Commit | Line | Data |
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c2d1560a JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * utilities for mac80211 | |
12 | */ | |
13 | ||
14 | #include <net/mac80211.h> | |
15 | #include <linux/netdevice.h> | |
bc3b2d7f | 16 | #include <linux/export.h> |
c2d1560a JB |
17 | #include <linux/types.h> |
18 | #include <linux/slab.h> | |
19 | #include <linux/skbuff.h> | |
20 | #include <linux/etherdevice.h> | |
21 | #include <linux/if_arp.h> | |
c2d1560a | 22 | #include <linux/bitmap.h> |
dd76986b | 23 | #include <linux/crc32.h> |
881d966b | 24 | #include <net/net_namespace.h> |
c2d1560a | 25 | #include <net/cfg80211.h> |
dabeb344 | 26 | #include <net/rtnetlink.h> |
c2d1560a JB |
27 | |
28 | #include "ieee80211_i.h" | |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 | 30 | #include "rate.h" |
ee385855 | 31 | #include "mesh.h" |
c2d1560a | 32 | #include "wme.h" |
f2753ddb | 33 | #include "led.h" |
fffd0934 | 34 | #include "wep.h" |
c2d1560a JB |
35 | |
36 | /* privid for wiphys to determine whether they belong to us or not */ | |
8a47cea7 | 37 | const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; |
c2d1560a | 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)) { | |
f359d3fe | 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 | ||
e3685e03 JB |
438 | void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
439 | struct sk_buff_head *skbs) | |
8f77f384 JB |
440 | { |
441 | struct ieee80211_hw *hw = &local->hw; | |
442 | struct sk_buff *skb; | |
443 | unsigned long flags; | |
b0b97a8a | 444 | int queue, i; |
8f77f384 JB |
445 | |
446 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 447 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
448 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
449 | ||
450 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 451 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
452 | continue; |
453 | } | |
454 | ||
3a25a8c8 | 455 | queue = info->hw_queue; |
4644ae89 JB |
456 | |
457 | __ieee80211_stop_queue(hw, queue, | |
458 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
459 | ||
3b8d81e0 | 460 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
461 | } |
462 | ||
3b8d81e0 | 463 | for (i = 0; i < hw->queues; i++) |
8f77f384 JB |
464 | __ieee80211_wake_queue(hw, i, |
465 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD); | |
8f77f384 | 466 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
467 | } |
468 | ||
ce7c9111 | 469 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 JB |
470 | unsigned long queues, |
471 | enum queue_stop_reason reason) | |
c2d1560a | 472 | { |
ce7c9111 KV |
473 | struct ieee80211_local *local = hw_to_local(hw); |
474 | unsigned long flags; | |
c2d1560a JB |
475 | int i; |
476 | ||
ce7c9111 KV |
477 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
478 | ||
445ea4e8 | 479 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
480 | __ieee80211_stop_queue(hw, i, reason); |
481 | ||
482 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
483 | } | |
484 | ||
485 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
486 | { | |
445ea4e8 | 487 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
ce7c9111 | 488 | IEEE80211_QUEUE_STOP_REASON_DRIVER); |
c2d1560a JB |
489 | } |
490 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
491 | ||
92ab8535 TW |
492 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
493 | { | |
494 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
495 | unsigned long flags; |
496 | int ret; | |
96f5e66e | 497 | |
e4e72fb4 JB |
498 | if (WARN_ON(queue >= hw->queues)) |
499 | return true; | |
96f5e66e | 500 | |
3b8d81e0 | 501 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
502 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
503 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
504 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
505 | return ret; | |
92ab8535 TW |
506 | } |
507 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
508 | ||
ce7c9111 | 509 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 510 | unsigned long queues, |
ce7c9111 | 511 | enum queue_stop_reason reason) |
c2d1560a | 512 | { |
ce7c9111 KV |
513 | struct ieee80211_local *local = hw_to_local(hw); |
514 | unsigned long flags; | |
c2d1560a JB |
515 | int i; |
516 | ||
ce7c9111 KV |
517 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
518 | ||
445ea4e8 | 519 | for_each_set_bit(i, &queues, hw->queues) |
ce7c9111 KV |
520 | __ieee80211_wake_queue(hw, i, reason); |
521 | ||
522 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
523 | } | |
524 | ||
525 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
526 | { | |
445ea4e8 JB |
527 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
528 | IEEE80211_QUEUE_STOP_REASON_DRIVER); | |
c2d1560a JB |
529 | } |
530 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 531 | |
39ecc01d JB |
532 | void ieee80211_flush_queues(struct ieee80211_local *local, |
533 | struct ieee80211_sub_if_data *sdata) | |
534 | { | |
535 | u32 queues; | |
536 | ||
537 | if (!local->ops->flush) | |
538 | return; | |
539 | ||
540 | if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { | |
541 | int ac; | |
542 | ||
543 | queues = 0; | |
544 | ||
545 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
546 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
547 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
548 | queues |= BIT(sdata->vif.cab_queue); | |
549 | } else { | |
550 | /* all queues */ | |
551 | queues = BIT(local->hw.queues) - 1; | |
552 | } | |
553 | ||
59f48fe2 | 554 | ieee80211_stop_queues_by_reason(&local->hw, queues, |
445ea4e8 JB |
555 | IEEE80211_QUEUE_STOP_REASON_FLUSH); |
556 | ||
77be2c54 | 557 | drv_flush(local, sdata, queues, false); |
445ea4e8 | 558 | |
59f48fe2 | 559 | ieee80211_wake_queues_by_reason(&local->hw, queues, |
445ea4e8 | 560 | IEEE80211_QUEUE_STOP_REASON_FLUSH); |
39ecc01d JB |
561 | } |
562 | ||
c7c71066 JB |
563 | static void __iterate_active_interfaces(struct ieee80211_local *local, |
564 | u32 iter_flags, | |
565 | void (*iterator)(void *data, u8 *mac, | |
566 | struct ieee80211_vif *vif), | |
567 | void *data) | |
dabeb344 | 568 | { |
dabeb344 JB |
569 | struct ieee80211_sub_if_data *sdata; |
570 | ||
c7c71066 | 571 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 572 | switch (sdata->vif.type) { |
05c914fe | 573 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
574 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
575 | continue; | |
576 | break; | |
05c914fe | 577 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 578 | continue; |
2ca27bcf | 579 | default: |
2f561feb ID |
580 | break; |
581 | } | |
8b2c9824 JB |
582 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
583 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
584 | continue; | |
9607e6b6 | 585 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 586 | iterator(data, sdata->vif.addr, |
2f561feb ID |
587 | &sdata->vif); |
588 | } | |
589 | ||
c7c71066 JB |
590 | sdata = rcu_dereference_check(local->monitor_sdata, |
591 | lockdep_is_held(&local->iflist_mtx) || | |
592 | lockdep_rtnl_is_held()); | |
8b2c9824 JB |
593 | if (sdata && |
594 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
595 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b | 596 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 597 | } |
685fb72b | 598 | |
c7c71066 JB |
599 | void ieee80211_iterate_active_interfaces( |
600 | struct ieee80211_hw *hw, u32 iter_flags, | |
601 | void (*iterator)(void *data, u8 *mac, | |
602 | struct ieee80211_vif *vif), | |
603 | void *data) | |
604 | { | |
605 | struct ieee80211_local *local = hw_to_local(hw); | |
606 | ||
607 | mutex_lock(&local->iflist_mtx); | |
608 | __iterate_active_interfaces(local, iter_flags, iterator, data); | |
c771c9d8 | 609 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
610 | } |
611 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
612 | ||
613 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 614 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
615 | void (*iterator)(void *data, u8 *mac, |
616 | struct ieee80211_vif *vif), | |
617 | void *data) | |
618 | { | |
619 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 620 | |
e38bad47 | 621 | rcu_read_lock(); |
c7c71066 JB |
622 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
623 | rcu_read_unlock(); | |
624 | } | |
625 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 626 | |
c7c71066 JB |
627 | void ieee80211_iterate_active_interfaces_rtnl( |
628 | struct ieee80211_hw *hw, u32 iter_flags, | |
629 | void (*iterator)(void *data, u8 *mac, | |
630 | struct ieee80211_vif *vif), | |
631 | void *data) | |
632 | { | |
633 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 634 | |
c7c71066 | 635 | ASSERT_RTNL(); |
685fb72b | 636 | |
c7c71066 | 637 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
dabeb344 | 638 | } |
c7c71066 | 639 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 640 | |
ad7e718c JB |
641 | struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) |
642 | { | |
643 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
644 | ||
645 | if (!ieee80211_sdata_running(sdata) || | |
646 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
647 | return NULL; | |
648 | return &sdata->vif; | |
649 | } | |
650 | EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); | |
651 | ||
42935eca LR |
652 | /* |
653 | * Nothing should have been stuffed into the workqueue during | |
654 | * the suspend->resume cycle. If this WARN is seen then there | |
655 | * is a bug with either the driver suspend or something in | |
656 | * mac80211 stuffing into the workqueue which we haven't yet | |
657 | * cleared during mac80211's suspend cycle. | |
658 | */ | |
659 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
660 | { | |
ceb99fe0 JB |
661 | if (WARN(local->suspended && !local->resuming, |
662 | "queueing ieee80211 work while going to suspend\n")) | |
663 | return false; | |
42935eca LR |
664 | |
665 | return true; | |
666 | } | |
667 | ||
668 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
669 | { | |
670 | struct ieee80211_local *local = hw_to_local(hw); | |
671 | ||
672 | if (!ieee80211_can_queue_work(local)) | |
673 | return; | |
674 | ||
675 | queue_work(local->workqueue, work); | |
676 | } | |
677 | EXPORT_SYMBOL(ieee80211_queue_work); | |
678 | ||
679 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
680 | struct delayed_work *dwork, | |
681 | unsigned long delay) | |
682 | { | |
683 | struct ieee80211_local *local = hw_to_local(hw); | |
684 | ||
685 | if (!ieee80211_can_queue_work(local)) | |
686 | return; | |
687 | ||
688 | queue_delayed_work(local->workqueue, dwork, delay); | |
689 | } | |
690 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
691 | ||
35d865af | 692 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
693 | struct ieee802_11_elems *elems, |
694 | u64 filter, u32 crc) | |
695 | { | |
696 | size_t left = len; | |
35d865af | 697 | const u8 *pos = start; |
dd76986b | 698 | bool calc_crc = filter != 0; |
fcff4f10 | 699 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 700 | const u8 *ie; |
dd76986b | 701 | |
fcff4f10 | 702 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
703 | memset(elems, 0, sizeof(*elems)); |
704 | elems->ie_start = start; | |
705 | elems->total_len = len; | |
706 | ||
707 | while (left >= 2) { | |
708 | u8 id, elen; | |
fcff4f10 | 709 | bool elem_parse_failed; |
dd76986b JB |
710 | |
711 | id = *pos++; | |
712 | elen = *pos++; | |
713 | left -= 2; | |
714 | ||
fcff4f10 PS |
715 | if (elen > left) { |
716 | elems->parse_error = true; | |
