2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
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.
11 #include <net/mac80211.h>
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>
20 #include <linux/rtnetlink.h>
21 #include <linux/bitmap.h>
22 #include <linux/pm_qos_params.h>
23 #include <linux/inetdevice.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
27 #include "ieee80211_i.h"
28 #include "driver-ops.h"
37 bool ieee80211_disable_40mhz_24ghz
;
38 module_param(ieee80211_disable_40mhz_24ghz
, bool, 0644);
39 MODULE_PARM_DESC(ieee80211_disable_40mhz_24ghz
,
40 "Disable 40MHz support in the 2.4GHz band");
42 void ieee80211_configure_filter(struct ieee80211_local
*local
)
45 unsigned int changed_flags
;
46 unsigned int new_flags
= 0;
48 if (atomic_read(&local
->iff_promiscs
))
49 new_flags
|= FIF_PROMISC_IN_BSS
;
51 if (atomic_read(&local
->iff_allmultis
))
52 new_flags
|= FIF_ALLMULTI
;
54 if (local
->monitors
|| local
->scanning
)
55 new_flags
|= FIF_BCN_PRBRESP_PROMISC
;
57 if (local
->fif_fcsfail
)
58 new_flags
|= FIF_FCSFAIL
;
60 if (local
->fif_plcpfail
)
61 new_flags
|= FIF_PLCPFAIL
;
63 if (local
->fif_control
)
64 new_flags
|= FIF_CONTROL
;
66 if (local
->fif_other_bss
)
67 new_flags
|= FIF_OTHER_BSS
;
69 if (local
->fif_pspoll
)
70 new_flags
|= FIF_PSPOLL
;
72 spin_lock_bh(&local
->filter_lock
);
73 changed_flags
= local
->filter_flags
^ new_flags
;
75 mc
= drv_prepare_multicast(local
, &local
->mc_list
);
76 spin_unlock_bh(&local
->filter_lock
);
81 drv_configure_filter(local
, changed_flags
, &new_flags
, mc
);
83 WARN_ON(new_flags
& (1<<31));
85 local
->filter_flags
= new_flags
& ~(1<<31);
88 static void ieee80211_reconfig_filter(struct work_struct
*work
)
90 struct ieee80211_local
*local
=
91 container_of(work
, struct ieee80211_local
, reconfig_filter
);
93 ieee80211_configure_filter(local
);
96 int ieee80211_hw_config(struct ieee80211_local
*local
, u32 changed
)
98 struct ieee80211_channel
*chan
, *scan_chan
;
101 enum nl80211_channel_type channel_type
;
105 scan_chan
= local
->scan_channel
;
109 channel_type
= NL80211_CHAN_NO_HT
;
110 } else if (local
->tmp_channel
) {
111 chan
= scan_chan
= local
->tmp_channel
;
112 channel_type
= local
->tmp_channel_type
;
114 chan
= local
->oper_channel
;
115 channel_type
= local
->_oper_channel_type
;
118 if (chan
!= local
->hw
.conf
.channel
||
119 channel_type
!= local
->hw
.conf
.channel_type
) {
120 local
->hw
.conf
.channel
= chan
;
121 local
->hw
.conf
.channel_type
= channel_type
;
122 changed
|= IEEE80211_CONF_CHANGE_CHANNEL
;
125 if (!conf_is_ht(&local
->hw
.conf
)) {
127 * mac80211.h documents that this is only valid
128 * when the channel is set to an HT type, and
129 * that otherwise STATIC is used.
131 local
->hw
.conf
.smps_mode
= IEEE80211_SMPS_STATIC
;
132 } else if (local
->hw
.conf
.smps_mode
!= local
->smps_mode
) {
133 local
->hw
.conf
.smps_mode
= local
->smps_mode
;
134 changed
|= IEEE80211_CONF_CHANGE_SMPS
;
138 power
= chan
->max_power
;
140 power
= local
->power_constr_level
?
141 (chan
->max_power
- local
->power_constr_level
) :
144 if (local
->user_power_level
>= 0)
145 power
= min(power
, local
->user_power_level
);
147 if (local
->hw
.conf
.power_level
!= power
) {
148 changed
|= IEEE80211_CONF_CHANGE_POWER
;
149 local
->hw
.conf
.power_level
= power
;
152 if (changed
&& local
->open_count
) {
153 ret
= drv_config(local
, changed
);
156 * HW reconfiguration should never fail, the driver has told
157 * us what it can support so it should live up to that promise.
