blob: 018e3fbc2c259110abf2a48cd3e334b28f7cea60 [file] [log] [blame]
Jiri Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 11:45:53 -070020#include <linux/rtnetlink.h>
Jiri Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 11:45:53 -070025#include <net/cfg80211.h>
26
Jiri Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 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
Dmitry TARNYAGINcd6c5242011-12-12 12:58:43 +010050 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning))
Michael Wu8cc9a732008-01-31 19:48:23 +010051 new_flags |= FIF_BCN_PRBRESP_PROMISC;
52
Johannes Berg7be50862010-10-13 12:06:24 +020053 if (local->fif_probe_req || local->probe_req_reg)
54 new_flags |= FIF_PROBE_REQ;
55
Michael Wu8cc9a732008-01-31 19:48:23 +010056 if (local->fif_fcsfail)
57 new_flags |= FIF_FCSFAIL;
58
59 if (local->fif_plcpfail)
60 new_flags |= FIF_PLCPFAIL;
61
62 if (local->fif_control)
63 new_flags |= FIF_CONTROL;
64
65 if (local->fif_other_bss)
66 new_flags |= FIF_OTHER_BSS;
Johannes Berg4150c572007-09-17 01:29:23 -040067
Igor Perminove3b90ca2009-08-04 16:48:51 +040068 if (local->fif_pspoll)
69 new_flags |= FIF_PSPOLL;
70
Johannes Berg3ac64be2009-08-17 16:16:53 +020071 spin_lock_bh(&local->filter_lock);
Johannes Berg4150c572007-09-17 01:29:23 -040072 changed_flags = local->filter_flags ^ new_flags;
73
Jiri Pirko22bedad2010-04-01 21:22:57 +000074 mc = drv_prepare_multicast(local, &local->mc_list);
Johannes Berg3ac64be2009-08-17 16:16:53 +020075 spin_unlock_bh(&local->filter_lock);
76
Johannes Berg4150c572007-09-17 01:29:23 -040077 /* be a bit nasty */
78 new_flags |= (1<<31);
79
Johannes Berg3ac64be2009-08-17 16:16:53 +020080 drv_configure_filter(local, changed_flags, &new_flags, mc);
Johannes Berg4150c572007-09-17 01:29:23 -040081
82 WARN_ON(new_flags & (1<<31));
83
84 local->filter_flags = new_flags & ~(1<<31);
85}
86
Johannes Berg3ac64be2009-08-17 16:16:53 +020087static void ieee80211_reconfig_filter(struct work_struct *work)
88{
89 struct ieee80211_local *local =
90 container_of(work, struct ieee80211_local, reconfig_filter);
91
92 ieee80211_configure_filter(local);
93}
94
Johannes Berge8975582008-10-09 12:18:51 +020095int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
Johannes Bergb2c258f2007-07-27 15:43:23 +020096{
Stanislaw Gruszka5e5202a2011-11-03 10:40:45 +010097 struct ieee80211_channel *chan;
Johannes Bergb2c258f2007-07-27 15:43:23 +020098 int ret = 0;
Johannes Berge8975582008-10-09 12:18:51 +020099 int power;
Sujith094d05d2008-12-12 11:57:43 +0530100 enum nl80211_channel_type channel_type;
Felix Fietkauffd27782010-07-29 17:36:43 +0200101 u32 offchannel_flag;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200102
Johannes Bergcb121ba2008-10-14 16:38:55 +0200103 might_sleep();
104
Felix Fietkauffd27782010-07-29 17:36:43 +0200105 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Stanislaw Gruszka5e5202a2011-11-03 10:40:45 +0100106 if (local->scan_channel) {
107 chan = local->scan_channel;
Ben Greear4f2e9d92011-02-07 13:44:35 -0800108 /* If scanning on oper channel, use whatever channel-type
109 * is currently in use.
110 */
111 if (chan == local->oper_channel)
112 channel_type = local->_oper_channel_type;
113 else
114 channel_type = NL80211_CHAN_NO_HT;
Ben Greearb23b0252011-02-04 11:54:17 -0800115 } else if (local->tmp_channel) {
Stanislaw Gruszka5e5202a2011-11-03 10:40:45 +0100116 chan = local->tmp_channel;
Johannes Bergb8bc4b02009-12-23 13:15:42 +0100117 channel_type = local->tmp_channel_type;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200118 } else {
Johannes Bergb2c258f2007-07-27 15:43:23 +0200119 chan = local->oper_channel;
Johannes Berg0aaffa92010-05-05 15:28:27 +0200120 channel_type = local->_oper_channel_type;
Johannes Berge8975582008-10-09 12:18:51 +0200121 }
Ben Greearb23b0252011-02-04 11:54:17 -0800122
123 if (chan != local->oper_channel ||
124 channel_type != local->_oper_channel_type)
125 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
126 else
127 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
128
Felix Fietkauffd27782010-07-29 17:36:43 +0200129 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200130
Felix Fietkauffd27782010-07-29 17:36:43 +0200131 if (offchannel_flag || chan != local->hw.conf.channel ||
Johannes Berg47979382009-01-07 10:13:27 +0100132 channel_type != local->hw.conf.channel_type) {
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200133 local->hw.conf.channel = chan;
Johannes Berg47979382009-01-07 10:13:27 +0100134 local->hw.conf.channel_type = channel_type;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200135 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
136 }
Johannes Berg8318d782008-01-24 19:38:38 +0100137
Johannes Berg0f782312009-12-01 13:37:02 +0100138 if (!conf_is_ht(&local->hw.conf)) {
139 /*
140 * mac80211.h documents that this is only valid
141 * when the channel is set to an HT type, and
142 * that otherwise STATIC is used.