dd76986b | 717 | break; |
fcff4f10 PS |
718 | } |
719 | ||
9690fb16 JB |
720 | switch (id) { |
721 | case WLAN_EID_SSID: | |
722 | case WLAN_EID_SUPP_RATES: | |
723 | case WLAN_EID_FH_PARAMS: | |
724 | case WLAN_EID_DS_PARAMS: | |
725 | case WLAN_EID_CF_PARAMS: | |
726 | case WLAN_EID_TIM: | |
727 | case WLAN_EID_IBSS_PARAMS: | |
728 | case WLAN_EID_CHALLENGE: | |
729 | case WLAN_EID_RSN: | |
730 | case WLAN_EID_ERP_INFO: | |
731 | case WLAN_EID_EXT_SUPP_RATES: | |
732 | case WLAN_EID_HT_CAPABILITY: | |
733 | case WLAN_EID_HT_OPERATION: | |
734 | case WLAN_EID_VHT_CAPABILITY: | |
735 | case WLAN_EID_VHT_OPERATION: | |
736 | case WLAN_EID_MESH_ID: | |
737 | case WLAN_EID_MESH_CONFIG: | |
738 | case WLAN_EID_PEER_MGMT: | |
739 | case WLAN_EID_PREQ: | |
740 | case WLAN_EID_PREP: | |
741 | case WLAN_EID_PERR: | |
742 | case WLAN_EID_RANN: | |
743 | case WLAN_EID_CHANNEL_SWITCH: | |
744 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
745 | case WLAN_EID_COUNTRY: | |
746 | case WLAN_EID_PWR_CONSTRAINT: | |
747 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 748 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf | 749 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
8f2535b9 | 750 | case WLAN_EID_CHAN_SWITCH_PARAM: |
b2e506bf JB |
751 | /* |
752 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
753 | * that if the content gets bigger it might be needed more than once | |
754 | */ | |
9690fb16 JB |
755 | if (test_bit(id, seen_elems)) { |
756 | elems->parse_error = true; | |
757 | left -= elen; | |
758 | pos += elen; | |
759 | continue; | |
760 | } | |
761 | break; | |
fcff4f10 | 762 | } |
dd76986b JB |
763 | |
764 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
765 | crc = crc32_be(crc, pos - 2, elen + 2); | |
766 | ||
fcff4f10 PS |
767 | elem_parse_failed = false; |
768 | ||
dd76986b JB |
769 | switch (id) { |
770 | case WLAN_EID_SSID: | |
771 | elems->ssid = pos; | |
772 | elems->ssid_len = elen; | |
773 | break; | |
774 | case WLAN_EID_SUPP_RATES: | |
775 | elems->supp_rates = pos; | |
776 | elems->supp_rates_len = elen; | |
777 | break; | |
dd76986b | 778 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
779 | if (elen >= 1) |
780 | elems->ds_params = pos; | |
781 | else | |
782 | elem_parse_failed = true; | |
dd76986b | 783 | break; |
dd76986b JB |
784 | case WLAN_EID_TIM: |
785 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
786 | elems->tim = (void *)pos; | |
787 | elems->tim_len = elen; | |
fcff4f10 PS |
788 | } else |
789 | elem_parse_failed = true; | |
dd76986b | 790 | break; |
dd76986b JB |
791 | case WLAN_EID_CHALLENGE: |
792 | elems->challenge = pos; | |
793 | elems->challenge_len = elen; | |
794 | break; | |
795 | case WLAN_EID_VENDOR_SPECIFIC: | |
796 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
797 | pos[2] == 0xf2) { | |
798 | /* Microsoft OUI (00:50:F2) */ | |
799 | ||
800 | if (calc_crc) | |
801 | crc = crc32_be(crc, pos - 2, elen + 2); | |
802 | ||
441a33ba | 803 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
804 | /* OUI Type 2 - WMM IE */ |
805 | if (pos[4] == 0) { | |
806 | elems->wmm_info = pos; | |
807 | elems->wmm_info_len = elen; | |
808 | } else if (pos[4] == 1) { | |
809 | elems->wmm_param = pos; | |
810 | elems->wmm_param_len = elen; | |
811 | } | |
812 | } | |
813 | } | |
814 | break; | |
815 | case WLAN_EID_RSN: | |
816 | elems->rsn = pos; | |
817 | elems->rsn_len = elen; | |
818 | break; | |
819 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
820 | if (elen >= 1) |
821 | elems->erp_info = pos; | |
822 | else | |
823 | elem_parse_failed = true; | |
dd76986b JB |
824 | break; |
825 | case WLAN_EID_EXT_SUPP_RATES: | |
826 | elems->ext_supp_rates = pos; | |
827 | elems->ext_supp_rates_len = elen; | |
828 | break; | |
829 | case WLAN_EID_HT_CAPABILITY: | |
830 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
831 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
832 | else |
833 | elem_parse_failed = true; | |
dd76986b | 834 | break; |
074d46d1 JB |
835 | case WLAN_EID_HT_OPERATION: |
836 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
837 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
838 | else |
839 | elem_parse_failed = true; | |
dd76986b | 840 | break; |
818255ea MP |
841 | case WLAN_EID_VHT_CAPABILITY: |
842 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
843 | elems->vht_cap_elem = (void *)pos; | |
844 | else | |
845 | elem_parse_failed = true; | |
846 | break; | |
847 | case WLAN_EID_VHT_OPERATION: | |
848 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
849 | elems->vht_operation = (void *)pos; | |
850 | else | |
851 | elem_parse_failed = true; | |
852 | break; | |
bee7f586 JB |
853 | case WLAN_EID_OPMODE_NOTIF: |
854 | if (elen > 0) | |
855 | elems->opmode_notif = pos; | |
856 | else | |
857 | elem_parse_failed = true; | |
858 | break; | |
dd76986b JB |
859 | case WLAN_EID_MESH_ID: |
860 | elems->mesh_id = pos; | |
861 | elems->mesh_id_len = elen; | |
862 | break; | |
863 | case WLAN_EID_MESH_CONFIG: | |
864 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
865 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
866 | else |
867 | elem_parse_failed = true; | |
dd76986b JB |
868 | break; |
869 | case WLAN_EID_PEER_MGMT: | |
870 | elems->peering = pos; | |
871 | elems->peering_len = elen; | |
872 | break; | |
3f52b7e3 MP |
873 | case WLAN_EID_MESH_AWAKE_WINDOW: |
874 | if (elen >= 2) | |
875 | elems->awake_window = (void *)pos; | |
876 | break; | |
dd76986b JB |
877 | case WLAN_EID_PREQ: |
878 | elems->preq = pos; | |
879 | elems->preq_len = elen; | |
880 | break; | |
881 | case WLAN_EID_PREP: | |
882 | elems->prep = pos; | |
883 | elems->prep_len = elen; | |
884 | break; | |
885 | case WLAN_EID_PERR: | |
886 | elems->perr = pos; | |
887 | elems->perr_len = elen; | |
888 | break; | |
889 | case WLAN_EID_RANN: | |
890 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
891 | elems->rann = (void *)pos; | |
fcff4f10 PS |
892 | else |
893 | elem_parse_failed = true; | |
dd76986b JB |
894 | break; |
895 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
896 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
897 | elem_parse_failed = true; | |
898 | break; | |
899 | } | |
900 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 901 | break; |
b4f286a1 JB |
902 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
903 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
904 | elem_parse_failed = true; | |
905 | break; | |
906 | } | |
907 | elems->ext_chansw_ie = (void *)pos; | |
908 | break; | |
85220d71 JB |
909 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
910 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
911 | elem_parse_failed = true; | |
912 | break; | |
913 | } | |
914 | elems->sec_chan_offs = (void *)pos; | |
915 | break; | |
8f2535b9 CYY |
916 | case WLAN_EID_CHAN_SWITCH_PARAM: |
917 | if (elen != | |
918 | sizeof(*elems->mesh_chansw_params_ie)) { | |
919 | elem_parse_failed = true; | |
920 | break; | |
921 | } | |
922 | elems->mesh_chansw_params_ie = (void *)pos; | |
923 | break; | |
b2e506bf JB |
924 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
925 | if (!action || | |
926 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
927 | elem_parse_failed = true; | |
928 | break; | |
929 | } | |
930 | elems->wide_bw_chansw_ie = (void *)pos; | |
931 | break; | |
932 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
933 | if (action) { | |
934 | elem_parse_failed = true; | |
935 | break; | |
936 | } | |
937 | /* | |
938 | * This is a bit tricky, but as we only care about | |
939 | * the wide bandwidth channel switch element, so | |
940 | * just parse it out manually. | |
941 | */ | |
942 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
943 | pos, elen); | |
944 | if (ie) { | |
945 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
946 | elems->wide_bw_chansw_ie = | |
947 | (void *)(ie + 2); | |
948 | else | |
949 | elem_parse_failed = true; | |
950 | } | |
951 | break; | |
dd76986b JB |
952 | case WLAN_EID_COUNTRY: |
953 | elems->country_elem = pos; | |
954 | elems->country_elem_len = elen; | |
955 | break; | |
956 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
957 | if (elen != 1) { |
958 | elem_parse_failed = true; | |
959 | break; | |
960 | } | |
dd76986b | 961 | elems->pwr_constr_elem = pos; |
dd76986b JB |
962 | break; |
963 | case WLAN_EID_TIMEOUT_INTERVAL: | |
79ba1d89 JB |
964 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
965 | elems->timeout_int = (void *)pos; | |
966 | else | |
967 | elem_parse_failed = true; | |
dd76986b JB |
968 | break; |
969 | default: | |
970 | break; | |
971 | } | |
972 | ||
fcff4f10 PS |
973 | if (elem_parse_failed) |
974 | elems->parse_error = true; | |
975 | else | |
5df45690 | 976 | __set_bit(id, seen_elems); |
fcff4f10 | 977 | |
dd76986b JB |
978 | left -= elen; |
979 | pos += elen; | |
980 | } | |
981 | ||
fcff4f10 PS |
982 | if (left != 0) |
983 | elems->parse_error = true; | |
984 | ||
dd76986b JB |
985 | return crc; |
986 | } | |
987 | ||
3abead59 JB |
988 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
989 | bool bss_notify) | |
5825fe10 JB |
990 | { |
991 | struct ieee80211_local *local = sdata->local; | |
992 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 993 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 994 | int ac; |
a8ce8544 | 995 | bool use_11b, enable_qos; |
aa837e1d | 996 | int aCWmin, aCWmax; |
5825fe10 JB |
997 | |
998 | if (!local->ops->conf_tx) | |
999 | return; | |
1000 | ||
54bcbc69 JB |
1001 | if (local->hw.queues < IEEE80211_NUM_ACS) |
1002 | return; | |
1003 | ||
5825fe10 JB |
1004 | memset(&qparam, 0, sizeof(qparam)); |
1005 | ||
55de908a JB |
1006 | rcu_read_lock(); |
1007 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1008 | use_11b = (chanctx_conf && | |
4bf88530 | 1009 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 1010 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 1011 | rcu_read_unlock(); |
5825fe10 | 1012 | |
a8ce8544 SG |
1013 | /* |
1014 | * By default disable QoS in STA mode for old access points, which do | |
1015 | * not support 802.11e. New APs will provide proper queue parameters, | |
1016 | * that we will configure later. | |
1017 | */ | |
1018 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
1019 | ||
1f4ffde8 FZ |
1020 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1021 | aCWmax = 1023; | |
1022 | if (use_11b) | |
1023 | aCWmin = 31; | |
1024 | else | |
1025 | aCWmin = 15; | |
1026 | ||
1027 | /* Confiure old 802.11b/g medium access rules. */ | |
1028 | qparam.cw_max = aCWmax; | |
1029 | qparam.cw_min = aCWmin; | |
1030 | qparam.txop = 0; | |
1031 | qparam.aifs = 2; | |
aa837e1d | 1032 | |
1f4ffde8 FZ |
1033 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1034 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1035 | if (enable_qos) { |
1036 | switch (ac) { | |
1037 | case IEEE80211_AC_BK: | |
1038 | qparam.cw_max = aCWmax; | |
1039 | qparam.cw_min = aCWmin; | |
1040 | qparam.txop = 0; | |
1041 | qparam.aifs = 7; | |
1042 | break; | |
1043 | /* never happens but let's not leave undefined */ | |
1044 | default: | |
1045 | case IEEE80211_AC_BE: | |
1046 | qparam.cw_max = aCWmax; | |
1047 | qparam.cw_min = aCWmin; | |
1048 | qparam.txop = 0; | |
1049 | qparam.aifs = 3; | |
1050 | break; | |
1051 | case IEEE80211_AC_VI: | |
1052 | qparam.cw_max = aCWmin; | |
1053 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
1054 | if (use_11b) | |
1055 | qparam.txop = 6016/32; | |
1056 | else | |
1057 | qparam.txop = 3008/32; | |
1058 | qparam.aifs = 2; | |
1059 | break; | |
1060 | case IEEE80211_AC_VO: | |
