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 */ | |
c2d1560a JB |
144 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, |
145 | 4 * rate); /* T_SYM x N_SYM */ | |
438b61b7 SW |
146 | |
147 | /* IEEE 802.11-2012 18.3.2.4: all values above are: | |
148 | * * times 4 for 5 MHz | |
149 | * * times 2 for 10 MHz | |
150 | */ | |
151 | dur *= 1 << shift; | |
c2d1560a JB |
152 | } else { |
153 | /* | |
154 | * 802.11b or 802.11g with 802.11b compatibility: | |
155 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
156 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
157 | * | |
158 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
159 | * aSIFSTime = 10 usec | |
160 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
161 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
162 | */ | |
163 | dur = 10; /* aSIFSTime = 10 usec */ | |
164 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
165 | ||
166 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
167 | } | |
168 | ||
169 | return dur; | |
170 | } | |
171 | ||
172 | /* Exported duration function for driver use */ | |
32bfd35d JB |
173 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
174 | struct ieee80211_vif *vif, | |
4ee73f33 | 175 | enum ieee80211_band band, |
8318d78a JB |
176 | size_t frame_len, |
177 | struct ieee80211_rate *rate) | |
c2d1560a | 178 | { |
25d834e1 | 179 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 180 | u16 dur; |
438b61b7 | 181 | int erp, shift = 0; |
25d834e1 | 182 | bool short_preamble = false; |
c2d1560a | 183 | |
8318d78a | 184 | erp = 0; |
25d834e1 JB |
185 | if (vif) { |
186 | sdata = vif_to_sdata(vif); | |
bda3933a | 187 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
188 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
189 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 190 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 191 | } |
8318d78a | 192 | |
4ee73f33 | 193 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
438b61b7 | 194 | short_preamble, shift); |
c2d1560a JB |
195 | |
196 | return cpu_to_le16(dur); | |
197 | } | |
198 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
199 | ||
32bfd35d JB |
200 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
201 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 202 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
203 | { |
204 | struct ieee80211_local *local = hw_to_local(hw); | |
205 | struct ieee80211_rate *rate; | |
25d834e1 | 206 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 207 | bool short_preamble; |
438b61b7 | 208 | int erp, shift = 0; |
c2d1560a | 209 | u16 dur; |
2e92e6f2 JB |
210 | struct ieee80211_supported_band *sband; |
211 | ||
4ee73f33 | 212 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 213 | |
25d834e1 | 214 | short_preamble = false; |
7e9ed188 | 215 | |
e039fa4a | 216 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
217 | |
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 JB |
226 | |
227 | /* CTS duration */ | |
4ee73f33 | 228 | dur = ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
438b61b7 | 229 | erp, short_preamble, shift); |
c2d1560a | 230 | /* Data frame duration */ |
4ee73f33 | 231 | dur += ieee80211_frame_duration(sband->band, frame_len, rate->bitrate, |
438b61b7 | 232 | erp, short_preamble, shift); |
c2d1560a | 233 | /* ACK duration */ |
4ee73f33 | 234 | dur += ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
438b61b7 | 235 | erp, short_preamble, shift); |
c2d1560a JB |
236 | |
237 | return cpu_to_le16(dur); | |
238 | } | |
239 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
240 | ||
32bfd35d JB |
241 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
242 | struct ieee80211_vif *vif, | |
c2d1560a | 243 | size_t frame_len, |
e039fa4a | 244 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
245 | { |
246 | struct ieee80211_local *local = hw_to_local(hw); | |
247 | struct ieee80211_rate *rate; | |
25d834e1 | 248 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 249 | bool short_preamble; |
438b61b7 | 250 | int erp, shift = 0; |
c2d1560a | 251 | u16 dur; |
2e92e6f2 JB |
252 | struct ieee80211_supported_band *sband; |
253 | ||
4ee73f33 | 254 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 255 | |
25d834e1 | 256 | short_preamble = false; |
7e9ed188 | 257 | |
e039fa4a | 258 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 259 | erp = 0; |
25d834e1 JB |
260 | if (vif) { |
261 | sdata = vif_to_sdata(vif); | |
bda3933a | 262 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
263 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
264 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 265 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 266 | } |
c2d1560a JB |
267 | |
268 | /* Data frame duration */ | |
4ee73f33 | 269 | dur = ieee80211_frame_duration(sband->band, frame_len, rate->bitrate, |
438b61b7 | 270 | erp, short_preamble, shift); |
e039fa4a | 271 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 272 | /* ACK duration */ |
4ee73f33 | 273 | dur += ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
438b61b7 | 274 | erp, short_preamble, shift); |
c2d1560a JB |
275 | } |
276 | ||
277 | return cpu_to_le16(dur); | |
278 | } | |
279 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
280 | ||
3a25a8c8 JB |
281 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
282 | { | |
283 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
284 | int n_acs = IEEE80211_NUM_ACS; |
285 | ||
286 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
287 | n_acs = 1; | |
3a25a8c8 JB |
288 | |
289 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
290 | int ac; | |
291 | ||
f142c6b9 JB |
292 | if (!sdata->dev) |
293 | continue; | |
294 | ||
3a25a8c8 JB |
295 | if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) |
296 | continue; | |
297 | ||
298 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && | |
299 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
300 | continue; | |
301 | ||
a6f38ac3 | 302 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
303 | int ac_queue = sdata->vif.hw_queue[ac]; |
304 | ||
305 | if (ac_queue == queue || | |
306 | (sdata->vif.cab_queue == queue && | |
307 | local->queue_stop_reasons[ac_queue] == 0 && | |
308 | skb_queue_empty(&local->pending[ac_queue]))) | |
309 | netif_wake_subqueue(sdata->dev, ac); | |
310 | } | |
311 | } | |
312 | } | |
313 | ||
ce7c9111 KV |
314 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
315 | enum queue_stop_reason reason) | |
c2d1560a JB |
316 | { |
317 | struct ieee80211_local *local = hw_to_local(hw); | |
318 | ||
b5878a2d JB |
319 | trace_wake_queue(local, queue, reason); |
320 | ||
e4e72fb4 JB |
321 | if (WARN_ON(queue >= hw->queues)) |
322 | return; | |
ce7c9111 | 323 | |
ada15125 JB |
324 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
325 | return; | |
326 | ||
96f5e66e JB |
327 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
328 | ||
329 | if (local->queue_stop_reasons[queue] != 0) | |
330 | /* someone still has this queue stopped */ | |
331 | return; | |
332 | ||
7236fe29 JB |
333 | if (skb_queue_empty(&local->pending[queue])) { |
334 | rcu_read_lock(); | |
3a25a8c8 | 335 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
336 | rcu_read_unlock(); |
337 | } else | |
3b8d81e0 | 338 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 339 | } |
ce7c9111 | 340 | |
96f5e66e JB |
341 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
342 | enum queue_stop_reason reason) | |
ce7c9111 KV |
343 | { |
344 | struct ieee80211_local *local = hw_to_local(hw); | |
345 | unsigned long flags; | |
346 | ||
347 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
348 | __ieee80211_wake_queue(hw, queue, reason); | |
349 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
350 | } | |
351 | ||
352 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
353 | { | |
354 | ieee80211_wake_queue_by_reason(hw, queue, | |
355 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
356 | } | |
c2d1560a JB |
357 | EXPORT_SYMBOL(ieee80211_wake_queue); |
358 | ||
ce7c9111 KV |
359 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
360 | enum queue_stop_reason reason) | |
c2d1560a JB |
361 | { |
362 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 363 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 364 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 365 | |
b5878a2d JB |
366 | trace_stop_queue(local, queue, reason); |
367 | ||
e4e72fb4 JB |
368 | if (WARN_ON(queue >= hw->queues)) |
369 | return; | |
96f5e66e | 370 | |
ada15125 JB |
371 | if (test_bit(reason, &local->queue_stop_reasons[queue])) |
372 | return; | |
373 | ||
2a577d98 | 374 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
cf0277e7 | 375 | |
a6f38ac3 JB |
376 | if (local->hw.queues < IEEE80211_NUM_ACS) |
377 | n_acs = 1; | |
378 | ||
cf0277e7 | 379 | rcu_read_lock(); |
3a25a8c8 JB |
380 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
381 | int ac; | |
382 | ||
f142c6b9 JB |
383 | if (!sdata->dev) |
384 | continue; | |
385 | ||
a6f38ac3 | 386 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
387 | if (sdata->vif.hw_queue[ac] == queue || |
388 | sdata->vif.cab_queue == queue) | |
389 | netif_stop_subqueue(sdata->dev, ac); | |
390 | } | |
391 | } | |
cf0277e7 | 392 | rcu_read_unlock(); |
c2d1560a | 393 | } |
ce7c9111 | 394 | |
96f5e66e JB |
395 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
396 | enum queue_stop_reason reason) | |
ce7c9111 KV |
397 | { |
398 | struct ieee80211_local *local = hw_to_local(hw); | |
399 | unsigned long flags; | |
400 | ||
