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mac80211: don't reconfigure sched scan in case of wowlan
[mirror_ubuntu-artful-kernel.git] / net / mac80211 / util.c
CommitLineData
c2d1560a
JB		 1/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
d98ad83e 6 * Copyright 2013-2014 Intel Mobile Communications GmbH
43d6df00 7 * Copyright (C) 2015 Intel Deutschland GmbH
c2d1560a
JB		 8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * utilities for mac80211
14 */
15
16#include <net/mac80211.h>
17#include <linux/netdevice.h>
bc3b2d7f 18#include <linux/export.h>
c2d1560a
JB		 19#include <linux/types.h>
20#include <linux/slab.h>
21#include <linux/skbuff.h>
22#include <linux/etherdevice.h>
23#include <linux/if_arp.h>
c2d1560a 24#include <linux/bitmap.h>
dd76986b 25#include <linux/crc32.h>
881d966b 26#include <net/net_namespace.h>
c2d1560a 27#include <net/cfg80211.h>
dabeb344 28#include <net/rtnetlink.h>
c2d1560a
JB		 29
30#include "ieee80211_i.h"
24487981 31#include "driver-ops.h"
2c8dccc7 32#include "rate.h"
ee385855 33#include "mesh.h"
c2d1560a 34#include "wme.h"
f2753ddb 35#include "led.h"
fffd0934 36#include "wep.h"
c2d1560a
JB		 37
38/* privid for wiphys to determine whether they belong to us or not */
8a47cea7 39const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
c2d1560a 40
9a95371a
LR		 41struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
42{
43 struct ieee80211_local *local;
44 BUG_ON(!wiphy);
45
46 local = wiphy_priv(wiphy);
47 return &local->hw;
48}
49EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
c2d1560a 50
5cf121c3 51void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
c2d1560a 52{
252b86c4 53 struct sk_buff *skb;
2de8e0d9
JB		 54 struct ieee80211_hdr *hdr;
55
252b86c4 56 skb_queue_walk(&tx->skbs, skb) {
2de8e0d9
JB		 57 hdr = (struct ieee80211_hdr *) skb->data;
58 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
252b86c4 59 }
c2d1560a
JB		 60}
61
4ee73f33 62int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
438b61b7
SW		 63 int rate, int erp, int short_preamble,
64 int shift)
c2d1560a
JB		 65{
66 int dur;
67
68 /* calculate duration (in microseconds, rounded up to next higher
69 * integer if it includes a fractional microsecond) to send frame of
70 * len bytes (does not include FCS) at the given rate. Duration will
71 * also include SIFS.
72 *
73 * rate is in 100 kbps, so divident is multiplied by 10 in the
74 * DIV_ROUND_UP() operations.
438b61b7
SW		 75 *
76 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
77 * is assumed to be 0 otherwise.
c2d1560a
JB		 78 */
79
4ee73f33 80 if (band == IEEE80211_BAND_5GHZ || erp) {
c2d1560a
JB		 81 /*
82 * OFDM:
83 *
84 * N_DBPS = DATARATE x 4
85 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
86 * (16 = SIGNAL time, 6 = tail bits)
87 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
88 *
89 * T_SYM = 4 usec
438b61b7 90 * 802.11a - 18.5.2: aSIFSTime = 16 usec
c2d1560a
JB		 91 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
92 * signal ext = 6 usec
93 */
c2d1560a 94 dur = 16; /* SIFS + signal ext */
438b61b7
SW		 95 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
96 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
438b61b7
SW		 97
98 /* IEEE 802.11-2012 18.3.2.4: all values above are:
99 * * times 4 for 5 MHz
100 * * times 2 for 10 MHz
101 */
102 dur *= 1 << shift;
2103dec1
SW		 103
104 /* rates should already consider the channel bandwidth,
105 * don't apply divisor again.
106 */
107 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
108 4 * rate); /* T_SYM x N_SYM */
c2d1560a
JB		 109 } else {
110 /*
111 * 802.11b or 802.11g with 802.11b compatibility:
112 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
113 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
114 *
115 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
116 * aSIFSTime = 10 usec
117 * aPreambleLength = 144 usec or 72 usec with short preamble
118 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
119 */
120 dur = 10; /* aSIFSTime = 10 usec */
121 dur += short_preamble ? (72 + 24) : (144 + 48);
122
123 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
124 }
125
126 return dur;
127}
128
129/* Exported duration function for driver use */
32bfd35d
JB		 130__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
131 struct ieee80211_vif *vif,
4ee73f33 132 enum ieee80211_band band,
8318d78a
JB		 133 size_t frame_len,
134 struct ieee80211_rate *rate)
c2d1560a 135{
25d834e1 136 struct ieee80211_sub_if_data *sdata;
c2d1560a 137 u16 dur;
438b61b7 138 int erp, shift = 0;
25d834e1 139 bool short_preamble = false;
c2d1560a 140
8318d78a 141 erp = 0;
25d834e1
JB		 142 if (vif) {
143 sdata = vif_to_sdata(vif);
bda3933a 144 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 145 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
146 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 147 shift = ieee80211_vif_get_shift(vif);
25d834e1 148 }
8318d78a 149
4ee73f33 150 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
438b61b7 151 short_preamble, shift);
c2d1560a
JB		 152
153 return cpu_to_le16(dur);
154}
155EXPORT_SYMBOL(ieee80211_generic_frame_duration);
156
32bfd35d
JB		 157__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
158 struct ieee80211_vif *vif, size_t frame_len,
e039fa4a 159 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 160{
161 struct ieee80211_local *local = hw_to_local(hw);
162 struct ieee80211_rate *rate;
25d834e1 163 struct ieee80211_sub_if_data *sdata;
471b3efd 164 bool short_preamble;
2103dec1 165 int erp, shift = 0, bitrate;
c2d1560a 166 u16 dur;
2e92e6f2
JB		 167 struct ieee80211_supported_band *sband;
168
4ee73f33 169 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 170
25d834e1 171 short_preamble = false;
7e9ed188 172
e039fa4a 173 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a
JB		 174
175 erp = 0;
25d834e1
JB		 176 if (vif) {
177 sdata = vif_to_sdata(vif);
bda3933a 178 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 179 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
180 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 181 shift = ieee80211_vif_get_shift(vif);
25d834e1 182 }
c2d1560a 183
2103dec1
SW		 184 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
185
c2d1560a 186 /* CTS duration */
2103dec1 187 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 188 erp, short_preamble, shift);
c2d1560a 189 /* Data frame duration */
2103dec1 190 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 191 erp, short_preamble, shift);
c2d1560a 192 /* ACK duration */
2103dec1 193 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 194 erp, short_preamble, shift);
c2d1560a
JB		 195
196 return cpu_to_le16(dur);
197}
198EXPORT_SYMBOL(ieee80211_rts_duration);
199
32bfd35d
JB		 200__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
201 struct ieee80211_vif *vif,
c2d1560a 202 size_t frame_len,
e039fa4a 203 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 204{
205 struct ieee80211_local *local = hw_to_local(hw);
206 struct ieee80211_rate *rate;
25d834e1 207 struct ieee80211_sub_if_data *sdata;
471b3efd 208 bool short_preamble;
2103dec1 209 int erp, shift = 0, bitrate;
c2d1560a 210 u16 dur;
2e92e6f2
JB		 211 struct ieee80211_supported_band *sband;
212
4ee73f33 213 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 214
25d834e1 215 short_preamble = false;
7e9ed188 216
e039fa4a 217 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a 218 erp = 0;
25d834e1
JB		 219 if (vif) {
220 sdata = vif_to_sdata(vif);
bda3933a 221 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 222 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
223 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 224 shift = ieee80211_vif_get_shift(vif);
25d834e1 225 }
c2d1560a 226
2103dec1
SW		 227 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
228
c2d1560a 229 /* Data frame duration */
2103dec1 230 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 231 erp, short_preamble, shift);
e039fa4a 232 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
c2d1560a 233 /* ACK duration */
2103dec1 234 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 235 erp, short_preamble, shift);
c2d1560a
JB		 236 }
237
238 return cpu_to_le16(dur);
239}
240EXPORT_SYMBOL(ieee80211_ctstoself_duration);
241
3a25a8c8
JB		 242void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
243{
244 struct ieee80211_sub_if_data *sdata;
a6f38ac3
JB		 245 int n_acs = IEEE80211_NUM_ACS;
246
247 if (local->hw.queues < IEEE80211_NUM_ACS)
248 n_acs = 1;
3a25a8c8
JB		 249
250 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
251 int ac;
252
f142c6b9
JB		 253 if (!sdata->dev)
254 continue;
255
3a25a8c8
JB		 256 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
257 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
258 continue;
259
a6f38ac3 260 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 261 int ac_queue = sdata->vif.hw_queue[ac];
262
ba8c3d6f
FF		 263 if (local->ops->wake_tx_queue &&
264 (atomic_read(&sdata->txqs_len[ac]) >
265 local->hw.txq_ac_max_pending))
266 continue;
267
3a25a8c8
JB		 268 if (ac_queue == queue ||
269 (sdata->vif.cab_queue == queue &&
270 local->queue_stop_reasons[ac_queue] == 0 &&
271 skb_queue_empty(&local->pending[ac_queue])))
272 netif_wake_subqueue(sdata->dev, ac);
273 }
274 }
275}
276
ce7c9111 277static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 278 enum queue_stop_reason reason,
279 bool refcounted)
c2d1560a
JB		 280{
281 struct ieee80211_local *local = hw_to_local(hw);
282
b5878a2d
JB		 283 trace_wake_queue(local, queue, reason);
284
e4e72fb4
JB		 285 if (WARN_ON(queue >= hw->queues))
286 return;
ce7c9111 287
ada15125
JB		 288 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
289 return;
290
cca07b00
LC		 291 if (!refcounted)
292 local->q_stop_reasons[queue][reason] = 0;
293 else
294 local->q_stop_reasons[queue][reason]--;
295
296 if (local->q_stop_reasons[queue][reason] == 0)
297 __clear_bit(reason, &local->queue_stop_reasons[queue]);
96f5e66e
JB		 298
299 if (local->queue_stop_reasons[queue] != 0)
300 /* someone still has this queue stopped */
301 return;
302
7236fe29
JB		 303 if (skb_queue_empty(&local->pending[queue])) {
304 rcu_read_lock();
3a25a8c8 305 ieee80211_propagate_queue_wake(local, queue);
7236fe29
JB		 306 rcu_read_unlock();
307 } else
3b8d81e0 308 tasklet_schedule(&local->tx_pending_tasklet);
c2d1560a 309}
ce7c9111 310
96f5e66e 311void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 312 enum queue_stop_reason reason,
313 bool refcounted)
ce7c9111
KV		 314{
315 struct ieee80211_local *local = hw_to_local(hw);
316 unsigned long flags;
317
318 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 319 __ieee80211_wake_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 320 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
321}
322
323void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
324{
325 ieee80211_wake_queue_by_reason(hw, queue,
cca07b00
LC		 326 IEEE80211_QUEUE_STOP_REASON_DRIVER,
327 false);
ce7c9111 328}
c2d1560a
JB		 329EXPORT_SYMBOL(ieee80211_wake_queue);
330
ce7c9111 331static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 332 enum queue_stop_reason reason,
333 bool refcounted)
c2d1560a
JB		 334{
335 struct ieee80211_local *local = hw_to_local(hw);
cf0277e7 336 struct ieee80211_sub_if_data *sdata;
a6f38ac3 337 int n_acs = IEEE80211_NUM_ACS;
c2d1560a 338
b5878a2d
JB		 339 trace_stop_queue(local, queue, reason);
340
e4e72fb4
JB		 341 if (WARN_ON(queue >= hw->queues))
342 return;
96f5e66e 343
cca07b00
LC		 344 if (!refcounted)
345 local->q_stop_reasons[queue][reason] = 1;
346 else
347 local->q_stop_reasons[queue][reason]++;
ada15125 348
cca07b00
LC		 349 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
350 return;
cf0277e7 351
a6f38ac3
JB		 352 if (local->hw.queues < IEEE80211_NUM_ACS)
353 n_acs = 1;
354
cf0277e7 355 rcu_read_lock();
3a25a8c8
JB		 356 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
357 int ac;
358
f142c6b9
JB		 359 if (!sdata->dev)
360 continue;
361
a6f38ac3 362 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 363 if (sdata->vif.hw_queue[ac] == queue ||
364 sdata->vif.cab_queue == queue)