160 * rfkill is not integrated with mac80211 and a
161 * configuration command can thus fail if hardware rfkill
164 * FIXME: integrate rfkill with mac80211 and then add this
174 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
177 struct ieee80211_local
*local
= sdata
->local
;
178 static const u8 zero
[ETH_ALEN
] = { 0 };
183 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
) {
185 * While not associated, claim a BSSID of all-zeroes
186 * so that drivers don't do any weird things with the
187 * BSSID at that time.
189 if (sdata
->vif
.bss_conf
.assoc
)
190 sdata
->vif
.bss_conf
.bssid
= sdata
->u
.mgd
.bssid
;
192 sdata
->vif
.bss_conf
.bssid
= zero
;
193 } else if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
)
194 sdata
->vif
.bss_conf
.bssid
= sdata
->u
.ibss
.bssid
;
195 else if (sdata
->vif
.type
== NL80211_IFTYPE_AP
)
196 sdata
->vif
.bss_conf
.bssid
= sdata
->vif
.addr
;
197 else if (ieee80211_vif_is_mesh(&sdata
->vif
)) {
198 sdata
->vif
.bss_conf
.bssid
= zero
;
204 switch (sdata
->vif
.type
) {
205 case NL80211_IFTYPE_AP
:
206 case NL80211_IFTYPE_ADHOC
:
207 case NL80211_IFTYPE_MESH_POINT
:
210 /* do not warn to simplify caller in scan.c */
211 changed
&= ~BSS_CHANGED_BEACON_ENABLED
;
212 if (WARN_ON(changed
& BSS_CHANGED_BEACON
))
217 if (changed
& BSS_CHANGED_BEACON_ENABLED
) {
218 if (local
->quiescing
|| !ieee80211_sdata_running(sdata
) ||
219 test_bit(SCAN_SW_SCANNING
, &local
->scanning
)) {
220 sdata
->vif
.bss_conf
.enable_beacon
= false;
223 * Beacon should be enabled, but AP mode must
224 * check whether there is a beacon configured.
226 switch (sdata
->vif
.type
) {
227 case NL80211_IFTYPE_AP
:
228 sdata
->vif
.bss_conf
.enable_beacon
=
229 !!sdata
->u
.ap
.beacon
;
231 case NL80211_IFTYPE_ADHOC
:
232 sdata
->vif
.bss_conf
.enable_beacon
=
233 !!sdata
->u
.ibss
.presp
;
235 case NL80211_IFTYPE_MESH_POINT
:
236 sdata
->vif
.bss_conf
.enable_beacon
= true;
246 drv_bss_info_changed(local
, sdata
, &sdata
->vif
.bss_conf
, changed
);
249 u32
ieee80211_reset_erp_info(struct ieee80211_sub_if_data
*sdata
)
251 sdata
->vif
.bss_conf
.use_cts_prot
= false;
252 sdata
->vif
.bss_conf
.use_short_preamble
= false;
253 sdata
->vif
.bss_conf
.use_short_slot
= false;
254 return BSS_CHANGED_ERP_CTS_PROT
|
255 BSS_CHANGED_ERP_PREAMBLE
|
256 BSS_CHANGED_ERP_SLOT
;
259 static void ieee80211_tasklet_handler(unsigned long data
)
261 struct ieee80211_local
*local
= (struct ieee80211_local
*) data
;
264 while ((skb
= skb_dequeue(&local
->skb_queue
)) ||
265 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
266 switch (skb
->pkt_type
) {
267 case IEEE80211_RX_MSG
:
268 /* Clear skb->pkt_type in order to not confuse kernel
271 ieee80211_rx(local_to_hw(local
), skb
);
