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Merge tag 'platform-drivers-x86-v5.4-2' of git://git.infradead.org/linux-platform...
[linux-2.6-block.git] / net / mac80211 / util.c
CommitLineData
d2912cb1 1// SPDX-License-Identifier: GPL-2.0-only
c2d1560a
JB		 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>
d98ad83e 7 * Copyright 2013-2014 Intel Mobile Communications GmbH
da6a4352 8 * Copyright (C) 2015-2017 Intel Deutschland GmbH
4926b51b 9 * Copyright (C) 2018-2019 Intel Corporation
c2d1560a 10 *
c2d1560a
JB		 11 * utilities for mac80211
12 */
13
14#include <net/mac80211.h>
15#include <linux/netdevice.h>
bc3b2d7f 16#include <linux/export.h>
c2d1560a
JB		 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>
c2d1560a 22#include <linux/bitmap.h>
dd76986b 23#include <linux/crc32.h>
881d966b 24#include <net/net_namespace.h>
c2d1560a 25#include <net/cfg80211.h>
dabeb344 26#include <net/rtnetlink.h>
c2d1560a
JB		 27
28#include "ieee80211_i.h"
24487981 29#include "driver-ops.h"
2c8dccc7 30#include "rate.h"
ee385855 31#include "mesh.h"
c2d1560a 32#include "wme.h"
f2753ddb 33#include "led.h"
fffd0934 34#include "wep.h"
c2d1560a
JB		 35
36/* privid for wiphys to determine whether they belong to us or not */
8a47cea7 37const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
c2d1560a 38
9a95371a
LR		 39struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
40{
41 struct ieee80211_local *local;
42 BUG_ON(!wiphy);
43
44 local = wiphy_priv(wiphy);
45 return &local->hw;
46}
47EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
c2d1560a 48
5cf121c3 49void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
c2d1560a 50{
252b86c4 51 struct sk_buff *skb;
2de8e0d9
JB		 52 struct ieee80211_hdr *hdr;
53
252b86c4 54 skb_queue_walk(&tx->skbs, skb) {
2de8e0d9
JB		 55 hdr = (struct ieee80211_hdr *) skb->data;
56 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
252b86c4 57 }
c2d1560a
JB		 58}
59
57fbcce3 60int ieee80211_frame_duration(enum nl80211_band band, size_t len,
438b61b7
SW		 61 int rate, int erp, int short_preamble,
62 int shift)
c2d1560a
JB		 63{
64 int dur;
65
66 /* calculate duration (in microseconds, rounded up to next higher
67 * integer if it includes a fractional microsecond) to send frame of
68 * len bytes (does not include FCS) at the given rate. Duration will
69 * also include SIFS.
70 *
71 * rate is in 100 kbps, so divident is multiplied by 10 in the
72 * DIV_ROUND_UP() operations.
438b61b7
SW		 73 *
74 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
75 * is assumed to be 0 otherwise.
c2d1560a
JB		 76 */
77
57fbcce3 78 if (band == NL80211_BAND_5GHZ || erp) {
c2d1560a
JB		 79 /*
80 * OFDM:
81 *
82 * N_DBPS = DATARATE x 4
83 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
84 * (16 = SIGNAL time, 6 = tail bits)
85 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
86 *
87 * T_SYM = 4 usec
438b61b7 88 * 802.11a - 18.5.2: aSIFSTime = 16 usec
c2d1560a
JB		 89 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
90 * signal ext = 6 usec
91 */
c2d1560a 92 dur = 16; /* SIFS + signal ext */
438b61b7
SW		 93 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
94 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
438b61b7
SW		 95
96 /* IEEE 802.11-2012 18.3.2.4: all values above are:
97 * * times 4 for 5 MHz
98 * * times 2 for 10 MHz
99 */
100 dur *= 1 << shift;
2103dec1
SW		 101
102 /* rates should already consider the channel bandwidth,
103 * don't apply divisor again.
104 */
105 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
106 4 * rate); /* T_SYM x N_SYM */
c2d1560a
JB		 107 } else {
108 /*
109 * 802.11b or 802.11g with 802.11b compatibility:
110 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
111 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
112 *
113 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
114 * aSIFSTime = 10 usec
115 * aPreambleLength = 144 usec or 72 usec with short preamble
116 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
117 */
118 dur = 10; /* aSIFSTime = 10 usec */
119 dur += short_preamble ? (72 + 24) : (144 + 48);
120
121 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
122 }
123
124 return dur;
125}
126
127/* Exported duration function for driver use */
32bfd35d
JB		 128__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
129 struct ieee80211_vif *vif,
57fbcce3 130 enum nl80211_band band,
8318d78a
JB		 131 size_t frame_len,
132 struct ieee80211_rate *rate)
c2d1560a 133{
25d834e1 134 struct ieee80211_sub_if_data *sdata;
c2d1560a 135 u16 dur;
438b61b7 136 int erp, shift = 0;
25d834e1 137 bool short_preamble = false;
c2d1560a 138
8318d78a 139 erp = 0;
25d834e1
JB		 140 if (vif) {
141 sdata = vif_to_sdata(vif);
bda3933a 142 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 143 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
144 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 145 shift = ieee80211_vif_get_shift(vif);
25d834e1 146 }
8318d78a 147
4ee73f33 148 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
438b61b7 149 short_preamble, shift);
c2d1560a
JB		 150
151 return cpu_to_le16(dur);
152}
153EXPORT_SYMBOL(ieee80211_generic_frame_duration);
154
32bfd35d
JB		 155__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
156 struct ieee80211_vif *vif, size_t frame_len,
e039fa4a 157 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 158{
159 struct ieee80211_local *local = hw_to_local(hw);
160 struct ieee80211_rate *rate;
25d834e1 161 struct ieee80211_sub_if_data *sdata;
471b3efd 162 bool short_preamble;
2103dec1 163 int erp, shift = 0, bitrate;
c2d1560a 164 u16 dur;
2e92e6f2
JB		 165 struct ieee80211_supported_band *sband;
166
4ee73f33 167 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 168
25d834e1 169 short_preamble = false;
7e9ed188 170
e039fa4a 171 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a
JB		 172
173 erp = 0;
25d834e1
JB		 174 if (vif) {
175 sdata = vif_to_sdata(vif);
bda3933a 176 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 177 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
178 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 179 shift = ieee80211_vif_get_shift(vif);
25d834e1 180 }
c2d1560a 181
2103dec1
SW		 182 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
183
c2d1560a 184 /* CTS duration */
2103dec1 185 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 186 erp, short_preamble, shift);
c2d1560a 187 /* Data frame duration */
2103dec1 188 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 189 erp, short_preamble, shift);
c2d1560a 190 /* ACK duration */
2103dec1 191 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 192 erp, short_preamble, shift);
c2d1560a
JB		 193
194 return cpu_to_le16(dur);
195}
196EXPORT_SYMBOL(ieee80211_rts_duration);
197
32bfd35d
JB		 198__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
199 struct ieee80211_vif *vif,
c2d1560a 200 size_t frame_len,
e039fa4a 201 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 202{
203 struct ieee80211_local *local = hw_to_local(hw);
204 struct ieee80211_rate *rate;
25d834e1 205 struct ieee80211_sub_if_data *sdata;
471b3efd 206 bool short_preamble;
2103dec1 207 int erp, shift = 0, bitrate;
c2d1560a 208 u16 dur;
2e92e6f2
JB		 209 struct ieee80211_supported_band *sband;
210
4ee73f33 211 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 212
25d834e1 213 short_preamble = false;
7e9ed188 214
e039fa4a 215 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a 216 erp = 0;
25d834e1
JB		 217 if (vif) {
218 sdata = vif_to_sdata(vif);
bda3933a 219 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 220 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
221 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 222 shift = ieee80211_vif_get_shift(vif);
25d834e1 223 }
c2d1560a 224
2103dec1
SW		 225 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
226
c2d1560a 227 /* Data frame duration */
2103dec1 228 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 229 erp, short_preamble, shift);
e039fa4a 230 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
c2d1560a 231 /* ACK duration */
2103dec1 232 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 233 erp, short_preamble, shift);
c2d1560a
JB		 234 }
235
236 return cpu_to_le16(dur);
237}
238EXPORT_SYMBOL(ieee80211_ctstoself_duration);
239
21a5d4c3
MP		 240static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
241{
242 struct ieee80211_local *local = sdata->local;
243 struct ieee80211_vif *vif = &sdata->vif;
244 struct fq *fq = &local->fq;
245 struct ps_data *ps = NULL;
246 struct txq_info *txqi;
247 struct sta_info *sta;
248 int i;
249
250 spin_lock_bh(&fq->lock);
251
252 if (sdata->vif.type == NL80211_IFTYPE_AP)
253 ps = &sdata->bss->ps;
254
255 sdata->vif.txqs_stopped[ac] = false;
256
257 list_for_each_entry_rcu(sta, &local->sta_list, list) {
258 if (sdata != sta->sdata)
259 continue;
260
261 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
262 struct ieee80211_txq *txq = sta->sta.txq[i];
263
a5ae3264
ES		 264 if (!txq)
265 continue;
266
21a5d4c3
MP		 267 txqi = to_txq_info(txq);
268
269 if (ac != txq->ac)
270 continue;
271
272 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
273 &txqi->flags))
274 continue;
275
276 spin_unlock_bh(&fq->lock);
277 drv_wake_tx_queue(local, txqi);
278 spin_lock_bh(&fq->lock);
279 }
280 }
281
282 if (!vif->txq)
283 goto out;
284
285 txqi = to_txq_info(vif->txq);
286
287 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
288 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
289 goto out;
290
291 spin_unlock_bh(&fq->lock);
292
293 drv_wake_tx_queue(local, txqi);
294 return;
295out:
296 spin_unlock_bh(&fq->lock);
297}
298
f6c7f03f
EG		 299static void
300__releases(&local->queue_stop_reason_lock)
301__acquires(&local->queue_stop_reason_lock)
302_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
21a5d4c3 303{
21a5d4c3
MP		 304 struct ieee80211_sub_if_data *sdata;
305 int n_acs = IEEE80211_NUM_ACS;
21a5d4c3
MP		 306 int i;
307
308 rcu_read_lock();
21a5d4c3
MP		 309
310 if (local->hw.queues < IEEE80211_NUM_ACS)
311 n_acs = 1;
312
313 for (i = 0; i < local->hw.queues; i++) {
314 if (local->queue_stop_reasons[i])
315 continue;
316
f6c7f03f 317 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
21a5d4c3
MP		 318 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
319 int ac;
320
321 for (ac = 0; ac < n_acs; ac++) {
322 int ac_queue = sdata->vif.hw_queue[ac];
323
324 if (ac_queue == i ||
325 sdata->vif.cab_queue == i)
326 __ieee80211_wake_txqs(sdata, ac);
327 }
328 }
f6c7f03f 329 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
21a5d4c3
MP		 330 }
331
21a5d4c3
MP		 332 rcu_read_unlock();
333}
334
f6c7f03f
EG		 335void ieee80211_wake_txqs(unsigned long data)
336{
337 struct ieee80211_local *local = (struct ieee80211_local *)data;
338 unsigned long flags;
339
340 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
341 _ieee80211_wake_txqs(local, &flags);
342 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
343}
344
3a25a8c8
JB		 345void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
346{
347 struct ieee80211_sub_if_data *sdata;
a6f38ac3
JB		 348 int n_acs = IEEE80211_NUM_ACS;
349
80a83cfc
MK		 350 if (local->ops->wake_tx_queue)
351 return;
352
a6f38ac3
JB		 353 if (local->hw.queues < IEEE80211_NUM_ACS)
354 n_acs = 1;
3a25a8c8
JB		 355
356 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
357 int ac;
358
f142c6b9
JB		 359 if (!sdata->dev)
360 continue;
361
3a25a8c8
JB		 362 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
363 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
364 continue;
365
a6f38ac3 366 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 367 int ac_queue = sdata->vif.hw_queue[ac];
368
369 if (ac_queue == queue ||
370 (sdata->vif.cab_queue == queue &&
371 local->queue_stop_reasons[ac_queue] == 0 &&
372 skb_queue_empty(&local->pending[ac_queue])))
373 netif_wake_subqueue(sdata->dev, ac);
374 }
375 }
376}
377
ce7c9111 378static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
cca07b00 379 enum queue_stop_reason reason,
f6c7f03f
EG		 380 bool refcounted,
381 unsigned long *flags)
c2d1560a
JB		 382{
383 struct ieee80211_local *local = hw_to_local(hw);
384
b5878a2d
JB		 385 trace_wake_queue(local, queue, reason);
386
e4e72fb4
JB		 387 if (WARN_ON(queue >= hw->queues))
388 return;
ce7c9111 389
ada15125
JB		 390 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
391 return;
392
856142cd 393 if (!refcounted) {
cca07b00 394 local->q_stop_reasons[queue][reason] = 0;
856142cd 395 } else {
cca07b00 396 local->q_stop_reasons[queue][reason]--;
856142cd
JB		 397 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
398 local->q_stop_reasons[queue][reason] = 0;
399 }
cca07b00
LC		 400
401 if (local->q_stop_reasons[queue][reason] == 0)
402 __clear_bit(reason, &local->queue_stop_reasons[queue]);
96f5e66e
JB		 403
404 if (local->queue_stop_reasons[queue] != 0)
405 /* someone still has this queue stopped */
406 return;
407
7236fe29
JB		 408 if (skb_queue_empty(&local->pending[queue])) {
409 rcu_read_lock();
3a25a8c8 410 ieee80211_propagate_queue_wake(local, queue);
7236fe29
JB		 411 rcu_read_unlock();
412 } else
3b8d81e0 413 tasklet_schedule(&local->tx_pending_tasklet);
21a5d4c3 414
f6c7f03f
EG		 415 /*
416 * Calling _ieee80211_wake_txqs here can be a problem because it may
417 * release queue_stop_reason_lock which has been taken by
418 * __ieee80211_wake_queue's caller. It is certainly not very nice to
419 * release someone's lock, but it is fine because all the callers of
420 * __ieee80211_wake_queue call it right before releasing the lock.
