blob: 866f269183cf9a1532f317e3b9f52bc437a98213 [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 Berg681c4d02011-01-12 13:40:33 +010036static struct lock_class_key ieee80211_rx_skb_queue_class;
37
Johannes Berg0d143fe2008-09-11 00:01:59 +020038void ieee80211_configure_filter(struct ieee80211_local *local)
Johannes Berg4150c572007-09-17 01:29:23 -040039{
Johannes Berg3ac64be2009-08-17 16:16:53 +020040 u64 mc;
Johannes Berg4150c572007-09-17 01:29:23 -040041 unsigned int changed_flags;
42 unsigned int new_flags = 0;
43
Johannes Berg53918992007-09-26 15:19:47 +020044 if (atomic_read(&local->iff_promiscs))
Johannes Berg4150c572007-09-17 01:29:23 -040045 new_flags |= FIF_PROMISC_IN_BSS;
46
Johannes Berg53918992007-09-26 15:19:47 +020047 if (atomic_read(&local->iff_allmultis))
Johannes Berg4150c572007-09-17 01:29:23 -040048 new_flags |= FIF_ALLMULTI;
49
Johannes Berg3ac64be2009-08-17 16:16:53 +020050 if (local->monitors || local->scanning)
Michael Wu8cc9a732008-01-31 19:48:23 +010051 new_flags |= FIF_BCN_PRBRESP_PROMISC;
52
Johannes Berg7be50862010-10-13 12:06:24 +020053 if (local->fif_probe_req || local->probe_req_reg)
54 new_flags |= FIF_PROBE_REQ;
55
Michael Wu8cc9a732008-01-31 19:48:23 +010056 if (local->fif_fcsfail)
57 new_flags |= FIF_FCSFAIL;
58
59 if (local->fif_plcpfail)
60 new_flags |= FIF_PLCPFAIL;
61
62 if (local->fif_control)
63 new_flags |= FIF_CONTROL;
64
65 if (local->fif_other_bss)
66 new_flags |= FIF_OTHER_BSS;
Johannes Berg4150c572007-09-17 01:29:23 -040067
Igor Perminove3b90ca2009-08-04 16:48:51 +040068 if (local->fif_pspoll)
69 new_flags |= FIF_PSPOLL;
70
Johannes Berg3ac64be2009-08-17 16:16:53 +020071 spin_lock_bh(&local->filter_lock);
Johannes Berg4150c572007-09-17 01:29:23 -040072 changed_flags = local->filter_flags ^ new_flags;
73
Jiri Pirko22bedad32010-04-01 21:22:57 +000074 mc = drv_prepare_multicast(local, &local->mc_list);
Johannes Berg3ac64be2009-08-17 16:16:53 +020075 spin_unlock_bh(&local->filter_lock);
76
Johannes Berg4150c572007-09-17 01:29:23 -040077 /* be a bit nasty */
78 new_flags |= (1<<31);
79
Johannes Berg3ac64be2009-08-17 16:16:53 +020080 drv_configure_filter(local, changed_flags, &new_flags, mc);
Johannes Berg4150c572007-09-17 01:29:23 -040081
82 WARN_ON(new_flags & (1<<31));
83
84 local->filter_flags = new_flags & ~(1<<31);
85}
86
Johannes Berg3ac64be2009-08-17 16:16:53 +020087static void ieee80211_reconfig_filter(struct work_struct *work)
88{
89 struct ieee80211_local *local =
90 container_of(work, struct ieee80211_local, reconfig_filter);
91
92 ieee80211_configure_filter(local);
93}
94
Ben Greearb23b0252011-02-04 11:54:17 -080095/*
96 * Returns true if we are logically configured to be on
97 * the operating channel AND the hardware-conf is currently
98 * configured on the operating channel. Compares channel-type
99 * as well.
100 */
101bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local)
102{
103 struct ieee80211_channel *chan, *scan_chan;
104 enum nl80211_channel_type channel_type;
105
106 /* This logic needs to match logic in ieee80211_hw_config */
107 if (local->scan_channel) {
108 chan = local->scan_channel;
Ben Greear4f2e9d92011-02-07 13:44:35 -0800109 /* If scanning on oper channel, use whatever channel-type
110 * is currently in use.
111 */
112 if (chan == local->oper_channel)
113 channel_type = local->_oper_channel_type;
114 else
115 channel_type = NL80211_CHAN_NO_HT;
Ben Greearb23b0252011-02-04 11:54:17 -0800116 } else if (local->tmp_channel) {
117 chan = scan_chan = local->tmp_channel;
118 channel_type = local->tmp_channel_type;
119 } else {
120 chan = local->oper_channel;
121 channel_type = local->_oper_channel_type;
122 }
123
124 if (chan != local->oper_channel ||
125 channel_type != local->_oper_channel_type)
126 return false;
127
128 /* Check current hardware-config against oper_channel. */
129 if ((local->oper_channel != local->hw.conf.channel) ||
130 (local->_oper_channel_type != local->hw.conf.channel_type))
131 return false;
132
133 return true;
134}
135
Johannes Berge8975582008-10-09 12:18:51 +0200136int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
Johannes Bergb2c258f2007-07-27 15:43:23 +0200137{
Johannes Berg58905ca2009-05-07 14:23:01 +0200138 struct ieee80211_channel *chan, *scan_chan;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200139 int ret = 0;
Johannes Berge8975582008-10-09 12:18:51 +0200140 int power;
Sujith094d05d2008-12-12 11:57:43 +0530141 enum nl80211_channel_type channel_type;
Felix Fietkauffd27782010-07-29 17:36:43 +0200142 u32 offchannel_flag;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200143
Johannes Bergcb121ba2008-10-14 16:38:55 +0200144 might_sleep();
145
Johannes Berg58905ca2009-05-07 14:23:01 +0200146 scan_chan = local->scan_channel;
147
Ben Greearb23b0252011-02-04 11:54:17 -0800148 /* If this off-channel logic ever changes, ieee80211_on_oper_channel
149 * may need to change as well.
