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14#include <net/mac80211.h>
15#include <linux/netdevice.h>
16#include <linux/export.h>
17#include <linux/types.h>
18#include <linux/slab.h>
19#include <linux/skbuff.h>
20#include <linux/etherdevice.h>
21#include <linux/if_arp.h>
22#include <linux/bitmap.h>
23#include <linux/crc32.h>
24#include <net/net_namespace.h>
25#include <net/cfg80211.h>
26#include <net/rtnetlink.h>
27
28#include "ieee80211_i.h"
29#include "driver-ops.h"
30#include "rate.h"
31#include "mesh.h"
32#include "wme.h"
33#include "led.h"
34#include "wep.h"
35
36
37const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
38
39struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
40{
41 struct ieee80211_local *local;
42
43 local = wiphy_priv(wiphy);
44 return &local->hw;
45}
46EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
47
48void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
49{
50 struct sk_buff *skb;
51 struct ieee80211_hdr *hdr;
52
53 skb_queue_walk(&tx->skbs, skb) {
54 hdr = (struct ieee80211_hdr *) skb->data;
55 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
56 }
57}
58
59int ieee80211_frame_duration(enum nl80211_band band, size_t len,
60 int rate, int erp, int short_preamble,
61 int shift)
62{
63 int dur;
64
65
66
67
68
69
70
71
72
73
74
75
76
77 if (band == NL80211_BAND_5GHZ || erp) {
78
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80
81
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84
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86
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88
89
90
91 dur = 16;
92 dur += 16;
93 dur += 4;
94
95
96
97
98
99 dur *= 1 << shift;
100
101
102
103
104 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
105 4 * rate);
106 } else {
107
108
109
110
111
112
113
114
115
116
117 dur = 10;
118 dur += short_preamble ? (72 + 24) : (144 + 48);
119
120 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
121 }
122
123 return dur;
124}
125
126
127__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
128 struct ieee80211_vif *vif,
129 enum nl80211_band band,
130 size_t frame_len,
131 struct ieee80211_rate *rate)
132{
133 struct ieee80211_sub_if_data *sdata;
134 u16 dur;
135 int erp, shift = 0;
136 bool short_preamble = false;
137
138 erp = 0;
139 if (vif) {
140 sdata = vif_to_sdata(vif);
141 short_preamble = sdata->vif.bss_conf.use_short_preamble;
142 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
143 erp = rate->flags & IEEE80211_RATE_ERP_G;
144 shift = ieee80211_vif_get_shift(vif);
145 }
146
147 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
148 short_preamble, shift);
149
150 return cpu_to_le16(dur);
151}
152EXPORT_SYMBOL(ieee80211_generic_frame_duration);
153
154__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
155 struct ieee80211_vif *vif, size_t frame_len,
156 const struct ieee80211_tx_info *frame_txctl)
157{
158 struct ieee80211_local *local = hw_to_local(hw);
159 struct ieee80211_rate *rate;
160 struct ieee80211_sub_if_data *sdata;
161 bool short_preamble;
162 int erp, shift = 0, bitrate;
163 u16 dur;
164 struct ieee80211_supported_band *sband;
165
166 sband = local->hw.wiphy->bands[frame_txctl->band];
167
168 short_preamble = false;
169
170 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
171
172 erp = 0;
173 if (vif) {
174 sdata = vif_to_sdata(vif);
175 short_preamble = sdata->vif.bss_conf.use_short_preamble;
176 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
177 erp = rate->flags & IEEE80211_RATE_ERP_G;
178 shift = ieee80211_vif_get_shift(vif);
179 }
180
181 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
182
183
184 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
185 erp, short_preamble, shift);
186
187 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
188 erp, short_preamble, shift);
189
190 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
191 erp, short_preamble, shift);
192
193 return cpu_to_le16(dur);
194}
195EXPORT_SYMBOL(ieee80211_rts_duration);
196
197__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
198 struct ieee80211_vif *vif,
199 size_t frame_len,
200 const struct ieee80211_tx_info *frame_txctl)
201{
202 struct ieee80211_local *local = hw_to_local(hw);
203 struct ieee80211_rate *rate;
204 struct ieee80211_sub_if_data *sdata;
205 bool short_preamble;
206 int erp, shift = 0, bitrate;
207 u16 dur;
208 struct ieee80211_supported_band *sband;
209
210 sband = local->hw.wiphy->bands[frame_txctl->band];
211
212 short_preamble = false;
213
214 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
215 erp = 0;
216 if (vif) {
217 sdata = vif_to_sdata(vif);
218 short_preamble = sdata->vif.bss_conf.use_short_preamble;
219 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
220 erp = rate->flags & IEEE80211_RATE_ERP_G;
221 shift = ieee80211_vif_get_shift(vif);
222 }
223
224 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
225
226
227 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
228 erp, short_preamble, shift);
229 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
230
231 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
232 erp, short_preamble, shift);
233 }
234
235 return cpu_to_le16(dur);
236}
237EXPORT_SYMBOL(ieee80211_ctstoself_duration);
238
239static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
240{
241 struct ieee80211_local *local = sdata->local;
242 struct ieee80211_vif *vif = &sdata->vif;
243 struct fq *fq = &local->fq;
244 struct ps_data *ps = NULL;
245 struct txq_info *txqi;
246 struct sta_info *sta;
247 int i;
248
249 local_bh_disable();
250 spin_lock(&fq->lock);
251
252 if (sdata->vif.type == NL80211_IFTYPE_AP)
253 ps = &sdata->bss->ps;
254
255 sdata->vif.txqs_stopped[ac] = false;
256
257 list_for_each_entry_rcu(sta, &local->sta_list, list) {
258 if (sdata != sta->sdata)
259 continue;
260
261 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
262 struct ieee80211_txq *txq = sta->sta.txq[i];
263
264 if (!txq)
265 continue;
266
267 txqi = to_txq_info(txq);
268
269 if (ac != txq->ac)
270 continue;
271
272 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
273 &txqi->flags))
274 continue;
275
276 spin_unlock(&fq->lock);
277 drv_wake_tx_queue(local, txqi);
278 spin_lock(&fq->lock);
279 }
280 }
281
282 if (!vif->txq)
283 goto out;
284
285 txqi = to_txq_info(vif->txq);
286
287 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
288 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
289 goto out;
290
291 spin_unlock(&fq->lock);
292
293 drv_wake_tx_queue(local, txqi);
294 local_bh_enable();
295 return;
296out:
297 spin_unlock(&fq->lock);
298 local_bh_enable();
299}
300
301static void
302__releases(&local->queue_stop_reason_lock)
303__acquires(&local->queue_stop_reason_lock)
304_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
305{
306 struct ieee80211_sub_if_data *sdata;
307 int n_acs = IEEE80211_NUM_ACS;
308 int i;
309
310 rcu_read_lock();
311
312 if (local->hw.queues < IEEE80211_NUM_ACS)
313 n_acs = 1;
314
315 for (i = 0; i < local->hw.queues; i++) {
316 if (local->queue_stop_reasons[i])
317 continue;
318
319 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
320 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
321 int ac;
322
323 for (ac = 0; ac < n_acs; ac++) {
324 int ac_queue = sdata->vif.hw_queue[ac];
325
326 if (ac_queue == i ||
327 sdata->vif.cab_queue == i)
328 __ieee80211_wake_txqs(sdata, ac);
329 }
330 }
331 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
332 }
333
334 rcu_read_unlock();
335}
336
337void ieee80211_wake_txqs(unsigned long data)
338{
339 struct ieee80211_local *local = (struct ieee80211_local *)data;
340 unsigned long flags;
341
342 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
343 _ieee80211_wake_txqs(local, &flags);
344 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
345}
346
347void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
348{
349 struct ieee80211_sub_if_data *sdata;
350 int n_acs = IEEE80211_NUM_ACS;
351
352 if (local->ops->wake_tx_queue)
353 return;
354
355 if (local->hw.queues < IEEE80211_NUM_ACS)
356 n_acs = 1;
357
358 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
359 int ac;
360
361 if (!sdata->dev)
362 continue;
363
364 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
365 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
366 continue;
367
368 for (ac = 0; ac < n_acs; ac++) {
369 int ac_queue = sdata->vif.hw_queue[ac];
370
371 if (ac_queue == queue ||
372 (sdata->vif.cab_queue == queue &&
373 local->queue_stop_reasons[ac_queue] == 0 &&
374 skb_queue_empty(&local->pending[ac_queue])))
375 netif_wake_subqueue(sdata->dev, ac);
376 }
377 }
378}
379
380static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
381 enum queue_stop_reason reason,
382 bool refcounted,
383 unsigned long *flags)
384{
385 struct ieee80211_local *local = hw_to_local(hw);
386
387 trace_wake_queue(local, queue, reason);
388
389 if (WARN_ON(queue >= hw->queues))
390 return;
391
392 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
393 return;
394
395 if (!refcounted) {
396 local->q_stop_reasons[queue][reason] = 0;
397 } else {
398 local->q_stop_reasons[queue][reason]--;
399 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
400 local->q_stop_reasons[queue][reason] = 0;
401 }
402
403 if (local->q_stop_reasons[queue][reason] == 0)
404 __clear_bit(reason, &local->queue_stop_reasons[queue]);
405
406 if (local->queue_stop_reasons[queue] != 0)
407
408 return;
409
410 if (skb_queue_empty(&local->pending[queue])) {
411 rcu_read_lock();
412 ieee80211_propagate_queue_wake(local, queue);
413 rcu_read_unlock();
414 } else
415 tasklet_schedule(&local->tx_pending_tasklet);
416
417
418
419
420
421
422
423
424 if (local->ops->wake_tx_queue) {
425 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
426 tasklet_schedule(&local->wake_txqs_tasklet);
427 else
428 _ieee80211_wake_txqs(local, flags);
429 }
430}
431
432void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
433 enum queue_stop_reason reason,
434 bool refcounted)
435{
436 struct ieee80211_local *local = hw_to_local(hw);
437 unsigned long flags;
438
439 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
440 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
441 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
442}
443
444void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
445{
446 ieee80211_wake_queue_by_reason(hw, queue,
447 IEEE80211_QUEUE_STOP_REASON_DRIVER,
448 false);
449}
450EXPORT_SYMBOL(ieee80211_wake_queue);
451
452static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
453 enum queue_stop_reason reason,
454 bool refcounted)
455{
456 struct ieee80211_local *local = hw_to_local(hw);
457 struct ieee80211_sub_if_data *sdata;
458 int n_acs = IEEE80211_NUM_ACS;
459
460 trace_stop_queue(local, queue, reason);
461
462 if (WARN_ON(queue >= hw->queues))
463 return;
464
465 if (!refcounted)
466 local->q_stop_reasons[queue][reason] = 1;
467 else
468 local->q_stop_reasons[queue][reason]++;
469
470 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
471 return;
472
473 if (local->hw.queues < IEEE80211_NUM_ACS)
474 n_acs = 1;
475
476 rcu_read_lock();
477 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
478 int ac;
479
480 if (!sdata->dev)
481 continue;
482
483 for (ac = 0; ac < n_acs; ac++) {
484 if (sdata->vif.hw_queue[ac] == queue ||
485 sdata->vif.cab_queue == queue) {
486 if (!local->ops->wake_tx_queue) {
487 netif_stop_subqueue(sdata->dev, ac);
488 continue;
489 }
490 spin_lock(&local->fq.lock);
491 sdata->vif.txqs_stopped[ac] = true;
492 spin_unlock(&local->fq.lock);
493 }
494 }
495 }
496 rcu_read_unlock();
497}
498
499void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
500 enum queue_stop_reason reason,
501 bool refcounted)
502{
503 struct ieee80211_local *local = hw_to_local(hw);
504 unsigned long flags;
505
506 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
507 __ieee80211_stop_queue(hw, queue, reason, refcounted);
508 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
509}
510
511void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
512{
513 ieee80211_stop_queue_by_reason(hw, queue,
514 IEEE80211_QUEUE_STOP_REASON_DRIVER,
515 false);
516}
517EXPORT_SYMBOL(ieee80211_stop_queue);
518
519void ieee80211_add_pending_skb(struct ieee80211_local *local,
520 struct sk_buff *skb)
521{
522 struct ieee80211_hw *hw = &local->hw;
523 unsigned long flags;
524 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
525 int queue = info->hw_queue;
526
527 if (WARN_ON(!info->control.vif)) {
528 ieee80211_free_txskb(&local->hw, skb);
529 return;
530 }
531
532 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
533 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
534 false);
535 __skb_queue_tail(&local->pending[queue], skb);
536 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
537 false, &flags);
538 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
539}
540
541void ieee80211_add_pending_skbs(struct ieee80211_local *local,
542 struct sk_buff_head *skbs)
543{
544 struct ieee80211_hw *hw = &local->hw;
545 struct sk_buff *skb;
546 unsigned long flags;
547 int queue, i;
548
549 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
550 while ((skb = skb_dequeue(skbs))) {
551 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
552
553 if (WARN_ON(!info->control.vif)) {
554 ieee80211_free_txskb(&local->hw, skb);
555 continue;
556 }
557
558 queue = info->hw_queue;
559
560 __ieee80211_stop_queue(hw, queue,
561 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
562 false);
563
564 __skb_queue_tail(&local->pending[queue], skb);
565 }
566
567 for (i = 0; i < hw->queues; i++)
568 __ieee80211_wake_queue(hw, i,
569 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
570 false, &flags);
571 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
572}
573
574void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
575 unsigned long queues,
576 enum queue_stop_reason reason,
577 bool refcounted)
578{
579 struct ieee80211_local *local = hw_to_local(hw);
580 unsigned long flags;
581 int i;
582
583 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
584
585 for_each_set_bit(i, &queues, hw->queues)
586 __ieee80211_stop_queue(hw, i, reason, refcounted);
587
588 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
589}
