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mac80211: track whether to use channel contexts
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / mac80211 / main.c
CommitLineData
f0706e82
JB		 1/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <net/mac80211.h>
f0706e82
JB		 12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/netdevice.h>
15#include <linux/types.h>
16#include <linux/slab.h>
17#include <linux/skbuff.h>
18#include <linux/etherdevice.h>
19#include <linux/if_arp.h>
f0706e82 20#include <linux/rtnetlink.h>
f0706e82 21#include <linux/bitmap.h>
e8db0be1 22#include <linux/pm_qos.h>
68542962 23#include <linux/inetdevice.h>
881d966b 24#include <net/net_namespace.h>
f0706e82
JB		 25#include <net/cfg80211.h>
26
f0706e82 27#include "ieee80211_i.h"
24487981 28#include "driver-ops.h"
2c8dccc7 29#include "rate.h"
f7a92144 30#include "mesh.h"
f0706e82 31#include "wep.h"
2c8dccc7 32#include "led.h"
e0eb6859 33#include "cfg.h"
e9f207f0 34#include "debugfs.h"
f0706e82 35
681c4d07
JB		 36static struct lock_class_key ieee80211_rx_skb_queue_class;
37
0d143fe1 38void ieee80211_configure_filter(struct ieee80211_local *local)
4150c572 39{
3ac64bee 40 u64 mc;
4150c572
JB		 41 unsigned int changed_flags;
42 unsigned int new_flags = 0;
43
53918994 44 if (atomic_read(&local->iff_promiscs))
4150c572
JB		 45 new_flags |= FIF_PROMISC_IN_BSS;
46
53918994 47 if (atomic_read(&local->iff_allmultis))
4150c572
JB		 48 new_flags |= FIF_ALLMULTI;
49
8a690674
BG		 50 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
51 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
8cc9a739
MW		 52 new_flags |= FIF_BCN_PRBRESP_PROMISC;
53
7be5086d
JB		 54 if (local->fif_probe_req || local->probe_req_reg)
55 new_flags |= FIF_PROBE_REQ;
56
8cc9a739
MW		 57 if (local->fif_fcsfail)
58 new_flags |= FIF_FCSFAIL;
59
60 if (local->fif_plcpfail)
61 new_flags |= FIF_PLCPFAIL;
62
63 if (local->fif_control)
64 new_flags |= FIF_CONTROL;
65
66 if (local->fif_other_bss)
67 new_flags |= FIF_OTHER_BSS;
4150c572 68
e3b90ca2
IP		 69 if (local->fif_pspoll)
70 new_flags |= FIF_PSPOLL;
71
3ac64bee 72 spin_lock_bh(&local->filter_lock);
4150c572
JB		 73 changed_flags = local->filter_flags ^ new_flags;
74
22bedad3 75 mc = drv_prepare_multicast(local, &local->mc_list);
3ac64bee
JB		 76 spin_unlock_bh(&local->filter_lock);
77
4150c572
JB		 78 /* be a bit nasty */
79 new_flags |= (1<<31);
80
3ac64bee 81 drv_configure_filter(local, changed_flags, &new_flags, mc);
4150c572
JB		 82
83 WARN_ON(new_flags & (1<<31));
84
85 local->filter_flags = new_flags & ~(1<<31);
86}
87
3ac64bee
JB		 88static void ieee80211_reconfig_filter(struct work_struct *work)
89{
90 struct ieee80211_local *local =
91 container_of(work, struct ieee80211_local, reconfig_filter);
92
93 ieee80211_configure_filter(local);
94}
95
e8975581 96int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
b2c258fb 97{
5e5202a4 98 struct ieee80211_channel *chan;
b2c258fb 99 int ret = 0;
e8975581 100 int power;
094d05dc 101 enum nl80211_channel_type channel_type;
ffd2778b 102 u32 offchannel_flag;
f0706e82 103
cb121bad
JB		 104 might_sleep();
105
ffd2778b 106 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
5e5202a4
SG		 107 if (local->scan_channel) {
108 chan = local->scan_channel;
4f2e9d91
BG		 109 /* If scanning on oper channel, use whatever channel-type
110 * is currently in use.
111 */
112 if (chan == local->oper_channel)
113 channel_type = local->_oper_channel_type;
114 else
115 channel_type = NL80211_CHAN_NO_HT;
b23b025f 116 } else if (local->tmp_channel) {
5e5202a4 117 chan = local->tmp_channel;
b8bc4b0a 118 channel_type = local->tmp_channel_type;
72bdcf34 119 } else {
b2c258fb 120 chan = local->oper_channel;
0aaffa9b 121 channel_type = local->_oper_channel_type;
72bdcf34 122 }
b23b025f
BG		 123
124 if (chan != local->oper_channel ||
125 channel_type != local->_oper_channel_type)
126 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
127 else
128 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
129
ffd2778b 130 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
f0706e82 131
ffd2778b 132 if (offchannel_flag || chan != local->hw.conf.channel ||
4797938c 133 channel_type != local->hw.conf.channel_type) {
e8975581 134 local->hw.conf.channel = chan;
4797938c 135 local->hw.conf.channel_type = channel_type;
e8975581
JB		 136 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
137 }
8318d78a 138
0f78231b
JB		 139 if (!conf_is_ht(&local->hw.conf)) {
140 /*
141 * mac80211.h documents that this is only valid
142 * when the channel is set to an HT type, and
143 * that otherwise STATIC is used.
