blob: c26e231c733af85d66fba73821ee877ca4338912 [file] [log] [blame]
Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <net/mac80211.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070012#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/netdevice.h>
15#include <linux/types.h>
16#include <linux/slab.h>
17#include <linux/skbuff.h>
18#include <linux/etherdevice.h>
19#include <linux/if_arp.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070020#include <linux/rtnetlink.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070021#include <linux/bitmap.h>
Jean Pihete8db0be2011-08-25 15:35:03 +020022#include <linux/pm_qos.h>
Juuso Oikarinen68542962010-06-09 13:43:26 +030023#include <linux/inetdevice.h>
Eric W. Biederman881d9662007-09-17 11:56:21 -070024#include <net/net_namespace.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070025#include <net/cfg80211.h>
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
Ben Greear8a690672012-04-17 10:54:16 -070050 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
51 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
Michael Wu8cc9a732008-01-31 19:48:23 +010052 new_flags |= FIF_BCN_PRBRESP_PROMISC;
53
Johannes Berg7be50862010-10-13 12:06:24 +020054 if (local->fif_probe_req || local->probe_req_reg)
55 new_flags |= FIF_PROBE_REQ;
56
Michael Wu8cc9a732008-01-31 19:48:23 +010057 if (local->fif_fcsfail)
58 new_flags |= FIF_FCSFAIL;
59
60 if (local->fif_plcpfail)
61 new_flags |= FIF_PLCPFAIL;
62
63 if (local->fif_control)
64 new_flags |= FIF_CONTROL;
65
66 if (local->fif_other_bss)
67 new_flags |= FIF_OTHER_BSS;
Johannes Berg4150c572007-09-17 01:29:23 -040068
Igor Perminove3b90ca2009-08-04 16:48:51 +040069 if (local->fif_pspoll)
70 new_flags |= FIF_PSPOLL;
71
Johannes Berg3ac64be2009-08-17 16:16:53 +020072 spin_lock_bh(&local->filter_lock);
Johannes Berg4150c572007-09-17 01:29:23 -040073 changed_flags = local->filter_flags ^ new_flags;
74
Jiri Pirko22bedad32010-04-01 21:22:57 +000075 mc = drv_prepare_multicast(local, &local->mc_list);
Johannes Berg3ac64be2009-08-17 16:16:53 +020076 spin_unlock_bh(&local->filter_lock);
77
Johannes Berg4150c572007-09-17 01:29:23 -040078 /* be a bit nasty */
79 new_flags |= (1<<31);
80
Johannes Berg3ac64be2009-08-17 16:16:53 +020081 drv_configure_filter(local, changed_flags, &new_flags, mc);
Johannes Berg4150c572007-09-17 01:29:23 -040082
83 WARN_ON(new_flags & (1<<31));
84
85 local->filter_flags = new_flags & ~(1<<31);
86}
87
Johannes Berg3ac64be2009-08-17 16:16:53 +020088static void ieee80211_reconfig_filter(struct work_struct *work)
89{
90 struct ieee80211_local *local =
91 container_of(work, struct ieee80211_local, reconfig_filter);
92
93 ieee80211_configure_filter(local);
94}
95
Johannes Berge8975582008-10-09 12:18:51 +020096int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
Johannes Bergb2c258f2007-07-27 15:43:23 +020097{
Stanislaw Gruszka5e5202a2011-11-03 10:40:45 +010098 struct ieee80211_channel *chan;
Johannes Bergb2c258f2007-07-27 15:43:23 +020099 int ret = 0;
Johannes Berge8975582008-10-09 12:18:51 +0200100 int power;
Sujith094d05d2008-12-12 11:57:43 +0530101 enum nl80211_channel_type channel_type;
Felix Fietkauffd27782010-07-29 17:36:43 +0200102 u32 offchannel_flag;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200103
Johannes Bergcb121ba2008-10-14 16:38:55 +0200104 might_sleep();
105
Felix Fietkauffd27782010-07-29 17:36:43 +0200106 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Stanislaw Gruszka5e5202a2011-11-03 10:40:45 +0100107 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) {
Stanislaw Gruszka5e5202a2011-11-03 10:40:45 +0100117 chan = local->tmp_channel;
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100118 channel_type = local->tmp_channel_type;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200119 } else {
Johannes Bergb2c258f2007-07-27 15:43:23 +0200120 chan = local->oper_channel;
Johannes Berg0aaffa92010-05-05 15:28:27 +0200121 channel_type = local->_oper_channel_type;
Johannes Berge8975582008-10-09 12:18:51 +0200122 }
Ben Greearb23b0252011-02-04 11:54:17 -0800123
124 if (chan != local->oper_channel ||
125 channel_type != local->_oper_channel_type)
126 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
127 else
128 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
129
Felix Fietkauffd27782010-07-29 17:36:43 +0200130 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200131
Felix Fietkauffd27782010-07-29 17:36:43 +0200132 if (offchannel_flag || chan != local->hw.conf.channel ||
Johannes Berg47979382009-01-07 10:13:27 +0100133 channel_type != local->hw.conf.channel_type) {
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200134 local->hw.conf.channel = chan;
Johannes Berg47979382009-01-07 10:13:27 +0100135 local->hw.conf.channel_type = channel_type;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200136 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
137 }
Johannes Berg8318d782008-01-24 19:38:38 +0100138
Johannes Berg0f782312009-12-01 13:37:02 +0100139 if (!conf_is_ht(&local->hw.conf)) {
140 /*
141 * mac80211.h documents that this is only valid
142 * when the channel is set to an HT type, and
143 * that otherwise STATIC is used.
