1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright 2002-2005, Instant802 Networks, Inc.
6 * Copyright 2005-2006, Devicescape Software, Inc.
7 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
8 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
9 * Copyright 2013-2014 Intel Mobile Communications GmbH
10 * Copyright (c) 2016 Intel Deutschland GmbH
11 * Copyright (C) 2018-2020 Intel Corporation
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.
45 static void ieee80211_iface_work(struct work_struct
*work
);
47 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data
*sdata
)
49 struct ieee80211_chanctx_conf
*chanctx_conf
;
53 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
59 power
= ieee80211_chandef_max_power(&chanctx_conf
->def
);
62 if (sdata
->user_power_level
!= IEEE80211_UNSET_POWER_LEVEL
)
63 power
= min(power
, sdata
->user_power_level
);
65 if (sdata
->ap_power_level
!= IEEE80211_UNSET_POWER_LEVEL
)
66 power
= min(power
, sdata
->ap_power_level
);
68 if (power
!= sdata
->vif
.bss_conf
.txpower
) {
69 sdata
->vif
.bss_conf
.txpower
= power
;
70 ieee80211_hw_config(sdata
->local
, 0);
77 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data
*sdata
,
80 if (__ieee80211_recalc_txpower(sdata
) ||
81 (update_bss
&& ieee80211_sdata_running(sdata
)))
82 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_TXPOWER
);
85 static u32
__ieee80211_idle_off(struct ieee80211_local
*local
)
87 if (!(local
->hw
.conf
.flags
& IEEE80211_CONF_IDLE
))
90 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_IDLE
;
91 return IEEE80211_CONF_CHANGE_IDLE
;
94 static u32
__ieee80211_idle_on(struct ieee80211_local
*local
)
96 if (local
->hw
.conf
.flags
& IEEE80211_CONF_IDLE
)
99 ieee80211_flush_queues(local
, NULL
, false);
101 local
->hw
.conf
.flags
|= IEEE80211_CONF_IDLE
;
102 return IEEE80211_CONF_CHANGE_IDLE
;
105 static u32
__ieee80211_recalc_idle(struct ieee80211_local
*local
,
108 bool working
, scanning
, active
;
109 unsigned int led_trig_start
= 0, led_trig_stop
= 0;
111 lockdep_assert_held(&local
->mtx
);
113 active
= force_active
||
114 !list_empty(&local
->chanctx_list
) ||
117 working
= !local
->ops
->remain_on_channel
&&
118 !list_empty(&local
->roc_list
);
120 scanning
= test_bit(SCAN_SW_SCANNING
, &local
->scanning
) ||
121 test_bit(SCAN_ONCHANNEL_SCANNING
, &local
->scanning
);
123 if (working
|| scanning
)
124 led_trig_start
|= IEEE80211_TPT_LEDTRIG_FL_WORK
;
126 led_trig_stop
|= IEEE80211_TPT_LEDTRIG_FL_WORK
;
129 led_trig_start
|= IEEE80211_TPT_LEDTRIG_FL_CONNECTED
;
131 led_trig_stop
|= IEEE80211_TPT_LEDTRIG_FL_CONNECTED
;
133 ieee80211_mod_tpt_led_trig(local
, led_trig_start
, led_trig_stop
);
135 if (working
|| scanning
|| active
)
136 return __ieee80211_idle_off(local
);
137 return __ieee80211_idle_on(local
);
140 u32
ieee80211_idle_off(struct ieee80211_local
*local
)
142 return __ieee80211_recalc_idle(local
, true);
145 void ieee80211_recalc_idle(struct ieee80211_local
*local
)
147 u32 change
= __ieee80211_recalc_idle(local
, false);
149 ieee80211_hw_config(local
, change
);
152 static int ieee80211_verify_mac(struct ieee80211_sub_if_data
*sdata
, u8
*addr
,
155 struct ieee80211_local
*local
= sdata
->local
;
156 struct ieee80211_sub_if_data
*iter
;
161 if (is_zero_ether_addr(local
->hw
.wiphy
->addr_mask
))
165 new = ((u64
)m
[0] << 5*8) | ((u64
)m
[1] << 4*8) |
166 ((u64
)m
[2] << 3*8) | ((u64
)m
[3] << 2*8) |
167 ((u64
)m
[4] << 1*8) | ((u64
)m
[5] << 0*8);
169 m
= local
->hw
.wiphy
->addr_mask
;
170 mask
= ((u64
)m
[0] << 5*8) | ((u64
)m
[1] << 4*8) |
171 ((u64
)m
[2] << 3*8) | ((u64
)m
[3] << 2*8) |
172 ((u64
)m
[4] << 1*8) | ((u64
)m
[5] << 0*8);
177 mutex_lock(&local
->iflist_mtx
);
178 list_for_each_entry(iter
, &local
->interfaces
, list
) {
182 if (iter
->vif
.type
== NL80211_IFTYPE_MONITOR
&&
183 !(iter
->u
.mntr
.flags
& MONITOR_FLAG_ACTIVE
))
187 tmp
= ((u64
)m
[0] << 5*8) | ((u64
)m
[1] << 4*8) |
188 ((u64
)m
[2] << 3*8) | ((u64
)m
[3] << 2*8) |
189 ((u64
)m
[4] << 1*8) | ((u64
)m
[5] << 0*8);
191 if ((new & ~mask
) != (tmp
& ~mask
)) {
196 mutex_unlock(&local
->iflist_mtx
);
201 static int ieee80211_change_mac(struct net_device
*dev
, void *addr
)
203 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
204 struct sockaddr
*sa
= addr
;
205 bool check_dup
= true;
208 if (ieee80211_sdata_running(sdata
))
211 if (sdata
->vif
.type
== NL80211_IFTYPE_MONITOR
&&
212 !(sdata
->u
.mntr
.flags
& MONITOR_FLAG_ACTIVE
))
215 ret
= ieee80211_verify_mac(sdata
, sa
->sa_data
, check_dup
);
219 ret
= eth_mac_addr(dev
, sa
);
222 memcpy(sdata
->vif
.addr
, sa
->sa_data
, ETH_ALEN
);
227 static inline int identical_mac_addr_allowed(int type1
, int type2
)
229 return type1
== NL80211_IFTYPE_MONITOR
||
230 type2
== NL80211_IFTYPE_MONITOR
||
231 type1
== NL80211_IFTYPE_P2P_DEVICE
||
232 type2
== NL80211_IFTYPE_P2P_DEVICE
||
233 (type1
== NL80211_IFTYPE_AP
&& type2
== NL80211_IFTYPE_WDS
) ||
234 (type1
== NL80211_IFTYPE_WDS
&&
235 (type2
== NL80211_IFTYPE_WDS
||
236 type2
== NL80211_IFTYPE_AP
)) ||
237 (type1
== NL80211_IFTYPE_AP
&& type2
== NL80211_IFTYPE_AP_VLAN
) ||
238 (type1
== NL80211_IFTYPE_AP_VLAN
&&
239 (type2
== NL80211_IFTYPE_AP
||
240 type2
== NL80211_IFTYPE_AP_VLAN
));
243 static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data
*sdata
,
244 enum nl80211_iftype iftype
)
246 struct ieee80211_local
*local
= sdata
->local
;
247 struct ieee80211_sub_if_data
*nsdata
;
252 /* we hold the RTNL here so can safely walk the list */
253 list_for_each_entry(nsdata
, &local
->interfaces
, list
) {
254 if (nsdata
!= sdata
&& ieee80211_sdata_running(nsdata
)) {
256 * Only OCB and monitor mode may coexist
258 if ((sdata
->vif
.type
== NL80211_IFTYPE_OCB
&&
259 nsdata
->vif
.type
!= NL80211_IFTYPE_MONITOR
) ||
260 (sdata
->vif
.type
!= NL80211_IFTYPE_MONITOR
&&
261 nsdata
->vif
.type
== NL80211_IFTYPE_OCB
))
265 * Allow only a single IBSS interface to be up at any
266 * time. This is restricted because beacon distribution
267 * cannot work properly if both are in the same IBSS.
269 * To remove this restriction we'd have to disallow them
270 * from setting the same SSID on different IBSS interfaces
271 * belonging to the same hardware. Then, however, we're
272 * faced with having to adopt two different TSF timers...
274 if (iftype
== NL80211_IFTYPE_ADHOC
&&
275 nsdata
->vif
.type
== NL80211_IFTYPE_ADHOC
)
278 * will not add another interface while any channel
281 if (nsdata
->vif
.csa_active
)
285 * The remaining checks are only performed for interfaces
286 * with the same MAC address.