421 */
422 if (local->ops->wake_tx_queue) {
423 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
424 tasklet_schedule(&local->wake_txqs_tasklet);
425 else
426 _ieee80211_wake_txqs(local, flags);
427 }
c2d1560a 428}
ce7c9111 429
96f5e66e 430void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 431 enum queue_stop_reason reason,
432 bool refcounted)
ce7c9111
KV		 433{
434 struct ieee80211_local *local = hw_to_local(hw);
435 unsigned long flags;
436
437 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
f6c7f03f 438 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
ce7c9111
KV		 439 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
440}
441
442void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
443{
444 ieee80211_wake_queue_by_reason(hw, queue,
cca07b00
LC		 445 IEEE80211_QUEUE_STOP_REASON_DRIVER,
446 false);
ce7c9111 447}
c2d1560a
JB		 448EXPORT_SYMBOL(ieee80211_wake_queue);
449
ce7c9111 450static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 451 enum queue_stop_reason reason,
452 bool refcounted)
c2d1560a
JB		 453{
454 struct ieee80211_local *local = hw_to_local(hw);
cf0277e7 455 struct ieee80211_sub_if_data *sdata;
a6f38ac3 456 int n_acs = IEEE80211_NUM_ACS;
c2d1560a 457
b5878a2d
JB		 458 trace_stop_queue(local, queue, reason);
459
e4e72fb4
JB		 460 if (WARN_ON(queue >= hw->queues))
461 return;
96f5e66e 462
cca07b00
LC		 463 if (!refcounted)
464 local->q_stop_reasons[queue][reason] = 1;
465 else
466 local->q_stop_reasons[queue][reason]++;
ada15125 467
cca07b00
LC		 468 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
469 return;
cf0277e7 470
a6f38ac3
JB		 471 if (local->hw.queues < IEEE80211_NUM_ACS)
472 n_acs = 1;
473
cf0277e7 474 rcu_read_lock();
3a25a8c8
JB		 475 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
476 int ac;
477
f142c6b9
JB		 478 if (!sdata->dev)
479 continue;
480
a6f38ac3 481 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8 482 if (sdata->vif.hw_queue[ac] == queue ||
21a5d4c3
MP		 483 sdata->vif.cab_queue == queue) {
484 if (!local->ops->wake_tx_queue) {
485 netif_stop_subqueue(sdata->dev, ac);
486 continue;
487 }
488 spin_lock(&local->fq.lock);
489 sdata->vif.txqs_stopped[ac] = true;
490 spin_unlock(&local->fq.lock);
491 }
3a25a8c8
JB		 492 }
493 }
cf0277e7 494 rcu_read_unlock();
c2d1560a 495}
ce7c9111 496
96f5e66e 497void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 498 enum queue_stop_reason reason,
499 bool refcounted)
ce7c9111
KV		 500{
501 struct ieee80211_local *local = hw_to_local(hw);
502 unsigned long flags;
503
504 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 505 __ieee80211_stop_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 506 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
507}
508
509void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
510{
511 ieee80211_stop_queue_by_reason(hw, queue,
cca07b00
LC		 512 IEEE80211_QUEUE_STOP_REASON_DRIVER,
513 false);
ce7c9111 514}
c2d1560a
JB		 515EXPORT_SYMBOL(ieee80211_stop_queue);
516
8f77f384
JB		 517void ieee80211_add_pending_skb(struct ieee80211_local *local,
518 struct sk_buff *skb)
519{
520 struct ieee80211_hw *hw = &local->hw;
521 unsigned long flags;
a7bc376c 522 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
3a25a8c8 523 int queue = info->hw_queue;
a7bc376c
JB		 524
525 if (WARN_ON(!info->control.vif)) {
d4fa14cd 526 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 527 return;
528 }
8f77f384
JB		 529
530 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00
LC		 531 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
532 false);
3b8d81e0 533 __skb_queue_tail(&local->pending[queue], skb);
cca07b00 534 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
f6c7f03f 535 false, &flags);
8f77f384
JB		 536 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
537}
538
e3685e03
JB		 539void ieee80211_add_pending_skbs(struct ieee80211_local *local,
540 struct sk_buff_head *skbs)
8f77f384
JB		 541{
542 struct ieee80211_hw *hw = &local->hw;
543 struct sk_buff *skb;
544 unsigned long flags;
b0b97a8a 545 int queue, i;
8f77f384
JB		 546
547 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
8f77f384 548 while ((skb = skb_dequeue(skbs))) {
a7bc376c
JB		 549 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
550
551 if (WARN_ON(!info->control.vif)) {
d4fa14cd 552 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 553 continue;
554 }
555
3a25a8c8 556 queue = info->hw_queue;
4644ae89
JB		 557
558 __ieee80211_stop_queue(hw, queue,
cca07b00
LC		 559 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
560 false);
4644ae89 561
3b8d81e0 562 __skb_queue_tail(&local->pending[queue], skb);
8f77f384
JB		 563 }
564
3b8d81e0 565 for (i = 0; i < hw->queues; i++)
8f77f384 566 __ieee80211_wake_queue(hw, i,
cca07b00 567 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
f6c7f03f 568 false, &flags);
8f77f384 569 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
8f77f384
JB		 570}
571
ce7c9111 572void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 573 unsigned long queues,
cca07b00
LC		 574 enum queue_stop_reason reason,
575 bool refcounted)
c2d1560a 576{
ce7c9111
KV		 577 struct ieee80211_local *local = hw_to_local(hw);
578 unsigned long flags;
c2d1560a
JB		 579 int i;
580
ce7c9111
KV		 581 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
582
445ea4e8 583 for_each_set_bit(i, &queues, hw->queues)
cca07b00 584 __ieee80211_stop_queue(hw, i, reason, refcounted);
ce7c9111
KV		 585
586 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
587}
588
589void ieee80211_stop_queues(struct ieee80211_hw *hw)
590{
445ea4e8 591 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 592 IEEE80211_QUEUE_STOP_REASON_DRIVER,
593 false);
c2d1560a
JB		 594}
595EXPORT_SYMBOL(ieee80211_stop_queues);
596
92ab8535
TW		 597int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
598{
599 struct ieee80211_local *local = hw_to_local(hw);
3b8d81e0
JB		 600 unsigned long flags;
601 int ret;
96f5e66e 602
e4e72fb4
JB		 603 if (WARN_ON(queue >= hw->queues))
604 return true;
96f5e66e 605
3b8d81e0 606 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
2419ea14
TP		 607 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
608 &local->queue_stop_reasons[queue]);
3b8d81e0
JB		 609 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
610 return ret;
92ab8535
TW		 611}
612EXPORT_SYMBOL(ieee80211_queue_stopped);
613
ce7c9111 614void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 615 unsigned long queues,
cca07b00
LC		 616 enum queue_stop_reason reason,
617 bool refcounted)
c2d1560a 618{
ce7c9111
KV		 619 struct ieee80211_local *local = hw_to_local(hw);
620 unsigned long flags;
c2d1560a
JB		 621 int i;
622
ce7c9111
KV		 623 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
624
445ea4e8 625 for_each_set_bit(i, &queues, hw->queues)
f6c7f03f 626 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
ce7c9111
KV		 627
628 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
629}
630
631void ieee80211_wake_queues(struct ieee80211_hw *hw)
632{
445ea4e8 633 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 634 IEEE80211_QUEUE_STOP_REASON_DRIVER,
635 false);
c2d1560a
JB		 636}
637EXPORT_SYMBOL(ieee80211_wake_queues);
dabeb344 638
26da23b6
LC		 639static unsigned int
640ieee80211_get_vif_queues(struct ieee80211_local *local,
641 struct ieee80211_sub_if_data *sdata)
39ecc01d 642{
26da23b6 643 unsigned int queues;
39ecc01d 644
30686bf7 645 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
39ecc01d
JB		 646 int ac;
647
648 queues = 0;
649
650 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
651 queues |= BIT(sdata->vif.hw_queue[ac]);
652 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
653 queues |= BIT(sdata->vif.cab_queue);
654 } else {
655 /* all queues */
656 queues = BIT(local->hw.queues) - 1;
657 }
658
26da23b6
LC		 659 return queues;
660}
661
4f9610d5
LK		 662void __ieee80211_flush_queues(struct ieee80211_local *local,
663 struct ieee80211_sub_if_data *sdata,
3b24f4c6 664 unsigned int queues, bool drop)
26da23b6 665{
26da23b6
LC		 666 if (!local->ops->flush)
667 return;
668
4f9610d5
LK		 669 /*
670 * If no queue was set, or if the HW doesn't support
671 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
672 */
30686bf7 673 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
4f9610d5 674 queues = ieee80211_get_vif_queues(local, sdata);
26da23b6 675
59f48fe2 676 ieee80211_stop_queues_by_reason(&local->hw, queues,
cca07b00
LC		 677 IEEE80211_QUEUE_STOP_REASON_FLUSH,
678 false);
445ea4e8 679
3b24f4c6 680 drv_flush(local, sdata, queues, drop);
445ea4e8 681
59f48fe2 682 ieee80211_wake_queues_by_reason(&local->hw, queues,
cca07b00
LC		 683 IEEE80211_QUEUE_STOP_REASON_FLUSH,
684 false);
39ecc01d
JB		 685}
686
4f9610d5 687void ieee80211_flush_queues(struct ieee80211_local *local,
3b24f4c6 688 struct ieee80211_sub_if_data *sdata, bool drop)
4f9610d5 689{
3b24f4c6 690 __ieee80211_flush_queues(local, sdata, 0, drop);
4f9610d5
LK		 691}
692
26da23b6
LC		 693void ieee80211_stop_vif_queues(struct ieee80211_local *local,
694 struct ieee80211_sub_if_data *sdata,
695 enum queue_stop_reason reason)
696{
697 ieee80211_stop_queues_by_reason(&local->hw,
698 ieee80211_get_vif_queues(local, sdata),
699 reason, true);
700}
701
702void ieee80211_wake_vif_queues(struct ieee80211_local *local,
703 struct ieee80211_sub_if_data *sdata,
704 enum queue_stop_reason reason)
705{
706 ieee80211_wake_queues_by_reason(&local->hw,
707 ieee80211_get_vif_queues(local, sdata),
708 reason, true);
709}
710
3384d757
AN		 711static void __iterate_interfaces(struct ieee80211_local *local,
712 u32 iter_flags,
713 void (*iterator)(void *data, u8 *mac,
714 struct ieee80211_vif *vif),
715 void *data)
dabeb344 716{
dabeb344 717 struct ieee80211_sub_if_data *sdata;
3384d757 718 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
dabeb344 719
c7c71066 720 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
2f561feb 721 switch (sdata->vif.type) {
05c914fe 722 case NL80211_IFTYPE_MONITOR:
d8212184 723 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
31eba5bc
FF		 724 continue;
725 break;
05c914fe 726 case NL80211_IFTYPE_AP_VLAN:
2f561feb 727 continue;
2ca27bcf 728 default:
2f561feb
ID		 729 break;
730 }
8b2c9824 731 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
3384d757 732 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
8b2c9824 733 continue;
3384d757 734 if (ieee80211_sdata_running(sdata) || !active_only)
47846c9b 735 iterator(data, sdata->vif.addr,
2f561feb
ID		 736 &sdata->vif);
737 }
738
c7c71066
JB		 739 sdata = rcu_dereference_check(local->monitor_sdata,
740 lockdep_is_held(&local->iflist_mtx) ||
741 lockdep_rtnl_is_held());
8b2c9824 742 if (sdata &&
3384d757 743 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
8b2c9824 744 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
685fb72b 745 iterator(data, sdata->vif.addr, &sdata->vif);
c7c71066 746}
685fb72b 747
3384d757 748void ieee80211_iterate_interfaces(
c7c71066
JB		 749 struct ieee80211_hw *hw, u32 iter_flags,
750 void (*iterator)(void *data, u8 *mac,
751 struct ieee80211_vif *vif),
752 void *data)
753{
754 struct ieee80211_local *local = hw_to_local(hw);
755
756 mutex_lock(&local->iflist_mtx);
3384d757 757 __iterate_interfaces(local, iter_flags, iterator, data);
c771c9d8 758 mutex_unlock(&local->iflist_mtx);
2f561feb 759}
3384d757 760EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
2f561feb
ID		 761
762void ieee80211_iterate_active_interfaces_atomic(
8b2c9824 763 struct ieee80211_hw *hw, u32 iter_flags,
2f561feb
ID		 764 void (*iterator)(void *data, u8 *mac,
765 struct ieee80211_vif *vif),
766 void *data)
767{
768 struct ieee80211_local *local = hw_to_local(hw);
2f561feb 769
e38bad47 770 rcu_read_lock();
3384d757
AN		 771 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
772 iterator, data);
c7c71066
JB		 773 rcu_read_unlock();
774}
775EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
dabeb344 776
c7c71066
JB		 777void ieee80211_iterate_active_interfaces_rtnl(
778 struct ieee80211_hw *hw, u32 iter_flags,
779 void (*iterator)(void *data, u8 *mac,
780 struct ieee80211_vif *vif),
781 void *data)
782{
783 struct ieee80211_local *local = hw_to_local(hw);
e38bad47 784
c7c71066 785 ASSERT_RTNL();
685fb72b 786
3384d757
AN		 787 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
788 iterator, data);
dabeb344 789}
c7c71066 790EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
37ffc8da 791
0fc1e049
AN		 792static void __iterate_stations(struct ieee80211_local *local,
793 void (*iterator)(void *data,
794 struct ieee80211_sta *sta),
795 void *data)
796{
797 struct sta_info *sta;
798
799 list_for_each_entry_rcu(sta, &local->sta_list, list) {
800 if (!sta->uploaded)
801 continue;
802
803 iterator(data, &sta->sta);
804 }
805}
806
807void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
808 void (*iterator)(void *data,
809 struct ieee80211_sta *sta),
810 void *data)
811{
812 struct ieee80211_local *local = hw_to_local(hw);
813
814 rcu_read_lock();
815 __iterate_stations(local, iterator, data);
816 rcu_read_unlock();
817}
818EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
819
ad7e718c
JB		 820struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
821{
822 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
823
824 if (!ieee80211_sdata_running(sdata) ||
825 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
826 return NULL;
827 return &sdata->vif;
828}
829EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
830
dc5a1ad7
EG		 831struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
832{
6513e98e
JB		 833 struct ieee80211_sub_if_data *sdata;
834
835 if (!vif)
836 return NULL;
837
838 sdata = vif_to_sdata(vif);
dc5a1ad7
EG		 839
840 if (!ieee80211_sdata_running(sdata) ||
841 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
842 return NULL;
843
844 return &sdata->wdev;
845}
846EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
847
42935eca
LR		 848/*
849 * Nothing should have been stuffed into the workqueue during
4afaff17
EG		 850 * the suspend->resume cycle. Since we can't check each caller
851 * of this function if we are already quiescing / suspended,
852 * check here and don't WARN since this can actually happen when
853 * the rx path (for example) is racing against __ieee80211_suspend
854 * and suspending / quiescing was set after the rx path checked
855 * them.
42935eca
LR		 856 */
857static bool ieee80211_can_queue_work(struct ieee80211_local *local)
858{
4afaff17
EG		 859 if (local->quiescing || (local->suspended && !local->resuming)) {
860 pr_warn("queueing ieee80211 work while going to suspend\n");
ceb99fe0 861 return false;
4afaff17 862 }
42935eca
LR		 863
864 return true;
865}
866
867void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
868{
869 struct ieee80211_local *local = hw_to_local(hw);
870
871 if (!ieee80211_can_queue_work(local))
872 return;
873
874 queue_work(local->workqueue, work);
875}
876EXPORT_SYMBOL(ieee80211_queue_work);
877
878void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
879 struct delayed_work *dwork,
880 unsigned long delay)
881{
882 struct ieee80211_local *local = hw_to_local(hw);
883
884 if (!ieee80211_can_queue_work(local))
885 return;
886
887 queue_delayed_work(local->workqueue, dwork, delay);
888}
889EXPORT_SYMBOL(ieee80211_queue_delayed_work);
890
78ac51f8
SS		 891static u32
892_ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
893 struct ieee802_11_elems *elems,
671042a4
SS		 894 u64 filter, u32 crc,
895 const struct element *check_inherit)
dd76986b 896{
671042a4 897 const struct element *elem;
dd76986b 898 bool calc_crc = filter != 0;
fcff4f10 899 DECLARE_BITMAP(seen_elems, 256);
b2e506bf 900 const u8 *ie;
dd76986b 901
fcff4f10 902 bitmap_zero(seen_elems, 256);
dd76986b 903