401 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
402 | __ieee80211_stop_queue(hw, queue, reason); | |
403 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
404 | } | |
405 | ||
406 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
407 | { | |
408 | ieee80211_stop_queue_by_reason(hw, queue, | |
409 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
410 | } | |
c2d1560a JB |
411 | EXPORT_SYMBOL(ieee80211_stop_queue); |
412 | ||
8f77f384 JB |
413 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
414 | struct sk_buff *skb) | |
415 | { | |
416 | struct ieee80211_hw *hw = &local->hw; | |
417 | unsigned long flags; | |
a7bc376c | 418 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 419 | int queue = info->hw_queue; |
a7bc376c JB |
420 | |
421 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 422 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
423 | return; |
424 | } | |
8f77f384 JB |
425 | |
426 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
427 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
3b8d81e0 | 428 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
429 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
430 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
431 | } | |
432 | ||
b0b97a8a JB |
433 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
434 | struct sk_buff_head *skbs, | |
435 | void (*fn)(void *data), void *data) | |
8f77f384 JB |
436 | { |
437 | struct ieee80211_hw *hw = &local->hw; | |
438 | struct sk_buff *skb; | |
439 | unsigned long flags; | |
b0b97a8a | 440 | int queue, i; |
8f77f384 JB |
441 | |
442 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 443 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
444 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
445 | ||
446 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 447 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
448 | continue; |
449 | } | |
450 | ||
3a25a8c8 | 451 | queue = info->hw_queue; |
4644ae89 JB |
452 | |
453 | __ieee80211_stop_queue(hw, queue, | |
454 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
455 | ||
3b8d81e0 | 456 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
457 | } |
458 | ||
50a9432d JB |
459 | if (fn) |
460 | fn(data); | |
461 | ||
3b8d81e0 | 462 | for (i = 0; i < hw->queues; i++) |
8f77f384 JB |
463 | __ieee80211_wake_queue(hw, i, |
464 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
8f77f384 | 465 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
466 | } |
467 | ||
ce7c9111 | 468 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 JB |
469 | unsigned long queues, |
470 | enum queue_stop_reason reason) | |
c2d1560a | 471 | { |
ce7c9111 KV |
472 | struct ieee80211_local *local = hw_to_local(hw); |
473 | unsigned long flags; | |
c2d1560a JB |
474 | int i; |
475 | ||
ce7c9111 KV |
476 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
477 | ||
445ea4e8 | 478 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
479 | __ieee80211_stop_queue(hw, i, reason); |
480 | ||
481 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
482 | } | |
483 | ||
484 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
485 | { | |
445ea4e8 | 486 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
ce7c9111 | 487 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
c2d1560a JB |
488 | } |
489 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
490 | ||
92ab8535 TW |
491 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
492 | { | |
493 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
494 | unsigned long flags; |
495 | int ret; | |
96f5e66e | 496 | |
e4e72fb4 JB |
497 | if (WARN_ON(queue >= hw->queues)) |
498 | return true; | |
96f5e66e | 499 | |
3b8d81e0 | 500 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
501 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
502 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
503 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
504 | return ret; | |
92ab8535 TW |
505 | } |
506 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
507 | ||
ce7c9111 | 508 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 509 | unsigned long queues, |
ce7c9111 | 510 | enum queue_stop_reason reason) |
c2d1560a | 511 | { |
ce7c9111 KV |
512 | struct ieee80211_local *local = hw_to_local(hw); |
513 | unsigned long flags; | |
c2d1560a JB |
514 | int i; |
515 | ||
ce7c9111 KV |
516 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
517 | ||
445ea4e8 | 518 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
519 | __ieee80211_wake_queue(hw, i, reason); |
520 | ||
521 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
522 | } | |
523 | ||
524 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
525 | { | |
445ea4e8 JB |
526 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
527 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
528 | } |
529 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 530 | |
39ecc01d JB |
531 | void ieee80211_flush_queues(struct ieee80211_local *local, |
532 | struct ieee80211_sub_if_data *sdata) | |
533 | { | |
534 | u32 queues; | |
535 | ||
536 | if (!local->ops->flush) | |
537 | return; | |
538 | ||
539 | if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { | |
540 | int ac; | |
541 | ||
542 | queues = 0; | |
543 | ||
544 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
545 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
546 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
547 | queues |= BIT(sdata->vif.cab_queue); | |
548 | } else { | |
549 | /* all queues */ | |
550 | queues = BIT(local->hw.queues) - 1; | |
551 | } | |
552 | ||
445ea4e8 JB |
553 | ieee80211_stop_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, |
554 | IEEE80211_QUEUE_STOP_REASON_FLUSH); | |
555 | ||
39ecc01d | 556 | drv_flush(local, queues, false); |
445ea4e8 JB |
557 | |
558 | ieee80211_wake_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, | |
559 | IEEE80211_QUEUE_STOP_REASON_FLUSH); | |
39ecc01d JB |
560 | } |
561 | ||
32bfd35d | 562 | void ieee80211_iterate_active_interfaces( |
8b2c9824 | 563 | struct ieee80211_hw *hw, u32 iter_flags, |
32bfd35d JB |
564 | void (*iterator)(void *data, u8 *mac, |
565 | struct ieee80211_vif *vif), | |
566 | void *data) | |
dabeb344 JB |
567 | { |
568 | struct ieee80211_local *local = hw_to_local(hw); | |
569 | struct ieee80211_sub_if_data *sdata; | |
570 | ||
c771c9d8 | 571 | mutex_lock(&local->iflist_mtx); |
2f561feb ID |
572 | |
573 | list_for_each_entry(sdata, &local->interfaces, list) { | |
574 | switch (sdata->vif.type) { | |
05c914fe | 575 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
576 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
577 | continue; | |
578 | break; | |
05c914fe | 579 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 580 | continue; |
2ca27bcf | 581 | default: |
2f561feb ID |
582 | break; |
583 | } | |
8b2c9824 JB |
584 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
585 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
586 | continue; | |
9607e6b6 | 587 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 588 | iterator(data, sdata->vif.addr, |
2f561feb ID |
589 | &sdata->vif); |
590 | } | |
591 | ||
685fb72b JB |
592 | sdata = rcu_dereference_protected(local->monitor_sdata, |
593 | lockdep_is_held(&local->iflist_mtx)); | |
8b2c9824 JB |
594 | if (sdata && |
595 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
596 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b JB |
597 | iterator(data, sdata->vif.addr, &sdata->vif); |
598 | ||
c771c9d8 | 599 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
600 | } |
601 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
602 | ||
603 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 604 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
605 | void (*iterator)(void *data, u8 *mac, |
606 | struct ieee80211_vif *vif), | |
607 | void *data) | |
608 | { | |
609 | struct ieee80211_local *local = hw_to_local(hw); | |
610 | struct ieee80211_sub_if_data *sdata; | |
611 | ||
e38bad47 | 612 | rcu_read_lock(); |
dabeb344 | 613 | |
e38bad47 | 614 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 615 | switch (sdata->vif.type) { |
05c914fe | 616 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
617 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
618 | continue; | |
619 | break; | |
05c914fe | 620 | case NL80211_IFTYPE_AP_VLAN: |
dabeb344 | 621 | continue; |
2ca27bcf | 622 | default: |
dabeb344 JB |
623 | break; |
624 | } | |
8b2c9824 JB |
625 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
626 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
627 | continue; | |
9607e6b6 | 628 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 629 | iterator(data, sdata->vif.addr, |
32bfd35d | 630 | &sdata->vif); |
dabeb344 | 631 | } |
e38bad47 | 632 | |
685fb72b | 633 | sdata = rcu_dereference(local->monitor_sdata); |
8b2c9824 JB |
634 | if (sdata && |
635 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
636 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b JB |
637 | iterator(data, sdata->vif.addr, &sdata->vif); |
638 | ||
e38bad47 | 639 | rcu_read_unlock(); |
dabeb344 | 640 | } |
2f561feb | 641 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
37ffc8da | 642 | |
42935eca LR |
643 | /* |
644 | * Nothing should have been stuffed into the workqueue during | |
645 | * the suspend->resume cycle. If this WARN is seen then there | |
646 | * is a bug with either the driver suspend or something in | |
647 | * mac80211 stuffing into the workqueue which we haven't yet | |
648 | * cleared during mac80211's suspend cycle. | |
649 | */ | |
