blob: d87eb005690f9bcdb3a0e5913e29156869e108a5 [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 Berg0d143fe2008-09-11 00:01:59 +020042void ieee80211_configure_filter(struct ieee80211_local *local)
Johannes Berg4150c572007-09-17 01:29:23 -040043{
Johannes Berg3ac64be2009-08-17 16:16:53 +020044 u64 mc;
Johannes Berg4150c572007-09-17 01:29:23 -040045 unsigned int changed_flags;
46 unsigned int new_flags = 0;
47
Johannes Berg53918992007-09-26 15:19:47 +020048 if (atomic_read(&local->iff_promiscs))
Johannes Berg4150c572007-09-17 01:29:23 -040049 new_flags |= FIF_PROMISC_IN_BSS;
50
Johannes Berg53918992007-09-26 15:19:47 +020051 if (atomic_read(&local->iff_allmultis))
Johannes Berg4150c572007-09-17 01:29:23 -040052 new_flags |= FIF_ALLMULTI;
53
Johannes Berg3ac64be2009-08-17 16:16:53 +020054 if (local->monitors || local->scanning)
Michael Wu8cc9a732008-01-31 19:48:23 +010055 new_flags |= FIF_BCN_PRBRESP_PROMISC;
56
Johannes Berg7be50862010-10-13 12:06:24 +020057 if (local->fif_probe_req || local->probe_req_reg)
58 new_flags |= FIF_PROBE_REQ;
59
Michael Wu8cc9a732008-01-31 19:48:23 +010060 if (local->fif_fcsfail)
61 new_flags |= FIF_FCSFAIL;
62
63 if (local->fif_plcpfail)
64 new_flags |= FIF_PLCPFAIL;
65
66 if (local->fif_control)
67 new_flags |= FIF_CONTROL;
68
69 if (local->fif_other_bss)
70 new_flags |= FIF_OTHER_BSS;
Johannes Berg4150c572007-09-17 01:29:23 -040071
Igor Perminove3b90ca2009-08-04 16:48:51 +040072 if (local->fif_pspoll)
73 new_flags |= FIF_PSPOLL;
74
Johannes Berg3ac64be2009-08-17 16:16:53 +020075 spin_lock_bh(&local->filter_lock);
Johannes Berg4150c572007-09-17 01:29:23 -040076 changed_flags = local->filter_flags ^ new_flags;
77
Jiri Pirko22bedad32010-04-01 21:22:57 +000078 mc = drv_prepare_multicast(local, &local->mc_list);
Johannes Berg3ac64be2009-08-17 16:16:53 +020079 spin_unlock_bh(&local->filter_lock);
80
Johannes Berg4150c572007-09-17 01:29:23 -040081 /* be a bit nasty */
82 new_flags |= (1<<31);
83
Johannes Berg3ac64be2009-08-17 16:16:53 +020084 drv_configure_filter(local, changed_flags, &new_flags, mc);
Johannes Berg4150c572007-09-17 01:29:23 -040085
86 WARN_ON(new_flags & (1<<31));
87
88 local->filter_flags = new_flags & ~(1<<31);
89}
90
Johannes Berg3ac64be2009-08-17 16:16:53 +020091static void ieee80211_reconfig_filter(struct work_struct *work)
92{
93 struct ieee80211_local *local =
94 container_of(work, struct ieee80211_local, reconfig_filter);
95
96 ieee80211_configure_filter(local);
97}
98
Johannes Berge8975582008-10-09 12:18:51 +020099int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
Johannes Bergb2c258f2007-07-27 15:43:23 +0200100{
Johannes Berg58905ca2009-05-07 14:23:01 +0200101 struct ieee80211_channel *chan, *scan_chan;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200102 int ret = 0;
Johannes Berge8975582008-10-09 12:18:51 +0200103 int power;
Sujith094d05d2008-12-12 11:57:43 +0530104 enum nl80211_channel_type channel_type;
Felix Fietkauffd27782010-07-29 17:36:43 +0200105 u32 offchannel_flag;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200106
Johannes Bergcb121ba2008-10-14 16:38:55 +0200107 might_sleep();
108
Johannes Berg58905ca2009-05-07 14:23:01 +0200109 scan_chan = local->scan_channel;
110
Felix Fietkauffd27782010-07-29 17:36:43 +0200111 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berg58905ca2009-05-07 14:23:01 +0200112 if (scan_chan) {
113 chan = scan_chan;
Sujith094d05d2008-12-12 11:57:43 +0530114 channel_type = NL80211_CHAN_NO_HT;
Felix Fietkau45521242010-07-28 02:40:49 +0200115 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
Luis R. Rodriguez8d4780e2010-09-24 21:59:57 -0400116 } else if (local->tmp_channel &&
117 local->oper_channel != local->tmp_channel) {
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100118 chan = scan_chan = local->tmp_channel;
119 channel_type = local->tmp_channel_type;
Felix Fietkau45521242010-07-28 02:40:49 +0200120 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200121 } else {
Johannes Bergb2c258f2007-07-27 15:43:23 +0200122 chan = local->oper_channel;
Johannes Berg0aaffa92010-05-05 15:28:27 +0200123 channel_type = local->_oper_channel_type;
Felix Fietkau45521242010-07-28 02:40:49 +0200124 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200125 }
Felix Fietkauffd27782010-07-29 17:36:43 +0200126 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200127
Felix Fietkauffd27782010-07-29 17:36:43 +0200128 if (offchannel_flag || chan != local->hw.conf.channel ||
Johannes Berg47979382009-01-07 10:13:27 +0100129 channel_type != local->hw.conf.channel_type) {
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200130 local->hw.conf.channel = chan;
Johannes Berg47979382009-01-07 10:13:27 +0100131 local->hw.conf.channel_type = channel_type;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200132 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
133 }
Johannes Berg8318d782008-01-24 19:38:38 +0100134
Johannes Berg0f782312009-12-01 13:37:02 +0100135 if (!conf_is_ht(&local->hw.conf)) {
136 /*
137 * mac80211.h documents that this is only valid
138 * when the channel is set to an HT type, and
139 * that otherwise STATIC is used.
