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) 2018-2024 Intel Corporation
10 *
11 * utilities for mac80211
12 */
13
14 #include <net/mac80211.h>
15 #include <linux/netdevice.h>
16 #include <linux/export.h>
17 #include <linux/types.h>
18 #include <linux/slab.h>
19 #include <linux/skbuff.h>
20 #include <linux/etherdevice.h>
21 #include <linux/if_arp.h>
22 #include <linux/bitmap.h>
23 #include <linux/crc32.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
26 #include <net/rtnetlink.h>
27 #include <kunit/visibility.h>
28
29 #include "ieee80211_i.h"
30 #include "driver-ops.h"
31 #include "rate.h"
32 #include "mesh.h"
33 #include "wme.h"
34 #include "led.h"
35 #include "wep.h"
36
37 /* privid for wiphys to determine whether they belong to us or not */
38 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
39
40 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
41 {
42 struct ieee80211_local *local;
43
44 local = wiphy_priv(wiphy);
45 return &local->hw;
46 }
47 EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
48
49 const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited = {
50 .mode = IEEE80211_CONN_MODE_EHT,
51 .bw_limit = IEEE80211_CONN_BW_LIMIT_320,
52 };
53
54 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
55 enum nl80211_iftype type)
56 {
57 __le16 fc = hdr->frame_control;
58
59 if (ieee80211_is_data(fc)) {
60 if (len < 24) /* drop incorrect hdr len (data) */
61 return NULL;
62
63 if (ieee80211_has_a4(fc))
64 return NULL;
65 if (ieee80211_has_tods(fc))
66 return hdr->addr1;
67 if (ieee80211_has_fromds(fc))
68 return hdr->addr2;
69
70 return hdr->addr3;
71 }
72
73 if (ieee80211_is_s1g_beacon(fc)) {
74 struct ieee80211_ext *ext = (void *) hdr;
75
76 return ext->u.s1g_beacon.sa;
77 }
78
79 if (ieee80211_is_mgmt(fc)) {
80 if (len < 24) /* drop incorrect hdr len (mgmt) */
81 return NULL;
82 return hdr->addr3;
83 }
84
85 if (ieee80211_is_ctl(fc)) {
86 if (ieee80211_is_pspoll(fc))
87 return hdr->addr1;
88
89 if (ieee80211_is_back_req(fc)) {
90 switch (type) {
91 case NL80211_IFTYPE_STATION:
92 return hdr->addr2;
93 case NL80211_IFTYPE_AP:
94 case NL80211_IFTYPE_AP_VLAN:
95 return hdr->addr1;
96 default:
97 break; /* fall through to the return */
98 }
99 }
100 }
101
102 return NULL;
103 }
104 EXPORT_SYMBOL(ieee80211_get_bssid);
105
106 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
107 {
108 struct sk_buff *skb;
109 struct ieee80211_hdr *hdr;
110
111 skb_queue_walk(&tx->skbs, skb) {
112 hdr = (struct ieee80211_hdr *) skb->data;
113 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
114 }
115 }
116
117 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
118 int rate, int erp, int short_preamble)
119 {
120 int dur;
121
122 /* calculate duration (in microseconds, rounded up to next higher
123 * integer if it includes a fractional microsecond) to send frame of
124 * len bytes (does not include FCS) at the given rate. Duration will
125 * also include SIFS.
126 *
127 * rate is in 100 kbps, so divident is multiplied by 10 in the
128 * DIV_ROUND_UP() operations.
129 */
130
131 if (band == NL80211_BAND_5GHZ || erp) {
132 /*
133 * OFDM:
134 *
135 * N_DBPS = DATARATE x 4
136 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
137 * (16 = SIGNAL time, 6 = tail bits)
138 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
139 *
140 * T_SYM = 4 usec
141 * 802.11a - 18.5.2: aSIFSTime = 16 usec
142 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
143 * signal ext = 6 usec
144 */
145 dur = 16; /* SIFS + signal ext */
146 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
147 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
148
149 /* rates should already consider the channel bandwidth,
150 * don't apply divisor again.
151 */
152 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
153 4 * rate); /* T_SYM x N_SYM */
154 } else {
155 /*
156 * 802.11b or 802.11g with 802.11b compatibility:
157 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
158 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
159 *
160 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
161 * aSIFSTime = 10 usec
162 * aPreambleLength = 144 usec or 72 usec with short preamble
163 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
164 */
165 dur = 10; /* aSIFSTime = 10 usec */
166 dur += short_preamble ? (72 + 24) : (144 + 48);
167
168 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
169 }
170
171 return dur;
172 }
173
174 /* Exported duration function for driver use */
175 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
176 struct ieee80211_vif *vif,
177 enum nl80211_band band,
178 size_t frame_len,
179 struct ieee80211_rate *rate)
180 {
181 struct ieee80211_sub_if_data *sdata;
182 u16 dur;
183 int erp;
184 bool short_preamble = false;
185
186 erp = 0;
187 if (vif) {
188 sdata = vif_to_sdata(vif);
189 short_preamble = sdata->vif.bss_conf.use_short_preamble;
190 if (sdata->deflink.operating_11g_mode)
191 erp = rate->flags & IEEE80211_RATE_ERP_G;
192 }
193
194 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
195 short_preamble);
196
197 return cpu_to_le16(dur);
198 }
199 EXPORT_SYMBOL(ieee80211_generic_frame_duration);
200
201 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
202 struct ieee80211_vif *vif, size_t frame_len,
203 const struct ieee80211_tx_info *frame_txctl)
204 {
205 struct ieee80211_local *local = hw_to_local(hw);
206 struct ieee80211_rate *rate;
207 struct ieee80211_sub_if_data *sdata;
208 bool short_preamble;
209 int erp, bitrate;
210 u16 dur;
211 struct ieee80211_supported_band *sband;
212
213 sband = local->hw.wiphy->bands[frame_txctl->band];
214
215 short_preamble = false;
216
217 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
218
219 erp = 0;
220 if (vif) {
221 sdata = vif_to_sdata(vif);
222 short_preamble = sdata->vif.bss_conf.use_short_preamble;
223 if (sdata->deflink.operating_11g_mode)
224 erp = rate->flags & IEEE80211_RATE_ERP_G;
225 }
226
227 bitrate = rate->bitrate;
228
229 /* CTS duration */
230 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
231 erp, short_preamble);
232 /* Data frame duration */
233 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
234 erp, short_preamble);
235 /* ACK duration */
236 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
237 erp, short_preamble);
238
239 return cpu_to_le16(dur);
240 }
241 EXPORT_SYMBOL(ieee80211_rts_duration);
242
243 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
244 struct ieee80211_vif *vif,
245 size_t frame_len,
246 const struct ieee80211_tx_info *frame_txctl)
247 {
248 struct ieee80211_local *local = hw_to_local(hw);
249 struct ieee80211_rate *rate;
250 struct ieee80211_sub_if_data *sdata;
251 bool short_preamble;
252 int erp, bitrate;
253 u16 dur;
254 struct ieee80211_supported_band *sband;
255
256 sband = local->hw.wiphy->bands[frame_txctl->band];
257
258 short_preamble = false;
259
260 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
261 erp = 0;
262 if (vif) {
263 sdata = vif_to_sdata(vif);
264 short_preamble = sdata->vif.bss_conf.use_short_preamble;
265 if (sdata->deflink.operating_11g_mode)
266 erp = rate->flags & IEEE80211_RATE_ERP_G;
267 }
268
269 bitrate = rate->bitrate;
270
271 /* Data frame duration */
272 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
273 erp, short_preamble);
274 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
275 /* ACK duration */
276 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
277 erp, short_preamble);
278 }
279
280 return cpu_to_le16(dur);
281 }
282 EXPORT_SYMBOL(ieee80211_ctstoself_duration);
283
284 static void wake_tx_push_queue(struct ieee80211_local *local,
285 struct ieee80211_sub_if_data *sdata,
286 struct ieee80211_txq *queue)
287 {
288 struct ieee80211_tx_control control = {
289 .sta = queue->sta,
290 };
291 struct sk_buff *skb;
292
293 while (1) {
294 skb = ieee80211_tx_dequeue(&local->hw, queue);
295 if (!skb)
296 break;
297
298 drv_tx(local, &control, skb);
299 }
300 }
301
302 /* wake_tx_queue handler for driver not implementing a custom one*/
303 void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw,
304 struct ieee80211_txq *txq)
305 {
306 struct ieee80211_local *local = hw_to_local(hw);
307 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif);
308 struct ieee80211_txq *queue;
309
310 spin_lock(&local->handle_wake_tx_queue_lock);
311
312 /* Use ieee80211_next_txq() for airtime fairness accounting */
313 ieee80211_txq_schedule_start(hw, txq->ac);
314 while ((queue = ieee80211_next_txq(hw, txq->ac))) {
315 wake_tx_push_queue(local, sdata, queue);
316 ieee80211_return_txq(hw, queue, false);
317 }
318 ieee80211_txq_schedule_end(hw, txq->ac);
319 spin_unlock(&local->handle_wake_tx_queue_lock);
320 }
321 EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue);
322
323 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
324 {
325 struct ieee80211_local *local = sdata->local;
326 struct ieee80211_vif *vif = &sdata->vif;
327 struct fq *fq = &local->fq;
328 struct ps_data *ps = NULL;
329 struct txq_info *txqi;
330 struct sta_info *sta;
331 int i;
332
333 local_bh_disable();
334 spin_lock(&fq->lock);
335
336 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state))
337 goto out;
338
339 if (sdata->vif.type == NL80211_IFTYPE_AP)
340 ps = &sdata->bss->ps;
341
342 list_for_each_entry_rcu(sta, &local->sta_list, list) {
343 if (sdata != sta->sdata)
344 continue;
345
346 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
347 struct ieee80211_txq *txq = sta->sta.txq[i];
348
349 if (!txq)
350 continue;
351
352 txqi = to_txq_info(txq);
353
354 if (ac != txq->ac)
355 continue;
356
357 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY,
358 &txqi->flags))
359 continue;
360
361 spin_unlock(&fq->lock);
362 drv_wake_tx_queue(local, txqi);
363 spin_lock(&fq->lock);
364 }
365 }
366
367 if (!vif->txq)
368 goto out;
369
370 txqi = to_txq_info(vif->txq);
371
372 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ||
373 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
374 goto out;
375
376 spin_unlock(&fq->lock);
377
378 drv_wake_tx_queue(local, txqi);
379 local_bh_enable();
380 return;
381 out:
382 spin_unlock(&fq->lock);
383 local_bh_enable();
384 }
385
386 static void
387 __releases(&local->queue_stop_reason_lock)
388 __acquires(&local->queue_stop_reason_lock)
389 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
390 {
391 struct ieee80211_sub_if_data *sdata;
392 int n_acs = IEEE80211_NUM_ACS;
393 int i;
394
395 rcu_read_lock();
396
397 if (local->hw.queues < IEEE80211_NUM_ACS)
398 n_acs = 1;
399
400 for (i = 0; i < local->hw.queues; i++) {
401 if (local->queue_stop_reasons[i])
402 continue;
403
404 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
405 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
406 int ac;
407
408 for (ac = 0; ac < n_acs; ac++) {
409 int ac_queue = sdata->vif.hw_queue[ac];
410
411 if (ac_queue == i ||
412 sdata->vif.cab_queue == i)
413 __ieee80211_wake_txqs(sdata, ac);
414 }
415 }
416 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
417 }
418
419 rcu_read_unlock();
420 }
421
422 void ieee80211_wake_txqs(struct tasklet_struct *t)
423 {
424 struct ieee80211_local *local = from_tasklet(local, t,
425 wake_txqs_tasklet);
426 unsigned long flags;
427
428 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
429 _ieee80211_wake_txqs(local, &flags);
430 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
431 }
432
433 static 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 tasklet_schedule(&local->tx_pending_tasklet);
465
466 /*
467 * Calling _ieee80211_wake_txqs here can be a problem because it may
468 * release queue_stop_reason_lock which has been taken by
469 * __ieee80211_wake_queue's caller. It is certainly not very nice to
470 * release someone's lock, but it is fine because all the callers of
471 * __ieee80211_wake_queue call it right before releasing the lock.
