2 * Interface handling (except master interface)
4 * Copyright 2002-2005, Instant802 Networks, Inc.
5 * Copyright 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 #include <linux/slab.h>
14 #include <linux/kernel.h>
15 #include <linux/if_arp.h>
16 #include <linux/netdevice.h>
17 #include <linux/rtnetlink.h>
18 #include <net/mac80211.h>
19 #include <net/ieee80211_radiotap.h>
20 #include "ieee80211_i.h"
22 #include "debugfs_netdev.h"
25 #include "driver-ops.h"
30 * DOC: Interface list locking
32 * The interface list in each struct ieee80211_local is protected
35 * (1) modifications may only be done under the RTNL
36 * (2) modifications and readers are protected against each other by
38 * (3) modifications are done in an RCU manner so atomic readers
39 * can traverse the list in RCU-safe blocks.
41 * As a consequence, reads (traversals) of the list can be protected
42 * by either the RTNL, the iflist_mtx or RCU.
46 static int ieee80211_change_mtu(struct net_device
*dev
, int new_mtu
)
49 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
51 meshhdrlen
= (sdata
->vif
.type
== NL80211_IFTYPE_MESH_POINT
) ? 5 : 0;
53 /* FIX: what would be proper limits for MTU?
54 * This interface uses 802.3 frames. */
56 new_mtu
> IEEE80211_MAX_DATA_LEN
- 24 - 6 - meshhdrlen
) {
60 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
61 printk(KERN_DEBUG
"%s: setting MTU %d\n", dev
->name
, new_mtu
);
62 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
67 static int ieee80211_change_mac(struct net_device
*dev
, void *addr
)
69 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
70 struct sockaddr
*sa
= addr
;
73 if (ieee80211_sdata_running(sdata
))
76 ret
= eth_mac_addr(dev
, sa
);
79 memcpy(sdata
->vif
.addr
, sa
->sa_data
, ETH_ALEN
);
84 static inline int identical_mac_addr_allowed(int type1
, int type2
)
86 return type1
== NL80211_IFTYPE_MONITOR
||
87 type2
== NL80211_IFTYPE_MONITOR
||
88 (type1
== NL80211_IFTYPE_AP
&& type2
== NL80211_IFTYPE_WDS
) ||
89 (type1
== NL80211_IFTYPE_WDS
&&
90 (type2
== NL80211_IFTYPE_WDS
||
91 type2
== NL80211_IFTYPE_AP
)) ||
92 (type1
== NL80211_IFTYPE_AP
&& type2
== NL80211_IFTYPE_AP_VLAN
) ||
93 (type1
== NL80211_IFTYPE_AP_VLAN
&&
94 (type2
== NL80211_IFTYPE_AP
||
95 type2
== NL80211_IFTYPE_AP_VLAN
));
98 static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data
*sdata
,
99 enum nl80211_iftype iftype
)
101 struct ieee80211_local
*local
= sdata
->local
;
102 struct ieee80211_sub_if_data
*nsdata
;
103 struct net_device
*dev
= sdata
->dev
;
107 /* we hold the RTNL here so can safely walk the list */
108 list_for_each_entry(nsdata
, &local
->interfaces
, list
) {
109 struct net_device
*ndev
= nsdata
->dev
;
111 if (ndev
!= dev
&& ieee80211_sdata_running(nsdata
)) {
113 * Allow only a single IBSS interface to be up at any
114 * time. This is restricted because beacon distribution
115 * cannot work properly if both are in the same IBSS.
117 * To remove this restriction we'd have to disallow them
118 * from setting the same SSID on different IBSS interfaces
119 * belonging to the same hardware. Then, however, we're
120 * faced with having to adopt two different TSF timers...
122 if (iftype
== NL80211_IFTYPE_ADHOC
&&
123 nsdata
->vif
.type
== NL80211_IFTYPE_ADHOC
)
127 * The remaining checks are only performed for interfaces
128 * with the same MAC address.
130 if (compare_ether_addr(dev
->dev_addr
, ndev
->dev_addr
))
134 * check whether it may have the same address
136 if (!identical_mac_addr_allowed(iftype
,
141 * can only add VLANs to enabled APs
143 if (iftype
== NL80211_IFTYPE_AP_VLAN
&&
144 nsdata
->vif
.type
== NL80211_IFTYPE_AP
)
145 sdata
->bss
= &nsdata
->u
.ap
;
152 static int ieee80211_check_queues(struct ieee80211_sub_if_data
*sdata
)
154 int n_queues
= sdata
->local
->hw
.queues
;
157 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
158 if (WARN_ON_ONCE(sdata
->vif
.hw_queue
[i
] ==
159 IEEE80211_INVAL_HW_QUEUE
))
161 if (WARN_ON_ONCE(sdata
->vif
.hw_queue
[i
] >=
166 if (sdata
->vif
.type
!= NL80211_IFTYPE_AP
) {
167 sdata
->vif
.cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
171 if (WARN_ON_ONCE(sdata
->vif
.cab_queue
== IEEE80211_INVAL_HW_QUEUE
))
174 if (WARN_ON_ONCE(sdata
->vif
.cab_queue
>= n_queues
))
180 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data
*sdata
,
183 struct ieee80211_local
*local
= sdata
->local
;
184 u32 flags
= sdata
->u
.mntr_flags
;
186 #define ADJUST(_f, _s) do { \
187 if (flags & MONITOR_FLAG_##_f) \
188 local->fif_##_s += offset; \
191 ADJUST(FCSFAIL
, fcsfail
);
192 ADJUST(PLCPFAIL
, plcpfail
);
193 ADJUST(CONTROL
, control
);
194 ADJUST(CONTROL
, pspoll
);
195 ADJUST(OTHER_BSS
, other_bss
);
200 static void ieee80211_set_default_queues(struct ieee80211_sub_if_data
*sdata
)
202 struct ieee80211_local
*local
= sdata
->local
;
205 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
206 if (local
->hw
.flags
& IEEE80211_HW_QUEUE_CONTROL
)
207 sdata
->vif
.hw_queue
[i
] = IEEE80211_INVAL_HW_QUEUE
;
209 sdata
->vif
.hw_queue
[i
] = i
;
211 sdata
->vif
.cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
214 static int ieee80211_add_virtual_monitor(struct ieee80211_local
*local
)
216 struct ieee80211_sub_if_data
*sdata
;
219 if (!(local
->hw
.flags
& IEEE80211_HW_WANT_MONITOR_VIF
))
222 if (local
->monitor_sdata
)
225 sdata
= kzalloc(sizeof(*sdata
) + local
->hw
.vif_data_size
, GFP_KERNEL
);
230 sdata
->local
= local
;
231 sdata
->vif
.type
= NL80211_IFTYPE_MONITOR
;
232 snprintf(sdata
->name
, IFNAMSIZ
, "%s-monitor",
233 wiphy_name(local
->hw
.wiphy
));
235 ieee80211_set_default_queues(sdata
);
237 ret
= drv_add_interface(local
, sdata
);
239 /* ok .. stupid driver, it asked for this! */
244 ret
= ieee80211_check_queues(sdata
);
250 rcu_assign_pointer(local
->monitor_sdata
, sdata
);
255 static void ieee80211_del_virtual_monitor(struct ieee80211_local
*local
)
257 struct ieee80211_sub_if_data
*sdata
;
259 if (!(local
->hw
.flags
& IEEE80211_HW_WANT_MONITOR_VIF
))
262 sdata
= rtnl_dereference(local
->monitor_sdata
);
267 rcu_assign_pointer(local
->monitor_sdata
, NULL
);
270 drv_remove_interface(local
, sdata
);
276 * NOTE: Be very careful when changing this function, it must NOT return
277 * an error on interface type changes that have been pre-checked, so most
278 * checks should be in ieee80211_check_concurrent_iface.
