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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) 2018-2022 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->deflink.operating_11g_mode)
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->deflink.operating_11g_mode)
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->deflink.operating_11g_mode)
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 wake_tx_push_queue(struct ieee80211_local *local,
292 struct ieee80211_sub_if_data *sdata,
293 struct ieee80211_txq *queue)
294{
295 struct ieee80211_tx_control control = {
296 .sta = queue->sta,
297 };
298 struct sk_buff *skb;
299
300 while (1) {
301 skb = ieee80211_tx_dequeue(&local->hw, queue);
302 if (!skb)
303 break;
304
305 drv_tx(local, &control, skb);
306 }
307}
308
309/* wake_tx_queue handler for driver not implementing a custom one*/
310void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw,
311 struct ieee80211_txq *txq)
312{
313 struct ieee80211_local *local = hw_to_local(hw);
314 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif);
315 struct ieee80211_txq *queue;
316
317 /* Use ieee80211_next_txq() for airtime fairness accounting */
318 ieee80211_txq_schedule_start(hw, txq->ac);
319 while ((queue = ieee80211_next_txq(hw, txq->ac))) {
320 wake_tx_push_queue(local, sdata, queue);
321 ieee80211_return_txq(hw, queue, false);
322 }
323 ieee80211_txq_schedule_end(hw, txq->ac);
324}
325EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue);
326
327static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
328{
329 struct ieee80211_local *local = sdata->local;
330 struct ieee80211_vif *vif = &sdata->vif;
331 struct fq *fq = &local->fq;
332 struct ps_data *ps = NULL;
333 struct txq_info *txqi;
334 struct sta_info *sta;
335 int i;
336
337 local_bh_disable();
338 spin_lock(&fq->lock);
339
340 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state))
341 goto out;
342
343 if (sdata->vif.type == NL80211_IFTYPE_AP)
344 ps = &sdata->bss->ps;
345
346 list_for_each_entry_rcu(sta, &local->sta_list, list) {
347 if (sdata != sta->sdata)
348 continue;
349
350 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
351 struct ieee80211_txq *txq = sta->sta.txq[i];
352
353 if (!txq)
354 continue;
355
356 txqi = to_txq_info(txq);
357
358 if (ac != txq->ac)
359 continue;
360
361 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY,
362 &txqi->flags))
363 continue;
364
365 spin_unlock(&fq->lock);
366 drv_wake_tx_queue(local, txqi);
367 spin_lock(&fq->lock);
368 }
369 }
370
371 if (!vif->txq)
372 goto out;
373
374 txqi = to_txq_info(vif->txq);
375
376 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ||
377 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
378 goto out;
379
380 spin_unlock(&fq->lock);
381
382 drv_wake_tx_queue(local, txqi);
383 local_bh_enable();
384 return;
385out:
386 spin_unlock(&fq->lock);
387 local_bh_enable();
388}
389
390static void
391__releases(&local->queue_stop_reason_lock)
392__acquires(&local->queue_stop_reason_lock)
393_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
394{
395 struct ieee80211_sub_if_data *sdata;
396 int n_acs = IEEE80211_NUM_ACS;
397 int i;
398
399 rcu_read_lock();
400
401 if (local->hw.queues < IEEE80211_NUM_ACS)
402 n_acs = 1;
403
404 for (i = 0; i < local->hw.queues; i++) {
405 if (local->queue_stop_reasons[i])
406 continue;
407
408 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
409 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
410 int ac;
411
412 for (ac = 0; ac < n_acs; ac++) {
413 int ac_queue = sdata->vif.hw_queue[ac];
414
415 if (ac_queue == i ||
416 sdata->vif.cab_queue == i)
417 __ieee80211_wake_txqs(sdata, ac);
418 }
419 }
420 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
421 }
422
423 rcu_read_unlock();
424}
425
426void ieee80211_wake_txqs(struct tasklet_struct *t)
427{
428 struct ieee80211_local *local = from_tasklet(local, t,
429 wake_txqs_tasklet);
430 unsigned long flags;
431
432 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
433 _ieee80211_wake_txqs(local, &flags);
434 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
435}
436
437static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
438 enum queue_stop_reason reason,
439 bool refcounted,
440 unsigned long *flags)
441{
442 struct ieee80211_local *local = hw_to_local(hw);
443
444 trace_wake_queue(local, queue, reason);
445
446 if (WARN_ON(queue >= hw->queues))
447 return;
448
449 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
450 return;
451
452 if (!refcounted) {
453 local->q_stop_reasons[queue][reason] = 0;
454 } else {
455 local->q_stop_reasons[queue][reason]--;
456 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
457 local->q_stop_reasons[queue][reason] = 0;
458 }
459
460 if (local->q_stop_reasons[queue][reason] == 0)
461 __clear_bit(reason, &local->queue_stop_reasons[queue]);
462
463 if (local->queue_stop_reasons[queue] != 0)
464 /* someone still has this queue stopped */
465 return;
466
467 if (!skb_queue_empty(&local->pending[queue]))
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 (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
478 tasklet_schedule(&local->wake_txqs_tasklet);
479 else
480 _ieee80211_wake_txqs(local, flags);
481}
482
483void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
484 enum queue_stop_reason reason,
485 bool refcounted)
486{
487 struct ieee80211_local *local = hw_to_local(hw);
488 unsigned long flags;
489
490 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
491 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
492 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
493}
494
495void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
496{
497 ieee80211_wake_queue_by_reason(hw, queue,
498 IEEE80211_QUEUE_STOP_REASON_DRIVER,
499 false);
500}
501EXPORT_SYMBOL(ieee80211_wake_queue);
502
503static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
504 enum queue_stop_reason reason,
505 bool refcounted)
506{
507 struct ieee80211_local *local = hw_to_local(hw);
508
509 trace_stop_queue(local, queue, reason);
510
511 if (WARN_ON(queue >= hw->queues))
512 return;
513
514 if (!refcounted)
515 local->q_stop_reasons[queue][reason] = 1;
516 else
517 local->q_stop_reasons[queue][reason]++;
518
519 set_bit(reason, &local->queue_stop_reasons[queue]);
520}
521
522void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
523 enum queue_stop_reason reason,
524 bool refcounted)
525{
526 struct ieee80211_local *local = hw_to_local(hw);
527 unsigned long flags;
528
529 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
530 __ieee80211_stop_queue(hw, queue, reason, refcounted);
531 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
532}
533
534void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
535{
536 ieee80211_stop_queue_by_reason(hw, queue,
537 IEEE80211_QUEUE_STOP_REASON_DRIVER,
538 false);
539}
540EXPORT_SYMBOL(ieee80211_stop_queue);
541
542void ieee80211_add_pending_skb(struct ieee80211_local *local,
543 struct sk_buff *skb)
544{
545 struct ieee80211_hw *hw = &local->hw;
546 unsigned long flags;
547 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
548 int queue = info->hw_queue;
549
550 if (WARN_ON(!info->control.vif)) {
551 ieee80211_free_txskb(&local->hw, skb);
552 return;
553 }
554
555 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
556 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
557 false);
558 __skb_queue_tail(&local->pending[queue], skb);
559 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
560 false, &flags);
561 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
562}
563
564void ieee80211_add_pending_skbs(struct ieee80211_local *local,
565 struct sk_buff_head *skbs)
566{
567 struct ieee80211_hw *hw = &local->hw;
568 struct sk_buff *skb;
569 unsigned long flags;
570 int queue, i;
571
572 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
573 while ((skb = skb_dequeue(skbs))) {
574 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
575
576 if (WARN_ON(!info->control.vif)) {
577 ieee80211_free_txskb(&local->hw, skb);
578 continue;
579 }
580
581 queue = info->hw_queue;
582
583 __ieee80211_stop_queue(hw, queue,
584 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
585 false);
586
587 __skb_queue_tail(&local->pending[queue], skb);
588 }
589
590 for (i = 0; i < hw->queues; i++)
591 __ieee80211_wake_queue(hw, i,
592 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
593 false, &flags);
594 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
595}
596
597void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
598 unsigned long queues,
599 enum queue_stop_reason reason,
600 bool refcounted)
601{
602 struct ieee80211_local *local = hw_to_local(hw);
603 unsigned long flags;
604 int i;
605
606 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
607
608 for_each_set_bit(i, &queues, hw->queues)
609 __ieee80211_stop_queue(hw, i, reason, refcounted);
610
611 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
612}
613
614void ieee80211_stop_queues(struct ieee80211_hw *hw)
615{
616 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
617 IEEE80211_QUEUE_STOP_REASON_DRIVER,
618 false);
619}
620EXPORT_SYMBOL(ieee80211_stop_queues);
621
622int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
623{
624 struct ieee80211_local *local = hw_to_local(hw);
625 unsigned long flags;
626 int ret;
627
628 if (WARN_ON(queue >= hw->queues))
629 return true;
630
631 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
632 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
633 &local->queue_stop_reasons[queue]);
634 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
635 return ret;
636}
637EXPORT_SYMBOL(ieee80211_queue_stopped);
638
639void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
640 unsigned long queues,
641 enum queue_stop_reason reason,
642 bool refcounted)
643{
644 struct ieee80211_local *local = hw_to_local(hw);
645 unsigned long flags;
646 int i;
647
648 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
649
650 for_each_set_bit(i, &queues, hw->queues)
651 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
652
653 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
654}
655
656void ieee80211_wake_queues(struct ieee80211_hw *hw)
657{
658 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
659 IEEE80211_QUEUE_STOP_REASON_DRIVER,
660 false);
661}
662EXPORT_SYMBOL(ieee80211_wake_queues);
663
664static unsigned int
665ieee80211_get_vif_queues(struct ieee80211_local *local,
666 struct ieee80211_sub_if_data *sdata)
667{
668 unsigned int queues;
669
670 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
671 int ac;
672
673 queues = 0;
674
675 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
676 queues |= BIT(sdata->vif.hw_queue[ac]);
677 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
678 queues |= BIT(sdata->vif.cab_queue);
679 } else {
680 /* all queues */
681 queues = BIT(local->hw.queues) - 1;
682 }
683
684 return queues;
685}
686
687void __ieee80211_flush_queues(struct ieee80211_local *local,
688 struct ieee80211_sub_if_data *sdata,
689 unsigned int queues, bool drop)
690{
691 if (!local->ops->flush)
692 return;
693
694 /*
695 * If no queue was set, or if the HW doesn't support
696 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
697 */
698 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
699 queues = ieee80211_get_vif_queues(local, sdata);
700
701 ieee80211_stop_queues_by_reason(&local->hw, queues,
702 IEEE80211_QUEUE_STOP_REASON_FLUSH,
703 false);
704
705 drv_flush(local, sdata, queues, drop);
706
707 ieee80211_wake_queues_by_reason(&local->hw, queues,
708 IEEE80211_QUEUE_STOP_REASON_FLUSH,
709 false);
710}
711
712void ieee80211_flush_queues(struct ieee80211_local *local,
713 struct ieee80211_sub_if_data *sdata, bool drop)
714{
715 __ieee80211_flush_queues(local, sdata, 0, drop);
716}
717
718void ieee80211_stop_vif_queues(struct ieee80211_local *local,
719 struct ieee80211_sub_if_data *sdata,
720 enum queue_stop_reason reason)
721{
722 ieee80211_stop_queues_by_reason(&local->hw,
723 ieee80211_get_vif_queues(local, sdata),
724 reason, true);
725}
726
727void ieee80211_wake_vif_queues(struct ieee80211_local *local,
728 struct ieee80211_sub_if_data *sdata,
729 enum queue_stop_reason reason)
730{
731 ieee80211_wake_queues_by_reason(&local->hw,
732 ieee80211_get_vif_queues(local, sdata),
733 reason, true);
734}
735
736static void __iterate_interfaces(struct ieee80211_local *local,
737 u32 iter_flags,
738 void (*iterator)(void *data, u8 *mac,
739 struct ieee80211_vif *vif),
740 void *data)
741{
742 struct ieee80211_sub_if_data *sdata;
743 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
744
745 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
746 switch (sdata->vif.type) {
747 case NL80211_IFTYPE_MONITOR:
748 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
749 continue;
750 break;
751 case NL80211_IFTYPE_AP_VLAN:
752 continue;
753 default:
754 break;
755 }
756 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
757 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
758 continue;
759 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
760 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
761 continue;
762 if (ieee80211_sdata_running(sdata) || !active_only)
763 iterator(data, sdata->vif.addr,
764 &sdata->vif);
765 }
766
767 sdata = rcu_dereference_check(local->monitor_sdata,
768 lockdep_is_held(&local->iflist_mtx) ||
769 lockdep_is_held(&local->hw.wiphy->mtx));
770 if (sdata &&
771 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
772 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
773 iterator(data, sdata->vif.addr, &sdata->vif);
774}
775
776void ieee80211_iterate_interfaces(
777 struct ieee80211_hw *hw, u32 iter_flags,
778 void (*iterator)(void *data, u8 *mac,
779 struct ieee80211_vif *vif),
780 void *data)
781{
782 struct ieee80211_local *local = hw_to_local(hw);
783
784 mutex_lock(&local->iflist_mtx);
785 __iterate_interfaces(local, iter_flags, iterator, data);
786 mutex_unlock(&local->iflist_mtx);
787}
788EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
789
790void ieee80211_iterate_active_interfaces_atomic(
791 struct ieee80211_hw *hw, u32 iter_flags,
792 void (*iterator)(void *data, u8 *mac,
793 struct ieee80211_vif *vif),
794 void *data)
795{
796 struct ieee80211_local *local = hw_to_local(hw);
797
798 rcu_read_lock();
799 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
800 iterator, data);
801 rcu_read_unlock();
802}
803EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
804
805void ieee80211_iterate_active_interfaces_mtx(
806 struct ieee80211_hw *hw, u32 iter_flags,
807 void (*iterator)(void *data, u8 *mac,
808 struct ieee80211_vif *vif),
809 void *data)
810{
811 struct ieee80211_local *local = hw_to_local(hw);
812
813 lockdep_assert_wiphy(hw->wiphy);
814
815 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
816 iterator, data);
817}
818EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
819
820static void __iterate_stations(struct ieee80211_local *local,
821 void (*iterator)(void *data,
822 struct ieee80211_sta *sta),
823 void *data)
824{
825 struct sta_info *sta;
826
827 list_for_each_entry_rcu(sta, &local->sta_list, list) {
828 if (!sta->uploaded)
829 continue;
830
831 iterator(data, &sta->sta);
832 }
833}
834
835void ieee80211_iterate_stations(struct ieee80211_hw *hw,
836 void (*iterator)(void *data,
837 struct ieee80211_sta *sta),
838 void *data)
839{
840 struct ieee80211_local *local = hw_to_local(hw);
841
842 mutex_lock(&local->sta_mtx);
843 __iterate_stations(local, iterator, data);
844 mutex_unlock(&local->sta_mtx);
845}
846EXPORT_SYMBOL_GPL(ieee80211_iterate_stations);
847
848void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
849 void (*iterator)(void *data,
850 struct ieee80211_sta *sta),
851 void *data)
852{
853 struct ieee80211_local *local = hw_to_local(hw);
854
855 rcu_read_lock();
856 __iterate_stations(local, iterator, data);
857 rcu_read_unlock();
858}
859EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
860
861struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
862{
863 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
864
865 if (!ieee80211_sdata_running(sdata) ||
866 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
867 return NULL;
868 return &sdata->vif;
869}
870EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
871
872struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
873{
874 if (!vif)
875 return NULL;
876
877 return &vif_to_sdata(vif)->wdev;
878}
879EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
880
881/*
882 * Nothing should have been stuffed into the workqueue during
883 * the suspend->resume cycle. Since we can't check each caller
884 * of this function if we are already quiescing / suspended,
885 * check here and don't WARN since this can actually happen when
886 * the rx path (for example) is racing against __ieee80211_suspend
887 * and suspending / quiescing was set after the rx path checked
888 * them.
