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Commit | Line | Data |
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c2d1560a JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * utilities for mac80211 | |
12 | */ | |
13 | ||
14 | #include <net/mac80211.h> | |
15 | #include <linux/netdevice.h> | |
bc3b2d7f | 16 | #include <linux/export.h> |
c2d1560a JB |
17 | #include <linux/types.h> |
18 | #include <linux/slab.h> | |
19 | #include <linux/skbuff.h> | |
20 | #include <linux/etherdevice.h> | |
21 | #include <linux/if_arp.h> | |
c2d1560a | 22 | #include <linux/bitmap.h> |
dd76986b | 23 | #include <linux/crc32.h> |
881d966b | 24 | #include <net/net_namespace.h> |
c2d1560a | 25 | #include <net/cfg80211.h> |
dabeb344 | 26 | #include <net/rtnetlink.h> |
c2d1560a JB |
27 | |
28 | #include "ieee80211_i.h" | |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 | 30 | #include "rate.h" |
ee385855 | 31 | #include "mesh.h" |
c2d1560a | 32 | #include "wme.h" |
f2753ddb | 33 | #include "led.h" |
fffd0934 | 34 | #include "wep.h" |
c2d1560a JB |
35 | |
36 | /* privid for wiphys to determine whether they belong to us or not */ | |
37 | void *mac80211_wiphy_privid = &mac80211_wiphy_privid; | |
38 | ||
9a95371a LR |
39 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
40 | { | |
41 | struct ieee80211_local *local; | |
42 | BUG_ON(!wiphy); | |
43 | ||
44 | local = wiphy_priv(wiphy); | |
45 | return &local->hw; | |
46 | } | |
47 | EXPORT_SYMBOL(wiphy_to_ieee80211_hw); | |
c2d1560a | 48 | |
71364716 | 49 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, |
05c914fe | 50 | enum nl80211_iftype type) |
c2d1560a | 51 | { |
a494bb1c | 52 | __le16 fc = hdr->frame_control; |
c2d1560a | 53 | |
98f0b0a3 RR |
54 | /* drop ACK/CTS frames and incorrect hdr len (ctrl) */ |
55 | if (len < 16) | |
c2d1560a JB |
56 | return NULL; |
57 | ||
a494bb1c | 58 | if (ieee80211_is_data(fc)) { |
98f0b0a3 RR |
59 | if (len < 24) /* drop incorrect hdr len (data) */ |
60 | return NULL; | |
a494bb1c HH |
61 | |
62 | if (ieee80211_has_a4(fc)) | |
c2d1560a | 63 | return NULL; |
a494bb1c HH |
64 | if (ieee80211_has_tods(fc)) |
65 | return hdr->addr1; | |
66 | if (ieee80211_has_fromds(fc)) | |
c2d1560a | 67 | return hdr->addr2; |
a494bb1c HH |
68 | |
69 | return hdr->addr3; | |
70 | } | |
71 | ||
72 | if (ieee80211_is_mgmt(fc)) { | |
98f0b0a3 RR |
73 | if (len < 24) /* drop incorrect hdr len (mgmt) */ |
74 | return NULL; | |
c2d1560a | 75 | return hdr->addr3; |
a494bb1c HH |
76 | } |
77 | ||
78 | if (ieee80211_is_ctl(fc)) { | |
79 | if(ieee80211_is_pspoll(fc)) | |
c2d1560a | 80 | return hdr->addr1; |
a494bb1c HH |
81 | |
82 | if (ieee80211_is_back_req(fc)) { | |
71364716 | 83 | switch (type) { |
05c914fe | 84 | case NL80211_IFTYPE_STATION: |
71364716 | 85 | return hdr->addr2; |
05c914fe JB |
86 | case NL80211_IFTYPE_AP: |
87 | case NL80211_IFTYPE_AP_VLAN: | |
71364716 RR |
88 | return hdr->addr1; |
89 | default: | |
a494bb1c | 90 | break; /* fall through to the return */ |
71364716 RR |
91 | } |
92 | } | |
c2d1560a JB |
93 | } |
94 | ||
95 | return NULL; | |
96 | } | |
97 | ||
5cf121c3 | 98 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
c2d1560a | 99 | { |
252b86c4 | 100 | struct sk_buff *skb; |
2de8e0d9 JB |
101 | struct ieee80211_hdr *hdr; |
102 | ||
252b86c4 | 103 | skb_queue_walk(&tx->skbs, skb) { |
2de8e0d9 JB |
104 | hdr = (struct ieee80211_hdr *) skb->data; |
105 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
252b86c4 | 106 | } |
c2d1560a JB |
107 | } |
108 | ||
4ee73f33 | 109 | int ieee80211_frame_duration(enum ieee80211_band band, size_t len, |
438b61b7 SW |
110 | int rate, int erp, int short_preamble, |
111 | int shift) | |
c2d1560a JB |
112 | { |
113 | int dur; | |
114 | ||
115 | /* calculate duration (in microseconds, rounded up to next higher | |
116 | * integer if it includes a fractional microsecond) to send frame of | |
117 | * len bytes (does not include FCS) at the given rate. Duration will | |
118 | * also include SIFS. | |
119 | * | |
120 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
121 | * DIV_ROUND_UP() operations. | |
438b61b7 SW |
122 | * |
123 | * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and | |
124 | * is assumed to be 0 otherwise. | |
c2d1560a JB |
125 | */ |
126 | ||
4ee73f33 | 127 | if (band == IEEE80211_BAND_5GHZ || erp) { |
c2d1560a JB |
128 | /* |
129 | * OFDM: | |
130 | * | |
131 | * N_DBPS = DATARATE x 4 | |
132 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
133 | * (16 = SIGNAL time, 6 = tail bits) | |
134 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
135 | * | |
136 | * T_SYM = 4 usec | |
438b61b7 | 137 | * 802.11a - 18.5.2: aSIFSTime = 16 usec |
c2d1560a JB |
138 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
139 | * signal ext = 6 usec | |
140 | */ | |
c2d1560a | 141 | dur = 16; /* SIFS + signal ext */ |
438b61b7 SW |
142 | dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ |
143 | dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ | |
438b61b7 SW |
144 | |
145 | /* IEEE 802.11-2012 18.3.2.4: all values above are: | |
146 | * * times 4 for 5 MHz | |
147 | * * times 2 for 10 MHz | |
148 | */ | |
149 | dur *= 1 << shift; | |
2103dec1 SW |
150 | |
151 | /* rates should already consider the channel bandwidth, | |
152 | * don't apply divisor again. | |
153 | */ | |
154 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
155 | 4 * rate); /* T_SYM x N_SYM */ | |
c2d1560a JB |
156 | } else { |
157 | /* | |
158 | * 802.11b or 802.11g with 802.11b compatibility: | |
159 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
160 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
161 | * | |
162 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
163 | * aSIFSTime = 10 usec | |
164 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
165 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
166 | */ | |
167 | dur = 10; /* aSIFSTime = 10 usec */ | |
168 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
169 | ||
170 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
171 | } | |
172 | ||
173 | return dur; | |
174 | } | |
175 | ||
176 | /* Exported duration function for driver use */ | |
32bfd35d JB |
177 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
178 | struct ieee80211_vif *vif, | |
4ee73f33 | 179 | enum ieee80211_band band, |
8318d78a JB |
180 | size_t frame_len, |
181 | struct ieee80211_rate *rate) | |
c2d1560a | 182 | { |
25d834e1 | 183 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 184 | u16 dur; |
438b61b7 | 185 | int erp, shift = 0; |
25d834e1 | 186 | bool short_preamble = false; |
c2d1560a | 187 | |
8318d78a | 188 | erp = 0; |
25d834e1 JB |
189 | if (vif) { |
190 | sdata = vif_to_sdata(vif); | |
bda3933a | 191 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
192 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
193 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 194 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 195 | } |
8318d78a | 196 | |
4ee73f33 | 197 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
438b61b7 | 198 | short_preamble, shift); |
c2d1560a JB |
199 | |
200 | return cpu_to_le16(dur); | |
201 | } | |
202 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
203 | ||
32bfd35d JB |
204 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
205 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 206 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
207 | { |
208 | struct ieee80211_local *local = hw_to_local(hw); | |
209 | struct ieee80211_rate *rate; | |
25d834e1 | 210 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 211 | bool short_preamble; |
2103dec1 | 212 | int erp, shift = 0, bitrate; |
c2d1560a | 213 | u16 dur; |
2e92e6f2 JB |
214 | struct ieee80211_supported_band *sband; |
215 | ||
4ee73f33 | 216 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 217 | |
25d834e1 | 218 | short_preamble = false; |
7e9ed188 | 219 | |
e039fa4a | 220 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
221 | |
222 | erp = 0; | |
25d834e1 JB |
223 | if (vif) { |
224 | sdata = vif_to_sdata(vif); | |
bda3933a | 225 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
226 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
227 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 228 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 229 | } |
c2d1560a | 230 | |
2103dec1 SW |
231 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
232 | ||
c2d1560a | 233 | /* CTS duration */ |
2103dec1 | 234 | dur = ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 235 | erp, short_preamble, shift); |
c2d1560a | 236 | /* Data frame duration */ |
2103dec1 | 237 | dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 238 | erp, short_preamble, shift); |
c2d1560a | 239 | /* ACK duration */ |
2103dec1 | 240 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 241 | erp, short_preamble, shift); |
c2d1560a JB |
242 | |
243 | return cpu_to_le16(dur); | |
244 | } | |
245 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
246 | ||
32bfd35d JB |
247 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
248 | struct ieee80211_vif *vif, | |
c2d1560a | 249 | size_t frame_len, |
e039fa4a | 250 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
251 | { |
252 | struct ieee80211_local *local = hw_to_local(hw); | |
253 | struct ieee80211_rate *rate; | |
25d834e1 | 254 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 255 | bool short_preamble; |
2103dec1 | 256 | int erp, shift = 0, bitrate; |
c2d1560a | 257 | u16 dur; |
2e92e6f2 JB |
258 | struct ieee80211_supported_band *sband; |
259 | ||
4ee73f33 | 260 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 261 | |
25d834e1 | 262 | short_preamble = false; |
7e9ed188 | 263 | |
e039fa4a | 264 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 265 | erp = 0; |
25d834e1 JB |
266 | if (vif) { |
267 | sdata = vif_to_sdata(vif); | |
bda3933a | 268 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
269 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
270 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 271 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 272 | } |
c2d1560a | 273 | |
2103dec1 SW |
274 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
275 | ||
c2d1560a | 276 | /* Data frame duration */ |
2103dec1 | 277 | dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 278 | erp, short_preamble, shift); |
e039fa4a | 279 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 280 | /* ACK duration */ |
2103dec1 | 281 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 282 | erp, short_preamble, shift); |
c2d1560a JB |
283 | } |
284 | ||
285 | return cpu_to_le16(dur); | |
286 | } | |
287 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
288 | ||
3a25a8c8 JB |
289 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
290 | { | |
