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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>
Juuso Oikarinen68542962010-06-09 13:43:26 +030023#include <linux/inetdevice.h>
Eric W. Biederman881d9662007-09-17 11:56:21 -070024#include <net/net_namespace.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070025#include <net/cfg80211.h>
Johannes Berga65240c2013-01-14 15:14:34 +010026#include <net/addrconf.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070027
Jiri Bencf0706e82007-05-05 11:45:53 -070028#include "ieee80211_i.h"
Johannes Berg24487982009-04-23 18:52:52 +020029#include "driver-ops.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040030#include "rate.h"
Luis Carlos Cobof7a92142008-02-23 15:17:18 +010031#include "mesh.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070032#include "wep.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040033#include "led.h"
Jiri Bence9f207f2007-05-05 11:46:38 -070034#include "debugfs.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070035
Johannes Berg0d143fe2008-09-11 00:01:59 +020036void ieee80211_configure_filter(struct ieee80211_local *local)
Johannes Berg4150c572007-09-17 01:29:23 -040037{
Johannes Berg3ac64be2009-08-17 16:16:53 +020038 u64 mc;
Johannes Berg4150c572007-09-17 01:29:23 -040039 unsigned int changed_flags;
40 unsigned int new_flags = 0;
41
Johannes Berg53918992007-09-26 15:19:47 +020042 if (atomic_read(&local->iff_allmultis))
Johannes Berg4150c572007-09-17 01:29:23 -040043 new_flags |= FIF_ALLMULTI;
44
Ben Greear8a690672012-04-17 10:54:16 -070045 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
46 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
Michael Wu8cc9a732008-01-31 19:48:23 +010047 new_flags |= FIF_BCN_PRBRESP_PROMISC;
48
Johannes Berg7be50862010-10-13 12:06:24 +020049 if (local->fif_probe_req || local->probe_req_reg)
50 new_flags |= FIF_PROBE_REQ;
51
Michael Wu8cc9a732008-01-31 19:48:23 +010052 if (local->fif_fcsfail)
53 new_flags |= FIF_FCSFAIL;
54
55 if (local->fif_plcpfail)
56 new_flags |= FIF_PLCPFAIL;
57
58 if (local->fif_control)
59 new_flags |= FIF_CONTROL;
60
61 if (local->fif_other_bss)
62 new_flags |= FIF_OTHER_BSS;
Johannes Berg4150c572007-09-17 01:29:23 -040063
Igor Perminove3b90ca2009-08-04 16:48:51 +040064 if (local->fif_pspoll)
65 new_flags |= FIF_PSPOLL;
66
Johannes Berg3ac64be2009-08-17 16:16:53 +020067 spin_lock_bh(&local->filter_lock);
Johannes Berg4150c572007-09-17 01:29:23 -040068 changed_flags = local->filter_flags ^ new_flags;
69
Jiri Pirko22bedad32010-04-01 21:22:57 +000070 mc = drv_prepare_multicast(local, &local->mc_list);
Johannes Berg3ac64be2009-08-17 16:16:53 +020071 spin_unlock_bh(&local->filter_lock);
72
Johannes Berg4150c572007-09-17 01:29:23 -040073 /* be a bit nasty */
74 new_flags |= (1<<31);
75
Johannes Berg3ac64be2009-08-17 16:16:53 +020076 drv_configure_filter(local, changed_flags, &new_flags, mc);
Johannes Berg4150c572007-09-17 01:29:23 -040077
78 WARN_ON(new_flags & (1<<31));
79
80 local->filter_flags = new_flags & ~(1<<31);
81}
82
Johannes Berg3ac64be2009-08-17 16:16:53 +020083static void ieee80211_reconfig_filter(struct work_struct *work)
84{
85 struct ieee80211_local *local =
86 container_of(work, struct ieee80211_local, reconfig_filter);
87
88 ieee80211_configure_filter(local);
89}
90
Johannes Berg55de9082012-07-26 17:24:39 +020091static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
Johannes Bergb2c258f2007-07-27 15:43:23 +020092{
Johannes Berg1ea6f9c2012-10-24 10:59:25 +020093 struct ieee80211_sub_if_data *sdata;
Karl Beldan675a0b02013-03-25 16:26:57 +010094 struct cfg80211_chan_def chandef = {};
Johannes Berg55de9082012-07-26 17:24:39 +020095 u32 changed = 0;
Johannes Berge8975582008-10-09 12:18:51 +020096 int power;
Felix Fietkauffd27782010-07-29 17:36:43 +020097 u32 offchannel_flag;
Johannes Bergb2c258f2007-07-27 15:43:23 +020098
Felix Fietkauffd27782010-07-29 17:36:43 +020099 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Karl Beldan675a0b02013-03-25 16:26:57 +0100100
Simon Wunderlich7ca15a02013-07-08 16:55:56 +0200101 if (local->scan_chandef.chan) {
102 chandef = local->scan_chandef;
Ben Greearb23b0252011-02-04 11:54:17 -0800103 } else if (local->tmp_channel) {
Karl Beldan675a0b02013-03-25 16:26:57 +0100104 chandef.chan = local->tmp_channel;
105 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
106 chandef.center_freq1 = chandef.chan->center_freq;
107 } else
108 chandef = local->_oper_chandef;
Ben Greearb23b0252011-02-04 11:54:17 -0800109
Karl Beldan675a0b02013-03-25 16:26:57 +0100110 WARN(!cfg80211_chandef_valid(&chandef),
111 "control:%d MHz width:%d center: %d/%d MHz",
112 chandef.chan->center_freq, chandef.width,
113 chandef.center_freq1, chandef.center_freq2);
114
115 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
Ben Greearb23b0252011-02-04 11:54:17 -0800116 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
117 else
118 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
119
Felix Fietkauffd27782010-07-29 17:36:43 +0200120 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200121
Karl Beldan675a0b02013-03-25 16:26:57 +0100122 if (offchannel_flag ||
123 !cfg80211_chandef_identical(&local->hw.conf.chandef,
124 &local->_oper_chandef)) {
125 local->hw.conf.chandef = chandef;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200126 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
127 }
Johannes Berg8318d782008-01-24 19:38:38 +0100128
Johannes Berg0f782312009-12-01 13:37:02 +0100129 if (!conf_is_ht(&local->hw.conf)) {
130 /*
131 * mac80211.h documents that this is only valid
132 * when the channel is set to an HT type, and
133 * that otherwise STATIC is used.
