blob: 09a27449f3fd209ecdf0d42da291ef7120baf8d4 [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>
Johannes Berg10f644a2009-04-16 13:17:25 +020022#include <linux/pm_qos_params.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>
26
Jiri Bencf0706e82007-05-05 11:45:53 -070027#include "ieee80211_i.h"
Johannes Berg24487982009-04-23 18:52:52 +020028#include "driver-ops.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040029#include "rate.h"
Luis Carlos Cobof7a92142008-02-23 15:17:18 +010030#include "mesh.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070031#include "wep.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040032#include "led.h"
Michael Wue0eb6852007-09-18 17:29:21 -040033#include "cfg.h"
Jiri Bence9f207f2007-05-05 11:46:38 -070034#include "debugfs.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070035
Johannes Bergf38fd122009-12-01 18:29:42 +010036
37bool ieee80211_disable_40mhz_24ghz;
38module_param(ieee80211_disable_40mhz_24ghz, bool, 0644);
39MODULE_PARM_DESC(ieee80211_disable_40mhz_24ghz,
40 "Disable 40MHz support in the 2.4GHz band");
41
Johannes Berg681c4d02011-01-12 13:40:33 +010042static struct lock_class_key ieee80211_rx_skb_queue_class;
43
Johannes Berg0d143fe2008-09-11 00:01:59 +020044void ieee80211_configure_filter(struct ieee80211_local *local)
Johannes Berg4150c572007-09-17 01:29:23 -040045{
Johannes Berg3ac64be2009-08-17 16:16:53 +020046 u64 mc;
Johannes Berg4150c572007-09-17 01:29:23 -040047 unsigned int changed_flags;
48 unsigned int new_flags = 0;
49
Johannes Berg53918992007-09-26 15:19:47 +020050 if (atomic_read(&local->iff_promiscs))
Johannes Berg4150c572007-09-17 01:29:23 -040051 new_flags |= FIF_PROMISC_IN_BSS;
52
Johannes Berg53918992007-09-26 15:19:47 +020053 if (atomic_read(&local->iff_allmultis))
Johannes Berg4150c572007-09-17 01:29:23 -040054 new_flags |= FIF_ALLMULTI;
55
Johannes Berg3ac64be2009-08-17 16:16:53 +020056 if (local->monitors || local->scanning)
Michael Wu8cc9a732008-01-31 19:48:23 +010057 new_flags |= FIF_BCN_PRBRESP_PROMISC;
58
Johannes Berg7be50862010-10-13 12:06:24 +020059 if (local->fif_probe_req || local->probe_req_reg)
60 new_flags |= FIF_PROBE_REQ;
61
Michael Wu8cc9a732008-01-31 19:48:23 +010062 if (local->fif_fcsfail)
63 new_flags |= FIF_FCSFAIL;
64
65 if (local->fif_plcpfail)
66 new_flags |= FIF_PLCPFAIL;
67
68 if (local->fif_control)
69 new_flags |= FIF_CONTROL;
70
71 if (local->fif_other_bss)
72 new_flags |= FIF_OTHER_BSS;
Johannes Berg4150c572007-09-17 01:29:23 -040073
Igor Perminove3b90ca2009-08-04 16:48:51 +040074 if (local->fif_pspoll)
75 new_flags |= FIF_PSPOLL;
76
Johannes Berg3ac64be2009-08-17 16:16:53 +020077 spin_lock_bh(&local->filter_lock);
Johannes Berg4150c572007-09-17 01:29:23 -040078 changed_flags = local->filter_flags ^ new_flags;
79
Jiri Pirko22bedad32010-04-01 21:22:57 +000080 mc = drv_prepare_multicast(local, &local->mc_list);
Johannes Berg3ac64be2009-08-17 16:16:53 +020081 spin_unlock_bh(&local->filter_lock);
82
Johannes Berg4150c572007-09-17 01:29:23 -040083 /* be a bit nasty */
84 new_flags |= (1<<31);
85
Johannes Berg3ac64be2009-08-17 16:16:53 +020086 drv_configure_filter(local, changed_flags, &new_flags, mc);
Johannes Berg4150c572007-09-17 01:29:23 -040087
88 WARN_ON(new_flags & (1<<31));
89
90 local->filter_flags = new_flags & ~(1<<31);
91}
92
Johannes Berg3ac64be2009-08-17 16:16:53 +020093static void ieee80211_reconfig_filter(struct work_struct *work)
94{
95 struct ieee80211_local *local =
96 container_of(work, struct ieee80211_local, reconfig_filter);
97
98 ieee80211_configure_filter(local);
99}
100
Johannes Berge8975582008-10-09 12:18:51 +0200101int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
Johannes Bergb2c258f2007-07-27 15:43:23 +0200102{
Johannes Berg58905ca2009-05-07 14:23:01 +0200103 struct ieee80211_channel *chan, *scan_chan;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200104 int ret = 0;
Johannes Berge8975582008-10-09 12:18:51 +0200105 int power;
Sujith094d05d2008-12-12 11:57:43 +0530106 enum nl80211_channel_type channel_type;
Felix Fietkauffd27782010-07-29 17:36:43 +0200107 u32 offchannel_flag;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200108
Johannes Bergcb121ba2008-10-14 16:38:55 +0200109 might_sleep();
110
Johannes Berg58905ca2009-05-07 14:23:01 +0200111 scan_chan = local->scan_channel;
112
Felix Fietkauffd27782010-07-29 17:36:43 +0200113 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berg58905ca2009-05-07 14:23:01 +0200114 if (scan_chan) {