365 netif_stop_subqueue(sdata->dev, ac);
366 }
367 }
cf0277e7 368 rcu_read_unlock();
c2d1560a 369}
ce7c9111 370
96f5e66e 371void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 372 enum queue_stop_reason reason,
373 bool refcounted)
ce7c9111
KV		 374{
375 struct ieee80211_local *local = hw_to_local(hw);
376 unsigned long flags;
377
378 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 379 __ieee80211_stop_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 380 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
381}
382
383void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
384{
385 ieee80211_stop_queue_by_reason(hw, queue,
cca07b00
LC		 386 IEEE80211_QUEUE_STOP_REASON_DRIVER,
387 false);
ce7c9111 388}
c2d1560a
JB		 389EXPORT_SYMBOL(ieee80211_stop_queue);
390
8f77f384
JB		 391void ieee80211_add_pending_skb(struct ieee80211_local *local,
392 struct sk_buff *skb)
393{
394 struct ieee80211_hw *hw = &local->hw;
395 unsigned long flags;
a7bc376c 396 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
3a25a8c8 397 int queue = info->hw_queue;
a7bc376c
JB		 398
399 if (WARN_ON(!info->control.vif)) {
d4fa14cd 400 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 401 return;
402 }
8f77f384
JB		 403
404 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00
LC		 405 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
406 false);
3b8d81e0 407 __skb_queue_tail(&local->pending[queue], skb);
cca07b00
LC		 408 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
409 false);
8f77f384
JB		 410 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
411}
412
e3685e03
JB		 413void ieee80211_add_pending_skbs(struct ieee80211_local *local,
414 struct sk_buff_head *skbs)
8f77f384
JB		 415{
416 struct ieee80211_hw *hw = &local->hw;
417 struct sk_buff *skb;
418 unsigned long flags;
b0b97a8a 419 int queue, i;
8f77f384
JB		 420
421 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
8f77f384 422 while ((skb = skb_dequeue(skbs))) {
a7bc376c
JB		 423 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
424
425 if (WARN_ON(!info->control.vif)) {
d4fa14cd 426 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 427 continue;
428 }
429
3a25a8c8 430 queue = info->hw_queue;
4644ae89
JB		 431
432 __ieee80211_stop_queue(hw, queue,
cca07b00
LC		 433 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
434 false);
4644ae89 435
3b8d81e0 436 __skb_queue_tail(&local->pending[queue], skb);
8f77f384
JB		 437 }
438
3b8d81e0 439 for (i = 0; i < hw->queues; i++)
8f77f384 440 __ieee80211_wake_queue(hw, i,
cca07b00
LC		 441 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
442 false);
8f77f384 443 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
8f77f384
JB		 444}
445
ce7c9111 446void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 447 unsigned long queues,
cca07b00
LC		 448 enum queue_stop_reason reason,
449 bool refcounted)
c2d1560a 450{
ce7c9111
KV		 451 struct ieee80211_local *local = hw_to_local(hw);
452 unsigned long flags;
c2d1560a
JB		 453 int i;
454
ce7c9111
KV		 455 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
456
445ea4e8 457 for_each_set_bit(i, &queues, hw->queues)
cca07b00 458 __ieee80211_stop_queue(hw, i, reason, refcounted);
ce7c9111
KV		 459
460 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
461}
462
463void ieee80211_stop_queues(struct ieee80211_hw *hw)
464{
445ea4e8 465 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 466 IEEE80211_QUEUE_STOP_REASON_DRIVER,
467 false);
c2d1560a
JB		 468}
469EXPORT_SYMBOL(ieee80211_stop_queues);
470
92ab8535
TW		 471int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
472{
473 struct ieee80211_local *local = hw_to_local(hw);
3b8d81e0
JB		 474 unsigned long flags;
475 int ret;
96f5e66e 476
e4e72fb4
JB		 477 if (WARN_ON(queue >= hw->queues))
478 return true;
96f5e66e 479
3b8d81e0 480 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
2419ea14
TP		 481 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
482 &local->queue_stop_reasons[queue]);
3b8d81e0
JB		 483 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
484 return ret;
92ab8535
TW		 485}
486EXPORT_SYMBOL(ieee80211_queue_stopped);
487
ce7c9111 488void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 489 unsigned long queues,
cca07b00
LC		 490 enum queue_stop_reason reason,
491 bool refcounted)
c2d1560a 492{
ce7c9111
KV		 493 struct ieee80211_local *local = hw_to_local(hw);
494 unsigned long flags;
c2d1560a
JB		 495 int i;
496
ce7c9111
KV		 497 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
498
445ea4e8 499 for_each_set_bit(i, &queues, hw->queues)
cca07b00 500 __ieee80211_wake_queue(hw, i, reason, refcounted);
ce7c9111
KV		 501
502 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
503}
504
505void ieee80211_wake_queues(struct ieee80211_hw *hw)
506{
445ea4e8 507 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 508 IEEE80211_QUEUE_STOP_REASON_DRIVER,
509 false);
c2d1560a
JB		 510}
511EXPORT_SYMBOL(ieee80211_wake_queues);
dabeb344 512
26da23b6
LC		 513static unsigned int
514ieee80211_get_vif_queues(struct ieee80211_local *local,
515 struct ieee80211_sub_if_data *sdata)
39ecc01d 516{
26da23b6 517 unsigned int queues;
39ecc01d 518
30686bf7 519 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
39ecc01d
JB		 520 int ac;
521
522 queues = 0;
523
524 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
525 queues |= BIT(sdata->vif.hw_queue[ac]);
526 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
527 queues |= BIT(sdata->vif.cab_queue);
528 } else {
529 /* all queues */
530 queues = BIT(local->hw.queues) - 1;
531 }
532
26da23b6
LC		 533 return queues;
534}
535
4f9610d5
LK		 536void __ieee80211_flush_queues(struct ieee80211_local *local,
537 struct ieee80211_sub_if_data *sdata,
3b24f4c6 538 unsigned int queues, bool drop)
26da23b6 539{
26da23b6
LC		 540 if (!local->ops->flush)
541 return;
542
4f9610d5
LK		 543 /*
544 * If no queue was set, or if the HW doesn't support
545 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
546 */
30686bf7 547 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
4f9610d5 548 queues = ieee80211_get_vif_queues(local, sdata);
26da23b6 549
59f48fe2 550 ieee80211_stop_queues_by_reason(&local->hw, queues,
cca07b00
LC		 551 IEEE80211_QUEUE_STOP_REASON_FLUSH,
552 false);
445ea4e8 553
3b24f4c6 554 drv_flush(local, sdata, queues, drop);
445ea4e8 555
59f48fe2 556 ieee80211_wake_queues_by_reason(&local->hw, queues,
cca07b00
LC		 557 IEEE80211_QUEUE_STOP_REASON_FLUSH,
558 false);
39ecc01d
JB		 559}
560
4f9610d5 561void ieee80211_flush_queues(struct ieee80211_local *local,
3b24f4c6 562 struct ieee80211_sub_if_data *sdata, bool drop)
4f9610d5 563{
3b24f4c6 564 __ieee80211_flush_queues(local, sdata, 0, drop);
4f9610d5
LK		 565}
566
26da23b6
LC		 567void ieee80211_stop_vif_queues(struct ieee80211_local *local,
568 struct ieee80211_sub_if_data *sdata,
569 enum queue_stop_reason reason)
570{
571 ieee80211_stop_queues_by_reason(&local->hw,
572 ieee80211_get_vif_queues(local, sdata),
573 reason, true);
574}
575
576void ieee80211_wake_vif_queues(struct ieee80211_local *local,
577 struct ieee80211_sub_if_data *sdata,
578 enum queue_stop_reason reason)
579{
580 ieee80211_wake_queues_by_reason(&local->hw,
581 ieee80211_get_vif_queues(local, sdata),
582 reason, true);
583}
584
3384d757
AN		 585static void __iterate_interfaces(struct ieee80211_local *local,
586 u32 iter_flags,
587 void (*iterator)(void *data, u8 *mac,
588 struct ieee80211_vif *vif),
589 void *data)
dabeb344 590{
dabeb344 591 struct ieee80211_sub_if_data *sdata;
3384d757 592 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
dabeb344 593
c7c71066 594 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
2f561feb 595 switch (sdata->vif.type) {
05c914fe 596 case NL80211_IFTYPE_MONITOR:
31eba5bc
FF		 597 if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))
598 continue;
599 break;
05c914fe 600 case NL80211_IFTYPE_AP_VLAN:
2f561feb 601 continue;
2ca27bcf 602 default:
2f561feb
ID		 603 break;
604 }
8b2c9824 605 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
3384d757 606 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
8b2c9824 607 continue;
3384d757 608 if (ieee80211_sdata_running(sdata) || !active_only)
47846c9b 609 iterator(data, sdata->vif.addr,
2f561feb
ID		 610 &sdata->vif);
611 }
612
c7c71066
JB		 613 sdata = rcu_dereference_check(local->monitor_sdata,
614 lockdep_is_held(&local->iflist_mtx) ||
615 lockdep_rtnl_is_held());
8b2c9824 616 if (sdata &&
3384d757 617 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
8b2c9824 618 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
685fb72b 619 iterator(data, sdata->vif.addr, &sdata->vif);
c7c71066 620}
685fb72b 621
3384d757 622void ieee80211_iterate_interfaces(
c7c71066
JB		 623 struct ieee80211_hw *hw, u32 iter_flags,
624 void (*iterator)(void *data, u8 *mac,
625 struct ieee80211_vif *vif),
626 void *data)
627{
628 struct ieee80211_local *local = hw_to_local(hw);
629
630 mutex_lock(&local->iflist_mtx);
3384d757 631 __iterate_interfaces(local, iter_flags, iterator, data);
c771c9d8 632 mutex_unlock(&local->iflist_mtx);
2f561feb 633}
3384d757 634EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
2f561feb
ID		 635
636void ieee80211_iterate_active_interfaces_atomic(
8b2c9824 637 struct ieee80211_hw *hw, u32 iter_flags,
2f561feb
ID		 638 void (*iterator)(void *data, u8 *mac,
639 struct ieee80211_vif *vif),
640 void *data)
641{
642 struct ieee80211_local *local = hw_to_local(hw);
2f561feb 643
e38bad47 644 rcu_read_lock();
3384d757
AN		 645 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
646 iterator, data);
c7c71066
JB		 647 rcu_read_unlock();
648}
649EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
dabeb344 650
c7c71066
JB		 651void ieee80211_iterate_active_interfaces_rtnl(
652 struct ieee80211_hw *hw, u32 iter_flags,
653 void (*iterator)(void *data, u8 *mac,
654 struct ieee80211_vif *vif),
655 void *data)
656{
657 struct ieee80211_local *local = hw_to_local(hw);
e38bad47 658
c7c71066 659 ASSERT_RTNL();
685fb72b 660
3384d757
AN		 661 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
662 iterator, data);
dabeb344 663}
c7c71066 664EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
37ffc8da 665
0fc1e049
AN		 666static void __iterate_stations(struct ieee80211_local *local,
667 void (*iterator)(void *data,
668 struct ieee80211_sta *sta),
669 void *data)
670{
671 struct sta_info *sta;
672
673 list_for_each_entry_rcu(sta, &local->sta_list, list) {
674 if (!sta->uploaded)
675 continue;
676
677 iterator(data, &sta->sta);
678 }
679}
680
681void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
682 void (*iterator)(void *data,
683 struct ieee80211_sta *sta),
684 void *data)
685{
686 struct ieee80211_local *local = hw_to_local(hw);
687
688 rcu_read_lock();
689 __iterate_stations(local, iterator, data);
690 rcu_read_unlock();
691}
692EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
693
ad7e718c
JB		 694struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
695{
696 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
697
698 if (!ieee80211_sdata_running(sdata) ||
699 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
700 return NULL;
701 return &sdata->vif;
702}
703EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
704
dc5a1ad7
EG		 705struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
706{
6513e98e
JB		 707 struct ieee80211_sub_if_data *sdata;
708
709 if (!vif)
710 return NULL;
711
712 sdata = vif_to_sdata(vif);
dc5a1ad7
EG		 713
714 if (!ieee80211_sdata_running(sdata) ||
715 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
716 return NULL;
717
718 return &sdata->wdev;
719}
720EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
721
42935eca
LR		 722/*
723 * Nothing should have been stuffed into the workqueue during
4afaff17
EG		 724 * the suspend->resume cycle. Since we can't check each caller
725 * of this function if we are already quiescing / suspended,
726 * check here and don't WARN since this can actually happen when
727 * the rx path (for example) is racing against __ieee80211_suspend
728 * and suspending / quiescing was set after the rx path checked
729 * them.
