]>
Commit | Line | Data |
---|---|---|
c2d1560a JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * utilities for mac80211 | |
12 | */ | |
13 | ||
14 | #include <net/mac80211.h> | |
15 | #include <linux/netdevice.h> | |
bc3b2d7f | 16 | #include <linux/export.h> |
c2d1560a JB |
17 | #include <linux/types.h> |
18 | #include <linux/slab.h> | |
19 | #include <linux/skbuff.h> | |
20 | #include <linux/etherdevice.h> | |
21 | #include <linux/if_arp.h> | |
c2d1560a | 22 | #include <linux/bitmap.h> |
dd76986b | 23 | #include <linux/crc32.h> |
881d966b | 24 | #include <net/net_namespace.h> |
c2d1560a | 25 | #include <net/cfg80211.h> |
dabeb344 | 26 | #include <net/rtnetlink.h> |
c2d1560a JB |
27 | |
28 | #include "ieee80211_i.h" | |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 | 30 | #include "rate.h" |
ee385855 | 31 | #include "mesh.h" |
c2d1560a | 32 | #include "wme.h" |
f2753ddb | 33 | #include "led.h" |
fffd0934 | 34 | #include "wep.h" |
c2d1560a JB |
35 | |
36 | /* privid for wiphys to determine whether they belong to us or not */ | |
37 | void *mac80211_wiphy_privid = &mac80211_wiphy_privid; | |
38 | ||
9a95371a LR |
39 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
40 | { | |
41 | struct ieee80211_local *local; | |
42 | BUG_ON(!wiphy); | |
43 | ||
44 | local = wiphy_priv(wiphy); | |
45 | return &local->hw; | |
46 | } | |
47 | EXPORT_SYMBOL(wiphy_to_ieee80211_hw); | |
c2d1560a | 48 | |
71364716 | 49 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, |
05c914fe | 50 | enum nl80211_iftype type) |
c2d1560a | 51 | { |
a494bb1c | 52 | __le16 fc = hdr->frame_control; |
c2d1560a | 53 | |
98f0b0a3 RR |
54 | /* drop ACK/CTS frames and incorrect hdr len (ctrl) */ |
55 | if (len < 16) | |
c2d1560a JB |
56 | return NULL; |
57 | ||
a494bb1c | 58 | if (ieee80211_is_data(fc)) { |
98f0b0a3 RR |
59 | if (len < 24) /* drop incorrect hdr len (data) */ |
60 | return NULL; | |
a494bb1c HH |
61 | |
62 | if (ieee80211_has_a4(fc)) | |
c2d1560a | 63 | return NULL; |
a494bb1c HH |
64 | if (ieee80211_has_tods(fc)) |
65 | return hdr->addr1; | |
66 | if (ieee80211_has_fromds(fc)) | |
c2d1560a | 67 | return hdr->addr2; |
a494bb1c HH |
68 | |
69 | return hdr->addr3; | |
70 | } | |
71 | ||
72 | if (ieee80211_is_mgmt(fc)) { | |
98f0b0a3 RR |
73 | if (len < 24) /* drop incorrect hdr len (mgmt) */ |
74 | return NULL; | |
c2d1560a | 75 | return hdr->addr3; |
a494bb1c HH |
76 | } |
77 | ||
78 | if (ieee80211_is_ctl(fc)) { | |
79 | if(ieee80211_is_pspoll(fc)) | |
c2d1560a | 80 | return hdr->addr1; |
a494bb1c HH |
81 | |
82 | if (ieee80211_is_back_req(fc)) { | |
71364716 | 83 | switch (type) { |
05c914fe | 84 | case NL80211_IFTYPE_STATION: |
71364716 | 85 | return hdr->addr2; |
05c914fe JB |
86 | case NL80211_IFTYPE_AP: |
87 | case NL80211_IFTYPE_AP_VLAN: | |
71364716 RR |
88 | return hdr->addr1; |
89 | default: | |
a494bb1c | 90 | break; /* fall through to the return */ |
71364716 RR |
91 | } |
92 | } | |
c2d1560a JB |
93 | } |
94 | ||
95 | return NULL; | |
96 | } | |
97 | ||
5cf121c3 | 98 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
c2d1560a | 99 | { |
252b86c4 | 100 | struct sk_buff *skb; |
2de8e0d9 JB |
101 | struct ieee80211_hdr *hdr; |
102 | ||
252b86c4 | 103 | skb_queue_walk(&tx->skbs, skb) { |
2de8e0d9 JB |
104 | hdr = (struct ieee80211_hdr *) skb->data; |
105 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
252b86c4 | 106 | } |
c2d1560a JB |
107 | } |
108 | ||
4ee73f33 | 109 | int ieee80211_frame_duration(enum ieee80211_band band, size_t len, |
438b61b7 SW |
110 | int rate, int erp, int short_preamble, |
111 | int shift) | |
c2d1560a JB |
112 | { |
113 | int dur; | |
114 | ||
115 | /* calculate duration (in microseconds, rounded up to next higher | |
116 | * integer if it includes a fractional microsecond) to send frame of | |
117 | * len bytes (does not include FCS) at the given rate. Duration will | |
118 | * also include SIFS. | |
119 | * | |
120 | * rate is in 100 kbps, so divident is multiplied by 10 in the | |
121 | * DIV_ROUND_UP() operations. | |
438b61b7 SW |
122 | * |
123 | * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and | |
124 | * is assumed to be 0 otherwise. | |
c2d1560a JB |
125 | */ |
126 | ||
4ee73f33 | 127 | if (band == IEEE80211_BAND_5GHZ || erp) { |
c2d1560a JB |
128 | /* |
129 | * OFDM: | |
130 | * | |
131 | * N_DBPS = DATARATE x 4 | |
132 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) | |
133 | * (16 = SIGNAL time, 6 = tail bits) | |
134 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext | |
135 | * | |
136 | * T_SYM = 4 usec | |
438b61b7 | 137 | * 802.11a - 18.5.2: aSIFSTime = 16 usec |
c2d1560a JB |
138 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
139 | * signal ext = 6 usec | |
140 | */ | |
c2d1560a | 141 | dur = 16; /* SIFS + signal ext */ |
438b61b7 SW |
142 | dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ |
143 | dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ | |
438b61b7 SW |
144 | |
145 | /* IEEE 802.11-2012 18.3.2.4: all values above are: | |
146 | * * times 4 for 5 MHz | |
147 | * * times 2 for 10 MHz | |
148 | */ | |
149 | dur *= 1 << shift; | |
2103dec1 SW |
150 | |
151 | /* rates should already consider the channel bandwidth, | |
152 | * don't apply divisor again. | |
153 | */ | |
154 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, | |
155 | 4 * rate); /* T_SYM x N_SYM */ | |
c2d1560a JB |
156 | } else { |
157 | /* | |
158 | * 802.11b or 802.11g with 802.11b compatibility: | |
159 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + | |
160 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. | |
161 | * | |
162 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 | |
163 | * aSIFSTime = 10 usec | |
164 | * aPreambleLength = 144 usec or 72 usec with short preamble | |
165 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble | |
166 | */ | |
167 | dur = 10; /* aSIFSTime = 10 usec */ | |
168 | dur += short_preamble ? (72 + 24) : (144 + 48); | |
169 | ||
170 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); | |
171 | } | |
172 | ||
173 | return dur; | |
174 | } | |
175 | ||
176 | /* Exported duration function for driver use */ | |
32bfd35d JB |
177 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
178 | struct ieee80211_vif *vif, | |
4ee73f33 | 179 | enum ieee80211_band band, |
8318d78a JB |
180 | size_t frame_len, |
181 | struct ieee80211_rate *rate) | |
c2d1560a | 182 | { |
25d834e1 | 183 | struct ieee80211_sub_if_data *sdata; |
c2d1560a | 184 | u16 dur; |
438b61b7 | 185 | int erp, shift = 0; |
25d834e1 | 186 | bool short_preamble = false; |
c2d1560a | 187 | |
8318d78a | 188 | erp = 0; |
25d834e1 JB |
189 | if (vif) { |
190 | sdata = vif_to_sdata(vif); | |
bda3933a | 191 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
192 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
193 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 194 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 195 | } |
8318d78a | 196 | |
4ee73f33 | 197 | dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
438b61b7 | 198 | short_preamble, shift); |
c2d1560a JB |
199 | |
200 | return cpu_to_le16(dur); | |
201 | } | |
202 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); | |
203 | ||
32bfd35d JB |
204 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
205 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 206 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
207 | { |
208 | struct ieee80211_local *local = hw_to_local(hw); | |
209 | struct ieee80211_rate *rate; | |
25d834e1 | 210 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 211 | bool short_preamble; |
2103dec1 | 212 | int erp, shift = 0, bitrate; |
c2d1560a | 213 | u16 dur; |
2e92e6f2 JB |
214 | struct ieee80211_supported_band *sband; |
215 | ||
4ee73f33 | 216 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 217 | |
25d834e1 | 218 | short_preamble = false; |
7e9ed188 | 219 | |
e039fa4a | 220 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a JB |
221 | |
222 | erp = 0; | |
25d834e1 JB |
223 | if (vif) { |
224 | sdata = vif_to_sdata(vif); | |
bda3933a | 225 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
226 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
227 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 228 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 229 | } |
c2d1560a | 230 | |
2103dec1 SW |
231 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
232 | ||
c2d1560a | 233 | /* CTS duration */ |
2103dec1 | 234 | dur = ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 235 | erp, short_preamble, shift); |
c2d1560a | 236 | /* Data frame duration */ |
2103dec1 | 237 | dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 238 | erp, short_preamble, shift); |
c2d1560a | 239 | /* ACK duration */ |
2103dec1 | 240 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 241 | erp, short_preamble, shift); |
c2d1560a JB |
242 | |
243 | return cpu_to_le16(dur); | |
244 | } | |
245 | EXPORT_SYMBOL(ieee80211_rts_duration); | |
246 | ||
32bfd35d JB |
247 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
248 | struct ieee80211_vif *vif, | |
c2d1560a | 249 | size_t frame_len, |
e039fa4a | 250 | const struct ieee80211_tx_info *frame_txctl) |
c2d1560a JB |
251 | { |
252 | struct ieee80211_local *local = hw_to_local(hw); | |
253 | struct ieee80211_rate *rate; | |
25d834e1 | 254 | struct ieee80211_sub_if_data *sdata; |
471b3efd | 255 | bool short_preamble; |
2103dec1 | 256 | int erp, shift = 0, bitrate; |
c2d1560a | 257 | u16 dur; |
2e92e6f2 JB |
258 | struct ieee80211_supported_band *sband; |
259 | ||
4ee73f33 | 260 | sband = local->hw.wiphy->bands[frame_txctl->band]; |
c2d1560a | 261 | |
25d834e1 | 262 | short_preamble = false; |
7e9ed188 | 263 | |
e039fa4a | 264 | rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
8318d78a | 265 | erp = 0; |
25d834e1 JB |
266 | if (vif) { |
267 | sdata = vif_to_sdata(vif); | |
bda3933a | 268 | short_preamble = sdata->vif.bss_conf.use_short_preamble; |
25d834e1 JB |
269 | if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) |
270 | erp = rate->flags & IEEE80211_RATE_ERP_G; | |
438b61b7 | 271 | shift = ieee80211_vif_get_shift(vif); |
25d834e1 | 272 | } |
c2d1560a | 273 | |
2103dec1 SW |
274 | bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
275 | ||
c2d1560a | 276 | /* Data frame duration */ |
2103dec1 | 277 | dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, |
438b61b7 | 278 | erp, short_preamble, shift); |
e039fa4a | 279 | if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
c2d1560a | 280 | /* ACK duration */ |
2103dec1 | 281 | dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
438b61b7 | 282 | erp, short_preamble, shift); |
c2d1560a JB |
283 | } |
284 | ||
285 | return cpu_to_le16(dur); | |
286 | } | |
287 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); | |
288 | ||
3a25a8c8 JB |
289 | void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
290 | { | |
291 | struct ieee80211_sub_if_data *sdata; | |
a6f38ac3 JB |
292 | int n_acs = IEEE80211_NUM_ACS; |
293 | ||
294 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
295 | n_acs = 1; | |
3a25a8c8 JB |
296 | |
297 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
298 | int ac; | |
299 | ||
f142c6b9 JB |
300 | if (!sdata->dev) |
301 | continue; | |
302 | ||
3a25a8c8 JB |
303 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && |
304 | local->queue_stop_reasons[sdata->vif.cab_queue] != 0) | |
305 | continue; | |
306 | ||
a6f38ac3 | 307 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
308 | int ac_queue = sdata->vif.hw_queue[ac]; |
309 | ||
310 | if (ac_queue == queue || | |
311 | (sdata->vif.cab_queue == queue && | |
312 | local->queue_stop_reasons[ac_queue] == 0 && | |
313 | skb_queue_empty(&local->pending[ac_queue]))) | |
314 | netif_wake_subqueue(sdata->dev, ac); | |
315 | } | |
316 | } | |
317 | } | |
