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, |
c2d1560a JB |
110 | int rate, int erp, int short_preamble) |
111 | { | |
112 | int dur; | |
113 | ||
114 | /* calculate duration (in microseconds, rounded up to next higher | |
115 | * integer if it includes a fractional microsecond) to send frame of | |
116 | * len bytes (does not include FCS) at the given rate. Duration will | |
117 | * also include SIFS. | |
118 | * | |
119 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
120 | * DIV_ROUND_UP() operations. | |
121 | */ | |
122 | ||
4ee73f33 | 123 | if (band == IEEE80211_BAND_5GHZ || erp) { |
c2d1560a JB |
124 | /* |
125 | * OFDM: | |
126 | * | |
127 | * N_DBPS = DATARATE x 4 | |
128 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
129 | * (16 = SIGNAL time, 6 = tail bits) | |
130 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
131 | * | |
132 | * T_SYM = 4 usec | |
133 | * 802.11a - 17.5.2: aSIFSTime = 16 usec | |
134 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + | |
135 | * signal ext = 6 usec | |
136 | */ | |
c2d1560a JB |
137 | dur = 16; /* SIFS + signal ext */ |
138 | dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */ | |
139 | dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */ | |
140 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
141 | 4 * rate); /* T_SYM x N_SYM */ | |
142 | } else { | |
143 | /* | |
144 | * 802.11b or 802.11g with 802.11b compatibility: | |
145 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
146 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
147 | * | |
148 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
149 | * aSIFSTime = 10 usec | |
150 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
151 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
152 | */ | |
153 | dur = 10; /* aSIFSTime = 10 usec */ | |
154 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
155 | ||
156 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
157 | } | |
158 | ||
159 | return dur; | |
160 | } | |
161 | ||
162 | /* Exported duration function for driver use */ | |
32bfd35d JB |
163 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
164 | struct ieee80211_vif *vif, | |
4ee73f33 | 165 | enum ieee80211_band band, |
8318d78a JB |
166 | size_t frame_len, |
167 | struct ieee80211_rate *rate) | |
c2d1560a | 168 | { |
25d834e1 | 169 | struct ieee80211_sub_if_data *sdata; |
c2d1560a JB |
170 | u16 dur; |
171 | int erp; | |
25d834e1 | 172 | bool short_preamble = false; |
c2d1560a | 173 | |
8318d78a | 174 | erp = 0; |
25d834e1 JB |
175 | if (vif) { |
176 | sdata = vif_to_sdata(vif); | |
bda3933a | 177 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
178 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
179 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
180 | } | |
8318d78a | 181 | |
4ee73f33 | 182 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
25d834e1 | 183 | short_preamble); |
c2d1560a JB |
184 | |
185 | return cpu_to_le16(dur); | |
186 | } | |
187 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
188 | ||
32bfd35d JB |
189 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
190 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 191 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
192 | { |
193 | struct ieee80211_local *local = hw_to_local(hw); | |
194 | struct ieee80211_rate *rate; | |
25d834e1 | 195 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 196 | bool short_preamble; |
c2d1560a JB |
197 | int erp; |
198 | u16 dur; | |
2e92e6f2 JB |
199 | struct ieee80211_supported_band *sband; |
200 | ||
4ee73f33 | 201 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 202 | |
25d834e1 | 203 | short_preamble = false; |
7e9ed188 | 204 | |
e039fa4a | 205 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
206 | |
207 | erp = 0; | |
25d834e1 JB |
208 | if (vif) { |
209 | sdata = vif_to_sdata(vif); | |
bda3933a | 210 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
211 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
212 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
213 | } | |
c2d1560a JB |
214 | |
215 | /* CTS duration */ | |
4ee73f33 | 216 | dur = ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
c2d1560a JB |
217 | erp, short_preamble); |
218 | /* Data frame duration */ | |
4ee73f33 | 219 | dur += ieee80211_frame_duration(sband->band, frame_len, rate->bitrate, |
c2d1560a JB |
220 | erp, short_preamble); |
221 | /* ACK duration */ | |
4ee73f33 | 222 | dur += ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
c2d1560a JB |
223 | erp, short_preamble); |
224 | ||
225 | return cpu_to_le16(dur); | |
226 | } | |
227 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
228 | ||
32bfd35d JB |
229 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
230 | struct ieee80211_vif *vif, | |
c2d1560a | 231 | size_t frame_len, |
e039fa4a | 232 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
233 | { |
234 | struct ieee80211_local *local = hw_to_local(hw); | |
235 | struct ieee80211_rate *rate; | |
25d834e1 | 236 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 237 | bool short_preamble; |
c2d1560a JB |
238 | int erp; |
239 | u16 dur; | |
2e92e6f2 JB |
240 | struct ieee80211_supported_band *sband; |
241 | ||
4ee73f33 | 242 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 243 | |
25d834e1 | 244 | short_preamble = false; |
7e9ed188 | 245 | |
e039fa4a | 246 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 247 | erp = 0; |
25d834e1 JB |
248 | if (vif) { |
249 | sdata = vif_to_sdata(vif); | |
bda3933a | 250 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
251 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
252 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
253 | } | |
c2d1560a JB |
254 | |
255 | /* Data frame duration */ | |
4ee73f33 | 256 | dur = ieee80211_frame_duration(sband->band, frame_len, rate->bitrate, |
c2d1560a | 257 | erp, short_preamble); |
e039fa4a | 258 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 259 | /* ACK duration */ |
4ee73f33 | 260 | dur += ieee80211_frame_duration(sband->band, 10, rate->bitrate, |
c2d1560a JB |
261 | erp, short_preamble); |
262 | } | |
263 | ||
264 | return cpu_to_le16(dur); | |
265 | } | |
266 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
267 | ||
3a25a8c8 JB |
268 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
269 | { | |
270 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
271 | int n_acs = IEEE80211_NUM_ACS; |
272 | ||
273 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
274 | n_acs = 1; | |
3a25a8c8 JB |
275 | |
276 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
277 | int ac; | |
278 | ||
f142c6b9 JB |
279 | if (!sdata->dev) |
280 | continue; | |
281 | ||
3a25a8c8 JB |
282 | if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) |
283 | continue; | |
284 | ||
285 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && | |
286 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
287 | continue; | |
288 | ||
a6f38ac3 | 289 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
290 | int ac_queue = sdata->vif.hw_queue[ac]; |
291 | ||
292 | if (ac_queue == queue || | |
293 | (sdata->vif.cab_queue == queue && | |
294 | local->queue_stop_reasons[ac_queue] == 0 && | |
295 | skb_queue_empty(&local->pending[ac_queue]))) | |
296 | netif_wake_subqueue(sdata->dev, ac); | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
ce7c9111 KV |
301 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
302 | enum queue_stop_reason reason) | |
c2d1560a JB |
303 | { |
304 | struct ieee80211_local *local = hw_to_local(hw); | |
305 | ||
b5878a2d JB |
306 | trace_wake_queue(local, queue, reason); |
307 | ||
e4e72fb4 JB |
308 | if (WARN_ON(queue >= hw->queues)) |
309 | return; | |
ce7c9111 | 310 | |
ada15125 JB |
311 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
312 | return; | |
313 | ||
96f5e66e JB |
314 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
315 | ||
316 | if (local->queue_stop_reasons[queue] != 0) | |
317 | /* someone still has this queue stopped */ | |
318 | return; | |
319 | ||
7236fe29 JB |
320 | if (skb_queue_empty(&local->pending[queue])) { |
321 | rcu_read_lock(); | |
3a25a8c8 | 322 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
323 | rcu_read_unlock(); |
324 | } else | |
3b8d81e0 | 325 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 326 | } |
ce7c9111 | 327 | |
96f5e66e JB |
328 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
329 | enum queue_stop_reason reason) | |
ce7c9111 KV |
330 | { |
331 | struct ieee80211_local *local = hw_to_local(hw); | |
332 | unsigned long flags; | |
333 | ||
334 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
335 | __ieee80211_wake_queue(hw, queue, reason); | |
336 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
337 | } | |
338 | ||
339 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
340 | { | |
341 | ieee80211_wake_queue_by_reason(hw, queue, | |
342 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
343 | } | |
c2d1560a JB |
344 | EXPORT_SYMBOL(ieee80211_wake_queue); |
345 | ||
ce7c9111 KV |
346 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
347 | enum queue_stop_reason reason) | |
c2d1560a JB |
348 | { |
349 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 350 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 351 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 352 | |
b5878a2d JB |
353 | trace_stop_queue(local, queue, reason); |
354 | ||
e4e72fb4 JB |
355 | if (WARN_ON(queue >= hw->queues)) |
