2 * This is the linux wireless configuration interface.
4 * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net>
8 #include <linux/module.h>
10 #include <linux/list.h>
11 #include <linux/nl80211.h>
12 #include <linux/debugfs.h>
13 #include <linux/notifier.h>
14 #include <linux/device.h>
15 #include <linux/rtnetlink.h>
16 #include <net/genetlink.h>
17 #include <net/cfg80211.h>
22 #include "wext-compat.h"
24 /* name for sysfs, %d is appended */
25 #define PHY_NAME "phy"
27 MODULE_AUTHOR("Johannes Berg");
28 MODULE_LICENSE("GPL");
29 MODULE_DESCRIPTION("wireless configuration support");
31 /* RCU might be appropriate here since we usually
32 * only read the list, and that can happen quite
33 * often because we need to do it for each command */
34 LIST_HEAD(cfg80211_rdev_list
);
37 * This is used to protect the cfg80211_rdev_list
39 DEFINE_MUTEX(cfg80211_mutex
);
42 static struct dentry
*ieee80211_debugfs_dir
;
44 /* requires cfg80211_mutex to be held! */
45 struct cfg80211_registered_device
*cfg80211_rdev_by_wiphy_idx(int wiphy_idx
)
47 struct cfg80211_registered_device
*result
= NULL
, *rdev
;
49 if (!wiphy_idx_valid(wiphy_idx
))
52 assert_cfg80211_lock();
54 list_for_each_entry(rdev
, &cfg80211_rdev_list
, list
) {
55 if (rdev
->wiphy_idx
== wiphy_idx
) {
64 int get_wiphy_idx(struct wiphy
*wiphy
)
66 struct cfg80211_registered_device
*rdev
;
68 return WIPHY_IDX_STALE
;
69 rdev
= wiphy_to_dev(wiphy
);
70 return rdev
->wiphy_idx
;
73 /* requires cfg80211_rdev_mutex to be held! */
74 struct wiphy
*wiphy_idx_to_wiphy(int wiphy_idx
)
76 struct cfg80211_registered_device
*rdev
;
78 if (!wiphy_idx_valid(wiphy_idx
))
81 assert_cfg80211_lock();
83 rdev
= cfg80211_rdev_by_wiphy_idx(wiphy_idx
);
89 /* requires cfg80211_mutex to be held! */
90 struct cfg80211_registered_device
*
91 __cfg80211_rdev_from_info(struct genl_info
*info
)
94 struct cfg80211_registered_device
*bywiphyidx
= NULL
, *byifidx
= NULL
;
95 struct net_device
*dev
;
98 assert_cfg80211_lock();
100 if (info
->attrs
[NL80211_ATTR_WIPHY
]) {
101 bywiphyidx
= cfg80211_rdev_by_wiphy_idx(
102 nla_get_u32(info
->attrs
[NL80211_ATTR_WIPHY
]));
106 if (info
->attrs
[NL80211_ATTR_IFINDEX
]) {
107 ifindex
= nla_get_u32(info
->attrs
[NL80211_ATTR_IFINDEX
]);
108 dev
= dev_get_by_index(genl_info_net(info
), ifindex
);
110 if (dev
->ieee80211_ptr
)
112 wiphy_to_dev(dev
->ieee80211_ptr
->wiphy
);
118 if (bywiphyidx
&& byifidx
) {
119 if (bywiphyidx
!= byifidx
)
120 return ERR_PTR(-EINVAL
);
122 return bywiphyidx
; /* == byifidx */
133 struct cfg80211_registered_device
*
134 cfg80211_get_dev_from_info(struct genl_info
*info
)
136 struct cfg80211_registered_device
*rdev
;
138 mutex_lock(&cfg80211_mutex
);
139 rdev
= __cfg80211_rdev_from_info(info
);
141 /* if it is not an error we grab the lock on
142 * it to assure it won't be going away while
143 * we operate on it */
145 mutex_lock(&rdev
->mtx
);
147 mutex_unlock(&cfg80211_mutex
);
152 struct cfg80211_registered_device
*
153 cfg80211_get_dev_from_ifindex(struct net
*net
, int ifindex
)
155 struct cfg80211_registered_device
*rdev
= ERR_PTR(-ENODEV
);
156 struct net_device
*dev
;
158 mutex_lock(&cfg80211_mutex
);
159 dev
= dev_get_by_index(net