590
591void ieee80211_stop_queues(struct ieee80211_hw *hw)
592{
593 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
594 IEEE80211_QUEUE_STOP_REASON_DRIVER,
595 false);
596}
597EXPORT_SYMBOL(ieee80211_stop_queues);
598
599int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
600{
601 struct ieee80211_local *local = hw_to_local(hw);
602 unsigned long flags;
603 int ret;
604
605 if (WARN_ON(queue >= hw->queues))
606 return true;
607
608 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
609 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
610 &local->queue_stop_reasons[queue]);
611 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
612 return ret;
613}
614EXPORT_SYMBOL(ieee80211_queue_stopped);
615
616void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
617 unsigned long queues,
618 enum queue_stop_reason reason,
619 bool refcounted)
620{
621 struct ieee80211_local *local = hw_to_local(hw);
622 unsigned long flags;
623 int i;
624
625 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
626
627 for_each_set_bit(i, &queues, hw->queues)
628 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
629
630 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
631}
632
633void ieee80211_wake_queues(struct ieee80211_hw *hw)
634{
635 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
636 IEEE80211_QUEUE_STOP_REASON_DRIVER,
637 false);
638}
639EXPORT_SYMBOL(ieee80211_wake_queues);
640
641static unsigned int
642ieee80211_get_vif_queues(struct ieee80211_local *local,
643 struct ieee80211_sub_if_data *sdata)
644{
645 unsigned int queues;
646
647 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
648 int ac;
649
650 queues = 0;
651
652 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
653 queues |= BIT(sdata->vif.hw_queue[ac]);
654 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
655 queues |= BIT(sdata->vif.cab_queue);
656 } else {
657
658 queues = BIT(local->hw.queues) - 1;
659 }
660
661 return queues;
662}
663
664void __ieee80211_flush_queues(struct ieee80211_local *local,
665 struct ieee80211_sub_if_data *sdata,
666 unsigned int queues, bool drop)
667{
668 if (!local->ops->flush)
669 return;
670
671
672
673
674
675 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
676 queues = ieee80211_get_vif_queues(local, sdata);
677
678 ieee80211_stop_queues_by_reason(&local->hw, queues,
679 IEEE80211_QUEUE_STOP_REASON_FLUSH,
680 false);
681
682 drv_flush(local, sdata, queues, drop);
683
684 ieee80211_wake_queues_by_reason(&local->hw, queues,
685 IEEE80211_QUEUE_STOP_REASON_FLUSH,
686 false);
687}
688
689void ieee80211_flush_queues(struct ieee80211_local *local,
690 struct ieee80211_sub_if_data *sdata, bool drop)
691{
692 __ieee80211_flush_queues(local, sdata, 0, drop);
693}
694
695void ieee80211_stop_vif_queues(struct ieee80211_local *local,
696 struct ieee80211_sub_if_data *sdata,
697 enum queue_stop_reason reason)
698{
699 ieee80211_stop_queues_by_reason(&local->hw,
700 ieee80211_get_vif_queues(local, sdata),
701 reason, true);
702}
703
704void ieee80211_wake_vif_queues(struct ieee80211_local *local,
705 struct ieee80211_sub_if_data *sdata,
706 enum queue_stop_reason reason)
707{
708 ieee80211_wake_queues_by_reason(&local->hw,
709 ieee80211_get_vif_queues(local, sdata),
710 reason, true);
711}
712
713static void __iterate_interfaces(struct ieee80211_local *local,
714 u32 iter_flags,
715 void (*iterator)(void *data, u8 *mac,
716 struct ieee80211_vif *vif),
717 void *data)
718{
719 struct ieee80211_sub_if_data *sdata;
720 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
721
722 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
723 switch (sdata->vif.type) {
724 case NL80211_IFTYPE_MONITOR:
725 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
726 continue;
727 break;
728 case NL80211_IFTYPE_AP_VLAN:
729 continue;
730 default:
731 break;
732 }
733 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
734 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
735 continue;
736 if (ieee80211_sdata_running(sdata) || !active_only)
737 iterator(data, sdata->vif.addr,
738 &sdata->vif);
739 }
740
741 sdata = rcu_dereference_check(local->monitor_sdata,
742 lockdep_is_held(&local->iflist_mtx) ||
743 lockdep_rtnl_is_held());
744 if (sdata &&
745 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
746 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
747 iterator(data, sdata->vif.addr, &sdata->vif);
748}
749
750void ieee80211_iterate_interfaces(
751 struct ieee80211_hw *hw, u32 iter_flags,
752 void (*iterator)(void *data, u8 *mac,
753 struct ieee80211_vif *vif),
754 void *data)
755{
756 struct ieee80211_local *local = hw_to_local(hw);
757
758 mutex_lock(&local->iflist_mtx);
759 __iterate_interfaces(local, iter_flags, iterator, data);
760 mutex_unlock(&local->iflist_mtx);
761}
762EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
763
764void ieee80211_iterate_active_interfaces_atomic(
765 struct ieee80211_hw *hw, u32 iter_flags,
766 void (*iterator)(void *data, u8 *mac,
767 struct ieee80211_vif *vif),
768 void *data)
769{
770 struct ieee80211_local *local = hw_to_local(hw);
771
772 rcu_read_lock();
773 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
774 iterator, data);
775 rcu_read_unlock();
776}
777EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
778
779void ieee80211_iterate_active_interfaces_rtnl(
780 struct ieee80211_hw *hw, u32 iter_flags,
781 void (*iterator)(void *data, u8 *mac,
782 struct ieee80211_vif *vif),
783 void *data)
784{
785 struct ieee80211_local *local = hw_to_local(hw);
786
787 ASSERT_RTNL();
788
789 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
790 iterator, data);
791}
792EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
793
794static void __iterate_stations(struct ieee80211_local *local,
795 void (*iterator)(void *data,
796 struct ieee80211_sta *sta),
797 void *data)
798{
799 struct sta_info *sta;
800
801 list_for_each_entry_rcu(sta, &local->sta_list, list) {
802 if (!sta->uploaded)
803 continue;
804
805 iterator(data, &sta->sta);
806 }
807}
808
809void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
810 void (*iterator)(void *data,
811 struct ieee80211_sta *sta),
812 void *data)
813{
814 struct ieee80211_local *local = hw_to_local(hw);
815
816 rcu_read_lock();
817 __iterate_stations(local, iterator, data);
818 rcu_read_unlock();
819}
820EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
821
822struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
823{
824 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
825
826 if (!ieee80211_sdata_running(sdata) ||
827 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
828 return NULL;
829 return &sdata->vif;
830}
831EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
832
833struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
834{
835 struct ieee80211_sub_if_data *sdata;
836
837 if (!vif)
838 return NULL;
839
840 sdata = vif_to_sdata(vif);
841
842 if (!ieee80211_sdata_running(sdata) ||
843 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
844 return NULL;
845
846 return &sdata->wdev;
847}
848EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
849
850
851
852
853
854
855
856
857
858
859static bool ieee80211_can_queue_work(struct ieee80211_local *local)
860{
861 if (local->quiescing || (local->suspended && !local->resuming)) {
862 pr_warn("queueing ieee80211 work while going to suspend\n");
863 return false;
864 }
865
866 return true;
867}
868
869void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
870{
871 struct ieee80211_local *local = hw_to_local(hw);
872
873 if (!ieee80211_can_queue_work(local))
874 return;
875
876 queue_work(local->workqueue, work);
877}
878EXPORT_SYMBOL(ieee80211_queue_work);
879
880void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
881 struct delayed_work *dwork,
882 unsigned long delay)
883{
884 struct ieee80211_local *local = hw_to_local(hw);
885
886 if (!ieee80211_can_queue_work(local))
887 return;
888
889 queue_delayed_work(local->workqueue, dwork, delay);
890}
891EXPORT_SYMBOL(ieee80211_queue_delayed_work);
892
893static void ieee80211_parse_extension_element(u32 *crc,
894 const struct element *elem,
895 struct ieee802_11_elems *elems)
896{
897 const void *data = elem->data + 1;
898 u8 len = elem->datalen - 1;
899
900 switch (elem->data[0]) {
901 case WLAN_EID_EXT_HE_MU_EDCA:
902 if (len == sizeof(*elems->mu_edca_param_set)) {
903 elems->mu_edca_param_set = data;
904 if (crc)
905 *crc = crc32_be(*crc, (void *)elem,
906 elem->datalen + 2);
907 }
908 break;
909 case WLAN_EID_EXT_HE_CAPABILITY:
910 elems->he_cap = data;
911 elems->he_cap_len = len;
912 break;
913 case WLAN_EID_EXT_HE_OPERATION:
914 if (len >= sizeof(*elems->he_operation) &&
915 len == ieee80211_he_oper_size(data) - 1) {
916 if (crc)
917 *crc = crc32_be(*crc, (void *)elem,
918 elem->datalen + 2);
919 elems->he_operation = data;
920 }
921 break;
922 case WLAN_EID_EXT_UORA:
923 if (len == 1)
924 elems->uora_element = data;
925 break;
926 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
927 if (len == 3)
928 elems->max_channel_switch_time = data;
929 break;
930 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
931 if (len == sizeof(*elems->mbssid_config_ie))
932 elems->mbssid_config_ie = data;
933 break;
934 case WLAN_EID_EXT_HE_SPR:
935 if (len >= sizeof(*elems->he_spr) &&
936 len >= ieee80211_he_spr_size(data))
937 elems->he_spr = data;
938 break;
939 case WLAN_EID_EXT_HE_6GHZ_CAPA:
940 if (len == sizeof(*elems->he_6ghz_capa))
941 elems->he_6ghz_capa = data;
942 break;
943 }
944}
945
946static u32
947_ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
948 struct ieee802_11_elems *elems,
949 u64 filter, u32 crc,
950 const struct element *check_inherit)
951{
952 const struct element *elem;
953 bool calc_crc = filter != 0;
954 DECLARE_BITMAP(seen_elems, 256);
955 const u8 *ie;
956
957 bitmap_zero(seen_elems, 256);
958
959 for_each_element(elem, start, len) {
960 bool elem_parse_failed;
961 u8 id = elem->id;
962 u8 elen = elem->datalen;
963 const u8 *pos = elem->data;
964
965 if (check_inherit &&
966 !cfg80211_is_element_inherited(elem,
967 check_inherit))
968 continue;
969
970 switch (id) {
971 case WLAN_EID_SSID:
972 case WLAN_EID_SUPP_RATES:
973 case WLAN_EID_FH_PARAMS:
974 case WLAN_EID_DS_PARAMS:
975 case WLAN_EID_CF_PARAMS:
976 case WLAN_EID_TIM:
977 case WLAN_EID_IBSS_PARAMS:
978 case WLAN_EID_CHALLENGE:
979 case WLAN_EID_RSN:
980 case WLAN_EID_ERP_INFO:
981 case WLAN_EID_EXT_SUPP_RATES:
982 case WLAN_EID_HT_CAPABILITY:
983 case WLAN_EID_HT_OPERATION:
984 case WLAN_EID_VHT_CAPABILITY:
985 case WLAN_EID_VHT_OPERATION:
986 case WLAN_EID_MESH_ID:
987 case WLAN_EID_MESH_CONFIG:
988 case WLAN_EID_PEER_MGMT:
989 case WLAN_EID_PREQ:
990 case WLAN_EID_PREP:
991 case WLAN_EID_PERR:
992 case WLAN_EID_RANN:
993 case WLAN_EID_CHANNEL_SWITCH:
994 case WLAN_EID_EXT_CHANSWITCH_ANN:
995 case WLAN_EID_COUNTRY:
996 case WLAN_EID_PWR_CONSTRAINT:
997 case WLAN_EID_TIMEOUT_INTERVAL:
998 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
999 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1000 case WLAN_EID_CHAN_SWITCH_PARAM:
1001 case WLAN_EID_EXT_CAPABILITY:
1002 case WLAN_EID_CHAN_SWITCH_TIMING:
1003 case WLAN_EID_LINK_ID:
1004 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1005 case WLAN_EID_RSNX:
1006
1007
1008
1009
1010 if (test_bit(id, seen_elems)) {
1011 elems->parse_error = true;
1012 continue;
1013 }
1014 break;
1015 }
1016
1017 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1018 crc = crc32_be(crc, pos - 2, elen + 2);
1019
1020 elem_parse_failed = false;
1021
1022 switch (id) {
1023 case WLAN_EID_LINK_ID:
1024 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
1025 elem_parse_failed = true;
1026 break;
1027 }
1028 elems->lnk_id = (void *)(pos - 2);
1029 break;
1030 case WLAN_EID_CHAN_SWITCH_TIMING:
1031 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
1032 elem_parse_failed = true;
1033 break;
1034 }
1035 elems->ch_sw_timing = (void *)pos;
1036 break;
1037 case WLAN_EID_EXT_CAPABILITY:
1038 elems->ext_capab = pos;
1039 elems->ext_capab_len = elen;
1040 break;
1041 case WLAN_EID_SSID:
1042 elems->ssid = pos;
1043 elems->ssid_len = elen;
1044 break;
1045 case WLAN_EID_SUPP_RATES:
1046 elems->supp_rates = pos;
1047 elems->supp_rates_len = elen;
1048 break;
1049 case WLAN_EID_DS_PARAMS:
1050 if (elen >= 1)
1051 elems->ds_params = pos;
1052 else
1053 elem_parse_failed = true;
1054 break;
1055 case WLAN_EID_TIM:
1056 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1057 elems->tim = (void *)pos;
1058 elems->tim_len = elen;
1059 } else
1060 elem_parse_failed = true;
1061 break;
1062 case WLAN_EID_CHALLENGE:
1063 elems->challenge = pos;
1064 elems->challenge_len = elen;
1065 break;
1066 case WLAN_EID_VENDOR_SPECIFIC:
1067 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1068 pos[2] == 0xf2) {
1069
1070
1071 if (calc_crc)
1072 crc = crc32_be(crc, pos - 2, elen + 2);
1073
1074 if (elen >= 5 && pos[3] == 2) {
1075
1076 if (pos[4] == 0) {
1077 elems->wmm_info = pos;
1078 elems->wmm_info_len = elen;
1079 } else if (pos[4] == 1) {
1080 elems->wmm_param = pos;
1081 elems->wmm_param_len = elen;
1082 }
1083 }
1084 }
1085 break;
1086 case WLAN_EID_RSN:
1087 elems->rsn = pos;
1088 elems->rsn_len = elen;
1089 break;
1090 case WLAN_EID_ERP_INFO:
1091 if (elen >= 1)
1092 elems->erp_info = pos;
1093 else
1094 elem_parse_failed = true;
1095 break;
1096 case WLAN_EID_EXT_SUPP_RATES:
1097 elems->ext_supp_rates = pos;
1098 elems->ext_supp_rates_len = elen;
1099 break;
1100 case WLAN_EID_HT_CAPABILITY:
1101 if (elen >= sizeof(struct ieee80211_ht_cap))
1102 elems->ht_cap_elem = (void *)pos;
1103 else
1104 elem_parse_failed = true;
1105 break;
1106 case WLAN_EID_HT_OPERATION:
1107 if (elen >= sizeof(struct ieee80211_ht_operation))
1108 elems->ht_operation = (void *)pos;
1109 else
1110 elem_parse_failed = true;
1111 break;
1112 case WLAN_EID_VHT_CAPABILITY:
1113 if (elen >= sizeof(struct ieee80211_vht_cap))
1114 elems->vht_cap_elem = (void *)pos;
1115 else
1116 elem_parse_failed = true;
1117 break;
1118 case WLAN_EID_VHT_OPERATION:
1119 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1120 elems->vht_operation = (void *)pos;
1121 if (calc_crc)
1122 crc = crc32_be(crc, pos - 2, elen + 2);
1123 break;
1124 }
1125 elem_parse_failed = true;
