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mac80211: add ieee80211_tx_status_ext
[mirror_ubuntu-bionic-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
da6a4352 7 * Copyright (C) 2015-2017 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
57fbcce3 62int ieee80211_frame_duration(enum nl80211_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
57fbcce3 80 if (band == NL80211_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,
57fbcce3 132 enum nl80211_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
80a83cfc
MK		 247 if (local->ops->wake_tx_queue)
248 return;
249
a6f38ac3
JB		 250 if (local->hw.queues < IEEE80211_NUM_ACS)
251 n_acs = 1;
3a25a8c8
JB		 252
253 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
254 int ac;
255
f142c6b9
JB		 256 if (!sdata->dev)
257 continue;
258
3a25a8c8
JB		 259 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
260 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
261 continue;
262
a6f38ac3 263 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 264 int ac_queue = sdata->vif.hw_queue[ac];
265
266 if (ac_queue == queue ||
267 (sdata->vif.cab_queue == queue &&
268 local->queue_stop_reasons[ac_queue] == 0 &&
269 skb_queue_empty(&local->pending[ac_queue])))
270 netif_wake_subqueue(sdata->dev, ac);
271 }
272 }
273}
274
ce7c9111 275static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 276 enum queue_stop_reason reason,
277 bool refcounted)
c2d1560a
JB		 278{
279 struct ieee80211_local *local = hw_to_local(hw);
280
b5878a2d
JB		 281 trace_wake_queue(local, queue, reason);
282
e4e72fb4
JB		 283 if (WARN_ON(queue >= hw->queues))
284 return;
ce7c9111 285
ada15125
JB		 286 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
287 return;
288
856142cd 289 if (!refcounted) {
cca07b00 290 local->q_stop_reasons[queue][reason] = 0;
856142cd 291 } else {
cca07b00 292 local->q_stop_reasons[queue][reason]--;
856142cd
JB		 293 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
294 local->q_stop_reasons[queue][reason] = 0;
295 }
cca07b00
LC		 296
297 if (local->q_stop_reasons[queue][reason] == 0)
298 __clear_bit(reason, &local->queue_stop_reasons[queue]);
96f5e66e
JB		 299
300 if (local->queue_stop_reasons[queue] != 0)
301 /* someone still has this queue stopped */
302 return;
303
7236fe29
JB		 304 if (skb_queue_empty(&local->pending[queue])) {
305 rcu_read_lock();
3a25a8c8 306 ieee80211_propagate_queue_wake(local, queue);
7236fe29
JB		 307 rcu_read_unlock();
308 } else
3b8d81e0 309 tasklet_schedule(&local->tx_pending_tasklet);
c2d1560a 310}
ce7c9111 311
96f5e66e 312void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 313 enum queue_stop_reason reason,
314 bool refcounted)
ce7c9111
KV		 315{
316 struct ieee80211_local *local = hw_to_local(hw);
317 unsigned long flags;
318
319 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 320 __ieee80211_wake_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 321 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
322}
323
324void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
325{
326 ieee80211_wake_queue_by_reason(hw, queue,
cca07b00
LC		 327 IEEE80211_QUEUE_STOP_REASON_DRIVER,
328 false);
ce7c9111 329}
c2d1560a
JB		 330EXPORT_SYMBOL(ieee80211_wake_queue);
331
ce7c9111 332static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 333 enum queue_stop_reason reason,
334 bool refcounted)
c2d1560a
JB		 335{
336 struct ieee80211_local *local = hw_to_local(hw);
cf0277e7 337 struct ieee80211_sub_if_data *sdata;
a6f38ac3 338 int n_acs = IEEE80211_NUM_ACS;
c2d1560a 339
b5878a2d
JB		 340 trace_stop_queue(local, queue, reason);
341
e4e72fb4
JB		 342 if (WARN_ON(queue >= hw->queues))
343 return;
96f5e66e 344
cca07b00
LC		 345 if (!refcounted)
346 local->q_stop_reasons[queue][reason] = 1;
347 else
348 local->q_stop_reasons[queue][reason]++;
ada15125 349
cca07b00
LC		 350 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
351 return;
cf0277e7 352
80a83cfc
MK		 353 if (local->ops->wake_tx_queue)
354 return;
355
a6f38ac3
JB		 356 if (local->hw.queues < IEEE80211_NUM_ACS)
357 n_acs = 1;
358
cf0277e7 359 rcu_read_lock();
3a25a8c8
JB		 360 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
361 int ac;
362
f142c6b9
JB		 363 if (!sdata->dev)
364 continue;
365
a6f38ac3 366 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 367 if (sdata->vif.hw_queue[ac] == queue ||
368 sdata->vif.cab_queue == queue)
369 netif_stop_subqueue(sdata->dev, ac);
370 }
371 }
cf0277e7 372 rcu_read_unlock();
c2d1560a 373}
ce7c9111 374
96f5e66e 375void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 376 enum queue_stop_reason reason,
377 bool refcounted)
ce7c9111
KV		 378{
379 struct ieee80211_local *local = hw_to_local(hw);
380 unsigned long flags;
381
382 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 383 __ieee80211_stop_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 384 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
385}
386
387void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
388{
389 ieee80211_stop_queue_by_reason(hw, queue,
cca07b00
LC		 390 IEEE80211_QUEUE_STOP_REASON_DRIVER,
391 false);
ce7c9111 392}
c2d1560a
JB		 393EXPORT_SYMBOL(ieee80211_stop_queue);
394
8f77f384
JB		 395void ieee80211_add_pending_skb(struct ieee80211_local *local,
396 struct sk_buff *skb)
397{
398 struct ieee80211_hw *hw = &local->hw;
399 unsigned long flags;
a7bc376c 400 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
3a25a8c8 401 int queue = info->hw_queue;
a7bc376c
JB		 402
403 if (WARN_ON(!info->control.vif)) {
d4fa14cd 404 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 405 return;
406 }
8f77f384
JB		 407
408 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00
LC		 409 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
410 false);
3b8d81e0 411 __skb_queue_tail(&local->pending[queue], skb);
cca07b00
LC		 412 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
413 false);
8f77f384
JB		 414 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
415}
416
e3685e03
JB		 417void ieee80211_add_pending_skbs(struct ieee80211_local *local,
418 struct sk_buff_head *skbs)
8f77f384
JB		 419{
420 struct ieee80211_hw *hw = &local->hw;
421 struct sk_buff *skb;
422 unsigned long flags;
b0b97a8a 423 int queue, i;
8f77f384
JB		 424
425 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
8f77f384 426 while ((skb = skb_dequeue(skbs))) {
a7bc376c
JB		 427 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
428
429 if (WARN_ON(!info->control.vif)) {
d4fa14cd 430 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 431 continue;
432 }
433
3a25a8c8 434 queue = info->hw_queue;
4644ae89
JB		 435
436 __ieee80211_stop_queue(hw, queue,
cca07b00
LC		 437 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
438 false);
4644ae89 439
3b8d81e0 440 __skb_queue_tail(&local->pending[queue], skb);
8f77f384
JB		 441 }
442
3b8d81e0 443 for (i = 0; i < hw->queues; i++)
8f77f384 444 __ieee80211_wake_queue(hw, i,
cca07b00
LC		 445 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
446 false);
8f77f384 447 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
8f77f384
JB		 448}
449
ce7c9111 450void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 451 unsigned long queues,
cca07b00
LC		 452 enum queue_stop_reason reason,
453 bool refcounted)
c2d1560a 454{
ce7c9111
KV		 455 struct ieee80211_local *local = hw_to_local(hw);
456 unsigned long flags;
c2d1560a
JB		 457 int i;
458
ce7c9111
KV		 459 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
460
445ea4e8 461 for_each_set_bit(i, &queues, hw->queues)
cca07b00 462 __ieee80211_stop_queue(hw, i, reason, refcounted);
ce7c9111
KV		 463
464 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
465}
466
467void ieee80211_stop_queues(struct ieee80211_hw *hw)
468{
445ea4e8 469 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 470 IEEE80211_QUEUE_STOP_REASON_DRIVER,
471 false);
c2d1560a
JB		 472}
473EXPORT_SYMBOL(ieee80211_stop_queues);
474
92ab8535
TW		 475int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
476{
477 struct ieee80211_local *local = hw_to_local(hw);
3b8d81e0
JB		 478 unsigned long flags;
479 int ret;
96f5e66e 480
e4e72fb4
JB		 481 if (WARN_ON(queue >= hw->queues))
482 return true;
96f5e66e 483
3b8d81e0 484 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
2419ea14
TP		 485 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
486 &local->queue_stop_reasons[queue]);
3b8d81e0
JB		 487 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
488 return ret;
92ab8535
TW		 489}
490EXPORT_SYMBOL(ieee80211_queue_stopped);
491
ce7c9111 492void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 493 unsigned long queues,
cca07b00
LC		 494 enum queue_stop_reason reason,
495 bool refcounted)
c2d1560a 496{
ce7c9111
KV		 497 struct ieee80211_local *local = hw_to_local(hw);
498 unsigned long flags;
c2d1560a
JB		 499 int i;
500
ce7c9111
KV		 501 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
502
445ea4e8 503 for_each_set_bit(i, &queues, hw->queues)
cca07b00 504 __ieee80211_wake_queue(hw, i, reason, refcounted);
ce7c9111
KV		 505
506 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
507}
508
509void ieee80211_wake_queues(struct ieee80211_hw *hw)
510{
445ea4e8 511 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 512 IEEE80211_QUEUE_STOP_REASON_DRIVER,
513 false);
c2d1560a
JB		 514}
515EXPORT_SYMBOL(ieee80211_wake_queues);
dabeb344 516
26da23b6
LC		 517static unsigned int
518ieee80211_get_vif_queues(struct ieee80211_local *local,
519 struct ieee80211_sub_if_data *sdata)
39ecc01d 520{
26da23b6 521 unsigned int queues;
39ecc01d 522
30686bf7 523 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
39ecc01d
JB		 524 int ac;
525
526 queues = 0;
527
528 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
529 queues |= BIT(sdata->vif.hw_queue[ac]);
530 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
531 queues |= BIT(sdata->vif.cab_queue);
532 } else {
533 /* all queues */
534 queues = BIT(local->hw.queues) - 1;
535 }
536
26da23b6
LC		 537 return queues;
538}
539
4f9610d5
LK		 540void __ieee80211_flush_queues(struct ieee80211_local *local,
541 struct ieee80211_sub_if_data *sdata,
3b24f4c6 542 unsigned int queues, bool drop)
26da23b6 543{
26da23b6
LC		 544 if (!local->ops->flush)
545 return;
546
4f9610d5
LK		 547 /*
548 * If no queue was set, or if the HW doesn't support
549 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
550 */
30686bf7 551 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
4f9610d5 552 queues = ieee80211_get_vif_queues(local, sdata);
26da23b6 553
59f48fe2 554 ieee80211_stop_queues_by_reason(&local->hw, queues,
cca07b00
LC		 555 IEEE80211_QUEUE_STOP_REASON_FLUSH,
556 false);
445ea4e8 557
3b24f4c6 558 drv_flush(local, sdata, queues, drop);
445ea4e8 559
59f48fe2 560 ieee80211_wake_queues_by_reason(&local->hw, queues,
cca07b00
LC		 561 IEEE80211_QUEUE_STOP_REASON_FLUSH,
562 false);
39ecc01d
JB		 563}
564
4f9610d5 565void ieee80211_flush_queues(struct ieee80211_local *local,
3b24f4c6 566 struct ieee80211_sub_if_data *sdata, bool drop)
4f9610d5 567{
3b24f4c6 568 __ieee80211_flush_queues(local, sdata, 0, drop);
4f9610d5
LK		 569}
570
26da23b6
LC		 571void ieee80211_stop_vif_queues(struct ieee80211_local *local,
572 struct ieee80211_sub_if_data *sdata,
573 enum queue_stop_reason reason)
574{
575 ieee80211_stop_queues_by_reason(&local->hw,
576 ieee80211_get_vif_queues(local, sdata),
577 reason, true);
578}
579
580void ieee80211_wake_vif_queues(struct ieee80211_local *local,
581 struct ieee80211_sub_if_data *sdata,
582 enum queue_stop_reason reason)
583{
584 ieee80211_wake_queues_by_reason(&local->hw,
585 ieee80211_get_vif_queues(local, sdata),
586 reason, true);
587}
588
3384d757
AN		 589static void __iterate_interfaces(struct ieee80211_local *local,
590 u32 iter_flags,
591 void (*iterator)(void *data, u8 *mac,
592 struct ieee80211_vif *vif),
593 void *data)
dabeb344 594{
dabeb344 595 struct ieee80211_sub_if_data *sdata;
3384d757 596 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
dabeb344 597
c7c71066 598 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
2f561feb 599 switch (sdata->vif.type) {
05c914fe 600 case NL80211_IFTYPE_MONITOR:
d8212184 601 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
31eba5bc
FF		 602 continue;
603 break;
05c914fe 604 case NL80211_IFTYPE_AP_VLAN:
2f561feb 605 continue;
2ca27bcf 606 default:
2f561feb
ID		 607 break;
608 }
8b2c9824 609 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
3384d757 610 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
8b2c9824 611 continue;
3384d757 612 if (ieee80211_sdata_running(sdata) || !active_only)
47846c9b 613 iterator(data, sdata->vif.addr,
2f561feb
ID		 614 &sdata->vif);
615 }
616
c7c71066
JB		 617 sdata = rcu_dereference_check(local->monitor_sdata,
618 lockdep_is_held(&local->iflist_mtx) ||
619 lockdep_rtnl_is_held());
8b2c9824 620 if (sdata &&
3384d757 621 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
8b2c9824 622 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
685fb72b 623 iterator(data, sdata->vif.addr, &sdata->vif);
c7c71066 624}
685fb72b 625
3384d757 626void ieee80211_iterate_interfaces(
c7c71066
JB		 627 struct ieee80211_hw *hw, u32 iter_flags,
628 void (*iterator)(void *data, u8 *mac,
629 struct ieee80211_vif *vif),
630 void *data)
631{
632 struct ieee80211_local *local = hw_to_local(hw);
633
634 mutex_lock(&local->iflist_mtx);
3384d757 635 __iterate_interfaces(local, iter_flags, iterator, data);
c771c9d8 636 mutex_unlock(&local->iflist_mtx);
2f561feb 637}
3384d757 638EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
2f561feb
ID		 639
640void ieee80211_iterate_active_interfaces_atomic(
8b2c9824 641 struct ieee80211_hw *hw, u32 iter_flags,
2f561feb
ID		 642 void (*iterator)(void *data, u8 *mac,
643 struct ieee80211_vif *vif),
644 void *data)
645{
646 struct ieee80211_local *local = hw_to_local(hw);
2f561feb 647
e38bad47 648 rcu_read_lock();
3384d757
AN		 649 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
650 iterator, data);
c7c71066
JB		 651 rcu_read_unlock();
652}
653EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
dabeb344 654
c7c71066
JB		 655void ieee80211_iterate_active_interfaces_rtnl(
656 struct ieee80211_hw *hw, u32 iter_flags,
657 void (*iterator)(void *data, u8 *mac,
658 struct ieee80211_vif *vif),
659 void *data)
660{
661 struct ieee80211_local *local = hw_to_local(hw);
e38bad47 662
c7c71066 663 ASSERT_RTNL();
685fb72b 664
3384d757
AN		 665 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
666 iterator, data);
dabeb344 667}
c7c71066 668EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
37ffc8da 669
0fc1e049
AN		 670static void __iterate_stations(struct ieee80211_local *local,
671 void (*iterator)(void *data,
672 struct ieee80211_sta *sta),
673 void *data)
674{
675 struct sta_info *sta;
676
677 list_for_each_entry_rcu(sta, &local->sta_list, list) {
678 if (!sta->uploaded)
679 continue;
680
681 iterator(data, &sta->sta);
682 }
683}
684
685void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
686 void (*iterator)(void *data,
687 struct ieee80211_sta *sta),
688 void *data)
689{
690 struct ieee80211_local *local = hw_to_local(hw);
691
692 rcu_read_lock();
693 __iterate_stations(local, iterator, data);
694 rcu_read_unlock();
695}
696EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
697
ad7e718c
JB		 698struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
699{
700 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
701
702 if (!ieee80211_sdata_running(sdata) ||
703 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
704 return NULL;
705 return &sdata->vif;
706}
707EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
708
dc5a1ad7
EG		 709struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
710{
6513e98e
JB		 711 struct ieee80211_sub_if_data *sdata;
712
713 if (!vif)
714 return NULL;
715
716 sdata = vif_to_sdata(vif);
dc5a1ad7
EG		 717
718 if (!ieee80211_sdata_running(sdata) ||
719 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
720 return NULL;
721
722 return &sdata->wdev;
723}
724EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
725
42935eca
LR		 726/*
727 * Nothing should have been stuffed into the workqueue during
4afaff17
EG		 728 * the suspend->resume cycle. Since we can't check each caller
729 * of this function if we are already quiescing / suspended,
730 * check here and don't WARN since this can actually happen when
731 * the rx path (for example) is racing against __ieee80211_suspend
732 * and suspending / quiescing was set after the rx path checked
733 * them.
