blob: 7d1c3ac48ed941866170afdf387def183690d612 [file] [log] [blame]
Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <net/mac80211.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070012#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/netdevice.h>
15#include <linux/types.h>
16#include <linux/slab.h>
17#include <linux/skbuff.h>
18#include <linux/etherdevice.h>
19#include <linux/if_arp.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070020#include <linux/rtnetlink.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070021#include <linux/bitmap.h>
Jean Pihete8db0be2011-08-25 15:35:03 +020022#include <linux/pm_qos.h>
Juuso Oikarinen68542962010-06-09 13:43:26 +030023#include <linux/inetdevice.h>
Eric W. Biederman881d9662007-09-17 11:56:21 -070024#include <net/net_namespace.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070025#include <net/cfg80211.h>
Johannes Berga65240c2013-01-14 15:14:34 +010026#include <net/addrconf.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070027
Jiri Bencf0706e82007-05-05 11:45:53 -070028#include "ieee80211_i.h"
Johannes Berg24487982009-04-23 18:52:52 +020029#include "driver-ops.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040030#include "rate.h"
Luis Carlos Cobof7a92142008-02-23 15:17:18 +010031#include "mesh.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070032#include "wep.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040033#include "led.h"
Michael Wue0eb6852007-09-18 17:29:21 -040034#include "cfg.h"
Jiri Bence9f207f2007-05-05 11:46:38 -070035#include "debugfs.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070036
Johannes Berg0d143fe2008-09-11 00:01:59 +020037void ieee80211_configure_filter(struct ieee80211_local *local)
Johannes Berg4150c572007-09-17 01:29:23 -040038{
Johannes Berg3ac64be2009-08-17 16:16:53 +020039 u64 mc;
Johannes Berg4150c572007-09-17 01:29:23 -040040 unsigned int changed_flags;
41 unsigned int new_flags = 0;
42
Johannes Berg53918992007-09-26 15:19:47 +020043 if (atomic_read(&local->iff_promiscs))
Johannes Berg4150c572007-09-17 01:29:23 -040044 new_flags |= FIF_PROMISC_IN_BSS;
45
Johannes Berg53918992007-09-26 15:19:47 +020046 if (atomic_read(&local->iff_allmultis))
Johannes Berg4150c572007-09-17 01:29:23 -040047 new_flags |= FIF_ALLMULTI;
48
Ben Greear8a690672012-04-17 10:54:16 -070049 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
50 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
Michael Wu8cc9a732008-01-31 19:48:23 +010051 new_flags |= FIF_BCN_PRBRESP_PROMISC;
52
Johannes Berg7be50862010-10-13 12:06:24 +020053 if (local->fif_probe_req || local->probe_req_reg)
54 new_flags |= FIF_PROBE_REQ;
55
Michael Wu8cc9a732008-01-31 19:48:23 +010056 if (local->fif_fcsfail)
57 new_flags |= FIF_FCSFAIL;
58
59 if (local->fif_plcpfail)
60 new_flags |= FIF_PLCPFAIL;
61
62 if (local->fif_control)
63 new_flags |= FIF_CONTROL;
64
65 if (local->fif_other_bss)
66 new_flags |= FIF_OTHER_BSS;
Johannes Berg4150c572007-09-17 01:29:23 -040067
Igor Perminove3b90ca2009-08-04 16:48:51 +040068 if (local->fif_pspoll)
69 new_flags |= FIF_PSPOLL;
70
Johannes Berg3ac64be2009-08-17 16:16:53 +020071 spin_lock_bh(&local->filter_lock);
Johannes Berg4150c572007-09-17 01:29:23 -040072 changed_flags = local->filter_flags ^ new_flags;
73
Jiri Pirko22bedad32010-04-01 21:22:57 +000074 mc = drv_prepare_multicast(local, &local->mc_list);
Johannes Berg3ac64be2009-08-17 16:16:53 +020075 spin_unlock_bh(&local->filter_lock);
76
Johannes Berg4150c572007-09-17 01:29:23 -040077 /* be a bit nasty */
78 new_flags |= (1<<31);
79
Johannes Berg3ac64be2009-08-17 16:16:53 +020080 drv_configure_filter(local, changed_flags, &new_flags, mc);
Johannes Berg4150c572007-09-17 01:29:23 -040081
82 WARN_ON(new_flags & (1<<31));
83
84 local->filter_flags = new_flags & ~(1<<31);
85}
86
Johannes Berg3ac64be2009-08-17 16:16:53 +020087static void ieee80211_reconfig_filter(struct work_struct *work)
88{
89 struct ieee80211_local *local =
90 container_of(work, struct ieee80211_local, reconfig_filter);
91
92 ieee80211_configure_filter(local);
93}
94
Johannes Berg55de9082012-07-26 17:24:39 +020095static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
Johannes Bergb2c258f2007-07-27 15:43:23 +020096{
Johannes Berg1ea6f9c2012-10-24 10:59:25 +020097 struct ieee80211_sub_if_data *sdata;
Karl Beldan675a0b02013-03-25 16:26:57 +010098 struct cfg80211_chan_def chandef = {};
Johannes Berg55de9082012-07-26 17:24:39 +020099 u32 changed = 0;
Johannes Berge8975582008-10-09 12:18:51 +0200100 int power;
Felix Fietkauffd27782010-07-29 17:36:43 +0200101 u32 offchannel_flag;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200102
Felix Fietkauffd27782010-07-29 17:36:43 +0200103 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Karl Beldan675a0b02013-03-25 16:26:57 +0100104
Simon Wunderlich7ca15a02013-07-08 16:55:56 +0200105 if (local->scan_chandef.chan) {
106 chandef = local->scan_chandef;
Ben Greearb23b0252011-02-04 11:54:17 -0800107 } else if (local->tmp_channel) {
Karl Beldan675a0b02013-03-25 16:26:57 +0100108 chandef.chan = local->tmp_channel;
109 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
110 chandef.center_freq1 = chandef.chan->center_freq;
111 } else
112 chandef = local->_oper_chandef;
Ben Greearb23b0252011-02-04 11:54:17 -0800113
Karl Beldan675a0b02013-03-25 16:26:57 +0100114 WARN(!cfg80211_chandef_valid(&chandef),
115 "control:%d MHz width:%d center: %d/%d MHz",
116 chandef.chan->center_freq, chandef.width,
117 chandef.center_freq1, chandef.center_freq2);
118
119 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
Ben Greearb23b0252011-02-04 11:54:17 -0800120 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
121 else
122 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
123
Felix Fietkauffd27782010-07-29 17:36:43 +0200124 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200125
Karl Beldan675a0b02013-03-25 16:26:57 +0100126 if (offchannel_flag ||
127 !cfg80211_chandef_identical(&local->hw.conf.chandef,
128 &local->_oper_chandef)) {
129 local->hw.conf.chandef = chandef;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200130 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
131 }
Johannes Berg8318d782008-01-24 19:38:38 +0100132
Johannes Berg0f782312009-12-01 13:37:02 +0100133 if (!conf_is_ht(&local->hw.conf)) {
134 /*
135 * mac80211.h documents that this is only valid
136 * when the channel is set to an HT type, and
137 * that otherwise STATIC is used.