134 */
135 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
136 } else if (local->hw.conf.smps_mode != local->smps_mode) {
137 local->hw.conf.smps_mode = local->smps_mode;
138 changed |= IEEE80211_CONF_CHANGE_SMPS;
139 }
140
Simon Wunderlich0430c882013-07-08 16:55:55 +0200141 power = ieee80211_chandef_max_power(&chandef);
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530142
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200143 rcu_read_lock();
144 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
145 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
146 continue;
Felix Fietkau764152f2014-04-10 15:06:48 +0200147 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
148 continue;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200149 power = min(power, sdata->vif.bss_conf.txpower);
150 }
151 rcu_read_unlock();
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530152
Johannes Berge8975582008-10-09 12:18:51 +0200153 if (local->hw.conf.power_level != power) {
154 changed |= IEEE80211_CONF_CHANGE_POWER;
155 local->hw.conf.power_level = power;
156 }
Johannes Berg8318d782008-01-24 19:38:38 +0100157
Johannes Berg55de9082012-07-26 17:24:39 +0200158 return changed;
159}
160
161int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
162{
163 int ret = 0;
164
165 might_sleep();
166
167 if (!local->use_chanctx)
168 changed |= ieee80211_hw_conf_chan(local);
169 else
170 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
171 IEEE80211_CONF_CHANGE_POWER);
172
Johannes Berge8975582008-10-09 12:18:51 +0200173 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200174 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200175 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800176 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200177 * HW reconfiguration should never fail, the driver has told
178 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800179 *
180 * Current status:
181 * rfkill is not integrated with mac80211 and a
182 * configuration command can thus fail if hardware rfkill
183 * is enabled
184 *
185 * FIXME: integrate rfkill with mac80211 and then add this
186 * WARN_ON() back
187 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200188 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800189 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200190 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200191
192 return ret;
193}
194
Johannes Berg471b3ef2007-12-28 14:32:58 +0100195void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
196 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200197{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100198 struct ieee80211_local *local = sdata->local;
199
Felix Fietkau990baec2014-04-09 00:08:01 +0200200 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
Johannes Berg471b3ef2007-12-28 14:32:58 +0100201 return;
202
Johannes Berg12375ef2009-11-25 20:30:31 +0100203 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200204}
205
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200206u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200207{
Johannes Bergbda39332008-10-11 01:51:51 +0200208 sdata->vif.bss_conf.use_cts_prot = false;
209 sdata->vif.bss_conf.use_short_preamble = false;
210 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200211 return BSS_CHANGED_ERP_CTS_PROT |
212 BSS_CHANGED_ERP_PREAMBLE |
213 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200214}
215
Jiri Bencf0706e82007-05-05 11:45:53 -0700216static void ieee80211_tasklet_handler(unsigned long data)
217{
218 struct ieee80211_local *local = (struct ieee80211_local *) data;
219 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700220
221 while ((skb = skb_dequeue(&local->skb_queue)) ||
222 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
223 switch (skb->pkt_type) {
224 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100225 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700226 * netstack. */
227 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100228 ieee80211_rx(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700229 break;
230 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700231 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100232 ieee80211_tx_status(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700233 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200234 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600235 WARN(1, "mac80211: Packet is of unknown type %d\n",
236 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700237 dev_kfree_skb(skb);
238 break;
239 }
240 }
241}
242
Johannes Bergf2753dd2009-04-14 10:09:24 +0200243static void ieee80211_restart_work(struct work_struct *work)
244{
245 struct ieee80211_local *local =
246 container_of(work, struct ieee80211_local, restart_work);
Michal Kaziorab499db2015-05-22 10:22:40 +0200247 struct ieee80211_sub_if_data *sdata;
Johannes Bergf2753dd2009-04-14 10:09:24 +0200248
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200249 /* wait for scan work complete */
250 flush_workqueue(local->workqueue);
251
David Spinadeld43c6b62013-12-08 21:48:57 +0200252 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
253 "%s called with hardware scan in progress\n", __func__);
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200254
Johannes Bergf2753dd2009-04-14 10:09:24 +0200255 rtnl_lock();
Michal Kaziorab499db2015-05-22 10:22:40 +0200256 list_for_each_entry(sdata, &local->interfaces, list)
257 flush_delayed_work(&sdata->dec_tailroom_needed_wk);
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200258 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200259 ieee80211_reconfig(local);
260 rtnl_unlock();
261}
262
263void ieee80211_restart_hw(struct ieee80211_hw *hw)
264{
265 struct ieee80211_local *local = hw_to_local(hw);
266
Johannes Bergb5878a22010-04-07 16:48:40 +0200267 trace_api_restart_hw(local);
268
Michael Bueschb196d032011-03-07 13:09:12 +0100269 wiphy_info(hw->wiphy,
270 "Hardware restart was requested\n");
271
John W. Linville18145c62010-08-30 15:12:02 -0400272 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Berg445ea4e2013-02-13 12:25:28 +0100273 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300274 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
275 false);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200276
Arik Nemtsov04800ad2012-06-06 11:25:02 +0300277 /*
278 * Stop all Rx during the reconfig. We don't want state changes
279 * or driver callbacks while this is in progress.
280 */
281 local->in_reconfig = true;
282 barrier();
283
Eliad Peller43d6df02015-10-25 10:59:35 +0200284 queue_work(system_freezable_wq, &local->restart_work);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200285}
286EXPORT_SYMBOL(ieee80211_restart_hw);
287
John W. Linville26b36cf2010-06-04 14:25:44 -0400288#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300289static int ieee80211_ifa_changed(struct notifier_block *nb,
290 unsigned long data, void *arg)
291{
292 struct in_ifaddr *ifa = arg;
293 struct ieee80211_local *local =
294 container_of(nb, struct ieee80211_local,
295 ifa_notifier);
296 struct net_device *ndev = ifa->ifa_dev->dev;
297 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300298 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300299 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300300 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300301 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300302 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300303
304 /* Make sure it's our interface that got changed */
305 if (!wdev)
306 return NOTIFY_DONE;
307
308 if (wdev->wiphy != local->hw.wiphy)
309 return NOTIFY_DONE;
310
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300311 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300312 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300313
314 /* ARP filtering is only supported in managed mode */
315 if (sdata->vif.type != NL80211_IFTYPE_STATION)
316 return NOTIFY_DONE;
317
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000318 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300319 if (!idev)
320 return NOTIFY_DONE;
321
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300322 ifmgd = &sdata->u.mgd;
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200323 sdata_lock(sdata);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300324
325 /* Copy the addresses to the bss_conf list */
326 ifa = idev->ifa_list;
Johannes Berg0f19b412013-01-14 16:39:07 +0100327 while (ifa) {
328 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
329 bss_conf->arp_addr_list[c] = ifa->ifa_address;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300330 ifa = ifa->ifa_next;
331 c++;
332 }
333
Juuso Oikarinen68542962010-06-09 13:43:26 +0300334 bss_conf->arp_addr_cnt = c;
335
Eliad Peller53d69c32011-12-12 15:30:04 +0200336 /* Configure driver only if associated (which also implies it is up) */
Johannes Berg0f19b412013-01-14 16:39:07 +0100337 if (ifmgd->associated)
Juuso Oikarinen68542962010-06-09 13:43:26 +0300338 ieee80211_bss_info_change_notify(sdata,
339 BSS_CHANGED_ARP_FILTER);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300340
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200341 sdata_unlock(sdata);
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300342
Zhao, Gang8bd811a2014-04-21 12:53:05 +0800343 return NOTIFY_OK;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300344}
John W. Linville26b36cf2010-06-04 14:25:44 -0400345#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300346
Johannes Berga65240c2013-01-14 15:14:34 +0100347#if IS_ENABLED(CONFIG_IPV6)
348static int ieee80211_ifa6_changed(struct notifier_block *nb,
349 unsigned long data, void *arg)
350{
351 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
352 struct inet6_dev *idev = ifa->idev;
353 struct net_device *ndev = ifa->idev->dev;
354 struct ieee80211_local *local =
355 container_of(nb, struct ieee80211_local, ifa6_notifier);
356 struct wireless_dev *wdev = ndev->ieee80211_ptr;
357 struct ieee80211_sub_if_data *sdata;
358
359 /* Make sure it's our interface that got changed */
360 if (!wdev || wdev->wiphy != local->hw.wiphy)
361 return NOTIFY_DONE;
362
363 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
364
365 /*
366 * For now only support station mode. This is mostly because
367 * doing AP would have to handle AP_VLAN in some way ...
