blob: 091088ac7890a9c7f873f623f7789cffb9e12def [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
Stanislaw Gruszka5e5202a2011-11-03 10:40:45 +0100105 if (local->scan_channel) {
Karl Beldan675a0b02013-03-25 16:26:57 +0100106 chandef.chan = local->scan_channel;
Ben Greear4f2e9d92011-02-07 13:44:35 -0800107 /* If scanning on oper channel, use whatever channel-type
108 * is currently in use.
109 */
Karl Beldan675a0b02013-03-25 16:26:57 +0100110 if (chandef.chan == local->_oper_chandef.chan) {
111 chandef = local->_oper_chandef;
112 } else {
113 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
114 chandef.center_freq1 = chandef.chan->center_freq;
115 }
Ben Greearb23b0252011-02-04 11:54:17 -0800116 } else if (local->tmp_channel) {
Karl Beldan675a0b02013-03-25 16:26:57 +0100117 chandef.chan = local->tmp_channel;
118 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
119 chandef.center_freq1 = chandef.chan->center_freq;
120 } else
121 chandef = local->_oper_chandef;
Ben Greearb23b0252011-02-04 11:54:17 -0800122
Karl Beldan675a0b02013-03-25 16:26:57 +0100123 WARN(!cfg80211_chandef_valid(&chandef),
124 "control:%d MHz width:%d center: %d/%d MHz",
125 chandef.chan->center_freq, chandef.width,
126 chandef.center_freq1, chandef.center_freq2);
127
128 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
Ben Greearb23b0252011-02-04 11:54:17 -0800129 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
130 else
131 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
132
Felix Fietkauffd27782010-07-29 17:36:43 +0200133 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200134
Karl Beldan675a0b02013-03-25 16:26:57 +0100135 if (offchannel_flag ||
136 !cfg80211_chandef_identical(&local->hw.conf.chandef,
137 &local->_oper_chandef)) {
138 local->hw.conf.chandef = chandef;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200139 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
140 }
Johannes Berg8318d782008-01-24 19:38:38 +0100141
Johannes Berg0f782312009-12-01 13:37:02 +0100142 if (!conf_is_ht(&local->hw.conf)) {
143 /*
144 * mac80211.h documents that this is only valid
145 * when the channel is set to an HT type, and
146 * that otherwise STATIC is used.
147 */
148 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
149 } else if (local->hw.conf.smps_mode != local->smps_mode) {
150 local->hw.conf.smps_mode = local->smps_mode;
151 changed |= IEEE80211_CONF_CHANGE_SMPS;
152 }
153
Karl Beldan675a0b02013-03-25 16:26:57 +0100154 power = chandef.chan->max_power;
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530155
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200156 rcu_read_lock();
157 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
158 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
159 continue;
160 power = min(power, sdata->vif.bss_conf.txpower);
161 }
162 rcu_read_unlock();
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530163
Johannes Berge8975582008-10-09 12:18:51 +0200164 if (local->hw.conf.power_level != power) {
165 changed |= IEEE80211_CONF_CHANGE_POWER;
166 local->hw.conf.power_level = power;
167 }
Johannes Berg8318d782008-01-24 19:38:38 +0100168
Johannes Berg55de9082012-07-26 17:24:39 +0200169 return changed;
170}
171
172int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
173{
174 int ret = 0;
175
176 might_sleep();
177
178 if (!local->use_chanctx)
179 changed |= ieee80211_hw_conf_chan(local);
180 else
181 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
182 IEEE80211_CONF_CHANGE_POWER);
183
Johannes Berge8975582008-10-09 12:18:51 +0200184 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200185 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200186 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800187 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200188 * HW reconfiguration should never fail, the driver has told
189 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800190 *
191 * Current status:
192 * rfkill is not integrated with mac80211 and a
193 * configuration command can thus fail if hardware rfkill
194 * is enabled
195 *
196 * FIXME: integrate rfkill with mac80211 and then add this
197 * WARN_ON() back
198 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200199 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800200 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200201 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200202
203 return ret;
204}
205
Johannes Berg471b3ef2007-12-28 14:32:58 +0100206void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
207 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200208{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100209 struct ieee80211_local *local = sdata->local;
210
211 if (!changed)
212 return;
213
Johannes Berg12375ef2009-11-25 20:30:31 +0100214 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200215}
216
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200217u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200218{
Johannes Bergbda39332008-10-11 01:51:51 +0200219 sdata->vif.bss_conf.use_cts_prot = false;
220 sdata->vif.bss_conf.use_short_preamble = false;
221 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200222 return BSS_CHANGED_ERP_CTS_PROT |
223 BSS_CHANGED_ERP_PREAMBLE |
224 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200225}
226
Jiri Bencf0706e82007-05-05 11:45:53 -0700227static void ieee80211_tasklet_handler(unsigned long data)
228{
229 struct ieee80211_local *local = (struct ieee80211_local *) data;
230 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700231
232 while ((skb = skb_dequeue(&local->skb_queue)) ||
233 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
234 switch (skb->pkt_type) {
235 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100236 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700237 * netstack. */
238 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100239 ieee80211_rx(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700240 break;