472 */
473 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
474 tasklet_schedule(&local->wake_txqs_tasklet);
475 else
476 _ieee80211_wake_txqs(local, flags);
477 }
478
479 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
480 enum queue_stop_reason reason,
481 bool refcounted)
482 {
483 struct ieee80211_local *local = hw_to_local(hw);
484 unsigned long flags;
485
486 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
487 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
488 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
489 }
490
491 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
492 {
493 ieee80211_wake_queue_by_reason(hw, queue,
494 IEEE80211_QUEUE_STOP_REASON_DRIVER,
495 false);
496 }
497 EXPORT_SYMBOL(ieee80211_wake_queue);
498
499 static void __ieee80211_stop_queue(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
505 trace_stop_queue(local, queue, reason);
506
507 if (WARN_ON(queue >= hw->queues))
508 return;
509
510 if (!refcounted)
511 local->q_stop_reasons[queue][reason] = 1;
512 else
513 local->q_stop_reasons[queue][reason]++;
514
515 set_bit(reason, &local->queue_stop_reasons[queue]);
516 }
517
518 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
519 enum queue_stop_reason reason,
520 bool refcounted)
521 {
522 struct ieee80211_local *local = hw_to_local(hw);
523 unsigned long flags;
524
525 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
526 __ieee80211_stop_queue(hw, queue, reason, refcounted);
527 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
528 }
529
530 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
531 {
532 ieee80211_stop_queue_by_reason(hw, queue,
533 IEEE80211_QUEUE_STOP_REASON_DRIVER,
534 false);
535 }
536 EXPORT_SYMBOL(ieee80211_stop_queue);
537
538 void ieee80211_add_pending_skb(struct ieee80211_local *local,
539 struct sk_buff *skb)
540 {
541 struct ieee80211_hw *hw = &local->hw;
542 unsigned long flags;
543 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
544 int queue = info->hw_queue;
545
546 if (WARN_ON(!info->control.vif)) {
547 ieee80211_free_txskb(&local->hw, skb);
548 return;
549 }
550
551 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
552 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
553 false);
554 __skb_queue_tail(&local->pending[queue], skb);
555 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
556 false, &flags);
557 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
558 }
559
560 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
561 struct sk_buff_head *skbs)
562 {
563 struct ieee80211_hw *hw = &local->hw;
564 struct sk_buff *skb;
565 unsigned long flags;
566 int queue, i;
567
568 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
569 while ((skb = skb_dequeue(skbs))) {
570 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
571
572 if (WARN_ON(!info->control.vif)) {
573 ieee80211_free_txskb(&local->hw, skb);
574 continue;
575 }
576
577 queue = info->hw_queue;
578
579 __ieee80211_stop_queue(hw, queue,
580 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
581 false);
582
583 __skb_queue_tail(&local->pending[queue], skb);
584 }
585
586 for (i = 0; i < hw->queues; i++)
587 __ieee80211_wake_queue(hw, i,
588 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
589 false, &flags);
590 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
591 }
592
593 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
594 unsigned long queues,
595 enum queue_stop_reason reason,
596 bool refcounted)
597 {
598 struct ieee80211_local *local = hw_to_local(hw);
599 unsigned long flags;
600 int i;
601
602 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
603
604 for_each_set_bit(i, &queues, hw->queues)
605 __ieee80211_stop_queue(hw, i, reason, refcounted);
606
607 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
608 }
609
610 void ieee80211_stop_queues(struct ieee80211_hw *hw)
611 {
612 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
613 IEEE80211_QUEUE_STOP_REASON_DRIVER,
614 false);
615 }
616 EXPORT_SYMBOL(ieee80211_stop_queues);
617
618 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
619 {
620 struct ieee80211_local *local = hw_to_local(hw);
621 unsigned long flags;
622 int ret;
623
624 if (WARN_ON(queue >= hw->queues))
625 return true;
626
627 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
628 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
629 &local->queue_stop_reasons[queue]);
630 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
631 return ret;
632 }
633 EXPORT_SYMBOL(ieee80211_queue_stopped);
634
635 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
636 unsigned long queues,
637 enum queue_stop_reason reason,
638 bool refcounted)
639 {
640 struct ieee80211_local *local = hw_to_local(hw);
641 unsigned long flags;
642 int i;
643
644 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
645
646 for_each_set_bit(i, &queues, hw->queues)
647 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
648
649 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
650 }
651
652 void ieee80211_wake_queues(struct ieee80211_hw *hw)
653 {
654 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
655 IEEE80211_QUEUE_STOP_REASON_DRIVER,
656 false);
657 }
658 EXPORT_SYMBOL(ieee80211_wake_queues);
659
660 static unsigned int
661 ieee80211_get_vif_queues(struct ieee80211_local *local,
662 struct ieee80211_sub_if_data *sdata)
663 {
664 unsigned int queues;
665
666 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
667 int ac;
668
669 queues = 0;
670
671 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
672 queues |= BIT(sdata->vif.hw_queue[ac]);
673 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
674 queues |= BIT(sdata->vif.cab_queue);
675 } else {
676 /* all queues */
677 queues = BIT(local->hw.queues) - 1;
678 }
679
680 return queues;
681 }
682
683 void __ieee80211_flush_queues(struct ieee80211_local *local,
684 struct ieee80211_sub_if_data *sdata,
685 unsigned int queues, bool drop)
686 {
687 if (!local->ops->flush)
688 return;
689
690 /*
691 * If no queue was set, or if the HW doesn't support
692 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
693 */
694 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
695 queues = ieee80211_get_vif_queues(local, sdata);
696
697 ieee80211_stop_queues_by_reason(&local->hw, queues,
698 IEEE80211_QUEUE_STOP_REASON_FLUSH,
699 false);
700
701 if (drop) {
702 struct sta_info *sta;
703
704 /* Purge the queues, so the frames on them won't be
705 * sent during __ieee80211_wake_queue()
706 */
707 list_for_each_entry(sta, &local->sta_list, list) {
708 if (sdata != sta->sdata)
709 continue;
710 ieee80211_purge_sta_txqs(sta);
711 }
712 }
713
714 drv_flush(local, sdata, queues, drop);
715
716 ieee80211_wake_queues_by_reason(&local->hw, queues,
717 IEEE80211_QUEUE_STOP_REASON_FLUSH,
718 false);
719 }
720
721 void ieee80211_flush_queues(struct ieee80211_local *local,
722 struct ieee80211_sub_if_data *sdata, bool drop)
723 {
724 __ieee80211_flush_queues(local, sdata, 0, drop);
725 }
726
727 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
728 struct ieee80211_sub_if_data *sdata,
729 enum queue_stop_reason reason)
730 {
731 ieee80211_stop_queues_by_reason(&local->hw,
732 ieee80211_get_vif_queues(local, sdata),
733 reason, true);
734 }
735
736 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
737 struct ieee80211_sub_if_data *sdata,
738 enum queue_stop_reason reason)
739 {
740 ieee80211_wake_queues_by_reason(&local->hw,
741 ieee80211_get_vif_queues(local, sdata),
742 reason, true);
743 }
744
745 static void __iterate_interfaces(struct ieee80211_local *local,
746 u32 iter_flags,
747 void (*iterator)(void *data, u8 *mac,
748 struct ieee80211_vif *vif),
749 void *data)
750 {
751 struct ieee80211_sub_if_data *sdata;
752 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
753
754 list_for_each_entry_rcu(sdata, &local->interfaces, list,
755 lockdep_is_held(&local->iflist_mtx) ||
756 lockdep_is_held(&local->hw.wiphy->mtx)) {
757 switch (sdata->vif.type) {
758 case NL80211_IFTYPE_MONITOR:
759 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
760 continue;
761 break;
762 case NL80211_IFTYPE_AP_VLAN:
763 continue;
764 default:
765 break;
766 }
767 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
768 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
769 continue;
770 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
771 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
772 continue;
773 if (ieee80211_sdata_running(sdata) || !active_only)
774 iterator(data, sdata->vif.addr,
775 &sdata->vif);
776 }
777
778 sdata = rcu_dereference_check(local->monitor_sdata,
779 lockdep_is_held(&local->iflist_mtx) ||
780 lockdep_is_held(&local->hw.wiphy->mtx));
781 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) &&
782 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
783 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
784 iterator(data, sdata->vif.addr, &sdata->vif);
785 }
786
787 void ieee80211_iterate_interfaces(
788 struct ieee80211_hw *hw, u32 iter_flags,
789 void (*iterator)(void *data, u8 *mac,
790 struct ieee80211_vif *vif),
791 void *data)
792 {
793 struct ieee80211_local *local = hw_to_local(hw);
794
795 mutex_lock(&local->iflist_mtx);
796 __iterate_interfaces(local, iter_flags, iterator, data);
797 mutex_unlock(&local->iflist_mtx);
798 }
799 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
800
801 void ieee80211_iterate_active_interfaces_atomic(
802 struct ieee80211_hw *hw, u32 iter_flags,
803 void (*iterator)(void *data, u8 *mac,
804 struct ieee80211_vif *vif),
805 void *data)
806 {
807 struct ieee80211_local *local = hw_to_local(hw);
808
809 rcu_read_lock();
810 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
811 iterator, data);
812 rcu_read_unlock();
813 }
814 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
815
816 void ieee80211_iterate_active_interfaces_mtx(
817 struct ieee80211_hw *hw, u32 iter_flags,
818 void (*iterator)(void *data, u8 *mac,
819 struct ieee80211_vif *vif),
820 void *data)
821 {
822 struct ieee80211_local *local = hw_to_local(hw);
823
824 lockdep_assert_wiphy(hw->wiphy);
825
826 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
827 iterator, data);
828 }
829 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
830
831 static void __iterate_stations(struct ieee80211_local *local,
832 void (*iterator)(void *data,
833 struct ieee80211_sta *sta),
834 void *data)
835 {
836 struct sta_info *sta;
837
838 list_for_each_entry_rcu(sta, &local->sta_list, list) {
839 if (!sta->uploaded)
840 continue;
841
842 iterator(data, &sta->sta);
843 }
844 }
845
846 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
847 void (*iterator)(void *data,
848 struct ieee80211_sta *sta),
849 void *data)
850 {
851 struct ieee80211_local *local = hw_to_local(hw);
852
853 rcu_read_lock();
854 __iterate_stations(local, iterator, data);
855 rcu_read_unlock();
856 }
857 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
858
859 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
860 {
861 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
862
863 if (!ieee80211_sdata_running(sdata) ||
864 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
865 return NULL;
866 return &sdata->vif;
867 }
868 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
869
870 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
871 {
872 if (!vif)
873 return NULL;
874
875 return &vif_to_sdata(vif)->wdev;
876 }
877 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
878
879 /*
880 * Nothing should have been stuffed into the workqueue during
881 * the suspend->resume cycle. Since we can't check each caller
882 * of this function if we are already quiescing / suspended,
883 * check here and don't WARN since this can actually happen when
884 * the rx path (for example) is racing against __ieee80211_suspend
885 * and suspending / quiescing was set after the rx path checked
886 * them.
887 */
888 static bool ieee80211_can_queue_work(struct ieee80211_local *local)
889 {
890 if (local->quiescing || (local->suspended && !local->resuming)) {
891 pr_warn("queueing ieee80211 work while going to suspend\n");
892 return false;
893 }
894
895 return true;
896 }
897
898 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
899 {
900 struct ieee80211_local *local = hw_to_local(hw);
901
902 if (!ieee80211_can_queue_work(local))
903 return;
904
905 queue_work(local->workqueue, work);
906 }
907 EXPORT_SYMBOL(ieee80211_queue_work);
908
909 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
910 struct delayed_work *dwork,
911 unsigned long delay)
912 {
913 struct ieee80211_local *local = hw_to_local(hw);
914
915 if (!ieee80211_can_queue_work(local))
916 return;
917
918 queue_delayed_work(local->workqueue, dwork, delay);
919 }
920 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
921
922 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
923 struct ieee80211_tx_queue_params
924 *qparam, int ac)
925 {
926 struct ieee80211_chanctx_conf *chanctx_conf;
927 const struct ieee80211_reg_rule *rrule;
928 const struct ieee80211_wmm_ac *wmm_ac;
929 u16 center_freq = 0;
930
931 if (sdata->vif.type != NL80211_IFTYPE_AP &&
932 sdata->vif.type != NL80211_IFTYPE_STATION)
933 return;
934
935 rcu_read_lock();
936 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
937 if (chanctx_conf)
938 center_freq = chanctx_conf->def.chan->center_freq;
939
940 if (!center_freq) {
941 rcu_read_unlock();
942 return;
943 }
944
945 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
946
947 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
948 rcu_read_unlock();
949 return;
950 }
951
952 if (sdata->vif.type == NL80211_IFTYPE_AP)
953 wmm_ac = &rrule->wmm_rule.ap[ac];
954 else
955 wmm_ac = &rrule->wmm_rule.client[ac];
956 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
957 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
958 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
959 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
960 rcu_read_unlock();
961 }
962
963 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
964 bool bss_notify, bool enable_qos)
965 {
966 struct ieee80211_sub_if_data *sdata = link->sdata;
967 struct ieee80211_local *local = sdata->local;
968 struct ieee80211_tx_queue_params qparam;
969 struct ieee80211_chanctx_conf *chanctx_conf;
970 int ac;
971 bool use_11b;
972 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
973 int aCWmin, aCWmax;
974
975 if (!local->ops->conf_tx)
976 return;
977
978 if (local->hw.queues < IEEE80211_NUM_ACS)
979 return;
980
981 memset(&qparam, 0, sizeof(qparam));
982
983 rcu_read_lock();
984 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
985 use_11b = (chanctx_conf &&
986 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
987 !link->operating_11g_mode;
988 rcu_read_unlock();
989
990 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
991
992 /* Set defaults according to 802.11-2007 Table 7-37 */
993 aCWmax = 1023;
994 if (use_11b)
995 aCWmin = 31;
996 else
997 aCWmin = 15;
998
999 /* Confiure old 802.11b/g medium access rules. */
1000 qparam.cw_max = aCWmax;
1001 qparam.cw_min = aCWmin;
1002 qparam.txop = 0;
1003 qparam.aifs = 2;
1004
1005 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1006 /* Update if QoS is enabled. */
1007 if (enable_qos) {
1008 switch (ac) {
1009 case IEEE80211_AC_BK:
1010 qparam.cw_max = aCWmax;
1011 qparam.cw_min = aCWmin;
1012 qparam.txop = 0;
1013 if (is_ocb)
1014 qparam.aifs = 9;
1015 else
1016 qparam.aifs = 7;
1017 break;
1018 /* never happens but let's not leave undefined */
1019 default:
1020 case IEEE80211_AC_BE:
1021 qparam.cw_max = aCWmax;
1022 qparam.cw_min = aCWmin;
1023 qparam.txop = 0;
1024 if (is_ocb)
1025 qparam.aifs = 6;
1026 else
1027 qparam.aifs = 3;
1028 break;
1029 case IEEE80211_AC_VI:
1030 qparam.cw_max = aCWmin;
1031 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1032 if (is_ocb)
1033 qparam.txop = 0;
1034 else if (use_11b)
1035 qparam.txop = 6016/32;
1036 else
1037 qparam.txop = 3008/32;
1038
1039 if (is_ocb)
1040 qparam.aifs = 3;
1041 else
1042 qparam.aifs = 2;
1043 break;
1044 case IEEE80211_AC_VO:
1045 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1046 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1047 if (is_ocb)
1048 qparam.txop = 0;
1049 else if (use_11b)
1050 qparam.txop = 3264/32;
1051 else
1052 qparam.txop = 1504/32;
1053 qparam.aifs = 2;
1054 break;
1055 }
1056 }
1057 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1058
1059 qparam.uapsd = false;
1060
1061 link->tx_conf[ac] = qparam;
1062 drv_conf_tx(local, link, ac, &qparam);
1063 }
1064
1065 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1066 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1067 sdata->vif.type != NL80211_IFTYPE_NAN) {
1068 link->conf->qos = enable_qos;
1069 if (bss_notify)
1070 ieee80211_link_info_change_notify(sdata, link,
1071 BSS_CHANGED_QOS);
1072 }
1073 }
1074
1075 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1076 u16 transaction, u16 auth_alg, u16 status,
1077 const u8 *extra, size_t extra_len, const u8 *da,
1078 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1079 u32 tx_flags)
1080 {
1081 struct ieee80211_local *local = sdata->local;
1082 struct sk_buff *skb;
1083 struct ieee80211_mgmt *mgmt;
1084 bool multi_link = ieee80211_vif_is_mld(&sdata->vif);
1085 struct {
1086 u8 id;
1087 u8 len;
1088 u8 ext_id;
1089 struct ieee80211_multi_link_elem ml;
1090 struct ieee80211_mle_basic_common_info basic;
1091 } __packed mle = {
1092 .id = WLAN_EID_EXTENSION,
1093 .len = sizeof(mle) - 2,
1094 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK,
1095 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC),
1096 .basic.len = sizeof(mle.basic),
1097 };
1098 int err;
1099
1100 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN);
1101
1102 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1103 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1104 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN +
