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mac80211: Remove WARN_ON_ONCE in ieee80211_recalc_smps
[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;
1668 local->started = false;
7584f88f 1669 local->in_reconfig = false;
f6837ba8
JB		 1670
1671 /* scheduled scan clearly can't be running any more, but tell
1672 * cfg80211 and clear local state
1673 */
1674 ieee80211_sched_scan_end(local);
1675
1676 list_for_each_entry(sdata, &local->interfaces, list)
1677 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
1678
1679 /* Mark channel contexts as not being in the driver any more to avoid
1680 * removing them from the driver during the shutdown process...
1681 */
1682 mutex_lock(&local->chanctx_mtx);
1683 list_for_each_entry(ctx, &local->chanctx_list, list)
1684 ctx->driver_present = false;
1685 mutex_unlock(&local->chanctx_mtx);
1686
1687 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
1688}
1689
153a5fc4
SG		 1690static void ieee80211_assign_chanctx(struct ieee80211_local *local,
1691 struct ieee80211_sub_if_data *sdata)
1692{
1693 struct ieee80211_chanctx_conf *conf;
1694 struct ieee80211_chanctx *ctx;
1695
1696 if (!local->use_chanctx)
1697 return;
1698
1699 mutex_lock(&local->chanctx_mtx);
1700 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1701 lockdep_is_held(&local->chanctx_mtx));
1702 if (conf) {
1703 ctx = container_of(conf, struct ieee80211_chanctx, conf);
1704 drv_assign_vif_chanctx(local, sdata, ctx);
1705 }
1706 mutex_unlock(&local->chanctx_mtx);
1707}
1708
f2753ddb
JB		 1709int ieee80211_reconfig(struct ieee80211_local *local)
1710{
1711 struct ieee80211_hw *hw = &local->hw;
1712 struct ieee80211_sub_if_data *sdata;
55de908a 1713 struct ieee80211_chanctx *ctx;
f2753ddb 1714 struct sta_info *sta;
2683d65b 1715 int res, i;
d888130a 1716 bool reconfig_due_to_wowlan = false;
d43c6b6e 1717 struct ieee80211_sub_if_data *sched_scan_sdata;
6ea0a69c 1718 struct cfg80211_sched_scan_request *sched_scan_req;
d43c6b6e 1719 bool sched_scan_stopped = false;
b0485e9f 1720 bool suspended = local->suspended;
d888130a 1721
0f8b8245
EP		 1722 /* nothing to do if HW shouldn't run */
1723 if (!local->open_count)
1724 goto wake_up;
1725
8f21b0ad 1726#ifdef CONFIG_PM
b0485e9f 1727 if (suspended)
ceb99fe0 1728 local->resuming = true;
f2753ddb 1729
eecc4800 1730 if (local->wowlan) {
b0485e9f
EP		 1731 /*
1732 * In the wowlan case, both mac80211 and the device
1733 * are functional when the resume op is called, so
1734 * clear local->suspended so the device could operate
1735 * normally (e.g. pass rx frames).
1736 */
1737 local->suspended = false;
eecc4800 1738 res = drv_resume(local);
27b3eb9c 1739 local->wowlan = false;
eecc4800
JB		 1740 if (res < 0) {
1741 local->resuming = false;
1742 return res;
1743 }
1744 if (res == 0)
1745 goto wake_up;
1746 WARN_ON(res > 1);
1747 /*
1748 * res is 1, which means the driver requested
1749 * to go through a regular reset on wakeup.
b0485e9f 1750 * restore local->suspended in this case.
eecc4800 1751 */
d888130a 1752 reconfig_due_to_wowlan = true;
b0485e9f 1753 local->suspended = true;
eecc4800
JB		 1754 }
1755#endif
f2753ddb 1756
43d6df00
EP		 1757 /*
1758 * In case of hw_restart during suspend (without wowlan),
1759 * cancel restart work, as we are reconfiguring the device
1760 * anyway.
1761 * Note that restart_work is scheduled on a frozen workqueue,
1762 * so we can't deadlock in this case.
1763 */
1764 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
1765 cancel_work_sync(&local->restart_work);
1766
94f9b97b
JB		 1767 /*
1768 * Upon resume hardware can sometimes be goofy due to
1769 * various platform / driver / bus issues, so restarting
1770 * the device may at times not work immediately. Propagate
1771 * the error.
1772 */
1773 res = drv_start(local);
1774 if (res) {
b0485e9f 1775 if (suspended)
f6837ba8
JB		 1776 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
1777 else
1778 WARN(1, "Hardware became unavailable during restart.\n");
1779 ieee80211_handle_reconfig_failure(local);
94f9b97b 1780 return res;
f2753ddb
JB		 1781 }
1782
7f281975
YAP		 1783 /* setup fragmentation threshold */
1784 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
1785
1786 /* setup RTS threshold */
1787 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
1788
1789 /* reset coverage class */
1790 drv_set_coverage_class(local, hw->wiphy->coverage_class);
1791
94f9b97b
JB		 1792 ieee80211_led_radio(local, true);
1793 ieee80211_mod_tpt_led_trig(local,
1794 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
1795
f2753ddb 1796 /* add interfaces */
4b6f1dd6
JB		 1797 sdata = rtnl_dereference(local->monitor_sdata);
1798 if (sdata) {
3c3e21e7
JB		 1799 /* in HW restart it exists already */
1800 WARN_ON(local->resuming);
4b6f1dd6
JB		 1801 res = drv_add_interface(local, sdata);
1802 if (WARN_ON(res)) {
0c2bef46 1803 RCU_INIT_POINTER(local->monitor_sdata, NULL);
4b6f1dd6
JB		 1804 synchronize_net();
1805 kfree(sdata);
1806 }
1807 }
1808
f2753ddb
JB		 1809 list_for_each_entry(sdata, &local->interfaces, list) {
1810 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1811 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
c8fff3dc 1812 ieee80211_sdata_running(sdata)) {
7b7eab6f 1813 res = drv_add_interface(local, sdata);
c8fff3dc
LC		 1814 if (WARN_ON(res))
1815 break;
1816 }
1817 }
1818
1819 /* If adding any of the interfaces failed above, roll back and
1820 * report failure.