144 */
145 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
146 } else if (local->hw.conf.smps_mode != local->smps_mode) {
147 local->hw.conf.smps_mode = local->smps_mode;
148 changed |= IEEE80211_CONF_CHANGE_SMPS;
149 }
150
cd6c524e 151 if (test_bit(SCAN_SW_SCANNING, &local->scanning) ||
8a690674 152 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) ||
04b7b2ff
JB		 153 test_bit(SCAN_HW_SCANNING, &local->scanning) ||
154 !local->ap_power_level)
e8975581 155 power = chan->max_power;
8318d78a 156 else
04b7b2ff 157 power = min(chan->max_power, local->ap_power_level);
a8302de9 158
47afbaf5 159 if (local->user_power_level >= 0)
a8302de9
VT		 160 power = min(power, local->user_power_level);
161
e8975581
JB		 162 if (local->hw.conf.power_level != power) {
163 changed |= IEEE80211_CONF_CHANGE_POWER;
164 local->hw.conf.power_level = power;
165 }
b2c258fb 166
e8975581 167 if (changed && local->open_count) {
24487981 168 ret = drv_config(local, changed);
d73782fd 169 /*
447107fb 170 * Goal:
d73782fd
JB		 171 * HW reconfiguration should never fail, the driver has told
172 * us what it can support so it should live up to that promise.
447107fb
RC		 173 *
174 * Current status:
175 * rfkill is not integrated with mac80211 and a
176 * configuration command can thus fail if hardware rfkill
177 * is enabled
178 *
179 * FIXME: integrate rfkill with mac80211 and then add this
180 * WARN_ON() back
181 *
d73782fd 182 */
447107fb 183 /* WARN_ON(ret); */
d73782fd 184 }
f0706e82 185
b2c258fb
JB		 186 return ret;
187}
f0706e82 188
471b3efd
JB		 189void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
190 u32 changed)
d9430a32 191{
471b3efd 192 struct ieee80211_local *local = sdata->local;
9cef8737 193 static const u8 zero[ETH_ALEN] = { 0 };
471b3efd
JB		 194
195 if (!changed)
196 return;
197
9cef8737 198 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
66e67e41 199 sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
9cef8737 200 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
2d0ddec5
JB		 201 sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
202 else if (sdata->vif.type == NL80211_IFTYPE_AP)
47846c9b 203 sdata->vif.bss_conf.bssid = sdata->vif.addr;
1be7fe8d
BJ		 204 else if (sdata->vif.type == NL80211_IFTYPE_WDS)
205 sdata->vif.bss_conf.bssid = NULL;
2d0ddec5 206 else if (ieee80211_vif_is_mesh(&sdata->vif)) {
2d0ddec5 207 sdata->vif.bss_conf.bssid = zero;
f142c6b9
JB		 208 } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) {
209 sdata->vif.bss_conf.bssid = sdata->vif.addr;
210 WARN_ONCE(changed & ~(BSS_CHANGED_IDLE),
211 "P2P Device BSS changed %#x", changed);
2d0ddec5
JB		 212 } else {
213 WARN_ON(1);
214 return;
215 }
216
217 switch (sdata->vif.type) {
218 case NL80211_IFTYPE_AP:
219 case NL80211_IFTYPE_ADHOC:
1be7fe8d 220 case NL80211_IFTYPE_WDS:
2d0ddec5
JB		 221 case NL80211_IFTYPE_MESH_POINT:
222 break;
223 default:
224 /* do not warn to simplify caller in scan.c */
225 changed &= ~BSS_CHANGED_BEACON_ENABLED;
226 if (WARN_ON(changed & BSS_CHANGED_BEACON))
227 return;
228 break;
229 }
230
231 if (changed & BSS_CHANGED_BEACON_ENABLED) {
9607e6b6 232 if (local->quiescing || !ieee80211_sdata_running(sdata) ||
b23b025f 233 test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) {
2d0ddec5
JB		 234 sdata->vif.bss_conf.enable_beacon = false;
235 } else {
236 /*
237 * Beacon should be enabled, but AP mode must
238 * check whether there is a beacon configured.
239 */
240 switch (sdata->vif.type) {
241 case NL80211_IFTYPE_AP:
242 sdata->vif.bss_conf.enable_beacon =
0379185b 243 !!sdata->u.ap.beacon;
2d0ddec5
JB		 244 break;
245 case NL80211_IFTYPE_ADHOC:
246 sdata->vif.bss_conf.enable_beacon =
0379185b 247 !!sdata->u.ibss.presp;
2d0ddec5 248 break;
7659a193 249#ifdef CONFIG_MAC80211_MESH
2d0ddec5 250 case NL80211_IFTYPE_MESH_POINT:
29cbe68c
JB		 251 sdata->vif.bss_conf.enable_beacon =
252 !!sdata->u.mesh.mesh_id_len;
2d0ddec5 253 break;
7659a193 254#endif
2d0ddec5
JB		 255 default:
256 /* not reached */
257 WARN_ON(1);
258 break;
259 }
260 }
261 }
262
12375ef9 263 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
d9430a32
DD		 264}
265
f698d856 266u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
d9430a32 267{
bda3933a
JB		 268 sdata->vif.bss_conf.use_cts_prot = false;
269 sdata->vif.bss_conf.use_short_preamble = false;
270 sdata->vif.bss_conf.use_short_slot = false;
7a5158ef
JB		 271 return BSS_CHANGED_ERP_CTS_PROT |
272 BSS_CHANGED_ERP_PREAMBLE |
273 BSS_CHANGED_ERP_SLOT;
d9430a32
DD		 274}
275
f0706e82
JB		 276static void ieee80211_tasklet_handler(unsigned long data)
277{
278 struct ieee80211_local *local = (struct ieee80211_local *) data;
37fbd908
JB		 279 struct sta_info *sta, *tmp;
280 struct skb_eosp_msg_data *eosp_data;
