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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005-2006, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2013-2014 Intel Mobile Communications GmbH
8 * Copyright (C) 2015-2017 Intel Deutschland GmbH
9 * Copyright (C) 2018-2021 Intel Corporation
10 *
11 * utilities for mac80211
12 */
13
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/* privid for wiphys to determine whether they belong to us or not */
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
48u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
49 enum nl80211_iftype type)
50{
51 __le16 fc = hdr->frame_control;
52
53 if (ieee80211_is_data(fc)) {
54 if (len < 24) /* drop incorrect hdr len (data) */
55 return NULL;
56
57 if (ieee80211_has_a4(fc))
58 return NULL;
59 if (ieee80211_has_tods(fc))
60 return hdr->addr1;
61 if (ieee80211_has_fromds(fc))
62 return hdr->addr2;
63
64 return hdr->addr3;
65 }
66
67 if (ieee80211_is_s1g_beacon(fc)) {
68 struct ieee80211_ext *ext = (void *) hdr;
69
70 return ext->u.s1g_beacon.sa;
71 }
72
73 if (ieee80211_is_mgmt(fc)) {
74 if (len < 24) /* drop incorrect hdr len (mgmt) */
75 return NULL;
76 return hdr->addr3;
77 }
78
79 if (ieee80211_is_ctl(fc)) {
80 if (ieee80211_is_pspoll(fc))
81 return hdr->addr1;
82
83 if (ieee80211_is_back_req(fc)) {
84 switch (type) {
85 case NL80211_IFTYPE_STATION:
86 return hdr->addr2;
87 case NL80211_IFTYPE_AP:
88 case NL80211_IFTYPE_AP_VLAN:
89 return hdr->addr1;
90 default:
91 break; /* fall through to the return */
92 }
93 }
94 }
95
96 return NULL;
97}
98EXPORT_SYMBOL(ieee80211_get_bssid);
99
100void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
101{
102 struct sk_buff *skb;
103 struct ieee80211_hdr *hdr;
104
105 skb_queue_walk(&tx->skbs, skb) {
106 hdr = (struct ieee80211_hdr *) skb->data;
107 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
108 }
109}
110
111int ieee80211_frame_duration(enum nl80211_band band, size_t len,
112 int rate, int erp, int short_preamble,
113 int shift)
114{
115 int dur;
116
117 /* calculate duration (in microseconds, rounded up to next higher
118 * integer if it includes a fractional microsecond) to send frame of
119 * len bytes (does not include FCS) at the given rate. Duration will
120 * also include SIFS.
121 *
122 * rate is in 100 kbps, so divident is multiplied by 10 in the
123 * DIV_ROUND_UP() operations.
124 *
125 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
126 * is assumed to be 0 otherwise.
127 */
128
129 if (band == NL80211_BAND_5GHZ || erp) {
130 /*
131 * OFDM:
132 *
133 * N_DBPS = DATARATE x 4
134 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
135 * (16 = SIGNAL time, 6 = tail bits)
136 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
137 *
138 * T_SYM = 4 usec
139 * 802.11a - 18.5.2: aSIFSTime = 16 usec
140 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
141 * signal ext = 6 usec
142 */
143 dur = 16; /* SIFS + signal ext */
144 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
145 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
146
147 /* IEEE 802.11-2012 18.3.2.4: all values above are:
148 * * times 4 for 5 MHz
149 * * times 2 for 10 MHz
150 */
151 dur *= 1 << shift;
152
153 /* rates should already consider the channel bandwidth,
154 * don't apply divisor again.
155 */
156 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
157 4 * rate); /* T_SYM x N_SYM */
158 } else {
159 /*
160 * 802.11b or 802.11g with 802.11b compatibility:
161 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
162 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
163 *
164 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
165 * aSIFSTime = 10 usec
166 * aPreambleLength = 144 usec or 72 usec with short preamble
167 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
168 */
169 dur = 10; /* aSIFSTime = 10 usec */
170 dur += short_preamble ? (72 + 24) : (144 + 48);
171
172 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
173 }
174
175 return dur;
176}
177
178/* Exported duration function for driver use */
179__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
180 struct ieee80211_vif *vif,
181 enum nl80211_band band,
182 size_t frame_len,
183 struct ieee80211_rate *rate)
184{
185 struct ieee80211_sub_if_data *sdata;
186 u16 dur;
187 int erp, shift = 0;
188 bool short_preamble = false;
189
190 erp = 0;
191 if (vif) {
192 sdata = vif_to_sdata(vif);
193 short_preamble = sdata->vif.bss_conf.use_short_preamble;
194 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
195 erp = rate->flags & IEEE80211_RATE_ERP_G;
196 shift = ieee80211_vif_get_shift(vif);
197 }
198
199 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
200 short_preamble, shift);
201
202 return cpu_to_le16(dur);
203}
204EXPORT_SYMBOL(ieee80211_generic_frame_duration);
205
206__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
207 struct ieee80211_vif *vif, size_t frame_len,
208 const struct ieee80211_tx_info *frame_txctl)
209{
210 struct ieee80211_local *local = hw_to_local(hw);
211 struct ieee80211_rate *rate;
212 struct ieee80211_sub_if_data *sdata;
213 bool short_preamble;
214 int erp, shift = 0, bitrate;
215 u16 dur;
216 struct ieee80211_supported_band *sband;
217
218 sband = local->hw.wiphy->bands[frame_txctl->band];
219
220 short_preamble = false;
221
222 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
223
224 erp = 0;
225 if (vif) {
226 sdata = vif_to_sdata(vif);
227 short_preamble = sdata->vif.bss_conf.use_short_preamble;
228 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
229 erp = rate->flags & IEEE80211_RATE_ERP_G;
230 shift = ieee80211_vif_get_shift(vif);
231 }
232
233 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
234
235 /* CTS duration */
236 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
237 erp, short_preamble, shift);
238 /* Data frame duration */
239 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
240 erp, short_preamble, shift);
241 /* ACK duration */
242 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
243 erp, short_preamble, shift);
244
245 return cpu_to_le16(dur);
246}
247EXPORT_SYMBOL(ieee80211_rts_duration);
248
249__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
250 struct ieee80211_vif *vif,
251 size_t frame_len,
252 const struct ieee80211_tx_info *frame_txctl)
253{
254 struct ieee80211_local *local = hw_to_local(hw);
255 struct ieee80211_rate *rate;
256 struct ieee80211_sub_if_data *sdata;
257 bool short_preamble;
258 int erp, shift = 0, bitrate;
259 u16 dur;
260 struct ieee80211_supported_band *sband;
261
262 sband = local->hw.wiphy->bands[frame_txctl->band];
263
264 short_preamble = false;
265
266 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
267 erp = 0;
268 if (vif) {
269 sdata = vif_to_sdata(vif);
270 short_preamble = sdata->vif.bss_conf.use_short_preamble;
271 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
272 erp = rate->flags & IEEE80211_RATE_ERP_G;
273 shift = ieee80211_vif_get_shift(vif);
274 }
275
276 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
277
278 /* Data frame duration */
279 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
280 erp, short_preamble, shift);
281 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
282 /* ACK duration */
283 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
284 erp, short_preamble, shift);
285 }
286
287 return cpu_to_le16(dur);
288}
289EXPORT_SYMBOL(ieee80211_ctstoself_duration);
290
291static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
292{
293 struct ieee80211_local *local = sdata->local;
294 struct ieee80211_vif *vif = &sdata->vif;
295 struct fq *fq = &local->fq;
296 struct ps_data *ps = NULL;
297 struct txq_info *txqi;
298 struct sta_info *sta;
299 int i;
300
301 local_bh_disable();
302 spin_lock(&fq->lock);
303
304 if (sdata->vif.type == NL80211_IFTYPE_AP)
305 ps = &sdata->bss->ps;
306
307 sdata->vif.txqs_stopped[ac] = false;
308
309 list_for_each_entry_rcu(sta, &local->sta_list, list) {
310 if (sdata != sta->sdata)
311 continue;
312
313 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
314 struct ieee80211_txq *txq = sta->sta.txq[i];
315
316 if (!txq)
317 continue;
318
319 txqi = to_txq_info(txq);
320
321 if (ac != txq->ac)
322 continue;
323
324 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
325 &txqi->flags))
326 continue;
327
328 spin_unlock(&fq->lock);
329 drv_wake_tx_queue(local, txqi);
330 spin_lock(&fq->lock);
331 }
332 }
333
334 if (!vif->txq)
335 goto out;
336
337 txqi = to_txq_info(vif->txq);
338
339 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
340 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
341 goto out;
342
343 spin_unlock(&fq->lock);
344
345 drv_wake_tx_queue(local, txqi);
346 local_bh_enable();
347 return;
348out:
349 spin_unlock(&fq->lock);
350 local_bh_enable();
351}
352
353static void
354__releases(&local->queue_stop_reason_lock)
355__acquires(&local->queue_stop_reason_lock)
356_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
357{
358 struct ieee80211_sub_if_data *sdata;
359 int n_acs = IEEE80211_NUM_ACS;
360 int i;
361
362 rcu_read_lock();
363
364 if (local->hw.queues < IEEE80211_NUM_ACS)
365 n_acs = 1;
366
367 for (i = 0; i < local->hw.queues; i++) {
368 if (local->queue_stop_reasons[i])
369 continue;
370
371 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
372 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
373 int ac;
374
375 for (ac = 0; ac < n_acs; ac++) {
376 int ac_queue = sdata->vif.hw_queue[ac];
377
378 if (ac_queue == i ||
379 sdata->vif.cab_queue == i)
380 __ieee80211_wake_txqs(sdata, ac);
381 }
382 }
383 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
384 }
385
386 rcu_read_unlock();
387}
388
389void ieee80211_wake_txqs(struct tasklet_struct *t)
390{
391 struct ieee80211_local *local = from_tasklet(local, t,
392 wake_txqs_tasklet);
393 unsigned long flags;
394
395 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
396 _ieee80211_wake_txqs(local, &flags);
397 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
398}
399
400void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
401{
402 struct ieee80211_sub_if_data *sdata;
403 int n_acs = IEEE80211_NUM_ACS;
404
405 if (local->ops->wake_tx_queue)
406 return;
407
408 if (local->hw.queues < IEEE80211_NUM_ACS)
409 n_acs = 1;
410
411 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
412 int ac;
413
414 if (!sdata->dev)
415 continue;
416
417 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
418 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
419 continue;
420
421 for (ac = 0; ac < n_acs; ac++) {
422 int ac_queue = sdata->vif.hw_queue[ac];
423
424 if (ac_queue == queue ||
425 (sdata->vif.cab_queue == queue &&
426 local->queue_stop_reasons[ac_queue] == 0 &&
427 skb_queue_empty(&local->pending[ac_queue])))
428 netif_wake_subqueue(sdata->dev, ac);
429 }
430 }
431}
432
433static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
434 enum queue_stop_reason reason,
435 bool refcounted,
436 unsigned long *flags)
437{
438 struct ieee80211_local *local = hw_to_local(hw);
439
440 trace_wake_queue(local, queue, reason);
441
442 if (WARN_ON(queue >= hw->queues))
443 return;
444
445 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
446 return;
447
448 if (!refcounted) {
449 local->q_stop_reasons[queue][reason] = 0;
450 } else {
451 local->q_stop_reasons[queue][reason]--;
452 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
453 local->q_stop_reasons[queue][reason] = 0;
454 }
455
456 if (local->q_stop_reasons[queue][reason] == 0)
457 __clear_bit(reason, &local->queue_stop_reasons[queue]);
458
459 if (local->queue_stop_reasons[queue] != 0)
460 /* someone still has this queue stopped */
461 return;
462
463 if (skb_queue_empty(&local->pending[queue])) {
464 rcu_read_lock();
465 ieee80211_propagate_queue_wake(local, queue);
466 rcu_read_unlock();
467 } else
468 tasklet_schedule(&local->tx_pending_tasklet);
469
470 /*
471 * Calling _ieee80211_wake_txqs here can be a problem because it may
472 * release queue_stop_reason_lock which has been taken by
473 * __ieee80211_wake_queue's caller. It is certainly not very nice to
474 * release someone's lock, but it is fine because all the callers of
475 * __ieee80211_wake_queue call it right before releasing the lock.
476 */
477 if (local->ops->wake_tx_queue) {
478 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
479 tasklet_schedule(&local->wake_txqs_tasklet);
480 else
481 _ieee80211_wake_txqs(local, flags);
482 }
483}
484
485void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
486 enum queue_stop_reason reason,
487 bool refcounted)
488{
489 struct ieee80211_local *local = hw_to_local(hw);
490 unsigned long flags;
491
492 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
493 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
494 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
495}
496
497void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
498{
499 ieee80211_wake_queue_by_reason(hw, queue,
500 IEEE80211_QUEUE_STOP_REASON_DRIVER,
501 false);
502}
503EXPORT_SYMBOL(ieee80211_wake_queue);
504
505static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
506 enum queue_stop_reason reason,
507 bool refcounted)
508{
509 struct ieee80211_local *local = hw_to_local(hw);
510 struct ieee80211_sub_if_data *sdata;
511 int n_acs = IEEE80211_NUM_ACS;
512
513 trace_stop_queue(local, queue, reason);
514
515 if (WARN_ON(queue >= hw->queues))
516 return;
517
518 if (!refcounted)
519 local->q_stop_reasons[queue][reason] = 1;
520 else
521 local->q_stop_reasons[queue][reason]++;
522
523 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
524 return;
525
526 if (local->hw.queues < IEEE80211_NUM_ACS)
527 n_acs = 1;
528
529 rcu_read_lock();
530 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
531 int ac;
532
533 if (!sdata->dev)
534 continue;
535
536 for (ac = 0; ac < n_acs; ac++) {
537 if (sdata->vif.hw_queue[ac] == queue ||
538 sdata->vif.cab_queue == queue) {
539 if (!local->ops->wake_tx_queue) {
540 netif_stop_subqueue(sdata->dev, ac);
541 continue;
542 }
543 spin_lock(&local->fq.lock);
544 sdata->vif.txqs_stopped[ac] = true;
545 spin_unlock(&local->fq.lock);
546 }
547 }
548 }
549 rcu_read_unlock();
550}
551
552void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
553 enum queue_stop_reason reason,
554 bool refcounted)
555{
556 struct ieee80211_local *local = hw_to_local(hw);
557 unsigned long flags;
558
559 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
560 __ieee80211_stop_queue(hw, queue, reason, refcounted);
561 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
562}
563
564void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
565{
566 ieee80211_stop_queue_by_reason(hw, queue,
567 IEEE80211_QUEUE_STOP_REASON_DRIVER,
568 false);
569}
570EXPORT_SYMBOL(ieee80211_stop_queue);
571
572void ieee80211_add_pending_skb(struct ieee80211_local *local,
573 struct sk_buff *skb)
574{
575 struct ieee80211_hw *hw = &local->hw;
576 unsigned long flags;
577 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
578 int queue = info->hw_queue;
579
580 if (WARN_ON(!info->control.vif)) {
581 ieee80211_free_txskb(&local->hw, skb);
582 return;
583 }
584
585 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
586 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
587 false);
588 __skb_queue_tail(&local->pending[queue], skb);
589 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
590 false, &flags);
591 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
592}
593
594void ieee80211_add_pending_skbs(struct ieee80211_local *local,
595 struct sk_buff_head *skbs)
596{
597 struct ieee80211_hw *hw = &local->hw;
598 struct sk_buff *skb;
599 unsigned long flags;
600 int queue, i;
601
602 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
603 while ((skb = skb_dequeue(skbs))) {
604 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
605
606 if (WARN_ON(!info->control.vif)) {
607 ieee80211_free_txskb(&local->hw, skb);
608 continue;
609 }
610
611 queue = info->hw_queue;
612
613 __ieee80211_stop_queue(hw, queue,
614 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
615 false);
616
617 __skb_queue_tail(&local->pending[queue], skb);
618 }
619
620 for (i = 0; i < hw->queues; i++)
621 __ieee80211_wake_queue(hw, i,
622 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
623 false, &flags);
624 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
625}
626
627void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
628 unsigned long queues,
629 enum queue_stop_reason reason,
630 bool refcounted)
631{
632 struct ieee80211_local *local = hw_to_local(hw);
633 unsigned long flags;
634 int i;
635
636 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
637
638 for_each_set_bit(i, &queues, hw->queues)
639 __ieee80211_stop_queue(hw, i, reason, refcounted);
640
641 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
642}
643
644void ieee80211_stop_queues(struct ieee80211_hw *hw)
645{
646 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
647 IEEE80211_QUEUE_STOP_REASON_DRIVER,
648 false);
649}
650EXPORT_SYMBOL(ieee80211_stop_queues);
651
652int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
653{
654 struct ieee80211_local *local = hw_to_local(hw);
655 unsigned long flags;
656 int ret;
657
658 if (WARN_ON(queue >= hw->queues))
659 return true;
660
661 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
662 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
663 &local->queue_stop_reasons[queue]);
664 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
665 return ret;
666}
667EXPORT_SYMBOL(ieee80211_queue_stopped);
668
669void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
670 unsigned long queues,
671 enum queue_stop_reason reason,
672 bool refcounted)
673{
674 struct ieee80211_local *local = hw_to_local(hw);
675 unsigned long flags;
676 int i;
677
678 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
679
680 for_each_set_bit(i, &queues, hw->queues)
681 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
682
683 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
684}
685
686void ieee80211_wake_queues(struct ieee80211_hw *hw)
687{
688 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
689 IEEE80211_QUEUE_STOP_REASON_DRIVER,
690 false);
691}
692EXPORT_SYMBOL(ieee80211_wake_queues);
693
694static unsigned int
695ieee80211_get_vif_queues(struct ieee80211_local *local,
696 struct ieee80211_sub_if_data *sdata)
697{
698 unsigned int queues;
699
700 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
701 int ac;
702
703 queues = 0;
704
705 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
706 queues |= BIT(sdata->vif.hw_queue[ac]);
707 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
708 queues |= BIT(sdata->vif.cab_queue);
709 } else {
710 /* all queues */
711 queues = BIT(local->hw.queues) - 1;
712 }
713
714 return queues;
715}
716
717void __ieee80211_flush_queues(struct ieee80211_local *local,
718 struct ieee80211_sub_if_data *sdata,
719 unsigned int queues, bool drop)
720{
721 if (!local->ops->flush)
722 return;
723
724 /*
725 * If no queue was set, or if the HW doesn't support
726 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
727 */
728 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
729 queues = ieee80211_get_vif_queues(local, sdata);
730
731 ieee80211_stop_queues_by_reason(&local->hw, queues,
732 IEEE80211_QUEUE_STOP_REASON_FLUSH,
733 false);
734
735 drv_flush(local, sdata, queues, drop);
736
737 ieee80211_wake_queues_by_reason(&local->hw, queues,
738 IEEE80211_QUEUE_STOP_REASON_FLUSH,
739 false);
740}
741
742void ieee80211_flush_queues(struct ieee80211_local *local,
743 struct ieee80211_sub_if_data *sdata, bool drop)
744{
745 __ieee80211_flush_queues(local, sdata, 0, drop);
746}
747
748void ieee80211_stop_vif_queues(struct ieee80211_local *local,
749 struct ieee80211_sub_if_data *sdata,
750 enum queue_stop_reason reason)
751{
752 ieee80211_stop_queues_by_reason(&local->hw,
753 ieee80211_get_vif_queues(local, sdata),
754 reason, true);
755}
756
757void ieee80211_wake_vif_queues(struct ieee80211_local *local,
758 struct ieee80211_sub_if_data *sdata,
759 enum queue_stop_reason reason)
760{
761 ieee80211_wake_queues_by_reason(&local->hw,
762 ieee80211_get_vif_queues(local, sdata),
763 reason, true);
764}
765
766static void __iterate_interfaces(struct ieee80211_local *local,
767 u32 iter_flags,
768 void (*iterator)(void *data, u8 *mac,
769 struct ieee80211_vif *vif),
770 void *data)
771{
772 struct ieee80211_sub_if_data *sdata;
773 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
774
775 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
776 switch (sdata->vif.type) {
777 case NL80211_IFTYPE_MONITOR:
778 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
779 continue;
780 break;
781 case NL80211_IFTYPE_AP_VLAN:
782 continue;
783 default:
784 break;
785 }
786 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
787 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
788 continue;
789 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
790 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
791 continue;
792 if (ieee80211_sdata_running(sdata) || !active_only)
793 iterator(data, sdata->vif.addr,
794 &sdata->vif);
795 }
796
797 sdata = rcu_dereference_check(local->monitor_sdata,
798 lockdep_is_held(&local->iflist_mtx) ||
799 lockdep_rtnl_is_held());
800 if (sdata &&
801 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
802 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
803 iterator(data, sdata->vif.addr, &sdata->vif);
804}
805
806void ieee80211_iterate_interfaces(
807 struct ieee80211_hw *hw, u32 iter_flags,
808 void (*iterator)(void *data, u8 *mac,
809 struct ieee80211_vif *vif),
810 void *data)
811{
812 struct ieee80211_local *local = hw_to_local(hw);
813
814 mutex_lock(&local->iflist_mtx);
815 __iterate_interfaces(local, iter_flags, iterator, data);
816 mutex_unlock(&local->iflist_mtx);
817}
818EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
819
820void ieee80211_iterate_active_interfaces_atomic(
821 struct ieee80211_hw *hw, u32 iter_flags,
822 void (*iterator)(void *data, u8 *mac,
823 struct ieee80211_vif *vif),
824 void *data)
825{
826 struct ieee80211_local *local = hw_to_local(hw);
827
828 rcu_read_lock();
829 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
830 iterator, data);
831 rcu_read_unlock();
832}
833EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
834
835void ieee80211_iterate_active_interfaces_mtx(
836 struct ieee80211_hw *hw, u32 iter_flags,
837 void (*iterator)(void *data, u8 *mac,
838 struct ieee80211_vif *vif),
839 void *data)
840{
841 struct ieee80211_local *local = hw_to_local(hw);
842
843 lockdep_assert_wiphy(hw->wiphy);
844
845 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
846 iterator, data);
847}
848EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
849
850static void __iterate_stations(struct ieee80211_local *local,
851 void (*iterator)(void *data,
852 struct ieee80211_sta *sta),
853 void *data)
854{
855 struct sta_info *sta;
856
857 list_for_each_entry_rcu(sta, &local->sta_list, list) {
858 if (!sta->uploaded)
859 continue;
860
861 iterator(data, &sta->sta);
862 }
863}
864
865void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
866 void (*iterator)(void *data,
867 struct ieee80211_sta *sta),
868 void *data)
869{
870 struct ieee80211_local *local = hw_to_local(hw);
871
872 rcu_read_lock();
873 __iterate_stations(local, iterator, data);
874 rcu_read_unlock();
875}
876EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
877
878struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
879{
880 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
881
882 if (!ieee80211_sdata_running(sdata) ||
883 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
884 return NULL;
885 return &sdata->vif;
886}
887EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
888
889struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
890{
891 if (!vif)
892 return NULL;
893
894 return &vif_to_sdata(vif)->wdev;
895}
896EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
897
898/*
899 * Nothing should have been stuffed into the workqueue during
900 * the suspend->resume cycle. Since we can't check each caller
901 * of this function if we are already quiescing / suspended,
902 * check here and don't WARN since this can actually happen when
903 * the rx path (for example) is racing against __ieee80211_suspend
904 * and suspending / quiescing was set after the rx path checked
905 * them.
906 */
907static bool ieee80211_can_queue_work(struct ieee80211_local *local)
908{
909 if (local->quiescing || (local->suspended && !local->resuming)) {
910 pr_warn("queueing ieee80211 work while going to suspend\n");
911 return false;
912 }
913
914 return true;
915}
916
917void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
918{
919 struct ieee80211_local *local = hw_to_local(hw);
920
921 if (!ieee80211_can_queue_work(local))
922 return;
923
924 queue_work(local->workqueue, work);
925}
926EXPORT_SYMBOL(ieee80211_queue_work);
927
928void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
929 struct delayed_work *dwork,
930 unsigned long delay)
931{
932 struct ieee80211_local *local = hw_to_local(hw);
933
934 if (!ieee80211_can_queue_work(local))
935 return;
936
937 queue_delayed_work(local->workqueue, dwork, delay);
938}
939EXPORT_SYMBOL(ieee80211_queue_delayed_work);
940
941static void ieee80211_parse_extension_element(u32 *crc,
942 const struct element *elem,
943 struct ieee802_11_elems *elems)
944{
945 const void *data = elem->data + 1;
946 u8 len = elem->datalen - 1;
947
948 switch (elem->data[0]) {
949 case WLAN_EID_EXT_HE_MU_EDCA:
950 if (len >= sizeof(*elems->mu_edca_param_set)) {
951 elems->mu_edca_param_set = data;
952 if (crc)
953 *crc = crc32_be(*crc, (void *)elem,
954 elem->datalen + 2);
955 }
956 break;
957 case WLAN_EID_EXT_HE_CAPABILITY:
958 elems->he_cap = data;
959 elems->he_cap_len = len;
960 break;
961 case WLAN_EID_EXT_HE_OPERATION:
962 if (len >= sizeof(*elems->he_operation) &&
963 len >= ieee80211_he_oper_size(data) - 1) {
964 if (crc)
965 *crc = crc32_be(*crc, (void *)elem,
966 elem->datalen + 2);
967 elems->he_operation = data;
968 }
969 break;
970 case WLAN_EID_EXT_UORA:
971 if (len >= 1)
972 elems->uora_element = data;
973 break;
974 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
975 if (len == 3)
976 elems->max_channel_switch_time = data;
977 break;
978 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
979 if (len >= sizeof(*elems->mbssid_config_ie))
980 elems->mbssid_config_ie = data;
981 break;
982 case WLAN_EID_EXT_HE_SPR:
983 if (len >= sizeof(*elems->he_spr) &&
984 len >= ieee80211_he_spr_size(data))
985 elems->he_spr = data;
986 break;
987 case WLAN_EID_EXT_HE_6GHZ_CAPA:
988 if (len >= sizeof(*elems->he_6ghz_capa))
989 elems->he_6ghz_capa = data;
990 break;
991 }
992}
993
994static u32
995_ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
996 struct ieee802_11_elems *elems,
997 u64 filter, u32 crc,
998 const struct element *check_inherit)
999{
1000 const struct element *elem;
1001 bool calc_crc = filter != 0;
1002 DECLARE_BITMAP(seen_elems, 256);
1003 const u8 *ie;
1004
1005 bitmap_zero(seen_elems, 256);
1006
1007 for_each_element(elem, start, len) {
1008 bool elem_parse_failed;
1009 u8 id = elem->id;
1010 u8 elen = elem->datalen;
1011 const u8 *pos = elem->data;
1012
1013 if (check_inherit &&
1014 !cfg80211_is_element_inherited(elem,
1015 check_inherit))
1016 continue;
1017
1018 switch (id) {
1019 case WLAN_EID_SSID:
1020 case WLAN_EID_SUPP_RATES:
1021 case WLAN_EID_FH_PARAMS:
1022 case WLAN_EID_DS_PARAMS:
1023 case WLAN_EID_CF_PARAMS:
1024 case WLAN_EID_TIM:
1025 case WLAN_EID_IBSS_PARAMS:
1026 case WLAN_EID_CHALLENGE:
1027 case WLAN_EID_RSN:
1028 case WLAN_EID_ERP_INFO:
1029 case WLAN_EID_EXT_SUPP_RATES:
1030 case WLAN_EID_HT_CAPABILITY:
1031 case WLAN_EID_HT_OPERATION:
1032 case WLAN_EID_VHT_CAPABILITY:
1033 case WLAN_EID_VHT_OPERATION:
1034 case WLAN_EID_MESH_ID:
1035 case WLAN_EID_MESH_CONFIG:
1036 case WLAN_EID_PEER_MGMT:
1037 case WLAN_EID_PREQ:
1038 case WLAN_EID_PREP:
1039 case WLAN_EID_PERR:
1040 case WLAN_EID_RANN:
1041 case WLAN_EID_CHANNEL_SWITCH:
1042 case WLAN_EID_EXT_CHANSWITCH_ANN:
1043 case WLAN_EID_COUNTRY:
1044 case WLAN_EID_PWR_CONSTRAINT:
1045 case WLAN_EID_TIMEOUT_INTERVAL:
1046 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1047 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1048 case WLAN_EID_CHAN_SWITCH_PARAM:
1049 case WLAN_EID_EXT_CAPABILITY:
1050 case WLAN_EID_CHAN_SWITCH_TIMING:
1051 case WLAN_EID_LINK_ID:
1052 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1053 case WLAN_EID_RSNX:
1054 case WLAN_EID_S1G_BCN_COMPAT:
1055 case WLAN_EID_S1G_CAPABILITIES:
1056 case WLAN_EID_S1G_OPERATION:
1057 case WLAN_EID_AID_RESPONSE:
1058 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1059 /*
1060 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1061 * that if the content gets bigger it might be needed more than once
1062 */
1063 if (test_bit(id, seen_elems)) {
1064 elems->parse_error = true;
1065 continue;
1066 }
1067 break;
1068 }
1069
1070 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1071 crc = crc32_be(crc, pos - 2, elen + 2);
1072
1073 elem_parse_failed = false;
1074
1075 switch (id) {
1076 case WLAN_EID_LINK_ID:
1077 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1078 elem_parse_failed = true;
1079 break;
1080 }
1081 elems->lnk_id = (void *)(pos - 2);
1082 break;
1083 case WLAN_EID_CHAN_SWITCH_TIMING:
1084 if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1085 elem_parse_failed = true;
1086 break;
1087 }
1088 elems->ch_sw_timing = (void *)pos;
1089 break;
1090 case WLAN_EID_EXT_CAPABILITY:
1091 elems->ext_capab = pos;
1092 elems->ext_capab_len = elen;
1093 break;
1094 case WLAN_EID_SSID:
1095 elems->ssid = pos;
1096 elems->ssid_len = elen;
1097 break;
1098 case WLAN_EID_SUPP_RATES:
1099 elems->supp_rates = pos;
1100 elems->supp_rates_len = elen;
1101 break;
1102 case WLAN_EID_DS_PARAMS:
1103 if (elen >= 1)
1104 elems->ds_params = pos;
1105 else
1106 elem_parse_failed = true;
1107 break;
1108 case WLAN_EID_TIM:
1109 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1110 elems->tim = (void *)pos;
1111 elems->tim_len = elen;
1112 } else
1113 elem_parse_failed = true;
1114 break;
1115 case WLAN_EID_CHALLENGE:
1116 elems->challenge = pos;
1117 elems->challenge_len = elen;
1118 break;
1119 case WLAN_EID_VENDOR_SPECIFIC:
1120 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1121 pos[2] == 0xf2) {
1122 /* Microsoft OUI (00:50:F2) */
1123
1124 if (calc_crc)
1125 crc = crc32_be(crc, pos - 2, elen + 2);
1126
1127 if (elen >= 5 && pos[3] == 2) {
1128 /* OUI Type 2 - WMM IE */
1129 if (pos[4] == 0) {
1130 elems->wmm_info = pos;
1131 elems->wmm_info_len = elen;
1132 } else if (pos[4] == 1) {
1133 elems->wmm_param = pos;
1134 elems->wmm_param_len = elen;
1135 }
1136 }
1137 }
1138 break;
1139 case WLAN_EID_RSN:
1140 elems->rsn = pos;
1141 elems->rsn_len = elen;
1142 break;
1143 case WLAN_EID_ERP_INFO:
1144 if (elen >= 1)
1145 elems->erp_info = pos;
1146 else
1147 elem_parse_failed = true;
1148 break;
1149 case WLAN_EID_EXT_SUPP_RATES:
1150 elems->ext_supp_rates = pos;
1151 elems->ext_supp_rates_len = elen;
1152 break;
1153 case WLAN_EID_HT_CAPABILITY:
1154 if (elen >= sizeof(struct ieee80211_ht_cap))
1155 elems->ht_cap_elem = (void *)pos;
1156 else
1157 elem_parse_failed = true;
1158 break;
1159 case WLAN_EID_HT_OPERATION:
1160 if (elen >= sizeof(struct ieee80211_ht_operation))
1161 elems->ht_operation = (void *)pos;
1162 else
1163 elem_parse_failed = true;
1164 break;
1165 case WLAN_EID_VHT_CAPABILITY:
1166 if (elen >= sizeof(struct ieee80211_vht_cap))
1167 elems->vht_cap_elem = (void *)pos;
1168 else
1169 elem_parse_failed = true;
1170 break;
1171 case WLAN_EID_VHT_OPERATION:
1172 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1173 elems->vht_operation = (void *)pos;
1174 if (calc_crc)
1175 crc = crc32_be(crc, pos - 2, elen + 2);
1176 break;
1177 }
1178 elem_parse_failed = true;
1179 break;
1180 case WLAN_EID_OPMODE_NOTIF:
1181 if (elen > 0) {
1182 elems->opmode_notif = pos;
1183 if (calc_crc)
1184 crc = crc32_be(crc, pos - 2, elen + 2);
1185 break;
1186 }
1187 elem_parse_failed = true;
1188 break;
1189 case WLAN_EID_MESH_ID:
1190 elems->mesh_id = pos;
1191 elems->mesh_id_len = elen;
1192 break;
1193 case WLAN_EID_MESH_CONFIG:
1194 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1195 elems->mesh_config = (void *)pos;
1196 else
1197 elem_parse_failed = true;
1198 break;
1199 case WLAN_EID_PEER_MGMT:
1200 elems->peering = pos;
1201 elems->peering_len = elen;
1202 break;
1203 case WLAN_EID_MESH_AWAKE_WINDOW:
1204 if (elen >= 2)
1205 elems->awake_window = (void *)pos;
1206 break;
1207 case WLAN_EID_PREQ:
1208 elems->preq = pos;
1209 elems->preq_len = elen;
1210 break;
1211 case WLAN_EID_PREP:
1212 elems->prep = pos;
1213 elems->prep_len = elen;
1214 break;
1215 case WLAN_EID_PERR:
1216 elems->perr = pos;
1217 elems->perr_len = elen;
1218 break;
1219 case WLAN_EID_RANN:
1220 if (elen >= sizeof(struct ieee80211_rann_ie))
1221 elems->rann = (void *)pos;
1222 else
1223 elem_parse_failed = true;
1224 break;
1225 case WLAN_EID_CHANNEL_SWITCH:
1226 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1227 elem_parse_failed = true;
1228 break;
1229 }
1230 elems->ch_switch_ie = (void *)pos;
1231 break;
1232 case WLAN_EID_EXT_CHANSWITCH_ANN:
1233 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1234 elem_parse_failed = true;
1235 break;
1236 }
1237 elems->ext_chansw_ie = (void *)pos;
1238 break;
1239 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1240 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1241 elem_parse_failed = true;
1242 break;
1243 }
1244 elems->sec_chan_offs = (void *)pos;
1245 break;
1246 case WLAN_EID_CHAN_SWITCH_PARAM:
1247 if (elen <
1248 sizeof(*elems->mesh_chansw_params_ie)) {
1249 elem_parse_failed = true;
1250 break;
1251 }
1252 elems->mesh_chansw_params_ie = (void *)pos;
1253 break;
1254 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1255 if (!action ||
1256 elen < sizeof(*elems->wide_bw_chansw_ie)) {
1257 elem_parse_failed = true;
1258 break;
1259 }
1260 elems->wide_bw_chansw_ie = (void *)pos;
1261 break;
1262 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1263 if (action) {
1264 elem_parse_failed = true;
1265 break;
1266 }
1267 /*
1268 * This is a bit tricky, but as we only care about
1269 * the wide bandwidth channel switch element, so
1270 * just parse it out manually.
