2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <net/mac80211.h>
12 #include <net/ieee80211_radiotap.h>
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/netdevice.h>
16 #include <linux/types.h>
17 #include <linux/slab.h>
18 #include <linux/skbuff.h>
19 #include <linux/etherdevice.h>
20 #include <linux/if_arp.h>
21 #include <linux/wireless.h>
22 #include <linux/rtnetlink.h>
23 #include <linux/bitmap.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
27 #include "ieee80211_i.h"
28 #include "ieee80211_rate.h"
32 #include "ieee80211_led.h"
35 #include "debugfs_netdev.h"
37 #define SUPP_MCS_SET_LEN 16
40 * For seeing transmitted packets on monitor interfaces
41 * we have a radiotap header too.
43 struct ieee80211_tx_status_rtap_hdr
{
44 struct ieee80211_radiotap_header hdr
;
47 } __attribute__ ((packed
));
49 /* common interface routines */
51 static int header_parse_80211(const struct sk_buff
*skb
, unsigned char *haddr
)
53 memcpy(haddr
, skb_mac_header(skb
) + 10, ETH_ALEN
); /* addr2 */
57 /* must be called under mdev tx lock */
58 static void ieee80211_configure_filter(struct ieee80211_local
*local
)
60 unsigned int changed_flags
;
61 unsigned int new_flags
= 0;
63 if (atomic_read(&local
->iff_promiscs
))
64 new_flags
|= FIF_PROMISC_IN_BSS
;
66 if (atomic_read(&local
->iff_allmultis
))
67 new_flags
|= FIF_ALLMULTI
;
70 new_flags
|= FIF_CONTROL
|
72 FIF_BCN_PRBRESP_PROMISC
;
74 changed_flags
= local
->filter_flags
^ new_flags
;
79 local
->ops
->configure_filter(local_to_hw(local
),
80 changed_flags
, &new_flags
,
81 local
->mdev
->mc_count
,
82 local
->mdev
->mc_list
);
84 WARN_ON(new_flags
& (1<<31));
86 local
->filter_flags
= new_flags
& ~(1<<31);
89 /* master interface */
91 static int ieee80211_master_open(struct net_device
*dev
)
93 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
94 struct ieee80211_sub_if_data
*sdata
;
95 int res
= -EOPNOTSUPP
;
97 /* we hold the RTNL here so can safely walk the list */
98 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
99 if (sdata
->dev
!= dev
&& netif_running(sdata
->dev
)) {
107 static int ieee80211_master_stop(struct net_device
*dev
)
109 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
110 struct ieee80211_sub_if_data
*sdata
;
112 /* we hold the RTNL here so can safely walk the list */
113 list_for_each_entry(sdata
, &local
->interfaces
, list
)
114 if (sdata
->dev
!= dev
&& netif_running(sdata
->dev
))
115 dev_close(sdata
->dev
);
120 static void ieee80211_master_set_multicast_list(struct net_device
*dev
)
122 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
124 ieee80211_configure_filter(local
);
127 /* regular interfaces */
129 static int ieee80211_change_mtu(struct net_device
*dev
, int new_mtu
)
131 /* FIX: what would be proper limits for MTU?
132 * This interface uses 802.3 frames. */
133 if (new_mtu
< 256 || new_mtu
> IEEE80211_MAX_DATA_LEN
- 24 - 6) {
134 printk(KERN_WARNING
"%s: invalid MTU %d\n",
139 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
140 printk(KERN_DEBUG
"%s: setting MTU %d\n", dev
->name
, new_mtu
);
141 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
146 static inline int identical_mac_addr_allowed(int type1
, int type2
)
148 return (type1
== IEEE80211_IF_TYPE_MNTR
||
149 type2
== IEEE80211_IF_TYPE_MNTR
||
150 (type1
== IEEE80211_IF_TYPE_AP
&&
151 type2
== IEEE80211_IF_TYPE_WDS
) ||
152 (type1
== IEEE80211_IF_TYPE_WDS
&&
153 (type2
== IEEE80211_IF_TYPE_WDS
||
154 type2
== IEEE80211_IF_TYPE_AP
)) ||
155 (type1
== IEEE80211_IF_TYPE_AP
&&
156 type2
== IEEE80211_IF_TYPE_VLAN
) ||
157 (type1
== IEEE80211_IF_TYPE_VLAN
&&
158 (type2
== IEEE80211_IF_TYPE_AP
||
159 type2
== IEEE80211_IF_TYPE_VLAN
)));
162 static int ieee80211_open(struct net_device
*dev
)
164 struct ieee80211_sub_if_data
*sdata
, *nsdata
;
165 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
166 struct ieee80211_if_init_conf conf
;
169 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
171 /* we hold the RTNL here so can safely walk the list */
172 list_for_each_entry(nsdata
, &local
->interfaces
, list
) {
173 struct net_device
*ndev
= nsdata
->dev
;
175 if (ndev
!= dev
&& ndev
!= local
->mdev
&& netif_running(ndev
) &&
176 compare_ether_addr(dev
->dev_addr
, ndev
->dev_addr
) == 0) {
178 * check whether it may have the same address
180 if (!identical_mac_addr_allowed(sdata
->vif
.type
,
185 * can only add VLANs to enabled APs
187 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_VLAN
&&
188 nsdata
->vif
.type
== IEEE80211_IF_TYPE_AP
&&
189 netif_running(nsdata
->dev
))
190 sdata
->u
.vlan
.ap
