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
) {
302 for (i
= 0; i
< STA_TID_NUM
; i
++)
303 ieee80211_sta_stop_rx_ba_session(sta
->dev
, sta
->addr
,
304 i
, WLAN_BACK_RECIPIENT
,
305 WLAN_REASON_QSTA_LEAVE_QBSS
);
308 netif_stop_queue(dev
);
311 * Don't count this interface for promisc/allmulti while it
312 * is down. dev_mc_unsync() will invoke set_multicast_list
313 * on the master interface which will sync these down to the
314 * hardware as filter flags.
316 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
317 atomic_dec(&local
->iff_allmultis
);
319 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
320 atomic_dec(&local
->iff_promiscs
);
322 dev_mc_unsync(local
->mdev
, dev
);
324 /* down all dependent devices, that is VLANs */
325 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
) {
326 struct ieee80211_sub_if_data
*vlan
, *tmp
;
328 list_for_each_entry_safe(vlan
, tmp
, &sdata
->u
.ap
.vlans
,
330 dev_close(vlan
->dev
);
331 WARN_ON(!list_empty(&sdata
->u
.ap
.vlans
));
336 switch (sdata
->vif
.type
) {
337 case IEEE80211_IF_TYPE_VLAN
:
338 list_del(&sdata
->u
.vlan
.list
);
339 sdata
->u
.vlan
.ap
= NULL
;
340 /* no need to tell driver */
342 case IEEE80211_IF_TYPE_MNTR
:
344 if (local
->monitors
== 0) {
345 netif_tx_lock_bh(local
->mdev
);
346 ieee80211_configure_filter(local
);
347 netif_tx_unlock_bh(local
->mdev
);
349 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_RADIOTAP
;
352 case IEEE80211_IF_TYPE_STA
:
353 case IEEE80211_IF_TYPE_IBSS
:
354 sdata
->u
.sta
.state
= IEEE80211_DISABLED
;
355 del_timer_sync(&sdata
->u
.sta
.timer
);
357 * When we get here, the interface is marked down.
358 * Call synchronize_rcu() to wait for the RX path
359 * should it be using the interface and enqueuing
360 * frames at this very time on another CPU.
363 skb_queue_purge(&sdata
->u
.sta
.skb_queue
);
365 if (local
->scan_dev
== sdata
->dev
) {
366 if (!local
->ops
->hw_scan
) {
367 local
->sta_sw_scanning
= 0;
368 cancel_delayed_work(&local
->scan_work
);
370 local
->sta_hw_scanning
= 0;
373 flush_workqueue(local
->hw
.workqueue
);
375 sdata
->u
.sta
.flags
&= ~IEEE80211_STA_PRIVACY_INVOKED
;
376 kfree(sdata
->u
.sta
.extra_ie
);
377 sdata
->u
.sta
.extra_ie
= NULL
;
378 sdata
->u
.sta
.extra_ie_len
= 0;
381 conf
.vif
= &sdata
->vif
;
382 conf
.type
= sdata
->vif
.type
;
383 conf
.mac_addr
= dev
->dev_addr
;
384 /* disable all keys for as long as this netdev is down */
385 ieee80211_disable_keys(sdata
);
386 local
->ops
->remove_interface(local_to_hw(local
), &conf
);
389 if (local
->open_count
== 0) {
390 if (netif_running(local
->mdev
))
391 dev_close(local
->mdev
);
393 if (local
->ops
->stop
)
394 local
->ops
->stop(local_to_hw(local
));
396 ieee80211_led_radio(local
, 0);
398 tasklet_disable(&local
->tx_pending_tasklet
);
399 tasklet_disable(&local
->tasklet
);
405 static void ieee80211_set_multicast_list(struct net_device
*dev
)
407 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
408 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
409 int allmulti
, promisc
, sdata_allmulti
, sdata_promisc
;
411 allmulti
= !!(dev
->flags
& IFF_ALLMULTI
);
412 promisc
= !!(dev
->flags
& IFF_PROMISC
);
413 sdata_allmulti
= !!(sdata
->flags
& IEEE80211_SDATA_ALLMULTI
);
414 sdata_promisc
= !!(sdata
->flags
& IEEE80211_SDATA_PROMISC
);
416 if (allmulti
!= sdata_allmulti
) {
417 if (dev
->flags
& IFF_ALLMULTI
)
418 atomic_inc(&local
->iff_allmultis
);
420 atomic_dec(&local
->iff_allmultis
);
421 sdata
->flags
^= IEEE80211_SDATA_ALLMULTI
;
424 if (promisc
!= sdata_promisc
) {
425 if (dev
->flags
& IFF_PROMISC
)
426 atomic_inc(&local
->iff_promiscs
);
428 atomic_dec(&local
->iff_promiscs
);
429 sdata
->flags
^= IEEE80211_SDATA_PROMISC
;
432 dev_mc_sync(local
->mdev
, dev
);
435 static const struct header_ops ieee80211_header_ops
= {
436 .create
= eth_header
,
437 .parse
= header_parse_80211
,
438 .rebuild
= eth_rebuild_header
,
439 .cache
= eth_header_cache
,
440 .cache_update
= eth_header_cache_update
,
443 /* Must not be called for mdev */
