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 (!ether_addr_equal(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
->local
->hw
.flags
& IEEE80211_HW_QUEUE_CONTROL
)) {
168 sdata
->vif
.cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
172 if (WARN_ON_ONCE(sdata
->vif
.cab_queue
== IEEE80211_INVAL_HW_QUEUE
))
175 if (WARN_ON_ONCE(sdata
->vif
.cab_queue
>= n_queues
))
181 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data
*sdata
,
184 struct ieee80211_local
*local
= sdata
->local
;
185 u32 flags
= sdata
->u
.mntr_flags
;
187 #define ADJUST(_f, _s) do { \
188 if (flags & MONITOR_FLAG_##_f) \
189 local->fif_##_s += offset; \
192 ADJUST(FCSFAIL
, fcsfail
);
193 ADJUST(PLCPFAIL
, plcpfail
);
194 ADJUST(CONTROL
, control
);
195 ADJUST(CONTROL
, pspoll
);
196 ADJUST(OTHER_BSS
, other_bss
);
201 static void ieee80211_set_default_queues(struct ieee80211_sub_if_data
*sdata
)
203 struct ieee80211_local
*local
= sdata
->local
;
206 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
207 if (local
->hw
.flags
& IEEE80211_HW_QUEUE_CONTROL
)
208 sdata
->vif
.hw_queue
[i
] = IEEE80211_INVAL_HW_QUEUE
;
209 else if (local
->hw
.queues
>= IEEE80211_NUM_ACS
)
210 sdata
->vif
.hw_queue
[i
] = i
;
212 sdata
->vif
.hw_queue
[i
] = 0;
214 sdata
->vif
.cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
217 static int ieee80211_add_virtual_monitor(struct ieee80211_local
*local
)
219 struct ieee80211_sub_if_data
*sdata
;
222 if (!(local
->hw
.flags
& IEEE80211_HW_WANT_MONITOR_VIF
))
225 if (local
->monitor_sdata
)
228 sdata
= kzalloc(sizeof(*sdata
) + local
->hw
.vif_data_size
, GFP_KERNEL
);
233 sdata
->local
= local
;
234 sdata
->vif
.type
= NL80211_IFTYPE_MONITOR
;
235 snprintf(sdata
->name
, IFNAMSIZ
, "%s-monitor",
236 wiphy_name(local
->hw
.wiphy
));
238 ieee80211_set_default_queues(sdata
);
240 ret
= drv_add_interface(local
, sdata
);
242 /* ok .. stupid driver, it asked for this! */
247 ret
= ieee80211_check_queues(sdata
);
253 rcu_assign_pointer(local
->monitor_sdata
, sdata
);
258 static void ieee80211_del_virtual_monitor(struct ieee80211_local
*local
)
260 struct ieee80211_sub_if_data
*sdata
;
262 if (!(local
->hw
.flags
& IEEE80211_HW_WANT_MONITOR_VIF
))
265 sdata
= rtnl_dereference(local
->monitor_sdata
);
270 rcu_assign_pointer(local
->monitor_sdata
, NULL
);
273 drv_remove_interface(local
, sdata
);
279 * NOTE: Be very careful when changing this function, it must NOT return
280 * an error on interface type changes that have been pre-checked, so most
281 * checks should be in ieee80211_check_concurrent_iface.
283 static int ieee80211_do_open(struct net_device
*dev
, bool coming_up
)
285 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
286 struct ieee80211_local
*local
= sdata
->local
;
287 struct sta_info
*sta
;
290 u32 hw_reconf_flags
= 0;
292 switch (sdata
->vif
.type
) {
293 case NL80211_IFTYPE_WDS
:
294 if (!is_valid_ether_addr(sdata
->u
.wds
.remote_addr
))
297 case NL80211_IFTYPE_AP_VLAN
: {
298 struct ieee80211_sub_if_data
*master
;
303 list_add(&sdata
->u
.vlan
.list
, &sdata
->bss
->vlans
);
305 master
= container_of(sdata
->bss
,
306 struct ieee80211_sub_if_data
, u
.ap
);
307 sdata
->control_port_protocol
=
308 master
->control_port_protocol
;
309 sdata
->control_port_no_encrypt
=
310 master
->control_port_no_encrypt
;
313 case NL80211_IFTYPE_AP
:
314 sdata
->bss
= &sdata
->u
.ap
;
316 case NL80211_IFTYPE_MESH_POINT
:
317 case NL80211_IFTYPE_STATION
:
318 case NL80211_IFTYPE_MONITOR
:
319 case NL80211_IFTYPE_ADHOC
:
320 /* no special treatment */
322 case NL80211_IFTYPE_UNSPECIFIED
:
323 case NUM_NL80211_IFTYPES
:
324 case NL80211_IFTYPE_P2P_CLIENT
:
325 case NL80211_IFTYPE_P2P_GO
:
331 if (local
->open_count
== 0) {
332 res
= drv_start(local
);
335 if (local
->ops
->napi_poll
)
336 napi_enable(&local
->napi
);
337 /* we're brought up, everything changes */
338 hw_reconf_flags
= ~0;
339 ieee80211_led_radio(local
, true);
340 ieee80211_mod_tpt_led_trig(local
,
341 IEEE80211_TPT_LEDTRIG_FL_RADIO
, 0);
345 * Copy the hopefully now-present MAC address to
346 * this interface, if it has the special null one.