1061 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1062 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
1063 | if (use_11b) | |
1064 | qparam.txop = 3264/32; | |
1065 | else | |
1066 | qparam.txop = 1504/32; | |
1067 | qparam.aifs = 2; | |
1068 | break; | |
1069 | } | |
aa837e1d | 1070 | } |
5825fe10 | 1071 | |
ab13315a KV |
1072 | qparam.uapsd = false; |
1073 | ||
54bcbc69 JB |
1074 | sdata->tx_conf[ac] = qparam; |
1075 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1076 | } |
e1b3ec1a | 1077 | |
f142c6b9 JB |
1078 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1079 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1080 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1081 | if (bss_notify) |
1082 | ieee80211_bss_info_change_notify(sdata, | |
1083 | BSS_CHANGED_QOS); | |
d9734979 | 1084 | } |
5825fe10 | 1085 | } |
e50db65c | 1086 | |
46900298 | 1087 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1088 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1089 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1090 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1091 | u32 tx_flags) | |
46900298 JB |
1092 | { |
1093 | struct ieee80211_local *local = sdata->local; | |
1094 | struct sk_buff *skb; | |
1095 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1096 | int err; |
46900298 | 1097 | |
15e230ab FZ |
1098 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
1099 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 6 + extra_len); | |
d15b8459 | 1100 | if (!skb) |
46900298 | 1101 | return; |
d15b8459 | 1102 | |
46900298 JB |
1103 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1104 | ||
1105 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1106 | memset(mgmt, 0, 24 + 6); | |
1107 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1108 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1109 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1110 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1111 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1112 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1113 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1114 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1115 | if (extra) |
1116 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1117 | |
fffd0934 JB |
1118 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1119 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1120 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1121 | WARN_ON(err); | |
1122 | } | |
1123 | ||
1672c0e3 JB |
1124 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1125 | tx_flags; | |
62ae67be | 1126 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1127 | } |
1128 | ||
6ae16775 AQ |
1129 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1130 | const u8 *bssid, u16 stype, u16 reason, | |
1131 | bool send_frame, u8 *frame_buf) | |
1132 | { | |
1133 | struct ieee80211_local *local = sdata->local; | |
1134 | struct sk_buff *skb; | |
1135 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1136 | ||
1137 | /* build frame */ | |
1138 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1139 | mgmt->duration = 0; /* initialize only */ | |
1140 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1141 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1142 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1143 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1144 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1145 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1146 | ||
1147 | if (send_frame) { | |
1148 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1149 | IEEE80211_DEAUTH_FRAME_LEN); | |
1150 | if (!skb) | |
1151 | return; | |
1152 | ||
1153 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1154 | ||
1155 | /* copy in frame */ | |
1156 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1157 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1158 | ||
1159 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1160 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1161 | IEEE80211_SKB_CB(skb)->flags |= | |
1162 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1163 | ||
1164 | ieee80211_tx_skb(sdata, skb); | |
1165 | } | |
1166 | } | |
1167 | ||
de95a54b | 1168 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
c604b9f2 | 1169 | size_t buffer_len, const u8 *ie, size_t ie_len, |
651b5225 | 1170 | enum ieee80211_band band, u32 rate_mask, |
2103dec1 | 1171 | struct cfg80211_chan_def *chandef) |
de95a54b JB |
1172 | { |
1173 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1174 | u8 *pos = buffer, *end = buffer + buffer_len; |
8e664fb3 JB |
1175 | size_t offset = 0, noffset; |
1176 | int supp_rates_len, i; | |
8dcb2003 JM |
1177 | u8 rates[32]; |
1178 | int num_rates; | |
1179 | int ext_rates_len; | |
2103dec1 SW |
1180 | int shift; |
1181 | u32 rate_flags; | |
de95a54b | 1182 | |
4d36ec58 | 1183 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1184 | if (WARN_ON_ONCE(!sband)) |
1185 | return 0; | |
de95a54b | 1186 | |
2103dec1 SW |
1187 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1188 | shift = ieee80211_chandef_get_shift(chandef); | |
1189 | ||
8dcb2003 JM |
1190 | num_rates = 0; |
1191 | for (i = 0; i < sband->n_bitrates; i++) { | |
1192 | if ((BIT(i) & rate_mask) == 0) | |
1193 | continue; /* skip rate */ | |
2103dec1 SW |
1194 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1195 | continue; | |
1196 | ||
1197 | rates[num_rates++] = | |
1198 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1199 | (1 << shift) * 5); | |
8dcb2003 JM |
1200 | } |
1201 | ||
1202 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1203 | |
c604b9f2 JB |
1204 | if (end - pos < 2 + supp_rates_len) |
1205 | goto out_err; | |
de95a54b | 1206 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1207 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1208 | memcpy(pos, rates, supp_rates_len); |
1209 | pos += supp_rates_len; | |
8e664fb3 JB |
1210 | |
1211 | /* insert "request information" if in custom IEs */ | |
1212 | if (ie && ie_len) { | |
1213 | static const u8 before_extrates[] = { | |
1214 | WLAN_EID_SSID, | |
1215 | WLAN_EID_SUPP_RATES, | |
1216 | WLAN_EID_REQUEST, | |
1217 | }; | |
1218 | noffset = ieee80211_ie_split(ie, ie_len, | |
1219 | before_extrates, | |
1220 | ARRAY_SIZE(before_extrates), | |
1221 | offset); | |
c604b9f2 JB |
1222 | if (end - pos < noffset - offset) |
1223 | goto out_err; | |
8e664fb3 JB |
1224 | memcpy(pos, ie + offset, noffset - offset); |
1225 | pos += noffset - offset; | |
1226 | offset = noffset; | |
1227 | } | |
1228 | ||
8dcb2003 JM |
1229 | ext_rates_len = num_rates - supp_rates_len; |
1230 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1231 | if (end - pos < 2 + ext_rates_len) |
1232 | goto out_err; | |
8e664fb3 | 1233 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1234 | *pos++ = ext_rates_len; |
1235 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1236 | pos += ext_rates_len; | |
8e664fb3 JB |
1237 | } |
1238 | ||
2103dec1 | 1239 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1240 | if (end - pos < 3) |
1241 | goto out_err; | |
651b5225 JM |
1242 | *pos++ = WLAN_EID_DS_PARAMS; |
1243 | *pos++ = 1; | |
2103dec1 SW |
1244 | *pos++ = ieee80211_frequency_to_channel( |
1245 | chandef->chan->center_freq); | |
651b5225 JM |
1246 | } |
1247 | ||
8e664fb3 JB |
1248 | /* insert custom IEs that go before HT */ |
1249 | if (ie && ie_len) { | |
1250 | static const u8 before_ht[] = { | |
1251 | WLAN_EID_SSID, | |
1252 | WLAN_EID_SUPP_RATES, | |
1253 | WLAN_EID_REQUEST, | |
1254 | WLAN_EID_EXT_SUPP_RATES, | |
1255 | WLAN_EID_DS_PARAMS, | |
1256 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1257 | }; | |
1258 | noffset = ieee80211_ie_split(ie, ie_len, | |
1259 | before_ht, ARRAY_SIZE(before_ht), | |
1260 | offset); | |
c604b9f2 JB |
1261 | if (end - pos < noffset - offset) |
1262 | goto out_err; | |
8e664fb3 JB |
1263 | memcpy(pos, ie + offset, noffset - offset); |
1264 | pos += noffset - offset; | |
1265 | offset = noffset; | |
de95a54b JB |
1266 | } |
1267 | ||
c604b9f2 JB |
1268 | if (sband->ht_cap.ht_supported) { |
1269 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1270 | goto out_err; | |
ef96a842 BG |
1271 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1272 | sband->ht_cap.cap); | |
c604b9f2 | 1273 | } |
5ef2d41a | 1274 | |
de95a54b JB |
1275 | /* |
1276 | * If adding more here, adjust code in main.c | |
1277 | * that calculates local->scan_ies_len. | |
1278 | */ | |
1279 | ||
4d952300 | 1280 | /* insert custom IEs that go before VHT */ |
8e664fb3 | 1281 | if (ie && ie_len) { |
4d952300 JB |
1282 | static const u8 before_vht[] = { |
1283 | WLAN_EID_SSID, | |
1284 | WLAN_EID_SUPP_RATES, | |
1285 | WLAN_EID_REQUEST, | |
1286 | WLAN_EID_EXT_SUPP_RATES, | |
1287 | WLAN_EID_DS_PARAMS, | |
1288 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1289 | WLAN_EID_HT_CAPABILITY, | |
1290 | WLAN_EID_BSS_COEX_2040, | |
1291 | WLAN_EID_EXT_CAPABILITY, | |
1292 | WLAN_EID_SSID_LIST, | |
1293 | WLAN_EID_CHANNEL_USAGE, | |
1294 | WLAN_EID_INTERWORKING, | |
1295 | /* mesh ID can't happen here */ | |
1296 | /* 60 GHz can't happen here right now */ | |
1297 | }; | |
1298 | noffset = ieee80211_ie_split(ie, ie_len, | |
1299 | before_vht, ARRAY_SIZE(before_vht), | |
1300 | offset); | |
c604b9f2 JB |
1301 | if (end - pos < noffset - offset) |
1302 | goto out_err; | |
8e664fb3 JB |
1303 | memcpy(pos, ie + offset, noffset - offset); |
1304 | pos += noffset - offset; | |
4d952300 | 1305 | offset = noffset; |
de95a54b JB |
1306 | } |
1307 | ||
c604b9f2 JB |
1308 | if (sband->vht_cap.vht_supported) { |
1309 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) | |
1310 | goto out_err; | |
ba0afa2f MP |
1311 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1312 | sband->vht_cap.cap); | |
c604b9f2 | 1313 | } |
ba0afa2f | 1314 | |
4d952300 JB |
1315 | /* add any remaining custom IEs */ |
1316 | if (ie && ie_len) { | |
1317 | noffset = ie_len; | |
1318 | if (end - pos < noffset - offset) | |
1319 | goto out_err; | |
1320 | memcpy(pos, ie + offset, noffset - offset); | |
1321 | pos += noffset - offset; | |
1322 | } | |
1323 | ||
c604b9f2 JB |
1324 | return pos - buffer; |
1325 | out_err: | |
1326 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1327 | return pos - buffer; |
1328 | } | |
1329 | ||
a619a4c0 | 1330 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
85a237fe | 1331 | u8 *dst, u32 ratemask, |
6b77863b | 1332 | struct ieee80211_channel *chan, |
a619a4c0 | 1333 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1334 | const u8 *ie, size_t ie_len, |
1335 | bool directed) | |
46900298 JB |
1336 | { |
1337 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1338 | struct cfg80211_chan_def chandef; |
46900298 JB |
1339 | struct sk_buff *skb; |
1340 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1341 | int ies_len; |
46900298 | 1342 | |
a806c558 PS |
1343 | /* |
1344 | * Do not send DS Channel parameter for directed probe requests | |
1345 | * in order to maximize the chance that we get a response. Some | |
1346 | * badly-behaved APs don't respond when this parameter is included. | |
1347 | */ | |
2103dec1 | 1348 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1349 | if (directed) |
2103dec1 | 1350 | chandef.chan = NULL; |
a806c558 | 1351 | else |
2103dec1 | 1352 | chandef.chan = chan; |
651b5225 | 1353 | |
7c12ce8b | 1354 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
b9a9ada1 | 1355 | ssid, ssid_len, 100 + ie_len); |
5b2bbf75 | 1356 | if (!skb) |
b9a9ada1 JB |
1357 | return NULL; |
1358 | ||
1359 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), | |