1105 multi_link * sizeof(mle));
1106 if (!skb)
1107 return;
1108
1109 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1110
1111 mgmt = skb_put_zero(skb, 24 + 6);
1112 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1113 IEEE80211_STYPE_AUTH);
1114 memcpy(mgmt->da, da, ETH_ALEN);
1115 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1116 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1117 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1118 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1119 mgmt->u.auth.status_code = cpu_to_le16(status);
1120 if (extra)
1121 skb_put_data(skb, extra, extra_len);
1122 if (multi_link)
1123 skb_put_data(skb, &mle, sizeof(mle));
1124
1125 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1126 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1127 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1128 if (WARN_ON(err)) {
1129 kfree_skb(skb);
1130 return;
1131 }
1132 }
1133
1134 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1135 tx_flags;
1136 ieee80211_tx_skb(sdata, skb);
1137 }
1138
1139 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1140 const u8 *da, const u8 *bssid,
1141 u16 stype, u16 reason,
1142 bool send_frame, u8 *frame_buf)
1143 {
1144 struct ieee80211_local *local = sdata->local;
1145 struct sk_buff *skb;
1146 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1147
1148 /* build frame */
1149 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1150 mgmt->duration = 0; /* initialize only */
1151 mgmt->seq_ctrl = 0; /* initialize only */
1152 memcpy(mgmt->da, da, ETH_ALEN);
1153 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1154 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1155 /* u.deauth.reason_code == u.disassoc.reason_code */
1156 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1157
1158 if (send_frame) {
1159 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1160 IEEE80211_DEAUTH_FRAME_LEN);
1161 if (!skb)
1162 return;
1163
1164 skb_reserve(skb, local->hw.extra_tx_headroom);
1165
1166 /* copy in frame */
1167 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1168
1169 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1170 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1171 IEEE80211_SKB_CB(skb)->flags |=
1172 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1173
1174 ieee80211_tx_skb(sdata, skb);
1175 }
1176 }
1177
1178 static int ieee80211_put_s1g_cap(struct sk_buff *skb,
1179 struct ieee80211_sta_s1g_cap *s1g_cap)
1180 {
1181 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_s1g_cap))
1182 return -ENOBUFS;
1183
1184 skb_put_u8(skb, WLAN_EID_S1G_CAPABILITIES);
1185 skb_put_u8(skb, sizeof(struct ieee80211_s1g_cap));
1186
1187 skb_put_data(skb, &s1g_cap->cap, sizeof(s1g_cap->cap));
1188 skb_put_data(skb, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs));
1189
1190 return 0;
1191 }
1192
1193 static int ieee80211_put_preq_ies_band(struct sk_buff *skb,
1194 struct ieee80211_sub_if_data *sdata,
1195 const u8 *ie, size_t ie_len,
1196 size_t *offset,
1197 enum nl80211_band band,
1198 u32 rate_mask,
1199 struct cfg80211_chan_def *chandef,
1200 u32 flags)
1201 {
1202 struct ieee80211_local *local = sdata->local;
1203 struct ieee80211_supported_band *sband;
1204 int i, err;
1205 size_t noffset;
1206 u32 rate_flags;
1207 bool have_80mhz = false;
1208
1209 *offset = 0;
1210
1211 sband = local->hw.wiphy->bands[band];
1212 if (WARN_ON_ONCE(!sband))
1213 return 0;
1214
1215 rate_flags = ieee80211_chandef_rate_flags(chandef);
1216
1217 /* For direct scan add S1G IE and consider its override bits */
1218 if (band == NL80211_BAND_S1GHZ)
1219 return ieee80211_put_s1g_cap(skb, &sband->s1g_cap);
1220
1221 err = ieee80211_put_srates_elem(skb, sband, 0, rate_flags,
1222 ~rate_mask, WLAN_EID_SUPP_RATES);
1223 if (err)
1224 return err;
1225
1226 /* insert "request information" if in custom IEs */
1227 if (ie && ie_len) {
1228 static const u8 before_extrates[] = {
1229 WLAN_EID_SSID,
1230 WLAN_EID_SUPP_RATES,
1231 WLAN_EID_REQUEST,
1232 };
1233 noffset = ieee80211_ie_split(ie, ie_len,
1234 before_extrates,
1235 ARRAY_SIZE(before_extrates),
1236 *offset);
1237 if (skb_tailroom(skb) < noffset - *offset)
1238 return -ENOBUFS;
1239 skb_put_data(skb, ie + *offset, noffset - *offset);
1240 *offset = noffset;
1241 }
1242
1243 err = ieee80211_put_srates_elem(skb, sband, 0, rate_flags,
1244 ~rate_mask, WLAN_EID_EXT_SUPP_RATES);
1245 if (err)
1246 return err;
1247
1248 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1249 if (skb_tailroom(skb) < 3)
1250 return -ENOBUFS;
1251 skb_put_u8(skb, WLAN_EID_DS_PARAMS);
1252 skb_put_u8(skb, 1);
1253 skb_put_u8(skb,
1254 ieee80211_frequency_to_channel(chandef->chan->center_freq));
1255 }
1256
1257 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1258 return 0;
1259
1260 /* insert custom IEs that go before HT */
1261 if (ie && ie_len) {
1262 static const u8 before_ht[] = {
1263 /*
1264 * no need to list the ones split off already
1265 * (or generated here)
1266 */
1267 WLAN_EID_DS_PARAMS,
1268 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1269 };
1270 noffset = ieee80211_ie_split(ie, ie_len,
1271 before_ht, ARRAY_SIZE(before_ht),
1272 *offset);
1273 if (skb_tailroom(skb) < noffset - *offset)
1274 return -ENOBUFS;
1275 skb_put_data(skb, ie + *offset, noffset - *offset);
1276 *offset = noffset;
1277 }
1278
1279 if (sband->ht_cap.ht_supported) {
1280 u8 *pos;
1281
1282 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
1283 return -ENOBUFS;
1284
1285 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap));
1286 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1287 sband->ht_cap.cap);
1288 }
1289
1290 /* insert custom IEs that go before VHT */
1291 if (ie && ie_len) {
1292 static const u8 before_vht[] = {
1293 /*
1294 * no need to list the ones split off already
1295 * (or generated here)
1296 */
1297 WLAN_EID_BSS_COEX_2040,
1298 WLAN_EID_EXT_CAPABILITY,
1299 WLAN_EID_SSID_LIST,
1300 WLAN_EID_CHANNEL_USAGE,
1301 WLAN_EID_INTERWORKING,
1302 WLAN_EID_MESH_ID,
1303 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1304 };
1305 noffset = ieee80211_ie_split(ie, ie_len,
1306 before_vht, ARRAY_SIZE(before_vht),
1307 *offset);
1308 if (skb_tailroom(skb) < noffset - *offset)
1309 return -ENOBUFS;
1310 skb_put_data(skb, ie + *offset, noffset - *offset);
1311 *offset = noffset;
1312 }
1313
1314 /* Check if any channel in this sband supports at least 80 MHz */
1315 for (i = 0; i < sband->n_channels; i++) {
1316 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1317 IEEE80211_CHAN_NO_80MHZ))
1318 continue;
1319
1320 have_80mhz = true;
1321 break;
1322 }
1323
1324 if (sband->vht_cap.vht_supported && have_80mhz) {
1325 u8 *pos;
1326
1327 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_cap))
1328 return -ENOBUFS;
1329
1330 pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap));
1331 ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1332 sband->vht_cap.cap);
1333 }
1334
1335 /* insert custom IEs that go before HE */
1336 if (ie && ie_len) {
1337 static const u8 before_he[] = {
1338 /*
1339 * no need to list the ones split off before VHT
1340 * or generated here
1341 */
1342 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1343 WLAN_EID_AP_CSN,
1344 /* TODO: add 11ah/11aj/11ak elements */
1345 };
1346 noffset = ieee80211_ie_split(ie, ie_len,
1347 before_he, ARRAY_SIZE(before_he),
1348 *offset);
1349 if (skb_tailroom(skb) < noffset - *offset)
1350 return -ENOBUFS;
1351 skb_put_data(skb, ie + *offset, noffset - *offset);
1352 *offset = noffset;
1353 }
1354
1355 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
1356 IEEE80211_CHAN_NO_HE)) {
1357 err = ieee80211_put_he_cap(skb, sdata, sband, NULL);
1358 if (err)
1359 return err;
1360 }
1361
1362 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
1363 IEEE80211_CHAN_NO_HE |
1364 IEEE80211_CHAN_NO_EHT)) {
1365 err = ieee80211_put_eht_cap(skb, sdata, sband, NULL);
1366 if (err)
1367 return err;
1368 }
1369
1370 err = ieee80211_put_he_6ghz_cap(skb, sdata, IEEE80211_SMPS_OFF);
1371 if (err)
1372 return err;
1373
1374 /*
1375 * If adding more here, adjust code in main.c
1376 * that calculates local->scan_ies_len.
1377 */
1378
1379 return 0;
1380 }
1381
1382 static int ieee80211_put_preq_ies(struct sk_buff *skb,
1383 struct ieee80211_sub_if_data *sdata,
1384 struct ieee80211_scan_ies *ie_desc,
1385 const u8 *ie, size_t ie_len,
1386 u8 bands_used, u32 *rate_masks,
1387 struct cfg80211_chan_def *chandef,
1388 u32 flags)
1389 {
1390 size_t custom_ie_offset = 0;
1391 int i, err;
1392
1393 memset(ie_desc, 0, sizeof(*ie_desc));
1394
1395 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1396 if (bands_used & BIT(i)) {
1397 ie_desc->ies[i] = skb_tail_pointer(skb);
1398 err = ieee80211_put_preq_ies_band(skb, sdata,
1399 ie, ie_len,
1400 &custom_ie_offset,
1401 i, rate_masks[i],
1402 chandef, flags);
1403 if (err)
1404 return err;
1405 ie_desc->len[i] = skb_tail_pointer(skb) -
1406 ie_desc->ies[i];
1407 }
1408 }
1409
1410 /* add any remaining custom IEs */
1411 if (ie && ie_len) {
1412 if (WARN_ONCE(skb_tailroom(skb) < ie_len - custom_ie_offset,
1413 "not enough space for preq custom IEs\n"))
1414 return -ENOBUFS;
1415 ie_desc->common_ies = skb_tail_pointer(skb);
1416 skb_put_data(skb, ie + custom_ie_offset,
1417 ie_len - custom_ie_offset);
1418 ie_desc->common_ie_len = skb_tail_pointer(skb) -
1419 ie_desc->common_ies;
1420 }
1421
1422 return 0;
1423 };
1424
1425 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
1426 size_t buffer_len,
1427 struct ieee80211_scan_ies *ie_desc,
1428 const u8 *ie, size_t ie_len,
1429 u8 bands_used, u32 *rate_masks,
1430 struct cfg80211_chan_def *chandef,
1431 u32 flags)
1432 {
1433 struct sk_buff *skb = alloc_skb(buffer_len, GFP_KERNEL);
1434 uintptr_t offs;
1435 int ret, i;
1436 u8 *start;
1437
1438 if (!skb)
1439 return -ENOMEM;
1440
1441 start = skb_tail_pointer(skb);
1442 memset(start, 0, skb_tailroom(skb));
1443 ret = ieee80211_put_preq_ies(skb, sdata, ie_desc, ie, ie_len,
1444 bands_used, rate_masks, chandef,
1445 flags);
1446 if (ret < 0) {
1447 goto out;
1448 }
1449
1450 if (skb->len > buffer_len) {
1451 ret = -ENOBUFS;
1452 goto out;
1453 }
1454
1455 memcpy(buffer, start, skb->len);
1456
1457 /* adjust ie_desc for copy */
1458 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1459 offs = ie_desc->ies[i] - start;
1460 ie_desc->ies[i] = buffer + offs;
1461 }
1462 offs = ie_desc->common_ies - start;
1463 ie_desc->common_ies = buffer + offs;
1464
1465 ret = skb->len;
1466 out:
1467 consume_skb(skb);
1468 return ret;
1469 }
1470
1471 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1472 const u8 *src, const u8 *dst,
1473 u32 ratemask,
1474 struct ieee80211_channel *chan,
1475 const u8 *ssid, size_t ssid_len,
1476 const u8 *ie, size_t ie_len,
1477 u32 flags)
1478 {
1479 struct ieee80211_local *local = sdata->local;
1480 struct cfg80211_chan_def chandef;
1481 struct sk_buff *skb;
1482 struct ieee80211_mgmt *mgmt;
1483 u32 rate_masks[NUM_NL80211_BANDS] = {};
1484 struct ieee80211_scan_ies dummy_ie_desc;
1485
1486 /*
1487 * Do not send DS Channel parameter for directed probe requests
1488 * in order to maximize the chance that we get a response. Some
1489 * badly-behaved APs don't respond when this parameter is included.
1490 */
1491 chandef.width = sdata->vif.bss_conf.chanreq.oper.width;
1492 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
1493 chandef.chan = NULL;
1494 else
1495 chandef.chan = chan;
1496
1497 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1498 local->scan_ies_len + ie_len);
1499 if (!skb)
1500 return NULL;
1501
1502 rate_masks[chan->band] = ratemask;
1503 ieee80211_put_preq_ies(skb, sdata, &dummy_ie_desc,
1504 ie, ie_len, BIT(chan->band),
1505 rate_masks, &chandef, flags);
1506
1507 if (dst) {
1508 mgmt = (struct ieee80211_mgmt *) skb->data;
1509 memcpy(mgmt->da, dst, ETH_ALEN);
1510 memcpy(mgmt->bssid, dst, ETH_ALEN);
1511 }
1512
1513 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1514
1515 return skb;
1516 }
1517
1518 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1519 struct ieee802_11_elems *elems,
1520 enum nl80211_band band, u32 *basic_rates)
1521 {
1522 struct ieee80211_supported_band *sband;
1523 size_t num_rates;
1524 u32 supp_rates, rate_flags;
1525 int i, j;
1526
1527 sband = sdata->local->hw.wiphy->bands[band];
1528 if (WARN_ON(!sband))
1529 return 1;
1530
1531 rate_flags =
1532 ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chanreq.oper);
1533
1534 num_rates = sband->n_bitrates;
1535 supp_rates = 0;
1536 for (i = 0; i < elems->supp_rates_len +
1537 elems->ext_supp_rates_len; i++) {
1538 u8 rate = 0;
1539 int own_rate;
1540 bool is_basic;
1541 if (i < elems->supp_rates_len)
1542 rate = elems->supp_rates[i];
1543 else if (elems->ext_supp_rates)
1544 rate = elems->ext_supp_rates
1545 [i - elems->supp_rates_len];
1546 own_rate = 5 * (rate & 0x7f);
1547 is_basic = !!(rate & 0x80);
1548
1549 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
1550 continue;
1551
1552 for (j = 0; j < num_rates; j++) {
1553 int brate;
1554 if ((rate_flags & sband->bitrates[j].flags)
1555 != rate_flags)
1556 continue;
1557
1558 brate = sband->bitrates[j].bitrate;
1559
1560 if (brate == own_rate) {
1561 supp_rates |= BIT(j);
1562 if (basic_rates && is_basic)
1563 *basic_rates |= BIT(j);
1564 }
1565 }
1566 }
1567 return supp_rates;
1568 }
1569
1570 void ieee80211_stop_device(struct ieee80211_local *local, bool suspend)
1571 {
1572 local_bh_disable();
1573 ieee80211_handle_queued_frames(local);
1574 local_bh_enable();
1575
1576 ieee80211_led_radio(local, false);
1577 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
1578
1579 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter);
1580
1581 flush_workqueue(local->workqueue);
1582 wiphy_work_flush(local->hw.wiphy, NULL);
1583 drv_stop(local, suspend);
1584 }
1585
1586 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
1587 bool aborted)
1588 {
1589 /* It's possible that we don't handle the scan completion in
1590 * time during suspend, so if it's still marked as completed
1591 * here, queue the work and flush it to clean things up.
1592 * Instead of calling the worker function directly here, we
1593 * really queue it to avoid potential races with other flows
1594 * scheduling the same work.
1595 */
1596 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
1597 /* If coming from reconfiguration failure, abort the scan so
1598 * we don't attempt to continue a partial HW scan - which is
1599 * possible otherwise if (e.g.) the 2.4 GHz portion was the
1600 * completed scan, and a 5 GHz portion is still pending.
1601 */
1602 if (aborted)
1603 set_bit(SCAN_ABORTED, &local->scanning);
1604 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0);
1605 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work);
1606 }
1607 }
1608
1609 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
1610 {
1611 struct ieee80211_sub_if_data *sdata;
1612 struct ieee80211_chanctx *ctx;
1613
1614 lockdep_assert_wiphy(local->hw.wiphy);
1615
1616 /*
1617 * We get here if during resume the device can't be restarted properly.
1618 * We might also get here if this happens during HW reset, which is a
1619 * slightly different situation and we need to drop all connections in
1620 * the latter case.
1621 *
1622 * Ask cfg80211 to turn off all interfaces, this will result in more
1623 * warnings but at least we'll then get into a clean stopped state.
1624 */
1625
1626 local->resuming = false;
1627 local->suspended = false;
1628 local->in_reconfig = false;
1629 local->reconfig_failure = true;
1630
1631 ieee80211_flush_completed_scan(local, true);
1632
1633 /* scheduled scan clearly can't be running any more, but tell
1634 * cfg80211 and clear local state
1635 */
1636 ieee80211_sched_scan_end(local);
1637
1638 list_for_each_entry(sdata, &local->interfaces, list)
1639 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
1640
1641 /* Mark channel contexts as not being in the driver any more to avoid
1642 * removing them from the driver during the shutdown process...
1643 */
1644 list_for_each_entry(ctx, &local->chanctx_list, list)
1645 ctx->driver_present = false;
1646 }
1647
1648 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
1649 struct ieee80211_sub_if_data *sdata,
1650 struct ieee80211_link_data *link)
1651 {
1652 struct ieee80211_chanctx_conf *conf;
1653 struct ieee80211_chanctx *ctx;
1654
1655 lockdep_assert_wiphy(local->hw.wiphy);
1656
1657 conf = rcu_dereference_protected(link->conf->chanctx_conf,
1658 lockdep_is_held(&local->hw.wiphy->mtx));
1659 if (conf) {
1660 ctx = container_of(conf, struct ieee80211_chanctx, conf);
1661 drv_assign_vif_chanctx(local, sdata, link->conf, ctx);
1662 }
1663 }
1664
1665 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
1666 {
1667 struct ieee80211_local *local = sdata->local;
1668 struct sta_info *sta;
1669
1670 lockdep_assert_wiphy(local->hw.wiphy);
1671
1672 /* add STAs back */
1673 list_for_each_entry(sta, &local->sta_list, list) {
1674 enum ieee80211_sta_state state;
1675
1676 if (!sta->uploaded || sta->sdata != sdata)
1677 continue;
1678
1679 for (state = IEEE80211_STA_NOTEXIST;
1680 state < sta->sta_state; state++)
1681 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1682 state + 1));
1683 }
1684 }
1685
1686 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
1687 {
1688 struct cfg80211_nan_func *func, **funcs;
1689 int res, id, i = 0;
1690
1691 res = drv_start_nan(sdata->local, sdata,
1692 &sdata->u.nan.conf);
1693 if (WARN_ON(res))
1694 return res;
1695
1696 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
1697 sizeof(*funcs),
1698 GFP_KERNEL);
1699 if (!funcs)
1700 return -ENOMEM;
1701
1702 /* Add all the functions:
1703 * This is a little bit ugly. We need to call a potentially sleeping
1704 * callback for each NAN function, so we can't hold the spinlock.