c17e28d1 904 for_each_element(elem, start, len) {
fcff4f10 905 bool elem_parse_failed;
c17e28d1
JB		 906 u8 id = elem->id;
907 u8 elen = elem->datalen;
908 const u8 *pos = elem->data;
fcff4f10 909
671042a4
SS		 910 if (check_inherit &&
911 !cfg80211_is_element_inherited(elem,
912 check_inherit))
913 continue;
914
9690fb16
JB		 915 switch (id) {
916 case WLAN_EID_SSID:
917 case WLAN_EID_SUPP_RATES:
918 case WLAN_EID_FH_PARAMS:
919 case WLAN_EID_DS_PARAMS:
920 case WLAN_EID_CF_PARAMS:
921 case WLAN_EID_TIM:
922 case WLAN_EID_IBSS_PARAMS:
923 case WLAN_EID_CHALLENGE:
924 case WLAN_EID_RSN:
925 case WLAN_EID_ERP_INFO:
926 case WLAN_EID_EXT_SUPP_RATES:
927 case WLAN_EID_HT_CAPABILITY:
928 case WLAN_EID_HT_OPERATION:
929 case WLAN_EID_VHT_CAPABILITY:
930 case WLAN_EID_VHT_OPERATION:
931 case WLAN_EID_MESH_ID:
932 case WLAN_EID_MESH_CONFIG:
933 case WLAN_EID_PEER_MGMT:
934 case WLAN_EID_PREQ:
935 case WLAN_EID_PREP:
936 case WLAN_EID_PERR:
937 case WLAN_EID_RANN:
938 case WLAN_EID_CHANNEL_SWITCH:
939 case WLAN_EID_EXT_CHANSWITCH_ANN:
940 case WLAN_EID_COUNTRY:
941 case WLAN_EID_PWR_CONSTRAINT:
942 case WLAN_EID_TIMEOUT_INTERVAL:
85220d71 943 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
b2e506bf 944 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
8f2535b9 945 case WLAN_EID_CHAN_SWITCH_PARAM:
9041c1fa 946 case WLAN_EID_EXT_CAPABILITY:
53837584
AN		 947 case WLAN_EID_CHAN_SWITCH_TIMING:
948 case WLAN_EID_LINK_ID:
e38a017b 949 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
b2e506bf
JB		 950 /*
951 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
952 * that if the content gets bigger it might be needed more than once
953 */
9690fb16
JB		 954 if (test_bit(id, seen_elems)) {
955 elems->parse_error = true;
9690fb16
JB		 956 continue;
957 }
958 break;
fcff4f10 959 }
dd76986b
JB		 960
961 if (calc_crc && id < 64 && (filter & (1ULL << id)))
962 crc = crc32_be(crc, pos - 2, elen + 2);
963
fcff4f10
PS		 964 elem_parse_failed = false;
965
dd76986b 966 switch (id) {
53837584
AN		 967 case WLAN_EID_LINK_ID:
968 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
969 elem_parse_failed = true;
970 break;
971 }
972 elems->lnk_id = (void *)(pos - 2);
973 break;
974 case WLAN_EID_CHAN_SWITCH_TIMING:
975 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
976 elem_parse_failed = true;
977 break;
978 }
979 elems->ch_sw_timing = (void *)pos;
980 break;
9041c1fa
AN		 981 case WLAN_EID_EXT_CAPABILITY:
982 elems->ext_capab = pos;
983 elems->ext_capab_len = elen;
984 break;
dd76986b
JB		 985 case WLAN_EID_SSID:
986 elems->ssid = pos;
987 elems->ssid_len = elen;
988 break;
989 case WLAN_EID_SUPP_RATES:
990 elems->supp_rates = pos;
991 elems->supp_rates_len = elen;
992 break;
dd76986b 993 case WLAN_EID_DS_PARAMS:
1cd8e88e
JB		 994 if (elen >= 1)
995 elems->ds_params = pos;
996 else
997 elem_parse_failed = true;
dd76986b 998 break;
dd76986b
JB		 999 case WLAN_EID_TIM:
1000 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1001 elems->tim = (void *)pos;
1002 elems->tim_len = elen;
fcff4f10
PS		 1003 } else
1004 elem_parse_failed = true;
dd76986b 1005 break;
dd76986b
JB		 1006 case WLAN_EID_CHALLENGE:
1007 elems->challenge = pos;
1008 elems->challenge_len = elen;
1009 break;
1010 case WLAN_EID_VENDOR_SPECIFIC:
1011 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1012 pos[2] == 0xf2) {
1013 /* Microsoft OUI (00:50:F2) */
1014
1015 if (calc_crc)
1016 crc = crc32_be(crc, pos - 2, elen + 2);
1017
441a33ba 1018 if (elen >= 5 && pos[3] == 2) {
dd76986b
JB		 1019 /* OUI Type 2 - WMM IE */
1020 if (pos[4] == 0) {
1021 elems->wmm_info = pos;
1022 elems->wmm_info_len = elen;
1023 } else if (pos[4] == 1) {
1024 elems->wmm_param = pos;
1025 elems->wmm_param_len = elen;
1026 }
1027 }
1028 }
1029 break;
1030 case WLAN_EID_RSN:
1031 elems->rsn = pos;
1032 elems->rsn_len = elen;
1033 break;
1034 case WLAN_EID_ERP_INFO:
1946bed9
JB		 1035 if (elen >= 1)
1036 elems->erp_info = pos;
1037 else
1038 elem_parse_failed = true;
dd76986b
JB		 1039 break;
1040 case WLAN_EID_EXT_SUPP_RATES:
1041 elems->ext_supp_rates = pos;
1042 elems->ext_supp_rates_len = elen;
1043 break;
1044 case WLAN_EID_HT_CAPABILITY:
1045 if (elen >= sizeof(struct ieee80211_ht_cap))
1046 elems->ht_cap_elem = (void *)pos;
fcff4f10
PS		 1047 else
1048 elem_parse_failed = true;
dd76986b 1049 break;
074d46d1
JB		 1050 case WLAN_EID_HT_OPERATION:
1051 if (elen >= sizeof(struct ieee80211_ht_operation))
1052 elems->ht_operation = (void *)pos;
fcff4f10
PS		 1053 else
1054 elem_parse_failed = true;
dd76986b 1055 break;
818255ea
MP		 1056 case WLAN_EID_VHT_CAPABILITY:
1057 if (elen >= sizeof(struct ieee80211_vht_cap))
1058 elems->vht_cap_elem = (void *)pos;
1059 else
1060 elem_parse_failed = true;
1061 break;
1062 case WLAN_EID_VHT_OPERATION:
1063 if (elen >= sizeof(struct ieee80211_vht_operation))
1064 elems->vht_operation = (void *)pos;
1065 else
1066 elem_parse_failed = true;
1067 break;
bee7f586
JB		 1068 case WLAN_EID_OPMODE_NOTIF:
1069 if (elen > 0)
1070 elems->opmode_notif = pos;
1071 else
1072 elem_parse_failed = true;
1073 break;
dd76986b
JB		 1074 case WLAN_EID_MESH_ID:
1075 elems->mesh_id = pos;
1076 elems->mesh_id_len = elen;
1077 break;
1078 case WLAN_EID_MESH_CONFIG:
1079 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1080 elems->mesh_config = (void *)pos;
fcff4f10
PS		 1081 else
1082 elem_parse_failed = true;
dd76986b
JB		 1083 break;
1084 case WLAN_EID_PEER_MGMT:
1085 elems->peering = pos;
1086 elems->peering_len = elen;
1087 break;
3f52b7e3
MP		 1088 case WLAN_EID_MESH_AWAKE_WINDOW:
1089 if (elen >= 2)
1090 elems->awake_window = (void *)pos;
1091 break;
dd76986b
JB		 1092 case WLAN_EID_PREQ:
1093 elems->preq = pos;
1094 elems->preq_len = elen;
1095 break;
1096 case WLAN_EID_PREP:
1097 elems->prep = pos;
1098 elems->prep_len = elen;
1099 break;
1100 case WLAN_EID_PERR:
1101 elems->perr = pos;
1102 elems->perr_len = elen;
1103 break;
1104 case WLAN_EID_RANN:
1105 if (elen >= sizeof(struct ieee80211_rann_ie))
1106 elems->rann = (void *)pos;
fcff4f10
PS		 1107 else
1108 elem_parse_failed = true;
dd76986b
JB		 1109 break;
1110 case WLAN_EID_CHANNEL_SWITCH:
5bc1420b
JB		 1111 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1112 elem_parse_failed = true;
1113 break;
1114 }
1115 elems->ch_switch_ie = (void *)pos;
dd76986b 1116 break;
b4f286a1
JB		 1117 case WLAN_EID_EXT_CHANSWITCH_ANN:
1118 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1119 elem_parse_failed = true;
1120 break;
1121 }
1122 elems->ext_chansw_ie = (void *)pos;
1123 break;
85220d71
JB		 1124 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1125 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1126 elem_parse_failed = true;
1127 break;
1128 }
1129 elems->sec_chan_offs = (void *)pos;
1130 break;
8f2535b9
CYY		 1131 case WLAN_EID_CHAN_SWITCH_PARAM:
1132 if (elen !=
1133 sizeof(*elems->mesh_chansw_params_ie)) {
1134 elem_parse_failed = true;
1135 break;
1136 }
1137 elems->mesh_chansw_params_ie = (void *)pos;
1138 break;
b2e506bf
JB		 1139 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1140 if (!action ||
1141 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1142 elem_parse_failed = true;
1143 break;
1144 }
1145 elems->wide_bw_chansw_ie = (void *)pos;
1146 break;
1147 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1148 if (action) {
1149 elem_parse_failed = true;
1150 break;
1151 }
1152 /*
1153 * This is a bit tricky, but as we only care about
1154 * the wide bandwidth channel switch element, so
1155 * just parse it out manually.
1156 */
1157 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1158 pos, elen);
1159 if (ie) {
1160 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1161 elems->wide_bw_chansw_ie =
1162 (void *)(ie + 2);
1163 else
1164 elem_parse_failed = true;
1165 }
1166 break;
dd76986b
JB		 1167 case WLAN_EID_COUNTRY:
1168 elems->country_elem = pos;
1169 elems->country_elem_len = elen;
1170 break;
1171 case WLAN_EID_PWR_CONSTRAINT:
761a48d2
JB		 1172 if (elen != 1) {
1173 elem_parse_failed = true;
1174 break;
1175 }
dd76986b 1176 elems->pwr_constr_elem = pos;
dd76986b 1177 break;
c8d65917
SG		 1178 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1179 /* Lots of different options exist, but we only care
1180 * about the Dynamic Transmit Power Control element.
1181 * First check for the Cisco OUI, then for the DTPC
1182 * tag (0x00).
1183 */
1184 if (elen < 4) {
1185 elem_parse_failed = true;
1186 break;
1187 }
1188
1189 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1190 pos[2] != 0x96 || pos[3] != 0x00)
1191 break;
1192
1193 if (elen != 6) {
1194 elem_parse_failed = true;
1195 break;
1196 }
1197
1198 if (calc_crc)
1199 crc = crc32_be(crc, pos - 2, elen + 2);
1200
1201 elems->cisco_dtpc_elem = pos;
1202 break;
2aa485e1
JC		 1203 case WLAN_EID_ADDBA_EXT:
1204 if (elen != sizeof(struct ieee80211_addba_ext_ie)) {
1205 elem_parse_failed = true;
1206 break;
1207 }
1208 elems->addba_ext_ie = (void *)pos;
1209 break;
dd76986b 1210 case WLAN_EID_TIMEOUT_INTERVAL:
79ba1d89
JB		 1211 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1212 elems->timeout_int = (void *)pos;
1213 else
1214 elem_parse_failed = true;
dd76986b 1215 break;
e38a017b
AS		 1216 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1217 if (elen >= sizeof(*elems->max_idle_period_ie))
1218 elems->max_idle_period_ie = (void *)pos;
1219 break;
41cbb0f5
LC		 1220 case WLAN_EID_EXTENSION:
1221 if (pos[0] == WLAN_EID_EXT_HE_MU_EDCA &&
1222 elen >= (sizeof(*elems->mu_edca_param_set) + 1)) {
1223 elems->mu_edca_param_set = (void *)&pos[1];
2e249fc3
ST		 1224 if (calc_crc)
1225 crc = crc32_be(crc, pos - 2, elen + 2);
41cbb0f5
LC		 1226 } else if (pos[0] == WLAN_EID_EXT_HE_CAPABILITY) {
1227 elems->he_cap = (void *)&pos[1];
1228 elems->he_cap_len = elen - 1;
1229 } else if (pos[0] == WLAN_EID_EXT_HE_OPERATION &&
1230 elen >= sizeof(*elems->he_operation) &&
1231 elen >= ieee80211_he_oper_size(&pos[1])) {
1232 elems->he_operation = (void *)&pos[1];
1233 } else if (pos[0] == WLAN_EID_EXT_UORA && elen >= 1) {
1234 elems->uora_element = (void *)&pos[1];
ee145775
SS		 1235 } else if (pos[0] ==
1236 WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME &&
1237 elen == 4) {
1238 elems->max_channel_switch_time = pos + 1;
78ac51f8
SS		 1239 } else if (pos[0] ==
1240 WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION &&
1241 elen == 3) {
1242 elems->mbssid_config_ie = (void *)&pos[1];
ef11a931
JC		 1243 } else if (pos[0] == WLAN_EID_EXT_HE_SPR &&
1244 elen >= sizeof(*elems->he_spr) &&
1245 elen >= ieee80211_he_spr_size(&pos[1])) {
1246 elems->he_spr = (void *)&pos[1];
41cbb0f5
LC		 1247 }
1248 break;
dd76986b
JB		 1249 default:
1250 break;
1251 }
1252
fcff4f10
PS		 1253 if (elem_parse_failed)
1254 elems->parse_error = true;
1255 else
5df45690 1256 __set_bit(id, seen_elems);
dd76986b
JB		 1257 }
1258
c17e28d1 1259 if (!for_each_element_completed(elem, start, len))
fcff4f10
PS		 1260 elems->parse_error = true;
1261
dd76986b
JB		 1262 return crc;
1263}
1264
5023b14c
SS		 1265static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1266 struct ieee802_11_elems *elems,
1267 u8 *transmitter_bssid,
1268 u8 *bss_bssid,
5809a5d5 1269 u8 *nontransmitted_profile)
671042a4
SS		 1270{
1271 const struct element *elem, *sub;
5023b14c
SS		 1272 size_t profile_len = 0;
1273 bool found = false;
671042a4
SS		 1274
1275 if (!bss_bssid || !transmitter_bssid)
5023b14c 1276 return profile_len;
671042a4
SS		 1277
1278 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1279 if (elem->datalen < 2)
1280 continue;
1281
1282 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1283 u8 new_bssid[ETH_ALEN];
1284 const u8 *index;
1285
1286 if (sub->id != 0 || sub->datalen < 4) {
1287 /* not a valid BSS profile */
1288 continue;
1289 }
1290
1291 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1292 sub->data[1] != 2) {
1293 /* The first element of the
1294 * Nontransmitted BSSID Profile is not
1295 * the Nontransmitted BSSID Capability
1296 * element.
1297 */
1298 continue;
1299 }
1300
5809a5d5 1301 memset(nontransmitted_profile, 0, len);
5023b14c
SS		 1302 profile_len = cfg80211_merge_profile(start, len,
1303 elem,
1304 sub,
1305 nontransmitted_profile,
1306 len);
1307
671042a4
SS		 1308 /* found a Nontransmitted BSSID Profile */
1309 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
5809a5d5 1310 nontransmitted_profile,
5023b14c 1311 profile_len);
671042a4
SS		 1312 if (!index || index[1] < 1 || index[2] == 0) {
1313 /* Invalid MBSSID Index element */
1314 continue;
1315 }
1316
1317 cfg80211_gen_new_bssid(transmitter_bssid,
1318 elem->data[0],
1319 index[2],
1320 new_bssid);
1321 if (ether_addr_equal(new_bssid, bss_bssid)) {
5023b14c 1322 found = true;
671042a4
SS		 1323 elems->bssid_index_len = index[1];
1324 elems->bssid_index = (void *)&index[2];
1325 break;
1326 }
1327 }
1328 }
5023b14c
SS		 1329
1330 return found ? profile_len : 0;
671042a4
SS		 1331}
1332
78ac51f8
SS		 1333u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1334 struct ieee802_11_elems *elems,
1335 u64 filter, u32 crc, u8 *transmitter_bssid,
1336 u8 *bss_bssid)
1337{
671042a4 1338 const struct element *non_inherit = NULL;
5023b14c
SS		 1339 u8 *nontransmitted_profile;
1340 int nontransmitted_profile_len = 0;
671042a4 1341
78ac51f8
SS		 1342 memset(elems, 0, sizeof(*elems));
1343 elems->ie_start = start;
1344 elems->total_len = len;
1345
5023b14c
SS		 1346 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1347 if (nontransmitted_profile) {
1348 nontransmitted_profile_len =
1349 ieee802_11_find_bssid_profile(start, len, elems,
1350 transmitter_bssid,
1351 bss_bssid,
5809a5d5 1352 nontransmitted_profile);
671042a4
SS		 1353 non_inherit =
1354 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
5023b14c
SS		 1355 nontransmitted_profile,
1356 nontransmitted_profile_len);
1357 }
671042a4 1358
78ac51f8 1359 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
671042a4 1360 crc, non_inherit);
78ac51f8
SS		 1361
1362 /* Override with nontransmitted profile, if found */
5023b14c
SS		 1363 if (nontransmitted_profile_len)
1364 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1365 nontransmitted_profile_len,
671042a4 1366 action, elems, 0, 0, NULL);
78ac51f8
SS		 1367
1368 if (elems->tim && !elems->parse_error) {
1369 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1370
1371 elems->dtim_period = tim_ie->dtim_period;
1372 elems->dtim_count = tim_ie->dtim_count;
1373 }
1374
1375 /* Override DTIM period and count if needed */
1376 if (elems->bssid_index &&
1377 elems->bssid_index_len >=
1378 offsetofend(struct ieee80211_bssid_index, dtim_period))
1379 elems->dtim_period = elems->bssid_index->dtim_period;
1380
1381 if (elems->bssid_index &&
1382 elems->bssid_index_len >=
1383 offsetofend(struct ieee80211_bssid_index, dtim_count))
1384 elems->dtim_count = elems->bssid_index->dtim_count;
1385
5023b14c
SS		 1386 kfree(nontransmitted_profile);
1387
78ac51f8
SS		 1388 return crc;
1389}
1390
e552af05
HD		 1391void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1392 struct ieee80211_tx_queue_params
1393 *qparam, int ac)
1394{
1395 struct ieee80211_chanctx_conf *chanctx_conf;
1396 const struct ieee80211_reg_rule *rrule;
38cb87ee 1397 const struct ieee80211_wmm_ac *wmm_ac;
e552af05
HD		 1398 u16 center_freq = 0;
1399
1400 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1401 sdata->vif.type != NL80211_IFTYPE_STATION)
1402 return;
1403
1404 rcu_read_lock();
1405 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1406 if (chanctx_conf)
1407 center_freq = chanctx_conf->def.chan->center_freq;
1408
1409 if (!center_freq) {
1410 rcu_read_unlock();
1411 return;
1412 }
1413
1414 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1415
38cb87ee 1416 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
