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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>
Johannes Bergd98ad832014-09-03 15:24:57 +03005 * Copyright 2013-2014 Intel Mobile Communications GmbH
Jiri Bencf0706e82007-05-05 11:45:53 -07006 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <net/mac80211.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070013#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/netdevice.h>
16#include <linux/types.h>
17#include <linux/slab.h>
18#include <linux/skbuff.h>
19#include <linux/etherdevice.h>
20#include <linux/if_arp.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070021#include <linux/rtnetlink.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070022#include <linux/bitmap.h>
Jean Pihete8db0be2011-08-25 15:35:03 +020023#include <linux/pm_qos.h>
Juuso Oikarinen68542962010-06-09 13:43:26 +030024#include <linux/inetdevice.h>
Eric W. Biederman881d9662007-09-17 11:56:21 -070025#include <net/net_namespace.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070026#include <net/cfg80211.h>
Johannes Berga65240c2013-01-14 15:14:34 +010027#include <net/addrconf.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070028
Jiri Bencf0706e82007-05-05 11:45:53 -070029#include "ieee80211_i.h"
Johannes Berg24487982009-04-23 18:52:52 +020030#include "driver-ops.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040031#include "rate.h"
Luis Carlos Cobof7a92142008-02-23 15:17:18 +010032#include "mesh.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070033#include "wep.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040034#include "led.h"
Michael Wue0eb6852007-09-18 17:29:21 -040035#include "cfg.h"
Jiri Bence9f207f2007-05-05 11:46:38 -070036#include "debugfs.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070037
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_allmultis))
Johannes Berg4150c572007-09-17 01:29:23 -040045 new_flags |= FIF_ALLMULTI;
46
Ben Greear8a690672012-04-17 10:54:16 -070047 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
48 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
Michael Wu8cc9a732008-01-31 19:48:23 +010049 new_flags |= FIF_BCN_PRBRESP_PROMISC;
50
Johannes Berg7be50862010-10-13 12:06:24 +020051 if (local->fif_probe_req || local->probe_req_reg)
52 new_flags |= FIF_PROBE_REQ;
53
Michael Wu8cc9a732008-01-31 19:48:23 +010054 if (local->fif_fcsfail)
55 new_flags |= FIF_FCSFAIL;
56
57 if (local->fif_plcpfail)
58 new_flags |= FIF_PLCPFAIL;
59
60 if (local->fif_control)
61 new_flags |= FIF_CONTROL;
62
63 if (local->fif_other_bss)
64 new_flags |= FIF_OTHER_BSS;
Johannes Berg4150c572007-09-17 01:29:23 -040065
Igor Perminove3b90ca2009-08-04 16:48:51 +040066 if (local->fif_pspoll)
67 new_flags |= FIF_PSPOLL;
68
Johannes Berg3ac64be2009-08-17 16:16:53 +020069 spin_lock_bh(&local->filter_lock);
Johannes Berg4150c572007-09-17 01:29:23 -040070 changed_flags = local->filter_flags ^ new_flags;
71
Jiri Pirko22bedad32010-04-01 21:22:57 +000072 mc = drv_prepare_multicast(local, &local->mc_list);
Johannes Berg3ac64be2009-08-17 16:16:53 +020073 spin_unlock_bh(&local->filter_lock);
74
Johannes Berg4150c572007-09-17 01:29:23 -040075 /* be a bit nasty */
76 new_flags |= (1<<31);
77
Johannes Berg3ac64be2009-08-17 16:16:53 +020078 drv_configure_filter(local, changed_flags, &new_flags, mc);
Johannes Berg4150c572007-09-17 01:29:23 -040079
80 WARN_ON(new_flags & (1<<31));
81
82 local->filter_flags = new_flags & ~(1<<31);
83}
84
Johannes Berg3ac64be2009-08-17 16:16:53 +020085static void ieee80211_reconfig_filter(struct work_struct *work)
86{
87 struct ieee80211_local *local =
88 container_of(work, struct ieee80211_local, reconfig_filter);
89
90 ieee80211_configure_filter(local);
91}
92
Johannes Berg55de9082012-07-26 17:24:39 +020093static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
Johannes Bergb2c258f2007-07-27 15:43:23 +020094{
Johannes Berg1ea6f9c2012-10-24 10:59:25 +020095 struct ieee80211_sub_if_data *sdata;
Karl Beldan675a0b02013-03-25 16:26:57 +010096 struct cfg80211_chan_def chandef = {};
Johannes Berg55de9082012-07-26 17:24:39 +020097 u32 changed = 0;
Johannes Berge8975582008-10-09 12:18:51 +020098 int power;
Felix Fietkauffd27782010-07-29 17:36:43 +020099 u32 offchannel_flag;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200100
Felix Fietkauffd27782010-07-29 17:36:43 +0200101 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Karl Beldan675a0b02013-03-25 16:26:57 +0100102
Simon Wunderlich7ca15a02013-07-08 16:55:56 +0200103 if (local->scan_chandef.chan) {
104 chandef = local->scan_chandef;
Ben Greearb23b0252011-02-04 11:54:17 -0800105 } else if (local->tmp_channel) {
Karl Beldan675a0b02013-03-25 16:26:57 +0100106 chandef.chan = local->tmp_channel;
107 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
108 chandef.center_freq1 = chandef.chan->center_freq;
109 } else
110 chandef = local->_oper_chandef;
Ben Greearb23b0252011-02-04 11:54:17 -0800111
Karl Beldan675a0b02013-03-25 16:26:57 +0100112 WARN(!cfg80211_chandef_valid(&chandef),
113 "control:%d MHz width:%d center: %d/%d MHz",
114 chandef.chan->center_freq, chandef.width,
115 chandef.center_freq1, chandef.center_freq2);
116
117 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
Ben Greearb23b0252011-02-04 11:54:17 -0800118 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
119 else
120 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
121
Felix Fietkauffd27782010-07-29 17:36:43 +0200122 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200123
Karl Beldan675a0b02013-03-25 16:26:57 +0100124 if (offchannel_flag ||
125 !cfg80211_chandef_identical(&local->hw.conf.chandef,
126 &local->_oper_chandef)) {
127 local->hw.conf.chandef = chandef;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200128 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
129 }
Johannes Berg8318d782008-01-24 19:38:38 +0100130
Johannes Berg0f782312009-12-01 13:37:02 +0100131 if (!conf_is_ht(&local->hw.conf)) {
132 /*
133 * mac80211.h documents that this is only valid
134 * when the channel is set to an HT type, and
135 * that otherwise STATIC is used.
