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Commit | Line | Data |
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c2d1560a JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * utilities for mac80211 | |
12 | */ | |
13 | ||
14 | #include <net/mac80211.h> | |
15 | #include <linux/netdevice.h> | |
bc3b2d7f | 16 | #include <linux/export.h> |
c2d1560a JB |
17 | #include <linux/types.h> |
18 | #include <linux/slab.h> | |
19 | #include <linux/skbuff.h> | |
20 | #include <linux/etherdevice.h> | |
21 | #include <linux/if_arp.h> | |
c2d1560a | 22 | #include <linux/bitmap.h> |
dd76986b | 23 | #include <linux/crc32.h> |
881d966b | 24 | #include <net/net_namespace.h> |
c2d1560a | 25 | #include <net/cfg80211.h> |
dabeb344 | 26 | #include <net/rtnetlink.h> |
c2d1560a JB |
27 | |
28 | #include "ieee80211_i.h" | |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 | 30 | #include "rate.h" |
ee385855 | 31 | #include "mesh.h" |
c2d1560a | 32 | #include "wme.h" |
f2753ddb | 33 | #include "led.h" |
fffd0934 | 34 | #include "wep.h" |
c2d1560a JB |
35 | |
36 | /* privid for wiphys to determine whether they belong to us or not */ | |
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 | 319 | static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
320 | enum queue_stop_reason reason, |
321 | bool refcounted) | |
c2d1560a JB |
322 | { |
323 | struct ieee80211_local *local = hw_to_local(hw); | |
324 | ||
b5878a2d JB |
325 | trace_wake_queue(local, queue, reason); |
326 | ||
e4e72fb4 JB |
327 | if (WARN_ON(queue >= hw->queues)) |
328 | return; | |
ce7c9111 | 329 | |
ada15125 JB |
330 | if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
331 | return; | |
332 | ||
cca07b00 LC |
333 | if (!refcounted) |
334 | local->q_stop_reasons[queue][reason] = 0; | |
335 | else | |
336 | local->q_stop_reasons[queue][reason]--; | |
337 | ||
338 | if (local->q_stop_reasons[queue][reason] == 0) | |
339 | __clear_bit(reason, &local->queue_stop_reasons[queue]); | |
96f5e66e JB |
340 | |
341 | if (local->queue_stop_reasons[queue] != 0) | |
342 | /* someone still has this queue stopped */ | |
343 | return; | |
344 | ||
7236fe29 JB |
345 | if (skb_queue_empty(&local->pending[queue])) { |
346 | rcu_read_lock(); | |
3a25a8c8 | 347 | ieee80211_propagate_queue_wake(local, queue); |
7236fe29 JB |
348 | rcu_read_unlock(); |
349 | } else | |
3b8d81e0 | 350 | tasklet_schedule(&local->tx_pending_tasklet); |
c2d1560a | 351 | } |
ce7c9111 | 352 | |
96f5e66e | 353 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
354 | enum queue_stop_reason reason, |
355 | bool refcounted) | |
ce7c9111 KV |
356 | { |
357 | struct ieee80211_local *local = hw_to_local(hw); | |
358 | unsigned long flags; | |
359 | ||
360 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 361 | __ieee80211_wake_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
362 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
363 | } | |
364 | ||
365 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) | |
366 | { | |
367 | ieee80211_wake_queue_by_reason(hw, queue, | |
cca07b00 LC |
368 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
369 | false); | |
ce7c9111 | 370 | } |
c2d1560a JB |
371 | EXPORT_SYMBOL(ieee80211_wake_queue); |
372 | ||
ce7c9111 | 373 | static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
374 | enum queue_stop_reason reason, |
375 | bool refcounted) | |
c2d1560a JB |
376 | { |
377 | struct ieee80211_local *local = hw_to_local(hw); | |
cf0277e7 | 378 | struct ieee80211_sub_if_data *sdata; |
a6f38ac3 | 379 | int n_acs = IEEE80211_NUM_ACS; |
c2d1560a | 380 | |
b5878a2d JB |
381 | trace_stop_queue(local, queue, reason); |
382 | ||
e4e72fb4 JB |
383 | if (WARN_ON(queue >= hw->queues)) |
384 | return; | |
96f5e66e | 385 | |
cca07b00 LC |
386 | if (!refcounted) |
387 | local->q_stop_reasons[queue][reason] = 1; | |
388 | else | |
389 | local->q_stop_reasons[queue][reason]++; | |
ada15125 | 390 | |
cca07b00 LC |
391 | if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) |
392 | return; | |
cf0277e7 | 393 | |
a6f38ac3 JB |
394 | if (local->hw.queues < IEEE80211_NUM_ACS) |
395 | n_acs = 1; | |
396 | ||
cf0277e7 | 397 | rcu_read_lock(); |
3a25a8c8 JB |
398 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
399 | int ac; | |
400 | ||
f142c6b9 JB |
401 | if (!sdata->dev) |
402 | continue; | |
403 | ||
a6f38ac3 | 404 | for (ac = 0; ac < n_acs; ac++) { |
3a25a8c8 JB |
405 | if (sdata->vif.hw_queue[ac] == queue || |
406 | sdata->vif.cab_queue == queue) | |
407 | netif_stop_subqueue(sdata->dev, ac); | |
408 | } | |
409 | } | |
cf0277e7 | 410 | rcu_read_unlock(); |
c2d1560a | 411 | } |
ce7c9111 | 412 | |
96f5e66e | 413 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
cca07b00 LC |
414 | enum queue_stop_reason reason, |
415 | bool refcounted) | |
ce7c9111 KV |
416 | { |
417 | struct ieee80211_local *local = hw_to_local(hw); | |
418 | unsigned long flags; | |
419 | ||
420 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 | 421 | __ieee80211_stop_queue(hw, queue, reason, refcounted); |
ce7c9111 KV |
422 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
423 | } | |
424 | ||
425 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) | |
426 | { | |
427 | ieee80211_stop_queue_by_reason(hw, queue, | |
cca07b00 LC |
428 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
429 | false); | |
ce7c9111 | 430 | } |
c2d1560a JB |
431 | EXPORT_SYMBOL(ieee80211_stop_queue); |
432 | ||
8f77f384 JB |
433 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
434 | struct sk_buff *skb) | |
435 | { | |
436 | struct ieee80211_hw *hw = &local->hw; | |
437 | unsigned long flags; | |
a7bc376c | 438 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3a25a8c8 | 439 | int queue = info->hw_queue; |
a7bc376c JB |
440 | |
441 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 442 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
443 | return; |
444 | } | |
8f77f384 JB |
445 | |
446 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
cca07b00 LC |
447 | __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
448 | false); | |
3b8d81e0 | 449 | __skb_queue_tail(&local->pending[queue], skb); |
cca07b00 LC |
450 | __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
451 | false); | |
8f77f384 JB |
452 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
453 | } | |
454 | ||
e3685e03 JB |
455 | void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
456 | struct sk_buff_head *skbs) | |
8f77f384 JB |
457 | { |
458 | struct ieee80211_hw *hw = &local->hw; | |
459 | struct sk_buff *skb; | |
460 | unsigned long flags; | |
b0b97a8a | 461 | int queue, i; |
8f77f384 JB |
462 | |
463 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
8f77f384 | 464 | while ((skb = skb_dequeue(skbs))) { |
a7bc376c JB |
465 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
466 | ||
467 | if (WARN_ON(!info->control.vif)) { | |
d4fa14cd | 468 | ieee80211_free_txskb(&local->hw, skb); |
a7bc376c JB |
469 | continue; |
470 | } | |
471 | ||
3a25a8c8 | 472 | queue = info->hw_queue; |
4644ae89 JB |
473 | |
474 | __ieee80211_stop_queue(hw, queue, | |
cca07b00 LC |
475 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
476 | false); | |
4644ae89 | 477 | |
3b8d81e0 | 478 | __skb_queue_tail(&local->pending[queue], skb); |
8f77f384 JB |
479 | } |
480 | ||
3b8d81e0 | 481 | for (i = 0; i < hw->queues; i++) |
8f77f384 | 482 | __ieee80211_wake_queue(hw, i, |
cca07b00 LC |
483 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
484 | false); | |
8f77f384 | 485 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
8f77f384 JB |
486 | } |
487 | ||
ce7c9111 | 488 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 489 | unsigned long queues, |
cca07b00 LC |
490 | enum queue_stop_reason reason, |
491 | bool refcounted) | |
c2d1560a | 492 | { |
ce7c9111 KV |
493 | struct ieee80211_local *local = hw_to_local(hw); |
494 | unsigned long flags; | |
c2d1560a JB |
495 | int i; |
496 | ||
ce7c9111 KV |
497 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
498 | ||
445ea4e8 | 499 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 500 | __ieee80211_stop_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
501 | |
502 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
503 | } | |
504 | ||
505 | void ieee80211_stop_queues(struct ieee80211_hw *hw) | |
506 | { | |
445ea4e8 | 507 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
508 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
509 | false); | |
c2d1560a JB |
510 | } |
511 | EXPORT_SYMBOL(ieee80211_stop_queues); | |
512 | ||
92ab8535 TW |
513 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
514 | { | |
515 | struct ieee80211_local *local = hw_to_local(hw); | |
3b8d81e0 JB |
516 | unsigned long flags; |
517 | int ret; | |
96f5e66e | 518 | |
e4e72fb4 JB |
519 | if (WARN_ON(queue >= hw->queues)) |
520 | return true; | |
96f5e66e | 521 | |
3b8d81e0 | 522 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
2419ea14 TP |
523 | ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
524 | &local->queue_stop_reasons[queue]); | |
3b8d81e0 JB |
525 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
526 | return ret; | |
92ab8535 TW |
527 | } |
528 | EXPORT_SYMBOL(ieee80211_queue_stopped); | |
529 | ||
ce7c9111 | 530 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
445ea4e8 | 531 | unsigned long queues, |
cca07b00 LC |
532 | enum queue_stop_reason reason, |
533 | bool refcounted) | |
c2d1560a | 534 | { |
ce7c9111 KV |
535 | struct ieee80211_local *local = hw_to_local(hw); |
536 | unsigned long flags; | |
c2d1560a JB |
537 | int i; |
538 | ||
ce7c9111 KV |
539 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
540 | ||
445ea4e8 | 541 | for_each_set_bit(i, &queues, hw->queues) |
cca07b00 | 542 | __ieee80211_wake_queue(hw, i, reason, refcounted); |
ce7c9111 KV |
543 | |
544 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
545 | } | |
546 | ||
547 | void ieee80211_wake_queues(struct ieee80211_hw *hw) | |
548 | { | |
445ea4e8 | 549 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
550 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
551 | false); | |
c2d1560a JB |
552 | } |
553 | EXPORT_SYMBOL(ieee80211_wake_queues); | |
dabeb344 | 554 | |
26da23b6 LC |
555 | static unsigned int |
556 | ieee80211_get_vif_queues(struct ieee80211_local *local, | |
557 | struct ieee80211_sub_if_data *sdata) | |
39ecc01d | 558 | { |
26da23b6 | 559 | unsigned int queues; |
39ecc01d JB |
560 | |
561 | if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) { | |
562 | int ac; | |
563 | ||
564 | queues = 0; | |
565 | ||
566 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
567 | queues |= BIT(sdata->vif.hw_queue[ac]); | |
568 | if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
569 | queues |= BIT(sdata->vif.cab_queue); | |
570 | } else { | |
571 | /* all queues */ | |
572 | queues = BIT(local->hw.queues) - 1; | |
573 | } | |
574 | ||
26da23b6 LC |
575 | return queues; |
576 | } | |
577 | ||
578 | void ieee80211_flush_queues(struct ieee80211_local *local, | |
579 | struct ieee80211_sub_if_data *sdata) | |
580 | { | |
581 | unsigned int queues; | |
582 | ||
583 | if (!local->ops->flush) | |
584 | return; | |
585 | ||
586 | queues = ieee80211_get_vif_queues(local, sdata); | |
587 | ||
59f48fe2 | 588 | ieee80211_stop_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
589 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
590 | false); | |
445ea4e8 | 591 | |
77be2c54 | 592 | drv_flush(local, sdata, queues, false); |
445ea4e8 | 593 | |
59f48fe2 | 594 | ieee80211_wake_queues_by_reason(&local->hw, queues, |
cca07b00 LC |
595 | IEEE80211_QUEUE_STOP_REASON_FLUSH, |
596 | false); | |
39ecc01d JB |
597 | } |
598 | ||
26da23b6 LC |
599 | void ieee80211_stop_vif_queues(struct ieee80211_local *local, |
600 | struct ieee80211_sub_if_data *sdata, | |
601 | enum queue_stop_reason reason) | |
602 | { | |
603 | ieee80211_stop_queues_by_reason(&local->hw, | |
604 | ieee80211_get_vif_queues(local, sdata), | |
605 | reason, true); | |
606 | } | |
607 | ||
608 | void ieee80211_wake_vif_queues(struct ieee80211_local *local, | |
609 | struct ieee80211_sub_if_data *sdata, | |
610 | enum queue_stop_reason reason) | |
611 | { | |
612 | ieee80211_wake_queues_by_reason(&local->hw, | |
613 | ieee80211_get_vif_queues(local, sdata), | |
614 | reason, true); | |
615 | } | |
616 | ||
c7c71066 JB |
617 | static void __iterate_active_interfaces(struct ieee80211_local *local, |
618 | u32 iter_flags, | |
619 | void (*iterator)(void *data, u8 *mac, | |
620 | struct ieee80211_vif *vif), | |
621 | void *data) | |
dabeb344 | 622 | { |
dabeb344 JB |
623 | struct ieee80211_sub_if_data *sdata; |
624 | ||
c7c71066 | 625 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
2f561feb | 626 | switch (sdata->vif.type) { |
05c914fe | 627 | case NL80211_IFTYPE_MONITOR: |
31eba5bc FF |
