Loading...
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) 2018-2020 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
48void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
49{
50 struct sk_buff *skb;
51 struct ieee80211_hdr *hdr;
52
53 skb_queue_walk(&tx->skbs, skb) {
54 hdr = (struct ieee80211_hdr *) skb->data;
55 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
56 }
57}
58
59int ieee80211_frame_duration(enum nl80211_band band, size_t len,
60 int rate, int erp, int short_preamble,
61 int shift)
62{
63 int dur;
64
65 /* calculate duration (in microseconds, rounded up to next higher
66 * integer if it includes a fractional microsecond) to send frame of
67 * len bytes (does not include FCS) at the given rate. Duration will
68 * also include SIFS.
69 *
70 * rate is in 100 kbps, so divident is multiplied by 10 in the
71 * DIV_ROUND_UP() operations.
72 *
73 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
74 * is assumed to be 0 otherwise.
75 */
76
77 if (band == NL80211_BAND_5GHZ || erp) {
78 /*
79 * OFDM:
80 *
81 * N_DBPS = DATARATE x 4
82 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
83 * (16 = SIGNAL time, 6 = tail bits)
84 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
85 *
86 * T_SYM = 4 usec
87 * 802.11a - 18.5.2: aSIFSTime = 16 usec
88 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
89 * signal ext = 6 usec
90 */
91 dur = 16; /* SIFS + signal ext */
92 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
93 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
94
95 /* IEEE 802.11-2012 18.3.2.4: all values above are:
96 * * times 4 for 5 MHz
97 * * times 2 for 10 MHz
98 */
99 dur *= 1 << shift;
100
101 /* rates should already consider the channel bandwidth,
102 * don't apply divisor again.
103 */
104 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
105 4 * rate); /* T_SYM x N_SYM */
106 } else {
107 /*
108 * 802.11b or 802.11g with 802.11b compatibility:
109 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
110 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
111 *
112 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
113 * aSIFSTime = 10 usec
114 * aPreambleLength = 144 usec or 72 usec with short preamble
115 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
116 */
117 dur = 10; /* aSIFSTime = 10 usec */
118 dur += short_preamble ? (72 + 24) : (144 + 48);
119
120 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
121 }
122
123 return dur;
124}
125
126/* Exported duration function for driver use */
127__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
128 struct ieee80211_vif *vif,
129 enum nl80211_band band,
130 size_t frame_len,
131 struct ieee80211_rate *rate)
132{
133 struct ieee80211_sub_if_data *sdata;
134 u16 dur;
135 int erp, shift = 0;
136 bool short_preamble = false;
137
138 erp = 0;
139 if (vif) {
140 sdata = vif_to_sdata(vif);
141 short_preamble = sdata->vif.bss_conf.use_short_preamble;
142 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
143 erp = rate->flags & IEEE80211_RATE_ERP_G;
144 shift = ieee80211_vif_get_shift(vif);
145 }
146
147 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
148 short_preamble, shift);
149
150 return cpu_to_le16(dur);
151}
152EXPORT_SYMBOL(ieee80211_generic_frame_duration);
153
154__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
155 struct ieee80211_vif *vif, size_t frame_len,
156 const struct ieee80211_tx_info *frame_txctl)
157{
158 struct ieee80211_local *local = hw_to_local(hw);
159 struct ieee80211_rate *rate;
160 struct ieee80211_sub_if_data *sdata;
161 bool short_preamble;
162 int erp, shift = 0, bitrate;
163 u16 dur;
164 struct ieee80211_supported_band *sband;
165
166 sband = local->hw.wiphy->bands[frame_txctl->band];
167
168 short_preamble = false;
169
170 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
171
172 erp = 0;
173 if (vif) {
174 sdata = vif_to_sdata(vif);
175 short_preamble = sdata->vif.bss_conf.use_short_preamble;
176 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
177 erp = rate->flags & IEEE80211_RATE_ERP_G;
178 shift = ieee80211_vif_get_shift(vif);
179 }
180
181 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
182
183 /* CTS duration */
184 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
185 erp, short_preamble, shift);
186 /* Data frame duration */
187 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
188 erp, short_preamble, shift);
189 /* ACK duration */
190 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
191 erp, short_preamble, shift);
192
193 return cpu_to_le16(dur);
194}
195EXPORT_SYMBOL(ieee80211_rts_duration);
196
197__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
198 struct ieee80211_vif *vif,
199 size_t frame_len,
200 const struct ieee80211_tx_info *frame_txctl)
201{
202 struct ieee80211_local *local = hw_to_local(hw);
203 struct ieee80211_rate *rate;
204 struct ieee80211_sub_if_data *sdata;
205 bool short_preamble;
206 int erp, shift = 0, bitrate;
207 u16 dur;
208 struct ieee80211_supported_band *sband;
209
210 sband = local->hw.wiphy->bands[frame_txctl->band];
211
212 short_preamble = false;
213
214 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
215 erp = 0;
216 if (vif) {
217 sdata = vif_to_sdata(vif);
218 short_preamble = sdata->vif.bss_conf.use_short_preamble;
219 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
220 erp = rate->flags & IEEE80211_RATE_ERP_G;
221 shift = ieee80211_vif_get_shift(vif);
222 }
223
224 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
225
226 /* Data frame duration */
227 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
228 erp, short_preamble, shift);
229 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
230 /* ACK duration */
231 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
232 erp, short_preamble, shift);
233 }
234
235 return cpu_to_le16(dur);
236}
237EXPORT_SYMBOL(ieee80211_ctstoself_duration);
238
239static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
240{
241 struct ieee80211_local *local = sdata->local;
242 struct ieee80211_vif *vif = &sdata->vif;
243 struct fq *fq = &local->fq;
244 struct ps_data *ps = NULL;
245 struct txq_info *txqi;
246 struct sta_info *sta;
247 int i;
248
249 local_bh_disable();
250 spin_lock(&fq->lock);
251
252 if (sdata->vif.type == NL80211_IFTYPE_AP)
253 ps = &sdata->bss->ps;
254
255 sdata->vif.txqs_stopped[ac] = false;
256
257 list_for_each_entry_rcu(sta, &local->sta_list, list) {
258 if (sdata != sta->sdata)
259 continue;
260
261 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
262 struct ieee80211_txq *txq = sta->sta.txq[i];
263
264 if (!txq)
265 continue;
266
267 txqi = to_txq_info(txq);
268
269 if (ac != txq->ac)
270 continue;
271
272 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
273 &txqi->flags))
274 continue;
275
276 spin_unlock(&fq->lock);
277 drv_wake_tx_queue(local, txqi);
278 spin_lock(&fq->lock);
279 }
280 }
281
282 if (!vif->txq)
283 goto out;
284
285 txqi = to_txq_info(vif->txq);
286
287 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
288 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
289 goto out;
290
291 spin_unlock(&fq->lock);
292
293 drv_wake_tx_queue(local, txqi);
294 local_bh_enable();
295 return;
296out:
297 spin_unlock(&fq->lock);
298 local_bh_enable();
299}
300
301static void
302__releases(&local->queue_stop_reason_lock)
303__acquires(&local->queue_stop_reason_lock)
304_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
305{
306 struct ieee80211_sub_if_data *sdata;
307 int n_acs = IEEE80211_NUM_ACS;
308 int i;
309
310 rcu_read_lock();
311
312 if (local->hw.queues < IEEE80211_NUM_ACS)
313 n_acs = 1;
314
315 for (i = 0; i < local->hw.queues; i++) {
316 if (local->queue_stop_reasons[i])
317 continue;
318
319 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
320 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
321 int ac;
322
323 for (ac = 0; ac < n_acs; ac++) {
324 int ac_queue = sdata->vif.hw_queue[ac];
325
326 if (ac_queue == i ||
327 sdata->vif.cab_queue == i)
328 __ieee80211_wake_txqs(sdata, ac);
329 }
330 }
331 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
332 }
333
334 rcu_read_unlock();
335}
336
337void ieee80211_wake_txqs(unsigned long data)
338{
339 struct ieee80211_local *local = (struct ieee80211_local *)data;
340 unsigned long flags;
341
342 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
343 _ieee80211_wake_txqs(local, &flags);
344 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
345}
346
347void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
348{
349 struct ieee80211_sub_if_data *sdata;
350 int n_acs = IEEE80211_NUM_ACS;
351
352 if (local->ops->wake_tx_queue)
353 return;
354
355 if (local->hw.queues < IEEE80211_NUM_ACS)
356 n_acs = 1;
357
358 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
359 int ac;
360
361 if (!sdata->dev)
362 continue;
363
364 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
365 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
366 continue;
367
368 for (ac = 0; ac < n_acs; ac++) {
369 int ac_queue = sdata->vif.hw_queue[ac];
370
371 if (ac_queue == queue ||
372 (sdata->vif.cab_queue == queue &&
373 local->queue_stop_reasons[ac_queue] == 0 &&
374 skb_queue_empty(&local->pending[ac_queue])))
375 netif_wake_subqueue(sdata->dev, ac);
376 }
377 }
378}
379
380static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
381 enum queue_stop_reason reason,
382 bool refcounted,
383 unsigned long *flags)
384{
385 struct ieee80211_local *local = hw_to_local(hw);
386
387 trace_wake_queue(local, queue, reason);
388
389 if (WARN_ON(queue >= hw->queues))
390 return;
391
392 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
393 return;
394
395 if (!refcounted) {
396 local->q_stop_reasons[queue][reason] = 0;
397 } else {
398 local->q_stop_reasons[queue][reason]--;
399 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
400 local->q_stop_reasons[queue][reason] = 0;
401 }
402
403 if (local->q_stop_reasons[queue][reason] == 0)
404 __clear_bit(reason, &local->queue_stop_reasons[queue]);
405
406 if (local->queue_stop_reasons[queue] != 0)
407 /* someone still has this queue stopped */
408 return;
409
410 if (skb_queue_empty(&local->pending[queue])) {
411 rcu_read_lock();
412 ieee80211_propagate_queue_wake(local, queue);
413 rcu_read_unlock();
414 } else
415 tasklet_schedule(&local->tx_pending_tasklet);
416
417 /*
418 * Calling _ieee80211_wake_txqs here can be a problem because it may
419 * release queue_stop_reason_lock which has been taken by
420 * __ieee80211_wake_queue's caller. It is certainly not very nice to
421 * release someone's lock, but it is fine because all the callers of
422 * __ieee80211_wake_queue call it right before releasing the lock.
423 */
424 if (local->ops->wake_tx_queue) {
425 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
426 tasklet_schedule(&local->wake_txqs_tasklet);
427 else
428 _ieee80211_wake_txqs(local, flags);
429 }
430}
431
432void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
433 enum queue_stop_reason reason,
434 bool refcounted)
435{
436 struct ieee80211_local *local = hw_to_local(hw);
437 unsigned long flags;
438
439 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
440 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
441 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
442}
443
444void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
445{
446 ieee80211_wake_queue_by_reason(hw, queue,
447 IEEE80211_QUEUE_STOP_REASON_DRIVER,
448 false);
449}
450EXPORT_SYMBOL(ieee80211_wake_queue);
451
452static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
453 enum queue_stop_reason reason,
454 bool refcounted)
455{
456 struct ieee80211_local *local = hw_to_local(hw);
457 struct ieee80211_sub_if_data *sdata;
458 int n_acs = IEEE80211_NUM_ACS;
459
460 trace_stop_queue(local, queue, reason);
461
462 if (WARN_ON(queue >= hw->queues))
463 return;
464
465 if (!refcounted)
466 local->q_stop_reasons[queue][reason] = 1;
467 else
468 local->q_stop_reasons[queue][reason]++;
469
470 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
471 return;
472
473 if (local->hw.queues < IEEE80211_NUM_ACS)
474 n_acs = 1;
475
476 rcu_read_lock();
477 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
478 int ac;
479
480 if (!sdata->dev)
481 continue;
482
483 for (ac = 0; ac < n_acs; ac++) {
484 if (sdata->vif.hw_queue[ac] == queue ||
485 sdata->vif.cab_queue == queue) {
486 if (!local->ops->wake_tx_queue) {
487 netif_stop_subqueue(sdata->dev, ac);
488 continue;
489 }
490 spin_lock(&local->fq.lock);
491 sdata->vif.txqs_stopped[ac] = true;
492 spin_unlock(&local->fq.lock);
493 }
494 }
495 }
496 rcu_read_unlock();
497}
498
499void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
500 enum queue_stop_reason reason,
501 bool refcounted)
502{
503 struct ieee80211_local *local = hw_to_local(hw);
504 unsigned long flags;
505
506 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
507 __ieee80211_stop_queue(hw, queue, reason, refcounted);
508 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
509}
510
511void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
512{
513 ieee80211_stop_queue_by_reason(hw, queue,
514 IEEE80211_QUEUE_STOP_REASON_DRIVER,
515 false);
516}
517EXPORT_SYMBOL(ieee80211_stop_queue);
518
519void ieee80211_add_pending_skb(struct ieee80211_local *local,
520 struct sk_buff *skb)
521{
522 struct ieee80211_hw *hw = &local->hw;
523 unsigned long flags;
524 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
525 int queue = info->hw_queue;
526
527 if (WARN_ON(!info->control.vif)) {
528 ieee80211_free_txskb(&local->hw, skb);
529 return;
530 }
531
532 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
533 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
534 false);
535 __skb_queue_tail(&local->pending[queue], skb);
536 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
537 false, &flags);
538 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
539}
540
541void ieee80211_add_pending_skbs(struct ieee80211_local *local,
542 struct sk_buff_head *skbs)
543{
544 struct ieee80211_hw *hw = &local->hw;
545 struct sk_buff *skb;
546 unsigned long flags;
547 int queue, i;
548
549 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
550 while ((skb = skb_dequeue(skbs))) {
551 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
552
553 if (WARN_ON(!info->control.vif)) {
554 ieee80211_free_txskb(&local->hw, skb);
555 continue;
556 }
557
558 queue = info->hw_queue;
559
560 __ieee80211_stop_queue(hw, queue,
561 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
562 false);
563
564 __skb_queue_tail(&local->pending[queue], skb);
565 }
566
567 for (i = 0; i < hw->queues; i++)
568 __ieee80211_wake_queue(hw, i,
569 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
570 false, &flags);
571 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
572}
573
574void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
575 unsigned long queues,
576 enum queue_stop_reason reason,
577 bool refcounted)
578{
579 struct ieee80211_local *local = hw_to_local(hw);
580 unsigned long flags;
581 int i;
582
583 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
584
585 for_each_set_bit(i, &queues, hw->queues)
586 __ieee80211_stop_queue(hw, i, reason, refcounted);
587
588 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
589}
590
591void ieee80211_stop_queues(struct ieee80211_hw *hw)
592{
593 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
594 IEEE80211_QUEUE_STOP_REASON_DRIVER,
595 false);
596}
597EXPORT_SYMBOL(ieee80211_stop_queues);
598
599int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
600{
601 struct ieee80211_local *local = hw_to_local(hw);
602 unsigned long flags;
603 int ret;
604
605 if (WARN_ON(queue >= hw->queues))
606 return true;
607
608 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
609 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
610 &local->queue_stop_reasons[queue]);
611 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
612 return ret;
613}
614EXPORT_SYMBOL(ieee80211_queue_stopped);
615
616void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
617 unsigned long queues,
618 enum queue_stop_reason reason,
619 bool refcounted)
620{
621 struct ieee80211_local *local = hw_to_local(hw);
622 unsigned long flags;
623 int i;
624
625 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
626
627 for_each_set_bit(i, &queues, hw->queues)