42935eca
LR		 734 */
735static bool ieee80211_can_queue_work(struct ieee80211_local *local)
736{
4afaff17
EG		 737 if (local->quiescing || (local->suspended && !local->resuming)) {
738 pr_warn("queueing ieee80211 work while going to suspend\n");
ceb99fe0 739 return false;
4afaff17 740 }
42935eca
LR		 741
742 return true;
743}
744
745void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
746{
747 struct ieee80211_local *local = hw_to_local(hw);
748
749 if (!ieee80211_can_queue_work(local))
750 return;
751
752 queue_work(local->workqueue, work);
753}
754EXPORT_SYMBOL(ieee80211_queue_work);
755
756void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
757 struct delayed_work *dwork,
758 unsigned long delay)
759{
760 struct ieee80211_local *local = hw_to_local(hw);
761
762 if (!ieee80211_can_queue_work(local))
763 return;
764
765 queue_delayed_work(local->workqueue, dwork, delay);
766}
767EXPORT_SYMBOL(ieee80211_queue_delayed_work);
768
35d865af 769u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
dd76986b
JB		 770 struct ieee802_11_elems *elems,
771 u64 filter, u32 crc)
772{
773 size_t left = len;
35d865af 774 const u8 *pos = start;
dd76986b 775 bool calc_crc = filter != 0;
fcff4f10 776 DECLARE_BITMAP(seen_elems, 256);
b2e506bf 777 const u8 *ie;
dd76986b 778
fcff4f10 779 bitmap_zero(seen_elems, 256);
dd76986b
JB		 780 memset(elems, 0, sizeof(*elems));
781 elems->ie_start = start;
782 elems->total_len = len;
783
784 while (left >= 2) {
785 u8 id, elen;
fcff4f10 786 bool elem_parse_failed;
dd76986b
JB		 787
788 id = *pos++;
789 elen = *pos++;
790 left -= 2;
791
fcff4f10
PS		 792 if (elen > left) {
793 elems->parse_error = true;
dd76986b 794 break;
fcff4f10
PS		 795 }
796
9690fb16
JB		 797 switch (id) {
798 case WLAN_EID_SSID:
799 case WLAN_EID_SUPP_RATES:
800 case WLAN_EID_FH_PARAMS:
801 case WLAN_EID_DS_PARAMS:
802 case WLAN_EID_CF_PARAMS:
803 case WLAN_EID_TIM:
804 case WLAN_EID_IBSS_PARAMS:
805 case WLAN_EID_CHALLENGE:
806 case WLAN_EID_RSN:
807 case WLAN_EID_ERP_INFO:
808 case WLAN_EID_EXT_SUPP_RATES:
809 case WLAN_EID_HT_CAPABILITY:
810 case WLAN_EID_HT_OPERATION:
811 case WLAN_EID_VHT_CAPABILITY:
812 case WLAN_EID_VHT_OPERATION:
813 case WLAN_EID_MESH_ID:
814 case WLAN_EID_MESH_CONFIG:
815 case WLAN_EID_PEER_MGMT:
816 case WLAN_EID_PREQ:
817 case WLAN_EID_PREP:
818 case WLAN_EID_PERR:
819 case WLAN_EID_RANN:
820 case WLAN_EID_CHANNEL_SWITCH:
821 case WLAN_EID_EXT_CHANSWITCH_ANN:
822 case WLAN_EID_COUNTRY:
823 case WLAN_EID_PWR_CONSTRAINT:
824 case WLAN_EID_TIMEOUT_INTERVAL:
85220d71 825 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
b2e506bf 826 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
8f2535b9 827 case WLAN_EID_CHAN_SWITCH_PARAM:
9041c1fa 828 case WLAN_EID_EXT_CAPABILITY:
53837584
AN		 829 case WLAN_EID_CHAN_SWITCH_TIMING:
830 case WLAN_EID_LINK_ID:
b2e506bf
JB		 831 /*
832 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
833 * that if the content gets bigger it might be needed more than once
834 */
9690fb16
JB		 835 if (test_bit(id, seen_elems)) {
836 elems->parse_error = true;
837 left -= elen;
838 pos += elen;
839 continue;
840 }
841 break;
fcff4f10 842 }
dd76986b
JB		 843
844 if (calc_crc && id < 64 && (filter & (1ULL << id)))
845 crc = crc32_be(crc, pos - 2, elen + 2);
846
fcff4f10
PS		 847 elem_parse_failed = false;
848
dd76986b 849 switch (id) {
53837584
AN		 850 case WLAN_EID_LINK_ID:
851 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
852 elem_parse_failed = true;
853 break;
854 }
855 elems->lnk_id = (void *)(pos - 2);
856 break;
857 case WLAN_EID_CHAN_SWITCH_TIMING:
858 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
859 elem_parse_failed = true;
860 break;
861 }
862 elems->ch_sw_timing = (void *)pos;
863 break;
9041c1fa
AN		 864 case WLAN_EID_EXT_CAPABILITY:
865 elems->ext_capab = pos;
866 elems->ext_capab_len = elen;
867 break;
dd76986b
JB		 868 case WLAN_EID_SSID:
869 elems->ssid = pos;
870 elems->ssid_len = elen;
871 break;
872 case WLAN_EID_SUPP_RATES:
873 elems->supp_rates = pos;
874 elems->supp_rates_len = elen;
875 break;
dd76986b 876 case WLAN_EID_DS_PARAMS:
1cd8e88e
JB		 877 if (elen >= 1)
878 elems->ds_params = pos;
879 else
880 elem_parse_failed = true;
dd76986b 881 break;
dd76986b
JB		 882 case WLAN_EID_TIM:
883 if (elen >= sizeof(struct ieee80211_tim_ie)) {
884 elems->tim = (void *)pos;
885 elems->tim_len = elen;
fcff4f10
PS		 886 } else
887 elem_parse_failed = true;
dd76986b 888 break;
dd76986b
JB		 889 case WLAN_EID_CHALLENGE:
890 elems->challenge = pos;
891 elems->challenge_len = elen;
892 break;
893 case WLAN_EID_VENDOR_SPECIFIC:
894 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
895 pos[2] == 0xf2) {
896 /* Microsoft OUI (00:50:F2) */
897
898 if (calc_crc)
899 crc = crc32_be(crc, pos - 2, elen + 2);
900
441a33ba 901 if (elen >= 5 && pos[3] == 2) {
dd76986b
JB		 902 /* OUI Type 2 - WMM IE */
903 if (pos[4] == 0) {
904 elems->wmm_info = pos;
905 elems->wmm_info_len = elen;
906 } else if (pos[4] == 1) {
907 elems->wmm_param = pos;
908 elems->wmm_param_len = elen;
909 }
910 }
911 }
912 break;
913 case WLAN_EID_RSN:
914 elems->rsn = pos;
915 elems->rsn_len = elen;
916 break;
917 case WLAN_EID_ERP_INFO:
1946bed9
JB		 918 if (elen >= 1)
919 elems->erp_info = pos;
920 else
921 elem_parse_failed = true;
dd76986b
JB		 922 break;
923 case WLAN_EID_EXT_SUPP_RATES:
924 elems->ext_supp_rates = pos;
925 elems->ext_supp_rates_len = elen;
926 break;
927 case WLAN_EID_HT_CAPABILITY:
928 if (elen >= sizeof(struct ieee80211_ht_cap))
929 elems->ht_cap_elem = (void *)pos;
fcff4f10
PS		 930 else
931 elem_parse_failed = true;
dd76986b 932 break;
074d46d1
JB		 933 case WLAN_EID_HT_OPERATION:
934 if (elen >= sizeof(struct ieee80211_ht_operation))
935 elems->ht_operation = (void *)pos;
fcff4f10
PS		 936 else
937 elem_parse_failed = true;
dd76986b 938 break;
818255ea
MP		 939 case WLAN_EID_VHT_CAPABILITY:
940 if (elen >= sizeof(struct ieee80211_vht_cap))
941 elems->vht_cap_elem = (void *)pos;
942 else
943 elem_parse_failed = true;
944 break;
945 case WLAN_EID_VHT_OPERATION:
946 if (elen >= sizeof(struct ieee80211_vht_operation))
947 elems->vht_operation = (void *)pos;
948 else
949 elem_parse_failed = true;
950 break;
bee7f586
JB		 951 case WLAN_EID_OPMODE_NOTIF:
952 if (elen > 0)
953 elems->opmode_notif = pos;
954 else
955 elem_parse_failed = true;
956 break;
dd76986b
JB		 957 case WLAN_EID_MESH_ID:
958 elems->mesh_id = pos;
959 elems->mesh_id_len = elen;
960 break;
961 case WLAN_EID_MESH_CONFIG:
962 if (elen >= sizeof(struct ieee80211_meshconf_ie))
963 elems->mesh_config = (void *)pos;
fcff4f10
PS		 964 else
965 elem_parse_failed = true;
dd76986b
JB		 966 break;
967 case WLAN_EID_PEER_MGMT:
968 elems->peering = pos;
969 elems->peering_len = elen;
970 break;
3f52b7e3
MP		 971 case WLAN_EID_MESH_AWAKE_WINDOW:
972 if (elen >= 2)
973 elems->awake_window = (void *)pos;
974 break;
dd76986b
JB		 975 case WLAN_EID_PREQ:
976 elems->preq = pos;
977 elems->preq_len = elen;
978 break;
979 case WLAN_EID_PREP:
980 elems->prep = pos;
981 elems->prep_len = elen;
982 break;
983 case WLAN_EID_PERR:
984 elems->perr = pos;
985 elems->perr_len = elen;
986 break;
987 case WLAN_EID_RANN:
988 if (elen >= sizeof(struct ieee80211_rann_ie))
989 elems->rann = (void *)pos;
fcff4f10
PS		 990 else
991 elem_parse_failed = true;
dd76986b
JB		 992 break;
993 case WLAN_EID_CHANNEL_SWITCH:
5bc1420b
JB		 994 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
995 elem_parse_failed = true;
996 break;
997 }
998 elems->ch_switch_ie = (void *)pos;
dd76986b 999 break;
b4f286a1
JB		 1000 case WLAN_EID_EXT_CHANSWITCH_ANN:
1001 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1002 elem_parse_failed = true;
1003 break;
1004 }
1005 elems->ext_chansw_ie = (void *)pos;
1006 break;
85220d71
JB		 1007 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1008 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1009 elem_parse_failed = true;
1010 break;
1011 }
1012 elems->sec_chan_offs = (void *)pos;
1013 break;
8f2535b9
CYY		 1014 case WLAN_EID_CHAN_SWITCH_PARAM:
1015 if (elen !=
1016 sizeof(*elems->mesh_chansw_params_ie)) {
1017 elem_parse_failed = true;
1018 break;
1019 }
1020 elems->mesh_chansw_params_ie = (void *)pos;
1021 break;
b2e506bf
JB		 1022 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1023 if (!action ||
1024 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1025 elem_parse_failed = true;
1026 break;
1027 }
1028 elems->wide_bw_chansw_ie = (void *)pos;
1029 break;
1030 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1031 if (action) {
1032 elem_parse_failed = true;
1033 break;
1034 }
1035 /*
1036 * This is a bit tricky, but as we only care about
1037 * the wide bandwidth channel switch element, so
1038 * just parse it out manually.