628 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
629 | continue; | |
630 | break; | |
05c914fe | 631 | case NL80211_IFTYPE_AP_VLAN: |
2f561feb | 632 | continue; |
2ca27bcf | 633 | default: |
2f561feb ID |
634 | break; |
635 | } | |
8b2c9824 JB |
636 | if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
637 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
638 | continue; | |
9607e6b6 | 639 | if (ieee80211_sdata_running(sdata)) |
47846c9b | 640 | iterator(data, sdata->vif.addr, |
2f561feb ID |
641 | &sdata->vif); |
642 | } | |
643 | ||
c7c71066 JB |
644 | sdata = rcu_dereference_check(local->monitor_sdata, |
645 | lockdep_is_held(&local->iflist_mtx) || | |
646 | lockdep_rtnl_is_held()); | |
8b2c9824 JB |
647 | if (sdata && |
648 | (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || | |
649 | sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
685fb72b | 650 | iterator(data, sdata->vif.addr, &sdata->vif); |
c7c71066 | 651 | } |
685fb72b | 652 | |
c7c71066 JB |
653 | void ieee80211_iterate_active_interfaces( |
654 | struct ieee80211_hw *hw, u32 iter_flags, | |
655 | void (*iterator)(void *data, u8 *mac, | |
656 | struct ieee80211_vif *vif), | |
657 | void *data) | |
658 | { | |
659 | struct ieee80211_local *local = hw_to_local(hw); | |
660 | ||
661 | mutex_lock(&local->iflist_mtx); | |
662 | __iterate_active_interfaces(local, iter_flags, iterator, data); | |
c771c9d8 | 663 | mutex_unlock(&local->iflist_mtx); |
2f561feb ID |
664 | } |
665 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces); | |
666 | ||
667 | void ieee80211_iterate_active_interfaces_atomic( | |
8b2c9824 | 668 | struct ieee80211_hw *hw, u32 iter_flags, |
2f561feb ID |
669 | void (*iterator)(void *data, u8 *mac, |
670 | struct ieee80211_vif *vif), | |
671 | void *data) | |
672 | { | |
673 | struct ieee80211_local *local = hw_to_local(hw); | |
2f561feb | 674 | |
e38bad47 | 675 | rcu_read_lock(); |
c7c71066 JB |
676 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
677 | rcu_read_unlock(); | |
678 | } | |
679 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); | |
dabeb344 | 680 | |
c7c71066 JB |
681 | void ieee80211_iterate_active_interfaces_rtnl( |
682 | struct ieee80211_hw *hw, u32 iter_flags, | |
683 | void (*iterator)(void *data, u8 *mac, | |
684 | struct ieee80211_vif *vif), | |
685 | void *data) | |
686 | { | |
687 | struct ieee80211_local *local = hw_to_local(hw); | |
e38bad47 | 688 | |
c7c71066 | 689 | ASSERT_RTNL(); |
685fb72b | 690 | |
c7c71066 | 691 | __iterate_active_interfaces(local, iter_flags, iterator, data); |
dabeb344 | 692 | } |
c7c71066 | 693 | EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); |
37ffc8da | 694 | |
ad7e718c JB |
695 | struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) |
696 | { | |
697 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
698 | ||
699 | if (!ieee80211_sdata_running(sdata) || | |
700 | !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) | |
701 | return NULL; | |
702 | return &sdata->vif; | |
703 | } | |
704 | EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); | |
705 | ||
42935eca LR |
706 | /* |
707 | * Nothing should have been stuffed into the workqueue during | |
708 | * the suspend->resume cycle. If this WARN is seen then there | |
709 | * is a bug with either the driver suspend or something in | |
710 | * mac80211 stuffing into the workqueue which we haven't yet | |
711 | * cleared during mac80211's suspend cycle. | |
712 | */ | |
713 | static bool ieee80211_can_queue_work(struct ieee80211_local *local) | |
714 | { | |
ceb99fe0 JB |
715 | if (WARN(local->suspended && !local->resuming, |
716 | "queueing ieee80211 work while going to suspend\n")) | |
717 | return false; | |
42935eca LR |
718 | |
719 | return true; | |
720 | } | |
721 | ||
722 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) | |
723 | { | |
724 | struct ieee80211_local *local = hw_to_local(hw); | |
725 | ||
726 | if (!ieee80211_can_queue_work(local)) | |
727 | return; | |
728 | ||
729 | queue_work(local->workqueue, work); | |
730 | } | |
731 | EXPORT_SYMBOL(ieee80211_queue_work); | |
732 | ||
733 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
734 | struct delayed_work *dwork, | |
735 | unsigned long delay) | |
736 | { | |
737 | struct ieee80211_local *local = hw_to_local(hw); | |
738 | ||
739 | if (!ieee80211_can_queue_work(local)) | |
740 | return; | |
741 | ||
742 | queue_delayed_work(local->workqueue, dwork, delay); | |
743 | } | |
744 | EXPORT_SYMBOL(ieee80211_queue_delayed_work); | |
745 | ||
35d865af | 746 | u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, |
dd76986b JB |
747 | struct ieee802_11_elems *elems, |
748 | u64 filter, u32 crc) | |
749 | { | |
750 | size_t left = len; | |
35d865af | 751 | const u8 *pos = start; |
dd76986b | 752 | bool calc_crc = filter != 0; |
fcff4f10 | 753 | DECLARE_BITMAP(seen_elems, 256); |
b2e506bf | 754 | const u8 *ie; |
dd76986b | 755 | |
fcff4f10 | 756 | bitmap_zero(seen_elems, 256); |
dd76986b JB |
757 | memset(elems, 0, sizeof(*elems)); |
758 | elems->ie_start = start; | |
759 | elems->total_len = len; | |
760 | ||
761 | while (left >= 2) { | |
762 | u8 id, elen; | |
fcff4f10 | 763 | bool elem_parse_failed; |
dd76986b JB |
764 | |
765 | id = *pos++; | |
766 | elen = *pos++; | |
767 | left -= 2; | |
768 | ||
fcff4f10 PS |
769 | if (elen > left) { |
770 | elems->parse_error = true; | |
dd76986b | 771 | break; |
fcff4f10 PS |
772 | } |
773 | ||
9690fb16 JB |
774 | switch (id) { |
775 | case WLAN_EID_SSID: | |
776 | case WLAN_EID_SUPP_RATES: | |
777 | case WLAN_EID_FH_PARAMS: | |
778 | case WLAN_EID_DS_PARAMS: | |
779 | case WLAN_EID_CF_PARAMS: | |
780 | case WLAN_EID_TIM: | |
781 | case WLAN_EID_IBSS_PARAMS: | |
782 | case WLAN_EID_CHALLENGE: | |
783 | case WLAN_EID_RSN: | |
784 | case WLAN_EID_ERP_INFO: | |
785 | case WLAN_EID_EXT_SUPP_RATES: | |
786 | case WLAN_EID_HT_CAPABILITY: | |
787 | case WLAN_EID_HT_OPERATION: | |
788 | case WLAN_EID_VHT_CAPABILITY: | |
789 | case WLAN_EID_VHT_OPERATION: | |
790 | case WLAN_EID_MESH_ID: | |
791 | case WLAN_EID_MESH_CONFIG: | |
792 | case WLAN_EID_PEER_MGMT: | |
793 | case WLAN_EID_PREQ: | |
794 | case WLAN_EID_PREP: | |
795 | case WLAN_EID_PERR: | |
796 | case WLAN_EID_RANN: | |
797 | case WLAN_EID_CHANNEL_SWITCH: | |
798 | case WLAN_EID_EXT_CHANSWITCH_ANN: | |
799 | case WLAN_EID_COUNTRY: | |
800 | case WLAN_EID_PWR_CONSTRAINT: | |
801 | case WLAN_EID_TIMEOUT_INTERVAL: | |
85220d71 | 802 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
b2e506bf | 803 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
8f2535b9 | 804 | case WLAN_EID_CHAN_SWITCH_PARAM: |
b2e506bf JB |
805 | /* |
806 | * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible | |
807 | * that if the content gets bigger it might be needed more than once | |
808 | */ | |
9690fb16 JB |
809 | if (test_bit(id, seen_elems)) { |
810 | elems->parse_error = true; | |
811 | left -= elen; | |
812 | pos += elen; | |
813 | continue; | |
814 | } | |
815 | break; | |
fcff4f10 | 816 | } |
dd76986b JB |
817 | |
818 | if (calc_crc && id < 64 && (filter & (1ULL << id))) | |
819 | crc = crc32_be(crc, pos - 2, elen + 2); | |
820 | ||
fcff4f10 PS |
821 | elem_parse_failed = false; |
822 | ||
dd76986b JB |
823 | switch (id) { |
824 | case WLAN_EID_SSID: | |
825 | elems->ssid = pos; | |
826 | elems->ssid_len = elen; | |
827 | break; | |
828 | case WLAN_EID_SUPP_RATES: | |
829 | elems->supp_rates = pos; | |
830 | elems->supp_rates_len = elen; | |
831 | break; | |
dd76986b | 832 | case WLAN_EID_DS_PARAMS: |
1cd8e88e JB |
833 | if (elen >= 1) |
834 | elems->ds_params = pos; | |
835 | else | |
836 | elem_parse_failed = true; | |
dd76986b | 837 | break; |
dd76986b JB |
838 | case WLAN_EID_TIM: |
839 | if (elen >= sizeof(struct ieee80211_tim_ie)) { | |
840 | elems->tim = (void *)pos; | |
841 | elems->tim_len = elen; | |
fcff4f10 PS |
842 | } else |
843 | elem_parse_failed = true; | |
dd76986b | 844 | break; |
dd76986b JB |
845 | case WLAN_EID_CHALLENGE: |
846 | elems->challenge = pos; | |
847 | elems->challenge_len = elen; | |
848 | break; | |
849 | case WLAN_EID_VENDOR_SPECIFIC: | |
850 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
851 | pos[2] == 0xf2) { | |
852 | /* Microsoft OUI (00:50:F2) */ | |
853 | ||
854 | if (calc_crc) | |
855 | crc = crc32_be(crc, pos - 2, elen + 2); | |
856 | ||
441a33ba | 857 | if (elen >= 5 && pos[3] == 2) { |
dd76986b JB |
858 | /* OUI Type 2 - WMM IE */ |
859 | if (pos[4] == 0) { | |
860 | elems->wmm_info = pos; | |
861 | elems->wmm_info_len = elen; | |
862 | } else if (pos[4] == 1) { | |
863 | elems->wmm_param = pos; | |
864 | elems->wmm_param_len = elen; | |
865 | } | |
866 | } | |
867 | } | |
868 | break; | |
869 | case WLAN_EID_RSN: | |
870 | elems->rsn = pos; | |
871 | elems->rsn_len = elen; | |
872 | break; | |
873 | case WLAN_EID_ERP_INFO: | |
1946bed9 JB |
874 | if (elen >= 1) |
875 | elems->erp_info = pos; | |
876 | else | |
877 | elem_parse_failed = true; | |
dd76986b JB |
878 | break; |
879 | case WLAN_EID_EXT_SUPP_RATES: | |
880 | elems->ext_supp_rates = pos; | |
881 | elems->ext_supp_rates_len = elen; | |
882 | break; | |
883 | case WLAN_EID_HT_CAPABILITY: | |
884 | if (elen >= sizeof(struct ieee80211_ht_cap)) | |
885 | elems->ht_cap_elem = (void *)pos; | |
fcff4f10 PS |
886 | else |
887 | elem_parse_failed = true; | |
dd76986b | 888 | break; |
074d46d1 JB |
889 | case WLAN_EID_HT_OPERATION: |
890 | if (elen >= sizeof(struct ieee80211_ht_operation)) | |
891 | elems->ht_operation = (void *)pos; | |
fcff4f10 PS |
892 | else |
893 | elem_parse_failed = true; | |
dd76986b | 894 | break; |
818255ea MP |
895 | case WLAN_EID_VHT_CAPABILITY: |
896 | if (elen >= sizeof(struct ieee80211_vht_cap)) | |
897 | elems->vht_cap_elem = (void *)pos; | |
898 | else | |
899 | elem_parse_failed = true; | |
900 | break; | |
901 | case WLAN_EID_VHT_OPERATION: | |
902 | if (elen >= sizeof(struct ieee80211_vht_operation)) | |
903 | elems->vht_operation = (void *)pos; | |
904 | else | |
905 | elem_parse_failed = true; | |
906 | break; | |
bee7f586 JB |
907 | case WLAN_EID_OPMODE_NOTIF: |
908 | if (elen > 0) | |
909 | elems->opmode_notif = pos; | |
910 | else | |
911 | elem_parse_failed = true; | |
912 | break; | |
dd76986b JB |
913 | case WLAN_EID_MESH_ID: |
914 | elems->mesh_id = pos; | |
915 | elems->mesh_id_len = elen; | |
916 | break; | |
917 | case WLAN_EID_MESH_CONFIG: | |
918 | if (elen >= sizeof(struct ieee80211_meshconf_ie)) | |
919 | elems->mesh_config = (void *)pos; | |
fcff4f10 PS |
920 | else |
921 | elem_parse_failed = true; | |
dd76986b JB |
922 | break; |
923 | case WLAN_EID_PEER_MGMT: | |
924 | elems->peering = pos; | |
925 | elems->peering_len = elen; | |
926 | break; | |
3f52b7e3 MP |
927 | case WLAN_EID_MESH_AWAKE_WINDOW: |
928 | if (elen >= 2) | |
929 | elems->awake_window = (void *)pos; | |
930 | break; | |
dd76986b JB |
931 | case WLAN_EID_PREQ: |
932 | elems->preq = pos; | |
933 | elems->preq_len = elen; | |
934 | break; | |
935 | case WLAN_EID_PREP: | |
936 | elems->prep = pos; | |
937 | elems->prep_len = elen; | |
938 | break; | |
939 | case WLAN_EID_PERR: | |
940 | elems->perr = pos; | |
941 | elems->perr_len = elen; | |
942 | break; | |
943 | case WLAN_EID_RANN: | |
944 | if (elen >= sizeof(struct ieee80211_rann_ie)) | |
945 | elems->rann = (void *)pos; | |
fcff4f10 PS |
946 | else |
947 | elem_parse_failed = true; | |
dd76986b JB |
948 | break; |
949 | case WLAN_EID_CHANNEL_SWITCH: | |
5bc1420b JB |
950 | if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
951 | elem_parse_failed = true; | |
952 | break; | |
953 | } | |
954 | elems->ch_switch_ie = (void *)pos; | |
dd76986b | 955 | break; |
b4f286a1 JB |
956 | case WLAN_EID_EXT_CHANSWITCH_ANN: |
957 | if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { | |
958 | elem_parse_failed = true; | |
959 | break; | |
960 | } | |
961 | elems->ext_chansw_ie = (void *)pos; | |
962 | break; | |
85220d71 JB |
963 | case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
964 | if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { | |
965 | elem_parse_failed = true; | |
966 | break; | |
967 | } | |
968 | elems->sec_chan_offs = (void *)pos; | |
969 | break; | |
8f2535b9 CYY |
970 | case WLAN_EID_CHAN_SWITCH_PARAM: |
971 | if (elen != | |
972 | sizeof(*elems->mesh_chansw_params_ie)) { | |
973 | elem_parse_failed = true; | |
974 | break; | |
975 | } | |
976 | elems->mesh_chansw_params_ie = (void *)pos; | |
977 | break; | |
b2e506bf JB |
978 | case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
979 | if (!action || | |
980 | elen != sizeof(*elems->wide_bw_chansw_ie)) { | |
981 | elem_parse_failed = true; | |
982 | break; | |
983 | } | |
984 | elems->wide_bw_chansw_ie = (void *)pos; | |
985 | break; | |
986 | case WLAN_EID_CHANNEL_SWITCH_WRAPPER: | |
987 | if (action) { | |
988 | elem_parse_failed = true; | |
989 | break; | |
990 | } | |
991 | /* | |
