
3593 sta->sta.rx_nss = nss;
3594 }
3595
3596 rate_control_rate_init(sta);
3597
3598 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
3599 set_sta_flag(sta, WLAN_STA_MFP);
3600 sta->sta.mfp = true;
3601 } else {
3602 sta->sta.mfp = false;
3603 }
3604
3605 sta->sta.wme = (elems->wmm_param || elems->s1g_capab) &&
3606 local->hw.queues >= IEEE80211_NUM_ACS;
3607
3608 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
3609 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
3610 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
3611 if (err) {
3612 sdata_info(sdata,
3613 "failed to move station %pM to desired state\n",
3614 sta->sta.addr);
3615 WARN_ON(__sta_info_destroy(sta));
3616 mutex_unlock(&sdata->local->sta_mtx);
3617 ret = false;
3618 goto out;
3619 }
3620
3621 if (sdata->wdev.use_4addr)
3622 drv_sta_set_4addr(local, sdata, &sta->sta, true);
3623
3624 mutex_unlock(&sdata->local->sta_mtx);
3625
3626
3627
3628
3629
3630
3631
3632 ifmgd->wmm_last_param_set = -1;
3633 ifmgd->mu_edca_last_param_set = -1;
3634
3635 if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
3636 ieee80211_set_wmm_default(sdata, false, false);
3637 } else if (!ieee80211_sta_wmm_params(local, sdata, elems->wmm_param,
3638 elems->wmm_param_len,
3639 elems->mu_edca_param_set)) {
3640
3641 ieee80211_set_wmm_default(sdata, false, true);
3642
3643
3644
3645
3646
3647
3648
3649 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
3650 }
3651 changed |= BSS_CHANGED_QOS;
3652
3653 if (elems->max_idle_period_ie) {
3654 bss_conf->max_idle_period =
3655 le16_to_cpu(elems->max_idle_period_ie->max_idle_period);
3656 bss_conf->protected_keep_alive =
3657 !!(elems->max_idle_period_ie->idle_options &
3658 WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE);
3659 changed |= BSS_CHANGED_KEEP_ALIVE;
3660 } else {
3661 bss_conf->max_idle_period = 0;
3662 bss_conf->protected_keep_alive = false;
3663 }
3664
3665
3666
3667 bss_conf->assoc_capability = capab_info;
3668 ieee80211_set_associated(sdata, cbss, changed);
3669
3670
3671
3672
3673
3674 if (ifmgd->use_4addr)
3675 ieee80211_send_4addr_nullfunc(local, sdata);
3676
3677
3678
3679
3680
3681 ieee80211_sta_reset_beacon_monitor(sdata);
3682 ieee80211_sta_reset_conn_monitor(sdata);
3683
3684 ret = true;
3685 out:
3686 kfree(elems);
3687 kfree(bss_ies);
3688 return ret;
3689}
3690
3691static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3692 struct ieee80211_mgmt *mgmt,
3693 size_t len)
3694{
3695 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3696 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3697 u16 capab_info, status_code, aid;
3698 struct ieee802_11_elems *elems;
3699 int ac, uapsd_queues = -1;
3700 u8 *pos;
3701 bool reassoc;
3702 struct cfg80211_bss *cbss;
3703 struct ieee80211_event event = {
3704 .type = MLME_EVENT,
3705 .u.mlme.data = ASSOC_EVENT,
3706 };
3707 struct ieee80211_prep_tx_info info = {};
3708
3709 sdata_assert_lock(sdata);
3710
3711 if (!assoc_data)
3712 return;
3713
3714 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
3715 return;
3716
3717 cbss = assoc_data->bss;
3718
3719
3720
3721
3722
3723
3724 if (len < 24 + 6)
3725 return;
3726
3727 reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
3728 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3729 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3730 pos = mgmt->u.assoc_resp.variable;
3731 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3732 if (cbss->channel->band == NL80211_BAND_S1GHZ) {
3733 pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
3734 aid = 0;
3735 }
3736
3737
3738
3739
3740
3741
3742
3743 info.subtype = reassoc ? IEEE80211_STYPE_REASSOC_REQ :
3744 IEEE80211_STYPE_ASSOC_REQ;
3745
3746 sdata_info(sdata,
3747 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3748 reassoc ? "Rea" : "A", mgmt->sa,
3749 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
3750
3751 if (assoc_data->fils_kek_len &&
3752 fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
3753 return;
3754
3755 elems = ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false,
3756 mgmt->bssid, assoc_data->bss->bssid);
3757 if (!elems)
3758 goto notify_driver;
3759
3760 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
3761 elems->timeout_int &&
3762 elems->timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
3763 u32 tu, ms;
3764
3765 cfg80211_assoc_comeback(sdata->dev, assoc_data->bss,
3766 le32_to_cpu(elems->timeout_int->value));
3767
3768 tu = le32_to_cpu(elems->timeout_int->value);
3769 ms = tu * 1024 / 1000;
3770 sdata_info(sdata,
3771 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3772 mgmt->sa, tu, ms);
3773 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
3774 assoc_data->timeout_started = true;
3775 if (ms > IEEE80211_ASSOC_TIMEOUT)
3776 run_again(sdata, assoc_data->timeout);
3777 goto notify_driver;
3778 }
3779
3780 if (status_code != WLAN_STATUS_SUCCESS) {
3781 sdata_info(sdata, "%pM denied association (code=%d)\n",
3782 mgmt->sa, status_code);
3783 ieee80211_destroy_assoc_data(sdata, false, false);
3784 event.u.mlme.status = MLME_DENIED;
3785 event.u.mlme.reason = status_code;
3786 drv_event_callback(sdata->local, sdata, &event);
3787 } else {
3788 if (!ieee80211_assoc_success(sdata, cbss, mgmt, len, elems)) {
3789
3790 ieee80211_destroy_assoc_data(sdata, false, false);
3791 cfg80211_assoc_timeout(sdata->dev, cbss);
3792 goto notify_driver;
3793 }
3794 event.u.mlme.status = MLME_SUCCESS;
3795 drv_event_callback(sdata->local, sdata, &event);
3796 sdata_info(sdata, "associated\n");
3797
3798
3799
3800
3801
3802
3803 ieee80211_destroy_assoc_data(sdata, true, false);
3804
3805
3806 uapsd_queues = 0;
3807 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3808 if (sdata->tx_conf[ac].uapsd)
3809 uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
3810
3811 info.success = 1;
3812 }
3813
3814 cfg80211_rx_assoc_resp(sdata->dev, cbss, (u8 *)mgmt, len, uapsd_queues,
3815 ifmgd->assoc_req_ies, ifmgd->assoc_req_ies_len);
3816notify_driver:
3817 drv_mgd_complete_tx(sdata->local, sdata, &info);
3818 kfree(elems);
3819}
3820
3821static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
3822 struct ieee80211_mgmt *mgmt, size_t len,
3823 struct ieee80211_rx_status *rx_status)
3824{
3825 struct ieee80211_local *local = sdata->local;
3826 struct ieee80211_bss *bss;
3827 struct ieee80211_channel *channel;
3828
3829 sdata_assert_lock(sdata);
3830
3831 channel = ieee80211_get_channel_khz(local->hw.wiphy,
3832 ieee80211_rx_status_to_khz(rx_status));
3833 if (!channel)
3834 return;
3835
3836 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, channel);
3837 if (bss) {
3838 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
3839 ieee80211_rx_bss_put(local, bss);
3840 }
3841}
3842
3843
3844static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
3845 struct sk_buff *skb)
3846{
3847 struct ieee80211_mgmt *mgmt = (void *)skb->data;
3848 struct ieee80211_if_managed *ifmgd;
3849 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
3850 struct ieee80211_channel *channel;
3851 size_t baselen, len = skb->len;
3852
3853 ifmgd = &sdata->u.mgd;
3854
3855 sdata_assert_lock(sdata);
3856
3857
3858
3859
3860
3861
3862
3863
3864 channel = ieee80211_get_channel(sdata->local->hw.wiphy,
3865 rx_status->freq);
3866 if (!channel)
3867 return;
3868
3869 if (!ether_addr_equal(mgmt->da, sdata->vif.addr) &&
3870 (channel->band != NL80211_BAND_6GHZ ||
3871 !is_broadcast_ether_addr(mgmt->da)))
3872 return;
3873
3874 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3875 if (baselen > len)
3876 return;
3877
3878 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
3879
3880 if (ifmgd->associated &&
3881 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3882 ieee80211_reset_ap_probe(sdata);
3883}
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900static const u64 care_about_ies =
3901 (1ULL << WLAN_EID_COUNTRY) |
3902 (1ULL << WLAN_EID_ERP_INFO) |
3903 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3904 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3905 (1ULL << WLAN_EID_HT_CAPABILITY) |
3906 (1ULL << WLAN_EID_HT_OPERATION) |
3907 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
3908
3909static void ieee80211_handle_beacon_sig(struct ieee80211_sub_if_data *sdata,
3910 struct ieee80211_if_managed *ifmgd,
3911 struct ieee80211_bss_conf *bss_conf,
3912 struct ieee80211_local *local,
3913 struct ieee80211_rx_status *rx_status)
3914{
3915
3916
