Commit | Line | Data |
---|---|---|
c2d1560a JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
d98ad83e | 6 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
43d6df00 | 7 | * Copyright (C) 2015 Intel Deutschland GmbH |
c2d1560a JB |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * utilities for mac80211 | |
14 | */ | |
15 | ||
16 | #include <net/mac80211.h> | |
17 | #include <linux/netdevice.h> | |
bc3b2d7f | 18 | #include <linux/export.h> |
c2d1560a JB |
19 | #include <linux/types.h> |
20 | #include <linux/slab.h> | |
21 | #include <linux/skbuff.h> | |
22 | #include <linux/etherdevice.h> | |
23 | #include <linux/if_arp.h> | |
c2d1560a | 24 | #include <linux/bitmap.h> |
dd76986b | 25 | #include <linux/crc32.h> |
881d966b | 26 | #include <net/net_namespace.h> |
c2d1560a | 27 | #include <net/cfg80211.h> |
dabeb344 | 28 | #include <net/rtnetlink.h> |
c2d1560a JB |
29 | |
30 | #include "ieee80211_i.h" | |
24487981 | 31 | #include "driver-ops.h" |
2c8dccc7 | 32 | #include "rate.h" |
ee385855 | 33 | #include "mesh.h" |
c2d1560a | 34 | #include "wme.h" |
f2753ddb | 35 | #include "led.h" |
fffd0934 | 36 | #include "wep.h" |
c2d1560a JB |
37 | |
38 | /* privid for wiphys to determine whether they belong to us or not */ | |
8a47cea7 | 39 | const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; |
c2d1560a | 40 | |
9a95371a LR |
41 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
42 | { | |
43 | struct ieee80211_local *local; | |
44 | BUG_ON(!wiphy); | |
45 | ||
46 | local = wiphy_priv(wiphy); | |
47 | return &local->hw; | |
48 | } | |
49 | EXPORT_SYMBOL(wiphy_to_ieee80211_hw); | |
c2d1560a | 50 | |
5cf121c3 | 51 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
c2d1560a | 52 | { |
252b86c4 | 53 | struct sk_buff *skb; |
2de8e0d9 JB |
54 | struct ieee80211_hdr *hdr; |
55 | ||
252b86c4 | 56 | skb_queue_walk(&tx->skbs, skb) { |
2de8e0d9 JB |
57 | hdr = (struct ieee80211_hdr *) skb->data; |
58 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
252b86c4 | 59 | } |
c2d1560a JB |
60 | } |
61 | ||
4ee73f33 | 62 | int ieee80211_frame_duration(enum ieee80211_band band, size_t len, |
438b61b7 SW |
63 | int rate, int erp, int short_preamble, |
64 | int shift) | |
c2d1560a JB |
65 | { |
66 | int dur; | |
67 | ||
68 | /* calculate duration (in microseconds, rounded up to next higher | |
69 | * integer if it includes a fractional microsecond) to send frame of | |
70 | * len bytes (does not include FCS) at the given rate. Duration will | |
71 | * also include SIFS. | |
72 | * | |
73 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
74 | * DIV_ROUND_UP() operations. | |
438b61b7 SW |
75 | * |
76 | * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and | |
77 | * is assumed to be 0 otherwise. | |
c2d1560a JB |
78 | */ |
79 | ||
4ee73f33 | 80 | if (band == IEEE80211_BAND_5GHZ || erp) { |
c2d1560a JB |
81 | /* |
82 | * OFDM: | |
83 | * | |
84 | * N_DBPS = DATARATE x 4 | |
85 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
86 | * (16 = SIGNAL time, 6 = tail bits) | |
87 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
88 | * | |
89 | * T_SYM = 4 usec | |
438b61b7 | 90 | * 802.11a - 18.5.2: aSIFSTime = 16 usec |
c2d1560a JB |
91 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
92 | * signal ext = 6 usec | |
93 | */ | |
c2d1560a | 94 | dur = 16; /* SIFS + signal ext */ |
438b61b7 SW |
95 | dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ |
96 | dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ | |
438b61b7 SW |
97 | |
98 | /* IEEE 802.11-2012 18.3.2.4: all values above are: | |
99 | * * times 4 for 5 MHz | |
100 | * * times 2 for 10 MHz | |
101 | */ | |
102 | dur *= 1 << shift; | |
2103dec1 SW |
103 | |
104 | /* rates should already consider the channel bandwidth, | |
105 | * don't apply divisor again. | |
106 | */ | |
107 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
108 | 4 * rate); /* T_SYM x N_SYM */ | |
c2d1560a JB |
109 | } else { |
110 | /* | |
111 | * 802.11b or 802.11g with 802.11b compatibility: | |
112 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
113 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
114 | * | |
115 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
116 | * aSIFSTime = 10 usec | |
117 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
118 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
119 | */ | |
120 | dur = 10; /* aSIFSTime = 10 usec */ | |
121 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
122 | ||
123 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
124 | } | |
125 | ||
126 | return dur; | |
127 | } | |
128 | ||
129 | /* Exported duration function for driver use */ | |
32bfd35d JB |
130 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
131 | struct ieee80211_vif *vif, | |
4ee73f33 | 132 | enum ieee80211_band band, |
8318d78a JB |
133 | size_t frame_len, |
134 | struct ieee80211_rate *rate) | |
c2d1560a | 135 | { |
25d834e1 | 136 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 137 | u16 dur; |
438b61b7 | 138 | int erp, shift = 0; |
25d834e1 | 139 | bool short_preamble = false; |
c2d1560a | 140 | |
8318d78a | 141 | erp = 0; |
25d834e1 JB |
142 | if (vif) { |
143 | sdata = vif_to_sdata(vif); | |
bda3933a | 144 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
145 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
146 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 147 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 148 | } |
8318d78a | 149 | |
4ee73f33 | 150 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
438b61b7 | 151 | short_preamble, shift); |
c2d1560a JB |
152 | |
153 | return cpu_to_le16(dur); | |
154 | } | |
155 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
156 | ||
32bfd35d JB |
157 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
158 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 159 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
160 | { |
161 | struct ieee80211_local *local = hw_to_local(hw); | |
162 | struct ieee80211_rate *rate; | |
25d834e1 | 163 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 164 | bool short_preamble; |
2103dec1 | 165 | int erp, shift = 0, bitrate; |
c2d1560a | 166 | u16 dur; |
2e92e6f2 JB |
167 | struct ieee80211_supported_band *sband; |
168 | ||
4ee73f33 | 169 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 170 | |
25d834e1 | 171 | short_preamble = false; |
7e9ed188 | 172 | |
e039fa4a | 173 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
174 | |
175 | erp = 0; | |
25d834e1 JB |
176 | if (vif) { |
177 | sdata = vif_to_sdata(vif); | |
bda3933a | 178 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
179 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
180 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 181 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 182 | } |
c2d1560a | 183 | |
2103dec1 SW |
184 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
185 | ||
c2d1560a | 186 | /* CTS duration */ |
2103dec1 | 187 | dur = ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 188 | erp, short_preamble, shift); |
c2d1560a | 189 | /* Data frame duration */ |
2103dec1 | 190 | dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 191 | erp, short_preamble, shift); |
c2d1560a | 192 | /* ACK duration */ |
2103dec1 | 193 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 194 | erp, short_preamble, shift); |
c2d1560a JB |
195 | |
196 | return cpu_to_le16(dur); | |
197 | } | |
198 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
199 | ||
32bfd35d JB |
200 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
201 | struct ieee80211_vif *vif, | |
c2d1560a | 202 | size_t frame_len, |
e039fa4a | 203 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
204 | { |
205 | struct ieee80211_local *local = hw_to_local(hw); | |
206 | struct ieee80211_rate *rate; | |
25d834e1 | 207 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 208 | bool short_preamble; |
2103dec1 | 209 | int erp, shift = 0, bitrate; |
c2d1560a | 210 | u16 dur; |
2e92e6f2 JB |
211 | struct ieee80211_supported_band *sband; |
212 | ||
4ee73f33 | 213 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 214 | |
25d834e1 | 215 | short_preamble = false; |
7e9ed188 | 216 | |
e039fa4a | 217 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 218 | erp = 0; |
25d834e1 JB |
219 | if (vif) { |
220 | sdata = vif_to_sdata(vif); | |
bda3933a | 221 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
222 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
223 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 224 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 225 | } |
c2d1560a | 226 | |
2103dec1 SW |
227 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
228 | ||
c2d1560a | 229 | /* Data frame duration */ |
2103dec1 | 230 | dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 231 | erp, short_preamble, shift); |
e039fa4a | 232 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 233 | /* ACK duration */ |
2103dec1 | 234 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 235 | erp, short_preamble, shift); |
c2d1560a JB |
236 | } |
237 | ||
238 | return cpu_to_le16(dur); | |
239 | } | |
240 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
241 | ||
3a25a8c8 JB |
242 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
243 | { | |
244 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
245 | int n_acs = IEEE80211_NUM_ACS; |
246 | ||
247 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
248 | n_acs = 1; | |
3a25a8c8 JB |
249 | |
250 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
251 | int ac; | |
252 | ||
f142c6b9 JB |
253 | if (!sdata->dev) |
254 | continue; | |
255 | ||
3a25a8c8 JB |
256 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && |
257 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
258 | continue; | |
259 | ||
a6f38ac3 | 260 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
261 | int ac_queue = sdata->vif.hw_queue[ac]; |
262 | ||
ba8c3d6f FF |
263 | if (local->ops->wake_tx_queue && |
264 | (atomic_read(&sdata->txqs_len[ac]) > | |
265 | local->hw.txq_ac_max_pending)) | |
266 | continue; | |
267 | ||
3a25a8c8 JB |
268 | if (ac_queue == queue || |
269 | (sdata->vif.cab_queue == queue && | |
270 | local->queue_stop_reasons[ac_queue] == 0 && | |
271 | skb_queue_empty(&local->pending[ac_queue]))) | |
272 | netif_wake_subqueue(sdata->dev, ac); | |
273 | } | |
274 | } | |
275 | } | |
276 | ||
ce7c9111 | 277 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
278 | enum queue_stop_reason reason, |
279 | bool refcounted) | |
c2d1560a JB |
280 | { |
281 | struct ieee80211_local *local = hw_to_local(hw); | |
282 | ||
b5878a2d JB |
283 | trace_wake_queue(local, queue, reason); |
284 | ||
e4e72fb4 JB |
285 | if (WARN_ON(queue >= hw->queues)) |
286 | return; | |
ce7c9111 | 287 | |
ada15125 JB |
288 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
289 | return; | |
290 | ||
cca07b00 LC |
291 | if (!refcounted) |
292 | local->q_stop_reasons[queue][reason] = 0; | |
293 | else | |
294 | local->q_stop_reasons[queue][reason]--; | |
295 | ||
296 | if (local->q_stop_reasons[queue][reason] == 0) | |
297 | __clear_bit(reason, &local->queue_stop_reasons[queue]); | |
96f5e66e JB |
298 | |
299 | if (local->queue_stop_reasons[queue] != 0) | |
300 | /* someone still has this queue stopped */ | |
301 | return; | |
302 | ||
7236fe29 JB |
303 | if (skb_queue_empty(&local->pending[queue])) { |
304 | rcu_read_lock(); | |
3a25a8c8 | 305 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
306 | rcu_read_unlock(); |
307 | } else | |
3b8d81e0 | 308 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 309 | } |
ce7c9111 | 310 | |
96f5e66e | 311 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
312 | enum queue_stop_reason reason, |
313 | bool refcounted) | |
ce7c9111 KV |
314 | { |
315 | struct ieee80211_local *local = hw_to_local(hw); | |
316 | unsigned long flags; | |
317 | ||
318 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 319 | __ieee80211_wake_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
320 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
321 | } | |
322 | ||
323 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
324 | { | |
325 | ieee80211_wake_queue_by_reason(hw, queue, | |
cca07b00 LC |
326 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
327 | false); | |
ce7c9111 | 328 | } |
c2d1560a JB |
329 | EXPORT_SYMBOL(ieee80211_wake_queue); |
330 | ||
ce7c9111 | 331 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
332 | enum queue_stop_reason reason, |
333 | bool refcounted) | |
c2d1560a JB |
334 | { |
335 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 336 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 337 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 338 | |
b5878a2d JB |
339 | trace_stop_queue(local, queue, reason); |
340 | ||
e4e72fb4 JB |
341 | if (WARN_ON(queue >= hw->queues)) |
342 | return; | |
96f5e66e | 343 | |
cca07b00 LC |
344 | if (!refcounted) |
345 | local->q_stop_reasons[queue][reason] = 1; | |
346 | else | |
347 | local->q_stop_reasons[queue][reason]++; | |
ada15125 | 348 | |
cca07b00 LC |
349 | if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) |
350 | return; | |
cf0277e7 | 351 | |
a6f38ac3 JB |
352 | if (local->hw.queues < IEEE80211_NUM_ACS) |
353 | n_acs = 1; | |
354 | ||
cf0277e7 | 355 | rcu_read_lock(); |
3a25a8c8 JB |
356 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
357 | int ac; | |
358 | ||
f142c6b9 JB |
359 | if (!sdata->dev) |
360 | continue; | |
361 | ||
a6f38ac3 | 362 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
363 | if (sdata->vif.hw_queue[ac] == queue || |
364 | sdata->vif.cab_queue == queue) | |
365 | netif_stop_subqueue(sdata->dev, ac); | |
366 | } | |
367 | } | |
cf0277e7 | 368 | rcu_read_unlock(); |
c2d1560a | 369 | } |
ce7c9111 | 370 | |
96f5e66e | 371 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
372 | enum queue_stop_reason reason, |
373 | bool refcounted) | |
ce7c9111 KV |
374 | { |
375 | struct ieee80211_local *local = hw_to_local(hw); | |
376 | unsigned long flags; | |
377 | ||
378 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 379 | __ieee80211_stop_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
380 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
381 | } | |
382 | ||
383 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
384 | { | |
385 | ieee80211_stop_queue_by_reason(hw, queue, | |
cca07b00 LC |
386 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
387 | false); | |
ce7c9111 | 388 | } |
c2d1560a JB |
389 | EXPORT_SYMBOL(ieee80211_stop_queue); |
390 | ||
8f77f384 JB |
391 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
392 | struct sk_buff *skb) | |
393 | { | |
394 | struct ieee80211_hw *hw = &local->hw; | |
395 | unsigned long flags; | |
a7bc376c | 396 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 397 | int queue = info->hw_queue; |
a7bc376c JB |
398 | |
399 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 400 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
401 | return; |
402 | } | |
8f77f384 JB |
403 | |
404 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 LC |
405 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
406 | false); | |
3b8d81e0 | 407 | __skb_queue_tail(&local->pending[queue], skb); |
cca07b00 LC |
408 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
409 | false); | |
8f77f384 JB |