992 | * This is a bit tricky, but as we only care about | |
993 | * the wide bandwidth channel switch element, so | |
994 | * just parse it out manually. | |
995 | */ | |
996 | ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, | |
997 | pos, elen); | |
998 | if (ie) { | |
999 | if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) | |
1000 | elems->wide_bw_chansw_ie = | |
1001 | (void *)(ie + 2); | |
1002 | else | |
1003 | elem_parse_failed = true; | |
1004 | } | |
1005 | break; | |
dd76986b JB |
1006 | case WLAN_EID_COUNTRY: |
1007 | elems->country_elem = pos; | |
1008 | elems->country_elem_len = elen; | |
1009 | break; | |
1010 | case WLAN_EID_PWR_CONSTRAINT: | |
761a48d2 JB |
1011 | if (elen != 1) { |
1012 | elem_parse_failed = true; | |
1013 | break; | |
1014 | } | |
dd76986b | 1015 | elems->pwr_constr_elem = pos; |
dd76986b JB |
1016 | break; |
1017 | case WLAN_EID_TIMEOUT_INTERVAL: | |
79ba1d89 JB |
1018 | if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
1019 | elems->timeout_int = (void *)pos; | |
1020 | else | |
1021 | elem_parse_failed = true; | |
dd76986b JB |
1022 | break; |
1023 | default: | |
1024 | break; | |
1025 | } | |
1026 | ||
fcff4f10 PS |
1027 | if (elem_parse_failed) |
1028 | elems->parse_error = true; | |
1029 | else | |
5df45690 | 1030 | __set_bit(id, seen_elems); |
fcff4f10 | 1031 | |
dd76986b JB |
1032 | left -= elen; |
1033 | pos += elen; | |
1034 | } | |
1035 | ||
fcff4f10 PS |
1036 | if (left != 0) |
1037 | elems->parse_error = true; | |
1038 | ||
dd76986b JB |
1039 | return crc; |
1040 | } | |
1041 | ||
3abead59 JB |
1042 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
1043 | bool bss_notify) | |
5825fe10 JB |
1044 | { |
1045 | struct ieee80211_local *local = sdata->local; | |
1046 | struct ieee80211_tx_queue_params qparam; | |
55de908a | 1047 | struct ieee80211_chanctx_conf *chanctx_conf; |
54bcbc69 | 1048 | int ac; |
a8ce8544 | 1049 | bool use_11b, enable_qos; |
aa837e1d | 1050 | int aCWmin, aCWmax; |
5825fe10 JB |
1051 | |
1052 | if (!local->ops->conf_tx) | |
1053 | return; | |
1054 | ||
54bcbc69 JB |
1055 | if (local->hw.queues < IEEE80211_NUM_ACS) |
1056 | return; | |
1057 | ||
5825fe10 JB |
1058 | memset(&qparam, 0, sizeof(qparam)); |
1059 | ||
55de908a JB |
1060 | rcu_read_lock(); |
1061 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1062 | use_11b = (chanctx_conf && | |
4bf88530 | 1063 | chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) && |
aa837e1d | 1064 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); |
55de908a | 1065 | rcu_read_unlock(); |
5825fe10 | 1066 | |
a8ce8544 SG |
1067 | /* |
1068 | * By default disable QoS in STA mode for old access points, which do | |
1069 | * not support 802.11e. New APs will provide proper queue parameters, | |
1070 | * that we will configure later. | |
1071 | */ | |
1072 | enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION); | |
1073 | ||
1f4ffde8 FZ |
1074 | /* Set defaults according to 802.11-2007 Table 7-37 */ |
1075 | aCWmax = 1023; | |
1076 | if (use_11b) | |
1077 | aCWmin = 31; | |
1078 | else | |
1079 | aCWmin = 15; | |
1080 | ||
1081 | /* Confiure old 802.11b/g medium access rules. */ | |
1082 | qparam.cw_max = aCWmax; | |
1083 | qparam.cw_min = aCWmin; | |
1084 | qparam.txop = 0; | |
1085 | qparam.aifs = 2; | |
aa837e1d | 1086 | |
1f4ffde8 FZ |
1087 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1088 | /* Update if QoS is enabled. */ | |
a8ce8544 SG |
1089 | if (enable_qos) { |
1090 | switch (ac) { | |
1091 | case IEEE80211_AC_BK: | |
1092 | qparam.cw_max = aCWmax; | |
1093 | qparam.cw_min = aCWmin; | |
1094 | qparam.txop = 0; | |
1095 | qparam.aifs = 7; | |
1096 | break; | |
1097 | /* never happens but let's not leave undefined */ | |
1098 | default: | |
1099 | case IEEE80211_AC_BE: | |
1100 | qparam.cw_max = aCWmax; | |
1101 | qparam.cw_min = aCWmin; | |
1102 | qparam.txop = 0; | |
1103 | qparam.aifs = 3; | |
1104 | break; | |
1105 | case IEEE80211_AC_VI: | |
1106 | qparam.cw_max = aCWmin; | |
1107 | qparam.cw_min = (aCWmin + 1) / 2 - 1; | |
1108 | if (use_11b) | |
1109 | qparam.txop = 6016/32; | |
1110 | else | |
1111 | qparam.txop = 3008/32; | |
1112 | qparam.aifs = 2; | |
1113 | break; | |
1114 | case IEEE80211_AC_VO: | |
1115 | qparam.cw_max = (aCWmin + 1) / 2 - 1; | |
1116 | qparam.cw_min = (aCWmin + 1) / 4 - 1; | |
1117 | if (use_11b) | |
1118 | qparam.txop = 3264/32; | |
1119 | else | |
1120 | qparam.txop = 1504/32; | |
1121 | qparam.aifs = 2; | |
1122 | break; | |
1123 | } | |
aa837e1d | 1124 | } |
5825fe10 | 1125 | |
ab13315a KV |
1126 | qparam.uapsd = false; |
1127 | ||
54bcbc69 JB |
1128 | sdata->tx_conf[ac] = qparam; |
1129 | drv_conf_tx(local, sdata, ac, &qparam); | |
aa837e1d | 1130 | } |
e1b3ec1a | 1131 | |
f142c6b9 JB |
1132 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
1133 | sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { | |
a8ce8544 | 1134 | sdata->vif.bss_conf.qos = enable_qos; |
3abead59 JB |
1135 | if (bss_notify) |
1136 | ieee80211_bss_info_change_notify(sdata, | |
1137 | BSS_CHANGED_QOS); | |
d9734979 | 1138 | } |
5825fe10 | 1139 | } |
e50db65c | 1140 | |
46900298 | 1141 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
700e8ea6 | 1142 | u16 transaction, u16 auth_alg, u16 status, |
4a3cb702 | 1143 | const u8 *extra, size_t extra_len, const u8 *da, |
1672c0e3 JB |
1144 | const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
1145 | u32 tx_flags) | |
46900298 JB |
1146 | { |
1147 | struct ieee80211_local *local = sdata->local; | |
1148 | struct sk_buff *skb; | |
1149 | struct ieee80211_mgmt *mgmt; | |
fffd0934 | 1150 | int err; |
46900298 | 1151 | |
15e230ab FZ |
1152 | /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
1153 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 6 + extra_len); | |
d15b8459 | 1154 | if (!skb) |
46900298 | 1155 | return; |
d15b8459 | 1156 | |
46900298 JB |
1157 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1158 | ||
1159 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
1160 | memset(mgmt, 0, 24 + 6); | |
1161 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1162 | IEEE80211_STYPE_AUTH); | |
efa6a09d | 1163 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 1164 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
1165 | memcpy(mgmt->bssid, bssid, ETH_ALEN); |
1166 | mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); | |
1167 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
700e8ea6 | 1168 | mgmt->u.auth.status_code = cpu_to_le16(status); |
46900298 JB |
1169 | if (extra) |
1170 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
46900298 | 1171 | |
fffd0934 JB |
1172 | if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
1173 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
1174 | err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); | |
1175 | WARN_ON(err); | |
1176 | } | |
1177 | ||
1672c0e3 JB |
1178 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1179 | tx_flags; | |
62ae67be | 1180 | ieee80211_tx_skb(sdata, skb); |
46900298 JB |
1181 | } |
1182 | ||
6ae16775 AQ |
1183 | void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
1184 | const u8 *bssid, u16 stype, u16 reason, | |
1185 | bool send_frame, u8 *frame_buf) | |
1186 | { | |
1187 | struct ieee80211_local *local = sdata->local; | |
1188 | struct sk_buff *skb; | |
1189 | struct ieee80211_mgmt *mgmt = (void *)frame_buf; | |
1190 | ||
1191 | /* build frame */ | |
1192 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); | |
1193 | mgmt->duration = 0; /* initialize only */ | |
1194 | mgmt->seq_ctrl = 0; /* initialize only */ | |
1195 | memcpy(mgmt->da, bssid, ETH_ALEN); | |
1196 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
1197 | memcpy(mgmt->bssid, bssid, ETH_ALEN); | |
1198 | /* u.deauth.reason_code == u.disassoc.reason_code */ | |
1199 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
1200 | ||
1201 | if (send_frame) { | |
1202 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
1203 | IEEE80211_DEAUTH_FRAME_LEN); | |
1204 | if (!skb) | |
1205 | return; | |
1206 | ||
1207 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1208 | ||
1209 | /* copy in frame */ | |
1210 | memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN), | |
1211 | mgmt, IEEE80211_DEAUTH_FRAME_LEN); | |
1212 | ||
1213 | if (sdata->vif.type != NL80211_IFTYPE_STATION || | |
1214 | !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) | |
1215 | IEEE80211_SKB_CB(skb)->flags |= | |
1216 | IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1217 | ||
1218 | ieee80211_tx_skb(sdata, skb); | |
1219 | } | |
1220 | } | |
1221 | ||
c56ef672 DS |
1222 | static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, |
1223 | u8 *buffer, size_t buffer_len, | |
1224 | const u8 *ie, size_t ie_len, | |
1225 | enum ieee80211_band band, | |
1226 | u32 rate_mask, | |
1227 | struct cfg80211_chan_def *chandef, | |
1228 | size_t *offset) | |
de95a54b JB |
1229 | { |
1230 | struct ieee80211_supported_band *sband; | |
c604b9f2 | 1231 | u8 *pos = buffer, *end = buffer + buffer_len; |
c56ef672 | 1232 | size_t noffset; |
8e664fb3 | 1233 | int supp_rates_len, i; |
8dcb2003 JM |
1234 | u8 rates[32]; |
1235 | int num_rates; | |
1236 | int ext_rates_len; | |
2103dec1 SW |
1237 | int shift; |
1238 | u32 rate_flags; | |
de95a54b | 1239 | |
c56ef672 DS |
1240 | *offset = 0; |
1241 | ||
4d36ec58 | 1242 | sband = local->hw.wiphy->bands[band]; |
d811b3d5 AN |
1243 | if (WARN_ON_ONCE(!sband)) |
1244 | return 0; | |
de95a54b | 1245 | |
2103dec1 SW |
1246 | rate_flags = ieee80211_chandef_rate_flags(chandef); |
1247 | shift = ieee80211_chandef_get_shift(chandef); | |
1248 | ||
8dcb2003 JM |
1249 | num_rates = 0; |
1250 | for (i = 0; i < sband->n_bitrates; i++) { | |
1251 | if ((BIT(i) & rate_mask) == 0) | |
1252 | continue; /* skip rate */ | |
2103dec1 SW |
1253 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
1254 | continue; | |
1255 | ||
1256 | rates[num_rates++] = | |
1257 | (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
1258 | (1 << shift) * 5); | |
8dcb2003 JM |
1259 | } |
1260 | ||
1261 | supp_rates_len = min_t(int, num_rates, 8); | |
8e664fb3 | 1262 | |
c604b9f2 JB |
1263 | if (end - pos < 2 + supp_rates_len) |
1264 | goto out_err; | |
de95a54b | 1265 | *pos++ = WLAN_EID_SUPP_RATES; |
8e664fb3 | 1266 | *pos++ = supp_rates_len; |
8dcb2003 JM |
1267 | memcpy(pos, rates, supp_rates_len); |
1268 | pos += supp_rates_len; | |
8e664fb3 JB |
1269 | |
1270 | /* insert "request information" if in custom IEs */ | |
1271 | if (ie && ie_len) { | |
1272 | static const u8 before_extrates[] = { | |
1273 | WLAN_EID_SSID, | |
1274 | WLAN_EID_SUPP_RATES, | |
1275 | WLAN_EID_REQUEST, | |
1276 | }; | |
1277 | noffset = ieee80211_ie_split(ie, ie_len, | |
1278 | before_extrates, | |
1279 | ARRAY_SIZE(before_extrates), | |
c56ef672 DS |
1280 | *offset); |
1281 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1282 | goto out_err; |
c56ef672 DS |
1283 | memcpy(pos, ie + *offset, noffset - *offset); |
1284 | pos += noffset - *offset; | |
1285 | *offset = noffset; | |
8e664fb3 JB |
1286 | } |
1287 | ||
8dcb2003 JM |
1288 | ext_rates_len = num_rates - supp_rates_len; |
1289 | if (ext_rates_len > 0) { | |
c604b9f2 JB |
1290 | if (end - pos < 2 + ext_rates_len) |
1291 | goto out_err; | |
8e664fb3 | 1292 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8dcb2003 JM |
1293 | *pos++ = ext_rates_len; |
1294 | memcpy(pos, rates + supp_rates_len, ext_rates_len); | |
1295 | pos += ext_rates_len; | |
8e664fb3 JB |
1296 | } |
1297 | ||
2103dec1 | 1298 | if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) { |
c604b9f2 JB |
1299 | if (end - pos < 3) |
1300 | goto out_err; | |
651b5225 JM |
1301 | *pos++ = WLAN_EID_DS_PARAMS; |
1302 | *pos++ = 1; | |
2103dec1 SW |
1303 | *pos++ = ieee80211_frequency_to_channel( |
1304 | chandef->chan->center_freq); | |
651b5225 JM |
1305 | } |
1306 | ||
8e664fb3 JB |
1307 | /* insert custom IEs that go before HT */ |
1308 | if (ie && ie_len) { | |
1309 | static const u8 before_ht[] = { | |
1310 | WLAN_EID_SSID, | |
1311 | WLAN_EID_SUPP_RATES, | |
1312 | WLAN_EID_REQUEST, | |
1313 | WLAN_EID_EXT_SUPP_RATES, | |
1314 | WLAN_EID_DS_PARAMS, | |
1315 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1316 | }; | |
1317 | noffset = ieee80211_ie_split(ie, ie_len, | |
1318 | before_ht, ARRAY_SIZE(before_ht), | |
c56ef672 DS |
1319 | *offset); |
1320 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1321 | goto out_err; |
c56ef672 DS |
1322 | memcpy(pos, ie + *offset, noffset - *offset); |
1323 | pos += noffset - *offset; | |
1324 | *offset = noffset; | |
de95a54b JB |
1325 | } |
1326 | ||
c604b9f2 JB |
1327 | if (sband->ht_cap.ht_supported) { |
1328 | if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) | |
1329 | goto out_err; | |
ef96a842 BG |
1330 | pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
1331 | sband->ht_cap.cap); | |