1705 */
1706 spin_lock_bh(&sdata->u.nan.func_lock);
1707
1708 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
1709 funcs[i++] = func;
1710
1711 spin_unlock_bh(&sdata->u.nan.func_lock);
1712
1713 for (i = 0; funcs[i]; i++) {
1714 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
1715 if (WARN_ON(res))
1716 ieee80211_nan_func_terminated(&sdata->vif,
1717 funcs[i]->instance_id,
1718 NL80211_NAN_FUNC_TERM_REASON_ERROR,
1719 GFP_KERNEL);
1720 }
1721
1722 kfree(funcs);
1723
1724 return 0;
1725 }
1726
1727 static void ieee80211_reconfig_ap_links(struct ieee80211_local *local,
1728 struct ieee80211_sub_if_data *sdata,
1729 u64 changed)
1730 {
1731 int link_id;
1732
1733 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
1734 struct ieee80211_link_data *link;
1735
1736 if (!(sdata->vif.active_links & BIT(link_id)))
1737 continue;
1738
1739 link = sdata_dereference(sdata->link[link_id], sdata);
1740 if (!link)
1741 continue;
1742
1743 if (rcu_access_pointer(link->u.ap.beacon))
1744 drv_start_ap(local, sdata, link->conf);
1745
1746 if (!link->conf->enable_beacon)
1747 continue;
1748
1749 changed |= BSS_CHANGED_BEACON |
1750 BSS_CHANGED_BEACON_ENABLED;
1751
1752 ieee80211_link_info_change_notify(sdata, link, changed);
1753 }
1754 }
1755
1756 int ieee80211_reconfig(struct ieee80211_local *local)
1757 {
1758 struct ieee80211_hw *hw = &local->hw;
1759 struct ieee80211_sub_if_data *sdata;
1760 struct ieee80211_chanctx *ctx;
1761 struct sta_info *sta;
1762 int res, i;
1763 bool reconfig_due_to_wowlan = false;
1764 struct ieee80211_sub_if_data *sched_scan_sdata;
1765 struct cfg80211_sched_scan_request *sched_scan_req;
1766 bool sched_scan_stopped = false;
1767 bool suspended = local->suspended;
1768 bool in_reconfig = false;
1769
1770 lockdep_assert_wiphy(local->hw.wiphy);
1771
1772 /* nothing to do if HW shouldn't run */
1773 if (!local->open_count)
1774 goto wake_up;
1775
1776 #ifdef CONFIG_PM
1777 if (suspended)
1778 local->resuming = true;
1779
1780 if (local->wowlan) {
1781 /*
1782 * In the wowlan case, both mac80211 and the device
1783 * are functional when the resume op is called, so
1784 * clear local->suspended so the device could operate
1785 * normally (e.g. pass rx frames).
1786 */
1787 local->suspended = false;
1788 res = drv_resume(local);
1789 local->wowlan = false;
1790 if (res < 0) {
1791 local->resuming = false;
1792 return res;
1793 }
1794 if (res == 0)
1795 goto wake_up;
1796 WARN_ON(res > 1);
1797 /*
1798 * res is 1, which means the driver requested
1799 * to go through a regular reset on wakeup.
1800 * restore local->suspended in this case.
1801 */
1802 reconfig_due_to_wowlan = true;
1803 local->suspended = true;
1804 }
1805 #endif
1806
1807 /*
1808 * In case of hw_restart during suspend (without wowlan),
1809 * cancel restart work, as we are reconfiguring the device
1810 * anyway.
1811 * Note that restart_work is scheduled on a frozen workqueue,
1812 * so we can't deadlock in this case.
1813 */
1814 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
1815 cancel_work_sync(&local->restart_work);
1816
1817 local->started = false;
1818
1819 /*
1820 * Upon resume hardware can sometimes be goofy due to
1821 * various platform / driver / bus issues, so restarting
1822 * the device may at times not work immediately. Propagate
1823 * the error.
1824 */
1825 res = drv_start(local);
1826 if (res) {
1827 if (suspended)
1828 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
1829 else
1830 WARN(1, "Hardware became unavailable during restart.\n");
1831 ieee80211_handle_reconfig_failure(local);
1832 return res;
1833 }
1834
1835 /* setup fragmentation threshold */
1836 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
1837
1838 /* setup RTS threshold */
1839 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
1840
1841 /* reset coverage class */
1842 drv_set_coverage_class(local, hw->wiphy->coverage_class);
1843
1844 ieee80211_led_radio(local, true);
1845 ieee80211_mod_tpt_led_trig(local,
1846 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
1847
1848 /* add interfaces */
1849 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
1850 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) {
1851 /* in HW restart it exists already */
1852 WARN_ON(local->resuming);
1853 res = drv_add_interface(local, sdata);
1854 if (WARN_ON(res)) {
1855 RCU_INIT_POINTER(local->monitor_sdata, NULL);
1856 synchronize_net();
1857 kfree(sdata);
1858 }
1859 }
1860
1861 list_for_each_entry(sdata, &local->interfaces, list) {
1862 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1863 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1864 ieee80211_sdata_running(sdata)) {
1865 res = drv_add_interface(local, sdata);
1866 if (WARN_ON(res))
1867 break;
1868 }
1869 }
1870
1871 /* If adding any of the interfaces failed above, roll back and
1872 * report failure.
1873 */
1874 if (res) {
1875 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
1876 list)
1877 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1878 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1879 ieee80211_sdata_running(sdata))
1880 drv_remove_interface(local, sdata);
1881 ieee80211_handle_reconfig_failure(local);
1882 return res;
1883 }
1884
1885 /* add channel contexts */
1886 list_for_each_entry(ctx, &local->chanctx_list, list)
1887 if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER)
1888 WARN_ON(drv_add_chanctx(local, ctx));
1889
1890 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
1891 if (sdata && ieee80211_sdata_running(sdata))
1892 ieee80211_assign_chanctx(local, sdata, &sdata->deflink);
1893
1894 /* reconfigure hardware */
1895 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_LISTEN_INTERVAL |
1896 IEEE80211_CONF_CHANGE_MONITOR |
1897 IEEE80211_CONF_CHANGE_PS |
1898 IEEE80211_CONF_CHANGE_RETRY_LIMITS |
1899 IEEE80211_CONF_CHANGE_IDLE);
1900
1901 ieee80211_configure_filter(local);
1902
1903 /* Finally also reconfigure all the BSS information */
1904 list_for_each_entry(sdata, &local->interfaces, list) {
1905 /* common change flags for all interface types - link only */
1906 u64 changed = BSS_CHANGED_ERP_CTS_PROT |
1907 BSS_CHANGED_ERP_PREAMBLE |
1908 BSS_CHANGED_ERP_SLOT |
1909 BSS_CHANGED_HT |
1910 BSS_CHANGED_BASIC_RATES |
1911 BSS_CHANGED_BEACON_INT |
1912 BSS_CHANGED_BSSID |
1913 BSS_CHANGED_CQM |
1914 BSS_CHANGED_QOS |
1915 BSS_CHANGED_TXPOWER |
1916 BSS_CHANGED_MCAST_RATE;
1917 struct ieee80211_link_data *link = NULL;
1918 unsigned int link_id;
1919 u32 active_links = 0;
1920
1921 if (!ieee80211_sdata_running(sdata))
1922 continue;
1923
1924 if (ieee80211_vif_is_mld(&sdata->vif)) {
1925 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = {
1926 [0] = &sdata->vif.bss_conf,
1927 };
1928
1929 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
1930 /* start with a single active link */
1931 active_links = sdata->vif.active_links;
1932 link_id = ffs(active_links) - 1;
1933 sdata->vif.active_links = BIT(link_id);
1934 }
1935
1936 drv_change_vif_links(local, sdata, 0,
1937 sdata->vif.active_links,
1938 old);
1939 }
1940
1941 sdata->restart_active_links = active_links;
1942
1943 for (link_id = 0;
1944 link_id < ARRAY_SIZE(sdata->vif.link_conf);
1945 link_id++) {
1946 if (!ieee80211_vif_link_active(&sdata->vif, link_id))
1947 continue;
1948
1949 link = sdata_dereference(sdata->link[link_id], sdata);
1950 if (!link)
1951 continue;
1952
1953 ieee80211_assign_chanctx(local, sdata, link);
1954 }
1955
1956 switch (sdata->vif.type) {
1957 case NL80211_IFTYPE_AP_VLAN:
1958 case NL80211_IFTYPE_MONITOR:
1959 break;
1960 case NL80211_IFTYPE_ADHOC:
1961 if (sdata->vif.cfg.ibss_joined)
1962 WARN_ON(drv_join_ibss(local, sdata));
1963 fallthrough;
1964 default:
1965 ieee80211_reconfig_stations(sdata);
1966 fallthrough;
1967 case NL80211_IFTYPE_AP: /* AP stations are handled later */
1968 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1969 drv_conf_tx(local, &sdata->deflink, i,
1970 &sdata->deflink.tx_conf[i]);
1971 break;
1972 }
1973
1974 if (sdata->vif.bss_conf.mu_mimo_owner)
1975 changed |= BSS_CHANGED_MU_GROUPS;
1976
1977 if (!ieee80211_vif_is_mld(&sdata->vif))
1978 changed |= BSS_CHANGED_IDLE;
1979
1980 switch (sdata->vif.type) {
1981 case NL80211_IFTYPE_STATION:
1982 if (!ieee80211_vif_is_mld(&sdata->vif)) {
1983 changed |= BSS_CHANGED_ASSOC |
1984 BSS_CHANGED_ARP_FILTER |
1985 BSS_CHANGED_PS;
1986
1987 /* Re-send beacon info report to the driver */
1988 if (sdata->deflink.u.mgd.have_beacon)
1989 changed |= BSS_CHANGED_BEACON_INFO;
1990
1991 if (sdata->vif.bss_conf.max_idle_period ||
1992 sdata->vif.bss_conf.protected_keep_alive)
1993 changed |= BSS_CHANGED_KEEP_ALIVE;
1994
1995 ieee80211_bss_info_change_notify(sdata,
1996 changed);
1997 } else if (!WARN_ON(!link)) {
1998 ieee80211_link_info_change_notify(sdata, link,
1999 changed);
2000 changed = BSS_CHANGED_ASSOC |
2001 BSS_CHANGED_IDLE |
2002 BSS_CHANGED_PS |
2003 BSS_CHANGED_ARP_FILTER;
2004 ieee80211_vif_cfg_change_notify(sdata, changed);
2005 }
2006 break;
2007 case NL80211_IFTYPE_OCB:
2008 changed |= BSS_CHANGED_OCB;
2009 ieee80211_bss_info_change_notify(sdata, changed);
2010 break;
2011 case NL80211_IFTYPE_ADHOC:
2012 changed |= BSS_CHANGED_IBSS;
2013 fallthrough;
2014 case NL80211_IFTYPE_AP:
2015 changed |= BSS_CHANGED_P2P_PS;
2016
2017 if (ieee80211_vif_is_mld(&sdata->vif))
2018 ieee80211_vif_cfg_change_notify(sdata,
2019 BSS_CHANGED_SSID);
2020 else
2021 changed |= BSS_CHANGED_SSID;
2022
2023 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2024 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2025 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2026 changed |= BSS_CHANGED_FTM_RESPONDER;
2027
2028 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2029 changed |= BSS_CHANGED_AP_PROBE_RESP;
2030
2031 if (ieee80211_vif_is_mld(&sdata->vif)) {
2032 ieee80211_reconfig_ap_links(local,
2033 sdata,
2034 changed);
2035 break;
2036 }
2037
2038 if (rcu_access_pointer(sdata->deflink.u.ap.beacon))
2039 drv_start_ap(local, sdata,
2040 sdata->deflink.conf);
2041 }
2042 fallthrough;
2043 case NL80211_IFTYPE_MESH_POINT:
2044 if (sdata->vif.bss_conf.enable_beacon) {
2045 changed |= BSS_CHANGED_BEACON |
2046 BSS_CHANGED_BEACON_ENABLED;
2047 ieee80211_bss_info_change_notify(sdata, changed);
2048 }
2049 break;
2050 case NL80211_IFTYPE_NAN:
2051 res = ieee80211_reconfig_nan(sdata);
2052 if (res < 0) {
2053 ieee80211_handle_reconfig_failure(local);
2054 return res;
2055 }
2056 break;
2057 case NL80211_IFTYPE_AP_VLAN:
2058 case NL80211_IFTYPE_MONITOR:
2059 case NL80211_IFTYPE_P2P_DEVICE:
2060 /* nothing to do */
2061 break;
2062 case NL80211_IFTYPE_UNSPECIFIED:
2063 case NUM_NL80211_IFTYPES:
2064 case NL80211_IFTYPE_P2P_CLIENT:
2065 case NL80211_IFTYPE_P2P_GO:
2066 case NL80211_IFTYPE_WDS:
2067 WARN_ON(1);
2068 break;
2069 }
2070 }
2071
2072 ieee80211_recalc_ps(local);
2073
2074 /*
2075 * The sta might be in psm against the ap (e.g. because
2076 * this was the state before a hw restart), so we
2077 * explicitly send a null packet in order to make sure
2078 * it'll sync against the ap (and get out of psm).
2079 */
2080 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2081 list_for_each_entry(sdata, &local->interfaces, list) {
2082 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2083 continue;
2084 if (!sdata->u.mgd.associated)
2085 continue;
2086
2087 ieee80211_send_nullfunc(local, sdata, false);
2088 }
2089 }
2090
2091 /* APs are now beaconing, add back stations */
2092 list_for_each_entry(sdata, &local->interfaces, list) {
2093 if (!ieee80211_sdata_running(sdata))
2094 continue;
2095
2096 switch (sdata->vif.type) {
2097 case NL80211_IFTYPE_AP_VLAN:
2098 case NL80211_IFTYPE_AP:
2099 ieee80211_reconfig_stations(sdata);
2100 break;
2101 default:
2102 break;
2103 }
2104 }
2105
2106 /* add back keys */
2107 list_for_each_entry(sdata, &local->interfaces, list)
2108 ieee80211_reenable_keys(sdata);
2109
2110 /* re-enable multi-link for client interfaces */
2111 list_for_each_entry(sdata, &local->interfaces, list) {
2112 if (sdata->restart_active_links)
2113 ieee80211_set_active_links(&sdata->vif,
2114 sdata->restart_active_links);
2115 /*
2116 * If a link switch was scheduled before the restart, and ran
2117 * before reconfig, it will do nothing, so re-schedule.
2118 */
2119 if (sdata->desired_active_links)
2120 wiphy_work_queue(sdata->local->hw.wiphy,
2121 &sdata->activate_links_work);
2122 }
2123
2124 /* Reconfigure sched scan if it was interrupted by FW restart */
2125 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2126 lockdep_is_held(&local->hw.wiphy->mtx));
2127 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2128 lockdep_is_held(&local->hw.wiphy->mtx));
2129 if (sched_scan_sdata && sched_scan_req)
2130 /*
2131 * Sched scan stopped, but we don't want to report it. Instead,
2132 * we're trying to reschedule. However, if more than one scan
2133 * plan was set, we cannot reschedule since we don't know which
2134 * scan plan was currently running (and some scan plans may have
2135 * already finished).
2136 */
2137 if (sched_scan_req->n_scan_plans > 1 ||
2138 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2139 sched_scan_req)) {
2140 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2141 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2142 sched_scan_stopped = true;
2143 }
2144
2145 if (sched_scan_stopped)
2146 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2147
2148 wake_up:
2149
2150 if (local->monitors == local->open_count && local->monitors > 0)
2151 ieee80211_add_virtual_monitor(local);
2152
2153 /*
2154 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2155 * sessions can be established after a resume.
2156 *
2157 * Also tear down aggregation sessions since reconfiguring
2158 * them in a hardware restart scenario is not easily done
2159 * right now, and the hardware will have lost information
2160 * about the sessions, but we and the AP still think they
2161 * are active. This is really a workaround though.
2162 */
2163 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2164 list_for_each_entry(sta, &local->sta_list, list) {
2165 if (!local->resuming)
2166 ieee80211_sta_tear_down_BA_sessions(
2167 sta, AGG_STOP_LOCAL_REQUEST);
2168 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2169 }
2170 }
2171
2172 /*
2173 * If this is for hw restart things are still running.
2174 * We may want to change that later, however.