138 */
139 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
140 } else if (local->hw.conf.smps_mode != local->smps_mode) {
141 local->hw.conf.smps_mode = local->smps_mode;
142 changed |= IEEE80211_CONF_CHANGE_SMPS;
143 }
144
Simon Wunderlich0430c882013-07-08 16:55:55 +0200145 power = ieee80211_chandef_max_power(&chandef);
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530146
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200147 rcu_read_lock();
148 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
149 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
150 continue;
151 power = min(power, sdata->vif.bss_conf.txpower);
152 }
153 rcu_read_unlock();
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530154
Johannes Berge8975582008-10-09 12:18:51 +0200155 if (local->hw.conf.power_level != power) {
156 changed |= IEEE80211_CONF_CHANGE_POWER;
157 local->hw.conf.power_level = power;
158 }
Johannes Berg8318d782008-01-24 19:38:38 +0100159
Johannes Berg55de9082012-07-26 17:24:39 +0200160 return changed;
161}
162
163int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
164{
165 int ret = 0;
166
167 might_sleep();
168
169 if (!local->use_chanctx)
170 changed |= ieee80211_hw_conf_chan(local);
171 else
172 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
173 IEEE80211_CONF_CHANGE_POWER);
174
Johannes Berge8975582008-10-09 12:18:51 +0200175 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200176 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200177 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800178 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200179 * HW reconfiguration should never fail, the driver has told
180 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800181 *
182 * Current status:
183 * rfkill is not integrated with mac80211 and a
184 * configuration command can thus fail if hardware rfkill
185 * is enabled
186 *
187 * FIXME: integrate rfkill with mac80211 and then add this
188 * WARN_ON() back
189 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200190 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800191 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200192 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200193
194 return ret;
195}
196
Johannes Berg471b3ef2007-12-28 14:32:58 +0100197void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
198 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200199{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100200 struct ieee80211_local *local = sdata->local;
201
202 if (!changed)
203 return;
204
Johannes Berg12375ef2009-11-25 20:30:31 +0100205 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200206}
207
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200208u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200209{
Johannes Bergbda39332008-10-11 01:51:51 +0200210 sdata->vif.bss_conf.use_cts_prot = false;
211 sdata->vif.bss_conf.use_short_preamble = false;
212 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200213 return BSS_CHANGED_ERP_CTS_PROT |
214 BSS_CHANGED_ERP_PREAMBLE |
215 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200216}
217
Jiri Bencf0706e82007-05-05 11:45:53 -0700218static void ieee80211_tasklet_handler(unsigned long data)
219{
220 struct ieee80211_local *local = (struct ieee80211_local *) data;
221 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700222
223 while ((skb = skb_dequeue(&local->skb_queue)) ||
224 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
225 switch (skb->pkt_type) {
226 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100227 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700228 * netstack. */
229 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100230 ieee80211_rx(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700231 break;
232 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700233 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100234 ieee80211_tx_status(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700235 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200236 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600237 WARN(1, "mac80211: Packet is of unknown type %d\n",
238 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700239 dev_kfree_skb(skb);
240 break;
241 }
242 }
243}
244
Johannes Bergf2753dd2009-04-14 10:09:24 +0200245static void ieee80211_restart_work(struct work_struct *work)
246{
247 struct ieee80211_local *local =
248 container_of(work, struct ieee80211_local, restart_work);
249
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200250 /* wait for scan work complete */
251 flush_workqueue(local->workqueue);
252
253 mutex_lock(&local->mtx);
Luciano Coelho79f460c2011-05-11 17:09:36 +0300254 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
Johannes Berg5260a5b2012-07-06 21:55:11 +0200255 rcu_dereference_protected(local->sched_scan_sdata,
256 lockdep_is_held(&local->mtx)),
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200257 "%s called with hardware scan in progress\n", __func__);
258 mutex_unlock(&local->mtx);
259
Johannes Bergf2753dd2009-04-14 10:09:24 +0200260 rtnl_lock();
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200261 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200262 ieee80211_reconfig(local);
263 rtnl_unlock();
264}
265
266void ieee80211_restart_hw(struct ieee80211_hw *hw)
267{
268 struct ieee80211_local *local = hw_to_local(hw);
269
Johannes Bergb5878a22010-04-07 16:48:40 +0200270 trace_api_restart_hw(local);
271
Michael Bueschb196d032011-03-07 13:09:12 +0100272 wiphy_info(hw->wiphy,
273 "Hardware restart was requested\n");
274
John W. Linville18145c62010-08-30 15:12:02 -0400275 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Berg445ea4e2013-02-13 12:25:28 +0100276 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
277 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200278
Arik Nemtsov04800ad2012-06-06 11:25:02 +0300279 /*
280 * Stop all Rx during the reconfig. We don't want state changes
281 * or driver callbacks while this is in progress.