c604b9f2 | 1332 | } |
5ef2d41a | 1333 | |
de95a54b JB |
1334 | /* |
1335 | * If adding more here, adjust code in main.c | |
1336 | * that calculates local->scan_ies_len. | |
1337 | */ | |
1338 | ||
4d952300 | 1339 | /* insert custom IEs that go before VHT */ |
8e664fb3 | 1340 | if (ie && ie_len) { |
4d952300 JB |
1341 | static const u8 before_vht[] = { |
1342 | WLAN_EID_SSID, | |
1343 | WLAN_EID_SUPP_RATES, | |
1344 | WLAN_EID_REQUEST, | |
1345 | WLAN_EID_EXT_SUPP_RATES, | |
1346 | WLAN_EID_DS_PARAMS, | |
1347 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
1348 | WLAN_EID_HT_CAPABILITY, | |
1349 | WLAN_EID_BSS_COEX_2040, | |
1350 | WLAN_EID_EXT_CAPABILITY, | |
1351 | WLAN_EID_SSID_LIST, | |
1352 | WLAN_EID_CHANNEL_USAGE, | |
1353 | WLAN_EID_INTERWORKING, | |
1354 | /* mesh ID can't happen here */ | |
1355 | /* 60 GHz can't happen here right now */ | |
1356 | }; | |
1357 | noffset = ieee80211_ie_split(ie, ie_len, | |
1358 | before_vht, ARRAY_SIZE(before_vht), | |
c56ef672 DS |
1359 | *offset); |
1360 | if (end - pos < noffset - *offset) | |
c604b9f2 | 1361 | goto out_err; |
c56ef672 DS |
1362 | memcpy(pos, ie + *offset, noffset - *offset); |
1363 | pos += noffset - *offset; | |
1364 | *offset = noffset; | |
de95a54b JB |
1365 | } |
1366 | ||
c604b9f2 JB |
1367 | if (sband->vht_cap.vht_supported) { |
1368 | if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) | |
1369 | goto out_err; | |
ba0afa2f MP |
1370 | pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
1371 | sband->vht_cap.cap); | |
c604b9f2 | 1372 | } |
ba0afa2f | 1373 | |
c604b9f2 JB |
1374 | return pos - buffer; |
1375 | out_err: | |
1376 | WARN_ONCE(1, "not enough space for preq IEs\n"); | |
de95a54b JB |
1377 | return pos - buffer; |
1378 | } | |
1379 | ||
c56ef672 DS |
1380 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
1381 | size_t buffer_len, | |
1382 | struct ieee80211_scan_ies *ie_desc, | |
1383 | const u8 *ie, size_t ie_len, | |
1384 | u8 bands_used, u32 *rate_masks, | |
1385 | struct cfg80211_chan_def *chandef) | |
1386 | { | |
1387 | size_t pos = 0, old_pos = 0, custom_ie_offset = 0; | |
1388 | int i; | |
1389 | ||
1390 | memset(ie_desc, 0, sizeof(*ie_desc)); | |
1391 | ||
1392 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { | |
1393 | if (bands_used & BIT(i)) { | |
1394 | pos += ieee80211_build_preq_ies_band(local, | |
1395 | buffer + pos, | |
1396 | buffer_len - pos, | |
1397 | ie, ie_len, i, | |
1398 | rate_masks[i], | |
1399 | chandef, | |
1400 | &custom_ie_offset); | |
1401 | ie_desc->ies[i] = buffer + old_pos; | |
1402 | ie_desc->len[i] = pos - old_pos; | |
1403 | old_pos = pos; | |
1404 | } | |
1405 | } | |
1406 | ||
1407 | /* add any remaining custom IEs */ | |
1408 | if (ie && ie_len) { | |
1409 | if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, | |
1410 | "not enough space for preq custom IEs\n")) | |
1411 | return pos; | |
1412 | memcpy(buffer + pos, ie + custom_ie_offset, | |
1413 | ie_len - custom_ie_offset); | |
1414 | ie_desc->common_ies = buffer + pos; | |
1415 | ie_desc->common_ie_len = ie_len - custom_ie_offset; | |
1416 | pos += ie_len - custom_ie_offset; | |
1417 | } | |
1418 | ||
1419 | return pos; | |
1420 | }; | |
1421 | ||
a619a4c0 | 1422 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
85a237fe | 1423 | u8 *dst, u32 ratemask, |
6b77863b | 1424 | struct ieee80211_channel *chan, |
a619a4c0 | 1425 | const u8 *ssid, size_t ssid_len, |
a806c558 PS |
1426 | const u8 *ie, size_t ie_len, |
1427 | bool directed) | |
46900298 JB |
1428 | { |
1429 | struct ieee80211_local *local = sdata->local; | |
2103dec1 | 1430 | struct cfg80211_chan_def chandef; |
46900298 JB |
1431 | struct sk_buff *skb; |
1432 | struct ieee80211_mgmt *mgmt; | |
b9a9ada1 | 1433 | int ies_len; |
c56ef672 DS |
1434 | u32 rate_masks[IEEE80211_NUM_BANDS] = {}; |
1435 | struct ieee80211_scan_ies dummy_ie_desc; | |
46900298 | 1436 | |
a806c558 PS |
1437 | /* |
1438 | * Do not send DS Channel parameter for directed probe requests | |
1439 | * in order to maximize the chance that we get a response. Some | |
1440 | * badly-behaved APs don't respond when this parameter is included. | |
1441 | */ | |
2103dec1 | 1442 | chandef.width = sdata->vif.bss_conf.chandef.width; |
a806c558 | 1443 | if (directed) |
2103dec1 | 1444 | chandef.chan = NULL; |
a806c558 | 1445 | else |
2103dec1 | 1446 | chandef.chan = chan; |
651b5225 | 1447 | |
7c12ce8b | 1448 | skb = ieee80211_probereq_get(&local->hw, &sdata->vif, |
b9a9ada1 | 1449 | ssid, ssid_len, 100 + ie_len); |
5b2bbf75 | 1450 | if (!skb) |
b9a9ada1 JB |
1451 | return NULL; |
1452 | ||
c56ef672 | 1453 | rate_masks[chan->band] = ratemask; |
b9a9ada1 | 1454 | ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), |
c56ef672 DS |
1455 | skb_tailroom(skb), &dummy_ie_desc, |
1456 | ie, ie_len, BIT(chan->band), | |
1457 | rate_masks, &chandef); | |
b9a9ada1 | 1458 | skb_put(skb, ies_len); |
7c12ce8b | 1459 | |
46900298 | 1460 | if (dst) { |
7c12ce8b | 1461 | mgmt = (struct ieee80211_mgmt *) skb->data; |
46900298 JB |
1462 | memcpy(mgmt->da, dst, ETH_ALEN); |
1463 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
46900298 | 1464 | } |
46900298 | 1465 | |
62ae67be | 1466 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
5b2bbf75 | 1467 | |
a619a4c0 JO |
1468 | return skb; |
1469 | } | |
1470 | ||
1471 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1472 | const u8 *ssid, size_t ssid_len, | |
a806c558 | 1473 | const u8 *ie, size_t ie_len, |
1672c0e3 | 1474 | u32 ratemask, bool directed, u32 tx_flags, |
55de908a | 1475 | struct ieee80211_channel *channel, bool scan) |
a619a4c0 JO |
1476 | { |
1477 | struct sk_buff *skb; | |
1478 | ||
fe94fe05 | 1479 | skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel, |
6b77863b | 1480 | ssid, ssid_len, |
85a237fe | 1481 | ie, ie_len, directed); |
aad14ceb | 1482 | if (skb) { |
1672c0e3 | 1483 | IEEE80211_SKB_CB(skb)->flags |= tx_flags; |
55de908a JB |
1484 | if (scan) |
1485 | ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); | |
1486 | else | |
1487 | ieee80211_tx_skb(sdata, skb); | |
aad14ceb | 1488 | } |
46900298 JB |
1489 | } |
1490 | ||
2103dec1 | 1491 | u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
46900298 | 1492 | struct ieee802_11_elems *elems, |
9ebb61a2 | 1493 | enum ieee80211_band band, u32 *basic_rates) |
46900298 JB |
1494 | { |
1495 | struct ieee80211_supported_band *sband; | |
46900298 | 1496 | size_t num_rates; |
2103dec1 SW |
1497 | u32 supp_rates, rate_flags; |
1498 | int i, j, shift; | |
1499 | sband = sdata->local->hw.wiphy->bands[band]; | |
1500 | ||
1501 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
1502 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
46900298 | 1503 | |
4ee73f33 MK |
1504 | if (WARN_ON(!sband)) |
1505 | return 1; | |
46900298 | 1506 | |
46900298 JB |
1507 | num_rates = sband->n_bitrates; |
1508 | supp_rates = 0; | |
1509 | for (i = 0; i < elems->supp_rates_len + | |
1510 | elems->ext_supp_rates_len; i++) { | |
1511 | u8 rate = 0; | |
1512 | int own_rate; | |
9ebb61a2 | 1513 | bool is_basic; |
46900298 JB |
1514 | if (i < elems->supp_rates_len) |
1515 | rate = elems->supp_rates[i]; | |
1516 | else if (elems->ext_supp_rates) | |
1517 | rate = elems->ext_supp_rates | |
1518 | [i - elems->supp_rates_len]; | |
1519 | own_rate = 5 * (rate & 0x7f); | |
9ebb61a2 AN |
1520 | is_basic = !!(rate & 0x80); |
1521 | ||
1522 | if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
1523 | continue; | |
1524 | ||
1525 | for (j = 0; j < num_rates; j++) { | |
2103dec1 SW |
1526 | int brate; |
1527 | if ((rate_flags & sband->bitrates[j].flags) | |
1528 | != rate_flags) | |
1529 | continue; | |
1530 | ||
1531 | brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, | |
1532 | 1 << shift); | |
1533 | ||
1534 | if (brate == own_rate) { | |
46900298 | 1535 | supp_rates |= BIT(j); |
9ebb61a2 AN |
1536 | if (basic_rates && is_basic) |
1537 | *basic_rates |= BIT(j); | |
1538 | } | |
1539 | } | |
46900298 JB |
1540 | } |
1541 | return supp_rates; | |
1542 | } | |
f2753ddb | 1543 | |
84f6a01c JB |
1544 | void ieee80211_stop_device(struct ieee80211_local *local) |
1545 | { | |
1546 | ieee80211_led_radio(local, false); | |
67408c8c | 1547 | ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
84f6a01c JB |
1548 | |
1549 | cancel_work_sync(&local->reconfig_filter); | |
84f6a01c JB |
1550 | |
1551 | flush_workqueue(local->workqueue); | |
678f415f | 1552 | drv_stop(local); |
84f6a01c JB |
1553 | } |
1554 | ||
f6837ba8 JB |
1555 | static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) |
1556 | { | |
1557 | struct ieee80211_sub_if_data *sdata; | |
1558 | struct ieee80211_chanctx *ctx; | |
1559 | ||
1560 | /* | |
1561 | * We get here if during resume the device can't be restarted properly. | |
1562 | * We might also get here if this happens during HW reset, which is a | |
1563 | * slightly different situation and we need to drop all connections in | |
1564 | * the latter case. | |
1565 | * | |
1566 | * Ask cfg80211 to turn off all interfaces, this will result in more | |
1567 | * warnings but at least we'll then get into a clean stopped state. | |
1568 | */ | |
1569 | ||
1570 | local->resuming = false; | |
1571 | local->suspended = false; | |
1572 | local->started = false; | |
1573 | ||
1574 | /* scheduled scan clearly can't be running any more, but tell | |
1575 | * cfg80211 and clear local state | |
1576 | */ | |
1577 | ieee80211_sched_scan_end(local); | |
1578 | ||
1579 | list_for_each_entry(sdata, &local->interfaces, list) | |
1580 | sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; | |
1581 | ||
1582 | /* Mark channel contexts as not being in the driver any more to avoid | |
1583 | * removing them from the driver during the shutdown process... | |
1584 | */ | |
1585 | mutex_lock(&local->chanctx_mtx); | |
1586 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
1587 | ctx->driver_present = false; | |
1588 | mutex_unlock(&local->chanctx_mtx); | |
1589 | ||
1590 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); | |
1591 | } | |
1592 | ||
153a5fc4 SG |
1593 | static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
1594 | struct ieee80211_sub_if_data *sdata) | |
1595 | { | |
1596 | struct ieee80211_chanctx_conf *conf; | |
1597 | struct ieee80211_chanctx *ctx; | |
1598 | ||
1599 | if (!local->use_chanctx) | |
1600 | return; | |
1601 | ||
1602 | mutex_lock(&local->chanctx_mtx); | |
1603 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
1604 | lockdep_is_held(&local->chanctx_mtx)); | |
1605 | if (conf) { | |
1606 | ctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1607 | drv_assign_vif_chanctx(local, sdata, ctx); | |
1608 | } | |
1609 | mutex_unlock(&local->chanctx_mtx); | |
1610 | } | |
1611 | ||
f2753ddb JB |
1612 | int ieee80211_reconfig(struct ieee80211_local *local) |
1613 | { | |
1614 | struct ieee80211_hw *hw = &local->hw; | |
1615 | struct ieee80211_sub_if_data *sdata; | |
55de908a | 1616 | struct ieee80211_chanctx *ctx; |
f2753ddb | 1617 | struct sta_info *sta; |
2683d65b | 1618 | int res, i; |
d888130a | 1619 | bool reconfig_due_to_wowlan = false; |
d43c6b6e DS |
1620 | struct ieee80211_sub_if_data *sched_scan_sdata; |
1621 | bool sched_scan_stopped = false; | |
d888130a | 1622 | |
8f21b0ad | 1623 | #ifdef CONFIG_PM |
ceb99fe0 JB |
1624 | if (local->suspended) |
1625 | local->resuming = true; | |
f2753ddb | 1626 | |
eecc4800 | 1627 | if (local->wowlan) { |
eecc4800 | 1628 | res = drv_resume(local); |
27b3eb9c | 1629 | local->wowlan = false; |
eecc4800 JB |
1630 | if (res < 0) { |
1631 | local->resuming = false; | |
1632 | return res; | |
1633 | } | |
1634 | if (res == 0) | |
1635 | goto wake_up; | |
1636 | WARN_ON(res > 1); | |
1637 | /* | |
1638 | * res is 1, which means the driver requested | |
1639 | * to go through a regular reset on wakeup. | |
1640 | */ | |
d888130a | 1641 | reconfig_due_to_wowlan = true; |
eecc4800 JB |
1642 | } |
1643 | #endif | |
94f9b97b JB |
1644 | /* everything else happens only if HW was up & running */ |
1645 | if (!local->open_count) | |
1646 | goto wake_up; | |
f2753ddb | 1647 | |
94f9b97b JB |
1648 | /* |
1649 | * Upon resume hardware can sometimes be goofy due to | |
1650 | * various platform / driver / bus issues, so restarting | |
1651 | * the device may at times not work immediately. Propagate | |
1652 | * the error. | |
1653 | */ | |
1654 | res = drv_start(local); | |
1655 | if (res) { | |
f6837ba8 JB |
1656 | if (local->suspended) |
1657 | WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); | |
1658 | else | |
1659 | WARN(1, "Hardware became unavailable during restart.\n"); | |
1660 | ieee80211_handle_reconfig_failure(local); | |
94f9b97b | 1661 | return res; |
f2753ddb JB |
1662 | } |
1663 | ||
7f281975 YAP |
1664 | /* setup fragmentation threshold */ |
1665 | drv_set_frag_threshold(local, hw->wiphy->frag_threshold); | |
1666 | ||