2175 */
2176 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2177 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2178
2179 if (local->in_reconfig) {
2180 in_reconfig = local->in_reconfig;
2181 local->in_reconfig = false;
2182 barrier();
2183
2184 ieee80211_reconfig_roc(local);
2185
2186 /* Requeue all works */
2187 list_for_each_entry(sdata, &local->interfaces, list)
2188 wiphy_work_queue(local->hw.wiphy, &sdata->work);
2189 }
2190
2191 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2192 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2193 false);
2194
2195 if (in_reconfig) {
2196 list_for_each_entry(sdata, &local->interfaces, list) {
2197 if (!ieee80211_sdata_running(sdata))
2198 continue;
2199 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2200 ieee80211_sta_restart(sdata);
2201 }
2202 }
2203
2204 if (!suspended)
2205 return 0;
2206
2207 #ifdef CONFIG_PM
2208 /* first set suspended false, then resuming */
2209 local->suspended = false;
2210 mb();
2211 local->resuming = false;
2212
2213 ieee80211_flush_completed_scan(local, false);
2214
2215 if (local->open_count && !reconfig_due_to_wowlan)
2216 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2217
2218 list_for_each_entry(sdata, &local->interfaces, list) {
2219 if (!ieee80211_sdata_running(sdata))
2220 continue;
2221 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2222 ieee80211_sta_restart(sdata);
2223 }
2224
2225 mod_timer(&local->sta_cleanup, jiffies + 1);
2226 #else
2227 WARN_ON(1);
2228 #endif
2229
2230 return 0;
2231 }
2232
2233 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
2234 {
2235 struct ieee80211_sub_if_data *sdata;
2236 struct ieee80211_local *local;
2237 struct ieee80211_key *key;
2238
2239 if (WARN_ON(!vif))
2240 return;
2241
2242 sdata = vif_to_sdata(vif);
2243 local = sdata->local;
2244
2245 lockdep_assert_wiphy(local->hw.wiphy);
2246
2247 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
2248 !local->resuming))
2249 return;
2250
2251 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
2252 !local->in_reconfig))
2253 return;
2254
2255 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2256 return;
2257
2258 sdata->flags |= flag;
2259
2260 list_for_each_entry(key, &sdata->key_list, list)
2261 key->flags |= KEY_FLAG_TAINTED;
2262 }
2263
2264 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
2265 {
2266 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
2267 }
2268 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
2269
2270 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2271 {
2272 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
2273 }
2274 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2275
2276 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2277 struct ieee80211_link_data *link)
2278 {
2279 struct ieee80211_local *local = sdata->local;
2280 struct ieee80211_chanctx_conf *chanctx_conf;
2281 struct ieee80211_chanctx *chanctx;
2282
2283 lockdep_assert_wiphy(local->hw.wiphy);
2284
2285 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf,
2286 lockdep_is_held(&local->hw.wiphy->mtx));
2287
2288 /*
2289 * This function can be called from a work, thus it may be possible
2290 * that the chanctx_conf is removed (due to a disconnection, for
2291 * example).
2292 * So nothing should be done in such case.
2293 */
2294 if (!chanctx_conf)
2295 return;
2296
2297 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2298 ieee80211_recalc_smps_chanctx(local, chanctx);
2299 }
2300
2301 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2302 int link_id)
2303 {
2304 struct ieee80211_local *local = sdata->local;
2305 struct ieee80211_chanctx_conf *chanctx_conf;
2306 struct ieee80211_chanctx *chanctx;
2307 int i;
2308
2309 lockdep_assert_wiphy(local->hw.wiphy);
2310
2311 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) {
2312 struct ieee80211_bss_conf *bss_conf;
2313
2314 if (link_id >= 0 && link_id != i)
2315 continue;
2316
2317 rcu_read_lock();
2318 bss_conf = rcu_dereference(sdata->vif.link_conf[i]);
2319 if (!bss_conf) {
2320 rcu_read_unlock();
2321 continue;
2322 }
2323
2324 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf,
2325 lockdep_is_held(&local->hw.wiphy->mtx));
2326 /*
2327 * Since we hold the wiphy mutex (checked above)
2328 * we can take the chanctx_conf pointer out of the
2329 * RCU critical section, it cannot go away without
2330 * the mutex. Just the way we reached it could - in
2331 * theory - go away, but we don't really care and
2332 * it really shouldn't happen anyway.
2333 */
2334 rcu_read_unlock();
2335
2336 if (!chanctx_conf)
2337 return;
2338
2339 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx,
2340 conf);
2341 ieee80211_recalc_chanctx_min_def(local, chanctx, NULL, false);
2342 }
2343 }
2344
2345 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2346 {
2347 size_t pos = offset;
2348
2349 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2350 pos += 2 + ies[pos + 1];
2351
2352 return pos;
2353 }
2354
2355 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2356 u16 cap)
2357 {
2358 __le16 tmp;
2359
2360 *pos++ = WLAN_EID_HT_CAPABILITY;
2361 *pos++ = sizeof(struct ieee80211_ht_cap);
2362 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2363
2364 /* capability flags */
2365 tmp = cpu_to_le16(cap);
2366 memcpy(pos, &tmp, sizeof(u16));
2367 pos += sizeof(u16);
2368
2369 /* AMPDU parameters */
2370 *pos++ = ht_cap->ampdu_factor |
2371 (ht_cap->ampdu_density <<
2372 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2373
2374 /* MCS set */
2375 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2376 pos += sizeof(ht_cap->mcs);
2377
2378 /* extended capabilities */
2379 pos += sizeof(__le16);
2380
2381 /* BF capabilities */
2382 pos += sizeof(__le32);
2383
2384 /* antenna selection */
2385 pos += sizeof(u8);
2386
2387 return pos;
2388 }
2389
2390 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2391 u32 cap)
2392 {
2393 __le32 tmp;
2394
2395 *pos++ = WLAN_EID_VHT_CAPABILITY;
2396 *pos++ = sizeof(struct ieee80211_vht_cap);
2397 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2398
2399 /* capability flags */
2400 tmp = cpu_to_le32(cap);
2401 memcpy(pos, &tmp, sizeof(u32));
2402 pos += sizeof(u32);
2403
2404 /* VHT MCS set */
2405 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2406 pos += sizeof(vht_cap->vht_mcs);
2407
2408 return pos;
2409 }
2410
2411 /* this may return more than ieee80211_put_he_6ghz_cap() will need */
2412 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata)
2413 {
2414 const struct ieee80211_sta_he_cap *he_cap;
2415 struct ieee80211_supported_band *sband;
2416 u8 n;
2417
2418 sband = ieee80211_get_sband(sdata);
2419 if (!sband)
2420 return 0;
2421
2422 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
2423 if (!he_cap)
2424 return 0;
2425
2426 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2427 return 2 + 1 +
2428 sizeof(he_cap->he_cap_elem) + n +
2429 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2430 he_cap->he_cap_elem.phy_cap_info);
2431 }
2432
2433 static void
2434 ieee80211_get_adjusted_he_cap(const struct ieee80211_conn_settings *conn,
2435 const struct ieee80211_sta_he_cap *he_cap,
2436 struct ieee80211_he_cap_elem *elem)
2437 {
2438 u8 ru_limit, max_ru;
2439
2440 *elem = he_cap->he_cap_elem;
2441
2442 switch (conn->bw_limit) {
2443 case IEEE80211_CONN_BW_LIMIT_20:
2444 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242;
2445 break;
2446 case IEEE80211_CONN_BW_LIMIT_40:
2447 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484;
2448 break;
2449 case IEEE80211_CONN_BW_LIMIT_80:
2450 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996;
2451 break;
2452 default:
2453 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996;
2454 break;
2455 }
2456
2457 max_ru = elem->phy_cap_info[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK;
2458 max_ru = min(max_ru, ru_limit);
2459 elem->phy_cap_info[8] &= ~IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK;
2460 elem->phy_cap_info[8] |= max_ru;
2461
2462 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) {
2463 elem->phy_cap_info[0] &=
2464 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2465 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
2466 elem->phy_cap_info[9] &=
2467 ~IEEE80211_HE_PHY_CAP9_LONGER_THAN_16_SIGB_OFDM_SYM;
2468 }
2469
2470 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) {
2471 elem->phy_cap_info[0] &=
2472 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2473 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G);
2474 elem->phy_cap_info[5] &=
2475 ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK;
2476 elem->phy_cap_info[7] &=
2477 ~(IEEE80211_HE_PHY_CAP7_STBC_TX_ABOVE_80MHZ |
2478 IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ);
2479 }
2480 }
2481
2482 int ieee80211_put_he_cap(struct sk_buff *skb,
2483 struct ieee80211_sub_if_data *sdata,
2484 const struct ieee80211_supported_band *sband,
2485 const struct ieee80211_conn_settings *conn)
2486 {
2487 const struct ieee80211_sta_he_cap *he_cap;
2488 struct ieee80211_he_cap_elem elem;
2489 u8 *len;
2490 u8 n;
2491 u8 ie_len;
2492
2493 if (!conn)
2494 conn = &ieee80211_conn_settings_unlimited;
2495
2496 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
2497 if (!he_cap)
2498 return 0;
2499
2500 /* modify on stack first to calculate 'n' and 'ie_len' correctly */
2501 ieee80211_get_adjusted_he_cap(conn, he_cap, &elem);
2502
2503 n = ieee80211_he_mcs_nss_size(&elem);
2504 ie_len = 2 + 1 +
2505 sizeof(he_cap->he_cap_elem) + n +
2506 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2507 he_cap->he_cap_elem.phy_cap_info);
2508
2509 if (skb_tailroom(skb) < ie_len)
2510 return -ENOBUFS;
2511
2512 skb_put_u8(skb, WLAN_EID_EXTENSION);
2513 len = skb_put(skb, 1); /* We'll set the size later below */
2514 skb_put_u8(skb, WLAN_EID_EXT_HE_CAPABILITY);
2515
2516 /* Fixed data */
2517 skb_put_data(skb, &elem, sizeof(elem));
2518
2519 skb_put_data(skb, &he_cap->he_mcs_nss_supp, n);
2520
2521 /* Check if PPE Threshold should be present */
2522 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2523 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2524 goto end;
2525
2526 /*
2527 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2528 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2529 */
2530 n = hweight8(he_cap->ppe_thres[0] &
2531 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2532 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2533 IEEE80211_PPE_THRES_NSS_POS));
2534
2535 /*
2536 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2537 * total size.
2538 */
2539 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2540 n = DIV_ROUND_UP(n, 8);
2541
2542 /* Copy PPE Thresholds */
2543 skb_put_data(skb, &he_cap->ppe_thres, n);
2544
2545 end:
2546 *len = skb_tail_pointer(skb) - len - 1;
2547 return 0;
2548 }
2549
2550 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb,
2551 struct ieee80211_sub_if_data *sdata,
2552 enum ieee80211_smps_mode smps_mode)
2553 {
2554 struct ieee80211_supported_band *sband;
2555 const struct ieee80211_sband_iftype_data *iftd;
2556 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
2557 __le16 cap;
2558
2559 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
2560 BIT(NL80211_BAND_6GHZ),
2561 IEEE80211_CHAN_NO_HE))
2562 return 0;
2563
2564 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2565
2566 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
2567 if (!iftd)
2568 return 0;
2569
2570 /* Check for device HE 6 GHz capability before adding element */
2571 if (!iftd->he_6ghz_capa.capa)
2572 return 0;
2573
2574 cap = iftd->he_6ghz_capa.capa;
2575 cap &= cpu_to_le16(~IEEE80211_HE_6GHZ_CAP_SM_PS);
2576
2577 switch (smps_mode) {
2578 case IEEE80211_SMPS_AUTOMATIC:
2579 case IEEE80211_SMPS_NUM_MODES:
2580 WARN_ON(1);
2581 fallthrough;
2582 case IEEE80211_SMPS_OFF:
2583 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
2584 IEEE80211_HE_6GHZ_CAP_SM_PS);
2585 break;
2586 case IEEE80211_SMPS_STATIC:
2587 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
2588 IEEE80211_HE_6GHZ_CAP_SM_PS);
2589 break;
2590 case IEEE80211_SMPS_DYNAMIC:
2591 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
2592 IEEE80211_HE_6GHZ_CAP_SM_PS);
2593 break;
2594 }
2595
2596 if (skb_tailroom(skb) < 2 + 1 + sizeof(cap))
2597 return -ENOBUFS;
2598
2599 skb_put_u8(skb, WLAN_EID_EXTENSION);
2600 skb_put_u8(skb, 1 + sizeof(cap));
2601 skb_put_u8(skb, WLAN_EID_EXT_HE_6GHZ_CAPA);
2602 skb_put_data(skb, &cap, sizeof(cap));
2603 return 0;
2604 }
2605
2606 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2607 const struct cfg80211_chan_def *chandef,
2608 u16 prot_mode, bool rifs_mode)
2609 {
2610 struct ieee80211_ht_operation *ht_oper;
2611 /* Build HT Information */
2612 *pos++ = WLAN_EID_HT_OPERATION;
2613 *pos++ = sizeof(struct ieee80211_ht_operation);
2614 ht_oper = (struct ieee80211_ht_operation *)pos;
2615 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2616 chandef->chan->center_freq);
2617 switch (chandef->width) {
2618 case NL80211_CHAN_WIDTH_160:
2619 case NL80211_CHAN_WIDTH_80P80:
2620 case NL80211_CHAN_WIDTH_80:
2621 case NL80211_CHAN_WIDTH_40:
2622 if (chandef->center_freq1 > chandef->chan->center_freq)
2623 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2624 else
2625 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2626 break;
2627 case NL80211_CHAN_WIDTH_320:
2628 /* HT information element should not be included on 6GHz */
2629 WARN_ON(1);
2630 return pos;
2631 default:
2632 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2633 break;
2634 }
2635 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
2636 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2637 chandef->width != NL80211_CHAN_WIDTH_20)
2638 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
2639
2640 if (rifs_mode)
2641 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2642
2643 ht_oper->operation_mode = cpu_to_le16(prot_mode);
2644 ht_oper->stbc_param = 0x0000;
2645
2646 /* It seems that Basic MCS set and Supported MCS set
2647 are identical for the first 10 bytes */
2648 memset(&ht_oper->basic_set, 0, 16);
2649 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
2650
2651 return pos + sizeof(struct ieee80211_ht_operation);
2652 }
2653
2654 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2655 const struct cfg80211_chan_def *chandef)
2656 {
2657 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
2658 *pos++ = 3; /* IE length */
2659 /* New channel width */
2660 switch (chandef->width) {
2661 case NL80211_CHAN_WIDTH_80:
2662 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
2663 break;
2664 case NL80211_CHAN_WIDTH_160:
2665 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
2666 break;
2667 case NL80211_CHAN_WIDTH_80P80:
2668 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2669 break;
2670 case NL80211_CHAN_WIDTH_320:
2671 /* The behavior is not defined for 320 MHz channels */
2672 WARN_ON(1);
2673 fallthrough;
2674 default:
2675 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
2676 }
2677
2678 /* new center frequency segment 0 */
2679 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
2680 /* new center frequency segment 1 */
2681 if (chandef->center_freq2)
2682 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
2683 else
2684 *pos++ = 0;
2685 }
2686
2687 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2688 const struct cfg80211_chan_def *chandef)
2689 {
2690 struct ieee80211_vht_operation *vht_oper;
2691
2692 *pos++ = WLAN_EID_VHT_OPERATION;
2693 *pos++ = sizeof(struct ieee80211_vht_operation);
2694 vht_oper = (struct ieee80211_vht_operation *)pos;
2695 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
2696 chandef->center_freq1);
2697 if (chandef->center_freq2)
2698 vht_oper->center_freq_seg1_idx =
2699 ieee80211_frequency_to_channel(chandef->center_freq2);
2700 else
2701 vht_oper->center_freq_seg1_idx = 0x00;
2702
2703 switch (chandef->width) {
2704 case NL80211_CHAN_WIDTH_160:
2705 /*
2706 * Convert 160 MHz channel width to new style as interop
2707 * workaround.
2708 */
2709 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2710 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
2711 if (chandef->chan->center_freq < chandef->center_freq1)
2712 vht_oper->center_freq_seg0_idx -= 8;
2713 else
2714 vht_oper->center_freq_seg0_idx += 8;
2715 break;
2716 case NL80211_CHAN_WIDTH_80P80:
2717 /*
2718 * Convert 80+80 MHz channel width to new style as interop
2719 * workaround.