1271 */
1272 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1273 pos, elen);
1274 if (ie) {
1275 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1276 elems->wide_bw_chansw_ie =
1277 (void *)(ie + 2);
1278 else
1279 elem_parse_failed = true;
1280 }
1281 break;
1282 case WLAN_EID_COUNTRY:
1283 elems->country_elem = pos;
1284 elems->country_elem_len = elen;
1285 break;
1286 case WLAN_EID_PWR_CONSTRAINT:
1287 if (elen != 1) {
1288 elem_parse_failed = true;
1289 break;
1290 }
1291 elems->pwr_constr_elem = pos;
1292 break;
1293 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1294 /* Lots of different options exist, but we only care
1295 * about the Dynamic Transmit Power Control element.
1296 * First check for the Cisco OUI, then for the DTPC
1297 * tag (0x00).
1298 */
1299 if (elen < 4) {
1300 elem_parse_failed = true;
1301 break;
1302 }
1303
1304 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1305 pos[2] != 0x96 || pos[3] != 0x00)
1306 break;
1307
1308 if (elen != 6) {
1309 elem_parse_failed = true;
1310 break;
1311 }
1312
1313 if (calc_crc)
1314 crc = crc32_be(crc, pos - 2, elen + 2);
1315
1316 elems->cisco_dtpc_elem = pos;
1317 break;
1318 case WLAN_EID_ADDBA_EXT:
1319 if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1320 elem_parse_failed = true;
1321 break;
1322 }
1323 elems->addba_ext_ie = (void *)pos;
1324 break;
1325 case WLAN_EID_TIMEOUT_INTERVAL:
1326 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1327 elems->timeout_int = (void *)pos;
1328 else
1329 elem_parse_failed = true;
1330 break;
1331 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1332 if (elen >= sizeof(*elems->max_idle_period_ie))
1333 elems->max_idle_period_ie = (void *)pos;
1334 break;
1335 case WLAN_EID_RSNX:
1336 elems->rsnx = pos;
1337 elems->rsnx_len = elen;
1338 break;
1339 case WLAN_EID_EXTENSION:
1340 ieee80211_parse_extension_element(calc_crc ?
1341 &crc : NULL,
1342 elem, elems);
1343 break;
1344 case WLAN_EID_S1G_CAPABILITIES:
1345 if (elen >= sizeof(*elems->s1g_capab))
1346 elems->s1g_capab = (void *)pos;
1347 else
1348 elem_parse_failed = true;
1349 break;
1350 case WLAN_EID_S1G_OPERATION:
1351 if (elen == sizeof(*elems->s1g_oper))
1352 elems->s1g_oper = (void *)pos;
1353 else
1354 elem_parse_failed = true;
1355 break;
1356 case WLAN_EID_S1G_BCN_COMPAT:
1357 if (elen == sizeof(*elems->s1g_bcn_compat))
1358 elems->s1g_bcn_compat = (void *)pos;
1359 else
1360 elem_parse_failed = true;
1361 break;
1362 case WLAN_EID_AID_RESPONSE:
1363 if (elen == sizeof(struct ieee80211_aid_response_ie))
1364 elems->aid_resp = (void *)pos;
1365 else
1366 elem_parse_failed = true;
1367 break;
1368 default:
1369 break;
1370 }
1371
1372 if (elem_parse_failed)
1373 elems->parse_error = true;
1374 else
1375 __set_bit(id, seen_elems);
1376 }
1377
1378 if (!for_each_element_completed(elem, start, len))
1379 elems->parse_error = true;
1380
1381 return crc;
1382}
1383
1384static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1385 struct ieee802_11_elems *elems,
1386 u8 *transmitter_bssid,
1387 u8 *bss_bssid,
1388 u8 *nontransmitted_profile)
1389{
1390 const struct element *elem, *sub;
1391 size_t profile_len = 0;
1392 bool found = false;
1393
1394 if (!bss_bssid || !transmitter_bssid)
1395 return profile_len;
1396
1397 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1398 if (elem->datalen < 2)
1399 continue;
1400
1401 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1402 u8 new_bssid[ETH_ALEN];
1403 const u8 *index;
1404
1405 if (sub->id != 0 || sub->datalen < 4) {
1406 /* not a valid BSS profile */
1407 continue;
1408 }
1409
1410 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1411 sub->data[1] != 2) {
1412 /* The first element of the
1413 * Nontransmitted BSSID Profile is not
1414 * the Nontransmitted BSSID Capability
1415 * element.
1416 */
1417 continue;
1418 }
1419
1420 memset(nontransmitted_profile, 0, len);
1421 profile_len = cfg80211_merge_profile(start, len,
1422 elem,
1423 sub,
1424 nontransmitted_profile,
1425 len);
1426
1427 /* found a Nontransmitted BSSID Profile */
1428 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1429 nontransmitted_profile,
1430 profile_len);
1431 if (!index || index[1] < 1 || index[2] == 0) {
1432 /* Invalid MBSSID Index element */
1433 continue;
1434 }
1435
1436 cfg80211_gen_new_bssid(transmitter_bssid,
1437 elem->data[0],
1438 index[2],
1439 new_bssid);
1440 if (ether_addr_equal(new_bssid, bss_bssid)) {
1441 found = true;
1442 elems->bssid_index_len = index[1];
1443 elems->bssid_index = (void *)&index[2];
1444 break;
1445 }
1446 }
1447 }
1448
1449 return found ? profile_len : 0;
1450}
1451
1452u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1453 struct ieee802_11_elems *elems,
1454 u64 filter, u32 crc, u8 *transmitter_bssid,
1455 u8 *bss_bssid)
1456{
1457 const struct element *non_inherit = NULL;
1458 u8 *nontransmitted_profile;
1459 int nontransmitted_profile_len = 0;
1460
1461 memset(elems, 0, sizeof(*elems));
1462 elems->ie_start = start;
1463 elems->total_len = len;
1464
1465 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1466 if (nontransmitted_profile) {
1467 nontransmitted_profile_len =
1468 ieee802_11_find_bssid_profile(start, len, elems,
1469 transmitter_bssid,
1470 bss_bssid,
1471 nontransmitted_profile);
1472 non_inherit =
1473 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1474 nontransmitted_profile,
1475 nontransmitted_profile_len);
1476 }
1477
1478 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1479 crc, non_inherit);
1480
1481 /* Override with nontransmitted profile, if found */
1482 if (nontransmitted_profile_len)
1483 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1484 nontransmitted_profile_len,
1485 action, elems, 0, 0, NULL);
1486
1487 if (elems->tim && !elems->parse_error) {
1488 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1489
1490 elems->dtim_period = tim_ie->dtim_period;
1491 elems->dtim_count = tim_ie->dtim_count;
1492 }
1493
1494 /* Override DTIM period and count if needed */
1495 if (elems->bssid_index &&
1496 elems->bssid_index_len >=
1497 offsetofend(struct ieee80211_bssid_index, dtim_period))
1498 elems->dtim_period = elems->bssid_index->dtim_period;
1499
1500 if (elems->bssid_index &&
1501 elems->bssid_index_len >=
1502 offsetofend(struct ieee80211_bssid_index, dtim_count))
1503 elems->dtim_count = elems->bssid_index->dtim_count;
1504
1505 kfree(nontransmitted_profile);
1506
1507 return crc;
1508}
1509
1510void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1511 struct ieee80211_tx_queue_params
1512 *qparam, int ac)
1513{
1514 struct ieee80211_chanctx_conf *chanctx_conf;
1515 const struct ieee80211_reg_rule *rrule;
1516 const struct ieee80211_wmm_ac *wmm_ac;
1517 u16 center_freq = 0;
1518
1519 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1520 sdata->vif.type != NL80211_IFTYPE_STATION)
1521 return;
1522
1523 rcu_read_lock();
1524 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1525 if (chanctx_conf)
1526 center_freq = chanctx_conf->def.chan->center_freq;
1527
1528 if (!center_freq) {
1529 rcu_read_unlock();
1530 return;
1531 }
1532
1533 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1534
1535 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1536 rcu_read_unlock();
1537 return;
1538 }
1539
1540 if (sdata->vif.type == NL80211_IFTYPE_AP)
1541 wmm_ac = &rrule->wmm_rule.ap[ac];
1542 else
1543 wmm_ac = &rrule->wmm_rule.client[ac];
1544 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1545 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1546 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1547 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1548 rcu_read_unlock();
1549}
1550
1551void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1552 bool bss_notify, bool enable_qos)
1553{
1554 struct ieee80211_local *local = sdata->local;
1555 struct ieee80211_tx_queue_params qparam;
1556 struct ieee80211_chanctx_conf *chanctx_conf;
1557 int ac;
1558 bool use_11b;
1559 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1560 int aCWmin, aCWmax;
1561
1562 if (!local->ops->conf_tx)
1563 return;
1564
1565 if (local->hw.queues < IEEE80211_NUM_ACS)
1566 return;
1567
1568 memset(&qparam, 0, sizeof(qparam));
1569
1570 rcu_read_lock();
1571 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1572 use_11b = (chanctx_conf &&
1573 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1574 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1575 rcu_read_unlock();
1576
1577 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1578
1579 /* Set defaults according to 802.11-2007 Table 7-37 */
1580 aCWmax = 1023;
1581 if (use_11b)
1582 aCWmin = 31;
1583 else
1584 aCWmin = 15;
1585
1586 /* Confiure old 802.11b/g medium access rules. */
1587 qparam.cw_max = aCWmax;
1588 qparam.cw_min = aCWmin;
1589 qparam.txop = 0;
1590 qparam.aifs = 2;
1591
1592 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1593 /* Update if QoS is enabled. */
1594 if (enable_qos) {
1595 switch (ac) {
1596 case IEEE80211_AC_BK:
1597 qparam.cw_max = aCWmax;
1598 qparam.cw_min = aCWmin;
1599 qparam.txop = 0;
1600 if (is_ocb)
1601 qparam.aifs = 9;
1602 else
1603 qparam.aifs = 7;
1604 break;
1605 /* never happens but let's not leave undefined */
1606 default:
1607 case IEEE80211_AC_BE:
1608 qparam.cw_max = aCWmax;
1609 qparam.cw_min = aCWmin;
1610 qparam.txop = 0;
1611 if (is_ocb)
1612 qparam.aifs = 6;
1613 else
1614 qparam.aifs = 3;
1615 break;
1616 case IEEE80211_AC_VI:
1617 qparam.cw_max = aCWmin;
1618 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1619 if (is_ocb)
1620 qparam.txop = 0;
1621 else if (use_11b)
1622 qparam.txop = 6016/32;
1623 else
1624 qparam.txop = 3008/32;
1625
1626 if (is_ocb)
1627 qparam.aifs = 3;
1628 else
1629 qparam.aifs = 2;
1630 break;
1631 case IEEE80211_AC_VO:
1632 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1633 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1634 if (is_ocb)
1635 qparam.txop = 0;
1636 else if (use_11b)
1637 qparam.txop = 3264/32;
1638 else
1639 qparam.txop = 1504/32;
1640 qparam.aifs = 2;
1641 break;
1642 }
1643 }
1644 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1645
1646 qparam.uapsd = false;
1647
1648 sdata->tx_conf[ac] = qparam;
1649 drv_conf_tx(local, sdata, ac, &qparam);
1650 }
1651
1652 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1653 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1654 sdata->vif.type != NL80211_IFTYPE_NAN) {
1655 sdata->vif.bss_conf.qos = enable_qos;
1656 if (bss_notify)
1657 ieee80211_bss_info_change_notify(sdata,
1658 BSS_CHANGED_QOS);
1659 }
1660}
1661
1662void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1663 u16 transaction, u16 auth_alg, u16 status,
1664 const u8 *extra, size_t extra_len, const u8 *da,
1665 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1666 u32 tx_flags)
1667{
1668 struct ieee80211_local *local = sdata->local;
1669 struct sk_buff *skb;
1670 struct ieee80211_mgmt *mgmt;
1671 int err;
1672
1673 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1674 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1675 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1676 if (!skb)
1677 return;
1678
1679 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1680
1681 mgmt = skb_put_zero(skb, 24 + 6);
1682 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1683 IEEE80211_STYPE_AUTH);
1684 memcpy(mgmt->da, da, ETH_ALEN);
1685 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1686 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1687 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1688 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1689 mgmt->u.auth.status_code = cpu_to_le16(status);
1690 if (extra)
1691 skb_put_data(skb, extra, extra_len);
1692
1693 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1694 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1695 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1696 if (WARN_ON(err)) {
1697 kfree_skb(skb);
1698 return;
1699 }
1700 }
1701
1702 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1703 tx_flags;
1704 ieee80211_tx_skb(sdata, skb);
1705}
1706
1707void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1708 const u8 *da, const u8 *bssid,
1709 u16 stype, u16 reason,
1710 bool send_frame, u8 *frame_buf)
1711{
1712 struct ieee80211_local *local = sdata->local;
1713 struct sk_buff *skb;
1714 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1715
1716 /* build frame */
1717 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1718 mgmt->duration = 0; /* initialize only */
1719 mgmt->seq_ctrl = 0; /* initialize only */
1720 memcpy(mgmt->da, da, ETH_ALEN);
1721 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1722 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1723 /* u.deauth.reason_code == u.disassoc.reason_code */
1724 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1725
1726 if (send_frame) {
1727 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1728 IEEE80211_DEAUTH_FRAME_LEN);
1729 if (!skb)
1730 return;
1731
1732 skb_reserve(skb, local->hw.extra_tx_headroom);
1733
1734 /* copy in frame */
1735 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1736
1737 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1738 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1739 IEEE80211_SKB_CB(skb)->flags |=
1740 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1741
1742 ieee80211_tx_skb(sdata, skb);
1743 }
1744}
1745
1746static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1747{
1748 if ((end - pos) < 5)
1749 return pos;
1750
1751 *pos++ = WLAN_EID_EXTENSION;
1752 *pos++ = 1 + sizeof(cap);
1753 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1754 memcpy(pos, &cap, sizeof(cap));
1755
1756 return pos + 2;
1757}
1758
1759static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1760 u8 *buffer, size_t buffer_len,
1761 const u8 *ie, size_t ie_len,
1762 enum nl80211_band band,
1763 u32 rate_mask,
1764 struct cfg80211_chan_def *chandef,
1765 size_t *offset, u32 flags)
1766{
1767 struct ieee80211_local *local = sdata->local;
1768 struct ieee80211_supported_band *sband;
1769 const struct ieee80211_sta_he_cap *he_cap;
1770 u8 *pos = buffer, *end = buffer + buffer_len;
1771 size_t noffset;
1772 int supp_rates_len, i;
1773 u8 rates[32];
1774 int num_rates;
1775 int ext_rates_len;
1776 int shift;
1777 u32 rate_flags;
1778 bool have_80mhz = false;
1779
1780 *offset = 0;
1781
1782 sband = local->hw.wiphy->bands[band];
1783 if (WARN_ON_ONCE(!sband))
1784 return 0;
1785
1786 rate_flags = ieee80211_chandef_rate_flags(chandef);
1787 shift = ieee80211_chandef_get_shift(chandef);
1788
1789 num_rates = 0;
1790 for (i = 0; i < sband->n_bitrates; i++) {
1791 if ((BIT(i) & rate_mask) == 0)
1792 continue; /* skip rate */
1793 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1794 continue;
1795
1796 rates[num_rates++] =
1797 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1798 (1 << shift) * 5);
1799 }
1800
1801 supp_rates_len = min_t(int, num_rates, 8);
1802
1803 if (end - pos < 2 + supp_rates_len)
1804 goto out_err;
1805 *pos++ = WLAN_EID_SUPP_RATES;
1806 *pos++ = supp_rates_len;
1807 memcpy(pos, rates, supp_rates_len);
1808 pos += supp_rates_len;
1809
1810 /* insert "request information" if in custom IEs */
1811 if (ie && ie_len) {
1812 static const u8 before_extrates[] = {
1813 WLAN_EID_SSID,
1814 WLAN_EID_SUPP_RATES,
1815 WLAN_EID_REQUEST,
1816 };
1817 noffset = ieee80211_ie_split(ie, ie_len,
1818 before_extrates,
1819 ARRAY_SIZE(before_extrates),
1820 *offset);
1821 if (end - pos < noffset - *offset)
1822 goto out_err;
1823 memcpy(pos, ie + *offset, noffset - *offset);
1824 pos += noffset - *offset;
1825 *offset = noffset;
1826 }
1827
1828 ext_rates_len = num_rates - supp_rates_len;
1829 if (ext_rates_len > 0) {
1830 if (end - pos < 2 + ext_rates_len)
1831 goto out_err;
1832 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1833 *pos++ = ext_rates_len;
1834 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1835 pos += ext_rates_len;
1836 }
1837
1838 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1839 if (end - pos < 3)
1840 goto out_err;
1841 *pos++ = WLAN_EID_DS_PARAMS;
1842 *pos++ = 1;
1843 *pos++ = ieee80211_frequency_to_channel(
1844 chandef->chan->center_freq);
1845 }
1846
1847 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1848 goto done;
1849
1850 /* insert custom IEs that go before HT */
1851 if (ie && ie_len) {
1852 static const u8 before_ht[] = {
1853 /*
1854 * no need to list the ones split off already
1855 * (or generated here)
1856 */
1857 WLAN_EID_DS_PARAMS,
1858 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1859 };
1860 noffset = ieee80211_ie_split(ie, ie_len,
1861 before_ht, ARRAY_SIZE(before_ht),
1862 *offset);
1863 if (end - pos < noffset - *offset)
1864 goto out_err;
1865 memcpy(pos, ie + *offset, noffset - *offset);
1866 pos += noffset - *offset;
1867 *offset = noffset;
1868 }
1869
1870 if (sband->ht_cap.ht_supported) {
1871 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1872 goto out_err;
1873 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1874 sband->ht_cap.cap);
1875 }
1876
1877 /* insert custom IEs that go before VHT */
1878 if (ie && ie_len) {
1879 static const u8 before_vht[] = {
1880 /*
1881 * no need to list the ones split off already
1882 * (or generated here)
1883 */
1884 WLAN_EID_BSS_COEX_2040,
1885 WLAN_EID_EXT_CAPABILITY,
1886 WLAN_EID_SSID_LIST,
1887 WLAN_EID_CHANNEL_USAGE,
1888 WLAN_EID_INTERWORKING,
1889 WLAN_EID_MESH_ID,
1890 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1891 };
1892 noffset = ieee80211_ie_split(ie, ie_len,
1893 before_vht, ARRAY_SIZE(before_vht),
1894 *offset);
1895 if (end - pos < noffset - *offset)
1896 goto out_err;
1897 memcpy(pos, ie + *offset, noffset - *offset);
1898 pos += noffset - *offset;
1899 *offset = noffset;
1900 }
1901
1902 /* Check if any channel in this sband supports at least 80 MHz */
1903 for (i = 0; i < sband->n_channels; i++) {
1904 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1905 IEEE80211_CHAN_NO_80MHZ))
1906 continue;
1907
1908 have_80mhz = true;
1909 break;
1910 }
1911
1912 if (sband->vht_cap.vht_supported && have_80mhz) {
1913 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1914 goto out_err;
1915 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1916 sband->vht_cap.cap);
1917 }
1918
1919 /* insert custom IEs that go before HE */
1920 if (ie && ie_len) {
1921 static const u8 before_he[] = {
1922 /*
1923 * no need to list the ones split off before VHT
1924 * or generated here
1925 */
1926 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1927 WLAN_EID_AP_CSN,
1928 /* TODO: add 11ah/11aj/11ak elements */
1929 };
1930 noffset = ieee80211_ie_split(ie, ie_len,
1931 before_he, ARRAY_SIZE(before_he),
1932 *offset);
1933 if (end - pos < noffset - *offset)
1934 goto out_err;
1935 memcpy(pos, ie + *offset, noffset - *offset);
1936 pos += noffset - *offset;
1937 *offset = noffset;
1938 }
1939
1940 he_cap = ieee80211_get_he_iftype_cap(sband,
1941 ieee80211_vif_type_p2p(&sdata->vif));
1942 if (he_cap &&
1943 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
1944 IEEE80211_CHAN_NO_HE)) {
1945 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1946 if (!pos)
1947 goto out_err;
1948 }
1949
1950 if (cfg80211_any_usable_channels(local->hw.wiphy,
1951 BIT(NL80211_BAND_6GHZ),
1952 IEEE80211_CHAN_NO_HE)) {
1953 struct ieee80211_supported_band *sband6;
1954
1955 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
1956 he_cap = ieee80211_get_he_iftype_cap(sband6,
1957 ieee80211_vif_type_p2p(&sdata->vif));
1958
1959 if (he_cap) {
1960 enum nl80211_iftype iftype =
1961 ieee80211_vif_type_p2p(&sdata->vif);
1962 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
1963
1964 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
1965 }
1966 }
1967
1968 /*
1969 * If adding more here, adjust code in main.c
1970 * that calculates local->scan_ies_len.
1971 */
1972
1973 return pos - buffer;
1974 out_err:
1975 WARN_ONCE(1, "not enough space for preq IEs\n");
1976 done:
1977 return pos - buffer;
1978}
1979
1980int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
1981 size_t buffer_len,
1982 struct ieee80211_scan_ies *ie_desc,
1983 const u8 *ie, size_t ie_len,
1984 u8 bands_used, u32 *rate_masks,
1985 struct cfg80211_chan_def *chandef,
1986 u32 flags)
1987{
1988 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1989 int i;
1990
1991 memset(ie_desc, 0, sizeof(*ie_desc));
1992
1993 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1994 if (bands_used & BIT(i)) {
1995 pos += ieee80211_build_preq_ies_band(sdata,
1996 buffer + pos,
1997 buffer_len - pos,
1998 ie, ie_len, i,
1999 rate_masks[i],
2000 chandef,
2001 &custom_ie_offset,
2002 flags);
2003 ie_desc->ies[i] = buffer + old_pos;
2004 ie_desc->len[i] = pos - old_pos;
2005 old_pos = pos;
2006 }
2007 }
2008
2009 /* add any remaining custom IEs */
2010 if (ie && ie_len) {
2011 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2012 "not enough space for preq custom IEs\n"))
2013 return pos;
2014 memcpy(buffer + pos, ie + custom_ie_offset,
2015 ie_len - custom_ie_offset);
2016 ie_desc->common_ies = buffer + pos;
2017 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2018 pos += ie_len - custom_ie_offset;
2019 }
2020
2021 return pos;
2022};
2023
2024struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2025 const u8 *src, const u8 *dst,
2026 u32 ratemask,
2027 struct ieee80211_channel *chan,
2028 const u8 *ssid, size_t ssid_len,
2029 const u8 *ie, size_t ie_len,
2030 u32 flags)
2031{
2032 struct ieee80211_local *local = sdata->local;
2033 struct cfg80211_chan_def chandef;
2034 struct sk_buff *skb;
2035 struct ieee80211_mgmt *mgmt;
2036 int ies_len;
2037 u32 rate_masks[NUM_NL80211_BANDS] = {};
2038 struct ieee80211_scan_ies dummy_ie_desc;
2039
2040 /*
2041 * Do not send DS Channel parameter for directed probe requests
2042 * in order to maximize the chance that we get a response. Some
2043 * badly-behaved APs don't respond when this parameter is included.
2044 */
2045 chandef.width = sdata->vif.bss_conf.chandef.width;
2046 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2047 chandef.chan = NULL;
2048 else
2049 chandef.chan = chan;
2050
2051 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2052 100 + ie_len);
2053 if (!skb)
2054 return NULL;
2055
2056 rate_masks[chan->band] = ratemask;
2057 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2058 skb_tailroom(skb), &dummy_ie_desc,
2059 ie, ie_len, BIT(chan->band),
2060 rate_masks, &chandef, flags);
2061 skb_put(skb, ies_len);
2062
2063 if (dst) {
2064 mgmt = (struct ieee80211_mgmt *) skb->data;
2065 memcpy(mgmt->da, dst, ETH_ALEN);
2066 memcpy(mgmt->bssid, dst, ETH_ALEN);
2067 }
2068
2069 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2070
2071 return skb;
2072}
2073
2074u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2075 struct ieee802_11_elems *elems,
2076 enum nl80211_band band, u32 *basic_rates)
2077{
2078 struct ieee80211_supported_band *sband;
2079 size_t num_rates;
2080 u32 supp_rates, rate_flags;
2081 int i, j, shift;
2082
2083 sband = sdata->local->hw.wiphy->bands[band];
2084 if (WARN_ON(!sband))
2085 return 1;
2086
2087 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2088 shift = ieee80211_vif_get_shift(&sdata->vif);
2089
2090 num_rates = sband->n_bitrates;
2091 supp_rates = 0;
2092 for (i = 0; i < elems->supp_rates_len +
2093 elems->ext_supp_rates_len; i++) {
2094 u8 rate = 0;
2095 int own_rate;
2096 bool is_basic;
2097 if (i < elems->supp_rates_len)
2098 rate = elems->supp_rates[i];
2099 else if (elems->ext_supp_rates)
2100 rate = elems->ext_supp_rates
2101 [i - elems->supp_rates_len];
2102 own_rate = 5 * (rate & 0x7f);
2103 is_basic = !!(rate & 0x80);
2104
2105 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2106 continue;
2107
2108 for (j = 0; j < num_rates; j++) {
2109 int brate;
2110 if ((rate_flags & sband->bitrates[j].flags)
2111 != rate_flags)
2112 continue;
2113
2114 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2115 1 << shift);
2116
2117 if (brate == own_rate) {
2118 supp_rates |= BIT(j);
2119 if (basic_rates && is_basic)
2120 *basic_rates |= BIT(j);
2121 }
2122 }
2123 }
2124 return supp_rates;
2125}
2126
2127void ieee80211_stop_device(struct ieee80211_local *local)
2128{
2129 ieee80211_led_radio(local, false);
2130 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2131
2132 cancel_work_sync(&local->reconfig_filter);
2133
2134 flush_workqueue(local->workqueue);
2135 drv_stop(local);
2136}
2137
2138static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2139 bool aborted)
2140{
2141 /* It's possible that we don't handle the scan completion in
2142 * time during suspend, so if it's still marked as completed
2143 * here, queue the work and flush it to clean things up.
2144 * Instead of calling the worker function directly here, we
2145 * really queue it to avoid potential races with other flows
2146 * scheduling the same work.
2147 */
2148 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2149 /* If coming from reconfiguration failure, abort the scan so
2150 * we don't attempt to continue a partial HW scan - which is
2151 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2152 * completed scan, and a 5 GHz portion is still pending.
2153 */
2154 if (aborted)
2155 set_bit(SCAN_ABORTED, &local->scanning);
2156 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2157 flush_delayed_work(&local->scan_work);
2158 }
2159}
2160
2161static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2162{
2163 struct ieee80211_sub_if_data *sdata;
2164 struct ieee80211_chanctx *ctx;
2165
2166 /*
2167 * We get here if during resume the device can't be restarted properly.
2168 * We might also get here if this happens during HW reset, which is a
2169 * slightly different situation and we need to drop all connections in
2170 * the latter case.
2171 *
2172 * Ask cfg80211 to turn off all interfaces, this will result in more
2173 * warnings but at least we'll then get into a clean stopped state.
2174 */
2175
2176 local->resuming = false;
2177 local->suspended = false;
2178 local->in_reconfig = false;
2179
2180 ieee80211_flush_completed_scan(local, true);
2181
2182 /* scheduled scan clearly can't be running any more, but tell
2183 * cfg80211 and clear local state
2184 */
2185 ieee80211_sched_scan_end(local);
2186
2187 list_for_each_entry(sdata, &local->interfaces, list)
2188 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2189
2190 /* Mark channel contexts as not being in the driver any more to avoid
2191 * removing them from the driver during the shutdown process...
2192 */
2193 mutex_lock(&local->chanctx_mtx);
2194 list_for_each_entry(ctx, &local->chanctx_list, list)
2195 ctx->driver_present = false;
2196 mutex_unlock(&local->chanctx_mtx);
2197}
2198
2199static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2200 struct ieee80211_sub_if_data *sdata)
2201{
2202 struct ieee80211_chanctx_conf *conf;
2203 struct ieee80211_chanctx *ctx;
2204
2205 if (!local->use_chanctx)
2206 return;
2207
2208 mutex_lock(&local->chanctx_mtx);
2209 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2210 lockdep_is_held(&local->chanctx_mtx));
2211 if (conf) {
2212 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2213 drv_assign_vif_chanctx(local, sdata, ctx);
2214 }
2215 mutex_unlock(&local->chanctx_mtx);
2216}
2217
2218static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2219{
2220 struct ieee80211_local *local = sdata->local;
2221 struct sta_info *sta;
2222
2223 /* add STAs back */
2224 mutex_lock(&local->sta_mtx);
2225 list_for_each_entry(sta, &local->sta_list, list) {
2226 enum ieee80211_sta_state state;
2227
2228 if (!sta->uploaded || sta->sdata != sdata)
2229 continue;
2230
2231 for (state = IEEE80211_STA_NOTEXIST;
2232 state < sta->sta_state; state++)
2233 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2234 state + 1));
2235 }
2236 mutex_unlock(&local->sta_mtx);
2237}
2238
2239static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2240{
2241 struct cfg80211_nan_func *func, **funcs;
2242 int res, id, i = 0;
2243
2244 res = drv_start_nan(sdata->local, sdata,
2245 &sdata->u.nan.conf);
2246 if (WARN_ON(res))
2247 return res;
2248
2249 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2250 sizeof(*funcs),
2251 GFP_KERNEL);
2252 if (!funcs)
2253 return -ENOMEM;
2254
2255 /* Add all the functions:
2256 * This is a little bit ugly. We need to call a potentially sleeping
2257 * callback for each NAN function, so we can't hold the spinlock.
2258 */
2259 spin_lock_bh(&sdata->u.nan.func_lock);
2260
2261 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2262 funcs[i++] = func;
2263
2264 spin_unlock_bh(&sdata->u.nan.func_lock);
2265
2266 for (i = 0; funcs[i]; i++) {
2267 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2268 if (WARN_ON(res))
2269 ieee80211_nan_func_terminated(&sdata->vif,
2270 funcs[i]->instance_id,
2271 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2272 GFP_KERNEL);
2273 }
2274
2275 kfree(funcs);
2276
2277 return 0;
2278}
2279
2280int ieee80211_reconfig(struct ieee80211_local *local)
2281{
2282 struct ieee80211_hw *hw = &local->hw;
2283 struct ieee80211_sub_if_data *sdata;
2284 struct ieee80211_chanctx *ctx;
2285 struct sta_info *sta;
2286 int res, i;
2287 bool reconfig_due_to_wowlan = false;
2288 struct ieee80211_sub_if_data *sched_scan_sdata;
2289 struct cfg80211_sched_scan_request *sched_scan_req;
2290 bool sched_scan_stopped = false;
2291 bool suspended = local->suspended;
2292
2293 /* nothing to do if HW shouldn't run */
2294 if (!local->open_count)
2295 goto wake_up;
2296
2297#ifdef CONFIG_PM
2298 if (suspended)
2299 local->resuming = true;
2300
2301 if (local->wowlan) {
2302 /*
2303 * In the wowlan case, both mac80211 and the device
2304 * are functional when the resume op is called, so
2305 * clear local->suspended so the device could operate
2306 * normally (e.g. pass rx frames).
2307 */
2308 local->suspended = false;
2309 res = drv_resume(local);
2310 local->wowlan = false;
2311 if (res < 0) {
2312 local->resuming = false;
2313 return res;
2314 }
2315 if (res == 0)
2316 goto wake_up;
2317 WARN_ON(res > 1);
2318 /*
2319 * res is 1, which means the driver requested
2320 * to go through a regular reset on wakeup.
2321 * restore local->suspended in this case.
2322 */
2323 reconfig_due_to_wowlan = true;
2324 local->suspended = true;
2325 }
2326#endif
2327
2328 /*
2329 * In case of hw_restart during suspend (without wowlan),
2330 * cancel restart work, as we are reconfiguring the device
2331 * anyway.
2332 * Note that restart_work is scheduled on a frozen workqueue,
2333 * so we can't deadlock in this case.
2334 */
2335 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2336 cancel_work_sync(&local->restart_work);
2337
2338 local->started = false;
2339
2340 /*
2341 * Upon resume hardware can sometimes be goofy due to
2342 * various platform / driver / bus issues, so restarting
2343 * the device may at times not work immediately. Propagate
2344 * the error.
2345 */
2346 res = drv_start(local);
2347 if (res) {
2348 if (suspended)
2349 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2350 else
2351 WARN(1, "Hardware became unavailable during restart.\n");
2352 ieee80211_handle_reconfig_failure(local);
2353 return res;
2354 }
2355
2356 /* setup fragmentation threshold */
2357 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2358
2359 /* setup RTS threshold */
2360 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2361
2362 /* reset coverage class */
2363 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2364
2365 ieee80211_led_radio(local, true);
2366 ieee80211_mod_tpt_led_trig(local,
2367 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2368
2369 /* add interfaces */
2370 sdata = rtnl_dereference(local->monitor_sdata);
2371 if (sdata) {
2372 /* in HW restart it exists already */
2373 WARN_ON(local->resuming);
2374 res = drv_add_interface(local, sdata);
2375 if (WARN_ON(res)) {
2376 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2377 synchronize_net();
2378 kfree(sdata);
2379 }
2380 }
2381
2382 list_for_each_entry(sdata, &local->interfaces, list) {
2383 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2384 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2385 ieee80211_sdata_running(sdata)) {
2386 res = drv_add_interface(local, sdata);
2387 if (WARN_ON(res))
2388 break;
2389 }
2390 }
2391
2392 /* If adding any of the interfaces failed above, roll back and
2393 * report failure.
