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17#include <linux/delay.h>
18#include <linux/if_ether.h>
19#include <linux/skbuff.h>
20#include <linux/if_arp.h>
21#include <linux/etherdevice.h>
22#include <linux/moduleparam.h>
23#include <linux/rtnetlink.h>
24#include <linux/crc32.h>
25#include <linux/slab.h>
26#include <linux/export.h>
27#include <net/mac80211.h>
28#include <asm/unaligned.h>
29
30#include "ieee80211_i.h"
31#include "driver-ops.h"
32#include "rate.h"
33#include "led.h"
34#include "fils_aead.h"
35
36#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
37#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
38#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
39#define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2)
40#define IEEE80211_AUTH_MAX_TRIES 3
41#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
42#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
43#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
44#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
45#define IEEE80211_ASSOC_MAX_TRIES 3
46
47static int max_nullfunc_tries = 2;
48module_param(max_nullfunc_tries, int, 0644);
49MODULE_PARM_DESC(max_nullfunc_tries,
50 "Maximum nullfunc tx tries before disconnecting (reason 4).");
51
52static int max_probe_tries = 5;
53module_param(max_probe_tries, int, 0644);
54MODULE_PARM_DESC(max_probe_tries,
55 "Maximum probe tries before disconnecting (reason 4).");
56
57
58
59
60
61
62
63
64
65static int beacon_loss_count = 7;
66module_param(beacon_loss_count, int, 0644);
67MODULE_PARM_DESC(beacon_loss_count,
68 "Number of beacon intervals before we decide beacon was lost.");
69
70
71
72
73
74#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
75
76
77
78
79
80static int probe_wait_ms = 500;
81module_param(probe_wait_ms, int, 0644);
82MODULE_PARM_DESC(probe_wait_ms,
83 "Maximum time(ms) to wait for probe response"
84 " before disconnecting (reason 4).");
85
86
87
88
89
90#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
91
92
93
94
95
96
97
98
99
100
101
102static void run_again(struct ieee80211_sub_if_data *sdata,
103 unsigned long timeout)
104{
105 sdata_assert_lock(sdata);
106
107 if (!timer_pending(&sdata->u.mgd.timer) ||
108 time_before(timeout, sdata->u.mgd.timer.expires))
109 mod_timer(&sdata->u.mgd.timer, timeout);
110}
111
112void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
113{
114 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
115 return;
116
117 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
118 return;
119
120 mod_timer(&sdata->u.mgd.bcn_mon_timer,
121 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
122}
123
124void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
125{
126 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
127
128 if (unlikely(!ifmgd->associated))
129 return;
130
131 if (ifmgd->probe_send_count)
132 ifmgd->probe_send_count = 0;
133
134 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
135 return;
136
137 mod_timer(&ifmgd->conn_mon_timer,
138 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
139}
140
141static int ecw2cw(int ecw)
142{
143 return (1 << ecw) - 1;
144}
145
146static u32
147ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
148 struct ieee80211_supported_band *sband,
149 struct ieee80211_channel *channel,
150 const struct ieee80211_ht_operation *ht_oper,
151 const struct ieee80211_vht_operation *vht_oper,
152 struct cfg80211_chan_def *chandef, bool tracking)
153{
154 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
155 struct cfg80211_chan_def vht_chandef;
156 struct ieee80211_sta_ht_cap sta_ht_cap;
157 u32 ht_cfreq, ret;
158
159 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
160 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
161
162 chandef->chan = channel;
163 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
164 chandef->center_freq1 = channel->center_freq;
165 chandef->center_freq2 = 0;
166
167 if (!ht_oper || !sta_ht_cap.ht_supported) {
168 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
169 goto out;
170 }
171
172 chandef->width = NL80211_CHAN_WIDTH_20;
173
174 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
175 channel->band);
176
177 if (!tracking && channel->center_freq != ht_cfreq) {
178
179
180
181
182
183
184
185 sdata_info(sdata,
186 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
187 channel->center_freq, ht_cfreq,
188 ht_oper->primary_chan, channel->band);
189 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
190 goto out;
191 }
192
193
194 if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
195 ieee80211_chandef_ht_oper(ht_oper, chandef);
196 } else {
197
198 ret = IEEE80211_STA_DISABLE_VHT;
199
200 ret |= IEEE80211_STA_DISABLE_40MHZ;
201 goto out;
202 }
203
204 if (!vht_oper || !sband->vht_cap.vht_supported) {
205 ret = IEEE80211_STA_DISABLE_VHT;
206 goto out;
207 }
208
209 vht_chandef = *chandef;
210 if (!ieee80211_chandef_vht_oper(vht_oper, &vht_chandef)) {
211 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
212 sdata_info(sdata,
213 "AP VHT information is invalid, disable VHT\n");
214 ret = IEEE80211_STA_DISABLE_VHT;
215 goto out;
216 }
217
218 if (!cfg80211_chandef_valid(&vht_chandef)) {
219 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
220 sdata_info(sdata,
221 "AP VHT information is invalid, disable VHT\n");
222 ret = IEEE80211_STA_DISABLE_VHT;
223 goto out;
224 }
225
226 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
227 ret = 0;
228 goto out;
229 }
230
231 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
232 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
233 sdata_info(sdata,
234 "AP VHT information doesn't match HT, disable VHT\n");
235 ret = IEEE80211_STA_DISABLE_VHT;
236 goto out;
237 }
238
239 *chandef = vht_chandef;
240
241 ret = 0;
242
243out:
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262 if (tracking &&
263 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
264 return ret;
265
266
267 if (ret & IEEE80211_STA_DISABLE_VHT)
268 vht_chandef = *chandef;
269
270
271
272
273
274
275
276
277
278 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
279 tracking ? 0 :
280 IEEE80211_CHAN_DISABLED)) {
281 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
282 ret = IEEE80211_STA_DISABLE_HT |
283 IEEE80211_STA_DISABLE_VHT;
284 break;
285 }
286
287 ret |= ieee80211_chandef_downgrade(chandef);
288 }
289
290 if (chandef->width != vht_chandef.width && !tracking)
291 sdata_info(sdata,
292 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
293
294 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
295 return ret;
296}
297
298static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
299 struct sta_info *sta,
300 const struct ieee80211_ht_cap *ht_cap,
301 const struct ieee80211_ht_operation *ht_oper,
302 const struct ieee80211_vht_operation *vht_oper,
303 const u8 *bssid, u32 *changed)
304{
305 struct ieee80211_local *local = sdata->local;
306 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
307 struct ieee80211_supported_band *sband;
308 struct ieee80211_channel *chan;
309 struct cfg80211_chan_def chandef;
310 u16 ht_opmode;
311 u32 flags;
312 enum ieee80211_sta_rx_bandwidth new_sta_bw;
313 int ret;
314
315
316 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
317 return 0;
318
319
320 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
321 vht_oper = NULL;
322
323 if (WARN_ON_ONCE(!sta))
324 return -EINVAL;
325
326
327
328
329
330 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
331 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
332 *changed |= BSS_CHANGED_HT;
333 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
334 }
335
336 chan = sdata->vif.bss_conf.chandef.chan;
337 sband = local->hw.wiphy->bands[chan->band];
338
339
340 flags = ieee80211_determine_chantype(sdata, sband, chan,
341 ht_oper, vht_oper,
342 &chandef, true);
343
344
345
346
347
348
349
350
351 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
352 chandef.width == NL80211_CHAN_WIDTH_80P80)
353 flags |= ieee80211_chandef_downgrade(&chandef);
354 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
355 chandef.width == NL80211_CHAN_WIDTH_160)
356 flags |= ieee80211_chandef_downgrade(&chandef);
357 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
358 chandef.width > NL80211_CHAN_WIDTH_20)
359 flags |= ieee80211_chandef_downgrade(&chandef);
360
361 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
362 return 0;
363
364 sdata_info(sdata,
365 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
366 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
367 chandef.center_freq1, chandef.center_freq2);
368
369 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
370 IEEE80211_STA_DISABLE_VHT |
371 IEEE80211_STA_DISABLE_40MHZ |
372 IEEE80211_STA_DISABLE_80P80MHZ |
373 IEEE80211_STA_DISABLE_160MHZ)) ||
374 !cfg80211_chandef_valid(&chandef)) {
375 sdata_info(sdata,
376 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
377 ifmgd->bssid);
378 return -EINVAL;
379 }
380
381 switch (chandef.width) {
382 case NL80211_CHAN_WIDTH_20_NOHT:
383 case NL80211_CHAN_WIDTH_20:
384 new_sta_bw = IEEE80211_STA_RX_BW_20;
385 break;
386 case NL80211_CHAN_WIDTH_40:
387 new_sta_bw = IEEE80211_STA_RX_BW_40;
388 break;
389 case NL80211_CHAN_WIDTH_80:
390 new_sta_bw = IEEE80211_STA_RX_BW_80;
391 break;
392 case NL80211_CHAN_WIDTH_80P80:
393 case NL80211_CHAN_WIDTH_160:
394 new_sta_bw = IEEE80211_STA_RX_BW_160;
395 break;
396 default:
397 return -EINVAL;
398 }
399
400 if (new_sta_bw > sta->cur_max_bandwidth)
401 new_sta_bw = sta->cur_max_bandwidth;
402
403 if (new_sta_bw < sta->sta.bandwidth) {
404 sta->sta.bandwidth = new_sta_bw;
405 rate_control_rate_update(local, sband, sta,
406 IEEE80211_RC_BW_CHANGED);
407 }
408
409 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
410 if (ret) {
411 sdata_info(sdata,
412 "AP %pM changed bandwidth to incompatible one - disconnect\n",
413 ifmgd->bssid);
414 return ret;
415 }
416
417 if (new_sta_bw > sta->sta.bandwidth) {
418 sta->sta.bandwidth = new_sta_bw;
419 rate_control_rate_update(local, sband, sta,
420 IEEE80211_RC_BW_CHANGED);
421 }
422
423 return 0;
424}
425
426
427
428static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
429 struct sk_buff *skb, u8 ap_ht_param,
430 struct ieee80211_supported_band *sband,
431 struct ieee80211_channel *channel,
432 enum ieee80211_smps_mode smps)
433{
434 u8 *pos;
435 u32 flags = channel->flags;
436 u16 cap;
437 struct ieee80211_sta_ht_cap ht_cap;
438
439 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
440
441 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
442 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
443
444
445 cap = ht_cap.cap;
446
447 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
448 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
449 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
450 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
451 cap &= ~IEEE80211_HT_CAP_SGI_40;
452 }
453 break;
454 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
455 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
456 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
457 cap &= ~IEEE80211_HT_CAP_SGI_40;
458 }
459 break;
460 }
461
462
463
464
465
466
467 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
468 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
469 cap &= ~IEEE80211_HT_CAP_SGI_40;
470 }
471
472
473 cap &= ~IEEE80211_HT_CAP_SM_PS;
474 switch (smps) {
475 case IEEE80211_SMPS_AUTOMATIC:
476 case IEEE80211_SMPS_NUM_MODES:
477 WARN_ON(1);
478
479 case IEEE80211_SMPS_OFF:
480 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
481 IEEE80211_HT_CAP_SM_PS_SHIFT;
482 break;
483 case IEEE80211_SMPS_STATIC:
484 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
485 IEEE80211_HT_CAP_SM_PS_SHIFT;
486 break;
487 case IEEE80211_SMPS_DYNAMIC:
488 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
489 IEEE80211_HT_CAP_SM_PS_SHIFT;
490 break;
491 }
492
493
494 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
495 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
496}
497
498
499
500
501
502static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
503 struct sk_buff *skb,
504 struct ieee80211_supported_band *sband,
505 struct ieee80211_vht_cap *ap_vht_cap)
506{
507 struct ieee80211_local *local = sdata->local;
508 u8 *pos;
509 u32 cap;
510 struct ieee80211_sta_vht_cap vht_cap;
511 u32 mask, ap_bf_sts, our_bf_sts;
512
513 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
514
515 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
516 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
517
518
519 cap = vht_cap.cap;
520
521 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
522 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
523
524 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
525 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
526 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
527 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
528 }
529
530 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
531 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
532 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
533 }
534
535
536
537
538
539 if (!(ap_vht_cap->vht_cap_info &
540 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
541 cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
542 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
543 else if (!(ap_vht_cap->vht_cap_info &
544 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
545 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
546
547
548
549
550
551
552
553
554 if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
555 bool disable_mu_mimo = false;
556 struct ieee80211_sub_if_data *other;
557
558 list_for_each_entry_rcu(other, &local->interfaces, list) {
559 if (other->vif.mu_mimo_owner) {
560 disable_mu_mimo = true;
561 break;
562 }
563 }
564 if (disable_mu_mimo)
565 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
566 else
567 sdata->vif.mu_mimo_owner = true;
568 }
569
570 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
571
572 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
573 our_bf_sts = cap & mask;
574
575 if (ap_bf_sts < our_bf_sts) {
576 cap &= ~mask;
577 cap |= ap_bf_sts;
578 }
579
580
581 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
582 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
583}
584
585static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
586{
587 struct ieee80211_local *local = sdata->local;
588 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
589 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
590 struct sk_buff *skb;
591 struct ieee80211_mgmt *mgmt;
592 u8 *pos, qos_info;
593 size_t offset = 0, noffset;
594 int i, count, rates_len, supp_rates_len, shift;
595 u16 capab;
596 struct ieee80211_supported_band *sband;
597 struct ieee80211_chanctx_conf *chanctx_conf;
598 struct ieee80211_channel *chan;
599 u32 rates = 0;
600
601 sdata_assert_lock(sdata);
602
603 rcu_read_lock();
604 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
605 if (WARN_ON(!chanctx_conf)) {
606 rcu_read_unlock();
607 return;
608 }
609 chan = chanctx_conf->def.chan;
610 rcu_read_unlock();
611 sband = local->hw.wiphy->bands[chan->band];
612 shift = ieee80211_vif_get_shift(&sdata->vif);
613
614 if (assoc_data->supp_rates_len) {
615
616
617
618
619
620
621 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
622 assoc_data->supp_rates,
623 assoc_data->supp_rates_len,
624 &rates);
625 } else {
626
627
628
629
630
631 rates_len = 0;
632 for (i = 0; i < sband->n_bitrates; i++) {
633 rates |= BIT(i);
634 rates_len++;
635 }
636 }
637
638 skb = alloc_skb(local->hw.extra_tx_headroom +
639 sizeof(*mgmt) +
640 2 + assoc_data->ssid_len +
641 4 + rates_len +
642 4 +
643 2 + 2 * sband->n_channels +
644 2 + sizeof(struct ieee80211_ht_cap) +
645 2 + sizeof(struct ieee80211_vht_cap) +
646 assoc_data->ie_len +
647 (assoc_data->fils_kek_len ? 16 : 0) +
648 9,
649 GFP_KERNEL);
650 if (!skb)
651 return;
652
653 skb_reserve(skb, local->hw.extra_tx_headroom);
654
655 capab = WLAN_CAPABILITY_ESS;
656
657 if (sband->band == NL80211_BAND_2GHZ) {
658 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
659 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
660 }
661
662 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
663 capab |= WLAN_CAPABILITY_PRIVACY;
664
665 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
666 ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
667 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
668
669 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
670 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
671
672 mgmt = skb_put_zero(skb, 24);
673 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
674 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
675 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
676
677 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
678 skb_put(skb, 10);
679 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
680 IEEE80211_STYPE_REASSOC_REQ);
681 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
682 mgmt->u.reassoc_req.listen_interval =
683 cpu_to_le16(local->hw.conf.listen_interval);
684 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
685 ETH_ALEN);
686 } else {
687 skb_put(skb, 4);
688 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
689 IEEE80211_STYPE_ASSOC_REQ);
690 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
691 mgmt->u.assoc_req.listen_interval =
692 cpu_to_le16(local->hw.conf.listen_interval);
693 }
694
695