628 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
629
630 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
631}
632
633void ieee80211_wake_queues(struct ieee80211_hw *hw)
634{
635 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
636 IEEE80211_QUEUE_STOP_REASON_DRIVER,
637 false);
638}
639EXPORT_SYMBOL(ieee80211_wake_queues);
640
641static unsigned int
642ieee80211_get_vif_queues(struct ieee80211_local *local,
643 struct ieee80211_sub_if_data *sdata)
644{
645 unsigned int queues;
646
647 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
648 int ac;
649
650 queues = 0;
651
652 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
653 queues |= BIT(sdata->vif.hw_queue[ac]);
654 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
655 queues |= BIT(sdata->vif.cab_queue);
656 } else {
657 /* all queues */
658 queues = BIT(local->hw.queues) - 1;
659 }
660
661 return queues;
662}
663
664void __ieee80211_flush_queues(struct ieee80211_local *local,
665 struct ieee80211_sub_if_data *sdata,
666 unsigned int queues, bool drop)
667{
668 if (!local->ops->flush)
669 return;
670
671 /*
672 * If no queue was set, or if the HW doesn't support
673 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
674 */
675 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
676 queues = ieee80211_get_vif_queues(local, sdata);
677
678 ieee80211_stop_queues_by_reason(&local->hw, queues,
679 IEEE80211_QUEUE_STOP_REASON_FLUSH,
680 false);
681
682 drv_flush(local, sdata, queues, drop);
683
684 ieee80211_wake_queues_by_reason(&local->hw, queues,
685 IEEE80211_QUEUE_STOP_REASON_FLUSH,
686 false);
687}
688
689void ieee80211_flush_queues(struct ieee80211_local *local,
690 struct ieee80211_sub_if_data *sdata, bool drop)
691{
692 __ieee80211_flush_queues(local, sdata, 0, drop);
693}
694
695void ieee80211_stop_vif_queues(struct ieee80211_local *local,
696 struct ieee80211_sub_if_data *sdata,
697 enum queue_stop_reason reason)
698{
699 ieee80211_stop_queues_by_reason(&local->hw,
700 ieee80211_get_vif_queues(local, sdata),
701 reason, true);
702}
703
704void ieee80211_wake_vif_queues(struct ieee80211_local *local,
705 struct ieee80211_sub_if_data *sdata,
706 enum queue_stop_reason reason)
707{
708 ieee80211_wake_queues_by_reason(&local->hw,
709 ieee80211_get_vif_queues(local, sdata),
710 reason, true);
711}
712
713static void __iterate_interfaces(struct ieee80211_local *local,
714 u32 iter_flags,
715 void (*iterator)(void *data, u8 *mac,
716 struct ieee80211_vif *vif),
717 void *data)
718{
719 struct ieee80211_sub_if_data *sdata;
720 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
721
722 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
723 switch (sdata->vif.type) {
724 case NL80211_IFTYPE_MONITOR:
725 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
726 continue;
727 break;
728 case NL80211_IFTYPE_AP_VLAN:
729 continue;
730 default:
731 break;
732 }
733 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
734 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
735 continue;
736 if (ieee80211_sdata_running(sdata) || !active_only)
737 iterator(data, sdata->vif.addr,
738 &sdata->vif);
739 }
740
741 sdata = rcu_dereference_check(local->monitor_sdata,
742 lockdep_is_held(&local->iflist_mtx) ||
743 lockdep_rtnl_is_held());
744 if (sdata &&
745 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
746 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
747 iterator(data, sdata->vif.addr, &sdata->vif);
748}
749
750void ieee80211_iterate_interfaces(
751 struct ieee80211_hw *hw, u32 iter_flags,
752 void (*iterator)(void *data, u8 *mac,
753 struct ieee80211_vif *vif),
754 void *data)
755{
756 struct ieee80211_local *local = hw_to_local(hw);
757
758 mutex_lock(&local->iflist_mtx);
759 __iterate_interfaces(local, iter_flags, iterator, data);
760 mutex_unlock(&local->iflist_mtx);
761}
762EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
763
764void ieee80211_iterate_active_interfaces_atomic(
765 struct ieee80211_hw *hw, u32 iter_flags,
766 void (*iterator)(void *data, u8 *mac,
767 struct ieee80211_vif *vif),
768 void *data)
769{
770 struct ieee80211_local *local = hw_to_local(hw);
771
772 rcu_read_lock();
773 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
774 iterator, data);
775 rcu_read_unlock();
776}
777EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
778
779void ieee80211_iterate_active_interfaces_rtnl(
780 struct ieee80211_hw *hw, u32 iter_flags,
781 void (*iterator)(void *data, u8 *mac,
782 struct ieee80211_vif *vif),
783 void *data)
784{
785 struct ieee80211_local *local = hw_to_local(hw);
786
787 ASSERT_RTNL();
788
789 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
790 iterator, data);
791}
792EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
793
794static void __iterate_stations(struct ieee80211_local *local,
795 void (*iterator)(void *data,
796 struct ieee80211_sta *sta),
797 void *data)
798{
799 struct sta_info *sta;
800
801 list_for_each_entry_rcu(sta, &local->sta_list, list) {
802 if (!sta->uploaded)
803 continue;
804
805 iterator(data, &sta->sta);
806 }
807}
808
809void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
810 void (*iterator)(void *data,
811 struct ieee80211_sta *sta),
812 void *data)
813{
814 struct ieee80211_local *local = hw_to_local(hw);
815
816 rcu_read_lock();
817 __iterate_stations(local, iterator, data);
818 rcu_read_unlock();
819}
820EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
821
822struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
823{
824 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
825
826 if (!ieee80211_sdata_running(sdata) ||
827 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
828 return NULL;
829 return &sdata->vif;
830}
831EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
832
833struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
834{
835 struct ieee80211_sub_if_data *sdata;
836
837 if (!vif)
838 return NULL;
839
840 sdata = vif_to_sdata(vif);
841
842 if (!ieee80211_sdata_running(sdata) ||
843 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
844 return NULL;
845
846 return &sdata->wdev;
847}
848EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
849
850/*
851 * Nothing should have been stuffed into the workqueue during
852 * the suspend->resume cycle. Since we can't check each caller
853 * of this function if we are already quiescing / suspended,
854 * check here and don't WARN since this can actually happen when
855 * the rx path (for example) is racing against __ieee80211_suspend
856 * and suspending / quiescing was set after the rx path checked
857 * them.
858 */
859static bool ieee80211_can_queue_work(struct ieee80211_local *local)
860{
861 if (local->quiescing || (local->suspended && !local->resuming)) {
862 pr_warn("queueing ieee80211 work while going to suspend\n");
863 return false;
864 }
865
866 return true;
867}
868
869void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
870{
871 struct ieee80211_local *local = hw_to_local(hw);
872
873 if (!ieee80211_can_queue_work(local))
874 return;
875
876 queue_work(local->workqueue, work);
877}
878EXPORT_SYMBOL(ieee80211_queue_work);
879
880void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
881 struct delayed_work *dwork,
882 unsigned long delay)
883{
884 struct ieee80211_local *local = hw_to_local(hw);
885
886 if (!ieee80211_can_queue_work(local))
887 return;
888
889 queue_delayed_work(local->workqueue, dwork, delay);
890}
891EXPORT_SYMBOL(ieee80211_queue_delayed_work);
892
893static void ieee80211_parse_extension_element(u32 *crc,
894 const struct element *elem,
895 struct ieee802_11_elems *elems)
896{
897 const void *data = elem->data + 1;
898 u8 len = elem->datalen - 1;
899
900 switch (elem->data[0]) {
901 case WLAN_EID_EXT_HE_MU_EDCA:
902 if (len == sizeof(*elems->mu_edca_param_set)) {
903 elems->mu_edca_param_set = data;
904 if (crc)
905 *crc = crc32_be(*crc, (void *)elem,
906 elem->datalen + 2);
907 }
908 break;
909 case WLAN_EID_EXT_HE_CAPABILITY:
910 elems->he_cap = data;
911 elems->he_cap_len = len;
912 break;
913 case WLAN_EID_EXT_HE_OPERATION:
914 if (len >= sizeof(*elems->he_operation) &&
915 len == ieee80211_he_oper_size(data) - 1) {
916 if (crc)
917 *crc = crc32_be(*crc, (void *)elem,
918 elem->datalen + 2);
919 elems->he_operation = data;
920 }
921 break;
922 case WLAN_EID_EXT_UORA:
923 if (len == 1)
924 elems->uora_element = data;
925 break;
926 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
927 if (len == 3)
928 elems->max_channel_switch_time = data;
929 break;
930 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
931 if (len == sizeof(*elems->mbssid_config_ie))
932 elems->mbssid_config_ie = data;
933 break;
934 case WLAN_EID_EXT_HE_SPR:
935 if (len >= sizeof(*elems->he_spr) &&
936 len >= ieee80211_he_spr_size(data))
937 elems->he_spr = data;
938 break;
939 case WLAN_EID_EXT_HE_6GHZ_CAPA:
940 if (len == sizeof(*elems->he_6ghz_capa))
941 elems->he_6ghz_capa = data;
942 break;
943 }
944}
945
946static u32
947_ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
948 struct ieee802_11_elems *elems,
949 u64 filter, u32 crc,
950 const struct element *check_inherit)
951{
952 const struct element *elem;
953 bool calc_crc = filter != 0;
954 DECLARE_BITMAP(seen_elems, 256);
955 const u8 *ie;
956
957 bitmap_zero(seen_elems, 256);
958
959 for_each_element(elem, start, len) {
960 bool elem_parse_failed;
961 u8 id = elem->id;
962 u8 elen = elem->datalen;
963 const u8 *pos = elem->data;
964
965 if (check_inherit &&
966 !cfg80211_is_element_inherited(elem,
967 check_inherit))
968 continue;
969
970 switch (id) {
971 case WLAN_EID_SSID:
972 case WLAN_EID_SUPP_RATES:
973 case WLAN_EID_FH_PARAMS:
974 case WLAN_EID_DS_PARAMS:
975 case WLAN_EID_CF_PARAMS:
976 case WLAN_EID_TIM:
977 case WLAN_EID_IBSS_PARAMS:
978 case WLAN_EID_CHALLENGE:
979 case WLAN_EID_RSN:
980 case WLAN_EID_ERP_INFO:
981 case WLAN_EID_EXT_SUPP_RATES:
982 case WLAN_EID_HT_CAPABILITY:
983 case WLAN_EID_HT_OPERATION:
984 case WLAN_EID_VHT_CAPABILITY:
985 case WLAN_EID_VHT_OPERATION:
986 case WLAN_EID_MESH_ID:
987 case WLAN_EID_MESH_CONFIG:
988 case WLAN_EID_PEER_MGMT:
989 case WLAN_EID_PREQ:
990 case WLAN_EID_PREP:
991 case WLAN_EID_PERR:
992 case WLAN_EID_RANN:
993 case WLAN_EID_CHANNEL_SWITCH:
994 case WLAN_EID_EXT_CHANSWITCH_ANN:
995 case WLAN_EID_COUNTRY:
996 case WLAN_EID_PWR_CONSTRAINT:
997 case WLAN_EID_TIMEOUT_INTERVAL:
998 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
999 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1000 case WLAN_EID_CHAN_SWITCH_PARAM:
1001 case WLAN_EID_EXT_CAPABILITY:
1002 case WLAN_EID_CHAN_SWITCH_TIMING:
1003 case WLAN_EID_LINK_ID:
1004 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1005 case WLAN_EID_RSNX:
1006 /*
1007 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1008 * that if the content gets bigger it might be needed more than once
1009 */
1010 if (test_bit(id, seen_elems)) {
1011 elems->parse_error = true;
1012 continue;
1013 }
1014 break;
1015 }
1016
1017 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1018 crc = crc32_be(crc, pos - 2, elen + 2);
1019
1020 elem_parse_failed = false;
1021
1022 switch (id) {
1023 case WLAN_EID_LINK_ID:
1024 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
1025 elem_parse_failed = true;
1026 break;
1027 }
1028 elems->lnk_id = (void *)(pos - 2);
1029 break;
1030 case WLAN_EID_CHAN_SWITCH_TIMING:
1031 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
1032 elem_parse_failed = true;
1033 break;
1034 }
1035 elems->ch_sw_timing = (void *)pos;
1036 break;
1037 case WLAN_EID_EXT_CAPABILITY:
1038 elems->ext_capab = pos;
1039 elems->ext_capab_len = elen;
1040 break;
1041 case WLAN_EID_SSID:
1042 elems->ssid = pos;
1043 elems->ssid_len = elen;
1044 break;
1045 case WLAN_EID_SUPP_RATES:
1046 elems->supp_rates = pos;
1047 elems->supp_rates_len = elen;
1048 break;
1049 case WLAN_EID_DS_PARAMS:
1050 if (elen >= 1)
1051 elems->ds_params = pos;
1052 else
1053 elem_parse_failed = true;
1054 break;
1055 case WLAN_EID_TIM:
1056 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1057 elems->tim = (void *)pos;
1058 elems->tim_len = elen;
1059 } else
1060 elem_parse_failed = true;
1061 break;
1062 case WLAN_EID_CHALLENGE:
1063 elems->challenge = pos;
1064 elems->challenge_len = elen;
1065 break;
1066 case WLAN_EID_VENDOR_SPECIFIC:
1067 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1068 pos[2] == 0xf2) {
1069 /* Microsoft OUI (00:50:F2) */
1070
1071 if (calc_crc)
1072 crc = crc32_be(crc, pos - 2, elen + 2);
1073
1074 if (elen >= 5 && pos[3] == 2) {
1075 /* OUI Type 2 - WMM IE */
1076 if (pos[4] == 0) {
1077 elems->wmm_info = pos;
1078 elems->wmm_info_len = elen;
1079 } else if (pos[4] == 1) {
1080 elems->wmm_param = pos;
1081 elems->wmm_param_len = elen;
1082 }
1083 }
1084 }
1085 break;
1086 case WLAN_EID_RSN:
1087 elems->rsn = pos;
1088 elems->rsn_len = elen;
1089 break;
1090 case WLAN_EID_ERP_INFO:
1091 if (elen >= 1)
1092 elems->erp_info = pos;
1093 else
1094 elem_parse_failed = true;
1095 break;
1096 case WLAN_EID_EXT_SUPP_RATES:
1097 elems->ext_supp_rates = pos;
1098 elems->ext_supp_rates_len = elen;
1099 break;
1100 case WLAN_EID_HT_CAPABILITY:
1101 if (elen >= sizeof(struct ieee80211_ht_cap))
1102 elems->ht_cap_elem = (void *)pos;
1103 else
1104 elem_parse_failed = true;
1105 break;
1106 case WLAN_EID_HT_OPERATION:
1107 if (elen >= sizeof(struct ieee80211_ht_operation))
1108 elems->ht_operation = (void *)pos;
1109 else
1110 elem_parse_failed = true;
1111 break;
1112 case WLAN_EID_VHT_CAPABILITY:
1113 if (elen >= sizeof(struct ieee80211_vht_cap))
1114 elems->vht_cap_elem = (void *)pos;
1115 else
1116 elem_parse_failed = true;
1117 break;
1118 case WLAN_EID_VHT_OPERATION:
1119 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1120 elems->vht_operation = (void *)pos;
1121 if (calc_crc)
1122 crc = crc32_be(crc, pos - 2, elen + 2);
1123 break;
1124 }
1125 elem_parse_failed = true;
1126 break;
1127 case WLAN_EID_OPMODE_NOTIF:
1128 if (elen > 0) {
1129 elems->opmode_notif = pos;
1130 if (calc_crc)
1131 crc = crc32_be(crc, pos - 2, elen + 2);
1132 break;
1133 }
1134 elem_parse_failed = true;
1135 break;
1136 case WLAN_EID_MESH_ID:
1137 elems->mesh_id = pos;
1138 elems->mesh_id_len = elen;
1139 break;
1140 case WLAN_EID_MESH_CONFIG:
1141 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1142 elems->mesh_config = (void *)pos;
1143 else
1144 elem_parse_failed = true;
1145 break;
1146 case WLAN_EID_PEER_MGMT:
1147 elems->peering = pos;
1148 elems->peering_len = elen;
1149 break;
1150 case WLAN_EID_MESH_AWAKE_WINDOW:
1151 if (elen >= 2)
1152 elems->awake_window = (void *)pos;
1153 break;
1154 case WLAN_EID_PREQ:
1155 elems->preq = pos;
1156 elems->preq_len = elen;
1157 break;
1158 case WLAN_EID_PREP:
1159 elems->prep = pos;
1160 elems->prep_len = elen;
1161 break;
1162 case WLAN_EID_PERR:
1163 elems->perr = pos;
1164 elems->perr_len = elen;
1165 break;
1166 case WLAN_EID_RANN:
1167 if (elen >= sizeof(struct ieee80211_rann_ie))
1168 elems->rann = (void *)pos;
1169 else
1170 elem_parse_failed = true;
1171 break;
1172 case WLAN_EID_CHANNEL_SWITCH:
1173 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1174 elem_parse_failed = true;
1175 break;
1176 }
1177 elems->ch_switch_ie = (void *)pos;
1178 break;
1179 case WLAN_EID_EXT_CHANSWITCH_ANN:
1180 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1181 elem_parse_failed = true;
1182 break;
1183 }
1184 elems->ext_chansw_ie = (void *)pos;
1185 break;
1186 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1187 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1188 elem_parse_failed = true;
1189 break;
1190 }
1191 elems->sec_chan_offs = (void *)pos;
1192 break;
1193 case WLAN_EID_CHAN_SWITCH_PARAM:
1194 if (elen !=
1195 sizeof(*elems->mesh_chansw_params_ie)) {
1196 elem_parse_failed = true;
1197 break;
1198 }
1199 elems->mesh_chansw_params_ie = (void *)pos;
1200 break;
1201 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1202 if (!action ||
1203 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1204 elem_parse_failed = true;
1205 break;
1206 }
1207 elems->wide_bw_chansw_ie = (void *)pos;
1208 break;
1209 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1210 if (action) {
1211 elem_parse_failed = true;
1212 break;
1213 }
1214 /*
1215 * This is a bit tricky, but as we only care about
1216 * the wide bandwidth channel switch element, so
1217 * just parse it out manually.