143 */
144 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
145 } else if (local->hw.conf.smps_mode != local->smps_mode) {
146 local->hw.conf.smps_mode = local->smps_mode;
147 changed |= IEEE80211_CONF_CHANGE_SMPS;
148 }
149
Dmitry TARNYAGINcd6c5242011-12-12 12:58:43 +0100150 if (test_bit(SCAN_SW_SCANNING, &local->scanning) ||
151 test_bit(SCAN_HW_SCANNING, &local->scanning))
Johannes Berge8975582008-10-09 12:18:51 +0200152 power = chan->max_power;
Johannes Berg8318d782008-01-24 19:38:38 +0100153 else
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530154 power = local->power_constr_level ?
Hong Wua48b13a2012-01-11 20:34:30 +0200155 min(chan->max_power,
156 (chan->max_reg_power - local->power_constr_level)) :
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530157 chan->max_power;
158
Johannes Berg47afbaf2009-04-07 15:22:28 +0200159 if (local->user_power_level >= 0)
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530160 power = min(power, local->user_power_level);
161
Johannes Berge8975582008-10-09 12:18:51 +0200162 if (local->hw.conf.power_level != power) {
163 changed |= IEEE80211_CONF_CHANGE_POWER;
164 local->hw.conf.power_level = power;
165 }
Johannes Berg8318d782008-01-24 19:38:38 +0100166
Johannes Berge8975582008-10-09 12:18:51 +0200167 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200168 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200169 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800170 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200171 * HW reconfiguration should never fail, the driver has told
172 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800173 *
174 * Current status:
175 * rfkill is not integrated with mac80211 and a
176 * configuration command can thus fail if hardware rfkill
177 * is enabled
178 *
179 * FIXME: integrate rfkill with mac80211 and then add this
180 * WARN_ON() back
181 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200182 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800183 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200184 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200185
186 return ret;
187}
188
Johannes Berg471b3ef2007-12-28 14:32:58 +0100189void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
190 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200191{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100192 struct ieee80211_local *local = sdata->local;
Johannes Berg9cef8732009-05-14 13:10:14 +0200193 static const u8 zero[ETH_ALEN] = { 0 };
Johannes Berg471b3ef2007-12-28 14:32:58 +0100194
195 if (!changed)
196 return;
197
Johannes Berg9cef8732009-05-14 13:10:14 +0200198 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
Johannes Berg66e67e42012-01-20 13:55:27 +0100199 sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
Johannes Berg9cef8732009-05-14 13:10:14 +0200200 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200201 sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
202 else if (sdata->vif.type == NL80211_IFTYPE_AP)
Johannes Berg47846c92009-11-25 17:46:19 +0100203 sdata->vif.bss_conf.bssid = sdata->vif.addr;
Bill Jordan1be7fe82010-10-01 11:20:41 -0400204 else if (sdata->vif.type == NL80211_IFTYPE_WDS)
205 sdata->vif.bss_conf.bssid = NULL;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200206 else if (ieee80211_vif_is_mesh(&sdata->vif)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200207 sdata->vif.bss_conf.bssid = zero;
208 } else {
209 WARN_ON(1);
210 return;
211 }
212
213 switch (sdata->vif.type) {
214 case NL80211_IFTYPE_AP:
215 case NL80211_IFTYPE_ADHOC:
Bill Jordan1be7fe82010-10-01 11:20:41 -0400216 case NL80211_IFTYPE_WDS:
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200217 case NL80211_IFTYPE_MESH_POINT:
218 break;
219 default:
220 /* do not warn to simplify caller in scan.c */
221 changed &= ~BSS_CHANGED_BEACON_ENABLED;
222 if (WARN_ON(changed & BSS_CHANGED_BEACON))
223 return;
224 break;
225 }
226
227 if (changed & BSS_CHANGED_BEACON_ENABLED) {
Johannes Berg9607e6b2009-12-23 13:15:31 +0100228 if (local->quiescing || !ieee80211_sdata_running(sdata) ||
Ben Greearb23b0252011-02-04 11:54:17 -0800229 test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) {
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200230 sdata->vif.bss_conf.enable_beacon = false;
231 } else {
232 /*
233 * Beacon should be enabled, but AP mode must
234 * check whether there is a beacon configured.