444 void ieee80211_if_setup(struct net_device
*dev
)
447 dev
->hard_start_xmit
= ieee80211_subif_start_xmit
;
448 dev
->wireless_handlers
= &ieee80211_iw_handler_def
;
449 dev
->set_multicast_list
= ieee80211_set_multicast_list
;
450 dev
->change_mtu
= ieee80211_change_mtu
;
451 dev
->open
= ieee80211_open
;
452 dev
->stop
= ieee80211_stop
;
453 dev
->destructor
= ieee80211_if_free
;
456 /* WDS specialties */
458 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
)
460 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
461 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
462 struct sta_info
*sta
;
463 DECLARE_MAC_BUF(mac
);
465 if (compare_ether_addr(remote_addr
, sdata
->u
.wds
.remote_addr
) == 0)
468 /* Create STA entry for the new peer */
469 sta
= sta_info_add(local
, dev
, remote_addr
, GFP_KERNEL
);
474 /* Remove STA entry for the old peer */
475 sta
= sta_info_get(local
, sdata
->u
.wds
.remote_addr
);
480 printk(KERN_DEBUG
"%s: could not find STA entry for WDS link "
482 dev
->name
, print_mac(mac
, sdata
->u
.wds
.remote_addr
));
485 /* Update WDS link data */
486 memcpy(&sdata
->u
.wds
.remote_addr
, remote_addr
, ETH_ALEN
);
491 /* everything else */
493 static int __ieee80211_if_config(struct net_device
*dev
,
494 struct sk_buff
*beacon
,
495 struct ieee80211_tx_control
*control
)
497 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
498 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
499 struct ieee80211_if_conf conf
;
501 if (!local
->ops
->config_interface
|| !netif_running(dev
))
504 memset(&conf
, 0, sizeof(conf
));
505 conf
.type
= sdata
->vif
.type
;
506 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
||
507 sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
508 conf
.bssid
= sdata
->u
.sta
.bssid
;
509 conf
.ssid
= sdata
->u
.sta
.ssid
;
510 conf
.ssid_len
= sdata
->u
.sta
.ssid_len
;
511 } else if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
) {
512 conf
.ssid
= sdata
->u
.ap
.ssid
;
513 conf
.ssid_len
= sdata
->u
.ap
.ssid_len
;
514 conf
.beacon
= beacon
;
515 conf
.beacon_control
= control
;
517 return local
->ops
->config_interface(local_to_hw(local
),
521 int ieee80211_if_config(struct net_device
*dev
)
523 return __ieee80211_if_config(dev
, NULL
, NULL
);
526 int ieee80211_if_config_beacon(struct net_device
*dev
)
528 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
529 struct ieee80211_tx_control control
;
530 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
533 if (!(local
->hw
.flags
& IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
))
535 skb
= ieee80211_beacon_get(local_to_hw(local
), &sdata
->vif
,
539 return __ieee80211_if_config(dev
, skb
, &control
);
542 int ieee80211_hw_config(struct ieee80211_local
*local
)
544 struct ieee80211_hw_mode
*mode
;
545 struct ieee80211_channel
*chan
;
548 if (local
->sta_sw_scanning
) {
549 chan
= local
->scan_channel
;
550 mode
= local
->scan_hw_mode
;
552 chan
= local
->oper_channel
;
553 mode
= local
->oper_hw_mode
;
556 local
->hw
.conf
.channel
= chan
->chan
;
557 local
->hw
.conf
.channel_val
= chan
->val
;
558 if (!local
->hw
.conf
.power_level
) {
559 local
->hw
.conf
.power_level
= chan
->power_level
;
561 local
->hw
.conf
.power_level
= min(chan
->power_level
,
562 local
->hw
.conf
.power_level
);
564 local
->hw
.conf
.freq
= chan
->freq
;
565 local
->hw
.conf
.phymode
= mode
->mode
;
566 local
->hw
.conf
.antenna_max
= chan
->antenna_max
;
567 local
->hw
.conf
.chan
= chan
;
568 local
->hw
.conf
.mode
= mode
;
570 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
571 printk(KERN_DEBUG
"HW CONFIG: channel=%d freq=%d "
572 "phymode=%d\n", local
->hw
.conf
.channel
, local
->hw
.conf
.freq
,
573 local
->hw
.conf
.phymode
);
574 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
576 if (local
->open_count
)
577 ret
= local
->ops
->config(local_to_hw(local
), &local
->hw
.conf
);
583 * ieee80211_hw_config_ht should be used only after legacy configuration
584 * has been determined, as ht configuration depends upon the hardware's
585 * HT abilities for a _specific_ band.