410 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
411 | } | |
412 | ||
e3685e03 JB |
413 | void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
414 | struct sk_buff_head *skbs) | |
8f77f384 JB |
415 | { |
416 | struct ieee80211_hw *hw = &local->hw; | |
417 | struct sk_buff *skb; | |
418 | unsigned long flags; | |
b0b97a8a | 419 | int queue, i; |
8f77f384 JB |
420 | |
421 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 422 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
423 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
424 | ||
425 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 426 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
427 | continue; |
428 | } | |
429 | ||
3a25a8c8 | 430 | queue = info->hw_queue; |
4644ae89 JB |
431 | |
432 | __ieee80211_stop_queue(hw, queue, | |
cca07b00 LC |
433 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
434 | false); | |
4644ae89 | 435 | |
3b8d81e0 | 436 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
437 | } |
438 | ||
3b8d81e0 | 439 | for (i = 0; i < hw->queues; i++) |
8f77f384 | 440 | __ieee80211_wake_queue(hw, i, |
cca07b00 LC |
441 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
442 | false); | |
8f77f384 | 443 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
444 | } |
445 | ||
ce7c9111 | 446 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 447 | unsigned long queues, |
cca07b00 LC |
448 | enum queue_stop_reason reason, |
449 | bool refcounted) | |
c2d1560a | 450 | { |
ce7c9111 KV |
451 | struct ieee80211_local *local = hw_to_local(hw); |
452 | unsigned long flags; | |
c2d1560a JB |
453 | int i; |
454 | ||
ce7c9111 KV |
455 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
456 | ||
445ea4e8 | 457 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 458 | __ieee80211_stop_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
459 | |
460 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
461 | } | |
462 | ||
463 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
464 | { | |
445ea4e8 | 465 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
466 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
467 | false); | |
c2d1560a JB |
468 | } |
469 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
470 | ||
92ab8535 TW |
471 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
472 | { | |
473 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
474 | unsigned long flags; |
475 | int ret; | |
96f5e66e | 476 | |
e4e72fb4 JB |
477 | if (WARN_ON(queue >= hw->queues)) |
478 | return true; | |
96f5e66e | 479 | |
3b8d81e0 | 480 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
481 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
482 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
483 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
484 | return ret; | |
92ab8535 TW |
485 | } |
486 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
487 | ||
ce7c9111 | 488 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 489 | unsigned long queues, |
cca07b00 LC |
490 | enum queue_stop_reason reason, |
491 | bool refcounted) | |
c2d1560a | 492 | { |
ce7c9111 KV |
493 | struct ieee80211_local *local = hw_to_local(hw); |
494 | unsigned long flags; | |
c2d1560a JB |
495 | int i; |
496 | ||
ce7c9111 KV |
497 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
498 | ||
445ea4e8 | 499 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 500 | __ieee80211_wake_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
501 | |
502 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
503 | } | |
504 | ||
505 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
506 | { | |
445ea4e8 | 507 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
508 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
509 | false); | |
c2d1560a JB |
510 | } |
511 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 512 | |
26da23b6 LC |
513 | static unsigned int |
514 | ieee80211_get_vif_queues(struct ieee80211_local *local, | |
515 | struct ieee80211_sub_if_data *sdata) | |
39ecc01d | 516 | { |
26da23b6 | 517 | unsigned int queues; |
39ecc01d | 518 | |
30686bf7 | 519 | if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { |
39ecc01d JB |
520 | int ac; |
521 | ||
522 | queues = 0; | |
523 | ||
524 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
525 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
526 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
527 | queues |= BIT(sdata->vif.cab_queue); | |
528 | } else { | |
529 | /* all queues */ | |
530 | queues = BIT(local->hw.queues) - 1; | |
531 | } | |
532 | ||
26da23b6 LC |
533 | return queues; |
534 | } | |
535 | ||
4f9610d5 LK |
536 | void __ieee80211_flush_queues(struct ieee80211_local *local, |
537 | struct ieee80211_sub_if_data *sdata, | |
3b24f4c6 | 538 | unsigned int queues, bool drop) |
26da23b6 | 539 | { |
26da23b6 LC |
540 | if (!local->ops->flush) |
541 | return; | |
542 | ||
4f9610d5 LK |
543 | /* |
544 | * If no queue was set, or if the HW doesn't support | |
545 | * IEEE80211_HW_QUEUE_CONTROL - flush all queues | |
546 | */ | |
30686bf7 | 547 | if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) |
4f9610d5 | 548 | queues = ieee80211_get_vif_queues(local, sdata); |
26da23b6 | 549 | |
59f48fe2 | 550 | ieee80211_stop_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
551 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
552 | false); | |
445ea4e8 | 553 | |
3b24f4c6 | 554 | drv_flush(local, sdata, queues, drop); |
445ea4e8 | 555 | |
59f48fe2 | 556 | ieee80211_wake_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
557 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
558 | false); | |
39ecc01d JB |
559 | } |
560 | ||
4f9610d5 | 561 | void ieee80211_flush_queues(struct ieee80211_local *local, |
3b24f4c6 | 562 | struct ieee80211_sub_if_data *sdata, bool drop) |
4f9610d5 | 563 | { |
3b24f4c6 | 564 | __ieee80211_flush_queues(local, sdata, 0, drop); |
4f9610d5 LK |
565 | } |
566 | ||
26da23b6 LC |
567 | void ieee80211_stop_vif_queues(struct ieee80211_local *local, |
568 | struct ieee80211_sub_if_data *sdata, | |
569 | enum queue_stop_reason reason) | |
570 | { | |
571 | ieee80211_stop_queues_by_reason(&local->hw, | |
572 | ieee80211_get_vif_queues(local, sdata), | |
573 | reason, true); | |
574 | } | |
575 | ||
576 | void ieee80211_wake_vif_queues(struct ieee80211_local *local, | |
577 | struct ieee80211_sub_if_data *sdata, | |
578 | enum queue_stop_reason reason) | |
579 | { | |
580 | ieee80211_wake_queues_by_reason(&local->hw, | |
581 | ieee80211_get_vif_queues(local, sdata), | |
582 | reason, true); | |
583 | } | |
584 | ||
3384d757 AN |
585 | static void __iterate_interfaces(struct ieee80211_local *local, |
586 | u32 iter_flags, | |
587 | void (*iterator)(void *data, u8 *mac, | |
588 | struct ieee80211_vif *vif), | |
589 | void *data) | |
dabeb344 | 590 | { |
dabeb344 | 591 | struct ieee80211_sub_if_data *sdata; |
3384d757 | 592 | bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; |
dabeb344 | 593 | |
c7c71066 | 594 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 595 | switch (sdata->vif.type) { |
05c914fe | 596 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
597 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
598 | continue; | |
599 | break; | |
05c914fe | 600 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 601 | continue; |
2ca27bcf | 602 | default: |
2f561feb ID |
603 | break; |
604 | } | |
8b2c9824 | 605 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
3384d757 | 606 | active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
8b2c9824 | 607 | continue; |
3384d757 | 608 | if (ieee80211_sdata_running(sdata) || !active_only) |
47846c9b | 609 | iterator(data, sdata->vif.addr, |
2f561feb ID |
610 | &sdata->vif); |
611 | } | |
612 | ||
c7c71066 JB |
613 | sdata = rcu_dereference_check(local->monitor_sdata, |
614 | lockdep_is_held(&local->iflist_mtx) || | |
615 | lockdep_rtnl_is_held()); | |
8b2c9824 | 616 | if (sdata && |
3384d757 | 617 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || |
8b2c9824 | 618 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
685fb72b | 619 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 620 | } |
685fb72b | 621 | |
3384d757 | 622 | void ieee80211_iterate_interfaces( |
c7c71066 JB |
623 | struct ieee80211_hw *hw, u32 iter_flags, |
624 | void (*iterator)(void *data, u8 *mac, | |
625 | struct ieee80211_vif *vif), | |
626 | void *data) | |
627 | { | |
628 | struct ieee80211_local *local = hw_to_local(hw); | |
629 | ||
630 | mutex_lock(&local->iflist_mtx); | |
3384d757 | 631 | __iterate_interfaces(local, iter_flags, iterator, data); |
c771c9d8 | 632 | mutex_unlock(&local->iflist_mtx); |
2f561feb | 633 | } |
3384d757 | 634 | EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); |
2f561feb ID |
635 | |
636 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 637 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
638 | void (*iterator)(void *data, u8 *mac, |
639 | struct ieee80211_vif *vif), | |
640 | void *data) | |
641 | { | |
642 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 643 | |
e38bad47 | 644 | rcu_read_lock(); |
3384d757 AN |
645 | __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
646 | iterator, data); | |
c7c71066 JB |
647 | rcu_read_unlock(); |
648 | } | |
649 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 650 | |
c7c71066 JB |
651 | void ieee80211_iterate_active_interfaces_rtnl( |
652 | struct ieee80211_hw *hw, u32 iter_flags, | |
653 | void (*iterator)(void *data, u8 *mac, | |
654 | struct ieee80211_vif *vif), | |
655 | void *data) | |
656 | { | |
657 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 658 | |
c7c71066 | 659 | ASSERT_RTNL(); |
685fb72b | 660 | |
3384d757 AN |
661 | __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
662 | iterator, data); | |
dabeb344 | 663 | } |
c7c71066 | 664 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 665 | |
0fc1e049 AN |
666 | static void __iterate_stations(struct ieee80211_local *local, |
667 | void (*iterator)(void *data, | |
668 | struct ieee80211_sta *sta), | |
669 | void *data) | |
670 | { | |
671 | struct sta_info *sta; | |
672 | ||
673 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
674 | if (!sta->uploaded) | |
675 | continue; | |
676 | ||
677 | iterator(data, &sta->sta); | |
678 | } | |
679 | } | |
680 | ||
681 | void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, | |
682 | void (*iterator)(void *data, | |
683 | struct ieee80211_sta *sta), | |
684 | void *data) | |
685 | { | |
686 | struct ieee80211_local *local = hw_to_local(hw); | |
687 | ||
688 | rcu_read_lock(); | |
689 | __iterate_stations(local, iterator, data); | |
690 | rcu_read_unlock(); | |
691 | } | |
692 | EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); | |
693 | ||
ad7e718c JB |
694 | struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) |
695 | { | |
696 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
697 | ||
698 | if (!ieee80211_sdata_running(sdata) || | |
699 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
700 | return NULL; | |
701 | return &sdata->vif; | |
702 | } | |
703 | EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); | |
704 | ||
dc5a1ad7 EG |
705 | struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) |
706 | { | |
6513e98e JB |
707 | struct ieee80211_sub_if_data *sdata; |
708 | ||
709 | if (!vif) | |
710 | return NULL; | |
711 | ||
712 | sdata = vif_to_sdata(vif); | |
dc5a1ad7 EG |
713 | |
714 | if (!ieee80211_sdata_running(sdata) || | |
715 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
716 | return NULL; | |
717 | ||
718 | return &sdata->wdev; | |
719 | } | |
720 | EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); | |
721 | ||
42935eca LR |
722 | /* |
723 | * Nothing should have been stuffed into the workqueue during | |
4afaff17 EG |
724 | * the suspend->resume cycle. Since we can't check each caller |
725 | * of this function if we are already quiescing / suspended, | |
726 | * check here and don't WARN since this can actually happen when | |
727 | * the rx path (for example) is racing against __ieee80211_suspend | |
728 | * and suspending / quiescing was set after the rx path checked | |
729 | * them. | |
42935eca LR |
730 | */ |
731 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
732 | { | |
4afaff17 EG |
733 | if (local->quiescing || (local->suspended && !local->resuming)) { |
734 | pr_warn("queueing ieee80211 work while going to suspend\n"); | |
ceb99fe0 | 735 | return false; |
4afaff17 | 736 | } |
42935eca LR |
737 | |
738 | return true; | |
739 | } | |
740 | ||
741 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
742 | { | |
743 | struct ieee80211_local *local = hw_to_local(hw); | |
744 | ||
745 | if (!ieee80211_can_queue_work(local)) | |
746 | return; | |
747 | ||
748 | queue_work(local->workqueue, work); | |
749 | } | |
750 | EXPORT_SYMBOL(ieee80211_queue_work); | |
751 | ||
752 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
753 | struct delayed_work *dwork, | |
754 | unsigned long delay) | |
755 | { | |
756 | struct ieee80211_local *local = hw_to_local(hw); | |
757 | ||
758 | if (!ieee80211_can_queue_work(local)) | |
759 | return; | |
760 | ||
761 | queue_delayed_work(local->workqueue, dwork, delay); | |
762 | } | |
763 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
764 | ||
35d865af | 765 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
766 | struct ieee802_11_elems *elems, |
767 | u64 filter, u32 crc) | |
768 | { | |
769 | size_t left = len; | |
35d865af | 770 | const u8 *pos = start; |
dd76986b | 771 | bool calc_crc = filter != 0; |
fcff4f10 | 772 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 773 | const u8 *ie; |
dd76986b | 774 | |
fcff4f10 | 775 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
776 | memset(elems, 0, sizeof(*elems)); |
777 | elems->ie_start = start; | |
778 | elems->total_len = len; | |
779 | ||
780 | while (left >= 2) { | |
781 | u8 id, elen; | |
fcff4f10 | 782 | bool elem_parse_failed; |
dd76986b JB |
783 | |
784 | id = *pos++; | |
785 | elen = *pos++; | |
786 | left -= 2; | |
787 | ||
fcff4f10 PS |
788 | if (elen > left) { |
789 | elems->parse_error = true; | |
dd76986b | 790 | break; |
fcff4f10 PS |
791 | } |
792 | ||
9690fb16 JB |
793 | switch (id) { |
794 | case WLAN_EID_SSID: | |
795 | case WLAN_EID_SUPP_RATES: | |
796 | case WLAN_EID_FH_PARAMS: | |
797 | case WLAN_EID_DS_PARAMS: | |
798 | case WLAN_EID_CF_PARAMS: | |
799 | case WLAN_EID_TIM: | |
800 | case WLAN_EID_IBSS_PARAMS: | |
801 | case WLAN_EID_CHALLENGE: | |
802 | case WLAN_EID_RSN: | |
803 | case WLAN_EID_ERP_INFO: | |
804 | case WLAN_EID_EXT_SUPP_RATES: | |
805 | case WLAN_EID_HT_CAPABILITY: | |
806 | case WLAN_EID_HT_OPERATION: | |
807 | case WLAN_EID_VHT_CAPABILITY: | |
808 | case WLAN_EID_VHT_OPERATION: | |
809 | case WLAN_EID_MESH_ID: | |
810 | case WLAN_EID_MESH_CONFIG: | |
811 | case WLAN_EID_PEER_MGMT: | |
812 | case WLAN_EID_PREQ: | |
813 | case WLAN_EID_PREP: | |
814 | case WLAN_EID_PERR: | |
815 | case WLAN_EID_RANN: | |
816 | case WLAN_EID_CHANNEL_SWITCH: | |
817 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
818 | case WLAN_EID_COUNTRY: | |
819 | case WLAN_EID_PWR_CONSTRAINT: | |
820 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 821 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf | 822 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
