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 |
f4a0f0c5 | 7 | * Copyright (C) 2015-2016 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 | ||
856142cd | 291 | if (!refcounted) { |
cca07b00 | 292 | local->q_stop_reasons[queue][reason] = 0; |
856142cd | 293 | } else { |
cca07b00 | 294 | local->q_stop_reasons[queue][reason]--; |
856142cd JB |
295 | if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) |
296 | local->q_stop_reasons[queue][reason] = 0; | |
297 | } | |
cca07b00 LC |
298 | |
299 | if (local->q_stop_reasons[queue][reason] == 0) | |
300 | __clear_bit(reason, &local->queue_stop_reasons[queue]); | |
96f5e66e JB |
301 | |
302 | if (local->queue_stop_reasons[queue] != 0) | |
303 | /* someone still has this queue stopped */ | |
304 | return; | |
305 | ||
7236fe29 JB |
306 | if (skb_queue_empty(&local->pending[queue])) { |
307 | rcu_read_lock(); | |
3a25a8c8 | 308 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
309 | rcu_read_unlock(); |
310 | } else | |
3b8d81e0 | 311 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 312 | } |
ce7c9111 | 313 | |
96f5e66e | 314 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
315 | enum queue_stop_reason reason, |
316 | bool refcounted) | |
ce7c9111 KV |
317 | { |
318 | struct ieee80211_local *local = hw_to_local(hw); | |
319 | unsigned long flags; | |
320 | ||
321 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 322 | __ieee80211_wake_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
323 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
324 | } | |
325 | ||
326 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
327 | { | |
328 | ieee80211_wake_queue_by_reason(hw, queue, | |
cca07b00 LC |
329 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
330 | false); | |
ce7c9111 | 331 | } |
c2d1560a JB |
332 | EXPORT_SYMBOL(ieee80211_wake_queue); |
333 | ||
ce7c9111 | 334 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
335 | enum queue_stop_reason reason, |
336 | bool refcounted) | |
c2d1560a JB |
337 | { |
338 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 339 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 340 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 341 | |
b5878a2d JB |
342 | trace_stop_queue(local, queue, reason); |
343 | ||
e4e72fb4 JB |
344 | if (WARN_ON(queue >= hw->queues)) |
345 | return; | |
96f5e66e | 346 | |
cca07b00 LC |
347 | if (!refcounted) |
348 | local->q_stop_reasons[queue][reason] = 1; | |
349 | else | |
350 | local->q_stop_reasons[queue][reason]++; | |
ada15125 | 351 | |
cca07b00 LC |
352 | if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) |
353 | return; | |
cf0277e7 | 354 | |
a6f38ac3 JB |
355 | if (local->hw.queues < IEEE80211_NUM_ACS) |
356 | n_acs = 1; | |
357 | ||
cf0277e7 | 358 | rcu_read_lock(); |
3a25a8c8 JB |
359 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
360 | int ac; | |
361 | ||
f142c6b9 JB |
362 | if (!sdata->dev) |
363 | continue; | |
364 | ||
a6f38ac3 | 365 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
366 | if (sdata->vif.hw_queue[ac] == queue || |
367 | sdata->vif.cab_queue == queue) | |
368 | netif_stop_subqueue(sdata->dev, ac); | |
369 | } | |
370 | } | |
cf0277e7 | 371 | rcu_read_unlock(); |
c2d1560a | 372 | } |
ce7c9111 | 373 | |
96f5e66e | 374 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
375 | enum queue_stop_reason reason, |
376 | bool refcounted) | |
ce7c9111 KV |
377 | { |
378 | struct ieee80211_local *local = hw_to_local(hw); | |
379 | unsigned long flags; | |
380 | ||
381 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 382 | __ieee80211_stop_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
383 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
384 | } | |
385 | ||
386 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
387 | { | |
388 | ieee80211_stop_queue_by_reason(hw, queue, | |
cca07b00 LC |
389 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
390 | false); | |
ce7c9111 | 391 | } |
c2d1560a JB |
392 | EXPORT_SYMBOL(ieee80211_stop_queue); |
393 | ||
8f77f384 JB |
394 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
395 | struct sk_buff *skb) | |
396 | { | |
397 | struct ieee80211_hw *hw = &local->hw; | |
398 | unsigned long flags; | |
a7bc376c | 399 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 400 | int queue = info->hw_queue; |
a7bc376c JB |
401 | |
402 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 403 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
404 | return; |
405 | } | |
8f77f384 JB |
406 | |
407 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 LC |
408 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
409 | false); | |
3b8d81e0 | 410 | __skb_queue_tail(&local->pending[queue], skb); |
cca07b00 LC |
411 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
412 | false); | |
8f77f384 JB |
413 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
414 | } | |
415 | ||
e3685e03 JB |
416 | void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
417 | struct sk_buff_head *skbs) | |
8f77f384 JB |
418 | { |
419 | struct ieee80211_hw *hw = &local->hw; | |
420 | struct sk_buff *skb; | |
421 | unsigned long flags; | |
b0b97a8a | 422 | int queue, i; |
8f77f384 JB |
423 | |
424 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 425 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
426 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
427 | ||
428 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 429 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
430 | continue; |
431 | } | |
432 | ||
3a25a8c8 | 433 | queue = info->hw_queue; |
4644ae89 JB |
434 | |
435 | __ieee80211_stop_queue(hw, queue, | |
cca07b00 LC |
436 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
437 | false); | |
4644ae89 | 438 | |
3b8d81e0 | 439 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
440 | } |
441 | ||
3b8d81e0 | 442 | for (i = 0; i < hw->queues; i++) |
8f77f384 | 443 | __ieee80211_wake_queue(hw, i, |
cca07b00 LC |
444 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
445 | false); | |
8f77f384 | 446 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
447 | } |
448 | ||
ce7c9111 | 449 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 450 | unsigned long queues, |
cca07b00 LC |
451 | enum queue_stop_reason reason, |
452 | bool refcounted) | |
c2d1560a | 453 | { |
ce7c9111 KV |
454 | struct ieee80211_local *local = hw_to_local(hw); |
455 | unsigned long flags; | |
c2d1560a JB |
456 | int i; |
457 | ||
ce7c9111 KV |
458 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
459 | ||
445ea4e8 | 460 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 461 | __ieee80211_stop_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
462 | |
463 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
464 | } | |
465 | ||
466 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
467 | { | |
445ea4e8 | 468 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
469 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
470 | false); | |
c2d1560a JB |
471 | } |
472 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
473 | ||
92ab8535 TW |
474 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
475 | { | |
476 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
477 | unsigned long flags; |
478 | int ret; | |
96f5e66e | 479 | |
e4e72fb4 JB |
480 | if (WARN_ON(queue >= hw->queues)) |
481 | return true; | |
96f5e66e | 482 | |
3b8d81e0 | 483 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
484 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
485 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
486 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
487 | return ret; | |
92ab8535 TW |
488 | } |
489 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
490 | ||
ce7c9111 | 491 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 492 | unsigned long queues, |
cca07b00 LC |
493 | enum queue_stop_reason reason, |
494 | bool refcounted) | |
c2d1560a | 495 | { |
ce7c9111 KV |
496 | struct ieee80211_local *local = hw_to_local(hw); |
497 | unsigned long flags; | |
c2d1560a JB |
498 | int i; |
499 | ||
ce7c9111 KV |
500 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
501 | ||
445ea4e8 | 502 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 503 | __ieee80211_wake_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
504 | |
505 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
506 | } | |
507 | ||
508 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
509 | { | |
445ea4e8 | 510 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
511 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
512 | false); | |
c2d1560a JB |
513 | } |
514 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 515 | |
26da23b6 LC |
516 | static unsigned int |
517 | ieee80211_get_vif_queues(struct ieee80211_local *local, | |
518 | struct ieee80211_sub_if_data *sdata) | |
39ecc01d | 519 | { |
26da23b6 | 520 | unsigned int queues; |
39ecc01d | 521 | |
30686bf7 | 522 | if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { |
39ecc01d JB |
523 | int ac; |
524 | ||
525 | queues = 0; | |
526 | ||
527 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
528 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
529 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
530 | queues |= BIT(sdata->vif.cab_queue); | |
531 | } else { | |
532 | /* all queues */ | |
533 | queues = BIT(local->hw.queues) - 1; | |
534 | } | |
535 | ||
26da23b6 LC |
536 | return queues; |
537 | } | |
538 | ||
4f9610d5 LK |
539 | void __ieee80211_flush_queues(struct ieee80211_local *local, |
540 | struct ieee80211_sub_if_data *sdata, | |
3b24f4c6 | 541 | unsigned int queues, bool drop) |
26da23b6 | 542 | { |
26da23b6 LC |
543 | if (!local->ops->flush) |
544 | return; | |
545 | ||
4f9610d5 LK |
546 | /* |
547 | * If no queue was set, or if the HW doesn't support | |
548 | * IEEE80211_HW_QUEUE_CONTROL - flush all queues | |
549 | */ | |
30686bf7 | 550 | if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) |
4f9610d5 | 551 | queues = ieee80211_get_vif_queues(local, sdata); |
26da23b6 | 552 | |
59f48fe2 | 553 | ieee80211_stop_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
554 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
555 | false); | |
445ea4e8 | 556 | |
3b24f4c6 | 557 | drv_flush(local, sdata, queues, drop); |
445ea4e8 | 558 | |
59f48fe2 | 559 | ieee80211_wake_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
560 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
561 | false); | |
39ecc01d JB |
562 | } |
563 | ||
4f9610d5 | 564 | void ieee80211_flush_queues(struct ieee80211_local *local, |
3b24f4c6 | 565 | struct ieee80211_sub_if_data *sdata, bool drop) |
4f9610d5 | 566 | { |
3b24f4c6 | 567 | __ieee80211_flush_queues(local, sdata, 0, drop); |
4f9610d5 LK |
568 | } |
569 | ||
26da23b6 LC |
570 | void ieee80211_stop_vif_queues(struct ieee80211_local *local, |
571 | struct ieee80211_sub_if_data *sdata, | |
572 | enum queue_stop_reason reason) | |
573 | { | |
574 | ieee80211_stop_queues_by_reason(&local->hw, | |
575 | ieee80211_get_vif_queues(local, sdata), | |
576 | reason, true); | |
577 | } | |
578 | ||
579 | void ieee80211_wake_vif_queues(struct ieee80211_local *local, | |
580 | struct ieee80211_sub_if_data *sdata, | |
581 | enum queue_stop_reason reason) | |
582 | { | |
583 | ieee80211_wake_queues_by_reason(&local->hw, | |
584 | ieee80211_get_vif_queues(local, sdata), | |
585 | reason, true); | |
586 | } | |
587 | ||
3384d757 AN |
588 | static void __iterate_interfaces(struct ieee80211_local *local, |
589 | u32 iter_flags, | |
590 | void (*iterator)(void *data, u8 *mac, | |
591 | struct ieee80211_vif *vif), | |
592 | void *data) | |
dabeb344 | 593 | { |
dabeb344 | 594 | struct ieee80211_sub_if_data *sdata; |
3384d757 | 595 | bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; |
dabeb344 | 596 | |
c7c71066 | 597 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 598 | switch (sdata->vif.type) { |
05c914fe | 599 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
600 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
601 | continue; | |
602 | break; | |
05c914fe | 603 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 604 | continue; |
2ca27bcf | 605 | default: |
2f561feb ID |
606 | break; |
607 | } | |
8b2c9824 | 608 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
3384d757 | 609 | active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
8b2c9824 | 610 | continue; |
3384d757 | 611 | if (ieee80211_sdata_running(sdata) || !active_only) |
47846c9b | 612 | iterator(data, sdata->vif.addr, |
2f561feb ID |
613 | &sdata->vif); |
614 | } | |
615 | ||
c7c71066 JB |
616 | sdata = rcu_dereference_check(local->monitor_sdata, |
617 | lockdep_is_held(&local->iflist_mtx) || | |
618 | lockdep_rtnl_is_held()); | |
8b2c9824 | 619 | if (sdata && |
3384d757 | 620 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || |
8b2c9824 | 621 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
685fb72b | 622 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 623 | } |
685fb72b | 624 | |
3384d757 | 625 | void ieee80211_iterate_interfaces( |
c7c71066 JB |
626 | struct ieee80211_hw *hw, u32 iter_flags, |
627 | void (*iterator)(void *data, u8 *mac, | |
628 | struct ieee80211_vif *vif), | |
629 | void *data) | |
630 | { | |
631 | struct ieee80211_local *local = hw_to_local(hw); | |
632 | ||
633 | mutex_lock(&local->iflist_mtx); | |
3384d757 | 634 | __iterate_interfaces(local, iter_flags, iterator, data); |
c771c9d8 | 635 | mutex_unlock(&local->iflist_mtx); |
2f561feb | 636 | } |
3384d757 | 637 | EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); |
2f561feb ID |
638 | |
639 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 640 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
641 | void (*iterator)(void *data, u8 *mac, |
642 | struct ieee80211_vif *vif), | |
643 | void *data) | |
644 | { | |
645 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 646 | |
e38bad47 | 647 | rcu_read_lock(); |
3384d757 AN |
648 | __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
649 | iterator, data); | |
c7c71066 JB |
650 | rcu_read_unlock(); |
651 | } | |
652 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 653 | |
c7c71066 JB |
654 | void ieee80211_iterate_active_interfaces_rtnl( |
655 | struct ieee80211_hw *hw, u32 iter_flags, | |
656 | void (*iterator)(void *data, u8 *mac, | |
657 | struct ieee80211_vif *vif), | |
658 | void *data) | |
659 | { | |