282 */
283 local->in_reconfig = true;
284 barrier();
285
Johannes Bergf2753dd2009-04-14 10:09:24 +0200286 schedule_work(&local->restart_work);
287}
288EXPORT_SYMBOL(ieee80211_restart_hw);
289
John W. Linville26b36cf2010-06-04 14:25:44 -0400290#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300291static int ieee80211_ifa_changed(struct notifier_block *nb,
292 unsigned long data, void *arg)
293{
294 struct in_ifaddr *ifa = arg;
295 struct ieee80211_local *local =
296 container_of(nb, struct ieee80211_local,
297 ifa_notifier);
298 struct net_device *ndev = ifa->ifa_dev->dev;
299 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300300 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300301 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300302 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300303 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300304 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300305
306 /* Make sure it's our interface that got changed */
307 if (!wdev)
308 return NOTIFY_DONE;
309
310 if (wdev->wiphy != local->hw.wiphy)
311 return NOTIFY_DONE;
312
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300313 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300314 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300315
316 /* ARP filtering is only supported in managed mode */
317 if (sdata->vif.type != NL80211_IFTYPE_STATION)
318 return NOTIFY_DONE;
319
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000320 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300321 if (!idev)
322 return NOTIFY_DONE;
323
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300324 ifmgd = &sdata->u.mgd;
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200325 sdata_lock(sdata);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300326
327 /* Copy the addresses to the bss_conf list */
328 ifa = idev->ifa_list;
Johannes Berg0f19b412013-01-14 16:39:07 +0100329 while (ifa) {
330 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
331 bss_conf->arp_addr_list[c] = ifa->ifa_address;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300332 ifa = ifa->ifa_next;
333 c++;
334 }
335
Juuso Oikarinen68542962010-06-09 13:43:26 +0300336 bss_conf->arp_addr_cnt = c;
337
Eliad Peller53d69c32011-12-12 15:30:04 +0200338 /* Configure driver only if associated (which also implies it is up) */
Johannes Berg0f19b412013-01-14 16:39:07 +0100339 if (ifmgd->associated)
Juuso Oikarinen68542962010-06-09 13:43:26 +0300340 ieee80211_bss_info_change_notify(sdata,
341 BSS_CHANGED_ARP_FILTER);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300342
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200343 sdata_unlock(sdata);
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300344
345 return NOTIFY_DONE;
346}
John W. Linville26b36cf2010-06-04 14:25:44 -0400347#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300348
Johannes Berga65240c2013-01-14 15:14:34 +0100349#if IS_ENABLED(CONFIG_IPV6)
350static int ieee80211_ifa6_changed(struct notifier_block *nb,
351 unsigned long data, void *arg)
352{
353 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
354 struct inet6_dev *idev = ifa->idev;
355 struct net_device *ndev = ifa->idev->dev;
356 struct ieee80211_local *local =
357 container_of(nb, struct ieee80211_local, ifa6_notifier);
358 struct wireless_dev *wdev = ndev->ieee80211_ptr;
359 struct ieee80211_sub_if_data *sdata;
360
361 /* Make sure it's our interface that got changed */
362 if (!wdev || wdev->wiphy != local->hw.wiphy)
363 return NOTIFY_DONE;
364
365 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
366
367 /*
368 * For now only support station mode. This is mostly because
369 * doing AP would have to handle AP_VLAN in some way ...
370 */
371 if (sdata->vif.type != NL80211_IFTYPE_STATION)
372 return NOTIFY_DONE;
373
374 drv_ipv6_addr_change(local, sdata, idev);
375
376 return NOTIFY_DONE;
377}
378#endif
379
Johannes Berg2e161f72010-08-12 15:38:38 +0200380/* There isn't a lot of sense in it, but you can transmit anything you like */
381static const struct ieee80211_txrx_stypes
382ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
383 [NL80211_IFTYPE_ADHOC] = {
384 .tx = 0xffff,
Will Hawkins3bfda622012-06-19 17:59:14 -0400385 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
386 BIT(IEEE80211_STYPE_AUTH >> 4) |
Antonio Quartulli41e31b82012-11-30 00:18:12 +0100387 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
388 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
Johannes Berg2e161f72010-08-12 15:38:38 +0200389 },
390 [NL80211_IFTYPE_STATION] = {
391 .tx = 0xffff,
392 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
393 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
394 },
395 [NL80211_IFTYPE_AP] = {
396 .tx = 0xffff,
397 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
398 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
399 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
400 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
401 BIT(IEEE80211_STYPE_AUTH >> 4) |
402 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
403 BIT(IEEE80211_STYPE_ACTION >> 4),
404 },
405 [NL80211_IFTYPE_AP_VLAN] = {
406 /* copy AP */
407 .tx = 0xffff,
408 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
409 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
410 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
411 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
412 BIT(IEEE80211_STYPE_AUTH >> 4) |
413 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
414 BIT(IEEE80211_STYPE_ACTION >> 4),
415 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200416 [NL80211_IFTYPE_P2P_CLIENT] = {
417 .tx = 0xffff,
418 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
419 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
420 },
421 [NL80211_IFTYPE_P2P_GO] = {
422 .tx = 0xffff,
423 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
424 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
425 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
426 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
427 BIT(IEEE80211_STYPE_AUTH >> 4) |
428 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
429 BIT(IEEE80211_STYPE_ACTION >> 4),
430 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800431 [NL80211_IFTYPE_MESH_POINT] = {
432 .tx = 0xffff,
Javier Cardona71839122011-04-07 15:08:31 -0700433 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
434 BIT(IEEE80211_STYPE_AUTH >> 4) |
435 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Javier Cardonac7108a72010-12-16 17:37:50 -0800436 },