115 chan = scan_chan;
Sujith094d05d2008-12-12 11:57:43 +0530116 channel_type = NL80211_CHAN_NO_HT;
Felix Fietkau45521242010-07-28 02:40:49 +0200117 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
Luis R. Rodriguez8d4780e2010-09-24 21:59:57 -0400118 } else if (local->tmp_channel &&
119 local->oper_channel != local->tmp_channel) {
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100120 chan = scan_chan = local->tmp_channel;
121 channel_type = local->tmp_channel_type;
Felix Fietkau45521242010-07-28 02:40:49 +0200122 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200123 } else {
Johannes Bergb2c258f2007-07-27 15:43:23 +0200124 chan = local->oper_channel;
Johannes Berg0aaffa92010-05-05 15:28:27 +0200125 channel_type = local->_oper_channel_type;
Felix Fietkau45521242010-07-28 02:40:49 +0200126 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200127 }
Felix Fietkauffd27782010-07-29 17:36:43 +0200128 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200129
Felix Fietkauffd27782010-07-29 17:36:43 +0200130 if (offchannel_flag || chan != local->hw.conf.channel ||
Johannes Berg47979382009-01-07 10:13:27 +0100131 channel_type != local->hw.conf.channel_type) {
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200132 local->hw.conf.channel = chan;
Johannes Berg47979382009-01-07 10:13:27 +0100133 local->hw.conf.channel_type = channel_type;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200134 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
135 }
Johannes Berg8318d782008-01-24 19:38:38 +0100136
Johannes Berg0f782312009-12-01 13:37:02 +0100137 if (!conf_is_ht(&local->hw.conf)) {
138 /*
139 * mac80211.h documents that this is only valid
140 * when the channel is set to an HT type, and
141 * that otherwise STATIC is used.
142 */
143 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
144 } else if (local->hw.conf.smps_mode != local->smps_mode) {
145 local->hw.conf.smps_mode = local->smps_mode;
146 changed |= IEEE80211_CONF_CHANGE_SMPS;
147 }
148
Johannes Berg58905ca2009-05-07 14:23:01 +0200149 if (scan_chan)
Johannes Berge8975582008-10-09 12:18:51 +0200150 power = chan->max_power;
Johannes Berg8318d782008-01-24 19:38:38 +0100151 else
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530152 power = local->power_constr_level ?
153 (chan->max_power - local->power_constr_level) :
154 chan->max_power;
155
Johannes Berg47afbaf2009-04-07 15:22:28 +0200156 if (local->user_power_level >= 0)
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530157 power = min(power, local->user_power_level);
158
Johannes Berge8975582008-10-09 12:18:51 +0200159 if (local->hw.conf.power_level != power) {
160 changed |= IEEE80211_CONF_CHANGE_POWER;
161 local->hw.conf.power_level = power;
162 }
Johannes Berg8318d782008-01-24 19:38:38 +0100163
Johannes Berge8975582008-10-09 12:18:51 +0200164 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200165 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200166 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800167 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200168 * HW reconfiguration should never fail, the driver has told
169 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800170 *
171 * Current status:
172 * rfkill is not integrated with mac80211 and a
173 * configuration command can thus fail if hardware rfkill
174 * is enabled
175 *
176 * FIXME: integrate rfkill with mac80211 and then add this
177 * WARN_ON() back
178 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200179 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800180 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200181 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200182
183 return ret;
184}
185
Johannes Berg471b3ef2007-12-28 14:32:58 +0100186void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
187 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200188{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100189 struct ieee80211_local *local = sdata->local;
Johannes Berg9cef8732009-05-14 13:10:14 +0200190 static const u8 zero[ETH_ALEN] = { 0 };
Johannes Berg471b3ef2007-12-28 14:32:58 +0100191
192 if (!changed)
193 return;
194
Johannes Berg9cef8732009-05-14 13:10:14 +0200195 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
196 /*
197 * While not associated, claim a BSSID of all-zeroes
198 * so that drivers don't do any weird things with the
199 * BSSID at that time.
