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
->type
,
185 * can only add VLANs to enabled APs
187 if (sdata
->type
== IEEE80211_IF_TYPE_VLAN
&&
188 nsdata
->type
== IEEE80211_IF_TYPE_AP
&&
189 netif_running(nsdata
->dev
))
190 sdata
->u
.vlan
.ap
= nsdata
;
194 switch (sdata
->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
);
224 switch (sdata
->type
) {
225 case IEEE80211_IF_TYPE_VLAN
:
226 list_add(&sdata
->u
.vlan
.list
, &sdata
->u
.vlan
.ap
->u
.ap
.vlans
);
227 /* no need to tell driver */
229 case IEEE80211_IF_TYPE_MNTR
:
230 /* must be before the call to ieee80211_configure_filter */
232 if (local
->monitors
== 1) {
233 netif_tx_lock_bh(local
->mdev
);
234 ieee80211_configure_filter(local
);
235 netif_tx_unlock_bh(local
->mdev
);
237 local
->hw
.conf
.flags
|= IEEE80211_CONF_RADIOTAP
;
240 case IEEE80211_IF_TYPE_STA
:
241 case IEEE80211_IF_TYPE_IBSS
:
242 sdata
->u
.sta
.flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
245 conf
.if_id
= dev
->ifindex
;
246 conf
.type
= sdata
->type
;
247 conf
.mac_addr
= dev
->dev_addr
;
248 res
= local
->ops
->add_interface(local_to_hw(local
), &conf
);
249 if (res
&& !local
->open_count
&& local
->ops
->stop
)
250 local
->ops
->stop(local_to_hw(local
));
254 ieee80211_if_config(dev
);
255 ieee80211_reset_erp_info(dev
);
256 ieee80211_enable_keys(sdata
);
258 if (sdata
->type
== IEEE80211_IF_TYPE_STA
&&
259 !(sdata
->flags
& IEEE80211_SDATA_USERSPACE_MLME
))
260 netif_carrier_off(dev
);
262 netif_carrier_on(dev
);
265 if (local
->open_count
== 0) {
266 res
= dev_open(local
->mdev
);
268 tasklet_enable(&local
->tx_pending_tasklet
);
269 tasklet_enable(&local
->tasklet
);
273 * set_multicast_list will be invoked by the networking core
274 * which will check whether any increments here were done in
275 * error and sync them down to the hardware as filter flags.
277 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
278 atomic_inc(&local
->iff_allmultis
);
280 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
281 atomic_inc(&local
->iff_promiscs
);
285 netif_start_queue(dev
);
290 static int ieee80211_stop(struct net_device
*dev
)
292 struct ieee80211_sub_if_data
*sdata
;
293 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
294 struct ieee80211_if_init_conf conf
;
295 struct sta_info
*sta
;
298 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
300 list_for_each_entry(sta
, &local
->sta_list
, list
) {
301 for (i
= 0; i
< STA_TID_NUM
; i
++)
302 ieee80211_sta_stop_rx_ba_session(sta
->dev
, sta
->addr
,
303 i
, WLAN_BACK_RECIPIENT
,
304 WLAN_REASON_QSTA_LEAVE_QBSS
);
307 netif_stop_queue(dev
);
310 * Don't count this interface for promisc/allmulti while it
311 * is down. dev_mc_unsync() will invoke set_multicast_list
312 * on the master interface which will sync these down to the
313 * hardware as filter flags.
315 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
316 atomic_dec(&local
->iff_allmultis
);
318 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
319 atomic_dec(&local
->iff_promiscs
);
321 dev_mc_unsync(local
->mdev
, dev
);
323 /* down all dependent devices, that is VLANs */
324 if (sdata
->type
== IEEE80211_IF_TYPE_AP
) {
325 struct ieee80211_sub_if_data
*vlan
, *tmp
;
327 list_for_each_entry_safe(vlan
, tmp
, &sdata
->u
.ap
.vlans
,
329 dev_close(vlan
->dev
);
330 WARN_ON(!list_empty(&sdata
->u
.ap
.vlans
));
335 switch (sdata
->type
) {
336 case IEEE80211_IF_TYPE_VLAN
:
337 list_del(&sdata
->u
.vlan
.list
);
338 sdata
->u
.vlan
.ap
= NULL
;
339 /* no need to tell driver */
341 case IEEE80211_IF_TYPE_MNTR
:
343 if (local
->monitors
== 0) {
344 netif_tx_lock_bh(local
->mdev
);
345 ieee80211_configure_filter(local
);
346 netif_tx_unlock_bh(local
->mdev
);
348 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_RADIOTAP
;
351 case IEEE80211_IF_TYPE_STA
:
352 case IEEE80211_IF_TYPE_IBSS
:
353 sdata
->u
.sta
.state
= IEEE80211_DISABLED
;
354 del_timer_sync(&sdata
->u
.sta
.timer
);
356 * When we get here, the interface is marked down.
357 * Call synchronize_rcu() to wait for the RX path
358 * should it be using the interface and enqueuing
359 * frames at this very time on another CPU.