e552af05
HD		 1417 rcu_read_unlock();
1418 return;
1419 }
1420
1421 if (sdata->vif.type == NL80211_IFTYPE_AP)
38cb87ee 1422 wmm_ac = &rrule->wmm_rule.ap[ac];
e552af05 1423 else
38cb87ee 1424 wmm_ac = &rrule->wmm_rule.client[ac];
e552af05
HD		 1425 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1426 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1427 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
abd76d25 1428 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
e552af05
HD		 1429 rcu_read_unlock();
1430}
1431
3abead59 1432void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
cec66283 1433 bool bss_notify, bool enable_qos)
5825fe10
JB		 1434{
1435 struct ieee80211_local *local = sdata->local;
1436 struct ieee80211_tx_queue_params qparam;
55de908a 1437 struct ieee80211_chanctx_conf *chanctx_conf;
54bcbc69 1438 int ac;
cec66283 1439 bool use_11b;
239281f8 1440 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
aa837e1d 1441 int aCWmin, aCWmax;
5825fe10
JB		 1442
1443 if (!local->ops->conf_tx)
1444 return;
1445
54bcbc69
JB		 1446 if (local->hw.queues < IEEE80211_NUM_ACS)
1447 return;
1448
5825fe10
JB		 1449 memset(&qparam, 0, sizeof(qparam));
1450
55de908a
JB		 1451 rcu_read_lock();
1452 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1453 use_11b = (chanctx_conf &&
57fbcce3 1454 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
aa837e1d 1455 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
55de908a 1456 rcu_read_unlock();
5825fe10 1457
239281f8
RL		 1458 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1459
1f4ffde8
FZ		 1460 /* Set defaults according to 802.11-2007 Table 7-37 */
1461 aCWmax = 1023;
1462 if (use_11b)
1463 aCWmin = 31;
1464 else
1465 aCWmin = 15;
1466
1467 /* Confiure old 802.11b/g medium access rules. */
1468 qparam.cw_max = aCWmax;
1469 qparam.cw_min = aCWmin;
1470 qparam.txop = 0;
1471 qparam.aifs = 2;
aa837e1d 1472
1f4ffde8
FZ		 1473 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1474 /* Update if QoS is enabled. */
a8ce8544
SG		 1475 if (enable_qos) {
1476 switch (ac) {
1477 case IEEE80211_AC_BK:
1478 qparam.cw_max = aCWmax;
1479 qparam.cw_min = aCWmin;
1480 qparam.txop = 0;
239281f8
RL		 1481 if (is_ocb)
1482 qparam.aifs = 9;
1483 else
1484 qparam.aifs = 7;
a8ce8544
SG		 1485 break;
1486 /* never happens but let's not leave undefined */
1487 default:
1488 case IEEE80211_AC_BE:
1489 qparam.cw_max = aCWmax;
1490 qparam.cw_min = aCWmin;
1491 qparam.txop = 0;
239281f8
RL		 1492 if (is_ocb)
1493 qparam.aifs = 6;
1494 else
1495 qparam.aifs = 3;
a8ce8544
SG		 1496 break;
1497 case IEEE80211_AC_VI:
1498 qparam.cw_max = aCWmin;
1499 qparam.cw_min = (aCWmin + 1) / 2 - 1;
239281f8
RL		 1500 if (is_ocb)
1501 qparam.txop = 0;
1502 else if (use_11b)
a8ce8544
SG		 1503 qparam.txop = 6016/32;
1504 else
1505 qparam.txop = 3008/32;
239281f8
RL		 1506
1507 if (is_ocb)
1508 qparam.aifs = 3;
1509 else
1510 qparam.aifs = 2;
a8ce8544
SG		 1511 break;
1512 case IEEE80211_AC_VO:
1513 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1514 qparam.cw_min = (aCWmin + 1) / 4 - 1;
239281f8
RL		 1515 if (is_ocb)
1516 qparam.txop = 0;
1517 else if (use_11b)
a8ce8544
SG		 1518 qparam.txop = 3264/32;
1519 else
1520 qparam.txop = 1504/32;
1521 qparam.aifs = 2;
1522 break;
1523 }
aa837e1d 1524 }
e552af05 1525 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
5825fe10 1526
ab13315a
KV		 1527 qparam.uapsd = false;
1528
54bcbc69
JB		 1529 sdata->tx_conf[ac] = qparam;
1530 drv_conf_tx(local, sdata, ac, &qparam);
aa837e1d 1531 }
e1b3ec1a 1532
f142c6b9 1533 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
708d50ed
AB		 1534 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1535 sdata->vif.type != NL80211_IFTYPE_NAN) {
a8ce8544 1536 sdata->vif.bss_conf.qos = enable_qos;
3abead59
JB		 1537 if (bss_notify)
1538 ieee80211_bss_info_change_notify(sdata,
1539 BSS_CHANGED_QOS);
d9734979 1540 }
5825fe10 1541}
e50db65c 1542
46900298 1543void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
700e8ea6 1544 u16 transaction, u16 auth_alg, u16 status,
4a3cb702 1545 const u8 *extra, size_t extra_len, const u8 *da,
1672c0e3
JB		 1546 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1547 u32 tx_flags)
46900298
JB		 1548{
1549 struct ieee80211_local *local = sdata->local;
1550 struct sk_buff *skb;
1551 struct ieee80211_mgmt *mgmt;
fffd0934 1552 int err;
46900298 1553
15e230ab 1554 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
744462a9
MS		 1555 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1556 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
d15b8459 1557 if (!skb)
46900298 1558 return;
d15b8459 1559
744462a9 1560 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
46900298 1561
b080db58 1562 mgmt = skb_put_zero(skb, 24 + 6);
46900298
JB		 1563 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1564 IEEE80211_STYPE_AUTH);
efa6a09d 1565 memcpy(mgmt->da, da, ETH_ALEN);
47846c9b 1566 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
46900298
JB		 1567 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1568 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1569 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
700e8ea6 1570 mgmt->u.auth.status_code = cpu_to_le16(status);
46900298 1571 if (extra)
59ae1d12 1572 skb_put_data(skb, extra, extra_len);
46900298 1573
fffd0934
JB		 1574 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1575 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1576 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1577 WARN_ON(err);
1578 }
1579
1672c0e3
JB		 1580 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1581 tx_flags;
62ae67be 1582 ieee80211_tx_skb(sdata, skb);
46900298
JB		 1583}
1584
6ae16775 1585void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
4b08d1b6
JB		 1586 const u8 *da, const u8 *bssid,
1587 u16 stype, u16 reason,
6ae16775
AQ		 1588 bool send_frame, u8 *frame_buf)
1589{
1590 struct ieee80211_local *local = sdata->local;
1591 struct sk_buff *skb;
1592 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1593
1594 /* build frame */
1595 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1596 mgmt->duration = 0; /* initialize only */
1597 mgmt->seq_ctrl = 0; /* initialize only */
4b08d1b6 1598 memcpy(mgmt->da, da, ETH_ALEN);
6ae16775
AQ		 1599 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1600 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1601 /* u.deauth.reason_code == u.disassoc.reason_code */
1602 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1603
1604 if (send_frame) {
1605 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1606 IEEE80211_DEAUTH_FRAME_LEN);
1607 if (!skb)
1608 return;
1609
1610 skb_reserve(skb, local->hw.extra_tx_headroom);
1611
1612 /* copy in frame */
59ae1d12 1613 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
6ae16775
AQ		 1614
1615 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1616 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1617 IEEE80211_SKB_CB(skb)->flags |=
1618 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1619
1620 ieee80211_tx_skb(sdata, skb);
1621 }
1622}
1623
c56ef672
DS		 1624static int ieee80211_build_preq_ies_band(struct ieee80211_local *local,
1625 u8 *buffer, size_t buffer_len,
1626 const u8 *ie, size_t ie_len,
57fbcce3 1627 enum nl80211_band band,
c56ef672
DS		 1628 u32 rate_mask,
1629 struct cfg80211_chan_def *chandef,
00387f32 1630 size_t *offset, u32 flags)
de95a54b
JB		 1631{
1632 struct ieee80211_supported_band *sband;
41cbb0f5 1633 const struct ieee80211_sta_he_cap *he_cap;
c604b9f2 1634 u8 *pos = buffer, *end = buffer + buffer_len;
c56ef672 1635 size_t noffset;
8e664fb3 1636 int supp_rates_len, i;
8dcb2003
JM		 1637 u8 rates[32];
1638 int num_rates;
1639 int ext_rates_len;
2103dec1
SW		 1640 int shift;
1641 u32 rate_flags;
40a11ca8 1642 bool have_80mhz = false;
de95a54b 1643
c56ef672
DS		 1644 *offset = 0;
1645
4d36ec58 1646 sband = local->hw.wiphy->bands[band];
d811b3d5
AN		 1647 if (WARN_ON_ONCE(!sband))
1648 return 0;
de95a54b 1649
2103dec1
SW		 1650 rate_flags = ieee80211_chandef_rate_flags(chandef);
1651 shift = ieee80211_chandef_get_shift(chandef);
1652
8dcb2003
JM		 1653 num_rates = 0;
1654 for (i = 0; i < sband->n_bitrates; i++) {
1655 if ((BIT(i) & rate_mask) == 0)
1656 continue; /* skip rate */
2103dec1
SW		 1657 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1658 continue;
1659
1660 rates[num_rates++] =
1661 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1662 (1 << shift) * 5);
8dcb2003
JM		 1663 }
1664
1665 supp_rates_len = min_t(int, num_rates, 8);
8e664fb3 1666
c604b9f2
JB		 1667 if (end - pos < 2 + supp_rates_len)
1668 goto out_err;
de95a54b 1669 *pos++ = WLAN_EID_SUPP_RATES;
8e664fb3 1670 *pos++ = supp_rates_len;
8dcb2003
JM		 1671 memcpy(pos, rates, supp_rates_len);
1672 pos += supp_rates_len;
8e664fb3
JB		 1673
1674 /* insert "request information" if in custom IEs */
1675 if (ie && ie_len) {
1676 static const u8 before_extrates[] = {
1677 WLAN_EID_SSID,
1678 WLAN_EID_SUPP_RATES,
1679 WLAN_EID_REQUEST,
1680 };
1681 noffset = ieee80211_ie_split(ie, ie_len,
1682 before_extrates,
1683 ARRAY_SIZE(before_extrates),
c56ef672
DS		 1684 *offset);
1685 if (end - pos < noffset - *offset)
c604b9f2 1686 goto out_err;
c56ef672
DS		 1687 memcpy(pos, ie + *offset, noffset - *offset);
1688 pos += noffset - *offset;
1689 *offset = noffset;
8e664fb3
JB		 1690 }
1691
8dcb2003
JM		 1692 ext_rates_len = num_rates - supp_rates_len;
1693 if (ext_rates_len > 0) {
c604b9f2
JB		 1694 if (end - pos < 2 + ext_rates_len)
1695 goto out_err;
8e664fb3 1696 *pos++ = WLAN_EID_EXT_SUPP_RATES;
8dcb2003
JM		 1697 *pos++ = ext_rates_len;
1698 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1699 pos += ext_rates_len;
8e664fb3
JB		 1700 }
1701
57fbcce3 1702 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
c604b9f2
JB		 1703 if (end - pos < 3)
1704 goto out_err;
651b5225
JM		 1705 *pos++ = WLAN_EID_DS_PARAMS;
1706 *pos++ = 1;
2103dec1
SW		 1707 *pos++ = ieee80211_frequency_to_channel(
1708 chandef->chan->center_freq);
651b5225
JM		 1709 }
1710
b9771d41
JB		 1711 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1712 goto done;
1713
8e664fb3
JB		 1714 /* insert custom IEs that go before HT */
1715 if (ie && ie_len) {
1716 static const u8 before_ht[] = {
a7f26d80
JB		 1717 /*
1718 * no need to list the ones split off already
1719 * (or generated here)
1720 */
8e664fb3
JB		 1721 WLAN_EID_DS_PARAMS,
1722 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1723 };
1724 noffset = ieee80211_ie_split(ie, ie_len,
1725 before_ht, ARRAY_SIZE(before_ht),
c56ef672
DS		 1726 *offset);
1727 if (end - pos < noffset - *offset)
c604b9f2 1728 goto out_err;
c56ef672
DS		 1729 memcpy(pos, ie + *offset, noffset - *offset);
1730 pos += noffset - *offset;
1731 *offset = noffset;
de95a54b
JB		 1732 }
1733
c604b9f2
JB		 1734 if (sband->ht_cap.ht_supported) {
1735 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1736 goto out_err;
ef96a842
BG		 1737 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1738 sband->ht_cap.cap);
c604b9f2 1739 }
5ef2d41a 1740
4d952300 1741 /* insert custom IEs that go before VHT */
8e664fb3 1742 if (ie && ie_len) {
4d952300 1743 static const u8 before_vht[] = {
a7f26d80
JB		 1744 /*
1745 * no need to list the ones split off already
1746 * (or generated here)
1747 */
4d952300
JB		 1748 WLAN_EID_BSS_COEX_2040,
1749 WLAN_EID_EXT_CAPABILITY,
1750 WLAN_EID_SSID_LIST,
1751 WLAN_EID_CHANNEL_USAGE,
1752 WLAN_EID_INTERWORKING,
b44eebea 1753 WLAN_EID_MESH_ID,
a7f26d80 1754 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
4d952300
JB		 1755 };
1756 noffset = ieee80211_ie_split(ie, ie_len,
1757 before_vht, ARRAY_SIZE(before_vht),
c56ef672
DS		 1758 *offset);
1759 if (end - pos < noffset - *offset)
c604b9f2 1760 goto out_err;
c56ef672
DS		 1761 memcpy(pos, ie + *offset, noffset - *offset);
1762 pos += noffset - *offset;
1763 *offset = noffset;
de95a54b
JB		 1764 }
1765
40a11ca8
JB		 1766 /* Check if any channel in this sband supports at least 80 MHz */
1767 for (i = 0; i < sband->n_channels; i++) {
fa44b988
AN		 1768 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1769 IEEE80211_CHAN_NO_80MHZ))
1770 continue;
1771
1772 have_80mhz = true;
1773 break;
40a11ca8
JB		 1774 }
1775
1776 if (sband->vht_cap.vht_supported && have_80mhz) {
c604b9f2
JB		 1777 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1778 goto out_err;
ba0afa2f
MP		 1779 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1780 sband->vht_cap.cap);
c604b9f2 1781 }
ba0afa2f 1782
41cbb0f5
LC		 1783 /* insert custom IEs that go before HE */
1784 if (ie && ie_len) {
1785 static const u8 before_he[] = {
1786 /*
1787 * no need to list the ones split off before VHT
1788 * or generated here
1789 */
1790 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1791 WLAN_EID_AP_CSN,
1792 /* TODO: add 11ah/11aj/11ak elements */
1793 };
1794 noffset = ieee80211_ie_split(ie, ie_len,
1795 before_he, ARRAY_SIZE(before_he),
1796 *offset);
1797 if (end - pos < noffset - *offset)
1798 goto out_err;
1799 memcpy(pos, ie + *offset, noffset - *offset);
1800 pos += noffset - *offset;
1801 *offset = noffset;
1802 }
1803
1804 he_cap = ieee80211_get_he_sta_cap(sband);
1805 if (he_cap) {
1806 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1807 if (!pos)
1808 goto out_err;
1809 }
1810
1811 /*
1812 * If adding more here, adjust code in main.c
1813 * that calculates local->scan_ies_len.
1814 */
1815
c604b9f2
JB		 1816 return pos - buffer;
1817 out_err:
1818 WARN_ONCE(1, "not enough space for preq IEs\n");
b9771d41 1819 done:
de95a54b
JB		 1820 return pos - buffer;
1821}
1822
c56ef672
DS		 1823int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1824 size_t buffer_len,
1825 struct ieee80211_scan_ies *ie_desc,
1826 const u8 *ie, size_t ie_len,
1827 u8 bands_used, u32 *rate_masks,
00387f32
JB		 1828 struct cfg80211_chan_def *chandef,
1829 u32 flags)
c56ef672
DS		 1830{
1831 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1832 int i;
1833
1834 memset(ie_desc, 0, sizeof(*ie_desc));
1835
57fbcce3 1836 for (i = 0; i < NUM_NL80211_BANDS; i++) {
c56ef672
DS		 1837 if (bands_used & BIT(i)) {
1838 pos += ieee80211_build_preq_ies_band(local,
1839 buffer + pos,
1840 buffer_len - pos,
1841 ie, ie_len, i,
1842 rate_masks[i],
1843 chandef,
00387f32
JB		 1844 &custom_ie_offset,
1845 flags);
c56ef672
DS		 1846 ie_desc->ies[i] = buffer + old_pos;
1847 ie_desc->len[i] = pos - old_pos;
1848 old_pos = pos;
1849 }
1850 }
1851
1852 /* add any remaining custom IEs */
1853 if (ie && ie_len) {
1854 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1855 "not enough space for preq custom IEs\n"))
1856 return pos;
1857 memcpy(buffer + pos, ie + custom_ie_offset,
1858 ie_len - custom_ie_offset);
1859 ie_desc->common_ies = buffer + pos;
1860 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1861 pos += ie_len - custom_ie_offset;
1862 }
1863
1864 return pos;
1865};
1866
a619a4c0 1867struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
a344d677
JB		 1868 const u8 *src, const u8 *dst,
1869 u32 ratemask,
6b77863b 1870 struct ieee80211_channel *chan,
a619a4c0 1871 const u8 *ssid, size_t ssid_len,
a806c558 1872 const u8 *ie, size_t ie_len,
00387f32 1873 u32 flags)
46900298
JB		 1874{
1875 struct ieee80211_local *local = sdata->local;
2103dec1 1876 struct cfg80211_chan_def chandef;
46900298
JB		 1877 struct sk_buff *skb;
1878 struct ieee80211_mgmt *mgmt;
b9a9ada1 1879 int ies_len;
57fbcce3 1880 u32 rate_masks[NUM_NL80211_BANDS] = {};
c56ef672 1881 struct ieee80211_scan_ies dummy_ie_desc;
46900298 1882
a806c558
PS		 1883 /*
1884 * Do not send DS Channel parameter for directed probe requests
1885 * in order to maximize the chance that we get a response. Some
1886 * badly-behaved APs don't respond when this parameter is included.