356 | return; | |
96f5e66e | 357 | |
ada15125 JB |
358 | if (test_bit(reason, &local->queue_stop_reasons[queue])) |
359 | return; | |
360 | ||
2a577d98 | 361 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
cf0277e7 | 362 | |
a6f38ac3 JB |
363 | if (local->hw.queues < IEEE80211_NUM_ACS) |
364 | n_acs = 1; | |
365 | ||
cf0277e7 | 366 | rcu_read_lock(); |
3a25a8c8 JB |
367 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
368 | int ac; | |
369 | ||
f142c6b9 JB |
370 | if (!sdata->dev) |
371 | continue; | |
372 | ||
a6f38ac3 | 373 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
374 | if (sdata->vif.hw_queue[ac] == queue || |
375 | sdata->vif.cab_queue == queue) | |
376 | netif_stop_subqueue(sdata->dev, ac); | |
377 | } | |
378 | } | |
cf0277e7 | 379 | rcu_read_unlock(); |
c2d1560a | 380 | } |
ce7c9111 | 381 | |
96f5e66e JB |
382 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
383 | enum queue_stop_reason reason) | |
ce7c9111 KV |
384 | { |
385 | struct ieee80211_local *local = hw_to_local(hw); | |
386 | unsigned long flags; | |
387 | ||
388 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
389 | __ieee80211_stop_queue(hw, queue, reason); | |
390 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
391 | } | |
392 | ||
393 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
394 | { | |
395 | ieee80211_stop_queue_by_reason(hw, queue, | |
396 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
397 | } | |
c2d1560a JB |
398 | EXPORT_SYMBOL(ieee80211_stop_queue); |
399 | ||
8f77f384 JB |
400 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
401 | struct sk_buff *skb) | |
402 | { | |
403 | struct ieee80211_hw *hw = &local->hw; | |
404 | unsigned long flags; | |
a7bc376c | 405 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 406 | int queue = info->hw_queue; |
a7bc376c JB |
407 | |
408 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 409 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
410 | return; |
411 | } | |
8f77f384 JB |
412 | |
413 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
414 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
3b8d81e0 | 415 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
416 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
417 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
418 | } | |
419 | ||
b0b97a8a JB |
420 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
421 | struct sk_buff_head *skbs, | |
422 | void (*fn)(void *data), void *data) | |
8f77f384 JB |
423 | { |
424 | struct ieee80211_hw *hw = &local->hw; | |
425 | struct sk_buff *skb; | |
426 | unsigned long flags; | |
b0b97a8a | 427 | int queue, i; |
8f77f384 JB |
428 | |
429 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 430 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
431 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
432 | ||
433 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 434 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
435 | continue; |
436 | } | |
437 | ||
3a25a8c8 | 438 | queue = info->hw_queue; |
4644ae89 JB |
439 | |
440 | __ieee80211_stop_queue(hw, queue, | |
441 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
442 | ||
3b8d81e0 | 443 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
444 | } |
445 | ||
50a9432d JB |
446 | if (fn) |
447 | fn(data); | |
448 | ||
3b8d81e0 | 449 | for (i = 0; i < hw->queues; i++) |
8f77f384 JB |
450 | __ieee80211_wake_queue(hw, i, |
451 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
8f77f384 | 452 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
453 | } |
454 | ||
ce7c9111 KV |
455 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
456 | enum queue_stop_reason reason) | |
c2d1560a | 457 | { |
ce7c9111 KV |
458 | struct ieee80211_local *local = hw_to_local(hw); |
459 | unsigned long flags; | |
c2d1560a JB |
460 | int i; |
461 | ||
ce7c9111 KV |
462 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
463 | ||
96f5e66e | 464 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
465 | __ieee80211_stop_queue(hw, i, reason); |
466 | ||
467 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
468 | } | |
469 | ||
470 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
471 | { | |
472 | ieee80211_stop_queues_by_reason(hw, | |
473 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
474 | } |
475 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
476 | ||
92ab8535 TW |
477 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
478 | { | |
479 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
480 | unsigned long flags; |
481 | int ret; | |
96f5e66e | 482 | |
e4e72fb4 JB |
483 | if (WARN_ON(queue >= hw->queues)) |
484 | return true; | |
96f5e66e | 485 | |
3b8d81e0 JB |
486 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
487 | ret = !!local->queue_stop_reasons[queue]; | |
488 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
489 | return ret; | |
92ab8535 TW |
490 | } |
491 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
492 | ||
ce7c9111 KV |
493 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
494 | enum queue_stop_reason reason) | |
c2d1560a | 495 | { |
ce7c9111 KV |
496 | struct ieee80211_local *local = hw_to_local(hw); |
497 | unsigned long flags; | |
c2d1560a JB |
498 | int i; |
499 | ||
ce7c9111 KV |
500 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
501 | ||
e4e72fb4 | 502 | for (i = 0; i < hw->queues; i++) |
ce7c9111 KV |
503 | __ieee80211_wake_queue(hw, i, reason); |
504 | ||
505 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
506 | } | |
507 | ||
508 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
509 | { | |
510 | ieee80211_wake_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
511 | } |
512 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 513 | |
39ecc01d JB |
514 | void ieee80211_flush_queues(struct ieee80211_local *local, |
515 | struct ieee80211_sub_if_data *sdata) | |
516 | { | |
517 | u32 queues; | |
518 | ||
519 | if (!local->ops->flush) | |
520 | return; | |
521 | ||
522 | if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { | |
523 | int ac; | |
524 | ||
525 | queues = 0; | |
526 | ||
527 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
528 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
529 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
530 | queues |= BIT(sdata->vif.cab_queue); | |
531 | } else { | |
532 | /* all queues */ | |
533 | queues = BIT(local->hw.queues) - 1; | |
534 | } | |
535 | ||
536 | drv_flush(local, queues, false); | |
537 | } | |
538 | ||
32bfd35d | 539 | void ieee80211_iterate_active_interfaces( |
8b2c9824 | 540 | struct ieee80211_hw *hw, u32 iter_flags, |
32bfd35d JB |
541 | void (*iterator)(void *data, u8 *mac, |
542 | struct ieee80211_vif *vif), | |
543 | void *data) | |
dabeb344 JB |
544 | { |
545 | struct ieee80211_local *local = hw_to_local(hw); | |
546 | struct ieee80211_sub_if_data *sdata; | |
547 | ||
c771c9d8 | 548 | mutex_lock(&local->iflist_mtx); |
2f561feb ID |
549 | |
550 | list_for_each_entry(sdata, &local->interfaces, list) { | |
551 | switch (sdata->vif.type) { | |
05c914fe JB |
552 | case NL80211_IFTYPE_MONITOR: |
553 | case NL80211_IFTYPE_AP_VLAN: | |
2f561feb | 554 | continue; |
2ca27bcf | 555 | default: |
2f561feb ID |
556 | break; |
557 | } | |
8b2c9824 JB |
558 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
559 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
560 | continue; | |
9607e6b6 | 561 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 562 | iterator(data, sdata->vif.addr, |
2f561feb ID |
563 | &sdata->vif); |
564 | } | |
565 | ||
685fb72b JB |
566 | sdata = rcu_dereference_protected(local->monitor_sdata, |
567 | lockdep_is_held(&local->iflist_mtx)); | |
8b2c9824 JB |
568 | if (sdata && |
569 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
570 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b JB |
571 | iterator(data, sdata->vif.addr, &sdata->vif); |
572 | ||
c771c9d8 | 573 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
574 | } |
575 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
576 | ||
577 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 578 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
579 | void (*iterator)(void *data, u8 *mac, |
580 | struct ieee80211_vif *vif), | |
581 | void *data) | |
582 | { | |
583 | struct ieee80211_local *local = hw_to_local(hw); | |
584 | struct ieee80211_sub_if_data *sdata; | |
585 | ||
e38bad47 | 586 | rcu_read_lock(); |
dabeb344 | 587 | |
e38bad47 | 588 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 589 | switch (sdata->vif.type) { |
05c914fe JB |
590 | case NL80211_IFTYPE_MONITOR: |
591 | case NL80211_IFTYPE_AP_VLAN: | |
dabeb344 | 592 | continue; |
2ca27bcf | 593 | default: |
dabeb344 JB |
594 | break; |
595 | } | |
8b2c9824 JB |
596 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
597 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
598 | continue; | |
9607e6b6 | 599 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 600 | iterator(data, sdata->vif.addr, |
32bfd35d | 601 | &sdata->vif); |
dabeb344 | 602 | } |
e38bad47 | 603 | |
685fb72b | 604 | sdata = rcu_dereference(local->monitor_sdata); |
8b2c9824 JB |
605 | if (sdata && |
606 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
607 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b JB |
608 | iterator(data, sdata->vif.addr, &sdata->vif); |
609 | ||
e38bad47 | 610 | rcu_read_unlock(); |
dabeb344 | 611 | } |
2f561feb | 612 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