318 | ||
ce7c9111 KV |
319 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
320 | enum queue_stop_reason reason) | |
c2d1560a JB |
321 | { |
322 | struct ieee80211_local *local = hw_to_local(hw); | |
323 | ||
b5878a2d JB |
324 | trace_wake_queue(local, queue, reason); |
325 | ||
e4e72fb4 JB |
326 | if (WARN_ON(queue >= hw->queues)) |
327 | return; | |
ce7c9111 | 328 | |
ada15125 JB |
329 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
330 | return; | |
331 | ||
96f5e66e JB |
332 | __clear_bit(reason, &local->queue_stop_reasons[queue]); |
333 | ||
334 | if (local->queue_stop_reasons[queue] != 0) | |
335 | /* someone still has this queue stopped */ | |
336 | return; | |
337 | ||
7236fe29 JB |
338 | if (skb_queue_empty(&local->pending[queue])) { |
339 | rcu_read_lock(); | |
3a25a8c8 | 340 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
341 | rcu_read_unlock(); |
342 | } else | |
3b8d81e0 | 343 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 344 | } |
ce7c9111 | 345 | |
96f5e66e JB |
346 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
347 | enum queue_stop_reason reason) | |
ce7c9111 KV |
348 | { |
349 | struct ieee80211_local *local = hw_to_local(hw); | |
350 | unsigned long flags; | |
351 | ||
352 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
353 | __ieee80211_wake_queue(hw, queue, reason); | |
354 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
355 | } | |
356 | ||
357 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
358 | { | |
359 | ieee80211_wake_queue_by_reason(hw, queue, | |
360 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
361 | } | |
c2d1560a JB |
362 | EXPORT_SYMBOL(ieee80211_wake_queue); |
363 | ||
ce7c9111 KV |
364 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
365 | enum queue_stop_reason reason) | |
c2d1560a JB |
366 | { |
367 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 368 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 369 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 370 | |
b5878a2d JB |
371 | trace_stop_queue(local, queue, reason); |
372 | ||
e4e72fb4 JB |
373 | if (WARN_ON(queue >= hw->queues)) |
374 | return; | |
96f5e66e | 375 | |
ada15125 JB |
376 | if (test_bit(reason, &local->queue_stop_reasons[queue])) |
377 | return; | |
378 | ||
2a577d98 | 379 | __set_bit(reason, &local->queue_stop_reasons[queue]); |
cf0277e7 | 380 | |
a6f38ac3 JB |
381 | if (local->hw.queues < IEEE80211_NUM_ACS) |
382 | n_acs = 1; | |
383 | ||
cf0277e7 | 384 | rcu_read_lock(); |
3a25a8c8 JB |
385 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
386 | int ac; | |
387 | ||
f142c6b9 JB |
388 | if (!sdata->dev) |
389 | continue; | |
390 | ||
a6f38ac3 | 391 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
392 | if (sdata->vif.hw_queue[ac] == queue || |
393 | sdata->vif.cab_queue == queue) | |
394 | netif_stop_subqueue(sdata->dev, ac); | |
395 | } | |
396 | } | |
cf0277e7 | 397 | rcu_read_unlock(); |
c2d1560a | 398 | } |
ce7c9111 | 399 | |
96f5e66e JB |
400 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
401 | enum queue_stop_reason reason) | |
ce7c9111 KV |
402 | { |
403 | struct ieee80211_local *local = hw_to_local(hw); | |
404 | unsigned long flags; | |
405 | ||
406 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
407 | __ieee80211_stop_queue(hw, queue, reason); | |
408 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
409 | } | |
410 | ||
411 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
412 | { | |
413 | ieee80211_stop_queue_by_reason(hw, queue, | |
414 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
415 | } | |
c2d1560a JB |
416 | EXPORT_SYMBOL(ieee80211_stop_queue); |
417 | ||
8f77f384 JB |
418 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
419 | struct sk_buff *skb) | |
420 | { | |
421 | struct ieee80211_hw *hw = &local->hw; | |
422 | unsigned long flags; | |
a7bc376c | 423 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 424 | int queue = info->hw_queue; |
a7bc376c JB |
425 | |
426 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 427 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
428 | return; |
429 | } | |
8f77f384 JB |
430 | |
431 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
432 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
3b8d81e0 | 433 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
434 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD); |
435 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
436 | } | |
437 | ||
b0b97a8a JB |
438 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
439 | struct sk_buff_head *skbs, | |
440 | void (*fn)(void *data), void *data) | |
8f77f384 JB |
441 | { |
442 | struct ieee80211_hw *hw = &local->hw; | |
443 | struct sk_buff *skb; | |
444 | unsigned long flags; | |
b0b97a8a | 445 | int queue, i; |
8f77f384 JB |
446 | |
447 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 448 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
449 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
450 | ||
451 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 452 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
453 | continue; |
454 | } | |
455 | ||
3a25a8c8 | 456 | queue = info->hw_queue; |
4644ae89 JB |
457 | |
458 | __ieee80211_stop_queue(hw, queue, | |
459 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
460 | ||
3b8d81e0 | 461 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
462 | } |
463 | ||
50a9432d JB |
464 | if (fn) |
465 | fn(data); | |
466 | ||
3b8d81e0 | 467 | for (i = 0; i < hw->queues; i++) |
8f77f384 JB |
468 | __ieee80211_wake_queue(hw, i, |
469 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
8f77f384 | 470 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
471 | } |
472 | ||
ce7c9111 | 473 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 JB |
474 | unsigned long queues, |
475 | enum queue_stop_reason reason) | |
c2d1560a | 476 | { |
ce7c9111 KV |
477 | struct ieee80211_local *local = hw_to_local(hw); |
478 | unsigned long flags; | |
c2d1560a JB |
479 | int i; |
480 | ||
ce7c9111 KV |
481 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
482 | ||
445ea4e8 | 483 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
484 | __ieee80211_stop_queue(hw, i, reason); |
485 | ||
486 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
487 | } | |
488 | ||
489 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
490 | { | |
445ea4e8 | 491 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
ce7c9111 | 492 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
c2d1560a JB |
493 | } |
494 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
495 | ||
92ab8535 TW |
496 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
497 | { | |
498 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
499 | unsigned long flags; |
500 | int ret; | |
96f5e66e | 501 | |
e4e72fb4 JB |
502 | if (WARN_ON(queue >= hw->queues)) |
503 | return true; | |
96f5e66e | 504 | |
3b8d81e0 | 505 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
506 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
507 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
508 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
509 | return ret; | |
92ab8535 TW |
510 | } |
511 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
512 | ||
ce7c9111 | 513 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 514 | unsigned long queues, |
ce7c9111 | 515 | enum queue_stop_reason reason) |
c2d1560a | 516 | { |
ce7c9111 KV |
517 | struct ieee80211_local *local = hw_to_local(hw); |
518 | unsigned long flags; | |
c2d1560a JB |
519 | int i; |
520 | ||
ce7c9111 KV |
521 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
522 | ||
445ea4e8 | 523 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
524 | __ieee80211_wake_queue(hw, i, reason); |
525 | ||
526 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
527 | } | |
528 | ||
529 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
530 | { | |
445ea4e8 JB |
531 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
532 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
533 | } |
534 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 535 | |
39ecc01d JB |
536 | void ieee80211_flush_queues(struct ieee80211_local *local, |
537 | struct ieee80211_sub_if_data *sdata) | |
538 | { | |
539 | u32 queues; | |
540 | ||
541 | if (!local->ops->flush) | |
542 | return; | |
543 | ||
544 | if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { | |
545 | int ac; | |
546 | ||
547 | queues = 0; | |
548 | ||
549 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
550 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
551 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
552 | queues |= BIT(sdata->vif.cab_queue); | |
553 | } else { | |
554 | /* all queues */ | |
555 | queues = BIT(local->hw.queues) - 1; | |
556 | } | |
557 | ||
445ea4e8 JB |
558 | ieee80211_stop_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, |
559 | IEEE80211_QUEUE_STOP_REASON_FLUSH); | |
560 | ||
39ecc01d | 561 | drv_flush(local, queues, false); |
445ea4e8 JB |
562 | |
563 | ieee80211_wake_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, | |
564 | IEEE80211_QUEUE_STOP_REASON_FLUSH); | |
39ecc01d JB |
565 | } |
566 | ||
c7c71066 JB |
567 | static void __iterate_active_interfaces(struct ieee80211_local *local, |
568 | u32 iter_flags, | |
569 | void (*iterator)(void *data, u8 *mac, | |
570 | struct ieee80211_vif *vif), | |
571 | void *data) | |
dabeb344 | 572 | { |
dabeb344 JB |
573 | struct ieee80211_sub_if_data *sdata; |
574 | ||
c7c71066 | 575 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 576 | switch (sdata->vif.type) { |
05c914fe | 577 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
578 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
579 | continue; | |
580 | break; | |
05c914fe | 581 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 582 | continue; |
2ca27bcf | 583 | default: |
2f561feb ID |
584 | break; |
585 | } | |
8b2c9824 JB |
586 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
587 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
588 | continue; | |
9607e6b6 | 589 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 590 | iterator(data, sdata->vif.addr, |
2f561feb ID |
591 | &sdata->vif); |
592 | } | |
593 | ||
c7c71066 JB |
594 | sdata = rcu_dereference_check(local->monitor_sdata, |
595 | lockdep_is_held(&local->iflist_mtx) || | |
596 | lockdep_rtnl_is_held()); | |
8b2c9824 JB |
597 | if (sdata && |
598 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
599 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b | 600 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 601 | } |
685fb72b | 602 | |
c7c71066 JB |
603 | void ieee80211_iterate_active_interfaces( |
604 | struct ieee80211_hw *hw, u32 iter_flags, | |
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 | ||
611 | mutex_lock(&local->iflist_mtx); | |
612 | __iterate_active_interfaces(local, iter_flags, iterator, data); | |
c771c9d8 | 613 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
614 | } |
615 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
616 | ||
617 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 618 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
619 | void (*iterator)(void *data, u8 *mac, |
620 | struct ieee80211_vif *vif), | |
621 | void *data) | |
622 | { | |
623 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 624 | |
e38bad47 | 625 | rcu_read_lock(); |
c7c71066 JB |
626 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
627 | rcu_read_unlock(); | |
628 | } | |
629 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 630 | |
c7c71066 JB |
631 | void ieee80211_iterate_active_interfaces_rtnl( |
632 | struct ieee80211_hw *hw, u32 iter_flags, | |
633 | void (*iterator)(void *data, u8 *mac, | |
634 | struct ieee80211_vif *vif), | |
635 | void *data) | |