288 if (!ether_addr_equal(sdata
->vif
.addr
,
293 * check whether it may have the same address
295 if (!identical_mac_addr_allowed(iftype
,
300 * can only add VLANs to enabled APs
302 if (iftype
== NL80211_IFTYPE_AP_VLAN
&&
303 nsdata
->vif
.type
== NL80211_IFTYPE_AP
)
304 sdata
->bss
= &nsdata
->u
.ap
;
308 mutex_lock(&local
->chanctx_mtx
);
309 ret
= ieee80211_check_combinations(sdata
, NULL
, 0, 0);
310 mutex_unlock(&local
->chanctx_mtx
);
314 static int ieee80211_check_queues(struct ieee80211_sub_if_data
*sdata
,
315 enum nl80211_iftype iftype
)
317 int n_queues
= sdata
->local
->hw
.queues
;
320 if (iftype
== NL80211_IFTYPE_NAN
)
323 if (iftype
!= NL80211_IFTYPE_P2P_DEVICE
) {
324 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
325 if (WARN_ON_ONCE(sdata
->vif
.hw_queue
[i
] ==
326 IEEE80211_INVAL_HW_QUEUE
))
328 if (WARN_ON_ONCE(sdata
->vif
.hw_queue
[i
] >=
334 if ((iftype
!= NL80211_IFTYPE_AP
&&
335 iftype
!= NL80211_IFTYPE_P2P_GO
&&
336 iftype
!= NL80211_IFTYPE_MESH_POINT
) ||
337 !ieee80211_hw_check(&sdata
->local
->hw
, QUEUE_CONTROL
)) {
338 sdata
->vif
.cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
342 if (WARN_ON_ONCE(sdata
->vif
.cab_queue
== IEEE80211_INVAL_HW_QUEUE
))
345 if (WARN_ON_ONCE(sdata
->vif
.cab_queue
>= n_queues
))
351 static int ieee80211_open(struct net_device
*dev
)
353 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
356 /* fail early if user set an invalid address */
357 if (!is_valid_ether_addr(dev
->dev_addr
))
358 return -EADDRNOTAVAIL
;
360 err
= ieee80211_check_concurrent_iface(sdata
, sdata
->vif
.type
);
364 return ieee80211_do_open(&sdata
->wdev
, true);
367 static void ieee80211_do_stop(struct ieee80211_sub_if_data
*sdata
,
370 struct ieee80211_local
*local
= sdata
->local
;
372 struct sk_buff
*skb
, *tmp
;
373 u32 hw_reconf_flags
= 0;
376 struct cfg80211_chan_def chandef
;
378 struct cfg80211_nan_func
*func
;
380 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
382 cancel_scan
= rcu_access_pointer(local
->scan_sdata
) == sdata
;
384 ieee80211_scan_cancel(local
);
387 * Stop TX on this interface first.
390 netif_tx_stop_all_queues(sdata
->dev
);
392 ieee80211_roc_purge(local
, sdata
);
394 switch (sdata
->vif
.type
) {
395 case NL80211_IFTYPE_STATION
:
396 ieee80211_mgd_stop(sdata
);
398 case NL80211_IFTYPE_ADHOC
:
399 ieee80211_ibss_stop(sdata
);
401 case NL80211_IFTYPE_MONITOR
:
402 if (sdata
->u
.mntr
.flags
& MONITOR_FLAG_COOK_FRAMES
)
404 list_del_rcu(&sdata
->u
.mntr
.list
);
411 * Remove all stations associated with this interface.
413 * This must be done before calling ops->remove_interface()
414 * because otherwise we can later invoke ops->sta_notify()
415 * whenever the STAs are removed, and that invalidates driver
416 * assumptions about always getting a vif pointer that is valid
417 * (because if we remove a STA after ops->remove_interface()
418 * the driver will have removed the vif info already!)
420 * In WDS mode a station must exist here and be flushed, for
421 * AP_VLANs stations may exist since there's nothing else that
422 * would have removed them, but in other modes there shouldn't
425 flushed
= sta_info_flush(sdata
);
426 WARN_ON_ONCE(sdata
->vif
.type
!= NL80211_IFTYPE_AP_VLAN
&&
427 ((sdata
->vif
.type
!= NL80211_IFTYPE_WDS
&& flushed
> 0) ||
428 (sdata
->vif
.type
== NL80211_IFTYPE_WDS
&& flushed
!= 1)));
430 /* don't count this interface for allmulti while it is down */
431 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
432 atomic_dec(&local
->iff_allmultis
);
434 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
436 local
->fif_probe_req
--;
437 } else if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
) {
438 local
->fif_probe_req
--;
442 netif_addr_lock_bh(sdata
->dev
);
443 spin_lock_bh(&local
->filter_lock
);
444 __hw_addr_unsync(&local
->mc_list
, &sdata
->dev
->mc
,
445 sdata
->dev
->addr_len
);
446 spin_unlock_bh(&local
->filter_lock
);
447 netif_addr_unlock_bh(sdata
->dev
);
450 del_timer_sync(&local
->dynamic_ps_timer
);
451 cancel_work_sync(&local
->dynamic_ps_enable_work
);
453 cancel_work_sync(&sdata
->recalc_smps
);
455 mutex_lock(&local
->mtx
);
456 sdata
->vif
.csa_active
= false;
457 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
)
458 sdata
->u
.mgd
.csa_waiting_bcn
= false;
459 if (sdata
->csa_block_tx
) {
460 ieee80211_wake_vif_queues(local
, sdata
,
461 IEEE80211_QUEUE_STOP_REASON_CSA
);
462 sdata
->csa_block_tx
= false;
464 mutex_unlock(&local
->mtx
);
467 cancel_work_sync(&sdata
->csa_finalize_work
);
469 cancel_delayed_work_sync(&sdata
->dfs_cac_timer_work
);
471 if (sdata
->wdev
.cac_started
) {
472 chandef
= sdata
->vif
.bss_conf
.chandef
;
473 WARN_ON(local
->suspended
);
474 mutex_lock(&local
->mtx
);
475 ieee80211_vif_release_channel(sdata
);
476 mutex_unlock(&local
->mtx
);
477 cfg80211_cac_event(sdata
->dev
, &chandef
,
478 NL80211_RADAR_CAC_ABORTED
,
482 /* APs need special treatment */
483 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
484 struct ieee80211_sub_if_data
*vlan
, *tmpsdata
;
486 /* down all dependent devices, that is VLANs */
487 list_for_each_entry_safe(vlan
, tmpsdata
, &sdata
->u
.ap
.vlans
,
489 dev_close(vlan
->dev
);
490 WARN_ON(!list_empty(&sdata
->u
.ap
.vlans
));
491 } else if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
) {
492 /* remove all packets in parent bc_buf pointing to this dev */
493 ps
= &sdata
->bss
->ps
;
495 spin_lock_irqsave(&ps
->bc_buf
.lock
, flags
);
496 skb_queue_walk_safe(&ps
->bc_buf
, skb
, tmp
) {
497 if (skb
->dev
== sdata
->dev
) {
498 __skb_unlink(skb
, &ps
->bc_buf
);
499 local
->total_ps_buffered
--;
500 ieee80211_free_txskb(&local
->hw
, skb
);
503 spin_unlock_irqrestore(&ps
->bc_buf
.lock
, flags
);
509 switch (sdata
->vif
.type
) {
510 case NL80211_IFTYPE_AP_VLAN
:
511 mutex_lock(&local
->mtx
);
512 list_del(&sdata
->u
.vlan
.list
);
513 mutex_unlock(&local
->mtx
);
514 RCU_INIT_POINTER(sdata
->vif
.chanctx_conf
, NULL
);
515 /* see comment in the default case below */
516 ieee80211_free_keys(sdata
, true);
517 /* no need to tell driver */
519 case NL80211_IFTYPE_MONITOR
:
520 if (sdata
->u
.mntr
.flags
& MONITOR_FLAG_COOK_FRAMES
) {
521 local
->cooked_mntrs
--;
526 if (local
->monitors
== 0) {
527 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_MONITOR
;
528 hw_reconf_flags
|= IEEE80211_CONF_CHANGE_MONITOR
;
531 ieee80211_adjust_monitor_flags(sdata
, -1);
533 case NL80211_IFTYPE_NAN
:
534 /* clean all the functions */
535 spin_lock_bh(&sdata
->u
.nan
.func_lock
);
537 idr_for_each_entry(&sdata
->u
.nan
.function_inst_ids
, func
, i
) {
538 idr_remove(&sdata
->u
.nan
.function_inst_ids
, i
);
539 cfg80211_free_nan_func(func
);
541 idr_destroy(&sdata
->u
.nan
.function_inst_ids
);
543 spin_unlock_bh(&sdata
->u
.nan
.func_lock
);
545 case NL80211_IFTYPE_P2P_DEVICE
:
546 /* relies on synchronize_rcu() below */
547 RCU_INIT_POINTER(local
->p2p_sdata
, NULL
);
550 cancel_work_sync(&sdata
->work
);
552 * When we get here, the interface is marked down.