1218 */
1219 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1220 pos, elen);
1221 if (ie) {
1222 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1223 elems->wide_bw_chansw_ie =
1224 (void *)(ie + 2);
1225 else
1226 elem_parse_failed = true;
1227 }
1228 break;
1229 case WLAN_EID_COUNTRY:
1230 elems->country_elem = pos;
1231 elems->country_elem_len = elen;
1232 break;
1233 case WLAN_EID_PWR_CONSTRAINT:
1234 if (elen != 1) {
1235 elem_parse_failed = true;
1236 break;
1237 }
1238 elems->pwr_constr_elem = pos;
1239 break;
1240 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1241 /* Lots of different options exist, but we only care
1242 * about the Dynamic Transmit Power Control element.
1243 * First check for the Cisco OUI, then for the DTPC
1244 * tag (0x00).
1245 */
1246 if (elen < 4) {
1247 elem_parse_failed = true;
1248 break;
1249 }
1250
1251 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1252 pos[2] != 0x96 || pos[3] != 0x00)
1253 break;
1254
1255 if (elen != 6) {
1256 elem_parse_failed = true;
1257 break;
1258 }
1259
1260 if (calc_crc)
1261 crc = crc32_be(crc, pos - 2, elen + 2);
1262
1263 elems->cisco_dtpc_elem = pos;
1264 break;
1265 case WLAN_EID_ADDBA_EXT:
1266 if (elen != sizeof(struct ieee80211_addba_ext_ie)) {
1267 elem_parse_failed = true;
1268 break;
1269 }
1270 elems->addba_ext_ie = (void *)pos;
1271 break;
1272 case WLAN_EID_TIMEOUT_INTERVAL:
1273 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1274 elems->timeout_int = (void *)pos;
1275 else
1276 elem_parse_failed = true;
1277 break;
1278 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1279 if (elen >= sizeof(*elems->max_idle_period_ie))
1280 elems->max_idle_period_ie = (void *)pos;
1281 break;
1282 case WLAN_EID_RSNX:
1283 elems->rsnx = pos;
1284 elems->rsnx_len = elen;
1285 break;
1286 case WLAN_EID_EXTENSION:
1287 ieee80211_parse_extension_element(calc_crc ?
1288 &crc : NULL,
1289 elem, elems);
1290 break;
1291 default:
1292 break;
1293 }
1294
1295 if (elem_parse_failed)
1296 elems->parse_error = true;
1297 else
1298 __set_bit(id, seen_elems);
1299 }
1300
1301 if (!for_each_element_completed(elem, start, len))
1302 elems->parse_error = true;
1303
1304 return crc;
1305}
1306
1307static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1308 struct ieee802_11_elems *elems,
1309 u8 *transmitter_bssid,
1310 u8 *bss_bssid,
1311 u8 *nontransmitted_profile)
1312{
1313 const struct element *elem, *sub;
1314 size_t profile_len = 0;
1315 bool found = false;
1316
1317 if (!bss_bssid || !transmitter_bssid)
1318 return profile_len;
1319
1320 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1321 if (elem->datalen < 2)
1322 continue;
1323
1324 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1325 u8 new_bssid[ETH_ALEN];
1326 const u8 *index;
1327
1328 if (sub->id != 0 || sub->datalen < 4) {
1329 /* not a valid BSS profile */
1330 continue;
1331 }
1332
1333 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1334 sub->data[1] != 2) {
1335 /* The first element of the
1336 * Nontransmitted BSSID Profile is not
1337 * the Nontransmitted BSSID Capability
1338 * element.
1339 */
1340 continue;
1341 }
1342
1343 memset(nontransmitted_profile, 0, len);
1344 profile_len = cfg80211_merge_profile(start, len,
1345 elem,
1346 sub,
1347 nontransmitted_profile,
1348 len);
1349
1350 /* found a Nontransmitted BSSID Profile */
1351 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1352 nontransmitted_profile,
1353 profile_len);
1354 if (!index || index[1] < 1 || index[2] == 0) {
1355 /* Invalid MBSSID Index element */
1356 continue;
1357 }
1358
1359 cfg80211_gen_new_bssid(transmitter_bssid,
1360 elem->data[0],
1361 index[2],
1362 new_bssid);
1363 if (ether_addr_equal(new_bssid, bss_bssid)) {
1364 found = true;
1365 elems->bssid_index_len = index[1];
1366 elems->bssid_index = (void *)&index[2];
1367 break;
1368 }
1369 }
1370 }
1371
1372 return found ? profile_len : 0;
1373}
1374
1375u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1376 struct ieee802_11_elems *elems,
1377 u64 filter, u32 crc, u8 *transmitter_bssid,
1378 u8 *bss_bssid)
1379{
1380 const struct element *non_inherit = NULL;
1381 u8 *nontransmitted_profile;
1382 int nontransmitted_profile_len = 0;
1383
1384 memset(elems, 0, sizeof(*elems));
1385 elems->ie_start = start;
1386 elems->total_len = len;
1387
1388 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1389 if (nontransmitted_profile) {
1390 nontransmitted_profile_len =
1391 ieee802_11_find_bssid_profile(start, len, elems,
1392 transmitter_bssid,
1393 bss_bssid,
1394 nontransmitted_profile);
1395 non_inherit =
1396 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1397 nontransmitted_profile,
1398 nontransmitted_profile_len);
1399 }
1400
1401 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1402 crc, non_inherit);
1403
1404 /* Override with nontransmitted profile, if found */
1405 if (nontransmitted_profile_len)
1406 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1407 nontransmitted_profile_len,
1408 action, elems, 0, 0, NULL);
1409
1410 if (elems->tim && !elems->parse_error) {
1411 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1412
1413 elems->dtim_period = tim_ie->dtim_period;
1414 elems->dtim_count = tim_ie->dtim_count;
1415 }
1416
1417 /* Override DTIM period and count if needed */
1418 if (elems->bssid_index &&
1419 elems->bssid_index_len >=
1420 offsetofend(struct ieee80211_bssid_index, dtim_period))
1421 elems->dtim_period = elems->bssid_index->dtim_period;
1422
1423 if (elems->bssid_index &&
1424 elems->bssid_index_len >=
1425 offsetofend(struct ieee80211_bssid_index, dtim_count))
1426 elems->dtim_count = elems->bssid_index->dtim_count;
1427
1428 kfree(nontransmitted_profile);
1429
1430 return crc;
1431}
1432
1433void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1434 struct ieee80211_tx_queue_params
1435 *qparam, int ac)
1436{
1437 struct ieee80211_chanctx_conf *chanctx_conf;
1438 const struct ieee80211_reg_rule *rrule;
1439 const struct ieee80211_wmm_ac *wmm_ac;
1440 u16 center_freq = 0;
1441
1442 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1443 sdata->vif.type != NL80211_IFTYPE_STATION)
1444 return;
1445
1446 rcu_read_lock();
1447 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1448 if (chanctx_conf)
1449 center_freq = chanctx_conf->def.chan->center_freq;
1450
1451 if (!center_freq) {
1452 rcu_read_unlock();
1453 return;
1454 }
1455
1456 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1457
1458 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1459 rcu_read_unlock();
1460 return;
1461 }
1462
1463 if (sdata->vif.type == NL80211_IFTYPE_AP)
1464 wmm_ac = &rrule->wmm_rule.ap[ac];
1465 else
1466 wmm_ac = &rrule->wmm_rule.client[ac];
1467 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1468 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1469 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1470 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1471 rcu_read_unlock();
1472}
1473
1474void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1475 bool bss_notify, bool enable_qos)
1476{
1477 struct ieee80211_local *local = sdata->local;
1478 struct ieee80211_tx_queue_params qparam;
1479 struct ieee80211_chanctx_conf *chanctx_conf;
1480 int ac;
1481 bool use_11b;
1482 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1483 int aCWmin, aCWmax;
1484
1485 if (!local->ops->conf_tx)
1486 return;
1487
1488 if (local->hw.queues < IEEE80211_NUM_ACS)
1489 return;
1490
1491 memset(&qparam, 0, sizeof(qparam));
1492
1493 rcu_read_lock();
1494 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1495 use_11b = (chanctx_conf &&
1496 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1497 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1498 rcu_read_unlock();
1499
1500 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1501
1502 /* Set defaults according to 802.11-2007 Table 7-37 */
1503 aCWmax = 1023;
1504 if (use_11b)
1505 aCWmin = 31;
1506 else
1507 aCWmin = 15;
1508
1509 /* Confiure old 802.11b/g medium access rules. */
1510 qparam.cw_max = aCWmax;
1511 qparam.cw_min = aCWmin;
1512 qparam.txop = 0;
1513 qparam.aifs = 2;
1514
1515 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1516 /* Update if QoS is enabled. */
1517 if (enable_qos) {
1518 switch (ac) {
1519 case IEEE80211_AC_BK:
1520 qparam.cw_max = aCWmax;
1521 qparam.cw_min = aCWmin;
1522 qparam.txop = 0;
1523 if (is_ocb)
1524 qparam.aifs = 9;
1525 else
1526 qparam.aifs = 7;
1527 break;
1528 /* never happens but let's not leave undefined */
1529 default:
1530 case IEEE80211_AC_BE:
1531 qparam.cw_max = aCWmax;
1532 qparam.cw_min = aCWmin;
1533 qparam.txop = 0;
1534 if (is_ocb)
1535 qparam.aifs = 6;
1536 else
1537 qparam.aifs = 3;
1538 break;
1539 case IEEE80211_AC_VI:
1540 qparam.cw_max = aCWmin;
1541 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1542 if (is_ocb)
1543 qparam.txop = 0;
1544 else if (use_11b)
1545 qparam.txop = 6016/32;
1546 else
1547 qparam.txop = 3008/32;
1548
1549 if (is_ocb)
1550 qparam.aifs = 3;
1551 else
1552 qparam.aifs = 2;
1553 break;
1554 case IEEE80211_AC_VO:
1555 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1556 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1557 if (is_ocb)
1558 qparam.txop = 0;
1559 else if (use_11b)
1560 qparam.txop = 3264/32;
1561 else
1562 qparam.txop = 1504/32;
1563 qparam.aifs = 2;
1564 break;
1565 }
1566 }
1567 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1568
1569 qparam.uapsd = false;
1570
1571 sdata->tx_conf[ac] = qparam;
1572 drv_conf_tx(local, sdata, ac, &qparam);
1573 }
1574
1575 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1576 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1577 sdata->vif.type != NL80211_IFTYPE_NAN) {
1578 sdata->vif.bss_conf.qos = enable_qos;
1579 if (bss_notify)
1580 ieee80211_bss_info_change_notify(sdata,
1581 BSS_CHANGED_QOS);
1582 }
1583}
1584
1585void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1586 u16 transaction, u16 auth_alg, u16 status,
1587 const u8 *extra, size_t extra_len, const u8 *da,
1588 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1589 u32 tx_flags)
1590{
1591 struct ieee80211_local *local = sdata->local;
1592 struct sk_buff *skb;
1593 struct ieee80211_mgmt *mgmt;
1594 int err;
1595
1596 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1597 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1598 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1599 if (!skb)
1600 return;
1601
1602 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1603
1604 mgmt = skb_put_zero(skb, 24 + 6);
1605 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1606 IEEE80211_STYPE_AUTH);
1607 memcpy(mgmt->da, da, ETH_ALEN);
1608 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1609 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1610 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1611 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1612 mgmt->u.auth.status_code = cpu_to_le16(status);
1613 if (extra)
1614 skb_put_data(skb, extra, extra_len);
1615
1616 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1617 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1618 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1619 WARN_ON(err);
1620 }
1621
1622 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1623 tx_flags;
1624 ieee80211_tx_skb(sdata, skb);
1625}
1626
1627void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1628 const u8 *da, const u8 *bssid,
1629 u16 stype, u16 reason,
1630 bool send_frame, u8 *frame_buf)
1631{
1632 struct ieee80211_local *local = sdata->local;
1633 struct sk_buff *skb;
1634 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1635
1636 /* build frame */
1637 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1638 mgmt->duration = 0; /* initialize only */
1639 mgmt->seq_ctrl = 0; /* initialize only */
1640 memcpy(mgmt->da, da, ETH_ALEN);
1641 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1642 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1643 /* u.deauth.reason_code == u.disassoc.reason_code */
1644 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1645
1646 if (send_frame) {
1647 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1648 IEEE80211_DEAUTH_FRAME_LEN);
1649 if (!skb)
1650 return;
1651
1652 skb_reserve(skb, local->hw.extra_tx_headroom);
1653
1654 /* copy in frame */
1655 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1656
1657 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1658 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1659 IEEE80211_SKB_CB(skb)->flags |=
1660 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1661
1662 ieee80211_tx_skb(sdata, skb);
1663 }
1664}
1665
1666static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1667{
1668 if ((end - pos) < 5)
1669 return pos;
1670
1671 *pos++ = WLAN_EID_EXTENSION;
1672 *pos++ = 1 + sizeof(cap);
1673 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1674 memcpy(pos, &cap, sizeof(cap));
1675
1676 return pos + 2;
1677}
1678
1679static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1680 u8 *buffer, size_t buffer_len,
1681 const u8 *ie, size_t ie_len,
1682 enum nl80211_band band,
1683 u32 rate_mask,
1684 struct cfg80211_chan_def *chandef,
1685 size_t *offset, u32 flags)
1686{
1687 struct ieee80211_local *local = sdata->local;
1688 struct ieee80211_supported_band *sband;
1689 const struct ieee80211_sta_he_cap *he_cap;
1690 u8 *pos = buffer, *end = buffer + buffer_len;
1691 size_t noffset;
1692 int supp_rates_len, i;
1693 u8 rates[32];
1694 int num_rates;
1695 int ext_rates_len;
1696 int shift;
1697 u32 rate_flags;
1698 bool have_80mhz = false;
1699
1700 *offset = 0;
1701
1702 sband = local->hw.wiphy->bands[band];