3917 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3918 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3919 ewma_beacon_signal_init(&ifmgd->ave_beacon_signal);
3920 ifmgd->last_cqm_event_signal = 0;
3921 ifmgd->count_beacon_signal = 1;
3922 ifmgd->last_ave_beacon_signal = 0;
3923 } else {
3924 ifmgd->count_beacon_signal++;
3925 }
3926
3927 ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal);
3928
3929 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3930 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3931 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3932 int last_sig = ifmgd->last_ave_beacon_signal;
3933 struct ieee80211_event event = {
3934 .type = RSSI_EVENT,
3935 };
3936
3937
3938
3939
3940
3941 if (sig > ifmgd->rssi_max_thold &&
3942 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3943 ifmgd->last_ave_beacon_signal = sig;
3944 event.u.rssi.data = RSSI_EVENT_HIGH;
3945 drv_event_callback(local, sdata, &event);
3946 } else if (sig < ifmgd->rssi_min_thold &&
3947 (last_sig >= ifmgd->rssi_max_thold ||
3948 last_sig == 0)) {
3949 ifmgd->last_ave_beacon_signal = sig;
3950 event.u.rssi.data = RSSI_EVENT_LOW;
3951 drv_event_callback(local, sdata, &event);
3952 }
3953 }
3954
3955 if (bss_conf->cqm_rssi_thold &&
3956 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
3957 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
3958 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3959 int last_event = ifmgd->last_cqm_event_signal;
3960 int thold = bss_conf->cqm_rssi_thold;
3961 int hyst = bss_conf->cqm_rssi_hyst;
3962
3963 if (sig < thold &&
3964 (last_event == 0 || sig < last_event - hyst)) {
3965 ifmgd->last_cqm_event_signal = sig;
3966 ieee80211_cqm_rssi_notify(
3967 &sdata->vif,
3968 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3969 sig, GFP_KERNEL);
3970 } else if (sig > thold &&
3971 (last_event == 0 || sig > last_event + hyst)) {
3972 ifmgd->last_cqm_event_signal = sig;
3973 ieee80211_cqm_rssi_notify(
3974 &sdata->vif,
3975 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3976 sig, GFP_KERNEL);
3977 }
3978 }
3979
3980 if (bss_conf->cqm_rssi_low &&
3981 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3982 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3983 int last_event = ifmgd->last_cqm_event_signal;
3984 int low = bss_conf->cqm_rssi_low;
3985 int high = bss_conf->cqm_rssi_high;
3986
3987 if (sig < low &&
3988 (last_event == 0 || last_event >= low)) {
3989 ifmgd->last_cqm_event_signal = sig;
3990 ieee80211_cqm_rssi_notify(
3991 &sdata->vif,
3992 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3993 sig, GFP_KERNEL);
3994 } else if (sig > high &&
3995 (last_event == 0 || last_event <= high)) {
3996 ifmgd->last_cqm_event_signal = sig;
3997 ieee80211_cqm_rssi_notify(
3998 &sdata->vif,
3999 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
4000 sig, GFP_KERNEL);
4001 }
4002 }
4003}
4004
4005static bool ieee80211_rx_our_beacon(const u8 *tx_bssid,
4006 struct cfg80211_bss *bss)
4007{
4008 if (ether_addr_equal(tx_bssid, bss->bssid))
4009 return true;
4010 if (!bss->transmitted_bss)
4011 return false;
4012 return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid);
4013}
4014
4015static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
4016 struct ieee80211_hdr *hdr, size_t len,
4017 struct ieee80211_rx_status *rx_status)
4018{
4019 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4020 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
4021 struct ieee80211_mgmt *mgmt = (void *) hdr;
4022 size_t baselen;
4023 struct ieee802_11_elems *elems;
4024 struct ieee80211_local *local = sdata->local;
4025 struct ieee80211_chanctx_conf *chanctx_conf;
4026 struct ieee80211_channel *chan;
4027 struct sta_info *sta;
4028 u32 changed = 0;
4029 bool erp_valid;
4030 u8 erp_value = 0;
4031 u32 ncrc = 0;
4032 u8 *bssid, *variable = mgmt->u.beacon.variable;
4033 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
4034
4035 sdata_assert_lock(sdata);
4036
4037
4038 bssid = ieee80211_get_bssid(hdr, len, sdata->vif.type);
4039 if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
4040 struct ieee80211_ext *ext = (void *) mgmt;
4041
4042 if (ieee80211_is_s1g_short_beacon(ext->frame_control))
4043 variable = ext->u.s1g_short_beacon.variable;
4044 else
4045 variable = ext->u.s1g_beacon.variable;
4046 }
4047
4048 baselen = (u8 *) variable - (u8 *) mgmt;
4049 if (baselen > len)
4050 return;
4051
4052 rcu_read_lock();
4053 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
4054 if (!chanctx_conf) {
4055 rcu_read_unlock();
4056 return;
4057 }
4058
4059 if (ieee80211_rx_status_to_khz(rx_status) !=
4060 ieee80211_channel_to_khz(chanctx_conf->def.chan)) {
4061 rcu_read_unlock();
4062 return;
4063 }
4064 chan = chanctx_conf->def.chan;
4065 rcu_read_unlock();
4066
4067 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
4068 ieee80211_rx_our_beacon(bssid, ifmgd->assoc_data->bss)) {
4069 elems = ieee802_11_parse_elems(variable, len - baselen, false,
4070 bssid,
4071 ifmgd->assoc_data->bss->bssid);
4072 if (!elems)
4073 return;
4074
4075 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
4076
4077 if (elems->dtim_period)
4078 ifmgd->dtim_period = elems->dtim_period;
4079 ifmgd->have_beacon = true;
4080 ifmgd->assoc_data->need_beacon = false;
4081 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
4082 sdata->vif.bss_conf.sync_tsf =
4083 le64_to_cpu(mgmt->u.beacon.timestamp);
4084 sdata->vif.bss_conf.sync_device_ts =
4085 rx_status->device_timestamp;
4086 sdata->vif.bss_conf.sync_dtim_count = elems->dtim_count;
4087 }
4088
4089 if (elems->mbssid_config_ie)
4090 bss_conf->profile_periodicity =
4091 elems->mbssid_config_ie->profile_periodicity;
4092 else
4093 bss_conf->profile_periodicity = 0;
4094
4095 if (elems->ext_capab_len >= 11 &&
4096 (elems->ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
4097 bss_conf->ema_ap = true;
4098 else
4099 bss_conf->ema_ap = false;
4100
4101
4102 ifmgd->assoc_data->timeout = jiffies;
4103 ifmgd->assoc_data->timeout_started = true;
4104 run_again(sdata, ifmgd->assoc_data->timeout);
4105 kfree(elems);
4106 return;
4107 }
4108
4109 if (!ifmgd->associated ||
4110 !ieee80211_rx_our_beacon(bssid, ifmgd->associated))
4111 return;
4112 bssid = ifmgd->associated->bssid;
4113
4114 if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
4115 ieee80211_handle_beacon_sig(sdata, ifmgd, bss_conf,
4116 local, rx_status);
4117
4118 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
4119 mlme_dbg_ratelimited(sdata,
4120 "cancelling AP probe due to a received beacon\n");
4121 ieee80211_reset_ap_probe(sdata);
4122 }
4123
4124
4125
4126
4127
4128 ieee80211_sta_reset_beacon_monitor(sdata);
4129
4130
4131
4132
4133
4134
4135 if (!ieee80211_is_s1g_beacon(hdr->frame_control))
4136 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
4137 elems = ieee802_11_parse_elems_crc(variable, len - baselen,
4138 false, care_about_ies, ncrc,
4139 mgmt->bssid, bssid);
4140 if (!elems)
4141 return;
4142 ncrc = elems->crc;
4143
4144 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
4145 ieee80211_check_tim(elems->tim, elems->tim_len, bss_conf->aid)) {
4146 if (local->hw.conf.dynamic_ps_timeout > 0) {
4147 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
4148 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
4149 ieee80211_hw_config(local,
4150 IEEE80211_CONF_CHANGE_PS);
4151 }
4152 ieee80211_send_nullfunc(local, sdata, false);
4153 } else if (!local->pspolling && sdata->u.mgd.powersave) {
4154 local->pspolling = true;
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164 ieee80211_send_pspoll(local, sdata);
4165 }
4166 }
4167
4168 if (sdata->vif.p2p ||
4169 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
4170 struct ieee80211_p2p_noa_attr noa = {};
4171 int ret;
4172
4173 ret = cfg80211_get_p2p_attr(variable,
4174 len - baselen,
4175 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
4176 (u8 *) &noa, sizeof(noa));
4177 if (ret >= 2) {
4178 if (sdata->u.mgd.p2p_noa_index != noa.index) {
4179
4180 sdata->u.mgd.p2p_noa_index = noa.index;
4181 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
4182 changed |= BSS_CHANGED_P2P_PS;
4183
4184
4185
4186
4187 ifmgd->beacon_crc_valid = false;
4188 }
4189 } else if (sdata->u.mgd.p2p_noa_index != -1) {
4190
4191 sdata->u.mgd.p2p_noa_index = -1;
4192 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
4193 changed |= BSS_CHANGED_P2P_PS;
4194 ifmgd->beacon_crc_valid = false;
4195 }
4196 }
4197
4198 if (ifmgd->csa_waiting_bcn)
4199 ieee80211_chswitch_post_beacon(sdata);