660 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 661 | |
c7c71066 | 662 | ASSERT_RTNL(); |
685fb72b | 663 | |
3384d757 AN |
664 | __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
665 | iterator, data); | |
dabeb344 | 666 | } |
c7c71066 | 667 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 668 | |
0fc1e049 AN |
669 | static void __iterate_stations(struct ieee80211_local *local, |
670 | void (*iterator)(void *data, | |
671 | struct ieee80211_sta *sta), | |
672 | void *data) | |
673 | { | |
674 | struct sta_info *sta; | |
675 | ||
676 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
677 | if (!sta->uploaded) | |
678 | continue; | |
679 | ||
680 | iterator(data, &sta->sta); | |
681 | } | |
682 | } | |
683 | ||
684 | void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, | |
685 | void (*iterator)(void *data, | |
686 | struct ieee80211_sta *sta), | |
687 | void *data) | |
688 | { | |
689 | struct ieee80211_local *local = hw_to_local(hw); | |
690 | ||
691 | rcu_read_lock(); | |
692 | __iterate_stations(local, iterator, data); | |
693 | rcu_read_unlock(); | |
694 | } | |
695 | EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); | |
696 | ||
ad7e718c JB |
697 | struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) |
698 | { | |
699 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
700 | ||
701 | if (!ieee80211_sdata_running(sdata) || | |
702 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
703 | return NULL; | |
704 | return &sdata->vif; | |
705 | } | |
706 | EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); | |
707 | ||
dc5a1ad7 EG |
708 | struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) |
709 | { | |
6513e98e JB |
710 | struct ieee80211_sub_if_data *sdata; |
711 | ||
712 | if (!vif) | |
713 | return NULL; | |
714 | ||
715 | sdata = vif_to_sdata(vif); | |
dc5a1ad7 EG |
716 | |
717 | if (!ieee80211_sdata_running(sdata) || | |
718 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
719 | return NULL; | |
720 | ||
721 | return &sdata->wdev; | |
722 | } | |
723 | EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); | |
724 | ||
42935eca LR |
725 | /* |
726 | * Nothing should have been stuffed into the workqueue during | |
4afaff17 EG |
727 | * the suspend->resume cycle. Since we can't check each caller |
728 | * of this function if we are already quiescing / suspended, | |
729 | * check here and don't WARN since this can actually happen when | |
730 | * the rx path (for example) is racing against __ieee80211_suspend | |
731 | * and suspending / quiescing was set after the rx path checked | |
732 | * them. | |
42935eca LR |
733 | */ |
734 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
735 | { | |
4afaff17 EG |
736 | if (local->quiescing || (local->suspended && !local->resuming)) { |
737 | pr_warn("queueing ieee80211 work while going to suspend\n"); | |
ceb99fe0 | 738 | return false; |
4afaff17 | 739 | } |
42935eca LR |
740 | |
741 | return true; | |
742 | } | |
743 | ||
744 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
745 | { | |
746 | struct ieee80211_local *local = hw_to_local(hw); | |
747 | ||
748 | if (!ieee80211_can_queue_work(local)) | |
749 | return; | |
750 | ||
751 | queue_work(local->workqueue, work); | |
752 | } | |
753 | EXPORT_SYMBOL(ieee80211_queue_work); | |
754 | ||
755 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
756 | struct delayed_work *dwork, | |
757 | unsigned long delay) | |
758 | { | |
759 | struct ieee80211_local *local = hw_to_local(hw); | |
760 | ||
761 | if (!ieee80211_can_queue_work(local)) | |
762 | return; | |
763 | ||
764 | queue_delayed_work(local->workqueue, dwork, delay); | |
765 | } | |
766 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
767 | ||
35d865af | 768 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
769 | struct ieee802_11_elems *elems, |
770 | u64 filter, u32 crc) | |
771 | { | |
772 | size_t left = len; | |
35d865af | 773 | const u8 *pos = start; |
dd76986b | 774 | bool calc_crc = filter != 0; |
fcff4f10 | 775 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 776 | const u8 *ie; |
dd76986b | 777 | |
fcff4f10 | 778 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
779 | memset(elems, 0, sizeof(*elems)); |
780 | elems->ie_start = start; | |
781 | elems->total_len = len; | |
782 | ||
783 | while (left >= 2) { | |
784 | u8 id, elen; | |
fcff4f10 | 785 | bool elem_parse_failed; |
dd76986b JB |
786 | |
787 | id = *pos++; | |
788 | elen = *pos++; | |
789 | left -= 2; | |
790 | ||
fcff4f10 PS |
791 | if (elen > left) { |
792 | elems->parse_error = true; | |
dd76986b | 793 | break; |
fcff4f10 PS |
794 | } |
795 | ||
9690fb16 JB |
796 | switch (id) { |
797 | case WLAN_EID_SSID: | |
798 | case WLAN_EID_SUPP_RATES: | |
799 | case WLAN_EID_FH_PARAMS: | |
800 | case WLAN_EID_DS_PARAMS: | |
801 | case WLAN_EID_CF_PARAMS: | |
802 | case WLAN_EID_TIM: | |
803 | case WLAN_EID_IBSS_PARAMS: | |
804 | case WLAN_EID_CHALLENGE: | |
805 | case WLAN_EID_RSN: | |
806 | case WLAN_EID_ERP_INFO: | |
807 | case WLAN_EID_EXT_SUPP_RATES: | |
808 | case WLAN_EID_HT_CAPABILITY: | |
809 | case WLAN_EID_HT_OPERATION: | |
810 | case WLAN_EID_VHT_CAPABILITY: | |
811 | case WLAN_EID_VHT_OPERATION: | |
812 | case WLAN_EID_MESH_ID: | |
813 | case WLAN_EID_MESH_CONFIG: | |
814 | case WLAN_EID_PEER_MGMT: | |
815 | case WLAN_EID_PREQ: | |
816 | case WLAN_EID_PREP: | |
817 | case WLAN_EID_PERR: | |
818 | case WLAN_EID_RANN: | |
819 | case WLAN_EID_CHANNEL_SWITCH: | |
820 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
821 | case WLAN_EID_COUNTRY: | |
822 | case WLAN_EID_PWR_CONSTRAINT: | |
823 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 824 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf | 825 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
8f2535b9 | 826 | case WLAN_EID_CHAN_SWITCH_PARAM: |
9041c1fa | 827 | case WLAN_EID_EXT_CAPABILITY: |
53837584 AN |
828 | case WLAN_EID_CHAN_SWITCH_TIMING: |
829 | case WLAN_EID_LINK_ID: | |
b2e506bf JB |
830 | /* |
831 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
832 | * that if the content gets bigger it might be needed more than once | |
833 | */ | |
9690fb16 JB |
834 | if (test_bit(id, seen_elems)) { |
835 | elems->parse_error = true; | |
836 | left -= elen; | |
837 | pos += elen; | |
838 | continue; | |
839 | } | |
840 | break; | |
fcff4f10 | 841 | } |
dd76986b JB |
842 | |
843 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
844 | crc = crc32_be(crc, pos - 2, elen + 2); | |
845 | ||
fcff4f10 PS |
846 | elem_parse_failed = false; |
847 | ||
dd76986b | 848 | switch (id) { |
53837584 AN |
849 | case WLAN_EID_LINK_ID: |
850 | if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) { | |
851 | elem_parse_failed = true; | |
852 | break; | |
853 | } | |
854 | elems->lnk_id = (void *)(pos - 2); | |
855 | break; | |
856 | case WLAN_EID_CHAN_SWITCH_TIMING: | |
857 | if (elen != sizeof(struct ieee80211_ch_switch_timing)) { | |
858 | elem_parse_failed = true; | |
859 | break; | |
860 | } | |
861 | elems->ch_sw_timing = (void *)pos; | |
862 | break; | |
9041c1fa AN |
863 | case WLAN_EID_EXT_CAPABILITY: |
864 | elems->ext_capab = pos; | |
865 | elems->ext_capab_len = elen; | |
866 | break; | |
dd76986b JB |
867 | case WLAN_EID_SSID: |
868 | elems->ssid = pos; | |
869 | elems->ssid_len = elen; | |
870 | break; | |
871 | case WLAN_EID_SUPP_RATES: | |
872 | elems->supp_rates = pos; | |
873 | elems->supp_rates_len = elen; | |
874 | break; | |
dd76986b | 875 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
876 | if (elen >= 1) |
877 | elems->ds_params = pos; | |
878 | else | |
879 | elem_parse_failed = true; | |
dd76986b | 880 | break; |
dd76986b JB |
881 | case WLAN_EID_TIM: |
882 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
883 | elems->tim = (void *)pos; | |
884 | elems->tim_len = elen; | |
fcff4f10 PS |
885 | } else |
886 | elem_parse_failed = true; | |
dd76986b | 887 | break; |
dd76986b JB |
888 | case WLAN_EID_CHALLENGE: |
889 | elems->challenge = pos; | |
890 | elems->challenge_len = elen; | |
891 | break; | |
892 | case WLAN_EID_VENDOR_SPECIFIC: | |
893 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
894 | pos[2] == 0xf2) { | |
895 | /* Microsoft OUI (00:50:F2) */ | |
896 | ||
897 | if (calc_crc) | |
898 | crc = crc32_be(crc, pos - 2, elen + 2); | |
899 | ||
441a33ba | 900 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
901 | /* OUI Type 2 - WMM IE */ |
902 | if (pos[4] == 0) { | |
903 | elems->wmm_info = pos; | |
904 | elems->wmm_info_len = elen; | |
905 | } else if (pos[4] == 1) { | |
906 | elems->wmm_param = pos; | |
907 | elems->wmm_param_len = elen; | |
908 | } | |
909 | } | |
910 | } | |
911 | break; | |
912 | case WLAN_EID_RSN: | |
913 | elems->rsn = pos; | |
914 | elems->rsn_len = elen; | |
915 | break; | |
916 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
917 | if (elen >= 1) |
918 | elems->erp_info = pos; | |
919 | else | |
920 | elem_parse_failed = true; | |
dd76986b JB |
921 | break; |
922 | case WLAN_EID_EXT_SUPP_RATES: | |
923 | elems->ext_supp_rates = pos; | |
924 | elems->ext_supp_rates_len = elen; | |
925 | break; | |
926 | case WLAN_EID_HT_CAPABILITY: | |
927 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
928 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
929 | else |
930 | elem_parse_failed = true; | |
dd76986b | 931 | break; |
074d46d1 JB |
932 | case WLAN_EID_HT_OPERATION: |
933 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
934 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
935 | else |
936 | elem_parse_failed = true; | |
dd76986b | 937 | break; |
818255ea MP |
938 | case WLAN_EID_VHT_CAPABILITY: |
939 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
940 | elems->vht_cap_elem = (void *)pos; | |
941 | else | |
942 | elem_parse_failed = true; | |
943 | break; | |
944 | case WLAN_EID_VHT_OPERATION: | |
945 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
946 | elems->vht_operation = (void *)pos; | |
947 | else | |
948 | elem_parse_failed = true; | |
949 | break; | |
bee7f586 JB |
950 | case WLAN_EID_OPMODE_NOTIF: |
951 | if (elen > 0) | |
952 | elems->opmode_notif = pos; | |
953 | else | |
954 | elem_parse_failed = true; | |
955 | break; | |
dd76986b JB |
956 | case WLAN_EID_MESH_ID: |
957 | elems->mesh_id = pos; | |
958 | elems->mesh_id_len = elen; | |
959 | break; | |
960 | case WLAN_EID_MESH_CONFIG: | |
961 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
962 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
963 | else |
964 | elem_parse_failed = true; | |
dd76986b JB |
965 | break; |
966 | case WLAN_EID_PEER_MGMT: | |
967 | elems->peering = pos; | |
968 | elems->peering_len = elen; | |
969 | break; | |
3f52b7e3 MP |
970 | case WLAN_EID_MESH_AWAKE_WINDOW: |
971 | if (elen >= 2) | |
972 | elems->awake_window = (void *)pos; | |
973 | break; | |
dd76986b JB |
974 | case WLAN_EID_PREQ: |
975 | elems->preq = pos; | |
976 | elems->preq_len = elen; | |
977 | break; | |
978 | case WLAN_EID_PREP: | |
979 | elems->prep = pos; | |
980 | elems->prep_len = elen; | |
981 | break; | |
982 | case WLAN_EID_PERR: | |
983 | elems->perr = pos; | |
984 | elems->perr_len = elen; | |
985 | break; | |
986 | case WLAN_EID_RANN: | |
987 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
988 | elems->rann = (void *)pos; | |
fcff4f10 PS |
989 | else |
990 | elem_parse_failed = true; | |
dd76986b JB |
991 | break; |
992 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
993 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
994 | elem_parse_failed = true; | |
995 | break; | |
996 | } | |
997 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 998 | break; |
b4f286a1 JB |
999 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
1000 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
1001 | elem_parse_failed = true; | |
1002 | break; | |
1003 | } | |
1004 | elems->ext_chansw_ie = (void *)pos; | |
1005 | break; | |
85220d71 JB |
1006 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
1007 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
1008 | elem_parse_failed = true; | |
1009 | break; | |
1010 | } | |
1011 | elems->sec_chan_offs = (void *)pos; | |
1012 | break; | |
8f2535b9 CYY |
1013 | case WLAN_EID_CHAN_SWITCH_PARAM: |
1014 | if (elen != | |
1015 | sizeof(*elems->mesh_chansw_params_ie)) { | |
1016 | elem_parse_failed = true; | |
1017 | break; | |
1018 | } | |
1019 | elems->mesh_chansw_params_ie = (void *)pos; | |
1020 | break; | |
b2e506bf JB |
1021 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
1022 | if (!action || | |
1023 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
1024 | elem_parse_failed = true; | |
1025 | break; | |
1026 | } | |
1027 | elems->wide_bw_chansw_ie = (void *)pos; | |
1028 | break; | |
1029 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
1030 | if (action) { | |
1031 | elem_parse_failed = true; | |
1032 | break; | |
1033 | } | |
1034 | /* | |
1035 | * This is a bit tricky, but as we only care about | |
1036 | * the wide bandwidth channel switch element, so | |
1037 | * just parse it out manually. | |
1038 | */ | |
1039 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
1040 | pos, elen); | |
1041 | if (ie) { | |
1042 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
1043 | elems->wide_bw_chansw_ie = | |
1044 | (void *)(ie + 2); | |
1045 | else | |
1046 | elem_parse_failed = true; | |
1047 | } | |
1048 | break; | |
dd76986b JB |
1049 | case WLAN_EID_COUNTRY: |
1050 | elems->country_elem = pos; | |
1051 | elems->country_elem_len = elen; | |
1052 | break; | |
1053 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
1054 | if (elen != 1) { |
1055 | elem_parse_failed = true; | |
1056 | break; | |
1057 | } | |
dd76986b | 1058 | elems->pwr_constr_elem = pos; |
dd76986b | 1059 | break; |
c8d65917 SG |
1060 | case WLAN_EID_CISCO_VENDOR_SPECIFIC: |
1061 | /* Lots of different options exist, but we only care | |
1062 | * about the Dynamic Transmit Power Control element. | |
1063 | * First check for the Cisco OUI, then for the DTPC | |
1064 | * tag (0x00). | |
1065 | */ | |
1066 | if (elen < 4) { | |
1067 | elem_parse_failed = true; | |
1068 | break; | |
1069 | } | |
1070 | ||
1071 | if (pos[0] != 0x00 || pos[1] != 0x40 || | |
1072 | pos[2] != 0x96 || pos[3] != 0x00) | |
1073 | break; | |
1074 | ||
1075 | if (elen != 6) { | |
1076 | elem_parse_failed = true; | |
1077 | break; | |
1078 | } | |
1079 | ||
1080 | if (calc_crc) | |
1081 | crc = crc32_be(crc, pos - 2, elen + 2); | |
1082 | ||
1083 | elems->cisco_dtpc_elem = pos; | |