1887 */
2103dec1 1888 chandef.width = sdata->vif.bss_conf.chandef.width;
00387f32 1889 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2103dec1 1890 chandef.chan = NULL;
a806c558 1891 else
2103dec1 1892 chandef.chan = chan;
651b5225 1893
a344d677
JB		 1894 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1895 100 + ie_len);
5b2bbf75 1896 if (!skb)
b9a9ada1
JB		 1897 return NULL;
1898
c56ef672 1899 rate_masks[chan->band] = ratemask;
b9a9ada1 1900 ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
c56ef672
DS		 1901 skb_tailroom(skb), &dummy_ie_desc,
1902 ie, ie_len, BIT(chan->band),
00387f32 1903 rate_masks, &chandef, flags);
b9a9ada1 1904 skb_put(skb, ies_len);
7c12ce8b 1905
46900298 1906 if (dst) {
7c12ce8b 1907 mgmt = (struct ieee80211_mgmt *) skb->data;
46900298
JB		 1908 memcpy(mgmt->da, dst, ETH_ALEN);
1909 memcpy(mgmt->bssid, dst, ETH_ALEN);
46900298 1910 }
46900298 1911
62ae67be 1912 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
5b2bbf75 1913
a619a4c0
JO		 1914 return skb;
1915}
1916
2103dec1 1917u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
46900298 1918 struct ieee802_11_elems *elems,
57fbcce3 1919 enum nl80211_band band, u32 *basic_rates)
46900298
JB		 1920{
1921 struct ieee80211_supported_band *sband;
46900298 1922 size_t num_rates;
2103dec1
SW		 1923 u32 supp_rates, rate_flags;
1924 int i, j, shift;
21a8e9dd 1925
2103dec1 1926 sband = sdata->local->hw.wiphy->bands[band];
21a8e9dd
MSS		 1927 if (WARN_ON(!sband))
1928 return 1;
2103dec1
SW		 1929
1930 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1931 shift = ieee80211_vif_get_shift(&sdata->vif);
46900298 1932
46900298
JB		 1933 num_rates = sband->n_bitrates;
1934 supp_rates = 0;
1935 for (i = 0; i < elems->supp_rates_len +
1936 elems->ext_supp_rates_len; i++) {
1937 u8 rate = 0;
1938 int own_rate;
9ebb61a2 1939 bool is_basic;
46900298
JB		 1940 if (i < elems->supp_rates_len)
1941 rate = elems->supp_rates[i];
1942 else if (elems->ext_supp_rates)
1943 rate = elems->ext_supp_rates
1944 [i - elems->supp_rates_len];
1945 own_rate = 5 * (rate & 0x7f);
9ebb61a2
AN		 1946 is_basic = !!(rate & 0x80);
1947
1948 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
1949 continue;
1950
1951 for (j = 0; j < num_rates; j++) {
2103dec1
SW		 1952 int brate;
1953 if ((rate_flags & sband->bitrates[j].flags)
1954 != rate_flags)
1955 continue;
1956
1957 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
1958 1 << shift);
1959
1960 if (brate == own_rate) {
46900298 1961 supp_rates |= BIT(j);
9ebb61a2
AN		 1962 if (basic_rates && is_basic)
1963 *basic_rates |= BIT(j);
1964 }
1965 }
46900298
JB		 1966 }
1967 return supp_rates;
1968}
f2753ddb 1969
84f6a01c
JB		 1970void ieee80211_stop_device(struct ieee80211_local *local)
1971{
1972 ieee80211_led_radio(local, false);
67408c8c 1973 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
84f6a01c
JB		 1974
1975 cancel_work_sync(&local->reconfig_filter);
84f6a01c
JB		 1976
1977 flush_workqueue(local->workqueue);
678f415f 1978 drv_stop(local);
84f6a01c
JB		 1979}
1980
74430f94
JB		 1981static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
1982 bool aborted)
1983{
1984 /* It's possible that we don't handle the scan completion in
1985 * time during suspend, so if it's still marked as completed
1986 * here, queue the work and flush it to clean things up.
1987 * Instead of calling the worker function directly here, we
1988 * really queue it to avoid potential races with other flows
1989 * scheduling the same work.
1990 */
1991 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
1992 /* If coming from reconfiguration failure, abort the scan so
1993 * we don't attempt to continue a partial HW scan - which is
1994 * possible otherwise if (e.g.) the 2.4 GHz portion was the
1995 * completed scan, and a 5 GHz portion is still pending.
1996 */
1997 if (aborted)
1998 set_bit(SCAN_ABORTED, &local->scanning);
1999 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2000 flush_delayed_work(&local->scan_work);
2001 }
2002}
2003
f6837ba8
JB		 2004static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2005{
2006 struct ieee80211_sub_if_data *sdata;
2007 struct ieee80211_chanctx *ctx;
2008
2009 /*
2010 * We get here if during resume the device can't be restarted properly.
2011 * We might also get here if this happens during HW reset, which is a
2012 * slightly different situation and we need to drop all connections in
2013 * the latter case.
2014 *
2015 * Ask cfg80211 to turn off all interfaces, this will result in more
2016 * warnings but at least we'll then get into a clean stopped state.
2017 */
2018
2019 local->resuming = false;
2020 local->suspended = false;
7584f88f 2021 local->in_reconfig = false;
f6837ba8 2022
74430f94
JB		 2023 ieee80211_flush_completed_scan(local, true);
2024
f6837ba8
JB		 2025 /* scheduled scan clearly can't be running any more, but tell
2026 * cfg80211 and clear local state
2027 */
2028 ieee80211_sched_scan_end(local);
2029
2030 list_for_each_entry(sdata, &local->interfaces, list)
2031 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2032
2033 /* Mark channel contexts as not being in the driver any more to avoid
2034 * removing them from the driver during the shutdown process...
2035 */
2036 mutex_lock(&local->chanctx_mtx);
2037 list_for_each_entry(ctx, &local->chanctx_list, list)
2038 ctx->driver_present = false;
2039 mutex_unlock(&local->chanctx_mtx);
2040
2041 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
2042}
2043
153a5fc4
SG		 2044static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2045 struct ieee80211_sub_if_data *sdata)
2046{
2047 struct ieee80211_chanctx_conf *conf;
2048 struct ieee80211_chanctx *ctx;
2049
2050 if (!local->use_chanctx)
2051 return;
2052
2053 mutex_lock(&local->chanctx_mtx);
2054 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2055 lockdep_is_held(&local->chanctx_mtx));
2056 if (conf) {
2057 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2058 drv_assign_vif_chanctx(local, sdata, ctx);
2059 }
2060 mutex_unlock(&local->chanctx_mtx);
2061}
2062
1ea2c864
JB		 2063static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2064{
2065 struct ieee80211_local *local = sdata->local;
2066 struct sta_info *sta;
2067
2068 /* add STAs back */
2069 mutex_lock(&local->sta_mtx);
2070 list_for_each_entry(sta, &local->sta_list, list) {
2071 enum ieee80211_sta_state state;
2072
2073 if (!sta->uploaded || sta->sdata != sdata)
2074 continue;
2075
2076 for (state = IEEE80211_STA_NOTEXIST;
2077 state < sta->sta_state; state++)
2078 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2079 state + 1));
2080 }
2081 mutex_unlock(&local->sta_mtx);
2082}
2083
167e33f4
AB		 2084static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2085{
2086 struct cfg80211_nan_func *func, **funcs;
2087 int res, id, i = 0;
2088
2089 res = drv_start_nan(sdata->local, sdata,
2090 &sdata->u.nan.conf);
2091 if (WARN_ON(res))
2092 return res;
2093
6396bb22
KC		 2094 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2095 sizeof(*funcs),
2096 GFP_KERNEL);
167e33f4
AB		 2097 if (!funcs)
2098 return -ENOMEM;
2099
2100 /* Add all the functions:
2101 * This is a little bit ugly. We need to call a potentially sleeping
2102 * callback for each NAN function, so we can't hold the spinlock.
2103 */
2104 spin_lock_bh(&sdata->u.nan.func_lock);
2105
2106 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2107 funcs[i++] = func;
2108
2109 spin_unlock_bh(&sdata->u.nan.func_lock);
2110
2111 for (i = 0; funcs[i]; i++) {
2112 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2113 if (WARN_ON(res))
2114 ieee80211_nan_func_terminated(&sdata->vif,
2115 funcs[i]->instance_id,
2116 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2117 GFP_KERNEL);
2118 }
2119
2120 kfree(funcs);
2121
2122 return 0;
2123}
2124
f2753ddb
JB		 2125int ieee80211_reconfig(struct ieee80211_local *local)
2126{
2127 struct ieee80211_hw *hw = &local->hw;
2128 struct ieee80211_sub_if_data *sdata;
55de908a 2129 struct ieee80211_chanctx *ctx;
f2753ddb 2130 struct sta_info *sta;
2683d65b 2131 int res, i;
d888130a 2132 bool reconfig_due_to_wowlan = false;
d43c6b6e 2133 struct ieee80211_sub_if_data *sched_scan_sdata;
6ea0a69c 2134 struct cfg80211_sched_scan_request *sched_scan_req;
d43c6b6e 2135 bool sched_scan_stopped = false;
b0485e9f 2136 bool suspended = local->suspended;
d888130a 2137
0f8b8245
EP		 2138 /* nothing to do if HW shouldn't run */
2139 if (!local->open_count)
2140 goto wake_up;
2141
8f21b0ad 2142#ifdef CONFIG_PM
b0485e9f 2143 if (suspended)
ceb99fe0 2144 local->resuming = true;
f2753ddb 2145
eecc4800 2146 if (local->wowlan) {
b0485e9f
EP		 2147 /*
2148 * In the wowlan case, both mac80211 and the device
2149 * are functional when the resume op is called, so
2150 * clear local->suspended so the device could operate
2151 * normally (e.g. pass rx frames).
2152 */
2153 local->suspended = false;
eecc4800 2154 res = drv_resume(local);
27b3eb9c 2155 local->wowlan = false;
eecc4800
JB		 2156 if (res < 0) {
2157 local->resuming = false;
2158 return res;
2159 }
2160 if (res == 0)
2161 goto wake_up;
2162 WARN_ON(res > 1);
2163 /*
2164 * res is 1, which means the driver requested
2165 * to go through a regular reset on wakeup.
b0485e9f 2166 * restore local->suspended in this case.
eecc4800 2167 */
d888130a 2168 reconfig_due_to_wowlan = true;
b0485e9f 2169 local->suspended = true;
eecc4800
JB		 2170 }
2171#endif
f2753ddb 2172
43d6df00
EP		 2173 /*
2174 * In case of hw_restart during suspend (without wowlan),
2175 * cancel restart work, as we are reconfiguring the device
2176 * anyway.
2177 * Note that restart_work is scheduled on a frozen workqueue,
2178 * so we can't deadlock in this case.
2179 */
2180 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2181 cancel_work_sync(&local->restart_work);
2182
968a76ce
EP		 2183 local->started = false;
2184
94f9b97b
JB		 2185 /*
2186 * Upon resume hardware can sometimes be goofy due to
2187 * various platform / driver / bus issues, so restarting
2188 * the device may at times not work immediately. Propagate
2189 * the error.
2190 */
2191 res = drv_start(local);
2192 if (res) {
b0485e9f 2193 if (suspended)
f6837ba8
JB		 2194 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2195 else
2196 WARN(1, "Hardware became unavailable during restart.\n");
2197 ieee80211_handle_reconfig_failure(local);
94f9b97b 2198 return res;
f2753ddb
JB		 2199 }
2200
7f281975
YAP		 2201 /* setup fragmentation threshold */
2202 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2203
2204 /* setup RTS threshold */
2205 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2206
2207 /* reset coverage class */
2208 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2209
94f9b97b
JB		 2210 ieee80211_led_radio(local, true);
2211 ieee80211_mod_tpt_led_trig(local,
2212 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2213
f2753ddb 2214 /* add interfaces */
4b6f1dd6
JB		 2215 sdata = rtnl_dereference(local->monitor_sdata);
2216 if (sdata) {
3c3e21e7
JB		 2217 /* in HW restart it exists already */
2218 WARN_ON(local->resuming);
4b6f1dd6
JB		 2219 res = drv_add_interface(local, sdata);
2220 if (WARN_ON(res)) {
0c2bef46 2221 RCU_INIT_POINTER(local->monitor_sdata, NULL);
4b6f1dd6
JB		 2222 synchronize_net();
2223 kfree(sdata);
2224 }
2225 }
2226
f2753ddb
JB		 2227 list_for_each_entry(sdata, &local->interfaces, list) {
2228 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2229 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
c8fff3dc 2230 ieee80211_sdata_running(sdata)) {
7b7eab6f 2231 res = drv_add_interface(local, sdata);
c8fff3dc
LC		 2232 if (WARN_ON(res))
2233 break;
2234 }
2235 }
2236
2237 /* If adding any of the interfaces failed above, roll back and
2238 * report failure.
2239 */
2240 if (res) {
2241 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2242 list)
2243 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2244 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2245 ieee80211_sdata_running(sdata))
2246 drv_remove_interface(local, sdata);
2247 ieee80211_handle_reconfig_failure(local);
2248 return res;
f2753ddb
JB		 2249 }
2250
55de908a 2251 /* add channel contexts */
f0dea9c7
AS		 2252 if (local->use_chanctx) {
2253 mutex_lock(&local->chanctx_mtx);
2254 list_for_each_entry(ctx, &local->chanctx_list, list)
5bcae31d
MK		 2255 if (ctx->replace_state !=
2256 IEEE80211_CHANCTX_REPLACES_OTHER)
2257 WARN_ON(drv_add_chanctx(local, ctx));
f0dea9c7 2258 mutex_unlock(&local->chanctx_mtx);
55de908a 2259
7df180f7
ZG		 2260 sdata = rtnl_dereference(local->monitor_sdata);
2261 if (sdata && ieee80211_sdata_running(sdata))
2262 ieee80211_assign_chanctx(local, sdata);
2263 }
fe5f2559 2264
f2753ddb
JB		 2265 /* reconfigure hardware */
2266 ieee80211_hw_config(local, ~0);
2267
f2753ddb 2268 ieee80211_configure_filter(local);
f2753ddb
JB		 2269
2270 /* Finally also reconfigure all the BSS information */
2271 list_for_each_entry(sdata, &local->interfaces, list) {
ac8dd506
JB		 2272 u32 changed;
2273
9607e6b6 2274 if (!ieee80211_sdata_running(sdata))
f2753ddb 2275 continue;
ac8dd506 2276
1ea2c864
JB		 2277 ieee80211_assign_chanctx(local, sdata);
2278
2279 switch (sdata->vif.type) {
2280 case NL80211_IFTYPE_AP_VLAN:
2281 case NL80211_IFTYPE_MONITOR:
2282 break;
4926b51b
JB		 2283 case NL80211_IFTYPE_ADHOC:
2284 if (sdata->vif.bss_conf.ibss_joined)
2285 WARN_ON(drv_join_ibss(local, sdata));
2286 /* fall through */
1ea2c864
JB		 2287 default:
2288 ieee80211_reconfig_stations(sdata);
2289 /* fall through */
2290 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2291 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2292 drv_conf_tx(local, sdata, i,
2293 &sdata->tx_conf[i]);
2294 break;
2295 }
2296
ac8dd506
JB		 2297 /* common change flags for all interface types */
2298 changed = BSS_CHANGED_ERP_CTS_PROT |
2299 BSS_CHANGED_ERP_PREAMBLE |
2300 BSS_CHANGED_ERP_SLOT |
2301 BSS_CHANGED_HT |
2302 BSS_CHANGED_BASIC_RATES |
2303 BSS_CHANGED_BEACON_INT |
2304 BSS_CHANGED_BSSID |
4ced3f74 2305 BSS_CHANGED_CQM |
55de47f6 2306 BSS_CHANGED_QOS |
1ea6f9c0 2307 BSS_CHANGED_IDLE |
dcbe73ca
PKC		 2308 BSS_CHANGED_TXPOWER |
2309 BSS_CHANGED_MCAST_RATE;
ac8dd506 2310
b5a33d52 2311 if (sdata->vif.mu_mimo_owner)
23a1f8d4
SS		 2312 changed |= BSS_CHANGED_MU_GROUPS;
2313
f2753ddb
JB		 2314 switch (sdata->vif.type) {
2315 case NL80211_IFTYPE_STATION:
0d392e93 2316 changed |= BSS_CHANGED_ASSOC |
ab095877
EP		 2317 BSS_CHANGED_ARP_FILTER |
2318 BSS_CHANGED_PS;
c65dd147 2319
989c6505
AB		 2320 /* Re-send beacon info report to the driver */
2321 if (sdata->u.mgd.have_beacon)
2322 changed |= BSS_CHANGED_BEACON_INFO;
c65dd147 2323
e38a017b
AS		 2324 if (sdata->vif.bss_conf.max_idle_period ||
2325 sdata->vif.bss_conf.protected_keep_alive)
2326 changed |= BSS_CHANGED_KEEP_ALIVE;
2327
8d61ffa5 2328 sdata_lock(sdata);
ac8dd506 2329 ieee80211_bss_info_change_notify(sdata, changed);
8d61ffa5 2330 sdata_unlock(sdata);
ac8dd506 2331 break;
6e0bd6c3 2332 case NL80211_IFTYPE_OCB:
239281f8
RL		 2333 changed |= BSS_CHANGED_OCB;
2334 ieee80211_bss_info_change_notify(sdata, changed);
6e0bd6c3 2335 break;
f2753ddb 2336 case NL80211_IFTYPE_ADHOC:
ac8dd506
JB		 2337 changed |= BSS_CHANGED_IBSS;
2338 /* fall through */
f2753ddb 2339 case NL80211_IFTYPE_AP:
339afbf4 2340 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
e7979ac7 2341
bc847970
PKC		 2342 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2343 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2344 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2345 changed |= BSS_CHANGED_FTM_RESPONDER;
2346
1041638f 2347 if (sdata->vif.type == NL80211_IFTYPE_AP) {
e7979ac7
AN		 2348 changed |= BSS_CHANGED_AP_PROBE_RESP;
2349
1041638f
JB		 2350 if (rcu_access_pointer(sdata->u.ap.beacon))
2351 drv_start_ap(local, sdata);
2352 }
2353
7827493b 2354 /* fall through */
f2753ddb 2355 case NL80211_IFTYPE_MESH_POINT:
8da34932
JB		 2356 if (sdata->vif.bss_conf.enable_beacon) {
2357 changed |= BSS_CHANGED_BEACON |
2358 BSS_CHANGED_BEACON_ENABLED;
2359 ieee80211_bss_info_change_notify(sdata, changed);
2360 }
f2753ddb 2361 break;
167e33f4
AB		 2362 case NL80211_IFTYPE_NAN:
2363 res = ieee80211_reconfig_nan(sdata);
2364 if (res < 0) {
2365 ieee80211_handle_reconfig_failure(local);
2366 return res;
2367 }
2368 break;
f2753ddb 2369 case NL80211_IFTYPE_WDS:
f2753ddb
JB		 2370 case NL80211_IFTYPE_AP_VLAN:
2371 case NL80211_IFTYPE_MONITOR:
98104fde 2372 case NL80211_IFTYPE_P2P_DEVICE:
b205786e 2373 /* nothing to do */
f142c6b9 2374 break;
f2753ddb 2375 case NL80211_IFTYPE_UNSPECIFIED:
2e161f78 2376 case NUM_NL80211_IFTYPES:
2ca27bcf
JB		 2377 case NL80211_IFTYPE_P2P_CLIENT:
2378 case NL80211_IFTYPE_P2P_GO:
f2753ddb
JB		 2379 WARN_ON(1);
2380 break;
2381 }
2382 }
2383
4a733ef1 2384 ieee80211_recalc_ps(local);
8e1b23b9 2385
6e1b1b24
EP		 2386 /*
2387 * The sta might be in psm against the ap (e.g. because
2388 * this was the state before a hw restart), so we
2389 * explicitly send a null packet in order to make sure
2390 * it'll sync against the ap (and get out of psm).