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY) &&
4210 !ieee80211_is_s1g_beacon(hdr->frame_control)) {
4211 sdata->vif.bss_conf.sync_tsf =
4212 le64_to_cpu(mgmt->u.beacon.timestamp);
4213 sdata->vif.bss_conf.sync_device_ts =
4214 rx_status->device_timestamp;
4215 sdata->vif.bss_conf.sync_dtim_count = elems->dtim_count;
4216 }
4217
4218 if ((ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) ||
4219 ieee80211_is_s1g_short_beacon(mgmt->frame_control))
4220 goto free;
4221 ifmgd->beacon_crc = ncrc;
4222 ifmgd->beacon_crc_valid = true;
4223
4224 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
4225
4226 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
4227 rx_status->device_timestamp,
4228 elems, true);
4229
4230 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
4231 ieee80211_sta_wmm_params(local, sdata, elems->wmm_param,
4232 elems->wmm_param_len,
4233 elems->mu_edca_param_set))
4234 changed |= BSS_CHANGED_QOS;
4235
4236
4237
4238
4239
4240 if (!ifmgd->have_beacon) {
4241
4242 bss_conf->dtim_period = elems->dtim_period ?: 1;
4243
4244 changed |= BSS_CHANGED_BEACON_INFO;
4245 ifmgd->have_beacon = true;
4246
4247 mutex_lock(&local->iflist_mtx);
4248 ieee80211_recalc_ps(local);
4249 mutex_unlock(&local->iflist_mtx);
4250
4251 ieee80211_recalc_ps_vif(sdata);
4252 }
4253
4254 if (elems->erp_info) {
4255 erp_valid = true;
4256 erp_value = elems->erp_info[0];
4257 } else {
4258 erp_valid = false;
4259 }
4260
4261 if (!ieee80211_is_s1g_beacon(hdr->frame_control))
4262 changed |= ieee80211_handle_bss_capability(sdata,
4263 le16_to_cpu(mgmt->u.beacon.capab_info),
4264 erp_valid, erp_value);
4265
4266 mutex_lock(&local->sta_mtx);
4267 sta = sta_info_get(sdata, bssid);
4268
4269 changed |= ieee80211_recalc_twt_req(sdata, sta, elems);
4270
4271 if (ieee80211_config_bw(sdata, sta, elems->ht_cap_elem,
4272 elems->vht_cap_elem, elems->ht_operation,
4273 elems->vht_operation, elems->he_operation,
4274 elems->s1g_oper, bssid, &changed)) {
4275 mutex_unlock(&local->sta_mtx);
4276 sdata_info(sdata,
4277 "failed to follow AP %pM bandwidth change, disconnect\n",
4278 bssid);
4279 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4280 WLAN_REASON_DEAUTH_LEAVING,
4281 true, deauth_buf);
4282 ieee80211_report_disconnect(sdata, deauth_buf,
4283 sizeof(deauth_buf), true,
4284 WLAN_REASON_DEAUTH_LEAVING,
4285 false);
4286 goto free;
4287 }
4288
4289 if (sta && elems->opmode_notif)
4290 ieee80211_vht_handle_opmode(sdata, sta, *elems->opmode_notif,
4291 rx_status->band);
4292 mutex_unlock(&local->sta_mtx);
4293
4294 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
4295 elems->country_elem,
4296 elems->country_elem_len,
4297 elems->pwr_constr_elem,
4298 elems->cisco_dtpc_elem);
4299
4300 ieee80211_bss_info_change_notify(sdata, changed);
4301free:
4302 kfree(elems);
4303}
4304
4305void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
4306 struct sk_buff *skb)
4307{
4308 struct ieee80211_rx_status *rx_status;
4309 struct ieee80211_hdr *hdr;
4310 u16 fc;
4311
4312 rx_status = (struct ieee80211_rx_status *) skb->cb;
4313 hdr = (struct ieee80211_hdr *) skb->data;
4314 fc = le16_to_cpu(hdr->frame_control);
4315
4316 sdata_lock(sdata);
4317 switch (fc & IEEE80211_FCTL_STYPE) {
4318 case IEEE80211_STYPE_S1G_BEACON:
4319 ieee80211_rx_mgmt_beacon(sdata, hdr, skb->len, rx_status);
4320 break;
4321 }
4322 sdata_unlock(sdata);
4323}
4324
4325void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
4326 struct sk_buff *skb)
4327{
4328 struct ieee80211_rx_status *rx_status;
4329 struct ieee80211_mgmt *mgmt;
4330 u16 fc;
4331 int ies_len;
4332
4333 rx_status = (struct ieee80211_rx_status *) skb->cb;
4334 mgmt = (struct ieee80211_mgmt *) skb->data;
4335 fc = le16_to_cpu(mgmt->frame_control);
4336
4337 sdata_lock(sdata);
4338
4339 switch (fc & IEEE80211_FCTL_STYPE) {
4340 case IEEE80211_STYPE_BEACON:
4341 ieee80211_rx_mgmt_beacon(sdata, (void *)mgmt,
4342 skb->len, rx_status);
4343 break;
4344 case IEEE80211_STYPE_PROBE_RESP:
4345 ieee80211_rx_mgmt_probe_resp(sdata, skb);
4346 break;
4347 case IEEE80211_STYPE_AUTH:
4348 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
4349 break;
4350 case IEEE80211_STYPE_DEAUTH:
4351 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
4352 break;
4353 case IEEE80211_STYPE_DISASSOC:
4354 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
4355 break;
4356 case IEEE80211_STYPE_ASSOC_RESP:
4357 case IEEE80211_STYPE_REASSOC_RESP:
4358 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
4359 break;
4360 case IEEE80211_STYPE_ACTION:
4361 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
4362 struct ieee802_11_elems *elems;
4363
4364 ies_len = skb->len -
4365 offsetof(struct ieee80211_mgmt,
4366 u.action.u.chan_switch.variable);
4367
4368 if (ies_len < 0)
4369 break;
4370
4371
4372 elems = ieee802_11_parse_elems(
4373 mgmt->u.action.u.chan_switch.variable,
4374 ies_len, true, mgmt->bssid, NULL);
4375
4376 if (elems && !elems->parse_error)
4377 ieee80211_sta_process_chanswitch(sdata,
4378 rx_status->mactime,
4379 rx_status->device_timestamp,
4380 elems, false);
4381 kfree(elems);
4382 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
4383 struct ieee802_11_elems *elems;
4384
4385 ies_len = skb->len -
4386 offsetof(struct ieee80211_mgmt,
4387 u.action.u.ext_chan_switch.variable);
4388
4389 if (ies_len < 0)
4390 break;
4391
4392
4393
4394
4395
4396 elems = ieee802_11_parse_elems(
4397 mgmt->u.action.u.ext_chan_switch.variable,
4398 ies_len, true, mgmt->bssid, NULL);
4399
4400 if (elems && !elems->parse_error) {
4401
4402 elems->ext_chansw_ie =
4403 &mgmt->u.action.u.ext_chan_switch.data;
4404
4405 ieee80211_sta_process_chanswitch(sdata,
4406 rx_status->mactime,
4407 rx_status->device_timestamp,
4408 elems, false);
4409 }
4410
4411 kfree(elems);
4412 }
4413 break;
4414 }
4415 sdata_unlock(sdata);
4416}
4417
4418static void ieee80211_sta_timer(struct timer_list *t)
4419{
4420 struct ieee80211_sub_if_data *sdata =
4421 from_timer(sdata, t, u.mgd.timer);
4422
4423 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
4424}
4425
4426void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
4427 u8 *bssid, u8 reason, bool tx)
4428{
4429 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4430
4431 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
4432 tx, frame_buf);
4433
4434 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
4435 reason, false);
4436}
4437
4438static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
4439{
4440 struct ieee80211_local *local = sdata->local;
4441 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4442 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
4443 u32 tx_flags = 0;
4444 u16 trans = 1;
4445 u16 status = 0;
4446 struct ieee80211_prep_tx_info info = {
4447 .subtype = IEEE80211_STYPE_AUTH,
4448 };
4449
4450 sdata_assert_lock(sdata);
4451
4452 if (WARN_ON_ONCE(!auth_data))
4453 return -EINVAL;
4454
4455 auth_data->tries++;
4456
4457 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
4458 sdata_info(sdata, "authentication with %pM timed out\n",
4459 auth_data->bss->bssid);
4460
4461
4462
4463
4464
4465 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
4466
4467 return -ETIMEDOUT;
4468 }
4469
4470 if (auth_data->algorithm == WLAN_AUTH_SAE)
4471 info.duration = jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE);
4472
4473 drv_mgd_prepare_tx(local, sdata, &info);
4474
4475 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
4476 auth_data->bss->bssid, auth_data->tries,
4477 IEEE80211_AUTH_MAX_TRIES);
4478
4479 auth_data->expected_transaction = 2;
4480
4481 if (auth_data->algorithm == WLAN_AUTH_SAE) {
4482 trans = auth_data->sae_trans;
4483 status = auth_data->sae_status;
4484 auth_data->expected_transaction = trans;
4485 }
4486
4487 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4488 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
4489 IEEE80211_TX_INTFL_MLME_CONN_TX;
4490
4491 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
4492 auth_data->data, auth_data->data_len,
4493 auth_data->bss->bssid,
4494 auth_data->bss->bssid, NULL, 0, 0,
4495 tx_flags);
4496
4497 if (tx_flags == 0) {
4498 if (auth_data->algorithm == WLAN_AUTH_SAE)
4499 auth_data->timeout = jiffies +
4500 IEEE80211_AUTH_TIMEOUT_SAE;
4501 else
4502 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
4503 } else {
4504 auth_data->timeout =
4505 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
4506 }
4507
4508 auth_data->timeout_started = true;
4509 run_again(sdata, auth_data->timeout);
4510
4511 return 0;