Johannes Bergf142c6b2012-06-18 20:07:15 +0200437 [NL80211_IFTYPE_P2P_DEVICE] = {
438 .tx = 0xffff,
439 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
440 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
441 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200442};
443
Ben Greearef96a8422011-11-18 11:32:00 -0800444static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
445 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
446 IEEE80211_HT_AMPDU_PARM_DENSITY,
447
448 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
449 IEEE80211_HT_CAP_MAX_AMSDU |
Ben Greearbc0784d2012-12-12 16:56:20 -0800450 IEEE80211_HT_CAP_SGI_20 |
Ben Greearef96a8422011-11-18 11:32:00 -0800451 IEEE80211_HT_CAP_SGI_40),
452 .mcs = {
453 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
454 0xff, 0xff, 0xff, 0xff, 0xff, },
455 },
456};
457
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100458static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
459 .vht_cap_info =
460 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
461 IEEE80211_VHT_CAP_SHORT_GI_80 |
462 IEEE80211_VHT_CAP_SHORT_GI_160 |
463 IEEE80211_VHT_CAP_RXSTBC_1 |
464 IEEE80211_VHT_CAP_RXSTBC_2 |
465 IEEE80211_VHT_CAP_RXSTBC_3 |
466 IEEE80211_VHT_CAP_RXSTBC_4 |
467 IEEE80211_VHT_CAP_TXSTBC |
468 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
469 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
470 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
471 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
472 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
473 .supp_mcs = {
474 .rx_mcs_map = cpu_to_le16(~0),
475 .tx_mcs_map = cpu_to_le16(~0),
476 },
477};
478
Johannes Bergc6f9d6c2013-02-11 14:27:08 +0100479static const u8 extended_capabilities[] = {
480 0, 0, 0, 0, 0, 0, 0,
481 WLAN_EXT_CAPA8_OPMODE_NOTIF,
482};
483
Jiri Bencf0706e82007-05-05 11:45:53 -0700484struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
485 const struct ieee80211_ops *ops)
486{
Jiri Bencf0706e82007-05-05 11:45:53 -0700487 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100488 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700489 struct wiphy *wiphy;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200490 bool use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700491
Johannes Bergc0af0732012-07-26 14:42:10 +0200492 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
493 !ops->add_interface || !ops->remove_interface ||
494 !ops->configure_filter))
495 return NULL;
496
Johannes Bergf09603a2012-01-20 13:55:21 +0100497 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
498 return NULL;
499
Johannes Berge269d862012-07-26 14:46:32 +0200500 /* check all or no channel context operations exist */
501 i = !!ops->add_chanctx + !!ops->remove_chanctx +
502 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
503 !!ops->unassign_vif_chanctx;
504 if (WARN_ON(i != 0 && i != 5))
505 return NULL;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200506 use_chanctx = i == 5;
Johannes Berge269d862012-07-26 14:46:32 +0200507
Jiri Bencf0706e82007-05-05 11:45:53 -0700508 /* Ensure 32-byte alignment of our private data and hw private data.
509 * We use the wiphy priv data for both our ieee80211_local and for
510 * the driver's private data
511 *
512 * In memory it'll be like this:
513 *
514 * +-------------------------+
515 * | struct wiphy |
516 * +-------------------------+
517 * | struct ieee80211_local |
518 * +-------------------------+
519 * | driver's private data |
520 * +-------------------------+
521 *
522 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000523 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700524
525 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
526
527 if (!wiphy)
528 return NULL;
529
Johannes Berg2e161f72010-08-12 15:38:38 +0200530 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
531
Johannes Berg207aba62010-12-10 17:10:44 +0100532 wiphy->privid = mac80211_wiphy_privid;
533
Johannes Berg9bc383d2009-11-19 11:55:19 +0100534 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
535 WIPHY_FLAG_4ADDR_AP |
Johannes Bergee971922011-11-04 11:18:18 +0100536 WIPHY_FLAG_4ADDR_STATION |
Johannes Berg7c4ef712011-11-18 15:33:48 +0100537 WIPHY_FLAG_REPORTS_OBSS |
Johannes Berg81ddbb52012-03-26 18:47:18 +0200538 WIPHY_FLAG_OFFCHAN_TX;
539
Johannes Bergc6f9d6c2013-02-11 14:27:08 +0100540 wiphy->extended_capabilities = extended_capabilities;
541 wiphy->extended_capabilities_mask = extended_capabilities;
542 wiphy->extended_capabilities_len = ARRAY_SIZE(extended_capabilities);
543
Johannes Berg81ddbb52012-03-26 18:47:18 +0200544 if (ops->remain_on_channel)
545 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
Johannes Berg207aba62010-12-10 17:10:44 +0100546
Johannes Bergb2922192012-10-12 10:55:53 +0200547 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
548 NL80211_FEATURE_SAE |
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200549 NL80211_FEATURE_HT_IBSS |
Thomas Pedersena6dad6a2013-03-04 13:06:12 -0800550 NL80211_FEATURE_VIF_TXPOWER |
551 NL80211_FEATURE_USERSPACE_MPM;
Johannes Berga729cff2011-11-06 14:13:34 +0100552
Sam Lefflercd2bb512012-10-11 21:03:35 -0700553 if (!ops->hw_scan)
Antonio Quartulli5c95b942012-10-16 08:39:22 +0200554 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
555 NL80211_FEATURE_AP_SCAN;
556
Sam Lefflercd2bb512012-10-11 21:03:35 -0700557
Johannes Berg207aba62010-12-10 17:10:44 +0100558 if (!ops->set_key)
559 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200560
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100561 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700562
563 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200564
Jiri Bencf0706e82007-05-05 11:45:53 -0700565 local->hw.wiphy = wiphy;
566
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000567 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700568
569 local->ops = ops;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200570 local->use_chanctx = use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700571
Johannes Berge6a98542008-10-21 12:40:02 +0200572 /* set up some defaults */
573 local->hw.queues = 1;
574 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200575 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200576 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Helmut Schaa39e68712011-08-05 11:46:19 +0200577 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200578 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200579 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
