blob: 4c1bf61bc778683dc352ebb32a585d45649168a6 [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;
Felix Fietkau764152f2014-04-10 15:06:48 +0200151 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
152 continue;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200153 power = min(power, sdata->vif.bss_conf.txpower);
154 }
155 rcu_read_unlock();
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530156
Johannes Berge8975582008-10-09 12:18:51 +0200157 if (local->hw.conf.power_level != power) {
158 changed |= IEEE80211_CONF_CHANGE_POWER;
159 local->hw.conf.power_level = power;
160 }
Johannes Berg8318d782008-01-24 19:38:38 +0100161
Johannes Berg55de9082012-07-26 17:24:39 +0200162 return changed;
163}
164
165int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
166{
167 int ret = 0;
168
169 might_sleep();
170
171 if (!local->use_chanctx)
172 changed |= ieee80211_hw_conf_chan(local);
173 else
174 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
175 IEEE80211_CONF_CHANGE_POWER);
176
Johannes Berge8975582008-10-09 12:18:51 +0200177 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200178 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200179 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800180 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200181 * HW reconfiguration should never fail, the driver has told
182 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800183 *
184 * Current status:
185 * rfkill is not integrated with mac80211 and a
186 * configuration command can thus fail if hardware rfkill
187 * is enabled
188 *
189 * FIXME: integrate rfkill with mac80211 and then add this
190 * WARN_ON() back
191 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200192 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800193 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200194 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200195
196 return ret;
197}
198
Johannes Berg471b3ef2007-12-28 14:32:58 +0100199void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
200 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200201{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100202 struct ieee80211_local *local = sdata->local;
203
Felix Fietkau990baec2014-04-09 00:08:01 +0200204 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
Johannes Berg471b3ef2007-12-28 14:32:58 +0100205 return;
206
Johannes Berg12375ef2009-11-25 20:30:31 +0100207 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200208}
209
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200210u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200211{
Johannes Bergbda39332008-10-11 01:51:51 +0200212 sdata->vif.bss_conf.use_cts_prot = false;
213 sdata->vif.bss_conf.use_short_preamble = false;
214 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200215 return BSS_CHANGED_ERP_CTS_PROT |
216 BSS_CHANGED_ERP_PREAMBLE |
217 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200218}
219
Jiri Bencf0706e82007-05-05 11:45:53 -0700220static void ieee80211_tasklet_handler(unsigned long data)
221{
222 struct ieee80211_local *local = (struct ieee80211_local *) data;
223 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700224
225 while ((skb = skb_dequeue(&local->skb_queue)) ||
226 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
227 switch (skb->pkt_type) {
228 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100229 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700230 * netstack. */
231 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100232 ieee80211_rx(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700233 break;
234 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700235 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100236 ieee80211_tx_status(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700237 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200238 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600239 WARN(1, "mac80211: Packet is of unknown type %d\n",
240 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700241 dev_kfree_skb(skb);
242 break;
243 }
244 }
245}
246
Johannes Bergf2753dd2009-04-14 10:09:24 +0200247static void ieee80211_restart_work(struct work_struct *work)
248{
249 struct ieee80211_local *local =
250 container_of(work, struct ieee80211_local, restart_work);
251
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200252 /* wait for scan work complete */
253 flush_workqueue(local->workqueue);
254
David Spinadeld43c6b62013-12-08 21:48:57 +0200255 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
256 "%s called with hardware scan in progress\n", __func__);
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200257
Johannes Bergf2753dd2009-04-14 10:09:24 +0200258 rtnl_lock();
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200259 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200260 ieee80211_reconfig(local);
261 rtnl_unlock();
262}
263
264void ieee80211_restart_hw(struct ieee80211_hw *hw)
265{
266 struct ieee80211_local *local = hw_to_local(hw);
267
Johannes Bergb5878a22010-04-07 16:48:40 +0200268 trace_api_restart_hw(local);
269
Michael Bueschb196d032011-03-07 13:09:12 +0100270 wiphy_info(hw->wiphy,
271 "Hardware restart was requested\n");
272
John W. Linville18145c62010-08-30 15:12:02 -0400273 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Berg445ea4e2013-02-13 12:25:28 +0100274 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
275 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200276
Arik Nemtsov04800ad2012-06-06 11:25:02 +0300277 /*
278 * Stop all Rx during the reconfig. We don't want state changes
279 * or driver callbacks while this is in progress.