362 skb_queue_purge(&sdata
->u
.sta
.skb_queue
);
364 if (local
->scan_dev
== sdata
->dev
) {
365 if (!local
->ops
->hw_scan
) {
366 local
->sta_sw_scanning
= 0;
367 cancel_delayed_work(&local
->scan_work
);
369 local
->sta_hw_scanning
= 0;
372 flush_workqueue(local
->hw
.workqueue
);
374 sdata
->u
.sta
.flags
&= ~IEEE80211_STA_PRIVACY_INVOKED
;
375 kfree(sdata
->u
.sta
.extra_ie
);
376 sdata
->u
.sta
.extra_ie
= NULL
;
377 sdata
->u
.sta
.extra_ie_len
= 0;
380 conf
.if_id
= dev
->ifindex
;
381 conf
.type
= sdata
->type
;
382 conf
.mac_addr
= dev
->dev_addr
;
383 /* disable all keys for as long as this netdev is down */
384 ieee80211_disable_keys(sdata
);
385 local
->ops
->remove_interface(local_to_hw(local
), &conf
);
388 if (local
->open_count
== 0) {
389 if (netif_running(local
->mdev
))
390 dev_close(local
->mdev
);
392 if (local
->ops
->stop
)
393 local
->ops
->stop(local_to_hw(local
));
395 tasklet_disable(&local
->tx_pending_tasklet
);
396 tasklet_disable(&local
->tasklet
);
402 static void ieee80211_set_multicast_list(struct net_device
*dev
)
404 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
405 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
406 int allmulti
, promisc
, sdata_allmulti
, sdata_promisc
;
408 allmulti
= !!(dev
->flags
& IFF_ALLMULTI
);
409 promisc
= !!(dev
->flags
& IFF_PROMISC
);
410 sdata_allmulti
= !!(sdata
->flags
& IEEE80211_SDATA_ALLMULTI
);
411 sdata_promisc
= !!(sdata
->flags
& IEEE80211_SDATA_PROMISC
);
413 if (allmulti
!= sdata_allmulti
) {
414 if (dev
->flags
& IFF_ALLMULTI
)
415 atomic_inc(&local
->iff_allmultis
);
417 atomic_dec(&local
->iff_allmultis
);
418 sdata
->flags
^= IEEE80211_SDATA_ALLMULTI
;
421 if (promisc
!= sdata_promisc
) {
422 if (dev
->flags
& IFF_PROMISC
)
423 atomic_inc(&local
->iff_promiscs
);
425 atomic_dec(&local
->iff_promiscs
);
426 sdata
->flags
^= IEEE80211_SDATA_PROMISC
;
429 dev_mc_sync(local
->mdev
, dev
);
432 static const struct header_ops ieee80211_header_ops
= {
433 .create
= eth_header
,
434 .parse
= header_parse_80211
,
435 .rebuild
= eth_rebuild_header
,
436 .cache
= eth_header_cache
,
437 .cache_update
= eth_header_cache_update
,
440 /* Must not be called for mdev */
441 void ieee80211_if_setup(struct net_device
*dev
)
444 dev
->hard_start_xmit
= ieee80211_subif_start_xmit
;
445 dev
->wireless_handlers
= &ieee80211_iw_handler_def
;
446 dev
->set_multicast_list
= ieee80211_set_multicast_list
;
447 dev
->change_mtu
= ieee80211_change_mtu
;
448 dev
->open
= ieee80211_open
;
449 dev
->stop
= ieee80211_stop
;
450 dev
->destructor
= ieee80211_if_free
;
453 /* WDS specialties */
455 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
)
457 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
458 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
459 struct sta_info
*sta
;
460 DECLARE_MAC_BUF(mac
);
462 if (compare_ether_addr(remote_addr
, sdata
->u
.wds
.remote_addr
) == 0)
465 /* Create STA entry for the new peer */
466 sta
= sta_info_add(local
, dev
, remote_addr
, GFP_KERNEL
);
471 /* Remove STA entry for the old peer */
472 sta
= sta_info_get(local
, sdata
->u
.wds
.remote_addr
);
477 printk(KERN_DEBUG
"%s: could not find STA entry for WDS link "
479 dev
->name
, print_mac(mac
, sdata
->u
.wds
.remote_addr
));
482 /* Update WDS link data */
483 memcpy(&sdata
->u
.wds
.remote_addr
, remote_addr
, ETH_ALEN
);
488 /* everything else */
490 static int __ieee80211_if_config(struct net_device
*dev
,
491 struct sk_buff
*beacon
,
492 struct ieee80211_tx_control
*control
)
494 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
495 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
496 struct ieee80211_if_conf conf
;
498 if (!local
->ops
->config_interface
|| !netif_running(dev
))
501 memset(&conf
, 0, sizeof(conf
));
502 conf
.type
= sdata
->type
;
503 if (sdata
->type
== IEEE80211_IF_TYPE_STA
||
504 sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
505 conf
.bssid
= sdata
->u
.sta
.bssid
;
506 conf
.ssid
= sdata
->u
.sta
.ssid
;
507 conf
.ssid_len
= sdata
->u
.sta
.ssid_len
;
508 } else if (sdata
->type
== IEEE80211_IF_TYPE_AP
) {
509 conf
.ssid
= sdata
->u
.ap
.ssid
;
510 conf
.ssid_len
= sdata
->u
.ap
.ssid_len
;
511 conf
.beacon
= beacon
;
512 conf
.beacon_control
= control
;
514 return local
->ops
->config_interface(local_to_hw(local
),
515 dev
->ifindex
, &conf
);
518 int ieee80211_if_config(struct net_device
*dev
)
520 return __ieee80211_if_config(dev
, NULL
, NULL
);
523 int ieee80211_if_config_beacon(struct net_device
*dev
)
525 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
526 struct ieee80211_tx_control control
;
529 if (!(local
->hw
.flags
& IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
))
531 skb
= ieee80211_beacon_get(local_to_hw(local
), dev
->ifindex
, &control
);
534 return __ieee80211_if_config(dev
, skb
, &control
);
537 int ieee80211_hw_config(struct ieee80211_local
*local
)
539 struct ieee80211_hw_mode
*mode
;
540 struct ieee80211_channel
*chan
;
543 if (local
->sta_sw_scanning
) {
544 chan
= local
->scan_channel
;
545 mode
= local
->scan_hw_mode
;
547 chan
= local
->oper_channel
;
548 mode
= local
->oper_hw_mode
;
551 local
->hw
.conf
.channel
= chan
->chan
;
552 local
->hw
.conf
.channel_val
= chan
->val
;
553 if (!local
->hw
.conf
.power_level
) {
554 local
->hw
.conf
.power_level
= chan
->power_level
;
556 local
->hw
.conf
.power_level
= min(chan
->power_level
,
557 local
->hw
.conf
.power_level
);
559 local
->hw
.conf
.freq
= chan
->freq
;
560 local
->hw
.conf
.phymode
= mode
->mode
;
561 local
->hw
.conf
.antenna_max
= chan
->antenna_max
;
562 local
->hw
.conf
.chan
= chan
;
563 local
->hw
.conf
.mode
= mode
;
565 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
566 printk(KERN_DEBUG
"HW CONFIG: channel=%d freq=%d "
567 "phymode=%d\n", local
->hw
.conf
.channel
, local
->hw
.conf
.freq
,
568 local
->hw
.conf
.phymode
);
569 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
571 if (local
->open_count
)
572 ret
= local
->ops
->config(local_to_hw(local
), &local
->hw
.conf
);
578 * ieee80211_hw_config_ht should be used only after legacy configuration
579 * has been determined, as ht configuration depends upon the hardware's
580 * HT abilities for a _specific_ band.
582 int ieee80211_hw_config_ht(struct ieee80211_local
*local
, int enable_ht
,
583 struct ieee80211_ht_info
*req_ht_cap
,
584 struct ieee80211_ht_bss_info
*req_bss_cap
)
586 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
587 struct ieee80211_hw_mode
*mode
= conf
->mode
;
590 /* HT is not supported */
591 if (!mode
->ht_info
.ht_supported
) {
592 conf
->flags
&= ~IEEE80211_CONF_SUPPORT_HT_MODE
;
598 conf
->flags
&= ~IEEE80211_CONF_SUPPORT_HT_MODE
;
600 conf
->flags
|= IEEE80211_CONF_SUPPORT_HT_MODE
;
601 conf
->ht_conf
.cap
= req_ht_cap
->cap
& mode
->ht_info
.cap
;
602 conf
->ht_conf
.cap
&= ~(IEEE80211_HT_CAP_MIMO_PS
);
604 mode
->ht_info
.cap
& IEEE80211_HT_CAP_MIMO_PS
;
605 conf
->ht_bss_conf
.primary_channel
=
606 req_bss_cap
->primary_channel
;
607 conf
->ht_bss_conf
.bss_cap
= req_bss_cap
->bss_cap
;
608 conf
->ht_bss_conf
.bss_op_mode
= req_bss_cap
->bss_op_mode
;
609 for (i
= 0; i
< SUPP_MCS_SET_LEN
; i
++)
610 conf
->ht_conf
.supp_mcs_set
[i
] =
611 mode
->ht_info
.supp_mcs_set
[i
] &
612 req_ht_cap
->supp_mcs_set
[i
];
614 /* In STA mode, this gives us indication
615 * to the AP's mode of operation */
616 conf
->ht_conf
.ht_supported
= 1;
617 conf
->ht_conf
.ampdu_factor
= req_ht_cap
->ampdu_factor
;
618 conf
->ht_conf
.ampdu_density
= req_ht_cap
->ampdu_density
;
621 local
->ops
->conf_ht(local_to_hw(local
), &local
->hw
.conf
);
626 void ieee80211_erp_info_change_notify(struct net_device
*dev
, u8 changes
)
628 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
629 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
630 if (local
->ops
->erp_ie_changed
)
631 local
->ops
->erp_ie_changed(local_to_hw(local
), changes
,
632 !!(sdata
->flags
& IEEE80211_SDATA_USE_PROTECTION
),
633 !(sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
));
636 void ieee80211_reset_erp_info(struct net_device
*dev
)
638 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
640 sdata
->flags
&= ~(IEEE80211_SDATA_USE_PROTECTION
|
641 IEEE80211_SDATA_SHORT_PREAMBLE
);
642 ieee80211_erp_info_change_notify(dev
,
643 IEEE80211_ERP_CHANGE_PROTECTION
|
644 IEEE80211_ERP_CHANGE_PREAMBLE
);
647 void ieee80211_tx_status_irqsafe(struct ieee80211_hw
*hw
,
649 struct ieee80211_tx_status
*status
)
651 struct ieee80211_local
*local
= hw_to_local(hw
);
652 struct ieee80211_tx_status
*saved
;
655 skb
->dev
= local
->mdev
;
656 saved
= kmalloc(sizeof(struct ieee80211_tx_status
), GFP_ATOMIC
);
657 if (unlikely(!saved
)) {
659 printk(KERN_WARNING
"%s: Not enough memory, "
660 "dropping tx status", skb
->dev
->name
);
661 /* should be dev_kfree_skb_irq, but due to this function being
662 * named _irqsafe instead of just _irq we can't be sure that
663 * people won't call it from non-irq contexts */
664 dev_kfree_skb_any(skb
);
667 memcpy(saved
, status
, sizeof(struct ieee80211_tx_status
));
668 /* copy pointer to saved status into skb->cb for use by tasklet */
669 memcpy(skb
->cb
, &saved
, sizeof(saved
));
671 skb
->pkt_type
= IEEE80211_TX_STATUS_MSG
;
672 skb_queue_tail(status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
?