348 if (is_zero_ether_addr(dev
->dev_addr
)) {
349 memcpy(dev
->dev_addr
,
350 local
->hw
.wiphy
->perm_addr
,
352 memcpy(dev
->perm_addr
, dev
->dev_addr
, ETH_ALEN
);
354 if (!is_valid_ether_addr(dev
->dev_addr
)) {
355 res
= -EADDRNOTAVAIL
;
360 switch (sdata
->vif
.type
) {
361 case NL80211_IFTYPE_AP_VLAN
:
362 /* no need to tell driver, but set carrier */
363 if (rtnl_dereference(sdata
->bss
->beacon
))
364 netif_carrier_on(dev
);
366 netif_carrier_off(dev
);
368 case NL80211_IFTYPE_MONITOR
:
369 if (sdata
->u
.mntr_flags
& MONITOR_FLAG_COOK_FRAMES
) {
370 local
->cooked_mntrs
++;
374 if (local
->monitors
== 0 && local
->open_count
== 0) {
375 res
= ieee80211_add_virtual_monitor(local
);
380 /* must be before the call to ieee80211_configure_filter */
382 if (local
->monitors
== 1) {
383 local
->hw
.conf
.flags
|= IEEE80211_CONF_MONITOR
;
384 hw_reconf_flags
|= IEEE80211_CONF_CHANGE_MONITOR
;
387 ieee80211_adjust_monitor_flags(sdata
, 1);
388 ieee80211_configure_filter(local
);
390 netif_carrier_on(dev
);
394 ieee80211_del_virtual_monitor(local
);
396 res
= drv_add_interface(local
, sdata
);
399 res
= ieee80211_check_queues(sdata
);
401 goto err_del_interface
;
404 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
406 local
->fif_probe_req
++;
408 ieee80211_configure_filter(local
);
409 } else if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
) {
410 local
->fif_probe_req
++;
413 changed
|= ieee80211_reset_erp_info(sdata
);
414 ieee80211_bss_info_change_notify(sdata
, changed
);
416 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
||
417 sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
||
418 sdata
->vif
.type
== NL80211_IFTYPE_AP
)
419 netif_carrier_off(dev
);
421 netif_carrier_on(dev
);
424 * set default queue parameters so drivers don't
425 * need to initialise the hardware if the hardware
426 * doesn't start up with sane defaults
428 ieee80211_set_wmm_default(sdata
, true);
431 set_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
433 if (sdata
->vif
.type
== NL80211_IFTYPE_WDS
) {
434 /* Create STA entry for the WDS peer */
435 sta
= sta_info_alloc(sdata
, sdata
->u
.wds
.remote_addr
,
439 goto err_del_interface
;
442 sta_info_pre_move_state(sta
, IEEE80211_STA_AUTH
);
443 sta_info_pre_move_state(sta
, IEEE80211_STA_ASSOC
);
444 sta_info_pre_move_state(sta
, IEEE80211_STA_AUTHORIZED
);
446 res
= sta_info_insert(sta
);
448 /* STA has been freed */
449 goto err_del_interface
;
452 rate_control_rate_init(sta
);
456 * set_multicast_list will be invoked by the networking core
457 * which will check whether any increments here were done in
458 * error and sync them down to the hardware as filter flags.
460 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
461 atomic_inc(&local
->iff_allmultis
);
463 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
464 atomic_inc(&local
->iff_promiscs
);
466 mutex_lock(&local
->mtx
);
467 hw_reconf_flags
|= __ieee80211_recalc_idle(local
);
468 mutex_unlock(&local
->mtx
);
474 ieee80211_hw_config(local
, hw_reconf_flags
);
476 ieee80211_recalc_ps(local
, -1);
478 netif_tx_start_all_queues(dev
);
482 drv_remove_interface(local
, sdata
);
484 if (!local
->open_count
)
488 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
)
489 list_del(&sdata
->u
.vlan
.list
);
490 /* might already be clear but that doesn't matter */
491 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
495 static int ieee80211_open(struct net_device
*dev
)
497 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
500 /* fail early if user set an invalid address */
501 if (!is_valid_ether_addr(dev
->dev_addr
))
502 return -EADDRNOTAVAIL
;
504 err
= ieee80211_check_concurrent_iface(sdata
, sdata
->vif
.type
);
508 return ieee80211_do_open(dev
, true);
511 static void ieee80211_do_stop(struct ieee80211_sub_if_data
*sdata
,
514 struct ieee80211_local
*local
= sdata
->local
;
516 struct sk_buff
*skb
, *tmp
;
517 u32 hw_reconf_flags
= 0;
519 enum nl80211_channel_type orig_ct
;
521 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
523 if (local
->scan_sdata
== sdata
)
524 ieee80211_scan_cancel(local
);
527 * Stop TX on this interface first.
529 netif_tx_stop_all_queues(sdata
->dev
);
532 * Purge work for this interface.
534 ieee80211_work_purge(sdata
);
537 * Remove all stations associated with this interface.
539 * This must be done before calling ops->remove_interface()
540 * because otherwise we can later invoke ops->sta_notify()
541 * whenever the STAs are removed, and that invalidates driver
542 * assumptions about always getting a vif pointer that is valid
543 * (because if we remove a STA after ops->remove_interface()
544 * the driver will have removed the vif info already!)
546 * This is relevant only in AP, WDS and mesh modes, since in
547 * all other modes we've already removed all stations when
550 sta_info_flush(local
, sdata
);
553 * Don't count this interface for promisc/allmulti while it
554 * is down. dev_mc_unsync() will invoke set_multicast_list
555 * on the master interface which will sync these down to the
556 * hardware as filter flags.