2391 */
2392 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2393 list_for_each_entry(sdata, &local->interfaces, list) {
2394 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2395 continue;
20f544ee
JB		 2396 if (!sdata->u.mgd.associated)
2397 continue;
6e1b1b24 2398
076cdcb1 2399 ieee80211_send_nullfunc(local, sdata, false);
6e1b1b24
EP		 2400 }
2401 }
2402
2e8d397e
AN		 2403 /* APs are now beaconing, add back stations */
2404 mutex_lock(&local->sta_mtx);
2405 list_for_each_entry(sta, &local->sta_list, list) {
2406 enum ieee80211_sta_state state;
2407
2408 if (!sta->uploaded)
2409 continue;
2410
19103a4b 2411 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2412 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2e8d397e
AN		 2413 continue;
2414
2415 for (state = IEEE80211_STA_NOTEXIST;
2416 state < sta->sta_state; state++)
2417 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2418 state + 1));
2419 }
2420 mutex_unlock(&local->sta_mtx);
2421
7b21aea0 2422 /* add back keys */
f9dca80b 2423 list_for_each_entry(sdata, &local->interfaces, list)
624ff4b2 2424 ieee80211_reenable_keys(sdata);
7b21aea0 2425
0d440ea2
EP		 2426 /* Reconfigure sched scan if it was interrupted by FW restart */
2427 mutex_lock(&local->mtx);
2428 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2429 lockdep_is_held(&local->mtx));
2430 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2431 lockdep_is_held(&local->mtx));
2432 if (sched_scan_sdata && sched_scan_req)
2433 /*
2434 * Sched scan stopped, but we don't want to report it. Instead,
2435 * we're trying to reschedule. However, if more than one scan
2436 * plan was set, we cannot reschedule since we don't know which
2437 * scan plan was currently running (and some scan plans may have
2438 * already finished).
2439 */
2440 if (sched_scan_req->n_scan_plans > 1 ||
2441 __ieee80211_request_sched_scan_start(sched_scan_sdata,
b9f628fc
EP		 2442 sched_scan_req)) {
2443 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2444 RCU_INIT_POINTER(local->sched_scan_req, NULL);
0d440ea2 2445 sched_scan_stopped = true;
b9f628fc 2446 }
0d440ea2
EP		 2447 mutex_unlock(&local->mtx);
2448
2449 if (sched_scan_stopped)
b34939b9 2450 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
0d440ea2 2451
c6209488 2452 wake_up:
04800ada 2453
3c3e21e7
JB		 2454 if (local->monitors == local->open_count && local->monitors > 0)
2455 ieee80211_add_virtual_monitor(local);
2456
2a419056
JB		 2457 /*
2458 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2459 * sessions can be established after a resume.
2460 *
2461 * Also tear down aggregation sessions since reconfiguring
2462 * them in a hardware restart scenario is not easily done
2463 * right now, and the hardware will have lost information
2464 * about the sessions, but we and the AP still think they
2465 * are active. This is really a workaround though.
2466 */
30686bf7 2467 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2a419056
JB		 2468 mutex_lock(&local->sta_mtx);
2469
2470 list_for_each_entry(sta, &local->sta_list, list) {
27392719
EP		 2471 if (!local->resuming)
2472 ieee80211_sta_tear_down_BA_sessions(
2473 sta, AGG_STOP_LOCAL_REQUEST);
c2c98fde 2474 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
74e2bd1f 2475 }
2a419056
JB		 2476
2477 mutex_unlock(&local->sta_mtx);
74e2bd1f 2478 }
74e2bd1f 2479
2316380f
SS		 2480 if (local->in_reconfig) {
2481 local->in_reconfig = false;
2482 barrier();
2483
2484 /* Restart deferred ROCs */
2485 mutex_lock(&local->mtx);
2486 ieee80211_start_next_roc(local);
2487 mutex_unlock(&local->mtx);
f8891461
NG		 2488
2489 /* Requeue all works */
2490 list_for_each_entry(sdata, &local->interfaces, list)
2491 ieee80211_queue_work(&local->hw, &sdata->work);
2316380f
SS		 2492 }
2493
445ea4e8 2494 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 2495 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2496 false);
f2753ddb 2497
5bb644a0
JB		 2498 /*
2499 * If this is for hw restart things are still running.
2500 * We may want to change that later, however.
2501 */
b0485e9f 2502 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
cf2c92d8 2503 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
8f21b0ad 2504
b0485e9f 2505 if (!suspended)
5bb644a0
JB		 2506 return 0;
2507
2508#ifdef CONFIG_PM
ceb99fe0 2509 /* first set suspended false, then resuming */
5bb644a0 2510 local->suspended = false;
ceb99fe0
JB		 2511 mb();
2512 local->resuming = false;
5bb644a0 2513
74430f94 2514 ieee80211_flush_completed_scan(local, false);
9120d94e 2515
0f8b8245 2516 if (local->open_count && !reconfig_due_to_wowlan)
cf2c92d8
EP		 2517 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2518
b8360ab8
JB		 2519 list_for_each_entry(sdata, &local->interfaces, list) {
2520 if (!ieee80211_sdata_running(sdata))
2521 continue;
2522 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2523 ieee80211_sta_restart(sdata);
2524 }
2525
26d59535 2526 mod_timer(&local->sta_cleanup, jiffies + 1);
5bb644a0
JB		 2527#else
2528 WARN_ON(1);
2529#endif
d43c6b6e 2530
f2753ddb
JB		 2531 return 0;
2532}
42935eca 2533
95acac61
JB		 2534void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2535{
2536 struct ieee80211_sub_if_data *sdata;
2537 struct ieee80211_local *local;
2538 struct ieee80211_key *key;
2539
2540 if (WARN_ON(!vif))
2541 return;
2542
2543 sdata = vif_to_sdata(vif);
2544 local = sdata->local;
2545
2546 if (WARN_ON(!local->resuming))
2547 return;
2548
2549 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2550 return;
2551
2552 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2553
2554 mutex_lock(&local->key_mtx);
2555 list_for_each_entry(key, &sdata->key_list, list)
2556 key->flags |= KEY_FLAG_TAINTED;
2557 mutex_unlock(&local->key_mtx);
2558}
2559EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2560
04ecd257 2561void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
0f78231b 2562{
04ecd257
JB		 2563 struct ieee80211_local *local = sdata->local;
2564 struct ieee80211_chanctx_conf *chanctx_conf;
2565 struct ieee80211_chanctx *chanctx;
025e6be2 2566
04ecd257 2567 mutex_lock(&local->chanctx_mtx);
0f78231b 2568
04ecd257
JB		 2569 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2570 lockdep_is_held(&local->chanctx_mtx));
0f78231b 2571
c189a685
AO		 2572 /*
2573 * This function can be called from a work, thus it may be possible
2574 * that the chanctx_conf is removed (due to a disconnection, for
2575 * example).
2576 * So nothing should be done in such case.
2577 */
2578 if (!chanctx_conf)
5d8e4237 2579 goto unlock;
0f78231b 2580
04ecd257
JB		 2581 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2582 ieee80211_recalc_smps_chanctx(local, chanctx);
5d8e4237 2583 unlock:
04ecd257 2584 mutex_unlock(&local->chanctx_mtx);
0f78231b 2585}
8e664fb3 2586
21f659bf
EP		 2587void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2588{
2589 struct ieee80211_local *local = sdata->local;
2590 struct ieee80211_chanctx_conf *chanctx_conf;
2591 struct ieee80211_chanctx *chanctx;
2592
2593 mutex_lock(&local->chanctx_mtx);
2594
2595 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2596 lockdep_is_held(&local->chanctx_mtx));
2597
2598 if (WARN_ON_ONCE(!chanctx_conf))
2599 goto unlock;
2600
2601 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2602 ieee80211_recalc_chanctx_min_def(local, chanctx);
2603 unlock:
2604 mutex_unlock(&local->chanctx_mtx);
2605}
2606
8e664fb3
JB		 2607size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2608{
2609 size_t pos = offset;
2610
2611 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2612 pos += 2 + ies[pos + 1];
2613
2614 return pos;
2615}
615f7b9b
MV		 2616
2617static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2618 int rssi_min_thold,
2619 int rssi_max_thold)
2620{
2621 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2622
2623 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2624 return;
2625
2626 /*
2627 * Scale up threshold values before storing it, as the RSSI averaging
2628 * algorithm uses a scaled up value as well. Change this scaling
2629 * factor if the RSSI averaging algorithm changes.
2630 */
2631 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2632 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2633}
2634
2635void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2636 int rssi_min_thold,
2637 int rssi_max_thold)
2638{
2639 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2640
2641 WARN_ON(rssi_min_thold == rssi_max_thold ||
2642 rssi_min_thold > rssi_max_thold);
2643
2644 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2645 rssi_max_thold);
2646}
2647EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2648
2649void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2650{
2651 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2652
2653 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2654}
2655EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
768db343 2656
ef96a842 2657u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
42e7aa77
AS		 2658 u16 cap)
2659{
2660 __le16 tmp;
2661
2662 *pos++ = WLAN_EID_HT_CAPABILITY;
2663 *pos++ = sizeof(struct ieee80211_ht_cap);
2664 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2665
2666 /* capability flags */
2667 tmp = cpu_to_le16(cap);
2668 memcpy(pos, &tmp, sizeof(u16));
2669 pos += sizeof(u16);
2670
2671 /* AMPDU parameters */
ef96a842
BG		 2672 *pos++ = ht_cap->ampdu_factor |
2673 (ht_cap->ampdu_density <<
42e7aa77
AS		 2674 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2675
2676 /* MCS set */
ef96a842
BG		 2677 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2678 pos += sizeof(ht_cap->mcs);
42e7aa77
AS		 2679
2680 /* extended capabilities */
2681 pos += sizeof(__le16);
2682
2683 /* BF capabilities */
2684 pos += sizeof(__le32);
2685
2686 /* antenna selection */
2687 pos += sizeof(u8);
2688
2689 return pos;
2690}
2691
ba0afa2f 2692u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
cc3983d8 2693 u32 cap)
ba0afa2f
MP		 2694{
2695 __le32 tmp;
2696
2697 *pos++ = WLAN_EID_VHT_CAPABILITY;
d4950281
MP		 2698 *pos++ = sizeof(struct ieee80211_vht_cap);
2699 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
ba0afa2f
MP		 2700
2701 /* capability flags */
2702 tmp = cpu_to_le32(cap);
2703 memcpy(pos, &tmp, sizeof(u32));
2704 pos += sizeof(u32);
2705
2706 /* VHT MCS set */
2707 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2708 pos += sizeof(vht_cap->vht_mcs);
2709
2710 return pos;
2711}
2712
60ad72da
SE		 2713u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2714{
2715 const struct ieee80211_sta_he_cap *he_cap;
2716 struct ieee80211_supported_band *sband;
2717 u8 n;
2718
2719 sband = ieee80211_get_sband(sdata);
2720 if (!sband)
2721 return 0;
2722
2723 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2724 if (!he_cap)
2725 return 0;
2726
2727 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2728 return 2 + 1 +
2729 sizeof(he_cap->he_cap_elem) + n +
2730 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2731 he_cap->he_cap_elem.phy_cap_info);
2732}
2733
41cbb0f5
LC		 2734u8 *ieee80211_ie_build_he_cap(u8 *pos,
2735 const struct ieee80211_sta_he_cap *he_cap,
2736 u8 *end)
2737{
2738 u8 n;
2739 u8 ie_len;
2740 u8 *orig_pos = pos;
2741
2742 /* Make sure we have place for the IE */
2743 /*
2744 * TODO: the 1 added is because this temporarily is under the EXTENSION
2745 * IE. Get rid of it when it moves.
2746 */
2747 if (!he_cap)
2748 return orig_pos;
2749
2750 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2751 ie_len = 2 + 1 +
2752 sizeof(he_cap->he_cap_elem) + n +
2753 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2754 he_cap->he_cap_elem.phy_cap_info);
2755
2756 if ((end - pos) < ie_len)
2757 return orig_pos;
2758
2759 *pos++ = WLAN_EID_EXTENSION;
2760 pos++; /* We'll set the size later below */
2761 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2762
2763 /* Fixed data */
2764 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2765 pos += sizeof(he_cap->he_cap_elem);
2766
2767 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2768 pos += n;
2769
2770 /* Check if PPE Threshold should be present */
2771 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2772 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2773 goto end;
2774
2775 /*
2776 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2777 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2778 */
2779 n = hweight8(he_cap->ppe_thres[0] &
2780 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2781 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2782 IEEE80211_PPE_THRES_NSS_POS));
2783
2784 /*
2785 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2786 * total size.
2787 */
2788 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2789 n = DIV_ROUND_UP(n, 8);
2790
2791 /* Copy PPE Thresholds */
2792 memcpy(pos, &he_cap->ppe_thres, n);
2793 pos += n;
2794
2795end:
2796 orig_pos[1] = (pos - orig_pos) - 2;
2797 return pos;
2798}
2799
074d46d1 2800u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
4bf88530 2801 const struct cfg80211_chan_def *chandef,
57f255f5 2802 u16 prot_mode, bool rifs_mode)
42e7aa77 2803{
074d46d1 2804 struct ieee80211_ht_operation *ht_oper;
42e7aa77 2805 /* Build HT Information */
074d46d1
JB		 2806 *pos++ = WLAN_EID_HT_OPERATION;
2807 *pos++ = sizeof(struct ieee80211_ht_operation);
2808 ht_oper = (struct ieee80211_ht_operation *)pos;
4bf88530
JB		 2809 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2810 chandef->chan->center_freq);
2811 switch (chandef->width) {
2812 case NL80211_CHAN_WIDTH_160:
2813 case NL80211_CHAN_WIDTH_80P80:
2814 case NL80211_CHAN_WIDTH_80:
2815 case NL80211_CHAN_WIDTH_40:
2816 if (chandef->center_freq1 > chandef->chan->center_freq)
2817 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2818 else
2819 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
42e7aa77 2820 break;
42e7aa77 2821 default:
074d46d1 2822 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
42e7aa77
AS		 2823 break;
2824 }
aee286c2 2825 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4bf88530
JB		 2826 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2827 chandef->width != NL80211_CHAN_WIDTH_20)
074d46d1 2828 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
ff3cc5f4 2829
57f255f5
AN		 2830 if (rifs_mode)
2831 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2832
431e3154 2833 ht_oper->operation_mode = cpu_to_le16(prot_mode);
074d46d1 2834 ht_oper->stbc_param = 0x0000;
42e7aa77
AS		 2835
2836 /* It seems that Basic MCS set and Supported MCS set
2837 are identical for the first 10 bytes */
074d46d1
JB		 2838 memset(&ht_oper->basic_set, 0, 16);
2839 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
42e7aa77 2840
074d46d1 2841 return pos + sizeof(struct ieee80211_ht_operation);
42e7aa77
AS		 2842}
2843
75d627d5
SW		 2844void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2845 const struct cfg80211_chan_def *chandef)
2846{
2847 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
2848 *pos++ = 3; /* IE length */
2849 /* New channel width */
2850 switch (chandef->width) {
2851 case NL80211_CHAN_WIDTH_80:
2852 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
2853 break;
2854 case NL80211_CHAN_WIDTH_160:
2855 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
2856 break;
2857 case NL80211_CHAN_WIDTH_80P80:
2858 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2859 break;
2860 default:
2861 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
2862 }
2863
2864 /* new center frequency segment 0 */
2865 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
2866 /* new center frequency segment 1 */
2867 if (chandef->center_freq2)
2868 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
2869 else
2870 *pos++ = 0;
2871}
2872
fb28ec0c
AN		 2873u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2874 const struct cfg80211_chan_def *chandef)
2875{
2876 struct ieee80211_vht_operation *vht_oper;
2877
2878 *pos++ = WLAN_EID_VHT_OPERATION;
2879 *pos++ = sizeof(struct ieee80211_vht_operation);
2880 vht_oper = (struct ieee80211_vht_operation *)pos;
2fb51c35 2881 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
fb28ec0c
AN		 2882 chandef->center_freq1);
2883 if (chandef->center_freq2)
2fb51c35 2884 vht_oper->center_freq_seg1_idx =
fb28ec0c 2885 ieee80211_frequency_to_channel(chandef->center_freq2);
f020ae40 2886 else
2fb51c35 2887 vht_oper->center_freq_seg1_idx = 0x00;
fb28ec0c
AN		 2888
2889 switch (chandef->width) {
2890 case NL80211_CHAN_WIDTH_160:
23665aaf
JM		 2891 /*
2892 * Convert 160 MHz channel width to new style as interop
2893 * workaround.