1126 break;
1127 case WLAN_EID_OPMODE_NOTIF:
1128 if (elen > 0) {
1129 elems->opmode_notif = pos;
1130 if (calc_crc)
1131 crc = crc32_be(crc, pos - 2, elen + 2);
1132 break;
1133 }
1134 elem_parse_failed = true;
1135 break;
1136 case WLAN_EID_MESH_ID:
1137 elems->mesh_id = pos;
1138 elems->mesh_id_len = elen;
1139 break;
1140 case WLAN_EID_MESH_CONFIG:
1141 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1142 elems->mesh_config = (void *)pos;
1143 else
1144 elem_parse_failed = true;
1145 break;
1146 case WLAN_EID_PEER_MGMT:
1147 elems->peering = pos;
1148 elems->peering_len = elen;
1149 break;
1150 case WLAN_EID_MESH_AWAKE_WINDOW:
1151 if (elen >= 2)
1152 elems->awake_window = (void *)pos;
1153 break;
1154 case WLAN_EID_PREQ:
1155 elems->preq = pos;
1156 elems->preq_len = elen;
1157 break;
1158 case WLAN_EID_PREP:
1159 elems->prep = pos;
1160 elems->prep_len = elen;
1161 break;
1162 case WLAN_EID_PERR:
1163 elems->perr = pos;
1164 elems->perr_len = elen;
1165 break;
1166 case WLAN_EID_RANN:
1167 if (elen >= sizeof(struct ieee80211_rann_ie))
1168 elems->rann = (void *)pos;
1169 else
1170 elem_parse_failed = true;
1171 break;
1172 case WLAN_EID_CHANNEL_SWITCH:
1173 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1174 elem_parse_failed = true;
1175 break;
1176 }
1177 elems->ch_switch_ie = (void *)pos;
1178 break;
1179 case WLAN_EID_EXT_CHANSWITCH_ANN:
1180 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1181 elem_parse_failed = true;
1182 break;
1183 }
1184 elems->ext_chansw_ie = (void *)pos;
1185 break;
1186 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1187 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1188 elem_parse_failed = true;
1189 break;
1190 }
1191 elems->sec_chan_offs = (void *)pos;
1192 break;
1193 case WLAN_EID_CHAN_SWITCH_PARAM:
1194 if (elen !=
1195 sizeof(*elems->mesh_chansw_params_ie)) {
1196 elem_parse_failed = true;
1197 break;
1198 }
1199 elems->mesh_chansw_params_ie = (void *)pos;
1200 break;
1201 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1202 if (!action ||
1203 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1204 elem_parse_failed = true;
1205 break;
1206 }
1207 elems->wide_bw_chansw_ie = (void *)pos;
1208 break;
1209 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1210 if (action) {
1211 elem_parse_failed = true;
1212 break;
1213 }
1214
1215
1216
1217
1218
1219 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1220 pos, elen);
1221 if (ie) {
1222 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1223 elems->wide_bw_chansw_ie =
1224 (void *)(ie + 2);
1225 else
1226 elem_parse_failed = true;
1227 }
1228 break;
1229 case WLAN_EID_COUNTRY:
1230 elems->country_elem = pos;
1231 elems->country_elem_len = elen;
1232 break;
1233 case WLAN_EID_PWR_CONSTRAINT:
1234 if (elen != 1) {
1235 elem_parse_failed = true;
1236 break;
1237 }
1238 elems->pwr_constr_elem = pos;
1239 break;
1240 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1241
1242
1243
1244
1245
1246 if (elen < 4) {
1247 elem_parse_failed = true;
1248 break;
1249 }
1250
1251 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1252 pos[2] != 0x96 || pos[3] != 0x00)
1253 break;
1254
1255 if (elen != 6) {
1256 elem_parse_failed = true;
1257 break;
1258 }
1259
1260 if (calc_crc)
1261 crc = crc32_be(crc, pos - 2, elen + 2);
1262
1263 elems->cisco_dtpc_elem = pos;
1264 break;
1265 case WLAN_EID_ADDBA_EXT:
1266 if (elen != sizeof(struct ieee80211_addba_ext_ie)) {
1267 elem_parse_failed = true;
1268 break;
1269 }
1270 elems->addba_ext_ie = (void *)pos;
1271 break;
1272 case WLAN_EID_TIMEOUT_INTERVAL:
1273 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1274 elems->timeout_int = (void *)pos;
1275 else
1276 elem_parse_failed = true;
1277 break;
1278 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1279 if (elen >= sizeof(*elems->max_idle_period_ie))
1280 elems->max_idle_period_ie = (void *)pos;
1281 break;
1282 case WLAN_EID_RSNX:
1283 elems->rsnx = pos;
1284 elems->rsnx_len = elen;
1285 break;
1286 case WLAN_EID_EXTENSION:
1287 ieee80211_parse_extension_element(calc_crc ?
1288 &crc : NULL,
1289 elem, elems);
1290 break;
1291 default:
1292 break;
1293 }
1294
1295 if (elem_parse_failed)
1296 elems->parse_error = true;
1297 else
1298 __set_bit(id, seen_elems);
1299 }
1300
1301 if (!for_each_element_completed(elem, start, len))
1302 elems->parse_error = true;
1303
1304 return crc;
1305}
1306
1307static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1308 struct ieee802_11_elems *elems,
1309 u8 *transmitter_bssid,
1310 u8 *bss_bssid,
1311 u8 *nontransmitted_profile)
1312{
1313 const struct element *elem, *sub;
1314 size_t profile_len = 0;
1315 bool found = false;
1316
1317 if (!bss_bssid || !transmitter_bssid)
1318 return profile_len;
1319
1320 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1321 if (elem->datalen < 2)
1322 continue;
1323
1324 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1325 u8 new_bssid[ETH_ALEN];
1326 const u8 *index;
1327
1328 if (sub->id != 0 || sub->datalen < 4) {
1329
1330 continue;
1331 }
1332
1333 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1334 sub->data[1] != 2) {
1335
1336
1337
1338
1339
1340 continue;
1341 }
1342
1343 memset(nontransmitted_profile, 0, len);
1344 profile_len = cfg80211_merge_profile(start, len,
1345 elem,
1346 sub,
1347 nontransmitted_profile,
1348 len);
1349
1350
1351 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1352 nontransmitted_profile,
1353 profile_len);
1354 if (!index || index[1] < 1 || index[2] == 0) {
1355
1356 continue;
1357 }
1358
1359 cfg80211_gen_new_bssid(transmitter_bssid,
1360 elem->data[0],
1361 index[2],
1362 new_bssid);
1363 if (ether_addr_equal(new_bssid, bss_bssid)) {
1364 found = true;
1365 elems->bssid_index_len = index[1];
1366 elems->bssid_index = (void *)&index[2];
1367 break;
1368 }
1369 }
1370 }
1371
1372 return found ? profile_len : 0;
1373}
1374
1375u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1376 struct ieee802_11_elems *elems,
1377 u64 filter, u32 crc, u8 *transmitter_bssid,
1378 u8 *bss_bssid)
1379{
1380 const struct element *non_inherit = NULL;
1381 u8 *nontransmitted_profile;
1382 int nontransmitted_profile_len = 0;
1383
1384 memset(elems, 0, sizeof(*elems));
1385 elems->ie_start = start;
1386 elems->total_len = len;
1387
1388 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1389 if (nontransmitted_profile) {
1390 nontransmitted_profile_len =
1391 ieee802_11_find_bssid_profile(start, len, elems,
1392 transmitter_bssid,
1393 bss_bssid,
1394 nontransmitted_profile);
1395 non_inherit =
1396 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1397 nontransmitted_profile,
1398 nontransmitted_profile_len);
1399 }
1400
1401 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1402 crc, non_inherit);
1403
1404
1405 if (nontransmitted_profile_len)
1406 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1407 nontransmitted_profile_len,
1408 action, elems, 0, 0, NULL);
1409
1410 if (elems->tim && !elems->parse_error) {
1411 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1412
1413 elems->dtim_period = tim_ie->dtim_period;
1414 elems->dtim_count = tim_ie->dtim_count;
1415 }
1416
1417
1418 if (elems->bssid_index &&
1419 elems->bssid_index_len >=
1420 offsetofend(struct ieee80211_bssid_index, dtim_period))
1421 elems->dtim_period = elems->bssid_index->dtim_period;
1422
1423 if (elems->bssid_index &&
1424 elems->bssid_index_len >=
1425 offsetofend(struct ieee80211_bssid_index, dtim_count))
1426 elems->dtim_count = elems->bssid_index->dtim_count;
1427
1428 kfree(nontransmitted_profile);
1429
1430 return crc;
1431}
1432
1433void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1434 struct ieee80211_tx_queue_params
1435 *qparam, int ac)
1436{
1437 struct ieee80211_chanctx_conf *chanctx_conf;
1438 const struct ieee80211_reg_rule *rrule;
1439 const struct ieee80211_wmm_ac *wmm_ac;
1440 u16 center_freq = 0;
1441
1442 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1443 sdata->vif.type != NL80211_IFTYPE_STATION)
1444 return;
1445
1446 rcu_read_lock();
1447 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1448 if (chanctx_conf)
1449 center_freq = chanctx_conf->def.chan->center_freq;
1450
1451 if (!center_freq) {
1452 rcu_read_unlock();
1453 return;
1454 }
1455
1456 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1457
1458 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1459 rcu_read_unlock();
1460 return;
1461 }
1462
1463 if (sdata->vif.type == NL80211_IFTYPE_AP)
1464 wmm_ac = &rrule->wmm_rule.ap[ac];
1465 else
1466 wmm_ac = &rrule->wmm_rule.client[ac];
1467 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1468 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1469 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1470 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1471 rcu_read_unlock();
1472}
1473
1474void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1475 bool bss_notify, bool enable_qos)
1476{
1477 struct ieee80211_local *local = sdata->local;
1478 struct ieee80211_tx_queue_params qparam;
1479 struct ieee80211_chanctx_conf *chanctx_conf;
1480 int ac;
1481 bool use_11b;
1482 bool is_ocb;
1483 int aCWmin, aCWmax;
1484
1485 if (!local->ops->conf_tx)
1486 return;
1487
1488 if (local->hw.queues < IEEE80211_NUM_ACS)
1489 return;
1490
1491 memset(&qparam, 0, sizeof(qparam));
1492
1493 rcu_read_lock();
1494 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1495 use_11b = (chanctx_conf &&
1496 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1497 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1498 rcu_read_unlock();
1499
1500 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1501
1502
1503 aCWmax = 1023;
1504 if (use_11b)
1505 aCWmin = 31;
1506 else
1507 aCWmin = 15;
1508
1509
1510 qparam.cw_max = aCWmax;
1511 qparam.cw_min = aCWmin;
1512 qparam.txop = 0;
1513 qparam.aifs = 2;
1514
1515 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1516
1517 if (enable_qos) {
1518 switch (ac) {
1519 case IEEE80211_AC_BK:
1520 qparam.cw_max = aCWmax;
1521 qparam.cw_min = aCWmin;
1522 qparam.txop = 0;
1523 if (is_ocb)
1524 qparam.aifs = 9;
1525 else
1526 qparam.aifs = 7;
1527 break;
1528
1529 default:
1530 case IEEE80211_AC_BE:
1531 qparam.cw_max = aCWmax;
1532 qparam.cw_min = aCWmin;
1533 qparam.txop = 0;
1534 if (is_ocb)
1535 qparam.aifs = 6;
1536 else
1537 qparam.aifs = 3;
1538 break;
1539 case IEEE80211_AC_VI:
1540 qparam.cw_max = aCWmin;
1541 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1542 if (is_ocb)
1543 qparam.txop = 0;
1544 else if (use_11b)
1545 qparam.txop = 6016/32;
1546 else
1547 qparam.txop = 3008/32;
1548
1549 if (is_ocb)
1550 qparam.aifs = 3;
1551 else
1552 qparam.aifs = 2;
1553 break;
1554 case IEEE80211_AC_VO:
1555 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1556 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1557 if (is_ocb)
1558 qparam.txop = 0;
1559 else if (use_11b)
1560 qparam.txop = 3264/32;
1561 else
1562 qparam.txop = 1504/32;
1563 qparam.aifs = 2;
1564 break;
1565 }
1566 }
1567 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1568
1569 qparam.uapsd = false;
1570
1571 sdata->tx_conf[ac] = qparam;
1572 drv_conf_tx(local, sdata, ac, &qparam);
1573 }
1574
1575 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1576 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1577 sdata->vif.type != NL80211_IFTYPE_NAN) {
1578 sdata->vif.bss_conf.qos = enable_qos;
1579 if (bss_notify)
1580 ieee80211_bss_info_change_notify(sdata,
1581 BSS_CHANGED_QOS);
1582 }
1583}
1584
1585void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1586 u16 transaction, u16 auth_alg, u16 status,
1587 const u8 *extra, size_t extra_len, const u8 *da,
1588 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1589 u32 tx_flags)
1590{
1591 struct ieee80211_local *local = sdata->local;
1592 struct sk_buff *skb;
1593 struct ieee80211_mgmt *mgmt;
1594 int err;
1595
1596
1597 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1598 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1599 if (!skb)
1600 return;
1601
1602 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1603
1604 mgmt = skb_put_zero(skb, 24 + 6);
1605 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1606 IEEE80211_STYPE_AUTH);
1607 memcpy(mgmt->da, da, ETH_ALEN);
1608 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1609 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1610 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1611 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1612 mgmt->u.auth.status_code = cpu_to_le16(status);
1613 if (extra)
1614 skb_put_data(skb, extra, extra_len);
1615
1616 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1617 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1618 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1619 WARN_ON(err);
1620 }
1621
1622 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1623 tx_flags;
1624 ieee80211_tx_skb(sdata, skb);
1625}
1626
1627void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1628 const u8 *da, const u8 *bssid,
1629 u16 stype, u16 reason,
1630 bool send_frame, u8 *frame_buf)
1631{
1632 struct ieee80211_local *local = sdata->local;
1633 struct sk_buff *skb;
1634 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1635
1636
1637 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1638 mgmt->duration = 0;
1639 mgmt->seq_ctrl = 0;
1640 memcpy(mgmt->da, da, ETH_ALEN);
1641 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1642 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1643
1644 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1645
1646 if (send_frame) {
1647 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1648 IEEE80211_DEAUTH_FRAME_LEN);
1649 if (!skb)
1650 return;
1651
1652 skb_reserve(skb, local->hw.extra_tx_headroom);
1653
1654
1655 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1656
1657 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1658 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1659 IEEE80211_SKB_CB(skb)->flags |=
1660 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1661
1662 ieee80211_tx_skb(sdata, skb);
1663 }
1664}
1665
1666static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1667{
1668 if ((end - pos) < 5)
1669 return pos;
1670