1821 */
1822 if (res) {
1823 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
1824 list)
1825 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1826 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1827 ieee80211_sdata_running(sdata))
1828 drv_remove_interface(local, sdata);
1829 ieee80211_handle_reconfig_failure(local);
1830 return res;
f2753ddb
JB		 1831 }
1832
55de908a 1833 /* add channel contexts */
f0dea9c7
AS		 1834 if (local->use_chanctx) {
1835 mutex_lock(&local->chanctx_mtx);
1836 list_for_each_entry(ctx, &local->chanctx_list, list)
5bcae31d
MK		 1837 if (ctx->replace_state !=
1838 IEEE80211_CHANCTX_REPLACES_OTHER)
1839 WARN_ON(drv_add_chanctx(local, ctx));
f0dea9c7 1840 mutex_unlock(&local->chanctx_mtx);
55de908a 1841
7df180f7
ZG		 1842 list_for_each_entry(sdata, &local->interfaces, list) {
1843 if (!ieee80211_sdata_running(sdata))
1844 continue;
1845 ieee80211_assign_chanctx(local, sdata);
1846 }
6352c87f 1847
7df180f7
ZG		 1848 sdata = rtnl_dereference(local->monitor_sdata);
1849 if (sdata && ieee80211_sdata_running(sdata))
1850 ieee80211_assign_chanctx(local, sdata);
1851 }
fe5f2559 1852
f2753ddb 1853 /* add STAs back */
34e89507
JB		 1854 mutex_lock(&local->sta_mtx);
1855 list_for_each_entry(sta, &local->sta_list, list) {
2e8d397e 1856 enum ieee80211_sta_state state;
f09603a2 1857
2e8d397e
AN		 1858 if (!sta->uploaded)
1859 continue;
1860
1861 /* AP-mode stations will be added later */
1862 if (sta->sdata->vif.type == NL80211_IFTYPE_AP)
1863 continue;
1864
1865 for (state = IEEE80211_STA_NOTEXIST;
1866 state < sta->sta_state; state++)
1867 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1868 state + 1));
f2753ddb 1869 }
34e89507 1870 mutex_unlock(&local->sta_mtx);
f2753ddb 1871
2683d65b 1872 /* reconfigure tx conf */
54bcbc69
JB		 1873 if (hw->queues >= IEEE80211_NUM_ACS) {
1874 list_for_each_entry(sdata, &local->interfaces, list) {
1875 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1876 sdata->vif.type == NL80211_IFTYPE_MONITOR ||
1877 !ieee80211_sdata_running(sdata))
1878 continue;
f6f3def3 1879
54bcbc69
JB		 1880 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1881 drv_conf_tx(local, sdata, i,
1882 &sdata->tx_conf[i]);
1883 }
f6f3def3 1884 }
2683d65b 1885
f2753ddb
JB		 1886 /* reconfigure hardware */
1887 ieee80211_hw_config(local, ~0);
1888
f2753ddb 1889 ieee80211_configure_filter(local);
f2753ddb
JB		 1890
1891 /* Finally also reconfigure all the BSS information */
1892 list_for_each_entry(sdata, &local->interfaces, list) {
ac8dd506
JB		 1893 u32 changed;
1894
9607e6b6 1895 if (!ieee80211_sdata_running(sdata))
f2753ddb 1896 continue;
ac8dd506
JB		 1897
1898 /* common change flags for all interface types */
1899 changed = BSS_CHANGED_ERP_CTS_PROT |
1900 BSS_CHANGED_ERP_PREAMBLE |
1901 BSS_CHANGED_ERP_SLOT |
1902 BSS_CHANGED_HT |
1903 BSS_CHANGED_BASIC_RATES |
1904 BSS_CHANGED_BEACON_INT |
1905 BSS_CHANGED_BSSID |
4ced3f74 1906 BSS_CHANGED_CQM |
55de47f6 1907 BSS_CHANGED_QOS |
1ea6f9c0
JB		 1908 BSS_CHANGED_IDLE |
1909 BSS_CHANGED_TXPOWER;
ac8dd506 1910
f2753ddb
JB		 1911 switch (sdata->vif.type) {
1912 case NL80211_IFTYPE_STATION:
0d392e93 1913 changed |= BSS_CHANGED_ASSOC |
ab095877
EP		 1914 BSS_CHANGED_ARP_FILTER |
1915 BSS_CHANGED_PS;
c65dd147 1916
989c6505
AB		 1917 /* Re-send beacon info report to the driver */
1918 if (sdata->u.mgd.have_beacon)
1919 changed |= BSS_CHANGED_BEACON_INFO;
c65dd147 1920
8d61ffa5 1921 sdata_lock(sdata);
ac8dd506 1922 ieee80211_bss_info_change_notify(sdata, changed);
8d61ffa5 1923 sdata_unlock(sdata);
ac8dd506 1924 break;
6e0bd6c3 1925 case NL80211_IFTYPE_OCB:
239281f8
RL		 1926 changed |= BSS_CHANGED_OCB;
1927 ieee80211_bss_info_change_notify(sdata, changed);
6e0bd6c3 1928 break;
f2753ddb 1929 case NL80211_IFTYPE_ADHOC:
ac8dd506
JB		 1930 changed |= BSS_CHANGED_IBSS;
1931 /* fall through */
f2753ddb 1932 case NL80211_IFTYPE_AP:
339afbf4 1933 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
e7979ac7 1934
1041638f 1935 if (sdata->vif.type == NL80211_IFTYPE_AP) {
e7979ac7
AN		 1936 changed |= BSS_CHANGED_AP_PROBE_RESP;
1937
1041638f
JB		 1938 if (rcu_access_pointer(sdata->u.ap.beacon))
1939 drv_start_ap(local, sdata);
1940 }
1941
7827493b 1942 /* fall through */
f2753ddb 1943 case NL80211_IFTYPE_MESH_POINT:
8da34932
JB		 1944 if (sdata->vif.bss_conf.enable_beacon) {
1945 changed |= BSS_CHANGED_BEACON |
1946 BSS_CHANGED_BEACON_ENABLED;
1947 ieee80211_bss_info_change_notify(sdata, changed);
1948 }
f2753ddb
JB		 1949 break;
1950 case NL80211_IFTYPE_WDS:
f2753ddb
JB		 1951 case NL80211_IFTYPE_AP_VLAN:
1952 case NL80211_IFTYPE_MONITOR:
98104fde 1953 case NL80211_IFTYPE_P2P_DEVICE:
b205786e 1954 /* nothing to do */
f142c6b9 1955 break;
f2753ddb 1956 case NL80211_IFTYPE_UNSPECIFIED:
2e161f78 1957 case NUM_NL80211_IFTYPES:
2ca27bcf
JB		 1958 case NL80211_IFTYPE_P2P_CLIENT:
1959 case NL80211_IFTYPE_P2P_GO:
f2753ddb
JB		 1960 WARN_ON(1);
1961 break;
1962 }
1963 }
1964
4a733ef1 1965 ieee80211_recalc_ps(local);
8e1b23b9 1966
6e1b1b24
EP		 1967 /*
1968 * The sta might be in psm against the ap (e.g. because
1969 * this was the state before a hw restart), so we
1970 * explicitly send a null packet in order to make sure
1971 * it'll sync against the ap (and get out of psm).
1972 */
1973 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
1974 list_for_each_entry(sdata, &local->interfaces, list) {
1975 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1976 continue;
20f544ee
JB		 1977 if (!sdata->u.mgd.associated)
1978 continue;
6e1b1b24 1979
076cdcb1 1980 ieee80211_send_nullfunc(local, sdata, false);
6e1b1b24
EP		 1981 }
1982 }
1983
2e8d397e
AN		 1984 /* APs are now beaconing, add back stations */
1985 mutex_lock(&local->sta_mtx);
1986 list_for_each_entry(sta, &local->sta_list, list) {
1987 enum ieee80211_sta_state state;
1988
1989 if (!sta->uploaded)
1990 continue;
1991
1992 if (sta->sdata->vif.type != NL80211_IFTYPE_AP)
1993 continue;
1994
1995 for (state = IEEE80211_STA_NOTEXIST;
1996 state < sta->sta_state; state++)
1997 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1998 state + 1));
1999 }
2000 mutex_unlock(&local->sta_mtx);
2001
7b21aea0 2002 /* add back keys */
f9dca80b
MK		 2003 list_for_each_entry(sdata, &local->interfaces, list)
2004 ieee80211_reset_crypto_tx_tailroom(sdata);
2005
7b21aea0
ES		 2006 list_for_each_entry(sdata, &local->interfaces, list)
2007 if (ieee80211_sdata_running(sdata))
2008 ieee80211_enable_keys(sdata);
2009
c6209488 2010 wake_up:
04800ada
AN		 2011 local->in_reconfig = false;
2012 barrier();
2013
3c3e21e7
JB		 2014 if (local->monitors == local->open_count && local->monitors > 0)
2015 ieee80211_add_virtual_monitor(local);
2016
2a419056
JB		 2017 /*
2018 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2019 * sessions can be established after a resume.