4512}
4513
4514static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
4515{
4516 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
4517 struct ieee80211_local *local = sdata->local;
4518 int ret;
4519
4520 sdata_assert_lock(sdata);
4521
4522 assoc_data->tries++;
4523 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
4524 sdata_info(sdata, "association with %pM timed out\n",
4525 assoc_data->bss->bssid);
4526
4527
4528
4529
4530
4531 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
4532
4533 return -ETIMEDOUT;
4534 }
4535
4536 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
4537 assoc_data->bss->bssid, assoc_data->tries,
4538 IEEE80211_ASSOC_MAX_TRIES);
4539 ret = ieee80211_send_assoc(sdata);
4540 if (ret)
4541 return ret;
4542
4543 if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
4544 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
4545 assoc_data->timeout_started = true;
4546 run_again(sdata, assoc_data->timeout);
4547 } else {
4548 assoc_data->timeout =
4549 round_jiffies_up(jiffies +
4550 IEEE80211_ASSOC_TIMEOUT_LONG);
4551 assoc_data->timeout_started = true;
4552 run_again(sdata, assoc_data->timeout);
4553 }
4554
4555 return 0;
4556}
4557
4558void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
4559 __le16 fc, bool acked)
4560{
4561 struct ieee80211_local *local = sdata->local;
4562
4563 sdata->u.mgd.status_fc = fc;
4564 sdata->u.mgd.status_acked = acked;
4565 sdata->u.mgd.status_received = true;
4566
4567 ieee80211_queue_work(&local->hw, &sdata->work);
4568}
4569
4570void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
4571{
4572 struct ieee80211_local *local = sdata->local;
4573 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4574
4575 sdata_lock(sdata);
4576
4577 if (ifmgd->status_received) {
4578 __le16 fc = ifmgd->status_fc;
4579 bool status_acked = ifmgd->status_acked;
4580
4581 ifmgd->status_received = false;
4582 if (ifmgd->auth_data && ieee80211_is_auth(fc)) {
4583 if (status_acked) {
4584 if (ifmgd->auth_data->algorithm ==
4585 WLAN_AUTH_SAE)
4586 ifmgd->auth_data->timeout =
4587 jiffies +
4588 IEEE80211_AUTH_TIMEOUT_SAE;
4589 else
4590 ifmgd->auth_data->timeout =
4591 jiffies +
4592 IEEE80211_AUTH_TIMEOUT_SHORT;
4593 run_again(sdata, ifmgd->auth_data->timeout);
4594 } else {
4595 ifmgd->auth_data->timeout = jiffies - 1;
4596 }
4597 ifmgd->auth_data->timeout_started = true;
4598 } else if (ifmgd->assoc_data &&
4599 (ieee80211_is_assoc_req(fc) ||
4600 ieee80211_is_reassoc_req(fc))) {
4601 if (status_acked) {
4602 ifmgd->assoc_data->timeout =
4603 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
4604 run_again(sdata, ifmgd->assoc_data->timeout);
4605 } else {
4606 ifmgd->assoc_data->timeout = jiffies - 1;
4607 }
4608 ifmgd->assoc_data->timeout_started = true;
4609 }
4610 }
4611
4612 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
4613 time_after(jiffies, ifmgd->auth_data->timeout)) {
4614 if (ifmgd->auth_data->done || ifmgd->auth_data->waiting) {
4615
4616
4617
4618
4619 ieee80211_destroy_auth_data(sdata, false);
4620 } else if (ieee80211_auth(sdata)) {
4621 u8 bssid[ETH_ALEN];
4622 struct ieee80211_event event = {
4623 .type = MLME_EVENT,
4624 .u.mlme.data = AUTH_EVENT,
4625 .u.mlme.status = MLME_TIMEOUT,
4626 };
4627
4628 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
4629
4630 ieee80211_destroy_auth_data(sdata, false);
4631
4632 cfg80211_auth_timeout(sdata->dev, bssid);
4633 drv_event_callback(sdata->local, sdata, &event);
4634 }
4635 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
4636 run_again(sdata, ifmgd->auth_data->timeout);
4637
4638 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
4639 time_after(jiffies, ifmgd->assoc_data->timeout)) {
4640 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
4641 ieee80211_do_assoc(sdata)) {
4642 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
4643 struct ieee80211_event event = {
4644 .type = MLME_EVENT,
4645 .u.mlme.data = ASSOC_EVENT,
4646 .u.mlme.status = MLME_TIMEOUT,
4647 };
4648
4649 ieee80211_destroy_assoc_data(sdata, false, false);
4650 cfg80211_assoc_timeout(sdata->dev, bss);
4651 drv_event_callback(sdata->local, sdata, &event);
4652 }
4653 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
4654 run_again(sdata, ifmgd->assoc_data->timeout);
4655
4656 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
4657 ifmgd->associated) {
4658 u8 bssid[ETH_ALEN];
4659 int max_tries;
4660
4661 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4662
4663 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4664 max_tries = max_nullfunc_tries;
4665 else
4666 max_tries = max_probe_tries;
4667
4668
4669 if (!ifmgd->probe_send_count)
4670 ieee80211_reset_ap_probe(sdata);
4671 else if (ifmgd->nullfunc_failed) {
4672 if (ifmgd->probe_send_count < max_tries) {
4673 mlme_dbg(sdata,
4674 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
4675 bssid, ifmgd->probe_send_count,
4676 max_tries);
4677 ieee80211_mgd_probe_ap_send(sdata);
4678 } else {
4679 mlme_dbg(sdata,
4680 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
4681 bssid);
4682 ieee80211_sta_connection_lost(sdata, bssid,
4683 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
4684 false);
4685 }
4686 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
4687 run_again(sdata, ifmgd->probe_timeout);
4688 else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
4689 mlme_dbg(sdata,
4690 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
4691 bssid, probe_wait_ms);
4692 ieee80211_sta_connection_lost(sdata, bssid,
4693 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4694 } else if (ifmgd->probe_send_count < max_tries) {
4695 mlme_dbg(sdata,
4696 "No probe response from AP %pM after %dms, try %d/%i\n",
4697 bssid, probe_wait_ms,
4698 ifmgd->probe_send_count, max_tries);
4699 ieee80211_mgd_probe_ap_send(sdata);
4700 } else {
4701
4702
4703
4704
4705 mlme_dbg(sdata,
4706 "No probe response from AP %pM after %dms, disconnecting.\n",
4707 bssid, probe_wait_ms);
4708
4709 ieee80211_sta_connection_lost(sdata, bssid,
4710 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4711 }
4712 }
4713
4714 sdata_unlock(sdata);
4715}
4716
4717static void ieee80211_sta_bcn_mon_timer(struct timer_list *t)
4718{
4719 struct ieee80211_sub_if_data *sdata =
4720 from_timer(sdata, t, u.mgd.bcn_mon_timer);
4721 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4722
4723 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4724 return;
4725
4726 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
4727 return;
4728
4729 sdata->u.mgd.connection_loss = false;
4730 ieee80211_queue_work(&sdata->local->hw,
4731 &sdata->u.mgd.beacon_connection_loss_work);
4732}
4733
4734static void ieee80211_sta_conn_mon_timer(struct timer_list *t)
4735{
4736 struct ieee80211_sub_if_data *sdata =
4737 from_timer(sdata, t, u.mgd.conn_mon_timer);
4738 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4739 struct ieee80211_local *local = sdata->local;
4740 struct sta_info *sta;
4741 unsigned long timeout;
4742
4743 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4744 return;
4745
4746 sta = sta_info_get(sdata, ifmgd->bssid);
4747 if (!sta)
4748 return;
4749
4750 timeout = sta->status_stats.last_ack;
4751 if (time_before(sta->status_stats.last_ack, sta->rx_stats.last_rx))
4752 timeout = sta->rx_stats.last_rx;
4753 timeout += IEEE80211_CONNECTION_IDLE_TIME;
4754
4755
4756
4757
4758 if (time_is_after_jiffies(timeout)) {
4759 mod_timer(&ifmgd->conn_mon_timer, round_jiffies_up(timeout));
4760 return;
4761 }
4762
4763 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
4764}
4765
4766static void ieee80211_sta_monitor_work(struct work_struct *work)
4767{
4768 struct ieee80211_sub_if_data *sdata =
4769 container_of(work, struct ieee80211_sub_if_data,
4770 u.mgd.monitor_work);
4771
4772 ieee80211_mgd_probe_ap(sdata, false);
4773}
4774
4775static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
4776{
4777 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
4778 __ieee80211_stop_poll(sdata);
4779
4780
4781 if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
4782 ieee80211_queue_work(&sdata->local->hw,
4783 &sdata->u.mgd.monitor_work);
4784 }
4785}
4786
4787#ifdef CONFIG_PM
4788void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
4789{
4790 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4791 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4792
4793 sdata_lock(sdata);
4794
4795 if (ifmgd->auth_data || ifmgd->assoc_data) {
4796 const u8 *bssid = ifmgd->auth_data ?