580 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergac55d2f2012-05-10 09:09:10 +0200581 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
582 IEEE80211_RADIOTAP_MCS_HAVE_GI |
583 IEEE80211_RADIOTAP_MCS_HAVE_BW;
Johannes Berg51648922012-11-22 23:00:18 +0100584 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
585 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
Alexander Bondar219c3862013-01-22 16:52:23 +0200586 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
587 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200588 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
Ben Greearef96a8422011-11-18 11:32:00 -0800589 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100590 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
Jiri Bencf0706e82007-05-05 11:45:53 -0700591
Johannes Berg79010422007-09-18 17:29:21 -0400592 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000593
594 __hw_addr_init(&local->mc_list);
595
Johannes Bergc771c9d2009-01-23 22:54:03 +0100596 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200597 mutex_init(&local->mtx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700598
Johannes Bergad0e2b52010-06-01 10:19:19 +0200599 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200600 spin_lock_init(&local->filter_lock);
Christian Lamparterf9e124f2013-02-04 17:44:44 +0000601 spin_lock_init(&local->rx_path_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200602 spin_lock_init(&local->queue_stop_reason_lock);
603
Michal Kaziord01a1e62012-06-26 14:37:16 +0200604 INIT_LIST_HEAD(&local->chanctx_list);
605 mutex_init(&local->chanctx_mtx);
606
Johannes Bergc2b13452008-09-11 00:01:55 +0200607 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700608
Johannes Bergf2753dd2009-04-14 10:09:24 +0200609 INIT_WORK(&local->restart_work, ieee80211_restart_work);
610
Simon Wunderlich164eb022013-02-08 18:16:20 +0100611 INIT_WORK(&local->radar_detected_work,
612 ieee80211_dfs_radar_detected_work);
613
Johannes Berg3ac64be2009-08-17 16:16:53 +0200614 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100615 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200616
Kalle Valo520eb822008-12-18 23:35:27 +0200617 INIT_WORK(&local->dynamic_ps_enable_work,
618 ieee80211_dynamic_ps_enable_work);
619 INIT_WORK(&local->dynamic_ps_disable_work,
620 ieee80211_dynamic_ps_disable_work);
621 setup_timer(&local->dynamic_ps_timer,
622 ieee80211_dynamic_ps_timer, (unsigned long) local);
623
Luciano Coelho85a99942011-05-12 16:28:29 +0300624 INIT_WORK(&local->sched_scan_stopped_work,
625 ieee80211_sched_scan_stopped_work);
626
Johannes Berga729cff2011-11-06 14:13:34 +0100627 spin_lock_init(&local->ack_status_lock);
628 idr_init(&local->ack_status_frames);
Johannes Berga729cff2011-11-06 14:13:34 +0100629
Jiri Bencf0706e82007-05-05 11:45:53 -0700630 sta_info_init(local);
631
Johannes Berga6a67db2010-06-10 10:21:41 +0200632 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100633 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200634 atomic_set(&local->agg_queue_stop[i], 0);
635 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700636 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
637 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700638
639 tasklet_init(&local->tasklet,
640 ieee80211_tasklet_handler,
641 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700642
643 skb_queue_head_init(&local->skb_queue);
644 skb_queue_head_init(&local->skb_queue_unreliable);
645
Johannes Bergfe67c912010-11-27 20:02:59 +0100646 ieee80211_led_names(local);
647
Johannes Berg2eb278e2012-06-05 14:28:42 +0200648 ieee80211_roc_setup(local);
Johannes Berg21f83582010-12-18 17:20:47 +0100649
Johannes Berg005e4722012-02-26 11:24:35 +0100650 return &local->hw;
Jiri Bencf0706e82007-05-05 11:45:53 -0700651}
652EXPORT_SYMBOL(ieee80211_alloc_hw);
653
654int ieee80211_register_hw(struct ieee80211_hw *hw)
655{
656 struct ieee80211_local *local = hw_to_local(hw);
Johannes Berg7527a782011-05-13 10:58:57 +0200657 int result, i;
Johannes Berg8318d782008-01-24 19:38:38 +0100658 enum ieee80211_band band;
Johannes Bergbe4a4b62010-05-03 08:49:48 +0200659 int channels, max_bitrates;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000660 bool supp_ht, supp_vht;
Arik Nemtsov72d78722012-05-10 16:18:26 +0300661 netdev_features_t feature_whitelist;
Karl Beldanfffa4b12013-04-15 19:04:06 +0200662 struct cfg80211_chan_def dflt_chandef = {};
Johannes Berg25e47c12009-04-02 20:14:06 +0200663 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200664 /* keep WEP first, it may be removed below */
Johannes Berg25e47c12009-04-02 20:14:06 +0200665 WLAN_CIPHER_SUITE_WEP40,
666 WLAN_CIPHER_SUITE_WEP104,
667 WLAN_CIPHER_SUITE_TKIP,
668 WLAN_CIPHER_SUITE_CCMP,
669
670 /* keep last -- depends on hw flags! */
671 WLAN_CIPHER_SUITE_AES_CMAC
672 };
Johannes Berg8318d782008-01-24 19:38:38 +0100673
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200674 if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
675 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
676 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
677 return -EINVAL;
678
Larry Finger38bb3e92011-05-05 18:48:47 -0500679#ifdef CONFIG_PM
Johannes Berg964dc9e2013-06-03 17:25:34 +0200680 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
Johannes Bergeecc4802011-05-04 15:37:29 +0200681 return -EINVAL;
Johannes Bergdfb89c52012-06-27 09:23:48 +0200682#endif
Johannes Bergeecc4802011-05-04 15:37:29 +0200683
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200684 if (!local->use_chanctx) {
685 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
686 const struct ieee80211_iface_combination *comb;
687
688 comb = &local->hw.wiphy->iface_combinations[i];
689
690 if (comb->num_different_channels > 1)
691 return -EINVAL;
692 }
Johannes Berg746a3362012-10-22 15:20:53 +0200693 } else {
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200694 /*
695 * WDS is currently prohibited when channel contexts are used
696 * because there's no clear definition of which channel WDS
697 * type interfaces use
698 */
699 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
700 return -EINVAL;
Simon Wunderlich164eb022013-02-08 18:16:20 +0100701
702 /* DFS currently not supported with channel context drivers */
703 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
704 const struct ieee80211_iface_combination *comb;
705
706 comb = &local->hw.wiphy->iface_combinations[i];
707
708 if (comb->radar_detect_widths)
709 return -EINVAL;
710 }
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200711 }
712