235 */
236 switch (sdata->vif.type) {
237 case NL80211_IFTYPE_AP:
238 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200239 !!sdata->u.ap.beacon;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200240 break;
241 case NL80211_IFTYPE_ADHOC:
242 sdata->vif.bss_conf.enable_beacon =
Johannes Berg03791852010-04-06 11:18:42 +0200243 !!sdata->u.ibss.presp;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200244 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800245#ifdef CONFIG_MAC80211_MESH
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200246 case NL80211_IFTYPE_MESH_POINT:
Johannes Berg29cbe682010-12-03 09:20:44 +0100247 sdata->vif.bss_conf.enable_beacon =
248 !!sdata->u.mesh.mesh_id_len;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200249 break;
Javier Cardona7659a192010-12-07 10:41:47 -0800250#endif
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200251 default:
252 /* not reached */
253 WARN_ON(1);
254 break;
255 }
256 }
257 }
258
Johannes Berg12375ef2009-11-25 20:30:31 +0100259 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200260}
261
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200262u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200263{
Johannes Bergbda39332008-10-11 01:51:51 +0200264 sdata->vif.bss_conf.use_cts_prot = false;
265 sdata->vif.bss_conf.use_short_preamble = false;
266 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200267 return BSS_CHANGED_ERP_CTS_PROT |
268 BSS_CHANGED_ERP_PREAMBLE |
269 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200270}
271
Jiri Bencf0706e822007-05-05 11:45:53 -0700272static void ieee80211_tasklet_handler(unsigned long data)
273{
274 struct ieee80211_local *local = (struct ieee80211_local *) data;
Johannes Berg37fbd902011-09-29 16:04:39 +0200275 struct sta_info *sta, *tmp;
276 struct skb_eosp_msg_data *eosp_data;
Jiri Bencf0706e822007-05-05 11:45:53 -0700277 struct sk_buff *skb;
Jiri Bencf0706e822007-05-05 11:45:53 -0700278
279 while ((skb = skb_dequeue(&local->skb_queue)) ||
280 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
281 switch (skb->pkt_type) {
282 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100283 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e822007-05-05 11:45:53 -0700284 * netstack. */
285 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100286 ieee80211_rx(&local->hw, skb);
Jiri Bencf0706e822007-05-05 11:45:53 -0700287 break;
288 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e822007-05-05 11:45:53 -0700289 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100290 ieee80211_tx_status(&local->hw, skb);
Jiri Bencf0706e822007-05-05 11:45:53 -0700291 break;
Johannes Berg37fbd902011-09-29 16:04:39 +0200292 case IEEE80211_EOSP_MSG:
293 eosp_data = (void *)skb->cb;
294 for_each_sta_info(local, eosp_data->sta, sta, tmp) {
295 /* skip wrong virtual interface */
296 if (memcmp(eosp_data->iface,
297 sta->sdata->vif.addr, ETH_ALEN))
298 continue;
299 clear_sta_flag(sta, WLAN_STA_SP);
300 break;
301 }
302 dev_kfree_skb(skb);
303 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200304 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600305 WARN(1, "mac80211: Packet is of unknown type %d\n",
306 skb->pkt_type);
Jiri Bencf0706e822007-05-05 11:45:53 -0700307 dev_kfree_skb(skb);
308 break;
309 }
310 }
311}
312
Johannes Bergf2753dd2009-04-14 10:09:24 +0200313static void ieee80211_restart_work(struct work_struct *work)
314{
315 struct ieee80211_local *local =
316 container_of(work, struct ieee80211_local, restart_work);
317
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200318 /* wait for scan work complete */
319 flush_workqueue(local->workqueue);
320
321 mutex_lock(&local->mtx);
Luciano Coelho79f460c2011-05-11 17:09:36 +0300322 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
323 local->sched_scanning,
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200324 "%s called with hardware scan in progress\n", __func__);
325 mutex_unlock(&local->mtx);
326
Johannes Bergf2753dd2009-04-14 10:09:24 +0200327 rtnl_lock();
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200328 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200329 ieee80211_reconfig(local);
330 rtnl_unlock();
331}
332
333void ieee80211_restart_hw(struct ieee80211_hw *hw)
334{
335 struct ieee80211_local *local = hw_to_local(hw);
336
Johannes Bergb5878a22010-04-07 16:48:40 +0200337 trace_api_restart_hw(local);
338
Michael Bueschb196d032011-03-07 13:09:12 +0100339 wiphy_info(hw->wiphy,
340 "Hardware restart was requested\n");
341
John W. Linville18145c62010-08-30 15:12:02 -0400342 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Bergf2753dd2009-04-14 10:09:24 +0200343 ieee80211_stop_queues_by_reason(hw,
344 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
345
346 schedule_work(&local->restart_work);
347}
348EXPORT_SYMBOL(ieee80211_restart_hw);
349
Johannes Berg0f782312009-12-01 13:37:02 +0100350static void ieee80211_recalc_smps_work(struct work_struct *work)
351{
352 struct ieee80211_local *local =
353 container_of(work, struct ieee80211_local, recalc_smps);
354
355 mutex_lock(&local->iflist_mtx);
Johannes Berg025e6be2010-10-05 10:41:47 +0200356 ieee80211_recalc_smps(local);
Johannes Berg0f782312009-12-01 13:37:02 +0100357 mutex_unlock(&local->iflist_mtx);
358}
359
John W. Linville26b36cf2010-06-04 14:25:44 -0400360#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300361static int ieee80211_ifa_changed(struct notifier_block *nb,
362 unsigned long data, void *arg)
363{
364 struct in_ifaddr *ifa = arg;
365 struct ieee80211_local *local =
366 container_of(nb, struct ieee80211_local,
367 ifa_notifier);
368 struct net_device *ndev = ifa->ifa_dev->dev;
369 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300370 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300371 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300372 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300373 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300374 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300375