587 int ieee80211_hw_config_ht(struct ieee80211_local
*local
, int enable_ht
,
588 struct ieee80211_ht_info
*req_ht_cap
,
589 struct ieee80211_ht_bss_info
*req_bss_cap
)
591 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
592 struct ieee80211_hw_mode
*mode
= conf
->mode
;
595 /* HT is not supported */
596 if (!mode
->ht_info
.ht_supported
) {
597 conf
->flags
&= ~IEEE80211_CONF_SUPPORT_HT_MODE
;
603 conf
->flags
&= ~IEEE80211_CONF_SUPPORT_HT_MODE
;
605 conf
->flags
|= IEEE80211_CONF_SUPPORT_HT_MODE
;
606 conf
->ht_conf
.cap
= req_ht_cap
->cap
& mode
->ht_info
.cap
;
607 conf
->ht_conf
.cap
&= ~(IEEE80211_HT_CAP_MIMO_PS
);
609 mode
->ht_info
.cap
& IEEE80211_HT_CAP_MIMO_PS
;
610 conf
->ht_bss_conf
.primary_channel
=
611 req_bss_cap
->primary_channel
;
612 conf
->ht_bss_conf
.bss_cap
= req_bss_cap
->bss_cap
;
613 conf
->ht_bss_conf
.bss_op_mode
= req_bss_cap
->bss_op_mode
;
614 for (i
= 0; i
< SUPP_MCS_SET_LEN
; i
++)
615 conf
->ht_conf
.supp_mcs_set
[i
] =
616 mode
->ht_info
.supp_mcs_set
[i
] &
617 req_ht_cap
->supp_mcs_set
[i
];
619 /* In STA mode, this gives us indication
620 * to the AP's mode of operation */
621 conf
->ht_conf
.ht_supported
= 1;
622 conf
->ht_conf
.ampdu_factor
= req_ht_cap
->ampdu_factor
;
623 conf
->ht_conf
.ampdu_density
= req_ht_cap
->ampdu_density
;
626 local
->ops
->conf_ht(local_to_hw(local
), &local
->hw
.conf
);
631 void ieee80211_erp_info_change_notify(struct net_device
*dev
, u8 changes
)
633 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
634 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
635 if (local
->ops
->erp_ie_changed
)
636 local
->ops
->erp_ie_changed(local_to_hw(local
), changes
,
637 !!(sdata
->flags
& IEEE80211_SDATA_USE_PROTECTION
),
638 !(sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
));
641 void ieee80211_reset_erp_info(struct net_device
*dev
)
643 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
645 sdata
->flags
&= ~(IEEE80211_SDATA_USE_PROTECTION
|
646 IEEE80211_SDATA_SHORT_PREAMBLE
);
647 ieee80211_erp_info_change_notify(dev
,
648 IEEE80211_ERP_CHANGE_PROTECTION
|
649 IEEE80211_ERP_CHANGE_PREAMBLE
);
652 void ieee80211_tx_status_irqsafe(struct ieee80211_hw
*hw
,
654 struct ieee80211_tx_status
*status
)
656 struct ieee80211_local
*local
= hw_to_local(hw
);
657 struct ieee80211_tx_status
*saved
;
660 skb
->dev
= local
->mdev
;
661 saved
= kmalloc(sizeof(struct ieee80211_tx_status
), GFP_ATOMIC
);
662 if (unlikely(!saved
)) {
664 printk(KERN_WARNING
"%s: Not enough memory, "
665 "dropping tx status", skb
->dev
->name
);
666 /* should be dev_kfree_skb_irq, but due to this function being
667 * named _irqsafe instead of just _irq we can't be sure that
668 * people won't call it from non-irq contexts */
669 dev_kfree_skb_any(skb
);
672 memcpy(saved
, status
, sizeof(struct ieee80211_tx_status
));
673 /* copy pointer to saved status into skb->cb for use by tasklet */
674 memcpy(skb
->cb
, &saved
, sizeof(saved
));
676 skb
->pkt_type
= IEEE80211_TX_STATUS_MSG
;
677 skb_queue_tail(status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
?