37ffc8da | 613 | |
42935eca LR |
614 | /* |
615 | * Nothing should have been stuffed into the workqueue during | |
616 | * the suspend->resume cycle. If this WARN is seen then there | |
617 | * is a bug with either the driver suspend or something in | |
618 | * mac80211 stuffing into the workqueue which we haven't yet | |
619 | * cleared during mac80211's suspend cycle. | |
620 | */ | |
621 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
622 | { | |
ceb99fe0 JB |
623 | if (WARN(local->suspended && !local->resuming, |
624 | "queueing ieee80211 work while going to suspend\n")) | |
625 | return false; | |
42935eca LR |
626 | |
627 | return true; | |
628 | } | |
629 | ||
630 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
631 | { | |
632 | struct ieee80211_local *local = hw_to_local(hw); | |
633 | ||
634 | if (!ieee80211_can_queue_work(local)) | |
635 | return; | |
636 | ||
637 | queue_work(local->workqueue, work); | |
638 | } | |
639 | EXPORT_SYMBOL(ieee80211_queue_work); | |
640 | ||
641 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
642 | struct delayed_work *dwork, | |
643 | unsigned long delay) | |
644 | { | |
645 | struct ieee80211_local *local = hw_to_local(hw); | |
646 | ||
647 | if (!ieee80211_can_queue_work(local)) | |
648 | return; | |
649 | ||
650 | queue_delayed_work(local->workqueue, dwork, delay); | |
651 | } | |
652 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
653 | ||
dd76986b JB |
654 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, |
655 | struct ieee802_11_elems *elems, | |
656 | u64 filter, u32 crc) | |
657 | { | |
658 | size_t left = len; | |
659 | u8 *pos = start; | |
660 | bool calc_crc = filter != 0; | |
fcff4f10 | 661 | DECLARE_BITMAP(seen_elems, 256); |
dd76986b | 662 | |
fcff4f10 | 663 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
664 | memset(elems, 0, sizeof(*elems)); |
665 | elems->ie_start = start; | |
666 | elems->total_len = len; | |
667 | ||
668 | while (left >= 2) { | |
669 | u8 id, elen; | |
fcff4f10 | 670 | bool elem_parse_failed; |
dd76986b JB |
671 | |
672 | id = *pos++; | |
673 | elen = *pos++; | |
674 | left -= 2; | |
675 | ||
fcff4f10 PS |
676 | if (elen > left) { |
677 | elems->parse_error = true; | |
dd76986b | 678 | break; |
fcff4f10 PS |
679 | } |
680 | ||
9690fb16 JB |
681 | switch (id) { |
682 | case WLAN_EID_SSID: | |
683 | case WLAN_EID_SUPP_RATES: | |
684 | case WLAN_EID_FH_PARAMS: | |
685 | case WLAN_EID_DS_PARAMS: | |
686 | case WLAN_EID_CF_PARAMS: | |
687 | case WLAN_EID_TIM: | |
688 | case WLAN_EID_IBSS_PARAMS: | |
689 | case WLAN_EID_CHALLENGE: | |
690 | case WLAN_EID_RSN: | |
691 | case WLAN_EID_ERP_INFO: | |
692 | case WLAN_EID_EXT_SUPP_RATES: | |
693 | case WLAN_EID_HT_CAPABILITY: | |
694 | case WLAN_EID_HT_OPERATION: | |
695 | case WLAN_EID_VHT_CAPABILITY: | |
696 | case WLAN_EID_VHT_OPERATION: | |
697 | case WLAN_EID_MESH_ID: | |
698 | case WLAN_EID_MESH_CONFIG: | |
699 | case WLAN_EID_PEER_MGMT: | |
700 | case WLAN_EID_PREQ: | |
701 | case WLAN_EID_PREP: | |
702 | case WLAN_EID_PERR: | |
703 | case WLAN_EID_RANN: | |
704 | case WLAN_EID_CHANNEL_SWITCH: | |
705 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
706 | case WLAN_EID_COUNTRY: | |
707 | case WLAN_EID_PWR_CONSTRAINT: | |
708 | case WLAN_EID_TIMEOUT_INTERVAL: | |
709 | if (test_bit(id, seen_elems)) { | |
710 | elems->parse_error = true; | |
711 | left -= elen; | |
712 | pos += elen; | |
713 | continue; | |
714 | } | |
715 | break; | |
fcff4f10 | 716 | } |
dd76986b JB |
717 | |
718 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
719 | crc = crc32_be(crc, pos - 2, elen + 2); | |
720 | ||
fcff4f10 PS |
721 | elem_parse_failed = false; |
722 | ||
dd76986b JB |
723 | switch (id) { |
724 | case WLAN_EID_SSID: | |
725 | elems->ssid = pos; | |
726 | elems->ssid_len = elen; | |
727 | break; | |
728 | case WLAN_EID_SUPP_RATES: | |
729 | elems->supp_rates = pos; | |
730 | elems->supp_rates_len = elen; | |
731 | break; | |
732 | case WLAN_EID_FH_PARAMS: | |
733 | elems->fh_params = pos; | |
734 | elems->fh_params_len = elen; | |
735 | break; | |
736 | case WLAN_EID_DS_PARAMS: | |
737 | elems->ds_params = pos; | |
738 | elems->ds_params_len = elen; | |
739 | break; | |
740 | case WLAN_EID_CF_PARAMS: | |
741 | elems->cf_params = pos; | |
742 | elems->cf_params_len = elen; | |
743 | break; | |
744 | case WLAN_EID_TIM: | |
745 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
746 | elems->tim = (void *)pos; | |
747 | elems->tim_len = elen; | |
fcff4f10 PS |
748 | } else |
749 | elem_parse_failed = true; | |
dd76986b JB |
750 | break; |
751 | case WLAN_EID_IBSS_PARAMS: | |
752 | elems->ibss_params = pos; | |
753 | elems->ibss_params_len = elen; | |
754 | break; | |
755 | case WLAN_EID_CHALLENGE: | |
756 | elems->challenge = pos; | |
757 | elems->challenge_len = elen; | |
758 | break; | |
759 | case WLAN_EID_VENDOR_SPECIFIC: | |
760 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
761 | pos[2] == 0xf2) { | |
762 | /* Microsoft OUI (00:50:F2) */ | |
763 | ||
764 | if (calc_crc) | |
765 | crc = crc32_be(crc, pos - 2, elen + 2); | |
766 | ||
441a33ba | 767 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
768 | /* OUI Type 2 - WMM IE */ |
769 | if (pos[4] == 0) { | |
770 | elems->wmm_info = pos; | |
771 | elems->wmm_info_len = elen; | |
772 | } else if (pos[4] == 1) { | |
773 | elems->wmm_param = pos; | |
774 | elems->wmm_param_len = elen; | |
775 | } | |
776 | } | |
777 | } | |
778 | break; | |
779 | case WLAN_EID_RSN: | |
780 | elems->rsn = pos; | |
781 | elems->rsn_len = elen; | |
782 | break; | |
783 | case WLAN_EID_ERP_INFO: | |
784 | elems->erp_info = pos; | |
785 | elems->erp_info_len = elen; | |
786 | break; | |
787 | case WLAN_EID_EXT_SUPP_RATES: | |
788 | elems->ext_supp_rates = pos; | |
789 | elems->ext_supp_rates_len = elen; | |
790 | break; | |
791 | case WLAN_EID_HT_CAPABILITY: | |
792 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
793 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
794 | else |
795 | elem_parse_failed = true; | |
dd76986b | 796 | break; |
074d46d1 JB |
797 | case WLAN_EID_HT_OPERATION: |
798 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
799 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
800 | else |
801 | elem_parse_failed = true; | |
dd76986b | 802 | break; |
818255ea MP |
803 | case WLAN_EID_VHT_CAPABILITY: |
804 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
805 | elems->vht_cap_elem = (void *)pos; | |
806 | else | |
807 | elem_parse_failed = true; | |
808 | break; | |
809 | case WLAN_EID_VHT_OPERATION: | |
810 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
811 | elems->vht_operation = (void *)pos; | |
812 | else | |
813 | elem_parse_failed = true; | |
814 | break; | |
bee7f586 JB |
815 | case WLAN_EID_OPMODE_NOTIF: |
816 | if (elen > 0) | |
817 | elems->opmode_notif = pos; | |
818 | else | |
819 | elem_parse_failed = true; | |
820 | break; | |
dd76986b JB |
821 | case WLAN_EID_MESH_ID: |
822 | elems->mesh_id = pos; | |
823 | elems->mesh_id_len = elen; | |
824 | break; | |
825 | case WLAN_EID_MESH_CONFIG: | |
826 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
827 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
828 | else |
829 | elem_parse_failed = true; | |
dd76986b JB |
830 | break; |
831 | case WLAN_EID_PEER_MGMT: | |
832 | elems->peering = pos; | |
833 | elems->peering_len = elen; | |
834 | break; | |
3f52b7e3 MP |
835 | case WLAN_EID_MESH_AWAKE_WINDOW: |
836 | if (elen >= 2) | |
837 | elems->awake_window = (void *)pos; | |
838 | break; | |
dd76986b JB |
839 | case WLAN_EID_PREQ: |
840 | elems->preq = pos; | |
841 | elems->preq_len = elen; | |
842 | break; | |
843 | case WLAN_EID_PREP: | |
844 | elems->prep = pos; | |
845 | elems->prep_len = elen; | |
846 | break; | |
847 | case WLAN_EID_PERR: | |
848 | elems->perr = pos; | |
849 | elems->perr_len = elen; | |
850 | break; | |
851 | case WLAN_EID_RANN: | |
852 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
853 | elems->rann = (void *)pos; | |
fcff4f10 PS |
854 | else |
855 | elem_parse_failed = true; | |
dd76986b JB |
856 | break; |
857 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
858 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
859 | elem_parse_failed = true; | |
860 | break; | |
861 | } | |
862 | elems->ch_switch_ie = (void *)pos; | |
dd76986b JB |
863 | break; |
864 | case WLAN_EID_QUIET: | |
865 | if (!elems->quiet_elem) { | |
866 | elems->quiet_elem = pos; | |
867 | elems->quiet_elem_len = elen; | |
868 | } | |
869 | elems->num_of_quiet_elem++; | |
870 | break; | |
871 | case WLAN_EID_COUNTRY: | |
872 | elems->country_elem = pos; | |
873 | elems->country_elem_len = elen; | |
874 | break; | |
875 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
876 | if (elen != 1) { |
877 | elem_parse_failed = true; | |
878 | break; | |
879 | } | |
dd76986b | 880 | elems->pwr_constr_elem = pos; |
dd76986b JB |
881 | break; |
882 | case WLAN_EID_TIMEOUT_INTERVAL: | |
883 | elems->timeout_int = pos; | |
884 | elems->timeout_int_len = elen; | |
885 | break; | |
886 | default: | |
887 | break; | |
888 | } | |
889 | ||
fcff4f10 PS |
890 | if (elem_parse_failed) |
891 | elems->parse_error = true; | |
892 | else | |
5df45690 | 893 | __set_bit(id, seen_elems); |
fcff4f10 | 894 | |
dd76986b JB |
895 | left -= elen; |
896 | pos += elen; | |
897 | } | |
898 | ||
fcff4f10 PS |
899 | if (left != 0) |
900 | elems->parse_error = true; | |
901 | ||
dd76986b JB |
902 | return crc; |
903 | } | |
904 | ||
37ffc8da JB |