= nsdata
;
194 switch (sdata
->vif
.type
) {
195 case IEEE80211_IF_TYPE_WDS
:
196 if (is_zero_ether_addr(sdata
->u
.wds
.remote_addr
))
199 case IEEE80211_IF_TYPE_VLAN
:
200 if (!sdata
->u
.vlan
.ap
)
203 case IEEE80211_IF_TYPE_AP
:
204 case IEEE80211_IF_TYPE_STA
:
205 case IEEE80211_IF_TYPE_MNTR
:
206 case IEEE80211_IF_TYPE_IBSS
:
207 /* no special treatment */
209 case IEEE80211_IF_TYPE_INVALID
:
215 if (local
->open_count
== 0) {
217 if (local
->ops
->start
)
218 res
= local
->ops
->start(local_to_hw(local
));
221 ieee80211_hw_config(local
);
222 ieee80211_led_radio(local
, local
->hw
.conf
.radio_enabled
);
225 switch (sdata
->vif
.type
) {
226 case IEEE80211_IF_TYPE_VLAN
:
227 list_add(&sdata
->u
.vlan
.list
, &sdata
->u
.vlan
.ap
->u
.ap
.vlans
);
228 /* no need to tell driver */
230 case IEEE80211_IF_TYPE_MNTR
:
231 /* must be before the call to ieee80211_configure_filter */
233 if (local
->monitors
== 1) {
234 netif_tx_lock_bh(local
->mdev
);
235 ieee80211_configure_filter(local
);
236 netif_tx_unlock_bh(local
->mdev
);
238 local
->hw
.conf
.flags
|= IEEE80211_CONF_RADIOTAP
;
241 case IEEE80211_IF_TYPE_STA
:
242 case IEEE80211_IF_TYPE_IBSS
:
243 sdata
->u
.sta
.flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
246 conf
.vif
= &sdata
->vif
;
247 conf
.type
= sdata
->vif
.type
;
248 conf
.mac_addr
= dev
->dev_addr
;
249 res
= local
->ops
->add_interface(local_to_hw(local
), &conf
);
250 if (res
&& !local
->open_count
&& local
->ops
->stop
)
251 local
->ops
->stop(local_to_hw(local
));
255 ieee80211_if_config(dev
);
256 ieee80211_reset_erp_info(dev
);
257 ieee80211_enable_keys(sdata
);
259 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
260 !(sdata
->flags
& IEEE80211_SDATA_USERSPACE_MLME
))
261 netif_carrier_off(dev
);
263 netif_carrier_on(dev
);
266 if (local
->open_count
== 0) {
267 res
= dev_open(local
->mdev
);
269 tasklet_enable(&local
->tx_pending_tasklet
);
270 tasklet_enable(&local
->tasklet
);
274 * set_multicast_list will be invoked by the networking core
275 * which will check whether any increments here were done in
276 * error and sync them down to the hardware as filter flags.
278 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
279 atomic_inc(&local
->iff_allmultis
);
281 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
282 atomic_inc(&local
->iff_promiscs
);
286 netif_start_queue(dev
);
291 static int ieee80211_stop(struct net_device
*dev
)
293 struct ieee80211_sub_if_data
*sdata
;
294 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
295 struct ieee80211_if_init_conf conf
;
296 struct sta_info
*sta
;
299 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
301 list_for_each_entry(sta
, &local
->sta_list
, list
) {
303 for (i
= 0; i
< STA_TID_NUM
; i
++)
304 ieee80211_sta_stop_rx_ba_session(sta
->dev
,
307 WLAN_REASON_QSTA_LEAVE_QBSS
);
310 netif_stop_queue(dev
);
313 * Don't count this interface for promisc/allmulti while it
314 * is down. dev_mc_unsync() will invoke set_multicast_list
315 * on the master interface which will sync these down to the
316 * hardware as filter flags.
318 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
319 atomic_dec(&local
->iff_allmultis
);
321 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
322 atomic_dec(&local
->iff_promiscs
);
324 dev_mc_unsync(local
->mdev
, dev
);
326 /* APs need special treatment */
327 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
) {
328 struct ieee80211_sub_if_data
*vlan
, *tmp
;
329 struct beacon_data
*old_beacon
= sdata
->u
.ap
.beacon
;
332 rcu_assign_pointer(sdata
->u
.ap
.beacon
, NULL
);
336 /* down all dependent devices, that is VLANs */
337 list_for_each_entry_safe(vlan
, tmp
, &sdata
->u
.ap
.vlans
,
339 dev_close(vlan
->dev
);
340 WARN_ON(!list_empty(&sdata
->u
.ap
.vlans
));
345 switch (sdata
->vif
.type
) {
346 case IEEE80211_IF_TYPE_VLAN
:
347 list_del(&sdata
->u
.vlan
.list
);
348 sdata
->u
.vlan
.ap
= NULL
;
349 /* no need to tell driver */
351 case IEEE80211_IF_TYPE_MNTR
:
353 if (local
->monitors
== 0) {
354 netif_tx_lock_bh(local
->mdev
);
355 ieee80211_configure_filter(local
);
356 netif_tx_unlock_bh(local
->mdev
);
358 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_RADIOTAP
;
361 case IEEE80211_IF_TYPE_STA
:
362 case IEEE80211_IF_TYPE_IBSS
:
363 sdata
->u
.sta
.state
= IEEE80211_DISABLED
;
364 del_timer_sync(&sdata
->u
.sta
.timer
);
366 * When we get here, the interface is marked down.
367 * Call synchronize_rcu() to wait for the RX path
368 * should it be using the interface and enqueuing
369 * frames at this very time on another CPU.