136 */
137 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
138 } else if (local->hw.conf.smps_mode != local->smps_mode) {
139 local->hw.conf.smps_mode = local->smps_mode;
140 changed |= IEEE80211_CONF_CHANGE_SMPS;
141 }
142
Simon Wunderlich0430c882013-07-08 16:55:55 +0200143 power = ieee80211_chandef_max_power(&chandef);
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530144
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200145 rcu_read_lock();
146 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
147 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
148 continue;
Felix Fietkau764152f2014-04-10 15:06:48 +0200149 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
150 continue;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200151 power = min(power, sdata->vif.bss_conf.txpower);
152 }
153 rcu_read_unlock();
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530154
Johannes Berge8975582008-10-09 12:18:51 +0200155 if (local->hw.conf.power_level != power) {
156 changed |= IEEE80211_CONF_CHANGE_POWER;
157 local->hw.conf.power_level = power;
158 }
Johannes Berg8318d782008-01-24 19:38:38 +0100159
Johannes Berg55de9082012-07-26 17:24:39 +0200160 return changed;
161}
162
163int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
164{
165 int ret = 0;
166
167 might_sleep();
168
169 if (!local->use_chanctx)
170 changed |= ieee80211_hw_conf_chan(local);
171 else
172 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
173 IEEE80211_CONF_CHANGE_POWER);
174
Johannes Berge8975582008-10-09 12:18:51 +0200175 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200176 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200177 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800178 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200179 * HW reconfiguration should never fail, the driver has told
180 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800181 *
182 * Current status:
183 * rfkill is not integrated with mac80211 and a
184 * configuration command can thus fail if hardware rfkill
185 * is enabled
186 *
187 * FIXME: integrate rfkill with mac80211 and then add this
188 * WARN_ON() back
189 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200190 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800191 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200192 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200193
194 return ret;
195}
196
Johannes Berg471b3ef2007-12-28 14:32:58 +0100197void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
198 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200199{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100200 struct ieee80211_local *local = sdata->local;
201
Felix Fietkau990baec2014-04-09 00:08:01 +0200202 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
Johannes Berg471b3ef2007-12-28 14:32:58 +0100203 return;
204
Johannes Berg12375ef2009-11-25 20:30:31 +0100205 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200206}
207
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200208u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200209{
Johannes Bergbda39332008-10-11 01:51:51 +0200210 sdata->vif.bss_conf.use_cts_prot = false;
211 sdata->vif.bss_conf.use_short_preamble = false;
212 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200213 return BSS_CHANGED_ERP_CTS_PROT |
214 BSS_CHANGED_ERP_PREAMBLE |
215 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200216}
217
Jiri Bencf0706e82007-05-05 11:45:53 -0700218static void ieee80211_tasklet_handler(unsigned long data)
219{
220 struct ieee80211_local *local = (struct ieee80211_local *) data;
221 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700222
223 while ((skb = skb_dequeue(&local->skb_queue)) ||
224 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
225 switch (skb->pkt_type) {
226 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100227 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700228 * netstack. */
229 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100230 ieee80211_rx(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700231 break;
232 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700233 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100234 ieee80211_tx_status(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700235 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200236 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600237 WARN(1, "mac80211: Packet is of unknown type %d\n",
238 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700239 dev_kfree_skb(skb);
240 break;
241 }
242 }
243}
244
Johannes Bergf2753dd2009-04-14 10:09:24 +0200245static void ieee80211_restart_work(struct work_struct *work)
246{
247 struct ieee80211_local *local =
248 container_of(work, struct ieee80211_local, restart_work);
Michal Kaziorab499db2015-05-22 10:22:40 +0200249 struct ieee80211_sub_if_data *sdata;
Johannes Bergf2753dd2009-04-14 10:09:24 +0200250
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200251 /* wait for scan work complete */
252 flush_workqueue(local->workqueue);
253
David Spinadeld43c6b62013-12-08 21:48:57 +0200254 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
255 "%s called with hardware scan in progress\n", __func__);
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200256
Johannes Bergf2753dd2009-04-14 10:09:24 +0200257 rtnl_lock();
Michal Kaziorab499db2015-05-22 10:22:40 +0200258 list_for_each_entry(sdata, &local->interfaces, list)
259 flush_delayed_work(&sdata->dec_tailroom_needed_wk);
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200260 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200261 ieee80211_reconfig(local);
262 rtnl_unlock();
263}
264
265void ieee80211_restart_hw(struct ieee80211_hw *hw)
266{
267 struct ieee80211_local *local = hw_to_local(hw);
268
Johannes Bergb5878a22010-04-07 16:48:40 +0200269 trace_api_restart_hw(local);
270
Michael Bueschb196d032011-03-07 13:09:12 +0100271 wiphy_info(hw->wiphy,
272 "Hardware restart was requested\n");
273
John W. Linville18145c62010-08-30 15:12:02 -0400274 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Berg445ea4e2013-02-13 12:25:28 +0100275 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300276 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
277 false);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200278
Arik Nemtsov04800ad2012-06-06 11:25:02 +0300279 /*
280 * Stop all Rx during the reconfig. We don't want state changes
281 * or driver callbacks while this is in progress.
282 */
283 local->in_reconfig = true;
284 barrier();
285
Johannes Bergf2753dd2009-04-14 10:09:24 +0200286 schedule_work(&local->restart_work);
287}
288EXPORT_SYMBOL(ieee80211_restart_hw);
289
John W. Linville26b36cf2010-06-04 14:25:44 -0400290#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300291static int ieee80211_ifa_changed(struct notifier_block *nb,
292 unsigned long data, void *arg)
293{
294 struct in_ifaddr *ifa = arg;
295 struct ieee80211_local *local =
296 container_of(nb, struct ieee80211_local,
297 ifa_notifier);
298 struct net_device *ndev = ifa->ifa_dev->dev;
299 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300300 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300301 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300302 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300303 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300304 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300305
306 /* Make sure it's our interface that got changed */
307 if (!wdev)
308 return NOTIFY_DONE;
309
310 if (wdev->wiphy != local->hw.wiphy)
311 return NOTIFY_DONE;
312
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300313 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300314 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300315
316 /* ARP filtering is only supported in managed mode */
317 if (sdata->vif.type != NL80211_IFTYPE_STATION)
318 return NOTIFY_DONE;
319
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000320 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300321 if (!idev)
322 return NOTIFY_DONE;
323
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300324 ifmgd = &sdata->u.mgd;
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200325 sdata_lock(sdata);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300326
327 /* Copy the addresses to the bss_conf list */
328 ifa = idev->ifa_list;
Johannes Berg0f19b412013-01-14 16:39:07 +0100329 while (ifa) {
330 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
331 bss_conf->arp_addr_list[c] = ifa->ifa_address;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300332 ifa = ifa->ifa_next;
333 c++;
334 }
335
Juuso Oikarinen68542962010-06-09 13:43:26 +0300336 bss_conf->arp_addr_cnt = c;
337
Eliad Peller53d69c32011-12-12 15:30:04 +0200338 /* Configure driver only if associated (which also implies it is up) */
Johannes Berg0f19b412013-01-14 16:39:07 +0100339 if (ifmgd->associated)
Juuso Oikarinen68542962010-06-09 13:43:26 +0300340 ieee80211_bss_info_change_notify(sdata,
341 BSS_CHANGED_ARP_FILTER);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300342
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200343 sdata_unlock(sdata);
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300344
Zhao, Gang8bd811a2014-04-21 12:53:05 +0800345 return NOTIFY_OK;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300346}
John W. Linville26b36cf2010-06-04 14:25:44 -0400347#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300348
Johannes Berga65240c2013-01-14 15:14:34 +0100349#if IS_ENABLED(CONFIG_IPV6)
350static int ieee80211_ifa6_changed(struct notifier_block *nb,
351 unsigned long data, void *arg)
352{
353 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
354 struct inet6_dev *idev = ifa->idev;
355 struct net_device *ndev = ifa->idev->dev;
356 struct ieee80211_local *local =
357 container_of(nb, struct ieee80211_local, ifa6_notifier);
358 struct wireless_dev *wdev = ndev->ieee80211_ptr;
359 struct ieee80211_sub_if_data *sdata;
360
361 /* Make sure it's our interface that got changed */
362 if (!wdev || wdev->wiphy != local->hw.wiphy)
363 return NOTIFY_DONE;
364
365 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
366
367 /*
368 * For now only support station mode. This is mostly because
369 * doing AP would have to handle AP_VLAN in some way ...