1039 */
1040 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1041 pos, elen);
1042 if (ie) {
1043 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1044 elems->wide_bw_chansw_ie =
1045 (void *)(ie + 2);
1046 else
1047 elem_parse_failed = true;
1048 }
1049 break;
dd76986b
JB		 1050 case WLAN_EID_COUNTRY:
1051 elems->country_elem = pos;
1052 elems->country_elem_len = elen;
1053 break;
1054 case WLAN_EID_PWR_CONSTRAINT:
761a48d2
JB		 1055 if (elen != 1) {
1056 elem_parse_failed = true;
1057 break;
1058 }
dd76986b 1059 elems->pwr_constr_elem = pos;
dd76986b 1060 break;
c8d65917
SG		 1061 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1062 /* Lots of different options exist, but we only care
1063 * about the Dynamic Transmit Power Control element.
1064 * First check for the Cisco OUI, then for the DTPC
1065 * tag (0x00).
1066 */
1067 if (elen < 4) {
1068 elem_parse_failed = true;
1069 break;
1070 }
1071
1072 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1073 pos[2] != 0x96 || pos[3] != 0x00)
1074 break;
1075
1076 if (elen != 6) {
1077 elem_parse_failed = true;
1078 break;
1079 }
1080
1081 if (calc_crc)
1082 crc = crc32_be(crc, pos - 2, elen + 2);
1083
1084 elems->cisco_dtpc_elem = pos;
1085 break;
dd76986b 1086 case WLAN_EID_TIMEOUT_INTERVAL:
79ba1d89
JB		 1087 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1088 elems->timeout_int = (void *)pos;
1089 else
1090 elem_parse_failed = true;
dd76986b
JB		 1091 break;
1092 default:
1093 break;
1094 }
1095
fcff4f10
PS		 1096 if (elem_parse_failed)
1097 elems->parse_error = true;
1098 else
5df45690 1099 __set_bit(id, seen_elems);
fcff4f10 1100
dd76986b
JB		 1101 left -= elen;
1102 pos += elen;
1103 }
1104
fcff4f10
PS		 1105 if (left != 0)
1106 elems->parse_error = true;
1107
dd76986b
JB		 1108 return crc;
1109}
1110
3abead59 1111void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
cec66283 1112 bool bss_notify, bool enable_qos)
5825fe10
JB		 1113{
1114 struct ieee80211_local *local = sdata->local;
1115 struct ieee80211_tx_queue_params qparam;
55de908a 1116 struct ieee80211_chanctx_conf *chanctx_conf;
54bcbc69 1117 int ac;
cec66283 1118 bool use_11b;
239281f8 1119 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
aa837e1d 1120 int aCWmin, aCWmax;
5825fe10
JB		 1121
1122 if (!local->ops->conf_tx)
1123 return;
1124
54bcbc69
JB		 1125 if (local->hw.queues < IEEE80211_NUM_ACS)
1126 return;
1127
5825fe10
JB		 1128 memset(&qparam, 0, sizeof(qparam));
1129
55de908a
JB		 1130 rcu_read_lock();
1131 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1132 use_11b = (chanctx_conf &&
57fbcce3 1133 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
aa837e1d 1134 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
55de908a 1135 rcu_read_unlock();
5825fe10 1136
239281f8
RL		 1137 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1138
1f4ffde8
FZ		 1139 /* Set defaults according to 802.11-2007 Table 7-37 */
1140 aCWmax = 1023;
1141 if (use_11b)
1142 aCWmin = 31;
1143 else
1144 aCWmin = 15;
1145
1146 /* Confiure old 802.11b/g medium access rules. */
1147 qparam.cw_max = aCWmax;
1148 qparam.cw_min = aCWmin;
1149 qparam.txop = 0;
1150 qparam.aifs = 2;
aa837e1d 1151
1f4ffde8
FZ		 1152 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1153 /* Update if QoS is enabled. */
a8ce8544
SG		 1154 if (enable_qos) {
1155 switch (ac) {
1156 case IEEE80211_AC_BK:
1157 qparam.cw_max = aCWmax;
1158 qparam.cw_min = aCWmin;
1159 qparam.txop = 0;
239281f8
RL		 1160 if (is_ocb)
1161 qparam.aifs = 9;
1162 else
1163 qparam.aifs = 7;
a8ce8544
SG		 1164 break;
1165 /* never happens but let's not leave undefined */
1166 default:
1167 case IEEE80211_AC_BE:
1168 qparam.cw_max = aCWmax;
1169 qparam.cw_min = aCWmin;
1170 qparam.txop = 0;
239281f8
RL		 1171 if (is_ocb)
1172 qparam.aifs = 6;
1173 else
1174 qparam.aifs = 3;
a8ce8544
SG		 1175 break;
1176 case IEEE80211_AC_VI:
1177 qparam.cw_max = aCWmin;
1178 qparam.cw_min = (aCWmin + 1) / 2 - 1;
239281f8
RL		 1179 if (is_ocb)
1180 qparam.txop = 0;
1181 else if (use_11b)
a8ce8544
SG		 1182 qparam.txop = 6016/32;
1183 else
1184 qparam.txop = 3008/32;
239281f8
RL		 1185
1186 if (is_ocb)
1187 qparam.aifs = 3;
1188 else
1189 qparam.aifs = 2;
a8ce8544
SG		 1190 break;
1191 case IEEE80211_AC_VO:
1192 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1193 qparam.cw_min = (aCWmin + 1) / 4 - 1;
239281f8
RL		 1194 if (is_ocb)
1195 qparam.txop = 0;
1196 else if (use_11b)
a8ce8544
SG		 1197 qparam.txop = 3264/32;
1198 else
1199 qparam.txop = 1504/32;
1200 qparam.aifs = 2;
1201 break;
1202 }
aa837e1d 1203 }
5825fe10 1204
ab13315a
KV		 1205 qparam.uapsd = false;
1206
54bcbc69
JB		 1207 sdata->tx_conf[ac] = qparam;
1208 drv_conf_tx(local, sdata, ac, &qparam);
aa837e1d 1209 }
e1b3ec1a 1210
f142c6b9 1211 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
708d50ed
AB		 1212 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1213 sdata->vif.type != NL80211_IFTYPE_NAN) {
a8ce8544 1214 sdata->vif.bss_conf.qos = enable_qos;
3abead59
JB		 1215 if (bss_notify)
1216 ieee80211_bss_info_change_notify(sdata,
1217 BSS_CHANGED_QOS);
d9734979 1218 }
5825fe10 1219}
e50db65c 1220
46900298 1221void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
700e8ea6 1222 u16 transaction, u16 auth_alg, u16 status,
4a3cb702 1223 const u8 *extra, size_t extra_len, const u8 *da,
1672c0e3
JB		 1224 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1225 u32 tx_flags)
46900298
JB		 1226{
1227 struct ieee80211_local *local = sdata->local;
1228 struct sk_buff *skb;
1229 struct ieee80211_mgmt *mgmt;
fffd0934 1230 int err;
46900298 1231
15e230ab 1232 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
744462a9
MS		 1233 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1234 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
d15b8459 1235 if (!skb)
46900298 1236 return;
d15b8459 1237
744462a9 1238 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
46900298
JB		 1239
1240 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
1241 memset(mgmt, 0, 24 + 6);
1242 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1243 IEEE80211_STYPE_AUTH);
efa6a09d 1244 memcpy(mgmt->da, da, ETH_ALEN);
47846c9b 1245 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
46900298
JB		 1246 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1247 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1248 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
700e8ea6 1249 mgmt->u.auth.status_code = cpu_to_le16(status);
46900298
JB		 1250 if (extra)
1251 memcpy(skb_put(skb, extra_len), extra, extra_len);
46900298 1252
fffd0934
JB		 1253 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1254 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1255 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1256 WARN_ON(err);
1257 }
1258
1672c0e3
JB		 1259 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1260 tx_flags;
62ae67be 1261 ieee80211_tx_skb(sdata, skb);
46900298
JB		 1262}
1263
6ae16775
AQ		 1264void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1265 const u8 *bssid, u16 stype, u16 reason,
1266 bool send_frame, u8 *frame_buf)
1267{
1268 struct ieee80211_local *local = sdata->local;
1269 struct sk_buff *skb;
1270 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1271
1272 /* build frame */
1273 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1274 mgmt->duration = 0; /* initialize only */
1275 mgmt->seq_ctrl = 0; /* initialize only */
1276 memcpy(mgmt->da, bssid, ETH_ALEN);
1277 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1278 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1279 /* u.deauth.reason_code == u.disassoc.reason_code */
1280 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1281
1282 if (send_frame) {
1283 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1284 IEEE80211_DEAUTH_FRAME_LEN);
1285 if (!skb)
1286 return;
1287
1288 skb_reserve(skb, local->hw.extra_tx_headroom);
1289
1290 /* copy in frame */
1291 memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN),
1292 mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1293
1294 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1295 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1296 IEEE80211_SKB_CB(skb)->flags |=
1297 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1298
1299 ieee80211_tx_skb(sdata, skb);
1300 }
1301}
1302
c56ef672
DS		 1303static int ieee80211_build_preq_ies_band(struct ieee80211_local *local,
1304 u8 *buffer, size_t buffer_len,
1305 const u8 *ie, size_t ie_len,
57fbcce3 1306 enum nl80211_band band,
c56ef672
DS		 1307 u32 rate_mask,
1308 struct cfg80211_chan_def *chandef,
1309 size_t *offset)
de95a54b
JB		 1310{
1311 struct ieee80211_supported_band *sband;
c604b9f2 1312 u8 *pos = buffer, *end = buffer + buffer_len;
c56ef672 1313 size_t noffset;
8e664fb3 1314 int supp_rates_len, i;
8dcb2003
JM		 1315 u8 rates[32];
1316 int num_rates;
1317 int ext_rates_len;
2103dec1
SW		 1318 int shift;
1319 u32 rate_flags;
40a11ca8 1320 bool have_80mhz = false;
de95a54b 1321
c56ef672
DS		 1322 *offset = 0;
1323
4d36ec58 1324 sband = local->hw.wiphy->bands[band];
d811b3d5
AN		 1325 if (WARN_ON_ONCE(!sband))
1326 return 0;
de95a54b 1327
2103dec1
SW		 1328 rate_flags = ieee80211_chandef_rate_flags(chandef);
1329 shift = ieee80211_chandef_get_shift(chandef);
1330
8dcb2003
JM		 1331 num_rates = 0;
1332 for (i = 0; i < sband->n_bitrates; i++) {
1333 if ((BIT(i) & rate_mask) == 0)
1334 continue; /* skip rate */
2103dec1
SW		 1335 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1336 continue;
1337
1338 rates[num_rates++] =
1339 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1340 (1 << shift) * 5);
8dcb2003
JM		 1341 }
1342
1343 supp_rates_len = min_t(int, num_rates, 8);
8e664fb3 1344
c604b9f2
JB		 1345 if (end - pos < 2 + supp_rates_len)
1346 goto out_err;
de95a54b 1347 *pos++ = WLAN_EID_SUPP_RATES;
8e664fb3 1348 *pos++ = supp_rates_len;
8dcb2003
JM		 1349 memcpy(pos, rates, supp_rates_len);
1350 pos += supp_rates_len;
8e664fb3
JB		 1351
1352 /* insert "request information" if in custom IEs */
1353 if (ie && ie_len) {
1354 static const u8 before_extrates[] = {
1355 WLAN_EID_SSID,
1356 WLAN_EID_SUPP_RATES,
1357 WLAN_EID_REQUEST,
1358 };
1359 noffset = ieee80211_ie_split(ie, ie_len,
1360 before_extrates,
1361 ARRAY_SIZE(before_extrates),
c56ef672
DS		 1362 *offset);
1363 if (end - pos < noffset - *offset)
c604b9f2 1364 goto out_err;
c56ef672
DS		 1365 memcpy(pos, ie + *offset, noffset - *offset);
1366 pos += noffset - *offset;
1367 *offset = noffset;
8e664fb3
JB		 1368 }
1369
8dcb2003
JM		 1370 ext_rates_len = num_rates - supp_rates_len;
1371 if (ext_rates_len > 0) {
c604b9f2
JB		 1372 if (end - pos < 2 + ext_rates_len)
1373 goto out_err;
8e664fb3 1374 *pos++ = WLAN_EID_EXT_SUPP_RATES;
8dcb2003
JM		 1375 *pos++ = ext_rates_len;
1376 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1377 pos += ext_rates_len;
8e664fb3
JB		 1378 }
1379
57fbcce3 1380 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
c604b9f2
JB		 1381 if (end - pos < 3)
1382 goto out_err;
651b5225
JM		 1383 *pos++ = WLAN_EID_DS_PARAMS;
1384 *pos++ = 1;
2103dec1
SW		 1385 *pos++ = ieee80211_frequency_to_channel(
1386 chandef->chan->center_freq);
651b5225
JM		 1387 }
1388
8e664fb3
JB		 1389 /* insert custom IEs that go before HT */
1390 if (ie && ie_len) {
1391 static const u8 before_ht[] = {
1392 WLAN_EID_SSID,
1393 WLAN_EID_SUPP_RATES,
1394 WLAN_EID_REQUEST,
1395 WLAN_EID_EXT_SUPP_RATES,
1396 WLAN_EID_DS_PARAMS,
1397 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1398 };
1399 noffset = ieee80211_ie_split(ie, ie_len,
1400 before_ht, ARRAY_SIZE(before_ht),
c56ef672
DS		 1401 *offset);
1402 if (end - pos < noffset - *offset)
c604b9f2 1403 goto out_err;
c56ef672
DS		 1404 memcpy(pos, ie + *offset, noffset - *offset);
1405 pos += noffset - *offset;
1406 *offset = noffset;
de95a54b
JB		 1407 }
1408
c604b9f2
JB		 1409 if (sband->ht_cap.ht_supported) {
1410 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1411 goto out_err;
ef96a842
BG		 1412 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1413 sband->ht_cap.cap);
c604b9f2 1414 }
5ef2d41a 1415
de95a54b
JB		 1416 /*
1417 * If adding more here, adjust code in main.c
1418 * that calculates local->scan_ies_len.