368 */
369 if (sdata->vif.type != NL80211_IFTYPE_STATION)
370 return NOTIFY_DONE;
371
372 drv_ipv6_addr_change(local, sdata, idev);
373
Zhao, Gang8bd811a2014-04-21 12:53:05 +0800374 return NOTIFY_OK;
Johannes Berga65240c2013-01-14 15:14:34 +0100375}
376#endif
377
Johannes Berg2e161f72010-08-12 15:38:38 +0200378/* There isn't a lot of sense in it, but you can transmit anything you like */
379static const struct ieee80211_txrx_stypes
380ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
381 [NL80211_IFTYPE_ADHOC] = {
382 .tx = 0xffff,
Will Hawkins3bfda622012-06-19 17:59:14 -0400383 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
384 BIT(IEEE80211_STYPE_AUTH >> 4) |
Antonio Quartulli41e31b82012-11-30 00:18:12 +0100385 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
386 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
Johannes Berg2e161f72010-08-12 15:38:38 +0200387 },
388 [NL80211_IFTYPE_STATION] = {
389 .tx = 0xffff,
390 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
391 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
392 },
393 [NL80211_IFTYPE_AP] = {
394 .tx = 0xffff,
395 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
396 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
397 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
398 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
399 BIT(IEEE80211_STYPE_AUTH >> 4) |
400 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
401 BIT(IEEE80211_STYPE_ACTION >> 4),
402 },
403 [NL80211_IFTYPE_AP_VLAN] = {
404 /* copy AP */
405 .tx = 0xffff,
406 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
407 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
408 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
409 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
410 BIT(IEEE80211_STYPE_AUTH >> 4) |
411 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
412 BIT(IEEE80211_STYPE_ACTION >> 4),
413 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200414 [NL80211_IFTYPE_P2P_CLIENT] = {
415 .tx = 0xffff,
416 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
417 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
418 },
419 [NL80211_IFTYPE_P2P_GO] = {
420 .tx = 0xffff,
421 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
422 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
423 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
424 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
425 BIT(IEEE80211_STYPE_AUTH >> 4) |
426 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
427 BIT(IEEE80211_STYPE_ACTION >> 4),
428 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800429 [NL80211_IFTYPE_MESH_POINT] = {
430 .tx = 0xffff,
Javier Cardona71839122011-04-07 15:08:31 -0700431 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
432 BIT(IEEE80211_STYPE_AUTH >> 4) |
433 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Javier Cardonac7108a72010-12-16 17:37:50 -0800434 },
Johannes Bergf142c6b2012-06-18 20:07:15 +0200435 [NL80211_IFTYPE_P2P_DEVICE] = {
436 .tx = 0xffff,
437 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
438 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
439 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200440};
441
Ben Greearef96a8422011-11-18 11:32:00 -0800442static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
443 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
444 IEEE80211_HT_AMPDU_PARM_DENSITY,
445
446 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
447 IEEE80211_HT_CAP_MAX_AMSDU |
Ben Greearbc0784d2012-12-12 16:56:20 -0800448 IEEE80211_HT_CAP_SGI_20 |
Pawel Kulakowskia2e74952014-04-01 07:13:21 +0200449 IEEE80211_HT_CAP_SGI_40 |
Jouni Malinen9a07bf52014-04-15 19:13:56 +0300450 IEEE80211_HT_CAP_LDPC_CODING |
451 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
Ben Greearef96a8422011-11-18 11:32:00 -0800452 .mcs = {
453 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
454 0xff, 0xff, 0xff, 0xff, 0xff, },
455 },
456};
457
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100458static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
459 .vht_cap_info =
460 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
461 IEEE80211_VHT_CAP_SHORT_GI_80 |
462 IEEE80211_VHT_CAP_SHORT_GI_160 |
463 IEEE80211_VHT_CAP_RXSTBC_1 |
464 IEEE80211_VHT_CAP_RXSTBC_2 |
465 IEEE80211_VHT_CAP_RXSTBC_3 |
466 IEEE80211_VHT_CAP_RXSTBC_4 |
467 IEEE80211_VHT_CAP_TXSTBC |
468 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
469 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
470 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
471 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
472 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
473 .supp_mcs = {
474 .rx_mcs_map = cpu_to_le16(~0),
475 .tx_mcs_map = cpu_to_le16(~0),
476 },
477};
478
Ben Greearad287572014-10-22 12:23:01 -0700479struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
480 const struct ieee80211_ops *ops,
481 const char *requested_name)
Jiri Bencf0706e82007-05-05 11:45:53 -0700482{
Jiri Bencf0706e82007-05-05 11:45:53 -0700483 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100484 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700485 struct wiphy *wiphy;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200486 bool use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700487
Johannes Bergc0af0732012-07-26 14:42:10 +0200488 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
489 !ops->add_interface || !ops->remove_interface ||
490 !ops->configure_filter))
491 return NULL;
492
Johannes Bergf09603a2012-01-20 13:55:21 +0100493 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
494 return NULL;
495
Johannes Berge269d862012-07-26 14:46:32 +0200496 /* check all or no channel context operations exist */
497 i = !!ops->add_chanctx + !!ops->remove_chanctx +
498 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
499 !!ops->unassign_vif_chanctx;
500 if (WARN_ON(i != 0 && i != 5))
501 return NULL;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200502 use_chanctx = i == 5;
Johannes Berge269d862012-07-26 14:46:32 +0200503
Jiri Bencf0706e82007-05-05 11:45:53 -0700504 /* Ensure 32-byte alignment of our private data and hw private data.