2894 */
2895 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2fb51c35 2896 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
23665aaf 2897 if (chandef->chan->center_freq < chandef->center_freq1)
2fb51c35 2898 vht_oper->center_freq_seg0_idx -= 8;
23665aaf 2899 else
2fb51c35 2900 vht_oper->center_freq_seg0_idx += 8;
fb28ec0c
AN		 2901 break;
2902 case NL80211_CHAN_WIDTH_80P80:
23665aaf
JM		 2903 /*
2904 * Convert 80+80 MHz channel width to new style as interop
2905 * workaround.
2906 */
2907 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
fb28ec0c
AN		 2908 break;
2909 case NL80211_CHAN_WIDTH_80:
2910 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2911 break;
2912 default:
2913 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2914 break;
2915 }
2916
2917 /* don't require special VHT peer rates */
2918 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2919
2920 return pos + sizeof(struct ieee80211_vht_operation);
2921}
2922
60ad72da
SE		 2923u8 *ieee80211_ie_build_he_oper(u8 *pos)
2924{
2925 struct ieee80211_he_operation *he_oper;
2926 u32 he_oper_params;
2927
2928 *pos++ = WLAN_EID_EXTENSION;
2929 *pos++ = 1 + sizeof(struct ieee80211_he_operation);
2930 *pos++ = WLAN_EID_EXT_HE_OPERATION;
2931
2932 he_oper_params = 0;
2933 he_oper_params |= u32_encode_bits(1023, /* disabled */
2934 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
2935 he_oper_params |= u32_encode_bits(1,
2936 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
2937 he_oper_params |= u32_encode_bits(1,
2938 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
2939
2940 he_oper = (struct ieee80211_he_operation *)pos;
2941 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
2942
2943 /* don't require special HE peer rates */
2944 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
2945
2946 /* TODO add VHT operational and 6GHz operational subelement? */
2947
2948 return pos + sizeof(struct ieee80211_vht_operation);
2949}
2950
8ac3c704
JB		 2951bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2952 struct cfg80211_chan_def *chandef)
42e7aa77
AS		 2953{
2954 enum nl80211_channel_type channel_type;
2955
8ac3c704
JB		 2956 if (!ht_oper)
2957 return false;
42e7aa77 2958
074d46d1 2959 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
42e7aa77
AS		 2960 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2961 channel_type = NL80211_CHAN_HT20;
2962 break;
2963 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2964 channel_type = NL80211_CHAN_HT40PLUS;
2965 break;
2966 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2967 channel_type = NL80211_CHAN_HT40MINUS;
2968 break;
2969 default:
2970 channel_type = NL80211_CHAN_NO_HT;
8ac3c704 2971 return false;
42e7aa77
AS		 2972 }
2973
8ac3c704
JB		 2974 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
2975 return true;
42e7aa77
AS		 2976}
2977
7eb26df2
JB		 2978bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw,
2979 const struct ieee80211_vht_operation *oper,
2980 const struct ieee80211_ht_operation *htop,
8ac3c704 2981 struct cfg80211_chan_def *chandef)
abcff6ef 2982{
8ac3c704 2983 struct cfg80211_chan_def new = *chandef;
7eb26df2
JB		 2984 int cf0, cf1;
2985 int ccfs0, ccfs1, ccfs2;
2986 int ccf0, ccf1;
8ac3c704 2987
7eb26df2 2988 if (!oper || !htop)
8ac3c704 2989 return false;
abcff6ef 2990
7eb26df2
JB		 2991 ccfs0 = oper->center_freq_seg0_idx;
2992 ccfs1 = oper->center_freq_seg1_idx;
2993 ccfs2 = (le16_to_cpu(htop->operation_mode) &
2994 IEEE80211_HT_OP_MODE_CCFS2_MASK)
2995 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
2996
2997 /* when parsing (and we know how to) CCFS1 and CCFS2 are equivalent */
2998 ccf0 = ccfs0;
2999 ccf1 = ccfs1;
3000 if (!ccfs1 && ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3001 ccf1 = ccfs2;
3002
3003 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3004 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
abcff6ef
JD		 3005
3006 switch (oper->chan_width) {
3007 case IEEE80211_VHT_CHANWIDTH_USE_HT:
7eb26df2 3008 /* just use HT information directly */
abcff6ef
JD		 3009 break;
3010 case IEEE80211_VHT_CHANWIDTH_80MHZ:
8ac3c704 3011 new.width = NL80211_CHAN_WIDTH_80;
7eb26df2 3012 new.center_freq1 = cf0;
23665aaf 3013 /* If needed, adjust based on the newer interop workaround. */
7eb26df2 3014 if (ccf1) {
23665aaf
JM		 3015 unsigned int diff;
3016
7eb26df2 3017 diff = abs(ccf1 - ccf0);
23665aaf
JM		 3018 if (diff == 8) {
3019 new.width = NL80211_CHAN_WIDTH_160;
7eb26df2 3020 new.center_freq1 = cf1;
23665aaf
JM		 3021 } else if (diff > 8) {
3022 new.width = NL80211_CHAN_WIDTH_80P80;
7eb26df2 3023 new.center_freq2 = cf1;
23665aaf
JM		 3024 }
3025 }
abcff6ef
JD		 3026 break;
3027 case IEEE80211_VHT_CHANWIDTH_160MHZ:
7eb26df2 3028 /* deprecated encoding */
8ac3c704 3029 new.width = NL80211_CHAN_WIDTH_160;
7eb26df2 3030 new.center_freq1 = cf0;
abcff6ef
JD		 3031 break;
3032 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
7eb26df2 3033 /* deprecated encoding */
8ac3c704 3034 new.width = NL80211_CHAN_WIDTH_80P80;
7eb26df2
JB		 3035 new.center_freq1 = cf0;
3036 new.center_freq2 = cf1;
abcff6ef
JD		 3037 break;
3038 default:
8ac3c704 3039 return false;
abcff6ef
JD		 3040 }
3041
8ac3c704
JB		 3042 if (!cfg80211_chandef_valid(&new))
3043 return false;
3044
3045 *chandef = new;
3046 return true;
abcff6ef
JD		 3047}
3048
2103dec1
SW		 3049int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3050 const struct ieee80211_supported_band *sband,
3051 const u8 *srates, int srates_len, u32 *rates)
3052{
3053 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3054 int shift = ieee80211_chandef_get_shift(chandef);
3055 struct ieee80211_rate *br;
3056 int brate, rate, i, j, count = 0;
3057
3058 *rates = 0;
3059
3060 for (i = 0; i < srates_len; i++) {
3061 rate = srates[i] & 0x7f;
3062
3063 for (j = 0; j < sband->n_bitrates; j++) {
3064 br = &sband->bitrates[j];
3065 if ((rate_flags & br->flags) != rate_flags)
3066 continue;
3067
3068 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3069 if (brate == rate) {
3070 *rates |= BIT(j);
3071 count++;
3072 break;
3073 }
3074 }
3075 }
3076 return count;
3077}
3078
fc8a7321 3079int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 3080 struct sk_buff *skb, bool need_basic,
57fbcce3 3081 enum nl80211_band band)
768db343 3082{
768db343
AN		 3083 struct ieee80211_local *local = sdata->local;
3084 struct ieee80211_supported_band *sband;
2103dec1 3085 int rate, shift;
768db343 3086 u8 i, rates, *pos;
fc8a7321 3087 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1 3088 u32 rate_flags;
768db343 3089
2103dec1
SW		 3090 shift = ieee80211_vif_get_shift(&sdata->vif);
3091 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
6b77863b 3092 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 3093 rates = 0;
3094 for (i = 0; i < sband->n_bitrates; i++) {
3095 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3096 continue;
3097 rates++;
3098 }
768db343
AN		 3099 if (rates > 8)
3100 rates = 8;
3101
3102 if (skb_tailroom(skb) < rates + 2)
3103 return -ENOMEM;
3104
3105 pos = skb_put(skb, rates + 2);
3106 *pos++ = WLAN_EID_SUPP_RATES;
3107 *pos++ = rates;
3108 for (i = 0; i < rates; i++) {
657c3e0c 3109 u8 basic = 0;
2103dec1
SW		 3110 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3111 continue;
3112
657c3e0c
AN		 3113 if (need_basic && basic_rates & BIT(i))
3114 basic = 0x80;
2103dec1
SW		 3115 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3116 5 * (1 << shift));
3117 *pos++ = basic | (u8) rate;
768db343
AN		 3118 }
3119
3120 return 0;
3121}
3122
fc8a7321 3123int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 3124 struct sk_buff *skb, bool need_basic,
57fbcce3 3125 enum nl80211_band band)
768db343 3126{
768db343
AN		 3127 struct ieee80211_local *local = sdata->local;
3128 struct ieee80211_supported_band *sband;
cc63ec76 3129 int rate, shift;
768db343 3130 u8 i, exrates, *pos;
fc8a7321 3131 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1
SW		 3132 u32 rate_flags;
3133
3134 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3135 shift = ieee80211_vif_get_shift(&sdata->vif);
768db343 3136
6b77863b 3137 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 3138 exrates = 0;
3139 for (i = 0; i < sband->n_bitrates; i++) {
3140 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3141 continue;
3142 exrates++;
3143 }
3144
768db343
AN		 3145 if (exrates > 8)
3146 exrates -= 8;
3147 else
3148 exrates = 0;
3149
3150 if (skb_tailroom(skb) < exrates + 2)
3151 return -ENOMEM;
3152
3153 if (exrates) {
3154 pos = skb_put(skb, exrates + 2);
3155 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3156 *pos++ = exrates;
3157 for (i = 8; i < sband->n_bitrates; i++) {
657c3e0c 3158 u8 basic = 0;
2103dec1
SW		 3159 if ((rate_flags & sband->bitrates[i].flags)
3160 != rate_flags)
3161 continue;
657c3e0c
AN		 3162 if (need_basic && basic_rates & BIT(i))
3163 basic = 0x80;
2103dec1
SW		 3164 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3165 5 * (1 << shift));
3166 *pos++ = basic | (u8) rate;
768db343
AN		 3167 }
3168 }
3169 return 0;
3170}
1dae27f8
WYG		 3171
3172int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3173{
3174 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3175 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3176
be6bcabc
WYG		 3177 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3178 /* non-managed type inferfaces */
3179 return 0;
3180 }
338c17ae 3181 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
1dae27f8 3182}
0d8a0a17 3183EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
04ecd257
JB		 3184
3185u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3186{
3187 if (!mcs)
3188 return 1;
3189
3190 /* TODO: consider rx_highest */
3191
3192 if (mcs->rx_mask[3])
3193 return 4;
3194 if (mcs->rx_mask[2])
3195 return 3;
3196 if (mcs->rx_mask[1])
3197 return 2;
3198 return 1;
3199}
f4bda337
TP		 3200
3201/**
3202 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3203 * @local: mac80211 hw info struct
3204 * @status: RX status
3205 * @mpdu_len: total MPDU length (including FCS)
3206 * @mpdu_offset: offset into MPDU to calculate timestamp at
3207 *
3208 * This function calculates the RX timestamp at the given MPDU offset, taking
3209 * into account what the RX timestamp was. An offset of 0 will just normalize
3210 * the timestamp to TSF at beginning of MPDU reception.
3211 */
3212u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3213 struct ieee80211_rx_status *status,
3214 unsigned int mpdu_len,
3215 unsigned int mpdu_offset)
3216{
3217 u64 ts = status->mactime;
3218 struct rate_info ri;
3219 u16 rate;
3220
3221 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3222 return 0;
3223
3224 memset(&ri, 0, sizeof(ri));
3225
35f4962c
JB		 3226 ri.bw = status->bw;
3227
f4bda337 3228 /* Fill cfg80211 rate info */
da6a4352
JB		 3229 switch (status->encoding) {
3230 case RX_ENC_HT:
f4bda337
TP		 3231 ri.mcs = status->rate_idx;
3232 ri.flags |= RATE_INFO_FLAGS_MCS;
7fdd69c5 3233 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
f4bda337 3234 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da6a4352
JB		 3235 break;
3236 case RX_ENC_VHT:
5614618e
JB		 3237 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3238 ri.mcs = status->rate_idx;
8613c948 3239 ri.nss = status->nss;
7fdd69c5 3240 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
5614618e 3241 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da6a4352
JB		 3242 break;
3243 default:
3244 WARN_ON(1);
3245 /* fall through */
3246 case RX_ENC_LEGACY: {
f4bda337 3247 struct ieee80211_supported_band *sband;
2103dec1
SW		 3248 int shift = 0;
3249 int bitrate;
3250
da6a4352
JB		 3251 switch (status->bw) {
3252 case RATE_INFO_BW_10:
2103dec1 3253 shift = 1;
da6a4352
JB		 3254 break;
3255 case RATE_INFO_BW_5:
2103dec1 3256 shift = 2;
da6a4352 3257 break;
b51f3bee 3258 }
f4bda337
TP		 3259
3260 sband = local->hw.wiphy->bands[status->band];
2103dec1
SW		 3261 bitrate = sband->bitrates[status->rate_idx].bitrate;
3262 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
f4a0f0c5
JB		 3263
3264 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3265 /* TODO: handle HT/VHT preambles */
57fbcce3 3266 if (status->band == NL80211_BAND_5GHZ) {
f4a0f0c5
JB		 3267 ts += 20 << shift;
3268 mpdu_offset += 2;
7fdd69c5 3269 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
f4a0f0c5
JB		 3270 ts += 96;
3271 } else {
3272 ts += 192;
3273 }
3274 }
da6a4352
JB		 3275 break;
3276 }
f4bda337
TP		 3277 }
3278
3279 rate = cfg80211_calculate_bitrate(&ri);
d86aa4f8 3280 if (WARN_ONCE(!rate,
f980ebc0
SS		 3281 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3282 (unsigned long long)status->flag, status->rate_idx,
8613c948 3283 status->nss))
d86aa4f8 3284 return 0;
f4bda337
TP		 3285
3286 /* rewind from end of MPDU */
3287 if (status->flag & RX_FLAG_MACTIME_END)
3288 ts -= mpdu_len * 8 * 10 / rate;
3289
3290 ts += mpdu_offset * 8 * 10 / rate;
3291
3292 return ts;
3293}
164eb02d
SW		 3294
3295void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3296{
3297 struct ieee80211_sub_if_data *sdata;
d2859df5 3298 struct cfg80211_chan_def chandef;
164eb02d 3299
4a199068
JB		 3300 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3301 ASSERT_RTNL();
3302
34a3740d 3303 mutex_lock(&local->mtx);
164eb02d 3304 list_for_each_entry(sdata, &local->interfaces, list) {
34a3740d
JB		 3305 /* it might be waiting for the local->mtx, but then
3306 * by the time it gets it, sdata->wdev.cac_started
3307 * will no longer be true
3308 */
3309 cancel_delayed_work(&sdata->dfs_cac_timer_work);
164eb02d
SW		 3310
3311 if (sdata->wdev.cac_started) {
d2859df5 3312 chandef = sdata->vif.bss_conf.chandef;
164eb02d
SW		 3313 ieee80211_vif_release_channel(sdata);
3314 cfg80211_cac_event(sdata->dev,
d2859df5 3315 &chandef,
164eb02d
SW		 3316 NL80211_RADAR_CAC_ABORTED,
3317 GFP_KERNEL);
3318 }
3319 }
34a3740d 3320 mutex_unlock(&local->mtx);
164eb02d
SW		 3321}
3322
3323void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3324{
3325 struct ieee80211_local *local =
3326 container_of(work, struct ieee80211_local, radar_detected_work);
84a3d1c9 3327 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
486cf4c0
MK		 3328 struct ieee80211_chanctx *ctx;
3329 int num_chanctx = 0;
3330
3331 mutex_lock(&local->chanctx_mtx);
3332 list_for_each_entry(ctx, &local->chanctx_list, list) {
3333 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3334 continue;
3335
3336 num_chanctx++;
3337 chandef = ctx->conf.def;
3338 }
3339 mutex_unlock(&local->chanctx_mtx);
164eb02d 3340
4a199068 3341 rtnl_lock();
164eb02d 3342 ieee80211_dfs_cac_cancel(local);
4a199068 3343 rtnl_unlock();
164eb02d 3344
486cf4c0
MK		 3345 if (num_chanctx > 1)
3346 /* XXX: multi-channel is not supported yet */
164eb02d 3347 WARN_ON(1);
84a3d1c9 3348 else
164eb02d 3349 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
164eb02d
SW		 3350}
3351
3352void ieee80211_radar_detected(struct ieee80211_hw *hw)
3353{
3354 struct ieee80211_local *local = hw_to_local(hw);
3355
3356 trace_api_radar_detected(local);
3357
4a199068 3358 schedule_work(&local->radar_detected_work);
164eb02d
SW		 3359}
3360EXPORT_SYMBOL(ieee80211_radar_detected);
e6b7cde4
SW		 3361
3362u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3363{
3364 u32 ret;
3365 int tmp;
3366
3367 switch (c->width) {
3368 case NL80211_CHAN_WIDTH_20:
3369 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3370 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3371 break;
3372 case NL80211_CHAN_WIDTH_40:
3373 c->width = NL80211_CHAN_WIDTH_20;
3374 c->center_freq1 = c->chan->center_freq;
3375 ret = IEEE80211_STA_DISABLE_40MHZ |
3376 IEEE80211_STA_DISABLE_VHT;
3377 break;
3378 case NL80211_CHAN_WIDTH_80:
3379 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3380 /* n_P40 */
3381 tmp /= 2;
3382 /* freq_P40 */
3383 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3384 c->width = NL80211_CHAN_WIDTH_40;
3385 ret = IEEE80211_STA_DISABLE_VHT;
3386 break;
3387 case NL80211_CHAN_WIDTH_80P80:
3388 c->center_freq2 = 0;
3389 c->width = NL80211_CHAN_WIDTH_80;
3390 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3391 IEEE80211_STA_DISABLE_160MHZ;
3392 break;
3393 case NL80211_CHAN_WIDTH_160:
3394 /* n_P20 */
3395 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3396 /* n_P80 */
3397 tmp /= 4;
3398 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3399 c->width = NL80211_CHAN_WIDTH_80;
3400 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3401 IEEE80211_STA_DISABLE_160MHZ;
3402 break;
3403 default:
3404 case NL80211_CHAN_WIDTH_20_NOHT:
3405 WARN_ON_ONCE(1);
3406 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3407 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3408 break;
3409 case NL80211_CHAN_WIDTH_5:
3410 case NL80211_CHAN_WIDTH_10:
3411 WARN_ON_ONCE(1);
3412 /* keep c->width */
3413 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3414 break;
3415 }
3416
3417 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3418
3419 return ret;
3420}
687da132
EG		 3421
3422/*
3423 * Returns true if smps_mode_new is strictly more restrictive than
3424 * smps_mode_old.