8f2535b9 | 823 | case WLAN_EID_CHAN_SWITCH_PARAM: |
9041c1fa | 824 | case WLAN_EID_EXT_CAPABILITY: |
53837584 AN |
825 | case WLAN_EID_CHAN_SWITCH_TIMING: |
826 | case WLAN_EID_LINK_ID: | |
b2e506bf JB |
827 | /* |
828 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
829 | * that if the content gets bigger it might be needed more than once | |
830 | */ | |
9690fb16 JB |
831 | if (test_bit(id, seen_elems)) { |
832 | elems->parse_error = true; | |
833 | left -= elen; | |
834 | pos += elen; | |
835 | continue; | |
836 | } | |
837 | break; | |
fcff4f10 | 838 | } |
dd76986b JB |
839 | |
840 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
841 | crc = crc32_be(crc, pos - 2, elen + 2); | |
842 | ||
fcff4f10 PS |
843 | elem_parse_failed = false; |
844 | ||
dd76986b | 845 | switch (id) { |
53837584 AN |
846 | case WLAN_EID_LINK_ID: |
847 | if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) { | |
848 | elem_parse_failed = true; | |
849 | break; | |
850 | } | |
851 | elems->lnk_id = (void *)(pos - 2); | |
852 | break; | |
853 | case WLAN_EID_CHAN_SWITCH_TIMING: | |
854 | if (elen != sizeof(struct ieee80211_ch_switch_timing)) { | |
855 | elem_parse_failed = true; | |
856 | break; | |
857 | } | |
858 | elems->ch_sw_timing = (void *)pos; | |
859 | break; | |
9041c1fa AN |
860 | case WLAN_EID_EXT_CAPABILITY: |
861 | elems->ext_capab = pos; | |
862 | elems->ext_capab_len = elen; | |
863 | break; | |
dd76986b JB |
864 | case WLAN_EID_SSID: |
865 | elems->ssid = pos; | |
866 | elems->ssid_len = elen; | |
867 | break; | |
868 | case WLAN_EID_SUPP_RATES: | |
869 | elems->supp_rates = pos; | |
870 | elems->supp_rates_len = elen; | |
871 | break; | |
dd76986b | 872 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
873 | if (elen >= 1) |
874 | elems->ds_params = pos; | |
875 | else | |
876 | elem_parse_failed = true; | |
dd76986b | 877 | break; |
dd76986b JB |
878 | case WLAN_EID_TIM: |
879 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
880 | elems->tim = (void *)pos; | |
881 | elems->tim_len = elen; | |
fcff4f10 PS |
882 | } else |
883 | elem_parse_failed = true; | |
dd76986b | 884 | break; |
dd76986b JB |
885 | case WLAN_EID_CHALLENGE: |
886 | elems->challenge = pos; | |
887 | elems->challenge_len = elen; | |
888 | break; | |
889 | case WLAN_EID_VENDOR_SPECIFIC: | |
890 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
891 | pos[2] == 0xf2) { | |
892 | /* Microsoft OUI (00:50:F2) */ | |
893 | ||
894 | if (calc_crc) | |
895 | crc = crc32_be(crc, pos - 2, elen + 2); | |
896 | ||
441a33ba | 897 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
898 | /* OUI Type 2 - WMM IE */ |
899 | if (pos[4] == 0) { | |
900 | elems->wmm_info = pos; | |
901 | elems->wmm_info_len = elen; | |
902 | } else if (pos[4] == 1) { | |
903 | elems->wmm_param = pos; | |
904 | elems->wmm_param_len = elen; | |
905 | } | |
906 | } | |
907 | } | |
908 | break; | |
909 | case WLAN_EID_RSN: | |
910 | elems->rsn = pos; | |
911 | elems->rsn_len = elen; | |
912 | break; | |
913 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
914 | if (elen >= 1) |
915 | elems->erp_info = pos; | |
916 | else | |
917 | elem_parse_failed = true; | |
dd76986b JB |
918 | break; |
919 | case WLAN_EID_EXT_SUPP_RATES: | |
920 | elems->ext_supp_rates = pos; | |
921 | elems->ext_supp_rates_len = elen; | |
922 | break; | |
923 | case WLAN_EID_HT_CAPABILITY: | |
924 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
925 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
926 | else |
927 | elem_parse_failed = true; | |
dd76986b | 928 | break; |
074d46d1 JB |
929 | case WLAN_EID_HT_OPERATION: |
930 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
931 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
932 | else |
933 | elem_parse_failed = true; | |
dd76986b | 934 | break; |
818255ea MP |
935 | case WLAN_EID_VHT_CAPABILITY: |
936 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
937 | elems->vht_cap_elem = (void *)pos; | |
938 | else | |
939 | elem_parse_failed = true; | |
940 | break; | |
941 | case WLAN_EID_VHT_OPERATION: | |
942 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
943 | elems->vht_operation = (void *)pos; | |
944 | else | |
945 | elem_parse_failed = true; | |
946 | break; | |
bee7f586 JB |
947 | case WLAN_EID_OPMODE_NOTIF: |
948 | if (elen > 0) | |
949 | elems->opmode_notif = pos; | |
950 | else | |
951 | elem_parse_failed = true; | |
952 | break; | |
dd76986b JB |
953 | case WLAN_EID_MESH_ID: |
954 | elems->mesh_id = pos; | |
955 | elems->mesh_id_len = elen; | |
956 | break; | |
957 | case WLAN_EID_MESH_CONFIG: | |
958 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
959 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
960 | else |
961 | elem_parse_failed = true; | |
dd76986b JB |
962 | break; |
963 | case WLAN_EID_PEER_MGMT: | |
964 | elems->peering = pos; | |
965 | elems->peering_len = elen; | |
966 | break; | |
3f52b7e3 MP |
967 | case WLAN_EID_MESH_AWAKE_WINDOW: |
968 | if (elen >= 2) | |
969 | elems->awake_window = (void *)pos; | |
970 | break; | |
dd76986b JB |
971 | case WLAN_EID_PREQ: |
972 | elems->preq = pos; | |
973 | elems->preq_len = elen; | |
974 | break; | |
975 | case WLAN_EID_PREP: | |
976 | elems->prep = pos; | |
977 | elems->prep_len = elen; | |
978 | break; | |
979 | case WLAN_EID_PERR: | |
980 | elems->perr = pos; | |
981 | elems->perr_len = elen; | |
982 | break; | |
983 | case WLAN_EID_RANN: | |
984 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
985 | elems->rann = (void *)pos; | |
fcff4f10 PS |
986 | else |
987 | elem_parse_failed = true; | |
dd76986b JB |
988 | break; |
989 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
990 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
991 | elem_parse_failed = true; | |
992 | break; | |
993 | } | |
994 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 995 | break; |
b4f286a1 JB |
996 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
997 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
998 | elem_parse_failed = true; | |
999 | break; | |
1000 | } | |
1001 | elems->ext_chansw_ie = (void *)pos; | |
1002 | break; | |
85220d71 JB |
1003 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
1004 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
1005 | elem_parse_failed = true; | |
1006 | break; | |
1007 | } | |
1008 | elems->sec_chan_offs = (void *)pos; | |
1009 | break; | |
8f2535b9 CYY |
1010 | case WLAN_EID_CHAN_SWITCH_PARAM: |
1011 | if (elen != | |
1012 | sizeof(*elems->mesh_chansw_params_ie)) { | |
1013 | elem_parse_failed = true; | |
1014 | break; | |
1015 | } | |
1016 | elems->mesh_chansw_params_ie = (void *)pos; | |
1017 | break; | |
b2e506bf JB |
1018 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
1019 | if (!action || | |
1020 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
1021 | elem_parse_failed = true; | |
1022 | break; | |
1023 | } | |
1024 | elems->wide_bw_chansw_ie = (void *)pos; | |
1025 | break; | |
1026 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
1027 | if (action) { | |
1028 | elem_parse_failed = true; | |
1029 | break; | |
1030 | } | |
1031 | /* | |
1032 | * This is a bit tricky, but as we only care about | |
1033 | * the wide bandwidth channel switch element, so | |
1034 | * just parse it out manually. | |
1035 | */ | |
1036 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
1037 | pos, elen); | |
1038 | if (ie) { | |
1039 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
1040 | elems->wide_bw_chansw_ie = | |
1041 | (void *)(ie + 2); | |
1042 | else | |
1043 | elem_parse_failed = true; | |
1044 | } | |
1045 | break; | |
dd76986b JB |
1046 | case WLAN_EID_COUNTRY: |
1047 | elems->country_elem = pos; | |
1048 | elems->country_elem_len = elen; | |
1049 | break; | |
1050 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
1051 | if (elen != 1) { |
1052 | elem_parse_failed = true; | |
1053 | break; | |
1054 | } | |
dd76986b | 1055 | elems->pwr_constr_elem = pos; |
dd76986b | 1056 | break; |
c8d65917 SG |
1057 | case WLAN_EID_CISCO_VENDOR_SPECIFIC: |
1058 | /* Lots of different options exist, but we only care | |
1059 | * about the Dynamic Transmit Power Control element. | |
1060 | * First check for the Cisco OUI, then for the DTPC | |
1061 | * tag (0x00). | |
1062 | */ | |
1063 | if (elen < 4) { | |
1064 | elem_parse_failed = true; | |
1065 | break; | |
1066 | } | |
1067 | ||
1068 | if (pos[0] != 0x00 || pos[1] != 0x40 || | |
1069 | pos[2] != 0x96 || pos[3] != 0x00) | |
1070 | break; | |
1071 | ||
1072 | if (elen != 6) { | |
1073 | elem_parse_failed = true; | |
1074 | break; | |
1075 | } | |
1076 | ||
1077 | if (calc_crc) | |
1078 | crc = crc32_be(crc, pos - 2, elen + 2); | |
1079 | ||
1080 | elems->cisco_dtpc_elem = pos; | |
1081 | break; | |
dd76986b | 1082 | case WLAN_EID_TIMEOUT_INTERVAL: |
79ba1d89 JB |
1083 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
1084 | elems->timeout_int = (void *)pos; | |
1085 | else | |
1086 | elem_parse_failed = true; | |
dd76986b JB |
1087 | break; |
1088 | default: | |
1089 | break; | |
1090 | } | |
1091 | ||
fcff4f10 PS |
1092 | if (elem_parse_failed) |
1093 | elems->parse_error = true; | |
1094 | else | |
5df45690 | 1095 | __set_bit(id, seen_elems); |
fcff4f10 | 1096 | |
dd76986b JB |
1097 | left -= elen; |
1098 | pos += elen; | |
1099 | } | |
1100 | ||
fcff4f10 PS |
1101 | if (left != 0) |
1102 | elems->parse_error = true; | |
1103 | ||
dd76986b JB |
1104 | return crc; |
1105 | } | |
1106 | ||
3abead59 | 1107 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
cec66283 | 1108 | bool bss_notify, bool enable_qos) |
5825fe10 JB |
1109 | { |
1110 | struct ieee80211_local *local = sdata->local; | |
1111 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 1112 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 1113 | int ac; |
cec66283 | 1114 | bool use_11b; |
239281f8 | 1115 | bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ |
aa837e1d | 1116 | int aCWmin, aCWmax; |
5825fe10 JB |
1117 | |
1118 | if (!local->ops->conf_tx) | |
1119 | return; | |
1120 | ||
54bcbc69 JB |
1121 | if (local->hw.queues < IEEE80211_NUM_ACS) |
1122 | return; | |
1123 | ||
5825fe10 JB |
1124 | memset(&qparam, 0, sizeof(qparam)); |
1125 | ||
55de908a JB |
1126 | rcu_read_lock(); |
1127 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1128 | use_11b = (chanctx_conf && | |
4bf88530 | 1129 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 1130 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 1131 | rcu_read_unlock(); |
5825fe10 | 1132 | |
239281f8 RL |
1133 | is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); |
1134 | ||
1f4ffde8 FZ |
1135 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1136 | aCWmax = 1023; | |
1137 | if (use_11b) | |
1138 | aCWmin = 31; | |
1139 | else | |
1140 | aCWmin = 15; | |
1141 | ||
1142 | /* Confiure old 802.11b/g medium access rules. */ | |
1143 | qparam.cw_max = aCWmax; | |
1144 | qparam.cw_min = aCWmin; | |
1145 | qparam.txop = 0; | |
1146 | qparam.aifs = 2; | |
aa837e1d | 1147 | |
1f4ffde8 FZ |
1148 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1149 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1150 | if (enable_qos) { |
1151 | switch (ac) { | |
1152 | case IEEE80211_AC_BK: | |
1153 | qparam.cw_max = aCWmax; | |
1154 | qparam.cw_min = aCWmin; | |
1155 | qparam.txop = 0; | |
239281f8 RL |
1156 | if (is_ocb) |
1157 | qparam.aifs = 9; | |
1158 | else | |
1159 | qparam.aifs = 7; | |
a8ce8544 SG |
1160 | break; |
1161 | /* never happens but let's not leave undefined */ | |
1162 | default: | |
1163 | case IEEE80211_AC_BE: | |
1164 | qparam.cw_max = aCWmax; | |
1165 | qparam.cw_min = aCWmin; | |
1166 | qparam.txop = 0; | |
239281f8 RL |
1167 | if (is_ocb) |
1168 | qparam.aifs = 6; | |
1169 | else | |
1170 | qparam.aifs = 3; | |
a8ce8544 SG |
1171 | break; |
1172 | case IEEE80211_AC_VI: | |
1173 | qparam.cw_max = aCWmin; | |
1174 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
239281f8 RL |
1175 | if (is_ocb) |
1176 | qparam.txop = 0; | |
1177 | else if (use_11b) | |
a8ce8544 SG |
1178 | qparam.txop = 6016/32; |
1179 | else | |
1180 | qparam.txop = 3008/32; | |
239281f8 RL |
1181 | |
1182 | if (is_ocb) | |
1183 | qparam.aifs = 3; | |
1184 | else | |
1185 | qparam.aifs = 2; | |
a8ce8544 SG |
1186 | break; |
1187 | case IEEE80211_AC_VO: | |
1188 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1189 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
239281f8 RL |
1190 | if (is_ocb) |
1191 | qparam.txop = 0; | |
1192 | else if (use_11b) | |
a8ce8544 SG |
1193 | qparam.txop = 3264/32; |
1194 | else | |
1195 | qparam.txop = 1504/32; | |
1196 | qparam.aifs = 2; | |
1197 | break; | |
1198 | } | |
aa837e1d | 1199 | } |
5825fe10 | 1200 | |
ab13315a KV |
1201 | qparam.uapsd = false; |
1202 | ||
54bcbc69 JB |
1203 | sdata->tx_conf[ac] = qparam; |
1204 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1205 | } |
e1b3ec1a | 1206 | |
f142c6b9 JB |
1207 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1208 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1209 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1210 | if (bss_notify) |
1211 | ieee80211_bss_info_change_notify(sdata, | |
1212 | BSS_CHANGED_QOS); | |
d9734979 | 1213 | } |
5825fe10 | 1214 | } |
e50db65c | 1215 | |
46900298 | 1216 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1217 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1218 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1219 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1220 | u32 tx_flags) | |
46900298 JB |
1221 | { |
1222 | struct ieee80211_local *local = sdata->local; | |
1223 | struct sk_buff *skb; | |
1224 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1225 | int err; |
46900298 | 1226 | |
15e230ab | 1227 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
744462a9 MS |
1228 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + |
1229 | 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN); | |
d15b8459 | 1230 | if (!skb) |
46900298 | 1231 | return; |
d15b8459 | 1232 | |
744462a9 | 1233 | skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); |
46900298 JB |
1234 | |
1235 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1236 | memset(mgmt, 0, 24 + 6); | |
1237 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1238 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1239 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1240 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1241 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1242 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1243 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1244 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1245 | if (extra) |
1246 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1247 | |
fffd0934 JB |
1248 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1249 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1250 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1251 | WARN_ON(err); | |
1252 | } | |
1253 | ||
1672c0e3 JB |
1254 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1255 | tx_flags; | |
62ae67be | 1256 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1257 | } |
1258 | ||
6ae16775 AQ |
1259 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1260 | const u8 *bssid, u16 stype, u16 reason, | |
1261 | bool send_frame, u8 *frame_buf) | |
1262 | { | |