140 */
141 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
142 } else if (local->hw.conf.smps_mode != local->smps_mode) {
143 local->hw.conf.smps_mode = local->smps_mode;
144 changed |= IEEE80211_CONF_CHANGE_SMPS;
145 }
146
Johannes Berg58905ca2009-05-07 14:23:01 +0200147 if (scan_chan)
Johannes Berge8975582008-10-09 12:18:51 +0200148 power = chan->max_power;
Johannes Berg8318d782008-01-24 19:38:38 +0100149 else
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530150 power = local->power_constr_level ?
151 (chan->max_power - local->power_constr_level) :
152 chan->max_power;
153
Johannes Berg47afbaf2009-04-07 15:22:28 +0200154 if (local->user_power_level >= 0)
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530155 power = min(power, local->user_power_level);
156
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 Berge8975582008-10-09 12:18:51 +0200162 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200163 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200164 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800165 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200166 * HW reconfiguration should never fail, the driver has told
167 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800168 *
169 * Current status:
170 * rfkill is not integrated with mac80211 and a
171 * configuration command can thus fail if hardware rfkill
172 * is enabled
173 *
174 * FIXME: integrate rfkill with mac80211 and then add this
175 * WARN_ON() back
176 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200177 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800178 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200179 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200180
181 return ret;
182}
183
Johannes Berg471b3ef2007-12-28 14:32:58 +0100184void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
185 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200186{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100187 struct ieee80211_local *local = sdata->local;
Johannes Berg9cef8732009-05-14 13:10:14 +0200188 static const u8 zero[ETH_ALEN] = { 0 };
Johannes Berg471b3ef2007-12-28 14:32:58 +0100189
190 if (!changed)
191 return;
192
Johannes Berg9cef8732009-05-14 13:10:14 +0200193 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
194 /*
195 * While not associated, claim a BSSID of all-zeroes
196 * so that drivers don't do any weird things with the
197 * BSSID at that time.
198 */
199 if (sdata->vif.bss_conf.assoc)
200 sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
201 else
202 sdata->vif.bss_conf.bssid = zero;
203 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200204 sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
205 else if (sdata->vif.type == NL80211_IFTYPE_AP)
Johannes Berg47846c92009-11-25 17:46:19 +0100206 sdata->vif.bss_conf.bssid = sdata->vif.addr;
Bill Jordan1be7fe82010-10-01 11:20:41 -0400207 else if (sdata->vif.type == NL80211_IFTYPE_WDS)
208 sdata->vif.bss_conf.bssid = NULL;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200209 else if (ieee80211_vif_is_mesh(&sdata->vif)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200210 sdata->vif.bss_conf.bssid = zero;
211 } else {
212 WARN_ON(1);
213 return;
214 }
215
216 switch (sdata->vif.type) {
217 case NL80211_IFTYPE_AP:
218 case NL80211_IFTYPE_ADHOC:
Bill Jordan1be7fe82010-10-01 11:20:41 -0400219 case NL80211_IFTYPE_WDS:
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200220 case NL80211_IFTYPE_MESH_POINT:
221 break;
222 default:
223 /* do not warn to simplify caller in scan.c */
224 changed &= ~BSS_CHANGED_BEACON_ENABLED;
225 if (WARN_ON(changed & BSS_CHANGED_BEACON))
226 return;
227 break;
228 }
229
230 if (changed & BSS_CHANGED_BEACON_ENABLED) {
Johannes Berg9607e6b2009-12-23 13:15:31 +0100231 if (local->quiescing || !ieee80211_sdata_running(sdata) ||
Bob Copeland97af7432009-07-29 10:13:03 +0200232 test_bit(SCAN_SW_SCANNING, &local->scanning)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200233 sdata->vif.bss_conf.enable_beacon = false;
234 } else {
235 /*
236 * Beacon should be enabled, but AP mode must
237 * check whether there is a beacon configured.