650 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
651 | { | |
ceb99fe0 JB |
652 | if (WARN(local->suspended && !local->resuming, |
653 | "queueing ieee80211 work while going to suspend\n")) | |
654 | return false; | |
42935eca LR |
655 | |
656 | return true; | |
657 | } | |
658 | ||
659 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
660 | { | |
661 | struct ieee80211_local *local = hw_to_local(hw); | |
662 | ||
663 | if (!ieee80211_can_queue_work(local)) | |
664 | return; | |
665 | ||
666 | queue_work(local->workqueue, work); | |
667 | } | |
668 | EXPORT_SYMBOL(ieee80211_queue_work); | |
669 | ||
670 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
671 | struct delayed_work *dwork, | |
672 | unsigned long delay) | |
673 | { | |
674 | struct ieee80211_local *local = hw_to_local(hw); | |
675 | ||
676 | if (!ieee80211_can_queue_work(local)) | |
677 | return; | |
678 | ||
679 | queue_delayed_work(local->workqueue, dwork, delay); | |
680 | } | |
681 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
682 | ||
35d865af | 683 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
684 | struct ieee802_11_elems *elems, |
685 | u64 filter, u32 crc) | |
686 | { | |
687 | size_t left = len; | |
35d865af | 688 | const u8 *pos = start; |
dd76986b | 689 | bool calc_crc = filter != 0; |
fcff4f10 | 690 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 691 | const u8 *ie; |
dd76986b | 692 | |
fcff4f10 | 693 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
694 | memset(elems, 0, sizeof(*elems)); |
695 | elems->ie_start = start; | |
696 | elems->total_len = len; | |
697 | ||
698 | while (left >= 2) { | |
699 | u8 id, elen; | |
fcff4f10 | 700 | bool elem_parse_failed; |
dd76986b JB |
701 | |
702 | id = *pos++; | |
703 | elen = *pos++; | |
704 | left -= 2; | |
705 | ||
fcff4f10 PS |
706 | if (elen > left) { |
707 | elems->parse_error = true; | |
dd76986b | 708 | break; |
fcff4f10 PS |
709 | } |
710 | ||
9690fb16 JB |
711 | switch (id) { |
712 | case WLAN_EID_SSID: | |
713 | case WLAN_EID_SUPP_RATES: | |
714 | case WLAN_EID_FH_PARAMS: | |
715 | case WLAN_EID_DS_PARAMS: | |
716 | case WLAN_EID_CF_PARAMS: | |
717 | case WLAN_EID_TIM: | |
718 | case WLAN_EID_IBSS_PARAMS: | |
719 | case WLAN_EID_CHALLENGE: | |
720 | case WLAN_EID_RSN: | |
721 | case WLAN_EID_ERP_INFO: | |
722 | case WLAN_EID_EXT_SUPP_RATES: | |
723 | case WLAN_EID_HT_CAPABILITY: | |
724 | case WLAN_EID_HT_OPERATION: | |
725 | case WLAN_EID_VHT_CAPABILITY: | |
726 | case WLAN_EID_VHT_OPERATION: | |
727 | case WLAN_EID_MESH_ID: | |
728 | case WLAN_EID_MESH_CONFIG: | |
729 | case WLAN_EID_PEER_MGMT: | |
730 | case WLAN_EID_PREQ: | |
731 | case WLAN_EID_PREP: | |
732 | case WLAN_EID_PERR: | |
733 | case WLAN_EID_RANN: | |
734 | case WLAN_EID_CHANNEL_SWITCH: | |
735 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
736 | case WLAN_EID_COUNTRY: | |
737 | case WLAN_EID_PWR_CONSTRAINT: | |
738 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 739 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf JB |
740 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
741 | /* | |
742 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
743 | * that if the content gets bigger it might be needed more than once | |
744 | */ | |
9690fb16 JB |
745 | if (test_bit(id, seen_elems)) { |
746 | elems->parse_error = true; | |
747 | left -= elen; | |
748 | pos += elen; | |
749 | continue; | |
750 | } | |
751 | break; | |
fcff4f10 | 752 | } |
dd76986b JB |
753 | |
754 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
755 | crc = crc32_be(crc, pos - 2, elen + 2); | |
756 | ||
fcff4f10 PS |
757 | elem_parse_failed = false; |
758 | ||
dd76986b JB |
759 | switch (id) { |
760 | case WLAN_EID_SSID: | |
761 | elems->ssid = pos; | |
762 | elems->ssid_len = elen; | |
763 | break; | |
764 | case WLAN_EID_SUPP_RATES: | |
765 | elems->supp_rates = pos; | |
766 | elems->supp_rates_len = elen; | |
767 | break; | |
dd76986b | 768 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
769 | if (elen >= 1) |
770 | elems->ds_params = pos; | |
771 | else | |
772 | elem_parse_failed = true; | |
dd76986b | 773 | break; |
dd76986b JB |
774 | case WLAN_EID_TIM: |
775 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
776 | elems->tim = (void *)pos; | |
777 | elems->tim_len = elen; | |
fcff4f10 PS |
778 | } else |
779 | elem_parse_failed = true; | |
dd76986b | 780 | break; |
dd76986b JB |
781 | case WLAN_EID_CHALLENGE: |
782 | elems->challenge = pos; | |
783 | elems->challenge_len = elen; | |
784 | break; | |
785 | case WLAN_EID_VENDOR_SPECIFIC: | |
786 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
787 | pos[2] == 0xf2) { | |
788 | /* Microsoft OUI (00:50:F2) */ | |
789 | ||
790 | if (calc_crc) | |
791 | crc = crc32_be(crc, pos - 2, elen + 2); | |
792 | ||
441a33ba | 793 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
794 | /* OUI Type 2 - WMM IE */ |
795 | if (pos[4] == 0) { | |
796 | elems->wmm_info = pos; | |
797 | elems->wmm_info_len = elen; | |
798 | } else if (pos[4] == 1) { | |
799 | elems->wmm_param = pos; | |
800 | elems->wmm_param_len = elen; | |
801 | } | |
802 | } | |
803 | } | |
804 | break; | |
805 | case WLAN_EID_RSN: | |
806 | elems->rsn = pos; | |
807 | elems->rsn_len = elen; | |
808 | break; | |
809 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
810 | if (elen >= 1) |
811 | elems->erp_info = pos; | |
812 | else | |
813 | elem_parse_failed = true; | |
dd76986b JB |
814 | break; |
815 | case WLAN_EID_EXT_SUPP_RATES: | |
816 | elems->ext_supp_rates = pos; | |
817 | elems->ext_supp_rates_len = elen; | |
818 | break; | |
819 | case WLAN_EID_HT_CAPABILITY: | |
820 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
821 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
822 | else |
823 | elem_parse_failed = true; | |
dd76986b | 824 | break; |
074d46d1 JB |
825 | case WLAN_EID_HT_OPERATION: |
826 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
827 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
828 | else |
829 | elem_parse_failed = true; | |
dd76986b | 830 | break; |
818255ea MP |
831 | case WLAN_EID_VHT_CAPABILITY: |
832 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
833 | elems->vht_cap_elem = (void *)pos; | |
834 | else | |
835 | elem_parse_failed = true; | |
836 | break; | |
837 | case WLAN_EID_VHT_OPERATION: | |
838 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
839 | elems->vht_operation = (void *)pos; | |
840 | else | |
841 | elem_parse_failed = true; | |
842 | break; | |
bee7f586 JB |
843 | case WLAN_EID_OPMODE_NOTIF: |
844 | if (elen > 0) | |
845 | elems->opmode_notif = pos; | |
846 | else | |
847 | elem_parse_failed = true; | |
848 | break; | |
dd76986b JB |
849 | case WLAN_EID_MESH_ID: |
850 | elems->mesh_id = pos; | |
851 | elems->mesh_id_len = elen; | |
852 | break; | |
853 | case WLAN_EID_MESH_CONFIG: | |
854 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
855 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
856 | else |
857 | elem_parse_failed = true; | |
dd76986b JB |
858 | break; |
859 | case WLAN_EID_PEER_MGMT: | |
860 | elems->peering = pos; | |
861 | elems->peering_len = elen; | |
862 | break; | |
3f52b7e3 MP |
863 | case WLAN_EID_MESH_AWAKE_WINDOW: |
864 | if (elen >= 2) | |
865 | elems->awake_window = (void *)pos; | |
866 | break; | |
dd76986b JB |
867 | case WLAN_EID_PREQ: |
868 | elems->preq = pos; | |
869 | elems->preq_len = elen; | |
870 | break; | |
871 | case WLAN_EID_PREP: | |
872 | elems->prep = pos; | |
873 | elems->prep_len = elen; | |
874 | break; | |
875 | case WLAN_EID_PERR: | |
876 | elems->perr = pos; | |
877 | elems->perr_len = elen; | |
878 | break; | |
879 | case WLAN_EID_RANN: | |
880 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
881 | elems->rann = (void *)pos; | |
fcff4f10 PS |
882 | else |
883 | elem_parse_failed = true; | |
dd76986b JB |
884 | break; |
885 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
886 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
887 | elem_parse_failed = true; | |
888 | break; | |
889 | } | |
890 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 891 | break; |
b4f286a1 JB |
892 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
893 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
894 | elem_parse_failed = true; | |
895 | break; | |
896 | } | |
897 | elems->ext_chansw_ie = (void *)pos; | |
898 | break; | |
85220d71 JB |
899 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
900 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
901 | elem_parse_failed = true; | |
902 | break; | |
903 | } | |
904 | elems->sec_chan_offs = (void *)pos; | |
905 | break; | |
b2e506bf JB |
906 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
907 | if (!action || | |
908 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
909 | elem_parse_failed = true; | |
910 | break; | |
911 | } | |
912 | elems->wide_bw_chansw_ie = (void *)pos; | |
913 | break; | |
914 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
915 | if (action) { | |
916 | elem_parse_failed = true; | |
917 | break; | |
918 | } | |
919 | /* | |
920 | * This is a bit tricky, but as we only care about | |
921 | * the wide bandwidth channel switch element, so | |
922 | * just parse it out manually. | |
923 | */ | |
924 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
925 | pos, elen); | |
926 | if (ie) { | |
927 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
928 | elems->wide_bw_chansw_ie = | |
929 | (void *)(ie + 2); | |
930 | else | |
931 | elem_parse_failed = true; | |
932 | } | |
933 | break; | |
dd76986b JB |
934 | case WLAN_EID_COUNTRY: |