2394 */
2395 if (res) {
2396 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2397 list)
2398 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2399 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2400 ieee80211_sdata_running(sdata))
2401 drv_remove_interface(local, sdata);
2402 ieee80211_handle_reconfig_failure(local);
2403 return res;
2404 }
2405
2406 /* add channel contexts */
2407 if (local->use_chanctx) {
2408 mutex_lock(&local->chanctx_mtx);
2409 list_for_each_entry(ctx, &local->chanctx_list, list)
2410 if (ctx->replace_state !=
2411 IEEE80211_CHANCTX_REPLACES_OTHER)
2412 WARN_ON(drv_add_chanctx(local, ctx));
2413 mutex_unlock(&local->chanctx_mtx);
2414
2415 sdata = rtnl_dereference(local->monitor_sdata);
2416 if (sdata && ieee80211_sdata_running(sdata))
2417 ieee80211_assign_chanctx(local, sdata);
2418 }
2419
2420 /* reconfigure hardware */
2421 ieee80211_hw_config(local, ~0);
2422
2423 ieee80211_configure_filter(local);
2424
2425 /* Finally also reconfigure all the BSS information */
2426 list_for_each_entry(sdata, &local->interfaces, list) {
2427 u32 changed;
2428
2429 if (!ieee80211_sdata_running(sdata))
2430 continue;
2431
2432 ieee80211_assign_chanctx(local, sdata);
2433
2434 switch (sdata->vif.type) {
2435 case NL80211_IFTYPE_AP_VLAN:
2436 case NL80211_IFTYPE_MONITOR:
2437 break;
2438 case NL80211_IFTYPE_ADHOC:
2439 if (sdata->vif.bss_conf.ibss_joined)
2440 WARN_ON(drv_join_ibss(local, sdata));
2441 fallthrough;
2442 default:
2443 ieee80211_reconfig_stations(sdata);
2444 fallthrough;
2445 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2446 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2447 drv_conf_tx(local, sdata, i,
2448 &sdata->tx_conf[i]);
2449 break;
2450 }
2451
2452 /* common change flags for all interface types */
2453 changed = BSS_CHANGED_ERP_CTS_PROT |
2454 BSS_CHANGED_ERP_PREAMBLE |
2455 BSS_CHANGED_ERP_SLOT |
2456 BSS_CHANGED_HT |
2457 BSS_CHANGED_BASIC_RATES |
2458 BSS_CHANGED_BEACON_INT |
2459 BSS_CHANGED_BSSID |
2460 BSS_CHANGED_CQM |
2461 BSS_CHANGED_QOS |
2462 BSS_CHANGED_IDLE |
2463 BSS_CHANGED_TXPOWER |
2464 BSS_CHANGED_MCAST_RATE;
2465
2466 if (sdata->vif.mu_mimo_owner)
2467 changed |= BSS_CHANGED_MU_GROUPS;
2468
2469 switch (sdata->vif.type) {
2470 case NL80211_IFTYPE_STATION:
2471 changed |= BSS_CHANGED_ASSOC |
2472 BSS_CHANGED_ARP_FILTER |
2473 BSS_CHANGED_PS;
2474
2475 /* Re-send beacon info report to the driver */
2476 if (sdata->u.mgd.have_beacon)
2477 changed |= BSS_CHANGED_BEACON_INFO;
2478
2479 if (sdata->vif.bss_conf.max_idle_period ||
2480 sdata->vif.bss_conf.protected_keep_alive)
2481 changed |= BSS_CHANGED_KEEP_ALIVE;
2482
2483 sdata_lock(sdata);
2484 ieee80211_bss_info_change_notify(sdata, changed);
2485 sdata_unlock(sdata);
2486 break;
2487 case NL80211_IFTYPE_OCB:
2488 changed |= BSS_CHANGED_OCB;
2489 ieee80211_bss_info_change_notify(sdata, changed);
2490 break;
2491 case NL80211_IFTYPE_ADHOC:
2492 changed |= BSS_CHANGED_IBSS;
2493 fallthrough;
2494 case NL80211_IFTYPE_AP:
2495 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2496
2497 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2498 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2499 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2500 changed |= BSS_CHANGED_FTM_RESPONDER;
2501
2502 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2503 changed |= BSS_CHANGED_AP_PROBE_RESP;
2504
2505 if (rcu_access_pointer(sdata->u.ap.beacon))
2506 drv_start_ap(local, sdata);
2507 }
2508 fallthrough;
2509 case NL80211_IFTYPE_MESH_POINT:
2510 if (sdata->vif.bss_conf.enable_beacon) {
2511 changed |= BSS_CHANGED_BEACON |
2512 BSS_CHANGED_BEACON_ENABLED;
2513 ieee80211_bss_info_change_notify(sdata, changed);
2514 }
2515 break;
2516 case NL80211_IFTYPE_NAN:
2517 res = ieee80211_reconfig_nan(sdata);
2518 if (res < 0) {
2519 ieee80211_handle_reconfig_failure(local);
2520 return res;
2521 }
2522 break;
2523 case NL80211_IFTYPE_AP_VLAN:
2524 case NL80211_IFTYPE_MONITOR:
2525 case NL80211_IFTYPE_P2P_DEVICE:
2526 /* nothing to do */
2527 break;
2528 case NL80211_IFTYPE_UNSPECIFIED:
2529 case NUM_NL80211_IFTYPES:
2530 case NL80211_IFTYPE_P2P_CLIENT:
2531 case NL80211_IFTYPE_P2P_GO:
2532 case NL80211_IFTYPE_WDS:
2533 WARN_ON(1);
2534 break;
2535 }
2536 }
2537
2538 ieee80211_recalc_ps(local);
2539
2540 /*
2541 * The sta might be in psm against the ap (e.g. because
2542 * this was the state before a hw restart), so we
2543 * explicitly send a null packet in order to make sure
2544 * it'll sync against the ap (and get out of psm).
2545 */
2546 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2547 list_for_each_entry(sdata, &local->interfaces, list) {
2548 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2549 continue;
2550 if (!sdata->u.mgd.associated)
2551 continue;
2552
2553 ieee80211_send_nullfunc(local, sdata, false);
2554 }
2555 }
2556
2557 /* APs are now beaconing, add back stations */
2558 mutex_lock(&local->sta_mtx);
2559 list_for_each_entry(sta, &local->sta_list, list) {
2560 enum ieee80211_sta_state state;
2561
2562 if (!sta->uploaded)
2563 continue;
2564
2565 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2566 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2567 continue;
2568
2569 for (state = IEEE80211_STA_NOTEXIST;
2570 state < sta->sta_state; state++)
2571 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2572 state + 1));
2573 }
2574 mutex_unlock(&local->sta_mtx);
2575
2576 /* add back keys */
2577 list_for_each_entry(sdata, &local->interfaces, list)
2578 ieee80211_reenable_keys(sdata);
2579
2580 /* Reconfigure sched scan if it was interrupted by FW restart */
2581 mutex_lock(&local->mtx);
2582 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2583 lockdep_is_held(&local->mtx));
2584 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2585 lockdep_is_held(&local->mtx));
2586 if (sched_scan_sdata && sched_scan_req)
2587 /*
2588 * Sched scan stopped, but we don't want to report it. Instead,
2589 * we're trying to reschedule. However, if more than one scan
2590 * plan was set, we cannot reschedule since we don't know which
2591 * scan plan was currently running (and some scan plans may have
2592 * already finished).
2593 */
2594 if (sched_scan_req->n_scan_plans > 1 ||
2595 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2596 sched_scan_req)) {
2597 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2598 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2599 sched_scan_stopped = true;
2600 }
2601 mutex_unlock(&local->mtx);
2602
2603 if (sched_scan_stopped)
2604 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2605
2606 wake_up:
2607
2608 if (local->monitors == local->open_count && local->monitors > 0)
2609 ieee80211_add_virtual_monitor(local);
2610
2611 /*
2612 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2613 * sessions can be established after a resume.
2614 *
2615 * Also tear down aggregation sessions since reconfiguring
2616 * them in a hardware restart scenario is not easily done
2617 * right now, and the hardware will have lost information
2618 * about the sessions, but we and the AP still think they
2619 * are active. This is really a workaround though.
2620 */
2621 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2622 mutex_lock(&local->sta_mtx);
2623
2624 list_for_each_entry(sta, &local->sta_list, list) {
2625 if (!local->resuming)
2626 ieee80211_sta_tear_down_BA_sessions(
2627 sta, AGG_STOP_LOCAL_REQUEST);
2628 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2629 }
2630
2631 mutex_unlock(&local->sta_mtx);
2632 }
2633
2634 if (local->in_reconfig) {
2635 local->in_reconfig = false;
2636 barrier();
2637
2638 /* Restart deferred ROCs */
2639 mutex_lock(&local->mtx);
2640 ieee80211_start_next_roc(local);
2641 mutex_unlock(&local->mtx);
2642
2643 /* Requeue all works */
2644 list_for_each_entry(sdata, &local->interfaces, list)
2645 ieee80211_queue_work(&local->hw, &sdata->work);
2646 }
2647
2648 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2649 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2650 false);
2651
2652 /*
2653 * If this is for hw restart things are still running.
2654 * We may want to change that later, however.
2655 */
2656 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2657 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2658
2659 if (!suspended)
2660 return 0;
2661
2662#ifdef CONFIG_PM
2663 /* first set suspended false, then resuming */
2664 local->suspended = false;
2665 mb();
2666 local->resuming = false;
2667
2668 ieee80211_flush_completed_scan(local, false);
2669
2670 if (local->open_count && !reconfig_due_to_wowlan)
2671 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2672
2673 list_for_each_entry(sdata, &local->interfaces, list) {
2674 if (!ieee80211_sdata_running(sdata))
2675 continue;
2676 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2677 ieee80211_sta_restart(sdata);
2678 }
2679
2680 mod_timer(&local->sta_cleanup, jiffies + 1);
2681#else
2682 WARN_ON(1);
2683#endif
2684
2685 return 0;
2686}
2687
2688void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2689{
2690 struct ieee80211_sub_if_data *sdata;
2691 struct ieee80211_local *local;
2692 struct ieee80211_key *key;
2693
2694 if (WARN_ON(!vif))
2695 return;
2696
2697 sdata = vif_to_sdata(vif);
2698 local = sdata->local;
2699
2700 if (WARN_ON(!local->resuming))
2701 return;
2702
2703 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2704 return;
2705
2706 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2707
2708 mutex_lock(&local->key_mtx);
2709 list_for_each_entry(key, &sdata->key_list, list)
2710 key->flags |= KEY_FLAG_TAINTED;
2711 mutex_unlock(&local->key_mtx);
2712}
2713EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2714
2715void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2716{
2717 struct ieee80211_local *local = sdata->local;
2718 struct ieee80211_chanctx_conf *chanctx_conf;
2719 struct ieee80211_chanctx *chanctx;
2720
2721 mutex_lock(&local->chanctx_mtx);
2722
2723 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2724 lockdep_is_held(&local->chanctx_mtx));
2725
2726 /*
2727 * This function can be called from a work, thus it may be possible
2728 * that the chanctx_conf is removed (due to a disconnection, for
2729 * example).
2730 * So nothing should be done in such case.
2731 */
2732 if (!chanctx_conf)
2733 goto unlock;
2734
2735 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2736 ieee80211_recalc_smps_chanctx(local, chanctx);
2737 unlock:
2738 mutex_unlock(&local->chanctx_mtx);
2739}
2740
2741void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2742{
2743 struct ieee80211_local *local = sdata->local;
2744 struct ieee80211_chanctx_conf *chanctx_conf;
2745 struct ieee80211_chanctx *chanctx;
2746
2747 mutex_lock(&local->chanctx_mtx);
2748
2749 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2750 lockdep_is_held(&local->chanctx_mtx));
2751
2752 if (WARN_ON_ONCE(!chanctx_conf))
2753 goto unlock;
2754
2755 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2756 ieee80211_recalc_chanctx_min_def(local, chanctx);
2757 unlock:
2758 mutex_unlock(&local->chanctx_mtx);
2759}
2760
2761size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2762{
2763 size_t pos = offset;
2764
2765 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2766 pos += 2 + ies[pos + 1];
2767
2768 return pos;
2769}
2770
2771static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2772 int rssi_min_thold,
2773 int rssi_max_thold)
2774{
2775 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2776
2777 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2778 return;
2779
2780 /*
2781 * Scale up threshold values before storing it, as the RSSI averaging
2782 * algorithm uses a scaled up value as well. Change this scaling
2783 * factor if the RSSI averaging algorithm changes.
2784 */
2785 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2786 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2787}
2788
2789void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2790 int rssi_min_thold,
2791 int rssi_max_thold)
2792{
2793 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2794
2795 WARN_ON(rssi_min_thold == rssi_max_thold ||
2796 rssi_min_thold > rssi_max_thold);
2797
2798 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2799 rssi_max_thold);
2800}
2801EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2802
2803void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2804{
2805 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2806
2807 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2808}
2809EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
2810
2811u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2812 u16 cap)
2813{
2814 __le16 tmp;
2815
2816 *pos++ = WLAN_EID_HT_CAPABILITY;
2817 *pos++ = sizeof(struct ieee80211_ht_cap);
2818 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2819
2820 /* capability flags */
2821 tmp = cpu_to_le16(cap);
2822 memcpy(pos, &tmp, sizeof(u16));
2823 pos += sizeof(u16);
2824
2825 /* AMPDU parameters */
2826 *pos++ = ht_cap->ampdu_factor |
2827 (ht_cap->ampdu_density <<
2828 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2829
2830 /* MCS set */
2831 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2832 pos += sizeof(ht_cap->mcs);
2833
2834 /* extended capabilities */
2835 pos += sizeof(__le16);
2836
2837 /* BF capabilities */
2838 pos += sizeof(__le32);
2839
2840 /* antenna selection */
2841 pos += sizeof(u8);
2842
2843 return pos;
2844}
2845
2846u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2847 u32 cap)
2848{
2849 __le32 tmp;
2850
2851 *pos++ = WLAN_EID_VHT_CAPABILITY;
2852 *pos++ = sizeof(struct ieee80211_vht_cap);
2853 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2854
2855 /* capability flags */
2856 tmp = cpu_to_le32(cap);
2857 memcpy(pos, &tmp, sizeof(u32));
2858 pos += sizeof(u32);
2859
2860 /* VHT MCS set */
2861 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2862 pos += sizeof(vht_cap->vht_mcs);
2863
2864 return pos;
2865}
2866
2867u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2868{
2869 const struct ieee80211_sta_he_cap *he_cap;
2870 struct ieee80211_supported_band *sband;
2871 u8 n;
2872
2873 sband = ieee80211_get_sband(sdata);
2874 if (!sband)
2875 return 0;
2876
2877 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2878 if (!he_cap)
2879 return 0;
2880
2881 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2882 return 2 + 1 +
2883 sizeof(he_cap->he_cap_elem) + n +
2884 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2885 he_cap->he_cap_elem.phy_cap_info);
2886}
2887
2888u8 *ieee80211_ie_build_he_cap(u8 *pos,
2889 const struct ieee80211_sta_he_cap *he_cap,
2890 u8 *end)
2891{
2892 u8 n;
2893 u8 ie_len;
2894 u8 *orig_pos = pos;
2895
2896 /* Make sure we have place for the IE */
2897 /*
2898 * TODO: the 1 added is because this temporarily is under the EXTENSION
2899 * IE. Get rid of it when it moves.
2900 */
2901 if (!he_cap)
2902 return orig_pos;
2903
2904 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2905 ie_len = 2 + 1 +
2906 sizeof(he_cap->he_cap_elem) + n +
2907 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2908 he_cap->he_cap_elem.phy_cap_info);
2909
2910 if ((end - pos) < ie_len)
2911 return orig_pos;
2912
2913 *pos++ = WLAN_EID_EXTENSION;
2914 pos++; /* We'll set the size later below */
2915 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2916
2917 /* Fixed data */
2918 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2919 pos += sizeof(he_cap->he_cap_elem);
2920
2921 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2922 pos += n;
2923
2924 /* Check if PPE Threshold should be present */
2925 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2926 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2927 goto end;
2928
2929 /*
2930 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2931 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2932 */
2933 n = hweight8(he_cap->ppe_thres[0] &
2934 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2935 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2936 IEEE80211_PPE_THRES_NSS_POS));
2937
2938 /*
2939 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2940 * total size.
2941 */
2942 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2943 n = DIV_ROUND_UP(n, 8);
2944
2945 /* Copy PPE Thresholds */
2946 memcpy(pos, &he_cap->ppe_thres, n);
2947 pos += n;
2948
2949end:
2950 orig_pos[1] = (pos - orig_pos) - 2;
2951 return pos;
2952}
2953
2954void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2955 struct sk_buff *skb)
2956{
2957 struct ieee80211_supported_band *sband;
2958 const struct ieee80211_sband_iftype_data *iftd;
2959 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
2960 u8 *pos;
2961 u16 cap;
2962
2963 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
2964 BIT(NL80211_BAND_6GHZ),
2965 IEEE80211_CHAN_NO_HE))
2966 return;
2967
2968 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2969
2970 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
2971 if (!iftd)
2972 return;
2973
2974 /* Check for device HE 6 GHz capability before adding element */
2975 if (!iftd->he_6ghz_capa.capa)
2976 return;
2977
2978 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
2979 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
2980
2981 switch (sdata->smps_mode) {
2982 case IEEE80211_SMPS_AUTOMATIC:
2983 case IEEE80211_SMPS_NUM_MODES:
2984 WARN_ON(1);
2985 fallthrough;
2986 case IEEE80211_SMPS_OFF:
2987 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
2988 IEEE80211_HE_6GHZ_CAP_SM_PS);
2989 break;
2990 case IEEE80211_SMPS_STATIC:
2991 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
2992 IEEE80211_HE_6GHZ_CAP_SM_PS);
2993 break;
2994 case IEEE80211_SMPS_DYNAMIC:
2995 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
2996 IEEE80211_HE_6GHZ_CAP_SM_PS);
2997 break;
2998 }
2999
3000 pos = skb_put(skb, 2 + 1 + sizeof(cap));
3001 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3002 pos + 2 + 1 + sizeof(cap));
3003}
3004
3005u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3006 const struct cfg80211_chan_def *chandef,
3007 u16 prot_mode, bool rifs_mode)
3008{
3009 struct ieee80211_ht_operation *ht_oper;
3010 /* Build HT Information */
3011 *pos++ = WLAN_EID_HT_OPERATION;
3012 *pos++ = sizeof(struct ieee80211_ht_operation);
3013 ht_oper = (struct ieee80211_ht_operation *)pos;
3014 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3015 chandef->chan->center_freq);
3016 switch (chandef->width) {
3017 case NL80211_CHAN_WIDTH_160:
3018 case NL80211_CHAN_WIDTH_80P80:
3019 case NL80211_CHAN_WIDTH_80:
3020 case NL80211_CHAN_WIDTH_40:
3021 if (chandef->center_freq1 > chandef->chan->center_freq)
3022 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3023 else
3024 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3025 break;
3026 default:
3027 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3028 break;
3029 }
3030 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3031 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3032 chandef->width != NL80211_CHAN_WIDTH_20)
3033 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3034
3035 if (rifs_mode)
3036 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3037
3038 ht_oper->operation_mode = cpu_to_le16(prot_mode);
3039 ht_oper->stbc_param = 0x0000;
3040
3041 /* It seems that Basic MCS set and Supported MCS set
3042 are identical for the first 10 bytes */
3043 memset(&ht_oper->basic_set, 0, 16);
3044 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3045
3046 return pos + sizeof(struct ieee80211_ht_operation);
3047}
3048
3049void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3050 const struct cfg80211_chan_def *chandef)
3051{
3052 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3053 *pos++ = 3; /* IE length */
3054 /* New channel width */
3055 switch (chandef->width) {
3056 case NL80211_CHAN_WIDTH_80:
3057 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3058 break;
3059 case NL80211_CHAN_WIDTH_160:
3060 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3061 break;
3062 case NL80211_CHAN_WIDTH_80P80:
3063 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3064 break;
3065 default:
3066 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3067 }
3068
3069 /* new center frequency segment 0 */
3070 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3071 /* new center frequency segment 1 */
3072 if (chandef->center_freq2)
3073 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3074 else
3075 *pos++ = 0;
3076}
3077
3078u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3079 const struct cfg80211_chan_def *chandef)
3080{
3081 struct ieee80211_vht_operation *vht_oper;
3082
3083 *pos++ = WLAN_EID_VHT_OPERATION;
3084 *pos++ = sizeof(struct ieee80211_vht_operation);
3085 vht_oper = (struct ieee80211_vht_operation *)pos;
3086 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3087 chandef->center_freq1);
3088 if (chandef->center_freq2)
3089 vht_oper->center_freq_seg1_idx =
3090 ieee80211_frequency_to_channel(chandef->center_freq2);
3091 else
3092 vht_oper->center_freq_seg1_idx = 0x00;
3093
3094 switch (chandef->width) {
3095 case NL80211_CHAN_WIDTH_160:
3096 /*
3097 * Convert 160 MHz channel width to new style as interop
3098 * workaround.
3099 */
3100 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3101 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3102 if (chandef->chan->center_freq < chandef->center_freq1)
3103 vht_oper->center_freq_seg0_idx -= 8;
3104 else
3105 vht_oper->center_freq_seg0_idx += 8;
3106 break;
3107 case NL80211_CHAN_WIDTH_80P80:
3108 /*
3109 * Convert 80+80 MHz channel width to new style as interop
3110 * workaround.
3111 */
3112 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3113 break;
3114 case NL80211_CHAN_WIDTH_80:
3115 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3116 break;
3117 default:
3118 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3119 break;
3120 }
3121
3122 /* don't require special VHT peer rates */
3123 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3124
3125 return pos + sizeof(struct ieee80211_vht_operation);
3126}
3127
3128u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3129{
3130 struct ieee80211_he_operation *he_oper;
3131 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3132 u32 he_oper_params;
3133 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3134
3135 if (chandef->chan->band == NL80211_BAND_6GHZ)
3136 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3137
3138 *pos++ = WLAN_EID_EXTENSION;
3139 *pos++ = ie_len;
3140 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3141
3142 he_oper_params = 0;
3143 he_oper_params |= u32_encode_bits(1023, /* disabled */
3144 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3145 he_oper_params |= u32_encode_bits(1,
3146 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3147 he_oper_params |= u32_encode_bits(1,
3148 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3149 if (chandef->chan->band == NL80211_BAND_6GHZ)
3150 he_oper_params |= u32_encode_bits(1,
3151 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3152
3153 he_oper = (struct ieee80211_he_operation *)pos;
3154 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3155
3156 /* don't require special HE peer rates */
3157 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3158 pos += sizeof(struct ieee80211_he_operation);
3159
3160 if (chandef->chan->band != NL80211_BAND_6GHZ)
3161 goto out;
3162
3163 /* TODO add VHT operational */
3164 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3165 he_6ghz_op->minrate = 6; /* 6 Mbps */
3166 he_6ghz_op->primary =
3167 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3168 he_6ghz_op->ccfs0 =
3169 ieee80211_frequency_to_channel(chandef->center_freq1);
3170 if (chandef->center_freq2)
3171 he_6ghz_op->ccfs1 =
3172 ieee80211_frequency_to_channel(chandef->center_freq2);
3173 else
3174 he_6ghz_op->ccfs1 = 0;
3175
3176 switch (chandef->width) {
3177 case NL80211_CHAN_WIDTH_160:
3178 /* Convert 160 MHz channel width to new style as interop
3179 * workaround.
3180 */
3181 he_6ghz_op->control =
3182 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3183 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3184 if (chandef->chan->center_freq < chandef->center_freq1)
3185 he_6ghz_op->ccfs0 -= 8;
3186 else
3187 he_6ghz_op->ccfs0 += 8;
3188 fallthrough;
3189 case NL80211_CHAN_WIDTH_80P80:
3190 he_6ghz_op->control =
3191 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3192 break;
3193 case NL80211_CHAN_WIDTH_80:
3194 he_6ghz_op->control =
3195 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3196 break;
3197 case NL80211_CHAN_WIDTH_40:
3198 he_6ghz_op->control =
3199 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3200 break;
3201 default:
3202 he_6ghz_op->control =
3203 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3204 break;
3205 }
3206
3207 pos += sizeof(struct ieee80211_he_6ghz_oper);
3208
3209out:
3210 return pos;
3211}
3212
3213bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3214 struct cfg80211_chan_def *chandef)
3215{
3216 enum nl80211_channel_type channel_type;
3217
3218 if (!ht_oper)
3219 return false;
3220
3221 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3222 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3223 channel_type = NL80211_CHAN_HT20;
3224 break;
3225 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3226 channel_type = NL80211_CHAN_HT40PLUS;
3227 break;
3228 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3229 channel_type = NL80211_CHAN_HT40MINUS;
3230 break;
3231 default:
3232 channel_type = NL80211_CHAN_NO_HT;
3233 return false;
3234 }
3235
3236 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3237 return true;
3238}
3239
3240bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3241 const struct ieee80211_vht_operation *oper,
3242 const struct ieee80211_ht_operation *htop,
3243 struct cfg80211_chan_def *chandef)
3244{
3245 struct cfg80211_chan_def new = *chandef;
3246 int cf0, cf1;
3247 int ccfs0, ccfs1, ccfs2;
3248 int ccf0, ccf1;
3249 u32 vht_cap;
3250 bool support_80_80 = false;
3251 bool support_160 = false;
3252 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3253 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3254 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3255 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3256
3257 if (!oper || !htop)
3258 return false;
3259
3260 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3261 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3262 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3263 support_80_80 = ((vht_cap &
3264 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3265 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3266 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3267 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3268 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3269 ccfs0 = oper->center_freq_seg0_idx;
3270 ccfs1 = oper->center_freq_seg1_idx;
3271 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3272 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3273 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3274
3275 ccf0 = ccfs0;
3276
3277 /* if not supported, parse as though we didn't understand it */
3278 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3279 ext_nss_bw_supp = 0;
3280
3281 /*
3282 * Cf. IEEE 802.11 Table 9-250
3283 *
3284 * We really just consider that because it's inefficient to connect
3285 * at a higher bandwidth than we'll actually be able to use.
3286 */
3287 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3288 default:
3289 case 0x00:
3290 ccf1 = 0;
3291 support_160 = false;
3292 support_80_80 = false;
3293 break;
3294 case 0x01:
3295 support_80_80 = false;
3296 fallthrough;
3297 case 0x02:
3298 case 0x03:
3299 ccf1 = ccfs2;
3300 break;
3301 case 0x10:
3302 ccf1 = ccfs1;
3303 break;
3304 case 0x11:
3305 case 0x12:
3306 if (!ccfs1)
3307 ccf1 = ccfs2;
3308 else
3309 ccf1 = ccfs1;
3310 break;
3311 case 0x13:
3312 case 0x20:
3313 case 0x23:
3314 ccf1 = ccfs1;
3315 break;
3316 }
3317
3318 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3319 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3320
3321 switch (oper->chan_width) {
3322 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3323 /* just use HT information directly */
3324 break;
3325 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3326 new.width = NL80211_CHAN_WIDTH_80;
3327 new.center_freq1 = cf0;
3328 /* If needed, adjust based on the newer interop workaround. */
3329 if (ccf1) {
3330 unsigned int diff;
3331
3332 diff = abs(ccf1 - ccf0);
3333 if ((diff == 8) && support_160) {
3334 new.width = NL80211_CHAN_WIDTH_160;
3335 new.center_freq1 = cf1;
3336 } else if ((diff > 8) && support_80_80) {
3337 new.width = NL80211_CHAN_WIDTH_80P80;
3338 new.center_freq2 = cf1;
3339 }
3340 }
3341 break;
3342 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3343 /* deprecated encoding */
3344 new.width = NL80211_CHAN_WIDTH_160;
3345 new.center_freq1 = cf0;
3346 break;
3347 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3348 /* deprecated encoding */
3349 new.width = NL80211_CHAN_WIDTH_80P80;
3350 new.center_freq1 = cf0;
3351 new.center_freq2 = cf1;
3352 break;
3353 default:
3354 return false;
3355 }
3356
3357 if (!cfg80211_chandef_valid(&new))
3358 return false;
3359
3360 *chandef = new;
3361 return true;
3362}
3363
3364bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3365 const struct ieee80211_he_operation *he_oper,
3366 struct cfg80211_chan_def *chandef)
3367{
3368 struct ieee80211_local *local = sdata->local;
3369 struct ieee80211_supported_band *sband;
3370 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3371 const struct ieee80211_sta_he_cap *he_cap;
3372 struct cfg80211_chan_def he_chandef = *chandef;
3373 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3374 bool support_80_80, support_160;
3375 u8 he_phy_cap;
3376 u32 freq;
3377
3378 if (chandef->chan->band != NL80211_BAND_6GHZ)
3379 return true;
3380
3381 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3382
3383 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3384 if (!he_cap) {
3385 sdata_info(sdata, "Missing iftype sband data/HE cap");
3386 return false;
3387 }
3388
3389 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3390 support_160 =
3391 he_phy_cap &
3392 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3393 support_80_80 =
3394 he_phy_cap &
3395 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3396
3397 if (!he_oper) {
3398 sdata_info(sdata,
3399 "HE is not advertised on (on %d MHz), expect issues\n",
3400 chandef->chan->center_freq);
3401 return false;
3402 }
3403
3404 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3405
3406 if (!he_6ghz_oper) {
3407 sdata_info(sdata,
3408 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3409 chandef->chan->center_freq);
3410 return false;
3411 }
3412
3413 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3414 NL80211_BAND_6GHZ);
3415 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3416
3417 switch (u8_get_bits(he_6ghz_oper->control,
3418 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3419 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3420 he_chandef.width = NL80211_CHAN_WIDTH_20;
3421 break;
3422 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3423 he_chandef.width = NL80211_CHAN_WIDTH_40;
3424 break;
3425 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3426 he_chandef.width = NL80211_CHAN_WIDTH_80;
3427 break;
3428 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3429 he_chandef.width = NL80211_CHAN_WIDTH_80;
3430 if (!he_6ghz_oper->ccfs1)
3431 break;
3432 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3433 if (support_160)
3434 he_chandef.width = NL80211_CHAN_WIDTH_160;
3435 } else {
3436 if (support_80_80)
3437 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3438 }
3439 break;
3440 }
3441
3442 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3443 he_chandef.center_freq1 =
3444 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3445 NL80211_BAND_6GHZ);
3446 } else {
3447 he_chandef.center_freq1 =
3448 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3449 NL80211_BAND_6GHZ);
3450 if (support_80_80 || support_160)
3451 he_chandef.center_freq2 =
3452 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3453 NL80211_BAND_6GHZ);
3454 }
3455
3456 if (!cfg80211_chandef_valid(&he_chandef)) {
3457 sdata_info(sdata,
3458 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3459 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3460 he_chandef.width,
3461 he_chandef.center_freq1,
3462 he_chandef.center_freq2);
3463 return false;
3464 }
3465
3466 *chandef = he_chandef;
3467
3468 return true;
3469}
3470
3471bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3472 struct cfg80211_chan_def *chandef)
3473{
3474 u32 oper_freq;
3475
3476 if (!oper)
3477 return false;
3478
3479 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3480 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3481 chandef->width = NL80211_CHAN_WIDTH_1;
3482 break;
3483 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3484 chandef->width = NL80211_CHAN_WIDTH_2;
3485 break;
3486 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3487 chandef->width = NL80211_CHAN_WIDTH_4;
3488 break;
3489 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3490 chandef->width = NL80211_CHAN_WIDTH_8;
3491 break;
3492 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3493 chandef->width = NL80211_CHAN_WIDTH_16;
3494 break;
3495 default:
3496 return false;
3497 }
3498
3499 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3500 NL80211_BAND_S1GHZ);
3501 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3502 chandef->freq1_offset = oper_freq % 1000;
3503
3504 return true;
3505}
3506
3507int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3508 const struct ieee80211_supported_band *sband,
3509 const u8 *srates, int srates_len, u32 *rates)
3510{
3511 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3512 int shift = ieee80211_chandef_get_shift(chandef);
3513 struct ieee80211_rate *br;
3514 int brate, rate, i, j, count = 0;
3515
3516 *rates = 0;
3517
3518 for (i = 0; i < srates_len; i++) {
3519 rate = srates[i] & 0x7f;
3520
3521 for (j = 0; j < sband->n_bitrates; j++) {
3522 br = &sband->bitrates[j];
3523 if ((rate_flags & br->flags) != rate_flags)
3524 continue;
3525
3526 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3527 if (brate == rate) {
3528 *rates |= BIT(j);
3529 count++;
3530 break;
3531 }
3532 }
3533 }
3534 return count;
3535}
3536
3537int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3538 struct sk_buff *skb, bool need_basic,
3539 enum nl80211_band band)
3540{
3541 struct ieee80211_local *local = sdata->local;
3542 struct ieee80211_supported_band *sband;
3543 int rate, shift;
3544 u8 i, rates, *pos;
3545 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3546 u32 rate_flags;
3547
3548 shift = ieee80211_vif_get_shift(&sdata->vif);
3549 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3550 sband = local->hw.wiphy->bands[band];
3551 rates = 0;
3552 for (i = 0; i < sband->n_bitrates; i++) {
3553 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3554 continue;
3555 rates++;
3556 }
3557 if (rates > 8)
3558 rates = 8;
3559
3560 if (skb_tailroom(skb) < rates + 2)
3561 return -ENOMEM;
3562
3563 pos = skb_put(skb, rates + 2);
3564 *pos++ = WLAN_EID_SUPP_RATES;
3565 *pos++ = rates;
3566 for (i = 0; i < rates; i++) {
3567 u8 basic = 0;
3568 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3569 continue;
3570
3571 if (need_basic && basic_rates & BIT(i))
3572 basic = 0x80;
3573 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3574 5 * (1 << shift));
3575 *pos++ = basic | (u8) rate;
3576 }
3577
3578 return 0;
3579}
3580
3581int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3582 struct sk_buff *skb, bool need_basic,
3583 enum nl80211_band band)
3584{
3585 struct ieee80211_local *local = sdata->local;
3586 struct ieee80211_supported_band *sband;
3587 int rate, shift;
3588 u8 i, exrates, *pos;
3589 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3590 u32 rate_flags;
3591
3592 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3593 shift = ieee80211_vif_get_shift(&sdata->vif);
3594
3595 sband = local->hw.wiphy->bands[band];
3596 exrates = 0;
3597 for (i = 0; i < sband->n_bitrates; i++) {
3598 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3599 continue;
3600 exrates++;
3601 }
3602
3603 if (exrates > 8)
3604 exrates -= 8;
3605 else
3606 exrates = 0;
3607
3608 if (skb_tailroom(skb) < exrates + 2)
3609 return -ENOMEM;
3610
3611 if (exrates) {
3612 pos = skb_put(skb, exrates + 2);
3613 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3614 *pos++ = exrates;
3615 for (i = 8; i < sband->n_bitrates; i++) {
3616 u8 basic = 0;
3617 if ((rate_flags & sband->bitrates[i].flags)
3618 != rate_flags)
3619 continue;
3620 if (need_basic && basic_rates & BIT(i))
3621 basic = 0x80;
3622 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3623 5 * (1 << shift));
3624 *pos++ = basic | (u8) rate;
3625 }
3626 }
3627 return 0;
3628}
3629
3630int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3631{
3632 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3633 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3634
3635 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3636 /* non-managed type inferfaces */
3637 return 0;
3638 }
3639 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3640}
3641EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3642
3643u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3644{
3645 if (!mcs)
3646 return 1;
3647
3648 /* TODO: consider rx_highest */
3649
3650 if (mcs->rx_mask[3])
3651 return 4;
3652 if (mcs->rx_mask[2])
3653 return 3;
3654 if (mcs->rx_mask[1])
3655 return 2;
3656 return 1;
3657}
3658
3659/**
3660 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3661 * @local: mac80211 hw info struct
3662 * @status: RX status
3663 * @mpdu_len: total MPDU length (including FCS)
3664 * @mpdu_offset: offset into MPDU to calculate timestamp at
3665 *
3666 * This function calculates the RX timestamp at the given MPDU offset, taking
3667 * into account what the RX timestamp was. An offset of 0 will just normalize
3668 * the timestamp to TSF at beginning of MPDU reception.