905 | void ieee802_11_parse_elems(u8 *start, size_t len, |
906 | struct ieee802_11_elems *elems) | |
d91f36db JB |
907 | { |
908 | ieee802_11_parse_elems_crc(start, len, elems, 0, 0); | |
909 | } | |
910 | ||
3abead59 JB |
911 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
912 | bool bss_notify) | |
5825fe10 JB |
913 | { |
914 | struct ieee80211_local *local = sdata->local; | |
915 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 916 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 917 | int ac; |
a8ce8544 | 918 | bool use_11b, enable_qos; |
aa837e1d | 919 | int aCWmin, aCWmax; |
5825fe10 JB |
920 | |
921 | if (!local->ops->conf_tx) | |
922 | return; | |
923 | ||
54bcbc69 JB |
924 | if (local->hw.queues < IEEE80211_NUM_ACS) |
925 | return; | |
926 | ||
5825fe10 JB |
927 | memset(&qparam, 0, sizeof(qparam)); |
928 | ||
55de908a JB |
929 | rcu_read_lock(); |
930 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
931 | use_11b = (chanctx_conf && | |
4bf88530 | 932 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 933 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 934 | rcu_read_unlock(); |
5825fe10 | 935 | |
a8ce8544 SG |
936 | /* |
937 | * By default disable QoS in STA mode for old access points, which do | |
938 | * not support 802.11e. New APs will provide proper queue parameters, | |
939 | * that we will configure later. | |
940 | */ | |
941 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
942 | ||
54bcbc69 | 943 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
aa837e1d JB |
944 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
945 | aCWmax = 1023; | |
946 | if (use_11b) | |
947 | aCWmin = 31; | |
948 | else | |
949 | aCWmin = 15; | |
950 | ||
a8ce8544 SG |
951 | if (enable_qos) { |
952 | switch (ac) { | |
953 | case IEEE80211_AC_BK: | |
954 | qparam.cw_max = aCWmax; | |
955 | qparam.cw_min = aCWmin; | |
956 | qparam.txop = 0; | |
957 | qparam.aifs = 7; | |
958 | break; | |
959 | /* never happens but let's not leave undefined */ | |
960 | default: | |
961 | case IEEE80211_AC_BE: | |
962 | qparam.cw_max = aCWmax; | |
963 | qparam.cw_min = aCWmin; | |
964 | qparam.txop = 0; | |
965 | qparam.aifs = 3; | |
966 | break; | |
967 | case IEEE80211_AC_VI: | |
968 | qparam.cw_max = aCWmin; | |
969 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
970 | if (use_11b) | |
971 | qparam.txop = 6016/32; | |
972 | else | |
973 | qparam.txop = 3008/32; | |
974 | qparam.aifs = 2; | |
975 | break; | |
976 | case IEEE80211_AC_VO: | |
977 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
978 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
979 | if (use_11b) | |
980 | qparam.txop = 3264/32; | |
981 | else | |
982 | qparam.txop = 1504/32; | |
983 | qparam.aifs = 2; | |
984 | break; | |
985 | } | |
986 | } else { | |
987 | /* Confiure old 802.11b/g medium access rules. */ | |
7ba10a8e JB |
988 | qparam.cw_max = aCWmax; |
989 | qparam.cw_min = aCWmin; | |
aa837e1d | 990 | qparam.txop = 0; |
aa837e1d | 991 | qparam.aifs = 2; |
aa837e1d | 992 | } |
5825fe10 | 993 | |
ab13315a KV |
994 | qparam.uapsd = false; |
995 | ||
54bcbc69 JB |
996 | sdata->tx_conf[ac] = qparam; |
997 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 998 | } |
e1b3ec1a | 999 | |
f142c6b9 JB |
1000 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1001 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1002 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1003 | if (bss_notify) |
1004 | ieee80211_bss_info_change_notify(sdata, | |
1005 | BSS_CHANGED_QOS); | |
d9734979 | 1006 | } |
5825fe10 | 1007 | } |
e50db65c | 1008 | |
46900298 JB |
1009 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
1010 | const size_t supp_rates_len, | |
1011 | const u8 *supp_rates) | |
1012 | { | |
55de908a | 1013 | struct ieee80211_chanctx_conf *chanctx_conf; |
46900298 JB |
1014 | int i, have_higher_than_11mbit = 0; |
1015 | ||
1016 | /* cf. IEEE 802.11 9.2.12 */ | |
1017 | for (i = 0; i < supp_rates_len; i++) | |
1018 | if ((supp_rates[i] & 0x7f) * 5 > 110) | |
1019 | have_higher_than_11mbit = 1; | |
1020 | ||
55de908a JB |
1021 | rcu_read_lock(); |
1022 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1023 | ||
1024 | if (chanctx_conf && | |
4bf88530 | 1025 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ && |
46900298 JB |
1026 | have_higher_than_11mbit) |
1027 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1028 | else | |
1029 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
55de908a | 1030 | rcu_read_unlock(); |
46900298 | 1031 | |
3abead59 | 1032 | ieee80211_set_wmm_default(sdata, true); |
46900298 JB |
1033 | } |
1034 | ||
881d948c | 1035 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, |
96dd22ac JB |
1036 | enum ieee80211_band band) |
1037 | { | |
1038 | struct ieee80211_supported_band *sband; | |
1039 | struct ieee80211_rate *bitrates; | |
881d948c | 1040 | u32 mandatory_rates; |
96dd22ac JB |
1041 | enum ieee80211_rate_flags mandatory_flag; |
1042 | int i; | |
1043 | ||
1044 | sband = local->hw.wiphy->bands[band]; | |
4ee73f33 MK |
1045 | if (WARN_ON(!sband)) |
1046 | return 1; | |
96dd22ac JB |
1047 | |
1048 | if (band == IEEE80211_BAND_2GHZ) | |
1049 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; | |
1050 | else | |
1051 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; | |
1052 | ||
1053 | bitrates = sband->bitrates; | |
1054 | mandatory_rates = 0; | |
1055 | for (i = 0; i < sband->n_bitrates; i++) | |
1056 | if (bitrates[i].flags & mandatory_flag) | |
1057 | mandatory_rates |= BIT(i); | |
1058 | return mandatory_rates; | |
1059 | } | |
46900298 JB |
1060 | |
1061 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
700e8ea6 | 1062 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1063 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1064 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1065 | u32 tx_flags) | |
46900298 JB |
1066 | { |
1067 | struct ieee80211_local *local = sdata->local; | |
1068 | struct sk_buff *skb; | |
1069 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1070 | int err; |
46900298 JB |
1071 | |
1072 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
65fc73ac | 1073 | sizeof(*mgmt) + 6 + extra_len); |
d15b8459 | 1074 | if (!skb) |
46900298 | 1075 | return; |
d15b8459 | 1076 | |
46900298 JB |
1077 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1078 | ||
1079 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1080 | memset(mgmt, 0, 24 + 6); | |
1081 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1082 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1083 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1084 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1085 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1086 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1087 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1088 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1089 | if (extra) |
1090 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1091 | |
fffd0934 JB |
1092 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1093 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1094 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1095 | WARN_ON(err); | |
1096 | } | |
1097 | ||
1672c0e3 JB |
1098 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1099 | tx_flags; | |
62ae67be | 1100 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1101 | } |
1102 | ||
6ae16775 AQ |
1103 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1104 | const u8 *bssid, u16 stype, u16 reason, | |
1105 | bool send_frame, u8 *frame_buf) | |
1106 | { | |
1107 | struct ieee80211_local *local = sdata->local; | |
1108 | struct sk_buff *skb; | |
1109 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1110 | ||
1111 | /* build frame */ | |
1112 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1113 | mgmt->duration = 0; /* initialize only */ | |
1114 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1115 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1116 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1117 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1118 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1119 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1120 | ||
1121 | if (send_frame) { | |
1122 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1123 | IEEE80211_DEAUTH_FRAME_LEN); | |
1124 | if (!skb) | |
1125 | return; | |
1126 | ||
1127 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1128 | ||
1129 | /* copy in frame */ | |
1130 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1131 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1132 | ||
1133 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1134 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1135 | IEEE80211_SKB_CB(skb)->flags |= | |
1136 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1137 | ||
1138 | ieee80211_tx_skb(sdata, skb); | |
1139 | } | |
1140 | } | |
1141 | ||
de95a54b | 1142 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
c604b9f2 | 1143 | size_t buffer_len, const u8 *ie, size_t ie_len, |
651b5225 JM |
1144 | enum ieee80211_band band, u32 rate_mask, |
1145 | u8 channel) | |
de95a54b JB |
1146 | { |
1147 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1148 | u8 *pos = buffer, *end = buffer + buffer_len; |
8e664fb3 JB |
1149 | size_t offset = 0, noffset; |
1150 | int supp_rates_len, i; | |
8dcb2003 JM |
1151 | u8 rates[32]; |
1152 | int num_rates; | |
1153 | int ext_rates_len; | |
de95a54b | 1154 | |