2720 */
2721 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2722 break;
2723 case NL80211_CHAN_WIDTH_80:
2724 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2725 break;
2726 case NL80211_CHAN_WIDTH_320:
2727 /* VHT information element should not be included on 6GHz */
2728 WARN_ON(1);
2729 return pos;
2730 default:
2731 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2732 break;
2733 }
2734
2735 /* don't require special VHT peer rates */
2736 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2737
2738 return pos + sizeof(struct ieee80211_vht_operation);
2739 }
2740
2741 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
2742 {
2743 struct ieee80211_he_operation *he_oper;
2744 struct ieee80211_he_6ghz_oper *he_6ghz_op;
2745 u32 he_oper_params;
2746 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
2747
2748 if (chandef->chan->band == NL80211_BAND_6GHZ)
2749 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
2750
2751 *pos++ = WLAN_EID_EXTENSION;
2752 *pos++ = ie_len;
2753 *pos++ = WLAN_EID_EXT_HE_OPERATION;
2754
2755 he_oper_params = 0;
2756 he_oper_params |= u32_encode_bits(1023, /* disabled */
2757 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
2758 he_oper_params |= u32_encode_bits(1,
2759 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
2760 he_oper_params |= u32_encode_bits(1,
2761 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
2762 if (chandef->chan->band == NL80211_BAND_6GHZ)
2763 he_oper_params |= u32_encode_bits(1,
2764 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
2765
2766 he_oper = (struct ieee80211_he_operation *)pos;
2767 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
2768
2769 /* don't require special HE peer rates */
2770 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
2771 pos += sizeof(struct ieee80211_he_operation);
2772
2773 if (chandef->chan->band != NL80211_BAND_6GHZ)
2774 goto out;
2775
2776 /* TODO add VHT operational */
2777 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
2778 he_6ghz_op->minrate = 6; /* 6 Mbps */
2779 he_6ghz_op->primary =
2780 ieee80211_frequency_to_channel(chandef->chan->center_freq);
2781 he_6ghz_op->ccfs0 =
2782 ieee80211_frequency_to_channel(chandef->center_freq1);
2783 if (chandef->center_freq2)
2784 he_6ghz_op->ccfs1 =
2785 ieee80211_frequency_to_channel(chandef->center_freq2);
2786 else
2787 he_6ghz_op->ccfs1 = 0;
2788
2789 switch (chandef->width) {
2790 case NL80211_CHAN_WIDTH_320:
2791 /*
2792 * TODO: mesh operation is not defined over 6GHz 320 MHz
2793 * channels.
2794 */
2795 WARN_ON(1);
2796 break;
2797 case NL80211_CHAN_WIDTH_160:
2798 /* Convert 160 MHz channel width to new style as interop
2799 * workaround.
2800 */
2801 he_6ghz_op->control =
2802 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
2803 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
2804 if (chandef->chan->center_freq < chandef->center_freq1)
2805 he_6ghz_op->ccfs0 -= 8;
2806 else
2807 he_6ghz_op->ccfs0 += 8;
2808 fallthrough;
2809 case NL80211_CHAN_WIDTH_80P80:
2810 he_6ghz_op->control =
2811 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
2812 break;
2813 case NL80211_CHAN_WIDTH_80:
2814 he_6ghz_op->control =
2815 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
2816 break;
2817 case NL80211_CHAN_WIDTH_40:
2818 he_6ghz_op->control =
2819 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
2820 break;
2821 default:
2822 he_6ghz_op->control =
2823 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
2824 break;
2825 }
2826
2827 pos += sizeof(struct ieee80211_he_6ghz_oper);
2828
2829 out:
2830 return pos;
2831 }
2832
2833 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef,
2834 const struct ieee80211_sta_eht_cap *eht_cap)
2835
2836 {
2837 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss =
2838 &eht_cap->eht_mcs_nss_supp.only_20mhz;
2839 struct ieee80211_eht_operation *eht_oper;
2840 struct ieee80211_eht_operation_info *eht_oper_info;
2841 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional);
2842 u8 eht_oper_info_len =
2843 offsetof(struct ieee80211_eht_operation_info, optional);
2844 u8 chan_width = 0;
2845
2846 *pos++ = WLAN_EID_EXTENSION;
2847 *pos++ = 1 + eht_oper_len + eht_oper_info_len;
2848 *pos++ = WLAN_EID_EXT_EHT_OPERATION;
2849
2850 eht_oper = (struct ieee80211_eht_operation *)pos;
2851
2852 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss));
2853 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT;
2854 pos += eht_oper_len;
2855
2856 eht_oper_info =
2857 (struct ieee80211_eht_operation_info *)eht_oper->optional;
2858
2859 eht_oper_info->ccfs0 =
2860 ieee80211_frequency_to_channel(chandef->center_freq1);
2861 if (chandef->center_freq2)
2862 eht_oper_info->ccfs1 =
2863 ieee80211_frequency_to_channel(chandef->center_freq2);
2864 else
2865 eht_oper_info->ccfs1 = 0;
2866
2867 switch (chandef->width) {
2868 case NL80211_CHAN_WIDTH_320:
2869 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ;
2870 eht_oper_info->ccfs1 = eht_oper_info->ccfs0;
2871 if (chandef->chan->center_freq < chandef->center_freq1)
2872 eht_oper_info->ccfs0 -= 16;
2873 else
2874 eht_oper_info->ccfs0 += 16;
2875 break;
2876 case NL80211_CHAN_WIDTH_160:
2877 eht_oper_info->ccfs1 = eht_oper_info->ccfs0;
2878 if (chandef->chan->center_freq < chandef->center_freq1)
2879 eht_oper_info->ccfs0 -= 8;
2880 else
2881 eht_oper_info->ccfs0 += 8;
2882 fallthrough;
2883 case NL80211_CHAN_WIDTH_80P80:
2884 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ;
2885 break;
2886 case NL80211_CHAN_WIDTH_80:
2887 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ;
2888 break;
2889 case NL80211_CHAN_WIDTH_40:
2890 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ;
2891 break;
2892 default:
2893 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ;
2894 break;
2895 }
2896 eht_oper_info->control = chan_width;
2897 pos += eht_oper_info_len;
2898
2899 /* TODO: eht_oper_info->optional */
2900
2901 return pos;
2902 }
2903
2904 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2905 struct cfg80211_chan_def *chandef)
2906 {
2907 enum nl80211_channel_type channel_type;
2908
2909 if (!ht_oper)
2910 return false;
2911
2912 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
2913 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2914 channel_type = NL80211_CHAN_HT20;
2915 break;
2916 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2917 channel_type = NL80211_CHAN_HT40PLUS;
2918 break;
2919 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2920 channel_type = NL80211_CHAN_HT40MINUS;
2921 break;
2922 default:
2923 return false;
2924 }
2925
2926 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
2927 return true;
2928 }
2929
2930 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2931 const struct ieee80211_vht_operation *oper,
2932 const struct ieee80211_ht_operation *htop,
2933 struct cfg80211_chan_def *chandef)
2934 {
2935 struct cfg80211_chan_def new = *chandef;
2936 int cf0, cf1;
2937 int ccfs0, ccfs1, ccfs2;
2938 int ccf0, ccf1;
2939 u32 vht_cap;
2940 bool support_80_80 = false;
2941 bool support_160 = false;
2942 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
2943 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
2944 u8 supp_chwidth = u32_get_bits(vht_cap_info,
2945 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
2946
2947 if (!oper || !htop)
2948 return false;
2949
2950 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
2951 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
2952 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
2953 support_80_80 = ((vht_cap &
2954 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
2955 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
2956 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
2957 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
2958 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
2959 ccfs0 = oper->center_freq_seg0_idx;
2960 ccfs1 = oper->center_freq_seg1_idx;
2961 ccfs2 = (le16_to_cpu(htop->operation_mode) &
2962 IEEE80211_HT_OP_MODE_CCFS2_MASK)
2963 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
2964
2965 ccf0 = ccfs0;
2966
2967 /* if not supported, parse as though we didn't understand it */
2968 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
2969 ext_nss_bw_supp = 0;
2970
2971 /*
2972 * Cf. IEEE 802.11 Table 9-250
2973 *
2974 * We really just consider that because it's inefficient to connect
2975 * at a higher bandwidth than we'll actually be able to use.
2976 */
2977 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
2978 default:
2979 case 0x00:
2980 ccf1 = 0;
2981 support_160 = false;
2982 support_80_80 = false;
2983 break;
2984 case 0x01:
2985 support_80_80 = false;
2986 fallthrough;
2987 case 0x02:
2988 case 0x03:
2989 ccf1 = ccfs2;
2990 break;
2991 case 0x10:
2992 ccf1 = ccfs1;
2993 break;
2994 case 0x11:
2995 case 0x12:
2996 if (!ccfs1)
2997 ccf1 = ccfs2;
2998 else
2999 ccf1 = ccfs1;
3000 break;
3001 case 0x13:
3002 case 0x20:
3003 case 0x23:
3004 ccf1 = ccfs1;
3005 break;
3006 }
3007
3008 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3009 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3010
3011 switch (oper->chan_width) {
3012 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3013 /* just use HT information directly */
3014 break;
3015 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3016 new.width = NL80211_CHAN_WIDTH_80;
3017 new.center_freq1 = cf0;
3018 /* If needed, adjust based on the newer interop workaround. */
3019 if (ccf1) {
3020 unsigned int diff;
3021
3022 diff = abs(ccf1 - ccf0);
3023 if ((diff == 8) && support_160) {
3024 new.width = NL80211_CHAN_WIDTH_160;
3025 new.center_freq1 = cf1;
3026 } else if ((diff > 8) && support_80_80) {
3027 new.width = NL80211_CHAN_WIDTH_80P80;
3028 new.center_freq2 = cf1;
3029 }
3030 }
3031 break;
3032 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3033 /* deprecated encoding */
3034 new.width = NL80211_CHAN_WIDTH_160;
3035 new.center_freq1 = cf0;
3036 break;
3037 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3038 /* deprecated encoding */
3039 new.width = NL80211_CHAN_WIDTH_80P80;
3040 new.center_freq1 = cf0;
3041 new.center_freq2 = cf1;
3042 break;
3043 default:
3044 return false;
3045 }
3046
3047 if (!cfg80211_chandef_valid(&new))
3048 return false;
3049
3050 *chandef = new;
3051 return true;
3052 }
3053
3054 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info,
3055 struct cfg80211_chan_def *chandef)
3056 {
3057 chandef->center_freq1 =
3058 ieee80211_channel_to_frequency(info->ccfs0,
3059 chandef->chan->band);
3060
3061 switch (u8_get_bits(info->control,
3062 IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3063 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3064 chandef->width = NL80211_CHAN_WIDTH_20;
3065 break;
3066 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3067 chandef->width = NL80211_CHAN_WIDTH_40;
3068 break;
3069 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3070 chandef->width = NL80211_CHAN_WIDTH_80;
3071 break;
3072 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
3073 chandef->width = NL80211_CHAN_WIDTH_160;
3074 chandef->center_freq1 =
3075 ieee80211_channel_to_frequency(info->ccfs1,
3076 chandef->chan->band);
3077 break;
3078 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
3079 chandef->width = NL80211_CHAN_WIDTH_320;
3080 chandef->center_freq1 =
3081 ieee80211_channel_to_frequency(info->ccfs1,
3082 chandef->chan->band);
3083 break;
3084 }
3085 }
3086
3087 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local,
3088 const struct ieee80211_he_operation *he_oper,
3089 const struct ieee80211_eht_operation *eht_oper,
3090 struct cfg80211_chan_def *chandef)
3091 {
3092 struct cfg80211_chan_def he_chandef = *chandef;
3093 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3094 u32 freq;
3095
3096 if (chandef->chan->band != NL80211_BAND_6GHZ)
3097 return true;
3098
3099 if (!he_oper)
3100 return false;
3101
3102 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3103 if (!he_6ghz_oper)
3104 return false;
3105
3106 /*
3107 * The EHT operation IE does not contain the primary channel so the
3108 * primary channel frequency should be taken from the 6 GHz operation
3109 * information.
3110 */
3111 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3112 NL80211_BAND_6GHZ);
3113 he_chandef.chan = ieee80211_get_channel(local->hw.wiphy, freq);
3114
3115 if (!he_chandef.chan)
3116 return false;
3117
3118 if (!eht_oper ||
3119 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) {
3120 switch (u8_get_bits(he_6ghz_oper->control,
3121 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3122 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3123 he_chandef.width = NL80211_CHAN_WIDTH_20;
3124 break;
3125 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3126 he_chandef.width = NL80211_CHAN_WIDTH_40;
3127 break;
3128 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3129 he_chandef.width = NL80211_CHAN_WIDTH_80;
3130 break;
3131 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3132 he_chandef.width = NL80211_CHAN_WIDTH_80;
3133 if (!he_6ghz_oper->ccfs1)
3134 break;
3135 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8)
3136 he_chandef.width = NL80211_CHAN_WIDTH_160;
3137 else
3138 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3139 break;
3140 }
3141
3142 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3143 he_chandef.center_freq1 =
3144 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3145 NL80211_BAND_6GHZ);
3146 } else {
3147 he_chandef.center_freq1 =
3148 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3149 NL80211_BAND_6GHZ);
3150 he_chandef.center_freq2 =
3151 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3152 NL80211_BAND_6GHZ);
3153 }
3154 } else {
3155 ieee80211_chandef_eht_oper((const void *)eht_oper->optional,
3156 &he_chandef);
3157 he_chandef.punctured =
3158 ieee80211_eht_oper_dis_subchan_bitmap(eht_oper);
3159 }
3160
3161 if (!cfg80211_chandef_valid(&he_chandef))
3162 return false;
3163
3164 *chandef = he_chandef;
3165
3166 return true;
3167 }
3168
3169 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3170 struct cfg80211_chan_def *chandef)
3171 {
3172 u32 oper_freq;
3173
3174 if (!oper)
3175 return false;
3176
3177 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3178 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3179 chandef->width = NL80211_CHAN_WIDTH_1;
3180 break;
3181 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3182 chandef->width = NL80211_CHAN_WIDTH_2;
3183 break;
3184 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3185 chandef->width = NL80211_CHAN_WIDTH_4;
3186 break;
3187 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3188 chandef->width = NL80211_CHAN_WIDTH_8;
3189 break;
3190 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3191 chandef->width = NL80211_CHAN_WIDTH_16;
3192 break;
3193 default:
3194 return false;
3195 }
3196
3197 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3198 NL80211_BAND_S1GHZ);
3199 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3200 chandef->freq1_offset = oper_freq % 1000;
3201
3202 return true;
3203 }
3204
3205 int ieee80211_put_srates_elem(struct sk_buff *skb,
3206 const struct ieee80211_supported_band *sband,
3207 u32 basic_rates, u32 rate_flags, u32 masked_rates,
3208 u8 element_id)
3209 {
3210 u8 i, rates, skip;
3211
3212 rates = 0;
3213 for (i = 0; i < sband->n_bitrates; i++) {
3214 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3215 continue;
3216 if (masked_rates & BIT(i))
3217 continue;
3218 rates++;
3219 }
3220
3221 if (element_id == WLAN_EID_SUPP_RATES) {
3222 rates = min_t(u8, rates, 8);
3223 skip = 0;
3224 } else {
3225 skip = 8;
3226 if (rates <= skip)
3227 return 0;
3228 rates -= skip;
3229 }
3230
3231 if (skb_tailroom(skb) < rates + 2)
3232 return -ENOBUFS;
3233
3234 skb_put_u8(skb, element_id);
3235 skb_put_u8(skb, rates);
3236
3237 for (i = 0; i < sband->n_bitrates && rates; i++) {
3238 int rate;
3239 u8 basic;
3240
3241 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3242 continue;
3243 if (masked_rates & BIT(i))
3244 continue;
3245
3246 if (skip > 0) {
3247 skip--;
3248 continue;
3249 }
3250
3251 basic = basic_rates & BIT(i) ? 0x80 : 0;
3252
3253 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5);
3254 skb_put_u8(skb, basic | (u8)rate);
3255 rates--;
3256 }
3257
3258 WARN(rates > 0, "rates confused: rates:%d, element:%d\n",
3259 rates, element_id);
3260
3261 return 0;
3262 }
3263
3264 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3265 {
3266 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3267
3268 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3269 return 0;
3270
3271 return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal);
3272 }
3273 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3274
3275 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3276 {
3277 if (!mcs)
3278 return 1;
3279
3280 /* TODO: consider rx_highest */
3281
3282 if (mcs->rx_mask[3])
3283 return 4;
3284 if (mcs->rx_mask[2])
3285 return 3;
3286 if (mcs->rx_mask[1])
3287 return 2;
3288 return 1;
3289 }
3290
3291 /**
3292 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3293 * @local: mac80211 hw info struct
3294 * @status: RX status
3295 * @mpdu_len: total MPDU length (including FCS)
3296 * @mpdu_offset: offset into MPDU to calculate timestamp at
3297 *
3298 * This function calculates the RX timestamp at the given MPDU offset, taking
3299 * into account what the RX timestamp was. An offset of 0 will just normalize
3300 * the timestamp to TSF at beginning of MPDU reception.