370 */
371 if (sdata->vif.type != NL80211_IFTYPE_STATION)
372 return NOTIFY_DONE;
373
374 drv_ipv6_addr_change(local, sdata, idev);
375
Zhao, Gang8bd811a2014-04-21 12:53:05 +0800376 return NOTIFY_OK;
Johannes Berga65240c2013-01-14 15:14:34 +0100377}
378#endif
379
Johannes Berg2e161f72010-08-12 15:38:38 +0200380/* There isn't a lot of sense in it, but you can transmit anything you like */
381static const struct ieee80211_txrx_stypes
382ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
383 [NL80211_IFTYPE_ADHOC] = {
384 .tx = 0xffff,
Will Hawkins3bfda622012-06-19 17:59:14 -0400385 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
386 BIT(IEEE80211_STYPE_AUTH >> 4) |
Antonio Quartulli41e31b82012-11-30 00:18:12 +0100387 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
388 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
Johannes Berg2e161f72010-08-12 15:38:38 +0200389 },
390 [NL80211_IFTYPE_STATION] = {
391 .tx = 0xffff,
392 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
393 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
394 },
395 [NL80211_IFTYPE_AP] = {
396 .tx = 0xffff,
397 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
398 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
399 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
400 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
401 BIT(IEEE80211_STYPE_AUTH >> 4) |
402 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
403 BIT(IEEE80211_STYPE_ACTION >> 4),
404 },
405 [NL80211_IFTYPE_AP_VLAN] = {
406 /* copy AP */
407 .tx = 0xffff,
408 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
409 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
410 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
411 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
412 BIT(IEEE80211_STYPE_AUTH >> 4) |
413 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
414 BIT(IEEE80211_STYPE_ACTION >> 4),
415 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200416 [NL80211_IFTYPE_P2P_CLIENT] = {
417 .tx = 0xffff,
418 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
419 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
420 },
421 [NL80211_IFTYPE_P2P_GO] = {
422 .tx = 0xffff,
423 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
424 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
425 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
426 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
427 BIT(IEEE80211_STYPE_AUTH >> 4) |
428 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
429 BIT(IEEE80211_STYPE_ACTION >> 4),
430 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800431 [NL80211_IFTYPE_MESH_POINT] = {
432 .tx = 0xffff,
Javier Cardona71839122011-04-07 15:08:31 -0700433 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
434 BIT(IEEE80211_STYPE_AUTH >> 4) |
435 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Javier Cardonac7108a72010-12-16 17:37:50 -0800436 },
Johannes Bergf142c6b2012-06-18 20:07:15 +0200437 [NL80211_IFTYPE_P2P_DEVICE] = {
438 .tx = 0xffff,
439 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
440 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
441 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200442};
443
Ben Greearef96a8422011-11-18 11:32:00 -0800444static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
445 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
446 IEEE80211_HT_AMPDU_PARM_DENSITY,
447
448 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
449 IEEE80211_HT_CAP_MAX_AMSDU |
Ben Greearbc0784d2012-12-12 16:56:20 -0800450 IEEE80211_HT_CAP_SGI_20 |
Pawel Kulakowskia2e74952014-04-01 07:13:21 +0200451 IEEE80211_HT_CAP_SGI_40 |
Jouni Malinen9a07bf52014-04-15 19:13:56 +0300452 IEEE80211_HT_CAP_LDPC_CODING |
453 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
Ben Greearef96a8422011-11-18 11:32:00 -0800454 .mcs = {
455 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
456 0xff, 0xff, 0xff, 0xff, 0xff, },
457 },
458};
459
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100460static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
461 .vht_cap_info =
462 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
463 IEEE80211_VHT_CAP_SHORT_GI_80 |
464 IEEE80211_VHT_CAP_SHORT_GI_160 |
465 IEEE80211_VHT_CAP_RXSTBC_1 |
466 IEEE80211_VHT_CAP_RXSTBC_2 |
467 IEEE80211_VHT_CAP_RXSTBC_3 |
468 IEEE80211_VHT_CAP_RXSTBC_4 |
469 IEEE80211_VHT_CAP_TXSTBC |
470 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
471 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
472 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
473 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
474 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
475 .supp_mcs = {
476 .rx_mcs_map = cpu_to_le16(~0),
477 .tx_mcs_map = cpu_to_le16(~0),
478 },
479};
480
Ben Greearad287572014-10-22 12:23:01 -0700481struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
482 const struct ieee80211_ops *ops,
483 const char *requested_name)
Jiri Bencf0706e82007-05-05 11:45:53 -0700484{
Jiri Bencf0706e82007-05-05 11:45:53 -0700485 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100486 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700487 struct wiphy *wiphy;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200488 bool use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700489
Johannes Bergc0af0732012-07-26 14:42:10 +0200490 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
491 !ops->add_interface || !ops->remove_interface ||
492 !ops->configure_filter))
493 return NULL;
494
Johannes Bergf09603a2012-01-20 13:55:21 +0100495 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
496 return NULL;
497
Johannes Berge269d862012-07-26 14:46:32 +0200498 /* check all or no channel context operations exist */
499 i = !!ops->add_chanctx + !!ops->remove_chanctx +
500 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
501 !!ops->unassign_vif_chanctx;
502 if (WARN_ON(i != 0 && i != 5))
503 return NULL;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200504 use_chanctx = i == 5;
Johannes Berge269d862012-07-26 14:46:32 +0200505
Jiri Bencf0706e82007-05-05 11:45:53 -0700506 /* Ensure 32-byte alignment of our private data and hw private data.