f0706e82 281 struct sk_buff *skb;
f0706e82
JB		 282
283 while ((skb = skb_dequeue(&local->skb_queue)) ||
284 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
285 switch (skb->pkt_type) {
286 case IEEE80211_RX_MSG:
51fb61e7 287 /* Clear skb->pkt_type in order to not confuse kernel
f0706e82
JB		 288 * netstack. */
289 skb->pkt_type = 0;
005e472b 290 ieee80211_rx(&local->hw, skb);
f0706e82
JB		 291 break;
292 case IEEE80211_TX_STATUS_MSG:
f0706e82 293 skb->pkt_type = 0;
005e472b 294 ieee80211_tx_status(&local->hw, skb);
f0706e82 295 break;
37fbd908
JB		 296 case IEEE80211_EOSP_MSG:
297 eosp_data = (void *)skb->cb;
298 for_each_sta_info(local, eosp_data->sta, sta, tmp) {
299 /* skip wrong virtual interface */
300 if (memcmp(eosp_data->iface,
301 sta->sdata->vif.addr, ETH_ALEN))
302 continue;
303 clear_sta_flag(sta, WLAN_STA_SP);
304 break;
305 }
306 dev_kfree_skb(skb);
307 break;
f4ea83dd 308 default:
5e3f3089
LF		 309 WARN(1, "mac80211: Packet is of unknown type %d\n",
310 skb->pkt_type);
f0706e82
JB		 311 dev_kfree_skb(skb);
312 break;
313 }
314 }
315}
316
f2753ddb
JB		 317static void ieee80211_restart_work(struct work_struct *work)
318{
319 struct ieee80211_local *local =
320 container_of(work, struct ieee80211_local, restart_work);
321
bc86863d
SG		 322 /* wait for scan work complete */
323 flush_workqueue(local->workqueue);
324
325 mutex_lock(&local->mtx);
79f460ca 326 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
5260a5b2
JB		 327 rcu_dereference_protected(local->sched_scan_sdata,
328 lockdep_is_held(&local->mtx)),
bc86863d
SG		 329 "%s called with hardware scan in progress\n", __func__);
330 mutex_unlock(&local->mtx);
331
f2753ddb 332 rtnl_lock();
4136c422 333 ieee80211_scan_cancel(local);
f2753ddb
JB		 334 ieee80211_reconfig(local);
335 rtnl_unlock();
336}
337
338void ieee80211_restart_hw(struct ieee80211_hw *hw)
339{
340 struct ieee80211_local *local = hw_to_local(hw);
341
b5878a2d
JB		 342 trace_api_restart_hw(local);
343
b196d031
MB		 344 wiphy_info(hw->wiphy,
345 "Hardware restart was requested\n");
346
18145c69 347 /* use this reason, ieee80211_reconfig will unblock it */
f2753ddb
JB		 348 ieee80211_stop_queues_by_reason(hw,
349 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
350
04800ada
AN		 351 /*
352 * Stop all Rx during the reconfig. We don't want state changes
353 * or driver callbacks while this is in progress.
354 */
355 local->in_reconfig = true;
356 barrier();
357
f2753ddb
JB		 358 schedule_work(&local->restart_work);
359}
360EXPORT_SYMBOL(ieee80211_restart_hw);
361
0f78231b
JB		 362static void ieee80211_recalc_smps_work(struct work_struct *work)
363{
364 struct ieee80211_local *local =
365 container_of(work, struct ieee80211_local, recalc_smps);
366
025e6be2 367 ieee80211_recalc_smps(local);
0f78231b
JB		 368}
369
26b36cfe 370#ifdef CONFIG_INET
2b2c009e
JO		 371static int ieee80211_ifa_changed(struct notifier_block *nb,
372 unsigned long data, void *arg)
373{
374 struct in_ifaddr *ifa = arg;
375 struct ieee80211_local *local =
376 container_of(nb, struct ieee80211_local,
377 ifa_notifier);
378 struct net_device *ndev = ifa->ifa_dev->dev;
379 struct wireless_dev *wdev = ndev->ieee80211_ptr;
68542962 380 struct in_device *idev;
2b2c009e 381 struct ieee80211_sub_if_data *sdata;
68542962 382 struct ieee80211_bss_conf *bss_conf;
2b2c009e 383 struct ieee80211_if_managed *ifmgd;
68542962 384 int c = 0;
2b2c009e
JO		 385
386 /* Make sure it's our interface that got changed */
387 if (!wdev)
388 return NOTIFY_DONE;
389
390 if (wdev->wiphy != local->hw.wiphy)
391 return NOTIFY_DONE;
392
2b2c009e 393 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
68542962 394 bss_conf = &sdata->vif.bss_conf;
2b2c009e
JO		 395
396 /* ARP filtering is only supported in managed mode */
397 if (sdata->vif.type != NL80211_IFTYPE_STATION)
398 return NOTIFY_DONE;
399
95ae6b22 400 idev = __in_dev_get_rtnl(sdata->dev);
68542962
JO		 401 if (!idev)
402 return NOTIFY_DONE;
403
2b2c009e
JO		 404 ifmgd = &sdata->u.mgd;
405 mutex_lock(&ifmgd->mtx);
68542962
JO		 406
407 /* Copy the addresses to the bss_conf list */
408 ifa = idev->ifa_list;
409 while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
410 bss_conf->arp_addr_list[c] = ifa->ifa_address;
411 ifa = ifa->ifa_next;
412 c++;
413 }
414
415 /* If not all addresses fit the list, disable filtering */
416 if (ifa) {
417 sdata->arp_filter_state = false;
418 c = 0;
419 } else {
420 sdata->arp_filter_state = true;
421 }
422 bss_conf->arp_addr_cnt = c;
423
53d69c39 424 /* Configure driver only if associated (which also implies it is up) */
68542962
JO		 425 if (ifmgd->associated) {
426 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