241 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700242 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100243 ieee80211_tx_status(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700244 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200245 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600246 WARN(1, "mac80211: Packet is of unknown type %d\n",
247 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700248 dev_kfree_skb(skb);
249 break;
250 }
251 }
252}
253
Johannes Bergf2753dd2009-04-14 10:09:24 +0200254static void ieee80211_restart_work(struct work_struct *work)
255{
256 struct ieee80211_local *local =
257 container_of(work, struct ieee80211_local, restart_work);
258
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200259 /* wait for scan work complete */
260 flush_workqueue(local->workqueue);
261
262 mutex_lock(&local->mtx);
Luciano Coelho79f460c2011-05-11 17:09:36 +0300263 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
Johannes Berg5260a5b2012-07-06 21:55:11 +0200264 rcu_dereference_protected(local->sched_scan_sdata,
265 lockdep_is_held(&local->mtx)),
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200266 "%s called with hardware scan in progress\n", __func__);
267 mutex_unlock(&local->mtx);
268
Johannes Bergf2753dd2009-04-14 10:09:24 +0200269 rtnl_lock();
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200270 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200271 ieee80211_reconfig(local);
272 rtnl_unlock();
273}
274
275void ieee80211_restart_hw(struct ieee80211_hw *hw)
276{
277 struct ieee80211_local *local = hw_to_local(hw);
278
Johannes Bergb5878a22010-04-07 16:48:40 +0200279 trace_api_restart_hw(local);
280
Michael Bueschb196d032011-03-07 13:09:12 +0100281 wiphy_info(hw->wiphy,
282 "Hardware restart was requested\n");
283
John W. Linville18145c62010-08-30 15:12:02 -0400284 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Berg445ea4e2013-02-13 12:25:28 +0100285 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
286 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200287
Arik Nemtsov04800ad2012-06-06 11:25:02 +0300288 /*
289 * Stop all Rx during the reconfig. We don't want state changes
290 * or driver callbacks while this is in progress.
291 */
292 local->in_reconfig = true;
293 barrier();
294
Johannes Bergf2753dd2009-04-14 10:09:24 +0200295 schedule_work(&local->restart_work);
296}
297EXPORT_SYMBOL(ieee80211_restart_hw);
298
John W. Linville26b36cf2010-06-04 14:25:44 -0400299#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300300static int ieee80211_ifa_changed(struct notifier_block *nb,
301 unsigned long data, void *arg)
302{
303 struct in_ifaddr *ifa = arg;
304 struct ieee80211_local *local =
305 container_of(nb, struct ieee80211_local,
306 ifa_notifier);
307 struct net_device *ndev = ifa->ifa_dev->dev;
308 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300309 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300310 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300311 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300312 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300313 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300314
315 /* Make sure it's our interface that got changed */
316 if (!wdev)
317 return NOTIFY_DONE;
318
319 if (wdev->wiphy != local->hw.wiphy)
320 return NOTIFY_DONE;
321
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300322 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300323 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300324
325 /* ARP filtering is only supported in managed mode */
326 if (sdata->vif.type != NL80211_IFTYPE_STATION)
327 return NOTIFY_DONE;
328
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000329 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300330 if (!idev)
331 return NOTIFY_DONE;
332
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300333 ifmgd = &sdata->u.mgd;
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200334 sdata_lock(sdata);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300335
336 /* Copy the addresses to the bss_conf list */
337 ifa = idev->ifa_list;
Johannes Berg0f19b412013-01-14 16:39:07 +0100338 while (ifa) {
339 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
340 bss_conf->arp_addr_list[c] = ifa->ifa_address;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300341 ifa = ifa->ifa_next;
342 c++;
343 }
344
Juuso Oikarinen68542962010-06-09 13:43:26 +0300345 bss_conf->arp_addr_cnt = c;
346
Eliad Peller53d69c32011-12-12 15:30:04 +0200347 /* Configure driver only if associated (which also implies it is up) */
Johannes Berg0f19b412013-01-14 16:39:07 +0100348 if (ifmgd->associated)
Juuso Oikarinen68542962010-06-09 13:43:26 +0300349 ieee80211_bss_info_change_notify(sdata,
350 BSS_CHANGED_ARP_FILTER);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300351
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200352 sdata_unlock(sdata);
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300353
354 return NOTIFY_DONE;
355}
John W. Linville26b36cf2010-06-04 14:25:44 -0400356#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300357
Johannes Berga65240c2013-01-14 15:14:34 +0100358#if IS_ENABLED(CONFIG_IPV6)
359static int ieee80211_ifa6_changed(struct notifier_block *nb,
360 unsigned long data, void *arg)
361{
362 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
363 struct inet6_dev *idev = ifa->idev;
364 struct net_device *ndev = ifa->idev->dev;
365 struct ieee80211_local *local =
366 container_of(nb, struct ieee80211_local, ifa6_notifier);
367 struct wireless_dev *wdev = ndev->ieee80211_ptr;
368 struct ieee80211_sub_if_data *sdata;
369
370 /* Make sure it's our interface that got changed */
371 if (!wdev || wdev->wiphy != local->hw.wiphy)
372 return NOTIFY_DONE;
373
374 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
375
376 /*
377 * For now only support station mode. This is mostly because
378 * doing AP would have to handle AP_VLAN in some way ...