238 */
239 switch (sdata->vif.type) {
240 case NL80211_IFTYPE_AP:
241 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200242 !!sdata->u.ap.beacon;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200243 break;
244 case NL80211_IFTYPE_ADHOC:
245 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200246 !!sdata->u.ibss.presp;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200247 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800248#ifdef CONFIG_MAC80211_MESH
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200249 case NL80211_IFTYPE_MESH_POINT:
Johannes Berg29cbe682010-12-03 09:20:44 +0100250 sdata->vif.bss_conf.enable_beacon =
251 !!sdata->u.mesh.mesh_id_len;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200252 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800253#endif
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200254 default:
255 /* not reached */
256 WARN_ON(1);
257 break;
258 }
259 }
260 }
261
Johannes Berg12375ef2009-11-25 20:30:31 +0100262 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200263}
264
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200265u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200266{
Johannes Bergbda39332008-10-11 01:51:51 +0200267 sdata->vif.bss_conf.use_cts_prot = false;
268 sdata->vif.bss_conf.use_short_preamble = false;
269 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200270 return BSS_CHANGED_ERP_CTS_PROT |
271 BSS_CHANGED_ERP_PREAMBLE |
272 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200273}
274
Jiri Bencf0706e82007-05-05 11:45:53 -0700275static void ieee80211_tasklet_handler(unsigned long data)
276{
277 struct ieee80211_local *local = (struct ieee80211_local *) data;
278 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700279
280 while ((skb = skb_dequeue(&local->skb_queue)) ||
281 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
282 switch (skb->pkt_type) {
283 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100284 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700285 * netstack. */
286 skb->pkt_type = 0;
Johannes Bergf1d58c22009-06-17 13:13:00 +0200287 ieee80211_rx(local_to_hw(local), skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700288 break;
289 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700290 skb->pkt_type = 0;
Johannes Berge039fa42008-05-15 12:55:29 +0200291 ieee80211_tx_status(local_to_hw(local), skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700292 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200293 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600294 WARN(1, "mac80211: Packet is of unknown type %d\n",
295 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700296 dev_kfree_skb(skb);
297 break;
298 }
299 }
300}
301
Johannes Bergf2753dd2009-04-14 10:09:24 +0200302static void ieee80211_restart_work(struct work_struct *work)
303{
304 struct ieee80211_local *local =
305 container_of(work, struct ieee80211_local, restart_work);
306
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200307 /* wait for scan work complete */
308 flush_workqueue(local->workqueue);
309
310 mutex_lock(&local->mtx);
311 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
312 "%s called with hardware scan in progress\n", __func__);
313 mutex_unlock(&local->mtx);
314
Johannes Bergf2753dd2009-04-14 10:09:24 +0200315 rtnl_lock();
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200316 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200317 ieee80211_reconfig(local);
318 rtnl_unlock();
319}
320
321void ieee80211_restart_hw(struct ieee80211_hw *hw)
322{
323 struct ieee80211_local *local = hw_to_local(hw);
324
Johannes Bergb5878a22010-04-07 16:48:40 +0200325 trace_api_restart_hw(local);
326
John W. Linville18145c62010-08-30 15:12:02 -0400327 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Bergf2753dd2009-04-14 10:09:24 +0200328 ieee80211_stop_queues_by_reason(hw,
329 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
330
331 schedule_work(&local->restart_work);
332}
333EXPORT_SYMBOL(ieee80211_restart_hw);
334
Johannes Berg0f782312009-12-01 13:37:02 +0100335static void ieee80211_recalc_smps_work(struct work_struct *work)
336{
337 struct ieee80211_local *local =
338 container_of(work, struct ieee80211_local, recalc_smps);
339
340 mutex_lock(&local->iflist_mtx);
Johannes Berg025e6be2010-10-05 10:41:47 +0200341 ieee80211_recalc_smps(local);
Johannes Berg0f782312009-12-01 13:37:02 +0100342 mutex_unlock(&local->iflist_mtx);
343}
344
John W. Linville26b36cf2010-06-04 14:25:44 -0400345#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300346static int ieee80211_ifa_changed(struct notifier_block *nb,
347 unsigned long data, void *arg)
348{
349 struct in_ifaddr *ifa = arg;
350 struct ieee80211_local *local =
351 container_of(nb, struct ieee80211_local,
352 ifa_notifier);
353 struct net_device *ndev = ifa->ifa_dev->dev;
354 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300355 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300356 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300357 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300358 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300359 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300360