678 &local
->skb_queue
: &local
->skb_queue_unreliable
, skb
);
679 tmp
= skb_queue_len(&local
->skb_queue
) +
680 skb_queue_len(&local
->skb_queue_unreliable
);
681 while (tmp
> IEEE80211_IRQSAFE_QUEUE_LIMIT
&&
682 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
683 memcpy(&saved
, skb
->cb
, sizeof(saved
));
685 dev_kfree_skb_irq(skb
);
687 I802_DEBUG_INC(local
->tx_status_drop
);
689 tasklet_schedule(&local
->tasklet
);
691 EXPORT_SYMBOL(ieee80211_tx_status_irqsafe
);
693 static void ieee80211_tasklet_handler(unsigned long data
)
695 struct ieee80211_local
*local
= (struct ieee80211_local
*) data
;
697 struct ieee80211_rx_status rx_status
;
698 struct ieee80211_tx_status
*tx_status
;
700 while ((skb
= skb_dequeue(&local
->skb_queue
)) ||
701 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
702 switch (skb
->pkt_type
) {
703 case IEEE80211_RX_MSG
:
704 /* status is in skb->cb */
705 memcpy(&rx_status
, skb
->cb
, sizeof(rx_status
));
706 /* Clear skb->pkt_type in order to not confuse kernel
709 __ieee80211_rx(local_to_hw(local
), skb
, &rx_status
);
711 case IEEE80211_TX_STATUS_MSG
:
712 /* get pointer to saved status out of skb->cb */
713 memcpy(&tx_status
, skb
->cb
, sizeof(tx_status
));
715 ieee80211_tx_status(local_to_hw(local
),
719 default: /* should never get here! */
720 printk(KERN_ERR
"%s: Unknown message type (%d)\n",
721 wiphy_name(local
->hw
.wiphy
), skb
->pkt_type
);
728 /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
729 * make a prepared TX frame (one that has been given to hw) to look like brand
730 * new IEEE 802.11 frame that is ready to go through TX processing again.
731 * Also, tx_packet_data in cb is restored from tx_control. */
732 static void ieee80211_remove_tx_extra(struct ieee80211_local
*local
,
733 struct ieee80211_key
*key
,
735 struct ieee80211_tx_control
*control
)
737 int hdrlen
, iv_len
, mic_len
;
738 struct ieee80211_tx_packet_data
*pkt_data
;
740 pkt_data
= (struct ieee80211_tx_packet_data
*)skb
->cb
;
741 pkt_data
->ifindex
= vif_to_sdata(control
->vif
)->dev
->ifindex
;
743 if (control
->flags
& IEEE80211_TXCTL_REQ_TX_STATUS
)
744 pkt_data
->flags
|= IEEE80211_TXPD_REQ_TX_STATUS
;
745 if (control
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
)
746 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
747 if (control
->flags
& IEEE80211_TXCTL_REQUEUE
)
748 pkt_data
->flags
|= IEEE80211_TXPD_REQUEUE
;
749 if (control
->flags
& IEEE80211_TXCTL_EAPOL_FRAME
)
750 pkt_data
->flags
|= IEEE80211_TXPD_EAPOL_FRAME
;
751 pkt_data
->queue
= control
->queue
;
753 hdrlen
= ieee80211_get_hdrlen_from_skb(skb
);
758 switch (key
->conf
.alg
) {
761 mic_len
= WEP_ICV_LEN
;
764 iv_len
= TKIP_IV_LEN
;
765 mic_len
= TKIP_ICV_LEN
;
768 iv_len
= CCMP_HDR_LEN
;
769 mic_len
= CCMP_MIC_LEN
;
775 if (skb
->len
>= mic_len
&&
776 !(key
->flags
& KEY_FLAG_UPLOADED_TO_HARDWARE
))
777 skb_trim(skb
, skb
->len
- mic_len
);
778 if (skb
->len
>= iv_len
&& skb
->len
> hdrlen
) {
779 memmove(skb
->data
+ iv_len
, skb
->data
, hdrlen
);
780 skb_pull(skb
, iv_len
);
785 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
786 u16 fc
= le16_to_cpu(hdr
->frame_control
);
787 if ((fc
& 0x8C) == 0x88) /* QoS Control Field */ {
788 fc
&= ~IEEE80211_STYPE_QOS_DATA
;
789 hdr
->frame_control
= cpu_to_le16(fc
);
790 memmove(skb
->data
+ 2, skb
->data
, hdrlen
- 2);
796 void ieee80211_tx_status(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
797 struct ieee80211_tx_status
*status
)
799 struct sk_buff
*skb2
;
800 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
801 struct ieee80211_local
*local
= hw_to_local(hw
);
803 struct ieee80211_tx_status_rtap_hdr
*rthdr
;
804 struct ieee80211_sub_if_data
*sdata
;
809 "%s: ieee80211_tx_status called with NULL status\n",
810 wiphy_name(local
->hw
.wiphy
));
815 if (status
->excessive_retries
) {
816 struct sta_info
*sta
;
817 sta
= sta_info_get(local
, hdr
->addr1
);
819 if (sta
->flags
& WLAN_STA_PS
) {
820 /* The STA is in power save mode, so assume
821 * that this TX packet failed because of that.