150 */
Felix Fietkauffd27782010-07-29 17:36:43 +0200151 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berg58905ca2009-05-07 14:23:01 +0200152 if (scan_chan) {
153 chan = scan_chan;
Ben Greear4f2e9d92011-02-07 13:44:35 -0800154 /* If scanning on oper channel, use whatever channel-type
155 * is currently in use.
156 */
157 if (chan == local->oper_channel)
158 channel_type = local->_oper_channel_type;
159 else
160 channel_type = NL80211_CHAN_NO_HT;
Ben Greearb23b0252011-02-04 11:54:17 -0800161 } else if (local->tmp_channel) {
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100162 chan = scan_chan = local->tmp_channel;
163 channel_type = local->tmp_channel_type;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200164 } else {
Johannes Bergb2c258f2007-07-27 15:43:23 +0200165 chan = local->oper_channel;
Johannes Berg0aaffa92010-05-05 15:28:27 +0200166 channel_type = local->_oper_channel_type;
Johannes Berge8975582008-10-09 12:18:51 +0200167 }
Ben Greearb23b0252011-02-04 11:54:17 -0800168
169 if (chan != local->oper_channel ||
170 channel_type != local->_oper_channel_type)
171 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
172 else
173 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
174
Felix Fietkauffd27782010-07-29 17:36:43 +0200175 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200176
Felix Fietkauffd27782010-07-29 17:36:43 +0200177 if (offchannel_flag || chan != local->hw.conf.channel ||
Johannes Berg47979382009-01-07 10:13:27 +0100178 channel_type != local->hw.conf.channel_type) {
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200179 local->hw.conf.channel = chan;
Johannes Berg47979382009-01-07 10:13:27 +0100180 local->hw.conf.channel_type = channel_type;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200181 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
182 }
Johannes Berg8318d782008-01-24 19:38:38 +0100183
Johannes Berg0f782312009-12-01 13:37:02 +0100184 if (!conf_is_ht(&local->hw.conf)) {
185 /*
186 * mac80211.h documents that this is only valid
187 * when the channel is set to an HT type, and
188 * that otherwise STATIC is used.
189 */
190 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
191 } else if (local->hw.conf.smps_mode != local->smps_mode) {
192 local->hw.conf.smps_mode = local->smps_mode;
193 changed |= IEEE80211_CONF_CHANGE_SMPS;
194 }
195
Ben Greear59bdf3b2011-02-07 13:44:38 -0800196 if ((local->scanning & SCAN_SW_SCANNING) ||
197 (local->scanning & SCAN_HW_SCANNING))
Johannes Berge8975582008-10-09 12:18:51 +0200198 power = chan->max_power;
Johannes Berg8318d782008-01-24 19:38:38 +0100199 else
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530200 power = local->power_constr_level ?
201 (chan->max_power - local->power_constr_level) :
202 chan->max_power;
203
Johannes Berg47afbaf2009-04-07 15:22:28 +0200204 if (local->user_power_level >= 0)
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530205 power = min(power, local->user_power_level);
206
Johannes Berge8975582008-10-09 12:18:51 +0200207 if (local->hw.conf.power_level != power) {
208 changed |= IEEE80211_CONF_CHANGE_POWER;
209 local->hw.conf.power_level = power;
210 }
Johannes Berg8318d782008-01-24 19:38:38 +0100211
Johannes Berge8975582008-10-09 12:18:51 +0200212 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200213 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200214 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800215 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200216 * HW reconfiguration should never fail, the driver has told
217 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800218 *
219 * Current status:
220 * rfkill is not integrated with mac80211 and a
221 * configuration command can thus fail if hardware rfkill
222 * is enabled
223 *
224 * FIXME: integrate rfkill with mac80211 and then add this
225 * WARN_ON() back
226 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200227 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800228 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200229 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200230
231 return ret;
232}
233
Johannes Berg471b3ef2007-12-28 14:32:58 +0100234void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
235 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200236{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100237 struct ieee80211_local *local = sdata->local;
Johannes Berg9cef8732009-05-14 13:10:14 +0200238 static const u8 zero[ETH_ALEN] = { 0 };
Johannes Berg471b3ef2007-12-28 14:32:58 +0100239
240 if (!changed)
241 return;
242
Johannes Berg9cef8732009-05-14 13:10:14 +0200243 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
244 /*
245 * While not associated, claim a BSSID of all-zeroes
246 * so that drivers don't do any weird things with the
247 * BSSID at that time.