42935eca
LR		 730 */
731static bool ieee80211_can_queue_work(struct ieee80211_local *local)
732{
4afaff17
EG		 733 if (local->quiescing || (local->suspended && !local->resuming)) {
734 pr_warn("queueing ieee80211 work while going to suspend\n");
ceb99fe0 735 return false;
4afaff17 736 }
42935eca
LR		 737
738 return true;
739}
740
741void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
742{
743 struct ieee80211_local *local = hw_to_local(hw);
744
745 if (!ieee80211_can_queue_work(local))
746 return;
747
748 queue_work(local->workqueue, work);
749}
750EXPORT_SYMBOL(ieee80211_queue_work);
751
752void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
753 struct delayed_work *dwork,
754 unsigned long delay)
755{
756 struct ieee80211_local *local = hw_to_local(hw);
757
758 if (!ieee80211_can_queue_work(local))
759 return;
760
761 queue_delayed_work(local->workqueue, dwork, delay);
762}
763EXPORT_SYMBOL(ieee80211_queue_delayed_work);
764
35d865af 765u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
dd76986b
JB		 766 struct ieee802_11_elems *elems,
767 u64 filter, u32 crc)
768{
769 size_t left = len;
35d865af 770 const u8 *pos = start;
dd76986b 771 bool calc_crc = filter != 0;
fcff4f10 772 DECLARE_BITMAP(seen_elems, 256);
b2e506bf 773 const u8 *ie;
dd76986b 774
fcff4f10 775 bitmap_zero(seen_elems, 256);
dd76986b
JB		 776 memset(elems, 0, sizeof(*elems));
777 elems->ie_start = start;
778 elems->total_len = len;
779
780 while (left >= 2) {
781 u8 id, elen;
fcff4f10 782 bool elem_parse_failed;
dd76986b
JB		 783
784 id = *pos++;
785 elen = *pos++;
786 left -= 2;
787
fcff4f10
PS		 788 if (elen > left) {
789 elems->parse_error = true;
dd76986b 790 break;
fcff4f10
PS		 791 }
792
9690fb16
JB		 793 switch (id) {
794 case WLAN_EID_SSID:
795 case WLAN_EID_SUPP_RATES:
796 case WLAN_EID_FH_PARAMS:
797 case WLAN_EID_DS_PARAMS:
798 case WLAN_EID_CF_PARAMS:
799 case WLAN_EID_TIM:
800 case WLAN_EID_IBSS_PARAMS:
801 case WLAN_EID_CHALLENGE:
802 case WLAN_EID_RSN:
803 case WLAN_EID_ERP_INFO:
804 case WLAN_EID_EXT_SUPP_RATES:
805 case WLAN_EID_HT_CAPABILITY:
806 case WLAN_EID_HT_OPERATION:
807 case WLAN_EID_VHT_CAPABILITY:
808 case WLAN_EID_VHT_OPERATION:
809 case WLAN_EID_MESH_ID:
810 case WLAN_EID_MESH_CONFIG:
811 case WLAN_EID_PEER_MGMT:
812 case WLAN_EID_PREQ:
813 case WLAN_EID_PREP:
814 case WLAN_EID_PERR:
815 case WLAN_EID_RANN:
816 case WLAN_EID_CHANNEL_SWITCH:
817 case WLAN_EID_EXT_CHANSWITCH_ANN:
818 case WLAN_EID_COUNTRY:
819 case WLAN_EID_PWR_CONSTRAINT:
820 case WLAN_EID_TIMEOUT_INTERVAL:
85220d71 821 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
b2e506bf 822 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
8f2535b9 823 case WLAN_EID_CHAN_SWITCH_PARAM:
9041c1fa 824 case WLAN_EID_EXT_CAPABILITY:
53837584
AN		 825 case WLAN_EID_CHAN_SWITCH_TIMING:
826 case WLAN_EID_LINK_ID:
b2e506bf
JB		 827 /*
828 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
829 * that if the content gets bigger it might be needed more than once
830 */
9690fb16
JB		 831 if (test_bit(id, seen_elems)) {
832 elems->parse_error = true;
833 left -= elen;
834 pos += elen;
835 continue;
836 }
837 break;
fcff4f10 838 }
dd76986b
JB		 839
840 if (calc_crc && id < 64 && (filter & (1ULL << id)))
841 crc = crc32_be(crc, pos - 2, elen + 2);
842
fcff4f10
PS		 843 elem_parse_failed = false;
844
dd76986b 845 switch (id) {
53837584
AN		 846 case WLAN_EID_LINK_ID:
847 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
848 elem_parse_failed = true;
849 break;
850 }
851 elems->lnk_id = (void *)(pos - 2);
852 break;
853 case WLAN_EID_CHAN_SWITCH_TIMING:
854 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
855 elem_parse_failed = true;
856 break;
857 }
858 elems->ch_sw_timing = (void *)pos;
859 break;
9041c1fa
AN		 860 case WLAN_EID_EXT_CAPABILITY:
861 elems->ext_capab = pos;
862 elems->ext_capab_len = elen;
863 break;
dd76986b
JB		 864 case WLAN_EID_SSID:
865 elems->ssid = pos;
866 elems->ssid_len = elen;
867 break;
868 case WLAN_EID_SUPP_RATES:
869 elems->supp_rates = pos;
870 elems->supp_rates_len = elen;
871 break;
dd76986b 872 case WLAN_EID_DS_PARAMS:
1cd8e88e
JB		 873 if (elen >= 1)
874 elems->ds_params = pos;
875 else
876 elem_parse_failed = true;
dd76986b 877 break;
dd76986b
JB		 878 case WLAN_EID_TIM:
879 if (elen >= sizeof(struct ieee80211_tim_ie)) {
880 elems->tim = (void *)pos;
881 elems->tim_len = elen;
fcff4f10
PS		 882 } else
883 elem_parse_failed = true;
dd76986b 884 break;
dd76986b
JB		 885 case WLAN_EID_CHALLENGE:
886 elems->challenge = pos;
887 elems->challenge_len = elen;
888 break;
889 case WLAN_EID_VENDOR_SPECIFIC:
890 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
891 pos[2] == 0xf2) {
892 /* Microsoft OUI (00:50:F2) */
893
894 if (calc_crc)
895 crc = crc32_be(crc, pos - 2, elen + 2);
896
441a33ba 897 if (elen >= 5 && pos[3] == 2) {
dd76986b
JB		 898 /* OUI Type 2 - WMM IE */
899 if (pos[4] == 0) {
900 elems->wmm_info = pos;
901 elems->wmm_info_len = elen;
902 } else if (pos[4] == 1) {
903 elems->wmm_param = pos;
904 elems->wmm_param_len = elen;
905 }
906 }
907 }
908 break;
909 case WLAN_EID_RSN:
910 elems->rsn = pos;
911 elems->rsn_len = elen;
912 break;
913 case WLAN_EID_ERP_INFO:
1946bed9
JB		 914 if (elen >= 1)
915 elems->erp_info = pos;
916 else
917 elem_parse_failed = true;
dd76986b
JB		 918 break;
919 case WLAN_EID_EXT_SUPP_RATES:
920 elems->ext_supp_rates = pos;
921 elems->ext_supp_rates_len = elen;
922 break;
923 case WLAN_EID_HT_CAPABILITY:
924 if (elen >= sizeof(struct ieee80211_ht_cap))
925 elems->ht_cap_elem = (void *)pos;
fcff4f10
PS		 926 else
927 elem_parse_failed = true;
dd76986b 928 break;
074d46d1
JB		 929 case WLAN_EID_HT_OPERATION:
930 if (elen >= sizeof(struct ieee80211_ht_operation))
931 elems->ht_operation = (void *)pos;
fcff4f10
PS		 932 else
933 elem_parse_failed = true;
dd76986b 934 break;
818255ea
MP		 935 case WLAN_EID_VHT_CAPABILITY:
936 if (elen >= sizeof(struct ieee80211_vht_cap))
937 elems->vht_cap_elem = (void *)pos;
938 else
939 elem_parse_failed = true;
940 break;
941 case WLAN_EID_VHT_OPERATION:
942 if (elen >= sizeof(struct ieee80211_vht_operation))
943 elems->vht_operation = (void *)pos;
944 else
945 elem_parse_failed = true;
946 break;
bee7f586
JB		 947 case WLAN_EID_OPMODE_NOTIF:
948 if (elen > 0)
949 elems->opmode_notif = pos;
950 else
951 elem_parse_failed = true;
952 break;
dd76986b
JB		 953 case WLAN_EID_MESH_ID:
954 elems->mesh_id = pos;
955 elems->mesh_id_len = elen;
956 break;
957 case WLAN_EID_MESH_CONFIG:
958 if (elen >= sizeof(struct ieee80211_meshconf_ie))
959 elems->mesh_config = (void *)pos;
fcff4f10
PS		 960 else
961 elem_parse_failed = true;
dd76986b
JB		 962 break;
963 case WLAN_EID_PEER_MGMT:
964 elems->peering = pos;
965 elems->peering_len = elen;
966 break;
3f52b7e3
MP		 967 case WLAN_EID_MESH_AWAKE_WINDOW:
968 if (elen >= 2)
969 elems->awake_window = (void *)pos;
970 break;
dd76986b
JB		 971 case WLAN_EID_PREQ:
972 elems->preq = pos;
973 elems->preq_len = elen;
974 break;
975 case WLAN_EID_PREP:
976 elems->prep = pos;
977 elems->prep_len = elen;
978 break;
979 case WLAN_EID_PERR:
980 elems->perr = pos;
981 elems->perr_len = elen;
982 break;
983 case WLAN_EID_RANN:
984 if (elen >= sizeof(struct ieee80211_rann_ie))
985 elems->rann = (void *)pos;
fcff4f10
PS		 986 else
987 elem_parse_failed = true;
dd76986b
JB		 988 break;
989 case WLAN_EID_CHANNEL_SWITCH:
5bc1420b
JB		 990 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
991 elem_parse_failed = true;
992 break;
993 }
994 elems->ch_switch_ie = (void *)pos;
dd76986b 995 break;
b4f286a1
JB		 996 case WLAN_EID_EXT_CHANSWITCH_ANN:
997 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
998 elem_parse_failed = true;
999 break;
1000 }
1001 elems->ext_chansw_ie = (void *)pos;
1002 break;
85220d71
JB		 1003 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1004 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1005 elem_parse_failed = true;
1006 break;
1007 }
1008 elems->sec_chan_offs = (void *)pos;
1009 break;
8f2535b9
CYY		 1010 case WLAN_EID_CHAN_SWITCH_PARAM:
1011 if (elen !=
1012 sizeof(*elems->mesh_chansw_params_ie)) {
1013 elem_parse_failed = true;
1014 break;
1015 }
1016 elems->mesh_chansw_params_ie = (void *)pos;
1017 break;
b2e506bf
JB		 1018 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1019 if (!action ||
1020 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1021 elem_parse_failed = true;
1022 break;
1023 }
1024 elems->wide_bw_chansw_ie = (void *)pos;
1025 break;
1026 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1027 if (action) {
1028 elem_parse_failed = true;
1029 break;
1030 }
1031 /*
1032 * This is a bit tricky, but as we only care about
1033 * the wide bandwidth channel switch element, so
1034 * just parse it out manually.
1035 */
1036 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1037 pos, elen);
1038 if (ie) {
1039 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1040 elems->wide_bw_chansw_ie =
1041 (void *)(ie + 2);
1042 else
1043 elem_parse_failed = true;
1044 }
1045 break;
dd76986b
JB		 1046 case WLAN_EID_COUNTRY:
1047 elems->country_elem = pos;
1048 elems->country_elem_len = elen;
1049 break;
1050 case WLAN_EID_PWR_CONSTRAINT:
761a48d2
JB		 1051 if (elen != 1) {
1052 elem_parse_failed = true;
1053 break;
1054 }
dd76986b 1055 elems->pwr_constr_elem = pos;
dd76986b 1056 break;
c8d65917
SG		 1057 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1058 /* Lots of different options exist, but we only care
1059 * about the Dynamic Transmit Power Control element.
1060 * First check for the Cisco OUI, then for the DTPC
1061 * tag (0x00).
1062 */
1063 if (elen < 4) {
1064 elem_parse_failed = true;
1065 break;
1066 }
1067
1068 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1069 pos[2] != 0x96 || pos[3] != 0x00)
1070 break;
1071
1072 if (elen != 6) {
1073 elem_parse_failed = true;
1074 break;
1075 }
1076
1077 if (calc_crc)
1078 crc = crc32_be(crc, pos - 2, elen + 2);
1079
1080 elems->cisco_dtpc_elem = pos;
1081 break;
dd76986b 1082 case WLAN_EID_TIMEOUT_INTERVAL:
79ba1d89
JB		 1083 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1084 elems->timeout_int = (void *)pos;
1085 else
1086 elem_parse_failed = true;
dd76986b
JB		 1087 break;
1088 default:
1089 break;
1090 }
1091
fcff4f10
PS		 1092 if (elem_parse_failed)
1093 elems->parse_error = true;
1094 else
5df45690 1095 __set_bit(id, seen_elems);
fcff4f10 1096
dd76986b
JB		 1097 left -= elen;
1098 pos += elen;
1099 }
1100
fcff4f10
PS		 1101 if (left != 0)
1102 elems->parse_error = true;
1103
dd76986b
JB		 1104 return crc;
1105}
1106
3abead59
JB		 1107void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1108 bool bss_notify)
5825fe10
JB		 1109{
1110 struct ieee80211_local *local = sdata->local;
1111 struct ieee80211_tx_queue_params qparam;
55de908a 1112 struct ieee80211_chanctx_conf *chanctx_conf;
54bcbc69 1113 int ac;
a8ce8544 1114 bool use_11b, enable_qos;
239281f8 1115 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
aa837e1d 1116 int aCWmin, aCWmax;
5825fe10
JB		 1117
1118 if (!local->ops->conf_tx)
1119 return;
1120
54bcbc69
JB		 1121 if (local->hw.queues < IEEE80211_NUM_ACS)
1122 return;
1123
5825fe10
JB		 1124 memset(&qparam, 0, sizeof(qparam));
1125
55de908a
JB		 1126 rcu_read_lock();
1127 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1128 use_11b = (chanctx_conf &&
4bf88530 1129 chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) &&
aa837e1d 1130 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
55de908a 1131 rcu_read_unlock();
5825fe10 1132
a8ce8544
SG		 1133 /*
1134 * By default disable QoS in STA mode for old access points, which do
1135 * not support 802.11e. New APs will provide proper queue parameters,
1136 * that we will configure later.
1137 */
1138 enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION);
1139
239281f8
RL		 1140 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1141
1f4ffde8
FZ		 1142 /* Set defaults according to 802.11-2007 Table 7-37 */
1143 aCWmax = 1023;
1144 if (use_11b)
1145 aCWmin = 31;
1146 else
1147 aCWmin = 15;
1148
1149 /* Confiure old 802.11b/g medium access rules. */
1150 qparam.cw_max = aCWmax;
1151 qparam.cw_min = aCWmin;
1152 qparam.txop = 0;
1153 qparam.aifs = 2;
aa837e1d 1154
1f4ffde8
FZ		 1155 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1156 /* Update if QoS is enabled. */
a8ce8544
SG		 1157 if (enable_qos) {
1158 switch (ac) {
1159 case IEEE80211_AC_BK:
1160 qparam.cw_max = aCWmax;
1161 qparam.cw_min = aCWmin;
1162 qparam.txop = 0;
239281f8
RL		 1163 if (is_ocb)
1164 qparam.aifs = 9;
1165 else
1166 qparam.aifs = 7;
a8ce8544
SG		 1167 break;
1168 /* never happens but let's not leave undefined */
1169 default:
1170 case IEEE80211_AC_BE:
1171 qparam.cw_max = aCWmax;
1172 qparam.cw_min = aCWmin;
1173 qparam.txop = 0;
239281f8
RL		 1174 if (is_ocb)
1175 qparam.aifs = 6;
1176 else
1177 qparam.aifs = 3;
a8ce8544
SG		 1178 break;
1179 case IEEE80211_AC_VI:
1180 qparam.cw_max = aCWmin;
1181 qparam.cw_min = (aCWmin + 1) / 2 - 1;
239281f8
RL		 1182 if (is_ocb)
1183 qparam.txop = 0;
1184 else if (use_11b)
a8ce8544
SG		 1185 qparam.txop = 6016/32;
1186 else
1187 qparam.txop = 3008/32;
239281f8
RL		 1188
1189 if (is_ocb)
1190 qparam.aifs = 3;
1191 else
1192 qparam.aifs = 2;
a8ce8544
SG		 1193 break;
1194 case IEEE80211_AC_VO:
1195 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1196 qparam.cw_min = (aCWmin + 1) / 4 - 1;
239281f8
RL		 1197 if (is_ocb)
1198 qparam.txop = 0;
1199 else if (use_11b)
a8ce8544
SG		 1200 qparam.txop = 3264/32;
1201 else
1202 qparam.txop = 1504/32;
1203 qparam.aifs = 2;
1204 break;
1205 }
aa837e1d 1206 }
5825fe10 1207
ab13315a
KV		 1208 qparam.uapsd = false;
1209
54bcbc69
JB		 1210 sdata->tx_conf[ac] = qparam;
1211 drv_conf_tx(local, sdata, ac, &qparam);
aa837e1d 1212 }
e1b3ec1a 1213
f142c6b9
JB		 1214 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1215 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) {
a8ce8544 1216 sdata->vif.bss_conf.qos = enable_qos;
3abead59
JB		 1217 if (bss_notify)
1218 ieee80211_bss_info_change_notify(sdata,
1219 BSS_CHANGED_QOS);
d9734979 1220 }
5825fe10 1221}
e50db65c 1222
46900298 1223void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
700e8ea6 1224 u16 transaction, u16 auth_alg, u16 status,
4a3cb702 1225 const u8 *extra, size_t extra_len, const u8 *da,
1672c0e3
JB		 1226 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1227 u32 tx_flags)
46900298
JB		 1228{
1229 struct ieee80211_local *local = sdata->local;