379 */
380 if (sdata->vif.type != NL80211_IFTYPE_STATION)
381 return NOTIFY_DONE;
382
383 drv_ipv6_addr_change(local, sdata, idev);
384
385 return NOTIFY_DONE;
386}
387#endif
388
Johannes Berg2e161f72010-08-12 15:38:38 +0200389/* There isn't a lot of sense in it, but you can transmit anything you like */
390static const struct ieee80211_txrx_stypes
391ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
392 [NL80211_IFTYPE_ADHOC] = {
393 .tx = 0xffff,
Will Hawkins3bfda622012-06-19 17:59:14 -0400394 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
395 BIT(IEEE80211_STYPE_AUTH >> 4) |
Antonio Quartulli41e31b82012-11-30 00:18:12 +0100396 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
397 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
Johannes Berg2e161f72010-08-12 15:38:38 +0200398 },
399 [NL80211_IFTYPE_STATION] = {
400 .tx = 0xffff,
401 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
402 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
403 },
404 [NL80211_IFTYPE_AP] = {
405 .tx = 0xffff,
406 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
407 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
408 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
409 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
410 BIT(IEEE80211_STYPE_AUTH >> 4) |
411 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
412 BIT(IEEE80211_STYPE_ACTION >> 4),
413 },
414 [NL80211_IFTYPE_AP_VLAN] = {
415 /* copy AP */
416 .tx = 0xffff,
417 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
418 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
419 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
420 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
421 BIT(IEEE80211_STYPE_AUTH >> 4) |
422 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
423 BIT(IEEE80211_STYPE_ACTION >> 4),
424 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200425 [NL80211_IFTYPE_P2P_CLIENT] = {
426 .tx = 0xffff,
427 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
428 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
429 },
430 [NL80211_IFTYPE_P2P_GO] = {
431 .tx = 0xffff,
432 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
433 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
434 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
435 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
436 BIT(IEEE80211_STYPE_AUTH >> 4) |
437 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
438 BIT(IEEE80211_STYPE_ACTION >> 4),
439 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800440 [NL80211_IFTYPE_MESH_POINT] = {
441 .tx = 0xffff,
Javier Cardona71839122011-04-07 15:08:31 -0700442 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
443 BIT(IEEE80211_STYPE_AUTH >> 4) |
444 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Javier Cardonac7108a72010-12-16 17:37:50 -0800445 },
Johannes Bergf142c6b2012-06-18 20:07:15 +0200446 [NL80211_IFTYPE_P2P_DEVICE] = {
447 .tx = 0xffff,
448 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
449 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
450 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200451};
452
Ben Greearef96a8422011-11-18 11:32:00 -0800453static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
454 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
455 IEEE80211_HT_AMPDU_PARM_DENSITY,
456
457 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
458 IEEE80211_HT_CAP_MAX_AMSDU |
Ben Greearbc0784d2012-12-12 16:56:20 -0800459 IEEE80211_HT_CAP_SGI_20 |
Ben Greearef96a8422011-11-18 11:32:00 -0800460 IEEE80211_HT_CAP_SGI_40),
461 .mcs = {
462 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
463 0xff, 0xff, 0xff, 0xff, 0xff, },
464 },
465};
466
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100467static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
468 .vht_cap_info =
469 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
470 IEEE80211_VHT_CAP_SHORT_GI_80 |
471 IEEE80211_VHT_CAP_SHORT_GI_160 |
472 IEEE80211_VHT_CAP_RXSTBC_1 |
473 IEEE80211_VHT_CAP_RXSTBC_2 |
474 IEEE80211_VHT_CAP_RXSTBC_3 |
475 IEEE80211_VHT_CAP_RXSTBC_4 |
476 IEEE80211_VHT_CAP_TXSTBC |
477 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
478 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
479 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
480 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
481 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
482 .supp_mcs = {
483 .rx_mcs_map = cpu_to_le16(~0),
484 .tx_mcs_map = cpu_to_le16(~0),
485 },
486};
487
Johannes Bergc6f9d6c2013-02-11 14:27:08 +0100488static const u8 extended_capabilities[] = {
489 0, 0, 0, 0, 0, 0, 0,
490 WLAN_EXT_CAPA8_OPMODE_NOTIF,
491};
492
Jiri Bencf0706e82007-05-05 11:45:53 -0700493struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
494 const struct ieee80211_ops *ops)
495{
Jiri Bencf0706e82007-05-05 11:45:53 -0700496 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100497 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700498 struct wiphy *wiphy;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200499 bool use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700500
Johannes Bergc0af0732012-07-26 14:42:10 +0200501 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
502 !ops->add_interface || !ops->remove_interface ||
503 !ops->configure_filter))
504 return NULL;
505
Johannes Bergf09603a2012-01-20 13:55:21 +0100506 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
507 return NULL;
508
Johannes Berge269d862012-07-26 14:46:32 +0200509 /* check all or no channel context operations exist */
510 i = !!ops->add_chanctx + !!ops->remove_chanctx +
511 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
512 !!ops->unassign_vif_chanctx;
513 if (WARN_ON(i != 0 && i != 5))
514 return NULL;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200515 use_chanctx = i == 5;
Johannes Berge269d862012-07-26 14:46:32 +0200516
Jiri Bencf0706e82007-05-05 11:45:53 -0700517 /* Ensure 32-byte alignment of our private data and hw private data.