1263 | struct ieee80211_local *local = sdata->local; | |
1264 | struct sk_buff *skb; | |
1265 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1266 | ||
1267 | /* build frame */ | |
1268 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1269 | mgmt->duration = 0; /* initialize only */ | |
1270 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1271 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1272 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1273 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1274 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1275 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1276 | ||
1277 | if (send_frame) { | |
1278 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1279 | IEEE80211_DEAUTH_FRAME_LEN); | |
1280 | if (!skb) | |
1281 | return; | |
1282 | ||
1283 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1284 | ||
1285 | /* copy in frame */ | |
1286 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1287 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1288 | ||
1289 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1290 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1291 | IEEE80211_SKB_CB(skb)->flags |= | |
1292 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1293 | ||
1294 | ieee80211_tx_skb(sdata, skb); | |
1295 | } | |
1296 | } | |
1297 | ||
c56ef672 DS |
1298 | static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, |
1299 | u8 *buffer, size_t buffer_len, | |
1300 | const u8 *ie, size_t ie_len, | |
1301 | enum ieee80211_band band, | |
1302 | u32 rate_mask, | |
1303 | struct cfg80211_chan_def *chandef, | |
1304 | size_t *offset) | |
de95a54b JB |
1305 | { |
1306 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1307 | u8 *pos = buffer, *end = buffer + buffer_len; |
c56ef672 | 1308 | size_t noffset; |
8e664fb3 | 1309 | int supp_rates_len, i; |
8dcb2003 JM |
1310 | u8 rates[32]; |
1311 | int num_rates; | |
1312 | int ext_rates_len; | |
2103dec1 SW |
1313 | int shift; |
1314 | u32 rate_flags; | |
40a11ca8 | 1315 | bool have_80mhz = false; |
de95a54b | 1316 | |
c56ef672 DS |
1317 | *offset = 0; |
1318 | ||
4d36ec58 | 1319 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1320 | if (WARN_ON_ONCE(!sband)) |
1321 | return 0; | |
de95a54b | 1322 | |
2103dec1 SW |
1323 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1324 | shift = ieee80211_chandef_get_shift(chandef); | |
1325 | ||
8dcb2003 JM |
1326 | num_rates = 0; |
1327 | for (i = 0; i < sband->n_bitrates; i++) { | |
1328 | if ((BIT(i) & rate_mask) == 0) | |
1329 | continue; /* skip rate */ | |
2103dec1 SW |
1330 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1331 | continue; | |
1332 | ||
1333 | rates[num_rates++] = | |
1334 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1335 | (1 << shift) * 5); | |
8dcb2003 JM |
1336 | } |
1337 | ||
1338 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1339 | |
c604b9f2 JB |
1340 | if (end - pos < 2 + supp_rates_len) |
1341 | goto out_err; | |
de95a54b | 1342 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1343 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1344 | memcpy(pos, rates, supp_rates_len); |
1345 | pos += supp_rates_len; | |
8e664fb3 JB |
1346 | |
1347 | /* insert "request information" if in custom IEs */ | |
1348 | if (ie && ie_len) { | |
1349 | static const u8 before_extrates[] = { | |
1350 | WLAN_EID_SSID, | |
1351 | WLAN_EID_SUPP_RATES, | |
1352 | WLAN_EID_REQUEST, | |
1353 | }; | |
1354 | noffset = ieee80211_ie_split(ie, ie_len, | |
1355 | before_extrates, | |
1356 | ARRAY_SIZE(before_extrates), | |
c56ef672 DS |
1357 | *offset); |
1358 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1359 | goto out_err; |
c56ef672 DS |
1360 | memcpy(pos, ie + *offset, noffset - *offset); |
1361 | pos += noffset - *offset; | |
1362 | *offset = noffset; | |
8e664fb3 JB |
1363 | } |
1364 | ||
8dcb2003 JM |
1365 | ext_rates_len = num_rates - supp_rates_len; |
1366 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1367 | if (end - pos < 2 + ext_rates_len) |
1368 | goto out_err; | |
8e664fb3 | 1369 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1370 | *pos++ = ext_rates_len; |
1371 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1372 | pos += ext_rates_len; | |
8e664fb3 JB |
1373 | } |
1374 | ||
2103dec1 | 1375 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1376 | if (end - pos < 3) |
1377 | goto out_err; | |
651b5225 JM |
1378 | *pos++ = WLAN_EID_DS_PARAMS; |
1379 | *pos++ = 1; | |
2103dec1 SW |
1380 | *pos++ = ieee80211_frequency_to_channel( |
1381 | chandef->chan->center_freq); | |
651b5225 JM |
1382 | } |
1383 | ||
8e664fb3 JB |
1384 | /* insert custom IEs that go before HT */ |
1385 | if (ie && ie_len) { | |
1386 | static const u8 before_ht[] = { | |
1387 | WLAN_EID_SSID, | |
1388 | WLAN_EID_SUPP_RATES, | |
1389 | WLAN_EID_REQUEST, | |
1390 | WLAN_EID_EXT_SUPP_RATES, | |
1391 | WLAN_EID_DS_PARAMS, | |
1392 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1393 | }; | |
1394 | noffset = ieee80211_ie_split(ie, ie_len, | |
1395 | before_ht, ARRAY_SIZE(before_ht), | |
c56ef672 DS |
1396 | *offset); |
1397 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1398 | goto out_err; |
c56ef672 DS |
1399 | memcpy(pos, ie + *offset, noffset - *offset); |
1400 | pos += noffset - *offset; | |
1401 | *offset = noffset; | |
de95a54b JB |
1402 | } |
1403 | ||
c604b9f2 JB |
1404 | if (sband->ht_cap.ht_supported) { |
1405 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1406 | goto out_err; | |
ef96a842 BG |
1407 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1408 | sband->ht_cap.cap); | |
c604b9f2 | 1409 | } |
5ef2d41a | 1410 | |
de95a54b JB |
1411 | /* |
1412 | * If adding more here, adjust code in main.c | |
1413 | * that calculates local->scan_ies_len. | |
1414 | */ | |
1415 | ||
4d952300 | 1416 | /* insert custom IEs that go before VHT */ |
8e664fb3 | 1417 | if (ie && ie_len) { |
4d952300 JB |
1418 | static const u8 before_vht[] = { |
1419 | WLAN_EID_SSID, | |
1420 | WLAN_EID_SUPP_RATES, | |
1421 | WLAN_EID_REQUEST, | |
1422 | WLAN_EID_EXT_SUPP_RATES, | |
1423 | WLAN_EID_DS_PARAMS, | |
1424 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1425 | WLAN_EID_HT_CAPABILITY, | |
1426 | WLAN_EID_BSS_COEX_2040, | |
1427 | WLAN_EID_EXT_CAPABILITY, | |
1428 | WLAN_EID_SSID_LIST, | |
1429 | WLAN_EID_CHANNEL_USAGE, | |
1430 | WLAN_EID_INTERWORKING, | |
1431 | /* mesh ID can't happen here */ | |
1432 | /* 60 GHz can't happen here right now */ | |
1433 | }; | |
1434 | noffset = ieee80211_ie_split(ie, ie_len, | |
1435 | before_vht, ARRAY_SIZE(before_vht), | |
c56ef672 DS |
1436 | *offset); |
1437 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1438 | goto out_err; |
c56ef672 DS |
1439 | memcpy(pos, ie + *offset, noffset - *offset); |
1440 | pos += noffset - *offset; | |
1441 | *offset = noffset; | |
de95a54b JB |
1442 | } |
1443 | ||
40a11ca8 JB |
1444 | /* Check if any channel in this sband supports at least 80 MHz */ |
1445 | for (i = 0; i < sband->n_channels; i++) { | |
fa44b988 AN |
1446 | if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | |
1447 | IEEE80211_CHAN_NO_80MHZ)) | |
1448 | continue; | |
1449 | ||
1450 | have_80mhz = true; | |
1451 | break; | |
40a11ca8 JB |
1452 | } |
1453 | ||
1454 | if (sband->vht_cap.vht_supported && have_80mhz) { | |
c604b9f2 JB |
1455 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) |
1456 | goto out_err; | |
ba0afa2f MP |
1457 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1458 | sband->vht_cap.cap); | |
c604b9f2 | 1459 | } |
ba0afa2f | 1460 | |
c604b9f2 JB |
1461 | return pos - buffer; |
1462 | out_err: | |
1463 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1464 | return pos - buffer; |
1465 | } | |
1466 | ||
c56ef672 DS |
1467 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
1468 | size_t buffer_len, | |
1469 | struct ieee80211_scan_ies *ie_desc, | |
1470 | const u8 *ie, size_t ie_len, | |
1471 | u8 bands_used, u32 *rate_masks, | |
1472 | struct cfg80211_chan_def *chandef) | |
1473 | { | |
1474 | size_t pos = 0, old_pos = 0, custom_ie_offset = 0; | |
1475 | int i; | |
1476 | ||
1477 | memset(ie_desc, 0, sizeof(*ie_desc)); | |
1478 | ||
1479 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { | |
1480 | if (bands_used & BIT(i)) { | |
1481 | pos += ieee80211_build_preq_ies_band(local, | |
1482 | buffer + pos, | |
1483 | buffer_len - pos, | |
1484 | ie, ie_len, i, | |
1485 | rate_masks[i], | |
1486 | chandef, | |
1487 | &custom_ie_offset); | |
1488 | ie_desc->ies[i] = buffer + old_pos; | |
1489 | ie_desc->len[i] = pos - old_pos; | |
1490 | old_pos = pos; | |
1491 | } | |
1492 | } | |
1493 | ||
1494 | /* add any remaining custom IEs */ | |
1495 | if (ie && ie_len) { | |
1496 | if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, | |
1497 | "not enough space for preq custom IEs\n")) | |
1498 | return pos; | |
1499 | memcpy(buffer + pos, ie + custom_ie_offset, | |
1500 | ie_len - custom_ie_offset); | |
1501 | ie_desc->common_ies = buffer + pos; | |
1502 | ie_desc->common_ie_len = ie_len - custom_ie_offset; | |
1503 | pos += ie_len - custom_ie_offset; | |
1504 | } | |
1505 | ||
1506 | return pos; | |
1507 | }; | |
1508 | ||
a619a4c0 | 1509 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
a344d677 JB |
1510 | const u8 *src, const u8 *dst, |
1511 | u32 ratemask, | |
6b77863b | 1512 | struct ieee80211_channel *chan, |
a619a4c0 | 1513 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1514 | const u8 *ie, size_t ie_len, |
1515 | bool directed) | |
46900298 JB |
1516 | { |
1517 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1518 | struct cfg80211_chan_def chandef; |
46900298 JB |
1519 | struct sk_buff *skb; |
1520 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1521 | int ies_len; |
c56ef672 DS |
1522 | u32 rate_masks[IEEE80211_NUM_BANDS] = {}; |
1523 | struct ieee80211_scan_ies dummy_ie_desc; | |
46900298 | 1524 | |
a806c558 PS |
1525 | /* |
1526 | * Do not send DS Channel parameter for directed probe requests | |
1527 | * in order to maximize the chance that we get a response. Some | |
1528 | * badly-behaved APs don't respond when this parameter is included. | |
1529 | */ | |
2103dec1 | 1530 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1531 | if (directed) |
2103dec1 | 1532 | chandef.chan = NULL; |
a806c558 | 1533 | else |
2103dec1 | 1534 | chandef.chan = chan; |
651b5225 | 1535 | |
a344d677 JB |
1536 | skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, |
1537 | 100 + ie_len); | |
5b2bbf75 | 1538 | if (!skb) |
b9a9ada1 JB |
1539 | return NULL; |
1540 | ||
c56ef672 | 1541 | rate_masks[chan->band] = ratemask; |
b9a9ada1 | 1542 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), |
c56ef672 DS |
1543 | skb_tailroom(skb), &dummy_ie_desc, |
1544 | ie, ie_len, BIT(chan->band), | |
1545 | rate_masks, &chandef); | |
b9a9ada1 | 1546 | skb_put(skb, ies_len); |
7c12ce8b | 1547 | |
46900298 | 1548 | if (dst) { |
7c12ce8b | 1549 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1550 | memcpy(mgmt->da, dst, ETH_ALEN); |
1551 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1552 | } |
46900298 | 1553 | |
62ae67be | 1554 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1555 | |
a619a4c0 JO |
1556 | return skb; |
1557 | } | |
1558 | ||
a344d677 JB |
1559 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, |
1560 | const u8 *src, const u8 *dst, | |
a619a4c0 | 1561 | const u8 *ssid, size_t ssid_len, |
a806c558 | 1562 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1563 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1564 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1565 | { |
1566 | struct sk_buff *skb; | |
1567 | ||
a344d677 | 1568 | skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel, |
6b77863b | 1569 | ssid, ssid_len, |
85a237fe | 1570 | ie, ie_len, directed); |
aad14ceb | 1571 | if (skb) { |
1672c0e3 | 1572 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1573 | if (scan) |
1574 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1575 | else | |
1576 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1577 | } |
46900298 JB |
1578 | } |
1579 | ||
2103dec1 | 1580 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1581 | struct ieee802_11_elems *elems, |
9ebb61a2 | 1582 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1583 | { |
1584 | struct ieee80211_supported_band *sband; | |
46900298 | 1585 | size_t num_rates; |
2103dec1 SW |
1586 | u32 supp_rates, rate_flags; |
1587 | int i, j, shift; | |
1588 | sband = sdata->local->hw.wiphy->bands[band]; | |
1589 | ||
1590 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1591 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1592 | |
4ee73f33 MK |
1593 | if (WARN_ON(!sband)) |
1594 | return 1; | |
46900298 | 1595 | |
46900298 JB |
1596 | num_rates = sband->n_bitrates; |
1597 | supp_rates = 0; | |
1598 | for (i = 0; i < elems->supp_rates_len + | |
1599 | elems->ext_supp_rates_len; i++) { | |
1600 | u8 rate = 0; | |
1601 | int own_rate; | |
9ebb61a2 | 1602 | bool is_basic; |
46900298 JB |
1603 | if (i < elems->supp_rates_len) |
1604 | rate = elems->supp_rates[i]; | |
1605 | else if (elems->ext_supp_rates) | |
1606 | rate = elems->ext_supp_rates | |
1607 | [i - elems->supp_rates_len]; | |
1608 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1609 | is_basic = !!(rate & 0x80); |
1610 | ||
1611 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1612 | continue; | |
1613 | ||
1614 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1615 | int brate; |
1616 | if ((rate_flags & sband->bitrates[j].flags) | |
1617 | != rate_flags) | |
1618 | continue; | |
1619 | ||
1620 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1621 | 1 << shift); | |
1622 | ||
1623 | if (brate == own_rate) { | |
46900298 | 1624 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1625 | if (basic_rates && is_basic) |
1626 | *basic_rates |= BIT(j); | |
1627 | } | |
1628 | } | |
46900298 JB |
1629 | } |
1630 | return supp_rates; | |
1631 | } | |
f2753ddb | 1632 | |
84f6a01c JB |
1633 | void ieee80211_stop_device(struct ieee80211_local *local) |
1634 | { | |
1635 | ieee80211_led_radio(local, false); | |
67408c8c | 1636 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1637 | |
1638 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1639 | |
1640 | flush_workqueue(local->workqueue); | |
678f415f | 1641 | drv_stop(local); |
84f6a01c JB |
1642 | } |
1643 | ||
f6837ba8 JB |
1644 | static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) |
1645 | { | |
1646 | struct ieee80211_sub_if_data *sdata; | |
1647 | struct ieee80211_chanctx *ctx; | |
1648 | ||
1649 | /* | |
1650 | * We get here if during resume the device can't be restarted properly. | |
1651 | * We might also get here if this happens during HW reset, which is a | |
1652 | * slightly different situation and we need to drop all connections in | |
1653 | * the latter case. | |
1654 | * | |
1655 | * Ask cfg80211 to turn off all interfaces, this will result in more | |
1656 | * warnings but at least we'll then get into a clean stopped state. | |
1657 | */ | |
1658 | ||
1659 | local->resuming = false; | |
1660 | local->suspended = false; | |
7584f88f | 1661 | local->in_reconfig = false; |
f6837ba8 JB |
1662 | |
1663 | /* scheduled scan clearly can't be running any more, but tell | |
1664 | * cfg80211 and clear local state | |
1665 | */ | |
1666 | ieee80211_sched_scan_end(local); | |