280 static int ieee80211_do_open(struct net_device
*dev
, bool coming_up
)
282 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
283 struct ieee80211_local
*local
= sdata
->local
;
284 struct sta_info
*sta
;
287 u32 hw_reconf_flags
= 0;
289 switch (sdata
->vif
.type
) {
290 case NL80211_IFTYPE_WDS
:
291 if (!is_valid_ether_addr(sdata
->u
.wds
.remote_addr
))
294 case NL80211_IFTYPE_AP_VLAN
: {
295 struct ieee80211_sub_if_data
*master
;
300 list_add(&sdata
->u
.vlan
.list
, &sdata
->bss
->vlans
);
302 master
= container_of(sdata
->bss
,
303 struct ieee80211_sub_if_data
, u
.ap
);
304 sdata
->control_port_protocol
=
305 master
->control_port_protocol
;
306 sdata
->control_port_no_encrypt
=
307 master
->control_port_no_encrypt
;
310 case NL80211_IFTYPE_AP
:
311 sdata
->bss
= &sdata
->u
.ap
;
313 case NL80211_IFTYPE_MESH_POINT
:
314 case NL80211_IFTYPE_STATION
:
315 case NL80211_IFTYPE_MONITOR
:
316 case NL80211_IFTYPE_ADHOC
:
317 /* no special treatment */
319 case NL80211_IFTYPE_UNSPECIFIED
:
320 case NUM_NL80211_IFTYPES
:
321 case NL80211_IFTYPE_P2P_CLIENT
:
322 case NL80211_IFTYPE_P2P_GO
:
328 if (local
->open_count
== 0) {
329 res
= drv_start(local
);
332 if (local
->ops
->napi_poll
)
333 napi_enable(&local
->napi
);
334 /* we're brought up, everything changes */
335 hw_reconf_flags
= ~0;
336 ieee80211_led_radio(local
, true);
337 ieee80211_mod_tpt_led_trig(local
,
338 IEEE80211_TPT_LEDTRIG_FL_RADIO
, 0);
342 * Copy the hopefully now-present MAC address to
343 * this interface, if it has the special null one.
345 if (is_zero_ether_addr(dev
->dev_addr
)) {
346 memcpy(dev
->dev_addr
,
347 local
->hw
.wiphy
->perm_addr
,
349 memcpy(dev
->perm_addr
, dev
->dev_addr
, ETH_ALEN
);
351 if (!is_valid_ether_addr(dev
->dev_addr
)) {
352 if (!local
->open_count
)
354 return -EADDRNOTAVAIL
;
358 switch (sdata
->vif
.type
) {
359 case NL80211_IFTYPE_AP_VLAN
:
360 /* no need to tell driver, but set carrier */
361 if (rtnl_dereference(sdata
->bss
->beacon
))
362 netif_carrier_on(dev
);
364 netif_carrier_off(dev
);
366 case NL80211_IFTYPE_MONITOR
:
367 if (sdata
->u
.mntr_flags
& MONITOR_FLAG_COOK_FRAMES
) {
368 local
->cooked_mntrs
++;
372 if (local
->monitors
== 0 && local
->open_count
== 0) {
373 res
= ieee80211_add_virtual_monitor(local
);
378 /* must be before the call to ieee80211_configure_filter */
380 if (local
->monitors
== 1) {
381 local
->hw
.conf
.flags
|= IEEE80211_CONF_MONITOR
;
382 hw_reconf_flags
|= IEEE80211_CONF_CHANGE_MONITOR
;
385 ieee80211_adjust_monitor_flags(sdata
, 1);
386 ieee80211_configure_filter(local
);
388 netif_carrier_on(dev
);
392 ieee80211_del_virtual_monitor(local
);
394 res
= drv_add_interface(local
, sdata
);
397 res
= ieee80211_check_queues(sdata
);
399 goto err_del_interface
;
402 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
404 local
->fif_probe_req
++;
406 ieee80211_configure_filter(local
);
407 } else if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
) {
408 local
->fif_probe_req
++;
411 changed
|= ieee80211_reset_erp_info(sdata
);
412 ieee80211_bss_info_change_notify(sdata
, changed
);
414 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
||
415 sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
||
416 sdata
->vif
.type
== NL80211_IFTYPE_AP
)
417 netif_carrier_off(dev
);
419 netif_carrier_on(dev
);
422 * set default queue parameters so drivers don't
423 * need to initialise the hardware if the hardware
424 * doesn't start up with sane defaults
426 ieee80211_set_wmm_default(sdata
, true);
429 set_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
431 if (sdata
->vif
.type
== NL80211_IFTYPE_WDS
) {
432 /* Create STA entry for the WDS peer */
433 sta
= sta_info_alloc(sdata
, sdata
->u
.wds
.remote_addr
,
437 goto err_del_interface
;
440 sta_info_pre_move_state(sta
, IEEE80211_STA_AUTH
);
441 sta_info_pre_move_state(sta
, IEEE80211_STA_ASSOC
);
442 sta_info_pre_move_state(sta
, IEEE80211_STA_AUTHORIZED
);
444 res
= sta_info_insert(sta
);
446 /* STA has been freed */
447 goto err_del_interface
;
450 rate_control_rate_init(sta
);
454 * set_multicast_list will be invoked by the networking core
455 * which will check whether any increments here were done in
456 * error and sync them down to the hardware as filter flags.