361 /* Make sure it's our interface that got changed */
362 if (!wdev)
363 return NOTIFY_DONE;
364
365 if (wdev->wiphy != local->hw.wiphy)
366 return NOTIFY_DONE;
367
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300368 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300369 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300370
Johannes Berg26a58452010-08-27 12:35:55 +0200371 if (!ieee80211_sdata_running(sdata))
372 return NOTIFY_DONE;
373
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300374 /* ARP filtering is only supported in managed mode */
375 if (sdata->vif.type != NL80211_IFTYPE_STATION)
376 return NOTIFY_DONE;
377
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000378 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300379 if (!idev)
380 return NOTIFY_DONE;
381
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300382 ifmgd = &sdata->u.mgd;
383 mutex_lock(&ifmgd->mtx);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300384
385 /* Copy the addresses to the bss_conf list */
386 ifa = idev->ifa_list;
387 while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
388 bss_conf->arp_addr_list[c] = ifa->ifa_address;
389 ifa = ifa->ifa_next;
390 c++;
391 }
392
393 /* If not all addresses fit the list, disable filtering */
394 if (ifa) {
395 sdata->arp_filter_state = false;
396 c = 0;
397 } else {
398 sdata->arp_filter_state = true;
399 }
400 bss_conf->arp_addr_cnt = c;
401
402 /* Configure driver only if associated */
403 if (ifmgd->associated) {
404 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
405 ieee80211_bss_info_change_notify(sdata,
406 BSS_CHANGED_ARP_FILTER);
407 }
408
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300409 mutex_unlock(&ifmgd->mtx);
410
411 return NOTIFY_DONE;
412}
John W. Linville26b36cf2010-06-04 14:25:44 -0400413#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300414
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400415static int ieee80211_napi_poll(struct napi_struct *napi, int budget)
416{
417 struct ieee80211_local *local =
418 container_of(napi, struct ieee80211_local, napi);
419
420 return local->ops->napi_poll(&local->hw, budget);
421}
422
423void ieee80211_napi_schedule(struct ieee80211_hw *hw)
424{
425 struct ieee80211_local *local = hw_to_local(hw);
426
427 napi_schedule(&local->napi);
428}
429EXPORT_SYMBOL(ieee80211_napi_schedule);
430
431void ieee80211_napi_complete(struct ieee80211_hw *hw)
432{
433 struct ieee80211_local *local = hw_to_local(hw);
434
435 napi_complete(&local->napi);
436}
437EXPORT_SYMBOL(ieee80211_napi_complete);
438
Johannes Berg2e161f72010-08-12 15:38:38 +0200439/* There isn't a lot of sense in it, but you can transmit anything you like */
440static const struct ieee80211_txrx_stypes
441ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
442 [NL80211_IFTYPE_ADHOC] = {
443 .tx = 0xffff,
444 .rx = BIT(IEEE80211_STYPE_ACTION >> 4),
445 },
446 [NL80211_IFTYPE_STATION] = {
447 .tx = 0xffff,
448 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
449 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
450 },
451 [NL80211_IFTYPE_AP] = {
452 .tx = 0xffff,
453 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
454 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
455 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
456 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
457 BIT(IEEE80211_STYPE_AUTH >> 4) |
458 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
459 BIT(IEEE80211_STYPE_ACTION >> 4),
460 },
461 [NL80211_IFTYPE_AP_VLAN] = {
462 /* copy AP */
463 .tx = 0xffff,
464 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
465 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
466 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
467 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
468 BIT(IEEE80211_STYPE_AUTH >> 4) |
469 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
470 BIT(IEEE80211_STYPE_ACTION >> 4),
471 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200472 [NL80211_IFTYPE_P2P_CLIENT] = {
473 .tx = 0xffff,
474 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
475 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
476 },
477 [NL80211_IFTYPE_P2P_GO] = {
478 .tx = 0xffff,
479 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
480 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
481 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
482 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
483 BIT(IEEE80211_STYPE_AUTH >> 4) |
484 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
485 BIT(IEEE80211_STYPE_ACTION >> 4),
486 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200487};
488
Jiri Bencf0706e82007-05-05 11:45:53 -0700489struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
490 const struct ieee80211_ops *ops)
491{
Jiri Bencf0706e82007-05-05 11:45:53 -0700492 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100493 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700494 struct wiphy *wiphy;
495
496 /* Ensure 32-byte alignment of our private data and hw private data.