, ifindex
);
162 if (dev
->ieee80211_ptr
) {
163 rdev
= wiphy_to_dev(dev
->ieee80211_ptr
->wiphy
);
164 mutex_lock(&rdev
->mtx
);
166 rdev
= ERR_PTR(-ENODEV
);
169 mutex_unlock(&cfg80211_mutex
);
173 /* requires cfg80211_mutex to be held */
174 int cfg80211_dev_rename(struct cfg80211_registered_device
*rdev
,
177 struct cfg80211_registered_device
*rdev2
;
178 int wiphy_idx
, taken
= -1, result
, digits
;
180 assert_cfg80211_lock();
182 /* prohibit calling the thing phy%d when %d is not its number */
183 sscanf(newname
, PHY_NAME
"%d%n", &wiphy_idx
, &taken
);
184 if (taken
== strlen(newname
) && wiphy_idx
!= rdev
->wiphy_idx
) {
185 /* count number of places needed to print wiphy_idx */
187 while (wiphy_idx
/= 10)
190 * deny the name if it is phy<idx> where <idx> is printed
191 * without leading zeroes. taken == strlen(newname) here
193 if (taken
== strlen(PHY_NAME
) + digits
)
198 /* Ignore nop renames */
199 if (strcmp(newname
, dev_name(&rdev
->wiphy
.dev
)) == 0)
202 /* Ensure another device does not already have this name. */
203 list_for_each_entry(rdev2
, &cfg80211_rdev_list
, list
)
204 if (strcmp(newname
, dev_name(&rdev2
->wiphy
.dev
)) == 0)
207 result
= device_rename(&rdev
->wiphy
.dev
, newname
);
211 if (rdev
->wiphy
.debugfsdir
&&
212 !debugfs_rename(rdev
->wiphy
.debugfsdir
->d_parent
,
213 rdev
->wiphy
.debugfsdir
,
214 rdev
->wiphy
.debugfsdir
->d_parent
,
216 printk(KERN_ERR
"cfg80211: failed to rename debugfs dir to %s!\n",
219 nl80211_notify_dev_rename(rdev
);
224 int cfg80211_switch_netns(struct cfg80211_registered_device
*rdev
,
227 struct wireless_dev
*wdev
;
230 if (!rdev
->wiphy
.netnsok
)
233 list_for_each_entry(wdev
, &rdev
->netdev_list
, list
) {
234 wdev
->netdev
->features
&= ~NETIF_F_NETNS_LOCAL
;
235 err
= dev_change_net_namespace(wdev
->netdev
, net
, "wlan%d");
238 wdev
->netdev
->features
|= NETIF_F_NETNS_LOCAL
;
242 /* failed -- clean up to old netns */
243 net
= wiphy_net(&rdev
->wiphy
);
245 list_for_each_entry_continue_reverse(wdev
, &rdev
->netdev_list
,
247 wdev
->netdev
->features
&= ~NETIF_F_NETNS_LOCAL
;
248 err
= dev_change_net_namespace(wdev
->netdev
, net
,
251 wdev
->netdev
->features
|= NETIF_F_NETNS_LOCAL
;
255 wiphy_net_set(&rdev
->wiphy
, net
);
260 static void cfg80211_rfkill_poll(struct rfkill
*rfkill
, void *data
)
262 struct cfg80211_registered_device
*rdev
= data
;
264 rdev
->ops
->rfkill_poll(&rdev
->wiphy
);
267 static int cfg80211_rfkill_set_block(void *data
, bool blocked
)
269 struct cfg80211_registered_device
*rdev
= data
;
270 struct wireless_dev
*wdev
;
276 mutex_lock(&rdev
->devlist_mtx
);
278 list_for_each_entry(wdev
, &rdev
->netdev_list
, list
)
279 dev_close(wdev
->netdev
);
281 mutex_unlock(&rdev
->devlist_mtx
);
287 static void cfg80211_rfkill_sync_work(struct work_struct
*work
)
289 struct cfg80211_registered_device
*rdev
;
291 rdev
= container_of(work
, struct cfg80211_registered_device
, rfkill_sync
);
292 cfg80211_rfkill_set_block(rdev
, rfkill_blocked(rdev
->rfkill
));
295 static void cfg80211_process_events(struct wireless_dev
*wdev
)
297 struct cfg80211_event
*ev
;
300 spin_lock_irqsave(&wdev
->event_lock
, flags
);
301 while (!list_empty(&wdev
->event_list
)) {