505 * We use the wiphy priv data for both our ieee80211_local and for
506 * the driver's private data
507 *
508 * In memory it'll be like this:
509 *
510 * +-------------------------+
511 * | struct wiphy |
512 * +-------------------------+
513 * | struct ieee80211_local |
514 * +-------------------------+
515 * | driver's private data |
516 * +-------------------------+
517 *
518 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000519 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700520
Ben Greearad287572014-10-22 12:23:01 -0700521 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
Jiri Bencf0706e82007-05-05 11:45:53 -0700522
523 if (!wiphy)
524 return NULL;
525
Johannes Berg2e161f72010-08-12 15:38:38 +0200526 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
527
Johannes Berg207aba62010-12-10 17:10:44 +0100528 wiphy->privid = mac80211_wiphy_privid;
529
Johannes Berg9bc383d2009-11-19 11:55:19 +0100530 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
531 WIPHY_FLAG_4ADDR_AP |
Johannes Bergee971922011-11-04 11:18:18 +0100532 WIPHY_FLAG_4ADDR_STATION |
Johannes Berg7c4ef712011-11-18 15:33:48 +0100533 WIPHY_FLAG_REPORTS_OBSS |
Johannes Berg81ddbb52012-03-26 18:47:18 +0200534 WIPHY_FLAG_OFFCHAN_TX;
535
536 if (ops->remain_on_channel)
537 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
Johannes Berg207aba62010-12-10 17:10:44 +0100538
Johannes Bergb2922192012-10-12 10:55:53 +0200539 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
540 NL80211_FEATURE_SAE |
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200541 NL80211_FEATURE_HT_IBSS |
Thomas Pedersena6dad6a2013-03-04 13:06:12 -0800542 NL80211_FEATURE_VIF_TXPOWER |
Ben Greearb5dfae02014-10-22 12:23:06 -0700543 NL80211_FEATURE_MAC_ON_CREATE |
Ayala Beker44674d92015-09-23 10:41:27 +0200544 NL80211_FEATURE_USERSPACE_MPM |
545 NL80211_FEATURE_FULL_AP_CLIENT_STATE;
Johannes Berga729cff2011-11-06 14:13:34 +0100546
Sam Lefflercd2bb512012-10-11 21:03:35 -0700547 if (!ops->hw_scan)
Antonio Quartulli5c95b942012-10-16 08:39:22 +0200548 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
549 NL80211_FEATURE_AP_SCAN;
550
Sam Lefflercd2bb512012-10-11 21:03:35 -0700551
Johannes Berg207aba62010-12-10 17:10:44 +0100552 if (!ops->set_key)
553 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200554
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100555 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700556
557 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200558
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100559 if (sta_info_init(local))
560 goto err_free;
561
Jiri Bencf0706e82007-05-05 11:45:53 -0700562 local->hw.wiphy = wiphy;
563
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000564 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700565
566 local->ops = ops;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200567 local->use_chanctx = use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700568
Johannes Berge6a98542008-10-21 12:40:02 +0200569 /* set up some defaults */
570 local->hw.queues = 1;
571 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200572 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200573 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Helmut Schaa39e68712011-08-05 11:46:19 +0200574 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200575 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200576 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
577 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergac55d2f2012-05-10 09:09:10 +0200578 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
579 IEEE80211_RADIOTAP_MCS_HAVE_GI |
580 IEEE80211_RADIOTAP_MCS_HAVE_BW;
Johannes Berg51648922012-11-22 23:00:18 +0100581 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
582 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
Alexander Bondar219c3862013-01-22 16:52:23 +0200583 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
584 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200585 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
Ben Greearef96a8422011-11-18 11:32:00 -0800586 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100587 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
Jiri Bencf0706e82007-05-05 11:45:53 -0700588
Luciano Coelhoe9a21942014-10-08 09:48:36 +0300589 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
590
591 wiphy->extended_capabilities = local->ext_capa;
592 wiphy->extended_capabilities_mask = local->ext_capa;
593 wiphy->extended_capabilities_len =
594 ARRAY_SIZE(local->ext_capa);
595
Johannes Berg79010422007-09-18 17:29:21 -0400596 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000597
598 __hw_addr_init(&local->mc_list);
599
Johannes Bergc771c9d2009-01-23 22:54:03 +0100600 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200601 mutex_init(&local->mtx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700602
Johannes Bergad0e2b52010-06-01 10:19:19 +0200603 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200604 spin_lock_init(&local->filter_lock);
Christian Lamparterf9e124f2013-02-04 17:44:44 +0000605 spin_lock_init(&local->rx_path_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200606 spin_lock_init(&local->queue_stop_reason_lock);
607
Michal Kaziord01a1e62012-06-26 14:37:16 +0200608 INIT_LIST_HEAD(&local->chanctx_list);
609 mutex_init(&local->chanctx_mtx);
610
Johannes Bergc2b13452008-09-11 00:01:55 +0200611 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700612
Johannes Bergf2753dd2009-04-14 10:09:24 +0200613 INIT_WORK(&local->restart_work, ieee80211_restart_work);
614
Simon Wunderlich164eb022013-02-08 18:16:20 +0100615 INIT_WORK(&local->radar_detected_work,
616 ieee80211_dfs_radar_detected_work);
617
Johannes Berg3ac64be2009-08-17 16:16:53 +0200618 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100619 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200620
Kalle Valo520eb822008-12-18 23:35:27 +0200621 INIT_WORK(&local->dynamic_ps_enable_work,
622 ieee80211_dynamic_ps_enable_work);
623 INIT_WORK(&local->dynamic_ps_disable_work,
624 ieee80211_dynamic_ps_disable_work);
625 setup_timer(&local->dynamic_ps_timer,
626 ieee80211_dynamic_ps_timer, (unsigned long) local);
627
Luciano Coelho85a99942011-05-12 16:28:29 +0300628 INIT_WORK(&local->sched_scan_stopped_work,
629 ieee80211_sched_scan_stopped_work);
630
Arik Nemtsovc8ff71e2015-07-08 15:41:45 +0300631 INIT_WORK(&local->tdls_chsw_work, ieee80211_tdls_chsw_work);
632
Johannes Berga729cff2011-11-06 14:13:34 +0100633 spin_lock_init(&local->ack_status_lock);
634 idr_init(&local->ack_status_frames);
Johannes Berga729cff2011-11-06 14:13:34 +0100635
Johannes Berga6a67db2010-06-10 10:21:41 +0200636 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100637 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200638 atomic_set(&local->agg_queue_stop[i], 0);
639 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700640 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
641 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700642
643 tasklet_init(&local->tasklet,
644 ieee80211_tasklet_handler,
645 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700646
647 skb_queue_head_init(&local->skb_queue);
648 skb_queue_head_init(&local->skb_queue_unreliable);
Arik Nemtsovc8ff71e2015-07-08 15:41:45 +0300649 skb_queue_head_init(&local->skb_queue_tdls_chsw);
Jiri Bencf0706e82007-05-05 11:45:53 -0700650
Johannes Berg8d5c2582015-04-23 12:19:22 +0200651 ieee80211_alloc_led_names(local);
Johannes Bergfe67c912010-11-27 20:02:59 +0100652
Johannes Berg2eb278e2012-06-05 14:28:42 +0200653 ieee80211_roc_setup(local);