497 * We use the wiphy priv data for both our ieee80211_local and for
498 * the driver's private data
499 *
500 * In memory it'll be like this:
501 *
502 * +-------------------------+
503 * | struct wiphy |
504 * +-------------------------+
505 * | struct ieee80211_local |
506 * +-------------------------+
507 * | driver's private data |
508 * +-------------------------+
509 *
510 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000511 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700512
513 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
514
515 if (!wiphy)
516 return NULL;
517
Johannes Berg2e161f72010-08-12 15:38:38 +0200518 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
519
Johannes Berg207aba62010-12-10 17:10:44 +0100520 wiphy->privid = mac80211_wiphy_privid;
521
Johannes Berg9bc383d2009-11-19 11:55:19 +0100522 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
523 WIPHY_FLAG_4ADDR_AP |
Johannes Bergf7e01042010-12-09 19:49:02 +0100524 WIPHY_FLAG_4ADDR_STATION |
525 WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS;
Johannes Berg207aba62010-12-10 17:10:44 +0100526
527 if (!ops->set_key)
528 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200529
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100530 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700531
532 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200533
Jiri Bencf0706e82007-05-05 11:45:53 -0700534 local->hw.wiphy = wiphy;
535
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000536 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700537
Johannes Berg4480f15c2007-07-10 19:32:10 +0200538 BUG_ON(!ops->tx);
Johannes Berg4150c572007-09-17 01:29:23 -0400539 BUG_ON(!ops->start);
540 BUG_ON(!ops->stop);
Johannes Berg4480f15c2007-07-10 19:32:10 +0200541 BUG_ON(!ops->config);
542 BUG_ON(!ops->add_interface);
Johannes Berg4150c572007-09-17 01:29:23 -0400543 BUG_ON(!ops->remove_interface);
544 BUG_ON(!ops->configure_filter);
Jiri Bencf0706e82007-05-05 11:45:53 -0700545 local->ops = ops;
546
Johannes Berge6a98542008-10-21 12:40:02 +0200547 /* set up some defaults */
548 local->hw.queues = 1;
549 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200550 local->hw.max_report_rates = 0;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200551 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
552 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergc428c892009-04-29 00:28:18 +0200553 local->user_power_level = -1;
Kalle Valo50ae0cf2010-01-12 10:42:39 +0200554 local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
555 local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
Jiri Bencf0706e82007-05-05 11:45:53 -0700556
Johannes Berg79010422007-09-18 17:29:21 -0400557 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000558
559 __hw_addr_init(&local->mc_list);
560
Johannes Bergc771c9d2009-01-23 22:54:03 +0100561 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200562 mutex_init(&local->mtx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700563
Johannes Bergad0e2b52010-06-01 10:19:19 +0200564 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200565 spin_lock_init(&local->filter_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200566 spin_lock_init(&local->queue_stop_reason_lock);
567
Johannes Bergc2b13452008-09-11 00:01:55 +0200568 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700569
Johannes Bergaf6b6372009-12-23 13:15:35 +0100570 ieee80211_work_init(local);
571
Johannes Bergf2753dd2009-04-14 10:09:24 +0200572 INIT_WORK(&local->restart_work, ieee80211_restart_work);
573
Johannes Berg3ac64be2009-08-17 16:16:53 +0200574 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100575 INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
576 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200577
Kalle Valo520eb822008-12-18 23:35:27 +0200578 INIT_WORK(&local->dynamic_ps_enable_work,
579 ieee80211_dynamic_ps_enable_work);
580 INIT_WORK(&local->dynamic_ps_disable_work,
581 ieee80211_dynamic_ps_disable_work);
582 setup_timer(&local->dynamic_ps_timer,
583 ieee80211_dynamic_ps_timer, (unsigned long) local);
584
Jiri Bencf0706e82007-05-05 11:45:53 -0700585 sta_info_init(local);
586
Johannes Berga6a67db2010-06-10 10:21:41 +0200587 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100588 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200589 atomic_set(&local->agg_queue_stop[i], 0);
590 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700591 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
592 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700593
594 tasklet_init(&local->tasklet,
595 ieee80211_tasklet_handler,
596 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700597
598 skb_queue_head_init(&local->skb_queue);
599 skb_queue_head_init(&local->skb_queue_unreliable);
600
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400601 /* init dummy netdev for use w/ NAPI */
602 init_dummy_netdev(&local->napi_dev);
603
Jiri Bencf0706e82007-05-05 11:45:53 -0700604 return local_to_hw(local);
605}
606EXPORT_SYMBOL(ieee80211_alloc_hw);
607
608int ieee80211_register_hw(struct ieee80211_hw *hw)
609{
610 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -0700611 int result;
Johannes Berg8318d782008-01-24 19:38:38 +0100612 enum ieee80211_band band;
Johannes Bergbe4a4b62010-05-03 08:49:48 +0200613 int channels, max_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200614 bool supp_ht;
Johannes Berg25e47c182009-04-02 20:14:06 +0200615 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200616 /* keep WEP first, it may be removed below */
Johannes Berg25e47c182009-04-02 20:14:06 +0200617 WLAN_CIPHER_SUITE_WEP40,
618 WLAN_CIPHER_SUITE_WEP104,
619 WLAN_CIPHER_SUITE_TKIP,
620 WLAN_CIPHER_SUITE_CCMP,
621
622 /* keep last -- depends on hw flags! */
623 WLAN_CIPHER_SUITE_AES_CMAC
624 };
Johannes Berg8318d782008-01-24 19:38:38 +0100625