2020 *
2021 * Also tear down aggregation sessions since reconfiguring
2022 * them in a hardware restart scenario is not easily done
2023 * right now, and the hardware will have lost information
2024 * about the sessions, but we and the AP still think they
2025 * are active. This is really a workaround though.
2026 */
30686bf7 2027 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2a419056
JB		 2028 mutex_lock(&local->sta_mtx);
2029
2030 list_for_each_entry(sta, &local->sta_list, list) {
27392719
EP		 2031 if (!local->resuming)
2032 ieee80211_sta_tear_down_BA_sessions(
2033 sta, AGG_STOP_LOCAL_REQUEST);
c2c98fde 2034 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
74e2bd1f 2035 }
2a419056
JB		 2036
2037 mutex_unlock(&local->sta_mtx);
74e2bd1f 2038 }
74e2bd1f 2039
445ea4e8 2040 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 2041 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2042 false);
f2753ddb 2043
32769814
AN		 2044 /*
2045 * Reconfigure sched scan if it was interrupted by FW restart or
2046 * suspend.
2047 */
2048 mutex_lock(&local->mtx);
2049 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2050 lockdep_is_held(&local->mtx));
6ea0a69c
JB		 2051 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2052 lockdep_is_held(&local->mtx));
2053 if (sched_scan_sdata && sched_scan_req)
32769814
AN		 2054 /*
2055 * Sched scan stopped, but we don't want to report it. Instead,
e2845c45
AS		 2056 * we're trying to reschedule. However, if more than one scan
2057 * plan was set, we cannot reschedule since we don't know which
2058 * scan plan was currently running (and some scan plans may have
2059 * already finished).
32769814 2060 */
e2845c45
AS		 2061 if (sched_scan_req->n_scan_plans > 1 ||
2062 __ieee80211_request_sched_scan_start(sched_scan_sdata,
6ea0a69c 2063 sched_scan_req))
32769814
AN		 2064 sched_scan_stopped = true;
2065 mutex_unlock(&local->mtx);
2066
2067 if (sched_scan_stopped)
e669ba2d 2068 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy);
32769814 2069
5bb644a0
JB		 2070 /*
2071 * If this is for hw restart things are still running.
2072 * We may want to change that later, however.
2073 */
b0485e9f 2074 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
cf2c92d8 2075 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
8f21b0ad 2076
b0485e9f 2077 if (!suspended)
5bb644a0
JB		 2078 return 0;
2079
2080#ifdef CONFIG_PM
ceb99fe0 2081 /* first set suspended false, then resuming */
5bb644a0 2082 local->suspended = false;
ceb99fe0
JB		 2083 mb();
2084 local->resuming = false;
5bb644a0 2085
9120d94e
LC		 2086 /* It's possible that we don't handle the scan completion in
2087 * time during suspend, so if it's still marked as completed
2088 * here, queue the work and flush it to clean things up.
2089 * Instead of calling the worker function directly here, we
2090 * really queue it to avoid potential races with other flows
2091 * scheduling the same work.
2092 */
2093 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2094 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2095 flush_delayed_work(&local->scan_work);
2096 }
2097
0f8b8245 2098 if (local->open_count && !reconfig_due_to_wowlan)
cf2c92d8
EP		 2099 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2100
b8360ab8
JB		 2101 list_for_each_entry(sdata, &local->interfaces, list) {
2102 if (!ieee80211_sdata_running(sdata))
2103 continue;
2104 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2105 ieee80211_sta_restart(sdata);
2106 }
2107
26d59535 2108 mod_timer(&local->sta_cleanup, jiffies + 1);
5bb644a0
JB		 2109#else
2110 WARN_ON(1);
2111#endif
d43c6b6e 2112
f2753ddb
JB		 2113 return 0;
2114}
42935eca 2115
95acac61
JB		 2116void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2117{
2118 struct ieee80211_sub_if_data *sdata;
2119 struct ieee80211_local *local;
2120 struct ieee80211_key *key;
2121
2122 if (WARN_ON(!vif))
2123 return;
2124
2125 sdata = vif_to_sdata(vif);
2126 local = sdata->local;
2127
2128 if (WARN_ON(!local->resuming))
2129 return;
2130
2131 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2132 return;
2133
2134 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2135
2136 mutex_lock(&local->key_mtx);
2137 list_for_each_entry(key, &sdata->key_list, list)
2138 key->flags |= KEY_FLAG_TAINTED;
2139 mutex_unlock(&local->key_mtx);
2140}
2141EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2142
04ecd257 2143void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
0f78231b 2144{
04ecd257
JB		 2145 struct ieee80211_local *local = sdata->local;
2146 struct ieee80211_chanctx_conf *chanctx_conf;
2147 struct ieee80211_chanctx *chanctx;
025e6be2 2148
04ecd257 2149 mutex_lock(&local->chanctx_mtx);
0f78231b 2150
04ecd257
JB		 2151 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2152 lockdep_is_held(&local->chanctx_mtx));
0f78231b 2153
c189a685
AO		 2154 /*
2155 * This function can be called from a work, thus it may be possible
2156 * that the chanctx_conf is removed (due to a disconnection, for
2157 * example).
2158 * So nothing should be done in such case.
2159 */
2160 if (!chanctx_conf)
5d8e4237 2161 goto unlock;
0f78231b 2162
04ecd257
JB		 2163 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2164 ieee80211_recalc_smps_chanctx(local, chanctx);
5d8e4237 2165 unlock:
04ecd257 2166 mutex_unlock(&local->chanctx_mtx);
0f78231b 2167}
8e664fb3 2168
21f659bf
EP		 2169void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2170{
2171 struct ieee80211_local *local = sdata->local;
2172 struct ieee80211_chanctx_conf *chanctx_conf;
2173 struct ieee80211_chanctx *chanctx;
2174
2175 mutex_lock(&local->chanctx_mtx);
2176
2177 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2178 lockdep_is_held(&local->chanctx_mtx));
2179
2180 if (WARN_ON_ONCE(!chanctx_conf))
2181 goto unlock;
2182
2183 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2184 ieee80211_recalc_chanctx_min_def(local, chanctx);
2185 unlock:
2186 mutex_unlock(&local->chanctx_mtx);
2187}
2188
8e664fb3
JB		 2189size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2190{
2191 size_t pos = offset;
2192
2193 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2194 pos += 2 + ies[pos + 1];
2195
2196 return pos;
2197}
615f7b9b
MV		 2198
2199static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2200 int rssi_min_thold,
2201 int rssi_max_thold)
2202{
2203 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2204
2205 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2206 return;
2207
2208 /*
2209 * Scale up threshold values before storing it, as the RSSI averaging
2210 * algorithm uses a scaled up value as well. Change this scaling
2211 * factor if the RSSI averaging algorithm changes.