248 */
249 if (sdata->vif.bss_conf.assoc)
250 sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
251 else
252 sdata->vif.bss_conf.bssid = zero;
253 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200254 sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
255 else if (sdata->vif.type == NL80211_IFTYPE_AP)
Johannes Berg47846c92009-11-25 17:46:19 +0100256 sdata->vif.bss_conf.bssid = sdata->vif.addr;
Bill Jordan1be7fe82010-10-01 11:20:41 -0400257 else if (sdata->vif.type == NL80211_IFTYPE_WDS)
258 sdata->vif.bss_conf.bssid = NULL;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200259 else if (ieee80211_vif_is_mesh(&sdata->vif)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200260 sdata->vif.bss_conf.bssid = zero;
261 } else {
262 WARN_ON(1);
263 return;
264 }
265
266 switch (sdata->vif.type) {
267 case NL80211_IFTYPE_AP:
268 case NL80211_IFTYPE_ADHOC:
Bill Jordan1be7fe82010-10-01 11:20:41 -0400269 case NL80211_IFTYPE_WDS:
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200270 case NL80211_IFTYPE_MESH_POINT:
271 break;
272 default:
273 /* do not warn to simplify caller in scan.c */
274 changed &= ~BSS_CHANGED_BEACON_ENABLED;
275 if (WARN_ON(changed & BSS_CHANGED_BEACON))
276 return;
277 break;
278 }
279
280 if (changed & BSS_CHANGED_BEACON_ENABLED) {
Johannes Berg9607e6b2009-12-23 13:15:31 +0100281 if (local->quiescing || !ieee80211_sdata_running(sdata) ||
Ben Greearb23b0252011-02-04 11:54:17 -0800282 test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200283 sdata->vif.bss_conf.enable_beacon = false;
284 } else {
285 /*
286 * Beacon should be enabled, but AP mode must
287 * check whether there is a beacon configured.
288 */
289 switch (sdata->vif.type) {
290 case NL80211_IFTYPE_AP:
291 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200292 !!sdata->u.ap.beacon;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200293 break;
294 case NL80211_IFTYPE_ADHOC:
295 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200296 !!sdata->u.ibss.presp;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200297 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800298#ifdef CONFIG_MAC80211_MESH
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200299 case NL80211_IFTYPE_MESH_POINT:
Johannes Berg29cbe682010-12-03 09:20:44 +0100300 sdata->vif.bss_conf.enable_beacon =
301 !!sdata->u.mesh.mesh_id_len;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200302 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800303#endif
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200304 default:
305 /* not reached */
306 WARN_ON(1);
307 break;
308 }
309 }
310 }
311
Johannes Berg12375ef2009-11-25 20:30:31 +0100312 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200313}
314
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200315u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200316{
Johannes Bergbda39332008-10-11 01:51:51 +0200317 sdata->vif.bss_conf.use_cts_prot = false;
318 sdata->vif.bss_conf.use_short_preamble = false;
319 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200320 return BSS_CHANGED_ERP_CTS_PROT |
321 BSS_CHANGED_ERP_PREAMBLE |
322 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200323}
324
Jiri Bencf0706e82007-05-05 11:45:53 -0700325static void ieee80211_tasklet_handler(unsigned long data)
326{
327 struct ieee80211_local *local = (struct ieee80211_local *) data;
328 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700329
330 while ((skb = skb_dequeue(&local->skb_queue)) ||
331 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
332 switch (skb->pkt_type) {
333 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100334 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700335 * netstack. */
336 skb->pkt_type = 0;
Johannes Bergf1d58c22009-06-17 13:13:00 +0200337 ieee80211_rx(local_to_hw(local), skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700338 break;
339 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700340 skb->pkt_type = 0;
Johannes Berge039fa42008-05-15 12:55:29 +0200341 ieee80211_tx_status(local_to_hw(local), skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700342 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200343 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600344 WARN(1, "mac80211: Packet is of unknown type %d\n",
345 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700346 dev_kfree_skb(skb);
347 break;
348 }
349 }
350}
351
Johannes Bergf2753dd2009-04-14 10:09:24 +0200352static void ieee80211_restart_work(struct work_struct *work)
353{
354 struct ieee80211_local *local =
355 container_of(work, struct ieee80211_local, restart_work);
356
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200357 /* wait for scan work complete */
358 flush_workqueue(local->workqueue);
359
360 mutex_lock(&local->mtx);
Luciano Coelho79f460c2011-05-11 17:09:36 +0300361 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
362 local->sched_scanning,
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200363 "%s called with hardware scan in progress\n", __func__);
364 mutex_unlock(&local->mtx);
365
Johannes Bergf2753dd2009-04-14 10:09:24 +0200366 rtnl_lock();
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200367 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200368 ieee80211_reconfig(local);
369 rtnl_unlock();
370}
371
372void ieee80211_restart_hw(struct ieee80211_hw *hw)
373{
374 struct ieee80211_local *local = hw_to_local(hw);
375
Johannes Bergb5878a22010-04-07 16:48:40 +0200376 trace_api_restart_hw(local);
377
Michael Bueschb196d032011-03-07 13:09:12 +0100378 wiphy_info(hw->wiphy,
379 "Hardware restart was requested\n");
380
John W. Linville18145c62010-08-30 15:12:02 -0400381 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Bergf2753dd2009-04-14 10:09:24 +0200382 ieee80211_stop_queues_by_reason(hw,
383 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
384
385 schedule_work(&local->restart_work);
386}
387EXPORT_SYMBOL(ieee80211_restart_hw);
388
Johannes Berg0f782312009-12-01 13:37:02 +0100389static void ieee80211_recalc_smps_work(struct work_struct *work)
390{
391 struct ieee80211_local *local =
392 container_of(work, struct ieee80211_local, recalc_smps);
393
394 mutex_lock(&local->iflist_mtx);
Johannes Berg025e6be2010-10-05 10:41:47 +0200395 ieee80211_recalc_smps(local);