558 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
559 atomic_dec(&local
->iff_allmultis
);
561 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
562 atomic_dec(&local
->iff_promiscs
);
564 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
566 local
->fif_probe_req
--;
567 } else if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
) {
568 local
->fif_probe_req
--;
571 netif_addr_lock_bh(sdata
->dev
);
572 spin_lock_bh(&local
->filter_lock
);
573 __hw_addr_unsync(&local
->mc_list
, &sdata
->dev
->mc
,
574 sdata
->dev
->addr_len
);
575 spin_unlock_bh(&local
->filter_lock
);
576 netif_addr_unlock_bh(sdata
->dev
);
578 ieee80211_configure_filter(local
);
580 del_timer_sync(&local
->dynamic_ps_timer
);
581 cancel_work_sync(&local
->dynamic_ps_enable_work
);
583 /* APs need special treatment */
584 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
585 struct ieee80211_sub_if_data
*vlan
, *tmpsdata
;
586 struct beacon_data
*old_beacon
=
587 rtnl_dereference(sdata
->u
.ap
.beacon
);
588 struct sk_buff
*old_probe_resp
=
589 rtnl_dereference(sdata
->u
.ap
.probe_resp
);
591 /* sdata_running will return false, so this will disable */
592 ieee80211_bss_info_change_notify(sdata
,
593 BSS_CHANGED_BEACON_ENABLED
);
595 /* remove beacon and probe response */
596 RCU_INIT_POINTER(sdata
->u
.ap
.beacon
, NULL
);
597 RCU_INIT_POINTER(sdata
->u
.ap
.probe_resp
, NULL
);
600 kfree_skb(old_probe_resp
);
602 /* down all dependent devices, that is VLANs */
603 list_for_each_entry_safe(vlan
, tmpsdata
, &sdata
->u
.ap
.vlans
,
605 dev_close(vlan
->dev
);
606 WARN_ON(!list_empty(&sdata
->u
.ap
.vlans
));
608 /* free all potentially still buffered bcast frames */
609 local
->total_ps_buffered
-= skb_queue_len(&sdata
->u
.ap
.ps_bc_buf
);
610 skb_queue_purge(&sdata
->u
.ap
.ps_bc_buf
);
611 } else if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
) {
612 ieee80211_mgd_stop(sdata
);
618 switch (sdata
->vif
.type
) {
619 case NL80211_IFTYPE_AP_VLAN
:
620 list_del(&sdata
->u
.vlan
.list
);
621 /* no need to tell driver */
623 case NL80211_IFTYPE_MONITOR
:
624 if (sdata
->u
.mntr_flags
& MONITOR_FLAG_COOK_FRAMES
) {
625 local
->cooked_mntrs
--;
630 if (local
->monitors
== 0) {
631 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_MONITOR
;
632 hw_reconf_flags
|= IEEE80211_CONF_CHANGE_MONITOR
;
633 ieee80211_del_virtual_monitor(local
);
636 ieee80211_adjust_monitor_flags(sdata
, -1);
637 ieee80211_configure_filter(local
);
640 mutex_lock(&local
->mtx
);
641 if (local
->hw_roc_dev
== sdata
->dev
&&
642 local
->hw_roc_channel
) {
643 /* ignore return value since this is racy */
644 drv_cancel_remain_on_channel(local
);
645 ieee80211_queue_work(&local
->hw
, &local
->hw_roc_done
);
647 mutex_unlock(&local
->mtx
);
649 flush_work(&local
->hw_roc_start
);
650 flush_work(&local
->hw_roc_done
);
652 flush_work(&sdata
->work
);
654 * When we get here, the interface is marked down.
655 * Call synchronize_rcu() to wait for the RX path
656 * should it be using the interface and enqueuing
657 * frames at this very time on another CPU.
660 skb_queue_purge(&sdata
->skb_queue
);
663 * Disable beaconing here for mesh only, AP and IBSS
664 * are already taken care of.
666 if (sdata
->vif
.type
== NL80211_IFTYPE_MESH_POINT
)
667 ieee80211_bss_info_change_notify(sdata
,
668 BSS_CHANGED_BEACON_ENABLED
);
671 * Free all remaining keys, there shouldn't be any,
672 * except maybe group keys in AP more or WDS?
674 ieee80211_free_keys(sdata
);
677 drv_remove_interface(local
, sdata
);
682 mutex_lock(&local
->mtx
);
683 hw_reconf_flags
|= __ieee80211_recalc_idle(local
);
684 mutex_unlock(&local
->mtx
);
686 ieee80211_recalc_ps(local
, -1);
688 if (local
->open_count
== 0) {
689 if (local
->ops
->napi_poll
)
690 napi_disable(&local
->napi
);
691 ieee80211_clear_tx_pending(local
);
692 ieee80211_stop_device(local
);
694 /* no reconfiguring after stop! */
698 /* Re-calculate channel-type, in case there are multiple vifs
699 * on different channel types.
701 orig_ct
= local
->_oper_channel_type
;
702 ieee80211_set_channel_type(local
, NULL
, NL80211_CHAN_NO_HT
);
704 /* do after stop to avoid reconfiguring when we stop anyway */
705 if (hw_reconf_flags
|| (orig_ct
!= local
->_oper_channel_type
))
706 ieee80211_hw_config(local
, hw_reconf_flags
);
708 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
709 for (i
= 0; i
< IEEE80211_MAX_QUEUES
; i
++) {
710 skb_queue_walk_safe(&local
->pending
[i
], skb
, tmp
) {
711 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
712 if (info
->control
.vif
== &sdata
->vif
) {
713 __skb_unlink(skb
, &local
->pending
[i
]);
714 dev_kfree_skb_irq(skb
);
718 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
720 if (local
->monitors
== local
->open_count
&& local
->monitors
> 0)
721 ieee80211_add_virtual_monitor(local
);
724 static int ieee80211_stop(struct net_device
*dev
)
726 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
728 ieee80211_do_stop(sdata
, true);
733 static void ieee80211_set_multicast_list(struct net_device
*dev
)
735 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
736 struct ieee80211_local
*local
= sdata
->local
;
737 int allmulti
, promisc
, sdata_allmulti
, sdata_promisc
;
739 allmulti
= !!(dev
->flags
& IFF_ALLMULTI
);
740 promisc
= !!(dev
->flags
& IFF_PROMISC
);
741 sdata_allmulti
= !!(sdata
->flags
& IEEE80211_SDATA_ALLMULTI
);
742 sdata_promisc
= !!(sdata
->flags
& IEEE80211_SDATA_PROMISC
);
744 if (allmulti
!= sdata_allmulti
) {
745 if (dev
->flags
& IFF_ALLMULTI
)
746 atomic_inc(&local
->iff_allmultis
);
748 atomic_dec(&local
->iff_allmultis
);
749 sdata
->flags
^= IEEE80211_SDATA_ALLMULTI
;
752 if (promisc
!= sdata_promisc
) {
753 if (dev
->flags
& IFF_PROMISC
)
754 atomic_inc(&local
->iff_promiscs
);
756 atomic_dec(&local
->iff_promiscs
);
757 sdata
->flags
^= IEEE80211_SDATA_PROMISC
;
759 spin_lock_bh(&local
->filter_lock
);
760 __hw_addr_sync(&local
->mc_list
, &dev
->mc
, dev
->addr_len
);
761 spin_unlock_bh(&local
->filter_lock
);
762 ieee80211_queue_work(&local
->hw
, &local
->reconfig_filter
);
766 * Called when the netdev is removed or, by the code below, before
767 * the interface type changes.