372 skb_queue_purge(&sdata
->u
.sta
.skb_queue
);
374 if (local
->scan_dev
== sdata
->dev
) {
375 if (!local
->ops
->hw_scan
) {
376 local
->sta_sw_scanning
= 0;
377 cancel_delayed_work(&local
->scan_work
);
379 local
->sta_hw_scanning
= 0;
382 flush_workqueue(local
->hw
.workqueue
);
384 sdata
->u
.sta
.flags
&= ~IEEE80211_STA_PRIVACY_INVOKED
;
385 kfree(sdata
->u
.sta
.extra_ie
);
386 sdata
->u
.sta
.extra_ie
= NULL
;
387 sdata
->u
.sta
.extra_ie_len
= 0;
390 conf
.vif
= &sdata
->vif
;
391 conf
.type
= sdata
->vif
.type
;
392 conf
.mac_addr
= dev
->dev_addr
;
393 /* disable all keys for as long as this netdev is down */
394 ieee80211_disable_keys(sdata
);
395 local
->ops
->remove_interface(local_to_hw(local
), &conf
);
398 if (local
->open_count
== 0) {
399 if (netif_running(local
->mdev
))
400 dev_close(local
->mdev
);
402 if (local
->ops
->stop
)
403 local
->ops
->stop(local_to_hw(local
));
405 ieee80211_led_radio(local
, 0);
407 tasklet_disable(&local
->tx_pending_tasklet
);
408 tasklet_disable(&local
->tasklet
);
414 static void ieee80211_set_multicast_list(struct net_device
*dev
)
416 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
417 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
418 int allmulti
, promisc
, sdata_allmulti
, sdata_promisc
;
420 allmulti
= !!(dev
->flags
& IFF_ALLMULTI
);
421 promisc
= !!(dev
->flags
& IFF_PROMISC
);
422 sdata_allmulti
= !!(sdata
->flags
& IEEE80211_SDATA_ALLMULTI
);
423 sdata_promisc
= !!(sdata
->flags
& IEEE80211_SDATA_PROMISC
);
425 if (allmulti
!= sdata_allmulti
) {
426 if (dev
->flags
& IFF_ALLMULTI
)
427 atomic_inc(&local
->iff_allmultis
);
429 atomic_dec(&local
->iff_allmultis
);
430 sdata
->flags
^= IEEE80211_SDATA_ALLMULTI
;
433 if (promisc
!= sdata_promisc
) {
434 if (dev
->flags
& IFF_PROMISC
)
435 atomic_inc(&local
->iff_promiscs
);
437 atomic_dec(&local
->iff_promiscs
);
438 sdata
->flags
^= IEEE80211_SDATA_PROMISC
;
441 dev_mc_sync(local
->mdev
, dev
);
444 static const struct header_ops ieee80211_header_ops
= {
445 .create
= eth_header
,
446 .parse
= header_parse_80211
,
447 .rebuild
= eth_rebuild_header
,
448 .cache
= eth_header_cache
,
449 .cache_update
= eth_header_cache_update
,
452 /* Must not be called for mdev */
453 void ieee80211_if_setup(struct net_device
*dev
)
456 dev
->hard_start_xmit
= ieee80211_subif_start_xmit
;
457 dev
->wireless_handlers
= &ieee80211_iw_handler_def
;
458 dev
->set_multicast_list
= ieee80211_set_multicast_list
;
459 dev
->change_mtu
= ieee80211_change_mtu
;
460 dev
->open
= ieee80211_open
;
461 dev
->stop
= ieee80211_stop
;
462 dev
->destructor
= ieee80211_if_free
;
465 /* WDS specialties */
467 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
)
469 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
470 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
471 struct sta_info
*sta
;
472 DECLARE_MAC_BUF(mac
);
474 if (compare_ether_addr(remote_addr
, sdata
->u
.wds
.remote_addr
) == 0)
477 /* Create STA entry for the new peer */
478 sta
= sta_info_add(local
, dev
, remote_addr
, GFP_KERNEL
);
483 /* Remove STA entry for the old peer */
484 sta
= sta_info_get(local
, sdata
->u
.wds
.remote_addr
);
489 printk(KERN_DEBUG
"%s: could not find STA entry for WDS link "
491 dev
->name
, print_mac(mac
, sdata
->u
.wds
.remote_addr
));
494 /* Update WDS link data */
495 memcpy(&sdata
->u
.wds
.remote_addr
, remote_addr
, ETH_ALEN
);
500 /* everything else */
502 static int __ieee80211_if_config(struct net_device
*dev
,
503 struct sk_buff
*beacon
,
504 struct ieee80211_tx_control
*control
)
506 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
507 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
508 struct ieee80211_if_conf conf
;
510 if (!local
->ops
->config_interface
|| !netif_running(dev
))
513 memset(&conf
, 0, sizeof(conf
));
514 conf
.type
= sdata
->vif
.type
;
515 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
||
516 sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
517 conf
.bssid
= sdata
->u
.sta
.bssid
;
518 conf
.ssid
= sdata
->u
.sta
.ssid
;
519 conf
.ssid_len
= sdata
->u
.sta
.ssid_len
;
520 } else if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
) {
521 conf
.ssid
= sdata
->u
.ap
.ssid
;
522 conf
.ssid_len
= sdata
->u
.ap
.ssid_len
;
523 conf
.beacon
= beacon
;
524 conf
.beacon_control
= control
;
526 return local
->ops
->config_interface(local_to_hw(local
),
530 int ieee80211_if_config(struct net_device
*dev
)
532 return __ieee80211_if_config(dev
, NULL
, NULL
);
535 int ieee80211_if_config_beacon(struct net_device
*dev
)
537 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
538 struct ieee80211_tx_control control
;
539 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
542 if (!(local
->hw
.flags
& IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
))
544 skb
= ieee80211_beacon_get(local_to_hw(local
), &sdata
->vif
,
548 return __ieee80211_if_config(dev
, skb
, &control
);
551 int ieee80211_hw_config(struct ieee80211_local
*local
)
553 struct ieee80211_hw_mode
*mode
;
554 struct ieee80211_channel
*chan
;
557 if (local
->sta_sw_scanning
) {
558 chan
= local
->scan_channel
;
559 mode
= local
->scan_hw_mode
;
561 chan
= local
->oper_channel
;
562 mode
= local
->oper_hw_mode
;
565 local
->hw
.conf
.channel
= chan
->chan
;
566 local
->hw
.conf
.channel_val
= chan
->val
;
567 if (!local
->hw
.conf
.power_level
) {
568 local
->hw
.conf
.power_level
= chan
->power_level
;
570 local
->hw
.conf
.power_level
= min(chan
->power_level
,
571 local
->hw
.conf
.power_level
);
573 local
->hw
.conf
.freq
= chan
->freq
;
574 local
->hw
.conf
.phymode
= mode
->mode
;
575 local
->hw
.conf
.antenna_max
= chan
->antenna_max
;
576 local
->hw
.conf
.chan
= chan
;
577 local
->hw
.conf
.mode
= mode
;
579 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
580 printk(KERN_DEBUG
"HW CONFIG: channel=%d freq=%d "
581 "phymode=%d\n", local
->hw
.conf
.channel
, local
->hw
.conf
.freq
,
582 local
->hw
.conf
.phymode
);
583 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
585 if (local
->open_count
)
586 ret
= local
->ops
->config(local_to_hw(local
), &local
->hw
.conf
);
592 * ieee80211_hw_config_ht should be used only after legacy configuration
593 * has been determined, as ht configuration depends upon the hardware's
594 * HT abilities for a _specific_ band.