1084 | break; | |
dd76986b | 1085 | case WLAN_EID_TIMEOUT_INTERVAL: |
79ba1d89 JB |
1086 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
1087 | elems->timeout_int = (void *)pos; | |
1088 | else | |
1089 | elem_parse_failed = true; | |
dd76986b JB |
1090 | break; |
1091 | default: | |
1092 | break; | |
1093 | } | |
1094 | ||
fcff4f10 PS |
1095 | if (elem_parse_failed) |
1096 | elems->parse_error = true; | |
1097 | else | |
5df45690 | 1098 | __set_bit(id, seen_elems); |
fcff4f10 | 1099 | |
dd76986b JB |
1100 | left -= elen; |
1101 | pos += elen; | |
1102 | } | |
1103 | ||
fcff4f10 PS |
1104 | if (left != 0) |
1105 | elems->parse_error = true; | |
1106 | ||
dd76986b JB |
1107 | return crc; |
1108 | } | |
1109 | ||
3abead59 | 1110 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
cec66283 | 1111 | bool bss_notify, bool enable_qos) |
5825fe10 JB |
1112 | { |
1113 | struct ieee80211_local *local = sdata->local; | |
1114 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 1115 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 1116 | int ac; |
cec66283 | 1117 | bool use_11b; |
239281f8 | 1118 | bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ |
aa837e1d | 1119 | int aCWmin, aCWmax; |
5825fe10 JB |
1120 | |
1121 | if (!local->ops->conf_tx) | |
1122 | return; | |
1123 | ||
54bcbc69 JB |
1124 | if (local->hw.queues < IEEE80211_NUM_ACS) |
1125 | return; | |
1126 | ||
5825fe10 JB |
1127 | memset(&qparam, 0, sizeof(qparam)); |
1128 | ||
55de908a JB |
1129 | rcu_read_lock(); |
1130 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1131 | use_11b = (chanctx_conf && | |
4bf88530 | 1132 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 1133 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 1134 | rcu_read_unlock(); |
5825fe10 | 1135 | |
239281f8 RL |
1136 | is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); |
1137 | ||
1f4ffde8 FZ |
1138 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1139 | aCWmax = 1023; | |
1140 | if (use_11b) | |
1141 | aCWmin = 31; | |
1142 | else | |
1143 | aCWmin = 15; | |
1144 | ||
1145 | /* Confiure old 802.11b/g medium access rules. */ | |
1146 | qparam.cw_max = aCWmax; | |
1147 | qparam.cw_min = aCWmin; | |
1148 | qparam.txop = 0; | |
1149 | qparam.aifs = 2; | |
aa837e1d | 1150 | |
1f4ffde8 FZ |
1151 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1152 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1153 | if (enable_qos) { |
1154 | switch (ac) { | |
1155 | case IEEE80211_AC_BK: | |
1156 | qparam.cw_max = aCWmax; | |
1157 | qparam.cw_min = aCWmin; | |
1158 | qparam.txop = 0; | |
239281f8 RL |
1159 | if (is_ocb) |
1160 | qparam.aifs = 9; | |
1161 | else | |
1162 | qparam.aifs = 7; | |
a8ce8544 SG |
1163 | break; |
1164 | /* never happens but let's not leave undefined */ | |
1165 | default: | |
1166 | case IEEE80211_AC_BE: | |
1167 | qparam.cw_max = aCWmax; | |
1168 | qparam.cw_min = aCWmin; | |
1169 | qparam.txop = 0; | |
239281f8 RL |
1170 | if (is_ocb) |
1171 | qparam.aifs = 6; | |
1172 | else | |
1173 | qparam.aifs = 3; | |
a8ce8544 SG |
1174 | break; |
1175 | case IEEE80211_AC_VI: | |
1176 | qparam.cw_max = aCWmin; | |
1177 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
239281f8 RL |
1178 | if (is_ocb) |
1179 | qparam.txop = 0; | |
1180 | else if (use_11b) | |
a8ce8544 SG |
1181 | qparam.txop = 6016/32; |
1182 | else | |
1183 | qparam.txop = 3008/32; | |
239281f8 RL |
1184 | |
1185 | if (is_ocb) | |
1186 | qparam.aifs = 3; | |
1187 | else | |
1188 | qparam.aifs = 2; | |
a8ce8544 SG |
1189 | break; |
1190 | case IEEE80211_AC_VO: | |
1191 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1192 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
239281f8 RL |
1193 | if (is_ocb) |
1194 | qparam.txop = 0; | |
1195 | else if (use_11b) | |
a8ce8544 SG |
1196 | qparam.txop = 3264/32; |
1197 | else | |
1198 | qparam.txop = 1504/32; | |
1199 | qparam.aifs = 2; | |
1200 | break; | |
1201 | } | |
aa837e1d | 1202 | } |
5825fe10 | 1203 | |
ab13315a KV |
1204 | qparam.uapsd = false; |
1205 | ||
54bcbc69 JB |
1206 | sdata->tx_conf[ac] = qparam; |
1207 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1208 | } |
e1b3ec1a | 1209 | |
f142c6b9 JB |
1210 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1211 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1212 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1213 | if (bss_notify) |
1214 | ieee80211_bss_info_change_notify(sdata, | |
1215 | BSS_CHANGED_QOS); | |
d9734979 | 1216 | } |
5825fe10 | 1217 | } |
e50db65c | 1218 | |
46900298 | 1219 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1220 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1221 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1222 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1223 | u32 tx_flags) | |
46900298 JB |
1224 | { |
1225 | struct ieee80211_local *local = sdata->local; | |
1226 | struct sk_buff *skb; | |
1227 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1228 | int err; |
46900298 | 1229 | |
15e230ab | 1230 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
744462a9 MS |
1231 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + |
1232 | 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN); | |
d15b8459 | 1233 | if (!skb) |
46900298 | 1234 | return; |
d15b8459 | 1235 | |
744462a9 | 1236 | skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); |
46900298 JB |
1237 | |
1238 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1239 | memset(mgmt, 0, 24 + 6); | |
1240 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1241 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1242 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1243 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1244 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1245 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1246 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1247 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1248 | if (extra) |
1249 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1250 | |
fffd0934 JB |
1251 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1252 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1253 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1254 | WARN_ON(err); | |
1255 | } | |
1256 | ||
1672c0e3 JB |
1257 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1258 | tx_flags; | |
62ae67be | 1259 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1260 | } |
1261 | ||
6ae16775 AQ |
1262 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1263 | const u8 *bssid, u16 stype, u16 reason, | |
1264 | bool send_frame, u8 *frame_buf) | |
1265 | { | |
1266 | struct ieee80211_local *local = sdata->local; | |
1267 | struct sk_buff *skb; | |
1268 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1269 | ||
1270 | /* build frame */ | |
1271 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1272 | mgmt->duration = 0; /* initialize only */ | |
1273 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1274 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1275 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1276 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1277 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1278 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1279 | ||
1280 | if (send_frame) { | |
1281 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1282 | IEEE80211_DEAUTH_FRAME_LEN); | |
1283 | if (!skb) | |
1284 | return; | |
1285 | ||
1286 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1287 | ||
1288 | /* copy in frame */ | |
1289 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1290 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1291 | ||
1292 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1293 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1294 | IEEE80211_SKB_CB(skb)->flags |= | |
1295 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1296 | ||
1297 | ieee80211_tx_skb(sdata, skb); | |
1298 | } | |
1299 | } | |
1300 | ||
c56ef672 DS |
1301 | static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, |
1302 | u8 *buffer, size_t buffer_len, | |
1303 | const u8 *ie, size_t ie_len, | |
1304 | enum ieee80211_band band, | |
1305 | u32 rate_mask, | |
1306 | struct cfg80211_chan_def *chandef, | |
1307 | size_t *offset) | |
de95a54b JB |
1308 | { |
1309 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1310 | u8 *pos = buffer, *end = buffer + buffer_len; |
c56ef672 | 1311 | size_t noffset; |
8e664fb3 | 1312 | int supp_rates_len, i; |
8dcb2003 JM |
1313 | u8 rates[32]; |
1314 | int num_rates; | |
1315 | int ext_rates_len; | |
2103dec1 SW |
1316 | int shift; |
1317 | u32 rate_flags; | |
40a11ca8 | 1318 | bool have_80mhz = false; |
de95a54b | 1319 | |
c56ef672 DS |
1320 | *offset = 0; |
1321 | ||
4d36ec58 | 1322 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1323 | if (WARN_ON_ONCE(!sband)) |
1324 | return 0; | |
de95a54b | 1325 | |
2103dec1 SW |
1326 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1327 | shift = ieee80211_chandef_get_shift(chandef); | |
1328 | ||
8dcb2003 JM |
1329 | num_rates = 0; |
1330 | for (i = 0; i < sband->n_bitrates; i++) { | |
1331 | if ((BIT(i) & rate_mask) == 0) | |
1332 | continue; /* skip rate */ | |
2103dec1 SW |
1333 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1334 | continue; | |
1335 | ||
1336 | rates[num_rates++] = | |
1337 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1338 | (1 << shift) * 5); | |
8dcb2003 JM |
1339 | } |
1340 | ||
1341 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1342 | |
c604b9f2 JB |
1343 | if (end - pos < 2 + supp_rates_len) |
1344 | goto out_err; | |
de95a54b | 1345 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1346 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1347 | memcpy(pos, rates, supp_rates_len); |
1348 | pos += supp_rates_len; | |
8e664fb3 JB |
1349 | |
1350 | /* insert "request information" if in custom IEs */ | |
1351 | if (ie && ie_len) { | |
1352 | static const u8 before_extrates[] = { | |
1353 | WLAN_EID_SSID, | |
1354 | WLAN_EID_SUPP_RATES, | |
1355 | WLAN_EID_REQUEST, | |
1356 | }; | |
1357 | noffset = ieee80211_ie_split(ie, ie_len, | |
1358 | before_extrates, | |
1359 | ARRAY_SIZE(before_extrates), | |
c56ef672 DS |
1360 | *offset); |
1361 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1362 | goto out_err; |
c56ef672 DS |
1363 | memcpy(pos, ie + *offset, noffset - *offset); |
1364 | pos += noffset - *offset; | |
1365 | *offset = noffset; | |
8e664fb3 JB |
1366 | } |
1367 | ||
8dcb2003 JM |
1368 | ext_rates_len = num_rates - supp_rates_len; |
1369 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1370 | if (end - pos < 2 + ext_rates_len) |
1371 | goto out_err; | |
8e664fb3 | 1372 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1373 | *pos++ = ext_rates_len; |
1374 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1375 | pos += ext_rates_len; | |
8e664fb3 JB |
1376 | } |
1377 | ||
2103dec1 | 1378 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1379 | if (end - pos < 3) |
1380 | goto out_err; | |
651b5225 JM |
1381 | *pos++ = WLAN_EID_DS_PARAMS; |
1382 | *pos++ = 1; | |
2103dec1 SW |
1383 | *pos++ = ieee80211_frequency_to_channel( |
1384 | chandef->chan->center_freq); | |
651b5225 JM |
1385 | } |
1386 | ||
8e664fb3 JB |
1387 | /* insert custom IEs that go before HT */ |
1388 | if (ie && ie_len) { | |
1389 | static const u8 before_ht[] = { | |
1390 | WLAN_EID_SSID, | |
1391 | WLAN_EID_SUPP_RATES, | |
1392 | WLAN_EID_REQUEST, | |
1393 | WLAN_EID_EXT_SUPP_RATES, | |
1394 | WLAN_EID_DS_PARAMS, | |
1395 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1396 | }; | |
1397 | noffset = ieee80211_ie_split(ie, ie_len, | |
1398 | before_ht, ARRAY_SIZE(before_ht), | |
c56ef672 DS |
1399 | *offset); |
1400 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1401 | goto out_err; |
c56ef672 DS |
1402 | memcpy(pos, ie + *offset, noffset - *offset); |
1403 | pos += noffset - *offset; | |
1404 | *offset = noffset; | |
de95a54b JB |
1405 | } |
1406 | ||
c604b9f2 JB |
1407 | if (sband->ht_cap.ht_supported) { |
1408 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1409 | goto out_err; | |
ef96a842 BG |
1410 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1411 | sband->ht_cap.cap); | |
c604b9f2 | 1412 | } |
5ef2d41a | 1413 | |
de95a54b JB |
1414 | /* |
1415 | * If adding more here, adjust code in main.c | |
1416 | * that calculates local->scan_ies_len. | |
1417 | */ | |
1418 | ||
4d952300 | 1419 | /* insert custom IEs that go before VHT */ |
8e664fb3 | 1420 | if (ie && ie_len) { |
4d952300 JB |
1421 | static const u8 before_vht[] = { |
1422 | WLAN_EID_SSID, | |
1423 | WLAN_EID_SUPP_RATES, | |
1424 | WLAN_EID_REQUEST, | |
1425 | WLAN_EID_EXT_SUPP_RATES, | |
1426 | WLAN_EID_DS_PARAMS, | |
1427 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1428 | WLAN_EID_HT_CAPABILITY, | |
1429 | WLAN_EID_BSS_COEX_2040, | |
1430 | WLAN_EID_EXT_CAPABILITY, | |
1431 | WLAN_EID_SSID_LIST, | |
1432 | WLAN_EID_CHANNEL_USAGE, | |
1433 | WLAN_EID_INTERWORKING, | |
1434 | /* mesh ID can't happen here */ | |
1435 | /* 60 GHz can't happen here right now */ | |
1436 | }; | |
1437 | noffset = ieee80211_ie_split(ie, ie_len, | |
1438 | before_vht, ARRAY_SIZE(before_vht), | |
c56ef672 DS |
1439 | *offset); |
1440 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1441 | goto out_err; |
c56ef672 DS |
1442 | memcpy(pos, ie + *offset, noffset - *offset); |
1443 | pos += noffset - *offset; | |
1444 | *offset = noffset; | |
de95a54b JB |
1445 | } |
1446 | ||
40a11ca8 JB |
1447 | /* Check if any channel in this sband supports at least 80 MHz */ |
1448 | for (i = 0; i < sband->n_channels; i++) { | |
fa44b988 AN |
1449 | if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | |
1450 | IEEE80211_CHAN_NO_80MHZ)) | |
1451 | continue; | |
1452 | ||
1453 | have_80mhz = true; | |
1454 | break; | |
40a11ca8 JB |
1455 | } |
1456 | ||
1457 | if (sband->vht_cap.vht_supported && have_80mhz) { | |
c604b9f2 JB |
1458 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) |
1459 | goto out_err; | |
ba0afa2f MP |
1460 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1461 | sband->vht_cap.cap); | |
c604b9f2 | 1462 | } |
ba0afa2f | 1463 | |
c604b9f2 JB |
1464 | return pos - buffer; |
1465 | out_err: | |
1466 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1467 | return pos - buffer; |
1468 | } | |
1469 | ||
c56ef672 DS |
1470 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
