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
);
35 int cfg80211_rdev_list_generation
;
38 * This is used to protect the cfg80211_rdev_list
40 DEFINE_MUTEX(cfg80211_mutex
);
43 static struct dentry
*ieee80211_debugfs_dir
;
45 /* requires cfg80211_mutex to be held! */
46 struct cfg80211_registered_device
*cfg80211_rdev_by_wiphy_idx(int wiphy_idx
)
48 struct cfg80211_registered_device
*result
= NULL
, *rdev
;
50 if (!wiphy_idx_valid(wiphy_idx
))
53 assert_cfg80211_lock();
55 list_for_each_entry(rdev
, &cfg80211_rdev_list
, list
) {
56 if (rdev
->wiphy_idx
== wiphy_idx
) {
65 int get_wiphy_idx(struct wiphy
*wiphy
)
67 struct cfg80211_registered_device
*rdev
;
69 return WIPHY_IDX_STALE
;
70 rdev
= wiphy_to_dev(wiphy
);
71 return rdev
->wiphy_idx
;
74 /* requires cfg80211_rdev_mutex to be held! */
75 struct wiphy
*wiphy_idx_to_wiphy(int wiphy_idx
)
77 struct cfg80211_registered_device
*rdev
;
79 if (!wiphy_idx_valid(wiphy_idx
))
82 assert_cfg80211_lock();
84 rdev
= cfg80211_rdev_by_wiphy_idx(wiphy_idx
);
90 /* requires cfg80211_mutex to be held! */
91 struct cfg80211_registered_device
*
92 __cfg80211_rdev_from_info(struct genl_info
*info
)
95 struct cfg80211_registered_device
*bywiphyidx
= NULL
, *byifidx
= NULL
;
96 struct net_device
*dev
;
99 assert_cfg80211_lock();
101 if (info
->attrs
[NL80211_ATTR_WIPHY
]) {
102 bywiphyidx
= cfg80211_rdev_by_wiphy_idx(
103 nla_get_u32(info
->attrs
[NL80211_ATTR_WIPHY
]));
107 if (info
->attrs
[NL80211_ATTR_IFINDEX
]) {
108 ifindex
= nla_get_u32(info
->attrs
[NL80211_ATTR_IFINDEX
]);
109 dev
= dev_get_by_index(genl_info_net(info
), ifindex
);
111 if (dev
->ieee80211_ptr
)
113 wiphy_to_dev(dev
->ieee80211_ptr
->wiphy
);
119 if (bywiphyidx
&& byifidx
) {
120 if (bywiphyidx
!= byifidx
)
121 return ERR_PTR(-EINVAL
);
123 return bywiphyidx
; /* == byifidx */
134 struct cfg80211_registered_device
*
135 cfg80211_get_dev_from_info(struct genl_info
*info
)
137 struct cfg80211_registered_device
*rdev
;
139 mutex_lock(&cfg80211_mutex
);
140 rdev
= __cfg80211_rdev_from_info(info
);
142 /* if it is not an error we grab the lock on
143 * it to assure it won't be going away while
144 * we operate on it */
146 mutex_lock(&rdev
->mtx
);
148 mutex_unlock(&cfg80211_mutex
);
153 struct cfg80211_registered_device
*
154 cfg80211_get_dev_from_ifindex(struct net
*net
, int ifindex
)
156 struct cfg80211_registered_device
*rdev
= ERR_PTR(-ENODEV
);
157 struct net_device
*dev
;
159 mutex_lock(&cfg80211_mutex
);
160 dev
= dev_get_by_index(net
, ifindex
);
163 if (dev
->ieee80211_ptr
) {
164 rdev
= wiphy_to_dev(dev
->ieee80211_ptr
->wiphy
);
165 mutex_lock(&rdev
->mtx
);
167 rdev
= ERR_PTR(-ENODEV
);
170 mutex_unlock(&cfg80211_mutex
);
174 /* requires cfg80211_mutex to be held */
175 int cfg80211_dev_rename(struct cfg80211_registered_device
*rdev
,
178 struct cfg80211_registered_device
*rdev2
;
179 int wiphy_idx
, taken
= -1, result
, digits
;
181 assert_cfg80211_lock();