1230 struct sk_buff *skb;
1231 struct ieee80211_mgmt *mgmt;
fffd0934 1232 int err;
46900298 1233
15e230ab 1234 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
744462a9
MS		 1235 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1236 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
d15b8459 1237 if (!skb)
46900298 1238 return;
d15b8459 1239
744462a9 1240 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
46900298
JB		 1241
1242 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
1243 memset(mgmt, 0, 24 + 6);
1244 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1245 IEEE80211_STYPE_AUTH);
efa6a09d 1246 memcpy(mgmt->da, da, ETH_ALEN);
47846c9b 1247 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
46900298
JB		 1248 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1249 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1250 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
700e8ea6 1251 mgmt->u.auth.status_code = cpu_to_le16(status);
46900298
JB		 1252 if (extra)
1253 memcpy(skb_put(skb, extra_len), extra, extra_len);
46900298 1254
fffd0934
JB		 1255 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1256 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1257 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1258 WARN_ON(err);
1259 }
1260
1672c0e3
JB		 1261 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1262 tx_flags;
62ae67be 1263 ieee80211_tx_skb(sdata, skb);
46900298
JB		 1264}
1265
6ae16775
AQ		 1266void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1267 const u8 *bssid, u16 stype, u16 reason,
1268 bool send_frame, u8 *frame_buf)
1269{
1270 struct ieee80211_local *local = sdata->local;
1271 struct sk_buff *skb;
1272 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1273
1274 /* build frame */
1275 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1276 mgmt->duration = 0; /* initialize only */
1277 mgmt->seq_ctrl = 0; /* initialize only */
1278 memcpy(mgmt->da, bssid, ETH_ALEN);
1279 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1280 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1281 /* u.deauth.reason_code == u.disassoc.reason_code */
1282 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1283
1284 if (send_frame) {
1285 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1286 IEEE80211_DEAUTH_FRAME_LEN);
1287 if (!skb)
1288 return;
1289
1290 skb_reserve(skb, local->hw.extra_tx_headroom);
1291
1292 /* copy in frame */
1293 memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN),
1294 mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1295
1296 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1297 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1298 IEEE80211_SKB_CB(skb)->flags |=
1299 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1300
1301 ieee80211_tx_skb(sdata, skb);
1302 }
1303}
1304
c56ef672
DS		 1305static int ieee80211_build_preq_ies_band(struct ieee80211_local *local,
1306 u8 *buffer, size_t buffer_len,
1307 const u8 *ie, size_t ie_len,
1308 enum ieee80211_band band,
1309 u32 rate_mask,
1310 struct cfg80211_chan_def *chandef,
1311 size_t *offset)
de95a54b
JB		 1312{
1313 struct ieee80211_supported_band *sband;
c604b9f2 1314 u8 *pos = buffer, *end = buffer + buffer_len;
c56ef672 1315 size_t noffset;
8e664fb3 1316 int supp_rates_len, i;
8dcb2003
JM		 1317 u8 rates[32];
1318 int num_rates;
1319 int ext_rates_len;
2103dec1
SW		 1320 int shift;
1321 u32 rate_flags;
40a11ca8 1322 bool have_80mhz = false;
de95a54b 1323
c56ef672
DS		 1324 *offset = 0;
1325
4d36ec58 1326 sband = local->hw.wiphy->bands[band];
d811b3d5
AN		 1327 if (WARN_ON_ONCE(!sband))
1328 return 0;
de95a54b 1329
2103dec1
SW		 1330 rate_flags = ieee80211_chandef_rate_flags(chandef);
1331 shift = ieee80211_chandef_get_shift(chandef);
1332
8dcb2003
JM		 1333 num_rates = 0;
1334 for (i = 0; i < sband->n_bitrates; i++) {
1335 if ((BIT(i) & rate_mask) == 0)
1336 continue; /* skip rate */
2103dec1
SW		 1337 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1338 continue;
1339
1340 rates[num_rates++] =
1341 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1342 (1 << shift) * 5);
8dcb2003
JM		 1343 }
1344
1345 supp_rates_len = min_t(int, num_rates, 8);
8e664fb3 1346
c604b9f2
JB		 1347 if (end - pos < 2 + supp_rates_len)
1348 goto out_err;
de95a54b 1349 *pos++ = WLAN_EID_SUPP_RATES;
8e664fb3 1350 *pos++ = supp_rates_len;
8dcb2003
JM		 1351 memcpy(pos, rates, supp_rates_len);
1352 pos += supp_rates_len;
8e664fb3
JB		 1353
1354 /* insert "request information" if in custom IEs */
1355 if (ie && ie_len) {
1356 static const u8 before_extrates[] = {
1357 WLAN_EID_SSID,
1358 WLAN_EID_SUPP_RATES,
1359 WLAN_EID_REQUEST,
1360 };
1361 noffset = ieee80211_ie_split(ie, ie_len,
1362 before_extrates,
1363 ARRAY_SIZE(before_extrates),
c56ef672
DS		 1364 *offset);
1365 if (end - pos < noffset - *offset)
c604b9f2 1366 goto out_err;
c56ef672
DS		 1367 memcpy(pos, ie + *offset, noffset - *offset);
1368 pos += noffset - *offset;
1369 *offset = noffset;
8e664fb3
JB		 1370 }
1371
8dcb2003
JM		 1372 ext_rates_len = num_rates - supp_rates_len;
1373 if (ext_rates_len > 0) {
c604b9f2
JB		 1374 if (end - pos < 2 + ext_rates_len)
1375 goto out_err;
8e664fb3 1376 *pos++ = WLAN_EID_EXT_SUPP_RATES;
8dcb2003
JM		 1377 *pos++ = ext_rates_len;
1378 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1379 pos += ext_rates_len;
8e664fb3
JB		 1380 }
1381
2103dec1 1382 if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) {
c604b9f2
JB		 1383 if (end - pos < 3)
1384 goto out_err;
651b5225
JM		 1385 *pos++ = WLAN_EID_DS_PARAMS;
1386 *pos++ = 1;
2103dec1
SW		 1387 *pos++ = ieee80211_frequency_to_channel(
1388 chandef->chan->center_freq);
651b5225
JM		 1389 }
1390
8e664fb3
JB		 1391 /* insert custom IEs that go before HT */
1392 if (ie && ie_len) {
1393 static const u8 before_ht[] = {
1394 WLAN_EID_SSID,
1395 WLAN_EID_SUPP_RATES,
1396 WLAN_EID_REQUEST,
1397 WLAN_EID_EXT_SUPP_RATES,
1398 WLAN_EID_DS_PARAMS,
1399 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1400 };
1401 noffset = ieee80211_ie_split(ie, ie_len,
1402 before_ht, ARRAY_SIZE(before_ht),
c56ef672
DS		 1403 *offset);
1404 if (end - pos < noffset - *offset)
c604b9f2 1405 goto out_err;
c56ef672
DS		 1406 memcpy(pos, ie + *offset, noffset - *offset);
1407 pos += noffset - *offset;
1408 *offset = noffset;
de95a54b
JB		 1409 }
1410
c604b9f2
JB		 1411 if (sband->ht_cap.ht_supported) {
1412 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1413 goto out_err;
ef96a842
BG		 1414 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1415 sband->ht_cap.cap);
c604b9f2 1416 }
5ef2d41a 1417
de95a54b
JB		 1418 /*
1419 * If adding more here, adjust code in main.c
1420 * that calculates local->scan_ies_len.
1421 */
1422
4d952300 1423 /* insert custom IEs that go before VHT */
8e664fb3 1424 if (ie && ie_len) {
4d952300
JB		 1425 static const u8 before_vht[] = {
1426 WLAN_EID_SSID,
1427 WLAN_EID_SUPP_RATES,
1428 WLAN_EID_REQUEST,
1429 WLAN_EID_EXT_SUPP_RATES,
1430 WLAN_EID_DS_PARAMS,
1431 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1432 WLAN_EID_HT_CAPABILITY,
1433 WLAN_EID_BSS_COEX_2040,
1434 WLAN_EID_EXT_CAPABILITY,
1435 WLAN_EID_SSID_LIST,
1436 WLAN_EID_CHANNEL_USAGE,
1437 WLAN_EID_INTERWORKING,
1438 /* mesh ID can't happen here */
1439 /* 60 GHz can't happen here right now */
1440 };
1441 noffset = ieee80211_ie_split(ie, ie_len,
1442 before_vht, ARRAY_SIZE(before_vht),
c56ef672
DS		 1443 *offset);
1444 if (end - pos < noffset - *offset)
c604b9f2 1445 goto out_err;
c56ef672
DS		 1446 memcpy(pos, ie + *offset, noffset - *offset);
1447 pos += noffset - *offset;
1448 *offset = noffset;
de95a54b
JB		 1449 }
1450
40a11ca8
JB		 1451 /* Check if any channel in this sband supports at least 80 MHz */
1452 for (i = 0; i < sband->n_channels; i++) {
fa44b988
AN		 1453 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1454 IEEE80211_CHAN_NO_80MHZ))
1455 continue;
1456
1457 have_80mhz = true;
1458 break;
40a11ca8
JB		 1459 }
1460
1461 if (sband->vht_cap.vht_supported && have_80mhz) {
c604b9f2
JB		 1462 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1463 goto out_err;
ba0afa2f
MP		 1464 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1465 sband->vht_cap.cap);
c604b9f2 1466 }
ba0afa2f 1467
c604b9f2
JB		 1468 return pos - buffer;
1469 out_err:
1470 WARN_ONCE(1, "not enough space for preq IEs\n");
de95a54b
JB		 1471 return pos - buffer;
1472}
1473
c56ef672
DS		 1474int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1475 size_t buffer_len,
1476 struct ieee80211_scan_ies *ie_desc,
1477 const u8 *ie, size_t ie_len,
1478 u8 bands_used, u32 *rate_masks,
1479 struct cfg80211_chan_def *chandef)
1480{
1481 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1482 int i;
1483
1484 memset(ie_desc, 0, sizeof(*ie_desc));
1485
1486 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
1487 if (bands_used & BIT(i)) {
1488 pos += ieee80211_build_preq_ies_band(local,
1489 buffer + pos,
1490 buffer_len - pos,
1491 ie, ie_len, i,
1492 rate_masks[i],
1493 chandef,
1494 &custom_ie_offset);
1495 ie_desc->ies[i] = buffer + old_pos;
1496 ie_desc->len[i] = pos - old_pos;
1497 old_pos = pos;
1498 }
1499 }
1500
1501 /* add any remaining custom IEs */
1502 if (ie && ie_len) {
1503 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1504 "not enough space for preq custom IEs\n"))
1505 return pos;
1506 memcpy(buffer + pos, ie + custom_ie_offset,
1507 ie_len - custom_ie_offset);
1508 ie_desc->common_ies = buffer + pos;
1509 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1510 pos += ie_len - custom_ie_offset;
1511 }
1512
1513 return pos;
1514};
1515
a619a4c0 1516struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
a344d677
JB		 1517 const u8 *src, const u8 *dst,
1518 u32 ratemask,
6b77863b 1519 struct ieee80211_channel *chan,
a619a4c0 1520 const u8 *ssid, size_t ssid_len,
a806c558
PS		 1521 const u8 *ie, size_t ie_len,
1522 bool directed)
46900298
JB		 1523{
1524 struct ieee80211_local *local = sdata->local;
2103dec1 1525 struct cfg80211_chan_def chandef;
46900298
JB		 1526 struct sk_buff *skb;
1527 struct ieee80211_mgmt *mgmt;
b9a9ada1 1528 int ies_len;
c56ef672
DS		 1529 u32 rate_masks[IEEE80211_NUM_BANDS] = {};
1530 struct ieee80211_scan_ies dummy_ie_desc;
46900298 1531
a806c558
PS		 1532 /*
1533 * Do not send DS Channel parameter for directed probe requests
1534 * in order to maximize the chance that we get a response. Some
1535 * badly-behaved APs don't respond when this parameter is included.
1536 */
2103dec1 1537 chandef.width = sdata->vif.bss_conf.chandef.width;
a806c558 1538 if (directed)
2103dec1 1539 chandef.chan = NULL;
a806c558 1540 else
2103dec1 1541 chandef.chan = chan;
651b5225 1542
a344d677
JB		 1543 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1544 100 + ie_len);
5b2bbf75 1545 if (!skb)
b9a9ada1
JB		 1546 return NULL;
1547
c56ef672 1548 rate_masks[chan->band] = ratemask;
b9a9ada1 1549 ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
c56ef672
DS		 1550 skb_tailroom(skb), &dummy_ie_desc,
1551 ie, ie_len, BIT(chan->band),
1552 rate_masks, &chandef);
b9a9ada1 1553 skb_put(skb, ies_len);
7c12ce8b 1554
46900298 1555 if (dst) {
7c12ce8b 1556 mgmt = (struct ieee80211_mgmt *) skb->data;
46900298
JB		 1557 memcpy(mgmt->da, dst, ETH_ALEN);
1558 memcpy(mgmt->bssid, dst, ETH_ALEN);
46900298 1559 }
46900298 1560
62ae67be 1561 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
5b2bbf75 1562
a619a4c0
JO		 1563 return skb;
1564}
1565
a344d677
JB		 1566void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1567 const u8 *src, const u8 *dst,
a619a4c0 1568 const u8 *ssid, size_t ssid_len,
a806c558 1569 const u8 *ie, size_t ie_len,
1672c0e3 1570 u32 ratemask, bool directed, u32 tx_flags,
55de908a 1571 struct ieee80211_channel *channel, bool scan)
a619a4c0
JO		 1572{
1573 struct sk_buff *skb;
1574
a344d677 1575 skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel,
6b77863b 1576 ssid, ssid_len,
85a237fe 1577 ie, ie_len, directed);
aad14ceb 1578 if (skb) {
1672c0e3 1579 IEEE80211_SKB_CB(skb)->flags |= tx_flags;
55de908a
JB		 1580 if (scan)
1581 ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band);
1582 else
1583 ieee80211_tx_skb(sdata, skb);
aad14ceb 1584 }
46900298
JB		 1585}
1586
2103dec1 1587u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
46900298 1588 struct ieee802_11_elems *elems,
9ebb61a2 1589 enum ieee80211_band band, u32 *basic_rates)
46900298
JB		 1590{
1591 struct ieee80211_supported_band *sband;
46900298 1592 size_t num_rates;
2103dec1
SW		 1593 u32 supp_rates, rate_flags;
1594 int i, j, shift;
1595 sband = sdata->local->hw.wiphy->bands[band];
1596
1597 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1598 shift = ieee80211_vif_get_shift(&sdata->vif);
46900298 1599
4ee73f33
MK		 1600 if (WARN_ON(!sband))
1601 return 1;
46900298 1602
46900298
JB		 1603 num_rates = sband->n_bitrates;
1604 supp_rates = 0;
1605 for (i = 0; i < elems->supp_rates_len +
1606 elems->ext_supp_rates_len; i++) {
1607 u8 rate = 0;
1608 int own_rate;
9ebb61a2 1609 bool is_basic;
46900298
JB		 1610 if (i < elems->supp_rates_len)
1611 rate = elems->supp_rates[i];
1612 else if (elems->ext_supp_rates)
1613 rate = elems->ext_supp_rates
1614 [i - elems->supp_rates_len];
1615 own_rate = 5 * (rate & 0x7f);
9ebb61a2
AN		 1616 is_basic = !!(rate & 0x80);
1617
1618 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
1619 continue;
1620
1621 for (j = 0; j < num_rates; j++) {
2103dec1
SW		 1622 int brate;
1623 if ((rate_flags & sband->bitrates[j].flags)
1624 != rate_flags)
1625 continue;
1626
1627 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
1628 1 << shift);
1629
1630 if (brate == own_rate) {
46900298 1631 supp_rates |= BIT(j);
9ebb61a2
AN		 1632 if (basic_rates && is_basic)
1633 *basic_rates |= BIT(j);
1634 }
1635 }
46900298
JB		 1636 }
1637 return supp_rates;
1638}
f2753ddb 1639
84f6a01c
JB		 1640void ieee80211_stop_device(struct ieee80211_local *local)
1641{
1642 ieee80211_led_radio(local, false);
67408c8c 1643 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
84f6a01c
JB		 1644
1645 cancel_work_sync(&local->reconfig_filter);
84f6a01c
JB		 1646
1647 flush_workqueue(local->workqueue);
678f415f 1648 drv_stop(local);
84f6a01c
JB		 1649}
1650
f6837ba8
JB		 1651static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
1652{
1653 struct ieee80211_sub_if_data *sdata;
1654 struct ieee80211_chanctx *ctx;
1655
1656 /*
1657 * We get here if during resume the device can't be restarted properly.