1667 | /* setup RTS threshold */ | |
1668 | drv_set_rts_threshold(local, hw->wiphy->rts_threshold); | |
1669 | ||
1670 | /* reset coverage class */ | |
1671 | drv_set_coverage_class(local, hw->wiphy->coverage_class); | |
1672 | ||
94f9b97b JB |
1673 | ieee80211_led_radio(local, true); |
1674 | ieee80211_mod_tpt_led_trig(local, | |
1675 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
1676 | ||
f2753ddb | 1677 | /* add interfaces */ |
4b6f1dd6 JB |
1678 | sdata = rtnl_dereference(local->monitor_sdata); |
1679 | if (sdata) { | |
3c3e21e7 JB |
1680 | /* in HW restart it exists already */ |
1681 | WARN_ON(local->resuming); | |
4b6f1dd6 JB |
1682 | res = drv_add_interface(local, sdata); |
1683 | if (WARN_ON(res)) { | |
0c2bef46 | 1684 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
4b6f1dd6 JB |
1685 | synchronize_net(); |
1686 | kfree(sdata); | |
1687 | } | |
1688 | } | |
1689 | ||
f2753ddb JB |
1690 | list_for_each_entry(sdata, &local->interfaces, list) { |
1691 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && | |
1692 | sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
1ed32e4f | 1693 | ieee80211_sdata_running(sdata)) |
7b7eab6f | 1694 | res = drv_add_interface(local, sdata); |
f2753ddb JB |
1695 | } |
1696 | ||
55de908a | 1697 | /* add channel contexts */ |
f0dea9c7 AS |
1698 | if (local->use_chanctx) { |
1699 | mutex_lock(&local->chanctx_mtx); | |
1700 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
5bcae31d MK |
1701 | if (ctx->replace_state != |
1702 | IEEE80211_CHANCTX_REPLACES_OTHER) | |
1703 | WARN_ON(drv_add_chanctx(local, ctx)); | |
f0dea9c7 | 1704 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1705 | |
7df180f7 ZG |
1706 | list_for_each_entry(sdata, &local->interfaces, list) { |
1707 | if (!ieee80211_sdata_running(sdata)) | |
1708 | continue; | |
1709 | ieee80211_assign_chanctx(local, sdata); | |
1710 | } | |
6352c87f | 1711 | |
7df180f7 ZG |
1712 | sdata = rtnl_dereference(local->monitor_sdata); |
1713 | if (sdata && ieee80211_sdata_running(sdata)) | |
1714 | ieee80211_assign_chanctx(local, sdata); | |
1715 | } | |
fe5f2559 | 1716 | |
f2753ddb | 1717 | /* add STAs back */ |
34e89507 JB |
1718 | mutex_lock(&local->sta_mtx); |
1719 | list_for_each_entry(sta, &local->sta_list, list) { | |
2e8d397e | 1720 | enum ieee80211_sta_state state; |
f09603a2 | 1721 | |
2e8d397e AN |
1722 | if (!sta->uploaded) |
1723 | continue; | |
1724 | ||
1725 | /* AP-mode stations will be added later */ | |
1726 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1727 | continue; | |
1728 | ||
1729 | for (state = IEEE80211_STA_NOTEXIST; | |
1730 | state < sta->sta_state; state++) | |
1731 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1732 | state + 1)); | |
f2753ddb | 1733 | } |
34e89507 | 1734 | mutex_unlock(&local->sta_mtx); |
f2753ddb | 1735 | |
2683d65b | 1736 | /* reconfigure tx conf */ |
54bcbc69 JB |
1737 | if (hw->queues >= IEEE80211_NUM_ACS) { |
1738 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1739 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1740 | sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
1741 | !ieee80211_sdata_running(sdata)) | |
1742 | continue; | |
f6f3def3 | 1743 | |
54bcbc69 JB |
1744 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1745 | drv_conf_tx(local, sdata, i, | |
1746 | &sdata->tx_conf[i]); | |
1747 | } | |
f6f3def3 | 1748 | } |
2683d65b | 1749 | |
f2753ddb JB |
1750 | /* reconfigure hardware */ |
1751 | ieee80211_hw_config(local, ~0); | |
1752 | ||
f2753ddb | 1753 | ieee80211_configure_filter(local); |
f2753ddb JB |
1754 | |
1755 | /* Finally also reconfigure all the BSS information */ | |
1756 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ac8dd506 JB |
1757 | u32 changed; |
1758 | ||
9607e6b6 | 1759 | if (!ieee80211_sdata_running(sdata)) |
f2753ddb | 1760 | continue; |
ac8dd506 JB |
1761 | |
1762 | /* common change flags for all interface types */ | |
1763 | changed = BSS_CHANGED_ERP_CTS_PROT | | |
1764 | BSS_CHANGED_ERP_PREAMBLE | | |
1765 | BSS_CHANGED_ERP_SLOT | | |
1766 | BSS_CHANGED_HT | | |
1767 | BSS_CHANGED_BASIC_RATES | | |
1768 | BSS_CHANGED_BEACON_INT | | |
1769 | BSS_CHANGED_BSSID | | |
4ced3f74 | 1770 | BSS_CHANGED_CQM | |
55de47f6 | 1771 | BSS_CHANGED_QOS | |
1ea6f9c0 JB |
1772 | BSS_CHANGED_IDLE | |
1773 | BSS_CHANGED_TXPOWER; | |
ac8dd506 | 1774 | |
f2753ddb JB |
1775 | switch (sdata->vif.type) { |
1776 | case NL80211_IFTYPE_STATION: | |
0d392e93 | 1777 | changed |= BSS_CHANGED_ASSOC | |
ab095877 EP |
1778 | BSS_CHANGED_ARP_FILTER | |
1779 | BSS_CHANGED_PS; | |
c65dd147 | 1780 | |
989c6505 AB |
1781 | /* Re-send beacon info report to the driver */ |
1782 | if (sdata->u.mgd.have_beacon) | |
1783 | changed |= BSS_CHANGED_BEACON_INFO; | |
c65dd147 | 1784 | |
8d61ffa5 | 1785 | sdata_lock(sdata); |
ac8dd506 | 1786 | ieee80211_bss_info_change_notify(sdata, changed); |
8d61ffa5 | 1787 | sdata_unlock(sdata); |
ac8dd506 | 1788 | break; |
f2753ddb | 1789 | case NL80211_IFTYPE_ADHOC: |
ac8dd506 JB |
1790 | changed |= BSS_CHANGED_IBSS; |
1791 | /* fall through */ | |
f2753ddb | 1792 | case NL80211_IFTYPE_AP: |
339afbf4 | 1793 | changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
e7979ac7 | 1794 | |
1041638f | 1795 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e7979ac7 AN |
1796 | changed |= BSS_CHANGED_AP_PROBE_RESP; |
1797 | ||
1041638f JB |
1798 | if (rcu_access_pointer(sdata->u.ap.beacon)) |
1799 | drv_start_ap(local, sdata); | |
1800 | } | |
1801 | ||
7827493b | 1802 | /* fall through */ |
f2753ddb | 1803 | case NL80211_IFTYPE_MESH_POINT: |
8da34932 JB |
1804 | if (sdata->vif.bss_conf.enable_beacon) { |
1805 | changed |= BSS_CHANGED_BEACON | | |
1806 | BSS_CHANGED_BEACON_ENABLED; | |
1807 | ieee80211_bss_info_change_notify(sdata, changed); | |
1808 | } | |
f2753ddb JB |
1809 | break; |
1810 | case NL80211_IFTYPE_WDS: | |
f2753ddb JB |
1811 | case NL80211_IFTYPE_AP_VLAN: |
1812 | case NL80211_IFTYPE_MONITOR: | |
98104fde | 1813 | case NL80211_IFTYPE_P2P_DEVICE: |
b205786e | 1814 | /* nothing to do */ |
f142c6b9 | 1815 | break; |
f2753ddb | 1816 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1817 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
1818 | case NL80211_IFTYPE_P2P_CLIENT: |
1819 | case NL80211_IFTYPE_P2P_GO: | |
f2753ddb JB |
1820 | WARN_ON(1); |
1821 | break; | |
1822 | } | |
1823 | } | |
1824 | ||
8e1b23b9 ES |
1825 | ieee80211_recalc_ps(local, -1); |
1826 | ||
6e1b1b24 EP |
1827 | /* |
1828 | * The sta might be in psm against the ap (e.g. because | |
1829 | * this was the state before a hw restart), so we | |
1830 | * explicitly send a null packet in order to make sure | |
1831 | * it'll sync against the ap (and get out of psm). | |
1832 | */ | |
1833 | if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
1834 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1835 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
1836 | continue; | |
20f544ee JB |
1837 | if (!sdata->u.mgd.associated) |
1838 | continue; | |
6e1b1b24 EP |
1839 | |
1840 | ieee80211_send_nullfunc(local, sdata, 0); | |
1841 | } | |
1842 | } | |
1843 | ||
2e8d397e AN |
1844 | /* APs are now beaconing, add back stations */ |
1845 | mutex_lock(&local->sta_mtx); | |
1846 | list_for_each_entry(sta, &local->sta_list, list) { | |
1847 | enum ieee80211_sta_state state; | |
1848 | ||
1849 | if (!sta->uploaded) | |
1850 | continue; | |
1851 | ||
1852 | if (sta->sdata->vif.type != NL80211_IFTYPE_AP) | |
1853 | continue; | |
1854 | ||
1855 | for (state = IEEE80211_STA_NOTEXIST; | |
1856 | state < sta->sta_state; state++) | |
1857 | WARN_ON(drv_sta_state(local, sta->sdata, sta, state, | |
1858 | state + 1)); | |
1859 | } | |
1860 | mutex_unlock(&local->sta_mtx); | |
1861 | ||
7b21aea0 ES |
1862 | /* add back keys */ |
1863 | list_for_each_entry(sdata, &local->interfaces, list) | |
1864 | if (ieee80211_sdata_running(sdata)) | |
1865 | ieee80211_enable_keys(sdata); | |
1866 | ||
c6209488 | 1867 | wake_up: |
04800ada AN |
1868 | local->in_reconfig = false; |
1869 | barrier(); | |
1870 | ||
3c3e21e7 JB |
1871 | if (local->monitors == local->open_count && local->monitors > 0) |
1872 | ieee80211_add_virtual_monitor(local); | |
1873 | ||
2a419056 JB |
1874 | /* |
1875 | * Clear the WLAN_STA_BLOCK_BA flag so new aggregation | |
1876 | * sessions can be established after a resume. | |
1877 | * | |
1878 | * Also tear down aggregation sessions since reconfiguring | |
1879 | * them in a hardware restart scenario is not easily done | |
1880 | * right now, and the hardware will have lost information | |
1881 | * about the sessions, but we and the AP still think they | |
1882 | * are active. This is really a workaround though. | |
1883 | */ | |
74e2bd1f | 1884 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
2a419056 JB |
1885 | mutex_lock(&local->sta_mtx); |
1886 | ||
1887 | list_for_each_entry(sta, &local->sta_list, list) { | |
c82c4a80 JB |
1888 | ieee80211_sta_tear_down_BA_sessions( |
1889 | sta, AGG_STOP_LOCAL_REQUEST); | |
c2c98fde | 1890 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
74e2bd1f | 1891 | } |
2a419056 JB |
1892 | |
1893 | mutex_unlock(&local->sta_mtx); | |
74e2bd1f | 1894 | } |
74e2bd1f | 1895 | |
445ea4e8 | 1896 | ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
1897 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
1898 | false); | |
f2753ddb | 1899 | |
32769814 AN |
1900 | /* |
1901 | * Reconfigure sched scan if it was interrupted by FW restart or | |
1902 | * suspend. | |
1903 | */ | |
1904 | mutex_lock(&local->mtx); | |
1905 | sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, | |
1906 | lockdep_is_held(&local->mtx)); | |
1907 | if (sched_scan_sdata && local->sched_scan_req) | |
1908 | /* | |
1909 | * Sched scan stopped, but we don't want to report it. Instead, | |
1910 | * we're trying to reschedule. | |
1911 | */ | |
1912 | if (__ieee80211_request_sched_scan_start(sched_scan_sdata, | |
1913 | local->sched_scan_req)) | |
1914 | sched_scan_stopped = true; | |
1915 | mutex_unlock(&local->mtx); | |
1916 | ||
1917 | if (sched_scan_stopped) | |
e669ba2d | 1918 | cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); |
32769814 | 1919 | |
5bb644a0 JB |
1920 | /* |
1921 | * If this is for hw restart things are still running. | |
1922 | * We may want to change that later, however. | |
1923 | */ | |
8f21b0ad | 1924 | if (!local->suspended || reconfig_due_to_wowlan) |
9214ad7f | 1925 | drv_restart_complete(local); |
8f21b0ad JB |
1926 | |
1927 | if (!local->suspended) | |
5bb644a0 JB |
1928 | return 0; |
1929 | ||
1930 | #ifdef CONFIG_PM | |
ceb99fe0 | 1931 | /* first set suspended false, then resuming */ |
5bb644a0 | 1932 | local->suspended = false; |
ceb99fe0 JB |
1933 | mb(); |
1934 | local->resuming = false; | |
5bb644a0 | 1935 | |
b8360ab8 JB |
1936 | list_for_each_entry(sdata, &local->interfaces, list) { |
1937 | if (!ieee80211_sdata_running(sdata)) | |
1938 | continue; | |
1939 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1940 | ieee80211_sta_restart(sdata); | |
1941 | } | |
1942 | ||
26d59535 | 1943 | mod_timer(&local->sta_cleanup, jiffies + 1); |
5bb644a0 JB |
1944 | #else |
1945 | WARN_ON(1); | |
1946 | #endif | |
d43c6b6e | 1947 | |
f2753ddb JB |
1948 | return 0; |
1949 | } | |
42935eca | 1950 | |
95acac61 JB |
1951 | void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
1952 | { | |
1953 | struct ieee80211_sub_if_data *sdata; | |
1954 | struct ieee80211_local *local; | |
1955 | struct ieee80211_key *key; | |
1956 | ||
1957 | if (WARN_ON(!vif)) | |
1958 | return; | |
1959 | ||
1960 | sdata = vif_to_sdata(vif); | |
1961 | local = sdata->local; | |
1962 | ||
1963 | if (WARN_ON(!local->resuming)) | |
1964 | return; | |
1965 | ||
1966 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) | |
1967 | return; | |
1968 | ||
1969 | sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; | |
1970 | ||
1971 | mutex_lock(&local->key_mtx); | |
1972 | list_for_each_entry(key, &sdata->key_list, list) | |
1973 | key->flags |= KEY_FLAG_TAINTED; | |
1974 | mutex_unlock(&local->key_mtx); | |
1975 | } | |
1976 | EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); | |
1977 | ||
04ecd257 | 1978 | void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) |
0f78231b | 1979 | { |
04ecd257 JB |
1980 | struct ieee80211_local *local = sdata->local; |
1981 | struct ieee80211_chanctx_conf *chanctx_conf; | |
1982 | struct ieee80211_chanctx *chanctx; | |
025e6be2 | 1983 | |
04ecd257 | 1984 | mutex_lock(&local->chanctx_mtx); |
0f78231b | 1985 | |
04ecd257 JB |
1986 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1987 | lockdep_is_held(&local->chanctx_mtx)); | |
0f78231b | 1988 | |
04ecd257 | 1989 | if (WARN_ON_ONCE(!chanctx_conf)) |
5d8e4237 | 1990 | goto unlock; |
0f78231b | 1991 | |
04ecd257 JB |
1992 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
1993 | ieee80211_recalc_smps_chanctx(local, chanctx); | |
