Commit | Line | Data |
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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 |
c2d1560a JB |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * utilities for mac80211 | |
13 | */ | |
14 | ||
15 | #include <net/mac80211.h> | |
16 | #include <linux/netdevice.h> | |
bc3b2d7f | 17 | #include <linux/export.h> |
c2d1560a JB |
18 | #include <linux/types.h> |
19 | #include <linux/slab.h> | |
20 | #include <linux/skbuff.h> | |
21 | #include <linux/etherdevice.h> | |
22 | #include <linux/if_arp.h> | |
c2d1560a | 23 | #include <linux/bitmap.h> |
dd76986b | 24 | #include <linux/crc32.h> |
881d966b | 25 | #include <net/net_namespace.h> |
c2d1560a | 26 | #include <net/cfg80211.h> |
dabeb344 | 27 | #include <net/rtnetlink.h> |
c2d1560a JB |
28 | |
29 | #include "ieee80211_i.h" | |
24487981 | 30 | #include "driver-ops.h" |
2c8dccc7 | 31 | #include "rate.h" |
ee385855 | 32 | #include "mesh.h" |
c2d1560a | 33 | #include "wme.h" |
f2753ddb | 34 | #include "led.h" |
fffd0934 | 35 | #include "wep.h" |
c2d1560a JB |
36 | |
37 | /* privid for wiphys to determine whether they belong to us or not */ | |
8a47cea7 | 38 | const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; |
c2d1560a | 39 | |
9a95371a LR |
40 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
41 | { | |
42 | struct ieee80211_local *local; | |
43 | BUG_ON(!wiphy); | |
44 | ||
45 | local = wiphy_priv(wiphy); | |
46 | return &local->hw; | |
47 | } | |
48 | EXPORT_SYMBOL(wiphy_to_ieee80211_hw); | |
c2d1560a | 49 | |
5cf121c3 | 50 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
c2d1560a | 51 | { |
252b86c4 | 52 | struct sk_buff *skb; |
2de8e0d9 JB |
53 | struct ieee80211_hdr *hdr; |
54 | ||
252b86c4 | 55 | skb_queue_walk(&tx->skbs, skb) { |
2de8e0d9 JB |
56 | hdr = (struct ieee80211_hdr *) skb->data; |
57 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
252b86c4 | 58 | } |
c2d1560a JB |
59 | } |
60 | ||
4ee73f33 | 61 | int ieee80211_frame_duration(enum ieee80211_band band, size_t len, |
438b61b7 SW |
62 | int rate, int erp, int short_preamble, |
63 | int shift) | |
c2d1560a JB |
64 | { |
65 | int dur; | |
66 | ||
67 | /* calculate duration (in microseconds, rounded up to next higher | |
68 | * integer if it includes a fractional microsecond) to send frame of | |
69 | * len bytes (does not include FCS) at the given rate. Duration will | |
70 | * also include SIFS. | |
71 | * | |
72 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
73 | * DIV_ROUND_UP() operations. | |
438b61b7 SW |
74 | * |
75 | * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and | |
76 | * is assumed to be 0 otherwise. | |
c2d1560a JB |
77 | */ |
78 | ||
4ee73f33 | 79 | if (band == IEEE80211_BAND_5GHZ || erp) { |
c2d1560a JB |
80 | /* |
81 | * OFDM: | |
82 | * | |
83 | * N_DBPS = DATARATE x 4 | |
84 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
85 | * (16 = SIGNAL time, 6 = tail bits) | |
86 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
87 | * | |
88 | * T_SYM = 4 usec | |
438b61b7 | 89 | * 802.11a - 18.5.2: aSIFSTime = 16 usec |
c2d1560a JB |
90 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
91 | * signal ext = 6 usec | |
92 | */ | |
c2d1560a | 93 | dur = 16; /* SIFS + signal ext */ |
438b61b7 SW |
94 | dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ |
95 | dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ | |
438b61b7 SW |
96 | |
97 | /* IEEE 802.11-2012 18.3.2.4: all values above are: | |
98 | * * times 4 for 5 MHz | |
99 | * * times 2 for 10 MHz | |
100 | */ | |
101 | dur *= 1 << shift; | |
2103dec1 SW |
102 | |
103 | /* rates should already consider the channel bandwidth, | |
104 | * don't apply divisor again. | |
105 | */ | |
106 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
107 | 4 * rate); /* T_SYM x N_SYM */ | |
c2d1560a JB |
108 | } else { |
109 | /* | |
110 | * 802.11b or 802.11g with 802.11b compatibility: | |
111 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
112 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
113 | * | |
114 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
115 | * aSIFSTime = 10 usec | |
116 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
117 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
118 | */ | |
119 | dur = 10; /* aSIFSTime = 10 usec */ | |
120 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
121 | ||
122 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
123 | } | |
124 | ||
125 | return dur; | |
126 | } | |
127 | ||
128 | /* Exported duration function for driver use */ | |
32bfd35d JB |
129 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
130 | struct ieee80211_vif *vif, | |
4ee73f33 | 131 | enum ieee80211_band band, |
8318d78a JB |
132 | size_t frame_len, |
133 | struct ieee80211_rate *rate) | |
c2d1560a | 134 | { |
25d834e1 | 135 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 136 | u16 dur; |
438b61b7 | 137 | int erp, shift = 0; |
25d834e1 | 138 | bool short_preamble = false; |
c2d1560a | 139 | |
8318d78a | 140 | erp = 0; |
25d834e1 JB |
141 | if (vif) { |
142 | sdata = vif_to_sdata(vif); | |
bda3933a | 143 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
144 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
145 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 146 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 147 | } |
8318d78a | 148 | |
4ee73f33 | 149 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
438b61b7 | 150 | short_preamble, shift); |
c2d1560a JB |
151 | |
152 | return cpu_to_le16(dur); | |
153 | } | |
154 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
155 | ||
32bfd35d JB |
156 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
157 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 158 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
159 | { |
160 | struct ieee80211_local *local = hw_to_local(hw); | |
161 | struct ieee80211_rate *rate; | |
25d834e1 | 162 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 163 | bool short_preamble; |
2103dec1 | 164 | int erp, shift = 0, bitrate; |
c2d1560a | 165 | u16 dur; |
2e92e6f2 JB |
166 | struct ieee80211_supported_band *sband; |
167 | ||
4ee73f33 | 168 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 169 | |
25d834e1 | 170 | short_preamble = false; |
7e9ed188 | 171 | |
e039fa4a | 172 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
173 | |
174 | erp = 0; | |
25d834e1 JB |
175 | if (vif) { |
176 | sdata = vif_to_sdata(vif); | |
bda3933a | 177 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
178 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
179 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 180 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 181 | } |
c2d1560a | 182 | |
2103dec1 SW |
183 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
184 | ||
c2d1560a | 185 | /* CTS duration */ |
2103dec1 | 186 | dur = ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 187 | erp, short_preamble, shift); |
c2d1560a | 188 | /* Data frame duration */ |
2103dec1 | 189 | dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 190 | erp, short_preamble, shift); |
c2d1560a | 191 | /* ACK duration */ |
2103dec1 | 192 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 193 | erp, short_preamble, shift); |
c2d1560a JB |
194 | |
195 | return cpu_to_le16(dur); | |
196 | } | |
197 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
198 | ||
32bfd35d JB |
199 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
200 | struct ieee80211_vif *vif, | |
c2d1560a | 201 | size_t frame_len, |
e039fa4a | 202 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
203 | { |
204 | struct ieee80211_local *local = hw_to_local(hw); | |
205 | struct ieee80211_rate *rate; | |
25d834e1 | 206 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 207 | bool short_preamble; |
2103dec1 | 208 | int erp, shift = 0, bitrate; |
c2d1560a | 209 | u16 dur; |
2e92e6f2 JB |
210 | struct ieee80211_supported_band *sband; |
211 | ||
4ee73f33 | 212 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 213 | |
25d834e1 | 214 | short_preamble = false; |
7e9ed188 | 215 | |
e039fa4a | 216 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 217 | erp = 0; |
25d834e1 JB |
218 | if (vif) { |
219 | sdata = vif_to_sdata(vif); | |
bda3933a | 220 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
221 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
222 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 223 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 224 | } |
c2d1560a | 225 | |
2103dec1 SW |
226 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
227 | ||
c2d1560a | 228 | /* Data frame duration */ |
2103dec1 | 229 | dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 230 | erp, short_preamble, shift); |
e039fa4a | 231 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 232 | /* ACK duration */ |
2103dec1 | 233 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 234 | erp, short_preamble, shift); |
c2d1560a JB |
235 | } |
236 | ||
237 | return cpu_to_le16(dur); | |
238 | } | |
239 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
240 | ||
3a25a8c8 JB |
241 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
242 | { | |
243 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
244 | int n_acs = IEEE80211_NUM_ACS; |
245 | ||
246 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
247 | n_acs = 1; | |
3a25a8c8 JB |
248 | |
249 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
250 | int ac; | |
251 | ||
f142c6b9 JB |
252 | if (!sdata->dev) |
253 | continue; | |
254 | ||
3a25a8c8 JB |
255 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && |
256 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
257 | continue; | |
258 | ||
a6f38ac3 | 259 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
260 | int ac_queue = sdata->vif.hw_queue[ac]; |
261 | ||
ba8c3d6f FF |
262 | if (local->ops->wake_tx_queue && |
263 | (atomic_read(&sdata->txqs_len[ac]) > | |
264 | local->hw.txq_ac_max_pending)) | |
265 | continue; | |
266 | ||
3a25a8c8 JB |
267 | if (ac_queue == queue || |
268 | (sdata->vif.cab_queue == queue && | |
269 | local->queue_stop_reasons[ac_queue] == 0 && | |
270 | skb_queue_empty(&local->pending[ac_queue]))) | |
271 | netif_wake_subqueue(sdata->dev, ac); | |
272 | } | |
273 | } | |
274 | } | |
275 | ||
ce7c9111 | 276 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
277 | enum queue_stop_reason reason, |
278 | bool refcounted) | |
c2d1560a JB |
279 | { |
280 | struct ieee80211_local *local = hw_to_local(hw); | |
281 | ||
b5878a2d JB |
282 | trace_wake_queue(local, queue, reason); |
283 | ||
e4e72fb4 JB |
284 | if (WARN_ON(queue >= hw->queues)) |
285 | return; | |
ce7c9111 | 286 | |
ada15125 JB |
287 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
288 | return; | |
289 | ||
cca07b00 LC |
290 | if (!refcounted) |
291 | local->q_stop_reasons[queue][reason] = 0; | |
292 | else | |
293 | local->q_stop_reasons[queue][reason]--; | |
294 | ||
295 | if (local->q_stop_reasons[queue][reason] == 0) | |
296 | __clear_bit(reason, &local->queue_stop_reasons[queue]); | |
96f5e66e JB |
297 | |
298 | if (local->queue_stop_reasons[queue] != 0) | |
299 | /* someone still has this queue stopped */ | |
300 | return; | |
301 | ||
7236fe29 JB |
302 | if (skb_queue_empty(&local->pending[queue])) { |
303 | rcu_read_lock(); | |
3a25a8c8 | 304 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
305 | rcu_read_unlock(); |
306 | } else | |
3b8d81e0 | 307 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 308 | } |
ce7c9111 | 309 | |
96f5e66e | 310 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
311 | enum queue_stop_reason reason, |
312 | bool refcounted) | |
ce7c9111 KV |
313 | { |
314 | struct ieee80211_local *local = hw_to_local(hw); | |
315 | unsigned long flags; | |
316 | ||
317 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 318 | __ieee80211_wake_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
319 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
320 | } | |
321 | ||
322 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
323 | { | |
324 | ieee80211_wake_queue_by_reason(hw, queue, | |
cca07b00 LC |
325 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
326 | false); | |
ce7c9111 | 327 | } |
c2d1560a JB |
328 | EXPORT_SYMBOL(ieee80211_wake_queue); |
329 | ||
ce7c9111 | 330 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
331 | enum queue_stop_reason reason, |
332 | bool refcounted) | |
c2d1560a JB |
333 | { |
334 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 335 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 336 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 337 | |
b5878a2d JB |
338 | trace_stop_queue(local, queue, reason); |
339 | ||
e4e72fb4 JB |
340 | if (WARN_ON(queue >= hw->queues)) |
341 | return; | |
96f5e66e | 342 | |
cca07b00 LC |
343 | if (!refcounted) |
344 | local->q_stop_reasons[queue][reason] = 1; | |
345 | else | |
346 | local->q_stop_reasons[queue][reason]++; | |
ada15125 | 347 | |
cca07b00 LC |
348 | if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) |
349 | return; | |
cf0277e7 | 350 | |
a6f38ac3 JB |
351 | if (local->hw.queues < IEEE80211_NUM_ACS) |
352 | n_acs = 1; | |
353 | ||
cf0277e7 | 354 | rcu_read_lock(); |
3a25a8c8 JB |
355 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
356 | int ac; | |
357 | ||
f142c6b9 JB |
358 | if (!sdata->dev) |
359 | continue; | |
360 | ||
a6f38ac3 | 361 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
362 | if (sdata->vif.hw_queue[ac] == queue || |
363 | sdata->vif.cab_queue == queue) | |
364 | netif_stop_subqueue(sdata->dev, ac); | |
365 | } | |
366 | } | |
cf0277e7 | 367 | rcu_read_unlock(); |
c2d1560a | 368 | } |
ce7c9111 | 369 | |
96f5e66e | 370 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
371 | enum queue_stop_reason reason, |
372 | bool refcounted) | |
ce7c9111 KV |
373 | { |
374 | struct ieee80211_local *local = hw_to_local(hw); | |
375 | unsigned long flags; | |
376 | ||
377 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 378 | __ieee80211_stop_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
379 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
380 | } | |
381 | ||
382 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
383 | { | |
384 | ieee80211_stop_queue_by_reason(hw, queue, | |
cca07b00 LC |
385 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
386 | false); | |
ce7c9111 | 387 | } |
c2d1560a JB |
388 | EXPORT_SYMBOL(ieee80211_stop_queue); |
389 | ||
8f77f384 JB |
390 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
391 | struct sk_buff *skb) | |
392 | { | |
393 | struct ieee80211_hw *hw = &local->hw; | |
394 | unsigned long flags; | |
a7bc376c | 395 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 396 | int queue = info->hw_queue; |
a7bc376c JB |
397 | |
398 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 399 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
400 | return; |
401 | } | |
8f77f384 JB |
402 | |
403 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 LC |
404 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
405 | false); | |
3b8d81e0 | 406 | __skb_queue_tail(&local->pending[queue], skb); |
cca07b00 LC |
407 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