3669 */
3670u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3671 struct ieee80211_rx_status *status,
3672 unsigned int mpdu_len,
3673 unsigned int mpdu_offset)
3674{
3675 u64 ts = status->mactime;
3676 struct rate_info ri;
3677 u16 rate;
3678 u8 n_ltf;
3679
3680 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3681 return 0;
3682
3683 memset(&ri, 0, sizeof(ri));
3684
3685 ri.bw = status->bw;
3686
3687 /* Fill cfg80211 rate info */
3688 switch (status->encoding) {
3689 case RX_ENC_HE:
3690 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3691 ri.mcs = status->rate_idx;
3692 ri.nss = status->nss;
3693 ri.he_ru_alloc = status->he_ru;
3694 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3695 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3696
3697 /*
3698 * See P802.11ax_D6.0, section 27.3.4 for
3699 * VHT PPDU format.
3700 */
3701 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3702 mpdu_offset += 2;
3703 ts += 36;
3704
3705 /*
3706 * TODO:
3707 * For HE MU PPDU, add the HE-SIG-B.
3708 * For HE ER PPDU, add 8us for the HE-SIG-A.
3709 * For HE TB PPDU, add 4us for the HE-STF.
3710 * Add the HE-LTF durations - variable.
3711 */
3712 }
3713
3714 break;
3715 case RX_ENC_HT:
3716 ri.mcs = status->rate_idx;
3717 ri.flags |= RATE_INFO_FLAGS_MCS;
3718 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3719 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3720
3721 /*
3722 * See P802.11REVmd_D3.0, section 19.3.2 for
3723 * HT PPDU format.
3724 */
3725 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3726 mpdu_offset += 2;
3727 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3728 ts += 24;
3729 else
3730 ts += 32;
3731
3732 /*
3733 * Add Data HT-LTFs per streams
3734 * TODO: add Extension HT-LTFs, 4us per LTF
3735 */
3736 n_ltf = ((ri.mcs >> 3) & 3) + 1;
3737 n_ltf = n_ltf == 3 ? 4 : n_ltf;
3738 ts += n_ltf * 4;
3739 }
3740
3741 break;
3742 case RX_ENC_VHT:
3743 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3744 ri.mcs = status->rate_idx;
3745 ri.nss = status->nss;
3746 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3747 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3748
3749 /*
3750 * See P802.11REVmd_D3.0, section 21.3.2 for
3751 * VHT PPDU format.
3752 */
3753 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3754 mpdu_offset += 2;
3755 ts += 36;
3756
3757 /*
3758 * Add VHT-LTFs per streams
3759 */
3760 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3761 ri.nss + 1 : ri.nss;
3762 ts += 4 * n_ltf;
3763 }
3764
3765 break;
3766 default:
3767 WARN_ON(1);
3768 fallthrough;
3769 case RX_ENC_LEGACY: {
3770 struct ieee80211_supported_band *sband;
3771 int shift = 0;
3772 int bitrate;
3773
3774 switch (status->bw) {
3775 case RATE_INFO_BW_10:
3776 shift = 1;
3777 break;
3778 case RATE_INFO_BW_5:
3779 shift = 2;
3780 break;
3781 }
3782
3783 sband = local->hw.wiphy->bands[status->band];
3784 bitrate = sband->bitrates[status->rate_idx].bitrate;
3785 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3786
3787 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3788 if (status->band == NL80211_BAND_5GHZ) {
3789 ts += 20 << shift;
3790 mpdu_offset += 2;
3791 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3792 ts += 96;
3793 } else {
3794 ts += 192;
3795 }
3796 }
3797 break;
3798 }
3799 }
3800
3801 rate = cfg80211_calculate_bitrate(&ri);
3802 if (WARN_ONCE(!rate,
3803 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3804 (unsigned long long)status->flag, status->rate_idx,
3805 status->nss))
3806 return 0;
3807
3808 /* rewind from end of MPDU */
3809 if (status->flag & RX_FLAG_MACTIME_END)
3810 ts -= mpdu_len * 8 * 10 / rate;
3811
3812 ts += mpdu_offset * 8 * 10 / rate;
3813
3814 return ts;
3815}
3816
3817void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3818{
3819 struct ieee80211_sub_if_data *sdata;
3820 struct cfg80211_chan_def chandef;
3821
3822 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3823 lockdep_assert_wiphy(local->hw.wiphy);
3824
3825 mutex_lock(&local->mtx);
3826 list_for_each_entry(sdata, &local->interfaces, list) {
3827 /* it might be waiting for the local->mtx, but then
3828 * by the time it gets it, sdata->wdev.cac_started
3829 * will no longer be true
3830 */
3831 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3832
3833 if (sdata->wdev.cac_started) {
3834 chandef = sdata->vif.bss_conf.chandef;
3835 ieee80211_vif_release_channel(sdata);
3836 cfg80211_cac_event(sdata->dev,
3837 &chandef,
3838 NL80211_RADAR_CAC_ABORTED,
3839 GFP_KERNEL);
3840 }
3841 }
3842 mutex_unlock(&local->mtx);
3843}
3844
3845void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3846{
3847 struct ieee80211_local *local =
3848 container_of(work, struct ieee80211_local, radar_detected_work);
3849 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3850 struct ieee80211_chanctx *ctx;
3851 int num_chanctx = 0;
3852
3853 mutex_lock(&local->chanctx_mtx);
3854 list_for_each_entry(ctx, &local->chanctx_list, list) {
3855 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3856 continue;
3857
3858 num_chanctx++;
3859 chandef = ctx->conf.def;
3860 }
3861 mutex_unlock(&local->chanctx_mtx);
3862
3863 wiphy_lock(local->hw.wiphy);
3864 ieee80211_dfs_cac_cancel(local);
3865 wiphy_unlock(local->hw.wiphy);
3866
3867 if (num_chanctx > 1)
3868 /* XXX: multi-channel is not supported yet */
3869 WARN_ON(1);
3870 else
3871 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
3872}
3873
3874void ieee80211_radar_detected(struct ieee80211_hw *hw)
3875{
3876 struct ieee80211_local *local = hw_to_local(hw);
3877
3878 trace_api_radar_detected(local);
3879
3880 schedule_work(&local->radar_detected_work);
3881}
3882EXPORT_SYMBOL(ieee80211_radar_detected);
3883
3884u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3885{
3886 u32 ret;
3887 int tmp;
3888
3889 switch (c->width) {
3890 case NL80211_CHAN_WIDTH_20:
3891 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3892 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3893 break;
3894 case NL80211_CHAN_WIDTH_40:
3895 c->width = NL80211_CHAN_WIDTH_20;
3896 c->center_freq1 = c->chan->center_freq;
3897 ret = IEEE80211_STA_DISABLE_40MHZ |
3898 IEEE80211_STA_DISABLE_VHT;
3899 break;
3900 case NL80211_CHAN_WIDTH_80:
3901 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3902 /* n_P40 */
3903 tmp /= 2;
3904 /* freq_P40 */
3905 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3906 c->width = NL80211_CHAN_WIDTH_40;
3907 ret = IEEE80211_STA_DISABLE_VHT;
3908 break;
3909 case NL80211_CHAN_WIDTH_80P80:
3910 c->center_freq2 = 0;
3911 c->width = NL80211_CHAN_WIDTH_80;
3912 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3913 IEEE80211_STA_DISABLE_160MHZ;
3914 break;
3915 case NL80211_CHAN_WIDTH_160:
3916 /* n_P20 */
3917 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3918 /* n_P80 */
3919 tmp /= 4;
3920 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3921 c->width = NL80211_CHAN_WIDTH_80;
3922 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3923 IEEE80211_STA_DISABLE_160MHZ;
3924 break;
3925 default:
3926 case NL80211_CHAN_WIDTH_20_NOHT:
3927 WARN_ON_ONCE(1);
3928 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3929 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3930 break;
3931 case NL80211_CHAN_WIDTH_1:
3932 case NL80211_CHAN_WIDTH_2:
3933 case NL80211_CHAN_WIDTH_4:
3934 case NL80211_CHAN_WIDTH_8:
3935 case NL80211_CHAN_WIDTH_16:
3936 case NL80211_CHAN_WIDTH_5:
3937 case NL80211_CHAN_WIDTH_10:
3938 WARN_ON_ONCE(1);
3939 /* keep c->width */
3940 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3941 break;
3942 }
3943
3944 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3945
3946 return ret;
3947}
3948
3949/*
3950 * Returns true if smps_mode_new is strictly more restrictive than
3951 * smps_mode_old.
3952 */
3953bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3954 enum ieee80211_smps_mode smps_mode_new)
3955{
3956 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3957 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3958 return false;
3959
3960 switch (smps_mode_old) {
3961 case IEEE80211_SMPS_STATIC:
3962 return false;
3963 case IEEE80211_SMPS_DYNAMIC:
3964 return smps_mode_new == IEEE80211_SMPS_STATIC;
3965 case IEEE80211_SMPS_OFF:
3966 return smps_mode_new != IEEE80211_SMPS_OFF;
3967 default:
3968 WARN_ON(1);
3969 }
3970
3971 return false;
3972}
3973
3974int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3975 struct cfg80211_csa_settings *csa_settings)
3976{
3977 struct sk_buff *skb;
3978 struct ieee80211_mgmt *mgmt;
3979 struct ieee80211_local *local = sdata->local;
3980 int freq;
3981 int hdr_len = offsetofend(struct ieee80211_mgmt,
3982 u.action.u.chan_switch);
3983 u8 *pos;
3984
3985 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3986 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3987 return -EOPNOTSUPP;
3988
3989 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3990 5 + /* channel switch announcement element */
3991 3 + /* secondary channel offset element */
3992 5 + /* wide bandwidth channel switch announcement */
3993 8); /* mesh channel switch parameters element */
3994 if (!skb)
3995 return -ENOMEM;
3996
3997 skb_reserve(skb, local->tx_headroom);
3998 mgmt = skb_put_zero(skb, hdr_len);
3999 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4000 IEEE80211_STYPE_ACTION);
4001
4002 eth_broadcast_addr(mgmt->da);
4003 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4004 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4005 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4006 } else {
4007 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4008 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4009 }
4010 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4011 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4012 pos = skb_put(skb, 5);
4013 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
4014 *pos++ = 3; /* IE length */
4015 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
4016 freq = csa_settings->chandef.chan->center_freq;
4017 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
4018 *pos++ = csa_settings->count; /* count */
4019
4020 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4021 enum nl80211_channel_type ch_type;
4022
4023 skb_put(skb, 3);
4024 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
4025 *pos++ = 1; /* IE length */
4026 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4027 if (ch_type == NL80211_CHAN_HT40PLUS)
4028 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4029 else
4030 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4031 }
4032
4033 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4034 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4035
4036 skb_put(skb, 8);
4037 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
4038 *pos++ = 6; /* IE length */
4039 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
4040 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
4041 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4042 *pos++ |= csa_settings->block_tx ?
4043 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4044 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4045 pos += 2;
4046 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4047 pos += 2;
4048 }
4049
4050 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4051 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4052 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4053 skb_put(skb, 5);
4054 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4055 }
4056
4057 ieee80211_tx_skb(sdata, skb);
4058 return 0;
4059}
4060
4061bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
4062{
4063 return !(cs == NULL || cs->cipher == 0 ||
4064 cs->hdr_len < cs->pn_len + cs->pn_off ||
4065 cs->hdr_len <= cs->key_idx_off ||
4066 cs->key_idx_shift > 7 ||
4067 cs->key_idx_mask == 0);
4068}
4069
4070bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
4071{
4072 int i;
4073
4074 /* Ensure we have enough iftype bitmap space for all iftype values */
4075 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
4076
4077 for (i = 0; i < n; i++)
4078 if (!ieee80211_cs_valid(&cs[i]))
4079 return false;
4080
4081 return true;
4082}
4083
4084const struct ieee80211_cipher_scheme *
4085ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
4086 enum nl80211_iftype iftype)
4087{
4088 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
4089 int n = local->hw.n_cipher_schemes;
4090 int i;
4091 const struct ieee80211_cipher_scheme *cs = NULL;
4092
4093 for (i = 0; i < n; i++) {
4094 if (l[i].cipher == cipher) {
4095 cs = &l[i];
4096 break;
4097 }
4098 }
4099
4100 if (!cs || !(cs->iftype & BIT(iftype)))
4101 return NULL;
4102
4103 return cs;
4104}
4105
4106int ieee80211_cs_headroom(struct ieee80211_local *local,
4107 struct cfg80211_crypto_settings *crypto,
4108 enum nl80211_iftype iftype)
4109{
4110 const struct ieee80211_cipher_scheme *cs;
4111 int headroom = IEEE80211_ENCRYPT_HEADROOM;
4112 int i;
4113
4114 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
4115 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
4116 iftype);
4117
4118 if (cs && headroom < cs->hdr_len)
4119 headroom = cs->hdr_len;
4120 }
4121
4122 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
4123 if (cs && headroom < cs->hdr_len)
4124 headroom = cs->hdr_len;
4125
4126 return headroom;
4127}
4128
4129static bool
4130ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4131{
4132 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4133 int skip;
4134
4135 if (end > 0)
4136 return false;
4137
4138 /* One shot NOA */
4139 if (data->count[i] == 1)
4140 return false;
4141
4142 if (data->desc[i].interval == 0)
4143 return false;
4144
4145 /* End time is in the past, check for repetitions */
4146 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4147 if (data->count[i] < 255) {
4148 if (data->count[i] <= skip) {
4149 data->count[i] = 0;
4150 return false;
4151 }
4152
4153 data->count[i] -= skip;
4154 }
4155
4156 data->desc[i].start += skip * data->desc[i].interval;
4157
4158 return true;
4159}
4160
4161static bool
4162ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4163 s32 *offset)
4164{
4165 bool ret = false;
4166 int i;
4167
4168 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4169 s32 cur;
4170
4171 if (!data->count[i])
4172 continue;
4173
4174 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4175 ret = true;
4176
4177 cur = data->desc[i].start - tsf;
4178 if (cur > *offset)
4179 continue;
4180
4181 cur = data->desc[i].start + data->desc[i].duration - tsf;
4182 if (cur > *offset)
4183 *offset = cur;
4184 }
4185
4186 return ret;
4187}
4188
4189static u32
4190ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4191{
4192 s32 offset = 0;
4193 int tries = 0;
4194 /*
4195 * arbitrary limit, used to avoid infinite loops when combined NoA
4196 * descriptors cover the full time period.
4197 */
4198 int max_tries = 5;
4199
4200 ieee80211_extend_absent_time(data, tsf, &offset);
4201 do {
4202 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4203 break;
4204
4205 tries++;
4206 } while (tries < max_tries);
4207
4208 return offset;
4209}
4210
4211void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4212{
4213 u32 next_offset = BIT(31) - 1;
4214 int i;
4215
4216 data->absent = 0;
4217 data->has_next_tsf = false;
4218 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4219 s32 start;
4220
4221 if (!data->count[i])
4222 continue;
4223
4224 ieee80211_extend_noa_desc(data, tsf, i);
4225 start = data->desc[i].start - tsf;
4226 if (start <= 0)
4227 data->absent |= BIT(i);
4228
4229 if (next_offset > start)
4230 next_offset = start;
4231
4232 data->has_next_tsf = true;
4233 }
4234
4235 if (data->absent)
4236 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4237
4238 data->next_tsf = tsf + next_offset;
4239}
4240EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4241
4242int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4243 struct ieee80211_noa_data *data, u32 tsf)
4244{
4245 int ret = 0;
4246 int i;
4247
4248 memset(data, 0, sizeof(*data));
4249
4250 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4251 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4252
4253 if (!desc->count || !desc->duration)
4254 continue;
4255
4256 data->count[i] = desc->count;
4257 data->desc[i].start = le32_to_cpu(desc->start_time);
4258 data->desc[i].duration = le32_to_cpu(desc->duration);
4259 data->desc[i].interval = le32_to_cpu(desc->interval);
4260
4261 if (data->count[i] > 1 &&
4262 data->desc[i].interval < data->desc[i].duration)
4263 continue;
4264
4265 ieee80211_extend_noa_desc(data, tsf, i);
4266 ret++;
4267 }
4268
4269 if (ret)
4270 ieee80211_update_p2p_noa(data, tsf);
4271
4272 return ret;
4273}
4274EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4275
4276void ieee80211_recalc_dtim(struct ieee80211_local *local,
4277 struct ieee80211_sub_if_data *sdata)
4278{
4279 u64 tsf = drv_get_tsf(local, sdata);
4280 u64 dtim_count = 0;
4281 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4282 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4283 struct ps_data *ps;
4284 u8 bcns_from_dtim;
4285
4286 if (tsf == -1ULL || !beacon_int || !dtim_period)
4287 return;
4288
4289 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4290 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4291 if (!sdata->bss)
4292 return;
4293
4294 ps = &sdata->bss->ps;
4295 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4296 ps = &sdata->u.mesh.ps;
4297 } else {
4298 return;
4299 }
4300
4301 /*
4302 * actually finds last dtim_count, mac80211 will update in
4303 * __beacon_add_tim().
4304 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4305 */
4306 do_div(tsf, beacon_int);
4307 bcns_from_dtim = do_div(tsf, dtim_period);
4308 /* just had a DTIM */
4309 if (!bcns_from_dtim)
4310 dtim_count = 0;
4311 else
4312 dtim_count = dtim_period - bcns_from_dtim;
4313
4314 ps->dtim_count = dtim_count;
4315}
4316
4317static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4318 struct ieee80211_chanctx *ctx)
4319{
4320 struct ieee80211_sub_if_data *sdata;
4321 u8 radar_detect = 0;
4322
4323 lockdep_assert_held(&local->chanctx_mtx);
4324
4325 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4326 return 0;
4327
4328 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4329 if (sdata->reserved_radar_required)
4330 radar_detect |= BIT(sdata->reserved_chandef.width);
4331
4332 /*
4333 * An in-place reservation context should not have any assigned vifs
4334 * until it replaces the other context.
4335 */
4336 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4337 !list_empty(&ctx->assigned_vifs));
4338
4339 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4340 if (sdata->radar_required)
4341 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4342
4343 return radar_detect;
4344}
4345
4346int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4347 const struct cfg80211_chan_def *chandef,
4348 enum ieee80211_chanctx_mode chanmode,
4349 u8 radar_detect)
4350{
4351 struct ieee80211_local *local = sdata->local;
4352 struct ieee80211_sub_if_data *sdata_iter;
4353 enum nl80211_iftype iftype = sdata->wdev.iftype;
4354 struct ieee80211_chanctx *ctx;
4355 int total = 1;
4356 struct iface_combination_params params = {
4357 .radar_detect = radar_detect,
4358 };
4359
4360 lockdep_assert_held(&local->chanctx_mtx);
4361
4362 if (WARN_ON(hweight32(radar_detect) > 1))
4363 return -EINVAL;
4364
4365 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4366 !chandef->chan))
4367 return -EINVAL;
4368
4369 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4370 return -EINVAL;
4371
4372 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4373 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4374 /*
4375 * always passing this is harmless, since it'll be the
4376 * same value that cfg80211 finds if it finds the same
4377 * interface ... and that's always allowed
4378 */
4379 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4380 }
4381
4382 /* Always allow software iftypes */
4383 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4384 if (radar_detect)
4385 return -EINVAL;
4386 return 0;
4387 }
4388
4389 if (chandef)
4390 params.num_different_channels = 1;
4391
4392 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4393 params.iftype_num[iftype] = 1;
4394
4395 list_for_each_entry(ctx, &local->chanctx_list, list) {
4396 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4397 continue;
4398 params.radar_detect |=
4399 ieee80211_chanctx_radar_detect(local, ctx);
4400 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4401 params.num_different_channels++;
4402 continue;
4403 }
4404 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4405 cfg80211_chandef_compatible(chandef,
4406 &ctx->conf.def))
4407 continue;
4408 params.num_different_channels++;
4409 }
4410
4411 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4412 struct wireless_dev *wdev_iter;
4413
4414 wdev_iter = &sdata_iter->wdev;
4415
4416 if (sdata_iter == sdata ||
4417 !ieee80211_sdata_running(sdata_iter) ||
4418 cfg80211_iftype_allowed(local->hw.wiphy,
4419 wdev_iter->iftype, 0, 1))
4420 continue;
4421
4422 params.iftype_num[wdev_iter->iftype]++;
4423 total++;
4424 }
4425
4426 if (total == 1 && !params.radar_detect)
4427 return 0;
4428
4429 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4430}
4431
4432static void
4433ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4434 void *data)
4435{
4436 u32 *max_num_different_channels = data;
4437
4438 *max_num_different_channels = max(*max_num_different_channels,
4439 c->num_different_channels);
4440}
4441
4442int ieee80211_max_num_channels(struct ieee80211_local *local)
4443{
4444 struct ieee80211_sub_if_data *sdata;
4445 struct ieee80211_chanctx *ctx;
4446 u32 max_num_different_channels = 1;
4447 int err;
4448 struct iface_combination_params params = {0};
4449
4450 lockdep_assert_held(&local->chanctx_mtx);
4451
4452 list_for_each_entry(ctx, &local->chanctx_list, list) {
4453 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4454 continue;
4455
4456 params.num_different_channels++;
4457
4458 params.radar_detect |=
4459 ieee80211_chanctx_radar_detect(local, ctx);
4460 }
4461
4462 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4463 params.iftype_num[sdata->wdev.iftype]++;
4464
4465 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4466 ieee80211_iter_max_chans,
4467 &max_num_different_channels);
4468 if (err < 0)
4469 return err;
4470
4471 return max_num_different_channels;
4472}
4473
4474void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4475 struct ieee80211_sta_s1g_cap *caps,
4476 struct sk_buff *skb)
4477{
4478 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4479 struct ieee80211_s1g_cap s1g_capab;
4480 u8 *pos;
4481 int i;
4482
4483 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4484 return;
4485
4486 if (!caps->s1g)
4487 return;
4488
4489 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4490 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4491
4492 /* override the capability info */
4493 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4494 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4495
4496 s1g_capab.capab_info[i] &= ~mask;
4497 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4498 }
4499
4500 /* then MCS and NSS set */
4501 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4502 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4503
4504 s1g_capab.supp_mcs_nss[i] &= ~mask;
4505 s1g_capab.supp_mcs_nss[i] |=
4506 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4507 }
4508
4509 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4510 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4511 *pos++ = sizeof(s1g_capab);
4512
4513 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4514}
4515
4516void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4517 struct sk_buff *skb)
4518{
4519 u8 *pos = skb_put(skb, 3);
4520
4521 *pos++ = WLAN_EID_AID_REQUEST;
4522 *pos++ = 1;
4523 *pos++ = 0;
4524}
4525
4526u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4527{
4528 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4529 *buf++ = 7; /* len */
4530 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4531 *buf++ = 0x50;
4532 *buf++ = 0xf2;
4533 *buf++ = 2; /* WME */
4534 *buf++ = 0; /* WME info */
4535 *buf++ = 1; /* WME ver */
4536 *buf++ = qosinfo; /* U-APSD no in use */
4537
4538 return buf;
4539}
4540
4541void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4542 unsigned long *frame_cnt,
4543 unsigned long *byte_cnt)
4544{
4545 struct txq_info *txqi = to_txq_info(txq);
4546 u32 frag_cnt = 0, frag_bytes = 0;
4547 struct sk_buff *skb;
4548
4549 skb_queue_walk(&txqi->frags, skb) {
4550 frag_cnt++;
4551 frag_bytes += skb->len;
4552 }
4553
4554 if (frame_cnt)
4555 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4556
4557 if (byte_cnt)
4558 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4559}
4560EXPORT_SYMBOL(ieee80211_txq_get_depth);
4561
4562const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4563 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4564 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4565 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4566 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4567};
4568
4569u16 ieee80211_encode_usf(int listen_interval)
4570{
4571 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4572 u16 ui, usf = 0;
4573
4574 /* find greatest USF */
4575 while (usf < IEEE80211_MAX_USF) {
4576 if (listen_interval % listen_int_usf[usf + 1])
4577 break;
4578 usf += 1;
4579 }
4580 ui = listen_interval / listen_int_usf[usf];
4581
4582 /* error if there is a remainder. Should've been checked by user */
4583 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4584 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4585 FIELD_PREP(LISTEN_INT_UI, ui);
4586
4587 return (u16) listen_interval;
4588}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005-2006, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2013-2014 Intel Mobile Communications GmbH
8 * Copyright (C) 2015-2017 Intel Deutschland GmbH
9 * Copyright (C) 2018-2023 Intel Corporation
10 *
11 * utilities for mac80211
12 */
13
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#include <kunit/visibility.h>
28
29#include "ieee80211_i.h"
30#include "driver-ops.h"
31#include "rate.h"
32#include "mesh.h"
33#include "wme.h"
34#include "led.h"
35#include "wep.h"
36
37/* privid for wiphys to determine whether they belong to us or not */
38const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
39
40struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
41{
42 struct ieee80211_local *local;
43
44 local = wiphy_priv(wiphy);
45 return &local->hw;
46}
47EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
48
49u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
50 enum nl80211_iftype type)
51{
52 __le16 fc = hdr->frame_control;
53
54 if (ieee80211_is_data(fc)) {
55 if (len < 24) /* drop incorrect hdr len (data) */
56 return NULL;
57
58 if (ieee80211_has_a4(fc))
59 return NULL;
60 if (ieee80211_has_tods(fc))
61 return hdr->addr1;
62 if (ieee80211_has_fromds(fc))
63 return hdr->addr2;
64
65 return hdr->addr3;
66 }
67
68 if (ieee80211_is_s1g_beacon(fc)) {
69 struct ieee80211_ext *ext = (void *) hdr;
70
71 return ext->u.s1g_beacon.sa;
72 }
73
74 if (ieee80211_is_mgmt(fc)) {
75 if (len < 24) /* drop incorrect hdr len (mgmt) */
76 return NULL;
77 return hdr->addr3;
78 }
79
80 if (ieee80211_is_ctl(fc)) {
81 if (ieee80211_is_pspoll(fc))
82 return hdr->addr1;
83
84 if (ieee80211_is_back_req(fc)) {
85 switch (type) {
86 case NL80211_IFTYPE_STATION:
87 return hdr->addr2;
88 case NL80211_IFTYPE_AP:
89 case NL80211_IFTYPE_AP_VLAN:
90 return hdr->addr1;
91 default:
92 break; /* fall through to the return */
93 }
94 }
95 }
96
97 return NULL;
98}
99EXPORT_SYMBOL(ieee80211_get_bssid);
100
101void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
102{
103 struct sk_buff *skb;
104 struct ieee80211_hdr *hdr;
105
106 skb_queue_walk(&tx->skbs, skb) {
107 hdr = (struct ieee80211_hdr *) skb->data;
108 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
109 }
110}
111
112int ieee80211_frame_duration(enum nl80211_band band, size_t len,
113 int rate, int erp, int short_preamble)
114{
115 int dur;
116
117 /* calculate duration (in microseconds, rounded up to next higher
118 * integer if it includes a fractional microsecond) to send frame of
119 * len bytes (does not include FCS) at the given rate. Duration will
120 * also include SIFS.
121 *
122 * rate is in 100 kbps, so divident is multiplied by 10 in the
123 * DIV_ROUND_UP() operations.
124 */
125
126 if (band == NL80211_BAND_5GHZ || erp) {
127 /*
128 * OFDM:
129 *
130 * N_DBPS = DATARATE x 4
131 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
132 * (16 = SIGNAL time, 6 = tail bits)
133 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
134 *
135 * T_SYM = 4 usec
136 * 802.11a - 18.5.2: aSIFSTime = 16 usec
137 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
138 * signal ext = 6 usec
139 */
140 dur = 16; /* SIFS + signal ext */
141 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
142 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
143
144 /* rates should already consider the channel bandwidth,
145 * don't apply divisor again.
146 */
147 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
148 4 * rate); /* T_SYM x N_SYM */
149 } else {
150 /*
151 * 802.11b or 802.11g with 802.11b compatibility:
152 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
153 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
154 *
155 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
156 * aSIFSTime = 10 usec
157 * aPreambleLength = 144 usec or 72 usec with short preamble
158 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
159 */
160 dur = 10; /* aSIFSTime = 10 usec */
161 dur += short_preamble ? (72 + 24) : (144 + 48);
162
163 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
164 }
165
166 return dur;
167}
168
169/* Exported duration function for driver use */
170__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
171 struct ieee80211_vif *vif,
172 enum nl80211_band band,
173 size_t frame_len,
174 struct ieee80211_rate *rate)
175{
176 struct ieee80211_sub_if_data *sdata;
177 u16 dur;
178 int erp;
179 bool short_preamble = false;
180
181 erp = 0;
182 if (vif) {
183 sdata = vif_to_sdata(vif);
184 short_preamble = sdata->vif.bss_conf.use_short_preamble;
185 if (sdata->deflink.operating_11g_mode)
186 erp = rate->flags & IEEE80211_RATE_ERP_G;
187 }
188
189 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
190 short_preamble);
191
192 return cpu_to_le16(dur);
193}
194EXPORT_SYMBOL(ieee80211_generic_frame_duration);
195
196__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
197 struct ieee80211_vif *vif, size_t frame_len,
198 const struct ieee80211_tx_info *frame_txctl)
199{
200 struct ieee80211_local *local = hw_to_local(hw);
201 struct ieee80211_rate *rate;
202 struct ieee80211_sub_if_data *sdata;
203 bool short_preamble;
204 int erp, bitrate;
205 u16 dur;
206 struct ieee80211_supported_band *sband;
207
208 sband = local->hw.wiphy->bands[frame_txctl->band];
209
210 short_preamble = false;
211
212 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
213
214 erp = 0;
215 if (vif) {
216 sdata = vif_to_sdata(vif);
217 short_preamble = sdata->vif.bss_conf.use_short_preamble;
218 if (sdata->deflink.operating_11g_mode)
219 erp = rate->flags & IEEE80211_RATE_ERP_G;
220 }
221
222 bitrate = rate->bitrate;
223
224 /* CTS duration */
225 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
226 erp, short_preamble);
227 /* Data frame duration */
228 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
229 erp, short_preamble);
230 /* ACK duration */
231 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
232 erp, short_preamble);
233
234 return cpu_to_le16(dur);
235}
236EXPORT_SYMBOL(ieee80211_rts_duration);
237
238__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
239 struct ieee80211_vif *vif,
240 size_t frame_len,
241 const struct ieee80211_tx_info *frame_txctl)
242{
243 struct ieee80211_local *local = hw_to_local(hw);
244 struct ieee80211_rate *rate;
245 struct ieee80211_sub_if_data *sdata;
246 bool short_preamble;
247 int erp, bitrate;
248 u16 dur;
249 struct ieee80211_supported_band *sband;
250
251 sband = local->hw.wiphy->bands[frame_txctl->band];
252
253 short_preamble = false;
254
255 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
256 erp = 0;
257 if (vif) {
258 sdata = vif_to_sdata(vif);
259 short_preamble = sdata->vif.bss_conf.use_short_preamble;
260 if (sdata->deflink.operating_11g_mode)
261 erp = rate->flags & IEEE80211_RATE_ERP_G;
262 }
263
264 bitrate = rate->bitrate;
265
266 /* Data frame duration */
267 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
268 erp, short_preamble);
269 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
270 /* ACK duration */
271 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
272 erp, short_preamble);
273 }
274
275 return cpu_to_le16(dur);
276}
277EXPORT_SYMBOL(ieee80211_ctstoself_duration);
278
279static void wake_tx_push_queue(struct ieee80211_local *local,
280 struct ieee80211_sub_if_data *sdata,
281 struct ieee80211_txq *queue)
282{
283 struct ieee80211_tx_control control = {
284 .sta = queue->sta,
285 };
286 struct sk_buff *skb;
287
288 while (1) {
289 skb = ieee80211_tx_dequeue(&local->hw, queue);
290 if (!skb)
291 break;
292
293 drv_tx(local, &control, skb);
294 }
295}
296
297/* wake_tx_queue handler for driver not implementing a custom one*/
298void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw,
299 struct ieee80211_txq *txq)
300{
301 struct ieee80211_local *local = hw_to_local(hw);
302 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif);
303 struct ieee80211_txq *queue;
304
305 spin_lock(&local->handle_wake_tx_queue_lock);
306
307 /* Use ieee80211_next_txq() for airtime fairness accounting */
308 ieee80211_txq_schedule_start(hw, txq->ac);
309 while ((queue = ieee80211_next_txq(hw, txq->ac))) {
310 wake_tx_push_queue(local, sdata, queue);
311 ieee80211_return_txq(hw, queue, false);
312 }
313 ieee80211_txq_schedule_end(hw, txq->ac);
314 spin_unlock(&local->handle_wake_tx_queue_lock);
315}
316EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue);
317
318static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
319{
320 struct ieee80211_local *local = sdata->local;
321 struct ieee80211_vif *vif = &sdata->vif;
322 struct fq *fq = &local->fq;
323 struct ps_data *ps = NULL;
324 struct txq_info *txqi;
325 struct sta_info *sta;
326 int i;
327
328 local_bh_disable();
329 spin_lock(&fq->lock);
330
331 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state))
332 goto out;
333
334 if (sdata->vif.type == NL80211_IFTYPE_AP)
335 ps = &sdata->bss->ps;
336
337 list_for_each_entry_rcu(sta, &local->sta_list, list) {
338 if (sdata != sta->sdata)
339 continue;
340
341 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
342 struct ieee80211_txq *txq = sta->sta.txq[i];
343
344 if (!txq)
345 continue;
346
347 txqi = to_txq_info(txq);
348
349 if (ac != txq->ac)
350 continue;
351
352 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY,
353 &txqi->flags))
354 continue;
355
356 spin_unlock(&fq->lock);
357 drv_wake_tx_queue(local, txqi);
358 spin_lock(&fq->lock);
359 }
360 }
361
362 if (!vif->txq)
363 goto out;
364
365 txqi = to_txq_info(vif->txq);
366
367 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ||
368 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
369 goto out;
370
371 spin_unlock(&fq->lock);
372
373 drv_wake_tx_queue(local, txqi);
374 local_bh_enable();
375 return;
376out:
377 spin_unlock(&fq->lock);
378 local_bh_enable();
379}
380
381static void
382__releases(&local->queue_stop_reason_lock)
383__acquires(&local->queue_stop_reason_lock)
384_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
385{
386 struct ieee80211_sub_if_data *sdata;
387 int n_acs = IEEE80211_NUM_ACS;
388 int i;
389
390 rcu_read_lock();
391
392 if (local->hw.queues < IEEE80211_NUM_ACS)
393 n_acs = 1;
394
395 for (i = 0; i < local->hw.queues; i++) {
396 if (local->queue_stop_reasons[i])
397 continue;
398
399 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
400 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
401 int ac;
402
403 for (ac = 0; ac < n_acs; ac++) {
404 int ac_queue = sdata->vif.hw_queue[ac];
405
406 if (ac_queue == i ||
407 sdata->vif.cab_queue == i)
408 __ieee80211_wake_txqs(sdata, ac);
409 }
410 }
411 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
412 }
413
414 rcu_read_unlock();
415}
416
417void ieee80211_wake_txqs(struct tasklet_struct *t)
418{
419 struct ieee80211_local *local = from_tasklet(local, t,
420 wake_txqs_tasklet);
421 unsigned long flags;
422
423 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
424 _ieee80211_wake_txqs(local, &flags);
425 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
426}
427
428static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
429 enum queue_stop_reason reason,
430 bool refcounted,
431 unsigned long *flags)
432{
433 struct ieee80211_local *local = hw_to_local(hw);
434
435 trace_wake_queue(local, queue, reason);
436
437 if (WARN_ON(queue >= hw->queues))
438 return;
439
440 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
441 return;
442
443 if (!refcounted) {
444 local->q_stop_reasons[queue][reason] = 0;
445 } else {
446 local->q_stop_reasons[queue][reason]--;
447 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
448 local->q_stop_reasons[queue][reason] = 0;
449 }
450
451 if (local->q_stop_reasons[queue][reason] == 0)
452 __clear_bit(reason, &local->queue_stop_reasons[queue]);
453
454 if (local->queue_stop_reasons[queue] != 0)
455 /* someone still has this queue stopped */
456 return;
457
458 if (!skb_queue_empty(&local->pending[queue]))
459 tasklet_schedule(&local->tx_pending_tasklet);
460
461 /*
462 * Calling _ieee80211_wake_txqs here can be a problem because it may
463 * release queue_stop_reason_lock which has been taken by
464 * __ieee80211_wake_queue's caller. It is certainly not very nice to
465 * release someone's lock, but it is fine because all the callers of
466 * __ieee80211_wake_queue call it right before releasing the lock.