200 */
201 if (sdata->vif.bss_conf.assoc)
202 sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
203 else
204 sdata->vif.bss_conf.bssid = zero;
205 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200206 sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
207 else if (sdata->vif.type == NL80211_IFTYPE_AP)
Johannes Berg47846c92009-11-25 17:46:19 +0100208 sdata->vif.bss_conf.bssid = sdata->vif.addr;
Bill Jordan1be7fe82010-10-01 11:20:41 -0400209 else if (sdata->vif.type == NL80211_IFTYPE_WDS)
210 sdata->vif.bss_conf.bssid = NULL;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200211 else if (ieee80211_vif_is_mesh(&sdata->vif)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200212 sdata->vif.bss_conf.bssid = zero;
213 } else {
214 WARN_ON(1);
215 return;
216 }
217
218 switch (sdata->vif.type) {
219 case NL80211_IFTYPE_AP:
220 case NL80211_IFTYPE_ADHOC:
Bill Jordan1be7fe82010-10-01 11:20:41 -0400221 case NL80211_IFTYPE_WDS:
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200222 case NL80211_IFTYPE_MESH_POINT:
223 break;
224 default:
225 /* do not warn to simplify caller in scan.c */
226 changed &= ~BSS_CHANGED_BEACON_ENABLED;
227 if (WARN_ON(changed & BSS_CHANGED_BEACON))
228 return;
229 break;
230 }
231
232 if (changed & BSS_CHANGED_BEACON_ENABLED) {
Johannes Berg9607e6b662009-12-23 13:15:31 +0100233 if (local->quiescing || !ieee80211_sdata_running(sdata) ||
Bob Copeland97af7432009-07-29 10:13:03 +0200234 test_bit(SCAN_SW_SCANNING, &local->scanning)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200235 sdata->vif.bss_conf.enable_beacon = false;
236 } else {
237 /*
238 * Beacon should be enabled, but AP mode must
239 * check whether there is a beacon configured.
240 */
241 switch (sdata->vif.type) {
242 case NL80211_IFTYPE_AP:
243 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200244 !!sdata->u.ap.beacon;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200245 break;
246 case NL80211_IFTYPE_ADHOC:
247 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200248 !!sdata->u.ibss.presp;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200249 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800250#ifdef CONFIG_MAC80211_MESH
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200251 case NL80211_IFTYPE_MESH_POINT:
Johannes Berg29cbe682010-12-03 09:20:44 +0100252 sdata->vif.bss_conf.enable_beacon =
253 !!sdata->u.mesh.mesh_id_len;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200254 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800255#endif
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200256 default:
257 /* not reached */
258 WARN_ON(1);
259 break;
260 }
261 }
262 }
263
Johannes Berg12375ef2009-11-25 20:30:31 +0100264 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200265}
266
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200267u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200268{
Johannes Bergbda39332008-10-11 01:51:51 +0200269 sdata->vif.bss_conf.use_cts_prot = false;
270 sdata->vif.bss_conf.use_short_preamble = false;
271 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200272 return BSS_CHANGED_ERP_CTS_PROT |
273 BSS_CHANGED_ERP_PREAMBLE |
274 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200275}
276
Jiri Bencf0706e82007-05-05 11:45:53 -0700277static void ieee80211_tasklet_handler(unsigned long data)
278{
279 struct ieee80211_local *local = (struct ieee80211_local *) data;
280 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700281
282 while ((skb = skb_dequeue(&local->skb_queue)) ||
283 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
284 switch (skb->pkt_type) {
285 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100286 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700287 * netstack. */
288 skb->pkt_type = 0;
Johannes Bergf1d58c22009-06-17 13:13:00 +0200289 ieee80211_rx(local_to_hw(local), skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700290 break;
291 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700292 skb->pkt_type = 0;
Johannes Berge039fa42008-05-15 12:55:29 +0200293 ieee80211_tx_status(local_to_hw(local), skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700294 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200295 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600296 WARN(1, "mac80211: Packet is of unknown type %d\n",
297 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700298 dev_kfree_skb(skb);
299 break;
300 }
301 }
302}
303
Johannes Bergf2753dd2009-04-14 10:09:24 +0200304static void ieee80211_restart_work(struct work_struct *work)
305{
306 struct ieee80211_local *local =
307 container_of(work, struct ieee80211_local, restart_work);
308
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200309 /* wait for scan work complete */
310 flush_workqueue(local->workqueue);
311
312 mutex_lock(&local->mtx);
313 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
314 "%s called with hardware scan in progress\n", __func__);
315 mutex_unlock(&local->mtx);
316
Johannes Bergf2753dd2009-04-14 10:09:24 +0200317 rtnl_lock();
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200318 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200319 ieee80211_reconfig(local);
320 rtnl_unlock();
321}
322
323void ieee80211_restart_hw(struct ieee80211_hw *hw)
324{
325 struct ieee80211_local *local = hw_to_local(hw);
326
Johannes Bergb5878a22010-04-07 16:48:40 +0200327 trace_api_restart_hw(local);
328
John W. Linville18145c62010-08-30 15:12:02 -0400329 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Bergf2753dd2009-04-14 10:09:24 +0200330 ieee80211_stop_queues_by_reason(hw,
331 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
332
333 schedule_work(&local->restart_work);
334}
335EXPORT_SYMBOL(ieee80211_restart_hw);
336
Johannes Berg0f782312009-12-01 13:37:02 +0100337static void ieee80211_recalc_smps_work(struct work_struct *work)
338{
339 struct ieee80211_local *local =
340 container_of(work, struct ieee80211_local, recalc_smps);
341
342 mutex_lock(&local->iflist_mtx);
Johannes Berg025e6be2010-10-05 10:41:47 +0200343 ieee80211_recalc_smps(local);