1703 if (WARN_ON_ONCE(!sband))
1704 return 0;
1705
1706 rate_flags = ieee80211_chandef_rate_flags(chandef);
1707 shift = ieee80211_chandef_get_shift(chandef);
1708
1709 num_rates = 0;
1710 for (i = 0; i < sband->n_bitrates; i++) {
1711 if ((BIT(i) & rate_mask) == 0)
1712 continue; /* skip rate */
1713 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1714 continue;
1715
1716 rates[num_rates++] =
1717 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1718 (1 << shift) * 5);
1719 }
1720
1721 supp_rates_len = min_t(int, num_rates, 8);
1722
1723 if (end - pos < 2 + supp_rates_len)
1724 goto out_err;
1725 *pos++ = WLAN_EID_SUPP_RATES;
1726 *pos++ = supp_rates_len;
1727 memcpy(pos, rates, supp_rates_len);
1728 pos += supp_rates_len;
1729
1730 /* insert "request information" if in custom IEs */
1731 if (ie && ie_len) {
1732 static const u8 before_extrates[] = {
1733 WLAN_EID_SSID,
1734 WLAN_EID_SUPP_RATES,
1735 WLAN_EID_REQUEST,
1736 };
1737 noffset = ieee80211_ie_split(ie, ie_len,
1738 before_extrates,
1739 ARRAY_SIZE(before_extrates),
1740 *offset);
1741 if (end - pos < noffset - *offset)
1742 goto out_err;
1743 memcpy(pos, ie + *offset, noffset - *offset);
1744 pos += noffset - *offset;
1745 *offset = noffset;
1746 }
1747
1748 ext_rates_len = num_rates - supp_rates_len;
1749 if (ext_rates_len > 0) {
1750 if (end - pos < 2 + ext_rates_len)
1751 goto out_err;
1752 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1753 *pos++ = ext_rates_len;
1754 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1755 pos += ext_rates_len;
1756 }
1757
1758 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1759 if (end - pos < 3)
1760 goto out_err;
1761 *pos++ = WLAN_EID_DS_PARAMS;
1762 *pos++ = 1;
1763 *pos++ = ieee80211_frequency_to_channel(
1764 chandef->chan->center_freq);
1765 }
1766
1767 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1768 goto done;
1769
1770 /* insert custom IEs that go before HT */
1771 if (ie && ie_len) {
1772 static const u8 before_ht[] = {
1773 /*
1774 * no need to list the ones split off already
1775 * (or generated here)
1776 */
1777 WLAN_EID_DS_PARAMS,
1778 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1779 };
1780 noffset = ieee80211_ie_split(ie, ie_len,
1781 before_ht, ARRAY_SIZE(before_ht),
1782 *offset);
1783 if (end - pos < noffset - *offset)
1784 goto out_err;
1785 memcpy(pos, ie + *offset, noffset - *offset);
1786 pos += noffset - *offset;
1787 *offset = noffset;
1788 }
1789
1790 if (sband->ht_cap.ht_supported) {
1791 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1792 goto out_err;
1793 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1794 sband->ht_cap.cap);
1795 }
1796
1797 /* insert custom IEs that go before VHT */
1798 if (ie && ie_len) {
1799 static const u8 before_vht[] = {
1800 /*
1801 * no need to list the ones split off already
1802 * (or generated here)
1803 */
1804 WLAN_EID_BSS_COEX_2040,
1805 WLAN_EID_EXT_CAPABILITY,
1806 WLAN_EID_SSID_LIST,
1807 WLAN_EID_CHANNEL_USAGE,
1808 WLAN_EID_INTERWORKING,
1809 WLAN_EID_MESH_ID,
1810 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1811 };
1812 noffset = ieee80211_ie_split(ie, ie_len,
1813 before_vht, ARRAY_SIZE(before_vht),
1814 *offset);
1815 if (end - pos < noffset - *offset)
1816 goto out_err;
1817 memcpy(pos, ie + *offset, noffset - *offset);
1818 pos += noffset - *offset;
1819 *offset = noffset;
1820 }
1821
1822 /* Check if any channel in this sband supports at least 80 MHz */
1823 for (i = 0; i < sband->n_channels; i++) {
1824 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1825 IEEE80211_CHAN_NO_80MHZ))
1826 continue;
1827
1828 have_80mhz = true;
1829 break;
1830 }
1831
1832 if (sband->vht_cap.vht_supported && have_80mhz) {
1833 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1834 goto out_err;
1835 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1836 sband->vht_cap.cap);
1837 }
1838
1839 /* insert custom IEs that go before HE */
1840 if (ie && ie_len) {
1841 static const u8 before_he[] = {
1842 /*
1843 * no need to list the ones split off before VHT
1844 * or generated here
1845 */
1846 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1847 WLAN_EID_AP_CSN,
1848 /* TODO: add 11ah/11aj/11ak elements */
1849 };
1850 noffset = ieee80211_ie_split(ie, ie_len,
1851 before_he, ARRAY_SIZE(before_he),
1852 *offset);
1853 if (end - pos < noffset - *offset)
1854 goto out_err;
1855 memcpy(pos, ie + *offset, noffset - *offset);
1856 pos += noffset - *offset;
1857 *offset = noffset;
1858 }
1859
1860 he_cap = ieee80211_get_he_sta_cap(sband);
1861 if (he_cap) {
1862 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1863 if (!pos)
1864 goto out_err;
1865
1866 if (sband->band == NL80211_BAND_6GHZ) {
1867 enum nl80211_iftype iftype =
1868 ieee80211_vif_type_p2p(&sdata->vif);
1869 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
1870
1871 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
1872 }
1873 }
1874
1875 /*
1876 * If adding more here, adjust code in main.c
1877 * that calculates local->scan_ies_len.
1878 */
1879
1880 return pos - buffer;
1881 out_err:
1882 WARN_ONCE(1, "not enough space for preq IEs\n");
1883 done:
1884 return pos - buffer;
1885}
1886
1887int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
1888 size_t buffer_len,
1889 struct ieee80211_scan_ies *ie_desc,
1890 const u8 *ie, size_t ie_len,
1891 u8 bands_used, u32 *rate_masks,
1892 struct cfg80211_chan_def *chandef,
1893 u32 flags)
1894{
1895 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1896 int i;
1897
1898 memset(ie_desc, 0, sizeof(*ie_desc));
1899
1900 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1901 if (bands_used & BIT(i)) {
1902 pos += ieee80211_build_preq_ies_band(sdata,
1903 buffer + pos,
1904 buffer_len - pos,
1905 ie, ie_len, i,
1906 rate_masks[i],
1907 chandef,
1908 &custom_ie_offset,
1909 flags);
1910 ie_desc->ies[i] = buffer + old_pos;
1911 ie_desc->len[i] = pos - old_pos;
1912 old_pos = pos;
1913 }
1914 }
1915
1916 /* add any remaining custom IEs */
1917 if (ie && ie_len) {
1918 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1919 "not enough space for preq custom IEs\n"))
1920 return pos;
1921 memcpy(buffer + pos, ie + custom_ie_offset,
1922 ie_len - custom_ie_offset);
1923 ie_desc->common_ies = buffer + pos;
1924 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1925 pos += ie_len - custom_ie_offset;
1926 }
1927
1928 return pos;
1929};
1930
1931struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1932 const u8 *src, const u8 *dst,
1933 u32 ratemask,
1934 struct ieee80211_channel *chan,
1935 const u8 *ssid, size_t ssid_len,
1936 const u8 *ie, size_t ie_len,
1937 u32 flags)
1938{
1939 struct ieee80211_local *local = sdata->local;
1940 struct cfg80211_chan_def chandef;
1941 struct sk_buff *skb;
1942 struct ieee80211_mgmt *mgmt;
1943 int ies_len;
1944 u32 rate_masks[NUM_NL80211_BANDS] = {};
1945 struct ieee80211_scan_ies dummy_ie_desc;
1946
1947 /*
1948 * Do not send DS Channel parameter for directed probe requests
1949 * in order to maximize the chance that we get a response. Some
1950 * badly-behaved APs don't respond when this parameter is included.
1951 */
1952 chandef.width = sdata->vif.bss_conf.chandef.width;
1953 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
1954 chandef.chan = NULL;
1955 else
1956 chandef.chan = chan;
1957
1958 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1959 100 + ie_len);
1960 if (!skb)
1961 return NULL;
1962
1963 rate_masks[chan->band] = ratemask;
1964 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
1965 skb_tailroom(skb), &dummy_ie_desc,
1966 ie, ie_len, BIT(chan->band),
1967 rate_masks, &chandef, flags);
1968 skb_put(skb, ies_len);
1969
1970 if (dst) {
1971 mgmt = (struct ieee80211_mgmt *) skb->data;
1972 memcpy(mgmt->da, dst, ETH_ALEN);
1973 memcpy(mgmt->bssid, dst, ETH_ALEN);
1974 }
1975
1976 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1977
1978 return skb;
1979}
1980
1981u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1982 struct ieee802_11_elems *elems,
1983 enum nl80211_band band, u32 *basic_rates)
1984{
1985 struct ieee80211_supported_band *sband;
1986 size_t num_rates;
1987 u32 supp_rates, rate_flags;
1988 int i, j, shift;
1989
1990 sband = sdata->local->hw.wiphy->bands[band];
1991 if (WARN_ON(!sband))
1992 return 1;
1993
1994 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1995 shift = ieee80211_vif_get_shift(&sdata->vif);
1996
1997 num_rates = sband->n_bitrates;
1998 supp_rates = 0;
1999 for (i = 0; i < elems->supp_rates_len +
2000 elems->ext_supp_rates_len; i++) {
2001 u8 rate = 0;
2002 int own_rate;
2003 bool is_basic;
2004 if (i < elems->supp_rates_len)
2005 rate = elems->supp_rates[i];
2006 else if (elems->ext_supp_rates)
2007 rate = elems->ext_supp_rates
2008 [i - elems->supp_rates_len];
2009 own_rate = 5 * (rate & 0x7f);
2010 is_basic = !!(rate & 0x80);
2011
2012 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2013 continue;
2014
2015 for (j = 0; j < num_rates; j++) {
2016 int brate;
2017 if ((rate_flags & sband->bitrates[j].flags)
2018 != rate_flags)
2019 continue;
2020
2021 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2022 1 << shift);
2023
2024 if (brate == own_rate) {
2025 supp_rates |= BIT(j);
2026 if (basic_rates && is_basic)
2027 *basic_rates |= BIT(j);
2028 }
2029 }
2030 }
2031 return supp_rates;
2032}
2033
2034void ieee80211_stop_device(struct ieee80211_local *local)
2035{
2036 ieee80211_led_radio(local, false);
2037 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2038
2039 cancel_work_sync(&local->reconfig_filter);
2040
2041 flush_workqueue(local->workqueue);
2042 drv_stop(local);
2043}
2044
2045static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2046 bool aborted)
2047{
2048 /* It's possible that we don't handle the scan completion in
2049 * time during suspend, so if it's still marked as completed
2050 * here, queue the work and flush it to clean things up.
2051 * Instead of calling the worker function directly here, we
2052 * really queue it to avoid potential races with other flows
2053 * scheduling the same work.
2054 */
2055 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2056 /* If coming from reconfiguration failure, abort the scan so
2057 * we don't attempt to continue a partial HW scan - which is
2058 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2059 * completed scan, and a 5 GHz portion is still pending.
2060 */
2061 if (aborted)
2062 set_bit(SCAN_ABORTED, &local->scanning);
2063 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2064 flush_delayed_work(&local->scan_work);
2065 }
2066}
2067
2068static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2069{
2070 struct ieee80211_sub_if_data *sdata;
2071 struct ieee80211_chanctx *ctx;
2072
2073 /*
2074 * We get here if during resume the device can't be restarted properly.
2075 * We might also get here if this happens during HW reset, which is a
2076 * slightly different situation and we need to drop all connections in
2077 * the latter case.
2078 *
2079 * Ask cfg80211 to turn off all interfaces, this will result in more
2080 * warnings but at least we'll then get into a clean stopped state.
2081 */
2082
2083 local->resuming = false;
2084 local->suspended = false;
2085 local->in_reconfig = false;
2086
2087 ieee80211_flush_completed_scan(local, true);
2088
2089 /* scheduled scan clearly can't be running any more, but tell
2090 * cfg80211 and clear local state
2091 */
2092 ieee80211_sched_scan_end(local);
2093
2094 list_for_each_entry(sdata, &local->interfaces, list)
2095 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2096
2097 /* Mark channel contexts as not being in the driver any more to avoid
2098 * removing them from the driver during the shutdown process...
2099 */
2100 mutex_lock(&local->chanctx_mtx);
2101 list_for_each_entry(ctx, &local->chanctx_list, list)
2102 ctx->driver_present = false;
2103 mutex_unlock(&local->chanctx_mtx);
2104
2105 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
2106}
2107
2108static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2109 struct ieee80211_sub_if_data *sdata)
2110{
2111 struct ieee80211_chanctx_conf *conf;
2112 struct ieee80211_chanctx *ctx;
2113
2114 if (!local->use_chanctx)
2115 return;
2116
2117 mutex_lock(&local->chanctx_mtx);
2118 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2119 lockdep_is_held(&local->chanctx_mtx));
2120 if (conf) {
2121 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2122 drv_assign_vif_chanctx(local, sdata, ctx);
2123 }
2124 mutex_unlock(&local->chanctx_mtx);
2125}
2126
2127static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2128{
2129 struct ieee80211_local *local = sdata->local;
2130 struct sta_info *sta;
2131
2132 /* add STAs back */
2133 mutex_lock(&local->sta_mtx);
2134 list_for_each_entry(sta, &local->sta_list, list) {
2135 enum ieee80211_sta_state state;
2136
2137 if (!sta->uploaded || sta->sdata != sdata)
2138 continue;
2139
2140 for (state = IEEE80211_STA_NOTEXIST;
2141 state < sta->sta_state; state++)
2142 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2143 state + 1));
2144 }
2145 mutex_unlock(&local->sta_mtx);
2146}
2147
2148static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2149{
2150 struct cfg80211_nan_func *func, **funcs;
2151 int res, id, i = 0;
2152
2153 res = drv_start_nan(sdata->local, sdata,
2154 &sdata->u.nan.conf);
2155 if (WARN_ON(res))
2156 return res;
2157
2158 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2159 sizeof(*funcs),
2160 GFP_KERNEL);
2161 if (!funcs)
2162 return -ENOMEM;
2163
2164 /* Add all the functions:
2165 * This is a little bit ugly. We need to call a potentially sleeping
2166 * callback for each NAN function, so we can't hold the spinlock.