673 &local
->skb_queue
: &local
->skb_queue_unreliable
, skb
);
674 tmp
= skb_queue_len(&local
->skb_queue
) +
675 skb_queue_len(&local
->skb_queue_unreliable
);
676 while (tmp
> IEEE80211_IRQSAFE_QUEUE_LIMIT
&&
677 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
678 memcpy(&saved
, skb
->cb
, sizeof(saved
));
680 dev_kfree_skb_irq(skb
);
682 I802_DEBUG_INC(local
->tx_status_drop
);
684 tasklet_schedule(&local
->tasklet
);
686 EXPORT_SYMBOL(ieee80211_tx_status_irqsafe
);
688 static void ieee80211_tasklet_handler(unsigned long data
)
690 struct ieee80211_local
*local
= (struct ieee80211_local
*) data
;
692 struct ieee80211_rx_status rx_status
;
693 struct ieee80211_tx_status
*tx_status
;
695 while ((skb
= skb_dequeue(&local
->skb_queue
)) ||
696 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
697 switch (skb
->pkt_type
) {
698 case IEEE80211_RX_MSG
:
699 /* status is in skb->cb */
700 memcpy(&rx_status
, skb
->cb
, sizeof(rx_status
));
701 /* Clear skb->type in order to not confuse kernel
704 __ieee80211_rx(local_to_hw(local
), skb
, &rx_status
);
706 case IEEE80211_TX_STATUS_MSG
:
707 /* get pointer to saved status out of skb->cb */
708 memcpy(&tx_status
, skb
->cb
, sizeof(tx_status
));
710 ieee80211_tx_status(local_to_hw(local
),
714 default: /* should never get here! */
715 printk(KERN_ERR
"%s: Unknown message type (%d)\n",
716 wiphy_name(local
->hw
.wiphy
), skb
->pkt_type
);
723 /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
724 * make a prepared TX frame (one that has been given to hw) to look like brand
725 * new IEEE 802.11 frame that is ready to go through TX processing again.
726 * Also, tx_packet_data in cb is restored from tx_control. */
727 static void ieee80211_remove_tx_extra(struct ieee80211_local
*local
,
728 struct ieee80211_key
*key
,
730 struct ieee80211_tx_control
*control
)
732 int hdrlen
, iv_len
, mic_len
;
733 struct ieee80211_tx_packet_data
*pkt_data
;
735 pkt_data
= (struct ieee80211_tx_packet_data
*)skb
->cb
;
736 pkt_data
->ifindex
= control
->ifindex
;
738 if (control
->flags
& IEEE80211_TXCTL_REQ_TX_STATUS
)
739 pkt_data
->flags
|= IEEE80211_TXPD_REQ_TX_STATUS
;
740 if (control
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
)
741 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
742 if (control
->flags
& IEEE80211_TXCTL_REQUEUE
)
743 pkt_data
->flags
|= IEEE80211_TXPD_REQUEUE
;
744 if (control
->flags
& IEEE80211_TXCTL_EAPOL_FRAME
)
745 pkt_data
->flags
|= IEEE80211_TXPD_EAPOL_FRAME
;
746 pkt_data
->queue
= control
->queue
;
748 hdrlen
= ieee80211_get_hdrlen_from_skb(skb
);
753 switch (key
->conf
.alg
) {
756 mic_len
= WEP_ICV_LEN
;
759 iv_len
= TKIP_IV_LEN
;
760 mic_len
= TKIP_ICV_LEN
;
763 iv_len
= CCMP_HDR_LEN
;
764 mic_len
= CCMP_MIC_LEN
;
770 if (skb
->len
>= mic_len
&&
771 !(key
->flags
& KEY_FLAG_UPLOADED_TO_HARDWARE
))
772 skb_trim(skb
, skb
->len
- mic_len
);
773 if (skb
->len
>= iv_len
&& skb
->len
> hdrlen
) {
774 memmove(skb
->data
+ iv_len
, skb
->data
, hdrlen
);
775 skb_pull(skb
, iv_len
);
780 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
781 u16 fc
= le16_to_cpu(hdr
->frame_control
);
782 if ((fc
& 0x8C) == 0x88) /* QoS Control Field */ {
783 fc
&= ~IEEE80211_STYPE_QOS_DATA
;
784 hdr
->frame_control
= cpu_to_le16(fc
);
785 memmove(skb
->data
+ 2, skb
->data
, hdrlen
- 2);
791 void ieee80211_tx_status(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
792 struct ieee80211_tx_status
*status
)
794 struct sk_buff
*skb2
;
795 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
796 struct ieee80211_local
*local
= hw_to_local(hw
);
798 struct ieee80211_tx_status_rtap_hdr
*rthdr
;
799 struct ieee80211_sub_if_data
*sdata
;
804 "%s: ieee80211_tx_status called with NULL status\n",
805 wiphy_name(local
->hw
.wiphy
));
810 if (status
->excessive_retries
) {
811 struct sta_info
*sta
;
812 sta
= sta_info_get(local
, hdr
->addr1
);
814 if (sta
->flags
& WLAN_STA_PS
) {
815 /* The STA is in power save mode, so assume
816 * that this TX packet failed because of that.