183 /* prohibit calling the thing phy%d when %d is not its number */
184 sscanf(newname
, PHY_NAME
"%d%n", &wiphy_idx
, &taken
);
185 if (taken
== strlen(newname
) && wiphy_idx
!= rdev
->wiphy_idx
) {
186 /* count number of places needed to print wiphy_idx */
188 while (wiphy_idx
/= 10)
191 * deny the name if it is phy<idx> where <idx> is printed
192 * without leading zeroes. taken == strlen(newname) here
194 if (taken
== strlen(PHY_NAME
) + digits
)
199 /* Ignore nop renames */
200 if (strcmp(newname
, dev_name(&rdev
->wiphy
.dev
)) == 0)
203 /* Ensure another device does not already have this name. */
204 list_for_each_entry(rdev2
, &cfg80211_rdev_list
, list
)
205 if (strcmp(newname
, dev_name(&rdev2
->wiphy
.dev
)) == 0)
208 result
= device_rename(&rdev
->wiphy
.dev
, newname
);
212 if (rdev
->wiphy
.debugfsdir
&&
213 !debugfs_rename(rdev
->wiphy
.debugfsdir
->d_parent
,
214 rdev
->wiphy
.debugfsdir
,
215 rdev
->wiphy
.debugfsdir
->d_parent
,
217 printk(KERN_ERR
"cfg80211: failed to rename debugfs dir to %s!\n",
220 nl80211_notify_dev_rename(rdev
);
225 int cfg80211_switch_netns(struct cfg80211_registered_device
*rdev
,
228 struct wireless_dev
*wdev
;
231 if (!rdev
->wiphy
.netnsok
)
234 list_for_each_entry(wdev
, &rdev
->netdev_list
, list
) {
235 wdev
->netdev
->features
&= ~NETIF_F_NETNS_LOCAL
;
236 err
= dev_change_net_namespace(wdev
->netdev
, net
, "wlan%d");
239 wdev
->netdev
->features
|= NETIF_F_NETNS_LOCAL
;
243 /* failed -- clean up to old netns */
244 net
= wiphy_net(&rdev
->wiphy
);
246 list_for_each_entry_continue_reverse(wdev
, &rdev
->netdev_list
,
248 wdev
->netdev
->features
&= ~NETIF_F_NETNS_LOCAL
;
249 err
= dev_change_net_namespace(wdev
->netdev
, net
,
252 wdev
->netdev
->features
|= NETIF_F_NETNS_LOCAL
;
256 wiphy_net_set(&rdev
->wiphy
, net
);
261 static void cfg80211_rfkill_poll(struct rfkill
*rfkill
, void *data
)
263 struct cfg80211_registered_device
*rdev
= data
;
265 rdev
->ops
->rfkill_poll(&rdev
->wiphy
);
268 static int cfg80211_rfkill_set_block(void *data
, bool blocked
)
270 struct cfg80211_registered_device
*rdev
= data
;
271 struct wireless_dev
*wdev
;
277 mutex_lock(&rdev
->devlist_mtx
);
279 list_for_each_entry(wdev
, &rdev
->netdev_list
, list
)
280 dev_close(wdev
->netdev
);
282 mutex_unlock(&rdev
->devlist_mtx
);
288 static void cfg80211_rfkill_sync_work(struct work_struct
*work
)
290 struct cfg80211_registered_device
*rdev
;
292 rdev
= container_of(work
, struct cfg80211_registered_device
, rfkill_sync
);
293 cfg80211_rfkill_set_block(rdev
, rfkill_blocked(rdev
->rfkill
));
296 static void cfg80211_process_events(struct wireless_dev
*wdev
)
298 struct cfg80211_event
*ev
;
301 spin_lock_irqsave(&wdev
->event_lock
, flags
);
302 while (!list_empty(&wdev
->event_list
)) {
303 ev
= list_first_entry(&wdev
->event_list
,
304 struct cfg80211_event
, list
);
306 spin_unlock_irqrestore(&wdev
->event_lock
, flags
);
310 case EVENT_CONNECT_RESULT
:
311 __cfg80211_connect_result(
312 wdev
->netdev
, ev
->cr