280 */
281 local->in_reconfig = true;
282 barrier();
283
Johannes Bergf2753dd2009-04-14 10:09:24 +0200284 schedule_work(&local->restart_work);
285}
286EXPORT_SYMBOL(ieee80211_restart_hw);
287
John W. Linville26b36cf2010-06-04 14:25:44 -0400288#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300289static int ieee80211_ifa_changed(struct notifier_block *nb,
290 unsigned long data, void *arg)
291{
292 struct in_ifaddr *ifa = arg;
293 struct ieee80211_local *local =
294 container_of(nb, struct ieee80211_local,
295 ifa_notifier);
296 struct net_device *ndev = ifa->ifa_dev->dev;
297 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300298 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300299 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300300 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300301 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300302 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300303
304 /* Make sure it's our interface that got changed */
305 if (!wdev)
306 return NOTIFY_DONE;
307
308 if (wdev->wiphy != local->hw.wiphy)
309 return NOTIFY_DONE;
310
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300311 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300312 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300313
314 /* ARP filtering is only supported in managed mode */
315 if (sdata->vif.type != NL80211_IFTYPE_STATION)
316 return NOTIFY_DONE;
317
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000318 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300319 if (!idev)
320 return NOTIFY_DONE;
321
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300322 ifmgd = &sdata->u.mgd;
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200323 sdata_lock(sdata);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300324
325 /* Copy the addresses to the bss_conf list */
326 ifa = idev->ifa_list;
Johannes Berg0f19b412013-01-14 16:39:07 +0100327 while (ifa) {
328 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
329 bss_conf->arp_addr_list[c] = ifa->ifa_address;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300330 ifa = ifa->ifa_next;
331 c++;
332 }
333
Juuso Oikarinen68542962010-06-09 13:43:26 +0300334 bss_conf->arp_addr_cnt = c;
335
Eliad Peller53d69c32011-12-12 15:30:04 +0200336 /* Configure driver only if associated (which also implies it is up) */
Johannes Berg0f19b412013-01-14 16:39:07 +0100337 if (ifmgd->associated)
Juuso Oikarinen68542962010-06-09 13:43:26 +0300338 ieee80211_bss_info_change_notify(sdata,
339 BSS_CHANGED_ARP_FILTER);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300340
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200341 sdata_unlock(sdata);
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300342
343 return NOTIFY_DONE;
344}
John W. Linville26b36cf2010-06-04 14:25:44 -0400345#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300346
Johannes Berga65240c2013-01-14 15:14:34 +0100347#if IS_ENABLED(CONFIG_IPV6)
348static int ieee80211_ifa6_changed(struct notifier_block *nb,
349 unsigned long data, void *arg)
350{
351 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
352 struct inet6_dev *idev = ifa->idev;
353 struct net_device *ndev = ifa->idev->dev;
354 struct ieee80211_local *local =
355 container_of(nb, struct ieee80211_local, ifa6_notifier);
356 struct wireless_dev *wdev = ndev->ieee80211_ptr;
357 struct ieee80211_sub_if_data *sdata;
358
359 /* Make sure it's our interface that got changed */
360 if (!wdev || wdev->wiphy != local->hw.wiphy)
361 return NOTIFY_DONE;
362
363 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
364
365 /*
366 * For now only support station mode. This is mostly because
367 * doing AP would have to handle AP_VLAN in some way ...
368 */
369 if (sdata->vif.type != NL80211_IFTYPE_STATION)
370 return NOTIFY_DONE;
371
372 drv_ipv6_addr_change(local, sdata, idev);
373
374 return NOTIFY_DONE;
375}
376#endif
377
Johannes Berg2e161f72010-08-12 15:38:38 +0200378/* There isn't a lot of sense in it, but you can transmit anything you like */
379static const struct ieee80211_txrx_stypes
380ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
381 [NL80211_IFTYPE_ADHOC] = {
382 .tx = 0xffff,
Will Hawkins3bfda622012-06-19 17:59:14 -0400383 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
384 BIT(IEEE80211_STYPE_AUTH >> 4) |
Antonio Quartulli41e31b82012-11-30 00:18:12 +0100385 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
386 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
Johannes Berg2e161f72010-08-12 15:38:38 +0200387 },
388 [NL80211_IFTYPE_STATION] = {
389 .tx = 0xffff,
390 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
391 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
392 },
393 [NL80211_IFTYPE_AP] = {
394 .tx = 0xffff,
395 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
396 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
397 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
398 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
399 BIT(IEEE80211_STYPE_AUTH >> 4) |
400 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
401 BIT(IEEE80211_STYPE_ACTION >> 4),
402 },
403 [NL80211_IFTYPE_AP_VLAN] = {
404 /* copy 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 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200414 [NL80211_IFTYPE_P2P_CLIENT] = {
415 .tx = 0xffff,
416 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
417 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
418 },
419 [NL80211_IFTYPE_P2P_GO] = {
420 .tx = 0xffff,
421 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
422 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
423 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
424 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
425 BIT(IEEE80211_STYPE_AUTH >> 4) |
426 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
427 BIT(IEEE80211_STYPE_ACTION >> 4),
428 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800429 [NL80211_IFTYPE_MESH_POINT] = {