458 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
459 atomic_inc(&local
->iff_allmultis
);
461 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
462 atomic_inc(&local
->iff_promiscs
);
464 mutex_lock(&local
->mtx
);
465 hw_reconf_flags
|= __ieee80211_recalc_idle(local
);
466 mutex_unlock(&local
->mtx
);
472 ieee80211_hw_config(local
, hw_reconf_flags
);
474 ieee80211_recalc_ps(local
, -1);
476 netif_tx_start_all_queues(dev
);
480 drv_remove_interface(local
, sdata
);
482 if (!local
->open_count
)
486 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
)
487 list_del(&sdata
->u
.vlan
.list
);
488 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
492 static int ieee80211_open(struct net_device
*dev
)
494 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
497 /* fail early if user set an invalid address */
498 if (!is_valid_ether_addr(dev
->dev_addr
))
499 return -EADDRNOTAVAIL
;
501 err
= ieee80211_check_concurrent_iface(sdata
, sdata
->vif
.type
);
505 return ieee80211_do_open(dev
, true);
508 static void ieee80211_do_stop(struct ieee80211_sub_if_data
*sdata
,
511 struct ieee80211_local
*local
= sdata
->local
;
513 struct sk_buff
*skb
, *tmp
;
514 u32 hw_reconf_flags
= 0;
516 enum nl80211_channel_type orig_ct
;
518 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
520 if (local
->scan_sdata
== sdata
)
521 ieee80211_scan_cancel(local
);
524 * Stop TX on this interface first.
526 netif_tx_stop_all_queues(sdata
->dev
);
529 * Purge work for this interface.
531 ieee80211_work_purge(sdata
);
534 * Remove all stations associated with this interface.
536 * This must be done before calling ops->remove_interface()
537 * because otherwise we can later invoke ops->sta_notify()
538 * whenever the STAs are removed, and that invalidates driver
539 * assumptions about always getting a vif pointer that is valid
540 * (because if we remove a STA after ops->remove_interface()
541 * the driver will have removed the vif info already!)
543 * This is relevant only in AP, WDS and mesh modes, since in
544 * all other modes we've already removed all stations when
547 sta_info_flush(local
, sdata
);
550 * Don't count this interface for promisc/allmulti while it
551 * is down. dev_mc_unsync() will invoke set_multicast_list
552 * on the master interface which will sync these down to the
553 * hardware as filter flags.
555 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
556 atomic_dec(&local
->iff_allmultis
);
558 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
559 atomic_dec(&local
->iff_promiscs
);
561 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
563 local
->fif_probe_req
--;
564 } else if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
) {
565 local
->fif_probe_req
--;
568 netif_addr_lock_bh(sdata
->dev
);
569 spin_lock_bh(&local
->filter_lock
);
570 __hw_addr_unsync(&local
->mc_list
, &sdata
->dev
->mc
,
571 sdata
->dev
->addr_len
);
572 spin_unlock_bh(&local
->filter_lock
);
573 netif_addr_unlock_bh(sdata
->dev
);
575 ieee80211_configure_filter(local
);
577 del_timer_sync(&local
->dynamic_ps_timer
);
578 cancel_work_sync(&local
->dynamic_ps_enable_work
);
580 /* APs need special treatment */
581 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
582 struct ieee80211_sub_if_data
*vlan
, *tmpsdata
;
583 struct beacon_data
*old_beacon
=
584 rtnl_dereference(sdata
->u
.ap
.beacon
);
585 struct sk_buff
*old_probe_resp
=
586 rtnl_dereference(sdata
->u
.ap
.probe_resp
);
588 /* sdata_running will return false, so this will disable */
589 ieee80211_bss_info_change_notify(sdata
,
590 BSS_CHANGED_BEACON_ENABLED
);
592 /* remove beacon and probe response */
593 RCU_INIT_POINTER(sdata
->u
.ap
.beacon
, NULL
);
594 RCU_INIT_POINTER(sdata
->u
.ap
.probe_resp
, NULL
);
597 kfree_skb(old_probe_resp
);
599 /* down all dependent devices, that is VLANs */
600 list_for_each_entry_safe(vlan
, tmpsdata
, &sdata
->u
.ap
.vlans
,
602 dev_close(vlan
->dev
);
603 WARN_ON(!list_empty(&sdata
->u
.ap
.vlans
));
605 /* free all potentially still buffered bcast frames */
606 local
->total_ps_buffered
-= skb_queue_len(&sdata
->u
.ap
.ps_bc_buf
);
607 skb_queue_purge(&sdata
->u
.ap
.ps_bc_buf
);
613 switch (sdata
->vif
.type
) {
614 case NL80211_IFTYPE_AP_VLAN
:
615 list_del(&sdata
->u
.vlan
.list
);
616 /* no need to tell driver */
618 case NL80211_IFTYPE_MONITOR
:
619 if (sdata
->u
.mntr_flags
& MONITOR_FLAG_COOK_FRAMES
) {
620 local
->cooked_mntrs
--;
625 if (local
->monitors
== 0) {
626 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_MONITOR
;
627 hw_reconf_flags
|= IEEE80211_CONF_CHANGE_MONITOR
;
628 ieee80211_del_virtual_monitor(local
);
631 ieee80211_adjust_monitor_flags(sdata
, -1);
632 ieee80211_configure_filter(local
);
635 flush_work(&sdata
->work
);
637 * When we get here, the interface is marked down.
638 * Call synchronize_rcu() to wait for the RX path
639 * should it be using the interface and enqueuing
640 * frames at this very time on another CPU.