518 * We use the wiphy priv data for both our ieee80211_local and for
519 * the driver's private data
520 *
521 * In memory it'll be like this:
522 *
523 * +-------------------------+
524 * | struct wiphy |
525 * +-------------------------+
526 * | struct ieee80211_local |
527 * +-------------------------+
528 * | driver's private data |
529 * +-------------------------+
530 *
531 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000532 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700533
534 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
535
536 if (!wiphy)
537 return NULL;
538
Johannes Berg2e161f72010-08-12 15:38:38 +0200539 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
540
Johannes Berg207aba62010-12-10 17:10:44 +0100541 wiphy->privid = mac80211_wiphy_privid;
542
Johannes Berg9bc383d2009-11-19 11:55:19 +0100543 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
544 WIPHY_FLAG_4ADDR_AP |
Johannes Bergee971922011-11-04 11:18:18 +0100545 WIPHY_FLAG_4ADDR_STATION |
Johannes Berg7c4ef712011-11-18 15:33:48 +0100546 WIPHY_FLAG_REPORTS_OBSS |
Johannes Berg81ddbb52012-03-26 18:47:18 +0200547 WIPHY_FLAG_OFFCHAN_TX;
548
Johannes Bergc6f9d6c2013-02-11 14:27:08 +0100549 wiphy->extended_capabilities = extended_capabilities;
550 wiphy->extended_capabilities_mask = extended_capabilities;
551 wiphy->extended_capabilities_len = ARRAY_SIZE(extended_capabilities);
552
Johannes Berg81ddbb52012-03-26 18:47:18 +0200553 if (ops->remain_on_channel)
554 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
Johannes Berg207aba62010-12-10 17:10:44 +0100555
Johannes Bergb2922192012-10-12 10:55:53 +0200556 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
557 NL80211_FEATURE_SAE |
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200558 NL80211_FEATURE_HT_IBSS |
Thomas Pedersena6dad6a2013-03-04 13:06:12 -0800559 NL80211_FEATURE_VIF_TXPOWER |
560 NL80211_FEATURE_USERSPACE_MPM;
Johannes Berga729cff2011-11-06 14:13:34 +0100561
Sam Lefflercd2bb512012-10-11 21:03:35 -0700562 if (!ops->hw_scan)
Antonio Quartulli5c95b942012-10-16 08:39:22 +0200563 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
564 NL80211_FEATURE_AP_SCAN;
565
Sam Lefflercd2bb512012-10-11 21:03:35 -0700566
Johannes Berg207aba62010-12-10 17:10:44 +0100567 if (!ops->set_key)
568 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200569
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100570 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700571
572 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200573
Jiri Bencf0706e82007-05-05 11:45:53 -0700574 local->hw.wiphy = wiphy;
575
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000576 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700577
578 local->ops = ops;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200579 local->use_chanctx = use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700580
Johannes Berge6a98542008-10-21 12:40:02 +0200581 /* set up some defaults */
582 local->hw.queues = 1;
583 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200584 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200585 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Helmut Schaa39e68712011-08-05 11:46:19 +0200586 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200587 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200588 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
589 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergac55d2f2012-05-10 09:09:10 +0200590 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
591 IEEE80211_RADIOTAP_MCS_HAVE_GI |
592 IEEE80211_RADIOTAP_MCS_HAVE_BW;
Johannes Berg51648922012-11-22 23:00:18 +0100593 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
594 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
Alexander Bondar219c3862013-01-22 16:52:23 +0200595 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
596 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200597 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
Ben Greearef96a8422011-11-18 11:32:00 -0800598 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100599 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
Jiri Bencf0706e82007-05-05 11:45:53 -0700600
Johannes Berg79010422007-09-18 17:29:21 -0400601 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000602
603 __hw_addr_init(&local->mc_list);
604
Johannes Bergc771c9d2009-01-23 22:54:03 +0100605 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200606 mutex_init(&local->mtx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700607
Johannes Bergad0e2b52010-06-01 10:19:19 +0200608 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200609 spin_lock_init(&local->filter_lock);
Christian Lamparterf9e124f2013-02-04 17:44:44 +0000610 spin_lock_init(&local->rx_path_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200611 spin_lock_init(&local->queue_stop_reason_lock);
612
Michal Kaziord01a1e62012-06-26 14:37:16 +0200613 INIT_LIST_HEAD(&local->chanctx_list);
614 mutex_init(&local->chanctx_mtx);
615
Johannes Bergc2b13452008-09-11 00:01:55 +0200616 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700617
Johannes Bergf2753dd2009-04-14 10:09:24 +0200618 INIT_WORK(&local->restart_work, ieee80211_restart_work);
619
Simon Wunderlich164eb022013-02-08 18:16:20 +0100620 INIT_WORK(&local->radar_detected_work,
621 ieee80211_dfs_radar_detected_work);
622
Johannes Berg3ac64be2009-08-17 16:16:53 +0200623 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100624 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200625
Kalle Valo520eb822008-12-18 23:35:27 +0200626 INIT_WORK(&local->dynamic_ps_enable_work,
627 ieee80211_dynamic_ps_enable_work);
628 INIT_WORK(&local->dynamic_ps_disable_work,
629 ieee80211_dynamic_ps_disable_work);
630 setup_timer(&local->dynamic_ps_timer,
631 ieee80211_dynamic_ps_timer, (unsigned long) local);
632
Luciano Coelho85a99942011-05-12 16:28:29 +0300633 INIT_WORK(&local->sched_scan_stopped_work,
634 ieee80211_sched_scan_stopped_work);
635
Johannes Berga729cff2011-11-06 14:13:34 +0100636 spin_lock_init(&local->ack_status_lock);
637 idr_init(&local->ack_status_frames);
Johannes Berga729cff2011-11-06 14:13:34 +0100638
Jiri Bencf0706e82007-05-05 11:45:53 -0700639 sta_info_init(local);
640
Johannes Berga6a67db2010-06-10 10:21:41 +0200641 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100642 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200643 atomic_set(&local->agg_queue_stop[i], 0);