2212 */
2213 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2214 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2215}
2216
2217void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2218 int rssi_min_thold,
2219 int rssi_max_thold)
2220{
2221 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2222
2223 WARN_ON(rssi_min_thold == rssi_max_thold ||
2224 rssi_min_thold > rssi_max_thold);
2225
2226 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2227 rssi_max_thold);
2228}
2229EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2230
2231void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2232{
2233 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2234
2235 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2236}
2237EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
768db343 2238
ef96a842 2239u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
42e7aa77
AS		 2240 u16 cap)
2241{
2242 __le16 tmp;
2243
2244 *pos++ = WLAN_EID_HT_CAPABILITY;
2245 *pos++ = sizeof(struct ieee80211_ht_cap);
2246 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2247
2248 /* capability flags */
2249 tmp = cpu_to_le16(cap);
2250 memcpy(pos, &tmp, sizeof(u16));
2251 pos += sizeof(u16);
2252
2253 /* AMPDU parameters */
ef96a842
BG		 2254 *pos++ = ht_cap->ampdu_factor |
2255 (ht_cap->ampdu_density <<
42e7aa77
AS		 2256 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2257
2258 /* MCS set */
ef96a842
BG		 2259 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2260 pos += sizeof(ht_cap->mcs);
42e7aa77
AS		 2261
2262 /* extended capabilities */
2263 pos += sizeof(__le16);
2264
2265 /* BF capabilities */
2266 pos += sizeof(__le32);
2267
2268 /* antenna selection */
2269 pos += sizeof(u8);
2270
2271 return pos;
2272}
2273
ba0afa2f 2274u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
cc3983d8 2275 u32 cap)
ba0afa2f
MP		 2276{
2277 __le32 tmp;
2278
2279 *pos++ = WLAN_EID_VHT_CAPABILITY;
d4950281
MP		 2280 *pos++ = sizeof(struct ieee80211_vht_cap);
2281 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
ba0afa2f
MP		 2282
2283 /* capability flags */
2284 tmp = cpu_to_le32(cap);
2285 memcpy(pos, &tmp, sizeof(u32));
2286 pos += sizeof(u32);
2287
2288 /* VHT MCS set */
2289 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2290 pos += sizeof(vht_cap->vht_mcs);
2291
2292 return pos;
2293}
2294
074d46d1 2295u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
4bf88530 2296 const struct cfg80211_chan_def *chandef,
431e3154 2297 u16 prot_mode)
42e7aa77 2298{
074d46d1 2299 struct ieee80211_ht_operation *ht_oper;
42e7aa77 2300 /* Build HT Information */
074d46d1
JB		 2301 *pos++ = WLAN_EID_HT_OPERATION;
2302 *pos++ = sizeof(struct ieee80211_ht_operation);
2303 ht_oper = (struct ieee80211_ht_operation *)pos;
4bf88530
JB		 2304 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2305 chandef->chan->center_freq);
2306 switch (chandef->width) {
2307 case NL80211_CHAN_WIDTH_160:
2308 case NL80211_CHAN_WIDTH_80P80:
2309 case NL80211_CHAN_WIDTH_80:
2310 case NL80211_CHAN_WIDTH_40:
2311 if (chandef->center_freq1 > chandef->chan->center_freq)
2312 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2313 else
2314 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
42e7aa77 2315 break;
42e7aa77 2316 default:
074d46d1 2317 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
42e7aa77
AS		 2318 break;
2319 }
aee286c2 2320 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4bf88530
JB		 2321 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2322 chandef->width != NL80211_CHAN_WIDTH_20)
074d46d1 2323 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
ff3cc5f4 2324
431e3154 2325 ht_oper->operation_mode = cpu_to_le16(prot_mode);
074d46d1 2326 ht_oper->stbc_param = 0x0000;
42e7aa77
AS		 2327
2328 /* It seems that Basic MCS set and Supported MCS set
2329 are identical for the first 10 bytes */
074d46d1
JB		 2330 memset(&ht_oper->basic_set, 0, 16);
2331 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
42e7aa77 2332
074d46d1 2333 return pos + sizeof(struct ieee80211_ht_operation);
42e7aa77
AS		 2334}
2335
fb28ec0c
AN		 2336u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2337 const struct cfg80211_chan_def *chandef)
2338{
2339 struct ieee80211_vht_operation *vht_oper;
2340
2341 *pos++ = WLAN_EID_VHT_OPERATION;
2342 *pos++ = sizeof(struct ieee80211_vht_operation);
2343 vht_oper = (struct ieee80211_vht_operation *)pos;
2344 vht_oper->center_freq_seg1_idx = ieee80211_frequency_to_channel(
2345 chandef->center_freq1);
2346 if (chandef->center_freq2)
2347 vht_oper->center_freq_seg2_idx =
2348 ieee80211_frequency_to_channel(chandef->center_freq2);
f020ae40
CYY		 2349 else
2350 vht_oper->center_freq_seg2_idx = 0x00;
fb28ec0c
AN		 2351
2352 switch (chandef->width) {
2353 case NL80211_CHAN_WIDTH_160:
2354 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ;
2355 break;
2356 case NL80211_CHAN_WIDTH_80P80:
2357 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2358 break;
2359 case NL80211_CHAN_WIDTH_80:
2360 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2361 break;
2362 default:
2363 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2364 break;
2365 }
2366
2367 /* don't require special VHT peer rates */
2368 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2369
2370 return pos + sizeof(struct ieee80211_vht_operation);
2371}
2372
4bf88530 2373void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
4a3cb702 2374 const struct ieee80211_ht_operation *ht_oper,
4bf88530 2375 struct cfg80211_chan_def *chandef)
42e7aa77
AS		 2376{
2377 enum nl80211_channel_type channel_type;
2378
4bf88530
JB		 2379 if (!ht_oper) {
2380 cfg80211_chandef_create(chandef, control_chan,
2381 NL80211_CHAN_NO_HT);
2382 return;
2383 }
42e7aa77 2384
074d46d1 2385 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
42e7aa77
AS		 2386 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2387 channel_type = NL80211_CHAN_HT20;
2388 break;
2389 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2390 channel_type = NL80211_CHAN_HT40PLUS;
2391 break;
2392 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2393 channel_type = NL80211_CHAN_HT40MINUS;
2394 break;
2395 default:
2396 channel_type = NL80211_CHAN_NO_HT;
2397 }
2398
4bf88530 2399 cfg80211_chandef_create(chandef, control_chan, channel_type);
42e7aa77
AS		 2400}
2401
abcff6ef
JD		 2402void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan,
2403 const struct ieee80211_vht_operation *oper,
2404 struct cfg80211_chan_def *chandef)
2405{
2406 if (!oper)
2407 return;
2408
2409 chandef->chan = control_chan;
2410
2411 switch (oper->chan_width) {
2412 case IEEE80211_VHT_CHANWIDTH_USE_HT:
2413 break;
2414 case IEEE80211_VHT_CHANWIDTH_80MHZ:
2415 chandef->width = NL80211_CHAN_WIDTH_80;
2416 break;
2417 case IEEE80211_VHT_CHANWIDTH_160MHZ:
2418 chandef->width = NL80211_CHAN_WIDTH_160;
2419 break;
2420 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
2421 chandef->width = NL80211_CHAN_WIDTH_80P80;
2422 break;
2423 default:
2424 break;
2425 }
2426
2427 chandef->center_freq1 =
2428 ieee80211_channel_to_frequency(oper->center_freq_seg1_idx,
2429 control_chan->band);
2430 chandef->center_freq2 =
2431 ieee80211_channel_to_frequency(oper->center_freq_seg2_idx,
2432 control_chan->band);
2433}
2434
2103dec1
SW		 2435int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2436 const struct ieee80211_supported_band *sband,
2437 const u8 *srates, int srates_len, u32 *rates)
2438{
2439 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
2440 int shift = ieee80211_chandef_get_shift(chandef);
2441 struct ieee80211_rate *br;
2442 int brate, rate, i, j, count = 0;
2443
2444 *rates = 0;
2445
2446 for (i = 0; i < srates_len; i++) {
2447 rate = srates[i] & 0x7f;
2448
2449 for (j = 0; j < sband->n_bitrates; j++) {
2450 br = &sband->bitrates[j];
2451 if ((rate_flags & br->flags) != rate_flags)
2452 continue;
2453
2454 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2455 if (brate == rate) {
2456 *rates |= BIT(j);
2457 count++;
2458 break;
2459 }
2460 }
2461 }
2462 return count;
2463}
2464
fc8a7321 2465int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b
JB		 2466 struct sk_buff *skb, bool need_basic,
2467 enum ieee80211_band band)
768db343 2468{
768db343
AN		 2469 struct ieee80211_local *local = sdata->local;
2470 struct ieee80211_supported_band *sband;
2103dec1 2471 int rate, shift;
768db343 2472 u8 i, rates, *pos;
fc8a7321 2473 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1 2474 u32 rate_flags;
768db343 2475
2103dec1
SW		 2476 shift = ieee80211_vif_get_shift(&sdata->vif);
2477 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
6b77863b 2478 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2479 rates = 0;
2480 for (i = 0; i < sband->n_bitrates; i++) {
2481 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2482 continue;
2483 rates++;
2484 }
768db343
AN		 2485 if (rates > 8)
2486 rates = 8;
2487
2488 if (skb_tailroom(skb) < rates + 2)
2489 return -ENOMEM;
2490
2491 pos = skb_put(skb, rates + 2);
2492 *pos++ = WLAN_EID_SUPP_RATES;
2493 *pos++ = rates;
2494 for (i = 0; i < rates; i++) {
657c3e0c 2495 u8 basic = 0;
2103dec1
SW		 2496 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2497 continue;
2498
657c3e0c
AN		 2499 if (need_basic && basic_rates & BIT(i))
2500 basic = 0x80;
768db343 2501 rate = sband->bitrates[i].bitrate;
2103dec1
SW		 2502 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2503 5 * (1 << shift));
2504 *pos++ = basic | (u8) rate;
768db343
AN		 2505 }
2506
2507 return 0;
2508}
2509
fc8a7321 2510int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b
JB		 2511 struct sk_buff *skb, bool need_basic,
2512 enum ieee80211_band band)
768db343 2513{
768db343
AN		 2514 struct ieee80211_local *local = sdata->local;
2515 struct ieee80211_supported_band *sband;
cc63ec76 2516 int rate, shift;
768db343 2517 u8 i, exrates, *pos;
fc8a7321 2518 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1
SW		 2519 u32 rate_flags;
2520
2521 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2522 shift = ieee80211_vif_get_shift(&sdata->vif);
768db343 2523
6b77863b 2524 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2525 exrates = 0;
2526 for (i = 0; i < sband->n_bitrates; i++) {
2527 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2528 continue;
2529 exrates++;
2530 }
2531
768db343
AN		 2532 if (exrates > 8)
2533 exrates -= 8;
2534 else
2535 exrates = 0;
2536
2537 if (skb_tailroom(skb) < exrates + 2)
2538 return -ENOMEM;
2539
2540 if (exrates) {
2541 pos = skb_put(skb, exrates + 2);
2542 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2543 *pos++ = exrates;
2544 for (i = 8; i < sband->n_bitrates; i++) {
657c3e0c 2545 u8 basic = 0;
2103dec1
SW		 2546 if ((rate_flags & sband->bitrates[i].flags)
2547 != rate_flags)
2548 continue;
657c3e0c
AN		 2549 if (need_basic && basic_rates & BIT(i))
2550 basic = 0x80;
2103dec1
SW		 2551 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2552 5 * (1 << shift));
2553 *pos++ = basic | (u8) rate;
768db343
AN		 2554 }
2555 }
2556 return 0;
2557}
1dae27f8
WYG		 2558
2559int ieee80211_ave_rssi(struct ieee80211_vif *vif)
2560{
2561 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2562 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2563
be6bcabc
WYG		 2564 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
2565 /* non-managed type inferfaces */
2566 return 0;
2567 }
338c17ae 2568 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
1dae27f8 2569}
0d8a0a17 2570EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
04ecd257
JB		 2571
2572u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
2573{
2574 if (!mcs)
2575 return 1;
2576
2577 /* TODO: consider rx_highest */
2578
2579 if (mcs->rx_mask[3])
2580 return 4;
2581 if (mcs->rx_mask[2])
2582 return 3;
2583 if (mcs->rx_mask[1])
2584 return 2;
2585 return 1;
2586}
f4bda337
TP		 2587
2588/**
2589 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
2590 * @local: mac80211 hw info struct
2591 * @status: RX status
2592 * @mpdu_len: total MPDU length (including FCS)
2593 * @mpdu_offset: offset into MPDU to calculate timestamp at
2594 *
2595 * This function calculates the RX timestamp at the given MPDU offset, taking
2596 * into account what the RX timestamp was. An offset of 0 will just normalize
2597 * the timestamp to TSF at beginning of MPDU reception.