4d36ec58 | 1155 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1156 | if (WARN_ON_ONCE(!sband)) |
1157 | return 0; | |
de95a54b | 1158 | |
8dcb2003 JM |
1159 | num_rates = 0; |
1160 | for (i = 0; i < sband->n_bitrates; i++) { | |
1161 | if ((BIT(i) & rate_mask) == 0) | |
1162 | continue; /* skip rate */ | |
1163 | rates[num_rates++] = (u8) (sband->bitrates[i].bitrate / 5); | |
1164 | } | |
1165 | ||
1166 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1167 | |
c604b9f2 JB |
1168 | if (end - pos < 2 + supp_rates_len) |
1169 | goto out_err; | |
de95a54b | 1170 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1171 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1172 | memcpy(pos, rates, supp_rates_len); |
1173 | pos += supp_rates_len; | |
8e664fb3 JB |
1174 | |
1175 | /* insert "request information" if in custom IEs */ | |
1176 | if (ie && ie_len) { | |
1177 | static const u8 before_extrates[] = { | |
1178 | WLAN_EID_SSID, | |
1179 | WLAN_EID_SUPP_RATES, | |
1180 | WLAN_EID_REQUEST, | |
1181 | }; | |
1182 | noffset = ieee80211_ie_split(ie, ie_len, | |
1183 | before_extrates, | |
1184 | ARRAY_SIZE(before_extrates), | |
1185 | offset); | |
c604b9f2 JB |
1186 | if (end - pos < noffset - offset) |
1187 | goto out_err; | |
8e664fb3 JB |
1188 | memcpy(pos, ie + offset, noffset - offset); |
1189 | pos += noffset - offset; | |
1190 | offset = noffset; | |
1191 | } | |
1192 | ||
8dcb2003 JM |
1193 | ext_rates_len = num_rates - supp_rates_len; |
1194 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1195 | if (end - pos < 2 + ext_rates_len) |
1196 | goto out_err; | |
8e664fb3 | 1197 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1198 | *pos++ = ext_rates_len; |
1199 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1200 | pos += ext_rates_len; | |
8e664fb3 JB |
1201 | } |
1202 | ||
651b5225 | 1203 | if (channel && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1204 | if (end - pos < 3) |
1205 | goto out_err; | |
651b5225 JM |
1206 | *pos++ = WLAN_EID_DS_PARAMS; |
1207 | *pos++ = 1; | |
1208 | *pos++ = channel; | |
1209 | } | |
1210 | ||
8e664fb3 JB |
1211 | /* insert custom IEs that go before HT */ |
1212 | if (ie && ie_len) { | |
1213 | static const u8 before_ht[] = { | |
1214 | WLAN_EID_SSID, | |
1215 | WLAN_EID_SUPP_RATES, | |
1216 | WLAN_EID_REQUEST, | |
1217 | WLAN_EID_EXT_SUPP_RATES, | |
1218 | WLAN_EID_DS_PARAMS, | |
1219 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1220 | }; | |
1221 | noffset = ieee80211_ie_split(ie, ie_len, | |
1222 | before_ht, ARRAY_SIZE(before_ht), | |
1223 | offset); | |
c604b9f2 JB |
1224 | if (end - pos < noffset - offset) |
1225 | goto out_err; | |
8e664fb3 JB |
1226 | memcpy(pos, ie + offset, noffset - offset); |
1227 | pos += noffset - offset; | |
1228 | offset = noffset; | |
de95a54b JB |
1229 | } |
1230 | ||
c604b9f2 JB |
1231 | if (sband->ht_cap.ht_supported) { |
1232 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1233 | goto out_err; | |
ef96a842 BG |
1234 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1235 | sband->ht_cap.cap); | |
c604b9f2 | 1236 | } |
5ef2d41a | 1237 | |
de95a54b JB |
1238 | /* |
1239 | * If adding more here, adjust code in main.c | |
1240 | * that calculates local->scan_ies_len. | |
1241 | */ | |
1242 | ||
8e664fb3 JB |
1243 | /* add any remaining custom IEs */ |
1244 | if (ie && ie_len) { | |
1245 | noffset = ie_len; | |
c604b9f2 JB |
1246 | if (end - pos < noffset - offset) |
1247 | goto out_err; | |
8e664fb3 JB |
1248 | memcpy(pos, ie + offset, noffset - offset); |
1249 | pos += noffset - offset; | |
de95a54b JB |
1250 | } |
1251 | ||
c604b9f2 JB |
1252 | if (sband->vht_cap.vht_supported) { |
1253 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) | |
1254 | goto out_err; | |
ba0afa2f MP |
1255 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1256 | sband->vht_cap.cap); | |
c604b9f2 | 1257 | } |
ba0afa2f | 1258 | |
c604b9f2 JB |
1259 | return pos - buffer; |
1260 | out_err: | |
1261 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1262 | return pos - buffer; |
1263 | } | |
1264 | ||
a619a4c0 | 1265 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
85a237fe | 1266 | u8 *dst, u32 ratemask, |
6b77863b | 1267 | struct ieee80211_channel *chan, |
a619a4c0 | 1268 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1269 | const u8 *ie, size_t ie_len, |
1270 | bool directed) | |
46900298 JB |
1271 | { |
1272 | struct ieee80211_local *local = sdata->local; | |
46900298 JB |
1273 | struct sk_buff *skb; |
1274 | struct ieee80211_mgmt *mgmt; | |
6b77863b | 1275 | u8 chan_no; |
b9a9ada1 | 1276 | int ies_len; |
46900298 | 1277 | |
a806c558 PS |
1278 | /* |
1279 | * Do not send DS Channel parameter for directed probe requests | |
1280 | * in order to maximize the chance that we get a response. Some | |
1281 | * badly-behaved APs don't respond when this parameter is included. | |
1282 | */ | |
1283 | if (directed) | |
6b77863b | 1284 | chan_no = 0; |
a806c558 | 1285 | else |
6b77863b | 1286 | chan_no = ieee80211_frequency_to_channel(chan->center_freq); |
651b5225 | 1287 | |
7c12ce8b | 1288 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
b9a9ada1 | 1289 | ssid, ssid_len, 100 + ie_len); |
5b2bbf75 | 1290 | if (!skb) |
b9a9ada1 JB |
1291 | return NULL; |
1292 | ||
1293 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), | |
1294 | skb_tailroom(skb), | |
1295 | ie, ie_len, chan->band, | |
1296 | ratemask, chan_no); | |
1297 | skb_put(skb, ies_len); | |
7c12ce8b | 1298 | |
46900298 | 1299 | if (dst) { |
7c12ce8b | 1300 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1301 | memcpy(mgmt->da, dst, ETH_ALEN); |
1302 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1303 | } |
46900298 | 1304 | |
62ae67be | 1305 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1306 | |
a619a4c0 JO |
1307 | return skb; |
1308 | } | |
1309 | ||
1310 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1311 | const u8 *ssid, size_t ssid_len, | |
a806c558 | 1312 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1313 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1314 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1315 | { |
1316 | struct sk_buff *skb; | |
1317 | ||
fe94fe05 | 1318 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
6b77863b | 1319 | ssid, ssid_len, |
85a237fe | 1320 | ie, ie_len, directed); |
aad14ceb | 1321 | if (skb) { |
1672c0e3 | 1322 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1323 | if (scan) |
1324 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1325 | else | |
1326 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1327 | } |
46900298 JB |
1328 | } |
1329 | ||
1330 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, | |
1331 | struct ieee802_11_elems *elems, | |
9ebb61a2 | 1332 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1333 | { |
1334 | struct ieee80211_supported_band *sband; | |
1335 | struct ieee80211_rate *bitrates; | |
1336 | size_t num_rates; | |
1337 | u32 supp_rates; | |
1338 | int i, j; | |
1339 | sband = local->hw.wiphy->bands[band]; | |
1340 | ||
4ee73f33 MK |
1341 | if (WARN_ON(!sband)) |
1342 | return 1; | |
46900298 JB |
1343 | |
1344 | bitrates = sband->bitrates; | |
1345 | num_rates = sband->n_bitrates; | |
1346 | supp_rates = 0; | |
1347 | for (i = 0; i < elems->supp_rates_len + | |
1348 | elems->ext_supp_rates_len; i++) { | |
1349 | u8 rate = 0; | |
1350 | int own_rate; | |
9ebb61a2 | 1351 | bool is_basic; |
46900298 JB |
1352 | if (i < elems->supp_rates_len) |
1353 | rate = elems->supp_rates[i]; | |
1354 | else if (elems->ext_supp_rates) | |
1355 | rate = elems->ext_supp_rates | |
1356 | [i - elems->supp_rates_len]; | |
1357 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1358 | is_basic = !!(rate & 0x80); |
1359 | ||
1360 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1361 | continue; | |
1362 | ||
1363 | for (j = 0; j < num_rates; j++) { | |
1364 | if (bitrates[j].bitrate == own_rate) { | |
46900298 | 1365 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1366 | if (basic_rates && is_basic) |
1367 | *basic_rates |= BIT(j); | |
1368 | } | |
1369 | } | |
46900298 JB |
1370 | } |
1371 | return supp_rates; | |
1372 | } | |
f2753ddb | 1373 | |
84f6a01c JB |
1374 | void ieee80211_stop_device(struct ieee80211_local *local) |
1375 | { | |
1376 | ieee80211_led_radio(local, false); | |
67408c8c | 1377 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1378 | |
1379 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1380 | |
1381 | flush_workqueue(local->workqueue); | |
678f415f | 1382 | drv_stop(local); |
84f6a01c JB |
1383 | } |
1384 | ||
153a5fc4 SG |
1385 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1386 | struct ieee80211_sub_if_data *sdata) | |
1387 | { | |
1388 | struct ieee80211_chanctx_conf *conf; | |
1389 | struct ieee80211_chanctx *ctx; | |
1390 | ||
1391 | if (!local->use_chanctx) | |
1392 | return; | |
1393 | ||
1394 | mutex_lock(&local->chanctx_mtx); | |
1395 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1396 | lockdep_is_held(&local->chanctx_mtx)); | |
1397 | if (conf) { | |
1398 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1399 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1400 | } | |
1401 | mutex_unlock(&local->chanctx_mtx); | |
1402 | } | |
1403 | ||
f2753ddb JB |
1404 | int ieee80211_reconfig(struct ieee80211_local *local) |
1405 | { | |
1406 | struct ieee80211_hw *hw = &local->hw; | |
1407 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1408 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1409 | struct sta_info *sta; |