Johannes Berg21f83582010-12-18 17:20:47 +0100654
Johannes Berg005e4722012-02-26 11:24:35 +0100655 return &local->hw;
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100656 err_free:
657 wiphy_free(wiphy);
658 return NULL;
Jiri Bencf0706e82007-05-05 11:45:53 -0700659}
Ben Greearad287572014-10-22 12:23:01 -0700660EXPORT_SYMBOL(ieee80211_alloc_hw_nm);
Jiri Bencf0706e82007-05-05 11:45:53 -0700661
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200662static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
Jiri Bencf0706e82007-05-05 11:45:53 -0700663{
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200664 bool have_wep = !(IS_ERR(local->wep_tx_tfm) ||
665 IS_ERR(local->wep_rx_tfm));
Johannes Berg30686bf2015-06-02 21:39:54 +0200666 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE);
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200667 int n_suites = 0, r = 0, w = 0;
668 u32 *suites;
Johannes Berg25e47c12009-04-02 20:14:06 +0200669 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200670 /* keep WEP first, it may be removed below */
Johannes Berg25e47c12009-04-02 20:14:06 +0200671 WLAN_CIPHER_SUITE_WEP40,
672 WLAN_CIPHER_SUITE_WEP104,
673 WLAN_CIPHER_SUITE_TKIP,
674 WLAN_CIPHER_SUITE_CCMP,
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200675 WLAN_CIPHER_SUITE_CCMP_256,
Jouni Malinen00b9cfa2015-01-24 19:52:06 +0200676 WLAN_CIPHER_SUITE_GCMP,
677 WLAN_CIPHER_SUITE_GCMP_256,
Johannes Berg25e47c12009-04-02 20:14:06 +0200678
679 /* keep last -- depends on hw flags! */
Jouni Malinen56c52da2015-01-24 19:52:08 +0200680 WLAN_CIPHER_SUITE_AES_CMAC,
681 WLAN_CIPHER_SUITE_BIP_CMAC_256,
Jouni Malinen8ade5382015-01-24 19:52:09 +0200682 WLAN_CIPHER_SUITE_BIP_GMAC_128,
683 WLAN_CIPHER_SUITE_BIP_GMAC_256,
Johannes Berg25e47c12009-04-02 20:14:06 +0200684 };
Johannes Berg8318d782008-01-24 19:38:38 +0100685
Johannes Berg30686bf2015-06-02 21:39:54 +0200686 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) ||
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100687 local->hw.wiphy->cipher_suites) {
688 /* If the driver advertises, or doesn't support SW crypto,
689 * we only need to remove WEP if necessary.
690 */
691 if (have_wep)
692 return 0;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200693
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100694 /* well if it has _no_ ciphers ... fine */
695 if (!local->hw.wiphy->n_cipher_suites)
696 return 0;
697
698 /* Driver provides cipher suites, but we need to exclude WEP */
699 suites = kmemdup(local->hw.wiphy->cipher_suites,
700 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
701 GFP_KERNEL);
702 if (!suites)
703 return -ENOMEM;
704
705 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
706 u32 suite = local->hw.wiphy->cipher_suites[r];
707
708 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
709 suite == WLAN_CIPHER_SUITE_WEP104)
710 continue;
711 suites[w++] = suite;
712 }
713 } else if (!local->hw.cipher_schemes) {
714 /* If the driver doesn't have cipher schemes, there's nothing
715 * else to do other than assign the (software supported and
716 * perhaps offloaded) cipher suites.
717 */
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200718 local->hw.wiphy->cipher_suites = cipher_suites;
719 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
720
721 if (!have_mfp)
Jouni Malinen8ade5382015-01-24 19:52:09 +0200722 local->hw.wiphy->n_cipher_suites -= 4;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200723
724 if (!have_wep) {
725 local->hw.wiphy->cipher_suites += 2;
726 local->hw.wiphy->n_cipher_suites -= 2;
727 }
728
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100729 /* not dynamically allocated, so just return */
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200730 return 0;
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100731 } else {
732 const struct ieee80211_cipher_scheme *cs;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200733
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100734 cs = local->hw.cipher_schemes;
735
736 /* Driver specifies cipher schemes only (but not cipher suites
737 * including the schemes)
738 *
Jouni Malinen00b9cfa2015-01-24 19:52:06 +0200739 * We start counting ciphers defined by schemes, TKIP, CCMP,
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200740 * CCMP-256, GCMP, and GCMP-256
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200741 */
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200742 n_suites = local->hw.n_cipher_schemes + 5;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200743
744 /* check if we have WEP40 and WEP104 */
745 if (have_wep)
746 n_suites += 2;
747
Jouni Malinen8ade5382015-01-24 19:52:09 +0200748 /* check if we have AES_CMAC, BIP-CMAC-256, BIP-GMAC-128,
749 * BIP-GMAC-256
750 */
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200751 if (have_mfp)
Jouni Malinen8ade5382015-01-24 19:52:09 +0200752 n_suites += 4;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200753
754 suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL);
755 if (!suites)
756 return -ENOMEM;
757
758 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200759 suites[w++] = WLAN_CIPHER_SUITE_CCMP_256;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200760 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
Jouni Malinen00b9cfa2015-01-24 19:52:06 +0200761 suites[w++] = WLAN_CIPHER_SUITE_GCMP;
762 suites[w++] = WLAN_CIPHER_SUITE_GCMP_256;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200763
764 if (have_wep) {
765 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
766 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
767 }
768
Jouni Malinen56c52da2015-01-24 19:52:08 +0200769 if (have_mfp) {
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200770 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
Jouni Malinen56c52da2015-01-24 19:52:08 +0200771 suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256;
Jouni Malinen8ade5382015-01-24 19:52:09 +0200772 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_128;
773 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_256;
Jouni Malinen56c52da2015-01-24 19:52:08 +0200774 }
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200775
Johannes Berge3a55b52015-05-05 16:32:29 +0200776 for (r = 0; r < local->hw.n_cipher_schemes; r++) {
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200777 suites[w++] = cs[r].cipher;
Johannes Berg94c78cb2015-05-20 11:31:47 +0200778 if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) {
779 kfree(suites);
Johannes Berge3a55b52015-05-05 16:32:29 +0200780 return -EINVAL;
Johannes Berg94c78cb2015-05-20 11:31:47 +0200781 }
Johannes Berge3a55b52015-05-05 16:32:29 +0200782 }
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200783 }
784
785 local->hw.wiphy->cipher_suites = suites;
786 local->hw.wiphy->n_cipher_suites = w;
787 local->wiphy_ciphers_allocated = true;
788
789 return 0;
790}
791
792int ieee80211_register_hw(struct ieee80211_hw *hw)
793{
794 struct ieee80211_local *local = hw_to_local(hw);
795 int result, i;
796 enum ieee80211_band band;
797 int channels, max_bitrates;
798 bool supp_ht, supp_vht;
799 netdev_features_t feature_whitelist;
800 struct cfg80211_chan_def dflt_chandef = {};
801
Johannes Berg30686bf2015-06-02 21:39:54 +0200802 if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200803 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
804 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
805 return -EINVAL;
806
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +0200807 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