889 */
890static bool ieee80211_can_queue_work(struct ieee80211_local *local)
891{
892 if (local->quiescing || (local->suspended && !local->resuming)) {
893 pr_warn("queueing ieee80211 work while going to suspend\n");
894 return false;
895 }
896
897 return true;
898}
899
900void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
901{
902 struct ieee80211_local *local = hw_to_local(hw);
903
904 if (!ieee80211_can_queue_work(local))
905 return;
906
907 queue_work(local->workqueue, work);
908}
909EXPORT_SYMBOL(ieee80211_queue_work);
910
911void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
912 struct delayed_work *dwork,
913 unsigned long delay)
914{
915 struct ieee80211_local *local = hw_to_local(hw);
916
917 if (!ieee80211_can_queue_work(local))
918 return;
919
920 queue_delayed_work(local->workqueue, dwork, delay);
921}
922EXPORT_SYMBOL(ieee80211_queue_delayed_work);
923
924static void
925ieee80211_parse_extension_element(u32 *crc,
926 const struct element *elem,
927 struct ieee802_11_elems *elems,
928 struct ieee80211_elems_parse_params *params)
929{
930 const void *data = elem->data + 1;
931 u8 len;
932
933 if (!elem->datalen)
934 return;
935
936 len = elem->datalen - 1;
937
938 switch (elem->data[0]) {
939 case WLAN_EID_EXT_HE_MU_EDCA:
940 if (len >= sizeof(*elems->mu_edca_param_set)) {
941 elems->mu_edca_param_set = data;
942 if (crc)
943 *crc = crc32_be(*crc, (void *)elem,
944 elem->datalen + 2);
945 }
946 break;
947 case WLAN_EID_EXT_HE_CAPABILITY:
948 if (ieee80211_he_capa_size_ok(data, len)) {
949 elems->he_cap = data;
950 elems->he_cap_len = len;
951 }
952 break;
953 case WLAN_EID_EXT_HE_OPERATION:
954 if (len >= sizeof(*elems->he_operation) &&
955 len >= ieee80211_he_oper_size(data) - 1) {
956 if (crc)
957 *crc = crc32_be(*crc, (void *)elem,
958 elem->datalen + 2);
959 elems->he_operation = data;
960 }
961 break;
962 case WLAN_EID_EXT_UORA:
963 if (len >= 1)
964 elems->uora_element = data;
965 break;
966 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
967 if (len == 3)
968 elems->max_channel_switch_time = data;
969 break;
970 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
971 if (len >= sizeof(*elems->mbssid_config_ie))
972 elems->mbssid_config_ie = data;
973 break;
974 case WLAN_EID_EXT_HE_SPR:
975 if (len >= sizeof(*elems->he_spr) &&
976 len >= ieee80211_he_spr_size(data))
977 elems->he_spr = data;
978 break;
979 case WLAN_EID_EXT_HE_6GHZ_CAPA:
980 if (len >= sizeof(*elems->he_6ghz_capa))
981 elems->he_6ghz_capa = data;
982 break;
983 case WLAN_EID_EXT_EHT_CAPABILITY:
984 if (ieee80211_eht_capa_size_ok(elems->he_cap,
985 data, len,
986 params->from_ap)) {
987 elems->eht_cap = data;
988 elems->eht_cap_len = len;
989 }
990 break;
991 case WLAN_EID_EXT_EHT_OPERATION:
992 if (ieee80211_eht_oper_size_ok(data, len))
993 elems->eht_operation = data;
994 break;
995 case WLAN_EID_EXT_EHT_MULTI_LINK:
996 if (ieee80211_mle_size_ok(data, len)) {
997 elems->multi_link = (void *)data;
998 elems->multi_link_len = len;
999 }
1000 break;
1001 }
1002}
1003
1004static u32
1005_ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
1006 struct ieee802_11_elems *elems,
1007 const struct element *check_inherit)
1008{
1009 const struct element *elem;
1010 bool calc_crc = params->filter != 0;
1011 DECLARE_BITMAP(seen_elems, 256);
1012 u32 crc = params->crc;
1013 const u8 *ie;
1014
1015 bitmap_zero(seen_elems, 256);
1016
1017 for_each_element(elem, params->start, params->len) {
1018 bool elem_parse_failed;
1019 u8 id = elem->id;
1020 u8 elen = elem->datalen;
1021 const u8 *pos = elem->data;
1022
1023 if (check_inherit &&
1024 !cfg80211_is_element_inherited(elem,
1025 check_inherit))
1026 continue;
1027
1028 switch (id) {
1029 case WLAN_EID_SSID:
1030 case WLAN_EID_SUPP_RATES:
1031 case WLAN_EID_FH_PARAMS:
1032 case WLAN_EID_DS_PARAMS:
1033 case WLAN_EID_CF_PARAMS:
1034 case WLAN_EID_TIM:
1035 case WLAN_EID_IBSS_PARAMS:
1036 case WLAN_EID_CHALLENGE:
1037 case WLAN_EID_RSN:
1038 case WLAN_EID_ERP_INFO:
1039 case WLAN_EID_EXT_SUPP_RATES:
1040 case WLAN_EID_HT_CAPABILITY:
1041 case WLAN_EID_HT_OPERATION:
1042 case WLAN_EID_VHT_CAPABILITY:
1043 case WLAN_EID_VHT_OPERATION:
1044 case WLAN_EID_MESH_ID:
1045 case WLAN_EID_MESH_CONFIG:
1046 case WLAN_EID_PEER_MGMT:
1047 case WLAN_EID_PREQ:
1048 case WLAN_EID_PREP:
1049 case WLAN_EID_PERR:
1050 case WLAN_EID_RANN:
1051 case WLAN_EID_CHANNEL_SWITCH:
1052 case WLAN_EID_EXT_CHANSWITCH_ANN:
1053 case WLAN_EID_COUNTRY:
1054 case WLAN_EID_PWR_CONSTRAINT:
1055 case WLAN_EID_TIMEOUT_INTERVAL:
1056 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1057 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1058 case WLAN_EID_CHAN_SWITCH_PARAM:
1059 case WLAN_EID_EXT_CAPABILITY:
1060 case WLAN_EID_CHAN_SWITCH_TIMING:
1061 case WLAN_EID_LINK_ID:
1062 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1063 case WLAN_EID_RSNX:
1064 case WLAN_EID_S1G_BCN_COMPAT:
1065 case WLAN_EID_S1G_CAPABILITIES:
1066 case WLAN_EID_S1G_OPERATION:
1067 case WLAN_EID_AID_RESPONSE:
1068 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1069 /*
1070 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1071 * that if the content gets bigger it might be needed more than once
1072 */
1073 if (test_bit(id, seen_elems)) {
1074 elems->parse_error = true;
1075 continue;
1076 }
1077 break;
1078 }
1079
1080 if (calc_crc && id < 64 && (params->filter & (1ULL << id)))
1081 crc = crc32_be(crc, pos - 2, elen + 2);
1082
1083 elem_parse_failed = false;
1084
1085 switch (id) {
1086 case WLAN_EID_LINK_ID:
1087 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1088 elem_parse_failed = true;
1089 break;
1090 }
1091 elems->lnk_id = (void *)(pos - 2);
1092 break;
1093 case WLAN_EID_CHAN_SWITCH_TIMING:
1094 if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1095 elem_parse_failed = true;
1096 break;
1097 }
1098 elems->ch_sw_timing = (void *)pos;
1099 break;
1100 case WLAN_EID_EXT_CAPABILITY:
1101 elems->ext_capab = pos;
1102 elems->ext_capab_len = elen;
1103 break;
1104 case WLAN_EID_SSID:
1105 elems->ssid = pos;
1106 elems->ssid_len = elen;
1107 break;
1108 case WLAN_EID_SUPP_RATES:
1109 elems->supp_rates = pos;
1110 elems->supp_rates_len = elen;
1111 break;
1112 case WLAN_EID_DS_PARAMS:
1113 if (elen >= 1)
1114 elems->ds_params = pos;
1115 else
1116 elem_parse_failed = true;
1117 break;
1118 case WLAN_EID_TIM:
1119 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1120 elems->tim = (void *)pos;
1121 elems->tim_len = elen;
1122 } else
1123 elem_parse_failed = true;
1124 break;
1125 case WLAN_EID_VENDOR_SPECIFIC:
1126 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1127 pos[2] == 0xf2) {
1128 /* Microsoft OUI (00:50:F2) */
1129
1130 if (calc_crc)
1131 crc = crc32_be(crc, pos - 2, elen + 2);
1132
1133 if (elen >= 5 && pos[3] == 2) {
1134 /* OUI Type 2 - WMM IE */
1135 if (pos[4] == 0) {
1136 elems->wmm_info = pos;
1137 elems->wmm_info_len = elen;
1138 } else if (pos[4] == 1) {
1139 elems->wmm_param = pos;
1140 elems->wmm_param_len = elen;
1141 }
1142 }
1143 }
1144 break;
1145 case WLAN_EID_RSN:
1146 elems->rsn = pos;
1147 elems->rsn_len = elen;
1148 break;
1149 case WLAN_EID_ERP_INFO:
1150 if (elen >= 1)
1151 elems->erp_info = pos;
1152 else
1153 elem_parse_failed = true;
1154 break;
1155 case WLAN_EID_EXT_SUPP_RATES:
1156 elems->ext_supp_rates = pos;
1157 elems->ext_supp_rates_len = elen;
1158 break;
1159 case WLAN_EID_HT_CAPABILITY:
1160 if (elen >= sizeof(struct ieee80211_ht_cap))
1161 elems->ht_cap_elem = (void *)pos;
1162 else
1163 elem_parse_failed = true;
1164 break;
1165 case WLAN_EID_HT_OPERATION:
1166 if (elen >= sizeof(struct ieee80211_ht_operation))
1167 elems->ht_operation = (void *)pos;
1168 else
1169 elem_parse_failed = true;
1170 break;
1171 case WLAN_EID_VHT_CAPABILITY:
1172 if (elen >= sizeof(struct ieee80211_vht_cap))
1173 elems->vht_cap_elem = (void *)pos;
1174 else
1175 elem_parse_failed = true;
1176 break;
1177 case WLAN_EID_VHT_OPERATION:
1178 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1179 elems->vht_operation = (void *)pos;
1180 if (calc_crc)
1181 crc = crc32_be(crc, pos - 2, elen + 2);
1182 break;
1183 }
1184 elem_parse_failed = true;
1185 break;
1186 case WLAN_EID_OPMODE_NOTIF:
1187 if (elen > 0) {
1188 elems->opmode_notif = pos;
1189 if (calc_crc)
1190 crc = crc32_be(crc, pos - 2, elen + 2);
1191 break;
1192 }
1193 elem_parse_failed = true;
1194 break;
1195 case WLAN_EID_MESH_ID:
1196 elems->mesh_id = pos;
1197 elems->mesh_id_len = elen;
1198 break;
1199 case WLAN_EID_MESH_CONFIG:
1200 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1201 elems->mesh_config = (void *)pos;
1202 else
1203 elem_parse_failed = true;
1204 break;
1205 case WLAN_EID_PEER_MGMT:
1206 elems->peering = pos;
1207 elems->peering_len = elen;
1208 break;
1209 case WLAN_EID_MESH_AWAKE_WINDOW:
1210 if (elen >= 2)
1211 elems->awake_window = (void *)pos;
1212 break;
1213 case WLAN_EID_PREQ:
1214 elems->preq = pos;
1215 elems->preq_len = elen;
1216 break;
1217 case WLAN_EID_PREP:
1218 elems->prep = pos;
1219 elems->prep_len = elen;
1220 break;
1221 case WLAN_EID_PERR:
1222 elems->perr = pos;
1223 elems->perr_len = elen;
1224 break;
1225 case WLAN_EID_RANN:
1226 if (elen >= sizeof(struct ieee80211_rann_ie))
1227 elems->rann = (void *)pos;
1228 else
1229 elem_parse_failed = true;
1230 break;
1231 case WLAN_EID_CHANNEL_SWITCH:
1232 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1233 elem_parse_failed = true;
1234 break;
1235 }
1236 elems->ch_switch_ie = (void *)pos;
1237 break;
1238 case WLAN_EID_EXT_CHANSWITCH_ANN:
1239 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1240 elem_parse_failed = true;
1241 break;
1242 }
1243 elems->ext_chansw_ie = (void *)pos;
1244 break;
1245 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1246 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1247 elem_parse_failed = true;
1248 break;
1249 }
1250 elems->sec_chan_offs = (void *)pos;
1251 break;
1252 case WLAN_EID_CHAN_SWITCH_PARAM:
1253 if (elen <
1254 sizeof(*elems->mesh_chansw_params_ie)) {
1255 elem_parse_failed = true;
1256 break;
1257 }
1258 elems->mesh_chansw_params_ie = (void *)pos;
1259 break;
1260 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1261 if (!params->action ||
1262 elen < sizeof(*elems->wide_bw_chansw_ie)) {
1263 elem_parse_failed = true;
1264 break;
1265 }
1266 elems->wide_bw_chansw_ie = (void *)pos;
1267 break;
1268 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1269 if (params->action) {
1270 elem_parse_failed = true;
1271 break;
1272 }
1273 /*
1274 * This is a bit tricky, but as we only care about
1275 * the wide bandwidth channel switch element, so
1276 * just parse it out manually.
1277 */
1278 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1279 pos, elen);
1280 if (ie) {
1281 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1282 elems->wide_bw_chansw_ie =
1283 (void *)(ie + 2);
1284 else
1285 elem_parse_failed = true;
1286 }
1287 break;
1288 case WLAN_EID_COUNTRY:
1289 elems->country_elem = pos;
1290 elems->country_elem_len = elen;
1291 break;
1292 case WLAN_EID_PWR_CONSTRAINT:
1293 if (elen != 1) {
1294 elem_parse_failed = true;
1295 break;
1296 }
1297 elems->pwr_constr_elem = pos;
1298 break;
1299 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1300 /* Lots of different options exist, but we only care
1301 * about the Dynamic Transmit Power Control element.
1302 * First check for the Cisco OUI, then for the DTPC
1303 * tag (0x00).
1304 */
1305 if (elen < 4) {
1306 elem_parse_failed = true;
1307 break;
1308 }
1309
1310 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1311 pos[2] != 0x96 || pos[3] != 0x00)
1312 break;
1313
1314 if (elen != 6) {
1315 elem_parse_failed = true;
1316 break;
1317 }
1318
1319 if (calc_crc)
1320 crc = crc32_be(crc, pos - 2, elen + 2);
1321
1322 elems->cisco_dtpc_elem = pos;
1323 break;
1324 case WLAN_EID_ADDBA_EXT:
1325 if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1326 elem_parse_failed = true;
1327 break;
1328 }
1329 elems->addba_ext_ie = (void *)pos;
1330 break;
1331 case WLAN_EID_TIMEOUT_INTERVAL:
1332 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1333 elems->timeout_int = (void *)pos;
1334 else
1335 elem_parse_failed = true;
1336 break;
1337 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1338 if (elen >= sizeof(*elems->max_idle_period_ie))
1339 elems->max_idle_period_ie = (void *)pos;
1340 break;
1341 case WLAN_EID_RSNX:
1342 elems->rsnx = pos;
1343 elems->rsnx_len = elen;
1344 break;
1345 case WLAN_EID_TX_POWER_ENVELOPE:
1346 if (elen < 1 ||
1347 elen > sizeof(struct ieee80211_tx_pwr_env))
1348 break;
1349
1350 if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env))
1351 break;
1352
1353 elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos;
1354 elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen;
1355 elems->tx_pwr_env_num++;
1356 break;
1357 case WLAN_EID_EXTENSION:
1358 ieee80211_parse_extension_element(calc_crc ?
1359 &crc : NULL,
1360 elem, elems, params);
1361 break;
1362 case WLAN_EID_S1G_CAPABILITIES:
1363 if (elen >= sizeof(*elems->s1g_capab))
1364 elems->s1g_capab = (void *)pos;
1365 else
1366 elem_parse_failed = true;
1367 break;
1368 case WLAN_EID_S1G_OPERATION:
1369 if (elen == sizeof(*elems->s1g_oper))
1370 elems->s1g_oper = (void *)pos;
1371 else
1372 elem_parse_failed = true;
1373 break;
1374 case WLAN_EID_S1G_BCN_COMPAT:
1375 if (elen == sizeof(*elems->s1g_bcn_compat))
1376 elems->s1g_bcn_compat = (void *)pos;
1377 else
1378 elem_parse_failed = true;
1379 break;
1380 case WLAN_EID_AID_RESPONSE:
1381 if (elen == sizeof(struct ieee80211_aid_response_ie))
1382 elems->aid_resp = (void *)pos;
1383 else
1384 elem_parse_failed = true;
1385 break;
1386 default:
1387 break;
1388 }
1389
1390 if (elem_parse_failed)
1391 elems->parse_error = true;
1392 else
1393 __set_bit(id, seen_elems);
1394 }
1395
1396 if (!for_each_element_completed(elem, params->start, params->len))
1397 elems->parse_error = true;
1398
1399 return crc;
1400}
1401
1402static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1403 struct ieee802_11_elems *elems,
1404 struct cfg80211_bss *bss,
1405 u8 *nontransmitted_profile)
1406{
1407 const struct element *elem, *sub;
1408 size_t profile_len = 0;
1409 bool found = false;
1410
1411 if (!bss || !bss->transmitted_bss)
1412 return profile_len;
1413
1414 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1415 if (elem->datalen < 2)
1416 continue;
1417 if (elem->data[0] < 1 || elem->data[0] > 8)
1418 continue;
1419
1420 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1421 u8 new_bssid[ETH_ALEN];
1422 const u8 *index;
1423
1424 if (sub->id != 0 || sub->datalen < 4) {
1425 /* not a valid BSS profile */
1426 continue;
1427 }
1428
1429 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1430 sub->data[1] != 2) {
1431 /* The first element of the
1432 * Nontransmitted BSSID Profile is not
1433 * the Nontransmitted BSSID Capability
1434 * element.
1435 */
1436 continue;
1437 }
1438
1439 memset(nontransmitted_profile, 0, len);
1440 profile_len = cfg80211_merge_profile(start, len,
1441 elem,
1442 sub,
1443 nontransmitted_profile,
1444 len);
1445
1446 /* found a Nontransmitted BSSID Profile */
1447 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1448 nontransmitted_profile,
1449 profile_len);
1450 if (!index || index[1] < 1 || index[2] == 0) {
1451 /* Invalid MBSSID Index element */
1452 continue;
1453 }
1454
1455 cfg80211_gen_new_bssid(bss->transmitted_bss->bssid,
1456 elem->data[0],
1457 index[2],
1458 new_bssid);
1459 if (ether_addr_equal(new_bssid, bss->bssid)) {
1460 found = true;
1461 elems->bssid_index_len = index[1];
1462 elems->bssid_index = (void *)&index[2];
1463 break;
1464 }
1465 }
1466 }
1467
1468 return found ? profile_len : 0;
1469}
1470
1471static void ieee80211_defragment_element(struct ieee802_11_elems *elems,
1472 void **elem_ptr, size_t *len,
1473 size_t total_len, u8 frag_id)
1474{
1475 u8 *data = *elem_ptr, *pos, *start;
1476 const struct element *elem;
1477
1478 /*
1479 * Since 'data' points to the data of the element, not the element
1480 * itself, allow 254 in case it was an extended element where the
1481 * extended ID isn't part of the data we see here and thus not part of
1482 * 'len' either.