823 status
->excessive_retries
= 0;
824 status
->flags
|= IEEE80211_TX_STATUS_TX_FILTERED
;
830 if (status
->flags
& IEEE80211_TX_STATUS_TX_FILTERED
) {
831 struct sta_info
*sta
;
832 sta
= sta_info_get(local
, hdr
->addr1
);
834 sta
->tx_filtered_count
++;
836 /* Clear the TX filter mask for this STA when sending
837 * the next packet. If the STA went to power save mode,
838 * this will happen when it is waking up for the next
840 sta
->clear_dst_mask
= 1;
842 /* TODO: Is the WLAN_STA_PS flag always set here or is
843 * the race between RX and TX status causing some
844 * packets to be filtered out before 80211.o gets an
845 * update for PS status? This seems to be the case, so
846 * no changes are likely to be needed. */
847 if (sta
->flags
& WLAN_STA_PS
&&
848 skb_queue_len(&sta
->tx_filtered
) <
850 ieee80211_remove_tx_extra(local
, sta
->key
,
853 skb_queue_tail(&sta
->tx_filtered
, skb
);
854 } else if (!(sta
->flags
& WLAN_STA_PS
) &&
855 !(status
->control
.flags
& IEEE80211_TXCTL_REQUEUE
)) {
856 /* Software retry the packet once */
857 status
->control
.flags
|= IEEE80211_TXCTL_REQUEUE
;
858 ieee80211_remove_tx_extra(local
, sta
->key
,
863 if (net_ratelimit()) {
864 printk(KERN_DEBUG
"%s: dropped TX "
865 "filtered frame queue_len=%d "
867 wiphy_name(local
->hw
.wiphy
),
870 !!(sta
->flags
& WLAN_STA_PS
),
879 rate_control_tx_status(local
->mdev
, skb
, status
);
881 ieee80211_led_tx(local
, 0);
884 * Fragments are passed to low-level drivers as separate skbs, so these
885 * are actually fragments, not frames. Update frame counters only for
886 * the first fragment of the frame. */
888 frag
= le16_to_cpu(hdr
->seq_ctrl
) & IEEE80211_SCTL_FRAG
;
889 type
= le16_to_cpu(hdr
->frame_control
) & IEEE80211_FCTL_FTYPE
;
891 if (status
->flags
& IEEE80211_TX_STATUS_ACK
) {
893 local
->dot11TransmittedFrameCount
++;
894 if (is_multicast_ether_addr(hdr
->addr1
))
895 local
->dot11MulticastTransmittedFrameCount
++;
896 if (status
->retry_count
> 0)
897 local
->dot11RetryCount
++;
898 if (status
->retry_count
> 1)
899 local
->dot11MultipleRetryCount
++;
902 /* This counter shall be incremented for an acknowledged MPDU
903 * with an individual address in the address 1 field or an MPDU
904 * with a multicast address in the address 1 field of type Data
906 if (!is_multicast_ether_addr(hdr
->addr1
) ||
907 type
== IEEE80211_FTYPE_DATA
||
908 type
== IEEE80211_FTYPE_MGMT
)
909 local
->dot11TransmittedFragmentCount
++;
912 local
->dot11FailedCount
++;
915 /* this was a transmitted frame, but now we want to reuse it */
918 if (!local
->monitors
) {
923 /* send frame to monitor interfaces now */
925 if (skb_headroom(skb
) < sizeof(*rthdr
)) {
926 printk(KERN_ERR
"ieee80211_tx_status: headroom too small\n");
931 rthdr
= (struct ieee80211_tx_status_rtap_hdr
*)
932 skb_push(skb
, sizeof(*rthdr
));
934 memset(rthdr
, 0, sizeof(*rthdr
));
935 rthdr
->hdr
.it_len
= cpu_to_le16(sizeof(*rthdr
));
936 rthdr
->hdr
.it_present
=
937 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS
) |
938 (1 << IEEE80211_RADIOTAP_DATA_RETRIES
));
940 if (!(status
->flags
& IEEE80211_TX_STATUS_ACK
) &&
941 !is_multicast_ether_addr(hdr
->addr1
))
942 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL
);
944 if ((status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
) &&
945 (status
->control
.flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
))
946 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS
);
947 else if (status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
)
948 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS
);
950 rthdr
->data_retries
= status
->retry_count
;
953 monitors
= local
->monitors
;
954 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
956 * Using the monitors counter is possibly racy, but
957 * if the value is wrong we simply either clone the skb
958 * once too much or forget sending it to one monitor iface
959 * The latter case isn't nice but fixing the race is much
962 if (!monitors
|| !skb
)
965 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_MNTR
) {
966 if (!netif_running(sdata
->dev
))
970 skb2
= skb_clone(skb
, GFP_ATOMIC
);
973 skb
->dev
= sdata
->dev
;
974 /* XXX: is this sufficient for BPF? */
975 skb_set_mac_header(skb
, 0);
976 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
977 skb
->pkt_type
= PACKET_OTHERHOST
;
978 skb
->protocol
= htons(ETH_P_802_2
);
979 memset(skb
->cb
, 0, sizeof(skb
->cb
));
989 EXPORT_SYMBOL(ieee80211_tx_status
);
991 struct ieee80211_hw
*ieee80211_alloc_hw(size_t priv_data_len
,
992 const struct ieee80211_ops
*ops
)
994 struct net_device
*mdev
;
995 struct ieee80211_local
*local
;
996 struct ieee80211_sub_if_data
*sdata
;
1000 /* Ensure 32-byte alignment of our private data and hw private data.