Johannes Berg0f782312009-12-01 13:37:02 +0100344 mutex_unlock(&local->iflist_mtx);
345}
346
John W. Linville26b36cf2010-06-04 14:25:44 -0400347#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300348static int ieee80211_ifa_changed(struct notifier_block *nb,
349 unsigned long data, void *arg)
350{
351 struct in_ifaddr *ifa = arg;
352 struct ieee80211_local *local =
353 container_of(nb, struct ieee80211_local,
354 ifa_notifier);
355 struct net_device *ndev = ifa->ifa_dev->dev;
356 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300357 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300358 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300359 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300360 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300361 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300362
363 /* Make sure it's our interface that got changed */
364 if (!wdev)
365 return NOTIFY_DONE;
366
367 if (wdev->wiphy != local->hw.wiphy)
368 return NOTIFY_DONE;
369
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300370 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300371 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300372
Johannes Berg26a58452010-08-27 12:35:55 +0200373 if (!ieee80211_sdata_running(sdata))
374 return NOTIFY_DONE;
375
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300376 /* ARP filtering is only supported in managed mode */
377 if (sdata->vif.type != NL80211_IFTYPE_STATION)
378 return NOTIFY_DONE;
379
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000380 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300381 if (!idev)
382 return NOTIFY_DONE;
383
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300384 ifmgd = &sdata->u.mgd;
385 mutex_lock(&ifmgd->mtx);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300386
387 /* Copy the addresses to the bss_conf list */
388 ifa = idev->ifa_list;
389 while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
390 bss_conf->arp_addr_list[c] = ifa->ifa_address;
391 ifa = ifa->ifa_next;
392 c++;
393 }
394
395 /* If not all addresses fit the list, disable filtering */
396 if (ifa) {
397 sdata->arp_filter_state = false;
398 c = 0;
399 } else {
400 sdata->arp_filter_state = true;
401 }
402 bss_conf->arp_addr_cnt = c;
403
404 /* Configure driver only if associated */
405 if (ifmgd->associated) {
406 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
407 ieee80211_bss_info_change_notify(sdata,
408 BSS_CHANGED_ARP_FILTER);
409 }
410
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300411 mutex_unlock(&ifmgd->mtx);
412
413 return NOTIFY_DONE;
414}
John W. Linville26b36cf2010-06-04 14:25:44 -0400415#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300416
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400417static int ieee80211_napi_poll(struct napi_struct *napi, int budget)
418{
419 struct ieee80211_local *local =
420 container_of(napi, struct ieee80211_local, napi);
421
422 return local->ops->napi_poll(&local->hw, budget);
423}
424
425void ieee80211_napi_schedule(struct ieee80211_hw *hw)
426{
427 struct ieee80211_local *local = hw_to_local(hw);
428
429 napi_schedule(&local->napi);
430}
431EXPORT_SYMBOL(ieee80211_napi_schedule);
432
433void ieee80211_napi_complete(struct ieee80211_hw *hw)
434{
435 struct ieee80211_local *local = hw_to_local(hw);
436
437 napi_complete(&local->napi);
438}
439EXPORT_SYMBOL(ieee80211_napi_complete);
440
Johannes Berg2e161f72010-08-12 15:38:38 +0200441/* There isn't a lot of sense in it, but you can transmit anything you like */
442static const struct ieee80211_txrx_stypes
443ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
444 [NL80211_IFTYPE_ADHOC] = {
445 .tx = 0xffff,
446 .rx = BIT(IEEE80211_STYPE_ACTION >> 4),
447 },
448 [NL80211_IFTYPE_STATION] = {
449 .tx = 0xffff,
450 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
451 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
452 },
453 [NL80211_IFTYPE_AP] = {
454 .tx = 0xffff,
455 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
456 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
457 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
458 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
459 BIT(IEEE80211_STYPE_AUTH >> 4) |
460 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
461 BIT(IEEE80211_STYPE_ACTION >> 4),
462 },
463 [NL80211_IFTYPE_AP_VLAN] = {
464 /* copy AP */
465 .tx = 0xffff,
466 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
467 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
468 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
469 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
470 BIT(IEEE80211_STYPE_AUTH >> 4) |
471 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
472 BIT(IEEE80211_STYPE_ACTION >> 4),
473 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200474 [NL80211_IFTYPE_P2P_CLIENT] = {
475 .tx = 0xffff,
476 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
477 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
478 },
479 [NL80211_IFTYPE_P2P_GO] = {
480 .tx = 0xffff,
481 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
482 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
483 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
484 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
485 BIT(IEEE80211_STYPE_AUTH >> 4) |
486 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
487 BIT(IEEE80211_STYPE_ACTION >> 4),
488 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800489 [NL80211_IFTYPE_MESH_POINT] = {
490 .tx = 0xffff,
491 .rx = BIT(IEEE80211_STYPE_ACTION >> 4),
492 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200493};
494
Jiri Bencf0706e82007-05-05 11:45:53 -0700495struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
496 const struct ieee80211_ops *ops)
497{
Jiri Bencf0706e82007-05-05 11:45:53 -0700498 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100499 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700500 struct wiphy *wiphy;
501
502 /* Ensure 32-byte alignment of our private data and hw private data.