769 static void ieee80211_teardown_sdata(struct net_device
*dev
)
771 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
772 struct ieee80211_local
*local
= sdata
->local
;
776 /* free extra data */
777 ieee80211_free_keys(sdata
);
779 ieee80211_debugfs_remove_netdev(sdata
);
781 for (i
= 0; i
< IEEE80211_FRAGMENT_MAX
; i
++)
782 __skb_queue_purge(&sdata
->fragments
[i
].skb_list
);
783 sdata
->fragment_next
= 0;
785 if (ieee80211_vif_is_mesh(&sdata
->vif
))
786 mesh_rmc_free(sdata
);
788 flushed
= sta_info_flush(local
, sdata
);
792 static u16
ieee80211_netdev_select_queue(struct net_device
*dev
,
795 return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev
), skb
);
798 static const struct net_device_ops ieee80211_dataif_ops
= {
799 .ndo_open
= ieee80211_open
,
800 .ndo_stop
= ieee80211_stop
,
801 .ndo_uninit
= ieee80211_teardown_sdata
,
802 .ndo_start_xmit
= ieee80211_subif_start_xmit
,
803 .ndo_set_rx_mode
= ieee80211_set_multicast_list
,
804 .ndo_change_mtu
= ieee80211_change_mtu
,
805 .ndo_set_mac_address
= ieee80211_change_mac
,
806 .ndo_select_queue
= ieee80211_netdev_select_queue
,
809 static u16
ieee80211_monitor_select_queue(struct net_device
*dev
,
812 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
813 struct ieee80211_local
*local
= sdata
->local
;
814 struct ieee80211_hdr
*hdr
;
815 struct ieee80211_radiotap_header
*rtap
= (void *)skb
->data
;
817 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
821 skb
->len
< le16_to_cpu(rtap
->it_len
) + 2 /* frame control */)
822 return 0; /* doesn't matter, frame will be dropped */
824 hdr
= (void *)((u8
*)skb
->data
+ le16_to_cpu(rtap
->it_len
));
826 return ieee80211_select_queue_80211(local
, skb
, hdr
);
829 static const struct net_device_ops ieee80211_monitorif_ops
= {
830 .ndo_open
= ieee80211_open
,
831 .ndo_stop
= ieee80211_stop
,
832 .ndo_uninit
= ieee80211_teardown_sdata
,
833 .ndo_start_xmit
= ieee80211_monitor_start_xmit
,
834 .ndo_set_rx_mode
= ieee80211_set_multicast_list
,
835 .ndo_change_mtu
= ieee80211_change_mtu
,
836 .ndo_set_mac_address
= eth_mac_addr
,
837 .ndo_select_queue
= ieee80211_monitor_select_queue
,
840 static void ieee80211_if_setup(struct net_device
*dev
)
843 dev
->priv_flags
&= ~IFF_TX_SKB_SHARING
;
844 dev
->netdev_ops
= &ieee80211_dataif_ops
;
845 dev
->destructor
= free_netdev
;
848 static void ieee80211_iface_work(struct work_struct
*work
)
850 struct ieee80211_sub_if_data
*sdata
=
851 container_of(work
, struct ieee80211_sub_if_data
, work
);
852 struct ieee80211_local
*local
= sdata
->local
;
854 struct sta_info
*sta
;
855 struct ieee80211_ra_tid
*ra_tid
;
857 if (!ieee80211_sdata_running(sdata
))
864 * ieee80211_queue_work() should have picked up most cases,
865 * here we'll pick the rest.
867 if (WARN(local
->suspended
,
868 "interface work scheduled while going to suspend\n"))
871 /* first process frames */
872 while ((skb
= skb_dequeue(&sdata
->skb_queue
))) {
873 struct ieee80211_mgmt
*mgmt
= (void *)skb
->data
;
875 if (skb
->pkt_type
== IEEE80211_SDATA_QUEUE_AGG_START
) {
876 ra_tid
= (void *)&skb
->cb
;
877 ieee80211_start_tx_ba_cb(&sdata
->vif
, ra_tid
->ra
,
879 } else if (skb
->pkt_type
== IEEE80211_SDATA_QUEUE_AGG_STOP
) {
880 ra_tid
= (void *)&skb
->cb
;
881 ieee80211_stop_tx_ba_cb(&sdata
->vif
, ra_tid
->ra
,
883 } else if (ieee80211_is_action(mgmt
->frame_control
) &&
884 mgmt
->u
.action
.category
== WLAN_CATEGORY_BACK
) {
887 mutex_lock(&local
->sta_mtx
);
888 sta
= sta_info_get_bss(sdata
, mgmt
->sa
);
890 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
891 case WLAN_ACTION_ADDBA_REQ
:
892 ieee80211_process_addba_request(
893 local
, sta
, mgmt
, len
);
895 case WLAN_ACTION_ADDBA_RESP
:
896 ieee80211_process_addba_resp(local
, sta
,
899 case WLAN_ACTION_DELBA
:
900 ieee80211_process_delba(sdata
, sta
,
908 mutex_unlock(&local
->sta_mtx
);
909 } else if (ieee80211_is_data_qos(mgmt
->frame_control
)) {
910 struct ieee80211_hdr
*hdr
= (void *)mgmt
;
912 * So the frame isn't mgmt, but frame_control
913 * is at the right place anyway, of course, so
914 * the if statement is correct.