935 | elems->country_elem = pos; | |
936 | elems->country_elem_len = elen; | |
937 | break; | |
938 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
939 | if (elen != 1) { |
940 | elem_parse_failed = true; | |
941 | break; | |
942 | } | |
dd76986b | 943 | elems->pwr_constr_elem = pos; |
dd76986b JB |
944 | break; |
945 | case WLAN_EID_TIMEOUT_INTERVAL: | |
79ba1d89 JB |
946 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
947 | elems->timeout_int = (void *)pos; | |
948 | else | |
949 | elem_parse_failed = true; | |
dd76986b JB |
950 | break; |
951 | default: | |
952 | break; | |
953 | } | |
954 | ||
fcff4f10 PS |
955 | if (elem_parse_failed) |
956 | elems->parse_error = true; | |
957 | else | |
5df45690 | 958 | __set_bit(id, seen_elems); |
fcff4f10 | 959 | |
dd76986b JB |
960 | left -= elen; |
961 | pos += elen; | |
962 | } | |
963 | ||
fcff4f10 PS |
964 | if (left != 0) |
965 | elems->parse_error = true; | |
966 | ||
dd76986b JB |
967 | return crc; |
968 | } | |
969 | ||
3abead59 JB |
970 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
971 | bool bss_notify) | |
5825fe10 JB |
972 | { |
973 | struct ieee80211_local *local = sdata->local; | |
974 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 975 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 976 | int ac; |
a8ce8544 | 977 | bool use_11b, enable_qos; |
aa837e1d | 978 | int aCWmin, aCWmax; |
5825fe10 JB |
979 | |
980 | if (!local->ops->conf_tx) | |
981 | return; | |
982 | ||
54bcbc69 JB |
983 | if (local->hw.queues < IEEE80211_NUM_ACS) |
984 | return; | |
985 | ||
5825fe10 JB |
986 | memset(&qparam, 0, sizeof(qparam)); |
987 | ||
55de908a JB |
988 | rcu_read_lock(); |
989 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
990 | use_11b = (chanctx_conf && | |
4bf88530 | 991 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 992 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 993 | rcu_read_unlock(); |
5825fe10 | 994 | |
a8ce8544 SG |
995 | /* |
996 | * By default disable QoS in STA mode for old access points, which do | |
997 | * not support 802.11e. New APs will provide proper queue parameters, | |
998 | * that we will configure later. | |
999 | */ | |
1000 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
1001 | ||
54bcbc69 | 1002 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
aa837e1d JB |
1003 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1004 | aCWmax = 1023; | |
1005 | if (use_11b) | |
1006 | aCWmin = 31; | |
1007 | else | |
1008 | aCWmin = 15; | |
1009 | ||
a8ce8544 SG |
1010 | if (enable_qos) { |
1011 | switch (ac) { | |
1012 | case IEEE80211_AC_BK: | |
1013 | qparam.cw_max = aCWmax; | |
1014 | qparam.cw_min = aCWmin; | |
1015 | qparam.txop = 0; | |
1016 | qparam.aifs = 7; | |
1017 | break; | |
1018 | /* never happens but let's not leave undefined */ | |
1019 | default: | |
1020 | case IEEE80211_AC_BE: | |
1021 | qparam.cw_max = aCWmax; | |
1022 | qparam.cw_min = aCWmin; | |
1023 | qparam.txop = 0; | |
1024 | qparam.aifs = 3; | |
1025 | break; | |
1026 | case IEEE80211_AC_VI: | |
1027 | qparam.cw_max = aCWmin; | |
1028 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
1029 | if (use_11b) | |
1030 | qparam.txop = 6016/32; | |
1031 | else | |
1032 | qparam.txop = 3008/32; | |
1033 | qparam.aifs = 2; | |
1034 | break; | |
1035 | case IEEE80211_AC_VO: | |
1036 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1037 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
1038 | if (use_11b) | |
1039 | qparam.txop = 3264/32; | |
1040 | else | |
1041 | qparam.txop = 1504/32; | |
1042 | qparam.aifs = 2; | |
1043 | break; | |
1044 | } | |
1045 | } else { | |
1046 | /* Confiure old 802.11b/g medium access rules. */ | |
7ba10a8e JB |
1047 | qparam.cw_max = aCWmax; |
1048 | qparam.cw_min = aCWmin; | |
aa837e1d | 1049 | qparam.txop = 0; |
aa837e1d | 1050 | qparam.aifs = 2; |
aa837e1d | 1051 | } |
5825fe10 | 1052 | |
ab13315a KV |
1053 | qparam.uapsd = false; |
1054 | ||
54bcbc69 JB |
1055 | sdata->tx_conf[ac] = qparam; |
1056 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1057 | } |
e1b3ec1a | 1058 | |
f142c6b9 JB |
1059 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1060 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1061 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1062 | if (bss_notify) |
1063 | ieee80211_bss_info_change_notify(sdata, | |
1064 | BSS_CHANGED_QOS); | |
d9734979 | 1065 | } |
5825fe10 | 1066 | } |
e50db65c | 1067 | |
46900298 JB |
1068 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
1069 | const size_t supp_rates_len, | |
1070 | const u8 *supp_rates) | |
1071 | { | |
55de908a | 1072 | struct ieee80211_chanctx_conf *chanctx_conf; |
46900298 JB |
1073 | int i, have_higher_than_11mbit = 0; |
1074 | ||
1075 | /* cf. IEEE 802.11 9.2.12 */ | |
1076 | for (i = 0; i < supp_rates_len; i++) | |
1077 | if ((supp_rates[i] & 0x7f) * 5 > 110) | |
1078 | have_higher_than_11mbit = 1; | |
1079 | ||
55de908a JB |
1080 | rcu_read_lock(); |
1081 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1082 | ||
1083 | if (chanctx_conf && | |
4bf88530 | 1084 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ && |
46900298 JB |
1085 | have_higher_than_11mbit) |
1086 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1087 | else | |
1088 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
55de908a | 1089 | rcu_read_unlock(); |
46900298 | 1090 | |
3abead59 | 1091 | ieee80211_set_wmm_default(sdata, true); |
46900298 JB |
1092 | } |
1093 | ||
46900298 | 1094 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1095 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1096 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1097 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1098 | u32 tx_flags) | |
46900298 JB |
1099 | { |
1100 | struct ieee80211_local *local = sdata->local; | |
1101 | struct sk_buff *skb; | |
1102 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1103 | int err; |
46900298 JB |
1104 | |
1105 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
65fc73ac | 1106 | sizeof(*mgmt) + 6 + extra_len); |
d15b8459 | 1107 | if (!skb) |
46900298 | 1108 | return; |
d15b8459 | 1109 | |
46900298 JB |
1110 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1111 | ||
1112 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1113 | memset(mgmt, 0, 24 + 6); | |
1114 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1115 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1116 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1117 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1118 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1119 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1120 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1121 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1122 | if (extra) |
1123 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1124 | |
fffd0934 JB |
1125 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1126 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1127 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1128 | WARN_ON(err); | |
1129 | } | |
1130 | ||
1672c0e3 JB |
1131 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1132 | tx_flags; | |
62ae67be | 1133 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1134 | } |
1135 | ||
6ae16775 AQ |
1136 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1137 | const u8 *bssid, u16 stype, u16 reason, | |
1138 | bool send_frame, u8 *frame_buf) | |
1139 | { | |
1140 | struct ieee80211_local *local = sdata->local; | |
1141 | struct sk_buff *skb; | |
1142 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1143 | ||
1144 | /* build frame */ | |
1145 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1146 | mgmt->duration = 0; /* initialize only */ | |
1147 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1148 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1149 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1150 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1151 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1152 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1153 | ||
1154 | if (send_frame) { | |
1155 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1156 | IEEE80211_DEAUTH_FRAME_LEN); | |
1157 | if (!skb) | |
1158 | return; | |
1159 | ||
1160 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1161 | ||
1162 | /* copy in frame */ | |
1163 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1164 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1165 | ||
1166 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1167 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1168 | IEEE80211_SKB_CB(skb)->flags |= | |
1169 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1170 | ||
1171 | ieee80211_tx_skb(sdata, skb); | |
1172 | } | |
1173 | } | |
1174 | ||
de95a54b | 1175 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
c604b9f2 | 1176 | size_t buffer_len, const u8 *ie, size_t ie_len, |
651b5225 JM |
1177 | enum ieee80211_band band, u32 rate_mask, |
1178 | u8 channel) | |
de95a54b JB |
1179 | { |
1180 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1181 | u8 *pos = buffer, *end = buffer + buffer_len; |
8e664fb3 JB |
1182 | size_t offset = 0, noffset; |
1183 | int supp_rates_len, i; | |
8dcb2003 JM |
1184 | u8 rates[32]; |
1185 | int num_rates; | |
1186 | int ext_rates_len; | |
de95a54b | 1187 | |
4d36ec58 | 1188 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1189 | if (WARN_ON_ONCE(!sband)) |
1190 | return 0; | |
de95a54b | 1191 | |
8dcb2003 JM |
1192 | num_rates = 0; |
1193 | for (i = 0; i < sband->n_bitrates; i++) { | |