3301 *
3302 * Returns: the calculated timestamp
3303 */
3304 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3305 struct ieee80211_rx_status *status,
3306 unsigned int mpdu_len,
3307 unsigned int mpdu_offset)
3308 {
3309 u64 ts = status->mactime;
3310 bool mactime_plcp_start;
3311 struct rate_info ri;
3312 u16 rate;
3313 u8 n_ltf;
3314
3315 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3316 return 0;
3317
3318 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) ==
3319 RX_FLAG_MACTIME_PLCP_START;
3320
3321 memset(&ri, 0, sizeof(ri));
3322
3323 ri.bw = status->bw;
3324
3325 /* Fill cfg80211 rate info */
3326 switch (status->encoding) {
3327 case RX_ENC_EHT:
3328 ri.flags |= RATE_INFO_FLAGS_EHT_MCS;
3329 ri.mcs = status->rate_idx;
3330 ri.nss = status->nss;
3331 ri.eht_ru_alloc = status->eht.ru;
3332 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3333 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3334 /* TODO/FIXME: is this right? handle other PPDUs */
3335 if (mactime_plcp_start) {
3336 mpdu_offset += 2;
3337 ts += 36;
3338 }
3339 break;
3340 case RX_ENC_HE:
3341 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3342 ri.mcs = status->rate_idx;
3343 ri.nss = status->nss;
3344 ri.he_ru_alloc = status->he_ru;
3345 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3346 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3347
3348 /*
3349 * See P802.11ax_D6.0, section 27.3.4 for
3350 * VHT PPDU format.
3351 */
3352 if (mactime_plcp_start) {
3353 mpdu_offset += 2;
3354 ts += 36;
3355
3356 /*
3357 * TODO:
3358 * For HE MU PPDU, add the HE-SIG-B.
3359 * For HE ER PPDU, add 8us for the HE-SIG-A.
3360 * For HE TB PPDU, add 4us for the HE-STF.
3361 * Add the HE-LTF durations - variable.
3362 */
3363 }
3364
3365 break;
3366 case RX_ENC_HT:
3367 ri.mcs = status->rate_idx;
3368 ri.flags |= RATE_INFO_FLAGS_MCS;
3369 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3370 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3371
3372 /*
3373 * See P802.11REVmd_D3.0, section 19.3.2 for
3374 * HT PPDU format.
3375 */
3376 if (mactime_plcp_start) {
3377 mpdu_offset += 2;
3378 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3379 ts += 24;
3380 else
3381 ts += 32;
3382
3383 /*
3384 * Add Data HT-LTFs per streams
3385 * TODO: add Extension HT-LTFs, 4us per LTF
3386 */
3387 n_ltf = ((ri.mcs >> 3) & 3) + 1;
3388 n_ltf = n_ltf == 3 ? 4 : n_ltf;
3389 ts += n_ltf * 4;
3390 }
3391
3392 break;
3393 case RX_ENC_VHT:
3394 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3395 ri.mcs = status->rate_idx;
3396 ri.nss = status->nss;
3397 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3398 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3399
3400 /*
3401 * See P802.11REVmd_D3.0, section 21.3.2 for
3402 * VHT PPDU format.
3403 */
3404 if (mactime_plcp_start) {
3405 mpdu_offset += 2;
3406 ts += 36;
3407
3408 /*
3409 * Add VHT-LTFs per streams
3410 */
3411 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3412 ri.nss + 1 : ri.nss;
3413 ts += 4 * n_ltf;
3414 }
3415
3416 break;
3417 default:
3418 WARN_ON(1);
3419 fallthrough;
3420 case RX_ENC_LEGACY: {
3421 struct ieee80211_supported_band *sband;
3422
3423 sband = local->hw.wiphy->bands[status->band];
3424 ri.legacy = sband->bitrates[status->rate_idx].bitrate;
3425
3426 if (mactime_plcp_start) {
3427 if (status->band == NL80211_BAND_5GHZ) {
3428 ts += 20;
3429 mpdu_offset += 2;
3430 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3431 ts += 96;
3432 } else {
3433 ts += 192;
3434 }
3435 }
3436 break;
3437 }
3438 }
3439
3440 rate = cfg80211_calculate_bitrate(&ri);
3441 if (WARN_ONCE(!rate,
3442 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3443 (unsigned long long)status->flag, status->rate_idx,
3444 status->nss))
3445 return 0;
3446
3447 /* rewind from end of MPDU */
3448 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END)
3449 ts -= mpdu_len * 8 * 10 / rate;
3450
3451 ts += mpdu_offset * 8 * 10 / rate;
3452
3453 return ts;
3454 }
3455
3456 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3457 {
3458 struct ieee80211_sub_if_data *sdata;
3459 struct cfg80211_chan_def chandef;
3460
3461 lockdep_assert_wiphy(local->hw.wiphy);
3462
3463 list_for_each_entry(sdata, &local->interfaces, list) {
3464 wiphy_delayed_work_cancel(local->hw.wiphy,
3465 &sdata->dfs_cac_timer_work);
3466
3467 if (sdata->wdev.cac_started) {
3468 chandef = sdata->vif.bss_conf.chanreq.oper;
3469 ieee80211_link_release_channel(&sdata->deflink);
3470 cfg80211_cac_event(sdata->dev,
3471 &chandef,
3472 NL80211_RADAR_CAC_ABORTED,
3473 GFP_KERNEL);
3474 }
3475 }
3476 }
3477
3478 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy,
3479 struct wiphy_work *work)
3480 {
3481 struct ieee80211_local *local =
3482 container_of(work, struct ieee80211_local, radar_detected_work);
3483 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3484 struct ieee80211_chanctx *ctx;
3485 int num_chanctx = 0;
3486
3487 lockdep_assert_wiphy(local->hw.wiphy);
3488
3489 list_for_each_entry(ctx, &local->chanctx_list, list) {
3490 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3491 continue;
3492
3493 num_chanctx++;
3494 chandef = ctx->conf.def;
3495 }
3496
3497 ieee80211_dfs_cac_cancel(local);
3498
3499 if (num_chanctx > 1)
3500 /* XXX: multi-channel is not supported yet */
3501 WARN_ON(1);
3502 else
3503 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
3504 }
3505
3506 void ieee80211_radar_detected(struct ieee80211_hw *hw)
3507 {
3508 struct ieee80211_local *local = hw_to_local(hw);
3509
3510 trace_api_radar_detected(local);
3511
3512 wiphy_work_queue(hw->wiphy, &local->radar_detected_work);
3513 }
3514 EXPORT_SYMBOL(ieee80211_radar_detected);
3515
3516 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c,
3517 struct ieee80211_conn_settings *conn)
3518 {
3519 enum nl80211_chan_width new_primary_width;
3520 struct ieee80211_conn_settings _ignored = {};
3521
3522 /* allow passing NULL if caller doesn't care */
3523 if (!conn)
3524 conn = &_ignored;
3525
3526 again:
3527 /* no-HT indicates nothing to do */
3528 new_primary_width = NL80211_CHAN_WIDTH_20_NOHT;
3529
3530 switch (c->width) {
3531 default:
3532 case NL80211_CHAN_WIDTH_20_NOHT:
3533 WARN_ON_ONCE(1);
3534 fallthrough;
3535 case NL80211_CHAN_WIDTH_20:
3536 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3537 conn->mode = IEEE80211_CONN_MODE_LEGACY;
3538 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
3539 c->punctured = 0;
3540 break;
3541 case NL80211_CHAN_WIDTH_40:
3542 c->width = NL80211_CHAN_WIDTH_20;
3543 c->center_freq1 = c->chan->center_freq;
3544 if (conn->mode == IEEE80211_CONN_MODE_VHT)
3545 conn->mode = IEEE80211_CONN_MODE_HT;
3546 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
3547 c->punctured = 0;
3548 break;
3549 case NL80211_CHAN_WIDTH_80:
3550 new_primary_width = NL80211_CHAN_WIDTH_40;
3551 if (conn->mode == IEEE80211_CONN_MODE_VHT)
3552 conn->mode = IEEE80211_CONN_MODE_HT;
3553 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40;
3554 break;
3555 case NL80211_CHAN_WIDTH_80P80:
3556 c->center_freq2 = 0;
3557 c->width = NL80211_CHAN_WIDTH_80;
3558 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80;
3559 break;
3560 case NL80211_CHAN_WIDTH_160:
3561 new_primary_width = NL80211_CHAN_WIDTH_80;
3562 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80;
3563 break;
3564 case NL80211_CHAN_WIDTH_320:
3565 new_primary_width = NL80211_CHAN_WIDTH_160;
3566 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160;
3567 break;
3568 case NL80211_CHAN_WIDTH_1:
3569 case NL80211_CHAN_WIDTH_2:
3570 case NL80211_CHAN_WIDTH_4:
3571 case NL80211_CHAN_WIDTH_8:
3572 case NL80211_CHAN_WIDTH_16:
3573 WARN_ON_ONCE(1);
3574 /* keep c->width */
3575 conn->mode = IEEE80211_CONN_MODE_S1G;
3576 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
3577 break;
3578 case NL80211_CHAN_WIDTH_5:
3579 case NL80211_CHAN_WIDTH_10:
3580 WARN_ON_ONCE(1);
3581 /* keep c->width */
3582 conn->mode = IEEE80211_CONN_MODE_LEGACY;
3583 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
3584 break;
3585 }
3586
3587 if (new_primary_width != NL80211_CHAN_WIDTH_20_NOHT) {
3588 c->center_freq1 = cfg80211_chandef_primary(c, new_primary_width,
3589 &c->punctured);
3590 c->width = new_primary_width;
3591 }
3592
3593 /*
3594 * With an 80 MHz channel, we might have the puncturing in the primary
3595 * 40 Mhz channel, but that's not valid when downgraded to 40 MHz width.
3596 * In that case, downgrade again.
3597 */
3598 if (!cfg80211_chandef_valid(c) && c->punctured)
3599 goto again;
3600
3601 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3602 }
3603
3604 /*
3605 * Returns true if smps_mode_new is strictly more restrictive than
3606 * smps_mode_old.
3607 */
3608 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3609 enum ieee80211_smps_mode smps_mode_new)
3610 {
3611 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3612 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3613 return false;
3614
3615 switch (smps_mode_old) {
3616 case IEEE80211_SMPS_STATIC:
3617 return false;
3618 case IEEE80211_SMPS_DYNAMIC:
3619 return smps_mode_new == IEEE80211_SMPS_STATIC;
3620 case IEEE80211_SMPS_OFF:
3621 return smps_mode_new != IEEE80211_SMPS_OFF;
3622 default:
3623 WARN_ON(1);
3624 }
3625
3626 return false;
3627 }
3628
3629 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3630 struct cfg80211_csa_settings *csa_settings)
3631 {
3632 struct sk_buff *skb;
3633 struct ieee80211_mgmt *mgmt;
3634 struct ieee80211_local *local = sdata->local;
3635 int freq;
3636 int hdr_len = offsetofend(struct ieee80211_mgmt,
3637 u.action.u.chan_switch);
3638 u8 *pos;
3639
3640 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3641 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3642 return -EOPNOTSUPP;
3643
3644 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3645 5 + /* channel switch announcement element */
3646 3 + /* secondary channel offset element */
3647 5 + /* wide bandwidth channel switch announcement */
3648 8); /* mesh channel switch parameters element */
3649 if (!skb)
3650 return -ENOMEM;
3651
3652 skb_reserve(skb, local->tx_headroom);
3653 mgmt = skb_put_zero(skb, hdr_len);
3654 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3655 IEEE80211_STYPE_ACTION);
3656
3657 eth_broadcast_addr(mgmt->da);
3658 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3659 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3660 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3661 } else {
3662 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3663 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3664 }
3665 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3666 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3667 pos = skb_put(skb, 5);
3668 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3669 *pos++ = 3; /* IE length */
3670 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3671 freq = csa_settings->chandef.chan->center_freq;
3672 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3673 *pos++ = csa_settings->count; /* count */
3674
3675 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3676 enum nl80211_channel_type ch_type;
3677
3678 skb_put(skb, 3);
3679 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3680 *pos++ = 1; /* IE length */
3681 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3682 if (ch_type == NL80211_CHAN_HT40PLUS)
3683 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3684 else
3685 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3686 }
3687
3688 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3689 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3690
3691 skb_put(skb, 8);
3692 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3693 *pos++ = 6; /* IE length */
3694 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3695 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3696 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3697 *pos++ |= csa_settings->block_tx ?
3698 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3699 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3700 pos += 2;
3701 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
3702 pos += 2;
3703 }
3704
3705 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3706 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3707 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3708 skb_put(skb, 5);
3709 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3710 }
3711
3712 ieee80211_tx_skb(sdata, skb);
3713 return 0;
3714 }
3715
3716 static bool
3717 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3718 {
3719 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3720 int skip;
3721
3722 if (end > 0)
3723 return false;
3724
3725 /* One shot NOA */
3726 if (data->count[i] == 1)
3727 return false;
3728
3729 if (data->desc[i].interval == 0)
3730 return false;
3731
3732 /* End time is in the past, check for repetitions */
3733 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3734 if (data->count[i] < 255) {
3735 if (data->count[i] <= skip) {
3736 data->count[i] = 0;
3737 return false;
3738 }
3739
3740 data->count[i] -= skip;
3741 }
3742
3743 data->desc[i].start += skip * data->desc[i].interval;
3744
3745 return true;
3746 }
3747
3748 static bool
3749 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3750 s32 *offset)
3751 {
3752 bool ret = false;
3753 int i;
3754
3755 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3756 s32 cur;
3757
3758 if (!data->count[i])
3759 continue;
3760
3761 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3762 ret = true;
3763
3764 cur = data->desc[i].start - tsf;
3765 if (cur > *offset)
3766 continue;
3767
3768 cur = data->desc[i].start + data->desc[i].duration - tsf;
3769 if (cur > *offset)
3770 *offset = cur;
3771 }
3772
3773 return ret;
3774 }
3775
3776 static u32
3777 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3778 {
3779 s32 offset = 0;
3780 int tries = 0;
3781 /*
3782 * arbitrary limit, used to avoid infinite loops when combined NoA
3783 * descriptors cover the full time period.
3784 */
3785 int max_tries = 5;
3786
3787 ieee80211_extend_absent_time(data, tsf, &offset);
3788 do {
3789 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3790 break;
3791
3792 tries++;
3793 } while (tries < max_tries);
3794
3795 return offset;
3796 }
3797
3798 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3799 {
3800 u32 next_offset = BIT(31) - 1;
3801 int i;
3802
3803 data->absent = 0;
3804 data->has_next_tsf = false;
3805 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3806 s32 start;
3807
3808 if (!data->count[i])
3809 continue;
3810
3811 ieee80211_extend_noa_desc(data, tsf, i);
3812 start = data->desc[i].start - tsf;
3813 if (start <= 0)
3814 data->absent |= BIT(i);
3815
3816 if (next_offset > start)
3817 next_offset = start;
3818
3819 data->has_next_tsf = true;
3820 }
3821
3822 if (data->absent)
3823 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3824
3825 data->next_tsf = tsf + next_offset;
3826 }
3827 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3828
3829 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3830 struct ieee80211_noa_data *data, u32 tsf)
3831 {
3832 int ret = 0;
3833 int i;
3834
3835 memset(data, 0, sizeof(*data));
3836
3837 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3838 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3839
3840 if (!desc->count || !desc->duration)
3841 continue;
3842
3843 data->count[i] = desc->count;
3844 data->desc[i].start = le32_to_cpu(desc->start_time);
3845 data->desc[i].duration = le32_to_cpu(desc->duration);
3846 data->desc[i].interval = le32_to_cpu(desc->interval);
3847
3848 if (data->count[i] > 1 &&
3849 data->desc[i].interval < data->desc[i].duration)
3850 continue;
3851
3852 ieee80211_extend_noa_desc(data, tsf, i);
3853 ret++;
3854 }
3855
3856 if (ret)
3857 ieee80211_update_p2p_noa(data, tsf);
3858
3859 return ret;
3860 }
3861 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
3862
3863 void ieee80211_recalc_dtim(struct ieee80211_local *local,
3864 struct ieee80211_sub_if_data *sdata)
3865 {
3866 u64 tsf = drv_get_tsf(local, sdata);
3867 u64 dtim_count = 0;
3868 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3869 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3870 struct ps_data *ps;
3871 u8 bcns_from_dtim;
3872
3873 if (tsf == -1ULL || !beacon_int || !dtim_period)
3874 return;
3875
3876 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3877 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3878 if (!sdata->bss)
3879 return;
3880
3881 ps = &sdata->bss->ps;
3882 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3883 ps = &sdata->u.mesh.ps;
3884 } else {
3885 return;
3886 }
3887
3888 /*
3889 * actually finds last dtim_count, mac80211 will update in
3890 * __beacon_add_tim().