408 | false); | |
8f77f384 JB |
409 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
410 | } | |
411 | ||
e3685e03 JB |
412 | void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
413 | struct sk_buff_head *skbs) | |
8f77f384 JB |
414 | { |
415 | struct ieee80211_hw *hw = &local->hw; | |
416 | struct sk_buff *skb; | |
417 | unsigned long flags; | |
b0b97a8a | 418 | int queue, i; |
8f77f384 JB |
419 | |
420 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 421 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
422 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
423 | ||
424 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 425 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
426 | continue; |
427 | } | |
428 | ||
3a25a8c8 | 429 | queue = info->hw_queue; |
4644ae89 JB |
430 | |
431 | __ieee80211_stop_queue(hw, queue, | |
cca07b00 LC |
432 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
433 | false); | |
4644ae89 | 434 | |
3b8d81e0 | 435 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
436 | } |
437 | ||
3b8d81e0 | 438 | for (i = 0; i < hw->queues; i++) |
8f77f384 | 439 | __ieee80211_wake_queue(hw, i, |
cca07b00 LC |
440 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
441 | false); | |
8f77f384 | 442 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
443 | } |
444 | ||
ce7c9111 | 445 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 446 | unsigned long queues, |
cca07b00 LC |
447 | enum queue_stop_reason reason, |
448 | bool refcounted) | |
c2d1560a | 449 | { |
ce7c9111 KV |
450 | struct ieee80211_local *local = hw_to_local(hw); |
451 | unsigned long flags; | |
c2d1560a JB |
452 | int i; |
453 | ||
ce7c9111 KV |
454 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
455 | ||
445ea4e8 | 456 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 457 | __ieee80211_stop_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
458 | |
459 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
460 | } | |
461 | ||
462 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
463 | { | |
445ea4e8 | 464 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
465 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
466 | false); | |
c2d1560a JB |
467 | } |
468 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
469 | ||
92ab8535 TW |
470 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
471 | { | |
472 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
473 | unsigned long flags; |
474 | int ret; | |
96f5e66e | 475 | |
e4e72fb4 JB |
476 | if (WARN_ON(queue >= hw->queues)) |
477 | return true; | |
96f5e66e | 478 | |
3b8d81e0 | 479 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
480 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
481 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
482 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
483 | return ret; | |
92ab8535 TW |
484 | } |
485 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
486 | ||
ce7c9111 | 487 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 488 | unsigned long queues, |
cca07b00 LC |
489 | enum queue_stop_reason reason, |
490 | bool refcounted) | |
c2d1560a | 491 | { |
ce7c9111 KV |
492 | struct ieee80211_local *local = hw_to_local(hw); |
493 | unsigned long flags; | |
c2d1560a JB |
494 | int i; |
495 | ||
ce7c9111 KV |
496 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
497 | ||
445ea4e8 | 498 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 499 | __ieee80211_wake_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
500 | |
501 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
502 | } | |
503 | ||
504 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
505 | { | |
445ea4e8 | 506 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
507 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
508 | false); | |
c2d1560a JB |
509 | } |
510 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 511 | |
26da23b6 LC |
512 | static unsigned int |
513 | ieee80211_get_vif_queues(struct ieee80211_local *local, | |
514 | struct ieee80211_sub_if_data *sdata) | |
39ecc01d | 515 | { |
26da23b6 | 516 | unsigned int queues; |
39ecc01d | 517 | |
30686bf7 | 518 | if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { |
39ecc01d JB |
519 | int ac; |
520 | ||
521 | queues = 0; | |
522 | ||
523 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
524 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
525 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
526 | queues |= BIT(sdata->vif.cab_queue); | |
527 | } else { | |
528 | /* all queues */ | |
529 | queues = BIT(local->hw.queues) - 1; | |
530 | } | |
531 | ||
26da23b6 LC |
532 | return queues; |
533 | } | |
534 | ||
4f9610d5 LK |
535 | void __ieee80211_flush_queues(struct ieee80211_local *local, |
536 | struct ieee80211_sub_if_data *sdata, | |
3b24f4c6 | 537 | unsigned int queues, bool drop) |
26da23b6 | 538 | { |
26da23b6 LC |
539 | if (!local->ops->flush) |
540 | return; | |
541 | ||
4f9610d5 LK |
542 | /* |
543 | * If no queue was set, or if the HW doesn't support | |
544 | * IEEE80211_HW_QUEUE_CONTROL - flush all queues | |
545 | */ | |
30686bf7 | 546 | if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) |
4f9610d5 | 547 | queues = ieee80211_get_vif_queues(local, sdata); |
26da23b6 | 548 | |
59f48fe2 | 549 | ieee80211_stop_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
550 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
551 | false); | |
445ea4e8 | 552 | |
3b24f4c6 | 553 | drv_flush(local, sdata, queues, drop); |
445ea4e8 | 554 | |
59f48fe2 | 555 | ieee80211_wake_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
556 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
557 | false); | |
39ecc01d JB |
558 | } |
559 | ||
4f9610d5 | 560 | void ieee80211_flush_queues(struct ieee80211_local *local, |
3b24f4c6 | 561 | struct ieee80211_sub_if_data *sdata, bool drop) |
4f9610d5 | 562 | { |
3b24f4c6 | 563 | __ieee80211_flush_queues(local, sdata, 0, drop); |
4f9610d5 LK |
564 | } |
565 | ||
26da23b6 LC |
566 | void ieee80211_stop_vif_queues(struct ieee80211_local *local, |
567 | struct ieee80211_sub_if_data *sdata, | |
568 | enum queue_stop_reason reason) | |
569 | { | |
570 | ieee80211_stop_queues_by_reason(&local->hw, | |
571 | ieee80211_get_vif_queues(local, sdata), | |
572 | reason, true); | |
573 | } | |
574 | ||
575 | void ieee80211_wake_vif_queues(struct ieee80211_local *local, | |
576 | struct ieee80211_sub_if_data *sdata, | |
577 | enum queue_stop_reason reason) | |
578 | { | |
579 | ieee80211_wake_queues_by_reason(&local->hw, | |
580 | ieee80211_get_vif_queues(local, sdata), | |
581 | reason, true); | |
582 | } | |
583 | ||
3384d757 AN |
584 | static void __iterate_interfaces(struct ieee80211_local *local, |
585 | u32 iter_flags, | |
586 | void (*iterator)(void *data, u8 *mac, | |
587 | struct ieee80211_vif *vif), | |
588 | void *data) | |
dabeb344 | 589 | { |
dabeb344 | 590 | struct ieee80211_sub_if_data *sdata; |
3384d757 | 591 | bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; |
dabeb344 | 592 | |
c7c71066 | 593 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 594 | switch (sdata->vif.type) { |
05c914fe | 595 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
596 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
597 | continue; | |
598 | break; | |
05c914fe | 599 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 600 | continue; |
2ca27bcf | 601 | default: |
2f561feb ID |
602 | break; |
603 | } | |
8b2c9824 | 604 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
3384d757 | 605 | active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
8b2c9824 | 606 | continue; |
3384d757 | 607 | if (ieee80211_sdata_running(sdata) || !active_only) |
47846c9b | 608 | iterator(data, sdata->vif.addr, |
2f561feb ID |
609 | &sdata->vif); |
610 | } | |
611 | ||
c7c71066 JB |
612 | sdata = rcu_dereference_check(local->monitor_sdata, |
613 | lockdep_is_held(&local->iflist_mtx) || | |
614 | lockdep_rtnl_is_held()); | |
8b2c9824 | 615 | if (sdata && |
3384d757 | 616 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || |
8b2c9824 | 617 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
685fb72b | 618 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 619 | } |
685fb72b | 620 | |
3384d757 | 621 | void ieee80211_iterate_interfaces( |
c7c71066 JB |
622 | struct ieee80211_hw *hw, u32 iter_flags, |
623 | void (*iterator)(void *data, u8 *mac, | |
624 | struct ieee80211_vif *vif), | |
625 | void *data) | |
626 | { | |
627 | struct ieee80211_local *local = hw_to_local(hw); | |
628 | ||
629 | mutex_lock(&local->iflist_mtx); | |
3384d757 | 630 | __iterate_interfaces(local, iter_flags, iterator, data); |
c771c9d8 | 631 | mutex_unlock(&local->iflist_mtx); |
2f561feb | 632 | } |
3384d757 | 633 | EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); |
2f561feb ID |
634 | |
635 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 636 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
637 | void (*iterator)(void *data, u8 *mac, |
638 | struct ieee80211_vif *vif), | |
639 | void *data) | |
640 | { | |
641 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 642 | |
e38bad47 | 643 | rcu_read_lock(); |
3384d757 AN |
644 | __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
645 | iterator, data); | |
c7c71066 JB |
646 | rcu_read_unlock(); |
647 | } | |
648 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 649 | |
c7c71066 JB |
650 | void ieee80211_iterate_active_interfaces_rtnl( |
651 | struct ieee80211_hw *hw, u32 iter_flags, | |
652 | void (*iterator)(void *data, u8 *mac, | |
653 | struct ieee80211_vif *vif), | |
654 | void *data) | |
655 | { | |
656 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 657 | |
c7c71066 | 658 | ASSERT_RTNL(); |
685fb72b | 659 | |
3384d757 AN |
660 | __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
661 | iterator, data); | |
dabeb344 | 662 | } |
c7c71066 | 663 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 664 | |
0fc1e049 AN |
665 | static void __iterate_stations(struct ieee80211_local *local, |
666 | void (*iterator)(void *data, | |
667 | struct ieee80211_sta *sta), | |
668 | void *data) | |
669 | { | |
670 | struct sta_info *sta; | |
671 | ||
672 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
673 | if (!sta->uploaded) | |
674 | continue; | |
675 | ||
676 | iterator(data, &sta->sta); | |
677 | } | |
678 | } | |
679 | ||
680 | void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, | |
681 | void (*iterator)(void *data, | |
682 | struct ieee80211_sta *sta), | |
683 | void *data) | |
684 | { | |
685 | struct ieee80211_local *local = hw_to_local(hw); | |
686 | ||
687 | rcu_read_lock(); | |
688 | __iterate_stations(local, iterator, data); | |
689 | rcu_read_unlock(); | |
690 | } | |
691 | EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); | |
692 | ||
ad7e718c JB |
693 | struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) |
694 | { | |
695 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
696 | ||
697 | if (!ieee80211_sdata_running(sdata) || | |
698 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
699 | return NULL; | |
700 | return &sdata->vif; | |
701 | } | |
702 | EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); | |
703 | ||
dc5a1ad7 EG |
704 | struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) |
705 | { | |
6513e98e JB |
706 | struct ieee80211_sub_if_data *sdata; |
707 | ||
708 | if (!vif) | |
709 | return NULL; | |
710 | ||
711 | sdata = vif_to_sdata(vif); | |
dc5a1ad7 EG |
712 | |
713 | if (!ieee80211_sdata_running(sdata) || | |
714 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
715 | return NULL; | |
716 | ||
717 | return &sdata->wdev; | |
718 | } | |
719 | EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); | |
720 | ||
42935eca LR |
721 | /* |
722 | * Nothing should have been stuffed into the workqueue during | |
4afaff17 EG |
723 | * the suspend->resume cycle. Since we can't check each caller |
724 | * of this function if we are already quiescing / suspended, | |
725 | * check here and don't WARN since this can actually happen when | |
726 | * the rx path (for example) is racing against __ieee80211_suspend | |
727 | * and suspending / quiescing was set after the rx path checked | |
728 | * them. | |
42935eca LR |
729 | */ |
730 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
731 | { | |
4afaff17 EG |
732 | if (local->quiescing || (local->suspended && !local->resuming)) { |
733 | pr_warn("queueing ieee80211 work while going to suspend\n"); | |
ceb99fe0 | 734 | return false; |
4afaff17 | 735 | } |
42935eca LR |
736 | |
737 | return true; | |
738 | } | |
739 | ||
740 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
741 | { | |
742 | struct ieee80211_local *local = hw_to_local(hw); | |
743 | ||
744 | if (!ieee80211_can_queue_work(local)) | |
745 | return; | |
746 | ||
747 | queue_work(local->workqueue, work); | |
748 | } | |
749 | EXPORT_SYMBOL(ieee80211_queue_work); | |
750 | ||
751 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
752 | struct delayed_work *dwork, | |
753 | unsigned long delay) | |
754 | { | |
755 | struct ieee80211_local *local = hw_to_local(hw); | |
756 | ||
757 | if (!ieee80211_can_queue_work(local)) | |
758 | return; | |
759 | ||
760 | queue_delayed_work(local->workqueue, dwork, delay); | |
761 | } | |
762 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
763 | ||
35d865af | 764 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
765 | struct ieee802_11_elems *elems, |
766 | u64 filter, u32 crc) | |
767 | { | |
768 | size_t left = len; | |
35d865af | 769 | const u8 *pos = start; |
dd76986b | 770 | bool calc_crc = filter != 0; |
fcff4f10 | 771 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 772 | const u8 *ie; |
dd76986b | 773 | |
fcff4f10 | 774 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
775 | memset(elems, 0, sizeof(*elems)); |
776 | elems->ie_start = start; | |
777 | elems->total_len = len; | |
778 | ||
779 | while (left >= 2) { | |
780 | u8 id, elen; | |
fcff4f10 | 781 | bool elem_parse_failed; |
dd76986b JB |
782 | |
783 | id = *pos++; | |
784 | elen = *pos++; | |
785 | left -= 2; | |
786 | ||
fcff4f10 PS |
787 | if (elen > left) { |
788 | elems->parse_error = true; | |
dd76986b | 789 | break; |
fcff4f10 PS |
790 | } |
791 | ||
9690fb16 JB |
792 | switch (id) { |
793 | case WLAN_EID_SSID: | |
794 | case WLAN_EID_SUPP_RATES: | |
795 | case WLAN_EID_FH_PARAMS: | |
796 | case WLAN_EID_DS_PARAMS: | |
797 | case WLAN_EID_CF_PARAMS: | |
798 | case WLAN_EID_TIM: | |
799 | case WLAN_EID_IBSS_PARAMS: | |
800 | case WLAN_EID_CHALLENGE: | |
801 | case WLAN_EID_RSN: | |
802 | case WLAN_EID_ERP_INFO: | |
803 | case WLAN_EID_EXT_SUPP_RATES: | |
804 | case WLAN_EID_HT_CAPABILITY: | |
805 | case WLAN_EID_HT_OPERATION: | |
806 | case WLAN_EID_VHT_CAPABILITY: | |
807 | case WLAN_EID_VHT_OPERATION: | |
808 | case WLAN_EID_MESH_ID: | |
809 | case WLAN_EID_MESH_CONFIG: | |
810 | case WLAN_EID_PEER_MGMT: | |
811 | case WLAN_EID_PREQ: | |
812 | case WLAN_EID_PREP: | |
813 | case WLAN_EID_PERR: | |
814 | case WLAN_EID_RANN: | |
815 | case WLAN_EID_CHANNEL_SWITCH: | |
816 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
817 | case WLAN_EID_COUNTRY: | |
818 | case WLAN_EID_PWR_CONSTRAINT: | |