291 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
292 | int n_acs = IEEE80211_NUM_ACS; |
293 | ||
294 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
295 | n_acs = 1; | |
3a25a8c8 JB |
296 | |
297 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
298 | int ac; | |
299 | ||
f142c6b9 JB |
300 | if (!sdata->dev) |
301 | continue; | |
302 | ||
3a25a8c8 JB |
303 | if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) |
304 | continue; | |
305 | ||
306 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && | |
307 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
308 | continue; | |
309 | ||
a6f38ac3 | 310 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
311 | int ac_queue = sdata->vif.hw_queue[ac]; |
312 | ||
313 | if (ac_queue == queue || | |
314 | (sdata->vif.cab_queue == queue && | |
315 | local->queue_stop_reasons[ac_queue] == 0 && | |
316 | skb_queue_empty(&local->pending[ac_queue]))) | |
317 | netif_wake_subqueue(sdata->dev, ac); | |
318 | } | |
319 | } | |
320 | } | |
321 | ||
ce7c9111 KV |
322 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
323 | enum queue_stop_reason reason) | |
c2d1560a JB |
324 | { |
325 | struct ieee80211_local *local = hw_to_local(hw); | |
326 | ||
b5878a2d JB |
327 | trace_wake_queue(local, queue, reason); |
328 | ||
e4e72fb4 JB |
329 | if (WARN_ON(queue >= hw->queues)) |
330 | return; | |
ce7c9111 | 331 | |
ada15125 JB |
332 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
333 | return; | |
334 | ||
96f5e66e JB |
335 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
336 | ||
337 | if (local->queue_stop_reasons[queue] != 0) | |
338 | /* someone still has this queue stopped */ | |
339 | return; | |
340 | ||
7236fe29 JB |
341 | if (skb_queue_empty(&local->pending[queue])) { |
342 | rcu_read_lock(); | |
3a25a8c8 | 343 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
344 | rcu_read_unlock(); |
345 | } else | |
3b8d81e0 | 346 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 347 | } |
ce7c9111 | 348 | |
96f5e66e JB |
349 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
350 | enum queue_stop_reason reason) | |
ce7c9111 KV |
351 | { |
352 | struct ieee80211_local *local = hw_to_local(hw); | |
353 | unsigned long flags; | |
354 | ||
355 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
356 | __ieee80211_wake_queue(hw, queue, reason); | |
357 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
358 | } | |
359 | ||
360 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
361 | { | |
362 | ieee80211_wake_queue_by_reason(hw, queue, | |
363 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
364 | } | |
c2d1560a JB |
365 | EXPORT_SYMBOL(ieee80211_wake_queue); |
366 | ||
ce7c9111 KV |
367 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
368 | enum queue_stop_reason reason) | |
c2d1560a JB |
369 | { |
370 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 371 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 372 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 373 | |
b5878a2d JB |
374 | trace_stop_queue(local, queue, reason); |
375 | ||
e4e72fb4 JB |
376 | if (WARN_ON(queue >= hw->queues)) |
377 | return; | |
96f5e66e | 378 | |
ada15125 JB |
379 | if (test_bit(reason, &local->queue_stop_reasons[queue])) |
380 | return; | |
381 | ||
2a577d98 | 382 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
cf0277e7 | 383 | |
a6f38ac3 JB |
384 | if (local->hw.queues < IEEE80211_NUM_ACS) |
385 | n_acs = 1; | |
386 | ||
cf0277e7 | 387 | rcu_read_lock(); |
3a25a8c8 JB |
388 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
389 | int ac; | |
390 | ||
f142c6b9 JB |
391 | if (!sdata->dev) |
392 | continue; | |
393 | ||
a6f38ac3 | 394 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
395 | if (sdata->vif.hw_queue[ac] == queue || |
396 | sdata->vif.cab_queue == queue) | |
397 | netif_stop_subqueue(sdata->dev, ac); | |
398 | } | |
399 | } | |
cf0277e7 | 400 | rcu_read_unlock(); |
c2d1560a | 401 | } |
ce7c9111 | 402 | |
96f5e66e JB |
403 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
404 | enum queue_stop_reason reason) | |
ce7c9111 KV |
405 | { |
406 | struct ieee80211_local *local = hw_to_local(hw); | |
407 | unsigned long flags; | |
408 | ||
409 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
410 | __ieee80211_stop_queue(hw, queue, reason); | |
411 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
412 | } | |
413 | ||
414 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
415 | { | |
416 | ieee80211_stop_queue_by_reason(hw, queue, | |
417 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
418 | } | |
c2d1560a JB |
419 | EXPORT_SYMBOL(ieee80211_stop_queue); |
420 | ||
8f77f384 JB |
421 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
422 | struct sk_buff *skb) | |
423 | { | |
424 | struct ieee80211_hw *hw = &local->hw; | |
425 | unsigned long flags; | |
a7bc376c | 426 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 427 | int queue = info->hw_queue; |
a7bc376c JB |
428 | |
429 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 430 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
431 | return; |
432 | } | |
8f77f384 JB |
433 | |
434 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
435 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
3b8d81e0 | 436 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
437 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
438 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
439 | } | |
440 | ||
b0b97a8a JB |
441 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
442 | struct sk_buff_head *skbs, | |
443 | void (*fn)(void *data), void *data) | |
8f77f384 JB |
444 | { |
445 | struct ieee80211_hw *hw = &local->hw; | |
446 | struct sk_buff *skb; | |
447 | unsigned long flags; | |
b0b97a8a | 448 | int queue, i; |
8f77f384 JB |
449 | |
450 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 451 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
452 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
453 | ||
454 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 455 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
456 | continue; |
457 | } | |
458 | ||
3a25a8c8 | 459 | queue = info->hw_queue; |
4644ae89 JB |
460 | |
461 | __ieee80211_stop_queue(hw, queue, | |
462 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
463 | ||
3b8d81e0 | 464 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
465 | } |
466 | ||
50a9432d JB |
467 | if (fn) |
468 | fn(data); | |
469 | ||
3b8d81e0 | 470 | for (i = 0; i < hw->queues; i++) |
8f77f384 JB |
471 | __ieee80211_wake_queue(hw, i, |
472 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
8f77f384 | 473 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
474 | } |
475 | ||
ce7c9111 | 476 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 JB |
477 | unsigned long queues, |
478 | enum queue_stop_reason reason) | |
c2d1560a | 479 | { |
ce7c9111 KV |
480 | struct ieee80211_local *local = hw_to_local(hw); |
481 | unsigned long flags; | |
c2d1560a JB |
482 | int i; |
483 | ||
ce7c9111 KV |
484 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
485 | ||
445ea4e8 | 486 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
487 | __ieee80211_stop_queue(hw, i, reason); |
488 | ||
489 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
490 | } | |
491 | ||
492 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
493 | { | |
445ea4e8 | 494 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
ce7c9111 | 495 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
c2d1560a JB |
496 | } |
497 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
498 | ||
92ab8535 TW |
499 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
500 | { | |
501 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
502 | unsigned long flags; |
503 | int ret; | |
96f5e66e | 504 | |
e4e72fb4 JB |
505 | if (WARN_ON(queue >= hw->queues)) |
506 | return true; | |
96f5e66e | 507 | |
3b8d81e0 | 508 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
509 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
510 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
511 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
512 | return ret; | |
92ab8535 TW |
513 | } |
514 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
515 | ||
ce7c9111 | 516 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 517 | unsigned long queues, |
ce7c9111 | 518 | enum queue_stop_reason reason) |
c2d1560a | 519 | { |
ce7c9111 KV |
520 | struct ieee80211_local *local = hw_to_local(hw); |
521 | unsigned long flags; | |
c2d1560a JB |
522 | int i; |
523 | ||
ce7c9111 KV |
524 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
525 | ||
445ea4e8 | 526 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
527 | __ieee80211_wake_queue(hw, i, reason); |
528 | ||
529 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
530 | } | |
531 | ||
532 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
533 | { | |
445ea4e8 JB |
534 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
535 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
536 | } |
537 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 538 | |
39ecc01d JB |
539 | void ieee80211_flush_queues(struct ieee80211_local *local, |
540 | struct ieee80211_sub_if_data *sdata) | |
541 | { | |
542 | u32 queues; | |
543 | ||
544 | if (!local->ops->flush) | |
545 | return; | |
546 | ||
547 | if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { | |
548 | int ac; | |
549 | ||
550 | queues = 0; | |
551 | ||
552 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
553 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
554 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
555 | queues |= BIT(sdata->vif.cab_queue); | |
556 | } else { | |
557 | /* all queues */ | |
558 | queues = BIT(local->hw.queues) - 1; | |
559 | } | |
560 | ||
445ea4e8 JB |
561 | ieee80211_stop_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, |
562 | IEEE80211_QUEUE_STOP_REASON_FLUSH); | |
563 | ||
39ecc01d | 564 | drv_flush(local, queues, false); |
445ea4e8 JB |
565 | |
566 | ieee80211_wake_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, | |
567 | IEEE80211_QUEUE_STOP_REASON_FLUSH); | |
39ecc01d JB |
568 | } |
569 | ||
c7c71066 JB |
570 | static void __iterate_active_interfaces(struct ieee80211_local *local, |
571 | u32 iter_flags, | |
572 | void (*iterator)(void *data, u8 *mac, | |
573 | struct ieee80211_vif *vif), | |
574 | void *data) | |
dabeb344 | 575 | { |
dabeb344 JB |
576 | struct ieee80211_sub_if_data *sdata; |
577 | ||
c7c71066 | 578 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 579 | switch (sdata->vif.type) { |
05c914fe | 580 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
581 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
582 | continue; | |
583 | break; | |