1001 * We use the wiphy priv data for both our ieee80211_local and for
1002 * the driver's private data
1004 * In memory it'll be like this:
1006 * +-------------------------+
1008 * +-------------------------+
1009 * | struct ieee80211_local |
1010 * +-------------------------+
1011 * | driver's private data |
1012 * +-------------------------+
1015 priv_size
= ((sizeof(struct ieee80211_local
) +
1016 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
) +
1019 wiphy
= wiphy_new(&mac80211_config_ops
, priv_size
);
1024 wiphy
->privid
= mac80211_wiphy_privid
;
1026 local
= wiphy_priv(wiphy
);
1027 local
->hw
.wiphy
= wiphy
;
1029 local
->hw
.priv
= (char *)local
+
1030 ((sizeof(struct ieee80211_local
) +
1031 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
);
1034 BUG_ON(!ops
->start
);
1036 BUG_ON(!ops
->config
);
1037 BUG_ON(!ops
->add_interface
);
1038 BUG_ON(!ops
->remove_interface
);
1039 BUG_ON(!ops
->configure_filter
);
1042 /* for now, mdev needs sub_if_data :/ */
1043 mdev
= alloc_netdev(sizeof(struct ieee80211_sub_if_data
),
1044 "wmaster%d", ether_setup
);
1050 sdata
= IEEE80211_DEV_TO_SUB_IF(mdev
);
1051 mdev
->ieee80211_ptr
= &sdata
->wdev
;
1052 sdata
->wdev
.wiphy
= wiphy
;
1054 local
->hw
.queues
= 1; /* default */
1057 local
->rx_pre_handlers
= ieee80211_rx_pre_handlers
;
1058 local
->rx_handlers
= ieee80211_rx_handlers
;
1059 local
->tx_handlers
= ieee80211_tx_handlers
;
1061 local
->bridge_packets
= 1;
1063 local
->rts_threshold
= IEEE80211_MAX_RTS_THRESHOLD
;
1064 local
->fragmentation_threshold
= IEEE80211_MAX_FRAG_THRESHOLD
;
1065 local
->short_retry_limit
= 7;
1066 local
->long_retry_limit
= 4;
1067 local
->hw
.conf
.radio_enabled
= 1;
1069 local
->enabled_modes
= ~0;
1071 INIT_LIST_HEAD(&local
->modes_list
);
1073 INIT_LIST_HEAD(&local
->interfaces
);
1075 INIT_DELAYED_WORK(&local
->scan_work
, ieee80211_sta_scan_work
);
1076 ieee80211_rx_bss_list_init(mdev
);
1078 sta_info_init(local
);
1080 mdev
->hard_start_xmit
= ieee80211_master_start_xmit
;
1081 mdev
->open
= ieee80211_master_open
;
1082 mdev
->stop
= ieee80211_master_stop
;
1083 mdev
->type
= ARPHRD_IEEE80211
;
1084 mdev
->header_ops
= &ieee80211_header_ops
;
1085 mdev
->set_multicast_list
= ieee80211_master_set_multicast_list
;
1087 sdata
->vif
.type
= IEEE80211_IF_TYPE_AP
;
1089 sdata
->local
= local
;
1090 sdata
->u
.ap
.force_unicast_rateidx
= -1;
1091 sdata
->u
.ap
.max_ratectrl_rateidx
= -1;
1092 ieee80211_if_sdata_init(sdata
);
1093 /* no RCU needed since we're still during init phase */
1094 list_add_tail(&sdata
->list
, &local
->interfaces
);
1096 tasklet_init(&local
->tx_pending_tasklet
, ieee80211_tx_pending
,
1097 (unsigned long)local
);
1098 tasklet_disable(&local
->tx_pending_tasklet
);
1100 tasklet_init(&local
->tasklet
,
1101 ieee80211_tasklet_handler
,
1102 (unsigned long) local
);
1103 tasklet_disable(&local
->tasklet
);
1105 skb_queue_head_init(&local
->skb_queue
);
1106 skb_queue_head_init(&local
->skb_queue_unreliable
);
1108 return local_to_hw(local
);
1110 EXPORT_SYMBOL(ieee80211_alloc_hw
);
1112 int ieee80211_register_hw(struct ieee80211_hw
*hw
)
1114 struct ieee80211_local
*local
= hw_to_local(hw
);
1118 result
= wiphy_register(local