1194 | if ((BIT(i) & rate_mask) == 0) | |
1195 | continue; /* skip rate */ | |
1196 | rates[num_rates++] = (u8) (sband->bitrates[i].bitrate / 5); | |
1197 | } | |
1198 | ||
1199 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1200 | |
c604b9f2 JB |
1201 | if (end - pos < 2 + supp_rates_len) |
1202 | goto out_err; | |
de95a54b | 1203 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1204 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1205 | memcpy(pos, rates, supp_rates_len); |
1206 | pos += supp_rates_len; | |
8e664fb3 JB |
1207 | |
1208 | /* insert "request information" if in custom IEs */ | |
1209 | if (ie && ie_len) { | |
1210 | static const u8 before_extrates[] = { | |
1211 | WLAN_EID_SSID, | |
1212 | WLAN_EID_SUPP_RATES, | |
1213 | WLAN_EID_REQUEST, | |
1214 | }; | |
1215 | noffset = ieee80211_ie_split(ie, ie_len, | |
1216 | before_extrates, | |
1217 | ARRAY_SIZE(before_extrates), | |
1218 | offset); | |
c604b9f2 JB |
1219 | if (end - pos < noffset - offset) |
1220 | goto out_err; | |
8e664fb3 JB |
1221 | memcpy(pos, ie + offset, noffset - offset); |
1222 | pos += noffset - offset; | |
1223 | offset = noffset; | |
1224 | } | |
1225 | ||
8dcb2003 JM |
1226 | ext_rates_len = num_rates - supp_rates_len; |
1227 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1228 | if (end - pos < 2 + ext_rates_len) |
1229 | goto out_err; | |
8e664fb3 | 1230 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1231 | *pos++ = ext_rates_len; |
1232 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1233 | pos += ext_rates_len; | |
8e664fb3 JB |
1234 | } |
1235 | ||
651b5225 | 1236 | if (channel && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1237 | if (end - pos < 3) |
1238 | goto out_err; | |
651b5225 JM |
1239 | *pos++ = WLAN_EID_DS_PARAMS; |
1240 | *pos++ = 1; | |
1241 | *pos++ = channel; | |
1242 | } | |
1243 | ||
8e664fb3 JB |
1244 | /* insert custom IEs that go before HT */ |
1245 | if (ie && ie_len) { | |
1246 | static const u8 before_ht[] = { | |
1247 | WLAN_EID_SSID, | |
1248 | WLAN_EID_SUPP_RATES, | |
1249 | WLAN_EID_REQUEST, | |
1250 | WLAN_EID_EXT_SUPP_RATES, | |
1251 | WLAN_EID_DS_PARAMS, | |
1252 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1253 | }; | |
1254 | noffset = ieee80211_ie_split(ie, ie_len, | |
1255 | before_ht, ARRAY_SIZE(before_ht), | |
1256 | offset); | |
c604b9f2 JB |
1257 | if (end - pos < noffset - offset) |
1258 | goto out_err; | |
8e664fb3 JB |
1259 | memcpy(pos, ie + offset, noffset - offset); |
1260 | pos += noffset - offset; | |
1261 | offset = noffset; | |
de95a54b JB |
1262 | } |
1263 | ||
c604b9f2 JB |
1264 | if (sband->ht_cap.ht_supported) { |
1265 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1266 | goto out_err; | |
ef96a842 BG |
1267 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1268 | sband->ht_cap.cap); | |
c604b9f2 | 1269 | } |
5ef2d41a | 1270 | |
de95a54b JB |
1271 | /* |
1272 | * If adding more here, adjust code in main.c | |
1273 | * that calculates local->scan_ies_len. | |
1274 | */ | |
1275 | ||
8e664fb3 JB |
1276 | /* add any remaining custom IEs */ |
1277 | if (ie && ie_len) { | |
1278 | noffset = ie_len; | |
c604b9f2 JB |
1279 | if (end - pos < noffset - offset) |
1280 | goto out_err; | |
8e664fb3 JB |
1281 | memcpy(pos, ie + offset, noffset - offset); |
1282 | pos += noffset - offset; | |
de95a54b JB |
1283 | } |
1284 | ||
c604b9f2 JB |
1285 | if (sband->vht_cap.vht_supported) { |
1286 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) | |
1287 | goto out_err; | |
ba0afa2f MP |
1288 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1289 | sband->vht_cap.cap); | |
c604b9f2 | 1290 | } |
ba0afa2f | 1291 | |
c604b9f2 JB |
1292 | return pos - buffer; |
1293 | out_err: | |
1294 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1295 | return pos - buffer; |
1296 | } | |
1297 | ||
a619a4c0 | 1298 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
85a237fe | 1299 | u8 *dst, u32 ratemask, |
6b77863b | 1300 | struct ieee80211_channel *chan, |
a619a4c0 | 1301 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1302 | const u8 *ie, size_t ie_len, |
1303 | bool directed) | |
46900298 JB |
1304 | { |
1305 | struct ieee80211_local *local = sdata->local; | |
46900298 JB |
1306 | struct sk_buff *skb; |
1307 | struct ieee80211_mgmt *mgmt; | |
6b77863b | 1308 | u8 chan_no; |
b9a9ada1 | 1309 | int ies_len; |
46900298 | 1310 | |
a806c558 PS |
1311 | /* |
1312 | * Do not send DS Channel parameter for directed probe requests | |
1313 | * in order to maximize the chance that we get a response. Some | |
1314 | * badly-behaved APs don't respond when this parameter is included. | |
1315 | */ | |
1316 | if (directed) | |
6b77863b | 1317 | chan_no = 0; |
a806c558 | 1318 | else |
6b77863b | 1319 | chan_no = ieee80211_frequency_to_channel(chan->center_freq); |
651b5225 | 1320 | |
7c12ce8b | 1321 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
b9a9ada1 | 1322 | ssid, ssid_len, 100 + ie_len); |
5b2bbf75 | 1323 | if (!skb) |
b9a9ada1 JB |
1324 | return NULL; |
1325 | ||
1326 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), | |
1327 | skb_tailroom(skb), | |
1328 | ie, ie_len, chan->band, | |
1329 | ratemask, chan_no); | |
1330 | skb_put(skb, ies_len); | |
7c12ce8b | 1331 | |
46900298 | 1332 | if (dst) { |
7c12ce8b | 1333 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1334 | memcpy(mgmt->da, dst, ETH_ALEN); |
1335 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1336 | } |
46900298 | 1337 | |
62ae67be | 1338 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1339 | |
a619a4c0 JO |
1340 | return skb; |
1341 | } | |
1342 | ||
1343 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1344 | const u8 *ssid, size_t ssid_len, | |
a806c558 | 1345 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1346 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1347 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1348 | { |
1349 | struct sk_buff *skb; | |
1350 | ||
fe94fe05 | 1351 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
6b77863b | 1352 | ssid, ssid_len, |
85a237fe | 1353 | ie, ie_len, directed); |
aad14ceb | 1354 | if (skb) { |
1672c0e3 | 1355 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1356 | if (scan) |
1357 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1358 | else | |
1359 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1360 | } |
46900298 JB |
1361 | } |
1362 | ||
1363 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, | |
1364 | struct ieee802_11_elems *elems, | |
9ebb61a2 | 1365 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1366 | { |
1367 | struct ieee80211_supported_band *sband; | |
1368 | struct ieee80211_rate *bitrates; | |
1369 | size_t num_rates; | |
1370 | u32 supp_rates; | |
1371 | int i, j; | |
1372 | sband = local->hw.wiphy->bands[band]; | |
1373 | ||
4ee73f33 MK |
1374 | if (WARN_ON(!sband)) |
1375 | return 1; | |
46900298 JB |
1376 | |
1377 | bitrates = sband->bitrates; | |
1378 | num_rates = sband->n_bitrates; | |
1379 | supp_rates = 0; | |
1380 | for (i = 0; i < elems->supp_rates_len + | |
1381 | elems->ext_supp_rates_len; i++) { | |
1382 | u8 rate = 0; | |
1383 | int own_rate; | |
9ebb61a2 | 1384 | bool is_basic; |
46900298 JB |
1385 | if (i < elems->supp_rates_len) |
1386 | rate = elems->supp_rates[i]; | |
1387 | else if (elems->ext_supp_rates) | |
1388 | rate = elems->ext_supp_rates | |
1389 | [i - elems->supp_rates_len]; | |
1390 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1391 | is_basic = !!(rate & 0x80); |
1392 | ||
1393 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1394 | continue; | |
1395 | ||
1396 | for (j = 0; j < num_rates; j++) { | |
1397 | if (bitrates[j].bitrate == own_rate) { | |
46900298 | 1398 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1399 | if (basic_rates && is_basic) |
1400 | *basic_rates |= BIT(j); | |
1401 | } | |
1402 | } | |
46900298 JB |
1403 | } |
1404 | return supp_rates; | |
1405 | } | |
f2753ddb | 1406 | |
84f6a01c JB |
1407 | void ieee80211_stop_device(struct ieee80211_local *local) |
1408 | { | |
1409 | ieee80211_led_radio(local, false); | |
67408c8c | 1410 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1411 | |
1412 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1413 | |
1414 | flush_workqueue(local->workqueue); | |
678f415f | 1415 | drv_stop(local); |
84f6a01c JB |
1416 | } |
1417 | ||
153a5fc4 SG |
1418 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1419 | struct ieee80211_sub_if_data *sdata) | |
1420 | { | |
1421 | struct ieee80211_chanctx_conf *conf; | |
1422 | struct ieee80211_chanctx *ctx; | |
1423 | ||
1424 | if (!local->use_chanctx) | |
1425 | return; | |
1426 | ||
1427 | mutex_lock(&local->chanctx_mtx); | |
1428 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1429 | lockdep_is_held(&local->chanctx_mtx)); | |
1430 | if (conf) { | |
1431 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1432 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1433 | } | |
1434 | mutex_unlock(&local->chanctx_mtx); | |
1435 | } | |
1436 | ||
f2753ddb JB |
1437 | int ieee80211_reconfig(struct ieee80211_local *local) |
1438 | { | |
1439 | struct ieee80211_hw *hw = &local->hw; | |
1440 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1441 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1442 | struct sta_info *sta; |
2683d65b | 1443 | int res, i; |
d888130a JB |
1444 | bool reconfig_due_to_wowlan = false; |
1445 | ||
8f21b0ad | 1446 | #ifdef CONFIG_PM |
ceb99fe0 JB |
1447 | if (local->suspended) |
1448 | local->resuming = true; | |
f2753ddb | 1449 | |
eecc4800 JB |
1450 | if (local->wowlan) { |
1451 | local->wowlan = false; | |