1419 */
1420
4d952300 1421 /* insert custom IEs that go before VHT */
8e664fb3 1422 if (ie && ie_len) {
4d952300
JB		 1423 static const u8 before_vht[] = {
1424 WLAN_EID_SSID,
1425 WLAN_EID_SUPP_RATES,
1426 WLAN_EID_REQUEST,
1427 WLAN_EID_EXT_SUPP_RATES,
1428 WLAN_EID_DS_PARAMS,
1429 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1430 WLAN_EID_HT_CAPABILITY,
1431 WLAN_EID_BSS_COEX_2040,
1432 WLAN_EID_EXT_CAPABILITY,
1433 WLAN_EID_SSID_LIST,
1434 WLAN_EID_CHANNEL_USAGE,
1435 WLAN_EID_INTERWORKING,
1436 /* mesh ID can't happen here */
1437 /* 60 GHz can't happen here right now */
1438 };
1439 noffset = ieee80211_ie_split(ie, ie_len,
1440 before_vht, ARRAY_SIZE(before_vht),
c56ef672
DS		 1441 *offset);
1442 if (end - pos < noffset - *offset)
c604b9f2 1443 goto out_err;
c56ef672
DS		 1444 memcpy(pos, ie + *offset, noffset - *offset);
1445 pos += noffset - *offset;
1446 *offset = noffset;
de95a54b
JB		 1447 }
1448
40a11ca8
JB		 1449 /* Check if any channel in this sband supports at least 80 MHz */
1450 for (i = 0; i < sband->n_channels; i++) {
fa44b988
AN		 1451 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1452 IEEE80211_CHAN_NO_80MHZ))
1453 continue;
1454
1455 have_80mhz = true;
1456 break;
40a11ca8
JB		 1457 }
1458
1459 if (sband->vht_cap.vht_supported && have_80mhz) {
c604b9f2
JB		 1460 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1461 goto out_err;
ba0afa2f
MP		 1462 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1463 sband->vht_cap.cap);
c604b9f2 1464 }
ba0afa2f 1465
c604b9f2
JB		 1466 return pos - buffer;
1467 out_err:
1468 WARN_ONCE(1, "not enough space for preq IEs\n");
de95a54b
JB		 1469 return pos - buffer;
1470}
1471
c56ef672
DS		 1472int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1473 size_t buffer_len,
1474 struct ieee80211_scan_ies *ie_desc,
1475 const u8 *ie, size_t ie_len,
1476 u8 bands_used, u32 *rate_masks,
1477 struct cfg80211_chan_def *chandef)
1478{
1479 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1480 int i;
1481
1482 memset(ie_desc, 0, sizeof(*ie_desc));
1483
57fbcce3 1484 for (i = 0; i < NUM_NL80211_BANDS; i++) {
c56ef672
DS		 1485 if (bands_used & BIT(i)) {
1486 pos += ieee80211_build_preq_ies_band(local,
1487 buffer + pos,
1488 buffer_len - pos,
1489 ie, ie_len, i,
1490 rate_masks[i],
1491 chandef,
1492 &custom_ie_offset);
1493 ie_desc->ies[i] = buffer + old_pos;
1494 ie_desc->len[i] = pos - old_pos;
1495 old_pos = pos;
1496 }
1497 }
1498
1499 /* add any remaining custom IEs */
1500 if (ie && ie_len) {
1501 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1502 "not enough space for preq custom IEs\n"))
1503 return pos;
1504 memcpy(buffer + pos, ie + custom_ie_offset,
1505 ie_len - custom_ie_offset);
1506 ie_desc->common_ies = buffer + pos;
1507 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1508 pos += ie_len - custom_ie_offset;
1509 }
1510
1511 return pos;
1512};
1513
a619a4c0 1514struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
a344d677
JB		 1515 const u8 *src, const u8 *dst,
1516 u32 ratemask,
6b77863b 1517 struct ieee80211_channel *chan,
a619a4c0 1518 const u8 *ssid, size_t ssid_len,
a806c558
PS		 1519 const u8 *ie, size_t ie_len,
1520 bool directed)
46900298
JB		 1521{
1522 struct ieee80211_local *local = sdata->local;
2103dec1 1523 struct cfg80211_chan_def chandef;
46900298
JB		 1524 struct sk_buff *skb;
1525 struct ieee80211_mgmt *mgmt;
b9a9ada1 1526 int ies_len;
57fbcce3 1527 u32 rate_masks[NUM_NL80211_BANDS] = {};
c56ef672 1528 struct ieee80211_scan_ies dummy_ie_desc;
46900298 1529
a806c558
PS		 1530 /*
1531 * Do not send DS Channel parameter for directed probe requests
1532 * in order to maximize the chance that we get a response. Some
1533 * badly-behaved APs don't respond when this parameter is included.
1534 */
2103dec1 1535 chandef.width = sdata->vif.bss_conf.chandef.width;
a806c558 1536 if (directed)
2103dec1 1537 chandef.chan = NULL;
a806c558 1538 else
2103dec1 1539 chandef.chan = chan;
651b5225 1540
a344d677
JB		 1541 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1542 100 + ie_len);
5b2bbf75 1543 if (!skb)
b9a9ada1
JB		 1544 return NULL;
1545
c56ef672 1546 rate_masks[chan->band] = ratemask;
b9a9ada1 1547 ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
c56ef672
DS		 1548 skb_tailroom(skb), &dummy_ie_desc,
1549 ie, ie_len, BIT(chan->band),
1550 rate_masks, &chandef);
b9a9ada1 1551 skb_put(skb, ies_len);
7c12ce8b 1552
46900298 1553 if (dst) {
7c12ce8b 1554 mgmt = (struct ieee80211_mgmt *) skb->data;
46900298
JB		 1555 memcpy(mgmt->da, dst, ETH_ALEN);
1556 memcpy(mgmt->bssid, dst, ETH_ALEN);
46900298 1557 }
46900298 1558
62ae67be 1559 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
5b2bbf75 1560
a619a4c0
JO		 1561 return skb;
1562}
1563
a344d677
JB		 1564void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1565 const u8 *src, const u8 *dst,
a619a4c0 1566 const u8 *ssid, size_t ssid_len,
a806c558 1567 const u8 *ie, size_t ie_len,
1672c0e3 1568 u32 ratemask, bool directed, u32 tx_flags,
55de908a 1569 struct ieee80211_channel *channel, bool scan)
a619a4c0
JO		 1570{
1571 struct sk_buff *skb;
1572
a344d677 1573 skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel,
6b77863b 1574 ssid, ssid_len,
85a237fe 1575 ie, ie_len, directed);
aad14ceb 1576 if (skb) {
1672c0e3 1577 IEEE80211_SKB_CB(skb)->flags |= tx_flags;
55de908a
JB		 1578 if (scan)
1579 ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band);
1580 else
1581 ieee80211_tx_skb(sdata, skb);
aad14ceb 1582 }
46900298
JB		 1583}
1584
2103dec1 1585u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
46900298 1586 struct ieee802_11_elems *elems,
57fbcce3 1587 enum nl80211_band band, u32 *basic_rates)
46900298
JB		 1588{
1589 struct ieee80211_supported_band *sband;
46900298 1590 size_t num_rates;
2103dec1
SW		 1591 u32 supp_rates, rate_flags;
1592 int i, j, shift;
1593 sband = sdata->local->hw.wiphy->bands[band];
1594
1595 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1596 shift = ieee80211_vif_get_shift(&sdata->vif);
46900298 1597
4ee73f33
MK		 1598 if (WARN_ON(!sband))
1599 return 1;
46900298 1600
46900298
JB		 1601 num_rates = sband->n_bitrates;
1602 supp_rates = 0;
1603 for (i = 0; i < elems->supp_rates_len +
1604 elems->ext_supp_rates_len; i++) {
1605 u8 rate = 0;
1606 int own_rate;
9ebb61a2 1607 bool is_basic;
46900298
JB		 1608 if (i < elems->supp_rates_len)
1609 rate = elems->supp_rates[i];
1610 else if (elems->ext_supp_rates)
1611 rate = elems->ext_supp_rates
1612 [i - elems->supp_rates_len];
1613 own_rate = 5 * (rate & 0x7f);
9ebb61a2
AN		 1614 is_basic = !!(rate & 0x80);
1615
1616 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
1617 continue;
1618
1619 for (j = 0; j < num_rates; j++) {
2103dec1
SW		 1620 int brate;
1621 if ((rate_flags & sband->bitrates[j].flags)
1622 != rate_flags)
1623 continue;
1624
1625 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
1626 1 << shift);
1627
1628 if (brate == own_rate) {
46900298 1629 supp_rates |= BIT(j);
9ebb61a2
AN		 1630 if (basic_rates && is_basic)
1631 *basic_rates |= BIT(j);
1632 }
1633 }
46900298
JB		 1634 }
1635 return supp_rates;
1636}
f2753ddb 1637
84f6a01c
JB		 1638void ieee80211_stop_device(struct ieee80211_local *local)
1639{
1640 ieee80211_led_radio(local, false);
67408c8c 1641 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
84f6a01c
JB		 1642
1643 cancel_work_sync(&local->reconfig_filter);
84f6a01c
JB		 1644
1645 flush_workqueue(local->workqueue);
678f415f 1646 drv_stop(local);
84f6a01c
JB		 1647}
1648
74430f94
JB		 1649static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
1650 bool aborted)
1651{
1652 /* It's possible that we don't handle the scan completion in
1653 * time during suspend, so if it's still marked as completed
1654 * here, queue the work and flush it to clean things up.
1655 * Instead of calling the worker function directly here, we
1656 * really queue it to avoid potential races with other flows
1657 * scheduling the same work.
1658 */
1659 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
1660 /* If coming from reconfiguration failure, abort the scan so
1661 * we don't attempt to continue a partial HW scan - which is
1662 * possible otherwise if (e.g.) the 2.4 GHz portion was the
1663 * completed scan, and a 5 GHz portion is still pending.
1664 */
1665 if (aborted)
1666 set_bit(SCAN_ABORTED, &local->scanning);
1667 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
1668 flush_delayed_work(&local->scan_work);
1669 }
1670}
1671
f6837ba8
JB		 1672static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
1673{
1674 struct ieee80211_sub_if_data *sdata;
1675 struct ieee80211_chanctx *ctx;
1676
1677 /*
1678 * We get here if during resume the device can't be restarted properly.
1679 * We might also get here if this happens during HW reset, which is a
1680 * slightly different situation and we need to drop all connections in
1681 * the latter case.
1682 *
1683 * Ask cfg80211 to turn off all interfaces, this will result in more
1684 * warnings but at least we'll then get into a clean stopped state.
1685 */
1686
1687 local->resuming = false;
1688 local->suspended = false;
7584f88f 1689 local->in_reconfig = false;
f6837ba8 1690
74430f94
JB		 1691 ieee80211_flush_completed_scan(local, true);
1692
f6837ba8
JB		 1693 /* scheduled scan clearly can't be running any more, but tell
1694 * cfg80211 and clear local state
1695 */
1696 ieee80211_sched_scan_end(local);
1697
1698 list_for_each_entry(sdata, &local->interfaces, list)
1699 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
1700
1701 /* Mark channel contexts as not being in the driver any more to avoid
1702 * removing them from the driver during the shutdown process...
1703 */
1704 mutex_lock(&local->chanctx_mtx);
1705 list_for_each_entry(ctx, &local->chanctx_list, list)
1706 ctx->driver_present = false;
1707 mutex_unlock(&local->chanctx_mtx);
1708
1709 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
1710}
1711
153a5fc4
SG		 1712static void ieee80211_assign_chanctx(struct ieee80211_local *local,
1713 struct ieee80211_sub_if_data *sdata)
1714{
1715 struct ieee80211_chanctx_conf *conf;
1716 struct ieee80211_chanctx *ctx;
1717
1718 if (!local->use_chanctx)
1719 return;
1720
1721 mutex_lock(&local->chanctx_mtx);
1722 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1723 lockdep_is_held(&local->chanctx_mtx));
1724 if (conf) {
1725 ctx = container_of(conf, struct ieee80211_chanctx, conf);
1726 drv_assign_vif_chanctx(local, sdata, ctx);
1727 }
1728 mutex_unlock(&local->chanctx_mtx);
1729}
1730
1ea2c864
JB		 1731static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
1732{
1733 struct ieee80211_local *local = sdata->local;
1734 struct sta_info *sta;
1735
1736 /* add STAs back */
1737 mutex_lock(&local->sta_mtx);
1738 list_for_each_entry(sta, &local->sta_list, list) {
1739 enum ieee80211_sta_state state;
1740
1741 if (!sta->uploaded || sta->sdata != sdata)
1742 continue;
1743
1744 for (state = IEEE80211_STA_NOTEXIST;
1745 state < sta->sta_state; state++)
1746 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1747 state + 1));
1748 }
1749 mutex_unlock(&local->sta_mtx);
1750}
1751
167e33f4
AB		 1752static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
1753{
1754 struct cfg80211_nan_func *func, **funcs;
1755 int res, id, i = 0;
1756
1757 res = drv_start_nan(sdata->local, sdata,
1758 &sdata->u.nan.conf);
1759 if (WARN_ON(res))
1760 return res;
1761
1762 funcs = kzalloc((sdata->local->hw.max_nan_de_entries + 1) *
1763 sizeof(*funcs), GFP_KERNEL);
1764 if (!funcs)
1765 return -ENOMEM;
1766
1767 /* Add all the functions:
1768 * This is a little bit ugly. We need to call a potentially sleeping
1769 * callback for each NAN function, so we can't hold the spinlock.
1770 */
1771 spin_lock_bh(&sdata->u.nan.func_lock);
1772
1773 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
1774 funcs[i++] = func;
1775
1776 spin_unlock_bh(&sdata->u.nan.func_lock);
1777
1778 for (i = 0; funcs[i]; i++) {
1779 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
1780 if (WARN_ON(res))
1781 ieee80211_nan_func_terminated(&sdata->vif,
1782 funcs[i]->instance_id,
1783 NL80211_NAN_FUNC_TERM_REASON_ERROR,
1784 GFP_KERNEL);
1785 }
1786
1787 kfree(funcs);
1788
1789 return 0;
1790}
1791
f2753ddb
JB		 1792int ieee80211_reconfig(struct ieee80211_local *local)
1793{
1794 struct ieee80211_hw *hw = &local->hw;
1795 struct ieee80211_sub_if_data *sdata;
55de908a 1796 struct ieee80211_chanctx *ctx;
f2753ddb 1797 struct sta_info *sta;
2683d65b 1798 int res, i;
d888130a 1799 bool reconfig_due_to_wowlan = false;
d43c6b6e 1800 struct ieee80211_sub_if_data *sched_scan_sdata;
6ea0a69c 1801 struct cfg80211_sched_scan_request *sched_scan_req;
d43c6b6e 1802 bool sched_scan_stopped = false;
b0485e9f 1803 bool suspended = local->suspended;
d888130a 1804
0f8b8245
EP		 1805 /* nothing to do if HW shouldn't run */
1806 if (!local->open_count)
1807 goto wake_up;
1808
8f21b0ad 1809#ifdef CONFIG_PM
b0485e9f 1810 if (suspended)
ceb99fe0 1811 local->resuming = true;
f2753ddb 1812
eecc4800 1813 if (local->wowlan) {
b0485e9f
EP		 1814 /*
1815 * In the wowlan case, both mac80211 and the device
1816 * are functional when the resume op is called, so
1817 * clear local->suspended so the device could operate
1818 * normally (e.g. pass rx frames).