596 int ieee80211_hw_config_ht(struct ieee80211_local
*local
, int enable_ht
,
597 struct ieee80211_ht_info
*req_ht_cap
,
598 struct ieee80211_ht_bss_info
*req_bss_cap
)
600 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
601 struct ieee80211_hw_mode
*mode
= conf
->mode
;
604 /* HT is not supported */
605 if (!mode
->ht_info
.ht_supported
) {
606 conf
->flags
&= ~IEEE80211_CONF_SUPPORT_HT_MODE
;
612 conf
->flags
&= ~IEEE80211_CONF_SUPPORT_HT_MODE
;
614 conf
->flags
|= IEEE80211_CONF_SUPPORT_HT_MODE
;
615 conf
->ht_conf
.cap
= req_ht_cap
->cap
& mode
->ht_info
.cap
;
616 conf
->ht_conf
.cap
&= ~(IEEE80211_HT_CAP_MIMO_PS
);
618 mode
->ht_info
.cap
& IEEE80211_HT_CAP_MIMO_PS
;
619 conf
->ht_bss_conf
.primary_channel
=
620 req_bss_cap
->primary_channel
;
621 conf
->ht_bss_conf
.bss_cap
= req_bss_cap
->bss_cap
;
622 conf
->ht_bss_conf
.bss_op_mode
= req_bss_cap
->bss_op_mode
;
623 for (i
= 0; i
< SUPP_MCS_SET_LEN
; i
++)
624 conf
->ht_conf
.supp_mcs_set
[i
] =
625 mode
->ht_info
.supp_mcs_set
[i
] &
626 req_ht_cap
->supp_mcs_set
[i
];
628 /* In STA mode, this gives us indication
629 * to the AP's mode of operation */
630 conf
->ht_conf
.ht_supported
= 1;
631 conf
->ht_conf
.ampdu_factor
= req_ht_cap
->ampdu_factor
;
632 conf
->ht_conf
.ampdu_density
= req_ht_cap
->ampdu_density
;
635 local
->ops
->conf_ht(local_to_hw(local
), &local
->hw
.conf
);
640 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
643 struct ieee80211_local
*local
= sdata
->local
;
648 if (local
->ops
->bss_info_changed
)
649 local
->ops
->bss_info_changed(local_to_hw(local
),
655 void ieee80211_reset_erp_info(struct net_device
*dev
)
657 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
659 sdata
->bss_conf
.use_cts_prot
= 0;
660 sdata
->bss_conf
.use_short_preamble
= 0;
661 ieee80211_bss_info_change_notify(sdata
,
662 BSS_CHANGED_ERP_CTS_PROT
|
663 BSS_CHANGED_ERP_PREAMBLE
);
666 void ieee80211_tx_status_irqsafe(struct ieee80211_hw
*hw
,
668 struct ieee80211_tx_status
*status
)
670 struct ieee80211_local
*local
= hw_to_local(hw
);
671 struct ieee80211_tx_status
*saved
;
674 skb
->dev
= local
->mdev
;
675 saved
= kmalloc(sizeof(struct ieee80211_tx_status
), GFP_ATOMIC
);
676 if (unlikely(!saved
)) {
678 printk(KERN_WARNING
"%s: Not enough memory, "
679 "dropping tx status", skb
->dev
->name
);
680 /* should be dev_kfree_skb_irq, but due to this function being
681 * named _irqsafe instead of just _irq we can't be sure that
682 * people won't call it from non-irq contexts */
683 dev_kfree_skb_any(skb
);
686 memcpy(saved
, status
, sizeof(struct ieee80211_tx_status
));
687 /* copy pointer to saved status into skb->cb for use by tasklet */
688 memcpy(skb
->cb
, &saved
, sizeof(saved
));
690 skb
->pkt_type
= IEEE80211_TX_STATUS_MSG
;
691 skb_queue_tail(status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
?