376 /* Make sure it's our interface that got changed */
377 if (!wdev)
378 return NOTIFY_DONE;
379
380 if (wdev->wiphy != local->hw.wiphy)
381 return NOTIFY_DONE;
382
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300383 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300384 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300385
386 /* ARP filtering is only supported in managed mode */
387 if (sdata->vif.type != NL80211_IFTYPE_STATION)
388 return NOTIFY_DONE;
389
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000390 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300391 if (!idev)
392 return NOTIFY_DONE;
393
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300394 ifmgd = &sdata->u.mgd;
395 mutex_lock(&ifmgd->mtx);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300396
397 /* Copy the addresses to the bss_conf list */
398 ifa = idev->ifa_list;
399 while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
400 bss_conf->arp_addr_list[c] = ifa->ifa_address;
401 ifa = ifa->ifa_next;
402 c++;
403 }
404
405 /* If not all addresses fit the list, disable filtering */
406 if (ifa) {
407 sdata->arp_filter_state = false;
408 c = 0;
409 } else {
410 sdata->arp_filter_state = true;
411 }
412 bss_conf->arp_addr_cnt = c;
413
Eliad Peller53d69c32011-12-12 15:30:04 +0200414 /* Configure driver only if associated (which also implies it is up) */
Juuso Oikarinen68542962010-06-09 13:43:26 +0300415 if (ifmgd->associated) {
416 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
417 ieee80211_bss_info_change_notify(sdata,
418 BSS_CHANGED_ARP_FILTER);
419 }
420
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300421 mutex_unlock(&ifmgd->mtx);
422
423 return NOTIFY_DONE;
424}
John W. Linville26b36cf2010-06-04 14:25:44 -0400425#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300426
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400427static int ieee80211_napi_poll(struct napi_struct *napi, int budget)
428{
429 struct ieee80211_local *local =
430 container_of(napi, struct ieee80211_local, napi);
431
432 return local->ops->napi_poll(&local->hw, budget);
433}
434
435void ieee80211_napi_schedule(struct ieee80211_hw *hw)
436{
437 struct ieee80211_local *local = hw_to_local(hw);
438
439 napi_schedule(&local->napi);
440}
441EXPORT_SYMBOL(ieee80211_napi_schedule);
442
443void ieee80211_napi_complete(struct ieee80211_hw *hw)
444{
445 struct ieee80211_local *local = hw_to_local(hw);
446
447 napi_complete(&local->napi);
448}
449EXPORT_SYMBOL(ieee80211_napi_complete);
450
Johannes Berg2e161f72010-08-12 15:38:38 +0200451/* There isn't a lot of sense in it, but you can transmit anything you like */
452static const struct ieee80211_txrx_stypes
453ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
454 [NL80211_IFTYPE_ADHOC] = {
455 .tx = 0xffff,
456 .rx = BIT(IEEE80211_STYPE_ACTION >> 4),
457 },
458 [NL80211_IFTYPE_STATION] = {
459 .tx = 0xffff,
460 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
461 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
462 },
463 [NL80211_IFTYPE_AP] = {
464 .tx = 0xffff,
465 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
466 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
467 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
468 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
469 BIT(IEEE80211_STYPE_AUTH >> 4) |
470 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
471 BIT(IEEE80211_STYPE_ACTION >> 4),
472 },
473 [NL80211_IFTYPE_AP_VLAN] = {
474 /* copy AP */
475 .tx = 0xffff,
476 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
477 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
478 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
479 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
480 BIT(IEEE80211_STYPE_AUTH >> 4) |
481 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
482 BIT(IEEE80211_STYPE_ACTION >> 4),
483 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200484 [NL80211_IFTYPE_P2P_CLIENT] = {
485 .tx = 0xffff,
486 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
487 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
488 },
489 [NL80211_IFTYPE_P2P_GO] = {
490 .tx = 0xffff,
491 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
492 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
493 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
494 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
495 BIT(IEEE80211_STYPE_AUTH >> 4) |
496 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
497 BIT(IEEE80211_STYPE_ACTION >> 4),
498 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800499 [NL80211_IFTYPE_MESH_POINT] = {
500 .tx = 0xffff,
Javier Cardona71839122011-04-07 15:08:31 -0700501 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
502 BIT(IEEE80211_STYPE_AUTH >> 4) |
503 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Javier Cardonac7108a72010-12-16 17:37:50 -0800504 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200505};
506
Ben Greearef96a8422011-11-18 11:32:00 -0800507static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
508 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
509 IEEE80211_HT_AMPDU_PARM_DENSITY,
510
511 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
512 IEEE80211_HT_CAP_MAX_AMSDU |
513 IEEE80211_HT_CAP_SGI_40),
514 .mcs = {
515 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
516 0xff, 0xff, 0xff, 0xff, 0xff, },
517 },
518};
519
Jiri Bencf0706e822007-05-05 11:45:53 -0700520struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
521 const struct ieee80211_ops *ops)
522{
Jiri Bencf0706e822007-05-05 11:45:53 -0700523 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100524 int priv_size, i;
Jiri Bencf0706e822007-05-05 11:45:53 -0700525 struct wiphy *wiphy;
526
Johannes Bergf09603a2012-01-20 13:55:21 +0100527 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
528 return NULL;
529
Jiri Bencf0706e822007-05-05 11:45:53 -0700530 /* Ensure 32-byte alignment of our private data and hw private data.