1452 | res = drv_resume(local); | |
1453 | if (res < 0) { | |
1454 | local->resuming = false; | |
1455 | return res; | |
1456 | } | |
1457 | if (res == 0) | |
1458 | goto wake_up; | |
1459 | WARN_ON(res > 1); | |
1460 | /* | |
1461 | * res is 1, which means the driver requested | |
1462 | * to go through a regular reset on wakeup. | |
1463 | */ | |
d888130a | 1464 | reconfig_due_to_wowlan = true; |
eecc4800 JB |
1465 | } |
1466 | #endif | |
94f9b97b JB |
1467 | /* everything else happens only if HW was up & running */ |
1468 | if (!local->open_count) | |
1469 | goto wake_up; | |
f2753ddb | 1470 | |
94f9b97b JB |
1471 | /* |
1472 | * Upon resume hardware can sometimes be goofy due to | |
1473 | * various platform / driver / bus issues, so restarting | |
1474 | * the device may at times not work immediately. Propagate | |
1475 | * the error. | |
1476 | */ | |
1477 | res = drv_start(local); | |
1478 | if (res) { | |
1479 | WARN(local->suspended, "Hardware became unavailable " | |
1480 | "upon resume. This could be a software issue " | |
1481 | "prior to suspend or a hardware issue.\n"); | |
1482 | return res; | |
f2753ddb JB |
1483 | } |
1484 | ||
7f281975 YAP |
1485 | /* setup fragmentation threshold */ |
1486 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1487 | ||
1488 | /* setup RTS threshold */ | |
1489 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1490 | ||
1491 | /* reset coverage class */ | |
1492 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1493 | ||
94f9b97b JB |
1494 | ieee80211_led_radio(local, true); |
1495 | ieee80211_mod_tpt_led_trig(local, | |
1496 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1497 | ||
f2753ddb | 1498 | /* add interfaces */ |
4b6f1dd6 JB |
1499 | sdata = rtnl_dereference(local->monitor_sdata); |
1500 | if (sdata) { | |
3c3e21e7 JB |
1501 | /* in HW restart it exists already */ |
1502 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1503 | res = drv_add_interface(local, sdata); |
1504 | if (WARN_ON(res)) { | |
1505 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
1506 | synchronize_net(); | |
1507 | kfree(sdata); | |
1508 | } | |
1509 | } | |
1510 | ||
f2753ddb JB |
1511 | list_for_each_entry(sdata, &local->interfaces, list) { |
1512 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1513 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1ed32e4f | 1514 | ieee80211_sdata_running(sdata)) |
7b7eab6f | 1515 | res = drv_add_interface(local, sdata); |
f2753ddb JB |
1516 | } |
1517 | ||
55de908a | 1518 | /* add channel contexts */ |
f0dea9c7 AS |
1519 | if (local->use_chanctx) { |
1520 | mutex_lock(&local->chanctx_mtx); | |
1521 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1522 | WARN_ON(drv_add_chanctx(local, ctx)); | |
1523 | mutex_unlock(&local->chanctx_mtx); | |
1524 | } | |
55de908a | 1525 | |
6352c87f | 1526 | list_for_each_entry(sdata, &local->interfaces, list) { |
6352c87f JB |
1527 | if (!ieee80211_sdata_running(sdata)) |
1528 | continue; | |
153a5fc4 | 1529 | ieee80211_assign_chanctx(local, sdata); |
6352c87f JB |
1530 | } |
1531 | ||
fe5f2559 | 1532 | sdata = rtnl_dereference(local->monitor_sdata); |
153a5fc4 SG |
1533 | if (sdata && ieee80211_sdata_running(sdata)) |
1534 | ieee80211_assign_chanctx(local, sdata); | |
fe5f2559 | 1535 | |
f2753ddb | 1536 | /* add STAs back */ |
34e89507 JB |
1537 | mutex_lock(&local->sta_mtx); |
1538 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1539 | enum ieee80211_sta_state state; |
f09603a2 | 1540 | |
2e8d397e AN |
1541 | if (!sta->uploaded) |
1542 | continue; | |
1543 | ||
1544 | /* AP-mode stations will be added later */ | |
1545 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1546 | continue; | |
1547 | ||
1548 | for (state = IEEE80211_STA_NOTEXIST; | |
1549 | state < sta->sta_state; state++) | |
1550 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1551 | state + 1)); | |
f2753ddb | 1552 | } |
34e89507 | 1553 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1554 | |
2683d65b | 1555 | /* reconfigure tx conf */ |
54bcbc69 JB |
1556 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1557 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1558 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1559 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1560 | !ieee80211_sdata_running(sdata)) | |
1561 | continue; | |
f6f3def3 | 1562 | |
54bcbc69 JB |
1563 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1564 | drv_conf_tx(local, sdata, i, | |
1565 | &sdata->tx_conf[i]); | |
1566 | } | |
f6f3def3 | 1567 | } |
2683d65b | 1568 | |
f2753ddb JB |
1569 | /* reconfigure hardware */ |
1570 | ieee80211_hw_config(local, ~0); | |
1571 | ||
f2753ddb | 1572 | ieee80211_configure_filter(local); |
f2753ddb JB |
1573 | |
1574 | /* Finally also reconfigure all the BSS information */ | |
1575 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1576 | u32 changed; |
1577 | ||
9607e6b6 | 1578 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1579 | continue; |
ac8dd506 JB |
1580 | |
1581 | /* common change flags for all interface types */ | |
1582 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1583 | BSS_CHANGED_ERP_PREAMBLE | | |
1584 | BSS_CHANGED_ERP_SLOT | | |
1585 | BSS_CHANGED_HT | | |
1586 | BSS_CHANGED_BASIC_RATES | | |
1587 | BSS_CHANGED_BEACON_INT | | |
1588 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1589 | BSS_CHANGED_CQM | |
55de47f6 | 1590 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1591 | BSS_CHANGED_IDLE | |
1592 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1593 | |
f2753ddb JB |
1594 | switch (sdata->vif.type) { |
1595 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1596 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1597 | BSS_CHANGED_ARP_FILTER | |
1598 | BSS_CHANGED_PS; | |
c65dd147 | 1599 | |
989c6505 AB |
1600 | /* Re-send beacon info report to the driver */ |
1601 | if (sdata->u.mgd.have_beacon) | |
1602 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1603 | |
8d61ffa5 | 1604 | sdata_lock(sdata); |
ac8dd506 | 1605 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1606 | sdata_unlock(sdata); |
ac8dd506 | 1607 | break; |
f2753ddb | 1608 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1609 | changed |= BSS_CHANGED_IBSS; |
1610 | /* fall through */ | |
f2753ddb | 1611 | case NL80211_IFTYPE_AP: |
339afbf4 | 1612 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1613 | |
1041638f | 1614 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1615 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1616 | ||
1041638f JB |
1617 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1618 | drv_start_ap(local, sdata); | |
1619 | } | |
1620 | ||
7827493b | 1621 | /* fall through */ |
f2753ddb | 1622 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1623 | if (sdata->vif.bss_conf.enable_beacon) { |
1624 | changed |= BSS_CHANGED_BEACON | | |
1625 | BSS_CHANGED_BEACON_ENABLED; | |
1626 | ieee80211_bss_info_change_notify(sdata, changed); | |
1627 | } | |
f2753ddb JB |
1628 | break; |
1629 | case NL80211_IFTYPE_WDS: | |
1630 | break; | |
1631 | case NL80211_IFTYPE_AP_VLAN: | |
1632 | case NL80211_IFTYPE_MONITOR: | |
1633 | /* ignore virtual */ | |
1634 | break; | |
98104fde | 1635 | case NL80211_IFTYPE_P2P_DEVICE: |
f142c6b9 JB |
1636 | changed = BSS_CHANGED_IDLE; |
1637 | break; | |
f2753ddb | 1638 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1639 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1640 | case NL80211_IFTYPE_P2P_CLIENT: |
1641 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1642 | WARN_ON(1); |
1643 | break; | |
1644 | } | |
1645 | } | |
1646 | ||
8e1b23b9 ES |
1647 | ieee80211_recalc_ps(local, -1); |
1648 | ||
6e1b1b24 EP |
1649 | /* |
1650 | * The sta might be in psm against the ap (e.g. because | |
1651 | * this was the state before a hw restart), so we | |
1652 | * explicitly send a null packet in order to make sure | |
1653 | * it'll sync against the ap (and get out of psm). | |
1654 | */ | |
1655 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1656 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1657 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1658 | continue; | |
20f544ee JB |
1659 | if (!sdata->u.mgd.associated) |
1660 | continue; | |
6e1b1b24 EP |
1661 | |
1662 | ieee80211_send_nullfunc(local, sdata, 0); | |
1663 | } | |
1664 | } | |
1665 | ||
2e8d397e AN |
1666 | /* APs are now beaconing, add back stations */ |
1667 | mutex_lock(&local->sta_mtx); | |
1668 | list_for_each_entry(sta, &local->sta_list, list) { | |
1669 | enum ieee80211_sta_state state; | |
1670 | ||
1671 | if (!sta->uploaded) | |
1672 | continue; | |
1673 | ||
1674 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1675 | continue; | |
1676 | ||
1677 | for (state = IEEE80211_STA_NOTEXIST; | |
1678 | state < sta->sta_state; state++) | |
1679 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1680 | state + 1)); | |
1681 | } | |
1682 | mutex_unlock(&local->sta_mtx); | |
1683 | ||
7b21aea0 ES |
1684 | /* add back keys */ |
1685 | list_for_each_entry(sdata, &local->interfaces, list) | |
1686 | if (ieee80211_sdata_running(sdata)) | |
1687 | ieee80211_enable_keys(sdata); | |
1688 | ||
c6209488 | 1689 | wake_up: |
04800ada AN |
1690 | local->in_reconfig = false; |
1691 | barrier(); | |
1692 | ||
3c3e21e7 JB |
1693 | if (local->monitors == local->open_count && local->monitors > 0) |
1694 | ieee80211_add_virtual_monitor(local); | |
1695 | ||
2a419056 JB |
1696 | /* |
1697 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
1698 | * sessions can be established after a resume. | |
1699 | * | |