1471 | size_t buffer_len, | |
1472 | struct ieee80211_scan_ies *ie_desc, | |
1473 | const u8 *ie, size_t ie_len, | |
1474 | u8 bands_used, u32 *rate_masks, | |
1475 | struct cfg80211_chan_def *chandef) | |
1476 | { | |
1477 | size_t pos = 0, old_pos = 0, custom_ie_offset = 0; | |
1478 | int i; | |
1479 | ||
1480 | memset(ie_desc, 0, sizeof(*ie_desc)); | |
1481 | ||
1482 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { | |
1483 | if (bands_used & BIT(i)) { | |
1484 | pos += ieee80211_build_preq_ies_band(local, | |
1485 | buffer + pos, | |
1486 | buffer_len - pos, | |
1487 | ie, ie_len, i, | |
1488 | rate_masks[i], | |
1489 | chandef, | |
1490 | &custom_ie_offset); | |
1491 | ie_desc->ies[i] = buffer + old_pos; | |
1492 | ie_desc->len[i] = pos - old_pos; | |
1493 | old_pos = pos; | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | /* add any remaining custom IEs */ | |
1498 | if (ie && ie_len) { | |
1499 | if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, | |
1500 | "not enough space for preq custom IEs\n")) | |
1501 | return pos; | |
1502 | memcpy(buffer + pos, ie + custom_ie_offset, | |
1503 | ie_len - custom_ie_offset); | |
1504 | ie_desc->common_ies = buffer + pos; | |
1505 | ie_desc->common_ie_len = ie_len - custom_ie_offset; | |
1506 | pos += ie_len - custom_ie_offset; | |
1507 | } | |
1508 | ||
1509 | return pos; | |
1510 | }; | |
1511 | ||
a619a4c0 | 1512 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
a344d677 JB |
1513 | const u8 *src, const u8 *dst, |
1514 | u32 ratemask, | |
6b77863b | 1515 | struct ieee80211_channel *chan, |
a619a4c0 | 1516 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1517 | const u8 *ie, size_t ie_len, |
1518 | bool directed) | |
46900298 JB |
1519 | { |
1520 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1521 | struct cfg80211_chan_def chandef; |
46900298 JB |
1522 | struct sk_buff *skb; |
1523 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1524 | int ies_len; |
c56ef672 DS |
1525 | u32 rate_masks[IEEE80211_NUM_BANDS] = {}; |
1526 | struct ieee80211_scan_ies dummy_ie_desc; | |
46900298 | 1527 | |
a806c558 PS |
1528 | /* |
1529 | * Do not send DS Channel parameter for directed probe requests | |
1530 | * in order to maximize the chance that we get a response. Some | |
1531 | * badly-behaved APs don't respond when this parameter is included. | |
1532 | */ | |
2103dec1 | 1533 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1534 | if (directed) |
2103dec1 | 1535 | chandef.chan = NULL; |
a806c558 | 1536 | else |
2103dec1 | 1537 | chandef.chan = chan; |
651b5225 | 1538 | |
a344d677 JB |
1539 | skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, |
1540 | 100 + ie_len); | |
5b2bbf75 | 1541 | if (!skb) |
b9a9ada1 JB |
1542 | return NULL; |
1543 | ||
c56ef672 | 1544 | rate_masks[chan->band] = ratemask; |
b9a9ada1 | 1545 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), |
c56ef672 DS |
1546 | skb_tailroom(skb), &dummy_ie_desc, |
1547 | ie, ie_len, BIT(chan->band), | |
1548 | rate_masks, &chandef); | |
b9a9ada1 | 1549 | skb_put(skb, ies_len); |
7c12ce8b | 1550 | |
46900298 | 1551 | if (dst) { |
7c12ce8b | 1552 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1553 | memcpy(mgmt->da, dst, ETH_ALEN); |
1554 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1555 | } |
46900298 | 1556 | |
62ae67be | 1557 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1558 | |
a619a4c0 JO |
1559 | return skb; |
1560 | } | |
1561 | ||
a344d677 JB |
1562 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, |
1563 | const u8 *src, const u8 *dst, | |
a619a4c0 | 1564 | const u8 *ssid, size_t ssid_len, |
a806c558 | 1565 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1566 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1567 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1568 | { |
1569 | struct sk_buff *skb; | |
1570 | ||
a344d677 | 1571 | skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel, |
6b77863b | 1572 | ssid, ssid_len, |
85a237fe | 1573 | ie, ie_len, directed); |
aad14ceb | 1574 | if (skb) { |
1672c0e3 | 1575 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1576 | if (scan) |
1577 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1578 | else | |
1579 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1580 | } |
46900298 JB |
1581 | } |
1582 | ||
2103dec1 | 1583 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1584 | struct ieee802_11_elems *elems, |
9ebb61a2 | 1585 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1586 | { |
1587 | struct ieee80211_supported_band *sband; | |
46900298 | 1588 | size_t num_rates; |
2103dec1 SW |
1589 | u32 supp_rates, rate_flags; |
1590 | int i, j, shift; | |
1591 | sband = sdata->local->hw.wiphy->bands[band]; | |
1592 | ||
1593 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1594 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1595 | |
4ee73f33 MK |
1596 | if (WARN_ON(!sband)) |
1597 | return 1; | |
46900298 | 1598 | |
46900298 JB |
1599 | num_rates = sband->n_bitrates; |
1600 | supp_rates = 0; | |
1601 | for (i = 0; i < elems->supp_rates_len + | |
1602 | elems->ext_supp_rates_len; i++) { | |
1603 | u8 rate = 0; | |
1604 | int own_rate; | |
9ebb61a2 | 1605 | bool is_basic; |
46900298 JB |
1606 | if (i < elems->supp_rates_len) |
1607 | rate = elems->supp_rates[i]; | |
1608 | else if (elems->ext_supp_rates) | |
1609 | rate = elems->ext_supp_rates | |
1610 | [i - elems->supp_rates_len]; | |
1611 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1612 | is_basic = !!(rate & 0x80); |
1613 | ||
1614 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1615 | continue; | |
1616 | ||
1617 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1618 | int brate; |
1619 | if ((rate_flags & sband->bitrates[j].flags) | |
1620 | != rate_flags) | |
1621 | continue; | |
1622 | ||
1623 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1624 | 1 << shift); | |
1625 | ||
1626 | if (brate == own_rate) { | |
46900298 | 1627 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1628 | if (basic_rates && is_basic) |
1629 | *basic_rates |= BIT(j); | |
1630 | } | |
1631 | } | |
46900298 JB |
1632 | } |
1633 | return supp_rates; | |
1634 | } | |
f2753ddb | 1635 | |
84f6a01c JB |
1636 | void ieee80211_stop_device(struct ieee80211_local *local) |
1637 | { | |
1638 | ieee80211_led_radio(local, false); | |
67408c8c | 1639 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1640 | |
1641 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1642 | |
1643 | flush_workqueue(local->workqueue); | |
678f415f | 1644 | drv_stop(local); |
84f6a01c JB |
1645 | } |
1646 | ||
74430f94 JB |
1647 | static void ieee80211_flush_completed_scan(struct ieee80211_local *local, |
1648 | bool aborted) | |
1649 | { | |
1650 | /* It's possible that we don't handle the scan completion in | |
1651 | * time during suspend, so if it's still marked as completed | |
1652 | * here, queue the work and flush it to clean things up. | |
1653 | * Instead of calling the worker function directly here, we | |
1654 | * really queue it to avoid potential races with other flows | |
1655 | * scheduling the same work. | |
1656 | */ | |
1657 | if (test_bit(SCAN_COMPLETED, &local->scanning)) { | |
1658 | /* If coming from reconfiguration failure, abort the scan so | |
1659 | * we don't attempt to continue a partial HW scan - which is | |
1660 | * possible otherwise if (e.g.) the 2.4 GHz portion was the | |
1661 | * completed scan, and a 5 GHz portion is still pending. | |
1662 | */ | |
1663 | if (aborted) | |
1664 | set_bit(SCAN_ABORTED, &local->scanning); | |
1665 | ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0); | |
1666 | flush_delayed_work(&local->scan_work); | |
1667 | } | |
1668 | } | |
1669 | ||
f6837ba8 JB |
1670 | static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) |
1671 | { | |
1672 | struct ieee80211_sub_if_data *sdata; | |
1673 | struct ieee80211_chanctx *ctx; | |
1674 | ||
1675 | /* | |
1676 | * We get here if during resume the device can't be restarted properly. | |
1677 | * We might also get here if this happens during HW reset, which is a | |
1678 | * slightly different situation and we need to drop all connections in | |
1679 | * the latter case. | |
1680 | * | |
1681 | * Ask cfg80211 to turn off all interfaces, this will result in more | |
1682 | * warnings but at least we'll then get into a clean stopped state. | |
1683 | */ | |
1684 | ||
1685 | local->resuming = false; | |
1686 | local->suspended = false; | |
7584f88f | 1687 | local->in_reconfig = false; |
f6837ba8 | 1688 | |
74430f94 JB |
1689 | ieee80211_flush_completed_scan(local, true); |
1690 | ||
f6837ba8 JB |
1691 | /* scheduled scan clearly can't be running any more, but tell |
1692 | * cfg80211 and clear local state | |
1693 | */ | |
1694 | ieee80211_sched_scan_end(local); | |
1695 | ||
1696 | list_for_each_entry(sdata, &local->interfaces, list) | |
1697 | sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; | |
1698 | ||
1699 | /* Mark channel contexts as not being in the driver any more to avoid | |
1700 | * removing them from the driver during the shutdown process... | |
1701 | */ | |
1702 | mutex_lock(&local->chanctx_mtx); | |
1703 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1704 | ctx->driver_present = false; | |
1705 | mutex_unlock(&local->chanctx_mtx); | |
1706 | ||
1707 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); | |
1708 | } | |
1709 | ||
153a5fc4 SG |
1710 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1711 | struct ieee80211_sub_if_data *sdata) | |
1712 | { | |
1713 | struct ieee80211_chanctx_conf *conf; | |
1714 | struct ieee80211_chanctx *ctx; | |
1715 | ||
1716 | if (!local->use_chanctx) | |
1717 | return; | |
1718 | ||
1719 | mutex_lock(&local->chanctx_mtx); | |
1720 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1721 | lockdep_is_held(&local->chanctx_mtx)); | |
1722 | if (conf) { | |
1723 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1724 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1725 | } | |
1726 | mutex_unlock(&local->chanctx_mtx); | |
1727 | } | |
1728 | ||
1ea2c864 JB |
1729 | static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) |
1730 | { | |
1731 | struct ieee80211_local *local = sdata->local; | |
1732 | struct sta_info *sta; | |
1733 | ||
1734 | /* add STAs back */ | |
1735 | mutex_lock(&local->sta_mtx); | |
1736 | list_for_each_entry(sta, &local->sta_list, list) { | |
1737 | enum ieee80211_sta_state state; | |
1738 | ||
1739 | if (!sta->uploaded || sta->sdata != sdata) | |
1740 | continue; | |
1741 | ||
1742 | for (state = IEEE80211_STA_NOTEXIST; | |
1743 | state < sta->sta_state; state++) | |
1744 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1745 | state + 1)); | |
1746 | } | |
1747 | mutex_unlock(&local->sta_mtx); | |
1748 | } | |
1749 | ||
f2753ddb JB |
1750 | int ieee80211_reconfig(struct ieee80211_local *local) |
1751 | { | |
1752 | struct ieee80211_hw *hw = &local->hw; | |
1753 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1754 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1755 | struct sta_info *sta; |
2683d65b | 1756 | int res, i; |
d888130a | 1757 | bool reconfig_due_to_wowlan = false; |
d43c6b6e | 1758 | struct ieee80211_sub_if_data *sched_scan_sdata; |
6ea0a69c | 1759 | struct cfg80211_sched_scan_request *sched_scan_req; |
d43c6b6e | 1760 | bool sched_scan_stopped = false; |
b0485e9f | 1761 | bool suspended = local->suspended; |
d888130a | 1762 | |
0f8b8245 EP |
1763 | /* nothing to do if HW shouldn't run */ |
1764 | if (!local->open_count) | |
1765 | goto wake_up; | |
1766 | ||
8f21b0ad | 1767 | #ifdef CONFIG_PM |
b0485e9f | 1768 | if (suspended) |
ceb99fe0 | 1769 | local->resuming = true; |
f2753ddb | 1770 | |
eecc4800 | 1771 | if (local->wowlan) { |
b0485e9f EP |
1772 | /* |
1773 | * In the wowlan case, both mac80211 and the device | |
1774 | * are functional when the resume op is called, so | |
1775 | * clear local->suspended so the device could operate | |
1776 | * normally (e.g. pass rx frames). | |
1777 | */ | |
1778 | local->suspended = false; | |
eecc4800 | 1779 | res = drv_resume(local); |
27b3eb9c | 1780 | local->wowlan = false; |
eecc4800 JB |
1781 | if (res < 0) { |
1782 | local->resuming = false; | |
1783 | return res; | |
1784 | } | |
1785 | if (res == 0) | |
1786 | goto wake_up; | |
1787 | WARN_ON(res > 1); | |
1788 | /* | |
1789 | * res is 1, which means the driver requested | |
1790 | * to go through a regular reset on wakeup. | |
b0485e9f | 1791 | * restore local->suspended in this case. |
eecc4800 | 1792 | */ |
d888130a | 1793 | reconfig_due_to_wowlan = true; |
b0485e9f | 1794 | local->suspended = true; |
eecc4800 JB |
1795 | } |
1796 | #endif | |
f2753ddb | 1797 | |
43d6df00 EP |
1798 | /* |
1799 | * In case of hw_restart during suspend (without wowlan), | |
1800 | * cancel restart work, as we are reconfiguring the device | |
1801 | * anyway. | |
1802 | * Note that restart_work is scheduled on a frozen workqueue, | |
1803 | * so we can't deadlock in this case. | |
1804 | */ | |
1805 | if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) | |
1806 | cancel_work_sync(&local->restart_work); | |
1807 | ||
968a76ce EP |
1808 | local->started = false; |
1809 | ||
94f9b97b JB |
1810 | /* |
1811 | * Upon resume hardware can sometimes be goofy due to | |
1812 | * various platform / driver / bus issues, so restarting | |
1813 | * the device may at times not work immediately. Propagate | |
1814 | * the error. | |
1815 | */ | |
1816 | res = drv_start(local); | |
1817 | if (res) { | |
b0485e9f | 1818 | if (suspended) |
f6837ba8 JB |
1819 | WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); |
1820 | else | |
1821 | WARN(1, "Hardware became unavailable during restart.\n"); | |
1822 | ieee80211_handle_reconfig_failure(local); | |
94f9b97b | 1823 | return res; |
f2753ddb JB |
1824 | } |
1825 | ||
7f281975 YAP |
1826 | /* setup fragmentation threshold */ |
1827 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1828 | ||
1829 | /* setup RTS threshold */ | |
1830 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1831 | ||
1832 | /* reset coverage class */ | |
1833 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1834 | ||
94f9b97b JB |
1835 | ieee80211_led_radio(local, true); |
1836 | ieee80211_mod_tpt_led_trig(local, | |
1837 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1838 | ||
f2753ddb | 1839 | /* add interfaces */ |
4b6f1dd6 JB |
1840 | sdata = rtnl_dereference(local->monitor_sdata); |