1819 */
1820 local->suspended = false;
eecc4800 1821 res = drv_resume(local);
27b3eb9c 1822 local->wowlan = false;
eecc4800
JB		 1823 if (res < 0) {
1824 local->resuming = false;
1825 return res;
1826 }
1827 if (res == 0)
1828 goto wake_up;
1829 WARN_ON(res > 1);
1830 /*
1831 * res is 1, which means the driver requested
1832 * to go through a regular reset on wakeup.
b0485e9f 1833 * restore local->suspended in this case.
eecc4800 1834 */
d888130a 1835 reconfig_due_to_wowlan = true;
b0485e9f 1836 local->suspended = true;
eecc4800
JB		 1837 }
1838#endif
f2753ddb 1839
43d6df00
EP		 1840 /*
1841 * In case of hw_restart during suspend (without wowlan),
1842 * cancel restart work, as we are reconfiguring the device
1843 * anyway.
1844 * Note that restart_work is scheduled on a frozen workqueue,
1845 * so we can't deadlock in this case.
1846 */
1847 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
1848 cancel_work_sync(&local->restart_work);
1849
968a76ce
EP		 1850 local->started = false;
1851
94f9b97b
JB		 1852 /*
1853 * Upon resume hardware can sometimes be goofy due to
1854 * various platform / driver / bus issues, so restarting
1855 * the device may at times not work immediately. Propagate
1856 * the error.
1857 */
1858 res = drv_start(local);
1859 if (res) {
b0485e9f 1860 if (suspended)
f6837ba8
JB		 1861 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
1862 else
1863 WARN(1, "Hardware became unavailable during restart.\n");
1864 ieee80211_handle_reconfig_failure(local);
94f9b97b 1865 return res;
f2753ddb
JB		 1866 }
1867
7f281975
YAP		 1868 /* setup fragmentation threshold */
1869 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
1870
1871 /* setup RTS threshold */
1872 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
1873
1874 /* reset coverage class */
1875 drv_set_coverage_class(local, hw->wiphy->coverage_class);
1876
94f9b97b
JB		 1877 ieee80211_led_radio(local, true);
1878 ieee80211_mod_tpt_led_trig(local,
1879 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
1880
f2753ddb 1881 /* add interfaces */
4b6f1dd6
JB		 1882 sdata = rtnl_dereference(local->monitor_sdata);
1883 if (sdata) {
3c3e21e7
JB		 1884 /* in HW restart it exists already */
1885 WARN_ON(local->resuming);
4b6f1dd6
JB		 1886 res = drv_add_interface(local, sdata);
1887 if (WARN_ON(res)) {
0c2bef46 1888 RCU_INIT_POINTER(local->monitor_sdata, NULL);
4b6f1dd6
JB		 1889 synchronize_net();
1890 kfree(sdata);
1891 }
1892 }
1893
f2753ddb
JB		 1894 list_for_each_entry(sdata, &local->interfaces, list) {
1895 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1896 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
c8fff3dc 1897 ieee80211_sdata_running(sdata)) {
7b7eab6f 1898 res = drv_add_interface(local, sdata);
c8fff3dc
LC		 1899 if (WARN_ON(res))
1900 break;
1901 }
1902 }
1903
1904 /* If adding any of the interfaces failed above, roll back and
1905 * report failure.
1906 */
1907 if (res) {
1908 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
1909 list)
1910 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1911 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1912 ieee80211_sdata_running(sdata))
1913 drv_remove_interface(local, sdata);
1914 ieee80211_handle_reconfig_failure(local);
1915 return res;
f2753ddb
JB		 1916 }
1917
55de908a 1918 /* add channel contexts */
f0dea9c7
AS		 1919 if (local->use_chanctx) {
1920 mutex_lock(&local->chanctx_mtx);
1921 list_for_each_entry(ctx, &local->chanctx_list, list)
5bcae31d
MK		 1922 if (ctx->replace_state !=
1923 IEEE80211_CHANCTX_REPLACES_OTHER)
1924 WARN_ON(drv_add_chanctx(local, ctx));
f0dea9c7 1925 mutex_unlock(&local->chanctx_mtx);
55de908a 1926
7df180f7
ZG		 1927 sdata = rtnl_dereference(local->monitor_sdata);
1928 if (sdata && ieee80211_sdata_running(sdata))
1929 ieee80211_assign_chanctx(local, sdata);
1930 }
fe5f2559 1931
f2753ddb
JB		 1932 /* reconfigure hardware */
1933 ieee80211_hw_config(local, ~0);
1934
f2753ddb 1935 ieee80211_configure_filter(local);
f2753ddb
JB		 1936
1937 /* Finally also reconfigure all the BSS information */
1938 list_for_each_entry(sdata, &local->interfaces, list) {
ac8dd506
JB		 1939 u32 changed;
1940
9607e6b6 1941 if (!ieee80211_sdata_running(sdata))
f2753ddb 1942 continue;
ac8dd506 1943
1ea2c864
JB		 1944 ieee80211_assign_chanctx(local, sdata);
1945
1946 switch (sdata->vif.type) {
1947 case NL80211_IFTYPE_AP_VLAN:
1948 case NL80211_IFTYPE_MONITOR:
1949 break;
1950 default:
1951 ieee80211_reconfig_stations(sdata);
1952 /* fall through */
1953 case NL80211_IFTYPE_AP: /* AP stations are handled later */
1954 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1955 drv_conf_tx(local, sdata, i,
1956 &sdata->tx_conf[i]);
1957 break;
1958 }
1959
ac8dd506
JB		 1960 /* common change flags for all interface types */
1961 changed = BSS_CHANGED_ERP_CTS_PROT |
1962 BSS_CHANGED_ERP_PREAMBLE |
1963 BSS_CHANGED_ERP_SLOT |
1964 BSS_CHANGED_HT |
1965 BSS_CHANGED_BASIC_RATES |
1966 BSS_CHANGED_BEACON_INT |
1967 BSS_CHANGED_BSSID |
4ced3f74 1968 BSS_CHANGED_CQM |
55de47f6 1969 BSS_CHANGED_QOS |
1ea6f9c0
JB		 1970 BSS_CHANGED_IDLE |
1971 BSS_CHANGED_TXPOWER;
ac8dd506 1972
b5a33d52 1973 if (sdata->vif.mu_mimo_owner)
23a1f8d4
SS		 1974 changed |= BSS_CHANGED_MU_GROUPS;
1975
f2753ddb
JB		 1976 switch (sdata->vif.type) {
1977 case NL80211_IFTYPE_STATION:
0d392e93 1978 changed |= BSS_CHANGED_ASSOC |
ab095877
EP		 1979 BSS_CHANGED_ARP_FILTER |
1980 BSS_CHANGED_PS;
c65dd147 1981
989c6505
AB		 1982 /* Re-send beacon info report to the driver */
1983 if (sdata->u.mgd.have_beacon)
1984 changed |= BSS_CHANGED_BEACON_INFO;
c65dd147 1985
8d61ffa5 1986 sdata_lock(sdata);
ac8dd506 1987 ieee80211_bss_info_change_notify(sdata, changed);
8d61ffa5 1988 sdata_unlock(sdata);
ac8dd506 1989 break;
6e0bd6c3 1990 case NL80211_IFTYPE_OCB:
239281f8
RL		 1991 changed |= BSS_CHANGED_OCB;
1992 ieee80211_bss_info_change_notify(sdata, changed);
6e0bd6c3 1993 break;
f2753ddb 1994 case NL80211_IFTYPE_ADHOC:
ac8dd506
JB		 1995 changed |= BSS_CHANGED_IBSS;
1996 /* fall through */
f2753ddb 1997 case NL80211_IFTYPE_AP:
339afbf4 1998 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
e7979ac7 1999
1041638f 2000 if (sdata->vif.type == NL80211_IFTYPE_AP) {
e7979ac7
AN		 2001 changed |= BSS_CHANGED_AP_PROBE_RESP;
2002
1041638f
JB		 2003 if (rcu_access_pointer(sdata->u.ap.beacon))
2004 drv_start_ap(local, sdata);
2005 }
2006
7827493b 2007 /* fall through */
f2753ddb 2008 case NL80211_IFTYPE_MESH_POINT:
8da34932
JB		 2009 if (sdata->vif.bss_conf.enable_beacon) {
2010 changed |= BSS_CHANGED_BEACON |
2011 BSS_CHANGED_BEACON_ENABLED;
2012 ieee80211_bss_info_change_notify(sdata, changed);
2013 }
f2753ddb 2014 break;
167e33f4
AB		 2015 case NL80211_IFTYPE_NAN:
2016 res = ieee80211_reconfig_nan(sdata);
2017 if (res < 0) {
2018 ieee80211_handle_reconfig_failure(local);
2019 return res;
2020 }
2021 break;
f2753ddb 2022 case NL80211_IFTYPE_WDS:
f2753ddb
JB		 2023 case NL80211_IFTYPE_AP_VLAN:
2024 case NL80211_IFTYPE_MONITOR:
98104fde 2025 case NL80211_IFTYPE_P2P_DEVICE:
b205786e 2026 /* nothing to do */
f142c6b9 2027 break;
f2753ddb 2028 case NL80211_IFTYPE_UNSPECIFIED:
2e161f78 2029 case NUM_NL80211_IFTYPES:
2ca27bcf
JB		 2030 case NL80211_IFTYPE_P2P_CLIENT:
2031 case NL80211_IFTYPE_P2P_GO:
f2753ddb
JB		 2032 WARN_ON(1);
2033 break;
2034 }
2035 }
2036
4a733ef1 2037 ieee80211_recalc_ps(local);
8e1b23b9 2038
6e1b1b24
EP		 2039 /*
2040 * The sta might be in psm against the ap (e.g. because
2041 * this was the state before a hw restart), so we
2042 * explicitly send a null packet in order to make sure
2043 * it'll sync against the ap (and get out of psm).
2044 */
2045 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2046 list_for_each_entry(sdata, &local->interfaces, list) {
2047 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2048 continue;
20f544ee
JB		 2049 if (!sdata->u.mgd.associated)
2050 continue;
6e1b1b24 2051
076cdcb1 2052 ieee80211_send_nullfunc(local, sdata, false);
6e1b1b24
EP		 2053 }
2054 }
2055
2e8d397e
AN		 2056 /* APs are now beaconing, add back stations */
2057 mutex_lock(&local->sta_mtx);
2058 list_for_each_entry(sta, &local->sta_list, list) {
2059 enum ieee80211_sta_state state;
2060
2061 if (!sta->uploaded)
2062 continue;
2063
2064 if (sta->sdata->vif.type != NL80211_IFTYPE_AP)
2065 continue;
2066
2067 for (state = IEEE80211_STA_NOTEXIST;
2068 state < sta->sta_state; state++)
2069 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2070 state + 1));
2071 }
2072 mutex_unlock(&local->sta_mtx);
2073
7b21aea0 2074 /* add back keys */
f9dca80b
MK		 2075 list_for_each_entry(sdata, &local->interfaces, list)
2076 ieee80211_reset_crypto_tx_tailroom(sdata);
2077
7b21aea0
ES		 2078 list_for_each_entry(sdata, &local->interfaces, list)
2079 if (ieee80211_sdata_running(sdata))
2080 ieee80211_enable_keys(sdata);
2081
0d440ea2
EP		 2082 /* Reconfigure sched scan if it was interrupted by FW restart */
2083 mutex_lock(&local->mtx);
2084 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2085 lockdep_is_held(&local->mtx));
2086 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2087 lockdep_is_held(&local->mtx));
2088 if (sched_scan_sdata && sched_scan_req)
2089 /*
2090 * Sched scan stopped, but we don't want to report it. Instead,
2091 * we're trying to reschedule. However, if more than one scan
2092 * plan was set, we cannot reschedule since we don't know which
2093 * scan plan was currently running (and some scan plans may have
2094 * already finished).
2095 */
2096 if (sched_scan_req->n_scan_plans > 1 ||
2097 __ieee80211_request_sched_scan_start(sched_scan_sdata,
b9f628fc
EP		 2098 sched_scan_req)) {
2099 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2100 RCU_INIT_POINTER(local->sched_scan_req, NULL);
0d440ea2 2101 sched_scan_stopped = true;
b9f628fc 2102 }
0d440ea2
EP		 2103 mutex_unlock(&local->mtx);
2104
2105 if (sched_scan_stopped)
2106 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy);
2107
c6209488 2108 wake_up:
470f4d61
EP		 2109 if (local->in_reconfig) {
2110 local->in_reconfig = false;
2111 barrier();
2112
2113 /* Restart deferred ROCs */
2114 mutex_lock(&local->mtx);
2115 ieee80211_start_next_roc(local);
2116 mutex_unlock(&local->mtx);
2117 }
04800ada 2118
3c3e21e7
JB		 2119 if (local->monitors == local->open_count && local->monitors > 0)
2120 ieee80211_add_virtual_monitor(local);
2121
2a419056
JB		 2122 /*
2123 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2124 * sessions can be established after a resume.
2125 *
2126 * Also tear down aggregation sessions since reconfiguring
2127 * them in a hardware restart scenario is not easily done
2128 * right now, and the hardware will have lost information
2129 * about the sessions, but we and the AP still think they
2130 * are active. This is really a workaround though.
2131 */
30686bf7 2132 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2a419056
JB		 2133 mutex_lock(&local->sta_mtx);
2134
2135 list_for_each_entry(sta, &local->sta_list, list) {
27392719
EP		 2136 if (!local->resuming)
2137 ieee80211_sta_tear_down_BA_sessions(
2138 sta, AGG_STOP_LOCAL_REQUEST);
c2c98fde 2139 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
74e2bd1f 2140 }
2a419056
JB		 2141
2142 mutex_unlock(&local->sta_mtx);
74e2bd1f 2143 }
74e2bd1f 2144
445ea4e8 2145 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 2146 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2147 false);
f2753ddb 2148
5bb644a0
JB		 2149 /*
2150 * If this is for hw restart things are still running.