430 .tx = 0xffff,
Javier Cardona71839122011-04-07 15:08:31 -0700431 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
432 BIT(IEEE80211_STYPE_AUTH >> 4) |
433 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Javier Cardonac7108a72010-12-16 17:37:50 -0800434 },
Johannes Bergf142c6b2012-06-18 20:07:15 +0200435 [NL80211_IFTYPE_P2P_DEVICE] = {
436 .tx = 0xffff,
437 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
438 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
439 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200440};
441
Ben Greearef96a8422011-11-18 11:32:00 -0800442static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
443 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
444 IEEE80211_HT_AMPDU_PARM_DENSITY,
445
446 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
447 IEEE80211_HT_CAP_MAX_AMSDU |
Ben Greearbc0784d2012-12-12 16:56:20 -0800448 IEEE80211_HT_CAP_SGI_20 |
Ben Greearef96a8422011-11-18 11:32:00 -0800449 IEEE80211_HT_CAP_SGI_40),
450 .mcs = {
451 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
452 0xff, 0xff, 0xff, 0xff, 0xff, },
453 },
454};
455
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100456static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
457 .vht_cap_info =
458 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
459 IEEE80211_VHT_CAP_SHORT_GI_80 |
460 IEEE80211_VHT_CAP_SHORT_GI_160 |
461 IEEE80211_VHT_CAP_RXSTBC_1 |
462 IEEE80211_VHT_CAP_RXSTBC_2 |
463 IEEE80211_VHT_CAP_RXSTBC_3 |
464 IEEE80211_VHT_CAP_RXSTBC_4 |
465 IEEE80211_VHT_CAP_TXSTBC |
466 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
467 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
468 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
469 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
470 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
471 .supp_mcs = {
472 .rx_mcs_map = cpu_to_le16(~0),
473 .tx_mcs_map = cpu_to_le16(~0),
474 },
475};
476
Johannes Bergc6f9d6c2013-02-11 14:27:08 +0100477static const u8 extended_capabilities[] = {
478 0, 0, 0, 0, 0, 0, 0,
479 WLAN_EXT_CAPA8_OPMODE_NOTIF,
480};
481
Jiri Bencf0706e82007-05-05 11:45:53 -0700482struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
483 const struct ieee80211_ops *ops)
484{
Jiri Bencf0706e82007-05-05 11:45:53 -0700485 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100486 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700487 struct wiphy *wiphy;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200488 bool use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700489
Johannes Bergc0af0732012-07-26 14:42:10 +0200490 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
491 !ops->add_interface || !ops->remove_interface ||
492 !ops->configure_filter))
493 return NULL;
494
Johannes Bergf09603a2012-01-20 13:55:21 +0100495 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
496 return NULL;
497
Johannes Berge269d862012-07-26 14:46:32 +0200498 /* check all or no channel context operations exist */
499 i = !!ops->add_chanctx + !!ops->remove_chanctx +
500 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
501 !!ops->unassign_vif_chanctx;
502 if (WARN_ON(i != 0 && i != 5))
503 return NULL;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200504 use_chanctx = i == 5;
Johannes Berge269d862012-07-26 14:46:32 +0200505
Jiri Bencf0706e82007-05-05 11:45:53 -0700506 /* Ensure 32-byte alignment of our private data and hw private data.
507 * We use the wiphy priv data for both our ieee80211_local and for
508 * the driver's private data
509 *
510 * In memory it'll be like this:
511 *
512 * +-------------------------+
513 * | struct wiphy |
514 * +-------------------------+
515 * | struct ieee80211_local |
516 * +-------------------------+
517 * | driver's private data |
518 * +-------------------------+
519 *
520 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000521 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700522
523 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
524
525 if (!wiphy)
526 return NULL;
527
Johannes Berg2e161f72010-08-12 15:38:38 +0200528 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
529
Johannes Berg207aba62010-12-10 17:10:44 +0100530 wiphy->privid = mac80211_wiphy_privid;
531
Johannes Berg9bc383d2009-11-19 11:55:19 +0100532 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
533 WIPHY_FLAG_4ADDR_AP |
Johannes Bergee971922011-11-04 11:18:18 +0100534 WIPHY_FLAG_4ADDR_STATION |
Johannes Berg7c4ef712011-11-18 15:33:48 +0100535 WIPHY_FLAG_REPORTS_OBSS |
Johannes Berg81ddbb52012-03-26 18:47:18 +0200536 WIPHY_FLAG_OFFCHAN_TX;
537
Johannes Bergc6f9d6c2013-02-11 14:27:08 +0100538 wiphy->extended_capabilities = extended_capabilities;
539 wiphy->extended_capabilities_mask = extended_capabilities;
540 wiphy->extended_capabilities_len = ARRAY_SIZE(extended_capabilities);
541
Johannes Berg81ddbb52012-03-26 18:47:18 +0200542 if (ops->remain_on_channel)
543 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
Johannes Berg207aba62010-12-10 17:10:44 +0100544
Johannes Bergb2922192012-10-12 10:55:53 +0200545 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
546 NL80211_FEATURE_SAE |
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200547 NL80211_FEATURE_HT_IBSS |
Thomas Pedersena6dad6a2013-03-04 13:06:12 -0800548 NL80211_FEATURE_VIF_TXPOWER |
549 NL80211_FEATURE_USERSPACE_MPM;
Johannes Berga729cff2011-11-06 14:13:34 +0100550
Sam Lefflercd2bb512012-10-11 21:03:35 -0700551 if (!ops->hw_scan)
Antonio Quartulli5c95b942012-10-16 08:39:22 +0200552 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
553 NL80211_FEATURE_AP_SCAN;
554
Sam Lefflercd2bb512012-10-11 21:03:35 -0700555
Johannes Berg207aba62010-12-10 17:10:44 +0100556 if (!ops->set_key)
557 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200558
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100559 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700560
561 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200562