1841 | if (sdata) { | |
3c3e21e7 JB |
1842 | /* in HW restart it exists already */ |
1843 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1844 | res = drv_add_interface(local, sdata); |
1845 | if (WARN_ON(res)) { | |
0c2bef46 | 1846 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
4b6f1dd6 JB |
1847 | synchronize_net(); |
1848 | kfree(sdata); | |
1849 | } | |
1850 | } | |
1851 | ||
f2753ddb JB |
1852 | list_for_each_entry(sdata, &local->interfaces, list) { |
1853 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1854 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
c8fff3dc | 1855 | ieee80211_sdata_running(sdata)) { |
7b7eab6f | 1856 | res = drv_add_interface(local, sdata); |
c8fff3dc LC |
1857 | if (WARN_ON(res)) |
1858 | break; | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | /* If adding any of the interfaces failed above, roll back and | |
1863 | * report failure. | |
1864 | */ | |
1865 | if (res) { | |
1866 | list_for_each_entry_continue_reverse(sdata, &local->interfaces, | |
1867 | list) | |
1868 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1869 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1870 | ieee80211_sdata_running(sdata)) | |
1871 | drv_remove_interface(local, sdata); | |
1872 | ieee80211_handle_reconfig_failure(local); | |
1873 | return res; | |
f2753ddb JB |
1874 | } |
1875 | ||
55de908a | 1876 | /* add channel contexts */ |
f0dea9c7 AS |
1877 | if (local->use_chanctx) { |
1878 | mutex_lock(&local->chanctx_mtx); | |
1879 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
5bcae31d MK |
1880 | if (ctx->replace_state != |
1881 | IEEE80211_CHANCTX_REPLACES_OTHER) | |
1882 | WARN_ON(drv_add_chanctx(local, ctx)); | |
f0dea9c7 | 1883 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1884 | |
7df180f7 ZG |
1885 | sdata = rtnl_dereference(local->monitor_sdata); |
1886 | if (sdata && ieee80211_sdata_running(sdata)) | |
1887 | ieee80211_assign_chanctx(local, sdata); | |
1888 | } | |
fe5f2559 | 1889 | |
f2753ddb JB |
1890 | /* reconfigure hardware */ |
1891 | ieee80211_hw_config(local, ~0); | |
1892 | ||
f2753ddb | 1893 | ieee80211_configure_filter(local); |
f2753ddb JB |
1894 | |
1895 | /* Finally also reconfigure all the BSS information */ | |
1896 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1897 | u32 changed; |
1898 | ||
9607e6b6 | 1899 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1900 | continue; |
ac8dd506 | 1901 | |
1ea2c864 JB |
1902 | ieee80211_assign_chanctx(local, sdata); |
1903 | ||
1904 | switch (sdata->vif.type) { | |
1905 | case NL80211_IFTYPE_AP_VLAN: | |
1906 | case NL80211_IFTYPE_MONITOR: | |
1907 | break; | |
1908 | default: | |
1909 | ieee80211_reconfig_stations(sdata); | |
1910 | /* fall through */ | |
1911 | case NL80211_IFTYPE_AP: /* AP stations are handled later */ | |
1912 | for (i = 0; i < IEEE80211_NUM_ACS; i++) | |
1913 | drv_conf_tx(local, sdata, i, | |
1914 | &sdata->tx_conf[i]); | |
1915 | break; | |
1916 | } | |
1917 | ||
ac8dd506 JB |
1918 | /* common change flags for all interface types */ |
1919 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1920 | BSS_CHANGED_ERP_PREAMBLE | | |
1921 | BSS_CHANGED_ERP_SLOT | | |
1922 | BSS_CHANGED_HT | | |
1923 | BSS_CHANGED_BASIC_RATES | | |
1924 | BSS_CHANGED_BEACON_INT | | |
1925 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1926 | BSS_CHANGED_CQM | |
55de47f6 | 1927 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1928 | BSS_CHANGED_IDLE | |
1929 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1930 | |
b5a33d52 | 1931 | if (sdata->vif.mu_mimo_owner) |
23a1f8d4 SS |
1932 | changed |= BSS_CHANGED_MU_GROUPS; |
1933 | ||
f2753ddb JB |
1934 | switch (sdata->vif.type) { |
1935 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1936 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1937 | BSS_CHANGED_ARP_FILTER | |
1938 | BSS_CHANGED_PS; | |
c65dd147 | 1939 | |
989c6505 AB |
1940 | /* Re-send beacon info report to the driver */ |
1941 | if (sdata->u.mgd.have_beacon) | |
1942 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1943 | |
8d61ffa5 | 1944 | sdata_lock(sdata); |
ac8dd506 | 1945 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1946 | sdata_unlock(sdata); |
ac8dd506 | 1947 | break; |
6e0bd6c3 | 1948 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1949 | changed |= BSS_CHANGED_OCB; |
1950 | ieee80211_bss_info_change_notify(sdata, changed); | |
6e0bd6c3 | 1951 | break; |
f2753ddb | 1952 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1953 | changed |= BSS_CHANGED_IBSS; |
1954 | /* fall through */ | |
f2753ddb | 1955 | case NL80211_IFTYPE_AP: |
339afbf4 | 1956 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1957 | |
1041638f | 1958 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1959 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1960 | ||
1041638f JB |
1961 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1962 | drv_start_ap(local, sdata); | |
1963 | } | |
1964 | ||
7827493b | 1965 | /* fall through */ |
f2753ddb | 1966 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1967 | if (sdata->vif.bss_conf.enable_beacon) { |
1968 | changed |= BSS_CHANGED_BEACON | | |
1969 | BSS_CHANGED_BEACON_ENABLED; | |
1970 | ieee80211_bss_info_change_notify(sdata, changed); | |
1971 | } | |
f2753ddb JB |
1972 | break; |
1973 | case NL80211_IFTYPE_WDS: | |
f2753ddb JB |
1974 | case NL80211_IFTYPE_AP_VLAN: |
1975 | case NL80211_IFTYPE_MONITOR: | |
98104fde | 1976 | case NL80211_IFTYPE_P2P_DEVICE: |
b205786e | 1977 | /* nothing to do */ |
f142c6b9 | 1978 | break; |
f2753ddb | 1979 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1980 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1981 | case NL80211_IFTYPE_P2P_CLIENT: |
1982 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1983 | WARN_ON(1); |
1984 | break; | |
1985 | } | |
1986 | } | |
1987 | ||
4a733ef1 | 1988 | ieee80211_recalc_ps(local); |
8e1b23b9 | 1989 | |
6e1b1b24 EP |
1990 | /* |
1991 | * The sta might be in psm against the ap (e.g. because | |
1992 | * this was the state before a hw restart), so we | |
1993 | * explicitly send a null packet in order to make sure | |
1994 | * it'll sync against the ap (and get out of psm). | |
1995 | */ | |
1996 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1997 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1998 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1999 | continue; | |
20f544ee JB |
2000 | if (!sdata->u.mgd.associated) |
2001 | continue; | |
6e1b1b24 | 2002 | |
076cdcb1 | 2003 | ieee80211_send_nullfunc(local, sdata, false); |
6e1b1b24 EP |
2004 | } |
2005 | } | |
2006 | ||
2e8d397e AN |
2007 | /* APs are now beaconing, add back stations */ |
2008 | mutex_lock(&local->sta_mtx); | |
2009 | list_for_each_entry(sta, &local->sta_list, list) { | |
2010 | enum ieee80211_sta_state state; | |
2011 | ||
2012 | if (!sta->uploaded) | |
2013 | continue; | |
2014 | ||
2015 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
2016 | continue; | |
2017 | ||
2018 | for (state = IEEE80211_STA_NOTEXIST; | |
2019 | state < sta->sta_state; state++) | |
2020 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
2021 | state + 1)); | |
2022 | } | |
2023 | mutex_unlock(&local->sta_mtx); | |
2024 | ||
7b21aea0 | 2025 | /* add back keys */ |
f9dca80b MK |
2026 | list_for_each_entry(sdata, &local->interfaces, list) |
2027 | ieee80211_reset_crypto_tx_tailroom(sdata); | |
2028 | ||
7b21aea0 ES |
2029 | list_for_each_entry(sdata, &local->interfaces, list) |
2030 | if (ieee80211_sdata_running(sdata)) | |
2031 | ieee80211_enable_keys(sdata); | |
2032 | ||
0d440ea2 EP |
2033 | /* Reconfigure sched scan if it was interrupted by FW restart */ |
2034 | mutex_lock(&local->mtx); | |
2035 | sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, | |
2036 | lockdep_is_held(&local->mtx)); | |
2037 | sched_scan_req = rcu_dereference_protected(local->sched_scan_req, | |
2038 | lockdep_is_held(&local->mtx)); | |
2039 | if (sched_scan_sdata && sched_scan_req) | |
2040 | /* | |
2041 | * Sched scan stopped, but we don't want to report it. Instead, | |
2042 | * we're trying to reschedule. However, if more than one scan | |
2043 | * plan was set, we cannot reschedule since we don't know which | |
2044 | * scan plan was currently running (and some scan plans may have | |
2045 | * already finished). | |
2046 | */ | |
2047 | if (sched_scan_req->n_scan_plans > 1 || | |
2048 | __ieee80211_request_sched_scan_start(sched_scan_sdata, | |
b9f628fc EP |
2049 | sched_scan_req)) { |
2050 | RCU_INIT_POINTER(local->sched_scan_sdata, NULL); | |
2051 | RCU_INIT_POINTER(local->sched_scan_req, NULL); | |
0d440ea2 | 2052 | sched_scan_stopped = true; |
b9f628fc | 2053 | } |
0d440ea2 EP |
2054 | mutex_unlock(&local->mtx); |
2055 | ||
2056 | if (sched_scan_stopped) | |
2057 | cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); | |
2058 | ||
c6209488 | 2059 | wake_up: |
470f4d61 EP |
2060 | if (local->in_reconfig) { |
2061 | local->in_reconfig = false; | |
2062 | barrier(); | |
2063 | ||
2064 | /* Restart deferred ROCs */ | |
2065 | mutex_lock(&local->mtx); | |
2066 | ieee80211_start_next_roc(local); | |
2067 | mutex_unlock(&local->mtx); | |
2068 | } | |
04800ada | 2069 | |
3c3e21e7 JB |
2070 | if (local->monitors == local->open_count && local->monitors > 0) |
2071 | ieee80211_add_virtual_monitor(local); | |
2072 | ||
2a419056 JB |
2073 | /* |
2074 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
2075 | * sessions can be established after a resume. | |
2076 | * | |
2077 | * Also tear down aggregation sessions since reconfiguring | |
2078 | * them in a hardware restart scenario is not easily done | |
2079 | * right now, and the hardware will have lost information | |
2080 | * about the sessions, but we and the AP still think they | |
2081 | * are active. This is really a workaround though. | |
2082 | */ | |
30686bf7 | 2083 | if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { |
2a419056 JB |
2084 | mutex_lock(&local->sta_mtx); |
2085 | ||
2086 | list_for_each_entry(sta, &local->sta_list, list) { | |
27392719 EP |
2087 | if (!local->resuming) |
2088 | ieee80211_sta_tear_down_BA_sessions( | |
2089 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 2090 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 2091 | } |
2a419056 JB |
2092 | |
2093 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 2094 | } |
74e2bd1f | 2095 | |
445ea4e8 | 2096 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
2097 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
2098 | false); | |
f2753ddb | 2099 | |
5bb644a0 JB |
2100 | /* |
2101 | * If this is for hw restart things are still running. | |
2102 | * We may want to change that later, however. | |
2103 | */ | |
b0485e9f | 2104 | if (local->open_count && (!suspended || reconfig_due_to_wowlan)) |
cf2c92d8 | 2105 | drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); |
8f21b0ad | 2106 | |
b0485e9f | 2107 | if (!suspended) |
5bb644a0 JB |
2108 | return 0; |
2109 | ||
2110 | #ifdef CONFIG_PM | |
ceb99fe0 | 2111 | /* first set suspended false, then resuming */ |
5bb644a0 | 2112 | local->suspended = false; |
ceb99fe0 JB |
2113 | mb(); |
2114 | local->resuming = false; | |
5bb644a0 | 2115 | |
74430f94 | 2116 | ieee80211_flush_completed_scan(local, false); |
9120d94e | 2117 | |
0f8b8245 | 2118 | if (local->open_count && !reconfig_due_to_wowlan) |
cf2c92d8 EP |
2119 | drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); |
2120 | ||
b8360ab8 JB |
2121 | list_for_each_entry(sdata, &local->interfaces, list) { |
2122 | if (!ieee80211_sdata_running(sdata)) | |
2123 | continue; | |
2124 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2125 | ieee80211_sta_restart(sdata); | |
2126 | } | |
2127 | ||
26d59535 | 2128 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
2129 | #else |
2130 | WARN_ON(1); | |
2131 | #endif | |
d43c6b6e | 2132 | |
f2753ddb JB |
2133 | return 0; |
2134 | } | |
42935eca | 2135 | |
95acac61 JB |
2136 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
2137 | { | |
2138 | struct ieee80211_sub_if_data *sdata; | |
2139 | struct ieee80211_local *local; | |
2140 | struct ieee80211_key *key; | |
2141 | ||
2142 | if (WARN_ON(!vif)) | |
2143 | return; | |
2144 | ||
2145 | sdata = vif_to_sdata(vif); | |
2146 | local = sdata->local; | |
2147 | ||
2148 | if (WARN_ON(!local->resuming)) | |
2149 | return; | |
2150 | ||
2151 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
2152 | return; | |
2153 | ||
2154 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
2155 | ||
2156 | mutex_lock(&local->key_mtx); | |
2157 | list_for_each_entry(key, &sdata->key_list, list) | |
2158 | key->flags |= KEY_FLAG_TAINTED; | |
2159 | mutex_unlock(&local->key_mtx); | |
2160 | } | |
2161 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
2162 | ||
04ecd257 | 2163 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 2164 | { |
04ecd257 JB |
2165 | struct ieee80211_local *local = sdata->local; |
2166 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2167 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 2168 | |
04ecd257 | 2169 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 2170 | |
04ecd257 JB |
2171 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
2172 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 2173 | |
c189a685 AO |
2174 | /* |
2175 | * This function can be called from a work, thus it may be possible | |
2176 | * that the chanctx_conf is removed (due to a disconnection, for | |
2177 | * example). | |
2178 | * So nothing should be done in such case. | |
2179 | */ | |
2180 | if (!chanctx_conf) | |
5d8e4237 | 2181 | goto unlock; |
0f78231b | 2182 | |
04ecd257 JB |
2183 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
2184 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 2185 | unlock: |
04ecd257 | 2186 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 2187 | } |
8e664fb3 | 2188 | |
21f659bf EP |
2189 | void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) |
2190 | { | |
2191 | struct ieee80211_local *local = sdata->local; | |
2192 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2193 | struct ieee80211_chanctx *chanctx; | |
2194 | ||
2195 | mutex_lock(&local->chanctx_mtx); | |
2196 | ||
2197 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
2198 | lockdep_is_held(&local->chanctx_mtx)); | |
2199 | ||
2200 | if (WARN_ON_ONCE(!chanctx_conf)) | |
2201 | goto unlock; | |
2202 | ||
2203 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); | |