.bssid
,
313 ev
->cr
.req_ie
, ev
->cr
.req_ie_len
,
314 ev
->cr
.resp_ie
, ev
->cr
.resp_ie_len
,
316 ev
->cr
.status
== WLAN_STATUS_SUCCESS
,
320 __cfg80211_roamed(wdev
, ev
->rm
.bssid
,
321 ev
->rm
.req_ie
, ev
->rm
.req_ie_len
,
322 ev
->rm
.resp_ie
, ev
->rm
.resp_ie_len
);
324 case EVENT_DISCONNECTED
:
325 __cfg80211_disconnected(wdev
->netdev
,
326 ev
->dc
.ie
, ev
->dc
.ie_len
,
327 ev
->dc
.reason
, true);
329 case EVENT_IBSS_JOINED
:
330 __cfg80211_ibss_joined(wdev
->netdev
, ev
->ij
.bssid
);
337 spin_lock_irqsave(&wdev
->event_lock
, flags
);
339 spin_unlock_irqrestore(&wdev
->event_lock
, flags
);
342 static void cfg80211_event_work(struct work_struct
*work
)
344 struct cfg80211_registered_device
*rdev
;
345 struct wireless_dev
*wdev
;
347 rdev
= container_of(work
, struct cfg80211_registered_device
,
351 cfg80211_lock_rdev(rdev
);
352 mutex_lock(&rdev
->devlist_mtx
);
354 list_for_each_entry(wdev
, &rdev
->netdev_list
, list
)
355 cfg80211_process_events(wdev
);
357 mutex_unlock(&rdev
->devlist_mtx
);
358 cfg80211_unlock_rdev(rdev
);
362 /* exported functions */
364 struct wiphy
*wiphy_new(const struct cfg80211_ops
*ops
, int sizeof_priv
)
366 static int wiphy_counter
;
368 struct cfg80211_registered_device
*rdev
;
371 WARN_ON(ops
->add_key
&& (!ops
->del_key
|| !ops
->set_default_key
));
372 WARN_ON(ops
->auth
&& (!ops
->assoc
|| !ops
->deauth
|| !ops
->disassoc
));
373 WARN_ON(ops
->connect
&& !ops
->disconnect
);
374 WARN_ON(ops
->join_ibss
&& !ops
->leave_ibss
);
375 WARN_ON(ops
->add_virtual_intf
&& !ops
->del_virtual_intf
);
376 WARN_ON(ops
->add_station
&& !ops
->del_station
);
377 WARN_ON(ops
->add_mpath
&& !ops
->del_mpath
);
379 alloc_size
= sizeof(*rdev
) + sizeof_priv
;
381 rdev
= kzalloc(alloc_size
, GFP_KERNEL
);
387 mutex_lock(&cfg80211_mutex
);
389 rdev
->wiphy_idx
= wiphy_counter
++;
391 if (unlikely(!wiphy_idx_valid(rdev
->wiphy_idx
))) {
393 mutex_unlock(&cfg80211_mutex
);
399 mutex_unlock(&cfg80211_mutex
);
401 /* give it a proper name */
402 dev_set_name(&rdev
->wiphy
.dev
, PHY_NAME
"%d", rdev
->wiphy_idx
);
404 mutex_init(&rdev
->mtx
);
405 mutex_init(&rdev
->devlist_mtx
);
406 INIT_LIST_HEAD(&rdev
->netdev_list
);
407 spin_lock_init(&rdev
->bss_lock
);
408 INIT_LIST_HEAD(&rdev
->bss_list
);
409 INIT_WORK(&rdev
->scan_done_wk
, __cfg80211_scan_done
);
411 device_initialize(&rdev
->wiphy
.dev
);
412 rdev
->wiphy
.dev
.class = &ieee80211_class
;
413 rdev
->wiphy
.dev
.platform_data
= rdev
;
415 wiphy_net_set(&rdev
->wiphy
, &init_net
);
417 rdev
->rfkill_ops
.set_block
= cfg80211_rfkill_set_block
;
418 rdev
->rfkill
= rfkill_alloc(dev_name(&rdev
->wiphy
.dev
),
419 &rdev
->wiphy
.dev
, RFKILL_TYPE_WLAN
,
420 &rdev
->rfkill_ops
, rdev
);
427 INIT_WORK(&rdev
->rfkill_sync
, cfg80211_rfkill_sync_work
);
428 INIT_WORK(&rdev
->conn_work
, cfg80211_conn_work
);
429 INIT_WORK(&rdev
->event_work
, cfg80211_event_work
);
432 * Initialize wiphy parameters to IEEE 802.11 MIB default values.