Jiri Bencf0706e82007-05-05 11:45:53 -0700563 local->hw.wiphy = wiphy;
564
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000565 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700566
567 local->ops = ops;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200568 local->use_chanctx = use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700569
Johannes Berge6a98542008-10-21 12:40:02 +0200570 /* set up some defaults */
571 local->hw.queues = 1;
572 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200573 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200574 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Helmut Schaa39e68712011-08-05 11:46:19 +0200575 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200576 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200577 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
578 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergac55d2f2012-05-10 09:09:10 +0200579 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
580 IEEE80211_RADIOTAP_MCS_HAVE_GI |
581 IEEE80211_RADIOTAP_MCS_HAVE_BW;
Johannes Berg51648922012-11-22 23:00:18 +0100582 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
583 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
Alexander Bondar219c3862013-01-22 16:52:23 +0200584 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
585 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200586 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
Ben Greearef96a8422011-11-18 11:32:00 -0800587 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100588 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
Jiri Bencf0706e82007-05-05 11:45:53 -0700589
Johannes Berg79010422007-09-18 17:29:21 -0400590 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000591
592 __hw_addr_init(&local->mc_list);
593
Johannes Bergc771c9d2009-01-23 22:54:03 +0100594 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200595 mutex_init(&local->mtx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700596
Johannes Bergad0e2b52010-06-01 10:19:19 +0200597 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200598 spin_lock_init(&local->filter_lock);
Christian Lamparterf9e124f2013-02-04 17:44:44 +0000599 spin_lock_init(&local->rx_path_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200600 spin_lock_init(&local->queue_stop_reason_lock);
601
Michal Kaziord01a1e62012-06-26 14:37:16 +0200602 INIT_LIST_HEAD(&local->chanctx_list);
603 mutex_init(&local->chanctx_mtx);
604
Johannes Bergc2b13452008-09-11 00:01:55 +0200605 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700606
Johannes Bergf2753dd2009-04-14 10:09:24 +0200607 INIT_WORK(&local->restart_work, ieee80211_restart_work);
608
Simon Wunderlich164eb022013-02-08 18:16:20 +0100609 INIT_WORK(&local->radar_detected_work,
610 ieee80211_dfs_radar_detected_work);
611
Johannes Berg3ac64be2009-08-17 16:16:53 +0200612 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100613 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200614
Kalle Valo520eb822008-12-18 23:35:27 +0200615 INIT_WORK(&local->dynamic_ps_enable_work,
616 ieee80211_dynamic_ps_enable_work);
617 INIT_WORK(&local->dynamic_ps_disable_work,
618 ieee80211_dynamic_ps_disable_work);
619 setup_timer(&local->dynamic_ps_timer,
620 ieee80211_dynamic_ps_timer, (unsigned long) local);
621
Luciano Coelho85a99942011-05-12 16:28:29 +0300622 INIT_WORK(&local->sched_scan_stopped_work,
623 ieee80211_sched_scan_stopped_work);
624
Johannes Berga729cff2011-11-06 14:13:34 +0100625 spin_lock_init(&local->ack_status_lock);
626 idr_init(&local->ack_status_frames);
Johannes Berga729cff2011-11-06 14:13:34 +0100627
Jiri Bencf0706e82007-05-05 11:45:53 -0700628 sta_info_init(local);
629
Johannes Berga6a67db2010-06-10 10:21:41 +0200630 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100631 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200632 atomic_set(&local->agg_queue_stop[i], 0);
633 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700634 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
635 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700636
637 tasklet_init(&local->tasklet,
638 ieee80211_tasklet_handler,
639 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700640
641 skb_queue_head_init(&local->skb_queue);
642 skb_queue_head_init(&local->skb_queue_unreliable);
643
Johannes Bergfe67c912010-11-27 20:02:59 +0100644 ieee80211_led_names(local);
645
Johannes Berg2eb278e2012-06-05 14:28:42 +0200646 ieee80211_roc_setup(local);
Johannes Berg21f83582010-12-18 17:20:47 +0100647
Johannes Berg005e4722012-02-26 11:24:35 +0100648 return &local->hw;
Jiri Bencf0706e82007-05-05 11:45:53 -0700649}
650EXPORT_SYMBOL(ieee80211_alloc_hw);
651
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200652static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
Jiri Bencf0706e82007-05-05 11:45:53 -0700653{
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200654 bool have_wep = !(IS_ERR(local->wep_tx_tfm) ||
655 IS_ERR(local->wep_rx_tfm));
656 bool have_mfp = local->hw.flags & IEEE80211_HW_MFP_CAPABLE;
657 const struct ieee80211_cipher_scheme *cs = local->hw.cipher_schemes;
658 int n_suites = 0, r = 0, w = 0;
659 u32 *suites;
Johannes Berg25e47c12009-04-02 20:14:06 +0200660 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200661 /* keep WEP first, it may be removed below */
Johannes Berg25e47c12009-04-02 20:14:06 +0200662 WLAN_CIPHER_SUITE_WEP40,
663 WLAN_CIPHER_SUITE_WEP104,
664 WLAN_CIPHER_SUITE_TKIP,
665 WLAN_CIPHER_SUITE_CCMP,
666
667 /* keep last -- depends on hw flags! */
668 WLAN_CIPHER_SUITE_AES_CMAC
669 };
Johannes Berg8318d782008-01-24 19:38:38 +0100670
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200671 /* Driver specifies the ciphers, we have nothing to do... */
672 if (local->hw.wiphy->cipher_suites && have_wep)
673 return 0;
674
675 /* Set up cipher suites if driver relies on mac80211 cipher defs */
676 if (!local->hw.wiphy->cipher_suites && !cs) {
677 local->hw.wiphy->cipher_suites = cipher_suites;