3425 */
3426bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3427 enum ieee80211_smps_mode smps_mode_new)
3428{
3429 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3430 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3431 return false;
3432
3433 switch (smps_mode_old) {
3434 case IEEE80211_SMPS_STATIC:
3435 return false;
3436 case IEEE80211_SMPS_DYNAMIC:
3437 return smps_mode_new == IEEE80211_SMPS_STATIC;
3438 case IEEE80211_SMPS_OFF:
3439 return smps_mode_new != IEEE80211_SMPS_OFF;
3440 default:
3441 WARN_ON(1);
3442 }
3443
3444 return false;
3445}
c6da674a
CYY		 3446
3447int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3448 struct cfg80211_csa_settings *csa_settings)
3449{
3450 struct sk_buff *skb;
3451 struct ieee80211_mgmt *mgmt;
3452 struct ieee80211_local *local = sdata->local;
3453 int freq;
4c121fd6
JB		 3454 int hdr_len = offsetofend(struct ieee80211_mgmt,
3455 u.action.u.chan_switch);
c6da674a
CYY		 3456 u8 *pos;
3457
3458 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3459 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3460 return -EOPNOTSUPP;
3461
3462 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3463 5 + /* channel switch announcement element */
3464 3 + /* secondary channel offset element */
75d627d5 3465 5 + /* wide bandwidth channel switch announcement */
c6da674a
CYY		 3466 8); /* mesh channel switch parameters element */
3467 if (!skb)
3468 return -ENOMEM;
3469
3470 skb_reserve(skb, local->tx_headroom);
b080db58 3471 mgmt = skb_put_zero(skb, hdr_len);
c6da674a
CYY		 3472 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3473 IEEE80211_STYPE_ACTION);
3474
3475 eth_broadcast_addr(mgmt->da);
3476 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3477 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3478 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3479 } else {
3480 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3481 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3482 }
3483 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3484 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3485 pos = skb_put(skb, 5);
3486 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3487 *pos++ = 3; /* IE length */
3488 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3489 freq = csa_settings->chandef.chan->center_freq;
3490 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3491 *pos++ = csa_settings->count; /* count */
3492
3493 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3494 enum nl80211_channel_type ch_type;
3495
3496 skb_put(skb, 3);
3497 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3498 *pos++ = 1; /* IE length */
3499 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3500 if (ch_type == NL80211_CHAN_HT40PLUS)
3501 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3502 else
3503 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3504 }
3505
3506 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3507 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
c6da674a
CYY		 3508
3509 skb_put(skb, 8);
3510 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3511 *pos++ = 6; /* IE length */
3512 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3513 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3514 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3515 *pos++ |= csa_settings->block_tx ?
3516 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3517 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3518 pos += 2;
ca91dc97 3519 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
c6da674a 3520 pos += 2;
c6da674a
CYY		 3521 }
3522
75d627d5
SW		 3523 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3524 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3525 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3526 skb_put(skb, 5);
3527 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3528 }
3529
c6da674a
CYY		 3530 ieee80211_tx_skb(sdata, skb);
3531 return 0;
3532}
2475b1cc
MS		 3533
3534bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3535{
3536 return !(cs == NULL || cs->cipher == 0 ||
3537 cs->hdr_len < cs->pn_len + cs->pn_off ||
3538 cs->hdr_len <= cs->key_idx_off ||
3539 cs->key_idx_shift > 7 ||
3540 cs->key_idx_mask == 0);
3541}
3542
3543bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
3544{
3545 int i;
3546
3547 /* Ensure we have enough iftype bitmap space for all iftype values */
3548 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
3549
3550 for (i = 0; i < n; i++)
3551 if (!ieee80211_cs_valid(&cs[i]))
3552 return false;
3553
3554 return true;
3555}
3556
3557const struct ieee80211_cipher_scheme *
3558ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
3559 enum nl80211_iftype iftype)
3560{
3561 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
3562 int n = local->hw.n_cipher_schemes;
3563 int i;
3564 const struct ieee80211_cipher_scheme *cs = NULL;
3565
3566 for (i = 0; i < n; i++) {
3567 if (l[i].cipher == cipher) {
3568 cs = &l[i];
3569 break;
3570 }
3571 }
3572
3573 if (!cs || !(cs->iftype & BIT(iftype)))
3574 return NULL;
3575
3576 return cs;
3577}
3578
3579int ieee80211_cs_headroom(struct ieee80211_local *local,
3580 struct cfg80211_crypto_settings *crypto,
3581 enum nl80211_iftype iftype)
3582{
3583 const struct ieee80211_cipher_scheme *cs;
3584 int headroom = IEEE80211_ENCRYPT_HEADROOM;
3585 int i;
3586
3587 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
3588 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
3589 iftype);
3590
3591 if (cs && headroom < cs->hdr_len)
3592 headroom = cs->hdr_len;
3593 }
3594
3595 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
3596 if (cs && headroom < cs->hdr_len)
3597 headroom = cs->hdr_len;
3598
3599 return headroom;
3600}
a7022e65
FF		 3601
3602static bool
3603ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3604{
3605 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3606 int skip;
3607
3608 if (end > 0)
3609 return false;
3610
519ee691
JD		 3611 /* One shot NOA */
3612 if (data->count[i] == 1)
3613 return false;
3614
3615 if (data->desc[i].interval == 0)
3616 return false;
3617
a7022e65
FF		 3618 /* End time is in the past, check for repetitions */
3619 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3620 if (data->count[i] < 255) {
3621 if (data->count[i] <= skip) {
3622 data->count[i] = 0;
3623 return false;
3624 }
3625
3626 data->count[i] -= skip;
3627 }
3628
3629 data->desc[i].start += skip * data->desc[i].interval;
3630
3631 return true;
3632}
3633
3634static bool
3635ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3636 s32 *offset)
3637{
3638 bool ret = false;
3639 int i;
3640
3641 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3642 s32 cur;
3643
3644 if (!data->count[i])
3645 continue;
3646
3647 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3648 ret = true;
3649
3650 cur = data->desc[i].start - tsf;
3651 if (cur > *offset)
3652 continue;
3653
3654 cur = data->desc[i].start + data->desc[i].duration - tsf;
3655 if (cur > *offset)
3656 *offset = cur;
3657 }
3658
3659 return ret;
3660}
3661
3662static u32
3663ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3664{
3665 s32 offset = 0;
3666 int tries = 0;
3667 /*
3668 * arbitrary limit, used to avoid infinite loops when combined NoA
3669 * descriptors cover the full time period.
3670 */
3671 int max_tries = 5;
3672
3673 ieee80211_extend_absent_time(data, tsf, &offset);
3674 do {
3675 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3676 break;
3677
3678 tries++;
3679 } while (tries < max_tries);
3680
3681 return offset;
3682}
3683
3684void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3685{
3686 u32 next_offset = BIT(31) - 1;
3687 int i;
3688
3689 data->absent = 0;
3690 data->has_next_tsf = false;
3691 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3692 s32 start;
3693
3694 if (!data->count[i])
3695 continue;
3696
3697 ieee80211_extend_noa_desc(data, tsf, i);
3698 start = data->desc[i].start - tsf;
3699 if (start <= 0)
3700 data->absent |= BIT(i);
3701
3702 if (next_offset > start)
3703 next_offset = start;
3704
3705 data->has_next_tsf = true;
3706 }
3707
3708 if (data->absent)
3709 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3710
3711 data->next_tsf = tsf + next_offset;
3712}
3713EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3714
3715int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3716 struct ieee80211_noa_data *data, u32 tsf)
3717{
3718 int ret = 0;
3719 int i;
3720
3721 memset(data, 0, sizeof(*data));
3722
3723 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3724 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3725
3726 if (!desc->count || !desc->duration)
3727 continue;
3728
3729 data->count[i] = desc->count;
3730 data->desc[i].start = le32_to_cpu(desc->start_time);
3731 data->desc[i].duration = le32_to_cpu(desc->duration);
3732 data->desc[i].interval = le32_to_cpu(desc->interval);
3733
3734 if (data->count[i] > 1 &&
3735 data->desc[i].interval < data->desc[i].duration)
3736 continue;
3737
3738 ieee80211_extend_noa_desc(data, tsf, i);
3739 ret++;
3740 }
3741
3742 if (ret)
3743 ieee80211_update_p2p_noa(data, tsf);
3744
3745 return ret;
3746}
3747EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
057d5f4b
TP		 3748
3749void ieee80211_recalc_dtim(struct ieee80211_local *local,
3750 struct ieee80211_sub_if_data *sdata)
3751{
3752 u64 tsf = drv_get_tsf(local, sdata);
3753 u64 dtim_count = 0;
3754 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3755 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3756 struct ps_data *ps;
3757 u8 bcns_from_dtim;
3758
3759 if (tsf == -1ULL || !beacon_int || !dtim_period)
3760 return;
3761
3762 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3763 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3764 if (!sdata->bss)
3765 return;
3766
3767 ps = &sdata->bss->ps;
3768 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3769 ps = &sdata->u.mesh.ps;
3770 } else {
3771 return;
3772 }
3773
3774 /*
3775 * actually finds last dtim_count, mac80211 will update in
3776 * __beacon_add_tim().
3777 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3778 */
3779 do_div(tsf, beacon_int);
3780 bcns_from_dtim = do_div(tsf, dtim_period);
3781 /* just had a DTIM */
3782 if (!bcns_from_dtim)
3783 dtim_count = 0;
3784 else
3785 dtim_count = dtim_period - bcns_from_dtim;
3786
3787 ps->dtim_count = dtim_count;
3788}
73de86a3 3789
71e6195e
MK		 3790static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3791 struct ieee80211_chanctx *ctx)
3792{
3793 struct ieee80211_sub_if_data *sdata;
3794 u8 radar_detect = 0;
3795
3796 lockdep_assert_held(&local->chanctx_mtx);
3797
3798 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3799 return 0;
3800
3801 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
3802 if (sdata->reserved_radar_required)
3803 radar_detect |= BIT(sdata->reserved_chandef.width);
3804
3805 /*
3806 * An in-place reservation context should not have any assigned vifs
3807 * until it replaces the other context.
3808 */
3809 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
3810 !list_empty(&ctx->assigned_vifs));
3811
3812 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
3813 if (sdata->radar_required)
3814 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
3815
3816 return radar_detect;
3817}
3818
73de86a3
LC		 3819int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
3820 const struct cfg80211_chan_def *chandef,
3821 enum ieee80211_chanctx_mode chanmode,
3822 u8 radar_detect)
3823{
3824 struct ieee80211_local *local = sdata->local;
3825 struct ieee80211_sub_if_data *sdata_iter;
3826 enum nl80211_iftype iftype = sdata->wdev.iftype;
73de86a3 3827 struct ieee80211_chanctx *ctx;
73de86a3 3828 int total = 1;
e227300c
PK		 3829 struct iface_combination_params params = {
3830 .radar_detect = radar_detect,
3831 };
73de86a3
LC		 3832
3833 lockdep_assert_held(&local->chanctx_mtx);
3834
3835 if (WARN_ON(hweight32(radar_detect) > 1))
3836 return -EINVAL;
3837
b6a55015
LC		 3838 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
3839 !chandef->chan))
73de86a3
LC		 3840 return -EINVAL;
3841
3842 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
3843 return -EINVAL;
3844
ac668afe
JB		 3845 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3846 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
3847 /*
3848 * always passing this is harmless, since it'll be the
3849 * same value that cfg80211 finds if it finds the same
3850 * interface ... and that's always allowed
3851 */
3852 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
3853 }
3854
73de86a3 3855 /* Always allow software iftypes */
e6f40511 3856 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
73de86a3
LC		 3857 if (radar_detect)
3858 return -EINVAL;
3859 return 0;
3860 }
3861
e227300c
PK		 3862 if (chandef)
3863 params.num_different_channels = 1;
73de86a3
LC		 3864
3865 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
e227300c 3866 params.iftype_num[iftype] = 1;
73de86a3
LC		 3867
3868 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3869 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3870 continue;
e227300c
PK		 3871 params.radar_detect |=
3872 ieee80211_chanctx_radar_detect(local, ctx);
73de86a3 3873 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
e227300c 3874 params.num_different_channels++;
73de86a3
LC		 3875 continue;
3876 }
b6a55015 3877 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
73de86a3
LC		 3878 cfg80211_chandef_compatible(chandef,
3879 &ctx->conf.def))
3880 continue;
e227300c 3881 params.num_different_channels++;
73de86a3
LC		 3882 }
3883
3884 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
3885 struct wireless_dev *wdev_iter;
3886
3887 wdev_iter = &sdata_iter->wdev;
3888
3889 if (sdata_iter == sdata ||
0f611d28 3890 !ieee80211_sdata_running(sdata_iter) ||
e6f40511
MP		 3891 cfg80211_iftype_allowed(local->hw.wiphy,
3892 wdev_iter->iftype, 0, 1))
73de86a3
LC		 3893 continue;
3894
e227300c 3895 params.iftype_num[wdev_iter->iftype]++;
73de86a3
LC		 3896 total++;
3897 }
3898
e227300c 3899 if (total == 1 && !params.radar_detect)
73de86a3
LC		 3900 return 0;
3901
e227300c 3902 return cfg80211_check_combinations(local->hw.wiphy, &params);
73de86a3 3903}
6fa001bc
MK		 3904
3905static void
3906ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
3907 void *data)
3908{
3909 u32 *max_num_different_channels = data;
3910
3911 *max_num_different_channels = max(*max_num_different_channels,
3912 c->num_different_channels);
3913}
3914
3915int ieee80211_max_num_channels(struct ieee80211_local *local)
3916{
3917 struct ieee80211_sub_if_data *sdata;
6fa001bc 3918 struct ieee80211_chanctx *ctx;
6fa001bc
MK		 3919 u32 max_num_different_channels = 1;
3920 int err;
e227300c 3921 struct iface_combination_params params = {0};
6fa001bc
MK		 3922
3923 lockdep_assert_held(&local->chanctx_mtx);
3924
3925 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3926 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3927 continue;
3928
e227300c 3929 params.num_different_channels++;
6fa001bc 3930
e227300c
PK		 3931 params.radar_detect |=
3932 ieee80211_chanctx_radar_detect(local, ctx);
6fa001bc
MK		 3933 }
3934
3935 list_for_each_entry_rcu(sdata, &local->interfaces, list)
e227300c 3936 params.iftype_num[sdata->wdev.iftype]++;
6fa001bc 3937
e227300c
PK		 3938 err = cfg80211_iter_combinations(local->hw.wiphy, &params,
3939 ieee80211_iter_max_chans,
6fa001bc
MK		 3940 &max_num_different_channels);
3941 if (err < 0)
3942 return err;
3943
3944 return max_num_different_channels;
3945}
40b861a0
AN		 3946
3947u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
3948{
3949 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
3950 *buf++ = 7; /* len */
3951 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
3952 *buf++ = 0x50;
3953 *buf++ = 0xf2;
3954 *buf++ = 2; /* WME */
3955 *buf++ = 0; /* WME info */
3956 *buf++ = 1; /* WME ver */
3957 *buf++ = qosinfo; /* U-APSD no in use */
3958
3959 return buf;
3960}
ba8c3d6f 3961
f2ac7e30
MK		 3962void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
3963 unsigned long *frame_cnt,
3964 unsigned long *byte_cnt)
3965{
3966 struct txq_info *txqi = to_txq_info(txq);
bb42f2d1
THJ		 3967 u32 frag_cnt = 0, frag_bytes = 0;
3968 struct sk_buff *skb;
3969
3970 skb_queue_walk(&txqi->frags, skb) {
3971 frag_cnt++;
3972 frag_bytes += skb->len;
3973 }
f2ac7e30
MK		 3974
3975 if (frame_cnt)
bb42f2d1 3976 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
f2ac7e30
MK		 3977
3978 if (byte_cnt)
bb42f2d1 3979 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
f2ac7e30
MK		 3980}
3981EXPORT_SYMBOL(ieee80211_txq_get_depth);
f438ceb8
EG		 3982
3983const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
3984 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
3985 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
3986 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
3987 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
3988};
Linux 6.x block layer and io_uring tree(s)