808 (!local->ops->tdls_channel_switch ||
Arik Nemtsov8a4d32f2014-11-09 18:50:20 +0200809 !local->ops->tdls_cancel_channel_switch ||
810 !local->ops->tdls_recv_channel_switch))
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +0200811 return -EOPNOTSUPP;
812
Larry Finger38bb3e92011-05-05 18:48:47 -0500813#ifdef CONFIG_PM
Johannes Berg964dc9e2013-06-03 17:25:34 +0200814 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
Johannes Bergeecc4802011-05-04 15:37:29 +0200815 return -EINVAL;
Johannes Bergdfb89c52012-06-27 09:23:48 +0200816#endif
Johannes Bergeecc4802011-05-04 15:37:29 +0200817
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200818 if (!local->use_chanctx) {
819 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
820 const struct ieee80211_iface_combination *comb;
821
822 comb = &local->hw.wiphy->iface_combinations[i];
823
824 if (comb->num_different_channels > 1)
825 return -EINVAL;
826 }
Johannes Berg746a3362012-10-22 15:20:53 +0200827 } else {
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200828 /*
829 * WDS is currently prohibited when channel contexts are used
830 * because there's no clear definition of which channel WDS
831 * type interfaces use
832 */
833 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
834 return -EINVAL;
Simon Wunderlich164eb022013-02-08 18:16:20 +0100835
Michal Kazior486cf4c2014-10-10 12:43:23 +0200836 /* DFS is not supported with multi-channel combinations yet */
Simon Wunderlich164eb022013-02-08 18:16:20 +0100837 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
838 const struct ieee80211_iface_combination *comb;
839
840 comb = &local->hw.wiphy->iface_combinations[i];
841
Michal Kazior486cf4c2014-10-10 12:43:23 +0200842 if (comb->radar_detect_widths &&
843 comb->num_different_channels > 1)
Simon Wunderlich164eb022013-02-08 18:16:20 +0100844 return -EINVAL;
845 }
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200846 }
847
Arik Nemtsov72d78722012-05-10 16:18:26 +0300848 /* Only HW csum features are currently compatible with mac80211 */
849 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
Johannes Berg80616c02015-04-14 14:50:41 +0200850 NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA |
851 NETIF_F_GSO_SOFTWARE;
Arik Nemtsov72d78722012-05-10 16:18:26 +0300852 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
853 return -EINVAL;
854
Helmut Schaa78be49e2010-10-02 11:31:55 +0200855 if (hw->max_report_rates == 0)
856 hw->max_report_rates = hw->max_rates;
857
Johannes Berg04ecd252012-09-11 14:34:12 +0200858 local->rx_chains = 1;
859
Johannes Berg8318d782008-01-24 19:38:38 +0100860 /*
861 * generic code guarantees at least one band,
862 * set this very early because much code assumes
863 * that hw.conf.channel is assigned
864 */
Johannes Berg2a519312009-02-10 21:25:55 +0100865 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200866 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200867 supp_ht = false;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000868 supp_vht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100869 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
870 struct ieee80211_supported_band *sband;
871
872 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200873 if (!sband)
874 continue;
Karl Beldanfffa4b12013-04-15 19:04:06 +0200875
876 if (!dflt_chandef.chan) {
877 cfg80211_chandef_create(&dflt_chandef,
878 &sband->channels[0],
879 NL80211_CHAN_NO_HT);
Johannes Berg8318d782008-01-24 19:38:38 +0100880 /* init channel we're on */
Karl Beldanfffa4b12013-04-15 19:04:06 +0200881 if (!local->use_chanctx && !local->_oper_chandef.chan) {
882 local->hw.conf.chandef = dflt_chandef;
883 local->_oper_chandef = dflt_chandef;
884 }
885 local->monitor_chandef = dflt_chandef;
Johannes Berg8318d782008-01-24 19:38:38 +0100886 }
Karl Beldanfffa4b12013-04-15 19:04:06 +0200887
Johannes Bergde95a542009-04-01 11:58:36 +0200888 channels += sband->n_channels;
889
890 if (max_bitrates < sband->n_bitrates)
891 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200892 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000893 supp_vht = supp_vht || sband->vht_cap.vht_supported;
Johannes Berg04ecd252012-09-11 14:34:12 +0200894
895 if (sband->ht_cap.ht_supported)
896 local->rx_chains =
897 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
898 local->rx_chains);
899
900 /* TODO: consider VHT for RX chains, hopefully it's the same */
Johannes Berg8318d782008-01-24 19:38:38 +0100901 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700902
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700903 /* if low-level driver supports AP, we also support VLAN */
Johannes Berg7527a782011-05-13 10:58:57 +0200904 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
905 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
906 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
907 }
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700908
909 /* mac80211 always supports monitor */
Johannes Berg7527a782011-05-13 10:58:57 +0200910 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
911 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
912
Johannes Berg55de9082012-07-26 17:24:39 +0200913 /* mac80211 doesn't support more than one IBSS interface right now */
Johannes Berg8e621fc2011-05-14 01:55:23 +0200914 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
915 const struct ieee80211_iface_combination *c;
916 int j;
917
918 c = &hw->wiphy->iface_combinations[i];
919
Johannes Berg8e621fc2011-05-14 01:55:23 +0200920 for (j = 0; j < c->n_limits; j++)
921 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
922 c->limits[j].max > 1)
923 return -EINVAL;
924 }
925
Johannes Berg5b0ec942014-01-06 16:02:34 +0100926 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
927 sizeof(void *) * channels, GFP_KERNEL);
928 if (!local->int_scan_req)
929 return -ENOMEM;
930
931 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
932 if (!local->hw.wiphy->bands[band])
933 continue;
934 local->int_scan_req->rates[band] = (u32) -1;
935 }
936
Johannes Berg5eb5a522010-08-25 14:34:01 +0200937#ifndef CONFIG_MAC80211_MESH
938 /* mesh depends on Kconfig, but drivers should set it if they want */
939 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
940#endif
941
Javier Cardona1570ca52011-04-07 15:08:35 -0700942 /* if the underlying driver supports mesh, mac80211 will (at least)
943 * provide routing of mesh authentication frames to userspace */
944 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
945 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
946
Johannes Berga621fa42010-08-27 14:26:54 +0300947 /* mac80211 supports control port protocol changing */
948 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
949
Johannes Berg30686bf2015-06-02 21:39:54 +0200950 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) {
Johannes Berg77965c92009-02-18 18:45:06 +0100951 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
Johannes Berg30686bf2015-06-02 21:39:54 +0200952 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) {
Johannes Berg77965c92009-02-18 18:45:06 +0100953 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
andrea merello52512072014-01-19 22:21:49 +0100954 if (hw->max_signal <= 0) {
955 result = -EINVAL;
956 goto fail_wiphy_register;
957 }
958 }
Johannes Berg77965c92009-02-18 18:45:06 +0100959
Johannes Bergde95a542009-04-01 11:58:36 +0200960 /*
961 * Calculate scan IE length -- we need this to alloc
962 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300963 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200964 * information -- SSID is the driver's responsibility.
