blob: dddfff7cf44fefdfb77ed7eeba87f10c2ebf7735 [file] [log] [blame]
Johannes Bergc2d15602007-07-27 15:43:23 +02001/*
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>
Johannes Bergd98ad832014-09-03 15:24:57 +03006 * Copyright 2013-2014 Intel Mobile Communications GmbH
Johannes Bergda6a4352017-04-26 12:14:59 +02007 * Copyright (C) 2015-2017 Intel Deutschland GmbH
Haim Dreyfusse552af02018-03-28 13:24:10 +03008 * Copyright (C) 2018 Intel Corporation
Johannes Bergc2d15602007-07-27 15:43:23 +02009 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * utilities for mac80211
15 */
16
17#include <net/mac80211.h>
18#include <linux/netdevice.h>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040019#include <linux/export.h>
Johannes Bergc2d15602007-07-27 15:43:23 +020020#include <linux/types.h>
21#include <linux/slab.h>
22#include <linux/skbuff.h>
23#include <linux/etherdevice.h>
24#include <linux/if_arp.h>
Johannes Bergc2d15602007-07-27 15:43:23 +020025#include <linux/bitmap.h>
Johannes Bergdd769862011-11-18 16:54:50 +010026#include <linux/crc32.h>
Eric W. Biederman881d9662007-09-17 11:56:21 -070027#include <net/net_namespace.h>
Johannes Bergc2d15602007-07-27 15:43:23 +020028#include <net/cfg80211.h>
Johannes Bergdabeb342007-11-09 01:57:29 +010029#include <net/rtnetlink.h>
Johannes Bergc2d15602007-07-27 15:43:23 +020030
31#include "ieee80211_i.h"
Johannes Berg24487982009-04-23 18:52:52 +020032#include "driver-ops.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040033#include "rate.h"
Luis Carlos Coboee385852008-02-23 15:17:11 +010034#include "mesh.h"
Johannes Bergc2d15602007-07-27 15:43:23 +020035#include "wme.h"
Johannes Bergf2753dd2009-04-14 10:09:24 +020036#include "led.h"
Johannes Bergfffd0932009-07-08 14:22:54 +020037#include "wep.h"
Johannes Bergc2d15602007-07-27 15:43:23 +020038
39/* privid for wiphys to determine whether they belong to us or not */
Johannes Berg8a47cea2014-01-20 23:55:44 +010040const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
Johannes Bergc2d15602007-07-27 15:43:23 +020041
Luis R. Rodriguez9a953712009-01-22 15:05:53 -080042struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
43{
44 struct ieee80211_local *local;
45 BUG_ON(!wiphy);
46
47 local = wiphy_priv(wiphy);
48 return &local->hw;
49}
50EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
Johannes Bergc2d15602007-07-27 15:43:23 +020051
Johannes Berg5cf121c2008-02-25 16:27:43 +010052void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
Johannes Bergc2d15602007-07-27 15:43:23 +020053{
Johannes Berg252b86c2011-11-16 15:28:55 +010054 struct sk_buff *skb;
Johannes Berg2de8e0d2009-03-23 17:28:35 +010055 struct ieee80211_hdr *hdr;
Johannes Bergc2d15602007-07-27 15:43:23 +020056
Johannes Berg252b86c2011-11-16 15:28:55 +010057 skb_queue_walk(&tx->skbs, skb) {
Johannes Berg2de8e0d2009-03-23 17:28:35 +010058 hdr = (struct ieee80211_hdr *) skb->data;
59 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
Johannes Berg252b86c2011-11-16 15:28:55 +010060 }
Johannes Bergc2d15602007-07-27 15:43:23 +020061}
62
Johannes Berg57fbcce2016-04-12 15:56:15 +020063int ieee80211_frame_duration(enum nl80211_band band, size_t len,
Simon Wunderlich438b61b2013-07-08 16:55:51 +020064 int rate, int erp, int short_preamble,
65 int shift)
Johannes Bergc2d15602007-07-27 15:43:23 +020066{
67 int dur;
68
69 /* calculate duration (in microseconds, rounded up to next higher
70 * integer if it includes a fractional microsecond) to send frame of
71 * len bytes (does not include FCS) at the given rate. Duration will
72 * also include SIFS.
73 *
74 * rate is in 100 kbps, so divident is multiplied by 10 in the
75 * DIV_ROUND_UP() operations.
Simon Wunderlich438b61b2013-07-08 16:55:51 +020076 *
77 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
78 * is assumed to be 0 otherwise.
Johannes Bergc2d15602007-07-27 15:43:23 +020079 */
80
Johannes Berg57fbcce2016-04-12 15:56:15 +020081 if (band == NL80211_BAND_5GHZ || erp) {
Johannes Bergc2d15602007-07-27 15:43:23 +020082 /*
83 * OFDM:
84 *
85 * N_DBPS = DATARATE x 4
86 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
87 * (16 = SIGNAL time, 6 = tail bits)
88 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
89 *
90 * T_SYM = 4 usec
Simon Wunderlich438b61b2013-07-08 16:55:51 +020091 * 802.11a - 18.5.2: aSIFSTime = 16 usec
Johannes Bergc2d15602007-07-27 15:43:23 +020092 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
93 * signal ext = 6 usec
94 */
Johannes Bergc2d15602007-07-27 15:43:23 +020095 dur = 16; /* SIFS + signal ext */
Simon Wunderlich438b61b2013-07-08 16:55:51 +020096 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
97 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
Simon Wunderlich438b61b2013-07-08 16:55:51 +020098
99 /* IEEE 802.11-2012 18.3.2.4: all values above are:
100 * * times 4 for 5 MHz
101 * * times 2 for 10 MHz
102 */
103 dur *= 1 << shift;
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200104
105 /* rates should already consider the channel bandwidth,
106 * don't apply divisor again.
107 */
108 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
109 4 * rate); /* T_SYM x N_SYM */
Johannes Bergc2d15602007-07-27 15:43:23 +0200110 } else {
111 /*
112 * 802.11b or 802.11g with 802.11b compatibility:
113 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
114 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
115 *
116 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
117 * aSIFSTime = 10 usec
118 * aPreambleLength = 144 usec or 72 usec with short preamble
119 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
120 */
121 dur = 10; /* aSIFSTime = 10 usec */
122 dur += short_preamble ? (72 + 24) : (144 + 48);
123
124 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
125 }
126
127 return dur;
128}
129
130/* Exported duration function for driver use */
Johannes Berg32bfd352007-12-19 01:31:26 +0100131__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
132 struct ieee80211_vif *vif,
Johannes Berg57fbcce2016-04-12 15:56:15 +0200133 enum nl80211_band band,
Johannes Berg8318d782008-01-24 19:38:38 +0100134 size_t frame_len,
135 struct ieee80211_rate *rate)
Johannes Bergc2d15602007-07-27 15:43:23 +0200136{
Johannes Berg25d834e2008-09-12 22:52:47 +0200137 struct ieee80211_sub_if_data *sdata;
Johannes Bergc2d15602007-07-27 15:43:23 +0200138 u16 dur;
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200139 int erp, shift = 0;
Johannes Berg25d834e2008-09-12 22:52:47 +0200140 bool short_preamble = false;
Johannes Bergc2d15602007-07-27 15:43:23 +0200141
Johannes Berg8318d782008-01-24 19:38:38 +0100142 erp = 0;
Johannes Berg25d834e2008-09-12 22:52:47 +0200143 if (vif) {
144 sdata = vif_to_sdata(vif);
Johannes Bergbda39332008-10-11 01:51:51 +0200145 short_preamble = sdata->vif.bss_conf.use_short_preamble;
Johannes Berg25d834e2008-09-12 22:52:47 +0200146 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
147 erp = rate->flags & IEEE80211_RATE_ERP_G;
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200148 shift = ieee80211_vif_get_shift(vif);
Johannes Berg25d834e2008-09-12 22:52:47 +0200149 }
Johannes Berg8318d782008-01-24 19:38:38 +0100150
Michal Kazior4ee73f32012-04-11 08:47:56 +0200151 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200152 short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200153
154 return cpu_to_le16(dur);
155}
156EXPORT_SYMBOL(ieee80211_generic_frame_duration);
157
Johannes Berg32bfd352007-12-19 01:31:26 +0100158__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
159 struct ieee80211_vif *vif, size_t frame_len,
Johannes Berge039fa42008-05-15 12:55:29 +0200160 const struct ieee80211_tx_info *frame_txctl)
Johannes Bergc2d15602007-07-27 15:43:23 +0200161{
162 struct ieee80211_local *local = hw_to_local(hw);
163 struct ieee80211_rate *rate;
Johannes Berg25d834e2008-09-12 22:52:47 +0200164 struct ieee80211_sub_if_data *sdata;
Johannes Berg471b3ef2007-12-28 14:32:58 +0100165 bool short_preamble;
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200166 int erp, shift = 0, bitrate;
Johannes Bergc2d15602007-07-27 15:43:23 +0200167 u16 dur;
Johannes Berg2e92e6f2008-05-15 12:55:27 +0200168 struct ieee80211_supported_band *sband;
169
Michal Kazior4ee73f32012-04-11 08:47:56 +0200170 sband = local->hw.wiphy->bands[frame_txctl->band];
Johannes Bergc2d15602007-07-27 15:43:23 +0200171
Johannes Berg25d834e2008-09-12 22:52:47 +0200172 short_preamble = false;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200173
Johannes Berge039fa42008-05-15 12:55:29 +0200174 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
Johannes Berg8318d782008-01-24 19:38:38 +0100175
176 erp = 0;
Johannes Berg25d834e2008-09-12 22:52:47 +0200177 if (vif) {
178 sdata = vif_to_sdata(vif);
Johannes Bergbda39332008-10-11 01:51:51 +0200179 short_preamble = sdata->vif.bss_conf.use_short_preamble;
Johannes Berg25d834e2008-09-12 22:52:47 +0200180 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
181 erp = rate->flags & IEEE80211_RATE_ERP_G;
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200182 shift = ieee80211_vif_get_shift(vif);
Johannes Berg25d834e2008-09-12 22:52:47 +0200183 }
Johannes Bergc2d15602007-07-27 15:43:23 +0200184
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200185 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
186
Johannes Bergc2d15602007-07-27 15:43:23 +0200187 /* CTS duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200188 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200189 erp, short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200190 /* Data frame duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200191 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200192 erp, short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200193 /* ACK duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200194 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200195 erp, short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200196
197 return cpu_to_le16(dur);
198}
199EXPORT_SYMBOL(ieee80211_rts_duration);
200
Johannes Berg32bfd352007-12-19 01:31:26 +0100201__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
202 struct ieee80211_vif *vif,
Johannes Bergc2d15602007-07-27 15:43:23 +0200203 size_t frame_len,
Johannes Berge039fa42008-05-15 12:55:29 +0200204 const struct ieee80211_tx_info *frame_txctl)
Johannes Bergc2d15602007-07-27 15:43:23 +0200205{
206 struct ieee80211_local *local = hw_to_local(hw);
207 struct ieee80211_rate *rate;
Johannes Berg25d834e2008-09-12 22:52:47 +0200208 struct ieee80211_sub_if_data *sdata;
Johannes Berg471b3ef2007-12-28 14:32:58 +0100209 bool short_preamble;
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200210 int erp, shift = 0, bitrate;
Johannes Bergc2d15602007-07-27 15:43:23 +0200211 u16 dur;
Johannes Berg2e92e6f2008-05-15 12:55:27 +0200212 struct ieee80211_supported_band *sband;
213
Michal Kazior4ee73f32012-04-11 08:47:56 +0200214 sband = local->hw.wiphy->bands[frame_txctl->band];
Johannes Bergc2d15602007-07-27 15:43:23 +0200215
Johannes Berg25d834e2008-09-12 22:52:47 +0200216 short_preamble = false;
Daniel Drake7e9ed182007-07-27 15:43:24 +0200217
Johannes Berge039fa42008-05-15 12:55:29 +0200218 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
Johannes Berg8318d782008-01-24 19:38:38 +0100219 erp = 0;
Johannes Berg25d834e2008-09-12 22:52:47 +0200220 if (vif) {
221 sdata = vif_to_sdata(vif);
Johannes Bergbda39332008-10-11 01:51:51 +0200222 short_preamble = sdata->vif.bss_conf.use_short_preamble;
Johannes Berg25d834e2008-09-12 22:52:47 +0200223 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
224 erp = rate->flags & IEEE80211_RATE_ERP_G;
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200225 shift = ieee80211_vif_get_shift(vif);
Johannes Berg25d834e2008-09-12 22:52:47 +0200226 }
Johannes Bergc2d15602007-07-27 15:43:23 +0200227
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200228 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
229
Johannes Bergc2d15602007-07-27 15:43:23 +0200230 /* Data frame duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200231 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200232 erp, short_preamble, shift);
Johannes Berge039fa42008-05-15 12:55:29 +0200233 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
Johannes Bergc2d15602007-07-27 15:43:23 +0200234 /* ACK duration */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200235 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
Simon Wunderlich438b61b2013-07-08 16:55:51 +0200236 erp, short_preamble, shift);
Johannes Bergc2d15602007-07-27 15:43:23 +0200237 }
238
Johannes Bergc2d15602007-07-27 15:43:23 +0200239 return cpu_to_le16(dur);
240}
241EXPORT_SYMBOL(ieee80211_ctstoself_duration);
242
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530243static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
244{
245 struct ieee80211_local *local = sdata->local;
246 struct ieee80211_vif *vif = &sdata->vif;
247 struct fq *fq = &local->fq;
248 struct ps_data *ps = NULL;
249 struct txq_info *txqi;
250 struct sta_info *sta;
251 int i;
252
253 spin_lock_bh(&fq->lock);
254
255 if (sdata->vif.type == NL80211_IFTYPE_AP)
256 ps = &sdata->bss->ps;
257
258 sdata->vif.txqs_stopped[ac] = false;
259
260 list_for_each_entry_rcu(sta, &local->sta_list, list) {
261 if (sdata != sta->sdata)
262 continue;
263
264 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
265 struct ieee80211_txq *txq = sta->sta.txq[i];
266
Erik Stromdahla5ae3262018-09-14 18:00:34 +0200267 if (!txq)
268 continue;
269
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530270 txqi = to_txq_info(txq);
271
272 if (ac != txq->ac)
273 continue;
274
275 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
276 &txqi->flags))
277 continue;
278
279 spin_unlock_bh(&fq->lock);
280 drv_wake_tx_queue(local, txqi);
281 spin_lock_bh(&fq->lock);
282 }
283 }
284
285 if (!vif->txq)
286 goto out;
287
288 txqi = to_txq_info(vif->txq);
289
290 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
291 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
292 goto out;
293
294 spin_unlock_bh(&fq->lock);
295
296 drv_wake_tx_queue(local, txqi);
297 return;
298out:
299 spin_unlock_bh(&fq->lock);
300}
301
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200302static void
303__releases(&local->queue_stop_reason_lock)
304__acquires(&local->queue_stop_reason_lock)
305_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530306{
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530307 struct ieee80211_sub_if_data *sdata;
308 int n_acs = IEEE80211_NUM_ACS;
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530309 int i;
310
311 rcu_read_lock();
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530312
313 if (local->hw.queues < IEEE80211_NUM_ACS)
314 n_acs = 1;
315
316 for (i = 0; i < local->hw.queues; i++) {
317 if (local->queue_stop_reasons[i])
318 continue;
319
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200320 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530321 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
322 int ac;
323
324 for (ac = 0; ac < n_acs; ac++) {
325 int ac_queue = sdata->vif.hw_queue[ac];
326
327 if (ac_queue == i ||
328 sdata->vif.cab_queue == i)
329 __ieee80211_wake_txqs(sdata, ac);
330 }
331 }
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200332 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530333 }
334
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530335 rcu_read_unlock();
336}
337
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200338void ieee80211_wake_txqs(unsigned long data)
339{
340 struct ieee80211_local *local = (struct ieee80211_local *)data;
341 unsigned long flags;
342
343 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
344 _ieee80211_wake_txqs(local, &flags);
345 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
346}
347
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200348void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
349{
350 struct ieee80211_sub_if_data *sdata;
Johannes Berga6f38ac2012-07-04 12:49:59 +0200351 int n_acs = IEEE80211_NUM_ACS;
352
Michal Kazior80a83cf2016-05-19 10:37:48 +0200353 if (local->ops->wake_tx_queue)
354 return;
355
Johannes Berga6f38ac2012-07-04 12:49:59 +0200356 if (local->hw.queues < IEEE80211_NUM_ACS)
357 n_acs = 1;
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200358
359 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
360 int ac;
361
Johannes Bergf142c6b2012-06-18 20:07:15 +0200362 if (!sdata->dev)
363 continue;
364
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200365 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
366 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
367 continue;
368
Johannes Berga6f38ac2012-07-04 12:49:59 +0200369 for (ac = 0; ac < n_acs; ac++) {
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200370 int ac_queue = sdata->vif.hw_queue[ac];
371
372 if (ac_queue == queue ||
373 (sdata->vif.cab_queue == queue &&
374 local->queue_stop_reasons[ac_queue] == 0 &&
375 skb_queue_empty(&local->pending[ac_queue])))
376 netif_wake_subqueue(sdata->dev, ac);
377 }
378 }
379}
380
Kalle Valoce7c9112008-12-18 23:35:20 +0200381static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300382 enum queue_stop_reason reason,
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200383 bool refcounted,
384 unsigned long *flags)
Johannes Bergc2d15602007-07-27 15:43:23 +0200385{
386 struct ieee80211_local *local = hw_to_local(hw);
387
Johannes Bergb5878a22010-04-07 16:48:40 +0200388 trace_wake_queue(local, queue, reason);
389
Johannes Berge4e72fb2009-03-23 17:28:42 +0100390 if (WARN_ON(queue >= hw->queues))
391 return;
Kalle Valoce7c9112008-12-18 23:35:20 +0200392
Johannes Bergada15122012-03-28 11:04:27 +0200393 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
394 return;
395
Johannes Berg856142c2015-11-24 15:29:53 +0100396 if (!refcounted) {
Luciano Coelhocca07b02014-06-13 16:30:05 +0300397 local->q_stop_reasons[queue][reason] = 0;
Johannes Berg856142c2015-11-24 15:29:53 +0100398 } else {
Luciano Coelhocca07b02014-06-13 16:30:05 +0300399 local->q_stop_reasons[queue][reason]--;
Johannes Berg856142c2015-11-24 15:29:53 +0100400 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
401 local->q_stop_reasons[queue][reason] = 0;
402 }
Luciano Coelhocca07b02014-06-13 16:30:05 +0300403
404 if (local->q_stop_reasons[queue][reason] == 0)
405 __clear_bit(reason, &local->queue_stop_reasons[queue]);
Johannes Berg96f5e662009-02-12 00:51:53 +0100406
407 if (local->queue_stop_reasons[queue] != 0)
408 /* someone still has this queue stopped */
409 return;
410
Johannes Berg7236fe22010-03-22 13:42:43 -0700411 if (skb_queue_empty(&local->pending[queue])) {
412 rcu_read_lock();
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200413 ieee80211_propagate_queue_wake(local, queue);
Johannes Berg7236fe22010-03-22 13:42:43 -0700414 rcu_read_unlock();
415 } else
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200416 tasklet_schedule(&local->tx_pending_tasklet);
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530417
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200418 /*
419 * Calling _ieee80211_wake_txqs here can be a problem because it may
420 * release queue_stop_reason_lock which has been taken by
421 * __ieee80211_wake_queue's caller. It is certainly not very nice to
422 * release someone's lock, but it is fine because all the callers of
423 * __ieee80211_wake_queue call it right before releasing the lock.