553 * Free the remaining keys, if there are any
554 * (which can happen in AP mode if userspace sets
555 * keys before the interface is operating, and maybe
558 * Force the key freeing to always synchronize_net()
559 * to wait for the RX path in case it is using this
560 * interface enqueuing frames at this very time on
563 ieee80211_free_keys(sdata
, true);
564 skb_queue_purge(&sdata
->skb_queue
);
567 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
568 for (i
= 0; i
< IEEE80211_MAX_QUEUES
; i
++) {
569 skb_queue_walk_safe(&local
->pending
[i
], skb
, tmp
) {
570 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
571 if (info
->control
.vif
== &sdata
->vif
) {
572 __skb_unlink(skb
, &local
->pending
[i
]);
573 ieee80211_free_txskb(&local
->hw
, skb
);
577 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
579 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
)
580 ieee80211_txq_remove_vlan(local
, sdata
);
584 if (local
->open_count
== 0)
585 ieee80211_clear_tx_pending(local
);
587 sdata
->vif
.bss_conf
.beacon_int
= 0;
590 * If the interface goes down while suspended, presumably because
591 * the device was unplugged and that happens before our resume,
592 * then the driver is already unconfigured and the remainder of
593 * this function isn't needed.
594 * XXX: what about WoWLAN? If the device has software state, e.g.
595 * memory allocated, it might expect teardown commands from
598 if (local
->suspended
) {
599 WARN_ON(local
->wowlan
);
600 WARN_ON(rtnl_dereference(local
->monitor_sdata
));
604 switch (sdata
->vif
.type
) {
605 case NL80211_IFTYPE_AP_VLAN
:
607 case NL80211_IFTYPE_MONITOR
:
608 if (local
->monitors
== 0)
609 ieee80211_del_virtual_monitor(local
);
611 mutex_lock(&local
->mtx
);
612 ieee80211_recalc_idle(local
);
613 mutex_unlock(&local
->mtx
);
615 if (!(sdata
->u
.mntr
.flags
& MONITOR_FLAG_ACTIVE
))
621 drv_remove_interface(local
, sdata
);
624 ieee80211_recalc_ps(local
);
627 flush_delayed_work(&local
->scan_work
);
629 if (local
->open_count
== 0) {
630 ieee80211_stop_device(local
);
632 /* no reconfiguring after stop! */
636 /* do after stop to avoid reconfiguring when we stop anyway */
637 ieee80211_configure_filter(local
);
638 ieee80211_hw_config(local
, hw_reconf_flags
);
640 if (local
->monitors
== local
->open_count
)
641 ieee80211_add_virtual_monitor(local
);
644 static int ieee80211_stop(struct net_device
*dev
)
646 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
648 ieee80211_do_stop(sdata
, true);
653 static void ieee80211_set_multicast_list(struct net_device
*dev
)
655 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
656 struct ieee80211_local
*local
= sdata
->local
;
657 int allmulti
, sdata_allmulti
;
659 allmulti
= !!(dev
->flags
& IFF_ALLMULTI
);
660 sdata_allmulti
= !!(sdata
->flags
& IEEE80211_SDATA_ALLMULTI
);
662 if (allmulti
!= sdata_allmulti
) {
663 if (dev
->flags
& IFF_ALLMULTI
)
664 atomic_inc(&local
->iff_allmultis
);
666 atomic_dec(&local
->iff_allmultis
);
667 sdata
->flags
^= IEEE80211_SDATA_ALLMULTI
;
670 spin_lock_bh(&local
->filter_lock
);
671 __hw_addr_sync(&local
->mc_list
, &dev
->mc
, dev
->addr_len
);
672 spin_unlock_bh(&local
->filter_lock
);
673 ieee80211_queue_work(&local
->hw
, &local
->reconfig_filter
);
677 * Called when the netdev is removed or, by the code below, before
678 * the interface type changes.
680 static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data
*sdata
)
684 /* free extra data */
685 ieee80211_free_keys(sdata
, false);
687 ieee80211_debugfs_remove_netdev(sdata
);
689 for (i
= 0; i
< IEEE80211_FRAGMENT_MAX
; i
++)
690 __skb_queue_purge(&sdata
->fragments
[i
].skb_list
);
691 sdata
->fragment_next
= 0;
693 if (ieee80211_vif_is_mesh(&sdata
->vif
))
694 ieee80211_mesh_teardown_sdata(sdata
);
697 static void ieee80211_uninit(struct net_device
*dev
)
699 ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev
));
702 static u16
ieee80211_netdev_select_queue(struct net_device
*dev
,
704 struct net_device
*sb_dev
)
706 return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev
), skb
);
710 ieee80211_get_stats64(struct net_device
*dev
, struct rtnl_link_stats64
*stats
)
712 dev_fetch_sw_netstats(stats
, dev
->tstats
);
715 static const struct net_device_ops ieee80211_dataif_ops
= {
716 .ndo_open
= ieee80211_open
,
717 .ndo_stop
= ieee80211_stop
,
718 .ndo_uninit
= ieee80211_uninit
,
719 .ndo_start_xmit
= ieee80211_subif_start_xmit
,
720 .ndo_set_rx_mode
= ieee80211_set_multicast_list
,
721 .ndo_set_mac_address
= ieee80211_change_mac
,
722 .ndo_select_queue
= ieee80211_netdev_select_queue
,
723 .ndo_get_stats64
= ieee80211_get_stats64
,
726 static u16
ieee80211_monitor_select_queue(struct net_device
*dev
,
728 struct net_device
*sb_dev
)
730 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
731 struct ieee80211_local
*local
= sdata
->local
;
732 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
733 struct ieee80211_hdr
*hdr
;
736 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
739 /* reset flags and info before parsing radiotap header */
740 memset(info
, 0, sizeof(*info
));
742 if (!ieee80211_parse_tx_radiotap(skb
, dev
))
743 return 0; /* doesn't matter, frame will be dropped */
745 len_rthdr
= ieee80211_get_radiotap_len(skb
->data
);
746 hdr
= (struct ieee80211_hdr
*)(skb
->data
+ len_rthdr
);
747 if (skb
->len
< len_rthdr
+ 2 ||
748 skb
->len
< len_rthdr
+ ieee80211_hdrlen(hdr
->frame_control
))
749 return 0; /* doesn't matter, frame will be dropped */
751 return ieee80211_select_queue_80211(sdata
, skb
, hdr
);
754 static const struct net_device_ops ieee80211_monitorif_ops
= {
755 .ndo_open
= ieee80211_open
,
756 .ndo_stop
= ieee80211_stop
,
757 .ndo_uninit
= ieee80211_uninit
,
758 .ndo_start_xmit
= ieee80211_monitor_start_xmit
,
759 .ndo_set_rx_mode
= ieee80211_set_multicast_list
,
760 .ndo_set_mac_address
= ieee80211_change_mac
,
761 .ndo_select_queue
= ieee80211_monitor_select_queue
,
762 .ndo_get_stats64
= ieee80211_get_stats64
,
765 static const struct net_device_ops ieee80211_dataif_8023_ops
= {
766 .ndo_open
= ieee80211_open
,
767 .ndo_stop
= ieee80211_stop
,
768 .ndo_uninit
= ieee80211_uninit
,
769 .ndo_start_xmit
= ieee80211_subif_start_xmit_8023
,
770 .ndo_set_rx_mode
= ieee80211_set_multicast_list
,
771 .ndo_set_mac_address
= ieee80211_change_mac
,
772 .ndo_select_queue
= ieee80211_netdev_select_queue
,
773 .ndo_get_stats64
= ieee80211_get_stats64
,
776 static bool ieee80211_iftype_supports_encap_offload(enum nl80211_iftype iftype
)
779 /* P2P GO and client are mapped to AP/STATION types */
780 case NL80211_IFTYPE_AP
:
781 case NL80211_IFTYPE_STATION
:
788 static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data
*sdata
)
790 struct ieee80211_local
*local
= sdata
->local
;
793 flags
= sdata
->vif
.offload_flags
;
795 if (ieee80211_hw_check(&local
->hw
, SUPPORTS_TX_ENCAP_OFFLOAD
) &&
796 ieee80211_iftype_supports_encap_offload(sdata
->vif
.type
)) {
797 flags
|= IEEE80211_OFFLOAD_ENCAP_ENABLED
;
799 if (!ieee80211_hw_check(&local
->hw
, SUPPORTS_TX_FRAG
) &&
800 local
->hw
.wiphy
->frag_threshold
!= (u32
)-1)
801 flags
&= ~IEEE80211_OFFLOAD_ENCAP_ENABLED
;
804 flags
&= ~IEEE80211_OFFLOAD_ENCAP_ENABLED