678 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
679
680 if (!have_mfp)
681 local->hw.wiphy->n_cipher_suites--;
682
683 if (!have_wep) {
684 local->hw.wiphy->cipher_suites += 2;
685 local->hw.wiphy->n_cipher_suites -= 2;
686 }
687
688 return 0;
689 }
690
691 if (!local->hw.wiphy->cipher_suites) {
692 /*
693 * Driver specifies cipher schemes only
694 * We start counting ciphers defined by schemes, TKIP and CCMP
695 */
696 n_suites = local->hw.n_cipher_schemes + 2;
697
698 /* check if we have WEP40 and WEP104 */
699 if (have_wep)
700 n_suites += 2;
701
702 /* check if we have AES_CMAC */
703 if (have_mfp)
704 n_suites++;
705
706 suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL);
707 if (!suites)
708 return -ENOMEM;
709
710 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
711 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
712
713 if (have_wep) {
714 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
715 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
716 }
717
718 if (have_mfp)
719 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
720
721 for (r = 0; r < local->hw.n_cipher_schemes; r++)
722 suites[w++] = cs[r].cipher;
723 } else {
724 /* Driver provides cipher suites, but we need to exclude WEP */
725 suites = kmemdup(local->hw.wiphy->cipher_suites,
726 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
727 GFP_KERNEL);
728 if (!suites)
729 return -ENOMEM;
730
731 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
732 u32 suite = local->hw.wiphy->cipher_suites[r];
733
734 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
735 suite == WLAN_CIPHER_SUITE_WEP104)
736 continue;
737 suites[w++] = suite;
738 }
739 }
740
741 local->hw.wiphy->cipher_suites = suites;
742 local->hw.wiphy->n_cipher_suites = w;
743 local->wiphy_ciphers_allocated = true;
744
745 return 0;
746}
747
748int ieee80211_register_hw(struct ieee80211_hw *hw)
749{
750 struct ieee80211_local *local = hw_to_local(hw);
751 int result, i;
752 enum ieee80211_band band;
753 int channels, max_bitrates;
754 bool supp_ht, supp_vht;
755 netdev_features_t feature_whitelist;
756 struct cfg80211_chan_def dflt_chandef = {};
757
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200758 if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
759 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
760 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
761 return -EINVAL;
762
Larry Finger38bb3e92011-05-05 18:48:47 -0500763#ifdef CONFIG_PM
Johannes Berg964dc9e2013-06-03 17:25:34 +0200764 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
Johannes Bergeecc4802011-05-04 15:37:29 +0200765 return -EINVAL;
Johannes Bergdfb89c52012-06-27 09:23:48 +0200766#endif
Johannes Bergeecc4802011-05-04 15:37:29 +0200767
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200768 if (!local->use_chanctx) {
769 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
770 const struct ieee80211_iface_combination *comb;
771
772 comb = &local->hw.wiphy->iface_combinations[i];
773
774 if (comb->num_different_channels > 1)
775 return -EINVAL;
776 }
Johannes Berg746a3362012-10-22 15:20:53 +0200777 } else {
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200778 /*
779 * WDS is currently prohibited when channel contexts are used
780 * because there's no clear definition of which channel WDS
781 * type interfaces use
782 */
783 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
784 return -EINVAL;
Simon Wunderlich164eb022013-02-08 18:16:20 +0100785
786 /* DFS currently not supported with channel context drivers */
787 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
788 const struct ieee80211_iface_combination *comb;
789
790 comb = &local->hw.wiphy->iface_combinations[i];
791
792 if (comb->radar_detect_widths)
793 return -EINVAL;
794 }
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200795 }
796
Arik Nemtsov72d78722012-05-10 16:18:26 +0300797 /* Only HW csum features are currently compatible with mac80211 */
798 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
799 NETIF_F_HW_CSUM;
800 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
801 return -EINVAL;
802
Helmut Schaa78be49e2010-10-02 11:31:55 +0200803 if (hw->max_report_rates == 0)
804 hw->max_report_rates = hw->max_rates;
805
Johannes Berg04ecd252012-09-11 14:34:12 +0200806 local->rx_chains = 1;
807
Johannes Berg8318d782008-01-24 19:38:38 +0100808 /*
809 * generic code guarantees at least one band,
810 * set this very early because much code assumes
811 * that hw.conf.channel is assigned
812 */
Johannes Berg2a519312009-02-10 21:25:55 +0100813 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200814 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200815 supp_ht = false;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000816 supp_vht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100817 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
818 struct ieee80211_supported_band *sband;
819
820 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200821 if (!sband)
822 continue;
Karl Beldanfffa4b12013-04-15 19:04:06 +0200823
824 if (!dflt_chandef.chan) {
825 cfg80211_chandef_create(&dflt_chandef,
826 &sband->channels[0],
827 NL80211_CHAN_NO_HT);
Johannes Berg8318d782008-01-24 19:38:38 +0100828 /* init channel we're on */
Karl Beldanfffa4b12013-04-15 19:04:06 +0200829 if (!local->use_chanctx && !local->_oper_chandef.chan) {
830 local->hw.conf.chandef = dflt_chandef;
831 local->_oper_chandef = dflt_chandef;
832 }
833 local->monitor_chandef = dflt_chandef;
Johannes Berg8318d782008-01-24 19:38:38 +0100834 }
Karl Beldanfffa4b12013-04-15 19:04:06 +0200835
Johannes Bergde95a542009-04-01 11:58:36 +0200836 channels += sband->n_channels;
837
838 if (max_bitrates < sband->n_bitrates)
839 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200840 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000841 supp_vht = supp_vht || sband->vht_cap.vht_supported;
Johannes Berg04ecd252012-09-11 14:34:12 +0200842
843 if (sband->ht_cap.ht_supported)