1483 */
1484 if (!data || (*len != 254 && *len != 255))
1485 return;
1486
1487 start = elems->scratch_pos;
1488
1489 if (WARN_ON(*len > (elems->scratch + elems->scratch_len -
1490 elems->scratch_pos)))
1491 return;
1492
1493 memcpy(elems->scratch_pos, data, *len);
1494 elems->scratch_pos += *len;
1495
1496 pos = data + *len;
1497 total_len -= *len;
1498 for_each_element(elem, pos, total_len) {
1499 if (elem->id != frag_id)
1500 break;
1501
1502 if (WARN_ON(elem->datalen >
1503 (elems->scratch + elems->scratch_len -
1504 elems->scratch_pos)))
1505 return;
1506
1507 memcpy(elems->scratch_pos, elem->data, elem->datalen);
1508 elems->scratch_pos += elem->datalen;
1509
1510 *len += elem->datalen;
1511 }
1512
1513 *elem_ptr = start;
1514}
1515
1516static void ieee80211_mle_get_sta_prof(struct ieee802_11_elems *elems,
1517 u8 link_id)
1518{
1519 const struct ieee80211_multi_link_elem *ml = elems->multi_link;
1520 size_t ml_len = elems->multi_link_len;
1521 const struct element *sub;
1522
1523 if (!ml || !ml_len)
1524 return;
1525
1526 if (le16_get_bits(ml->control, IEEE80211_ML_CONTROL_TYPE) !=
1527 IEEE80211_ML_CONTROL_TYPE_BASIC)
1528 return;
1529
1530 for_each_mle_subelement(sub, (u8 *)ml, ml_len) {
1531 struct ieee80211_mle_per_sta_profile *prof = (void *)sub->data;
1532 u16 control;
1533
1534 if (sub->id != IEEE80211_MLE_SUBELEM_PER_STA_PROFILE)
1535 continue;
1536
1537 if (!ieee80211_mle_sta_prof_size_ok(sub->data, sub->datalen))
1538 return;
1539
1540 control = le16_to_cpu(prof->control);
1541
1542 if (link_id != u16_get_bits(control,
1543 IEEE80211_MLE_STA_CONTROL_LINK_ID))
1544 continue;
1545
1546 if (!(control & IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE))
1547 return;
1548
1549 elems->prof = prof;
1550 elems->sta_prof_len = sub->datalen;
1551
1552 /* the sub element can be fragmented */
1553 ieee80211_defragment_element(elems, (void **)&elems->prof,
1554 &elems->sta_prof_len,
1555 ml_len - (sub->data - (u8 *)ml),
1556 IEEE80211_MLE_SUBELEM_FRAGMENT);
1557 return;
1558 }
1559}
1560
1561static void ieee80211_mle_parse_link(struct ieee802_11_elems *elems,
1562 struct ieee80211_elems_parse_params *params)
1563{
1564 struct ieee80211_mle_per_sta_profile *prof;
1565 struct ieee80211_elems_parse_params sub = {
1566 .action = params->action,
1567 .from_ap = params->from_ap,
1568 .link_id = -1,
1569 };
1570 const struct element *non_inherit = NULL;
1571 const u8 *end;
1572
1573 if (params->link_id == -1)
1574 return;
1575
1576 ieee80211_defragment_element(elems, (void **)&elems->multi_link,
1577 &elems->multi_link_len,
1578 elems->total_len - ((u8 *)elems->multi_link -
1579 elems->ie_start),
1580 WLAN_EID_FRAGMENT);
1581
1582 ieee80211_mle_get_sta_prof(elems, params->link_id);
1583 prof = elems->prof;
1584
1585 if (!prof)
1586 return;
1587
1588 /* check if we have the 4 bytes for the fixed part in assoc response */
1589 if (elems->sta_prof_len < sizeof(*prof) + prof->sta_info_len - 1 + 4) {
1590 elems->prof = NULL;
1591 elems->sta_prof_len = 0;
1592 return;
1593 }
1594
1595 /*
1596 * Skip the capability information and the status code that are expected
1597 * as part of the station profile in association response frames. Note
1598 * the -1 is because the 'sta_info_len' is accounted to as part of the
1599 * per-STA profile, but not part of the 'u8 variable[]' portion.
1600 */
1601 sub.start = prof->variable + prof->sta_info_len - 1 + 4;
1602 end = (const u8 *)prof + elems->sta_prof_len;
1603 sub.len = end - sub.start;
1604
1605 non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1606 sub.start, sub.len);
1607 _ieee802_11_parse_elems_full(&sub, elems, non_inherit);
1608}
1609
1610struct ieee802_11_elems *
1611ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params)
1612{
1613 struct ieee802_11_elems *elems;
1614 const struct element *non_inherit = NULL;
1615 u8 *nontransmitted_profile;
1616 int nontransmitted_profile_len = 0;
1617 size_t scratch_len = params->scratch_len ?: 3 * params->len;
1618
1619 elems = kzalloc(sizeof(*elems) + scratch_len, GFP_ATOMIC);
1620 if (!elems)
1621 return NULL;
1622 elems->ie_start = params->start;
1623 elems->total_len = params->len;
1624 elems->scratch_len = scratch_len;
1625 elems->scratch_pos = elems->scratch;
1626
1627 nontransmitted_profile = elems->scratch_pos;
1628 nontransmitted_profile_len =
1629 ieee802_11_find_bssid_profile(params->start, params->len,
1630 elems, params->bss,
1631 nontransmitted_profile);
1632 elems->scratch_pos += nontransmitted_profile_len;
1633 elems->scratch_len -= nontransmitted_profile_len;
1634 non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1635 nontransmitted_profile,
1636 nontransmitted_profile_len);
1637
1638 elems->crc = _ieee802_11_parse_elems_full(params, elems, non_inherit);
1639
1640 /* Override with nontransmitted profile, if found */
1641 if (nontransmitted_profile_len) {
1642 struct ieee80211_elems_parse_params sub = {
1643 .start = nontransmitted_profile,
1644 .len = nontransmitted_profile_len,
1645 .action = params->action,
1646 .link_id = params->link_id,
1647 };
1648
1649 _ieee802_11_parse_elems_full(&sub, elems, NULL);
1650 }
1651
1652 ieee80211_mle_parse_link(elems, params);
1653
1654 if (elems->tim && !elems->parse_error) {
1655 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1656
1657 elems->dtim_period = tim_ie->dtim_period;
1658 elems->dtim_count = tim_ie->dtim_count;
1659 }
1660
1661 /* Override DTIM period and count if needed */
1662 if (elems->bssid_index &&
1663 elems->bssid_index_len >=
1664 offsetofend(struct ieee80211_bssid_index, dtim_period))
1665 elems->dtim_period = elems->bssid_index->dtim_period;
1666
1667 if (elems->bssid_index &&
1668 elems->bssid_index_len >=
1669 offsetofend(struct ieee80211_bssid_index, dtim_count))
1670 elems->dtim_count = elems->bssid_index->dtim_count;
1671
1672 return elems;
1673}
1674
1675void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1676 struct ieee80211_tx_queue_params
1677 *qparam, int ac)
1678{
1679 struct ieee80211_chanctx_conf *chanctx_conf;
1680 const struct ieee80211_reg_rule *rrule;
1681 const struct ieee80211_wmm_ac *wmm_ac;
1682 u16 center_freq = 0;
1683
1684 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1685 sdata->vif.type != NL80211_IFTYPE_STATION)
1686 return;
1687
1688 rcu_read_lock();
1689 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1690 if (chanctx_conf)
1691 center_freq = chanctx_conf->def.chan->center_freq;
1692
1693 if (!center_freq) {
1694 rcu_read_unlock();
1695 return;
1696 }
1697
1698 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1699
1700 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1701 rcu_read_unlock();
1702 return;
1703 }
1704
1705 if (sdata->vif.type == NL80211_IFTYPE_AP)
1706 wmm_ac = &rrule->wmm_rule.ap[ac];
1707 else
1708 wmm_ac = &rrule->wmm_rule.client[ac];
1709 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1710 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1711 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1712 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1713 rcu_read_unlock();
1714}
1715
1716void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
1717 bool bss_notify, bool enable_qos)
1718{
1719 struct ieee80211_sub_if_data *sdata = link->sdata;
1720 struct ieee80211_local *local = sdata->local;
1721 struct ieee80211_tx_queue_params qparam;
1722 struct ieee80211_chanctx_conf *chanctx_conf;
1723 int ac;
1724 bool use_11b;
1725 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1726 int aCWmin, aCWmax;
1727
1728 if (!local->ops->conf_tx)
1729 return;
1730
1731 if (local->hw.queues < IEEE80211_NUM_ACS)
1732 return;
1733
1734 memset(&qparam, 0, sizeof(qparam));
1735
1736 rcu_read_lock();
1737 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1738 use_11b = (chanctx_conf &&
1739 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1740 !link->operating_11g_mode;
1741 rcu_read_unlock();
1742
1743 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1744
1745 /* Set defaults according to 802.11-2007 Table 7-37 */
1746 aCWmax = 1023;
1747 if (use_11b)
1748 aCWmin = 31;
1749 else
1750 aCWmin = 15;
1751
1752 /* Confiure old 802.11b/g medium access rules. */
1753 qparam.cw_max = aCWmax;
1754 qparam.cw_min = aCWmin;
1755 qparam.txop = 0;
1756 qparam.aifs = 2;
1757
1758 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1759 /* Update if QoS is enabled. */
1760 if (enable_qos) {
1761 switch (ac) {
1762 case IEEE80211_AC_BK:
1763 qparam.cw_max = aCWmax;
1764 qparam.cw_min = aCWmin;
1765 qparam.txop = 0;
1766 if (is_ocb)
1767 qparam.aifs = 9;
1768 else
1769 qparam.aifs = 7;
1770 break;
1771 /* never happens but let's not leave undefined */
1772 default:
1773 case IEEE80211_AC_BE:
1774 qparam.cw_max = aCWmax;
1775 qparam.cw_min = aCWmin;
1776 qparam.txop = 0;
1777 if (is_ocb)
1778 qparam.aifs = 6;
1779 else
1780 qparam.aifs = 3;
1781 break;
1782 case IEEE80211_AC_VI:
1783 qparam.cw_max = aCWmin;
1784 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1785 if (is_ocb)
1786 qparam.txop = 0;
1787 else if (use_11b)
1788 qparam.txop = 6016/32;
1789 else
1790 qparam.txop = 3008/32;
1791
1792 if (is_ocb)
1793 qparam.aifs = 3;
1794 else
1795 qparam.aifs = 2;
1796 break;
1797 case IEEE80211_AC_VO:
1798 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1799 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1800 if (is_ocb)
1801 qparam.txop = 0;
1802 else if (use_11b)
1803 qparam.txop = 3264/32;
1804 else
1805 qparam.txop = 1504/32;
1806 qparam.aifs = 2;
1807 break;
1808 }
1809 }
1810 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1811
1812 qparam.uapsd = false;
1813
1814 link->tx_conf[ac] = qparam;
1815 drv_conf_tx(local, link, ac, &qparam);
1816 }
1817
1818 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1819 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1820 sdata->vif.type != NL80211_IFTYPE_NAN) {
1821 link->conf->qos = enable_qos;
1822 if (bss_notify)
1823 ieee80211_link_info_change_notify(sdata, link,
1824 BSS_CHANGED_QOS);
1825 }
1826}
1827
1828void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1829 u16 transaction, u16 auth_alg, u16 status,
1830 const u8 *extra, size_t extra_len, const u8 *da,
1831 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1832 u32 tx_flags)
1833{
1834 struct ieee80211_local *local = sdata->local;
1835 struct sk_buff *skb;
1836 struct ieee80211_mgmt *mgmt;
1837 bool multi_link = sdata->vif.valid_links;
1838 struct {
1839 u8 id;
1840 u8 len;
1841 u8 ext_id;
1842 struct ieee80211_multi_link_elem ml;
1843 struct ieee80211_mle_basic_common_info basic;
1844 } __packed mle = {
1845 .id = WLAN_EID_EXTENSION,
1846 .len = sizeof(mle) - 2,
1847 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK,
1848 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC),
1849 .basic.len = sizeof(mle.basic),
1850 };
1851 int err;
1852
1853 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN);
1854
1855 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1856 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1857 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN +
1858 multi_link * sizeof(mle));
1859 if (!skb)
1860 return;
1861
1862 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1863
1864 mgmt = skb_put_zero(skb, 24 + 6);
1865 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1866 IEEE80211_STYPE_AUTH);
1867 memcpy(mgmt->da, da, ETH_ALEN);
1868 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1869 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1870 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1871 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1872 mgmt->u.auth.status_code = cpu_to_le16(status);
1873 if (extra)
1874 skb_put_data(skb, extra, extra_len);
1875 if (multi_link)
1876 skb_put_data(skb, &mle, sizeof(mle));
1877
1878 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1879 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1880 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1881 if (WARN_ON(err)) {
1882 kfree_skb(skb);
1883 return;
1884 }
1885 }
1886
1887 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1888 tx_flags;
1889 ieee80211_tx_skb(sdata, skb);
1890}
1891
1892void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1893 const u8 *da, const u8 *bssid,
1894 u16 stype, u16 reason,
1895 bool send_frame, u8 *frame_buf)
1896{
1897 struct ieee80211_local *local = sdata->local;
1898 struct sk_buff *skb;
1899 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1900
1901 /* build frame */
1902 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1903 mgmt->duration = 0; /* initialize only */
1904 mgmt->seq_ctrl = 0; /* initialize only */
1905 memcpy(mgmt->da, da, ETH_ALEN);
1906 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1907 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1908 /* u.deauth.reason_code == u.disassoc.reason_code */
1909 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1910
1911 if (send_frame) {
1912 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1913 IEEE80211_DEAUTH_FRAME_LEN);
1914 if (!skb)
1915 return;
1916
1917 skb_reserve(skb, local->hw.extra_tx_headroom);
1918
1919 /* copy in frame */
1920 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1921
1922 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1923 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1924 IEEE80211_SKB_CB(skb)->flags |=
1925 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1926
1927 ieee80211_tx_skb(sdata, skb);
1928 }
1929}
1930
1931static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1932{
1933 if ((end - pos) < 5)
1934 return pos;
1935
1936 *pos++ = WLAN_EID_EXTENSION;
1937 *pos++ = 1 + sizeof(cap);
1938 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1939 memcpy(pos, &cap, sizeof(cap));
1940
1941 return pos + 2;
1942}
1943
1944static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1945 u8 *buffer, size_t buffer_len,
1946 const u8 *ie, size_t ie_len,
1947 enum nl80211_band band,
1948 u32 rate_mask,
1949 struct cfg80211_chan_def *chandef,
1950 size_t *offset, u32 flags)
1951{
1952 struct ieee80211_local *local = sdata->local;
1953 struct ieee80211_supported_band *sband;
1954 const struct ieee80211_sta_he_cap *he_cap;
1955 const struct ieee80211_sta_eht_cap *eht_cap;
1956 u8 *pos = buffer, *end = buffer + buffer_len;
1957 size_t noffset;
1958 int supp_rates_len, i;
1959 u8 rates[32];
1960 int num_rates;
1961 int ext_rates_len;
1962 int shift;
1963 u32 rate_flags;
1964 bool have_80mhz = false;
1965
1966 *offset = 0;
1967
1968 sband = local->hw.wiphy->bands[band];
1969 if (WARN_ON_ONCE(!sband))
1970 return 0;
1971
1972 rate_flags = ieee80211_chandef_rate_flags(chandef);
1973 shift = ieee80211_chandef_get_shift(chandef);
1974
1975 num_rates = 0;
1976 for (i = 0; i < sband->n_bitrates; i++) {
1977 if ((BIT(i) & rate_mask) == 0)
1978 continue; /* skip rate */
1979 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1980 continue;
1981
1982 rates[num_rates++] =
1983 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1984 (1 << shift) * 5);
1985 }
1986
1987 supp_rates_len = min_t(int, num_rates, 8);
1988
1989 if (end - pos < 2 + supp_rates_len)
1990 goto out_err;
1991 *pos++ = WLAN_EID_SUPP_RATES;
1992 *pos++ = supp_rates_len;
1993 memcpy(pos, rates, supp_rates_len);
1994 pos += supp_rates_len;
1995
1996 /* insert "request information" if in custom IEs */
1997 if (ie && ie_len) {
1998 static const u8 before_extrates[] = {
1999 WLAN_EID_SSID,
2000 WLAN_EID_SUPP_RATES,
2001 WLAN_EID_REQUEST,
2002 };
2003 noffset = ieee80211_ie_split(ie, ie_len,
2004 before_extrates,
2005 ARRAY_SIZE(before_extrates),
2006 *offset);
2007 if (end - pos < noffset - *offset)
2008 goto out_err;
2009 memcpy(pos, ie + *offset, noffset - *offset);
2010 pos += noffset - *offset;
2011 *offset = noffset;
2012 }
2013
2014 ext_rates_len = num_rates - supp_rates_len;