433 * Fragmentation and RTS threshold are disabled by default with the
436 rdev
->wiphy
.retry_short
= 7;
437 rdev
->wiphy
.retry_long
= 4;
438 rdev
->wiphy
.frag_threshold
= (u32
) -1;
439 rdev
->wiphy
.rts_threshold
= (u32
) -1;
443 EXPORT_SYMBOL(wiphy_new
);
445 int wiphy_register(struct wiphy
*wiphy
)
447 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
449 enum ieee80211_band band
;
450 struct ieee80211_supported_band
*sband
;
451 bool have_band
= false;
453 u16 ifmodes
= wiphy
->interface_modes
;
455 /* sanity check ifmodes */
457 ifmodes
&= ((1 << __NL80211_IFTYPE_AFTER_LAST
) - 1) & ~1;
458 if (WARN_ON(ifmodes
!= wiphy
->interface_modes
))
459 wiphy
->interface_modes
= ifmodes
;
461 /* sanity check supported bands/channels */
462 for (band
= 0; band
< IEEE80211_NUM_BANDS
; band
++) {
463 sband
= wiphy
->bands
[band
];
469 if (WARN_ON(!sband
->n_channels
|| !sband
->n_bitrates
))
473 * Since we use a u32 for rate bitmaps in
474 * ieee80211_get_response_rate, we cannot
475 * have more than 32 legacy rates.
477 if (WARN_ON(sband
->n_bitrates
> 32))
480 for (i
= 0; i
< sband
->n_channels
; i
++) {
481 sband
->channels
[i
].orig_flags
=
482 sband
->channels
[i
].flags
;
483 sband
->channels
[i
].orig_mag
=
484 sband
->channels
[i
].max_antenna_gain
;
485 sband
->channels
[i
].orig_mpwr
=
486 sband
->channels
[i
].max_power
;
487 sband
->channels
[i
].band
= band
;
498 /* check and set up bitrates */
499 ieee80211_set_bitrate_flags(wiphy
);
501 res
= device_add(&rdev
->wiphy
.dev
);
505 res
= rfkill_register(rdev
->rfkill
);
509 mutex_lock(&cfg80211_mutex
);
511 /* set up regulatory info */
512 wiphy_update_regulatory(wiphy
, NL80211_REGDOM_SET_BY_CORE
);
514 list_add(&rdev
->list
, &cfg80211_rdev_list
);
515 cfg80211_rdev_list_generation
++;
517 mutex_unlock(&cfg80211_mutex
);
520 rdev
->wiphy
.debugfsdir
=
521 debugfs_create_dir(wiphy_name(&rdev
->wiphy
),
522 ieee80211_debugfs_dir
);
523 if (IS_ERR(rdev
->wiphy
.debugfsdir
))
524 rdev
->wiphy
.debugfsdir
= NULL
;
526 if (wiphy
->custom_regulatory
) {
527 struct regulatory_request request
;
529 request
.wiphy_idx
= get_wiphy_idx(wiphy
);
530 request
.initiator
= NL80211_REGDOM_SET_BY_DRIVER
;
531 request
.alpha2
[0] = '9';
532 request
.alpha2
[1] = '9';
534 nl80211_send_reg_change_event(&request
);
537 cfg80211_debugfs_rdev_add(rdev
);
542 device_del(&rdev
->wiphy
.dev
);
545 EXPORT_SYMBOL(wiphy_register
);
547 void wiphy_rfkill_start_polling(struct wiphy
*wiphy
)
549 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
551 if (!rdev
->ops
->rfkill_poll
)
553 rdev
->rfkill_ops
.poll
= cfg80211_rfkill_poll
;
554 rfkill_resume_polling(rdev
->rfkill
);
556 EXPORT_SYMBOL(wiphy_rfkill_start_polling
);
558 void wiphy_rfkill_stop_polling(struct wiphy
*wiphy
)
560 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
562 rfkill_pause_polling(rdev
->rfkill
);
564 EXPORT_SYMBOL(wiphy_rfkill_stop_polling
);
566 void wiphy_unregister(struct wiphy
*wiphy
)
568 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
570 rfkill_unregister(rdev
->rfkill
);
572 /* protect the device list */
573 mutex_lock(&cfg80211_mutex
);
575 BUG_ON(!list_empty(&rdev
->netdev_list
));
578 * Try to grab rdev->mtx. If a command is still in progress,
579 * hopefully the driver will refuse it since it's tearing
580 * down the device already. We wait for this command to complete
581 * before unlinking the item from the list.