844 local->rx_chains =
845 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
846 local->rx_chains);
847
848 /* TODO: consider VHT for RX chains, hopefully it's the same */
Johannes Berg8318d782008-01-24 19:38:38 +0100849 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700850
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700851 /* if low-level driver supports AP, we also support VLAN */
Johannes Berg7527a782011-05-13 10:58:57 +0200852 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
853 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
854 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
855 }
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700856
857 /* mac80211 always supports monitor */
Johannes Berg7527a782011-05-13 10:58:57 +0200858 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
859 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
860
Johannes Berg55de9082012-07-26 17:24:39 +0200861 /* mac80211 doesn't support more than one IBSS interface right now */
Johannes Berg8e621fc2011-05-14 01:55:23 +0200862 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
863 const struct ieee80211_iface_combination *c;
864 int j;
865
866 c = &hw->wiphy->iface_combinations[i];
867
Johannes Berg8e621fc2011-05-14 01:55:23 +0200868 for (j = 0; j < c->n_limits; j++)
869 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
870 c->limits[j].max > 1)
871 return -EINVAL;
872 }
873
Johannes Berg5b0ec942014-01-06 16:02:34 +0100874 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
875 sizeof(void *) * channels, GFP_KERNEL);
876 if (!local->int_scan_req)
877 return -ENOMEM;
878
879 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
880 if (!local->hw.wiphy->bands[band])
881 continue;
882 local->int_scan_req->rates[band] = (u32) -1;
883 }
884
Johannes Berg5eb5a522010-08-25 14:34:01 +0200885#ifndef CONFIG_MAC80211_MESH
886 /* mesh depends on Kconfig, but drivers should set it if they want */
887 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
888#endif
889
Javier Cardona1570ca52011-04-07 15:08:35 -0700890 /* if the underlying driver supports mesh, mac80211 will (at least)
891 * provide routing of mesh authentication frames to userspace */
892 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
893 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
894
Johannes Berga621fa42010-08-27 14:26:54 +0300895 /* mac80211 supports control port protocol changing */
896 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
897
andrea merello52512072014-01-19 22:21:49 +0100898 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
Johannes Berg77965c92009-02-18 18:45:06 +0100899 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
andrea merello52512072014-01-19 22:21:49 +0100900 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
Johannes Berg77965c92009-02-18 18:45:06 +0100901 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
andrea merello52512072014-01-19 22:21:49 +0100902 if (hw->max_signal <= 0) {
903 result = -EINVAL;
904 goto fail_wiphy_register;
905 }
906 }
Johannes Berg77965c92009-02-18 18:45:06 +0100907
Kalle Valoab133152010-01-12 10:42:31 +0200908 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
909 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
910 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
911
Johannes Bergde95a542009-04-01 11:58:36 +0200912 /*
913 * Calculate scan IE length -- we need this to alloc
914 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300915 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200916 * information -- SSID is the driver's responsibility.
917 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300918 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
919 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200920 if (supp_ht)
921 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200922
Karl Beldand0e6c212013-03-25 16:26:58 +0100923 if (supp_vht)
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000924 local->scan_ies_len +=
Mahesh Palivelad4950282012-10-10 11:25:40 +0000925 2 + sizeof(struct ieee80211_vht_cap);
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000926
Johannes Bergde95a542009-04-01 11:58:36 +0200927 if (!local->ops->hw_scan) {
928 /* For hw_scan, driver needs to set these up. */
929 local->hw.wiphy->max_scan_ssids = 4;
930 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
931 }
932
933 /*
934 * If the driver supports any scan IEs, then assume the
935 * limit includes the IEs mac80211 will add, otherwise
936 * leave it at zero and let the driver sort it out; we
937 * still pass our IEs to the driver but userspace will
938 * not be allowed to in that case.
939 */
940 if (local->hw.wiphy->max_scan_ie_len)
941 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
942
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200943 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
944 local->hw.n_cipher_schemes));
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300945
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200946 result = ieee80211_init_cipher_suites(local);
947 if (result < 0)
948 goto fail_wiphy_register;
Johannes Berg25e47c12009-04-02 20:14:06 +0200949
Johannes Berg21f83582010-12-18 17:20:47 +0100950 if (!local->ops->remain_on_channel)
951 local->hw.wiphy->max_remain_on_channel_duration = 5000;
Johannes Berga2939112010-12-14 17:54:28 +0100952
Arik Nemtsovdfe018b2011-09-28 14:12:52 +0300953 /* mac80211 based drivers don't support internal TDLS setup */
954 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
955 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
956
Jiri Bencf0706e82007-05-05 11:45:53 -0700957 result = wiphy_register(local->hw.wiphy);
958 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +0100959 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -0700960
Johannes Berge2530082008-05-17 00:57:14 +0200961 /*
962 * We use the number of queues for feature tests (QoS, HT) internally
963 * so restrict them appropriately.