507 * We use the wiphy priv data for both our ieee80211_local and for
508 * the driver's private data
509 *
510 * In memory it'll be like this:
511 *
512 * +-------------------------+
513 * | struct wiphy |
514 * +-------------------------+
515 * | struct ieee80211_local |
516 * +-------------------------+
517 * | driver's private data |
518 * +-------------------------+
519 *
520 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000521 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700522
Ben Greearad287572014-10-22 12:23:01 -0700523 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
Jiri Bencf0706e82007-05-05 11:45:53 -0700524
525 if (!wiphy)
526 return NULL;
527
Johannes Berg2e161f72010-08-12 15:38:38 +0200528 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
529
Johannes Berg207aba62010-12-10 17:10:44 +0100530 wiphy->privid = mac80211_wiphy_privid;
531
Johannes Berg9bc383d2009-11-19 11:55:19 +0100532 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
533 WIPHY_FLAG_4ADDR_AP |
Johannes Bergee971922011-11-04 11:18:18 +0100534 WIPHY_FLAG_4ADDR_STATION |
Johannes Berg7c4ef712011-11-18 15:33:48 +0100535 WIPHY_FLAG_REPORTS_OBSS |
Johannes Berg81ddbb52012-03-26 18:47:18 +0200536 WIPHY_FLAG_OFFCHAN_TX;
537
538 if (ops->remain_on_channel)
539 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
Johannes Berg207aba62010-12-10 17:10:44 +0100540
Johannes Bergb2922192012-10-12 10:55:53 +0200541 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
542 NL80211_FEATURE_SAE |
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200543 NL80211_FEATURE_HT_IBSS |
Thomas Pedersena6dad6a2013-03-04 13:06:12 -0800544 NL80211_FEATURE_VIF_TXPOWER |
Ben Greearb5dfae02014-10-22 12:23:06 -0700545 NL80211_FEATURE_MAC_ON_CREATE |
Thomas Pedersena6dad6a2013-03-04 13:06:12 -0800546 NL80211_FEATURE_USERSPACE_MPM;
Johannes Berga729cff2011-11-06 14:13:34 +0100547
Sam Lefflercd2bb512012-10-11 21:03:35 -0700548 if (!ops->hw_scan)
Antonio Quartulli5c95b942012-10-16 08:39:22 +0200549 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
550 NL80211_FEATURE_AP_SCAN;
551
Sam Lefflercd2bb512012-10-11 21:03:35 -0700552
Johannes Berg207aba62010-12-10 17:10:44 +0100553 if (!ops->set_key)
554 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200555
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100556 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700557
558 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200559
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100560 if (sta_info_init(local))
561 goto err_free;
562
Jiri Bencf0706e82007-05-05 11:45:53 -0700563 local->hw.wiphy = wiphy;
564
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000565 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700566
567 local->ops = ops;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200568 local->use_chanctx = use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700569
Johannes Berge6a98542008-10-21 12:40:02 +0200570 /* set up some defaults */
571 local->hw.queues = 1;
572 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200573 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200574 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Helmut Schaa39e68712011-08-05 11:46:19 +0200575 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200576 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200577 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
578 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergac55d2f2012-05-10 09:09:10 +0200579 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
580 IEEE80211_RADIOTAP_MCS_HAVE_GI |
581 IEEE80211_RADIOTAP_MCS_HAVE_BW;
Johannes Berg51648922012-11-22 23:00:18 +0100582 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
583 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
Alexander Bondar219c3862013-01-22 16:52:23 +0200584 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
585 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200586 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
Ben Greearef96a8422011-11-18 11:32:00 -0800587 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100588 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
Jiri Bencf0706e82007-05-05 11:45:53 -0700589
Luciano Coelhoe9a21942014-10-08 09:48:36 +0300590 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
591
592 wiphy->extended_capabilities = local->ext_capa;
593 wiphy->extended_capabilities_mask = local->ext_capa;
594 wiphy->extended_capabilities_len =
595 ARRAY_SIZE(local->ext_capa);
596
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 Bencf0706e82007-05-05 11:45:53 -0700603
Johannes Bergad0e2b52010-06-01 10:19:19 +0200604 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200605 spin_lock_init(&local->filter_lock);
Christian Lamparterf9e124f2013-02-04 17:44:44 +0000606 spin_lock_init(&local->rx_path_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200607 spin_lock_init(&local->queue_stop_reason_lock);
608
Michal Kaziord01a1e62012-06-26 14:37:16 +0200609 INIT_LIST_HEAD(&local->chanctx_list);
610 mutex_init(&local->chanctx_mtx);
611
Johannes Bergc2b13452008-09-11 00:01:55 +0200612 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700613
Johannes Bergf2753dd2009-04-14 10:09:24 +0200614 INIT_WORK(&local->restart_work, ieee80211_restart_work);
615
Simon Wunderlich164eb022013-02-08 18:16:20 +0100616 INIT_WORK(&local->radar_detected_work,
617 ieee80211_dfs_radar_detected_work);
618
Johannes Berg3ac64be2009-08-17 16:16:53 +0200619 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100620 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200621
Kalle Valo520eb822008-12-18 23:35:27 +0200622 INIT_WORK(&local->dynamic_ps_enable_work,
623 ieee80211_dynamic_ps_enable_work);
624 INIT_WORK(&local->dynamic_ps_disable_work,
625 ieee80211_dynamic_ps_disable_work);
626 setup_timer(&local->dynamic_ps_timer,
627 ieee80211_dynamic_ps_timer, (unsigned long) local);
628
Luciano Coelho85a99942011-05-12 16:28:29 +0300629 INIT_WORK(&local->sched_scan_stopped_work,
630 ieee80211_sched_scan_stopped_work);
631
Johannes Berga729cff2011-11-06 14:13:34 +0100632 spin_lock_init(&local->ack_status_lock);
633 idr_init(&local->ack_status_frames);
Johannes Berga729cff2011-11-06 14:13:34 +0100634
Johannes Berga6a67db2010-06-10 10:21:41 +0200635 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100636 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200637 atomic_set(&local->agg_queue_stop[i], 0);
638 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700639 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
640 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700641
642 tasklet_init(&local->tasklet,
643 ieee80211_tasklet_handler,
644 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700645
646 skb_queue_head_init(&local->skb_queue);
647 skb_queue_head_init(&local->skb_queue_unreliable);
648
Johannes Berg8d5c2582015-04-23 12:19:22 +0200649 ieee80211_alloc_led_names(local);
Johannes Bergfe67c912010-11-27 20:02:59 +0100650
Johannes Berg2eb278e2012-06-05 14:28:42 +0200651 ieee80211_roc_setup(local);
Johannes Berg21f83582010-12-18 17:20:47 +0100652
Johannes Berg005e4722012-02-26 11:24:35 +0100653 return &local->hw;
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100654 err_free:
655 wiphy_free(wiphy);
656 return NULL;
Jiri Bencf0706e82007-05-05 11:45:53 -0700657}
Ben Greearad287572014-10-22 12:23:01 -0700658EXPORT_SYMBOL(ieee80211_alloc_hw_nm);