1658 * We might also get here if this happens during HW reset, which is a
1659 * slightly different situation and we need to drop all connections in
1660 * the latter case.
1661 *
1662 * Ask cfg80211 to turn off all interfaces, this will result in more
1663 * warnings but at least we'll then get into a clean stopped state.
1664 */
1665
1666 local->resuming = false;
1667 local->suspended = false;
7584f88f 1668 local->in_reconfig = false;
f6837ba8
JB		 1669
1670 /* scheduled scan clearly can't be running any more, but tell
1671 * cfg80211 and clear local state
1672 */
1673 ieee80211_sched_scan_end(local);
1674
1675 list_for_each_entry(sdata, &local->interfaces, list)
1676 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
1677
1678 /* Mark channel contexts as not being in the driver any more to avoid
1679 * removing them from the driver during the shutdown process...
1680 */
1681 mutex_lock(&local->chanctx_mtx);
1682 list_for_each_entry(ctx, &local->chanctx_list, list)
1683 ctx->driver_present = false;
1684 mutex_unlock(&local->chanctx_mtx);
1685
1686 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
1687}
1688
153a5fc4
SG		 1689static void ieee80211_assign_chanctx(struct ieee80211_local *local,
1690 struct ieee80211_sub_if_data *sdata)
1691{
1692 struct ieee80211_chanctx_conf *conf;
1693 struct ieee80211_chanctx *ctx;
1694
1695 if (!local->use_chanctx)
1696 return;
1697
1698 mutex_lock(&local->chanctx_mtx);
1699 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1700 lockdep_is_held(&local->chanctx_mtx));
1701 if (conf) {
1702 ctx = container_of(conf, struct ieee80211_chanctx, conf);
1703 drv_assign_vif_chanctx(local, sdata, ctx);
1704 }
1705 mutex_unlock(&local->chanctx_mtx);
1706}
1707
f2753ddb
JB		 1708int ieee80211_reconfig(struct ieee80211_local *local)
1709{
1710 struct ieee80211_hw *hw = &local->hw;
1711 struct ieee80211_sub_if_data *sdata;
55de908a 1712 struct ieee80211_chanctx *ctx;
f2753ddb 1713 struct sta_info *sta;
2683d65b 1714 int res, i;
d888130a 1715 bool reconfig_due_to_wowlan = false;
d43c6b6e 1716 struct ieee80211_sub_if_data *sched_scan_sdata;
6ea0a69c 1717 struct cfg80211_sched_scan_request *sched_scan_req;
d43c6b6e 1718 bool sched_scan_stopped = false;
b0485e9f 1719 bool suspended = local->suspended;
d888130a 1720
0f8b8245
EP		 1721 /* nothing to do if HW shouldn't run */
1722 if (!local->open_count)
1723 goto wake_up;
1724
8f21b0ad 1725#ifdef CONFIG_PM
b0485e9f 1726 if (suspended)
ceb99fe0 1727 local->resuming = true;
f2753ddb 1728
eecc4800 1729 if (local->wowlan) {
b0485e9f
EP		 1730 /*
1731 * In the wowlan case, both mac80211 and the device
1732 * are functional when the resume op is called, so
1733 * clear local->suspended so the device could operate
1734 * normally (e.g. pass rx frames).
1735 */
1736 local->suspended = false;
eecc4800 1737 res = drv_resume(local);
27b3eb9c 1738 local->wowlan = false;
eecc4800
JB		 1739 if (res < 0) {
1740 local->resuming = false;
1741 return res;
1742 }
1743 if (res == 0)
1744 goto wake_up;
1745 WARN_ON(res > 1);
1746 /*
1747 * res is 1, which means the driver requested
1748 * to go through a regular reset on wakeup.
b0485e9f 1749 * restore local->suspended in this case.
eecc4800 1750 */
d888130a 1751 reconfig_due_to_wowlan = true;
b0485e9f 1752 local->suspended = true;
eecc4800
JB		 1753 }
1754#endif
f2753ddb 1755
43d6df00
EP		 1756 /*
1757 * In case of hw_restart during suspend (without wowlan),
1758 * cancel restart work, as we are reconfiguring the device
1759 * anyway.
1760 * Note that restart_work is scheduled on a frozen workqueue,
1761 * so we can't deadlock in this case.
1762 */
1763 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
1764 cancel_work_sync(&local->restart_work);
1765
968a76ce
EP		 1766 local->started = false;
1767
94f9b97b
JB		 1768 /*
1769 * Upon resume hardware can sometimes be goofy due to
1770 * various platform / driver / bus issues, so restarting
1771 * the device may at times not work immediately. Propagate
1772 * the error.
1773 */
1774 res = drv_start(local);
1775 if (res) {
b0485e9f 1776 if (suspended)
f6837ba8
JB		 1777 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
1778 else
1779 WARN(1, "Hardware became unavailable during restart.\n");
1780 ieee80211_handle_reconfig_failure(local);
94f9b97b 1781 return res;
f2753ddb
JB		 1782 }
1783
7f281975
YAP		 1784 /* setup fragmentation threshold */
1785 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
1786
1787 /* setup RTS threshold */
1788 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
1789
1790 /* reset coverage class */
1791 drv_set_coverage_class(local, hw->wiphy->coverage_class);
1792
94f9b97b
JB		 1793 ieee80211_led_radio(local, true);
1794 ieee80211_mod_tpt_led_trig(local,
1795 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
1796
f2753ddb 1797 /* add interfaces */
4b6f1dd6
JB		 1798 sdata = rtnl_dereference(local->monitor_sdata);
1799 if (sdata) {
3c3e21e7
JB		 1800 /* in HW restart it exists already */
1801 WARN_ON(local->resuming);
4b6f1dd6
JB		 1802 res = drv_add_interface(local, sdata);
1803 if (WARN_ON(res)) {
0c2bef46 1804 RCU_INIT_POINTER(local->monitor_sdata, NULL);
4b6f1dd6
JB		 1805 synchronize_net();
1806 kfree(sdata);
1807 }
1808 }
1809
f2753ddb
JB		 1810 list_for_each_entry(sdata, &local->interfaces, list) {
1811 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1812 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
c8fff3dc 1813 ieee80211_sdata_running(sdata)) {
7b7eab6f 1814 res = drv_add_interface(local, sdata);
c8fff3dc
LC		 1815 if (WARN_ON(res))
1816 break;
1817 }
1818 }
1819
1820 /* If adding any of the interfaces failed above, roll back and
1821 * report failure.
1822 */
1823 if (res) {
1824 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
1825 list)
1826 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1827 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1828 ieee80211_sdata_running(sdata))
1829 drv_remove_interface(local, sdata);
1830 ieee80211_handle_reconfig_failure(local);
1831 return res;
f2753ddb
JB		 1832 }
1833
55de908a 1834 /* add channel contexts */
f0dea9c7
AS		 1835 if (local->use_chanctx) {
1836 mutex_lock(&local->chanctx_mtx);
1837 list_for_each_entry(ctx, &local->chanctx_list, list)
5bcae31d
MK		 1838 if (ctx->replace_state !=
1839 IEEE80211_CHANCTX_REPLACES_OTHER)
1840 WARN_ON(drv_add_chanctx(local, ctx));
f0dea9c7 1841 mutex_unlock(&local->chanctx_mtx);
55de908a 1842
7df180f7
ZG		 1843 list_for_each_entry(sdata, &local->interfaces, list) {
1844 if (!ieee80211_sdata_running(sdata))
1845 continue;
1846 ieee80211_assign_chanctx(local, sdata);
1847 }
6352c87f 1848
7df180f7
ZG		 1849 sdata = rtnl_dereference(local->monitor_sdata);
1850 if (sdata && ieee80211_sdata_running(sdata))
1851 ieee80211_assign_chanctx(local, sdata);
1852 }
fe5f2559 1853
f2753ddb 1854 /* add STAs back */
34e89507
JB		 1855 mutex_lock(&local->sta_mtx);
1856 list_for_each_entry(sta, &local->sta_list, list) {
2e8d397e 1857 enum ieee80211_sta_state state;
f09603a2 1858
2e8d397e
AN		 1859 if (!sta->uploaded)
1860 continue;
1861
1862 /* AP-mode stations will be added later */
1863 if (sta->sdata->vif.type == NL80211_IFTYPE_AP)
1864 continue;
1865
1866 for (state = IEEE80211_STA_NOTEXIST;
1867 state < sta->sta_state; state++)
1868 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1869 state + 1));
f2753ddb 1870 }
34e89507 1871 mutex_unlock(&local->sta_mtx);
f2753ddb 1872
2683d65b 1873 /* reconfigure tx conf */
54bcbc69
JB		 1874 if (hw->queues >= IEEE80211_NUM_ACS) {
1875 list_for_each_entry(sdata, &local->interfaces, list) {
1876 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1877 sdata->vif.type == NL80211_IFTYPE_MONITOR ||
1878 !ieee80211_sdata_running(sdata))
1879 continue;
f6f3def3 1880
54bcbc69
JB		 1881 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1882 drv_conf_tx(local, sdata, i,
1883 &sdata->tx_conf[i]);
1884 }
f6f3def3 1885 }
2683d65b 1886
f2753ddb
JB		 1887 /* reconfigure hardware */
1888 ieee80211_hw_config(local, ~0);
1889
f2753ddb 1890 ieee80211_configure_filter(local);
f2753ddb
JB		 1891
1892 /* Finally also reconfigure all the BSS information */
1893 list_for_each_entry(sdata, &local->interfaces, list) {
ac8dd506
JB		 1894 u32 changed;
1895
9607e6b6 1896 if (!ieee80211_sdata_running(sdata))
f2753ddb 1897 continue;
ac8dd506
JB		 1898
1899 /* common change flags for all interface types */
1900 changed = BSS_CHANGED_ERP_CTS_PROT |
1901 BSS_CHANGED_ERP_PREAMBLE |
1902 BSS_CHANGED_ERP_SLOT |
1903 BSS_CHANGED_HT |
1904 BSS_CHANGED_BASIC_RATES |
1905 BSS_CHANGED_BEACON_INT |
1906 BSS_CHANGED_BSSID |
4ced3f74 1907 BSS_CHANGED_CQM |
55de47f6 1908 BSS_CHANGED_QOS |
1ea6f9c0
JB		 1909 BSS_CHANGED_IDLE |
1910 BSS_CHANGED_TXPOWER;
ac8dd506 1911
f2753ddb
JB		 1912 switch (sdata->vif.type) {
1913 case NL80211_IFTYPE_STATION:
0d392e93 1914 changed |= BSS_CHANGED_ASSOC |
ab095877
EP		 1915 BSS_CHANGED_ARP_FILTER |
1916 BSS_CHANGED_PS;
c65dd147 1917
989c6505
AB		 1918 /* Re-send beacon info report to the driver */
1919 if (sdata->u.mgd.have_beacon)
1920 changed |= BSS_CHANGED_BEACON_INFO;
c65dd147 1921
8d61ffa5 1922 sdata_lock(sdata);
ac8dd506 1923 ieee80211_bss_info_change_notify(sdata, changed);
8d61ffa5 1924 sdata_unlock(sdata);
ac8dd506 1925 break;
6e0bd6c3 1926 case NL80211_IFTYPE_OCB:
239281f8
RL		 1927 changed |= BSS_CHANGED_OCB;
1928 ieee80211_bss_info_change_notify(sdata, changed);
6e0bd6c3 1929 break;
f2753ddb 1930 case NL80211_IFTYPE_ADHOC:
ac8dd506
JB		 1931 changed |= BSS_CHANGED_IBSS;
1932 /* fall through */
f2753ddb 1933 case NL80211_IFTYPE_AP:
339afbf4 1934 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
e7979ac7 1935
1041638f 1936 if (sdata->vif.type == NL80211_IFTYPE_AP) {
e7979ac7
AN		 1937 changed |= BSS_CHANGED_AP_PROBE_RESP;
1938
1041638f
JB		 1939 if (rcu_access_pointer(sdata->u.ap.beacon))
1940 drv_start_ap(local, sdata);
1941 }
1942
7827493b 1943 /* fall through */
f2753ddb 1944 case NL80211_IFTYPE_MESH_POINT:
8da34932
JB		 1945 if (sdata->vif.bss_conf.enable_beacon) {
1946 changed |= BSS_CHANGED_BEACON |
1947 BSS_CHANGED_BEACON_ENABLED;
1948 ieee80211_bss_info_change_notify(sdata, changed);
1949 }
f2753ddb
JB		 1950 break;
1951 case NL80211_IFTYPE_WDS:
f2753ddb
JB		 1952 case NL80211_IFTYPE_AP_VLAN:
1953 case NL80211_IFTYPE_MONITOR:
98104fde 1954 case NL80211_IFTYPE_P2P_DEVICE:
b205786e 1955 /* nothing to do */
f142c6b9 1956 break;
f2753ddb 1957 case NL80211_IFTYPE_UNSPECIFIED:
2e161f78 1958 case NUM_NL80211_IFTYPES:
2ca27bcf
JB		 1959 case NL80211_IFTYPE_P2P_CLIENT:
1960 case NL80211_IFTYPE_P2P_GO:
f2753ddb
JB		 1961 WARN_ON(1);
1962 break;
1963 }
1964 }
1965
4a733ef1 1966 ieee80211_recalc_ps(local);
8e1b23b9 1967
6e1b1b24
EP		 1968 /*
1969 * The sta might be in psm against the ap (e.g. because
1970 * this was the state before a hw restart), so we
1971 * explicitly send a null packet in order to make sure
1972 * it'll sync against the ap (and get out of psm).