636 | { | |
637 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 638 | |
c7c71066 | 639 | ASSERT_RTNL(); |
685fb72b | 640 | |
c7c71066 | 641 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
dabeb344 | 642 | } |
c7c71066 | 643 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 644 | |
ad7e718c JB |
645 | struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) |
646 | { | |
647 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
648 | ||
649 | if (!ieee80211_sdata_running(sdata) || | |
650 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
651 | return NULL; | |
652 | return &sdata->vif; | |
653 | } | |
654 | EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); | |
655 | ||
42935eca LR |
656 | /* |
657 | * Nothing should have been stuffed into the workqueue during | |
658 | * the suspend->resume cycle. If this WARN is seen then there | |
659 | * is a bug with either the driver suspend or something in | |
660 | * mac80211 stuffing into the workqueue which we haven't yet | |
661 | * cleared during mac80211's suspend cycle. | |
662 | */ | |
663 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
664 | { | |
ceb99fe0 JB |
665 | if (WARN(local->suspended && !local->resuming, |
666 | "queueing ieee80211 work while going to suspend\n")) | |
667 | return false; | |
42935eca LR |
668 | |
669 | return true; | |
670 | } | |
671 | ||
672 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
673 | { | |
674 | struct ieee80211_local *local = hw_to_local(hw); | |
675 | ||
676 | if (!ieee80211_can_queue_work(local)) | |
677 | return; | |
678 | ||
679 | queue_work(local->workqueue, work); | |
680 | } | |
681 | EXPORT_SYMBOL(ieee80211_queue_work); | |
682 | ||
683 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
684 | struct delayed_work *dwork, | |
685 | unsigned long delay) | |
686 | { | |
687 | struct ieee80211_local *local = hw_to_local(hw); | |
688 | ||
689 | if (!ieee80211_can_queue_work(local)) | |
690 | return; | |
691 | ||
692 | queue_delayed_work(local->workqueue, dwork, delay); | |
693 | } | |
694 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
695 | ||
35d865af | 696 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
697 | struct ieee802_11_elems *elems, |
698 | u64 filter, u32 crc) | |
699 | { | |
700 | size_t left = len; | |
35d865af | 701 | const u8 *pos = start; |
dd76986b | 702 | bool calc_crc = filter != 0; |
fcff4f10 | 703 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 704 | const u8 *ie; |
dd76986b | 705 | |
fcff4f10 | 706 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
707 | memset(elems, 0, sizeof(*elems)); |
708 | elems->ie_start = start; | |
709 | elems->total_len = len; | |
710 | ||
711 | while (left >= 2) { | |
712 | u8 id, elen; | |
fcff4f10 | 713 | bool elem_parse_failed; |
dd76986b JB |
714 | |
715 | id = *pos++; | |
716 | elen = *pos++; | |
717 | left -= 2; | |
718 | ||
fcff4f10 PS |
719 | if (elen > left) { |
720 | elems->parse_error = true; | |
dd76986b | 721 | break; |
fcff4f10 PS |
722 | } |
723 | ||
9690fb16 JB |
724 | switch (id) { |
725 | case WLAN_EID_SSID: | |
726 | case WLAN_EID_SUPP_RATES: | |
727 | case WLAN_EID_FH_PARAMS: | |
728 | case WLAN_EID_DS_PARAMS: | |
729 | case WLAN_EID_CF_PARAMS: | |
730 | case WLAN_EID_TIM: | |
731 | case WLAN_EID_IBSS_PARAMS: | |
732 | case WLAN_EID_CHALLENGE: | |
733 | case WLAN_EID_RSN: | |
734 | case WLAN_EID_ERP_INFO: | |
735 | case WLAN_EID_EXT_SUPP_RATES: | |
736 | case WLAN_EID_HT_CAPABILITY: | |
737 | case WLAN_EID_HT_OPERATION: | |
738 | case WLAN_EID_VHT_CAPABILITY: | |
739 | case WLAN_EID_VHT_OPERATION: | |
740 | case WLAN_EID_MESH_ID: | |
741 | case WLAN_EID_MESH_CONFIG: | |
742 | case WLAN_EID_PEER_MGMT: | |
743 | case WLAN_EID_PREQ: | |
744 | case WLAN_EID_PREP: | |
745 | case WLAN_EID_PERR: | |
746 | case WLAN_EID_RANN: | |
747 | case WLAN_EID_CHANNEL_SWITCH: | |
748 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
749 | case WLAN_EID_COUNTRY: | |
750 | case WLAN_EID_PWR_CONSTRAINT: | |
751 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 752 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf | 753 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
8f2535b9 | 754 | case WLAN_EID_CHAN_SWITCH_PARAM: |
b2e506bf JB |
755 | /* |
756 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
757 | * that if the content gets bigger it might be needed more than once | |
758 | */ | |
9690fb16 JB |
759 | if (test_bit(id, seen_elems)) { |
760 | elems->parse_error = true; | |
761 | left -= elen; | |
762 | pos += elen; | |
763 | continue; | |
764 | } | |
765 | break; | |
fcff4f10 | 766 | } |
dd76986b JB |
767 | |
768 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
769 | crc = crc32_be(crc, pos - 2, elen + 2); | |
770 | ||
fcff4f10 PS |
771 | elem_parse_failed = false; |
772 | ||
dd76986b JB |
773 | switch (id) { |
774 | case WLAN_EID_SSID: | |
775 | elems->ssid = pos; | |
776 | elems->ssid_len = elen; | |
777 | break; | |
778 | case WLAN_EID_SUPP_RATES: | |
779 | elems->supp_rates = pos; | |
780 | elems->supp_rates_len = elen; | |
781 | break; | |
dd76986b | 782 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
783 | if (elen >= 1) |
784 | elems->ds_params = pos; | |
785 | else | |
786 | elem_parse_failed = true; | |
dd76986b | 787 | break; |
dd76986b JB |
788 | case WLAN_EID_TIM: |
789 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
790 | elems->tim = (void *)pos; | |
791 | elems->tim_len = elen; | |
fcff4f10 PS |
792 | } else |
793 | elem_parse_failed = true; | |
dd76986b | 794 | break; |
dd76986b JB |
795 | case WLAN_EID_CHALLENGE: |
796 | elems->challenge = pos; | |
797 | elems->challenge_len = elen; | |
798 | break; | |
799 | case WLAN_EID_VENDOR_SPECIFIC: | |
800 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
801 | pos[2] == 0xf2) { | |
802 | /* Microsoft OUI (00:50:F2) */ | |
803 | ||
804 | if (calc_crc) | |
805 | crc = crc32_be(crc, pos - 2, elen + 2); | |
806 | ||
441a33ba | 807 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
808 | /* OUI Type 2 - WMM IE */ |
809 | if (pos[4] == 0) { | |
810 | elems->wmm_info = pos; | |
811 | elems->wmm_info_len = elen; | |
812 | } else if (pos[4] == 1) { | |
813 | elems->wmm_param = pos; | |
814 | elems->wmm_param_len = elen; | |
815 | } | |
816 | } | |
817 | } | |
818 | break; | |
819 | case WLAN_EID_RSN: | |
820 | elems->rsn = pos; | |
821 | elems->rsn_len = elen; | |
822 | break; | |
823 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
824 | if (elen >= 1) |
825 | elems->erp_info = pos; | |
826 | else | |
827 | elem_parse_failed = true; | |
dd76986b JB |
828 | break; |
829 | case WLAN_EID_EXT_SUPP_RATES: | |
830 | elems->ext_supp_rates = pos; | |
831 | elems->ext_supp_rates_len = elen; | |
832 | break; | |
833 | case WLAN_EID_HT_CAPABILITY: | |
834 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
835 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
836 | else |
837 | elem_parse_failed = true; | |
dd76986b | 838 | break; |
074d46d1 JB |
839 | case WLAN_EID_HT_OPERATION: |
840 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
841 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
842 | else |
843 | elem_parse_failed = true; | |
dd76986b | 844 | break; |
818255ea MP |
845 | case WLAN_EID_VHT_CAPABILITY: |
846 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
847 | elems->vht_cap_elem = (void *)pos; | |
848 | else | |
849 | elem_parse_failed = true; | |
850 | break; | |
851 | case WLAN_EID_VHT_OPERATION: | |
852 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
853 | elems->vht_operation = (void *)pos; | |
854 | else | |
855 | elem_parse_failed = true; | |
856 | break; | |
bee7f586 JB |
857 | case WLAN_EID_OPMODE_NOTIF: |
858 | if (elen > 0) | |
859 | elems->opmode_notif = pos; | |
860 | else | |
861 | elem_parse_failed = true; | |
862 | break; | |
dd76986b JB |
863 | case WLAN_EID_MESH_ID: |
864 | elems->mesh_id = pos; | |
865 | elems->mesh_id_len = elen; | |
866 | break; | |
867 | case WLAN_EID_MESH_CONFIG: | |
868 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
869 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
870 | else |
871 | elem_parse_failed = true; | |
dd76986b JB |
872 | break; |
873 | case WLAN_EID_PEER_MGMT: | |
874 | elems->peering = pos; | |
875 | elems->peering_len = elen; | |
876 | break; | |
3f52b7e3 MP |
877 | case WLAN_EID_MESH_AWAKE_WINDOW: |
878 | if (elen >= 2) | |
879 | elems->awake_window = (void *)pos; | |
880 | break; | |
dd76986b JB |
881 | case WLAN_EID_PREQ: |
882 | elems->preq = pos; | |
883 | elems->preq_len = elen; | |
884 | break; | |
885 | case WLAN_EID_PREP: | |
886 | elems->prep = pos; | |
887 | elems->prep_len = elen; | |
888 | break; | |
889 | case WLAN_EID_PERR: | |
890 | elems->perr = pos; | |
891 | elems->perr_len = elen; | |
892 | break; | |
893 | case WLAN_EID_RANN: | |
894 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
895 | elems->rann = (void *)pos; | |
fcff4f10 PS |
896 | else |
897 | elem_parse_failed = true; | |
dd76986b JB |
898 | break; |
899 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
900 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
901 | elem_parse_failed = true; | |
902 | break; | |
903 | } | |
904 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 905 | break; |
b4f286a1 JB |
906 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
907 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
908 | elem_parse_failed = true; | |
909 | break; | |
910 | } | |
911 | elems->ext_chansw_ie = (void *)pos; | |
912 | break; | |
85220d71 JB |
913 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
914 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
915 | elem_parse_failed = true; | |
916 | break; | |
917 | } | |
918 | elems->sec_chan_offs = (void *)pos; | |
919 | break; | |
8f2535b9 CYY |
920 | case WLAN_EID_CHAN_SWITCH_PARAM: |
921 | if (elen != | |
922 | sizeof(*elems->mesh_chansw_params_ie)) { | |
923 | elem_parse_failed = true; | |
924 | break; | |
925 | } | |
926 | elems->mesh_chansw_params_ie = (void *)pos; | |
927 | break; | |
b2e506bf JB |
928 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
929 | if (!action || | |
930 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
931 | elem_parse_failed = true; | |
932 | break; | |
933 | } | |
934 | elems->wide_bw_chansw_ie = (void *)pos; | |
935 | break; | |
936 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
937 | if (action) { | |
938 | elem_parse_failed = true; | |
939 | break; | |
940 | } | |
941 | /* | |
942 | * This is a bit tricky, but as we only care about | |
943 | * the wide bandwidth channel switch element, so | |
944 | * just parse it out manually. | |
945 | */ | |
946 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
947 | pos, elen); | |
948 | if (ie) { | |
949 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
950 | elems->wide_bw_chansw_ie = | |
951 | (void *)(ie + 2); | |
952 | else | |
953 | elem_parse_failed = true; | |
954 | } | |
955 | break; | |
dd76986b JB |
956 | case WLAN_EID_COUNTRY: |
957 | elems->country_elem = pos; | |
958 | elems->country_elem_len = elen; | |
959 | break; | |
960 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
961 | if (elen != 1) { |
962 | elem_parse_failed = true; | |
963 | break; | |
964 | } | |
dd76986b | 965 | elems->pwr_constr_elem = pos; |
dd76986b JB |
966 | break; |
967 | case WLAN_EID_TIMEOUT_INTERVAL: | |
79ba1d89 JB |
968 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
969 | elems->timeout_int = (void *)pos; | |
970 | else | |
971 | elem_parse_failed = true; | |
dd76986b JB |
972 | break; |
973 | default: | |
974 | break; | |
975 | } | |
976 | ||
fcff4f10 PS |
977 | if (elem_parse_failed) |
978 | elems->parse_error = true; | |
979 | else | |
5df45690 | 980 | __set_bit(id, seen_elems); |
fcff4f10 | 981 | |
dd76986b JB |
982 | left -= elen; |
983 | pos += elen; | |
984 | } | |
985 | ||