643 skb_queue_purge(&sdata
->skb_queue
);
646 * Disable beaconing here for mesh only, AP and IBSS
647 * are already taken care of.
649 if (sdata
->vif
.type
== NL80211_IFTYPE_MESH_POINT
)
650 ieee80211_bss_info_change_notify(sdata
,
651 BSS_CHANGED_BEACON_ENABLED
);
654 * Free all remaining keys, there shouldn't be any,
655 * except maybe group keys in AP more or WDS?
657 ieee80211_free_keys(sdata
);
660 drv_remove_interface(local
, sdata
);
665 mutex_lock(&local
->mtx
);
666 hw_reconf_flags
|= __ieee80211_recalc_idle(local
);
667 mutex_unlock(&local
->mtx
);
669 ieee80211_recalc_ps(local
, -1);
671 if (local
->open_count
== 0) {
672 if (local
->ops
->napi_poll
)
673 napi_disable(&local
->napi
);
674 ieee80211_clear_tx_pending(local
);
675 ieee80211_stop_device(local
);
677 /* no reconfiguring after stop! */
681 /* Re-calculate channel-type, in case there are multiple vifs
682 * on different channel types.
684 orig_ct
= local
->_oper_channel_type
;
685 ieee80211_set_channel_type(local
, NULL
, NL80211_CHAN_NO_HT
);
687 /* do after stop to avoid reconfiguring when we stop anyway */
688 if (hw_reconf_flags
|| (orig_ct
!= local
->_oper_channel_type
))
689 ieee80211_hw_config(local
, hw_reconf_flags
);
691 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
692 for (i
= 0; i
< IEEE80211_MAX_QUEUES
; i
++) {
693 skb_queue_walk_safe(&local
->pending
[i
], skb
, tmp
) {
694 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
695 if (info
->control
.vif
== &sdata
->vif
) {
696 __skb_unlink(skb
, &local
->pending
[i
]);
697 dev_kfree_skb_irq(skb
);
701 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
703 if (local
->monitors
== local
->open_count
&& local
->monitors
> 0)
704 ieee80211_add_virtual_monitor(local
);
707 static int ieee80211_stop(struct net_device
*dev
)
709 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
711 ieee80211_do_stop(sdata
, true);
716 static void ieee80211_set_multicast_list(struct net_device
*dev
)
718 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
719 struct ieee80211_local
*local
= sdata
->local
;
720 int allmulti
, promisc
, sdata_allmulti
, sdata_promisc
;
722 allmulti
= !!(dev
->flags
& IFF_ALLMULTI
);
723 promisc
= !!(dev
->flags
& IFF_PROMISC
);
724 sdata_allmulti
= !!(sdata
->flags
& IEEE80211_SDATA_ALLMULTI
);
725 sdata_promisc
= !!(sdata
->flags
& IEEE80211_SDATA_PROMISC
);
727 if (allmulti
!= sdata_allmulti
) {
728 if (dev
->flags
& IFF_ALLMULTI
)
729 atomic_inc(&local
->iff_allmultis
);
731 atomic_dec(&local
->iff_allmultis
);
732 sdata
->flags
^= IEEE80211_SDATA_ALLMULTI
;
735 if (promisc
!= sdata_promisc
) {
736 if (dev
->flags
& IFF_PROMISC
)
737 atomic_inc(&local
->iff_promiscs
);
739 atomic_dec(&local
->iff_promiscs
);
740 sdata
->flags
^= IEEE80211_SDATA_PROMISC
;
742 spin_lock_bh(&local
->filter_lock
);
743 __hw_addr_sync(&local
->mc_list
, &dev
->mc
, dev
->addr_len
);
744 spin_unlock_bh(&local
->filter_lock
);
745 ieee80211_queue_work(&local
->hw
, &local
->reconfig_filter
);
749 * Called when the netdev is removed or, by the code below, before
750 * the interface type changes.
752 static void ieee80211_teardown_sdata(struct net_device
*dev
)
754 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
755 struct ieee80211_local
*local
= sdata
->local
;
759 /* free extra data */
760 ieee80211_free_keys(sdata
);
762 ieee80211_debugfs_remove_netdev(sdata
);
764 for (i
= 0; i
< IEEE80211_FRAGMENT_MAX
; i
++)
765 __skb_queue_purge(&sdata
->fragments
[i
].skb_list
);
766 sdata
->fragment_next
= 0;
768 if (ieee80211_vif_is_mesh(&sdata
->vif
))
769 mesh_rmc_free(sdata
);
770 else if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
)
771 ieee80211_mgd_teardown(sdata
);
773 flushed
= sta_info_flush(local
, sdata
);
777 static u16
ieee80211_netdev_select_queue(struct net_device
*dev
,
780 return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev
), skb
);
783 static const struct net_device_ops ieee80211_dataif_ops
= {
784 .ndo_open
= ieee80211_open
,
785 .ndo_stop
= ieee80211_stop
,
786 .ndo_uninit
= ieee80211_teardown_sdata
,
787 .ndo_start_xmit
= ieee80211_subif_start_xmit
,
788 .ndo_set_rx_mode
= ieee80211_set_multicast_list
,
789 .ndo_change_mtu
= ieee80211_change_mtu
,
790 .ndo_set_mac_address
= ieee80211_change_mac
,
791 .ndo_select_queue
= ieee80211_netdev_select_queue
,
794 static u16
ieee80211_monitor_select_queue(struct net_device
*dev
,
797 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
798 struct ieee80211_local
*local
= sdata
->local
;
799 struct ieee80211_hdr
*hdr
;
800 struct ieee80211_radiotap_header
*rtap
= (void *)skb
->data
;
802 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
806 skb
->len
< le16_to_cpu(rtap
->it_len
) + 2 /* frame control */)
807 return 0; /* doesn't matter, frame will be dropped */
809 hdr
= (void *)((u8
*)skb
->data
+ le16_to_cpu(rtap
->it_len
));
811 return ieee80211_select_queue_80211(local
, skb
, hdr
);
814 static const struct net_device_ops ieee80211_monitorif_ops
= {
815 .ndo_open
= ieee80211_open
,
816 .ndo_stop
= ieee80211_stop
,
817 .ndo_uninit
= ieee80211_teardown_sdata
,
818 .ndo_start_xmit
= ieee80211_monitor_start_xmit
,
819 .ndo_set_rx_mode
= ieee80211_set_multicast_list
,
820 .ndo_change_mtu
= ieee80211_change_mtu
,
821 .ndo_set_mac_address
= eth_mac_addr
,
822 .ndo_select_queue
= ieee80211_monitor_select_queue
,
825 static void ieee80211_if_setup(struct net_device
*dev
)
828 dev
->priv_flags
&= ~IFF_TX_SKB_SHARING
;
829 dev
->netdev_ops
= &ieee80211_dataif_ops
;
830 dev
->destructor
= free_netdev
;
833 static void ieee80211_iface_work(struct work_struct
*work
)
835 struct ieee80211_sub_if_data
*sdata
=
836 container_of(work
, struct ieee80211_sub_if_data
, work
);
837 struct ieee80211_local
*local
= sdata
->local
;
839 struct sta_info
*sta
;
840 struct ieee80211_ra_tid
*ra_tid
;
842 if (!ieee80211_sdata_running(sdata
))
849 * ieee80211_queue_work() should have picked up most cases,
850 * here we'll pick the rest.