531 * We use the wiphy priv data for both our ieee80211_local and for
532 * the driver's private data
533 *
534 * In memory it'll be like this:
535 *
536 * +-------------------------+
537 * | struct wiphy |
538 * +-------------------------+
539 * | struct ieee80211_local |
540 * +-------------------------+
541 * | driver's private data |
542 * +-------------------------+
543 *
544 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000545 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e822007-05-05 11:45:53 -0700546
547 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
548
549 if (!wiphy)
550 return NULL;
551
Johannes Berg2e161f72010-08-12 15:38:38 +0200552 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
553
Johannes Berg207aba62010-12-10 17:10:44 +0100554 wiphy->privid = mac80211_wiphy_privid;
555
Johannes Berg9bc383d2009-11-19 11:55:19 +0100556 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
557 WIPHY_FLAG_4ADDR_AP |
Johannes Bergee971922011-11-04 11:18:18 +0100558 WIPHY_FLAG_4ADDR_STATION |
Johannes Berg7c4ef712011-11-18 15:33:48 +0100559 WIPHY_FLAG_REPORTS_OBSS |
560 WIPHY_FLAG_OFFCHAN_TX |
561 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
Johannes Berg207aba62010-12-10 17:10:44 +0100562
Alexander Simon13c40c52011-11-30 16:56:34 +0100563 wiphy->features = NL80211_FEATURE_SK_TX_STATUS |
564 NL80211_FEATURE_HT_IBSS;
Johannes Berga729cff2011-11-06 14:13:34 +0100565
Johannes Berg207aba62010-12-10 17:10:44 +0100566 if (!ops->set_key)
567 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200568
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100569 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e822007-05-05 11:45:53 -0700570
571 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200572
Jiri Bencf0706e822007-05-05 11:45:53 -0700573 local->hw.wiphy = wiphy;
574
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000575 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e822007-05-05 11:45:53 -0700576
Johannes Berg11127e92011-11-16 16:02:47 +0100577 BUG_ON(!ops->tx && !ops->tx_frags);
Johannes Berg4150c572007-09-17 01:29:23 -0400578 BUG_ON(!ops->start);
579 BUG_ON(!ops->stop);
Johannes Berg4480f15c2007-07-10 19:32:10 +0200580 BUG_ON(!ops->config);
581 BUG_ON(!ops->add_interface);
Johannes Berg4150c572007-09-17 01:29:23 -0400582 BUG_ON(!ops->remove_interface);
583 BUG_ON(!ops->configure_filter);
Jiri Bencf0706e822007-05-05 11:45:53 -0700584 local->ops = ops;
585
Johannes Berge6a98542008-10-21 12:40:02 +0200586 /* set up some defaults */
587 local->hw.queues = 1;
588 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200589 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200590 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Helmut Schaa39e68712011-08-05 11:46:19 +0200591 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200592 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
593 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergc428c892009-04-29 00:28:18 +0200594 local->user_power_level = -1;
Ben Greearef96a8422011-11-18 11:32:00 -0800595 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
Jiri Bencf0706e822007-05-05 11:45:53 -0700596
Johannes Berg79010422007-09-18 17:29:21 -0400597 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000598
599 __hw_addr_init(&local->mc_list);
600
Johannes Bergc771c9d2009-01-23 22:54:03 +0100601 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200602 mutex_init(&local->mtx);
Jiri Bencf0706e822007-05-05 11:45:53 -0700603
Johannes Bergad0e2b52010-06-01 10:19:19 +0200604 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e2009-06-17 17:43:56 +0200605 spin_lock_init(&local->filter_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200606 spin_lock_init(&local->queue_stop_reason_lock);
607
Johannes Berg681c4d02011-01-12 13:40:33 +0100608 /*
609 * The rx_skb_queue is only accessed from tasklets,
610 * but other SKB queues are used from within IRQ
611 * context. Therefore, this one needs a different
612 * locking class so our direct, non-irq-safe use of
613 * the queue's lock doesn't throw lockdep warnings.