273 case IEEE80211_TX_STATUS_MSG
:
275 ieee80211_tx_status(local_to_hw(local
), skb
);
278 WARN(1, "mac80211: Packet is of unknown type %d\n",
286 static void ieee80211_restart_work(struct work_struct
*work
)
288 struct ieee80211_local
*local
=
289 container_of(work
, struct ieee80211_local
, restart_work
);
292 ieee80211_reconfig(local
);
296 void ieee80211_restart_hw(struct ieee80211_hw
*hw
)
298 struct ieee80211_local
*local
= hw_to_local(hw
);
300 trace_api_restart_hw(local
);
302 /* use this reason, __ieee80211_resume will unblock it */
303 ieee80211_stop_queues_by_reason(hw
,
304 IEEE80211_QUEUE_STOP_REASON_SUSPEND
);
306 schedule_work(&local
->restart_work
);
308 EXPORT_SYMBOL(ieee80211_restart_hw
);
310 static void ieee80211_recalc_smps_work(struct work_struct
*work
)
312 struct ieee80211_local
*local
=
313 container_of(work
, struct ieee80211_local
, recalc_smps
);
315 mutex_lock(&local
->iflist_mtx
);
316 ieee80211_recalc_smps(local
, NULL
);
317 mutex_unlock(&local
->iflist_mtx
);
321 static int ieee80211_ifa_changed(struct notifier_block
*nb
,
322 unsigned long data
, void *arg
)
324 struct in_ifaddr
*ifa
= arg
;
325 struct ieee80211_local
*local
=
326 container_of(nb
, struct ieee80211_local
,
328 struct net_device
*ndev
= ifa
->ifa_dev
->dev
;
329 struct wireless_dev
*wdev
= ndev
->ieee80211_ptr
;
330 struct in_device
*idev
;
331 struct ieee80211_sub_if_data
*sdata
;
332 struct ieee80211_bss_conf
*bss_conf
;
333 struct ieee80211_if_managed
*ifmgd
;
336 if (!netif_running(ndev
))
339 /* Make sure it's our interface that got changed */
343 if (wdev
->wiphy
!= local
->hw
.wiphy
)
346 sdata
= IEEE80211_DEV_TO_SUB_IF(ndev
);
347 bss_conf
= &sdata
->vif
.bss_conf
;
349 /* ARP filtering is only supported in managed mode */
350 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)
353 idev
= sdata
->dev
->ip_ptr
;
357 ifmgd
= &sdata
->u
.mgd
;
358 mutex_lock(&ifmgd
->mtx
);
360 /* Copy the addresses to the bss_conf list */
361 ifa
= idev
->ifa_list
;
362 while (c
< IEEE80211_BSS_ARP_ADDR_LIST_LEN
&& ifa
) {
363 bss_conf
->arp_addr_list
[c
] = ifa
->ifa_address
;
368 /* If not all addresses fit the list, disable filtering */
370 sdata
->arp_filter_state
= false;
373 sdata
->arp_filter_state
= true;
375 bss_conf
->arp_addr_cnt
= c
;
377 /* Configure driver only if associated */
378 if (ifmgd
->associated
) {
379 bss_conf
->arp_filter_enabled
= sdata
->arp_filter_state
;
380 ieee80211_bss_info_change_notify(sdata
,
381 BSS_CHANGED_ARP_FILTER
);
384 mutex_unlock(&ifmgd
->mtx
);
390 struct ieee80211_hw
*ieee80211_alloc_hw(size_t priv_data_len
,
391 const struct ieee80211_ops
*ops
)
393 struct ieee80211_local
*local
;
397 /* Ensure 32-byte alignment of our private data and hw private data.