696 pos = skb_put(skb, 2 + assoc_data->ssid_len);
697 *pos++ = WLAN_EID_SSID;
698 *pos++ = assoc_data->ssid_len;
699 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
700
701
702 supp_rates_len = rates_len;
703 if (supp_rates_len > 8)
704 supp_rates_len = 8;
705
706 pos = skb_put(skb, supp_rates_len + 2);
707 *pos++ = WLAN_EID_SUPP_RATES;
708 *pos++ = supp_rates_len;
709
710 count = 0;
711 for (i = 0; i < sband->n_bitrates; i++) {
712 if (BIT(i) & rates) {
713 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
714 5 * (1 << shift));
715 *pos++ = (u8) rate;
716 if (++count == 8)
717 break;
718 }
719 }
720
721 if (rates_len > count) {
722 pos = skb_put(skb, rates_len - count + 2);
723 *pos++ = WLAN_EID_EXT_SUPP_RATES;
724 *pos++ = rates_len - count;
725
726 for (i++; i < sband->n_bitrates; i++) {
727 if (BIT(i) & rates) {
728 int rate;
729 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
730 5 * (1 << shift));
731 *pos++ = (u8) rate;
732 }
733 }
734 }
735
736 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
737 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
738 pos = skb_put(skb, 4);
739 *pos++ = WLAN_EID_PWR_CAPABILITY;
740 *pos++ = 2;
741 *pos++ = 0;
742
743 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
744 }
745
746 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
747
748 pos = skb_put(skb, 2 * sband->n_channels + 2);
749 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
750 *pos++ = 2 * sband->n_channels;
751 for (i = 0; i < sband->n_channels; i++) {
752 *pos++ = ieee80211_frequency_to_channel(
753 sband->channels[i].center_freq);
754 *pos++ = 1;
755 }
756 }
757
758
759 if (assoc_data->ie_len) {
760 static const u8 before_ht[] = {
761 WLAN_EID_SSID,
762 WLAN_EID_SUPP_RATES,
763 WLAN_EID_EXT_SUPP_RATES,
764 WLAN_EID_PWR_CAPABILITY,
765 WLAN_EID_SUPPORTED_CHANNELS,
766 WLAN_EID_RSN,
767 WLAN_EID_QOS_CAPA,
768 WLAN_EID_RRM_ENABLED_CAPABILITIES,
769 WLAN_EID_MOBILITY_DOMAIN,
770 WLAN_EID_FAST_BSS_TRANSITION,
771 WLAN_EID_RIC_DATA,
772 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
773 };
774 static const u8 after_ric[] = {
775 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
776 WLAN_EID_HT_CAPABILITY,
777 WLAN_EID_BSS_COEX_2040,
778
779 WLAN_EID_EXT_CAPABILITY,
780 WLAN_EID_QOS_TRAFFIC_CAPA,
781 WLAN_EID_TIM_BCAST_REQ,
782 WLAN_EID_INTERWORKING,
783
784 WLAN_EID_VHT_CAPABILITY,
785 WLAN_EID_OPMODE_NOTIF,
786 };
787
788 noffset = ieee80211_ie_split_ric(assoc_data->ie,
789 assoc_data->ie_len,
790 before_ht,
791 ARRAY_SIZE(before_ht),
792 after_ric,
793 ARRAY_SIZE(after_ric),
794 offset);
795 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
796 offset = noffset;
797 }
798
799 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
800 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
801 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
802
803 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
804 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
805 sband, chan, sdata->smps_mode);
806
807
808 if (assoc_data->ie_len) {
809 static const u8 before_vht[] = {
810
811
812
813
814 WLAN_EID_BSS_COEX_2040,
815 WLAN_EID_EXT_CAPABILITY,
816 WLAN_EID_QOS_TRAFFIC_CAPA,
817 WLAN_EID_TIM_BCAST_REQ,
818 WLAN_EID_INTERWORKING,
819
820 };
821
822
823 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
824 before_vht, ARRAY_SIZE(before_vht),
825 offset);
826 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
827 offset = noffset;
828 }
829
830 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
831 ieee80211_add_vht_ie(sdata, skb, sband,
832 &assoc_data->ap_vht_cap);
833
834
835 if (assoc_data->ie_len) {
836 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
837 assoc_data->ie_len,
838 offset);
839 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
840 offset = noffset;
841 }
842
843 if (assoc_data->wmm) {
844 if (assoc_data->uapsd) {
845 qos_info = ifmgd->uapsd_queues;
846 qos_info |= (ifmgd->uapsd_max_sp_len <<
847 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
848 } else {
849 qos_info = 0;
850 }
851
852 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
853 }
854
855
856 if (assoc_data->ie_len) {
857 noffset = assoc_data->ie_len;
858 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
859 }
860
861 if (assoc_data->fils_kek_len &&
862 fils_encrypt_assoc_req(skb, assoc_data) < 0) {
863 dev_kfree_skb(skb);
864 return;
865 }
866
867 drv_mgd_prepare_tx(local, sdata);
868
869 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
870 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
871 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
872 IEEE80211_TX_INTFL_MLME_CONN_TX;
873 ieee80211_tx_skb(sdata, skb);
874}
875
876void ieee80211_send_pspoll(struct ieee80211_local *local,
877 struct ieee80211_sub_if_data *sdata)
878{
879 struct ieee80211_pspoll *pspoll;
880 struct sk_buff *skb;
881
882 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
883 if (!skb)
884 return;
885
886 pspoll = (struct ieee80211_pspoll *) skb->data;
887 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
888
889 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
890 ieee80211_tx_skb(sdata, skb);
891}
892
893void ieee80211_send_nullfunc(struct ieee80211_local *local,
894 struct ieee80211_sub_if_data *sdata,
895 bool powersave)
896{
897 struct sk_buff *skb;
898 struct ieee80211_hdr_3addr *nullfunc;
899 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
900
901 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
902 !ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP));
903 if (!skb)
904 return;
905
906 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
907 if (powersave)
908 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
909
910 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
911 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
912
913 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
914 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
915
916 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
917 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
918
919 ieee80211_tx_skb(sdata, skb);
920}
921
922static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
923 struct ieee80211_sub_if_data *sdata)
924{
925 struct sk_buff *skb;
926 struct ieee80211_hdr *nullfunc;
927 __le16 fc;
928
929 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
930 return;
931
932 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
933 if (!skb)
934 return;
935
936 skb_reserve(skb, local->hw.extra_tx_headroom);
937
938 nullfunc = skb_put_zero(skb, 30);
939 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
940 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
941 nullfunc->frame_control = fc;
942 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
943 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
944 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
945 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
946
947 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
948 ieee80211_tx_skb(sdata, skb);
949}
950
951
952static void ieee80211_chswitch_work(struct work_struct *work)
953{
954 struct ieee80211_sub_if_data *sdata =
955 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
956 struct ieee80211_local *local = sdata->local;
957 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
958 int ret;
959
960 if (!ieee80211_sdata_running(sdata))
961 return;
962
963 sdata_lock(sdata);
964 mutex_lock(&local->mtx);
965 mutex_lock(&local->chanctx_mtx);
966
967 if (!ifmgd->associated)
968 goto out;
969
970 if (!sdata->vif.csa_active)
971 goto out;
972
973
974
975
976
977
978
979
980 if (sdata->reserved_chanctx) {
981
982
983
984
985
986 if (sdata->reserved_ready)
987 goto out;
988
989 ret = ieee80211_vif_use_reserved_context(sdata);
990 if (ret) {
991 sdata_info(sdata,
992 "failed to use reserved channel context, disconnecting (err=%d)\n",
993 ret);
994 ieee80211_queue_work(&sdata->local->hw,
995 &ifmgd->csa_connection_drop_work);
996 goto out;
997 }
998
999 goto out;
1000 }
1001
1002 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1003 &sdata->csa_chandef)) {
1004 sdata_info(sdata,
1005 "failed to finalize channel switch, disconnecting\n");
1006 ieee80211_queue_work(&sdata->local->hw,
1007 &ifmgd->csa_connection_drop_work);
1008 goto out;
1009 }
1010
1011
1012 ifmgd->associated->channel = sdata->csa_chandef.chan;
1013
1014 ifmgd->csa_waiting_bcn = true;
1015
1016 ieee80211_sta_reset_beacon_monitor(sdata);
1017 ieee80211_sta_reset_conn_monitor(sdata);
1018
1019out:
1020 mutex_unlock(&local->chanctx_mtx);
1021 mutex_unlock(&local->mtx);
1022 sdata_unlock(sdata);
1023}
1024
1025static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1026{
1027 struct ieee80211_local *local = sdata->local;
1028 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1029 int ret;
1030
1031 sdata_assert_lock(sdata);
1032
1033 WARN_ON(!sdata->vif.csa_active);
1034
1035 if (sdata->csa_block_tx) {
1036 ieee80211_wake_vif_queues(local, sdata,
1037 IEEE80211_QUEUE_STOP_REASON_CSA);
1038 sdata->csa_block_tx = false;
1039 }
1040
1041 sdata->vif.csa_active = false;
1042 ifmgd->csa_waiting_bcn = false;
1043
1044 ret = drv_post_channel_switch(sdata);
1045 if (ret) {
1046 sdata_info(sdata,
1047 "driver post channel switch failed, disconnecting\n");
1048 ieee80211_queue_work(&local->hw,
1049 &ifmgd->csa_connection_drop_work);
1050 return;
1051 }
1052
1053 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
1054}
1055
1056void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1057{
1058 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1059 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1060
1061 trace_api_chswitch_done(sdata, success);
1062 if (!success) {
1063 sdata_info(sdata,
1064 "driver channel switch failed, disconnecting\n");
1065 ieee80211_queue_work(&sdata->local->hw,
1066 &ifmgd->csa_connection_drop_work);
1067 } else {
1068 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
1069 }
1070}
1071EXPORT_SYMBOL(ieee80211_chswitch_done);
1072
1073static void ieee80211_chswitch_timer(struct timer_list *t)
1074{
1075 struct ieee80211_sub_if_data *sdata =
1076 from_timer(sdata, t, u.mgd.chswitch_timer);
1077
1078 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
1079}
1080
1081static void
1082ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1083 u64 timestamp, u32 device_timestamp,
1084 struct ieee802_11_elems *elems,
1085 bool beacon)
1086{
1087 struct ieee80211_local *local = sdata->local;
1088 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1089 struct cfg80211_bss *cbss = ifmgd->associated;
1090 struct ieee80211_chanctx_conf *conf;
1091 struct ieee80211_chanctx *chanctx;
1092 enum nl80211_band current_band;
1093 struct ieee80211_csa_ie csa_ie;
1094 struct ieee80211_channel_switch ch_switch;
1095 int res;
1096
1097 sdata_assert_lock(sdata);
1098
1099 if (!cbss)
1100 return;
1101
1102 if (local->scanning)
1103 return;
1104
1105
1106 if (sdata->vif.csa_active)
1107 return;
1108
1109 current_band = cbss->channel->band;
1110 res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
1111 ifmgd->flags,
1112 ifmgd->associated->bssid, &csa_ie);
1113 if (res < 0)
1114 ieee80211_queue_work(&local->hw,
1115 &ifmgd->csa_connection_drop_work);
1116 if (res)
1117 return;
1118
1119 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
1120 IEEE80211_CHAN_DISABLED)) {
1121 sdata_info(sdata,
1122 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
1123 ifmgd->associated->bssid,
1124 csa_ie.chandef.chan->center_freq,
1125 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1126 csa_ie.chandef.center_freq2);
1127 ieee80211_queue_work(&local->hw,
1128 &ifmgd->csa_connection_drop_work);
1129 return;
1130 }
1131
1132 if (cfg80211_chandef_identical(&csa_ie.chandef,
1133 &sdata->vif.bss_conf.chandef)) {
1134 if (ifmgd->csa_ignored_same_chan)
1135 return;
1136 sdata_info(sdata,
1137 "AP %pM tries to chanswitch to same channel, ignore\n",
1138 ifmgd->associated->bssid);
1139 ifmgd->csa_ignored_same_chan = true;
1140 return;
1141 }
1142
1143
1144
1145
1146
1147
1148
1149 ieee80211_teardown_tdls_peers(sdata);
1150
1151 mutex_lock(&local->mtx);
1152 mutex_lock(&local->chanctx_mtx);
1153 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1154 lockdep_is_held(&local->chanctx_mtx));
1155 if (!conf) {
1156 sdata_info(sdata,
1157 "no channel context assigned to vif?, disconnecting\n");
1158 goto drop_connection;
1159 }
1160
1161 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1162
1163 if (local->use_chanctx &&
1164 !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) {
1165 sdata_info(sdata,
1166 "driver doesn't support chan-switch with channel contexts\n");
1167 goto drop_connection;
1168 }
1169
1170 ch_switch.timestamp = timestamp;
1171 ch_switch.device_timestamp = device_timestamp;
1172 ch_switch.block_tx = csa_ie.mode;
1173 ch_switch.chandef = csa_ie.chandef;
1174 ch_switch.count = csa_ie.count;
1175
1176 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1177 sdata_info(sdata,
1178 "preparing for channel switch failed, disconnecting\n");
1179 goto drop_connection;
1180 }
1181
1182 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1183 chanctx->mode, false);
1184 if (res) {
1185 sdata_info(sdata,
1186 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1187 res);
1188 goto drop_connection;
1189 }
1190 mutex_unlock(&local->chanctx_mtx);
1191
1192 sdata->vif.csa_active = true;
1193 sdata->csa_chandef = csa_ie.chandef;
1194 sdata->csa_block_tx = csa_ie.mode;
1195 ifmgd->csa_ignored_same_chan = false;
1196
1197 if (sdata->csa_block_tx)
1198 ieee80211_stop_vif_queues(local, sdata,
1199 IEEE80211_QUEUE_STOP_REASON_CSA);
1200 mutex_unlock(&local->mtx);
1201
1202 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1203 csa_ie.count);
1204
1205 if (local->ops->channel_switch) {
1206
1207 drv_channel_switch(local, sdata, &ch_switch);
1208 return;
1209 }
1210
1211
1212 if (csa_ie.count <= 1)
1213 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
1214 else
1215 mod_timer(&ifmgd->chswitch_timer,
1216 TU_TO_EXP_TIME((csa_ie.count - 1) *
1217 cbss->beacon_interval));
1218 return;
1219 drop_connection:
1220 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
1221 mutex_unlock(&local->chanctx_mtx);
1222 mutex_unlock(&local->mtx);
1223}
1224
1225static bool
1226ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1227 struct ieee80211_channel *channel,
1228 const u8 *country_ie, u8 country_ie_len,
1229 const u8 *pwr_constr_elem,
1230 int *chan_pwr, int *pwr_reduction)
1231{
1232 struct ieee80211_country_ie_triplet *triplet;
1233 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1234 int i, chan_increment;
1235 bool have_chan_pwr = false;
1236
1237
1238 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1239 return false;
1240
1241 triplet = (void *)(country_ie + 3);
1242 country_ie_len -= 3;
1243
1244 switch (channel->band) {
1245 default:
1246 WARN_ON_ONCE(1);
1247
1248 case NL80211_BAND_2GHZ:
1249 case NL80211_BAND_60GHZ:
1250 chan_increment = 1;
1251 break;
1252 case NL80211_BAND_5GHZ:
1253 chan_increment = 4;
1254 break;
1255 }
1256
1257
1258 while (country_ie_len >= 3) {
1259 u8 first_channel = triplet->chans.first_channel;
1260
1261 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1262 goto next;
1263
1264 for (i = 0; i < triplet->chans.num_channels; i++) {
1265 if (first_channel + i * chan_increment == chan) {
1266 have_chan_pwr = true;
1267 *chan_pwr = triplet->chans.max_power;
1268 break;
1269 }
1270 }
1271 if (have_chan_pwr)
1272 break;
1273
1274 next:
1275 triplet++;
1276 country_ie_len -= 3;
1277 }
1278
1279 if (have_chan_pwr && pwr_constr_elem)
1280 *pwr_reduction = *pwr_constr_elem;
1281 else
1282 *pwr_reduction = 0;
1283
1284 return have_chan_pwr;
1285}
1286
1287static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1288 struct ieee80211_channel *channel,
1289 const u8 *cisco_dtpc_ie,
1290 int *pwr_level)
1291{
1292
1293
1294
1295
1296
1297
1298 *pwr_level = (__s8)cisco_dtpc_ie[4];
1299}
1300
1301static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1302 struct ieee80211_channel *channel,
1303 struct ieee80211_mgmt *mgmt,
1304 const u8 *country_ie, u8 country_ie_len,
1305 const u8 *pwr_constr_ie,
1306 const u8 *cisco_dtpc_ie)
1307{
1308 bool has_80211h_pwr = false, has_cisco_pwr = false;
1309 int chan_pwr = 0, pwr_reduction_80211h = 0;
1310 int pwr_level_cisco, pwr_level_80211h;
1311 int new_ap_level;
1312 __le16 capab = mgmt->u.probe_resp.capab_info;
1313
1314 if (country_ie &&
1315 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1316 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
1317 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1318 sdata, channel, country_ie, country_ie_len,
1319 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
1320 pwr_level_80211h =
1321 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1322 }
1323
1324 if (cisco_dtpc_ie) {
1325 ieee80211_find_cisco_dtpc(
1326 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1327 has_cisco_pwr = true;
1328 }
1329
1330 if (!has_80211h_pwr && !has_cisco_pwr)
1331 return 0;
1332
1333
1334
1335
1336 if (has_80211h_pwr &&
1337 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
1338 new_ap_level = pwr_level_80211h;
1339
1340 if (sdata->ap_power_level == new_ap_level)
1341 return 0;
1342
1343 sdata_dbg(sdata,
1344 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1345 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1346 sdata->u.mgd.bssid);
1347 } else {
1348 new_ap_level = pwr_level_cisco;
1349
1350 if (sdata->ap_power_level == new_ap_level)
1351 return 0;
1352
1353 sdata_dbg(sdata,