4797 ifmgd->auth_data->bss->bssid :
4798 ifmgd->assoc_data->bss->bssid;
4799
4800
4801
4802
4803
4804
4805 ieee80211_send_deauth_disassoc(sdata, bssid, bssid,
4806 IEEE80211_STYPE_DEAUTH,
4807 WLAN_REASON_DEAUTH_LEAVING,
4808 false, frame_buf);
4809 if (ifmgd->assoc_data)
4810 ieee80211_destroy_assoc_data(sdata, false, true);
4811 if (ifmgd->auth_data)
4812 ieee80211_destroy_auth_data(sdata, false);
4813 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4814 IEEE80211_DEAUTH_FRAME_LEN,
4815 false);
4816 }
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835 if (ifmgd->associated && !sdata->local->wowlan) {
4836 u8 bssid[ETH_ALEN];
4837 struct cfg80211_deauth_request req = {
4838 .reason_code = WLAN_REASON_DEAUTH_LEAVING,
4839 .bssid = bssid,
4840 };
4841
4842 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4843 ieee80211_mgd_deauth(sdata, &req);
4844 }
4845
4846 sdata_unlock(sdata);
4847}
4848
4849void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
4850{
4851 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4852
4853 sdata_lock(sdata);
4854 if (!ifmgd->associated) {
4855 sdata_unlock(sdata);
4856 return;
4857 }
4858
4859 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
4860 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
4861 mlme_dbg(sdata, "driver requested disconnect after resume\n");
4862 ieee80211_sta_connection_lost(sdata,
4863 ifmgd->associated->bssid,
4864 WLAN_REASON_UNSPECIFIED,
4865 true);
4866 sdata_unlock(sdata);
4867 return;
4868 }
4869 sdata_unlock(sdata);
4870}
4871#endif
4872
4873
4874void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
4875{
4876 struct ieee80211_if_managed *ifmgd;
4877
4878 ifmgd = &sdata->u.mgd;
4879 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
4880 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
4881 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4882 ieee80211_beacon_connection_loss_work);
4883 INIT_WORK(&ifmgd->csa_connection_drop_work,
4884 ieee80211_csa_connection_drop_work);
4885 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
4886 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4887 ieee80211_tdls_peer_del_work);
4888 timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0);
4889 timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0);
4890 timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0);
4891 timer_setup(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 0);
4892 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4893 ieee80211_sta_handle_tspec_ac_params_wk);
4894
4895 ifmgd->flags = 0;
4896 ifmgd->powersave = sdata->wdev.ps;
4897 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4898 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
4899 ifmgd->p2p_noa_index = -1;
4900
4901 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
4902 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4903 else
4904 ifmgd->req_smps = IEEE80211_SMPS_OFF;
4905
4906
4907 spin_lock_init(&ifmgd->teardown_lock);
4908 ifmgd->teardown_skb = NULL;
4909 ifmgd->orig_teardown_skb = NULL;
4910}
4911
4912
4913void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
4914{
4915 struct ieee80211_sub_if_data *sdata;
4916
4917
4918 rcu_read_lock();
4919 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4920 if (ieee80211_sdata_running(sdata))
4921 ieee80211_restart_sta_timer(sdata);
4922 }
4923 rcu_read_unlock();
4924}
4925
4926static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4927 struct cfg80211_bss *cbss)
4928{
4929 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4930 const struct element *ht_cap_elem, *vht_cap_elem;
4931 const struct ieee80211_ht_cap *ht_cap;
4932 const struct ieee80211_vht_cap *vht_cap;
4933 u8 chains = 1;
4934
4935 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4936 return chains;
4937
4938 ht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_HT_CAPABILITY);
4939 if (ht_cap_elem && ht_cap_elem->datalen >= sizeof(*ht_cap)) {
4940 ht_cap = (void *)ht_cap_elem->data;
4941 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4942
4943
4944
4945
4946 }
4947
4948 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4949 return chains;
4950
4951 vht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_VHT_CAPABILITY);
4952 if (vht_cap_elem && vht_cap_elem->datalen >= sizeof(*vht_cap)) {
4953 u8 nss;
4954 u16 tx_mcs_map;
4955
4956 vht_cap = (void *)vht_cap_elem->data;
4957 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4958 for (nss = 8; nss > 0; nss--) {
4959 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4960 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4961 break;
4962 }
4963
4964 chains = max(chains, nss);
4965 }
4966
4967 return chains;
4968}
4969
4970static bool
4971ieee80211_verify_sta_he_mcs_support(struct ieee80211_sub_if_data *sdata,
4972 struct ieee80211_supported_band *sband,
4973 const struct ieee80211_he_operation *he_op)
4974{
4975 const struct ieee80211_sta_he_cap *sta_he_cap =
4976 ieee80211_get_he_iftype_cap(sband,
4977 ieee80211_vif_type_p2p(&sdata->vif));
4978 u16 ap_min_req_set;
4979 int i;
4980
4981 if (!sta_he_cap || !he_op)
4982 return false;
4983
4984 ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
4985
4986
4987 for (i = 0; i < 3; i++) {
4988 const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp =
4989 &sta_he_cap->he_mcs_nss_supp;
4990 u16 sta_mcs_map_rx =
4991 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]);
4992 u16 sta_mcs_map_tx =
4993 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]);
4994 u8 nss;
4995 bool verified = true;
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006 for (nss = 8; nss > 0; nss--) {
5007 u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3;
5008 u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3;
5009 u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
5010
5011 if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
5012 continue;
5013
5014
5015
5016
5017
5018 if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
5019 sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
5020 (ap_val > sta_rx_val) || (ap_val > sta_tx_val)) {
5021 verified = false;
5022 break;
5023 }
5024 }
5025
5026 if (verified)
5027 return true;
5028 }
5029
5030
5031 return false;
5032}
5033
5034static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
5035 struct cfg80211_bss *cbss)
5036{
5037 struct ieee80211_local *local = sdata->local;
5038 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5039 const struct ieee80211_ht_cap *ht_cap = NULL;
5040 const struct ieee80211_ht_operation *ht_oper = NULL;
5041 const struct ieee80211_vht_operation *vht_oper = NULL;
5042 const struct ieee80211_he_operation *he_oper = NULL;
5043 const struct ieee80211_s1g_oper_ie *s1g_oper = NULL;
5044 struct ieee80211_supported_band *sband;
5045 struct cfg80211_chan_def chandef;
5046 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
5047 bool is_5ghz = cbss->channel->band == NL80211_BAND_5GHZ;
5048 struct ieee80211_bss *bss = (void *)cbss->priv;
5049 struct ieee802_11_elems *elems;
5050 const struct cfg80211_bss_ies *ies;
5051 int ret;
5052 u32 i;
5053 bool have_80mhz;
5054
5055 rcu_read_lock();
5056
5057 ies = rcu_dereference(cbss->ies);
5058 elems = ieee802_11_parse_elems(ies->data, ies->len, false,
5059 NULL, NULL);
5060 if (!elems) {
5061 rcu_read_unlock();
5062 return -ENOMEM;
5063 }
5064
5065 sband = local->hw.wiphy->bands[cbss->channel->band];
5066
5067 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
5068 IEEE80211_STA_DISABLE_80P80MHZ |
5069 IEEE80211_STA_DISABLE_160MHZ);
5070
5071
5072 if (!sband->ht_cap.ht_supported && !is_6ghz) {
5073 mlme_dbg(sdata, "HT not supported, disabling HT/VHT/HE\n");
5074 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5075 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5076 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5077 }
5078
5079 if (!sband->vht_cap.vht_supported && is_5ghz) {
5080 mlme_dbg(sdata, "VHT not supported, disabling VHT/HE\n");
5081 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5082 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5083 }
5084
5085 if (!ieee80211_get_he_iftype_cap(sband,
5086 ieee80211_vif_type_p2p(&sdata->vif))) {
5087 mlme_dbg(sdata, "HE not supported, disabling it\n");
5088 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5089 }
5090
5091 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && !is_6ghz) {
5092 ht_oper = elems->ht_operation;
5093 ht_cap = elems->ht_cap_elem;
5094
5095 if (!ht_cap) {
5096 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5097 ht_oper = NULL;
5098 }
5099 }
5100
5101 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && !is_6ghz) {
5102 vht_oper = elems->vht_operation;
5103 if (vht_oper && !ht_oper) {
5104 vht_oper = NULL;
5105 sdata_info(sdata,
5106 "AP advertised VHT without HT, disabling HT/VHT/HE\n");
5107 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5108 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5109 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5110 }
5111
5112 if (!elems->vht_cap_elem) {
5113 sdata_info(sdata,
5114 "bad VHT capabilities, disabling VHT\n");
5115 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5116 vht_oper = NULL;