467 */
468 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
469 tasklet_schedule(&local->wake_txqs_tasklet);
470 else
471 _ieee80211_wake_txqs(local, flags);
472}
473
474void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
475 enum queue_stop_reason reason,
476 bool refcounted)
477{
478 struct ieee80211_local *local = hw_to_local(hw);
479 unsigned long flags;
480
481 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
482 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
483 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
484}
485
486void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
487{
488 ieee80211_wake_queue_by_reason(hw, queue,
489 IEEE80211_QUEUE_STOP_REASON_DRIVER,
490 false);
491}
492EXPORT_SYMBOL(ieee80211_wake_queue);
493
494static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
495 enum queue_stop_reason reason,
496 bool refcounted)
497{
498 struct ieee80211_local *local = hw_to_local(hw);
499
500 trace_stop_queue(local, queue, reason);
501
502 if (WARN_ON(queue >= hw->queues))
503 return;
504
505 if (!refcounted)
506 local->q_stop_reasons[queue][reason] = 1;
507 else
508 local->q_stop_reasons[queue][reason]++;
509
510 set_bit(reason, &local->queue_stop_reasons[queue]);
511}
512
513void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
514 enum queue_stop_reason reason,
515 bool refcounted)
516{
517 struct ieee80211_local *local = hw_to_local(hw);
518 unsigned long flags;
519
520 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
521 __ieee80211_stop_queue(hw, queue, reason, refcounted);
522 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
523}
524
525void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
526{
527 ieee80211_stop_queue_by_reason(hw, queue,
528 IEEE80211_QUEUE_STOP_REASON_DRIVER,
529 false);
530}
531EXPORT_SYMBOL(ieee80211_stop_queue);
532
533void ieee80211_add_pending_skb(struct ieee80211_local *local,
534 struct sk_buff *skb)
535{
536 struct ieee80211_hw *hw = &local->hw;
537 unsigned long flags;
538 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
539 int queue = info->hw_queue;
540
541 if (WARN_ON(!info->control.vif)) {
542 ieee80211_free_txskb(&local->hw, skb);
543 return;
544 }
545
546 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
547 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
548 false);
549 __skb_queue_tail(&local->pending[queue], skb);
550 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
551 false, &flags);
552 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
553}
554
555void ieee80211_add_pending_skbs(struct ieee80211_local *local,
556 struct sk_buff_head *skbs)
557{
558 struct ieee80211_hw *hw = &local->hw;
559 struct sk_buff *skb;
560 unsigned long flags;
561 int queue, i;
562
563 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
564 while ((skb = skb_dequeue(skbs))) {
565 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
566
567 if (WARN_ON(!info->control.vif)) {
568 ieee80211_free_txskb(&local->hw, skb);
569 continue;
570 }
571
572 queue = info->hw_queue;
573
574 __ieee80211_stop_queue(hw, queue,
575 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
576 false);
577
578 __skb_queue_tail(&local->pending[queue], skb);
579 }
580
581 for (i = 0; i < hw->queues; i++)
582 __ieee80211_wake_queue(hw, i,
583 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
584 false, &flags);
585 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
586}
587
588void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
589 unsigned long queues,
590 enum queue_stop_reason reason,
591 bool refcounted)
592{
593 struct ieee80211_local *local = hw_to_local(hw);
594 unsigned long flags;
595 int i;
596
597 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
598
599 for_each_set_bit(i, &queues, hw->queues)
600 __ieee80211_stop_queue(hw, i, reason, refcounted);
601
602 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
603}
604
605void ieee80211_stop_queues(struct ieee80211_hw *hw)
606{
607 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
608 IEEE80211_QUEUE_STOP_REASON_DRIVER,
609 false);
610}
611EXPORT_SYMBOL(ieee80211_stop_queues);
612
613int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
614{
615 struct ieee80211_local *local = hw_to_local(hw);
616 unsigned long flags;
617 int ret;
618
619 if (WARN_ON(queue >= hw->queues))
620 return true;
621
622 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
623 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
624 &local->queue_stop_reasons[queue]);
625 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
626 return ret;
627}
628EXPORT_SYMBOL(ieee80211_queue_stopped);
629
630void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
631 unsigned long queues,
632 enum queue_stop_reason reason,
633 bool refcounted)
634{
635 struct ieee80211_local *local = hw_to_local(hw);
636 unsigned long flags;
637 int i;
638
639 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
640
641 for_each_set_bit(i, &queues, hw->queues)
642 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
643
644 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
645}
646
647void ieee80211_wake_queues(struct ieee80211_hw *hw)
648{
649 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
650 IEEE80211_QUEUE_STOP_REASON_DRIVER,
651 false);
652}
653EXPORT_SYMBOL(ieee80211_wake_queues);
654
655static unsigned int
656ieee80211_get_vif_queues(struct ieee80211_local *local,
657 struct ieee80211_sub_if_data *sdata)
658{
659 unsigned int queues;
660
661 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
662 int ac;
663
664 queues = 0;
665
666 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
667 queues |= BIT(sdata->vif.hw_queue[ac]);
668 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
669 queues |= BIT(sdata->vif.cab_queue);
670 } else {
671 /* all queues */
672 queues = BIT(local->hw.queues) - 1;
673 }
674
675 return queues;
676}
677
678void __ieee80211_flush_queues(struct ieee80211_local *local,
679 struct ieee80211_sub_if_data *sdata,
680 unsigned int queues, bool drop)
681{
682 if (!local->ops->flush)
683 return;
684
685 /*
686 * If no queue was set, or if the HW doesn't support
687 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
688 */
689 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
690 queues = ieee80211_get_vif_queues(local, sdata);
691
692 ieee80211_stop_queues_by_reason(&local->hw, queues,
693 IEEE80211_QUEUE_STOP_REASON_FLUSH,
694 false);
695
696 if (drop) {
697 struct sta_info *sta;
698
699 /* Purge the queues, so the frames on them won't be
700 * sent during __ieee80211_wake_queue()
701 */
702 list_for_each_entry(sta, &local->sta_list, list) {
703 if (sdata != sta->sdata)
704 continue;
705 ieee80211_purge_sta_txqs(sta);
706 }
707 }
708
709 drv_flush(local, sdata, queues, drop);
710
711 ieee80211_wake_queues_by_reason(&local->hw, queues,
712 IEEE80211_QUEUE_STOP_REASON_FLUSH,
713 false);
714}
715
716void ieee80211_flush_queues(struct ieee80211_local *local,
717 struct ieee80211_sub_if_data *sdata, bool drop)
718{
719 __ieee80211_flush_queues(local, sdata, 0, drop);
720}
721
722void ieee80211_stop_vif_queues(struct ieee80211_local *local,
723 struct ieee80211_sub_if_data *sdata,
724 enum queue_stop_reason reason)
725{
726 ieee80211_stop_queues_by_reason(&local->hw,
727 ieee80211_get_vif_queues(local, sdata),
728 reason, true);
729}
730
731void ieee80211_wake_vif_queues(struct ieee80211_local *local,
732 struct ieee80211_sub_if_data *sdata,
733 enum queue_stop_reason reason)
734{
735 ieee80211_wake_queues_by_reason(&local->hw,
736 ieee80211_get_vif_queues(local, sdata),
737 reason, true);
738}
739
740static void __iterate_interfaces(struct ieee80211_local *local,
741 u32 iter_flags,
742 void (*iterator)(void *data, u8 *mac,
743 struct ieee80211_vif *vif),
744 void *data)
745{
746 struct ieee80211_sub_if_data *sdata;
747 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
748
749 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
750 switch (sdata->vif.type) {
751 case NL80211_IFTYPE_MONITOR:
752 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
753 continue;
754 break;
755 case NL80211_IFTYPE_AP_VLAN:
756 continue;
757 default:
758 break;
759 }
760 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
761 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
762 continue;
763 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
764 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
765 continue;
766 if (ieee80211_sdata_running(sdata) || !active_only)
767 iterator(data, sdata->vif.addr,
768 &sdata->vif);
769 }
770
771 sdata = rcu_dereference_check(local->monitor_sdata,
772 lockdep_is_held(&local->iflist_mtx) ||
773 lockdep_is_held(&local->hw.wiphy->mtx));
774 if (sdata &&
775 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
776 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
777 iterator(data, sdata->vif.addr, &sdata->vif);
778}
779
780void ieee80211_iterate_interfaces(
781 struct ieee80211_hw *hw, u32 iter_flags,
782 void (*iterator)(void *data, u8 *mac,
783 struct ieee80211_vif *vif),
784 void *data)
785{
786 struct ieee80211_local *local = hw_to_local(hw);
787
788 mutex_lock(&local->iflist_mtx);
789 __iterate_interfaces(local, iter_flags, iterator, data);
790 mutex_unlock(&local->iflist_mtx);
791}
792EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
793
794void ieee80211_iterate_active_interfaces_atomic(
795 struct ieee80211_hw *hw, u32 iter_flags,
796 void (*iterator)(void *data, u8 *mac,
797 struct ieee80211_vif *vif),
798 void *data)
799{
800 struct ieee80211_local *local = hw_to_local(hw);
801
802 rcu_read_lock();
803 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
804 iterator, data);
805 rcu_read_unlock();
806}
807EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
808
809void ieee80211_iterate_active_interfaces_mtx(
810 struct ieee80211_hw *hw, u32 iter_flags,
811 void (*iterator)(void *data, u8 *mac,
812 struct ieee80211_vif *vif),
813 void *data)
814{
815 struct ieee80211_local *local = hw_to_local(hw);
816
817 lockdep_assert_wiphy(hw->wiphy);
818
819 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
820 iterator, data);
821}
822EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
823
824static void __iterate_stations(struct ieee80211_local *local,
825 void (*iterator)(void *data,
826 struct ieee80211_sta *sta),
827 void *data)
828{
829 struct sta_info *sta;
830
831 list_for_each_entry_rcu(sta, &local->sta_list, list) {
832 if (!sta->uploaded)
833 continue;
834
835 iterator(data, &sta->sta);
836 }
837}
838
839void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
840 void (*iterator)(void *data,
841 struct ieee80211_sta *sta),
842 void *data)
843{
844 struct ieee80211_local *local = hw_to_local(hw);
845
846 rcu_read_lock();
847 __iterate_stations(local, iterator, data);
848 rcu_read_unlock();
849}
850EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
851
852struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
853{
854 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
855
856 if (!ieee80211_sdata_running(sdata) ||
857 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
858 return NULL;
859 return &sdata->vif;
860}
861EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
862
863struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
864{
865 if (!vif)
866 return NULL;
867
868 return &vif_to_sdata(vif)->wdev;
869}
870EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
871
872/*
873 * Nothing should have been stuffed into the workqueue during
874 * the suspend->resume cycle. Since we can't check each caller
875 * of this function if we are already quiescing / suspended,
876 * check here and don't WARN since this can actually happen when
877 * the rx path (for example) is racing against __ieee80211_suspend
878 * and suspending / quiescing was set after the rx path checked
879 * them.
880 */
881static bool ieee80211_can_queue_work(struct ieee80211_local *local)
882{
883 if (local->quiescing || (local->suspended && !local->resuming)) {
884 pr_warn("queueing ieee80211 work while going to suspend\n");
885 return false;
886 }
887
888 return true;
889}
890
891void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
892{
893 struct ieee80211_local *local = hw_to_local(hw);
894
895 if (!ieee80211_can_queue_work(local))
896 return;
897
898 queue_work(local->workqueue, work);
899}
900EXPORT_SYMBOL(ieee80211_queue_work);
901
902void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
903 struct delayed_work *dwork,
904 unsigned long delay)
905{
906 struct ieee80211_local *local = hw_to_local(hw);
907
908 if (!ieee80211_can_queue_work(local))
909 return;
910
911 queue_delayed_work(local->workqueue, dwork, delay);
912}
913EXPORT_SYMBOL(ieee80211_queue_delayed_work);
914
915static void
916ieee80211_parse_extension_element(u32 *crc,
917 const struct element *elem,
918 struct ieee802_11_elems *elems,
919 struct ieee80211_elems_parse_params *params)
920{
921 const void *data = elem->data + 1;
922 bool calc_crc = false;
923 u8 len;
924
925 if (!elem->datalen)
926 return;
927
928 len = elem->datalen - 1;
929
930 switch (elem->data[0]) {
931 case WLAN_EID_EXT_HE_MU_EDCA:
932 calc_crc = true;
933 if (len >= sizeof(*elems->mu_edca_param_set))
934 elems->mu_edca_param_set = data;
935 break;
936 case WLAN_EID_EXT_HE_CAPABILITY:
937 if (ieee80211_he_capa_size_ok(data, len)) {
938 elems->he_cap = data;
939 elems->he_cap_len = len;
940 }
941 break;
942 case WLAN_EID_EXT_HE_OPERATION:
943 calc_crc = true;
944 if (len >= sizeof(*elems->he_operation) &&
945 len >= ieee80211_he_oper_size(data) - 1)
946 elems->he_operation = data;
947 break;
948 case WLAN_EID_EXT_UORA:
949 if (len >= 1)
950 elems->uora_element = data;
951 break;
952 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
953 if (len == 3)
954 elems->max_channel_switch_time = data;
955 break;
956 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
957 if (len >= sizeof(*elems->mbssid_config_ie))
958 elems->mbssid_config_ie = data;
959 break;
960 case WLAN_EID_EXT_HE_SPR:
961 if (len >= sizeof(*elems->he_spr) &&
962 len >= ieee80211_he_spr_size(data))
963 elems->he_spr = data;
964 break;
965 case WLAN_EID_EXT_HE_6GHZ_CAPA:
966 if (len >= sizeof(*elems->he_6ghz_capa))
967 elems->he_6ghz_capa = data;
968 break;
969 case WLAN_EID_EXT_EHT_CAPABILITY:
970 if (ieee80211_eht_capa_size_ok(elems->he_cap,
971 data, len,
972 params->from_ap)) {
973 elems->eht_cap = data;
974 elems->eht_cap_len = len;
975 }
976 break;
977 case WLAN_EID_EXT_EHT_OPERATION:
978 if (ieee80211_eht_oper_size_ok(data, len))
979 elems->eht_operation = data;
980 calc_crc = true;
981 break;
982 case WLAN_EID_EXT_EHT_MULTI_LINK:
983 calc_crc = true;
984
985 if (ieee80211_mle_size_ok(data, len)) {
986 const struct ieee80211_multi_link_elem *mle =
987 (void *)data;
988
989 switch (le16_get_bits(mle->control,
990 IEEE80211_ML_CONTROL_TYPE)) {
991 case IEEE80211_ML_CONTROL_TYPE_BASIC:
992 elems->ml_basic_elem = (void *)elem;
993 elems->ml_basic = data;
994 elems->ml_basic_len = len;
995 break;
996 case IEEE80211_ML_CONTROL_TYPE_RECONF:
997 elems->ml_reconf_elem = (void *)elem;
998 elems->ml_reconf = data;
999 elems->ml_reconf_len = len;
1000 break;
1001 default:
1002 break;
1003 }
1004 }
1005 break;
1006 case WLAN_EID_EXT_BANDWIDTH_INDICATION:
1007 if (ieee80211_bandwidth_indication_size_ok(data, len))
1008 elems->bandwidth_indication = data;
1009 calc_crc = true;
1010 break;
1011 case WLAN_EID_EXT_TID_TO_LINK_MAPPING:
1012 calc_crc = true;
1013 if (ieee80211_tid_to_link_map_size_ok(data, len) &&
1014 elems->ttlm_num < ARRAY_SIZE(elems->ttlm)) {
1015 elems->ttlm[elems->ttlm_num] = (void *)data;
1016 elems->ttlm_num++;
1017 }
1018 break;
1019 }
1020
1021 if (crc && calc_crc)
1022 *crc = crc32_be(*crc, (void *)elem, elem->datalen + 2);
1023}
1024
1025static u32
1026_ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
1027 struct ieee802_11_elems *elems,
1028 const struct element *check_inherit)
1029{
1030 const struct element *elem;
1031 bool calc_crc = params->filter != 0;
1032 DECLARE_BITMAP(seen_elems, 256);
1033 u32 crc = params->crc;
1034
1035 bitmap_zero(seen_elems, 256);
1036
1037 for_each_element(elem, params->start, params->len) {
1038 const struct element *subelem;
1039 bool elem_parse_failed;
1040 u8 id = elem->id;
1041 u8 elen = elem->datalen;
1042 const u8 *pos = elem->data;
1043
1044 if (check_inherit &&
1045 !cfg80211_is_element_inherited(elem,
1046 check_inherit))
1047 continue;
1048
1049 switch (id) {
1050 case WLAN_EID_SSID:
1051 case WLAN_EID_SUPP_RATES:
1052 case WLAN_EID_FH_PARAMS:
1053 case WLAN_EID_DS_PARAMS:
1054 case WLAN_EID_CF_PARAMS:
1055 case WLAN_EID_TIM:
1056 case WLAN_EID_IBSS_PARAMS:
1057 case WLAN_EID_CHALLENGE:
1058 case WLAN_EID_RSN:
1059 case WLAN_EID_ERP_INFO:
1060 case WLAN_EID_EXT_SUPP_RATES:
1061 case WLAN_EID_HT_CAPABILITY:
1062 case WLAN_EID_HT_OPERATION:
1063 case WLAN_EID_VHT_CAPABILITY:
1064 case WLAN_EID_VHT_OPERATION:
1065 case WLAN_EID_MESH_ID:
1066 case WLAN_EID_MESH_CONFIG:
1067 case WLAN_EID_PEER_MGMT:
1068 case WLAN_EID_PREQ:
1069 case WLAN_EID_PREP:
1070 case WLAN_EID_PERR:
1071 case WLAN_EID_RANN:
1072 case WLAN_EID_CHANNEL_SWITCH:
1073 case WLAN_EID_EXT_CHANSWITCH_ANN:
1074 case WLAN_EID_COUNTRY:
1075 case WLAN_EID_PWR_CONSTRAINT:
1076 case WLAN_EID_TIMEOUT_INTERVAL:
1077 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1078 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1079 case WLAN_EID_CHAN_SWITCH_PARAM:
1080 case WLAN_EID_EXT_CAPABILITY:
1081 case WLAN_EID_CHAN_SWITCH_TIMING:
1082 case WLAN_EID_LINK_ID:
1083 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1084 case WLAN_EID_RSNX:
1085 case WLAN_EID_S1G_BCN_COMPAT:
1086 case WLAN_EID_S1G_CAPABILITIES:
1087 case WLAN_EID_S1G_OPERATION:
1088 case WLAN_EID_AID_RESPONSE:
1089 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1090 /*
1091 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1092 * that if the content gets bigger it might be needed more than once
1093 */
1094 if (test_bit(id, seen_elems)) {
1095 elems->parse_error = true;
1096 continue;
1097 }
1098 break;
1099 }
1100
1101 if (calc_crc && id < 64 && (params->filter & (1ULL << id)))
1102 crc = crc32_be(crc, pos - 2, elen + 2);
1103
1104 elem_parse_failed = false;
1105
1106 switch (id) {
1107 case WLAN_EID_LINK_ID:
1108 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1109 elem_parse_failed = true;
1110 break;
1111 }
1112 elems->lnk_id = (void *)(pos - 2);
1113 break;
1114 case WLAN_EID_CHAN_SWITCH_TIMING:
1115 if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1116 elem_parse_failed = true;
1117 break;
1118 }
1119 elems->ch_sw_timing = (void *)pos;
1120 break;
1121 case WLAN_EID_EXT_CAPABILITY:
1122 elems->ext_capab = pos;
1123 elems->ext_capab_len = elen;
1124 break;
1125 case WLAN_EID_SSID:
1126 elems->ssid = pos;
1127 elems->ssid_len = elen;
1128 break;
1129 case WLAN_EID_SUPP_RATES:
1130 elems->supp_rates = pos;
1131 elems->supp_rates_len = elen;
1132 break;
1133 case WLAN_EID_DS_PARAMS:
1134 if (elen >= 1)
1135 elems->ds_params = pos;
1136 else
1137 elem_parse_failed = true;
1138 break;
1139 case WLAN_EID_TIM:
1140 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1141 elems->tim = (void *)pos;
1142 elems->tim_len = elen;
1143 } else
1144 elem_parse_failed = true;
1145 break;
1146 case WLAN_EID_VENDOR_SPECIFIC:
1147 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1148 pos[2] == 0xf2) {
1149 /* Microsoft OUI (00:50:F2) */
1150
1151 if (calc_crc)
1152 crc = crc32_be(crc, pos - 2, elen + 2);
1153
1154 if (elen >= 5 && pos[3] == 2) {
1155 /* OUI Type 2 - WMM IE */
1156 if (pos[4] == 0) {
1157 elems->wmm_info = pos;
1158 elems->wmm_info_len = elen;
1159 } else if (pos[4] == 1) {
1160 elems->wmm_param = pos;
1161 elems->wmm_param_len = elen;
1162 }
1163 }
1164 }
1165 break;
1166 case WLAN_EID_RSN:
1167 elems->rsn = pos;
1168 elems->rsn_len = elen;
1169 break;
1170 case WLAN_EID_ERP_INFO:
1171 if (elen >= 1)
1172 elems->erp_info = pos;
1173 else
1174 elem_parse_failed = true;
1175 break;
1176 case WLAN_EID_EXT_SUPP_RATES:
1177 elems->ext_supp_rates = pos;
1178 elems->ext_supp_rates_len = elen;
1179 break;
1180 case WLAN_EID_HT_CAPABILITY:
1181 if (elen >= sizeof(struct ieee80211_ht_cap))
1182 elems->ht_cap_elem = (void *)pos;
1183 else
1184 elem_parse_failed = true;
1185 break;
1186 case WLAN_EID_HT_OPERATION:
1187 if (elen >= sizeof(struct ieee80211_ht_operation))
1188 elems->ht_operation = (void *)pos;
1189 else
1190 elem_parse_failed = true;
1191 break;
1192 case WLAN_EID_VHT_CAPABILITY:
1193 if (elen >= sizeof(struct ieee80211_vht_cap))
1194 elems->vht_cap_elem = (void *)pos;
1195 else
1196 elem_parse_failed = true;
1197 break;
1198 case WLAN_EID_VHT_OPERATION:
1199 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1200 elems->vht_operation = (void *)pos;
1201 if (calc_crc)
1202 crc = crc32_be(crc, pos - 2, elen + 2);
1203 break;
1204 }
1205 elem_parse_failed = true;
1206 break;
1207 case WLAN_EID_OPMODE_NOTIF:
1208 if (elen > 0) {
1209 elems->opmode_notif = pos;
1210 if (calc_crc)
1211 crc = crc32_be(crc, pos - 2, elen + 2);
1212 break;
1213 }
1214 elem_parse_failed = true;
1215 break;
1216 case WLAN_EID_MESH_ID:
1217 elems->mesh_id = pos;
1218 elems->mesh_id_len = elen;
1219 break;
1220 case WLAN_EID_MESH_CONFIG:
1221 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1222 elems->mesh_config = (void *)pos;
1223 else
1224 elem_parse_failed = true;
1225 break;
1226 case WLAN_EID_PEER_MGMT:
1227 elems->peering = pos;
1228 elems->peering_len = elen;
1229 break;
1230 case WLAN_EID_MESH_AWAKE_WINDOW:
1231 if (elen >= 2)
1232 elems->awake_window = (void *)pos;
1233 break;
1234 case WLAN_EID_PREQ:
1235 elems->preq = pos;
1236 elems->preq_len = elen;
1237 break;
1238 case WLAN_EID_PREP:
1239 elems->prep = pos;
1240 elems->prep_len = elen;
1241 break;
1242 case WLAN_EID_PERR:
1243 elems->perr = pos;
1244 elems->perr_len = elen;
1245 break;
1246 case WLAN_EID_RANN:
1247 if (elen >= sizeof(struct ieee80211_rann_ie))
1248 elems->rann = (void *)pos;
1249 else
1250 elem_parse_failed = true;
1251 break;
1252 case WLAN_EID_CHANNEL_SWITCH:
1253 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1254 elem_parse_failed = true;
1255 break;
1256 }
1257 elems->ch_switch_ie = (void *)pos;
1258 break;
1259 case WLAN_EID_EXT_CHANSWITCH_ANN:
1260 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1261 elem_parse_failed = true;
1262 break;
1263 }
1264 elems->ext_chansw_ie = (void *)pos;
1265 break;
1266 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1267 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1268 elem_parse_failed = true;
1269 break;
1270 }
1271 elems->sec_chan_offs = (void *)pos;
1272 break;
1273 case WLAN_EID_CHAN_SWITCH_PARAM:
1274 if (elen <
1275 sizeof(*elems->mesh_chansw_params_ie)) {
1276 elem_parse_failed = true;
1277 break;
1278 }
1279 elems->mesh_chansw_params_ie = (void *)pos;
1280 break;
1281 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1282 if (!params->action ||
1283 elen < sizeof(*elems->wide_bw_chansw_ie)) {
1284 elem_parse_failed = true;
1285 break;
1286 }
1287 elems->wide_bw_chansw_ie = (void *)pos;
1288 break;
1289 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1290 if (params->action) {
1291 elem_parse_failed = true;
1292 break;
1293 }
1294 /*
1295 * This is a bit tricky, but as we only care about
1296 * a few elements, parse them out manually.
1297 */
1298 subelem = cfg80211_find_elem(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1299 pos, elen);
1300 if (subelem) {
1301 if (subelem->datalen >= sizeof(*elems->wide_bw_chansw_ie))
1302 elems->wide_bw_chansw_ie =
1303 (void *)subelem->data;
1304 else
1305 elem_parse_failed = true;
1306 }
1307
1308 subelem = cfg80211_find_ext_elem(WLAN_EID_EXT_BANDWIDTH_INDICATION,
1309 pos, elen);
1310 if (subelem) {
1311 const void *edata = subelem->data + 1;
1312 u8 edatalen = subelem->datalen - 1;
1313
1314 if (ieee80211_bandwidth_indication_size_ok(edata,
1315 edatalen))
1316 elems->bandwidth_indication = edata;
1317 else
1318 elem_parse_failed = true;
1319 }
1320 break;
1321 case WLAN_EID_COUNTRY:
1322 elems->country_elem = pos;
1323 elems->country_elem_len = elen;
1324 break;
1325 case WLAN_EID_PWR_CONSTRAINT:
1326 if (elen != 1) {
1327 elem_parse_failed = true;
1328 break;
1329 }
1330 elems->pwr_constr_elem = pos;
1331 break;
1332 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1333 /* Lots of different options exist, but we only care
1334 * about the Dynamic Transmit Power Control element.
1335 * First check for the Cisco OUI, then for the DTPC
1336 * tag (0x00).
1337 */
1338 if (elen < 4) {
1339 elem_parse_failed = true;
1340 break;
1341 }
1342
1343 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1344 pos[2] != 0x96 || pos[3] != 0x00)
1345 break;
1346
1347 if (elen != 6) {
1348 elem_parse_failed = true;
1349 break;
1350 }
1351
1352 if (calc_crc)
1353 crc = crc32_be(crc, pos - 2, elen + 2);
1354
1355 elems->cisco_dtpc_elem = pos;
1356 break;
1357 case WLAN_EID_ADDBA_EXT:
1358 if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1359 elem_parse_failed = true;
1360 break;
1361 }
1362 elems->addba_ext_ie = (void *)pos;
1363 break;
1364 case WLAN_EID_TIMEOUT_INTERVAL:
1365 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1366 elems->timeout_int = (void *)pos;
1367 else
1368 elem_parse_failed = true;
1369 break;
1370 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1371 if (elen >= sizeof(*elems->max_idle_period_ie))
1372 elems->max_idle_period_ie = (void *)pos;
1373 break;
1374 case WLAN_EID_RSNX:
1375 elems->rsnx = pos;
1376 elems->rsnx_len = elen;
1377 break;
1378 case WLAN_EID_TX_POWER_ENVELOPE:
1379 if (elen < 1 ||
1380 elen > sizeof(struct ieee80211_tx_pwr_env))
1381 break;
1382
1383 if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env))
1384 break;
1385
1386 elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos;
1387 elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen;
1388 elems->tx_pwr_env_num++;
1389 break;
1390 case WLAN_EID_EXTENSION:
1391 ieee80211_parse_extension_element(calc_crc ?
1392 &crc : NULL,
1393 elem, elems, params);
1394 break;
1395 case WLAN_EID_S1G_CAPABILITIES:
1396 if (elen >= sizeof(*elems->s1g_capab))
1397 elems->s1g_capab = (void *)pos;
1398 else
1399 elem_parse_failed = true;
1400 break;
1401 case WLAN_EID_S1G_OPERATION:
1402 if (elen == sizeof(*elems->s1g_oper))
1403 elems->s1g_oper = (void *)pos;
1404 else
1405 elem_parse_failed = true;
1406 break;
1407 case WLAN_EID_S1G_BCN_COMPAT:
1408 if (elen == sizeof(*elems->s1g_bcn_compat))
1409 elems->s1g_bcn_compat = (void *)pos;
1410 else
1411 elem_parse_failed = true;
1412 break;
1413 case WLAN_EID_AID_RESPONSE:
1414 if (elen == sizeof(struct ieee80211_aid_response_ie))
1415 elems->aid_resp = (void *)pos;
1416 else
1417 elem_parse_failed = true;
1418 break;
1419 default:
1420 break;
1421 }
1422
1423 if (elem_parse_failed)
1424 elems->parse_error = true;
1425 else
1426 __set_bit(id, seen_elems);
1427 }
1428
1429 if (!for_each_element_completed(elem, params->start, params->len))
1430 elems->parse_error = true;
1431
1432 return crc;
1433}
1434
1435static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1436 struct ieee802_11_elems *elems,
1437 struct cfg80211_bss *bss,
1438 u8 *nontransmitted_profile)
1439{
1440 const struct element *elem, *sub;
1441 size_t profile_len = 0;
1442 bool found = false;
1443
1444 if (!bss || !bss->transmitted_bss)
1445 return profile_len;
1446
1447 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1448 if (elem->datalen < 2)
1449 continue;
1450 if (elem->data[0] < 1 || elem->data[0] > 8)
1451 continue;
1452
1453 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1454 u8 new_bssid[ETH_ALEN];
1455 const u8 *index;
1456
1457 if (sub->id != 0 || sub->datalen < 4) {
1458 /* not a valid BSS profile */
1459 continue;
1460 }
1461
1462 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1463 sub->data[1] != 2) {
1464 /* The first element of the
1465 * Nontransmitted BSSID Profile is not
1466 * the Nontransmitted BSSID Capability
1467 * element.
1468 */
1469 continue;
1470 }
1471
1472 memset(nontransmitted_profile, 0, len);
1473 profile_len = cfg80211_merge_profile(start, len,
1474 elem,
1475 sub,
1476 nontransmitted_profile,
1477 len);
1478
1479 /* found a Nontransmitted BSSID Profile */
1480 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1481 nontransmitted_profile,
1482 profile_len);
1483 if (!index || index[1] < 1 || index[2] == 0) {
1484 /* Invalid MBSSID Index element */
1485 continue;
1486 }
1487
1488 cfg80211_gen_new_bssid(bss->transmitted_bss->bssid,
1489 elem->data[0],
1490 index[2],
1491 new_bssid);
1492 if (ether_addr_equal(new_bssid, bss->bssid)) {
1493 found = true;
1494 elems->bssid_index_len = index[1];
1495 elems->bssid_index = (void *)&index[2];
1496 break;
1497 }
1498 }
1499 }
1500
1501 return found ? profile_len : 0;
1502}
1503
1504static void ieee80211_mle_get_sta_prof(struct ieee802_11_elems *elems,
1505 u8 link_id)
1506{
1507 const struct ieee80211_multi_link_elem *ml = elems->ml_basic;
1508 ssize_t ml_len = elems->ml_basic_len;
1509 const struct element *sub;
1510
1511 if (!ml || !ml_len)
1512 return;
1513
1514 if (le16_get_bits(ml->control, IEEE80211_ML_CONTROL_TYPE) !=
1515 IEEE80211_ML_CONTROL_TYPE_BASIC)
1516 return;
1517
1518 for_each_mle_subelement(sub, (u8 *)ml, ml_len) {
1519 struct ieee80211_mle_per_sta_profile *prof = (void *)sub->data;
1520 ssize_t sta_prof_len;
1521 u16 control;
1522
1523 if (sub->id != IEEE80211_MLE_SUBELEM_PER_STA_PROFILE)
1524 continue;
1525
1526 if (!ieee80211_mle_basic_sta_prof_size_ok(sub->data,
1527 sub->datalen))
1528 return;
1529
1530 control = le16_to_cpu(prof->control);
1531
1532 if (link_id != u16_get_bits(control,
1533 IEEE80211_MLE_STA_CONTROL_LINK_ID))
1534 continue;
1535
1536 if (!(control & IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE))
1537 return;
1538
1539 /* the sub element can be fragmented */
1540 sta_prof_len =
1541 cfg80211_defragment_element(sub,
1542 (u8 *)ml, ml_len,
1543 elems->scratch_pos,
1544 elems->scratch +
1545 elems->scratch_len -
1546 elems->scratch_pos,
1547 IEEE80211_MLE_SUBELEM_FRAGMENT);
1548
1549 if (sta_prof_len < 0)
1550 return;
1551
1552 elems->prof = (void *)elems->scratch_pos;
1553 elems->sta_prof_len = sta_prof_len;
1554 elems->scratch_pos += sta_prof_len;
1555
1556 return;
1557 }
1558}
1559
1560static void ieee80211_mle_parse_link(struct ieee802_11_elems *elems,
1561 struct ieee80211_elems_parse_params *params)
1562{
1563 struct ieee80211_mle_per_sta_profile *prof;
1564 struct ieee80211_elems_parse_params sub = {
1565 .action = params->action,
1566 .from_ap = params->from_ap,
1567 .link_id = -1,
1568 };
1569 ssize_t ml_len = elems->ml_basic_len;
1570 const struct element *non_inherit = NULL;
1571 const u8 *end;
1572
1573 if (params->link_id == -1)
1574 return;
1575
1576 ml_len = cfg80211_defragment_element(elems->ml_basic_elem,
1577 elems->ie_start,
1578 elems->total_len,
1579 elems->scratch_pos,
1580 elems->scratch +
1581 elems->scratch_len -
1582 elems->scratch_pos,
1583 WLAN_EID_FRAGMENT);
1584
1585 if (ml_len < 0)
1586 return;
1587
1588 elems->ml_basic = (const void *)elems->scratch_pos;
1589 elems->ml_basic_len = ml_len;
1590
1591 ieee80211_mle_get_sta_prof(elems, params->link_id);
1592 prof = elems->prof;
1593
1594 if (!prof)
1595 return;
1596
1597 /* check if we have the 4 bytes for the fixed part in assoc response */
1598 if (elems->sta_prof_len < sizeof(*prof) + prof->sta_info_len - 1 + 4) {
1599 elems->prof = NULL;
1600 elems->sta_prof_len = 0;
1601 return;
1602 }
1603
1604 /*
1605 * Skip the capability information and the status code that are expected
1606 * as part of the station profile in association response frames. Note
1607 * the -1 is because the 'sta_info_len' is accounted to as part of the
1608 * per-STA profile, but not part of the 'u8 variable[]' portion.