503 * We use the wiphy priv data for both our ieee80211_local and for
504 * the driver's private data
505 *
506 * In memory it'll be like this:
507 *
508 * +-------------------------+
509 * | struct wiphy |
510 * +-------------------------+
511 * | struct ieee80211_local |
512 * +-------------------------+
513 * | driver's private data |
514 * +-------------------------+
515 *
516 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000517 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700518
519 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
520
521 if (!wiphy)
522 return NULL;
523
Johannes Berg2e161f72010-08-12 15:38:38 +0200524 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
525
Johannes Berg207aba62010-12-10 17:10:44 +0100526 wiphy->privid = mac80211_wiphy_privid;
527
Johannes Berg9bc383d2009-11-19 11:55:19 +0100528 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
529 WIPHY_FLAG_4ADDR_AP |
Johannes Bergf7e01042010-12-09 19:49:02 +0100530 WIPHY_FLAG_4ADDR_STATION |
531 WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS;
Johannes Berg207aba62010-12-10 17:10:44 +0100532
533 if (!ops->set_key)
534 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200535
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100536 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700537
538 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200539
Jiri Bencf0706e82007-05-05 11:45:53 -0700540 local->hw.wiphy = wiphy;
541
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000542 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700543
Johannes Berg4480f15c2007-07-10 19:32:10 +0200544 BUG_ON(!ops->tx);
Johannes Berg4150c572007-09-17 01:29:23 -0400545 BUG_ON(!ops->start);
546 BUG_ON(!ops->stop);
Johannes Berg4480f15c2007-07-10 19:32:10 +0200547 BUG_ON(!ops->config);
548 BUG_ON(!ops->add_interface);
Johannes Berg4150c572007-09-17 01:29:23 -0400549 BUG_ON(!ops->remove_interface);
550 BUG_ON(!ops->configure_filter);
Jiri Bencf0706e82007-05-05 11:45:53 -0700551 local->ops = ops;
552
Johannes Berge6a98542008-10-21 12:40:02 +0200553 /* set up some defaults */
554 local->hw.queues = 1;
555 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200556 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200557 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200558 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
559 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergc428c892009-04-29 00:28:18 +0200560 local->user_power_level = -1;
Kalle Valo50ae0cf2010-01-12 10:42:39 +0200561 local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
562 local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
Jiri Bencf0706e82007-05-05 11:45:53 -0700563
Johannes Berg79010422007-09-18 17:29:21 -0400564 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000565
566 __hw_addr_init(&local->mc_list);
567
Johannes Bergc771c9d2009-01-23 22:54:03 +0100568 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200569 mutex_init(&local->mtx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700570
Johannes Bergad0e2b52010-06-01 10:19:19 +0200571 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200572 spin_lock_init(&local->filter_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200573 spin_lock_init(&local->queue_stop_reason_lock);
574
Johannes Berg681c4d02011-01-12 13:40:33 +0100575 /*
576 * The rx_skb_queue is only accessed from tasklets,
577 * but other SKB queues are used from within IRQ
578 * context. Therefore, this one needs a different
579 * locking class so our direct, non-irq-safe use of
580 * the queue's lock doesn't throw lockdep warnings.
581 */
582 skb_queue_head_init_class(&local->rx_skb_queue,
583 &ieee80211_rx_skb_queue_class);
Christian Lamparter24a8fda2010-12-30 17:25:29 +0100584
Johannes Bergc2b13452008-09-11 00:01:55 +0200585 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700586
Johannes Bergaf6b6372009-12-23 13:15:35 +0100587 ieee80211_work_init(local);
588
Johannes Bergf2753dd2009-04-14 10:09:24 +0200589 INIT_WORK(&local->restart_work, ieee80211_restart_work);
590
Johannes Berg3ac64be2009-08-17 16:16:53 +0200591 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100592 INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
593 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200594
Kalle Valo520eb822008-12-18 23:35:27 +0200595 INIT_WORK(&local->dynamic_ps_enable_work,
596 ieee80211_dynamic_ps_enable_work);
597 INIT_WORK(&local->dynamic_ps_disable_work,
598 ieee80211_dynamic_ps_disable_work);
599 setup_timer(&local->dynamic_ps_timer,
600 ieee80211_dynamic_ps_timer, (unsigned long) local);
601
Jiri Bencf0706e82007-05-05 11:45:53 -0700602 sta_info_init(local);
603
Johannes Berga6a67db2010-06-10 10:21:41 +0200604 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100605 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200606 atomic_set(&local->agg_queue_stop[i], 0);
607 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700608 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
609 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700610
611 tasklet_init(&local->tasklet,
612 ieee80211_tasklet_handler,
613 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700614
615 skb_queue_head_init(&local->skb_queue);
616 skb_queue_head_init(&local->skb_queue_unreliable);
617
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400618 /* init dummy netdev for use w/ NAPI */
619 init_dummy_netdev(&local->napi_dev);
620
Johannes Bergfe67c912010-11-27 20:02:59 +0100621 ieee80211_led_names(local);
622
Johannes Berg21f83582010-12-18 17:20:47 +0100623 ieee80211_hw_roc_setup(local);
624
Jiri Bencf0706e82007-05-05 11:45:53 -0700625 return local_to_hw(local);
626}
627EXPORT_SYMBOL(ieee80211_alloc_hw);
628
629int ieee80211_register_hw(struct ieee80211_hw *hw)
630{
631 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -0700632 int result;
Johannes Berg8318d782008-01-24 19:38:38 +0100633 enum ieee80211_band band;
Johannes Bergbe4a4b62010-05-03 08:49:48 +0200634 int channels, max_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200635 bool supp_ht;
Johannes Berg25e47c182009-04-02 20:14:06 +0200636 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200637 /* keep WEP first, it may be removed below */