692 &local
->skb_queue
: &local
->skb_queue_unreliable
, skb
);
693 tmp
= skb_queue_len(&local
->skb_queue
) +
694 skb_queue_len(&local
->skb_queue_unreliable
);
695 while (tmp
> IEEE80211_IRQSAFE_QUEUE_LIMIT
&&
696 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
697 memcpy(&saved
, skb
->cb
, sizeof(saved
));
699 dev_kfree_skb_irq(skb
);
701 I802_DEBUG_INC(local
->tx_status_drop
);
703 tasklet_schedule(&local
->tasklet
);
705 EXPORT_SYMBOL(ieee80211_tx_status_irqsafe
);
707 static void ieee80211_tasklet_handler(unsigned long data
)
709 struct ieee80211_local
*local
= (struct ieee80211_local
*) data
;
711 struct ieee80211_rx_status rx_status
;
712 struct ieee80211_tx_status
*tx_status
;
714 while ((skb
= skb_dequeue(&local
->skb_queue
)) ||
715 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
716 switch (skb
->pkt_type
) {
717 case IEEE80211_RX_MSG
:
718 /* status is in skb->cb */
719 memcpy(&rx_status
, skb
->cb
, sizeof(rx_status
));
720 /* Clear skb->pkt_type in order to not confuse kernel
723 __ieee80211_rx(local_to_hw(local
), skb
, &rx_status
);
725 case IEEE80211_TX_STATUS_MSG
:
726 /* get pointer to saved status out of skb->cb */
727 memcpy(&tx_status
, skb
->cb
, sizeof(tx_status
));
729 ieee80211_tx_status(local_to_hw(local
),
733 default: /* should never get here! */
734 printk(KERN_ERR
"%s: Unknown message type (%d)\n",
735 wiphy_name(local
->hw
.wiphy
), skb
->pkt_type
);
742 /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
743 * make a prepared TX frame (one that has been given to hw) to look like brand
744 * new IEEE 802.11 frame that is ready to go through TX processing again.
745 * Also, tx_packet_data in cb is restored from tx_control. */
746 static void ieee80211_remove_tx_extra(struct ieee80211_local
*local
,
747 struct ieee80211_key
*key
,
749 struct ieee80211_tx_control
*control
)
751 int hdrlen
, iv_len
, mic_len
;
752 struct ieee80211_tx_packet_data
*pkt_data
;
754 pkt_data
= (struct ieee80211_tx_packet_data
*)skb
->cb
;
755 pkt_data
->ifindex
= vif_to_sdata(control
->vif
)->dev
->ifindex
;
757 if (control
->flags
& IEEE80211_TXCTL_REQ_TX_STATUS
)
758 pkt_data
->flags
|= IEEE80211_TXPD_REQ_TX_STATUS
;
759 if (control
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
)
760 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
761 if (control
->flags
& IEEE80211_TXCTL_REQUEUE
)
762 pkt_data
->flags
|= IEEE80211_TXPD_REQUEUE
;
763 if (control
->flags
& IEEE80211_TXCTL_EAPOL_FRAME
)
764 pkt_data
->flags
|= IEEE80211_TXPD_EAPOL_FRAME
;
765 pkt_data
->queue
= control
->queue
;
767 hdrlen
= ieee80211_get_hdrlen_from_skb(skb
);
772 switch (key
->conf
.alg
) {
775 mic_len
= WEP_ICV_LEN
;
778 iv_len
= TKIP_IV_LEN
;
779 mic_len
= TKIP_ICV_LEN
;
782 iv_len
= CCMP_HDR_LEN
;
783 mic_len
= CCMP_MIC_LEN
;
789 if (skb
->len
>= mic_len
&&
790 !(key
->flags
& KEY_FLAG_UPLOADED_TO_HARDWARE
))
791 skb_trim(skb
, skb
->len
- mic_len
);
792 if (skb
->len
>= iv_len
&& skb
->len
> hdrlen
) {
793 memmove(skb
->data
+ iv_len
, skb
->data
, hdrlen
);
794 skb_pull(skb
, iv_len
);
799 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
800 u16 fc
= le16_to_cpu(hdr
->frame_control
);
801 if ((fc
& 0x8C) == 0x88) /* QoS Control Field */ {
802 fc
&= ~IEEE80211_STYPE_QOS_DATA
;
803 hdr
->frame_control
= cpu_to_le16(fc
);
804 memmove(skb
->data
+ 2, skb
->data
, hdrlen
- 2);
810 void ieee80211_tx_status(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
811 struct ieee80211_tx_status
*status
)
813 struct sk_buff
*skb2
;
814 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
815 struct ieee80211_local
*local
= hw_to_local(hw
);
817 struct ieee80211_tx_status_rtap_hdr
*rthdr
;
818 struct ieee80211_sub_if_data
*sdata
;
823 "%s: ieee80211_tx_status called with NULL status\n",
824 wiphy_name(local
->hw
.wiphy
));
829 if (status
->excessive_retries
) {
830 struct sta_info
*sta
;
831 sta
= sta_info_get(local
, hdr
->addr1
);
833 if (sta
->flags
& WLAN_STA_PS
) {
834 /* The STA is in power save mode, so assume
835 * that this TX packet failed because of that.