144 */
145 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
146 } else if (local->hw.conf.smps_mode != local->smps_mode) {
147 local->hw.conf.smps_mode = local->smps_mode;
148 changed |= IEEE80211_CONF_CHANGE_SMPS;
149 }
150
Dmitry TARNYAGINcd6c5242011-12-12 12:58:43 +0100151 if (test_bit(SCAN_SW_SCANNING, &local->scanning) ||
Ben Greear8a690672012-04-17 10:54:16 -0700152 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) ||
Dmitry TARNYAGINcd6c5242011-12-12 12:58:43 +0100153 test_bit(SCAN_HW_SCANNING, &local->scanning))
Johannes Berge8975582008-10-09 12:18:51 +0200154 power = chan->max_power;
Johannes Berg8318d782008-01-24 19:38:38 +0100155 else
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530156 power = local->power_constr_level ?
Hong Wua48b13a2012-01-11 20:34:30 +0200157 min(chan->max_power,
158 (chan->max_reg_power - local->power_constr_level)) :
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530159 chan->max_power;
160
Johannes Berg47afbaf2009-04-07 15:22:28 +0200161 if (local->user_power_level >= 0)
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530162 power = min(power, local->user_power_level);
163
Johannes Berge8975582008-10-09 12:18:51 +0200164 if (local->hw.conf.power_level != power) {
165 changed |= IEEE80211_CONF_CHANGE_POWER;
166 local->hw.conf.power_level = power;
167 }
Johannes Berg8318d782008-01-24 19:38:38 +0100168
Johannes Berge8975582008-10-09 12:18:51 +0200169 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200170 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200171 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800172 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200173 * HW reconfiguration should never fail, the driver has told
174 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800175 *
176 * Current status:
177 * rfkill is not integrated with mac80211 and a
178 * configuration command can thus fail if hardware rfkill
179 * is enabled
180 *
181 * FIXME: integrate rfkill with mac80211 and then add this
182 * WARN_ON() back
183 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200184 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800185 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200186 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200187
188 return ret;
189}
190
Johannes Berg471b3ef2007-12-28 14:32:58 +0100191void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
192 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200193{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100194 struct ieee80211_local *local = sdata->local;
Johannes Berg9cef8732009-05-14 13:10:14 +0200195 static const u8 zero[ETH_ALEN] = { 0 };
Johannes Berg471b3ef2007-12-28 14:32:58 +0100196
197 if (!changed)
198 return;
199
Johannes Berg9cef8732009-05-14 13:10:14 +0200200 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
Johannes Berg66e67e42012-01-20 13:55:27 +0100201 sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
Johannes Berg9cef8732009-05-14 13:10:14 +0200202 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200203 sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
204 else if (sdata->vif.type == NL80211_IFTYPE_AP)
Johannes Berg47846c92009-11-25 17:46:19 +0100205 sdata->vif.bss_conf.bssid = sdata->vif.addr;
Bill Jordan1be7fe82010-10-01 11:20:41 -0400206 else if (sdata->vif.type == NL80211_IFTYPE_WDS)
207 sdata->vif.bss_conf.bssid = NULL;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200208 else if (ieee80211_vif_is_mesh(&sdata->vif)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200209 sdata->vif.bss_conf.bssid = zero;
210 } else {
211 WARN_ON(1);
212 return;
213 }
214
215 switch (sdata->vif.type) {
216 case NL80211_IFTYPE_AP:
217 case NL80211_IFTYPE_ADHOC:
Bill Jordan1be7fe82010-10-01 11:20:41 -0400218 case NL80211_IFTYPE_WDS:
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200219 case NL80211_IFTYPE_MESH_POINT:
220 break;
221 default:
222 /* do not warn to simplify caller in scan.c */
223 changed &= ~BSS_CHANGED_BEACON_ENABLED;
224 if (WARN_ON(changed & BSS_CHANGED_BEACON))
225 return;
226 break;
227 }
228
229 if (changed & BSS_CHANGED_BEACON_ENABLED) {
Johannes Berg9607e6b2009-12-23 13:15:31 +0100230 if (local->quiescing || !ieee80211_sdata_running(sdata) ||
Ben Greearb23b0252011-02-04 11:54:17 -0800231 test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200232 sdata->vif.bss_conf.enable_beacon = false;
233 } else {
234 /*
235 * Beacon should be enabled, but AP mode must
236 * check whether there is a beacon configured.