427 ieee80211_bss_info_change_notify(sdata,
428 BSS_CHANGED_ARP_FILTER);
429 }
430
2b2c009e
JO		 431 mutex_unlock(&ifmgd->mtx);
432
433 return NOTIFY_DONE;
434}
26b36cfe 435#endif
2b2c009e 436
4e6cbfd0
JL		 437static int ieee80211_napi_poll(struct napi_struct *napi, int budget)
438{
439 struct ieee80211_local *local =
440 container_of(napi, struct ieee80211_local, napi);
441
442 return local->ops->napi_poll(&local->hw, budget);
443}
444
445void ieee80211_napi_schedule(struct ieee80211_hw *hw)
446{
447 struct ieee80211_local *local = hw_to_local(hw);
448
449 napi_schedule(&local->napi);
450}
451EXPORT_SYMBOL(ieee80211_napi_schedule);
452
453void ieee80211_napi_complete(struct ieee80211_hw *hw)
454{
455 struct ieee80211_local *local = hw_to_local(hw);
456
457 napi_complete(&local->napi);
458}
459EXPORT_SYMBOL(ieee80211_napi_complete);
460
2e161f78
JB		 461/* There isn't a lot of sense in it, but you can transmit anything you like */
462static const struct ieee80211_txrx_stypes
463ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
464 [NL80211_IFTYPE_ADHOC] = {
465 .tx = 0xffff,
3bfda62c
WH		 466 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
467 BIT(IEEE80211_STYPE_AUTH >> 4) |
468 BIT(IEEE80211_STYPE_DEAUTH >> 4),
2e161f78
JB		 469 },
470 [NL80211_IFTYPE_STATION] = {
471 .tx = 0xffff,
472 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
473 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
474 },
475 [NL80211_IFTYPE_AP] = {
476 .tx = 0xffff,
477 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
478 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
479 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
480 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
481 BIT(IEEE80211_STYPE_AUTH >> 4) |
482 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
483 BIT(IEEE80211_STYPE_ACTION >> 4),
484 },
485 [NL80211_IFTYPE_AP_VLAN] = {
486 /* copy AP */
487 .tx = 0xffff,
488 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
489 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
490 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
491 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
492 BIT(IEEE80211_STYPE_AUTH >> 4) |
493 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
2ca27bcf
JB		 494 BIT(IEEE80211_STYPE_ACTION >> 4),
495 },
496 [NL80211_IFTYPE_P2P_CLIENT] = {
497 .tx = 0xffff,
498 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
499 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
500 },
501 [NL80211_IFTYPE_P2P_GO] = {
502 .tx = 0xffff,
503 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
504 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
505 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
2e161f78
JB		 506 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
507 BIT(IEEE80211_STYPE_AUTH >> 4) |
508 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
509 BIT(IEEE80211_STYPE_ACTION >> 4),
510 },
c7108a71
JC		 511 [NL80211_IFTYPE_MESH_POINT] = {
512 .tx = 0xffff,
71839121
JC		 513 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
514 BIT(IEEE80211_STYPE_AUTH >> 4) |
515 BIT(IEEE80211_STYPE_DEAUTH >> 4),
c7108a71 516 },
f142c6b9
JB		 517 [NL80211_IFTYPE_P2P_DEVICE] = {
518 .tx = 0xffff,
519 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
520 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
521 },
2e161f78
JB		 522};
523
ef96a842
BG		 524static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
525 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
526 IEEE80211_HT_AMPDU_PARM_DENSITY,
527
528 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
529 IEEE80211_HT_CAP_MAX_AMSDU |
530 IEEE80211_HT_CAP_SGI_40),
531 .mcs = {
532 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
533 0xff, 0xff, 0xff, 0xff, 0xff, },
534 },
535};
536
f0706e82
JB		 537struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
538 const struct ieee80211_ops *ops)
539{
f0706e82 540 struct ieee80211_local *local;
96f5e66e 541 int priv_size, i;
f0706e82 542 struct wiphy *wiphy;
fe57d9f5 543 bool use_chanctx;
f0706e82 544
c0af0734
JB		 545 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
546 !ops->add_interface || !ops->remove_interface ||
547 !ops->configure_filter))
548 return NULL;
549
f09603a2
JB		 550 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
551 return NULL;
552
e269d860
JB		 553 /* check all or no channel context operations exist */
554 i = !!ops->add_chanctx + !!ops->remove_chanctx +
555 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
556 !!ops->unassign_vif_chanctx;
557 if (WARN_ON(i != 0 && i != 5))
558 return NULL;
fe57d9f5 559 use_chanctx = i == 5;
e269d860 560
f0706e82
JB		 561 /* Ensure 32-byte alignment of our private data and hw private data.