fcff4f10 PS |
986 | if (left != 0) |
987 | elems->parse_error = true; | |
988 | ||
dd76986b JB |
989 | return crc; |
990 | } | |
991 | ||
3abead59 JB |
992 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
993 | bool bss_notify) | |
5825fe10 JB |
994 | { |
995 | struct ieee80211_local *local = sdata->local; | |
996 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 997 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 998 | int ac; |
a8ce8544 | 999 | bool use_11b, enable_qos; |
aa837e1d | 1000 | int aCWmin, aCWmax; |
5825fe10 JB |
1001 | |
1002 | if (!local->ops->conf_tx) | |
1003 | return; | |
1004 | ||
54bcbc69 JB |
1005 | if (local->hw.queues < IEEE80211_NUM_ACS) |
1006 | return; | |
1007 | ||
5825fe10 JB |
1008 | memset(&qparam, 0, sizeof(qparam)); |
1009 | ||
55de908a JB |
1010 | rcu_read_lock(); |
1011 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1012 | use_11b = (chanctx_conf && | |
4bf88530 | 1013 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 1014 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 1015 | rcu_read_unlock(); |
5825fe10 | 1016 | |
a8ce8544 SG |
1017 | /* |
1018 | * By default disable QoS in STA mode for old access points, which do | |
1019 | * not support 802.11e. New APs will provide proper queue parameters, | |
1020 | * that we will configure later. | |
1021 | */ | |
1022 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
1023 | ||
1f4ffde8 FZ |
1024 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1025 | aCWmax = 1023; | |
1026 | if (use_11b) | |
1027 | aCWmin = 31; | |
1028 | else | |
1029 | aCWmin = 15; | |
1030 | ||
1031 | /* Confiure old 802.11b/g medium access rules. */ | |
1032 | qparam.cw_max = aCWmax; | |
1033 | qparam.cw_min = aCWmin; | |
1034 | qparam.txop = 0; | |
1035 | qparam.aifs = 2; | |
aa837e1d | 1036 | |
1f4ffde8 FZ |
1037 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1038 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1039 | if (enable_qos) { |
1040 | switch (ac) { | |
1041 | case IEEE80211_AC_BK: | |
1042 | qparam.cw_max = aCWmax; | |
1043 | qparam.cw_min = aCWmin; | |
1044 | qparam.txop = 0; | |
1045 | qparam.aifs = 7; | |
1046 | break; | |
1047 | /* never happens but let's not leave undefined */ | |
1048 | default: | |
1049 | case IEEE80211_AC_BE: | |
1050 | qparam.cw_max = aCWmax; | |
1051 | qparam.cw_min = aCWmin; | |
1052 | qparam.txop = 0; | |
1053 | qparam.aifs = 3; | |
1054 | break; | |
1055 | case IEEE80211_AC_VI: | |
1056 | qparam.cw_max = aCWmin; | |
1057 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
1058 | if (use_11b) | |
1059 | qparam.txop = 6016/32; | |
1060 | else | |
1061 | qparam.txop = 3008/32; | |
1062 | qparam.aifs = 2; | |
1063 | break; | |
1064 | case IEEE80211_AC_VO: | |
1065 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1066 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
1067 | if (use_11b) | |
1068 | qparam.txop = 3264/32; | |
1069 | else | |
1070 | qparam.txop = 1504/32; | |
1071 | qparam.aifs = 2; | |
1072 | break; | |
1073 | } | |
aa837e1d | 1074 | } |
5825fe10 | 1075 | |
ab13315a KV |
1076 | qparam.uapsd = false; |
1077 | ||
54bcbc69 JB |
1078 | sdata->tx_conf[ac] = qparam; |
1079 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1080 | } |
e1b3ec1a | 1081 | |
f142c6b9 JB |
1082 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1083 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1084 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1085 | if (bss_notify) |
1086 | ieee80211_bss_info_change_notify(sdata, | |
1087 | BSS_CHANGED_QOS); | |
d9734979 | 1088 | } |
5825fe10 | 1089 | } |
e50db65c | 1090 | |
46900298 | 1091 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1092 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1093 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1094 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1095 | u32 tx_flags) | |
46900298 JB |
1096 | { |
1097 | struct ieee80211_local *local = sdata->local; | |
1098 | struct sk_buff *skb; | |
1099 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1100 | int err; |
46900298 | 1101 | |
15e230ab FZ |
1102 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
1103 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 6 + extra_len); | |
d15b8459 | 1104 | if (!skb) |
46900298 | 1105 | return; |
d15b8459 | 1106 | |
46900298 JB |
1107 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1108 | ||
1109 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1110 | memset(mgmt, 0, 24 + 6); | |
1111 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1112 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1113 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1114 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1115 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1116 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1117 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1118 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1119 | if (extra) |
1120 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1121 | |
fffd0934 JB |
1122 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1123 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1124 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1125 | WARN_ON(err); | |
1126 | } | |
1127 | ||
1672c0e3 JB |
1128 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1129 | tx_flags; | |
62ae67be | 1130 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1131 | } |
1132 | ||
6ae16775 AQ |
1133 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1134 | const u8 *bssid, u16 stype, u16 reason, | |
1135 | bool send_frame, u8 *frame_buf) | |
1136 | { | |
1137 | struct ieee80211_local *local = sdata->local; | |
1138 | struct sk_buff *skb; | |
1139 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1140 | ||
1141 | /* build frame */ | |
1142 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1143 | mgmt->duration = 0; /* initialize only */ | |
1144 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1145 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1146 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1147 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1148 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1149 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1150 | ||
1151 | if (send_frame) { | |
1152 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1153 | IEEE80211_DEAUTH_FRAME_LEN); | |
1154 | if (!skb) | |
1155 | return; | |
1156 | ||
1157 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1158 | ||
1159 | /* copy in frame */ | |
1160 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1161 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1162 | ||
1163 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1164 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1165 | IEEE80211_SKB_CB(skb)->flags |= | |
1166 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1167 | ||
1168 | ieee80211_tx_skb(sdata, skb); | |
1169 | } | |
1170 | } | |
1171 | ||
de95a54b | 1172 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
c604b9f2 | 1173 | size_t buffer_len, const u8 *ie, size_t ie_len, |
651b5225 | 1174 | enum ieee80211_band band, u32 rate_mask, |
2103dec1 | 1175 | struct cfg80211_chan_def *chandef) |
de95a54b JB |
1176 | { |
1177 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1178 | u8 *pos = buffer, *end = buffer + buffer_len; |
8e664fb3 JB |
1179 | size_t offset = 0, noffset; |
1180 | int supp_rates_len, i; | |
8dcb2003 JM |
1181 | u8 rates[32]; |
1182 | int num_rates; | |
1183 | int ext_rates_len; | |
2103dec1 SW |
1184 | int shift; |
1185 | u32 rate_flags; | |
de95a54b | 1186 | |
4d36ec58 | 1187 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1188 | if (WARN_ON_ONCE(!sband)) |
1189 | return 0; | |
de95a54b | 1190 | |
2103dec1 SW |
1191 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1192 | shift = ieee80211_chandef_get_shift(chandef); | |
1193 | ||
8dcb2003 JM |
1194 | num_rates = 0; |
1195 | for (i = 0; i < sband->n_bitrates; i++) { | |
1196 | if ((BIT(i) & rate_mask) == 0) | |
1197 | continue; /* skip rate */ | |
2103dec1 SW |
1198 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1199 | continue; | |
1200 | ||
1201 | rates[num_rates++] = | |
1202 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1203 | (1 << shift) * 5); | |
8dcb2003 JM |
1204 | } |
1205 | ||
1206 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1207 | |
c604b9f2 JB |
1208 | if (end - pos < 2 + supp_rates_len) |
1209 | goto out_err; | |
de95a54b | 1210 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1211 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1212 | memcpy(pos, rates, supp_rates_len); |
1213 | pos += supp_rates_len; | |
8e664fb3 JB |
1214 | |
1215 | /* insert "request information" if in custom IEs */ | |
1216 | if (ie && ie_len) { | |
1217 | static const u8 before_extrates[] = { | |
1218 | WLAN_EID_SSID, | |
1219 | WLAN_EID_SUPP_RATES, | |
1220 | WLAN_EID_REQUEST, | |
1221 | }; | |
1222 | noffset = ieee80211_ie_split(ie, ie_len, | |
1223 | before_extrates, | |
1224 | ARRAY_SIZE(before_extrates), | |
1225 | offset); | |
c604b9f2 JB |
1226 | if (end - pos < noffset - offset) |
1227 | goto out_err; | |
8e664fb3 JB |
1228 | memcpy(pos, ie + offset, noffset - offset); |
1229 | pos += noffset - offset; | |
1230 | offset = noffset; | |
1231 | } | |
1232 | ||
8dcb2003 JM |
1233 | ext_rates_len = num_rates - supp_rates_len; |
1234 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1235 | if (end - pos < 2 + ext_rates_len) |
1236 | goto out_err; | |
8e664fb3 | 1237 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1238 | *pos++ = ext_rates_len; |
1239 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1240 | pos += ext_rates_len; | |
8e664fb3 JB |
1241 | } |
1242 | ||
2103dec1 | 1243 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1244 | if (end - pos < 3) |
1245 | goto out_err; | |
651b5225 JM |
1246 | *pos++ = WLAN_EID_DS_PARAMS; |
1247 | *pos++ = 1; | |
2103dec1 SW |
1248 | *pos++ = ieee80211_frequency_to_channel( |
1249 | chandef->chan->center_freq); | |
651b5225 JM |
1250 | } |
1251 | ||
8e664fb3 JB |
1252 | /* insert custom IEs that go before HT */ |
1253 | if (ie && ie_len) { | |
1254 | static const u8 before_ht[] = { | |
1255 | WLAN_EID_SSID, | |
1256 | WLAN_EID_SUPP_RATES, | |
1257 | WLAN_EID_REQUEST, | |
1258 | WLAN_EID_EXT_SUPP_RATES, | |
1259 | WLAN_EID_DS_PARAMS, | |
1260 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1261 | }; | |
1262 | noffset = ieee80211_ie_split(ie, ie_len, | |
1263 | before_ht, ARRAY_SIZE(before_ht), | |
1264 | offset); | |
c604b9f2 JB |
1265 | if (end - pos < noffset - offset) |
1266 | goto out_err; | |
8e664fb3 JB |
1267 | memcpy(pos, ie + offset, noffset - offset); |
1268 | pos += noffset - offset; | |
1269 | offset = noffset; | |
de95a54b JB |
1270 | } |
1271 | ||
c604b9f2 JB |
1272 | if (sband->ht_cap.ht_supported) { |
1273 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1274 | goto out_err; | |
ef96a842 BG |
1275 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1276 | sband->ht_cap.cap); | |
c604b9f2 | 1277 | } |
5ef2d41a | 1278 | |
de95a54b JB |
1279 | /* |
1280 | * If adding more here, adjust code in main.c | |
1281 | * that calculates local->scan_ies_len. | |
1282 | */ | |
1283 | ||
8e664fb3 JB |
1284 | /* add any remaining custom IEs */ |
1285 | if (ie && ie_len) { | |
1286 | noffset = ie_len; | |
c604b9f2 JB |
1287 | if (end - pos < noffset - offset) |
1288 | goto out_err; | |
8e664fb3 JB |
1289 | memcpy(pos, ie + offset, noffset - offset); |
1290 | pos += noffset - offset; | |
de95a54b JB |
1291 | } |
1292 | ||
c604b9f2 JB |
1293 | if (sband->vht_cap.vht_supported) { |
1294 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) | |
1295 | goto out_err; | |
ba0afa2f MP |
1296 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1297 | sband->vht_cap.cap); | |