;
806 flags
&= ~IEEE80211_OFFLOAD_ENCAP_ENABLED
;
809 if (sdata
->vif
.offload_flags
== flags
)
812 sdata
->vif
.offload_flags
= flags
;
816 static void ieee80211_set_vif_encap_ops(struct ieee80211_sub_if_data
*sdata
)
818 struct ieee80211_local
*local
= sdata
->local
;
819 struct ieee80211_sub_if_data
*bss
= sdata
;
822 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
) {
826 bss
= container_of(sdata
->bss
, struct ieee80211_sub_if_data
, u
.ap
);
829 if (!ieee80211_hw_check(&local
->hw
, SUPPORTS_TX_ENCAP_OFFLOAD
) ||
830 !ieee80211_iftype_supports_encap_offload(bss
->vif
.type
))
833 enabled
= bss
->vif
.offload_flags
& IEEE80211_OFFLOAD_ENCAP_ENABLED
;
834 if (sdata
->wdev
.use_4addr
&&
835 !(bss
->vif
.offload_flags
& IEEE80211_OFFLOAD_ENCAP_4ADDR
))
838 sdata
->dev
->netdev_ops
= enabled
? &ieee80211_dataif_8023_ops
:
839 &ieee80211_dataif_ops
;
842 static void ieee80211_recalc_sdata_offload(struct ieee80211_sub_if_data
*sdata
)
844 struct ieee80211_local
*local
= sdata
->local
;
845 struct ieee80211_sub_if_data
*vsdata
;
847 if (ieee80211_set_sdata_offload_flags(sdata
)) {
848 drv_update_vif_offload(local
, sdata
);
849 ieee80211_set_vif_encap_ops(sdata
);
852 list_for_each_entry(vsdata
, &local
->interfaces
, list
) {
853 if (vsdata
->vif
.type
!= NL80211_IFTYPE_AP_VLAN
||
854 vsdata
->bss
!= &sdata
->u
.ap
)
857 ieee80211_set_vif_encap_ops(vsdata
);
861 void ieee80211_recalc_offload(struct ieee80211_local
*local
)
863 struct ieee80211_sub_if_data
*sdata
;
865 if (!ieee80211_hw_check(&local
->hw
, SUPPORTS_TX_ENCAP_OFFLOAD
))
868 mutex_lock(&local
->iflist_mtx
);
870 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
871 if (!ieee80211_sdata_running(sdata
))
874 ieee80211_recalc_sdata_offload(sdata
);
877 mutex_unlock(&local
->iflist_mtx
);
880 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data
*sdata
,
883 struct ieee80211_local
*local
= sdata
->local
;
884 u32 flags
= sdata
->u
.mntr
.flags
;
886 #define ADJUST(_f, _s) do { \
887 if (flags & MONITOR_FLAG_##_f) \
888 local->fif_##_s += offset; \
891 ADJUST(FCSFAIL
, fcsfail
);
892 ADJUST(PLCPFAIL
, plcpfail
);
893 ADJUST(CONTROL
, control
);
894 ADJUST(CONTROL
, pspoll
);
895 ADJUST(OTHER_BSS
, other_bss
);
900 static void ieee80211_set_default_queues(struct ieee80211_sub_if_data
*sdata
)
902 struct ieee80211_local
*local
= sdata
->local
;
905 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
906 if (ieee80211_hw_check(&local
->hw
, QUEUE_CONTROL
))
907 sdata
->vif
.hw_queue
[i
] = IEEE80211_INVAL_HW_QUEUE
;
908 else if (local
->hw
.queues
>= IEEE80211_NUM_ACS
)
909 sdata
->vif
.hw_queue
[i
] = i
;
911 sdata
->vif
.hw_queue
[i
] = 0;
913 sdata
->vif
.cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
916 int ieee80211_add_virtual_monitor(struct ieee80211_local
*local
)
918 struct ieee80211_sub_if_data
*sdata
;
921 if (!ieee80211_hw_check(&local
->hw
, WANT_MONITOR_VIF
))
926 if (local
->monitor_sdata
)
929 sdata
= kzalloc(sizeof(*sdata
) + local
->hw
.vif_data_size
, GFP_KERNEL
);
934 sdata
->local
= local
;
935 sdata
->vif
.type
= NL80211_IFTYPE_MONITOR
;
936 snprintf(sdata
->name
, IFNAMSIZ
, "%s-monitor",
937 wiphy_name(local
->hw
.wiphy
));
938 sdata
->wdev
.iftype
= NL80211_IFTYPE_MONITOR
;
940 sdata
->encrypt_headroom
= IEEE80211_ENCRYPT_HEADROOM
;
942 ieee80211_set_default_queues(sdata
);
944 ret
= drv_add_interface(local
, sdata
);
946 /* ok .. stupid driver, it asked for this! */
951 ret
= ieee80211_check_queues(sdata
, NL80211_IFTYPE_MONITOR
);
957 mutex_lock(&local
->iflist_mtx
);
958 rcu_assign_pointer(local
->monitor_sdata
, sdata
);
959 mutex_unlock(&local
->iflist_mtx
);
961 mutex_lock(&local
->mtx
);
962 ret
= ieee80211_vif_use_channel(sdata
, &local
->monitor_chandef
,
963 IEEE80211_CHANCTX_EXCLUSIVE
);
964 mutex_unlock(&local
->mtx
);
966 mutex_lock(&local
->iflist_mtx
);
967 RCU_INIT_POINTER(local
->monitor_sdata
, NULL
);
968 mutex_unlock(&local
->iflist_mtx
);
970 drv_remove_interface(local
, sdata
);
975 skb_queue_head_init(&sdata
->skb_queue
);
976 INIT_WORK(&sdata
->work
, ieee80211_iface_work
);
981 void ieee80211_del_virtual_monitor(struct ieee80211_local
*local
)
983 struct ieee80211_sub_if_data
*sdata
;
985 if (!ieee80211_hw_check(&local
->hw
, WANT_MONITOR_VIF
))
990 mutex_lock(&local
->iflist_mtx
);
992 sdata
= rcu_dereference_protected(local
->monitor_sdata
,
993 lockdep_is_held(&local
->iflist_mtx
));
995 mutex_unlock(&local
->iflist_mtx
);
999 RCU_INIT_POINTER(local
->monitor_sdata
, NULL
);
1000 mutex_unlock(&local
->iflist_mtx
);
1004 mutex_lock(&local
->mtx
);
1005 ieee80211_vif_release_channel(sdata
);
1006 mutex_unlock(&local
->mtx
);
1008 drv_remove_interface(local
, sdata
);
1014 * NOTE: Be very careful when changing this function, it must NOT return
1015 * an error on interface type changes that have been pre-checked, so most
1016 * checks should be in ieee80211_check_concurrent_iface.
1018 int ieee80211_do_open(struct wireless_dev
*wdev
, bool coming_up
)
1020 struct ieee80211_sub_if_data
*sdata
= IEEE80211_WDEV_TO_SUB_IF(wdev
);
1021 struct net_device
*dev
= wdev
->netdev
;
1022 struct ieee80211_local
*local
= sdata
->local
;
1023 struct sta_info
*sta
;
1026 u32 hw_reconf_flags
= 0;
1028 switch (sdata
->vif
.type
) {
1029 case NL80211_IFTYPE_WDS
:
1030 if (!is_valid_ether_addr(sdata
->u
.wds
.remote_addr
))
1033 case NL80211_IFTYPE_AP_VLAN
: {
1034 struct ieee80211_sub_if_data
*master
;
1039 mutex_lock(&local
->mtx
);
1040 list_add(&sdata
->u
.vlan
.list
, &sdata
->bss
->vlans
);
1041 mutex_unlock(&local
->mtx
);
1043 master
= container_of(sdata
->bss
,
1044 struct ieee80211_sub_if_data
, u
.ap
);
1045 sdata
->control_port_protocol
=
1046 master
->control_port_protocol
;
1047 sdata
->control_port_no_encrypt
=
1048 master
->control_port_no_encrypt
;
1049 sdata
->control_port_over_nl80211
=
1050 master
->control_port_over_nl80211
;
1051 sdata
->control_port_no_preauth
=
1052 master
->control_port_no_preauth
;
1053 sdata
->vif
.cab_queue
= master
->vif
.cab_queue
;
1054 memcpy(sdata
->vif
.hw_queue
, master
->vif
.hw_queue
,
1055 sizeof(sdata
->vif
.hw_queue
));
1056 sdata
->vif
.bss_conf
.chandef
= master
->vif
.bss_conf
.chandef
;
1058 mutex_lock(&local
->key_mtx
);
1059 sdata
->crypto_tx_tailroom_needed_cnt
+=
1060 master
->crypto_tx_tailroom_needed_cnt
;
1061 mutex_unlock(&local
->key_mtx
);
1065 case NL80211_IFTYPE_AP
:
1066 sdata
->bss
= &sdata
->u
.ap
;
1068 case NL80211_IFTYPE_MESH_POINT
:
1069 case NL80211_IFTYPE_STATION
:
1070 case NL80211_IFTYPE_MONITOR
:
1071 case NL80211_IFTYPE_ADHOC
:
1072 case NL80211_IFTYPE_P2P_DEVICE
:
1073 case NL80211_IFTYPE_OCB
:
1074 case NL80211_IFTYPE_NAN
:
1075 /* no special treatment */
1077 case NL80211_IFTYPE_UNSPECIFIED
:
1078 case NUM_NL80211_IFTYPES
:
1079 case NL80211_IFTYPE_P2P_CLIENT
:
1080 case NL80211_IFTYPE_P2P_GO
:
1086 if (local
->open_count
== 0) {
1087 res
= drv_start(local
);
1090 /* we're brought up, everything changes */
1091 hw_reconf_flags
= ~0;
1092 ieee80211_led_radio(local
, true);
1093 ieee80211_mod_tpt_led_trig(local
,
1094 IEEE80211_TPT_LEDTRIG_FL_RADIO
, 0);
1098 * Copy the hopefully now-present MAC address to
1099 * this interface, if it has the special null one.