562 * We use the wiphy priv data for both our ieee80211_local and for
563 * the driver's private data
564 *
565 * In memory it'll be like this:
566 *
567 * +-------------------------+
568 * | struct wiphy |
569 * +-------------------------+
570 * | struct ieee80211_local |
571 * +-------------------------+
572 * | driver's private data |
573 * +-------------------------+
574 *
575 */
1ce8e7b5 576 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
f0706e82
JB		 577
578 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
579
580 if (!wiphy)
581 return NULL;
582
2e161f78
JB		 583 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
584
207aba60
JB		 585 wiphy->privid = mac80211_wiphy_privid;
586
9bc383de
JB		 587 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
588 WIPHY_FLAG_4ADDR_AP |
ee971924 589 WIPHY_FLAG_4ADDR_STATION |
7c4ef712 590 WIPHY_FLAG_REPORTS_OBSS |
81ddbb5c
JB		 591 WIPHY_FLAG_OFFCHAN_TX;
592
593 if (ops->remain_on_channel)
594 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
207aba60 595
13c40c54
AS		 596 wiphy->features = NL80211_FEATURE_SK_TX_STATUS |
597 NL80211_FEATURE_HT_IBSS;
a729cff8 598
207aba60
JB		 599 if (!ops->set_key)
600 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
18a83659 601
0c1ad2ca 602 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
f0706e82
JB		 603
604 local = wiphy_priv(wiphy);
de95a54b 605
f0706e82
JB		 606 local->hw.wiphy = wiphy;
607
1ce8e7b5 608 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
f0706e82
JB		 609
610 local->ops = ops;
fe57d9f5 611 local->use_chanctx = use_chanctx;
f0706e82 612
e6a9854b
JB		 613 /* set up some defaults */
614 local->hw.queues = 1;
615 local->hw.max_rates = 1;
78be49ec 616 local->hw.max_report_rates = 0;
df6ba5d8 617 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
39e68712 618 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
3a25a8c8 619 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
b9a5f8ca
JM		 620 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
621 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
ac55d2fe
JB		 622 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
623 IEEE80211_RADIOTAP_MCS_HAVE_GI |
624 IEEE80211_RADIOTAP_MCS_HAVE_BW;
c428c892 625 local->user_power_level = -1;
ef96a842 626 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
f0706e82 627
79010420 628 INIT_LIST_HEAD(&local->interfaces);
2f787b0b
YH		 629
630 __hw_addr_init(&local->mc_list);
631
c771c9d8 632 mutex_init(&local->iflist_mtx);
a1699b75 633 mutex_init(&local->mtx);
f0706e82 634
ad0e2b5a 635 mutex_init(&local->key_mtx);
3b8d81e0 636 spin_lock_init(&local->filter_lock);
ce7c9111
KV		 637 spin_lock_init(&local->queue_stop_reason_lock);
638
d01a1e65
MK		 639 INIT_LIST_HEAD(&local->chanctx_list);
640 mutex_init(&local->chanctx_mtx);
641
681c4d07
JB		 642 /*
643 * The rx_skb_queue is only accessed from tasklets,
644 * but other SKB queues are used from within IRQ
645 * context. Therefore, this one needs a different
646 * locking class so our direct, non-irq-safe use of
647 * the queue's lock doesn't throw lockdep warnings.
648 */
649 skb_queue_head_init_class(&local->rx_skb_queue,
650 &ieee80211_rx_skb_queue_class);
24a8fdad 651
c2b13452 652 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
f0706e82 653
f2753ddb
JB		 654 INIT_WORK(&local->restart_work, ieee80211_restart_work);
655
3ac64bee 656 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
0f78231b
JB		 657 INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
658 local->smps_mode = IEEE80211_SMPS_OFF;
3ac64bee 659
520eb820
KV		 660 INIT_WORK(&local->dynamic_ps_enable_work,
661 ieee80211_dynamic_ps_enable_work);
662 INIT_WORK(&local->dynamic_ps_disable_work,
663 ieee80211_dynamic_ps_disable_work);
664 setup_timer(&local->dynamic_ps_timer,
665 ieee80211_dynamic_ps_timer, (unsigned long) local);
666
85a9994a
LC		 667 INIT_WORK(&local->sched_scan_stopped_work,
668 ieee80211_sched_scan_stopped_work);
669
a729cff8
JB		 670 spin_lock_init(&local->ack_status_lock);
671 idr_init(&local->ack_status_frames);
672 /* preallocate at least one entry */
673 idr_pre_get(&local->ack_status_frames, GFP_KERNEL);
674
f0706e82
JB		 675 sta_info_init(local);
676
a6a67db2 677 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
2a577d98 678 skb_queue_head_init(&local->pending[i]);
a6a67db2
JB		 679 atomic_set(&local->agg_queue_stop[i], 0);
680 }
f0706e82
JB		 681 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
682 (unsigned long)local);
f0706e82
JB		 683
684 tasklet_init(&local->tasklet,
685 ieee80211_tasklet_handler,
686 (unsigned long) local);
f0706e82
JB		 687
688 skb_queue_head_init(&local->skb_queue);
689 skb_queue_head_init(&local->skb_queue_unreliable);
690
4e6cbfd0
JL		 691 /* init dummy netdev for use w/ NAPI */
692 init_dummy_netdev(&local->napi_dev);
693
fe67c913
JB		 694 ieee80211_led_names(local);
695
2eb278e0 696 ieee80211_roc_setup(local);
21f83589 697
005e472b 698 return &local->hw;
f0706e82
JB		 699}
700EXPORT_SYMBOL(ieee80211_alloc_hw);
701
702int ieee80211_register_hw(struct ieee80211_hw *hw)
703{
704 struct ieee80211_local *local = hw_to_local(hw);
7527a782 705 int result, i;
8318d78a 706 enum ieee80211_band band;
be4a4b6a 707 int channels, max_bitrates;
ba0afa2f 708 bool supp_ht, supp_vht;
72d78728 709 netdev_features_t feature_whitelist;
25e47c18 710 static const u32 cipher_suites[] = {
5daa8a8e 711 /* keep WEP first, it may be removed below */
25e47c18
JB		 712 WLAN_CIPHER_SUITE_WEP40,
713 WLAN_CIPHER_SUITE_WEP104,
714 WLAN_CIPHER_SUITE_TKIP,
715 WLAN_CIPHER_SUITE_CCMP,
716
717 /* keep last -- depends on hw flags! */
718 WLAN_CIPHER_SUITE_AES_CMAC
719 };
8318d78a 720
3a25a8c8
JB		 721 if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
722 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