1671 *pos++ = WLAN_EID_EXTENSION;
1672 *pos++ = 1 + sizeof(cap);
1673 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1674 memcpy(pos, &cap, sizeof(cap));
1675
1676 return pos + 2;
1677}
1678
1679static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1680 u8 *buffer, size_t buffer_len,
1681 const u8 *ie, size_t ie_len,
1682 enum nl80211_band band,
1683 u32 rate_mask,
1684 struct cfg80211_chan_def *chandef,
1685 size_t *offset, u32 flags)
1686{
1687 struct ieee80211_local *local = sdata->local;
1688 struct ieee80211_supported_band *sband;
1689 const struct ieee80211_sta_he_cap *he_cap;
1690 u8 *pos = buffer, *end = buffer + buffer_len;
1691 size_t noffset;
1692 int supp_rates_len, i;
1693 u8 rates[32];
1694 int num_rates;
1695 int ext_rates_len;
1696 int shift;
1697 u32 rate_flags;
1698 bool have_80mhz = false;
1699
1700 *offset = 0;
1701
1702 sband = local->hw.wiphy->bands[band];
1703 if (WARN_ON_ONCE(!sband))
1704 return 0;
1705
1706 rate_flags = ieee80211_chandef_rate_flags(chandef);
1707 shift = ieee80211_chandef_get_shift(chandef);
1708
1709 num_rates = 0;
1710 for (i = 0; i < sband->n_bitrates; i++) {
1711 if ((BIT(i) & rate_mask) == 0)
1712 continue;
1713 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1714 continue;
1715
1716 rates[num_rates++] =
1717 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1718 (1 << shift) * 5);
1719 }
1720
1721 supp_rates_len = min_t(int, num_rates, 8);
1722
1723 if (end - pos < 2 + supp_rates_len)
1724 goto out_err;
1725 *pos++ = WLAN_EID_SUPP_RATES;
1726 *pos++ = supp_rates_len;
1727 memcpy(pos, rates, supp_rates_len);
1728 pos += supp_rates_len;
1729
1730
1731 if (ie && ie_len) {
1732 static const u8 before_extrates[] = {
1733 WLAN_EID_SSID,
1734 WLAN_EID_SUPP_RATES,
1735 WLAN_EID_REQUEST,
1736 };
1737 noffset = ieee80211_ie_split(ie, ie_len,
1738 before_extrates,
1739 ARRAY_SIZE(before_extrates),
1740 *offset);
1741 if (end - pos < noffset - *offset)
1742 goto out_err;
1743 memcpy(pos, ie + *offset, noffset - *offset);
1744 pos += noffset - *offset;
1745 *offset = noffset;
1746 }
1747
1748 ext_rates_len = num_rates - supp_rates_len;
1749 if (ext_rates_len > 0) {
1750 if (end - pos < 2 + ext_rates_len)
1751 goto out_err;
1752 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1753 *pos++ = ext_rates_len;
1754 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1755 pos += ext_rates_len;
1756 }
1757
1758 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1759 if (end - pos < 3)
1760 goto out_err;
1761 *pos++ = WLAN_EID_DS_PARAMS;
1762 *pos++ = 1;
1763 *pos++ = ieee80211_frequency_to_channel(
1764 chandef->chan->center_freq);
1765 }
1766
1767 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1768 goto done;
1769
1770
1771 if (ie && ie_len) {
1772 static const u8 before_ht[] = {
1773
1774
1775
1776
1777 WLAN_EID_DS_PARAMS,
1778 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1779 };
1780 noffset = ieee80211_ie_split(ie, ie_len,
1781 before_ht, ARRAY_SIZE(before_ht),
1782 *offset);
1783 if (end - pos < noffset - *offset)
1784 goto out_err;
1785 memcpy(pos, ie + *offset, noffset - *offset);
1786 pos += noffset - *offset;
1787 *offset = noffset;
1788 }
1789
1790 if (sband->ht_cap.ht_supported) {
1791 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1792 goto out_err;
1793 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1794 sband->ht_cap.cap);
1795 }
1796
1797
1798 if (ie && ie_len) {
1799 static const u8 before_vht[] = {
1800
1801
1802
1803
1804 WLAN_EID_BSS_COEX_2040,
1805 WLAN_EID_EXT_CAPABILITY,
1806 WLAN_EID_SSID_LIST,
1807 WLAN_EID_CHANNEL_USAGE,
1808 WLAN_EID_INTERWORKING,
1809 WLAN_EID_MESH_ID,
1810
1811 };
1812 noffset = ieee80211_ie_split(ie, ie_len,
1813 before_vht, ARRAY_SIZE(before_vht),
1814 *offset);
1815 if (end - pos < noffset - *offset)
1816 goto out_err;
1817 memcpy(pos, ie + *offset, noffset - *offset);
1818 pos += noffset - *offset;
1819 *offset = noffset;
1820 }
1821
1822
1823 for (i = 0; i < sband->n_channels; i++) {
1824 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1825 IEEE80211_CHAN_NO_80MHZ))
1826 continue;
1827
1828 have_80mhz = true;
1829 break;
1830 }
1831
1832 if (sband->vht_cap.vht_supported && have_80mhz) {
1833 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1834 goto out_err;
1835 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1836 sband->vht_cap.cap);
1837 }
1838
1839
1840 if (ie && ie_len) {
1841 static const u8 before_he[] = {
1842
1843
1844
1845
1846 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1847 WLAN_EID_AP_CSN,
1848
1849 };
1850 noffset = ieee80211_ie_split(ie, ie_len,
1851 before_he, ARRAY_SIZE(before_he),
1852 *offset);
1853 if (end - pos < noffset - *offset)
1854 goto out_err;
1855 memcpy(pos, ie + *offset, noffset - *offset);
1856 pos += noffset - *offset;
1857 *offset = noffset;
1858 }
1859
1860 he_cap = ieee80211_get_he_sta_cap(sband);
1861 if (he_cap) {
1862 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1863 if (!pos)
1864 goto out_err;
1865
1866 if (sband->band == NL80211_BAND_6GHZ) {
1867 enum nl80211_iftype iftype =
1868 ieee80211_vif_type_p2p(&sdata->vif);
1869 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
1870
1871 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
1872 }
1873 }
1874
1875
1876
1877
1878
1879
1880 return pos - buffer;
1881 out_err:
1882 WARN_ONCE(1, "not enough space for preq IEs\n");
1883 done:
1884 return pos - buffer;
1885}
1886
1887int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
1888 size_t buffer_len,
1889 struct ieee80211_scan_ies *ie_desc,
1890 const u8 *ie, size_t ie_len,
1891 u8 bands_used, u32 *rate_masks,
1892 struct cfg80211_chan_def *chandef,
1893 u32 flags)
1894{
1895 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1896 int i;
1897
1898 memset(ie_desc, 0, sizeof(*ie_desc));
1899
1900 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1901 if (bands_used & BIT(i)) {
1902 pos += ieee80211_build_preq_ies_band(sdata,
1903 buffer + pos,
1904 buffer_len - pos,
1905 ie, ie_len, i,
1906 rate_masks[i],
1907 chandef,
1908 &custom_ie_offset,
1909 flags);
1910 ie_desc->ies[i] = buffer + old_pos;
1911 ie_desc->len[i] = pos - old_pos;
1912 old_pos = pos;
1913 }
1914 }
1915
1916
1917 if (ie && ie_len) {
1918 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1919 "not enough space for preq custom IEs\n"))
1920 return pos;
1921 memcpy(buffer + pos, ie + custom_ie_offset,
1922 ie_len - custom_ie_offset);
1923 ie_desc->common_ies = buffer + pos;
1924 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1925 pos += ie_len - custom_ie_offset;
1926 }
1927
1928 return pos;
1929};
1930
1931struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1932 const u8 *src, const u8 *dst,
1933 u32 ratemask,
1934 struct ieee80211_channel *chan,
1935 const u8 *ssid, size_t ssid_len,
1936 const u8 *ie, size_t ie_len,
1937 u32 flags)
1938{
1939 struct ieee80211_local *local = sdata->local;
1940 struct cfg80211_chan_def chandef;
1941 struct sk_buff *skb;
1942 struct ieee80211_mgmt *mgmt;
1943 int ies_len;
1944 u32 rate_masks[NUM_NL80211_BANDS] = {};
1945 struct ieee80211_scan_ies dummy_ie_desc;
1946
1947
1948
1949
1950
1951
1952 chandef.width = sdata->vif.bss_conf.chandef.width;
1953 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
1954 chandef.chan = NULL;
1955 else
1956 chandef.chan = chan;
1957
1958 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1959 100 + ie_len);
1960 if (!skb)
1961 return NULL;
1962
1963 rate_masks[chan->band] = ratemask;
1964 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
1965 skb_tailroom(skb), &dummy_ie_desc,
1966 ie, ie_len, BIT(chan->band),
1967 rate_masks, &chandef, flags);
1968 skb_put(skb, ies_len);
1969
1970 if (dst) {
1971 mgmt = (struct ieee80211_mgmt *) skb->data;
1972 memcpy(mgmt->da, dst, ETH_ALEN);
1973 memcpy(mgmt->bssid, dst, ETH_ALEN);
1974 }
1975
1976 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1977
1978 return skb;
1979}
1980
1981u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1982 struct ieee802_11_elems *elems,
1983 enum nl80211_band band, u32 *basic_rates)
1984{
1985 struct ieee80211_supported_band *sband;
1986 size_t num_rates;
1987 u32 supp_rates, rate_flags;
1988 int i, j, shift;
1989
1990 sband = sdata->local->hw.wiphy->bands[band];
1991 if (WARN_ON(!sband))
1992 return 1;
1993
1994 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1995 shift = ieee80211_vif_get_shift(&sdata->vif);
1996
1997 num_rates = sband->n_bitrates;
1998 supp_rates = 0;
1999 for (i = 0; i < elems->supp_rates_len +
2000 elems->ext_supp_rates_len; i++) {
2001 u8 rate = 0;
2002 int own_rate;
2003 bool is_basic;
2004 if (i < elems->supp_rates_len)
2005 rate = elems->supp_rates[i];
2006 else if (elems->ext_supp_rates)
2007 rate = elems->ext_supp_rates
2008 [i - elems->supp_rates_len];
2009 own_rate = 5 * (rate & 0x7f);
2010 is_basic = !!(rate & 0x80);
2011
2012 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2013 continue;
2014
2015 for (j = 0; j < num_rates; j++) {
2016 int brate;
2017 if ((rate_flags & sband->bitrates[j].flags)
2018 != rate_flags)
2019 continue;
2020
2021 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2022 1 << shift);
2023
2024 if (brate == own_rate) {
2025 supp_rates |= BIT(j);
2026 if (basic_rates && is_basic)
2027 *basic_rates |= BIT(j);
2028 }
2029 }
2030 }
2031 return supp_rates;
2032}
2033
2034void ieee80211_stop_device(struct ieee80211_local *local)
2035{
2036 ieee80211_led_radio(local, false);
2037 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2038
2039 cancel_work_sync(&local->reconfig_filter);
2040
2041 flush_workqueue(local->workqueue);
2042 drv_stop(local);
2043}
2044
2045static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2046 bool aborted)
2047{
2048
2049
2050
2051
2052
2053
2054
2055 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2056
2057
2058
2059
2060
2061 if (aborted)
2062 set_bit(SCAN_ABORTED, &local->scanning);
2063 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2064 flush_delayed_work(&local->scan_work);
2065 }
2066}
2067
2068static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2069{
2070 struct ieee80211_sub_if_data *sdata;
2071 struct ieee80211_chanctx *ctx;
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083 local->resuming = false;
2084 local->suspended = false;
2085 local->in_reconfig = false;
2086
2087 ieee80211_flush_completed_scan(local, true);
2088
2089
2090
2091
2092 ieee80211_sched_scan_end(local);
2093
2094 list_for_each_entry(sdata, &local->interfaces, list)
2095 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2096
2097
2098
2099
2100 mutex_lock(&local->chanctx_mtx);
2101 list_for_each_entry(ctx, &local->chanctx_list, list)
2102 ctx->driver_present = false;
2103 mutex_unlock(&local->chanctx_mtx);
2104
2105 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
2106}
2107
2108static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2109 struct ieee80211_sub_if_data *sdata)
2110{
2111 struct ieee80211_chanctx_conf *conf;
2112 struct ieee80211_chanctx *ctx;
2113
2114 if (!local->use_chanctx)
2115 return;
2116
2117 mutex_lock(&local->chanctx_mtx);
2118 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2119 lockdep_is_held(&local->chanctx_mtx));
2120 if (conf) {
2121 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2122 drv_assign_vif_chanctx(local, sdata, ctx);
2123 }
2124 mutex_unlock(&local->chanctx_mtx);
2125}
2126
2127static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2128{
2129 struct ieee80211_local *local = sdata->local;
2130 struct sta_info *sta;
2131
2132
2133 mutex_lock(&local->sta_mtx);
2134 list_for_each_entry(sta, &local->sta_list, list) {
2135 enum ieee80211_sta_state state;
2136
2137 if (!sta->uploaded || sta->sdata != sdata)
2138 continue;
2139
2140 for (state = IEEE80211_STA_NOTEXIST;
2141 state < sta->sta_state; state++)
2142 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2143 state + 1));
2144 }
2145 mutex_unlock(&local->sta_mtx);
2146}
2147
2148static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2149{
2150 struct cfg80211_nan_func *func, **funcs;
2151 int res, id, i = 0;
2152
2153 res = drv_start_nan(sdata->local, sdata,
2154 &sdata->u.nan.conf);
2155 if (WARN_ON(res))
2156 return res;
2157
2158 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2159 sizeof(*funcs),
2160 GFP_KERNEL);
2161 if (!funcs)
2162 return -ENOMEM;
2163
2164
2165
2166
2167
2168 spin_lock_bh(&sdata->u.nan.func_lock);
2169
2170 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2171 funcs[i++] = func;
2172
2173 spin_unlock_bh(&sdata->u.nan.func_lock);
2174
2175 for (i = 0; funcs[i]; i++) {
2176 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2177 if (WARN_ON(res))
2178 ieee80211_nan_func_terminated(&sdata->vif,
2179 funcs[i]->instance_id,
2180 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2181 GFP_KERNEL);
2182 }
2183
2184 kfree(funcs);
2185
2186 return 0;
2187}
2188
2189int ieee80211_reconfig(struct ieee80211_local *local)
2190{
2191 struct ieee80211_hw *hw = &local->hw;
2192 struct ieee80211_sub_if_data *sdata;
2193 struct ieee80211_chanctx *ctx;
2194 struct sta_info *sta;
2195 int res, i;
2196 bool reconfig_due_to_wowlan = false;
2197 struct ieee80211_sub_if_data *sched_scan_sdata;
2198 struct cfg80211_sched_scan_request *sched_scan_req;
2199 bool sched_scan_stopped = false;
2200 bool suspended = local->suspended;
2201
2202
2203 if (!local->open_count)
2204 goto wake_up;
2205
2206#ifdef CONFIG_PM
2207 if (suspended)
2208 local->resuming = true;
2209
2210 if (local->wowlan) {
2211
2212
2213
2214
2215
2216
2217 local->suspended = false;
2218 res = drv_resume(local);
2219 local->wowlan = false;
2220 if (res < 0) {
2221 local->resuming = false;
2222 return res;
2223 }
2224 if (res == 0)
2225 goto wake_up;
2226 WARN_ON(res > 1);
2227
2228
2229
2230
2231
2232 reconfig_due_to_wowlan = true;
2233 local->suspended = true;
2234 }
2235#endif
2236
2237
2238
2239
2240
2241
2242
2243
2244 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2245 cancel_work_sync(&local->restart_work);
2246
2247 local->started = false;
2248
2249
2250
2251
2252
2253
2254
2255 res = drv_start(local);
2256 if (res) {
2257 if (suspended)
2258 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2259 else
2260 WARN(1, "Hardware became unavailable during restart.\n");