->hw
.wiphy
);
1122 name
= wiphy_dev(local
->hw
.wiphy
)->driver
->name
;
1123 local
->hw
.workqueue
= create_singlethread_workqueue(name
);
1124 if (!local
->hw
.workqueue
) {
1126 goto fail_workqueue
;
1130 * The hardware needs headroom for sending the frame,
1131 * and we need some headroom for passing the frame to monitor
1132 * interfaces, but never both at the same time.
1134 local
->tx_headroom
= max_t(unsigned int , local
->hw
.extra_tx_headroom
,
1135 sizeof(struct ieee80211_tx_status_rtap_hdr
));
1137 debugfs_hw_add(local
);
1139 local
->hw
.conf
.beacon_int
= 1000;
1141 local
->wstats_flags
|= local
->hw
.max_rssi
?
1142 IW_QUAL_LEVEL_UPDATED
: IW_QUAL_LEVEL_INVALID
;
1143 local
->wstats_flags
|= local
->hw
.max_signal
?
1144 IW_QUAL_QUAL_UPDATED
: IW_QUAL_QUAL_INVALID
;
1145 local
->wstats_flags
|= local
->hw
.max_noise
?
1146 IW_QUAL_NOISE_UPDATED
: IW_QUAL_NOISE_INVALID
;
1147 if (local
->hw
.max_rssi
< 0 || local
->hw
.max_noise
< 0)
1148 local
->wstats_flags
|= IW_QUAL_DBM
;
1150 result
= sta_info_start(local
);
1155 result
= dev_alloc_name(local
->mdev
, local
->mdev
->name
);
1159 memcpy(local
->mdev
->dev_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1160 SET_NETDEV_DEV(local
->mdev
, wiphy_dev(local
->hw
.wiphy
));
1162 result
= register_netdevice(local
->mdev
);
1166 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1167 ieee80211_if_set_type(local
->mdev
, IEEE80211_IF_TYPE_AP
);
1169 result
= ieee80211_init_rate_ctrl_alg(local
,
1170 hw
->rate_control_algorithm
);
1172 printk(KERN_DEBUG
"%s: Failed to initialize rate control "
1173 "algorithm\n", wiphy_name(local
->hw
.wiphy
));
1177 result
= ieee80211_wep_init(local
);
1180 printk(KERN_DEBUG
"%s: Failed to initialize wep\n",
1181 wiphy_name(local
->hw
.wiphy
));
1185 ieee80211_install_qdisc(local
->mdev
);
1187 /* add one default STA interface */
1188 result
= ieee80211_if_add(local
->mdev
, "wlan%d", NULL
,
1189 IEEE80211_IF_TYPE_STA
);
1191 printk(KERN_WARNING
"%s: Failed to add default virtual iface\n",
1192 wiphy_name(local
->hw
.wiphy
));
1194 local
->reg_state
= IEEE80211_DEV_REGISTERED
;
1197 ieee80211_led_init(local
);
1202 rate_control_deinitialize(local
);
1204 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1205 unregister_netdevice(local
->mdev
);
1208 sta_info_stop(local
);
1210 debugfs_hw_del(local
);
1211 destroy_workqueue(local
->hw
.workqueue
);
1213 wiphy_unregister(local
->hw
.wiphy
);
1216 EXPORT_SYMBOL(ieee80211_register_hw
);
1218 int ieee80211_register_hwmode(struct ieee80211_hw
*hw
,
1219 struct ieee80211_hw_mode
*mode
)
1221 struct ieee80211_local
*local
= hw_to_local(hw
);
1222 struct ieee80211_rate
*rate
;
1225 INIT_LIST_HEAD(&mode
->list
);
1226 list_add_tail(&mode
->list
, &local
->modes_list
);
1228 local
->hw_modes
|= (1 << mode
->mode
);
1229 for (i
= 0; i
< mode
->num_rates
; i
++) {
1230 rate
= &(mode
->rates
[i
]);
1231 rate
->rate_inv
= CHAN_UTIL_RATE_LCM
/ rate
->rate
;
1233 ieee80211_prepare_rates(local
, mode
);
1235 if (!local
->oper_hw_mode
) {
1236 /* Default to this mode */
1237 local
->hw
.conf
.phymode
= mode
->mode
;
1238 local
->oper_hw_mode
= local
->scan_hw_mode
= mode
;
1239 local
->oper_channel