Arik Nemtsov72d78722012-05-10 16:18:26 +0300713 /* Only HW csum features are currently compatible with mac80211 */
714 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
715 NETIF_F_HW_CSUM;
716 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
717 return -EINVAL;
718
Helmut Schaa78be49e2010-10-02 11:31:55 +0200719 if (hw->max_report_rates == 0)
720 hw->max_report_rates = hw->max_rates;
721
Johannes Berg04ecd252012-09-11 14:34:12 +0200722 local->rx_chains = 1;
723
Johannes Berg8318d782008-01-24 19:38:38 +0100724 /*
725 * generic code guarantees at least one band,
726 * set this very early because much code assumes
727 * that hw.conf.channel is assigned
728 */
Johannes Berg2a519312009-02-10 21:25:55 +0100729 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200730 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200731 supp_ht = false;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000732 supp_vht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100733 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
734 struct ieee80211_supported_band *sband;
735
736 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200737 if (!sband)
738 continue;
Karl Beldanfffa4b12013-04-15 19:04:06 +0200739
740 if (!dflt_chandef.chan) {
741 cfg80211_chandef_create(&dflt_chandef,
742 &sband->channels[0],
743 NL80211_CHAN_NO_HT);
Johannes Berg8318d782008-01-24 19:38:38 +0100744 /* init channel we're on */
Karl Beldanfffa4b12013-04-15 19:04:06 +0200745 if (!local->use_chanctx && !local->_oper_chandef.chan) {
746 local->hw.conf.chandef = dflt_chandef;
747 local->_oper_chandef = dflt_chandef;
748 }
749 local->monitor_chandef = dflt_chandef;
Johannes Berg8318d782008-01-24 19:38:38 +0100750 }
Karl Beldanfffa4b12013-04-15 19:04:06 +0200751
Johannes Bergde95a542009-04-01 11:58:36 +0200752 channels += sband->n_channels;
753
754 if (max_bitrates < sband->n_bitrates)
755 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200756 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000757 supp_vht = supp_vht || sband->vht_cap.vht_supported;
Johannes Berg04ecd252012-09-11 14:34:12 +0200758
759 if (sband->ht_cap.ht_supported)
760 local->rx_chains =
761 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
762 local->rx_chains);
763
764 /* TODO: consider VHT for RX chains, hopefully it's the same */
Johannes Berg8318d782008-01-24 19:38:38 +0100765 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700766
Johannes Berg5ba63532009-08-07 17:54:07 +0200767 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
768 sizeof(void *) * channels, GFP_KERNEL);
769 if (!local->int_scan_req)
Johannes Berg2a519312009-02-10 21:25:55 +0100770 return -ENOMEM;
771
Simon Wunderlichc72e8d32011-11-30 16:56:30 +0100772 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
773 if (!local->hw.wiphy->bands[band])
774 continue;
775 local->int_scan_req->rates[band] = (u32) -1;
776 }
777
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700778 /* if low-level driver supports AP, we also support VLAN */
Johannes Berg7527a782011-05-13 10:58:57 +0200779 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
780 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
781 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
782 }
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700783
784 /* mac80211 always supports monitor */
Johannes Berg7527a782011-05-13 10:58:57 +0200785 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
786 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
787
Johannes Berg55de9082012-07-26 17:24:39 +0200788 /* mac80211 doesn't support more than one IBSS interface right now */
Johannes Berg8e621fc2011-05-14 01:55:23 +0200789 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
790 const struct ieee80211_iface_combination *c;
791 int j;
792
793 c = &hw->wiphy->iface_combinations[i];
794
Johannes Berg8e621fc2011-05-14 01:55:23 +0200795 for (j = 0; j < c->n_limits; j++)
796 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
797 c->limits[j].max > 1)
798 return -EINVAL;
799 }
800
Johannes Berg5eb5a522010-08-25 14:34:01 +0200801#ifndef CONFIG_MAC80211_MESH
802 /* mesh depends on Kconfig, but drivers should set it if they want */
803 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
804#endif
805
Javier Cardona1570ca52011-04-07 15:08:35 -0700806 /* if the underlying driver supports mesh, mac80211 will (at least)
807 * provide routing of mesh authentication frames to userspace */
808 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
809 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
810
Johannes Berga621fa42010-08-27 14:26:54 +0300811 /* mac80211 supports control port protocol changing */
812 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
813
Johannes Berg77965c92009-02-18 18:45:06 +0100814 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
815 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
816 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
817 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
818
Kalle Valoab133152010-01-12 10:42:31 +0200819 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
820 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
821 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
822
Johannes Bergde95a542009-04-01 11:58:36 +0200823 /*
824 * Calculate scan IE length -- we need this to alloc
825 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300826 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200827 * information -- SSID is the driver's responsibility.
828 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300829 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
830 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200831 if (supp_ht)
832 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200833
Karl Beldand0e6c212013-03-25 16:26:58 +0100834 if (supp_vht)
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000835 local->scan_ies_len +=
Mahesh Palivelad4950282012-10-10 11:25:40 +0000836 2 + sizeof(struct ieee80211_vht_cap);
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000837
Johannes Bergde95a542009-04-01 11:58:36 +0200838 if (!local->ops->hw_scan) {
839 /* For hw_scan, driver needs to set these up. */
840 local->hw.wiphy->max_scan_ssids = 4;
841 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
842 }
843
844 /*
845 * If the driver supports any scan IEs, then assume the
846 * limit includes the IEs mac80211 will add, otherwise
847 * leave it at zero and let the driver sort it out; we
848 * still pass our IEs to the driver but userspace will
849 * not be allowed to in that case.