Jiri Bencf0706e82007-05-05 11:45:53 -0700659
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200660static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
Jiri Bencf0706e82007-05-05 11:45:53 -0700661{
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200662 bool have_wep = !(IS_ERR(local->wep_tx_tfm) ||
663 IS_ERR(local->wep_rx_tfm));
Johannes Berg30686bf2015-06-02 21:39:54 +0200664 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE);
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200665 int n_suites = 0, r = 0, w = 0;
666 u32 *suites;
Johannes Berg25e47c12009-04-02 20:14:06 +0200667 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200668 /* keep WEP first, it may be removed below */
Johannes Berg25e47c12009-04-02 20:14:06 +0200669 WLAN_CIPHER_SUITE_WEP40,
670 WLAN_CIPHER_SUITE_WEP104,
671 WLAN_CIPHER_SUITE_TKIP,
672 WLAN_CIPHER_SUITE_CCMP,
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200673 WLAN_CIPHER_SUITE_CCMP_256,
Jouni Malinen00b9cfa2015-01-24 19:52:06 +0200674 WLAN_CIPHER_SUITE_GCMP,
675 WLAN_CIPHER_SUITE_GCMP_256,
Johannes Berg25e47c12009-04-02 20:14:06 +0200676
677 /* keep last -- depends on hw flags! */
Jouni Malinen56c52da2015-01-24 19:52:08 +0200678 WLAN_CIPHER_SUITE_AES_CMAC,
679 WLAN_CIPHER_SUITE_BIP_CMAC_256,
Jouni Malinen8ade5382015-01-24 19:52:09 +0200680 WLAN_CIPHER_SUITE_BIP_GMAC_128,
681 WLAN_CIPHER_SUITE_BIP_GMAC_256,
Johannes Berg25e47c12009-04-02 20:14:06 +0200682 };
Johannes Berg8318d782008-01-24 19:38:38 +0100683
Johannes Berg30686bf2015-06-02 21:39:54 +0200684 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) ||
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100685 local->hw.wiphy->cipher_suites) {
686 /* If the driver advertises, or doesn't support SW crypto,
687 * we only need to remove WEP if necessary.
688 */
689 if (have_wep)
690 return 0;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200691
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100692 /* well if it has _no_ ciphers ... fine */
693 if (!local->hw.wiphy->n_cipher_suites)
694 return 0;
695
696 /* Driver provides cipher suites, but we need to exclude WEP */
697 suites = kmemdup(local->hw.wiphy->cipher_suites,
698 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
699 GFP_KERNEL);
700 if (!suites)
701 return -ENOMEM;
702
703 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
704 u32 suite = local->hw.wiphy->cipher_suites[r];
705
706 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
707 suite == WLAN_CIPHER_SUITE_WEP104)
708 continue;
709 suites[w++] = suite;
710 }
711 } else if (!local->hw.cipher_schemes) {
712 /* If the driver doesn't have cipher schemes, there's nothing
713 * else to do other than assign the (software supported and
714 * perhaps offloaded) cipher suites.
715 */
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200716 local->hw.wiphy->cipher_suites = cipher_suites;
717 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
718
719 if (!have_mfp)
Jouni Malinen8ade5382015-01-24 19:52:09 +0200720 local->hw.wiphy->n_cipher_suites -= 4;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200721
722 if (!have_wep) {
723 local->hw.wiphy->cipher_suites += 2;
724 local->hw.wiphy->n_cipher_suites -= 2;
725 }
726
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100727 /* not dynamically allocated, so just return */
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200728 return 0;
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100729 } else {
730 const struct ieee80211_cipher_scheme *cs;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200731
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100732 cs = local->hw.cipher_schemes;
733
734 /* Driver specifies cipher schemes only (but not cipher suites
735 * including the schemes)
736 *
Jouni Malinen00b9cfa2015-01-24 19:52:06 +0200737 * We start counting ciphers defined by schemes, TKIP, CCMP,
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200738 * CCMP-256, GCMP, and GCMP-256
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200739 */
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200740 n_suites = local->hw.n_cipher_schemes + 5;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200741
742 /* check if we have WEP40 and WEP104 */
743 if (have_wep)
744 n_suites += 2;
745
Jouni Malinen8ade5382015-01-24 19:52:09 +0200746 /* check if we have AES_CMAC, BIP-CMAC-256, BIP-GMAC-128,
747 * BIP-GMAC-256
748 */
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200749 if (have_mfp)
Jouni Malinen8ade5382015-01-24 19:52:09 +0200750 n_suites += 4;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200751
752 suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL);
753 if (!suites)
754 return -ENOMEM;
755
756 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200757 suites[w++] = WLAN_CIPHER_SUITE_CCMP_256;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200758 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
Jouni Malinen00b9cfa2015-01-24 19:52:06 +0200759 suites[w++] = WLAN_CIPHER_SUITE_GCMP;
760 suites[w++] = WLAN_CIPHER_SUITE_GCMP_256;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200761
762 if (have_wep) {
763 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
764 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
765 }
766
Jouni Malinen56c52da2015-01-24 19:52:08 +0200767 if (have_mfp) {
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200768 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
Jouni Malinen56c52da2015-01-24 19:52:08 +0200769 suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256;
Jouni Malinen8ade5382015-01-24 19:52:09 +0200770 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_128;
771 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_256;
Jouni Malinen56c52da2015-01-24 19:52:08 +0200772 }
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200773
Johannes Berge3a55b52015-05-05 16:32:29 +0200774 for (r = 0; r < local->hw.n_cipher_schemes; r++) {
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200775 suites[w++] = cs[r].cipher;
Johannes Berg94c78cb2015-05-20 11:31:47 +0200776 if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) {
777 kfree(suites);
Johannes Berge3a55b52015-05-05 16:32:29 +0200778 return -EINVAL;
Johannes Berg94c78cb2015-05-20 11:31:47 +0200779 }
Johannes Berge3a55b52015-05-05 16:32:29 +0200780 }
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200781 }
782
783 local->hw.wiphy->cipher_suites = suites;
784 local->hw.wiphy->n_cipher_suites = w;
785 local->wiphy_ciphers_allocated = true;
786
787 return 0;
788}
789
790int ieee80211_register_hw(struct ieee80211_hw *hw)
791{
792 struct ieee80211_local *local = hw_to_local(hw);
793 int result, i;
794 enum ieee80211_band band;
795 int channels, max_bitrates;
796 bool supp_ht, supp_vht;
797 netdev_features_t feature_whitelist;
798 struct cfg80211_chan_def dflt_chandef = {};
799
Johannes Berg30686bf2015-06-02 21:39:54 +0200800 if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200801 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
802 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
803 return -EINVAL;
804
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +0200805 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
806 (!local->ops->tdls_channel_switch ||
Arik Nemtsov8a4d32f2014-11-09 18:50:20 +0200807 !local->ops->tdls_cancel_channel_switch ||
808 !local->ops->tdls_recv_channel_switch))