1101 if (dev
&& is_zero_ether_addr(dev
->dev_addr
)) {
1102 memcpy(dev
->dev_addr
,
1103 local
->hw
.wiphy
->perm_addr
,
1105 memcpy(dev
->perm_addr
, dev
->dev_addr
, ETH_ALEN
);
1107 if (!is_valid_ether_addr(dev
->dev_addr
)) {
1108 res
= -EADDRNOTAVAIL
;
1113 switch (sdata
->vif
.type
) {
1114 case NL80211_IFTYPE_AP_VLAN
:
1115 /* no need to tell driver, but set carrier and chanctx */
1116 if (rtnl_dereference(sdata
->bss
->beacon
)) {
1117 ieee80211_vif_vlan_copy_chanctx(sdata
);
1118 netif_carrier_on(dev
);
1119 ieee80211_set_vif_encap_ops(sdata
);
1121 netif_carrier_off(dev
);
1124 case NL80211_IFTYPE_MONITOR
:
1125 if (sdata
->u
.mntr
.flags
& MONITOR_FLAG_COOK_FRAMES
) {
1126 local
->cooked_mntrs
++;
1130 if (sdata
->u
.mntr
.flags
& MONITOR_FLAG_ACTIVE
) {
1131 res
= drv_add_interface(local
, sdata
);
1134 } else if (local
->monitors
== 0 && local
->open_count
== 0) {
1135 res
= ieee80211_add_virtual_monitor(local
);
1140 /* must be before the call to ieee80211_configure_filter */
1142 if (local
->monitors
== 1) {
1143 local
->hw
.conf
.flags
|= IEEE80211_CONF_MONITOR
;
1144 hw_reconf_flags
|= IEEE80211_CONF_CHANGE_MONITOR
;
1147 ieee80211_adjust_monitor_flags(sdata
, 1);
1148 ieee80211_configure_filter(local
);
1149 ieee80211_recalc_offload(local
);
1150 mutex_lock(&local
->mtx
);
1151 ieee80211_recalc_idle(local
);
1152 mutex_unlock(&local
->mtx
);
1154 netif_carrier_on(dev
);
1158 ieee80211_del_virtual_monitor(local
);
1159 ieee80211_set_sdata_offload_flags(sdata
);
1161 res
= drv_add_interface(local
, sdata
);
1165 ieee80211_set_vif_encap_ops(sdata
);
1166 res
= ieee80211_check_queues(sdata
,
1167 ieee80211_vif_type_p2p(&sdata
->vif
));
1169 goto err_del_interface
;
1172 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
1173 local
->fif_pspoll
++;
1174 local
->fif_probe_req
++;
1176 ieee80211_configure_filter(local
);
1177 } else if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
) {
1178 local
->fif_probe_req
++;
1181 if (sdata
->vif
.probe_req_reg
)
1182 drv_config_iface_filter(local
, sdata
,
1186 if (sdata
->vif
.type
!= NL80211_IFTYPE_P2P_DEVICE
&&
1187 sdata
->vif
.type
!= NL80211_IFTYPE_NAN
)
1188 changed
|= ieee80211_reset_erp_info(sdata
);
1189 ieee80211_bss_info_change_notify(sdata
, changed
);
1191 switch (sdata
->vif
.type
) {
1192 case NL80211_IFTYPE_STATION
:
1193 case NL80211_IFTYPE_ADHOC
:
1194 case NL80211_IFTYPE_AP
:
1195 case NL80211_IFTYPE_MESH_POINT
:
1196 case NL80211_IFTYPE_OCB
:
1197 netif_carrier_off(dev
);
1199 case NL80211_IFTYPE_WDS
:
1200 case NL80211_IFTYPE_P2P_DEVICE
:
1201 case NL80211_IFTYPE_NAN
:
1209 * Set default queue parameters so drivers don't
1210 * need to initialise the hardware if the hardware
1211 * doesn't start up with sane defaults.
1212 * Enable QoS for anything but station interfaces.
1214 ieee80211_set_wmm_default(sdata
, true,
1215 sdata
->vif
.type
!= NL80211_IFTYPE_STATION
);
1218 set_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
1220 switch (sdata
->vif
.type
) {
1221 case NL80211_IFTYPE_WDS
:
1222 /* Create STA entry for the WDS peer */
1223 sta
= sta_info_alloc(sdata
, sdata
->u
.wds
.remote_addr
,
1227 goto err_del_interface
;
1230 sta_info_pre_move_state(sta
, IEEE80211_STA_AUTH
);
1231 sta_info_pre_move_state(sta
, IEEE80211_STA_ASSOC
);
1232 sta_info_pre_move_state(sta
, IEEE80211_STA_AUTHORIZED
);
1234 res
= sta_info_insert(sta
);
1236 /* STA has been freed */
1237 goto err_del_interface
;
1240 rate_control_rate_init(sta
);
1241 netif_carrier_on(dev
);
1243 case NL80211_IFTYPE_P2P_DEVICE
:
1244 rcu_assign_pointer(local
->p2p_sdata
, sdata
);
1246 case NL80211_IFTYPE_MONITOR
:
1247 if (sdata
->u
.mntr
.flags
& MONITOR_FLAG_COOK_FRAMES
)
1249 list_add_tail_rcu(&sdata
->u
.mntr
.list
, &local
->mon_list
);
1256 * set_multicast_list will be invoked by the networking core
1257 * which will check whether any increments here were done in
1258 * error and sync them down to the hardware as filter flags.
1260 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
1261 atomic_inc(&local
->iff_allmultis
);
1264 local
->open_count
++;
1266 if (hw_reconf_flags
)
1267 ieee80211_hw_config(local
, hw_reconf_flags
);
1269 ieee80211_recalc_ps(local
);
1271 if (sdata
->vif
.type
== NL80211_IFTYPE_MONITOR
||
1272 sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
||
1273 local
->ops
->wake_tx_queue
) {
1274 /* XXX: for AP_VLAN, actually track AP queues */
1276 netif_tx_start_all_queues(dev
);
1278 unsigned long flags
;
1279 int n_acs
= IEEE80211_NUM_ACS
;
1282 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
1285 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
1286 if (sdata
->vif
.cab_queue
== IEEE80211_INVAL_HW_QUEUE
||
1287 (local
->queue_stop_reasons
[sdata
->vif
.cab_queue
] == 0 &&
1288 skb_queue_empty(&local
->pending
[sdata
->vif
.cab_queue
]))) {
1289 for (ac
= 0; ac
< n_acs
; ac
++) {
1290 int ac_queue
= sdata
->vif
.hw_queue
[ac
];
1292 if (local
->queue_stop_reasons
[ac_queue
] == 0 &&
1293 skb_queue_empty(&local
->pending
[ac_queue
]))
1294 netif_start_subqueue(dev
, ac
);
1297 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
1302 drv_remove_interface(local
, sdata
);
1304 if (!local
->open_count
)
1308 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
) {
1309 mutex_lock(&local
->mtx
);
1310 list_del(&sdata
->u
.vlan
.list
);
1311 mutex_unlock(&local
->mtx
);
1313 /* might already be clear but that doesn't matter */
1314 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
1318 static void ieee80211_if_free(struct net_device
*dev
)
1320 free_percpu(dev
->tstats
);
1323 static void ieee80211_if_setup(struct net_device
*dev
)
1326 dev
->priv_flags
&= ~IFF_TX_SKB_SHARING
;
1327 dev
->netdev_ops
= &ieee80211_dataif_ops
;
1328 dev
->needs_free_netdev
= true;
1329 dev
->priv_destructor
= ieee80211_if_free
;
1332 static void ieee80211_if_setup_no_queue(struct net_device
*dev
)
1334 ieee80211_if_setup(dev
);
1335 dev
->priv_flags
|= IFF_NO_QUEUE
;
1338 static void ieee80211_iface_work(struct work_struct
*work
)
1340 struct ieee80211_sub_if_data
*sdata
=
1341 container_of(work
, struct ieee80211_sub_if_data
, work
);
1342 struct ieee80211_local
*local
= sdata
->local
;
1343 struct sk_buff
*skb
;
1344 struct sta_info
*sta
;
1346 if (!ieee80211_sdata_running(sdata
))
1349 if (test_bit(SCAN_SW_SCANNING
, &local
->scanning
))
1352 if (!ieee80211_can_run_worker(local
))
1355 /* first process frames */
1356 while ((skb
= skb_dequeue(&sdata
->skb_queue
))) {
1357 struct ieee80211_mgmt
*mgmt
= (void *)skb
->data
;
1359 if (ieee80211_is_action(mgmt
->frame_control
) &&
1360 mgmt
->u
.action
.category
== WLAN_CATEGORY_BACK
) {
1363 mutex_lock(&local
->sta_mtx
);
1364 sta
= sta_info_get_bss(sdata
, mgmt
->sa
);
1366 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
1367 case WLAN_ACTION_ADDBA_REQ
:
1368 ieee80211_process_addba_request(
1369 local
, sta
, mgmt
, len
);
1371 case WLAN_ACTION_ADDBA_RESP
:
1372 ieee80211_process_addba_resp(local
, sta
,
1375 case WLAN_ACTION_DELBA
:
1376 ieee80211_process_delba(sdata
, sta
,
1384 mutex_unlock(&local
->sta_mtx
);
1385 } else if (ieee80211_is_action(mgmt
->frame_control
) &&
1386 mgmt
->u
.action
.category
== WLAN_CATEGORY_VHT
) {
1387 switch (mgmt
->u
.action
.u
.vht_group_notif
.action_code
) {
1388 case WLAN_VHT_ACTION_OPMODE_NOTIF
: {
1389 struct ieee80211_rx_status
*status
;
1390 enum nl80211_band band
;
1393 status
= IEEE80211_SKB_RXCB(skb
);
1394 band
= status
->band
;
1395 opmode
= mgmt
->u
.action
.u
.vht_opmode_notif
.operating_mode
;
1397 mutex_lock(&local
->sta_mtx
);
1398 sta
= sta_info_get_bss(sdata
, mgmt
->sa
);
1401 ieee80211_vht_handle_opmode(sdata
, sta
,
1405 mutex_unlock(&local
->sta_mtx
);
1408 case WLAN_VHT_ACTION_GROUPID_MGMT
:
1409 ieee80211_process_mu_groups(sdata
, mgmt
);
1415 } else if (ieee80211_is_ext(mgmt
->frame_control
)) {
1416 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
)
1417 ieee80211_sta_rx_queued_ext(sdata
, skb
);
1420 } else if (ieee80211_is_data_qos(mgmt
->frame_control
)) {
1421 struct ieee80211_hdr
*hdr
= (void *)mgmt
;
1423 * So the frame isn't mgmt, but frame_control
1424 * is at the right place anyway, of course, so
1425 * the if statement is correct.