Johannes Berg0f782312009-12-01 13:37:02 +0100396 mutex_unlock(&local->iflist_mtx);
397}
398
John W. Linville26b36cf2010-06-04 14:25:44 -0400399#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300400static int ieee80211_ifa_changed(struct notifier_block *nb,
401 unsigned long data, void *arg)
402{
403 struct in_ifaddr *ifa = arg;
404 struct ieee80211_local *local =
405 container_of(nb, struct ieee80211_local,
406 ifa_notifier);
407 struct net_device *ndev = ifa->ifa_dev->dev;
408 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300409 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300410 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300411 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300412 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300413 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300414
415 /* Make sure it's our interface that got changed */
416 if (!wdev)
417 return NOTIFY_DONE;
418
419 if (wdev->wiphy != local->hw.wiphy)
420 return NOTIFY_DONE;
421
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300422 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300423 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300424
Johannes Berg26a58452010-08-27 12:35:55 +0200425 if (!ieee80211_sdata_running(sdata))
426 return NOTIFY_DONE;
427
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300428 /* ARP filtering is only supported in managed mode */
429 if (sdata->vif.type != NL80211_IFTYPE_STATION)
430 return NOTIFY_DONE;
431
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000432 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300433 if (!idev)
434 return NOTIFY_DONE;
435
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300436 ifmgd = &sdata->u.mgd;
437 mutex_lock(&ifmgd->mtx);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300438
439 /* Copy the addresses to the bss_conf list */
440 ifa = idev->ifa_list;
441 while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
442 bss_conf->arp_addr_list[c] = ifa->ifa_address;
443 ifa = ifa->ifa_next;
444 c++;
445 }
446
447 /* If not all addresses fit the list, disable filtering */
448 if (ifa) {
449 sdata->arp_filter_state = false;
450 c = 0;
451 } else {
452 sdata->arp_filter_state = true;
453 }
454 bss_conf->arp_addr_cnt = c;
455
456 /* Configure driver only if associated */
457 if (ifmgd->associated) {
458 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
459 ieee80211_bss_info_change_notify(sdata,
460 BSS_CHANGED_ARP_FILTER);
461 }
462
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300463 mutex_unlock(&ifmgd->mtx);
464
465 return NOTIFY_DONE;
466}
John W. Linville26b36cf2010-06-04 14:25:44 -0400467#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300468
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400469static int ieee80211_napi_poll(struct napi_struct *napi, int budget)
470{
471 struct ieee80211_local *local =
472 container_of(napi, struct ieee80211_local, napi);
473
474 return local->ops->napi_poll(&local->hw, budget);
475}
476
477void ieee80211_napi_schedule(struct ieee80211_hw *hw)
478{
479 struct ieee80211_local *local = hw_to_local(hw);
480
481 napi_schedule(&local->napi);
482}
483EXPORT_SYMBOL(ieee80211_napi_schedule);
484
485void ieee80211_napi_complete(struct ieee80211_hw *hw)
486{
487 struct ieee80211_local *local = hw_to_local(hw);
488
489 napi_complete(&local->napi);
490}
491EXPORT_SYMBOL(ieee80211_napi_complete);
492
Johannes Berg2e161f72010-08-12 15:38:38 +0200493/* There isn't a lot of sense in it, but you can transmit anything you like */
494static const struct ieee80211_txrx_stypes
495ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
496 [NL80211_IFTYPE_ADHOC] = {
497 .tx = 0xffff,
498 .rx = BIT(IEEE80211_STYPE_ACTION >> 4),
499 },
500 [NL80211_IFTYPE_STATION] = {
501 .tx = 0xffff,
502 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
503 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
504 },
505 [NL80211_IFTYPE_AP] = {
506 .tx = 0xffff,
507 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
508 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
509 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
510 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
511 BIT(IEEE80211_STYPE_AUTH >> 4) |
512 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
513 BIT(IEEE80211_STYPE_ACTION >> 4),
514 },
515 [NL80211_IFTYPE_AP_VLAN] = {
516 /* copy AP */
517 .tx = 0xffff,
518 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
519 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
520 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
521 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
522 BIT(IEEE80211_STYPE_AUTH >> 4) |
523 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
524 BIT(IEEE80211_STYPE_ACTION >> 4),
525 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200526 [NL80211_IFTYPE_P2P_CLIENT] = {
527 .tx = 0xffff,
528 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
529 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
530 },
531 [NL80211_IFTYPE_P2P_GO] = {
532 .tx = 0xffff,
533 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
534 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
535 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
536 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
537 BIT(IEEE80211_STYPE_AUTH >> 4) |
538 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
539 BIT(IEEE80211_STYPE_ACTION >> 4),
540 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800541 [NL80211_IFTYPE_MESH_POINT] = {
542 .tx = 0xffff,
Javier Cardona71839122011-04-07 15:08:31 -0700543 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
544 BIT(IEEE80211_STYPE_AUTH >> 4) |
545 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Javier Cardonac7108a72010-12-16 17:37:50 -0800546 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200547};
548
Jiri Bencf0706e82007-05-05 11:45:53 -0700549struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
550 const struct ieee80211_ops *ops)
551{
Jiri Bencf0706e82007-05-05 11:45:53 -0700552 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100553 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700554 struct wiphy *wiphy;
555
556 /* Ensure 32-byte alignment of our private data and hw private data.