05c914fe | 584 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 585 | continue; |
2ca27bcf | 586 | default: |
2f561feb ID |
587 | break; |
588 | } | |
8b2c9824 JB |
589 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
590 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
591 | continue; | |
9607e6b6 | 592 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 593 | iterator(data, sdata->vif.addr, |
2f561feb ID |
594 | &sdata->vif); |
595 | } | |
596 | ||
c7c71066 JB |
597 | sdata = rcu_dereference_check(local->monitor_sdata, |
598 | lockdep_is_held(&local->iflist_mtx) || | |
599 | lockdep_rtnl_is_held()); | |
8b2c9824 JB |
600 | if (sdata && |
601 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
602 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b | 603 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 604 | } |
685fb72b | 605 | |
c7c71066 JB |
606 | void ieee80211_iterate_active_interfaces( |
607 | struct ieee80211_hw *hw, u32 iter_flags, | |
608 | void (*iterator)(void *data, u8 *mac, | |
609 | struct ieee80211_vif *vif), | |
610 | void *data) | |
611 | { | |
612 | struct ieee80211_local *local = hw_to_local(hw); | |
613 | ||
614 | mutex_lock(&local->iflist_mtx); | |
615 | __iterate_active_interfaces(local, iter_flags, iterator, data); | |
c771c9d8 | 616 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
617 | } |
618 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
619 | ||
620 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 621 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
622 | void (*iterator)(void *data, u8 *mac, |
623 | struct ieee80211_vif *vif), | |
624 | void *data) | |
625 | { | |
626 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 627 | |
e38bad47 | 628 | rcu_read_lock(); |
c7c71066 JB |
629 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
630 | rcu_read_unlock(); | |
631 | } | |
632 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 633 | |
c7c71066 JB |
634 | void ieee80211_iterate_active_interfaces_rtnl( |
635 | struct ieee80211_hw *hw, u32 iter_flags, | |
636 | void (*iterator)(void *data, u8 *mac, | |
637 | struct ieee80211_vif *vif), | |
638 | void *data) | |
639 | { | |
640 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 641 | |
c7c71066 | 642 | ASSERT_RTNL(); |
685fb72b | 643 | |
c7c71066 | 644 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
dabeb344 | 645 | } |
c7c71066 | 646 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 647 | |
42935eca LR |
648 | /* |
649 | * Nothing should have been stuffed into the workqueue during | |
650 | * the suspend->resume cycle. If this WARN is seen then there | |
651 | * is a bug with either the driver suspend or something in | |
652 | * mac80211 stuffing into the workqueue which we haven't yet | |
653 | * cleared during mac80211's suspend cycle. | |
654 | */ | |
655 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
656 | { | |
ceb99fe0 JB |
657 | if (WARN(local->suspended && !local->resuming, |
658 | "queueing ieee80211 work while going to suspend\n")) | |
659 | return false; | |
42935eca LR |
660 | |
661 | return true; | |
662 | } | |
663 | ||
664 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
665 | { | |
666 | struct ieee80211_local *local = hw_to_local(hw); | |
667 | ||
668 | if (!ieee80211_can_queue_work(local)) | |
669 | return; | |
670 | ||
671 | queue_work(local->workqueue, work); | |
672 | } | |
673 | EXPORT_SYMBOL(ieee80211_queue_work); | |
674 | ||
675 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
676 | struct delayed_work *dwork, | |
677 | unsigned long delay) | |
678 | { | |
679 | struct ieee80211_local *local = hw_to_local(hw); | |
680 | ||
681 | if (!ieee80211_can_queue_work(local)) | |
682 | return; | |
683 | ||
684 | queue_delayed_work(local->workqueue, dwork, delay); | |
685 | } | |
686 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
687 | ||
35d865af | 688 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
689 | struct ieee802_11_elems *elems, |
690 | u64 filter, u32 crc) | |
691 | { | |
692 | size_t left = len; | |
35d865af | 693 | const u8 *pos = start; |
dd76986b | 694 | bool calc_crc = filter != 0; |
fcff4f10 | 695 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 696 | const u8 *ie; |
dd76986b | 697 | |
fcff4f10 | 698 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
699 | memset(elems, 0, sizeof(*elems)); |
700 | elems->ie_start = start; | |
701 | elems->total_len = len; | |
702 | ||
703 | while (left >= 2) { | |
704 | u8 id, elen; | |
fcff4f10 | 705 | bool elem_parse_failed; |
dd76986b JB |
706 | |
707 | id = *pos++; | |
708 | elen = *pos++; | |
709 | left -= 2; | |
710 | ||
fcff4f10 PS |
711 | if (elen > left) { |
712 | elems->parse_error = true; | |
dd76986b | 713 | break; |
fcff4f10 PS |
714 | } |
715 | ||
9690fb16 JB |
716 | switch (id) { |
717 | case WLAN_EID_SSID: | |
718 | case WLAN_EID_SUPP_RATES: | |
719 | case WLAN_EID_FH_PARAMS: | |
720 | case WLAN_EID_DS_PARAMS: | |
721 | case WLAN_EID_CF_PARAMS: | |
722 | case WLAN_EID_TIM: | |
723 | case WLAN_EID_IBSS_PARAMS: | |
724 | case WLAN_EID_CHALLENGE: | |
725 | case WLAN_EID_RSN: | |
726 | case WLAN_EID_ERP_INFO: | |
727 | case WLAN_EID_EXT_SUPP_RATES: | |
728 | case WLAN_EID_HT_CAPABILITY: | |
729 | case WLAN_EID_HT_OPERATION: | |
730 | case WLAN_EID_VHT_CAPABILITY: | |
731 | case WLAN_EID_VHT_OPERATION: | |
732 | case WLAN_EID_MESH_ID: | |
733 | case WLAN_EID_MESH_CONFIG: | |
734 | case WLAN_EID_PEER_MGMT: | |
735 | case WLAN_EID_PREQ: | |
736 | case WLAN_EID_PREP: | |
737 | case WLAN_EID_PERR: | |
738 | case WLAN_EID_RANN: | |
739 | case WLAN_EID_CHANNEL_SWITCH: | |
740 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
741 | case WLAN_EID_COUNTRY: | |
742 | case WLAN_EID_PWR_CONSTRAINT: | |
743 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 744 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf JB |
745 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
746 | /* | |
747 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
748 | * that if the content gets bigger it might be needed more than once | |
749 | */ | |
9690fb16 JB |
750 | if (test_bit(id, seen_elems)) { |
751 | elems->parse_error = true; | |
752 | left -= elen; | |
753 | pos += elen; | |
754 | continue; | |
755 | } | |
756 | break; | |
fcff4f10 | 757 | } |
dd76986b JB |
758 | |
759 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
760 | crc = crc32_be(crc, pos - 2, elen + 2); | |
761 | ||
fcff4f10 PS |
762 | elem_parse_failed = false; |
763 | ||
dd76986b JB |
764 | switch (id) { |
765 | case WLAN_EID_SSID: | |
766 | elems->ssid = pos; | |
767 | elems->ssid_len = elen; | |
768 | break; | |
769 | case WLAN_EID_SUPP_RATES: | |
770 | elems->supp_rates = pos; | |
771 | elems->supp_rates_len = elen; | |
772 | break; | |
dd76986b | 773 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
774 | if (elen >= 1) |
775 | elems->ds_params = pos; | |
776 | else | |
777 | elem_parse_failed = true; | |
dd76986b | 778 | break; |
dd76986b JB |
779 | case WLAN_EID_TIM: |
780 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
781 | elems->tim = (void *)pos; | |
782 | elems->tim_len = elen; | |
fcff4f10 PS |
783 | } else |
784 | elem_parse_failed = true; | |
dd76986b | 785 | break; |
dd76986b JB |
786 | case WLAN_EID_CHALLENGE: |
787 | elems->challenge = pos; | |
788 | elems->challenge_len = elen; | |
789 | break; | |
790 | case WLAN_EID_VENDOR_SPECIFIC: | |
791 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
792 | pos[2] == 0xf2) { | |
793 | /* Microsoft OUI (00:50:F2) */ | |
794 | ||
795 | if (calc_crc) | |
796 | crc = crc32_be(crc, pos - 2, elen + 2); | |
797 | ||
441a33ba | 798 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
799 | /* OUI Type 2 - WMM IE */ |
800 | if (pos[4] == 0) { | |
801 | elems->wmm_info = pos; | |
802 | elems->wmm_info_len = elen; | |
803 | } else if (pos[4] == 1) { | |
804 | elems->wmm_param = pos; | |
805 | elems->wmm_param_len = elen; | |
806 | } | |
807 | } | |
808 | } | |
809 | break; | |
810 | case WLAN_EID_RSN: | |
811 | elems->rsn = pos; | |
812 | elems->rsn_len = elen; | |
813 | break; | |
814 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
815 | if (elen >= 1) |
816 | elems->erp_info = pos; | |
817 | else | |
818 | elem_parse_failed = true; | |
dd76986b JB |
819 | break; |
820 | case WLAN_EID_EXT_SUPP_RATES: | |
821 | elems->ext_supp_rates = pos; | |
822 | elems->ext_supp_rates_len = elen; | |
823 | break; | |
824 | case WLAN_EID_HT_CAPABILITY: | |
825 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
826 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
827 | else |
828 | elem_parse_failed = true; | |
dd76986b | 829 | break; |
074d46d1 JB |
830 | case WLAN_EID_HT_OPERATION: |
831 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
832 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
833 | else |
834 | elem_parse_failed = true; | |
dd76986b | 835 | break; |
818255ea MP |
836 | case WLAN_EID_VHT_CAPABILITY: |
837 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
838 | elems->vht_cap_elem = (void *)pos; | |
839 | else | |
840 | elem_parse_failed = true; | |
841 | break; | |
842 | case WLAN_EID_VHT_OPERATION: | |
843 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
844 | elems->vht_operation = (void *)pos; | |
845 | else | |
846 | elem_parse_failed = true; | |
847 | break; | |
bee7f586 JB |
848 | case WLAN_EID_OPMODE_NOTIF: |
849 | if (elen > 0) | |
850 | elems->opmode_notif = pos; | |
851 | else | |
852 | elem_parse_failed = true; | |
853 | break; | |
dd76986b JB |
854 | case WLAN_EID_MESH_ID: |
855 | elems->mesh_id = pos; | |
856 | elems->mesh_id_len = elen; | |
857 | break; | |
858 | case WLAN_EID_MESH_CONFIG: | |
859 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
860 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
861 | else |
862 | elem_parse_failed = true; | |
dd76986b JB |
863 | break; |
864 | case WLAN_EID_PEER_MGMT: | |
865 | elems->peering = pos; | |
866 | elems->peering_len = elen; | |
867 | break; | |
3f52b7e3 MP |
868 | case WLAN_EID_MESH_AWAKE_WINDOW: |
869 | if (elen >= 2) | |
870 | elems->awake_window = (void *)pos; | |
871 | break; | |
dd76986b JB |
872 | case WLAN_EID_PREQ: |
873 | elems->preq = pos; | |
874 | elems->preq_len = elen; | |
875 | break; | |
876 | case WLAN_EID_PREP: | |
877 | elems->prep = pos; | |
878 | elems->prep_len = elen; | |
879 | break; | |
880 | case WLAN_EID_PERR: | |
881 | elems->perr = pos; | |
882 | elems->perr_len = elen; | |
883 | break; | |
884 | case WLAN_EID_RANN: | |
885 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
886 | elems->rann = (void *)pos; | |
fcff4f10 PS |
887 | else |
888 | elem_parse_failed = true; | |
dd76986b JB |
889 | break; |
890 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
891 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
892 | elem_parse_failed = true; | |