582 * Note: as codified by the BUG_ON above we cannot get here if
583 * a virtual interface is still associated. Hence, we can only
584 * get to lock contention here if userspace issues a command
585 * that identified the hardware by wiphy index.
587 mutex_lock(&rdev
->mtx
);
588 /* unlock again before freeing */
589 mutex_unlock(&rdev
->mtx
);
591 cfg80211_debugfs_rdev_del(rdev
);
593 /* If this device got a regulatory hint tell core its
594 * free to listen now to a new shiny device regulatory hint */
595 reg_device_remove(wiphy
);
597 list_del(&rdev
->list
);
598 cfg80211_rdev_list_generation
++;
599 device_del(&rdev
->wiphy
.dev
);
600 debugfs_remove(rdev
->wiphy
.debugfsdir
);
602 mutex_unlock(&cfg80211_mutex
);
604 cancel_work_sync(&rdev
->conn_work
);
605 cancel_work_sync(&rdev
->scan_done_wk
);
606 kfree(rdev
->scan_req
);
607 flush_work(&rdev
->event_work
);
609 EXPORT_SYMBOL(wiphy_unregister
);
611 void cfg80211_dev_free(struct cfg80211_registered_device
*rdev
)
613 struct cfg80211_internal_bss
*scan
, *tmp
;
614 rfkill_destroy(rdev
->rfkill
);
615 mutex_destroy(&rdev
->mtx
);
616 mutex_destroy(&rdev
->devlist_mtx
);
617 list_for_each_entry_safe(scan
, tmp
, &rdev
->bss_list
, list
)
618 cfg80211_put_bss(&scan
->pub
);
622 void wiphy_free(struct wiphy
*wiphy
)
624 put_device(&wiphy
->dev
);
626 EXPORT_SYMBOL(wiphy_free
);
628 void wiphy_rfkill_set_hw_state(struct wiphy
*wiphy
, bool blocked
)
630 struct cfg80211_registered_device
*rdev
= wiphy_to_dev(wiphy
);
632 if (rfkill_set_hw_state(rdev
->rfkill
, blocked
))
633 schedule_work(&rdev
->rfkill_sync
);
635 EXPORT_SYMBOL(wiphy_rfkill_set_hw_state
);
637 static int cfg80211_netdev_notifier_call(struct notifier_block
* nb
,
641 struct net_device
*dev
= ndev
;
642 struct wireless_dev
*wdev
= dev
->ieee80211_ptr
;
643 struct cfg80211_registered_device
*rdev
;
648 rdev
= wiphy_to_dev(wdev
->wiphy
);
650 WARN_ON(wdev
->iftype
== NL80211_IFTYPE_UNSPECIFIED
);
653 case NETDEV_REGISTER
:
654 mutex_init(&wdev
->mtx
);
655 INIT_LIST_HEAD(&wdev
->event_list
);
656 spin_lock_init(&wdev
->event_lock
);
657 mutex_lock(&rdev
->devlist_mtx
);
658 list_add(&wdev
->list
, &rdev
->netdev_list
);
659 rdev
->devlist_generation
++;
660 /* can only change netns with wiphy */
661 dev
->features
|= NETIF_F_NETNS_LOCAL
;
663 if (sysfs_create_link(&dev
->dev
.kobj
, &rdev
->wiphy
.dev
.kobj
,
665 printk(KERN_ERR
"wireless: failed to add phy80211 "
666 "symlink to netdev!\n");
669 wdev
->sme_state
= CFG80211_SME_IDLE
;
670 mutex_unlock(&rdev
->devlist_mtx
);
671 #ifdef CONFIG_WIRELESS_EXT
672 if (!dev
->wireless_handlers
)
673 dev
->wireless_handlers
= &cfg80211_wext_handler
;
674 wdev
->wext
.default_key
= -1;
675 wdev
->wext
.default_mgmt_key
= -1;
676 wdev
->wext
.connect
.auth_type
= NL80211_AUTHTYPE_AUTOMATIC
;
677 wdev
->wext
.ps
= CONFIG_CFG80211_DEFAULT_PS_VALUE
;
678 wdev
->wext
.ps_timeout
= 100;
679 if (rdev
->ops
->set_power_mgmt
)
680 if (rdev
->ops
->set_power_mgmt(wdev
->wiphy
, dev
,
682 wdev
->wext
.ps_timeout
)) {