1609 */
1610 sub.start = prof->variable + prof->sta_info_len - 1 + 4;
1611 end = (const u8 *)prof + elems->sta_prof_len;
1612 sub.len = end - sub.start;
1613
1614 non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1615 sub.start, sub.len);
1616 _ieee802_11_parse_elems_full(&sub, elems, non_inherit);
1617}
1618
1619struct ieee802_11_elems *
1620ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params)
1621{
1622 struct ieee802_11_elems *elems;
1623 const struct element *non_inherit = NULL;
1624 u8 *nontransmitted_profile;
1625 int nontransmitted_profile_len = 0;
1626 size_t scratch_len = 3 * params->len;
1627
1628 elems = kzalloc(struct_size(elems, scratch, scratch_len), GFP_ATOMIC);
1629 if (!elems)
1630 return NULL;
1631 elems->ie_start = params->start;
1632 elems->total_len = params->len;
1633 elems->scratch_len = scratch_len;
1634 elems->scratch_pos = elems->scratch;
1635
1636 nontransmitted_profile = elems->scratch_pos;
1637 nontransmitted_profile_len =
1638 ieee802_11_find_bssid_profile(params->start, params->len,
1639 elems, params->bss,
1640 nontransmitted_profile);
1641 elems->scratch_pos += nontransmitted_profile_len;
1642 elems->scratch_len -= nontransmitted_profile_len;
1643 non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1644 nontransmitted_profile,
1645 nontransmitted_profile_len);
1646
1647 elems->crc = _ieee802_11_parse_elems_full(params, elems, non_inherit);
1648
1649 /* Override with nontransmitted profile, if found */
1650 if (nontransmitted_profile_len) {
1651 struct ieee80211_elems_parse_params sub = {
1652 .start = nontransmitted_profile,
1653 .len = nontransmitted_profile_len,
1654 .action = params->action,
1655 .link_id = params->link_id,
1656 };
1657
1658 _ieee802_11_parse_elems_full(&sub, elems, NULL);
1659 }
1660
1661 ieee80211_mle_parse_link(elems, params);
1662
1663 if (elems->tim && !elems->parse_error) {
1664 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1665
1666 elems->dtim_period = tim_ie->dtim_period;
1667 elems->dtim_count = tim_ie->dtim_count;
1668 }
1669
1670 /* Override DTIM period and count if needed */
1671 if (elems->bssid_index &&
1672 elems->bssid_index_len >=
1673 offsetofend(struct ieee80211_bssid_index, dtim_period))
1674 elems->dtim_period = elems->bssid_index->dtim_period;
1675
1676 if (elems->bssid_index &&
1677 elems->bssid_index_len >=
1678 offsetofend(struct ieee80211_bssid_index, dtim_count))
1679 elems->dtim_count = elems->bssid_index->dtim_count;
1680
1681 return elems;
1682}
1683EXPORT_SYMBOL_IF_KUNIT(ieee802_11_parse_elems_full);
1684
1685void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1686 struct ieee80211_tx_queue_params
1687 *qparam, int ac)
1688{
1689 struct ieee80211_chanctx_conf *chanctx_conf;
1690 const struct ieee80211_reg_rule *rrule;
1691 const struct ieee80211_wmm_ac *wmm_ac;
1692 u16 center_freq = 0;
1693
1694 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1695 sdata->vif.type != NL80211_IFTYPE_STATION)
1696 return;
1697
1698 rcu_read_lock();
1699 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1700 if (chanctx_conf)
1701 center_freq = chanctx_conf->def.chan->center_freq;
1702
1703 if (!center_freq) {
1704 rcu_read_unlock();
1705 return;
1706 }
1707
1708 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1709
1710 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1711 rcu_read_unlock();
1712 return;
1713 }
1714
1715 if (sdata->vif.type == NL80211_IFTYPE_AP)
1716 wmm_ac = &rrule->wmm_rule.ap[ac];
1717 else
1718 wmm_ac = &rrule->wmm_rule.client[ac];
1719 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1720 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1721 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1722 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1723 rcu_read_unlock();
1724}
1725
1726void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
1727 bool bss_notify, bool enable_qos)
1728{
1729 struct ieee80211_sub_if_data *sdata = link->sdata;
1730 struct ieee80211_local *local = sdata->local;
1731 struct ieee80211_tx_queue_params qparam;
1732 struct ieee80211_chanctx_conf *chanctx_conf;
1733 int ac;
1734 bool use_11b;
1735 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1736 int aCWmin, aCWmax;
1737
1738 if (!local->ops->conf_tx)
1739 return;
1740
1741 if (local->hw.queues < IEEE80211_NUM_ACS)
1742 return;
1743
1744 memset(&qparam, 0, sizeof(qparam));
1745
1746 rcu_read_lock();
1747 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1748 use_11b = (chanctx_conf &&
1749 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1750 !link->operating_11g_mode;
1751 rcu_read_unlock();
1752
1753 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1754
1755 /* Set defaults according to 802.11-2007 Table 7-37 */
1756 aCWmax = 1023;
1757 if (use_11b)
1758 aCWmin = 31;
1759 else
1760 aCWmin = 15;
1761
1762 /* Confiure old 802.11b/g medium access rules. */
1763 qparam.cw_max = aCWmax;
1764 qparam.cw_min = aCWmin;
1765 qparam.txop = 0;
1766 qparam.aifs = 2;
1767
1768 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1769 /* Update if QoS is enabled. */
1770 if (enable_qos) {
1771 switch (ac) {
1772 case IEEE80211_AC_BK:
1773 qparam.cw_max = aCWmax;
1774 qparam.cw_min = aCWmin;
1775 qparam.txop = 0;
1776 if (is_ocb)
1777 qparam.aifs = 9;
1778 else
1779 qparam.aifs = 7;
1780 break;
1781 /* never happens but let's not leave undefined */
1782 default:
1783 case IEEE80211_AC_BE:
1784 qparam.cw_max = aCWmax;
1785 qparam.cw_min = aCWmin;
1786 qparam.txop = 0;
1787 if (is_ocb)
1788 qparam.aifs = 6;
1789 else
1790 qparam.aifs = 3;
1791 break;
1792 case IEEE80211_AC_VI:
1793 qparam.cw_max = aCWmin;
1794 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1795 if (is_ocb)
1796 qparam.txop = 0;
1797 else if (use_11b)
1798 qparam.txop = 6016/32;
1799 else
1800 qparam.txop = 3008/32;
1801
1802 if (is_ocb)
1803 qparam.aifs = 3;
1804 else
1805 qparam.aifs = 2;
1806 break;
1807 case IEEE80211_AC_VO:
1808 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1809 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1810 if (is_ocb)
1811 qparam.txop = 0;
1812 else if (use_11b)
1813 qparam.txop = 3264/32;
1814 else
1815 qparam.txop = 1504/32;
1816 qparam.aifs = 2;
1817 break;
1818 }
1819 }
1820 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1821
1822 qparam.uapsd = false;
1823
1824 link->tx_conf[ac] = qparam;
1825 drv_conf_tx(local, link, ac, &qparam);
1826 }
1827
1828 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1829 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1830 sdata->vif.type != NL80211_IFTYPE_NAN) {
1831 link->conf->qos = enable_qos;
1832 if (bss_notify)
1833 ieee80211_link_info_change_notify(sdata, link,
1834 BSS_CHANGED_QOS);
1835 }
1836}
1837
1838void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1839 u16 transaction, u16 auth_alg, u16 status,
1840 const u8 *extra, size_t extra_len, const u8 *da,
1841 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1842 u32 tx_flags)
1843{
1844 struct ieee80211_local *local = sdata->local;
1845 struct sk_buff *skb;
1846 struct ieee80211_mgmt *mgmt;
1847 bool multi_link = ieee80211_vif_is_mld(&sdata->vif);
1848 struct {
1849 u8 id;
1850 u8 len;
1851 u8 ext_id;
1852 struct ieee80211_multi_link_elem ml;
1853 struct ieee80211_mle_basic_common_info basic;
1854 } __packed mle = {
1855 .id = WLAN_EID_EXTENSION,
1856 .len = sizeof(mle) - 2,
1857 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK,
1858 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC),
1859 .basic.len = sizeof(mle.basic),
1860 };
1861 int err;
1862
1863 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN);
1864
1865 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1866 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1867 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN +
1868 multi_link * sizeof(mle));
1869 if (!skb)
1870 return;
1871
1872 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1873
1874 mgmt = skb_put_zero(skb, 24 + 6);
1875 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1876 IEEE80211_STYPE_AUTH);
1877 memcpy(mgmt->da, da, ETH_ALEN);
1878 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1879 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1880 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1881 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1882 mgmt->u.auth.status_code = cpu_to_le16(status);
1883 if (extra)
1884 skb_put_data(skb, extra, extra_len);
1885 if (multi_link)
1886 skb_put_data(skb, &mle, sizeof(mle));
1887
1888 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1889 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1890 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1891 if (WARN_ON(err)) {
1892 kfree_skb(skb);
1893 return;
1894 }
1895 }
1896
1897 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1898 tx_flags;
1899 ieee80211_tx_skb(sdata, skb);
1900}
1901
1902void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1903 const u8 *da, const u8 *bssid,
1904 u16 stype, u16 reason,
1905 bool send_frame, u8 *frame_buf)
1906{
1907 struct ieee80211_local *local = sdata->local;
1908 struct sk_buff *skb;
1909 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1910
1911 /* build frame */
1912 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1913 mgmt->duration = 0; /* initialize only */
1914 mgmt->seq_ctrl = 0; /* initialize only */
1915 memcpy(mgmt->da, da, ETH_ALEN);
1916 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1917 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1918 /* u.deauth.reason_code == u.disassoc.reason_code */
1919 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1920
1921 if (send_frame) {
1922 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1923 IEEE80211_DEAUTH_FRAME_LEN);
1924 if (!skb)
1925 return;
1926
1927 skb_reserve(skb, local->hw.extra_tx_headroom);
1928
1929 /* copy in frame */
1930 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1931
1932 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1933 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1934 IEEE80211_SKB_CB(skb)->flags |=
1935 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1936
1937 ieee80211_tx_skb(sdata, skb);
1938 }
1939}
1940
1941u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1942{
1943 if ((end - pos) < 5)
1944 return pos;
1945
1946 *pos++ = WLAN_EID_EXTENSION;
1947 *pos++ = 1 + sizeof(cap);
1948 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1949 memcpy(pos, &cap, sizeof(cap));
1950
1951 return pos + 2;
1952}
1953
1954static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1955 u8 *buffer, size_t buffer_len,
1956 const u8 *ie, size_t ie_len,
1957 enum nl80211_band band,
1958 u32 rate_mask,
1959 struct cfg80211_chan_def *chandef,
1960 size_t *offset, u32 flags)
1961{
1962 struct ieee80211_local *local = sdata->local;
1963 struct ieee80211_supported_band *sband;
1964 const struct ieee80211_sta_he_cap *he_cap;
1965 const struct ieee80211_sta_eht_cap *eht_cap;
1966 u8 *pos = buffer, *end = buffer + buffer_len;
1967 size_t noffset;
1968 int supp_rates_len, i;
1969 u8 rates[32];
1970 int num_rates;
1971 int ext_rates_len;
1972 u32 rate_flags;
1973 bool have_80mhz = false;
1974
1975 *offset = 0;
1976
1977 sband = local->hw.wiphy->bands[band];
1978 if (WARN_ON_ONCE(!sband))
1979 return 0;
1980
1981 rate_flags = ieee80211_chandef_rate_flags(chandef);
1982
1983 /* For direct scan add S1G IE and consider its override bits */
1984 if (band == NL80211_BAND_S1GHZ) {
1985 if (end - pos < 2 + sizeof(struct ieee80211_s1g_cap))
1986 goto out_err;
1987 pos = ieee80211_ie_build_s1g_cap(pos, &sband->s1g_cap);
1988 goto done;
1989 }
1990
1991 num_rates = 0;
1992 for (i = 0; i < sband->n_bitrates; i++) {
1993 if ((BIT(i) & rate_mask) == 0)
1994 continue; /* skip rate */
1995 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1996 continue;
1997
1998 rates[num_rates++] =
1999 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, 5);
2000 }
2001
2002 supp_rates_len = min_t(int, num_rates, 8);
2003
2004 if (end - pos < 2 + supp_rates_len)
2005 goto out_err;
2006 *pos++ = WLAN_EID_SUPP_RATES;
2007 *pos++ = supp_rates_len;
2008 memcpy(pos, rates, supp_rates_len);
2009 pos += supp_rates_len;
2010
2011 /* insert "request information" if in custom IEs */
2012 if (ie && ie_len) {
2013 static const u8 before_extrates[] = {
2014 WLAN_EID_SSID,
2015 WLAN_EID_SUPP_RATES,
2016 WLAN_EID_REQUEST,
2017 };
2018 noffset = ieee80211_ie_split(ie, ie_len,
2019 before_extrates,
2020 ARRAY_SIZE(before_extrates),
2021 *offset);
2022 if (end - pos < noffset - *offset)
2023 goto out_err;
2024 memcpy(pos, ie + *offset, noffset - *offset);
2025 pos += noffset - *offset;
2026 *offset = noffset;
2027 }
2028
2029 ext_rates_len = num_rates - supp_rates_len;
2030 if (ext_rates_len > 0) {
2031 if (end - pos < 2 + ext_rates_len)
2032 goto out_err;
2033 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2034 *pos++ = ext_rates_len;
2035 memcpy(pos, rates + supp_rates_len, ext_rates_len);
2036 pos += ext_rates_len;
2037 }
2038
2039 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
2040 if (end - pos < 3)
2041 goto out_err;
2042 *pos++ = WLAN_EID_DS_PARAMS;
2043 *pos++ = 1;
2044 *pos++ = ieee80211_frequency_to_channel(
2045 chandef->chan->center_freq);
2046 }
2047
2048 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
2049 goto done;
2050
2051 /* insert custom IEs that go before HT */
2052 if (ie && ie_len) {
2053 static const u8 before_ht[] = {
2054 /*
2055 * no need to list the ones split off already
2056 * (or generated here)
2057 */
2058 WLAN_EID_DS_PARAMS,
2059 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
2060 };
2061 noffset = ieee80211_ie_split(ie, ie_len,
2062 before_ht, ARRAY_SIZE(before_ht),
2063 *offset);
2064 if (end - pos < noffset - *offset)
2065 goto out_err;
2066 memcpy(pos, ie + *offset, noffset - *offset);
2067 pos += noffset - *offset;
2068 *offset = noffset;
2069 }
2070
2071 if (sband->ht_cap.ht_supported) {
2072 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
2073 goto out_err;
2074 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
2075 sband->ht_cap.cap);
2076 }
2077
2078 /* insert custom IEs that go before VHT */
2079 if (ie && ie_len) {
2080 static const u8 before_vht[] = {
2081 /*
2082 * no need to list the ones split off already
2083 * (or generated here)
2084 */
2085 WLAN_EID_BSS_COEX_2040,
2086 WLAN_EID_EXT_CAPABILITY,
2087 WLAN_EID_SSID_LIST,
2088 WLAN_EID_CHANNEL_USAGE,
2089 WLAN_EID_INTERWORKING,
2090 WLAN_EID_MESH_ID,
2091 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
2092 };
2093 noffset = ieee80211_ie_split(ie, ie_len,
2094 before_vht, ARRAY_SIZE(before_vht),
2095 *offset);
2096 if (end - pos < noffset - *offset)
2097 goto out_err;
2098 memcpy(pos, ie + *offset, noffset - *offset);
2099 pos += noffset - *offset;
2100 *offset = noffset;
2101 }
2102
2103 /* Check if any channel in this sband supports at least 80 MHz */
2104 for (i = 0; i < sband->n_channels; i++) {
2105 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
2106 IEEE80211_CHAN_NO_80MHZ))
2107 continue;
2108
2109 have_80mhz = true;
2110 break;
2111 }
2112
2113 if (sband->vht_cap.vht_supported && have_80mhz) {
2114 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
2115 goto out_err;
2116 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
2117 sband->vht_cap.cap);
2118 }
2119
2120 /* insert custom IEs that go before HE */
2121 if (ie && ie_len) {
2122 static const u8 before_he[] = {
2123 /*
2124 * no need to list the ones split off before VHT
2125 * or generated here
2126 */
2127 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
2128 WLAN_EID_AP_CSN,
2129 /* TODO: add 11ah/11aj/11ak elements */
2130 };
2131 noffset = ieee80211_ie_split(ie, ie_len,
2132 before_he, ARRAY_SIZE(before_he),
2133 *offset);
2134 if (end - pos < noffset - *offset)
2135 goto out_err;
2136 memcpy(pos, ie + *offset, noffset - *offset);
2137 pos += noffset - *offset;
2138 *offset = noffset;
2139 }
2140
2141 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
2142 if (he_cap &&
2143 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2144 IEEE80211_CHAN_NO_HE)) {
2145 pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end);
2146 if (!pos)
2147 goto out_err;
2148 }
2149
2150 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif);
2151
2152 if (eht_cap &&
2153 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2154 IEEE80211_CHAN_NO_HE |
2155 IEEE80211_CHAN_NO_EHT)) {
2156 pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end,
2157 sdata->vif.type == NL80211_IFTYPE_AP);
2158 if (!pos)
2159 goto out_err;
2160 }
2161
2162 if (cfg80211_any_usable_channels(local->hw.wiphy,
2163 BIT(NL80211_BAND_6GHZ),
2164 IEEE80211_CHAN_NO_HE)) {
2165 struct ieee80211_supported_band *sband6;
2166
2167 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2168 he_cap = ieee80211_get_he_iftype_cap_vif(sband6, &sdata->vif);
2169
2170 if (he_cap) {
2171 enum nl80211_iftype iftype =
2172 ieee80211_vif_type_p2p(&sdata->vif);
2173 __le16 cap = ieee80211_get_he_6ghz_capa(sband6, iftype);
2174
2175 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
2176 }
2177 }
2178
2179 /*
2180 * If adding more here, adjust code in main.c
2181 * that calculates local->scan_ies_len.
2182 */
2183
2184 return pos - buffer;
2185 out_err:
2186 WARN_ONCE(1, "not enough space for preq IEs\n");
2187 done:
2188 return pos - buffer;
2189}
2190
2191int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2192 size_t buffer_len,
2193 struct ieee80211_scan_ies *ie_desc,
2194 const u8 *ie, size_t ie_len,
2195 u8 bands_used, u32 *rate_masks,
2196 struct cfg80211_chan_def *chandef,
2197 u32 flags)
2198{
2199 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
2200 int i;
2201
2202 memset(ie_desc, 0, sizeof(*ie_desc));
2203
2204 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2205 if (bands_used & BIT(i)) {
2206 pos += ieee80211_build_preq_ies_band(sdata,
2207 buffer + pos,
2208 buffer_len - pos,
2209 ie, ie_len, i,
2210 rate_masks[i],
2211 chandef,
2212 &custom_ie_offset,
2213 flags);
2214 ie_desc->ies[i] = buffer + old_pos;
2215 ie_desc->len[i] = pos - old_pos;
2216 old_pos = pos;
2217 }
2218 }
2219
2220 /* add any remaining custom IEs */
2221 if (ie && ie_len) {
2222 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2223 "not enough space for preq custom IEs\n"))
2224 return pos;
2225 memcpy(buffer + pos, ie + custom_ie_offset,
2226 ie_len - custom_ie_offset);
2227 ie_desc->common_ies = buffer + pos;
2228 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2229 pos += ie_len - custom_ie_offset;
2230 }
2231
2232 return pos;
2233};
2234
2235struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2236 const u8 *src, const u8 *dst,
2237 u32 ratemask,
2238 struct ieee80211_channel *chan,
2239 const u8 *ssid, size_t ssid_len,
2240 const u8 *ie, size_t ie_len,
2241 u32 flags)
2242{
2243 struct ieee80211_local *local = sdata->local;
2244 struct cfg80211_chan_def chandef;
2245 struct sk_buff *skb;
2246 struct ieee80211_mgmt *mgmt;
2247 int ies_len;
2248 u32 rate_masks[NUM_NL80211_BANDS] = {};
2249 struct ieee80211_scan_ies dummy_ie_desc;
2250
2251 /*
2252 * Do not send DS Channel parameter for directed probe requests
2253 * in order to maximize the chance that we get a response. Some
2254 * badly-behaved APs don't respond when this parameter is included.
2255 */
2256 chandef.width = sdata->vif.bss_conf.chandef.width;
2257 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2258 chandef.chan = NULL;
2259 else
2260 chandef.chan = chan;
2261
2262 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2263 local->scan_ies_len + ie_len);
2264 if (!skb)
2265 return NULL;
2266
2267 rate_masks[chan->band] = ratemask;
2268 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2269 skb_tailroom(skb), &dummy_ie_desc,
2270 ie, ie_len, BIT(chan->band),
2271 rate_masks, &chandef, flags);
2272 skb_put(skb, ies_len);
2273
2274 if (dst) {
2275 mgmt = (struct ieee80211_mgmt *) skb->data;
2276 memcpy(mgmt->da, dst, ETH_ALEN);
2277 memcpy(mgmt->bssid, dst, ETH_ALEN);
2278 }
2279
2280 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2281
2282 return skb;
2283}
2284
2285u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2286 struct ieee802_11_elems *elems,
2287 enum nl80211_band band, u32 *basic_rates)
2288{
2289 struct ieee80211_supported_band *sband;
2290 size_t num_rates;
2291 u32 supp_rates, rate_flags;
2292 int i, j;
2293
2294 sband = sdata->local->hw.wiphy->bands[band];
2295 if (WARN_ON(!sband))
2296 return 1;
2297
2298 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2299
2300 num_rates = sband->n_bitrates;
2301 supp_rates = 0;
2302 for (i = 0; i < elems->supp_rates_len +
2303 elems->ext_supp_rates_len; i++) {
2304 u8 rate = 0;
2305 int own_rate;
2306 bool is_basic;
2307 if (i < elems->supp_rates_len)
2308 rate = elems->supp_rates[i];
2309 else if (elems->ext_supp_rates)
2310 rate = elems->ext_supp_rates
2311 [i - elems->supp_rates_len];
2312 own_rate = 5 * (rate & 0x7f);
2313 is_basic = !!(rate & 0x80);
2314
2315 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2316 continue;
2317
2318 for (j = 0; j < num_rates; j++) {
2319 int brate;
2320 if ((rate_flags & sband->bitrates[j].flags)
2321 != rate_flags)
2322 continue;
2323
2324 brate = sband->bitrates[j].bitrate;
2325
2326 if (brate == own_rate) {
2327 supp_rates |= BIT(j);
2328 if (basic_rates && is_basic)
2329 *basic_rates |= BIT(j);
2330 }
2331 }
2332 }
2333 return supp_rates;
2334}
2335
2336void ieee80211_stop_device(struct ieee80211_local *local)
2337{
2338 ieee80211_led_radio(local, false);
2339 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2340
2341 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter);
2342
2343 flush_workqueue(local->workqueue);
2344 wiphy_work_flush(local->hw.wiphy, NULL);
2345 drv_stop(local);
2346}
2347
2348static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2349 bool aborted)
2350{
2351 /* It's possible that we don't handle the scan completion in
2352 * time during suspend, so if it's still marked as completed
2353 * here, queue the work and flush it to clean things up.
2354 * Instead of calling the worker function directly here, we
2355 * really queue it to avoid potential races with other flows
2356 * scheduling the same work.
2357 */
2358 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2359 /* If coming from reconfiguration failure, abort the scan so
2360 * we don't attempt to continue a partial HW scan - which is
2361 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2362 * completed scan, and a 5 GHz portion is still pending.
2363 */
2364 if (aborted)
2365 set_bit(SCAN_ABORTED, &local->scanning);
2366 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0);
2367 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work);
2368 }
2369}
2370
2371static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2372{
2373 struct ieee80211_sub_if_data *sdata;
2374 struct ieee80211_chanctx *ctx;
2375
2376 lockdep_assert_wiphy(local->hw.wiphy);
2377
2378 /*
2379 * We get here if during resume the device can't be restarted properly.
2380 * We might also get here if this happens during HW reset, which is a
2381 * slightly different situation and we need to drop all connections in
2382 * the latter case.
2383 *
2384 * Ask cfg80211 to turn off all interfaces, this will result in more
2385 * warnings but at least we'll then get into a clean stopped state.
2386 */
2387
2388 local->resuming = false;
2389 local->suspended = false;
2390 local->in_reconfig = false;
2391 local->reconfig_failure = true;
2392
2393 ieee80211_flush_completed_scan(local, true);
2394
2395 /* scheduled scan clearly can't be running any more, but tell
2396 * cfg80211 and clear local state
2397 */
2398 ieee80211_sched_scan_end(local);
2399
2400 list_for_each_entry(sdata, &local->interfaces, list)
2401 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2402
2403 /* Mark channel contexts as not being in the driver any more to avoid
2404 * removing them from the driver during the shutdown process...
2405 */
2406 list_for_each_entry(ctx, &local->chanctx_list, list)
2407 ctx->driver_present = false;
2408}
2409
2410static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2411 struct ieee80211_sub_if_data *sdata,
2412 struct ieee80211_link_data *link)
2413{
2414 struct ieee80211_chanctx_conf *conf;
2415 struct ieee80211_chanctx *ctx;
2416
2417 lockdep_assert_wiphy(local->hw.wiphy);
2418
2419 if (!local->use_chanctx)
2420 return;
2421
2422 conf = rcu_dereference_protected(link->conf->chanctx_conf,
2423 lockdep_is_held(&local->hw.wiphy->mtx));
2424 if (conf) {
2425 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2426 drv_assign_vif_chanctx(local, sdata, link->conf, ctx);
2427 }
2428}
2429
2430static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2431{
2432 struct ieee80211_local *local = sdata->local;
2433 struct sta_info *sta;
2434
2435 lockdep_assert_wiphy(local->hw.wiphy);
2436
2437 /* add STAs back */
2438 list_for_each_entry(sta, &local->sta_list, list) {
2439 enum ieee80211_sta_state state;
2440
2441 if (!sta->uploaded || sta->sdata != sdata)
2442 continue;
2443
2444 for (state = IEEE80211_STA_NOTEXIST;
2445 state < sta->sta_state; state++)
2446 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2447 state + 1));
2448 }
2449}
2450
2451static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2452{
2453 struct cfg80211_nan_func *func, **funcs;
2454 int res, id, i = 0;
2455
2456 res = drv_start_nan(sdata->local, sdata,
2457 &sdata->u.nan.conf);
2458 if (WARN_ON(res))
2459 return res;
2460
2461 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2462 sizeof(*funcs),
2463 GFP_KERNEL);
2464 if (!funcs)
2465 return -ENOMEM;
2466
2467 /* Add all the functions:
2468 * This is a little bit ugly. We need to call a potentially sleeping
2469 * callback for each NAN function, so we can't hold the spinlock.
2470 */
2471 spin_lock_bh(&sdata->u.nan.func_lock);
2472
2473 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2474 funcs[i++] = func;
2475
2476 spin_unlock_bh(&sdata->u.nan.func_lock);
2477
2478 for (i = 0; funcs[i]; i++) {
2479 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2480 if (WARN_ON(res))
2481 ieee80211_nan_func_terminated(&sdata->vif,
2482 funcs[i]->instance_id,
2483 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2484 GFP_KERNEL);
2485 }
2486
2487 kfree(funcs);
2488
2489 return 0;
2490}
2491
2492static void ieee80211_reconfig_ap_links(struct ieee80211_local *local,
2493 struct ieee80211_sub_if_data *sdata,
2494 u64 changed)
2495{
2496 int link_id;
2497
2498 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
2499 struct ieee80211_link_data *link;
2500
2501 if (!(sdata->vif.active_links & BIT(link_id)))
2502 continue;
2503
2504 link = sdata_dereference(sdata->link[link_id], sdata);
2505 if (!link)
2506 continue;
2507
2508 if (rcu_access_pointer(link->u.ap.beacon))
2509 drv_start_ap(local, sdata, link->conf);
2510
2511 if (!link->conf->enable_beacon)
2512 continue;
2513
2514 changed |= BSS_CHANGED_BEACON |
2515 BSS_CHANGED_BEACON_ENABLED;
2516
2517 ieee80211_link_info_change_notify(sdata, link, changed);
2518 }
2519}
2520
2521int ieee80211_reconfig(struct ieee80211_local *local)
2522{
2523 struct ieee80211_hw *hw = &local->hw;
2524 struct ieee80211_sub_if_data *sdata;
2525 struct ieee80211_chanctx *ctx;
2526 struct sta_info *sta;
2527 int res, i;
2528 bool reconfig_due_to_wowlan = false;
2529 struct ieee80211_sub_if_data *sched_scan_sdata;
2530 struct cfg80211_sched_scan_request *sched_scan_req;
2531 bool sched_scan_stopped = false;
2532 bool suspended = local->suspended;
2533 bool in_reconfig = false;
2534
2535 lockdep_assert_wiphy(local->hw.wiphy);
2536
2537 /* nothing to do if HW shouldn't run */
2538 if (!local->open_count)
2539 goto wake_up;
2540
2541#ifdef CONFIG_PM
2542 if (suspended)
2543 local->resuming = true;
2544
2545 if (local->wowlan) {
2546 /*
2547 * In the wowlan case, both mac80211 and the device
2548 * are functional when the resume op is called, so
2549 * clear local->suspended so the device could operate
2550 * normally (e.g. pass rx frames).
2551 */
2552 local->suspended = false;
2553 res = drv_resume(local);
2554 local->wowlan = false;
2555 if (res < 0) {
2556 local->resuming = false;
2557 return res;
2558 }
2559 if (res == 0)
2560 goto wake_up;
2561 WARN_ON(res > 1);
2562 /*
2563 * res is 1, which means the driver requested
2564 * to go through a regular reset on wakeup.
2565 * restore local->suspended in this case.
2566 */
2567 reconfig_due_to_wowlan = true;
2568 local->suspended = true;
2569 }
2570#endif
2571
2572 /*
2573 * In case of hw_restart during suspend (without wowlan),
2574 * cancel restart work, as we are reconfiguring the device
2575 * anyway.
2576 * Note that restart_work is scheduled on a frozen workqueue,
2577 * so we can't deadlock in this case.
2578 */
2579 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2580 cancel_work_sync(&local->restart_work);
2581
2582 local->started = false;
2583
2584 /*
2585 * Upon resume hardware can sometimes be goofy due to
2586 * various platform / driver / bus issues, so restarting
2587 * the device may at times not work immediately. Propagate
2588 * the error.
2589 */
2590 res = drv_start(local);
2591 if (res) {
2592 if (suspended)
2593 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2594 else
2595 WARN(1, "Hardware became unavailable during restart.\n");
2596 ieee80211_handle_reconfig_failure(local);
2597 return res;
2598 }
2599
2600 /* setup fragmentation threshold */
2601 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2602
2603 /* setup RTS threshold */
2604 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2605
2606 /* reset coverage class */
2607 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2608
2609 ieee80211_led_radio(local, true);
2610 ieee80211_mod_tpt_led_trig(local,
2611 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2612
2613 /* add interfaces */
2614 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
2615 if (sdata) {
2616 /* in HW restart it exists already */
2617 WARN_ON(local->resuming);
2618 res = drv_add_interface(local, sdata);
2619 if (WARN_ON(res)) {
2620 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2621 synchronize_net();
2622 kfree(sdata);
2623 }
2624 }
2625
2626 list_for_each_entry(sdata, &local->interfaces, list) {
2627 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2628 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2629 ieee80211_sdata_running(sdata)) {
2630 res = drv_add_interface(local, sdata);
2631 if (WARN_ON(res))
2632 break;
2633 }
2634 }
2635
2636 /* If adding any of the interfaces failed above, roll back and
2637 * report failure.