916 * Warn if we have other data frame types here,
917 * they must not get here.
919 WARN_ON(hdr
->frame_control
&
920 cpu_to_le16(IEEE80211_STYPE_NULLFUNC
));
921 WARN_ON(!(hdr
->seq_ctrl
&
922 cpu_to_le16(IEEE80211_SCTL_FRAG
)));
924 * This was a fragment of a frame, received while
925 * a block-ack session was active. That cannot be
926 * right, so terminate the session.
928 mutex_lock(&local
->sta_mtx
);
929 sta
= sta_info_get_bss(sdata
, mgmt
->sa
);
931 u16 tid
= *ieee80211_get_qos_ctl(hdr
) &
932 IEEE80211_QOS_CTL_TID_MASK
;
934 __ieee80211_stop_rx_ba_session(
935 sta
, tid
, WLAN_BACK_RECIPIENT
,
936 WLAN_REASON_QSTA_REQUIRE_SETUP
,
939 mutex_unlock(&local
->sta_mtx
);
940 } else switch (sdata
->vif
.type
) {
941 case NL80211_IFTYPE_STATION
:
942 ieee80211_sta_rx_queued_mgmt(sdata
, skb
);
944 case NL80211_IFTYPE_ADHOC
:
945 ieee80211_ibss_rx_queued_mgmt(sdata
, skb
);
947 case NL80211_IFTYPE_MESH_POINT
:
948 if (!ieee80211_vif_is_mesh(&sdata
->vif
))
950 ieee80211_mesh_rx_queued_mgmt(sdata
, skb
);
953 WARN(1, "frame for unexpected interface type");
960 /* then other type-dependent work */
961 switch (sdata
->vif
.type
) {
962 case NL80211_IFTYPE_STATION
:
963 ieee80211_sta_work(sdata
);
965 case NL80211_IFTYPE_ADHOC
:
966 ieee80211_ibss_work(sdata
);
968 case NL80211_IFTYPE_MESH_POINT
:
969 if (!ieee80211_vif_is_mesh(&sdata
->vif
))
971 ieee80211_mesh_work(sdata
);
980 * Helper function to initialise an interface to a specific type.
982 static void ieee80211_setup_sdata(struct ieee80211_sub_if_data
*sdata
,
983 enum nl80211_iftype type
)
985 /* clear type-dependent union */
986 memset(&sdata
->u
, 0, sizeof(sdata
->u
));
988 /* and set some type-dependent values */
989 sdata
->vif
.type
= type
;
990 sdata
->vif
.p2p
= false;
991 sdata
->dev
->netdev_ops
= &ieee80211_dataif_ops
;
992 sdata
->wdev
.iftype
= type
;
994 sdata
->control_port_protocol
= cpu_to_be16(ETH_P_PAE
);
995 sdata
->control_port_no_encrypt
= false;
997 sdata
->noack_map
= 0;
999 /* only monitor differs */
1000 sdata
->dev
->type
= ARPHRD_ETHER
;
1002 skb_queue_head_init(&sdata
->skb_queue
);
1003 INIT_WORK(&sdata
->work
, ieee80211_iface_work
);
1006 case NL80211_IFTYPE_P2P_GO
:
1007 type
= NL80211_IFTYPE_AP
;
1008 sdata
->vif
.type
= type
;
1009 sdata
->vif
.p2p
= true;
1011 case NL80211_IFTYPE_AP
:
1012 skb_queue_head_init(&sdata
->u
.ap
.ps_bc_buf
);
1013 INIT_LIST_HEAD(&sdata
->u
.ap
.vlans
);
1015 case NL80211_IFTYPE_P2P_CLIENT
:
1016 type
= NL80211_IFTYPE_STATION
;
1017 sdata
->vif
.type
= type
;
1018 sdata
->vif
.p2p
= true;
1020 case NL80211_IFTYPE_STATION
:
1021 ieee80211_sta_setup_sdata(sdata
);
1023 case NL80211_IFTYPE_ADHOC
:
1024 ieee80211_ibss_setup_sdata(sdata
);
1026 case NL80211_IFTYPE_MESH_POINT
:
1027 if (ieee80211_vif_is_mesh(&sdata
->vif
))
1028 ieee80211_mesh_init_sdata(sdata
);
1030 case NL80211_IFTYPE_MONITOR
:
1031 sdata
->dev
->type
= ARPHRD_IEEE80211_RADIOTAP
;
1032 sdata
->dev
->netdev_ops
= &ieee80211_monitorif_ops
;
1033 sdata
->u
.mntr_flags
= MONITOR_FLAG_CONTROL
|
1034 MONITOR_FLAG_OTHER_BSS
;
1036 case NL80211_IFTYPE_WDS
:
1037 case NL80211_IFTYPE_AP_VLAN
:
1039 case NL80211_IFTYPE_UNSPECIFIED
:
1040 case NUM_NL80211_IFTYPES
:
1045 ieee80211_debugfs_add_netdev(sdata
);
1048 static void ieee80211_clean_sdata(struct ieee80211_sub_if_data
*sdata
)
1050 switch (sdata
->vif
.type
) {
1051 case NL80211_IFTYPE_MESH_POINT
:
1052 mesh_path_flush_by_iface(sdata
);
1060 static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data
*sdata
,
1061 enum nl80211_iftype type
)
1063 struct ieee80211_local
*local
= sdata
->local
;
1065 enum nl80211_iftype internal_type
= type
;
1070 if (!local
->ops
->change_interface
)
1073 switch (sdata
->vif
.type
) {
1074 case NL80211_IFTYPE_AP
:
1075 case NL80211_IFTYPE_STATION
:
1076 case NL80211_IFTYPE_ADHOC
:
1078 * Could maybe also all others here?