1700 | * Also tear down aggregation sessions since reconfiguring | |
1701 | * them in a hardware restart scenario is not easily done | |
1702 | * right now, and the hardware will have lost information | |
1703 | * about the sessions, but we and the AP still think they | |
1704 | * are active. This is really a workaround though. | |
1705 | */ | |
74e2bd1f | 1706 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
2a419056 JB |
1707 | mutex_lock(&local->sta_mtx); |
1708 | ||
1709 | list_for_each_entry(sta, &local->sta_list, list) { | |
c82c4a80 JB |
1710 | ieee80211_sta_tear_down_BA_sessions( |
1711 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 1712 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 1713 | } |
2a419056 JB |
1714 | |
1715 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 1716 | } |
74e2bd1f | 1717 | |
445ea4e8 JB |
1718 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
1719 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
f2753ddb | 1720 | |
5bb644a0 JB |
1721 | /* |
1722 | * If this is for hw restart things are still running. | |
1723 | * We may want to change that later, however. | |
1724 | */ | |
8f21b0ad | 1725 | if (!local->suspended || reconfig_due_to_wowlan) |
9214ad7f | 1726 | drv_restart_complete(local); |
8f21b0ad JB |
1727 | |
1728 | if (!local->suspended) | |
5bb644a0 JB |
1729 | return 0; |
1730 | ||
1731 | #ifdef CONFIG_PM | |
ceb99fe0 | 1732 | /* first set suspended false, then resuming */ |
5bb644a0 | 1733 | local->suspended = false; |
ceb99fe0 JB |
1734 | mb(); |
1735 | local->resuming = false; | |
5bb644a0 | 1736 | |
b8360ab8 JB |
1737 | list_for_each_entry(sdata, &local->interfaces, list) { |
1738 | if (!ieee80211_sdata_running(sdata)) | |
1739 | continue; | |
1740 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1741 | ieee80211_sta_restart(sdata); | |
1742 | } | |
1743 | ||
26d59535 | 1744 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
1745 | #else |
1746 | WARN_ON(1); | |
1747 | #endif | |
f2753ddb JB |
1748 | return 0; |
1749 | } | |
42935eca | 1750 | |
95acac61 JB |
1751 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
1752 | { | |
1753 | struct ieee80211_sub_if_data *sdata; | |
1754 | struct ieee80211_local *local; | |
1755 | struct ieee80211_key *key; | |
1756 | ||
1757 | if (WARN_ON(!vif)) | |
1758 | return; | |
1759 | ||
1760 | sdata = vif_to_sdata(vif); | |
1761 | local = sdata->local; | |
1762 | ||
1763 | if (WARN_ON(!local->resuming)) | |
1764 | return; | |
1765 | ||
1766 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
1767 | return; | |
1768 | ||
1769 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
1770 | ||
1771 | mutex_lock(&local->key_mtx); | |
1772 | list_for_each_entry(key, &sdata->key_list, list) | |
1773 | key->flags |= KEY_FLAG_TAINTED; | |
1774 | mutex_unlock(&local->key_mtx); | |
1775 | } | |
1776 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
1777 | ||
04ecd257 | 1778 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 1779 | { |
04ecd257 JB |
1780 | struct ieee80211_local *local = sdata->local; |
1781 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1782 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 1783 | |
04ecd257 | 1784 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 1785 | |
04ecd257 JB |
1786 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1787 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 1788 | |
04ecd257 | 1789 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 1790 | goto unlock; |
0f78231b | 1791 | |
04ecd257 JB |
1792 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
1793 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 1794 | unlock: |
04ecd257 | 1795 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 1796 | } |
8e664fb3 JB |
1797 | |
1798 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) | |
1799 | { | |
1800 | int i; | |
1801 | ||
1802 | for (i = 0; i < n_ids; i++) | |
1803 | if (ids[i] == id) | |
1804 | return true; | |
1805 | return false; | |
1806 | } | |
1807 | ||
1808 | /** | |
1809 | * ieee80211_ie_split - split an IE buffer according to ordering | |
1810 | * | |
1811 | * @ies: the IE buffer | |
1812 | * @ielen: the length of the IE buffer | |
1813 | * @ids: an array with element IDs that are allowed before | |
1814 | * the split | |
1815 | * @n_ids: the size of the element ID array | |
1816 | * @offset: offset where to start splitting in the buffer | |
1817 | * | |
1818 | * This function splits an IE buffer by updating the @offset | |
1819 | * variable to point to the location where the buffer should be | |
1820 | * split. | |
1821 | * | |
1822 | * It assumes that the given IE buffer is well-formed, this | |
1823 | * has to be guaranteed by the caller! | |
1824 | * | |
1825 | * It also assumes that the IEs in the buffer are ordered | |
1826 | * correctly, if not the result of using this function will not | |
1827 | * be ordered correctly either, i.e. it does no reordering. | |
1828 | * | |
1829 | * The function returns the offset where the next part of the | |
1830 | * buffer starts, which may be @ielen if the entire (remainder) | |
1831 | * of the buffer should be used. | |
1832 | */ | |
1833 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1834 | const u8 *ids, int n_ids, size_t offset) | |
1835 | { | |
1836 | size_t pos = offset; | |
1837 | ||
1838 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) | |
1839 | pos += 2 + ies[pos + 1]; | |
1840 | ||
1841 | return pos; | |
1842 | } | |
1843 | ||
1844 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) | |
1845 | { | |
1846 | size_t pos = offset; | |
1847 | ||
1848 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
1849 | pos += 2 + ies[pos + 1]; | |
1850 | ||
1851 | return pos; | |
1852 | } | |
615f7b9b MV |
1853 | |
1854 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
1855 | int rssi_min_thold, | |
1856 | int rssi_max_thold) | |
1857 | { | |
1858 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
1859 | ||
1860 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1861 | return; | |
1862 | ||
1863 | /* | |
1864 | * Scale up threshold values before storing it, as the RSSI averaging | |
1865 | * algorithm uses a scaled up value as well. Change this scaling | |
1866 | * factor if the RSSI averaging algorithm changes. | |
1867 | */ | |
1868 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
1869 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
1870 | } | |
1871 | ||
1872 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
1873 | int rssi_min_thold, | |
1874 | int rssi_max_thold) | |
1875 | { | |
1876 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1877 | ||
1878 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
1879 | rssi_min_thold > rssi_max_thold); | |
1880 | ||
1881 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
1882 | rssi_max_thold); | |
1883 | } | |
1884 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
1885 | ||
1886 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
1887 | { | |
1888 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1889 | ||
1890 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
1891 | } | |
1892 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 1893 | |
ef96a842 | 1894 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
1895 | u16 cap) |
1896 | { | |
1897 | __le16 tmp; | |
1898 | ||
1899 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
1900 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
1901 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
1902 | ||
1903 | /* capability flags */ | |
1904 | tmp = cpu_to_le16(cap); | |
1905 | memcpy(pos, &tmp, sizeof(u16)); | |
1906 | pos += sizeof(u16); | |
1907 | ||
1908 | /* AMPDU parameters */ | |
ef96a842 BG |
1909 | *pos++ = ht_cap->ampdu_factor | |
1910 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
1911 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
1912 | ||
1913 | /* MCS set */ | |
ef96a842 BG |
1914 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
1915 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
1916 | |
1917 | /* extended capabilities */ | |
1918 | pos += sizeof(__le16); | |
1919 | ||
1920 | /* BF capabilities */ | |
1921 | pos += sizeof(__le32); | |
1922 | ||
1923 | /* antenna selection */ | |
1924 | pos += sizeof(u8); | |
1925 | ||
1926 | return pos; | |
1927 | } | |
1928 | ||
ba0afa2f | 1929 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 1930 | u32 cap) |
ba0afa2f MP |
1931 | { |
1932 | __le32 tmp; | |
1933 | ||
1934 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
1935 | *pos++ = sizeof(struct ieee80211_vht_cap); |
1936 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
1937 | |
1938 | /* capability flags */ | |
1939 | tmp = cpu_to_le32(cap); | |
1940 | memcpy(pos, &tmp, sizeof(u32)); | |
1941 | pos += sizeof(u32); | |
1942 | ||
1943 | /* VHT MCS set */ | |
1944 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
1945 | pos += sizeof(vht_cap->vht_mcs); | |
1946 | ||
1947 | return pos; | |
1948 | } | |
1949 | ||
074d46d1 | 1950 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 1951 | const struct cfg80211_chan_def *chandef, |
431e3154 | 1952 | u16 prot_mode) |
42e7aa77 | 1953 | { |
074d46d1 | 1954 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 1955 | /* Build HT Information */ |
074d46d1 JB |
1956 | *pos++ = WLAN_EID_HT_OPERATION; |
1957 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
1958 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
1959 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
1960 | chandef->chan->center_freq); | |
1961 | switch (chandef->width) { | |
1962 | case NL80211_CHAN_WIDTH_160: | |