2261 ieee80211_handle_reconfig_failure(local);
2262 return res;
2263 }
2264
2265
2266 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2267
2268
2269 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2270
2271
2272 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2273
2274 ieee80211_led_radio(local, true);
2275 ieee80211_mod_tpt_led_trig(local,
2276 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2277
2278
2279 sdata = rtnl_dereference(local->monitor_sdata);
2280 if (sdata) {
2281
2282 WARN_ON(local->resuming);
2283 res = drv_add_interface(local, sdata);
2284 if (WARN_ON(res)) {
2285 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2286 synchronize_net();
2287 kfree(sdata);
2288 }
2289 }
2290
2291 list_for_each_entry(sdata, &local->interfaces, list) {
2292 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2293 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2294 ieee80211_sdata_running(sdata)) {
2295 res = drv_add_interface(local, sdata);
2296 if (WARN_ON(res))
2297 break;
2298 }
2299 }
2300
2301
2302
2303
2304 if (res) {
2305 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2306 list)
2307 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2308 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2309 ieee80211_sdata_running(sdata))
2310 drv_remove_interface(local, sdata);
2311 ieee80211_handle_reconfig_failure(local);
2312 return res;
2313 }
2314
2315
2316 if (local->use_chanctx) {
2317 mutex_lock(&local->chanctx_mtx);
2318 list_for_each_entry(ctx, &local->chanctx_list, list)
2319 if (ctx->replace_state !=
2320 IEEE80211_CHANCTX_REPLACES_OTHER)
2321 WARN_ON(drv_add_chanctx(local, ctx));
2322 mutex_unlock(&local->chanctx_mtx);
2323
2324 sdata = rtnl_dereference(local->monitor_sdata);
2325 if (sdata && ieee80211_sdata_running(sdata))
2326 ieee80211_assign_chanctx(local, sdata);
2327 }
2328
2329
2330 ieee80211_hw_config(local, ~0);
2331
2332 ieee80211_configure_filter(local);
2333
2334
2335 list_for_each_entry(sdata, &local->interfaces, list) {
2336 u32 changed;
2337
2338 if (!ieee80211_sdata_running(sdata))
2339 continue;
2340
2341 ieee80211_assign_chanctx(local, sdata);
2342
2343 switch (sdata->vif.type) {
2344 case NL80211_IFTYPE_AP_VLAN:
2345 case NL80211_IFTYPE_MONITOR:
2346 break;
2347 case NL80211_IFTYPE_ADHOC:
2348 if (sdata->vif.bss_conf.ibss_joined)
2349 WARN_ON(drv_join_ibss(local, sdata));
2350 fallthrough;
2351 default:
2352 ieee80211_reconfig_stations(sdata);
2353 fallthrough;
2354 case NL80211_IFTYPE_AP:
2355 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2356 drv_conf_tx(local, sdata, i,
2357 &sdata->tx_conf[i]);
2358 break;
2359 }
2360
2361
2362 changed = BSS_CHANGED_ERP_CTS_PROT |
2363 BSS_CHANGED_ERP_PREAMBLE |
2364 BSS_CHANGED_ERP_SLOT |
2365 BSS_CHANGED_HT |
2366 BSS_CHANGED_BASIC_RATES |
2367 BSS_CHANGED_BEACON_INT |
2368 BSS_CHANGED_BSSID |
2369 BSS_CHANGED_CQM |
2370 BSS_CHANGED_QOS |
2371 BSS_CHANGED_IDLE |
2372 BSS_CHANGED_TXPOWER |
2373 BSS_CHANGED_MCAST_RATE;
2374
2375 if (sdata->vif.mu_mimo_owner)
2376 changed |= BSS_CHANGED_MU_GROUPS;
2377
2378 switch (sdata->vif.type) {
2379 case NL80211_IFTYPE_STATION:
2380 changed |= BSS_CHANGED_ASSOC |
2381 BSS_CHANGED_ARP_FILTER |
2382 BSS_CHANGED_PS;
2383
2384
2385 if (sdata->u.mgd.have_beacon)
2386 changed |= BSS_CHANGED_BEACON_INFO;
2387
2388 if (sdata->vif.bss_conf.max_idle_period ||
2389 sdata->vif.bss_conf.protected_keep_alive)
2390 changed |= BSS_CHANGED_KEEP_ALIVE;
2391
2392 sdata_lock(sdata);
2393 ieee80211_bss_info_change_notify(sdata, changed);
2394 sdata_unlock(sdata);
2395 break;
2396 case NL80211_IFTYPE_OCB:
2397 changed |= BSS_CHANGED_OCB;
2398 ieee80211_bss_info_change_notify(sdata, changed);
2399 break;
2400 case NL80211_IFTYPE_ADHOC:
2401 changed |= BSS_CHANGED_IBSS;
2402 fallthrough;
2403 case NL80211_IFTYPE_AP:
2404 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2405
2406 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2407 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2408 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2409 changed |= BSS_CHANGED_FTM_RESPONDER;
2410
2411 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2412 changed |= BSS_CHANGED_AP_PROBE_RESP;
2413
2414 if (rcu_access_pointer(sdata->u.ap.beacon))
2415 drv_start_ap(local, sdata);
2416 }
2417 fallthrough;
2418 case NL80211_IFTYPE_MESH_POINT:
2419 if (sdata->vif.bss_conf.enable_beacon) {
2420 changed |= BSS_CHANGED_BEACON |
2421 BSS_CHANGED_BEACON_ENABLED;
2422 ieee80211_bss_info_change_notify(sdata, changed);
2423 }
2424 break;
2425 case NL80211_IFTYPE_NAN:
2426 res = ieee80211_reconfig_nan(sdata);
2427 if (res < 0) {
2428 ieee80211_handle_reconfig_failure(local);
2429 return res;
2430 }
2431 break;
2432 case NL80211_IFTYPE_WDS:
2433 case NL80211_IFTYPE_AP_VLAN:
2434 case NL80211_IFTYPE_MONITOR:
2435 case NL80211_IFTYPE_P2P_DEVICE:
2436
2437 break;
2438 case NL80211_IFTYPE_UNSPECIFIED:
2439 case NUM_NL80211_IFTYPES:
2440 case NL80211_IFTYPE_P2P_CLIENT:
2441 case NL80211_IFTYPE_P2P_GO:
2442 WARN_ON(1);
2443 break;
2444 }
2445 }
2446
2447 ieee80211_recalc_ps(local);
2448
2449
2450
2451
2452
2453
2454
2455 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2456 list_for_each_entry(sdata, &local->interfaces, list) {
2457 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2458 continue;
2459 if (!sdata->u.mgd.associated)
2460 continue;
2461
2462 ieee80211_send_nullfunc(local, sdata, false);
2463 }
2464 }
2465
2466
2467 mutex_lock(&local->sta_mtx);
2468 list_for_each_entry(sta, &local->sta_list, list) {
2469 enum ieee80211_sta_state state;
2470
2471 if (!sta->uploaded)
2472 continue;
2473
2474 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2475 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2476 continue;
2477
2478 for (state = IEEE80211_STA_NOTEXIST;
2479 state < sta->sta_state; state++)
2480 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2481 state + 1));
2482 }
2483 mutex_unlock(&local->sta_mtx);
2484
2485
2486 list_for_each_entry(sdata, &local->interfaces, list)
2487 ieee80211_reenable_keys(sdata);
2488
2489
2490 mutex_lock(&local->mtx);
2491 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2492 lockdep_is_held(&local->mtx));
2493 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2494 lockdep_is_held(&local->mtx));
2495 if (sched_scan_sdata && sched_scan_req)
2496
2497
2498
2499
2500
2501
2502
2503 if (sched_scan_req->n_scan_plans > 1 ||
2504 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2505 sched_scan_req)) {
2506 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2507 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2508 sched_scan_stopped = true;
2509 }
2510 mutex_unlock(&local->mtx);
2511
2512 if (sched_scan_stopped)
2513 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
2514
2515 wake_up:
2516
2517 if (local->monitors == local->open_count && local->monitors > 0)
2518 ieee80211_add_virtual_monitor(local);
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2531 mutex_lock(&local->sta_mtx);
2532
2533 list_for_each_entry(sta, &local->sta_list, list) {
2534 if (!local->resuming)
2535 ieee80211_sta_tear_down_BA_sessions(
2536 sta, AGG_STOP_LOCAL_REQUEST);
2537 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2538 }
2539
2540 mutex_unlock(&local->sta_mtx);
2541 }
2542
2543 if (local->in_reconfig) {
2544 local->in_reconfig = false;
2545 barrier();
2546
2547
2548 mutex_lock(&local->mtx);
2549 ieee80211_start_next_roc(local);
2550 mutex_unlock(&local->mtx);
2551
2552
2553 list_for_each_entry(sdata, &local->interfaces, list)
2554 ieee80211_queue_work(&local->hw, &sdata->work);
2555 }
2556
2557 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2558 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2559 false);
2560
2561
2562
2563
2564
2565 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2566 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2567
2568 if (!suspended)
2569 return 0;
2570
2571#ifdef CONFIG_PM
2572
2573 local->suspended = false;
2574 mb();
2575 local->resuming = false;
2576
2577 ieee80211_flush_completed_scan(local, false);
2578
2579 if (local->open_count && !reconfig_due_to_wowlan)
2580 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2581
2582 list_for_each_entry(sdata, &local->interfaces, list) {
2583 if (!ieee80211_sdata_running(sdata))
2584 continue;
2585 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2586 ieee80211_sta_restart(sdata);
2587 }
2588
2589 mod_timer(&local->sta_cleanup, jiffies + 1);
2590#else
2591 WARN_ON(1);
2592#endif
2593
2594 return 0;
2595}
2596
2597void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2598{
2599 struct ieee80211_sub_if_data *sdata;
2600 struct ieee80211_local *local;
2601 struct ieee80211_key *key;
2602
2603 if (WARN_ON(!vif))
2604 return;
2605
2606 sdata = vif_to_sdata(vif);
2607 local = sdata->local;
2608
2609 if (WARN_ON(!local->resuming))
2610 return;
2611
2612 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2613 return;
2614
2615 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2616
2617 mutex_lock(&local->key_mtx);
2618 list_for_each_entry(key, &sdata->key_list, list)
2619 key->flags |= KEY_FLAG_TAINTED;
2620 mutex_unlock(&local->key_mtx);
2621}
2622EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2623
2624void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2625{
2626 struct ieee80211_local *local = sdata->local;
2627 struct ieee80211_chanctx_conf *chanctx_conf;
2628 struct ieee80211_chanctx *chanctx;
2629
2630 mutex_lock(&local->chanctx_mtx);
2631
2632 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2633 lockdep_is_held(&local->chanctx_mtx));
2634
2635
2636
2637
2638
2639
2640
2641 if (!chanctx_conf)
2642 goto unlock;
2643
2644 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2645 ieee80211_recalc_smps_chanctx(local, chanctx);
2646 unlock:
2647 mutex_unlock(&local->chanctx_mtx);
2648}
2649
2650void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2651{
2652 struct ieee80211_local *local = sdata->local;
2653 struct ieee80211_chanctx_conf *chanctx_conf;
2654 struct ieee80211_chanctx *chanctx;
2655
2656 mutex_lock(&local->chanctx_mtx);
2657
2658 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2659 lockdep_is_held(&local->chanctx_mtx));
2660
2661 if (WARN_ON_ONCE(!chanctx_conf))
2662 goto unlock;
2663
2664 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2665 ieee80211_recalc_chanctx_min_def(local, chanctx);
2666 unlock:
2667 mutex_unlock(&local->chanctx_mtx);
2668}
2669
2670size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2671{
2672 size_t pos = offset;
2673
2674 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2675 pos += 2 + ies[pos + 1];
2676
2677 return pos;
2678}
2679
2680static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2681 int rssi_min_thold,
2682 int rssi_max_thold)
2683{
2684 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2685
2686 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2687 return;
2688
2689
2690
2691
2692
2693
2694 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2695 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2696}
2697
2698void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2699 int rssi_min_thold,
2700 int rssi_max_thold)
2701{
2702 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2703
2704 WARN_ON(rssi_min_thold == rssi_max_thold ||
2705 rssi_min_thold > rssi_max_thold);
2706
2707 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2708 rssi_max_thold);
2709}
2710EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2711
2712void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2713{
2714 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2715
2716 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2717}
2718EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
2719
2720u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2721 u16 cap)
2722{
2723 __le16 tmp;
2724
2725 *pos++ = WLAN_EID_HT_CAPABILITY;
2726 *pos++ = sizeof(struct ieee80211_ht_cap);
2727 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2728
2729
2730 tmp = cpu_to_le16(cap);
2731 memcpy(pos, &tmp, sizeof(u16));
2732 pos += sizeof(u16);
2733
2734
2735 *pos++ = ht_cap->ampdu_factor |
2736 (ht_cap->ampdu_density <<
2737 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2738
2739
2740 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2741 pos += sizeof(ht_cap->mcs);
2742
2743
2744 pos += sizeof(__le16);
2745
2746
2747 pos += sizeof(__le32);
2748
2749
2750 pos += sizeof(u8);
2751
2752 return pos;
2753}
2754
2755u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2756 u32 cap)
2757{
2758 __le32 tmp;
2759
2760 *pos++ = WLAN_EID_VHT_CAPABILITY;
2761 *pos++ = sizeof(struct ieee80211_vht_cap);
2762 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2763
2764
2765 tmp = cpu_to_le32(cap);
2766 memcpy(pos, &tmp, sizeof(u32));
2767 pos += sizeof(u32);
2768
2769
2770 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2771 pos += sizeof(vht_cap->vht_mcs);
2772
2773 return pos;
2774}
2775
2776u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2777{
2778 const struct ieee80211_sta_he_cap *he_cap;
2779 struct ieee80211_supported_band *sband;
2780 u8 n;
2781
2782 sband = ieee80211_get_sband(sdata);
2783 if (!sband)
2784 return 0;
2785
2786 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2787 if (!he_cap)
2788 return 0;
2789
2790 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2791 return 2 + 1 +
2792 sizeof(he_cap->he_cap_elem) + n +
2793 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2794 he_cap->he_cap_elem.phy_cap_info);
2795}
2796
2797u8 *ieee80211_ie_build_he_cap(u8 *pos,
2798 const struct ieee80211_sta_he_cap *he_cap,
2799 u8 *end)
2800{
2801 u8 n;
2802 u8 ie_len;
2803 u8 *orig_pos = pos;
2804
2805
2806
2807
2808
2809
2810 if (!he_cap)
2811 return orig_pos;
2812
2813 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2814 ie_len = 2 + 1 +
2815 sizeof(he_cap->he_cap_elem) + n +
2816 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2817 he_cap->he_cap_elem.phy_cap_info);
2818
2819 if ((end - pos) < ie_len)
2820 return orig_pos;
2821
2822 *pos++ = WLAN_EID_EXTENSION;
2823 pos++;
2824 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2825
2826
2827 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2828 pos += sizeof(he_cap->he_cap_elem);