398 * We use the wiphy priv data for both our ieee80211_local and for
399 * the driver's private data
401 * In memory it'll be like this:
403 * +-------------------------+
405 * +-------------------------+
406 * | struct ieee80211_local |
407 * +-------------------------+
408 * | driver's private data |
409 * +-------------------------+
412 priv_size
= ALIGN(sizeof(*local
), NETDEV_ALIGN
) + priv_data_len
;
414 wiphy
= wiphy_new(&mac80211_config_ops
, priv_size
);
419 wiphy
->flags
|= WIPHY_FLAG_NETNS_OK
|
420 WIPHY_FLAG_4ADDR_AP
|
421 WIPHY_FLAG_4ADDR_STATION
;
422 wiphy
->privid
= mac80211_wiphy_privid
;
424 wiphy
->bss_priv_size
= sizeof(struct ieee80211_bss
);
426 local
= wiphy_priv(wiphy
);
428 local
->hw
.wiphy
= wiphy
;
430 local
->hw
.priv
= (char *)local
+ ALIGN(sizeof(*local
), NETDEV_ALIGN
);
435 BUG_ON(!ops
->config
);
436 BUG_ON(!ops
->add_interface
);
437 BUG_ON(!ops
->remove_interface
);
438 BUG_ON(!ops
->configure_filter
);
441 /* set up some defaults */
442 local
->hw
.queues
= 1;
443 local
->hw
.max_rates
= 1;
444 local
->hw
.conf
.long_frame_max_tx_count
= wiphy
->retry_long
;
445 local
->hw
.conf
.short_frame_max_tx_count
= wiphy
->retry_short
;
446 local
->user_power_level
= -1;
447 local
->uapsd_queues
= IEEE80211_DEFAULT_UAPSD_QUEUES
;
448 local
->uapsd_max_sp_len
= IEEE80211_DEFAULT_MAX_SP_LEN
;
450 INIT_LIST_HEAD(&local
->interfaces
);
452 __hw_addr_init(&local
->mc_list
);
454 mutex_init(&local
->iflist_mtx
);
455 mutex_init(&local
->scan_mtx
);
457 mutex_init(&local
->key_mtx
);
458 spin_lock_init(&local
->filter_lock
);
459 spin_lock_init(&local
->queue_stop_reason_lock
);
461 INIT_DELAYED_WORK(&local
->scan_work
, ieee80211_scan_work
);
463 ieee80211_work_init(local
);
465 INIT_WORK(&local
->restart_work
, ieee80211_restart_work
);
467 INIT_WORK(&local
->reconfig_filter
, ieee80211_reconfig_filter
);
468 INIT_WORK(&local
->recalc_smps
, ieee80211_recalc_smps_work
);
469 local
->smps_mode
= IEEE80211_SMPS_OFF
;
471 INIT_WORK(&local
->dynamic_ps_enable_work
,
472 ieee80211_dynamic_ps_enable_work
);
473 INIT_WORK(&local
->dynamic_ps_disable_work
,
474 ieee80211_dynamic_ps_disable_work
);
475 setup_timer(&local
->dynamic_ps_timer
,
476 ieee80211_dynamic_ps_timer
, (unsigned long) local
);
478 sta_info_init(local
);
480 for (i
= 0; i
< IEEE80211_MAX_QUEUES
; i
++) {
481 skb_queue_head_init(&local
->pending
[i
]);
482 atomic_set(&local
->agg_queue_stop
[i
], 0);
484 tasklet_init(&local
->tx_pending_tasklet
, ieee80211_tx_pending
,
485 (unsigned long)local
);
487 tasklet_init(&local
->tasklet
,
488 ieee80211_tasklet_handler
,
489 (unsigned long) local
);
491 skb_queue_head_init(&local
->skb_queue
);
492 skb_queue_head_init(&local
->skb_queue_unreliable
);
494 return local_to_hw(local
);
496 EXPORT_SYMBOL(ieee80211_alloc_hw
);
498 int ieee80211_register_hw(struct ieee80211_hw
*hw
)
500 struct ieee80211_local
*local
= hw_to_local(hw
);
502 enum ieee80211_band band
;
503 int channels
, max_bitrates
;
505 static const u32 cipher_suites
[] = {
506 WLAN_CIPHER_SUITE_WEP40
,
507 WLAN_CIPHER_SUITE_WEP104
,
508 WLAN_CIPHER_SUITE_TKIP
,
509 WLAN_CIPHER_SUITE_CCMP
,
511 /* keep last -- depends on hw flags! */
512 WLAN_CIPHER_SUITE_AES_CMAC
516 * generic code guarantees at least one band,