893 | break; | |
894 | } | |
895 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 896 | break; |
b4f286a1 JB |
897 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
898 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
899 | elem_parse_failed = true; | |
900 | break; | |
901 | } | |
902 | elems->ext_chansw_ie = (void *)pos; | |
903 | break; | |
85220d71 JB |
904 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
905 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
906 | elem_parse_failed = true; | |
907 | break; | |
908 | } | |
909 | elems->sec_chan_offs = (void *)pos; | |
910 | break; | |
b2e506bf JB |
911 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
912 | if (!action || | |
913 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
914 | elem_parse_failed = true; | |
915 | break; | |
916 | } | |
917 | elems->wide_bw_chansw_ie = (void *)pos; | |
918 | break; | |
919 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
920 | if (action) { | |
921 | elem_parse_failed = true; | |
922 | break; | |
923 | } | |
924 | /* | |
925 | * This is a bit tricky, but as we only care about | |
926 | * the wide bandwidth channel switch element, so | |
927 | * just parse it out manually. | |
928 | */ | |
929 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
930 | pos, elen); | |
931 | if (ie) { | |
932 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
933 | elems->wide_bw_chansw_ie = | |
934 | (void *)(ie + 2); | |
935 | else | |
936 | elem_parse_failed = true; | |
937 | } | |
938 | break; | |
dd76986b JB |
939 | case WLAN_EID_COUNTRY: |
940 | elems->country_elem = pos; | |
941 | elems->country_elem_len = elen; | |
942 | break; | |
943 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
944 | if (elen != 1) { |
945 | elem_parse_failed = true; | |
946 | break; | |
947 | } | |
dd76986b | 948 | elems->pwr_constr_elem = pos; |
dd76986b JB |
949 | break; |
950 | case WLAN_EID_TIMEOUT_INTERVAL: | |
79ba1d89 JB |
951 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
952 | elems->timeout_int = (void *)pos; | |
953 | else | |
954 | elem_parse_failed = true; | |
dd76986b JB |
955 | break; |
956 | default: | |
957 | break; | |
958 | } | |
959 | ||
fcff4f10 PS |
960 | if (elem_parse_failed) |
961 | elems->parse_error = true; | |
962 | else | |
5df45690 | 963 | __set_bit(id, seen_elems); |
fcff4f10 | 964 | |
dd76986b JB |
965 | left -= elen; |
966 | pos += elen; | |
967 | } | |
968 | ||
fcff4f10 PS |
969 | if (left != 0) |
970 | elems->parse_error = true; | |
971 | ||
dd76986b JB |
972 | return crc; |
973 | } | |
974 | ||
3abead59 JB |
975 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
976 | bool bss_notify) | |
5825fe10 JB |
977 | { |
978 | struct ieee80211_local *local = sdata->local; | |
979 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 980 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 981 | int ac; |
a8ce8544 | 982 | bool use_11b, enable_qos; |
aa837e1d | 983 | int aCWmin, aCWmax; |
5825fe10 JB |
984 | |
985 | if (!local->ops->conf_tx) | |
986 | return; | |
987 | ||
54bcbc69 JB |
988 | if (local->hw.queues < IEEE80211_NUM_ACS) |
989 | return; | |
990 | ||
5825fe10 JB |
991 | memset(&qparam, 0, sizeof(qparam)); |
992 | ||
55de908a JB |
993 | rcu_read_lock(); |
994 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
995 | use_11b = (chanctx_conf && | |
4bf88530 | 996 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 997 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 998 | rcu_read_unlock(); |
5825fe10 | 999 | |
a8ce8544 SG |
1000 | /* |
1001 | * By default disable QoS in STA mode for old access points, which do | |
1002 | * not support 802.11e. New APs will provide proper queue parameters, | |
1003 | * that we will configure later. | |
1004 | */ | |
1005 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
1006 | ||
1f4ffde8 FZ |
1007 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1008 | aCWmax = 1023; | |
1009 | if (use_11b) | |
1010 | aCWmin = 31; | |
1011 | else | |
1012 | aCWmin = 15; | |
1013 | ||
1014 | /* Confiure old 802.11b/g medium access rules. */ | |
1015 | qparam.cw_max = aCWmax; | |
1016 | qparam.cw_min = aCWmin; | |
1017 | qparam.txop = 0; | |
1018 | qparam.aifs = 2; | |
aa837e1d | 1019 | |
1f4ffde8 FZ |
1020 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1021 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1022 | if (enable_qos) { |
1023 | switch (ac) { | |
1024 | case IEEE80211_AC_BK: | |
1025 | qparam.cw_max = aCWmax; | |
1026 | qparam.cw_min = aCWmin; | |
1027 | qparam.txop = 0; | |
1028 | qparam.aifs = 7; | |
1029 | break; | |
1030 | /* never happens but let's not leave undefined */ | |
1031 | default: | |
1032 | case IEEE80211_AC_BE: | |
1033 | qparam.cw_max = aCWmax; | |
1034 | qparam.cw_min = aCWmin; | |
1035 | qparam.txop = 0; | |
1036 | qparam.aifs = 3; | |
1037 | break; | |
1038 | case IEEE80211_AC_VI: | |
1039 | qparam.cw_max = aCWmin; | |
1040 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
1041 | if (use_11b) | |
1042 | qparam.txop = 6016/32; | |
1043 | else | |
1044 | qparam.txop = 3008/32; | |
1045 | qparam.aifs = 2; | |
1046 | break; | |
1047 | case IEEE80211_AC_VO: | |
1048 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1049 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
1050 | if (use_11b) | |
1051 | qparam.txop = 3264/32; | |
1052 | else | |
1053 | qparam.txop = 1504/32; | |
1054 | qparam.aifs = 2; | |
1055 | break; | |
1056 | } | |
aa837e1d | 1057 | } |
5825fe10 | 1058 | |
ab13315a KV |
1059 | qparam.uapsd = false; |
1060 | ||
54bcbc69 JB |
1061 | sdata->tx_conf[ac] = qparam; |
1062 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1063 | } |
e1b3ec1a | 1064 | |
f142c6b9 JB |
1065 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1066 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1067 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1068 | if (bss_notify) |
1069 | ieee80211_bss_info_change_notify(sdata, | |
1070 | BSS_CHANGED_QOS); | |
d9734979 | 1071 | } |
5825fe10 | 1072 | } |
e50db65c | 1073 | |
46900298 | 1074 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1075 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1076 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1077 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1078 | u32 tx_flags) | |
46900298 JB |
1079 | { |
1080 | struct ieee80211_local *local = sdata->local; | |
1081 | struct sk_buff *skb; | |
1082 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1083 | int err; |
46900298 | 1084 | |
15e230ab FZ |
1085 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
1086 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 6 + extra_len); | |
d15b8459 | 1087 | if (!skb) |
46900298 | 1088 | return; |
d15b8459 | 1089 | |
46900298 JB |
1090 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1091 | ||
1092 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1093 | memset(mgmt, 0, 24 + 6); | |
1094 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1095 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1096 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1097 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1098 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1099 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1100 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1101 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1102 | if (extra) |
1103 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1104 | |
fffd0934 JB |
1105 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1106 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1107 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1108 | WARN_ON(err); | |
1109 | } | |
1110 | ||
1672c0e3 JB |
1111 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1112 | tx_flags; | |
62ae67be | 1113 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1114 | } |
1115 | ||
6ae16775 AQ |
1116 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1117 | const u8 *bssid, u16 stype, u16 reason, | |
1118 | bool send_frame, u8 *frame_buf) | |
1119 | { | |
1120 | struct ieee80211_local *local = sdata->local; | |
1121 | struct sk_buff *skb; | |
1122 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1123 | ||
1124 | /* build frame */ | |
1125 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1126 | mgmt->duration = 0; /* initialize only */ | |
1127 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1128 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1129 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1130 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1131 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1132 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1133 | ||
1134 | if (send_frame) { | |
1135 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1136 | IEEE80211_DEAUTH_FRAME_LEN); | |
1137 | if (!skb) | |
1138 | return; | |
1139 | ||
1140 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1141 | ||
1142 | /* copy in frame */ | |
1143 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1144 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1145 | ||
1146 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1147 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1148 | IEEE80211_SKB_CB(skb)->flags |= | |
1149 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1150 | ||
1151 | ieee80211_tx_skb(sdata, skb); | |
1152 | } | |
1153 | } | |
1154 | ||
de95a54b | 1155 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
c604b9f2 | 1156 | size_t buffer_len, const u8 *ie, size_t ie_len, |
651b5225 | 1157 | enum ieee80211_band band, u32 rate_mask, |
2103dec1 | 1158 | struct cfg80211_chan_def *chandef) |
de95a54b JB |
1159 | { |
1160 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1161 | u8 *pos = buffer, *end = buffer + buffer_len; |
8e664fb3 JB |
1162 | size_t offset = 0, noffset; |
1163 | int supp_rates_len, i; | |
8dcb2003 JM |
1164 | u8 rates[32]; |
1165 | int num_rates; | |
1166 | int ext_rates_len; | |
2103dec1 SW |
1167 | int shift; |
1168 | u32 rate_flags; | |
de95a54b | 1169 | |
4d36ec58 | 1170 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1171 | if (WARN_ON_ONCE(!sband)) |
1172 | return 0; | |
de95a54b | 1173 | |
2103dec1 SW |
1174 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1175 | shift = ieee80211_chandef_get_shift(chandef); | |
1176 | ||
8dcb2003 JM |
1177 | num_rates = 0; |
1178 | for (i = 0; i < sband->n_bitrates; i++) { | |
1179 | if ((BIT(i) & rate_mask) == 0) | |
1180 | continue; /* skip rate */ | |
2103dec1 SW |
1181 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1182 | continue; | |
1183 | ||
1184 | rates[num_rates++] = | |
1185 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1186 | (1 << shift) * 5); | |
8dcb2003 JM |
1187 | } |
1188 | ||