2683d65b | 1410 | int res, i; |
d888130a JB |
1411 | bool reconfig_due_to_wowlan = false; |
1412 | ||
8f21b0ad | 1413 | #ifdef CONFIG_PM |
ceb99fe0 JB |
1414 | if (local->suspended) |
1415 | local->resuming = true; | |
f2753ddb | 1416 | |
eecc4800 JB |
1417 | if (local->wowlan) { |
1418 | local->wowlan = false; | |
1419 | res = drv_resume(local); | |
1420 | if (res < 0) { | |
1421 | local->resuming = false; | |
1422 | return res; | |
1423 | } | |
1424 | if (res == 0) | |
1425 | goto wake_up; | |
1426 | WARN_ON(res > 1); | |
1427 | /* | |
1428 | * res is 1, which means the driver requested | |
1429 | * to go through a regular reset on wakeup. | |
1430 | */ | |
d888130a | 1431 | reconfig_due_to_wowlan = true; |
eecc4800 JB |
1432 | } |
1433 | #endif | |
94f9b97b JB |
1434 | /* everything else happens only if HW was up & running */ |
1435 | if (!local->open_count) | |
1436 | goto wake_up; | |
f2753ddb | 1437 | |
94f9b97b JB |
1438 | /* |
1439 | * Upon resume hardware can sometimes be goofy due to | |
1440 | * various platform / driver / bus issues, so restarting | |
1441 | * the device may at times not work immediately. Propagate | |
1442 | * the error. | |
1443 | */ | |
1444 | res = drv_start(local); | |
1445 | if (res) { | |
1446 | WARN(local->suspended, "Hardware became unavailable " | |
1447 | "upon resume. This could be a software issue " | |
1448 | "prior to suspend or a hardware issue.\n"); | |
1449 | return res; | |
f2753ddb JB |
1450 | } |
1451 | ||
7f281975 YAP |
1452 | /* setup fragmentation threshold */ |
1453 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1454 | ||
1455 | /* setup RTS threshold */ | |
1456 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1457 | ||
1458 | /* reset coverage class */ | |
1459 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1460 | ||
94f9b97b JB |
1461 | ieee80211_led_radio(local, true); |
1462 | ieee80211_mod_tpt_led_trig(local, | |
1463 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1464 | ||
f2753ddb | 1465 | /* add interfaces */ |
4b6f1dd6 JB |
1466 | sdata = rtnl_dereference(local->monitor_sdata); |
1467 | if (sdata) { | |
1468 | res = drv_add_interface(local, sdata); | |
1469 | if (WARN_ON(res)) { | |
1470 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
1471 | synchronize_net(); | |
1472 | kfree(sdata); | |
1473 | } | |
1474 | } | |
1475 | ||
f2753ddb JB |
1476 | list_for_each_entry(sdata, &local->interfaces, list) { |
1477 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1478 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1ed32e4f | 1479 | ieee80211_sdata_running(sdata)) |
7b7eab6f | 1480 | res = drv_add_interface(local, sdata); |
f2753ddb JB |
1481 | } |
1482 | ||
55de908a | 1483 | /* add channel contexts */ |
f0dea9c7 AS |
1484 | if (local->use_chanctx) { |
1485 | mutex_lock(&local->chanctx_mtx); | |
1486 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1487 | WARN_ON(drv_add_chanctx(local, ctx)); | |
1488 | mutex_unlock(&local->chanctx_mtx); | |
1489 | } | |
55de908a | 1490 | |
6352c87f | 1491 | list_for_each_entry(sdata, &local->interfaces, list) { |
6352c87f JB |
1492 | if (!ieee80211_sdata_running(sdata)) |
1493 | continue; | |
153a5fc4 | 1494 | ieee80211_assign_chanctx(local, sdata); |
6352c87f JB |
1495 | } |
1496 | ||
fe5f2559 | 1497 | sdata = rtnl_dereference(local->monitor_sdata); |
153a5fc4 SG |
1498 | if (sdata && ieee80211_sdata_running(sdata)) |
1499 | ieee80211_assign_chanctx(local, sdata); | |
fe5f2559 | 1500 | |
f2753ddb | 1501 | /* add STAs back */ |
34e89507 JB |
1502 | mutex_lock(&local->sta_mtx); |
1503 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1504 | enum ieee80211_sta_state state; |
f09603a2 | 1505 | |
2e8d397e AN |
1506 | if (!sta->uploaded) |
1507 | continue; | |
1508 | ||
1509 | /* AP-mode stations will be added later */ | |
1510 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1511 | continue; | |
1512 | ||
1513 | for (state = IEEE80211_STA_NOTEXIST; | |
1514 | state < sta->sta_state; state++) | |
1515 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1516 | state + 1)); | |
f2753ddb | 1517 | } |
34e89507 | 1518 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1519 | |
2683d65b | 1520 | /* reconfigure tx conf */ |
54bcbc69 JB |
1521 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1522 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1523 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1524 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1525 | !ieee80211_sdata_running(sdata)) | |
1526 | continue; | |
f6f3def3 | 1527 | |
54bcbc69 JB |
1528 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1529 | drv_conf_tx(local, sdata, i, | |
1530 | &sdata->tx_conf[i]); | |
1531 | } | |
f6f3def3 | 1532 | } |
2683d65b | 1533 | |
f2753ddb JB |
1534 | /* reconfigure hardware */ |
1535 | ieee80211_hw_config(local, ~0); | |
1536 | ||
f2753ddb | 1537 | ieee80211_configure_filter(local); |
f2753ddb JB |
1538 | |
1539 | /* Finally also reconfigure all the BSS information */ | |
1540 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1541 | u32 changed; |
1542 | ||
9607e6b6 | 1543 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1544 | continue; |
ac8dd506 JB |
1545 | |
1546 | /* common change flags for all interface types */ | |
1547 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1548 | BSS_CHANGED_ERP_PREAMBLE | | |
1549 | BSS_CHANGED_ERP_SLOT | | |
1550 | BSS_CHANGED_HT | | |
1551 | BSS_CHANGED_BASIC_RATES | | |
1552 | BSS_CHANGED_BEACON_INT | | |
1553 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1554 | BSS_CHANGED_CQM | |
55de47f6 | 1555 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1556 | BSS_CHANGED_IDLE | |
1557 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1558 | |
f2753ddb JB |
1559 | switch (sdata->vif.type) { |
1560 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1561 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1562 | BSS_CHANGED_ARP_FILTER | |
1563 | BSS_CHANGED_PS; | |
c65dd147 EG |
1564 | |
1565 | if (sdata->u.mgd.dtim_period) | |
1566 | changed |= BSS_CHANGED_DTIM_PERIOD; | |
1567 | ||
a7b545f7 | 1568 | mutex_lock(&sdata->u.mgd.mtx); |
ac8dd506 | 1569 | ieee80211_bss_info_change_notify(sdata, changed); |
a7b545f7 | 1570 | mutex_unlock(&sdata->u.mgd.mtx); |
ac8dd506 | 1571 | break; |
f2753ddb | 1572 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1573 | changed |= BSS_CHANGED_IBSS; |
1574 | /* fall through */ | |
f2753ddb | 1575 | case NL80211_IFTYPE_AP: |
339afbf4 | 1576 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1577 | |
1041638f | 1578 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1579 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1580 | ||
1041638f JB |
1581 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1582 | drv_start_ap(local, sdata); | |
1583 | } | |
1584 | ||
7827493b | 1585 | /* fall through */ |
f2753ddb | 1586 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1587 | if (sdata->vif.bss_conf.enable_beacon) { |
1588 | changed |= BSS_CHANGED_BEACON | | |
1589 | BSS_CHANGED_BEACON_ENABLED; | |
1590 | ieee80211_bss_info_change_notify(sdata, changed); | |
1591 | } | |
f2753ddb JB |
1592 | break; |
1593 | case NL80211_IFTYPE_WDS: | |
1594 | break; | |
1595 | case NL80211_IFTYPE_AP_VLAN: | |
1596 | case NL80211_IFTYPE_MONITOR: | |
1597 | /* ignore virtual */ | |
1598 | break; | |
98104fde | 1599 | case NL80211_IFTYPE_P2P_DEVICE: |
f142c6b9 JB |
1600 | changed = BSS_CHANGED_IDLE; |
1601 | break; | |
f2753ddb | 1602 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1603 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1604 | case NL80211_IFTYPE_P2P_CLIENT: |
1605 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1606 | WARN_ON(1); |
1607 | break; | |
1608 | } | |
1609 | } | |
1610 | ||
8e1b23b9 ES |
1611 | ieee80211_recalc_ps(local, -1); |
1612 | ||
6e1b1b24 EP |
1613 | /* |
1614 | * The sta might be in psm against the ap (e.g. because | |
1615 | * this was the state before a hw restart), so we | |
1616 | * explicitly send a null packet in order to make sure | |
1617 | * it'll sync against the ap (and get out of psm). | |
1618 | */ | |
1619 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1620 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1621 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1622 | continue; | |
20f544ee JB |
1623 | if (!sdata->u.mgd.associated) |
1624 | continue; | |
6e1b1b24 EP |
1625 | |
1626 | ieee80211_send_nullfunc(local, sdata, 0); | |
1627 | } | |
1628 | } | |
1629 | ||
2e8d397e AN |
1630 | /* APs are now beaconing, add back stations */ |
1631 | mutex_lock(&local->sta_mtx); | |
1632 | list_for_each_entry(sta, &local->sta_list, list) { | |
1633 | enum ieee80211_sta_state state; | |
1634 | ||
1635 | if (!sta->uploaded) | |
1636 | continue; | |
1637 | ||
1638 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1639 | continue; | |
1640 | ||
1641 | for (state = IEEE80211_STA_NOTEXIST; | |
1642 | state < sta->sta_state; state++) | |
1643 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1644 | state + 1)); | |
1645 | } | |
1646 | mutex_unlock(&local->sta_mtx); | |
1647 | ||
7b21aea0 ES |
1648 | /* add back keys */ |
1649 | list_for_each_entry(sdata, &local->interfaces, list) | |
1650 | if (ieee80211_sdata_running(sdata)) | |
1651 | ieee80211_enable_keys(sdata); | |
1652 | ||
c6209488 | 1653 | wake_up: |
04800ada AN |
1654 | local->in_reconfig = false; |
1655 | barrier(); | |
1656 | ||
2a419056 JB |
1657 | /* |