2015 if (ext_rates_len > 0) {
2016 if (end - pos < 2 + ext_rates_len)
2017 goto out_err;
2018 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2019 *pos++ = ext_rates_len;
2020 memcpy(pos, rates + supp_rates_len, ext_rates_len);
2021 pos += ext_rates_len;
2022 }
2023
2024 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
2025 if (end - pos < 3)
2026 goto out_err;
2027 *pos++ = WLAN_EID_DS_PARAMS;
2028 *pos++ = 1;
2029 *pos++ = ieee80211_frequency_to_channel(
2030 chandef->chan->center_freq);
2031 }
2032
2033 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
2034 goto done;
2035
2036 /* insert custom IEs that go before HT */
2037 if (ie && ie_len) {
2038 static const u8 before_ht[] = {
2039 /*
2040 * no need to list the ones split off already
2041 * (or generated here)
2042 */
2043 WLAN_EID_DS_PARAMS,
2044 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
2045 };
2046 noffset = ieee80211_ie_split(ie, ie_len,
2047 before_ht, ARRAY_SIZE(before_ht),
2048 *offset);
2049 if (end - pos < noffset - *offset)
2050 goto out_err;
2051 memcpy(pos, ie + *offset, noffset - *offset);
2052 pos += noffset - *offset;
2053 *offset = noffset;
2054 }
2055
2056 if (sband->ht_cap.ht_supported) {
2057 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
2058 goto out_err;
2059 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
2060 sband->ht_cap.cap);
2061 }
2062
2063 /* insert custom IEs that go before VHT */
2064 if (ie && ie_len) {
2065 static const u8 before_vht[] = {
2066 /*
2067 * no need to list the ones split off already
2068 * (or generated here)
2069 */
2070 WLAN_EID_BSS_COEX_2040,
2071 WLAN_EID_EXT_CAPABILITY,
2072 WLAN_EID_SSID_LIST,
2073 WLAN_EID_CHANNEL_USAGE,
2074 WLAN_EID_INTERWORKING,
2075 WLAN_EID_MESH_ID,
2076 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
2077 };
2078 noffset = ieee80211_ie_split(ie, ie_len,
2079 before_vht, ARRAY_SIZE(before_vht),
2080 *offset);
2081 if (end - pos < noffset - *offset)
2082 goto out_err;
2083 memcpy(pos, ie + *offset, noffset - *offset);
2084 pos += noffset - *offset;
2085 *offset = noffset;
2086 }
2087
2088 /* Check if any channel in this sband supports at least 80 MHz */
2089 for (i = 0; i < sband->n_channels; i++) {
2090 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
2091 IEEE80211_CHAN_NO_80MHZ))
2092 continue;
2093
2094 have_80mhz = true;
2095 break;
2096 }
2097
2098 if (sband->vht_cap.vht_supported && have_80mhz) {
2099 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
2100 goto out_err;
2101 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
2102 sband->vht_cap.cap);
2103 }
2104
2105 /* insert custom IEs that go before HE */
2106 if (ie && ie_len) {
2107 static const u8 before_he[] = {
2108 /*
2109 * no need to list the ones split off before VHT
2110 * or generated here
2111 */
2112 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
2113 WLAN_EID_AP_CSN,
2114 /* TODO: add 11ah/11aj/11ak elements */
2115 };
2116 noffset = ieee80211_ie_split(ie, ie_len,
2117 before_he, ARRAY_SIZE(before_he),
2118 *offset);
2119 if (end - pos < noffset - *offset)
2120 goto out_err;
2121 memcpy(pos, ie + *offset, noffset - *offset);
2122 pos += noffset - *offset;
2123 *offset = noffset;
2124 }
2125
2126 he_cap = ieee80211_get_he_iftype_cap(sband,
2127 ieee80211_vif_type_p2p(&sdata->vif));
2128 if (he_cap &&
2129 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2130 IEEE80211_CHAN_NO_HE)) {
2131 pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end);
2132 if (!pos)
2133 goto out_err;
2134 }
2135
2136 eht_cap = ieee80211_get_eht_iftype_cap(sband,
2137 ieee80211_vif_type_p2p(&sdata->vif));
2138
2139 if (eht_cap &&
2140 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2141 IEEE80211_CHAN_NO_HE |
2142 IEEE80211_CHAN_NO_EHT)) {
2143 pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end,
2144 sdata->vif.type == NL80211_IFTYPE_AP);
2145 if (!pos)
2146 goto out_err;
2147 }
2148
2149 if (cfg80211_any_usable_channels(local->hw.wiphy,
2150 BIT(NL80211_BAND_6GHZ),
2151 IEEE80211_CHAN_NO_HE)) {
2152 struct ieee80211_supported_band *sband6;
2153
2154 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2155 he_cap = ieee80211_get_he_iftype_cap(sband6,
2156 ieee80211_vif_type_p2p(&sdata->vif));
2157
2158 if (he_cap) {
2159 enum nl80211_iftype iftype =
2160 ieee80211_vif_type_p2p(&sdata->vif);
2161 __le16 cap = ieee80211_get_he_6ghz_capa(sband6, iftype);
2162
2163 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
2164 }
2165 }
2166
2167 /*
2168 * If adding more here, adjust code in main.c
2169 * that calculates local->scan_ies_len.
2170 */
2171
2172 return pos - buffer;
2173 out_err:
2174 WARN_ONCE(1, "not enough space for preq IEs\n");
2175 done:
2176 return pos - buffer;
2177}
2178
2179int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2180 size_t buffer_len,
2181 struct ieee80211_scan_ies *ie_desc,
2182 const u8 *ie, size_t ie_len,
2183 u8 bands_used, u32 *rate_masks,
2184 struct cfg80211_chan_def *chandef,
2185 u32 flags)
2186{
2187 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
2188 int i;
2189
2190 memset(ie_desc, 0, sizeof(*ie_desc));
2191
2192 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2193 if (bands_used & BIT(i)) {
2194 pos += ieee80211_build_preq_ies_band(sdata,
2195 buffer + pos,
2196 buffer_len - pos,
2197 ie, ie_len, i,
2198 rate_masks[i],
2199 chandef,
2200 &custom_ie_offset,
2201 flags);
2202 ie_desc->ies[i] = buffer + old_pos;
2203 ie_desc->len[i] = pos - old_pos;
2204 old_pos = pos;
2205 }
2206 }
2207
2208 /* add any remaining custom IEs */
2209 if (ie && ie_len) {
2210 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2211 "not enough space for preq custom IEs\n"))
2212 return pos;
2213 memcpy(buffer + pos, ie + custom_ie_offset,
2214 ie_len - custom_ie_offset);
2215 ie_desc->common_ies = buffer + pos;
2216 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2217 pos += ie_len - custom_ie_offset;
2218 }
2219
2220 return pos;
2221};
2222
2223struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2224 const u8 *src, const u8 *dst,
2225 u32 ratemask,
2226 struct ieee80211_channel *chan,
2227 const u8 *ssid, size_t ssid_len,
2228 const u8 *ie, size_t ie_len,
2229 u32 flags)
2230{
2231 struct ieee80211_local *local = sdata->local;
2232 struct cfg80211_chan_def chandef;
2233 struct sk_buff *skb;
2234 struct ieee80211_mgmt *mgmt;
2235 int ies_len;
2236 u32 rate_masks[NUM_NL80211_BANDS] = {};
2237 struct ieee80211_scan_ies dummy_ie_desc;
2238
2239 /*
2240 * Do not send DS Channel parameter for directed probe requests
2241 * in order to maximize the chance that we get a response. Some
2242 * badly-behaved APs don't respond when this parameter is included.
2243 */
2244 chandef.width = sdata->vif.bss_conf.chandef.width;
2245 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2246 chandef.chan = NULL;
2247 else
2248 chandef.chan = chan;
2249
2250 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2251 local->scan_ies_len + ie_len);
2252 if (!skb)
2253 return NULL;
2254
2255 rate_masks[chan->band] = ratemask;
2256 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2257 skb_tailroom(skb), &dummy_ie_desc,
2258 ie, ie_len, BIT(chan->band),
2259 rate_masks, &chandef, flags);
2260 skb_put(skb, ies_len);
2261
2262 if (dst) {
2263 mgmt = (struct ieee80211_mgmt *) skb->data;
2264 memcpy(mgmt->da, dst, ETH_ALEN);
2265 memcpy(mgmt->bssid, dst, ETH_ALEN);
2266 }
2267
2268 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2269
2270 return skb;
2271}
2272
2273u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2274 struct ieee802_11_elems *elems,
2275 enum nl80211_band band, u32 *basic_rates)
2276{
2277 struct ieee80211_supported_band *sband;
2278 size_t num_rates;
2279 u32 supp_rates, rate_flags;
2280 int i, j, shift;
2281
2282 sband = sdata->local->hw.wiphy->bands[band];
2283 if (WARN_ON(!sband))
2284 return 1;
2285
2286 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2287 shift = ieee80211_vif_get_shift(&sdata->vif);
2288
2289 num_rates = sband->n_bitrates;
2290 supp_rates = 0;
2291 for (i = 0; i < elems->supp_rates_len +
2292 elems->ext_supp_rates_len; i++) {
2293 u8 rate = 0;
2294 int own_rate;
2295 bool is_basic;
2296 if (i < elems->supp_rates_len)
2297 rate = elems->supp_rates[i];
2298 else if (elems->ext_supp_rates)
2299 rate = elems->ext_supp_rates
2300 [i - elems->supp_rates_len];
2301 own_rate = 5 * (rate & 0x7f);
2302 is_basic = !!(rate & 0x80);
2303
2304 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2305 continue;
2306
2307 for (j = 0; j < num_rates; j++) {
2308 int brate;
2309 if ((rate_flags & sband->bitrates[j].flags)
2310 != rate_flags)
2311 continue;
2312
2313 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2314 1 << shift);
2315
2316 if (brate == own_rate) {
2317 supp_rates |= BIT(j);
2318 if (basic_rates && is_basic)
2319 *basic_rates |= BIT(j);
2320 }
2321 }
2322 }
2323 return supp_rates;
2324}
2325
2326void ieee80211_stop_device(struct ieee80211_local *local)
2327{
2328 ieee80211_led_radio(local, false);
2329 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2330
2331 cancel_work_sync(&local->reconfig_filter);
2332
2333 flush_workqueue(local->workqueue);
2334 drv_stop(local);
2335}
2336
2337static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2338 bool aborted)
2339{
2340 /* It's possible that we don't handle the scan completion in
2341 * time during suspend, so if it's still marked as completed
2342 * here, queue the work and flush it to clean things up.
2343 * Instead of calling the worker function directly here, we
2344 * really queue it to avoid potential races with other flows
2345 * scheduling the same work.
2346 */
2347 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2348 /* If coming from reconfiguration failure, abort the scan so
2349 * we don't attempt to continue a partial HW scan - which is
2350 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2351 * completed scan, and a 5 GHz portion is still pending.
2352 */
2353 if (aborted)
2354 set_bit(SCAN_ABORTED, &local->scanning);
2355 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2356 flush_delayed_work(&local->scan_work);
2357 }
2358}
2359
2360static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2361{
2362 struct ieee80211_sub_if_data *sdata;
2363 struct ieee80211_chanctx *ctx;
2364
2365 /*
2366 * We get here if during resume the device can't be restarted properly.
2367 * We might also get here if this happens during HW reset, which is a
2368 * slightly different situation and we need to drop all connections in
2369 * the latter case.
2370 *
2371 * Ask cfg80211 to turn off all interfaces, this will result in more
2372 * warnings but at least we'll then get into a clean stopped state.
2373 */
2374
2375 local->resuming = false;
2376 local->suspended = false;
2377 local->in_reconfig = false;
2378
2379 ieee80211_flush_completed_scan(local, true);
2380
2381 /* scheduled scan clearly can't be running any more, but tell
2382 * cfg80211 and clear local state
2383 */
2384 ieee80211_sched_scan_end(local);
2385
2386 list_for_each_entry(sdata, &local->interfaces, list)
2387 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2388
2389 /* Mark channel contexts as not being in the driver any more to avoid
2390 * removing them from the driver during the shutdown process...
2391 */
2392 mutex_lock(&local->chanctx_mtx);
2393 list_for_each_entry(ctx, &local->chanctx_list, list)
2394 ctx->driver_present = false;
2395 mutex_unlock(&local->chanctx_mtx);
2396}
2397
2398static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2399 struct ieee80211_sub_if_data *sdata,
2400 struct ieee80211_link_data *link)
2401{
2402 struct ieee80211_chanctx_conf *conf;
2403 struct ieee80211_chanctx *ctx;
2404
2405 if (!local->use_chanctx)
2406 return;
2407
2408 mutex_lock(&local->chanctx_mtx);
2409 conf = rcu_dereference_protected(link->conf->chanctx_conf,
2410 lockdep_is_held(&local->chanctx_mtx));
2411 if (conf) {
2412 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2413 drv_assign_vif_chanctx(local, sdata, link->conf, ctx);
2414 }
2415 mutex_unlock(&local->chanctx_mtx);
2416}
2417
2418static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2419{
2420 struct ieee80211_local *local = sdata->local;
2421 struct sta_info *sta;
2422
2423 /* add STAs back */
2424 mutex_lock(&local->sta_mtx);
2425 list_for_each_entry(sta, &local->sta_list, list) {
2426 enum ieee80211_sta_state state;
2427
2428 if (!sta->uploaded || sta->sdata != sdata)
2429 continue;
2430
2431 for (state = IEEE80211_STA_NOTEXIST;
2432 state < sta->sta_state; state++)
2433 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2434 state + 1));
2435 }
2436 mutex_unlock(&local->sta_mtx);
2437}
2438
2439static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2440{
2441 struct cfg80211_nan_func *func, **funcs;
2442 int res, id, i = 0;
2443
2444 res = drv_start_nan(sdata->local, sdata,
2445 &sdata->u.nan.conf);
2446 if (WARN_ON(res))
2447 return res;
2448
2449 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2450 sizeof(*funcs),
2451 GFP_KERNEL);
2452 if (!funcs)
2453 return -ENOMEM;
2454
2455 /* Add all the functions:
2456 * This is a little bit ugly. We need to call a potentially sleeping
2457 * callback for each NAN function, so we can't hold the spinlock.
2458 */
2459 spin_lock_bh(&sdata->u.nan.func_lock);
2460
2461 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2462 funcs[i++] = func;
2463
2464 spin_unlock_bh(&sdata->u.nan.func_lock);
2465
2466 for (i = 0; funcs[i]; i++) {
2467 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2468 if (WARN_ON(res))
2469 ieee80211_nan_func_terminated(&sdata->vif,
2470 funcs[i]->instance_id,
2471 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2472 GFP_KERNEL);
2473 }
2474
2475 kfree(funcs);
2476
2477 return 0;
2478}
2479
2480int ieee80211_reconfig(struct ieee80211_local *local)
2481{
2482 struct ieee80211_hw *hw = &local->hw;
2483 struct ieee80211_sub_if_data *sdata;
2484 struct ieee80211_chanctx *ctx;
2485 struct sta_info *sta;
2486 int res, i;
2487 bool reconfig_due_to_wowlan = false;
2488 struct ieee80211_sub_if_data *sched_scan_sdata;
2489 struct cfg80211_sched_scan_request *sched_scan_req;
2490 bool sched_scan_stopped = false;
2491 bool suspended = local->suspended;
2492 bool in_reconfig = false;
2493
2494 /* nothing to do if HW shouldn't run */
2495 if (!local->open_count)
2496 goto wake_up;
2497
2498#ifdef CONFIG_PM
2499 if (suspended)
2500 local->resuming = true;
2501
2502 if (local->wowlan) {
2503 /*
2504 * In the wowlan case, both mac80211 and the device
2505 * are functional when the resume op is called, so
2506 * clear local->suspended so the device could operate
2507 * normally (e.g. pass rx frames).
2508 */
2509 local->suspended = false;
2510 res = drv_resume(local);
2511 local->wowlan = false;
2512 if (res < 0) {
2513 local->resuming = false;
2514 return res;
2515 }
2516 if (res == 0)
2517 goto wake_up;
2518 WARN_ON(res > 1);
2519 /*
2520 * res is 1, which means the driver requested
2521 * to go through a regular reset on wakeup.
2522 * restore local->suspended in this case.
2523 */
2524 reconfig_due_to_wowlan = true;
2525 local->suspended = true;
2526 }
2527#endif
2528
2529 /*
2530 * In case of hw_restart during suspend (without wowlan),
2531 * cancel restart work, as we are reconfiguring the device
2532 * anyway.
2533 * Note that restart_work is scheduled on a frozen workqueue,
2534 * so we can't deadlock in this case.
2535 */
2536 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2537 cancel_work_sync(&local->restart_work);
2538
2539 local->started = false;
2540
2541 /*
2542 * Upon resume hardware can sometimes be goofy due to
2543 * various platform / driver / bus issues, so restarting
2544 * the device may at times not work immediately. Propagate
2545 * the error.