614 */
615 skb_queue_head_init_class(&local->rx_skb_queue,
616 &ieee80211_rx_skb_queue_class);
Christian Lamparter24a8fda2010-12-30 17:25:29 +0100617
Johannes Bergc2b13452008-09-11 00:01:55 +0200618 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e822007-05-05 11:45:53 -0700619
Johannes Bergaf6b6372009-12-23 13:15:35 +0100620 ieee80211_work_init(local);
621
Johannes Bergf2753dd2009-04-14 10:09:24 +0200622 INIT_WORK(&local->restart_work, ieee80211_restart_work);
623
Johannes Berg3ac64be2009-08-17 16:16:53 +0200624 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100625 INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
626 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200627
Kalle Valo520eb822008-12-18 23:35:27 +0200628 INIT_WORK(&local->dynamic_ps_enable_work,
629 ieee80211_dynamic_ps_enable_work);
630 INIT_WORK(&local->dynamic_ps_disable_work,
631 ieee80211_dynamic_ps_disable_work);
632 setup_timer(&local->dynamic_ps_timer,
633 ieee80211_dynamic_ps_timer, (unsigned long) local);
634
Luciano Coelho85a99942011-05-12 16:28:29 +0300635 INIT_WORK(&local->sched_scan_stopped_work,
636 ieee80211_sched_scan_stopped_work);
637
Johannes Berga729cff2011-11-06 14:13:34 +0100638 spin_lock_init(&local->ack_status_lock);
639 idr_init(&local->ack_status_frames);
640 /* preallocate at least one entry */
641 idr_pre_get(&local->ack_status_frames, GFP_KERNEL);
642
Jiri Bencf0706e822007-05-05 11:45:53 -0700643 sta_info_init(local);
644
Johannes Berga6a67db2010-06-10 10:21:41 +0200645 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100646 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200647 atomic_set(&local->agg_queue_stop[i], 0);
648 }
Jiri Bencf0706e822007-05-05 11:45:53 -0700649 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
650 (unsigned long)local);
Jiri Bencf0706e822007-05-05 11:45:53 -0700651
652 tasklet_init(&local->tasklet,
653 ieee80211_tasklet_handler,
654 (unsigned long) local);
Jiri Bencf0706e822007-05-05 11:45:53 -0700655
656 skb_queue_head_init(&local->skb_queue);
657 skb_queue_head_init(&local->skb_queue_unreliable);
658
John W. Linville4e6cbfd2010-07-29 16:14:13 -0400659 /* init dummy netdev for use w/ NAPI */
660 init_dummy_netdev(&local->napi_dev);
661
Johannes Bergfe67c912010-11-27 20:02:59 +0100662 ieee80211_led_names(local);
663
Johannes Berg21f83582010-12-18 17:20:47 +0100664 ieee80211_hw_roc_setup(local);
665
Johannes Berg005e4722012-02-26 11:24:35 +0100666 return &local->hw;
Jiri Bencf0706e822007-05-05 11:45:53 -0700667}
668EXPORT_SYMBOL(ieee80211_alloc_hw);
669
670int ieee80211_register_hw(struct ieee80211_hw *hw)
671{
672 struct ieee80211_local *local = hw_to_local(hw);
Johannes Berg7527a782011-05-13 10:58:57 +0200673 int result, i;
Johannes Berg8318d782008-01-24 19:38:38 +0100674 enum ieee80211_band band;
Johannes Bergbe4a4b62010-05-03 08:49:48 +0200675 int channels, max_bitrates;
Mahesh Palivela5e89ac72012-07-02 11:25:12 +0000676 bool supp_ht, supp_vht;
Johannes Berg25e47c12009-04-02 20:14:06 +0200677 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200678 /* keep WEP first, it may be removed below */
Johannes Berg25e47c12009-04-02 20:14:06 +0200679 WLAN_CIPHER_SUITE_WEP40,
680 WLAN_CIPHER_SUITE_WEP104,
681 WLAN_CIPHER_SUITE_TKIP,
682 WLAN_CIPHER_SUITE_CCMP,
683
684 /* keep last -- depends on hw flags! */
685 WLAN_CIPHER_SUITE_AES_CMAC
686 };
Johannes Berg8318d782008-01-24 19:38:38 +0100687
Larry Finger38bb3e92011-05-05 18:48:47 -0500688 if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns)
689#ifdef CONFIG_PM
690 && (!local->ops->suspend || !local->ops->resume)
691#endif
692 )
Johannes Bergeecc4802011-05-04 15:37:29 +0200693 return -EINVAL;
694
Eliad Peller885bd8e2012-02-02 17:44:55 +0200695 if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan)
696 return -EINVAL;
697
Helmut Schaa78be49e2010-10-02 11:31:55 +0200698 if (hw->max_report_rates == 0)
699 hw->max_report_rates = hw->max_rates;
700
Johannes Berg8318d782008-01-24 19:38:38 +0100701 /*
702 * generic code guarantees at least one band,
703 * set this very early because much code assumes
704 * that hw.conf.channel is assigned
705 */
Johannes Berg2a519312009-02-10 21:25:55 +0100706 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200707 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200708 supp_ht = false;
Mahesh Palivela5e89ac72012-07-02 11:25:12 +0000709 supp_vht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100710 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
711 struct ieee80211_supported_band *sband;
712
713 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200714 if (!sband)
715 continue;
716 if (!local->oper_channel) {
Johannes Berg8318d782008-01-24 19:38:38 +0100717 /* init channel we're on */
718 local->hw.conf.channel =
Johannes Berg58905ca2009-05-07 14:23:01 +0200719 local->oper_channel = &sband->channels[0];
720 local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
Johannes Berg8318d782008-01-24 19:38:38 +0100721 }
Johannes Bergde95a542009-04-01 11:58:36 +0200722 channels += sband->n_channels;
723
724 if (max_bitrates < sband->n_bitrates)
725 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200726 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Mahesh Palivela5e89ac72012-07-02 11:25:12 +0000727 supp_vht = supp_vht || sband->vht_cap.vht_supported;
Johannes Berg8318d782008-01-24 19:38:38 +0100728 }
Jiri Bencf0706e822007-05-05 11:45:53 -0700729
Johannes Berg5ba63532009-08-07 17:54:07 +0200730 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
731 sizeof(void *) * channels, GFP_KERNEL);
732 if (!local->int_scan_req)
Johannes Berg2a519312009-02-10 21:25:55 +0100733 return -ENOMEM;
734