1079 * Just not sure how that interacts
1080 * with the RX/config path e.g. for
1089 case NL80211_IFTYPE_AP
:
1090 case NL80211_IFTYPE_STATION
:
1091 case NL80211_IFTYPE_ADHOC
:
1093 * Could probably support everything
1094 * but WDS here (WDS do_open can fail
1095 * under memory pressure, which this
1096 * code isn't prepared to handle).
1099 case NL80211_IFTYPE_P2P_CLIENT
:
1101 internal_type
= NL80211_IFTYPE_STATION
;
1103 case NL80211_IFTYPE_P2P_GO
:
1105 internal_type
= NL80211_IFTYPE_AP
;
1111 ret
= ieee80211_check_concurrent_iface(sdata
, internal_type
);
1115 ieee80211_do_stop(sdata
, false);
1117 ieee80211_teardown_sdata(sdata
->dev
);
1119 ret
= drv_change_interface(local
, sdata
, internal_type
, p2p
);
1121 type
= sdata
->vif
.type
;
1124 * Ignore return value here, there's not much we can do since
1125 * the driver changed the interface type internally already.
1126 * The warnings will hopefully make driver authors fix it :-)
1128 ieee80211_check_queues(sdata
);
1130 ieee80211_setup_sdata(sdata
, type
);
1132 err
= ieee80211_do_open(sdata
->dev
, false);
1133 WARN(err
, "type change: do_open returned %d", err
);
1138 int ieee80211_if_change_type(struct ieee80211_sub_if_data
*sdata
,
1139 enum nl80211_iftype type
)
1145 if (type
== ieee80211_vif_type_p2p(&sdata
->vif
))
1148 /* Setting ad-hoc mode on non-IBSS channel is not supported. */
1149 if (sdata
->local
->oper_channel
->flags
& IEEE80211_CHAN_NO_IBSS
&&
1150 type
== NL80211_IFTYPE_ADHOC
)
1153 if (ieee80211_sdata_running(sdata
)) {
1154 ret
= ieee80211_runtime_change_iftype(sdata
, type
);
1158 /* Purge and reset type-dependent state. */
1159 ieee80211_teardown_sdata(sdata
->dev
);
1160 ieee80211_setup_sdata(sdata
, type
);
1163 /* reset some values that shouldn't be kept across type changes */
1164 sdata
->vif
.bss_conf
.basic_rates
=
1165 ieee80211_mandatory_rates(sdata
->local
,
1166 sdata
->local
->hw
.conf
.channel
->band
);
1167 sdata
->drop_unencrypted
= 0;
1168 if (type
== NL80211_IFTYPE_STATION
)
1169 sdata
->u
.mgd
.use_4addr
= false;
1174 static void ieee80211_assign_perm_addr(struct ieee80211_local
*local
,
1175 struct net_device
*dev
,
1176 enum nl80211_iftype type
)
1178 struct ieee80211_sub_if_data
*sdata
;
1179 u64 mask
, start
, addr
, val
, inc
;
1181 u8 tmp_addr
[ETH_ALEN
];
1184 /* default ... something at least */
1185 memcpy(dev
->perm_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1187 if (is_zero_ether_addr(local
->hw
.wiphy
->addr_mask
) &&
1188 local
->hw
.wiphy
->n_addresses
<= 1)
1192 mutex_lock(&local
->iflist_mtx
);
1195 case NL80211_IFTYPE_MONITOR
:
1196 /* doesn't matter */
1198 case NL80211_IFTYPE_WDS
:
1199 case NL80211_IFTYPE_AP_VLAN
:
1200 /* match up with an AP interface */
1201 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1202 if (sdata
->vif
.type
!= NL80211_IFTYPE_AP
)
1204 memcpy(dev
->perm_addr
, sdata
->vif
.addr
, ETH_ALEN
);
1207 /* keep default if no AP interface present */
1210 /* assign a new address if possible -- try n_addresses first */
1211 for (i
= 0; i
< local
->hw
.wiphy
->n_addresses
; i
++) {
1214 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1215 if (memcmp(local
->hw
.wiphy
->addresses
[i
].addr
,
1216 sdata
->vif
.addr
, ETH_ALEN
) == 0) {
1223 memcpy(dev
->perm_addr
,
1224 local
->hw
.wiphy
->addresses
[i
].addr
,
1230 /* try mask if available */
1231 if (is_zero_ether_addr(local
->hw
.wiphy
->addr_mask
))
1234 m
= local
->hw
.wiphy
->addr_mask
;
1235 mask
= ((u64
)m
[0] << 5*8) | ((u64
)m
[1] << 4*8) |
1236 ((u64
)m
[2] << 3*8) | ((u64
)m
[3] << 2*8) |
1237 ((u64
)m
[4] << 1*8) | ((u64
)m
[5] << 0*8);
1239 if (__ffs64(mask
) + hweight64(mask
) != fls64(mask
)) {
1240 /* not a contiguous mask ... not handled now! */
1241 printk(KERN_DEBUG
"not contiguous\n");