424 */
425 if (local->ops->wake_tx_queue) {
426 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
427 tasklet_schedule(&local->wake_txqs_tasklet);
428 else
429 _ieee80211_wake_txqs(local, flags);
430 }
Johannes Bergc2d15602007-07-27 15:43:23 +0200431}
Kalle Valoce7c9112008-12-18 23:35:20 +0200432
Johannes Berg96f5e662009-02-12 00:51:53 +0100433void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300434 enum queue_stop_reason reason,
435 bool refcounted)
Kalle Valoce7c9112008-12-18 23:35:20 +0200436{
437 struct ieee80211_local *local = hw_to_local(hw);
438 unsigned long flags;
439
440 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200441 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
Kalle Valoce7c9112008-12-18 23:35:20 +0200442 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
443}
444
445void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
446{
447 ieee80211_wake_queue_by_reason(hw, queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300448 IEEE80211_QUEUE_STOP_REASON_DRIVER,
449 false);
Kalle Valoce7c9112008-12-18 23:35:20 +0200450}
Johannes Bergc2d15602007-07-27 15:43:23 +0200451EXPORT_SYMBOL(ieee80211_wake_queue);
452
Kalle Valoce7c9112008-12-18 23:35:20 +0200453static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300454 enum queue_stop_reason reason,
455 bool refcounted)
Johannes Bergc2d15602007-07-27 15:43:23 +0200456{
457 struct ieee80211_local *local = hw_to_local(hw);
Johannes Bergcf0277e2010-01-05 18:00:58 +0100458 struct ieee80211_sub_if_data *sdata;
Johannes Berga6f38ac2012-07-04 12:49:59 +0200459 int n_acs = IEEE80211_NUM_ACS;
Johannes Bergc2d15602007-07-27 15:43:23 +0200460
Johannes Bergb5878a22010-04-07 16:48:40 +0200461 trace_stop_queue(local, queue, reason);
462
Johannes Berge4e72fb2009-03-23 17:28:42 +0100463 if (WARN_ON(queue >= hw->queues))
464 return;
Johannes Berg96f5e662009-02-12 00:51:53 +0100465
Luciano Coelhocca07b02014-06-13 16:30:05 +0300466 if (!refcounted)
467 local->q_stop_reasons[queue][reason] = 1;
468 else
469 local->q_stop_reasons[queue][reason]++;
Johannes Bergada15122012-03-28 11:04:27 +0200470
Luciano Coelhocca07b02014-06-13 16:30:05 +0300471 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
472 return;
Johannes Bergcf0277e2010-01-05 18:00:58 +0100473
Johannes Berga6f38ac2012-07-04 12:49:59 +0200474 if (local->hw.queues < IEEE80211_NUM_ACS)
475 n_acs = 1;
476
Johannes Bergcf0277e2010-01-05 18:00:58 +0100477 rcu_read_lock();
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200478 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
479 int ac;
480
Johannes Bergf142c6b2012-06-18 20:07:15 +0200481 if (!sdata->dev)
482 continue;
483
Johannes Berga6f38ac2012-07-04 12:49:59 +0200484 for (ac = 0; ac < n_acs; ac++) {
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200485 if (sdata->vif.hw_queue[ac] == queue ||
Manikanta Pubbisetty21a5d4c2018-07-11 00:12:53 +0530486 sdata->vif.cab_queue == queue) {
487 if (!local->ops->wake_tx_queue) {
488 netif_stop_subqueue(sdata->dev, ac);
489 continue;
490 }
491 spin_lock(&local->fq.lock);
492 sdata->vif.txqs_stopped[ac] = true;
493 spin_unlock(&local->fq.lock);
494 }
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200495 }
496 }
Johannes Bergcf0277e2010-01-05 18:00:58 +0100497 rcu_read_unlock();
Johannes Bergc2d15602007-07-27 15:43:23 +0200498}
Kalle Valoce7c9112008-12-18 23:35:20 +0200499
Johannes Berg96f5e662009-02-12 00:51:53 +0100500void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300501 enum queue_stop_reason reason,
502 bool refcounted)
Kalle Valoce7c9112008-12-18 23:35:20 +0200503{
504 struct ieee80211_local *local = hw_to_local(hw);
505 unsigned long flags;
506
507 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Luciano Coelhocca07b02014-06-13 16:30:05 +0300508 __ieee80211_stop_queue(hw, queue, reason, refcounted);
Kalle Valoce7c9112008-12-18 23:35:20 +0200509 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
510}
511
512void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
513{
514 ieee80211_stop_queue_by_reason(hw, queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300515 IEEE80211_QUEUE_STOP_REASON_DRIVER,
516 false);
Kalle Valoce7c9112008-12-18 23:35:20 +0200517}
Johannes Bergc2d15602007-07-27 15:43:23 +0200518EXPORT_SYMBOL(ieee80211_stop_queue);
519
Johannes Berg8f77f382009-06-07 21:58:37 +0200520void ieee80211_add_pending_skb(struct ieee80211_local *local,
521 struct sk_buff *skb)
522{
523 struct ieee80211_hw *hw = &local->hw;
524 unsigned long flags;
Johannes Berga7bc3762009-07-27 10:33:31 +0200525 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200526 int queue = info->hw_queue;
Johannes Berga7bc3762009-07-27 10:33:31 +0200527
528 if (WARN_ON(!info->control.vif)) {
Felix Fietkaud4fa14c2012-10-10 22:40:23 +0200529 ieee80211_free_txskb(&local->hw, skb);
Johannes Berga7bc3762009-07-27 10:33:31 +0200530 return;
531 }
Johannes Berg8f77f382009-06-07 21:58:37 +0200532
533 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Luciano Coelhocca07b02014-06-13 16:30:05 +0300534 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
535 false);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200536 __skb_queue_tail(&local->pending[queue], skb);
Luciano Coelhocca07b02014-06-13 16:30:05 +0300537 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200538 false, &flags);
Johannes Berg8f77f382009-06-07 21:58:37 +0200539 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
540}
541
Johannes Berge3685e02014-02-20 11:19:58 +0100542void ieee80211_add_pending_skbs(struct ieee80211_local *local,
543 struct sk_buff_head *skbs)
Johannes Berg8f77f382009-06-07 21:58:37 +0200544{
545 struct ieee80211_hw *hw = &local->hw;
546 struct sk_buff *skb;
547 unsigned long flags;
Johannes Bergb0b97a82011-09-29 16:04:30 +0200548 int queue, i;
Johannes Berg8f77f382009-06-07 21:58:37 +0200549
550 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Johannes Berg8f77f382009-06-07 21:58:37 +0200551 while ((skb = skb_dequeue(skbs))) {
Johannes Berga7bc3762009-07-27 10:33:31 +0200552 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
553
554 if (WARN_ON(!info->control.vif)) {
Felix Fietkaud4fa14c2012-10-10 22:40:23 +0200555 ieee80211_free_txskb(&local->hw, skb);
Johannes Berga7bc3762009-07-27 10:33:31 +0200556 continue;
557 }
558
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200559 queue = info->hw_queue;
Johannes Berg4644ae82012-03-28 11:04:28 +0200560
561 __ieee80211_stop_queue(hw, queue,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300562 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
563 false);
Johannes Berg4644ae82012-03-28 11:04:28 +0200564
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200565 __skb_queue_tail(&local->pending[queue], skb);
Johannes Berg8f77f382009-06-07 21:58:37 +0200566 }
567
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200568 for (i = 0; i < hw->queues; i++)
Johannes Berg8f77f382009-06-07 21:58:37 +0200569 __ieee80211_wake_queue(hw, i,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300570 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200571 false, &flags);
Johannes Berg8f77f382009-06-07 21:58:37 +0200572 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
Johannes Berg8f77f382009-06-07 21:58:37 +0200573}
574
Kalle Valoce7c9112008-12-18 23:35:20 +0200575void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
Johannes Berg445ea4e2013-02-13 12:25:28 +0100576 unsigned long queues,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300577 enum queue_stop_reason reason,
578 bool refcounted)
Johannes Bergc2d15602007-07-27 15:43:23 +0200579{
Kalle Valoce7c9112008-12-18 23:35:20 +0200580 struct ieee80211_local *local = hw_to_local(hw);
581 unsigned long flags;
Johannes Bergc2d15602007-07-27 15:43:23 +0200582 int i;
583
Kalle Valoce7c9112008-12-18 23:35:20 +0200584 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
585
Johannes Berg445ea4e2013-02-13 12:25:28 +0100586 for_each_set_bit(i, &queues, hw->queues)
Luciano Coelhocca07b02014-06-13 16:30:05 +0300587 __ieee80211_stop_queue(hw, i, reason, refcounted);
Kalle Valoce7c9112008-12-18 23:35:20 +0200588
589 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
590}
591
592void ieee80211_stop_queues(struct ieee80211_hw *hw)
593{
Johannes Berg445ea4e2013-02-13 12:25:28 +0100594 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300595 IEEE80211_QUEUE_STOP_REASON_DRIVER,
596 false);
Johannes Bergc2d15602007-07-27 15:43:23 +0200597}
598EXPORT_SYMBOL(ieee80211_stop_queues);
599
Tomas Winkler92ab8532008-07-24 21:02:04 +0300600int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
601{
602 struct ieee80211_local *local = hw_to_local(hw);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200603 unsigned long flags;
604 int ret;
Johannes Berg96f5e662009-02-12 00:51:53 +0100605
Johannes Berge4e72fb2009-03-23 17:28:42 +0100606 if (WARN_ON(queue >= hw->queues))
607 return true;
Johannes Berg96f5e662009-02-12 00:51:53 +0100608
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200609 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
Thomas Pedersen2419ea12013-04-10 15:41:40 -0700610 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
611 &local->queue_stop_reasons[queue]);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200612 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
613 return ret;
Tomas Winkler92ab8532008-07-24 21:02:04 +0300614}
615EXPORT_SYMBOL(ieee80211_queue_stopped);
616
Kalle Valoce7c9112008-12-18 23:35:20 +0200617void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
Johannes Berg445ea4e2013-02-13 12:25:28 +0100618 unsigned long queues,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300619 enum queue_stop_reason reason,
620 bool refcounted)
Johannes Bergc2d15602007-07-27 15:43:23 +0200621{
Kalle Valoce7c9112008-12-18 23:35:20 +0200622 struct ieee80211_local *local = hw_to_local(hw);
623 unsigned long flags;
Johannes Bergc2d15602007-07-27 15:43:23 +0200624 int i;
625
Kalle Valoce7c9112008-12-18 23:35:20 +0200626 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
627
Johannes Berg445ea4e2013-02-13 12:25:28 +0100628 for_each_set_bit(i, &queues, hw->queues)
Emmanuel Grumbachf6c7f032018-12-03 21:15:49 +0200629 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
Kalle Valoce7c9112008-12-18 23:35:20 +0200630
631 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
632}
633
634void ieee80211_wake_queues(struct ieee80211_hw *hw)
635{
Johannes Berg445ea4e2013-02-13 12:25:28 +0100636 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300637 IEEE80211_QUEUE_STOP_REASON_DRIVER,
638 false);
Johannes Bergc2d15602007-07-27 15:43:23 +0200639}
640EXPORT_SYMBOL(ieee80211_wake_queues);
Johannes Bergdabeb342007-11-09 01:57:29 +0100641
Luciano Coelho26da23b2014-06-13 16:30:06 +0300642static unsigned int
643ieee80211_get_vif_queues(struct ieee80211_local *local,
644 struct ieee80211_sub_if_data *sdata)
Johannes Berg39ecc012013-02-13 12:11:00 +0100645{
Luciano Coelho26da23b2014-06-13 16:30:06 +0300646 unsigned int queues;
Johannes Berg39ecc012013-02-13 12:11:00 +0100647
Johannes Berg30686bf2015-06-02 21:39:54 +0200648 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
Johannes Berg39ecc012013-02-13 12:11:00 +0100649 int ac;
650
651 queues = 0;
652
653 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
654 queues |= BIT(sdata->vif.hw_queue[ac]);
655 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
656 queues |= BIT(sdata->vif.cab_queue);
657 } else {
658 /* all queues */
659 queues = BIT(local->hw.queues) - 1;
660 }
661
Luciano Coelho26da23b2014-06-13 16:30:06 +0300662 return queues;
663}
664
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200665void __ieee80211_flush_queues(struct ieee80211_local *local,
666 struct ieee80211_sub_if_data *sdata,
Emmanuel Grumbach3b24f4c2015-01-07 15:42:39 +0200667 unsigned int queues, bool drop)
Luciano Coelho26da23b2014-06-13 16:30:06 +0300668{
Luciano Coelho26da23b2014-06-13 16:30:06 +0300669 if (!local->ops->flush)
670 return;
671
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200672 /*
673 * If no queue was set, or if the HW doesn't support
674 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
675 */
Johannes Berg30686bf2015-06-02 21:39:54 +0200676 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200677 queues = ieee80211_get_vif_queues(local, sdata);
Luciano Coelho26da23b2014-06-13 16:30:06 +0300678
Luciano Coelho59f48fe2014-06-13 16:30:04 +0300679 ieee80211_stop_queues_by_reason(&local->hw, queues,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300680 IEEE80211_QUEUE_STOP_REASON_FLUSH,
681 false);
Johannes Berg445ea4e2013-02-13 12:25:28 +0100682
Emmanuel Grumbach3b24f4c2015-01-07 15:42:39 +0200683 drv_flush(local, sdata, queues, drop);
Johannes Berg445ea4e2013-02-13 12:25:28 +0100684
Luciano Coelho59f48fe2014-06-13 16:30:04 +0300685 ieee80211_wake_queues_by_reason(&local->hw, queues,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300686 IEEE80211_QUEUE_STOP_REASON_FLUSH,
687 false);
Johannes Berg39ecc012013-02-13 12:11:00 +0100688}
689
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200690void ieee80211_flush_queues(struct ieee80211_local *local,
Emmanuel Grumbach3b24f4c2015-01-07 15:42:39 +0200691 struct ieee80211_sub_if_data *sdata, bool drop)
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200692{
Emmanuel Grumbach3b24f4c2015-01-07 15:42:39 +0200693 __ieee80211_flush_queues(local, sdata, 0, drop);
Liad Kaufman4f9610d2014-11-09 18:50:21 +0200694}
695
Luciano Coelho26da23b2014-06-13 16:30:06 +0300696void ieee80211_stop_vif_queues(struct ieee80211_local *local,
697 struct ieee80211_sub_if_data *sdata,
698 enum queue_stop_reason reason)
699{
700 ieee80211_stop_queues_by_reason(&local->hw,
701 ieee80211_get_vif_queues(local, sdata),
702 reason, true);
703}
704
705void ieee80211_wake_vif_queues(struct ieee80211_local *local,
706 struct ieee80211_sub_if_data *sdata,
707 enum queue_stop_reason reason)
708{
709 ieee80211_wake_queues_by_reason(&local->hw,
710 ieee80211_get_vif_queues(local, sdata),
711 reason, true);
712}
713
Arik Nemtsov3384d752015-03-01 09:10:15 +0200714static void __iterate_interfaces(struct ieee80211_local *local,
715 u32 iter_flags,
716 void (*iterator)(void *data, u8 *mac,
717 struct ieee80211_vif *vif),
718 void *data)
Johannes Bergdabeb342007-11-09 01:57:29 +0100719{
Johannes Bergdabeb342007-11-09 01:57:29 +0100720 struct ieee80211_sub_if_data *sdata;
Arik Nemtsov3384d752015-03-01 09:10:15 +0200721 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
Johannes Bergdabeb342007-11-09 01:57:29 +0100722
Johannes Berge38bad42007-11-28 10:55:32 +0100723 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
Johannes Berg51fb61e2007-12-19 01:31:27 +0100724 switch (sdata->vif.type) {
Johannes Berg05c914f2008-09-11 00:01:58 +0200725 case NL80211_IFTYPE_MONITOR:
Aviya Erenfeldd8212182016-08-29 23:25:15 +0300726 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
Felix Fietkau31eba5b2013-05-28 13:01:53 +0200727 continue;
728 break;
Johannes Berg05c914f2008-09-11 00:01:58 +0200729 case NL80211_IFTYPE_AP_VLAN:
Johannes Bergdabeb342007-11-09 01:57:29 +0100730 continue;
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200731 default:
Johannes Bergdabeb342007-11-09 01:57:29 +0100732 break;
733 }
Johannes Berg8b2c9822012-11-06 20:23:30 +0100734 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
Arik Nemtsov3384d752015-03-01 09:10:15 +0200735 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
Johannes Berg8b2c9822012-11-06 20:23:30 +0100736 continue;
Arik Nemtsov3384d752015-03-01 09:10:15 +0200737 if (ieee80211_sdata_running(sdata) || !active_only)
Johannes Berg47846c92009-11-25 17:46:19 +0100738 iterator(data, sdata->vif.addr,
Johannes Berg32bfd352007-12-19 01:31:26 +0100739 &sdata->vif);
Johannes Bergdabeb342007-11-09 01:57:29 +0100740 }
Johannes Berge38bad42007-11-28 10:55:32 +0100741
Johannes Bergc7c71062013-08-21 22:07:20 +0200742 sdata = rcu_dereference_check(local->monitor_sdata,
743 lockdep_is_held(&local->iflist_mtx) ||
744 lockdep_rtnl_is_held());
Johannes Berg8b2c9822012-11-06 20:23:30 +0100745 if (sdata &&
Arik Nemtsov3384d752015-03-01 09:10:15 +0200746 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
Johannes Berg8b2c9822012-11-06 20:23:30 +0100747 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
Johannes Berg685fb722012-07-11 16:38:09 +0200748 iterator(data, sdata->vif.addr, &sdata->vif);
Johannes Bergc7c71062013-08-21 22:07:20 +0200749}
Johannes Berg685fb722012-07-11 16:38:09 +0200750
Arik Nemtsov3384d752015-03-01 09:10:15 +0200751void ieee80211_iterate_interfaces(
Johannes Bergc7c71062013-08-21 22:07:20 +0200752 struct ieee80211_hw *hw, u32 iter_flags,
753 void (*iterator)(void *data, u8 *mac,
754 struct ieee80211_vif *vif),
755 void *data)
756{
757 struct ieee80211_local *local = hw_to_local(hw);
758
759 mutex_lock(&local->iflist_mtx);
Arik Nemtsov3384d752015-03-01 09:10:15 +0200760 __iterate_interfaces(local, iter_flags, iterator, data);
Johannes Bergc7c71062013-08-21 22:07:20 +0200761 mutex_unlock(&local->iflist_mtx);
762}
Arik Nemtsov3384d752015-03-01 09:10:15 +0200763EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
Johannes Bergc7c71062013-08-21 22:07:20 +0200764
765void ieee80211_iterate_active_interfaces_atomic(
766 struct ieee80211_hw *hw, u32 iter_flags,
767 void (*iterator)(void *data, u8 *mac,
768 struct ieee80211_vif *vif),
769 void *data)
770{
771 struct ieee80211_local *local = hw_to_local(hw);
772
773 rcu_read_lock();
Arik Nemtsov3384d752015-03-01 09:10:15 +0200774 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
775 iterator, data);
Johannes Berge38bad42007-11-28 10:55:32 +0100776 rcu_read_unlock();
Johannes Bergdabeb342007-11-09 01:57:29 +0100777}
Ivo van Doorn2f561fe2008-05-10 13:40:49 +0200778EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
Johannes Berg37ffc8d2008-09-08 16:40:36 +0200779
Johannes Bergc7c71062013-08-21 22:07:20 +0200780void ieee80211_iterate_active_interfaces_rtnl(
781 struct ieee80211_hw *hw, u32 iter_flags,
782 void (*iterator)(void *data, u8 *mac,
783 struct ieee80211_vif *vif),
784 void *data)
785{
786 struct ieee80211_local *local = hw_to_local(hw);
787
788 ASSERT_RTNL();
789
Arik Nemtsov3384d752015-03-01 09:10:15 +0200790 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
791 iterator, data);
Johannes Bergc7c71062013-08-21 22:07:20 +0200792}
793EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
794
Arik Nemtsov0fc1e042014-10-22 12:30:59 +0300795static void __iterate_stations(struct ieee80211_local *local,
796 void (*iterator)(void *data,
797 struct ieee80211_sta *sta),
798 void *data)
799{
800 struct sta_info *sta;
801
802 list_for_each_entry_rcu(sta, &local->sta_list, list) {
803 if (!sta->uploaded)
804 continue;
805
806 iterator(data, &sta->sta);
807 }
808}
809
810void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
811 void (*iterator)(void *data,
812 struct ieee80211_sta *sta),
813 void *data)
814{
815 struct ieee80211_local *local = hw_to_local(hw);
816
817 rcu_read_lock();
818 __iterate_stations(local, iterator, data);
819 rcu_read_unlock();
820}
821EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
822
Johannes Bergad7e7182013-11-13 13:37:47 +0100823struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
824{
825 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
826
827 if (!ieee80211_sdata_running(sdata) ||
828 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
829 return NULL;
830 return &sdata->vif;
831}
832EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
833
Emmanuel Grumbachdc5a1ad2015-03-12 08:53:24 +0200834struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
835{
Johannes Berg6513e982015-06-10 20:18:55 +0300836 struct ieee80211_sub_if_data *sdata;
837
838 if (!vif)
839 return NULL;
840
841 sdata = vif_to_sdata(vif);
Emmanuel Grumbachdc5a1ad2015-03-12 08:53:24 +0200842
843 if (!ieee80211_sdata_running(sdata) ||
844 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
845 return NULL;
846
847 return &sdata->wdev;
848}
849EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
850
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400851/*
852 * Nothing should have been stuffed into the workqueue during
Emmanuel Grumbach4afaff12015-01-22 23:32:46 +0200853 * the suspend->resume cycle. Since we can't check each caller
854 * of this function if we are already quiescing / suspended,
855 * check here and don't WARN since this can actually happen when
856 * the rx path (for example) is racing against __ieee80211_suspend
857 * and suspending / quiescing was set after the rx path checked
858 * them.