837 status
->excessive_retries
= 0;
838 status
->flags
|= IEEE80211_TX_STATUS_TX_FILTERED
;
844 if (status
->flags
& IEEE80211_TX_STATUS_TX_FILTERED
) {
845 struct sta_info
*sta
;
846 sta
= sta_info_get(local
, hdr
->addr1
);
848 sta
->tx_filtered_count
++;
850 /* Clear the TX filter mask for this STA when sending
851 * the next packet. If the STA went to power save mode,
852 * this will happen when it is waking up for the next
854 sta
->clear_dst_mask
= 1;
856 /* TODO: Is the WLAN_STA_PS flag always set here or is
857 * the race between RX and TX status causing some
858 * packets to be filtered out before 80211.o gets an
859 * update for PS status? This seems to be the case, so
860 * no changes are likely to be needed. */
861 if (sta
->flags
& WLAN_STA_PS
&&
862 skb_queue_len(&sta
->tx_filtered
) <
864 ieee80211_remove_tx_extra(local
, sta
->key
,
867 skb_queue_tail(&sta
->tx_filtered
, skb
);
868 } else if (!(sta
->flags
& WLAN_STA_PS
) &&
869 !(status
->control
.flags
& IEEE80211_TXCTL_REQUEUE
)) {
870 /* Software retry the packet once */
871 status
->control
.flags
|= IEEE80211_TXCTL_REQUEUE
;
872 ieee80211_remove_tx_extra(local
, sta
->key
,
877 if (net_ratelimit()) {
878 printk(KERN_DEBUG
"%s: dropped TX "
879 "filtered frame queue_len=%d "
881 wiphy_name(local
->hw
.wiphy
),
884 !!(sta
->flags
& WLAN_STA_PS
),
893 rate_control_tx_status(local
->mdev
, skb
, status
);
895 ieee80211_led_tx(local
, 0);
898 * Fragments are passed to low-level drivers as separate skbs, so these
899 * are actually fragments, not frames. Update frame counters only for
900 * the first fragment of the frame. */
902 frag
= le16_to_cpu(hdr
->seq_ctrl
) & IEEE80211_SCTL_FRAG
;
903 type
= le16_to_cpu(hdr
->frame_control
) & IEEE80211_FCTL_FTYPE
;
905 if (status
->flags
& IEEE80211_TX_STATUS_ACK
) {
907 local
->dot11TransmittedFrameCount
++;
908 if (is_multicast_ether_addr(hdr
->addr1
))
909 local
->dot11MulticastTransmittedFrameCount
++;
910 if (status
->retry_count
> 0)
911 local
->dot11RetryCount
++;
912 if (status
->retry_count
> 1)
913 local
->dot11MultipleRetryCount
++;
916 /* This counter shall be incremented for an acknowledged MPDU
917 * with an individual address in the address 1 field or an MPDU
918 * with a multicast address in the address 1 field of type Data
920 if (!is_multicast_ether_addr(hdr
->addr1
) ||
921 type
== IEEE80211_FTYPE_DATA
||
922 type
== IEEE80211_FTYPE_MGMT
)
923 local
->dot11TransmittedFragmentCount
++;
926 local
->dot11FailedCount
++;
929 /* this was a transmitted frame, but now we want to reuse it */
932 if (!local
->monitors
) {
937 /* send frame to monitor interfaces now */
939 if (skb_headroom(skb
) < sizeof(*rthdr
)) {
940 printk(KERN_ERR
"ieee80211_tx_status: headroom too small\n");
945 rthdr
= (struct ieee80211_tx_status_rtap_hdr
*)
946 skb_push(skb
, sizeof(*rthdr
));
948 memset(rthdr
, 0, sizeof(*rthdr
));
949 rthdr
->hdr
.it_len
= cpu_to_le16(sizeof(*rthdr
));
950 rthdr
->hdr
.it_present
=
951 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS
) |
952 (1 << IEEE80211_RADIOTAP_DATA_RETRIES
));
954 if (!(status
->flags
& IEEE80211_TX_STATUS_ACK
) &&
955 !is_multicast_ether_addr(hdr
->addr1
))
956 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL
);
958 if ((status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
) &&
959 (status
->control
.flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
))
960 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS
);
961 else if (status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
)
962 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS
);
964 rthdr
->data_retries
= status
->retry_count
;
967 monitors
= local
->monitors
;
968 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
970 * Using the monitors counter is possibly racy, but
971 * if the value is wrong we simply either clone the skb
972 * once too much or forget sending it to one monitor iface
973 * The latter case isn't nice but fixing the race is much
976 if (!monitors
|| !skb
)
979 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_MNTR
) {
980 if (!netif_running(sdata
->dev
))
984 skb2
= skb_clone(skb
, GFP_ATOMIC
);
987 skb
->dev
= sdata
->dev
;
988 /* XXX: is this sufficient for BPF? */
989 skb_set_mac_header(skb
, 0);
990 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
991 skb
->pkt_type
= PACKET_OTHERHOST
;
992 skb
->protocol
= htons(ETH_P_802_2
);
993 memset(skb
->cb
, 0, sizeof(skb
->cb
));
1003 EXPORT_SYMBOL(ieee80211_tx_status
);
1005 struct ieee80211_hw
*ieee80211_alloc_hw(size_t priv_data_len
,
1006 const struct ieee80211_ops
*ops
)
1008 struct net_device
*mdev
;
1009 struct ieee80211_local
*local
;
1010 struct ieee80211_sub_if_data
*sdata
;
1012 struct wiphy
*wiphy
;
1014 /* Ensure 32-byte alignment of our private data and hw private data.