852 if (WARN(local
->suspended
,
853 "interface work scheduled while going to suspend\n"))
856 /* first process frames */
857 while ((skb
= skb_dequeue(&sdata
->skb_queue
))) {
858 struct ieee80211_mgmt
*mgmt
= (void *)skb
->data
;
860 if (skb
->pkt_type
== IEEE80211_SDATA_QUEUE_AGG_START
) {
861 ra_tid
= (void *)&skb
->cb
;
862 ieee80211_start_tx_ba_cb(&sdata
->vif
, ra_tid
->ra
,
864 } else if (skb
->pkt_type
== IEEE80211_SDATA_QUEUE_AGG_STOP
) {
865 ra_tid
= (void *)&skb
->cb
;
866 ieee80211_stop_tx_ba_cb(&sdata
->vif
, ra_tid
->ra
,
868 } else if (ieee80211_is_action(mgmt
->frame_control
) &&
869 mgmt
->u
.action
.category
== WLAN_CATEGORY_BACK
) {
872 mutex_lock(&local
->sta_mtx
);
873 sta
= sta_info_get_bss(sdata
, mgmt
->sa
);
875 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
876 case WLAN_ACTION_ADDBA_REQ
:
877 ieee80211_process_addba_request(
878 local
, sta
, mgmt
, len
);
880 case WLAN_ACTION_ADDBA_RESP
:
881 ieee80211_process_addba_resp(local
, sta
,
884 case WLAN_ACTION_DELBA
:
885 ieee80211_process_delba(sdata
, sta
,
893 mutex_unlock(&local
->sta_mtx
);
894 } else if (ieee80211_is_data_qos(mgmt
->frame_control
)) {
895 struct ieee80211_hdr
*hdr
= (void *)mgmt
;
897 * So the frame isn't mgmt, but frame_control
898 * is at the right place anyway, of course, so
899 * the if statement is correct.
901 * Warn if we have other data frame types here,
902 * they must not get here.
904 WARN_ON(hdr
->frame_control
&
905 cpu_to_le16(IEEE80211_STYPE_NULLFUNC
));
906 WARN_ON(!(hdr
->seq_ctrl
&
907 cpu_to_le16(IEEE80211_SCTL_FRAG
)));
909 * This was a fragment of a frame, received while
910 * a block-ack session was active. That cannot be
911 * right, so terminate the session.
913 mutex_lock(&local
->sta_mtx
);
914 sta
= sta_info_get_bss(sdata
, mgmt
->sa
);
916 u16 tid
= *ieee80211_get_qos_ctl(hdr
) &
917 IEEE80211_QOS_CTL_TID_MASK
;
919 __ieee80211_stop_rx_ba_session(
920 sta
, tid
, WLAN_BACK_RECIPIENT
,
921 WLAN_REASON_QSTA_REQUIRE_SETUP
,
924 mutex_unlock(&local
->sta_mtx
);
925 } else switch (sdata
->vif
.type
) {
926 case NL80211_IFTYPE_STATION
:
927 ieee80211_sta_rx_queued_mgmt(sdata
, skb
);
929 case NL80211_IFTYPE_ADHOC
:
930 ieee80211_ibss_rx_queued_mgmt(sdata
, skb
);
932 case NL80211_IFTYPE_MESH_POINT
:
933 if (!ieee80211_vif_is_mesh(&sdata
->vif
))
935 ieee80211_mesh_rx_queued_mgmt(sdata
, skb
);
938 WARN(1, "frame for unexpected interface type");
945 /* then other type-dependent work */
946 switch (sdata
->vif
.type
) {
947 case NL80211_IFTYPE_STATION
:
948 ieee80211_sta_work(sdata
);
950 case NL80211_IFTYPE_ADHOC
:
951 ieee80211_ibss_work(sdata
);
953 case NL80211_IFTYPE_MESH_POINT
:
954 if (!ieee80211_vif_is_mesh(&sdata
->vif
))
956 ieee80211_mesh_work(sdata
);
965 * Helper function to initialise an interface to a specific type.