c604b9f2 | 1298 | } |
ba0afa2f | 1299 | |
c604b9f2 JB |
1300 | return pos - buffer; |
1301 | out_err: | |
1302 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1303 | return pos - buffer; |
1304 | } | |
1305 | ||
a619a4c0 | 1306 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
85a237fe | 1307 | u8 *dst, u32 ratemask, |
6b77863b | 1308 | struct ieee80211_channel *chan, |
a619a4c0 | 1309 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1310 | const u8 *ie, size_t ie_len, |
1311 | bool directed) | |
46900298 JB |
1312 | { |
1313 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1314 | struct cfg80211_chan_def chandef; |
46900298 JB |
1315 | struct sk_buff *skb; |
1316 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1317 | int ies_len; |
46900298 | 1318 | |
a806c558 PS |
1319 | /* |
1320 | * Do not send DS Channel parameter for directed probe requests | |
1321 | * in order to maximize the chance that we get a response. Some | |
1322 | * badly-behaved APs don't respond when this parameter is included. | |
1323 | */ | |
2103dec1 | 1324 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1325 | if (directed) |
2103dec1 | 1326 | chandef.chan = NULL; |
a806c558 | 1327 | else |
2103dec1 | 1328 | chandef.chan = chan; |
651b5225 | 1329 | |
7c12ce8b | 1330 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
b9a9ada1 | 1331 | ssid, ssid_len, 100 + ie_len); |
5b2bbf75 | 1332 | if (!skb) |
b9a9ada1 JB |
1333 | return NULL; |
1334 | ||
1335 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), | |
1336 | skb_tailroom(skb), | |
1337 | ie, ie_len, chan->band, | |
2103dec1 | 1338 | ratemask, &chandef); |
b9a9ada1 | 1339 | skb_put(skb, ies_len); |
7c12ce8b | 1340 | |
46900298 | 1341 | if (dst) { |
7c12ce8b | 1342 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1343 | memcpy(mgmt->da, dst, ETH_ALEN); |
1344 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1345 | } |
46900298 | 1346 | |
62ae67be | 1347 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1348 | |
a619a4c0 JO |
1349 | return skb; |
1350 | } | |
1351 | ||
1352 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1353 | const u8 *ssid, size_t ssid_len, | |
a806c558 | 1354 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1355 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1356 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1357 | { |
1358 | struct sk_buff *skb; | |
1359 | ||
fe94fe05 | 1360 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
6b77863b | 1361 | ssid, ssid_len, |
85a237fe | 1362 | ie, ie_len, directed); |
aad14ceb | 1363 | if (skb) { |
1672c0e3 | 1364 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1365 | if (scan) |
1366 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1367 | else | |
1368 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1369 | } |
46900298 JB |
1370 | } |
1371 | ||
2103dec1 | 1372 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1373 | struct ieee802_11_elems *elems, |
9ebb61a2 | 1374 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1375 | { |
1376 | struct ieee80211_supported_band *sband; | |
1377 | struct ieee80211_rate *bitrates; | |
1378 | size_t num_rates; | |
2103dec1 SW |
1379 | u32 supp_rates, rate_flags; |
1380 | int i, j, shift; | |
1381 | sband = sdata->local->hw.wiphy->bands[band]; | |
1382 | ||
1383 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1384 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1385 | |
4ee73f33 MK |
1386 | if (WARN_ON(!sband)) |
1387 | return 1; | |
46900298 JB |
1388 | |
1389 | bitrates = sband->bitrates; | |
1390 | num_rates = sband->n_bitrates; | |
1391 | supp_rates = 0; | |
1392 | for (i = 0; i < elems->supp_rates_len + | |
1393 | elems->ext_supp_rates_len; i++) { | |
1394 | u8 rate = 0; | |
1395 | int own_rate; | |
9ebb61a2 | 1396 | bool is_basic; |
46900298 JB |
1397 | if (i < elems->supp_rates_len) |
1398 | rate = elems->supp_rates[i]; | |
1399 | else if (elems->ext_supp_rates) | |
1400 | rate = elems->ext_supp_rates | |
1401 | [i - elems->supp_rates_len]; | |
1402 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1403 | is_basic = !!(rate & 0x80); |
1404 | ||
1405 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1406 | continue; | |
1407 | ||
1408 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1409 | int brate; |
1410 | if ((rate_flags & sband->bitrates[j].flags) | |
1411 | != rate_flags) | |
1412 | continue; | |
1413 | ||
1414 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1415 | 1 << shift); | |
1416 | ||
1417 | if (brate == own_rate) { | |
46900298 | 1418 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1419 | if (basic_rates && is_basic) |
1420 | *basic_rates |= BIT(j); | |
1421 | } | |
1422 | } | |
46900298 JB |
1423 | } |
1424 | return supp_rates; | |
1425 | } | |
f2753ddb | 1426 | |
84f6a01c JB |
1427 | void ieee80211_stop_device(struct ieee80211_local *local) |
1428 | { | |
1429 | ieee80211_led_radio(local, false); | |
67408c8c | 1430 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1431 | |
1432 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1433 | |
1434 | flush_workqueue(local->workqueue); | |
678f415f | 1435 | drv_stop(local); |
84f6a01c JB |
1436 | } |
1437 | ||
153a5fc4 SG |
1438 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1439 | struct ieee80211_sub_if_data *sdata) | |
1440 | { | |
1441 | struct ieee80211_chanctx_conf *conf; | |
1442 | struct ieee80211_chanctx *ctx; | |
1443 | ||
1444 | if (!local->use_chanctx) | |
1445 | return; | |
1446 | ||
1447 | mutex_lock(&local->chanctx_mtx); | |
1448 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1449 | lockdep_is_held(&local->chanctx_mtx)); | |
1450 | if (conf) { | |
1451 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1452 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1453 | } | |
1454 | mutex_unlock(&local->chanctx_mtx); | |
1455 | } | |
1456 | ||
f2753ddb JB |
1457 | int ieee80211_reconfig(struct ieee80211_local *local) |
1458 | { | |
1459 | struct ieee80211_hw *hw = &local->hw; | |
1460 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1461 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1462 | struct sta_info *sta; |
2683d65b | 1463 | int res, i; |
d888130a JB |
1464 | bool reconfig_due_to_wowlan = false; |
1465 | ||
8f21b0ad | 1466 | #ifdef CONFIG_PM |
ceb99fe0 JB |
1467 | if (local->suspended) |
1468 | local->resuming = true; | |
f2753ddb | 1469 | |
eecc4800 | 1470 | if (local->wowlan) { |
eecc4800 | 1471 | res = drv_resume(local); |
27b3eb9c | 1472 | local->wowlan = false; |
eecc4800 JB |
1473 | if (res < 0) { |
1474 | local->resuming = false; | |
1475 | return res; | |
1476 | } | |
1477 | if (res == 0) | |
1478 | goto wake_up; | |
1479 | WARN_ON(res > 1); | |
1480 | /* | |
1481 | * res is 1, which means the driver requested | |
1482 | * to go through a regular reset on wakeup. | |
1483 | */ | |
d888130a | 1484 | reconfig_due_to_wowlan = true; |
eecc4800 JB |
1485 | } |
1486 | #endif | |
94f9b97b JB |
1487 | /* everything else happens only if HW was up & running */ |
1488 | if (!local->open_count) | |
1489 | goto wake_up; | |
f2753ddb | 1490 | |
94f9b97b JB |
1491 | /* |
1492 | * Upon resume hardware can sometimes be goofy due to | |
1493 | * various platform / driver / bus issues, so restarting | |
1494 | * the device may at times not work immediately. Propagate | |
1495 | * the error. | |
1496 | */ | |
1497 | res = drv_start(local); | |
1498 | if (res) { | |
1499 | WARN(local->suspended, "Hardware became unavailable " | |
1500 | "upon resume. This could be a software issue " | |
1501 | "prior to suspend or a hardware issue.\n"); | |
1502 | return res; | |
f2753ddb JB |
1503 | } |
1504 | ||
7f281975 YAP |
1505 | /* setup fragmentation threshold */ |
1506 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1507 | ||
1508 | /* setup RTS threshold */ | |
1509 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1510 | ||
1511 | /* reset coverage class */ | |
1512 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1513 | ||
94f9b97b JB |
1514 | ieee80211_led_radio(local, true); |
1515 | ieee80211_mod_tpt_led_trig(local, | |
1516 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1517 | ||
f2753ddb | 1518 | /* add interfaces */ |
4b6f1dd6 JB |
1519 | sdata = rtnl_dereference(local->monitor_sdata); |
1520 | if (sdata) { | |
3c3e21e7 JB |
1521 | /* in HW restart it exists already */ |
1522 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1523 | res = drv_add_interface(local, sdata); |
1524 | if (WARN_ON(res)) { | |
1525 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
1526 | synchronize_net(); | |
1527 | kfree(sdata); | |
1528 | } | |
1529 | } | |
1530 | ||
f2753ddb JB |
1531 | list_for_each_entry(sdata, &local->interfaces, list) { |
1532 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1533 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1ed32e4f | 1534 | ieee80211_sdata_running(sdata)) |
7b7eab6f | 1535 | res = drv_add_interface(local, sdata); |
f2753ddb JB |
1536 | } |
1537 | ||
55de908a | 1538 | /* add channel contexts */ |
f0dea9c7 AS |
1539 | if (local->use_chanctx) { |
1540 | mutex_lock(&local->chanctx_mtx); | |
1541 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1542 | WARN_ON(drv_add_chanctx(local, ctx)); | |
1543 | mutex_unlock(&local->chanctx_mtx); | |
1544 | } | |
55de908a | 1545 | |
6352c87f | 1546 | list_for_each_entry(sdata, &local->interfaces, list) { |
6352c87f JB |
1547 | if (!ieee80211_sdata_running(sdata)) |
1548 | continue; | |
153a5fc4 | 1549 | ieee80211_assign_chanctx(local, sdata); |
6352c87f JB |
1550 | } |
1551 | ||
fe5f2559 | 1552 | sdata = rtnl_dereference(local->monitor_sdata); |
153a5fc4 SG |
1553 | if (sdata && ieee80211_sdata_running(sdata)) |
1554 | ieee80211_assign_chanctx(local, sdata); | |
fe5f2559 | 1555 | |
f2753ddb | 1556 | /* add STAs back */ |
34e89507 JB |
1557 | mutex_lock(&local->sta_mtx); |
1558 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1559 | enum ieee80211_sta_state state; |
f09603a2 | 1560 | |
2e8d397e AN |
1561 | if (!sta->uploaded) |
1562 | continue; | |
1563 | ||
1564 | /* AP-mode stations will be added later */ | |
1565 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1566 | continue; | |
1567 | ||
1568 | for (state = IEEE80211_STA_NOTEXIST; | |
1569 | state < sta->sta_state; state++) | |
1570 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1571 | state + 1)); | |
f2753ddb | 1572 | } |
34e89507 | 1573 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1574 | |
2683d65b | 1575 | /* reconfigure tx conf */ |
54bcbc69 JB |
1576 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1577 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1578 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1579 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1580 | !ieee80211_sdata_running(sdata)) | |
1581 | continue; | |
f6f3def3 | 1582 | |
54bcbc69 JB |
1583 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1584 | drv_conf_tx(local, sdata, i, | |
1585 | &sdata->tx_conf[i]); | |
1586 | } | |
f6f3def3 | 1587 | } |
2683d65b | 1588 | |
f2753ddb JB |
1589 | /* reconfigure hardware */ |
1590 | ieee80211_hw_config(local, ~0); | |
1591 | ||
f2753ddb | 1592 | ieee80211_configure_filter(local); |
f2753ddb JB |
1593 | |
1594 | /* Finally also reconfigure all the BSS information */ | |
1595 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1596 | u32 changed; |
1597 | ||
9607e6b6 | 1598 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1599 | continue; |
ac8dd506 JB |
1600 | |
1601 | /* common change flags for all interface types */ | |
1602 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1603 | BSS_CHANGED_ERP_PREAMBLE | | |
1604 | BSS_CHANGED_ERP_SLOT | | |
1605 | BSS_CHANGED_HT | | |
1606 | BSS_CHANGED_BASIC_RATES | | |
1607 | BSS_CHANGED_BEACON_INT | | |