237 */
238 switch (sdata->vif.type) {
239 case NL80211_IFTYPE_AP:
240 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200241 !!sdata->u.ap.beacon;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200242 break;
243 case NL80211_IFTYPE_ADHOC:
244 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200245 !!sdata->u.ibss.presp;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200246 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800247#ifdef CONFIG_MAC80211_MESH
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200248 case NL80211_IFTYPE_MESH_POINT:
Johannes Berg29cbe682010-12-03 09:20:44 +0100249 sdata->vif.bss_conf.enable_beacon =
250 !!sdata->u.mesh.mesh_id_len;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200251 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800252#endif
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200253 default:
254 /* not reached */
255 WARN_ON(1);
256 break;
257 }
258 }
259 }
260
Johannes Berg12375ef2009-11-25 20:30:31 +0100261 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200262}
263
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200264u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200265{
Johannes Bergbda39332008-10-11 01:51:51 +0200266 sdata->vif.bss_conf.use_cts_prot = false;
267 sdata->vif.bss_conf.use_short_preamble = false;
268 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200269 return BSS_CHANGED_ERP_CTS_PROT |
270 BSS_CHANGED_ERP_PREAMBLE |
271 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200272}
273
Jiri Bencf0706e82007-05-05 11:45:53 -0700274static void ieee80211_tasklet_handler(unsigned long data)
275{
276 struct ieee80211_local *local = (struct ieee80211_local *) data;
Johannes Berg37fbd902011-09-29 16:04:39 +0200277 struct sta_info *sta, *tmp;
278 struct skb_eosp_msg_data *eosp_data;
Jiri Bencf0706e82007-05-05 11:45:53 -0700279 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700280
281 while ((skb = skb_dequeue(&local->skb_queue)) ||
282 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
283 switch (skb->pkt_type) {
284 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100285 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700286 * netstack. */
287 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100288 ieee80211_rx(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700289 break;
290 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700291 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100292 ieee80211_tx_status(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700293 break;
Johannes Berg37fbd902011-09-29 16:04:39 +0200294 case IEEE80211_EOSP_MSG:
295 eosp_data = (void *)skb->cb;
296 for_each_sta_info(local, eosp_data->sta, sta, tmp) {
297 /* skip wrong virtual interface */
298 if (memcmp(eosp_data->iface,
299 sta->sdata->vif.addr, ETH_ALEN))
300 continue;
301 clear_sta_flag(sta, WLAN_STA_SP);
302 break;
303 }
304 dev_kfree_skb(skb);
305 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200306 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600307 WARN(1, "mac80211: Packet is of unknown type %d\n",
308 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700309 dev_kfree_skb(skb);
310 break;
311 }
312 }
313}
314
Johannes Bergf2753dd2009-04-14 10:09:24 +0200315static void ieee80211_restart_work(struct work_struct *work)
316{
317 struct ieee80211_local *local =
318 container_of(work, struct ieee80211_local, restart_work);
319
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200320 /* wait for scan work complete */
321 flush_workqueue(local->workqueue);
322
323 mutex_lock(&local->mtx);
Luciano Coelho79f460c2011-05-11 17:09:36 +0300324 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
Johannes Berg5260a5b2012-07-06 21:55:11 +0200325 rcu_dereference_protected(local->sched_scan_sdata,
326 lockdep_is_held(&local->mtx)),
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200327 "%s called with hardware scan in progress\n", __func__);
328 mutex_unlock(&local->mtx);
329
Johannes Bergf2753dd2009-04-14 10:09:24 +0200330 rtnl_lock();
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200331 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200332 ieee80211_reconfig(local);
333 rtnl_unlock();
334}
335
336void ieee80211_restart_hw(struct ieee80211_hw *hw)
337{
338 struct ieee80211_local *local = hw_to_local(hw);
339
Johannes Bergb5878a22010-04-07 16:48:40 +0200340 trace_api_restart_hw(local);
341
Michael Bueschb196d032011-03-07 13:09:12 +0100342 wiphy_info(hw->wiphy,
343 "Hardware restart was requested\n");
344
John W. Linville18145c62010-08-30 15:12:02 -0400345 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Bergf2753dd2009-04-14 10:09:24 +0200346 ieee80211_stop_queues_by_reason(hw,
347 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
348
Arik Nemtsov04800ad2012-06-06 11:25:02 +0300349 /*
350 * Stop all Rx during the reconfig. We don't want state changes
351 * or driver callbacks while this is in progress.
352 */
353 local->in_reconfig = true;
354 barrier();
355
Johannes Bergf2753dd2009-04-14 10:09:24 +0200356 schedule_work(&local->restart_work);
357}
358EXPORT_SYMBOL(ieee80211_restart_hw);
359
Johannes Berg0f782312009-12-01 13:37:02 +0100360static void ieee80211_recalc_smps_work(struct work_struct *work)
361{
362 struct ieee80211_local *local =
363 container_of(work, struct ieee80211_local, recalc_smps);
364
365 mutex_lock(&local->iflist_mtx);
Johannes Berg025e6be2010-10-05 10:41:47 +0200366 ieee80211_recalc_smps(local);
Johannes Berg0f782312009-12-01 13:37:02 +0100367 mutex_unlock(&local->iflist_mtx);
368}
369
John W. Linville26b36cf2010-06-04 14:25:44 -0400370#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300371static int ieee80211_ifa_changed(struct notifier_block *nb,
372 unsigned long data, void *arg)
373{
374 struct in_ifaddr *ifa = arg;
375 struct ieee80211_local *local =
376 container_of(nb, struct ieee80211_local,
377 ifa_notifier);
378 struct net_device *ndev = ifa->ifa_dev->dev;
379 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300380 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300381 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300382 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300383 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300384 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300385
386 /* Make sure it's our interface that got changed */
387 if (!wdev)
388 return NOTIFY_DONE;
389
390 if (wdev->wiphy != local->hw.wiphy)
391 return NOTIFY_DONE;
392
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300393 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300394 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300395
396 /* ARP filtering is only supported in managed mode */
397 if (sdata->vif.type != NL80211_IFTYPE_STATION)