Simon Wunderlichc72e8d32011-11-30 16:56:30 +0100735 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
736 if (!local->hw.wiphy->bands[band])
737 continue;
738 local->int_scan_req->rates[band] = (u32) -1;
739 }
740
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700741 /* if low-level driver supports AP, we also support VLAN */
Johannes Berg7527a782011-05-13 10:58:57 +0200742 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
743 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
744 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
745 }
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700746
747 /* mac80211 always supports monitor */
Johannes Berg7527a782011-05-13 10:58:57 +0200748 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
749 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
750
Johannes Berg8e621fc2011-05-14 01:55:23 +0200751 /*
752 * mac80211 doesn't support more than 1 channel, and also not more
753 * than one IBSS interface
754 */
755 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
756 const struct ieee80211_iface_combination *c;
757 int j;
758
759 c = &hw->wiphy->iface_combinations[i];
760
761 if (c->num_different_channels > 1)
Johannes Berg7527a782011-05-13 10:58:57 +0200762 return -EINVAL;
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700763
Johannes Berg8e621fc2011-05-14 01:55:23 +0200764 for (j = 0; j < c->n_limits; j++)
765 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
766 c->limits[j].max > 1)
767 return -EINVAL;
768 }
769
Johannes Berg5eb5a522010-08-25 14:34:01 +0200770#ifndef CONFIG_MAC80211_MESH
771 /* mesh depends on Kconfig, but drivers should set it if they want */
772 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
773#endif
774
Javier Cardona1570ca52011-04-07 15:08:35 -0700775 /* if the underlying driver supports mesh, mac80211 will (at least)
776 * provide routing of mesh authentication frames to userspace */
777 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
778 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
779
Johannes Berga621fa42010-08-27 14:26:54 +0300780 /* mac80211 supports control port protocol changing */
781 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
782
Johannes Berg77965c92009-02-18 18:45:06 +0100783 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
784 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
785 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
786 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
787
Kalle Valoab133152010-01-12 10:42:31 +0200788 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
789 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
790 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
791
Johannes Bergde95a542009-04-01 11:58:36 +0200792 /*
793 * Calculate scan IE length -- we need this to alloc
794 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300795 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200796 * information -- SSID is the driver's responsibility.
797 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300798 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
799 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200800 if (supp_ht)
801 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200802
Mahesh Palivela5e89ac72012-07-02 11:25:12 +0000803 if (supp_vht)
804 local->scan_ies_len +=
Mahesh Palivela8d200ae2012-10-10 11:25:40 +0000805 2 + sizeof(struct ieee80211_vht_cap);
Mahesh Palivela5e89ac72012-07-02 11:25:12 +0000806
Johannes Bergde95a542009-04-01 11:58:36 +0200807 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
Arik Nemtsovdfe018b2011-09-28 14:12:52 +0300865 /* mac80211 based drivers don't support internal TDLS setup */
866 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
867 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
868
Jiri Bencf0706e822007-05-05 11:45:53 -0700869 result = wiphy_register(local->hw.wiphy);
870 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +0100871 goto fail_wiphy_register;
Jiri Bencf0706e822007-05-05 11:45:53 -0700872
Johannes Berge2530082008-05-17 00:57:14 +0200873 /*
874 * We use the number of queues for feature tests (QoS, HT) internally
875 * so restrict them appropriately.
876 */
Johannes Berge2530082008-05-17 00:57:14 +0200877 if (hw->queues > IEEE80211_MAX_QUEUES)
878 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +0200879
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400880 local->workqueue =
Tejun Heo99b88a02010-10-15 17:35:28 +0200881 alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400882 if (!local->workqueue) {
Jiri Bencf0706e822007-05-05 11:45:53 -0700883 result = -ENOMEM;
884 goto fail_workqueue;
885 }
886
Johannes Bergb306f452007-07-10 19:32:08 +0200887 /*
888 * The hardware needs headroom for sending the frame,
889 * and we need some headroom for passing the frame to monitor
890 * interfaces, but never both at the same time.
891 */
Jiri Benc33ccad32007-07-18 17:10:44 +0200892 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200893 IEEE80211_TX_STATUS_HEADROOM);
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
Mohammed Shafi Shajakhanb57e6b52012-02-09 19:59:43 +0530913 ieee80211_led_init(local);
914
Jiri Bencf0706e822007-05-05 11:45:53 -0700915 rtnl_lock();
Jiri Bencf0706e822007-05-05 11:45:53 -0700916
Johannes Berg830f9032007-10-28 14:51:05 +0100917 result = ieee80211_init_rate_ctrl_alg(local,
918 hw->rate_control_algorithm);
Jiri Bencf0706e822007-05-05 11:45:53 -0700919 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700920 wiphy_debug(local->hw.wiphy,
921 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e822007-05-05 11:45:53 -0700922 goto fail_rate;