1360 | skb_tailroom(skb), | |
1361 | ie, ie_len, chan->band, | |
2103dec1 | 1362 | ratemask, &chandef); |
b9a9ada1 | 1363 | skb_put(skb, ies_len); |
7c12ce8b | 1364 | |
46900298 | 1365 | if (dst) { |
7c12ce8b | 1366 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1367 | memcpy(mgmt->da, dst, ETH_ALEN); |
1368 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1369 | } |
46900298 | 1370 | |
62ae67be | 1371 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1372 | |
a619a4c0 JO |
1373 | return skb; |
1374 | } | |
1375 | ||
1376 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1377 | const u8 *ssid, size_t ssid_len, | |
a806c558 | 1378 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1379 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1380 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1381 | { |
1382 | struct sk_buff *skb; | |
1383 | ||
fe94fe05 | 1384 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
6b77863b | 1385 | ssid, ssid_len, |
85a237fe | 1386 | ie, ie_len, directed); |
aad14ceb | 1387 | if (skb) { |
1672c0e3 | 1388 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1389 | if (scan) |
1390 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1391 | else | |
1392 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1393 | } |
46900298 JB |
1394 | } |
1395 | ||
2103dec1 | 1396 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1397 | struct ieee802_11_elems *elems, |
9ebb61a2 | 1398 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1399 | { |
1400 | struct ieee80211_supported_band *sband; | |
46900298 | 1401 | size_t num_rates; |
2103dec1 SW |
1402 | u32 supp_rates, rate_flags; |
1403 | int i, j, shift; | |
1404 | sband = sdata->local->hw.wiphy->bands[band]; | |
1405 | ||
1406 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1407 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1408 | |
4ee73f33 MK |
1409 | if (WARN_ON(!sband)) |
1410 | return 1; | |
46900298 | 1411 | |
46900298 JB |
1412 | num_rates = sband->n_bitrates; |
1413 | supp_rates = 0; | |
1414 | for (i = 0; i < elems->supp_rates_len + | |
1415 | elems->ext_supp_rates_len; i++) { | |
1416 | u8 rate = 0; | |
1417 | int own_rate; | |
9ebb61a2 | 1418 | bool is_basic; |
46900298 JB |
1419 | if (i < elems->supp_rates_len) |
1420 | rate = elems->supp_rates[i]; | |
1421 | else if (elems->ext_supp_rates) | |
1422 | rate = elems->ext_supp_rates | |
1423 | [i - elems->supp_rates_len]; | |
1424 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1425 | is_basic = !!(rate & 0x80); |
1426 | ||
1427 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1428 | continue; | |
1429 | ||
1430 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1431 | int brate; |
1432 | if ((rate_flags & sband->bitrates[j].flags) | |
1433 | != rate_flags) | |
1434 | continue; | |
1435 | ||
1436 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1437 | 1 << shift); | |
1438 | ||
1439 | if (brate == own_rate) { | |
46900298 | 1440 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1441 | if (basic_rates && is_basic) |
1442 | *basic_rates |= BIT(j); | |
1443 | } | |
1444 | } | |
46900298 JB |
1445 | } |
1446 | return supp_rates; | |
1447 | } | |
f2753ddb | 1448 | |
84f6a01c JB |
1449 | void ieee80211_stop_device(struct ieee80211_local *local) |
1450 | { | |
1451 | ieee80211_led_radio(local, false); | |
67408c8c | 1452 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1453 | |
1454 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1455 | |
1456 | flush_workqueue(local->workqueue); | |
678f415f | 1457 | drv_stop(local); |
84f6a01c JB |
1458 | } |
1459 | ||
f6837ba8 JB |
1460 | static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) |
1461 | { | |
1462 | struct ieee80211_sub_if_data *sdata; | |
1463 | struct ieee80211_chanctx *ctx; | |
1464 | ||
1465 | /* | |
1466 | * We get here if during resume the device can't be restarted properly. | |
1467 | * We might also get here if this happens during HW reset, which is a | |
1468 | * slightly different situation and we need to drop all connections in | |
1469 | * the latter case. | |
1470 | * | |
1471 | * Ask cfg80211 to turn off all interfaces, this will result in more | |
1472 | * warnings but at least we'll then get into a clean stopped state. | |
1473 | */ | |
1474 | ||
1475 | local->resuming = false; | |
1476 | local->suspended = false; | |
1477 | local->started = false; | |
1478 | ||
1479 | /* scheduled scan clearly can't be running any more, but tell | |
1480 | * cfg80211 and clear local state | |
1481 | */ | |
1482 | ieee80211_sched_scan_end(local); | |
1483 | ||
1484 | list_for_each_entry(sdata, &local->interfaces, list) | |
1485 | sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; | |
1486 | ||
1487 | /* Mark channel contexts as not being in the driver any more to avoid | |
1488 | * removing them from the driver during the shutdown process... | |
1489 | */ | |
1490 | mutex_lock(&local->chanctx_mtx); | |
1491 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1492 | ctx->driver_present = false; | |
1493 | mutex_unlock(&local->chanctx_mtx); | |
1494 | ||
1495 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); | |
1496 | } | |
1497 | ||
153a5fc4 SG |
1498 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1499 | struct ieee80211_sub_if_data *sdata) | |
1500 | { | |
1501 | struct ieee80211_chanctx_conf *conf; | |
1502 | struct ieee80211_chanctx *ctx; | |
1503 | ||
1504 | if (!local->use_chanctx) | |
1505 | return; | |
1506 | ||
1507 | mutex_lock(&local->chanctx_mtx); | |
1508 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1509 | lockdep_is_held(&local->chanctx_mtx)); | |
1510 | if (conf) { | |
1511 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1512 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1513 | } | |
1514 | mutex_unlock(&local->chanctx_mtx); | |
1515 | } | |
1516 | ||
f2753ddb JB |
1517 | int ieee80211_reconfig(struct ieee80211_local *local) |
1518 | { | |
1519 | struct ieee80211_hw *hw = &local->hw; | |
1520 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1521 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1522 | struct sta_info *sta; |
2683d65b | 1523 | int res, i; |
d888130a | 1524 | bool reconfig_due_to_wowlan = false; |
d43c6b6e DS |
1525 | struct ieee80211_sub_if_data *sched_scan_sdata; |
1526 | bool sched_scan_stopped = false; | |
d888130a | 1527 | |
8f21b0ad | 1528 | #ifdef CONFIG_PM |
ceb99fe0 JB |
1529 | if (local->suspended) |
1530 | local->resuming = true; | |
f2753ddb | 1531 | |
eecc4800 | 1532 | if (local->wowlan) { |
eecc4800 | 1533 | res = drv_resume(local); |
27b3eb9c | 1534 | local->wowlan = false; |
eecc4800 JB |
1535 | if (res < 0) { |
1536 | local->resuming = false; | |
1537 | return res; | |
1538 | } | |
1539 | if (res == 0) | |
1540 | goto wake_up; | |
1541 | WARN_ON(res > 1); | |
1542 | /* | |
1543 | * res is 1, which means the driver requested | |
1544 | * to go through a regular reset on wakeup. | |
1545 | */ | |
d888130a | 1546 | reconfig_due_to_wowlan = true; |
eecc4800 JB |
1547 | } |
1548 | #endif | |
94f9b97b JB |
1549 | /* everything else happens only if HW was up & running */ |
1550 | if (!local->open_count) | |
1551 | goto wake_up; | |
f2753ddb | 1552 | |
94f9b97b JB |
1553 | /* |
1554 | * Upon resume hardware can sometimes be goofy due to | |
1555 | * various platform / driver / bus issues, so restarting | |
1556 | * the device may at times not work immediately. Propagate | |
1557 | * the error. | |
1558 | */ | |
1559 | res = drv_start(local); | |
1560 | if (res) { | |
f6837ba8 JB |
1561 | if (local->suspended) |
1562 | WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); | |
1563 | else | |
1564 | WARN(1, "Hardware became unavailable during restart.\n"); | |
1565 | ieee80211_handle_reconfig_failure(local); | |
94f9b97b | 1566 | return res; |
f2753ddb JB |
1567 | } |
1568 | ||
7f281975 YAP |
1569 | /* setup fragmentation threshold */ |
1570 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1571 | ||
1572 | /* setup RTS threshold */ | |
1573 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1574 | ||
1575 | /* reset coverage class */ | |
1576 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1577 | ||
94f9b97b JB |
1578 | ieee80211_led_radio(local, true); |
1579 | ieee80211_mod_tpt_led_trig(local, | |
1580 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1581 | ||
f2753ddb | 1582 | /* add interfaces */ |
4b6f1dd6 JB |
1583 | sdata = rtnl_dereference(local->monitor_sdata); |
1584 | if (sdata) { | |
3c3e21e7 JB |
1585 | /* in HW restart it exists already */ |
1586 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1587 | res = drv_add_interface(local, sdata); |
1588 | if (WARN_ON(res)) { | |
0c2bef46 | 1589 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
4b6f1dd6 JB |
1590 | synchronize_net(); |
1591 | kfree(sdata); | |
1592 | } | |
1593 | } | |
1594 | ||
f2753ddb JB |
1595 | list_for_each_entry(sdata, &local->interfaces, list) { |
1596 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1597 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1ed32e4f | 1598 | ieee80211_sdata_running(sdata)) |
7b7eab6f | 1599 | res = drv_add_interface(local, sdata); |
f2753ddb JB |
1600 | } |
1601 | ||
55de908a | 1602 | /* add channel contexts */ |
f0dea9c7 AS |
1603 | if (local->use_chanctx) { |
1604 | mutex_lock(&local->chanctx_mtx); | |
1605 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1606 | WARN_ON(drv_add_chanctx(local, ctx)); | |
1607 | mutex_unlock(&local->chanctx_mtx); | |
55de908a | 1608 | |
7df180f7 ZG |
1609 | list_for_each_entry(sdata, &local->interfaces, list) { |
1610 | if (!ieee80211_sdata_running(sdata)) | |
1611 | continue; | |
1612 | ieee80211_assign_chanctx(local, sdata); | |
1613 | } | |
6352c87f | 1614 | |
7df180f7 ZG |
1615 | sdata = rtnl_dereference(local->monitor_sdata); |
1616 | if (sdata && ieee80211_sdata_running(sdata)) | |
1617 | ieee80211_assign_chanctx(local, sdata); | |
1618 | } | |
fe5f2559 | 1619 | |
f2753ddb | 1620 | /* add STAs back */ |
34e89507 JB |
1621 | mutex_lock(&local->sta_mtx); |
1622 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1623 | enum ieee80211_sta_state state; |
f09603a2 | 1624 | |
2e8d397e AN |
1625 | if (!sta->uploaded) |
1626 | continue; | |
1627 | ||
1628 | /* AP-mode stations will be added later */ | |
1629 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1630 | continue; | |
1631 | ||
1632 | for (state = IEEE80211_STA_NOTEXIST; | |
1633 | state < sta->sta_state; state++) | |
1634 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1635 | state + 1)); | |
f2753ddb | 1636 | } |
34e89507 | 1637 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1638 | |
2683d65b | 1639 | /* reconfigure tx conf */ |
54bcbc69 JB |
1640 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1641 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1642 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1643 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1644 | !ieee80211_sdata_running(sdata)) | |
1645 | continue; | |
f6f3def3 | 1646 | |
54bcbc69 JB |
1647 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1648 | drv_conf_tx(local, sdata, i, | |
1649 | &sdata->tx_conf[i]); | |
1650 | } | |
f6f3def3 | 1651 | } |
2683d65b | 1652 | |
f2753ddb JB |
1653 | /* reconfigure hardware */ |
1654 | ieee80211_hw_config(local, ~0); | |
1655 | ||
f2753ddb | 1656 | ieee80211_configure_filter(local); |
f2753ddb JB |
1657 | |
1658 | /* Finally also reconfigure all the BSS information */ | |
1659 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1660 | u32 changed; |
1661 | ||
9607e6b6 | 1662 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1663 | continue; |