1245 m
= local
->hw
.wiphy
->perm_addr
;
1246 start
= ((u64
)m
[0] << 5*8) | ((u64
)m
[1] << 4*8) |
1247 ((u64
)m
[2] << 3*8) | ((u64
)m
[3] << 2*8) |
1248 ((u64
)m
[4] << 1*8) | ((u64
)m
[5] << 0*8);
1250 inc
= 1ULL<<__ffs64(mask
);
1251 val
= (start
& mask
);
1252 addr
= (start
& ~mask
) | (val
& mask
);
1256 tmp_addr
[5] = addr
>> 0*8;
1257 tmp_addr
[4] = addr
>> 1*8;
1258 tmp_addr
[3] = addr
>> 2*8;
1259 tmp_addr
[2] = addr
>> 3*8;
1260 tmp_addr
[1] = addr
>> 4*8;
1261 tmp_addr
[0] = addr
>> 5*8;
1265 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1266 if (memcmp(tmp_addr
, sdata
->vif
.addr
,
1274 memcpy(dev
->perm_addr
, tmp_addr
, ETH_ALEN
);
1277 addr
= (start
& ~mask
) | (val
& mask
);
1278 } while (addr
!= start
);
1283 mutex_unlock(&local
->iflist_mtx
);
1286 int ieee80211_if_add(struct ieee80211_local
*local
, const char *name
,
1287 struct net_device
**new_dev
, enum nl80211_iftype type
,
1288 struct vif_params
*params
)
1290 struct net_device
*ndev
;
1291 struct ieee80211_sub_if_data
*sdata
= NULL
;
1297 if (local
->hw
.queues
>= IEEE80211_NUM_ACS
)
1298 txqs
= IEEE80211_NUM_ACS
;
1300 ndev
= alloc_netdev_mqs(sizeof(*sdata
) + local
->hw
.vif_data_size
,
1301 name
, ieee80211_if_setup
, txqs
, 1);
1304 dev_net_set(ndev
, wiphy_net(local
->hw
.wiphy
));
1306 ndev
->needed_headroom
= local
->tx_headroom
+
1307 4*6 /* four MAC addresses */
1308 + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
1310 + 8 /* rfc1042/bridge tunnel */
1311 - ETH_HLEN
/* ethernet hard_header_len */
1312 + IEEE80211_ENCRYPT_HEADROOM
;
1313 ndev
->needed_tailroom
= IEEE80211_ENCRYPT_TAILROOM
;
1315 ret
= dev_alloc_name(ndev
, ndev
->name
);
1319 ieee80211_assign_perm_addr(local
, ndev
, type
);
1320 memcpy(ndev
->dev_addr
, ndev
->perm_addr
, ETH_ALEN
);
1321 SET_NETDEV_DEV(ndev
, wiphy_dev(local
->hw
.wiphy
));
1323 /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */
1324 sdata
= netdev_priv(ndev
);
1325 ndev
->ieee80211_ptr
= &sdata
->wdev
;
1326 memcpy(sdata
->vif
.addr
, ndev
->dev_addr
, ETH_ALEN
);
1327 memcpy(sdata
->name
, ndev
->name
, IFNAMSIZ
);
1329 /* initialise type-independent data */
1330 sdata
->wdev
.wiphy
= local
->hw
.wiphy
;
1331 sdata
->local
= local
;
1334 sdata
->arp_filter_state
= true;
1337 for (i
= 0; i
< IEEE80211_FRAGMENT_MAX
; i
++)
1338 skb_queue_head_init(&sdata
->fragments
[i
].skb_list
);
1340 INIT_LIST_HEAD(&sdata
->key_list
);
1342 for (i
= 0; i
< IEEE80211_NUM_BANDS
; i
++) {
1343 struct ieee80211_supported_band
*sband
;
1344 sband
= local
->hw
.wiphy
->bands
[i
];
1345 sdata
->rc_rateidx_mask
[i
] =
1346 sband
? (1 << sband
->n_bitrates
) - 1 : 0;
1348 memcpy(sdata
->rc_rateidx_mcs_mask
[i
],
1349 sband
->ht_cap
.mcs
.rx_mask
,
1350 sizeof(sdata
->rc_rateidx_mcs_mask
[i
]));
1352 memset(sdata
->rc_rateidx_mcs_mask
[i
], 0,
1353 sizeof(sdata
->rc_rateidx_mcs_mask
[i
]));
1356 ieee80211_set_default_queues(sdata
);
1358 /* setup type-dependent data */
1359 ieee80211_setup_sdata(sdata
, type
);
1362 ndev
->ieee80211_ptr
->use_4addr
= params
->use_4addr
;
1363 if (type
== NL80211_IFTYPE_STATION
)
1364 sdata
->u
.mgd
.use_4addr
= params
->use_4addr
;
1367 ret
= register_netdevice(ndev
);
1371 mutex_lock(&local
->iflist_mtx
);
1372 list_add_tail_rcu(&sdata
->list
, &local
->interfaces
);
1373 mutex_unlock(&local
->iflist_mtx
);
1385 void ieee80211_if_remove(struct ieee80211_sub_if_data
*sdata
)
1389 mutex_lock(&sdata
->local
->iflist_mtx
);
1390 list_del_rcu(&sdata
->list
);
1391 mutex_unlock(&sdata
->local
->iflist_mtx
);
1393 /* clean up type-dependent data */
1394 ieee80211_clean_sdata(sdata
);
1397 unregister_netdevice(sdata
->dev
);
1401 * Remove all interfaces, may only be called at hardware unregistration
1402 * time because it doesn't do RCU-safe list removals.