2638 */
2639 if (res) {
2640 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2641 list)
2642 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2643 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2644 ieee80211_sdata_running(sdata))
2645 drv_remove_interface(local, sdata);
2646 ieee80211_handle_reconfig_failure(local);
2647 return res;
2648 }
2649
2650 /* add channel contexts */
2651 if (local->use_chanctx) {
2652 list_for_each_entry(ctx, &local->chanctx_list, list)
2653 if (ctx->replace_state !=
2654 IEEE80211_CHANCTX_REPLACES_OTHER)
2655 WARN_ON(drv_add_chanctx(local, ctx));
2656
2657 sdata = wiphy_dereference(local->hw.wiphy,
2658 local->monitor_sdata);
2659 if (sdata && ieee80211_sdata_running(sdata))
2660 ieee80211_assign_chanctx(local, sdata, &sdata->deflink);
2661 }
2662
2663 /* reconfigure hardware */
2664 ieee80211_hw_config(local, ~0);
2665
2666 ieee80211_configure_filter(local);
2667
2668 /* Finally also reconfigure all the BSS information */
2669 list_for_each_entry(sdata, &local->interfaces, list) {
2670 /* common change flags for all interface types - link only */
2671 u64 changed = BSS_CHANGED_ERP_CTS_PROT |
2672 BSS_CHANGED_ERP_PREAMBLE |
2673 BSS_CHANGED_ERP_SLOT |
2674 BSS_CHANGED_HT |
2675 BSS_CHANGED_BASIC_RATES |
2676 BSS_CHANGED_BEACON_INT |
2677 BSS_CHANGED_BSSID |
2678 BSS_CHANGED_CQM |
2679 BSS_CHANGED_QOS |
2680 BSS_CHANGED_TXPOWER |
2681 BSS_CHANGED_MCAST_RATE;
2682 struct ieee80211_link_data *link = NULL;
2683 unsigned int link_id;
2684 u32 active_links = 0;
2685
2686 if (!ieee80211_sdata_running(sdata))
2687 continue;
2688
2689 if (ieee80211_vif_is_mld(&sdata->vif)) {
2690 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = {
2691 [0] = &sdata->vif.bss_conf,
2692 };
2693
2694 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
2695 /* start with a single active link */
2696 active_links = sdata->vif.active_links;
2697 link_id = ffs(active_links) - 1;
2698 sdata->vif.active_links = BIT(link_id);
2699 }
2700
2701 drv_change_vif_links(local, sdata, 0,
2702 sdata->vif.active_links,
2703 old);
2704 }
2705
2706 for (link_id = 0;
2707 link_id < ARRAY_SIZE(sdata->vif.link_conf);
2708 link_id++) {
2709 if (ieee80211_vif_is_mld(&sdata->vif) &&
2710 !(sdata->vif.active_links & BIT(link_id)))
2711 continue;
2712
2713 link = sdata_dereference(sdata->link[link_id], sdata);
2714 if (!link)
2715 continue;
2716
2717 ieee80211_assign_chanctx(local, sdata, link);
2718 }
2719
2720 switch (sdata->vif.type) {
2721 case NL80211_IFTYPE_AP_VLAN:
2722 case NL80211_IFTYPE_MONITOR:
2723 break;
2724 case NL80211_IFTYPE_ADHOC:
2725 if (sdata->vif.cfg.ibss_joined)
2726 WARN_ON(drv_join_ibss(local, sdata));
2727 fallthrough;
2728 default:
2729 ieee80211_reconfig_stations(sdata);
2730 fallthrough;
2731 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2732 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2733 drv_conf_tx(local, &sdata->deflink, i,
2734 &sdata->deflink.tx_conf[i]);
2735 break;
2736 }
2737
2738 if (sdata->vif.bss_conf.mu_mimo_owner)
2739 changed |= BSS_CHANGED_MU_GROUPS;
2740
2741 if (!ieee80211_vif_is_mld(&sdata->vif))
2742 changed |= BSS_CHANGED_IDLE;
2743
2744 switch (sdata->vif.type) {
2745 case NL80211_IFTYPE_STATION:
2746 if (!ieee80211_vif_is_mld(&sdata->vif)) {
2747 changed |= BSS_CHANGED_ASSOC |
2748 BSS_CHANGED_ARP_FILTER |
2749 BSS_CHANGED_PS;
2750
2751 /* Re-send beacon info report to the driver */
2752 if (sdata->deflink.u.mgd.have_beacon)
2753 changed |= BSS_CHANGED_BEACON_INFO;
2754
2755 if (sdata->vif.bss_conf.max_idle_period ||
2756 sdata->vif.bss_conf.protected_keep_alive)
2757 changed |= BSS_CHANGED_KEEP_ALIVE;
2758
2759 if (sdata->vif.bss_conf.eht_puncturing)
2760 changed |= BSS_CHANGED_EHT_PUNCTURING;
2761
2762 ieee80211_bss_info_change_notify(sdata,
2763 changed);
2764 } else if (!WARN_ON(!link)) {
2765 ieee80211_link_info_change_notify(sdata, link,
2766 changed);
2767 changed = BSS_CHANGED_ASSOC |
2768 BSS_CHANGED_IDLE |
2769 BSS_CHANGED_PS |
2770 BSS_CHANGED_ARP_FILTER;
2771 ieee80211_vif_cfg_change_notify(sdata, changed);
2772 }
2773 break;
2774 case NL80211_IFTYPE_OCB:
2775 changed |= BSS_CHANGED_OCB;
2776 ieee80211_bss_info_change_notify(sdata, changed);
2777 break;
2778 case NL80211_IFTYPE_ADHOC:
2779 changed |= BSS_CHANGED_IBSS;
2780 fallthrough;
2781 case NL80211_IFTYPE_AP:
2782 changed |= BSS_CHANGED_P2P_PS;
2783
2784 if (ieee80211_vif_is_mld(&sdata->vif))
2785 ieee80211_vif_cfg_change_notify(sdata,
2786 BSS_CHANGED_SSID);
2787 else
2788 changed |= BSS_CHANGED_SSID;
2789
2790 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2791 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2792 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2793 changed |= BSS_CHANGED_FTM_RESPONDER;
2794
2795 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2796 changed |= BSS_CHANGED_AP_PROBE_RESP;
2797
2798 if (ieee80211_vif_is_mld(&sdata->vif)) {
2799 ieee80211_reconfig_ap_links(local,
2800 sdata,
2801 changed);
2802 break;
2803 }
2804
2805 if (rcu_access_pointer(sdata->deflink.u.ap.beacon))
2806 drv_start_ap(local, sdata,
2807 sdata->deflink.conf);
2808 }
2809 fallthrough;
2810 case NL80211_IFTYPE_MESH_POINT:
2811 if (sdata->vif.bss_conf.enable_beacon) {
2812 changed |= BSS_CHANGED_BEACON |
2813 BSS_CHANGED_BEACON_ENABLED;
2814 ieee80211_bss_info_change_notify(sdata, changed);
2815 }
2816 break;
2817 case NL80211_IFTYPE_NAN:
2818 res = ieee80211_reconfig_nan(sdata);
2819 if (res < 0) {
2820 ieee80211_handle_reconfig_failure(local);
2821 return res;
2822 }
2823 break;
2824 case NL80211_IFTYPE_AP_VLAN:
2825 case NL80211_IFTYPE_MONITOR:
2826 case NL80211_IFTYPE_P2P_DEVICE:
2827 /* nothing to do */
2828 break;
2829 case NL80211_IFTYPE_UNSPECIFIED:
2830 case NUM_NL80211_IFTYPES:
2831 case NL80211_IFTYPE_P2P_CLIENT:
2832 case NL80211_IFTYPE_P2P_GO:
2833 case NL80211_IFTYPE_WDS:
2834 WARN_ON(1);
2835 break;
2836 }
2837
2838 if (active_links)
2839 ieee80211_set_active_links(&sdata->vif, active_links);
2840 }
2841
2842 ieee80211_recalc_ps(local);
2843
2844 /*
2845 * The sta might be in psm against the ap (e.g. because
2846 * this was the state before a hw restart), so we
2847 * explicitly send a null packet in order to make sure
2848 * it'll sync against the ap (and get out of psm).
2849 */
2850 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2851 list_for_each_entry(sdata, &local->interfaces, list) {
2852 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2853 continue;
2854 if (!sdata->u.mgd.associated)
2855 continue;
2856
2857 ieee80211_send_nullfunc(local, sdata, false);
2858 }
2859 }
2860
2861 /* APs are now beaconing, add back stations */
2862 list_for_each_entry(sdata, &local->interfaces, list) {
2863 if (!ieee80211_sdata_running(sdata))
2864 continue;
2865
2866 switch (sdata->vif.type) {
2867 case NL80211_IFTYPE_AP_VLAN:
2868 case NL80211_IFTYPE_AP:
2869 ieee80211_reconfig_stations(sdata);
2870 break;
2871 default:
2872 break;
2873 }
2874 }
2875
2876 /* add back keys */
2877 list_for_each_entry(sdata, &local->interfaces, list)
2878 ieee80211_reenable_keys(sdata);
2879
2880 /* Reconfigure sched scan if it was interrupted by FW restart */
2881 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2882 lockdep_is_held(&local->hw.wiphy->mtx));
2883 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2884 lockdep_is_held(&local->hw.wiphy->mtx));
2885 if (sched_scan_sdata && sched_scan_req)
2886 /*
2887 * Sched scan stopped, but we don't want to report it. Instead,
2888 * we're trying to reschedule. However, if more than one scan
2889 * plan was set, we cannot reschedule since we don't know which
2890 * scan plan was currently running (and some scan plans may have
2891 * already finished).
2892 */
2893 if (sched_scan_req->n_scan_plans > 1 ||
2894 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2895 sched_scan_req)) {
2896 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2897 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2898 sched_scan_stopped = true;
2899 }
2900
2901 if (sched_scan_stopped)
2902 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2903
2904 wake_up:
2905
2906 if (local->monitors == local->open_count && local->monitors > 0)
2907 ieee80211_add_virtual_monitor(local);
2908
2909 /*
2910 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2911 * sessions can be established after a resume.
2912 *
2913 * Also tear down aggregation sessions since reconfiguring
2914 * them in a hardware restart scenario is not easily done
2915 * right now, and the hardware will have lost information
2916 * about the sessions, but we and the AP still think they
2917 * are active. This is really a workaround though.
2918 */
2919 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2920 list_for_each_entry(sta, &local->sta_list, list) {
2921 if (!local->resuming)
2922 ieee80211_sta_tear_down_BA_sessions(
2923 sta, AGG_STOP_LOCAL_REQUEST);
2924 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2925 }
2926 }
2927
2928 /*
2929 * If this is for hw restart things are still running.
2930 * We may want to change that later, however.
2931 */
2932 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2933 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2934
2935 if (local->in_reconfig) {
2936 in_reconfig = local->in_reconfig;
2937 local->in_reconfig = false;
2938 barrier();
2939
2940 /* Restart deferred ROCs */
2941 ieee80211_start_next_roc(local);
2942
2943 /* Requeue all works */
2944 list_for_each_entry(sdata, &local->interfaces, list)
2945 wiphy_work_queue(local->hw.wiphy, &sdata->work);
2946 }
2947
2948 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2949 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2950 false);
2951
2952 if (in_reconfig) {
2953 list_for_each_entry(sdata, &local->interfaces, list) {
2954 if (!ieee80211_sdata_running(sdata))
2955 continue;
2956 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2957 ieee80211_sta_restart(sdata);
2958 }
2959 }
2960
2961 if (!suspended)
2962 return 0;
2963
2964#ifdef CONFIG_PM
2965 /* first set suspended false, then resuming */
2966 local->suspended = false;
2967 mb();
2968 local->resuming = false;
2969
2970 ieee80211_flush_completed_scan(local, false);
2971
2972 if (local->open_count && !reconfig_due_to_wowlan)
2973 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2974
2975 list_for_each_entry(sdata, &local->interfaces, list) {
2976 if (!ieee80211_sdata_running(sdata))
2977 continue;
2978 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2979 ieee80211_sta_restart(sdata);
2980 }
2981
2982 mod_timer(&local->sta_cleanup, jiffies + 1);
2983#else
2984 WARN_ON(1);
2985#endif
2986
2987 return 0;
2988}
2989
2990static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
2991{
2992 struct ieee80211_sub_if_data *sdata;
2993 struct ieee80211_local *local;
2994 struct ieee80211_key *key;
2995
2996 if (WARN_ON(!vif))
2997 return;
2998
2999 sdata = vif_to_sdata(vif);
3000 local = sdata->local;
3001
3002 lockdep_assert_wiphy(local->hw.wiphy);
3003
3004 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
3005 !local->resuming))
3006 return;
3007
3008 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
3009 !local->in_reconfig))
3010 return;
3011
3012 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
3013 return;
3014
3015 sdata->flags |= flag;
3016
3017 list_for_each_entry(key, &sdata->key_list, list)
3018 key->flags |= KEY_FLAG_TAINTED;
3019}
3020
3021void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
3022{
3023 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
3024}
3025EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
3026
3027void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
3028{
3029 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
3030}
3031EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
3032
3033void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
3034 struct ieee80211_link_data *link)
3035{
3036 struct ieee80211_local *local = sdata->local;
3037 struct ieee80211_chanctx_conf *chanctx_conf;
3038 struct ieee80211_chanctx *chanctx;
3039
3040 lockdep_assert_wiphy(local->hw.wiphy);
3041
3042 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf,
3043 lockdep_is_held(&local->hw.wiphy->mtx));
3044
3045 /*
3046 * This function can be called from a work, thus it may be possible
3047 * that the chanctx_conf is removed (due to a disconnection, for
3048 * example).
3049 * So nothing should be done in such case.
3050 */
3051 if (!chanctx_conf)
3052 return;
3053
3054 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3055 ieee80211_recalc_smps_chanctx(local, chanctx);
3056}
3057
3058void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
3059 int link_id)
3060{
3061 struct ieee80211_local *local = sdata->local;
3062 struct ieee80211_chanctx_conf *chanctx_conf;
3063 struct ieee80211_chanctx *chanctx;
3064 int i;
3065
3066 lockdep_assert_wiphy(local->hw.wiphy);
3067
3068 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) {
3069 struct ieee80211_bss_conf *bss_conf;
3070
3071 if (link_id >= 0 && link_id != i)
3072 continue;
3073
3074 rcu_read_lock();
3075 bss_conf = rcu_dereference(sdata->vif.link_conf[i]);
3076 if (!bss_conf) {
3077 rcu_read_unlock();
3078 continue;
3079 }
3080
3081 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf,
3082 lockdep_is_held(&local->hw.wiphy->mtx));
3083 /*
3084 * Since we hold the wiphy mutex (checked above)
3085 * we can take the chanctx_conf pointer out of the
3086 * RCU critical section, it cannot go away without
3087 * the mutex. Just the way we reached it could - in
3088 * theory - go away, but we don't really care and
3089 * it really shouldn't happen anyway.
3090 */
3091 rcu_read_unlock();
3092
3093 if (!chanctx_conf)
3094 return;
3095
3096 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx,
3097 conf);
3098 ieee80211_recalc_chanctx_min_def(local, chanctx, NULL);
3099 }
3100}
3101
3102size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
3103{
3104 size_t pos = offset;
3105
3106 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
3107 pos += 2 + ies[pos + 1];
3108
3109 return pos;
3110}
3111
3112u8 *ieee80211_ie_build_s1g_cap(u8 *pos, struct ieee80211_sta_s1g_cap *s1g_cap)
3113{
3114 *pos++ = WLAN_EID_S1G_CAPABILITIES;
3115 *pos++ = sizeof(struct ieee80211_s1g_cap);
3116 memset(pos, 0, sizeof(struct ieee80211_s1g_cap));
3117
3118 memcpy(pos, &s1g_cap->cap, sizeof(s1g_cap->cap));
3119 pos += sizeof(s1g_cap->cap);
3120
3121 memcpy(pos, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs));
3122 pos += sizeof(s1g_cap->nss_mcs);
3123
3124 return pos;
3125}
3126
3127u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3128 u16 cap)
3129{
3130 __le16 tmp;
3131
3132 *pos++ = WLAN_EID_HT_CAPABILITY;
3133 *pos++ = sizeof(struct ieee80211_ht_cap);
3134 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
3135
3136 /* capability flags */
3137 tmp = cpu_to_le16(cap);
3138 memcpy(pos, &tmp, sizeof(u16));
3139 pos += sizeof(u16);
3140
3141 /* AMPDU parameters */
3142 *pos++ = ht_cap->ampdu_factor |
3143 (ht_cap->ampdu_density <<
3144 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
3145
3146 /* MCS set */
3147 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
3148 pos += sizeof(ht_cap->mcs);
3149
3150 /* extended capabilities */
3151 pos += sizeof(__le16);
3152
3153 /* BF capabilities */
3154 pos += sizeof(__le32);
3155
3156 /* antenna selection */
3157 pos += sizeof(u8);
3158
3159 return pos;
3160}
3161
3162u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3163 u32 cap)
3164{
3165 __le32 tmp;
3166
3167 *pos++ = WLAN_EID_VHT_CAPABILITY;
3168 *pos++ = sizeof(struct ieee80211_vht_cap);
3169 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
3170
3171 /* capability flags */
3172 tmp = cpu_to_le32(cap);
3173 memcpy(pos, &tmp, sizeof(u32));
3174 pos += sizeof(u32);
3175
3176 /* VHT MCS set */
3177 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
3178 pos += sizeof(vht_cap->vht_mcs);
3179
3180 return pos;
3181}
3182
3183u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
3184{
3185 const struct ieee80211_sta_he_cap *he_cap;
3186 struct ieee80211_supported_band *sband;
3187 u8 n;
3188
3189 sband = ieee80211_get_sband(sdata);
3190 if (!sband)
3191 return 0;
3192
3193 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3194 if (!he_cap)
3195 return 0;
3196
3197 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
3198 return 2 + 1 +
3199 sizeof(he_cap->he_cap_elem) + n +
3200 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
3201 he_cap->he_cap_elem.phy_cap_info);
3202}
3203
3204u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
3205 const struct ieee80211_sta_he_cap *he_cap,
3206 u8 *end)
3207{
3208 struct ieee80211_he_cap_elem elem;
3209 u8 n;
3210 u8 ie_len;
3211 u8 *orig_pos = pos;
3212
3213 /* Make sure we have place for the IE */
3214 /*
3215 * TODO: the 1 added is because this temporarily is under the EXTENSION
3216 * IE. Get rid of it when it moves.
3217 */
3218 if (!he_cap)
3219 return orig_pos;
3220
3221 /* modify on stack first to calculate 'n' and 'ie_len' correctly */
3222 elem = he_cap->he_cap_elem;
3223
3224 if (disable_flags & IEEE80211_CONN_DISABLE_40MHZ)
3225 elem.phy_cap_info[0] &=
3226 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3227 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
3228
3229 if (disable_flags & IEEE80211_CONN_DISABLE_160MHZ)
3230 elem.phy_cap_info[0] &=
3231 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3232
3233 if (disable_flags & IEEE80211_CONN_DISABLE_80P80MHZ)
3234 elem.phy_cap_info[0] &=
3235 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3236
3237 n = ieee80211_he_mcs_nss_size(&elem);
3238 ie_len = 2 + 1 +
3239 sizeof(he_cap->he_cap_elem) + n +
3240 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
3241 he_cap->he_cap_elem.phy_cap_info);
3242
3243 if ((end - pos) < ie_len)
3244 return orig_pos;
3245
3246 *pos++ = WLAN_EID_EXTENSION;
3247 pos++; /* We'll set the size later below */
3248 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
3249
3250 /* Fixed data */
3251 memcpy(pos, &elem, sizeof(elem));
3252 pos += sizeof(elem);
3253
3254 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
3255 pos += n;
3256
3257 /* Check if PPE Threshold should be present */
3258 if ((he_cap->he_cap_elem.phy_cap_info[6] &
3259 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
3260 goto end;
3261
3262 /*
3263 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
3264 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
3265 */
3266 n = hweight8(he_cap->ppe_thres[0] &
3267 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
3268 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
3269 IEEE80211_PPE_THRES_NSS_POS));
3270
3271 /*
3272 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
3273 * total size.
3274 */
3275 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
3276 n = DIV_ROUND_UP(n, 8);
3277
3278 /* Copy PPE Thresholds */
3279 memcpy(pos, &he_cap->ppe_thres, n);
3280 pos += n;
3281
3282end:
3283 orig_pos[1] = (pos - orig_pos) - 2;
3284 return pos;
3285}
3286
3287void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
3288 enum ieee80211_smps_mode smps_mode,
3289 struct sk_buff *skb)
3290{
3291 struct ieee80211_supported_band *sband;
3292 const struct ieee80211_sband_iftype_data *iftd;
3293 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3294 u8 *pos;
3295 u16 cap;
3296
3297 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
3298 BIT(NL80211_BAND_6GHZ),
3299 IEEE80211_CHAN_NO_HE))
3300 return;
3301
3302 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3303
3304 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
3305 if (!iftd)
3306 return;
3307
3308 /* Check for device HE 6 GHz capability before adding element */
3309 if (!iftd->he_6ghz_capa.capa)
3310 return;
3311
3312 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
3313 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
3314
3315 switch (smps_mode) {
3316 case IEEE80211_SMPS_AUTOMATIC:
3317 case IEEE80211_SMPS_NUM_MODES:
3318 WARN_ON(1);
3319 fallthrough;
3320 case IEEE80211_SMPS_OFF:
3321 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
3322 IEEE80211_HE_6GHZ_CAP_SM_PS);
3323 break;
3324 case IEEE80211_SMPS_STATIC:
3325 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
3326 IEEE80211_HE_6GHZ_CAP_SM_PS);
3327 break;
3328 case IEEE80211_SMPS_DYNAMIC:
3329 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
3330 IEEE80211_HE_6GHZ_CAP_SM_PS);
3331 break;
3332 }
3333
3334 pos = skb_put(skb, 2 + 1 + sizeof(cap));
3335 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3336 pos + 2 + 1 + sizeof(cap));
3337}
3338
3339u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3340 const struct cfg80211_chan_def *chandef,
3341 u16 prot_mode, bool rifs_mode)
3342{
3343 struct ieee80211_ht_operation *ht_oper;
3344 /* Build HT Information */
3345 *pos++ = WLAN_EID_HT_OPERATION;
3346 *pos++ = sizeof(struct ieee80211_ht_operation);
3347 ht_oper = (struct ieee80211_ht_operation *)pos;
3348 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3349 chandef->chan->center_freq);
3350 switch (chandef->width) {
3351 case NL80211_CHAN_WIDTH_160:
3352 case NL80211_CHAN_WIDTH_80P80:
3353 case NL80211_CHAN_WIDTH_80:
3354 case NL80211_CHAN_WIDTH_40:
3355 if (chandef->center_freq1 > chandef->chan->center_freq)
3356 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3357 else
3358 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3359 break;
3360 case NL80211_CHAN_WIDTH_320:
3361 /* HT information element should not be included on 6GHz */
3362 WARN_ON(1);
3363 return pos;
3364 default:
3365 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3366 break;
3367 }
3368 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3369 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3370 chandef->width != NL80211_CHAN_WIDTH_20)
3371 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3372
3373 if (rifs_mode)
3374 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3375
3376 ht_oper->operation_mode = cpu_to_le16(prot_mode);
3377 ht_oper->stbc_param = 0x0000;
3378
3379 /* It seems that Basic MCS set and Supported MCS set
3380 are identical for the first 10 bytes */
3381 memset(&ht_oper->basic_set, 0, 16);
3382 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3383
3384 return pos + sizeof(struct ieee80211_ht_operation);
3385}
3386
3387void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3388 const struct cfg80211_chan_def *chandef)
3389{
3390 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3391 *pos++ = 3; /* IE length */
3392 /* New channel width */
3393 switch (chandef->width) {
3394 case NL80211_CHAN_WIDTH_80:
3395 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3396 break;
3397 case NL80211_CHAN_WIDTH_160:
3398 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3399 break;
3400 case NL80211_CHAN_WIDTH_80P80:
3401 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3402 break;
3403 case NL80211_CHAN_WIDTH_320:
3404 /* The behavior is not defined for 320 MHz channels */
3405 WARN_ON(1);
3406 fallthrough;
3407 default:
3408 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3409 }
3410
3411 /* new center frequency segment 0 */
3412 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3413 /* new center frequency segment 1 */
3414 if (chandef->center_freq2)
3415 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3416 else
3417 *pos++ = 0;
3418}
3419
3420u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3421 const struct cfg80211_chan_def *chandef)
3422{
3423 struct ieee80211_vht_operation *vht_oper;
3424
3425 *pos++ = WLAN_EID_VHT_OPERATION;
3426 *pos++ = sizeof(struct ieee80211_vht_operation);
3427 vht_oper = (struct ieee80211_vht_operation *)pos;
3428 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3429 chandef->center_freq1);
3430 if (chandef->center_freq2)
3431 vht_oper->center_freq_seg1_idx =
3432 ieee80211_frequency_to_channel(chandef->center_freq2);
3433 else
3434 vht_oper->center_freq_seg1_idx = 0x00;
3435
3436 switch (chandef->width) {
3437 case NL80211_CHAN_WIDTH_160:
3438 /*
3439 * Convert 160 MHz channel width to new style as interop
3440 * workaround.
3441 */
3442 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3443 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3444 if (chandef->chan->center_freq < chandef->center_freq1)
3445 vht_oper->center_freq_seg0_idx -= 8;
3446 else
3447 vht_oper->center_freq_seg0_idx += 8;
3448 break;
3449 case NL80211_CHAN_WIDTH_80P80:
3450 /*
3451 * Convert 80+80 MHz channel width to new style as interop
3452 * workaround.
3453 */
3454 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3455 break;
3456 case NL80211_CHAN_WIDTH_80:
3457 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3458 break;
3459 case NL80211_CHAN_WIDTH_320:
3460 /* VHT information element should not be included on 6GHz */
3461 WARN_ON(1);
3462 return pos;
3463 default:
3464 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3465 break;
3466 }
3467
3468 /* don't require special VHT peer rates */
3469 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3470
3471 return pos + sizeof(struct ieee80211_vht_operation);
3472}
3473
3474u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3475{
3476 struct ieee80211_he_operation *he_oper;
3477 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3478 u32 he_oper_params;
3479 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3480
3481 if (chandef->chan->band == NL80211_BAND_6GHZ)
3482 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3483
3484 *pos++ = WLAN_EID_EXTENSION;
3485 *pos++ = ie_len;
3486 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3487
3488 he_oper_params = 0;
3489 he_oper_params |= u32_encode_bits(1023, /* disabled */
3490 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3491 he_oper_params |= u32_encode_bits(1,
3492 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3493 he_oper_params |= u32_encode_bits(1,
3494 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3495 if (chandef->chan->band == NL80211_BAND_6GHZ)
3496 he_oper_params |= u32_encode_bits(1,
3497 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3498
3499 he_oper = (struct ieee80211_he_operation *)pos;
3500 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3501
3502 /* don't require special HE peer rates */
3503 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3504 pos += sizeof(struct ieee80211_he_operation);
3505
3506 if (chandef->chan->band != NL80211_BAND_6GHZ)
3507 goto out;
3508
3509 /* TODO add VHT operational */
3510 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3511 he_6ghz_op->minrate = 6; /* 6 Mbps */
3512 he_6ghz_op->primary =
3513 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3514 he_6ghz_op->ccfs0 =
3515 ieee80211_frequency_to_channel(chandef->center_freq1);
3516 if (chandef->center_freq2)
3517 he_6ghz_op->ccfs1 =
3518 ieee80211_frequency_to_channel(chandef->center_freq2);
3519 else
3520 he_6ghz_op->ccfs1 = 0;
3521
3522 switch (chandef->width) {
3523 case NL80211_CHAN_WIDTH_320:
3524 /*
3525 * TODO: mesh operation is not defined over 6GHz 320 MHz
3526 * channels.
3527 */
3528 WARN_ON(1);
3529 break;
3530 case NL80211_CHAN_WIDTH_160:
3531 /* Convert 160 MHz channel width to new style as interop
3532 * workaround.
3533 */
3534 he_6ghz_op->control =
3535 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3536 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3537 if (chandef->chan->center_freq < chandef->center_freq1)
3538 he_6ghz_op->ccfs0 -= 8;
3539 else
3540 he_6ghz_op->ccfs0 += 8;
3541 fallthrough;
3542 case NL80211_CHAN_WIDTH_80P80:
3543 he_6ghz_op->control =
3544 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3545 break;
3546 case NL80211_CHAN_WIDTH_80:
3547 he_6ghz_op->control =
3548 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3549 break;
3550 case NL80211_CHAN_WIDTH_40:
3551 he_6ghz_op->control =
3552 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3553 break;
3554 default:
3555 he_6ghz_op->control =
3556 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3557 break;
3558 }
3559
3560 pos += sizeof(struct ieee80211_he_6ghz_oper);
3561
3562out:
3563 return pos;
3564}
3565
3566u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef,
3567 const struct ieee80211_sta_eht_cap *eht_cap)
3568
3569{
3570 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss =
3571 &eht_cap->eht_mcs_nss_supp.only_20mhz;
3572 struct ieee80211_eht_operation *eht_oper;
3573 struct ieee80211_eht_operation_info *eht_oper_info;
3574 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional);
3575 u8 eht_oper_info_len =
3576 offsetof(struct ieee80211_eht_operation_info, optional);
3577 u8 chan_width = 0;
3578
3579 *pos++ = WLAN_EID_EXTENSION;
3580 *pos++ = 1 + eht_oper_len + eht_oper_info_len;
3581 *pos++ = WLAN_EID_EXT_EHT_OPERATION;
3582
3583 eht_oper = (struct ieee80211_eht_operation *)pos;
3584
3585 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss));
3586 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT;
3587 pos += eht_oper_len;
3588
3589 eht_oper_info =
3590 (struct ieee80211_eht_operation_info *)eht_oper->optional;
3591
3592 eht_oper_info->ccfs0 =
3593 ieee80211_frequency_to_channel(chandef->center_freq1);
3594 if (chandef->center_freq2)
3595 eht_oper_info->ccfs1 =
3596 ieee80211_frequency_to_channel(chandef->center_freq2);
3597 else
3598 eht_oper_info->ccfs1 = 0;
3599
3600 switch (chandef->width) {
3601 case NL80211_CHAN_WIDTH_320:
3602 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ;
3603 eht_oper_info->ccfs1 = eht_oper_info->ccfs0;
3604 if (chandef->chan->center_freq < chandef->center_freq1)
3605 eht_oper_info->ccfs0 -= 16;
3606 else
3607 eht_oper_info->ccfs0 += 16;
3608 break;
3609 case NL80211_CHAN_WIDTH_160:
3610 eht_oper_info->ccfs1 = eht_oper_info->ccfs0;
3611 if (chandef->chan->center_freq < chandef->center_freq1)
3612 eht_oper_info->ccfs0 -= 8;
3613 else
3614 eht_oper_info->ccfs0 += 8;
3615 fallthrough;
3616 case NL80211_CHAN_WIDTH_80P80:
3617 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ;
3618 break;
3619 case NL80211_CHAN_WIDTH_80:
3620 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ;
3621 break;
3622 case NL80211_CHAN_WIDTH_40:
3623 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ;
3624 break;
3625 default:
3626 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ;
3627 break;
3628 }
3629 eht_oper_info->control = chan_width;
3630 pos += eht_oper_info_len;
3631
3632 /* TODO: eht_oper_info->optional */
3633
3634 return pos;
3635}
3636
3637bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3638 struct cfg80211_chan_def *chandef)
3639{
3640 enum nl80211_channel_type channel_type;
3641
3642 if (!ht_oper)
3643 return false;
3644
3645 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3646 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3647 channel_type = NL80211_CHAN_HT20;
3648 break;
3649 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3650 channel_type = NL80211_CHAN_HT40PLUS;
3651 break;
3652 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3653 channel_type = NL80211_CHAN_HT40MINUS;
3654 break;
3655 default:
3656 return false;
3657 }
3658
3659 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3660 return true;
3661}
3662
3663bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3664 const struct ieee80211_vht_operation *oper,
3665 const struct ieee80211_ht_operation *htop,
3666 struct cfg80211_chan_def *chandef)
3667{
3668 struct cfg80211_chan_def new = *chandef;
3669 int cf0, cf1;
3670 int ccfs0, ccfs1, ccfs2;
3671 int ccf0, ccf1;
3672 u32 vht_cap;
3673 bool support_80_80 = false;
3674 bool support_160 = false;
3675 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3676 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3677 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3678 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3679
3680 if (!oper || !htop)
3681 return false;
3682
3683 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3684 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3685 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3686 support_80_80 = ((vht_cap &
3687 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3688 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3689 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3690 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3691 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3692 ccfs0 = oper->center_freq_seg0_idx;
3693 ccfs1 = oper->center_freq_seg1_idx;
3694 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3695 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3696 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3697
3698 ccf0 = ccfs0;
3699
3700 /* if not supported, parse as though we didn't understand it */
3701 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3702 ext_nss_bw_supp = 0;
3703
3704 /*
3705 * Cf. IEEE 802.11 Table 9-250
3706 *
3707 * We really just consider that because it's inefficient to connect
3708 * at a higher bandwidth than we'll actually be able to use.
3709 */
3710 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3711 default:
3712 case 0x00:
3713 ccf1 = 0;
3714 support_160 = false;
3715 support_80_80 = false;
3716 break;
3717 case 0x01:
3718 support_80_80 = false;
3719 fallthrough;
3720 case 0x02:
3721 case 0x03:
3722 ccf1 = ccfs2;
3723 break;
3724 case 0x10:
3725 ccf1 = ccfs1;
3726 break;
3727 case 0x11:
3728 case 0x12:
3729 if (!ccfs1)
3730 ccf1 = ccfs2;
3731 else
3732 ccf1 = ccfs1;
3733 break;
3734 case 0x13:
3735 case 0x20:
3736 case 0x23:
3737 ccf1 = ccfs1;
3738 break;
3739 }
3740
3741 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3742 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3743
3744 switch (oper->chan_width) {
3745 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3746 /* just use HT information directly */
3747 break;
3748 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3749 new.width = NL80211_CHAN_WIDTH_80;
3750 new.center_freq1 = cf0;
3751 /* If needed, adjust based on the newer interop workaround. */
3752 if (ccf1) {
3753 unsigned int diff;
3754
3755 diff = abs(ccf1 - ccf0);
3756 if ((diff == 8) && support_160) {
3757 new.width = NL80211_CHAN_WIDTH_160;
3758 new.center_freq1 = cf1;
3759 } else if ((diff > 8) && support_80_80) {
3760 new.width = NL80211_CHAN_WIDTH_80P80;
3761 new.center_freq2 = cf1;
3762 }
3763 }
3764 break;
3765 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3766 /* deprecated encoding */
3767 new.width = NL80211_CHAN_WIDTH_160;
3768 new.center_freq1 = cf0;
3769 break;
3770 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3771 /* deprecated encoding */
3772 new.width = NL80211_CHAN_WIDTH_80P80;
3773 new.center_freq1 = cf0;
3774 new.center_freq2 = cf1;
3775 break;
3776 default:
3777 return false;
3778 }
3779
3780 if (!cfg80211_chandef_valid(&new))
3781 return false;
3782
3783 *chandef = new;
3784 return true;
3785}
3786
3787void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info,
3788 bool support_160, bool support_320,
3789 struct cfg80211_chan_def *chandef)
3790{
3791 chandef->center_freq1 =
3792 ieee80211_channel_to_frequency(info->ccfs0,
3793 chandef->chan->band);
3794
3795 switch (u8_get_bits(info->control,
3796 IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3797 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3798 chandef->width = NL80211_CHAN_WIDTH_20;
3799 break;
3800 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3801 chandef->width = NL80211_CHAN_WIDTH_40;
3802 break;
3803 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3804 chandef->width = NL80211_CHAN_WIDTH_80;
3805 break;
3806 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
3807 if (support_160) {
3808 chandef->width = NL80211_CHAN_WIDTH_160;
3809 chandef->center_freq1 =
3810 ieee80211_channel_to_frequency(info->ccfs1,
3811 chandef->chan->band);
3812 } else {
3813 chandef->width = NL80211_CHAN_WIDTH_80;
3814 }
3815 break;
3816 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
3817 if (support_320) {
3818 chandef->width = NL80211_CHAN_WIDTH_320;
3819 chandef->center_freq1 =
3820 ieee80211_channel_to_frequency(info->ccfs1,
3821 chandef->chan->band);
3822 } else if (support_160) {
3823 chandef->width = NL80211_CHAN_WIDTH_160;
3824 } else {
3825 chandef->width = NL80211_CHAN_WIDTH_80;
3826
3827 if (chandef->center_freq1 > chandef->chan->center_freq)
3828 chandef->center_freq1 -= 40;
3829 else
3830 chandef->center_freq1 += 40;
3831 }
3832 break;
3833 }
3834}
3835
3836bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3837 const struct ieee80211_he_operation *he_oper,
3838 const struct ieee80211_eht_operation *eht_oper,
3839 struct cfg80211_chan_def *chandef)
3840{
3841 struct ieee80211_local *local = sdata->local;
3842 struct ieee80211_supported_band *sband;
3843 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3844 const struct ieee80211_sta_he_cap *he_cap;
3845 const struct ieee80211_sta_eht_cap *eht_cap;
3846 struct cfg80211_chan_def he_chandef = *chandef;
3847 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3848 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3849 bool support_80_80, support_160, support_320;
3850 u8 he_phy_cap, eht_phy_cap;
3851 u32 freq;
3852
3853 if (chandef->chan->band != NL80211_BAND_6GHZ)
3854 return true;
3855
3856 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3857
3858 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3859 if (!he_cap) {
3860 sdata_info(sdata, "Missing iftype sband data/HE cap");
3861 return false;
3862 }
3863
3864 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3865 support_160 =
3866 he_phy_cap &
3867 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3868 support_80_80 =
3869 he_phy_cap &
3870 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3871
3872 if (!he_oper) {
3873 sdata_info(sdata,
3874 "HE is not advertised on (on %d MHz), expect issues\n",
3875 chandef->chan->center_freq);
3876 return false;
3877 }
3878
3879 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
3880 if (!eht_cap)
3881 eht_oper = NULL;
3882
3883 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3884
3885 if (!he_6ghz_oper) {
3886 sdata_info(sdata,
3887 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3888 chandef->chan->center_freq);
3889 return false;
3890 }
3891
3892 /*
3893 * The EHT operation IE does not contain the primary channel so the
3894 * primary channel frequency should be taken from the 6 GHz operation
3895 * information.