ac8dd506 JB |
1664 | |
1665 | /* common change flags for all interface types */ | |
1666 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1667 | BSS_CHANGED_ERP_PREAMBLE | | |
1668 | BSS_CHANGED_ERP_SLOT | | |
1669 | BSS_CHANGED_HT | | |
1670 | BSS_CHANGED_BASIC_RATES | | |
1671 | BSS_CHANGED_BEACON_INT | | |
1672 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1673 | BSS_CHANGED_CQM | |
55de47f6 | 1674 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1675 | BSS_CHANGED_IDLE | |
1676 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1677 | |
f2753ddb JB |
1678 | switch (sdata->vif.type) { |
1679 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1680 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1681 | BSS_CHANGED_ARP_FILTER | |
1682 | BSS_CHANGED_PS; | |
c65dd147 | 1683 | |
989c6505 AB |
1684 | /* Re-send beacon info report to the driver */ |
1685 | if (sdata->u.mgd.have_beacon) | |
1686 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1687 | |
8d61ffa5 | 1688 | sdata_lock(sdata); |
ac8dd506 | 1689 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1690 | sdata_unlock(sdata); |
ac8dd506 | 1691 | break; |
f2753ddb | 1692 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1693 | changed |= BSS_CHANGED_IBSS; |
1694 | /* fall through */ | |
f2753ddb | 1695 | case NL80211_IFTYPE_AP: |
339afbf4 | 1696 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1697 | |
1041638f | 1698 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1699 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1700 | ||
1041638f JB |
1701 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1702 | drv_start_ap(local, sdata); | |
1703 | } | |
1704 | ||
7827493b | 1705 | /* fall through */ |
f2753ddb | 1706 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1707 | if (sdata->vif.bss_conf.enable_beacon) { |
1708 | changed |= BSS_CHANGED_BEACON | | |
1709 | BSS_CHANGED_BEACON_ENABLED; | |
1710 | ieee80211_bss_info_change_notify(sdata, changed); | |
1711 | } | |
f2753ddb JB |
1712 | break; |
1713 | case NL80211_IFTYPE_WDS: | |
f2753ddb JB |
1714 | case NL80211_IFTYPE_AP_VLAN: |
1715 | case NL80211_IFTYPE_MONITOR: | |
98104fde | 1716 | case NL80211_IFTYPE_P2P_DEVICE: |
b205786e | 1717 | /* nothing to do */ |
f142c6b9 | 1718 | break; |
f2753ddb | 1719 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1720 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1721 | case NL80211_IFTYPE_P2P_CLIENT: |
1722 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1723 | WARN_ON(1); |
1724 | break; | |
1725 | } | |
1726 | } | |
1727 | ||
8e1b23b9 ES |
1728 | ieee80211_recalc_ps(local, -1); |
1729 | ||
6e1b1b24 EP |
1730 | /* |
1731 | * The sta might be in psm against the ap (e.g. because | |
1732 | * this was the state before a hw restart), so we | |
1733 | * explicitly send a null packet in order to make sure | |
1734 | * it'll sync against the ap (and get out of psm). | |
1735 | */ | |
1736 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1737 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1738 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1739 | continue; | |
20f544ee JB |
1740 | if (!sdata->u.mgd.associated) |
1741 | continue; | |
6e1b1b24 EP |
1742 | |
1743 | ieee80211_send_nullfunc(local, sdata, 0); | |
1744 | } | |
1745 | } | |
1746 | ||
2e8d397e AN |
1747 | /* APs are now beaconing, add back stations */ |
1748 | mutex_lock(&local->sta_mtx); | |
1749 | list_for_each_entry(sta, &local->sta_list, list) { | |
1750 | enum ieee80211_sta_state state; | |
1751 | ||
1752 | if (!sta->uploaded) | |
1753 | continue; | |
1754 | ||
1755 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1756 | continue; | |
1757 | ||
1758 | for (state = IEEE80211_STA_NOTEXIST; | |
1759 | state < sta->sta_state; state++) | |
1760 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1761 | state + 1)); | |
1762 | } | |
1763 | mutex_unlock(&local->sta_mtx); | |
1764 | ||
7b21aea0 ES |
1765 | /* add back keys */ |
1766 | list_for_each_entry(sdata, &local->interfaces, list) | |
1767 | if (ieee80211_sdata_running(sdata)) | |
1768 | ieee80211_enable_keys(sdata); | |
1769 | ||
c6209488 | 1770 | wake_up: |
04800ada AN |
1771 | local->in_reconfig = false; |
1772 | barrier(); | |
1773 | ||
3c3e21e7 JB |
1774 | if (local->monitors == local->open_count && local->monitors > 0) |
1775 | ieee80211_add_virtual_monitor(local); | |
1776 | ||
2a419056 JB |
1777 | /* |
1778 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
1779 | * sessions can be established after a resume. | |
1780 | * | |
1781 | * Also tear down aggregation sessions since reconfiguring | |
1782 | * them in a hardware restart scenario is not easily done | |
1783 | * right now, and the hardware will have lost information | |
1784 | * about the sessions, but we and the AP still think they | |
1785 | * are active. This is really a workaround though. | |
1786 | */ | |
74e2bd1f | 1787 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
2a419056 JB |
1788 | mutex_lock(&local->sta_mtx); |
1789 | ||
1790 | list_for_each_entry(sta, &local->sta_list, list) { | |
c82c4a80 JB |
1791 | ieee80211_sta_tear_down_BA_sessions( |
1792 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 1793 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 1794 | } |
2a419056 JB |
1795 | |
1796 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 1797 | } |
74e2bd1f | 1798 | |
445ea4e8 JB |
1799 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
1800 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
f2753ddb | 1801 | |
32769814 AN |
1802 | /* |
1803 | * Reconfigure sched scan if it was interrupted by FW restart or | |
1804 | * suspend. | |
1805 | */ | |
1806 | mutex_lock(&local->mtx); | |
1807 | sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, | |
1808 | lockdep_is_held(&local->mtx)); | |
1809 | if (sched_scan_sdata && local->sched_scan_req) | |
1810 | /* | |
1811 | * Sched scan stopped, but we don't want to report it. Instead, | |
1812 | * we're trying to reschedule. | |
1813 | */ | |
1814 | if (__ieee80211_request_sched_scan_start(sched_scan_sdata, | |
1815 | local->sched_scan_req)) | |
1816 | sched_scan_stopped = true; | |
1817 | mutex_unlock(&local->mtx); | |
1818 | ||
1819 | if (sched_scan_stopped) | |
e669ba2d | 1820 | cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); |
32769814 | 1821 | |
5bb644a0 JB |
1822 | /* |
1823 | * If this is for hw restart things are still running. | |
1824 | * We may want to change that later, however. | |
1825 | */ | |
8f21b0ad | 1826 | if (!local->suspended || reconfig_due_to_wowlan) |
9214ad7f | 1827 | drv_restart_complete(local); |
8f21b0ad JB |
1828 | |
1829 | if (!local->suspended) | |
5bb644a0 JB |
1830 | return 0; |
1831 | ||
1832 | #ifdef CONFIG_PM | |
ceb99fe0 | 1833 | /* first set suspended false, then resuming */ |
5bb644a0 | 1834 | local->suspended = false; |
ceb99fe0 JB |
1835 | mb(); |
1836 | local->resuming = false; | |
5bb644a0 | 1837 | |
b8360ab8 JB |
1838 | list_for_each_entry(sdata, &local->interfaces, list) { |
1839 | if (!ieee80211_sdata_running(sdata)) | |
1840 | continue; | |
1841 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1842 | ieee80211_sta_restart(sdata); | |
1843 | } | |
1844 | ||
26d59535 | 1845 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
1846 | #else |
1847 | WARN_ON(1); | |
1848 | #endif | |
d43c6b6e | 1849 | |
f2753ddb JB |
1850 | return 0; |
1851 | } | |
42935eca | 1852 | |
95acac61 JB |
1853 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
1854 | { | |
1855 | struct ieee80211_sub_if_data *sdata; | |
1856 | struct ieee80211_local *local; | |
1857 | struct ieee80211_key *key; | |
1858 | ||
1859 | if (WARN_ON(!vif)) | |
1860 | return; | |
1861 | ||
1862 | sdata = vif_to_sdata(vif); | |
1863 | local = sdata->local; | |
1864 | ||
1865 | if (WARN_ON(!local->resuming)) | |
1866 | return; | |
1867 | ||
1868 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
1869 | return; | |
1870 | ||
1871 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
1872 | ||
1873 | mutex_lock(&local->key_mtx); | |
1874 | list_for_each_entry(key, &sdata->key_list, list) | |
1875 | key->flags |= KEY_FLAG_TAINTED; | |
1876 | mutex_unlock(&local->key_mtx); | |
1877 | } | |
1878 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
1879 | ||
04ecd257 | 1880 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 1881 | { |
04ecd257 JB |
1882 | struct ieee80211_local *local = sdata->local; |
1883 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1884 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 1885 | |
04ecd257 | 1886 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 1887 | |
04ecd257 JB |
1888 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1889 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 1890 | |
04ecd257 | 1891 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 1892 | goto unlock; |
0f78231b | 1893 | |
04ecd257 JB |
1894 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
1895 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 1896 | unlock: |
04ecd257 | 1897 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 1898 | } |
8e664fb3 | 1899 | |
21f659bf EP |
1900 | void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) |
1901 | { | |
1902 | struct ieee80211_local *local = sdata->local; | |
1903 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1904 | struct ieee80211_chanctx *chanctx; | |
1905 | ||
1906 | mutex_lock(&local->chanctx_mtx); | |
1907 | ||
1908 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1909 | lockdep_is_held(&local->chanctx_mtx)); | |
1910 | ||
1911 | if (WARN_ON_ONCE(!chanctx_conf)) | |
1912 | goto unlock; | |
1913 | ||
1914 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); | |
1915 | ieee80211_recalc_chanctx_min_def(local, chanctx); | |
1916 | unlock: | |
1917 | mutex_unlock(&local->chanctx_mtx); | |
1918 | } | |
1919 | ||
8e664fb3 JB |
1920 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) |
1921 | { | |
1922 | int i; | |
1923 | ||
1924 | for (i = 0; i < n_ids; i++) | |
1925 | if (ids[i] == id) | |
1926 | return true; | |
1927 | return false; | |
1928 | } | |
1929 | ||
1930 | /** | |
1931 | * ieee80211_ie_split - split an IE buffer according to ordering | |
1932 | * | |
1933 | * @ies: the IE buffer | |
1934 | * @ielen: the length of the IE buffer | |
1935 | * @ids: an array with element IDs that are allowed before | |
1936 | * the split | |
1937 | * @n_ids: the size of the element ID array | |
1938 | * @offset: offset where to start splitting in the buffer | |
1939 | * | |
1940 | * This function splits an IE buffer by updating the @offset | |
1941 | * variable to point to the location where the buffer should be | |
1942 | * split. | |
1943 | * | |
1944 | * It assumes that the given IE buffer is well-formed, this | |
1945 | * has to be guaranteed by the caller! | |
1946 | * | |
1947 | * It also assumes that the IEs in the buffer are ordered | |
1948 | * correctly, if not the result of using this function will not | |
1949 | * be ordered correctly either, i.e. it does no reordering. | |
1950 | * | |
1951 | * The function returns the offset where the next part of the | |
1952 | * buffer starts, which may be @ielen if the entire (remainder) | |
1953 | * of the buffer should be used. | |
1954 | */ | |
1955 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1956 | const u8 *ids, int n_ids, size_t offset) | |
1957 | { | |
1958 | size_t pos = offset; | |
1959 | ||
1960 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) | |
1961 | pos += 2 + ies[pos + 1]; | |
1962 | ||
1963 | return pos; | |
1964 | } | |
1965 | ||
1966 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) | |