965 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300966 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
967 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200968 if (supp_ht)
969 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200970
Karl Beldand0e6c212013-03-25 16:26:58 +0100971 if (supp_vht)
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000972 local->scan_ies_len +=
Mahesh Palivelad4950282012-10-10 11:25:40 +0000973 2 + sizeof(struct ieee80211_vht_cap);
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000974
Johannes Bergde95a542009-04-01 11:58:36 +0200975 if (!local->ops->hw_scan) {
976 /* For hw_scan, driver needs to set these up. */
977 local->hw.wiphy->max_scan_ssids = 4;
978 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
979 }
980
981 /*
982 * If the driver supports any scan IEs, then assume the
983 * limit includes the IEs mac80211 will add, otherwise
984 * leave it at zero and let the driver sort it out; we
985 * still pass our IEs to the driver but userspace will
986 * not be allowed to in that case.
987 */
988 if (local->hw.wiphy->max_scan_ie_len)
989 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
990
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200991 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
992 local->hw.n_cipher_schemes));
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300993
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200994 result = ieee80211_init_cipher_suites(local);
995 if (result < 0)
996 goto fail_wiphy_register;
Johannes Berg25e47c12009-04-02 20:14:06 +0200997
Johannes Berg21f83582010-12-18 17:20:47 +0100998 if (!local->ops->remain_on_channel)
999 local->hw.wiphy->max_remain_on_channel_duration = 5000;
Johannes Berga2939112010-12-14 17:54:28 +01001000
Arik Nemtsovdfe018b2011-09-28 14:12:52 +03001001 /* mac80211 based drivers don't support internal TDLS setup */
1002 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
1003 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
1004
Luciano Coelhoe9a21942014-10-08 09:48:36 +03001005 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
Johannes Berg30686bf2015-06-02 21:39:54 +02001006 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA))
Luciano Coelhoe9a21942014-10-08 09:48:36 +03001007 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
1008
Andrei Otcheretianski0d06d9b2014-05-09 14:11:47 +03001009 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
1010
Jiri Bencf0706e82007-05-05 11:45:53 -07001011 result = wiphy_register(local->hw.wiphy);
1012 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +01001013 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -07001014
Johannes Berge2530082008-05-17 00:57:14 +02001015 /*
1016 * We use the number of queues for feature tests (QoS, HT) internally
1017 * so restrict them appropriately.
1018 */
Johannes Berge2530082008-05-17 00:57:14 +02001019 if (hw->queues > IEEE80211_MAX_QUEUES)
1020 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +02001021
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001022 local->workqueue =
Kees Cookd8537542013-07-03 15:04:57 -07001023 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001024 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -07001025 result = -ENOMEM;
1026 goto fail_workqueue;
1027 }
1028
Johannes Bergb306f452007-07-10 19:32:08 +02001029 /*
1030 * The hardware needs headroom for sending the frame,
1031 * and we need some headroom for passing the frame to monitor
1032 * interfaces, but never both at the same time.
1033 */
Jiri Benc33ccad32007-07-18 17:10:44 +02001034 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
Helmut Schaaa2fe8162011-10-11 18:08:54 +02001035 IEEE80211_TX_STATUS_HEADROOM);
Johannes Bergb306f452007-07-10 19:32:08 +02001036
Jiri Bence9f207f2007-05-05 11:46:38 -07001037 debugfs_hw_add(local);
1038
Helmut Schaab4469182010-02-24 14:19:37 +01001039 /*
1040 * if the driver doesn't specify a max listen interval we
1041 * use 5 which should be a safe default
1042 */
Tomas Winklerea95bba2008-07-18 13:53:00 +08001043 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +01001044 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +08001045
1046 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1047
Juuso Oikarinenff616382010-06-09 09:51:52 +03001048 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +03001049
Felix Fietkauba8c3d62015-03-27 21:30:37 +01001050 if (!local->hw.txq_ac_max_pending)
1051 local->hw.txq_ac_max_pending = 64;
1052
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001053 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -04001054 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001055 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
1056 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001057
Karl Beldan24d47302013-11-19 17:12:05 +01001058 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1059
Mohammed Shafi Shajakhanb57e6b52012-02-09 19:59:43 +05301060 ieee80211_led_init(local);
1061
Jiri Bencf0706e82007-05-05 11:45:53 -07001062 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -07001063
Johannes Berg830f9032007-10-28 14:51:05 +01001064 result = ieee80211_init_rate_ctrl_alg(local,
1065 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -07001066 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001067 wiphy_debug(local->hw.wiphy,
1068 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001069 goto fail_rate;
1070 }
1071
Johannes Berg8dffff22008-12-09 00:10:30 +01001072 /* add one default STA interface if supported */
Ben Greeare27513f2014-10-22 12:23:03 -07001073 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
Johannes Berg30686bf2015-06-02 21:39:54 +02001074 !ieee80211_hw_check(hw, NO_AUTO_VIF)) {
Tom Gundersen6bab2e192015-03-18 11:13:39 +01001075 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
Johannes Berg8dffff22008-12-09 00:10:30 +01001076 NL80211_IFTYPE_STATION, NULL);
1077 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001078 wiphy_warn(local->hw.wiphy,
1079 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +01001080 }
Jiri Bencf0706e82007-05-05 11:45:53 -07001081
Jiri Bencf0706e82007-05-05 11:45:53 -07001082 rtnl_unlock();
1083
John W. Linville26b36cf2010-06-04 14:25:44 -04001084#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001085 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1086 result = register_inetaddr_notifier(&local->ifa_notifier);
1087 if (result)
1088 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -04001089#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001090
Johannes Berga65240c2013-01-14 15:14:34 +01001091#if IS_ENABLED(CONFIG_IPV6)
1092 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1093 result = register_inet6addr_notifier(&local->ifa6_notifier);
1094 if (result)
1095 goto fail_ifa6;
1096#endif
1097
Jiri Bencf0706e82007-05-05 11:45:53 -07001098 return 0;
1099
Johannes Berga65240c2013-01-14 15:14:34 +01001100#if IS_ENABLED(CONFIG_IPV6)