819 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 820 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf | 821 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
8f2535b9 | 822 | case WLAN_EID_CHAN_SWITCH_PARAM: |
9041c1fa | 823 | case WLAN_EID_EXT_CAPABILITY: |
53837584 AN |
824 | case WLAN_EID_CHAN_SWITCH_TIMING: |
825 | case WLAN_EID_LINK_ID: | |
b2e506bf JB |
826 | /* |
827 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
828 | * that if the content gets bigger it might be needed more than once | |
829 | */ | |
9690fb16 JB |
830 | if (test_bit(id, seen_elems)) { |
831 | elems->parse_error = true; | |
832 | left -= elen; | |
833 | pos += elen; | |
834 | continue; | |
835 | } | |
836 | break; | |
fcff4f10 | 837 | } |
dd76986b JB |
838 | |
839 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
840 | crc = crc32_be(crc, pos - 2, elen + 2); | |
841 | ||
fcff4f10 PS |
842 | elem_parse_failed = false; |
843 | ||
dd76986b | 844 | switch (id) { |
53837584 AN |
845 | case WLAN_EID_LINK_ID: |
846 | if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) { | |
847 | elem_parse_failed = true; | |
848 | break; | |
849 | } | |
850 | elems->lnk_id = (void *)(pos - 2); | |
851 | break; | |
852 | case WLAN_EID_CHAN_SWITCH_TIMING: | |
853 | if (elen != sizeof(struct ieee80211_ch_switch_timing)) { | |
854 | elem_parse_failed = true; | |
855 | break; | |
856 | } | |
857 | elems->ch_sw_timing = (void *)pos; | |
858 | break; | |
9041c1fa AN |
859 | case WLAN_EID_EXT_CAPABILITY: |
860 | elems->ext_capab = pos; | |
861 | elems->ext_capab_len = elen; | |
862 | break; | |
dd76986b JB |
863 | case WLAN_EID_SSID: |
864 | elems->ssid = pos; | |
865 | elems->ssid_len = elen; | |
866 | break; | |
867 | case WLAN_EID_SUPP_RATES: | |
868 | elems->supp_rates = pos; | |
869 | elems->supp_rates_len = elen; | |
870 | break; | |
dd76986b | 871 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
872 | if (elen >= 1) |
873 | elems->ds_params = pos; | |
874 | else | |
875 | elem_parse_failed = true; | |
dd76986b | 876 | break; |
dd76986b JB |
877 | case WLAN_EID_TIM: |
878 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
879 | elems->tim = (void *)pos; | |
880 | elems->tim_len = elen; | |
fcff4f10 PS |
881 | } else |
882 | elem_parse_failed = true; | |
dd76986b | 883 | break; |
dd76986b JB |
884 | case WLAN_EID_CHALLENGE: |
885 | elems->challenge = pos; | |
886 | elems->challenge_len = elen; | |
887 | break; | |
888 | case WLAN_EID_VENDOR_SPECIFIC: | |
889 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
890 | pos[2] == 0xf2) { | |
891 | /* Microsoft OUI (00:50:F2) */ | |
892 | ||
893 | if (calc_crc) | |
894 | crc = crc32_be(crc, pos - 2, elen + 2); | |
895 | ||
441a33ba | 896 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
897 | /* OUI Type 2 - WMM IE */ |
898 | if (pos[4] == 0) { | |
899 | elems->wmm_info = pos; | |
900 | elems->wmm_info_len = elen; | |
901 | } else if (pos[4] == 1) { | |
902 | elems->wmm_param = pos; | |
903 | elems->wmm_param_len = elen; | |
904 | } | |
905 | } | |
906 | } | |
907 | break; | |
908 | case WLAN_EID_RSN: | |
909 | elems->rsn = pos; | |
910 | elems->rsn_len = elen; | |
911 | break; | |
912 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
913 | if (elen >= 1) |
914 | elems->erp_info = pos; | |
915 | else | |
916 | elem_parse_failed = true; | |
dd76986b JB |
917 | break; |
918 | case WLAN_EID_EXT_SUPP_RATES: | |
919 | elems->ext_supp_rates = pos; | |
920 | elems->ext_supp_rates_len = elen; | |
921 | break; | |
922 | case WLAN_EID_HT_CAPABILITY: | |
923 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
924 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
925 | else |
926 | elem_parse_failed = true; | |
dd76986b | 927 | break; |
074d46d1 JB |
928 | case WLAN_EID_HT_OPERATION: |
929 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
930 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
931 | else |
932 | elem_parse_failed = true; | |
dd76986b | 933 | break; |
818255ea MP |
934 | case WLAN_EID_VHT_CAPABILITY: |
935 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
936 | elems->vht_cap_elem = (void *)pos; | |
937 | else | |
938 | elem_parse_failed = true; | |
939 | break; | |
940 | case WLAN_EID_VHT_OPERATION: | |
941 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
942 | elems->vht_operation = (void *)pos; | |
943 | else | |
944 | elem_parse_failed = true; | |
945 | break; | |
bee7f586 JB |
946 | case WLAN_EID_OPMODE_NOTIF: |
947 | if (elen > 0) | |
948 | elems->opmode_notif = pos; | |
949 | else | |
950 | elem_parse_failed = true; | |
951 | break; | |
dd76986b JB |
952 | case WLAN_EID_MESH_ID: |
953 | elems->mesh_id = pos; | |
954 | elems->mesh_id_len = elen; | |
955 | break; | |
956 | case WLAN_EID_MESH_CONFIG: | |
957 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
958 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
959 | else |
960 | elem_parse_failed = true; | |
dd76986b JB |
961 | break; |
962 | case WLAN_EID_PEER_MGMT: | |
963 | elems->peering = pos; | |
964 | elems->peering_len = elen; | |
965 | break; | |
3f52b7e3 MP |
966 | case WLAN_EID_MESH_AWAKE_WINDOW: |
967 | if (elen >= 2) | |
968 | elems->awake_window = (void *)pos; | |
969 | break; | |
dd76986b JB |
970 | case WLAN_EID_PREQ: |
971 | elems->preq = pos; | |
972 | elems->preq_len = elen; | |
973 | break; | |
974 | case WLAN_EID_PREP: | |
975 | elems->prep = pos; | |
976 | elems->prep_len = elen; | |
977 | break; | |
978 | case WLAN_EID_PERR: | |
979 | elems->perr = pos; | |
980 | elems->perr_len = elen; | |
981 | break; | |
982 | case WLAN_EID_RANN: | |
983 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
984 | elems->rann = (void *)pos; | |
fcff4f10 PS |
985 | else |
986 | elem_parse_failed = true; | |
dd76986b JB |
987 | break; |
988 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
989 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
990 | elem_parse_failed = true; | |
991 | break; | |
992 | } | |
993 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 994 | break; |
b4f286a1 JB |
995 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
996 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
997 | elem_parse_failed = true; | |
998 | break; | |
999 | } | |
1000 | elems->ext_chansw_ie = (void *)pos; | |
1001 | break; | |
85220d71 JB |
1002 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
1003 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
1004 | elem_parse_failed = true; | |
1005 | break; | |
1006 | } | |
1007 | elems->sec_chan_offs = (void *)pos; | |
1008 | break; | |
8f2535b9 CYY |
1009 | case WLAN_EID_CHAN_SWITCH_PARAM: |
1010 | if (elen != | |
1011 | sizeof(*elems->mesh_chansw_params_ie)) { | |
1012 | elem_parse_failed = true; | |
1013 | break; | |
1014 | } | |
1015 | elems->mesh_chansw_params_ie = (void *)pos; | |
1016 | break; | |
b2e506bf JB |
1017 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
1018 | if (!action || | |
1019 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
1020 | elem_parse_failed = true; | |
1021 | break; | |
1022 | } | |
1023 | elems->wide_bw_chansw_ie = (void *)pos; | |
1024 | break; | |
1025 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
1026 | if (action) { | |
1027 | elem_parse_failed = true; | |
1028 | break; | |
1029 | } | |
1030 | /* | |
1031 | * This is a bit tricky, but as we only care about | |
1032 | * the wide bandwidth channel switch element, so | |
1033 | * just parse it out manually. | |
1034 | */ | |
1035 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
1036 | pos, elen); | |
1037 | if (ie) { | |
1038 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
1039 | elems->wide_bw_chansw_ie = | |
1040 | (void *)(ie + 2); | |
1041 | else | |
1042 | elem_parse_failed = true; | |
1043 | } | |
1044 | break; | |
dd76986b JB |
1045 | case WLAN_EID_COUNTRY: |
1046 | elems->country_elem = pos; | |
1047 | elems->country_elem_len = elen; | |
1048 | break; | |
1049 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
1050 | if (elen != 1) { |
1051 | elem_parse_failed = true; | |
1052 | break; | |
1053 | } | |
dd76986b | 1054 | elems->pwr_constr_elem = pos; |
dd76986b | 1055 | break; |
c8d65917 SG |
1056 | case WLAN_EID_CISCO_VENDOR_SPECIFIC: |
1057 | /* Lots of different options exist, but we only care | |
1058 | * about the Dynamic Transmit Power Control element. | |
1059 | * First check for the Cisco OUI, then for the DTPC | |
1060 | * tag (0x00). | |
1061 | */ | |
1062 | if (elen < 4) { | |
1063 | elem_parse_failed = true; | |
1064 | break; | |
1065 | } | |
1066 | ||
1067 | if (pos[0] != 0x00 || pos[1] != 0x40 || | |
1068 | pos[2] != 0x96 || pos[3] != 0x00) | |
1069 | break; | |
1070 | ||
1071 | if (elen != 6) { | |
1072 | elem_parse_failed = true; | |
1073 | break; | |
1074 | } | |
1075 | ||
1076 | if (calc_crc) | |
1077 | crc = crc32_be(crc, pos - 2, elen + 2); | |
1078 | ||
1079 | elems->cisco_dtpc_elem = pos; | |
1080 | break; | |
dd76986b | 1081 | case WLAN_EID_TIMEOUT_INTERVAL: |
79ba1d89 JB |
1082 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
1083 | elems->timeout_int = (void *)pos; | |
1084 | else | |
1085 | elem_parse_failed = true; | |
dd76986b JB |
1086 | break; |
1087 | default: | |
1088 | break; | |
1089 | } | |
1090 | ||
fcff4f10 PS |
1091 | if (elem_parse_failed) |
1092 | elems->parse_error = true; | |
1093 | else | |
5df45690 | 1094 | __set_bit(id, seen_elems); |
fcff4f10 | 1095 | |
dd76986b JB |
1096 | left -= elen; |
1097 | pos += elen; | |
1098 | } | |
1099 | ||
fcff4f10 PS |
1100 | if (left != 0) |
1101 | elems->parse_error = true; | |
1102 | ||
dd76986b JB |
1103 | return crc; |
1104 | } | |
1105 | ||
3abead59 JB |
1106 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
1107 | bool bss_notify) | |
5825fe10 JB |
1108 | { |
1109 | struct ieee80211_local *local = sdata->local; | |
1110 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 1111 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 1112 | int ac; |
a8ce8544 | 1113 | bool use_11b, enable_qos; |
239281f8 | 1114 | bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ |
aa837e1d | 1115 | int aCWmin, aCWmax; |
5825fe10 JB |
1116 | |
1117 | if (!local->ops->conf_tx) | |
1118 | return; | |
1119 | ||
54bcbc69 JB |
1120 | if (local->hw.queues < IEEE80211_NUM_ACS) |
1121 | return; | |
1122 | ||
5825fe10 JB |
1123 | memset(&qparam, 0, sizeof(qparam)); |
1124 | ||
55de908a JB |
1125 | rcu_read_lock(); |
1126 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1127 | use_11b = (chanctx_conf && | |
4bf88530 | 1128 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 1129 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 1130 | rcu_read_unlock(); |
5825fe10 | 1131 | |
a8ce8544 SG |
1132 | /* |
1133 | * By default disable QoS in STA mode for old access points, which do | |
1134 | * not support 802.11e. New APs will provide proper queue parameters, | |
1135 | * that we will configure later. | |
1136 | */ | |
1137 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
1138 | ||
239281f8 RL |
1139 | is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); |
1140 | ||
1f4ffde8 FZ |
1141 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1142 | aCWmax = 1023; | |
1143 | if (use_11b) | |
1144 | aCWmin = 31; | |
1145 | else | |
1146 | aCWmin = 15; | |
1147 | ||
1148 | /* Confiure old 802.11b/g medium access rules. */ | |
1149 | qparam.cw_max = aCWmax; | |
1150 | qparam.cw_min = aCWmin; | |
1151 | qparam.txop = 0; | |
1152 | qparam.aifs = 2; | |
aa837e1d | 1153 | |
1f4ffde8 FZ |
1154 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1155 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1156 | if (enable_qos) { |
1157 | switch (ac) { | |
1158 | case IEEE80211_AC_BK: | |
1159 | qparam.cw_max = aCWmax; | |
1160 | qparam.cw_min = aCWmin; | |
1161 | qparam.txop = 0; | |
239281f8 RL |
1162 | if (is_ocb) |
1163 | qparam.aifs = 9; | |
1164 | else | |
1165 | qparam.aifs = 7; | |
a8ce8544 SG |
1166 | break; |
1167 | /* never happens but let's not leave undefined */ | |
1168 | default: | |
1169 | case IEEE80211_AC_BE: | |
1170 | qparam.cw_max = aCWmax; | |
1171 | qparam.cw_min = aCWmin; | |
1172 | qparam.txop = 0; | |
239281f8 RL |
1173 | if (is_ocb) |
1174 | qparam.aifs = 6; | |
1175 | else | |
1176 | qparam.aifs = 3; | |
a8ce8544 SG |
1177 | break; |
1178 | case IEEE80211_AC_VI: | |
1179 | qparam.cw_max = aCWmin; | |
1180 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
239281f8 RL |
1181 | if (is_ocb) |
1182 | qparam.txop = 0; | |
1183 | else if (use_11b) | |
a8ce8544 SG |
1184 | qparam.txop = 6016/32; |
1185 | else | |
1186 | qparam.txop = 3008/32; | |
239281f8 RL |
1187 | |
1188 | if (is_ocb) | |
1189 | qparam.aifs = 3; | |
1190 | else | |
1191 | qparam.aifs = 2; | |
a8ce8544 SG |
1192 | break; |
1193 | case IEEE80211_AC_VO: | |
1194 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1195 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
239281f8 RL |
1196 | if (is_ocb) |
1197 | qparam.txop = 0; | |
1198 | else if (use_11b) | |
a8ce8544 SG |
1199 | qparam.txop = 3264/32; |
1200 | else | |
1201 | qparam.txop = 1504/32; | |
1202 | qparam.aifs = 2; | |
1203 | break; | |
1204 | } | |
aa837e1d | 1205 | } |
5825fe10 | 1206 | |
ab13315a KV |
1207 | qparam.uapsd = false; |
1208 | ||
54bcbc69 JB |
1209 | sdata->tx_conf[ac] = qparam; |
1210 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1211 | } |
e1b3ec1a | 1212 | |
f142c6b9 JB |
1213 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1214 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1215 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1216 | if (bss_notify) |
1217 | ieee80211_bss_info_change_notify(sdata, | |
1218 | BSS_CHANGED_QOS); | |
d9734979 | 1219 | } |
5825fe10 | 1220 | } |
e50db65c | 1221 | |
46900298 | 1222 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1223 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1224 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1225 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1226 | u32 tx_flags) | |
46900298 JB |
1227 | { |
1228 | struct ieee80211_local *local = sdata->local; | |
1229 | struct sk_buff *skb; | |
1230 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1231 | int err; |
46900298 | 1232 | |
15e230ab | 1233 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
744462a9 MS |
1234 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + |
1235 | 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN); | |
d15b8459 | 1236 | if (!skb) |
46900298 | 1237 | return; |
d15b8459 | 1238 | |
744462a9 | 1239 | skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); |
46900298 JB |
1240 | |
1241 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1242 | memset(mgmt, 0, 24 + 6); | |
1243 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1244 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1245 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1246 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1247 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1248 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1249 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1250 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1251 | if (extra) |
1252 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1253 | |