964 */
Johannes Berge2530082008-05-17 00:57:14 +0200965 if (hw->queues > IEEE80211_MAX_QUEUES)
966 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +0200967
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400968 local->workqueue =
Kees Cookd8537542013-07-03 15:04:57 -0700969 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400970 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -0700971 result = -ENOMEM;
972 goto fail_workqueue;
973 }
974
Johannes Bergb306f452007-07-10 19:32:08 +0200975 /*
976 * The hardware needs headroom for sending the frame,
977 * and we need some headroom for passing the frame to monitor
978 * interfaces, but never both at the same time.
979 */
Jiri Benc33ccad32007-07-18 17:10:44 +0200980 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200981 IEEE80211_TX_STATUS_HEADROOM);
Johannes Bergb306f452007-07-10 19:32:08 +0200982
Jiri Bence9f207f2007-05-05 11:46:38 -0700983 debugfs_hw_add(local);
984
Helmut Schaab4469182010-02-24 14:19:37 +0100985 /*
986 * if the driver doesn't specify a max listen interval we
987 * use 5 which should be a safe default
988 */
Tomas Winklerea95bba2008-07-18 13:53:00 +0800989 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +0100990 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +0800991
992 local->hw.conf.listen_interval = local->hw.max_listen_interval;
993
Juuso Oikarinenff616382010-06-09 09:51:52 +0300994 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +0300995
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100996 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -0400997 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700998 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
999 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001000
Karl Beldan24d47302013-11-19 17:12:05 +01001001 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1002
Mohammed Shafi Shajakhanb57e6b52012-02-09 19:59:43 +05301003 ieee80211_led_init(local);
1004
Jiri Bencf0706e82007-05-05 11:45:53 -07001005 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -07001006
Johannes Berg830f9032007-10-28 14:51:05 +01001007 result = ieee80211_init_rate_ctrl_alg(local,
1008 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -07001009 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001010 wiphy_debug(local->hw.wiphy,
1011 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001012 goto fail_rate;
1013 }
1014
Johannes Berg8dffff22008-12-09 00:10:30 +01001015 /* add one default STA interface if supported */
1016 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
1017 result = ieee80211_if_add(local, "wlan%d", NULL,
1018 NL80211_IFTYPE_STATION, NULL);
1019 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001020 wiphy_warn(local->hw.wiphy,
1021 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +01001022 }
Jiri Bencf0706e82007-05-05 11:45:53 -07001023
Jiri Bencf0706e82007-05-05 11:45:53 -07001024 rtnl_unlock();
1025
Johannes Berg10f644a2009-04-16 13:17:25 +02001026 local->network_latency_notifier.notifier_call =
1027 ieee80211_max_network_latency;
1028 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
1029 &local->network_latency_notifier);
Johannes Berg10f644a2009-04-16 13:17:25 +02001030 if (result) {
1031 rtnl_lock();
1032 goto fail_pm_qos;
1033 }
1034
John W. Linville26b36cf2010-06-04 14:25:44 -04001035#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001036 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1037 result = register_inetaddr_notifier(&local->ifa_notifier);
1038 if (result)
1039 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -04001040#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001041
Johannes Berga65240c2013-01-14 15:14:34 +01001042#if IS_ENABLED(CONFIG_IPV6)
1043 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1044 result = register_inet6addr_notifier(&local->ifa6_notifier);
1045 if (result)
1046 goto fail_ifa6;
1047#endif
1048
Jiri Bencf0706e82007-05-05 11:45:53 -07001049 return 0;
1050
Johannes Berga65240c2013-01-14 15:14:34 +01001051#if IS_ENABLED(CONFIG_IPV6)
1052 fail_ifa6:
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001053#ifdef CONFIG_INET
Johannes Berga65240c2013-01-14 15:14:34 +01001054 unregister_inetaddr_notifier(&local->ifa_notifier);
1055#endif
1056#endif
1057#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001058 fail_ifa:
1059 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1060 &local->network_latency_notifier);
1061 rtnl_lock();
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001062#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001063 fail_pm_qos:
1064 ieee80211_led_exit(local);
1065 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +02001066 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -07001067 rtnl_unlock();
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001068 ieee80211_wep_free(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001069 sta_info_stop(local);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001070 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +02001071 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -07001072 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +02001073 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001074 if (local->wiphy_ciphers_allocated)
1075 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +02001076 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001077 return result;
1078}
1079EXPORT_SYMBOL(ieee80211_register_hw);
1080
Johannes Berg06d181a2014-02-04 20:51:09 +01001081void ieee80211_napi_add(struct ieee80211_hw *hw, struct napi_struct *napi,
1082 struct net_device *napi_dev,
1083 int (*poll)(struct napi_struct *, int),
1084 int weight)
1085{
1086 struct ieee80211_local *local = hw_to_local(hw);
1087
1088 netif_napi_add(napi_dev, napi, poll, weight);
1089 local->napi = napi;
1090}
1091EXPORT_SYMBOL_GPL(ieee80211_napi_add);
1092
Jiri Bencf0706e82007-05-05 11:45:53 -07001093void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1094{
1095 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001096
1097 tasklet_kill(&local->tx_pending_tasklet);
1098 tasklet_kill(&local->tasklet);
1099
Johannes Berg10f644a2009-04-16 13:17:25 +02001100 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1101 &local->network_latency_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001102#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001103 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001104#endif
Johannes Berga65240c2013-01-14 15:14:34 +01001105#if IS_ENABLED(CONFIG_IPV6)
1106 unregister_inet6addr_notifier(&local->ifa6_notifier);
1107#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001108
Jiri Bencf0706e82007-05-05 11:45:53 -07001109 rtnl_lock();
1110
Johannes Berg79010422007-09-18 17:29:21 -04001111 /*
1112 * At this point, interface list manipulations are fine
1113 * because the driver cannot be handing us frames any
1114 * more and the tasklet is killed.