1667 | ||
1668 | list_for_each_entry(sdata, &local->interfaces, list) | |
1669 | sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; | |
1670 | ||
1671 | /* Mark channel contexts as not being in the driver any more to avoid | |
1672 | * removing them from the driver during the shutdown process... | |
1673 | */ | |
1674 | mutex_lock(&local->chanctx_mtx); | |
1675 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1676 | ctx->driver_present = false; | |
1677 | mutex_unlock(&local->chanctx_mtx); | |
1678 | ||
1679 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); | |
1680 | } | |
1681 | ||
153a5fc4 SG |
1682 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1683 | struct ieee80211_sub_if_data *sdata) | |
1684 | { | |
1685 | struct ieee80211_chanctx_conf *conf; | |
1686 | struct ieee80211_chanctx *ctx; | |
1687 | ||
1688 | if (!local->use_chanctx) | |
1689 | return; | |
1690 | ||
1691 | mutex_lock(&local->chanctx_mtx); | |
1692 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1693 | lockdep_is_held(&local->chanctx_mtx)); | |
1694 | if (conf) { | |
1695 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1696 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1697 | } | |
1698 | mutex_unlock(&local->chanctx_mtx); | |
1699 | } | |
1700 | ||
f2753ddb JB |
1701 | int ieee80211_reconfig(struct ieee80211_local *local) |
1702 | { | |
1703 | struct ieee80211_hw *hw = &local->hw; | |
1704 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1705 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1706 | struct sta_info *sta; |
2683d65b | 1707 | int res, i; |
d888130a | 1708 | bool reconfig_due_to_wowlan = false; |
d43c6b6e | 1709 | struct ieee80211_sub_if_data *sched_scan_sdata; |
6ea0a69c | 1710 | struct cfg80211_sched_scan_request *sched_scan_req; |
d43c6b6e | 1711 | bool sched_scan_stopped = false; |
b0485e9f | 1712 | bool suspended = local->suspended; |
d888130a | 1713 | |
0f8b8245 EP |
1714 | /* nothing to do if HW shouldn't run */ |
1715 | if (!local->open_count) | |
1716 | goto wake_up; | |
1717 | ||
8f21b0ad | 1718 | #ifdef CONFIG_PM |
b0485e9f | 1719 | if (suspended) |
ceb99fe0 | 1720 | local->resuming = true; |
f2753ddb | 1721 | |
eecc4800 | 1722 | if (local->wowlan) { |
b0485e9f EP |
1723 | /* |
1724 | * In the wowlan case, both mac80211 and the device | |
1725 | * are functional when the resume op is called, so | |
1726 | * clear local->suspended so the device could operate | |
1727 | * normally (e.g. pass rx frames). | |
1728 | */ | |
1729 | local->suspended = false; | |
eecc4800 | 1730 | res = drv_resume(local); |
27b3eb9c | 1731 | local->wowlan = false; |
eecc4800 JB |
1732 | if (res < 0) { |
1733 | local->resuming = false; | |
1734 | return res; | |
1735 | } | |
1736 | if (res == 0) | |
1737 | goto wake_up; | |
1738 | WARN_ON(res > 1); | |
1739 | /* | |
1740 | * res is 1, which means the driver requested | |
1741 | * to go through a regular reset on wakeup. | |
b0485e9f | 1742 | * restore local->suspended in this case. |
eecc4800 | 1743 | */ |
d888130a | 1744 | reconfig_due_to_wowlan = true; |
b0485e9f | 1745 | local->suspended = true; |
eecc4800 JB |
1746 | } |
1747 | #endif | |
f2753ddb | 1748 | |
43d6df00 EP |
1749 | /* |
1750 | * In case of hw_restart during suspend (without wowlan), | |
1751 | * cancel restart work, as we are reconfiguring the device | |
1752 | * anyway. | |
1753 | * Note that restart_work is scheduled on a frozen workqueue, | |
1754 | * so we can't deadlock in this case. | |
1755 | */ | |
1756 | if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) | |
1757 | cancel_work_sync(&local->restart_work); | |
1758 | ||
968a76ce EP |
1759 | local->started = false; |
1760 | ||
94f9b97b JB |
1761 | /* |
1762 | * Upon resume hardware can sometimes be goofy due to | |
1763 | * various platform / driver / bus issues, so restarting | |
1764 | * the device may at times not work immediately. Propagate | |
1765 | * the error. | |
1766 | */ | |
1767 | res = drv_start(local); | |
1768 | if (res) { | |
b0485e9f | 1769 | if (suspended) |
f6837ba8 JB |
1770 | WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); |
1771 | else | |
1772 | WARN(1, "Hardware became unavailable during restart.\n"); | |
1773 | ieee80211_handle_reconfig_failure(local); | |
94f9b97b | 1774 | return res; |
f2753ddb JB |
1775 | } |
1776 | ||
7f281975 YAP |
1777 | /* setup fragmentation threshold */ |
1778 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1779 | ||
1780 | /* setup RTS threshold */ | |
1781 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1782 | ||
1783 | /* reset coverage class */ | |
1784 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1785 | ||
94f9b97b JB |
1786 | ieee80211_led_radio(local, true); |
1787 | ieee80211_mod_tpt_led_trig(local, | |
1788 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1789 | ||
f2753ddb | 1790 | /* add interfaces */ |
4b6f1dd6 JB |
1791 | sdata = rtnl_dereference(local->monitor_sdata); |
1792 | if (sdata) { | |
3c3e21e7 JB |
1793 | /* in HW restart it exists already */ |
1794 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1795 | res = drv_add_interface(local, sdata); |
1796 | if (WARN_ON(res)) { | |
0c2bef46 | 1797 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
4b6f1dd6 JB |
1798 | synchronize_net(); |
1799 | kfree(sdata); | |
1800 | } | |
1801 | } | |
1802 | ||
f2753ddb JB |
1803 | list_for_each_entry(sdata, &local->interfaces, list) { |
1804 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1805 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
c8fff3dc | 1806 | ieee80211_sdata_running(sdata)) { |
7b7eab6f | 1807 | res = drv_add_interface(local, sdata); |
c8fff3dc LC |
1808 | if (WARN_ON(res)) |
1809 | break; | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | /* If adding any of the interfaces failed above, roll back and | |
1814 | * report failure. | |
1815 | */ | |
1816 | if (res) { | |
1817 | list_for_each_entry_continue_reverse(sdata, &local->interfaces, | |
1818 | list) | |
1819 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1820 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1821 | ieee80211_sdata_running(sdata)) | |
1822 | drv_remove_interface(local, sdata); | |
1823 | ieee80211_handle_reconfig_failure(local); | |
1824 | return res; | |
f2753ddb JB |
1825 | } |
1826 | ||
55de908a | 1827 | /* add channel contexts */ |
f0dea9c7 AS |
1828 | if (local->use_chanctx) { |
1829 | mutex_lock(&local->chanctx_mtx); | |
1830 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
5bcae31d MK |
1831 | if (ctx->replace_state != |
1832 | IEEE80211_CHANCTX_REPLACES_OTHER) | |
1833 | WARN_ON(drv_add_chanctx(local, ctx)); | |
f0dea9c7 | 1834 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1835 | |
7df180f7 ZG |
1836 | list_for_each_entry(sdata, &local->interfaces, list) { |
1837 | if (!ieee80211_sdata_running(sdata)) | |
1838 | continue; | |
1839 | ieee80211_assign_chanctx(local, sdata); | |
1840 | } | |
6352c87f | 1841 | |
7df180f7 ZG |
1842 | sdata = rtnl_dereference(local->monitor_sdata); |
1843 | if (sdata && ieee80211_sdata_running(sdata)) | |
1844 | ieee80211_assign_chanctx(local, sdata); | |
1845 | } | |
fe5f2559 | 1846 | |
f2753ddb | 1847 | /* add STAs back */ |
34e89507 JB |
1848 | mutex_lock(&local->sta_mtx); |
1849 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1850 | enum ieee80211_sta_state state; |
f09603a2 | 1851 | |
2e8d397e AN |
1852 | if (!sta->uploaded) |
1853 | continue; | |
1854 | ||
1855 | /* AP-mode stations will be added later */ | |
1856 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1857 | continue; | |
1858 | ||
1859 | for (state = IEEE80211_STA_NOTEXIST; | |
1860 | state < sta->sta_state; state++) | |
1861 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1862 | state + 1)); | |
f2753ddb | 1863 | } |
34e89507 | 1864 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1865 | |
2683d65b | 1866 | /* reconfigure tx conf */ |
54bcbc69 JB |
1867 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1868 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1869 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1870 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1871 | !ieee80211_sdata_running(sdata)) | |
1872 | continue; | |
f6f3def3 | 1873 | |
54bcbc69 JB |
1874 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1875 | drv_conf_tx(local, sdata, i, | |
1876 | &sdata->tx_conf[i]); | |
1877 | } | |
f6f3def3 | 1878 | } |
2683d65b | 1879 | |
f2753ddb JB |
1880 | /* reconfigure hardware */ |
1881 | ieee80211_hw_config(local, ~0); | |
1882 | ||
f2753ddb | 1883 | ieee80211_configure_filter(local); |
f2753ddb JB |
1884 | |
1885 | /* Finally also reconfigure all the BSS information */ | |
1886 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1887 | u32 changed; |
1888 | ||
9607e6b6 | 1889 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1890 | continue; |
ac8dd506 JB |
1891 | |
1892 | /* common change flags for all interface types */ | |
1893 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1894 | BSS_CHANGED_ERP_PREAMBLE | | |
1895 | BSS_CHANGED_ERP_SLOT | | |
1896 | BSS_CHANGED_HT | | |
1897 | BSS_CHANGED_BASIC_RATES | | |
1898 | BSS_CHANGED_BEACON_INT | | |
1899 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1900 | BSS_CHANGED_CQM | |
55de47f6 | 1901 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1902 | BSS_CHANGED_IDLE | |
1903 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1904 | |
f2753ddb JB |
1905 | switch (sdata->vif.type) { |
1906 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1907 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1908 | BSS_CHANGED_ARP_FILTER | |
1909 | BSS_CHANGED_PS; | |
c65dd147 | 1910 | |
989c6505 AB |
1911 | /* Re-send beacon info report to the driver */ |
1912 | if (sdata->u.mgd.have_beacon) | |
1913 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1914 | |
8d61ffa5 | 1915 | sdata_lock(sdata); |
ac8dd506 | 1916 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1917 | sdata_unlock(sdata); |
ac8dd506 | 1918 | break; |
6e0bd6c3 | 1919 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1920 | changed |= BSS_CHANGED_OCB; |
1921 | ieee80211_bss_info_change_notify(sdata, changed); | |
6e0bd6c3 | 1922 | break; |
f2753ddb | 1923 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1924 | changed |= BSS_CHANGED_IBSS; |
1925 | /* fall through */ | |
f2753ddb | 1926 | case NL80211_IFTYPE_AP: |
339afbf4 | 1927 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1928 | |
1041638f | 1929 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1930 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1931 | ||
1041638f JB |
1932 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1933 | drv_start_ap(local, sdata); | |
1934 | } | |
1935 | ||
7827493b | 1936 | /* fall through */ |
f2753ddb | 1937 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1938 | if (sdata->vif.bss_conf.enable_beacon) { |
1939 | changed |= BSS_CHANGED_BEACON | | |
1940 | BSS_CHANGED_BEACON_ENABLED; | |
1941 | ieee80211_bss_info_change_notify(sdata, changed); | |
1942 | } | |
f2753ddb JB |
1943 | break; |
1944 | case NL80211_IFTYPE_WDS: | |
f2753ddb JB |
1945 | case NL80211_IFTYPE_AP_VLAN: |
1946 | case NL80211_IFTYPE_MONITOR: | |
98104fde | 1947 | case NL80211_IFTYPE_P2P_DEVICE: |
b205786e | 1948 | /* nothing to do */ |
f142c6b9 | 1949 | break; |
f2753ddb | 1950 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1951 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1952 | case NL80211_IFTYPE_P2P_CLIENT: |
1953 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1954 | WARN_ON(1); |
1955 | break; | |
1956 | } | |
1957 | } | |
1958 | ||
4a733ef1 | 1959 | ieee80211_recalc_ps(local); |
8e1b23b9 | 1960 | |
6e1b1b24 EP |
1961 | /* |
1962 | * The sta might be in psm against the ap (e.g. because | |
1963 | * this was the state before a hw restart), so we | |
1964 | * explicitly send a null packet in order to make sure | |
1965 | * it'll sync against the ap (and get out of psm). | |
1966 | */ | |
1967 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1968 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1969 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1970 | continue; | |
20f544ee JB |
1971 | if (!sdata->u.mgd.associated) |
1972 | continue; | |
6e1b1b24 | 1973 | |
076cdcb1 | 1974 | ieee80211_send_nullfunc(local, sdata, false); |
6e1b1b24 EP |
1975 | } |
1976 | } | |
1977 | ||
2e8d397e AN |
1978 | /* APs are now beaconing, add back stations */ |
1979 | mutex_lock(&local->sta_mtx); | |
1980 | list_for_each_entry(sta, &local->sta_list, list) { | |
1981 | enum ieee80211_sta_state state; | |
1982 | ||
1983 | if (!sta->uploaded) | |
1984 | continue; | |
1985 | ||
1986 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1987 | continue; | |
1988 | ||
1989 | for (state = IEEE80211_STA_NOTEXIST; | |
1990 | state < sta->sta_state; state++) | |
1991 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1992 | state + 1)); | |
1993 | } | |
1994 | mutex_unlock(&local->sta_mtx); | |
1995 | ||
7b21aea0 | 1996 | /* add back keys */ |
f9dca80b MK |
1997 | list_for_each_entry(sdata, &local->interfaces, list) |
1998 | ieee80211_reset_crypto_tx_tailroom(sdata); | |
1999 | ||
7b21aea0 ES |
2000 | list_for_each_entry(sdata, &local->interfaces, list) |
2001 | if (ieee80211_sdata_running(sdata)) | |
2002 | ieee80211_enable_keys(sdata); | |
2003 | ||
0d440ea2 EP |
2004 | /* Reconfigure sched scan if it was interrupted by FW restart */ |
2005 | mutex_lock(&local->mtx); | |
2006 | sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, | |
2007 | lockdep_is_held(&local->mtx)); | |
2008 | sched_scan_req = rcu_dereference_protected(local->sched_scan_req, | |
2009 | lockdep_is_held(&local->mtx)); | |
2010 | if (sched_scan_sdata && sched_scan_req) | |
2011 | /* | |
2012 | * Sched scan stopped, but we don't want to report it. Instead, | |
2013 | * we're trying to reschedule. However, if more than one scan | |
2014 | * plan was set, we cannot reschedule since we don't know which | |
2015 | * scan plan was currently running (and some scan plans may have | |
2016 | * already finished). | |
2017 | */ | |
2018 | if (sched_scan_req->n_scan_plans > 1 || | |
2019 | __ieee80211_request_sched_scan_start(sched_scan_sdata, | |
2020 | sched_scan_req)) | |
2021 | sched_scan_stopped = true; | |
2022 | mutex_unlock(&local->mtx); | |
2023 | ||
2024 | if (sched_scan_stopped) | |
2025 | cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); | |
2026 | ||
c6209488 | 2027 | wake_up: |
04800ada AN |
2028 | local->in_reconfig = false; |
2029 | barrier(); | |
2030 | ||
3c3e21e7 JB |
2031 | if (local->monitors == local->open_count && local->monitors > 0) |
2032 | ieee80211_add_virtual_monitor(local); | |
2033 | ||
2a419056 JB |
2034 | /* |
2035 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
2036 | * sessions can be established after a resume. | |
2037 | * | |
2038 | * Also tear down aggregation sessions since reconfiguring | |
2039 | * them in a hardware restart scenario is not easily done | |
2040 | * right now, and the hardware will have lost information | |
2041 | * about the sessions, but we and the AP still think they | |
2042 | * are active. This is really a workaround though. | |
2043 | */ | |
30686bf7 | 2044 | if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { |
2a419056 JB |
2045 | mutex_lock(&local->sta_mtx); |
2046 | ||