fffd0934 JB |
1254 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1255 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1256 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1257 | WARN_ON(err); | |
1258 | } | |
1259 | ||
1672c0e3 JB |
1260 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1261 | tx_flags; | |
62ae67be | 1262 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1263 | } |
1264 | ||
6ae16775 AQ |
1265 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1266 | const u8 *bssid, u16 stype, u16 reason, | |
1267 | bool send_frame, u8 *frame_buf) | |
1268 | { | |
1269 | struct ieee80211_local *local = sdata->local; | |
1270 | struct sk_buff *skb; | |
1271 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1272 | ||
1273 | /* build frame */ | |
1274 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1275 | mgmt->duration = 0; /* initialize only */ | |
1276 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1277 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1278 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1279 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1280 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1281 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1282 | ||
1283 | if (send_frame) { | |
1284 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1285 | IEEE80211_DEAUTH_FRAME_LEN); | |
1286 | if (!skb) | |
1287 | return; | |
1288 | ||
1289 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1290 | ||
1291 | /* copy in frame */ | |
1292 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1293 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1294 | ||
1295 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1296 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1297 | IEEE80211_SKB_CB(skb)->flags |= | |
1298 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1299 | ||
1300 | ieee80211_tx_skb(sdata, skb); | |
1301 | } | |
1302 | } | |
1303 | ||
c56ef672 DS |
1304 | static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, |
1305 | u8 *buffer, size_t buffer_len, | |
1306 | const u8 *ie, size_t ie_len, | |
1307 | enum ieee80211_band band, | |
1308 | u32 rate_mask, | |
1309 | struct cfg80211_chan_def *chandef, | |
1310 | size_t *offset) | |
de95a54b JB |
1311 | { |
1312 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1313 | u8 *pos = buffer, *end = buffer + buffer_len; |
c56ef672 | 1314 | size_t noffset; |
8e664fb3 | 1315 | int supp_rates_len, i; |
8dcb2003 JM |
1316 | u8 rates[32]; |
1317 | int num_rates; | |
1318 | int ext_rates_len; | |
2103dec1 SW |
1319 | int shift; |
1320 | u32 rate_flags; | |
40a11ca8 | 1321 | bool have_80mhz = false; |
de95a54b | 1322 | |
c56ef672 DS |
1323 | *offset = 0; |
1324 | ||
4d36ec58 | 1325 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1326 | if (WARN_ON_ONCE(!sband)) |
1327 | return 0; | |
de95a54b | 1328 | |
2103dec1 SW |
1329 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1330 | shift = ieee80211_chandef_get_shift(chandef); | |
1331 | ||
8dcb2003 JM |
1332 | num_rates = 0; |
1333 | for (i = 0; i < sband->n_bitrates; i++) { | |
1334 | if ((BIT(i) & rate_mask) == 0) | |
1335 | continue; /* skip rate */ | |
2103dec1 SW |
1336 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1337 | continue; | |
1338 | ||
1339 | rates[num_rates++] = | |
1340 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1341 | (1 << shift) * 5); | |
8dcb2003 JM |
1342 | } |
1343 | ||
1344 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1345 | |
c604b9f2 JB |
1346 | if (end - pos < 2 + supp_rates_len) |
1347 | goto out_err; | |
de95a54b | 1348 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1349 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1350 | memcpy(pos, rates, supp_rates_len); |
1351 | pos += supp_rates_len; | |
8e664fb3 JB |
1352 | |
1353 | /* insert "request information" if in custom IEs */ | |
1354 | if (ie && ie_len) { | |
1355 | static const u8 before_extrates[] = { | |
1356 | WLAN_EID_SSID, | |
1357 | WLAN_EID_SUPP_RATES, | |
1358 | WLAN_EID_REQUEST, | |
1359 | }; | |
1360 | noffset = ieee80211_ie_split(ie, ie_len, | |
1361 | before_extrates, | |
1362 | ARRAY_SIZE(before_extrates), | |
c56ef672 DS |
1363 | *offset); |
1364 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1365 | goto out_err; |
c56ef672 DS |
1366 | memcpy(pos, ie + *offset, noffset - *offset); |
1367 | pos += noffset - *offset; | |
1368 | *offset = noffset; | |
8e664fb3 JB |
1369 | } |
1370 | ||
8dcb2003 JM |
1371 | ext_rates_len = num_rates - supp_rates_len; |
1372 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1373 | if (end - pos < 2 + ext_rates_len) |
1374 | goto out_err; | |
8e664fb3 | 1375 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1376 | *pos++ = ext_rates_len; |
1377 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1378 | pos += ext_rates_len; | |
8e664fb3 JB |
1379 | } |
1380 | ||
2103dec1 | 1381 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1382 | if (end - pos < 3) |
1383 | goto out_err; | |
651b5225 JM |
1384 | *pos++ = WLAN_EID_DS_PARAMS; |
1385 | *pos++ = 1; | |
2103dec1 SW |
1386 | *pos++ = ieee80211_frequency_to_channel( |
1387 | chandef->chan->center_freq); | |
651b5225 JM |
1388 | } |
1389 | ||
8e664fb3 JB |
1390 | /* insert custom IEs that go before HT */ |
1391 | if (ie && ie_len) { | |
1392 | static const u8 before_ht[] = { | |
1393 | WLAN_EID_SSID, | |
1394 | WLAN_EID_SUPP_RATES, | |
1395 | WLAN_EID_REQUEST, | |
1396 | WLAN_EID_EXT_SUPP_RATES, | |
1397 | WLAN_EID_DS_PARAMS, | |
1398 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1399 | }; | |
1400 | noffset = ieee80211_ie_split(ie, ie_len, | |
1401 | before_ht, ARRAY_SIZE(before_ht), | |
c56ef672 DS |
1402 | *offset); |
1403 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1404 | goto out_err; |
c56ef672 DS |
1405 | memcpy(pos, ie + *offset, noffset - *offset); |
1406 | pos += noffset - *offset; | |
1407 | *offset = noffset; | |
de95a54b JB |
1408 | } |
1409 | ||
c604b9f2 JB |
1410 | if (sband->ht_cap.ht_supported) { |
1411 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1412 | goto out_err; | |
ef96a842 BG |
1413 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1414 | sband->ht_cap.cap); | |
c604b9f2 | 1415 | } |
5ef2d41a | 1416 | |
de95a54b JB |
1417 | /* |
1418 | * If adding more here, adjust code in main.c | |
1419 | * that calculates local->scan_ies_len. | |
1420 | */ | |
1421 | ||
4d952300 | 1422 | /* insert custom IEs that go before VHT */ |
8e664fb3 | 1423 | if (ie && ie_len) { |
4d952300 JB |
1424 | static const u8 before_vht[] = { |
1425 | WLAN_EID_SSID, | |
1426 | WLAN_EID_SUPP_RATES, | |
1427 | WLAN_EID_REQUEST, | |
1428 | WLAN_EID_EXT_SUPP_RATES, | |
1429 | WLAN_EID_DS_PARAMS, | |
1430 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1431 | WLAN_EID_HT_CAPABILITY, | |
1432 | WLAN_EID_BSS_COEX_2040, | |
1433 | WLAN_EID_EXT_CAPABILITY, | |
1434 | WLAN_EID_SSID_LIST, | |
1435 | WLAN_EID_CHANNEL_USAGE, | |
1436 | WLAN_EID_INTERWORKING, | |
1437 | /* mesh ID can't happen here */ | |
1438 | /* 60 GHz can't happen here right now */ | |
1439 | }; | |
1440 | noffset = ieee80211_ie_split(ie, ie_len, | |
1441 | before_vht, ARRAY_SIZE(before_vht), | |
c56ef672 DS |
1442 | *offset); |
1443 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1444 | goto out_err; |
c56ef672 DS |
1445 | memcpy(pos, ie + *offset, noffset - *offset); |
1446 | pos += noffset - *offset; | |
1447 | *offset = noffset; | |
de95a54b JB |
1448 | } |
1449 | ||
40a11ca8 JB |
1450 | /* Check if any channel in this sband supports at least 80 MHz */ |
1451 | for (i = 0; i < sband->n_channels; i++) { | |
fa44b988 AN |
1452 | if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | |
1453 | IEEE80211_CHAN_NO_80MHZ)) | |
1454 | continue; | |
1455 | ||
1456 | have_80mhz = true; | |
1457 | break; | |
40a11ca8 JB |
1458 | } |
1459 | ||
1460 | if (sband->vht_cap.vht_supported && have_80mhz) { | |
c604b9f2 JB |
1461 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) |
1462 | goto out_err; | |
ba0afa2f MP |
1463 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1464 | sband->vht_cap.cap); | |
c604b9f2 | 1465 | } |
ba0afa2f | 1466 | |
c604b9f2 JB |
1467 | return pos - buffer; |
1468 | out_err: | |
1469 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1470 | return pos - buffer; |
1471 | } | |
1472 | ||
c56ef672 DS |
1473 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
1474 | size_t buffer_len, | |
1475 | struct ieee80211_scan_ies *ie_desc, | |
1476 | const u8 *ie, size_t ie_len, | |
1477 | u8 bands_used, u32 *rate_masks, | |
1478 | struct cfg80211_chan_def *chandef) | |
1479 | { | |
1480 | size_t pos = 0, old_pos = 0, custom_ie_offset = 0; | |
1481 | int i; | |
1482 | ||
1483 | memset(ie_desc, 0, sizeof(*ie_desc)); | |
1484 | ||
1485 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { | |
1486 | if (bands_used & BIT(i)) { | |
1487 | pos += ieee80211_build_preq_ies_band(local, | |
1488 | buffer + pos, | |
1489 | buffer_len - pos, | |
1490 | ie, ie_len, i, | |
1491 | rate_masks[i], | |
1492 | chandef, | |
1493 | &custom_ie_offset); | |
1494 | ie_desc->ies[i] = buffer + old_pos; | |
1495 | ie_desc->len[i] = pos - old_pos; | |
1496 | old_pos = pos; | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | /* add any remaining custom IEs */ | |
1501 | if (ie && ie_len) { | |
1502 | if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, | |
1503 | "not enough space for preq custom IEs\n")) | |
1504 | return pos; | |
1505 | memcpy(buffer + pos, ie + custom_ie_offset, | |
1506 | ie_len - custom_ie_offset); | |
1507 | ie_desc->common_ies = buffer + pos; | |
1508 | ie_desc->common_ie_len = ie_len - custom_ie_offset; | |
1509 | pos += ie_len - custom_ie_offset; | |
1510 | } | |
1511 | ||
1512 | return pos; | |
1513 | }; | |
1514 | ||
a619a4c0 | 1515 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
a344d677 JB |
1516 | const u8 *src, const u8 *dst, |
1517 | u32 ratemask, | |
6b77863b | 1518 | struct ieee80211_channel *chan, |
a619a4c0 | 1519 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1520 | const u8 *ie, size_t ie_len, |
1521 | bool directed) | |
46900298 JB |
1522 | { |
1523 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1524 | struct cfg80211_chan_def chandef; |
46900298 JB |
1525 | struct sk_buff *skb; |
1526 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1527 | int ies_len; |
c56ef672 DS |
1528 | u32 rate_masks[IEEE80211_NUM_BANDS] = {}; |
1529 | struct ieee80211_scan_ies dummy_ie_desc; | |
46900298 | 1530 | |
a806c558 PS |
1531 | /* |
1532 | * Do not send DS Channel parameter for directed probe requests | |
1533 | * in order to maximize the chance that we get a response. Some | |
1534 | * badly-behaved APs don't respond when this parameter is included. | |
1535 | */ | |
2103dec1 | 1536 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1537 | if (directed) |
2103dec1 | 1538 | chandef.chan = NULL; |
a806c558 | 1539 | else |
2103dec1 | 1540 | chandef.chan = chan; |
651b5225 | 1541 | |
a344d677 JB |
1542 | skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, |
1543 | 100 + ie_len); | |
5b2bbf75 | 1544 | if (!skb) |
b9a9ada1 JB |
1545 | return NULL; |
1546 | ||
c56ef672 | 1547 | rate_masks[chan->band] = ratemask; |
b9a9ada1 | 1548 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), |
c56ef672 DS |
1549 | skb_tailroom(skb), &dummy_ie_desc, |
1550 | ie, ie_len, BIT(chan->band), | |
1551 | rate_masks, &chandef); | |
b9a9ada1 | 1552 | skb_put(skb, ies_len); |
7c12ce8b | 1553 | |
46900298 | 1554 | if (dst) { |
7c12ce8b | 1555 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1556 | memcpy(mgmt->da, dst, ETH_ALEN); |
1557 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1558 | } |
46900298 | 1559 | |
62ae67be | 1560 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1561 | |
a619a4c0 JO |
1562 | return skb; |
1563 | } | |
1564 | ||
a344d677 JB |
1565 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, |
1566 | const u8 *src, const u8 *dst, | |
a619a4c0 | 1567 | const u8 *ssid, size_t ssid_len, |
a806c558 | 1568 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1569 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1570 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1571 | { |
1572 | struct sk_buff *skb; | |
1573 | ||
a344d677 | 1574 | skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel, |
6b77863b | 1575 | ssid, ssid_len, |
85a237fe | 1576 | ie, ie_len, directed); |
aad14ceb | 1577 | if (skb) { |
1672c0e3 | 1578 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1579 | if (scan) |
1580 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1581 | else | |
1582 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1583 | } |
46900298 JB |
1584 | } |
1585 | ||
2103dec1 | 1586 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1587 | struct ieee802_11_elems *elems, |
9ebb61a2 | 1588 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1589 | { |
1590 | struct ieee80211_supported_band *sband; | |
46900298 | 1591 | size_t num_rates; |
2103dec1 SW |
1592 | u32 supp_rates, rate_flags; |
1593 | int i, j, shift; | |
1594 | sband = sdata->local->hw.wiphy->bands[band]; | |
1595 | ||
1596 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1597 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1598 | |
4ee73f33 MK |
1599 | if (WARN_ON(!sband)) |
1600 | return 1; | |
46900298 | 1601 | |
46900298 JB |
1602 | num_rates = sband->n_bitrates; |
1603 | supp_rates = 0; | |
1604 | for (i = 0; i < elems->supp_rates_len + | |
1605 | elems->ext_supp_rates_len; i++) { | |
1606 | u8 rate = 0; | |
1607 | int own_rate; | |
9ebb61a2 | 1608 | bool is_basic; |
46900298 JB |
1609 | if (i < elems->supp_rates_len) |
1610 | rate = elems->supp_rates[i]; | |
1611 | else if (elems->ext_supp_rates) | |
1612 | rate = elems->ext_supp_rates | |
1613 | [i - elems->supp_rates_len]; | |
1614 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1615 | is_basic = !!(rate & 0x80); |
1616 | ||
1617 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1618 | continue; | |
1619 | ||
1620 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1621 | int brate; |
1622 | if ((rate_flags & sband->bitrates[j].flags) | |
1623 | != rate_flags) | |
1624 | continue; | |
1625 | ||
1626 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1627 | 1 << shift); | |
1628 | ||
1629 | if (brate == own_rate) { | |
46900298 | 1630 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1631 | if (basic_rates && is_basic) |
1632 | *basic_rates |= BIT(j); | |
1633 | } | |
1634 | } | |
46900298 JB |
1635 | } |
1636 | return supp_rates; | |
1637 | } | |
f2753ddb | 1638 | |
84f6a01c JB |
1639 | void ieee80211_stop_device(struct ieee80211_local *local) |
1640 | { | |
1641 | ieee80211_led_radio(local, false); | |
67408c8c | 1642 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1643 | |
1644 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1645 | |
1646 | flush_workqueue(local->workqueue); | |
678f415f | 1647 | drv_stop(local); |
84f6a01c JB |
1648 | } |
1649 | ||
f6837ba8 JB |
1650 | static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) |
1651 | { | |
1652 | struct ieee80211_sub_if_data *sdata; | |
1653 | struct ieee80211_chanctx *ctx; | |
1654 | ||
1655 | /* | |