1189 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1190 | |
c604b9f2 JB |
1191 | if (end - pos < 2 + supp_rates_len) |
1192 | goto out_err; | |
de95a54b | 1193 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1194 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1195 | memcpy(pos, rates, supp_rates_len); |
1196 | pos += supp_rates_len; | |
8e664fb3 JB |
1197 | |
1198 | /* insert "request information" if in custom IEs */ | |
1199 | if (ie && ie_len) { | |
1200 | static const u8 before_extrates[] = { | |
1201 | WLAN_EID_SSID, | |
1202 | WLAN_EID_SUPP_RATES, | |
1203 | WLAN_EID_REQUEST, | |
1204 | }; | |
1205 | noffset = ieee80211_ie_split(ie, ie_len, | |
1206 | before_extrates, | |
1207 | ARRAY_SIZE(before_extrates), | |
1208 | offset); | |
c604b9f2 JB |
1209 | if (end - pos < noffset - offset) |
1210 | goto out_err; | |
8e664fb3 JB |
1211 | memcpy(pos, ie + offset, noffset - offset); |
1212 | pos += noffset - offset; | |
1213 | offset = noffset; | |
1214 | } | |
1215 | ||
8dcb2003 JM |
1216 | ext_rates_len = num_rates - supp_rates_len; |
1217 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1218 | if (end - pos < 2 + ext_rates_len) |
1219 | goto out_err; | |
8e664fb3 | 1220 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1221 | *pos++ = ext_rates_len; |
1222 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1223 | pos += ext_rates_len; | |
8e664fb3 JB |
1224 | } |
1225 | ||
2103dec1 | 1226 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1227 | if (end - pos < 3) |
1228 | goto out_err; | |
651b5225 JM |
1229 | *pos++ = WLAN_EID_DS_PARAMS; |
1230 | *pos++ = 1; | |
2103dec1 SW |
1231 | *pos++ = ieee80211_frequency_to_channel( |
1232 | chandef->chan->center_freq); | |
651b5225 JM |
1233 | } |
1234 | ||
8e664fb3 JB |
1235 | /* insert custom IEs that go before HT */ |
1236 | if (ie && ie_len) { | |
1237 | static const u8 before_ht[] = { | |
1238 | WLAN_EID_SSID, | |
1239 | WLAN_EID_SUPP_RATES, | |
1240 | WLAN_EID_REQUEST, | |
1241 | WLAN_EID_EXT_SUPP_RATES, | |
1242 | WLAN_EID_DS_PARAMS, | |
1243 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1244 | }; | |
1245 | noffset = ieee80211_ie_split(ie, ie_len, | |
1246 | before_ht, ARRAY_SIZE(before_ht), | |
1247 | offset); | |
c604b9f2 JB |
1248 | if (end - pos < noffset - offset) |
1249 | goto out_err; | |
8e664fb3 JB |
1250 | memcpy(pos, ie + offset, noffset - offset); |
1251 | pos += noffset - offset; | |
1252 | offset = noffset; | |
de95a54b JB |
1253 | } |
1254 | ||
c604b9f2 JB |
1255 | if (sband->ht_cap.ht_supported) { |
1256 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1257 | goto out_err; | |
ef96a842 BG |
1258 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1259 | sband->ht_cap.cap); | |
c604b9f2 | 1260 | } |
5ef2d41a | 1261 | |
de95a54b JB |
1262 | /* |
1263 | * If adding more here, adjust code in main.c | |
1264 | * that calculates local->scan_ies_len. | |
1265 | */ | |
1266 | ||
8e664fb3 JB |
1267 | /* add any remaining custom IEs */ |
1268 | if (ie && ie_len) { | |
1269 | noffset = ie_len; | |
c604b9f2 JB |
1270 | if (end - pos < noffset - offset) |
1271 | goto out_err; | |
8e664fb3 JB |
1272 | memcpy(pos, ie + offset, noffset - offset); |
1273 | pos += noffset - offset; | |
de95a54b JB |
1274 | } |
1275 | ||
c604b9f2 JB |
1276 | if (sband->vht_cap.vht_supported) { |
1277 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) | |
1278 | goto out_err; | |
ba0afa2f MP |
1279 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1280 | sband->vht_cap.cap); | |
c604b9f2 | 1281 | } |
ba0afa2f | 1282 | |
c604b9f2 JB |
1283 | return pos - buffer; |
1284 | out_err: | |
1285 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1286 | return pos - buffer; |
1287 | } | |
1288 | ||
a619a4c0 | 1289 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
85a237fe | 1290 | u8 *dst, u32 ratemask, |
6b77863b | 1291 | struct ieee80211_channel *chan, |
a619a4c0 | 1292 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1293 | const u8 *ie, size_t ie_len, |
1294 | bool directed) | |
46900298 JB |
1295 | { |
1296 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1297 | struct cfg80211_chan_def chandef; |
46900298 JB |
1298 | struct sk_buff *skb; |
1299 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1300 | int ies_len; |
46900298 | 1301 | |
a806c558 PS |
1302 | /* |
1303 | * Do not send DS Channel parameter for directed probe requests | |
1304 | * in order to maximize the chance that we get a response. Some | |
1305 | * badly-behaved APs don't respond when this parameter is included. | |
1306 | */ | |
2103dec1 | 1307 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1308 | if (directed) |
2103dec1 | 1309 | chandef.chan = NULL; |
a806c558 | 1310 | else |
2103dec1 | 1311 | chandef.chan = chan; |
651b5225 | 1312 | |
7c12ce8b | 1313 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
b9a9ada1 | 1314 | ssid, ssid_len, 100 + ie_len); |
5b2bbf75 | 1315 | if (!skb) |
b9a9ada1 JB |
1316 | return NULL; |
1317 | ||
1318 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), | |
1319 | skb_tailroom(skb), | |
1320 | ie, ie_len, chan->band, | |
2103dec1 | 1321 | ratemask, &chandef); |
b9a9ada1 | 1322 | skb_put(skb, ies_len); |
7c12ce8b | 1323 | |
46900298 | 1324 | if (dst) { |
7c12ce8b | 1325 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1326 | memcpy(mgmt->da, dst, ETH_ALEN); |
1327 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1328 | } |
46900298 | 1329 | |
62ae67be | 1330 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1331 | |
a619a4c0 JO |
1332 | return skb; |
1333 | } | |
1334 | ||
1335 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1336 | const u8 *ssid, size_t ssid_len, | |
a806c558 | 1337 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1338 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1339 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1340 | { |
1341 | struct sk_buff *skb; | |
1342 | ||
fe94fe05 | 1343 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
6b77863b | 1344 | ssid, ssid_len, |
85a237fe | 1345 | ie, ie_len, directed); |
aad14ceb | 1346 | if (skb) { |
1672c0e3 | 1347 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1348 | if (scan) |
1349 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1350 | else | |
1351 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1352 | } |
46900298 JB |
1353 | } |
1354 | ||
2103dec1 | 1355 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1356 | struct ieee802_11_elems *elems, |
9ebb61a2 | 1357 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1358 | { |
1359 | struct ieee80211_supported_band *sband; | |
1360 | struct ieee80211_rate *bitrates; | |
1361 | size_t num_rates; | |
2103dec1 SW |
1362 | u32 supp_rates, rate_flags; |
1363 | int i, j, shift; | |
1364 | sband = sdata->local->hw.wiphy->bands[band]; | |
1365 | ||
1366 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1367 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1368 | |
4ee73f33 MK |
1369 | if (WARN_ON(!sband)) |
1370 | return 1; | |
46900298 JB |
1371 | |
1372 | bitrates = sband->bitrates; | |
1373 | num_rates = sband->n_bitrates; | |
1374 | supp_rates = 0; | |
1375 | for (i = 0; i < elems->supp_rates_len + | |
1376 | elems->ext_supp_rates_len; i++) { | |
1377 | u8 rate = 0; | |
1378 | int own_rate; | |
9ebb61a2 | 1379 | bool is_basic; |
46900298 JB |
1380 | if (i < elems->supp_rates_len) |
1381 | rate = elems->supp_rates[i]; | |
1382 | else if (elems->ext_supp_rates) | |
1383 | rate = elems->ext_supp_rates | |
1384 | [i - elems->supp_rates_len]; | |
1385 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1386 | is_basic = !!(rate & 0x80); |
1387 | ||
1388 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1389 | continue; | |
1390 | ||
1391 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1392 | int brate; |
1393 | if ((rate_flags & sband->bitrates[j].flags) | |
1394 | != rate_flags) | |
1395 | continue; | |
1396 | ||
1397 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1398 | 1 << shift); | |
1399 | ||
1400 | if (brate == own_rate) { | |
46900298 | 1401 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1402 | if (basic_rates && is_basic) |
1403 | *basic_rates |= BIT(j); | |
1404 | } | |
1405 | } | |
46900298 JB |
1406 | } |
1407 | return supp_rates; | |
1408 | } | |
f2753ddb | 1409 | |
84f6a01c JB |
1410 | void ieee80211_stop_device(struct ieee80211_local *local) |
1411 | { | |
1412 | ieee80211_led_radio(local, false); | |
67408c8c | 1413 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1414 | |
1415 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1416 | |
1417 | flush_workqueue(local->workqueue); | |
678f415f | 1418 | drv_stop(local); |
84f6a01c JB |
1419 | } |
1420 | ||
153a5fc4 SG |
1421 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1422 | struct ieee80211_sub_if_data *sdata) | |
1423 | { | |
1424 | struct ieee80211_chanctx_conf *conf; | |
1425 | struct ieee80211_chanctx *ctx; | |
1426 | ||
1427 | if (!local->use_chanctx) | |
1428 | return; | |
1429 | ||
1430 | mutex_lock(&local->chanctx_mtx); | |
1431 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1432 | lockdep_is_held(&local->chanctx_mtx)); | |
1433 | if (conf) { | |
1434 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1435 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1436 | } | |
1437 | mutex_unlock(&local->chanctx_mtx); | |
1438 | } | |
1439 | ||
f2753ddb JB |
1440 | int ieee80211_reconfig(struct ieee80211_local *local) |
1441 | { | |
1442 | struct ieee80211_hw *hw = &local->hw; | |
1443 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1444 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1445 | struct sta_info *sta; |
2683d65b | 1446 | int res, i; |
d888130a JB |
1447 | bool reconfig_due_to_wowlan = false; |
1448 | ||
8f21b0ad | 1449 | #ifdef CONFIG_PM |
ceb99fe0 JB |
1450 | if (local->suspended) |
1451 | local->resuming = true; | |
f2753ddb | 1452 | |
eecc4800 | 1453 | if (local->wowlan) { |
eecc4800 | 1454 | res = drv_resume(local); |
27b3eb9c | 1455 | local->wowlan = false; |
eecc4800 JB |
1456 | if (res < 0) { |
1457 | local->resuming = false; | |
1458 | return res; | |
1459 | } | |
1460 | if (res == 0) | |
1461 | goto wake_up; | |
1462 | WARN_ON(res > 1); | |
1463 | /* | |
1464 | * res is 1, which means the driver requested | |
1465 | * to go through a regular reset on wakeup. | |
1466 | */ | |
d888130a | 1467 | reconfig_due_to_wowlan = true; |
eecc4800 JB |
1468 | } |
1469 | #endif | |
94f9b97b JB |
1470 | /* everything else happens only if HW was up & running */ |
1471 | if (!local->open_count) | |
1472 | goto wake_up; | |
f2753ddb | 1473 | |
94f9b97b JB |
1474 | /* |
1475 | * Upon resume hardware can sometimes be goofy due to | |
1476 | * various platform / driver / bus issues, so restarting | |
1477 | * the device may at times not work immediately. Propagate | |