2047 | list_for_each_entry(sta, &local->sta_list, list) { | |
27392719 EP |
2048 | if (!local->resuming) |
2049 | ieee80211_sta_tear_down_BA_sessions( | |
2050 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 2051 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 2052 | } |
2a419056 JB |
2053 | |
2054 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 2055 | } |
74e2bd1f | 2056 | |
445ea4e8 | 2057 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
2058 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
2059 | false); | |
f2753ddb | 2060 | |
5bb644a0 JB |
2061 | /* |
2062 | * If this is for hw restart things are still running. | |
2063 | * We may want to change that later, however. | |
2064 | */ | |
b0485e9f | 2065 | if (local->open_count && (!suspended || reconfig_due_to_wowlan)) |
cf2c92d8 | 2066 | drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); |
8f21b0ad | 2067 | |
b0485e9f | 2068 | if (!suspended) |
5bb644a0 JB |
2069 | return 0; |
2070 | ||
2071 | #ifdef CONFIG_PM | |
ceb99fe0 | 2072 | /* first set suspended false, then resuming */ |
5bb644a0 | 2073 | local->suspended = false; |
ceb99fe0 JB |
2074 | mb(); |
2075 | local->resuming = false; | |
5bb644a0 | 2076 | |
9120d94e LC |
2077 | /* It's possible that we don't handle the scan completion in |
2078 | * time during suspend, so if it's still marked as completed | |
2079 | * here, queue the work and flush it to clean things up. | |
2080 | * Instead of calling the worker function directly here, we | |
2081 | * really queue it to avoid potential races with other flows | |
2082 | * scheduling the same work. | |
2083 | */ | |
2084 | if (test_bit(SCAN_COMPLETED, &local->scanning)) { | |
2085 | ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0); | |
2086 | flush_delayed_work(&local->scan_work); | |
2087 | } | |
2088 | ||
0f8b8245 | 2089 | if (local->open_count && !reconfig_due_to_wowlan) |
cf2c92d8 EP |
2090 | drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); |
2091 | ||
b8360ab8 JB |
2092 | list_for_each_entry(sdata, &local->interfaces, list) { |
2093 | if (!ieee80211_sdata_running(sdata)) | |
2094 | continue; | |
2095 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2096 | ieee80211_sta_restart(sdata); | |
2097 | } | |
2098 | ||
26d59535 | 2099 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
2100 | #else |
2101 | WARN_ON(1); | |
2102 | #endif | |
d43c6b6e | 2103 | |
f2753ddb JB |
2104 | return 0; |
2105 | } | |
42935eca | 2106 | |
95acac61 JB |
2107 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
2108 | { | |
2109 | struct ieee80211_sub_if_data *sdata; | |
2110 | struct ieee80211_local *local; | |
2111 | struct ieee80211_key *key; | |
2112 | ||
2113 | if (WARN_ON(!vif)) | |
2114 | return; | |
2115 | ||
2116 | sdata = vif_to_sdata(vif); | |
2117 | local = sdata->local; | |
2118 | ||
2119 | if (WARN_ON(!local->resuming)) | |
2120 | return; | |
2121 | ||
2122 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
2123 | return; | |
2124 | ||
2125 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
2126 | ||
2127 | mutex_lock(&local->key_mtx); | |
2128 | list_for_each_entry(key, &sdata->key_list, list) | |
2129 | key->flags |= KEY_FLAG_TAINTED; | |
2130 | mutex_unlock(&local->key_mtx); | |
2131 | } | |
2132 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
2133 | ||
04ecd257 | 2134 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 2135 | { |
04ecd257 JB |
2136 | struct ieee80211_local *local = sdata->local; |
2137 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2138 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 2139 | |
04ecd257 | 2140 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 2141 | |
04ecd257 JB |
2142 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
2143 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 2144 | |
c189a685 AO |
2145 | /* |
2146 | * This function can be called from a work, thus it may be possible | |
2147 | * that the chanctx_conf is removed (due to a disconnection, for | |
2148 | * example). | |
2149 | * So nothing should be done in such case. | |
2150 | */ | |
2151 | if (!chanctx_conf) | |
5d8e4237 | 2152 | goto unlock; |
0f78231b | 2153 | |
04ecd257 JB |
2154 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
2155 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 2156 | unlock: |
04ecd257 | 2157 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 2158 | } |
8e664fb3 | 2159 | |
21f659bf EP |
2160 | void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) |
2161 | { | |
2162 | struct ieee80211_local *local = sdata->local; | |
2163 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2164 | struct ieee80211_chanctx *chanctx; | |
2165 | ||
2166 | mutex_lock(&local->chanctx_mtx); | |
2167 | ||
2168 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
2169 | lockdep_is_held(&local->chanctx_mtx)); | |
2170 | ||
2171 | if (WARN_ON_ONCE(!chanctx_conf)) | |
2172 | goto unlock; | |
2173 | ||
2174 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); | |
2175 | ieee80211_recalc_chanctx_min_def(local, chanctx); | |
2176 | unlock: | |
2177 | mutex_unlock(&local->chanctx_mtx); | |
2178 | } | |
2179 | ||
8e664fb3 JB |
2180 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) |
2181 | { | |
2182 | size_t pos = offset; | |
2183 | ||
2184 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
2185 | pos += 2 + ies[pos + 1]; | |
2186 | ||
2187 | return pos; | |
2188 | } | |
615f7b9b MV |
2189 | |
2190 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
2191 | int rssi_min_thold, | |
2192 | int rssi_max_thold) | |
2193 | { | |
2194 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
2195 | ||
2196 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2197 | return; | |
2198 | ||
2199 | /* | |
2200 | * Scale up threshold values before storing it, as the RSSI averaging | |
2201 | * algorithm uses a scaled up value as well. Change this scaling | |
2202 | * factor if the RSSI averaging algorithm changes. | |
2203 | */ | |
2204 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
2205 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
2206 | } | |
2207 | ||
2208 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
2209 | int rssi_min_thold, | |
2210 | int rssi_max_thold) | |
2211 | { | |
2212 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2213 | ||
2214 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
2215 | rssi_min_thold > rssi_max_thold); | |
2216 | ||
2217 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
2218 | rssi_max_thold); | |
2219 | } | |
2220 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
2221 | ||
2222 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
2223 | { | |
2224 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2225 | ||
2226 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
2227 | } | |
2228 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 2229 | |
ef96a842 | 2230 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
2231 | u16 cap) |
2232 | { | |
2233 | __le16 tmp; | |
2234 | ||
2235 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
2236 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
2237 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
2238 | ||
2239 | /* capability flags */ | |
2240 | tmp = cpu_to_le16(cap); | |
2241 | memcpy(pos, &tmp, sizeof(u16)); | |
2242 | pos += sizeof(u16); | |
2243 | ||
2244 | /* AMPDU parameters */ | |
ef96a842 BG |
2245 | *pos++ = ht_cap->ampdu_factor | |
2246 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
2247 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
2248 | ||
2249 | /* MCS set */ | |
ef96a842 BG |
2250 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
2251 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
2252 | |
2253 | /* extended capabilities */ | |
2254 | pos += sizeof(__le16); | |
2255 | ||
2256 | /* BF capabilities */ | |
2257 | pos += sizeof(__le32); | |
2258 | ||
2259 | /* antenna selection */ | |
2260 | pos += sizeof(u8); | |
2261 | ||
2262 | return pos; | |
2263 | } | |
2264 | ||
ba0afa2f | 2265 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 2266 | u32 cap) |
ba0afa2f MP |
2267 | { |
2268 | __le32 tmp; | |
2269 | ||
2270 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
2271 | *pos++ = sizeof(struct ieee80211_vht_cap); |
2272 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
2273 | |
2274 | /* capability flags */ | |
2275 | tmp = cpu_to_le32(cap); | |
2276 | memcpy(pos, &tmp, sizeof(u32)); | |
2277 | pos += sizeof(u32); | |
2278 | ||
2279 | /* VHT MCS set */ | |
2280 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
2281 | pos += sizeof(vht_cap->vht_mcs); | |
2282 | ||
2283 | return pos; | |
2284 | } | |
2285 | ||
074d46d1 | 2286 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 2287 | const struct cfg80211_chan_def *chandef, |
57f255f5 | 2288 | u16 prot_mode, bool rifs_mode) |
42e7aa77 | 2289 | { |
074d46d1 | 2290 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 2291 | /* Build HT Information */ |
074d46d1 JB |
2292 | *pos++ = WLAN_EID_HT_OPERATION; |
2293 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
2294 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
2295 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
2296 | chandef->chan->center_freq); | |
2297 | switch (chandef->width) { | |
2298 | case NL80211_CHAN_WIDTH_160: | |
2299 | case NL80211_CHAN_WIDTH_80P80: | |
2300 | case NL80211_CHAN_WIDTH_80: | |
2301 | case NL80211_CHAN_WIDTH_40: | |
2302 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
2303 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2304 | else | |
2305 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 2306 | break; |
42e7aa77 | 2307 | default: |
074d46d1 | 2308 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
2309 | break; |
2310 | } | |
aee286c2 | 2311 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
2312 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
2313 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 2314 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 2315 | |
57f255f5 AN |
2316 | if (rifs_mode) |
2317 | ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; | |
2318 | ||
431e3154 | 2319 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 2320 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
2321 | |
2322 | /* It seems that Basic MCS set and Supported MCS set | |
2323 | are identical for the first 10 bytes */ | |
074d46d1 JB |
2324 | memset(&ht_oper->basic_set, 0, 16); |
2325 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 2326 | |
074d46d1 | 2327 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
2328 | } |
2329 | ||
fb28ec0c AN |
2330 | u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
2331 | const struct cfg80211_chan_def *chandef) | |
2332 | { | |
2333 | struct ieee80211_vht_operation *vht_oper; | |
2334 | ||
2335 | *pos++ = WLAN_EID_VHT_OPERATION; | |
2336 | *pos++ = sizeof(struct ieee80211_vht_operation); | |
2337 | vht_oper = (struct ieee80211_vht_operation *)pos; | |
2338 | vht_oper->center_freq_seg1_idx = ieee80211_frequency_to_channel( | |
2339 | chandef->center_freq1); | |
2340 | if (chandef->center_freq2) | |
2341 | vht_oper->center_freq_seg2_idx = | |
2342 | ieee80211_frequency_to_channel(chandef->center_freq2); | |
f020ae40 CYY |
2343 | else |
2344 | vht_oper->center_freq_seg2_idx = 0x00; | |
fb28ec0c AN |
2345 | |
2346 | switch (chandef->width) { | |
2347 | case NL80211_CHAN_WIDTH_160: | |
2348 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ; | |
2349 | break; | |
2350 | case NL80211_CHAN_WIDTH_80P80: | |
2351 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ; | |
2352 | break; | |
2353 | case NL80211_CHAN_WIDTH_80: | |
2354 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; | |
2355 | break; | |
2356 | default: | |
2357 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; | |
2358 | break; | |
2359 | } | |
2360 | ||
2361 | /* don't require special VHT peer rates */ | |
2362 | vht_oper->basic_mcs_set = cpu_to_le16(0xffff); | |
2363 | ||
2364 | return pos + sizeof(struct ieee80211_vht_operation); | |
2365 | } | |
2366 | ||
4bf88530 | 2367 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 2368 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 2369 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
2370 | { |
2371 | enum nl80211_channel_type channel_type; | |
2372 | ||
4bf88530 JB |
2373 | if (!ht_oper) { |
2374 | cfg80211_chandef_create(chandef, control_chan, | |
2375 | NL80211_CHAN_NO_HT); | |
2376 | return; | |
2377 | } | |
42e7aa77 | 2378 | |
074d46d1 | 2379 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2380 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2381 | channel_type = NL80211_CHAN_HT20; | |
2382 | break; | |
2383 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2384 | channel_type = NL80211_CHAN_HT40PLUS; | |
2385 | break; | |
2386 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2387 | channel_type = NL80211_CHAN_HT40MINUS; | |
2388 | break; | |
2389 | default: | |
2390 | channel_type = NL80211_CHAN_NO_HT; | |
2391 | } | |
2392 | ||
4bf88530 | 2393 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
2394 | } |
2395 | ||
abcff6ef JD |
2396 | void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, |
2397 | const struct ieee80211_vht_operation *oper, | |
2398 | struct cfg80211_chan_def *chandef) | |
2399 | { | |
2400 | if (!oper) | |
2401 | return; | |
2402 | ||
2403 | chandef->chan = control_chan; | |
2404 | ||
2405 | switch (oper->chan_width) { | |
2406 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
2407 | break; | |
2408 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
2409 | chandef->width = NL80211_CHAN_WIDTH_80; | |
2410 | break; | |
2411 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
2412 | chandef->width = NL80211_CHAN_WIDTH_160; | |
2413 | break; | |
2414 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
2415 | chandef->width = NL80211_CHAN_WIDTH_80P80; | |
2416 | break; | |
2417 | default: | |
2418 | break; | |
2419 | } | |
2420 | ||
2421 | chandef->center_freq1 = | |
2422 | ieee80211_channel_to_frequency(oper->center_freq_seg1_idx, | |
2423 | control_chan->band); | |
2424 | chandef->center_freq2 = | |
2425 | ieee80211_channel_to_frequency(oper->center_freq_seg2_idx, | |
2426 | control_chan->band); | |
2427 | } | |
2428 | ||
2103dec1 SW |
2429 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2430 | const struct ieee80211_supported_band *sband, | |
2431 | const u8 *srates, int srates_len, u32 *rates) | |
2432 | { | |
2433 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2434 | int shift = ieee80211_chandef_get_shift(chandef); | |
2435 | struct ieee80211_rate *br; | |
2436 | int brate, rate, i, j, count = 0; | |
2437 | ||
2438 | *rates = 0; | |
2439 | ||
2440 | for (i = 0; i < srates_len; i++) { | |
2441 | rate = srates[i] & 0x7f; | |
2442 | ||
2443 | for (j = 0; j < sband->n_bitrates; j++) { | |
2444 | br = &sband->bitrates[j]; | |
2445 | if ((rate_flags & br->flags) != rate_flags) | |
2446 | continue; | |
2447 | ||
2448 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2449 | if (brate == rate) { | |
2450 | *rates |= BIT(j); | |
2451 | count++; | |
2452 | break; | |
2453 | } | |
2454 | } | |
2455 | } | |
2456 | return count; | |
2457 | } | |
2458 | ||
fc8a7321 | 2459 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2460 | struct sk_buff *skb, bool need_basic, |