398 return NOTIFY_DONE;
399
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000400 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300401 if (!idev)
402 return NOTIFY_DONE;
403
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300404 ifmgd = &sdata->u.mgd;
405 mutex_lock(&ifmgd->mtx);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300406
407 /* Copy the addresses to the bss_conf list */
408 ifa = idev->ifa_list;
409 while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
410 bss_conf->arp_addr_list[c] = ifa->ifa_address;
411 ifa = ifa->ifa_next;
412 c++;
413 }
414
415 /* If not all addresses fit the list, disable filtering */
416 if (ifa) {
417 sdata->arp_filter_state = false;
418 c = 0;
419 } else {
420 sdata->arp_filter_state = true;
421 }
422 bss_conf->arp_addr_cnt = c;
423
Eliad Peller53d69c32011-12-12 15:30:04 +0200424 /* Configure driver only if associated (which also implies it is up) */
Juuso Oikarinen68542962010-06-09 13:43:26 +0300425 if (ifmgd->associated) {
426 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
427 ieee80211_bss_info_change_notify(sdata,
428 BSS_CHANGED_ARP_FILTER);
429 }
430
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300431 mutex_unlock(&ifmgd->mtx);
432
433 return NOTIFY_DONE;
434}
John W. Linville26b36cf2010-06-04 14:25:44 -0400435#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300436
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400437static int ieee80211_napi_poll(struct napi_struct *napi, int budget)
438{
439 struct ieee80211_local *local =
440 container_of(napi, struct ieee80211_local, napi);
441
442 return local->ops->napi_poll(&local->hw, budget);
443}
444
445void ieee80211_napi_schedule(struct ieee80211_hw *hw)
446{
447 struct ieee80211_local *local = hw_to_local(hw);
448
449 napi_schedule(&local->napi);
450}
451EXPORT_SYMBOL(ieee80211_napi_schedule);
452
453void ieee80211_napi_complete(struct ieee80211_hw *hw)
454{
455 struct ieee80211_local *local = hw_to_local(hw);
456
457 napi_complete(&local->napi);
458}
459EXPORT_SYMBOL(ieee80211_napi_complete);
460
Johannes Berg2e161f72010-08-12 15:38:38 +0200461/* There isn't a lot of sense in it, but you can transmit anything you like */
462static const struct ieee80211_txrx_stypes
463ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
464 [NL80211_IFTYPE_ADHOC] = {
465 .tx = 0xffff,
Will Hawkins3bfda622012-06-19 17:59:14 -0400466 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
467 BIT(IEEE80211_STYPE_AUTH >> 4) |
468 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Johannes Berg2e161f72010-08-12 15:38:38 +0200469 },
470 [NL80211_IFTYPE_STATION] = {
471 .tx = 0xffff,
472 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
473 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
474 },
475 [NL80211_IFTYPE_AP] = {
476 .tx = 0xffff,
477 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
478 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
479 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
480 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
481 BIT(IEEE80211_STYPE_AUTH >> 4) |
482 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
483 BIT(IEEE80211_STYPE_ACTION >> 4),
484 },
485 [NL80211_IFTYPE_AP_VLAN] = {
486 /* copy AP */
487 .tx = 0xffff,
488 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
489 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
490 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
491 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
492 BIT(IEEE80211_STYPE_AUTH >> 4) |
493 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
494 BIT(IEEE80211_STYPE_ACTION >> 4),
495 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200496 [NL80211_IFTYPE_P2P_CLIENT] = {
497 .tx = 0xffff,
498 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
499 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
500 },
501 [NL80211_IFTYPE_P2P_GO] = {
502 .tx = 0xffff,
503 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
504 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
505 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
506 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
507 BIT(IEEE80211_STYPE_AUTH >> 4) |
508 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
509 BIT(IEEE80211_STYPE_ACTION >> 4),
510 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800511 [NL80211_IFTYPE_MESH_POINT] = {
512 .tx = 0xffff,
Javier Cardona71839122011-04-07 15:08:31 -0700513 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
514 BIT(IEEE80211_STYPE_AUTH >> 4) |
515 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Javier Cardonac7108a72010-12-16 17:37:50 -0800516 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200517};
518
Ben Greearef96a8422011-11-18 11:32:00 -0800519static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
520 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
521 IEEE80211_HT_AMPDU_PARM_DENSITY,
522
523 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
524 IEEE80211_HT_CAP_MAX_AMSDU |
525 IEEE80211_HT_CAP_SGI_40),
526 .mcs = {
527 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
528 0xff, 0xff, 0xff, 0xff, 0xff, },
529 },
530};
531
Jiri Bencf0706e82007-05-05 11:45:53 -0700532struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
533 const struct ieee80211_ops *ops)
534{
Jiri Bencf0706e82007-05-05 11:45:53 -0700535 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100536 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700537 struct wiphy *wiphy;
538
Johannes Bergf09603a2012-01-20 13:55:21 +0100539 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
540 return NULL;
541
Jiri Bencf0706e82007-05-05 11:45:53 -0700542 /* Ensure 32-byte alignment of our private data and hw private data.
543 * We use the wiphy priv data for both our ieee80211_local and for
544 * the driver's private data
545 *
546 * In memory it'll be like this:
547 *
548 * +-------------------------+
549 * | struct wiphy |
550 * +-------------------------+
551 * | struct ieee80211_local |
552 * +-------------------------+
553 * | driver's private data |
554 * +-------------------------+
555 *
556 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000557 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700558
559 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
560
561 if (!wiphy)
562 return NULL;
563
Johannes Berg2e161f72010-08-12 15:38:38 +0200564 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
565
Johannes Berg207aba62010-12-10 17:10:44 +0100566 wiphy->privid = mac80211_wiphy_privid;
567
Johannes Berg9bc383d2009-11-19 11:55:19 +0100568 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
569 WIPHY_FLAG_4ADDR_AP |
Johannes Bergee971922011-11-04 11:18:18 +0100570 WIPHY_FLAG_4ADDR_STATION |