967 static void ieee80211_setup_sdata(struct ieee80211_sub_if_data
*sdata
,
968 enum nl80211_iftype type
)
970 /* clear type-dependent union */
971 memset(&sdata
->u
, 0, sizeof(sdata
->u
));
973 /* and set some type-dependent values */
974 sdata
->vif
.type
= type
;
975 sdata
->vif
.p2p
= false;
976 sdata
->dev
->netdev_ops
= &ieee80211_dataif_ops
;
977 sdata
->wdev
.iftype
= type
;
979 sdata
->control_port_protocol
= cpu_to_be16(ETH_P_PAE
);
980 sdata
->control_port_no_encrypt
= false;
982 sdata
->noack_map
= 0;
984 /* only monitor differs */
985 sdata
->dev
->type
= ARPHRD_ETHER
;
987 skb_queue_head_init(&sdata
->skb_queue
);
988 INIT_WORK(&sdata
->work
, ieee80211_iface_work
);
991 case NL80211_IFTYPE_P2P_GO
:
992 type
= NL80211_IFTYPE_AP
;
993 sdata
->vif
.type
= type
;
994 sdata
->vif
.p2p
= true;
996 case NL80211_IFTYPE_AP
:
997 skb_queue_head_init(&sdata
->u
.ap
.ps_bc_buf
);
998 INIT_LIST_HEAD(&sdata
->u
.ap
.vlans
);
1000 case NL80211_IFTYPE_P2P_CLIENT
:
1001 type
= NL80211_IFTYPE_STATION
;
1002 sdata
->vif
.type
= type
;
1003 sdata
->vif
.p2p
= true;
1005 case NL80211_IFTYPE_STATION
:
1006 ieee80211_sta_setup_sdata(sdata
);
1008 case NL80211_IFTYPE_ADHOC
:
1009 ieee80211_ibss_setup_sdata(sdata
);
1011 case NL80211_IFTYPE_MESH_POINT
:
1012 if (ieee80211_vif_is_mesh(&sdata
->vif
))
1013 ieee80211_mesh_init_sdata(sdata
);
1015 case NL80211_IFTYPE_MONITOR
:
1016 sdata
->dev
->type
= ARPHRD_IEEE80211_RADIOTAP
;
1017 sdata
->dev
->netdev_ops
= &ieee80211_monitorif_ops
;
1018 sdata
->u
.mntr_flags
= MONITOR_FLAG_CONTROL
|
1019 MONITOR_FLAG_OTHER_BSS
;
1021 case NL80211_IFTYPE_WDS
:
1022 case NL80211_IFTYPE_AP_VLAN
:
1024 case NL80211_IFTYPE_UNSPECIFIED
:
1025 case NUM_NL80211_IFTYPES
:
1030 ieee80211_debugfs_add_netdev(sdata
);
1033 static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data
*sdata
,
1034 enum nl80211_iftype type
)
1036 struct ieee80211_local
*local
= sdata
->local
;
1038 enum nl80211_iftype internal_type
= type
;
1043 if (!local
->ops
->change_interface
)
1046 switch (sdata
->vif
.type
) {
1047 case NL80211_IFTYPE_AP
:
1048 case NL80211_IFTYPE_STATION
:
1049 case NL80211_IFTYPE_ADHOC
:
1051 * Could maybe also all others here?
1052 * Just not sure how that interacts
1053 * with the RX/config path e.g. for
1062 case NL80211_IFTYPE_AP
:
1063 case NL80211_IFTYPE_STATION
:
1064 case NL80211_IFTYPE_ADHOC
:
1066 * Could probably support everything
1067 * but WDS here (WDS do_open can fail
1068 * under memory pressure, which this
1069 * code isn't prepared to handle).
1072 case NL80211_IFTYPE_P2P_CLIENT
:
1074 internal_type
= NL80211_IFTYPE_STATION
;
1076 case NL80211_IFTYPE_P2P_GO
:
1078 internal_type
= NL80211_IFTYPE_AP
;
1084 ret
= ieee80211_check_concurrent_iface(sdata
, internal_type
);
1088 ieee80211_do_stop(sdata
, false);
1090 ieee80211_teardown_sdata(sdata
->dev
);
1092 ret
= drv_change_interface(local
, sdata
, internal_type
, p2p
);
1094 type
= sdata
->vif
.type
;
1097 * Ignore return value here, there's not much we can do since
1098 * the driver changed the interface type internally already.
1099 * The warnings will hopefully make driver authors fix it :-)
1101 ieee80211_check_queues(sdata
);
1103 ieee80211_setup_sdata(sdata
, type
);
1105 err
= ieee80211_do_open(sdata
->dev
, false);
1106 WARN(err
, "type change: do_open returned %d", err
);
1111 int ieee80211_if_change_type(struct ieee80211_sub_if_data
*sdata
,
1112 enum nl80211_iftype type
)
1118 if (type
== ieee80211_vif_type_p2p(&sdata
->vif
))
1121 /* Setting ad-hoc mode on non-IBSS channel is not supported. */
1122 if (sdata
->local
->oper_channel
->flags
& IEEE80211_CHAN_NO_IBSS
&&
1123 type
== NL80211_IFTYPE_ADHOC
)
1126 if (ieee80211_sdata_running(sdata
)) {
1127 ret
= ieee80211_runtime_change_iftype(sdata
, type
);
1131 /* Purge and reset type-dependent state. */
1132 ieee80211_teardown_sdata(sdata
->dev
);
1133 ieee80211_setup_sdata(sdata
, type
);
1136 /* reset some values that shouldn't be kept across type changes */
1137 sdata
->vif
.bss_conf
.basic_rates
=
1138 ieee80211_mandatory_rates(sdata
->local
,
1139 sdata
->local
->hw
.conf
.channel
->band
);
1140 sdata
->drop_unencrypted
= 0;
1141 if (type
== NL80211_IFTYPE_STATION
)
1142 sdata
->u
.mgd
.use_4addr
= false;
1147 static void ieee80211_assign_perm_addr(struct ieee80211_local
*local
,
1148 struct net_device
*dev
,
1149 enum nl80211_iftype type
)
1151 struct ieee80211_sub_if_data
*sdata
;
1152 u64 mask
, start
, addr
, val
, inc
;
1154 u8 tmp_addr
[ETH_ALEN
];
1157 /* default ... something at least */
1158 memcpy(dev
->perm_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1160 if (is_zero_ether_addr(local
->hw
.wiphy
->addr_mask
) &&
1161 local
->hw
.wiphy
->n_addresses
<= 1)
1165 mutex_lock(&local
->iflist_mtx
);
1168 case NL80211_IFTYPE_MONITOR
:
1169 /* doesn't matter */
1171 case NL80211_IFTYPE_WDS
:
1172 case NL80211_IFTYPE_AP_VLAN