2461 | enum ieee80211_band band) | |
768db343 | 2462 | { |
768db343 AN |
2463 | struct ieee80211_local *local = sdata->local; |
2464 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2465 | int rate, shift; |
768db343 | 2466 | u8 i, rates, *pos; |
fc8a7321 | 2467 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2468 | u32 rate_flags; |
768db343 | 2469 | |
2103dec1 SW |
2470 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2471 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2472 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2473 | rates = 0; |
2474 | for (i = 0; i < sband->n_bitrates; i++) { | |
2475 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2476 | continue; | |
2477 | rates++; | |
2478 | } | |
768db343 AN |
2479 | if (rates > 8) |
2480 | rates = 8; | |
2481 | ||
2482 | if (skb_tailroom(skb) < rates + 2) | |
2483 | return -ENOMEM; | |
2484 | ||
2485 | pos = skb_put(skb, rates + 2); | |
2486 | *pos++ = WLAN_EID_SUPP_RATES; | |
2487 | *pos++ = rates; | |
2488 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2489 | u8 basic = 0; |
2103dec1 SW |
2490 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2491 | continue; | |
2492 | ||
657c3e0c AN |
2493 | if (need_basic && basic_rates & BIT(i)) |
2494 | basic = 0x80; | |
768db343 | 2495 | rate = sband->bitrates[i].bitrate; |
2103dec1 SW |
2496 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2497 | 5 * (1 << shift)); | |
2498 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2499 | } |
2500 | ||
2501 | return 0; | |
2502 | } | |
2503 | ||
fc8a7321 | 2504 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2505 | struct sk_buff *skb, bool need_basic, |
2506 | enum ieee80211_band band) | |
768db343 | 2507 | { |
768db343 AN |
2508 | struct ieee80211_local *local = sdata->local; |
2509 | struct ieee80211_supported_band *sband; | |
cc63ec76 | 2510 | int rate, shift; |
768db343 | 2511 | u8 i, exrates, *pos; |
fc8a7321 | 2512 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2513 | u32 rate_flags; |
2514 | ||
2515 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2516 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2517 | |
6b77863b | 2518 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2519 | exrates = 0; |
2520 | for (i = 0; i < sband->n_bitrates; i++) { | |
2521 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2522 | continue; | |
2523 | exrates++; | |
2524 | } | |
2525 | ||
768db343 AN |
2526 | if (exrates > 8) |
2527 | exrates -= 8; | |
2528 | else | |
2529 | exrates = 0; | |
2530 | ||
2531 | if (skb_tailroom(skb) < exrates + 2) | |
2532 | return -ENOMEM; | |
2533 | ||
2534 | if (exrates) { | |
2535 | pos = skb_put(skb, exrates + 2); | |
2536 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2537 | *pos++ = exrates; | |
2538 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c | 2539 | u8 basic = 0; |
2103dec1 SW |
2540 | if ((rate_flags & sband->bitrates[i].flags) |
2541 | != rate_flags) | |
2542 | continue; | |
657c3e0c AN |
2543 | if (need_basic && basic_rates & BIT(i)) |
2544 | basic = 0x80; | |
2103dec1 SW |
2545 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2546 | 5 * (1 << shift)); | |
2547 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2548 | } |
2549 | } | |
2550 | return 0; | |
2551 | } | |
1dae27f8 WYG |
2552 | |
2553 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2554 | { | |
2555 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2556 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2557 | ||
be6bcabc WYG |
2558 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2559 | /* non-managed type inferfaces */ | |
2560 | return 0; | |
2561 | } | |
338c17ae | 2562 | return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); |
1dae27f8 | 2563 | } |
0d8a0a17 | 2564 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2565 | |
2566 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2567 | { | |
2568 | if (!mcs) | |
2569 | return 1; | |
2570 | ||
2571 | /* TODO: consider rx_highest */ | |
2572 | ||
2573 | if (mcs->rx_mask[3]) | |
2574 | return 4; | |
2575 | if (mcs->rx_mask[2]) | |
2576 | return 3; | |
2577 | if (mcs->rx_mask[1]) | |
2578 | return 2; | |
2579 | return 1; | |
2580 | } | |
f4bda337 TP |
2581 | |
2582 | /** | |
2583 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2584 | * @local: mac80211 hw info struct | |
2585 | * @status: RX status | |
2586 | * @mpdu_len: total MPDU length (including FCS) | |
2587 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2588 | * | |
2589 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2590 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2591 | * the timestamp to TSF at beginning of MPDU reception. | |
2592 | */ | |
2593 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2594 | struct ieee80211_rx_status *status, | |
2595 | unsigned int mpdu_len, | |
2596 | unsigned int mpdu_offset) | |
2597 | { | |
2598 | u64 ts = status->mactime; | |
2599 | struct rate_info ri; | |
2600 | u16 rate; | |
2601 | ||
2602 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2603 | return 0; | |
2604 | ||
2605 | memset(&ri, 0, sizeof(ri)); | |
2606 | ||
2607 | /* Fill cfg80211 rate info */ | |
2608 | if (status->flag & RX_FLAG_HT) { | |
2609 | ri.mcs = status->rate_idx; | |
2610 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2611 | if (status->flag & RX_FLAG_40MHZ) | |
b51f3bee JB |
2612 | ri.bw = RATE_INFO_BW_40; |
2613 | else | |
2614 | ri.bw = RATE_INFO_BW_20; | |
f4bda337 TP |
2615 | if (status->flag & RX_FLAG_SHORT_GI) |
2616 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2617 | } else if (status->flag & RX_FLAG_VHT) { |
2618 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2619 | ri.mcs = status->rate_idx; | |
2620 | ri.nss = status->vht_nss; | |
2621 | if (status->flag & RX_FLAG_40MHZ) | |
b51f3bee JB |
2622 | ri.bw = RATE_INFO_BW_40; |
2623 | else if (status->vht_flag & RX_VHT_FLAG_80MHZ) | |
2624 | ri.bw = RATE_INFO_BW_80; | |
2625 | else if (status->vht_flag & RX_VHT_FLAG_160MHZ) | |
2626 | ri.bw = RATE_INFO_BW_160; | |
2627 | else | |
2628 | ri.bw = RATE_INFO_BW_20; | |
5614618e JB |
2629 | if (status->flag & RX_FLAG_SHORT_GI) |
2630 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2631 | } else { |
2632 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2633 | int shift = 0; |
2634 | int bitrate; | |
2635 | ||
b51f3bee | 2636 | if (status->flag & RX_FLAG_10MHZ) { |
2103dec1 | 2637 | shift = 1; |
b51f3bee JB |
2638 | ri.bw = RATE_INFO_BW_10; |
2639 | } else if (status->flag & RX_FLAG_5MHZ) { | |
2103dec1 | 2640 | shift = 2; |
b51f3bee JB |
2641 | ri.bw = RATE_INFO_BW_5; |
2642 | } else { | |
2643 | ri.bw = RATE_INFO_BW_20; | |
2644 | } | |
f4bda337 TP |
2645 | |
2646 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2647 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2648 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4bda337 TP |
2649 | } |
2650 | ||
2651 | rate = cfg80211_calculate_bitrate(&ri); | |
d86aa4f8 JB |
2652 | if (WARN_ONCE(!rate, |
2653 | "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n", | |
2654 | status->flag, status->rate_idx, status->vht_nss)) | |
2655 | return 0; | |
f4bda337 TP |
2656 | |
2657 | /* rewind from end of MPDU */ | |
2658 | if (status->flag & RX_FLAG_MACTIME_END) | |
2659 | ts -= mpdu_len * 8 * 10 / rate; | |
2660 | ||
2661 | ts += mpdu_offset * 8 * 10 / rate; | |
2662 | ||
2663 | return ts; | |
2664 | } | |
164eb02d SW |
2665 | |
2666 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2667 | { | |
2668 | struct ieee80211_sub_if_data *sdata; | |
d2859df5 | 2669 | struct cfg80211_chan_def chandef; |
164eb02d | 2670 | |
34a3740d | 2671 | mutex_lock(&local->mtx); |
164eb02d SW |
2672 | mutex_lock(&local->iflist_mtx); |
2673 | list_for_each_entry(sdata, &local->interfaces, list) { | |
34a3740d JB |
2674 | /* it might be waiting for the local->mtx, but then |
2675 | * by the time it gets it, sdata->wdev.cac_started | |
2676 | * will no longer be true | |
2677 | */ | |
2678 | cancel_delayed_work(&sdata->dfs_cac_timer_work); | |
164eb02d SW |
2679 | |
2680 | if (sdata->wdev.cac_started) { | |
d2859df5 | 2681 | chandef = sdata->vif.bss_conf.chandef; |
164eb02d SW |
2682 | ieee80211_vif_release_channel(sdata); |
2683 | cfg80211_cac_event(sdata->dev, | |
d2859df5 | 2684 | &chandef, |
164eb02d SW |
2685 | NL80211_RADAR_CAC_ABORTED, |
2686 | GFP_KERNEL); | |
2687 | } | |
2688 | } | |
2689 | mutex_unlock(&local->iflist_mtx); | |
34a3740d | 2690 | mutex_unlock(&local->mtx); |
164eb02d SW |
2691 | } |
2692 | ||
2693 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2694 | { | |
2695 | struct ieee80211_local *local = | |
2696 | container_of(work, struct ieee80211_local, radar_detected_work); | |
84a3d1c9 | 2697 | struct cfg80211_chan_def chandef = local->hw.conf.chandef; |
486cf4c0 MK |
2698 | struct ieee80211_chanctx *ctx; |
2699 | int num_chanctx = 0; | |
2700 | ||
2701 | mutex_lock(&local->chanctx_mtx); | |
2702 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
2703 | if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) | |
2704 | continue; | |
2705 | ||
2706 | num_chanctx++; | |
2707 | chandef = ctx->conf.def; | |
2708 | } | |
2709 | mutex_unlock(&local->chanctx_mtx); | |
164eb02d SW |
2710 | |
2711 | ieee80211_dfs_cac_cancel(local); | |
2712 | ||
486cf4c0 MK |
2713 | if (num_chanctx > 1) |
2714 | /* XXX: multi-channel is not supported yet */ | |
164eb02d | 2715 | WARN_ON(1); |
84a3d1c9 | 2716 | else |
164eb02d | 2717 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
164eb02d SW |
2718 | } |
2719 | ||
2720 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2721 | { | |
2722 | struct ieee80211_local *local = hw_to_local(hw); | |
2723 | ||
2724 | trace_api_radar_detected(local); | |
2725 | ||
2726 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2727 | } | |
2728 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2729 | |
2730 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2731 | { | |
2732 | u32 ret; | |
2733 | int tmp; | |
2734 | ||
2735 | switch (c->width) { | |
2736 | case NL80211_CHAN_WIDTH_20: | |
2737 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2738 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2739 | break; | |
2740 | case NL80211_CHAN_WIDTH_40: | |
2741 | c->width = NL80211_CHAN_WIDTH_20; | |
2742 | c->center_freq1 = c->chan->center_freq; | |
2743 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2744 | IEEE80211_STA_DISABLE_VHT; | |
2745 | break; | |
2746 | case NL80211_CHAN_WIDTH_80: | |
2747 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2748 | /* n_P40 */ | |
2749 | tmp /= 2; | |
2750 | /* freq_P40 */ | |
2751 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2752 | c->width = NL80211_CHAN_WIDTH_40; | |
2753 | ret = IEEE80211_STA_DISABLE_VHT; | |
2754 | break; | |
2755 | case NL80211_CHAN_WIDTH_80P80: | |
2756 | c->center_freq2 = 0; | |
2757 | c->width = NL80211_CHAN_WIDTH_80; | |
2758 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2759 | IEEE80211_STA_DISABLE_160MHZ; | |
2760 | break; | |
2761 | case NL80211_CHAN_WIDTH_160: | |
2762 | /* n_P20 */ | |
2763 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2764 | /* n_P80 */ | |
2765 | tmp /= 4; | |
2766 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2767 | c->width = NL80211_CHAN_WIDTH_80; | |
2768 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2769 | IEEE80211_STA_DISABLE_160MHZ; | |
2770 | break; | |
2771 | default: | |
2772 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2773 | WARN_ON_ONCE(1); | |
2774 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2775 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2776 | break; | |
2777 | case NL80211_CHAN_WIDTH_5: | |
2778 | case NL80211_CHAN_WIDTH_10: | |
2779 | WARN_ON_ONCE(1); | |
2780 | /* keep c->width */ | |
2781 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2782 | break; | |
2783 | } | |
2784 | ||
2785 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2786 | ||
2787 | return ret; | |
2788 | } | |
687da132 EG |
2789 | |
2790 | /* | |
2791 | * Returns true if smps_mode_new is strictly more restrictive than | |
2792 | * smps_mode_old. | |
2793 | */ | |
2794 | bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, | |
2795 | enum ieee80211_smps_mode smps_mode_new) | |
2796 | { | |
2797 | if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || | |
2798 | smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) | |
2799 | return false; | |
2800 | ||
2801 | switch (smps_mode_old) { | |
2802 | case IEEE80211_SMPS_STATIC: | |
2803 | return false; | |
2804 | case IEEE80211_SMPS_DYNAMIC: | |
2805 | return smps_mode_new == IEEE80211_SMPS_STATIC; | |
2806 | case IEEE80211_SMPS_OFF: | |
2807 | return smps_mode_new != IEEE80211_SMPS_OFF; | |
2808 | default: | |
2809 | WARN_ON(1); | |
2810 | } | |
2811 | ||
2812 | return false; | |
2813 | } | |
c6da674a CYY |
2814 | |
2815 | int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, | |
2816 | struct cfg80211_csa_settings *csa_settings) | |
2817 | { | |
2818 | struct sk_buff *skb; | |
2819 | struct ieee80211_mgmt *mgmt; | |
2820 | struct ieee80211_local *local = sdata->local; | |
2821 | int freq; | |
2822 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + | |
2823 | sizeof(mgmt->u.action.u.chan_switch); | |
2824 | u8 *pos; | |
2825 | ||
2826 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
2827 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) | |
2828 | return -EOPNOTSUPP; | |
2829 | ||
2830 | skb = dev_alloc_skb(local->tx_headroom + hdr_len + | |
2831 | 5 + /* channel switch announcement element */ | |
2832 | 3 + /* secondary channel offset element */ | |
2833 | 8); /* mesh channel switch parameters element */ | |
2834 | if (!skb) | |
2835 | return -ENOMEM; | |
2836 | ||
2837 | skb_reserve(skb, local->tx_headroom); | |
2838 | mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); | |
2839 | memset(mgmt, 0, hdr_len); | |
2840 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2841 | IEEE80211_STYPE_ACTION); | |
2842 | ||
2843 | eth_broadcast_addr(mgmt->da); | |
2844 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
2845 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2846 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); | |
2847 | } else { | |
2848 | struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; | |
2849 | memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); | |
2850 | } | |
2851 | mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
2852 | mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; | |
2853 | pos = skb_put(skb, 5); | |
2854 | *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ | |
2855 | *pos++ = 3; /* IE length */ | |
2856 | *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ | |
2857 | freq = csa_settings->chandef.chan->center_freq; | |
2858 | *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ | |
2859 | *pos++ = csa_settings->count; /* count */ | |
2860 | ||
2861 | if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { | |
2862 | enum nl80211_channel_type ch_type; | |
2863 | ||
2864 | skb_put(skb, 3); | |
2865 | *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ | |
2866 | *pos++ = 1; /* IE length */ | |
2867 | ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); | |
2868 | if (ch_type == NL80211_CHAN_HT40PLUS) | |
2869 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2870 | else | |