= local
->scan_channel
= &mode
->channels
[0];
1240 local
->hw
.conf
.mode
= local
->oper_hw_mode
;
1241 local
->hw
.conf
.chan
= local
->oper_channel
;
1244 if (!(hw
->flags
& IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED
))
1245 ieee80211_set_default_regdomain(mode
);
1249 EXPORT_SYMBOL(ieee80211_register_hwmode
);
1251 void ieee80211_unregister_hw(struct ieee80211_hw
*hw
)
1253 struct ieee80211_local
*local
= hw_to_local(hw
);
1254 struct ieee80211_sub_if_data
*sdata
, *tmp
;
1257 tasklet_kill(&local
->tx_pending_tasklet
);
1258 tasklet_kill(&local
->tasklet
);
1262 BUG_ON(local
->reg_state
!= IEEE80211_DEV_REGISTERED
);
1264 local
->reg_state
= IEEE80211_DEV_UNREGISTERED
;
1267 * At this point, interface list manipulations are fine
1268 * because the driver cannot be handing us frames any
1269 * more and the tasklet is killed.
1273 * First, we remove all non-master interfaces. Do this because they
1274 * may have bss pointer dependency on the master, and when we free
1275 * the master these would be freed as well, breaking our list
1276 * iteration completely.
1278 list_for_each_entry_safe(sdata
, tmp
, &local
->interfaces
, list
) {
1279 if (sdata
->dev
== local
->mdev
)
1281 list_del(&sdata
->list
);
1282 __ieee80211_if_del(local
, sdata
);
1285 /* then, finally, remove the master interface */
1286 __ieee80211_if_del(local
, IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1290 ieee80211_rx_bss_list_deinit(local
->mdev
);
1291 ieee80211_clear_tx_pending(local
);
1292 sta_info_stop(local
);
1293 rate_control_deinitialize(local
);
1294 debugfs_hw_del(local
);
1296 for (i
= 0; i
< NUM_IEEE80211_MODES
; i
++) {
1297 kfree(local
->supp_rates
[i
]);
1298 kfree(local
->basic_rates
[i
]);
1301 if (skb_queue_len(&local
->skb_queue
)
1302 || skb_queue_len(&local
->skb_queue_unreliable
))
1303 printk(KERN_WARNING
"%s: skb_queue not empty\n",
1304 wiphy_name(local
->hw
.wiphy
));
1305 skb_queue_purge(&local
->skb_queue
);
1306 skb_queue_purge(&local
->skb_queue_unreliable
);
1308 destroy_workqueue(local
->hw
.workqueue
);
1309 wiphy_unregister(local
->hw
.wiphy
);
1310 ieee80211_wep_free(local
);
1311 ieee80211_led_exit(local
);
1313 EXPORT_SYMBOL(ieee80211_unregister_hw
);
1315 void ieee80211_free_hw(struct ieee80211_hw
*hw
)
1317 struct ieee80211_local
*local
= hw_to_local(hw
);
1319 ieee80211_if_free(local
->mdev
);
1320 wiphy_free(local
->hw
.wiphy
);
1322 EXPORT_SYMBOL(ieee80211_free_hw
);
1324 static int __init
ieee80211_init(void)
1326 struct sk_buff
*skb
;
1329 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data
) > sizeof(skb
->cb
));
1331 ret
= rc80211_simple_init();
1335 ret
= rc80211_pid_init();
1339 ret
= ieee80211_wme_register();
1341 printk(KERN_DEBUG
"ieee80211_init: failed to "
1342 "initialize WME (err=%d)\n", ret
);
1346 ieee80211_debugfs_netdev_init();
1347 ieee80211_regdomain_init();
1352 rc80211_simple_exit();
1359 static void __exit
ieee80211_exit(void)
1361 rc80211_simple_exit();
1364 ieee80211_wme_unregister();
1365 ieee80211_debugfs_netdev_exit();
1369 subsys_initcall(ieee80211_init
);
1370 module_exit(ieee80211_exit
);
1372 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1373 MODULE_LICENSE("GPL");