1478 | * the error. | |
1479 | */ | |
1480 | res = drv_start(local); | |
1481 | if (res) { | |
1482 | WARN(local->suspended, "Hardware became unavailable " | |
1483 | "upon resume. This could be a software issue " | |
1484 | "prior to suspend or a hardware issue.\n"); | |
1485 | return res; | |
f2753ddb JB |
1486 | } |
1487 | ||
7f281975 YAP |
1488 | /* setup fragmentation threshold */ |
1489 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1490 | ||
1491 | /* setup RTS threshold */ | |
1492 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1493 | ||
1494 | /* reset coverage class */ | |
1495 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1496 | ||
94f9b97b JB |
1497 | ieee80211_led_radio(local, true); |
1498 | ieee80211_mod_tpt_led_trig(local, | |
1499 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1500 | ||
f2753ddb | 1501 | /* add interfaces */ |
4b6f1dd6 JB |
1502 | sdata = rtnl_dereference(local->monitor_sdata); |
1503 | if (sdata) { | |
3c3e21e7 JB |
1504 | /* in HW restart it exists already */ |
1505 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1506 | res = drv_add_interface(local, sdata); |
1507 | if (WARN_ON(res)) { | |
1508 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
1509 | synchronize_net(); | |
1510 | kfree(sdata); | |
1511 | } | |
1512 | } | |
1513 | ||
f2753ddb JB |
1514 | list_for_each_entry(sdata, &local->interfaces, list) { |
1515 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1516 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1ed32e4f | 1517 | ieee80211_sdata_running(sdata)) |
7b7eab6f | 1518 | res = drv_add_interface(local, sdata); |
f2753ddb JB |
1519 | } |
1520 | ||
55de908a | 1521 | /* add channel contexts */ |
f0dea9c7 AS |
1522 | if (local->use_chanctx) { |
1523 | mutex_lock(&local->chanctx_mtx); | |
1524 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1525 | WARN_ON(drv_add_chanctx(local, ctx)); | |
1526 | mutex_unlock(&local->chanctx_mtx); | |
1527 | } | |
55de908a | 1528 | |
6352c87f | 1529 | list_for_each_entry(sdata, &local->interfaces, list) { |
6352c87f JB |
1530 | if (!ieee80211_sdata_running(sdata)) |
1531 | continue; | |
153a5fc4 | 1532 | ieee80211_assign_chanctx(local, sdata); |
6352c87f JB |
1533 | } |
1534 | ||
fe5f2559 | 1535 | sdata = rtnl_dereference(local->monitor_sdata); |
153a5fc4 SG |
1536 | if (sdata && ieee80211_sdata_running(sdata)) |
1537 | ieee80211_assign_chanctx(local, sdata); | |
fe5f2559 | 1538 | |
f2753ddb | 1539 | /* add STAs back */ |
34e89507 JB |
1540 | mutex_lock(&local->sta_mtx); |
1541 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1542 | enum ieee80211_sta_state state; |
f09603a2 | 1543 | |
2e8d397e AN |
1544 | if (!sta->uploaded) |
1545 | continue; | |
1546 | ||
1547 | /* AP-mode stations will be added later */ | |
1548 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1549 | continue; | |
1550 | ||
1551 | for (state = IEEE80211_STA_NOTEXIST; | |
1552 | state < sta->sta_state; state++) | |
1553 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1554 | state + 1)); | |
f2753ddb | 1555 | } |
34e89507 | 1556 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1557 | |
2683d65b | 1558 | /* reconfigure tx conf */ |
54bcbc69 JB |
1559 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1560 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1561 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1562 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1563 | !ieee80211_sdata_running(sdata)) | |
1564 | continue; | |
f6f3def3 | 1565 | |
54bcbc69 JB |
1566 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1567 | drv_conf_tx(local, sdata, i, | |
1568 | &sdata->tx_conf[i]); | |
1569 | } | |
f6f3def3 | 1570 | } |
2683d65b | 1571 | |
f2753ddb JB |
1572 | /* reconfigure hardware */ |
1573 | ieee80211_hw_config(local, ~0); | |
1574 | ||
f2753ddb | 1575 | ieee80211_configure_filter(local); |
f2753ddb JB |
1576 | |
1577 | /* Finally also reconfigure all the BSS information */ | |
1578 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1579 | u32 changed; |
1580 | ||
9607e6b6 | 1581 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1582 | continue; |
ac8dd506 JB |
1583 | |
1584 | /* common change flags for all interface types */ | |
1585 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1586 | BSS_CHANGED_ERP_PREAMBLE | | |
1587 | BSS_CHANGED_ERP_SLOT | | |
1588 | BSS_CHANGED_HT | | |
1589 | BSS_CHANGED_BASIC_RATES | | |
1590 | BSS_CHANGED_BEACON_INT | | |
1591 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1592 | BSS_CHANGED_CQM | |
55de47f6 | 1593 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1594 | BSS_CHANGED_IDLE | |
1595 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1596 | |
f2753ddb JB |
1597 | switch (sdata->vif.type) { |
1598 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1599 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1600 | BSS_CHANGED_ARP_FILTER | |
1601 | BSS_CHANGED_PS; | |
c65dd147 | 1602 | |
989c6505 AB |
1603 | /* Re-send beacon info report to the driver */ |
1604 | if (sdata->u.mgd.have_beacon) | |
1605 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1606 | |
8d61ffa5 | 1607 | sdata_lock(sdata); |
ac8dd506 | 1608 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1609 | sdata_unlock(sdata); |
ac8dd506 | 1610 | break; |
f2753ddb | 1611 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1612 | changed |= BSS_CHANGED_IBSS; |
1613 | /* fall through */ | |
f2753ddb | 1614 | case NL80211_IFTYPE_AP: |
339afbf4 | 1615 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1616 | |
1041638f | 1617 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1618 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1619 | ||
1041638f JB |
1620 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1621 | drv_start_ap(local, sdata); | |
1622 | } | |
1623 | ||
7827493b | 1624 | /* fall through */ |
f2753ddb | 1625 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1626 | if (sdata->vif.bss_conf.enable_beacon) { |
1627 | changed |= BSS_CHANGED_BEACON | | |
1628 | BSS_CHANGED_BEACON_ENABLED; | |
1629 | ieee80211_bss_info_change_notify(sdata, changed); | |
1630 | } | |
f2753ddb JB |
1631 | break; |
1632 | case NL80211_IFTYPE_WDS: | |
1633 | break; | |
1634 | case NL80211_IFTYPE_AP_VLAN: | |
1635 | case NL80211_IFTYPE_MONITOR: | |
1636 | /* ignore virtual */ | |
1637 | break; | |
98104fde | 1638 | case NL80211_IFTYPE_P2P_DEVICE: |
f142c6b9 JB |
1639 | changed = BSS_CHANGED_IDLE; |
1640 | break; | |
f2753ddb | 1641 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1642 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1643 | case NL80211_IFTYPE_P2P_CLIENT: |
1644 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1645 | WARN_ON(1); |
1646 | break; | |
1647 | } | |
1648 | } | |
1649 | ||
8e1b23b9 ES |
1650 | ieee80211_recalc_ps(local, -1); |
1651 | ||
6e1b1b24 EP |
1652 | /* |
1653 | * The sta might be in psm against the ap (e.g. because | |
1654 | * this was the state before a hw restart), so we | |
1655 | * explicitly send a null packet in order to make sure | |
1656 | * it'll sync against the ap (and get out of psm). | |
1657 | */ | |
1658 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1659 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1660 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1661 | continue; | |
20f544ee JB |
1662 | if (!sdata->u.mgd.associated) |
1663 | continue; | |
6e1b1b24 EP |
1664 | |
1665 | ieee80211_send_nullfunc(local, sdata, 0); | |
1666 | } | |
1667 | } | |
1668 | ||
2e8d397e AN |
1669 | /* APs are now beaconing, add back stations */ |
1670 | mutex_lock(&local->sta_mtx); | |
1671 | list_for_each_entry(sta, &local->sta_list, list) { | |
1672 | enum ieee80211_sta_state state; | |
1673 | ||
1674 | if (!sta->uploaded) | |
1675 | continue; | |
1676 | ||
1677 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1678 | continue; | |
1679 | ||
1680 | for (state = IEEE80211_STA_NOTEXIST; | |
1681 | state < sta->sta_state; state++) | |
1682 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1683 | state + 1)); | |
1684 | } | |
1685 | mutex_unlock(&local->sta_mtx); | |
1686 | ||
7b21aea0 ES |
1687 | /* add back keys */ |
1688 | list_for_each_entry(sdata, &local->interfaces, list) | |
1689 | if (ieee80211_sdata_running(sdata)) | |
1690 | ieee80211_enable_keys(sdata); | |
1691 | ||
c6209488 | 1692 | wake_up: |
04800ada AN |
1693 | local->in_reconfig = false; |
1694 | barrier(); | |
1695 | ||
3c3e21e7 JB |
1696 | if (local->monitors == local->open_count && local->monitors > 0) |
1697 | ieee80211_add_virtual_monitor(local); | |
1698 | ||
2a419056 JB |
1699 | /* |
1700 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
1701 | * sessions can be established after a resume. | |
1702 | * | |
1703 | * Also tear down aggregation sessions since reconfiguring | |
1704 | * them in a hardware restart scenario is not easily done | |
1705 | * right now, and the hardware will have lost information | |
1706 | * about the sessions, but we and the AP still think they | |
1707 | * are active. This is really a workaround though. | |
1708 | */ | |
74e2bd1f | 1709 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
2a419056 JB |
1710 | mutex_lock(&local->sta_mtx); |
1711 | ||
1712 | list_for_each_entry(sta, &local->sta_list, list) { | |
c82c4a80 JB |
1713 | ieee80211_sta_tear_down_BA_sessions( |
1714 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 1715 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 1716 | } |
2a419056 JB |
1717 | |
1718 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 1719 | } |
74e2bd1f | 1720 | |
445ea4e8 JB |
1721 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
1722 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
f2753ddb | 1723 | |
5bb644a0 JB |
1724 | /* |
1725 | * If this is for hw restart things are still running. | |
1726 | * We may want to change that later, however. | |
1727 | */ | |
8f21b0ad | 1728 | if (!local->suspended || reconfig_due_to_wowlan) |
9214ad7f | 1729 | drv_restart_complete(local); |
8f21b0ad JB |
1730 | |
1731 | if (!local->suspended) | |
5bb644a0 JB |
1732 | return 0; |
1733 | ||
1734 | #ifdef CONFIG_PM | |
ceb99fe0 | 1735 | /* first set suspended false, then resuming */ |
5bb644a0 | 1736 | local->suspended = false; |
ceb99fe0 JB |
1737 | mb(); |
1738 | local->resuming = false; | |
5bb644a0 | 1739 | |
b8360ab8 JB |
1740 | list_for_each_entry(sdata, &local->interfaces, list) { |
1741 | if (!ieee80211_sdata_running(sdata)) | |
1742 | continue; | |
1743 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1744 | ieee80211_sta_restart(sdata); | |
1745 | } | |
1746 | ||
26d59535 | 1747 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
1748 | #else |
1749 | WARN_ON(1); | |
1750 | #endif | |
f2753ddb JB |
1751 | return 0; |
1752 | } | |
42935eca | 1753 | |