557 * We use the wiphy priv data for both our ieee80211_local and for
558 * the driver's private data
559 *
560 * In memory it'll be like this:
561 *
562 * +-------------------------+
563 * | struct wiphy |
564 * +-------------------------+
565 * | struct ieee80211_local |
566 * +-------------------------+
567 * | driver's private data |
568 * +-------------------------+
569 *
570 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000571 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700572
573 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
574
575 if (!wiphy)
576 return NULL;
577
Johannes Berg2e161f72010-08-12 15:38:38 +0200578 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
579
Johannes Berg207aba62010-12-10 17:10:44 +0100580 wiphy->privid = mac80211_wiphy_privid;
581
Johannes Berg9bc383d2009-11-19 11:55:19 +0100582 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
583 WIPHY_FLAG_4ADDR_AP |
Jouni Malinenf0dc7992011-05-03 22:50:15 -0700584 WIPHY_FLAG_4ADDR_STATION;
Johannes Berg207aba62010-12-10 17:10:44 +0100585
586 if (!ops->set_key)
587 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200588
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100589 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700590
591 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200592
Jiri Bencf0706e82007-05-05 11:45:53 -0700593 local->hw.wiphy = wiphy;
594
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000595 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700596
Johannes Berg4480f15c2007-07-10 19:32:10 +0200597 BUG_ON(!ops->tx);
Johannes Berg4150c572007-09-17 01:29:23 -0400598 BUG_ON(!ops->start);
599 BUG_ON(!ops->stop);
Johannes Berg4480f15c2007-07-10 19:32:10 +0200600 BUG_ON(!ops->config);
601 BUG_ON(!ops->add_interface);
Johannes Berg4150c572007-09-17 01:29:23 -0400602 BUG_ON(!ops->remove_interface);
603 BUG_ON(!ops->configure_filter);
Jiri Bencf0706e82007-05-05 11:45:53 -0700604 local->ops = ops;
605
Johannes Berge6a98542008-10-21 12:40:02 +0200606 /* set up some defaults */
607 local->hw.queues = 1;
608 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200609 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200610 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200611 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
612 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergc428c892009-04-29 00:28:18 +0200613 local->user_power_level = -1;
Kalle Valo50ae0cf2010-01-12 10:42:39 +0200614 local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
615 local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
Jiri Bencf0706e82007-05-05 11:45:53 -0700616
Johannes Berg79010422007-09-18 17:29:21 -0400617 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000618
619 __hw_addr_init(&local->mc_list);
620
Johannes Bergc771c9d2009-01-23 22:54:03 +0100621 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200622 mutex_init(&local->mtx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700623
Johannes Bergad0e2b52010-06-01 10:19:19 +0200624 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200625 spin_lock_init(&local->filter_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200626 spin_lock_init(&local->queue_stop_reason_lock);
627
Johannes Berg681c4d02011-01-12 13:40:33 +0100628 /*
629 * The rx_skb_queue is only accessed from tasklets,
630 * but other SKB queues are used from within IRQ
631 * context. Therefore, this one needs a different
632 * locking class so our direct, non-irq-safe use of
633 * the queue's lock doesn't throw lockdep warnings.
634 */
635 skb_queue_head_init_class(&local->rx_skb_queue,
636 &ieee80211_rx_skb_queue_class);
Christian Lamparter24a8fda2010-12-30 17:25:29 +0100637
Johannes Bergc2b13452008-09-11 00:01:55 +0200638 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700639
Johannes Bergaf6b6372009-12-23 13:15:35 +0100640 ieee80211_work_init(local);
641
Johannes Bergf2753dd2009-04-14 10:09:24 +0200642 INIT_WORK(&local->restart_work, ieee80211_restart_work);
643
Johannes Berg3ac64be2009-08-17 16:16:53 +0200644 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100645 INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
646 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200647
Kalle Valo520eb822008-12-18 23:35:27 +0200648 INIT_WORK(&local->dynamic_ps_enable_work,
649 ieee80211_dynamic_ps_enable_work);
650 INIT_WORK(&local->dynamic_ps_disable_work,
651 ieee80211_dynamic_ps_disable_work);
652 setup_timer(&local->dynamic_ps_timer,
653 ieee80211_dynamic_ps_timer, (unsigned long) local);
654
Luciano Coelho85a99942011-05-12 16:28:29 +0300655 INIT_WORK(&local->sched_scan_stopped_work,
656 ieee80211_sched_scan_stopped_work);
657
Jiri Bencf0706e82007-05-05 11:45:53 -0700658 sta_info_init(local);
659
Johannes Berga6a67db2010-06-10 10:21:41 +0200660 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100661 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200662 atomic_set(&local->agg_queue_stop[i], 0);
663 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700664 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
665 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700666
667 tasklet_init(&local->tasklet,
668 ieee80211_tasklet_handler,
669 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700670
671 skb_queue_head_init(&local->skb_queue);
672 skb_queue_head_init(&local->skb_queue_unreliable);
673
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400674 /* init dummy netdev for use w/ NAPI */
675 init_dummy_netdev(&local->napi_dev);
676
Johannes Bergfe67c912010-11-27 20:02:59 +0100677 ieee80211_led_names(local);
678
Johannes Berg21f83582010-12-18 17:20:47 +0100679 ieee80211_hw_roc_setup(local);
680
Jiri Bencf0706e82007-05-05 11:45:53 -0700681 return local_to_hw(local);
682}
683EXPORT_SYMBOL(ieee80211_alloc_hw);
684
685int ieee80211_register_hw(struct ieee80211_hw *hw)
686{
687 struct ieee80211_local *local = hw_to_local(hw);
Johannes Berg7527a782011-05-13 10:58:57 +0200688 int result, i;
Johannes Berg8318d782008-01-24 19:38:38 +0100689 enum ieee80211_band band;