302 ev
= list_first_entry(&wdev
->event_list
,
303 struct cfg80211_event
, list
);
305 spin_unlock_irqrestore(&wdev
->event_lock
, flags
);
309 case EVENT_CONNECT_RESULT
:
310 __cfg80211_connect_result(
311 wdev
->netdev
, ev
->cr
.bssid
,
312 ev
->cr
.req_ie
, ev
->cr
.req_ie_len
,
313 ev
->cr
.resp_ie
, ev
->cr
.resp_ie_len
,
315 ev
->cr
.status
== WLAN_STATUS_SUCCESS
,
319 __cfg80211_roamed(wdev
, ev
->rm
.bssid
,
320 ev
->rm
.req_ie
, ev
->rm
.req_ie_len
,
321 ev
->rm
.resp_ie
, ev
->rm
.resp_ie_len
);
323 case EVENT_DISCONNECTED
:
324 __cfg80211_disconnected(wdev
->netdev
,
325 ev
->dc
.ie
, ev
->dc
.ie_len
,
326 ev
->dc
.reason
, true);
328 case EVENT_IBSS_JOINED
:
329 __cfg80211_ibss_joined(wdev
->netdev
, ev
->ij
.bssid
);
336 spin_lock_irqsave(&wdev
->event_lock
, flags
);
338 spin_unlock_irqrestore(&wdev
->event_lock
, flags
);
341 static void cfg80211_event_work(struct work_struct
*work
)
343 struct cfg80211_registered_device
*rdev
;
344 struct wireless_dev
*wdev
;
346 rdev
= container_of(work
, struct cfg80211_registered_device
,
350 cfg80211_lock_rdev(rdev
);
351 mutex_lock(&rdev
->devlist_mtx
);
353 list_for_each_entry(wdev
, &rdev
->netdev_list
, list
)
354 cfg80211_process_events(wdev
);
356 mutex_unlock(&rdev
->devlist_mtx
);
357 cfg80211_unlock_rdev(rdev
);
361 /* exported functions */
363 struct wiphy
*wiphy_new(const struct cfg80211_ops
*ops
, int sizeof_priv
)
365 static int wiphy_counter
;
367 struct cfg80211_registered_device
*rdev
;
370 WARN_ON(ops
->add_key
&& (!ops
->del_key
|| !ops
->set_default_key
));
371 WARN_ON(ops
->auth
&& (!ops
->assoc
|| !ops
->deauth
|| !ops
->disassoc
));
372 WARN_ON(ops
->connect
&& !ops
->disconnect
);
373 WARN_ON(ops
->join_ibss
&& !ops
->leave_ibss
);
374 WARN_ON(ops
->add_virtual_intf
&& !ops
->del_virtual_intf
);
375 WARN_ON(ops
->add_station
&& !ops
->del_station
);
376 WARN_ON(ops
->add_mpath
&& !ops
->del_mpath
);
378 alloc_size
= sizeof(*rdev
) + sizeof_priv
;
380 rdev
= kzalloc(alloc_size
, GFP_KERNEL
);
386 mutex_lock(&cfg80211_mutex
);
388 rdev
->wiphy_idx
= wiphy_counter
++;
390 if (unlikely(!wiphy_idx_valid(rdev
->wiphy_idx
))) {
392 mutex_unlock(&cfg80211_mutex
);
398 mutex_unlock(&cfg80211_mutex
);
400 /* give it a proper name */
401 dev_set_name(&rdev
->wiphy
.dev
, PHY_NAME
"%d", rdev
->wiphy_idx
);
403 mutex_init(&rdev
->mtx
);
404 mutex_init(&rdev
->devlist_mtx
);
405 INIT_LIST_HEAD(&rdev
->netdev_list
);
406 spin_lock_init(&rdev
->bss_lock
);
407 INIT_LIST_HEAD(&rdev
->bss_list
);
408 INIT_WORK(&rdev
->scan_done_wk
, __cfg80211_scan_done
);
410 device_initialize(&rdev
->wiphy
.dev
);
411 rdev
->wiphy
.dev
.class = &ieee80211_class
;
412 rdev
->wiphy
.dev
.platform_data
= rdev
;
414 wiphy_net_set(&rdev
->wiphy
, &init_net
);
416 rdev
->rfkill_ops
.set_block
= cfg80211_rfkill_set_block
;
417 rdev
->rfkill
= rfkill_alloc(dev_name(&rdev
->wiphy
.dev
),
418 &rdev
->wiphy
.dev
, RFKILL_TYPE_WLAN
,
419 &rdev
->rfkill_ops
, rdev
);
426 INIT_WORK(&rdev
->rfkill_sync
, cfg80211_rfkill_sync_work
);
427 INIT_WORK(&rdev
->conn_work
, cfg80211_conn_work
);
428 INIT_WORK(&rdev
->event_work
, cfg80211_event_work
);
431 * Initialize wiphy parameters to IEEE 802.11 MIB default values.