644 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700645 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
646 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700647
648 tasklet_init(&local->tasklet,
649 ieee80211_tasklet_handler,
650 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700651
652 skb_queue_head_init(&local->skb_queue);
653 skb_queue_head_init(&local->skb_queue_unreliable);
654
Johannes Bergfe67c912010-11-27 20:02:59 +0100655 ieee80211_led_names(local);
656
Johannes Berg2eb278e2012-06-05 14:28:42 +0200657 ieee80211_roc_setup(local);
Johannes Berg21f83582010-12-18 17:20:47 +0100658
Johannes Berg005e4722012-02-26 11:24:35 +0100659 return &local->hw;
Jiri Bencf0706e82007-05-05 11:45:53 -0700660}
661EXPORT_SYMBOL(ieee80211_alloc_hw);
662
663int ieee80211_register_hw(struct ieee80211_hw *hw)
664{
665 struct ieee80211_local *local = hw_to_local(hw);
Johannes Berg7527a782011-05-13 10:58:57 +0200666 int result, i;
Johannes Berg8318d782008-01-24 19:38:38 +0100667 enum ieee80211_band band;
Johannes Bergbe4a4b62010-05-03 08:49:48 +0200668 int channels, max_bitrates;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000669 bool supp_ht, supp_vht;
Arik Nemtsov72d78722012-05-10 16:18:26 +0300670 netdev_features_t feature_whitelist;
Karl Beldanfffa4b12013-04-15 19:04:06 +0200671 struct cfg80211_chan_def dflt_chandef = {};
Johannes Berg25e47c12009-04-02 20:14:06 +0200672 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200673 /* keep WEP first, it may be removed below */
Johannes Berg25e47c12009-04-02 20:14:06 +0200674 WLAN_CIPHER_SUITE_WEP40,
675 WLAN_CIPHER_SUITE_WEP104,
676 WLAN_CIPHER_SUITE_TKIP,
677 WLAN_CIPHER_SUITE_CCMP,
678
679 /* keep last -- depends on hw flags! */
680 WLAN_CIPHER_SUITE_AES_CMAC
681 };
Johannes Berg8318d782008-01-24 19:38:38 +0100682
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200683 if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
684 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
685 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
686 return -EINVAL;
687
Larry Finger38bb3e92011-05-05 18:48:47 -0500688#ifdef CONFIG_PM
Johannes Berg964dc9e2013-06-03 17:25:34 +0200689 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
Johannes Bergeecc4802011-05-04 15:37:29 +0200690 return -EINVAL;
Johannes Bergdfb89c52012-06-27 09:23:48 +0200691#endif
Johannes Bergeecc4802011-05-04 15:37:29 +0200692
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200693 if (!local->use_chanctx) {
694 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
695 const struct ieee80211_iface_combination *comb;
696
697 comb = &local->hw.wiphy->iface_combinations[i];
698
699 if (comb->num_different_channels > 1)
700 return -EINVAL;
701 }
Johannes Berg746a3362012-10-22 15:20:53 +0200702 } else {
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200703 /*
704 * WDS is currently prohibited when channel contexts are used
705 * because there's no clear definition of which channel WDS
706 * type interfaces use
707 */
708 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
709 return -EINVAL;
Simon Wunderlich164eb022013-02-08 18:16:20 +0100710
711 /* DFS currently not supported with channel context drivers */
712 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
713 const struct ieee80211_iface_combination *comb;
714
715 comb = &local->hw.wiphy->iface_combinations[i];
716
717 if (comb->radar_detect_widths)
718 return -EINVAL;
719 }
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200720 }
721
Arik Nemtsov72d78722012-05-10 16:18:26 +0300722 /* Only HW csum features are currently compatible with mac80211 */
723 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
724 NETIF_F_HW_CSUM;
725 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
726 return -EINVAL;
727
Helmut Schaa78be49e2010-10-02 11:31:55 +0200728 if (hw->max_report_rates == 0)
729 hw->max_report_rates = hw->max_rates;
730
Johannes Berg04ecd252012-09-11 14:34:12 +0200731 local->rx_chains = 1;
732
Johannes Berg8318d782008-01-24 19:38:38 +0100733 /*
734 * generic code guarantees at least one band,
735 * set this very early because much code assumes
736 * that hw.conf.channel is assigned
737 */
Johannes Berg2a519312009-02-10 21:25:55 +0100738 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200739 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200740 supp_ht = false;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000741 supp_vht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100742 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
743 struct ieee80211_supported_band *sband;
744
745 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200746 if (!sband)
747 continue;
Karl Beldanfffa4b12013-04-15 19:04:06 +0200748
749 if (!dflt_chandef.chan) {
750 cfg80211_chandef_create(&dflt_chandef,
751 &sband->channels[0],
752 NL80211_CHAN_NO_HT);
Johannes Berg8318d782008-01-24 19:38:38 +0100753 /* init channel we're on */
Karl Beldanfffa4b12013-04-15 19:04:06 +0200754 if (!local->use_chanctx && !local->_oper_chandef.chan) {
755 local->hw.conf.chandef = dflt_chandef;
756 local->_oper_chandef = dflt_chandef;
757 }
758 local->monitor_chandef = dflt_chandef;
Johannes Berg8318d782008-01-24 19:38:38 +0100759 }
Karl Beldanfffa4b12013-04-15 19:04:06 +0200760
Johannes Bergde95a542009-04-01 11:58:36 +0200761 channels += sband->n_channels;
762
763 if (max_bitrates < sband->n_bitrates)
764 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200765 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000766 supp_vht = supp_vht || sband->vht_cap.vht_supported;
Johannes Berg04ecd252012-09-11 14:34:12 +0200767
768 if (sband->ht_cap.ht_supported)
769 local->rx_chains =
770 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
771 local->rx_chains);
772
773 /* TODO: consider VHT for RX chains, hopefully it's the same */
Johannes Berg8318d782008-01-24 19:38:38 +0100774 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700775
Johannes Berg5ba63532009-08-07 17:54:07 +0200776 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
777 sizeof(void *) * channels, GFP_KERNEL);
778 if (!local->int_scan_req)
Johannes Berg2a519312009-02-10 21:25:55 +0100779 return -ENOMEM;
780
Simon Wunderlichc72e8d32011-11-30 16:56:30 +0100781 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