3896 */
3897 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3898 NL80211_BAND_6GHZ);
3899 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3900
3901 switch (u8_get_bits(he_6ghz_oper->control,
3902 IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) {
3903 case IEEE80211_6GHZ_CTRL_REG_LPI_AP:
3904 bss_conf->power_type = IEEE80211_REG_LPI_AP;
3905 break;
3906 case IEEE80211_6GHZ_CTRL_REG_SP_AP:
3907 bss_conf->power_type = IEEE80211_REG_SP_AP;
3908 break;
3909 default:
3910 bss_conf->power_type = IEEE80211_REG_UNSET_AP;
3911 break;
3912 }
3913
3914 if (!eht_oper ||
3915 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) {
3916 switch (u8_get_bits(he_6ghz_oper->control,
3917 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3918 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3919 he_chandef.width = NL80211_CHAN_WIDTH_20;
3920 break;
3921 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3922 he_chandef.width = NL80211_CHAN_WIDTH_40;
3923 break;
3924 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3925 he_chandef.width = NL80211_CHAN_WIDTH_80;
3926 break;
3927 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3928 he_chandef.width = NL80211_CHAN_WIDTH_80;
3929 if (!he_6ghz_oper->ccfs1)
3930 break;
3931 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3932 if (support_160)
3933 he_chandef.width = NL80211_CHAN_WIDTH_160;
3934 } else {
3935 if (support_80_80)
3936 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3937 }
3938 break;
3939 }
3940
3941 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3942 he_chandef.center_freq1 =
3943 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3944 NL80211_BAND_6GHZ);
3945 } else {
3946 he_chandef.center_freq1 =
3947 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3948 NL80211_BAND_6GHZ);
3949 if (support_80_80 || support_160)
3950 he_chandef.center_freq2 =
3951 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3952 NL80211_BAND_6GHZ);
3953 }
3954 } else {
3955 eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0];
3956 support_320 =
3957 eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
3958
3959 ieee80211_chandef_eht_oper((const void *)eht_oper->optional,
3960 support_160, support_320,
3961 &he_chandef);
3962 }
3963
3964 if (!cfg80211_chandef_valid(&he_chandef)) {
3965 sdata_info(sdata,
3966 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3967 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3968 he_chandef.width,
3969 he_chandef.center_freq1,
3970 he_chandef.center_freq2);
3971 return false;
3972 }
3973
3974 *chandef = he_chandef;
3975
3976 return true;
3977}
3978
3979bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3980 struct cfg80211_chan_def *chandef)
3981{
3982 u32 oper_freq;
3983
3984 if (!oper)
3985 return false;
3986
3987 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3988 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3989 chandef->width = NL80211_CHAN_WIDTH_1;
3990 break;
3991 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3992 chandef->width = NL80211_CHAN_WIDTH_2;
3993 break;
3994 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3995 chandef->width = NL80211_CHAN_WIDTH_4;
3996 break;
3997 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3998 chandef->width = NL80211_CHAN_WIDTH_8;
3999 break;
4000 case IEEE80211_S1G_CHANWIDTH_16MHZ:
4001 chandef->width = NL80211_CHAN_WIDTH_16;
4002 break;
4003 default:
4004 return false;
4005 }
4006
4007 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
4008 NL80211_BAND_S1GHZ);
4009 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
4010 chandef->freq1_offset = oper_freq % 1000;
4011
4012 return true;
4013}
4014
4015int ieee80211_parse_bitrates(enum nl80211_chan_width width,
4016 const struct ieee80211_supported_band *sband,
4017 const u8 *srates, int srates_len, u32 *rates)
4018{
4019 u32 rate_flags = ieee80211_chanwidth_rate_flags(width);
4020 struct ieee80211_rate *br;
4021 int brate, rate, i, j, count = 0;
4022
4023 *rates = 0;
4024
4025 for (i = 0; i < srates_len; i++) {
4026 rate = srates[i] & 0x7f;
4027
4028 for (j = 0; j < sband->n_bitrates; j++) {
4029 br = &sband->bitrates[j];
4030 if ((rate_flags & br->flags) != rate_flags)
4031 continue;
4032
4033 brate = DIV_ROUND_UP(br->bitrate, 5);
4034 if (brate == rate) {
4035 *rates |= BIT(j);
4036 count++;
4037 break;
4038 }
4039 }
4040 }
4041 return count;
4042}
4043
4044int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
4045 struct sk_buff *skb, bool need_basic,
4046 enum nl80211_band band)
4047{
4048 struct ieee80211_local *local = sdata->local;
4049 struct ieee80211_supported_band *sband;
4050 int rate;
4051 u8 i, rates, *pos;
4052 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
4053 u32 rate_flags;
4054
4055 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
4056 sband = local->hw.wiphy->bands[band];
4057 rates = 0;
4058 for (i = 0; i < sband->n_bitrates; i++) {
4059 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
4060 continue;
4061 rates++;
4062 }
4063 if (rates > 8)
4064 rates = 8;
4065
4066 if (skb_tailroom(skb) < rates + 2)
4067 return -ENOMEM;
4068
4069 pos = skb_put(skb, rates + 2);
4070 *pos++ = WLAN_EID_SUPP_RATES;
4071 *pos++ = rates;
4072 for (i = 0; i < rates; i++) {
4073 u8 basic = 0;
4074 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
4075 continue;
4076
4077 if (need_basic && basic_rates & BIT(i))
4078 basic = 0x80;
4079 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5);
4080 *pos++ = basic | (u8) rate;
4081 }
4082
4083 return 0;
4084}
4085
4086int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
4087 struct sk_buff *skb, bool need_basic,
4088 enum nl80211_band band)
4089{
4090 struct ieee80211_local *local = sdata->local;
4091 struct ieee80211_supported_band *sband;
4092 int rate;
4093 u8 i, exrates, *pos;
4094 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
4095 u32 rate_flags;
4096
4097 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
4098
4099 sband = local->hw.wiphy->bands[band];
4100 exrates = 0;
4101 for (i = 0; i < sband->n_bitrates; i++) {
4102 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
4103 continue;
4104 exrates++;
4105 }
4106
4107 if (exrates > 8)
4108 exrates -= 8;
4109 else
4110 exrates = 0;
4111
4112 if (skb_tailroom(skb) < exrates + 2)
4113 return -ENOMEM;
4114
4115 if (exrates) {
4116 pos = skb_put(skb, exrates + 2);
4117 *pos++ = WLAN_EID_EXT_SUPP_RATES;
4118 *pos++ = exrates;
4119 for (i = 8; i < sband->n_bitrates; i++) {
4120 u8 basic = 0;
4121 if ((rate_flags & sband->bitrates[i].flags)
4122 != rate_flags)
4123 continue;
4124 if (need_basic && basic_rates & BIT(i))
4125 basic = 0x80;
4126 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5);
4127 *pos++ = basic | (u8) rate;
4128 }
4129 }
4130 return 0;
4131}
4132
4133int ieee80211_ave_rssi(struct ieee80211_vif *vif)
4134{
4135 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4136
4137 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
4138 return 0;
4139
4140 return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal);
4141}
4142EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
4143
4144u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
4145{
4146 if (!mcs)
4147 return 1;
4148
4149 /* TODO: consider rx_highest */
4150
4151 if (mcs->rx_mask[3])
4152 return 4;
4153 if (mcs->rx_mask[2])
4154 return 3;
4155 if (mcs->rx_mask[1])
4156 return 2;
4157 return 1;
4158}
4159
4160/**
4161 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
4162 * @local: mac80211 hw info struct
4163 * @status: RX status
4164 * @mpdu_len: total MPDU length (including FCS)
4165 * @mpdu_offset: offset into MPDU to calculate timestamp at
4166 *
4167 * This function calculates the RX timestamp at the given MPDU offset, taking
4168 * into account what the RX timestamp was. An offset of 0 will just normalize
4169 * the timestamp to TSF at beginning of MPDU reception.
4170 *
4171 * Returns: the calculated timestamp
4172 */
4173u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
4174 struct ieee80211_rx_status *status,
4175 unsigned int mpdu_len,
4176 unsigned int mpdu_offset)
4177{
4178 u64 ts = status->mactime;
4179 bool mactime_plcp_start;
4180 struct rate_info ri;
4181 u16 rate;
4182 u8 n_ltf;
4183
4184 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
4185 return 0;
4186
4187 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) ==
4188 RX_FLAG_MACTIME_PLCP_START;
4189
4190 memset(&ri, 0, sizeof(ri));
4191
4192 ri.bw = status->bw;
4193
4194 /* Fill cfg80211 rate info */
4195 switch (status->encoding) {
4196 case RX_ENC_EHT:
4197 ri.flags |= RATE_INFO_FLAGS_EHT_MCS;
4198 ri.mcs = status->rate_idx;
4199 ri.nss = status->nss;
4200 ri.eht_ru_alloc = status->eht.ru;
4201 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
4202 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
4203 /* TODO/FIXME: is this right? handle other PPDUs */
4204 if (mactime_plcp_start) {
4205 mpdu_offset += 2;
4206 ts += 36;
4207 }
4208 break;
4209 case RX_ENC_HE:
4210 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
4211 ri.mcs = status->rate_idx;
4212 ri.nss = status->nss;
4213 ri.he_ru_alloc = status->he_ru;
4214 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
4215 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
4216
4217 /*
4218 * See P802.11ax_D6.0, section 27.3.4 for
4219 * VHT PPDU format.
4220 */
4221 if (mactime_plcp_start) {
4222 mpdu_offset += 2;
4223 ts += 36;
4224
4225 /*
4226 * TODO:
4227 * For HE MU PPDU, add the HE-SIG-B.
4228 * For HE ER PPDU, add 8us for the HE-SIG-A.
4229 * For HE TB PPDU, add 4us for the HE-STF.
4230 * Add the HE-LTF durations - variable.
4231 */
4232 }
4233
4234 break;
4235 case RX_ENC_HT:
4236 ri.mcs = status->rate_idx;
4237 ri.flags |= RATE_INFO_FLAGS_MCS;
4238 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
4239 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
4240
4241 /*
4242 * See P802.11REVmd_D3.0, section 19.3.2 for
4243 * HT PPDU format.
4244 */
4245 if (mactime_plcp_start) {
4246 mpdu_offset += 2;
4247 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
4248 ts += 24;
4249 else
4250 ts += 32;
4251
4252 /*
4253 * Add Data HT-LTFs per streams
4254 * TODO: add Extension HT-LTFs, 4us per LTF
4255 */
4256 n_ltf = ((ri.mcs >> 3) & 3) + 1;
4257 n_ltf = n_ltf == 3 ? 4 : n_ltf;
4258 ts += n_ltf * 4;
4259 }
4260
4261 break;
4262 case RX_ENC_VHT:
4263 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
4264 ri.mcs = status->rate_idx;
4265 ri.nss = status->nss;
4266 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
4267 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
4268
4269 /*
4270 * See P802.11REVmd_D3.0, section 21.3.2 for
4271 * VHT PPDU format.
4272 */
4273 if (mactime_plcp_start) {
4274 mpdu_offset += 2;
4275 ts += 36;
4276
4277 /*
4278 * Add VHT-LTFs per streams
4279 */
4280 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
4281 ri.nss + 1 : ri.nss;
4282 ts += 4 * n_ltf;
4283 }
4284
4285 break;
4286 default:
4287 WARN_ON(1);
4288 fallthrough;
4289 case RX_ENC_LEGACY: {
4290 struct ieee80211_supported_band *sband;
4291
4292 sband = local->hw.wiphy->bands[status->band];
4293 ri.legacy = sband->bitrates[status->rate_idx].bitrate;
4294
4295 if (mactime_plcp_start) {
4296 if (status->band == NL80211_BAND_5GHZ) {
4297 ts += 20;
4298 mpdu_offset += 2;
4299 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
4300 ts += 96;
4301 } else {
4302 ts += 192;
4303 }
4304 }
4305 break;
4306 }
4307 }
4308
4309 rate = cfg80211_calculate_bitrate(&ri);
4310 if (WARN_ONCE(!rate,
4311 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
4312 (unsigned long long)status->flag, status->rate_idx,
4313 status->nss))
4314 return 0;
4315
4316 /* rewind from end of MPDU */
4317 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END)
4318 ts -= mpdu_len * 8 * 10 / rate;
4319
4320 ts += mpdu_offset * 8 * 10 / rate;
4321
4322 return ts;
4323}
4324
4325void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
4326{
4327 struct ieee80211_sub_if_data *sdata;
4328 struct cfg80211_chan_def chandef;
4329
4330 lockdep_assert_wiphy(local->hw.wiphy);
4331
4332 list_for_each_entry(sdata, &local->interfaces, list) {
4333 /* it might be waiting for the local->mtx, but then
4334 * by the time it gets it, sdata->wdev.cac_started
4335 * will no longer be true
4336 */
4337 wiphy_delayed_work_cancel(local->hw.wiphy,
4338 &sdata->deflink.dfs_cac_timer_work);
4339
4340 if (sdata->wdev.cac_started) {
4341 chandef = sdata->vif.bss_conf.chandef;
4342 ieee80211_link_release_channel(&sdata->deflink);
4343 cfg80211_cac_event(sdata->dev,
4344 &chandef,
4345 NL80211_RADAR_CAC_ABORTED,
4346 GFP_KERNEL);
4347 }
4348 }
4349}
4350
4351void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy,
4352 struct wiphy_work *work)
4353{
4354 struct ieee80211_local *local =
4355 container_of(work, struct ieee80211_local, radar_detected_work);
4356 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
4357 struct ieee80211_chanctx *ctx;
4358 int num_chanctx = 0;
4359
4360 lockdep_assert_wiphy(local->hw.wiphy);
4361
4362 list_for_each_entry(ctx, &local->chanctx_list, list) {
4363 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
4364 continue;
4365
4366 num_chanctx++;
4367 chandef = ctx->conf.def;
4368 }
4369
4370 ieee80211_dfs_cac_cancel(local);
4371
4372 if (num_chanctx > 1)
4373 /* XXX: multi-channel is not supported yet */
4374 WARN_ON(1);
4375 else
4376 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
4377}
4378
4379void ieee80211_radar_detected(struct ieee80211_hw *hw)
4380{
4381 struct ieee80211_local *local = hw_to_local(hw);
4382
4383 trace_api_radar_detected(local);
4384
4385 wiphy_work_queue(hw->wiphy, &local->radar_detected_work);
4386}
4387EXPORT_SYMBOL(ieee80211_radar_detected);
4388
4389ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
4390{
4391 ieee80211_conn_flags_t ret;
4392 int tmp;
4393
4394 switch (c->width) {
4395 case NL80211_CHAN_WIDTH_20:
4396 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4397 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4398 break;
4399 case NL80211_CHAN_WIDTH_40:
4400 c->width = NL80211_CHAN_WIDTH_20;
4401 c->center_freq1 = c->chan->center_freq;
4402 ret = IEEE80211_CONN_DISABLE_40MHZ |
4403 IEEE80211_CONN_DISABLE_VHT;
4404 break;
4405 case NL80211_CHAN_WIDTH_80:
4406 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
4407 /* n_P40 */
4408 tmp /= 2;
4409 /* freq_P40 */
4410 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
4411 c->width = NL80211_CHAN_WIDTH_40;
4412 ret = IEEE80211_CONN_DISABLE_VHT;
4413 break;
4414 case NL80211_CHAN_WIDTH_80P80:
4415 c->center_freq2 = 0;
4416 c->width = NL80211_CHAN_WIDTH_80;
4417 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4418 IEEE80211_CONN_DISABLE_160MHZ;
4419 break;
4420 case NL80211_CHAN_WIDTH_160:
4421 /* n_P20 */
4422 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
4423 /* n_P80 */
4424 tmp /= 4;
4425 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
4426 c->width = NL80211_CHAN_WIDTH_80;
4427 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4428 IEEE80211_CONN_DISABLE_160MHZ;
4429 break;
4430 case NL80211_CHAN_WIDTH_320:
4431 /* n_P20 */
4432 tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
4433 /* n_P160 */
4434 tmp /= 8;
4435 c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
4436 c->width = NL80211_CHAN_WIDTH_160;
4437 ret = IEEE80211_CONN_DISABLE_320MHZ;
4438 break;
4439 default:
4440 case NL80211_CHAN_WIDTH_20_NOHT:
4441 WARN_ON_ONCE(1);
4442 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4443 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4444 break;
4445 case NL80211_CHAN_WIDTH_1:
4446 case NL80211_CHAN_WIDTH_2:
4447 case NL80211_CHAN_WIDTH_4:
4448 case NL80211_CHAN_WIDTH_8:
4449 case NL80211_CHAN_WIDTH_16:
4450 case NL80211_CHAN_WIDTH_5:
4451 case NL80211_CHAN_WIDTH_10:
4452 WARN_ON_ONCE(1);
4453 /* keep c->width */
4454 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4455 break;
4456 }
4457
4458 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
4459
4460 return ret;
4461}
4462
4463/*
4464 * Returns true if smps_mode_new is strictly more restrictive than
4465 * smps_mode_old.
4466 */
4467bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
4468 enum ieee80211_smps_mode smps_mode_new)
4469{
4470 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
4471 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
4472 return false;
4473
4474 switch (smps_mode_old) {
4475 case IEEE80211_SMPS_STATIC:
4476 return false;
4477 case IEEE80211_SMPS_DYNAMIC:
4478 return smps_mode_new == IEEE80211_SMPS_STATIC;
4479 case IEEE80211_SMPS_OFF:
4480 return smps_mode_new != IEEE80211_SMPS_OFF;
4481 default:
4482 WARN_ON(1);
4483 }
4484
4485 return false;
4486}
4487
4488int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
4489 struct cfg80211_csa_settings *csa_settings)
4490{
4491 struct sk_buff *skb;
4492 struct ieee80211_mgmt *mgmt;
4493 struct ieee80211_local *local = sdata->local;
4494 int freq;
4495 int hdr_len = offsetofend(struct ieee80211_mgmt,
4496 u.action.u.chan_switch);
4497 u8 *pos;
4498
4499 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
4500 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
4501 return -EOPNOTSUPP;
4502
4503 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
4504 5 + /* channel switch announcement element */
4505 3 + /* secondary channel offset element */
4506 5 + /* wide bandwidth channel switch announcement */
4507 8); /* mesh channel switch parameters element */
4508 if (!skb)
4509 return -ENOMEM;
4510
4511 skb_reserve(skb, local->tx_headroom);
4512 mgmt = skb_put_zero(skb, hdr_len);
4513 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4514 IEEE80211_STYPE_ACTION);
4515
4516 eth_broadcast_addr(mgmt->da);
4517 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4518 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4519 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4520 } else {
4521 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4522 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4523 }
4524 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4525 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4526 pos = skb_put(skb, 5);
4527 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
4528 *pos++ = 3; /* IE length */
4529 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
4530 freq = csa_settings->chandef.chan->center_freq;
4531 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
4532 *pos++ = csa_settings->count; /* count */
4533
4534 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4535 enum nl80211_channel_type ch_type;
4536
4537 skb_put(skb, 3);
4538 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
4539 *pos++ = 1; /* IE length */
4540 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4541 if (ch_type == NL80211_CHAN_HT40PLUS)
4542 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4543 else
4544 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4545 }
4546
4547 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4548 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4549
4550 skb_put(skb, 8);
4551 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
4552 *pos++ = 6; /* IE length */
4553 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
4554 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
4555 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4556 *pos++ |= csa_settings->block_tx ?
4557 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4558 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4559 pos += 2;
4560 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4561 pos += 2;
4562 }
4563
4564 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4565 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4566 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4567 skb_put(skb, 5);
4568 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4569 }
4570
4571 ieee80211_tx_skb(sdata, skb);
4572 return 0;
4573}
4574
4575static bool
4576ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4577{
4578 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4579 int skip;
4580
4581 if (end > 0)
4582 return false;
4583
4584 /* One shot NOA */
4585 if (data->count[i] == 1)
4586 return false;
4587
4588 if (data->desc[i].interval == 0)
4589 return false;
4590
4591 /* End time is in the past, check for repetitions */
4592 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4593 if (data->count[i] < 255) {
4594 if (data->count[i] <= skip) {
4595 data->count[i] = 0;
4596 return false;
4597 }
4598
4599 data->count[i] -= skip;
4600 }
4601
4602 data->desc[i].start += skip * data->desc[i].interval;
4603
4604 return true;
4605}
4606
4607static bool
4608ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4609 s32 *offset)
4610{
4611 bool ret = false;
4612 int i;
4613
4614 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4615 s32 cur;
4616
4617 if (!data->count[i])
4618 continue;
4619
4620 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4621 ret = true;
4622
4623 cur = data->desc[i].start - tsf;
4624 if (cur > *offset)
4625 continue;
4626
4627 cur = data->desc[i].start + data->desc[i].duration - tsf;
4628 if (cur > *offset)
4629 *offset = cur;
4630 }
4631
4632 return ret;
4633}
4634
4635static u32
4636ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4637{
4638 s32 offset = 0;
4639 int tries = 0;
4640 /*
4641 * arbitrary limit, used to avoid infinite loops when combined NoA
4642 * descriptors cover the full time period.
4643 */
4644 int max_tries = 5;
4645
4646 ieee80211_extend_absent_time(data, tsf, &offset);
4647 do {
4648 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4649 break;
4650
4651 tries++;
4652 } while (tries < max_tries);
4653
4654 return offset;
4655}
4656
4657void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4658{
4659 u32 next_offset = BIT(31) - 1;
4660 int i;
4661
4662 data->absent = 0;
4663 data->has_next_tsf = false;
4664 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4665 s32 start;
4666
4667 if (!data->count[i])
4668 continue;
4669
4670 ieee80211_extend_noa_desc(data, tsf, i);
4671 start = data->desc[i].start - tsf;
4672 if (start <= 0)
4673 data->absent |= BIT(i);
4674
4675 if (next_offset > start)
4676 next_offset = start;
4677
4678 data->has_next_tsf = true;
4679 }
4680
4681 if (data->absent)
4682 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4683
4684 data->next_tsf = tsf + next_offset;
4685}
4686EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4687
4688int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4689 struct ieee80211_noa_data *data, u32 tsf)
4690{
4691 int ret = 0;
4692 int i;
4693
4694 memset(data, 0, sizeof(*data));
4695
4696 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4697 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4698
4699 if (!desc->count || !desc->duration)
4700 continue;
4701
4702 data->count[i] = desc->count;
4703 data->desc[i].start = le32_to_cpu(desc->start_time);
4704 data->desc[i].duration = le32_to_cpu(desc->duration);
4705 data->desc[i].interval = le32_to_cpu(desc->interval);
4706
4707 if (data->count[i] > 1 &&
4708 data->desc[i].interval < data->desc[i].duration)
4709 continue;
4710
4711 ieee80211_extend_noa_desc(data, tsf, i);
4712 ret++;
4713 }
4714
4715 if (ret)
4716 ieee80211_update_p2p_noa(data, tsf);
4717
4718 return ret;
4719}
4720EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4721
4722void ieee80211_recalc_dtim(struct ieee80211_local *local,
4723 struct ieee80211_sub_if_data *sdata)
4724{
4725 u64 tsf = drv_get_tsf(local, sdata);
4726 u64 dtim_count = 0;
4727 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4728 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4729 struct ps_data *ps;
4730 u8 bcns_from_dtim;
4731
4732 if (tsf == -1ULL || !beacon_int || !dtim_period)
4733 return;
4734
4735 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4736 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4737 if (!sdata->bss)
4738 return;
4739
4740 ps = &sdata->bss->ps;
4741 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4742 ps = &sdata->u.mesh.ps;
4743 } else {
4744 return;
4745 }
4746
4747 /*
4748 * actually finds last dtim_count, mac80211 will update in
4749 * __beacon_add_tim().
4750 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4751 */
4752 do_div(tsf, beacon_int);
4753 bcns_from_dtim = do_div(tsf, dtim_period);
4754 /* just had a DTIM */
4755 if (!bcns_from_dtim)
4756 dtim_count = 0;
4757 else
4758 dtim_count = dtim_period - bcns_from_dtim;
4759
4760 ps->dtim_count = dtim_count;
4761}
4762
4763static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4764 struct ieee80211_chanctx *ctx)
4765{
4766 struct ieee80211_link_data *link;
4767 u8 radar_detect = 0;
4768
4769 lockdep_assert_wiphy(local->hw.wiphy);
4770
4771 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4772 return 0;
4773
4774 list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list)
4775 if (link->reserved_radar_required)
4776 radar_detect |= BIT(link->reserved_chandef.width);
4777
4778 /*
4779 * An in-place reservation context should not have any assigned vifs
4780 * until it replaces the other context.
4781 */
4782 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4783 !list_empty(&ctx->assigned_links));
4784
4785 list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) {
4786 if (!link->radar_required)
4787 continue;
4788
4789 radar_detect |=
4790 BIT(link->conf->chandef.width);
4791 }
4792
4793 return radar_detect;
4794}
4795
4796int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4797 const struct cfg80211_chan_def *chandef,
4798 enum ieee80211_chanctx_mode chanmode,
4799 u8 radar_detect)
4800{
4801 struct ieee80211_local *local = sdata->local;
4802 struct ieee80211_sub_if_data *sdata_iter;
4803 enum nl80211_iftype iftype = sdata->wdev.iftype;
4804 struct ieee80211_chanctx *ctx;
4805 int total = 1;
4806 struct iface_combination_params params = {
4807 .radar_detect = radar_detect,
4808 };
4809
4810 lockdep_assert_wiphy(local->hw.wiphy);
4811
4812 if (WARN_ON(hweight32(radar_detect) > 1))
4813 return -EINVAL;
4814
4815 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4816 !chandef->chan))
4817 return -EINVAL;
4818
4819 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4820 return -EINVAL;
4821
4822 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4823 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4824 /*
4825 * always passing this is harmless, since it'll be the
4826 * same value that cfg80211 finds if it finds the same
4827 * interface ... and that's always allowed
4828 */
4829 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4830 }
4831
4832 /* Always allow software iftypes */
4833 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4834 if (radar_detect)
4835 return -EINVAL;
4836 return 0;
4837 }
4838
4839 if (chandef)
4840 params.num_different_channels = 1;
4841
4842 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4843 params.iftype_num[iftype] = 1;
4844
4845 list_for_each_entry(ctx, &local->chanctx_list, list) {
4846 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4847 continue;
4848 params.radar_detect |=
4849 ieee80211_chanctx_radar_detect(local, ctx);
4850 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4851 params.num_different_channels++;
4852 continue;
4853 }
4854 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4855 cfg80211_chandef_compatible(chandef,
4856 &ctx->conf.def))
4857 continue;
4858 params.num_different_channels++;
4859 }
4860
4861 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4862 struct wireless_dev *wdev_iter;
4863
4864 wdev_iter = &sdata_iter->wdev;
4865
4866 if (sdata_iter == sdata ||
4867 !ieee80211_sdata_running(sdata_iter) ||
4868 cfg80211_iftype_allowed(local->hw.wiphy,
4869 wdev_iter->iftype, 0, 1))
4870 continue;
4871
4872 params.iftype_num[wdev_iter->iftype]++;
4873 total++;
4874 }
4875
4876 if (total == 1 && !params.radar_detect)
4877 return 0;
4878
4879 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4880}
4881
4882static void
4883ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4884 void *data)
4885{
4886 u32 *max_num_different_channels = data;
4887
4888 *max_num_different_channels = max(*max_num_different_channels,
4889 c->num_different_channels);
4890}
4891
4892int ieee80211_max_num_channels(struct ieee80211_local *local)
4893{
4894 struct ieee80211_sub_if_data *sdata;
4895 struct ieee80211_chanctx *ctx;
4896 u32 max_num_different_channels = 1;
4897 int err;
4898 struct iface_combination_params params = {0};
4899
4900 lockdep_assert_wiphy(local->hw.wiphy);
4901
4902 list_for_each_entry(ctx, &local->chanctx_list, list) {
4903 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4904 continue;
4905
4906 params.num_different_channels++;
4907
4908 params.radar_detect |=
4909 ieee80211_chanctx_radar_detect(local, ctx);
4910 }
4911
4912 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4913 params.iftype_num[sdata->wdev.iftype]++;
4914
4915 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4916 ieee80211_iter_max_chans,
4917 &max_num_different_channels);
4918 if (err < 0)
4919 return err;
4920
4921 return max_num_different_channels;
4922}
4923
4924void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4925 struct ieee80211_sta_s1g_cap *caps,
4926 struct sk_buff *skb)
4927{
4928 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4929 struct ieee80211_s1g_cap s1g_capab;
4930 u8 *pos;
4931 int i;
4932
4933 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4934 return;
4935
4936 if (!caps->s1g)
4937 return;
4938
4939 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4940 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4941
4942 /* override the capability info */
4943 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4944 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4945
4946 s1g_capab.capab_info[i] &= ~mask;
4947 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4948 }
4949
4950 /* then MCS and NSS set */
4951 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4952 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4953
4954 s1g_capab.supp_mcs_nss[i] &= ~mask;
4955 s1g_capab.supp_mcs_nss[i] |=
4956 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4957 }
4958
4959 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4960 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4961 *pos++ = sizeof(s1g_capab);
4962
4963 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4964}
4965
4966void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4967 struct sk_buff *skb)
4968{
4969 u8 *pos = skb_put(skb, 3);
4970
4971 *pos++ = WLAN_EID_AID_REQUEST;
4972 *pos++ = 1;
4973 *pos++ = 0;
4974}
4975
4976u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4977{
4978 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4979 *buf++ = 7; /* len */
4980 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4981 *buf++ = 0x50;
4982 *buf++ = 0xf2;
4983 *buf++ = 2; /* WME */
4984 *buf++ = 0; /* WME info */
4985 *buf++ = 1; /* WME ver */
4986 *buf++ = qosinfo; /* U-APSD no in use */
4987
4988 return buf;
4989}
4990
4991void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4992 unsigned long *frame_cnt,
4993 unsigned long *byte_cnt)
4994{
4995 struct txq_info *txqi = to_txq_info(txq);
4996 u32 frag_cnt = 0, frag_bytes = 0;
4997 struct sk_buff *skb;
4998
4999 skb_queue_walk(&txqi->frags, skb) {
5000 frag_cnt++;
5001 frag_bytes += skb->len;
5002 }
5003
5004 if (frame_cnt)
5005 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
5006
5007 if (byte_cnt)
5008 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
5009}
5010EXPORT_SYMBOL(ieee80211_txq_get_depth);
5011
5012const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
5013 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
5014 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
5015 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
5016 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
5017};
5018
5019u16 ieee80211_encode_usf(int listen_interval)
5020{
5021 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
5022 u16 ui, usf = 0;
5023
5024 /* find greatest USF */
5025 while (usf < IEEE80211_MAX_USF) {
5026 if (listen_interval % listen_int_usf[usf + 1])
5027 break;
5028 usf += 1;
5029 }
5030 ui = listen_interval / listen_int_usf[usf];
5031
5032 /* error if there is a remainder. Should've been checked by user */
5033 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
5034 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
5035 FIELD_PREP(LISTEN_INT_UI, ui);
5036
5037 return (u16) listen_interval;
5038}
5039
5040u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
5041{
5042 const struct ieee80211_sta_he_cap *he_cap;
5043 const struct ieee80211_sta_eht_cap *eht_cap;
5044 struct ieee80211_supported_band *sband;
5045 bool is_ap;
5046 u8 n;
5047
5048 sband = ieee80211_get_sband(sdata);
5049 if (!sband)
5050 return 0;
5051
5052 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
5053 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
5054 if (!he_cap || !eht_cap)
5055 return 0;
5056
5057 is_ap = iftype == NL80211_IFTYPE_AP ||
5058 iftype == NL80211_IFTYPE_P2P_GO;
5059
5060 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
5061 &eht_cap->eht_cap_elem,
5062 is_ap);
5063 return 2 + 1 +
5064 sizeof(eht_cap->eht_cap_elem) + n +
5065 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
5066 eht_cap->eht_cap_elem.phy_cap_info);
5067 return 0;
5068}
5069
5070u8 *ieee80211_ie_build_eht_cap(u8 *pos,
5071 const struct ieee80211_sta_he_cap *he_cap,
5072 const struct ieee80211_sta_eht_cap *eht_cap,
5073 u8 *end,
5074 bool for_ap)
5075{
5076 u8 mcs_nss_len, ppet_len;
5077 u8 ie_len;
5078 u8 *orig_pos = pos;
5079
5080 /* Make sure we have place for the IE */
5081 if (!he_cap || !eht_cap)
5082 return orig_pos;
5083
5084 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
5085 &eht_cap->eht_cap_elem,
5086 for_ap);
5087 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
5088 eht_cap->eht_cap_elem.phy_cap_info);
5089
5090 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
5091 if ((end - pos) < ie_len)
5092 return orig_pos;
5093
5094 *pos++ = WLAN_EID_EXTENSION;
5095 *pos++ = ie_len - 2;
5096 *pos++ = WLAN_EID_EXT_EHT_CAPABILITY;
5097
5098 /* Fixed data */
5099 memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem));
5100 pos += sizeof(eht_cap->eht_cap_elem);
5101
5102 memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
5103 pos += mcs_nss_len;
5104
5105 if (ppet_len) {
5106 memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len);
5107 pos += ppet_len;
5108 }
5109
5110 return pos;
5111}