818 status
->excessive_retries
= 0;
819 status
->flags
|= IEEE80211_TX_STATUS_TX_FILTERED
;
825 if (status
->flags
& IEEE80211_TX_STATUS_TX_FILTERED
) {
826 struct sta_info
*sta
;
827 sta
= sta_info_get(local
, hdr
->addr1
);
829 sta
->tx_filtered_count
++;
831 /* Clear the TX filter mask for this STA when sending
832 * the next packet. If the STA went to power save mode,
833 * this will happen when it is waking up for the next
835 sta
->clear_dst_mask
= 1;
837 /* TODO: Is the WLAN_STA_PS flag always set here or is
838 * the race between RX and TX status causing some
839 * packets to be filtered out before 80211.o gets an
840 * update for PS status? This seems to be the case, so
841 * no changes are likely to be needed. */
842 if (sta
->flags
& WLAN_STA_PS
&&
843 skb_queue_len(&sta
->tx_filtered
) <
845 ieee80211_remove_tx_extra(local
, sta
->key
,
848 skb_queue_tail(&sta
->tx_filtered
, skb
);
849 } else if (!(sta
->flags
& WLAN_STA_PS
) &&
850 !(status
->control
.flags
& IEEE80211_TXCTL_REQUEUE
)) {
851 /* Software retry the packet once */
852 status
->control
.flags
|= IEEE80211_TXCTL_REQUEUE
;
853 ieee80211_remove_tx_extra(local
, sta
->key
,
858 if (net_ratelimit()) {
859 printk(KERN_DEBUG
"%s: dropped TX "
860 "filtered frame queue_len=%d "
862 wiphy_name(local
->hw
.wiphy
),
865 !!(sta
->flags
& WLAN_STA_PS
),
874 rate_control_tx_status(local
->mdev
, skb
, status
);
876 ieee80211_led_tx(local
, 0);
879 * Fragments are passed to low-level drivers as separate skbs, so these
880 * are actually fragments, not frames. Update frame counters only for
881 * the first fragment of the frame. */
883 frag
= le16_to_cpu(hdr
->seq_ctrl
) & IEEE80211_SCTL_FRAG
;
884 type
= le16_to_cpu(hdr
->frame_control
) & IEEE80211_FCTL_FTYPE
;
886 if (status
->flags
& IEEE80211_TX_STATUS_ACK
) {
888 local
->dot11TransmittedFrameCount
++;
889 if (is_multicast_ether_addr(hdr
->addr1
))
890 local
->dot11MulticastTransmittedFrameCount
++;
891 if (status
->retry_count
> 0)
892 local
->dot11RetryCount
++;
893 if (status
->retry_count
> 1)
894 local
->dot11MultipleRetryCount
++;
897 /* This counter shall be incremented for an acknowledged MPDU
898 * with an individual address in the address 1 field or an MPDU
899 * with a multicast address in the address 1 field of type Data
901 if (!is_multicast_ether_addr(hdr
->addr1
) ||
902 type
== IEEE80211_FTYPE_DATA
||
903 type
== IEEE80211_FTYPE_MGMT
)
904 local
->dot11TransmittedFragmentCount
++;
907 local
->dot11FailedCount
++;
910 /* this was a transmitted frame, but now we want to reuse it */
913 if (!local
->monitors
) {
918 /* send frame to monitor interfaces now */
920 if (skb_headroom(skb
) < sizeof(*rthdr
)) {
921 printk(KERN_ERR
"ieee80211_tx_status: headroom too small\n");
926 rthdr
= (struct ieee80211_tx_status_rtap_hdr
*)
927 skb_push(skb
, sizeof(*rthdr
));
929 memset(rthdr
, 0, sizeof(*rthdr
));
930 rthdr
->hdr
.it_len
= cpu_to_le16(sizeof(*rthdr
));
931 rthdr
->hdr
.it_present
=
932 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS
) |
933 (1 << IEEE80211_RADIOTAP_DATA_RETRIES
));
935 if (!(status
->flags
& IEEE80211_TX_STATUS_ACK
) &&
936 !is_multicast_ether_addr(hdr
->addr1
))
937 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL
);
939 if ((status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
) &&
940 (status
->control
.flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
))
941 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS
);
942 else if (status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
)
943 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS
);
945 rthdr
->data_retries
= status
->retry_count
;
948 monitors
= local
->monitors
;
949 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
951 * Using the monitors counter is possibly racy, but
952 * if the value is wrong we simply either clone the skb
953 * once too much or forget sending it to one monitor iface
954 * The latter case isn't nice but fixing the race is much
957 if (!monitors
|| !skb
)