2167 */
2168 spin_lock_bh(&sdata->u.nan.func_lock);
2169
2170 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2171 funcs[i++] = func;
2172
2173 spin_unlock_bh(&sdata->u.nan.func_lock);
2174
2175 for (i = 0; funcs[i]; i++) {
2176 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2177 if (WARN_ON(res))
2178 ieee80211_nan_func_terminated(&sdata->vif,
2179 funcs[i]->instance_id,
2180 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2181 GFP_KERNEL);
2182 }
2183
2184 kfree(funcs);
2185
2186 return 0;
2187}
2188
2189int ieee80211_reconfig(struct ieee80211_local *local)
2190{
2191 struct ieee80211_hw *hw = &local->hw;
2192 struct ieee80211_sub_if_data *sdata;
2193 struct ieee80211_chanctx *ctx;
2194 struct sta_info *sta;
2195 int res, i;
2196 bool reconfig_due_to_wowlan = false;
2197 struct ieee80211_sub_if_data *sched_scan_sdata;
2198 struct cfg80211_sched_scan_request *sched_scan_req;
2199 bool sched_scan_stopped = false;
2200 bool suspended = local->suspended;
2201
2202 /* nothing to do if HW shouldn't run */
2203 if (!local->open_count)
2204 goto wake_up;
2205
2206#ifdef CONFIG_PM
2207 if (suspended)
2208 local->resuming = true;
2209
2210 if (local->wowlan) {
2211 /*
2212 * In the wowlan case, both mac80211 and the device
2213 * are functional when the resume op is called, so
2214 * clear local->suspended so the device could operate
2215 * normally (e.g. pass rx frames).
2216 */
2217 local->suspended = false;
2218 res = drv_resume(local);
2219 local->wowlan = false;
2220 if (res < 0) {
2221 local->resuming = false;
2222 return res;
2223 }
2224 if (res == 0)
2225 goto wake_up;
2226 WARN_ON(res > 1);
2227 /*
2228 * res is 1, which means the driver requested
2229 * to go through a regular reset on wakeup.
2230 * restore local->suspended in this case.
2231 */
2232 reconfig_due_to_wowlan = true;
2233 local->suspended = true;
2234 }
2235#endif
2236
2237 /*
2238 * In case of hw_restart during suspend (without wowlan),
2239 * cancel restart work, as we are reconfiguring the device
2240 * anyway.
2241 * Note that restart_work is scheduled on a frozen workqueue,
2242 * so we can't deadlock in this case.
2243 */
2244 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2245 cancel_work_sync(&local->restart_work);
2246
2247 local->started = false;
2248
2249 /*
2250 * Upon resume hardware can sometimes be goofy due to
2251 * various platform / driver / bus issues, so restarting
2252 * the device may at times not work immediately. Propagate
2253 * the error.
2254 */
2255 res = drv_start(local);
2256 if (res) {
2257 if (suspended)
2258 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2259 else
2260 WARN(1, "Hardware became unavailable during restart.\n");
2261 ieee80211_handle_reconfig_failure(local);
2262 return res;
2263 }
2264
2265 /* setup fragmentation threshold */
2266 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2267
2268 /* setup RTS threshold */
2269 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2270
2271 /* reset coverage class */
2272 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2273
2274 ieee80211_led_radio(local, true);
2275 ieee80211_mod_tpt_led_trig(local,
2276 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2277
2278 /* add interfaces */
2279 sdata = rtnl_dereference(local->monitor_sdata);
2280 if (sdata) {
2281 /* in HW restart it exists already */
2282 WARN_ON(local->resuming);
2283 res = drv_add_interface(local, sdata);
2284 if (WARN_ON(res)) {
2285 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2286 synchronize_net();
2287 kfree(sdata);
2288 }
2289 }
2290
2291 list_for_each_entry(sdata, &local->interfaces, list) {
2292 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2293 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2294 ieee80211_sdata_running(sdata)) {
2295 res = drv_add_interface(local, sdata);
2296 if (WARN_ON(res))
2297 break;
2298 }
2299 }
2300
2301 /* If adding any of the interfaces failed above, roll back and
2302 * report failure.
2303 */
2304 if (res) {
2305 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2306 list)
2307 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2308 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2309 ieee80211_sdata_running(sdata))
2310 drv_remove_interface(local, sdata);
2311 ieee80211_handle_reconfig_failure(local);
2312 return res;
2313 }
2314
2315 /* add channel contexts */
2316 if (local->use_chanctx) {
2317 mutex_lock(&local->chanctx_mtx);
2318 list_for_each_entry(ctx, &local->chanctx_list, list)
2319 if (ctx->replace_state !=
2320 IEEE80211_CHANCTX_REPLACES_OTHER)
2321 WARN_ON(drv_add_chanctx(local, ctx));
2322 mutex_unlock(&local->chanctx_mtx);
2323
2324 sdata = rtnl_dereference(local->monitor_sdata);
2325 if (sdata && ieee80211_sdata_running(sdata))
2326 ieee80211_assign_chanctx(local, sdata);
2327 }
2328
2329 /* reconfigure hardware */
2330 ieee80211_hw_config(local, ~0);
2331
2332 ieee80211_configure_filter(local);
2333
2334 /* Finally also reconfigure all the BSS information */
2335 list_for_each_entry(sdata, &local->interfaces, list) {
2336 u32 changed;
2337
2338 if (!ieee80211_sdata_running(sdata))
2339 continue;
2340
2341 ieee80211_assign_chanctx(local, sdata);
2342
2343 switch (sdata->vif.type) {
2344 case NL80211_IFTYPE_AP_VLAN:
2345 case NL80211_IFTYPE_MONITOR:
2346 break;
2347 case NL80211_IFTYPE_ADHOC:
2348 if (sdata->vif.bss_conf.ibss_joined)
2349 WARN_ON(drv_join_ibss(local, sdata));
2350 fallthrough;
2351 default:
2352 ieee80211_reconfig_stations(sdata);
2353 fallthrough;
2354 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2355 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2356 drv_conf_tx(local, sdata, i,
2357 &sdata->tx_conf[i]);
2358 break;
2359 }
2360
2361 /* common change flags for all interface types */
2362 changed = BSS_CHANGED_ERP_CTS_PROT |
2363 BSS_CHANGED_ERP_PREAMBLE |
2364 BSS_CHANGED_ERP_SLOT |
2365 BSS_CHANGED_HT |
2366 BSS_CHANGED_BASIC_RATES |
2367 BSS_CHANGED_BEACON_INT |
2368 BSS_CHANGED_BSSID |
2369 BSS_CHANGED_CQM |
2370 BSS_CHANGED_QOS |
2371 BSS_CHANGED_IDLE |
2372 BSS_CHANGED_TXPOWER |
2373 BSS_CHANGED_MCAST_RATE;
2374
2375 if (sdata->vif.mu_mimo_owner)
2376 changed |= BSS_CHANGED_MU_GROUPS;
2377
2378 switch (sdata->vif.type) {
2379 case NL80211_IFTYPE_STATION:
2380 changed |= BSS_CHANGED_ASSOC |
2381 BSS_CHANGED_ARP_FILTER |
2382 BSS_CHANGED_PS;
2383
2384 /* Re-send beacon info report to the driver */
2385 if (sdata->u.mgd.have_beacon)
2386 changed |= BSS_CHANGED_BEACON_INFO;
2387
2388 if (sdata->vif.bss_conf.max_idle_period ||
2389 sdata->vif.bss_conf.protected_keep_alive)
2390 changed |= BSS_CHANGED_KEEP_ALIVE;
2391
2392 sdata_lock(sdata);
2393 ieee80211_bss_info_change_notify(sdata, changed);
2394 sdata_unlock(sdata);
2395 break;
2396 case NL80211_IFTYPE_OCB:
2397 changed |= BSS_CHANGED_OCB;
2398 ieee80211_bss_info_change_notify(sdata, changed);
2399 break;
2400 case NL80211_IFTYPE_ADHOC:
2401 changed |= BSS_CHANGED_IBSS;
2402 fallthrough;
2403 case NL80211_IFTYPE_AP:
2404 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2405
2406 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2407 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2408 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2409 changed |= BSS_CHANGED_FTM_RESPONDER;
2410
2411 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2412 changed |= BSS_CHANGED_AP_PROBE_RESP;
2413
2414 if (rcu_access_pointer(sdata->u.ap.beacon))
2415 drv_start_ap(local, sdata);
2416 }
2417 fallthrough;
2418 case NL80211_IFTYPE_MESH_POINT:
2419 if (sdata->vif.bss_conf.enable_beacon) {
2420 changed |= BSS_CHANGED_BEACON |
2421 BSS_CHANGED_BEACON_ENABLED;
2422 ieee80211_bss_info_change_notify(sdata, changed);
2423 }
2424 break;
2425 case NL80211_IFTYPE_NAN:
2426 res = ieee80211_reconfig_nan(sdata);
2427 if (res < 0) {
2428 ieee80211_handle_reconfig_failure(local);
2429 return res;
2430 }
2431 break;
2432 case NL80211_IFTYPE_WDS:
2433 case NL80211_IFTYPE_AP_VLAN:
2434 case NL80211_IFTYPE_MONITOR:
2435 case NL80211_IFTYPE_P2P_DEVICE:
2436 /* nothing to do */
2437 break;
2438 case NL80211_IFTYPE_UNSPECIFIED:
2439 case NUM_NL80211_IFTYPES:
2440 case NL80211_IFTYPE_P2P_CLIENT:
2441 case NL80211_IFTYPE_P2P_GO:
2442 WARN_ON(1);
2443 break;
2444 }
2445 }
2446
2447 ieee80211_recalc_ps(local);
2448
2449 /*
2450 * The sta might be in psm against the ap (e.g. because
2451 * this was the state before a hw restart), so we
2452 * explicitly send a null packet in order to make sure
2453 * it'll sync against the ap (and get out of psm).
2454 */
2455 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2456 list_for_each_entry(sdata, &local->interfaces, list) {
2457 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2458 continue;
2459 if (!sdata->u.mgd.associated)
2460 continue;
2461
2462 ieee80211_send_nullfunc(local, sdata, false);
2463 }
2464 }
2465
2466 /* APs are now beaconing, add back stations */
2467 mutex_lock(&local->sta_mtx);
2468 list_for_each_entry(sta, &local->sta_list, list) {
2469 enum ieee80211_sta_state state;
2470
2471 if (!sta->uploaded)
2472 continue;
2473
2474 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2475 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2476 continue;
2477
2478 for (state = IEEE80211_STA_NOTEXIST;
2479 state < sta->sta_state; state++)
2480 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2481 state + 1));
2482 }
2483 mutex_unlock(&local->sta_mtx);
2484
2485 /* add back keys */
2486 list_for_each_entry(sdata, &local->interfaces, list)
2487 ieee80211_reenable_keys(sdata);
2488
2489 /* Reconfigure sched scan if it was interrupted by FW restart */
2490 mutex_lock(&local->mtx);
2491 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2492 lockdep_is_held(&local->mtx));
2493 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2494 lockdep_is_held(&local->mtx));
2495 if (sched_scan_sdata && sched_scan_req)
2496 /*
2497 * Sched scan stopped, but we don't want to report it. Instead,
2498 * we're trying to reschedule. However, if more than one scan
2499 * plan was set, we cannot reschedule since we don't know which
2500 * scan plan was currently running (and some scan plans may have
2501 * already finished).
2502 */
2503 if (sched_scan_req->n_scan_plans > 1 ||
2504 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2505 sched_scan_req)) {
2506 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2507 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2508 sched_scan_stopped = true;
2509 }
2510 mutex_unlock(&local->mtx);
2511
2512 if (sched_scan_stopped)
2513 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
2514
2515 wake_up:
2516
2517 if (local->monitors == local->open_count && local->monitors > 0)
2518 ieee80211_add_virtual_monitor(local);
2519
2520 /*
2521 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2522 * sessions can be established after a resume.
2523 *
2524 * Also tear down aggregation sessions since reconfiguring
2525 * them in a hardware restart scenario is not easily done
2526 * right now, and the hardware will have lost information
2527 * about the sessions, but we and the AP still think they
2528 * are active. This is really a workaround though.
2529 */
2530 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2531 mutex_lock(&local->sta_mtx);
2532
2533 list_for_each_entry(sta, &local->sta_list, list) {
2534 if (!local->resuming)
2535 ieee80211_sta_tear_down_BA_sessions(
2536 sta, AGG_STOP_LOCAL_REQUEST);
2537 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2538 }
2539
2540 mutex_unlock(&local->sta_mtx);
2541 }
2542
2543 if (local->in_reconfig) {
2544 local->in_reconfig = false;
2545 barrier();
2546
2547 /* Restart deferred ROCs */
2548 mutex_lock(&local->mtx);
2549 ieee80211_start_next_roc(local);
2550 mutex_unlock(&local->mtx);
2551
2552 /* Requeue all works */
2553 list_for_each_entry(sdata, &local->interfaces, list)
2554 ieee80211_queue_work(&local->hw, &sdata->work);
2555 }
2556
2557 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2558 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2559 false);
2560
2561 /*
2562 * If this is for hw restart things are still running.
2563 * We may want to change that later, however.
2564 */
2565 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2566 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2567
2568 if (!suspended)
2569 return 0;
2570
2571#ifdef CONFIG_PM
2572 /* first set suspended false, then resuming */
2573 local->suspended = false;
2574 mb();
2575 local->resuming = false;
2576
2577 ieee80211_flush_completed_scan(local, false);
2578
2579 if (local->open_count && !reconfig_due_to_wowlan)
2580 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2581
2582 list_for_each_entry(sdata, &local->interfaces, list) {
2583 if (!ieee80211_sdata_running(sdata))
2584 continue;
2585 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2586 ieee80211_sta_restart(sdata);
2587 }
2588
2589 mod_timer(&local->sta_cleanup, jiffies + 1);
2590#else
2591 WARN_ON(1);
2592#endif
2593
2594 return 0;
2595}
2596
2597void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2598{
2599 struct ieee80211_sub_if_data *sdata;
2600 struct ieee80211_local *local;
2601 struct ieee80211_key *key;
2602
2603 if (WARN_ON(!vif))
2604 return;
2605
2606 sdata = vif_to_sdata(vif);
2607 local = sdata->local;
2608
2609 if (WARN_ON(!local->resuming))
2610 return;
2611
2612 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2613 return;
2614
2615 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2616
2617 mutex_lock(&local->key_mtx);
2618 list_for_each_entry(key, &sdata->key_list, list)
2619 key->flags |= KEY_FLAG_TAINTED;
2620 mutex_unlock(&local->key_mtx);
2621}
2622EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2623
2624void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2625{
2626 struct ieee80211_local *local = sdata->local;
2627 struct ieee80211_chanctx_conf *chanctx_conf;
2628 struct ieee80211_chanctx *chanctx;
2629
2630 mutex_lock(&local->chanctx_mtx);
2631
2632 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2633 lockdep_is_held(&local->chanctx_mtx));
2634
2635 /*
2636 * This function can be called from a work, thus it may be possible
2637 * that the chanctx_conf is removed (due to a disconnection, for
2638 * example).