1656 | * We get here if during resume the device can't be restarted properly. | |
1657 | * We might also get here if this happens during HW reset, which is a | |
1658 | * slightly different situation and we need to drop all connections in | |
1659 | * the latter case. | |
1660 | * | |
1661 | * Ask cfg80211 to turn off all interfaces, this will result in more | |
1662 | * warnings but at least we'll then get into a clean stopped state. | |
1663 | */ | |
1664 | ||
1665 | local->resuming = false; | |
1666 | local->suspended = false; | |
1667 | local->started = false; | |
7584f88f | 1668 | local->in_reconfig = false; |
f6837ba8 JB |
1669 | |
1670 | /* scheduled scan clearly can't be running any more, but tell | |
1671 | * cfg80211 and clear local state | |
1672 | */ | |
1673 | ieee80211_sched_scan_end(local); | |
1674 | ||
1675 | list_for_each_entry(sdata, &local->interfaces, list) | |
1676 | sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; | |
1677 | ||
1678 | /* Mark channel contexts as not being in the driver any more to avoid | |
1679 | * removing them from the driver during the shutdown process... | |
1680 | */ | |
1681 | mutex_lock(&local->chanctx_mtx); | |
1682 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1683 | ctx->driver_present = false; | |
1684 | mutex_unlock(&local->chanctx_mtx); | |
1685 | ||
1686 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); | |
1687 | } | |
1688 | ||
153a5fc4 SG |
1689 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1690 | struct ieee80211_sub_if_data *sdata) | |
1691 | { | |
1692 | struct ieee80211_chanctx_conf *conf; | |
1693 | struct ieee80211_chanctx *ctx; | |
1694 | ||
1695 | if (!local->use_chanctx) | |
1696 | return; | |
1697 | ||
1698 | mutex_lock(&local->chanctx_mtx); | |
1699 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1700 | lockdep_is_held(&local->chanctx_mtx)); | |
1701 | if (conf) { | |
1702 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1703 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1704 | } | |
1705 | mutex_unlock(&local->chanctx_mtx); | |
1706 | } | |
1707 | ||
f2753ddb JB |
1708 | int ieee80211_reconfig(struct ieee80211_local *local) |
1709 | { | |
1710 | struct ieee80211_hw *hw = &local->hw; | |
1711 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1712 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1713 | struct sta_info *sta; |
2683d65b | 1714 | int res, i; |
d888130a | 1715 | bool reconfig_due_to_wowlan = false; |
d43c6b6e | 1716 | struct ieee80211_sub_if_data *sched_scan_sdata; |
6ea0a69c | 1717 | struct cfg80211_sched_scan_request *sched_scan_req; |
d43c6b6e | 1718 | bool sched_scan_stopped = false; |
b0485e9f | 1719 | bool suspended = local->suspended; |
d888130a | 1720 | |
0f8b8245 EP |
1721 | /* nothing to do if HW shouldn't run */ |
1722 | if (!local->open_count) | |
1723 | goto wake_up; | |
1724 | ||
8f21b0ad | 1725 | #ifdef CONFIG_PM |
b0485e9f | 1726 | if (suspended) |
ceb99fe0 | 1727 | local->resuming = true; |
f2753ddb | 1728 | |
eecc4800 | 1729 | if (local->wowlan) { |
b0485e9f EP |
1730 | /* |
1731 | * In the wowlan case, both mac80211 and the device | |
1732 | * are functional when the resume op is called, so | |
1733 | * clear local->suspended so the device could operate | |
1734 | * normally (e.g. pass rx frames). | |
1735 | */ | |
1736 | local->suspended = false; | |
eecc4800 | 1737 | res = drv_resume(local); |
27b3eb9c | 1738 | local->wowlan = false; |
eecc4800 JB |
1739 | if (res < 0) { |
1740 | local->resuming = false; | |
1741 | return res; | |
1742 | } | |
1743 | if (res == 0) | |
1744 | goto wake_up; | |
1745 | WARN_ON(res > 1); | |
1746 | /* | |
1747 | * res is 1, which means the driver requested | |
1748 | * to go through a regular reset on wakeup. | |
b0485e9f | 1749 | * restore local->suspended in this case. |
eecc4800 | 1750 | */ |
d888130a | 1751 | reconfig_due_to_wowlan = true; |
b0485e9f | 1752 | local->suspended = true; |
eecc4800 JB |
1753 | } |
1754 | #endif | |
f2753ddb | 1755 | |
94f9b97b JB |
1756 | /* |
1757 | * Upon resume hardware can sometimes be goofy due to | |
1758 | * various platform / driver / bus issues, so restarting | |
1759 | * the device may at times not work immediately. Propagate | |
1760 | * the error. | |
1761 | */ | |
1762 | res = drv_start(local); | |
1763 | if (res) { | |
b0485e9f | 1764 | if (suspended) |
f6837ba8 JB |
1765 | WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); |
1766 | else | |
1767 | WARN(1, "Hardware became unavailable during restart.\n"); | |
1768 | ieee80211_handle_reconfig_failure(local); | |
94f9b97b | 1769 | return res; |
f2753ddb JB |
1770 | } |
1771 | ||
7f281975 YAP |
1772 | /* setup fragmentation threshold */ |
1773 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1774 | ||
1775 | /* setup RTS threshold */ | |
1776 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1777 | ||
1778 | /* reset coverage class */ | |
1779 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1780 | ||
94f9b97b JB |
1781 | ieee80211_led_radio(local, true); |
1782 | ieee80211_mod_tpt_led_trig(local, | |
1783 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1784 | ||
f2753ddb | 1785 | /* add interfaces */ |
4b6f1dd6 JB |
1786 | sdata = rtnl_dereference(local->monitor_sdata); |
1787 | if (sdata) { | |
3c3e21e7 JB |
1788 | /* in HW restart it exists already */ |
1789 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1790 | res = drv_add_interface(local, sdata); |
1791 | if (WARN_ON(res)) { | |
0c2bef46 | 1792 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
4b6f1dd6 JB |
1793 | synchronize_net(); |
1794 | kfree(sdata); | |
1795 | } | |
1796 | } | |
1797 | ||
f2753ddb JB |
1798 | list_for_each_entry(sdata, &local->interfaces, list) { |
1799 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1800 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
c8fff3dc | 1801 | ieee80211_sdata_running(sdata)) { |
7b7eab6f | 1802 | res = drv_add_interface(local, sdata); |
c8fff3dc LC |
1803 | if (WARN_ON(res)) |
1804 | break; | |
1805 | } | |
1806 | } | |
1807 | ||
1808 | /* If adding any of the interfaces failed above, roll back and | |
1809 | * report failure. | |
1810 | */ | |
1811 | if (res) { | |
1812 | list_for_each_entry_continue_reverse(sdata, &local->interfaces, | |
1813 | list) | |
1814 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1815 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1816 | ieee80211_sdata_running(sdata)) | |
1817 | drv_remove_interface(local, sdata); | |
1818 | ieee80211_handle_reconfig_failure(local); | |
1819 | return res; | |
f2753ddb JB |
1820 | } |
1821 | ||
55de908a | 1822 | /* add channel contexts */ |
f0dea9c7 AS |
1823 | if (local->use_chanctx) { |
1824 | mutex_lock(&local->chanctx_mtx); | |
1825 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
5bcae31d MK |
1826 | if (ctx->replace_state != |
1827 | IEEE80211_CHANCTX_REPLACES_OTHER) | |
1828 | WARN_ON(drv_add_chanctx(local, ctx)); | |
f0dea9c7 | 1829 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1830 | |
7df180f7 ZG |
1831 | list_for_each_entry(sdata, &local->interfaces, list) { |
1832 | if (!ieee80211_sdata_running(sdata)) | |
1833 | continue; | |
1834 | ieee80211_assign_chanctx(local, sdata); | |
1835 | } | |
6352c87f | 1836 | |
7df180f7 ZG |
1837 | sdata = rtnl_dereference(local->monitor_sdata); |
1838 | if (sdata && ieee80211_sdata_running(sdata)) | |
1839 | ieee80211_assign_chanctx(local, sdata); | |
1840 | } | |
fe5f2559 | 1841 | |
f2753ddb | 1842 | /* add STAs back */ |
34e89507 JB |
1843 | mutex_lock(&local->sta_mtx); |
1844 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1845 | enum ieee80211_sta_state state; |
f09603a2 | 1846 | |
2e8d397e AN |
1847 | if (!sta->uploaded) |
1848 | continue; | |
1849 | ||
1850 | /* AP-mode stations will be added later */ | |
1851 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1852 | continue; | |
1853 | ||
1854 | for (state = IEEE80211_STA_NOTEXIST; | |
1855 | state < sta->sta_state; state++) | |
1856 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1857 | state + 1)); | |
f2753ddb | 1858 | } |
34e89507 | 1859 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1860 | |
2683d65b | 1861 | /* reconfigure tx conf */ |
54bcbc69 JB |
1862 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1863 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1864 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1865 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1866 | !ieee80211_sdata_running(sdata)) | |
1867 | continue; | |
f6f3def3 | 1868 | |
54bcbc69 JB |
1869 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1870 | drv_conf_tx(local, sdata, i, | |
1871 | &sdata->tx_conf[i]); | |
1872 | } | |
f6f3def3 | 1873 | } |
2683d65b | 1874 | |
f2753ddb JB |
1875 | /* reconfigure hardware */ |
1876 | ieee80211_hw_config(local, ~0); | |
1877 | ||
f2753ddb | 1878 | ieee80211_configure_filter(local); |
f2753ddb JB |
1879 | |
1880 | /* Finally also reconfigure all the BSS information */ | |
1881 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1882 | u32 changed; |
1883 | ||
9607e6b6 | 1884 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1885 | continue; |
ac8dd506 JB |
1886 | |
1887 | /* common change flags for all interface types */ | |
1888 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1889 | BSS_CHANGED_ERP_PREAMBLE | | |
1890 | BSS_CHANGED_ERP_SLOT | | |
1891 | BSS_CHANGED_HT | | |
1892 | BSS_CHANGED_BASIC_RATES | | |
1893 | BSS_CHANGED_BEACON_INT | | |
1894 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1895 | BSS_CHANGED_CQM | |
55de47f6 | 1896 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1897 | BSS_CHANGED_IDLE | |
1898 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1899 | |
f2753ddb JB |
1900 | switch (sdata->vif.type) { |
1901 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1902 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1903 | BSS_CHANGED_ARP_FILTER | |
1904 | BSS_CHANGED_PS; | |
c65dd147 | 1905 | |
989c6505 AB |
1906 | /* Re-send beacon info report to the driver */ |
1907 | if (sdata->u.mgd.have_beacon) | |
1908 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1909 | |
8d61ffa5 | 1910 | sdata_lock(sdata); |
ac8dd506 | 1911 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1912 | sdata_unlock(sdata); |
ac8dd506 | 1913 | break; |
6e0bd6c3 | 1914 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1915 | changed |= BSS_CHANGED_OCB; |
1916 | ieee80211_bss_info_change_notify(sdata, changed); | |
6e0bd6c3 | 1917 | break; |
f2753ddb | 1918 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1919 | changed |= BSS_CHANGED_IBSS; |
1920 | /* fall through */ | |
f2753ddb | 1921 | case NL80211_IFTYPE_AP: |
339afbf4 | 1922 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1923 | |
1041638f | 1924 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1925 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1926 | ||
1041638f JB |
1927 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1928 | drv_start_ap(local, sdata); | |
1929 | } | |
1930 | ||
7827493b | 1931 | /* fall through */ |
f2753ddb | 1932 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1933 | if (sdata->vif.bss_conf.enable_beacon) { |
1934 | changed |= BSS_CHANGED_BEACON | | |
1935 | BSS_CHANGED_BEACON_ENABLED; | |
1936 | ieee80211_bss_info_change_notify(sdata, changed); | |
1937 | } | |
f2753ddb JB |
1938 | break; |
1939 | case NL80211_IFTYPE_WDS: | |
f2753ddb JB |
1940 | case NL80211_IFTYPE_AP_VLAN: |
1941 | case NL80211_IFTYPE_MONITOR: | |
98104fde | 1942 | case NL80211_IFTYPE_P2P_DEVICE: |
b205786e | 1943 | /* nothing to do */ |
f142c6b9 | 1944 | break; |
f2753ddb | 1945 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1946 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1947 | case NL80211_IFTYPE_P2P_CLIENT: |
1948 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1949 | WARN_ON(1); |
1950 | break; | |
1951 | } | |
1952 | } | |
1953 | ||
8e1b23b9 ES |
1954 | ieee80211_recalc_ps(local, -1); |
1955 | ||
6e1b1b24 EP |
1956 | /* |
1957 | * The sta might be in psm against the ap (e.g. because | |
1958 | * this was the state before a hw restart), so we | |
1959 | * explicitly send a null packet in order to make sure | |
1960 | * it'll sync against the ap (and get out of psm). | |
1961 | */ | |
1962 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1963 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1964 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1965 | continue; | |
20f544ee JB |
1966 | if (!sdata->u.mgd.associated) |
1967 | continue; | |
6e1b1b24 EP |
1968 | |
1969 | ieee80211_send_nullfunc(local, sdata, 0); | |
1970 | } | |
1971 | } | |
1972 | ||
2e8d397e AN |
1973 | /* APs are now beaconing, add back stations */ |
1974 | mutex_lock(&local->sta_mtx); | |
1975 | list_for_each_entry(sta, &local->sta_list, list) { | |
1976 | enum ieee80211_sta_state state; | |
1977 | ||
1978 | if (!sta->uploaded) | |
1979 | continue; | |
1980 | ||
1981 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1982 | continue; | |
1983 | ||
1984 | for (state = IEEE80211_STA_NOTEXIST; | |
1985 | state < sta->sta_state; state++) | |
1986 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1987 | state + 1)); | |
1988 | } | |
1989 | mutex_unlock(&local->sta_mtx); | |
1990 | ||
7b21aea0 | 1991 | /* add back keys */ |
f9dca80b MK |
1992 | list_for_each_entry(sdata, &local->interfaces, list) |
1993 | ieee80211_reset_crypto_tx_tailroom(sdata); | |
1994 | ||
7b21aea0 ES |
1995 | list_for_each_entry(sdata, &local->interfaces, list) |
1996 | if (ieee80211_sdata_running(sdata)) | |
1997 | ieee80211_enable_keys(sdata); | |
1998 | ||
c6209488 | 1999 | wake_up: |
04800ada AN |
2000 | local->in_reconfig = false; |
2001 | barrier(); | |
2002 | ||
3c3e21e7 JB |
2003 | if (local->monitors == local->open_count && local->monitors > 0) |
2004 | ieee80211_add_virtual_monitor(local); | |
2005 | ||
2a419056 JB |
2006 | /* |
2007 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
2008 | * sessions can be established after a resume. | |
2009 | * | |
2010 | * Also tear down aggregation sessions since reconfiguring | |
2011 | * them in a hardware restart scenario is not easily done | |
2012 | * right now, and the hardware will have lost information | |
2013 | * about the sessions, but we and the AP still think they | |
2014 | * are active. This is really a workaround though. | |
2015 | */ | |
30686bf7 | 2016 | if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { |
2a419056 JB |
2017 | mutex_lock(&local->sta_mtx); |
2018 | ||
2019 | list_for_each_entry(sta, &local->sta_list, list) { | |
27392719 EP |
2020 | if (!local->resuming) |
2021 | ieee80211_sta_tear_down_BA_sessions( | |
2022 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 2023 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 2024 | } |
2a419056 JB |
2025 | |
2026 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 2027 | } |
74e2bd1f | 2028 | |
445ea4e8 | 2029 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
2030 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
2031 | false); | |
f2753ddb | 2032 | |
32769814 AN |
2033 | /* |
2034 | * Reconfigure sched scan if it was interrupted by FW restart or | |
2035 | * suspend. | |
2036 | */ | |