850 */
851 if (local->hw.wiphy->max_scan_ie_len)
852 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
853
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300854 /* Set up cipher suites unless driver already did */
855 if (!local->hw.wiphy->cipher_suites) {
856 local->hw.wiphy->cipher_suites = cipher_suites;
857 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
858 if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
859 local->hw.wiphy->n_cipher_suites--;
860 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200861 if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300862 if (local->hw.wiphy->cipher_suites == cipher_suites) {
863 local->hw.wiphy->cipher_suites += 2;
864 local->hw.wiphy->n_cipher_suites -= 2;
865 } else {
866 u32 *suites;
867 int r, w = 0;
868
869 /* Filter out WEP */
870
871 suites = kmemdup(
872 local->hw.wiphy->cipher_suites,
873 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
874 GFP_KERNEL);
Johannes Bergcfff2f92012-11-09 09:47:27 +0100875 if (!suites) {
876 result = -ENOMEM;
877 goto fail_wiphy_register;
878 }
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300879 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
880 u32 suite = local->hw.wiphy->cipher_suites[r];
881 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
882 suite == WLAN_CIPHER_SUITE_WEP104)
883 continue;
884 suites[w++] = suite;
885 }
886 local->hw.wiphy->cipher_suites = suites;
887 local->hw.wiphy->n_cipher_suites = w;
888 local->wiphy_ciphers_allocated = true;
889 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200890 }
Johannes Berg25e47c12009-04-02 20:14:06 +0200891
Johannes Berg21f83582010-12-18 17:20:47 +0100892 if (!local->ops->remain_on_channel)
893 local->hw.wiphy->max_remain_on_channel_duration = 5000;
Johannes Berga2939112010-12-14 17:54:28 +0100894
Arik Nemtsovdfe018b2011-09-28 14:12:52 +0300895 /* mac80211 based drivers don't support internal TDLS setup */
896 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
897 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
898
Jiri Bencf0706e82007-05-05 11:45:53 -0700899 result = wiphy_register(local->hw.wiphy);
900 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +0100901 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -0700902
Johannes Berge2530082008-05-17 00:57:14 +0200903 /*
904 * We use the number of queues for feature tests (QoS, HT) internally
905 * so restrict them appropriately.
906 */
Johannes Berge2530082008-05-17 00:57:14 +0200907 if (hw->queues > IEEE80211_MAX_QUEUES)
908 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +0200909
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400910 local->workqueue =
Kees Cookd8537542013-07-03 15:04:57 -0700911 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400912 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -0700913 result = -ENOMEM;
914 goto fail_workqueue;
915 }
916
Johannes Bergb306f452007-07-10 19:32:08 +0200917 /*
918 * The hardware needs headroom for sending the frame,
919 * and we need some headroom for passing the frame to monitor
920 * interfaces, but never both at the same time.
921 */
Jiri Benc33ccad32007-07-18 17:10:44 +0200922 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200923 IEEE80211_TX_STATUS_HEADROOM);
Johannes Bergb306f452007-07-10 19:32:08 +0200924
Jiri Bence9f207f2007-05-05 11:46:38 -0700925 debugfs_hw_add(local);
926
Helmut Schaab4469182010-02-24 14:19:37 +0100927 /*
928 * if the driver doesn't specify a max listen interval we
929 * use 5 which should be a safe default
930 */
Tomas Winklerea95bba2008-07-18 13:53:00 +0800931 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +0100932 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +0800933
934 local->hw.conf.listen_interval = local->hw.max_listen_interval;
935
Juuso Oikarinenff616382010-06-09 09:51:52 +0300936 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +0300937
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100938 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -0400939 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700940 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
941 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100942
Karl Beldan24d47302013-11-19 17:12:05 +0100943 local->hw.conf.flags = IEEE80211_CONF_IDLE;
944
Mohammed Shafi Shajakhanb57e6b52012-02-09 19:59:43 +0530945 ieee80211_led_init(local);
946
Jiri Bencf0706e82007-05-05 11:45:53 -0700947 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -0700948
Johannes Berg830f9032007-10-28 14:51:05 +0100949 result = ieee80211_init_rate_ctrl_alg(local,
950 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -0700951 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700952 wiphy_debug(local->hw.wiphy,
953 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -0700954 goto fail_rate;
955 }
956
Johannes Berg8dffff22008-12-09 00:10:30 +0100957 /* add one default STA interface if supported */
958 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
959 result = ieee80211_if_add(local, "wlan%d", NULL,
960 NL80211_IFTYPE_STATION, NULL);
961 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700962 wiphy_warn(local->hw.wiphy,
963 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +0100964 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700965
Jiri Bencf0706e82007-05-05 11:45:53 -0700966 rtnl_unlock();
967
Johannes Berg10f644a2009-04-16 13:17:25 +0200968 local->network_latency_notifier.notifier_call =
969 ieee80211_max_network_latency;
970 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
971 &local->network_latency_notifier);
Johannes Berg10f644a2009-04-16 13:17:25 +0200972 if (result) {
973 rtnl_lock();
974 goto fail_pm_qos;
975 }
976
John W. Linville26b36cf2010-06-04 14:25:44 -0400977#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300978 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
979 result = register_inetaddr_notifier(&local->ifa_notifier);
980 if (result)
981 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -0400982#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300983
Johannes Berga65240c2013-01-14 15:14:34 +0100984#if IS_ENABLED(CONFIG_IPV6)
985 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
986 result = register_inet6addr_notifier(&local->ifa6_notifier);
987 if (result)
988 goto fail_ifa6;
989#endif
990
Jiri Bencf0706e82007-05-05 11:45:53 -0700991 return 0;
992
Johannes Berga65240c2013-01-14 15:14:34 +0100993#if IS_ENABLED(CONFIG_IPV6)
994 fail_ifa6:
Juuso Oikarinen93c08c32010-08-03 08:22:25 +0300995#ifdef CONFIG_INET
Johannes Berga65240c2013-01-14 15:14:34 +0100996 unregister_inetaddr_notifier(&local->ifa_notifier);
997#endif
998#endif
999#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001000 fail_ifa:
1001 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1002 &local->network_latency_notifier);
1003 rtnl_lock();
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001004#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001005 fail_pm_qos:
1006 ieee80211_led_exit(local);
1007 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +02001008 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -07001009 rtnl_unlock();
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001010 ieee80211_wep_free(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001011 sta_info_stop(local);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001012 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +02001013 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -07001014 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +02001015 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001016 if (local->wiphy_ciphers_allocated)
1017 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +02001018 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001019 return result;
1020}
1021EXPORT_SYMBOL(ieee80211_register_hw);
1022
Jiri Bencf0706e82007-05-05 11:45:53 -07001023void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1024{
1025 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001026
1027 tasklet_kill(&local->tx_pending_tasklet);
1028 tasklet_kill(&local->tasklet);
1029
Johannes Berg10f644a2009-04-16 13:17:25 +02001030 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1031 &local->network_latency_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001032#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001033 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001034#endif
Johannes Berga65240c2013-01-14 15:14:34 +01001035#if IS_ENABLED(CONFIG_IPV6)
1036 unregister_inet6addr_notifier(&local->ifa6_notifier);
1037#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001038
Jiri Bencf0706e82007-05-05 11:45:53 -07001039 rtnl_lock();
1040
Johannes Berg79010422007-09-18 17:29:21 -04001041 /*
1042 * At this point, interface list manipulations are fine
1043 * because the driver cannot be handing us frames any
1044 * more and the tasklet is killed.