Johannes Berg7c4ef712011-11-18 15:33:48 +0100571 WIPHY_FLAG_REPORTS_OBSS |
Johannes Berg81ddbb52012-03-26 18:47:18 +0200572 WIPHY_FLAG_OFFCHAN_TX;
573
574 if (ops->remain_on_channel)
575 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
Johannes Berg207aba62010-12-10 17:10:44 +0100576
Alexander Simon13c40c52011-11-30 16:56:34 +0100577 wiphy->features = NL80211_FEATURE_SK_TX_STATUS |
578 NL80211_FEATURE_HT_IBSS;
Johannes Berga729cff2011-11-06 14:13:34 +0100579
Johannes Berg207aba62010-12-10 17:10:44 +0100580 if (!ops->set_key)
581 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200582
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100583 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700584
585 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200586
Jiri Bencf0706e82007-05-05 11:45:53 -0700587 local->hw.wiphy = wiphy;
588
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000589 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700590
Johannes Bergcb831b52012-07-02 15:40:18 +0200591 BUG_ON(!ops->tx);
Johannes Berg4150c572007-09-17 01:29:23 -0400592 BUG_ON(!ops->start);
593 BUG_ON(!ops->stop);
Johannes Berg4480f15c2007-07-10 19:32:10 +0200594 BUG_ON(!ops->config);
595 BUG_ON(!ops->add_interface);
Johannes Berg4150c572007-09-17 01:29:23 -0400596 BUG_ON(!ops->remove_interface);
597 BUG_ON(!ops->configure_filter);
Jiri Bencf0706e82007-05-05 11:45:53 -0700598 local->ops = ops;
599
Johannes Berge6a98542008-10-21 12:40:02 +0200600 /* set up some defaults */
601 local->hw.queues = 1;
602 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200603 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200604 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Helmut Schaa39e68712011-08-05 11:46:19 +0200605 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200606 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200607 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
608 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergac55d2f2012-05-10 09:09:10 +0200609 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
610 IEEE80211_RADIOTAP_MCS_HAVE_GI |
611 IEEE80211_RADIOTAP_MCS_HAVE_BW;
Johannes Bergc428c892009-04-29 00:28:18 +0200612 local->user_power_level = -1;
Ben Greearef96a8422011-11-18 11:32:00 -0800613 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
Jiri Bencf0706e82007-05-05 11:45:53 -0700614
Johannes Berg79010422007-09-18 17:29:21 -0400615 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000616
617 __hw_addr_init(&local->mc_list);
618
Johannes Bergc771c9d2009-01-23 22:54:03 +0100619 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200620 mutex_init(&local->mtx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700621
Johannes Bergad0e2b52010-06-01 10:19:19 +0200622 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200623 spin_lock_init(&local->filter_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200624 spin_lock_init(&local->queue_stop_reason_lock);
625
Johannes Berg681c4d02011-01-12 13:40:33 +0100626 /*
627 * The rx_skb_queue is only accessed from tasklets,
628 * but other SKB queues are used from within IRQ
629 * context. Therefore, this one needs a different
630 * locking class so our direct, non-irq-safe use of
631 * the queue's lock doesn't throw lockdep warnings.
632 */
633 skb_queue_head_init_class(&local->rx_skb_queue,
634 &ieee80211_rx_skb_queue_class);
Christian Lamparter24a8fda2010-12-30 17:25:29 +0100635
Johannes Bergc2b13452008-09-11 00:01:55 +0200636 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700637
Johannes Bergf2753dd2009-04-14 10:09:24 +0200638 INIT_WORK(&local->restart_work, ieee80211_restart_work);
639
Johannes Berg3ac64be2009-08-17 16:16:53 +0200640 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100641 INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
642 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200643
Kalle Valo520eb822008-12-18 23:35:27 +0200644 INIT_WORK(&local->dynamic_ps_enable_work,
645 ieee80211_dynamic_ps_enable_work);
646 INIT_WORK(&local->dynamic_ps_disable_work,
647 ieee80211_dynamic_ps_disable_work);
648 setup_timer(&local->dynamic_ps_timer,
649 ieee80211_dynamic_ps_timer, (unsigned long) local);
650
Luciano Coelho85a99942011-05-12 16:28:29 +0300651 INIT_WORK(&local->sched_scan_stopped_work,
652 ieee80211_sched_scan_stopped_work);
653
Johannes Berga729cff2011-11-06 14:13:34 +0100654 spin_lock_init(&local->ack_status_lock);
655 idr_init(&local->ack_status_frames);
656 /* preallocate at least one entry */
657 idr_pre_get(&local->ack_status_frames, GFP_KERNEL);
658
Jiri Bencf0706e82007-05-05 11:45:53 -0700659 sta_info_init(local);
660
Johannes Berga6a67db2010-06-10 10:21:41 +0200661 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100662 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200663 atomic_set(&local->agg_queue_stop[i], 0);
664 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700665 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
666 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700667
668 tasklet_init(&local->tasklet,
669 ieee80211_tasklet_handler,
670 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700671
672 skb_queue_head_init(&local->skb_queue);
673 skb_queue_head_init(&local->skb_queue_unreliable);
674
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400675 /* init dummy netdev for use w/ NAPI */
676 init_dummy_netdev(&local->napi_dev);
677
Johannes Bergfe67c912010-11-27 20:02:59 +0100678 ieee80211_led_names(local);
679
Johannes Berg2eb278e2012-06-05 14:28:42 +0200680 ieee80211_roc_setup(local);
Johannes Berg21f83582010-12-18 17:20:47 +0100681
Johannes Berg005e4722012-02-26 11:24:35 +0100682 return &local->hw;
Jiri Bencf0706e82007-05-05 11:45:53 -0700683}
684EXPORT_SYMBOL(ieee80211_alloc_hw);
685
686int ieee80211_register_hw(struct ieee80211_hw *hw)
687{
688 struct ieee80211_local *local = hw_to_local(hw);
Johannes Berg7527a782011-05-13 10:58:57 +0200689 int result, i;
Johannes Berg8318d782008-01-24 19:38:38 +0100690 enum ieee80211_band band;
Johannes Bergbe4a4b62010-05-03 08:49:48 +0200691 int channels, max_bitrates;
Mahesh Palivelaba0afa22012-07-02 11:25:12 +0000692 bool supp_ht, supp_vht;
Arik Nemtsov72d78722012-05-10 16:18:26 +0300693 netdev_features_t feature_whitelist;
Johannes Berg25e47c182009-04-02 20:14:06 +0200694 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200695 /* keep WEP first, it may be removed below */
Johannes Berg25e47c182009-04-02 20:14:06 +0200696 WLAN_CIPHER_SUITE_WEP40,
697 WLAN_CIPHER_SUITE_WEP104,
698 WLAN_CIPHER_SUITE_TKIP,
699 WLAN_CIPHER_SUITE_CCMP,
700
701 /* keep last -- depends on hw flags! */
702 WLAN_CIPHER_SUITE_AES_CMAC
703 };
Johannes Berg8318d782008-01-24 19:38:38 +0100704
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200705 if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