432 * Fragmentation and RTS threshold are disabled by default with the
435 rdev
->wiphy
.retry_short
= 7;
436 rdev
->wiphy
.retry_long
= 4;
437 rdev
->wiphy
.frag_threshold
= (u32
) -1;
438 rdev
->wiphy
.rts_threshold
= (u32
) -1;
442 EXPORT_SYMBOL(wiphy_new
);
444 int wiphy_register(struct wiphy
*wiphy
)
446 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
448 enum ieee80211_band band
;
449 struct ieee80211_supported_band
*sband
;
450 bool have_band
= false;
452 u16 ifmodes
= wiphy
->interface_modes
;
454 /* sanity check ifmodes */
456 ifmodes
&= ((1 << __NL80211_IFTYPE_AFTER_LAST
) - 1) & ~1;
457 if (WARN_ON(ifmodes
!= wiphy
->interface_modes
))
458 wiphy
->interface_modes
= ifmodes
;
460 /* sanity check supported bands/channels */
461 for (band
= 0; band
< IEEE80211_NUM_BANDS
; band
++) {
462 sband
= wiphy
->bands
[band
];
468 if (WARN_ON(!sband
->n_channels
|| !sband
->n_bitrates
))
472 * Since we use a u32 for rate bitmaps in
473 * ieee80211_get_response_rate, we cannot
474 * have more than 32 legacy rates.
476 if (WARN_ON(sband
->n_bitrates
> 32))
479 for (i
= 0; i
< sband
->n_channels
; i
++) {
480 sband
->channels
[i
].orig_flags
=
481 sband
->channels
[i
].flags
;
482 sband
->channels
[i
].orig_mag
=
483 sband
->channels
[i
].max_antenna_gain
;
484 sband
->channels
[i
].orig_mpwr
=
485 sband
->channels
[i
].max_power
;
486 sband
->channels
[i
].band
= band
;
497 /* check and set up bitrates */
498 ieee80211_set_bitrate_flags(wiphy
);
500 res
= device_add(&rdev
->wiphy
.dev
);
504 res
= rfkill_register(rdev
->rfkill
);
508 mutex_lock(&cfg80211_mutex
);
510 /* set up regulatory info */
511 wiphy_update_regulatory(wiphy
, NL80211_REGDOM_SET_BY_CORE
);
513 list_add(&rdev
->list
, &cfg80211_rdev_list
);
515 mutex_unlock(&cfg80211_mutex
);
518 rdev
->wiphy
.debugfsdir
=
519 debugfs_create_dir(wiphy_name(&rdev
->wiphy
),
520 ieee80211_debugfs_dir
);
521 if (IS_ERR(rdev
->wiphy
.debugfsdir
))
522 rdev
->wiphy
.debugfsdir
= NULL
;
524 if (wiphy
->custom_regulatory
) {
525 struct regulatory_request request
;
527 request
.wiphy_idx
= get_wiphy_idx(wiphy
);
528 request
.initiator
= NL80211_REGDOM_SET_BY_DRIVER
;
529 request
.alpha2
[0] = '9';
530 request
.alpha2
[1] = '9';
532 nl80211_send_reg_change_event(&request
);
535 cfg80211_debugfs_rdev_add(rdev
);
540 device_del(&rdev
->wiphy
.dev
);
543 EXPORT_SYMBOL(wiphy_register
);
545 void wiphy_rfkill_start_polling(struct wiphy
*wiphy
)
547 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
549 if (!rdev
->ops
->rfkill_poll
)
551 rdev
->rfkill_ops
.poll
= cfg80211_rfkill_poll
;
552 rfkill_resume_polling(rdev
->rfkill
);
554 EXPORT_SYMBOL(wiphy_rfkill_start_polling
);
556 void wiphy_rfkill_stop_polling(struct wiphy
*wiphy
)
558 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
560 rfkill_pause_polling(rdev
->rfkill
);
562 EXPORT_SYMBOL(wiphy_rfkill_stop_polling
);
564 void wiphy_unregister(struct wiphy
*wiphy
)
566 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
568 rfkill_unregister(rdev
->rfkill
);
570 /* protect the device list */
571 mutex_lock(&cfg80211_mutex
);
573 BUG_ON(!list_empty(&rdev
->netdev_list
));
576 * Try to grab rdev->mtx. If a command is still in progress,
577 * hopefully the driver will refuse it since it's tearing
578 * down the device already. We wait for this command to complete
579 * before unlinking the item from the list.