5d8e4237 | 1994 | unlock: |
04ecd257 | 1995 | mutex_unlock(&local->chanctx_mtx); |
0f78231b | 1996 | } |
8e664fb3 | 1997 | |
21f659bf EP |
1998 | void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) |
1999 | { | |
2000 | struct ieee80211_local *local = sdata->local; | |
2001 | struct ieee80211_chanctx_conf *chanctx_conf; | |
2002 | struct ieee80211_chanctx *chanctx; | |
2003 | ||
2004 | mutex_lock(&local->chanctx_mtx); | |
2005 | ||
2006 | chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, | |
2007 | lockdep_is_held(&local->chanctx_mtx)); | |
2008 | ||
2009 | if (WARN_ON_ONCE(!chanctx_conf)) | |
2010 | goto unlock; | |
2011 | ||
2012 | chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); | |
2013 | ieee80211_recalc_chanctx_min_def(local, chanctx); | |
2014 | unlock: | |
2015 | mutex_unlock(&local->chanctx_mtx); | |
2016 | } | |
2017 | ||
8e664fb3 JB |
2018 | static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) |
2019 | { | |
2020 | int i; | |
2021 | ||
2022 | for (i = 0; i < n_ids; i++) | |
2023 | if (ids[i] == id) | |
2024 | return true; | |
2025 | return false; | |
2026 | } | |
2027 | ||
2028 | /** | |
2029 | * ieee80211_ie_split - split an IE buffer according to ordering | |
2030 | * | |
2031 | * @ies: the IE buffer | |
2032 | * @ielen: the length of the IE buffer | |
2033 | * @ids: an array with element IDs that are allowed before | |
2034 | * the split | |
2035 | * @n_ids: the size of the element ID array | |
2036 | * @offset: offset where to start splitting in the buffer | |
2037 | * | |
2038 | * This function splits an IE buffer by updating the @offset | |
2039 | * variable to point to the location where the buffer should be | |
2040 | * split. | |
2041 | * | |
2042 | * It assumes that the given IE buffer is well-formed, this | |
2043 | * has to be guaranteed by the caller! | |
2044 | * | |
2045 | * It also assumes that the IEs in the buffer are ordered | |
2046 | * correctly, if not the result of using this function will not | |
2047 | * be ordered correctly either, i.e. it does no reordering. | |
2048 | * | |
2049 | * The function returns the offset where the next part of the | |
2050 | * buffer starts, which may be @ielen if the entire (remainder) | |
2051 | * of the buffer should be used. | |
2052 | */ | |
2053 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
2054 | const u8 *ids, int n_ids, size_t offset) | |
2055 | { | |
2056 | size_t pos = offset; | |
2057 | ||
2058 | while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) | |
2059 | pos += 2 + ies[pos + 1]; | |
2060 | ||
2061 | return pos; | |
2062 | } | |
2063 | ||
2064 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) | |
2065 | { | |
2066 | size_t pos = offset; | |
2067 | ||
2068 | while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) | |
2069 | pos += 2 + ies[pos + 1]; | |
2070 | ||
2071 | return pos; | |
2072 | } | |
615f7b9b MV |
2073 | |
2074 | static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, | |
2075 | int rssi_min_thold, | |
2076 | int rssi_max_thold) | |
2077 | { | |
2078 | trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); | |
2079 | ||
2080 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2081 | return; | |
2082 | ||
2083 | /* | |
2084 | * Scale up threshold values before storing it, as the RSSI averaging | |
2085 | * algorithm uses a scaled up value as well. Change this scaling | |
2086 | * factor if the RSSI averaging algorithm changes. | |
2087 | */ | |
2088 | sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; | |
2089 | sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; | |
2090 | } | |
2091 | ||
2092 | void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, | |
2093 | int rssi_min_thold, | |
2094 | int rssi_max_thold) | |
2095 | { | |
2096 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2097 | ||
2098 | WARN_ON(rssi_min_thold == rssi_max_thold || | |
2099 | rssi_min_thold > rssi_max_thold); | |
2100 | ||
2101 | _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, | |
2102 | rssi_max_thold); | |
2103 | } | |
2104 | EXPORT_SYMBOL(ieee80211_enable_rssi_reports); | |
2105 | ||
2106 | void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) | |
2107 | { | |
2108 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2109 | ||
2110 | _ieee80211_enable_rssi_reports(sdata, 0, 0); | |
2111 | } | |
2112 | EXPORT_SYMBOL(ieee80211_disable_rssi_reports); | |
768db343 | 2113 | |
ef96a842 | 2114 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
42e7aa77 AS |
2115 | u16 cap) |
2116 | { | |
2117 | __le16 tmp; | |
2118 | ||
2119 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
2120 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
2121 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
2122 | ||
2123 | /* capability flags */ | |
2124 | tmp = cpu_to_le16(cap); | |
2125 | memcpy(pos, &tmp, sizeof(u16)); | |
2126 | pos += sizeof(u16); | |
2127 | ||
2128 | /* AMPDU parameters */ | |
ef96a842 BG |
2129 | *pos++ = ht_cap->ampdu_factor | |
2130 | (ht_cap->ampdu_density << | |
42e7aa77 AS |
2131 | IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
2132 | ||
2133 | /* MCS set */ | |
ef96a842 BG |
2134 | memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
2135 | pos += sizeof(ht_cap->mcs); | |
42e7aa77 AS |
2136 | |
2137 | /* extended capabilities */ | |
2138 | pos += sizeof(__le16); | |
2139 | ||
2140 | /* BF capabilities */ | |
2141 | pos += sizeof(__le32); | |
2142 | ||
2143 | /* antenna selection */ | |
2144 | pos += sizeof(u8); | |
2145 | ||
2146 | return pos; | |
2147 | } | |
2148 | ||
ba0afa2f | 2149 | u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
cc3983d8 | 2150 | u32 cap) |
ba0afa2f MP |
2151 | { |
2152 | __le32 tmp; | |
2153 | ||
2154 | *pos++ = WLAN_EID_VHT_CAPABILITY; | |
d4950281 MP |
2155 | *pos++ = sizeof(struct ieee80211_vht_cap); |
2156 | memset(pos, 0, sizeof(struct ieee80211_vht_cap)); | |
ba0afa2f MP |
2157 | |
2158 | /* capability flags */ | |
2159 | tmp = cpu_to_le32(cap); | |
2160 | memcpy(pos, &tmp, sizeof(u32)); | |
2161 | pos += sizeof(u32); | |
2162 | ||
2163 | /* VHT MCS set */ | |
2164 | memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); | |
2165 | pos += sizeof(vht_cap->vht_mcs); | |
2166 | ||
2167 | return pos; | |
2168 | } | |
2169 | ||
074d46d1 | 2170 | u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
4bf88530 | 2171 | const struct cfg80211_chan_def *chandef, |
431e3154 | 2172 | u16 prot_mode) |
42e7aa77 | 2173 | { |
074d46d1 | 2174 | struct ieee80211_ht_operation *ht_oper; |
42e7aa77 | 2175 | /* Build HT Information */ |
074d46d1 JB |
2176 | *pos++ = WLAN_EID_HT_OPERATION; |
2177 | *pos++ = sizeof(struct ieee80211_ht_operation); | |
2178 | ht_oper = (struct ieee80211_ht_operation *)pos; | |
4bf88530 JB |
2179 | ht_oper->primary_chan = ieee80211_frequency_to_channel( |
2180 | chandef->chan->center_freq); | |
2181 | switch (chandef->width) { | |
2182 | case NL80211_CHAN_WIDTH_160: | |
2183 | case NL80211_CHAN_WIDTH_80P80: | |
2184 | case NL80211_CHAN_WIDTH_80: | |
2185 | case NL80211_CHAN_WIDTH_40: | |
2186 | if (chandef->center_freq1 > chandef->chan->center_freq) | |
2187 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2188 | else | |
2189 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
42e7aa77 | 2190 | break; |
42e7aa77 | 2191 | default: |
074d46d1 | 2192 | ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
42e7aa77 AS |
2193 | break; |
2194 | } | |
aee286c2 | 2195 | if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
4bf88530 JB |
2196 | chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
2197 | chandef->width != NL80211_CHAN_WIDTH_20) | |
074d46d1 | 2198 | ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
ff3cc5f4 | 2199 | |
431e3154 | 2200 | ht_oper->operation_mode = cpu_to_le16(prot_mode); |
074d46d1 | 2201 | ht_oper->stbc_param = 0x0000; |
42e7aa77 AS |
2202 | |
2203 | /* It seems that Basic MCS set and Supported MCS set | |
2204 | are identical for the first 10 bytes */ | |
074d46d1 JB |
2205 | memset(&ht_oper->basic_set, 0, 16); |
2206 | memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); | |
42e7aa77 | 2207 | |
074d46d1 | 2208 | return pos + sizeof(struct ieee80211_ht_operation); |
42e7aa77 AS |
2209 | } |
2210 | ||
4bf88530 | 2211 | void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, |
4a3cb702 | 2212 | const struct ieee80211_ht_operation *ht_oper, |
4bf88530 | 2213 | struct cfg80211_chan_def *chandef) |
42e7aa77 AS |
2214 | { |
2215 | enum nl80211_channel_type channel_type; | |
2216 | ||
4bf88530 JB |
2217 | if (!ht_oper) { |
2218 | cfg80211_chandef_create(chandef, control_chan, | |
2219 | NL80211_CHAN_NO_HT); | |
2220 | return; | |
2221 | } | |
42e7aa77 | 2222 | |
074d46d1 | 2223 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
42e7aa77 AS |
2224 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
2225 | channel_type = NL80211_CHAN_HT20; | |
2226 | break; | |
2227 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
2228 | channel_type = NL80211_CHAN_HT40PLUS; | |
2229 | break; | |
2230 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
2231 | channel_type = NL80211_CHAN_HT40MINUS; | |
2232 | break; | |
2233 | default: | |
2234 | channel_type = NL80211_CHAN_NO_HT; | |
2235 | } | |
2236 | ||
4bf88530 | 2237 | cfg80211_chandef_create(chandef, control_chan, channel_type); |
42e7aa77 AS |
2238 | } |
2239 | ||
2103dec1 SW |
2240 | int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, |
2241 | const struct ieee80211_supported_band *sband, | |
2242 | const u8 *srates, int srates_len, u32 *rates) | |
2243 | { | |
2244 | u32 rate_flags = ieee80211_chandef_rate_flags(chandef); | |
2245 | int shift = ieee80211_chandef_get_shift(chandef); | |
2246 | struct ieee80211_rate *br; | |
2247 | int brate, rate, i, j, count = 0; | |
2248 | ||
2249 | *rates = 0; | |
2250 | ||
2251 | for (i = 0; i < srates_len; i++) { | |
2252 | rate = srates[i] & 0x7f; | |
2253 | ||
2254 | for (j = 0; j < sband->n_bitrates; j++) { | |
2255 | br = &sband->bitrates[j]; | |
2256 | if ((rate_flags & br->flags) != rate_flags) | |
2257 | continue; | |
2258 | ||
2259 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2260 | if (brate == rate) { | |
2261 | *rates |= BIT(j); | |
2262 | count++; | |
2263 | break; | |
2264 | } | |
2265 | } | |
2266 | } | |
2267 | return count; | |
2268 | } | |
2269 | ||
fc8a7321 | 2270 | int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2271 | struct sk_buff *skb, bool need_basic, |
2272 | enum ieee80211_band band) | |
768db343 | 2273 | { |
768db343 AN |
2274 | struct ieee80211_local *local = sdata->local; |
2275 | struct ieee80211_supported_band *sband; | |
2103dec1 | 2276 | int rate, shift; |
768db343 | 2277 | u8 i, rates, *pos; |
fc8a7321 | 2278 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 | 2279 | u32 rate_flags; |
768db343 | 2280 | |
2103dec1 SW |
2281 | shift = ieee80211_vif_get_shift(&sdata->vif); |
2282 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
6b77863b | 2283 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2284 | rates = 0; |
2285 | for (i = 0; i < sband->n_bitrates; i++) { | |
2286 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2287 | continue; | |
2288 | rates++; | |
2289 | } | |
768db343 AN |
2290 | if (rates > 8) |
2291 | rates = 8; | |
2292 | ||
2293 | if (skb_tailroom(skb) < rates + 2) | |
2294 | return -ENOMEM; | |
2295 | ||
2296 | pos = skb_put(skb, rates + 2); | |
2297 | *pos++ = WLAN_EID_SUPP_RATES; | |
2298 | *pos++ = rates; | |
2299 | for (i = 0; i < rates; i++) { | |
657c3e0c | 2300 | u8 basic = 0; |
2103dec1 SW |
2301 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
2302 | continue; | |
2303 | ||
657c3e0c AN |
2304 | if (need_basic && basic_rates & BIT(i)) |
2305 | basic = 0x80; | |
768db343 | 2306 | rate = sband->bitrates[i].bitrate; |
2103dec1 SW |
2307 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2308 | 5 * (1 << shift)); | |
2309 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2310 | } |
2311 | ||
2312 | return 0; | |
2313 | } | |
2314 | ||
fc8a7321 | 2315 | int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
6b77863b JB |
2316 | struct sk_buff *skb, bool need_basic, |
2317 | enum ieee80211_band band) | |
768db343 | 2318 | { |
768db343 AN |
2319 | struct ieee80211_local *local = sdata->local; |
2320 | struct ieee80211_supported_band *sband; | |
cc63ec76 | 2321 | int rate, shift; |
768db343 | 2322 | u8 i, exrates, *pos; |
fc8a7321 | 2323 | u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
2103dec1 SW |
2324 | u32 rate_flags; |
2325 | ||
2326 | rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); | |
2327 | shift = ieee80211_vif_get_shift(&sdata->vif); | |
768db343 | 2328 | |
6b77863b | 2329 | sband = local->hw.wiphy->bands[band]; |
2103dec1 SW |
2330 | exrates = 0; |
2331 | for (i = 0; i < sband->n_bitrates; i++) { | |
2332 | if ((rate_flags & sband->bitrates[i].flags) != rate_flags) | |