Johannes Berg25e47c182009-04-02 20:14:06 +0200638 WLAN_CIPHER_SUITE_WEP40,
639 WLAN_CIPHER_SUITE_WEP104,
640 WLAN_CIPHER_SUITE_TKIP,
641 WLAN_CIPHER_SUITE_CCMP,
642
643 /* keep last -- depends on hw flags! */
644 WLAN_CIPHER_SUITE_AES_CMAC
645 };
Johannes Berg8318d782008-01-24 19:38:38 +0100646
Helmut Schaa78be49e2010-10-02 11:31:55 +0200647 if (hw->max_report_rates == 0)
648 hw->max_report_rates = hw->max_rates;
649
Johannes Berg8318d782008-01-24 19:38:38 +0100650 /*
651 * generic code guarantees at least one band,
652 * set this very early because much code assumes
653 * that hw.conf.channel is assigned
654 */
Johannes Berg2a519312009-02-10 21:25:55 +0100655 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200656 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200657 supp_ht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100658 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
659 struct ieee80211_supported_band *sband;
660
661 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200662 if (!sband)
663 continue;
664 if (!local->oper_channel) {
Johannes Berg8318d782008-01-24 19:38:38 +0100665 /* init channel we're on */
666 local->hw.conf.channel =
Johannes Berg58905ca2009-05-07 14:23:01 +0200667 local->oper_channel = &sband->channels[0];
668 local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
Johannes Berg8318d782008-01-24 19:38:38 +0100669 }
Johannes Bergde95a542009-04-01 11:58:36 +0200670 channels += sband->n_channels;
671
672 if (max_bitrates < sband->n_bitrates)
673 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200674 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Johannes Berg8318d782008-01-24 19:38:38 +0100675 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700676
Johannes Berg5ba63532009-08-07 17:54:07 +0200677 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
678 sizeof(void *) * channels, GFP_KERNEL);
679 if (!local->int_scan_req)
Johannes Berg2a519312009-02-10 21:25:55 +0100680 return -ENOMEM;
681
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700682 /* if low-level driver supports AP, we also support VLAN */
683 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP))
684 local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
685
686 /* mac80211 always supports monitor */
687 local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
688
Johannes Berg5eb5a522010-08-25 14:34:01 +0200689#ifndef CONFIG_MAC80211_MESH
690 /* mesh depends on Kconfig, but drivers should set it if they want */
691 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
692#endif
693
Johannes Berga621fa42010-08-27 14:26:54 +0300694 /* mac80211 supports control port protocol changing */
695 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
696
Johannes Berg77965c92009-02-18 18:45:06 +0100697 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
698 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
699 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
700 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
701
Kalle Valoab133152010-01-12 10:42:31 +0200702 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
703 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
704 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
705
Johannes Bergde95a542009-04-01 11:58:36 +0200706 /*
707 * Calculate scan IE length -- we need this to alloc
708 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300709 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200710 * information -- SSID is the driver's responsibility.
711 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300712 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
713 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200714 if (supp_ht)
715 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200716
717 if (!local->ops->hw_scan) {
718 /* For hw_scan, driver needs to set these up. */
719 local->hw.wiphy->max_scan_ssids = 4;
720 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
721 }
722
723 /*
724 * If the driver supports any scan IEs, then assume the
725 * limit includes the IEs mac80211 will add, otherwise
726 * leave it at zero and let the driver sort it out; we
727 * still pass our IEs to the driver but userspace will
728 * not be allowed to in that case.
729 */
730 if (local->hw.wiphy->max_scan_ie_len)
731 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
732
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300733 /* Set up cipher suites unless driver already did */
734 if (!local->hw.wiphy->cipher_suites) {
735 local->hw.wiphy->cipher_suites = cipher_suites;
736 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
737 if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
738 local->hw.wiphy->n_cipher_suites--;
739 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200740 if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300741 if (local->hw.wiphy->cipher_suites == cipher_suites) {
742 local->hw.wiphy->cipher_suites += 2;
743 local->hw.wiphy->n_cipher_suites -= 2;
744 } else {
745 u32 *suites;
746 int r, w = 0;
747
748 /* Filter out WEP */
749
750 suites = kmemdup(
751 local->hw.wiphy->cipher_suites,
752 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
753 GFP_KERNEL);
754 if (!suites)
755 return -ENOMEM;
756 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
757 u32 suite = local->hw.wiphy->cipher_suites[r];
758 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
759 suite == WLAN_CIPHER_SUITE_WEP104)
760 continue;
761 suites[w++] = suite;
762 }
763 local->hw.wiphy->cipher_suites = suites;
764 local->hw.wiphy->n_cipher_suites = w;
765 local->wiphy_ciphers_allocated = true;
766 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200767 }
Johannes Berg25e47c182009-04-02 20:14:06 +0200768
Johannes Berg21f83582010-12-18 17:20:47 +0100769 if (!local->ops->remain_on_channel)
770 local->hw.wiphy->max_remain_on_channel_duration = 5000;
Johannes Berga2939112010-12-14 17:54:28 +0100771
Jiri Bencf0706e82007-05-05 11:45:53 -0700772 result = wiphy_register(local->hw.wiphy);
773 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +0100774 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -0700775
Johannes Berge2530082008-05-17 00:57:14 +0200776 /*
777 * We use the number of queues for feature tests (QoS, HT) internally
778 * so restrict them appropriately.