2151 * We may want to change that later, however.
2152 */
b0485e9f 2153 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
cf2c92d8 2154 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
8f21b0ad 2155
b0485e9f 2156 if (!suspended)
5bb644a0
JB		 2157 return 0;
2158
2159#ifdef CONFIG_PM
ceb99fe0 2160 /* first set suspended false, then resuming */
5bb644a0 2161 local->suspended = false;
ceb99fe0
JB		 2162 mb();
2163 local->resuming = false;
5bb644a0 2164
74430f94 2165 ieee80211_flush_completed_scan(local, false);
9120d94e 2166
0f8b8245 2167 if (local->open_count && !reconfig_due_to_wowlan)
cf2c92d8
EP		 2168 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2169
b8360ab8
JB		 2170 list_for_each_entry(sdata, &local->interfaces, list) {
2171 if (!ieee80211_sdata_running(sdata))
2172 continue;
2173 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2174 ieee80211_sta_restart(sdata);
2175 }
2176
26d59535 2177 mod_timer(&local->sta_cleanup, jiffies + 1);
5bb644a0
JB		 2178#else
2179 WARN_ON(1);
2180#endif
d43c6b6e 2181
f2753ddb
JB		 2182 return 0;
2183}
42935eca 2184
95acac61
JB		 2185void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2186{
2187 struct ieee80211_sub_if_data *sdata;
2188 struct ieee80211_local *local;
2189 struct ieee80211_key *key;
2190
2191 if (WARN_ON(!vif))
2192 return;
2193
2194 sdata = vif_to_sdata(vif);
2195 local = sdata->local;
2196
2197 if (WARN_ON(!local->resuming))
2198 return;
2199
2200 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2201 return;
2202
2203 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2204
2205 mutex_lock(&local->key_mtx);
2206 list_for_each_entry(key, &sdata->key_list, list)
2207 key->flags |= KEY_FLAG_TAINTED;
2208 mutex_unlock(&local->key_mtx);
2209}
2210EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2211
04ecd257 2212void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
0f78231b 2213{
04ecd257
JB		 2214 struct ieee80211_local *local = sdata->local;
2215 struct ieee80211_chanctx_conf *chanctx_conf;
2216 struct ieee80211_chanctx *chanctx;
025e6be2 2217
04ecd257 2218 mutex_lock(&local->chanctx_mtx);
0f78231b 2219
04ecd257
JB		 2220 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2221 lockdep_is_held(&local->chanctx_mtx));
0f78231b 2222
c189a685
AO		 2223 /*
2224 * This function can be called from a work, thus it may be possible
2225 * that the chanctx_conf is removed (due to a disconnection, for
2226 * example).
2227 * So nothing should be done in such case.
2228 */
2229 if (!chanctx_conf)
5d8e4237 2230 goto unlock;
0f78231b 2231
04ecd257
JB		 2232 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2233 ieee80211_recalc_smps_chanctx(local, chanctx);
5d8e4237 2234 unlock:
04ecd257 2235 mutex_unlock(&local->chanctx_mtx);
0f78231b 2236}
8e664fb3 2237
21f659bf
EP		 2238void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2239{
2240 struct ieee80211_local *local = sdata->local;
2241 struct ieee80211_chanctx_conf *chanctx_conf;
2242 struct ieee80211_chanctx *chanctx;
2243
2244 mutex_lock(&local->chanctx_mtx);
2245
2246 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2247 lockdep_is_held(&local->chanctx_mtx));
2248
2249 if (WARN_ON_ONCE(!chanctx_conf))
2250 goto unlock;
2251
2252 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2253 ieee80211_recalc_chanctx_min_def(local, chanctx);
2254 unlock:
2255 mutex_unlock(&local->chanctx_mtx);
2256}
2257
8e664fb3
JB		 2258size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2259{
2260 size_t pos = offset;
2261
2262 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2263 pos += 2 + ies[pos + 1];
2264
2265 return pos;
2266}
615f7b9b
MV		 2267
2268static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2269 int rssi_min_thold,
2270 int rssi_max_thold)
2271{
2272 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2273
2274 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2275 return;
2276
2277 /*
2278 * Scale up threshold values before storing it, as the RSSI averaging
2279 * algorithm uses a scaled up value as well. Change this scaling
2280 * factor if the RSSI averaging algorithm changes.
2281 */
2282 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2283 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2284}
2285
2286void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2287 int rssi_min_thold,
2288 int rssi_max_thold)
2289{
2290 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2291
2292 WARN_ON(rssi_min_thold == rssi_max_thold ||
2293 rssi_min_thold > rssi_max_thold);
2294
2295 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2296 rssi_max_thold);
2297}
2298EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2299
2300void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2301{
2302 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2303
2304 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2305}
2306EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
768db343 2307
ef96a842 2308u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
42e7aa77
AS		 2309 u16 cap)
2310{
2311 __le16 tmp;
2312
2313 *pos++ = WLAN_EID_HT_CAPABILITY;
2314 *pos++ = sizeof(struct ieee80211_ht_cap);
2315 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2316
2317 /* capability flags */
2318 tmp = cpu_to_le16(cap);
2319 memcpy(pos, &tmp, sizeof(u16));
2320 pos += sizeof(u16);
2321
2322 /* AMPDU parameters */
ef96a842
BG		 2323 *pos++ = ht_cap->ampdu_factor |
2324 (ht_cap->ampdu_density <<
42e7aa77
AS		 2325 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2326
2327 /* MCS set */
ef96a842
BG		 2328 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2329 pos += sizeof(ht_cap->mcs);
42e7aa77
AS		 2330
2331 /* extended capabilities */
2332 pos += sizeof(__le16);
2333
2334 /* BF capabilities */
2335 pos += sizeof(__le32);
2336
2337 /* antenna selection */
2338 pos += sizeof(u8);
2339
2340 return pos;
2341}
2342
ba0afa2f 2343u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
cc3983d8 2344 u32 cap)
ba0afa2f
MP		 2345{
2346 __le32 tmp;
2347
2348 *pos++ = WLAN_EID_VHT_CAPABILITY;
d4950281
MP		 2349 *pos++ = sizeof(struct ieee80211_vht_cap);
2350 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
ba0afa2f
MP		 2351
2352 /* capability flags */
2353 tmp = cpu_to_le32(cap);
2354 memcpy(pos, &tmp, sizeof(u32));
2355 pos += sizeof(u32);
2356
2357 /* VHT MCS set */
2358 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2359 pos += sizeof(vht_cap->vht_mcs);
2360
2361 return pos;
2362}
2363
074d46d1 2364u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
4bf88530 2365 const struct cfg80211_chan_def *chandef,
57f255f5 2366 u16 prot_mode, bool rifs_mode)
42e7aa77 2367{
074d46d1 2368 struct ieee80211_ht_operation *ht_oper;
42e7aa77 2369 /* Build HT Information */
074d46d1
JB		 2370 *pos++ = WLAN_EID_HT_OPERATION;
2371 *pos++ = sizeof(struct ieee80211_ht_operation);
2372 ht_oper = (struct ieee80211_ht_operation *)pos;
4bf88530
JB		 2373 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2374 chandef->chan->center_freq);
2375 switch (chandef->width) {
2376 case NL80211_CHAN_WIDTH_160:
2377 case NL80211_CHAN_WIDTH_80P80:
2378 case NL80211_CHAN_WIDTH_80:
2379 case NL80211_CHAN_WIDTH_40:
2380 if (chandef->center_freq1 > chandef->chan->center_freq)
2381 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2382 else
2383 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
42e7aa77 2384 break;
42e7aa77 2385 default:
074d46d1 2386 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
42e7aa77
AS		 2387 break;
2388 }
aee286c2 2389 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4bf88530
JB		 2390 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2391 chandef->width != NL80211_CHAN_WIDTH_20)
074d46d1 2392 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
ff3cc5f4 2393
57f255f5
AN		 2394 if (rifs_mode)
2395 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2396
431e3154 2397 ht_oper->operation_mode = cpu_to_le16(prot_mode);
074d46d1 2398 ht_oper->stbc_param = 0x0000;
42e7aa77
AS		 2399
2400 /* It seems that Basic MCS set and Supported MCS set
2401 are identical for the first 10 bytes */
074d46d1
JB		 2402 memset(&ht_oper->basic_set, 0, 16);
2403 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
42e7aa77 2404
074d46d1 2405 return pos + sizeof(struct ieee80211_ht_operation);
42e7aa77
AS		 2406}
2407
fb28ec0c
AN		 2408u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2409 const struct cfg80211_chan_def *chandef)
2410{
2411 struct ieee80211_vht_operation *vht_oper;
2412
2413 *pos++ = WLAN_EID_VHT_OPERATION;
2414 *pos++ = sizeof(struct ieee80211_vht_operation);
2415 vht_oper = (struct ieee80211_vht_operation *)pos;
2fb51c35 2416 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
fb28ec0c
AN		 2417 chandef->center_freq1);
2418 if (chandef->center_freq2)
2fb51c35 2419 vht_oper->center_freq_seg1_idx =
fb28ec0c 2420 ieee80211_frequency_to_channel(chandef->center_freq2);
f020ae40 2421 else
2fb51c35 2422 vht_oper->center_freq_seg1_idx = 0x00;
fb28ec0c
AN		 2423
2424 switch (chandef->width) {
2425 case NL80211_CHAN_WIDTH_160:
23665aaf
JM		 2426 /*
2427 * Convert 160 MHz channel width to new style as interop
2428 * workaround.
2429 */
2430 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2fb51c35 2431 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
23665aaf 2432 if (chandef->chan->center_freq < chandef->center_freq1)
2fb51c35 2433 vht_oper->center_freq_seg0_idx -= 8;
23665aaf 2434 else
2fb51c35 2435 vht_oper->center_freq_seg0_idx += 8;
fb28ec0c
AN		 2436 break;
2437 case NL80211_CHAN_WIDTH_80P80:
23665aaf
JM		 2438 /*
2439 * Convert 80+80 MHz channel width to new style as interop
2440 * workaround.