5117 }
5118 }
5119
5120 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) {
5121 he_oper = elems->he_operation;
5122
5123 if (is_6ghz) {
5124 struct ieee80211_bss_conf *bss_conf;
5125 u8 i, j = 0;
5126
5127 bss_conf = &sdata->vif.bss_conf;
5128
5129 if (elems->pwr_constr_elem)
5130 bss_conf->pwr_reduction = *elems->pwr_constr_elem;
5131
5132 BUILD_BUG_ON(ARRAY_SIZE(bss_conf->tx_pwr_env) !=
5133 ARRAY_SIZE(elems->tx_pwr_env));
5134
5135 for (i = 0; i < elems->tx_pwr_env_num; i++) {
5136 if (elems->tx_pwr_env_len[i] >
5137 sizeof(bss_conf->tx_pwr_env[j]))
5138 continue;
5139
5140 bss_conf->tx_pwr_env_num++;
5141 memcpy(&bss_conf->tx_pwr_env[j], elems->tx_pwr_env[i],
5142 elems->tx_pwr_env_len[i]);
5143 j++;
5144 }
5145 }
5146
5147 if (!ieee80211_verify_sta_he_mcs_support(sdata, sband, he_oper))
5148 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5149 }
5150
5151
5152 have_80mhz = false;
5153 for (i = 0; i < sband->n_channels; i++) {
5154 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
5155 IEEE80211_CHAN_NO_80MHZ))
5156 continue;
5157
5158 have_80mhz = true;
5159 break;
5160 }
5161
5162 if (!have_80mhz) {
5163 sdata_info(sdata, "80 MHz not supported, disabling VHT\n");
5164 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5165 }
5166
5167 if (sband->band == NL80211_BAND_S1GHZ) {
5168 s1g_oper = elems->s1g_oper;
5169 if (!s1g_oper)
5170 sdata_info(sdata,
5171 "AP missing S1G operation element?\n");
5172 }
5173
5174 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
5175 cbss->channel,
5176 bss->vht_cap_info,
5177 ht_oper, vht_oper, he_oper,
5178 s1g_oper,
5179 &chandef, false);
5180
5181 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
5182 local->rx_chains);
5183
5184 rcu_read_unlock();
5185
5186 kfree(elems);
5187 elems = NULL;
5188
5189 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE && is_6ghz) {
5190 sdata_info(sdata, "Rejecting non-HE 6/7 GHz connection");
5191 return -EINVAL;
5192 }
5193
5194
5195 sdata->smps_mode = IEEE80211_SMPS_OFF;
5196
5197 mutex_lock(&local->mtx);
5198
5199
5200
5201
5202
5203 ret = ieee80211_vif_use_channel(sdata, &chandef,
5204 IEEE80211_CHANCTX_SHARED);
5205
5206
5207 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
5208 chandef.width == NL80211_CHAN_WIDTH_10)
5209 goto out;
5210
5211 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
5212 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
5213 ret = ieee80211_vif_use_channel(sdata, &chandef,
5214 IEEE80211_CHANCTX_SHARED);
5215 }
5216 out:
5217 mutex_unlock(&local->mtx);
5218 return ret;
5219}
5220
5221static bool ieee80211_get_dtim(const struct cfg80211_bss_ies *ies,
5222 u8 *dtim_count, u8 *dtim_period)
5223{
5224 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len);
5225 const u8 *idx_ie = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, ies->data,
5226 ies->len);
5227 const struct ieee80211_tim_ie *tim = NULL;
5228 const struct ieee80211_bssid_index *idx;
5229 bool valid = tim_ie && tim_ie[1] >= 2;
5230
5231 if (valid)
5232 tim = (void *)(tim_ie + 2);
5233
5234 if (dtim_count)
5235 *dtim_count = valid ? tim->dtim_count : 0;
5236
5237 if (dtim_period)
5238 *dtim_period = valid ? tim->dtim_period : 0;
5239
5240
5241 if (!idx_ie || idx_ie[1] < 3)
5242 return valid;
5243
5244 idx = (void *)(idx_ie + 2);
5245
5246 if (dtim_count)
5247 *dtim_count = idx->dtim_count;
5248
5249 if (dtim_period)
5250 *dtim_period = idx->dtim_period;
5251
5252 return true;
5253}
5254
5255static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
5256 struct cfg80211_bss *cbss, bool assoc,
5257 bool override)
5258{
5259 struct ieee80211_local *local = sdata->local;
5260 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5261 struct ieee80211_bss *bss = (void *)cbss->priv;
5262 struct sta_info *new_sta = NULL;
5263 struct ieee80211_supported_band *sband;
5264 bool have_sta = false;
5265 int err;
5266
5267 sband = local->hw.wiphy->bands[cbss->channel->band];
5268
5269 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
5270 return -EINVAL;
5271
5272
5273 if (local->in_reconfig)
5274 return -EBUSY;
5275
5276 if (assoc) {
5277 rcu_read_lock();
5278 have_sta = sta_info_get(sdata, cbss->bssid);
5279 rcu_read_unlock();
5280 }
5281
5282 if (!have_sta) {
5283 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
5284 if (!new_sta)
5285 return -ENOMEM;
5286 }
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301 if (new_sta) {
5302 u32 rates = 0, basic_rates = 0;
5303 bool have_higher_than_11mbit = false;
5304 int min_rate = INT_MAX, min_rate_index = -1;
5305 const struct cfg80211_bss_ies *ies;
5306 int shift = ieee80211_vif_get_shift(&sdata->vif);
5307
5308
5309 if (cbss->channel->band == NL80211_BAND_S1GHZ) {
5310 ieee80211_s1g_sta_rate_init(new_sta);
5311 goto skip_rates;
5312 }
5313
5314 ieee80211_get_rates(sband, bss->supp_rates,
5315 bss->supp_rates_len,
5316 &rates, &basic_rates,
5317 &have_higher_than_11mbit,
5318 &min_rate, &min_rate_index,
5319 shift);
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331 if (min_rate_index < 0) {
5332 sdata_info(sdata,
5333 "No legacy rates in association response\n");
5334
5335 sta_info_free(local, new_sta);
5336 return -EINVAL;
5337 } else if (!basic_rates) {
5338 sdata_info(sdata,
5339 "No basic rates, using min rate instead\n");
5340 basic_rates = BIT(min_rate_index);
5341 }
5342
5343 if (rates)
5344 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5345 else
5346 sdata_info(sdata,
5347 "No rates found, keeping mandatory only\n");
5348
5349 sdata->vif.bss_conf.basic_rates = basic_rates;
5350
5351
5352 if (cbss->channel->band == NL80211_BAND_2GHZ &&
5353 have_higher_than_11mbit)
5354 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
5355 else
5356 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
5357
5358skip_rates:
5359 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
5360
5361
5362 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
5363 rcu_read_lock();
5364 ies = rcu_dereference(cbss->beacon_ies);
5365 if (ies) {
5366 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5367 sdata->vif.bss_conf.sync_device_ts =
5368 bss->device_ts_beacon;
5369
5370 ieee80211_get_dtim(ies,
5371 &sdata->vif.bss_conf.sync_dtim_count,
5372 NULL);
5373 } else if (!ieee80211_hw_check(&sdata->local->hw,
5374 TIMING_BEACON_ONLY)) {
5375 ies = rcu_dereference(cbss->proberesp_ies);
5376
5377 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5378 sdata->vif.bss_conf.sync_device_ts =
5379 bss->device_ts_presp;
5380 sdata->vif.bss_conf.sync_dtim_count = 0;
5381 } else {
5382 sdata->vif.bss_conf.sync_tsf = 0;
5383 sdata->vif.bss_conf.sync_device_ts = 0;
5384 sdata->vif.bss_conf.sync_dtim_count = 0;
5385 }
5386 rcu_read_unlock();
5387 }
5388
5389 if (new_sta || override) {
5390 err = ieee80211_prep_channel(sdata, cbss);
5391 if (err) {
5392 if (new_sta)
5393 sta_info_free(local, new_sta);
5394 return -EINVAL;
5395 }
5396 }
5397
5398 if (new_sta) {
5399
5400
5401
5402
5403 ieee80211_bss_info_change_notify(sdata,
5404 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
5405 BSS_CHANGED_BEACON_INT);
5406
5407 if (assoc)
5408 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
5409
5410 err = sta_info_insert(new_sta);
5411 new_sta = NULL;
5412 if (err) {
5413 sdata_info(sdata,
5414 "failed to insert STA entry for the AP (error %d)\n",
5415 err);
5416 return err;
5417 }
5418 } else
5419 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
5420
5421
5422 if (local->scanning)
5423 ieee80211_scan_cancel(local);
5424
5425 return 0;
5426}
5427
5428
5429int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
5430 struct cfg80211_auth_request *req)
5431{
5432 struct ieee80211_local *local = sdata->local;
5433 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5434 struct ieee80211_mgd_auth_data *auth_data;
5435 u16 auth_alg;
5436 int err;
5437 bool cont_auth;
5438
5439
5440
5441 switch (req->auth_type) {
5442 case NL80211_AUTHTYPE_OPEN_SYSTEM:
5443 auth_alg = WLAN_AUTH_OPEN;
5444 break;
5445 case NL80211_AUTHTYPE_SHARED_KEY:
5446 if (fips_enabled)
5447 return -EOPNOTSUPP;
5448 auth_alg = WLAN_AUTH_SHARED_KEY;
5449 break;
5450 case NL80211_AUTHTYPE_FT:
5451 auth_alg = WLAN_AUTH_FT;
5452 break;
5453 case NL80211_AUTHTYPE_NETWORK_EAP:
5454 auth_alg = WLAN_AUTH_LEAP;
5455 break;
5456 case NL80211_AUTHTYPE_SAE:
5457 auth_alg = WLAN_AUTH_SAE;
5458 break;
5459 case NL80211_AUTHTYPE_FILS_SK:
5460 auth_alg = WLAN_AUTH_FILS_SK;
5461 break;
5462 case NL80211_AUTHTYPE_FILS_SK_PFS:
5463 auth_alg = WLAN_AUTH_FILS_SK_PFS;
5464 break;
5465 case NL80211_AUTHTYPE_FILS_PK:
5466 auth_alg = WLAN_AUTH_FILS_PK;
5467 break;
5468 default:
5469 return -EOPNOTSUPP;
5470 }
5471
5472 if (ifmgd->assoc_data)
5473 return -EBUSY;
5474
5475 auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len +
5476 req->ie_len, GFP_KERNEL);
5477 if (!auth_data)
5478 return -ENOMEM;
5479
5480 auth_data->bss = req->bss;
5481
5482 if (req->auth_data_len >= 4) {
5483 if (req->auth_type == NL80211_AUTHTYPE_SAE) {
5484 __le16 *pos = (__le16 *) req->auth_data;
5485
5486 auth_data->sae_trans = le16_to_cpu(pos[0]);
5487 auth_data->sae_status = le16_to_cpu(pos[1]);
5488 }
5489 memcpy(auth_data->data, req->auth_data + 4,