2598 */
2599u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
2600 struct ieee80211_rx_status *status,
2601 unsigned int mpdu_len,
2602 unsigned int mpdu_offset)
2603{
2604 u64 ts = status->mactime;
2605 struct rate_info ri;
2606 u16 rate;
2607
2608 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
2609 return 0;
2610
2611 memset(&ri, 0, sizeof(ri));
2612
2613 /* Fill cfg80211 rate info */
2614 if (status->flag & RX_FLAG_HT) {
2615 ri.mcs = status->rate_idx;
2616 ri.flags |= RATE_INFO_FLAGS_MCS;
2617 if (status->flag & RX_FLAG_40MHZ)
b51f3bee
JB		 2618 ri.bw = RATE_INFO_BW_40;
2619 else
2620 ri.bw = RATE_INFO_BW_20;
f4bda337
TP		 2621 if (status->flag & RX_FLAG_SHORT_GI)
2622 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
5614618e
JB		 2623 } else if (status->flag & RX_FLAG_VHT) {
2624 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
2625 ri.mcs = status->rate_idx;
2626 ri.nss = status->vht_nss;
2627 if (status->flag & RX_FLAG_40MHZ)
b51f3bee
JB		 2628 ri.bw = RATE_INFO_BW_40;
2629 else if (status->vht_flag & RX_VHT_FLAG_80MHZ)
2630 ri.bw = RATE_INFO_BW_80;
2631 else if (status->vht_flag & RX_VHT_FLAG_160MHZ)
2632 ri.bw = RATE_INFO_BW_160;
2633 else
2634 ri.bw = RATE_INFO_BW_20;
5614618e
JB		 2635 if (status->flag & RX_FLAG_SHORT_GI)
2636 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
f4bda337
TP		 2637 } else {
2638 struct ieee80211_supported_band *sband;
2103dec1
SW		 2639 int shift = 0;
2640 int bitrate;
2641
b51f3bee 2642 if (status->flag & RX_FLAG_10MHZ) {
2103dec1 2643 shift = 1;
b51f3bee
JB		 2644 ri.bw = RATE_INFO_BW_10;
2645 } else if (status->flag & RX_FLAG_5MHZ) {
2103dec1 2646 shift = 2;
b51f3bee
JB		 2647 ri.bw = RATE_INFO_BW_5;
2648 } else {
2649 ri.bw = RATE_INFO_BW_20;
2650 }
f4bda337
TP		 2651
2652 sband = local->hw.wiphy->bands[status->band];
2103dec1
SW		 2653 bitrate = sband->bitrates[status->rate_idx].bitrate;
2654 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
f4bda337
TP		 2655 }
2656
2657 rate = cfg80211_calculate_bitrate(&ri);
d86aa4f8
JB		 2658 if (WARN_ONCE(!rate,
2659 "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n",
2660 status->flag, status->rate_idx, status->vht_nss))
2661 return 0;
f4bda337
TP		 2662
2663 /* rewind from end of MPDU */
2664 if (status->flag & RX_FLAG_MACTIME_END)
2665 ts -= mpdu_len * 8 * 10 / rate;
2666
2667 ts += mpdu_offset * 8 * 10 / rate;
2668
2669 return ts;
2670}
164eb02d
SW		 2671
2672void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
2673{
2674 struct ieee80211_sub_if_data *sdata;
d2859df5 2675 struct cfg80211_chan_def chandef;
164eb02d 2676
34a3740d 2677 mutex_lock(&local->mtx);
164eb02d
SW		 2678 mutex_lock(&local->iflist_mtx);
2679 list_for_each_entry(sdata, &local->interfaces, list) {
34a3740d
JB		 2680 /* it might be waiting for the local->mtx, but then
2681 * by the time it gets it, sdata->wdev.cac_started
2682 * will no longer be true
2683 */
2684 cancel_delayed_work(&sdata->dfs_cac_timer_work);
164eb02d
SW		 2685
2686 if (sdata->wdev.cac_started) {
d2859df5 2687 chandef = sdata->vif.bss_conf.chandef;
164eb02d
SW		 2688 ieee80211_vif_release_channel(sdata);
2689 cfg80211_cac_event(sdata->dev,
d2859df5 2690 &chandef,
164eb02d
SW		 2691 NL80211_RADAR_CAC_ABORTED,
2692 GFP_KERNEL);
2693 }
2694 }
2695 mutex_unlock(&local->iflist_mtx);
34a3740d 2696 mutex_unlock(&local->mtx);
164eb02d
SW		 2697}
2698
2699void ieee80211_dfs_radar_detected_work(struct work_struct *work)
2700{
2701 struct ieee80211_local *local =
2702 container_of(work, struct ieee80211_local, radar_detected_work);
84a3d1c9 2703 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
486cf4c0
MK		 2704 struct ieee80211_chanctx *ctx;
2705 int num_chanctx = 0;
2706
2707 mutex_lock(&local->chanctx_mtx);
2708 list_for_each_entry(ctx, &local->chanctx_list, list) {
2709 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
2710 continue;
2711
2712 num_chanctx++;
2713 chandef = ctx->conf.def;
2714 }
2715 mutex_unlock(&local->chanctx_mtx);
164eb02d
SW		 2716
2717 ieee80211_dfs_cac_cancel(local);
2718
486cf4c0
MK		 2719 if (num_chanctx > 1)
2720 /* XXX: multi-channel is not supported yet */
164eb02d 2721 WARN_ON(1);
84a3d1c9 2722 else
164eb02d 2723 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
164eb02d
SW		 2724}
2725
2726void ieee80211_radar_detected(struct ieee80211_hw *hw)
2727{
2728 struct ieee80211_local *local = hw_to_local(hw);
2729
2730 trace_api_radar_detected(local);
2731
2732 ieee80211_queue_work(hw, &local->radar_detected_work);
2733}
2734EXPORT_SYMBOL(ieee80211_radar_detected);
e6b7cde4
SW		 2735
2736u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
2737{
2738 u32 ret;
2739 int tmp;
2740
2741 switch (c->width) {
2742 case NL80211_CHAN_WIDTH_20:
2743 c->width = NL80211_CHAN_WIDTH_20_NOHT;
2744 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2745 break;
2746 case NL80211_CHAN_WIDTH_40:
2747 c->width = NL80211_CHAN_WIDTH_20;
2748 c->center_freq1 = c->chan->center_freq;
2749 ret = IEEE80211_STA_DISABLE_40MHZ |
2750 IEEE80211_STA_DISABLE_VHT;
2751 break;
2752 case NL80211_CHAN_WIDTH_80:
2753 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
2754 /* n_P40 */
2755 tmp /= 2;
2756 /* freq_P40 */
2757 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
2758 c->width = NL80211_CHAN_WIDTH_40;
2759 ret = IEEE80211_STA_DISABLE_VHT;
2760 break;
2761 case NL80211_CHAN_WIDTH_80P80:
2762 c->center_freq2 = 0;
2763 c->width = NL80211_CHAN_WIDTH_80;
2764 ret = IEEE80211_STA_DISABLE_80P80MHZ |
2765 IEEE80211_STA_DISABLE_160MHZ;
2766 break;
2767 case NL80211_CHAN_WIDTH_160:
2768 /* n_P20 */
2769 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
2770 /* n_P80 */
2771 tmp /= 4;
2772 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
2773 c->width = NL80211_CHAN_WIDTH_80;
2774 ret = IEEE80211_STA_DISABLE_80P80MHZ |
2775 IEEE80211_STA_DISABLE_160MHZ;
2776 break;
2777 default:
2778 case NL80211_CHAN_WIDTH_20_NOHT:
2779 WARN_ON_ONCE(1);
2780 c->width = NL80211_CHAN_WIDTH_20_NOHT;
2781 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2782 break;
2783 case NL80211_CHAN_WIDTH_5:
2784 case NL80211_CHAN_WIDTH_10:
2785 WARN_ON_ONCE(1);
2786 /* keep c->width */
2787 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2788 break;
2789 }
2790
2791 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
2792
2793 return ret;
2794}
687da132
EG		 2795
2796/*
2797 * Returns true if smps_mode_new is strictly more restrictive than
2798 * smps_mode_old.