723 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
724 return -EINVAL;
725
38bb3e9d 726#ifdef CONFIG_PM
dfb89c56
JB		 727 if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) &&
728 (!local->ops->suspend || !local->ops->resume))
eecc4800 729 return -EINVAL;
dfb89c56 730#endif
eecc4800 731
885bd8ec
EP		 732 if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan)
733 return -EINVAL;
734
fe57d9f5
JB		 735 if (!local->use_chanctx) {
736 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
737 const struct ieee80211_iface_combination *comb;
738
739 comb = &local->hw.wiphy->iface_combinations[i];
740
741 if (comb->num_different_channels > 1)
742 return -EINVAL;
743 }
744
745 /*
746 * WDS is currently prohibited when channel contexts are used
747 * because there's no clear definition of which channel WDS
748 * type interfaces use
749 */
750 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
751 return -EINVAL;
752 }
753
72d78728
AN		 754 /* Only HW csum features are currently compatible with mac80211 */
755 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
756 NETIF_F_HW_CSUM;
757 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
758 return -EINVAL;
759
78be49ec
HS		 760 if (hw->max_report_rates == 0)
761 hw->max_report_rates = hw->max_rates;
762
8318d78a
JB		 763 /*
764 * generic code guarantees at least one band,
765 * set this very early because much code assumes
766 * that hw.conf.channel is assigned
767 */
2a519311 768 channels = 0;
de95a54b 769 max_bitrates = 0;
5ef2d41a 770 supp_ht = false;
ba0afa2f 771 supp_vht = false;
8318d78a
JB		 772 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
773 struct ieee80211_supported_band *sband;
774
775 sband = local->hw.wiphy->bands[band];
de95a54b
JB		 776 if (!sband)
777 continue;
778 if (!local->oper_channel) {
8318d78a
JB		 779 /* init channel we're on */
780 local->hw.conf.channel =
58905ca5
JB		 781 local->oper_channel = &sband->channels[0];
782 local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
8318d78a 783 }
de95a54b
JB		 784 channels += sband->n_channels;
785
786 if (max_bitrates < sband->n_bitrates)
787 max_bitrates = sband->n_bitrates;
5ef2d41a 788 supp_ht = supp_ht || sband->ht_cap.ht_supported;
ba0afa2f 789 supp_vht = supp_vht || sband->vht_cap.vht_supported;
8318d78a 790 }
f0706e82 791
5ba63533
JB		 792 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
793 sizeof(void *) * channels, GFP_KERNEL);
794 if (!local->int_scan_req)
2a519311
JB		 795 return -ENOMEM;
796
c72e8d33
SW		 797 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
798 if (!local->hw.wiphy->bands[band])
799 continue;
800 local->int_scan_req->rates[band] = (u32) -1;
801 }
802
f59ac048 803 /* if low-level driver supports AP, we also support VLAN */
7527a782
JB		 804 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
805 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
806 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
807 }
f59ac048
LR		 808
809 /* mac80211 always supports monitor */
7527a782
JB		 810 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
811 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
812
8e621fc9
JB		 813 /*
814 * mac80211 doesn't support more than 1 channel, and also not more
815 * than one IBSS interface
816 */
817 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
818 const struct ieee80211_iface_combination *c;
819 int j;
820
821 c = &hw->wiphy->iface_combinations[i];
822
823 if (c->num_different_channels > 1)
7527a782 824 return -EINVAL;
f59ac048 825
8e621fc9
JB		 826 for (j = 0; j < c->n_limits; j++)
827 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
828 c->limits[j].max > 1)
829 return -EINVAL;
830 }
831
5eb5a52d
JB		 832#ifndef CONFIG_MAC80211_MESH
833 /* mesh depends on Kconfig, but drivers should set it if they want */
834 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
835#endif
836
1570ca59
JC		 837 /* if the underlying driver supports mesh, mac80211 will (at least)
838 * provide routing of mesh authentication frames to userspace */
839 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
840 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
841
a621fa4d
JB		 842 /* mac80211 supports control port protocol changing */
843 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
844
77965c97
JB		 845 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
846 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
847 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
848 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
849
ab13315a
KV		 850 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
851 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
852 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
853
de95a54b
JB		 854 /*
855 * Calculate scan IE length -- we need this to alloc
856 * memory and to subtract from the driver limit. It
dc9f48ce 857 * includes the DS Params, (extended) supported rates, and HT
de95a54b
JB		 858 * information -- SSID is the driver's responsibility.
859 */
dc9f48ce
JM		 860 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
861 3 /* DS Params */;
5ef2d41a
JB		 862 if (supp_ht)
863 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
de95a54b 864
ba0afa2f
MP		 865 if (supp_vht)
866 local->scan_ies_len +=
867 2 + sizeof(struct ieee80211_vht_capabilities);
868
de95a54b
JB		 869 if (!local->ops->hw_scan) {
870 /* For hw_scan, driver needs to set these up. */
871 local->hw.wiphy->max_scan_ssids = 4;
872 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
873 }
874
875 /*
876 * If the driver supports any scan IEs, then assume the
877 * limit includes the IEs mac80211 will add, otherwise
878 * leave it at zero and let the driver sort it out; we
879 * still pass our IEs to the driver but userspace will
880 * not be allowed to in that case.