Helmut Schaa78be49e2010-10-02 11:31:55 +0200626 if (hw->max_report_rates == 0)
627 hw->max_report_rates = hw->max_rates;
628
Johannes Berg8318d782008-01-24 19:38:38 +0100629 /*
630 * generic code guarantees at least one band,
631 * set this very early because much code assumes
632 * that hw.conf.channel is assigned
633 */
Johannes Berg2a519312009-02-10 21:25:55 +0100634 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200635 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200636 supp_ht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100637 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
638 struct ieee80211_supported_band *sband;
639
640 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200641 if (!sband)
642 continue;
643 if (!local->oper_channel) {
Johannes Berg8318d782008-01-24 19:38:38 +0100644 /* init channel we're on */
645 local->hw.conf.channel =
Johannes Berg58905ca2009-05-07 14:23:01 +0200646 local->oper_channel = &sband->channels[0];
647 local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
Johannes Berg8318d782008-01-24 19:38:38 +0100648 }
Johannes Bergde95a542009-04-01 11:58:36 +0200649 channels += sband->n_channels;
650
651 if (max_bitrates < sband->n_bitrates)
652 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200653 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Johannes Berg8318d782008-01-24 19:38:38 +0100654 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700655
Johannes Berg5ba63532009-08-07 17:54:07 +0200656 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
657 sizeof(void *) * channels, GFP_KERNEL);
658 if (!local->int_scan_req)
Johannes Berg2a519312009-02-10 21:25:55 +0100659 return -ENOMEM;
660
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700661 /* if low-level driver supports AP, we also support VLAN */
662 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP))
663 local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
664
665 /* mac80211 always supports monitor */
666 local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
667
Johannes Berg5eb5a522010-08-25 14:34:01 +0200668#ifndef CONFIG_MAC80211_MESH
669 /* mesh depends on Kconfig, but drivers should set it if they want */
670 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
671#endif
672
Johannes Berga621fa42010-08-27 14:26:54 +0300673 /* mac80211 supports control port protocol changing */
674 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
675
Johannes Berg77965c92009-02-18 18:45:06 +0100676 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
677 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
678 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
679 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
680
Kalle Valoab133152010-01-12 10:42:31 +0200681 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
682 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
683 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
684
Johannes Bergde95a542009-04-01 11:58:36 +0200685 /*
686 * Calculate scan IE length -- we need this to alloc
687 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300688 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200689 * information -- SSID is the driver's responsibility.
690 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300691 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
692 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200693 if (supp_ht)
694 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200695
696 if (!local->ops->hw_scan) {
697 /* For hw_scan, driver needs to set these up. */
698 local->hw.wiphy->max_scan_ssids = 4;
699 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
700 }
701
702 /*
703 * If the driver supports any scan IEs, then assume the
704 * limit includes the IEs mac80211 will add, otherwise
705 * leave it at zero and let the driver sort it out; we
706 * still pass our IEs to the driver but userspace will
707 * not be allowed to in that case.
708 */
709 if (local->hw.wiphy->max_scan_ie_len)
710 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
711
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300712 /* Set up cipher suites unless driver already did */
713 if (!local->hw.wiphy->cipher_suites) {
714 local->hw.wiphy->cipher_suites = cipher_suites;
715 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
716 if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
717 local->hw.wiphy->n_cipher_suites--;
718 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200719 if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300720 if (local->hw.wiphy->cipher_suites == cipher_suites) {
721 local->hw.wiphy->cipher_suites += 2;
722 local->hw.wiphy->n_cipher_suites -= 2;
723 } else {
724 u32 *suites;
725 int r, w = 0;
726
727 /* Filter out WEP */
728
729 suites = kmemdup(
730 local->hw.wiphy->cipher_suites,
731 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
732 GFP_KERNEL);
733 if (!suites)
734 return -ENOMEM;
735 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
736 u32 suite = local->hw.wiphy->cipher_suites[r];
737 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
738 suite == WLAN_CIPHER_SUITE_WEP104)
739 continue;
740 suites[w++] = suite;
741 }
742 local->hw.wiphy->cipher_suites = suites;
743 local->hw.wiphy->n_cipher_suites = w;
744 local->wiphy_ciphers_allocated = true;
745 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200746 }
Johannes Berg25e47c182009-04-02 20:14:06 +0200747
Johannes Berga2939112010-12-14 17:54:28 +0100748 local->hw.wiphy->max_remain_on_channel_duration = 5000;
749
Jiri Bencf0706e82007-05-05 11:45:53 -0700750 result = wiphy_register(local->hw.wiphy);
751 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +0100752 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -0700753
Johannes Berge2530082008-05-17 00:57:14 +0200754 /*
755 * We use the number of queues for feature tests (QoS, HT) internally
756 * so restrict them appropriately.