1967 | { | |
1968 | size_t pos = offset; | |
1969 | ||
1970 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
1971 | pos += 2 + ies[pos + 1]; | |
1972 | ||
1973 | return pos; | |
1974 | } | |
615f7b9b MV |
1975 | |
1976 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
1977 | int rssi_min_thold, | |
1978 | int rssi_max_thold) | |
1979 | { | |
1980 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
1981 | ||
1982 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1983 | return; | |
1984 | ||
1985 | /* | |
1986 | * Scale up threshold values before storing it, as the RSSI averaging | |
1987 | * algorithm uses a scaled up value as well. Change this scaling | |
1988 | * factor if the RSSI averaging algorithm changes. | |
1989 | */ | |
1990 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
1991 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
1992 | } | |
1993 | ||
1994 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
1995 | int rssi_min_thold, | |
1996 | int rssi_max_thold) | |
1997 | { | |
1998 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1999 | ||
2000 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
2001 | rssi_min_thold > rssi_max_thold); | |
2002 | ||
2003 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
2004 | rssi_max_thold); | |
2005 | } | |
2006 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
2007 | ||
2008 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
2009 | { | |
2010 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2011 | ||
2012 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
2013 | } | |
2014 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 2015 | |
ef96a842 | 2016 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
2017 | u16 cap) |
2018 | { | |
2019 | __le16 tmp; | |
2020 | ||
2021 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
2022 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
2023 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
2024 | ||
2025 | /* capability flags */ | |
2026 | tmp = cpu_to_le16(cap); | |
2027 | memcpy(pos, &tmp, sizeof(u16)); | |
2028 | pos += sizeof(u16); | |
2029 | ||
2030 | /* AMPDU parameters */ | |
ef96a842 BG |
2031 | *pos++ = ht_cap->ampdu_factor | |
2032 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
2033 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
2034 | ||
2035 | /* MCS set */ | |
ef96a842 BG |
2036 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
2037 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
2038 | |
2039 | /* extended capabilities */ | |
2040 | pos += sizeof(__le16); | |
2041 | ||
2042 | /* BF capabilities */ | |
2043 | pos += sizeof(__le32); | |
2044 | ||
2045 | /* antenna selection */ | |
2046 | pos += sizeof(u8); | |
2047 | ||
2048 | return pos; | |
2049 | } | |
2050 | ||
ba0afa2f | 2051 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 2052 | u32 cap) |
ba0afa2f MP |
2053 | { |
2054 | __le32 tmp; | |
2055 | ||
2056 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
2057 | *pos++ = sizeof(struct ieee80211_vht_cap); |
2058 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
2059 | |
2060 | /* capability flags */ | |
2061 | tmp = cpu_to_le32(cap); | |
2062 | memcpy(pos, &tmp, sizeof(u32)); | |
2063 | pos += sizeof(u32); | |
2064 | ||
2065 | /* VHT MCS set */ | |
2066 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
2067 | pos += sizeof(vht_cap->vht_mcs); | |
2068 | ||
2069 | return pos; | |
2070 | } | |
2071 | ||
074d46d1 | 2072 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 2073 | const struct cfg80211_chan_def *chandef, |
431e3154 | 2074 | u16 prot_mode) |
42e7aa77 | 2075 | { |
074d46d1 | 2076 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 2077 | /* Build HT Information */ |
074d46d1 JB |
2078 | *pos++ = WLAN_EID_HT_OPERATION; |
2079 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
2080 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
2081 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
2082 | chandef->chan->center_freq); | |
2083 | switch (chandef->width) { | |
2084 | case NL80211_CHAN_WIDTH_160: | |
2085 | case NL80211_CHAN_WIDTH_80P80: | |
2086 | case NL80211_CHAN_WIDTH_80: | |
2087 | case NL80211_CHAN_WIDTH_40: | |
2088 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
2089 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2090 | else | |
2091 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 2092 | break; |
42e7aa77 | 2093 | default: |
074d46d1 | 2094 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
2095 | break; |
2096 | } | |
aee286c2 | 2097 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
2098 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
2099 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 2100 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 2101 | |
431e3154 | 2102 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 2103 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
2104 | |
2105 | /* It seems that Basic MCS set and Supported MCS set | |
2106 | are identical for the first 10 bytes */ | |
074d46d1 JB |
2107 | memset(&ht_oper->basic_set, 0, 16); |
2108 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 2109 | |
074d46d1 | 2110 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
2111 | } |
2112 | ||
4bf88530 | 2113 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 2114 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 2115 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
2116 | { |
2117 | enum nl80211_channel_type channel_type; | |
2118 | ||
4bf88530 JB |
2119 | if (!ht_oper) { |
2120 | cfg80211_chandef_create(chandef, control_chan, | |
2121 | NL80211_CHAN_NO_HT); | |
2122 | return; | |
2123 | } | |
42e7aa77 | 2124 | |
074d46d1 | 2125 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2126 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2127 | channel_type = NL80211_CHAN_HT20; | |
2128 | break; | |
2129 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2130 | channel_type = NL80211_CHAN_HT40PLUS; | |
2131 | break; | |
2132 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2133 | channel_type = NL80211_CHAN_HT40MINUS; | |
2134 | break; | |
2135 | default: | |
2136 | channel_type = NL80211_CHAN_NO_HT; | |
2137 | } | |
2138 | ||
4bf88530 | 2139 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
2140 | } |
2141 | ||
2103dec1 SW |
2142 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2143 | const struct ieee80211_supported_band *sband, | |
2144 | const u8 *srates, int srates_len, u32 *rates) | |
2145 | { | |
2146 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2147 | int shift = ieee80211_chandef_get_shift(chandef); | |
2148 | struct ieee80211_rate *br; | |
2149 | int brate, rate, i, j, count = 0; | |
2150 | ||
2151 | *rates = 0; | |
2152 | ||
2153 | for (i = 0; i < srates_len; i++) { | |
2154 | rate = srates[i] & 0x7f; | |
2155 | ||
2156 | for (j = 0; j < sband->n_bitrates; j++) { | |
2157 | br = &sband->bitrates[j]; | |
2158 | if ((rate_flags & br->flags) != rate_flags) | |
2159 | continue; | |
2160 | ||
2161 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2162 | if (brate == rate) { | |
2163 | *rates |= BIT(j); | |
2164 | count++; | |
2165 | break; | |
2166 | } | |
2167 | } | |
2168 | } | |
2169 | return count; | |
2170 | } | |
2171 | ||
fc8a7321 | 2172 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2173 | struct sk_buff *skb, bool need_basic, |
2174 | enum ieee80211_band band) | |
768db343 | 2175 | { |
768db343 AN |
2176 | struct ieee80211_local *local = sdata->local; |
2177 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2178 | int rate, shift; |
768db343 | 2179 | u8 i, rates, *pos; |
fc8a7321 | 2180 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2181 | u32 rate_flags; |
768db343 | 2182 | |
2103dec1 SW |
2183 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2184 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2185 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2186 | rates = 0; |
2187 | for (i = 0; i < sband->n_bitrates; i++) { | |
2188 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2189 | continue; | |
2190 | rates++; | |
2191 | } | |
768db343 AN |
2192 | if (rates > 8) |
2193 | rates = 8; | |
2194 | ||
2195 | if (skb_tailroom(skb) < rates + 2) | |
2196 | return -ENOMEM; | |
2197 | ||
2198 | pos = skb_put(skb, rates + 2); | |
2199 | *pos++ = WLAN_EID_SUPP_RATES; | |
2200 | *pos++ = rates; | |
2201 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2202 | u8 basic = 0; |
2103dec1 SW |
2203 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2204 | continue; | |
2205 | ||
657c3e0c AN |
2206 | if (need_basic && basic_rates & BIT(i)) |
2207 | basic = 0x80; | |
768db343 | 2208 | rate = sband->bitrates[i].bitrate; |
2103dec1 SW |
2209 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2210 | 5 * (1 << shift)); | |
2211 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2212 | } |
2213 | ||
2214 | return 0; | |
2215 | } | |
2216 | ||
fc8a7321 | 2217 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2218 | struct sk_buff *skb, bool need_basic, |
2219 | enum ieee80211_band band) | |
768db343 | 2220 | { |
768db343 AN |
2221 | struct ieee80211_local *local = sdata->local; |
2222 | struct ieee80211_supported_band *sband; | |
cc63ec76 | 2223 | int rate, shift; |
768db343 | 2224 | u8 i, exrates, *pos; |
fc8a7321 | 2225 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2226 | u32 rate_flags; |
2227 | ||
2228 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2229 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2230 | |
6b77863b | 2231 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2232 | exrates = 0; |
2233 | for (i = 0; i < sband->n_bitrates; i++) { | |
2234 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2235 | continue; | |
2236 | exrates++; | |
2237 | } | |
2238 | ||
768db343 AN |
2239 | if (exrates > 8) |
2240 | exrates -= 8; | |
2241 | else | |
2242 | exrates = 0; | |
2243 | ||
2244 | if (skb_tailroom(skb) < exrates + 2) | |
2245 | return -ENOMEM; | |
2246 | ||
2247 | if (exrates) { | |
2248 | pos = skb_put(skb, exrates + 2); | |
2249 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2250 | *pos++ = exrates; | |
2251 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c | 2252 | u8 basic = 0; |
2103dec1 SW |
2253 | if ((rate_flags & sband->bitrates[i].flags) |
2254 | != rate_flags) | |
2255 | continue; | |
657c3e0c AN |
2256 | if (need_basic && basic_rates & BIT(i)) |
2257 | basic = 0x80; | |
2103dec1 SW |
2258 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2259 | 5 * (1 << shift)); | |
2260 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2261 | } |
2262 | } | |
2263 | return 0; | |
2264 | } | |
1dae27f8 WYG |
2265 | |
2266 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2267 | { | |
2268 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2269 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2270 | ||
be6bcabc WYG |
2271 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2272 | /* non-managed type inferfaces */ | |
2273 | return 0; | |
2274 | } | |
3a7bba64 | 2275 | return ifmgd->ave_beacon_signal / 16; |
1dae27f8 | 2276 | } |
0d8a0a17 | 2277 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2278 | |
2279 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2280 | { | |
2281 | if (!mcs) | |
2282 | return 1; | |
2283 | ||
2284 | /* TODO: consider rx_highest */ | |
2285 | ||
2286 | if (mcs->rx_mask[3]) | |
2287 | return 4; | |
2288 | if (mcs->rx_mask[2]) | |
2289 | return 3; | |
2290 | if (mcs->rx_mask[1]) | |
2291 | return 2; | |
2292 | return 1; | |
2293 | } | |
f4bda337 TP |
2294 | |
2295 | /** | |