:
1173 /* match up with an AP interface */
1174 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1175 if (sdata
->vif
.type
!= NL80211_IFTYPE_AP
)
1177 memcpy(dev
->perm_addr
, sdata
->vif
.addr
, ETH_ALEN
);
1180 /* keep default if no AP interface present */
1183 /* assign a new address if possible -- try n_addresses first */
1184 for (i
= 0; i
< local
->hw
.wiphy
->n_addresses
; i
++) {
1187 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1188 if (memcmp(local
->hw
.wiphy
->addresses
[i
].addr
,
1189 sdata
->vif
.addr
, ETH_ALEN
) == 0) {
1196 memcpy(dev
->perm_addr
,
1197 local
->hw
.wiphy
->addresses
[i
].addr
,
1203 /* try mask if available */
1204 if (is_zero_ether_addr(local
->hw
.wiphy
->addr_mask
))
1207 m
= local
->hw
.wiphy
->addr_mask
;
1208 mask
= ((u64
)m
[0] << 5*8) | ((u64
)m
[1] << 4*8) |
1209 ((u64
)m
[2] << 3*8) | ((u64
)m
[3] << 2*8) |
1210 ((u64
)m
[4] << 1*8) | ((u64
)m
[5] << 0*8);
1212 if (__ffs64(mask
) + hweight64(mask
) != fls64(mask
)) {
1213 /* not a contiguous mask ... not handled now! */
1214 printk(KERN_DEBUG
"not contiguous\n");
1218 m
= local
->hw
.wiphy
->perm_addr
;
1219 start
= ((u64
)m
[0] << 5*8) | ((u64
)m
[1] << 4*8) |
1220 ((u64
)m
[2] << 3*8) | ((u64
)m
[3] << 2*8) |
1221 ((u64
)m
[4] << 1*8) | ((u64
)m
[5] << 0*8);
1223 inc
= 1ULL<<__ffs64(mask
);
1224 val
= (start
& mask
);
1225 addr
= (start
& ~mask
) | (val
& mask
);
1229 tmp_addr
[5] = addr
>> 0*8;
1230 tmp_addr
[4] = addr
>> 1*8;
1231 tmp_addr
[3] = addr
>> 2*8;
1232 tmp_addr
[2] = addr
>> 3*8;
1233 tmp_addr
[1] = addr
>> 4*8;
1234 tmp_addr
[0] = addr
>> 5*8;
1238 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1239 if (memcmp(tmp_addr
, sdata
->vif
.addr
,
1247 memcpy(dev
->perm_addr
, tmp_addr
, ETH_ALEN
);
1250 addr
= (start
& ~mask
) | (val
& mask
);
1251 } while (addr
!= start
);
1256 mutex_unlock(&local
->iflist_mtx
);
1259 int ieee80211_if_add(struct ieee80211_local
*local
, const char *name
,
1260 struct net_device
**new_dev
, enum nl80211_iftype type
,
1261 struct vif_params
*params
)
1263 struct net_device
*ndev
;
1264 struct ieee80211_sub_if_data
*sdata
= NULL
;
1270 if (local
->hw
.queues
>= IEEE80211_NUM_ACS
)
1271 txqs
= IEEE80211_NUM_ACS
;
1273 ndev
= alloc_netdev_mqs(sizeof(*sdata
) + local
->hw
.vif_data_size
,
1274 name
, ieee80211_if_setup
, txqs
, 1);
1277 dev_net_set(ndev
, wiphy_net(local
->hw
.wiphy
));
1279 ndev
->needed_headroom
= local
->tx_headroom
+
1280 4*6 /* four MAC addresses */
1281 + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
1283 + 8 /* rfc1042/bridge tunnel */
1284 - ETH_HLEN
/* ethernet hard_header_len */
1285 + IEEE80211_ENCRYPT_HEADROOM
;
1286 ndev
->needed_tailroom
= IEEE80211_ENCRYPT_TAILROOM
;
1288 ret
= dev_alloc_name(ndev
, ndev
->name
);
1292 ieee80211_assign_perm_addr(local
, ndev
, type
);
1293 memcpy(ndev
->dev_addr
, ndev
->perm_addr
, ETH_ALEN
);
1294 SET_NETDEV_DEV(ndev
, wiphy_dev(local
->hw
.wiphy
));
1296 /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */
1297 sdata
= netdev_priv(ndev
);
1298 ndev
->ieee80211_ptr
= &sdata
->wdev
;
1299 memcpy(sdata
->vif
.addr
, ndev
->dev_addr
, ETH_ALEN
);
1300 memcpy(sdata
->name
, ndev
->name
, IFNAMSIZ
);
1302 /* initialise type-independent data */
1303 sdata
->wdev
.wiphy
= local
->hw
.wiphy
;
1304 sdata
->local
= local
;
1307 sdata
->arp_filter_state
= true;
1310 for (i
= 0; i
< IEEE80211_FRAGMENT_MAX
; i
++)
1311 skb_queue_head_init(&sdata
->fragments
[i
].skb_list
);
1313 INIT_LIST_HEAD(&sdata
->key_list
);
1315 for (i
= 0; i
< IEEE80211_NUM_BANDS
; i
++) {
1316 struct ieee80211_supported_band
*sband
;
1317 sband
= local
->hw
.wiphy
->bands
[i
];
1318 sdata
->rc_rateidx_mask
[i
] =
1319 sband
? (1 << sband
->n_bitrates
) - 1 : 0;
1321 memcpy(sdata
->rc_rateidx_mcs_mask
[i
],
1322 sband
->ht_cap
.mcs
.rx_mask
,
1323 sizeof(sdata
->rc_rateidx_mcs_mask
[i
]));
1325 memset(sdata
->rc_rateidx_mcs_mask
[i
], 0,
1326 sizeof(sdata
->rc_rateidx_mcs_mask
[i
]));
1329 ieee80211_set_default_queues(sdata
);
1331 /* setup type-dependent data */
1332 ieee80211_setup_sdata(sdata
, type
);
1335 ndev
->ieee80211_ptr
->use_4addr
= params
->use_4addr
;
1336 if (type
== NL80211_IFTYPE_STATION
)
1337 sdata
->u
.mgd
.use_4addr
= params
->use_4addr
;
1340 ret
= register_netdevice(ndev
);
1344 mutex_lock(&local
->iflist_mtx
);
1345 list_add_tail_rcu(&sdata
->list
, &local
->interfaces
);
1346 mutex_unlock(&local
->iflist_mtx
);
1358 void ieee80211_if_remove(struct ieee80211_sub_if_data
*sdata
)
1362 mutex_lock(&sdata
->local
->iflist_mtx
);
1363 list_del_rcu(&sdata
->list
);
1364 mutex_unlock(&sdata
->local
->iflist_mtx
);
1366 if (ieee80211_vif_is_mesh(&sdata
->vif
))
1367 mesh_path_flush_by_iface(sdata
);
1370 unregister_netdevice(sdata
->dev
);
1374 * Remove all interfaces, may only be called at hardware unregistration
1375 * time because it doesn't do RCU-safe list removals.