1608 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1609 | BSS_CHANGED_CQM | |
55de47f6 | 1610 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1611 | BSS_CHANGED_IDLE | |
1612 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1613 | |
f2753ddb JB |
1614 | switch (sdata->vif.type) { |
1615 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1616 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1617 | BSS_CHANGED_ARP_FILTER | |
1618 | BSS_CHANGED_PS; | |
c65dd147 | 1619 | |
989c6505 AB |
1620 | /* Re-send beacon info report to the driver */ |
1621 | if (sdata->u.mgd.have_beacon) | |
1622 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1623 | |
8d61ffa5 | 1624 | sdata_lock(sdata); |
ac8dd506 | 1625 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1626 | sdata_unlock(sdata); |
ac8dd506 | 1627 | break; |
f2753ddb | 1628 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1629 | changed |= BSS_CHANGED_IBSS; |
1630 | /* fall through */ | |
f2753ddb | 1631 | case NL80211_IFTYPE_AP: |
339afbf4 | 1632 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1633 | |
1041638f | 1634 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1635 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1636 | ||
1041638f JB |
1637 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1638 | drv_start_ap(local, sdata); | |
1639 | } | |
1640 | ||
7827493b | 1641 | /* fall through */ |
f2753ddb | 1642 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1643 | if (sdata->vif.bss_conf.enable_beacon) { |
1644 | changed |= BSS_CHANGED_BEACON | | |
1645 | BSS_CHANGED_BEACON_ENABLED; | |
1646 | ieee80211_bss_info_change_notify(sdata, changed); | |
1647 | } | |
f2753ddb JB |
1648 | break; |
1649 | case NL80211_IFTYPE_WDS: | |
1650 | break; | |
1651 | case NL80211_IFTYPE_AP_VLAN: | |
1652 | case NL80211_IFTYPE_MONITOR: | |
1653 | /* ignore virtual */ | |
1654 | break; | |
98104fde | 1655 | case NL80211_IFTYPE_P2P_DEVICE: |
f142c6b9 JB |
1656 | changed = BSS_CHANGED_IDLE; |
1657 | break; | |
f2753ddb | 1658 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1659 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1660 | case NL80211_IFTYPE_P2P_CLIENT: |
1661 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1662 | WARN_ON(1); |
1663 | break; | |
1664 | } | |
1665 | } | |
1666 | ||
8e1b23b9 ES |
1667 | ieee80211_recalc_ps(local, -1); |
1668 | ||
6e1b1b24 EP |
1669 | /* |
1670 | * The sta might be in psm against the ap (e.g. because | |
1671 | * this was the state before a hw restart), so we | |
1672 | * explicitly send a null packet in order to make sure | |
1673 | * it'll sync against the ap (and get out of psm). | |
1674 | */ | |
1675 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1676 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1677 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1678 | continue; | |
20f544ee JB |
1679 | if (!sdata->u.mgd.associated) |
1680 | continue; | |
6e1b1b24 EP |
1681 | |
1682 | ieee80211_send_nullfunc(local, sdata, 0); | |
1683 | } | |
1684 | } | |
1685 | ||
2e8d397e AN |
1686 | /* APs are now beaconing, add back stations */ |
1687 | mutex_lock(&local->sta_mtx); | |
1688 | list_for_each_entry(sta, &local->sta_list, list) { | |
1689 | enum ieee80211_sta_state state; | |
1690 | ||
1691 | if (!sta->uploaded) | |
1692 | continue; | |
1693 | ||
1694 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1695 | continue; | |
1696 | ||
1697 | for (state = IEEE80211_STA_NOTEXIST; | |
1698 | state < sta->sta_state; state++) | |
1699 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1700 | state + 1)); | |
1701 | } | |
1702 | mutex_unlock(&local->sta_mtx); | |
1703 | ||
7b21aea0 ES |
1704 | /* add back keys */ |
1705 | list_for_each_entry(sdata, &local->interfaces, list) | |
1706 | if (ieee80211_sdata_running(sdata)) | |
1707 | ieee80211_enable_keys(sdata); | |
1708 | ||
c6209488 | 1709 | wake_up: |
04800ada AN |
1710 | local->in_reconfig = false; |
1711 | barrier(); | |
1712 | ||
3c3e21e7 JB |
1713 | if (local->monitors == local->open_count && local->monitors > 0) |
1714 | ieee80211_add_virtual_monitor(local); | |
1715 | ||
2a419056 JB |
1716 | /* |
1717 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
1718 | * sessions can be established after a resume. | |
1719 | * | |
1720 | * Also tear down aggregation sessions since reconfiguring | |
1721 | * them in a hardware restart scenario is not easily done | |
1722 | * right now, and the hardware will have lost information | |
1723 | * about the sessions, but we and the AP still think they | |
1724 | * are active. This is really a workaround though. | |
1725 | */ | |
74e2bd1f | 1726 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
2a419056 JB |
1727 | mutex_lock(&local->sta_mtx); |
1728 | ||
1729 | list_for_each_entry(sta, &local->sta_list, list) { | |
c82c4a80 JB |
1730 | ieee80211_sta_tear_down_BA_sessions( |
1731 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 1732 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 1733 | } |
2a419056 JB |
1734 | |
1735 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 1736 | } |
74e2bd1f | 1737 | |
445ea4e8 JB |
1738 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
1739 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
f2753ddb | 1740 | |
5bb644a0 JB |
1741 | /* |
1742 | * If this is for hw restart things are still running. | |
1743 | * We may want to change that later, however. | |
1744 | */ | |
8f21b0ad | 1745 | if (!local->suspended || reconfig_due_to_wowlan) |
9214ad7f | 1746 | drv_restart_complete(local); |
8f21b0ad JB |
1747 | |
1748 | if (!local->suspended) | |
5bb644a0 JB |
1749 | return 0; |
1750 | ||
1751 | #ifdef CONFIG_PM | |
ceb99fe0 | 1752 | /* first set suspended false, then resuming */ |
5bb644a0 | 1753 | local->suspended = false; |
ceb99fe0 JB |
1754 | mb(); |
1755 | local->resuming = false; | |
5bb644a0 | 1756 | |
b8360ab8 JB |
1757 | list_for_each_entry(sdata, &local->interfaces, list) { |
1758 | if (!ieee80211_sdata_running(sdata)) | |
1759 | continue; | |
1760 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1761 | ieee80211_sta_restart(sdata); | |
1762 | } | |
1763 | ||
26d59535 | 1764 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
1765 | #else |
1766 | WARN_ON(1); | |
1767 | #endif | |
f2753ddb JB |
1768 | return 0; |
1769 | } | |
42935eca | 1770 | |
95acac61 JB |
1771 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
1772 | { | |
1773 | struct ieee80211_sub_if_data *sdata; | |
1774 | struct ieee80211_local *local; | |
1775 | struct ieee80211_key *key; | |
1776 | ||
1777 | if (WARN_ON(!vif)) | |
1778 | return; | |
1779 | ||
1780 | sdata = vif_to_sdata(vif); | |
1781 | local = sdata->local; | |
1782 | ||
1783 | if (WARN_ON(!local->resuming)) | |
1784 | return; | |
1785 | ||
1786 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
1787 | return; | |
1788 | ||
1789 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
1790 | ||
1791 | mutex_lock(&local->key_mtx); | |
1792 | list_for_each_entry(key, &sdata->key_list, list) | |
1793 | key->flags |= KEY_FLAG_TAINTED; | |
1794 | mutex_unlock(&local->key_mtx); | |
1795 | } | |
1796 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
1797 | ||
04ecd257 | 1798 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 1799 | { |
04ecd257 JB |
1800 | struct ieee80211_local *local = sdata->local; |
1801 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1802 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 1803 | |
04ecd257 | 1804 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 1805 | |
04ecd257 JB |
1806 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1807 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 1808 | |
04ecd257 | 1809 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 1810 | goto unlock; |
0f78231b | 1811 | |
04ecd257 JB |
1812 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
1813 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 1814 | unlock: |
04ecd257 | 1815 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 1816 | } |
8e664fb3 | 1817 | |
21f659bf EP |
1818 | void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) |
1819 | { | |
1820 | struct ieee80211_local *local = sdata->local; | |
1821 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1822 | struct ieee80211_chanctx *chanctx; | |
1823 | ||
1824 | mutex_lock(&local->chanctx_mtx); | |
1825 | ||
1826 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1827 | lockdep_is_held(&local->chanctx_mtx)); | |
1828 | ||
1829 | if (WARN_ON_ONCE(!chanctx_conf)) | |
1830 | goto unlock; | |
1831 | ||
1832 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); | |
1833 | ieee80211_recalc_chanctx_min_def(local, chanctx); | |
1834 | unlock: | |
1835 | mutex_unlock(&local->chanctx_mtx); | |
1836 | } | |
1837 | ||
8e664fb3 JB |
1838 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) |
1839 | { | |
1840 | int i; | |
1841 | ||
1842 | for (i = 0; i < n_ids; i++) | |
1843 | if (ids[i] == id) | |
1844 | return true; | |
1845 | return false; | |
1846 | } | |
1847 | ||
1848 | /** | |
1849 | * ieee80211_ie_split - split an IE buffer according to ordering | |
1850 | * | |
1851 | * @ies: the IE buffer | |
1852 | * @ielen: the length of the IE buffer | |
1853 | * @ids: an array with element IDs that are allowed before | |
1854 | * the split | |
1855 | * @n_ids: the size of the element ID array | |
1856 | * @offset: offset where to start splitting in the buffer | |
1857 | * | |
1858 | * This function splits an IE buffer by updating the @offset | |
1859 | * variable to point to the location where the buffer should be | |
1860 | * split. | |
1861 | * | |
1862 | * It assumes that the given IE buffer is well-formed, this | |
1863 | * has to be guaranteed by the caller! | |
1864 | * | |
1865 | * It also assumes that the IEs in the buffer are ordered | |
1866 | * correctly, if not the result of using this function will not | |
1867 | * be ordered correctly either, i.e. it does no reordering. | |
1868 | * | |
1869 | * The function returns the offset where the next part of the | |
1870 | * buffer starts, which may be @ielen if the entire (remainder) | |
1871 | * of the buffer should be used. | |
1872 | */ | |
1873 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1874 | const u8 *ids, int n_ids, size_t offset) | |
1875 | { | |
1876 | size_t pos = offset; | |
1877 | ||
1878 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) | |
1879 | pos += 2 + ies[pos + 1]; | |
1880 | ||
1881 | return pos; | |
1882 | } | |
1883 | ||
1884 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) | |
1885 | { | |
1886 | size_t pos = offset; | |
1887 | ||
1888 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
1889 | pos += 2 + ies[pos + 1]; | |
1890 | ||
1891 | return pos; | |
1892 | } | |
615f7b9b MV |
1893 | |
1894 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
1895 | int rssi_min_thold, | |
1896 | int rssi_max_thold) | |
1897 | { | |
1898 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
1899 | ||
1900 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1901 | return; | |
1902 | ||
1903 | /* | |
1904 | * Scale up threshold values before storing it, as the RSSI averaging | |
1905 | * algorithm uses a scaled up value as well. Change this scaling | |
1906 | * factor if the RSSI averaging algorithm changes. | |
1907 | */ | |
1908 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
1909 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
1910 | } | |
1911 | ||
1912 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
1913 | int rssi_min_thold, | |
1914 | int rssi_max_thold) | |
1915 | { | |
1916 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1917 | ||
1918 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
1919 | rssi_min_thold > rssi_max_thold); | |
1920 | ||
1921 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
1922 | rssi_max_thold); | |