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +0200809 return -EOPNOTSUPP;
810
Larry Finger38bb3e92011-05-05 18:48:47 -0500811#ifdef CONFIG_PM
Johannes Berg964dc9e2013-06-03 17:25:34 +0200812 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
Johannes Bergeecc4802011-05-04 15:37:29 +0200813 return -EINVAL;
Johannes Bergdfb89c52012-06-27 09:23:48 +0200814#endif
Johannes Bergeecc4802011-05-04 15:37:29 +0200815
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200816 if (!local->use_chanctx) {
817 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
818 const struct ieee80211_iface_combination *comb;
819
820 comb = &local->hw.wiphy->iface_combinations[i];
821
822 if (comb->num_different_channels > 1)
823 return -EINVAL;
824 }
Johannes Berg746a3362012-10-22 15:20:53 +0200825 } else {
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200826 /*
827 * WDS is currently prohibited when channel contexts are used
828 * because there's no clear definition of which channel WDS
829 * type interfaces use
830 */
831 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
832 return -EINVAL;
Simon Wunderlich164eb022013-02-08 18:16:20 +0100833
Michal Kazior486cf4c2014-10-10 12:43:23 +0200834 /* DFS is not supported with multi-channel combinations yet */
Simon Wunderlich164eb022013-02-08 18:16:20 +0100835 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
836 const struct ieee80211_iface_combination *comb;
837
838 comb = &local->hw.wiphy->iface_combinations[i];
839
Michal Kazior486cf4c2014-10-10 12:43:23 +0200840 if (comb->radar_detect_widths &&
841 comb->num_different_channels > 1)
Simon Wunderlich164eb022013-02-08 18:16:20 +0100842 return -EINVAL;
843 }
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200844 }
845
Arik Nemtsov72d78722012-05-10 16:18:26 +0300846 /* Only HW csum features are currently compatible with mac80211 */
847 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
Johannes Berg80616c02015-04-14 14:50:41 +0200848 NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA |
849 NETIF_F_GSO_SOFTWARE;
Arik Nemtsov72d78722012-05-10 16:18:26 +0300850 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
851 return -EINVAL;
852
Helmut Schaa78be49e2010-10-02 11:31:55 +0200853 if (hw->max_report_rates == 0)
854 hw->max_report_rates = hw->max_rates;
855
Johannes Berg04ecd252012-09-11 14:34:12 +0200856 local->rx_chains = 1;
857
Johannes Berg8318d782008-01-24 19:38:38 +0100858 /*
859 * generic code guarantees at least one band,
860 * set this very early because much code assumes
861 * that hw.conf.channel is assigned
862 */
Johannes Berg2a519312009-02-10 21:25:55 +0100863 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200864 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200865 supp_ht = false;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000866 supp_vht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100867 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
868 struct ieee80211_supported_band *sband;
869
870 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200871 if (!sband)
872 continue;
Karl Beldanfffa4b12013-04-15 19:04:06 +0200873
874 if (!dflt_chandef.chan) {
875 cfg80211_chandef_create(&dflt_chandef,
876 &sband->channels[0],
877 NL80211_CHAN_NO_HT);
Johannes Berg8318d782008-01-24 19:38:38 +0100878 /* init channel we're on */
Karl Beldanfffa4b12013-04-15 19:04:06 +0200879 if (!local->use_chanctx && !local->_oper_chandef.chan) {
880 local->hw.conf.chandef = dflt_chandef;
881 local->_oper_chandef = dflt_chandef;
882 }
883 local->monitor_chandef = dflt_chandef;
Johannes Berg8318d782008-01-24 19:38:38 +0100884 }
Karl Beldanfffa4b12013-04-15 19:04:06 +0200885
Johannes Bergde95a542009-04-01 11:58:36 +0200886 channels += sband->n_channels;
887
888 if (max_bitrates < sband->n_bitrates)
889 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200890 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000891 supp_vht = supp_vht || sband->vht_cap.vht_supported;
Johannes Berg04ecd252012-09-11 14:34:12 +0200892
893 if (sband->ht_cap.ht_supported)
894 local->rx_chains =
895 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
896 local->rx_chains);
897
898 /* TODO: consider VHT for RX chains, hopefully it's the same */
Johannes Berg8318d782008-01-24 19:38:38 +0100899 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700900
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700901 /* if low-level driver supports AP, we also support VLAN */
Johannes Berg7527a782011-05-13 10:58:57 +0200902 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
903 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
904 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
905 }
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700906
907 /* mac80211 always supports monitor */
Johannes Berg7527a782011-05-13 10:58:57 +0200908 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
909 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
910
Johannes Berg55de9082012-07-26 17:24:39 +0200911 /* mac80211 doesn't support more than one IBSS interface right now */
Johannes Berg8e621fc2011-05-14 01:55:23 +0200912 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
913 const struct ieee80211_iface_combination *c;
914 int j;
915
916 c = &hw->wiphy->iface_combinations[i];
917
Johannes Berg8e621fc2011-05-14 01:55:23 +0200918 for (j = 0; j < c->n_limits; j++)
919 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
920 c->limits[j].max > 1)
921 return -EINVAL;
922 }
923
Johannes Berg5b0ec942014-01-06 16:02:34 +0100924 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
925 sizeof(void *) * channels, GFP_KERNEL);
926 if (!local->int_scan_req)
927 return -ENOMEM;
928
929 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
930 if (!local->hw.wiphy->bands[band])
931 continue;
932 local->int_scan_req->rates[band] = (u32) -1;
933 }
934
Johannes Berg5eb5a522010-08-25 14:34:01 +0200935#ifndef CONFIG_MAC80211_MESH
936 /* mesh depends on Kconfig, but drivers should set it if they want */
937 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
938#endif
939
Javier Cardona1570ca52011-04-07 15:08:35 -0700940 /* if the underlying driver supports mesh, mac80211 will (at least)
941 * provide routing of mesh authentication frames to userspace */
942 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
943 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
944
Johannes Berga621fa42010-08-27 14:26:54 +0300945 /* mac80211 supports control port protocol changing */
946 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
947
Johannes Berg30686bf2015-06-02 21:39:54 +0200948 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) {
Johannes Berg77965c92009-02-18 18:45:06 +0100949 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
Johannes Berg30686bf2015-06-02 21:39:54 +0200950 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) {
Johannes Berg77965c92009-02-18 18:45:06 +0100951 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
andrea merello52512072014-01-19 22:21:49 +0100952 if (hw->max_signal <= 0) {
953 result = -EINVAL;
954 goto fail_wiphy_register;
955 }
956 }
Johannes Berg77965c92009-02-18 18:45:06 +0100957
Johannes Bergde95a542009-04-01 11:58:36 +0200958 /*
959 * Calculate scan IE length -- we need this to alloc
960 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300961 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200962 * information -- SSID is the driver's responsibility.