1427 * Warn if we have other data frame types here,
1428 * they must not get here.
1430 WARN_ON(hdr
->frame_control
&
1431 cpu_to_le16(IEEE80211_STYPE_NULLFUNC
));
1432 WARN_ON(!(hdr
->seq_ctrl
&
1433 cpu_to_le16(IEEE80211_SCTL_FRAG
)));
1435 * This was a fragment of a frame, received while
1436 * a block-ack session was active. That cannot be
1437 * right, so terminate the session.
1439 mutex_lock(&local
->sta_mtx
);
1440 sta
= sta_info_get_bss(sdata
, mgmt
->sa
);
1442 u16 tid
= ieee80211_get_tid(hdr
);
1444 __ieee80211_stop_rx_ba_session(
1445 sta
, tid
, WLAN_BACK_RECIPIENT
,
1446 WLAN_REASON_QSTA_REQUIRE_SETUP
,
1449 mutex_unlock(&local
->sta_mtx
);
1450 } else switch (sdata
->vif
.type
) {
1451 case NL80211_IFTYPE_STATION
:
1452 ieee80211_sta_rx_queued_mgmt(sdata
, skb
);
1454 case NL80211_IFTYPE_ADHOC
:
1455 ieee80211_ibss_rx_queued_mgmt(sdata
, skb
);
1457 case NL80211_IFTYPE_MESH_POINT
:
1458 if (!ieee80211_vif_is_mesh(&sdata
->vif
))
1460 ieee80211_mesh_rx_queued_mgmt(sdata
, skb
);
1463 WARN(1, "frame for unexpected interface type");
1470 /* then other type-dependent work */
1471 switch (sdata
->vif
.type
) {
1472 case NL80211_IFTYPE_STATION
:
1473 ieee80211_sta_work(sdata
);
1475 case NL80211_IFTYPE_ADHOC
:
1476 ieee80211_ibss_work(sdata
);
1478 case NL80211_IFTYPE_MESH_POINT
:
1479 if (!ieee80211_vif_is_mesh(&sdata
->vif
))
1481 ieee80211_mesh_work(sdata
);
1483 case NL80211_IFTYPE_OCB
:
1484 ieee80211_ocb_work(sdata
);
1491 static void ieee80211_recalc_smps_work(struct work_struct
*work
)
1493 struct ieee80211_sub_if_data
*sdata
=
1494 container_of(work
, struct ieee80211_sub_if_data
, recalc_smps
);
1496 ieee80211_recalc_smps(sdata
);
1500 * Helper function to initialise an interface to a specific type.
1502 static void ieee80211_setup_sdata(struct ieee80211_sub_if_data
*sdata
,
1503 enum nl80211_iftype type
)
1505 static const u8 bssid_wildcard
[ETH_ALEN
] = {0xff, 0xff, 0xff,
1508 /* clear type-dependent union */
1509 memset(&sdata
->u
, 0, sizeof(sdata
->u
));
1511 /* and set some type-dependent values */
1512 sdata
->vif
.type
= type
;
1513 sdata
->vif
.p2p
= false;
1514 sdata
->wdev
.iftype
= type
;
1516 sdata
->control_port_protocol
= cpu_to_be16(ETH_P_PAE
);
1517 sdata
->control_port_no_encrypt
= false;
1518 sdata
->control_port_over_nl80211
= false;
1519 sdata
->control_port_no_preauth
= false;
1520 sdata
->encrypt_headroom
= IEEE80211_ENCRYPT_HEADROOM
;
1521 sdata
->vif
.bss_conf
.idle
= true;
1522 sdata
->vif
.bss_conf
.txpower
= INT_MIN
; /* unset */
1524 sdata
->noack_map
= 0;
1526 /* only monitor/p2p-device differ */
1528 sdata
->dev
->netdev_ops
= &ieee80211_dataif_ops
;
1529 sdata
->dev
->type
= ARPHRD_ETHER
;
1532 skb_queue_head_init(&sdata
->skb_queue
);
1533 INIT_WORK(&sdata
->work
, ieee80211_iface_work
);
1534 INIT_WORK(&sdata
->recalc_smps
, ieee80211_recalc_smps_work
);
1535 INIT_WORK(&sdata
->csa_finalize_work
, ieee80211_csa_finalize_work
);
1536 INIT_LIST_HEAD(&sdata
->assigned_chanctx_list
);
1537 INIT_LIST_HEAD(&sdata
->reserved_chanctx_list
);
1540 case NL80211_IFTYPE_P2P_GO
:
1541 type
= NL80211_IFTYPE_AP
;
1542 sdata
->vif
.type
= type
;
1543 sdata
->vif
.p2p
= true;
1545 case NL80211_IFTYPE_AP
:
1546 skb_queue_head_init(&sdata
->u
.ap
.ps
.bc_buf
);
1547 INIT_LIST_HEAD(&sdata
->u
.ap
.vlans
);
1548 sdata
->vif
.bss_conf
.bssid
= sdata
->vif
.addr
;
1550 case NL80211_IFTYPE_P2P_CLIENT
:
1551 type
= NL80211_IFTYPE_STATION
;
1552 sdata
->vif
.type
= type
;
1553 sdata
->vif
.p2p
= true;
1555 case NL80211_IFTYPE_STATION
:
1556 sdata
->vif
.bss_conf
.bssid
= sdata
->u
.mgd
.bssid
;
1557 ieee80211_sta_setup_sdata(sdata
);
1559 case NL80211_IFTYPE_OCB
:
1560 sdata
->vif
.bss_conf
.bssid
= bssid_wildcard
;
1561 ieee80211_ocb_setup_sdata(sdata
);
1563 case NL80211_IFTYPE_ADHOC
:
1564 sdata
->vif
.bss_conf
.bssid
= sdata
->u
.ibss
.bssid
;
1565 ieee80211_ibss_setup_sdata(sdata
);
1567 case NL80211_IFTYPE_MESH_POINT
:
1568 if (ieee80211_vif_is_mesh(&sdata
->vif
))
1569 ieee80211_mesh_init_sdata(sdata
);
1571 case NL80211_IFTYPE_MONITOR
:
1572 sdata
->dev
->type
= ARPHRD_IEEE80211_RADIOTAP
;
1573 sdata
->dev
->netdev_ops
= &ieee80211_monitorif_ops
;
1574 sdata
->u
.mntr
.flags
= MONITOR_FLAG_CONTROL
|
1575 MONITOR_FLAG_OTHER_BSS
;
1577 case NL80211_IFTYPE_WDS
:
1578 sdata
->vif
.bss_conf
.bssid
= NULL
;
1580 case NL80211_IFTYPE_NAN
:
1581 idr_init(&sdata
->u
.nan
.function_inst_ids
);
1582 spin_lock_init(&sdata
->u
.nan
.func_lock
);
1583 sdata
->vif
.bss_conf
.bssid
= sdata
->vif
.addr
;
1585 case NL80211_IFTYPE_AP_VLAN
:
1586 case NL80211_IFTYPE_P2P_DEVICE
:
1587 sdata
->vif
.bss_conf
.bssid
= sdata
->vif
.addr
;
1589 case NL80211_IFTYPE_UNSPECIFIED
:
1590 case NUM_NL80211_IFTYPES
:
1595 ieee80211_debugfs_add_netdev(sdata
);
1598 static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data
*sdata
,
1599 enum nl80211_iftype type
)
1601 struct ieee80211_local
*local
= sdata
->local
;
1603 enum nl80211_iftype internal_type
= type
;
1608 if (!local
->ops
->change_interface
)
1611 switch (sdata
->vif
.type
) {
1612 case NL80211_IFTYPE_AP
:
1613 case NL80211_IFTYPE_STATION
:
1614 case NL80211_IFTYPE_ADHOC
:
1615 case NL80211_IFTYPE_OCB
:
1617 * Could maybe also all others here?