706 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
707 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
708 return -EINVAL;
709
Larry Finger38bb3e92011-05-05 18:48:47 -0500710#ifdef CONFIG_PM
Johannes Bergdfb89c52012-06-27 09:23:48 +0200711 if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) &&
712 (!local->ops->suspend || !local->ops->resume))
Johannes Bergeecc4802011-05-04 15:37:29 +0200713 return -EINVAL;
Johannes Bergdfb89c52012-06-27 09:23:48 +0200714#endif
Johannes Bergeecc4802011-05-04 15:37:29 +0200715
Eliad Peller885bd8e2012-02-02 17:44:55 +0200716 if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan)
717 return -EINVAL;
718
Arik Nemtsov72d78722012-05-10 16:18:26 +0300719 /* Only HW csum features are currently compatible with mac80211 */
720 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
721 NETIF_F_HW_CSUM;
722 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
723 return -EINVAL;
724
Helmut Schaa78be49e2010-10-02 11:31:55 +0200725 if (hw->max_report_rates == 0)
726 hw->max_report_rates = hw->max_rates;
727
Johannes Berg8318d782008-01-24 19:38:38 +0100728 /*
729 * generic code guarantees at least one band,
730 * set this very early because much code assumes
731 * that hw.conf.channel is assigned
732 */
Johannes Berg2a519312009-02-10 21:25:55 +0100733 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200734 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200735 supp_ht = false;
Mahesh Palivelaba0afa22012-07-02 11:25:12 +0000736 supp_vht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100737 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
738 struct ieee80211_supported_band *sband;
739
740 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200741 if (!sband)
742 continue;
743 if (!local->oper_channel) {
Johannes Berg8318d782008-01-24 19:38:38 +0100744 /* init channel we're on */
745 local->hw.conf.channel =
Johannes Berg58905ca2009-05-07 14:23:01 +0200746 local->oper_channel = &sband->channels[0];
747 local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
Johannes Berg8318d782008-01-24 19:38:38 +0100748 }
Johannes Bergde95a542009-04-01 11:58:36 +0200749 channels += sband->n_channels;
750
751 if (max_bitrates < sband->n_bitrates)
752 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200753 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Mahesh Palivelaba0afa22012-07-02 11:25:12 +0000754 supp_vht = supp_vht || sband->vht_cap.vht_supported;
Johannes Berg8318d782008-01-24 19:38:38 +0100755 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700756
Johannes Berg5ba63532009-08-07 17:54:07 +0200757 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
758 sizeof(void *) * channels, GFP_KERNEL);
759 if (!local->int_scan_req)
Johannes Berg2a519312009-02-10 21:25:55 +0100760 return -ENOMEM;
761
Simon Wunderlichc72e8d32011-11-30 16:56:30 +0100762 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
763 if (!local->hw.wiphy->bands[band])
764 continue;
765 local->int_scan_req->rates[band] = (u32) -1;
766 }
767
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700768 /* if low-level driver supports AP, we also support VLAN */
Johannes Berg7527a782011-05-13 10:58:57 +0200769 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
770 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
771 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
772 }
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700773
774 /* mac80211 always supports monitor */
Johannes Berg7527a782011-05-13 10:58:57 +0200775 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
776 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
777
Johannes Berg8e621fc2011-05-14 01:55:23 +0200778 /*
779 * mac80211 doesn't support more than 1 channel, and also not more
780 * than one IBSS interface
781 */
782 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
783 const struct ieee80211_iface_combination *c;
784 int j;
785
786 c = &hw->wiphy->iface_combinations[i];
787
788 if (c->num_different_channels > 1)
Johannes Berg7527a782011-05-13 10:58:57 +0200789 return -EINVAL;
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700790
Johannes Berg8e621fc2011-05-14 01:55:23 +0200791 for (j = 0; j < c->n_limits; j++)
792 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
793 c->limits[j].max > 1)
794 return -EINVAL;
795 }
796
Johannes Berg5eb5a522010-08-25 14:34:01 +0200797#ifndef CONFIG_MAC80211_MESH
798 /* mesh depends on Kconfig, but drivers should set it if they want */
799 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
800#endif
801
Javier Cardona1570ca52011-04-07 15:08:35 -0700802 /* if the underlying driver supports mesh, mac80211 will (at least)
803 * provide routing of mesh authentication frames to userspace */
804 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
805 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
806
Johannes Berga621fa42010-08-27 14:26:54 +0300807 /* mac80211 supports control port protocol changing */
808 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
809
Johannes Berg77965c92009-02-18 18:45:06 +0100810 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
811 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
812 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
813 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
814
Kalle Valoab133152010-01-12 10:42:31 +0200815 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
816 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
817 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
818
Johannes Bergde95a542009-04-01 11:58:36 +0200819 /*
820 * Calculate scan IE length -- we need this to alloc
821 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300822 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200823 * information -- SSID is the driver's responsibility.
824 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300825 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
826 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200827 if (supp_ht)
828 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200829
Mahesh Palivelaba0afa22012-07-02 11:25:12 +0000830 if (supp_vht)
831 local->scan_ies_len +=
832 2 + sizeof(struct ieee80211_vht_capabilities);
833
Johannes Bergde95a542009-04-01 11:58:36 +0200834 if (!local->ops->hw_scan) {
835 /* For hw_scan, driver needs to set these up. */
836 local->hw.wiphy->max_scan_ssids = 4;
837 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
838 }
839
840 /*
841 * If the driver supports any scan IEs, then assume the
842 * limit includes the IEs mac80211 will add, otherwise
843 * leave it at zero and let the driver sort it out; we
844 * still pass our IEs to the driver but userspace will
845 * not be allowed to in that case.