2546 */
2547 res = drv_start(local);
2548 if (res) {
2549 if (suspended)
2550 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2551 else
2552 WARN(1, "Hardware became unavailable during restart.\n");
2553 ieee80211_handle_reconfig_failure(local);
2554 return res;
2555 }
2556
2557 /* setup fragmentation threshold */
2558 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2559
2560 /* setup RTS threshold */
2561 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2562
2563 /* reset coverage class */
2564 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2565
2566 ieee80211_led_radio(local, true);
2567 ieee80211_mod_tpt_led_trig(local,
2568 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2569
2570 /* add interfaces */
2571 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
2572 if (sdata) {
2573 /* in HW restart it exists already */
2574 WARN_ON(local->resuming);
2575 res = drv_add_interface(local, sdata);
2576 if (WARN_ON(res)) {
2577 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2578 synchronize_net();
2579 kfree(sdata);
2580 }
2581 }
2582
2583 list_for_each_entry(sdata, &local->interfaces, list) {
2584 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2585 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2586 ieee80211_sdata_running(sdata)) {
2587 res = drv_add_interface(local, sdata);
2588 if (WARN_ON(res))
2589 break;
2590 }
2591 }
2592
2593 /* If adding any of the interfaces failed above, roll back and
2594 * report failure.
2595 */
2596 if (res) {
2597 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2598 list)
2599 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2600 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2601 ieee80211_sdata_running(sdata))
2602 drv_remove_interface(local, sdata);
2603 ieee80211_handle_reconfig_failure(local);
2604 return res;
2605 }
2606
2607 /* add channel contexts */
2608 if (local->use_chanctx) {
2609 mutex_lock(&local->chanctx_mtx);
2610 list_for_each_entry(ctx, &local->chanctx_list, list)
2611 if (ctx->replace_state !=
2612 IEEE80211_CHANCTX_REPLACES_OTHER)
2613 WARN_ON(drv_add_chanctx(local, ctx));
2614 mutex_unlock(&local->chanctx_mtx);
2615
2616 sdata = wiphy_dereference(local->hw.wiphy,
2617 local->monitor_sdata);
2618 if (sdata && ieee80211_sdata_running(sdata))
2619 ieee80211_assign_chanctx(local, sdata, &sdata->deflink);
2620 }
2621
2622 /* reconfigure hardware */
2623 ieee80211_hw_config(local, ~0);
2624
2625 ieee80211_configure_filter(local);
2626
2627 /* Finally also reconfigure all the BSS information */
2628 list_for_each_entry(sdata, &local->interfaces, list) {
2629 unsigned int link_id;
2630 u32 changed;
2631
2632 if (!ieee80211_sdata_running(sdata))
2633 continue;
2634
2635 sdata_lock(sdata);
2636 for (link_id = 0;
2637 link_id < ARRAY_SIZE(sdata->vif.link_conf);
2638 link_id++) {
2639 struct ieee80211_link_data *link;
2640
2641 link = sdata_dereference(sdata->link[link_id], sdata);
2642 if (link)
2643 ieee80211_assign_chanctx(local, sdata, link);
2644 }
2645
2646 switch (sdata->vif.type) {
2647 case NL80211_IFTYPE_AP_VLAN:
2648 case NL80211_IFTYPE_MONITOR:
2649 break;
2650 case NL80211_IFTYPE_ADHOC:
2651 if (sdata->vif.cfg.ibss_joined)
2652 WARN_ON(drv_join_ibss(local, sdata));
2653 fallthrough;
2654 default:
2655 ieee80211_reconfig_stations(sdata);
2656 fallthrough;
2657 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2658 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2659 drv_conf_tx(local, &sdata->deflink, i,
2660 &sdata->deflink.tx_conf[i]);
2661 break;
2662 }
2663 sdata_unlock(sdata);
2664
2665 /* common change flags for all interface types */
2666 changed = BSS_CHANGED_ERP_CTS_PROT |
2667 BSS_CHANGED_ERP_PREAMBLE |
2668 BSS_CHANGED_ERP_SLOT |
2669 BSS_CHANGED_HT |
2670 BSS_CHANGED_BASIC_RATES |
2671 BSS_CHANGED_BEACON_INT |
2672 BSS_CHANGED_BSSID |
2673 BSS_CHANGED_CQM |
2674 BSS_CHANGED_QOS |
2675 BSS_CHANGED_IDLE |
2676 BSS_CHANGED_TXPOWER |
2677 BSS_CHANGED_MCAST_RATE;
2678
2679 if (sdata->vif.bss_conf.mu_mimo_owner)
2680 changed |= BSS_CHANGED_MU_GROUPS;
2681
2682 switch (sdata->vif.type) {
2683 case NL80211_IFTYPE_STATION:
2684 changed |= BSS_CHANGED_ASSOC |
2685 BSS_CHANGED_ARP_FILTER |
2686 BSS_CHANGED_PS;
2687
2688 /* Re-send beacon info report to the driver */
2689 if (sdata->deflink.u.mgd.have_beacon)
2690 changed |= BSS_CHANGED_BEACON_INFO;
2691
2692 if (sdata->vif.bss_conf.max_idle_period ||
2693 sdata->vif.bss_conf.protected_keep_alive)
2694 changed |= BSS_CHANGED_KEEP_ALIVE;
2695
2696 sdata_lock(sdata);
2697 ieee80211_bss_info_change_notify(sdata, changed);
2698 sdata_unlock(sdata);
2699 break;
2700 case NL80211_IFTYPE_OCB:
2701 changed |= BSS_CHANGED_OCB;
2702 ieee80211_bss_info_change_notify(sdata, changed);
2703 break;
2704 case NL80211_IFTYPE_ADHOC:
2705 changed |= BSS_CHANGED_IBSS;
2706 fallthrough;
2707 case NL80211_IFTYPE_AP:
2708 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2709
2710 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2711 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2712 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2713 changed |= BSS_CHANGED_FTM_RESPONDER;
2714
2715 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2716 changed |= BSS_CHANGED_AP_PROBE_RESP;
2717
2718 if (rcu_access_pointer(sdata->deflink.u.ap.beacon))
2719 drv_start_ap(local, sdata,
2720 sdata->deflink.conf);
2721 }
2722 fallthrough;
2723 case NL80211_IFTYPE_MESH_POINT:
2724 if (sdata->vif.bss_conf.enable_beacon) {
2725 changed |= BSS_CHANGED_BEACON |
2726 BSS_CHANGED_BEACON_ENABLED;
2727 ieee80211_bss_info_change_notify(sdata, changed);
2728 }
2729 break;
2730 case NL80211_IFTYPE_NAN:
2731 res = ieee80211_reconfig_nan(sdata);
2732 if (res < 0) {
2733 ieee80211_handle_reconfig_failure(local);
2734 return res;
2735 }
2736 break;
2737 case NL80211_IFTYPE_AP_VLAN:
2738 case NL80211_IFTYPE_MONITOR:
2739 case NL80211_IFTYPE_P2P_DEVICE:
2740 /* nothing to do */
2741 break;
2742 case NL80211_IFTYPE_UNSPECIFIED:
2743 case NUM_NL80211_IFTYPES:
2744 case NL80211_IFTYPE_P2P_CLIENT:
2745 case NL80211_IFTYPE_P2P_GO:
2746 case NL80211_IFTYPE_WDS:
2747 WARN_ON(1);
2748 break;
2749 }
2750 }
2751
2752 ieee80211_recalc_ps(local);
2753
2754 /*
2755 * The sta might be in psm against the ap (e.g. because
2756 * this was the state before a hw restart), so we
2757 * explicitly send a null packet in order to make sure
2758 * it'll sync against the ap (and get out of psm).
2759 */
2760 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2761 list_for_each_entry(sdata, &local->interfaces, list) {
2762 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2763 continue;
2764 if (!sdata->u.mgd.associated)
2765 continue;
2766
2767 ieee80211_send_nullfunc(local, sdata, false);
2768 }
2769 }
2770
2771 /* APs are now beaconing, add back stations */
2772 list_for_each_entry(sdata, &local->interfaces, list) {
2773 if (!ieee80211_sdata_running(sdata))
2774 continue;
2775
2776 sdata_lock(sdata);
2777 switch (sdata->vif.type) {
2778 case NL80211_IFTYPE_AP_VLAN:
2779 case NL80211_IFTYPE_AP:
2780 ieee80211_reconfig_stations(sdata);
2781 break;
2782 default:
2783 break;
2784 }
2785 sdata_unlock(sdata);
2786 }
2787
2788 /* add back keys */
2789 list_for_each_entry(sdata, &local->interfaces, list)
2790 ieee80211_reenable_keys(sdata);
2791
2792 /* Reconfigure sched scan if it was interrupted by FW restart */
2793 mutex_lock(&local->mtx);
2794 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2795 lockdep_is_held(&local->mtx));
2796 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2797 lockdep_is_held(&local->mtx));
2798 if (sched_scan_sdata && sched_scan_req)
2799 /*
2800 * Sched scan stopped, but we don't want to report it. Instead,
2801 * we're trying to reschedule. However, if more than one scan
2802 * plan was set, we cannot reschedule since we don't know which
2803 * scan plan was currently running (and some scan plans may have
2804 * already finished).
2805 */
2806 if (sched_scan_req->n_scan_plans > 1 ||
2807 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2808 sched_scan_req)) {
2809 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2810 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2811 sched_scan_stopped = true;
2812 }
2813 mutex_unlock(&local->mtx);
2814
2815 if (sched_scan_stopped)
2816 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2817
2818 wake_up:
2819
2820 if (local->monitors == local->open_count && local->monitors > 0)
2821 ieee80211_add_virtual_monitor(local);
2822
2823 /*
2824 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2825 * sessions can be established after a resume.
2826 *
2827 * Also tear down aggregation sessions since reconfiguring
2828 * them in a hardware restart scenario is not easily done
2829 * right now, and the hardware will have lost information
2830 * about the sessions, but we and the AP still think they
2831 * are active. This is really a workaround though.
2832 */
2833 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2834 mutex_lock(&local->sta_mtx);
2835
2836 list_for_each_entry(sta, &local->sta_list, list) {
2837 if (!local->resuming)
2838 ieee80211_sta_tear_down_BA_sessions(
2839 sta, AGG_STOP_LOCAL_REQUEST);
2840 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2841 }
2842
2843 mutex_unlock(&local->sta_mtx);
2844 }
2845
2846 /*
2847 * If this is for hw restart things are still running.
2848 * We may want to change that later, however.
2849 */
2850 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2851 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2852
2853 if (local->in_reconfig) {
2854 in_reconfig = local->in_reconfig;
2855 local->in_reconfig = false;
2856 barrier();
2857
2858 /* Restart deferred ROCs */
2859 mutex_lock(&local->mtx);
2860 ieee80211_start_next_roc(local);
2861 mutex_unlock(&local->mtx);
2862
2863 /* Requeue all works */
2864 list_for_each_entry(sdata, &local->interfaces, list)
2865 ieee80211_queue_work(&local->hw, &sdata->work);
2866 }
2867
2868 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2869 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2870 false);
2871
2872 if (in_reconfig) {
2873 list_for_each_entry(sdata, &local->interfaces, list) {
2874 if (!ieee80211_sdata_running(sdata))
2875 continue;
2876 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2877 ieee80211_sta_restart(sdata);
2878 }
2879 }
2880
2881 if (!suspended)
2882 return 0;
2883
2884#ifdef CONFIG_PM
2885 /* first set suspended false, then resuming */
2886 local->suspended = false;
2887 mb();
2888 local->resuming = false;
2889
2890 ieee80211_flush_completed_scan(local, false);
2891
2892 if (local->open_count && !reconfig_due_to_wowlan)
2893 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2894
2895 list_for_each_entry(sdata, &local->interfaces, list) {
2896 if (!ieee80211_sdata_running(sdata))
2897 continue;
2898 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2899 ieee80211_sta_restart(sdata);
2900 }
2901
2902 mod_timer(&local->sta_cleanup, jiffies + 1);
2903#else
2904 WARN_ON(1);
2905#endif
2906
2907 return 0;
2908}
2909
2910static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
2911{
2912 struct ieee80211_sub_if_data *sdata;
2913 struct ieee80211_local *local;
2914 struct ieee80211_key *key;
2915
2916 if (WARN_ON(!vif))
2917 return;
2918
2919 sdata = vif_to_sdata(vif);
2920 local = sdata->local;
2921
2922 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
2923 !local->resuming))
2924 return;
2925
2926 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
2927 !local->in_reconfig))
2928 return;
2929
2930 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2931 return;
2932
2933 sdata->flags |= flag;
2934
2935 mutex_lock(&local->key_mtx);
2936 list_for_each_entry(key, &sdata->key_list, list)
2937 key->flags |= KEY_FLAG_TAINTED;
2938 mutex_unlock(&local->key_mtx);
2939}
2940
2941void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
2942{
2943 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
2944}
2945EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
2946
2947void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2948{
2949 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
2950}
2951EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2952
2953void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2954 struct ieee80211_link_data *link)
2955{
2956 struct ieee80211_local *local = sdata->local;
2957 struct ieee80211_chanctx_conf *chanctx_conf;
2958 struct ieee80211_chanctx *chanctx;
2959
2960 mutex_lock(&local->chanctx_mtx);
2961
2962 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf,
2963 lockdep_is_held(&local->chanctx_mtx));
2964
2965 /*
2966 * This function can be called from a work, thus it may be possible
2967 * that the chanctx_conf is removed (due to a disconnection, for
2968 * example).
2969 * So nothing should be done in such case.
2970 */
2971 if (!chanctx_conf)
2972 goto unlock;
2973
2974 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2975 ieee80211_recalc_smps_chanctx(local, chanctx);
2976 unlock:
2977 mutex_unlock(&local->chanctx_mtx);
2978}
2979
2980void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2981 int link_id)
2982{
2983 struct ieee80211_local *local = sdata->local;
2984 struct ieee80211_chanctx_conf *chanctx_conf;
2985 struct ieee80211_chanctx *chanctx;
2986 int i;
2987
2988 mutex_lock(&local->chanctx_mtx);
2989
2990 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) {
2991 struct ieee80211_bss_conf *bss_conf;
2992
2993 if (link_id >= 0 && link_id != i)
2994 continue;
2995
2996 rcu_read_lock();
2997 bss_conf = rcu_dereference(sdata->vif.link_conf[i]);
2998 if (!bss_conf) {
2999 rcu_read_unlock();
3000 continue;
3001 }
3002
3003 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf,
3004 lockdep_is_held(&local->chanctx_mtx));
3005 /*
3006 * Since we hold the chanctx_mtx (checked above)
3007 * we can take the chanctx_conf pointer out of the
3008 * RCU critical section, it cannot go away without
3009 * the mutex. Just the way we reached it could - in
3010 * theory - go away, but we don't really care and
3011 * it really shouldn't happen anyway.
3012 */
3013 rcu_read_unlock();
3014
3015 if (!chanctx_conf)
3016 goto unlock;
3017
3018 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx,
3019 conf);
3020 ieee80211_recalc_chanctx_min_def(local, chanctx);
3021 }
3022 unlock:
3023 mutex_unlock(&local->chanctx_mtx);
3024}
3025
3026size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
3027{
3028 size_t pos = offset;
3029
3030 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
3031 pos += 2 + ies[pos + 1];
3032
3033 return pos;
3034}
3035
3036u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3037 u16 cap)
3038{
3039 __le16 tmp;
3040
3041 *pos++ = WLAN_EID_HT_CAPABILITY;
3042 *pos++ = sizeof(struct ieee80211_ht_cap);
3043 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
3044
3045 /* capability flags */
3046 tmp = cpu_to_le16(cap);
3047 memcpy(pos, &tmp, sizeof(u16));
3048 pos += sizeof(u16);
3049
3050 /* AMPDU parameters */
3051 *pos++ = ht_cap->ampdu_factor |
3052 (ht_cap->ampdu_density <<
3053 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
3054
3055 /* MCS set */
3056 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
3057 pos += sizeof(ht_cap->mcs);
3058
3059 /* extended capabilities */
3060 pos += sizeof(__le16);
3061
3062 /* BF capabilities */
3063 pos += sizeof(__le32);
3064
3065 /* antenna selection */
3066 pos += sizeof(u8);
3067
3068 return pos;
3069}
3070
3071u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3072 u32 cap)
3073{
3074 __le32 tmp;
3075
3076 *pos++ = WLAN_EID_VHT_CAPABILITY;
3077 *pos++ = sizeof(struct ieee80211_vht_cap);
3078 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
3079
3080 /* capability flags */
3081 tmp = cpu_to_le32(cap);
3082 memcpy(pos, &tmp, sizeof(u32));
3083 pos += sizeof(u32);
3084
3085 /* VHT MCS set */
3086 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
3087 pos += sizeof(vht_cap->vht_mcs);
3088
3089 return pos;
3090}
3091
3092u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
3093{
3094 const struct ieee80211_sta_he_cap *he_cap;
3095 struct ieee80211_supported_band *sband;
3096 u8 n;
3097
3098 sband = ieee80211_get_sband(sdata);
3099 if (!sband)
3100 return 0;
3101
3102 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3103 if (!he_cap)
3104 return 0;
3105
3106 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
3107 return 2 + 1 +
3108 sizeof(he_cap->he_cap_elem) + n +
3109 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
3110 he_cap->he_cap_elem.phy_cap_info);
3111}
3112
3113u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
3114 const struct ieee80211_sta_he_cap *he_cap,
3115 u8 *end)
3116{
3117 struct ieee80211_he_cap_elem elem;
3118 u8 n;
3119 u8 ie_len;
3120 u8 *orig_pos = pos;
3121
3122 /* Make sure we have place for the IE */
3123 /*
3124 * TODO: the 1 added is because this temporarily is under the EXTENSION
3125 * IE. Get rid of it when it moves.