2829
2830 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2831 pos += n;
2832
2833
2834 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2835 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2836 goto end;
2837
2838
2839
2840
2841
2842 n = hweight8(he_cap->ppe_thres[0] &
2843 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2844 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2845 IEEE80211_PPE_THRES_NSS_POS));
2846
2847
2848
2849
2850
2851 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2852 n = DIV_ROUND_UP(n, 8);
2853
2854
2855 memcpy(pos, &he_cap->ppe_thres, n);
2856 pos += n;
2857
2858end:
2859 orig_pos[1] = (pos - orig_pos) - 2;
2860 return pos;
2861}
2862
2863void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2864 struct sk_buff *skb)
2865{
2866 struct ieee80211_supported_band *sband;
2867 const struct ieee80211_sband_iftype_data *iftd;
2868 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
2869 u8 *pos;
2870 u16 cap;
2871
2872 sband = ieee80211_get_sband(sdata);
2873 if (!sband)
2874 return;
2875
2876 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
2877 if (WARN_ON(!iftd))
2878 return;
2879
2880
2881 if (!iftd->he_6ghz_capa.capa)
2882 return;
2883
2884 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
2885 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
2886
2887 switch (sdata->smps_mode) {
2888 case IEEE80211_SMPS_AUTOMATIC:
2889 case IEEE80211_SMPS_NUM_MODES:
2890 WARN_ON(1);
2891 fallthrough;
2892 case IEEE80211_SMPS_OFF:
2893 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
2894 IEEE80211_HE_6GHZ_CAP_SM_PS);
2895 break;
2896 case IEEE80211_SMPS_STATIC:
2897 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
2898 IEEE80211_HE_6GHZ_CAP_SM_PS);
2899 break;
2900 case IEEE80211_SMPS_DYNAMIC:
2901 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
2902 IEEE80211_HE_6GHZ_CAP_SM_PS);
2903 break;
2904 }
2905
2906 pos = skb_put(skb, 2 + 1 + sizeof(cap));
2907 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
2908 pos + 2 + 1 + sizeof(cap));
2909}
2910
2911u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2912 const struct cfg80211_chan_def *chandef,
2913 u16 prot_mode, bool rifs_mode)
2914{
2915 struct ieee80211_ht_operation *ht_oper;
2916
2917 *pos++ = WLAN_EID_HT_OPERATION;
2918 *pos++ = sizeof(struct ieee80211_ht_operation);
2919 ht_oper = (struct ieee80211_ht_operation *)pos;
2920 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2921 chandef->chan->center_freq);
2922 switch (chandef->width) {
2923 case NL80211_CHAN_WIDTH_160:
2924 case NL80211_CHAN_WIDTH_80P80:
2925 case NL80211_CHAN_WIDTH_80:
2926 case NL80211_CHAN_WIDTH_40:
2927 if (chandef->center_freq1 > chandef->chan->center_freq)
2928 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2929 else
2930 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2931 break;
2932 default:
2933 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2934 break;
2935 }
2936 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
2937 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2938 chandef->width != NL80211_CHAN_WIDTH_20)
2939 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
2940
2941 if (rifs_mode)
2942 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2943
2944 ht_oper->operation_mode = cpu_to_le16(prot_mode);
2945 ht_oper->stbc_param = 0x0000;
2946
2947
2948
2949 memset(&ht_oper->basic_set, 0, 16);
2950 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
2951
2952 return pos + sizeof(struct ieee80211_ht_operation);
2953}
2954
2955void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2956 const struct cfg80211_chan_def *chandef)
2957{
2958 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH;
2959 *pos++ = 3;
2960
2961 switch (chandef->width) {
2962 case NL80211_CHAN_WIDTH_80:
2963 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
2964 break;
2965 case NL80211_CHAN_WIDTH_160:
2966 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
2967 break;
2968 case NL80211_CHAN_WIDTH_80P80:
2969 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2970 break;
2971 default:
2972 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
2973 }
2974
2975
2976 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
2977
2978 if (chandef->center_freq2)
2979 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
2980 else
2981 *pos++ = 0;
2982}
2983
2984u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2985 const struct cfg80211_chan_def *chandef)
2986{
2987 struct ieee80211_vht_operation *vht_oper;
2988
2989 *pos++ = WLAN_EID_VHT_OPERATION;
2990 *pos++ = sizeof(struct ieee80211_vht_operation);
2991 vht_oper = (struct ieee80211_vht_operation *)pos;
2992 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
2993 chandef->center_freq1);
2994 if (chandef->center_freq2)
2995 vht_oper->center_freq_seg1_idx =
2996 ieee80211_frequency_to_channel(chandef->center_freq2);
2997 else
2998 vht_oper->center_freq_seg1_idx = 0x00;
2999
3000 switch (chandef->width) {
3001 case NL80211_CHAN_WIDTH_160:
3002
3003
3004
3005
3006 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3007 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3008 if (chandef->chan->center_freq < chandef->center_freq1)
3009 vht_oper->center_freq_seg0_idx -= 8;
3010 else
3011 vht_oper->center_freq_seg0_idx += 8;
3012 break;
3013 case NL80211_CHAN_WIDTH_80P80:
3014
3015
3016
3017
3018 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3019 break;
3020 case NL80211_CHAN_WIDTH_80:
3021 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3022 break;
3023 default:
3024 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3025 break;
3026 }
3027
3028
3029 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3030
3031 return pos + sizeof(struct ieee80211_vht_operation);
3032}
3033
3034u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3035{
3036 struct ieee80211_he_operation *he_oper;
3037 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3038 u32 he_oper_params;
3039 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3040
3041 if (chandef->chan->band == NL80211_BAND_6GHZ)
3042 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3043
3044 *pos++ = WLAN_EID_EXTENSION;
3045 *pos++ = ie_len;
3046 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3047
3048 he_oper_params = 0;
3049 he_oper_params |= u32_encode_bits(1023,
3050 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3051 he_oper_params |= u32_encode_bits(1,
3052 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3053 he_oper_params |= u32_encode_bits(1,
3054 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3055 if (chandef->chan->band == NL80211_BAND_6GHZ)
3056 he_oper_params |= u32_encode_bits(1,
3057 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3058
3059 he_oper = (struct ieee80211_he_operation *)pos;
3060 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3061
3062
3063 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3064 pos += sizeof(struct ieee80211_he_operation);
3065
3066 if (chandef->chan->band != NL80211_BAND_6GHZ)
3067 goto out;
3068
3069
3070 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3071 he_6ghz_op->minrate = 6;
3072 he_6ghz_op->primary =
3073 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3074 he_6ghz_op->ccfs0 =
3075 ieee80211_frequency_to_channel(chandef->center_freq1);
3076 if (chandef->center_freq2)
3077 he_6ghz_op->ccfs1 =
3078 ieee80211_frequency_to_channel(chandef->center_freq2);
3079 else
3080 he_6ghz_op->ccfs1 = 0;
3081
3082 switch (chandef->width) {
3083 case NL80211_CHAN_WIDTH_160:
3084
3085
3086
3087 he_6ghz_op->control =
3088 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3089 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3090 if (chandef->chan->center_freq < chandef->center_freq1)
3091 he_6ghz_op->ccfs0 -= 8;
3092 else
3093 he_6ghz_op->ccfs0 += 8;
3094 fallthrough;
3095 case NL80211_CHAN_WIDTH_80P80:
3096 he_6ghz_op->control =
3097 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3098 break;
3099 case NL80211_CHAN_WIDTH_80:
3100 he_6ghz_op->control =
3101 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3102 break;
3103 case NL80211_CHAN_WIDTH_40:
3104 he_6ghz_op->control =
3105 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3106 break;
3107 default:
3108 he_6ghz_op->control =
3109 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3110 break;
3111 }
3112
3113 pos += sizeof(struct ieee80211_he_6ghz_oper);
3114
3115out:
3116 return pos;
3117}
3118
3119bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3120 struct cfg80211_chan_def *chandef)
3121{
3122 enum nl80211_channel_type channel_type;
3123
3124 if (!ht_oper)
3125 return false;
3126
3127 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3128 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3129 channel_type = NL80211_CHAN_HT20;
3130 break;
3131 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3132 channel_type = NL80211_CHAN_HT40PLUS;
3133 break;
3134 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3135 channel_type = NL80211_CHAN_HT40MINUS;
3136 break;
3137 default:
3138 channel_type = NL80211_CHAN_NO_HT;
3139 return false;
3140 }
3141
3142 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3143 return true;
3144}
3145
3146bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3147 const struct ieee80211_vht_operation *oper,
3148 const struct ieee80211_ht_operation *htop,
3149 struct cfg80211_chan_def *chandef)
3150{
3151 struct cfg80211_chan_def new = *chandef;
3152 int cf0, cf1;
3153 int ccfs0, ccfs1, ccfs2;
3154 int ccf0, ccf1;
3155 u32 vht_cap;
3156 bool support_80_80 = false;
3157 bool support_160 = false;
3158 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3159 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3160 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3161 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3162
3163 if (!oper || !htop)
3164 return false;
3165
3166 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3167 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3168 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3169 support_80_80 = ((vht_cap &
3170 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3171 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3172 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3173 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3174 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3175 ccfs0 = oper->center_freq_seg0_idx;
3176 ccfs1 = oper->center_freq_seg1_idx;
3177 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3178 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3179 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3180
3181 ccf0 = ccfs0;
3182
3183
3184 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3185 ext_nss_bw_supp = 0;
3186
3187
3188
3189
3190
3191
3192
3193 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3194 default:
3195 case 0x00:
3196 ccf1 = 0;
3197 support_160 = false;
3198 support_80_80 = false;
3199 break;
3200 case 0x01:
3201 support_80_80 = false;
3202 fallthrough;
3203 case 0x02:
3204 case 0x03:
3205 ccf1 = ccfs2;
3206 break;
3207 case 0x10:
3208 ccf1 = ccfs1;
3209 break;
3210 case 0x11:
3211 case 0x12:
3212 if (!ccfs1)
3213 ccf1 = ccfs2;
3214 else
3215 ccf1 = ccfs1;
3216 break;
3217 case 0x13:
3218 case 0x20:
3219 case 0x23:
3220 ccf1 = ccfs1;
3221 break;
3222 }
3223
3224 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3225 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3226
3227 switch (oper->chan_width) {
3228 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3229
3230 break;
3231 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3232 new.width = NL80211_CHAN_WIDTH_80;
3233 new.center_freq1 = cf0;
3234
3235 if (ccf1) {
3236 unsigned int diff;
3237
3238 diff = abs(ccf1 - ccf0);
3239 if ((diff == 8) && support_160) {
3240 new.width = NL80211_CHAN_WIDTH_160;
3241 new.center_freq1 = cf1;
3242 } else if ((diff > 8) && support_80_80) {
3243 new.width = NL80211_CHAN_WIDTH_80P80;
3244 new.center_freq2 = cf1;
3245 }
3246 }
3247 break;
3248 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3249
3250 new.width = NL80211_CHAN_WIDTH_160;
3251 new.center_freq1 = cf0;
3252 break;
3253 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3254
3255 new.width = NL80211_CHAN_WIDTH_80P80;
3256 new.center_freq1 = cf0;
3257 new.center_freq2 = cf1;
3258 break;
3259 default:
3260 return false;
3261 }
3262
3263 if (!cfg80211_chandef_valid(&new))
3264 return false;
3265
3266 *chandef = new;
3267 return true;
3268}
3269
3270bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3271 const struct ieee80211_he_operation *he_oper,
3272 struct cfg80211_chan_def *chandef)
3273{
3274 struct ieee80211_local *local = sdata->local;
3275 struct ieee80211_supported_band *sband;
3276 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3277 const struct ieee80211_sta_he_cap *he_cap;
3278 struct cfg80211_chan_def he_chandef = *chandef;
3279 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3280 bool support_80_80, support_160;
3281 u8 he_phy_cap;
3282 u32 freq;
3283
3284 if (chandef->chan->band != NL80211_BAND_6GHZ)
3285 return true;
3286
3287 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3288
3289 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3290 if (!he_cap) {
3291 sdata_info(sdata, "Missing iftype sband data/HE cap");
3292 return false;
3293 }
3294
3295 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3296 support_160 =
3297 he_phy_cap &
3298 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3299 support_80_80 =
3300 he_phy_cap &
3301 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3302
3303 if (!he_oper) {
3304 sdata_info(sdata,
3305 "HE is not advertised on (on %d MHz), expect issues\n",
3306 chandef->chan->center_freq);
3307 return false;
3308 }
3309
3310 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3311
3312 if (!he_6ghz_oper) {
3313 sdata_info(sdata,
3314 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3315 chandef->chan->center_freq);
3316 return false;
3317 }
3318
3319 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3320 NL80211_BAND_6GHZ);
3321 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3322
3323 switch (u8_get_bits(he_6ghz_oper->control,