757 */
Johannes Berge2530082008-05-17 00:57:14 +0200758 if (hw->queues > IEEE80211_MAX_QUEUES)
759 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +0200760
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400761 local->workqueue =
Tejun Heo99b88a02010-10-15 17:35:28 +0200762 alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400763 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -0700764 result = -ENOMEM;
765 goto fail_workqueue;
766 }
767
Johannes Bergb306f452007-07-10 19:32:08 +0200768 /*
769 * The hardware needs headroom for sending the frame,
770 * and we need some headroom for passing the frame to monitor
771 * interfaces, but never both at the same time.
772 */
Gertjan van Wingerded24deb22009-12-04 23:46:54 +0100773 BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM !=
774 sizeof(struct ieee80211_tx_status_rtap_hdr));
Jiri Benc33ccad32007-07-18 17:10:44 +0200775 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
776 sizeof(struct ieee80211_tx_status_rtap_hdr));
Johannes Bergb306f452007-07-10 19:32:08 +0200777
Jiri Bence9f207f2007-05-05 11:46:38 -0700778 debugfs_hw_add(local);
779
Helmut Schaab4469182010-02-24 14:19:37 +0100780 /*
781 * if the driver doesn't specify a max listen interval we
782 * use 5 which should be a safe default
783 */
Tomas Winklerea95bba2008-07-18 13:53:00 +0800784 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +0100785 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +0800786
787 local->hw.conf.listen_interval = local->hw.max_listen_interval;
788
Juuso Oikarinenff616382010-06-09 09:51:52 +0300789 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +0300790
Jiri Bencf0706e82007-05-05 11:45:53 -0700791 result = sta_info_start(local);
792 if (result < 0)
793 goto fail_sta_info;
794
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100795 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -0400796 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700797 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
798 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100799
Jiri Bencf0706e82007-05-05 11:45:53 -0700800 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -0700801
Johannes Berg830f9032007-10-28 14:51:05 +0100802 result = ieee80211_init_rate_ctrl_alg(local,
803 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -0700804 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700805 wiphy_debug(local->hw.wiphy,
806 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -0700807 goto fail_rate;
808 }
809
Johannes Berg8dffff22008-12-09 00:10:30 +0100810 /* add one default STA interface if supported */
811 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
812 result = ieee80211_if_add(local, "wlan%d", NULL,
813 NL80211_IFTYPE_STATION, NULL);
814 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700815 wiphy_warn(local->hw.wiphy,
816 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +0100817 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700818
Jiri Bencf0706e82007-05-05 11:45:53 -0700819 rtnl_unlock();
820
821 ieee80211_led_init(local);
822
Johannes Berg10f644a2009-04-16 13:17:25 +0200823 local->network_latency_notifier.notifier_call =
824 ieee80211_max_network_latency;
825 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
826 &local->network_latency_notifier);
Johannes Berg10f644a2009-04-16 13:17:25 +0200827 if (result) {
828 rtnl_lock();
829 goto fail_pm_qos;
830 }
831
John W. Linville26b36cf2010-06-04 14:25:44 -0400832#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300833 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
834 result = register_inetaddr_notifier(&local->ifa_notifier);
835 if (result)
836 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -0400837#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300838
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400839 netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll,
840 local->hw.napi_weight);
841
Jiri Bencf0706e82007-05-05 11:45:53 -0700842 return 0;
843
Juuso Oikarinen93c08c32010-08-03 08:22:25 +0300844#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300845 fail_ifa:
846 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
847 &local->network_latency_notifier);
848 rtnl_lock();
Juuso Oikarinen93c08c32010-08-03 08:22:25 +0300849#endif
Johannes Berg10f644a2009-04-16 13:17:25 +0200850 fail_pm_qos:
851 ieee80211_led_exit(local);
852 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +0200853 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -0700854 rtnl_unlock();
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100855 ieee80211_wep_free(local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700856 sta_info_stop(local);
Johannes Berg10f644a2009-04-16 13:17:25 +0200857 fail_sta_info:
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400858 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +0200859 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -0700860 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +0200861 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300862 if (local->wiphy_ciphers_allocated)
863 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +0200864 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -0700865 return result;
866}
867EXPORT_SYMBOL(ieee80211_register_hw);
868
Jiri Bencf0706e82007-05-05 11:45:53 -0700869void ieee80211_unregister_hw(struct ieee80211_hw *hw)
870{
871 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -0700872
873 tasklet_kill(&local->tx_pending_tasklet);
874 tasklet_kill(&local->tasklet);
875
Johannes Berg10f644a2009-04-16 13:17:25 +0200876 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
877 &local->network_latency_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -0400878#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300879 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -0400880#endif
Johannes Berg10f644a2009-04-16 13:17:25 +0200881
Jiri Bencf0706e82007-05-05 11:45:53 -0700882 rtnl_lock();
883
Johannes Berg79010422007-09-18 17:29:21 -0400884 /*
885 * At this point, interface list manipulations are fine
886 * because the driver cannot be handing us frames any
887 * more and the tasklet is killed.