517 * set this very early because much code assumes
518 * that hw.conf.channel is assigned
523 for (band
= 0; band
< IEEE80211_NUM_BANDS
; band
++) {
524 struct ieee80211_supported_band
*sband
;
526 sband
= local
->hw
.wiphy
->bands
[band
];
529 if (!local
->oper_channel
) {
530 /* init channel we're on */
531 local
->hw
.conf
.channel
=
532 local
->oper_channel
= &sband
->channels
[0];
533 local
->hw
.conf
.channel_type
= NL80211_CHAN_NO_HT
;
535 channels
+= sband
->n_channels
;
537 if (max_bitrates
< sband
->n_bitrates
)
538 max_bitrates
= sband
->n_bitrates
;
539 supp_ht
= supp_ht
|| sband
->ht_cap
.ht_supported
;
542 local
->int_scan_req
= kzalloc(sizeof(*local
->int_scan_req
) +
543 sizeof(void *) * channels
, GFP_KERNEL
);
544 if (!local
->int_scan_req
)
547 /* if low-level driver supports AP, we also support VLAN */
548 if (local
->hw
.wiphy
->interface_modes
& BIT(NL80211_IFTYPE_AP
))
549 local
->hw
.wiphy
->interface_modes
|= BIT(NL80211_IFTYPE_AP_VLAN
);
551 /* mac80211 always supports monitor */
552 local
->hw
.wiphy
->interface_modes
|= BIT(NL80211_IFTYPE_MONITOR
);
554 if (local
->hw
.flags
& IEEE80211_HW_SIGNAL_DBM
)
555 local
->hw
.wiphy
->signal_type
= CFG80211_SIGNAL_TYPE_MBM
;
556 else if (local
->hw
.flags
& IEEE80211_HW_SIGNAL_UNSPEC
)
557 local
->hw
.wiphy
->signal_type
= CFG80211_SIGNAL_TYPE_UNSPEC
;
559 WARN((local
->hw
.flags
& IEEE80211_HW_SUPPORTS_UAPSD
)
560 && (local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
),
561 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
564 * Calculate scan IE length -- we need this to alloc
565 * memory and to subtract from the driver limit. It
566 * includes the (extended) supported rates and HT
567 * information -- SSID is the driver's responsibility.
569 local
->scan_ies_len
= 4 + max_bitrates
; /* (ext) supp rates */
571 local
->scan_ies_len
+= 2 + sizeof(struct ieee80211_ht_cap
);
573 if (!local
->ops
->hw_scan
) {
574 /* For hw_scan, driver needs to set these up. */
575 local
->hw
.wiphy
->max_scan_ssids
= 4;
576 local
->hw
.wiphy
->max_scan_ie_len
= IEEE80211_MAX_DATA_LEN
;
580 * If the driver supports any scan IEs, then assume the
581 * limit includes the IEs mac80211 will add, otherwise
582 * leave it at zero and let the driver sort it out; we
583 * still pass our IEs to the driver but userspace will
584 * not be allowed to in that case.
586 if (local
->hw
.wiphy
->max_scan_ie_len
)
587 local
->hw
.wiphy
->max_scan_ie_len
-= local
->scan_ies_len
;
589 local
->hw
.wiphy
->cipher_suites
= cipher_suites
;
590 local
->hw
.wiphy
->n_cipher_suites
= ARRAY_SIZE(cipher_suites
);
591 if (!(local
->hw
.flags
& IEEE80211_HW_MFP_CAPABLE
))
592 local
->hw
.wiphy
->n_cipher_suites
--;
594 result
= wiphy_register(local
->hw
.wiphy
);
596 goto fail_wiphy_register
;
599 * We use the number of queues for feature tests (QoS, HT) internally
600 * so restrict them appropriately.
602 if (hw
->queues
> IEEE80211_MAX_QUEUES
)
603 hw
->queues
= IEEE80211_MAX_QUEUES
;
606 create_singlethread_workqueue(wiphy_name(local
->hw
.wiphy
));
607 if (!local
->workqueue
) {
613 * The hardware needs headroom for sending the frame,
614 * and we need some headroom for passing the frame to monitor
615 * interfaces, but never both at the same time.