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400859 */
860static bool ieee80211_can_queue_work(struct ieee80211_local *local)
861{
Emmanuel Grumbach4afaff12015-01-22 23:32:46 +0200862 if (local->quiescing || (local->suspended && !local->resuming)) {
863 pr_warn("queueing ieee80211 work while going to suspend\n");
Johannes Bergceb99fe2009-11-19 14:29:39 +0100864 return false;
Emmanuel Grumbach4afaff12015-01-22 23:32:46 +0200865 }
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400866
867 return true;
868}
869
870void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
871{
872 struct ieee80211_local *local = hw_to_local(hw);
873
874 if (!ieee80211_can_queue_work(local))
875 return;
876
877 queue_work(local->workqueue, work);
878}
879EXPORT_SYMBOL(ieee80211_queue_work);
880
881void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
882 struct delayed_work *dwork,
883 unsigned long delay)
884{
885 struct ieee80211_local *local = hw_to_local(hw);
886
887 if (!ieee80211_can_queue_work(local))
888 return;
889
890 queue_delayed_work(local->workqueue, dwork, delay);
891}
892EXPORT_SYMBOL(ieee80211_queue_delayed_work);
893
Johannes Berg35d865a2013-05-28 10:54:03 +0200894u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
Johannes Bergdd769862011-11-18 16:54:50 +0100895 struct ieee802_11_elems *elems,
896 u64 filter, u32 crc)
897{
898 size_t left = len;
Johannes Berg35d865a2013-05-28 10:54:03 +0200899 const u8 *pos = start;
Johannes Bergdd769862011-11-18 16:54:50 +0100900 bool calc_crc = filter != 0;
Paul Stewartfcff4f12012-02-23 17:59:53 -0800901 DECLARE_BITMAP(seen_elems, 256);
Johannes Bergb2e506b2013-03-26 14:54:16 +0100902 const u8 *ie;
Johannes Bergdd769862011-11-18 16:54:50 +0100903
Paul Stewartfcff4f12012-02-23 17:59:53 -0800904 bitmap_zero(seen_elems, 256);
Johannes Bergdd769862011-11-18 16:54:50 +0100905 memset(elems, 0, sizeof(*elems));
906 elems->ie_start = start;
907 elems->total_len = len;
908
909 while (left >= 2) {
910 u8 id, elen;
Paul Stewartfcff4f12012-02-23 17:59:53 -0800911 bool elem_parse_failed;
Johannes Bergdd769862011-11-18 16:54:50 +0100912
913 id = *pos++;
914 elen = *pos++;
915 left -= 2;
916
Paul Stewartfcff4f12012-02-23 17:59:53 -0800917 if (elen > left) {
918 elems->parse_error = true;
Johannes Bergdd769862011-11-18 16:54:50 +0100919 break;
Paul Stewartfcff4f12012-02-23 17:59:53 -0800920 }
921
Johannes Berg9690fb12012-10-24 14:19:53 +0200922 switch (id) {
923 case WLAN_EID_SSID:
924 case WLAN_EID_SUPP_RATES:
925 case WLAN_EID_FH_PARAMS:
926 case WLAN_EID_DS_PARAMS:
927 case WLAN_EID_CF_PARAMS:
928 case WLAN_EID_TIM:
929 case WLAN_EID_IBSS_PARAMS:
930 case WLAN_EID_CHALLENGE:
931 case WLAN_EID_RSN:
932 case WLAN_EID_ERP_INFO:
933 case WLAN_EID_EXT_SUPP_RATES:
934 case WLAN_EID_HT_CAPABILITY:
935 case WLAN_EID_HT_OPERATION:
936 case WLAN_EID_VHT_CAPABILITY:
937 case WLAN_EID_VHT_OPERATION:
938 case WLAN_EID_MESH_ID:
939 case WLAN_EID_MESH_CONFIG:
940 case WLAN_EID_PEER_MGMT:
941 case WLAN_EID_PREQ:
942 case WLAN_EID_PREP:
943 case WLAN_EID_PERR:
944 case WLAN_EID_RANN:
945 case WLAN_EID_CHANNEL_SWITCH:
946 case WLAN_EID_EXT_CHANSWITCH_ANN:
947 case WLAN_EID_COUNTRY:
948 case WLAN_EID_PWR_CONSTRAINT:
949 case WLAN_EID_TIMEOUT_INTERVAL:
Johannes Berg85220d72013-03-25 18:29:27 +0100950 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
Johannes Bergb2e506b2013-03-26 14:54:16 +0100951 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
Chun-Yeow Yeoh8f2535b2013-10-14 19:08:27 -0700952 case WLAN_EID_CHAN_SWITCH_PARAM:
Arik Nemtsov9041c1f2014-11-09 18:50:15 +0200953 case WLAN_EID_EXT_CAPABILITY:
Arik Nemtsov538375842014-11-09 18:50:18 +0200954 case WLAN_EID_CHAN_SWITCH_TIMING:
955 case WLAN_EID_LINK_ID:
Avraham Sterne38a0172017-04-26 10:58:47 +0300956 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
Johannes Bergb2e506b2013-03-26 14:54:16 +0100957 /*
958 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
959 * that if the content gets bigger it might be needed more than once
960 */
Johannes Berg9690fb12012-10-24 14:19:53 +0200961 if (test_bit(id, seen_elems)) {
962 elems->parse_error = true;
963 left -= elen;
964 pos += elen;
965 continue;
966 }
967 break;
Paul Stewartfcff4f12012-02-23 17:59:53 -0800968 }
Johannes Bergdd769862011-11-18 16:54:50 +0100969
970 if (calc_crc && id < 64 && (filter & (1ULL << id)))
971 crc = crc32_be(crc, pos - 2, elen + 2);
972
Paul Stewartfcff4f12012-02-23 17:59:53 -0800973 elem_parse_failed = false;
974
Johannes Bergdd769862011-11-18 16:54:50 +0100975 switch (id) {
Arik Nemtsov538375842014-11-09 18:50:18 +0200976 case WLAN_EID_LINK_ID:
977 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
978 elem_parse_failed = true;
979 break;
980 }
981 elems->lnk_id = (void *)(pos - 2);
982 break;
983 case WLAN_EID_CHAN_SWITCH_TIMING:
984 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
985 elem_parse_failed = true;
986 break;
987 }
988 elems->ch_sw_timing = (void *)pos;
989 break;
Arik Nemtsov9041c1f2014-11-09 18:50:15 +0200990 case WLAN_EID_EXT_CAPABILITY:
991 elems->ext_capab = pos;
992 elems->ext_capab_len = elen;
993 break;
Johannes Bergdd769862011-11-18 16:54:50 +0100994 case WLAN_EID_SSID:
995 elems->ssid = pos;
996 elems->ssid_len = elen;
997 break;
998 case WLAN_EID_SUPP_RATES:
999 elems->supp_rates = pos;
1000 elems->supp_rates_len = elen;
1001 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001002 case WLAN_EID_DS_PARAMS:
Johannes Berg1cd8e882013-03-27 14:30:12 +01001003 if (elen >= 1)
1004 elems->ds_params = pos;
1005 else
1006 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001007 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001008 case WLAN_EID_TIM:
1009 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1010 elems->tim = (void *)pos;
1011 elems->tim_len = elen;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001012 } else
1013 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001014 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001015 case WLAN_EID_CHALLENGE:
1016 elems->challenge = pos;
1017 elems->challenge_len = elen;
1018 break;
1019 case WLAN_EID_VENDOR_SPECIFIC:
1020 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1021 pos[2] == 0xf2) {
1022 /* Microsoft OUI (00:50:F2) */
1023
1024 if (calc_crc)
1025 crc = crc32_be(crc, pos - 2, elen + 2);
1026
Johannes Berg441a33b2013-02-12 16:27:04 +01001027 if (elen >= 5 && pos[3] == 2) {
Johannes Bergdd769862011-11-18 16:54:50 +01001028 /* OUI Type 2 - WMM IE */
1029 if (pos[4] == 0) {
1030 elems->wmm_info = pos;
1031 elems->wmm_info_len = elen;
1032 } else if (pos[4] == 1) {
1033 elems->wmm_param = pos;
1034 elems->wmm_param_len = elen;
1035 }
1036 }
1037 }
1038 break;
1039 case WLAN_EID_RSN:
1040 elems->rsn = pos;
1041 elems->rsn_len = elen;
1042 break;
1043 case WLAN_EID_ERP_INFO:
Johannes Berg1946bed2013-03-27 14:31:53 +01001044 if (elen >= 1)
1045 elems->erp_info = pos;
1046 else
1047 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001048 break;
1049 case WLAN_EID_EXT_SUPP_RATES:
1050 elems->ext_supp_rates = pos;
1051 elems->ext_supp_rates_len = elen;
1052 break;
1053 case WLAN_EID_HT_CAPABILITY:
1054 if (elen >= sizeof(struct ieee80211_ht_cap))
1055 elems->ht_cap_elem = (void *)pos;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001056 else
1057 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001058 break;
Johannes Berg074d46d2012-03-15 19:45:16 +01001059 case WLAN_EID_HT_OPERATION:
1060 if (elen >= sizeof(struct ieee80211_ht_operation))
1061 elems->ht_operation = (void *)pos;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001062 else
1063 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001064 break;
Mahesh Palivela818255e2012-10-10 11:33:04 +00001065 case WLAN_EID_VHT_CAPABILITY:
1066 if (elen >= sizeof(struct ieee80211_vht_cap))
1067 elems->vht_cap_elem = (void *)pos;
1068 else
1069 elem_parse_failed = true;
1070 break;
1071 case WLAN_EID_VHT_OPERATION:
1072 if (elen >= sizeof(struct ieee80211_vht_operation))
1073 elems->vht_operation = (void *)pos;
1074 else
1075 elem_parse_failed = true;
1076 break;
Johannes Bergbee7f5862013-02-07 22:24:55 +01001077 case WLAN_EID_OPMODE_NOTIF:
1078 if (elen > 0)
1079 elems->opmode_notif = pos;
1080 else
1081 elem_parse_failed = true;
1082 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001083 case WLAN_EID_MESH_ID:
1084 elems->mesh_id = pos;
1085 elems->mesh_id_len = elen;
1086 break;
1087 case WLAN_EID_MESH_CONFIG:
1088 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1089 elems->mesh_config = (void *)pos;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001090 else
1091 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001092 break;
1093 case WLAN_EID_PEER_MGMT:
1094 elems->peering = pos;
1095 elems->peering_len = elen;
1096 break;
Marco Porsch3f52b7e2013-01-30 18:14:08 +01001097 case WLAN_EID_MESH_AWAKE_WINDOW:
1098 if (elen >= 2)
1099 elems->awake_window = (void *)pos;
1100 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001101 case WLAN_EID_PREQ:
1102 elems->preq = pos;
1103 elems->preq_len = elen;
1104 break;
1105 case WLAN_EID_PREP:
1106 elems->prep = pos;
1107 elems->prep_len = elen;
1108 break;
1109 case WLAN_EID_PERR:
1110 elems->perr = pos;
1111 elems->perr_len = elen;
1112 break;
1113 case WLAN_EID_RANN:
1114 if (elen >= sizeof(struct ieee80211_rann_ie))
1115 elems->rann = (void *)pos;
Paul Stewartfcff4f12012-02-23 17:59:53 -08001116 else
1117 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001118 break;
1119 case WLAN_EID_CHANNEL_SWITCH:
Johannes Berg5bc14202012-08-01 16:13:02 +02001120 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1121 elem_parse_failed = true;
1122 break;
1123 }
1124 elems->ch_switch_ie = (void *)pos;
Johannes Bergdd769862011-11-18 16:54:50 +01001125 break;
Johannes Bergb4f286a12013-03-26 14:13:58 +01001126 case WLAN_EID_EXT_CHANSWITCH_ANN:
1127 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1128 elem_parse_failed = true;
1129 break;
1130 }
1131 elems->ext_chansw_ie = (void *)pos;
1132 break;
Johannes Berg85220d72013-03-25 18:29:27 +01001133 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1134 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1135 elem_parse_failed = true;
1136 break;
1137 }
1138 elems->sec_chan_offs = (void *)pos;
1139 break;
Chun-Yeow Yeoh8f2535b2013-10-14 19:08:27 -07001140 case WLAN_EID_CHAN_SWITCH_PARAM:
1141 if (elen !=
1142 sizeof(*elems->mesh_chansw_params_ie)) {
1143 elem_parse_failed = true;
1144 break;
1145 }
1146 elems->mesh_chansw_params_ie = (void *)pos;
1147 break;
Johannes Bergb2e506b2013-03-26 14:54:16 +01001148 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1149 if (!action ||
1150 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1151 elem_parse_failed = true;
1152 break;
1153 }
1154 elems->wide_bw_chansw_ie = (void *)pos;
1155 break;
1156 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1157 if (action) {
1158 elem_parse_failed = true;
1159 break;
1160 }
1161 /*
1162 * This is a bit tricky, but as we only care about
1163 * the wide bandwidth channel switch element, so
1164 * just parse it out manually.
1165 */
1166 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1167 pos, elen);
1168 if (ie) {
1169 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1170 elems->wide_bw_chansw_ie =
1171 (void *)(ie + 2);
1172 else
1173 elem_parse_failed = true;
1174 }
1175 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001176 case WLAN_EID_COUNTRY:
1177 elems->country_elem = pos;
1178 elems->country_elem_len = elen;
1179 break;
1180 case WLAN_EID_PWR_CONSTRAINT:
Johannes Berg761a48d2012-09-05 13:07:00 +02001181 if (elen != 1) {
1182 elem_parse_failed = true;
1183 break;
1184 }
Johannes Bergdd769862011-11-18 16:54:50 +01001185 elems->pwr_constr_elem = pos;
Johannes Bergdd769862011-11-18 16:54:50 +01001186 break;
Steinar H. Gundersonc8d65912014-09-03 06:48:37 -07001187 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1188 /* Lots of different options exist, but we only care
1189 * about the Dynamic Transmit Power Control element.
1190 * First check for the Cisco OUI, then for the DTPC
1191 * tag (0x00).
1192 */
1193 if (elen < 4) {
1194 elem_parse_failed = true;
1195 break;
1196 }
1197
1198 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1199 pos[2] != 0x96 || pos[3] != 0x00)
1200 break;
1201
1202 if (elen != 6) {
1203 elem_parse_failed = true;
1204 break;
1205 }
1206
1207 if (calc_crc)
1208 crc = crc32_be(crc, pos - 2, elen + 2);
1209
1210 elems->cisco_dtpc_elem = pos;
1211 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001212 case WLAN_EID_TIMEOUT_INTERVAL:
Johannes Berg79ba1d82013-03-27 14:38:07 +01001213 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1214 elems->timeout_int = (void *)pos;
1215 else
1216 elem_parse_failed = true;
Johannes Bergdd769862011-11-18 16:54:50 +01001217 break;
Avraham Sterne38a0172017-04-26 10:58:47 +03001218 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1219 if (elen >= sizeof(*elems->max_idle_period_ie))
1220 elems->max_idle_period_ie = (void *)pos;
1221 break;
Luca Coelho41cbb0f2018-06-09 09:14:44 +03001222 case WLAN_EID_EXTENSION:
1223 if (pos[0] == WLAN_EID_EXT_HE_MU_EDCA &&
1224 elen >= (sizeof(*elems->mu_edca_param_set) + 1)) {
1225 elems->mu_edca_param_set = (void *)&pos[1];
1226 } else if (pos[0] == WLAN_EID_EXT_HE_CAPABILITY) {
1227 elems->he_cap = (void *)&pos[1];
1228 elems->he_cap_len = elen - 1;
1229 } else if (pos[0] == WLAN_EID_EXT_HE_OPERATION &&
1230 elen >= sizeof(*elems->he_operation) &&
1231 elen >= ieee80211_he_oper_size(&pos[1])) {
1232 elems->he_operation = (void *)&pos[1];
1233 } else if (pos[0] == WLAN_EID_EXT_UORA && elen >= 1) {
1234 elems->uora_element = (void *)&pos[1];
1235 }
1236 break;
Johannes Bergdd769862011-11-18 16:54:50 +01001237 default:
1238 break;
1239 }
1240
Paul Stewartfcff4f12012-02-23 17:59:53 -08001241 if (elem_parse_failed)
1242 elems->parse_error = true;
1243 else
Johannes Berg5df45692012-10-24 14:22:37 +02001244 __set_bit(id, seen_elems);
Paul Stewartfcff4f12012-02-23 17:59:53 -08001245
Johannes Bergdd769862011-11-18 16:54:50 +01001246 left -= elen;
1247 pos += elen;
1248 }
1249
Paul Stewartfcff4f12012-02-23 17:59:53 -08001250 if (left != 0)
1251 elems->parse_error = true;
1252
Johannes Bergdd769862011-11-18 16:54:50 +01001253 return crc;
1254}
1255
Haim Dreyfusse552af02018-03-28 13:24:10 +03001256void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1257 struct ieee80211_tx_queue_params
1258 *qparam, int ac)
1259{
1260 struct ieee80211_chanctx_conf *chanctx_conf;
1261 const struct ieee80211_reg_rule *rrule;
Stanislaw Gruszka38cb87e2018-08-22 13:52:21 +02001262 const struct ieee80211_wmm_ac *wmm_ac;
Haim Dreyfusse552af02018-03-28 13:24:10 +03001263 u16 center_freq = 0;
1264
1265 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1266 sdata->vif.type != NL80211_IFTYPE_STATION)
1267 return;
1268
1269 rcu_read_lock();
1270 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1271 if (chanctx_conf)
1272 center_freq = chanctx_conf->def.chan->center_freq;
1273
1274 if (!center_freq) {
1275 rcu_read_unlock();
1276 return;
1277 }
1278
1279 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1280
Stanislaw Gruszka38cb87e2018-08-22 13:52:21 +02001281 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
Haim Dreyfusse552af02018-03-28 13:24:10 +03001282 rcu_read_unlock();
1283 return;
1284 }
1285
1286 if (sdata->vif.type == NL80211_IFTYPE_AP)
Stanislaw Gruszka38cb87e2018-08-22 13:52:21 +02001287 wmm_ac = &rrule->wmm_rule.ap[ac];
Haim Dreyfusse552af02018-03-28 13:24:10 +03001288 else
Stanislaw Gruszka38cb87e2018-08-22 13:52:21 +02001289 wmm_ac = &rrule->wmm_rule.client[ac];
Haim Dreyfusse552af02018-03-28 13:24:10 +03001290 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1291 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1292 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
Dreyfuss, Haimabd76d22018-08-31 11:31:04 +03001293 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
Haim Dreyfusse552af02018-03-28 13:24:10 +03001294 rcu_read_unlock();
1295}
1296
Johannes Berg3abead52012-03-02 15:56:59 +01001297void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
Johannes Bergcec66282015-10-22 17:46:04 +02001298 bool bss_notify, bool enable_qos)
Johannes Berg5825fe102008-09-09 12:56:01 +02001299{
1300 struct ieee80211_local *local = sdata->local;
1301 struct ieee80211_tx_queue_params qparam;
Johannes Berg55de9082012-07-26 17:24:39 +02001302 struct ieee80211_chanctx_conf *chanctx_conf;
Johannes Berg54bcbc62012-03-28 11:04:25 +02001303 int ac;
Johannes Bergcec66282015-10-22 17:46:04 +02001304 bool use_11b;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001305 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
Johannes Bergaa837e12009-05-07 16:16:24 +02001306 int aCWmin, aCWmax;
Johannes Berg5825fe102008-09-09 12:56:01 +02001307
1308 if (!local->ops->conf_tx)
1309 return;
1310
Johannes Berg54bcbc62012-03-28 11:04:25 +02001311 if (local->hw.queues < IEEE80211_NUM_ACS)
1312 return;
1313
Johannes Berg5825fe102008-09-09 12:56:01 +02001314 memset(&qparam, 0, sizeof(qparam));
1315
Johannes Berg55de9082012-07-26 17:24:39 +02001316 rcu_read_lock();
1317 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1318 use_11b = (chanctx_conf &&
Johannes Berg57fbcce2016-04-12 15:56:15 +02001319 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
Johannes Bergaa837e12009-05-07 16:16:24 +02001320 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
Johannes Berg55de9082012-07-26 17:24:39 +02001321 rcu_read_unlock();
Johannes Berg5825fe102008-09-09 12:56:01 +02001322
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001323 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1324
Fred Zhou1f4ffde2013-09-09 23:03:41 +08001325 /* Set defaults according to 802.11-2007 Table 7-37 */
1326 aCWmax = 1023;
1327 if (use_11b)
1328 aCWmin = 31;
1329 else
1330 aCWmin = 15;
Johannes Berg5825fe102008-09-09 12:56:01 +02001331
Fred Zhou1f4ffde2013-09-09 23:03:41 +08001332 /* Confiure old 802.11b/g medium access rules. */
1333 qparam.cw_max = aCWmax;
1334 qparam.cw_min = aCWmin;
1335 qparam.txop = 0;
1336 qparam.aifs = 2;
1337
1338 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1339 /* Update if QoS is enabled. */
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001340 if (enable_qos) {
1341 switch (ac) {
1342 case IEEE80211_AC_BK:
1343 qparam.cw_max = aCWmax;
1344 qparam.cw_min = aCWmin;
1345 qparam.txop = 0;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001346 if (is_ocb)
1347 qparam.aifs = 9;
1348 else
1349 qparam.aifs = 7;
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001350 break;
1351 /* never happens but let's not leave undefined */
1352 default:
1353 case IEEE80211_AC_BE:
1354 qparam.cw_max = aCWmax;
1355 qparam.cw_min = aCWmin;
1356 qparam.txop = 0;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001357 if (is_ocb)
1358 qparam.aifs = 6;
1359 else
1360 qparam.aifs = 3;
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001361 break;
1362 case IEEE80211_AC_VI:
1363 qparam.cw_max = aCWmin;
1364 qparam.cw_min = (aCWmin + 1) / 2 - 1;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001365 if (is_ocb)
1366 qparam.txop = 0;
1367 else if (use_11b)
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001368 qparam.txop = 6016/32;
1369 else
1370 qparam.txop = 3008/32;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001371
1372 if (is_ocb)
1373 qparam.aifs = 3;
1374 else
1375 qparam.aifs = 2;
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001376 break;
1377 case IEEE80211_AC_VO:
1378 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1379 qparam.cw_min = (aCWmin + 1) / 4 - 1;
Rostislav Lisovy239281f2014-11-03 10:33:19 +01001380 if (is_ocb)
1381 qparam.txop = 0;
1382 else if (use_11b)
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001383 qparam.txop = 3264/32;
1384 else
1385 qparam.txop = 1504/32;
1386 qparam.aifs = 2;
1387 break;
1388 }
Johannes Bergaa837e12009-05-07 16:16:24 +02001389 }
Haim Dreyfusse552af02018-03-28 13:24:10 +03001390 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
Johannes Berg5825fe102008-09-09 12:56:01 +02001391
Kalle Valoab133152010-01-12 10:42:31 +02001392 qparam.uapsd = false;
1393
Johannes Berg54bcbc62012-03-28 11:04:25 +02001394 sdata->tx_conf[ac] = qparam;
1395 drv_conf_tx(local, sdata, ac, &qparam);
Johannes Bergaa837e12009-05-07 16:16:24 +02001396 }
Stanislaw Gruszkae1b3ec12010-03-29 12:18:34 +02001397
Johannes Bergf142c6b2012-06-18 20:07:15 +02001398 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
Ayala Beker708d50e2016-09-20 17:31:14 +03001399 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1400 sdata->vif.type != NL80211_IFTYPE_NAN) {
Stanislaw Gruszkaa8ce85442012-05-30 10:56:46 +02001401 sdata->vif.bss_conf.qos = enable_qos;
Johannes Berg3abead52012-03-02 15:56:59 +01001402 if (bss_notify)
1403 ieee80211_bss_info_change_notify(sdata,
1404 BSS_CHANGED_QOS);
Sujithd9734972010-07-23 10:47:11 +05301405 }
Johannes Berg5825fe102008-09-09 12:56:01 +02001406}
Johannes Berge50db652008-09-09 15:07:09 +02001407
Johannes Berg46900292009-02-15 12:44:28 +01001408void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
Jouni Malinen700e8ea2012-09-30 19:29:37 +03001409 u16 transaction, u16 auth_alg, u16 status,
Johannes Berg4a3cb702013-02-12 16:43:19 +01001410 const u8 *extra, size_t extra_len, const u8 *da,
Johannes Berg1672c0e32013-01-29 15:02:27 +01001411 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1412 u32 tx_flags)
Johannes Berg46900292009-02-15 12:44:28 +01001413{
1414 struct ieee80211_local *local = sdata->local;
1415 struct sk_buff *skb;
1416 struct ieee80211_mgmt *mgmt;
Johannes Bergfffd0932009-07-08 14:22:54 +02001417 int err;
Johannes Berg46900292009-02-15 12:44:28 +01001418
Fred Zhou15e230a2013-09-24 10:33:01 +08001419 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
Max Stepanov744462a2014-06-10 20:00:08 +03001420 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1421 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
Joe Perchesd15b8452011-08-29 14:17:31 -07001422 if (!skb)
Johannes Berg46900292009-02-15 12:44:28 +01001423 return;
Joe Perchesd15b8452011-08-29 14:17:31 -07001424
Max Stepanov744462a2014-06-10 20:00:08 +03001425 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
Johannes Berg46900292009-02-15 12:44:28 +01001426
Johannes Bergb080db52017-06-16 14:29:19 +02001427 mgmt = skb_put_zero(skb, 24 + 6);
Johannes Berg46900292009-02-15 12:44:28 +01001428 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1429 IEEE80211_STYPE_AUTH);
Antonio Quartulliefa6a092012-01-09 19:43:06 +01001430 memcpy(mgmt->da, da, ETH_ALEN);
Johannes Berg47846c92009-11-25 17:46:19 +01001431 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
Johannes Berg46900292009-02-15 12:44:28 +01001432 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1433 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1434 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
Jouni Malinen700e8ea2012-09-30 19:29:37 +03001435 mgmt->u.auth.status_code = cpu_to_le16(status);
Johannes Berg46900292009-02-15 12:44:28 +01001436 if (extra)
Johannes Berg59ae1d12017-06-16 14:29:20 +02001437 skb_put_data(skb, extra, extra_len);
Johannes Berg46900292009-02-15 12:44:28 +01001438
Johannes Bergfffd0932009-07-08 14:22:54 +02001439 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1440 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1441 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1442 WARN_ON(err);
1443 }
1444
Johannes Berg1672c0e32013-01-29 15:02:27 +01001445 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1446 tx_flags;
Johannes Berg62ae67b2009-11-18 18:42:05 +01001447 ieee80211_tx_skb(sdata, skb);
Johannes Berg46900292009-02-15 12:44:28 +01001448}
1449
Antonio Quartulli6ae16772012-09-07 13:28:52 +02001450void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1451 const u8 *bssid, u16 stype, u16 reason,
1452 bool send_frame, u8 *frame_buf)
1453{
1454 struct ieee80211_local *local = sdata->local;
1455 struct sk_buff *skb;
1456 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1457
1458 /* build frame */
1459 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1460 mgmt->duration = 0; /* initialize only */
1461 mgmt->seq_ctrl = 0; /* initialize only */
1462 memcpy(mgmt->da, bssid, ETH_ALEN);
1463 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1464 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1465 /* u.deauth.reason_code == u.disassoc.reason_code */
1466 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1467
1468 if (send_frame) {
1469 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1470 IEEE80211_DEAUTH_FRAME_LEN);
1471 if (!skb)
1472 return;
1473
1474 skb_reserve(skb, local->hw.extra_tx_headroom);
1475
1476 /* copy in frame */
Johannes Berg59ae1d12017-06-16 14:29:20 +02001477 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
Antonio Quartulli6ae16772012-09-07 13:28:52 +02001478
1479 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1480 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1481 IEEE80211_SKB_CB(skb)->flags |=
1482 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1483
1484 ieee80211_tx_skb(sdata, skb);
1485 }
1486}
1487
David Spinadelc56ef672014-02-05 15:21:13 +02001488static int ieee80211_build_preq_ies_band(struct ieee80211_local *local,
1489 u8 *buffer, size_t buffer_len,
1490 const u8 *ie, size_t ie_len,
Johannes Berg57fbcce2016-04-12 15:56:15 +02001491 enum nl80211_band band,
David Spinadelc56ef672014-02-05 15:21:13 +02001492 u32 rate_mask,
1493 struct cfg80211_chan_def *chandef,
Johannes Berg00387f32018-05-28 15:47:38 +02001494 size_t *offset, u32 flags)
Johannes Bergde95a542009-04-01 11:58:36 +02001495{
1496 struct ieee80211_supported_band *sband;
Luca Coelho41cbb0f2018-06-09 09:14:44 +03001497 const struct ieee80211_sta_he_cap *he_cap;
Johannes Bergc604b9f2012-11-29 12:45:18 +01001498 u8 *pos = buffer, *end = buffer + buffer_len;
David Spinadelc56ef672014-02-05 15:21:13 +02001499 size_t noffset;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001500 int supp_rates_len, i;
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001501 u8 rates[32];
1502 int num_rates;
1503 int ext_rates_len;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001504 int shift;
1505 u32 rate_flags;
Johannes Berg40a11ca2014-11-24 15:49:44 +01001506 bool have_80mhz = false;
Johannes Bergde95a542009-04-01 11:58:36 +02001507
David Spinadelc56ef672014-02-05 15:21:13 +02001508 *offset = 0;
1509
Johannes Berg4d36ec52009-10-27 20:59:55 +01001510 sband = local->hw.wiphy->bands[band];
Arik Nemtsovd811b3d2012-07-09 19:57:28 +03001511 if (WARN_ON_ONCE(!sband))
1512 return 0;
Johannes Bergde95a542009-04-01 11:58:36 +02001513
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001514 rate_flags = ieee80211_chandef_rate_flags(chandef);
1515 shift = ieee80211_chandef_get_shift(chandef);
1516
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001517 num_rates = 0;
1518 for (i = 0; i < sband->n_bitrates; i++) {
1519 if ((BIT(i) & rate_mask) == 0)
1520 continue; /* skip rate */
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001521 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1522 continue;
1523
1524 rates[num_rates++] =
1525 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1526 (1 << shift) * 5);
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001527 }
1528
1529 supp_rates_len = min_t(int, num_rates, 8);
Johannes Berg8e664fb2009-12-23 13:15:38 +01001530
Johannes Bergc604b9f2012-11-29 12:45:18 +01001531 if (end - pos < 2 + supp_rates_len)
1532 goto out_err;
Johannes Bergde95a542009-04-01 11:58:36 +02001533 *pos++ = WLAN_EID_SUPP_RATES;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001534 *pos++ = supp_rates_len;
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001535 memcpy(pos, rates, supp_rates_len);
1536 pos += supp_rates_len;
Johannes Bergde95a542009-04-01 11:58:36 +02001537
Johannes Berg8e664fb2009-12-23 13:15:38 +01001538 /* insert "request information" if in custom IEs */
1539 if (ie && ie_len) {
1540 static const u8 before_extrates[] = {
1541 WLAN_EID_SSID,
1542 WLAN_EID_SUPP_RATES,
1543 WLAN_EID_REQUEST,
1544 };
1545 noffset = ieee80211_ie_split(ie, ie_len,
1546 before_extrates,
1547 ARRAY_SIZE(before_extrates),
David Spinadelc56ef672014-02-05 15:21:13 +02001548 *offset);
1549 if (end - pos < noffset - *offset)
Johannes Bergc604b9f2012-11-29 12:45:18 +01001550 goto out_err;
David Spinadelc56ef672014-02-05 15:21:13 +02001551 memcpy(pos, ie + *offset, noffset - *offset);
1552 pos += noffset - *offset;
1553 *offset = noffset;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001554 }
Johannes Bergde95a542009-04-01 11:58:36 +02001555
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001556 ext_rates_len = num_rates - supp_rates_len;
1557 if (ext_rates_len > 0) {
Johannes Bergc604b9f2012-11-29 12:45:18 +01001558 if (end - pos < 2 + ext_rates_len)
1559 goto out_err;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001560 *pos++ = WLAN_EID_EXT_SUPP_RATES;
Jouni Malinen8dcb2002010-08-28 19:36:10 +03001561 *pos++ = ext_rates_len;
1562 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1563 pos += ext_rates_len;
Johannes Berg8e664fb2009-12-23 13:15:38 +01001564 }
1565
Johannes Berg57fbcce2016-04-12 15:56:15 +02001566 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
Johannes Bergc604b9f2012-11-29 12:45:18 +01001567 if (end - pos < 3)
1568 goto out_err;
Jouni Malinen651b5222010-08-28 19:37:51 +03001569 *pos++ = WLAN_EID_DS_PARAMS;
1570 *pos++ = 1;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001571 *pos++ = ieee80211_frequency_to_channel(
1572 chandef->chan->center_freq);
Jouni Malinen651b5222010-08-28 19:37:51 +03001573 }
1574
Johannes Bergb9771d42018-05-28 15:47:41 +02001575 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1576 goto done;
1577
Johannes Berg8e664fb2009-12-23 13:15:38 +01001578 /* insert custom IEs that go before HT */
1579 if (ie && ie_len) {
1580 static const u8 before_ht[] = {
Johannes Berga7f26d82017-08-05 11:44:32 +03001581 /*
1582 * no need to list the ones split off already
1583 * (or generated here)
1584 */
Johannes Berg8e664fb2009-12-23 13:15:38 +01001585 WLAN_EID_DS_PARAMS,
1586 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1587 };
1588 noffset = ieee80211_ie_split(ie, ie_len,
1589 before_ht, ARRAY_SIZE(before_ht),
David Spinadelc56ef672014-02-05 15:21:13 +02001590 *offset);
1591 if (end - pos < noffset - *offset)
Johannes Bergc604b9f2012-11-29 12:45:18 +01001592 goto out_err;
David Spinadelc56ef672014-02-05 15:21:13 +02001593 memcpy(pos, ie + *offset, noffset - *offset);
1594 pos += noffset - *offset;
1595 *offset = noffset;
Johannes Bergde95a542009-04-01 11:58:36 +02001596 }
1597
Johannes Bergc604b9f2012-11-29 12:45:18 +01001598 if (sband->ht_cap.ht_supported) {
1599 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1600 goto out_err;
Ben Greearef96a8422011-11-18 11:32:00 -08001601 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1602 sband->ht_cap.cap);
Johannes Bergc604b9f2012-11-29 12:45:18 +01001603 }
Johannes Berg5ef2d412009-03-31 12:12:07 +02001604
Johannes Berg4d952302014-02-04 09:48:34 +01001605 /* insert custom IEs that go before VHT */
Johannes Berg8e664fb2009-12-23 13:15:38 +01001606 if (ie && ie_len) {
Johannes Berg4d952302014-02-04 09:48:34 +01001607 static const u8 before_vht[] = {
Johannes Berga7f26d82017-08-05 11:44:32 +03001608 /*
1609 * no need to list the ones split off already
1610 * (or generated here)
1611 */
Johannes Berg4d952302014-02-04 09:48:34 +01001612 WLAN_EID_BSS_COEX_2040,
1613 WLAN_EID_EXT_CAPABILITY,
1614 WLAN_EID_SSID_LIST,
1615 WLAN_EID_CHANNEL_USAGE,
1616 WLAN_EID_INTERWORKING,
Liad Kaufmanb44eebe2017-08-05 11:44:29 +03001617 WLAN_EID_MESH_ID,
Johannes Berga7f26d82017-08-05 11:44:32 +03001618 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
Johannes Berg4d952302014-02-04 09:48:34 +01001619 };
1620 noffset = ieee80211_ie_split(ie, ie_len,
1621 before_vht, ARRAY_SIZE(before_vht),
David Spinadelc56ef672014-02-05 15:21:13 +02001622 *offset);
1623 if (end - pos < noffset - *offset)
Johannes Bergc604b9f2012-11-29 12:45:18 +01001624 goto out_err;
David Spinadelc56ef672014-02-05 15:21:13 +02001625 memcpy(pos, ie + *offset, noffset - *offset);
1626 pos += noffset - *offset;
1627 *offset = noffset;
Johannes Bergde95a542009-04-01 11:58:36 +02001628 }
1629
Johannes Berg40a11ca2014-11-24 15:49:44 +01001630 /* Check if any channel in this sband supports at least 80 MHz */
1631 for (i = 0; i < sband->n_channels; i++) {
Arik Nemtsovfa44b982015-01-01 13:43:17 +02001632 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1633 IEEE80211_CHAN_NO_80MHZ))
1634 continue;
1635
1636 have_80mhz = true;
1637 break;
Johannes Berg40a11ca2014-11-24 15:49:44 +01001638 }
1639
1640 if (sband->vht_cap.vht_supported && have_80mhz) {
Johannes Bergc604b9f2012-11-29 12:45:18 +01001641 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1642 goto out_err;
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00001643 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1644 sband->vht_cap.cap);
Johannes Bergc604b9f2012-11-29 12:45:18 +01001645 }
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00001646
Luca Coelho41cbb0f2018-06-09 09:14:44 +03001647 /* insert custom IEs that go before HE */
1648 if (ie && ie_len) {
1649 static const u8 before_he[] = {
1650 /*
1651 * no need to list the ones split off before VHT
1652 * or generated here
1653 */
1654 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1655 WLAN_EID_AP_CSN,
1656 /* TODO: add 11ah/11aj/11ak elements */
1657 };
1658 noffset = ieee80211_ie_split(ie, ie_len,
1659 before_he, ARRAY_SIZE(before_he),
1660 *offset);
1661 if (end - pos < noffset - *offset)
1662 goto out_err;
1663 memcpy(pos, ie + *offset, noffset - *offset);
1664 pos += noffset - *offset;
1665 *offset = noffset;
1666 }
1667
1668 he_cap = ieee80211_get_he_sta_cap(sband);
1669 if (he_cap) {
1670 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1671 if (!pos)
1672 goto out_err;
1673 }
1674
1675 /*
1676 * If adding more here, adjust code in main.c
1677 * that calculates local->scan_ies_len.
1678 */
1679
Johannes Bergde95a542009-04-01 11:58:36 +02001680 return pos - buffer;
Johannes Bergc604b9f2012-11-29 12:45:18 +01001681 out_err:
1682 WARN_ONCE(1, "not enough space for preq IEs\n");
Johannes Bergb9771d42018-05-28 15:47:41 +02001683 done:
Johannes Bergc604b9f2012-11-29 12:45:18 +01001684 return pos - buffer;
Johannes Bergde95a542009-04-01 11:58:36 +02001685}
1686
David Spinadelc56ef672014-02-05 15:21:13 +02001687int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1688 size_t buffer_len,
1689 struct ieee80211_scan_ies *ie_desc,
1690 const u8 *ie, size_t ie_len,
1691 u8 bands_used, u32 *rate_masks,
Johannes Berg00387f32018-05-28 15:47:38 +02001692 struct cfg80211_chan_def *chandef,
1693 u32 flags)
David Spinadelc56ef672014-02-05 15:21:13 +02001694{
1695 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1696 int i;
1697
1698 memset(ie_desc, 0, sizeof(*ie_desc));
1699
Johannes Berg57fbcce2016-04-12 15:56:15 +02001700 for (i = 0; i < NUM_NL80211_BANDS; i++) {
David Spinadelc56ef672014-02-05 15:21:13 +02001701 if (bands_used & BIT(i)) {
1702 pos += ieee80211_build_preq_ies_band(local,
1703 buffer + pos,
1704 buffer_len - pos,
1705 ie, ie_len, i,
1706 rate_masks[i],
1707 chandef,
Johannes Berg00387f32018-05-28 15:47:38 +02001708 &custom_ie_offset,
1709 flags);
David Spinadelc56ef672014-02-05 15:21:13 +02001710 ie_desc->ies[i] = buffer + old_pos;
1711 ie_desc->len[i] = pos - old_pos;
1712 old_pos = pos;
1713 }
1714 }
1715
1716 /* add any remaining custom IEs */
1717 if (ie && ie_len) {
1718 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1719 "not enough space for preq custom IEs\n"))
1720 return pos;
1721 memcpy(buffer + pos, ie + custom_ie_offset,
1722 ie_len - custom_ie_offset);
1723 ie_desc->common_ies = buffer + pos;
1724 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1725 pos += ie_len - custom_ie_offset;
1726 }
1727
1728 return pos;
1729};
1730
Juuso Oikarinena619a4c2010-11-11 08:50:18 +02001731struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
Johannes Berga344d672014-06-12 22:24:31 +02001732 const u8 *src, const u8 *dst,
1733 u32 ratemask,
Johannes Berg6b778632012-07-23 14:53:27 +02001734 struct ieee80211_channel *chan,
Juuso Oikarinena619a4c2010-11-11 08:50:18 +02001735 const u8 *ssid, size_t ssid_len,
Paul Stewarta806c552011-06-23 09:00:11 -08001736 const u8 *ie, size_t ie_len,
Johannes Berg00387f32018-05-28 15:47:38 +02001737 u32 flags)
Johannes Berg46900292009-02-15 12:44:28 +01001738{
1739 struct ieee80211_local *local = sdata->local;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001740 struct cfg80211_chan_def chandef;
Johannes Berg46900292009-02-15 12:44:28 +01001741 struct sk_buff *skb;
1742 struct ieee80211_mgmt *mgmt;
Johannes Bergb9a9ada2012-11-29 13:00:10 +01001743 int ies_len;
Johannes Berg57fbcce2016-04-12 15:56:15 +02001744 u32 rate_masks[NUM_NL80211_BANDS] = {};
David Spinadelc56ef672014-02-05 15:21:13 +02001745 struct ieee80211_scan_ies dummy_ie_desc;
Johannes Berg46900292009-02-15 12:44:28 +01001746
Paul Stewarta806c552011-06-23 09:00:11 -08001747 /*
1748 * Do not send DS Channel parameter for directed probe requests
1749 * in order to maximize the chance that we get a response. Some
1750 * badly-behaved APs don't respond when this parameter is included.