1973 */
1974 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
1975 list_for_each_entry(sdata, &local->interfaces, list) {
1976 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1977 continue;
20f544ee
JB		 1978 if (!sdata->u.mgd.associated)
1979 continue;
6e1b1b24 1980
076cdcb1 1981 ieee80211_send_nullfunc(local, sdata, false);
6e1b1b24
EP		 1982 }
1983 }
1984
2e8d397e
AN		 1985 /* APs are now beaconing, add back stations */
1986 mutex_lock(&local->sta_mtx);
1987 list_for_each_entry(sta, &local->sta_list, list) {
1988 enum ieee80211_sta_state state;
1989
1990 if (!sta->uploaded)
1991 continue;
1992
1993 if (sta->sdata->vif.type != NL80211_IFTYPE_AP)
1994 continue;
1995
1996 for (state = IEEE80211_STA_NOTEXIST;
1997 state < sta->sta_state; state++)
1998 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1999 state + 1));
2000 }
2001 mutex_unlock(&local->sta_mtx);
2002
7b21aea0 2003 /* add back keys */
f9dca80b
MK		 2004 list_for_each_entry(sdata, &local->interfaces, list)
2005 ieee80211_reset_crypto_tx_tailroom(sdata);
2006
7b21aea0
ES		 2007 list_for_each_entry(sdata, &local->interfaces, list)
2008 if (ieee80211_sdata_running(sdata))
2009 ieee80211_enable_keys(sdata);
2010
0d440ea2
EP		 2011 /* Reconfigure sched scan if it was interrupted by FW restart */
2012 mutex_lock(&local->mtx);
2013 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2014 lockdep_is_held(&local->mtx));
2015 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2016 lockdep_is_held(&local->mtx));
2017 if (sched_scan_sdata && sched_scan_req)
2018 /*
2019 * Sched scan stopped, but we don't want to report it. Instead,
2020 * we're trying to reschedule. However, if more than one scan
2021 * plan was set, we cannot reschedule since we don't know which
2022 * scan plan was currently running (and some scan plans may have
2023 * already finished).
2024 */
2025 if (sched_scan_req->n_scan_plans > 1 ||
2026 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2027 sched_scan_req))
2028 sched_scan_stopped = true;
2029 mutex_unlock(&local->mtx);
2030
2031 if (sched_scan_stopped)
2032 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy);
2033
c6209488 2034 wake_up:
04800ada
AN		 2035 local->in_reconfig = false;
2036 barrier();
2037
3c3e21e7
JB		 2038 if (local->monitors == local->open_count && local->monitors > 0)
2039 ieee80211_add_virtual_monitor(local);
2040
2a419056
JB		 2041 /*
2042 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2043 * sessions can be established after a resume.
2044 *
2045 * Also tear down aggregation sessions since reconfiguring
2046 * them in a hardware restart scenario is not easily done
2047 * right now, and the hardware will have lost information
2048 * about the sessions, but we and the AP still think they
2049 * are active. This is really a workaround though.
2050 */
30686bf7 2051 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2a419056
JB		 2052 mutex_lock(&local->sta_mtx);
2053
2054 list_for_each_entry(sta, &local->sta_list, list) {
27392719
EP		 2055 if (!local->resuming)
2056 ieee80211_sta_tear_down_BA_sessions(
2057 sta, AGG_STOP_LOCAL_REQUEST);
c2c98fde 2058 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
74e2bd1f 2059 }
2a419056
JB		 2060
2061 mutex_unlock(&local->sta_mtx);
74e2bd1f 2062 }
74e2bd1f 2063
445ea4e8 2064 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 2065 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2066 false);
f2753ddb 2067
5bb644a0
JB		 2068 /*
2069 * If this is for hw restart things are still running.
2070 * We may want to change that later, however.
2071 */
b0485e9f 2072 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
cf2c92d8 2073 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
8f21b0ad 2074
b0485e9f 2075 if (!suspended)
5bb644a0
JB		 2076 return 0;
2077
2078#ifdef CONFIG_PM
ceb99fe0 2079 /* first set suspended false, then resuming */
5bb644a0 2080 local->suspended = false;
ceb99fe0
JB		 2081 mb();
2082 local->resuming = false;
5bb644a0 2083
9120d94e
LC		 2084 /* It's possible that we don't handle the scan completion in
2085 * time during suspend, so if it's still marked as completed
2086 * here, queue the work and flush it to clean things up.
2087 * Instead of calling the worker function directly here, we
2088 * really queue it to avoid potential races with other flows
2089 * scheduling the same work.
2090 */
2091 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2092 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2093 flush_delayed_work(&local->scan_work);
2094 }
2095
0f8b8245 2096 if (local->open_count && !reconfig_due_to_wowlan)
cf2c92d8
EP		 2097 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2098
b8360ab8
JB		 2099 list_for_each_entry(sdata, &local->interfaces, list) {
2100 if (!ieee80211_sdata_running(sdata))
2101 continue;
2102 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2103 ieee80211_sta_restart(sdata);
2104 }
2105
26d59535 2106 mod_timer(&local->sta_cleanup, jiffies + 1);
5bb644a0
JB		 2107#else
2108 WARN_ON(1);
2109#endif
d43c6b6e 2110
f2753ddb
JB		 2111 return 0;
2112}
42935eca 2113
95acac61
JB		 2114void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2115{
2116 struct ieee80211_sub_if_data *sdata;
2117 struct ieee80211_local *local;
2118 struct ieee80211_key *key;
2119
2120 if (WARN_ON(!vif))
2121 return;
2122
2123 sdata = vif_to_sdata(vif);
2124 local = sdata->local;
2125
2126 if (WARN_ON(!local->resuming))
2127 return;
2128
2129 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2130 return;
2131
2132 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2133
2134 mutex_lock(&local->key_mtx);
2135 list_for_each_entry(key, &sdata->key_list, list)
2136 key->flags |= KEY_FLAG_TAINTED;
2137 mutex_unlock(&local->key_mtx);
2138}
2139EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2140
04ecd257 2141void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
0f78231b 2142{
04ecd257
JB		 2143 struct ieee80211_local *local = sdata->local;
2144 struct ieee80211_chanctx_conf *chanctx_conf;
2145 struct ieee80211_chanctx *chanctx;
025e6be2 2146
04ecd257 2147 mutex_lock(&local->chanctx_mtx);
0f78231b 2148
04ecd257
JB		 2149 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2150 lockdep_is_held(&local->chanctx_mtx));
0f78231b 2151
c189a685
AO		 2152 /*
2153 * This function can be called from a work, thus it may be possible
2154 * that the chanctx_conf is removed (due to a disconnection, for
2155 * example).
2156 * So nothing should be done in such case.
2157 */
2158 if (!chanctx_conf)
5d8e4237 2159 goto unlock;
0f78231b 2160
04ecd257
JB		 2161 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2162 ieee80211_recalc_smps_chanctx(local, chanctx);
5d8e4237 2163 unlock:
04ecd257 2164 mutex_unlock(&local->chanctx_mtx);
0f78231b 2165}
8e664fb3 2166
21f659bf
EP		 2167void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2168{
2169 struct ieee80211_local *local = sdata->local;
2170 struct ieee80211_chanctx_conf *chanctx_conf;
2171 struct ieee80211_chanctx *chanctx;
2172
2173 mutex_lock(&local->chanctx_mtx);
2174
2175 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2176 lockdep_is_held(&local->chanctx_mtx));
2177
2178 if (WARN_ON_ONCE(!chanctx_conf))
2179 goto unlock;
2180
2181 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2182 ieee80211_recalc_chanctx_min_def(local, chanctx);
2183 unlock:
2184 mutex_unlock(&local->chanctx_mtx);
2185}
2186
8e664fb3
JB		 2187size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2188{
2189 size_t pos = offset;
2190
2191 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2192 pos += 2 + ies[pos + 1];
2193
2194 return pos;
2195}
615f7b9b
MV		 2196
2197static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2198 int rssi_min_thold,
2199 int rssi_max_thold)
2200{
2201 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2202
2203 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2204 return;
2205
2206 /*
2207 * Scale up threshold values before storing it, as the RSSI averaging
2208 * algorithm uses a scaled up value as well. Change this scaling
2209 * factor if the RSSI averaging algorithm changes.
2210 */
2211 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2212 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2213}
2214
2215void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2216 int rssi_min_thold,
2217 int rssi_max_thold)
2218{
2219 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2220
2221 WARN_ON(rssi_min_thold == rssi_max_thold ||
2222 rssi_min_thold > rssi_max_thold);
2223
2224 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2225 rssi_max_thold);
2226}
2227EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2228
2229void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2230{
2231 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2232
2233 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2234}
2235EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
768db343 2236
ef96a842 2237u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
42e7aa77
AS		 2238 u16 cap)
2239{
2240 __le16 tmp;
2241
2242 *pos++ = WLAN_EID_HT_CAPABILITY;
2243 *pos++ = sizeof(struct ieee80211_ht_cap);
2244 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2245
2246 /* capability flags */
2247 tmp = cpu_to_le16(cap);
2248 memcpy(pos, &tmp, sizeof(u16));
2249 pos += sizeof(u16);
2250
2251 /* AMPDU parameters */
ef96a842
BG		 2252 *pos++ = ht_cap->ampdu_factor |
2253 (ht_cap->ampdu_density <<
42e7aa77
AS		 2254 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2255
2256 /* MCS set */
ef96a842
BG		 2257 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2258 pos += sizeof(ht_cap->mcs);
42e7aa77
AS		 2259
2260 /* extended capabilities */
2261 pos += sizeof(__le16);
2262
2263 /* BF capabilities */
2264 pos += sizeof(__le32);
2265
2266 /* antenna selection */
2267 pos += sizeof(u8);
2268
2269 return pos;
2270}
2271
ba0afa2f 2272u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
cc3983d8 2273 u32 cap)
ba0afa2f
MP		 2274{
2275 __le32 tmp;
2276
2277 *pos++ = WLAN_EID_VHT_CAPABILITY;
d4950281
MP		 2278 *pos++ = sizeof(struct ieee80211_vht_cap);
2279 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
ba0afa2f
MP		 2280
2281 /* capability flags */
2282 tmp = cpu_to_le32(cap);
2283 memcpy(pos, &tmp, sizeof(u32));
2284 pos += sizeof(u32);
2285
2286 /* VHT MCS set */
2287 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2288 pos += sizeof(vht_cap->vht_mcs);
2289
2290 return pos;
2291}
2292
074d46d1 2293u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
4bf88530 2294 const struct cfg80211_chan_def *chandef,
431e3154 2295 u16 prot_mode)
42e7aa77 2296{
074d46d1 2297 struct ieee80211_ht_operation *ht_oper;
42e7aa77 2298 /* Build HT Information */
074d46d1
JB		 2299 *pos++ = WLAN_EID_HT_OPERATION;
2300 *pos++ = sizeof(struct ieee80211_ht_operation);
2301 ht_oper = (struct ieee80211_ht_operation *)pos;
4bf88530
JB		 2302 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2303 chandef->chan->center_freq);
2304 switch (chandef->width) {
2305 case NL80211_CHAN_WIDTH_160:
2306 case NL80211_CHAN_WIDTH_80P80:
2307 case NL80211_CHAN_WIDTH_80:
2308 case NL80211_CHAN_WIDTH_40:
2309 if (chandef->center_freq1 > chandef->chan->center_freq)
2310 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2311 else
2312 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
42e7aa77 2313 break;
42e7aa77 2314 default:
074d46d1 2315 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
42e7aa77
AS		 2316 break;
2317 }
aee286c2 2318 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4bf88530
JB		 2319 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2320 chandef->width != NL80211_CHAN_WIDTH_20)
074d46d1 2321 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
ff3cc5f4 2322
431e3154 2323 ht_oper->operation_mode = cpu_to_le16(prot_mode);
074d46d1 2324 ht_oper->stbc_param = 0x0000;
42e7aa77
AS		 2325
2326 /* It seems that Basic MCS set and Supported MCS set
2327 are identical for the first 10 bytes */
074d46d1
JB		 2328 memset(&ht_oper->basic_set, 0, 16);
2329 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
42e7aa77 2330
074d46d1 2331 return pos + sizeof(struct ieee80211_ht_operation);
42e7aa77
AS		 2332}
2333
fb28ec0c
AN		 2334u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2335 const struct cfg80211_chan_def *chandef)
2336{
2337 struct ieee80211_vht_operation *vht_oper;
2338
2339 *pos++ = WLAN_EID_VHT_OPERATION;
2340 *pos++ = sizeof(struct ieee80211_vht_operation);
2341 vht_oper = (struct ieee80211_vht_operation *)pos;
2342 vht_oper->center_freq_seg1_idx = ieee80211_frequency_to_channel(
2343 chandef->center_freq1);
2344 if (chandef->center_freq2)
2345 vht_oper->center_freq_seg2_idx =
2346 ieee80211_frequency_to_channel(chandef->center_freq2);
f020ae40
CYY		 2347 else
2348 vht_oper->center_freq_seg2_idx = 0x00;
fb28ec0c
AN		 2349
2350 switch (chandef->width) {
2351 case NL80211_CHAN_WIDTH_160:
2352 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ;
2353 break;
2354 case NL80211_CHAN_WIDTH_80P80:
2355 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2356 break;
2357 case NL80211_CHAN_WIDTH_80:
2358 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2359 break;
2360 default:
2361 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2362 break;
2363 }
2364
2365 /* don't require special VHT peer rates */
2366 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2367
2368 return pos + sizeof(struct ieee80211_vht_operation);