2441 */
2442 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
fb28ec0c
AN		 2443 break;
2444 case NL80211_CHAN_WIDTH_80:
2445 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2446 break;
2447 default:
2448 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2449 break;
2450 }
2451
2452 /* don't require special VHT peer rates */
2453 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2454
2455 return pos + sizeof(struct ieee80211_vht_operation);
2456}
2457
8ac3c704
JB		 2458bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2459 struct cfg80211_chan_def *chandef)
42e7aa77
AS		 2460{
2461 enum nl80211_channel_type channel_type;
2462
8ac3c704
JB		 2463 if (!ht_oper)
2464 return false;
42e7aa77 2465
074d46d1 2466 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
42e7aa77
AS		 2467 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2468 channel_type = NL80211_CHAN_HT20;
2469 break;
2470 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2471 channel_type = NL80211_CHAN_HT40PLUS;
2472 break;
2473 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2474 channel_type = NL80211_CHAN_HT40MINUS;
2475 break;
2476 default:
2477 channel_type = NL80211_CHAN_NO_HT;
8ac3c704 2478 return false;
42e7aa77
AS		 2479 }
2480
8ac3c704
JB		 2481 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
2482 return true;
42e7aa77
AS		 2483}
2484
8ac3c704
JB		 2485bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2486 struct cfg80211_chan_def *chandef)
abcff6ef 2487{
8ac3c704
JB		 2488 struct cfg80211_chan_def new = *chandef;
2489 int cf1, cf2;
2490
abcff6ef 2491 if (!oper)
8ac3c704 2492 return false;
abcff6ef 2493
2fb51c35 2494 cf1 = ieee80211_channel_to_frequency(oper->center_freq_seg0_idx,
8ac3c704 2495 chandef->chan->band);
2fb51c35 2496 cf2 = ieee80211_channel_to_frequency(oper->center_freq_seg1_idx,
8ac3c704 2497 chandef->chan->band);
abcff6ef
JD		 2498
2499 switch (oper->chan_width) {
2500 case IEEE80211_VHT_CHANWIDTH_USE_HT:
2501 break;
2502 case IEEE80211_VHT_CHANWIDTH_80MHZ:
8ac3c704
JB		 2503 new.width = NL80211_CHAN_WIDTH_80;
2504 new.center_freq1 = cf1;
23665aaf 2505 /* If needed, adjust based on the newer interop workaround. */
2fb51c35 2506 if (oper->center_freq_seg1_idx) {
23665aaf
JM		 2507 unsigned int diff;
2508
2fb51c35
JB		 2509 diff = abs(oper->center_freq_seg1_idx -
2510 oper->center_freq_seg0_idx);
23665aaf
JM		 2511 if (diff == 8) {
2512 new.width = NL80211_CHAN_WIDTH_160;
2513 new.center_freq1 = cf2;
2514 } else if (diff > 8) {
2515 new.width = NL80211_CHAN_WIDTH_80P80;
2516 new.center_freq2 = cf2;
2517 }
2518 }
abcff6ef
JD		 2519 break;
2520 case IEEE80211_VHT_CHANWIDTH_160MHZ:
8ac3c704
JB		 2521 new.width = NL80211_CHAN_WIDTH_160;
2522 new.center_freq1 = cf1;
abcff6ef
JD		 2523 break;
2524 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
8ac3c704
JB		 2525 new.width = NL80211_CHAN_WIDTH_80P80;
2526 new.center_freq1 = cf1;
2527 new.center_freq2 = cf2;
abcff6ef
JD		 2528 break;
2529 default:
8ac3c704 2530 return false;
abcff6ef
JD		 2531 }
2532
8ac3c704
JB		 2533 if (!cfg80211_chandef_valid(&new))
2534 return false;
2535
2536 *chandef = new;
2537 return true;
abcff6ef
JD		 2538}
2539
2103dec1
SW		 2540int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2541 const struct ieee80211_supported_band *sband,
2542 const u8 *srates, int srates_len, u32 *rates)
2543{
2544 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
2545 int shift = ieee80211_chandef_get_shift(chandef);
2546 struct ieee80211_rate *br;
2547 int brate, rate, i, j, count = 0;
2548
2549 *rates = 0;
2550
2551 for (i = 0; i < srates_len; i++) {
2552 rate = srates[i] & 0x7f;
2553
2554 for (j = 0; j < sband->n_bitrates; j++) {
2555 br = &sband->bitrates[j];
2556 if ((rate_flags & br->flags) != rate_flags)
2557 continue;
2558
2559 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2560 if (brate == rate) {
2561 *rates |= BIT(j);
2562 count++;
2563 break;
2564 }
2565 }
2566 }
2567 return count;
2568}
2569
fc8a7321 2570int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 2571 struct sk_buff *skb, bool need_basic,
57fbcce3 2572 enum nl80211_band band)
768db343 2573{
768db343
AN		 2574 struct ieee80211_local *local = sdata->local;
2575 struct ieee80211_supported_band *sband;
2103dec1 2576 int rate, shift;
768db343 2577 u8 i, rates, *pos;
fc8a7321 2578 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1 2579 u32 rate_flags;
768db343 2580
2103dec1
SW		 2581 shift = ieee80211_vif_get_shift(&sdata->vif);
2582 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
6b77863b 2583 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2584 rates = 0;
2585 for (i = 0; i < sband->n_bitrates; i++) {
2586 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2587 continue;
2588 rates++;
2589 }
768db343
AN		 2590 if (rates > 8)
2591 rates = 8;
2592
2593 if (skb_tailroom(skb) < rates + 2)
2594 return -ENOMEM;
2595
2596 pos = skb_put(skb, rates + 2);
2597 *pos++ = WLAN_EID_SUPP_RATES;
2598 *pos++ = rates;
2599 for (i = 0; i < rates; i++) {
657c3e0c 2600 u8 basic = 0;
2103dec1
SW		 2601 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2602 continue;
2603
657c3e0c
AN		 2604 if (need_basic && basic_rates & BIT(i))
2605 basic = 0x80;
2103dec1
SW		 2606 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2607 5 * (1 << shift));
2608 *pos++ = basic | (u8) rate;
768db343
AN		 2609 }
2610
2611 return 0;
2612}
2613
fc8a7321 2614int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 2615 struct sk_buff *skb, bool need_basic,
57fbcce3 2616 enum nl80211_band band)
768db343 2617{
768db343
AN		 2618 struct ieee80211_local *local = sdata->local;
2619 struct ieee80211_supported_band *sband;
cc63ec76 2620 int rate, shift;
768db343 2621 u8 i, exrates, *pos;
fc8a7321 2622 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1
SW		 2623 u32 rate_flags;
2624
2625 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2626 shift = ieee80211_vif_get_shift(&sdata->vif);
768db343 2627
6b77863b 2628 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2629 exrates = 0;
2630 for (i = 0; i < sband->n_bitrates; i++) {
2631 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2632 continue;
2633 exrates++;
2634 }
2635
768db343
AN		 2636 if (exrates > 8)
2637 exrates -= 8;
2638 else
2639 exrates = 0;
2640
2641 if (skb_tailroom(skb) < exrates + 2)
2642 return -ENOMEM;
2643
2644 if (exrates) {
2645 pos = skb_put(skb, exrates + 2);
2646 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2647 *pos++ = exrates;
2648 for (i = 8; i < sband->n_bitrates; i++) {
657c3e0c 2649 u8 basic = 0;
2103dec1
SW		 2650 if ((rate_flags & sband->bitrates[i].flags)
2651 != rate_flags)
2652 continue;
657c3e0c
AN		 2653 if (need_basic && basic_rates & BIT(i))
2654 basic = 0x80;
2103dec1
SW		 2655 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2656 5 * (1 << shift));
2657 *pos++ = basic | (u8) rate;
768db343
AN		 2658 }
2659 }
2660 return 0;
2661}
1dae27f8
WYG		 2662
2663int ieee80211_ave_rssi(struct ieee80211_vif *vif)
2664{
2665 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2666 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2667
be6bcabc
WYG		 2668 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
2669 /* non-managed type inferfaces */
2670 return 0;
2671 }
338c17ae 2672 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
1dae27f8 2673}
0d8a0a17 2674EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
04ecd257
JB		 2675
2676u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
2677{
2678 if (!mcs)
2679 return 1;
2680
2681 /* TODO: consider rx_highest */
2682
2683 if (mcs->rx_mask[3])
2684 return 4;
2685 if (mcs->rx_mask[2])
2686 return 3;
2687 if (mcs->rx_mask[1])
2688 return 2;
2689 return 1;
2690}
f4bda337
TP		 2691
2692/**
2693 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
2694 * @local: mac80211 hw info struct
2695 * @status: RX status
2696 * @mpdu_len: total MPDU length (including FCS)
2697 * @mpdu_offset: offset into MPDU to calculate timestamp at
2698 *
2699 * This function calculates the RX timestamp at the given MPDU offset, taking
2700 * into account what the RX timestamp was. An offset of 0 will just normalize
2701 * the timestamp to TSF at beginning of MPDU reception.
2702 */
2703u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
2704 struct ieee80211_rx_status *status,
2705 unsigned int mpdu_len,
2706 unsigned int mpdu_offset)
2707{
2708 u64 ts = status->mactime;
2709 struct rate_info ri;
2710 u16 rate;
2711
2712 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
2713 return 0;
2714
2715 memset(&ri, 0, sizeof(ri));
2716
2717 /* Fill cfg80211 rate info */
da6a4352
JB		 2718 switch (status->encoding) {
2719 case RX_ENC_HT:
f4bda337
TP		 2720 ri.mcs = status->rate_idx;
2721 ri.flags |= RATE_INFO_FLAGS_MCS;
da6a4352 2722 ri.bw = status->bw;
7fdd69c5 2723 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
f4bda337 2724 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da6a4352
JB		 2725 break;
2726 case RX_ENC_VHT:
5614618e
JB		 2727 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
2728 ri.mcs = status->rate_idx;
8613c948 2729 ri.nss = status->nss;
da6a4352 2730 ri.bw = status->bw;
7fdd69c5 2731 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
5614618e 2732 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da6a4352
JB		 2733 break;
2734 default:
2735 WARN_ON(1);
2736 /* fall through */
2737 case RX_ENC_LEGACY: {
f4bda337 2738 struct ieee80211_supported_band *sband;
2103dec1
SW		 2739 int shift = 0;
2740 int bitrate;
2741
da6a4352
JB		 2742 ri.bw = status->bw;
2743
2744 switch (status->bw) {
2745 case RATE_INFO_BW_10:
2103dec1 2746 shift = 1;
da6a4352
JB		 2747 break;
2748 case RATE_INFO_BW_5:
2103dec1 2749 shift = 2;
da6a4352 2750 break;
b51f3bee 2751 }
f4bda337
TP		 2752
2753 sband = local->hw.wiphy->bands[status->band];
2103dec1
SW		 2754 bitrate = sband->bitrates[status->rate_idx].bitrate;
2755 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
f4a0f0c5
JB		 2756
2757 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
2758 /* TODO: handle HT/VHT preambles */
57fbcce3 2759 if (status->band == NL80211_BAND_5GHZ) {
f4a0f0c5
JB		 2760 ts += 20 << shift;
2761 mpdu_offset += 2;
7fdd69c5 2762 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
f4a0f0c5
JB		 2763 ts += 96;
2764 } else {
2765 ts += 192;
2766 }
2767 }
da6a4352
JB		 2768 break;
2769 }
f4bda337
TP		 2770 }
2771
2772 rate = cfg80211_calculate_bitrate(&ri);
d86aa4f8 2773 if (WARN_ONCE(!rate,
f980ebc0
SS		 2774 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
2775 (unsigned long long)status->flag, status->rate_idx,
8613c948 2776 status->nss))
d86aa4f8 2777 return 0;
f4bda337
TP		 2778
2779 /* rewind from end of MPDU */
2780 if (status->flag & RX_FLAG_MACTIME_END)
2781 ts -= mpdu_len * 8 * 10 / rate;
2782
2783 ts += mpdu_offset * 8 * 10 / rate;
2784
2785 return ts;
2786}
164eb02d
SW		 2787
2788void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
2789{
2790 struct ieee80211_sub_if_data *sdata;
d2859df5 2791 struct cfg80211_chan_def chandef;
164eb02d 2792
4a199068
JB		 2793 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
2794 ASSERT_RTNL();
2795
34a3740d 2796 mutex_lock(&local->mtx);
164eb02d 2797 list_for_each_entry(sdata, &local->interfaces, list) {
34a3740d
JB		 2798 /* it might be waiting for the local->mtx, but then
2799 * by the time it gets it, sdata->wdev.cac_started
2800 * will no longer be true
2801 */
2802 cancel_delayed_work(&sdata->dfs_cac_timer_work);
164eb02d
SW		 2803
2804 if (sdata->wdev.cac_started) {
d2859df5 2805 chandef = sdata->vif.bss_conf.chandef;
164eb02d
SW		 2806 ieee80211_vif_release_channel(sdata);
2807 cfg80211_cac_event(sdata->dev,
d2859df5 2808 &chandef,
164eb02d
SW		 2809 NL80211_RADAR_CAC_ABORTED,
2810 GFP_KERNEL);
2811 }
2812 }
34a3740d 2813 mutex_unlock(&local->mtx);
164eb02d
SW		 2814}
2815
2816void ieee80211_dfs_radar_detected_work(struct work_struct *work)
2817{
2818 struct ieee80211_local *local =
2819 container_of(work, struct ieee80211_local, radar_detected_work);
84a3d1c9 2820 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
486cf4c0
MK		 2821 struct ieee80211_chanctx *ctx;
2822 int num_chanctx = 0;
2823
2824 mutex_lock(&local->chanctx_mtx);
2825 list_for_each_entry(ctx, &local->chanctx_list, list) {
2826 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
2827 continue;
2828
2829 num_chanctx++;
2830 chandef = ctx->conf.def;
2831 }
2832 mutex_unlock(&local->chanctx_mtx);
164eb02d 2833
4a199068 2834 rtnl_lock();
164eb02d 2835 ieee80211_dfs_cac_cancel(local);
4a199068 2836 rtnl_unlock();
164eb02d 2837
486cf4c0
MK		 2838 if (num_chanctx > 1)
2839 /* XXX: multi-channel is not supported yet */
164eb02d 2840 WARN_ON(1);
84a3d1c9 2841 else
164eb02d 2842 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
164eb02d
SW		 2843}
2844
2845void ieee80211_radar_detected(struct ieee80211_hw *hw)
2846{
2847 struct ieee80211_local *local = hw_to_local(hw);
2848
2849 trace_api_radar_detected(local);
2850
4a199068 2851 schedule_work(&local->radar_detected_work);
164eb02d
SW		 2852}
2853EXPORT_SYMBOL(ieee80211_radar_detected);
e6b7cde4
SW		 2854
2855u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
2856{
2857 u32 ret;
2858 int tmp;
2859
2860 switch (c->width) {
2861 case NL80211_CHAN_WIDTH_20:
2862 c->width = NL80211_CHAN_WIDTH_20_NOHT;
2863 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2864 break;
2865 case NL80211_CHAN_WIDTH_40:
2866 c->width = NL80211_CHAN_WIDTH_20;
2867 c->center_freq1 = c->chan->center_freq;
2868 ret = IEEE80211_STA_DISABLE_40MHZ |
2869 IEEE80211_STA_DISABLE_VHT;
2870 break;
2871 case NL80211_CHAN_WIDTH_80:
2872 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
2873 /* n_P40 */
2874 tmp /= 2;
2875 /* freq_P40 */
2876 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
2877 c->width = NL80211_CHAN_WIDTH_40;
2878 ret = IEEE80211_STA_DISABLE_VHT;
2879 break;
2880 case NL80211_CHAN_WIDTH_80P80:
2881 c->center_freq2 = 0;
2882 c->width = NL80211_CHAN_WIDTH_80;
2883 ret = IEEE80211_STA_DISABLE_80P80MHZ |
2884 IEEE80211_STA_DISABLE_160MHZ;
2885 break;
2886 case NL80211_CHAN_WIDTH_160:
2887 /* n_P20 */
2888 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
2889 /* n_P80 */
2890 tmp /= 4;
2891 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
2892 c->width = NL80211_CHAN_WIDTH_80;
2893 ret = IEEE80211_STA_DISABLE_80P80MHZ |
2894 IEEE80211_STA_DISABLE_160MHZ;
2895 break;
2896 default:
2897 case NL80211_CHAN_WIDTH_20_NOHT:
2898 WARN_ON_ONCE(1);
2899 c->width = NL80211_CHAN_WIDTH_20_NOHT;
2900 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2901 break;
2902 case NL80211_CHAN_WIDTH_5:
2903 case NL80211_CHAN_WIDTH_10:
2904 WARN_ON_ONCE(1);
2905 /* keep c->width */
2906 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2907 break;
2908 }
2909
2910 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
2911
2912 return ret;
2913}
687da132
EG		 2914
2915/*
2916 * Returns true if smps_mode_new is strictly more restrictive than
2917 * smps_mode_old.
2918 */
2919bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2920 enum ieee80211_smps_mode smps_mode_new)
2921{
2922 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
2923 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
2924 return false;
2925
2926 switch (smps_mode_old) {
2927 case IEEE80211_SMPS_STATIC:
2928 return false;
2929 case IEEE80211_SMPS_DYNAMIC:
2930 return smps_mode_new == IEEE80211_SMPS_STATIC;
2931 case IEEE80211_SMPS_OFF:
2932 return smps_mode_new != IEEE80211_SMPS_OFF;
2933 default:
2934 WARN_ON(1);
2935 }
2936
2937 return false;
2938}
c6da674a
CYY		 2939
2940int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2941 struct cfg80211_csa_settings *csa_settings)
2942{
2943 struct sk_buff *skb;
2944 struct ieee80211_mgmt *mgmt;
2945 struct ieee80211_local *local = sdata->local;
2946 int freq;
2947 int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) +
2948 sizeof(mgmt->u.action.u.chan_switch);
2949 u8 *pos;
2950
2951 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2952 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2953 return -EOPNOTSUPP;
2954
2955 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
2956 5 + /* channel switch announcement element */
2957 3 + /* secondary channel offset element */
2958 8); /* mesh channel switch parameters element */
2959 if (!skb)
2960 return -ENOMEM;
2961
2962 skb_reserve(skb, local->tx_headroom);
2963 mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len);
2964 memset(mgmt, 0, hdr_len);
2965 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2966 IEEE80211_STYPE_ACTION);
2967
2968 eth_broadcast_addr(mgmt->da);
2969 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2970 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2971 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
2972 } else {
2973 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2974 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
2975 }
2976 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
2977 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
2978 pos = skb_put(skb, 5);
2979 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
2980 *pos++ = 3; /* IE length */
2981 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
2982 freq = csa_settings->chandef.chan->center_freq;
2983 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
2984 *pos++ = csa_settings->count; /* count */
2985
2986 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
2987 enum nl80211_channel_type ch_type;
2988
2989 skb_put(skb, 3);
2990 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
2991 *pos++ = 1; /* IE length */
2992 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
2993 if (ch_type == NL80211_CHAN_HT40PLUS)
2994 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2995 else
2996 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2997 }
2998
2999 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3000 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
c6da674a
CYY		 3001
3002 skb_put(skb, 8);
3003 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3004 *pos++ = 6; /* IE length */
3005 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3006 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3007 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3008 *pos++ |= csa_settings->block_tx ?