1751 */
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001752 chandef.width = sdata->vif.bss_conf.chandef.width;
Johannes Berg00387f32018-05-28 15:47:38 +02001753 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001754 chandef.chan = NULL;
Paul Stewarta806c552011-06-23 09:00:11 -08001755 else
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001756 chandef.chan = chan;
Jouni Malinen651b5222010-08-28 19:37:51 +03001757
Johannes Berga344d672014-06-12 22:24:31 +02001758 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1759 100 + ie_len);
Johannes Berg5b2bbf72011-11-08 13:04:41 +01001760 if (!skb)
Johannes Bergb9a9ada2012-11-29 13:00:10 +01001761 return NULL;
1762
David Spinadelc56ef672014-02-05 15:21:13 +02001763 rate_masks[chan->band] = ratemask;
Johannes Bergb9a9ada2012-11-29 13:00:10 +01001764 ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
David Spinadelc56ef672014-02-05 15:21:13 +02001765 skb_tailroom(skb), &dummy_ie_desc,
1766 ie, ie_len, BIT(chan->band),
Johannes Berg00387f32018-05-28 15:47:38 +02001767 rate_masks, &chandef, flags);
Johannes Bergb9a9ada2012-11-29 13:00:10 +01001768 skb_put(skb, ies_len);
Kalle Valo7c12ce82010-01-05 20:16:44 +02001769
Johannes Berg46900292009-02-15 12:44:28 +01001770 if (dst) {
Kalle Valo7c12ce82010-01-05 20:16:44 +02001771 mgmt = (struct ieee80211_mgmt *) skb->data;
Johannes Berg46900292009-02-15 12:44:28 +01001772 memcpy(mgmt->da, dst, ETH_ALEN);
1773 memcpy(mgmt->bssid, dst, ETH_ALEN);
Johannes Berg46900292009-02-15 12:44:28 +01001774 }
Johannes Berg46900292009-02-15 12:44:28 +01001775
Johannes Berg62ae67b2009-11-18 18:42:05 +01001776 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
Johannes Berg5b2bbf72011-11-08 13:04:41 +01001777
Juuso Oikarinena619a4c2010-11-11 08:50:18 +02001778 return skb;
1779}
1780
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001781u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
Johannes Berg46900292009-02-15 12:44:28 +01001782 struct ieee802_11_elems *elems,
Johannes Berg57fbcce2016-04-12 15:56:15 +02001783 enum nl80211_band band, u32 *basic_rates)
Johannes Berg46900292009-02-15 12:44:28 +01001784{
1785 struct ieee80211_supported_band *sband;
Johannes Berg46900292009-02-15 12:44:28 +01001786 size_t num_rates;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001787 u32 supp_rates, rate_flags;
1788 int i, j, shift;
Mohammed Shafi Shajakhan21a8e9d2017-04-27 12:45:38 +05301789
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001790 sband = sdata->local->hw.wiphy->bands[band];
Mohammed Shafi Shajakhan21a8e9d2017-04-27 12:45:38 +05301791 if (WARN_ON(!sband))
1792 return 1;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001793
1794 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1795 shift = ieee80211_vif_get_shift(&sdata->vif);
Johannes Berg46900292009-02-15 12:44:28 +01001796
Johannes Berg46900292009-02-15 12:44:28 +01001797 num_rates = sband->n_bitrates;
1798 supp_rates = 0;
1799 for (i = 0; i < elems->supp_rates_len +
1800 elems->ext_supp_rates_len; i++) {
1801 u8 rate = 0;
1802 int own_rate;
Ashok Nagarajan9ebb61a2012-04-02 21:21:21 -07001803 bool is_basic;
Johannes Berg46900292009-02-15 12:44:28 +01001804 if (i < elems->supp_rates_len)
1805 rate = elems->supp_rates[i];
1806 else if (elems->ext_supp_rates)
1807 rate = elems->ext_supp_rates
1808 [i - elems->supp_rates_len];
1809 own_rate = 5 * (rate & 0x7f);
Ashok Nagarajan9ebb61a2012-04-02 21:21:21 -07001810 is_basic = !!(rate & 0x80);
1811
1812 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
1813 continue;
1814
1815 for (j = 0; j < num_rates; j++) {
Simon Wunderlich2103dec2013-07-08 16:55:53 +02001816 int brate;
1817 if ((rate_flags & sband->bitrates[j].flags)
1818 != rate_flags)
1819 continue;
1820
1821 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
1822 1 << shift);
1823
1824 if (brate == own_rate) {
Johannes Berg46900292009-02-15 12:44:28 +01001825 supp_rates |= BIT(j);
Ashok Nagarajan9ebb61a2012-04-02 21:21:21 -07001826 if (basic_rates && is_basic)
1827 *basic_rates |= BIT(j);
1828 }
1829 }
Johannes Berg46900292009-02-15 12:44:28 +01001830 }
1831 return supp_rates;
1832}
Johannes Bergf2753dd2009-04-14 10:09:24 +02001833
Johannes Berg84f6a012009-08-20 20:02:20 +02001834void ieee80211_stop_device(struct ieee80211_local *local)
1835{
1836 ieee80211_led_radio(local, false);
Johannes Berg67408c82010-11-30 08:59:23 +01001837 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
Johannes Berg84f6a012009-08-20 20:02:20 +02001838
1839 cancel_work_sync(&local->reconfig_filter);
Johannes Berg84f6a012009-08-20 20:02:20 +02001840
1841 flush_workqueue(local->workqueue);
Lennert Buytenhek678f4152010-01-10 14:07:53 +01001842 drv_stop(local);
Johannes Berg84f6a012009-08-20 20:02:20 +02001843}
1844
Johannes Berg74430f92015-12-08 16:04:38 +02001845static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
1846 bool aborted)
1847{
1848 /* It's possible that we don't handle the scan completion in
1849 * time during suspend, so if it's still marked as completed
1850 * here, queue the work and flush it to clean things up.
1851 * Instead of calling the worker function directly here, we
1852 * really queue it to avoid potential races with other flows
1853 * scheduling the same work.
1854 */
1855 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
1856 /* If coming from reconfiguration failure, abort the scan so
1857 * we don't attempt to continue a partial HW scan - which is
1858 * possible otherwise if (e.g.) the 2.4 GHz portion was the
1859 * completed scan, and a 5 GHz portion is still pending.
1860 */
1861 if (aborted)
1862 set_bit(SCAN_ABORTED, &local->scanning);
1863 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
1864 flush_delayed_work(&local->scan_work);
1865 }
1866}
1867
Johannes Bergf6837ba82014-04-30 14:19:04 +02001868static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
1869{
1870 struct ieee80211_sub_if_data *sdata;
1871 struct ieee80211_chanctx *ctx;
1872
1873 /*
1874 * We get here if during resume the device can't be restarted properly.
1875 * We might also get here if this happens during HW reset, which is a
1876 * slightly different situation and we need to drop all connections in
1877 * the latter case.
1878 *
1879 * Ask cfg80211 to turn off all interfaces, this will result in more
1880 * warnings but at least we'll then get into a clean stopped state.
1881 */
1882
1883 local->resuming = false;
1884 local->suspended = false;
Eliad Peller7584f882015-06-10 20:19:37 +03001885 local->in_reconfig = false;
Johannes Bergf6837ba82014-04-30 14:19:04 +02001886
Johannes Berg74430f92015-12-08 16:04:38 +02001887 ieee80211_flush_completed_scan(local, true);
1888
Johannes Bergf6837ba82014-04-30 14:19:04 +02001889 /* scheduled scan clearly can't be running any more, but tell
1890 * cfg80211 and clear local state
1891 */
1892 ieee80211_sched_scan_end(local);
1893
1894 list_for_each_entry(sdata, &local->interfaces, list)
1895 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
1896
1897 /* Mark channel contexts as not being in the driver any more to avoid
1898 * removing them from the driver during the shutdown process...
1899 */
1900 mutex_lock(&local->chanctx_mtx);
1901 list_for_each_entry(ctx, &local->chanctx_list, list)
1902 ctx->driver_present = false;
1903 mutex_unlock(&local->chanctx_mtx);
1904
1905 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
1906}
1907
Stanislaw Gruszka153a5fc42013-02-28 10:55:30 +01001908static void ieee80211_assign_chanctx(struct ieee80211_local *local,
1909 struct ieee80211_sub_if_data *sdata)
1910{
1911 struct ieee80211_chanctx_conf *conf;
1912 struct ieee80211_chanctx *ctx;
1913
1914 if (!local->use_chanctx)
1915 return;
1916
1917 mutex_lock(&local->chanctx_mtx);
1918 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1919 lockdep_is_held(&local->chanctx_mtx));
1920 if (conf) {
1921 ctx = container_of(conf, struct ieee80211_chanctx, conf);
1922 drv_assign_vif_chanctx(local, sdata, ctx);
1923 }
1924 mutex_unlock(&local->chanctx_mtx);
1925}
1926
Johannes Berg1ea2c862015-12-08 16:04:39 +02001927static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
1928{
1929 struct ieee80211_local *local = sdata->local;
1930 struct sta_info *sta;
1931
1932 /* add STAs back */
1933 mutex_lock(&local->sta_mtx);
1934 list_for_each_entry(sta, &local->sta_list, list) {
1935 enum ieee80211_sta_state state;
1936
1937 if (!sta->uploaded || sta->sdata != sdata)
1938 continue;
1939
1940 for (state = IEEE80211_STA_NOTEXIST;
1941 state < sta->sta_state; state++)
1942 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1943 state + 1));
1944 }
1945 mutex_unlock(&local->sta_mtx);
1946}
1947
Ayala Beker167e33f2016-09-20 17:31:20 +03001948static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
1949{
1950 struct cfg80211_nan_func *func, **funcs;
1951 int res, id, i = 0;
1952
1953 res = drv_start_nan(sdata->local, sdata,
1954 &sdata->u.nan.conf);
1955 if (WARN_ON(res))
1956 return res;
1957
Kees Cook6396bb22018-06-12 14:03:40 -07001958 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
1959 sizeof(*funcs),
1960 GFP_KERNEL);
Ayala Beker167e33f2016-09-20 17:31:20 +03001961 if (!funcs)
1962 return -ENOMEM;
1963
1964 /* Add all the functions:
1965 * This is a little bit ugly. We need to call a potentially sleeping
1966 * callback for each NAN function, so we can't hold the spinlock.
1967 */
1968 spin_lock_bh(&sdata->u.nan.func_lock);
1969
1970 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
1971 funcs[i++] = func;
1972
1973 spin_unlock_bh(&sdata->u.nan.func_lock);
1974
1975 for (i = 0; funcs[i]; i++) {
1976 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
1977 if (WARN_ON(res))
1978 ieee80211_nan_func_terminated(&sdata->vif,
1979 funcs[i]->instance_id,
1980 NL80211_NAN_FUNC_TERM_REASON_ERROR,
1981 GFP_KERNEL);
1982 }
1983
1984 kfree(funcs);
1985
1986 return 0;
1987}
1988
Johannes Bergf2753dd2009-04-14 10:09:24 +02001989int ieee80211_reconfig(struct ieee80211_local *local)
1990{
1991 struct ieee80211_hw *hw = &local->hw;
1992 struct ieee80211_sub_if_data *sdata;
Johannes Berg55de9082012-07-26 17:24:39 +02001993 struct ieee80211_chanctx *ctx;
Johannes Bergf2753dd2009-04-14 10:09:24 +02001994 struct sta_info *sta;
Eliad Peller2683d652011-07-14 20:29:42 +03001995 int res, i;
Johannes Bergd8881302013-01-10 23:55:33 +01001996 bool reconfig_due_to_wowlan = false;
David Spinadeld43c6b62013-12-08 21:48:57 +02001997 struct ieee80211_sub_if_data *sched_scan_sdata;
Johannes Berg6ea0a692014-11-19 11:55:49 +01001998 struct cfg80211_sched_scan_request *sched_scan_req;
David Spinadeld43c6b62013-12-08 21:48:57 +02001999 bool sched_scan_stopped = false;
Eliad Pellerb0485e92015-07-08 15:41:47 +03002000 bool suspended = local->suspended;
Johannes Bergd8881302013-01-10 23:55:33 +01002001
Eliad Peller0f8b8242014-12-14 11:05:53 +02002002 /* nothing to do if HW shouldn't run */
2003 if (!local->open_count)
2004 goto wake_up;
2005
Johannes Berg8f21b0a2013-01-11 00:28:01 +01002006#ifdef CONFIG_PM
Eliad Pellerb0485e92015-07-08 15:41:47 +03002007 if (suspended)
Johannes Bergceb99fe2009-11-19 14:29:39 +01002008 local->resuming = true;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002009
Johannes Bergeecc4802011-05-04 15:37:29 +02002010 if (local->wowlan) {
Eliad Pellerb0485e92015-07-08 15:41:47 +03002011 /*
2012 * In the wowlan case, both mac80211 and the device
2013 * are functional when the resume op is called, so
2014 * clear local->suspended so the device could operate
2015 * normally (e.g. pass rx frames).
2016 */
2017 local->suspended = false;
Johannes Bergeecc4802011-05-04 15:37:29 +02002018 res = drv_resume(local);
Johannes Berg27b3eb92013-08-07 20:11:55 +02002019 local->wowlan = false;
Johannes Bergeecc4802011-05-04 15:37:29 +02002020 if (res < 0) {
2021 local->resuming = false;
2022 return res;
2023 }
2024 if (res == 0)
2025 goto wake_up;
2026 WARN_ON(res > 1);
2027 /*
2028 * res is 1, which means the driver requested
2029 * to go through a regular reset on wakeup.
Eliad Pellerb0485e92015-07-08 15:41:47 +03002030 * restore local->suspended in this case.
Johannes Bergeecc4802011-05-04 15:37:29 +02002031 */
Johannes Bergd8881302013-01-10 23:55:33 +01002032 reconfig_due_to_wowlan = true;
Eliad Pellerb0485e92015-07-08 15:41:47 +03002033 local->suspended = true;
Johannes Bergeecc4802011-05-04 15:37:29 +02002034 }
2035#endif
Johannes Berg94f9b972011-07-14 16:48:54 +02002036
2037 /*
Eliad Peller43d6df02015-10-25 10:59:35 +02002038 * In case of hw_restart during suspend (without wowlan),
2039 * cancel restart work, as we are reconfiguring the device
2040 * anyway.
2041 * Note that restart_work is scheduled on a frozen workqueue,
2042 * so we can't deadlock in this case.
2043 */
2044 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2045 cancel_work_sync(&local->restart_work);
2046
Eliad Peller968a76c2015-10-25 10:59:36 +02002047 local->started = false;
2048
Eliad Peller43d6df02015-10-25 10:59:35 +02002049 /*
Johannes Berg94f9b972011-07-14 16:48:54 +02002050 * Upon resume hardware can sometimes be goofy due to
2051 * various platform / driver / bus issues, so restarting
2052 * the device may at times not work immediately. Propagate
2053 * the error.
2054 */
2055 res = drv_start(local);
2056 if (res) {
Eliad Pellerb0485e92015-07-08 15:41:47 +03002057 if (suspended)
Johannes Bergf6837ba82014-04-30 14:19:04 +02002058 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2059 else
2060 WARN(1, "Hardware became unavailable during restart.\n");
2061 ieee80211_handle_reconfig_failure(local);
Johannes Berg94f9b972011-07-14 16:48:54 +02002062 return res;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002063 }
2064
Yogesh Ashok Powar7f2819752011-12-30 16:34:25 +05302065 /* setup fragmentation threshold */
2066 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2067
2068 /* setup RTS threshold */
2069 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2070
2071 /* reset coverage class */
2072 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2073
Johannes Berg94f9b972011-07-14 16:48:54 +02002074 ieee80211_led_radio(local, true);
2075 ieee80211_mod_tpt_led_trig(local,
2076 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2077
Johannes Bergf2753dd2009-04-14 10:09:24 +02002078 /* add interfaces */
Johannes Berg4b6f1dd2012-04-03 14:35:57 +02002079 sdata = rtnl_dereference(local->monitor_sdata);
2080 if (sdata) {
Johannes Berg3c3e21e2013-03-27 23:20:27 +01002081 /* in HW restart it exists already */
2082 WARN_ON(local->resuming);
Johannes Berg4b6f1dd2012-04-03 14:35:57 +02002083 res = drv_add_interface(local, sdata);
2084 if (WARN_ON(res)) {
Monam Agarwal0c2bef462014-03-24 00:51:43 +05302085 RCU_INIT_POINTER(local->monitor_sdata, NULL);
Johannes Berg4b6f1dd2012-04-03 14:35:57 +02002086 synchronize_net();
2087 kfree(sdata);
2088 }
2089 }
2090
Johannes Bergf2753dd2009-04-14 10:09:24 +02002091 list_for_each_entry(sdata, &local->interfaces, list) {
2092 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2093 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
Luciano Coelhoc8fff3d2015-03-01 09:10:04 +02002094 ieee80211_sdata_running(sdata)) {
Johannes Berg7b7eab62011-11-03 14:41:13 +01002095 res = drv_add_interface(local, sdata);
Luciano Coelhoc8fff3d2015-03-01 09:10:04 +02002096 if (WARN_ON(res))
2097 break;
2098 }
2099 }
2100
2101 /* If adding any of the interfaces failed above, roll back and
2102 * report failure.
2103 */
2104 if (res) {
2105 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2106 list)
2107 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2108 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2109 ieee80211_sdata_running(sdata))
2110 drv_remove_interface(local, sdata);
2111 ieee80211_handle_reconfig_failure(local);
2112 return res;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002113 }
2114
Johannes Berg55de9082012-07-26 17:24:39 +02002115 /* add channel contexts */
Arend van Sprielf0dea9c2012-11-19 12:01:05 +01002116 if (local->use_chanctx) {
2117 mutex_lock(&local->chanctx_mtx);
2118 list_for_each_entry(ctx, &local->chanctx_list, list)
Michal Kazior5bcae312014-06-25 12:35:06 +02002119 if (ctx->replace_state !=
2120 IEEE80211_CHANCTX_REPLACES_OTHER)
2121 WARN_ON(drv_add_chanctx(local, ctx));
Arend van Sprielf0dea9c2012-11-19 12:01:05 +01002122 mutex_unlock(&local->chanctx_mtx);
Johannes Berg55de9082012-07-26 17:24:39 +02002123
Zhao, Gang7df180f2014-04-26 09:43:40 +08002124 sdata = rtnl_dereference(local->monitor_sdata);
2125 if (sdata && ieee80211_sdata_running(sdata))
2126 ieee80211_assign_chanctx(local, sdata);
2127 }
Johannes Bergfe5f2552012-11-19 22:19:08 +01002128
Johannes Bergf2753dd2009-04-14 10:09:24 +02002129 /* reconfigure hardware */
2130 ieee80211_hw_config(local, ~0);
2131
Johannes Bergf2753dd2009-04-14 10:09:24 +02002132 ieee80211_configure_filter(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +02002133
2134 /* Finally also reconfigure all the BSS information */
2135 list_for_each_entry(sdata, &local->interfaces, list) {
Johannes Bergac8dd502010-05-05 09:44:02 +02002136 u32 changed;
2137
Johannes Berg9607e6b662009-12-23 13:15:31 +01002138 if (!ieee80211_sdata_running(sdata))
Johannes Bergf2753dd2009-04-14 10:09:24 +02002139 continue;
Johannes Bergac8dd502010-05-05 09:44:02 +02002140
Johannes Berg1ea2c862015-12-08 16:04:39 +02002141 ieee80211_assign_chanctx(local, sdata);
2142
2143 switch (sdata->vif.type) {
2144 case NL80211_IFTYPE_AP_VLAN:
2145 case NL80211_IFTYPE_MONITOR:
2146 break;
2147 default:
2148 ieee80211_reconfig_stations(sdata);
2149 /* fall through */
2150 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2151 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2152 drv_conf_tx(local, sdata, i,
2153 &sdata->tx_conf[i]);
2154 break;
2155 }
2156
Johannes Bergac8dd502010-05-05 09:44:02 +02002157 /* common change flags for all interface types */
2158 changed = BSS_CHANGED_ERP_CTS_PROT |
2159 BSS_CHANGED_ERP_PREAMBLE |
2160 BSS_CHANGED_ERP_SLOT |
2161 BSS_CHANGED_HT |
2162 BSS_CHANGED_BASIC_RATES |
2163 BSS_CHANGED_BEACON_INT |
2164 BSS_CHANGED_BSSID |
Johannes Berg4ced3f72010-07-19 16:39:04 +02002165 BSS_CHANGED_CQM |
Eliad Peller55de47f2011-11-01 15:16:55 +02002166 BSS_CHANGED_QOS |
Johannes Berg1ea6f9c2012-10-24 10:59:25 +02002167 BSS_CHANGED_IDLE |
Pradeep Kumar Chitrapudcbe73c2018-03-22 12:18:03 -07002168 BSS_CHANGED_TXPOWER |
2169 BSS_CHANGED_MCAST_RATE;
Johannes Bergac8dd502010-05-05 09:44:02 +02002170
Sara Sharonb5a33d52016-02-16 12:48:18 +02002171 if (sdata->vif.mu_mimo_owner)
Sara Sharon23a1f8d2015-12-08 16:04:31 +02002172 changed |= BSS_CHANGED_MU_GROUPS;
2173
Johannes Bergf2753dd2009-04-14 10:09:24 +02002174 switch (sdata->vif.type) {
2175 case NL80211_IFTYPE_STATION:
Eliad Peller0d392e92011-12-12 14:10:49 +02002176 changed |= BSS_CHANGED_ASSOC |
Eliad Pellerab095872012-07-27 12:33:22 +03002177 BSS_CHANGED_ARP_FILTER |
2178 BSS_CHANGED_PS;
Emmanuel Grumbachc65dd142012-12-12 10:12:24 +02002179
Alexander Bondar989c6502013-05-16 17:34:17 +03002180 /* Re-send beacon info report to the driver */
2181 if (sdata->u.mgd.have_beacon)
2182 changed |= BSS_CHANGED_BEACON_INFO;
Emmanuel Grumbachc65dd142012-12-12 10:12:24 +02002183
Avraham Sterne38a0172017-04-26 10:58:47 +03002184 if (sdata->vif.bss_conf.max_idle_period ||
2185 sdata->vif.bss_conf.protected_keep_alive)
2186 changed |= BSS_CHANGED_KEEP_ALIVE;
2187
Johannes Berg8d61ffa2013-05-10 12:32:47 +02002188 sdata_lock(sdata);
Johannes Bergac8dd502010-05-05 09:44:02 +02002189 ieee80211_bss_info_change_notify(sdata, changed);
Johannes Berg8d61ffa2013-05-10 12:32:47 +02002190 sdata_unlock(sdata);
Johannes Bergac8dd502010-05-05 09:44:02 +02002191 break;
Rostislav Lisovy6e0bd6c2014-11-03 10:33:18 +01002192 case NL80211_IFTYPE_OCB:
Rostislav Lisovy239281f2014-11-03 10:33:19 +01002193 changed |= BSS_CHANGED_OCB;
2194 ieee80211_bss_info_change_notify(sdata, changed);
Rostislav Lisovy6e0bd6c2014-11-03 10:33:18 +01002195 break;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002196 case NL80211_IFTYPE_ADHOC:
Johannes Bergac8dd502010-05-05 09:44:02 +02002197 changed |= BSS_CHANGED_IBSS;
2198 /* fall through */
Johannes Bergf2753dd2009-04-14 10:09:24 +02002199 case NL80211_IFTYPE_AP:
Johannes Berg339afbf2012-11-14 15:21:17 +01002200 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
Arik Nemtsove7979ac2011-11-22 19:33:18 +02002201
Pradeep Kumar Chitrapubc847972018-10-03 20:19:20 -07002202 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2203 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2204 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2205 changed |= BSS_CHANGED_FTM_RESPONDER;
2206
Johannes Berg10416382012-10-19 15:44:42 +02002207 if (sdata->vif.type == NL80211_IFTYPE_AP) {
Arik Nemtsove7979ac2011-11-22 19:33:18 +02002208 changed |= BSS_CHANGED_AP_PROBE_RESP;
2209
Johannes Berg10416382012-10-19 15:44:42 +02002210 if (rcu_access_pointer(sdata->u.ap.beacon))
2211 drv_start_ap(local, sdata);
2212 }
2213
Arik Nemtsov78274932011-09-04 11:11:32 +03002214 /* fall through */
Johannes Bergf2753dd2009-04-14 10:09:24 +02002215 case NL80211_IFTYPE_MESH_POINT:
Johannes Berg8da34932012-12-14 14:17:26 +01002216 if (sdata->vif.bss_conf.enable_beacon) {
2217 changed |= BSS_CHANGED_BEACON |
2218 BSS_CHANGED_BEACON_ENABLED;
2219 ieee80211_bss_info_change_notify(sdata, changed);
2220 }
Johannes Bergf2753dd2009-04-14 10:09:24 +02002221 break;
Ayala Beker167e33f2016-09-20 17:31:20 +03002222 case NL80211_IFTYPE_NAN:
2223 res = ieee80211_reconfig_nan(sdata);
2224 if (res < 0) {
2225 ieee80211_handle_reconfig_failure(local);
2226 return res;
2227 }
2228 break;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002229 case NL80211_IFTYPE_WDS:
Johannes Bergf2753dd2009-04-14 10:09:24 +02002230 case NL80211_IFTYPE_AP_VLAN:
2231 case NL80211_IFTYPE_MONITOR:
Johannes Berg98104fde2012-06-16 00:19:54 +02002232 case NL80211_IFTYPE_P2P_DEVICE:
Zhao, Gangb2057862014-04-26 09:43:41 +08002233 /* nothing to do */
Johannes Bergf142c6b2012-06-18 20:07:15 +02002234 break;
Johannes Bergf2753dd2009-04-14 10:09:24 +02002235 case NL80211_IFTYPE_UNSPECIFIED:
Johannes Berg2e161f782010-08-12 15:38:38 +02002236 case NUM_NL80211_IFTYPES:
Johannes Berg2ca27bc2010-09-16 14:58:23 +02002237 case NL80211_IFTYPE_P2P_CLIENT:
2238 case NL80211_IFTYPE_P2P_GO:
Johannes Bergf2753dd2009-04-14 10:09:24 +02002239 WARN_ON(1);
2240 break;
2241 }
2242 }
2243
Johannes Berg4a733ef2015-10-14 18:02:43 +02002244 ieee80211_recalc_ps(local);
Eyal Shapira8e1b23b2011-11-09 12:29:06 +02002245
Johannes Berg2a419052010-06-10 10:21:29 +02002246 /*
Eliad Peller6e1b1b22012-01-26 13:36:05 +02002247 * The sta might be in psm against the ap (e.g. because
2248 * this was the state before a hw restart), so we
2249 * explicitly send a null packet in order to make sure
2250 * it'll sync against the ap (and get out of psm).