2204 | ieee80211_recalc_chanctx_min_def(local, chanctx); | |
2205 | unlock: | |
2206 | mutex_unlock(&local->chanctx_mtx); | |
2207 | } | |
2208 | ||
8e664fb3 JB |
2209 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) |
2210 | { | |
2211 | size_t pos = offset; | |
2212 | ||
2213 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
2214 | pos += 2 + ies[pos + 1]; | |
2215 | ||
2216 | return pos; | |
2217 | } | |
615f7b9b MV |
2218 | |
2219 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
2220 | int rssi_min_thold, | |
2221 | int rssi_max_thold) | |
2222 | { | |
2223 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
2224 | ||
2225 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2226 | return; | |
2227 | ||
2228 | /* | |
2229 | * Scale up threshold values before storing it, as the RSSI averaging | |
2230 | * algorithm uses a scaled up value as well. Change this scaling | |
2231 | * factor if the RSSI averaging algorithm changes. | |
2232 | */ | |
2233 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
2234 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
2235 | } | |
2236 | ||
2237 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
2238 | int rssi_min_thold, | |
2239 | int rssi_max_thold) | |
2240 | { | |
2241 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2242 | ||
2243 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
2244 | rssi_min_thold > rssi_max_thold); | |
2245 | ||
2246 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
2247 | rssi_max_thold); | |
2248 | } | |
2249 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
2250 | ||
2251 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
2252 | { | |
2253 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2254 | ||
2255 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
2256 | } | |
2257 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 2258 | |
ef96a842 | 2259 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
2260 | u16 cap) |
2261 | { | |
2262 | __le16 tmp; | |
2263 | ||
2264 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
2265 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
2266 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
2267 | ||
2268 | /* capability flags */ | |
2269 | tmp = cpu_to_le16(cap); | |
2270 | memcpy(pos, &tmp, sizeof(u16)); | |
2271 | pos += sizeof(u16); | |
2272 | ||
2273 | /* AMPDU parameters */ | |
ef96a842 BG |
2274 | *pos++ = ht_cap->ampdu_factor | |
2275 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
2276 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
2277 | ||
2278 | /* MCS set */ | |
ef96a842 BG |
2279 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
2280 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
2281 | |
2282 | /* extended capabilities */ | |
2283 | pos += sizeof(__le16); | |
2284 | ||
2285 | /* BF capabilities */ | |
2286 | pos += sizeof(__le32); | |
2287 | ||
2288 | /* antenna selection */ | |
2289 | pos += sizeof(u8); | |
2290 | ||
2291 | return pos; | |
2292 | } | |
2293 | ||
ba0afa2f | 2294 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 2295 | u32 cap) |
ba0afa2f MP |
2296 | { |
2297 | __le32 tmp; | |
2298 | ||
2299 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
2300 | *pos++ = sizeof(struct ieee80211_vht_cap); |
2301 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
2302 | |
2303 | /* capability flags */ | |
2304 | tmp = cpu_to_le32(cap); | |
2305 | memcpy(pos, &tmp, sizeof(u32)); | |
2306 | pos += sizeof(u32); | |
2307 | ||
2308 | /* VHT MCS set */ | |
2309 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
2310 | pos += sizeof(vht_cap->vht_mcs); | |
2311 | ||
2312 | return pos; | |
2313 | } | |
2314 | ||
074d46d1 | 2315 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 2316 | const struct cfg80211_chan_def *chandef, |
57f255f5 | 2317 | u16 prot_mode, bool rifs_mode) |
42e7aa77 | 2318 | { |
074d46d1 | 2319 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 2320 | /* Build HT Information */ |
074d46d1 JB |
2321 | *pos++ = WLAN_EID_HT_OPERATION; |
2322 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
2323 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
2324 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
2325 | chandef->chan->center_freq); | |
2326 | switch (chandef->width) { | |
2327 | case NL80211_CHAN_WIDTH_160: | |
2328 | case NL80211_CHAN_WIDTH_80P80: | |
2329 | case NL80211_CHAN_WIDTH_80: | |
2330 | case NL80211_CHAN_WIDTH_40: | |
2331 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
2332 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2333 | else | |
2334 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 2335 | break; |
42e7aa77 | 2336 | default: |
074d46d1 | 2337 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
2338 | break; |
2339 | } | |
aee286c2 | 2340 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
2341 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
2342 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 2343 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 2344 | |
57f255f5 AN |
2345 | if (rifs_mode) |
2346 | ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; | |
2347 | ||
431e3154 | 2348 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 2349 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
2350 | |
2351 | /* It seems that Basic MCS set and Supported MCS set | |
2352 | are identical for the first 10 bytes */ | |
074d46d1 JB |
2353 | memset(&ht_oper->basic_set, 0, 16); |
2354 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 2355 | |
074d46d1 | 2356 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
2357 | } |
2358 | ||
fb28ec0c AN |
2359 | u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
2360 | const struct cfg80211_chan_def *chandef) | |
2361 | { | |
2362 | struct ieee80211_vht_operation *vht_oper; | |
2363 | ||
2364 | *pos++ = WLAN_EID_VHT_OPERATION; | |
2365 | *pos++ = sizeof(struct ieee80211_vht_operation); | |
2366 | vht_oper = (struct ieee80211_vht_operation *)pos; | |
2367 | vht_oper->center_freq_seg1_idx = ieee80211_frequency_to_channel( | |
2368 | chandef->center_freq1); | |
2369 | if (chandef->center_freq2) | |
2370 | vht_oper->center_freq_seg2_idx = | |
2371 | ieee80211_frequency_to_channel(chandef->center_freq2); | |
f020ae40 CYY |
2372 | else |
2373 | vht_oper->center_freq_seg2_idx = 0x00; | |
fb28ec0c AN |
2374 | |
2375 | switch (chandef->width) { | |
2376 | case NL80211_CHAN_WIDTH_160: | |
23665aaf JM |
2377 | /* |
2378 | * Convert 160 MHz channel width to new style as interop | |
2379 | * workaround. | |
2380 | */ | |
2381 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; | |
2382 | vht_oper->center_freq_seg2_idx = vht_oper->center_freq_seg1_idx; | |
2383 | if (chandef->chan->center_freq < chandef->center_freq1) | |
2384 | vht_oper->center_freq_seg1_idx -= 8; | |
2385 | else | |
2386 | vht_oper->center_freq_seg1_idx += 8; | |
fb28ec0c AN |
2387 | break; |
2388 | case NL80211_CHAN_WIDTH_80P80: | |
23665aaf JM |
2389 | /* |
2390 | * Convert 80+80 MHz channel width to new style as interop | |
2391 | * workaround. | |
2392 | */ | |
2393 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; | |
fb28ec0c AN |
2394 | break; |
2395 | case NL80211_CHAN_WIDTH_80: | |
2396 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; | |
2397 | break; | |
2398 | default: | |
2399 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; | |
2400 | break; | |
2401 | } | |
2402 | ||
2403 | /* don't require special VHT peer rates */ | |
2404 | vht_oper->basic_mcs_set = cpu_to_le16(0xffff); | |
2405 | ||
2406 | return pos + sizeof(struct ieee80211_vht_operation); | |
2407 | } | |
2408 | ||
8ac3c704 JB |
2409 | bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, |
2410 | struct cfg80211_chan_def *chandef) | |
42e7aa77 AS |
2411 | { |
2412 | enum nl80211_channel_type channel_type; | |
2413 | ||
8ac3c704 JB |
2414 | if (!ht_oper) |
2415 | return false; | |
42e7aa77 | 2416 | |
074d46d1 | 2417 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2418 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2419 | channel_type = NL80211_CHAN_HT20; | |
2420 | break; | |
2421 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2422 | channel_type = NL80211_CHAN_HT40PLUS; | |
2423 | break; | |
2424 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2425 | channel_type = NL80211_CHAN_HT40MINUS; | |
2426 | break; | |
2427 | default: | |
2428 | channel_type = NL80211_CHAN_NO_HT; | |
8ac3c704 | 2429 | return false; |
42e7aa77 AS |
2430 | } |
2431 | ||
8ac3c704 JB |
2432 | cfg80211_chandef_create(chandef, chandef->chan, channel_type); |
2433 | return true; | |
42e7aa77 AS |
2434 | } |
2435 | ||
8ac3c704 JB |
2436 | bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, |
2437 | struct cfg80211_chan_def *chandef) | |
abcff6ef | 2438 | { |
8ac3c704 JB |
2439 | struct cfg80211_chan_def new = *chandef; |
2440 | int cf1, cf2; | |
2441 | ||
abcff6ef | 2442 | if (!oper) |
8ac3c704 | 2443 | return false; |
abcff6ef | 2444 | |
8ac3c704 JB |
2445 | cf1 = ieee80211_channel_to_frequency(oper->center_freq_seg1_idx, |
2446 | chandef->chan->band); | |
2447 | cf2 = ieee80211_channel_to_frequency(oper->center_freq_seg2_idx, | |
2448 | chandef->chan->band); | |
abcff6ef JD |
2449 | |
2450 | switch (oper->chan_width) { | |
2451 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
2452 | break; | |
2453 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
8ac3c704 JB |
2454 | new.width = NL80211_CHAN_WIDTH_80; |
2455 | new.center_freq1 = cf1; | |
23665aaf JM |
2456 | /* If needed, adjust based on the newer interop workaround. */ |
2457 | if (oper->center_freq_seg2_idx) { | |
2458 | unsigned int diff; | |
2459 | ||
2460 | diff = abs(oper->center_freq_seg2_idx - | |
2461 | oper->center_freq_seg1_idx); | |
2462 | if (diff == 8) { | |
2463 | new.width = NL80211_CHAN_WIDTH_160; | |
2464 | new.center_freq1 = cf2; | |
2465 | } else if (diff > 8) { | |
2466 | new.width = NL80211_CHAN_WIDTH_80P80; | |
2467 | new.center_freq2 = cf2; | |
2468 | } | |
2469 | } | |
abcff6ef JD |
2470 | break; |
2471 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
8ac3c704 JB |
2472 | new.width = NL80211_CHAN_WIDTH_160; |
2473 | new.center_freq1 = cf1; | |
abcff6ef JD |
2474 | break; |
2475 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
8ac3c704 JB |
2476 | new.width = NL80211_CHAN_WIDTH_80P80; |
2477 | new.center_freq1 = cf1; | |
2478 | new.center_freq2 = cf2; | |
abcff6ef JD |
2479 | break; |
2480 | default: | |
8ac3c704 | 2481 | return false; |
abcff6ef JD |
2482 | } |
2483 | ||
8ac3c704 JB |
2484 | if (!cfg80211_chandef_valid(&new)) |
2485 | return false; | |
2486 | ||
2487 | *chandef = new; | |
2488 | return true; | |
abcff6ef JD |
2489 | } |
2490 | ||
2103dec1 SW |
2491 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2492 | const struct ieee80211_supported_band *sband, | |
2493 | const u8 *srates, int srates_len, u32 *rates) | |
2494 | { | |
2495 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2496 | int shift = ieee80211_chandef_get_shift(chandef); | |
2497 | struct ieee80211_rate *br; | |
2498 | int brate, rate, i, j, count = 0; | |
2499 | ||
2500 | *rates = 0; | |
2501 | ||
2502 | for (i = 0; i < srates_len; i++) { | |
2503 | rate = srates[i] & 0x7f; | |
2504 | ||
2505 | for (j = 0; j < sband->n_bitrates; j++) { | |
2506 | br = &sband->bitrates[j]; | |
2507 | if ((rate_flags & br->flags) != rate_flags) | |
2508 | continue; | |
2509 | ||
2510 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2511 | if (brate == rate) { | |
2512 | *rates |= BIT(j); | |
2513 | count++; | |
2514 | break; | |
2515 | } | |
2516 | } | |
2517 | } | |
2518 | return count; | |
2519 | } | |
2520 | ||
fc8a7321 | 2521 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2522 | struct sk_buff *skb, bool need_basic, |
2523 | enum ieee80211_band band) | |
768db343 | 2524 | { |
768db343 AN |
2525 | struct ieee80211_local *local = sdata->local; |
2526 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2527 | int rate, shift; |
768db343 | 2528 | u8 i, rates, *pos; |
fc8a7321 | 2529 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2530 | u32 rate_flags; |
768db343 | 2531 | |
2103dec1 SW |
2532 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2533 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2534 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2535 | rates = 0; |
2536 | for (i = 0; i < sband->n_bitrates; i++) { | |
2537 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2538 | continue; | |
2539 | rates++; | |
2540 | } | |
768db343 AN |
2541 | if (rates > 8) |
2542 | rates = 8; | |
2543 | ||
2544 | if (skb_tailroom(skb) < rates + 2) | |
2545 | return -ENOMEM; | |
2546 | ||
2547 | pos = skb_put(skb, rates + 2); | |
2548 | *pos++ = WLAN_EID_SUPP_RATES; | |
2549 | *pos++ = rates; | |
2550 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2551 | u8 basic = 0; |
2103dec1 SW |
2552 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2553 | continue; | |
2554 | ||
657c3e0c AN |
2555 | if (need_basic && basic_rates & BIT(i)) |
2556 | basic = 0x80; | |
768db343 | 2557 | rate = sband->bitrates[i].bitrate; |
2103dec1 SW |
2558 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2559 | 5 * (1 << shift)); | |
2560 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2561 | } |
2562 | ||
2563 | return 0; | |
2564 | } | |
2565 | ||
fc8a7321 | 2566 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2567 | struct sk_buff *skb, bool need_basic, |
2568 | enum ieee80211_band band) | |
768db343 | 2569 | { |
768db343 AN |
2570 | struct ieee80211_local *local = sdata->local; |
2571 | struct ieee80211_supported_band *sband; | |
cc63ec76 | 2572 | int rate, shift; |
768db343 | 2573 | u8 i, exrates, *pos; |
fc8a7321 | 2574 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2575 | u32 rate_flags; |
2576 | ||
2577 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2578 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2579 | |
6b77863b | 2580 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2581 | exrates = 0; |
2582 | for (i = 0; i < sband->n_bitrates; i++) { | |
2583 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2584 | continue; | |
2585 | exrates++; | |
2586 | } | |
2587 | ||
768db343 AN |
2588 | if (exrates > 8) |
2589 | exrates -= 8; | |
2590 | else | |
2591 | exrates = 0; | |
2592 | ||
2593 | if (skb_tailroom(skb) < exrates + 2) | |
2594 | return -ENOMEM; | |
2595 | ||
2596 | if (exrates) { | |
2597 | pos = skb_put(skb, exrates + 2); | |