2296 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2297 | * @local: mac80211 hw info struct | |
2298 | * @status: RX status | |
2299 | * @mpdu_len: total MPDU length (including FCS) | |
2300 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2301 | * | |
2302 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2303 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2304 | * the timestamp to TSF at beginning of MPDU reception. | |
2305 | */ | |
2306 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2307 | struct ieee80211_rx_status *status, | |
2308 | unsigned int mpdu_len, | |
2309 | unsigned int mpdu_offset) | |
2310 | { | |
2311 | u64 ts = status->mactime; | |
2312 | struct rate_info ri; | |
2313 | u16 rate; | |
2314 | ||
2315 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2316 | return 0; | |
2317 | ||
2318 | memset(&ri, 0, sizeof(ri)); | |
2319 | ||
2320 | /* Fill cfg80211 rate info */ | |
2321 | if (status->flag & RX_FLAG_HT) { | |
2322 | ri.mcs = status->rate_idx; | |
2323 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2324 | if (status->flag & RX_FLAG_40MHZ) | |
2325 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2326 | if (status->flag & RX_FLAG_SHORT_GI) | |
2327 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2328 | } else if (status->flag & RX_FLAG_VHT) { |
2329 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2330 | ri.mcs = status->rate_idx; | |
2331 | ri.nss = status->vht_nss; | |
2332 | if (status->flag & RX_FLAG_40MHZ) | |
2333 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
1b8d242a | 2334 | if (status->vht_flag & RX_VHT_FLAG_80MHZ) |
5614618e | 2335 | ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; |
1b8d242a | 2336 | if (status->vht_flag & RX_VHT_FLAG_80P80MHZ) |
5614618e | 2337 | ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; |
1b8d242a | 2338 | if (status->vht_flag & RX_VHT_FLAG_160MHZ) |
5614618e JB |
2339 | ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; |
2340 | if (status->flag & RX_FLAG_SHORT_GI) | |
2341 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2342 | } else { |
2343 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2344 | int shift = 0; |
2345 | int bitrate; | |
2346 | ||
2347 | if (status->flag & RX_FLAG_10MHZ) | |
2348 | shift = 1; | |
2349 | if (status->flag & RX_FLAG_5MHZ) | |
2350 | shift = 2; | |
f4bda337 TP |
2351 | |
2352 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2353 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2354 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4bda337 TP |
2355 | } |
2356 | ||
2357 | rate = cfg80211_calculate_bitrate(&ri); | |
d86aa4f8 JB |
2358 | if (WARN_ONCE(!rate, |
2359 | "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n", | |
2360 | status->flag, status->rate_idx, status->vht_nss)) | |
2361 | return 0; | |
f4bda337 TP |
2362 | |
2363 | /* rewind from end of MPDU */ | |
2364 | if (status->flag & RX_FLAG_MACTIME_END) | |
2365 | ts -= mpdu_len * 8 * 10 / rate; | |
2366 | ||
2367 | ts += mpdu_offset * 8 * 10 / rate; | |
2368 | ||
2369 | return ts; | |
2370 | } | |
164eb02d SW |
2371 | |
2372 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2373 | { | |
2374 | struct ieee80211_sub_if_data *sdata; | |
d2859df5 | 2375 | struct cfg80211_chan_def chandef; |
164eb02d | 2376 | |
34a3740d | 2377 | mutex_lock(&local->mtx); |
164eb02d SW |
2378 | mutex_lock(&local->iflist_mtx); |
2379 | list_for_each_entry(sdata, &local->interfaces, list) { | |
34a3740d JB |
2380 | /* it might be waiting for the local->mtx, but then |
2381 | * by the time it gets it, sdata->wdev.cac_started | |
2382 | * will no longer be true | |
2383 | */ | |
2384 | cancel_delayed_work(&sdata->dfs_cac_timer_work); | |
164eb02d SW |
2385 | |
2386 | if (sdata->wdev.cac_started) { | |
d2859df5 | 2387 | chandef = sdata->vif.bss_conf.chandef; |
164eb02d SW |
2388 | ieee80211_vif_release_channel(sdata); |
2389 | cfg80211_cac_event(sdata->dev, | |
d2859df5 | 2390 | &chandef, |
164eb02d SW |
2391 | NL80211_RADAR_CAC_ABORTED, |
2392 | GFP_KERNEL); | |
2393 | } | |
2394 | } | |
2395 | mutex_unlock(&local->iflist_mtx); | |
34a3740d | 2396 | mutex_unlock(&local->mtx); |
164eb02d SW |
2397 | } |
2398 | ||
2399 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2400 | { | |
2401 | struct ieee80211_local *local = | |
2402 | container_of(work, struct ieee80211_local, radar_detected_work); | |
84a3d1c9 | 2403 | struct cfg80211_chan_def chandef = local->hw.conf.chandef; |
164eb02d SW |
2404 | |
2405 | ieee80211_dfs_cac_cancel(local); | |
2406 | ||
2407 | if (local->use_chanctx) | |
2408 | /* currently not handled */ | |
2409 | WARN_ON(1); | |
84a3d1c9 | 2410 | else |
164eb02d | 2411 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
164eb02d SW |
2412 | } |
2413 | ||
2414 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2415 | { | |
2416 | struct ieee80211_local *local = hw_to_local(hw); | |
2417 | ||
2418 | trace_api_radar_detected(local); | |
2419 | ||
2420 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2421 | } | |
2422 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2423 | |
2424 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2425 | { | |
2426 | u32 ret; | |
2427 | int tmp; | |
2428 | ||
2429 | switch (c->width) { | |
2430 | case NL80211_CHAN_WIDTH_20: | |
2431 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2432 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2433 | break; | |
2434 | case NL80211_CHAN_WIDTH_40: | |
2435 | c->width = NL80211_CHAN_WIDTH_20; | |
2436 | c->center_freq1 = c->chan->center_freq; | |
2437 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2438 | IEEE80211_STA_DISABLE_VHT; | |
2439 | break; | |
2440 | case NL80211_CHAN_WIDTH_80: | |
2441 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2442 | /* n_P40 */ | |
2443 | tmp /= 2; | |
2444 | /* freq_P40 */ | |
2445 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2446 | c->width = NL80211_CHAN_WIDTH_40; | |
2447 | ret = IEEE80211_STA_DISABLE_VHT; | |
2448 | break; | |
2449 | case NL80211_CHAN_WIDTH_80P80: | |
2450 | c->center_freq2 = 0; | |
2451 | c->width = NL80211_CHAN_WIDTH_80; | |
2452 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2453 | IEEE80211_STA_DISABLE_160MHZ; | |
2454 | break; | |
2455 | case NL80211_CHAN_WIDTH_160: | |
2456 | /* n_P20 */ | |
2457 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2458 | /* n_P80 */ | |
2459 | tmp /= 4; | |
2460 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2461 | c->width = NL80211_CHAN_WIDTH_80; | |
2462 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2463 | IEEE80211_STA_DISABLE_160MHZ; | |
2464 | break; | |
2465 | default: | |
2466 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2467 | WARN_ON_ONCE(1); | |
2468 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2469 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2470 | break; | |
2471 | case NL80211_CHAN_WIDTH_5: | |
2472 | case NL80211_CHAN_WIDTH_10: | |
2473 | WARN_ON_ONCE(1); | |
2474 | /* keep c->width */ | |
2475 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2476 | break; | |
2477 | } | |
2478 | ||
2479 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2480 | ||
2481 | return ret; | |
2482 | } | |
687da132 EG |
2483 | |
2484 | /* | |
2485 | * Returns true if smps_mode_new is strictly more restrictive than | |
2486 | * smps_mode_old. | |
2487 | */ | |
2488 | bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, | |
2489 | enum ieee80211_smps_mode smps_mode_new) | |
2490 | { | |
2491 | if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || | |
2492 | smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) | |
2493 | return false; | |
2494 | ||
2495 | switch (smps_mode_old) { | |
2496 | case IEEE80211_SMPS_STATIC: | |
2497 | return false; | |
2498 | case IEEE80211_SMPS_DYNAMIC: | |
2499 | return smps_mode_new == IEEE80211_SMPS_STATIC; | |
2500 | case IEEE80211_SMPS_OFF: | |
2501 | return smps_mode_new != IEEE80211_SMPS_OFF; | |
2502 | default: | |
2503 | WARN_ON(1); | |
2504 | } | |
2505 | ||
2506 | return false; | |
2507 | } | |
c6da674a CYY |
2508 | |
2509 | int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, | |
2510 | struct cfg80211_csa_settings *csa_settings) | |
2511 | { | |
2512 | struct sk_buff *skb; | |
2513 | struct ieee80211_mgmt *mgmt; | |
2514 | struct ieee80211_local *local = sdata->local; | |
2515 | int freq; | |
2516 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + | |
2517 | sizeof(mgmt->u.action.u.chan_switch); | |
2518 | u8 *pos; | |
2519 | ||
2520 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
2521 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) | |
2522 | return -EOPNOTSUPP; | |
2523 | ||
2524 | skb = dev_alloc_skb(local->tx_headroom + hdr_len + | |
2525 | 5 + /* channel switch announcement element */ | |
2526 | 3 + /* secondary channel offset element */ | |
2527 | 8); /* mesh channel switch parameters element */ | |
2528 | if (!skb) | |
2529 | return -ENOMEM; | |
2530 | ||
2531 | skb_reserve(skb, local->tx_headroom); | |
2532 | mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); | |
2533 | memset(mgmt, 0, hdr_len); | |
2534 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2535 | IEEE80211_STYPE_ACTION); | |
2536 | ||
2537 | eth_broadcast_addr(mgmt->da); | |
2538 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
2539 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2540 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); | |
2541 | } else { | |
2542 | struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; | |
2543 | memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); | |
2544 | } | |
2545 | mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
2546 | mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; | |
2547 | pos = skb_put(skb, 5); | |
2548 | *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ | |
2549 | *pos++ = 3; /* IE length */ | |
2550 | *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ | |
2551 | freq = csa_settings->chandef.chan->center_freq; | |
2552 | *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ | |
2553 | *pos++ = csa_settings->count; /* count */ | |
2554 | ||
2555 | if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { | |
2556 | enum nl80211_channel_type ch_type; | |
2557 | ||
2558 | skb_put(skb, 3); | |
2559 | *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ | |
2560 | *pos++ = 1; /* IE length */ | |
2561 | ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); | |
2562 | if (ch_type == NL80211_CHAN_HT40PLUS) | |
2563 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2564 | else | |
2565 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2566 | } | |
2567 | ||
2568 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2569 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
c6da674a CYY |
2570 | |
2571 | skb_put(skb, 8); | |
2572 | *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ | |
2573 | *pos++ = 6; /* IE length */ | |
2574 | *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ | |
2575 | *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ | |
2576 | *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; | |
2577 | *pos++ |= csa_settings->block_tx ? | |
2578 | WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; | |
2579 | put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ | |
2580 | pos += 2; | |
ca91dc97 | 2581 | put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
c6da674a | 2582 | pos += 2; |
c6da674a CYY |
2583 | } |
2584 | ||
2585 | ieee80211_tx_skb(sdata, skb); | |
2586 | return 0; | |
2587 | } | |
2475b1cc MS |
2588 | |
2589 | bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) | |
2590 | { | |
2591 | return !(cs == NULL || cs->cipher == 0 || | |