923 }
924
Johannes Berg8dffff22008-12-09 00:10:30 +0100925 /* add one default STA interface if supported */
926 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
927 result = ieee80211_if_add(local, "wlan%d", NULL,
928 NL80211_IFTYPE_STATION, NULL);
929 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -0700930 wiphy_warn(local->hw.wiphy,
931 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +0100932 }
Jiri Bencf0706e822007-05-05 11:45:53 -0700933
Jiri Bencf0706e822007-05-05 11:45:53 -0700934 rtnl_unlock();
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 Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 11:45:53 -0700967 rtnl_unlock();
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +0100968 ieee80211_wep_free(local);
Jiri Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 11:45:53 -0700977 return result;
978}
979EXPORT_SYMBOL(ieee80211_register_hw);
980
Jiri Bencf0706e822007-05-05 11:45:53 -0700981void ieee80211_unregister_hw(struct ieee80211_hw *hw)
982{
983 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 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 Bencf0706e822007-05-05 11:45:53 -07001014 ieee80211_clear_tx_pending(local);
Jiri Bencf0706e822007-05-05 11:45:53 -07001015 rate_control_deinitialize(local);
1016
Joe Perchesf64f9e72009-11-29 16:55:45 -08001017 if (skb_queue_len(&local->skb_queue) ||
1018 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001019 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e822007-05-05 11:45:53 -07001020 skb_queue_purge(&local->skb_queue);
1021 skb_queue_purge(&local->skb_queue_unreliable);
Christian Lamparter24a8fda2010-12-30 17:25:29 +01001022 skb_queue_purge(&local->rx_skb_queue);
Jiri Bencf0706e822007-05-05 11:45:53 -07001023
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001024 destroy_workqueue(local->workqueue);
Jiri Bencf0706e822007-05-05 11:45:53 -07001025 wiphy_unregister(local->hw.wiphy);
Stanislaw Gruszkaecb44332011-08-12 14:00:59 +02001026 sta_info_stop(local);
Jiri Bencf0706e822007-05-05 11:45:53 -07001027 ieee80211_wep_free(local);
1028 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +02001029 kfree(local->int_scan_req);
Jiri Bencf0706e822007-05-05 11:45:53 -07001030}
1031EXPORT_SYMBOL(ieee80211_unregister_hw);
1032
Johannes Berga729cff2011-11-06 14:13:34 +01001033static int ieee80211_free_ack_frame(int id, void *p, void *data)
1034{
1035 WARN_ONCE(1, "Have pending ack frames!\n");
1036 kfree_skb(p);
1037 return 0;
1038}
1039
Jiri Bencf0706e822007-05-05 11:45:53 -07001040void ieee80211_free_hw(struct ieee80211_hw *hw)
1041{
1042 struct ieee80211_local *local = hw_to_local(hw);
1043
Johannes Bergc771c9d2009-01-23 22:54:03 +01001044 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +02001045 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +01001046
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001047 if (local->wiphy_ciphers_allocated)
1048 kfree(local->hw.wiphy->cipher_suites);
1049
Johannes Berga729cff2011-11-06 14:13:34 +01001050 idr_for_each(&local->ack_status_frames,
1051 ieee80211_free_ack_frame, NULL);
1052 idr_destroy(&local->ack_status_frames);
1053
Jiri Bencf0706e822007-05-05 11:45:53 -07001054 wiphy_free(local->hw.wiphy);
1055}
1056EXPORT_SYMBOL(ieee80211_free_hw);
1057
Jiri Bencf0706e822007-05-05 11:45:53 -07001058static int __init ieee80211_init(void)
1059{
1060 struct sk_buff *skb;
1061 int ret;
1062
Johannes Berge039fa42008-05-15 12:55:29 +02001063 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1064 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +02001065 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e822007-05-05 11:45:53 -07001066
Felix Fietkaucccf1292008-10-05 18:07:45 +02001067 ret = rc80211_minstrel_init();
1068 if (ret)
1069 return ret;
1070
Felix Fietkauec8aa662010-05-13 16:48:03 +02001071 ret = rc80211_minstrel_ht_init();
1072 if (ret)
1073 goto err_minstrel;
1074
Johannes Berg4b475892008-01-02 15:17:03 +01001075 ret = rc80211_pid_init();
Mattias Nisslerad018372007-12-19 01:25:57 +01001076 if (ret)
Johannes Berg47846c92009-11-25 17:46:19 +01001077 goto err_pid;
Jiri Bencf0706e822007-05-05 11:45:53 -07001078
Johannes Berg47846c92009-11-25 17:46:19 +01001079 ret = ieee80211_iface_init();
1080 if (ret)
1081 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -07001082
Jiri Bencf0706e822007-05-05 11:45:53 -07001083 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +01001084 err_netdev:
1085 rc80211_pid_exit();
1086 err_pid:
Felix Fietkauec8aa662010-05-13 16:48:03 +02001087 rc80211_minstrel_ht_exit();
1088 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +01001089 rc80211_minstrel_exit();
1090
1091 return ret;
Jiri Bencf0706e822007-05-05 11:45:53 -07001092}
1093
Jiri Bencf0706e822007-05-05 11:45:53 -07001094static void __exit ieee80211_exit(void)
1095{
Johannes Berg4b475892008-01-02 15:17:03 +01001096 rc80211_pid_exit();
Felix Fietkauec8aa662010-05-13 16:48:03 +02001097 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +02001098 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +01001099
Luis Carlos Cobof7a92142008-02-23 15:17:18 +01001100 if (mesh_allocated)
1101 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001102
Johannes Berg47846c92009-11-25 17:46:19 +01001103 ieee80211_iface_exit();
Johannes Bergd07c7cf2011-05-14 11:04:51 +02001104
1105 rcu_barrier();
Jiri Bencf0706e822007-05-05 11:45:53 -07001106}
1107
1108
Johannes Bergca9938fe2007-09-11 12:50:32 +02001109subsys_initcall(ieee80211_init);
Jiri Bencf0706e822007-05-05 11:45:53 -07001110module_exit(ieee80211_exit);
1111
1112MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1113MODULE_LICENSE("GPL");