881 */
882 if (local->hw.wiphy->max_scan_ie_len)
883 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
884
3ffc2a90
JB		 885 /* Set up cipher suites unless driver already did */
886 if (!local->hw.wiphy->cipher_suites) {
887 local->hw.wiphy->cipher_suites = cipher_suites;
888 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
889 if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
890 local->hw.wiphy->n_cipher_suites--;
891 }
5daa8a8e 892 if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
3ffc2a90
JB		 893 if (local->hw.wiphy->cipher_suites == cipher_suites) {
894 local->hw.wiphy->cipher_suites += 2;
895 local->hw.wiphy->n_cipher_suites -= 2;
896 } else {
897 u32 *suites;
898 int r, w = 0;
899
900 /* Filter out WEP */
901
902 suites = kmemdup(
903 local->hw.wiphy->cipher_suites,
904 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
905 GFP_KERNEL);
906 if (!suites)
907 return -ENOMEM;
908 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
909 u32 suite = local->hw.wiphy->cipher_suites[r];
910 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
911 suite == WLAN_CIPHER_SUITE_WEP104)
912 continue;
913 suites[w++] = suite;
914 }
915 local->hw.wiphy->cipher_suites = suites;
916 local->hw.wiphy->n_cipher_suites = w;
917 local->wiphy_ciphers_allocated = true;
918 }
5daa8a8e 919 }
25e47c18 920
21f83589
JB		 921 if (!local->ops->remain_on_channel)
922 local->hw.wiphy->max_remain_on_channel_duration = 5000;
a293911d 923
79f460ca
LC		 924 if (local->ops->sched_scan_start)
925 local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
926
dfe018bf
AN		 927 /* mac80211 based drivers don't support internal TDLS setup */
928 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
929 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
930
f0706e82
JB		 931 result = wiphy_register(local->hw.wiphy);
932 if (result < 0)
2a519311 933 goto fail_wiphy_register;
f0706e82 934
e2530083
JB		 935 /*
936 * We use the number of queues for feature tests (QoS, HT) internally
937 * so restrict them appropriately.
938 */
e2530083
JB		 939 if (hw->queues > IEEE80211_MAX_QUEUES)
940 hw->queues = IEEE80211_MAX_QUEUES;
e2530083 941
42935eca 942 local->workqueue =
99b88a0e 943 alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0);
42935eca 944 if (!local->workqueue) {
f0706e82
JB		 945 result = -ENOMEM;
946 goto fail_workqueue;
947 }
948
b306f453
JB		 949 /*
950 * The hardware needs headroom for sending the frame,
951 * and we need some headroom for passing the frame to monitor
952 * interfaces, but never both at the same time.
953 */
33ccad35 954 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
a2fe8166 955 IEEE80211_TX_STATUS_HEADROOM);
b306f453 956
e9f207f0
JB		 957 debugfs_hw_add(local);
958
b446918b
HS		 959 /*
960 * if the driver doesn't specify a max listen interval we
961 * use 5 which should be a safe default
962 */
ea95bba4 963 if (local->hw.max_listen_interval == 0)
b446918b 964 local->hw.max_listen_interval = 5;
ea95bba4
TW		 965
966 local->hw.conf.listen_interval = local->hw.max_listen_interval;
967
ff616381 968 local->dynamic_ps_forced_timeout = -1;
195e294d 969
d4c4a9a1 970 result = ieee80211_wep_init(local);
3473187d 971 if (result < 0)
0fb9a9ec
JP		 972 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
973 result);
d4c4a9a1 974
b57e6b56
MSS		 975 ieee80211_led_init(local);
976
f0706e82 977 rtnl_lock();
f0706e82 978
830f9038
JB		 979 result = ieee80211_init_rate_ctrl_alg(local,
980 hw->rate_control_algorithm);
f0706e82 981 if (result < 0) {
0fb9a9ec
JP		 982 wiphy_debug(local->hw.wiphy,
983 "Failed to initialize rate control algorithm\n");
f0706e82
JB		 984 goto fail_rate;
985 }
986
8dffff21
JB		 987 /* add one default STA interface if supported */
988 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
989 result = ieee80211_if_add(local, "wlan%d", NULL,
990 NL80211_IFTYPE_STATION, NULL);
991 if (result)
0fb9a9ec
JP		 992 wiphy_warn(local->hw.wiphy,
993 "Failed to add default virtual iface\n");
8dffff21 994 }
f0706e82 995
f0706e82
JB		 996 rtnl_unlock();
997
10f644a4
JB		 998 local->network_latency_notifier.notifier_call =
999 ieee80211_max_network_latency;
1000 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
1001 &local->network_latency_notifier);
10f644a4
JB		 1002 if (result) {
1003 rtnl_lock();
1004 goto fail_pm_qos;
1005 }
1006
26b36cfe 1007#ifdef CONFIG_INET
2b2c009e
JO		 1008 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1009 result = register_inetaddr_notifier(&local->ifa_notifier);
1010 if (result)
1011 goto fail_ifa;
26b36cfe 1012#endif
2b2c009e 1013
4e6cbfd0
JL		 1014 netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll,
1015 local->hw.napi_weight);
1016
f0706e82
JB		 1017 return 0;
1018
93c08c32 1019#ifdef CONFIG_INET
2b2c009e
JO		 1020 fail_ifa:
1021 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1022 &local->network_latency_notifier);
1023 rtnl_lock();
93c08c32 1024#endif
10f644a4
JB		 1025 fail_pm_qos:
1026 ieee80211_led_exit(local);
1027 ieee80211_remove_interfaces(local);
10f644a4 1028 fail_rate:
f0706e82 1029 rtnl_unlock();
d4c4a9a1 1030 ieee80211_wep_free(local);
f0706e82 1031 sta_info_stop(local);
42935eca 1032 destroy_workqueue(local->workqueue);
10f644a4 1033 fail_workqueue:
f0706e82 1034 wiphy_unregister(local->hw.wiphy);
10f644a4 1035 fail_wiphy_register:
3ffc2a90
JB		 1036 if (local->wiphy_ciphers_allocated)
1037 kfree(local->hw.wiphy->cipher_suites);
11ba964d 1038 kfree(local->int_scan_req);
f0706e82
JB		 1039 return result;
1040}
1041EXPORT_SYMBOL(ieee80211_register_hw);
1042
f0706e82
JB		 1043void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1044{
1045 struct ieee80211_local *local = hw_to_local(hw);
f0706e82
JB		 1046
1047 tasklet_kill(&local->tx_pending_tasklet);
1048 tasklet_kill(&local->tasklet);
1049
10f644a4
JB		 1050 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1051 &local->network_latency_notifier);
26b36cfe 1052#ifdef CONFIG_INET
2b2c009e 1053 unregister_inetaddr_notifier(&local->ifa_notifier);
26b36cfe 1054#endif
10f644a4 1055
f0706e82
JB		 1056 rtnl_lock();
1057
79010420
JB		 1058 /*
1059 * At this point, interface list manipulations are fine
1060 * because the driver cannot be handing us frames any
1061 * more and the tasklet is killed.