1354 "Limiting TX power to %d dBm as advertised by %pM\n",
1355 pwr_level_cisco, sdata->u.mgd.bssid);
1356 }
1357
1358 sdata->ap_power_level = new_ap_level;
1359 if (__ieee80211_recalc_txpower(sdata))
1360 return BSS_CHANGED_TXPOWER;
1361 return 0;
1362}
1363
1364
1365static void ieee80211_enable_ps(struct ieee80211_local *local,
1366 struct ieee80211_sub_if_data *sdata)
1367{
1368 struct ieee80211_conf *conf = &local->hw.conf;
1369
1370
1371
1372
1373
1374 if (local->scanning)
1375 return;
1376
1377 if (conf->dynamic_ps_timeout > 0 &&
1378 !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
1379 mod_timer(&local->dynamic_ps_timer, jiffies +
1380 msecs_to_jiffies(conf->dynamic_ps_timeout));
1381 } else {
1382 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
1383 ieee80211_send_nullfunc(local, sdata, true);
1384
1385 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1386 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1387 return;
1388
1389 conf->flags |= IEEE80211_CONF_PS;
1390 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1391 }
1392}
1393
1394static void ieee80211_change_ps(struct ieee80211_local *local)
1395{
1396 struct ieee80211_conf *conf = &local->hw.conf;
1397
1398 if (local->ps_sdata) {
1399 ieee80211_enable_ps(local, local->ps_sdata);
1400 } else if (conf->flags & IEEE80211_CONF_PS) {
1401 conf->flags &= ~IEEE80211_CONF_PS;
1402 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1403 del_timer_sync(&local->dynamic_ps_timer);
1404 cancel_work_sync(&local->dynamic_ps_enable_work);
1405 }
1406}
1407
1408static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1409{
1410 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1411 struct sta_info *sta = NULL;
1412 bool authorized = false;
1413
1414 if (!mgd->powersave)
1415 return false;
1416
1417 if (mgd->broken_ap)
1418 return false;
1419
1420 if (!mgd->associated)
1421 return false;
1422
1423 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
1424 return false;
1425
1426 if (!mgd->have_beacon)
1427 return false;
1428
1429 rcu_read_lock();
1430 sta = sta_info_get(sdata, mgd->bssid);
1431 if (sta)
1432 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
1433 rcu_read_unlock();
1434
1435 return authorized;
1436}
1437
1438
1439void ieee80211_recalc_ps(struct ieee80211_local *local)
1440{
1441 struct ieee80211_sub_if_data *sdata, *found = NULL;
1442 int count = 0;
1443 int timeout;
1444
1445 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) {
1446 local->ps_sdata = NULL;
1447 return;
1448 }
1449
1450 list_for_each_entry(sdata, &local->interfaces, list) {
1451 if (!ieee80211_sdata_running(sdata))
1452 continue;
1453 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1454
1455
1456
1457
1458 count = 0;
1459 break;
1460 }
1461 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1462 continue;
1463 found = sdata;
1464 count++;
1465 }
1466
1467 if (count == 1 && ieee80211_powersave_allowed(found)) {
1468 u8 dtimper = found->u.mgd.dtim_period;
1469
1470 timeout = local->dynamic_ps_forced_timeout;
1471 if (timeout < 0)
1472 timeout = 100;
1473 local->hw.conf.dynamic_ps_timeout = timeout;
1474
1475
1476 if (!dtimper)
1477 dtimper = 1;
1478
1479 local->hw.conf.ps_dtim_period = dtimper;
1480 local->ps_sdata = found;
1481 } else {
1482 local->ps_sdata = NULL;
1483 }
1484
1485 ieee80211_change_ps(local);
1486}
1487
1488void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1489{
1490 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1491
1492 if (sdata->vif.bss_conf.ps != ps_allowed) {
1493 sdata->vif.bss_conf.ps = ps_allowed;
1494 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1495 }
1496}
1497
1498void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1499{
1500 struct ieee80211_local *local =
1501 container_of(work, struct ieee80211_local,
1502 dynamic_ps_disable_work);
1503
1504 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1505 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1506 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1507 }
1508
1509 ieee80211_wake_queues_by_reason(&local->hw,
1510 IEEE80211_MAX_QUEUE_MAP,
1511 IEEE80211_QUEUE_STOP_REASON_PS,
1512 false);
1513}
1514
1515void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1516{
1517 struct ieee80211_local *local =
1518 container_of(work, struct ieee80211_local,
1519 dynamic_ps_enable_work);
1520 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
1521 struct ieee80211_if_managed *ifmgd;
1522 unsigned long flags;
1523 int q;
1524
1525
1526 if (!sdata)
1527 return;
1528
1529 ifmgd = &sdata->u.mgd;
1530
1531 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1532 return;
1533
1534 if (local->hw.conf.dynamic_ps_timeout > 0) {
1535
1536 if (drv_tx_frames_pending(local)) {
1537 mod_timer(&local->dynamic_ps_timer, jiffies +
1538 msecs_to_jiffies(
1539 local->hw.conf.dynamic_ps_timeout));
1540 return;
1541 }
1542
1543
1544
1545
1546
1547
1548 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1549 for (q = 0; q < local->hw.queues; q++) {
1550 if (local->queue_stop_reasons[q]) {
1551 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1552 flags);
1553 mod_timer(&local->dynamic_ps_timer, jiffies +
1554 msecs_to_jiffies(
1555 local->hw.conf.dynamic_ps_timeout));
1556 return;
1557 }
1558 }
1559 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1560 }
1561
1562 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1563 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1564 if (drv_tx_frames_pending(local)) {
1565 mod_timer(&local->dynamic_ps_timer, jiffies +
1566 msecs_to_jiffies(
1567 local->hw.conf.dynamic_ps_timeout));
1568 } else {
1569 ieee80211_send_nullfunc(local, sdata, true);
1570
1571 ieee80211_flush_queues(local, sdata, false);
1572 }
1573 }
1574
1575 if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
1576 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) ||
1577 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1578 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1579 local->hw.conf.flags |= IEEE80211_CONF_PS;
1580 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1581 }
1582}
1583
1584void ieee80211_dynamic_ps_timer(struct timer_list *t)
1585{
1586 struct ieee80211_local *local = from_timer(local, t, dynamic_ps_timer);
1587
1588 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
1589}
1590
1591void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1592{
1593 struct delayed_work *delayed_work = to_delayed_work(work);
1594 struct ieee80211_sub_if_data *sdata =
1595 container_of(delayed_work, struct ieee80211_sub_if_data,
1596 dfs_cac_timer_work);
1597 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
1598
1599 mutex_lock(&sdata->local->mtx);
1600 if (sdata->wdev.cac_started) {
1601 ieee80211_vif_release_channel(sdata);
1602 cfg80211_cac_event(sdata->dev, &chandef,
1603 NL80211_RADAR_CAC_FINISHED,
1604 GFP_KERNEL);
1605 }
1606 mutex_unlock(&sdata->local->mtx);
1607}
1608
1609static bool
1610__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1611{
1612 struct ieee80211_local *local = sdata->local;
1613 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1614 bool ret = false;
1615 int ac;
1616
1617 if (local->hw.queues < IEEE80211_NUM_ACS)
1618 return false;
1619
1620 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1621 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1622 int non_acm_ac;
1623 unsigned long now = jiffies;
1624
1625 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1626 tx_tspec->admitted_time &&
1627 time_after(now, tx_tspec->time_slice_start + HZ)) {
1628 tx_tspec->consumed_tx_time = 0;
1629 tx_tspec->time_slice_start = now;
1630
1631 if (tx_tspec->downgraded)
1632 tx_tspec->action =
1633 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1634 }
1635
1636 switch (tx_tspec->action) {
1637 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1638
1639 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1640 sdata_err(sdata,
1641 "failed to set TX queue parameters for queue %d\n",
1642 ac);
1643 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1644 tx_tspec->downgraded = false;
1645 ret = true;
1646 break;
1647 case TX_TSPEC_ACTION_DOWNGRADE:
1648 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1649 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1650 ret = true;
1651 break;
1652 }
1653
1654 for (non_acm_ac = ac + 1;
1655 non_acm_ac < IEEE80211_NUM_ACS;
1656 non_acm_ac++)
1657 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1658 break;
1659
1660
1661
1662
1663
1664
1665
1666 if (non_acm_ac >= IEEE80211_NUM_ACS)
1667 non_acm_ac = IEEE80211_AC_BK;
1668 if (drv_conf_tx(local, sdata, ac,
1669 &sdata->tx_conf[non_acm_ac]))
1670 sdata_err(sdata,
1671 "failed to set TX queue parameters for queue %d\n",
1672 ac);
1673 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1674 ret = true;
1675 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1676 tx_tspec->time_slice_start + HZ - now + 1);
1677 break;
1678 case TX_TSPEC_ACTION_NONE:
1679
1680 break;
1681 }
1682 }
1683
1684 return ret;
1685}
1686
1687void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1688{
1689 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1690 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1691}
1692
1693static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1694{
1695 struct ieee80211_sub_if_data *sdata;
1696
1697 sdata = container_of(work, struct ieee80211_sub_if_data,
1698 u.mgd.tx_tspec_wk.work);
1699 ieee80211_sta_handle_tspec_ac_params(sdata);
1700}
1701
1702
1703static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
1704 struct ieee80211_sub_if_data *sdata,
1705 const u8 *wmm_param, size_t wmm_param_len)
1706{
1707 struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
1708 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1709 size_t left;
1710 int count, ac;
1711 const u8 *pos;
1712 u8 uapsd_queues = 0;
1713
1714 if (!local->ops->conf_tx)
1715 return false;
1716
1717 if (local->hw.queues < IEEE80211_NUM_ACS)
1718 return false;
1719
1720 if (!wmm_param)
1721 return false;
1722
1723 if (wmm_param_len < 8 || wmm_param[5] != 1)
1724 return false;
1725
1726 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
1727 uapsd_queues = ifmgd->uapsd_queues;
1728
1729 count = wmm_param[6] & 0x0f;
1730 if (count == ifmgd->wmm_last_param_set)
1731 return false;
1732 ifmgd->wmm_last_param_set = count;
1733
1734 pos = wmm_param + 8;
1735 left = wmm_param_len - 8;
1736
1737 memset(¶ms, 0, sizeof(params));
1738
1739 sdata->wmm_acm = 0;
1740 for (; left >= 4; left -= 4, pos += 4) {
1741 int aci = (pos[0] >> 5) & 0x03;
1742 int acm = (pos[0] >> 4) & 0x01;
1743 bool uapsd = false;
1744
1745 switch (aci) {
1746 case 1:
1747 ac = IEEE80211_AC_BK;
1748 if (acm)
1749 sdata->wmm_acm |= BIT(1) | BIT(2);
1750 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1751 uapsd = true;
1752 break;
1753 case 2:
1754 ac = IEEE80211_AC_VI;
1755 if (acm)
1756 sdata->wmm_acm |= BIT(4) | BIT(5);
1757 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1758 uapsd = true;
1759 break;
1760 case 3:
1761 ac = IEEE80211_AC_VO;
1762 if (acm)
1763 sdata->wmm_acm |= BIT(6) | BIT(7);
1764 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1765 uapsd = true;
1766 break;
1767 case 0:
1768 default:
1769 ac = IEEE80211_AC_BE;
1770 if (acm)
1771 sdata->wmm_acm |= BIT(0) | BIT(3);
1772 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1773 uapsd = true;
1774 break;
1775 }
1776
1777 params[ac].aifs = pos[0] & 0x0f;
1778
1779 if (params[ac].aifs < 2) {
1780 sdata_info(sdata,
1781 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
1782 params[ac].aifs, aci);
1783 params[ac].aifs = 2;
1784 }
1785 params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1786 params[ac].cw_min = ecw2cw(pos[1] & 0x0f);
1787 params[ac].txop = get_unaligned_le16(pos + 2);
1788 params[ac].acm = acm;
1789 params[ac].uapsd = uapsd;
1790
1791 if (params[ac].cw_min == 0 ||
1792 params[ac].cw_min > params[ac].cw_max) {
1793 sdata_info(sdata,
1794 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
1795 params[ac].cw_min, params[ac].cw_max, aci);
1796 return false;
1797 }
1798 ieee80211_regulatory_limit_wmm_params(sdata, ¶ms[ac], ac);
1799 }
1800
1801 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1802 mlme_dbg(sdata,
1803 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
1804 ac, params[ac].acm,
1805 params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
1806 params[ac].txop, params[ac].uapsd,
1807 ifmgd->tx_tspec[ac].downgraded);
1808 sdata->tx_conf[ac] = params[ac];
1809 if (!ifmgd->tx_tspec[ac].downgraded &&
1810 drv_conf_tx(local, sdata, ac, ¶ms[ac]))
1811 sdata_err(sdata,
1812 "failed to set TX queue parameters for AC %d\n",
1813 ac);
1814 }
1815
1816
1817 sdata->vif.bss_conf.qos = true;
1818 return true;
1819}
1820
1821static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1822{
1823 lockdep_assert_held(&sdata->local->mtx);
1824
1825 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
1826 ieee80211_run_deferred_scan(sdata->local);
1827}
1828
1829static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1830{
1831 mutex_lock(&sdata->local->mtx);
1832 __ieee80211_stop_poll(sdata);
1833 mutex_unlock(&sdata->local->mtx);
1834}
1835
1836static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1837 u16 capab, bool erp_valid, u8 erp)
1838{
1839 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
1840 struct ieee80211_supported_band *sband;
1841 u32 changed = 0;
1842 bool use_protection;
1843 bool use_short_preamble;
1844 bool use_short_slot;
1845
1846 sband = ieee80211_get_sband(sdata);
1847 if (!sband)
1848 return changed;
1849
1850 if (erp_valid) {
1851 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1852 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1853 } else {
1854 use_protection = false;
1855 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1856 }
1857
1858 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
1859 if (sband->band == NL80211_BAND_5GHZ)
1860 use_short_slot = true;
1861
1862 if (use_protection != bss_conf->use_cts_prot) {
1863 bss_conf->use_cts_prot = use_protection;
1864 changed |= BSS_CHANGED_ERP_CTS_PROT;
1865 }
1866
1867 if (use_short_preamble != bss_conf->use_short_preamble) {
1868 bss_conf->use_short_preamble = use_short_preamble;
1869 changed |= BSS_CHANGED_ERP_PREAMBLE;
1870 }
1871
1872 if (use_short_slot != bss_conf->use_short_slot) {
1873 bss_conf->use_short_slot = use_short_slot;
1874 changed |= BSS_CHANGED_ERP_SLOT;
1875 }
1876
1877 return changed;
1878}
1879
1880static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
1881 struct cfg80211_bss *cbss,
1882 u32 bss_info_changed)
1883{
1884 struct ieee80211_bss *bss = (void *)cbss->priv;
1885 struct ieee80211_local *local = sdata->local;
1886 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
1887
1888 bss_info_changed |= BSS_CHANGED_ASSOC;
1889 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
1890 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
1891
1892 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
1893 beacon_loss_count * bss_conf->beacon_int));
1894
1895 sdata->u.mgd.associated = cbss;
1896 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
1897
1898 ieee80211_check_rate_mask(sdata);
1899
1900 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1901
1902 if (sdata->vif.p2p ||
1903 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
1904 const struct cfg80211_bss_ies *ies;
1905
1906 rcu_read_lock();
1907 ies = rcu_dereference(cbss->ies);
1908 if (ies) {
1909 int ret;
1910
1911 ret = cfg80211_get_p2p_attr(
1912 ies->data, ies->len,
1913 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
1914 (u8 *) &bss_conf->p2p_noa_attr,
1915 sizeof(bss_conf->p2p_noa_attr));
1916 if (ret >= 2) {
1917 sdata->u.mgd.p2p_noa_index =
1918 bss_conf->p2p_noa_attr.index;
1919 bss_info_changed |= BSS_CHANGED_P2P_PS;
1920 }
1921 }
1922 rcu_read_unlock();
1923 }
1924
1925
1926 ieee80211_stop_poll(sdata);
1927
1928 ieee80211_led_assoc(local, 1);
1929
1930 if (sdata->u.mgd.have_beacon) {
1931
1932
1933
1934
1935
1936
1937 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
1938 bss_conf->beacon_rate = bss->beacon_rate;
1939 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
1940 } else {
1941 bss_conf->beacon_rate = NULL;
1942 bss_conf->dtim_period = 0;
1943 }
1944
1945 bss_conf->assoc = 1;
1946
1947
1948 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
1949 bss_conf->cqm_rssi_thold)
1950 bss_info_changed |= BSS_CHANGED_CQM;
1951
1952
1953 if (bss_conf->arp_addr_cnt)
1954 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
1955
1956 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
1957
1958 mutex_lock(&local->iflist_mtx);
1959 ieee80211_recalc_ps(local);
1960 mutex_unlock(&local->iflist_mtx);
1961
1962 ieee80211_recalc_smps(sdata);
1963 ieee80211_recalc_ps_vif(sdata);
1964
1965 netif_carrier_on(sdata->dev);
1966}
1967
1968static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
1969 u16 stype, u16 reason, bool tx,
1970 u8 *frame_buf)
1971{
1972 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1973 struct ieee80211_local *local = sdata->local;
1974 u32 changed = 0;
1975
1976 sdata_assert_lock(sdata);
1977
1978 if (WARN_ON_ONCE(tx && !frame_buf))
1979 return;
1980
1981 if (WARN_ON(!ifmgd->associated))
1982 return;
1983
1984 ieee80211_stop_poll(sdata);
1985
1986 ifmgd->associated = NULL;
1987 netif_carrier_off(sdata->dev);
1988
1989
1990
1991
1992
1993
1994 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1995 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1996 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1997 }