95acac61 JB |
1754 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
1755 | { | |
1756 | struct ieee80211_sub_if_data *sdata; | |
1757 | struct ieee80211_local *local; | |
1758 | struct ieee80211_key *key; | |
1759 | ||
1760 | if (WARN_ON(!vif)) | |
1761 | return; | |
1762 | ||
1763 | sdata = vif_to_sdata(vif); | |
1764 | local = sdata->local; | |
1765 | ||
1766 | if (WARN_ON(!local->resuming)) | |
1767 | return; | |
1768 | ||
1769 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
1770 | return; | |
1771 | ||
1772 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
1773 | ||
1774 | mutex_lock(&local->key_mtx); | |
1775 | list_for_each_entry(key, &sdata->key_list, list) | |
1776 | key->flags |= KEY_FLAG_TAINTED; | |
1777 | mutex_unlock(&local->key_mtx); | |
1778 | } | |
1779 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
1780 | ||
04ecd257 | 1781 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 1782 | { |
04ecd257 JB |
1783 | struct ieee80211_local *local = sdata->local; |
1784 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1785 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 1786 | |
04ecd257 | 1787 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 1788 | |
04ecd257 JB |
1789 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1790 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 1791 | |
04ecd257 | 1792 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 1793 | goto unlock; |
0f78231b | 1794 | |
04ecd257 JB |
1795 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
1796 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 1797 | unlock: |
04ecd257 | 1798 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 1799 | } |
8e664fb3 JB |
1800 | |
1801 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) | |
1802 | { | |
1803 | int i; | |
1804 | ||
1805 | for (i = 0; i < n_ids; i++) | |
1806 | if (ids[i] == id) | |
1807 | return true; | |
1808 | return false; | |
1809 | } | |
1810 | ||
1811 | /** | |
1812 | * ieee80211_ie_split - split an IE buffer according to ordering | |
1813 | * | |
1814 | * @ies: the IE buffer | |
1815 | * @ielen: the length of the IE buffer | |
1816 | * @ids: an array with element IDs that are allowed before | |
1817 | * the split | |
1818 | * @n_ids: the size of the element ID array | |
1819 | * @offset: offset where to start splitting in the buffer | |
1820 | * | |
1821 | * This function splits an IE buffer by updating the @offset | |
1822 | * variable to point to the location where the buffer should be | |
1823 | * split. | |
1824 | * | |
1825 | * It assumes that the given IE buffer is well-formed, this | |
1826 | * has to be guaranteed by the caller! | |
1827 | * | |
1828 | * It also assumes that the IEs in the buffer are ordered | |
1829 | * correctly, if not the result of using this function will not | |
1830 | * be ordered correctly either, i.e. it does no reordering. | |
1831 | * | |
1832 | * The function returns the offset where the next part of the | |
1833 | * buffer starts, which may be @ielen if the entire (remainder) | |
1834 | * of the buffer should be used. | |
1835 | */ | |
1836 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1837 | const u8 *ids, int n_ids, size_t offset) | |
1838 | { | |
1839 | size_t pos = offset; | |
1840 | ||
1841 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) | |
1842 | pos += 2 + ies[pos + 1]; | |
1843 | ||
1844 | return pos; | |
1845 | } | |
1846 | ||
1847 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) | |
1848 | { | |
1849 | size_t pos = offset; | |
1850 | ||
1851 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
1852 | pos += 2 + ies[pos + 1]; | |
1853 | ||
1854 | return pos; | |
1855 | } | |
615f7b9b MV |
1856 | |
1857 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
1858 | int rssi_min_thold, | |
1859 | int rssi_max_thold) | |
1860 | { | |
1861 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
1862 | ||
1863 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1864 | return; | |
1865 | ||
1866 | /* | |
1867 | * Scale up threshold values before storing it, as the RSSI averaging | |
1868 | * algorithm uses a scaled up value as well. Change this scaling | |
1869 | * factor if the RSSI averaging algorithm changes. | |
1870 | */ | |
1871 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
1872 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
1873 | } | |
1874 | ||
1875 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
1876 | int rssi_min_thold, | |
1877 | int rssi_max_thold) | |
1878 | { | |
1879 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1880 | ||
1881 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
1882 | rssi_min_thold > rssi_max_thold); | |
1883 | ||
1884 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
1885 | rssi_max_thold); | |
1886 | } | |
1887 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
1888 | ||
1889 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
1890 | { | |
1891 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1892 | ||
1893 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
1894 | } | |
1895 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 1896 | |
ef96a842 | 1897 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
1898 | u16 cap) |
1899 | { | |
1900 | __le16 tmp; | |
1901 | ||
1902 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
1903 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
1904 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
1905 | ||
1906 | /* capability flags */ | |
1907 | tmp = cpu_to_le16(cap); | |
1908 | memcpy(pos, &tmp, sizeof(u16)); | |
1909 | pos += sizeof(u16); | |
1910 | ||
1911 | /* AMPDU parameters */ | |
ef96a842 BG |
1912 | *pos++ = ht_cap->ampdu_factor | |
1913 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
1914 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
1915 | ||
1916 | /* MCS set */ | |
ef96a842 BG |
1917 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
1918 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
1919 | |
1920 | /* extended capabilities */ | |
1921 | pos += sizeof(__le16); | |
1922 | ||
1923 | /* BF capabilities */ | |
1924 | pos += sizeof(__le32); | |
1925 | ||
1926 | /* antenna selection */ | |
1927 | pos += sizeof(u8); | |
1928 | ||
1929 | return pos; | |
1930 | } | |
1931 | ||
ba0afa2f | 1932 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 1933 | u32 cap) |
ba0afa2f MP |
1934 | { |
1935 | __le32 tmp; | |
1936 | ||
1937 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
1938 | *pos++ = sizeof(struct ieee80211_vht_cap); |
1939 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
1940 | |
1941 | /* capability flags */ | |
1942 | tmp = cpu_to_le32(cap); | |
1943 | memcpy(pos, &tmp, sizeof(u32)); | |
1944 | pos += sizeof(u32); | |
1945 | ||
1946 | /* VHT MCS set */ | |
1947 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
1948 | pos += sizeof(vht_cap->vht_mcs); | |
1949 | ||
1950 | return pos; | |
1951 | } | |
1952 | ||
074d46d1 | 1953 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 1954 | const struct cfg80211_chan_def *chandef, |
431e3154 | 1955 | u16 prot_mode) |
42e7aa77 | 1956 | { |
074d46d1 | 1957 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 1958 | /* Build HT Information */ |
074d46d1 JB |
1959 | *pos++ = WLAN_EID_HT_OPERATION; |
1960 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
1961 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
1962 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
1963 | chandef->chan->center_freq); | |
1964 | switch (chandef->width) { | |
1965 | case NL80211_CHAN_WIDTH_160: | |
1966 | case NL80211_CHAN_WIDTH_80P80: | |
1967 | case NL80211_CHAN_WIDTH_80: | |
1968 | case NL80211_CHAN_WIDTH_40: | |
1969 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
1970 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
1971 | else | |
1972 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 1973 | break; |
42e7aa77 | 1974 | default: |
074d46d1 | 1975 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
1976 | break; |
1977 | } | |
aee286c2 | 1978 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
1979 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
1980 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 1981 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 1982 | |
431e3154 | 1983 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 1984 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
1985 | |
1986 | /* It seems that Basic MCS set and Supported MCS set | |
1987 | are identical for the first 10 bytes */ | |
074d46d1 JB |
1988 | memset(&ht_oper->basic_set, 0, 16); |
1989 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 1990 | |
074d46d1 | 1991 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
1992 | } |
1993 | ||
4bf88530 | 1994 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 1995 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 1996 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
1997 | { |
1998 | enum nl80211_channel_type channel_type; | |
1999 | ||
4bf88530 JB |
2000 | if (!ht_oper) { |
2001 | cfg80211_chandef_create(chandef, control_chan, | |
2002 | NL80211_CHAN_NO_HT); | |
2003 | return; | |
2004 | } | |
42e7aa77 | 2005 | |
074d46d1 | 2006 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2007 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2008 | channel_type = NL80211_CHAN_HT20; | |
2009 | break; | |
2010 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2011 | channel_type = NL80211_CHAN_HT40PLUS; | |
2012 | break; | |
2013 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2014 | channel_type = NL80211_CHAN_HT40MINUS; | |
2015 | break; | |
2016 | default: | |
2017 | channel_type = NL80211_CHAN_NO_HT; | |
2018 | } | |
2019 | ||
4bf88530 | 2020 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
2021 | } |
2022 | ||
2103dec1 SW |
2023 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2024 | const struct ieee80211_supported_band *sband, | |
2025 | const u8 *srates, int srates_len, u32 *rates) | |
2026 | { | |
2027 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2028 | int shift = ieee80211_chandef_get_shift(chandef); | |
2029 | struct ieee80211_rate *br; | |
2030 | int brate, rate, i, j, count = 0; | |
2031 | ||
2032 | *rates = 0; | |
2033 | ||
2034 | for (i = 0; i < srates_len; i++) { | |
2035 | rate = srates[i] & 0x7f; | |
2036 | ||
2037 | for (j = 0; j < sband->n_bitrates; j++) { | |
2038 | br = &sband->bitrates[j]; | |
2039 | if ((rate_flags & br->flags) != rate_flags) | |
2040 | continue; | |
2041 | ||
2042 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2043 | if (brate == rate) { | |
2044 | *rates |= BIT(j); | |
2045 | count++; | |
2046 | break; | |
2047 | } | |
2048 | } | |
2049 | } | |
2050 | return count; | |
2051 | } | |
2052 | ||