846 */
847 if (local->hw.wiphy->max_scan_ie_len)
848 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
849
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300850 /* Set up cipher suites unless driver already did */
851 if (!local->hw.wiphy->cipher_suites) {
852 local->hw.wiphy->cipher_suites = cipher_suites;
853 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
854 if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
855 local->hw.wiphy->n_cipher_suites--;
856 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200857 if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300858 if (local->hw.wiphy->cipher_suites == cipher_suites) {
859 local->hw.wiphy->cipher_suites += 2;
860 local->hw.wiphy->n_cipher_suites -= 2;
861 } else {
862 u32 *suites;
863 int r, w = 0;
864
865 /* Filter out WEP */
866
867 suites = kmemdup(
868 local->hw.wiphy->cipher_suites,
869 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
870 GFP_KERNEL);
871 if (!suites)
872 return -ENOMEM;
873 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
874 u32 suite = local->hw.wiphy->cipher_suites[r];
875 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
876 suite == WLAN_CIPHER_SUITE_WEP104)
877 continue;
878 suites[w++] = suite;
879 }
880 local->hw.wiphy->cipher_suites = suites;
881 local->hw.wiphy->n_cipher_suites = w;
882 local->wiphy_ciphers_allocated = true;
883 }
Johannes Berg5daa8a82010-08-10 09:46:41 +0200884 }
Johannes Berg25e47c182009-04-02 20:14:06 +0200885
Johannes Berg21f83582010-12-18 17:20:47 +0100886 if (!local->ops->remain_on_channel)
887 local->hw.wiphy->max_remain_on_channel_duration = 5000;
Johannes Berga2939112010-12-14 17:54:28 +0100888
Luciano Coelho79f460c2011-05-11 17:09:36 +0300889 if (local->ops->sched_scan_start)
890 local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
891
Arik Nemtsovdfe018b2011-09-28 14:12:52 +0300892 /* mac80211 based drivers don't support internal TDLS setup */
893 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
894 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
895
Jiri Bencf0706e82007-05-05 11:45:53 -0700896 result = wiphy_register(local->hw.wiphy);
897 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +0100898 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -0700899
Johannes Berge2530082008-05-17 00:57:14 +0200900 /*
901 * We use the number of queues for feature tests (QoS, HT) internally
902 * so restrict them appropriately.
903 */
Johannes Berge2530082008-05-17 00:57:14 +0200904 if (hw->queues > IEEE80211_MAX_QUEUES)
905 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +0200906
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400907 local->workqueue =
Tejun Heo99b88a02010-10-15 17:35:28 +0200908 alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400909 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -0700910 result = -ENOMEM;
911 goto fail_workqueue;
912 }
913
Johannes Bergb306f452007-07-10 19:32:08 +0200914 /*
915 * The hardware needs headroom for sending the frame,
916 * and we need some headroom for passing the frame to monitor
917 * interfaces, but never both at the same time.
918 */
Jiri Benc33ccad32007-07-18 17:10:44 +0200919 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200920 IEEE80211_TX_STATUS_HEADROOM);
Johannes Bergb306f452007-07-10 19:32:08 +0200921
Jiri Bence9f207f2007-05-05 11:46:38 -0700922 debugfs_hw_add(local);
923
Helmut Schaab4469182010-02-24 14:19:37 +0100924 /*
925 * if the driver doesn't specify a max listen interval we
926 * use 5 which should be a safe default
927 */
Tomas Winklerea95bba2008-07-18 13:53:00 +0800928 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +0100929 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +0800930
931 local->hw.conf.listen_interval = local->hw.max_listen_interval;
932
Juuso Oikarinenff616382010-06-09 09:51:52 +0300933 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +0300934
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100935 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -0400936 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700937 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
938 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100939
Mohammed Shafi Shajakhanb57e6b52012-02-09 19:59:43 +0530940 ieee80211_led_init(local);
941
Jiri Bencf0706e82007-05-05 11:45:53 -0700942 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -0700943
Johannes Berg830f9032007-10-28 14:51:05 +0100944 result = ieee80211_init_rate_ctrl_alg(local,
945 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -0700946 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700947 wiphy_debug(local->hw.wiphy,
948 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -0700949 goto fail_rate;
950 }
951
Johannes Berg8dffff22008-12-09 00:10:30 +0100952 /* add one default STA interface if supported */
953 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
954 result = ieee80211_if_add(local, "wlan%d", NULL,
955 NL80211_IFTYPE_STATION, NULL);
956 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700957 wiphy_warn(local->hw.wiphy,
958 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +0100959 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700960
Jiri Bencf0706e82007-05-05 11:45:53 -0700961 rtnl_unlock();
962
Johannes Berg10f644a2009-04-16 13:17:25 +0200963 local->network_latency_notifier.notifier_call =
964 ieee80211_max_network_latency;
965 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
966 &local->network_latency_notifier);
Johannes Berg10f644a2009-04-16 13:17:25 +0200967 if (result) {
968 rtnl_lock();
969 goto fail_pm_qos;
970 }
971
John W. Linville26b36cf2010-06-04 14:25:44 -0400972#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300973 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
974 result = register_inetaddr_notifier(&local->ifa_notifier);
975 if (result)
976 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -0400977#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300978
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400979 netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll,
980 local->hw.napi_weight);
981
Jiri Bencf0706e82007-05-05 11:45:53 -0700982 return 0;
983
Juuso Oikarinen93c08c32010-08-03 08:22:25 +0300984#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300985 fail_ifa:
986 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
987 &local->network_latency_notifier);
988 rtnl_lock();
Juuso Oikarinen93c08c32010-08-03 08:22:25 +0300989#endif
Johannes Berg10f644a2009-04-16 13:17:25 +0200990 fail_pm_qos:
991 ieee80211_led_exit(local);
992 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +0200993 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -0700994 rtnl_unlock();
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100995 ieee80211_wep_free(local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700996 sta_info_stop(local);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400997 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +0200998 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -0700999 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +02001000 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001001 if (local->wiphy_ciphers_allocated)
1002 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +02001003 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001004 return result;
1005}
1006EXPORT_SYMBOL(ieee80211_register_hw);
1007
Jiri Bencf0706e82007-05-05 11:45:53 -07001008void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1009{
1010 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001011
1012 tasklet_kill(&local->tx_pending_tasklet);
1013 tasklet_kill(&local->tasklet);
1014
Johannes Berg10f644a2009-04-16 13:17:25 +02001015 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1016 &local->network_latency_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001017#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001018 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001019#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001020
Jiri Bencf0706e82007-05-05 11:45:53 -07001021 rtnl_lock();
1022
Johannes Berg79010422007-09-18 17:29:21 -04001023 /*
1024 * At this point, interface list manipulations are fine
1025 * because the driver cannot be handing us frames any
1026 * more and the tasklet is killed.