1404 void ieee80211_remove_interfaces(struct ieee80211_local
*local
)
1406 struct ieee80211_sub_if_data
*sdata
, *tmp
;
1407 LIST_HEAD(unreg_list
);
1411 mutex_lock(&local
->iflist_mtx
);
1412 list_for_each_entry_safe(sdata
, tmp
, &local
->interfaces
, list
) {
1413 list_del(&sdata
->list
);
1415 ieee80211_clean_sdata(sdata
);
1417 unregister_netdevice_queue(sdata
->dev
, &unreg_list
);
1419 mutex_unlock(&local
->iflist_mtx
);
1420 unregister_netdevice_many(&unreg_list
);
1421 list_del(&unreg_list
);
1424 static u32
ieee80211_idle_off(struct ieee80211_local
*local
,
1427 if (!(local
->hw
.conf
.flags
& IEEE80211_CONF_IDLE
))
1430 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
1431 wiphy_debug(local
->hw
.wiphy
, "device no longer idle - %s\n", reason
);
1434 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_IDLE
;
1435 return IEEE80211_CONF_CHANGE_IDLE
;
1438 static u32
ieee80211_idle_on(struct ieee80211_local
*local
)
1440 if (local
->hw
.conf
.flags
& IEEE80211_CONF_IDLE
)
1443 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
1444 wiphy_debug(local
->hw
.wiphy
, "device now idle\n");
1447 drv_flush(local
, false);
1449 local
->hw
.conf
.flags
|= IEEE80211_CONF_IDLE
;
1450 return IEEE80211_CONF_CHANGE_IDLE
;
1453 u32
__ieee80211_recalc_idle(struct ieee80211_local
*local
)
1455 struct ieee80211_sub_if_data
*sdata
;
1457 bool working
= false, scanning
= false, hw_roc
= false;
1458 struct ieee80211_work
*wk
;
1459 unsigned int led_trig_start
= 0, led_trig_stop
= 0;
1461 #ifdef CONFIG_PROVE_LOCKING
1462 WARN_ON(debug_locks
&& !lockdep_rtnl_is_held() &&
1463 !lockdep_is_held(&local
->iflist_mtx
));
1465 lockdep_assert_held(&local
->mtx
);
1467 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1468 if (!ieee80211_sdata_running(sdata
)) {
1469 sdata
->vif
.bss_conf
.idle
= true;
1473 sdata
->old_idle
= sdata
->vif
.bss_conf
.idle
;
1475 /* do not count disabled managed interfaces */
1476 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
&&
1477 !sdata
->u
.mgd
.associated
&&
1478 !sdata
->u
.mgd
.auth_data
&&
1479 !sdata
->u
.mgd
.assoc_data
) {
1480 sdata
->vif
.bss_conf
.idle
= true;
1483 /* do not count unused IBSS interfaces */
1484 if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
&&
1485 !sdata
->u
.ibss
.ssid_len
) {
1486 sdata
->vif
.bss_conf
.idle
= true;
1489 /* count everything else */
1490 sdata
->vif
.bss_conf
.idle
= false;
1494 list_for_each_entry(wk
, &local
->work_list
, list
) {
1496 wk
->sdata
->vif
.bss_conf
.idle
= false;
1499 if (local
->scan_sdata
&&
1500 !(local
->hw
.flags
& IEEE80211_HW_SCAN_WHILE_IDLE
)) {
1502 local
->scan_sdata
->vif
.bss_conf
.idle
= false;
1505 if (local
->hw_roc_channel
)
1508 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1509 if (sdata
->vif
.type
== NL80211_IFTYPE_MONITOR
||
1510 sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
)
1512 if (sdata
->old_idle
== sdata
->vif
.bss_conf
.idle
)
1514 if (!ieee80211_sdata_running(sdata
))
1516 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_IDLE
);
1519 if (working
|| scanning
|| hw_roc
)
1520 led_trig_start
|= IEEE80211_TPT_LEDTRIG_FL_WORK
;
1522 led_trig_stop
|= IEEE80211_TPT_LEDTRIG_FL_WORK
;
1525 led_trig_start
|= IEEE80211_TPT_LEDTRIG_FL_CONNECTED
;
1527 led_trig_stop
|= IEEE80211_TPT_LEDTRIG_FL_CONNECTED
;
1529 ieee80211_mod_tpt_led_trig(local
, led_trig_start
, led_trig_stop
);
1532 return ieee80211_idle_off(local
, "hw remain-on-channel");
1534 return ieee80211_idle_off(local
, "working");
1536 return ieee80211_idle_off(local
, "scanning");
1538 return ieee80211_idle_on(local
);
1540 return ieee80211_idle_off(local
, "in use");
1545 void ieee80211_recalc_idle(struct ieee80211_local
*local
)
1549 mutex_lock(&local
->iflist_mtx
);
1550 chg
= __ieee80211_recalc_idle(local
);
1551 mutex_unlock(&local
->iflist_mtx
);
1553 ieee80211_hw_config(local
, chg
);
1556 static int netdev_notify(struct notifier_block
*nb
,
1557 unsigned long state
,
1560 struct net_device
*dev
= ndev
;
1561 struct ieee80211_sub_if_data
*sdata
;
1563 if (state
!= NETDEV_CHANGENAME
)
1566 if (!dev
->ieee80211_ptr
|| !dev
->ieee80211_ptr
->wiphy
)
1569 if (dev
->ieee80211_ptr
->wiphy
->privid
!= mac80211_wiphy_privid
)
1572 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1574 memcpy(sdata
->name
, dev
->name
, IFNAMSIZ
);
1576 ieee80211_debugfs_rename_netdev(sdata
);
1580 static struct notifier_block mac80211_netdev_notifier
= {
1581 .notifier_call
= netdev_notify
,
1584 int ieee80211_iface_init(void)
1586 return register_netdevice_notifier(&mac80211_netdev_notifier
);
1589 void ieee80211_iface_exit(void)
1591 unregister_netdevice_notifier(&mac80211_netdev_notifier
);