Johannes Bergbe4a4b62010-05-03 08:49:48 +0200690 int channels, max_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200691 bool supp_ht;
Johannes Berg25e47c12009-04-02 20:14:06 +0200692 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200693 /* keep WEP first, it may be removed below */
Johannes Berg25e47c12009-04-02 20:14:06 +0200694 WLAN_CIPHER_SUITE_WEP40,
695 WLAN_CIPHER_SUITE_WEP104,
696 WLAN_CIPHER_SUITE_TKIP,
697 WLAN_CIPHER_SUITE_CCMP,
698
699 /* keep last -- depends on hw flags! */
700 WLAN_CIPHER_SUITE_AES_CMAC
701 };
Johannes Berg8318d782008-01-24 19:38:38 +0100702
Larry Finger38bb3e92011-05-05 18:48:47 -0500703 if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns)
704#ifdef CONFIG_PM
705 && (!local->ops->suspend || !local->ops->resume)
706#endif
707 )
Johannes Bergeecc4802011-05-04 15:37:29 +0200708 return -EINVAL;
709
Helmut Schaa78be49e2010-10-02 11:31:55 +0200710 if (hw->max_report_rates == 0)
711 hw->max_report_rates = hw->max_rates;
712
Johannes Berg8318d782008-01-24 19:38:38 +0100713 /*
714 * generic code guarantees at least one band,
715 * set this very early because much code assumes
716 * that hw.conf.channel is assigned
717 */
Johannes Berg2a519312009-02-10 21:25:55 +0100718 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200719 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200720 supp_ht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100721 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
722 struct ieee80211_supported_band *sband;
723
724 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200725 if (!sband)
726 continue;
727 if (!local->oper_channel) {
Johannes Berg8318d782008-01-24 19:38:38 +0100728 /* init channel we're on */
729 local->hw.conf.channel =
Johannes Berg58905ca2009-05-07 14:23:01 +0200730 local->oper_channel = &sband->channels[0];
731 local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
Johannes Berg8318d782008-01-24 19:38:38 +0100732 }
Johannes Bergde95a542009-04-01 11:58:36 +0200733 channels += sband->n_channels;
734
735 if (max_bitrates < sband->n_bitrates)
736 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200737 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Johannes Berg8318d782008-01-24 19:38:38 +0100738 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700739
Johannes Berg5ba63532009-08-07 17:54:07 +0200740 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
741 sizeof(void *) * channels, GFP_KERNEL);
742 if (!local->int_scan_req)
Johannes Berg2a519312009-02-10 21:25:55 +0100743 return -ENOMEM;
744
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700745 /* if low-level driver supports AP, we also support VLAN */
Johannes Berg7527a782011-05-13 10:58:57 +0200746 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
747 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
748 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
749 }
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700750
751 /* mac80211 always supports monitor */
Johannes Berg7527a782011-05-13 10:58:57 +0200752 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
753 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
754
Johannes Berg8e621fc2011-05-14 01:55:23 +0200755 /*
756 * mac80211 doesn't support more than 1 channel, and also not more
757 * than one IBSS interface
758 */
759 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
760 const struct ieee80211_iface_combination *c;
761 int j;
762
763 c = &hw->wiphy->iface_combinations[i];
764
765 if (c->num_different_channels > 1)
Johannes Berg7527a782011-05-13 10:58:57 +0200766 return -EINVAL;
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700767
Johannes Berg8e621fc2011-05-14 01:55:23 +0200768 for (j = 0; j < c->n_limits; j++)
769 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
770 c->limits[j].max > 1)
771 return -EINVAL;
772 }
773
Johannes Berg5eb5a522010-08-25 14:34:01 +0200774#ifndef CONFIG_MAC80211_MESH
775 /* mesh depends on Kconfig, but drivers should set it if they want */
776 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
777#endif
778
Javier Cardona1570ca52011-04-07 15:08:35 -0700779 /* if the underlying driver supports mesh, mac80211 will (at least)
780 * provide routing of mesh authentication frames to userspace */
781 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
782 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
783
Johannes Berga621fa42010-08-27 14:26:54 +0300784 /* mac80211 supports control port protocol changing */
785 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
786
Johannes Berg77965c92009-02-18 18:45:06 +0100787 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
788 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
789 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
790 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
791
Kalle Valoab133152010-01-12 10:42:31 +0200792 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
793 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
794 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
795
Johannes Bergde95a542009-04-01 11:58:36 +0200796 /*
797 * Calculate scan IE length -- we need this to alloc
798 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300799 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200800 * information -- SSID is the driver's responsibility.
801 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300802 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
803 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200804 if (supp_ht)
805 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200806
807 if (!local->ops->hw_scan) {
808 /* For hw_scan, driver needs to set these up. */
809 local->hw.wiphy->max_scan_ssids = 4;
810 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
811 }
812
813 /*
814 * If the driver supports any scan IEs, then assume the
815 * limit includes the IEs mac80211 will add, otherwise
816 * leave it at zero and let the driver sort it out; we
817 * still pass our IEs to the driver but userspace will
818 * not be allowed to in that case.