3126 */
3127 if (!he_cap)
3128 return orig_pos;
3129
3130 /* modify on stack first to calculate 'n' and 'ie_len' correctly */
3131 elem = he_cap->he_cap_elem;
3132
3133 if (disable_flags & IEEE80211_CONN_DISABLE_40MHZ)
3134 elem.phy_cap_info[0] &=
3135 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3136 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
3137
3138 if (disable_flags & IEEE80211_CONN_DISABLE_160MHZ)
3139 elem.phy_cap_info[0] &=
3140 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3141
3142 if (disable_flags & IEEE80211_CONN_DISABLE_80P80MHZ)
3143 elem.phy_cap_info[0] &=
3144 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3145
3146 n = ieee80211_he_mcs_nss_size(&elem);
3147 ie_len = 2 + 1 +
3148 sizeof(he_cap->he_cap_elem) + n +
3149 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
3150 he_cap->he_cap_elem.phy_cap_info);
3151
3152 if ((end - pos) < ie_len)
3153 return orig_pos;
3154
3155 *pos++ = WLAN_EID_EXTENSION;
3156 pos++; /* We'll set the size later below */
3157 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
3158
3159 /* Fixed data */
3160 memcpy(pos, &elem, sizeof(elem));
3161 pos += sizeof(elem);
3162
3163 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
3164 pos += n;
3165
3166 /* Check if PPE Threshold should be present */
3167 if ((he_cap->he_cap_elem.phy_cap_info[6] &
3168 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
3169 goto end;
3170
3171 /*
3172 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
3173 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
3174 */
3175 n = hweight8(he_cap->ppe_thres[0] &
3176 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
3177 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
3178 IEEE80211_PPE_THRES_NSS_POS));
3179
3180 /*
3181 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
3182 * total size.
3183 */
3184 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
3185 n = DIV_ROUND_UP(n, 8);
3186
3187 /* Copy PPE Thresholds */
3188 memcpy(pos, &he_cap->ppe_thres, n);
3189 pos += n;
3190
3191end:
3192 orig_pos[1] = (pos - orig_pos) - 2;
3193 return pos;
3194}
3195
3196void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
3197 enum ieee80211_smps_mode smps_mode,
3198 struct sk_buff *skb)
3199{
3200 struct ieee80211_supported_band *sband;
3201 const struct ieee80211_sband_iftype_data *iftd;
3202 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3203 u8 *pos;
3204 u16 cap;
3205
3206 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
3207 BIT(NL80211_BAND_6GHZ),
3208 IEEE80211_CHAN_NO_HE))
3209 return;
3210
3211 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3212
3213 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
3214 if (!iftd)
3215 return;
3216
3217 /* Check for device HE 6 GHz capability before adding element */
3218 if (!iftd->he_6ghz_capa.capa)
3219 return;
3220
3221 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
3222 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
3223
3224 switch (smps_mode) {
3225 case IEEE80211_SMPS_AUTOMATIC:
3226 case IEEE80211_SMPS_NUM_MODES:
3227 WARN_ON(1);
3228 fallthrough;
3229 case IEEE80211_SMPS_OFF:
3230 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
3231 IEEE80211_HE_6GHZ_CAP_SM_PS);
3232 break;
3233 case IEEE80211_SMPS_STATIC:
3234 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
3235 IEEE80211_HE_6GHZ_CAP_SM_PS);
3236 break;
3237 case IEEE80211_SMPS_DYNAMIC:
3238 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
3239 IEEE80211_HE_6GHZ_CAP_SM_PS);
3240 break;
3241 }
3242
3243 pos = skb_put(skb, 2 + 1 + sizeof(cap));
3244 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3245 pos + 2 + 1 + sizeof(cap));
3246}
3247
3248u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3249 const struct cfg80211_chan_def *chandef,
3250 u16 prot_mode, bool rifs_mode)
3251{
3252 struct ieee80211_ht_operation *ht_oper;
3253 /* Build HT Information */
3254 *pos++ = WLAN_EID_HT_OPERATION;
3255 *pos++ = sizeof(struct ieee80211_ht_operation);
3256 ht_oper = (struct ieee80211_ht_operation *)pos;
3257 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3258 chandef->chan->center_freq);
3259 switch (chandef->width) {
3260 case NL80211_CHAN_WIDTH_160:
3261 case NL80211_CHAN_WIDTH_80P80:
3262 case NL80211_CHAN_WIDTH_80:
3263 case NL80211_CHAN_WIDTH_40:
3264 if (chandef->center_freq1 > chandef->chan->center_freq)
3265 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3266 else
3267 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3268 break;
3269 case NL80211_CHAN_WIDTH_320:
3270 /* HT information element should not be included on 6GHz */
3271 WARN_ON(1);
3272 return pos;
3273 default:
3274 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3275 break;
3276 }
3277 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3278 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3279 chandef->width != NL80211_CHAN_WIDTH_20)
3280 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3281
3282 if (rifs_mode)
3283 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3284
3285 ht_oper->operation_mode = cpu_to_le16(prot_mode);
3286 ht_oper->stbc_param = 0x0000;
3287
3288 /* It seems that Basic MCS set and Supported MCS set
3289 are identical for the first 10 bytes */
3290 memset(&ht_oper->basic_set, 0, 16);
3291 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3292
3293 return pos + sizeof(struct ieee80211_ht_operation);
3294}
3295
3296void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3297 const struct cfg80211_chan_def *chandef)
3298{
3299 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3300 *pos++ = 3; /* IE length */
3301 /* New channel width */
3302 switch (chandef->width) {
3303 case NL80211_CHAN_WIDTH_80:
3304 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3305 break;
3306 case NL80211_CHAN_WIDTH_160:
3307 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3308 break;
3309 case NL80211_CHAN_WIDTH_80P80:
3310 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3311 break;
3312 case NL80211_CHAN_WIDTH_320:
3313 /* The behavior is not defined for 320 MHz channels */
3314 WARN_ON(1);
3315 fallthrough;
3316 default:
3317 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3318 }
3319
3320 /* new center frequency segment 0 */
3321 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3322 /* new center frequency segment 1 */
3323 if (chandef->center_freq2)
3324 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3325 else
3326 *pos++ = 0;
3327}
3328
3329u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3330 const struct cfg80211_chan_def *chandef)
3331{
3332 struct ieee80211_vht_operation *vht_oper;
3333
3334 *pos++ = WLAN_EID_VHT_OPERATION;
3335 *pos++ = sizeof(struct ieee80211_vht_operation);
3336 vht_oper = (struct ieee80211_vht_operation *)pos;
3337 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3338 chandef->center_freq1);
3339 if (chandef->center_freq2)
3340 vht_oper->center_freq_seg1_idx =
3341 ieee80211_frequency_to_channel(chandef->center_freq2);
3342 else
3343 vht_oper->center_freq_seg1_idx = 0x00;
3344
3345 switch (chandef->width) {
3346 case NL80211_CHAN_WIDTH_160:
3347 /*
3348 * Convert 160 MHz channel width to new style as interop
3349 * workaround.
3350 */
3351 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3352 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3353 if (chandef->chan->center_freq < chandef->center_freq1)
3354 vht_oper->center_freq_seg0_idx -= 8;
3355 else
3356 vht_oper->center_freq_seg0_idx += 8;
3357 break;
3358 case NL80211_CHAN_WIDTH_80P80:
3359 /*
3360 * Convert 80+80 MHz channel width to new style as interop
3361 * workaround.
3362 */
3363 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3364 break;
3365 case NL80211_CHAN_WIDTH_80:
3366 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3367 break;
3368 case NL80211_CHAN_WIDTH_320:
3369 /* VHT information element should not be included on 6GHz */
3370 WARN_ON(1);
3371 return pos;
3372 default:
3373 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3374 break;
3375 }
3376
3377 /* don't require special VHT peer rates */
3378 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3379
3380 return pos + sizeof(struct ieee80211_vht_operation);
3381}
3382
3383u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3384{
3385 struct ieee80211_he_operation *he_oper;
3386 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3387 u32 he_oper_params;
3388 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3389
3390 if (chandef->chan->band == NL80211_BAND_6GHZ)
3391 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3392
3393 *pos++ = WLAN_EID_EXTENSION;
3394 *pos++ = ie_len;
3395 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3396
3397 he_oper_params = 0;
3398 he_oper_params |= u32_encode_bits(1023, /* disabled */
3399 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3400 he_oper_params |= u32_encode_bits(1,
3401 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3402 he_oper_params |= u32_encode_bits(1,
3403 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3404 if (chandef->chan->band == NL80211_BAND_6GHZ)
3405 he_oper_params |= u32_encode_bits(1,
3406 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3407
3408 he_oper = (struct ieee80211_he_operation *)pos;
3409 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3410
3411 /* don't require special HE peer rates */
3412 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3413 pos += sizeof(struct ieee80211_he_operation);
3414
3415 if (chandef->chan->band != NL80211_BAND_6GHZ)
3416 goto out;
3417
3418 /* TODO add VHT operational */
3419 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3420 he_6ghz_op->minrate = 6; /* 6 Mbps */
3421 he_6ghz_op->primary =
3422 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3423 he_6ghz_op->ccfs0 =
3424 ieee80211_frequency_to_channel(chandef->center_freq1);
3425 if (chandef->center_freq2)
3426 he_6ghz_op->ccfs1 =
3427 ieee80211_frequency_to_channel(chandef->center_freq2);
3428 else
3429 he_6ghz_op->ccfs1 = 0;
3430
3431 switch (chandef->width) {
3432 case NL80211_CHAN_WIDTH_320:
3433 /*
3434 * TODO: mesh operation is not defined over 6GHz 320 MHz
3435 * channels.
3436 */
3437 WARN_ON(1);
3438 break;
3439 case NL80211_CHAN_WIDTH_160:
3440 /* Convert 160 MHz channel width to new style as interop
3441 * workaround.
3442 */
3443 he_6ghz_op->control =
3444 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3445 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3446 if (chandef->chan->center_freq < chandef->center_freq1)
3447 he_6ghz_op->ccfs0 -= 8;
3448 else
3449 he_6ghz_op->ccfs0 += 8;
3450 fallthrough;
3451 case NL80211_CHAN_WIDTH_80P80:
3452 he_6ghz_op->control =
3453 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3454 break;
3455 case NL80211_CHAN_WIDTH_80:
3456 he_6ghz_op->control =
3457 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3458 break;
3459 case NL80211_CHAN_WIDTH_40:
3460 he_6ghz_op->control =
3461 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3462 break;
3463 default:
3464 he_6ghz_op->control =
3465 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3466 break;
3467 }
3468
3469 pos += sizeof(struct ieee80211_he_6ghz_oper);
3470
3471out:
3472 return pos;
3473}
3474
3475bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3476 struct cfg80211_chan_def *chandef)
3477{
3478 enum nl80211_channel_type channel_type;
3479
3480 if (!ht_oper)
3481 return false;
3482
3483 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3484 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3485 channel_type = NL80211_CHAN_HT20;
3486 break;
3487 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3488 channel_type = NL80211_CHAN_HT40PLUS;
3489 break;
3490 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3491 channel_type = NL80211_CHAN_HT40MINUS;
3492 break;
3493 default:
3494 return false;
3495 }
3496
3497 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3498 return true;
3499}
3500
3501bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3502 const struct ieee80211_vht_operation *oper,
3503 const struct ieee80211_ht_operation *htop,
3504 struct cfg80211_chan_def *chandef)
3505{
3506 struct cfg80211_chan_def new = *chandef;
3507 int cf0, cf1;
3508 int ccfs0, ccfs1, ccfs2;
3509 int ccf0, ccf1;
3510 u32 vht_cap;
3511 bool support_80_80 = false;
3512 bool support_160 = false;
3513 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3514 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3515 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3516 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3517
3518 if (!oper || !htop)
3519 return false;
3520
3521 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3522 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3523 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3524 support_80_80 = ((vht_cap &
3525 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3526 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3527 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3528 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3529 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3530 ccfs0 = oper->center_freq_seg0_idx;
3531 ccfs1 = oper->center_freq_seg1_idx;
3532 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3533 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3534 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3535
3536 ccf0 = ccfs0;
3537
3538 /* if not supported, parse as though we didn't understand it */
3539 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3540 ext_nss_bw_supp = 0;
3541
3542 /*
3543 * Cf. IEEE 802.11 Table 9-250
3544 *
3545 * We really just consider that because it's inefficient to connect
3546 * at a higher bandwidth than we'll actually be able to use.
3547 */
3548 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3549 default:
3550 case 0x00:
3551 ccf1 = 0;
3552 support_160 = false;
3553 support_80_80 = false;
3554 break;
3555 case 0x01:
3556 support_80_80 = false;
3557 fallthrough;
3558 case 0x02:
3559 case 0x03:
3560 ccf1 = ccfs2;
3561 break;
3562 case 0x10:
3563 ccf1 = ccfs1;
3564 break;
3565 case 0x11:
3566 case 0x12:
3567 if (!ccfs1)
3568 ccf1 = ccfs2;
3569 else
3570 ccf1 = ccfs1;
3571 break;
3572 case 0x13:
3573 case 0x20:
3574 case 0x23:
3575 ccf1 = ccfs1;
3576 break;
3577 }
3578
3579 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3580 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3581
3582 switch (oper->chan_width) {
3583 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3584 /* just use HT information directly */
3585 break;
3586 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3587 new.width = NL80211_CHAN_WIDTH_80;
3588 new.center_freq1 = cf0;
3589 /* If needed, adjust based on the newer interop workaround. */
3590 if (ccf1) {
3591 unsigned int diff;
3592
3593 diff = abs(ccf1 - ccf0);
3594 if ((diff == 8) && support_160) {
3595 new.width = NL80211_CHAN_WIDTH_160;
3596 new.center_freq1 = cf1;
3597 } else if ((diff > 8) && support_80_80) {
3598 new.width = NL80211_CHAN_WIDTH_80P80;
3599 new.center_freq2 = cf1;
3600 }
3601 }
3602 break;
3603 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3604 /* deprecated encoding */
3605 new.width = NL80211_CHAN_WIDTH_160;
3606 new.center_freq1 = cf0;
3607 break;
3608 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3609 /* deprecated encoding */
3610 new.width = NL80211_CHAN_WIDTH_80P80;
3611 new.center_freq1 = cf0;
3612 new.center_freq2 = cf1;
3613 break;
3614 default:
3615 return false;
3616 }
3617
3618 if (!cfg80211_chandef_valid(&new))
3619 return false;
3620
3621 *chandef = new;
3622 return true;
3623}
3624
3625void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper,
3626 bool support_160, bool support_320,
3627 struct cfg80211_chan_def *chandef)
3628{
3629 struct ieee80211_eht_operation_info *info = (void *)eht_oper->optional;
3630
3631 chandef->center_freq1 =
3632 ieee80211_channel_to_frequency(info->ccfs0,
3633 chandef->chan->band);
3634
3635 switch (u8_get_bits(info->control,
3636 IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3637 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3638 chandef->width = NL80211_CHAN_WIDTH_20;
3639 break;
3640 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3641 chandef->width = NL80211_CHAN_WIDTH_40;
3642 break;
3643 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3644 chandef->width = NL80211_CHAN_WIDTH_80;
3645 break;
3646 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
3647 if (support_160) {
3648 chandef->width = NL80211_CHAN_WIDTH_160;
3649 chandef->center_freq1 =
3650 ieee80211_channel_to_frequency(info->ccfs1,
3651 chandef->chan->band);
3652 } else {
3653 chandef->width = NL80211_CHAN_WIDTH_80;
3654 }
3655 break;
3656 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
3657 if (support_320) {
3658 chandef->width = NL80211_CHAN_WIDTH_320;
3659 chandef->center_freq1 =
3660 ieee80211_channel_to_frequency(info->ccfs1,
3661 chandef->chan->band);
3662 } else if (support_160) {
3663 chandef->width = NL80211_CHAN_WIDTH_160;
3664 } else {
3665 chandef->width = NL80211_CHAN_WIDTH_80;
3666
3667 if (chandef->center_freq1 > chandef->chan->center_freq)
3668 chandef->center_freq1 -= 40;
3669 else
3670 chandef->center_freq1 += 40;
3671 }
3672 break;
3673 }
3674}
3675
3676bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3677 const struct ieee80211_he_operation *he_oper,
3678 const struct ieee80211_eht_operation *eht_oper,
3679 struct cfg80211_chan_def *chandef)
3680{
3681 struct ieee80211_local *local = sdata->local;
3682 struct ieee80211_supported_band *sband;
3683 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3684 const struct ieee80211_sta_he_cap *he_cap;
3685 const struct ieee80211_sta_eht_cap *eht_cap;
3686 struct cfg80211_chan_def he_chandef = *chandef;
3687 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3688 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3689 bool support_80_80, support_160, support_320;
3690 u8 he_phy_cap, eht_phy_cap;
3691 u32 freq;
3692
3693 if (chandef->chan->band != NL80211_BAND_6GHZ)
3694 return true;
3695
3696 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3697
3698 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3699 if (!he_cap) {
3700 sdata_info(sdata, "Missing iftype sband data/HE cap");
3701 return false;
3702 }
3703
3704 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3705 support_160 =
3706 he_phy_cap &
3707 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3708 support_80_80 =
3709 he_phy_cap &
3710 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3711
3712 if (!he_oper) {
3713 sdata_info(sdata,
3714 "HE is not advertised on (on %d MHz), expect issues\n",
3715 chandef->chan->center_freq);
3716 return false;
3717 }
3718
3719 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
3720 if (!eht_cap) {
3721 sdata_info(sdata, "Missing iftype sband data/EHT cap");
3722 eht_oper = NULL;
3723 }
3724
3725 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3726
3727 if (!he_6ghz_oper) {
3728 sdata_info(sdata,
3729 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3730 chandef->chan->center_freq);
3731 return false;
3732 }
3733
3734 /*
3735 * The EHT operation IE does not contain the primary channel so the
3736 * primary channel frequency should be taken from the 6 GHz operation
3737 * information.