1027 */
Johannes Berg75636522008-07-09 14:40:35 +02001028 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +02001029
Jiri Bencf0706e82007-05-05 11:45:53 -07001030 rtnl_unlock();
1031
Christian Lamparter258086a2010-08-22 23:48:25 +02001032 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001033 cancel_work_sync(&local->reconfig_filter);
1034
Jiri Bencf0706e82007-05-05 11:45:53 -07001035 ieee80211_clear_tx_pending(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001036 rate_control_deinitialize(local);
1037
Joe Perchesf64f9e72009-11-29 16:55:45 -08001038 if (skb_queue_len(&local->skb_queue) ||
1039 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001040 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001041 skb_queue_purge(&local->skb_queue);
1042 skb_queue_purge(&local->skb_queue_unreliable);
Christian Lamparter24a8fda2010-12-30 17:25:29 +01001043 skb_queue_purge(&local->rx_skb_queue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001044
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001045 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001046 wiphy_unregister(local->hw.wiphy);
Stanislaw Gruszkaecb44332011-08-12 14:00:59 +02001047 sta_info_stop(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001048 ieee80211_wep_free(local);
1049 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +02001050 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001051}
1052EXPORT_SYMBOL(ieee80211_unregister_hw);
1053
Johannes Berga729cff2011-11-06 14:13:34 +01001054static int ieee80211_free_ack_frame(int id, void *p, void *data)
1055{
1056 WARN_ONCE(1, "Have pending ack frames!\n");
1057 kfree_skb(p);
1058 return 0;
1059}
1060
Jiri Bencf0706e82007-05-05 11:45:53 -07001061void ieee80211_free_hw(struct ieee80211_hw *hw)
1062{
1063 struct ieee80211_local *local = hw_to_local(hw);
1064
Johannes Bergc771c9d2009-01-23 22:54:03 +01001065 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +02001066 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +01001067
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001068 if (local->wiphy_ciphers_allocated)
1069 kfree(local->hw.wiphy->cipher_suites);
1070
Johannes Berga729cff2011-11-06 14:13:34 +01001071 idr_for_each(&local->ack_status_frames,
1072 ieee80211_free_ack_frame, NULL);
1073 idr_destroy(&local->ack_status_frames);
1074
Jiri Bencf0706e82007-05-05 11:45:53 -07001075 wiphy_free(local->hw.wiphy);
1076}
1077EXPORT_SYMBOL(ieee80211_free_hw);
1078
Jiri Bencf0706e82007-05-05 11:45:53 -07001079static int __init ieee80211_init(void)
1080{
1081 struct sk_buff *skb;
1082 int ret;
1083
Johannes Berge039fa42008-05-15 12:55:29 +02001084 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1085 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +02001086 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -07001087
Felix Fietkaucccf1292008-10-05 18:07:45 +02001088 ret = rc80211_minstrel_init();
1089 if (ret)
1090 return ret;
1091
Felix Fietkauec8aa662010-05-13 16:48:03 +02001092 ret = rc80211_minstrel_ht_init();
1093 if (ret)
1094 goto err_minstrel;
1095
Johannes Berg4b475892008-01-02 15:17:03 +01001096 ret = rc80211_pid_init();
Mattias Nisslerad018372007-12-19 01:25:57 +01001097 if (ret)
Johannes Berg47846c92009-11-25 17:46:19 +01001098 goto err_pid;
Jiri Bencf0706e82007-05-05 11:45:53 -07001099
Johannes Berg47846c92009-11-25 17:46:19 +01001100 ret = ieee80211_iface_init();
1101 if (ret)
1102 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -07001103
Jiri Bencf0706e82007-05-05 11:45:53 -07001104 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +01001105 err_netdev:
1106 rc80211_pid_exit();
1107 err_pid:
Felix Fietkauec8aa662010-05-13 16:48:03 +02001108 rc80211_minstrel_ht_exit();
1109 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +01001110 rc80211_minstrel_exit();
1111
1112 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -07001113}
1114
Jiri Bencf0706e82007-05-05 11:45:53 -07001115static void __exit ieee80211_exit(void)
1116{
Johannes Berg4b475892008-01-02 15:17:03 +01001117 rc80211_pid_exit();
Felix Fietkauec8aa662010-05-13 16:48:03 +02001118 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +02001119 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +01001120
Luis Carlos Cobof7a92142008-02-23 15:17:18 +01001121 if (mesh_allocated)
1122 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001123
Johannes Berg47846c92009-11-25 17:46:19 +01001124 ieee80211_iface_exit();
Johannes Bergd07c7cf2011-05-14 11:04:51 +02001125
1126 rcu_barrier();
Jiri Bencf0706e82007-05-05 11:45:53 -07001127}
1128
1129
Johannes Bergca9938f2007-09-11 12:50:32 +02001130subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -07001131module_exit(ieee80211_exit);
1132
1133MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1134MODULE_LICENSE("GPL");