782 if (!local->hw.wiphy->bands[band])
783 continue;
784 local->int_scan_req->rates[band] = (u32) -1;
785 }
786
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700787 /* if low-level driver supports AP, we also support VLAN */
Johannes Berg7527a782011-05-13 10:58:57 +0200788 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
789 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
790 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
791 }
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700792
793 /* mac80211 always supports monitor */
Johannes Berg7527a782011-05-13 10:58:57 +0200794 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
795 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
796
Johannes Berg55de9082012-07-26 17:24:39 +0200797 /* mac80211 doesn't support more than one IBSS interface right now */
Johannes Berg8e621fc2011-05-14 01:55:23 +0200798 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
799 const struct ieee80211_iface_combination *c;
800 int j;
801
802 c = &hw->wiphy->iface_combinations[i];
803
Johannes Berg8e621fc2011-05-14 01:55:23 +0200804 for (j = 0; j < c->n_limits; j++)
805 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
806 c->limits[j].max > 1)
807 return -EINVAL;
808 }
809
Johannes Berg5eb5a522010-08-25 14:34:01 +0200810#ifndef CONFIG_MAC80211_MESH
811 /* mesh depends on Kconfig, but drivers should set it if they want */
812 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
813#endif
814
Javier Cardona1570ca52011-04-07 15:08:35 -0700815 /* if the underlying driver supports mesh, mac80211 will (at least)
816 * provide routing of mesh authentication frames to userspace */
817 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
818 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
819
Johannes Berga621fa42010-08-27 14:26:54 +0300820 /* mac80211 supports control port protocol changing */
821 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
822
Johannes Berg77965c92009-02-18 18:45:06 +0100823 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
824 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
825 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
826 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
827
Kalle Valoab133152010-01-12 10:42:31 +0200828 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
829 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
830 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
831
Johannes Bergde95a542009-04-01 11:58:36 +0200832 /*
833 * Calculate scan IE length -- we need this to alloc
834 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300835 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200836 * information -- SSID is the driver's responsibility.
837 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300838 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
839 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200840 if (supp_ht)
841 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200842
Karl Beldand0e6c212013-03-25 16:26:58 +0100843 if (supp_vht)
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000844 local->scan_ies_len +=
Mahesh Palivelad4950282012-10-10 11:25:40 +0000845 2 + sizeof(struct ieee80211_vht_cap);
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000846
Johannes Bergde95a542009-04-01 11:58:36 +0200847 if (!local->ops->hw_scan) {
848 /* For hw_scan, driver needs to set these up. */
849 local->hw.wiphy->max_scan_ssids = 4;
850 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
851 }
852
853 /*
854 * If the driver supports any scan IEs, then assume the
855 * limit includes the IEs mac80211 will add, otherwise
856 * leave it at zero and let the driver sort it out; we
857 * still pass our IEs to the driver but userspace will
858 * not be allowed to in that case.
859 */
860 if (local->hw.wiphy->max_scan_ie_len)
861 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
862
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300863 /* Set up cipher suites unless driver already did */
864 if (!local->hw.wiphy->cipher_suites) {
865 local->hw.wiphy->cipher_suites = cipher_suites;
866 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
867 if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
868 local->hw.wiphy->n_cipher_suites--;
869 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200870 if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300871 if (local->hw.wiphy->cipher_suites == cipher_suites) {
872 local->hw.wiphy->cipher_suites += 2;
873 local->hw.wiphy->n_cipher_suites -= 2;
874 } else {
875 u32 *suites;
876 int r, w = 0;
877
878 /* Filter out WEP */
879
880 suites = kmemdup(
881 local->hw.wiphy->cipher_suites,
882 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
883 GFP_KERNEL);
Johannes Bergcfff2f92012-11-09 09:47:27 +0100884 if (!suites) {
885 result = -ENOMEM;
886 goto fail_wiphy_register;
887 }
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300888 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
889 u32 suite = local->hw.wiphy->cipher_suites[r];
890 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
891 suite == WLAN_CIPHER_SUITE_WEP104)
892 continue;
893 suites[w++] = suite;
894 }
895 local->hw.wiphy->cipher_suites = suites;
896 local->hw.wiphy->n_cipher_suites = w;
897 local->wiphy_ciphers_allocated = true;
898 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200899 }
Johannes Berg25e47c12009-04-02 20:14:06 +0200900
Johannes Berg21f83582010-12-18 17:20:47 +0100901 if (!local->ops->remain_on_channel)
902 local->hw.wiphy->max_remain_on_channel_duration = 5000;
Johannes Berga2939112010-12-14 17:54:28 +0100903
Luciano Coelho79f460c2011-05-11 17:09:36 +0300904 if (local->ops->sched_scan_start)
905 local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
906
Arik Nemtsovdfe018b2011-09-28 14:12:52 +0300907 /* mac80211 based drivers don't support internal TDLS setup */
908 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
909 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
910
Jiri Bencf0706e82007-05-05 11:45:53 -0700911 result = wiphy_register(local->hw.wiphy);
912 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +0100913 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -0700914
Johannes Berge2530082008-05-17 00:57:14 +0200915 /*
916 * We use the number of queues for feature tests (QoS, HT) internally
917 * so restrict them appropriately.