1115 */
Johannes Berg75636522008-07-09 14:40:35 +02001116 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +02001117
Jiri Bencf0706e82007-05-05 11:45:53 -07001118 rtnl_unlock();
1119
Christian Lamparter258086a2010-08-22 23:48:25 +02001120 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001121 cancel_work_sync(&local->reconfig_filter);
Johannes Berg18db5942013-11-06 10:34:36 +01001122 flush_work(&local->sched_scan_stopped_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001123
Jiri Bencf0706e82007-05-05 11:45:53 -07001124 ieee80211_clear_tx_pending(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001125 rate_control_deinitialize(local);
1126
Joe Perchesf64f9e72009-11-29 16:55:45 -08001127 if (skb_queue_len(&local->skb_queue) ||
1128 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001129 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001130 skb_queue_purge(&local->skb_queue);
1131 skb_queue_purge(&local->skb_queue_unreliable);
1132
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001133 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001134 wiphy_unregister(local->hw.wiphy);
Stanislaw Gruszkaecb44332011-08-12 14:00:59 +02001135 sta_info_stop(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001136 ieee80211_wep_free(local);
1137 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +02001138 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001139}
1140EXPORT_SYMBOL(ieee80211_unregister_hw);
1141
Johannes Berga729cff2011-11-06 14:13:34 +01001142static int ieee80211_free_ack_frame(int id, void *p, void *data)
1143{
1144 WARN_ONCE(1, "Have pending ack frames!\n");
1145 kfree_skb(p);
1146 return 0;
1147}
1148
Jiri Bencf0706e82007-05-05 11:45:53 -07001149void ieee80211_free_hw(struct ieee80211_hw *hw)
1150{
1151 struct ieee80211_local *local = hw_to_local(hw);
1152
Johannes Bergc771c9d2009-01-23 22:54:03 +01001153 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +02001154 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +01001155
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001156 if (local->wiphy_ciphers_allocated)
1157 kfree(local->hw.wiphy->cipher_suites);
1158
Johannes Berga729cff2011-11-06 14:13:34 +01001159 idr_for_each(&local->ack_status_frames,
1160 ieee80211_free_ack_frame, NULL);
1161 idr_destroy(&local->ack_status_frames);
1162
Matti Gottliebad38bfc2013-11-18 19:06:45 +02001163 kfree(rcu_access_pointer(local->tx_latency));
1164
Jiri Bencf0706e82007-05-05 11:45:53 -07001165 wiphy_free(local->hw.wiphy);
1166}
1167EXPORT_SYMBOL(ieee80211_free_hw);
1168
Jiri Bencf0706e82007-05-05 11:45:53 -07001169static int __init ieee80211_init(void)
1170{
1171 struct sk_buff *skb;
1172 int ret;
1173
Johannes Berge039fa42008-05-15 12:55:29 +02001174 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1175 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +02001176 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -07001177
Felix Fietkaucccf1292008-10-05 18:07:45 +02001178 ret = rc80211_minstrel_init();
1179 if (ret)
1180 return ret;
1181
Felix Fietkauec8aa662010-05-13 16:48:03 +02001182 ret = rc80211_minstrel_ht_init();
1183 if (ret)
1184 goto err_minstrel;
1185
Johannes Berg4b475892008-01-02 15:17:03 +01001186 ret = rc80211_pid_init();
Mattias Nisslerad018372007-12-19 01:25:57 +01001187 if (ret)
Johannes Berg47846c92009-11-25 17:46:19 +01001188 goto err_pid;
Jiri Bencf0706e82007-05-05 11:45:53 -07001189
Johannes Berg47846c92009-11-25 17:46:19 +01001190 ret = ieee80211_iface_init();
1191 if (ret)
1192 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -07001193
Jiri Bencf0706e82007-05-05 11:45:53 -07001194 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +01001195 err_netdev:
1196 rc80211_pid_exit();
1197 err_pid:
Felix Fietkauec8aa662010-05-13 16:48:03 +02001198 rc80211_minstrel_ht_exit();
1199 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +01001200 rc80211_minstrel_exit();
1201
1202 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -07001203}
1204
Jiri Bencf0706e82007-05-05 11:45:53 -07001205static void __exit ieee80211_exit(void)
1206{
Johannes Berg4b475892008-01-02 15:17:03 +01001207 rc80211_pid_exit();
Felix Fietkauec8aa662010-05-13 16:48:03 +02001208 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +02001209 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +01001210
Johannes Bergbf7cd942013-02-15 14:40:31 +01001211 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001212
Johannes Berg47846c92009-11-25 17:46:19 +01001213 ieee80211_iface_exit();
Johannes Bergd07c7cf2011-05-14 11:04:51 +02001214
1215 rcu_barrier();
Jiri Bencf0706e82007-05-05 11:45:53 -07001216}
1217
1218
Johannes Bergca9938f2007-09-11 12:50:32 +02001219subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -07001220module_exit(ieee80211_exit);
1221
1222MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1223MODULE_LICENSE("GPL");