3324 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3325 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3326 he_chandef.width = NL80211_CHAN_WIDTH_20;
3327 break;
3328 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3329 he_chandef.width = NL80211_CHAN_WIDTH_40;
3330 break;
3331 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3332 he_chandef.width = NL80211_CHAN_WIDTH_80;
3333 break;
3334 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3335 he_chandef.width = NL80211_CHAN_WIDTH_80;
3336 if (!he_6ghz_oper->ccfs1)
3337 break;
3338 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3339 if (support_160)
3340 he_chandef.width = NL80211_CHAN_WIDTH_160;
3341 } else {
3342 if (support_80_80)
3343 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3344 }
3345 break;
3346 }
3347
3348 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3349 he_chandef.center_freq1 =
3350 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3351 NL80211_BAND_6GHZ);
3352 } else {
3353 he_chandef.center_freq1 =
3354 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3355 NL80211_BAND_6GHZ);
3356 if (support_80_80 || support_160)
3357 he_chandef.center_freq2 =
3358 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3359 NL80211_BAND_6GHZ);
3360 }
3361
3362 if (!cfg80211_chandef_valid(&he_chandef)) {
3363 sdata_info(sdata,
3364 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3365 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3366 he_chandef.width,
3367 he_chandef.center_freq1,
3368 he_chandef.center_freq2);
3369 return false;
3370 }
3371
3372 *chandef = he_chandef;
3373
3374 return true;
3375}
3376
3377int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3378 const struct ieee80211_supported_band *sband,
3379 const u8 *srates, int srates_len, u32 *rates)
3380{
3381 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3382 int shift = ieee80211_chandef_get_shift(chandef);
3383 struct ieee80211_rate *br;
3384 int brate, rate, i, j, count = 0;
3385
3386 *rates = 0;
3387
3388 for (i = 0; i < srates_len; i++) {
3389 rate = srates[i] & 0x7f;
3390
3391 for (j = 0; j < sband->n_bitrates; j++) {
3392 br = &sband->bitrates[j];
3393 if ((rate_flags & br->flags) != rate_flags)
3394 continue;
3395
3396 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3397 if (brate == rate) {
3398 *rates |= BIT(j);
3399 count++;
3400 break;
3401 }
3402 }
3403 }
3404 return count;
3405}
3406
3407int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3408 struct sk_buff *skb, bool need_basic,
3409 enum nl80211_band band)
3410{
3411 struct ieee80211_local *local = sdata->local;
3412 struct ieee80211_supported_band *sband;
3413 int rate, shift;
3414 u8 i, rates, *pos;
3415 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3416 u32 rate_flags;
3417
3418 shift = ieee80211_vif_get_shift(&sdata->vif);
3419 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3420 sband = local->hw.wiphy->bands[band];
3421 rates = 0;
3422 for (i = 0; i < sband->n_bitrates; i++) {
3423 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3424 continue;
3425 rates++;
3426 }
3427 if (rates > 8)
3428 rates = 8;
3429
3430 if (skb_tailroom(skb) < rates + 2)
3431 return -ENOMEM;
3432
3433 pos = skb_put(skb, rates + 2);
3434 *pos++ = WLAN_EID_SUPP_RATES;
3435 *pos++ = rates;
3436 for (i = 0; i < rates; i++) {
3437 u8 basic = 0;
3438 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3439 continue;
3440
3441 if (need_basic && basic_rates & BIT(i))
3442 basic = 0x80;
3443 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3444 5 * (1 << shift));
3445 *pos++ = basic | (u8) rate;
3446 }
3447
3448 return 0;
3449}
3450
3451int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3452 struct sk_buff *skb, bool need_basic,
3453 enum nl80211_band band)
3454{
3455 struct ieee80211_local *local = sdata->local;
3456 struct ieee80211_supported_band *sband;
3457 int rate, shift;
3458 u8 i, exrates, *pos;
3459 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3460 u32 rate_flags;
3461
3462 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3463 shift = ieee80211_vif_get_shift(&sdata->vif);
3464
3465 sband = local->hw.wiphy->bands[band];
3466 exrates = 0;
3467 for (i = 0; i < sband->n_bitrates; i++) {
3468 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3469 continue;
3470 exrates++;
3471 }
3472
3473 if (exrates > 8)
3474 exrates -= 8;
3475 else
3476 exrates = 0;
3477
3478 if (skb_tailroom(skb) < exrates + 2)
3479 return -ENOMEM;
3480
3481 if (exrates) {
3482 pos = skb_put(skb, exrates + 2);
3483 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3484 *pos++ = exrates;
3485 for (i = 8; i < sband->n_bitrates; i++) {
3486 u8 basic = 0;
3487 if ((rate_flags & sband->bitrates[i].flags)
3488 != rate_flags)
3489 continue;
3490 if (need_basic && basic_rates & BIT(i))
3491 basic = 0x80;
3492 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3493 5 * (1 << shift));
3494 *pos++ = basic | (u8) rate;
3495 }
3496 }
3497 return 0;
3498}
3499
3500int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3501{
3502 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3503 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3504
3505 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3506
3507 return 0;
3508 }
3509 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3510}
3511EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3512
3513u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3514{
3515 if (!mcs)
3516 return 1;
3517
3518
3519
3520 if (mcs->rx_mask[3])
3521 return 4;
3522 if (mcs->rx_mask[2])
3523 return 3;
3524 if (mcs->rx_mask[1])
3525 return 2;
3526 return 1;
3527}
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3541 struct ieee80211_rx_status *status,
3542 unsigned int mpdu_len,
3543 unsigned int mpdu_offset)
3544{
3545 u64 ts = status->mactime;
3546 struct rate_info ri;
3547 u16 rate;
3548
3549 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3550 return 0;
3551
3552 memset(&ri, 0, sizeof(ri));
3553
3554 ri.bw = status->bw;
3555
3556
3557 switch (status->encoding) {
3558 case RX_ENC_HT:
3559 ri.mcs = status->rate_idx;
3560 ri.flags |= RATE_INFO_FLAGS_MCS;
3561 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3562 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3563 break;
3564 case RX_ENC_VHT:
3565 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3566 ri.mcs = status->rate_idx;
3567 ri.nss = status->nss;
3568 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3569 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3570 break;
3571 default:
3572 WARN_ON(1);
3573 fallthrough;
3574 case RX_ENC_LEGACY: {
3575 struct ieee80211_supported_band *sband;
3576 int shift = 0;
3577 int bitrate;
3578
3579 switch (status->bw) {
3580 case RATE_INFO_BW_10:
3581 shift = 1;
3582 break;
3583 case RATE_INFO_BW_5:
3584 shift = 2;
3585 break;
3586 }
3587
3588 sband = local->hw.wiphy->bands[status->band];
3589 bitrate = sband->bitrates[status->rate_idx].bitrate;
3590 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3591
3592 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3593
3594 if (status->band == NL80211_BAND_5GHZ) {
3595 ts += 20 << shift;
3596 mpdu_offset += 2;
3597 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3598 ts += 96;
3599 } else {
3600 ts += 192;
3601 }
3602 }
3603 break;
3604 }
3605 }
3606
3607 rate = cfg80211_calculate_bitrate(&ri);
3608 if (WARN_ONCE(!rate,
3609 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3610 (unsigned long long)status->flag, status->rate_idx,
3611 status->nss))
3612 return 0;
3613
3614
3615 if (status->flag & RX_FLAG_MACTIME_END)
3616 ts -= mpdu_len * 8 * 10 / rate;
3617
3618 ts += mpdu_offset * 8 * 10 / rate;
3619
3620 return ts;
3621}
3622
3623void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3624{
3625 struct ieee80211_sub_if_data *sdata;
3626 struct cfg80211_chan_def chandef;
3627
3628
3629 ASSERT_RTNL();
3630
3631 mutex_lock(&local->mtx);
3632 list_for_each_entry(sdata, &local->interfaces, list) {
3633
3634
3635
3636
3637 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3638
3639 if (sdata->wdev.cac_started) {
3640 chandef = sdata->vif.bss_conf.chandef;
3641 ieee80211_vif_release_channel(sdata);
3642 cfg80211_cac_event(sdata->dev,
3643 &chandef,
3644 NL80211_RADAR_CAC_ABORTED,
3645 GFP_KERNEL);
3646 }
3647 }
3648 mutex_unlock(&local->mtx);
3649}
3650
3651void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3652{
3653 struct ieee80211_local *local =
3654 container_of(work, struct ieee80211_local, radar_detected_work);
3655 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3656 struct ieee80211_chanctx *ctx;
3657 int num_chanctx = 0;
3658
3659 mutex_lock(&local->chanctx_mtx);
3660 list_for_each_entry(ctx, &local->chanctx_list, list) {
3661 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3662 continue;
3663
3664 num_chanctx++;
3665 chandef = ctx->conf.def;
3666 }
3667 mutex_unlock(&local->chanctx_mtx);
3668
3669 rtnl_lock();
3670 ieee80211_dfs_cac_cancel(local);
3671 rtnl_unlock();
3672
3673 if (num_chanctx > 1)
3674
3675 WARN_ON(1);
3676 else
3677 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
3678}
3679
3680void ieee80211_radar_detected(struct ieee80211_hw *hw)
3681{
3682 struct ieee80211_local *local = hw_to_local(hw);
3683
3684 trace_api_radar_detected(local);
3685
3686 schedule_work(&local->radar_detected_work);
3687}
3688EXPORT_SYMBOL(ieee80211_radar_detected);
3689
3690u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3691{
3692 u32 ret;
3693 int tmp;
3694
3695 switch (c->width) {
3696 case NL80211_CHAN_WIDTH_20:
3697 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3698 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3699 break;
3700 case NL80211_CHAN_WIDTH_40:
3701 c->width = NL80211_CHAN_WIDTH_20;
3702 c->center_freq1 = c->chan->center_freq;
3703 ret = IEEE80211_STA_DISABLE_40MHZ |
3704 IEEE80211_STA_DISABLE_VHT;
3705 break;
3706 case NL80211_CHAN_WIDTH_80:
3707 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3708
3709 tmp /= 2;
3710
3711 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3712 c->width = NL80211_CHAN_WIDTH_40;
3713 ret = IEEE80211_STA_DISABLE_VHT;
3714 break;
3715 case NL80211_CHAN_WIDTH_80P80:
3716 c->center_freq2 = 0;
3717 c->width = NL80211_CHAN_WIDTH_80;
3718 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3719 IEEE80211_STA_DISABLE_160MHZ;
3720 break;
3721 case NL80211_CHAN_WIDTH_160:
3722
3723 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3724
3725 tmp /= 4;
3726 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3727 c->width = NL80211_CHAN_WIDTH_80;
3728 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3729 IEEE80211_STA_DISABLE_160MHZ;
3730 break;
3731 default:
3732 case NL80211_CHAN_WIDTH_20_NOHT:
3733 WARN_ON_ONCE(1);
3734 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3735 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3736 break;
3737 case NL80211_CHAN_WIDTH_1:
3738 case NL80211_CHAN_WIDTH_2:
3739 case NL80211_CHAN_WIDTH_4:
3740 case NL80211_CHAN_WIDTH_8:
3741 case NL80211_CHAN_WIDTH_16:
3742 case NL80211_CHAN_WIDTH_5:
3743 case NL80211_CHAN_WIDTH_10:
3744 WARN_ON_ONCE(1);
3745
3746 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3747 break;
3748 }
3749
3750 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3751
3752 return ret;
3753}
3754
3755
3756
3757
3758
3759bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3760 enum ieee80211_smps_mode smps_mode_new)
3761{
3762 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3763 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3764 return false;
3765
3766 switch (smps_mode_old) {
3767 case IEEE80211_SMPS_STATIC:
3768 return false;
3769 case IEEE80211_SMPS_DYNAMIC:
3770 return smps_mode_new == IEEE80211_SMPS_STATIC;
3771 case IEEE80211_SMPS_OFF:
3772 return smps_mode_new != IEEE80211_SMPS_OFF;
3773 default:
3774 WARN_ON(1);
3775 }
3776
3777 return false;
3778}
3779
3780int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3781 struct cfg80211_csa_settings *csa_settings)
3782{
3783 struct sk_buff *skb;
3784 struct ieee80211_mgmt *mgmt;
3785 struct ieee80211_local *local = sdata->local;
3786 int freq;
3787 int hdr_len = offsetofend(struct ieee80211_mgmt,
3788 u.action.u.chan_switch);
3789 u8 *pos;
3790
3791 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3792 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3793 return -EOPNOTSUPP;
3794
3795 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3796 5 +
3797 3 +
3798 5 +
3799 8);
3800 if (!skb)
3801 return -ENOMEM;
3802
3803 skb_reserve(skb, local->tx_headroom);
3804 mgmt = skb_put_zero(skb, hdr_len);
3805 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3806 IEEE80211_STYPE_ACTION);
3807
3808 eth_broadcast_addr(mgmt->da);
3809 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3810 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3811 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3812 } else {
3813 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3814 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3815 }
3816 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3817 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3818 pos = skb_put(skb, 5);
3819 *pos++ = WLAN_EID_CHANNEL_SWITCH;
3820 *pos++ = 3;
3821 *pos++ = csa_settings->block_tx ? 1 : 0;
3822 freq = csa_settings->chandef.chan->center_freq;
3823 *pos++ = ieee80211_frequency_to_channel(freq);
3824 *pos++ = csa_settings->count;
3825
3826 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3827 enum nl80211_channel_type ch_type;
3828
3829 skb_put(skb, 3);
3830 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET;
3831 *pos++ = 1;
3832 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3833 if (ch_type == NL80211_CHAN_HT40PLUS)
3834 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3835 else
3836 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3837 }
3838
3839 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3840 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3841
3842 skb_put(skb, 8);
3843 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM;
3844 *pos++ = 6;
3845 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL;
3846 *pos = 0x00;
3847 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3848 *pos++ |= csa_settings->block_tx ?