2799 */
2800bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2801 enum ieee80211_smps_mode smps_mode_new)
2802{
2803 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
2804 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
2805 return false;
2806
2807 switch (smps_mode_old) {
2808 case IEEE80211_SMPS_STATIC:
2809 return false;
2810 case IEEE80211_SMPS_DYNAMIC:
2811 return smps_mode_new == IEEE80211_SMPS_STATIC;
2812 case IEEE80211_SMPS_OFF:
2813 return smps_mode_new != IEEE80211_SMPS_OFF;
2814 default:
2815 WARN_ON(1);
2816 }
2817
2818 return false;
2819}
c6da674a
CYY		 2820
2821int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2822 struct cfg80211_csa_settings *csa_settings)
2823{
2824 struct sk_buff *skb;
2825 struct ieee80211_mgmt *mgmt;
2826 struct ieee80211_local *local = sdata->local;
2827 int freq;
2828 int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) +
2829 sizeof(mgmt->u.action.u.chan_switch);
2830 u8 *pos;
2831
2832 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2833 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2834 return -EOPNOTSUPP;
2835
2836 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
2837 5 + /* channel switch announcement element */
2838 3 + /* secondary channel offset element */
2839 8); /* mesh channel switch parameters element */
2840 if (!skb)
2841 return -ENOMEM;
2842
2843 skb_reserve(skb, local->tx_headroom);
2844 mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len);
2845 memset(mgmt, 0, hdr_len);
2846 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2847 IEEE80211_STYPE_ACTION);
2848
2849 eth_broadcast_addr(mgmt->da);
2850 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2851 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2852 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
2853 } else {
2854 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2855 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
2856 }
2857 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
2858 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
2859 pos = skb_put(skb, 5);
2860 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
2861 *pos++ = 3; /* IE length */
2862 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
2863 freq = csa_settings->chandef.chan->center_freq;
2864 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
2865 *pos++ = csa_settings->count; /* count */
2866
2867 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
2868 enum nl80211_channel_type ch_type;
2869
2870 skb_put(skb, 3);
2871 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
2872 *pos++ = 1; /* IE length */
2873 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
2874 if (ch_type == NL80211_CHAN_HT40PLUS)
2875 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2876 else
2877 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2878 }
2879
2880 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2881 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
c6da674a
CYY		 2882
2883 skb_put(skb, 8);
2884 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
2885 *pos++ = 6; /* IE length */
2886 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
2887 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
2888 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
2889 *pos++ |= csa_settings->block_tx ?
2890 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
2891 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
2892 pos += 2;
ca91dc97 2893 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
c6da674a 2894 pos += 2;
c6da674a
CYY		 2895 }
2896
2897 ieee80211_tx_skb(sdata, skb);
2898 return 0;
2899}
2475b1cc
MS		 2900
2901bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
2902{
2903 return !(cs == NULL || cs->cipher == 0 ||
2904 cs->hdr_len < cs->pn_len + cs->pn_off ||
2905 cs->hdr_len <= cs->key_idx_off ||
2906 cs->key_idx_shift > 7 ||
2907 cs->key_idx_mask == 0);
2908}
2909
2910bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
2911{
2912 int i;
2913
2914 /* Ensure we have enough iftype bitmap space for all iftype values */
2915 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
2916
2917 for (i = 0; i < n; i++)
2918 if (!ieee80211_cs_valid(&cs[i]))
2919 return false;
2920
2921 return true;
2922}
2923
2924const struct ieee80211_cipher_scheme *
2925ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2926 enum nl80211_iftype iftype)
2927{
2928 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
2929 int n = local->hw.n_cipher_schemes;
2930 int i;
2931 const struct ieee80211_cipher_scheme *cs = NULL;
2932
2933 for (i = 0; i < n; i++) {
2934 if (l[i].cipher == cipher) {
2935 cs = &l[i];
2936 break;
2937 }
2938 }
2939
2940 if (!cs || !(cs->iftype & BIT(iftype)))
2941 return NULL;
2942
2943 return cs;
2944}
2945
2946int ieee80211_cs_headroom(struct ieee80211_local *local,
2947 struct cfg80211_crypto_settings *crypto,
2948 enum nl80211_iftype iftype)
2949{
2950 const struct ieee80211_cipher_scheme *cs;
2951 int headroom = IEEE80211_ENCRYPT_HEADROOM;
2952 int i;
2953
2954 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
2955 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
2956 iftype);
2957
2958 if (cs && headroom < cs->hdr_len)
2959 headroom = cs->hdr_len;
2960 }
2961
2962 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
2963 if (cs && headroom < cs->hdr_len)
2964 headroom = cs->hdr_len;
2965
2966 return headroom;
2967}
a7022e65
FF		 2968
2969static bool
2970ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
2971{
2972 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
2973 int skip;
2974
2975 if (end > 0)
2976 return false;
2977
519ee691
JD		 2978 /* One shot NOA */
2979 if (data->count[i] == 1)
2980 return false;
2981
2982 if (data->desc[i].interval == 0)
2983 return false;
2984
a7022e65
FF		 2985 /* End time is in the past, check for repetitions */
2986 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
2987 if (data->count[i] < 255) {
2988 if (data->count[i] <= skip) {
2989 data->count[i] = 0;
2990 return false;
2991 }
2992
2993 data->count[i] -= skip;
2994 }
2995
2996 data->desc[i].start += skip * data->desc[i].interval;
2997
2998 return true;
2999}
3000
3001static bool
3002ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3003 s32 *offset)
3004{
3005 bool ret = false;
3006 int i;
3007
3008 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3009 s32 cur;
3010
3011 if (!data->count[i])
3012 continue;
3013
3014 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3015 ret = true;
3016
3017 cur = data->desc[i].start - tsf;
3018 if (cur > *offset)
3019 continue;
3020
3021 cur = data->desc[i].start + data->desc[i].duration - tsf;
3022 if (cur > *offset)
3023 *offset = cur;
3024 }
3025
3026 return ret;
3027}
3028
3029static u32
3030ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3031{
3032 s32 offset = 0;
3033 int tries = 0;
3034 /*
3035 * arbitrary limit, used to avoid infinite loops when combined NoA
3036 * descriptors cover the full time period.
3037 */
3038 int max_tries = 5;
3039
3040 ieee80211_extend_absent_time(data, tsf, &offset);
3041 do {
3042 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3043 break;
3044
3045 tries++;
3046 } while (tries < max_tries);
3047
3048 return offset;
3049}
3050
3051void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3052{
3053 u32 next_offset = BIT(31) - 1;
3054 int i;
3055
3056 data->absent = 0;
3057 data->has_next_tsf = false;
3058 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3059 s32 start;
3060
3061 if (!data->count[i])
3062 continue;
3063
3064 ieee80211_extend_noa_desc(data, tsf, i);
3065 start = data->desc[i].start - tsf;
3066 if (start <= 0)
3067 data->absent |= BIT(i);
3068
3069 if (next_offset > start)
3070 next_offset = start;
3071
3072 data->has_next_tsf = true;
3073 }
3074
3075 if (data->absent)
3076 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3077
3078 data->next_tsf = tsf + next_offset;
3079}
3080EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3081
3082int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3083 struct ieee80211_noa_data *data, u32 tsf)
3084{
3085 int ret = 0;
3086 int i;
3087
3088 memset(data, 0, sizeof(*data));
3089
3090 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3091 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3092
3093 if (!desc->count || !desc->duration)
3094 continue;
3095
3096 data->count[i] = desc->count;
3097 data->desc[i].start = le32_to_cpu(desc->start_time);
3098 data->desc[i].duration = le32_to_cpu(desc->duration);
3099 data->desc[i].interval = le32_to_cpu(desc->interval);
3100
3101 if (data->count[i] > 1 &&
3102 data->desc[i].interval < data->desc[i].duration)
3103 continue;
3104
3105 ieee80211_extend_noa_desc(data, tsf, i);
3106 ret++;
3107 }
3108
3109 if (ret)
3110 ieee80211_update_p2p_noa(data, tsf);
3111
3112 return ret;
3113}
3114EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
057d5f4b
TP		 3115
3116void ieee80211_recalc_dtim(struct ieee80211_local *local,
3117 struct ieee80211_sub_if_data *sdata)
3118{
3119 u64 tsf = drv_get_tsf(local, sdata);
3120 u64 dtim_count = 0;
3121 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3122 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3123 struct ps_data *ps;
3124 u8 bcns_from_dtim;
3125
3126 if (tsf == -1ULL || !beacon_int || !dtim_period)
3127 return;
3128
3129 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3130 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3131 if (!sdata->bss)
3132 return;
3133
3134 ps = &sdata->bss->ps;
3135 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3136 ps = &sdata->u.mesh.ps;
3137 } else {
3138 return;
3139 }
3140
3141 /*
3142 * actually finds last dtim_count, mac80211 will update in
3143 * __beacon_add_tim().