580 * Note: as codified by the BUG_ON above we cannot get here if
581 * a virtual interface is still associated. Hence, we can only
582 * get to lock contention here if userspace issues a command
583 * that identified the hardware by wiphy index.
585 mutex_lock(&rdev
->mtx
);
586 /* unlock again before freeing */
587 mutex_unlock(&rdev
->mtx
);
589 cfg80211_debugfs_rdev_del(rdev
);
591 /* If this device got a regulatory hint tell core its
592 * free to listen now to a new shiny device regulatory hint */
593 reg_device_remove(wiphy
);
595 list_del(&rdev
->list
);
596 device_del(&rdev
->wiphy
.dev
);
597 debugfs_remove(rdev
->wiphy
.debugfsdir
);
599 mutex_unlock(&cfg80211_mutex
);
601 cancel_work_sync(&rdev
->conn_work
);
602 cancel_work_sync(&rdev
->scan_done_wk
);
603 kfree(rdev
->scan_req
);
604 flush_work(&rdev
->event_work
);
606 EXPORT_SYMBOL(wiphy_unregister
);
608 void cfg80211_dev_free(struct cfg80211_registered_device
*rdev
)
610 struct cfg80211_internal_bss
*scan
, *tmp
;
611 rfkill_destroy(rdev
->rfkill
);
612 mutex_destroy(&rdev
->mtx
);
613 mutex_destroy(&rdev
->devlist_mtx
);
614 list_for_each_entry_safe(scan
, tmp
, &rdev
->bss_list
, list
)
615 cfg80211_put_bss(&scan
->pub
);
619 void wiphy_free(struct wiphy
*wiphy
)
621 put_device(&wiphy
->dev
);
623 EXPORT_SYMBOL(wiphy_free
);
625 void wiphy_rfkill_set_hw_state(struct wiphy
*wiphy
, bool blocked
)
627 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
629 if (rfkill_set_hw_state(rdev
->rfkill
, blocked
))
630 schedule_work(&rdev
->rfkill_sync
);
632 EXPORT_SYMBOL(wiphy_rfkill_set_hw_state
);
634 static int cfg80211_netdev_notifier_call(struct notifier_block
* nb
,
638 struct net_device
*dev
= ndev
;
639 struct wireless_dev
*wdev
= dev
->ieee80211_ptr
;
640 struct cfg80211_registered_device
*rdev
;
645 rdev
= wiphy_to_dev(wdev
->wiphy
);
647 WARN_ON(wdev
->iftype
== NL80211_IFTYPE_UNSPECIFIED
);
650 case NETDEV_REGISTER
:
651 mutex_init(&wdev
->mtx
);
652 INIT_LIST_HEAD(&wdev
->event_list
);
653 spin_lock_init(&wdev
->event_lock
);
654 mutex_lock(&rdev
->devlist_mtx
);
655 list_add(&wdev
->list
, &rdev
->netdev_list
);
656 /* can only change netns with wiphy */
657 dev
->features
|= NETIF_F_NETNS_LOCAL
;
659 if (sysfs_create_link(&dev
->dev
.kobj
, &rdev
->wiphy
.dev
.kobj
,
661 printk(KERN_ERR
"wireless: failed to add phy80211 "
662 "symlink to netdev!\n");
665 wdev
->sme_state
= CFG80211_SME_IDLE
;
666 mutex_unlock(&rdev
->devlist_mtx
);
667 #ifdef CONFIG_WIRELESS_EXT
668 if (!dev
->wireless_handlers
)
669 dev
->wireless_handlers
= &cfg80211_wext_handler
;
670 wdev
->wext
.default_key
= -1;
671 wdev
->wext
.default_mgmt_key
= -1;
672 wdev
->wext
.connect
.auth_type
= NL80211_AUTHTYPE_AUTOMATIC
;
673 wdev
->wext
.ps
= CONFIG_CFG80211_DEFAULT_PS_VALUE
;
674 wdev
->wext
.ps_timeout
= 100;
675 if (rdev
->ops
->set_power_mgmt
)
676 if (rdev
->ops
->set_power_mgmt(wdev
->wiphy
, dev
,
678 wdev
->wext
.ps_timeout
)) {