2037 | mutex_lock(&local->mtx); | |
2038 | sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, | |
2039 | lockdep_is_held(&local->mtx)); | |
6ea0a69c JB |
2040 | sched_scan_req = rcu_dereference_protected(local->sched_scan_req, |
2041 | lockdep_is_held(&local->mtx)); | |
2042 | if (sched_scan_sdata && sched_scan_req) | |
32769814 AN |
2043 | /* |
2044 | * Sched scan stopped, but we don't want to report it. Instead, | |
2045 | * we're trying to reschedule. | |
2046 | */ | |
2047 | if (__ieee80211_request_sched_scan_start(sched_scan_sdata, | |
6ea0a69c | 2048 | sched_scan_req)) |
32769814 AN |
2049 | sched_scan_stopped = true; |
2050 | mutex_unlock(&local->mtx); | |
2051 | ||
2052 | if (sched_scan_stopped) | |
e669ba2d | 2053 | cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); |
32769814 | 2054 | |
5bb644a0 JB |
2055 | /* |
2056 | * If this is for hw restart things are still running. | |
2057 | * We may want to change that later, however. | |
2058 | */ | |
b0485e9f | 2059 | if (local->open_count && (!suspended || reconfig_due_to_wowlan)) |
cf2c92d8 | 2060 | drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); |
8f21b0ad | 2061 | |
b0485e9f | 2062 | if (!suspended) |
5bb644a0 JB |
2063 | return 0; |
2064 | ||
2065 | #ifdef CONFIG_PM | |
ceb99fe0 | 2066 | /* first set suspended false, then resuming */ |
5bb644a0 | 2067 | local->suspended = false; |
ceb99fe0 JB |
2068 | mb(); |
2069 | local->resuming = false; | |
5bb644a0 | 2070 | |
9120d94e LC |
2071 | /* It's possible that we don't handle the scan completion in |
2072 | * time during suspend, so if it's still marked as completed | |
2073 | * here, queue the work and flush it to clean things up. | |
2074 | * Instead of calling the worker function directly here, we | |
2075 | * really queue it to avoid potential races with other flows | |
2076 | * scheduling the same work. | |
2077 | */ | |
2078 | if (test_bit(SCAN_COMPLETED, &local->scanning)) { | |
2079 | ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0); | |
2080 | flush_delayed_work(&local->scan_work); | |
2081 | } | |
2082 | ||
0f8b8245 | 2083 | if (local->open_count && !reconfig_due_to_wowlan) |
cf2c92d8 EP |
2084 | drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); |
2085 | ||
b8360ab8 JB |
2086 | list_for_each_entry(sdata, &local->interfaces, list) { |
2087 | if (!ieee80211_sdata_running(sdata)) | |
2088 | continue; | |
2089 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2090 | ieee80211_sta_restart(sdata); | |
2091 | } | |
2092 | ||
26d59535 | 2093 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
2094 | #else |
2095 | WARN_ON(1); | |
2096 | #endif | |
d43c6b6e | 2097 | |
f2753ddb JB |
2098 | return 0; |
2099 | } | |
42935eca | 2100 | |
95acac61 JB |
2101 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
2102 | { | |
2103 | struct ieee80211_sub_if_data *sdata; | |
2104 | struct ieee80211_local *local; | |
2105 | struct ieee80211_key *key; | |
2106 | ||
2107 | if (WARN_ON(!vif)) | |
2108 | return; | |
2109 | ||
2110 | sdata = vif_to_sdata(vif); | |
2111 | local = sdata->local; | |
2112 | ||
2113 | if (WARN_ON(!local->resuming)) | |
2114 | return; | |
2115 | ||
2116 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
2117 | return; | |
2118 | ||
2119 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
2120 | ||
2121 | mutex_lock(&local->key_mtx); | |
2122 | list_for_each_entry(key, &sdata->key_list, list) | |
2123 | key->flags |= KEY_FLAG_TAINTED; | |
2124 | mutex_unlock(&local->key_mtx); | |
2125 | } | |
2126 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
2127 | ||
04ecd257 | 2128 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 2129 | { |
04ecd257 JB |
2130 | struct ieee80211_local *local = sdata->local; |
2131 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2132 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 2133 | |
04ecd257 | 2134 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 2135 | |
04ecd257 JB |
2136 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
2137 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 2138 | |
04ecd257 | 2139 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 2140 | goto unlock; |
0f78231b | 2141 | |
04ecd257 JB |
2142 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
2143 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 2144 | unlock: |
04ecd257 | 2145 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 2146 | } |
8e664fb3 | 2147 | |
21f659bf EP |
2148 | void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) |
2149 | { | |
2150 | struct ieee80211_local *local = sdata->local; | |
2151 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2152 | struct ieee80211_chanctx *chanctx; | |
2153 | ||
2154 | mutex_lock(&local->chanctx_mtx); | |
2155 | ||
2156 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
2157 | lockdep_is_held(&local->chanctx_mtx)); | |
2158 | ||
2159 | if (WARN_ON_ONCE(!chanctx_conf)) | |
2160 | goto unlock; | |
2161 | ||
2162 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); | |
2163 | ieee80211_recalc_chanctx_min_def(local, chanctx); | |
2164 | unlock: | |
2165 | mutex_unlock(&local->chanctx_mtx); | |
2166 | } | |
2167 | ||
8e664fb3 JB |
2168 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) |
2169 | { | |
2170 | size_t pos = offset; | |
2171 | ||
2172 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
2173 | pos += 2 + ies[pos + 1]; | |
2174 | ||
2175 | return pos; | |
2176 | } | |
615f7b9b MV |
2177 | |
2178 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
2179 | int rssi_min_thold, | |
2180 | int rssi_max_thold) | |
2181 | { | |
2182 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
2183 | ||
2184 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2185 | return; | |
2186 | ||
2187 | /* | |
2188 | * Scale up threshold values before storing it, as the RSSI averaging | |
2189 | * algorithm uses a scaled up value as well. Change this scaling | |
2190 | * factor if the RSSI averaging algorithm changes. | |
2191 | */ | |
2192 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
2193 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
2194 | } | |
2195 | ||
2196 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
2197 | int rssi_min_thold, | |
2198 | int rssi_max_thold) | |
2199 | { | |
2200 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2201 | ||
2202 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
2203 | rssi_min_thold > rssi_max_thold); | |
2204 | ||
2205 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
2206 | rssi_max_thold); | |
2207 | } | |
2208 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
2209 | ||
2210 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
2211 | { | |
2212 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2213 | ||
2214 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
2215 | } | |
2216 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 2217 | |
ef96a842 | 2218 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
2219 | u16 cap) |
2220 | { | |
2221 | __le16 tmp; | |
2222 | ||
2223 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
2224 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
2225 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
2226 | ||
2227 | /* capability flags */ | |
2228 | tmp = cpu_to_le16(cap); | |
2229 | memcpy(pos, &tmp, sizeof(u16)); | |
2230 | pos += sizeof(u16); | |
2231 | ||
2232 | /* AMPDU parameters */ | |
ef96a842 BG |
2233 | *pos++ = ht_cap->ampdu_factor | |
2234 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
2235 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
2236 | ||
2237 | /* MCS set */ | |
ef96a842 BG |
2238 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
2239 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
2240 | |
2241 | /* extended capabilities */ | |
2242 | pos += sizeof(__le16); | |
2243 | ||
2244 | /* BF capabilities */ | |
2245 | pos += sizeof(__le32); | |
2246 | ||
2247 | /* antenna selection */ | |
2248 | pos += sizeof(u8); | |
2249 | ||
2250 | return pos; | |
2251 | } | |
2252 | ||
ba0afa2f | 2253 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 2254 | u32 cap) |
ba0afa2f MP |
2255 | { |
2256 | __le32 tmp; | |
2257 | ||
2258 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
2259 | *pos++ = sizeof(struct ieee80211_vht_cap); |
2260 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
2261 | |
2262 | /* capability flags */ | |
2263 | tmp = cpu_to_le32(cap); | |
2264 | memcpy(pos, &tmp, sizeof(u32)); | |
2265 | pos += sizeof(u32); | |
2266 | ||
2267 | /* VHT MCS set */ | |
2268 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
2269 | pos += sizeof(vht_cap->vht_mcs); | |
2270 | ||
2271 | return pos; | |
2272 | } | |
2273 | ||
074d46d1 | 2274 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 2275 | const struct cfg80211_chan_def *chandef, |
431e3154 | 2276 | u16 prot_mode) |
42e7aa77 | 2277 | { |
074d46d1 | 2278 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 2279 | /* Build HT Information */ |
074d46d1 JB |
2280 | *pos++ = WLAN_EID_HT_OPERATION; |
2281 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
2282 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
2283 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
2284 | chandef->chan->center_freq); | |
2285 | switch (chandef->width) { | |
2286 | case NL80211_CHAN_WIDTH_160: | |
2287 | case NL80211_CHAN_WIDTH_80P80: | |
2288 | case NL80211_CHAN_WIDTH_80: | |
2289 | case NL80211_CHAN_WIDTH_40: | |
2290 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
2291 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2292 | else | |
2293 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 2294 | break; |
42e7aa77 | 2295 | default: |
074d46d1 | 2296 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
2297 | break; |
2298 | } | |
aee286c2 | 2299 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
2300 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
2301 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 2302 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 2303 | |
431e3154 | 2304 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 2305 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
2306 | |
2307 | /* It seems that Basic MCS set and Supported MCS set | |
2308 | are identical for the first 10 bytes */ | |
074d46d1 JB |
2309 | memset(&ht_oper->basic_set, 0, 16); |
2310 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 2311 | |
074d46d1 | 2312 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
2313 | } |
2314 | ||
fb28ec0c AN |
2315 | u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
2316 | const struct cfg80211_chan_def *chandef) | |
2317 | { | |
2318 | struct ieee80211_vht_operation *vht_oper; | |
2319 | ||
2320 | *pos++ = WLAN_EID_VHT_OPERATION; | |
2321 | *pos++ = sizeof(struct ieee80211_vht_operation); | |
2322 | vht_oper = (struct ieee80211_vht_operation *)pos; | |
2323 | vht_oper->center_freq_seg1_idx = ieee80211_frequency_to_channel( | |
2324 | chandef->center_freq1); | |
2325 | if (chandef->center_freq2) | |
2326 | vht_oper->center_freq_seg2_idx = | |
2327 | ieee80211_frequency_to_channel(chandef->center_freq2); | |
f020ae40 CYY |
2328 | else |
2329 | vht_oper->center_freq_seg2_idx = 0x00; | |
fb28ec0c AN |
2330 | |
2331 | switch (chandef->width) { | |
2332 | case NL80211_CHAN_WIDTH_160: | |
2333 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ; | |
2334 | break; | |
2335 | case NL80211_CHAN_WIDTH_80P80: | |
2336 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ; | |
2337 | break; | |
2338 | case NL80211_CHAN_WIDTH_80: | |
2339 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; | |
2340 | break; | |
2341 | default: | |
2342 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; | |
2343 | break; | |
2344 | } | |
2345 | ||
2346 | /* don't require special VHT peer rates */ | |
2347 | vht_oper->basic_mcs_set = cpu_to_le16(0xffff); | |
2348 | ||
2349 | return pos + sizeof(struct ieee80211_vht_operation); | |
2350 | } | |
2351 | ||
4bf88530 | 2352 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 2353 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 2354 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
2355 | { |
2356 | enum nl80211_channel_type channel_type; | |
2357 | ||
4bf88530 JB |
2358 | if (!ht_oper) { |
2359 | cfg80211_chandef_create(chandef, control_chan, | |
2360 | NL80211_CHAN_NO_HT); | |
2361 | return; | |
2362 | } | |
42e7aa77 | 2363 | |
074d46d1 | 2364 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2365 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2366 | channel_type = NL80211_CHAN_HT20; | |
2367 | break; | |
2368 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2369 | channel_type = NL80211_CHAN_HT40PLUS; | |
2370 | break; | |
2371 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2372 | channel_type = NL80211_CHAN_HT40MINUS; | |
2373 | break; | |
2374 | default: | |
2375 | channel_type = NL80211_CHAN_NO_HT; | |
2376 | } | |
2377 | ||
4bf88530 | 2378 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
2379 | } |
2380 | ||
abcff6ef JD |
2381 | void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, |
2382 | const struct ieee80211_vht_operation *oper, | |
2383 | struct cfg80211_chan_def *chandef) | |
2384 | { | |
2385 | if (!oper) | |
2386 | return; | |
2387 | ||
2388 | chandef->chan = control_chan; | |
2389 | ||
2390 | switch (oper->chan_width) { | |
2391 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
2392 | break; | |
2393 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
2394 | chandef->width = NL80211_CHAN_WIDTH_80; | |
2395 | break; | |
2396 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
2397 | chandef->width = NL80211_CHAN_WIDTH_160; | |
2398 | break; | |
2399 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
2400 | chandef->width = NL80211_CHAN_WIDTH_80P80; | |
2401 | break; | |
2402 | default: | |
2403 | break; | |
2404 | } | |
2405 | ||
2406 | chandef->center_freq1 = | |
2407 | ieee80211_channel_to_frequency(oper->center_freq_seg1_idx, | |
2408 | control_chan->band); | |
2409 | chandef->center_freq2 = | |
2410 | ieee80211_channel_to_frequency(oper->center_freq_seg2_idx, | |
2411 | control_chan->band); | |
2412 | } | |
2413 | ||
2103dec1 SW |
2414 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2415 | const struct ieee80211_supported_band *sband, | |
2416 | const u8 *srates, int srates_len, u32 *rates) | |
2417 | { | |
2418 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2419 | int shift = ieee80211_chandef_get_shift(chandef); | |
2420 | struct ieee80211_rate *br; | |
2421 | int brate, rate, i, j, count = 0; | |
2422 | ||
2423 | *rates = 0; | |
2424 | ||
2425 | for (i = 0; i < srates_len; i++) { | |
2426 | rate = srates[i] & 0x7f; | |
2427 | ||
2428 | for (j = 0; j < sband->n_bitrates; j++) { | |
2429 | br = &sband->bitrates[j]; | |
2430 | if ((rate_flags & br->flags) != rate_flags) | |
2431 | continue; | |
2432 | ||
2433 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2434 | if (brate == rate) { | |
2435 | *rates |= BIT(j); | |
2436 | count++; | |
2437 | break; | |
2438 | } | |
2439 | } | |
2440 | } | |
2441 | return count; | |
2442 | } | |
2443 | ||
fc8a7321 | 2444 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2445 | struct sk_buff *skb, bool need_basic, |