960 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
961 if (!netif_running(sdata
->dev
))
965 skb2
= skb_clone(skb
, GFP_ATOMIC
);
968 skb
->dev
= sdata
->dev
;
969 /* XXX: is this sufficient for BPF? */
970 skb_set_mac_header(skb
, 0);
971 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
972 skb
->pkt_type
= PACKET_OTHERHOST
;
973 skb
->protocol
= htons(ETH_P_802_2
);
974 memset(skb
->cb
, 0, sizeof(skb
->cb
));
984 EXPORT_SYMBOL(ieee80211_tx_status
);
986 struct ieee80211_hw
*ieee80211_alloc_hw(size_t priv_data_len
,
987 const struct ieee80211_ops
*ops
)
989 struct net_device
*mdev
;
990 struct ieee80211_local
*local
;
991 struct ieee80211_sub_if_data
*sdata
;
995 /* Ensure 32-byte alignment of our private data and hw private data.
996 * We use the wiphy priv data for both our ieee80211_local and for
997 * the driver's private data
999 * In memory it'll be like this:
1001 * +-------------------------+
1003 * +-------------------------+
1004 * | struct ieee80211_local |
1005 * +-------------------------+
1006 * | driver's private data |
1007 * +-------------------------+
1010 priv_size
= ((sizeof(struct ieee80211_local
) +
1011 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
) +
1014 wiphy
= wiphy_new(&mac80211_config_ops
, priv_size
);
1019 wiphy
->privid
= mac80211_wiphy_privid
;
1021 local
= wiphy_priv(wiphy
);
1022 local
->hw
.wiphy
= wiphy
;
1024 local
->hw
.priv
= (char *)local
+
1025 ((sizeof(struct ieee80211_local
) +
1026 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
);
1029 BUG_ON(!ops
->start
);
1031 BUG_ON(!ops
->config
);
1032 BUG_ON(!ops
->add_interface
);
1033 BUG_ON(!ops
->remove_interface
);
1034 BUG_ON(!ops
->configure_filter
);
1037 /* for now, mdev needs sub_if_data :/ */
1038 mdev
= alloc_netdev(sizeof(struct ieee80211_sub_if_data
),
1039 "wmaster%d", ether_setup
);
1045 sdata
= IEEE80211_DEV_TO_SUB_IF(mdev
);
1046 mdev
->ieee80211_ptr
= &sdata
->wdev
;
1047 sdata
->wdev
.wiphy
= wiphy
;
1049 local
->hw
.queues
= 1; /* default */
1052 local
->rx_pre_handlers
= ieee80211_rx_pre_handlers
;
1053 local
->rx_handlers
= ieee80211_rx_handlers
;
1054 local
->tx_handlers
= ieee80211_tx_handlers
;
1056 local
->bridge_packets
= 1;
1058 local
->rts_threshold
= IEEE80211_MAX_RTS_THRESHOLD
;
1059 local
->fragmentation_threshold
= IEEE80211_MAX_FRAG_THRESHOLD
;
1060 local
->short_retry_limit
= 7;
1061 local
->long_retry_limit
= 4;
1062 local
->hw
.conf
.radio_enabled
= 1;
1064 local
->enabled_modes
= ~0;
1066 INIT_LIST_HEAD(&local
->modes_list
);
1068 INIT_LIST_HEAD(&local
->interfaces
);
1070 INIT_DELAYED_WORK(&local
->scan_work
, ieee80211_sta_scan_work
);
1071 ieee80211_rx_bss_list_init(mdev
);
1073 sta_info_init(local
);
1075 mdev
->hard_start_xmit
= ieee80211_master_start_xmit
;
1076 mdev
->open
= ieee80211_master_open
;
1077 mdev
->stop
= ieee80211_master_stop
;
1078 mdev
->type
= ARPHRD_IEEE80211
;
1079 mdev
->header_ops
= &ieee80211_header_ops
;
1080 mdev
->set_multicast_list
= ieee80211_master_set_multicast_list
;
1082 sdata
->type
= IEEE80211_IF_TYPE_AP
;
1084 sdata
->local
= local
;
1085 sdata
->u
.ap
.force_unicast_rateidx
= -1;
1086 sdata
->u
.ap
.max_ratectrl_rateidx
= -1;
1087 ieee80211_if_sdata_init(sdata
);
1088 /* no RCU needed since we're still during init phase */
1089 list_add_tail(&sdata
->list
, &local
->interfaces
);
1091 tasklet_init(&local
->tx_pending_tasklet
, ieee80211_tx_pending
,
1092 (unsigned long)local
);
1093 tasklet_disable(&local
->tx_pending_tasklet
);
1095 tasklet_init(&local
->tasklet
,
1096 ieee80211_tasklet_handler
,
1097 (unsigned long) local
);
1098 tasklet_disable(&local
->tasklet
);
1100 skb_queue_head_init(&local
->skb_queue
);
1101 skb_queue_head_init(&local
->skb_queue_unreliable
);
1103 return local_to_hw(local
);
1105 EXPORT_SYMBOL(ieee80211_alloc_hw
);
1107 int ieee80211_register_hw(struct ieee80211_hw
*hw
)
1109 struct ieee80211_local
*local
= hw_to_local(hw
);
1113 result
= wiphy_register(local
->hw
.wiphy
);
1117 name
= wiphy_dev(local
->hw