1618 * Just not sure how that interacts
1619 * with the RX/config path e.g. for
1628 case NL80211_IFTYPE_AP
:
1629 case NL80211_IFTYPE_STATION
:
1630 case NL80211_IFTYPE_ADHOC
:
1631 case NL80211_IFTYPE_OCB
:
1633 * Could probably support everything
1634 * but WDS here (WDS do_open can fail
1635 * under memory pressure, which this
1636 * code isn't prepared to handle).
1639 case NL80211_IFTYPE_P2P_CLIENT
:
1641 internal_type
= NL80211_IFTYPE_STATION
;
1643 case NL80211_IFTYPE_P2P_GO
:
1645 internal_type
= NL80211_IFTYPE_AP
;
1651 ret
= ieee80211_check_concurrent_iface(sdata
, internal_type
);
1655 ieee80211_do_stop(sdata
, false);
1657 ieee80211_teardown_sdata(sdata
);
1659 ieee80211_set_sdata_offload_flags(sdata
);
1660 ret
= drv_change_interface(local
, sdata
, internal_type
, p2p
);
1662 type
= ieee80211_vif_type_p2p(&sdata
->vif
);
1665 * Ignore return value here, there's not much we can do since
1666 * the driver changed the interface type internally already.
1667 * The warnings will hopefully make driver authors fix it :-)
1669 ieee80211_check_queues(sdata
, type
);
1671 ieee80211_setup_sdata(sdata
, type
);
1672 ieee80211_set_vif_encap_ops(sdata
);
1674 err
= ieee80211_do_open(&sdata
->wdev
, false);
1675 WARN(err
, "type change: do_open returned %d", err
);
1680 int ieee80211_if_change_type(struct ieee80211_sub_if_data
*sdata
,
1681 enum nl80211_iftype type
)
1687 if (type
== ieee80211_vif_type_p2p(&sdata
->vif
))
1690 if (ieee80211_sdata_running(sdata
)) {
1691 ret
= ieee80211_runtime_change_iftype(sdata
, type
);
1695 /* Purge and reset type-dependent state. */
1696 ieee80211_teardown_sdata(sdata
);
1697 ieee80211_setup_sdata(sdata
, type
);
1700 /* reset some values that shouldn't be kept across type changes */
1701 if (type
== NL80211_IFTYPE_STATION
)
1702 sdata
->u
.mgd
.use_4addr
= false;
1707 static void ieee80211_assign_perm_addr(struct ieee80211_local
*local
,
1708 u8
*perm_addr
, enum nl80211_iftype type
)
1710 struct ieee80211_sub_if_data
*sdata
;
1711 u64 mask
, start
, addr
, val
, inc
;
1713 u8 tmp_addr
[ETH_ALEN
];
1716 /* default ... something at least */
1717 memcpy(perm_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1719 if (is_zero_ether_addr(local
->hw
.wiphy
->addr_mask
) &&
1720 local
->hw
.wiphy
->n_addresses
<= 1)
1723 mutex_lock(&local
->iflist_mtx
);
1726 case NL80211_IFTYPE_MONITOR
:
1727 /* doesn't matter */
1729 case NL80211_IFTYPE_WDS
:
1730 case NL80211_IFTYPE_AP_VLAN
:
1731 /* match up with an AP interface */
1732 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1733 if (sdata
->vif
.type
!= NL80211_IFTYPE_AP
)
1735 memcpy(perm_addr
, sdata
->vif
.addr
, ETH_ALEN
);
1738 /* keep default if no AP interface present */
1740 case NL80211_IFTYPE_P2P_CLIENT
:
1741 case NL80211_IFTYPE_P2P_GO
:
1742 if (ieee80211_hw_check(&local
->hw
, P2P_DEV_ADDR_FOR_INTF
)) {
1743 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1744 if (sdata
->vif
.type
!= NL80211_IFTYPE_P2P_DEVICE
)
1746 if (!ieee80211_sdata_running(sdata
))
1748 memcpy(perm_addr
, sdata
->vif
.addr
, ETH_ALEN
);
1754 /* assign a new address if possible -- try n_addresses first */
1755 for (i
= 0; i
< local
->hw
.wiphy
->n_addresses
; i
++) {
1758 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1759 if (ether_addr_equal(local
->hw
.wiphy
->addresses
[i
].addr
,
1768 local
->hw
.wiphy
->addresses
[i
].addr
,
1774 /* try mask if available */
1775 if (is_zero_ether_addr(local
->hw
.wiphy
->addr_mask
))
1778 m
= local
->hw
.wiphy
->addr_mask
;
1779 mask
= ((u64
)m
[0] << 5*8) | ((u64
)m
[1] << 4*8) |
1780 ((u64
)m
[2] << 3*8) | ((u64
)m
[3] << 2*8) |
1781 ((u64
)m
[4] << 1*8) | ((u64
)m
[5] << 0*8);
1783 if (__ffs64(mask
) + hweight64(mask
) != fls64(mask
)) {
1784 /* not a contiguous mask ... not handled now! */
1785 pr_info("not contiguous\n");
1790 * Pick address of existing interface in case user changed
1791 * MAC address manually, default to perm_addr.
1793 m
= local
->hw
.wiphy
->perm_addr
;
1794 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1795 if (sdata
->vif
.type
== NL80211_IFTYPE_MONITOR
)
1797 m
= sdata
->vif
.addr
;
1800 start
= ((u64
)m
[0] << 5*8) | ((u64
)m
[1] << 4*8) |
1801 ((u64
)m
[2] << 3*8) | ((u64
)m
[3] << 2*8) |
1802 ((u64
)m
[4] << 1*8) | ((u64
)m
[5] << 0*8);
1804 inc
= 1ULL<<__ffs64(mask
);
1805 val
= (start
& mask
);
1806 addr
= (start
& ~mask
) | (val
& mask
);
1810 tmp_addr
[5] = addr
>> 0*8;
1811 tmp_addr
[4] = addr
>> 1*8;
1812 tmp_addr
[3] = addr
>> 2*8;
1813 tmp_addr
[2] = addr
>> 3*8;
1814 tmp_addr
[1] = addr
>> 4*8;
1815 tmp_addr
[0] = addr
>> 5*8;
1819 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1820 if (ether_addr_equal(tmp_addr
, sdata
->vif
.addr
)) {
1827 memcpy(perm_addr
, tmp_addr
, ETH_ALEN
);
1830 addr
= (start
& ~mask
) | (val
& mask
);
1831 } while (addr
!= start
);
1837 mutex_unlock(&local
->iflist_mtx
);
1840 int ieee80211_if_add(struct ieee80211_local
*local
, const char *name
,
1841 unsigned char name_assign_type
,
1842 struct wireless_dev
**new_wdev
, enum nl80211_iftype type
,
1843 struct vif_params
*params
)
1845 struct net_device
*ndev
= NULL
;
1846 struct ieee80211_sub_if_data
*sdata
= NULL
;
1847 struct txq_info
*txqi
;
1848 void (*if_setup
)(struct net_device
*dev
);
1854 if (type
== NL80211_IFTYPE_P2P_DEVICE
|| type
== NL80211_IFTYPE_NAN
) {
1855 struct wireless_dev
*wdev
;
1857 sdata
= kzalloc(sizeof(*sdata
) + local
->hw
.vif_data_size
,
1861 wdev
= &sdata
->wdev
;
1864 strlcpy(sdata
->name
, name
, IFNAMSIZ
);
1865 ieee80211_assign_perm_addr(local
, wdev
->address
, type
);
1866 memcpy(sdata
->vif
.addr
, wdev
->address
, ETH_ALEN
);
1868 int size
= ALIGN(sizeof(*sdata
) + local
->hw
.vif_data_size
,
1872 if (local
->ops
->wake_tx_queue
&&
1873 type
!= NL80211_IFTYPE_AP_VLAN
&&
1874 (type
!= NL80211_IFTYPE_MONITOR
||
1875 (params
->flags
& MONITOR_FLAG_ACTIVE
)))
1876 txq_size
+= sizeof(struct txq_info
) +
1877 local
->hw
.txq_data_size
;
1879 if (local
->ops
->wake_tx_queue
) {
1880 if_setup
= ieee80211_if_setup_no_queue
;
1882 if_setup
= ieee80211_if_setup
;
1883 if (local
->hw
.queues
>= IEEE80211_NUM_ACS
)
1884 txqs
= IEEE80211_NUM_ACS
;
1887 ndev
= alloc_netdev_mqs(size
+ txq_size
,
1888 name
, name_assign_type
,
1893 if (!local
->ops
->wake_tx_queue
&& local
->hw
.wiphy
->tx_queue_len
)
1894 ndev
->tx_queue_len
= local
->hw
.wiphy
->tx_queue_len
;
1896 dev_net_set(ndev
, wiphy_net(local
->hw
.wiphy
));
1898 ndev
->tstats
= netdev_alloc_pcpu_stats(struct pcpu_sw_netstats
);
1899 if (!ndev
->tstats
) {
1904 ndev
->needed_headroom
= local
->tx_headroom
+
1905 4*6 /* four MAC addresses */