2598 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2599 | *pos++ = exrates; | |
2600 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c | 2601 | u8 basic = 0; |
2103dec1 SW |
2602 | if ((rate_flags & sband->bitrates[i].flags) |
2603 | != rate_flags) | |
2604 | continue; | |
657c3e0c AN |
2605 | if (need_basic && basic_rates & BIT(i)) |
2606 | basic = 0x80; | |
2103dec1 SW |
2607 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2608 | 5 * (1 << shift)); | |
2609 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2610 | } |
2611 | } | |
2612 | return 0; | |
2613 | } | |
1dae27f8 WYG |
2614 | |
2615 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2616 | { | |
2617 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2618 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2619 | ||
be6bcabc WYG |
2620 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2621 | /* non-managed type inferfaces */ | |
2622 | return 0; | |
2623 | } | |
338c17ae | 2624 | return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); |
1dae27f8 | 2625 | } |
0d8a0a17 | 2626 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2627 | |
2628 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2629 | { | |
2630 | if (!mcs) | |
2631 | return 1; | |
2632 | ||
2633 | /* TODO: consider rx_highest */ | |
2634 | ||
2635 | if (mcs->rx_mask[3]) | |
2636 | return 4; | |
2637 | if (mcs->rx_mask[2]) | |
2638 | return 3; | |
2639 | if (mcs->rx_mask[1]) | |
2640 | return 2; | |
2641 | return 1; | |
2642 | } | |
f4bda337 TP |
2643 | |
2644 | /** | |
2645 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2646 | * @local: mac80211 hw info struct | |
2647 | * @status: RX status | |
2648 | * @mpdu_len: total MPDU length (including FCS) | |
2649 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2650 | * | |
2651 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2652 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2653 | * the timestamp to TSF at beginning of MPDU reception. | |
2654 | */ | |
2655 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2656 | struct ieee80211_rx_status *status, | |
2657 | unsigned int mpdu_len, | |
2658 | unsigned int mpdu_offset) | |
2659 | { | |
2660 | u64 ts = status->mactime; | |
2661 | struct rate_info ri; | |
2662 | u16 rate; | |
2663 | ||
2664 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2665 | return 0; | |
2666 | ||
2667 | memset(&ri, 0, sizeof(ri)); | |
2668 | ||
2669 | /* Fill cfg80211 rate info */ | |
2670 | if (status->flag & RX_FLAG_HT) { | |
2671 | ri.mcs = status->rate_idx; | |
2672 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2673 | if (status->flag & RX_FLAG_40MHZ) | |
b51f3bee JB |
2674 | ri.bw = RATE_INFO_BW_40; |
2675 | else | |
2676 | ri.bw = RATE_INFO_BW_20; | |
f4bda337 TP |
2677 | if (status->flag & RX_FLAG_SHORT_GI) |
2678 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2679 | } else if (status->flag & RX_FLAG_VHT) { |
2680 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2681 | ri.mcs = status->rate_idx; | |
2682 | ri.nss = status->vht_nss; | |
2683 | if (status->flag & RX_FLAG_40MHZ) | |
b51f3bee JB |
2684 | ri.bw = RATE_INFO_BW_40; |
2685 | else if (status->vht_flag & RX_VHT_FLAG_80MHZ) | |
2686 | ri.bw = RATE_INFO_BW_80; | |
2687 | else if (status->vht_flag & RX_VHT_FLAG_160MHZ) | |
2688 | ri.bw = RATE_INFO_BW_160; | |
2689 | else | |
2690 | ri.bw = RATE_INFO_BW_20; | |
5614618e JB |
2691 | if (status->flag & RX_FLAG_SHORT_GI) |
2692 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2693 | } else { |
2694 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2695 | int shift = 0; |
2696 | int bitrate; | |
2697 | ||
b51f3bee | 2698 | if (status->flag & RX_FLAG_10MHZ) { |
2103dec1 | 2699 | shift = 1; |
b51f3bee JB |
2700 | ri.bw = RATE_INFO_BW_10; |
2701 | } else if (status->flag & RX_FLAG_5MHZ) { | |
2103dec1 | 2702 | shift = 2; |
b51f3bee JB |
2703 | ri.bw = RATE_INFO_BW_5; |
2704 | } else { | |
2705 | ri.bw = RATE_INFO_BW_20; | |
2706 | } | |
f4bda337 TP |
2707 | |
2708 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2709 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2710 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4a0f0c5 JB |
2711 | |
2712 | if (status->flag & RX_FLAG_MACTIME_PLCP_START) { | |
2713 | /* TODO: handle HT/VHT preambles */ | |
2714 | if (status->band == IEEE80211_BAND_5GHZ) { | |
2715 | ts += 20 << shift; | |
2716 | mpdu_offset += 2; | |
2717 | } else if (status->flag & RX_FLAG_SHORTPRE) { | |
2718 | ts += 96; | |
2719 | } else { | |
2720 | ts += 192; | |
2721 | } | |
2722 | } | |
f4bda337 TP |
2723 | } |
2724 | ||
2725 | rate = cfg80211_calculate_bitrate(&ri); | |
d86aa4f8 JB |
2726 | if (WARN_ONCE(!rate, |
2727 | "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n", | |
2728 | status->flag, status->rate_idx, status->vht_nss)) | |
2729 | return 0; | |
f4bda337 TP |
2730 | |
2731 | /* rewind from end of MPDU */ | |
2732 | if (status->flag & RX_FLAG_MACTIME_END) | |
2733 | ts -= mpdu_len * 8 * 10 / rate; | |
2734 | ||
2735 | ts += mpdu_offset * 8 * 10 / rate; | |
2736 | ||
2737 | return ts; | |
2738 | } | |
164eb02d SW |
2739 | |
2740 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2741 | { | |
2742 | struct ieee80211_sub_if_data *sdata; | |
d2859df5 | 2743 | struct cfg80211_chan_def chandef; |
164eb02d | 2744 | |
34a3740d | 2745 | mutex_lock(&local->mtx); |
164eb02d SW |
2746 | mutex_lock(&local->iflist_mtx); |
2747 | list_for_each_entry(sdata, &local->interfaces, list) { | |
34a3740d JB |
2748 | /* it might be waiting for the local->mtx, but then |
2749 | * by the time it gets it, sdata->wdev.cac_started | |
2750 | * will no longer be true | |
2751 | */ | |
2752 | cancel_delayed_work(&sdata->dfs_cac_timer_work); | |
164eb02d SW |
2753 | |
2754 | if (sdata->wdev.cac_started) { | |
d2859df5 | 2755 | chandef = sdata->vif.bss_conf.chandef; |
164eb02d SW |
2756 | ieee80211_vif_release_channel(sdata); |
2757 | cfg80211_cac_event(sdata->dev, | |
d2859df5 | 2758 | &chandef, |
164eb02d SW |
2759 | NL80211_RADAR_CAC_ABORTED, |
2760 | GFP_KERNEL); | |
2761 | } | |
2762 | } | |
2763 | mutex_unlock(&local->iflist_mtx); | |
34a3740d | 2764 | mutex_unlock(&local->mtx); |
164eb02d SW |
2765 | } |
2766 | ||
2767 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2768 | { | |
2769 | struct ieee80211_local *local = | |
2770 | container_of(work, struct ieee80211_local, radar_detected_work); | |
84a3d1c9 | 2771 | struct cfg80211_chan_def chandef = local->hw.conf.chandef; |
486cf4c0 MK |
2772 | struct ieee80211_chanctx *ctx; |
2773 | int num_chanctx = 0; | |
2774 | ||
2775 | mutex_lock(&local->chanctx_mtx); | |
2776 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
2777 | if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) | |
2778 | continue; | |
2779 | ||
2780 | num_chanctx++; | |
2781 | chandef = ctx->conf.def; | |
2782 | } | |
2783 | mutex_unlock(&local->chanctx_mtx); | |
164eb02d SW |
2784 | |
2785 | ieee80211_dfs_cac_cancel(local); | |
2786 | ||
486cf4c0 MK |
2787 | if (num_chanctx > 1) |
2788 | /* XXX: multi-channel is not supported yet */ | |
164eb02d | 2789 | WARN_ON(1); |
84a3d1c9 | 2790 | else |
164eb02d | 2791 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
164eb02d SW |
2792 | } |
2793 | ||
2794 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2795 | { | |
2796 | struct ieee80211_local *local = hw_to_local(hw); | |
2797 | ||
2798 | trace_api_radar_detected(local); | |
2799 | ||
2800 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2801 | } | |
2802 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2803 | |
2804 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2805 | { | |
2806 | u32 ret; | |
2807 | int tmp; | |
2808 | ||
2809 | switch (c->width) { | |
2810 | case NL80211_CHAN_WIDTH_20: | |
2811 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2812 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2813 | break; | |
2814 | case NL80211_CHAN_WIDTH_40: | |
2815 | c->width = NL80211_CHAN_WIDTH_20; | |
2816 | c->center_freq1 = c->chan->center_freq; | |
2817 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2818 | IEEE80211_STA_DISABLE_VHT; | |
2819 | break; | |
2820 | case NL80211_CHAN_WIDTH_80: | |
2821 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2822 | /* n_P40 */ | |
2823 | tmp /= 2; | |
2824 | /* freq_P40 */ | |
2825 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2826 | c->width = NL80211_CHAN_WIDTH_40; | |
2827 | ret = IEEE80211_STA_DISABLE_VHT; | |
2828 | break; | |
2829 | case NL80211_CHAN_WIDTH_80P80: | |
2830 | c->center_freq2 = 0; | |
2831 | c->width = NL80211_CHAN_WIDTH_80; | |
2832 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2833 | IEEE80211_STA_DISABLE_160MHZ; | |
2834 | break; | |
2835 | case NL80211_CHAN_WIDTH_160: | |
2836 | /* n_P20 */ | |
2837 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2838 | /* n_P80 */ | |
2839 | tmp /= 4; | |
2840 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2841 | c->width = NL80211_CHAN_WIDTH_80; | |
2842 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2843 | IEEE80211_STA_DISABLE_160MHZ; | |
2844 | break; | |
2845 | default: | |
2846 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2847 | WARN_ON_ONCE(1); | |
2848 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2849 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2850 | break; | |
2851 | case NL80211_CHAN_WIDTH_5: | |
2852 | case NL80211_CHAN_WIDTH_10: | |
2853 | WARN_ON_ONCE(1); | |
2854 | /* keep c->width */ | |
2855 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2856 | break; | |
2857 | } | |
2858 | ||
2859 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2860 | ||
2861 | return ret; | |
2862 | } | |
687da132 EG |
2863 | |
2864 | /* | |
2865 | * Returns true if smps_mode_new is strictly more restrictive than | |
2866 | * smps_mode_old. | |
2867 | */ | |
2868 | bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, | |
2869 | enum ieee80211_smps_mode smps_mode_new) | |
2870 | { | |
2871 | if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || | |
2872 | smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) | |
2873 | return false; | |
2874 | ||
2875 | switch (smps_mode_old) { | |
2876 | case IEEE80211_SMPS_STATIC: | |
2877 | return false; | |
2878 | case IEEE80211_SMPS_DYNAMIC: | |
2879 | return smps_mode_new == IEEE80211_SMPS_STATIC; | |
2880 | case IEEE80211_SMPS_OFF: | |
2881 | return smps_mode_new != IEEE80211_SMPS_OFF; | |
2882 | default: | |
2883 | WARN_ON(1); | |
2884 | } | |
2885 | ||
2886 | return false; | |
2887 | } | |
c6da674a CYY |
2888 | |
2889 | int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, | |
2890 | struct cfg80211_csa_settings *csa_settings) | |
2891 | { | |
2892 | struct sk_buff *skb; | |
2893 | struct ieee80211_mgmt *mgmt; | |
2894 | struct ieee80211_local *local = sdata->local; | |
2895 | int freq; | |
2896 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + | |
2897 | sizeof(mgmt->u.action.u.chan_switch); | |
2898 | u8 *pos; | |
2899 | ||
2900 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
2901 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) | |
2902 | return -EOPNOTSUPP; | |
2903 | ||
2904 | skb = dev_alloc_skb(local->tx_headroom + hdr_len + | |
2905 | 5 + /* channel switch announcement element */ | |
2906 | 3 + /* secondary channel offset element */ | |
2907 | 8); /* mesh channel switch parameters element */ | |
2908 | if (!skb) | |
2909 | return -ENOMEM; | |
2910 | ||
2911 | skb_reserve(skb, local->tx_headroom); | |
2912 | mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); | |
2913 | memset(mgmt, 0, hdr_len); | |
2914 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2915 | IEEE80211_STYPE_ACTION); | |
2916 | ||
2917 | eth_broadcast_addr(mgmt->da); | |
2918 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
2919 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2920 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); | |
2921 | } else { | |
2922 | struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; | |
2923 | memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); | |
2924 | } | |
2925 | mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
2926 | mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; | |
2927 | pos = skb_put(skb, 5); | |
2928 | *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ | |
2929 | *pos++ = 3; /* IE length */ | |
2930 | *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ | |
2931 | freq = csa_settings->chandef.chan->center_freq; | |
2932 | *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ | |
2933 | *pos++ = csa_settings->count; /* count */ | |
2934 | ||
2935 | if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { | |
2936 | enum nl80211_channel_type ch_type; | |
2937 | ||
2938 | skb_put(skb, 3); | |
2939 | *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ | |
2940 | *pos++ = 1; /* IE length */ | |
2941 | ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); | |
2942 | if (ch_type == NL80211_CHAN_HT40PLUS) | |
2943 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2944 | else | |
2945 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2946 | } | |
2947 | ||
2948 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2949 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
c6da674a CYY |
2950 | |
2951 | skb_put(skb, 8); | |
2952 | *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ | |
2953 | *pos++ = 6; /* IE length */ | |
2954 | *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ | |
2955 | *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ | |
2956 | *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; | |
2957 | *pos++ |= csa_settings->block_tx ? | |
2958 | WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; | |
2959 | put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ | |
2960 | pos += 2; | |
ca91dc97 | 2961 | put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
c6da674a | 2962 | pos += 2; |
c6da674a CYY |
2963 | } |
2964 | ||
2965 | ieee80211_tx_skb(sdata, skb); | |
2966 | return 0; | |
2967 | } | |
2475b1cc MS |
2968 | |
2969 | bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) | |
2970 | { | |
2971 | return !(cs == NULL || cs->cipher == 0 || | |
2972 | cs->hdr_len < cs->pn_len + cs->pn_off || | |
2973 | cs->hdr_len <= cs->key_idx_off || | |
2974 | cs->key_idx_shift > 7 || | |
2975 | cs->key_idx_mask == 0); | |
2976 | } | |
2977 | ||
2978 | bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) | |
2979 | { | |