2333 | continue; | |
2334 | exrates++; | |
2335 | } | |
2336 | ||
768db343 AN |
2337 | if (exrates > 8) |
2338 | exrates -= 8; | |
2339 | else | |
2340 | exrates = 0; | |
2341 | ||
2342 | if (skb_tailroom(skb) < exrates + 2) | |
2343 | return -ENOMEM; | |
2344 | ||
2345 | if (exrates) { | |
2346 | pos = skb_put(skb, exrates + 2); | |
2347 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2348 | *pos++ = exrates; | |
2349 | for (i = 8; i < sband->n_bitrates; i++) { | |
657c3e0c | 2350 | u8 basic = 0; |
2103dec1 SW |
2351 | if ((rate_flags & sband->bitrates[i].flags) |
2352 | != rate_flags) | |
2353 | continue; | |
657c3e0c AN |
2354 | if (need_basic && basic_rates & BIT(i)) |
2355 | basic = 0x80; | |
2103dec1 SW |
2356 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
2357 | 5 * (1 << shift)); | |
2358 | *pos++ = basic | (u8) rate; | |
768db343 AN |
2359 | } |
2360 | } | |
2361 | return 0; | |
2362 | } | |
1dae27f8 WYG |
2363 | |
2364 | int ieee80211_ave_rssi(struct ieee80211_vif *vif) | |
2365 | { | |
2366 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2367 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2368 | ||
be6bcabc WYG |
2369 | if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { |
2370 | /* non-managed type inferfaces */ | |
2371 | return 0; | |
2372 | } | |
3a7bba64 | 2373 | return ifmgd->ave_beacon_signal / 16; |
1dae27f8 | 2374 | } |
0d8a0a17 | 2375 | EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
04ecd257 JB |
2376 | |
2377 | u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) | |
2378 | { | |
2379 | if (!mcs) | |
2380 | return 1; | |
2381 | ||
2382 | /* TODO: consider rx_highest */ | |
2383 | ||
2384 | if (mcs->rx_mask[3]) | |
2385 | return 4; | |
2386 | if (mcs->rx_mask[2]) | |
2387 | return 3; | |
2388 | if (mcs->rx_mask[1]) | |
2389 | return 2; | |
2390 | return 1; | |
2391 | } | |
f4bda337 TP |
2392 | |
2393 | /** | |
2394 | * ieee80211_calculate_rx_timestamp - calculate timestamp in frame | |
2395 | * @local: mac80211 hw info struct | |
2396 | * @status: RX status | |
2397 | * @mpdu_len: total MPDU length (including FCS) | |
2398 | * @mpdu_offset: offset into MPDU to calculate timestamp at | |
2399 | * | |
2400 | * This function calculates the RX timestamp at the given MPDU offset, taking | |
2401 | * into account what the RX timestamp was. An offset of 0 will just normalize | |
2402 | * the timestamp to TSF at beginning of MPDU reception. | |
2403 | */ | |
2404 | u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, | |
2405 | struct ieee80211_rx_status *status, | |
2406 | unsigned int mpdu_len, | |
2407 | unsigned int mpdu_offset) | |
2408 | { | |
2409 | u64 ts = status->mactime; | |
2410 | struct rate_info ri; | |
2411 | u16 rate; | |
2412 | ||
2413 | if (WARN_ON(!ieee80211_have_rx_timestamp(status))) | |
2414 | return 0; | |
2415 | ||
2416 | memset(&ri, 0, sizeof(ri)); | |
2417 | ||
2418 | /* Fill cfg80211 rate info */ | |
2419 | if (status->flag & RX_FLAG_HT) { | |
2420 | ri.mcs = status->rate_idx; | |
2421 | ri.flags |= RATE_INFO_FLAGS_MCS; | |
2422 | if (status->flag & RX_FLAG_40MHZ) | |
2423 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
2424 | if (status->flag & RX_FLAG_SHORT_GI) | |
2425 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
5614618e JB |
2426 | } else if (status->flag & RX_FLAG_VHT) { |
2427 | ri.flags |= RATE_INFO_FLAGS_VHT_MCS; | |
2428 | ri.mcs = status->rate_idx; | |
2429 | ri.nss = status->vht_nss; | |
2430 | if (status->flag & RX_FLAG_40MHZ) | |
2431 | ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; | |
1b8d242a | 2432 | if (status->vht_flag & RX_VHT_FLAG_80MHZ) |
5614618e | 2433 | ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; |
1b8d242a | 2434 | if (status->vht_flag & RX_VHT_FLAG_80P80MHZ) |
5614618e | 2435 | ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; |
1b8d242a | 2436 | if (status->vht_flag & RX_VHT_FLAG_160MHZ) |
5614618e JB |
2437 | ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; |
2438 | if (status->flag & RX_FLAG_SHORT_GI) | |
2439 | ri.flags |= RATE_INFO_FLAGS_SHORT_GI; | |
f4bda337 TP |
2440 | } else { |
2441 | struct ieee80211_supported_band *sband; | |
2103dec1 SW |
2442 | int shift = 0; |
2443 | int bitrate; | |
2444 | ||
2445 | if (status->flag & RX_FLAG_10MHZ) | |
2446 | shift = 1; | |
2447 | if (status->flag & RX_FLAG_5MHZ) | |
2448 | shift = 2; | |
f4bda337 TP |
2449 | |
2450 | sband = local->hw.wiphy->bands[status->band]; | |
2103dec1 SW |
2451 | bitrate = sband->bitrates[status->rate_idx].bitrate; |
2452 | ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); | |
f4bda337 TP |
2453 | } |
2454 | ||
2455 | rate = cfg80211_calculate_bitrate(&ri); | |
d86aa4f8 JB |
2456 | if (WARN_ONCE(!rate, |
2457 | "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n", | |
2458 | status->flag, status->rate_idx, status->vht_nss)) | |
2459 | return 0; | |
f4bda337 TP |
2460 | |
2461 | /* rewind from end of MPDU */ | |
2462 | if (status->flag & RX_FLAG_MACTIME_END) | |
2463 | ts -= mpdu_len * 8 * 10 / rate; | |
2464 | ||
2465 | ts += mpdu_offset * 8 * 10 / rate; | |
2466 | ||
2467 | return ts; | |
2468 | } | |
164eb02d SW |
2469 | |
2470 | void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) | |
2471 | { | |
2472 | struct ieee80211_sub_if_data *sdata; | |
d2859df5 | 2473 | struct cfg80211_chan_def chandef; |
164eb02d | 2474 | |
34a3740d | 2475 | mutex_lock(&local->mtx); |
164eb02d SW |
2476 | mutex_lock(&local->iflist_mtx); |
2477 | list_for_each_entry(sdata, &local->interfaces, list) { | |
34a3740d JB |
2478 | /* it might be waiting for the local->mtx, but then |
2479 | * by the time it gets it, sdata->wdev.cac_started | |
2480 | * will no longer be true | |
2481 | */ | |
2482 | cancel_delayed_work(&sdata->dfs_cac_timer_work); | |
164eb02d SW |
2483 | |
2484 | if (sdata->wdev.cac_started) { | |
d2859df5 | 2485 | chandef = sdata->vif.bss_conf.chandef; |
164eb02d SW |
2486 | ieee80211_vif_release_channel(sdata); |
2487 | cfg80211_cac_event(sdata->dev, | |
d2859df5 | 2488 | &chandef, |
164eb02d SW |
2489 | NL80211_RADAR_CAC_ABORTED, |
2490 | GFP_KERNEL); | |
2491 | } | |
2492 | } | |
2493 | mutex_unlock(&local->iflist_mtx); | |
34a3740d | 2494 | mutex_unlock(&local->mtx); |
164eb02d SW |
2495 | } |
2496 | ||
2497 | void ieee80211_dfs_radar_detected_work(struct work_struct *work) | |
2498 | { | |
2499 | struct ieee80211_local *local = | |
2500 | container_of(work, struct ieee80211_local, radar_detected_work); | |
84a3d1c9 | 2501 | struct cfg80211_chan_def chandef = local->hw.conf.chandef; |
164eb02d SW |
2502 | |
2503 | ieee80211_dfs_cac_cancel(local); | |
2504 | ||
2505 | if (local->use_chanctx) | |
2506 | /* currently not handled */ | |
2507 | WARN_ON(1); | |
84a3d1c9 | 2508 | else |
164eb02d | 2509 | cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
164eb02d SW |
2510 | } |
2511 | ||
2512 | void ieee80211_radar_detected(struct ieee80211_hw *hw) | |
2513 | { | |
2514 | struct ieee80211_local *local = hw_to_local(hw); | |
2515 | ||
2516 | trace_api_radar_detected(local); | |
2517 | ||
2518 | ieee80211_queue_work(hw, &local->radar_detected_work); | |
2519 | } | |
2520 | EXPORT_SYMBOL(ieee80211_radar_detected); | |
e6b7cde4 SW |
2521 | |
2522 | u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) | |
2523 | { | |
2524 | u32 ret; | |
2525 | int tmp; | |
2526 | ||
2527 | switch (c->width) { | |
2528 | case NL80211_CHAN_WIDTH_20: | |
2529 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2530 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2531 | break; | |
2532 | case NL80211_CHAN_WIDTH_40: | |
2533 | c->width = NL80211_CHAN_WIDTH_20; | |
2534 | c->center_freq1 = c->chan->center_freq; | |
2535 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
2536 | IEEE80211_STA_DISABLE_VHT; | |
2537 | break; | |
2538 | case NL80211_CHAN_WIDTH_80: | |
2539 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
2540 | /* n_P40 */ | |
2541 | tmp /= 2; | |
2542 | /* freq_P40 */ | |
2543 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
2544 | c->width = NL80211_CHAN_WIDTH_40; | |
2545 | ret = IEEE80211_STA_DISABLE_VHT; | |
2546 | break; | |
2547 | case NL80211_CHAN_WIDTH_80P80: | |
2548 | c->center_freq2 = 0; | |
2549 | c->width = NL80211_CHAN_WIDTH_80; | |
2550 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2551 | IEEE80211_STA_DISABLE_160MHZ; | |
2552 | break; | |
2553 | case NL80211_CHAN_WIDTH_160: | |
2554 | /* n_P20 */ | |
2555 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
2556 | /* n_P80 */ | |
2557 | tmp /= 4; | |
2558 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
2559 | c->width = NL80211_CHAN_WIDTH_80; | |
2560 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
2561 | IEEE80211_STA_DISABLE_160MHZ; | |
2562 | break; | |
2563 | default: | |
2564 | case NL80211_CHAN_WIDTH_20_NOHT: | |
2565 | WARN_ON_ONCE(1); | |
2566 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
2567 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2568 | break; | |
2569 | case NL80211_CHAN_WIDTH_5: | |
2570 | case NL80211_CHAN_WIDTH_10: | |
2571 | WARN_ON_ONCE(1); | |
2572 | /* keep c->width */ | |
2573 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
2574 | break; | |
2575 | } | |
2576 | ||
2577 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
2578 | ||
2579 | return ret; | |
2580 | } | |
687da132 EG |
2581 | |
2582 | /* | |
2583 | * Returns true if smps_mode_new is strictly more restrictive than | |
2584 | * smps_mode_old. | |
2585 | */ | |
2586 | bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, | |
2587 | enum ieee80211_smps_mode smps_mode_new) | |
2588 | { | |
2589 | if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || | |
2590 | smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) | |
2591 | return false; | |
2592 | ||
2593 | switch (smps_mode_old) { | |
2594 | case IEEE80211_SMPS_STATIC: | |
2595 | return false; | |
2596 | case IEEE80211_SMPS_DYNAMIC: | |
2597 | return smps_mode_new == IEEE80211_SMPS_STATIC; | |
2598 | case IEEE80211_SMPS_OFF: | |
2599 | return smps_mode_new != IEEE80211_SMPS_OFF; | |
2600 | default: | |
2601 | WARN_ON(1); | |
2602 | } | |
2603 | ||
2604 | return false; | |
2605 | } | |
c6da674a CYY |
2606 | |
2607 | int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, | |
2608 | struct cfg80211_csa_settings *csa_settings) | |
2609 | { | |
2610 | struct sk_buff *skb; | |
2611 | struct ieee80211_mgmt *mgmt; | |
2612 | struct ieee80211_local *local = sdata->local; | |
2613 | int freq; | |
2614 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + | |
2615 | sizeof(mgmt->u.action.u.chan_switch); | |
2616 | u8 *pos; | |
2617 | ||
2618 | if (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
2619 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) | |
2620 | return -EOPNOTSUPP; | |
2621 | ||
2622 | skb = dev_alloc_skb(local->tx_headroom + hdr_len + | |
2623 | 5 + /* channel switch announcement element */ | |
2624 | 3 + /* secondary channel offset element */ | |
2625 | 8); /* mesh channel switch parameters element */ | |
2626 | if (!skb) | |
2627 | return -ENOMEM; | |
2628 | ||
2629 | skb_reserve(skb, local->tx_headroom); | |
2630 | mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); | |
2631 | memset(mgmt, 0, hdr_len); | |
2632 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2633 | IEEE80211_STYPE_ACTION); | |
2634 | ||
2635 | eth_broadcast_addr(mgmt->da); | |
2636 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
2637 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2638 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); | |
2639 | } else { | |
2640 | struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; | |
2641 | memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); | |
2642 | } | |
2643 | mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
2644 | mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; | |
2645 | pos = skb_put(skb, 5); | |
2646 | *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ | |
2647 | *pos++ = 3; /* IE length */ | |
2648 | *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ | |
2649 | freq = csa_settings->chandef.chan->center_freq; | |
2650 | *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ | |
2651 | *pos++ = csa_settings->count; /* count */ | |
2652 | ||
2653 | if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { | |
2654 | enum nl80211_channel_type ch_type; | |
2655 | ||
2656 | skb_put(skb, 3); | |
2657 | *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ | |
2658 | *pos++ = 1; /* IE length */ | |
2659 | ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); | |
2660 | if (ch_type == NL80211_CHAN_HT40PLUS) | |
2661 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
2662 | else | |
2663 | *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
2664 | } | |
2665 | ||