1998 local->ps_sdata = NULL;
1999
2000
2001 ieee80211_recalc_ps_vif(sdata);
2002
2003
2004 synchronize_net();
2005
2006
2007
2008
2009
2010
2011
2012 if (tx)
2013 ieee80211_flush_queues(local, sdata, true);
2014
2015
2016 if (tx || frame_buf) {
2017
2018
2019
2020
2021
2022
2023 if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP) &&
2024 !ifmgd->have_beacon)
2025 drv_mgd_prepare_tx(sdata->local, sdata);
2026
2027 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
2028 reason, tx, frame_buf);
2029 }
2030
2031
2032 if (tx)
2033 ieee80211_flush_queues(local, sdata, false);
2034
2035
2036 eth_zero_addr(ifmgd->bssid);
2037
2038
2039 sta_info_flush(sdata);
2040
2041
2042 changed |= ieee80211_reset_erp_info(sdata);
2043
2044 ieee80211_led_assoc(local, 0);
2045 changed |= BSS_CHANGED_ASSOC;
2046 sdata->vif.bss_conf.assoc = false;
2047
2048 ifmgd->p2p_noa_index = -1;
2049 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2050 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
2051
2052
2053 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2054 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
2055 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2056 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
2057
2058
2059 memset(sdata->vif.bss_conf.mu_group.membership, 0,
2060 sizeof(sdata->vif.bss_conf.mu_group.membership));
2061 memset(sdata->vif.bss_conf.mu_group.position, 0,
2062 sizeof(sdata->vif.bss_conf.mu_group.position));
2063 changed |= BSS_CHANGED_MU_GROUPS;
2064 sdata->vif.mu_mimo_owner = false;
2065
2066 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
2067
2068 del_timer_sync(&local->dynamic_ps_timer);
2069 cancel_work_sync(&local->dynamic_ps_enable_work);
2070
2071
2072 if (sdata->vif.bss_conf.arp_addr_cnt)
2073 changed |= BSS_CHANGED_ARP_FILTER;
2074
2075 sdata->vif.bss_conf.qos = false;
2076 changed |= BSS_CHANGED_QOS;
2077
2078
2079 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
2080 ieee80211_bss_info_change_notify(sdata, changed);
2081
2082
2083 ieee80211_set_wmm_default(sdata, false, false);
2084
2085 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2086 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2087 del_timer_sync(&sdata->u.mgd.timer);
2088 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2089
2090 sdata->vif.bss_conf.dtim_period = 0;
2091 sdata->vif.bss_conf.beacon_rate = NULL;
2092
2093 ifmgd->have_beacon = false;
2094
2095 ifmgd->flags = 0;
2096 mutex_lock(&local->mtx);
2097 ieee80211_vif_release_channel(sdata);
2098
2099 sdata->vif.csa_active = false;
2100 ifmgd->csa_waiting_bcn = false;
2101 ifmgd->csa_ignored_same_chan = false;
2102 if (sdata->csa_block_tx) {
2103 ieee80211_wake_vif_queues(local, sdata,
2104 IEEE80211_QUEUE_STOP_REASON_CSA);
2105 sdata->csa_block_tx = false;
2106 }
2107 mutex_unlock(&local->mtx);
2108
2109
2110 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2111 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2112
2113 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
2114}
2115
2116void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2117 struct ieee80211_hdr *hdr)
2118{
2119
2120
2121
2122
2123
2124
2125
2126
2127 if (is_multicast_ether_addr(hdr->addr1))
2128 return;
2129
2130 ieee80211_sta_reset_conn_monitor(sdata);
2131}
2132
2133static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2134{
2135 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2136 struct ieee80211_local *local = sdata->local;
2137
2138 mutex_lock(&local->mtx);
2139 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2140 goto out;
2141
2142 __ieee80211_stop_poll(sdata);
2143
2144 mutex_lock(&local->iflist_mtx);
2145 ieee80211_recalc_ps(local);
2146 mutex_unlock(&local->iflist_mtx);
2147
2148 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
2149 goto out;
2150
2151
2152
2153
2154
2155
2156 ieee80211_sta_reset_beacon_monitor(sdata);
2157
2158 mod_timer(&ifmgd->conn_mon_timer,
2159 round_jiffies_up(jiffies +
2160 IEEE80211_CONNECTION_IDLE_TIME));
2161out:
2162 mutex_unlock(&local->mtx);
2163}
2164
2165static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2166 struct ieee80211_hdr *hdr,
2167 u16 tx_time)
2168{
2169 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2170 u16 tid = ieee80211_get_tid(hdr);
2171 int ac = ieee80211_ac_from_tid(tid);
2172 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
2173 unsigned long now = jiffies;
2174
2175 if (likely(!tx_tspec->admitted_time))
2176 return;
2177
2178 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2179 tx_tspec->consumed_tx_time = 0;
2180 tx_tspec->time_slice_start = now;
2181
2182 if (tx_tspec->downgraded) {
2183 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2184 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2185 }
2186 }
2187
2188 if (tx_tspec->downgraded)
2189 return;
2190
2191 tx_tspec->consumed_tx_time += tx_time;
2192
2193 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2194 tx_tspec->downgraded = true;
2195 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2196 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2197 }
2198}
2199
2200void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2201 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
2202{
2203 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2204
2205 if (!ieee80211_is_data(hdr->frame_control))
2206 return;
2207
2208 if (ieee80211_is_nullfunc(hdr->frame_control) &&
2209 sdata->u.mgd.probe_send_count > 0) {
2210 if (ack)
2211 ieee80211_sta_reset_conn_monitor(sdata);
2212 else
2213 sdata->u.mgd.nullfunc_failed = true;
2214 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
2215 return;
2216 }
2217
2218 if (ack)
2219 ieee80211_sta_reset_conn_monitor(sdata);
2220}
2221
2222static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2223{
2224 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2225 const u8 *ssid;
2226 u8 *dst = ifmgd->associated->bssid;
2227 u8 unicast_limit = max(1, max_probe_tries - 3);
2228 struct sta_info *sta;
2229
2230
2231
2232
2233
2234
2235 if (ifmgd->probe_send_count >= unicast_limit)
2236 dst = NULL;
2237
2238
2239
2240
2241
2242
2243
2244
2245 ifmgd->probe_send_count++;
2246
2247 if (dst) {
2248 mutex_lock(&sdata->local->sta_mtx);
2249 sta = sta_info_get(sdata, dst);
2250 if (!WARN_ON(!sta))
2251 ieee80211_check_fast_rx(sta);
2252 mutex_unlock(&sdata->local->sta_mtx);
2253 }
2254
2255 if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
2256 ifmgd->nullfunc_failed = false;
2257 ieee80211_send_nullfunc(sdata->local, sdata, false);
2258 } else {
2259 int ssid_len;
2260
2261 rcu_read_lock();
2262 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
2263 if (WARN_ON_ONCE(ssid == NULL))
2264 ssid_len = 0;
2265 else
2266 ssid_len = ssid[1];
2267
2268 ieee80211_send_probe_req(sdata, sdata->vif.addr, dst,
2269 ssid + 2, ssid_len, NULL,
2270 0, (u32) -1, true, 0,
2271 ifmgd->associated->channel, false);
2272 rcu_read_unlock();
2273 }
2274
2275 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
2276 run_again(sdata, ifmgd->probe_timeout);
2277}
2278
2279static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2280 bool beacon)
2281{
2282 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2283 bool already = false;
2284
2285 if (!ieee80211_sdata_running(sdata))
2286 return;
2287
2288 sdata_lock(sdata);
2289
2290 if (!ifmgd->associated)
2291 goto out;
2292
2293 mutex_lock(&sdata->local->mtx);
2294
2295 if (sdata->local->tmp_channel || sdata->local->scanning) {
2296 mutex_unlock(&sdata->local->mtx);
2297 goto out;
2298 }
2299
2300 if (beacon) {
2301 mlme_dbg_ratelimited(sdata,
2302 "detected beacon loss from AP (missed %d beacons) - probing\n",
2303 beacon_loss_count);
2304
2305 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
2306 }
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
2320 already = true;
2321
2322 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2323
2324 mutex_unlock(&sdata->local->mtx);
2325
2326 if (already)
2327 goto out;
2328
2329 mutex_lock(&sdata->local->iflist_mtx);
2330 ieee80211_recalc_ps(sdata->local);
2331 mutex_unlock(&sdata->local->iflist_mtx);
2332
2333 ifmgd->probe_send_count = 0;
2334 ieee80211_mgd_probe_ap_send(sdata);
2335 out:
2336 sdata_unlock(sdata);
2337}
2338
2339struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2340 struct ieee80211_vif *vif)
2341{
2342 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2343 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2344 struct cfg80211_bss *cbss;
2345 struct sk_buff *skb;
2346 const u8 *ssid;
2347 int ssid_len;
2348
2349 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2350 return NULL;
2351
2352 sdata_assert_lock(sdata);
2353
2354 if (ifmgd->associated)
2355 cbss = ifmgd->associated;
2356 else if (ifmgd->auth_data)
2357 cbss = ifmgd->auth_data->bss;
2358 else if (ifmgd->assoc_data)
2359 cbss = ifmgd->assoc_data->bss;
2360 else
2361 return NULL;
2362
2363 rcu_read_lock();
2364 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
2365 if (WARN_ON_ONCE(ssid == NULL))
2366 ssid_len = 0;
2367 else
2368 ssid_len = ssid[1];
2369
2370 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
2371 (u32) -1, cbss->channel,
2372 ssid + 2, ssid_len,
2373 NULL, 0, true);
2374 rcu_read_unlock();
2375
2376 return skb;
2377}
2378EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2379
2380static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
2381 const u8 *buf, size_t len, bool tx,
2382 u16 reason)
2383{
2384 struct ieee80211_event event = {
2385 .type = MLME_EVENT,
2386 .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
2387 .u.mlme.reason = reason,
2388 };
2389
2390 if (tx)
2391 cfg80211_tx_mlme_mgmt(sdata->dev, buf, len);
2392 else
2393 cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
2394
2395 drv_event_callback(sdata->local, sdata, &event);
2396}
2397
2398static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
2399{
2400 struct ieee80211_local *local = sdata->local;
2401 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2402 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
2403
2404 sdata_lock(sdata);
2405 if (!ifmgd->associated) {
2406 sdata_unlock(sdata);
2407 return;
2408 }
2409
2410
2411
2412
2413 cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated);
2414
2415 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2416 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
2417 true, frame_buf);
2418 mutex_lock(&local->mtx);
2419 sdata->vif.csa_active = false;
2420 ifmgd->csa_waiting_bcn = false;
2421 if (sdata->csa_block_tx) {
2422 ieee80211_wake_vif_queues(local, sdata,
2423 IEEE80211_QUEUE_STOP_REASON_CSA);
2424 sdata->csa_block_tx = false;
2425 }
2426 mutex_unlock(&local->mtx);
2427
2428 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
2429 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
2430
2431 sdata_unlock(sdata);
2432}
2433
2434static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
2435{
2436 struct ieee80211_sub_if_data *sdata =
2437 container_of(work, struct ieee80211_sub_if_data,
2438 u.mgd.beacon_connection_loss_work);
2439 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2440
2441 if (ifmgd->associated)
2442 ifmgd->beacon_loss_count++;
2443
2444 if (ifmgd->connection_loss) {
2445 sdata_info(sdata, "Connection to AP %pM lost\n",
2446 ifmgd->bssid);
2447 __ieee80211_disconnect(sdata);
2448 } else {
2449 ieee80211_mgd_probe_ap(sdata, true);
2450 }
2451}
2452
2453static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2454{
2455 struct ieee80211_sub_if_data *sdata =
2456 container_of(work, struct ieee80211_sub_if_data,
2457 u.mgd.csa_connection_drop_work);
2458
2459 __ieee80211_disconnect(sdata);
2460}
2461
2462void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2463{
2464 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2465 struct ieee80211_hw *hw = &sdata->local->hw;
2466
2467 trace_api_beacon_loss(sdata);
2468
2469 sdata->u.mgd.connection_loss = false;
2470 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2471}
2472EXPORT_SYMBOL(ieee80211_beacon_loss);
2473
2474void ieee80211_connection_loss(struct ieee80211_vif *vif)
2475{
2476 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2477 struct ieee80211_hw *hw = &sdata->local->hw;
2478
2479 trace_api_connection_loss(sdata);
2480
2481 sdata->u.mgd.connection_loss = true;
2482 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2483}
2484EXPORT_SYMBOL(ieee80211_connection_loss);
2485
2486
2487static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2488 bool assoc)
2489{
2490 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2491
2492 sdata_assert_lock(sdata);
2493
2494 if (!assoc) {
2495
2496
2497
2498
2499
2500 del_timer_sync(&sdata->u.mgd.timer);
2501 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2502
2503 eth_zero_addr(sdata->u.mgd.bssid);
2504 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2505 sdata->u.mgd.flags = 0;
2506 mutex_lock(&sdata->local->mtx);
2507 ieee80211_vif_release_channel(sdata);
2508 mutex_unlock(&sdata->local->mtx);
2509 }
2510
2511 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
2512 kfree(auth_data);
2513 sdata->u.mgd.auth_data = NULL;
2514}
2515
2516static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2517 bool assoc, bool abandon)
2518{
2519 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2520
2521 sdata_assert_lock(sdata);
2522
2523 if (!assoc) {
2524
2525
2526
2527
2528
2529 del_timer_sync(&sdata->u.mgd.timer);
2530 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2531
2532 eth_zero_addr(sdata->u.mgd.bssid);
2533 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2534 sdata->u.mgd.flags = 0;
2535 sdata->vif.mu_mimo_owner = false;
2536
2537 mutex_lock(&sdata->local->mtx);
2538 ieee80211_vif_release_channel(sdata);
2539 mutex_unlock(&sdata->local->mtx);
2540
2541 if (abandon)
2542 cfg80211_abandon_assoc(sdata->dev, assoc_data->bss);
2543 }
2544
2545 kfree(assoc_data);
2546 sdata->u.mgd.assoc_data = NULL;
2547}
2548
2549static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2550 struct ieee80211_mgmt *mgmt, size_t len)
2551{
2552 struct ieee80211_local *local = sdata->local;
2553 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2554 u8 *pos;
2555 struct ieee802_11_elems elems;
2556 u32 tx_flags = 0;
2557
2558 pos = mgmt->u.auth.variable;
2559 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
2560 if (!elems.challenge)
2561 return;
2562 auth_data->expected_transaction = 4;
2563 drv_mgd_prepare_tx(sdata->local, sdata);
2564 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
2565 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2566 IEEE80211_TX_INTFL_MLME_CONN_TX;
2567 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
2568 elems.challenge - 2, elems.challenge_len + 2,
2569 auth_data->bss->bssid, auth_data->bss->bssid,
2570 auth_data->key, auth_data->key_len,
2571 auth_data->key_idx, tx_flags);
2572}
2573
2574static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2575 struct ieee80211_mgmt *mgmt, size_t len)
2576{
2577 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2578 u8 bssid[ETH_ALEN];
2579 u16 auth_alg, auth_transaction, status_code;
2580 struct sta_info *sta;
2581 struct ieee80211_event event = {
2582 .type = MLME_EVENT,
2583 .u.mlme.data = AUTH_EVENT,
2584 };
2585
2586 sdata_assert_lock(sdata);
2587
2588 if (len < 24 + 6)
2589 return;
2590
2591 if (!ifmgd->auth_data || ifmgd->auth_data->done)
2592 return;
2593
2594 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2595
2596 if (!ether_addr_equal(bssid, mgmt->bssid))
2597 return;
2598
2599 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2600 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2601 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2602
2603 if (auth_alg != ifmgd->auth_data->algorithm ||
2604 auth_transaction != ifmgd->auth_data->expected_transaction) {
2605 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2606 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2607 auth_transaction,
2608 ifmgd->auth_data->expected_transaction);
2609 return;
2610 }
2611
2612 if (status_code != WLAN_STATUS_SUCCESS) {
2613 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2614 mgmt->sa, status_code);
2615 ieee80211_destroy_auth_data(sdata, false);
2616 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2617 event.u.mlme.status = MLME_DENIED;
2618 event.u.mlme.reason = status_code;
2619 drv_event_callback(sdata->local, sdata, &event);
2620 return;
2621 }
2622
2623 switch (ifmgd->auth_data->algorithm) {
2624 case WLAN_AUTH_OPEN:
2625 case WLAN_AUTH_LEAP:
2626 case WLAN_AUTH_FT:
2627 case WLAN_AUTH_SAE:
2628 case WLAN_AUTH_FILS_SK:
2629 case WLAN_AUTH_FILS_SK_PFS:
2630 case WLAN_AUTH_FILS_PK:
2631 break;
2632 case WLAN_AUTH_SHARED_KEY:
2633 if (ifmgd->auth_data->expected_transaction != 4) {
2634 ieee80211_auth_challenge(sdata, mgmt, len);
2635
2636 return;
2637 }
2638 break;
2639 default:
2640 WARN_ONCE(1, "invalid auth alg %d",
2641 ifmgd->auth_data->algorithm);
2642 return;
2643 }
2644
2645 event.u.mlme.status = MLME_SUCCESS;
2646 drv_event_callback(sdata->local, sdata, &event);
2647 sdata_info(sdata, "authenticated\n");
2648 ifmgd->auth_data->done = true;
2649 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
2650 ifmgd->auth_data->timeout_started = true;
2651 run_again(sdata, ifmgd->auth_data->timeout);
2652
2653 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2654 ifmgd->auth_data->expected_transaction != 2) {
2655
2656
2657
2658
2659 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2660 return;
2661 }
2662
2663