2446 | enum ieee80211_band band) | |
768db343 | 2447 | { |
768db343 AN |
2448 | struct ieee80211_local *local = sdata->local; |
2449 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2450 | int rate, shift; |
768db343 | 2451 | u8 i, rates, *pos; |
fc8a7321 | 2452 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2453 | u32 rate_flags; |
768db343 | 2454 | |
2103dec1 SW |
2455 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2456 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2457 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2458 | rates = 0; |
2459 | for (i = 0; i < sband->n_bitrates; i++) { | |
2460 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2461 | continue; | |
2462 | rates++; | |
2463 | } | |
768db343 AN |
2464 | if (rates > 8) |
2465 | rates = 8; | |
2466 | ||
2467 | if (skb_tailroom(skb) < rates + 2) | |
2468 | return -ENOMEM; | |
2469 | ||
2470 | pos = skb_put(skb, rates + 2); | |
2471 | *pos++ = WLAN_EID_SUPP_RATES; | |
2472 | *pos++ = rates; | |
2473 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2474 | u8 basic = 0; |
2103dec1 SW |
2475 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2476 | continue; | |
2477 | ||
657c3e0c AN |
2478 | if (need_basic && basic_rates & BIT(i)) |
2479 | basic = 0x80; | |
768db343 | 2480 | rate = sband->bitrates[i].bitrate; |
2103dec1 SW |
2481 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2482 | 5 * (1 << shift)); | |
2483 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2484 | } |
2485 | ||
2486 | return 0; | |
2487 | } | |
2488 | ||
fc8a7321 | 2489 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2490 | struct sk_buff *skb, bool need_basic, |
2491 | enum ieee80211_band band) | |
768db343 | 2492 | { |
768db343 AN |
2493 | struct ieee80211_local *local = sdata->local; |
2494 | struct ieee80211_supported_band *sband; | |
cc63ec76 | 2495 | int rate, shift; |
768db343 | 2496 | u8 i, exrates, *pos; |
fc8a7321 | 2497 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2498 | u32 rate_flags; |
2499 | ||
2500 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2501 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2502 | |
6b77863b | 2503 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2504 | exrates = 0; |
2505 | for (i = 0; i < sband->n_bitrates; i++) { | |
2506 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2507 | continue; | |
2508 | exrates++; | |
2509 | } | |
2510 | ||
768db343 AN |
2511 | if (exrates > 8) |
2512 | exrates -= 8; | |
2513 | else | |
2514 | exrates = 0; | |
2515 | ||
2516 | if (skb_tailroom(skb) < exrates + 2) | |
2517 | return -ENOMEM; | |
2518 | ||
2519 | if (exrates) { | |
2520 | pos = skb_put(skb, exrates + 2); | |
2521 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2522 | *pos++ = exrates; | |
2523 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c | 2524 | u8 basic = 0; |
2103dec1 SW |
2525 | if ((rate_flags & sband->bitrates[i].flags) |
2526 | != rate_flags) | |
2527 | continue; | |
657c3e0c AN |
2528 | if (need_basic && basic_rates & BIT(i)) |
2529 | basic = 0x80; | |
2103dec1 SW |
2530 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2531 | 5 * (1 << shift)); | |
2532 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2533 | } |
2534 | } | |
2535 | return 0; | |
2536 | } | |
1dae27f8 WYG |
2537 | |
2538 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2539 | { | |
2540 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2541 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2542 | ||
be6bcabc WYG |
2543 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2544 | /* non-managed type inferfaces */ | |
2545 | return 0; | |
2546 | } | |
338c17ae | 2547 | return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); |
1dae27f8 | 2548 | } |
0d8a0a17 | 2549 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2550 | |
2551 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2552 | { | |
2553 | if (!mcs) | |
2554 | return 1; | |
2555 | ||
2556 | /* TODO: consider rx_highest */ | |
2557 | ||
2558 | if (mcs->rx_mask[3]) | |
2559 | return 4; | |
2560 | if (mcs->rx_mask[2]) | |
2561 | return 3; | |
2562 | if (mcs->rx_mask[1]) | |
2563 | return 2; | |
2564 | return 1; | |
2565 | } | |
f4bda337 TP |
2566 | |
2567 | /** | |
2568 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2569 | * @local: mac80211 hw info struct | |
2570 | * @status: RX status | |
2571 | * @mpdu_len: total MPDU length (including FCS) | |
2572 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2573 | * | |
2574 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2575 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2576 | * the timestamp to TSF at beginning of MPDU reception. | |
2577 | */ | |
2578 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2579 | struct ieee80211_rx_status *status, | |
2580 | unsigned int mpdu_len, | |
2581 | unsigned int mpdu_offset) | |
2582 | { | |
2583 | u64 ts = status->mactime; | |
2584 | struct rate_info ri; | |
2585 | u16 rate; | |
2586 | ||
2587 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2588 | return 0; | |
2589 | ||
2590 | memset(&ri, 0, sizeof(ri)); | |
2591 | ||
2592 | /* Fill cfg80211 rate info */ | |
2593 | if (status->flag & RX_FLAG_HT) { | |
2594 | ri.mcs = status->rate_idx; | |
2595 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2596 | if (status->flag & RX_FLAG_40MHZ) | |
b51f3bee JB |
2597 | ri.bw = RATE_INFO_BW_40; |
2598 | else | |
2599 | ri.bw = RATE_INFO_BW_20; | |
f4bda337 TP |
2600 | if (status->flag & RX_FLAG_SHORT_GI) |
2601 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2602 | } else if (status->flag & RX_FLAG_VHT) { |
2603 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2604 | ri.mcs = status->rate_idx; | |
2605 | ri.nss = status->vht_nss; | |
2606 | if (status->flag & RX_FLAG_40MHZ) | |
b51f3bee JB |
2607 | ri.bw = RATE_INFO_BW_40; |
2608 | else if (status->vht_flag & RX_VHT_FLAG_80MHZ) | |
2609 | ri.bw = RATE_INFO_BW_80; | |
2610 | else if (status->vht_flag & RX_VHT_FLAG_160MHZ) | |
2611 | ri.bw = RATE_INFO_BW_160; | |
2612 | else | |
2613 | ri.bw = RATE_INFO_BW_20; | |
5614618e JB |
2614 | if (status->flag & RX_FLAG_SHORT_GI) |
2615 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2616 | } else { |
2617 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2618 | int shift = 0; |
2619 | int bitrate; | |
2620 | ||
b51f3bee | 2621 | if (status->flag & RX_FLAG_10MHZ) { |
2103dec1 | 2622 | shift = 1; |
b51f3bee JB |
2623 | ri.bw = RATE_INFO_BW_10; |
2624 | } else if (status->flag & RX_FLAG_5MHZ) { | |
2103dec1 | 2625 | shift = 2; |
b51f3bee JB |
2626 | ri.bw = RATE_INFO_BW_5; |
2627 | } else { | |
2628 | ri.bw = RATE_INFO_BW_20; | |
2629 | } | |
f4bda337 TP |
2630 | |
2631 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2632 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2633 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4bda337 TP |
2634 | } |
2635 | ||
2636 | rate = cfg80211_calculate_bitrate(&ri); | |
d86aa4f8 JB |
2637 | if (WARN_ONCE(!rate, |
2638 | "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n", | |
2639 | status->flag, status->rate_idx, status->vht_nss)) | |
2640 | return 0; | |
f4bda337 TP |
2641 | |
2642 | /* rewind from end of MPDU */ | |
2643 | if (status->flag & RX_FLAG_MACTIME_END) | |
2644 | ts -= mpdu_len * 8 * 10 / rate; | |
2645 | ||
2646 | ts += mpdu_offset * 8 * 10 / rate; | |
2647 | ||
2648 | return ts; | |
2649 | } | |
164eb02d SW |
2650 | |
2651 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2652 | { | |
2653 | struct ieee80211_sub_if_data *sdata; | |
d2859df5 | 2654 | struct cfg80211_chan_def chandef; |
164eb02d | 2655 | |
34a3740d | 2656 | mutex_lock(&local->mtx); |
164eb02d SW |
2657 | mutex_lock(&local->iflist_mtx); |
2658 | list_for_each_entry(sdata, &local->interfaces, list) { | |
34a3740d JB |
2659 | /* it might be waiting for the local->mtx, but then |
2660 | * by the time it gets it, sdata->wdev.cac_started | |
2661 | * will no longer be true | |
2662 | */ | |
2663 | cancel_delayed_work(&sdata->dfs_cac_timer_work); | |
164eb02d SW |
2664 | |
2665 | if (sdata->wdev.cac_started) { | |
d2859df5 | 2666 | chandef = sdata->vif.bss_conf.chandef; |
164eb02d SW |
2667 | ieee80211_vif_release_channel(sdata); |
2668 | cfg80211_cac_event(sdata->dev, | |
d2859df5 | 2669 | &chandef, |
164eb02d SW |
2670 | NL80211_RADAR_CAC_ABORTED, |
2671 | GFP_KERNEL); | |
2672 | } | |
2673 | } | |
2674 | mutex_unlock(&local->iflist_mtx); | |
34a3740d | 2675 | mutex_unlock(&local->mtx); |
164eb02d SW |
2676 | } |
2677 | ||
2678 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2679 | { | |
2680 | struct ieee80211_local *local = | |
2681 | container_of(work, struct ieee80211_local, radar_detected_work); | |
84a3d1c9 | 2682 | struct cfg80211_chan_def chandef = local->hw.conf.chandef; |
486cf4c0 MK |
2683 | struct ieee80211_chanctx *ctx; |
2684 | int num_chanctx = 0; | |
2685 | ||
2686 | mutex_lock(&local->chanctx_mtx); | |
2687 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
2688 | if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) | |
2689 | continue; | |
2690 | ||
2691 | num_chanctx++; | |
2692 | chandef = ctx->conf.def; | |
2693 | } | |
2694 | mutex_unlock(&local->chanctx_mtx); | |
164eb02d SW |
2695 | |
2696 | ieee80211_dfs_cac_cancel(local); | |
2697 | ||
486cf4c0 MK |
2698 | if (num_chanctx > 1) |
2699 | /* XXX: multi-channel is not supported yet */ | |
164eb02d | 2700 | WARN_ON(1); |
84a3d1c9 | 2701 | else |
164eb02d | 2702 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
164eb02d SW |
2703 | } |
2704 | ||
2705 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2706 | { | |
2707 | struct ieee80211_local *local = hw_to_local(hw); | |
2708 | ||
2709 | trace_api_radar_detected(local); | |
2710 | ||
2711 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2712 | } | |
2713 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2714 | |
2715 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2716 | { | |
2717 | u32 ret; | |
2718 | int tmp; | |
2719 | ||
2720 | switch (c->width) { | |
2721 | case NL80211_CHAN_WIDTH_20: | |
2722 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2723 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2724 | break; | |
2725 | case NL80211_CHAN_WIDTH_40: | |
2726 | c->width = NL80211_CHAN_WIDTH_20; | |
2727 | c->center_freq1 = c->chan->center_freq; | |
2728 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2729 | IEEE80211_STA_DISABLE_VHT; | |
2730 | break; | |
2731 | case NL80211_CHAN_WIDTH_80: | |
2732 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2733 | /* n_P40 */ | |
2734 | tmp /= 2; | |
2735 | /* freq_P40 */ | |
2736 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2737 | c->width = NL80211_CHAN_WIDTH_40; | |
2738 | ret = IEEE80211_STA_DISABLE_VHT; | |
2739 | break; | |
2740 | case NL80211_CHAN_WIDTH_80P80: | |
2741 | c->center_freq2 = 0; | |
2742 | c->width = NL80211_CHAN_WIDTH_80; | |
2743 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2744 | IEEE80211_STA_DISABLE_160MHZ; | |
2745 | break; | |
2746 | case NL80211_CHAN_WIDTH_160: | |
2747 | /* n_P20 */ | |
2748 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2749 | /* n_P80 */ | |
2750 | tmp /= 4; | |
2751 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2752 | c->width = NL80211_CHAN_WIDTH_80; | |
2753 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2754 | IEEE80211_STA_DISABLE_160MHZ; | |
2755 | break; | |
2756 | default: | |
2757 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2758 | WARN_ON_ONCE(1); | |
2759 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2760 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2761 | break; | |
2762 | case NL80211_CHAN_WIDTH_5: | |
2763 | case NL80211_CHAN_WIDTH_10: | |
2764 | WARN_ON_ONCE(1); | |
2765 | /* keep c->width */ | |
2766 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2767 | break; | |
2768 | } | |
2769 | ||
2770 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2771 | ||
2772 | return ret; | |
2773 | } | |
687da132 EG |
2774 | |
2775 | /* | |
2776 | * Returns true if smps_mode_new is strictly more restrictive than | |
2777 | * smps_mode_old. | |
2778 | */ | |
2779 | bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, | |
2780 | enum ieee80211_smps_mode smps_mode_new) | |
2781 | { | |
2782 | if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || | |
2783 | smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) | |
2784 | return false; | |
2785 | ||
2786 | switch (smps_mode_old) { | |
2787 | case IEEE80211_SMPS_STATIC: | |
2788 | return false; | |
2789 | case IEEE80211_SMPS_DYNAMIC: | |
2790 | return smps_mode_new == IEEE80211_SMPS_STATIC; | |
2791 | case IEEE80211_SMPS_OFF: | |
2792 | return smps_mode_new != IEEE80211_SMPS_OFF; | |
2793 | default: | |
2794 | WARN_ON(1); | |
2795 | } | |
2796 | ||
2797 | return false; | |
2798 | } | |
c6da674a CYY |
2799 | |
2800 | int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, | |
2801 | struct cfg80211_csa_settings *csa_settings) | |
2802 | { | |
2803 | struct sk_buff *skb; | |
2804 | struct ieee80211_mgmt *mgmt; | |
2805 | struct ieee80211_local *local = sdata->local; | |
2806 | int freq; | |
2807 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + | |
2808 | sizeof(mgmt->u.action.u.chan_switch); | |
2809 | u8 *pos; | |
2810 | ||
2811 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
2812 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) | |
2813 | return -EOPNOTSUPP; | |
2814 | ||
2815 | skb = dev_alloc_skb(local->tx_headroom + hdr_len + | |
2816 | 5 + /* channel switch announcement element */ | |
2817 | 3 + /* secondary channel offset element */ | |
2818 | 8); /* mesh channel switch parameters element */ | |
2819 | if (!skb) | |
2820 | return -ENOMEM; | |
2821 | ||
2822 | skb_reserve(skb, local->tx_headroom); | |
2823 | mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); | |
2824 | memset(mgmt, 0, hdr_len); | |
2825 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2826 | IEEE80211_STYPE_ACTION); | |
2827 | ||
2828 | eth_broadcast_addr(mgmt->da); | |
2829 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
2830 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2831 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); | |
2832 | } else { | |
2833 | struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; | |
2834 | memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); | |
2835 | } | |
2836 | mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
2837 | mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; | |
2838 | pos = skb_put(skb, 5); | |
2839 | *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ | |
2840 | *pos++ = 3; /* IE length */ | |
2841 | *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ | |
2842 | freq = csa_settings->chandef.chan->center_freq; | |
2843 | *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ | |
2844 | *pos++ = csa_settings->count; /* count */ | |
2845 | ||
2846 | if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { | |
2847 | enum nl80211_channel_type ch_type; | |
2848 | ||
2849 | skb_put(skb, 3); | |
2850 | *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ | |
2851 | *pos++ = 1; /* IE length */ | |
2852 | ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); | |