2369}
2370
4bf88530 2371void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
4a3cb702 2372 const struct ieee80211_ht_operation *ht_oper,
4bf88530 2373 struct cfg80211_chan_def *chandef)
42e7aa77
AS		 2374{
2375 enum nl80211_channel_type channel_type;
2376
4bf88530
JB		 2377 if (!ht_oper) {
2378 cfg80211_chandef_create(chandef, control_chan,
2379 NL80211_CHAN_NO_HT);
2380 return;
2381 }
42e7aa77 2382
074d46d1 2383 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
42e7aa77
AS		 2384 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2385 channel_type = NL80211_CHAN_HT20;
2386 break;
2387 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2388 channel_type = NL80211_CHAN_HT40PLUS;
2389 break;
2390 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2391 channel_type = NL80211_CHAN_HT40MINUS;
2392 break;
2393 default:
2394 channel_type = NL80211_CHAN_NO_HT;
2395 }
2396
4bf88530 2397 cfg80211_chandef_create(chandef, control_chan, channel_type);
42e7aa77
AS		 2398}
2399
abcff6ef
JD		 2400void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan,
2401 const struct ieee80211_vht_operation *oper,
2402 struct cfg80211_chan_def *chandef)
2403{
2404 if (!oper)
2405 return;
2406
2407 chandef->chan = control_chan;
2408
2409 switch (oper->chan_width) {
2410 case IEEE80211_VHT_CHANWIDTH_USE_HT:
2411 break;
2412 case IEEE80211_VHT_CHANWIDTH_80MHZ:
2413 chandef->width = NL80211_CHAN_WIDTH_80;
2414 break;
2415 case IEEE80211_VHT_CHANWIDTH_160MHZ:
2416 chandef->width = NL80211_CHAN_WIDTH_160;
2417 break;
2418 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
2419 chandef->width = NL80211_CHAN_WIDTH_80P80;
2420 break;
2421 default:
2422 break;
2423 }
2424
2425 chandef->center_freq1 =
2426 ieee80211_channel_to_frequency(oper->center_freq_seg1_idx,
2427 control_chan->band);
2428 chandef->center_freq2 =
2429 ieee80211_channel_to_frequency(oper->center_freq_seg2_idx,
2430 control_chan->band);
2431}
2432
2103dec1
SW		 2433int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2434 const struct ieee80211_supported_band *sband,
2435 const u8 *srates, int srates_len, u32 *rates)
2436{
2437 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
2438 int shift = ieee80211_chandef_get_shift(chandef);
2439 struct ieee80211_rate *br;
2440 int brate, rate, i, j, count = 0;
2441
2442 *rates = 0;
2443
2444 for (i = 0; i < srates_len; i++) {
2445 rate = srates[i] & 0x7f;
2446
2447 for (j = 0; j < sband->n_bitrates; j++) {
2448 br = &sband->bitrates[j];
2449 if ((rate_flags & br->flags) != rate_flags)
2450 continue;
2451
2452 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2453 if (brate == rate) {
2454 *rates |= BIT(j);
2455 count++;
2456 break;
2457 }
2458 }
2459 }
2460 return count;
2461}
2462
fc8a7321 2463int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b
JB		 2464 struct sk_buff *skb, bool need_basic,
2465 enum ieee80211_band band)
768db343 2466{
768db343
AN		 2467 struct ieee80211_local *local = sdata->local;
2468 struct ieee80211_supported_band *sband;
2103dec1 2469 int rate, shift;
768db343 2470 u8 i, rates, *pos;
fc8a7321 2471 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1 2472 u32 rate_flags;
768db343 2473
2103dec1
SW		 2474 shift = ieee80211_vif_get_shift(&sdata->vif);
2475 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
6b77863b 2476 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2477 rates = 0;
2478 for (i = 0; i < sband->n_bitrates; i++) {
2479 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2480 continue;
2481 rates++;
2482 }
768db343
AN		 2483 if (rates > 8)
2484 rates = 8;
2485
2486 if (skb_tailroom(skb) < rates + 2)
2487 return -ENOMEM;
2488
2489 pos = skb_put(skb, rates + 2);
2490 *pos++ = WLAN_EID_SUPP_RATES;
2491 *pos++ = rates;
2492 for (i = 0; i < rates; i++) {
657c3e0c 2493 u8 basic = 0;
2103dec1
SW		 2494 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2495 continue;
2496
657c3e0c
AN		 2497 if (need_basic && basic_rates & BIT(i))
2498 basic = 0x80;
768db343 2499 rate = sband->bitrates[i].bitrate;
2103dec1
SW		 2500 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2501 5 * (1 << shift));
2502 *pos++ = basic | (u8) rate;
768db343
AN		 2503 }
2504
2505 return 0;
2506}
2507
fc8a7321 2508int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b
JB		 2509 struct sk_buff *skb, bool need_basic,
2510 enum ieee80211_band band)
768db343 2511{
768db343
AN		 2512 struct ieee80211_local *local = sdata->local;
2513 struct ieee80211_supported_band *sband;
cc63ec76 2514 int rate, shift;
768db343 2515 u8 i, exrates, *pos;
fc8a7321 2516 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1
SW		 2517 u32 rate_flags;
2518
2519 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2520 shift = ieee80211_vif_get_shift(&sdata->vif);
768db343 2521
6b77863b 2522 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2523 exrates = 0;
2524 for (i = 0; i < sband->n_bitrates; i++) {
2525 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2526 continue;
2527 exrates++;
2528 }
2529
768db343
AN		 2530 if (exrates > 8)
2531 exrates -= 8;
2532 else
2533 exrates = 0;
2534
2535 if (skb_tailroom(skb) < exrates + 2)
2536 return -ENOMEM;
2537
2538 if (exrates) {
2539 pos = skb_put(skb, exrates + 2);
2540 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2541 *pos++ = exrates;
2542 for (i = 8; i < sband->n_bitrates; i++) {
657c3e0c 2543 u8 basic = 0;
2103dec1
SW		 2544 if ((rate_flags & sband->bitrates[i].flags)
2545 != rate_flags)
2546 continue;
657c3e0c
AN		 2547 if (need_basic && basic_rates & BIT(i))
2548 basic = 0x80;
2103dec1
SW		 2549 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2550 5 * (1 << shift));
2551 *pos++ = basic | (u8) rate;
768db343
AN		 2552 }
2553 }
2554 return 0;
2555}
1dae27f8
WYG		 2556
2557int ieee80211_ave_rssi(struct ieee80211_vif *vif)
2558{
2559 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2560 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2561
be6bcabc
WYG		 2562 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
2563 /* non-managed type inferfaces */
2564 return 0;
2565 }
338c17ae 2566 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
1dae27f8 2567}
0d8a0a17 2568EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
04ecd257
JB		 2569
2570u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
2571{
2572 if (!mcs)
2573 return 1;
2574
2575 /* TODO: consider rx_highest */
2576
2577 if (mcs->rx_mask[3])
2578 return 4;
2579 if (mcs->rx_mask[2])
2580 return 3;
2581 if (mcs->rx_mask[1])
2582 return 2;
2583 return 1;
2584}
f4bda337
TP		 2585
2586/**
2587 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
2588 * @local: mac80211 hw info struct
2589 * @status: RX status
2590 * @mpdu_len: total MPDU length (including FCS)
2591 * @mpdu_offset: offset into MPDU to calculate timestamp at
2592 *
2593 * This function calculates the RX timestamp at the given MPDU offset, taking
2594 * into account what the RX timestamp was. An offset of 0 will just normalize
2595 * the timestamp to TSF at beginning of MPDU reception.
2596 */
2597u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
2598 struct ieee80211_rx_status *status,
2599 unsigned int mpdu_len,
2600 unsigned int mpdu_offset)
2601{
2602 u64 ts = status->mactime;
2603 struct rate_info ri;
2604 u16 rate;
2605
2606 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
2607 return 0;
2608
2609 memset(&ri, 0, sizeof(ri));
2610
2611 /* Fill cfg80211 rate info */
2612 if (status->flag & RX_FLAG_HT) {
2613 ri.mcs = status->rate_idx;
2614 ri.flags |= RATE_INFO_FLAGS_MCS;
2615 if (status->flag & RX_FLAG_40MHZ)
b51f3bee
JB		 2616 ri.bw = RATE_INFO_BW_40;
2617 else
2618 ri.bw = RATE_INFO_BW_20;
f4bda337
TP		 2619 if (status->flag & RX_FLAG_SHORT_GI)
2620 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
5614618e
JB		 2621 } else if (status->flag & RX_FLAG_VHT) {
2622 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
2623 ri.mcs = status->rate_idx;
2624 ri.nss = status->vht_nss;
2625 if (status->flag & RX_FLAG_40MHZ)
b51f3bee
JB		 2626 ri.bw = RATE_INFO_BW_40;
2627 else if (status->vht_flag & RX_VHT_FLAG_80MHZ)
2628 ri.bw = RATE_INFO_BW_80;
2629 else if (status->vht_flag & RX_VHT_FLAG_160MHZ)
2630 ri.bw = RATE_INFO_BW_160;
2631 else
2632 ri.bw = RATE_INFO_BW_20;
5614618e
JB		 2633 if (status->flag & RX_FLAG_SHORT_GI)
2634 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
f4bda337
TP		 2635 } else {
2636 struct ieee80211_supported_band *sband;
2103dec1
SW		 2637 int shift = 0;
2638 int bitrate;
2639
b51f3bee 2640 if (status->flag & RX_FLAG_10MHZ) {
2103dec1 2641 shift = 1;
b51f3bee
JB		 2642 ri.bw = RATE_INFO_BW_10;
2643 } else if (status->flag & RX_FLAG_5MHZ) {
2103dec1 2644 shift = 2;
b51f3bee
JB		 2645 ri.bw = RATE_INFO_BW_5;
2646 } else {
2647 ri.bw = RATE_INFO_BW_20;
2648 }
f4bda337
TP		 2649
2650 sband = local->hw.wiphy->bands[status->band];
2103dec1
SW		 2651 bitrate = sband->bitrates[status->rate_idx].bitrate;
2652 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
f4bda337
TP		 2653 }
2654
2655 rate = cfg80211_calculate_bitrate(&ri);
d86aa4f8
JB		 2656 if (WARN_ONCE(!rate,
2657 "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n",
2658 status->flag, status->rate_idx, status->vht_nss))
2659 return 0;
f4bda337
TP		 2660
2661 /* rewind from end of MPDU */
2662 if (status->flag & RX_FLAG_MACTIME_END)
2663 ts -= mpdu_len * 8 * 10 / rate;
2664
2665 ts += mpdu_offset * 8 * 10 / rate;
2666
2667 return ts;
2668}
164eb02d
SW		 2669
2670void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
2671{
2672 struct ieee80211_sub_if_data *sdata;
d2859df5 2673 struct cfg80211_chan_def chandef;
164eb02d 2674
34a3740d 2675 mutex_lock(&local->mtx);
164eb02d
SW		 2676 mutex_lock(&local->iflist_mtx);
2677 list_for_each_entry(sdata, &local->interfaces, list) {
34a3740d
JB		 2678 /* it might be waiting for the local->mtx, but then
2679 * by the time it gets it, sdata->wdev.cac_started
2680 * will no longer be true
2681 */
2682 cancel_delayed_work(&sdata->dfs_cac_timer_work);
164eb02d
SW		 2683
2684 if (sdata->wdev.cac_started) {
d2859df5 2685 chandef = sdata->vif.bss_conf.chandef;
164eb02d
SW		 2686 ieee80211_vif_release_channel(sdata);
2687 cfg80211_cac_event(sdata->dev,
d2859df5 2688 &chandef,
164eb02d
SW		 2689 NL80211_RADAR_CAC_ABORTED,
2690 GFP_KERNEL);
2691 }
2692 }
2693 mutex_unlock(&local->iflist_mtx);
34a3740d 2694 mutex_unlock(&local->mtx);
164eb02d
SW		 2695}
2696
2697void ieee80211_dfs_radar_detected_work(struct work_struct *work)
2698{
2699 struct ieee80211_local *local =
2700 container_of(work, struct ieee80211_local, radar_detected_work);
84a3d1c9 2701 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
486cf4c0
MK		 2702 struct ieee80211_chanctx *ctx;
2703 int num_chanctx = 0;
2704
2705 mutex_lock(&local->chanctx_mtx);
2706 list_for_each_entry(ctx, &local->chanctx_list, list) {
2707 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
2708 continue;
2709
2710 num_chanctx++;
2711 chandef = ctx->conf.def;
2712 }
2713 mutex_unlock(&local->chanctx_mtx);
164eb02d
SW		 2714
2715 ieee80211_dfs_cac_cancel(local);
2716
486cf4c0
MK		 2717 if (num_chanctx > 1)
2718 /* XXX: multi-channel is not supported yet */
164eb02d 2719 WARN_ON(1);
84a3d1c9 2720 else
164eb02d 2721 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
164eb02d
SW		 2722}
2723
2724void ieee80211_radar_detected(struct ieee80211_hw *hw)
2725{
2726 struct ieee80211_local *local = hw_to_local(hw);
2727
2728 trace_api_radar_detected(local);
2729
2730 ieee80211_queue_work(hw, &local->radar_detected_work);
2731}
2732EXPORT_SYMBOL(ieee80211_radar_detected);
e6b7cde4
SW		 2733
2734u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
2735{
2736 u32 ret;
2737 int tmp;
2738
2739 switch (c->width) {
2740 case NL80211_CHAN_WIDTH_20:
2741 c->width = NL80211_CHAN_WIDTH_20_NOHT;
2742 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2743 break;
2744 case NL80211_CHAN_WIDTH_40:
2745 c->width = NL80211_CHAN_WIDTH_20;
2746 c->center_freq1 = c->chan->center_freq;
2747 ret = IEEE80211_STA_DISABLE_40MHZ |
2748 IEEE80211_STA_DISABLE_VHT;
2749 break;
2750 case NL80211_CHAN_WIDTH_80:
2751 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
2752 /* n_P40 */
2753 tmp /= 2;
2754 /* freq_P40 */
2755 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
2756 c->width = NL80211_CHAN_WIDTH_40;
2757 ret = IEEE80211_STA_DISABLE_VHT;
2758 break;
2759 case NL80211_CHAN_WIDTH_80P80:
2760 c->center_freq2 = 0;
2761 c->width = NL80211_CHAN_WIDTH_80;
2762 ret = IEEE80211_STA_DISABLE_80P80MHZ |
2763 IEEE80211_STA_DISABLE_160MHZ;
2764 break;
2765 case NL80211_CHAN_WIDTH_160:
2766 /* n_P20 */
2767 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
2768 /* n_P80 */
2769 tmp /= 4;
2770 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
2771 c->width = NL80211_CHAN_WIDTH_80;
2772 ret = IEEE80211_STA_DISABLE_80P80MHZ |
2773 IEEE80211_STA_DISABLE_160MHZ;
2774 break;
2775 default:
2776 case NL80211_CHAN_WIDTH_20_NOHT:
2777 WARN_ON_ONCE(1);
2778 c->width = NL80211_CHAN_WIDTH_20_NOHT;
2779 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2780 break;
2781 case NL80211_CHAN_WIDTH_5:
2782 case NL80211_CHAN_WIDTH_10:
2783 WARN_ON_ONCE(1);
2784 /* keep c->width */
2785 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2786 break;
2787 }
2788
2789 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
2790
2791 return ret;
2792}
687da132
EG		 2793
2794/*
2795 * Returns true if smps_mode_new is strictly more restrictive than
2796 * smps_mode_old.