2664 mutex_lock(&sdata->local->sta_mtx);
2665 sta = sta_info_get(sdata, bssid);
2666 if (!sta) {
2667 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2668 goto out_err;
2669 }
2670 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
2671 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
2672 goto out_err;
2673 }
2674 mutex_unlock(&sdata->local->sta_mtx);
2675
2676 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2677 return;
2678 out_err:
2679 mutex_unlock(&sdata->local->sta_mtx);
2680
2681}
2682
2683#define case_WLAN(type) \
2684 case WLAN_REASON_##type: return #type
2685
2686static const char *ieee80211_get_reason_code_string(u16 reason_code)
2687{
2688 switch (reason_code) {
2689 case_WLAN(UNSPECIFIED);
2690 case_WLAN(PREV_AUTH_NOT_VALID);
2691 case_WLAN(DEAUTH_LEAVING);
2692 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
2693 case_WLAN(DISASSOC_AP_BUSY);
2694 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
2695 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
2696 case_WLAN(DISASSOC_STA_HAS_LEFT);
2697 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
2698 case_WLAN(DISASSOC_BAD_POWER);
2699 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
2700 case_WLAN(INVALID_IE);
2701 case_WLAN(MIC_FAILURE);
2702 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
2703 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
2704 case_WLAN(IE_DIFFERENT);
2705 case_WLAN(INVALID_GROUP_CIPHER);
2706 case_WLAN(INVALID_PAIRWISE_CIPHER);
2707 case_WLAN(INVALID_AKMP);
2708 case_WLAN(UNSUPP_RSN_VERSION);
2709 case_WLAN(INVALID_RSN_IE_CAP);
2710 case_WLAN(IEEE8021X_FAILED);
2711 case_WLAN(CIPHER_SUITE_REJECTED);
2712 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
2713 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
2714 case_WLAN(DISASSOC_LOW_ACK);
2715 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
2716 case_WLAN(QSTA_LEAVE_QBSS);
2717 case_WLAN(QSTA_NOT_USE);
2718 case_WLAN(QSTA_REQUIRE_SETUP);
2719 case_WLAN(QSTA_TIMEOUT);
2720 case_WLAN(QSTA_CIPHER_NOT_SUPP);
2721 case_WLAN(MESH_PEER_CANCELED);
2722 case_WLAN(MESH_MAX_PEERS);
2723 case_WLAN(MESH_CONFIG);
2724 case_WLAN(MESH_CLOSE);
2725 case_WLAN(MESH_MAX_RETRIES);
2726 case_WLAN(MESH_CONFIRM_TIMEOUT);
2727 case_WLAN(MESH_INVALID_GTK);
2728 case_WLAN(MESH_INCONSISTENT_PARAM);
2729 case_WLAN(MESH_INVALID_SECURITY);
2730 case_WLAN(MESH_PATH_ERROR);
2731 case_WLAN(MESH_PATH_NOFORWARD);
2732 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
2733 case_WLAN(MAC_EXISTS_IN_MBSS);
2734 case_WLAN(MESH_CHAN_REGULATORY);
2735 case_WLAN(MESH_CHAN);
2736 default: return "<unknown>";
2737 }
2738}
2739
2740static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2741 struct ieee80211_mgmt *mgmt, size_t len)
2742{
2743 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2744 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2745
2746 sdata_assert_lock(sdata);
2747
2748 if (len < 24 + 2)
2749 return;
2750
2751 if (ifmgd->associated &&
2752 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) {
2753 const u8 *bssid = ifmgd->associated->bssid;
2754
2755 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
2756 bssid, reason_code,
2757 ieee80211_get_reason_code_string(reason_code));
2758
2759 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2760
2761 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
2762 reason_code);
2763 return;
2764 }
2765
2766 if (ifmgd->assoc_data &&
2767 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
2768 const u8 *bssid = ifmgd->assoc_data->bss->bssid;
2769
2770 sdata_info(sdata,
2771 "deauthenticated from %pM while associating (Reason: %u=%s)\n",
2772 bssid, reason_code,
2773 ieee80211_get_reason_code_string(reason_code));
2774
2775 ieee80211_destroy_assoc_data(sdata, false, true);
2776
2777 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2778 return;
2779 }
2780}
2781
2782
2783static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2784 struct ieee80211_mgmt *mgmt, size_t len)
2785{
2786 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2787 u16 reason_code;
2788
2789 sdata_assert_lock(sdata);
2790
2791 if (len < 24 + 2)
2792 return;
2793
2794 if (!ifmgd->associated ||
2795 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
2796 return;
2797
2798 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2799
2800 sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n",
2801 mgmt->sa, reason_code,
2802 ieee80211_get_reason_code_string(reason_code));
2803
2804 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2805
2806 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code);
2807}
2808
2809static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2810 u8 *supp_rates, unsigned int supp_rates_len,
2811 u32 *rates, u32 *basic_rates,
2812 bool *have_higher_than_11mbit,
2813 int *min_rate, int *min_rate_index,
2814 int shift)
2815{
2816 int i, j;
2817
2818 for (i = 0; i < supp_rates_len; i++) {
2819 int rate = supp_rates[i] & 0x7f;
2820 bool is_basic = !!(supp_rates[i] & 0x80);
2821
2822 if ((rate * 5 * (1 << shift)) > 110)
2823 *have_higher_than_11mbit = true;
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833 if (supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY) ||
2834 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY))
2835 continue;
2836
2837 for (j = 0; j < sband->n_bitrates; j++) {
2838 struct ieee80211_rate *br;
2839 int brate;
2840
2841 br = &sband->bitrates[j];
2842
2843 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2844 if (brate == rate) {
2845 *rates |= BIT(j);
2846 if (is_basic)
2847 *basic_rates |= BIT(j);
2848 if ((rate * 5) < *min_rate) {
2849 *min_rate = rate * 5;
2850 *min_rate_index = j;
2851 }
2852 break;
2853 }
2854 }
2855 }
2856}
2857
2858static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2859 struct cfg80211_bss *cbss,
2860 struct ieee80211_mgmt *mgmt, size_t len)
2861{
2862 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2863 struct ieee80211_local *local = sdata->local;
2864 struct ieee80211_supported_band *sband;
2865 struct sta_info *sta;
2866 u8 *pos;
2867 u16 capab_info, aid;
2868 struct ieee802_11_elems elems;
2869 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2870 const struct cfg80211_bss_ies *bss_ies = NULL;
2871 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
2872 u32 changed = 0;
2873 int err;
2874 bool ret;
2875
2876
2877
2878 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
2879 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
2880
2881
2882
2883
2884
2885 aid &= 0x7ff;
2886
2887 ifmgd->broken_ap = false;
2888
2889 if (aid == 0 || aid > IEEE80211_MAX_AID) {
2890 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2891 aid);
2892 aid = 0;
2893 ifmgd->broken_ap = true;
2894 }
2895
2896 pos = mgmt->u.assoc_resp.variable;
2897 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
2898
2899 if (!elems.supp_rates) {
2900 sdata_info(sdata, "no SuppRates element in AssocResp\n");
2901 return false;
2902 }
2903
2904 ifmgd->aid = aid;
2905 ifmgd->tdls_chan_switch_prohibited =
2906 elems.ext_capab && elems.ext_capab_len >= 5 &&
2907 (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
2908
2909
2910
2911
2912
2913
2914
2915
2916 if ((assoc_data->wmm && !elems.wmm_param) ||
2917 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2918 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2919 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2920 (!elems.vht_cap_elem || !elems.vht_operation))) {
2921 const struct cfg80211_bss_ies *ies;
2922 struct ieee802_11_elems bss_elems;
2923
2924 rcu_read_lock();
2925 ies = rcu_dereference(cbss->ies);
2926 if (ies)
2927 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2928 GFP_ATOMIC);
2929 rcu_read_unlock();
2930 if (!bss_ies)
2931 return false;
2932
2933 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2934 false, &bss_elems);
2935 if (assoc_data->wmm &&
2936 !elems.wmm_param && bss_elems.wmm_param) {
2937 elems.wmm_param = bss_elems.wmm_param;
2938 sdata_info(sdata,
2939 "AP bug: WMM param missing from AssocResp\n");
2940 }
2941
2942
2943
2944
2945
2946 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2947 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2948 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2949 sdata_info(sdata,
2950 "AP bug: HT capability missing from AssocResp\n");
2951 }
2952 if (!elems.ht_operation && bss_elems.ht_operation &&
2953 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2954 elems.ht_operation = bss_elems.ht_operation;
2955 sdata_info(sdata,
2956 "AP bug: HT operation missing from AssocResp\n");
2957 }
2958 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2959 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2960 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2961 sdata_info(sdata,
2962 "AP bug: VHT capa missing from AssocResp\n");
2963 }
2964 if (!elems.vht_operation && bss_elems.vht_operation &&
2965 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2966 elems.vht_operation = bss_elems.vht_operation;
2967 sdata_info(sdata,
2968 "AP bug: VHT operation missing from AssocResp\n");
2969 }
2970 }
2971
2972
2973
2974
2975
2976 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2977 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2978 sdata_info(sdata,
2979 "HT AP is missing WMM params or HT capability/operation\n");
2980 ret = false;
2981 goto out;
2982 }
2983
2984 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2985 (!elems.vht_cap_elem || !elems.vht_operation)) {
2986 sdata_info(sdata,
2987 "VHT AP is missing VHT capability/operation\n");
2988 ret = false;
2989 goto out;
2990 }
2991
2992 mutex_lock(&sdata->local->sta_mtx);
2993
2994
2995
2996
2997 sta = sta_info_get(sdata, cbss->bssid);
2998 if (WARN_ON(!sta)) {
2999 mutex_unlock(&sdata->local->sta_mtx);
3000 ret = false;
3001 goto out;
3002 }
3003
3004 sband = ieee80211_get_sband(sdata);
3005 if (!sband) {
3006 mutex_unlock(&sdata->local->sta_mtx);
3007 ret = false;
3008 goto out;
3009 }
3010
3011
3012 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
3013 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
3014 elems.ht_cap_elem, sta);
3015
3016 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
3017 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
3018 elems.vht_cap_elem, sta);
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032 if (elems.opmode_notif &&
3033 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
3034 u8 nss;
3035
3036 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
3037 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
3038 nss += 1;
3039 sta->sta.rx_nss = nss;
3040 }
3041
3042 rate_control_rate_init(sta);
3043
3044 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
3045 set_sta_flag(sta, WLAN_STA_MFP);
3046 sta->sta.mfp = true;
3047 } else {
3048 sta->sta.mfp = false;
3049 }
3050
3051 sta->sta.wme = elems.wmm_param && local->hw.queues >= IEEE80211_NUM_ACS;
3052
3053 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
3054 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
3055 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
3056 if (err) {
3057 sdata_info(sdata,
3058 "failed to move station %pM to desired state\n",
3059 sta->sta.addr);
3060 WARN_ON(__sta_info_destroy(sta));
3061 mutex_unlock(&sdata->local->sta_mtx);
3062 ret = false;
3063 goto out;
3064 }
3065
3066 mutex_unlock(&sdata->local->sta_mtx);
3067
3068
3069
3070
3071
3072
3073
3074 ifmgd->wmm_last_param_set = -1;
3075
3076 if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
3077 ieee80211_set_wmm_default(sdata, false, false);
3078 } else if (!ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
3079 elems.wmm_param_len)) {
3080
3081 ieee80211_set_wmm_default(sdata, false, true);
3082
3083
3084
3085
3086
3087
3088
3089 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
3090 }
3091 changed |= BSS_CHANGED_QOS;
3092
3093 if (elems.max_idle_period_ie) {
3094 bss_conf->max_idle_period =
3095 le16_to_cpu(elems.max_idle_period_ie->max_idle_period);
3096 bss_conf->protected_keep_alive =
3097 !!(elems.max_idle_period_ie->idle_options &
3098 WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE);
3099 changed |= BSS_CHANGED_KEEP_ALIVE;
3100 } else {
3101 bss_conf->max_idle_period = 0;
3102 bss_conf->protected_keep_alive = false;
3103 }
3104
3105
3106
3107 bss_conf->aid = aid;
3108 bss_conf->assoc_capability = capab_info;
3109 ieee80211_set_associated(sdata, cbss, changed);
3110
3111
3112
3113
3114
3115 if (ifmgd->use_4addr)
3116 ieee80211_send_4addr_nullfunc(local, sdata);
3117
3118
3119
3120
3121
3122 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
3123 ieee80211_sta_reset_beacon_monitor(sdata);
3124
3125 ret = true;
3126 out:
3127 kfree(bss_ies);
3128 return ret;
3129}
3130
3131static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3132 struct ieee80211_mgmt *mgmt,
3133 size_t len)
3134{
3135 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3136 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3137 u16 capab_info, status_code, aid;
3138 struct ieee802_11_elems elems;
3139 int ac, uapsd_queues = -1;
3140 u8 *pos;
3141 bool reassoc;
3142 struct cfg80211_bss *bss;
3143 struct ieee80211_event event = {
3144 .type = MLME_EVENT,
3145 .u.mlme.data = ASSOC_EVENT,
3146 };
3147
3148 sdata_assert_lock(sdata);
3149
3150 if (!assoc_data)
3151 return;
3152 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
3153 return;
3154
3155
3156
3157
3158
3159
3160 if (len < 24 + 6)
3161 return;
3162
3163 reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
3164 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3165 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3166 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3167
3168 sdata_info(sdata,
3169 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3170 reassoc ? "Rea" : "A", mgmt->sa,
3171 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
3172
3173 if (assoc_data->fils_kek_len &&
3174 fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
3175 return;
3176
3177 pos = mgmt->u.assoc_resp.variable;
3178 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
3179
3180 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
3181 elems.timeout_int &&
3182 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
3183 u32 tu, ms;
3184 tu = le32_to_cpu(elems.timeout_int->value);
3185 ms = tu * 1024 / 1000;
3186 sdata_info(sdata,
3187 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3188 mgmt->sa, tu, ms);
3189 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
3190 assoc_data->timeout_started = true;
3191 if (ms > IEEE80211_ASSOC_TIMEOUT)
3192 run_again(sdata, assoc_data->timeout);
3193 return;
3194 }
3195
3196 bss = assoc_data->bss;
3197
3198 if (status_code != WLAN_STATUS_SUCCESS) {
3199 sdata_info(sdata, "%pM denied association (code=%d)\n",
3200 mgmt->sa, status_code);
3201 ieee80211_destroy_assoc_data(sdata, false, false);
3202 event.u.mlme.status = MLME_DENIED;
3203 event.u.mlme.reason = status_code;
3204 drv_event_callback(sdata->local, sdata, &event);
3205 } else {
3206 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
3207
3208 ieee80211_destroy_assoc_data(sdata, false, false);
3209 cfg80211_assoc_timeout(sdata->dev, bss);
3210 return;
3211 }
3212 event.u.mlme.status = MLME_SUCCESS;
3213 drv_event_callback(sdata->local, sdata, &event);
3214 sdata_info(sdata, "associated\n");
3215
3216
3217
3218
3219
3220
3221 ieee80211_destroy_assoc_data(sdata, true, false);
3222
3223
3224 uapsd_queues = 0;
3225 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3226 if (sdata->tx_conf[ac].uapsd)
3227 uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
3228 }
3229
3230 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues);
3231}
3232
3233static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
3234 struct ieee80211_mgmt *mgmt, size_t len,
3235 struct ieee80211_rx_status *rx_status,
3236 struct ieee802_11_elems *elems)
3237{
3238 struct ieee80211_local *local = sdata->local;
3239 struct ieee80211_bss *bss;
3240 struct ieee80211_channel *channel;
3241
3242 sdata_assert_lock(sdata);
3243
3244 channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
3245 if (!channel)
3246 return;
3247
3248 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
3249 channel);
3250 if (bss) {
3251 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
3252 ieee80211_rx_bss_put(local, bss);
3253 }
3254}
3255
3256
3257static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
3258 struct sk_buff *skb)
3259{
3260 struct ieee80211_mgmt *mgmt = (void *)skb->data;
3261 struct ieee80211_if_managed *ifmgd;
3262 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
3263 size_t baselen, len = skb->len;
3264 struct ieee802_11_elems elems;
3265
3266 ifmgd = &sdata->u.mgd;
3267
3268 sdata_assert_lock(sdata);
3269
3270 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
3271 return;
3272
3273 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3274 if (baselen > len)
3275 return;
3276
3277 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
3278 false, &elems);
3279
3280 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
3281
3282 if (ifmgd->associated &&
3283 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3284 ieee80211_reset_ap_probe(sdata);
3285}
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302static const u64 care_about_ies =
3303 (1ULL << WLAN_EID_COUNTRY) |
3304 (1ULL << WLAN_EID_ERP_INFO) |
3305 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3306 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3307 (1ULL << WLAN_EID_HT_CAPABILITY) |
3308 (1ULL << WLAN_EID_HT_OPERATION) |