.wiphy
)->driver
->name
;
1118 local
->hw
.workqueue
= create_singlethread_workqueue(name
);
1119 if (!local
->hw
.workqueue
) {
1121 goto fail_workqueue
;
1125 * The hardware needs headroom for sending the frame,
1126 * and we need some headroom for passing the frame to monitor
1127 * interfaces, but never both at the same time.
1129 local
->tx_headroom
= max_t(unsigned int , local
->hw
.extra_tx_headroom
,
1130 sizeof(struct ieee80211_tx_status_rtap_hdr
));
1132 debugfs_hw_add(local
);
1134 local
->hw
.conf
.beacon_int
= 1000;
1136 local
->wstats_flags
|= local
->hw
.max_rssi
?
1137 IW_QUAL_LEVEL_UPDATED
: IW_QUAL_LEVEL_INVALID
;
1138 local
->wstats_flags
|= local
->hw
.max_signal
?
1139 IW_QUAL_QUAL_UPDATED
: IW_QUAL_QUAL_INVALID
;
1140 local
->wstats_flags
|= local
->hw
.max_noise
?
1141 IW_QUAL_NOISE_UPDATED
: IW_QUAL_NOISE_INVALID
;
1142 if (local
->hw
.max_rssi
< 0 || local
->hw
.max_noise
< 0)
1143 local
->wstats_flags
|= IW_QUAL_DBM
;
1145 result
= sta_info_start(local
);
1150 result
= dev_alloc_name(local
->mdev
, local
->mdev
->name
);
1154 memcpy(local
->mdev
->dev_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1155 SET_NETDEV_DEV(local
->mdev
, wiphy_dev(local
->hw
.wiphy
));
1157 result
= register_netdevice(local
->mdev
);
1161 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1162 ieee80211_if_set_type(local
->mdev
, IEEE80211_IF_TYPE_AP
);
1164 result
= ieee80211_init_rate_ctrl_alg(local
,
1165 hw
->rate_control_algorithm
);
1167 printk(KERN_DEBUG
"%s: Failed to initialize rate control "
1168 "algorithm\n", wiphy_name(local
->hw
.wiphy
));
1172 result
= ieee80211_wep_init(local
);
1175 printk(KERN_DEBUG
"%s: Failed to initialize wep\n",
1176 wiphy_name(local
->hw
.wiphy
));
1180 ieee80211_install_qdisc(local
->mdev
);
1182 /* add one default STA interface */
1183 result
= ieee80211_if_add(local
->mdev
, "wlan%d", NULL
,
1184 IEEE80211_IF_TYPE_STA
);
1186 printk(KERN_WARNING
"%s: Failed to add default virtual iface\n",
1187 wiphy_name(local
->hw
.wiphy
));
1189 local
->reg_state
= IEEE80211_DEV_REGISTERED
;
1192 ieee80211_led_init(local
);
1197 rate_control_deinitialize(local
);
1199 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1200 unregister_netdevice(local
->mdev
);
1203 sta_info_stop(local
);
1205 debugfs_hw_del(local
);
1206 destroy_workqueue(local
->hw
.workqueue
);
1208 wiphy_unregister(local
->hw
.wiphy
);
1211 EXPORT_SYMBOL(ieee80211_register_hw
);
1213 int ieee80211_register_hwmode(struct ieee80211_hw
*hw
,
1214 struct ieee80211_hw_mode
*mode
)
1216 struct ieee80211_local
*local
= hw_to_local(hw
);
1217 struct ieee80211_rate
*rate
;
1220 INIT_LIST_HEAD(&mode
->list
);
1221 list_add_tail(&mode
->list
, &local
->modes_list
);
1223 local
->hw_modes
|= (1 << mode
->mode
);
1224 for (i
= 0; i
< mode
->num_rates
; i
++) {
1225 rate
= &(mode
->rates
[i
]);
1226 rate
->rate_inv
= CHAN_UTIL_RATE_LCM
/ rate
->rate
;
1228 ieee80211_prepare_rates(local
, mode
);
1230 if (!local
->oper_hw_mode
) {
1231 /* Default to this mode */
1232 local
->hw
.conf
.phymode
= mode
->mode
;
1233 local
->oper_hw_mode
= local
->scan_hw_mode
= mode
;
1234 local
->oper_channel
= local
->scan_channel
= &mode
->channels
[0];
1235 local
->hw
.conf
.mode
= local
->oper_hw_mode
;
1236 local
->hw
.conf
.chan
= local
->oper_channel
;
1239 if (!(hw
->flags
& IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED
))
1240 ieee80211_set_default_regdomain(mode
);
1244 EXPORT_SYMBOL(ieee80211_register_hwmode
);
1246 void ieee80211_unregister_hw(struct ieee80211_hw
*hw
)
1248 struct ieee80211_local
*local
= hw_to_local(hw
);
1249 struct ieee80211_sub_if_data
*sdata
, *tmp
;
1252 tasklet_kill(&local
->tx_pending_tasklet
);
1253 tasklet_kill(&local
->tasklet
);
1257 BUG_ON(local
->reg_state
!= IEEE80211_DEV_REGISTERED
);
1259 local
->reg_state
= IEEE80211_DEV_UNREGISTERED
;
1262 * At this point, interface list manipulations are fine
1263 * because the driver cannot be handing us frames any
1264 * more and the tasklet is killed.