918 */
Johannes Berge2530082008-05-17 00:57:14 +0200919 if (hw->queues > IEEE80211_MAX_QUEUES)
920 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +0200921
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400922 local->workqueue =
Kees Cookd8537542013-07-03 15:04:57 -0700923 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400924 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -0700925 result = -ENOMEM;
926 goto fail_workqueue;
927 }
928
Johannes Bergb306f452007-07-10 19:32:08 +0200929 /*
930 * The hardware needs headroom for sending the frame,
931 * and we need some headroom for passing the frame to monitor
932 * interfaces, but never both at the same time.
933 */
Jiri Benc33ccad32007-07-18 17:10:44 +0200934 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200935 IEEE80211_TX_STATUS_HEADROOM);
Johannes Bergb306f452007-07-10 19:32:08 +0200936
Jiri Bence9f207f2007-05-05 11:46:38 -0700937 debugfs_hw_add(local);
938
Helmut Schaab4469182010-02-24 14:19:37 +0100939 /*
940 * if the driver doesn't specify a max listen interval we
941 * use 5 which should be a safe default
942 */
Tomas Winklerea95bba2008-07-18 13:53:00 +0800943 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +0100944 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +0800945
946 local->hw.conf.listen_interval = local->hw.max_listen_interval;
947
Juuso Oikarinenff616382010-06-09 09:51:52 +0300948 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +0300949
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100950 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -0400951 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700952 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
953 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100954
Mohammed Shafi Shajakhanb57e6b52012-02-09 19:59:43 +0530955 ieee80211_led_init(local);
956
Jiri Bencf0706e82007-05-05 11:45:53 -0700957 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -0700958
Johannes Berg830f9032007-10-28 14:51:05 +0100959 result = ieee80211_init_rate_ctrl_alg(local,
960 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -0700961 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700962 wiphy_debug(local->hw.wiphy,
963 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -0700964 goto fail_rate;
965 }
966
Johannes Berg8dffff22008-12-09 00:10:30 +0100967 /* add one default STA interface if supported */
968 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
969 result = ieee80211_if_add(local, "wlan%d", NULL,
970 NL80211_IFTYPE_STATION, NULL);
971 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700972 wiphy_warn(local->hw.wiphy,
973 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +0100974 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700975
Jiri Bencf0706e82007-05-05 11:45:53 -0700976 rtnl_unlock();
977
Johannes Berg10f644a2009-04-16 13:17:25 +0200978 local->network_latency_notifier.notifier_call =
979 ieee80211_max_network_latency;
980 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
981 &local->network_latency_notifier);
Johannes Berg10f644a2009-04-16 13:17:25 +0200982 if (result) {
983 rtnl_lock();
984 goto fail_pm_qos;
985 }
986
John W. Linville26b36cf2010-06-04 14:25:44 -0400987#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300988 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
989 result = register_inetaddr_notifier(&local->ifa_notifier);
990 if (result)
991 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -0400992#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300993
Johannes Berga65240c2013-01-14 15:14:34 +0100994#if IS_ENABLED(CONFIG_IPV6)
995 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
996 result = register_inet6addr_notifier(&local->ifa6_notifier);
997 if (result)
998 goto fail_ifa6;
999#endif
1000
Jiri Bencf0706e82007-05-05 11:45:53 -07001001 return 0;
1002
Johannes Berga65240c2013-01-14 15:14:34 +01001003#if IS_ENABLED(CONFIG_IPV6)
1004 fail_ifa6:
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001005#ifdef CONFIG_INET
Johannes Berga65240c2013-01-14 15:14:34 +01001006 unregister_inetaddr_notifier(&local->ifa_notifier);
1007#endif
1008#endif
1009#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001010 fail_ifa:
1011 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1012 &local->network_latency_notifier);
1013 rtnl_lock();
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001014#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001015 fail_pm_qos:
1016 ieee80211_led_exit(local);
1017 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +02001018 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -07001019 rtnl_unlock();
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001020 ieee80211_wep_free(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001021 sta_info_stop(local);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001022 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +02001023 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -07001024 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +02001025 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001026 if (local->wiphy_ciphers_allocated)
1027 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +02001028 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001029 return result;
1030}
1031EXPORT_SYMBOL(ieee80211_register_hw);
1032
Jiri Bencf0706e82007-05-05 11:45:53 -07001033void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1034{
1035 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001036
1037 tasklet_kill(&local->tx_pending_tasklet);
1038 tasklet_kill(&local->tasklet);
1039
Johannes Berg10f644a2009-04-16 13:17:25 +02001040 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1041 &local->network_latency_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001042#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001043 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001044#endif
Johannes Berga65240c2013-01-14 15:14:34 +01001045#if IS_ENABLED(CONFIG_IPV6)
1046 unregister_inet6addr_notifier(&local->ifa6_notifier);
1047#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001048
Jiri Bencf0706e82007-05-05 11:45:53 -07001049 rtnl_lock();
1050
Johannes Berg79010422007-09-18 17:29:21 -04001051 /*
1052 * At this point, interface list manipulations are fine
1053 * because the driver cannot be handing us frames any
1054 * more and the tasklet is killed.