779 */
Johannes Berge2530082008-05-17 00:57:14 +0200780 if (hw->queues > IEEE80211_MAX_QUEUES)
781 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +0200782
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400783 local->workqueue =
Tejun Heo99b88a02010-10-15 17:35:28 +0200784 alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400785 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -0700786 result = -ENOMEM;
787 goto fail_workqueue;
788 }
789
Johannes Bergb306f452007-07-10 19:32:08 +0200790 /*
791 * The hardware needs headroom for sending the frame,
792 * and we need some headroom for passing the frame to monitor
793 * interfaces, but never both at the same time.
794 */
Gertjan van Wingerded24deb22009-12-04 23:46:54 +0100795 BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM !=
796 sizeof(struct ieee80211_tx_status_rtap_hdr));
Jiri Benc33ccad32007-07-18 17:10:44 +0200797 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
798 sizeof(struct ieee80211_tx_status_rtap_hdr));
Johannes Bergb306f452007-07-10 19:32:08 +0200799
Jiri Bence9f207f2007-05-05 11:46:38 -0700800 debugfs_hw_add(local);
801
Helmut Schaab4469182010-02-24 14:19:37 +0100802 /*
803 * if the driver doesn't specify a max listen interval we
804 * use 5 which should be a safe default
805 */
Tomas Winklerea95bba2008-07-18 13:53:00 +0800806 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +0100807 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +0800808
809 local->hw.conf.listen_interval = local->hw.max_listen_interval;
810
Juuso Oikarinenff616382010-06-09 09:51:52 +0300811 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +0300812
Jiri Bencf0706e82007-05-05 11:45:53 -0700813 result = sta_info_start(local);
814 if (result < 0)
815 goto fail_sta_info;
816
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100817 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -0400818 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700819 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
820 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100821
Jiri Bencf0706e82007-05-05 11:45:53 -0700822 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -0700823
Johannes Berg830f9032007-10-28 14:51:05 +0100824 result = ieee80211_init_rate_ctrl_alg(local,
825 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -0700826 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700827 wiphy_debug(local->hw.wiphy,
828 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -0700829 goto fail_rate;
830 }
831
Johannes Berg8dffff22008-12-09 00:10:30 +0100832 /* add one default STA interface if supported */
833 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
834 result = ieee80211_if_add(local, "wlan%d", NULL,
835 NL80211_IFTYPE_STATION, NULL);
836 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700837 wiphy_warn(local->hw.wiphy,
838 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +0100839 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700840
Jiri Bencf0706e82007-05-05 11:45:53 -0700841 rtnl_unlock();
842
843 ieee80211_led_init(local);
844
Johannes Berg10f644a2009-04-16 13:17:25 +0200845 local->network_latency_notifier.notifier_call =
846 ieee80211_max_network_latency;
847 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
848 &local->network_latency_notifier);
Johannes Berg10f644a2009-04-16 13:17:25 +0200849 if (result) {
850 rtnl_lock();
851 goto fail_pm_qos;
852 }
853
John W. Linville26b36cf2010-06-04 14:25:44 -0400854#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300855 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
856 result = register_inetaddr_notifier(&local->ifa_notifier);
857 if (result)
858 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -0400859#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300860
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400861 netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll,
862 local->hw.napi_weight);
863
Jiri Bencf0706e82007-05-05 11:45:53 -0700864 return 0;
865
Juuso Oikarinen93c08c32010-08-03 08:22:25 +0300866#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300867 fail_ifa:
868 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
869 &local->network_latency_notifier);
870 rtnl_lock();
Juuso Oikarinen93c08c32010-08-03 08:22:25 +0300871#endif
Johannes Berg10f644a2009-04-16 13:17:25 +0200872 fail_pm_qos:
873 ieee80211_led_exit(local);
874 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +0200875 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -0700876 rtnl_unlock();
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100877 ieee80211_wep_free(local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700878 sta_info_stop(local);
Johannes Berg10f644a2009-04-16 13:17:25 +0200879 fail_sta_info:
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400880 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +0200881 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -0700882 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +0200883 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300884 if (local->wiphy_ciphers_allocated)
885 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +0200886 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -0700887 return result;
888}
889EXPORT_SYMBOL(ieee80211_register_hw);
890
Jiri Bencf0706e82007-05-05 11:45:53 -0700891void ieee80211_unregister_hw(struct ieee80211_hw *hw)
892{
893 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -0700894
895 tasklet_kill(&local->tx_pending_tasklet);
896 tasklet_kill(&local->tasklet);
897
Johannes Berg10f644a2009-04-16 13:17:25 +0200898 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
899 &local->network_latency_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -0400900#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300901 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -0400902#endif
Johannes Berg10f644a2009-04-16 13:17:25 +0200903
Jiri Bencf0706e82007-05-05 11:45:53 -0700904 rtnl_lock();
905
Johannes Berg79010422007-09-18 17:29:21 -0400906 /*
907 * At this point, interface list manipulations are fine
908 * because the driver cannot be handing us frames any
909 * more and the tasklet is killed.