2666 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2667 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
c6da674a CYY |
2668 | |
2669 | skb_put(skb, 8); | |
2670 | *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ | |
2671 | *pos++ = 6; /* IE length */ | |
2672 | *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ | |
2673 | *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ | |
2674 | *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; | |
2675 | *pos++ |= csa_settings->block_tx ? | |
2676 | WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; | |
2677 | put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ | |
2678 | pos += 2; | |
ca91dc97 | 2679 | put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
c6da674a | 2680 | pos += 2; |
c6da674a CYY |
2681 | } |
2682 | ||
2683 | ieee80211_tx_skb(sdata, skb); | |
2684 | return 0; | |
2685 | } | |
2475b1cc MS |
2686 | |
2687 | bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) | |
2688 | { | |
2689 | return !(cs == NULL || cs->cipher == 0 || | |
2690 | cs->hdr_len < cs->pn_len + cs->pn_off || | |
2691 | cs->hdr_len <= cs->key_idx_off || | |
2692 | cs->key_idx_shift > 7 || | |
2693 | cs->key_idx_mask == 0); | |
2694 | } | |
2695 | ||
2696 | bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) | |
2697 | { | |
2698 | int i; | |
2699 | ||
2700 | /* Ensure we have enough iftype bitmap space for all iftype values */ | |
2701 | WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); | |
2702 | ||
2703 | for (i = 0; i < n; i++) | |
2704 | if (!ieee80211_cs_valid(&cs[i])) | |
2705 | return false; | |
2706 | ||
2707 | return true; | |
2708 | } | |
2709 | ||
2710 | const struct ieee80211_cipher_scheme * | |
2711 | ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, | |
2712 | enum nl80211_iftype iftype) | |
2713 | { | |
2714 | const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; | |
2715 | int n = local->hw.n_cipher_schemes; | |
2716 | int i; | |
2717 | const struct ieee80211_cipher_scheme *cs = NULL; | |
2718 | ||
2719 | for (i = 0; i < n; i++) { | |
2720 | if (l[i].cipher == cipher) { | |
2721 | cs = &l[i]; | |
2722 | break; | |
2723 | } | |
2724 | } | |
2725 | ||
2726 | if (!cs || !(cs->iftype & BIT(iftype))) | |
2727 | return NULL; | |
2728 | ||
2729 | return cs; | |
2730 | } | |
2731 | ||
2732 | int ieee80211_cs_headroom(struct ieee80211_local *local, | |
2733 | struct cfg80211_crypto_settings *crypto, | |
2734 | enum nl80211_iftype iftype) | |
2735 | { | |
2736 | const struct ieee80211_cipher_scheme *cs; | |
2737 | int headroom = IEEE80211_ENCRYPT_HEADROOM; | |
2738 | int i; | |
2739 | ||
2740 | for (i = 0; i < crypto->n_ciphers_pairwise; i++) { | |
2741 | cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], | |
2742 | iftype); | |
2743 | ||
2744 | if (cs && headroom < cs->hdr_len) | |
2745 | headroom = cs->hdr_len; | |
2746 | } | |
2747 | ||
2748 | cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); | |
2749 | if (cs && headroom < cs->hdr_len) | |
2750 | headroom = cs->hdr_len; | |
2751 | ||
2752 | return headroom; | |
2753 | } | |
a7022e65 FF |
2754 | |
2755 | static bool | |
2756 | ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) | |
2757 | { | |
2758 | s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); | |
2759 | int skip; | |
2760 | ||
2761 | if (end > 0) | |
2762 | return false; | |
2763 | ||
2764 | /* End time is in the past, check for repetitions */ | |
2765 | skip = DIV_ROUND_UP(-end, data->desc[i].interval); | |
2766 | if (data->count[i] < 255) { | |
2767 | if (data->count[i] <= skip) { | |
2768 | data->count[i] = 0; | |
2769 | return false; | |
2770 | } | |
2771 | ||
2772 | data->count[i] -= skip; | |
2773 | } | |
2774 | ||
2775 | data->desc[i].start += skip * data->desc[i].interval; | |
2776 | ||
2777 | return true; | |
2778 | } | |
2779 | ||
2780 | static bool | |
2781 | ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, | |
2782 | s32 *offset) | |
2783 | { | |
2784 | bool ret = false; | |
2785 | int i; | |
2786 | ||
2787 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2788 | s32 cur; | |
2789 | ||
2790 | if (!data->count[i]) | |
2791 | continue; | |
2792 | ||
2793 | if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) | |
2794 | ret = true; | |
2795 | ||
2796 | cur = data->desc[i].start - tsf; | |
2797 | if (cur > *offset) | |
2798 | continue; | |
2799 | ||
2800 | cur = data->desc[i].start + data->desc[i].duration - tsf; | |
2801 | if (cur > *offset) | |
2802 | *offset = cur; | |
2803 | } | |
2804 | ||
2805 | return ret; | |
2806 | } | |
2807 | ||
2808 | static u32 | |
2809 | ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) | |
2810 | { | |
2811 | s32 offset = 0; | |
2812 | int tries = 0; | |
2813 | /* | |
2814 | * arbitrary limit, used to avoid infinite loops when combined NoA | |
2815 | * descriptors cover the full time period. | |
2816 | */ | |
2817 | int max_tries = 5; | |
2818 | ||
2819 | ieee80211_extend_absent_time(data, tsf, &offset); | |
2820 | do { | |
2821 | if (!ieee80211_extend_absent_time(data, tsf, &offset)) | |
2822 | break; | |
2823 | ||
2824 | tries++; | |
2825 | } while (tries < max_tries); | |
2826 | ||
2827 | return offset; | |
2828 | } | |
2829 | ||
2830 | void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) | |
2831 | { | |
2832 | u32 next_offset = BIT(31) - 1; | |
2833 | int i; | |
2834 | ||
2835 | data->absent = 0; | |
2836 | data->has_next_tsf = false; | |
2837 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2838 | s32 start; | |
2839 | ||
2840 | if (!data->count[i]) | |
2841 | continue; | |
2842 | ||
2843 | ieee80211_extend_noa_desc(data, tsf, i); | |
2844 | start = data->desc[i].start - tsf; | |
2845 | if (start <= 0) | |
2846 | data->absent |= BIT(i); | |
2847 | ||
2848 | if (next_offset > start) | |
2849 | next_offset = start; | |
2850 | ||
2851 | data->has_next_tsf = true; | |
2852 | } | |
2853 | ||
2854 | if (data->absent) | |
2855 | next_offset = ieee80211_get_noa_absent_time(data, tsf); | |
2856 | ||
2857 | data->next_tsf = tsf + next_offset; | |
2858 | } | |
2859 | EXPORT_SYMBOL(ieee80211_update_p2p_noa); | |
2860 | ||
2861 | int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, | |
2862 | struct ieee80211_noa_data *data, u32 tsf) | |
2863 | { | |
2864 | int ret = 0; | |
2865 | int i; | |
2866 | ||
2867 | memset(data, 0, sizeof(*data)); | |
2868 | ||
2869 | for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { | |
2870 | const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; | |
2871 | ||
2872 | if (!desc->count || !desc->duration) | |
2873 | continue; | |
2874 | ||
2875 | data->count[i] = desc->count; | |
2876 | data->desc[i].start = le32_to_cpu(desc->start_time); | |
2877 | data->desc[i].duration = le32_to_cpu(desc->duration); | |
2878 | data->desc[i].interval = le32_to_cpu(desc->interval); | |
2879 | ||
2880 | if (data->count[i] > 1 && | |
2881 | data->desc[i].interval < data->desc[i].duration) | |
2882 | continue; | |
2883 | ||
2884 | ieee80211_extend_noa_desc(data, tsf, i); | |
2885 | ret++; | |
2886 | } | |
2887 | ||
2888 | if (ret) | |
2889 | ieee80211_update_p2p_noa(data, tsf); | |
2890 | ||
2891 | return ret; | |
2892 | } | |
2893 | EXPORT_SYMBOL(ieee80211_parse_p2p_noa); | |
057d5f4b TP |
2894 | |
2895 | void ieee80211_recalc_dtim(struct ieee80211_local *local, | |
2896 | struct ieee80211_sub_if_data *sdata) | |
2897 | { | |
2898 | u64 tsf = drv_get_tsf(local, sdata); | |
2899 | u64 dtim_count = 0; | |
2900 | u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; | |
2901 | u8 dtim_period = sdata->vif.bss_conf.dtim_period; | |
2902 | struct ps_data *ps; | |
2903 | u8 bcns_from_dtim; | |
2904 | ||
2905 | if (tsf == -1ULL || !beacon_int || !dtim_period) | |
2906 | return; | |
2907 | ||
2908 | if (sdata->vif.type == NL80211_IFTYPE_AP || | |
2909 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
2910 | if (!sdata->bss) | |
2911 | return; | |
2912 | ||
2913 | ps = &sdata->bss->ps; | |
2914 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2915 | ps = &sdata->u.mesh.ps; | |
2916 | } else { | |
2917 | return; | |
2918 | } | |
2919 | ||
2920 | /* | |
2921 | * actually finds last dtim_count, mac80211 will update in | |
2922 | * __beacon_add_tim(). | |
2923 | * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period | |
2924 | */ | |
2925 | do_div(tsf, beacon_int); | |
2926 | bcns_from_dtim = do_div(tsf, dtim_period); | |
2927 | /* just had a DTIM */ | |
2928 | if (!bcns_from_dtim) | |
2929 | dtim_count = 0; | |
2930 | else | |
2931 | dtim_count = dtim_period - bcns_from_dtim; | |
2932 | ||
2933 | ps->dtim_count = dtim_count; | |
2934 | } | |
73de86a3 LC |
2935 | |
2936 | int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, | |
2937 | const struct cfg80211_chan_def *chandef, | |
2938 | enum ieee80211_chanctx_mode chanmode, | |
2939 | u8 radar_detect) | |
2940 | { | |
2941 | struct ieee80211_local *local = sdata->local; | |
2942 | struct ieee80211_sub_if_data *sdata_iter; | |
2943 | enum nl80211_iftype iftype = sdata->wdev.iftype; | |
2944 | int num[NUM_NL80211_IFTYPES]; | |
2945 | struct ieee80211_chanctx *ctx; | |
b6a55015 | 2946 | int num_different_channels = 0; |
73de86a3 LC |
2947 | int total = 1; |
2948 | ||
2949 | lockdep_assert_held(&local->chanctx_mtx); | |
2950 | ||
2951 | if (WARN_ON(hweight32(radar_detect) > 1)) | |
2952 | return -EINVAL; | |
2953 | ||
b6a55015 LC |
2954 | if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
2955 | !chandef->chan)) | |
73de86a3 LC |
2956 | return -EINVAL; |
2957 | ||
b6a55015 LC |
2958 | if (chandef) |
2959 | num_different_channels = 1; | |
2960 | ||
73de86a3 LC |
2961 | if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) |
2962 | return -EINVAL; | |
2963 | ||
2964 | /* Always allow software iftypes */ | |
2965 | if (local->hw.wiphy->software_iftypes & BIT(iftype)) { | |
2966 | if (radar_detect) | |
2967 | return -EINVAL; | |
2968 | return 0; | |
2969 | } | |
2970 | ||
2971 | memset(num, 0, sizeof(num)); | |
2972 | ||
2973 | if (iftype != NL80211_IFTYPE_UNSPECIFIED) | |
2974 | num[iftype] = 1; | |
2975 | ||
2976 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
2977 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
2978 | continue; | |
73de86a3 LC |
2979 | if (ctx->conf.radar_enabled) |
2980 | radar_detect |= BIT(ctx->conf.def.width); | |
2981 | if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { | |
2982 | num_different_channels++; | |
2983 | continue; | |
2984 | } | |
b6a55015 | 2985 | if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
73de86a3 LC |
2986 | cfg80211_chandef_compatible(chandef, |
2987 | &ctx->conf.def)) | |
2988 | continue; | |
2989 | num_different_channels++; | |
2990 | } | |
2991 | ||
2992 | list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { | |
2993 | struct wireless_dev *wdev_iter; | |
2994 | ||
2995 | wdev_iter = &sdata_iter->wdev; | |
2996 | ||
2997 | if (sdata_iter == sdata || | |
2998 | rcu_access_pointer(sdata_iter->vif.chanctx_conf) == NULL || | |
2999 | local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) | |
3000 | continue; | |
3001 | ||
3002 | num[wdev_iter->iftype]++; | |
3003 | total++; | |
3004 | } | |
3005 | ||
3006 | if (total == 1 && !radar_detect) | |
3007 | return 0; | |
3008 | ||
3009 | return cfg80211_check_combinations(local->hw.wiphy, | |
3010 | num_different_channels, | |
3011 | radar_detect, num); | |
3012 | } | |
6fa001bc MK |
3013 | |
3014 | static void | |
3015 | ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, | |
3016 | void *data) | |
3017 | { | |
3018 | u32 *max_num_different_channels = data; | |
3019 | ||
3020 | *max_num_different_channels = max(*max_num_different_channels, | |
3021 | c->num_different_channels); | |
3022 | } | |
3023 | ||
3024 | int ieee80211_max_num_channels(struct ieee80211_local *local) | |
3025 | { | |
3026 | struct ieee80211_sub_if_data *sdata; | |
3027 | int num[NUM_NL80211_IFTYPES] = {}; | |
3028 | struct ieee80211_chanctx *ctx; | |
3029 | int num_different_channels = 0; | |
3030 | u8 radar_detect = 0; | |
3031 | u32 max_num_different_channels = 1; | |
3032 | int err; | |
3033 | ||
3034 | lockdep_assert_held(&local->chanctx_mtx); | |
3035 | ||
3036 | list_for_each_entry(ctx, &local->chanctx_list, list) { | |
5bcae31d MK |
3037 | if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
3038 | continue; | |
3039 | ||
6fa001bc MK |
3040 | num_different_channels++; |
3041 | ||
3042 | if (ctx->conf.radar_enabled) | |
3043 | radar_detect |= BIT(ctx->conf.def.width); | |
3044 | } | |
3045 | ||
3046 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3047 | num[sdata->wdev.iftype]++; | |
3048 | ||
3049 | err = cfg80211_iter_combinations(local->hw.wiphy, | |
3050 | num_different_channels, radar_detect, | |
3051 | num, ieee80211_iter_max_chans, | |
3052 | &max_num_different_channels); | |
3053 | if (err < 0) | |
3054 | return err; | |
3055 | ||
3056 | return max_num_different_channels; | |
3057 | } |