fc8a7321 | 2053 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2054 | struct sk_buff *skb, bool need_basic, |
2055 | enum ieee80211_band band) | |
768db343 | 2056 | { |
768db343 AN |
2057 | struct ieee80211_local *local = sdata->local; |
2058 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2059 | int rate, shift; |
768db343 | 2060 | u8 i, rates, *pos; |
fc8a7321 | 2061 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2062 | u32 rate_flags; |
768db343 | 2063 | |
2103dec1 SW |
2064 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2065 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2066 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2067 | rates = 0; |
2068 | for (i = 0; i < sband->n_bitrates; i++) { | |
2069 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2070 | continue; | |
2071 | rates++; | |
2072 | } | |
768db343 AN |
2073 | if (rates > 8) |
2074 | rates = 8; | |
2075 | ||
2076 | if (skb_tailroom(skb) < rates + 2) | |
2077 | return -ENOMEM; | |
2078 | ||
2079 | pos = skb_put(skb, rates + 2); | |
2080 | *pos++ = WLAN_EID_SUPP_RATES; | |
2081 | *pos++ = rates; | |
2082 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2083 | u8 basic = 0; |
2103dec1 SW |
2084 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2085 | continue; | |
2086 | ||
657c3e0c AN |
2087 | if (need_basic && basic_rates & BIT(i)) |
2088 | basic = 0x80; | |
768db343 | 2089 | rate = sband->bitrates[i].bitrate; |
2103dec1 SW |
2090 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2091 | 5 * (1 << shift)); | |
2092 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2093 | } |
2094 | ||
2095 | return 0; | |
2096 | } | |
2097 | ||
fc8a7321 | 2098 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2099 | struct sk_buff *skb, bool need_basic, |
2100 | enum ieee80211_band band) | |
768db343 | 2101 | { |
768db343 AN |
2102 | struct ieee80211_local *local = sdata->local; |
2103 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2104 | int rate, skip, shift; |
768db343 | 2105 | u8 i, exrates, *pos; |
fc8a7321 | 2106 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2107 | u32 rate_flags; |
2108 | ||
2109 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2110 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2111 | |
6b77863b | 2112 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2113 | exrates = 0; |
2114 | for (i = 0; i < sband->n_bitrates; i++) { | |
2115 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2116 | continue; | |
2117 | exrates++; | |
2118 | } | |
2119 | ||
768db343 AN |
2120 | if (exrates > 8) |
2121 | exrates -= 8; | |
2122 | else | |
2123 | exrates = 0; | |
2124 | ||
2125 | if (skb_tailroom(skb) < exrates + 2) | |
2126 | return -ENOMEM; | |
2127 | ||
2128 | if (exrates) { | |
2129 | pos = skb_put(skb, exrates + 2); | |
2130 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2131 | *pos++ = exrates; | |
2103dec1 | 2132 | skip = 0; |
768db343 | 2133 | for (i = 8; i < sband->n_bitrates; i++) { |
657c3e0c | 2134 | u8 basic = 0; |
2103dec1 SW |
2135 | if ((rate_flags & sband->bitrates[i].flags) |
2136 | != rate_flags) | |
2137 | continue; | |
2138 | if (skip++ < 8) | |
2139 | continue; | |
657c3e0c AN |
2140 | if (need_basic && basic_rates & BIT(i)) |
2141 | basic = 0x80; | |
2103dec1 SW |
2142 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2143 | 5 * (1 << shift)); | |
2144 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2145 | } |
2146 | } | |
2147 | return 0; | |
2148 | } | |
1dae27f8 WYG |
2149 | |
2150 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2151 | { | |
2152 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2153 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2154 | ||
be6bcabc WYG |
2155 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2156 | /* non-managed type inferfaces */ | |
2157 | return 0; | |
2158 | } | |
3a7bba64 | 2159 | return ifmgd->ave_beacon_signal / 16; |
1dae27f8 | 2160 | } |
0d8a0a17 | 2161 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2162 | |
2163 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2164 | { | |
2165 | if (!mcs) | |
2166 | return 1; | |
2167 | ||
2168 | /* TODO: consider rx_highest */ | |
2169 | ||
2170 | if (mcs->rx_mask[3]) | |
2171 | return 4; | |
2172 | if (mcs->rx_mask[2]) | |
2173 | return 3; | |
2174 | if (mcs->rx_mask[1]) | |
2175 | return 2; | |
2176 | return 1; | |
2177 | } | |
f4bda337 TP |
2178 | |
2179 | /** | |
2180 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2181 | * @local: mac80211 hw info struct | |
2182 | * @status: RX status | |
2183 | * @mpdu_len: total MPDU length (including FCS) | |
2184 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2185 | * | |
2186 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2187 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2188 | * the timestamp to TSF at beginning of MPDU reception. | |
2189 | */ | |
2190 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2191 | struct ieee80211_rx_status *status, | |
2192 | unsigned int mpdu_len, | |
2193 | unsigned int mpdu_offset) | |
2194 | { | |
2195 | u64 ts = status->mactime; | |
2196 | struct rate_info ri; | |
2197 | u16 rate; | |
2198 | ||
2199 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2200 | return 0; | |
2201 | ||
2202 | memset(&ri, 0, sizeof(ri)); | |
2203 | ||
2204 | /* Fill cfg80211 rate info */ | |
2205 | if (status->flag & RX_FLAG_HT) { | |
2206 | ri.mcs = status->rate_idx; | |
2207 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2208 | if (status->flag & RX_FLAG_40MHZ) | |
2209 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2210 | if (status->flag & RX_FLAG_SHORT_GI) | |
2211 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2212 | } else if (status->flag & RX_FLAG_VHT) { |
2213 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2214 | ri.mcs = status->rate_idx; | |
2215 | ri.nss = status->vht_nss; | |
2216 | if (status->flag & RX_FLAG_40MHZ) | |
2217 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2218 | if (status->flag & RX_FLAG_80MHZ) | |
2219 | ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; | |
2220 | if (status->flag & RX_FLAG_80P80MHZ) | |
2221 | ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; | |
2222 | if (status->flag & RX_FLAG_160MHZ) | |
2223 | ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; | |
2224 | if (status->flag & RX_FLAG_SHORT_GI) | |
2225 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2226 | } else { |
2227 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2228 | int shift = 0; |
2229 | int bitrate; | |
2230 | ||
2231 | if (status->flag & RX_FLAG_10MHZ) | |
2232 | shift = 1; | |
2233 | if (status->flag & RX_FLAG_5MHZ) | |
2234 | shift = 2; | |
f4bda337 TP |
2235 | |
2236 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2237 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2238 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4bda337 TP |
2239 | } |
2240 | ||
2241 | rate = cfg80211_calculate_bitrate(&ri); | |
2242 | ||
2243 | /* rewind from end of MPDU */ | |
2244 | if (status->flag & RX_FLAG_MACTIME_END) | |
2245 | ts -= mpdu_len * 8 * 10 / rate; | |
2246 | ||
2247 | ts += mpdu_offset * 8 * 10 / rate; | |
2248 | ||
2249 | return ts; | |
2250 | } | |
164eb02d SW |
2251 | |
2252 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2253 | { | |
2254 | struct ieee80211_sub_if_data *sdata; | |
2255 | ||
2256 | mutex_lock(&local->iflist_mtx); | |
2257 | list_for_each_entry(sdata, &local->interfaces, list) { | |
2258 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); | |
2259 | ||
2260 | if (sdata->wdev.cac_started) { | |
2261 | ieee80211_vif_release_channel(sdata); | |
2262 | cfg80211_cac_event(sdata->dev, | |
2263 | NL80211_RADAR_CAC_ABORTED, | |
2264 | GFP_KERNEL); | |
2265 | } | |
2266 | } | |
2267 | mutex_unlock(&local->iflist_mtx); | |
2268 | } | |
2269 | ||
2270 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2271 | { | |
2272 | struct ieee80211_local *local = | |
2273 | container_of(work, struct ieee80211_local, radar_detected_work); | |
2274 | struct cfg80211_chan_def chandef; | |
2275 | ||
2276 | ieee80211_dfs_cac_cancel(local); | |
2277 | ||
2278 | if (local->use_chanctx) | |
2279 | /* currently not handled */ | |
2280 | WARN_ON(1); | |
2281 | else { | |
675a0b04 | 2282 | chandef = local->hw.conf.chandef; |
164eb02d SW |
2283 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
2284 | } | |
2285 | } | |
2286 | ||
2287 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2288 | { | |
2289 | struct ieee80211_local *local = hw_to_local(hw); | |
2290 | ||
2291 | trace_api_radar_detected(local); | |
2292 | ||
2293 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2294 | } | |
2295 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2296 | |
2297 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2298 | { | |
2299 | u32 ret; | |
2300 | int tmp; | |
2301 | ||
2302 | switch (c->width) { | |
2303 | case NL80211_CHAN_WIDTH_20: | |
2304 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2305 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2306 | break; | |
2307 | case NL80211_CHAN_WIDTH_40: | |
2308 | c->width = NL80211_CHAN_WIDTH_20; | |
2309 | c->center_freq1 = c->chan->center_freq; | |
2310 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2311 | IEEE80211_STA_DISABLE_VHT; | |
2312 | break; | |
2313 | case NL80211_CHAN_WIDTH_80: | |
2314 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2315 | /* n_P40 */ | |
2316 | tmp /= 2; | |
2317 | /* freq_P40 */ | |
2318 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2319 | c->width = NL80211_CHAN_WIDTH_40; | |
2320 | ret = IEEE80211_STA_DISABLE_VHT; | |
2321 | break; | |
2322 | case NL80211_CHAN_WIDTH_80P80: | |
2323 | c->center_freq2 = 0; | |
2324 | c->width = NL80211_CHAN_WIDTH_80; | |
2325 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2326 | IEEE80211_STA_DISABLE_160MHZ; | |
2327 | break; | |
2328 | case NL80211_CHAN_WIDTH_160: | |
2329 | /* n_P20 */ | |
2330 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2331 | /* n_P80 */ | |
2332 | tmp /= 4; | |
2333 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2334 | c->width = NL80211_CHAN_WIDTH_80; | |
2335 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2336 | IEEE80211_STA_DISABLE_160MHZ; | |
2337 | break; | |
2338 | default: | |
2339 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2340 | WARN_ON_ONCE(1); | |
2341 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2342 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2343 | break; | |
2344 | case NL80211_CHAN_WIDTH_5: | |
2345 | case NL80211_CHAN_WIDTH_10: | |
2346 | WARN_ON_ONCE(1); | |
2347 | /* keep c->width */ | |
2348 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2349 | break; | |
2350 | } | |
2351 | ||
2352 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2353 | ||
2354 | return ret; | |
2355 | } |