3309 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
3310
3311static void ieee80211_handle_beacon_sig(struct ieee80211_sub_if_data *sdata,
3312 struct ieee80211_if_managed *ifmgd,
3313 struct ieee80211_bss_conf *bss_conf,
3314 struct ieee80211_local *local,
3315 struct ieee80211_rx_status *rx_status)
3316{
3317
3318
3319 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3320 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3321 ewma_beacon_signal_init(&ifmgd->ave_beacon_signal);
3322 ifmgd->last_cqm_event_signal = 0;
3323 ifmgd->count_beacon_signal = 1;
3324 ifmgd->last_ave_beacon_signal = 0;
3325 } else {
3326 ifmgd->count_beacon_signal++;
3327 }
3328
3329 ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal);
3330
3331 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3332 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3333 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3334 int last_sig = ifmgd->last_ave_beacon_signal;
3335 struct ieee80211_event event = {
3336 .type = RSSI_EVENT,
3337 };
3338
3339
3340
3341
3342
3343 if (sig > ifmgd->rssi_max_thold &&
3344 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3345 ifmgd->last_ave_beacon_signal = sig;
3346 event.u.rssi.data = RSSI_EVENT_HIGH;
3347 drv_event_callback(local, sdata, &event);
3348 } else if (sig < ifmgd->rssi_min_thold &&
3349 (last_sig >= ifmgd->rssi_max_thold ||
3350 last_sig == 0)) {
3351 ifmgd->last_ave_beacon_signal = sig;
3352 event.u.rssi.data = RSSI_EVENT_LOW;
3353 drv_event_callback(local, sdata, &event);
3354 }
3355 }
3356
3357 if (bss_conf->cqm_rssi_thold &&
3358 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
3359 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
3360 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3361 int last_event = ifmgd->last_cqm_event_signal;
3362 int thold = bss_conf->cqm_rssi_thold;
3363 int hyst = bss_conf->cqm_rssi_hyst;
3364
3365 if (sig < thold &&
3366 (last_event == 0 || sig < last_event - hyst)) {
3367 ifmgd->last_cqm_event_signal = sig;
3368 ieee80211_cqm_rssi_notify(
3369 &sdata->vif,
3370 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3371 sig, GFP_KERNEL);
3372 } else if (sig > thold &&
3373 (last_event == 0 || sig > last_event + hyst)) {
3374 ifmgd->last_cqm_event_signal = sig;
3375 ieee80211_cqm_rssi_notify(
3376 &sdata->vif,
3377 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3378 sig, GFP_KERNEL);
3379 }
3380 }
3381
3382 if (bss_conf->cqm_rssi_low &&
3383 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3384 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3385 int last_event = ifmgd->last_cqm_event_signal;
3386 int low = bss_conf->cqm_rssi_low;
3387 int high = bss_conf->cqm_rssi_high;
3388
3389 if (sig < low &&
3390 (last_event == 0 || last_event >= low)) {
3391 ifmgd->last_cqm_event_signal = sig;
3392 ieee80211_cqm_rssi_notify(
3393 &sdata->vif,
3394 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3395 sig, GFP_KERNEL);
3396 } else if (sig > high &&
3397 (last_event == 0 || last_event <= high)) {
3398 ifmgd->last_cqm_event_signal = sig;
3399 ieee80211_cqm_rssi_notify(
3400 &sdata->vif,
3401 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3402 sig, GFP_KERNEL);
3403 }
3404 }
3405}
3406
3407static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
3408 struct ieee80211_mgmt *mgmt, size_t len,
3409 struct ieee80211_rx_status *rx_status)
3410{
3411 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3412 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3413 size_t baselen;
3414 struct ieee802_11_elems elems;
3415 struct ieee80211_local *local = sdata->local;
3416 struct ieee80211_chanctx_conf *chanctx_conf;
3417 struct ieee80211_channel *chan;
3418 struct sta_info *sta;
3419 u32 changed = 0;
3420 bool erp_valid;
3421 u8 erp_value = 0;
3422 u32 ncrc;
3423 u8 *bssid;
3424 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
3425
3426 sdata_assert_lock(sdata);
3427
3428
3429 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
3430 if (baselen > len)
3431 return;
3432
3433 rcu_read_lock();
3434 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3435 if (!chanctx_conf) {
3436 rcu_read_unlock();
3437 return;
3438 }
3439
3440 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
3441 rcu_read_unlock();
3442 return;
3443 }
3444 chan = chanctx_conf->def.chan;
3445 rcu_read_unlock();
3446
3447 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
3448 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
3449 ieee802_11_parse_elems(mgmt->u.beacon.variable,
3450 len - baselen, false, &elems);
3451
3452 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
3453 if (elems.tim && !elems.parse_error) {
3454 const struct ieee80211_tim_ie *tim_ie = elems.tim;
3455 ifmgd->dtim_period = tim_ie->dtim_period;
3456 }
3457 ifmgd->have_beacon = true;
3458 ifmgd->assoc_data->need_beacon = false;
3459 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
3460 sdata->vif.bss_conf.sync_tsf =
3461 le64_to_cpu(mgmt->u.beacon.timestamp);
3462 sdata->vif.bss_conf.sync_device_ts =
3463 rx_status->device_timestamp;
3464 if (elems.tim)
3465 sdata->vif.bss_conf.sync_dtim_count =
3466 elems.tim->dtim_count;
3467 else
3468 sdata->vif.bss_conf.sync_dtim_count = 0;
3469 }
3470
3471 ifmgd->assoc_data->timeout = jiffies;
3472 ifmgd->assoc_data->timeout_started = true;
3473 run_again(sdata, ifmgd->assoc_data->timeout);
3474 return;
3475 }
3476
3477 if (!ifmgd->associated ||
3478 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3479 return;
3480 bssid = ifmgd->associated->bssid;
3481
3482 if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
3483 ieee80211_handle_beacon_sig(sdata, ifmgd, bss_conf,
3484 local, rx_status);
3485
3486 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
3487 mlme_dbg_ratelimited(sdata,
3488 "cancelling AP probe due to a received beacon\n");
3489 ieee80211_reset_ap_probe(sdata);
3490 }
3491
3492
3493
3494
3495
3496 ieee80211_sta_reset_beacon_monitor(sdata);
3497
3498 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
3499 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
3500 len - baselen, false, &elems,
3501 care_about_ies, ncrc);
3502
3503 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
3504 ieee80211_check_tim(elems.tim, elems.tim_len, ifmgd->aid)) {
3505 if (local->hw.conf.dynamic_ps_timeout > 0) {
3506 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3507 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3508 ieee80211_hw_config(local,
3509 IEEE80211_CONF_CHANGE_PS);
3510 }
3511 ieee80211_send_nullfunc(local, sdata, false);
3512 } else if (!local->pspolling && sdata->u.mgd.powersave) {
3513 local->pspolling = true;
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523 ieee80211_send_pspoll(local, sdata);
3524 }
3525 }
3526
3527 if (sdata->vif.p2p ||
3528 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
3529 struct ieee80211_p2p_noa_attr noa = {};
3530 int ret;
3531
3532 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3533 len - baselen,
3534 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
3535 (u8 *) &noa, sizeof(noa));
3536 if (ret >= 2) {
3537 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3538
3539 sdata->u.mgd.p2p_noa_index = noa.index;
3540 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3541 changed |= BSS_CHANGED_P2P_PS;
3542
3543
3544
3545
3546 ifmgd->beacon_crc_valid = false;
3547 }
3548 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3549
3550 sdata->u.mgd.p2p_noa_index = -1;
3551 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
3552 changed |= BSS_CHANGED_P2P_PS;
3553 ifmgd->beacon_crc_valid = false;
3554 }
3555 }
3556
3557 if (ifmgd->csa_waiting_bcn)
3558 ieee80211_chswitch_post_beacon(sdata);
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
3569 sdata->vif.bss_conf.sync_tsf =
3570 le64_to_cpu(mgmt->u.beacon.timestamp);
3571 sdata->vif.bss_conf.sync_device_ts =
3572 rx_status->device_timestamp;
3573 if (elems.tim)
3574 sdata->vif.bss_conf.sync_dtim_count =
3575 elems.tim->dtim_count;
3576 else
3577 sdata->vif.bss_conf.sync_dtim_count = 0;
3578 }
3579
3580 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
3581 return;
3582 ifmgd->beacon_crc = ncrc;
3583 ifmgd->beacon_crc_valid = true;
3584
3585 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
3586
3587 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
3588 rx_status->device_timestamp,
3589 &elems, true);
3590
3591 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
3592 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
3593 elems.wmm_param_len))
3594 changed |= BSS_CHANGED_QOS;
3595
3596
3597
3598
3599
3600 if (!ifmgd->have_beacon) {
3601
3602 if (elems.tim)
3603 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3604 else
3605 bss_conf->dtim_period = 1;
3606
3607 changed |= BSS_CHANGED_BEACON_INFO;
3608 ifmgd->have_beacon = true;
3609
3610 mutex_lock(&local->iflist_mtx);
3611 ieee80211_recalc_ps(local);
3612 mutex_unlock(&local->iflist_mtx);
3613
3614 ieee80211_recalc_ps_vif(sdata);
3615 }
3616
3617 if (elems.erp_info) {
3618 erp_valid = true;
3619 erp_value = elems.erp_info[0];
3620 } else {
3621 erp_valid = false;
3622 }
3623 changed |= ieee80211_handle_bss_capability(sdata,
3624 le16_to_cpu(mgmt->u.beacon.capab_info),
3625 erp_valid, erp_value);
3626
3627 mutex_lock(&local->sta_mtx);
3628 sta = sta_info_get(sdata, bssid);
3629
3630 if (ieee80211_config_bw(sdata, sta,
3631 elems.ht_cap_elem, elems.ht_operation,
3632 elems.vht_operation, bssid, &changed)) {
3633 mutex_unlock(&local->sta_mtx);
3634 sdata_info(sdata,
3635 "failed to follow AP %pM bandwidth change, disconnect\n",
3636 bssid);
3637 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3638 WLAN_REASON_DEAUTH_LEAVING,
3639 true, deauth_buf);
3640 ieee80211_report_disconnect(sdata, deauth_buf,
3641 sizeof(deauth_buf), true,
3642 WLAN_REASON_DEAUTH_LEAVING);
3643 return;
3644 }
3645
3646 if (sta && elems.opmode_notif)
3647 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
3648 rx_status->band);
3649 mutex_unlock(&local->sta_mtx);
3650
3651 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
3652 elems.country_elem,
3653 elems.country_elem_len,
3654 elems.pwr_constr_elem,
3655 elems.cisco_dtpc_elem);
3656
3657 ieee80211_bss_info_change_notify(sdata, changed);
3658}
3659
3660void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3661 struct sk_buff *skb)
3662{
3663 struct ieee80211_rx_status *rx_status;
3664 struct ieee80211_mgmt *mgmt;
3665 u16 fc;
3666 struct ieee802_11_elems elems;
3667 int ies_len;
3668
3669 rx_status = (struct ieee80211_rx_status *) skb->cb;
3670 mgmt = (struct ieee80211_mgmt *) skb->data;
3671 fc = le16_to_cpu(mgmt->frame_control);
3672
3673 sdata_lock(sdata);
3674
3675 switch (fc & IEEE80211_FCTL_STYPE) {
3676 case IEEE80211_STYPE_BEACON:
3677 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
3678 break;
3679 case IEEE80211_STYPE_PROBE_RESP:
3680 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3681 break;
3682 case IEEE80211_STYPE_AUTH:
3683 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
3684 break;
3685 case IEEE80211_STYPE_DEAUTH:
3686 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
3687 break;
3688 case IEEE80211_STYPE_DISASSOC:
3689 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
3690 break;
3691 case IEEE80211_STYPE_ASSOC_RESP:
3692 case IEEE80211_STYPE_REASSOC_RESP:
3693 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
3694 break;
3695 case IEEE80211_STYPE_ACTION:
3696 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
3697 ies_len = skb->len -
3698 offsetof(struct ieee80211_mgmt,
3699 u.action.u.chan_switch.variable);
3700
3701 if (ies_len < 0)
3702 break;
3703
3704 ieee802_11_parse_elems(
3705 mgmt->u.action.u.chan_switch.variable,
3706 ies_len, true, &elems);
3707
3708 if (elems.parse_error)
3709 break;
3710
3711 ieee80211_sta_process_chanswitch(sdata,
3712 rx_status->mactime,
3713 rx_status->device_timestamp,
3714 &elems, false);
3715 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3716 ies_len = skb->len -
3717 offsetof(struct ieee80211_mgmt,
3718 u.action.u.ext_chan_switch.variable);
3719
3720 if (ies_len < 0)
3721 break;
3722
3723 ieee802_11_parse_elems(
3724 mgmt->u.action.u.ext_chan_switch.variable,
3725 ies_len, true, &elems);
3726
3727 if (elems.parse_error)
3728 break;
3729
3730
3731 elems.ext_chansw_ie =
3732 &mgmt->u.action.u.ext_chan_switch.data;
3733
3734 ieee80211_sta_process_chanswitch(sdata,
3735 rx_status->mactime,
3736 rx_status->device_timestamp,
3737 &elems, false);
3738 }
3739 break;
3740 }
3741 sdata_unlock(sdata);
3742}
3743
3744static void ieee80211_sta_timer(struct timer_list *t)
3745{
3746 struct ieee80211_sub_if_data *sdata =
3747 from_timer(sdata, t, u.mgd.timer);
3748
3749 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
3750}
3751
3752static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
3753 u8 *bssid, u8 reason, bool tx)
3754{
3755 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
3756
3757 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
3758 tx, frame_buf);
3759
3760 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
3761 reason);
3762}
3763
3764static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
3765{
3766 struct ieee80211_local *local = sdata->local;
3767 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3768 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
3769 u32 tx_flags = 0;
3770 u16 trans = 1;
3771 u16 status = 0;
3772
3773 sdata_assert_lock(sdata);
3774
3775 if (WARN_ON_ONCE(!auth_data))
3776 return -EINVAL;
3777
3778 auth_data->tries++;
3779
3780 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
3781 sdata_info(sdata, "authentication with %pM timed out\n",
3782 auth_data->bss->bssid);
3783
3784
3785
3786
3787
3788 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3789
3790 return -ETIMEDOUT;
3791 }
3792
3793 drv_mgd_prepare_tx(local, sdata);
3794
3795 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3796 auth_data->bss->bssid, auth_data->tries,
3797 IEEE80211_AUTH_MAX_TRIES);
3798
3799 auth_data->expected_transaction = 2;
3800
3801 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3802 trans = auth_data->sae_trans;
3803 status = auth_data->sae_status;
3804 auth_data->expected_transaction = trans;
3805 }
3806
3807 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
3808 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3809 IEEE80211_TX_INTFL_MLME_CONN_TX;
3810
3811 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3812 auth_data->data, auth_data->data_len,
3813 auth_data->bss->bssid,
3814 auth_data->bss->bssid, NULL, 0, 0,
3815 tx_flags);
3816
3817 if (tx_flags == 0) {
3818 if (auth_data->algorithm == WLAN_AUTH_SAE)
3819 auth_data->timeout = jiffies +
3820 IEEE80211_AUTH_TIMEOUT_SAE;
3821 else
3822 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
3823 } else {
3824 auth_data->timeout =
3825 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
3826 }
3827
3828 auth_data->timeout_started = true;
3829 run_again(sdata, auth_data->timeout);
3830
3831 return 0;
3832}
3833
3834static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3835{
3836 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3837 struct ieee80211_local *local = sdata->local;
3838
3839 sdata_assert_lock(sdata);
3840
3841 assoc_data->tries++;
3842 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
3843 sdata_info(sdata, "association with %pM timed out\n",
3844 assoc_data->bss->bssid);
3845
3846
3847
3848
3849
3850 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3851
3852 return -ETIMEDOUT;
3853 }
3854
3855 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3856 assoc_data->bss->bssid, assoc_data->tries,
3857 IEEE80211_ASSOC_MAX_TRIES);
3858 ieee80211_send_assoc(sdata);
3859
3860 if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
3861 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
3862 assoc_data->timeout_started = true;
3863 run_again(sdata, assoc_data->timeout);
3864 } else {
3865 assoc_data->timeout =
3866 round_jiffies_up(jiffies +
3867 IEEE80211_ASSOC_TIMEOUT_LONG);
3868 assoc_data->timeout_started = true;
3869 run_again(sdata, assoc_data->timeout);
3870 }
3871
3872 return 0;
3873}
3874
3875void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3876 __le16 fc, bool acked)
3877{
3878 struct ieee80211_local *local = sdata->local;
3879
3880 sdata->u.mgd.status_fc = fc;
3881 sdata->u.mgd.status_acked = acked;
3882 sdata->u.mgd.status_received = true;
3883
3884 ieee80211_queue_work(&local->hw, &sdata->work);
3885}
3886
3887void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
3888{
3889 struct ieee80211_local *local = sdata->local;
3890 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3891
3892 sdata_lock(sdata);
3893
3894 if (ifmgd->status_received) {
3895 __le16 fc = ifmgd->status_fc;
3896 bool status_acked = ifmgd->status_acked;
3897
3898 ifmgd->status_received = false;
3899 if (ifmgd->auth_data && ieee80211_is_auth(fc)) {
3900 if (status_acked) {
3901 if (ifmgd->auth_data->algorithm ==
3902 WLAN_AUTH_SAE)
3903 ifmgd->auth_data->timeout =
3904 jiffies +
3905 IEEE80211_AUTH_TIMEOUT_SAE;
3906 else
3907 ifmgd->auth_data->timeout =
3908 jiffies +
3909 IEEE80211_AUTH_TIMEOUT_SHORT;
3910 run_again(sdata, ifmgd->auth_data->timeout);
3911 } else {
3912 ifmgd->auth_data->timeout = jiffies - 1;
3913 }
3914 ifmgd->auth_data->timeout_started = true;
3915 } else if (ifmgd->assoc_data &&
3916 (ieee80211_is_assoc_req(fc) ||
3917 ieee80211_is_reassoc_req(fc))) {
3918 if (status_acked) {
3919 ifmgd->assoc_data->timeout =
3920 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