2871 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2872 | } | |
2873 | ||
2874 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2875 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
c6da674a CYY |
2876 | |
2877 | skb_put(skb, 8); | |
2878 | *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ | |
2879 | *pos++ = 6; /* IE length */ | |
2880 | *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ | |
2881 | *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ | |
2882 | *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; | |
2883 | *pos++ |= csa_settings->block_tx ? | |
2884 | WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; | |
2885 | put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ | |
2886 | pos += 2; | |
ca91dc97 | 2887 | put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
c6da674a | 2888 | pos += 2; |
c6da674a CYY |
2889 | } |
2890 | ||
2891 | ieee80211_tx_skb(sdata, skb); | |
2892 | return 0; | |
2893 | } | |
2475b1cc MS |
2894 | |
2895 | bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) | |
2896 | { | |
2897 | return !(cs == NULL || cs->cipher == 0 || | |
2898 | cs->hdr_len < cs->pn_len + cs->pn_off || | |
2899 | cs->hdr_len <= cs->key_idx_off || | |
2900 | cs->key_idx_shift > 7 || | |
2901 | cs->key_idx_mask == 0); | |
2902 | } | |
2903 | ||
2904 | bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) | |
2905 | { | |
2906 | int i; | |
2907 | ||
2908 | /* Ensure we have enough iftype bitmap space for all iftype values */ | |
2909 | WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); | |
2910 | ||
2911 | for (i = 0; i < n; i++) | |
2912 | if (!ieee80211_cs_valid(&cs[i])) | |
2913 | return false; | |
2914 | ||
2915 | return true; | |
2916 | } | |
2917 | ||
2918 | const struct ieee80211_cipher_scheme * | |
2919 | ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, | |
2920 | enum nl80211_iftype iftype) | |
2921 | { | |
2922 | const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; | |
2923 | int n = local->hw.n_cipher_schemes; | |
2924 | int i; | |
2925 | const struct ieee80211_cipher_scheme *cs = NULL; | |
2926 | ||
2927 | for (i = 0; i < n; i++) { | |
2928 | if (l[i].cipher == cipher) { | |
2929 | cs = &l[i]; | |
2930 | break; | |
2931 | } | |
2932 | } | |
2933 | ||
2934 | if (!cs || !(cs->iftype & BIT(iftype))) | |
2935 | return NULL; | |
2936 | ||
2937 | return cs; | |
2938 | } | |
2939 | ||
2940 | int ieee80211_cs_headroom(struct ieee80211_local *local, | |
2941 | struct cfg80211_crypto_settings *crypto, | |
2942 | enum nl80211_iftype iftype) | |
2943 | { | |
2944 | const struct ieee80211_cipher_scheme *cs; | |
2945 | int headroom = IEEE80211_ENCRYPT_HEADROOM; | |
2946 | int i; | |
2947 | ||
2948 | for (i = 0; i < crypto->n_ciphers_pairwise; i++) { | |
2949 | cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], | |
2950 | iftype); | |
2951 | ||
2952 | if (cs && headroom < cs->hdr_len) | |
2953 | headroom = cs->hdr_len; | |
2954 | } | |
2955 | ||
2956 | cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); | |
2957 | if (cs && headroom < cs->hdr_len) | |
2958 | headroom = cs->hdr_len; | |
2959 | ||
2960 | return headroom; | |
2961 | } | |
a7022e65 FF |
2962 | |
2963 | static bool | |
2964 | ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) | |
2965 | { | |
2966 | s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); | |
2967 | int skip; | |
2968 | ||
2969 | if (end > 0) | |
2970 | return false; | |
2971 | ||
519ee691 JD |
2972 | /* One shot NOA */ |
2973 | if (data->count[i] == 1) | |
2974 | return false; | |
2975 | ||
2976 | if (data->desc[i].interval == 0) | |
2977 | return false; | |
2978 | ||
a7022e65 FF |
2979 | /* End time is in the past, check for repetitions */ |
2980 | skip = DIV_ROUND_UP(-end, data->desc[i].interval); | |
2981 | if (data->count[i] < 255) { | |
2982 | if (data->count[i] <= skip) { | |
2983 | data->count[i] = 0; | |
2984 | return false; | |
2985 | } | |
2986 | ||
2987 | data->count[i] -= skip; | |
2988 | } | |
2989 | ||
2990 | data->desc[i].start += skip * data->desc[i].interval; | |
2991 | ||
2992 | return true; | |
2993 | } | |
2994 | ||
2995 | static bool | |
2996 | ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, | |
2997 | s32 *offset) | |
2998 | { | |
2999 | bool ret = false; | |
3000 | int i; | |
3001 | ||
3002 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3003 | s32 cur; | |
3004 | ||
3005 | if (!data->count[i]) | |
3006 | continue; | |
3007 | ||
3008 | if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) | |
3009 | ret = true; | |
3010 | ||
3011 | cur = data->desc[i].start - tsf; | |
3012 | if (cur > *offset) | |
3013 | continue; | |
3014 | ||
3015 | cur = data->desc[i].start + data->desc[i].duration - tsf; | |
3016 | if (cur > *offset) | |
3017 | *offset = cur; | |
3018 | } | |
3019 | ||
3020 | return ret; | |
3021 | } | |
3022 | ||
3023 | static u32 | |
3024 | ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) | |
3025 | { | |
3026 | s32 offset = 0; | |
3027 | int tries = 0; | |
3028 | /* | |
3029 | * arbitrary limit, used to avoid infinite loops when combined NoA | |
3030 | * descriptors cover the full time period. | |
3031 | */ | |
3032 | int max_tries = 5; | |
3033 | ||
3034 | ieee80211_extend_absent_time(data, tsf, &offset); | |
3035 | do { | |
3036 | if (!ieee80211_extend_absent_time(data, tsf, &offset)) | |
3037 | break; | |
3038 | ||
3039 | tries++; | |
3040 | } while (tries < max_tries); | |
3041 | ||
3042 | return offset; | |
3043 | } | |
3044 | ||
3045 | void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) | |
3046 | { | |
3047 | u32 next_offset = BIT(31) - 1; | |
3048 | int i; | |
3049 | ||
3050 | data->absent = 0; | |
3051 | data->has_next_tsf = false; | |
3052 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3053 | s32 start; | |
3054 | ||
3055 | if (!data->count[i]) | |
3056 | continue; | |
3057 | ||
3058 | ieee80211_extend_noa_desc(data, tsf, i); | |
3059 | start = data->desc[i].start - tsf; | |
3060 | if (start <= 0) | |
3061 | data->absent |= BIT(i); | |
3062 | ||
3063 | if (next_offset > start) | |
3064 | next_offset = start; | |
3065 | ||
3066 | data->has_next_tsf = true; | |
3067 | } | |
3068 | ||
3069 | if (data->absent) | |
3070 | next_offset = ieee80211_get_noa_absent_time(data, tsf); | |
3071 | ||
3072 | data->next_tsf = tsf + next_offset; | |
3073 | } | |
3074 | EXPORT_SYMBOL(ieee80211_update_p2p_noa); | |
3075 | ||
3076 | int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, | |
3077 | struct ieee80211_noa_data *data, u32 tsf) | |
3078 | { | |
3079 | int ret = 0; | |
3080 | int i; | |
3081 | ||
3082 | memset(data, 0, sizeof(*data)); | |
3083 | ||
3084 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3085 | const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; | |
3086 | ||
3087 | if (!desc->count || !desc->duration) | |
3088 | continue; | |
3089 | ||
3090 | data->count[i] = desc->count; | |
3091 | data->desc[i].start = le32_to_cpu(desc->start_time); | |
3092 | data->desc[i].duration = le32_to_cpu(desc->duration); | |
3093 | data->desc[i].interval = le32_to_cpu(desc->interval); | |
3094 | ||
3095 | if (data->count[i] > 1 && | |
3096 | data->desc[i].interval < data->desc[i].duration) | |
3097 | continue; | |
3098 | ||
3099 | ieee80211_extend_noa_desc(data, tsf, i); | |
3100 | ret++; | |
3101 | } | |
3102 | ||
3103 | if (ret) | |
3104 | ieee80211_update_p2p_noa(data, tsf); | |
3105 | ||
3106 | return ret; | |
3107 | } | |
3108 | EXPORT_SYMBOL(ieee80211_parse_p2p_noa); | |
057d5f4b TP |
3109 | |
3110 | void ieee80211_recalc_dtim(struct ieee80211_local *local, | |
3111 | struct ieee80211_sub_if_data *sdata) | |
3112 | { | |
3113 | u64 tsf = drv_get_tsf(local, sdata); | |
3114 | u64 dtim_count = 0; | |
3115 | u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; | |
3116 | u8 dtim_period = sdata->vif.bss_conf.dtim_period; | |
3117 | struct ps_data *ps; | |
3118 | u8 bcns_from_dtim; | |
3119 | ||
3120 | if (tsf == -1ULL || !beacon_int || !dtim_period) | |
3121 | return; | |
3122 | ||
3123 | if (sdata->vif.type == NL80211_IFTYPE_AP || | |
3124 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
3125 | if (!sdata->bss) | |
3126 | return; | |
3127 | ||
3128 | ps = &sdata->bss->ps; | |
3129 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
3130 | ps = &sdata->u.mesh.ps; | |
3131 | } else { | |
3132 | return; | |
3133 | } | |
3134 | ||
3135 | /* | |
3136 | * actually finds last dtim_count, mac80211 will update in | |
3137 | * __beacon_add_tim(). | |
3138 | * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period | |
3139 | */ | |
3140 | do_div(tsf, beacon_int); | |
3141 | bcns_from_dtim = do_div(tsf, dtim_period); | |
3142 | /* just had a DTIM */ | |
3143 | if (!bcns_from_dtim) | |
3144 | dtim_count = 0; | |
3145 | else | |
3146 | dtim_count = dtim_period - bcns_from_dtim; | |
3147 | ||
3148 | ps->dtim_count = dtim_count; | |
3149 | } | |
73de86a3 | 3150 | |
71e6195e MK |
3151 | static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, |
3152 | struct ieee80211_chanctx *ctx) | |
3153 | { | |
3154 | struct ieee80211_sub_if_data *sdata; | |
3155 | u8 radar_detect = 0; | |
3156 | ||
3157 | lockdep_assert_held(&local->chanctx_mtx); | |
3158 | ||
3159 | if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) | |
3160 | return 0; | |
3161 | ||
3162 | list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) | |
3163 | if (sdata->reserved_radar_required) | |
3164 | radar_detect |= BIT(sdata->reserved_chandef.width); | |
3165 | ||
3166 | /* | |
3167 | * An in-place reservation context should not have any assigned vifs | |
3168 | * until it replaces the other context. | |
3169 | */ | |
3170 | WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && | |
3171 | !list_empty(&ctx->assigned_vifs)); | |
3172 | ||
3173 | list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list) | |
3174 | if (sdata->radar_required) | |
3175 | radar_detect |= BIT(sdata->vif.bss_conf.chandef.width); | |
3176 | ||
3177 | return radar_detect; | |
3178 | } | |
3179 | ||
73de86a3 LC |
3180 | int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, |
3181 | const struct cfg80211_chan_def *chandef, | |
3182 | enum ieee80211_chanctx_mode chanmode, | |
3183 | u8 radar_detect) | |
3184 | { | |
3185 | struct ieee80211_local *local = sdata->local; | |
3186 | struct ieee80211_sub_if_data *sdata_iter; | |
3187 | enum nl80211_iftype iftype = sdata->wdev.iftype; | |
3188 | int num[NUM_NL80211_IFTYPES]; | |
3189 | struct ieee80211_chanctx *ctx; | |
b6a55015 | 3190 | int num_different_channels = 0; |
73de86a3 LC |
3191 | int total = 1; |
3192 | ||
3193 | lockdep_assert_held(&local->chanctx_mtx); | |
3194 | ||
3195 | if (WARN_ON(hweight32(radar_detect) > 1)) | |
3196 | return -EINVAL; | |
3197 | ||
b6a55015 LC |
3198 | if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
3199 | !chandef->chan)) | |
73de86a3 LC |
3200 | return -EINVAL; |
3201 | ||
b6a55015 LC |
3202 | if (chandef) |
3203 | num_different_channels = 1; | |
3204 | ||
73de86a3 LC |
3205 | if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) |
3206 | return -EINVAL; | |
3207 | ||
3208 | /* Always allow software iftypes */ | |
3209 | if (local->hw.wiphy->software_iftypes & BIT(iftype)) { | |
3210 | if (radar_detect) | |
3211 | return -EINVAL; | |
3212 | return 0; | |
3213 | } | |
3214 | ||
3215 | memset(num, 0, sizeof(num)); | |
3216 | ||
3217 | if (iftype != NL80211_IFTYPE_UNSPECIFIED) | |
3218 | num[iftype] = 1; | |
3219 | ||
3220 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3221 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3222 | continue; | |
71e6195e | 3223 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
73de86a3 LC |
3224 | if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { |
3225 | num_different_channels++; | |
3226 | continue; | |
3227 | } | |
b6a55015 | 3228 | if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
73de86a3 LC |
3229 | cfg80211_chandef_compatible(chandef, |
3230 | &ctx->conf.def)) | |
3231 | continue; | |
3232 | num_different_channels++; | |
3233 | } | |
3234 | ||
3235 | list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { | |
3236 | struct wireless_dev *wdev_iter; | |
3237 | ||
3238 | wdev_iter = &sdata_iter->wdev; | |
3239 | ||
3240 | if (sdata_iter == sdata || | |
0f611d28 | 3241 | !ieee80211_sdata_running(sdata_iter) || |
73de86a3 LC |
3242 | local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) |
3243 | continue; | |
3244 | ||
3245 | num[wdev_iter->iftype]++; | |
3246 | total++; | |
3247 | } | |
3248 | ||
3249 | if (total == 1 && !radar_detect) | |
3250 | return 0; | |
3251 | ||
3252 | return cfg80211_check_combinations(local->hw.wiphy, | |
3253 | num_different_channels, | |
3254 | radar_detect, num); | |
3255 | } | |
6fa001bc MK |
3256 | |
3257 | static void | |
3258 | ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, | |
3259 | void *data) | |
3260 | { | |
3261 | u32 *max_num_different_channels = data; | |
3262 | ||
3263 | *max_num_different_channels = max(*max_num_different_channels, | |
3264 | c->num_different_channels); | |
3265 | } | |
3266 | ||
3267 | int ieee80211_max_num_channels(struct ieee80211_local *local) | |
3268 | { | |
3269 | struct ieee80211_sub_if_data *sdata; | |
3270 | int num[NUM_NL80211_IFTYPES] = {}; | |
3271 | struct ieee80211_chanctx *ctx; | |
3272 | int num_different_channels = 0; | |
3273 | u8 radar_detect = 0; | |
3274 | u32 max_num_different_channels = 1; | |
3275 | int err; | |
3276 | ||
3277 | lockdep_assert_held(&local->chanctx_mtx); | |
3278 | ||
3279 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3280 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3281 | continue; | |
3282 | ||
6fa001bc MK |
3283 | num_different_channels++; |
3284 | ||
71e6195e | 3285 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
6fa001bc MK |
3286 | } |
3287 | ||
3288 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3289 | num[sdata->wdev.iftype]++; | |
3290 | ||
3291 | err = cfg80211_iter_combinations(local->hw.wiphy, | |
3292 | num_different_channels, radar_detect, | |
3293 | num, ieee80211_iter_max_chans, | |
3294 | &max_num_different_channels); | |
3295 | if (err < 0) | |
3296 | return err; | |
3297 | ||
3298 | return max_num_different_channels; | |
3299 | } | |
40b861a0 AN |
3300 | |
3301 | u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) | |
3302 | { | |
3303 | *buf++ = WLAN_EID_VENDOR_SPECIFIC; | |
3304 | *buf++ = 7; /* len */ | |
3305 | *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
3306 | *buf++ = 0x50; | |
3307 | *buf++ = 0xf2; | |
3308 | *buf++ = 2; /* WME */ | |
3309 | *buf++ = 0; /* WME info */ | |
3310 | *buf++ = 1; /* WME ver */ | |
3311 | *buf++ = qosinfo; /* U-APSD no in use */ | |
3312 | ||
3313 | return buf; | |
3314 | } | |
ba8c3d6f FF |
3315 | |
3316 | void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, | |
3317 | struct sta_info *sta, | |
3318 | struct txq_info *txqi, int tid) | |
3319 | { | |
3320 | skb_queue_head_init(&txqi->queue); | |
3321 | txqi->txq.vif = &sdata->vif; | |
3322 | ||
3323 | if (sta) { | |
3324 | txqi->txq.sta = &sta->sta; | |
3325 | sta->sta.txq[tid] = &txqi->txq; | |
4d57c678 | 3326 | txqi->txq.tid = tid; |
ba8c3d6f FF |
3327 | txqi->txq.ac = ieee802_1d_to_ac[tid & 7]; |
3328 | } else { | |
3329 | sdata->vif.txq = &txqi->txq; | |
4d57c678 | 3330 | txqi->txq.tid = 0; |
ba8c3d6f FF |
3331 | txqi->txq.ac = IEEE80211_AC_BE; |
3332 | } | |
3333 | } |