1045 */
Johannes Berg75636522008-07-09 14:40:35 +02001046 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +02001047
Jiri Bencf0706e82007-05-05 11:45:53 -07001048 rtnl_unlock();
1049
Christian Lamparter258086a2010-08-22 23:48:25 +02001050 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001051 cancel_work_sync(&local->reconfig_filter);
Johannes Berg18db5942013-11-06 10:34:36 +01001052 flush_work(&local->sched_scan_stopped_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001053
Jiri Bencf0706e82007-05-05 11:45:53 -07001054 ieee80211_clear_tx_pending(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001055 rate_control_deinitialize(local);
1056
Joe Perchesf64f9e72009-11-29 16:55:45 -08001057 if (skb_queue_len(&local->skb_queue) ||
1058 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001059 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001060 skb_queue_purge(&local->skb_queue);
1061 skb_queue_purge(&local->skb_queue_unreliable);
1062
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001063 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001064 wiphy_unregister(local->hw.wiphy);
Stanislaw Gruszkaecb44332011-08-12 14:00:59 +02001065 sta_info_stop(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001066 ieee80211_wep_free(local);
1067 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +02001068 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001069}
1070EXPORT_SYMBOL(ieee80211_unregister_hw);
1071
Johannes Berga729cff2011-11-06 14:13:34 +01001072static int ieee80211_free_ack_frame(int id, void *p, void *data)
1073{
1074 WARN_ONCE(1, "Have pending ack frames!\n");
1075 kfree_skb(p);
1076 return 0;
1077}
1078
Jiri Bencf0706e82007-05-05 11:45:53 -07001079void ieee80211_free_hw(struct ieee80211_hw *hw)
1080{
1081 struct ieee80211_local *local = hw_to_local(hw);
1082
Johannes Bergc771c9d2009-01-23 22:54:03 +01001083 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +02001084 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +01001085
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001086 if (local->wiphy_ciphers_allocated)
1087 kfree(local->hw.wiphy->cipher_suites);
1088
Johannes Berga729cff2011-11-06 14:13:34 +01001089 idr_for_each(&local->ack_status_frames,
1090 ieee80211_free_ack_frame, NULL);
1091 idr_destroy(&local->ack_status_frames);
1092
Jiri Bencf0706e82007-05-05 11:45:53 -07001093 wiphy_free(local->hw.wiphy);
1094}
1095EXPORT_SYMBOL(ieee80211_free_hw);
1096
Jiri Bencf0706e82007-05-05 11:45:53 -07001097static int __init ieee80211_init(void)
1098{
1099 struct sk_buff *skb;
1100 int ret;
1101
Johannes Berge039fa42008-05-15 12:55:29 +02001102 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1103 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +02001104 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -07001105
Felix Fietkaucccf1292008-10-05 18:07:45 +02001106 ret = rc80211_minstrel_init();
1107 if (ret)
1108 return ret;
1109
Felix Fietkauec8aa662010-05-13 16:48:03 +02001110 ret = rc80211_minstrel_ht_init();
1111 if (ret)
1112 goto err_minstrel;
1113
Johannes Berg4b475892008-01-02 15:17:03 +01001114 ret = rc80211_pid_init();
Mattias Nisslerad018372007-12-19 01:25:57 +01001115 if (ret)
Johannes Berg47846c92009-11-25 17:46:19 +01001116 goto err_pid;
Jiri Bencf0706e82007-05-05 11:45:53 -07001117
Johannes Berg47846c92009-11-25 17:46:19 +01001118 ret = ieee80211_iface_init();
1119 if (ret)
1120 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -07001121
Jiri Bencf0706e82007-05-05 11:45:53 -07001122 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +01001123 err_netdev:
1124 rc80211_pid_exit();
1125 err_pid:
Felix Fietkauec8aa662010-05-13 16:48:03 +02001126 rc80211_minstrel_ht_exit();
1127 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +01001128 rc80211_minstrel_exit();
1129
1130 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -07001131}
1132
Jiri Bencf0706e82007-05-05 11:45:53 -07001133static void __exit ieee80211_exit(void)
1134{
Johannes Berg4b475892008-01-02 15:17:03 +01001135 rc80211_pid_exit();
Felix Fietkauec8aa662010-05-13 16:48:03 +02001136 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +02001137 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +01001138
Johannes Bergbf7cd942013-02-15 14:40:31 +01001139 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001140
Johannes Berg47846c92009-11-25 17:46:19 +01001141 ieee80211_iface_exit();
Johannes Bergd07c7cf2011-05-14 11:04:51 +02001142
1143 rcu_barrier();
Jiri Bencf0706e82007-05-05 11:45:53 -07001144}
1145
1146
Johannes Bergca9938f2007-09-11 12:50:32 +02001147subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -07001148module_exit(ieee80211_exit);
1149
1150MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1151MODULE_LICENSE("GPL");