2639 * So nothing should be done in such case.
2640 */
2641 if (!chanctx_conf)
2642 goto unlock;
2643
2644 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2645 ieee80211_recalc_smps_chanctx(local, chanctx);
2646 unlock:
2647 mutex_unlock(&local->chanctx_mtx);
2648}
2649
2650void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2651{
2652 struct ieee80211_local *local = sdata->local;
2653 struct ieee80211_chanctx_conf *chanctx_conf;
2654 struct ieee80211_chanctx *chanctx;
2655
2656 mutex_lock(&local->chanctx_mtx);
2657
2658 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2659 lockdep_is_held(&local->chanctx_mtx));
2660
2661 if (WARN_ON_ONCE(!chanctx_conf))
2662 goto unlock;
2663
2664 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2665 ieee80211_recalc_chanctx_min_def(local, chanctx);
2666 unlock:
2667 mutex_unlock(&local->chanctx_mtx);
2668}
2669
2670size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2671{
2672 size_t pos = offset;
2673
2674 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2675 pos += 2 + ies[pos + 1];
2676
2677 return pos;
2678}
2679
2680static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2681 int rssi_min_thold,
2682 int rssi_max_thold)
2683{
2684 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2685
2686 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2687 return;
2688
2689 /*
2690 * Scale up threshold values before storing it, as the RSSI averaging
2691 * algorithm uses a scaled up value as well. Change this scaling
2692 * factor if the RSSI averaging algorithm changes.
2693 */
2694 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2695 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2696}
2697
2698void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2699 int rssi_min_thold,
2700 int rssi_max_thold)
2701{
2702 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2703
2704 WARN_ON(rssi_min_thold == rssi_max_thold ||
2705 rssi_min_thold > rssi_max_thold);
2706
2707 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2708 rssi_max_thold);
2709}
2710EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2711
2712void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2713{
2714 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2715
2716 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2717}
2718EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
2719
2720u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2721 u16 cap)
2722{
2723 __le16 tmp;
2724
2725 *pos++ = WLAN_EID_HT_CAPABILITY;
2726 *pos++ = sizeof(struct ieee80211_ht_cap);
2727 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2728
2729 /* capability flags */
2730 tmp = cpu_to_le16(cap);
2731 memcpy(pos, &tmp, sizeof(u16));
2732 pos += sizeof(u16);
2733
2734 /* AMPDU parameters */
2735 *pos++ = ht_cap->ampdu_factor |
2736 (ht_cap->ampdu_density <<
2737 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2738
2739 /* MCS set */
2740 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2741 pos += sizeof(ht_cap->mcs);
2742
2743 /* extended capabilities */
2744 pos += sizeof(__le16);
2745
2746 /* BF capabilities */
2747 pos += sizeof(__le32);
2748
2749 /* antenna selection */
2750 pos += sizeof(u8);
2751
2752 return pos;
2753}
2754
2755u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2756 u32 cap)
2757{
2758 __le32 tmp;
2759
2760 *pos++ = WLAN_EID_VHT_CAPABILITY;
2761 *pos++ = sizeof(struct ieee80211_vht_cap);
2762 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2763
2764 /* capability flags */
2765 tmp = cpu_to_le32(cap);
2766 memcpy(pos, &tmp, sizeof(u32));
2767 pos += sizeof(u32);
2768
2769 /* VHT MCS set */
2770 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2771 pos += sizeof(vht_cap->vht_mcs);
2772
2773 return pos;
2774}
2775
2776u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2777{
2778 const struct ieee80211_sta_he_cap *he_cap;
2779 struct ieee80211_supported_band *sband;
2780 u8 n;
2781
2782 sband = ieee80211_get_sband(sdata);
2783 if (!sband)
2784 return 0;
2785
2786 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2787 if (!he_cap)
2788 return 0;
2789
2790 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2791 return 2 + 1 +
2792 sizeof(he_cap->he_cap_elem) + n +
2793 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2794 he_cap->he_cap_elem.phy_cap_info);
2795}
2796
2797u8 *ieee80211_ie_build_he_cap(u8 *pos,
2798 const struct ieee80211_sta_he_cap *he_cap,
2799 u8 *end)
2800{
2801 u8 n;
2802 u8 ie_len;
2803 u8 *orig_pos = pos;
2804
2805 /* Make sure we have place for the IE */
2806 /*
2807 * TODO: the 1 added is because this temporarily is under the EXTENSION
2808 * IE. Get rid of it when it moves.
2809 */
2810 if (!he_cap)
2811 return orig_pos;
2812
2813 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2814 ie_len = 2 + 1 +
2815 sizeof(he_cap->he_cap_elem) + n +
2816 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2817 he_cap->he_cap_elem.phy_cap_info);
2818
2819 if ((end - pos) < ie_len)
2820 return orig_pos;
2821
2822 *pos++ = WLAN_EID_EXTENSION;
2823 pos++; /* We'll set the size later below */
2824 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2825
2826 /* Fixed data */
2827 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2828 pos += sizeof(he_cap->he_cap_elem);
2829
2830 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2831 pos += n;
2832
2833 /* Check if PPE Threshold should be present */
2834 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2835 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2836 goto end;
2837
2838 /*
2839 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2840 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2841 */
2842 n = hweight8(he_cap->ppe_thres[0] &
2843 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2844 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2845 IEEE80211_PPE_THRES_NSS_POS));
2846
2847 /*
2848 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2849 * total size.
2850 */
2851 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2852 n = DIV_ROUND_UP(n, 8);
2853
2854 /* Copy PPE Thresholds */
2855 memcpy(pos, &he_cap->ppe_thres, n);
2856 pos += n;
2857
2858end:
2859 orig_pos[1] = (pos - orig_pos) - 2;
2860 return pos;
2861}
2862
2863void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2864 struct sk_buff *skb)
2865{
2866 struct ieee80211_supported_band *sband;
2867 const struct ieee80211_sband_iftype_data *iftd;
2868 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
2869 u8 *pos;
2870 u16 cap;
2871
2872 sband = ieee80211_get_sband(sdata);
2873 if (!sband)
2874 return;
2875
2876 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
2877 if (WARN_ON(!iftd))
2878 return;
2879
2880 /* Check for device HE 6 GHz capability before adding element */
2881 if (!iftd->he_6ghz_capa.capa)
2882 return;
2883
2884 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
2885 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
2886
2887 switch (sdata->smps_mode) {
2888 case IEEE80211_SMPS_AUTOMATIC:
2889 case IEEE80211_SMPS_NUM_MODES:
2890 WARN_ON(1);
2891 fallthrough;
2892 case IEEE80211_SMPS_OFF:
2893 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
2894 IEEE80211_HE_6GHZ_CAP_SM_PS);
2895 break;
2896 case IEEE80211_SMPS_STATIC:
2897 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
2898 IEEE80211_HE_6GHZ_CAP_SM_PS);
2899 break;
2900 case IEEE80211_SMPS_DYNAMIC:
2901 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
2902 IEEE80211_HE_6GHZ_CAP_SM_PS);
2903 break;
2904 }
2905
2906 pos = skb_put(skb, 2 + 1 + sizeof(cap));
2907 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
2908 pos + 2 + 1 + sizeof(cap));
2909}
2910
2911u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2912 const struct cfg80211_chan_def *chandef,
2913 u16 prot_mode, bool rifs_mode)
2914{
2915 struct ieee80211_ht_operation *ht_oper;
2916 /* Build HT Information */
2917 *pos++ = WLAN_EID_HT_OPERATION;
2918 *pos++ = sizeof(struct ieee80211_ht_operation);
2919 ht_oper = (struct ieee80211_ht_operation *)pos;
2920 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2921 chandef->chan->center_freq);
2922 switch (chandef->width) {
2923 case NL80211_CHAN_WIDTH_160:
2924 case NL80211_CHAN_WIDTH_80P80:
2925 case NL80211_CHAN_WIDTH_80:
2926 case NL80211_CHAN_WIDTH_40:
2927 if (chandef->center_freq1 > chandef->chan->center_freq)
2928 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2929 else
2930 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2931 break;
2932 default:
2933 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2934 break;
2935 }
2936 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
2937 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2938 chandef->width != NL80211_CHAN_WIDTH_20)
2939 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
2940
2941 if (rifs_mode)
2942 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2943
2944 ht_oper->operation_mode = cpu_to_le16(prot_mode);
2945 ht_oper->stbc_param = 0x0000;
2946
2947 /* It seems that Basic MCS set and Supported MCS set
2948 are identical for the first 10 bytes */
2949 memset(&ht_oper->basic_set, 0, 16);
2950 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
2951
2952 return pos + sizeof(struct ieee80211_ht_operation);
2953}
2954
2955void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2956 const struct cfg80211_chan_def *chandef)
2957{
2958 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
2959 *pos++ = 3; /* IE length */
2960 /* New channel width */
2961 switch (chandef->width) {
2962 case NL80211_CHAN_WIDTH_80:
2963 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
2964 break;
2965 case NL80211_CHAN_WIDTH_160:
2966 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
2967 break;
2968 case NL80211_CHAN_WIDTH_80P80:
2969 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2970 break;
2971 default:
2972 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
2973 }
2974
2975 /* new center frequency segment 0 */
2976 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
2977 /* new center frequency segment 1 */
2978 if (chandef->center_freq2)
2979 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
2980 else
2981 *pos++ = 0;
2982}
2983
2984u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2985 const struct cfg80211_chan_def *chandef)
2986{
2987 struct ieee80211_vht_operation *vht_oper;
2988
2989 *pos++ = WLAN_EID_VHT_OPERATION;
2990 *pos++ = sizeof(struct ieee80211_vht_operation);
2991 vht_oper = (struct ieee80211_vht_operation *)pos;
2992 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
2993 chandef->center_freq1);
2994 if (chandef->center_freq2)
2995 vht_oper->center_freq_seg1_idx =
2996 ieee80211_frequency_to_channel(chandef->center_freq2);
2997 else
2998 vht_oper->center_freq_seg1_idx = 0x00;
2999
3000 switch (chandef->width) {
3001 case NL80211_CHAN_WIDTH_160:
3002 /*
3003 * Convert 160 MHz channel width to new style as interop
3004 * workaround.
3005 */
3006 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3007 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3008 if (chandef->chan->center_freq < chandef->center_freq1)
3009 vht_oper->center_freq_seg0_idx -= 8;
3010 else
3011 vht_oper->center_freq_seg0_idx += 8;
3012 break;
3013 case NL80211_CHAN_WIDTH_80P80:
3014 /*
3015 * Convert 80+80 MHz channel width to new style as interop
3016 * workaround.
3017 */
3018 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3019 break;
3020 case NL80211_CHAN_WIDTH_80:
3021 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3022 break;
3023 default:
3024 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3025 break;
3026 }
3027
3028 /* don't require special VHT peer rates */
3029 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3030
3031 return pos + sizeof(struct ieee80211_vht_operation);
3032}
3033
3034u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3035{
3036 struct ieee80211_he_operation *he_oper;
3037 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3038 u32 he_oper_params;
3039 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3040
3041 if (chandef->chan->band == NL80211_BAND_6GHZ)
3042 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3043
3044 *pos++ = WLAN_EID_EXTENSION;
3045 *pos++ = ie_len;
3046 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3047
3048 he_oper_params = 0;
3049 he_oper_params |= u32_encode_bits(1023, /* disabled */
3050 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3051 he_oper_params |= u32_encode_bits(1,
3052 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3053 he_oper_params |= u32_encode_bits(1,
3054 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3055 if (chandef->chan->band == NL80211_BAND_6GHZ)
3056 he_oper_params |= u32_encode_bits(1,
3057 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3058
3059 he_oper = (struct ieee80211_he_operation *)pos;
3060 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3061
3062 /* don't require special HE peer rates */
3063 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3064 pos += sizeof(struct ieee80211_he_operation);
3065
3066 if (chandef->chan->band != NL80211_BAND_6GHZ)
3067 goto out;
3068
3069 /* TODO add VHT operational */
3070 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3071 he_6ghz_op->minrate = 6; /* 6 Mbps */
3072 he_6ghz_op->primary =
3073 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3074 he_6ghz_op->ccfs0 =
3075 ieee80211_frequency_to_channel(chandef->center_freq1);
3076 if (chandef->center_freq2)
3077 he_6ghz_op->ccfs1 =
3078 ieee80211_frequency_to_channel(chandef->center_freq2);
3079 else
3080 he_6ghz_op->ccfs1 = 0;
3081
3082 switch (chandef->width) {
3083 case NL80211_CHAN_WIDTH_160:
3084 /* Convert 160 MHz channel width to new style as interop
3085 * workaround.
3086 */
3087 he_6ghz_op->control =
3088 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3089 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3090 if (chandef->chan->center_freq < chandef->center_freq1)
3091 he_6ghz_op->ccfs0 -= 8;
3092 else
3093 he_6ghz_op->ccfs0 += 8;
3094 fallthrough;
3095 case NL80211_CHAN_WIDTH_80P80:
3096 he_6ghz_op->control =
3097 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3098 break;
3099 case NL80211_CHAN_WIDTH_80:
3100 he_6ghz_op->control =
3101 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3102 break;
3103 case NL80211_CHAN_WIDTH_40:
3104 he_6ghz_op->control =
3105 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3106 break;
3107 default:
3108 he_6ghz_op->control =
3109 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3110 break;
3111 }
3112
3113 pos += sizeof(struct ieee80211_he_6ghz_oper);
3114
3115out:
3116 return pos;
3117}
3118
3119bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3120 struct cfg80211_chan_def *chandef)
3121{
3122 enum nl80211_channel_type channel_type;
3123
3124 if (!ht_oper)
3125 return false;
3126
3127 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3128 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3129 channel_type = NL80211_CHAN_HT20;
3130 break;
3131 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3132 channel_type = NL80211_CHAN_HT40PLUS;
3133 break;
3134 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3135 channel_type = NL80211_CHAN_HT40MINUS;
3136 break;
3137 default:
3138 channel_type = NL80211_CHAN_NO_HT;
3139 return false;
3140 }
3141
3142 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3143 return true;
3144}
3145
3146bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3147 const struct ieee80211_vht_operation *oper,
3148 const struct ieee80211_ht_operation *htop,
3149 struct cfg80211_chan_def *chandef)
3150{
3151 struct cfg80211_chan_def new = *chandef;
3152 int cf0, cf1;
3153 int ccfs0, ccfs1, ccfs2;
3154 int ccf0, ccf1;
3155 u32 vht_cap;
3156 bool support_80_80 = false;
3157 bool support_160 = false;
3158 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3159 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3160 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3161 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3162
3163 if (!oper || !htop)
3164 return false;
3165
3166 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3167 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3168 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3169 support_80_80 = ((vht_cap &
3170 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3171 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3172 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3173 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3174 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3175 ccfs0 = oper->center_freq_seg0_idx;
3176 ccfs1 = oper->center_freq_seg1_idx;
3177 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3178 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3179 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3180
3181 ccf0 = ccfs0;
3182
3183 /* if not supported, parse as though we didn't understand it */
3184 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3185 ext_nss_bw_supp = 0;
3186
3187 /*
3188 * Cf. IEEE 802.11 Table 9-250
3189 *
3190 * We really just consider that because it's inefficient to connect
3191 * at a higher bandwidth than we'll actually be able to use.