1923 | } | |
1924 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
1925 | ||
1926 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
1927 | { | |
1928 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1929 | ||
1930 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
1931 | } | |
1932 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 1933 | |
ef96a842 | 1934 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
1935 | u16 cap) |
1936 | { | |
1937 | __le16 tmp; | |
1938 | ||
1939 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
1940 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
1941 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
1942 | ||
1943 | /* capability flags */ | |
1944 | tmp = cpu_to_le16(cap); | |
1945 | memcpy(pos, &tmp, sizeof(u16)); | |
1946 | pos += sizeof(u16); | |
1947 | ||
1948 | /* AMPDU parameters */ | |
ef96a842 BG |
1949 | *pos++ = ht_cap->ampdu_factor | |
1950 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
1951 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
1952 | ||
1953 | /* MCS set */ | |
ef96a842 BG |
1954 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
1955 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
1956 | |
1957 | /* extended capabilities */ | |
1958 | pos += sizeof(__le16); | |
1959 | ||
1960 | /* BF capabilities */ | |
1961 | pos += sizeof(__le32); | |
1962 | ||
1963 | /* antenna selection */ | |
1964 | pos += sizeof(u8); | |
1965 | ||
1966 | return pos; | |
1967 | } | |
1968 | ||
ba0afa2f | 1969 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 1970 | u32 cap) |
ba0afa2f MP |
1971 | { |
1972 | __le32 tmp; | |
1973 | ||
1974 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
1975 | *pos++ = sizeof(struct ieee80211_vht_cap); |
1976 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
1977 | |
1978 | /* capability flags */ | |
1979 | tmp = cpu_to_le32(cap); | |
1980 | memcpy(pos, &tmp, sizeof(u32)); | |
1981 | pos += sizeof(u32); | |
1982 | ||
1983 | /* VHT MCS set */ | |
1984 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
1985 | pos += sizeof(vht_cap->vht_mcs); | |
1986 | ||
1987 | return pos; | |
1988 | } | |
1989 | ||
074d46d1 | 1990 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 1991 | const struct cfg80211_chan_def *chandef, |
431e3154 | 1992 | u16 prot_mode) |
42e7aa77 | 1993 | { |
074d46d1 | 1994 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 1995 | /* Build HT Information */ |
074d46d1 JB |
1996 | *pos++ = WLAN_EID_HT_OPERATION; |
1997 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
1998 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
1999 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
2000 | chandef->chan->center_freq); | |
2001 | switch (chandef->width) { | |
2002 | case NL80211_CHAN_WIDTH_160: | |
2003 | case NL80211_CHAN_WIDTH_80P80: | |
2004 | case NL80211_CHAN_WIDTH_80: | |
2005 | case NL80211_CHAN_WIDTH_40: | |
2006 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
2007 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2008 | else | |
2009 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 2010 | break; |
42e7aa77 | 2011 | default: |
074d46d1 | 2012 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
2013 | break; |
2014 | } | |
aee286c2 | 2015 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
2016 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
2017 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 2018 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 2019 | |
431e3154 | 2020 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 2021 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
2022 | |
2023 | /* It seems that Basic MCS set and Supported MCS set | |
2024 | are identical for the first 10 bytes */ | |
074d46d1 JB |
2025 | memset(&ht_oper->basic_set, 0, 16); |
2026 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 2027 | |
074d46d1 | 2028 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
2029 | } |
2030 | ||
4bf88530 | 2031 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 2032 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 2033 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
2034 | { |
2035 | enum nl80211_channel_type channel_type; | |
2036 | ||
4bf88530 JB |
2037 | if (!ht_oper) { |
2038 | cfg80211_chandef_create(chandef, control_chan, | |
2039 | NL80211_CHAN_NO_HT); | |
2040 | return; | |
2041 | } | |
42e7aa77 | 2042 | |
074d46d1 | 2043 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2044 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2045 | channel_type = NL80211_CHAN_HT20; | |
2046 | break; | |
2047 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2048 | channel_type = NL80211_CHAN_HT40PLUS; | |
2049 | break; | |
2050 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2051 | channel_type = NL80211_CHAN_HT40MINUS; | |
2052 | break; | |
2053 | default: | |
2054 | channel_type = NL80211_CHAN_NO_HT; | |
2055 | } | |
2056 | ||
4bf88530 | 2057 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
2058 | } |
2059 | ||
2103dec1 SW |
2060 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2061 | const struct ieee80211_supported_band *sband, | |
2062 | const u8 *srates, int srates_len, u32 *rates) | |
2063 | { | |
2064 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2065 | int shift = ieee80211_chandef_get_shift(chandef); | |
2066 | struct ieee80211_rate *br; | |
2067 | int brate, rate, i, j, count = 0; | |
2068 | ||
2069 | *rates = 0; | |
2070 | ||
2071 | for (i = 0; i < srates_len; i++) { | |
2072 | rate = srates[i] & 0x7f; | |
2073 | ||
2074 | for (j = 0; j < sband->n_bitrates; j++) { | |
2075 | br = &sband->bitrates[j]; | |
2076 | if ((rate_flags & br->flags) != rate_flags) | |
2077 | continue; | |
2078 | ||
2079 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2080 | if (brate == rate) { | |
2081 | *rates |= BIT(j); | |
2082 | count++; | |
2083 | break; | |
2084 | } | |
2085 | } | |
2086 | } | |
2087 | return count; | |
2088 | } | |
2089 | ||
fc8a7321 | 2090 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2091 | struct sk_buff *skb, bool need_basic, |
2092 | enum ieee80211_band band) | |
768db343 | 2093 | { |
768db343 AN |
2094 | struct ieee80211_local *local = sdata->local; |
2095 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2096 | int rate, shift; |
768db343 | 2097 | u8 i, rates, *pos; |
fc8a7321 | 2098 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2099 | u32 rate_flags; |
768db343 | 2100 | |
2103dec1 SW |
2101 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2102 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2103 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2104 | rates = 0; |
2105 | for (i = 0; i < sband->n_bitrates; i++) { | |
2106 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2107 | continue; | |
2108 | rates++; | |
2109 | } | |
768db343 AN |
2110 | if (rates > 8) |
2111 | rates = 8; | |
2112 | ||
2113 | if (skb_tailroom(skb) < rates + 2) | |
2114 | return -ENOMEM; | |
2115 | ||
2116 | pos = skb_put(skb, rates + 2); | |
2117 | *pos++ = WLAN_EID_SUPP_RATES; | |
2118 | *pos++ = rates; | |
2119 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2120 | u8 basic = 0; |
2103dec1 SW |
2121 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2122 | continue; | |
2123 | ||
657c3e0c AN |
2124 | if (need_basic && basic_rates & BIT(i)) |
2125 | basic = 0x80; | |
768db343 | 2126 | rate = sband->bitrates[i].bitrate; |
2103dec1 SW |
2127 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2128 | 5 * (1 << shift)); | |
2129 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2130 | } |
2131 | ||
2132 | return 0; | |
2133 | } | |
2134 | ||
fc8a7321 | 2135 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2136 | struct sk_buff *skb, bool need_basic, |
2137 | enum ieee80211_band band) | |
768db343 | 2138 | { |
768db343 AN |
2139 | struct ieee80211_local *local = sdata->local; |
2140 | struct ieee80211_supported_band *sband; | |
cc63ec76 | 2141 | int rate, shift; |
768db343 | 2142 | u8 i, exrates, *pos; |
fc8a7321 | 2143 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2144 | u32 rate_flags; |
2145 | ||
2146 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2147 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2148 | |
6b77863b | 2149 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2150 | exrates = 0; |
2151 | for (i = 0; i < sband->n_bitrates; i++) { | |
2152 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2153 | continue; | |
2154 | exrates++; | |
2155 | } | |
2156 | ||
768db343 AN |
2157 | if (exrates > 8) |
2158 | exrates -= 8; | |
2159 | else | |
2160 | exrates = 0; | |
2161 | ||
2162 | if (skb_tailroom(skb) < exrates + 2) | |
2163 | return -ENOMEM; | |
2164 | ||
2165 | if (exrates) { | |
2166 | pos = skb_put(skb, exrates + 2); | |
2167 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2168 | *pos++ = exrates; | |
2169 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c | 2170 | u8 basic = 0; |
2103dec1 SW |
2171 | if ((rate_flags & sband->bitrates[i].flags) |
2172 | != rate_flags) | |
2173 | continue; | |
657c3e0c AN |
2174 | if (need_basic && basic_rates & BIT(i)) |
2175 | basic = 0x80; | |
2103dec1 SW |
2176 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2177 | 5 * (1 << shift)); | |
2178 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2179 | } |
2180 | } | |
2181 | return 0; | |
2182 | } | |
1dae27f8 WYG |
2183 | |
2184 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2185 | { | |
2186 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2187 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2188 | ||
be6bcabc WYG |
2189 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2190 | /* non-managed type inferfaces */ | |
2191 | return 0; | |
2192 | } | |
3a7bba64 | 2193 | return ifmgd->ave_beacon_signal / 16; |
1dae27f8 | 2194 | } |
0d8a0a17 | 2195 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2196 | |
2197 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2198 | { | |
2199 | if (!mcs) | |
2200 | return 1; | |
2201 | ||
2202 | /* TODO: consider rx_highest */ | |
2203 | ||
2204 | if (mcs->rx_mask[3]) | |
2205 | return 4; | |
2206 | if (mcs->rx_mask[2]) | |
2207 | return 3; | |
2208 | if (mcs->rx_mask[1]) | |
2209 | return 2; | |
2210 | return 1; | |
2211 | } | |
f4bda337 TP |
2212 | |
2213 | /** | |
2214 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2215 | * @local: mac80211 hw info struct | |
2216 | * @status: RX status | |
2217 | * @mpdu_len: total MPDU length (including FCS) | |
2218 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2219 | * | |
2220 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2221 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2222 | * the timestamp to TSF at beginning of MPDU reception. | |
2223 | */ | |
2224 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2225 | struct ieee80211_rx_status *status, | |
2226 | unsigned int mpdu_len, | |
2227 | unsigned int mpdu_offset) | |
2228 | { | |
2229 | u64 ts = status->mactime; | |
2230 | struct rate_info ri; | |
2231 | u16 rate; | |
2232 | ||
2233 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2234 | return 0; | |
2235 | ||
2236 | memset(&ri, 0, sizeof(ri)); | |
2237 | ||
2238 | /* Fill cfg80211 rate info */ | |
2239 | if (status->flag & RX_FLAG_HT) { | |
2240 | ri.mcs = status->rate_idx; | |
2241 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2242 | if (status->flag & RX_FLAG_40MHZ) | |
2243 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2244 | if (status->flag & RX_FLAG_SHORT_GI) | |
2245 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2246 | } else if (status->flag & RX_FLAG_VHT) { |
2247 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2248 | ri.mcs = status->rate_idx; | |
2249 | ri.nss = status->vht_nss; | |
2250 | if (status->flag & RX_FLAG_40MHZ) | |