963 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300964 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
965 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200966 if (supp_ht)
967 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200968
Karl Beldand0e6c212013-03-25 16:26:58 +0100969 if (supp_vht)
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000970 local->scan_ies_len +=
Mahesh Palivelad4950282012-10-10 11:25:40 +0000971 2 + sizeof(struct ieee80211_vht_cap);
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000972
Johannes Bergde95a542009-04-01 11:58:36 +0200973 if (!local->ops->hw_scan) {
974 /* For hw_scan, driver needs to set these up. */
975 local->hw.wiphy->max_scan_ssids = 4;
976 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
977 }
978
979 /*
980 * If the driver supports any scan IEs, then assume the
981 * limit includes the IEs mac80211 will add, otherwise
982 * leave it at zero and let the driver sort it out; we
983 * still pass our IEs to the driver but userspace will
984 * not be allowed to in that case.
985 */
986 if (local->hw.wiphy->max_scan_ie_len)
987 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
988
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200989 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
990 local->hw.n_cipher_schemes));
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300991
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200992 result = ieee80211_init_cipher_suites(local);
993 if (result < 0)
994 goto fail_wiphy_register;
Johannes Berg25e47c12009-04-02 20:14:06 +0200995
Johannes Berg21f83582010-12-18 17:20:47 +0100996 if (!local->ops->remain_on_channel)
997 local->hw.wiphy->max_remain_on_channel_duration = 5000;
Johannes Berga2939112010-12-14 17:54:28 +0100998
Arik Nemtsovdfe018b2011-09-28 14:12:52 +0300999 /* mac80211 based drivers don't support internal TDLS setup */
1000 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
1001 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
1002
Luciano Coelhoe9a21942014-10-08 09:48:36 +03001003 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
Johannes Berg30686bf2015-06-02 21:39:54 +02001004 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA))
Luciano Coelhoe9a21942014-10-08 09:48:36 +03001005 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
1006
Andrei Otcheretianski0d06d9b2014-05-09 14:11:47 +03001007 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
1008
Jiri Bencf0706e82007-05-05 11:45:53 -07001009 result = wiphy_register(local->hw.wiphy);
1010 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +01001011 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -07001012
Johannes Berge2530082008-05-17 00:57:14 +02001013 /*
1014 * We use the number of queues for feature tests (QoS, HT) internally
1015 * so restrict them appropriately.
1016 */
Johannes Berge2530082008-05-17 00:57:14 +02001017 if (hw->queues > IEEE80211_MAX_QUEUES)
1018 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +02001019
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001020 local->workqueue =
Kees Cookd8537542013-07-03 15:04:57 -07001021 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001022 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -07001023 result = -ENOMEM;
1024 goto fail_workqueue;
1025 }
1026
Johannes Bergb306f452007-07-10 19:32:08 +02001027 /*
1028 * The hardware needs headroom for sending the frame,
1029 * and we need some headroom for passing the frame to monitor
1030 * interfaces, but never both at the same time.
1031 */
Jiri Benc33ccad32007-07-18 17:10:44 +02001032 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
Helmut Schaaa2fe8162011-10-11 18:08:54 +02001033 IEEE80211_TX_STATUS_HEADROOM);
Johannes Bergb306f452007-07-10 19:32:08 +02001034
Jiri Bence9f207f2007-05-05 11:46:38 -07001035 debugfs_hw_add(local);
1036
Helmut Schaab4469182010-02-24 14:19:37 +01001037 /*
1038 * if the driver doesn't specify a max listen interval we
1039 * use 5 which should be a safe default
1040 */
Tomas Winklerea95bba2008-07-18 13:53:00 +08001041 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +01001042 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +08001043
1044 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1045
Juuso Oikarinenff616382010-06-09 09:51:52 +03001046 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +03001047
Felix Fietkauba8c3d62015-03-27 21:30:37 +01001048 if (!local->hw.txq_ac_max_pending)
1049 local->hw.txq_ac_max_pending = 64;
1050
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001051 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -04001052 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001053 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
1054 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001055
Karl Beldan24d47302013-11-19 17:12:05 +01001056 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1057
Mohammed Shafi Shajakhanb57e6b52012-02-09 19:59:43 +05301058 ieee80211_led_init(local);
1059
Jiri Bencf0706e82007-05-05 11:45:53 -07001060 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -07001061
Johannes Berg830f9032007-10-28 14:51:05 +01001062 result = ieee80211_init_rate_ctrl_alg(local,
1063 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -07001064 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001065 wiphy_debug(local->hw.wiphy,
1066 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001067 goto fail_rate;
1068 }
1069
Johannes Berg8dffff22008-12-09 00:10:30 +01001070 /* add one default STA interface if supported */
Ben Greeare27513f2014-10-22 12:23:03 -07001071 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
Johannes Berg30686bf2015-06-02 21:39:54 +02001072 !ieee80211_hw_check(hw, NO_AUTO_VIF)) {
Tom Gundersen6bab2e192015-03-18 11:13:39 +01001073 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
Johannes Berg8dffff22008-12-09 00:10:30 +01001074 NL80211_IFTYPE_STATION, NULL);
1075 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001076 wiphy_warn(local->hw.wiphy,
1077 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +01001078 }
Jiri Bencf0706e82007-05-05 11:45:53 -07001079
Jiri Bencf0706e82007-05-05 11:45:53 -07001080 rtnl_unlock();
1081
Johannes Berg10f644a2009-04-16 13:17:25 +02001082 local->network_latency_notifier.notifier_call =
1083 ieee80211_max_network_latency;
1084 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
1085 &local->network_latency_notifier);
Johannes Berg54330bf2015-01-21 13:52:24 +01001086 if (result)
Johannes Berg10f644a2009-04-16 13:17:25 +02001087 goto fail_pm_qos;
Johannes Berg10f644a2009-04-16 13:17:25 +02001088
John W. Linville26b36cf2010-06-04 14:25:44 -04001089#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001090 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1091 result = register_inetaddr_notifier(&local->ifa_notifier);
1092 if (result)
1093 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -04001094#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001095
Johannes Berga65240c2013-01-14 15:14:34 +01001096#if IS_ENABLED(CONFIG_IPV6)
1097 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1098 result = register_inet6addr_notifier(&local->ifa6_notifier);
1099 if (result)
1100 goto fail_ifa6;
1101#endif
1102
Jiri Bencf0706e82007-05-05 11:45:53 -07001103 return 0;
1104
Johannes Berga65240c2013-01-14 15:14:34 +01001105#if IS_ENABLED(CONFIG_IPV6)
1106 fail_ifa6:
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001107#ifdef CONFIG_INET
Johannes Berga65240c2013-01-14 15:14:34 +01001108 unregister_inetaddr_notifier(&local->ifa_notifier);
1109#endif
1110#endif
1111#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001112 fail_ifa:
1113 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1114 &local->network_latency_notifier);
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001115#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001116 fail_pm_qos:
Johannes Berg54330bf2015-01-21 13:52:24 +01001117 rtnl_lock();
1118 rate_control_deinitialize(local);
Johannes Berg10f644a2009-04-16 13:17:25 +02001119 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +02001120 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -07001121 rtnl_unlock();
Johannes Berg54330bf2015-01-21 13:52:24 +01001122 ieee80211_led_exit(local);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001123 ieee80211_wep_free(local);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001124 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +02001125 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -07001126 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +02001127 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001128 if (local->wiphy_ciphers_allocated)
1129 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +02001130 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001131 return result;
1132}
1133EXPORT_SYMBOL(ieee80211_register_hw);
1134
Johannes Berg06d181a2014-02-04 20:51:09 +01001135void ieee80211_napi_add(struct ieee80211_hw *hw, struct napi_struct *napi,
1136 struct net_device *napi_dev,
1137 int (*poll)(struct napi_struct *, int),
1138 int weight)
1139{
1140 struct ieee80211_local *local = hw_to_local(hw);
1141
1142 netif_napi_add(napi_dev, napi, poll, weight);
1143 local->napi = napi;
1144}
1145EXPORT_SYMBOL_GPL(ieee80211_napi_add);
1146
Jiri Bencf0706e82007-05-05 11:45:53 -07001147void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1148{
1149 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001150
1151 tasklet_kill(&local->tx_pending_tasklet);
1152 tasklet_kill(&local->tasklet);
1153
Johannes Berg10f644a2009-04-16 13:17:25 +02001154 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1155 &local->network_latency_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001156#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001157 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001158#endif
Johannes Berga65240c2013-01-14 15:14:34 +01001159#if IS_ENABLED(CONFIG_IPV6)
1160 unregister_inet6addr_notifier(&local->ifa6_notifier);
1161#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001162
Jiri Bencf0706e82007-05-05 11:45:53 -07001163 rtnl_lock();
1164
Johannes Berg79010422007-09-18 17:29:21 -04001165 /*
1166 * At this point, interface list manipulations are fine
1167 * because the driver cannot be handing us frames any
1168 * more and the tasklet is killed.
1169 */
Johannes Berg75636522008-07-09 14:40:35 +02001170 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +02001171
Jiri Bencf0706e82007-05-05 11:45:53 -07001172 rtnl_unlock();
1173
Christian Lamparter258086a2010-08-22 23:48:25 +02001174 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001175 cancel_work_sync(&local->reconfig_filter);
Johannes Berg18db5942013-11-06 10:34:36 +01001176 flush_work(&local->sched_scan_stopped_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001177
Jiri Bencf0706e82007-05-05 11:45:53 -07001178 ieee80211_clear_tx_pending(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001179 rate_control_deinitialize(local);
1180
Joe Perchesf64f9e72009-11-29 16:55:45 -08001181 if (skb_queue_len(&local->skb_queue) ||
1182 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001183 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001184 skb_queue_purge(&local->skb_queue);
1185 skb_queue_purge(&local->skb_queue_unreliable);
1186
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001187 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001188 wiphy_unregister(local->hw.wiphy);
1189 ieee80211_wep_free(local);
1190 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +02001191 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001192}
1193EXPORT_SYMBOL(ieee80211_unregister_hw);
1194
Johannes Berga729cff2011-11-06 14:13:34 +01001195static int ieee80211_free_ack_frame(int id, void *p, void *data)
1196{
1197 WARN_ONCE(1, "Have pending ack frames!\n");
1198 kfree_skb(p);
1199 return 0;
1200}
1201
Jiri Bencf0706e82007-05-05 11:45:53 -07001202void ieee80211_free_hw(struct ieee80211_hw *hw)
1203{
1204 struct ieee80211_local *local = hw_to_local(hw);
1205
Johannes Bergc771c9d2009-01-23 22:54:03 +01001206 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +02001207 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +01001208
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001209 if (local->wiphy_ciphers_allocated)
1210 kfree(local->hw.wiphy->cipher_suites);
1211
Johannes Berga729cff2011-11-06 14:13:34 +01001212 idr_for_each(&local->ack_status_frames,
1213 ieee80211_free_ack_frame, NULL);
1214 idr_destroy(&local->ack_status_frames);
1215
Johannes Berg54330bf2015-01-21 13:52:24 +01001216 sta_info_stop(local);
1217
Johannes Berg8d5c2582015-04-23 12:19:22 +02001218 ieee80211_free_led_names(local);
1219
Jiri Bencf0706e82007-05-05 11:45:53 -07001220 wiphy_free(local->hw.wiphy);
1221}
1222EXPORT_SYMBOL(ieee80211_free_hw);
1223
Jiri Bencf0706e82007-05-05 11:45:53 -07001224static int __init ieee80211_init(void)
1225{
1226 struct sk_buff *skb;
1227 int ret;
1228
Johannes Berge039fa42008-05-15 12:55:29 +02001229 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1230 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +02001231 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -07001232
Felix Fietkaucccf1292008-10-05 18:07:45 +02001233 ret = rc80211_minstrel_init();
1234 if (ret)
1235 return ret;
1236
Felix Fietkauec8aa662010-05-13 16:48:03 +02001237 ret = rc80211_minstrel_ht_init();
1238 if (ret)
1239 goto err_minstrel;
1240
Johannes Berg47846c92009-11-25 17:46:19 +01001241 ret = ieee80211_iface_init();
1242 if (ret)
1243 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -07001244
Jiri Bencf0706e82007-05-05 11:45:53 -07001245 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +01001246 err_netdev:
Felix Fietkauec8aa662010-05-13 16:48:03 +02001247 rc80211_minstrel_ht_exit();
1248 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +01001249 rc80211_minstrel_exit();
1250
1251 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -07001252}
1253
Jiri Bencf0706e82007-05-05 11:45:53 -07001254static void __exit ieee80211_exit(void)
1255{
Felix Fietkauec8aa662010-05-13 16:48:03 +02001256 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +02001257 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +01001258
Johannes Bergbf7cd942013-02-15 14:40:31 +01001259 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001260
Johannes Berg47846c92009-11-25 17:46:19 +01001261 ieee80211_iface_exit();
Johannes Bergd07c7cf2011-05-14 11:04:51 +02001262
1263 rcu_barrier();
Jiri Bencf0706e82007-05-05 11:45:53 -07001264}
1265
1266
Johannes Bergca9938f2007-09-11 12:50:32 +02001267subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -07001268module_exit(ieee80211_exit);
1269
1270MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1271MODULE_LICENSE("GPL");