2251 */
2252 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2253 list_for_each_entry(sdata, &local->interfaces, list) {
2254 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2255 continue;
Johannes Berg20f544e2012-11-08 14:06:28 +01002256 if (!sdata->u.mgd.associated)
2257 continue;
Eliad Peller6e1b1b22012-01-26 13:36:05 +02002258
Johannes Berg076cdcb2015-09-24 16:14:55 +02002259 ieee80211_send_nullfunc(local, sdata, false);
Eliad Peller6e1b1b22012-01-26 13:36:05 +02002260 }
2261 }
2262
Arik Nemtsov2e8d3972012-06-03 23:31:56 +03002263 /* APs are now beaconing, add back stations */
2264 mutex_lock(&local->sta_mtx);
2265 list_for_each_entry(sta, &local->sta_list, list) {
2266 enum ieee80211_sta_state state;
2267
2268 if (!sta->uploaded)
2269 continue;
2270
mpubbise@codeaurora.org19103a42018-07-02 15:40:14 +05302271 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2272 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
Arik Nemtsov2e8d3972012-06-03 23:31:56 +03002273 continue;
2274
2275 for (state = IEEE80211_STA_NOTEXIST;
2276 state < sta->sta_state; state++)
2277 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2278 state + 1));
2279 }
2280 mutex_unlock(&local->sta_mtx);
2281
Eyal Shapira7b21aea2012-05-29 02:00:22 -07002282 /* add back keys */
2283 list_for_each_entry(sdata, &local->interfaces, list)
Michal Kaziorf9dca802015-05-13 09:16:48 +00002284 ieee80211_reset_crypto_tx_tailroom(sdata);
2285
2286 list_for_each_entry(sdata, &local->interfaces, list)
Eyal Shapira7b21aea2012-05-29 02:00:22 -07002287 if (ieee80211_sdata_running(sdata))
2288 ieee80211_enable_keys(sdata);
2289
Eliad Peller0d440ea2015-10-25 10:59:33 +02002290 /* Reconfigure sched scan if it was interrupted by FW restart */
2291 mutex_lock(&local->mtx);
2292 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2293 lockdep_is_held(&local->mtx));
2294 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2295 lockdep_is_held(&local->mtx));
2296 if (sched_scan_sdata && sched_scan_req)
2297 /*
2298 * Sched scan stopped, but we don't want to report it. Instead,
2299 * we're trying to reschedule. However, if more than one scan
2300 * plan was set, we cannot reschedule since we don't know which
2301 * scan plan was currently running (and some scan plans may have
2302 * already finished).
2303 */
2304 if (sched_scan_req->n_scan_plans > 1 ||
2305 __ieee80211_request_sched_scan_start(sched_scan_sdata,
Eliad Pellerb9f628f2015-12-16 15:45:45 +02002306 sched_scan_req)) {
2307 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2308 RCU_INIT_POINTER(local->sched_scan_req, NULL);
Eliad Peller0d440ea2015-10-25 10:59:33 +02002309 sched_scan_stopped = true;
Eliad Pellerb9f628f2015-12-16 15:45:45 +02002310 }
Eliad Peller0d440ea2015-10-25 10:59:33 +02002311 mutex_unlock(&local->mtx);
2312
2313 if (sched_scan_stopped)
Arend Van Sprielb34939b2017-04-28 13:40:28 +01002314 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
Eliad Peller0d440ea2015-10-25 10:59:33 +02002315
Eliad Pellerc6209482012-07-02 15:08:25 +03002316 wake_up:
Arik Nemtsov04800ad2012-06-06 11:25:02 +03002317
Johannes Berg3c3e21e2013-03-27 23:20:27 +01002318 if (local->monitors == local->open_count && local->monitors > 0)
2319 ieee80211_add_virtual_monitor(local);
2320
Eliad Peller6e1b1b22012-01-26 13:36:05 +02002321 /*
Johannes Berg2a419052010-06-10 10:21:29 +02002322 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2323 * sessions can be established after a resume.
2324 *
2325 * Also tear down aggregation sessions since reconfiguring
2326 * them in a hardware restart scenario is not easily done
2327 * right now, and the hardware will have lost information
2328 * about the sessions, but we and the AP still think they
2329 * are active. This is really a workaround though.
2330 */
Johannes Berg30686bf2015-06-02 21:39:54 +02002331 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
Johannes Berg2a419052010-06-10 10:21:29 +02002332 mutex_lock(&local->sta_mtx);
2333
2334 list_for_each_entry(sta, &local->sta_list, list) {
Eliad Peller27392712015-09-21 15:50:26 +03002335 if (!local->resuming)
2336 ieee80211_sta_tear_down_BA_sessions(
2337 sta, AGG_STOP_LOCAL_REQUEST);
Johannes Bergc2c98fd2011-09-29 16:04:36 +02002338 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
Wey-Yi Guy74e2bd12010-02-03 09:28:55 -08002339 }
Johannes Berg2a419052010-06-10 10:21:29 +02002340
2341 mutex_unlock(&local->sta_mtx);
Wey-Yi Guy74e2bd12010-02-03 09:28:55 -08002342 }
Wey-Yi Guy74e2bd12010-02-03 09:28:55 -08002343
Sara Sharon23163802017-10-29 11:51:08 +02002344 if (local->in_reconfig) {
2345 local->in_reconfig = false;
2346 barrier();
2347
2348 /* Restart deferred ROCs */
2349 mutex_lock(&local->mtx);
2350 ieee80211_start_next_roc(local);
2351 mutex_unlock(&local->mtx);
2352 }
2353
Johannes Berg445ea4e2013-02-13 12:25:28 +01002354 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +03002355 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2356 false);
Johannes Bergf2753dd2009-04-14 10:09:24 +02002357
Johannes Berg5bb644a2009-05-17 11:40:42 +02002358 /*
2359 * If this is for hw restart things are still running.
2360 * We may want to change that later, however.
2361 */
Eliad Pellerb0485e92015-07-08 15:41:47 +03002362 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
Eliad Pellercf2c92d2014-11-04 11:43:54 +02002363 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
Johannes Berg8f21b0a2013-01-11 00:28:01 +01002364
Eliad Pellerb0485e92015-07-08 15:41:47 +03002365 if (!suspended)
Johannes Berg5bb644a2009-05-17 11:40:42 +02002366 return 0;
2367
2368#ifdef CONFIG_PM
Johannes Bergceb99fe2009-11-19 14:29:39 +01002369 /* first set suspended false, then resuming */
Johannes Berg5bb644a2009-05-17 11:40:42 +02002370 local->suspended = false;
Johannes Bergceb99fe2009-11-19 14:29:39 +01002371 mb();
2372 local->resuming = false;
Johannes Berg5bb644a2009-05-17 11:40:42 +02002373
Johannes Berg74430f92015-12-08 16:04:38 +02002374 ieee80211_flush_completed_scan(local, false);
Luciano Coelho9120d94e2015-01-24 10:30:02 +02002375
Eliad Peller0f8b8242014-12-14 11:05:53 +02002376 if (local->open_count && !reconfig_due_to_wowlan)
Eliad Pellercf2c92d2014-11-04 11:43:54 +02002377 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2378
Johannes Bergb8360ab2013-04-29 14:57:44 +02002379 list_for_each_entry(sdata, &local->interfaces, list) {
2380 if (!ieee80211_sdata_running(sdata))
2381 continue;
2382 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2383 ieee80211_sta_restart(sdata);
2384 }
2385
Johannes Berg26d59532011-04-01 13:52:48 +02002386 mod_timer(&local->sta_cleanup, jiffies + 1);
Johannes Berg5bb644a2009-05-17 11:40:42 +02002387#else
2388 WARN_ON(1);
2389#endif
David Spinadeld43c6b62013-12-08 21:48:57 +02002390
Johannes Bergf2753dd2009-04-14 10:09:24 +02002391 return 0;
2392}
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04002393
Johannes Berg95acac62011-07-12 12:30:59 +02002394void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2395{
2396 struct ieee80211_sub_if_data *sdata;
2397 struct ieee80211_local *local;
2398 struct ieee80211_key *key;
2399
2400 if (WARN_ON(!vif))
2401 return;
2402
2403 sdata = vif_to_sdata(vif);
2404 local = sdata->local;
2405
2406 if (WARN_ON(!local->resuming))
2407 return;
2408
2409 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2410 return;
2411
2412 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2413
2414 mutex_lock(&local->key_mtx);
2415 list_for_each_entry(key, &sdata->key_list, list)
2416 key->flags |= KEY_FLAG_TAINTED;
2417 mutex_unlock(&local->key_mtx);
2418}
2419EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2420
Johannes Berg04ecd252012-09-11 14:34:12 +02002421void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
Johannes Berg0f782312009-12-01 13:37:02 +01002422{
Johannes Berg04ecd252012-09-11 14:34:12 +02002423 struct ieee80211_local *local = sdata->local;
2424 struct ieee80211_chanctx_conf *chanctx_conf;
2425 struct ieee80211_chanctx *chanctx;
Johannes Berg0f782312009-12-01 13:37:02 +01002426
Johannes Berg04ecd252012-09-11 14:34:12 +02002427 mutex_lock(&local->chanctx_mtx);
Johannes Berg0f782312009-12-01 13:37:02 +01002428
Johannes Berg04ecd252012-09-11 14:34:12 +02002429 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2430 lockdep_is_held(&local->chanctx_mtx));
Johannes Berg0f782312009-12-01 13:37:02 +01002431
Andrei Otcheretianskic189a682015-10-25 10:59:40 +02002432 /*
2433 * This function can be called from a work, thus it may be possible
2434 * that the chanctx_conf is removed (due to a disconnection, for
2435 * example).
2436 * So nothing should be done in such case.
2437 */
2438 if (!chanctx_conf)
Johannes Berg5d8e4232012-09-11 10:17:11 +02002439 goto unlock;
Johannes Berg0f782312009-12-01 13:37:02 +01002440
Johannes Berg04ecd252012-09-11 14:34:12 +02002441 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2442 ieee80211_recalc_smps_chanctx(local, chanctx);
Johannes Berg5d8e4232012-09-11 10:17:11 +02002443 unlock:
Johannes Berg04ecd252012-09-11 14:34:12 +02002444 mutex_unlock(&local->chanctx_mtx);
Johannes Berg0f782312009-12-01 13:37:02 +01002445}
Johannes Berg8e664fb2009-12-23 13:15:38 +01002446
Eliad Peller21f659b2013-11-11 20:14:01 +02002447void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2448{
2449 struct ieee80211_local *local = sdata->local;
2450 struct ieee80211_chanctx_conf *chanctx_conf;
2451 struct ieee80211_chanctx *chanctx;
2452
2453 mutex_lock(&local->chanctx_mtx);
2454
2455 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2456 lockdep_is_held(&local->chanctx_mtx));
2457
2458 if (WARN_ON_ONCE(!chanctx_conf))
2459 goto unlock;
2460
2461 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2462 ieee80211_recalc_chanctx_min_def(local, chanctx);
2463 unlock:
2464 mutex_unlock(&local->chanctx_mtx);
2465}
2466
Johannes Berg8e664fb2009-12-23 13:15:38 +01002467size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2468{
2469 size_t pos = offset;
2470
2471 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2472 pos += 2 + ies[pos + 1];
2473
2474 return pos;
2475}
Meenakshi Venkataraman615f7b92011-07-08 08:46:22 -07002476
2477static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2478 int rssi_min_thold,
2479 int rssi_max_thold)
2480{
2481 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2482
2483 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2484 return;
2485
2486 /*
2487 * Scale up threshold values before storing it, as the RSSI averaging
2488 * algorithm uses a scaled up value as well. Change this scaling
2489 * factor if the RSSI averaging algorithm changes.
2490 */
2491 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2492 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2493}
2494
2495void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2496 int rssi_min_thold,
2497 int rssi_max_thold)
2498{
2499 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2500
2501 WARN_ON(rssi_min_thold == rssi_max_thold ||
2502 rssi_min_thold > rssi_max_thold);
2503
2504 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2505 rssi_max_thold);
2506}
2507EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2508
2509void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2510{
2511 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2512
2513 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2514}
2515EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
Arik Nemtsov768db3432011-09-28 14:12:51 +03002516
Ben Greearef96a8422011-11-18 11:32:00 -08002517u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
Alexander Simon42e7aa72011-10-26 14:47:26 -07002518 u16 cap)
2519{
2520 __le16 tmp;
2521
2522 *pos++ = WLAN_EID_HT_CAPABILITY;
2523 *pos++ = sizeof(struct ieee80211_ht_cap);
2524 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2525
2526 /* capability flags */
2527 tmp = cpu_to_le16(cap);
2528 memcpy(pos, &tmp, sizeof(u16));
2529 pos += sizeof(u16);
2530
2531 /* AMPDU parameters */
Ben Greearef96a8422011-11-18 11:32:00 -08002532 *pos++ = ht_cap->ampdu_factor |
2533 (ht_cap->ampdu_density <<
Alexander Simon42e7aa72011-10-26 14:47:26 -07002534 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2535
2536 /* MCS set */
Ben Greearef96a8422011-11-18 11:32:00 -08002537 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2538 pos += sizeof(ht_cap->mcs);
Alexander Simon42e7aa72011-10-26 14:47:26 -07002539
2540 /* extended capabilities */
2541 pos += sizeof(__le16);
2542
2543 /* BF capabilities */
2544 pos += sizeof(__le32);
2545
2546 /* antenna selection */
2547 pos += sizeof(u8);
2548
2549 return pos;
2550}
2551
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00002552u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
Johannes Bergcc3983d2012-12-07 12:45:06 +01002553 u32 cap)
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00002554{
2555 __le32 tmp;
2556
2557 *pos++ = WLAN_EID_VHT_CAPABILITY;
Mahesh Palivelad4950282012-10-10 11:25:40 +00002558 *pos++ = sizeof(struct ieee80211_vht_cap);
2559 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
Mahesh Palivelaba0afa22012-07-02 11:25:12 +00002560
2561 /* capability flags */
2562 tmp = cpu_to_le32(cap);
2563 memcpy(pos, &tmp, sizeof(u32));
2564 pos += sizeof(u32);
2565
2566 /* VHT MCS set */
2567 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2568 pos += sizeof(vht_cap->vht_mcs);
2569
2570 return pos;
2571}
2572
Luca Coelho41cbb0f2018-06-09 09:14:44 +03002573u8 *ieee80211_ie_build_he_cap(u8 *pos,
2574 const struct ieee80211_sta_he_cap *he_cap,
2575 u8 *end)
2576{
2577 u8 n;
2578 u8 ie_len;
2579 u8 *orig_pos = pos;
2580
2581 /* Make sure we have place for the IE */
2582 /*
2583 * TODO: the 1 added is because this temporarily is under the EXTENSION
2584 * IE. Get rid of it when it moves.
2585 */
2586 if (!he_cap)
2587 return orig_pos;
2588
2589 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2590 ie_len = 2 + 1 +
2591 sizeof(he_cap->he_cap_elem) + n +
2592 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2593 he_cap->he_cap_elem.phy_cap_info);
2594
2595 if ((end - pos) < ie_len)
2596 return orig_pos;
2597
2598 *pos++ = WLAN_EID_EXTENSION;
2599 pos++; /* We'll set the size later below */
2600 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2601
2602 /* Fixed data */
2603 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2604 pos += sizeof(he_cap->he_cap_elem);
2605
2606 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2607 pos += n;
2608
2609 /* Check if PPE Threshold should be present */
2610 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2611 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2612 goto end;
2613
2614 /*
2615 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2616 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2617 */
2618 n = hweight8(he_cap->ppe_thres[0] &
2619 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2620 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2621 IEEE80211_PPE_THRES_NSS_POS));
2622
2623 /*
2624 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2625 * total size.