5490 req->auth_data_len - 4);
5491 auth_data->data_len += req->auth_data_len - 4;
5492 }
5493
5494
5495
5496
5497
5498
5499 cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss;
5500
5501 if (req->ie && req->ie_len) {
5502 memcpy(&auth_data->data[auth_data->data_len],
5503 req->ie, req->ie_len);
5504 auth_data->data_len += req->ie_len;
5505 }
5506
5507 if (req->key && req->key_len) {
5508 auth_data->key_len = req->key_len;
5509 auth_data->key_idx = req->key_idx;
5510 memcpy(auth_data->key, req->key, req->key_len);
5511 }
5512
5513 auth_data->algorithm = auth_alg;
5514
5515
5516
5517 if (ifmgd->auth_data) {
5518 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) {
5519 auth_data->peer_confirmed =
5520 ifmgd->auth_data->peer_confirmed;
5521 }
5522 ieee80211_destroy_auth_data(sdata, cont_auth);
5523 }
5524
5525
5526 ifmgd->auth_data = auth_data;
5527
5528
5529
5530
5531
5532
5533 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE &&
5534 auth_data->peer_confirmed && auth_data->sae_trans == 2)
5535 ieee80211_mark_sta_auth(sdata, req->bss->bssid);
5536
5537 if (ifmgd->associated) {
5538 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5539
5540 sdata_info(sdata,
5541 "disconnect from AP %pM for new auth to %pM\n",
5542 ifmgd->associated->bssid, req->bss->bssid);
5543 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5544 WLAN_REASON_UNSPECIFIED,
5545 false, frame_buf);
5546
5547 ieee80211_report_disconnect(sdata, frame_buf,
5548 sizeof(frame_buf), true,
5549 WLAN_REASON_UNSPECIFIED,
5550 false);
5551 }
5552
5553 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
5554
5555 err = ieee80211_prep_connection(sdata, req->bss, cont_auth, false);
5556 if (err)
5557 goto err_clear;
5558
5559 err = ieee80211_auth(sdata);
5560 if (err) {
5561 sta_info_destroy_addr(sdata, req->bss->bssid);
5562 goto err_clear;
5563 }
5564
5565
5566 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
5567 return 0;
5568
5569 err_clear:
5570 eth_zero_addr(ifmgd->bssid);
5571 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
5572 ifmgd->auth_data = NULL;
5573 mutex_lock(&sdata->local->mtx);
5574 ieee80211_vif_release_channel(sdata);
5575 mutex_unlock(&sdata->local->mtx);
5576 kfree(auth_data);
5577 return err;
5578}
5579
5580int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
5581 struct cfg80211_assoc_request *req)
5582{
5583 bool is_6ghz = req->bss->channel->band == NL80211_BAND_6GHZ;
5584 bool is_5ghz = req->bss->channel->band == NL80211_BAND_5GHZ;
5585 struct ieee80211_local *local = sdata->local;
5586 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5587 struct ieee80211_bss *bss = (void *)req->bss->priv;
5588 struct ieee80211_mgd_assoc_data *assoc_data;
5589 const struct cfg80211_bss_ies *beacon_ies;
5590 struct ieee80211_supported_band *sband;
5591 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
5592 const struct element *ssid_elem, *ht_elem, *vht_elem;
5593 int i, err;
5594 bool override = false;
5595
5596 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
5597 if (!assoc_data)
5598 return -ENOMEM;
5599
5600 rcu_read_lock();
5601 ssid_elem = ieee80211_bss_get_elem(req->bss, WLAN_EID_SSID);
5602 if (!ssid_elem || ssid_elem->datalen > sizeof(assoc_data->ssid)) {
5603 rcu_read_unlock();
5604 kfree(assoc_data);
5605 return -EINVAL;
5606 }
5607 memcpy(assoc_data->ssid, ssid_elem->data, ssid_elem->datalen);
5608 assoc_data->ssid_len = ssid_elem->datalen;
5609 memcpy(bss_conf->ssid, assoc_data->ssid, assoc_data->ssid_len);
5610 bss_conf->ssid_len = assoc_data->ssid_len;
5611 rcu_read_unlock();
5612
5613 if (ifmgd->associated) {
5614 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5615
5616 sdata_info(sdata,
5617 "disconnect from AP %pM for new assoc to %pM\n",
5618 ifmgd->associated->bssid, req->bss->bssid);
5619 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5620 WLAN_REASON_UNSPECIFIED,
5621 false, frame_buf);
5622
5623 ieee80211_report_disconnect(sdata, frame_buf,
5624 sizeof(frame_buf), true,
5625 WLAN_REASON_UNSPECIFIED,
5626 false);
5627 }
5628
5629 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
5630 err = -EBUSY;
5631 goto err_free;
5632 }
5633
5634 if (ifmgd->assoc_data) {
5635 err = -EBUSY;
5636 goto err_free;
5637 }
5638
5639 if (ifmgd->auth_data) {
5640 bool match;
5641
5642
5643 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
5644 ieee80211_destroy_auth_data(sdata, match);
5645 }
5646
5647
5648
5649 ifmgd->beacon_crc_valid = false;
5650
5651 assoc_data->wmm = bss->wmm_used &&
5652 (local->hw.queues >= IEEE80211_NUM_ACS);
5653
5654
5655
5656
5657
5658
5659
5660
5661 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
5662 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
5663 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
5664 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
5665 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5666 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5667 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5668 netdev_info(sdata->dev,
5669 "disabling HT/VHT/HE due to WEP/TKIP use\n");
5670 }
5671 }
5672
5673 sband = local->hw.wiphy->bands[req->bss->channel->band];
5674
5675
5676 if (!bss->wmm_used) {
5677 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5678 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5679 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5680 netdev_info(sdata->dev,
5681 "disabling HT/VHT/HE as WMM/QoS is not supported by the AP\n");
5682 }
5683
5684 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
5685 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
5686 sizeof(ifmgd->ht_capa_mask));
5687
5688 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
5689 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
5690 sizeof(ifmgd->vht_capa_mask));
5691
5692 memcpy(&ifmgd->s1g_capa, &req->s1g_capa, sizeof(ifmgd->s1g_capa));
5693 memcpy(&ifmgd->s1g_capa_mask, &req->s1g_capa_mask,
5694 sizeof(ifmgd->s1g_capa_mask));
5695
5696 if (req->ie && req->ie_len) {
5697 memcpy(assoc_data->ie, req->ie, req->ie_len);
5698 assoc_data->ie_len = req->ie_len;
5699 }
5700
5701 if (req->fils_kek) {
5702
5703 if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) {
5704 err = -EINVAL;
5705 goto err_free;
5706 }
5707 memcpy(assoc_data->fils_kek, req->fils_kek,
5708 req->fils_kek_len);
5709 assoc_data->fils_kek_len = req->fils_kek_len;
5710 }
5711
5712 if (req->fils_nonces)
5713 memcpy(assoc_data->fils_nonces, req->fils_nonces,
5714 2 * FILS_NONCE_LEN);
5715
5716 assoc_data->bss = req->bss;
5717 assoc_data->capability = req->bss->capability;
5718 assoc_data->supp_rates = bss->supp_rates;
5719 assoc_data->supp_rates_len = bss->supp_rates_len;
5720
5721 rcu_read_lock();
5722 ht_elem = ieee80211_bss_get_elem(req->bss, WLAN_EID_HT_OPERATION);
5723 if (ht_elem && ht_elem->datalen >= sizeof(struct ieee80211_ht_operation))
5724 assoc_data->ap_ht_param =
5725 ((struct ieee80211_ht_operation *)(ht_elem->data))->ht_param;
5726 else if (!is_6ghz)
5727 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5728 vht_elem = ieee80211_bss_get_elem(req->bss, WLAN_EID_VHT_CAPABILITY);
5729 if (vht_elem && vht_elem->datalen >= sizeof(struct ieee80211_vht_cap)) {
5730 memcpy(&assoc_data->ap_vht_cap, vht_elem->data,
5731 sizeof(struct ieee80211_vht_cap));
5732 } else if (is_5ghz) {
5733 sdata_info(sdata, "VHT capa missing/short, disabling VHT/HE\n");
5734 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT |
5735 IEEE80211_STA_DISABLE_HE;
5736 }
5737 rcu_read_unlock();
5738
5739 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
5740 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
5741 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
5742 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
5743
5744 if (bss->wmm_used && bss->uapsd_supported &&
5745 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
5746 assoc_data->uapsd = true;
5747 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
5748 } else {
5749 assoc_data->uapsd = false;
5750 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
5751 }
5752
5753 if (req->prev_bssid)
5754 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
5755
5756 if (req->use_mfp) {
5757 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
5758 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
5759 } else {
5760 ifmgd->mfp = IEEE80211_MFP_DISABLED;
5761 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
5762 }
5763
5764 if (req->flags & ASSOC_REQ_USE_RRM)
5765 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
5766 else
5767 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
5768
5769 if (req->crypto.control_port)
5770 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
5771 else
5772 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
5773
5774 sdata->control_port_protocol = req->crypto.control_port_ethertype;
5775 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
5776 sdata->control_port_over_nl80211 =
5777 req->crypto.control_port_over_nl80211;
5778 sdata->control_port_no_preauth = req->crypto.control_port_no_preauth;
5779 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
5780 sdata->vif.type);
5781
5782
5783
5784 ifmgd->assoc_data = assoc_data;
5785 ifmgd->dtim_period = 0;