2853 | if (ch_type == NL80211_CHAN_HT40PLUS) | |
2854 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2855 | else | |
2856 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2857 | } | |
2858 | ||
2859 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2860 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
c6da674a CYY |
2861 | |
2862 | skb_put(skb, 8); | |
2863 | *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ | |
2864 | *pos++ = 6; /* IE length */ | |
2865 | *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ | |
2866 | *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ | |
2867 | *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; | |
2868 | *pos++ |= csa_settings->block_tx ? | |
2869 | WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; | |
2870 | put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ | |
2871 | pos += 2; | |
ca91dc97 | 2872 | put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
c6da674a | 2873 | pos += 2; |
c6da674a CYY |
2874 | } |
2875 | ||
2876 | ieee80211_tx_skb(sdata, skb); | |
2877 | return 0; | |
2878 | } | |
2475b1cc MS |
2879 | |
2880 | bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) | |
2881 | { | |
2882 | return !(cs == NULL || cs->cipher == 0 || | |
2883 | cs->hdr_len < cs->pn_len + cs->pn_off || | |
2884 | cs->hdr_len <= cs->key_idx_off || | |
2885 | cs->key_idx_shift > 7 || | |
2886 | cs->key_idx_mask == 0); | |
2887 | } | |
2888 | ||
2889 | bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) | |
2890 | { | |
2891 | int i; | |
2892 | ||
2893 | /* Ensure we have enough iftype bitmap space for all iftype values */ | |
2894 | WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); | |
2895 | ||
2896 | for (i = 0; i < n; i++) | |
2897 | if (!ieee80211_cs_valid(&cs[i])) | |
2898 | return false; | |
2899 | ||
2900 | return true; | |
2901 | } | |
2902 | ||
2903 | const struct ieee80211_cipher_scheme * | |
2904 | ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, | |
2905 | enum nl80211_iftype iftype) | |
2906 | { | |
2907 | const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; | |
2908 | int n = local->hw.n_cipher_schemes; | |
2909 | int i; | |
2910 | const struct ieee80211_cipher_scheme *cs = NULL; | |
2911 | ||
2912 | for (i = 0; i < n; i++) { | |
2913 | if (l[i].cipher == cipher) { | |
2914 | cs = &l[i]; | |
2915 | break; | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | if (!cs || !(cs->iftype & BIT(iftype))) | |
2920 | return NULL; | |
2921 | ||
2922 | return cs; | |
2923 | } | |
2924 | ||
2925 | int ieee80211_cs_headroom(struct ieee80211_local *local, | |
2926 | struct cfg80211_crypto_settings *crypto, | |
2927 | enum nl80211_iftype iftype) | |
2928 | { | |
2929 | const struct ieee80211_cipher_scheme *cs; | |
2930 | int headroom = IEEE80211_ENCRYPT_HEADROOM; | |
2931 | int i; | |
2932 | ||
2933 | for (i = 0; i < crypto->n_ciphers_pairwise; i++) { | |
2934 | cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], | |
2935 | iftype); | |
2936 | ||
2937 | if (cs && headroom < cs->hdr_len) | |
2938 | headroom = cs->hdr_len; | |
2939 | } | |
2940 | ||
2941 | cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); | |
2942 | if (cs && headroom < cs->hdr_len) | |
2943 | headroom = cs->hdr_len; | |
2944 | ||
2945 | return headroom; | |
2946 | } | |
a7022e65 FF |
2947 | |
2948 | static bool | |
2949 | ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) | |
2950 | { | |
2951 | s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); | |
2952 | int skip; | |
2953 | ||
2954 | if (end > 0) | |
2955 | return false; | |
2956 | ||
2957 | /* End time is in the past, check for repetitions */ | |
2958 | skip = DIV_ROUND_UP(-end, data->desc[i].interval); | |
2959 | if (data->count[i] < 255) { | |
2960 | if (data->count[i] <= skip) { | |
2961 | data->count[i] = 0; | |
2962 | return false; | |
2963 | } | |
2964 | ||
2965 | data->count[i] -= skip; | |
2966 | } | |
2967 | ||
2968 | data->desc[i].start += skip * data->desc[i].interval; | |
2969 | ||
2970 | return true; | |
2971 | } | |
2972 | ||
2973 | static bool | |
2974 | ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, | |
2975 | s32 *offset) | |
2976 | { | |
2977 | bool ret = false; | |
2978 | int i; | |
2979 | ||
2980 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2981 | s32 cur; | |
2982 | ||
2983 | if (!data->count[i]) | |
2984 | continue; | |
2985 | ||
2986 | if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) | |
2987 | ret = true; | |
2988 | ||
2989 | cur = data->desc[i].start - tsf; | |
2990 | if (cur > *offset) | |
2991 | continue; | |
2992 | ||
2993 | cur = data->desc[i].start + data->desc[i].duration - tsf; | |
2994 | if (cur > *offset) | |
2995 | *offset = cur; | |
2996 | } | |
2997 | ||
2998 | return ret; | |
2999 | } | |
3000 | ||
3001 | static u32 | |
3002 | ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) | |
3003 | { | |
3004 | s32 offset = 0; | |
3005 | int tries = 0; | |
3006 | /* | |
3007 | * arbitrary limit, used to avoid infinite loops when combined NoA | |
3008 | * descriptors cover the full time period. | |
3009 | */ | |
3010 | int max_tries = 5; | |
3011 | ||
3012 | ieee80211_extend_absent_time(data, tsf, &offset); | |
3013 | do { | |
3014 | if (!ieee80211_extend_absent_time(data, tsf, &offset)) | |
3015 | break; | |
3016 | ||
3017 | tries++; | |
3018 | } while (tries < max_tries); | |
3019 | ||
3020 | return offset; | |
3021 | } | |
3022 | ||
3023 | void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) | |
3024 | { | |
3025 | u32 next_offset = BIT(31) - 1; | |
3026 | int i; | |
3027 | ||
3028 | data->absent = 0; | |
3029 | data->has_next_tsf = false; | |
3030 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3031 | s32 start; | |
3032 | ||
3033 | if (!data->count[i]) | |
3034 | continue; | |
3035 | ||
3036 | ieee80211_extend_noa_desc(data, tsf, i); | |
3037 | start = data->desc[i].start - tsf; | |
3038 | if (start <= 0) | |
3039 | data->absent |= BIT(i); | |
3040 | ||
3041 | if (next_offset > start) | |
3042 | next_offset = start; | |
3043 | ||
3044 | data->has_next_tsf = true; | |
3045 | } | |
3046 | ||
3047 | if (data->absent) | |
3048 | next_offset = ieee80211_get_noa_absent_time(data, tsf); | |
3049 | ||
3050 | data->next_tsf = tsf + next_offset; | |
3051 | } | |
3052 | EXPORT_SYMBOL(ieee80211_update_p2p_noa); | |
3053 | ||
3054 | int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, | |
3055 | struct ieee80211_noa_data *data, u32 tsf) | |
3056 | { | |
3057 | int ret = 0; | |
3058 | int i; | |
3059 | ||
3060 | memset(data, 0, sizeof(*data)); | |
3061 | ||
3062 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3063 | const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; | |
3064 | ||
3065 | if (!desc->count || !desc->duration) | |
3066 | continue; | |
3067 | ||
3068 | data->count[i] = desc->count; | |
3069 | data->desc[i].start = le32_to_cpu(desc->start_time); | |
3070 | data->desc[i].duration = le32_to_cpu(desc->duration); | |
3071 | data->desc[i].interval = le32_to_cpu(desc->interval); | |
3072 | ||
3073 | if (data->count[i] > 1 && | |
3074 | data->desc[i].interval < data->desc[i].duration) | |
3075 | continue; | |
3076 | ||
3077 | ieee80211_extend_noa_desc(data, tsf, i); | |
3078 | ret++; | |
3079 | } | |
3080 | ||
3081 | if (ret) | |
3082 | ieee80211_update_p2p_noa(data, tsf); | |
3083 | ||
3084 | return ret; | |
3085 | } | |
3086 | EXPORT_SYMBOL(ieee80211_parse_p2p_noa); | |
057d5f4b TP |
3087 | |
3088 | void ieee80211_recalc_dtim(struct ieee80211_local *local, | |
3089 | struct ieee80211_sub_if_data *sdata) | |
3090 | { | |
3091 | u64 tsf = drv_get_tsf(local, sdata); | |
3092 | u64 dtim_count = 0; | |
3093 | u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; | |
3094 | u8 dtim_period = sdata->vif.bss_conf.dtim_period; | |
3095 | struct ps_data *ps; | |
3096 | u8 bcns_from_dtim; | |
3097 | ||
3098 | if (tsf == -1ULL || !beacon_int || !dtim_period) | |
3099 | return; | |
3100 | ||
3101 | if (sdata->vif.type == NL80211_IFTYPE_AP || | |
3102 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
3103 | if (!sdata->bss) | |
3104 | return; | |
3105 | ||
3106 | ps = &sdata->bss->ps; | |
3107 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
3108 | ps = &sdata->u.mesh.ps; | |
3109 | } else { | |
3110 | return; | |
3111 | } | |
3112 | ||
3113 | /* | |
3114 | * actually finds last dtim_count, mac80211 will update in | |
3115 | * __beacon_add_tim(). | |
3116 | * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period | |
3117 | */ | |
3118 | do_div(tsf, beacon_int); | |
3119 | bcns_from_dtim = do_div(tsf, dtim_period); | |
3120 | /* just had a DTIM */ | |
3121 | if (!bcns_from_dtim) | |
3122 | dtim_count = 0; | |
3123 | else | |
3124 | dtim_count = dtim_period - bcns_from_dtim; | |
3125 | ||
3126 | ps->dtim_count = dtim_count; | |
3127 | } | |
73de86a3 | 3128 | |
71e6195e MK |
3129 | static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, |
3130 | struct ieee80211_chanctx *ctx) | |
3131 | { | |
3132 | struct ieee80211_sub_if_data *sdata; | |
3133 | u8 radar_detect = 0; | |
3134 | ||
3135 | lockdep_assert_held(&local->chanctx_mtx); | |
3136 | ||
3137 | if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) | |
3138 | return 0; | |
3139 | ||
3140 | list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) | |
3141 | if (sdata->reserved_radar_required) | |
3142 | radar_detect |= BIT(sdata->reserved_chandef.width); | |
3143 | ||
3144 | /* | |
3145 | * An in-place reservation context should not have any assigned vifs | |
3146 | * until it replaces the other context. | |
3147 | */ | |
3148 | WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && | |
3149 | !list_empty(&ctx->assigned_vifs)); | |
3150 | ||
3151 | list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list) | |
3152 | if (sdata->radar_required) | |
3153 | radar_detect |= BIT(sdata->vif.bss_conf.chandef.width); | |
3154 | ||
3155 | return radar_detect; | |
3156 | } | |
3157 | ||
73de86a3 LC |
3158 | int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, |
3159 | const struct cfg80211_chan_def *chandef, | |
3160 | enum ieee80211_chanctx_mode chanmode, | |
3161 | u8 radar_detect) | |
3162 | { | |
3163 | struct ieee80211_local *local = sdata->local; | |
3164 | struct ieee80211_sub_if_data *sdata_iter; | |
3165 | enum nl80211_iftype iftype = sdata->wdev.iftype; | |
3166 | int num[NUM_NL80211_IFTYPES]; | |
3167 | struct ieee80211_chanctx *ctx; | |
b6a55015 | 3168 | int num_different_channels = 0; |
73de86a3 LC |
3169 | int total = 1; |
3170 | ||
3171 | lockdep_assert_held(&local->chanctx_mtx); | |
3172 | ||
3173 | if (WARN_ON(hweight32(radar_detect) > 1)) | |
3174 | return -EINVAL; | |
3175 | ||
b6a55015 LC |
3176 | if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
3177 | !chandef->chan)) | |
73de86a3 LC |
3178 | return -EINVAL; |
3179 | ||
b6a55015 LC |
3180 | if (chandef) |
3181 | num_different_channels = 1; | |
3182 | ||
73de86a3 LC |
3183 | if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) |
3184 | return -EINVAL; | |
3185 | ||
3186 | /* Always allow software iftypes */ | |
3187 | if (local->hw.wiphy->software_iftypes & BIT(iftype)) { | |
3188 | if (radar_detect) | |
3189 | return -EINVAL; | |
3190 | return 0; | |
3191 | } | |
3192 | ||
3193 | memset(num, 0, sizeof(num)); | |
3194 | ||
3195 | if (iftype != NL80211_IFTYPE_UNSPECIFIED) | |
3196 | num[iftype] = 1; | |
3197 | ||
3198 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3199 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3200 | continue; | |
71e6195e | 3201 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
73de86a3 LC |
3202 | if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { |
3203 | num_different_channels++; | |
3204 | continue; | |
3205 | } | |
b6a55015 | 3206 | if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
73de86a3 LC |
3207 | cfg80211_chandef_compatible(chandef, |
3208 | &ctx->conf.def)) | |
3209 | continue; | |
3210 | num_different_channels++; | |
3211 | } | |
3212 | ||
3213 | list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { | |
3214 | struct wireless_dev *wdev_iter; | |
3215 | ||
3216 | wdev_iter = &sdata_iter->wdev; | |
3217 | ||
3218 | if (sdata_iter == sdata || | |
0f611d28 | 3219 | !ieee80211_sdata_running(sdata_iter) || |
73de86a3 LC |
3220 | local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) |
3221 | continue; | |
3222 | ||
3223 | num[wdev_iter->iftype]++; | |
3224 | total++; | |
3225 | } | |
3226 | ||
3227 | if (total == 1 && !radar_detect) | |
3228 | return 0; | |
3229 | ||
3230 | return cfg80211_check_combinations(local->hw.wiphy, | |
3231 | num_different_channels, | |
3232 | radar_detect, num); | |
3233 | } | |
6fa001bc MK |
3234 | |
3235 | static void | |
3236 | ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, | |
3237 | void *data) | |
3238 | { | |
3239 | u32 *max_num_different_channels = data; | |
3240 | ||
3241 | *max_num_different_channels = max(*max_num_different_channels, | |
3242 | c->num_different_channels); | |
3243 | } | |
3244 | ||
3245 | int ieee80211_max_num_channels(struct ieee80211_local *local) | |
3246 | { | |
3247 | struct ieee80211_sub_if_data *sdata; | |
3248 | int num[NUM_NL80211_IFTYPES] = {}; | |
3249 | struct ieee80211_chanctx *ctx; | |
3250 | int num_different_channels = 0; | |
3251 | u8 radar_detect = 0; | |
3252 | u32 max_num_different_channels = 1; | |
3253 | int err; | |
3254 | ||
3255 | lockdep_assert_held(&local->chanctx_mtx); | |
3256 | ||
3257 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3258 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3259 | continue; | |
3260 | ||
6fa001bc MK |
3261 | num_different_channels++; |
3262 | ||
71e6195e | 3263 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
6fa001bc MK |
3264 | } |
3265 | ||
3266 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3267 | num[sdata->wdev.iftype]++; | |
3268 | ||
3269 | err = cfg80211_iter_combinations(local->hw.wiphy, | |
3270 | num_different_channels, radar_detect, | |
3271 | num, ieee80211_iter_max_chans, | |
3272 | &max_num_different_channels); | |
3273 | if (err < 0) | |
3274 | return err; | |
3275 | ||
3276 | return max_num_different_channels; | |
3277 | } | |
40b861a0 AN |
3278 | |
3279 | u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) | |
3280 | { | |
3281 | *buf++ = WLAN_EID_VENDOR_SPECIFIC; | |
3282 | *buf++ = 7; /* len */ | |
3283 | *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
3284 | *buf++ = 0x50; | |
3285 | *buf++ = 0xf2; | |
3286 | *buf++ = 2; /* WME */ | |
3287 | *buf++ = 0; /* WME info */ | |
3288 | *buf++ = 1; /* WME ver */ | |
3289 | *buf++ = qosinfo; /* U-APSD no in use */ | |
3290 | ||
3291 | return buf; | |
3292 | } | |
ba8c3d6f FF |
3293 | |
3294 | void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, | |
3295 | struct sta_info *sta, | |
3296 | struct txq_info *txqi, int tid) | |
3297 | { | |
3298 | skb_queue_head_init(&txqi->queue); | |
3299 | txqi->txq.vif = &sdata->vif; | |
3300 | ||
3301 | if (sta) { | |
3302 | txqi->txq.sta = &sta->sta; | |
3303 | sta->sta.txq[tid] = &txqi->txq; | |
3304 | txqi->txq.ac = ieee802_1d_to_ac[tid & 7]; | |
3305 | } else { | |
3306 | sdata->vif.txq = &txqi->txq; | |
3307 | txqi->txq.ac = IEEE80211_AC_BE; | |
3308 | } | |
3309 | } |