888 */
Johannes Berg75636522008-07-09 14:40:35 +0200889 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +0200890
Jiri Bencf0706e82007-05-05 11:45:53 -0700891 rtnl_unlock();
892
Johannes Berg071249b2010-08-25 14:47:38 +0200893 /*
894 * Now all work items will be gone, but the
895 * timer might still be armed, so delete it
896 */
897 del_timer_sync(&local->work_timer);
898
Christian Lamparter258086a2010-08-22 23:48:25 +0200899 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +0200900 cancel_work_sync(&local->reconfig_filter);
901
Jiri Bencf0706e82007-05-05 11:45:53 -0700902 ieee80211_clear_tx_pending(local);
903 sta_info_stop(local);
904 rate_control_deinitialize(local);
905
Joe Perchesf64f9e72009-11-29 16:55:45 -0800906 if (skb_queue_len(&local->skb_queue) ||
907 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700908 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -0700909 skb_queue_purge(&local->skb_queue);
910 skb_queue_purge(&local->skb_queue_unreliable);
911
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400912 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -0700913 wiphy_unregister(local->hw.wiphy);
914 ieee80211_wep_free(local);
915 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +0200916 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -0700917}
918EXPORT_SYMBOL(ieee80211_unregister_hw);
919
920void ieee80211_free_hw(struct ieee80211_hw *hw)
921{
922 struct ieee80211_local *local = hw_to_local(hw);
923
Johannes Bergc771c9d2009-01-23 22:54:03 +0100924 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200925 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +0100926
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300927 if (local->wiphy_ciphers_allocated)
928 kfree(local->hw.wiphy->cipher_suites);
929
Jiri Bencf0706e82007-05-05 11:45:53 -0700930 wiphy_free(local->hw.wiphy);
931}
932EXPORT_SYMBOL(ieee80211_free_hw);
933
Jiri Bencf0706e82007-05-05 11:45:53 -0700934static int __init ieee80211_init(void)
935{
936 struct sk_buff *skb;
937 int ret;
938
Johannes Berge039fa42008-05-15 12:55:29 +0200939 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
940 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +0200941 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -0700942
Felix Fietkaucccf1292008-10-05 18:07:45 +0200943 ret = rc80211_minstrel_init();
944 if (ret)
945 return ret;
946
Felix Fietkauec8aa662010-05-13 16:48:03 +0200947 ret = rc80211_minstrel_ht_init();
948 if (ret)
949 goto err_minstrel;
950
Johannes Berg4b475892008-01-02 15:17:03 +0100951 ret = rc80211_pid_init();
Mattias Nisslerad018372007-12-19 01:25:57 +0100952 if (ret)
Johannes Berg47846c92009-11-25 17:46:19 +0100953 goto err_pid;
Jiri Bencf0706e82007-05-05 11:45:53 -0700954
Johannes Berg47846c92009-11-25 17:46:19 +0100955 ret = ieee80211_iface_init();
956 if (ret)
957 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -0700958
Jiri Bencf0706e82007-05-05 11:45:53 -0700959 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +0100960 err_netdev:
961 rc80211_pid_exit();
962 err_pid:
Felix Fietkauec8aa662010-05-13 16:48:03 +0200963 rc80211_minstrel_ht_exit();
964 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +0100965 rc80211_minstrel_exit();
966
967 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -0700968}
969
Jiri Bencf0706e82007-05-05 11:45:53 -0700970static void __exit ieee80211_exit(void)
971{
Johannes Berg4b475892008-01-02 15:17:03 +0100972 rc80211_pid_exit();
Felix Fietkauec8aa662010-05-13 16:48:03 +0200973 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +0200974 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +0100975
Luis Carlos Cobof7a92142008-02-23 15:17:18 +0100976 if (mesh_allocated)
977 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +0100978
Johannes Berg47846c92009-11-25 17:46:19 +0100979 ieee80211_iface_exit();
Jiri Bencf0706e82007-05-05 11:45:53 -0700980}
981
982
Johannes Bergca9938f2007-09-11 12:50:32 +0200983subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -0700984module_exit(ieee80211_exit);
985
986MODULE_DESCRIPTION("IEEE 802.11 subsystem");
987MODULE_LICENSE("GPL");