3192 */
3193 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3194 default:
3195 case 0x00:
3196 ccf1 = 0;
3197 support_160 = false;
3198 support_80_80 = false;
3199 break;
3200 case 0x01:
3201 support_80_80 = false;
3202 fallthrough;
3203 case 0x02:
3204 case 0x03:
3205 ccf1 = ccfs2;
3206 break;
3207 case 0x10:
3208 ccf1 = ccfs1;
3209 break;
3210 case 0x11:
3211 case 0x12:
3212 if (!ccfs1)
3213 ccf1 = ccfs2;
3214 else
3215 ccf1 = ccfs1;
3216 break;
3217 case 0x13:
3218 case 0x20:
3219 case 0x23:
3220 ccf1 = ccfs1;
3221 break;
3222 }
3223
3224 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3225 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3226
3227 switch (oper->chan_width) {
3228 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3229 /* just use HT information directly */
3230 break;
3231 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3232 new.width = NL80211_CHAN_WIDTH_80;
3233 new.center_freq1 = cf0;
3234 /* If needed, adjust based on the newer interop workaround. */
3235 if (ccf1) {
3236 unsigned int diff;
3237
3238 diff = abs(ccf1 - ccf0);
3239 if ((diff == 8) && support_160) {
3240 new.width = NL80211_CHAN_WIDTH_160;
3241 new.center_freq1 = cf1;
3242 } else if ((diff > 8) && support_80_80) {
3243 new.width = NL80211_CHAN_WIDTH_80P80;
3244 new.center_freq2 = cf1;
3245 }
3246 }
3247 break;
3248 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3249 /* deprecated encoding */
3250 new.width = NL80211_CHAN_WIDTH_160;
3251 new.center_freq1 = cf0;
3252 break;
3253 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3254 /* deprecated encoding */
3255 new.width = NL80211_CHAN_WIDTH_80P80;
3256 new.center_freq1 = cf0;
3257 new.center_freq2 = cf1;
3258 break;
3259 default:
3260 return false;
3261 }
3262
3263 if (!cfg80211_chandef_valid(&new))
3264 return false;
3265
3266 *chandef = new;
3267 return true;
3268}
3269
3270bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3271 const struct ieee80211_he_operation *he_oper,
3272 struct cfg80211_chan_def *chandef)
3273{
3274 struct ieee80211_local *local = sdata->local;
3275 struct ieee80211_supported_band *sband;
3276 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3277 const struct ieee80211_sta_he_cap *he_cap;
3278 struct cfg80211_chan_def he_chandef = *chandef;
3279 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3280 bool support_80_80, support_160;
3281 u8 he_phy_cap;
3282 u32 freq;
3283
3284 if (chandef->chan->band != NL80211_BAND_6GHZ)
3285 return true;
3286
3287 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3288
3289 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3290 if (!he_cap) {
3291 sdata_info(sdata, "Missing iftype sband data/HE cap");
3292 return false;
3293 }
3294
3295 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3296 support_160 =
3297 he_phy_cap &
3298 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3299 support_80_80 =
3300 he_phy_cap &
3301 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3302
3303 if (!he_oper) {
3304 sdata_info(sdata,
3305 "HE is not advertised on (on %d MHz), expect issues\n",
3306 chandef->chan->center_freq);
3307 return false;
3308 }
3309
3310 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3311
3312 if (!he_6ghz_oper) {
3313 sdata_info(sdata,
3314 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3315 chandef->chan->center_freq);
3316 return false;
3317 }
3318
3319 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3320 NL80211_BAND_6GHZ);
3321 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3322
3323 switch (u8_get_bits(he_6ghz_oper->control,
3324 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3325 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3326 he_chandef.width = NL80211_CHAN_WIDTH_20;
3327 break;
3328 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3329 he_chandef.width = NL80211_CHAN_WIDTH_40;
3330 break;
3331 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3332 he_chandef.width = NL80211_CHAN_WIDTH_80;
3333 break;
3334 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3335 he_chandef.width = NL80211_CHAN_WIDTH_80;
3336 if (!he_6ghz_oper->ccfs1)
3337 break;
3338 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3339 if (support_160)
3340 he_chandef.width = NL80211_CHAN_WIDTH_160;
3341 } else {
3342 if (support_80_80)
3343 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3344 }
3345 break;
3346 }
3347
3348 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3349 he_chandef.center_freq1 =
3350 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3351 NL80211_BAND_6GHZ);
3352 } else {
3353 he_chandef.center_freq1 =
3354 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3355 NL80211_BAND_6GHZ);
3356 if (support_80_80 || support_160)
3357 he_chandef.center_freq2 =
3358 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3359 NL80211_BAND_6GHZ);
3360 }
3361
3362 if (!cfg80211_chandef_valid(&he_chandef)) {
3363 sdata_info(sdata,
3364 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3365 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3366 he_chandef.width,
3367 he_chandef.center_freq1,
3368 he_chandef.center_freq2);
3369 return false;
3370 }
3371
3372 *chandef = he_chandef;
3373
3374 return true;
3375}
3376
3377int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3378 const struct ieee80211_supported_band *sband,
3379 const u8 *srates, int srates_len, u32 *rates)
3380{
3381 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3382 int shift = ieee80211_chandef_get_shift(chandef);
3383 struct ieee80211_rate *br;
3384 int brate, rate, i, j, count = 0;
3385
3386 *rates = 0;
3387
3388 for (i = 0; i < srates_len; i++) {
3389 rate = srates[i] & 0x7f;
3390
3391 for (j = 0; j < sband->n_bitrates; j++) {
3392 br = &sband->bitrates[j];
3393 if ((rate_flags & br->flags) != rate_flags)
3394 continue;
3395
3396 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3397 if (brate == rate) {
3398 *rates |= BIT(j);
3399 count++;
3400 break;
3401 }
3402 }
3403 }
3404 return count;
3405}
3406
3407int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3408 struct sk_buff *skb, bool need_basic,
3409 enum nl80211_band band)
3410{
3411 struct ieee80211_local *local = sdata->local;
3412 struct ieee80211_supported_band *sband;
3413 int rate, shift;
3414 u8 i, rates, *pos;
3415 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3416 u32 rate_flags;
3417
3418 shift = ieee80211_vif_get_shift(&sdata->vif);
3419 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3420 sband = local->hw.wiphy->bands[band];
3421 rates = 0;
3422 for (i = 0; i < sband->n_bitrates; i++) {
3423 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3424 continue;
3425 rates++;
3426 }
3427 if (rates > 8)
3428 rates = 8;
3429
3430 if (skb_tailroom(skb) < rates + 2)
3431 return -ENOMEM;
3432
3433 pos = skb_put(skb, rates + 2);
3434 *pos++ = WLAN_EID_SUPP_RATES;
3435 *pos++ = rates;
3436 for (i = 0; i < rates; i++) {
3437 u8 basic = 0;
3438 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3439 continue;
3440
3441 if (need_basic && basic_rates & BIT(i))
3442 basic = 0x80;
3443 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3444 5 * (1 << shift));
3445 *pos++ = basic | (u8) rate;
3446 }
3447
3448 return 0;
3449}
3450
3451int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3452 struct sk_buff *skb, bool need_basic,
3453 enum nl80211_band band)
3454{
3455 struct ieee80211_local *local = sdata->local;
3456 struct ieee80211_supported_band *sband;
3457 int rate, shift;
3458 u8 i, exrates, *pos;
3459 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3460 u32 rate_flags;
3461
3462 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3463 shift = ieee80211_vif_get_shift(&sdata->vif);
3464
3465 sband = local->hw.wiphy->bands[band];
3466 exrates = 0;
3467 for (i = 0; i < sband->n_bitrates; i++) {
3468 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3469 continue;
3470 exrates++;
3471 }
3472
3473 if (exrates > 8)
3474 exrates -= 8;
3475 else
3476 exrates = 0;
3477
3478 if (skb_tailroom(skb) < exrates + 2)
3479 return -ENOMEM;
3480
3481 if (exrates) {
3482 pos = skb_put(skb, exrates + 2);
3483 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3484 *pos++ = exrates;
3485 for (i = 8; i < sband->n_bitrates; i++) {
3486 u8 basic = 0;
3487 if ((rate_flags & sband->bitrates[i].flags)
3488 != rate_flags)
3489 continue;
3490 if (need_basic && basic_rates & BIT(i))
3491 basic = 0x80;
3492 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3493 5 * (1 << shift));
3494 *pos++ = basic | (u8) rate;
3495 }
3496 }
3497 return 0;
3498}
3499
3500int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3501{
3502 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3503 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3504
3505 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3506 /* non-managed type inferfaces */
3507 return 0;
3508 }
3509 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3510}
3511EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3512
3513u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3514{
3515 if (!mcs)
3516 return 1;
3517
3518 /* TODO: consider rx_highest */
3519
3520 if (mcs->rx_mask[3])
3521 return 4;
3522 if (mcs->rx_mask[2])
3523 return 3;
3524 if (mcs->rx_mask[1])
3525 return 2;
3526 return 1;
3527}
3528
3529/**
3530 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3531 * @local: mac80211 hw info struct
3532 * @status: RX status
3533 * @mpdu_len: total MPDU length (including FCS)
3534 * @mpdu_offset: offset into MPDU to calculate timestamp at
3535 *
3536 * This function calculates the RX timestamp at the given MPDU offset, taking
3537 * into account what the RX timestamp was. An offset of 0 will just normalize
3538 * the timestamp to TSF at beginning of MPDU reception.
3539 */
3540u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3541 struct ieee80211_rx_status *status,
3542 unsigned int mpdu_len,
3543 unsigned int mpdu_offset)
3544{
3545 u64 ts = status->mactime;
3546 struct rate_info ri;
3547 u16 rate;
3548
3549 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3550 return 0;
3551
3552 memset(&ri, 0, sizeof(ri));
3553
3554 ri.bw = status->bw;
3555
3556 /* Fill cfg80211 rate info */
3557 switch (status->encoding) {
3558 case RX_ENC_HT:
3559 ri.mcs = status->rate_idx;
3560 ri.flags |= RATE_INFO_FLAGS_MCS;
3561 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3562 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3563 break;
3564 case RX_ENC_VHT:
3565 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3566 ri.mcs = status->rate_idx;
3567 ri.nss = status->nss;
3568 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3569 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3570 break;
3571 default:
3572 WARN_ON(1);
3573 fallthrough;
3574 case RX_ENC_LEGACY: {
3575 struct ieee80211_supported_band *sband;
3576 int shift = 0;
3577 int bitrate;
3578
3579 switch (status->bw) {
3580 case RATE_INFO_BW_10:
3581 shift = 1;
3582 break;
3583 case RATE_INFO_BW_5:
3584 shift = 2;
3585 break;
3586 }
3587
3588 sband = local->hw.wiphy->bands[status->band];
3589 bitrate = sband->bitrates[status->rate_idx].bitrate;
3590 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3591
3592 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3593 /* TODO: handle HT/VHT preambles */
3594 if (status->band == NL80211_BAND_5GHZ) {
3595 ts += 20 << shift;
3596 mpdu_offset += 2;
3597 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3598 ts += 96;
3599 } else {
3600 ts += 192;
3601 }
3602 }
3603 break;
3604 }
3605 }
3606
3607 rate = cfg80211_calculate_bitrate(&ri);
3608 if (WARN_ONCE(!rate,
3609 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3610 (unsigned long long)status->flag, status->rate_idx,
3611 status->nss))
3612 return 0;
3613
3614 /* rewind from end of MPDU */
3615 if (status->flag & RX_FLAG_MACTIME_END)
3616 ts -= mpdu_len * 8 * 10 / rate;
3617
3618 ts += mpdu_offset * 8 * 10 / rate;
3619
3620 return ts;
3621}
3622
3623void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3624{
3625 struct ieee80211_sub_if_data *sdata;
3626 struct cfg80211_chan_def chandef;
3627
3628 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3629 ASSERT_RTNL();
3630
3631 mutex_lock(&local->mtx);
3632 list_for_each_entry(sdata, &local->interfaces, list) {
3633 /* it might be waiting for the local->mtx, but then
3634 * by the time it gets it, sdata->wdev.cac_started
3635 * will no longer be true
3636 */
3637 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3638
3639 if (sdata->wdev.cac_started) {
3640 chandef = sdata->vif.bss_conf.chandef;
3641 ieee80211_vif_release_channel(sdata);
3642 cfg80211_cac_event(sdata->dev,
3643 &chandef,
3644 NL80211_RADAR_CAC_ABORTED,
3645 GFP_KERNEL);
3646 }
3647 }
3648 mutex_unlock(&local->mtx);
3649}
3650
3651void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3652{
3653 struct ieee80211_local *local =
3654 container_of(work, struct ieee80211_local, radar_detected_work);
3655 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3656 struct ieee80211_chanctx *ctx;
3657 int num_chanctx = 0;
3658
3659 mutex_lock(&local->chanctx_mtx);
3660 list_for_each_entry(ctx, &local->chanctx_list, list) {
3661 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3662 continue;
3663
3664 num_chanctx++;
3665 chandef = ctx->conf.def;
3666 }
3667 mutex_unlock(&local->chanctx_mtx);
3668
3669 rtnl_lock();
3670 ieee80211_dfs_cac_cancel(local);
3671 rtnl_unlock();
3672
3673 if (num_chanctx > 1)
3674 /* XXX: multi-channel is not supported yet */
3675 WARN_ON(1);
3676 else
3677 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
3678}
3679
3680void ieee80211_radar_detected(struct ieee80211_hw *hw)
3681{
3682 struct ieee80211_local *local = hw_to_local(hw);
3683
3684 trace_api_radar_detected(local);
3685
3686 schedule_work(&local->radar_detected_work);
3687}
3688EXPORT_SYMBOL(ieee80211_radar_detected);
3689
3690u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3691{
3692 u32 ret;
3693 int tmp;
3694
3695 switch (c->width) {
3696 case NL80211_CHAN_WIDTH_20:
3697 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3698 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3699 break;
3700 case NL80211_CHAN_WIDTH_40:
3701 c->width = NL80211_CHAN_WIDTH_20;
3702 c->center_freq1 = c->chan->center_freq;
3703 ret = IEEE80211_STA_DISABLE_40MHZ |
3704 IEEE80211_STA_DISABLE_VHT;
3705 break;
3706 case NL80211_CHAN_WIDTH_80:
3707 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3708 /* n_P40 */
3709 tmp /= 2;
3710 /* freq_P40 */
3711 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3712 c->width = NL80211_CHAN_WIDTH_40;
3713 ret = IEEE80211_STA_DISABLE_VHT;
3714 break;
3715 case NL80211_CHAN_WIDTH_80P80:
3716 c->center_freq2 = 0;
3717 c->width = NL80211_CHAN_WIDTH_80;
3718 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3719 IEEE80211_STA_DISABLE_160MHZ;
3720 break;
3721 case NL80211_CHAN_WIDTH_160:
3722 /* n_P20 */
3723 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3724 /* n_P80 */
3725 tmp /= 4;
3726 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3727 c->width = NL80211_CHAN_WIDTH_80;
3728 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3729 IEEE80211_STA_DISABLE_160MHZ;
3730 break;
3731 default:
3732 case NL80211_CHAN_WIDTH_20_NOHT:
3733 WARN_ON_ONCE(1);
3734 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3735 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3736 break;
3737 case NL80211_CHAN_WIDTH_1:
3738 case NL80211_CHAN_WIDTH_2:
3739 case NL80211_CHAN_WIDTH_4:
3740 case NL80211_CHAN_WIDTH_8:
3741 case NL80211_CHAN_WIDTH_16:
3742 case NL80211_CHAN_WIDTH_5:
3743 case NL80211_CHAN_WIDTH_10:
3744 WARN_ON_ONCE(1);
3745 /* keep c->width */
3746 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3747 break;
3748 }
3749
3750 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3751
3752 return ret;
3753}
3754
3755/*
3756 * Returns true if smps_mode_new is strictly more restrictive than
3757 * smps_mode_old.