1015 * We use the wiphy priv data for both our ieee80211_local and for
1016 * the driver's private data
1018 * In memory it'll be like this:
1020 * +-------------------------+
1022 * +-------------------------+
1023 * | struct ieee80211_local |
1024 * +-------------------------+
1025 * | driver's private data |
1026 * +-------------------------+
1029 priv_size
= ((sizeof(struct ieee80211_local
) +
1030 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
) +
1033 wiphy
= wiphy_new(&mac80211_config_ops
, priv_size
);
1038 wiphy
->privid
= mac80211_wiphy_privid
;
1040 local
= wiphy_priv(wiphy
);
1041 local
->hw
.wiphy
= wiphy
;
1043 local
->hw
.priv
= (char *)local
+
1044 ((sizeof(struct ieee80211_local
) +
1045 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
);
1048 BUG_ON(!ops
->start
);
1050 BUG_ON(!ops
->config
);
1051 BUG_ON(!ops
->add_interface
);
1052 BUG_ON(!ops
->remove_interface
);
1053 BUG_ON(!ops
->configure_filter
);
1056 /* for now, mdev needs sub_if_data :/ */
1057 mdev
= alloc_netdev(sizeof(struct ieee80211_sub_if_data
),
1058 "wmaster%d", ether_setup
);
1064 sdata
= IEEE80211_DEV_TO_SUB_IF(mdev
);
1065 mdev
->ieee80211_ptr
= &sdata
->wdev
;
1066 sdata
->wdev
.wiphy
= wiphy
;
1068 local
->hw
.queues
= 1; /* default */
1071 local
->rx_pre_handlers
= ieee80211_rx_pre_handlers
;
1072 local
->rx_handlers
= ieee80211_rx_handlers
;
1073 local
->tx_handlers
= ieee80211_tx_handlers
;
1075 local
->bridge_packets
= 1;
1077 local
->rts_threshold
= IEEE80211_MAX_RTS_THRESHOLD
;
1078 local
->fragmentation_threshold
= IEEE80211_MAX_FRAG_THRESHOLD
;
1079 local
->short_retry_limit
= 7;
1080 local
->long_retry_limit
= 4;
1081 local
->hw
.conf
.radio_enabled
= 1;
1083 local
->enabled_modes
= ~0;
1085 INIT_LIST_HEAD(&local
->modes_list
);
1087 INIT_LIST_HEAD(&local
->interfaces
);
1089 INIT_DELAYED_WORK(&local
->scan_work
, ieee80211_sta_scan_work
);
1090 ieee80211_rx_bss_list_init(mdev
);
1092 sta_info_init(local
);
1094 mdev
->hard_start_xmit
= ieee80211_master_start_xmit
;
1095 mdev
->open
= ieee80211_master_open
;
1096 mdev
->stop
= ieee80211_master_stop
;
1097 mdev
->type
= ARPHRD_IEEE80211
;
1098 mdev
->header_ops
= &ieee80211_header_ops
;
1099 mdev
->set_multicast_list
= ieee80211_master_set_multicast_list
;
1101 sdata
->vif
.type
= IEEE80211_IF_TYPE_AP
;
1103 sdata
->local
= local
;
1104 sdata
->u
.ap
.force_unicast_rateidx
= -1;
1105 sdata
->u
.ap
.max_ratectrl_rateidx
= -1;
1106 ieee80211_if_sdata_init(sdata
);
1107 /* no RCU needed since we're still during init phase */
1108 list_add_tail(&sdata
->list
, &local
->interfaces
);
1110 tasklet_init(&local
->tx_pending_tasklet
, ieee80211_tx_pending
,
1111 (unsigned long)local
);
1112 tasklet_disable(&local
->tx_pending_tasklet
);
1114 tasklet_init(&local
->tasklet
,
1115 ieee80211_tasklet_handler
,
1116 (unsigned long) local
);
1117 tasklet_disable(&local
->tasklet
);
1119 skb_queue_head_init(&local
->skb_queue
);
1120 skb_queue_head_init(&local
->skb_queue_unreliable
);
1122 return local_to_hw(local
);
1124 EXPORT_SYMBOL(ieee80211_alloc_hw
);
1126 int ieee80211_register_hw(struct ieee80211_hw
*hw
)
1128 struct ieee80211_local
*local
= hw_to_local(hw
);
1132 result
= wiphy_register(local
->hw
.wiphy
);
1136 name
= wiphy_dev(local
->hw
.wiphy
)->driver
->name
;
1137 local
->hw
.workqueue
= create_singlethread_workqueue(name
);
1138 if (!local
->hw
.workqueue
) {
1140 goto fail_workqueue
;
1144 * The hardware needs headroom for sending the frame,
1145 * and we need some headroom for passing the frame to monitor
1146 * interfaces, but never both at the same time.
1148 local
->tx_headroom
= max_t(unsigned int , local
->hw
.extra_tx_headroom
,
1149 sizeof(struct ieee80211_tx_status_rtap_hdr
));
1151 debugfs_hw_add(local
);
1153 local
->hw
.conf
.beacon_int
= 1000;
1155 local
->wstats_flags
|= local
->hw
.max_rssi
?
1156 IW_QUAL_LEVEL_UPDATED
: IW_QUAL_LEVEL_INVALID
;
1157 local
->wstats_flags
|= local
->hw
.max_signal
?
1158 IW_QUAL_QUAL_UPDATED
: IW_QUAL_QUAL_INVALID
;
1159 local
->wstats_flags
|= local
->hw
.max_noise
?