3144 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3145 */
3146 do_div(tsf, beacon_int);
3147 bcns_from_dtim = do_div(tsf, dtim_period);
3148 /* just had a DTIM */
3149 if (!bcns_from_dtim)
3150 dtim_count = 0;
3151 else
3152 dtim_count = dtim_period - bcns_from_dtim;
3153
3154 ps->dtim_count = dtim_count;
3155}
73de86a3 3156
71e6195e
MK		 3157static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3158 struct ieee80211_chanctx *ctx)
3159{
3160 struct ieee80211_sub_if_data *sdata;
3161 u8 radar_detect = 0;
3162
3163 lockdep_assert_held(&local->chanctx_mtx);
3164
3165 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3166 return 0;
3167
3168 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
3169 if (sdata->reserved_radar_required)
3170 radar_detect |= BIT(sdata->reserved_chandef.width);
3171
3172 /*
3173 * An in-place reservation context should not have any assigned vifs
3174 * until it replaces the other context.
3175 */
3176 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
3177 !list_empty(&ctx->assigned_vifs));
3178
3179 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
3180 if (sdata->radar_required)
3181 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
3182
3183 return radar_detect;
3184}
3185
73de86a3
LC		 3186int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
3187 const struct cfg80211_chan_def *chandef,
3188 enum ieee80211_chanctx_mode chanmode,
3189 u8 radar_detect)
3190{
3191 struct ieee80211_local *local = sdata->local;
3192 struct ieee80211_sub_if_data *sdata_iter;
3193 enum nl80211_iftype iftype = sdata->wdev.iftype;
3194 int num[NUM_NL80211_IFTYPES];
3195 struct ieee80211_chanctx *ctx;
b6a55015 3196 int num_different_channels = 0;
73de86a3
LC		 3197 int total = 1;
3198
3199 lockdep_assert_held(&local->chanctx_mtx);
3200
3201 if (WARN_ON(hweight32(radar_detect) > 1))
3202 return -EINVAL;
3203
b6a55015
LC		 3204 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
3205 !chandef->chan))
73de86a3
LC		 3206 return -EINVAL;
3207
b6a55015
LC		 3208 if (chandef)
3209 num_different_channels = 1;
3210
73de86a3
LC		 3211 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
3212 return -EINVAL;
3213
3214 /* Always allow software iftypes */
3215 if (local->hw.wiphy->software_iftypes & BIT(iftype)) {
3216 if (radar_detect)
3217 return -EINVAL;
3218 return 0;
3219 }
3220
3221 memset(num, 0, sizeof(num));
3222
3223 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
3224 num[iftype] = 1;
3225
3226 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3227 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3228 continue;
71e6195e 3229 radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
73de86a3
LC		 3230 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
3231 num_different_channels++;
3232 continue;
3233 }
b6a55015 3234 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
73de86a3
LC		 3235 cfg80211_chandef_compatible(chandef,
3236 &ctx->conf.def))
3237 continue;
3238 num_different_channels++;
3239 }
3240
3241 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
3242 struct wireless_dev *wdev_iter;
3243
3244 wdev_iter = &sdata_iter->wdev;
3245
3246 if (sdata_iter == sdata ||
0f611d28 3247 !ieee80211_sdata_running(sdata_iter) ||
73de86a3
LC		 3248 local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
3249 continue;
3250
3251 num[wdev_iter->iftype]++;
3252 total++;
3253 }
3254
3255 if (total == 1 && !radar_detect)
3256 return 0;
3257
3258 return cfg80211_check_combinations(local->hw.wiphy,
3259 num_different_channels,
3260 radar_detect, num);
3261}
6fa001bc
MK		 3262
3263static void
3264ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
3265 void *data)
3266{
3267 u32 *max_num_different_channels = data;
3268
3269 *max_num_different_channels = max(*max_num_different_channels,
3270 c->num_different_channels);
3271}
3272
3273int ieee80211_max_num_channels(struct ieee80211_local *local)
3274{
3275 struct ieee80211_sub_if_data *sdata;
3276 int num[NUM_NL80211_IFTYPES] = {};
3277 struct ieee80211_chanctx *ctx;
3278 int num_different_channels = 0;
3279 u8 radar_detect = 0;
3280 u32 max_num_different_channels = 1;
3281 int err;
3282
3283 lockdep_assert_held(&local->chanctx_mtx);
3284
3285 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3286 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3287 continue;
3288
6fa001bc
MK		 3289 num_different_channels++;
3290
71e6195e 3291 radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
6fa001bc
MK		 3292 }
3293
3294 list_for_each_entry_rcu(sdata, &local->interfaces, list)
3295 num[sdata->wdev.iftype]++;
3296
3297 err = cfg80211_iter_combinations(local->hw.wiphy,
3298 num_different_channels, radar_detect,
3299 num, ieee80211_iter_max_chans,
3300 &max_num_different_channels);
3301 if (err < 0)
3302 return err;
3303
3304 return max_num_different_channels;
3305}
40b861a0
AN		 3306
3307u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
3308{
3309 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
3310 *buf++ = 7; /* len */
3311 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
3312 *buf++ = 0x50;
3313 *buf++ = 0xf2;
3314 *buf++ = 2; /* WME */
3315 *buf++ = 0; /* WME info */
3316 *buf++ = 1; /* WME ver */
3317 *buf++ = qosinfo; /* U-APSD no in use */
3318
3319 return buf;
3320}
ba8c3d6f
FF		 3321
3322void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
3323 struct sta_info *sta,
3324 struct txq_info *txqi, int tid)
3325{
3326 skb_queue_head_init(&txqi->queue);
3327 txqi->txq.vif = &sdata->vif;
3328
3329 if (sta) {
3330 txqi->txq.sta = &sta->sta;
3331 sta->sta.txq[tid] = &txqi->txq;
4d57c678 3332 txqi->txq.tid = tid;
ba8c3d6f
FF		 3333 txqi->txq.ac = ieee802_1d_to_ac[tid & 7];
3334 } else {
3335 sdata->vif.txq = &txqi->txq;
4d57c678 3336 txqi->txq.tid = 0;
ba8c3d6f
FF		 3337 txqi->txq.ac = IEEE80211_AC_BE;
3338 }
3339}
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