3758 */
3759bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3760 enum ieee80211_smps_mode smps_mode_new)
3761{
3762 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3763 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3764 return false;
3765
3766 switch (smps_mode_old) {
3767 case IEEE80211_SMPS_STATIC:
3768 return false;
3769 case IEEE80211_SMPS_DYNAMIC:
3770 return smps_mode_new == IEEE80211_SMPS_STATIC;
3771 case IEEE80211_SMPS_OFF:
3772 return smps_mode_new != IEEE80211_SMPS_OFF;
3773 default:
3774 WARN_ON(1);
3775 }
3776
3777 return false;
3778}
3779
3780int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3781 struct cfg80211_csa_settings *csa_settings)
3782{
3783 struct sk_buff *skb;
3784 struct ieee80211_mgmt *mgmt;
3785 struct ieee80211_local *local = sdata->local;
3786 int freq;
3787 int hdr_len = offsetofend(struct ieee80211_mgmt,
3788 u.action.u.chan_switch);
3789 u8 *pos;
3790
3791 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3792 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3793 return -EOPNOTSUPP;
3794
3795 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3796 5 + /* channel switch announcement element */
3797 3 + /* secondary channel offset element */
3798 5 + /* wide bandwidth channel switch announcement */
3799 8); /* mesh channel switch parameters element */
3800 if (!skb)
3801 return -ENOMEM;
3802
3803 skb_reserve(skb, local->tx_headroom);
3804 mgmt = skb_put_zero(skb, hdr_len);
3805 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3806 IEEE80211_STYPE_ACTION);
3807
3808 eth_broadcast_addr(mgmt->da);
3809 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3810 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3811 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3812 } else {
3813 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3814 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3815 }
3816 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3817 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3818 pos = skb_put(skb, 5);
3819 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3820 *pos++ = 3; /* IE length */
3821 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3822 freq = csa_settings->chandef.chan->center_freq;
3823 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3824 *pos++ = csa_settings->count; /* count */
3825
3826 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3827 enum nl80211_channel_type ch_type;
3828
3829 skb_put(skb, 3);
3830 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3831 *pos++ = 1; /* IE length */
3832 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3833 if (ch_type == NL80211_CHAN_HT40PLUS)
3834 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3835 else
3836 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3837 }
3838
3839 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3840 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3841
3842 skb_put(skb, 8);
3843 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3844 *pos++ = 6; /* IE length */
3845 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3846 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3847 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3848 *pos++ |= csa_settings->block_tx ?
3849 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3850 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3851 pos += 2;
3852 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
3853 pos += 2;
3854 }
3855
3856 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3857 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3858 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3859 skb_put(skb, 5);
3860 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3861 }
3862
3863 ieee80211_tx_skb(sdata, skb);
3864 return 0;
3865}
3866
3867bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3868{
3869 return !(cs == NULL || cs->cipher == 0 ||
3870 cs->hdr_len < cs->pn_len + cs->pn_off ||
3871 cs->hdr_len <= cs->key_idx_off ||
3872 cs->key_idx_shift > 7 ||
3873 cs->key_idx_mask == 0);
3874}
3875
3876bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
3877{
3878 int i;
3879
3880 /* Ensure we have enough iftype bitmap space for all iftype values */
3881 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
3882
3883 for (i = 0; i < n; i++)
3884 if (!ieee80211_cs_valid(&cs[i]))
3885 return false;
3886
3887 return true;
3888}
3889
3890const struct ieee80211_cipher_scheme *
3891ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
3892 enum nl80211_iftype iftype)
3893{
3894 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
3895 int n = local->hw.n_cipher_schemes;
3896 int i;
3897 const struct ieee80211_cipher_scheme *cs = NULL;
3898
3899 for (i = 0; i < n; i++) {
3900 if (l[i].cipher == cipher) {
3901 cs = &l[i];
3902 break;
3903 }
3904 }
3905
3906 if (!cs || !(cs->iftype & BIT(iftype)))
3907 return NULL;
3908
3909 return cs;
3910}
3911
3912int ieee80211_cs_headroom(struct ieee80211_local *local,
3913 struct cfg80211_crypto_settings *crypto,
3914 enum nl80211_iftype iftype)
3915{
3916 const struct ieee80211_cipher_scheme *cs;
3917 int headroom = IEEE80211_ENCRYPT_HEADROOM;
3918 int i;
3919
3920 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
3921 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
3922 iftype);
3923
3924 if (cs && headroom < cs->hdr_len)
3925 headroom = cs->hdr_len;
3926 }
3927
3928 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
3929 if (cs && headroom < cs->hdr_len)
3930 headroom = cs->hdr_len;
3931
3932 return headroom;
3933}
3934
3935static bool
3936ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3937{
3938 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3939 int skip;
3940
3941 if (end > 0)
3942 return false;
3943
3944 /* One shot NOA */
3945 if (data->count[i] == 1)
3946 return false;
3947
3948 if (data->desc[i].interval == 0)
3949 return false;
3950
3951 /* End time is in the past, check for repetitions */
3952 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3953 if (data->count[i] < 255) {
3954 if (data->count[i] <= skip) {
3955 data->count[i] = 0;
3956 return false;
3957 }
3958
3959 data->count[i] -= skip;
3960 }
3961
3962 data->desc[i].start += skip * data->desc[i].interval;
3963
3964 return true;
3965}
3966
3967static bool
3968ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3969 s32 *offset)
3970{
3971 bool ret = false;
3972 int i;
3973
3974 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3975 s32 cur;
3976
3977 if (!data->count[i])
3978 continue;
3979
3980 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3981 ret = true;
3982
3983 cur = data->desc[i].start - tsf;
3984 if (cur > *offset)
3985 continue;
3986
3987 cur = data->desc[i].start + data->desc[i].duration - tsf;
3988 if (cur > *offset)
3989 *offset = cur;
3990 }
3991
3992 return ret;
3993}
3994
3995static u32
3996ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3997{
3998 s32 offset = 0;
3999 int tries = 0;
4000 /*
4001 * arbitrary limit, used to avoid infinite loops when combined NoA
4002 * descriptors cover the full time period.
4003 */
4004 int max_tries = 5;
4005
4006 ieee80211_extend_absent_time(data, tsf, &offset);
4007 do {
4008 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4009 break;
4010
4011 tries++;
4012 } while (tries < max_tries);
4013
4014 return offset;
4015}
4016
4017void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4018{
4019 u32 next_offset = BIT(31) - 1;
4020 int i;
4021
4022 data->absent = 0;
4023 data->has_next_tsf = false;
4024 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4025 s32 start;
4026
4027 if (!data->count[i])
4028 continue;
4029
4030 ieee80211_extend_noa_desc(data, tsf, i);
4031 start = data->desc[i].start - tsf;
4032 if (start <= 0)
4033 data->absent |= BIT(i);
4034
4035 if (next_offset > start)
4036 next_offset = start;
4037
4038 data->has_next_tsf = true;
4039 }
4040
4041 if (data->absent)
4042 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4043
4044 data->next_tsf = tsf + next_offset;
4045}
4046EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4047
4048int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4049 struct ieee80211_noa_data *data, u32 tsf)
4050{
4051 int ret = 0;
4052 int i;
4053
4054 memset(data, 0, sizeof(*data));
4055
4056 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4057 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4058
4059 if (!desc->count || !desc->duration)
4060 continue;
4061
4062 data->count[i] = desc->count;
4063 data->desc[i].start = le32_to_cpu(desc->start_time);
4064 data->desc[i].duration = le32_to_cpu(desc->duration);
4065 data->desc[i].interval = le32_to_cpu(desc->interval);
4066
4067 if (data->count[i] > 1 &&
4068 data->desc[i].interval < data->desc[i].duration)
4069 continue;
4070
4071 ieee80211_extend_noa_desc(data, tsf, i);
4072 ret++;
4073 }
4074
4075 if (ret)
4076 ieee80211_update_p2p_noa(data, tsf);
4077
4078 return ret;
4079}
4080EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4081
4082void ieee80211_recalc_dtim(struct ieee80211_local *local,
4083 struct ieee80211_sub_if_data *sdata)
4084{
4085 u64 tsf = drv_get_tsf(local, sdata);
4086 u64 dtim_count = 0;
4087 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4088 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4089 struct ps_data *ps;
4090 u8 bcns_from_dtim;
4091
4092 if (tsf == -1ULL || !beacon_int || !dtim_period)
4093 return;
4094
4095 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4096 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4097 if (!sdata->bss)
4098 return;
4099
4100 ps = &sdata->bss->ps;
4101 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4102 ps = &sdata->u.mesh.ps;
4103 } else {
4104 return;
4105 }
4106
4107 /*
4108 * actually finds last dtim_count, mac80211 will update in
4109 * __beacon_add_tim().
4110 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4111 */
4112 do_div(tsf, beacon_int);
4113 bcns_from_dtim = do_div(tsf, dtim_period);
4114 /* just had a DTIM */
4115 if (!bcns_from_dtim)
4116 dtim_count = 0;
4117 else
4118 dtim_count = dtim_period - bcns_from_dtim;
4119
4120 ps->dtim_count = dtim_count;
4121}
4122
4123static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4124 struct ieee80211_chanctx *ctx)
4125{
4126 struct ieee80211_sub_if_data *sdata;
4127 u8 radar_detect = 0;
4128
4129 lockdep_assert_held(&local->chanctx_mtx);
4130
4131 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4132 return 0;
4133
4134 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4135 if (sdata->reserved_radar_required)
4136 radar_detect |= BIT(sdata->reserved_chandef.width);
4137
4138 /*
4139 * An in-place reservation context should not have any assigned vifs
4140 * until it replaces the other context.
4141 */
4142 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4143 !list_empty(&ctx->assigned_vifs));
4144
4145 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4146 if (sdata->radar_required)
4147 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4148
4149 return radar_detect;
4150}
4151
4152int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4153 const struct cfg80211_chan_def *chandef,
4154 enum ieee80211_chanctx_mode chanmode,
4155 u8 radar_detect)
4156{
4157 struct ieee80211_local *local = sdata->local;
4158 struct ieee80211_sub_if_data *sdata_iter;
4159 enum nl80211_iftype iftype = sdata->wdev.iftype;
4160 struct ieee80211_chanctx *ctx;
4161 int total = 1;
4162 struct iface_combination_params params = {
4163 .radar_detect = radar_detect,
4164 };
4165
4166 lockdep_assert_held(&local->chanctx_mtx);
4167
4168 if (WARN_ON(hweight32(radar_detect) > 1))
4169 return -EINVAL;
4170
4171 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4172 !chandef->chan))
4173 return -EINVAL;
4174
4175 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4176 return -EINVAL;
4177
4178 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4179 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4180 /*
4181 * always passing this is harmless, since it'll be the
4182 * same value that cfg80211 finds if it finds the same
4183 * interface ... and that's always allowed
4184 */
4185 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4186 }
4187
4188 /* Always allow software iftypes */
4189 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4190 if (radar_detect)
4191 return -EINVAL;
4192 return 0;
4193 }
4194
4195 if (chandef)
4196 params.num_different_channels = 1;
4197
4198 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4199 params.iftype_num[iftype] = 1;
4200
4201 list_for_each_entry(ctx, &local->chanctx_list, list) {
4202 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4203 continue;
4204 params.radar_detect |=
4205 ieee80211_chanctx_radar_detect(local, ctx);
4206 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4207 params.num_different_channels++;
4208 continue;
4209 }
4210 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4211 cfg80211_chandef_compatible(chandef,
4212 &ctx->conf.def))
4213 continue;
4214 params.num_different_channels++;
4215 }
4216
4217 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4218 struct wireless_dev *wdev_iter;
4219
4220 wdev_iter = &sdata_iter->wdev;
4221
4222 if (sdata_iter == sdata ||
4223 !ieee80211_sdata_running(sdata_iter) ||
4224 cfg80211_iftype_allowed(local->hw.wiphy,
4225 wdev_iter->iftype, 0, 1))
4226 continue;
4227
4228 params.iftype_num[wdev_iter->iftype]++;
4229 total++;
4230 }
4231
4232 if (total == 1 && !params.radar_detect)
4233 return 0;
4234
4235 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4236}
4237
4238static void
4239ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4240 void *data)
4241{
4242 u32 *max_num_different_channels = data;
4243
4244 *max_num_different_channels = max(*max_num_different_channels,
4245 c->num_different_channels);
4246}
4247
4248int ieee80211_max_num_channels(struct ieee80211_local *local)
4249{
4250 struct ieee80211_sub_if_data *sdata;
4251 struct ieee80211_chanctx *ctx;
4252 u32 max_num_different_channels = 1;
4253 int err;
4254 struct iface_combination_params params = {0};
4255
4256 lockdep_assert_held(&local->chanctx_mtx);
4257
4258 list_for_each_entry(ctx, &local->chanctx_list, list) {
4259 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4260 continue;
4261
4262 params.num_different_channels++;
4263
4264 params.radar_detect |=
4265 ieee80211_chanctx_radar_detect(local, ctx);
4266 }
4267
4268 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4269 params.iftype_num[sdata->wdev.iftype]++;
4270
4271 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4272 ieee80211_iter_max_chans,
4273 &max_num_different_channels);
4274 if (err < 0)
4275 return err;
4276
4277 return max_num_different_channels;
4278}
4279
4280u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4281{
4282 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4283 *buf++ = 7; /* len */
4284 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4285 *buf++ = 0x50;
4286 *buf++ = 0xf2;
4287 *buf++ = 2; /* WME */
4288 *buf++ = 0; /* WME info */
4289 *buf++ = 1; /* WME ver */
4290 *buf++ = qosinfo; /* U-APSD no in use */
4291
4292 return buf;
4293}
4294
4295void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4296 unsigned long *frame_cnt,
4297 unsigned long *byte_cnt)
4298{
4299 struct txq_info *txqi = to_txq_info(txq);
4300 u32 frag_cnt = 0, frag_bytes = 0;
4301 struct sk_buff *skb;
4302
4303 skb_queue_walk(&txqi->frags, skb) {
4304 frag_cnt++;
4305 frag_bytes += skb->len;
4306 }
4307
4308 if (frame_cnt)
4309 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4310
4311 if (byte_cnt)
4312 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4313}
4314EXPORT_SYMBOL(ieee80211_txq_get_depth);
4315
4316const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4317 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4318 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4319 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4320 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4321};