2251 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2252 | if (status->flag & RX_FLAG_80MHZ) | |
2253 | ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; | |
2254 | if (status->flag & RX_FLAG_80P80MHZ) | |
2255 | ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; | |
2256 | if (status->flag & RX_FLAG_160MHZ) | |
2257 | ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; | |
2258 | if (status->flag & RX_FLAG_SHORT_GI) | |
2259 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2260 | } else { |
2261 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2262 | int shift = 0; |
2263 | int bitrate; | |
2264 | ||
2265 | if (status->flag & RX_FLAG_10MHZ) | |
2266 | shift = 1; | |
2267 | if (status->flag & RX_FLAG_5MHZ) | |
2268 | shift = 2; | |
f4bda337 TP |
2269 | |
2270 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2271 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2272 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4bda337 TP |
2273 | } |
2274 | ||
2275 | rate = cfg80211_calculate_bitrate(&ri); | |
d86aa4f8 JB |
2276 | if (WARN_ONCE(!rate, |
2277 | "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n", | |
2278 | status->flag, status->rate_idx, status->vht_nss)) | |
2279 | return 0; | |
f4bda337 TP |
2280 | |
2281 | /* rewind from end of MPDU */ | |
2282 | if (status->flag & RX_FLAG_MACTIME_END) | |
2283 | ts -= mpdu_len * 8 * 10 / rate; | |
2284 | ||
2285 | ts += mpdu_offset * 8 * 10 / rate; | |
2286 | ||
2287 | return ts; | |
2288 | } | |
164eb02d SW |
2289 | |
2290 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2291 | { | |
2292 | struct ieee80211_sub_if_data *sdata; | |
d2859df5 | 2293 | struct cfg80211_chan_def chandef; |
164eb02d SW |
2294 | |
2295 | mutex_lock(&local->iflist_mtx); | |
2296 | list_for_each_entry(sdata, &local->interfaces, list) { | |
2297 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); | |
2298 | ||
2299 | if (sdata->wdev.cac_started) { | |
d2859df5 | 2300 | chandef = sdata->vif.bss_conf.chandef; |
164eb02d SW |
2301 | ieee80211_vif_release_channel(sdata); |
2302 | cfg80211_cac_event(sdata->dev, | |
d2859df5 | 2303 | &chandef, |
164eb02d SW |
2304 | NL80211_RADAR_CAC_ABORTED, |
2305 | GFP_KERNEL); | |
2306 | } | |
2307 | } | |
2308 | mutex_unlock(&local->iflist_mtx); | |
2309 | } | |
2310 | ||
2311 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2312 | { | |
2313 | struct ieee80211_local *local = | |
2314 | container_of(work, struct ieee80211_local, radar_detected_work); | |
84a3d1c9 | 2315 | struct cfg80211_chan_def chandef = local->hw.conf.chandef; |
164eb02d SW |
2316 | |
2317 | ieee80211_dfs_cac_cancel(local); | |
2318 | ||
2319 | if (local->use_chanctx) | |
2320 | /* currently not handled */ | |
2321 | WARN_ON(1); | |
84a3d1c9 | 2322 | else |
164eb02d | 2323 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
164eb02d SW |
2324 | } |
2325 | ||
2326 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2327 | { | |
2328 | struct ieee80211_local *local = hw_to_local(hw); | |
2329 | ||
2330 | trace_api_radar_detected(local); | |
2331 | ||
2332 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2333 | } | |
2334 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2335 | |
2336 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2337 | { | |
2338 | u32 ret; | |
2339 | int tmp; | |
2340 | ||
2341 | switch (c->width) { | |
2342 | case NL80211_CHAN_WIDTH_20: | |
2343 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2344 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2345 | break; | |
2346 | case NL80211_CHAN_WIDTH_40: | |
2347 | c->width = NL80211_CHAN_WIDTH_20; | |
2348 | c->center_freq1 = c->chan->center_freq; | |
2349 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2350 | IEEE80211_STA_DISABLE_VHT; | |
2351 | break; | |
2352 | case NL80211_CHAN_WIDTH_80: | |
2353 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2354 | /* n_P40 */ | |
2355 | tmp /= 2; | |
2356 | /* freq_P40 */ | |
2357 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2358 | c->width = NL80211_CHAN_WIDTH_40; | |
2359 | ret = IEEE80211_STA_DISABLE_VHT; | |
2360 | break; | |
2361 | case NL80211_CHAN_WIDTH_80P80: | |
2362 | c->center_freq2 = 0; | |
2363 | c->width = NL80211_CHAN_WIDTH_80; | |
2364 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2365 | IEEE80211_STA_DISABLE_160MHZ; | |
2366 | break; | |
2367 | case NL80211_CHAN_WIDTH_160: | |
2368 | /* n_P20 */ | |
2369 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2370 | /* n_P80 */ | |
2371 | tmp /= 4; | |
2372 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2373 | c->width = NL80211_CHAN_WIDTH_80; | |
2374 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2375 | IEEE80211_STA_DISABLE_160MHZ; | |
2376 | break; | |
2377 | default: | |
2378 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2379 | WARN_ON_ONCE(1); | |
2380 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2381 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2382 | break; | |
2383 | case NL80211_CHAN_WIDTH_5: | |
2384 | case NL80211_CHAN_WIDTH_10: | |
2385 | WARN_ON_ONCE(1); | |
2386 | /* keep c->width */ | |
2387 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2388 | break; | |
2389 | } | |
2390 | ||
2391 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2392 | ||
2393 | return ret; | |
2394 | } | |
687da132 EG |
2395 | |
2396 | /* | |
2397 | * Returns true if smps_mode_new is strictly more restrictive than | |
2398 | * smps_mode_old. | |
2399 | */ | |
2400 | bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, | |
2401 | enum ieee80211_smps_mode smps_mode_new) | |
2402 | { | |
2403 | if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || | |
2404 | smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) | |
2405 | return false; | |
2406 | ||
2407 | switch (smps_mode_old) { | |
2408 | case IEEE80211_SMPS_STATIC: | |
2409 | return false; | |
2410 | case IEEE80211_SMPS_DYNAMIC: | |
2411 | return smps_mode_new == IEEE80211_SMPS_STATIC; | |
2412 | case IEEE80211_SMPS_OFF: | |
2413 | return smps_mode_new != IEEE80211_SMPS_OFF; | |
2414 | default: | |
2415 | WARN_ON(1); | |
2416 | } | |
2417 | ||
2418 | return false; | |
2419 | } | |
c6da674a CYY |
2420 | |
2421 | int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, | |
2422 | struct cfg80211_csa_settings *csa_settings) | |
2423 | { | |
2424 | struct sk_buff *skb; | |
2425 | struct ieee80211_mgmt *mgmt; | |
2426 | struct ieee80211_local *local = sdata->local; | |
2427 | int freq; | |
2428 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + | |
2429 | sizeof(mgmt->u.action.u.chan_switch); | |
2430 | u8 *pos; | |
2431 | ||
2432 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
2433 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) | |
2434 | return -EOPNOTSUPP; | |
2435 | ||
2436 | skb = dev_alloc_skb(local->tx_headroom + hdr_len + | |
2437 | 5 + /* channel switch announcement element */ | |
2438 | 3 + /* secondary channel offset element */ | |
2439 | 8); /* mesh channel switch parameters element */ | |
2440 | if (!skb) | |
2441 | return -ENOMEM; | |
2442 | ||
2443 | skb_reserve(skb, local->tx_headroom); | |
2444 | mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); | |
2445 | memset(mgmt, 0, hdr_len); | |
2446 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2447 | IEEE80211_STYPE_ACTION); | |
2448 | ||
2449 | eth_broadcast_addr(mgmt->da); | |
2450 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
2451 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2452 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); | |
2453 | } else { | |
2454 | struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; | |
2455 | memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); | |
2456 | } | |
2457 | mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
2458 | mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; | |
2459 | pos = skb_put(skb, 5); | |
2460 | *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ | |
2461 | *pos++ = 3; /* IE length */ | |
2462 | *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ | |
2463 | freq = csa_settings->chandef.chan->center_freq; | |
2464 | *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ | |
2465 | *pos++ = csa_settings->count; /* count */ | |
2466 | ||
2467 | if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { | |
2468 | enum nl80211_channel_type ch_type; | |
2469 | ||
2470 | skb_put(skb, 3); | |
2471 | *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ | |
2472 | *pos++ = 1; /* IE length */ | |
2473 | ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); | |
2474 | if (ch_type == NL80211_CHAN_HT40PLUS) | |
2475 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2476 | else | |
2477 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2478 | } | |
2479 | ||
2480 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2481 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
c6da674a CYY |
2482 | |
2483 | skb_put(skb, 8); | |
2484 | *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ | |
2485 | *pos++ = 6; /* IE length */ | |
2486 | *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ | |
2487 | *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ | |
2488 | *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; | |
2489 | *pos++ |= csa_settings->block_tx ? | |
2490 | WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; | |
2491 | put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ | |
2492 | pos += 2; | |
ca91dc97 | 2493 | put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
c6da674a | 2494 | pos += 2; |
c6da674a CYY |
2495 | } |
2496 | ||
2497 | ieee80211_tx_skb(sdata, skb); | |
2498 | return 0; | |
2499 | } | |
2475b1cc MS |
2500 | |
2501 | bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) | |
2502 | { | |
2503 | return !(cs == NULL || cs->cipher == 0 || | |
2504 | cs->hdr_len < cs->pn_len + cs->pn_off || | |
2505 | cs->hdr_len <= cs->key_idx_off || | |
2506 | cs->key_idx_shift > 7 || | |
2507 | cs->key_idx_mask == 0); | |
2508 | } | |
2509 | ||
2510 | bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) | |
2511 | { | |
2512 | int i; | |
2513 | ||
2514 | /* Ensure we have enough iftype bitmap space for all iftype values */ | |
2515 | WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); | |
2516 | ||
2517 | for (i = 0; i < n; i++) | |
2518 | if (!ieee80211_cs_valid(&cs[i])) | |
2519 | return false; | |
2520 | ||
2521 | return true; | |
2522 | } | |
2523 | ||
2524 | const struct ieee80211_cipher_scheme * | |
2525 | ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, | |
2526 | enum nl80211_iftype iftype) | |
2527 | { | |
2528 | const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; | |
2529 | int n = local->hw.n_cipher_schemes; | |
2530 | int i; | |
2531 | const struct ieee80211_cipher_scheme *cs = NULL; | |
2532 | ||
2533 | for (i = 0; i < n; i++) { | |
2534 | if (l[i].cipher == cipher) { | |
2535 | cs = &l[i]; | |
2536 | break; | |
2537 | } | |
2538 | } | |
2539 | ||
2540 | if (!cs || !(cs->iftype & BIT(iftype))) | |
2541 | return NULL; | |
2542 | ||
2543 | return cs; | |
2544 | } | |
2545 | ||
2546 | int ieee80211_cs_headroom(struct ieee80211_local *local, | |
2547 | struct cfg80211_crypto_settings *crypto, | |
2548 | enum nl80211_iftype iftype) | |
2549 | { | |
2550 | const struct ieee80211_cipher_scheme *cs; | |
2551 | int headroom = IEEE80211_ENCRYPT_HEADROOM; | |
2552 | int i; | |
2553 | ||
2554 | for (i = 0; i < crypto->n_ciphers_pairwise; i++) { | |
2555 | cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], | |
2556 | iftype); | |
2557 | ||
2558 | if (cs && headroom < cs->hdr_len) | |
2559 | headroom = cs->hdr_len; | |
2560 | } | |
2561 | ||
2562 | cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); | |
2563 | if (cs && headroom < cs->hdr_len) | |
2564 | headroom = cs->hdr_len; | |
2565 | ||
2566 | return headroom; | |
2567 | } |