1268 * First, we remove all non-master interfaces. Do this because they
1269 * may have bss pointer dependency on the master, and when we free
1270 * the master these would be freed as well, breaking our list
1271 * iteration completely.
1273 list_for_each_entry_safe(sdata
, tmp
, &local
->interfaces
, list
) {
1274 if (sdata
->dev
== local
->mdev
)
1276 list_del(&sdata
->list
);
1277 __ieee80211_if_del(local
, sdata
);
1280 /* then, finally, remove the master interface */
1281 __ieee80211_if_del(local
, IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1285 ieee80211_rx_bss_list_deinit(local
->mdev
);
1286 ieee80211_clear_tx_pending(local
);
1287 sta_info_stop(local
);
1288 rate_control_deinitialize(local
);
1289 debugfs_hw_del(local
);
1291 for (i
= 0; i
< NUM_IEEE80211_MODES
; i
++) {
1292 kfree(local
->supp_rates
[i
]);
1293 kfree(local
->basic_rates
[i
]);
1296 if (skb_queue_len(&local
->skb_queue
)
1297 || skb_queue_len(&local
->skb_queue_unreliable
))
1298 printk(KERN_WARNING
"%s: skb_queue not empty\n",
1299 wiphy_name(local
->hw
.wiphy
));
1300 skb_queue_purge(&local
->skb_queue
);
1301 skb_queue_purge(&local
->skb_queue_unreliable
);
1303 destroy_workqueue(local
->hw
.workqueue
);
1304 wiphy_unregister(local
->hw
.wiphy
);
1305 ieee80211_wep_free(local
);
1306 ieee80211_led_exit(local
);
1308 EXPORT_SYMBOL(ieee80211_unregister_hw
);
1310 void ieee80211_free_hw(struct ieee80211_hw
*hw
)
1312 struct ieee80211_local
*local
= hw_to_local(hw
);
1314 ieee80211_if_free(local
->mdev
);
1315 wiphy_free(local
->hw
.wiphy
);
1317 EXPORT_SYMBOL(ieee80211_free_hw
);
1319 static int __init
ieee80211_init(void)
1321 struct sk_buff
*skb
;
1324 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data
) > sizeof(skb
->cb
));
1326 #ifdef CONFIG_MAC80211_RC_SIMPLE
1327 ret
= ieee80211_rate_control_register(&mac80211_rcsimple
);
1332 #ifdef CONFIG_MAC80211_RC_PID
1333 ret
= ieee80211_rate_control_register(&mac80211_rcpid
);
1338 ret
= ieee80211_wme_register();
1340 printk(KERN_DEBUG
"ieee80211_init: failed to "
1341 "initialize WME (err=%d)\n", ret
);
1345 ieee80211_debugfs_netdev_init();
1346 ieee80211_regdomain_init();
1352 #ifdef CONFIG_MAC80211_RC_SIMPLE
1353 ieee80211_rate_control_unregister(&mac80211_rcsimple
);
1355 #ifdef CONFIG_MAC80211_RC_PID
1356 ieee80211_rate_control_unregister(&mac80211_rcpid
);
1362 static void __exit
ieee80211_exit(void)
1364 #ifdef CONFIG_MAC80211_RC_SIMPLE
1365 ieee80211_rate_control_unregister(&mac80211_rcsimple
);
1367 #ifdef CONFIG_MAC80211_RC_PID
1368 ieee80211_rate_control_unregister(&mac80211_rcpid
);
1371 ieee80211_wme_unregister();
1372 ieee80211_debugfs_netdev_exit();
1376 subsys_initcall(ieee80211_init
);
1377 module_exit(ieee80211_exit
);
1379 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1380 MODULE_LICENSE("GPL");