1062 */
75636525 1063 ieee80211_remove_interfaces(local);
5b2812e9 1064
f0706e82
JB		 1065 rtnl_unlock();
1066
258086a4 1067 cancel_work_sync(&local->restart_work);
3ac64bee
JB		 1068 cancel_work_sync(&local->reconfig_filter);
1069
f0706e82 1070 ieee80211_clear_tx_pending(local);
f0706e82
JB		 1071 rate_control_deinitialize(local);
1072
f64f9e71
JP		 1073 if (skb_queue_len(&local->skb_queue) ||
1074 skb_queue_len(&local->skb_queue_unreliable))
0fb9a9ec 1075 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
f0706e82
JB		 1076 skb_queue_purge(&local->skb_queue);
1077 skb_queue_purge(&local->skb_queue_unreliable);
24a8fdad 1078 skb_queue_purge(&local->rx_skb_queue);
f0706e82 1079
42935eca 1080 destroy_workqueue(local->workqueue);
f0706e82 1081 wiphy_unregister(local->hw.wiphy);
ecb44335 1082 sta_info_stop(local);
f0706e82
JB		 1083 ieee80211_wep_free(local);
1084 ieee80211_led_exit(local);
5ba63533 1085 kfree(local->int_scan_req);
f0706e82
JB		 1086}
1087EXPORT_SYMBOL(ieee80211_unregister_hw);
1088
a729cff8
JB		 1089static int ieee80211_free_ack_frame(int id, void *p, void *data)
1090{
1091 WARN_ONCE(1, "Have pending ack frames!\n");
1092 kfree_skb(p);
1093 return 0;
1094}
1095
f0706e82
JB		 1096void ieee80211_free_hw(struct ieee80211_hw *hw)
1097{
1098 struct ieee80211_local *local = hw_to_local(hw);
1099
c771c9d8 1100 mutex_destroy(&local->iflist_mtx);
a1699b75 1101 mutex_destroy(&local->mtx);
c771c9d8 1102
3ffc2a90
JB		 1103 if (local->wiphy_ciphers_allocated)
1104 kfree(local->hw.wiphy->cipher_suites);
1105
a729cff8
JB		 1106 idr_for_each(&local->ack_status_frames,
1107 ieee80211_free_ack_frame, NULL);
1108 idr_destroy(&local->ack_status_frames);
1109
f0706e82
JB		 1110 wiphy_free(local->hw.wiphy);
1111}
1112EXPORT_SYMBOL(ieee80211_free_hw);
1113
f0706e82
JB		 1114static int __init ieee80211_init(void)
1115{
1116 struct sk_buff *skb;
1117 int ret;
1118
e039fa4a
JB		 1119 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1120 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
c6a1fa12 1121 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
f0706e82 1122
cccf129f
FF		 1123 ret = rc80211_minstrel_init();
1124 if (ret)
1125 return ret;
1126
ec8aa669
FF		 1127 ret = rc80211_minstrel_ht_init();
1128 if (ret)
1129 goto err_minstrel;
1130
4b475898 1131 ret = rc80211_pid_init();
ad018375 1132 if (ret)
47846c9b 1133 goto err_pid;
f0706e82 1134
47846c9b
JB		 1135 ret = ieee80211_iface_init();
1136 if (ret)
1137 goto err_netdev;
e9f207f0 1138
f0706e82 1139 return 0;
47846c9b
JB		 1140 err_netdev:
1141 rc80211_pid_exit();
1142 err_pid:
ec8aa669
FF		 1143 rc80211_minstrel_ht_exit();
1144 err_minstrel:
47846c9b
JB		 1145 rc80211_minstrel_exit();
1146
1147 return ret;
f0706e82
JB		 1148}
1149
f0706e82
JB		 1150static void __exit ieee80211_exit(void)
1151{
4b475898 1152 rc80211_pid_exit();
ec8aa669 1153 rc80211_minstrel_ht_exit();
cccf129f 1154 rc80211_minstrel_exit();
ac71c691 1155
f7a92144
LCC		 1156 if (mesh_allocated)
1157 ieee80211s_stop();
902acc78 1158
47846c9b 1159 ieee80211_iface_exit();
d07c7cf4
JB		 1160
1161 rcu_barrier();
f0706e82
JB		 1162}
1163
1164
ca9938fe 1165subsys_initcall(ieee80211_init);
f0706e82
JB		 1166module_exit(ieee80211_exit);
1167
1168MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1169MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)