679 /* assume this means it's off */
680 wdev
->wext
.ps
= false;
684 case NETDEV_GOING_DOWN
:
685 switch (wdev
->iftype
) {
686 case NL80211_IFTYPE_ADHOC
:
687 cfg80211_leave_ibss(rdev
, dev
, true);
689 case NL80211_IFTYPE_STATION
:
691 #ifdef CONFIG_WIRELESS_EXT
692 kfree(wdev
->wext
.ie
);
693 wdev
->wext
.ie
= NULL
;
694 wdev
->wext
.ie_len
= 0;
695 wdev
->wext
.connect
.auth_type
= NL80211_AUTHTYPE_AUTOMATIC
;
697 __cfg80211_disconnect(rdev
, dev
,
698 WLAN_REASON_DEAUTH_LEAVING
, true);
699 cfg80211_mlme_down(rdev
, dev
);
707 #ifdef CONFIG_WIRELESS_EXT
708 cfg80211_lock_rdev(rdev
);
710 switch (wdev
->iftype
) {
711 case NL80211_IFTYPE_ADHOC
:
712 cfg80211_ibss_wext_join(rdev
, wdev
);
714 case NL80211_IFTYPE_STATION
:
715 cfg80211_mgd_wext_connect(rdev
, wdev
);
721 cfg80211_unlock_rdev(rdev
);
724 case NETDEV_UNREGISTER
:
725 mutex_lock(&rdev
->devlist_mtx
);
727 * It is possible to get NETDEV_UNREGISTER
728 * multiple times. To detect that, check
729 * that the interface is still on the list
730 * of registered interfaces, and only then
731 * remove and clean it up.
733 if (!list_empty(&wdev
->list
)) {
734 sysfs_remove_link(&dev
->dev
.kobj
, "phy80211");
735 list_del_init(&wdev
->list
);
736 mutex_destroy(&wdev
->mtx
);
737 #ifdef CONFIG_WIRELESS_EXT
738 kfree(wdev
->wext
.keys
);
741 mutex_unlock(&rdev
->devlist_mtx
);
744 if (!(wdev
->wiphy
->interface_modes
& BIT(wdev
->iftype
)))
745 return notifier_from_errno(-EOPNOTSUPP
);
746 if (rfkill_blocked(rdev
->rfkill
))
747 return notifier_from_errno(-ERFKILL
);
754 static struct notifier_block cfg80211_netdev_notifier
= {
755 .notifier_call
= cfg80211_netdev_notifier_call
,
758 static void __net_exit
cfg80211_pernet_exit(struct net
*net
)
760 struct cfg80211_registered_device
*rdev
;
763 mutex_lock(&cfg80211_mutex
);
764 list_for_each_entry(rdev
, &cfg80211_rdev_list
, list
) {
765 if (net_eq(wiphy_net(&rdev
->wiphy
), net
))
766 WARN_ON(cfg80211_switch_netns(rdev
, &init_net
));
768 mutex_unlock(&cfg80211_mutex
);
772 static struct pernet_operations cfg80211_pernet_ops
= {
773 .exit
= cfg80211_pernet_exit
,
776 static int __init
cfg80211_init(void)
780 err
= register_pernet_device(&cfg80211_pernet_ops
);
782 goto out_fail_pernet
;
784 err
= wiphy_sysfs_init();
788 err
= register_netdevice_notifier(&cfg80211_netdev_notifier
);
790 goto out_fail_notifier
;
792 err
= nl80211_init();
794 goto out_fail_nl80211
;
796 ieee80211_debugfs_dir
= debugfs_create_dir("ieee80211", NULL
);
798 err
= regulatory_init();
805 debugfs_remove(ieee80211_debugfs_dir
);
807 unregister_netdevice_notifier(&cfg80211_netdev_notifier
);
811 unregister_pernet_device(&cfg80211_pernet_ops
);
815 subsys_initcall(cfg80211_init
);
817 static void cfg80211_exit(void)
819 debugfs_remove(ieee80211_debugfs_dir
);
821 unregister_netdevice_notifier(&cfg80211_netdev_notifier
);
824 unregister_pernet_device(&cfg80211_pernet_ops
);
826 module_exit(cfg80211_exit
);