910 */
Johannes Berg75636522008-07-09 14:40:35 +0200911 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +0200912
Jiri Bencf0706e82007-05-05 11:45:53 -0700913 rtnl_unlock();
914
Johannes Berg071249b2010-08-25 14:47:38 +0200915 /*
916 * Now all work items will be gone, but the
917 * timer might still be armed, so delete it
918 */
919 del_timer_sync(&local->work_timer);
920
Christian Lamparter258086a2010-08-22 23:48:25 +0200921 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +0200922 cancel_work_sync(&local->reconfig_filter);
923
Jiri Bencf0706e82007-05-05 11:45:53 -0700924 ieee80211_clear_tx_pending(local);
925 sta_info_stop(local);
926 rate_control_deinitialize(local);
927
Joe Perchesf64f9e72009-11-29 16:55:45 -0800928 if (skb_queue_len(&local->skb_queue) ||
929 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700930 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -0700931 skb_queue_purge(&local->skb_queue);
932 skb_queue_purge(&local->skb_queue_unreliable);
Christian Lamparter24a8fda2010-12-30 17:25:29 +0100933 skb_queue_purge(&local->rx_skb_queue);
Jiri Bencf0706e82007-05-05 11:45:53 -0700934
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400935 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -0700936 wiphy_unregister(local->hw.wiphy);
937 ieee80211_wep_free(local);
938 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +0200939 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -0700940}
941EXPORT_SYMBOL(ieee80211_unregister_hw);
942
943void ieee80211_free_hw(struct ieee80211_hw *hw)
944{
945 struct ieee80211_local *local = hw_to_local(hw);
946
Johannes Bergc771c9d2009-01-23 22:54:03 +0100947 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200948 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +0100949
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300950 if (local->wiphy_ciphers_allocated)
951 kfree(local->hw.wiphy->cipher_suites);
952
Jiri Bencf0706e82007-05-05 11:45:53 -0700953 wiphy_free(local->hw.wiphy);
954}
955EXPORT_SYMBOL(ieee80211_free_hw);
956
Jiri Bencf0706e82007-05-05 11:45:53 -0700957static int __init ieee80211_init(void)
958{
959 struct sk_buff *skb;
960 int ret;
961
Johannes Berge039fa42008-05-15 12:55:29 +0200962 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
963 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +0200964 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -0700965
Felix Fietkaucccf1292008-10-05 18:07:45 +0200966 ret = rc80211_minstrel_init();
967 if (ret)
968 return ret;
969
Felix Fietkauec8aa662010-05-13 16:48:03 +0200970 ret = rc80211_minstrel_ht_init();
971 if (ret)
972 goto err_minstrel;
973
Johannes Berg4b475892008-01-02 15:17:03 +0100974 ret = rc80211_pid_init();
Mattias Nisslerad018372007-12-19 01:25:57 +0100975 if (ret)
Johannes Berg47846c92009-11-25 17:46:19 +0100976 goto err_pid;
Jiri Bencf0706e82007-05-05 11:45:53 -0700977
Johannes Berg47846c92009-11-25 17:46:19 +0100978 ret = ieee80211_iface_init();
979 if (ret)
980 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -0700981
Jiri Bencf0706e82007-05-05 11:45:53 -0700982 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +0100983 err_netdev:
984 rc80211_pid_exit();
985 err_pid:
Felix Fietkauec8aa662010-05-13 16:48:03 +0200986 rc80211_minstrel_ht_exit();
987 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +0100988 rc80211_minstrel_exit();
989
990 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -0700991}
992
Jiri Bencf0706e82007-05-05 11:45:53 -0700993static void __exit ieee80211_exit(void)
994{
Johannes Berg4b475892008-01-02 15:17:03 +0100995 rc80211_pid_exit();
Felix Fietkauec8aa662010-05-13 16:48:03 +0200996 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +0200997 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +0100998
Luis Carlos Cobof7a92142008-02-23 15:17:18 +0100999 if (mesh_allocated)
1000 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001001
Johannes Berg47846c92009-11-25 17:46:19 +01001002 ieee80211_iface_exit();
Jiri Bencf0706e82007-05-05 11:45:53 -07001003}
1004
1005
Johannes Bergca9938fe2007-09-11 12:50:32 +02001006subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -07001007module_exit(ieee80211_exit);
1008
1009MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1010MODULE_LICENSE("GPL");