3849 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3850 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos);
3851 pos += 2;
3852 put_unaligned_le16(ifmsh->pre_value, pos);
3853 pos += 2;
3854 }
3855
3856 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3857 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3858 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3859 skb_put(skb, 5);
3860 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3861 }
3862
3863 ieee80211_tx_skb(sdata, skb);
3864 return 0;
3865}
3866
3867bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3868{
3869 return !(cs == NULL || cs->cipher == 0 ||
3870 cs->hdr_len < cs->pn_len + cs->pn_off ||
3871 cs->hdr_len <= cs->key_idx_off ||
3872 cs->key_idx_shift > 7 ||
3873 cs->key_idx_mask == 0);
3874}
3875
3876bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
3877{
3878 int i;
3879
3880
3881 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
3882
3883 for (i = 0; i < n; i++)
3884 if (!ieee80211_cs_valid(&cs[i]))
3885 return false;
3886
3887 return true;
3888}
3889
3890const struct ieee80211_cipher_scheme *
3891ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
3892 enum nl80211_iftype iftype)
3893{
3894 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
3895 int n = local->hw.n_cipher_schemes;
3896 int i;
3897 const struct ieee80211_cipher_scheme *cs = NULL;
3898
3899 for (i = 0; i < n; i++) {
3900 if (l[i].cipher == cipher) {
3901 cs = &l[i];
3902 break;
3903 }
3904 }
3905
3906 if (!cs || !(cs->iftype & BIT(iftype)))
3907 return NULL;
3908
3909 return cs;
3910}
3911
3912int ieee80211_cs_headroom(struct ieee80211_local *local,
3913 struct cfg80211_crypto_settings *crypto,
3914 enum nl80211_iftype iftype)
3915{
3916 const struct ieee80211_cipher_scheme *cs;
3917 int headroom = IEEE80211_ENCRYPT_HEADROOM;
3918 int i;
3919
3920 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
3921 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
3922 iftype);
3923
3924 if (cs && headroom < cs->hdr_len)
3925 headroom = cs->hdr_len;
3926 }
3927
3928 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
3929 if (cs && headroom < cs->hdr_len)
3930 headroom = cs->hdr_len;
3931
3932 return headroom;
3933}
3934
3935static bool
3936ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3937{
3938 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3939 int skip;
3940
3941 if (end > 0)
3942 return false;
3943
3944
3945 if (data->count[i] == 1)
3946 return false;
3947
3948 if (data->desc[i].interval == 0)
3949 return false;
3950
3951
3952 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3953 if (data->count[i] < 255) {
3954 if (data->count[i] <= skip) {
3955 data->count[i] = 0;
3956 return false;
3957 }
3958
3959 data->count[i] -= skip;
3960 }
3961
3962 data->desc[i].start += skip * data->desc[i].interval;
3963
3964 return true;
3965}
3966
3967static bool
3968ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3969 s32 *offset)
3970{
3971 bool ret = false;
3972 int i;
3973
3974 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3975 s32 cur;
3976
3977 if (!data->count[i])
3978 continue;
3979
3980 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3981 ret = true;
3982
3983 cur = data->desc[i].start - tsf;
3984 if (cur > *offset)
3985 continue;
3986
3987 cur = data->desc[i].start + data->desc[i].duration - tsf;
3988 if (cur > *offset)
3989 *offset = cur;
3990 }
3991
3992 return ret;
3993}
3994
3995static u32
3996ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3997{
3998 s32 offset = 0;
3999 int tries = 0;
4000
4001
4002
4003
4004 int max_tries = 5;
4005
4006 ieee80211_extend_absent_time(data, tsf, &offset);
4007 do {
4008 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4009 break;
4010
4011 tries++;
4012 } while (tries < max_tries);
4013
4014 return offset;
4015}
4016
4017void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4018{
4019 u32 next_offset = BIT(31) - 1;
4020 int i;
4021
4022 data->absent = 0;
4023 data->has_next_tsf = false;
4024 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4025 s32 start;
4026
4027 if (!data->count[i])
4028 continue;
4029
4030 ieee80211_extend_noa_desc(data, tsf, i);
4031 start = data->desc[i].start - tsf;
4032 if (start <= 0)
4033 data->absent |= BIT(i);
4034
4035 if (next_offset > start)
4036 next_offset = start;
4037
4038 data->has_next_tsf = true;
4039 }
4040
4041 if (data->absent)
4042 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4043
4044 data->next_tsf = tsf + next_offset;
4045}
4046EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4047
4048int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4049 struct ieee80211_noa_data *data, u32 tsf)
4050{
4051 int ret = 0;
4052 int i;
4053
4054 memset(data, 0, sizeof(*data));
4055
4056 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4057 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4058
4059 if (!desc->count || !desc->duration)
4060 continue;
4061
4062 data->count[i] = desc->count;
4063 data->desc[i].start = le32_to_cpu(desc->start_time);
4064 data->desc[i].duration = le32_to_cpu(desc->duration);
4065 data->desc[i].interval = le32_to_cpu(desc->interval);
4066
4067 if (data->count[i] > 1 &&
4068 data->desc[i].interval < data->desc[i].duration)
4069 continue;
4070
4071 ieee80211_extend_noa_desc(data, tsf, i);
4072 ret++;
4073 }
4074
4075 if (ret)
4076 ieee80211_update_p2p_noa(data, tsf);
4077
4078 return ret;
4079}
4080EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4081
4082void ieee80211_recalc_dtim(struct ieee80211_local *local,
4083 struct ieee80211_sub_if_data *sdata)
4084{
4085 u64 tsf = drv_get_tsf(local, sdata);
4086 u64 dtim_count = 0;
4087 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4088 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4089 struct ps_data *ps;
4090 u8 bcns_from_dtim;
4091
4092 if (tsf == -1ULL || !beacon_int || !dtim_period)
4093 return;
4094
4095 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4096 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4097 if (!sdata->bss)
4098 return;
4099
4100 ps = &sdata->bss->ps;
4101 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4102 ps = &sdata->u.mesh.ps;
4103 } else {
4104 return;
4105 }
4106
4107
4108
4109
4110
4111
4112 do_div(tsf, beacon_int);
4113 bcns_from_dtim = do_div(tsf, dtim_period);
4114
4115 if (!bcns_from_dtim)
4116 dtim_count = 0;
4117 else
4118 dtim_count = dtim_period - bcns_from_dtim;
4119
4120 ps->dtim_count = dtim_count;
4121}
4122
4123static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4124 struct ieee80211_chanctx *ctx)
4125{
4126 struct ieee80211_sub_if_data *sdata;
4127 u8 radar_detect = 0;
4128
4129 lockdep_assert_held(&local->chanctx_mtx);
4130
4131 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4132 return 0;
4133
4134 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4135 if (sdata->reserved_radar_required)
4136 radar_detect |= BIT(sdata->reserved_chandef.width);
4137
4138
4139
4140
4141
4142 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4143 !list_empty(&ctx->assigned_vifs));
4144
4145 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4146 if (sdata->radar_required)
4147 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4148
4149 return radar_detect;
4150}
4151
4152int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4153 const struct cfg80211_chan_def *chandef,
4154 enum ieee80211_chanctx_mode chanmode,
4155 u8 radar_detect)
4156{
4157 struct ieee80211_local *local = sdata->local;
4158 struct ieee80211_sub_if_data *sdata_iter;
4159 enum nl80211_iftype iftype = sdata->wdev.iftype;
4160 struct ieee80211_chanctx *ctx;
4161 int total = 1;
4162 struct iface_combination_params params = {
4163 .radar_detect = radar_detect,
4164 };
4165
4166 lockdep_assert_held(&local->chanctx_mtx);
4167
4168 if (WARN_ON(hweight32(radar_detect) > 1))
4169 return -EINVAL;
4170
4171 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4172 !chandef->chan))
4173 return -EINVAL;
4174
4175 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4176 return -EINVAL;
4177
4178 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4179 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4180
4181
4182
4183
4184
4185 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4186 }
4187
4188
4189 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4190 if (radar_detect)
4191 return -EINVAL;
4192 return 0;
4193 }
4194
4195 if (chandef)
4196 params.num_different_channels = 1;
4197
4198 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4199 params.iftype_num[iftype] = 1;
4200
4201 list_for_each_entry(ctx, &local->chanctx_list, list) {
4202 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4203 continue;
4204 params.radar_detect |=
4205 ieee80211_chanctx_radar_detect(local, ctx);
4206 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4207 params.num_different_channels++;
4208 continue;
4209 }
4210 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4211 cfg80211_chandef_compatible(chandef,
4212 &ctx->conf.def))
4213 continue;
4214 params.num_different_channels++;
4215 }
4216
4217 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4218 struct wireless_dev *wdev_iter;
4219
4220 wdev_iter = &sdata_iter->wdev;
4221
4222 if (sdata_iter == sdata ||
4223 !ieee80211_sdata_running(sdata_iter) ||
4224 cfg80211_iftype_allowed(local->hw.wiphy,
4225 wdev_iter->iftype, 0, 1))
4226 continue;
4227
4228 params.iftype_num[wdev_iter->iftype]++;
4229 total++;
4230 }
4231
4232 if (total == 1 && !params.radar_detect)
4233 return 0;
4234
4235 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4236}
4237
4238static void
4239ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4240 void *data)
4241{
4242 u32 *max_num_different_channels = data;
4243
4244 *max_num_different_channels = max(*max_num_different_channels,
4245 c->num_different_channels);
4246}
4247
4248int ieee80211_max_num_channels(struct ieee80211_local *local)
4249{
4250 struct ieee80211_sub_if_data *sdata;
4251 struct ieee80211_chanctx *ctx;
4252 u32 max_num_different_channels = 1;
4253 int err;
4254 struct iface_combination_params params = {0};
4255
4256 lockdep_assert_held(&local->chanctx_mtx);
4257
4258 list_for_each_entry(ctx, &local->chanctx_list, list) {
4259 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4260 continue;
4261
4262 params.num_different_channels++;
4263
4264 params.radar_detect |=
4265 ieee80211_chanctx_radar_detect(local, ctx);
4266 }
4267
4268 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4269 params.iftype_num[sdata->wdev.iftype]++;
4270
4271 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4272 ieee80211_iter_max_chans,
4273 &max_num_different_channels);
4274 if (err < 0)
4275 return err;
4276
4277 return max_num_different_channels;
4278}
4279
4280u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4281{
4282 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4283 *buf++ = 7;
4284 *buf++ = 0x00;
4285 *buf++ = 0x50;
4286 *buf++ = 0xf2;
4287 *buf++ = 2;
4288 *buf++ = 0;
4289 *buf++ = 1;
4290 *buf++ = qosinfo;
4291
4292 return buf;
4293}
4294
4295void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4296 unsigned long *frame_cnt,
4297 unsigned long *byte_cnt)
4298{
4299 struct txq_info *txqi = to_txq_info(txq);
4300 u32 frag_cnt = 0, frag_bytes = 0;
4301 struct sk_buff *skb;
4302
4303 skb_queue_walk(&txqi->frags, skb) {
4304 frag_cnt++;
4305 frag_bytes += skb->len;
4306 }
4307
4308 if (frame_cnt)
4309 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4310
4311 if (byte_cnt)
4312 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4313}
4314EXPORT_SYMBOL(ieee80211_txq_get_depth);
4315
4316const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4317 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4318 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4319 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4320 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4321};
4322