3921 run_again(sdata, ifmgd->assoc_data->timeout);
3922 } else {
3923 ifmgd->assoc_data->timeout = jiffies - 1;
3924 }
3925 ifmgd->assoc_data->timeout_started = true;
3926 }
3927 }
3928
3929 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
3930 time_after(jiffies, ifmgd->auth_data->timeout)) {
3931 if (ifmgd->auth_data->done) {
3932
3933
3934
3935
3936 ieee80211_destroy_auth_data(sdata, false);
3937 } else if (ieee80211_auth(sdata)) {
3938 u8 bssid[ETH_ALEN];
3939 struct ieee80211_event event = {
3940 .type = MLME_EVENT,
3941 .u.mlme.data = AUTH_EVENT,
3942 .u.mlme.status = MLME_TIMEOUT,
3943 };
3944
3945 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3946
3947 ieee80211_destroy_auth_data(sdata, false);
3948
3949 cfg80211_auth_timeout(sdata->dev, bssid);
3950 drv_event_callback(sdata->local, sdata, &event);
3951 }
3952 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
3953 run_again(sdata, ifmgd->auth_data->timeout);
3954
3955 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
3956 time_after(jiffies, ifmgd->assoc_data->timeout)) {
3957 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
3958 ieee80211_do_assoc(sdata)) {
3959 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
3960 struct ieee80211_event event = {
3961 .type = MLME_EVENT,
3962 .u.mlme.data = ASSOC_EVENT,
3963 .u.mlme.status = MLME_TIMEOUT,
3964 };
3965
3966 ieee80211_destroy_assoc_data(sdata, false, false);
3967 cfg80211_assoc_timeout(sdata->dev, bss);
3968 drv_event_callback(sdata->local, sdata, &event);
3969 }
3970 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
3971 run_again(sdata, ifmgd->assoc_data->timeout);
3972
3973 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
3974 ifmgd->associated) {
3975 u8 bssid[ETH_ALEN];
3976 int max_tries;
3977
3978 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
3979
3980 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
3981 max_tries = max_nullfunc_tries;
3982 else
3983 max_tries = max_probe_tries;
3984
3985
3986 if (!ifmgd->probe_send_count)
3987 ieee80211_reset_ap_probe(sdata);
3988 else if (ifmgd->nullfunc_failed) {
3989 if (ifmgd->probe_send_count < max_tries) {
3990 mlme_dbg(sdata,
3991 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3992 bssid, ifmgd->probe_send_count,
3993 max_tries);
3994 ieee80211_mgd_probe_ap_send(sdata);
3995 } else {
3996 mlme_dbg(sdata,
3997 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3998 bssid);
3999 ieee80211_sta_connection_lost(sdata, bssid,
4000 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
4001 false);
4002 }
4003 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
4004 run_again(sdata, ifmgd->probe_timeout);
4005 else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
4006 mlme_dbg(sdata,
4007 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
4008 bssid, probe_wait_ms);
4009 ieee80211_sta_connection_lost(sdata, bssid,
4010 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4011 } else if (ifmgd->probe_send_count < max_tries) {
4012 mlme_dbg(sdata,
4013 "No probe response from AP %pM after %dms, try %d/%i\n",
4014 bssid, probe_wait_ms,
4015 ifmgd->probe_send_count, max_tries);
4016 ieee80211_mgd_probe_ap_send(sdata);
4017 } else {
4018
4019
4020
4021
4022 mlme_dbg(sdata,
4023 "No probe response from AP %pM after %dms, disconnecting.\n",
4024 bssid, probe_wait_ms);
4025
4026 ieee80211_sta_connection_lost(sdata, bssid,
4027 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4028 }
4029 }
4030
4031 sdata_unlock(sdata);
4032}
4033
4034static void ieee80211_sta_bcn_mon_timer(struct timer_list *t)
4035{
4036 struct ieee80211_sub_if_data *sdata =
4037 from_timer(sdata, t, u.mgd.bcn_mon_timer);
4038 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4039
4040 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4041 return;
4042
4043 sdata->u.mgd.connection_loss = false;
4044 ieee80211_queue_work(&sdata->local->hw,
4045 &sdata->u.mgd.beacon_connection_loss_work);
4046}
4047
4048static void ieee80211_sta_conn_mon_timer(struct timer_list *t)
4049{
4050 struct ieee80211_sub_if_data *sdata =
4051 from_timer(sdata, t, u.mgd.conn_mon_timer);
4052 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4053 struct ieee80211_local *local = sdata->local;
4054
4055 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4056 return;
4057
4058 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
4059}
4060
4061static void ieee80211_sta_monitor_work(struct work_struct *work)
4062{
4063 struct ieee80211_sub_if_data *sdata =
4064 container_of(work, struct ieee80211_sub_if_data,
4065 u.mgd.monitor_work);
4066
4067 ieee80211_mgd_probe_ap(sdata, false);
4068}
4069
4070static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
4071{
4072 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
4073 __ieee80211_stop_poll(sdata);
4074
4075
4076 if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
4077 ieee80211_queue_work(&sdata->local->hw,
4078 &sdata->u.mgd.monitor_work);
4079 }
4080}
4081
4082#ifdef CONFIG_PM
4083void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
4084{
4085 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4086 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4087
4088 sdata_lock(sdata);
4089
4090 if (ifmgd->auth_data || ifmgd->assoc_data) {
4091 const u8 *bssid = ifmgd->auth_data ?
4092 ifmgd->auth_data->bss->bssid :
4093 ifmgd->assoc_data->bss->bssid;
4094
4095
4096
4097
4098
4099
4100 ieee80211_send_deauth_disassoc(sdata, bssid,
4101 IEEE80211_STYPE_DEAUTH,
4102 WLAN_REASON_DEAUTH_LEAVING,
4103 false, frame_buf);
4104 if (ifmgd->assoc_data)
4105 ieee80211_destroy_assoc_data(sdata, false, true);
4106 if (ifmgd->auth_data)
4107 ieee80211_destroy_auth_data(sdata, false);
4108 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4109 IEEE80211_DEAUTH_FRAME_LEN);
4110 }
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129 if (ifmgd->associated && !sdata->local->wowlan) {
4130 u8 bssid[ETH_ALEN];
4131 struct cfg80211_deauth_request req = {
4132 .reason_code = WLAN_REASON_DEAUTH_LEAVING,
4133 .bssid = bssid,
4134 };
4135
4136 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4137 ieee80211_mgd_deauth(sdata, &req);
4138 }
4139
4140 sdata_unlock(sdata);
4141}
4142
4143void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
4144{
4145 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4146
4147 sdata_lock(sdata);
4148 if (!ifmgd->associated) {
4149 sdata_unlock(sdata);
4150 return;
4151 }
4152
4153 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
4154 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
4155 mlme_dbg(sdata, "driver requested disconnect after resume\n");
4156 ieee80211_sta_connection_lost(sdata,
4157 ifmgd->associated->bssid,
4158 WLAN_REASON_UNSPECIFIED,
4159 true);
4160 sdata_unlock(sdata);
4161 return;
4162 }
4163 sdata_unlock(sdata);
4164}
4165#endif
4166
4167
4168void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
4169{
4170 struct ieee80211_if_managed *ifmgd;
4171
4172 ifmgd = &sdata->u.mgd;
4173 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
4174 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
4175 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4176 ieee80211_beacon_connection_loss_work);
4177 INIT_WORK(&ifmgd->csa_connection_drop_work,
4178 ieee80211_csa_connection_drop_work);
4179 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
4180 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4181 ieee80211_tdls_peer_del_work);
4182 timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0);
4183 timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0);
4184 timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0);
4185 timer_setup(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 0);
4186 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4187 ieee80211_sta_handle_tspec_ac_params_wk);
4188
4189 ifmgd->flags = 0;
4190 ifmgd->powersave = sdata->wdev.ps;
4191 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4192 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
4193 ifmgd->p2p_noa_index = -1;
4194
4195 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
4196 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4197 else
4198 ifmgd->req_smps = IEEE80211_SMPS_OFF;
4199
4200
4201 spin_lock_init(&ifmgd->teardown_lock);
4202 ifmgd->teardown_skb = NULL;
4203 ifmgd->orig_teardown_skb = NULL;
4204}
4205
4206
4207void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
4208{
4209 struct ieee80211_sub_if_data *sdata;
4210
4211
4212 rcu_read_lock();
4213 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4214 if (ieee80211_sdata_running(sdata))
4215 ieee80211_restart_sta_timer(sdata);
4216 }
4217 rcu_read_unlock();
4218}
4219
4220static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4221 struct cfg80211_bss *cbss)
4222{
4223 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4224 const u8 *ht_cap_ie, *vht_cap_ie;
4225 const struct ieee80211_ht_cap *ht_cap;
4226 const struct ieee80211_vht_cap *vht_cap;
4227 u8 chains = 1;
4228
4229 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4230 return chains;
4231
4232 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4233 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4234 ht_cap = (void *)(ht_cap_ie + 2);
4235 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4236
4237
4238
4239
4240 }
4241
4242 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4243 return chains;
4244
4245 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4246 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4247 u8 nss;
4248 u16 tx_mcs_map;
4249
4250 vht_cap = (void *)(vht_cap_ie + 2);
4251 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4252 for (nss = 8; nss > 0; nss--) {
4253 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4254 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4255 break;
4256 }
4257
4258 chains = max(chains, nss);
4259 }
4260
4261 return chains;
4262}
4263
4264static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
4265 struct cfg80211_bss *cbss)
4266{
4267 struct ieee80211_local *local = sdata->local;
4268 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4269 const struct ieee80211_ht_cap *ht_cap = NULL;
4270 const struct ieee80211_ht_operation *ht_oper = NULL;
4271 const struct ieee80211_vht_operation *vht_oper = NULL;
4272 struct ieee80211_supported_band *sband;
4273 struct cfg80211_chan_def chandef;
4274 int ret;
4275 u32 i;
4276 bool have_80mhz;
4277
4278 sband = local->hw.wiphy->bands[cbss->channel->band];
4279
4280 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
4281 IEEE80211_STA_DISABLE_80P80MHZ |
4282 IEEE80211_STA_DISABLE_160MHZ);
4283
4284 rcu_read_lock();
4285
4286 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
4287 sband->ht_cap.ht_supported) {
4288 const u8 *ht_oper_ie, *ht_cap_ie;
4289
4290 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
4291 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
4292 ht_oper = (void *)(ht_oper_ie + 2);
4293
4294 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4295 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
4296 ht_cap = (void *)(ht_cap_ie + 2);
4297
4298 if (!ht_cap) {
4299 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4300 ht_oper = NULL;
4301 }
4302 }
4303
4304 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
4305 sband->vht_cap.vht_supported) {
4306 const u8 *vht_oper_ie, *vht_cap;
4307
4308 vht_oper_ie = ieee80211_bss_get_ie(cbss,
4309 WLAN_EID_VHT_OPERATION);
4310 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
4311 vht_oper = (void *)(vht_oper_ie + 2);
4312 if (vht_oper && !ht_oper) {
4313 vht_oper = NULL;
4314 sdata_info(sdata,
4315 "AP advertised VHT without HT, disabling both\n");
4316 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4317 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4318 }
4319
4320 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4321 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
4322 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4323 vht_oper = NULL;
4324 }
4325 }
4326
4327
4328 have_80mhz = false;
4329 for (i = 0; i < sband->n_channels; i++) {
4330 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
4331 IEEE80211_CHAN_NO_80MHZ))
4332 continue;
4333
4334 have_80mhz = true;
4335 break;
4336 }
4337
4338 if (!have_80mhz)
4339 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4340
4341 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
4342 cbss->channel,
4343 ht_oper, vht_oper,
4344 &chandef, false);
4345
4346 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
4347 local->rx_chains);
4348
4349 rcu_read_unlock();
4350
4351
4352 sdata->smps_mode = IEEE80211_SMPS_OFF;
4353
4354 mutex_lock(&local->mtx);
4355
4356
4357
4358
4359
4360 ret = ieee80211_vif_use_channel(sdata, &chandef,
4361 IEEE80211_CHANCTX_SHARED);
4362
4363
4364 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
4365 chandef.width == NL80211_CHAN_WIDTH_10)
4366 goto out;
4367
4368 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
4369 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
4370 ret = ieee80211_vif_use_channel(sdata, &chandef,
4371 IEEE80211_CHANCTX_SHARED);
4372 }
4373 out:
4374 mutex_unlock(&local->mtx);
4375 return ret;
4376}
4377
4378static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
4379 struct cfg80211_bss *cbss, bool assoc,
4380 bool override)
4381{
4382 struct ieee80211_local *local = sdata->local;
4383 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4384 struct ieee80211_bss *bss = (void *)cbss->priv;
4385 struct sta_info *new_sta = NULL;
4386 struct ieee80211_supported_band *sband;
4387 bool have_sta = false;
4388 int err;
4389
4390 sband = local->hw.wiphy->bands[cbss->channel->band];
4391
4392 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
4393 return -EINVAL;
4394
4395
4396 if (local->in_reconfig)
4397 return -EBUSY;
4398
4399 if (assoc) {
4400 rcu_read_lock();
4401 have_sta = sta_info_get(sdata, cbss->bssid);
4402 rcu_read_unlock();
4403 }
4404
4405 if (!have_sta) {
4406 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
4407 if (!new_sta)
4408 return -ENOMEM;
4409 }
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424 if (new_sta) {
4425 u32 rates = 0, basic_rates = 0;
4426 bool have_higher_than_11mbit;
4427 int min_rate = INT_MAX, min_rate_index = -1;
4428 const struct cfg80211_bss_ies *ies;
4429 int shift = ieee80211_vif_get_shift(&sdata->vif);
4430
4431 ieee80211_get_rates(sband, bss->supp_rates,
4432 bss->supp_rates_len,
4433 &rates, &basic_rates,
4434 &have_higher_than_11mbit,
4435 &min_rate, &min_rate_index,
4436 shift);
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446 if (!basic_rates && min_rate_index >= 0) {
4447 sdata_info(sdata,
4448 "No basic rates, using min rate instead\n");
4449 basic_rates = BIT(min_rate_index);
4450 }
4451
4452 new_sta->sta.supp_rates[cbss->channel->band] = rates;
4453 sdata->vif.bss_conf.basic_rates = basic_rates;
4454
4455
4456 if (cbss->channel->band == NL80211_BAND_2GHZ &&
4457 have_higher_than_11mbit)
4458 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
4459 else
4460 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
4461
4462 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
4463
4464
4465 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
4466 rcu_read_lock();
4467 ies = rcu_dereference(cbss->beacon_ies);
4468 if (ies) {
4469 const u8 *tim_ie;
4470
4471 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4472 sdata->vif.bss_conf.sync_device_ts =
4473 bss->device_ts_beacon;
4474 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4475 ies->data, ies->len);
4476 if (tim_ie && tim_ie[1] >= 2)
4477 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
4478 else
4479 sdata->vif.bss_conf.sync_dtim_count = 0;
4480 } else if (!ieee80211_hw_check(&sdata->local->hw,
4481 TIMING_BEACON_ONLY)) {
4482 ies = rcu_dereference(cbss->proberesp_ies);
4483
4484 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4485 sdata->vif.bss_conf.sync_device_ts =
4486 bss->device_ts_presp;
4487 sdata->vif.bss_conf.sync_dtim_count = 0;
4488 } else {
4489 sdata->vif.bss_conf.sync_tsf = 0;
4490 sdata->vif.bss_conf.sync_device_ts = 0;
4491 sdata->vif.bss_conf.sync_dtim_count = 0;
4492 }
4493 rcu_read_unlock();
4494 }
4495
4496 if (new_sta || override) {
4497 err = ieee80211_prep_channel(sdata, cbss);
4498 if (err) {
4499 if (new_sta)
4500 sta_info_free(local, new_sta);
4501 return -EINVAL;
4502 }
4503 }
4504
4505 if (new_sta) {
4506
4507
4508
4509
4510 ieee80211_bss_info_change_notify(sdata,
4511 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
4512 BSS_CHANGED_BEACON_INT);
4513
4514 if (assoc)
4515 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
4516
4517 err = sta_info_insert(new_sta);
4518 new_sta = NULL;
4519 if (err) {
4520 sdata_info(sdata,
4521 "failed to insert STA entry for the AP (error %d)\n",
4522 err);
4523 return err;
4524 }
4525 } else
4526 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
4527
4528
4529 if (local->scanning)
4530 ieee80211_scan_cancel(local);
4531
4532 return 0;
4533}
4534
4535
4536int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
4537 struct cfg80211_auth_request *req)
4538{
4539 struct ieee80211_local *local = sdata->local;
4540 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4541 struct ieee80211_mgd_auth_data *auth_data;
4542 u16 auth_alg;
4543 int err;
4544
4545
4546
4547 switch (req->auth_type) {
4548 case NL80211_AUTHTYPE_OPEN_SYSTEM:
4549 auth_alg = WLAN_AUTH_OPEN;
4550 break;
4551 case NL80211_AUTHTYPE_SHARED_KEY:
4552 if (IS_ERR(local->wep_tx_tfm))
4553 return -EOPNOTSUPP;
4554 auth_alg = WLAN_AUTH_SHARED_KEY;