1101 fail_ifa6:
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001102#ifdef CONFIG_INET
Johannes Berga65240c2013-01-14 15:14:34 +01001103 unregister_inetaddr_notifier(&local->ifa_notifier);
1104#endif
1105#endif
1106#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001107 fail_ifa:
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001108#endif
Johannes Berg54330bf2015-01-21 13:52:24 +01001109 rtnl_lock();
1110 rate_control_deinitialize(local);
Johannes Berg10f644a2009-04-16 13:17:25 +02001111 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +02001112 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -07001113 rtnl_unlock();
Johannes Berg54330bf2015-01-21 13:52:24 +01001114 ieee80211_led_exit(local);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001115 ieee80211_wep_free(local);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001116 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +02001117 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -07001118 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +02001119 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001120 if (local->wiphy_ciphers_allocated)
1121 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +02001122 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001123 return result;
1124}
1125EXPORT_SYMBOL(ieee80211_register_hw);
1126
Jiri Bencf0706e82007-05-05 11:45:53 -07001127void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1128{
1129 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001130
1131 tasklet_kill(&local->tx_pending_tasklet);
1132 tasklet_kill(&local->tasklet);
1133
John W. Linville26b36cf2010-06-04 14:25:44 -04001134#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001135 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001136#endif
Johannes Berga65240c2013-01-14 15:14:34 +01001137#if IS_ENABLED(CONFIG_IPV6)
1138 unregister_inet6addr_notifier(&local->ifa6_notifier);
1139#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001140
Jiri Bencf0706e82007-05-05 11:45:53 -07001141 rtnl_lock();
1142
Johannes Berg79010422007-09-18 17:29:21 -04001143 /*
1144 * At this point, interface list manipulations are fine
1145 * because the driver cannot be handing us frames any
1146 * more and the tasklet is killed.
1147 */
Johannes Berg75636522008-07-09 14:40:35 +02001148 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +02001149
Jiri Bencf0706e82007-05-05 11:45:53 -07001150 rtnl_unlock();
1151
Christian Lamparter258086a2010-08-22 23:48:25 +02001152 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001153 cancel_work_sync(&local->reconfig_filter);
Arik Nemtsovc8ff71e2015-07-08 15:41:45 +03001154 cancel_work_sync(&local->tdls_chsw_work);
Johannes Berg18db5942013-11-06 10:34:36 +01001155 flush_work(&local->sched_scan_stopped_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001156
Jiri Bencf0706e82007-05-05 11:45:53 -07001157 ieee80211_clear_tx_pending(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001158 rate_control_deinitialize(local);
1159
Joe Perchesf64f9e72009-11-29 16:55:45 -08001160 if (skb_queue_len(&local->skb_queue) ||
1161 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001162 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001163 skb_queue_purge(&local->skb_queue);
1164 skb_queue_purge(&local->skb_queue_unreliable);
Arik Nemtsovc8ff71e2015-07-08 15:41:45 +03001165 skb_queue_purge(&local->skb_queue_tdls_chsw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001166
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001167 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001168 wiphy_unregister(local->hw.wiphy);
1169 ieee80211_wep_free(local);
1170 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +02001171 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001172}
1173EXPORT_SYMBOL(ieee80211_unregister_hw);
1174
Johannes Berga729cff2011-11-06 14:13:34 +01001175static int ieee80211_free_ack_frame(int id, void *p, void *data)
1176{
1177 WARN_ONCE(1, "Have pending ack frames!\n");
1178 kfree_skb(p);
1179 return 0;
1180}
1181
Jiri Bencf0706e82007-05-05 11:45:53 -07001182void ieee80211_free_hw(struct ieee80211_hw *hw)
1183{
1184 struct ieee80211_local *local = hw_to_local(hw);
1185
Johannes Bergc771c9d2009-01-23 22:54:03 +01001186 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +02001187 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +01001188
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001189 if (local->wiphy_ciphers_allocated)
1190 kfree(local->hw.wiphy->cipher_suites);
1191
Johannes Berga729cff2011-11-06 14:13:34 +01001192 idr_for_each(&local->ack_status_frames,
1193 ieee80211_free_ack_frame, NULL);
1194 idr_destroy(&local->ack_status_frames);
1195
Johannes Berg54330bf2015-01-21 13:52:24 +01001196 sta_info_stop(local);
1197
Johannes Berg8d5c2582015-04-23 12:19:22 +02001198 ieee80211_free_led_names(local);
1199
Jiri Bencf0706e82007-05-05 11:45:53 -07001200 wiphy_free(local->hw.wiphy);
1201}
1202EXPORT_SYMBOL(ieee80211_free_hw);
1203
Jiri Bencf0706e82007-05-05 11:45:53 -07001204static int __init ieee80211_init(void)
1205{
1206 struct sk_buff *skb;
1207 int ret;
1208
Johannes Berge039fa42008-05-15 12:55:29 +02001209 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1210 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +02001211 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -07001212
Felix Fietkaucccf1292008-10-05 18:07:45 +02001213 ret = rc80211_minstrel_init();
1214 if (ret)
1215 return ret;
1216
Felix Fietkauec8aa662010-05-13 16:48:03 +02001217 ret = rc80211_minstrel_ht_init();
1218 if (ret)
1219 goto err_minstrel;
1220
Johannes Berg47846c92009-11-25 17:46:19 +01001221 ret = ieee80211_iface_init();
1222 if (ret)
1223 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -07001224
Jiri Bencf0706e82007-05-05 11:45:53 -07001225 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +01001226 err_netdev:
Felix Fietkauec8aa662010-05-13 16:48:03 +02001227 rc80211_minstrel_ht_exit();
1228 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +01001229 rc80211_minstrel_exit();
1230
1231 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -07001232}
1233
Jiri Bencf0706e82007-05-05 11:45:53 -07001234static void __exit ieee80211_exit(void)
1235{
Felix Fietkauec8aa662010-05-13 16:48:03 +02001236 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +02001237 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +01001238
Johannes Bergbf7cd942013-02-15 14:40:31 +01001239 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001240
Johannes Berg47846c92009-11-25 17:46:19 +01001241 ieee80211_iface_exit();
Johannes Bergd07c7cf2011-05-14 11:04:51 +02001242
1243 rcu_barrier();
Jiri Bencf0706e82007-05-05 11:45:53 -07001244}
1245
1246
Johannes Bergca9938f2007-09-11 12:50:32 +02001247subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -07001248module_exit(ieee80211_exit);
1249
1250MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1251MODULE_LICENSE("GPL");