1160 IW_QUAL_NOISE_UPDATED
: IW_QUAL_NOISE_INVALID
;
1161 if (local
->hw
.max_rssi
< 0 || local
->hw
.max_noise
< 0)
1162 local
->wstats_flags
|= IW_QUAL_DBM
;
1164 result
= sta_info_start(local
);
1169 result
= dev_alloc_name(local
->mdev
, local
->mdev
->name
);
1173 memcpy(local
->mdev
->dev_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1174 SET_NETDEV_DEV(local
->mdev
, wiphy_dev(local
->hw
.wiphy
));
1176 result
= register_netdevice(local
->mdev
);
1180 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1181 ieee80211_if_set_type(local
->mdev
, IEEE80211_IF_TYPE_AP
);
1183 result
= ieee80211_init_rate_ctrl_alg(local
,
1184 hw
->rate_control_algorithm
);
1186 printk(KERN_DEBUG
"%s: Failed to initialize rate control "
1187 "algorithm\n", wiphy_name(local
->hw
.wiphy
));
1191 result
= ieee80211_wep_init(local
);
1194 printk(KERN_DEBUG
"%s: Failed to initialize wep\n",
1195 wiphy_name(local
->hw
.wiphy
));
1199 ieee80211_install_qdisc(local
->mdev
);
1201 /* add one default STA interface */
1202 result
= ieee80211_if_add(local
->mdev
, "wlan%d", NULL
,
1203 IEEE80211_IF_TYPE_STA
);
1205 printk(KERN_WARNING
"%s: Failed to add default virtual iface\n",
1206 wiphy_name(local
->hw
.wiphy
));
1208 local
->reg_state
= IEEE80211_DEV_REGISTERED
;
1211 ieee80211_led_init(local
);
1216 rate_control_deinitialize(local
);
1218 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1219 unregister_netdevice(local
->mdev
);
1222 sta_info_stop(local
);
1224 debugfs_hw_del(local
);
1225 destroy_workqueue(local
->hw
.workqueue
);
1227 wiphy_unregister(local
->hw
.wiphy
);
1230 EXPORT_SYMBOL(ieee80211_register_hw
);
1232 int ieee80211_register_hwmode(struct ieee80211_hw
*hw
,
1233 struct ieee80211_hw_mode
*mode
)
1235 struct ieee80211_local
*local
= hw_to_local(hw
);
1236 struct ieee80211_rate
*rate
;
1239 INIT_LIST_HEAD(&mode
->list
);
1240 list_add_tail(&mode
->list
, &local
->modes_list
);
1242 local
->hw_modes
|= (1 << mode
->mode
);
1243 for (i
= 0; i
< mode
->num_rates
; i
++) {
1244 rate
= &(mode
->rates
[i
]);
1245 rate
->rate_inv
= CHAN_UTIL_RATE_LCM
/ rate
->rate
;
1247 ieee80211_prepare_rates(local
, mode
);
1249 if (!local
->oper_hw_mode
) {
1250 /* Default to this mode */
1251 local
->hw
.conf
.phymode
= mode
->mode
;
1252 local
->oper_hw_mode
= local
->scan_hw_mode
= mode
;
1253 local
->oper_channel
= local
->scan_channel
= &mode
->channels
[0];
1254 local
->hw
.conf
.mode
= local
->oper_hw_mode
;
1255 local
->hw
.conf
.chan
= local
->oper_channel
;
1258 if (!(hw
->flags
& IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED
))
1259 ieee80211_set_default_regdomain(mode
);
1263 EXPORT_SYMBOL(ieee80211_register_hwmode
);
1265 void ieee80211_unregister_hw(struct ieee80211_hw
*hw
)
1267 struct ieee80211_local
*local
= hw_to_local(hw
);
1268 struct ieee80211_sub_if_data
*sdata
, *tmp
;
1271 tasklet_kill(&local
->tx_pending_tasklet
);
1272 tasklet_kill(&local
->tasklet
);
1276 BUG_ON(local
->reg_state
!= IEEE80211_DEV_REGISTERED
);
1278 local
->reg_state
= IEEE80211_DEV_UNREGISTERED
;
1281 * At this point, interface list manipulations are fine
1282 * because the driver cannot be handing us frames any
1283 * more and the tasklet is killed.
1287 * First, we remove all non-master interfaces. Do this because they
1288 * may have bss pointer dependency on the master, and when we free
1289 * the master these would be freed as well, breaking our list
1290 * iteration completely.
1292 list_for_each_entry_safe(sdata
, tmp
, &local
->interfaces
, list
) {
1293 if (sdata
->dev
== local
->mdev
)
1295 list_del(&sdata
->list
);
1296 __ieee80211_if_del(local
, sdata
);
1299 /* then, finally, remove the master interface */
1300 __ieee80211_if_del(local
, IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1304 ieee80211_rx_bss_list_deinit(local
->mdev
);
1305 ieee80211_clear_tx_pending(local
);
1306 sta_info_stop(local
);
1307 rate_control_deinitialize(local
);
1308 debugfs_hw_del(local
);
1310 for (i
= 0; i
< NUM_IEEE80211_MODES
; i
++) {
1311 kfree(local
->supp_rates
[i
]);
1312 kfree(local
->basic_rates
[i
]);
1315 if (skb_queue_len(&local
->skb_queue
)
1316 || skb_queue_len(&local
->skb_queue_unreliable
))
1317 printk(KERN_WARNING
"%s: skb_queue not empty\n",
1318 wiphy_name(local
->hw
.wiphy
));
1319 skb_queue_purge(&local
->skb_queue
);
1320 skb_queue_purge(&local
->skb_queue_unreliable
);
1322 destroy_workqueue(local
->hw
.workqueue
);
1323 wiphy_unregister(local
->hw
.wiphy
);
1324 ieee80211_wep_free(local
);
1325 ieee80211_led_exit(local
);
1327 EXPORT_SYMBOL(ieee80211_unregister_hw
);
1329 void ieee80211_free_hw(struct ieee80211_hw
*hw
)
1331 struct ieee80211_local
*local
= hw_to_local(hw
);
1333 ieee80211_if_free(local
->mdev
);
1334 wiphy_free(local
->hw
.wiphy
);
1336 EXPORT_SYMBOL(ieee80211_free_hw
);
1338 static int __init
ieee80211_init(void)
1340 struct sk_buff
*skb
;
1343 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data
) > sizeof(skb
->cb
));
1345 ret
= rc80211_simple_init();
1349 ret
= rc80211_pid_init();
1353 ret
= ieee80211_wme_register();
1355 printk(KERN_DEBUG
"ieee80211_init: failed to "
1356 "initialize WME (err=%d)\n", ret
);
1360 ieee80211_debugfs_netdev_init();
1361 ieee80211_regdomain_init();
1366 rc80211_simple_exit();
1373 static void __exit
ieee80211_exit(void)
1375 rc80211_simple_exit();
1378 ieee80211_wme_unregister();
1379 ieee80211_debugfs_netdev_exit();
1383 subsys_initcall(ieee80211_init
);
1384 module_exit(ieee80211_exit
);
1386 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1387 MODULE_LICENSE("GPL");