2797 */
2798bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2799 enum ieee80211_smps_mode smps_mode_new)
2800{
2801 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
2802 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
2803 return false;
2804
2805 switch (smps_mode_old) {
2806 case IEEE80211_SMPS_STATIC:
2807 return false;
2808 case IEEE80211_SMPS_DYNAMIC:
2809 return smps_mode_new == IEEE80211_SMPS_STATIC;
2810 case IEEE80211_SMPS_OFF:
2811 return smps_mode_new != IEEE80211_SMPS_OFF;
2812 default:
2813 WARN_ON(1);
2814 }
2815
2816 return false;
2817}
c6da674a
CYY		 2818
2819int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2820 struct cfg80211_csa_settings *csa_settings)
2821{
2822 struct sk_buff *skb;
2823 struct ieee80211_mgmt *mgmt;
2824 struct ieee80211_local *local = sdata->local;
2825 int freq;
2826 int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) +
2827 sizeof(mgmt->u.action.u.chan_switch);
2828 u8 *pos;
2829
2830 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2831 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2832 return -EOPNOTSUPP;
2833
2834 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
2835 5 + /* channel switch announcement element */
2836 3 + /* secondary channel offset element */
2837 8); /* mesh channel switch parameters element */
2838 if (!skb)
2839 return -ENOMEM;
2840
2841 skb_reserve(skb, local->tx_headroom);
2842 mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len);
2843 memset(mgmt, 0, hdr_len);
2844 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2845 IEEE80211_STYPE_ACTION);
2846
2847 eth_broadcast_addr(mgmt->da);
2848 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2849 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2850 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
2851 } else {
2852 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2853 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
2854 }
2855 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
2856 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
2857 pos = skb_put(skb, 5);
2858 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
2859 *pos++ = 3; /* IE length */
2860 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
2861 freq = csa_settings->chandef.chan->center_freq;
2862 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
2863 *pos++ = csa_settings->count; /* count */
2864
2865 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
2866 enum nl80211_channel_type ch_type;
2867
2868 skb_put(skb, 3);
2869 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
2870 *pos++ = 1; /* IE length */
2871 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
2872 if (ch_type == NL80211_CHAN_HT40PLUS)
2873 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2874 else
2875 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2876 }
2877
2878 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2879 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
c6da674a
CYY		 2880
2881 skb_put(skb, 8);
2882 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
2883 *pos++ = 6; /* IE length */
2884 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
2885 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
2886 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
2887 *pos++ |= csa_settings->block_tx ?
2888 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
2889 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
2890 pos += 2;
ca91dc97 2891 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
c6da674a 2892 pos += 2;
c6da674a
CYY		 2893 }
2894
2895 ieee80211_tx_skb(sdata, skb);
2896 return 0;
2897}
2475b1cc
MS		 2898
2899bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
2900{
2901 return !(cs == NULL || cs->cipher == 0 ||
2902 cs->hdr_len < cs->pn_len + cs->pn_off ||
2903 cs->hdr_len <= cs->key_idx_off ||
2904 cs->key_idx_shift > 7 ||
2905 cs->key_idx_mask == 0);
2906}
2907
2908bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
2909{
2910 int i;
2911
2912 /* Ensure we have enough iftype bitmap space for all iftype values */
2913 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
2914
2915 for (i = 0; i < n; i++)
2916 if (!ieee80211_cs_valid(&cs[i]))
2917 return false;
2918
2919 return true;
2920}
2921
2922const struct ieee80211_cipher_scheme *
2923ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2924 enum nl80211_iftype iftype)
2925{
2926 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
2927 int n = local->hw.n_cipher_schemes;
2928 int i;
2929 const struct ieee80211_cipher_scheme *cs = NULL;
2930
2931 for (i = 0; i < n; i++) {
2932 if (l[i].cipher == cipher) {
2933 cs = &l[i];
2934 break;
2935 }
2936 }
2937
2938 if (!cs || !(cs->iftype & BIT(iftype)))
2939 return NULL;
2940
2941 return cs;
2942}
2943
2944int ieee80211_cs_headroom(struct ieee80211_local *local,
2945 struct cfg80211_crypto_settings *crypto,
2946 enum nl80211_iftype iftype)
2947{
2948 const struct ieee80211_cipher_scheme *cs;
2949 int headroom = IEEE80211_ENCRYPT_HEADROOM;
2950 int i;
2951
2952 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
2953 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
2954 iftype);
2955
2956 if (cs && headroom < cs->hdr_len)
2957 headroom = cs->hdr_len;
2958 }
2959
2960 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
2961 if (cs && headroom < cs->hdr_len)
2962 headroom = cs->hdr_len;
2963
2964 return headroom;
2965}
a7022e65
FF		 2966
2967static bool
2968ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
2969{
2970 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
2971 int skip;
2972
2973 if (end > 0)
2974 return false;
2975
519ee691
JD		 2976 /* One shot NOA */
2977 if (data->count[i] == 1)
2978 return false;
2979
2980 if (data->desc[i].interval == 0)
2981 return false;
2982
a7022e65
FF		 2983 /* End time is in the past, check for repetitions */
2984 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
2985 if (data->count[i] < 255) {
2986 if (data->count[i] <= skip) {
2987 data->count[i] = 0;
2988 return false;
2989 }
2990
2991 data->count[i] -= skip;
2992 }
2993
2994 data->desc[i].start += skip * data->desc[i].interval;
2995
2996 return true;
2997}
2998
2999static bool
3000ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3001 s32 *offset)
3002{
3003 bool ret = false;
3004 int i;
3005
3006 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3007 s32 cur;
3008
3009 if (!data->count[i])
3010 continue;
3011
3012 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3013 ret = true;
3014
3015 cur = data->desc[i].start - tsf;
3016 if (cur > *offset)
3017 continue;
3018
3019 cur = data->desc[i].start + data->desc[i].duration - tsf;
3020 if (cur > *offset)
3021 *offset = cur;
3022 }
3023
3024 return ret;
3025}
3026
3027static u32
3028ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3029{
3030 s32 offset = 0;
3031 int tries = 0;
3032 /*
3033 * arbitrary limit, used to avoid infinite loops when combined NoA
3034 * descriptors cover the full time period.
3035 */
3036 int max_tries = 5;
3037
3038 ieee80211_extend_absent_time(data, tsf, &offset);
3039 do {
3040 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3041 break;
3042
3043 tries++;
3044 } while (tries < max_tries);
3045
3046 return offset;
3047}
3048
3049void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3050{
3051 u32 next_offset = BIT(31) - 1;
3052 int i;
3053
3054 data->absent = 0;
3055 data->has_next_tsf = false;
3056 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3057 s32 start;
3058
3059 if (!data->count[i])
3060 continue;
3061
3062 ieee80211_extend_noa_desc(data, tsf, i);
3063 start = data->desc[i].start - tsf;
3064 if (start <= 0)
3065 data->absent |= BIT(i);
3066
3067 if (next_offset > start)
3068 next_offset = start;
3069
3070 data->has_next_tsf = true;
3071 }
3072
3073 if (data->absent)
3074 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3075
3076 data->next_tsf = tsf + next_offset;
3077}
3078EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3079
3080int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3081 struct ieee80211_noa_data *data, u32 tsf)
3082{
3083 int ret = 0;
3084 int i;
3085
3086 memset(data, 0, sizeof(*data));
3087
3088 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3089 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3090
3091 if (!desc->count || !desc->duration)
3092 continue;
3093
3094 data->count[i] = desc->count;
3095 data->desc[i].start = le32_to_cpu(desc->start_time);
3096 data->desc[i].duration = le32_to_cpu(desc->duration);
3097 data->desc[i].interval = le32_to_cpu(desc->interval);
3098
3099 if (data->count[i] > 1 &&
3100 data->desc[i].interval < data->desc[i].duration)
3101 continue;
3102
3103 ieee80211_extend_noa_desc(data, tsf, i);
3104 ret++;
3105 }
3106
3107 if (ret)
3108 ieee80211_update_p2p_noa(data, tsf);
3109
3110 return ret;
3111}
3112EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
057d5f4b
TP		 3113
3114void ieee80211_recalc_dtim(struct ieee80211_local *local,
3115 struct ieee80211_sub_if_data *sdata)
3116{
3117 u64 tsf = drv_get_tsf(local, sdata);
3118 u64 dtim_count = 0;
3119 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3120 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3121 struct ps_data *ps;
3122 u8 bcns_from_dtim;
3123
3124 if (tsf == -1ULL || !beacon_int || !dtim_period)
3125 return;
3126
3127 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3128 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3129 if (!sdata->bss)
3130 return;
3131
3132 ps = &sdata->bss->ps;
3133 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3134 ps = &sdata->u.mesh.ps;
3135 } else {
3136 return;
3137 }
3138
3139 /*
3140 * actually finds last dtim_count, mac80211 will update in
3141 * __beacon_add_tim().
3142 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3143 */
3144 do_div(tsf, beacon_int);
3145 bcns_from_dtim = do_div(tsf, dtim_period);
3146 /* just had a DTIM */
3147 if (!bcns_from_dtim)
3148 dtim_count = 0;
3149 else
3150 dtim_count = dtim_period - bcns_from_dtim;
3151
3152 ps->dtim_count = dtim_count;
3153}
73de86a3 3154
71e6195e
MK		 3155static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3156 struct ieee80211_chanctx *ctx)
3157{
3158 struct ieee80211_sub_if_data *sdata;
3159 u8 radar_detect = 0;
3160
3161 lockdep_assert_held(&local->chanctx_mtx);
3162
3163 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3164 return 0;
3165
3166 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
3167 if (sdata->reserved_radar_required)
3168 radar_detect |= BIT(sdata->reserved_chandef.width);
3169
3170 /*
3171 * An in-place reservation context should not have any assigned vifs
3172 * until it replaces the other context.
3173 */
3174 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
3175 !list_empty(&ctx->assigned_vifs));
3176
3177 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
3178 if (sdata->radar_required)
3179 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
3180
3181 return radar_detect;
3182}
3183
73de86a3
LC		 3184int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
3185 const struct cfg80211_chan_def *chandef,
3186 enum ieee80211_chanctx_mode chanmode,
3187 u8 radar_detect)
3188{
3189 struct ieee80211_local *local = sdata->local;
3190 struct ieee80211_sub_if_data *sdata_iter;
3191 enum nl80211_iftype iftype = sdata->wdev.iftype;
3192 int num[NUM_NL80211_IFTYPES];
3193 struct ieee80211_chanctx *ctx;
b6a55015 3194 int num_different_channels = 0;
73de86a3
LC		 3195 int total = 1;
3196
3197 lockdep_assert_held(&local->chanctx_mtx);
3198
3199 if (WARN_ON(hweight32(radar_detect) > 1))
3200 return -EINVAL;
3201
b6a55015
LC		 3202 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
3203 !chandef->chan))
73de86a3
LC		 3204 return -EINVAL;
3205
b6a55015
LC		 3206 if (chandef)
3207 num_different_channels = 1;
3208
73de86a3
LC		 3209 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
3210 return -EINVAL;
3211
3212 /* Always allow software iftypes */
3213 if (local->hw.wiphy->software_iftypes & BIT(iftype)) {
3214 if (radar_detect)
3215 return -EINVAL;
3216 return 0;
3217 }
3218
3219 memset(num, 0, sizeof(num));
3220
3221 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
3222 num[iftype] = 1;
3223
3224 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3225 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3226 continue;
71e6195e 3227 radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
73de86a3
LC		 3228 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
3229 num_different_channels++;
3230 continue;
3231 }
b6a55015 3232 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
73de86a3
LC		 3233 cfg80211_chandef_compatible(chandef,
3234 &ctx->conf.def))
3235 continue;
3236 num_different_channels++;
3237 }
3238
3239 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
3240 struct wireless_dev *wdev_iter;
3241
3242 wdev_iter = &sdata_iter->wdev;
3243
3244 if (sdata_iter == sdata ||
0f611d28 3245 !ieee80211_sdata_running(sdata_iter) ||
73de86a3
LC		 3246 local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
3247 continue;
3248
3249 num[wdev_iter->iftype]++;
3250 total++;
3251 }
3252
3253 if (total == 1 && !radar_detect)
3254 return 0;
3255
3256 return cfg80211_check_combinations(local->hw.wiphy,
3257 num_different_channels,
3258 radar_detect, num);
3259}
6fa001bc
MK		 3260
3261static void
3262ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
3263 void *data)
3264{
3265 u32 *max_num_different_channels = data;
3266
3267 *max_num_different_channels = max(*max_num_different_channels,
3268 c->num_different_channels);
3269}
3270
3271int ieee80211_max_num_channels(struct ieee80211_local *local)
3272{
3273 struct ieee80211_sub_if_data *sdata;
3274 int num[NUM_NL80211_IFTYPES] = {};
3275 struct ieee80211_chanctx *ctx;
3276 int num_different_channels = 0;
3277 u8 radar_detect = 0;
3278 u32 max_num_different_channels = 1;
3279 int err;
3280
3281 lockdep_assert_held(&local->chanctx_mtx);
3282
3283 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3284 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3285 continue;
3286
6fa001bc
MK		 3287 num_different_channels++;
3288
71e6195e 3289 radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
6fa001bc
MK		 3290 }
3291
3292 list_for_each_entry_rcu(sdata, &local->interfaces, list)
3293 num[sdata->wdev.iftype]++;
3294
3295 err = cfg80211_iter_combinations(local->hw.wiphy,
3296 num_different_channels, radar_detect,
3297 num, ieee80211_iter_max_chans,
3298 &max_num_different_channels);
3299 if (err < 0)
3300 return err;
3301
3302 return max_num_different_channels;
3303}
40b861a0
AN		 3304
3305u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
3306{
3307 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
3308 *buf++ = 7; /* len */
3309 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
3310 *buf++ = 0x50;
3311 *buf++ = 0xf2;
3312 *buf++ = 2; /* WME */
3313 *buf++ = 0; /* WME info */
3314 *buf++ = 1; /* WME ver */
3315 *buf++ = qosinfo; /* U-APSD no in use */
3316
3317 return buf;
3318}
ba8c3d6f
FF		 3319
3320void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
3321 struct sta_info *sta,
3322 struct txq_info *txqi, int tid)
3323{
3324 skb_queue_head_init(&txqi->queue);
3325 txqi->txq.vif = &sdata->vif;
3326
3327 if (sta) {
3328 txqi->txq.sta = &sta->sta;
3329 sta->sta.txq[tid] = &txqi->txq;
4d57c678 3330 txqi->txq.tid = tid;
ba8c3d6f
FF		 3331 txqi->txq.ac = ieee802_1d_to_ac[tid & 7];
3332 } else {
3333 sdata->vif.txq = &txqi->txq;
4d57c678 3334 txqi->txq.tid = 0;
ba8c3d6f
FF		 3335 txqi->txq.ac = IEEE80211_AC_BE;
3336 }
3337}
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