3738 */
3739 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3740 NL80211_BAND_6GHZ);
3741 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3742
3743 switch (u8_get_bits(he_6ghz_oper->control,
3744 IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) {
3745 case IEEE80211_6GHZ_CTRL_REG_LPI_AP:
3746 bss_conf->power_type = IEEE80211_REG_LPI_AP;
3747 break;
3748 case IEEE80211_6GHZ_CTRL_REG_SP_AP:
3749 bss_conf->power_type = IEEE80211_REG_SP_AP;
3750 break;
3751 default:
3752 bss_conf->power_type = IEEE80211_REG_UNSET_AP;
3753 break;
3754 }
3755
3756 if (!eht_oper ||
3757 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) {
3758 switch (u8_get_bits(he_6ghz_oper->control,
3759 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3760 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3761 he_chandef.width = NL80211_CHAN_WIDTH_20;
3762 break;
3763 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3764 he_chandef.width = NL80211_CHAN_WIDTH_40;
3765 break;
3766 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3767 he_chandef.width = NL80211_CHAN_WIDTH_80;
3768 break;
3769 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3770 he_chandef.width = NL80211_CHAN_WIDTH_80;
3771 if (!he_6ghz_oper->ccfs1)
3772 break;
3773 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3774 if (support_160)
3775 he_chandef.width = NL80211_CHAN_WIDTH_160;
3776 } else {
3777 if (support_80_80)
3778 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3779 }
3780 break;
3781 }
3782
3783 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3784 he_chandef.center_freq1 =
3785 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3786 NL80211_BAND_6GHZ);
3787 } else {
3788 he_chandef.center_freq1 =
3789 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3790 NL80211_BAND_6GHZ);
3791 if (support_80_80 || support_160)
3792 he_chandef.center_freq2 =
3793 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3794 NL80211_BAND_6GHZ);
3795 }
3796 } else {
3797 eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0];
3798 support_320 =
3799 eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
3800
3801 ieee80211_chandef_eht_oper(eht_oper, support_160,
3802 support_320, &he_chandef);
3803 }
3804
3805 if (!cfg80211_chandef_valid(&he_chandef)) {
3806 sdata_info(sdata,
3807 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3808 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3809 he_chandef.width,
3810 he_chandef.center_freq1,
3811 he_chandef.center_freq2);
3812 return false;
3813 }
3814
3815 *chandef = he_chandef;
3816
3817 return true;
3818}
3819
3820bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3821 struct cfg80211_chan_def *chandef)
3822{
3823 u32 oper_freq;
3824
3825 if (!oper)
3826 return false;
3827
3828 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3829 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3830 chandef->width = NL80211_CHAN_WIDTH_1;
3831 break;
3832 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3833 chandef->width = NL80211_CHAN_WIDTH_2;
3834 break;
3835 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3836 chandef->width = NL80211_CHAN_WIDTH_4;
3837 break;
3838 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3839 chandef->width = NL80211_CHAN_WIDTH_8;
3840 break;
3841 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3842 chandef->width = NL80211_CHAN_WIDTH_16;
3843 break;
3844 default:
3845 return false;
3846 }
3847
3848 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3849 NL80211_BAND_S1GHZ);
3850 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3851 chandef->freq1_offset = oper_freq % 1000;
3852
3853 return true;
3854}
3855
3856int ieee80211_parse_bitrates(enum nl80211_chan_width width,
3857 const struct ieee80211_supported_band *sband,
3858 const u8 *srates, int srates_len, u32 *rates)
3859{
3860 u32 rate_flags = ieee80211_chanwidth_rate_flags(width);
3861 int shift = ieee80211_chanwidth_get_shift(width);
3862 struct ieee80211_rate *br;
3863 int brate, rate, i, j, count = 0;
3864
3865 *rates = 0;
3866
3867 for (i = 0; i < srates_len; i++) {
3868 rate = srates[i] & 0x7f;
3869
3870 for (j = 0; j < sband->n_bitrates; j++) {
3871 br = &sband->bitrates[j];
3872 if ((rate_flags & br->flags) != rate_flags)
3873 continue;
3874
3875 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3876 if (brate == rate) {
3877 *rates |= BIT(j);
3878 count++;
3879 break;
3880 }
3881 }
3882 }
3883 return count;
3884}
3885
3886int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3887 struct sk_buff *skb, bool need_basic,
3888 enum nl80211_band band)
3889{
3890 struct ieee80211_local *local = sdata->local;
3891 struct ieee80211_supported_band *sband;
3892 int rate, shift;
3893 u8 i, rates, *pos;
3894 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3895 u32 rate_flags;
3896
3897 shift = ieee80211_vif_get_shift(&sdata->vif);
3898 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3899 sband = local->hw.wiphy->bands[band];
3900 rates = 0;
3901 for (i = 0; i < sband->n_bitrates; i++) {
3902 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3903 continue;
3904 rates++;
3905 }
3906 if (rates > 8)
3907 rates = 8;
3908
3909 if (skb_tailroom(skb) < rates + 2)
3910 return -ENOMEM;
3911
3912 pos = skb_put(skb, rates + 2);
3913 *pos++ = WLAN_EID_SUPP_RATES;
3914 *pos++ = rates;
3915 for (i = 0; i < rates; i++) {
3916 u8 basic = 0;
3917 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3918 continue;
3919
3920 if (need_basic && basic_rates & BIT(i))
3921 basic = 0x80;
3922 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3923 5 * (1 << shift));
3924 *pos++ = basic | (u8) rate;
3925 }
3926
3927 return 0;
3928}
3929
3930int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3931 struct sk_buff *skb, bool need_basic,
3932 enum nl80211_band band)
3933{
3934 struct ieee80211_local *local = sdata->local;
3935 struct ieee80211_supported_band *sband;
3936 int rate, shift;
3937 u8 i, exrates, *pos;
3938 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3939 u32 rate_flags;
3940
3941 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3942 shift = ieee80211_vif_get_shift(&sdata->vif);
3943
3944 sband = local->hw.wiphy->bands[band];
3945 exrates = 0;
3946 for (i = 0; i < sband->n_bitrates; i++) {
3947 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3948 continue;
3949 exrates++;
3950 }
3951
3952 if (exrates > 8)
3953 exrates -= 8;
3954 else
3955 exrates = 0;
3956
3957 if (skb_tailroom(skb) < exrates + 2)
3958 return -ENOMEM;
3959
3960 if (exrates) {
3961 pos = skb_put(skb, exrates + 2);
3962 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3963 *pos++ = exrates;
3964 for (i = 8; i < sband->n_bitrates; i++) {
3965 u8 basic = 0;
3966 if ((rate_flags & sband->bitrates[i].flags)
3967 != rate_flags)
3968 continue;
3969 if (need_basic && basic_rates & BIT(i))
3970 basic = 0x80;
3971 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3972 5 * (1 << shift));
3973 *pos++ = basic | (u8) rate;
3974 }
3975 }
3976 return 0;
3977}
3978
3979int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3980{
3981 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3982
3983 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3984 return 0;
3985
3986 return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal);
3987}
3988EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3989
3990u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3991{
3992 if (!mcs)
3993 return 1;
3994
3995 /* TODO: consider rx_highest */
3996
3997 if (mcs->rx_mask[3])
3998 return 4;
3999 if (mcs->rx_mask[2])
4000 return 3;
4001 if (mcs->rx_mask[1])
4002 return 2;
4003 return 1;
4004}
4005
4006/**
4007 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
4008 * @local: mac80211 hw info struct
4009 * @status: RX status
4010 * @mpdu_len: total MPDU length (including FCS)
4011 * @mpdu_offset: offset into MPDU to calculate timestamp at
4012 *
4013 * This function calculates the RX timestamp at the given MPDU offset, taking
4014 * into account what the RX timestamp was. An offset of 0 will just normalize
4015 * the timestamp to TSF at beginning of MPDU reception.
4016 */
4017u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
4018 struct ieee80211_rx_status *status,
4019 unsigned int mpdu_len,
4020 unsigned int mpdu_offset)
4021{
4022 u64 ts = status->mactime;
4023 struct rate_info ri;
4024 u16 rate;
4025 u8 n_ltf;
4026
4027 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
4028 return 0;
4029
4030 memset(&ri, 0, sizeof(ri));
4031
4032 ri.bw = status->bw;
4033
4034 /* Fill cfg80211 rate info */
4035 switch (status->encoding) {
4036 case RX_ENC_HE:
4037 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
4038 ri.mcs = status->rate_idx;
4039 ri.nss = status->nss;
4040 ri.he_ru_alloc = status->he_ru;
4041 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
4042 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
4043
4044 /*
4045 * See P802.11ax_D6.0, section 27.3.4 for
4046 * VHT PPDU format.
4047 */
4048 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
4049 mpdu_offset += 2;
4050 ts += 36;
4051
4052 /*
4053 * TODO:
4054 * For HE MU PPDU, add the HE-SIG-B.
4055 * For HE ER PPDU, add 8us for the HE-SIG-A.
4056 * For HE TB PPDU, add 4us for the HE-STF.
4057 * Add the HE-LTF durations - variable.
4058 */
4059 }
4060
4061 break;
4062 case RX_ENC_HT:
4063 ri.mcs = status->rate_idx;
4064 ri.flags |= RATE_INFO_FLAGS_MCS;
4065 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
4066 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
4067
4068 /*
4069 * See P802.11REVmd_D3.0, section 19.3.2 for
4070 * HT PPDU format.
4071 */
4072 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
4073 mpdu_offset += 2;
4074 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
4075 ts += 24;
4076 else
4077 ts += 32;
4078
4079 /*
4080 * Add Data HT-LTFs per streams
4081 * TODO: add Extension HT-LTFs, 4us per LTF
4082 */
4083 n_ltf = ((ri.mcs >> 3) & 3) + 1;
4084 n_ltf = n_ltf == 3 ? 4 : n_ltf;
4085 ts += n_ltf * 4;
4086 }
4087
4088 break;
4089 case RX_ENC_VHT:
4090 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
4091 ri.mcs = status->rate_idx;
4092 ri.nss = status->nss;
4093 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
4094 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
4095
4096 /*
4097 * See P802.11REVmd_D3.0, section 21.3.2 for
4098 * VHT PPDU format.
4099 */
4100 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
4101 mpdu_offset += 2;
4102 ts += 36;
4103
4104 /*
4105 * Add VHT-LTFs per streams
4106 */
4107 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
4108 ri.nss + 1 : ri.nss;
4109 ts += 4 * n_ltf;
4110 }
4111
4112 break;
4113 default:
4114 WARN_ON(1);
4115 fallthrough;
4116 case RX_ENC_LEGACY: {
4117 struct ieee80211_supported_band *sband;
4118 int shift = 0;
4119 int bitrate;
4120
4121 switch (status->bw) {
4122 case RATE_INFO_BW_10:
4123 shift = 1;
4124 break;
4125 case RATE_INFO_BW_5:
4126 shift = 2;
4127 break;
4128 }
4129
4130 sband = local->hw.wiphy->bands[status->band];
4131 bitrate = sband->bitrates[status->rate_idx].bitrate;
4132 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
4133
4134 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
4135 if (status->band == NL80211_BAND_5GHZ) {
4136 ts += 20 << shift;
4137 mpdu_offset += 2;
4138 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
4139 ts += 96;
4140 } else {
4141 ts += 192;
4142 }
4143 }
4144 break;
4145 }
4146 }
4147
4148 rate = cfg80211_calculate_bitrate(&ri);
4149 if (WARN_ONCE(!rate,
4150 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
4151 (unsigned long long)status->flag, status->rate_idx,
4152 status->nss))
4153 return 0;
4154
4155 /* rewind from end of MPDU */
4156 if (status->flag & RX_FLAG_MACTIME_END)
4157 ts -= mpdu_len * 8 * 10 / rate;
4158
4159 ts += mpdu_offset * 8 * 10 / rate;
4160
4161 return ts;
4162}
4163
4164void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
4165{
4166 struct ieee80211_sub_if_data *sdata;
4167 struct cfg80211_chan_def chandef;
4168
4169 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
4170 lockdep_assert_wiphy(local->hw.wiphy);
4171
4172 mutex_lock(&local->mtx);
4173 list_for_each_entry(sdata, &local->interfaces, list) {
4174 /* it might be waiting for the local->mtx, but then
4175 * by the time it gets it, sdata->wdev.cac_started
4176 * will no longer be true
4177 */
4178 cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work);
4179
4180 if (sdata->wdev.cac_started) {
4181 chandef = sdata->vif.bss_conf.chandef;
4182 ieee80211_link_release_channel(&sdata->deflink);
4183 cfg80211_cac_event(sdata->dev,
4184 &chandef,
4185 NL80211_RADAR_CAC_ABORTED,
4186 GFP_KERNEL);
4187 }
4188 }
4189 mutex_unlock(&local->mtx);
4190}
4191
4192void ieee80211_dfs_radar_detected_work(struct work_struct *work)
4193{
4194 struct ieee80211_local *local =
4195 container_of(work, struct ieee80211_local, radar_detected_work);
4196 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
4197 struct ieee80211_chanctx *ctx;
4198 int num_chanctx = 0;
4199
4200 mutex_lock(&local->chanctx_mtx);
4201 list_for_each_entry(ctx, &local->chanctx_list, list) {
4202 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
4203 continue;
4204
4205 num_chanctx++;
4206 chandef = ctx->conf.def;
4207 }
4208 mutex_unlock(&local->chanctx_mtx);
4209
4210 wiphy_lock(local->hw.wiphy);
4211 ieee80211_dfs_cac_cancel(local);
4212 wiphy_unlock(local->hw.wiphy);
4213
4214 if (num_chanctx > 1)
4215 /* XXX: multi-channel is not supported yet */
4216 WARN_ON(1);
4217 else
4218 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
4219}
4220
4221void ieee80211_radar_detected(struct ieee80211_hw *hw)
4222{
4223 struct ieee80211_local *local = hw_to_local(hw);
4224
4225 trace_api_radar_detected(local);
4226
4227 schedule_work(&local->radar_detected_work);
4228}
4229EXPORT_SYMBOL(ieee80211_radar_detected);
4230
4231ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
4232{
4233 ieee80211_conn_flags_t ret;
4234 int tmp;
4235
4236 switch (c->width) {
4237 case NL80211_CHAN_WIDTH_20:
4238 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4239 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4240 break;
4241 case NL80211_CHAN_WIDTH_40:
4242 c->width = NL80211_CHAN_WIDTH_20;
4243 c->center_freq1 = c->chan->center_freq;
4244 ret = IEEE80211_CONN_DISABLE_40MHZ |
4245 IEEE80211_CONN_DISABLE_VHT;
4246 break;
4247 case NL80211_CHAN_WIDTH_80:
4248 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
4249 /* n_P40 */
4250 tmp /= 2;
4251 /* freq_P40 */
4252 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
4253 c->width = NL80211_CHAN_WIDTH_40;
4254 ret = IEEE80211_CONN_DISABLE_VHT;
4255 break;
4256 case NL80211_CHAN_WIDTH_80P80:
4257 c->center_freq2 = 0;
4258 c->width = NL80211_CHAN_WIDTH_80;
4259 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4260 IEEE80211_CONN_DISABLE_160MHZ;
4261 break;
4262 case NL80211_CHAN_WIDTH_160:
4263 /* n_P20 */
4264 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
4265 /* n_P80 */
4266 tmp /= 4;
4267 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
4268 c->width = NL80211_CHAN_WIDTH_80;
4269 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4270 IEEE80211_CONN_DISABLE_160MHZ;
4271 break;
4272 case NL80211_CHAN_WIDTH_320:
4273 /* n_P20 */
4274 tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
4275 /* n_P160 */
4276 tmp /= 8;
4277 c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
4278 c->width = NL80211_CHAN_WIDTH_160;
4279 ret = IEEE80211_CONN_DISABLE_320MHZ;
4280 break;
4281 default:
4282 case NL80211_CHAN_WIDTH_20_NOHT:
4283 WARN_ON_ONCE(1);
4284 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4285 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4286 break;
4287 case NL80211_CHAN_WIDTH_1:
4288 case NL80211_CHAN_WIDTH_2:
4289 case NL80211_CHAN_WIDTH_4:
4290 case NL80211_CHAN_WIDTH_8:
4291 case NL80211_CHAN_WIDTH_16:
4292 case NL80211_CHAN_WIDTH_5:
4293 case NL80211_CHAN_WIDTH_10:
4294 WARN_ON_ONCE(1);
4295 /* keep c->width */
4296 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4297 break;
4298 }
4299
4300 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
4301
4302 return ret;
4303}
4304
4305/*
4306 * Returns true if smps_mode_new is strictly more restrictive than
4307 * smps_mode_old.