4555 break;
4556 case NL80211_AUTHTYPE_FT:
4557 auth_alg = WLAN_AUTH_FT;
4558 break;
4559 case NL80211_AUTHTYPE_NETWORK_EAP:
4560 auth_alg = WLAN_AUTH_LEAP;
4561 break;
4562 case NL80211_AUTHTYPE_SAE:
4563 auth_alg = WLAN_AUTH_SAE;
4564 break;
4565 case NL80211_AUTHTYPE_FILS_SK:
4566 auth_alg = WLAN_AUTH_FILS_SK;
4567 break;
4568 case NL80211_AUTHTYPE_FILS_SK_PFS:
4569 auth_alg = WLAN_AUTH_FILS_SK_PFS;
4570 break;
4571 case NL80211_AUTHTYPE_FILS_PK:
4572 auth_alg = WLAN_AUTH_FILS_PK;
4573 break;
4574 default:
4575 return -EOPNOTSUPP;
4576 }
4577
4578 auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len +
4579 req->ie_len, GFP_KERNEL);
4580 if (!auth_data)
4581 return -ENOMEM;
4582
4583 auth_data->bss = req->bss;
4584
4585 if (req->auth_data_len >= 4) {
4586 if (req->auth_type == NL80211_AUTHTYPE_SAE) {
4587 __le16 *pos = (__le16 *) req->auth_data;
4588
4589 auth_data->sae_trans = le16_to_cpu(pos[0]);
4590 auth_data->sae_status = le16_to_cpu(pos[1]);
4591 }
4592 memcpy(auth_data->data, req->auth_data + 4,
4593 req->auth_data_len - 4);
4594 auth_data->data_len += req->auth_data_len - 4;
4595 }
4596
4597 if (req->ie && req->ie_len) {
4598 memcpy(&auth_data->data[auth_data->data_len],
4599 req->ie, req->ie_len);
4600 auth_data->data_len += req->ie_len;
4601 }
4602
4603 if (req->key && req->key_len) {
4604 auth_data->key_len = req->key_len;
4605 auth_data->key_idx = req->key_idx;
4606 memcpy(auth_data->key, req->key, req->key_len);
4607 }
4608
4609 auth_data->algorithm = auth_alg;
4610
4611
4612
4613 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
4614 ifmgd->assoc_data) {
4615 err = -EBUSY;
4616 goto err_free;
4617 }
4618
4619 if (ifmgd->auth_data)
4620 ieee80211_destroy_auth_data(sdata, false);
4621
4622
4623 ifmgd->auth_data = auth_data;
4624
4625 if (ifmgd->associated) {
4626 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4627
4628 sdata_info(sdata,
4629 "disconnect from AP %pM for new auth to %pM\n",
4630 ifmgd->associated->bssid, req->bss->bssid);
4631 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4632 WLAN_REASON_UNSPECIFIED,
4633 false, frame_buf);
4634
4635 ieee80211_report_disconnect(sdata, frame_buf,
4636 sizeof(frame_buf), true,
4637 WLAN_REASON_UNSPECIFIED);
4638 }
4639
4640 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
4641
4642 err = ieee80211_prep_connection(sdata, req->bss, false, false);
4643 if (err)
4644 goto err_clear;
4645
4646 err = ieee80211_auth(sdata);
4647 if (err) {
4648 sta_info_destroy_addr(sdata, req->bss->bssid);
4649 goto err_clear;
4650 }
4651
4652
4653 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
4654 return 0;
4655
4656 err_clear:
4657 eth_zero_addr(ifmgd->bssid);
4658 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
4659 ifmgd->auth_data = NULL;
4660 mutex_lock(&sdata->local->mtx);
4661 ieee80211_vif_release_channel(sdata);
4662 mutex_unlock(&sdata->local->mtx);
4663 err_free:
4664 kfree(auth_data);
4665 return err;
4666}
4667
4668int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4669 struct cfg80211_assoc_request *req)
4670{
4671 struct ieee80211_local *local = sdata->local;
4672 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4673 struct ieee80211_bss *bss = (void *)req->bss->priv;
4674 struct ieee80211_mgd_assoc_data *assoc_data;
4675 const struct cfg80211_bss_ies *beacon_ies;
4676 struct ieee80211_supported_band *sband;
4677 const u8 *ssidie, *ht_ie, *vht_ie;
4678 int i, err;
4679 bool override = false;
4680
4681 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4682 if (!assoc_data)
4683 return -ENOMEM;
4684
4685 rcu_read_lock();
4686 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4687 if (!ssidie) {
4688 rcu_read_unlock();
4689 kfree(assoc_data);
4690 return -EINVAL;
4691 }
4692 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4693 assoc_data->ssid_len = ssidie[1];
4694 rcu_read_unlock();
4695
4696 if (ifmgd->associated) {
4697 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4698
4699 sdata_info(sdata,
4700 "disconnect from AP %pM for new assoc to %pM\n",
4701 ifmgd->associated->bssid, req->bss->bssid);
4702 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4703 WLAN_REASON_UNSPECIFIED,
4704 false, frame_buf);
4705
4706 ieee80211_report_disconnect(sdata, frame_buf,
4707 sizeof(frame_buf), true,
4708 WLAN_REASON_UNSPECIFIED);
4709 }
4710
4711 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4712 err = -EBUSY;
4713 goto err_free;
4714 }
4715
4716 if (ifmgd->assoc_data) {
4717 err = -EBUSY;
4718 goto err_free;
4719 }
4720
4721 if (ifmgd->auth_data) {
4722 bool match;
4723
4724
4725 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
4726 ieee80211_destroy_auth_data(sdata, match);
4727 }
4728
4729
4730
4731 ifmgd->beacon_crc_valid = false;
4732
4733 assoc_data->wmm = bss->wmm_used &&
4734 (local->hw.queues >= IEEE80211_NUM_ACS);
4735
4736
4737
4738
4739
4740
4741
4742
4743 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
4744 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4745 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
4746 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
4747 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4748 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4749 netdev_info(sdata->dev,
4750 "disabling HT/VHT due to WEP/TKIP use\n");
4751 }
4752 }
4753
4754
4755 sband = local->hw.wiphy->bands[req->bss->channel->band];
4756 if (!sband->ht_cap.ht_supported ||
4757 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4758 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
4759 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4760 if (!bss->wmm_used &&
4761 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
4762 netdev_info(sdata->dev,
4763 "disabling HT as WMM/QoS is not supported by the AP\n");
4764 }
4765
4766
4767 if (!sband->vht_cap.vht_supported ||
4768 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4769 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
4770 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4771 if (!bss->wmm_used &&
4772 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
4773 netdev_info(sdata->dev,
4774 "disabling VHT as WMM/QoS is not supported by the AP\n");
4775 }
4776
4777 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4778 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4779 sizeof(ifmgd->ht_capa_mask));
4780
4781 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4782 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4783 sizeof(ifmgd->vht_capa_mask));
4784
4785 if (req->ie && req->ie_len) {
4786 memcpy(assoc_data->ie, req->ie, req->ie_len);
4787 assoc_data->ie_len = req->ie_len;
4788 }
4789
4790 if (req->fils_kek) {
4791
4792 if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) {
4793 err = -EINVAL;
4794 goto err_free;
4795 }
4796 memcpy(assoc_data->fils_kek, req->fils_kek,
4797 req->fils_kek_len);
4798 assoc_data->fils_kek_len = req->fils_kek_len;
4799 }
4800
4801 if (req->fils_nonces)
4802 memcpy(assoc_data->fils_nonces, req->fils_nonces,
4803 2 * FILS_NONCE_LEN);
4804
4805 assoc_data->bss = req->bss;
4806
4807 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4808 if (ifmgd->powersave)
4809 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
4810 else
4811 sdata->smps_mode = IEEE80211_SMPS_OFF;
4812 } else
4813 sdata->smps_mode = ifmgd->req_smps;
4814
4815 assoc_data->capability = req->bss->capability;
4816 assoc_data->supp_rates = bss->supp_rates;
4817 assoc_data->supp_rates_len = bss->supp_rates_len;
4818
4819 rcu_read_lock();
4820 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4821 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4822 assoc_data->ap_ht_param =
4823 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4824 else
4825 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4826 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4827 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4828 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4829 sizeof(struct ieee80211_vht_cap));
4830 else
4831 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4832 rcu_read_unlock();
4833
4834 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
4835 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
4836 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
4837 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
4838
4839 if (bss->wmm_used && bss->uapsd_supported &&
4840 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
4841 assoc_data->uapsd = true;
4842 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4843 } else {
4844 assoc_data->uapsd = false;
4845 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4846 }
4847
4848 if (req->prev_bssid)
4849 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
4850
4851 if (req->use_mfp) {
4852 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4853 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4854 } else {
4855 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4856 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4857 }
4858
4859 if (req->flags & ASSOC_REQ_USE_RRM)
4860 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
4861 else
4862 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
4863
4864 if (req->crypto.control_port)
4865 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4866 else
4867 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4868
4869 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4870 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
4871 sdata->control_port_over_nl80211 =
4872 req->crypto.control_port_over_nl80211;
4873 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
4874 sdata->vif.type);
4875
4876
4877
4878 ifmgd->assoc_data = assoc_data;
4879 ifmgd->dtim_period = 0;
4880 ifmgd->have_beacon = false;
4881
4882
4883 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
4884 struct ieee80211_sta_ht_cap sta_ht_cap;
4885
4886 if (req->flags & ASSOC_REQ_DISABLE_HT)
4887 override = true;
4888
4889 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
4890 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
4891
4892
4893 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) &&
4894 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4895 !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
4896 override = true;
4897
4898 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
4899 req->flags & ASSOC_REQ_DISABLE_VHT)
4900 override = true;
4901 }
4902
4903 if (req->flags & ASSOC_REQ_DISABLE_HT) {
4904 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4905 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4906 }
4907
4908 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4909 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4910
4911 err = ieee80211_prep_connection(sdata, req->bss, true, override);
4912 if (err)
4913 goto err_clear;
4914
4915 rcu_read_lock();
4916 beacon_ies = rcu_dereference(req->bss->beacon_ies);
4917
4918 if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) &&
4919 !beacon_ies) {
4920
4921
4922
4923
4924 sdata_info(sdata, "waiting for beacon from %pM\n",
4925 ifmgd->bssid);
4926 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
4927 assoc_data->timeout_started = true;
4928 assoc_data->need_beacon = true;
4929 } else if (beacon_ies) {
4930 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4931 beacon_ies->data,
4932 beacon_ies->len);
4933 u8 dtim_count = 0;
4934
4935 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4936 const struct ieee80211_tim_ie *tim;
4937 tim = (void *)(tim_ie + 2);
4938 ifmgd->dtim_period = tim->dtim_period;
4939 dtim_count = tim->dtim_count;
4940 }
4941 ifmgd->have_beacon = true;
4942 assoc_data->timeout = jiffies;
4943 assoc_data->timeout_started = true;
4944
4945 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
4946 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4947 sdata->vif.bss_conf.sync_device_ts =
4948 bss->device_ts_beacon;
4949 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4950 }
4951 } else {
4952 assoc_data->timeout = jiffies;
4953 assoc_data->timeout_started = true;
4954 }
4955 rcu_read_unlock();
4956
4957 run_again(sdata, assoc_data->timeout);
4958
4959 if (bss->corrupt_data) {
4960 char *corrupt_type = "data";
4961 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4962 if (bss->corrupt_data &
4963 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4964 corrupt_type = "beacon and probe response";
4965 else
4966 corrupt_type = "beacon";
4967 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4968 corrupt_type = "probe response";
4969 sdata_info(sdata, "associating with AP with corrupt %s\n",
4970 corrupt_type);
4971 }
4972
4973 return 0;
4974 err_clear:
4975 eth_zero_addr(ifmgd->bssid);
4976 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
4977 ifmgd->assoc_data = NULL;
4978 err_free:
4979 kfree(assoc_data);
4980 return err;
4981}
4982
4983int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
4984 struct cfg80211_deauth_request *req)
4985{
4986 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4987 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4988 bool tx = !req->local_state_change;
4989
4990 if (ifmgd->auth_data &&
4991 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
4992 sdata_info(sdata,
4993 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4994 req->bssid, req->reason_code,
4995 ieee80211_get_reason_code_string(req->reason_code));
4996
4997 drv_mgd_prepare_tx(sdata->local, sdata);
4998 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4999 IEEE80211_STYPE_DEAUTH,
5000 req->reason_code, tx,
5001 frame_buf);
5002 ieee80211_destroy_auth_data(sdata, false);
5003 ieee80211_report_disconnect(sdata, frame_buf,
5004 sizeof(frame_buf), true,
5005 req->reason_code);
5006
5007 return 0;
5008 }
5009
5010 if (ifmgd->assoc_data &&
5011 ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
5012 sdata_info(sdata,
5013 "aborting association with %pM by local choice (Reason: %u=%s)\n",
5014 req->bssid, req->reason_code,
5015 ieee80211_get_reason_code_string(req->reason_code));
5016
5017 drv_mgd_prepare_tx(sdata->local, sdata);
5018 ieee80211_send_deauth_disassoc(sdata, req->bssid,
5019 IEEE80211_STYPE_DEAUTH,
5020 req->reason_code, tx,
5021 frame_buf);
5022 ieee80211_destroy_assoc_data(sdata, false, true);
5023 ieee80211_report_disconnect(sdata, frame_buf,
5024 sizeof(frame_buf), true,
5025 req->reason_code);
5026 return 0;
5027 }
5028
5029 if (ifmgd->associated &&
5030 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
5031 sdata_info(sdata,
5032 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
5033 req->bssid, req->reason_code,
5034 ieee80211_get_reason_code_string(req->reason_code));
5035
5036 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5037 req->reason_code, tx, frame_buf);
5038 ieee80211_report_disconnect(sdata, frame_buf,
5039 sizeof(frame_buf), true,
5040 req->reason_code);
5041 return 0;
5042 }
5043
5044 return -ENOTCONN;
5045}
5046
5047int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
5048 struct cfg80211_disassoc_request *req)
5049{
5050 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5051 u8 bssid[ETH_ALEN];
5052 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5053
5054
5055
5056
5057
5058
5059
5060 if (ifmgd->associated != req->bss)
5061 return -ENOLINK;
5062
5063 sdata_info(sdata,
5064 "disassociating from %pM by local choice (Reason: %u=%s)\n",
5065 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
5066
5067 memcpy(bssid, req->bss->bssid, ETH_ALEN);
5068 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
5069 req->reason_code, !req->local_state_change,
5070 frame_buf);
5071
5072 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
5073 req->reason_code);
5074
5075 return 0;
5076}
5077
5078void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
5079{
5080 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5081
5082
5083
5084
5085
5086
5087 cancel_work_sync(&ifmgd->monitor_work);
5088 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
5089 cancel_work_sync(&ifmgd->request_smps_work);
5090 cancel_work_sync(&ifmgd->csa_connection_drop_work);
5091 cancel_work_sync(&ifmgd->chswitch_work);
5092 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
5093
5094 sdata_lock(sdata);
5095 if (ifmgd->assoc_data) {
5096 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
5097 ieee80211_destroy_assoc_data(sdata, false, false);
5098 cfg80211_assoc_timeout(sdata->dev, bss);
5099 }
5100 if (ifmgd->auth_data)
5101 ieee80211_destroy_auth_data(sdata, false);
5102 spin_lock_bh(&ifmgd->teardown_lock);
5103 if (ifmgd->teardown_skb) {
5104 kfree_skb(ifmgd->teardown_skb);
5105 ifmgd->teardown_skb = NULL;
5106 ifmgd->orig_teardown_skb = NULL;
5107 }
5108 spin_unlock_bh(&ifmgd->teardown_lock);
5109 del_timer_sync(&ifmgd->timer);
5110 sdata_unlock(sdata);
5111}
5112
5113void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
5114 enum nl80211_cqm_rssi_threshold_event rssi_event,
5115 s32 rssi_level,
5116 gfp_t gfp)
5117{
5118 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5119
5120 trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level);
5121
5122 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp);
5123}
5124EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
5125
5126void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
5127{
5128 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5129
5130 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
5131
5132 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
5133}
5134EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);
5135