1377 void ieee80211_remove_interfaces(struct ieee80211_local
*local
)
1379 struct ieee80211_sub_if_data
*sdata
, *tmp
;
1380 LIST_HEAD(unreg_list
);
1384 mutex_lock(&local
->iflist_mtx
);
1385 list_for_each_entry_safe(sdata
, tmp
, &local
->interfaces
, list
) {
1386 list_del(&sdata
->list
);
1388 if (ieee80211_vif_is_mesh(&sdata
->vif
))
1389 mesh_path_flush_by_iface(sdata
);
1391 unregister_netdevice_queue(sdata
->dev
, &unreg_list
);
1393 mutex_unlock(&local
->iflist_mtx
);
1394 unregister_netdevice_many(&unreg_list
);
1395 list_del(&unreg_list
);
1398 static u32
ieee80211_idle_off(struct ieee80211_local
*local
,
1401 if (!(local
->hw
.conf
.flags
& IEEE80211_CONF_IDLE
))
1404 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
1405 wiphy_debug(local
->hw
.wiphy
, "device no longer idle - %s\n", reason
);
1408 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_IDLE
;
1409 return IEEE80211_CONF_CHANGE_IDLE
;
1412 static u32
ieee80211_idle_on(struct ieee80211_local
*local
)
1414 if (local
->hw
.conf
.flags
& IEEE80211_CONF_IDLE
)
1417 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
1418 wiphy_debug(local
->hw
.wiphy
, "device now idle\n");
1421 drv_flush(local
, false);
1423 local
->hw
.conf
.flags
|= IEEE80211_CONF_IDLE
;
1424 return IEEE80211_CONF_CHANGE_IDLE
;
1427 u32
__ieee80211_recalc_idle(struct ieee80211_local
*local
)
1429 struct ieee80211_sub_if_data
*sdata
;
1431 bool working
= false, scanning
= false, hw_roc
= false;
1432 struct ieee80211_work
*wk
;
1433 unsigned int led_trig_start
= 0, led_trig_stop
= 0;
1435 #ifdef CONFIG_PROVE_LOCKING
1436 WARN_ON(debug_locks
&& !lockdep_rtnl_is_held() &&
1437 !lockdep_is_held(&local
->iflist_mtx
));
1439 lockdep_assert_held(&local
->mtx
);
1441 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1442 if (!ieee80211_sdata_running(sdata
)) {
1443 sdata
->vif
.bss_conf
.idle
= true;
1447 sdata
->old_idle
= sdata
->vif
.bss_conf
.idle
;
1449 /* do not count disabled managed interfaces */
1450 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
&&
1451 !sdata
->u
.mgd
.associated
&&
1452 !sdata
->u
.mgd
.auth_data
&&
1453 !sdata
->u
.mgd
.assoc_data
) {
1454 sdata
->vif
.bss_conf
.idle
= true;
1457 /* do not count unused IBSS interfaces */
1458 if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
&&
1459 !sdata
->u
.ibss
.ssid_len
) {
1460 sdata
->vif
.bss_conf
.idle
= true;
1463 /* count everything else */
1464 sdata
->vif
.bss_conf
.idle
= false;
1468 list_for_each_entry(wk
, &local
->work_list
, list
) {
1470 wk
->sdata
->vif
.bss_conf
.idle
= false;
1473 if (local
->scan_sdata
&&
1474 !(local
->hw
.flags
& IEEE80211_HW_SCAN_WHILE_IDLE
)) {
1476 local
->scan_sdata
->vif
.bss_conf
.idle
= false;
1479 if (local
->hw_roc_channel
)
1482 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1483 if (sdata
->vif
.type
== NL80211_IFTYPE_MONITOR
||
1484 sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
)
1486 if (sdata
->old_idle
== sdata
->vif
.bss_conf
.idle
)
1488 if (!ieee80211_sdata_running(sdata
))
1490 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_IDLE
);
1493 if (working
|| scanning
|| hw_roc
)
1494 led_trig_start
|= IEEE80211_TPT_LEDTRIG_FL_WORK
;
1496 led_trig_stop
|= IEEE80211_TPT_LEDTRIG_FL_WORK
;
1499 led_trig_start
|= IEEE80211_TPT_LEDTRIG_FL_CONNECTED
;
1501 led_trig_stop
|= IEEE80211_TPT_LEDTRIG_FL_CONNECTED
;
1503 ieee80211_mod_tpt_led_trig(local
, led_trig_start
, led_trig_stop
);
1506 return ieee80211_idle_off(local
, "hw remain-on-channel");
1508 return ieee80211_idle_off(local
, "working");
1510 return ieee80211_idle_off(local
, "scanning");
1512 return ieee80211_idle_on(local
);
1514 return ieee80211_idle_off(local
, "in use");
1519 void ieee80211_recalc_idle(struct ieee80211_local
*local
)
1523 mutex_lock(&local
->iflist_mtx
);
1524 chg
= __ieee80211_recalc_idle(local
);
1525 mutex_unlock(&local
->iflist_mtx
);
1527 ieee80211_hw_config(local
, chg
);
1530 static int netdev_notify(struct notifier_block
*nb
,
1531 unsigned long state
,
1534 struct net_device
*dev
= ndev
;
1535 struct ieee80211_sub_if_data
*sdata
;
1537 if (state
!= NETDEV_CHANGENAME
)
1540 if (!dev
->ieee80211_ptr
|| !dev
->ieee80211_ptr
->wiphy
)
1543 if (dev
->ieee80211_ptr
->wiphy
->privid
!= mac80211_wiphy_privid
)
1546 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1548 memcpy(sdata
->name
, dev
->name
, IFNAMSIZ
);
1550 ieee80211_debugfs_rename_netdev(sdata
);
1554 static struct notifier_block mac80211_netdev_notifier
= {
1555 .notifier_call
= netdev_notify
,
1558 int ieee80211_iface_init(void)
1560 return register_netdevice_notifier(&mac80211_netdev_notifier
);
1563 void ieee80211_iface_exit(void)
1565 unregister_netdevice_notifier(&mac80211_netdev_notifier
);