683 /* assume this means it's off */
684 wdev
->wext
.ps
= false;
688 case NETDEV_GOING_DOWN
:
689 switch (wdev
->iftype
) {
690 case NL80211_IFTYPE_ADHOC
:
691 cfg80211_leave_ibss(rdev
, dev
, true);
693 case NL80211_IFTYPE_STATION
:
695 #ifdef CONFIG_WIRELESS_EXT
696 kfree(wdev
->wext
.ie
);
697 wdev
->wext
.ie
= NULL
;
698 wdev
->wext
.ie_len
= 0;
699 wdev
->wext
.connect
.auth_type
= NL80211_AUTHTYPE_AUTOMATIC
;
701 __cfg80211_disconnect(rdev
, dev
,
702 WLAN_REASON_DEAUTH_LEAVING
, true);
703 cfg80211_mlme_down(rdev
, dev
);
711 #ifdef CONFIG_WIRELESS_EXT
712 cfg80211_lock_rdev(rdev
);
713 mutex_lock(&rdev
->devlist_mtx
);
715 switch (wdev
->iftype
) {
716 case NL80211_IFTYPE_ADHOC
:
717 cfg80211_ibss_wext_join(rdev
, wdev
);
719 case NL80211_IFTYPE_STATION
:
720 cfg80211_mgd_wext_connect(rdev
, wdev
);
726 mutex_unlock(&rdev
->devlist_mtx
);
727 cfg80211_unlock_rdev(rdev
);
730 case NETDEV_UNREGISTER
:
731 mutex_lock(&rdev
->devlist_mtx
);
733 * It is possible to get NETDEV_UNREGISTER
734 * multiple times. To detect that, check
735 * that the interface is still on the list
736 * of registered interfaces, and only then
737 * remove and clean it up.
739 if (!list_empty(&wdev
->list
)) {
740 sysfs_remove_link(&dev
->dev
.kobj
, "phy80211");
741 list_del_init(&wdev
->list
);
742 rdev
->devlist_generation
++;
743 mutex_destroy(&wdev
->mtx
);
744 #ifdef CONFIG_WIRELESS_EXT
745 kfree(wdev
->wext
.keys
);
748 mutex_unlock(&rdev
->devlist_mtx
);
751 if (!(wdev
->wiphy
->interface_modes
& BIT(wdev
->iftype
)))
752 return notifier_from_errno(-EOPNOTSUPP
);
753 if (rfkill_blocked(rdev
->rfkill
))
754 return notifier_from_errno(-ERFKILL
);
761 static struct notifier_block cfg80211_netdev_notifier
= {
762 .notifier_call
= cfg80211_netdev_notifier_call
,
765 static void __net_exit
cfg80211_pernet_exit(struct net
*net
)
767 struct cfg80211_registered_device
*rdev
;
770 mutex_lock(&cfg80211_mutex
);
771 list_for_each_entry(rdev
, &cfg80211_rdev_list
, list
) {
772 if (net_eq(wiphy_net(&rdev
->wiphy
), net
))
773 WARN_ON(cfg80211_switch_netns(rdev
, &init_net
));
775 mutex_unlock(&cfg80211_mutex
);
779 static struct pernet_operations cfg80211_pernet_ops
= {
780 .exit
= cfg80211_pernet_exit
,
783 static int __init
cfg80211_init(void)
787 err
= register_pernet_device(&cfg80211_pernet_ops
);
789 goto out_fail_pernet
;
791 err
= wiphy_sysfs_init();
795 err
= register_netdevice_notifier(&cfg80211_netdev_notifier
);
797 goto out_fail_notifier
;
799 err
= nl80211_init();
801 goto out_fail_nl80211
;
803 ieee80211_debugfs_dir
= debugfs_create_dir("ieee80211", NULL
);
805 err
= regulatory_init();
812 debugfs_remove(ieee80211_debugfs_dir
);
814 unregister_netdevice_notifier(&cfg80211_netdev_notifier
);
818 unregister_pernet_device(&cfg80211_pernet_ops
);
822 subsys_initcall(cfg80211_init
);
824 static void cfg80211_exit(void)
826 debugfs_remove(ieee80211_debugfs_dir
);
828 unregister_netdevice_notifier(&cfg80211_netdev_notifier
);
831 unregister_pernet_device(&cfg80211_pernet_ops
);
833 module_exit(cfg80211_exit
);