1055 */
Johannes Berg75636522008-07-09 14:40:35 +02001056 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +02001057
Jiri Bencf0706e82007-05-05 11:45:53 -07001058 rtnl_unlock();
1059
Christian Lamparter258086a2010-08-22 23:48:25 +02001060 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001061 cancel_work_sync(&local->reconfig_filter);
1062
Jiri Bencf0706e82007-05-05 11:45:53 -07001063 ieee80211_clear_tx_pending(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001064 rate_control_deinitialize(local);
1065
Joe Perchesf64f9e72009-11-29 16:55:45 -08001066 if (skb_queue_len(&local->skb_queue) ||
1067 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001068 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001069 skb_queue_purge(&local->skb_queue);
1070 skb_queue_purge(&local->skb_queue_unreliable);
1071
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001072 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001073 wiphy_unregister(local->hw.wiphy);
Stanislaw Gruszkaecb44332011-08-12 14:00:59 +02001074 sta_info_stop(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001075 ieee80211_wep_free(local);
1076 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +02001077 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001078}
1079EXPORT_SYMBOL(ieee80211_unregister_hw);
1080
Johannes Berga729cff2011-11-06 14:13:34 +01001081static int ieee80211_free_ack_frame(int id, void *p, void *data)
1082{
1083 WARN_ONCE(1, "Have pending ack frames!\n");
1084 kfree_skb(p);
1085 return 0;
1086}
1087
Jiri Bencf0706e82007-05-05 11:45:53 -07001088void ieee80211_free_hw(struct ieee80211_hw *hw)
1089{
1090 struct ieee80211_local *local = hw_to_local(hw);
1091
Johannes Bergc771c9d2009-01-23 22:54:03 +01001092 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +02001093 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +01001094
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001095 if (local->wiphy_ciphers_allocated)
1096 kfree(local->hw.wiphy->cipher_suites);
1097
Johannes Berga729cff2011-11-06 14:13:34 +01001098 idr_for_each(&local->ack_status_frames,
1099 ieee80211_free_ack_frame, NULL);
1100 idr_destroy(&local->ack_status_frames);
1101
Jiri Bencf0706e82007-05-05 11:45:53 -07001102 wiphy_free(local->hw.wiphy);
1103}
1104EXPORT_SYMBOL(ieee80211_free_hw);
1105
Jiri Bencf0706e82007-05-05 11:45:53 -07001106static int __init ieee80211_init(void)
1107{
1108 struct sk_buff *skb;
1109 int ret;
1110
Johannes Berge039fa42008-05-15 12:55:29 +02001111 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1112 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +02001113 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -07001114
Felix Fietkaucccf1292008-10-05 18:07:45 +02001115 ret = rc80211_minstrel_init();
1116 if (ret)
1117 return ret;
1118
Felix Fietkauec8aa662010-05-13 16:48:03 +02001119 ret = rc80211_minstrel_ht_init();
1120 if (ret)
1121 goto err_minstrel;
1122
Johannes Berg4b475892008-01-02 15:17:03 +01001123 ret = rc80211_pid_init();
Mattias Nisslerad018372007-12-19 01:25:57 +01001124 if (ret)
Johannes Berg47846c92009-11-25 17:46:19 +01001125 goto err_pid;
Jiri Bencf0706e82007-05-05 11:45:53 -07001126
Johannes Berg47846c92009-11-25 17:46:19 +01001127 ret = ieee80211_iface_init();
1128 if (ret)
1129 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -07001130
Jiri Bencf0706e82007-05-05 11:45:53 -07001131 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +01001132 err_netdev:
1133 rc80211_pid_exit();
1134 err_pid:
Felix Fietkauec8aa662010-05-13 16:48:03 +02001135 rc80211_minstrel_ht_exit();
1136 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +01001137 rc80211_minstrel_exit();
1138
1139 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -07001140}
1141
Jiri Bencf0706e82007-05-05 11:45:53 -07001142static void __exit ieee80211_exit(void)
1143{
Johannes Berg4b475892008-01-02 15:17:03 +01001144 rc80211_pid_exit();
Felix Fietkauec8aa662010-05-13 16:48:03 +02001145 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +02001146 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +01001147
Johannes Bergbf7cd942013-02-15 14:40:31 +01001148 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001149
Johannes Berg47846c92009-11-25 17:46:19 +01001150 ieee80211_iface_exit();
Johannes Bergd07c7cf2011-05-14 11:04:51 +02001151
1152 rcu_barrier();
Jiri Bencf0706e82007-05-05 11:45:53 -07001153}
1154
1155
Johannes Bergca9938f2007-09-11 12:50:32 +02001156subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -07001157module_exit(ieee80211_exit);
1158
1159MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1160MODULE_LICENSE("GPL");