2980 | int i; | |
2981 | ||
2982 | /* Ensure we have enough iftype bitmap space for all iftype values */ | |
2983 | WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); | |
2984 | ||
2985 | for (i = 0; i < n; i++) | |
2986 | if (!ieee80211_cs_valid(&cs[i])) | |
2987 | return false; | |
2988 | ||
2989 | return true; | |
2990 | } | |
2991 | ||
2992 | const struct ieee80211_cipher_scheme * | |
2993 | ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, | |
2994 | enum nl80211_iftype iftype) | |
2995 | { | |
2996 | const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; | |
2997 | int n = local->hw.n_cipher_schemes; | |
2998 | int i; | |
2999 | const struct ieee80211_cipher_scheme *cs = NULL; | |
3000 | ||
3001 | for (i = 0; i < n; i++) { | |
3002 | if (l[i].cipher == cipher) { | |
3003 | cs = &l[i]; | |
3004 | break; | |
3005 | } | |
3006 | } | |
3007 | ||
3008 | if (!cs || !(cs->iftype & BIT(iftype))) | |
3009 | return NULL; | |
3010 | ||
3011 | return cs; | |
3012 | } | |
3013 | ||
3014 | int ieee80211_cs_headroom(struct ieee80211_local *local, | |
3015 | struct cfg80211_crypto_settings *crypto, | |
3016 | enum nl80211_iftype iftype) | |
3017 | { | |
3018 | const struct ieee80211_cipher_scheme *cs; | |
3019 | int headroom = IEEE80211_ENCRYPT_HEADROOM; | |
3020 | int i; | |
3021 | ||
3022 | for (i = 0; i < crypto->n_ciphers_pairwise; i++) { | |
3023 | cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], | |
3024 | iftype); | |
3025 | ||
3026 | if (cs && headroom < cs->hdr_len) | |
3027 | headroom = cs->hdr_len; | |
3028 | } | |
3029 | ||
3030 | cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); | |
3031 | if (cs && headroom < cs->hdr_len) | |
3032 | headroom = cs->hdr_len; | |
3033 | ||
3034 | return headroom; | |
3035 | } | |
a7022e65 FF |
3036 | |
3037 | static bool | |
3038 | ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) | |
3039 | { | |
3040 | s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); | |
3041 | int skip; | |
3042 | ||
3043 | if (end > 0) | |
3044 | return false; | |
3045 | ||
519ee691 JD |
3046 | /* One shot NOA */ |
3047 | if (data->count[i] == 1) | |
3048 | return false; | |
3049 | ||
3050 | if (data->desc[i].interval == 0) | |
3051 | return false; | |
3052 | ||
a7022e65 FF |
3053 | /* End time is in the past, check for repetitions */ |
3054 | skip = DIV_ROUND_UP(-end, data->desc[i].interval); | |
3055 | if (data->count[i] < 255) { | |
3056 | if (data->count[i] <= skip) { | |
3057 | data->count[i] = 0; | |
3058 | return false; | |
3059 | } | |
3060 | ||
3061 | data->count[i] -= skip; | |
3062 | } | |
3063 | ||
3064 | data->desc[i].start += skip * data->desc[i].interval; | |
3065 | ||
3066 | return true; | |
3067 | } | |
3068 | ||
3069 | static bool | |
3070 | ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, | |
3071 | s32 *offset) | |
3072 | { | |
3073 | bool ret = false; | |
3074 | int i; | |
3075 | ||
3076 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3077 | s32 cur; | |
3078 | ||
3079 | if (!data->count[i]) | |
3080 | continue; | |
3081 | ||
3082 | if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) | |
3083 | ret = true; | |
3084 | ||
3085 | cur = data->desc[i].start - tsf; | |
3086 | if (cur > *offset) | |
3087 | continue; | |
3088 | ||
3089 | cur = data->desc[i].start + data->desc[i].duration - tsf; | |
3090 | if (cur > *offset) | |
3091 | *offset = cur; | |
3092 | } | |
3093 | ||
3094 | return ret; | |
3095 | } | |
3096 | ||
3097 | static u32 | |
3098 | ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) | |
3099 | { | |
3100 | s32 offset = 0; | |
3101 | int tries = 0; | |
3102 | /* | |
3103 | * arbitrary limit, used to avoid infinite loops when combined NoA | |
3104 | * descriptors cover the full time period. | |
3105 | */ | |
3106 | int max_tries = 5; | |
3107 | ||
3108 | ieee80211_extend_absent_time(data, tsf, &offset); | |
3109 | do { | |
3110 | if (!ieee80211_extend_absent_time(data, tsf, &offset)) | |
3111 | break; | |
3112 | ||
3113 | tries++; | |
3114 | } while (tries < max_tries); | |
3115 | ||
3116 | return offset; | |
3117 | } | |
3118 | ||
3119 | void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) | |
3120 | { | |
3121 | u32 next_offset = BIT(31) - 1; | |
3122 | int i; | |
3123 | ||
3124 | data->absent = 0; | |
3125 | data->has_next_tsf = false; | |
3126 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3127 | s32 start; | |
3128 | ||
3129 | if (!data->count[i]) | |
3130 | continue; | |
3131 | ||
3132 | ieee80211_extend_noa_desc(data, tsf, i); | |
3133 | start = data->desc[i].start - tsf; | |
3134 | if (start <= 0) | |
3135 | data->absent |= BIT(i); | |
3136 | ||
3137 | if (next_offset > start) | |
3138 | next_offset = start; | |
3139 | ||
3140 | data->has_next_tsf = true; | |
3141 | } | |
3142 | ||
3143 | if (data->absent) | |
3144 | next_offset = ieee80211_get_noa_absent_time(data, tsf); | |
3145 | ||
3146 | data->next_tsf = tsf + next_offset; | |
3147 | } | |
3148 | EXPORT_SYMBOL(ieee80211_update_p2p_noa); | |
3149 | ||
3150 | int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, | |
3151 | struct ieee80211_noa_data *data, u32 tsf) | |
3152 | { | |
3153 | int ret = 0; | |
3154 | int i; | |
3155 | ||
3156 | memset(data, 0, sizeof(*data)); | |
3157 | ||
3158 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
3159 | const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; | |
3160 | ||
3161 | if (!desc->count || !desc->duration) | |
3162 | continue; | |
3163 | ||
3164 | data->count[i] = desc->count; | |
3165 | data->desc[i].start = le32_to_cpu(desc->start_time); | |
3166 | data->desc[i].duration = le32_to_cpu(desc->duration); | |
3167 | data->desc[i].interval = le32_to_cpu(desc->interval); | |
3168 | ||
3169 | if (data->count[i] > 1 && | |
3170 | data->desc[i].interval < data->desc[i].duration) | |
3171 | continue; | |
3172 | ||
3173 | ieee80211_extend_noa_desc(data, tsf, i); | |
3174 | ret++; | |
3175 | } | |
3176 | ||
3177 | if (ret) | |
3178 | ieee80211_update_p2p_noa(data, tsf); | |
3179 | ||
3180 | return ret; | |
3181 | } | |
3182 | EXPORT_SYMBOL(ieee80211_parse_p2p_noa); | |
057d5f4b TP |
3183 | |
3184 | void ieee80211_recalc_dtim(struct ieee80211_local *local, | |
3185 | struct ieee80211_sub_if_data *sdata) | |
3186 | { | |
3187 | u64 tsf = drv_get_tsf(local, sdata); | |
3188 | u64 dtim_count = 0; | |
3189 | u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; | |
3190 | u8 dtim_period = sdata->vif.bss_conf.dtim_period; | |
3191 | struct ps_data *ps; | |
3192 | u8 bcns_from_dtim; | |
3193 | ||
3194 | if (tsf == -1ULL || !beacon_int || !dtim_period) | |
3195 | return; | |
3196 | ||
3197 | if (sdata->vif.type == NL80211_IFTYPE_AP || | |
3198 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
3199 | if (!sdata->bss) | |
3200 | return; | |
3201 | ||
3202 | ps = &sdata->bss->ps; | |
3203 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
3204 | ps = &sdata->u.mesh.ps; | |
3205 | } else { | |
3206 | return; | |
3207 | } | |
3208 | ||
3209 | /* | |
3210 | * actually finds last dtim_count, mac80211 will update in | |
3211 | * __beacon_add_tim(). | |
3212 | * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period | |
3213 | */ | |
3214 | do_div(tsf, beacon_int); | |
3215 | bcns_from_dtim = do_div(tsf, dtim_period); | |
3216 | /* just had a DTIM */ | |
3217 | if (!bcns_from_dtim) | |
3218 | dtim_count = 0; | |
3219 | else | |
3220 | dtim_count = dtim_period - bcns_from_dtim; | |
3221 | ||
3222 | ps->dtim_count = dtim_count; | |
3223 | } | |
73de86a3 | 3224 | |
71e6195e MK |
3225 | static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, |
3226 | struct ieee80211_chanctx *ctx) | |
3227 | { | |
3228 | struct ieee80211_sub_if_data *sdata; | |
3229 | u8 radar_detect = 0; | |
3230 | ||
3231 | lockdep_assert_held(&local->chanctx_mtx); | |
3232 | ||
3233 | if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) | |
3234 | return 0; | |
3235 | ||
3236 | list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) | |
3237 | if (sdata->reserved_radar_required) | |
3238 | radar_detect |= BIT(sdata->reserved_chandef.width); | |
3239 | ||
3240 | /* | |
3241 | * An in-place reservation context should not have any assigned vifs | |
3242 | * until it replaces the other context. | |
3243 | */ | |
3244 | WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && | |
3245 | !list_empty(&ctx->assigned_vifs)); | |
3246 | ||
3247 | list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list) | |
3248 | if (sdata->radar_required) | |
3249 | radar_detect |= BIT(sdata->vif.bss_conf.chandef.width); | |
3250 | ||
3251 | return radar_detect; | |
3252 | } | |
3253 | ||
73de86a3 LC |
3254 | int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, |
3255 | const struct cfg80211_chan_def *chandef, | |
3256 | enum ieee80211_chanctx_mode chanmode, | |
3257 | u8 radar_detect) | |
3258 | { | |
3259 | struct ieee80211_local *local = sdata->local; | |
3260 | struct ieee80211_sub_if_data *sdata_iter; | |
3261 | enum nl80211_iftype iftype = sdata->wdev.iftype; | |
3262 | int num[NUM_NL80211_IFTYPES]; | |
3263 | struct ieee80211_chanctx *ctx; | |
b6a55015 | 3264 | int num_different_channels = 0; |
73de86a3 LC |
3265 | int total = 1; |
3266 | ||
3267 | lockdep_assert_held(&local->chanctx_mtx); | |
3268 | ||
3269 | if (WARN_ON(hweight32(radar_detect) > 1)) | |
3270 | return -EINVAL; | |
3271 | ||
b6a55015 LC |
3272 | if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
3273 | !chandef->chan)) | |
73de86a3 LC |
3274 | return -EINVAL; |
3275 | ||
b6a55015 LC |
3276 | if (chandef) |
3277 | num_different_channels = 1; | |
3278 | ||
73de86a3 LC |
3279 | if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) |
3280 | return -EINVAL; | |
3281 | ||
3282 | /* Always allow software iftypes */ | |
3283 | if (local->hw.wiphy->software_iftypes & BIT(iftype)) { | |
3284 | if (radar_detect) | |
3285 | return -EINVAL; | |
3286 | return 0; | |
3287 | } | |
3288 | ||
3289 | memset(num, 0, sizeof(num)); | |
3290 | ||
3291 | if (iftype != NL80211_IFTYPE_UNSPECIFIED) | |
3292 | num[iftype] = 1; | |
3293 | ||
3294 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3295 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3296 | continue; | |
71e6195e | 3297 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
73de86a3 LC |
3298 | if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { |
3299 | num_different_channels++; | |
3300 | continue; | |
3301 | } | |
b6a55015 | 3302 | if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
73de86a3 LC |
3303 | cfg80211_chandef_compatible(chandef, |
3304 | &ctx->conf.def)) | |
3305 | continue; | |
3306 | num_different_channels++; | |
3307 | } | |
3308 | ||
3309 | list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { | |
3310 | struct wireless_dev *wdev_iter; | |
3311 | ||
3312 | wdev_iter = &sdata_iter->wdev; | |
3313 | ||
3314 | if (sdata_iter == sdata || | |
0f611d28 | 3315 | !ieee80211_sdata_running(sdata_iter) || |
73de86a3 LC |
3316 | local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) |
3317 | continue; | |
3318 | ||
3319 | num[wdev_iter->iftype]++; | |
3320 | total++; | |
3321 | } | |
3322 | ||
3323 | if (total == 1 && !radar_detect) | |
3324 | return 0; | |
3325 | ||
3326 | return cfg80211_check_combinations(local->hw.wiphy, | |
3327 | num_different_channels, | |
3328 | radar_detect, num); | |
3329 | } | |
6fa001bc MK |
3330 | |
3331 | static void | |
3332 | ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, | |
3333 | void *data) | |
3334 | { | |
3335 | u32 *max_num_different_channels = data; | |
3336 | ||
3337 | *max_num_different_channels = max(*max_num_different_channels, | |
3338 | c->num_different_channels); | |
3339 | } | |
3340 | ||
3341 | int ieee80211_max_num_channels(struct ieee80211_local *local) | |
3342 | { | |
3343 | struct ieee80211_sub_if_data *sdata; | |
3344 | int num[NUM_NL80211_IFTYPES] = {}; | |
3345 | struct ieee80211_chanctx *ctx; | |
3346 | int num_different_channels = 0; | |
3347 | u8 radar_detect = 0; | |
3348 | u32 max_num_different_channels = 1; | |
3349 | int err; | |
3350 | ||
3351 | lockdep_assert_held(&local->chanctx_mtx); | |
3352 | ||
3353 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3354 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3355 | continue; | |
3356 | ||
6fa001bc MK |
3357 | num_different_channels++; |
3358 | ||
71e6195e | 3359 | radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); |
6fa001bc MK |
3360 | } |
3361 | ||
3362 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3363 | num[sdata->wdev.iftype]++; | |
3364 | ||
3365 | err = cfg80211_iter_combinations(local->hw.wiphy, | |
3366 | num_different_channels, radar_detect, | |
3367 | num, ieee80211_iter_max_chans, | |
3368 | &max_num_different_channels); | |
3369 | if (err < 0) | |
3370 | return err; | |
3371 | ||
3372 | return max_num_different_channels; | |
3373 | } | |
40b861a0 AN |
3374 | |
3375 | u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) | |
3376 | { | |
3377 | *buf++ = WLAN_EID_VENDOR_SPECIFIC; | |
3378 | *buf++ = 7; /* len */ | |
3379 | *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
3380 | *buf++ = 0x50; | |
3381 | *buf++ = 0xf2; | |
3382 | *buf++ = 2; /* WME */ | |
3383 | *buf++ = 0; /* WME info */ | |
3384 | *buf++ = 1; /* WME ver */ | |
3385 | *buf++ = qosinfo; /* U-APSD no in use */ | |
3386 | ||
3387 | return buf; | |
3388 | } | |
ba8c3d6f FF |
3389 | |
3390 | void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, | |
3391 | struct sta_info *sta, | |
3392 | struct txq_info *txqi, int tid) | |
3393 | { | |
3394 | skb_queue_head_init(&txqi->queue); | |
3395 | txqi->txq.vif = &sdata->vif; | |
3396 | ||
3397 | if (sta) { | |
3398 | txqi->txq.sta = &sta->sta; | |
3399 | sta->sta.txq[tid] = &txqi->txq; | |
4d57c678 | 3400 | txqi->txq.tid = tid; |
ba8c3d6f FF |
3401 | txqi->txq.ac = ieee802_1d_to_ac[tid & 7]; |
3402 | } else { | |
3403 | sdata->vif.txq = &txqi->txq; | |
4d57c678 | 3404 | txqi->txq.tid = 0; |
ba8c3d6f FF |
3405 | txqi->txq.ac = IEEE80211_AC_BE; |
3406 | } | |
3407 | } | |
f2ac7e30 MK |
3408 | |
3409 | void ieee80211_txq_get_depth(struct ieee80211_txq *txq, | |
3410 | unsigned long *frame_cnt, | |
3411 | unsigned long *byte_cnt) | |
3412 | { | |
3413 | struct txq_info *txqi = to_txq_info(txq); | |
3414 | ||
3415 | if (frame_cnt) | |
3416 | *frame_cnt = txqi->queue.qlen; | |
3417 | ||
3418 | if (byte_cnt) | |
3419 | *byte_cnt = txqi->byte_cnt; | |
3420 | } | |
3421 | EXPORT_SYMBOL(ieee80211_txq_get_depth); |