617 BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM
!=
618 sizeof(struct ieee80211_tx_status_rtap_hdr
));
619 local
->tx_headroom
= max_t(unsigned int , local
->hw
.extra_tx_headroom
,
620 sizeof(struct ieee80211_tx_status_rtap_hdr
));
622 debugfs_hw_add(local
);
625 * if the driver doesn't specify a max listen interval we
626 * use 5 which should be a safe default
628 if (local
->hw
.max_listen_interval
== 0)
629 local
->hw
.max_listen_interval
= 5;
631 local
->hw
.conf
.listen_interval
= local
->hw
.max_listen_interval
;
633 local
->dynamic_ps_forced_timeout
= -1;
635 result
= sta_info_start(local
);
639 result
= ieee80211_wep_init(local
);
641 printk(KERN_DEBUG
"%s: Failed to initialize wep: %d\n",
642 wiphy_name(local
->hw
.wiphy
), result
);
646 result
= ieee80211_init_rate_ctrl_alg(local
,
647 hw
->rate_control_algorithm
);
649 printk(KERN_DEBUG
"%s: Failed to initialize rate control "
650 "algorithm\n", wiphy_name(local
->hw
.wiphy
));
654 /* add one default STA interface if supported */
655 if (local
->hw
.wiphy
->interface_modes
& BIT(NL80211_IFTYPE_STATION
)) {
656 result
= ieee80211_if_add(local
, "wlan%d", NULL
,
657 NL80211_IFTYPE_STATION
, NULL
);
659 printk(KERN_WARNING
"%s: Failed to add default virtual iface\n",
660 wiphy_name(local
->hw
.wiphy
));
665 ieee80211_led_init(local
);
667 local
->network_latency_notifier
.notifier_call
=
668 ieee80211_max_network_latency
;
669 result
= pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY
,
670 &local
->network_latency_notifier
);
677 local
->ifa_notifier
.notifier_call
= ieee80211_ifa_changed
;
678 result
= register_inetaddr_notifier(&local
->ifa_notifier
);
686 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY
,
687 &local
->network_latency_notifier
);
690 ieee80211_led_exit(local
);
691 ieee80211_remove_interfaces(local
);
694 ieee80211_wep_free(local
);
695 sta_info_stop(local
);
697 destroy_workqueue(local
->workqueue
);
699 wiphy_unregister(local
->hw
.wiphy
);
701 kfree(local
->int_scan_req
);
704 EXPORT_SYMBOL(ieee80211_register_hw
);
706 void ieee80211_unregister_hw(struct ieee80211_hw
*hw
)
708 struct ieee80211_local
*local
= hw_to_local(hw
);
710 tasklet_kill(&local
->tx_pending_tasklet
);
711 tasklet_kill(&local
->tasklet
);
713 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY
,
714 &local
->network_latency_notifier
);
716 unregister_inetaddr_notifier(&local
->ifa_notifier
);
722 * At this point, interface list manipulations are fine
723 * because the driver cannot be handing us frames any
724 * more and the tasklet is killed.
726 ieee80211_remove_interfaces(local
);
730 cancel_work_sync(&local
->reconfig_filter
);
732 ieee80211_clear_tx_pending(local
);
733 sta_info_stop(local
);
734 rate_control_deinitialize(local
);
736 if (skb_queue_len(&local
->skb_queue
) ||
737 skb_queue_len(&local
->skb_queue_unreliable
))
738 printk(KERN_WARNING
"%s: skb_queue not empty\n",
739 wiphy_name(local
->hw
.wiphy
));
740 skb_queue_purge(&local
->skb_queue
);
741 skb_queue_purge(&local
->skb_queue_unreliable
);
743 destroy_workqueue(local
->workqueue
);
744 wiphy_unregister(local
->hw
.wiphy
);
745 ieee80211_wep_free(local
);
746 ieee80211_led_exit(local
);
747 kfree(local
->int_scan_req
);
749 EXPORT_SYMBOL(ieee80211_unregister_hw
);
751 void ieee80211_free_hw(struct ieee80211_hw
*hw
)
753 struct ieee80211_local
*local
= hw_to_local(hw
);
755 mutex_destroy(&local
->iflist_mtx
);
756 mutex_destroy(&local
->scan_mtx
);
758 wiphy_free(local
->hw
.wiphy
);
760 EXPORT_SYMBOL(ieee80211_free_hw
);
762 static int __init
ieee80211_init(void)
767 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info
) > sizeof(skb
->cb
));
768 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info
, driver_data
) +
769 IEEE80211_TX_INFO_DRIVER_DATA_SIZE
> sizeof(skb
->cb
));
771 ret
= rc80211_minstrel_init();
775 ret
= rc80211_minstrel_ht_init();
779 ret
= rc80211_pid_init();
783 ret
= ieee80211_iface_init();
791 rc80211_minstrel_ht_exit();
793 rc80211_minstrel_exit();
798 static void __exit
ieee80211_exit(void)
801 rc80211_minstrel_ht_exit();
802 rc80211_minstrel_exit();
805 * For key todo, it'll be empty by now but the work
806 * might still be scheduled.
808 flush_scheduled_work();
813 ieee80211_iface_exit();
817 subsys_initcall(ieee80211_init
);
818 module_exit(ieee80211_exit
);
820 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
821 MODULE_LICENSE("GPL");