4308 */
4309bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
4310 enum ieee80211_smps_mode smps_mode_new)
4311{
4312 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
4313 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
4314 return false;
4315
4316 switch (smps_mode_old) {
4317 case IEEE80211_SMPS_STATIC:
4318 return false;
4319 case IEEE80211_SMPS_DYNAMIC:
4320 return smps_mode_new == IEEE80211_SMPS_STATIC;
4321 case IEEE80211_SMPS_OFF:
4322 return smps_mode_new != IEEE80211_SMPS_OFF;
4323 default:
4324 WARN_ON(1);
4325 }
4326
4327 return false;
4328}
4329
4330int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
4331 struct cfg80211_csa_settings *csa_settings)
4332{
4333 struct sk_buff *skb;
4334 struct ieee80211_mgmt *mgmt;
4335 struct ieee80211_local *local = sdata->local;
4336 int freq;
4337 int hdr_len = offsetofend(struct ieee80211_mgmt,
4338 u.action.u.chan_switch);
4339 u8 *pos;
4340
4341 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
4342 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
4343 return -EOPNOTSUPP;
4344
4345 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
4346 5 + /* channel switch announcement element */
4347 3 + /* secondary channel offset element */
4348 5 + /* wide bandwidth channel switch announcement */
4349 8); /* mesh channel switch parameters element */
4350 if (!skb)
4351 return -ENOMEM;
4352
4353 skb_reserve(skb, local->tx_headroom);
4354 mgmt = skb_put_zero(skb, hdr_len);
4355 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4356 IEEE80211_STYPE_ACTION);
4357
4358 eth_broadcast_addr(mgmt->da);
4359 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4360 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4361 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4362 } else {
4363 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4364 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4365 }
4366 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4367 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4368 pos = skb_put(skb, 5);
4369 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
4370 *pos++ = 3; /* IE length */
4371 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
4372 freq = csa_settings->chandef.chan->center_freq;
4373 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
4374 *pos++ = csa_settings->count; /* count */
4375
4376 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4377 enum nl80211_channel_type ch_type;
4378
4379 skb_put(skb, 3);
4380 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
4381 *pos++ = 1; /* IE length */
4382 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4383 if (ch_type == NL80211_CHAN_HT40PLUS)
4384 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4385 else
4386 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4387 }
4388
4389 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4390 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4391
4392 skb_put(skb, 8);
4393 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
4394 *pos++ = 6; /* IE length */
4395 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
4396 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
4397 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4398 *pos++ |= csa_settings->block_tx ?
4399 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4400 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4401 pos += 2;
4402 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4403 pos += 2;
4404 }
4405
4406 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4407 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4408 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4409 skb_put(skb, 5);
4410 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4411 }
4412
4413 ieee80211_tx_skb(sdata, skb);
4414 return 0;
4415}
4416
4417static bool
4418ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4419{
4420 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4421 int skip;
4422
4423 if (end > 0)
4424 return false;
4425
4426 /* One shot NOA */
4427 if (data->count[i] == 1)
4428 return false;
4429
4430 if (data->desc[i].interval == 0)
4431 return false;
4432
4433 /* End time is in the past, check for repetitions */
4434 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4435 if (data->count[i] < 255) {
4436 if (data->count[i] <= skip) {
4437 data->count[i] = 0;
4438 return false;
4439 }
4440
4441 data->count[i] -= skip;
4442 }
4443
4444 data->desc[i].start += skip * data->desc[i].interval;
4445
4446 return true;
4447}
4448
4449static bool
4450ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4451 s32 *offset)
4452{
4453 bool ret = false;
4454 int i;
4455
4456 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4457 s32 cur;
4458
4459 if (!data->count[i])
4460 continue;
4461
4462 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4463 ret = true;
4464
4465 cur = data->desc[i].start - tsf;
4466 if (cur > *offset)
4467 continue;
4468
4469 cur = data->desc[i].start + data->desc[i].duration - tsf;
4470 if (cur > *offset)
4471 *offset = cur;
4472 }
4473
4474 return ret;
4475}
4476
4477static u32
4478ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4479{
4480 s32 offset = 0;
4481 int tries = 0;
4482 /*
4483 * arbitrary limit, used to avoid infinite loops when combined NoA
4484 * descriptors cover the full time period.
4485 */
4486 int max_tries = 5;
4487
4488 ieee80211_extend_absent_time(data, tsf, &offset);
4489 do {
4490 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4491 break;
4492
4493 tries++;
4494 } while (tries < max_tries);
4495
4496 return offset;
4497}
4498
4499void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4500{
4501 u32 next_offset = BIT(31) - 1;
4502 int i;
4503
4504 data->absent = 0;
4505 data->has_next_tsf = false;
4506 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4507 s32 start;
4508
4509 if (!data->count[i])
4510 continue;
4511
4512 ieee80211_extend_noa_desc(data, tsf, i);
4513 start = data->desc[i].start - tsf;
4514 if (start <= 0)
4515 data->absent |= BIT(i);
4516
4517 if (next_offset > start)
4518 next_offset = start;
4519
4520 data->has_next_tsf = true;
4521 }
4522
4523 if (data->absent)
4524 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4525
4526 data->next_tsf = tsf + next_offset;
4527}
4528EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4529
4530int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4531 struct ieee80211_noa_data *data, u32 tsf)
4532{
4533 int ret = 0;
4534 int i;
4535
4536 memset(data, 0, sizeof(*data));
4537
4538 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4539 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4540
4541 if (!desc->count || !desc->duration)
4542 continue;
4543
4544 data->count[i] = desc->count;
4545 data->desc[i].start = le32_to_cpu(desc->start_time);
4546 data->desc[i].duration = le32_to_cpu(desc->duration);
4547 data->desc[i].interval = le32_to_cpu(desc->interval);
4548
4549 if (data->count[i] > 1 &&
4550 data->desc[i].interval < data->desc[i].duration)
4551 continue;
4552
4553 ieee80211_extend_noa_desc(data, tsf, i);
4554 ret++;
4555 }
4556
4557 if (ret)
4558 ieee80211_update_p2p_noa(data, tsf);
4559
4560 return ret;
4561}
4562EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4563
4564void ieee80211_recalc_dtim(struct ieee80211_local *local,
4565 struct ieee80211_sub_if_data *sdata)
4566{
4567 u64 tsf = drv_get_tsf(local, sdata);
4568 u64 dtim_count = 0;
4569 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4570 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4571 struct ps_data *ps;
4572 u8 bcns_from_dtim;
4573
4574 if (tsf == -1ULL || !beacon_int || !dtim_period)
4575 return;
4576
4577 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4578 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4579 if (!sdata->bss)
4580 return;
4581
4582 ps = &sdata->bss->ps;
4583 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4584 ps = &sdata->u.mesh.ps;
4585 } else {
4586 return;
4587 }
4588
4589 /*
4590 * actually finds last dtim_count, mac80211 will update in
4591 * __beacon_add_tim().
4592 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4593 */
4594 do_div(tsf, beacon_int);
4595 bcns_from_dtim = do_div(tsf, dtim_period);
4596 /* just had a DTIM */
4597 if (!bcns_from_dtim)
4598 dtim_count = 0;
4599 else
4600 dtim_count = dtim_period - bcns_from_dtim;
4601
4602 ps->dtim_count = dtim_count;
4603}
4604
4605static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4606 struct ieee80211_chanctx *ctx)
4607{
4608 struct ieee80211_link_data *link;
4609 u8 radar_detect = 0;
4610
4611 lockdep_assert_held(&local->chanctx_mtx);
4612
4613 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4614 return 0;
4615
4616 list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list)
4617 if (link->reserved_radar_required)
4618 radar_detect |= BIT(link->reserved_chandef.width);
4619
4620 /*
4621 * An in-place reservation context should not have any assigned vifs
4622 * until it replaces the other context.
4623 */
4624 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4625 !list_empty(&ctx->assigned_links));
4626
4627 list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) {
4628 if (!link->radar_required)
4629 continue;
4630
4631 radar_detect |=
4632 BIT(link->conf->chandef.width);
4633 }
4634
4635 return radar_detect;
4636}
4637
4638int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4639 const struct cfg80211_chan_def *chandef,
4640 enum ieee80211_chanctx_mode chanmode,
4641 u8 radar_detect)
4642{
4643 struct ieee80211_local *local = sdata->local;
4644 struct ieee80211_sub_if_data *sdata_iter;
4645 enum nl80211_iftype iftype = sdata->wdev.iftype;
4646 struct ieee80211_chanctx *ctx;
4647 int total = 1;
4648 struct iface_combination_params params = {
4649 .radar_detect = radar_detect,
4650 };
4651
4652 lockdep_assert_held(&local->chanctx_mtx);
4653
4654 if (WARN_ON(hweight32(radar_detect) > 1))
4655 return -EINVAL;
4656
4657 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4658 !chandef->chan))
4659 return -EINVAL;
4660
4661 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4662 return -EINVAL;
4663
4664 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4665 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4666 /*
4667 * always passing this is harmless, since it'll be the
4668 * same value that cfg80211 finds if it finds the same
4669 * interface ... and that's always allowed
4670 */
4671 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4672 }
4673
4674 /* Always allow software iftypes */
4675 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4676 if (radar_detect)
4677 return -EINVAL;
4678 return 0;
4679 }
4680
4681 if (chandef)
4682 params.num_different_channels = 1;
4683
4684 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4685 params.iftype_num[iftype] = 1;
4686
4687 list_for_each_entry(ctx, &local->chanctx_list, list) {
4688 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4689 continue;
4690 params.radar_detect |=
4691 ieee80211_chanctx_radar_detect(local, ctx);
4692 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4693 params.num_different_channels++;
4694 continue;
4695 }
4696 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4697 cfg80211_chandef_compatible(chandef,
4698 &ctx->conf.def))
4699 continue;
4700 params.num_different_channels++;
4701 }
4702
4703 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4704 struct wireless_dev *wdev_iter;
4705
4706 wdev_iter = &sdata_iter->wdev;
4707
4708 if (sdata_iter == sdata ||
4709 !ieee80211_sdata_running(sdata_iter) ||
4710 cfg80211_iftype_allowed(local->hw.wiphy,
4711 wdev_iter->iftype, 0, 1))
4712 continue;
4713
4714 params.iftype_num[wdev_iter->iftype]++;
4715 total++;
4716 }
4717
4718 if (total == 1 && !params.radar_detect)
4719 return 0;
4720
4721 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4722}
4723
4724static void
4725ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4726 void *data)
4727{
4728 u32 *max_num_different_channels = data;
4729
4730 *max_num_different_channels = max(*max_num_different_channels,
4731 c->num_different_channels);
4732}
4733
4734int ieee80211_max_num_channels(struct ieee80211_local *local)
4735{
4736 struct ieee80211_sub_if_data *sdata;
4737 struct ieee80211_chanctx *ctx;
4738 u32 max_num_different_channels = 1;
4739 int err;
4740 struct iface_combination_params params = {0};
4741
4742 lockdep_assert_held(&local->chanctx_mtx);
4743
4744 list_for_each_entry(ctx, &local->chanctx_list, list) {
4745 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4746 continue;
4747
4748 params.num_different_channels++;
4749
4750 params.radar_detect |=
4751 ieee80211_chanctx_radar_detect(local, ctx);
4752 }
4753
4754 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4755 params.iftype_num[sdata->wdev.iftype]++;
4756
4757 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4758 ieee80211_iter_max_chans,
4759 &max_num_different_channels);
4760 if (err < 0)
4761 return err;
4762
4763 return max_num_different_channels;
4764}
4765
4766void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4767 struct ieee80211_sta_s1g_cap *caps,
4768 struct sk_buff *skb)
4769{
4770 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4771 struct ieee80211_s1g_cap s1g_capab;
4772 u8 *pos;
4773 int i;
4774
4775 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4776 return;
4777
4778 if (!caps->s1g)
4779 return;
4780
4781 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4782 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4783
4784 /* override the capability info */
4785 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4786 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4787
4788 s1g_capab.capab_info[i] &= ~mask;
4789 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4790 }
4791
4792 /* then MCS and NSS set */
4793 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4794 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4795
4796 s1g_capab.supp_mcs_nss[i] &= ~mask;
4797 s1g_capab.supp_mcs_nss[i] |=
4798 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4799 }
4800
4801 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4802 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4803 *pos++ = sizeof(s1g_capab);
4804
4805 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4806}
4807
4808void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4809 struct sk_buff *skb)
4810{
4811 u8 *pos = skb_put(skb, 3);
4812
4813 *pos++ = WLAN_EID_AID_REQUEST;
4814 *pos++ = 1;
4815 *pos++ = 0;
4816}
4817
4818u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4819{
4820 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4821 *buf++ = 7; /* len */
4822 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4823 *buf++ = 0x50;
4824 *buf++ = 0xf2;
4825 *buf++ = 2; /* WME */
4826 *buf++ = 0; /* WME info */
4827 *buf++ = 1; /* WME ver */
4828 *buf++ = qosinfo; /* U-APSD no in use */
4829
4830 return buf;
4831}
4832
4833void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4834 unsigned long *frame_cnt,
4835 unsigned long *byte_cnt)
4836{
4837 struct txq_info *txqi = to_txq_info(txq);
4838 u32 frag_cnt = 0, frag_bytes = 0;
4839 struct sk_buff *skb;
4840
4841 skb_queue_walk(&txqi->frags, skb) {
4842 frag_cnt++;
4843 frag_bytes += skb->len;
4844 }
4845
4846 if (frame_cnt)
4847 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4848
4849 if (byte_cnt)
4850 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4851}
4852EXPORT_SYMBOL(ieee80211_txq_get_depth);
4853
4854const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4855 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4856 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4857 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4858 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4859};
4860
4861u16 ieee80211_encode_usf(int listen_interval)
4862{
4863 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4864 u16 ui, usf = 0;
4865
4866 /* find greatest USF */
4867 while (usf < IEEE80211_MAX_USF) {
4868 if (listen_interval % listen_int_usf[usf + 1])
4869 break;
4870 usf += 1;
4871 }
4872 ui = listen_interval / listen_int_usf[usf];
4873
4874 /* error if there is a remainder. Should've been checked by user */
4875 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4876 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4877 FIELD_PREP(LISTEN_INT_UI, ui);
4878
4879 return (u16) listen_interval;
4880}
4881
4882u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
4883{
4884 const struct ieee80211_sta_he_cap *he_cap;
4885 const struct ieee80211_sta_eht_cap *eht_cap;
4886 struct ieee80211_supported_band *sband;
4887 bool is_ap;
4888 u8 n;
4889
4890 sband = ieee80211_get_sband(sdata);
4891 if (!sband)
4892 return 0;
4893
4894 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
4895 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
4896 if (!he_cap || !eht_cap)
4897 return 0;
4898
4899 is_ap = iftype == NL80211_IFTYPE_AP ||
4900 iftype == NL80211_IFTYPE_P2P_GO;
4901
4902 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4903 &eht_cap->eht_cap_elem,
4904 is_ap);
4905 return 2 + 1 +
4906 sizeof(he_cap->he_cap_elem) + n +
4907 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4908 eht_cap->eht_cap_elem.phy_cap_info);
4909 return 0;
4910}
4911
4912u8 *ieee80211_ie_build_eht_cap(u8 *pos,
4913 const struct ieee80211_sta_he_cap *he_cap,
4914 const struct ieee80211_sta_eht_cap *eht_cap,
4915 u8 *end,
4916 bool for_ap)
4917{
4918 u8 mcs_nss_len, ppet_len;
4919 u8 ie_len;
4920 u8 *orig_pos = pos;
4921
4922 /* Make sure we have place for the IE */
4923 if (!he_cap || !eht_cap)
4924 return orig_pos;
4925
4926 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4927 &eht_cap->eht_cap_elem,
4928 for_ap);
4929 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4930 eht_cap->eht_cap_elem.phy_cap_info);
4931
4932 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
4933 if ((end - pos) < ie_len)
4934 return orig_pos;
4935
4936 *pos++ = WLAN_EID_EXTENSION;
4937 *pos++ = ie_len - 2;
4938 *pos++ = WLAN_EID_EXT_EHT_CAPABILITY;
4939
4940 /* Fixed data */
4941 memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem));
4942 pos += sizeof(eht_cap->eht_cap_elem);
4943
4944 memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
4945 pos += mcs_nss_len;
4946
4947 if (ppet_len) {
4948 memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len);
4949 pos += ppet_len;
4950 }
4951
4952 return pos;
4953}
4954
4955void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos)
4956{
4957 unsigned int elem_len;
4958
4959 if (!len_pos)
4960 return;
4961
4962 elem_len = skb->data + skb->len - len_pos - 1;
4963
4964 while (elem_len > 255) {
4965 /* this one is 255 */
4966 *len_pos = 255;
4967 /* remaining data gets smaller */
4968 elem_len -= 255;
4969 /* make space for the fragment ID/len in SKB */
4970 skb_put(skb, 2);
4971 /* shift back the remaining data to place fragment ID/len */
4972 memmove(len_pos + 255 + 3, len_pos + 255 + 1, elem_len);
4973 /* place the fragment ID */
4974 len_pos += 255 + 1;
4975 *len_pos = WLAN_EID_FRAGMENT;
4976 /* and point to fragment length to update later */
4977 len_pos++;
4978 }
4979
4980 *len_pos = elem_len;
4981}