1658 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
1659 | * sessions can be established after a resume. | |
1660 | * | |
1661 | * Also tear down aggregation sessions since reconfiguring | |
1662 | * them in a hardware restart scenario is not easily done | |
1663 | * right now, and the hardware will have lost information | |
1664 | * about the sessions, but we and the AP still think they | |
1665 | * are active. This is really a workaround though. | |
1666 | */ | |
74e2bd1f | 1667 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
2a419056 JB |
1668 | mutex_lock(&local->sta_mtx); |
1669 | ||
1670 | list_for_each_entry(sta, &local->sta_list, list) { | |
c82c4a80 JB |
1671 | ieee80211_sta_tear_down_BA_sessions( |
1672 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 1673 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 1674 | } |
2a419056 JB |
1675 | |
1676 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 1677 | } |
74e2bd1f | 1678 | |
f2753ddb JB |
1679 | ieee80211_wake_queues_by_reason(hw, |
1680 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
1681 | ||
5bb644a0 JB |
1682 | /* |
1683 | * If this is for hw restart things are still running. | |
1684 | * We may want to change that later, however. | |
1685 | */ | |
8f21b0ad | 1686 | if (!local->suspended || reconfig_due_to_wowlan) |
9214ad7f | 1687 | drv_restart_complete(local); |
8f21b0ad JB |
1688 | |
1689 | if (!local->suspended) | |
5bb644a0 JB |
1690 | return 0; |
1691 | ||
1692 | #ifdef CONFIG_PM | |
ceb99fe0 | 1693 | /* first set suspended false, then resuming */ |
5bb644a0 | 1694 | local->suspended = false; |
ceb99fe0 JB |
1695 | mb(); |
1696 | local->resuming = false; | |
5bb644a0 | 1697 | |
26d59535 | 1698 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
1699 | #else |
1700 | WARN_ON(1); | |
1701 | #endif | |
f2753ddb JB |
1702 | return 0; |
1703 | } | |
42935eca | 1704 | |
95acac61 JB |
1705 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
1706 | { | |
1707 | struct ieee80211_sub_if_data *sdata; | |
1708 | struct ieee80211_local *local; | |
1709 | struct ieee80211_key *key; | |
1710 | ||
1711 | if (WARN_ON(!vif)) | |
1712 | return; | |
1713 | ||
1714 | sdata = vif_to_sdata(vif); | |
1715 | local = sdata->local; | |
1716 | ||
1717 | if (WARN_ON(!local->resuming)) | |
1718 | return; | |
1719 | ||
1720 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
1721 | return; | |
1722 | ||
1723 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
1724 | ||
1725 | mutex_lock(&local->key_mtx); | |
1726 | list_for_each_entry(key, &sdata->key_list, list) | |
1727 | key->flags |= KEY_FLAG_TAINTED; | |
1728 | mutex_unlock(&local->key_mtx); | |
1729 | } | |
1730 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
1731 | ||
04ecd257 | 1732 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 1733 | { |
04ecd257 JB |
1734 | struct ieee80211_local *local = sdata->local; |
1735 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1736 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 1737 | |
04ecd257 | 1738 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 1739 | |
04ecd257 JB |
1740 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1741 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 1742 | |
04ecd257 | 1743 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 1744 | goto unlock; |
0f78231b | 1745 | |
04ecd257 JB |
1746 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
1747 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 1748 | unlock: |
04ecd257 | 1749 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 1750 | } |
8e664fb3 JB |
1751 | |
1752 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) | |
1753 | { | |
1754 | int i; | |
1755 | ||
1756 | for (i = 0; i < n_ids; i++) | |
1757 | if (ids[i] == id) | |
1758 | return true; | |
1759 | return false; | |
1760 | } | |
1761 | ||
1762 | /** | |
1763 | * ieee80211_ie_split - split an IE buffer according to ordering | |
1764 | * | |
1765 | * @ies: the IE buffer | |
1766 | * @ielen: the length of the IE buffer | |
1767 | * @ids: an array with element IDs that are allowed before | |
1768 | * the split | |
1769 | * @n_ids: the size of the element ID array | |
1770 | * @offset: offset where to start splitting in the buffer | |
1771 | * | |
1772 | * This function splits an IE buffer by updating the @offset | |
1773 | * variable to point to the location where the buffer should be | |
1774 | * split. | |
1775 | * | |
1776 | * It assumes that the given IE buffer is well-formed, this | |
1777 | * has to be guaranteed by the caller! | |
1778 | * | |
1779 | * It also assumes that the IEs in the buffer are ordered | |
1780 | * correctly, if not the result of using this function will not | |
1781 | * be ordered correctly either, i.e. it does no reordering. | |
1782 | * | |
1783 | * The function returns the offset where the next part of the | |
1784 | * buffer starts, which may be @ielen if the entire (remainder) | |
1785 | * of the buffer should be used. | |
1786 | */ | |
1787 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1788 | const u8 *ids, int n_ids, size_t offset) | |
1789 | { | |
1790 | size_t pos = offset; | |
1791 | ||
1792 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) | |
1793 | pos += 2 + ies[pos + 1]; | |
1794 | ||
1795 | return pos; | |
1796 | } | |
1797 | ||
1798 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) | |
1799 | { | |
1800 | size_t pos = offset; | |
1801 | ||
1802 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
1803 | pos += 2 + ies[pos + 1]; | |
1804 | ||
1805 | return pos; | |
1806 | } | |
615f7b9b MV |
1807 | |
1808 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
1809 | int rssi_min_thold, | |
1810 | int rssi_max_thold) | |
1811 | { | |
1812 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
1813 | ||
1814 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1815 | return; | |
1816 | ||
1817 | /* | |
1818 | * Scale up threshold values before storing it, as the RSSI averaging | |
1819 | * algorithm uses a scaled up value as well. Change this scaling | |
1820 | * factor if the RSSI averaging algorithm changes. | |
1821 | */ | |
1822 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
1823 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
1824 | } | |
1825 | ||
1826 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
1827 | int rssi_min_thold, | |
1828 | int rssi_max_thold) | |
1829 | { | |
1830 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1831 | ||
1832 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
1833 | rssi_min_thold > rssi_max_thold); | |
1834 | ||
1835 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
1836 | rssi_max_thold); | |
1837 | } | |
1838 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
1839 | ||
1840 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
1841 | { | |
1842 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1843 | ||
1844 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
1845 | } | |
1846 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 1847 | |
ef96a842 | 1848 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
1849 | u16 cap) |
1850 | { | |
1851 | __le16 tmp; | |
1852 | ||
1853 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
1854 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
1855 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
1856 | ||
1857 | /* capability flags */ | |
1858 | tmp = cpu_to_le16(cap); | |
1859 | memcpy(pos, &tmp, sizeof(u16)); | |
1860 | pos += sizeof(u16); | |
1861 | ||
1862 | /* AMPDU parameters */ | |
ef96a842 BG |
1863 | *pos++ = ht_cap->ampdu_factor | |
1864 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
1865 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
1866 | ||
1867 | /* MCS set */ | |
ef96a842 BG |
1868 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
1869 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
1870 | |
1871 | /* extended capabilities */ | |
1872 | pos += sizeof(__le16); | |
1873 | ||
1874 | /* BF capabilities */ | |
1875 | pos += sizeof(__le32); | |
1876 | ||
1877 | /* antenna selection */ | |
1878 | pos += sizeof(u8); | |
1879 | ||
1880 | return pos; | |
1881 | } | |
1882 | ||
ba0afa2f | 1883 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 1884 | u32 cap) |
ba0afa2f MP |
1885 | { |
1886 | __le32 tmp; | |
1887 | ||
1888 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
1889 | *pos++ = sizeof(struct ieee80211_vht_cap); |
1890 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
1891 | |
1892 | /* capability flags */ | |
1893 | tmp = cpu_to_le32(cap); | |
1894 | memcpy(pos, &tmp, sizeof(u32)); | |
1895 | pos += sizeof(u32); | |
1896 | ||
1897 | /* VHT MCS set */ | |
1898 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
1899 | pos += sizeof(vht_cap->vht_mcs); | |
1900 | ||
1901 | return pos; | |
1902 | } | |
1903 | ||
074d46d1 | 1904 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 1905 | const struct cfg80211_chan_def *chandef, |
431e3154 | 1906 | u16 prot_mode) |
42e7aa77 | 1907 | { |
074d46d1 | 1908 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 1909 | /* Build HT Information */ |
074d46d1 JB |
1910 | *pos++ = WLAN_EID_HT_OPERATION; |
1911 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
1912 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
1913 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
1914 | chandef->chan->center_freq); | |
1915 | switch (chandef->width) { | |
1916 | case NL80211_CHAN_WIDTH_160: | |
1917 | case NL80211_CHAN_WIDTH_80P80: | |