819 */
820 if (local->hw.wiphy->max_scan_ie_len)
821 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
822
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300823 /* Set up cipher suites unless driver already did */
824 if (!local->hw.wiphy->cipher_suites) {
825 local->hw.wiphy->cipher_suites = cipher_suites;
826 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
827 if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
828 local->hw.wiphy->n_cipher_suites--;
829 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200830 if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300831 if (local->hw.wiphy->cipher_suites == cipher_suites) {
832 local->hw.wiphy->cipher_suites += 2;
833 local->hw.wiphy->n_cipher_suites -= 2;
834 } else {
835 u32 *suites;
836 int r, w = 0;
837
838 /* Filter out WEP */
839
840 suites = kmemdup(
841 local->hw.wiphy->cipher_suites,
842 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
843 GFP_KERNEL);
844 if (!suites)
845 return -ENOMEM;
846 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
847 u32 suite = local->hw.wiphy->cipher_suites[r];
848 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
849 suite == WLAN_CIPHER_SUITE_WEP104)
850 continue;
851 suites[w++] = suite;
852 }
853 local->hw.wiphy->cipher_suites = suites;
854 local->hw.wiphy->n_cipher_suites = w;
855 local->wiphy_ciphers_allocated = true;
856 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200857 }
Johannes Berg25e47c12009-04-02 20:14:06 +0200858
Johannes Berg21f83582010-12-18 17:20:47 +0100859 if (!local->ops->remain_on_channel)
860 local->hw.wiphy->max_remain_on_channel_duration = 5000;
Johannes Berga2939112010-12-14 17:54:28 +0100861
Luciano Coelho79f460c2011-05-11 17:09:36 +0300862 if (local->ops->sched_scan_start)
863 local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
864
Jiri Bencf0706e82007-05-05 11:45:53 -0700865 result = wiphy_register(local->hw.wiphy);
866 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +0100867 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -0700868
Johannes Berge2530082008-05-17 00:57:14 +0200869 /*
870 * We use the number of queues for feature tests (QoS, HT) internally
871 * so restrict them appropriately.
872 */
Johannes Berge2530082008-05-17 00:57:14 +0200873 if (hw->queues > IEEE80211_MAX_QUEUES)
874 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +0200875
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400876 local->workqueue =
Tejun Heo99b88a02010-10-15 17:35:28 +0200877 alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400878 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -0700879 result = -ENOMEM;
880 goto fail_workqueue;
881 }
882
Johannes Bergb306f452007-07-10 19:32:08 +0200883 /*
884 * The hardware needs headroom for sending the frame,
885 * and we need some headroom for passing the frame to monitor
886 * interfaces, but never both at the same time.
887 */
Johannes Berg40b275b2011-05-13 14:15:49 +0200888#ifndef __CHECKER__
Gertjan van Wingerded24deb22009-12-04 23:46:54 +0100889 BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM !=
890 sizeof(struct ieee80211_tx_status_rtap_hdr));
Johannes Berg40b275b2011-05-13 14:15:49 +0200891#endif
Jiri Benc33ccad32007-07-18 17:10:44 +0200892 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
893 sizeof(struct ieee80211_tx_status_rtap_hdr));
Johannes Bergb306f452007-07-10 19:32:08 +0200894
Jiri Bence9f207f2007-05-05 11:46:38 -0700895 debugfs_hw_add(local);
896
Helmut Schaab4469182010-02-24 14:19:37 +0100897 /*
898 * if the driver doesn't specify a max listen interval we
899 * use 5 which should be a safe default
900 */
Tomas Winklerea95bba2008-07-18 13:53:00 +0800901 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +0100902 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +0800903
904 local->hw.conf.listen_interval = local->hw.max_listen_interval;
905
Juuso Oikarinenff616382010-06-09 09:51:52 +0300906 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +0300907
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100908 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -0400909 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700910 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
911 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100912
Jiri Bencf0706e82007-05-05 11:45:53 -0700913 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -0700914
Johannes Berg830f9032007-10-28 14:51:05 +0100915 result = ieee80211_init_rate_ctrl_alg(local,
916 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -0700917 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700918 wiphy_debug(local->hw.wiphy,
919 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -0700920 goto fail_rate;
921 }
922
Johannes Berg8dffff22008-12-09 00:10:30 +0100923 /* add one default STA interface if supported */
924 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
925 result = ieee80211_if_add(local, "wlan%d", NULL,
926 NL80211_IFTYPE_STATION, NULL);
927 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700928 wiphy_warn(local->hw.wiphy,
929 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +0100930 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700931
Jiri Bencf0706e82007-05-05 11:45:53 -0700932 rtnl_unlock();
933
934 ieee80211_led_init(local);
935
Johannes Berg10f644a2009-04-16 13:17:25 +0200936 local->network_latency_notifier.notifier_call =
937 ieee80211_max_network_latency;
938 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
939 &local->network_latency_notifier);
Johannes Berg10f644a2009-04-16 13:17:25 +0200940 if (result) {
941 rtnl_lock();
942 goto fail_pm_qos;
943 }
944
John W. Linville26b36cf2010-06-04 14:25:44 -0400945#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300946 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
947 result = register_inetaddr_notifier(&local->ifa_notifier);
948 if (result)
949 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -0400950#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300951
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400952 netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll,
953 local->hw.napi_weight);
954
Jiri Bencf0706e82007-05-05 11:45:53 -0700955 return 0;
956
Juuso Oikarinen93c08c32010-08-03 08:22:25 +0300957#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300958 fail_ifa:
959 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
960 &local->network_latency_notifier);
961 rtnl_lock();
Juuso Oikarinen93c08c32010-08-03 08:22:25 +0300962#endif
Johannes Berg10f644a2009-04-16 13:17:25 +0200963 fail_pm_qos:
964 ieee80211_led_exit(local);
965 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +0200966 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -0700967 rtnl_unlock();
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100968 ieee80211_wep_free(local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700969 sta_info_stop(local);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400970 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +0200971 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -0700972 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +0200973 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300974 if (local->wiphy_ciphers_allocated)
975 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +0200976 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -0700977 return result;
978}
979EXPORT_SYMBOL(ieee80211_register_hw);
980
Jiri Bencf0706e82007-05-05 11:45:53 -0700981void ieee80211_unregister_hw(struct ieee80211_hw *hw)
982{
983 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -0700984
985 tasklet_kill(&local->tx_pending_tasklet);
986 tasklet_kill(&local->tasklet);
987
Johannes Berg10f644a2009-04-16 13:17:25 +0200988 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
989 &local->network_latency_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -0400990#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300991 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -0400992#endif
Johannes Berg10f644a2009-04-16 13:17:25 +0200993
Jiri Bencf0706e82007-05-05 11:45:53 -0700994 rtnl_lock();
995
Johannes Berg79010422007-09-18 17:29:21 -0400996 /*
997 * At this point, interface list manipulations are fine
998 * because the driver cannot be handing us frames any
999 * more and the tasklet is killed.