3891 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3892 */
3893 do_div(tsf, beacon_int);
3894 bcns_from_dtim = do_div(tsf, dtim_period);
3895 /* just had a DTIM */
3896 if (!bcns_from_dtim)
3897 dtim_count = 0;
3898 else
3899 dtim_count = dtim_period - bcns_from_dtim;
3900
3901 ps->dtim_count = dtim_count;
3902 }
3903
3904 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3905 struct ieee80211_chanctx *ctx)
3906 {
3907 struct ieee80211_link_data *link;
3908 u8 radar_detect = 0;
3909
3910 lockdep_assert_wiphy(local->hw.wiphy);
3911
3912 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3913 return 0;
3914
3915 list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list)
3916 if (link->reserved_radar_required)
3917 radar_detect |= BIT(link->reserved.oper.width);
3918
3919 /*
3920 * An in-place reservation context should not have any assigned vifs
3921 * until it replaces the other context.
3922 */
3923 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
3924 !list_empty(&ctx->assigned_links));
3925
3926 list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) {
3927 if (!link->radar_required)
3928 continue;
3929
3930 radar_detect |=
3931 BIT(link->conf->chanreq.oper.width);
3932 }
3933
3934 return radar_detect;
3935 }
3936
3937 static u32
3938 __ieee80211_get_radio_mask(struct ieee80211_sub_if_data *sdata)
3939 {
3940 struct ieee80211_bss_conf *link_conf;
3941 struct ieee80211_chanctx_conf *conf;
3942 unsigned int link_id;
3943 u32 mask = 0;
3944
3945 for_each_vif_active_link(&sdata->vif, link_conf, link_id) {
3946 conf = sdata_dereference(link_conf->chanctx_conf, sdata);
3947 if (!conf || conf->radio_idx < 0)
3948 continue;
3949
3950 mask |= BIT(conf->radio_idx);
3951 }
3952
3953 return mask;
3954 }
3955
3956 u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev)
3957 {
3958 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3959
3960 return __ieee80211_get_radio_mask(sdata);
3961 }
3962
3963 static bool
3964 ieee80211_sdata_uses_radio(struct ieee80211_sub_if_data *sdata, int radio_idx)
3965 {
3966 if (radio_idx < 0)
3967 return true;
3968
3969 return __ieee80211_get_radio_mask(sdata) & BIT(radio_idx);
3970 }
3971
3972 static int
3973 ieee80211_fill_ifcomb_params(struct ieee80211_local *local,
3974 struct iface_combination_params *params,
3975 const struct cfg80211_chan_def *chandef,
3976 struct ieee80211_sub_if_data *sdata)
3977 {
3978 struct ieee80211_sub_if_data *sdata_iter;
3979 struct ieee80211_chanctx *ctx;
3980 int total = !!sdata;
3981
3982 list_for_each_entry(ctx, &local->chanctx_list, list) {
3983 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3984 continue;
3985
3986 if (params->radio_idx >= 0 &&
3987 ctx->conf.radio_idx != params->radio_idx)
3988 continue;
3989
3990 params->radar_detect |=
3991 ieee80211_chanctx_radar_detect(local, ctx);
3992
3993 if (chandef && ctx->mode != IEEE80211_CHANCTX_EXCLUSIVE &&
3994 cfg80211_chandef_compatible(chandef, &ctx->conf.def))
3995 continue;
3996
3997 params->num_different_channels++;
3998 }
3999
4000 list_for_each_entry(sdata_iter, &local->interfaces, list) {
4001 struct wireless_dev *wdev_iter;
4002
4003 wdev_iter = &sdata_iter->wdev;
4004
4005 if (sdata_iter == sdata ||
4006 !ieee80211_sdata_running(sdata_iter) ||
4007 cfg80211_iftype_allowed(local->hw.wiphy,
4008 wdev_iter->iftype, 0, 1))
4009 continue;
4010
4011 if (!ieee80211_sdata_uses_radio(sdata_iter, params->radio_idx))
4012 continue;
4013
4014 params->iftype_num[wdev_iter->iftype]++;
4015 total++;
4016 }
4017
4018 return total;
4019 }
4020
4021 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4022 const struct cfg80211_chan_def *chandef,
4023 enum ieee80211_chanctx_mode chanmode,
4024 u8 radar_detect, int radio_idx)
4025 {
4026 bool shared = chanmode == IEEE80211_CHANCTX_SHARED;
4027 struct ieee80211_local *local = sdata->local;
4028 enum nl80211_iftype iftype = sdata->wdev.iftype;
4029 struct iface_combination_params params = {
4030 .radar_detect = radar_detect,
4031 .radio_idx = radio_idx,
4032 };
4033 int total;
4034
4035 lockdep_assert_wiphy(local->hw.wiphy);
4036
4037 if (WARN_ON(hweight32(radar_detect) > 1))
4038 return -EINVAL;
4039
4040 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4041 !chandef->chan))
4042 return -EINVAL;
4043
4044 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4045 return -EINVAL;
4046
4047 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4048 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4049 /*
4050 * always passing this is harmless, since it'll be the
4051 * same value that cfg80211 finds if it finds the same
4052 * interface ... and that's always allowed
4053 */
4054 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4055 }
4056
4057 /* Always allow software iftypes */
4058 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4059 if (radar_detect)
4060 return -EINVAL;
4061 return 0;
4062 }
4063
4064 if (chandef)
4065 params.num_different_channels = 1;
4066
4067 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4068 params.iftype_num[iftype] = 1;
4069
4070 total = ieee80211_fill_ifcomb_params(local, ¶ms,
4071 shared ? chandef : NULL,
4072 sdata);
4073 if (total == 1 && !params.radar_detect)
4074 return 0;
4075
4076 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4077 }
4078
4079 static void
4080 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4081 void *data)
4082 {
4083 u32 *max_num_different_channels = data;
4084
4085 *max_num_different_channels = max(*max_num_different_channels,
4086 c->num_different_channels);
4087 }
4088
4089 int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx)
4090 {
4091 u32 max_num_different_channels = 1;
4092 int err;
4093 struct iface_combination_params params = {
4094 .radio_idx = radio_idx,
4095 };
4096
4097 lockdep_assert_wiphy(local->hw.wiphy);
4098
4099 ieee80211_fill_ifcomb_params(local, ¶ms, NULL, NULL);
4100
4101 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4102 ieee80211_iter_max_chans,
4103 &max_num_different_channels);
4104 if (err < 0)
4105 return err;
4106
4107 return max_num_different_channels;
4108 }
4109
4110 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4111 struct ieee80211_sta_s1g_cap *caps,
4112 struct sk_buff *skb)
4113 {
4114 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4115 struct ieee80211_s1g_cap s1g_capab;
4116 u8 *pos;
4117 int i;
4118
4119 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4120 return;
4121
4122 if (!caps->s1g)
4123 return;
4124
4125 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4126 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4127
4128 /* override the capability info */
4129 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4130 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4131
4132 s1g_capab.capab_info[i] &= ~mask;
4133 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4134 }
4135
4136 /* then MCS and NSS set */
4137 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4138 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4139
4140 s1g_capab.supp_mcs_nss[i] &= ~mask;
4141 s1g_capab.supp_mcs_nss[i] |=
4142 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4143 }
4144
4145 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4146 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4147 *pos++ = sizeof(s1g_capab);
4148
4149 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4150 }
4151
4152 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4153 struct sk_buff *skb)
4154 {
4155 u8 *pos = skb_put(skb, 3);
4156
4157 *pos++ = WLAN_EID_AID_REQUEST;
4158 *pos++ = 1;
4159 *pos++ = 0;
4160 }
4161
4162 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4163 {
4164 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4165 *buf++ = 7; /* len */
4166 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4167 *buf++ = 0x50;
4168 *buf++ = 0xf2;
4169 *buf++ = 2; /* WME */
4170 *buf++ = 0; /* WME info */
4171 *buf++ = 1; /* WME ver */
4172 *buf++ = qosinfo; /* U-APSD no in use */
4173
4174 return buf;
4175 }
4176
4177 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4178 unsigned long *frame_cnt,
4179 unsigned long *byte_cnt)
4180 {
4181 struct txq_info *txqi = to_txq_info(txq);
4182 u32 frag_cnt = 0, frag_bytes = 0;
4183 struct sk_buff *skb;
4184
4185 skb_queue_walk(&txqi->frags, skb) {
4186 frag_cnt++;
4187 frag_bytes += skb->len;
4188 }
4189
4190 if (frame_cnt)
4191 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4192
4193 if (byte_cnt)
4194 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4195 }
4196 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4197
4198 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4199 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4200 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4201 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4202 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4203 };
4204
4205 u16 ieee80211_encode_usf(int listen_interval)
4206 {
4207 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4208 u16 ui, usf = 0;
4209
4210 /* find greatest USF */
4211 while (usf < IEEE80211_MAX_USF) {
4212 if (listen_interval % listen_int_usf[usf + 1])
4213 break;
4214 usf += 1;
4215 }
4216 ui = listen_interval / listen_int_usf[usf];
4217
4218 /* error if there is a remainder. Should've been checked by user */
4219 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4220 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4221 FIELD_PREP(LISTEN_INT_UI, ui);
4222
4223 return (u16) listen_interval;
4224 }
4225
4226 /* this may return more than ieee80211_put_eht_cap() will need */
4227 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata)
4228 {
4229 const struct ieee80211_sta_he_cap *he_cap;
4230 const struct ieee80211_sta_eht_cap *eht_cap;
4231 struct ieee80211_supported_band *sband;
4232 bool is_ap;
4233 u8 n;
4234
4235 sband = ieee80211_get_sband(sdata);
4236 if (!sband)
4237 return 0;
4238
4239 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
4240 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif);
4241 if (!he_cap || !eht_cap)
4242 return 0;
4243
4244 is_ap = sdata->vif.type == NL80211_IFTYPE_AP;
4245
4246 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4247 &eht_cap->eht_cap_elem,
4248 is_ap);
4249 return 2 + 1 +
4250 sizeof(eht_cap->eht_cap_elem) + n +
4251 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4252 eht_cap->eht_cap_elem.phy_cap_info);
4253 return 0;
4254 }
4255
4256 int ieee80211_put_eht_cap(struct sk_buff *skb,
4257 struct ieee80211_sub_if_data *sdata,
4258 const struct ieee80211_supported_band *sband,
4259 const struct ieee80211_conn_settings *conn)
4260 {
4261 const struct ieee80211_sta_he_cap *he_cap =
4262 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
4263 const struct ieee80211_sta_eht_cap *eht_cap =
4264 ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif);
4265 bool for_ap = sdata->vif.type == NL80211_IFTYPE_AP;
4266 struct ieee80211_eht_cap_elem_fixed fixed;
4267 struct ieee80211_he_cap_elem he;
4268 u8 mcs_nss_len, ppet_len;
4269 u8 orig_mcs_nss_len;
4270 u8 ie_len;
4271
4272 if (!conn)
4273 conn = &ieee80211_conn_settings_unlimited;
4274
4275 /* Make sure we have place for the IE */
4276 if (!he_cap || !eht_cap)
4277 return 0;
4278
4279 orig_mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4280 &eht_cap->eht_cap_elem,
4281 for_ap);
4282
4283 ieee80211_get_adjusted_he_cap(conn, he_cap, &he);
4284
4285 fixed = eht_cap->eht_cap_elem;
4286
4287 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_80)
4288 fixed.phy_cap_info[6] &=
4289 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_80MHZ;
4290
4291 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) {
4292 fixed.phy_cap_info[1] &=
4293 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK;
4294 fixed.phy_cap_info[2] &=
4295 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK;
4296 fixed.phy_cap_info[6] &=
4297 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_160MHZ;
4298 }
4299
4300 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_320) {
4301 fixed.phy_cap_info[0] &=
4302 ~IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
4303 fixed.phy_cap_info[1] &=
4304 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK;
4305 fixed.phy_cap_info[2] &=
4306 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK;
4307 fixed.phy_cap_info[6] &=
4308 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_320MHZ;
4309 }
4310
4311 if (conn->bw_limit == IEEE80211_CONN_BW_LIMIT_20)
4312 fixed.phy_cap_info[0] &=
4313 ~IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ;
4314
4315 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he, &fixed, for_ap);
4316 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4317 fixed.phy_cap_info);
4318
4319 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
4320 if (skb_tailroom(skb) < ie_len)
4321 return -ENOBUFS;
4322
4323 skb_put_u8(skb, WLAN_EID_EXTENSION);
4324 skb_put_u8(skb, ie_len - 2);
4325 skb_put_u8(skb, WLAN_EID_EXT_EHT_CAPABILITY);
4326 skb_put_data(skb, &fixed, sizeof(fixed));
4327
4328 if (mcs_nss_len == 4 && orig_mcs_nss_len != 4) {
4329 /*
4330 * If the (non-AP) STA became 20 MHz only, then convert from
4331 * <=80 to 20-MHz-only format, where MCSes are indicated in
4332 * the groups 0-7, 8-9, 10-11, 12-13 rather than just 0-9,
4333 * 10-11, 12-13. Thus, use 0-9 for 0-7 and 8-9.
4334 */
4335 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss);
4336 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss);
4337 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss);
4338 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss);
4339 } else {
4340 skb_put_data(skb, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
4341 }
4342
4343 if (ppet_len)
4344 skb_put_data(skb, &eht_cap->eht_ppe_thres, ppet_len);
4345
4346 return 0;
4347 }
4348
4349 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode)
4350 {
4351 static const char * const modes[] = {
4352 [IEEE80211_CONN_MODE_S1G] = "S1G",
4353 [IEEE80211_CONN_MODE_LEGACY] = "legacy",
4354 [IEEE80211_CONN_MODE_HT] = "HT",
4355 [IEEE80211_CONN_MODE_VHT] = "VHT",
4356 [IEEE80211_CONN_MODE_HE] = "HE",
4357 [IEEE80211_CONN_MODE_EHT] = "EHT",
4358 };
4359
4360 if (WARN_ON(mode >= ARRAY_SIZE(modes)))
4361 return "<out of range>";
4362
4363 return modes[mode] ?: "<missing string>";
4364 }
4365
4366 enum ieee80211_conn_bw_limit
4367 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef)
4368 {
4369 switch (chandef->width) {
4370 case NL80211_CHAN_WIDTH_20_NOHT:
4371 case NL80211_CHAN_WIDTH_20:
4372 return IEEE80211_CONN_BW_LIMIT_20;
4373 case NL80211_CHAN_WIDTH_40:
4374 return IEEE80211_CONN_BW_LIMIT_40;
4375 case NL80211_CHAN_WIDTH_80:
4376 return IEEE80211_CONN_BW_LIMIT_80;
4377 case NL80211_CHAN_WIDTH_80P80:
4378 case NL80211_CHAN_WIDTH_160:
4379 return IEEE80211_CONN_BW_LIMIT_160;
4380 case NL80211_CHAN_WIDTH_320:
4381 return IEEE80211_CONN_BW_LIMIT_320;
4382 default:
4383 WARN(1, "unhandled chandef width %d\n", chandef->width);
4384 return IEEE80211_CONN_BW_LIMIT_20;
4385 }
4386 }
4387
4388 void ieee80211_clear_tpe(struct ieee80211_parsed_tpe *tpe)
4389 {
4390 for (int i = 0; i < 2; i++) {
4391 tpe->max_local[i].valid = false;
4392 memset(tpe->max_local[i].power,
4393 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT,
4394 sizeof(tpe->max_local[i].power));
4395
4396 tpe->max_reg_client[i].valid = false;
4397 memset(tpe->max_reg_client[i].power,
4398 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT,
4399 sizeof(tpe->max_reg_client[i].power));
4400
4401 tpe->psd_local[i].valid = false;
4402 memset(tpe->psd_local[i].power,
4403 IEEE80211_TPE_PSD_NO_LIMIT,
4404 sizeof(tpe->psd_local[i].power));
4405
4406 tpe->psd_reg_client[i].valid = false;
4407 memset(tpe->psd_reg_client[i].power,
4408 IEEE80211_TPE_PSD_NO_LIMIT,
4409 sizeof(tpe->psd_reg_client[i].power));
4410 }
4411 }
4412
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