2626 */
2627 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2628 n = DIV_ROUND_UP(n, 8);
2629
2630 /* Copy PPE Thresholds */
2631 memcpy(pos, &he_cap->ppe_thres, n);
2632 pos += n;
2633
2634end:
2635 orig_pos[1] = (pos - orig_pos) - 2;
2636 return pos;
2637}
2638
Johannes Berg074d46d2012-03-15 19:45:16 +01002639u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
Johannes Berg4bf88532012-11-09 11:39:59 +01002640 const struct cfg80211_chan_def *chandef,
Arik Nemtsov57f255f2015-10-25 10:59:34 +02002641 u16 prot_mode, bool rifs_mode)
Alexander Simon42e7aa72011-10-26 14:47:26 -07002642{
Johannes Berg074d46d2012-03-15 19:45:16 +01002643 struct ieee80211_ht_operation *ht_oper;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002644 /* Build HT Information */
Johannes Berg074d46d2012-03-15 19:45:16 +01002645 *pos++ = WLAN_EID_HT_OPERATION;
2646 *pos++ = sizeof(struct ieee80211_ht_operation);
2647 ht_oper = (struct ieee80211_ht_operation *)pos;
Johannes Berg4bf88532012-11-09 11:39:59 +01002648 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2649 chandef->chan->center_freq);
2650 switch (chandef->width) {
2651 case NL80211_CHAN_WIDTH_160:
2652 case NL80211_CHAN_WIDTH_80P80:
2653 case NL80211_CHAN_WIDTH_80:
2654 case NL80211_CHAN_WIDTH_40:
2655 if (chandef->center_freq1 > chandef->chan->center_freq)
2656 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2657 else
2658 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002659 break;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002660 default:
Johannes Berg074d46d2012-03-15 19:45:16 +01002661 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002662 break;
2663 }
Thomas Pedersenaee286c2012-04-18 19:24:14 -07002664 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
Johannes Berg4bf88532012-11-09 11:39:59 +01002665 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2666 chandef->width != NL80211_CHAN_WIDTH_20)
Johannes Berg074d46d2012-03-15 19:45:16 +01002667 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
Simon Wunderlichff3cc5f2011-11-30 16:56:33 +01002668
Arik Nemtsov57f255f2015-10-25 10:59:34 +02002669 if (rifs_mode)
2670 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2671
Ashok Nagarajan431e3152012-04-30 14:20:29 -07002672 ht_oper->operation_mode = cpu_to_le16(prot_mode);
Johannes Berg074d46d2012-03-15 19:45:16 +01002673 ht_oper->stbc_param = 0x0000;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002674
2675 /* It seems that Basic MCS set and Supported MCS set
2676 are identical for the first 10 bytes */
Johannes Berg074d46d2012-03-15 19:45:16 +01002677 memset(&ht_oper->basic_set, 0, 16);
2678 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
Alexander Simon42e7aa72011-10-26 14:47:26 -07002679
Johannes Berg074d46d2012-03-15 19:45:16 +01002680 return pos + sizeof(struct ieee80211_ht_operation);
Alexander Simon42e7aa72011-10-26 14:47:26 -07002681}
2682
Simon Wunderlich75d627d2017-05-23 17:00:42 +02002683void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2684 const struct cfg80211_chan_def *chandef)
2685{
2686 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
2687 *pos++ = 3; /* IE length */
2688 /* New channel width */
2689 switch (chandef->width) {
2690 case NL80211_CHAN_WIDTH_80:
2691 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
2692 break;
2693 case NL80211_CHAN_WIDTH_160:
2694 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
2695 break;
2696 case NL80211_CHAN_WIDTH_80P80:
2697 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2698 break;
2699 default:
2700 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
2701 }
2702
2703 /* new center frequency segment 0 */
2704 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
2705 /* new center frequency segment 1 */
2706 if (chandef->center_freq2)
2707 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
2708 else
2709 *pos++ = 0;
2710}
2711
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002712u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2713 const struct cfg80211_chan_def *chandef)
2714{
2715 struct ieee80211_vht_operation *vht_oper;
2716
2717 *pos++ = WLAN_EID_VHT_OPERATION;
2718 *pos++ = sizeof(struct ieee80211_vht_operation);
2719 vht_oper = (struct ieee80211_vht_operation *)pos;
Johannes Berg2fb51c32017-02-15 15:02:06 +01002720 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002721 chandef->center_freq1);
2722 if (chandef->center_freq2)
Johannes Berg2fb51c32017-02-15 15:02:06 +01002723 vht_oper->center_freq_seg1_idx =
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002724 ieee80211_frequency_to_channel(chandef->center_freq2);
Chun-Yeow Yeohf020ae42015-09-04 10:58:05 +08002725 else
Johannes Berg2fb51c32017-02-15 15:02:06 +01002726 vht_oper->center_freq_seg1_idx = 0x00;
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002727
2728 switch (chandef->width) {
2729 case NL80211_CHAN_WIDTH_160:
Jouni Malinen23665aa2016-02-01 11:40:55 +02002730 /*
2731 * Convert 160 MHz channel width to new style as interop
2732 * workaround.
2733 */
2734 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
Johannes Berg2fb51c32017-02-15 15:02:06 +01002735 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002736 if (chandef->chan->center_freq < chandef->center_freq1)
Johannes Berg2fb51c32017-02-15 15:02:06 +01002737 vht_oper->center_freq_seg0_idx -= 8;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002738 else
Johannes Berg2fb51c32017-02-15 15:02:06 +01002739 vht_oper->center_freq_seg0_idx += 8;
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002740 break;
2741 case NL80211_CHAN_WIDTH_80P80:
Jouni Malinen23665aa2016-02-01 11:40:55 +02002742 /*
2743 * Convert 80+80 MHz channel width to new style as interop
2744 * workaround.
2745 */
2746 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
Arik Nemtsovfb28ec02015-03-01 09:10:02 +02002747 break;
2748 case NL80211_CHAN_WIDTH_80:
2749 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2750 break;
2751 default:
2752 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2753 break;
2754 }
2755
2756 /* don't require special VHT peer rates */
2757 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2758
2759 return pos + sizeof(struct ieee80211_vht_operation);
2760}
2761
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002762bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2763 struct cfg80211_chan_def *chandef)
Alexander Simon42e7aa72011-10-26 14:47:26 -07002764{
2765 enum nl80211_channel_type channel_type;
2766
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002767 if (!ht_oper)
2768 return false;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002769
Johannes Berg074d46d2012-03-15 19:45:16 +01002770 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
Alexander Simon42e7aa72011-10-26 14:47:26 -07002771 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2772 channel_type = NL80211_CHAN_HT20;
2773 break;
2774 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2775 channel_type = NL80211_CHAN_HT40PLUS;
2776 break;
2777 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2778 channel_type = NL80211_CHAN_HT40MINUS;
2779 break;
2780 default:
2781 channel_type = NL80211_CHAN_NO_HT;
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002782 return false;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002783 }
2784
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002785 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
2786 return true;
Alexander Simon42e7aa72011-10-26 14:47:26 -07002787}
2788
Johannes Berg7eb26df2018-08-31 11:31:18 +03002789bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw,
2790 const struct ieee80211_vht_operation *oper,
2791 const struct ieee80211_ht_operation *htop,
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002792 struct cfg80211_chan_def *chandef)
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002793{
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002794 struct cfg80211_chan_def new = *chandef;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002795 int cf0, cf1;
2796 int ccfs0, ccfs1, ccfs2;
2797 int ccf0, ccf1;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002798
Johannes Berg7eb26df2018-08-31 11:31:18 +03002799 if (!oper || !htop)
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002800 return false;
2801
Johannes Berg7eb26df2018-08-31 11:31:18 +03002802 ccfs0 = oper->center_freq_seg0_idx;
2803 ccfs1 = oper->center_freq_seg1_idx;
2804 ccfs2 = (le16_to_cpu(htop->operation_mode) &
2805 IEEE80211_HT_OP_MODE_CCFS2_MASK)
2806 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
2807
2808 /* when parsing (and we know how to) CCFS1 and CCFS2 are equivalent */
2809 ccf0 = ccfs0;
2810 ccf1 = ccfs1;
2811 if (!ccfs1 && ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
2812 ccf1 = ccfs2;
2813
2814 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
2815 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002816
2817 switch (oper->chan_width) {
2818 case IEEE80211_VHT_CHANWIDTH_USE_HT:
Johannes Berg7eb26df2018-08-31 11:31:18 +03002819 /* just use HT information directly */
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002820 break;
2821 case IEEE80211_VHT_CHANWIDTH_80MHZ:
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002822 new.width = NL80211_CHAN_WIDTH_80;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002823 new.center_freq1 = cf0;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002824 /* If needed, adjust based on the newer interop workaround. */
Johannes Berg7eb26df2018-08-31 11:31:18 +03002825 if (ccf1) {
Jouni Malinen23665aa2016-02-01 11:40:55 +02002826 unsigned int diff;
2827
Johannes Berg7eb26df2018-08-31 11:31:18 +03002828 diff = abs(ccf1 - ccf0);
Jouni Malinen23665aa2016-02-01 11:40:55 +02002829 if (diff == 8) {
2830 new.width = NL80211_CHAN_WIDTH_160;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002831 new.center_freq1 = cf1;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002832 } else if (diff > 8) {
2833 new.width = NL80211_CHAN_WIDTH_80P80;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002834 new.center_freq2 = cf1;
Jouni Malinen23665aa2016-02-01 11:40:55 +02002835 }
2836 }
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002837 break;
2838 case IEEE80211_VHT_CHANWIDTH_160MHZ:
Johannes Berg7eb26df2018-08-31 11:31:18 +03002839 /* deprecated encoding */
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002840 new.width = NL80211_CHAN_WIDTH_160;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002841 new.center_freq1 = cf0;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002842 break;
2843 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
Johannes Berg7eb26df2018-08-31 11:31:18 +03002844 /* deprecated encoding */
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002845 new.width = NL80211_CHAN_WIDTH_80P80;
Johannes Berg7eb26df2018-08-31 11:31:18 +03002846 new.center_freq1 = cf0;
2847 new.center_freq2 = cf1;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002848 break;
2849 default:
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002850 return false;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002851 }
2852
Johannes Berg8ac3c7042015-12-18 15:08:34 +01002853 if (!cfg80211_chandef_valid(&new))
2854 return false;
2855
2856 *chandef = new;
2857 return true;
Janusz.Dziedzic@tieto.comabcff6e2015-03-20 06:37:01 +01002858}
2859
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002860int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2861 const struct ieee80211_supported_band *sband,
2862 const u8 *srates, int srates_len, u32 *rates)
2863{
2864 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
2865 int shift = ieee80211_chandef_get_shift(chandef);
2866 struct ieee80211_rate *br;
2867 int brate, rate, i, j, count = 0;
2868
2869 *rates = 0;
2870
2871 for (i = 0; i < srates_len; i++) {
2872 rate = srates[i] & 0x7f;
2873
2874 for (j = 0; j < sband->n_bitrates; j++) {
2875 br = &sband->bitrates[j];
2876 if ((rate_flags & br->flags) != rate_flags)
2877 continue;
2878
2879 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2880 if (brate == rate) {
2881 *rates |= BIT(j);
2882 count++;
2883 break;
2884 }
2885 }
2886 }
2887 return count;
2888}
2889
Johannes Bergfc8a7322012-06-28 10:33:25 +02002890int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
Johannes Berg6b778632012-07-23 14:53:27 +02002891 struct sk_buff *skb, bool need_basic,
Johannes Berg57fbcce2016-04-12 15:56:15 +02002892 enum nl80211_band band)
Arik Nemtsov768db3432011-09-28 14:12:51 +03002893{
Arik Nemtsov768db3432011-09-28 14:12:51 +03002894 struct ieee80211_local *local = sdata->local;
2895 struct ieee80211_supported_band *sband;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002896 int rate, shift;
Arik Nemtsov768db3432011-09-28 14:12:51 +03002897 u8 i, rates, *pos;
Johannes Bergfc8a7322012-06-28 10:33:25 +02002898 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002899 u32 rate_flags;
Arik Nemtsov768db3432011-09-28 14:12:51 +03002900
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002901 shift = ieee80211_vif_get_shift(&sdata->vif);
2902 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
Johannes Berg6b778632012-07-23 14:53:27 +02002903 sband = local->hw.wiphy->bands[band];
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002904 rates = 0;
2905 for (i = 0; i < sband->n_bitrates; i++) {
2906 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2907 continue;
2908 rates++;
2909 }
Arik Nemtsov768db3432011-09-28 14:12:51 +03002910 if (rates > 8)
2911 rates = 8;
2912
2913 if (skb_tailroom(skb) < rates + 2)
2914 return -ENOMEM;
2915
2916 pos = skb_put(skb, rates + 2);
2917 *pos++ = WLAN_EID_SUPP_RATES;
2918 *pos++ = rates;
2919 for (i = 0; i < rates; i++) {
Ashok Nagarajan657c3e02012-04-02 21:21:20 -07002920 u8 basic = 0;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002921 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2922 continue;
2923
Ashok Nagarajan657c3e02012-04-02 21:21:20 -07002924 if (need_basic && basic_rates & BIT(i))
2925 basic = 0x80;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002926 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2927 5 * (1 << shift));
2928 *pos++ = basic | (u8) rate;
Arik Nemtsov768db3432011-09-28 14:12:51 +03002929 }
2930
2931 return 0;
2932}
2933
Johannes Bergfc8a7322012-06-28 10:33:25 +02002934int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
Johannes Berg6b778632012-07-23 14:53:27 +02002935 struct sk_buff *skb, bool need_basic,
Johannes Berg57fbcce2016-04-12 15:56:15 +02002936 enum nl80211_band band)
Arik Nemtsov768db3432011-09-28 14:12:51 +03002937{
Arik Nemtsov768db3432011-09-28 14:12:51 +03002938 struct ieee80211_local *local = sdata->local;
2939 struct ieee80211_supported_band *sband;
Chun-Yeow Yeohcc63ec72013-09-07 23:40:44 -07002940 int rate, shift;
Arik Nemtsov768db3432011-09-28 14:12:51 +03002941 u8 i, exrates, *pos;
Johannes Bergfc8a7322012-06-28 10:33:25 +02002942 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002943 u32 rate_flags;
2944
2945 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2946 shift = ieee80211_vif_get_shift(&sdata->vif);
Arik Nemtsov768db3432011-09-28 14:12:51 +03002947
Johannes Berg6b778632012-07-23 14:53:27 +02002948 sband = local->hw.wiphy->bands[band];
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002949 exrates = 0;
2950 for (i = 0; i < sband->n_bitrates; i++) {
2951 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2952 continue;
2953 exrates++;
2954 }
2955
Arik Nemtsov768db3432011-09-28 14:12:51 +03002956 if (exrates > 8)
2957 exrates -= 8;
2958 else
2959 exrates = 0;
2960
2961 if (skb_tailroom(skb) < exrates + 2)
2962 return -ENOMEM;
2963
2964 if (exrates) {
2965 pos = skb_put(skb, exrates + 2);
2966 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2967 *pos++ = exrates;
2968 for (i = 8; i < sband->n_bitrates; i++) {
Ashok Nagarajan657c3e02012-04-02 21:21:20 -07002969 u8 basic = 0;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002970 if ((rate_flags & sband->bitrates[i].flags)
2971 != rate_flags)
2972 continue;
Ashok Nagarajan657c3e02012-04-02 21:21:20 -07002973 if (need_basic && basic_rates & BIT(i))
2974 basic = 0x80;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02002975 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2976 5 * (1 << shift));
2977 *pos++ = basic | (u8) rate;
Arik Nemtsov768db3432011-09-28 14:12:51 +03002978 }
2979 }
2980 return 0;
2981}
Wey-Yi Guy1dae27f2012-04-13 12:02:57 -07002982
2983int ieee80211_ave_rssi(struct ieee80211_vif *vif)
2984{
2985 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2986 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2987
Wey-Yi Guybe6bcab2012-04-23 09:30:32 -07002988 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
2989 /* non-managed type inferfaces */
2990 return 0;
2991 }
Johannes Berg338c17a2015-08-28 10:52:54 +02002992 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
Wey-Yi Guy1dae27f2012-04-13 12:02:57 -07002993}
Wey-Yi Guy0d8a0a12012-04-20 11:57:00 -07002994EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
Johannes Berg04ecd252012-09-11 14:34:12 +02002995
2996u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
2997{
2998 if (!mcs)
2999 return 1;
3000
3001 /* TODO: consider rx_highest */
3002
3003 if (mcs->rx_mask[3])
3004 return 4;
3005 if (mcs->rx_mask[2])
3006 return 3;
3007 if (mcs->rx_mask[1])
3008 return 2;
3009 return 1;
3010}
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003011
3012/**
3013 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3014 * @local: mac80211 hw info struct
3015 * @status: RX status
3016 * @mpdu_len: total MPDU length (including FCS)
3017 * @mpdu_offset: offset into MPDU to calculate timestamp at
3018 *
3019 * This function calculates the RX timestamp at the given MPDU offset, taking
3020 * into account what the RX timestamp was. An offset of 0 will just normalize
3021 * the timestamp to TSF at beginning of MPDU reception.
3022 */
3023u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3024 struct ieee80211_rx_status *status,
3025 unsigned int mpdu_len,
3026 unsigned int mpdu_offset)
3027{
3028 u64 ts = status->mactime;
3029 struct rate_info ri;
3030 u16 rate;
3031
3032 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3033 return 0;
3034
3035 memset(&ri, 0, sizeof(ri));
3036
Johannes Berg35f49622018-04-20 13:49:21 +03003037 ri.bw = status->bw;
3038
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003039 /* Fill cfg80211 rate info */
Johannes Bergda6a4352017-04-26 12:14:59 +02003040 switch (status->encoding) {
3041 case RX_ENC_HT:
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003042 ri.mcs = status->rate_idx;
3043 ri.flags |= RATE_INFO_FLAGS_MCS;
Johannes Berg7fdd69c2017-04-26 11:13:00 +02003044 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003045 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
Johannes Bergda6a4352017-04-26 12:14:59 +02003046 break;
3047 case RX_ENC_VHT:
Johannes Berg56146182012-11-09 15:07:02 +01003048 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3049 ri.mcs = status->rate_idx;
Johannes Berg8613c942017-04-26 13:51:41 +02003050 ri.nss = status->nss;
Johannes Berg7fdd69c2017-04-26 11:13:00 +02003051 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
Johannes Berg56146182012-11-09 15:07:02 +01003052 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
Johannes Bergda6a4352017-04-26 12:14:59 +02003053 break;
3054 default:
3055 WARN_ON(1);
3056 /* fall through */
3057 case RX_ENC_LEGACY: {
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003058 struct ieee80211_supported_band *sband;
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003059 int shift = 0;
3060 int bitrate;
3061
Johannes Bergda6a4352017-04-26 12:14:59 +02003062 switch (status->bw) {
3063 case RATE_INFO_BW_10:
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003064 shift = 1;
Johannes Bergda6a4352017-04-26 12:14:59 +02003065 break;
3066 case RATE_INFO_BW_5:
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003067 shift = 2;
Johannes Bergda6a4352017-04-26 12:14:59 +02003068 break;
Johannes Bergb51f3be2015-01-15 16:14:02 +01003069 }
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003070
3071 sband = local->hw.wiphy->bands[status->band];
Simon Wunderlich2103dec2013-07-08 16:55:53 +02003072 bitrate = sband->bitrates[status->rate_idx].bitrate;
3073 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
Johannes Bergf4a0f0c2016-01-25 15:46:34 +02003074
3075 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3076 /* TODO: handle HT/VHT preambles */
Johannes Berg57fbcce2016-04-12 15:56:15 +02003077 if (status->band == NL80211_BAND_5GHZ) {
Johannes Bergf4a0f0c2016-01-25 15:46:34 +02003078 ts += 20 << shift;
3079 mpdu_offset += 2;
Johannes Berg7fdd69c2017-04-26 11:13:00 +02003080 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
Johannes Bergf4a0f0c2016-01-25 15:46:34 +02003081 ts += 96;
3082 } else {
3083 ts += 192;
3084 }
3085 }
Johannes Bergda6a4352017-04-26 12:14:59 +02003086 break;
3087 }
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003088 }
3089
3090 rate = cfg80211_calculate_bitrate(&ri);
Johannes Bergd86aa4f2013-10-11 15:47:06 +02003091 if (WARN_ONCE(!rate,
Sara Sharonf980ebc2016-02-24 11:49:45 +02003092 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3093 (unsigned long long)status->flag, status->rate_idx,
Johannes Berg8613c942017-04-26 13:51:41 +02003094 status->nss))
Johannes Bergd86aa4f2013-10-11 15:47:06 +02003095 return 0;
Thomas Pedersenf4bda332012-11-13 10:46:27 -08003096
3097 /* rewind from end of MPDU */
3098 if (status->flag & RX_FLAG_MACTIME_END)
3099 ts -= mpdu_len * 8 * 10 / rate;
3100
3101 ts += mpdu_offset * 8 * 10 / rate;
3102
3103 return ts;
3104}
Simon Wunderlich164eb022013-02-08 18:16:20 +01003105
3106void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3107{
3108 struct ieee80211_sub_if_data *sdata;
Janusz Dziedzicd2859df2013-11-06 13:55:51 +01003109 struct cfg80211_chan_def chandef;
Simon Wunderlich164eb022013-02-08 18:16:20 +01003110
Johannes Berg4a199062017-04-26 10:58:53 +03003111 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3112 ASSERT_RTNL();
3113
Johannes Berg34a37402013-12-18 09:43:33 +01003114 mutex_lock(&local->mtx);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003115 list_for_each_entry(sdata, &local->interfaces, list) {
Johannes Berg34a37402013-12-18 09:43:33 +01003116 /* it might be waiting for the local->mtx, but then
3117 * by the time it gets it, sdata->wdev.cac_started
3118 * will no longer be true
3119 */
3120 cancel_delayed_work(&sdata->dfs_cac_timer_work);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003121
3122 if (sdata->wdev.cac_started) {
Janusz Dziedzicd2859df2013-11-06 13:55:51 +01003123 chandef = sdata->vif.bss_conf.chandef;
Simon Wunderlich164eb022013-02-08 18:16:20 +01003124 ieee80211_vif_release_channel(sdata);
3125 cfg80211_cac_event(sdata->dev,
Janusz Dziedzicd2859df2013-11-06 13:55:51 +01003126 &chandef,
Simon Wunderlich164eb022013-02-08 18:16:20 +01003127 NL80211_RADAR_CAC_ABORTED,
3128 GFP_KERNEL);
3129 }
3130 }
Johannes Berg34a37402013-12-18 09:43:33 +01003131 mutex_unlock(&local->mtx);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003132}
3133
3134void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3135{
3136 struct ieee80211_local *local =
3137 container_of(work, struct ieee80211_local, radar_detected_work);
Janusz Dziedzic84a3d1c2013-11-05 14:48:46 +01003138 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
Michal Kazior486cf4c2014-10-10 12:43:23 +02003139 struct ieee80211_chanctx *ctx;
3140 int num_chanctx = 0;
3141
3142 mutex_lock(&local->chanctx_mtx);
3143 list_for_each_entry(ctx, &local->chanctx_list, list) {
3144 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3145 continue;
3146
3147 num_chanctx++;
3148 chandef = ctx->conf.def;
3149 }
3150 mutex_unlock(&local->chanctx_mtx);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003151
Johannes Berg4a199062017-04-26 10:58:53 +03003152 rtnl_lock();
Simon Wunderlich164eb022013-02-08 18:16:20 +01003153 ieee80211_dfs_cac_cancel(local);
Johannes Berg4a199062017-04-26 10:58:53 +03003154 rtnl_unlock();
Simon Wunderlich164eb022013-02-08 18:16:20 +01003155
Michal Kazior486cf4c2014-10-10 12:43:23 +02003156 if (num_chanctx > 1)
3157 /* XXX: multi-channel is not supported yet */
Simon Wunderlich164eb022013-02-08 18:16:20 +01003158 WARN_ON(1);
Janusz Dziedzic84a3d1c2013-11-05 14:48:46 +01003159 else
Simon Wunderlich164eb022013-02-08 18:16:20 +01003160 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003161}
3162
3163void ieee80211_radar_detected(struct ieee80211_hw *hw)
3164{
3165 struct ieee80211_local *local = hw_to_local(hw);
3166
3167 trace_api_radar_detected(local);
3168
Johannes Berg4a199062017-04-26 10:58:53 +03003169 schedule_work(&local->radar_detected_work);
Simon Wunderlich164eb022013-02-08 18:16:20 +01003170}
3171EXPORT_SYMBOL(ieee80211_radar_detected);
Simon Wunderliche6b7cde2013-08-28 13:41:29 +02003172
3173u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3174{
3175 u32 ret;
3176 int tmp;
3177
3178 switch (c->width) {
3179 case NL80211_CHAN_WIDTH_20:
3180 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3181 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3182 break;
3183 case NL80211_CHAN_WIDTH_40:
3184 c->width = NL80211_CHAN_WIDTH_20;
3185 c->center_freq1 = c->chan->center_freq;
3186 ret = IEEE80211_STA_DISABLE_40MHZ |
3187 IEEE80211_STA_DISABLE_VHT;
3188 break;
3189 case NL80211_CHAN_WIDTH_80:
3190 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3191 /* n_P40 */
3192 tmp /= 2;
3193 /* freq_P40 */
3194 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3195 c->width = NL80211_CHAN_WIDTH_40;
3196 ret = IEEE80211_STA_DISABLE_VHT;
3197 break;
3198 case NL80211_CHAN_WIDTH_80P80:
3199 c->center_freq2 = 0;
3200 c->width = NL80211_CHAN_WIDTH_80;
3201 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3202 IEEE80211_STA_DISABLE_160MHZ;
3203 break;
3204 case NL80211_CHAN_WIDTH_160:
3205 /* n_P20 */
3206 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3207 /* n_P80 */
3208 tmp /= 4;
3209 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3210 c->width = NL80211_CHAN_WIDTH_80;
3211 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3212 IEEE80211_STA_DISABLE_160MHZ;
3213 break;
3214 default:
3215 case NL80211_CHAN_WIDTH_20_NOHT:
3216 WARN_ON_ONCE(1);
3217 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3218 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3219 break;
3220 case NL80211_CHAN_WIDTH_5:
3221 case NL80211_CHAN_WIDTH_10:
3222 WARN_ON_ONCE(1);
3223 /* keep c->width */
3224 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3225 break;
3226 }
3227
3228 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3229
3230 return ret;
3231}
Emmanuel Grumbach687da132013-10-01 16:45:43 +03003232
3233/*
3234 * Returns true if smps_mode_new is strictly more restrictive than
3235 * smps_mode_old.