1000 */
Johannes Berg75636522008-07-09 14:40:35 +02001001 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +02001002
Jiri Bencf0706e82007-05-05 11:45:53 -07001003 rtnl_unlock();
1004
Johannes Berg071249b2010-08-25 14:47:38 +02001005 /*
1006 * Now all work items will be gone, but the
1007 * timer might still be armed, so delete it
1008 */
1009 del_timer_sync(&local->work_timer);
1010
Christian Lamparter258086a2010-08-22 23:48:25 +02001011 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001012 cancel_work_sync(&local->reconfig_filter);
1013
Jiri Bencf0706e82007-05-05 11:45:53 -07001014 ieee80211_clear_tx_pending(local);
1015 sta_info_stop(local);
1016 rate_control_deinitialize(local);
1017
Joe Perchesf64f9e72009-11-29 16:55:45 -08001018 if (skb_queue_len(&local->skb_queue) ||
1019 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001020 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001021 skb_queue_purge(&local->skb_queue);
1022 skb_queue_purge(&local->skb_queue_unreliable);
Christian Lamparter24a8fda2010-12-30 17:25:29 +01001023 skb_queue_purge(&local->rx_skb_queue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001024
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001025 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001026 wiphy_unregister(local->hw.wiphy);
1027 ieee80211_wep_free(local);
1028 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +02001029 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001030}
1031EXPORT_SYMBOL(ieee80211_unregister_hw);
1032
1033void ieee80211_free_hw(struct ieee80211_hw *hw)
1034{
1035 struct ieee80211_local *local = hw_to_local(hw);
1036
Johannes Bergc771c9d2009-01-23 22:54:03 +01001037 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +02001038 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +01001039
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001040 if (local->wiphy_ciphers_allocated)
1041 kfree(local->hw.wiphy->cipher_suites);
1042
Jiri Bencf0706e82007-05-05 11:45:53 -07001043 wiphy_free(local->hw.wiphy);
1044}
1045EXPORT_SYMBOL(ieee80211_free_hw);
1046
Jiri Bencf0706e82007-05-05 11:45:53 -07001047static int __init ieee80211_init(void)
1048{
1049 struct sk_buff *skb;
1050 int ret;
1051
Johannes Berge039fa42008-05-15 12:55:29 +02001052 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1053 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +02001054 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -07001055
Felix Fietkaucccf1292008-10-05 18:07:45 +02001056 ret = rc80211_minstrel_init();
1057 if (ret)
1058 return ret;
1059
Felix Fietkauec8aa662010-05-13 16:48:03 +02001060 ret = rc80211_minstrel_ht_init();
1061 if (ret)
1062 goto err_minstrel;
1063
Johannes Berg4b475892008-01-02 15:17:03 +01001064 ret = rc80211_pid_init();
Mattias Nisslerad018372007-12-19 01:25:57 +01001065 if (ret)
Johannes Berg47846c92009-11-25 17:46:19 +01001066 goto err_pid;
Jiri Bencf0706e82007-05-05 11:45:53 -07001067
Johannes Berg47846c92009-11-25 17:46:19 +01001068 ret = ieee80211_iface_init();
1069 if (ret)
1070 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -07001071
Jiri Bencf0706e82007-05-05 11:45:53 -07001072 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +01001073 err_netdev:
1074 rc80211_pid_exit();
1075 err_pid:
Felix Fietkauec8aa662010-05-13 16:48:03 +02001076 rc80211_minstrel_ht_exit();
1077 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +01001078 rc80211_minstrel_exit();
1079
1080 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -07001081}
1082
Jiri Bencf0706e82007-05-05 11:45:53 -07001083static void __exit ieee80211_exit(void)
1084{
Johannes Berg4b475892008-01-02 15:17:03 +01001085 rc80211_pid_exit();
Felix Fietkauec8aa662010-05-13 16:48:03 +02001086 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +02001087 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +01001088
Luis Carlos Cobof7a92142008-02-23 15:17:18 +01001089 if (mesh_allocated)
1090 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001091
Johannes Berg47846c92009-11-25 17:46:19 +01001092 ieee80211_iface_exit();
Johannes Bergd07c7cf2011-05-14 11:04:51 +02001093
1094 rcu_barrier();
Jiri Bencf0706e82007-05-05 11:45:53 -07001095}
1096
1097
Johannes Bergca9938f2007-09-11 12:50:32 +02001098subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -07001099module_exit(ieee80211_exit);
1100
1101MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1102MODULE_LICENSE("GPL");