2592 | cs->hdr_len < cs->pn_len + cs->pn_off || | |
2593 | cs->hdr_len <= cs->key_idx_off || | |
2594 | cs->key_idx_shift > 7 || | |
2595 | cs->key_idx_mask == 0); | |
2596 | } | |
2597 | ||
2598 | bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) | |
2599 | { | |
2600 | int i; | |
2601 | ||
2602 | /* Ensure we have enough iftype bitmap space for all iftype values */ | |
2603 | WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); | |
2604 | ||
2605 | for (i = 0; i < n; i++) | |
2606 | if (!ieee80211_cs_valid(&cs[i])) | |
2607 | return false; | |
2608 | ||
2609 | return true; | |
2610 | } | |
2611 | ||
2612 | const struct ieee80211_cipher_scheme * | |
2613 | ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, | |
2614 | enum nl80211_iftype iftype) | |
2615 | { | |
2616 | const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; | |
2617 | int n = local->hw.n_cipher_schemes; | |
2618 | int i; | |
2619 | const struct ieee80211_cipher_scheme *cs = NULL; | |
2620 | ||
2621 | for (i = 0; i < n; i++) { | |
2622 | if (l[i].cipher == cipher) { | |
2623 | cs = &l[i]; | |
2624 | break; | |
2625 | } | |
2626 | } | |
2627 | ||
2628 | if (!cs || !(cs->iftype & BIT(iftype))) | |
2629 | return NULL; | |
2630 | ||
2631 | return cs; | |
2632 | } | |
2633 | ||
2634 | int ieee80211_cs_headroom(struct ieee80211_local *local, | |
2635 | struct cfg80211_crypto_settings *crypto, | |
2636 | enum nl80211_iftype iftype) | |
2637 | { | |
2638 | const struct ieee80211_cipher_scheme *cs; | |
2639 | int headroom = IEEE80211_ENCRYPT_HEADROOM; | |
2640 | int i; | |
2641 | ||
2642 | for (i = 0; i < crypto->n_ciphers_pairwise; i++) { | |
2643 | cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], | |
2644 | iftype); | |
2645 | ||
2646 | if (cs && headroom < cs->hdr_len) | |
2647 | headroom = cs->hdr_len; | |
2648 | } | |
2649 | ||
2650 | cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); | |
2651 | if (cs && headroom < cs->hdr_len) | |
2652 | headroom = cs->hdr_len; | |
2653 | ||
2654 | return headroom; | |
2655 | } | |
a7022e65 FF |
2656 | |
2657 | static bool | |
2658 | ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) | |
2659 | { | |
2660 | s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); | |
2661 | int skip; | |
2662 | ||
2663 | if (end > 0) | |
2664 | return false; | |
2665 | ||
2666 | /* End time is in the past, check for repetitions */ | |
2667 | skip = DIV_ROUND_UP(-end, data->desc[i].interval); | |
2668 | if (data->count[i] < 255) { | |
2669 | if (data->count[i] <= skip) { | |
2670 | data->count[i] = 0; | |
2671 | return false; | |
2672 | } | |
2673 | ||
2674 | data->count[i] -= skip; | |
2675 | } | |
2676 | ||
2677 | data->desc[i].start += skip * data->desc[i].interval; | |
2678 | ||
2679 | return true; | |
2680 | } | |
2681 | ||
2682 | static bool | |
2683 | ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, | |
2684 | s32 *offset) | |
2685 | { | |
2686 | bool ret = false; | |
2687 | int i; | |
2688 | ||
2689 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2690 | s32 cur; | |
2691 | ||
2692 | if (!data->count[i]) | |
2693 | continue; | |
2694 | ||
2695 | if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) | |
2696 | ret = true; | |
2697 | ||
2698 | cur = data->desc[i].start - tsf; | |
2699 | if (cur > *offset) | |
2700 | continue; | |
2701 | ||
2702 | cur = data->desc[i].start + data->desc[i].duration - tsf; | |
2703 | if (cur > *offset) | |
2704 | *offset = cur; | |
2705 | } | |
2706 | ||
2707 | return ret; | |
2708 | } | |
2709 | ||
2710 | static u32 | |
2711 | ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) | |
2712 | { | |
2713 | s32 offset = 0; | |
2714 | int tries = 0; | |
2715 | /* | |
2716 | * arbitrary limit, used to avoid infinite loops when combined NoA | |
2717 | * descriptors cover the full time period. | |
2718 | */ | |
2719 | int max_tries = 5; | |
2720 | ||
2721 | ieee80211_extend_absent_time(data, tsf, &offset); | |
2722 | do { | |
2723 | if (!ieee80211_extend_absent_time(data, tsf, &offset)) | |
2724 | break; | |
2725 | ||
2726 | tries++; | |
2727 | } while (tries < max_tries); | |
2728 | ||
2729 | return offset; | |
2730 | } | |
2731 | ||
2732 | void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) | |
2733 | { | |
2734 | u32 next_offset = BIT(31) - 1; | |
2735 | int i; | |
2736 | ||
2737 | data->absent = 0; | |
2738 | data->has_next_tsf = false; | |
2739 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2740 | s32 start; | |
2741 | ||
2742 | if (!data->count[i]) | |
2743 | continue; | |
2744 | ||
2745 | ieee80211_extend_noa_desc(data, tsf, i); | |
2746 | start = data->desc[i].start - tsf; | |
2747 | if (start <= 0) | |
2748 | data->absent |= BIT(i); | |
2749 | ||
2750 | if (next_offset > start) | |
2751 | next_offset = start; | |
2752 | ||
2753 | data->has_next_tsf = true; | |
2754 | } | |
2755 | ||
2756 | if (data->absent) | |
2757 | next_offset = ieee80211_get_noa_absent_time(data, tsf); | |
2758 | ||
2759 | data->next_tsf = tsf + next_offset; | |
2760 | } | |
2761 | EXPORT_SYMBOL(ieee80211_update_p2p_noa); | |
2762 | ||
2763 | int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, | |
2764 | struct ieee80211_noa_data *data, u32 tsf) | |
2765 | { | |
2766 | int ret = 0; | |
2767 | int i; | |
2768 | ||
2769 | memset(data, 0, sizeof(*data)); | |
2770 | ||
2771 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2772 | const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; | |
2773 | ||
2774 | if (!desc->count || !desc->duration) | |
2775 | continue; | |
2776 | ||
2777 | data->count[i] = desc->count; | |
2778 | data->desc[i].start = le32_to_cpu(desc->start_time); | |
2779 | data->desc[i].duration = le32_to_cpu(desc->duration); | |
2780 | data->desc[i].interval = le32_to_cpu(desc->interval); | |
2781 | ||
2782 | if (data->count[i] > 1 && | |
2783 | data->desc[i].interval < data->desc[i].duration) | |
2784 | continue; | |
2785 | ||
2786 | ieee80211_extend_noa_desc(data, tsf, i); | |
2787 | ret++; | |
2788 | } | |
2789 | ||
2790 | if (ret) | |
2791 | ieee80211_update_p2p_noa(data, tsf); | |
2792 | ||
2793 | return ret; | |
2794 | } | |
2795 | EXPORT_SYMBOL(ieee80211_parse_p2p_noa); | |
057d5f4b TP |
2796 | |
2797 | void ieee80211_recalc_dtim(struct ieee80211_local *local, | |
2798 | struct ieee80211_sub_if_data *sdata) | |
2799 | { | |
2800 | u64 tsf = drv_get_tsf(local, sdata); | |
2801 | u64 dtim_count = 0; | |
2802 | u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; | |
2803 | u8 dtim_period = sdata->vif.bss_conf.dtim_period; | |
2804 | struct ps_data *ps; | |
2805 | u8 bcns_from_dtim; | |
2806 | ||
2807 | if (tsf == -1ULL || !beacon_int || !dtim_period) | |
2808 | return; | |
2809 | ||
2810 | if (sdata->vif.type == NL80211_IFTYPE_AP || | |
2811 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
2812 | if (!sdata->bss) | |
2813 | return; | |
2814 | ||
2815 | ps = &sdata->bss->ps; | |
2816 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2817 | ps = &sdata->u.mesh.ps; | |
2818 | } else { | |
2819 | return; | |
2820 | } | |
2821 | ||
2822 | /* | |
2823 | * actually finds last dtim_count, mac80211 will update in | |
2824 | * __beacon_add_tim(). | |
2825 | * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period | |
2826 | */ | |
2827 | do_div(tsf, beacon_int); | |
2828 | bcns_from_dtim = do_div(tsf, dtim_period); | |
2829 | /* just had a DTIM */ | |
2830 | if (!bcns_from_dtim) | |
2831 | dtim_count = 0; | |
2832 | else | |
2833 | dtim_count = dtim_period - bcns_from_dtim; | |
2834 | ||
2835 | ps->dtim_count = dtim_count; | |
2836 | } | |
73de86a3 LC |
2837 | |
2838 | int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, | |
2839 | const struct cfg80211_chan_def *chandef, | |
2840 | enum ieee80211_chanctx_mode chanmode, | |
2841 | u8 radar_detect) | |
2842 | { | |
2843 | struct ieee80211_local *local = sdata->local; | |
2844 | struct ieee80211_sub_if_data *sdata_iter; | |
2845 | enum nl80211_iftype iftype = sdata->wdev.iftype; | |
2846 | int num[NUM_NL80211_IFTYPES]; | |
2847 | struct ieee80211_chanctx *ctx; | |
b6a55015 | 2848 | int num_different_channels = 0; |
73de86a3 LC |
2849 | int total = 1; |
2850 | ||
2851 | lockdep_assert_held(&local->chanctx_mtx); | |
2852 | ||
2853 | if (WARN_ON(hweight32(radar_detect) > 1)) | |
2854 | return -EINVAL; | |
2855 | ||
b6a55015 LC |
2856 | if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
2857 | !chandef->chan)) | |
73de86a3 LC |
2858 | return -EINVAL; |
2859 | ||
b6a55015 LC |
2860 | if (chandef) |
2861 | num_different_channels = 1; | |
2862 | ||
73de86a3 LC |
2863 | if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) |
2864 | return -EINVAL; | |
2865 | ||
2866 | /* Always allow software iftypes */ | |
2867 | if (local->hw.wiphy->software_iftypes & BIT(iftype)) { | |
2868 | if (radar_detect) | |
2869 | return -EINVAL; | |
2870 | return 0; | |
2871 | } | |
2872 | ||
2873 | memset(num, 0, sizeof(num)); | |
2874 | ||
2875 | if (iftype != NL80211_IFTYPE_UNSPECIFIED) | |
2876 | num[iftype] = 1; | |
2877 | ||
2878 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
2879 | if (ctx->conf.radar_enabled) | |
2880 | radar_detect |= BIT(ctx->conf.def.width); | |
2881 | if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { | |
2882 | num_different_channels++; | |
2883 | continue; | |
2884 | } | |
b6a55015 | 2885 | if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
73de86a3 LC |
2886 | cfg80211_chandef_compatible(chandef, |
2887 | &ctx->conf.def)) | |
2888 | continue; | |
2889 | num_different_channels++; | |
2890 | } | |
2891 | ||
2892 | list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { | |
2893 | struct wireless_dev *wdev_iter; | |
2894 | ||
2895 | wdev_iter = &sdata_iter->wdev; | |
2896 | ||
2897 | if (sdata_iter == sdata || | |
2898 | rcu_access_pointer(sdata_iter->vif.chanctx_conf) == NULL || | |
2899 | local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) | |
2900 | continue; | |
2901 | ||
2902 | num[wdev_iter->iftype]++; | |
2903 | total++; | |
2904 | } | |
2905 | ||
2906 | if (total == 1 && !radar_detect) | |
2907 | return 0; | |
2908 | ||
2909 | return cfg80211_check_combinations(local->hw.wiphy, | |
2910 | num_different_channels, | |
2911 | radar_detect, num); | |
2912 | } | |
6fa001bc MK |
2913 | |
2914 | static void | |
2915 | ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, | |
2916 | void *data) | |
2917 | { | |
2918 | u32 *max_num_different_channels = data; | |
2919 | ||
2920 | *max_num_different_channels = max(*max_num_different_channels, | |
2921 | c->num_different_channels); | |
2922 | } | |
2923 | ||
2924 | int ieee80211_max_num_channels(struct ieee80211_local *local) | |
2925 | { | |
2926 | struct ieee80211_sub_if_data *sdata; | |
2927 | int num[NUM_NL80211_IFTYPES] = {}; | |
2928 | struct ieee80211_chanctx *ctx; | |
2929 | int num_different_channels = 0; | |
2930 | u8 radar_detect = 0; | |
2931 | u32 max_num_different_channels = 1; | |
2932 | int err; | |
2933 | ||
2934 | lockdep_assert_held(&local->chanctx_mtx); | |
2935 | ||
2936 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
2937 | num_different_channels++; | |
2938 | ||
2939 | if (ctx->conf.radar_enabled) | |
2940 | radar_detect |= BIT(ctx->conf.def.width); | |
2941 | } | |
2942 | ||
2943 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
2944 | num[sdata->wdev.iftype]++; | |
2945 | ||
2946 | err = cfg80211_iter_combinations(local->hw.wiphy, | |
2947 | num_different_channels, radar_detect, | |
2948 | num, ieee80211_iter_max_chans, | |
2949 | &max_num_different_channels); | |
2950 | if (err < 0) | |
2951 | return err; | |
2952 | ||
2953 | return max_num_different_channels; | |
2954 | } |