3009 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3010 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3011 pos += 2;
ca91dc97 3012 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
c6da674a 3013 pos += 2;
c6da674a
CYY		 3014 }
3015
3016 ieee80211_tx_skb(sdata, skb);
3017 return 0;
3018}
2475b1cc
MS		 3019
3020bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3021{
3022 return !(cs == NULL || cs->cipher == 0 ||
3023 cs->hdr_len < cs->pn_len + cs->pn_off ||
3024 cs->hdr_len <= cs->key_idx_off ||
3025 cs->key_idx_shift > 7 ||
3026 cs->key_idx_mask == 0);
3027}
3028
3029bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
3030{
3031 int i;
3032
3033 /* Ensure we have enough iftype bitmap space for all iftype values */
3034 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
3035
3036 for (i = 0; i < n; i++)
3037 if (!ieee80211_cs_valid(&cs[i]))
3038 return false;
3039
3040 return true;
3041}
3042
3043const struct ieee80211_cipher_scheme *
3044ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
3045 enum nl80211_iftype iftype)
3046{
3047 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
3048 int n = local->hw.n_cipher_schemes;
3049 int i;
3050 const struct ieee80211_cipher_scheme *cs = NULL;
3051
3052 for (i = 0; i < n; i++) {
3053 if (l[i].cipher == cipher) {
3054 cs = &l[i];
3055 break;
3056 }
3057 }
3058
3059 if (!cs || !(cs->iftype & BIT(iftype)))
3060 return NULL;
3061
3062 return cs;
3063}
3064
3065int ieee80211_cs_headroom(struct ieee80211_local *local,
3066 struct cfg80211_crypto_settings *crypto,
3067 enum nl80211_iftype iftype)
3068{
3069 const struct ieee80211_cipher_scheme *cs;
3070 int headroom = IEEE80211_ENCRYPT_HEADROOM;
3071 int i;
3072
3073 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
3074 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
3075 iftype);
3076
3077 if (cs && headroom < cs->hdr_len)
3078 headroom = cs->hdr_len;
3079 }
3080
3081 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
3082 if (cs && headroom < cs->hdr_len)
3083 headroom = cs->hdr_len;
3084
3085 return headroom;
3086}
a7022e65
FF		 3087
3088static bool
3089ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3090{
3091 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3092 int skip;
3093
3094 if (end > 0)
3095 return false;
3096
519ee691
JD		 3097 /* One shot NOA */
3098 if (data->count[i] == 1)
3099 return false;
3100
3101 if (data->desc[i].interval == 0)
3102 return false;
3103
a7022e65
FF		 3104 /* End time is in the past, check for repetitions */
3105 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3106 if (data->count[i] < 255) {
3107 if (data->count[i] <= skip) {
3108 data->count[i] = 0;
3109 return false;
3110 }
3111
3112 data->count[i] -= skip;
3113 }
3114
3115 data->desc[i].start += skip * data->desc[i].interval;
3116
3117 return true;
3118}
3119
3120static bool
3121ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3122 s32 *offset)
3123{
3124 bool ret = false;
3125 int i;
3126
3127 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3128 s32 cur;
3129
3130 if (!data->count[i])
3131 continue;
3132
3133 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3134 ret = true;
3135
3136 cur = data->desc[i].start - tsf;
3137 if (cur > *offset)
3138 continue;
3139
3140 cur = data->desc[i].start + data->desc[i].duration - tsf;
3141 if (cur > *offset)
3142 *offset = cur;
3143 }
3144
3145 return ret;
3146}
3147
3148static u32
3149ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3150{
3151 s32 offset = 0;
3152 int tries = 0;
3153 /*
3154 * arbitrary limit, used to avoid infinite loops when combined NoA
3155 * descriptors cover the full time period.
3156 */
3157 int max_tries = 5;
3158
3159 ieee80211_extend_absent_time(data, tsf, &offset);
3160 do {
3161 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3162 break;
3163
3164 tries++;
3165 } while (tries < max_tries);
3166
3167 return offset;
3168}
3169
3170void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3171{
3172 u32 next_offset = BIT(31) - 1;
3173 int i;
3174
3175 data->absent = 0;
3176 data->has_next_tsf = false;
3177 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3178 s32 start;
3179
3180 if (!data->count[i])
3181 continue;
3182
3183 ieee80211_extend_noa_desc(data, tsf, i);
3184 start = data->desc[i].start - tsf;
3185 if (start <= 0)
3186 data->absent |= BIT(i);
3187
3188 if (next_offset > start)
3189 next_offset = start;
3190
3191 data->has_next_tsf = true;
3192 }
3193
3194 if (data->absent)
3195 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3196
3197 data->next_tsf = tsf + next_offset;
3198}
3199EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3200
3201int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3202 struct ieee80211_noa_data *data, u32 tsf)
3203{
3204 int ret = 0;
3205 int i;
3206
3207 memset(data, 0, sizeof(*data));
3208
3209 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3210 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3211
3212 if (!desc->count || !desc->duration)
3213 continue;
3214
3215 data->count[i] = desc->count;
3216 data->desc[i].start = le32_to_cpu(desc->start_time);
3217 data->desc[i].duration = le32_to_cpu(desc->duration);
3218 data->desc[i].interval = le32_to_cpu(desc->interval);
3219
3220 if (data->count[i] > 1 &&
3221 data->desc[i].interval < data->desc[i].duration)
3222 continue;
3223
3224 ieee80211_extend_noa_desc(data, tsf, i);
3225 ret++;
3226 }
3227
3228 if (ret)
3229 ieee80211_update_p2p_noa(data, tsf);
3230
3231 return ret;
3232}
3233EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
057d5f4b
TP		 3234
3235void ieee80211_recalc_dtim(struct ieee80211_local *local,
3236 struct ieee80211_sub_if_data *sdata)
3237{
3238 u64 tsf = drv_get_tsf(local, sdata);
3239 u64 dtim_count = 0;
3240 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3241 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3242 struct ps_data *ps;
3243 u8 bcns_from_dtim;
3244
3245 if (tsf == -1ULL || !beacon_int || !dtim_period)
3246 return;
3247
3248 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3249 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3250 if (!sdata->bss)
3251 return;
3252
3253 ps = &sdata->bss->ps;
3254 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3255 ps = &sdata->u.mesh.ps;
3256 } else {
3257 return;
3258 }
3259
3260 /*
3261 * actually finds last dtim_count, mac80211 will update in
3262 * __beacon_add_tim().
3263 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3264 */
3265 do_div(tsf, beacon_int);
3266 bcns_from_dtim = do_div(tsf, dtim_period);
3267 /* just had a DTIM */
3268 if (!bcns_from_dtim)
3269 dtim_count = 0;
3270 else
3271 dtim_count = dtim_period - bcns_from_dtim;
3272
3273 ps->dtim_count = dtim_count;
3274}
73de86a3 3275
71e6195e
MK		 3276static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3277 struct ieee80211_chanctx *ctx)
3278{
3279 struct ieee80211_sub_if_data *sdata;
3280 u8 radar_detect = 0;
3281
3282 lockdep_assert_held(&local->chanctx_mtx);
3283
3284 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3285 return 0;
3286
3287 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
3288 if (sdata->reserved_radar_required)
3289 radar_detect |= BIT(sdata->reserved_chandef.width);
3290
3291 /*
3292 * An in-place reservation context should not have any assigned vifs
3293 * until it replaces the other context.
3294 */
3295 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
3296 !list_empty(&ctx->assigned_vifs));
3297
3298 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
3299 if (sdata->radar_required)
3300 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
3301
3302 return radar_detect;
3303}
3304
73de86a3
LC		 3305int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
3306 const struct cfg80211_chan_def *chandef,
3307 enum ieee80211_chanctx_mode chanmode,
3308 u8 radar_detect)
3309{
3310 struct ieee80211_local *local = sdata->local;
3311 struct ieee80211_sub_if_data *sdata_iter;
3312 enum nl80211_iftype iftype = sdata->wdev.iftype;
73de86a3 3313 struct ieee80211_chanctx *ctx;
73de86a3 3314 int total = 1;
e227300c
PK		 3315 struct iface_combination_params params = {
3316 .radar_detect = radar_detect,
3317 };
73de86a3
LC		 3318
3319 lockdep_assert_held(&local->chanctx_mtx);
3320
3321 if (WARN_ON(hweight32(radar_detect) > 1))
3322 return -EINVAL;
3323
b6a55015
LC		 3324 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
3325 !chandef->chan))
73de86a3
LC		 3326 return -EINVAL;
3327
3328 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
3329 return -EINVAL;
3330
ac668afe
JB		 3331 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3332 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
3333 /*
3334 * always passing this is harmless, since it'll be the
3335 * same value that cfg80211 finds if it finds the same
3336 * interface ... and that's always allowed
3337 */
3338 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
3339 }
3340
73de86a3
LC		 3341 /* Always allow software iftypes */
3342 if (local->hw.wiphy->software_iftypes & BIT(iftype)) {
3343 if (radar_detect)
3344 return -EINVAL;
3345 return 0;
3346 }
3347
e227300c
PK		 3348 if (chandef)
3349 params.num_different_channels = 1;
73de86a3
LC		 3350
3351 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
e227300c 3352 params.iftype_num[iftype] = 1;
73de86a3
LC		 3353
3354 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3355 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3356 continue;
e227300c
PK		 3357 params.radar_detect |=
3358 ieee80211_chanctx_radar_detect(local, ctx);
73de86a3 3359 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
e227300c 3360 params.num_different_channels++;
73de86a3
LC		 3361 continue;
3362 }
b6a55015 3363 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
73de86a3
LC		 3364 cfg80211_chandef_compatible(chandef,
3365 &ctx->conf.def))
3366 continue;
e227300c 3367 params.num_different_channels++;
73de86a3
LC		 3368 }
3369
3370 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
3371 struct wireless_dev *wdev_iter;
3372
3373 wdev_iter = &sdata_iter->wdev;
3374
3375 if (sdata_iter == sdata ||
0f611d28 3376 !ieee80211_sdata_running(sdata_iter) ||
73de86a3
LC		 3377 local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
3378 continue;
3379
e227300c 3380 params.iftype_num[wdev_iter->iftype]++;
73de86a3
LC		 3381 total++;
3382 }
3383
e227300c 3384 if (total == 1 && !params.radar_detect)
73de86a3
LC		 3385 return 0;
3386
e227300c 3387 return cfg80211_check_combinations(local->hw.wiphy, &params);
73de86a3 3388}
6fa001bc
MK		 3389
3390static void
3391ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
3392 void *data)
3393{
3394 u32 *max_num_different_channels = data;
3395
3396 *max_num_different_channels = max(*max_num_different_channels,
3397 c->num_different_channels);
3398}
3399
3400int ieee80211_max_num_channels(struct ieee80211_local *local)
3401{
3402 struct ieee80211_sub_if_data *sdata;
6fa001bc 3403 struct ieee80211_chanctx *ctx;
6fa001bc
MK		 3404 u32 max_num_different_channels = 1;
3405 int err;
e227300c 3406 struct iface_combination_params params = {0};
6fa001bc
MK		 3407
3408 lockdep_assert_held(&local->chanctx_mtx);
3409
3410 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3411 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3412 continue;
3413
e227300c 3414 params.num_different_channels++;
6fa001bc 3415
e227300c
PK		 3416 params.radar_detect |=
3417 ieee80211_chanctx_radar_detect(local, ctx);
6fa001bc
MK		 3418 }
3419
3420 list_for_each_entry_rcu(sdata, &local->interfaces, list)
e227300c 3421 params.iftype_num[sdata->wdev.iftype]++;
6fa001bc 3422
e227300c
PK		 3423 err = cfg80211_iter_combinations(local->hw.wiphy, &params,
3424 ieee80211_iter_max_chans,
6fa001bc
MK		 3425 &max_num_different_channels);
3426 if (err < 0)
3427 return err;
3428
3429 return max_num_different_channels;
3430}
40b861a0
AN		 3431
3432u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
3433{
3434 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
3435 *buf++ = 7; /* len */
3436 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
3437 *buf++ = 0x50;
3438 *buf++ = 0xf2;
3439 *buf++ = 2; /* WME */
3440 *buf++ = 0; /* WME info */
3441 *buf++ = 1; /* WME ver */
3442 *buf++ = qosinfo; /* U-APSD no in use */
3443
3444 return buf;
3445}
ba8c3d6f 3446
f2ac7e30
MK		 3447void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
3448 unsigned long *frame_cnt,
3449 unsigned long *byte_cnt)
3450{
3451 struct txq_info *txqi = to_txq_info(txq);
bb42f2d1
THJ		 3452 u32 frag_cnt = 0, frag_bytes = 0;
3453 struct sk_buff *skb;
3454
3455 skb_queue_walk(&txqi->frags, skb) {
3456 frag_cnt++;
3457 frag_bytes += skb->len;
3458 }
f2ac7e30
MK		 3459
3460 if (frame_cnt)
bb42f2d1 3461 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
f2ac7e30
MK		 3462
3463 if (byte_cnt)
bb42f2d1 3464 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
f2ac7e30
MK		 3465}
3466EXPORT_SYMBOL(ieee80211_txq_get_depth);
f438ceb8
EG		 3467
3468const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
3469 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
3470 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
3471 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
3472 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
3473};
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