1963 | case NL80211_CHAN_WIDTH_80P80: | |
1964 | case NL80211_CHAN_WIDTH_80: | |
1965 | case NL80211_CHAN_WIDTH_40: | |
1966 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
1967 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
1968 | else | |
1969 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 1970 | break; |
42e7aa77 | 1971 | default: |
074d46d1 | 1972 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
1973 | break; |
1974 | } | |
aee286c2 | 1975 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
1976 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
1977 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 1978 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 1979 | |
431e3154 | 1980 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 1981 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
1982 | |
1983 | /* It seems that Basic MCS set and Supported MCS set | |
1984 | are identical for the first 10 bytes */ | |
074d46d1 JB |
1985 | memset(&ht_oper->basic_set, 0, 16); |
1986 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 1987 | |
074d46d1 | 1988 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
1989 | } |
1990 | ||
4bf88530 | 1991 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 1992 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 1993 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
1994 | { |
1995 | enum nl80211_channel_type channel_type; | |
1996 | ||
4bf88530 JB |
1997 | if (!ht_oper) { |
1998 | cfg80211_chandef_create(chandef, control_chan, | |
1999 | NL80211_CHAN_NO_HT); | |
2000 | return; | |
2001 | } | |
42e7aa77 | 2002 | |
074d46d1 | 2003 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2004 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2005 | channel_type = NL80211_CHAN_HT20; | |
2006 | break; | |
2007 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2008 | channel_type = NL80211_CHAN_HT40PLUS; | |
2009 | break; | |
2010 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2011 | channel_type = NL80211_CHAN_HT40MINUS; | |
2012 | break; | |
2013 | default: | |
2014 | channel_type = NL80211_CHAN_NO_HT; | |
2015 | } | |
2016 | ||
4bf88530 | 2017 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
2018 | } |
2019 | ||
fc8a7321 | 2020 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2021 | struct sk_buff *skb, bool need_basic, |
2022 | enum ieee80211_band band) | |
768db343 | 2023 | { |
768db343 AN |
2024 | struct ieee80211_local *local = sdata->local; |
2025 | struct ieee80211_supported_band *sband; | |
2026 | int rate; | |
2027 | u8 i, rates, *pos; | |
fc8a7321 | 2028 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
768db343 | 2029 | |
6b77863b | 2030 | sband = local->hw.wiphy->bands[band]; |
768db343 AN |
2031 | rates = sband->n_bitrates; |
2032 | if (rates > 8) | |
2033 | rates = 8; | |
2034 | ||
2035 | if (skb_tailroom(skb) < rates + 2) | |
2036 | return -ENOMEM; | |
2037 | ||
2038 | pos = skb_put(skb, rates + 2); | |
2039 | *pos++ = WLAN_EID_SUPP_RATES; | |
2040 | *pos++ = rates; | |
2041 | for (i = 0; i < rates; i++) { | |
657c3e0c AN |
2042 | u8 basic = 0; |
2043 | if (need_basic && basic_rates & BIT(i)) | |
2044 | basic = 0x80; | |
768db343 | 2045 | rate = sband->bitrates[i].bitrate; |
657c3e0c | 2046 | *pos++ = basic | (u8) (rate / 5); |
768db343 AN |
2047 | } |
2048 | ||
2049 | return 0; | |
2050 | } | |
2051 | ||
fc8a7321 | 2052 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2053 | struct sk_buff *skb, bool need_basic, |
2054 | enum ieee80211_band band) | |
768db343 | 2055 | { |
768db343 AN |
2056 | struct ieee80211_local *local = sdata->local; |
2057 | struct ieee80211_supported_band *sband; | |
2058 | int rate; | |
2059 | u8 i, exrates, *pos; | |
fc8a7321 | 2060 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
768db343 | 2061 | |
6b77863b | 2062 | sband = local->hw.wiphy->bands[band]; |
768db343 AN |
2063 | exrates = sband->n_bitrates; |
2064 | if (exrates > 8) | |
2065 | exrates -= 8; | |
2066 | else | |
2067 | exrates = 0; | |
2068 | ||
2069 | if (skb_tailroom(skb) < exrates + 2) | |
2070 | return -ENOMEM; | |
2071 | ||
2072 | if (exrates) { | |
2073 | pos = skb_put(skb, exrates + 2); | |
2074 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2075 | *pos++ = exrates; | |
2076 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c AN |
2077 | u8 basic = 0; |
2078 | if (need_basic && basic_rates & BIT(i)) | |
2079 | basic = 0x80; | |
768db343 | 2080 | rate = sband->bitrates[i].bitrate; |
657c3e0c | 2081 | *pos++ = basic | (u8) (rate / 5); |
768db343 AN |
2082 | } |
2083 | } | |
2084 | return 0; | |
2085 | } | |
1dae27f8 WYG |
2086 | |
2087 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2088 | { | |
2089 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2090 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2091 | ||
be6bcabc WYG |
2092 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2093 | /* non-managed type inferfaces */ | |
2094 | return 0; | |
2095 | } | |
3a7bba64 | 2096 | return ifmgd->ave_beacon_signal / 16; |
1dae27f8 | 2097 | } |
0d8a0a17 | 2098 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2099 | |
2100 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2101 | { | |
2102 | if (!mcs) | |
2103 | return 1; | |
2104 | ||
2105 | /* TODO: consider rx_highest */ | |
2106 | ||
2107 | if (mcs->rx_mask[3]) | |
2108 | return 4; | |
2109 | if (mcs->rx_mask[2]) | |
2110 | return 3; | |
2111 | if (mcs->rx_mask[1]) | |
2112 | return 2; | |
2113 | return 1; | |
2114 | } | |
f4bda337 TP |
2115 | |
2116 | /** | |
2117 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2118 | * @local: mac80211 hw info struct | |
2119 | * @status: RX status | |
2120 | * @mpdu_len: total MPDU length (including FCS) | |
2121 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2122 | * | |
2123 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2124 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2125 | * the timestamp to TSF at beginning of MPDU reception. | |
2126 | */ | |
2127 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2128 | struct ieee80211_rx_status *status, | |
2129 | unsigned int mpdu_len, | |
2130 | unsigned int mpdu_offset) | |
2131 | { | |
2132 | u64 ts = status->mactime; | |
2133 | struct rate_info ri; | |
2134 | u16 rate; | |
2135 | ||
2136 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2137 | return 0; | |
2138 | ||
2139 | memset(&ri, 0, sizeof(ri)); | |
2140 | ||
2141 | /* Fill cfg80211 rate info */ | |
2142 | if (status->flag & RX_FLAG_HT) { | |
2143 | ri.mcs = status->rate_idx; | |
2144 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2145 | if (status->flag & RX_FLAG_40MHZ) | |
2146 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2147 | if (status->flag & RX_FLAG_SHORT_GI) | |
2148 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2149 | } else if (status->flag & RX_FLAG_VHT) { |
2150 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2151 | ri.mcs = status->rate_idx; | |
2152 | ri.nss = status->vht_nss; | |
2153 | if (status->flag & RX_FLAG_40MHZ) | |
2154 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2155 | if (status->flag & RX_FLAG_80MHZ) | |
2156 | ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; | |
2157 | if (status->flag & RX_FLAG_80P80MHZ) | |
2158 | ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; | |
2159 | if (status->flag & RX_FLAG_160MHZ) | |
2160 | ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; | |
2161 | if (status->flag & RX_FLAG_SHORT_GI) | |
2162 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2163 | } else { |
2164 | struct ieee80211_supported_band *sband; | |
2165 | ||
2166 | sband = local->hw.wiphy->bands[status->band]; | |
2167 | ri.legacy = sband->bitrates[status->rate_idx].bitrate; | |
2168 | } | |
2169 | ||
2170 | rate = cfg80211_calculate_bitrate(&ri); | |
2171 | ||
2172 | /* rewind from end of MPDU */ | |
2173 | if (status->flag & RX_FLAG_MACTIME_END) | |
2174 | ts -= mpdu_len * 8 * 10 / rate; | |
2175 | ||
2176 | ts += mpdu_offset * 8 * 10 / rate; | |
2177 | ||
2178 | return ts; | |
2179 | } | |
164eb02d SW |
2180 | |
2181 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2182 | { | |
2183 | struct ieee80211_sub_if_data *sdata; | |
2184 | ||
2185 | mutex_lock(&local->iflist_mtx); | |
2186 | list_for_each_entry(sdata, &local->interfaces, list) { | |
2187 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); | |
2188 | ||
2189 | if (sdata->wdev.cac_started) { | |
2190 | ieee80211_vif_release_channel(sdata); | |
2191 | cfg80211_cac_event(sdata->dev, | |
2192 | NL80211_RADAR_CAC_ABORTED, | |
2193 | GFP_KERNEL); | |
2194 | } | |
2195 | } | |
2196 | mutex_unlock(&local->iflist_mtx); | |
2197 | } | |
2198 | ||
2199 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2200 | { | |
2201 | struct ieee80211_local *local = | |
2202 | container_of(work, struct ieee80211_local, radar_detected_work); | |
2203 | struct cfg80211_chan_def chandef; | |
2204 | ||
2205 | ieee80211_dfs_cac_cancel(local); | |
2206 | ||
2207 | if (local->use_chanctx) | |
2208 | /* currently not handled */ | |
2209 | WARN_ON(1); | |
2210 | else { | |
675a0b04 | 2211 | chandef = local->hw.conf.chandef; |
164eb02d SW |
2212 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
2213 | } | |
2214 | } | |
2215 | ||
2216 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2217 | { | |
2218 | struct ieee80211_local *local = hw_to_local(hw); | |
2219 | ||
2220 | trace_api_radar_detected(local); | |
2221 | ||
2222 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2223 | } | |
2224 | EXPORT_SYMBOL(ieee80211_radar_detected); |