1918 | case NL80211_CHAN_WIDTH_80: | |
1919 | case NL80211_CHAN_WIDTH_40: | |
1920 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
1921 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
1922 | else | |
1923 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 1924 | break; |
42e7aa77 | 1925 | default: |
074d46d1 | 1926 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
1927 | break; |
1928 | } | |
aee286c2 | 1929 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
1930 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
1931 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 1932 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 1933 | |
431e3154 | 1934 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 1935 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
1936 | |
1937 | /* It seems that Basic MCS set and Supported MCS set | |
1938 | are identical for the first 10 bytes */ | |
074d46d1 JB |
1939 | memset(&ht_oper->basic_set, 0, 16); |
1940 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 1941 | |
074d46d1 | 1942 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
1943 | } |
1944 | ||
4bf88530 | 1945 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 1946 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 1947 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
1948 | { |
1949 | enum nl80211_channel_type channel_type; | |
1950 | ||
4bf88530 JB |
1951 | if (!ht_oper) { |
1952 | cfg80211_chandef_create(chandef, control_chan, | |
1953 | NL80211_CHAN_NO_HT); | |
1954 | return; | |
1955 | } | |
42e7aa77 | 1956 | |
074d46d1 | 1957 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
1958 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
1959 | channel_type = NL80211_CHAN_HT20; | |
1960 | break; | |
1961 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
1962 | channel_type = NL80211_CHAN_HT40PLUS; | |
1963 | break; | |
1964 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
1965 | channel_type = NL80211_CHAN_HT40MINUS; | |
1966 | break; | |
1967 | default: | |
1968 | channel_type = NL80211_CHAN_NO_HT; | |
1969 | } | |
1970 | ||
4bf88530 | 1971 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
1972 | } |
1973 | ||
fc8a7321 | 1974 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
1975 | struct sk_buff *skb, bool need_basic, |
1976 | enum ieee80211_band band) | |
768db343 | 1977 | { |
768db343 AN |
1978 | struct ieee80211_local *local = sdata->local; |
1979 | struct ieee80211_supported_band *sband; | |
1980 | int rate; | |
1981 | u8 i, rates, *pos; | |
fc8a7321 | 1982 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
768db343 | 1983 | |
6b77863b | 1984 | sband = local->hw.wiphy->bands[band]; |
768db343 AN |
1985 | rates = sband->n_bitrates; |
1986 | if (rates > 8) | |
1987 | rates = 8; | |
1988 | ||
1989 | if (skb_tailroom(skb) < rates + 2) | |
1990 | return -ENOMEM; | |
1991 | ||
1992 | pos = skb_put(skb, rates + 2); | |
1993 | *pos++ = WLAN_EID_SUPP_RATES; | |
1994 | *pos++ = rates; | |
1995 | for (i = 0; i < rates; i++) { | |
657c3e0c AN |
1996 | u8 basic = 0; |
1997 | if (need_basic && basic_rates & BIT(i)) | |
1998 | basic = 0x80; | |
768db343 | 1999 | rate = sband->bitrates[i].bitrate; |
657c3e0c | 2000 | *pos++ = basic | (u8) (rate / 5); |
768db343 AN |
2001 | } |
2002 | ||
2003 | return 0; | |
2004 | } | |
2005 | ||
fc8a7321 | 2006 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2007 | struct sk_buff *skb, bool need_basic, |
2008 | enum ieee80211_band band) | |
768db343 | 2009 | { |
768db343 AN |
2010 | struct ieee80211_local *local = sdata->local; |
2011 | struct ieee80211_supported_band *sband; | |
2012 | int rate; | |
2013 | u8 i, exrates, *pos; | |
fc8a7321 | 2014 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
768db343 | 2015 | |
6b77863b | 2016 | sband = local->hw.wiphy->bands[band]; |
768db343 AN |
2017 | exrates = sband->n_bitrates; |
2018 | if (exrates > 8) | |
2019 | exrates -= 8; | |
2020 | else | |
2021 | exrates = 0; | |
2022 | ||
2023 | if (skb_tailroom(skb) < exrates + 2) | |
2024 | return -ENOMEM; | |
2025 | ||
2026 | if (exrates) { | |
2027 | pos = skb_put(skb, exrates + 2); | |
2028 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2029 | *pos++ = exrates; | |
2030 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c AN |
2031 | u8 basic = 0; |
2032 | if (need_basic && basic_rates & BIT(i)) | |
2033 | basic = 0x80; | |
768db343 | 2034 | rate = sband->bitrates[i].bitrate; |
657c3e0c | 2035 | *pos++ = basic | (u8) (rate / 5); |
768db343 AN |
2036 | } |
2037 | } | |
2038 | return 0; | |
2039 | } | |
1dae27f8 WYG |
2040 | |
2041 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2042 | { | |
2043 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2044 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2045 | ||
be6bcabc WYG |
2046 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2047 | /* non-managed type inferfaces */ | |
2048 | return 0; | |
2049 | } | |
1dae27f8 WYG |
2050 | return ifmgd->ave_beacon_signal; |
2051 | } | |
0d8a0a17 | 2052 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2053 | |
2054 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2055 | { | |
2056 | if (!mcs) | |
2057 | return 1; | |
2058 | ||
2059 | /* TODO: consider rx_highest */ | |
2060 | ||
2061 | if (mcs->rx_mask[3]) | |
2062 | return 4; | |
2063 | if (mcs->rx_mask[2]) | |
2064 | return 3; | |
2065 | if (mcs->rx_mask[1]) | |
2066 | return 2; | |
2067 | return 1; | |
2068 | } | |
f4bda337 TP |
2069 | |
2070 | /** | |
2071 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2072 | * @local: mac80211 hw info struct | |
2073 | * @status: RX status | |
2074 | * @mpdu_len: total MPDU length (including FCS) | |
2075 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2076 | * | |
2077 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2078 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2079 | * the timestamp to TSF at beginning of MPDU reception. | |
2080 | */ | |
2081 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2082 | struct ieee80211_rx_status *status, | |
2083 | unsigned int mpdu_len, | |
2084 | unsigned int mpdu_offset) | |
2085 | { | |
2086 | u64 ts = status->mactime; | |
2087 | struct rate_info ri; | |
2088 | u16 rate; | |
2089 | ||
2090 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2091 | return 0; | |
2092 | ||
2093 | memset(&ri, 0, sizeof(ri)); | |
2094 | ||
2095 | /* Fill cfg80211 rate info */ | |
2096 | if (status->flag & RX_FLAG_HT) { | |
2097 | ri.mcs = status->rate_idx; | |
2098 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2099 | if (status->flag & RX_FLAG_40MHZ) | |
2100 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2101 | if (status->flag & RX_FLAG_SHORT_GI) | |
2102 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2103 | } else if (status->flag & RX_FLAG_VHT) { |
2104 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2105 | ri.mcs = status->rate_idx; | |
2106 | ri.nss = status->vht_nss; | |
2107 | if (status->flag & RX_FLAG_40MHZ) | |
2108 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2109 | if (status->flag & RX_FLAG_80MHZ) | |
2110 | ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; | |
2111 | if (status->flag & RX_FLAG_80P80MHZ) | |
2112 | ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; | |
2113 | if (status->flag & RX_FLAG_160MHZ) | |
2114 | ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; | |
2115 | if (status->flag & RX_FLAG_SHORT_GI) | |
2116 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2117 | } else { |
2118 | struct ieee80211_supported_band *sband; | |
2119 | ||
2120 | sband = local->hw.wiphy->bands[status->band]; | |
2121 | ri.legacy = sband->bitrates[status->rate_idx].bitrate; | |
2122 | } | |
2123 | ||
2124 | rate = cfg80211_calculate_bitrate(&ri); | |
2125 | ||
2126 | /* rewind from end of MPDU */ | |
2127 | if (status->flag & RX_FLAG_MACTIME_END) | |
2128 | ts -= mpdu_len * 8 * 10 / rate; | |
2129 | ||
2130 | ts += mpdu_offset * 8 * 10 / rate; | |
2131 | ||
2132 | return ts; | |
2133 | } | |
164eb02d SW |
2134 | |
2135 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2136 | { | |
2137 | struct ieee80211_sub_if_data *sdata; | |
2138 | ||
2139 | mutex_lock(&local->iflist_mtx); | |
2140 | list_for_each_entry(sdata, &local->interfaces, list) { | |
2141 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); | |
2142 | ||
2143 | if (sdata->wdev.cac_started) { | |
2144 | ieee80211_vif_release_channel(sdata); | |
2145 | cfg80211_cac_event(sdata->dev, | |
2146 | NL80211_RADAR_CAC_ABORTED, | |
2147 | GFP_KERNEL); | |
2148 | } | |
2149 | } | |
2150 | mutex_unlock(&local->iflist_mtx); | |
2151 | } | |
2152 | ||
2153 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2154 | { | |
2155 | struct ieee80211_local *local = | |
2156 | container_of(work, struct ieee80211_local, radar_detected_work); | |
2157 | struct cfg80211_chan_def chandef; | |
2158 | ||
2159 | ieee80211_dfs_cac_cancel(local); | |
2160 | ||
2161 | if (local->use_chanctx) | |
2162 | /* currently not handled */ | |
2163 | WARN_ON(1); | |
2164 | else { | |
2165 | cfg80211_chandef_create(&chandef, local->hw.conf.channel, | |
2166 | local->hw.conf.channel_type); | |
2167 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2172 | { | |
2173 | struct ieee80211_local *local = hw_to_local(hw); | |
2174 | ||
2175 | trace_api_radar_detected(local); | |
2176 | ||
2177 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2178 | } | |
2179 | EXPORT_SYMBOL(ieee80211_radar_detected); |