5786 ifmgd->have_beacon = false;
5787
5788
5789 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
5790 struct ieee80211_sta_ht_cap sta_ht_cap;
5791
5792 if (req->flags & ASSOC_REQ_DISABLE_HT)
5793 override = true;
5794
5795 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
5796 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
5797
5798
5799 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) &&
5800 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
5801 !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
5802 override = true;
5803
5804 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
5805 req->flags & ASSOC_REQ_DISABLE_VHT)
5806 override = true;
5807 }
5808
5809 if (req->flags & ASSOC_REQ_DISABLE_HT) {
5810 mlme_dbg(sdata, "HT disabled by flag, disabling HT/VHT/HE\n");
5811 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5812 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5813 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5814 }
5815
5816 if (req->flags & ASSOC_REQ_DISABLE_VHT) {
5817 mlme_dbg(sdata, "VHT disabled by flag, disabling VHT\n");
5818 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5819 }
5820
5821 if (req->flags & ASSOC_REQ_DISABLE_HE) {
5822 mlme_dbg(sdata, "HE disabled by flag, disabling VHT\n");
5823 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5824 }
5825
5826 err = ieee80211_prep_connection(sdata, req->bss, true, override);
5827 if (err)
5828 goto err_clear;
5829
5830 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
5831 if (ifmgd->powersave)
5832 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
5833 else
5834 sdata->smps_mode = IEEE80211_SMPS_OFF;
5835 } else {
5836 sdata->smps_mode = ifmgd->req_smps;
5837 }
5838
5839 rcu_read_lock();
5840 beacon_ies = rcu_dereference(req->bss->beacon_ies);
5841
5842 if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) &&
5843 !beacon_ies) {
5844
5845
5846
5847
5848 sdata_info(sdata, "waiting for beacon from %pM\n",
5849 ifmgd->bssid);
5850 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
5851 assoc_data->timeout_started = true;
5852 assoc_data->need_beacon = true;
5853 } else if (beacon_ies) {
5854 const struct element *elem;
5855 u8 dtim_count = 0;
5856
5857 ieee80211_get_dtim(beacon_ies, &dtim_count,
5858 &ifmgd->dtim_period);
5859
5860 ifmgd->have_beacon = true;
5861 assoc_data->timeout = jiffies;
5862 assoc_data->timeout_started = true;
5863
5864 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
5865 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
5866 sdata->vif.bss_conf.sync_device_ts =
5867 bss->device_ts_beacon;
5868 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
5869 }
5870
5871 elem = cfg80211_find_ext_elem(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION,
5872 beacon_ies->data, beacon_ies->len);
5873 if (elem && elem->datalen >= 3)
5874 sdata->vif.bss_conf.profile_periodicity = elem->data[2];
5875 else
5876 sdata->vif.bss_conf.profile_periodicity = 0;
5877
5878 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
5879 beacon_ies->data, beacon_ies->len);
5880 if (elem && elem->datalen >= 11 &&
5881 (elem->data[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
5882 sdata->vif.bss_conf.ema_ap = true;
5883 else
5884 sdata->vif.bss_conf.ema_ap = false;
5885 } else {
5886 assoc_data->timeout = jiffies;
5887 assoc_data->timeout_started = true;
5888 }
5889 rcu_read_unlock();
5890
5891 run_again(sdata, assoc_data->timeout);
5892
5893 if (bss->corrupt_data) {
5894 char *corrupt_type = "data";
5895 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
5896 if (bss->corrupt_data &
5897 IEEE80211_BSS_CORRUPT_PROBE_RESP)
5898 corrupt_type = "beacon and probe response";
5899 else
5900 corrupt_type = "beacon";
5901 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
5902 corrupt_type = "probe response";
5903 sdata_info(sdata, "associating with AP with corrupt %s\n",
5904 corrupt_type);
5905 }
5906
5907 return 0;
5908 err_clear:
5909 eth_zero_addr(ifmgd->bssid);
5910 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
5911 ifmgd->assoc_data = NULL;
5912 err_free:
5913 kfree(assoc_data);
5914 return err;
5915}
5916
5917int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
5918 struct cfg80211_deauth_request *req)
5919{
5920 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5921 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5922 bool tx = !req->local_state_change;
5923 struct ieee80211_prep_tx_info info = {
5924 .subtype = IEEE80211_STYPE_DEAUTH,
5925 };
5926
5927 if (ifmgd->auth_data &&
5928 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
5929 sdata_info(sdata,
5930 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
5931 req->bssid, req->reason_code,
5932 ieee80211_get_reason_code_string(req->reason_code));
5933
5934 drv_mgd_prepare_tx(sdata->local, sdata, &info);
5935 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
5936 IEEE80211_STYPE_DEAUTH,
5937 req->reason_code, tx,
5938 frame_buf);
5939 ieee80211_destroy_auth_data(sdata, false);
5940 ieee80211_report_disconnect(sdata, frame_buf,
5941 sizeof(frame_buf), true,
5942 req->reason_code, false);
5943 drv_mgd_complete_tx(sdata->local, sdata, &info);
5944 return 0;
5945 }
5946
5947 if (ifmgd->assoc_data &&
5948 ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
5949 sdata_info(sdata,
5950 "aborting association with %pM by local choice (Reason: %u=%s)\n",
5951 req->bssid, req->reason_code,
5952 ieee80211_get_reason_code_string(req->reason_code));
5953
5954 drv_mgd_prepare_tx(sdata->local, sdata, &info);
5955 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
5956 IEEE80211_STYPE_DEAUTH,
5957 req->reason_code, tx,
5958 frame_buf);
5959 ieee80211_destroy_assoc_data(sdata, false, true);
5960 ieee80211_report_disconnect(sdata, frame_buf,
5961 sizeof(frame_buf), true,
5962 req->reason_code, false);
5963 return 0;
5964 }
5965
5966 if (ifmgd->associated &&
5967 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
5968 sdata_info(sdata,
5969 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
5970 req->bssid, req->reason_code,
5971 ieee80211_get_reason_code_string(req->reason_code));
5972
5973 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5974 req->reason_code, tx, frame_buf);
5975 ieee80211_report_disconnect(sdata, frame_buf,
5976 sizeof(frame_buf), true,
5977 req->reason_code, false);
5978 drv_mgd_complete_tx(sdata->local, sdata, &info);
5979 return 0;
5980 }
5981
5982 return -ENOTCONN;
5983}
5984
5985int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
5986 struct cfg80211_disassoc_request *req)
5987{
5988 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5989 u8 bssid[ETH_ALEN];
5990 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5991
5992
5993
5994
5995
5996
5997
5998 if (ifmgd->associated != req->bss)
5999 return -ENOLINK;
6000
6001 sdata_info(sdata,
6002 "disassociating from %pM by local choice (Reason: %u=%s)\n",
6003 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
6004
6005 memcpy(bssid, req->bss->bssid, ETH_ALEN);
6006 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
6007 req->reason_code, !req->local_state_change,
6008 frame_buf);
6009
6010 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
6011 req->reason_code, false);
6012
6013 return 0;
6014}
6015
6016void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
6017{
6018 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6019
6020
6021
6022
6023
6024
6025 cancel_work_sync(&ifmgd->monitor_work);
6026 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
6027 cancel_work_sync(&ifmgd->request_smps_work);
6028 cancel_work_sync(&ifmgd->csa_connection_drop_work);
6029 cancel_work_sync(&ifmgd->chswitch_work);
6030 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
6031
6032 sdata_lock(sdata);
6033 if (ifmgd->assoc_data) {
6034 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
6035 ieee80211_destroy_assoc_data(sdata, false, false);
6036 cfg80211_assoc_timeout(sdata->dev, bss);
6037 }
6038 if (ifmgd->auth_data)
6039 ieee80211_destroy_auth_data(sdata, false);
6040 spin_lock_bh(&ifmgd->teardown_lock);
6041 if (ifmgd->teardown_skb) {
6042 kfree_skb(ifmgd->teardown_skb);
6043 ifmgd->teardown_skb = NULL;
6044 ifmgd->orig_teardown_skb = NULL;
6045 }
6046 kfree(ifmgd->assoc_req_ies);
6047 ifmgd->assoc_req_ies = NULL;
6048 ifmgd->assoc_req_ies_len = 0;
6049 spin_unlock_bh(&ifmgd->teardown_lock);
6050 del_timer_sync(&ifmgd->timer);
6051 sdata_unlock(sdata);
6052}
6053
6054void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
6055 enum nl80211_cqm_rssi_threshold_event rssi_event,
6056 s32 rssi_level,
6057 gfp_t gfp)
6058{
6059 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
6060
6061 trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level);
6062
6063 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp);
6064}
6065EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
6066
6067void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
6068{
6069 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
6070
6071 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
6072
6073 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
6074}
6075EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);
6076