3236 */
3237bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3238 enum ieee80211_smps_mode smps_mode_new)
3239{
3240 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3241 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3242 return false;
3243
3244 switch (smps_mode_old) {
3245 case IEEE80211_SMPS_STATIC:
3246 return false;
3247 case IEEE80211_SMPS_DYNAMIC:
3248 return smps_mode_new == IEEE80211_SMPS_STATIC;
3249 case IEEE80211_SMPS_OFF:
3250 return smps_mode_new != IEEE80211_SMPS_OFF;
3251 default:
3252 WARN_ON(1);
3253 }
3254
3255 return false;
3256}
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003257
3258int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3259 struct cfg80211_csa_settings *csa_settings)
3260{
3261 struct sk_buff *skb;
3262 struct ieee80211_mgmt *mgmt;
3263 struct ieee80211_local *local = sdata->local;
3264 int freq;
Johannes Berg4c121fd62017-09-08 11:54:46 +02003265 int hdr_len = offsetofend(struct ieee80211_mgmt,
3266 u.action.u.chan_switch);
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003267 u8 *pos;
3268
3269 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3270 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3271 return -EOPNOTSUPP;
3272
3273 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3274 5 + /* channel switch announcement element */
3275 3 + /* secondary channel offset element */
Simon Wunderlich75d627d2017-05-23 17:00:42 +02003276 5 + /* wide bandwidth channel switch announcement */
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003277 8); /* mesh channel switch parameters element */
3278 if (!skb)
3279 return -ENOMEM;
3280
3281 skb_reserve(skb, local->tx_headroom);
Johannes Bergb080db52017-06-16 14:29:19 +02003282 mgmt = skb_put_zero(skb, hdr_len);
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003283 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3284 IEEE80211_STYPE_ACTION);
3285
3286 eth_broadcast_addr(mgmt->da);
3287 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3288 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3289 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3290 } else {
3291 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3292 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3293 }
3294 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3295 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3296 pos = skb_put(skb, 5);
3297 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3298 *pos++ = 3; /* IE length */
3299 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3300 freq = csa_settings->chandef.chan->center_freq;
3301 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3302 *pos++ = csa_settings->count; /* count */
3303
3304 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3305 enum nl80211_channel_type ch_type;
3306
3307 skb_put(skb, 3);
3308 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3309 *pos++ = 1; /* IE length */
3310 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3311 if (ch_type == NL80211_CHAN_HT40PLUS)
3312 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3313 else
3314 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3315 }
3316
3317 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3318 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003319
3320 skb_put(skb, 8);
3321 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3322 *pos++ = 6; /* IE length */
3323 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3324 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3325 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3326 *pos++ |= csa_settings->block_tx ?
3327 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3328 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3329 pos += 2;
Chun-Yeow Yeohca91dc92013-11-12 10:31:48 +08003330 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003331 pos += 2;
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003332 }
3333
Simon Wunderlich75d627d2017-05-23 17:00:42 +02003334 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3335 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3336 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3337 skb_put(skb, 5);
3338 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3339 }
3340
Chun-Yeow Yeohc6da6742013-10-14 19:08:28 -07003341 ieee80211_tx_skb(sdata, skb);
3342 return 0;
3343}
Max Stepanov2475b1cc2013-03-24 14:23:27 +02003344
3345bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3346{
3347 return !(cs == NULL || cs->cipher == 0 ||
3348 cs->hdr_len < cs->pn_len + cs->pn_off ||
3349 cs->hdr_len <= cs->key_idx_off ||
3350 cs->key_idx_shift > 7 ||
3351 cs->key_idx_mask == 0);
3352}
3353
3354bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
3355{
3356 int i;
3357
3358 /* Ensure we have enough iftype bitmap space for all iftype values */
3359 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
3360
3361 for (i = 0; i < n; i++)
3362 if (!ieee80211_cs_valid(&cs[i]))
3363 return false;
3364
3365 return true;
3366}
3367
3368const struct ieee80211_cipher_scheme *
3369ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
3370 enum nl80211_iftype iftype)
3371{
3372 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
3373 int n = local->hw.n_cipher_schemes;
3374 int i;
3375 const struct ieee80211_cipher_scheme *cs = NULL;
3376
3377 for (i = 0; i < n; i++) {
3378 if (l[i].cipher == cipher) {
3379 cs = &l[i];
3380 break;
3381 }
3382 }
3383
3384 if (!cs || !(cs->iftype & BIT(iftype)))
3385 return NULL;
3386
3387 return cs;
3388}
3389
3390int ieee80211_cs_headroom(struct ieee80211_local *local,
3391 struct cfg80211_crypto_settings *crypto,
3392 enum nl80211_iftype iftype)
3393{
3394 const struct ieee80211_cipher_scheme *cs;
3395 int headroom = IEEE80211_ENCRYPT_HEADROOM;
3396 int i;
3397
3398 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
3399 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
3400 iftype);
3401
3402 if (cs && headroom < cs->hdr_len)
3403 headroom = cs->hdr_len;
3404 }
3405
3406 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
3407 if (cs && headroom < cs->hdr_len)
3408 headroom = cs->hdr_len;
3409
3410 return headroom;
3411}
Felix Fietkaua7022e62013-12-16 21:49:14 +01003412
3413static bool
3414ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3415{
3416 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3417 int skip;
3418
3419 if (end > 0)
3420 return false;
3421
Janusz.Dziedzic@tieto.com519ee692015-10-27 08:35:11 +01003422 /* One shot NOA */
3423 if (data->count[i] == 1)
3424 return false;
3425
3426 if (data->desc[i].interval == 0)
3427 return false;
3428
Felix Fietkaua7022e62013-12-16 21:49:14 +01003429 /* End time is in the past, check for repetitions */
3430 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3431 if (data->count[i] < 255) {
3432 if (data->count[i] <= skip) {
3433 data->count[i] = 0;
3434 return false;
3435 }
3436
3437 data->count[i] -= skip;
3438 }
3439
3440 data->desc[i].start += skip * data->desc[i].interval;
3441
3442 return true;
3443}
3444
3445static bool
3446ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3447 s32 *offset)
3448{
3449 bool ret = false;
3450 int i;
3451
3452 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3453 s32 cur;
3454
3455 if (!data->count[i])
3456 continue;
3457
3458 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3459 ret = true;
3460
3461 cur = data->desc[i].start - tsf;
3462 if (cur > *offset)
3463 continue;
3464
3465 cur = data->desc[i].start + data->desc[i].duration - tsf;
3466 if (cur > *offset)
3467 *offset = cur;
3468 }
3469
3470 return ret;
3471}
3472
3473static u32
3474ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3475{
3476 s32 offset = 0;
3477 int tries = 0;
3478 /*
3479 * arbitrary limit, used to avoid infinite loops when combined NoA
3480 * descriptors cover the full time period.
3481 */
3482 int max_tries = 5;
3483
3484 ieee80211_extend_absent_time(data, tsf, &offset);
3485 do {
3486 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3487 break;
3488
3489 tries++;
3490 } while (tries < max_tries);
3491
3492 return offset;
3493}
3494
3495void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3496{
3497 u32 next_offset = BIT(31) - 1;
3498 int i;
3499
3500 data->absent = 0;
3501 data->has_next_tsf = false;
3502 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3503 s32 start;
3504
3505 if (!data->count[i])
3506 continue;
3507
3508 ieee80211_extend_noa_desc(data, tsf, i);
3509 start = data->desc[i].start - tsf;
3510 if (start <= 0)
3511 data->absent |= BIT(i);
3512
3513 if (next_offset > start)
3514 next_offset = start;
3515
3516 data->has_next_tsf = true;
3517 }
3518
3519 if (data->absent)
3520 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3521
3522 data->next_tsf = tsf + next_offset;
3523}
3524EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3525
3526int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3527 struct ieee80211_noa_data *data, u32 tsf)
3528{
3529 int ret = 0;
3530 int i;
3531
3532 memset(data, 0, sizeof(*data));
3533
3534 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3535 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3536
3537 if (!desc->count || !desc->duration)
3538 continue;
3539
3540 data->count[i] = desc->count;
3541 data->desc[i].start = le32_to_cpu(desc->start_time);
3542 data->desc[i].duration = le32_to_cpu(desc->duration);
3543 data->desc[i].interval = le32_to_cpu(desc->interval);
3544
3545 if (data->count[i] > 1 &&
3546 data->desc[i].interval < data->desc[i].duration)
3547 continue;
3548
3549 ieee80211_extend_noa_desc(data, tsf, i);
3550 ret++;
3551 }
3552
3553 if (ret)
3554 ieee80211_update_p2p_noa(data, tsf);
3555
3556 return ret;
3557}
3558EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
Thomas Pedersen057d5f42013-12-19 10:25:15 -08003559
3560void ieee80211_recalc_dtim(struct ieee80211_local *local,
3561 struct ieee80211_sub_if_data *sdata)
3562{
3563 u64 tsf = drv_get_tsf(local, sdata);
3564 u64 dtim_count = 0;
3565 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3566 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3567 struct ps_data *ps;
3568 u8 bcns_from_dtim;
3569
3570 if (tsf == -1ULL || !beacon_int || !dtim_period)
3571 return;
3572
3573 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3574 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3575 if (!sdata->bss)
3576 return;
3577
3578 ps = &sdata->bss->ps;
3579 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3580 ps = &sdata->u.mesh.ps;
3581 } else {
3582 return;
3583 }
3584
3585 /*
3586 * actually finds last dtim_count, mac80211 will update in
3587 * __beacon_add_tim().
3588 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3589 */
3590 do_div(tsf, beacon_int);
3591 bcns_from_dtim = do_div(tsf, dtim_period);
3592 /* just had a DTIM */
3593 if (!bcns_from_dtim)
3594 dtim_count = 0;
3595 else
3596 dtim_count = dtim_period - bcns_from_dtim;
3597
3598 ps->dtim_count = dtim_count;
3599}
Luciano Coelho73de86a2014-02-13 11:31:59 +02003600
Michal Kazior71e61952014-06-25 12:35:07 +02003601static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3602 struct ieee80211_chanctx *ctx)
3603{
3604 struct ieee80211_sub_if_data *sdata;
3605 u8 radar_detect = 0;
3606
3607 lockdep_assert_held(&local->chanctx_mtx);
3608
3609 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3610 return 0;
3611
3612 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
3613 if (sdata->reserved_radar_required)
3614 radar_detect |= BIT(sdata->reserved_chandef.width);
3615
3616 /*
3617 * An in-place reservation context should not have any assigned vifs
3618 * until it replaces the other context.
3619 */
3620 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
3621 !list_empty(&ctx->assigned_vifs));
3622
3623 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
3624 if (sdata->radar_required)
3625 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
3626
3627 return radar_detect;
3628}
3629
Luciano Coelho73de86a2014-02-13 11:31:59 +02003630int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
3631 const struct cfg80211_chan_def *chandef,
3632 enum ieee80211_chanctx_mode chanmode,
3633 u8 radar_detect)
3634{
3635 struct ieee80211_local *local = sdata->local;
3636 struct ieee80211_sub_if_data *sdata_iter;
3637 enum nl80211_iftype iftype = sdata->wdev.iftype;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003638 struct ieee80211_chanctx *ctx;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003639 int total = 1;
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303640 struct iface_combination_params params = {
3641 .radar_detect = radar_detect,
3642 };
Luciano Coelho73de86a2014-02-13 11:31:59 +02003643
3644 lockdep_assert_held(&local->chanctx_mtx);
3645
3646 if (WARN_ON(hweight32(radar_detect) > 1))
3647 return -EINVAL;
3648
Luciano Coelhob6a55012014-02-27 11:07:21 +02003649 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
3650 !chandef->chan))
Luciano Coelho73de86a2014-02-13 11:31:59 +02003651 return -EINVAL;
3652
3653 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
3654 return -EINVAL;
3655
Johannes Bergac668af2016-10-21 14:25:14 +02003656 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3657 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
3658 /*
3659 * always passing this is harmless, since it'll be the
3660 * same value that cfg80211 finds if it finds the same
3661 * interface ... and that's always allowed
3662 */
3663 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
3664 }
3665
Luciano Coelho73de86a2014-02-13 11:31:59 +02003666 /* Always allow software iftypes */
3667 if (local->hw.wiphy->software_iftypes & BIT(iftype)) {
3668 if (radar_detect)
3669 return -EINVAL;
3670 return 0;
3671 }
3672
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303673 if (chandef)
3674 params.num_different_channels = 1;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003675
3676 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303677 params.iftype_num[iftype] = 1;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003678
3679 list_for_each_entry(ctx, &local->chanctx_list, list) {
Michal Kazior5bcae312014-06-25 12:35:06 +02003680 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3681 continue;
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303682 params.radar_detect |=
3683 ieee80211_chanctx_radar_detect(local, ctx);
Luciano Coelho73de86a2014-02-13 11:31:59 +02003684 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303685 params.num_different_channels++;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003686 continue;
3687 }
Luciano Coelhob6a55012014-02-27 11:07:21 +02003688 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
Luciano Coelho73de86a2014-02-13 11:31:59 +02003689 cfg80211_chandef_compatible(chandef,
3690 &ctx->conf.def))
3691 continue;
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303692 params.num_different_channels++;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003693 }
3694
3695 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
3696 struct wireless_dev *wdev_iter;
3697
3698 wdev_iter = &sdata_iter->wdev;
3699
3700 if (sdata_iter == sdata ||
Andrei Otcheretianski0f611d22015-03-12 08:53:30 +02003701 !ieee80211_sdata_running(sdata_iter) ||
Luciano Coelho73de86a2014-02-13 11:31:59 +02003702 local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
3703 continue;
3704
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303705 params.iftype_num[wdev_iter->iftype]++;
Luciano Coelho73de86a2014-02-13 11:31:59 +02003706 total++;
3707 }
3708
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303709 if (total == 1 && !params.radar_detect)
Luciano Coelho73de86a2014-02-13 11:31:59 +02003710 return 0;
3711
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303712 return cfg80211_check_combinations(local->hw.wiphy, &params);
Luciano Coelho73de86a2014-02-13 11:31:59 +02003713}
Michal Kazior6fa001b2014-04-09 15:29:23 +02003714
3715static void
3716ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
3717 void *data)
3718{
3719 u32 *max_num_different_channels = data;
3720
3721 *max_num_different_channels = max(*max_num_different_channels,
3722 c->num_different_channels);
3723}
3724
3725int ieee80211_max_num_channels(struct ieee80211_local *local)
3726{
3727 struct ieee80211_sub_if_data *sdata;
Michal Kazior6fa001b2014-04-09 15:29:23 +02003728 struct ieee80211_chanctx *ctx;
Michal Kazior6fa001b2014-04-09 15:29:23 +02003729 u32 max_num_different_channels = 1;
3730 int err;
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303731 struct iface_combination_params params = {0};
Michal Kazior6fa001b2014-04-09 15:29:23 +02003732
3733 lockdep_assert_held(&local->chanctx_mtx);
3734
3735 list_for_each_entry(ctx, &local->chanctx_list, list) {
Michal Kazior5bcae312014-06-25 12:35:06 +02003736 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3737 continue;
3738
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303739 params.num_different_channels++;
Michal Kazior6fa001b2014-04-09 15:29:23 +02003740
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303741 params.radar_detect |=
3742 ieee80211_chanctx_radar_detect(local, ctx);
Michal Kazior6fa001b2014-04-09 15:29:23 +02003743 }
3744
3745 list_for_each_entry_rcu(sdata, &local->interfaces, list)
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303746 params.iftype_num[sdata->wdev.iftype]++;
Michal Kazior6fa001b2014-04-09 15:29:23 +02003747
Purushottam Kushwahae2273002016-10-12 18:25:35 +05303748 err = cfg80211_iter_combinations(local->hw.wiphy, &params,
3749 ieee80211_iter_max_chans,
Michal Kazior6fa001b2014-04-09 15:29:23 +02003750 &max_num_different_channels);
3751 if (err < 0)
3752 return err;
3753
3754 return max_num_different_channels;
3755}
Arik Nemtsov40b861a2014-07-17 17:14:23 +03003756
3757u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
3758{
3759 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
3760 *buf++ = 7; /* len */
3761 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
3762 *buf++ = 0x50;
3763 *buf++ = 0xf2;
3764 *buf++ = 2; /* WME */
3765 *buf++ = 0; /* WME info */
3766 *buf++ = 1; /* WME ver */
3767 *buf++ = qosinfo; /* U-APSD no in use */
3768
3769 return buf;
3770}
Felix Fietkauba8c3d62015-03-27 21:30:37 +01003771
Michal Kaziorf2ac7e302016-01-27 15:26:12 +01003772void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
3773 unsigned long *frame_cnt,
3774 unsigned long *byte_cnt)
3775{
3776 struct txq_info *txqi = to_txq_info(txq);
Toke Høiland-Jørgensenbb42f2d2016-09-22 19:04:20 +02003777 u32 frag_cnt = 0, frag_bytes = 0;
3778 struct sk_buff *skb;
3779
3780 skb_queue_walk(&txqi->frags, skb) {
3781 frag_cnt++;
3782 frag_bytes += skb->len;
3783 }
Michal Kaziorf2ac7e302016-01-27 15:26:12 +01003784
3785 if (frame_cnt)
Toke Høiland-Jørgensenbb42f2d2016-09-22 19:04:20 +02003786 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
Michal Kaziorf2ac7e302016-01-27 15:26:12 +01003787
3788 if (byte_cnt)
Toke Høiland-Jørgensenbb42f2d2016-09-22 19:04:20 +02003789 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
Michal Kaziorf2ac7e302016-01-27 15:26:12 +01003790}
3791EXPORT_SYMBOL(ieee80211_txq_get_depth);
Emmanuel Grumbachf438ceb2016-10-18 23:12:12 +03003792
3793const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
3794 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
3795 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
3796 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
3797 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
3798};