1906 + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
1908 + 8 /* rfc1042/bridge tunnel */
1909 - ETH_HLEN
/* ethernet hard_header_len */
1910 + IEEE80211_ENCRYPT_HEADROOM
;
1911 ndev
->needed_tailroom
= IEEE80211_ENCRYPT_TAILROOM
;
1913 ret
= dev_alloc_name(ndev
, ndev
->name
);
1915 ieee80211_if_free(ndev
);
1920 ieee80211_assign_perm_addr(local
, ndev
->perm_addr
, type
);
1921 if (is_valid_ether_addr(params
->macaddr
))
1922 memcpy(ndev
->dev_addr
, params
->macaddr
, ETH_ALEN
);
1924 memcpy(ndev
->dev_addr
, ndev
->perm_addr
, ETH_ALEN
);
1925 SET_NETDEV_DEV(ndev
, wiphy_dev(local
->hw
.wiphy
));
1927 /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */
1928 sdata
= netdev_priv(ndev
);
1929 ndev
->ieee80211_ptr
= &sdata
->wdev
;
1930 memcpy(sdata
->vif
.addr
, ndev
->dev_addr
, ETH_ALEN
);
1931 memcpy(sdata
->name
, ndev
->name
, IFNAMSIZ
);
1934 txqi
= netdev_priv(ndev
) + size
;
1935 ieee80211_txq_init(sdata
, NULL
, txqi
, 0);
1941 /* initialise type-independent data */
1942 sdata
->wdev
.wiphy
= local
->hw
.wiphy
;
1943 sdata
->local
= local
;
1945 for (i
= 0; i
< IEEE80211_FRAGMENT_MAX
; i
++)
1946 skb_queue_head_init(&sdata
->fragments
[i
].skb_list
);
1948 INIT_LIST_HEAD(&sdata
->key_list
);
1950 INIT_DELAYED_WORK(&sdata
->dfs_cac_timer_work
,
1951 ieee80211_dfs_cac_timer_work
);
1952 INIT_DELAYED_WORK(&sdata
->dec_tailroom_needed_wk
,
1953 ieee80211_delayed_tailroom_dec
);
1955 for (i
= 0; i
< NUM_NL80211_BANDS
; i
++) {
1956 struct ieee80211_supported_band
*sband
;
1957 sband
= local
->hw
.wiphy
->bands
[i
];
1958 sdata
->rc_rateidx_mask
[i
] =
1959 sband
? (1 << sband
->n_bitrates
) - 1 : 0;
1964 memcpy(sdata
->rc_rateidx_mcs_mask
[i
],
1965 sband
->ht_cap
.mcs
.rx_mask
,
1966 sizeof(sdata
->rc_rateidx_mcs_mask
[i
]));
1968 cap
= sband
->vht_cap
.vht_mcs
.rx_mcs_map
;
1969 vht_rate_mask
= sdata
->rc_rateidx_vht_mcs_mask
[i
];
1970 ieee80211_get_vht_mask_from_cap(cap
, vht_rate_mask
);
1972 memset(sdata
->rc_rateidx_mcs_mask
[i
], 0,
1973 sizeof(sdata
->rc_rateidx_mcs_mask
[i
]));
1974 memset(sdata
->rc_rateidx_vht_mcs_mask
[i
], 0,
1975 sizeof(sdata
->rc_rateidx_vht_mcs_mask
[i
]));
1979 ieee80211_set_default_queues(sdata
);
1981 sdata
->ap_power_level
= IEEE80211_UNSET_POWER_LEVEL
;
1982 sdata
->user_power_level
= local
->user_power_level
;
1984 sdata
->encrypt_headroom
= IEEE80211_ENCRYPT_HEADROOM
;
1986 /* setup type-dependent data */
1987 ieee80211_setup_sdata(sdata
, type
);
1990 ndev
->ieee80211_ptr
->use_4addr
= params
->use_4addr
;
1991 if (type
== NL80211_IFTYPE_STATION
)
1992 sdata
->u
.mgd
.use_4addr
= params
->use_4addr
;
1994 ndev
->features
|= local
->hw
.netdev_features
;
1995 ndev
->hw_features
|= ndev
->features
&
1996 MAC80211_SUPPORTED_FEATURES_TX
;
1998 netdev_set_default_ethtool_ops(ndev
, &ieee80211_ethtool_ops
);
2000 /* MTU range: 256 - 2304 */
2001 ndev
->min_mtu
= 256;
2002 ndev
->max_mtu
= local
->hw
.max_mtu
;
2004 ret
= register_netdevice(ndev
);
2011 mutex_lock(&local
->iflist_mtx
);
2012 list_add_tail_rcu(&sdata
->list
, &local
->interfaces
);
2013 mutex_unlock(&local
->iflist_mtx
);
2016 *new_wdev
= &sdata
->wdev
;
2021 void ieee80211_if_remove(struct ieee80211_sub_if_data
*sdata
)
2025 mutex_lock(&sdata
->local
->iflist_mtx
);
2026 list_del_rcu(&sdata
->list
);
2027 mutex_unlock(&sdata
->local
->iflist_mtx
);
2030 ieee80211_txq_purge(sdata
->local
, to_txq_info(sdata
->vif
.txq
));
2035 unregister_netdevice(sdata
->dev
);
2037 cfg80211_unregister_wdev(&sdata
->wdev
);
2038 ieee80211_teardown_sdata(sdata
);
2043 void ieee80211_sdata_stop(struct ieee80211_sub_if_data
*sdata
)
2045 if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING
, &sdata
->state
)))
2047 ieee80211_do_stop(sdata
, true);
2050 void ieee80211_remove_interfaces(struct ieee80211_local
*local
)
2052 struct ieee80211_sub_if_data
*sdata
, *tmp
;
2053 LIST_HEAD(unreg_list
);
2054 LIST_HEAD(wdev_list
);
2058 /* Before destroying the interfaces, make sure they're all stopped so
2059 * that the hardware is stopped. Otherwise, the driver might still be
2060 * iterating the interfaces during the shutdown, e.g. from a worker
2061 * or from RX processing or similar, and if it does so (using atomic
2062 * iteration) while we're manipulating the list, the iteration will
2065 * After this, the hardware should be stopped and the driver should
2066 * have stopped all of its activities, so that we can do RCU-unaware
2067 * manipulations of the interface list below.
2069 cfg80211_shutdown_all_interfaces(local
->hw
.wiphy
);
2071 WARN(local
->open_count
, "%s: open count remains %d\n",
2072 wiphy_name(local
->hw
.wiphy
), local
->open_count
);
2074 ieee80211_txq_teardown_flows(local
);
2076 mutex_lock(&local
->iflist_mtx
);
2077 list_for_each_entry_safe(sdata
, tmp
, &local
->interfaces
, list
) {
2078 list_del(&sdata
->list
);
2081 unregister_netdevice_queue(sdata
->dev
, &unreg_list
);
2083 list_add(&sdata
->list
, &wdev_list
);
2085 mutex_unlock(&local
->iflist_mtx
);
2086 unregister_netdevice_many(&unreg_list
);
2088 list_for_each_entry_safe(sdata
, tmp
, &wdev_list
, list
) {
2089 list_del(&sdata
->list
);
2090 cfg80211_unregister_wdev(&sdata
->wdev
);
2095 static int netdev_notify(struct notifier_block
*nb
,
2096 unsigned long state
, void *ptr
)
2098 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
2099 struct ieee80211_sub_if_data
*sdata
;
2101 if (state
!= NETDEV_CHANGENAME
)
2104 if (!dev
->ieee80211_ptr
|| !dev
->ieee80211_ptr
->wiphy
)
2107 if (dev
->ieee80211_ptr
->wiphy
->privid
!= mac80211_wiphy_privid
)
2110 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2111 memcpy(sdata
->name
, dev
->name
, IFNAMSIZ
);
2112 ieee80211_debugfs_rename_netdev(sdata
);
2117 static struct notifier_block mac80211_netdev_notifier
= {
2118 .notifier_call
= netdev_notify
,
2121 int ieee80211_iface_init(void)
2123 return register_netdevice_notifier(&mac80211_netdev_notifier
);
2126 void ieee80211_iface_exit(void)
2128 unregister_netdevice_notifier(&mac80211_netdev_notifier
);
2131 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data
*sdata
)
2133 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
)
2134 atomic_inc(&sdata
->u
.ap
.num_mcast_sta
);
2135 else if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
)
2136 atomic_inc(&sdata
->u
.vlan
.num_mcast_sta
);
2139 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data
*sdata
)
2141 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
)
2142 atomic_dec(&sdata
->u
.ap
.num_mcast_sta
);
2143 else if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
)
2144 atomic_dec(&sdata
->u
.vlan
.num_mcast_sta
);