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/cfg80211.h>
26 #include "ieee80211_common.h"
27 #include "ieee80211_i.h"
28 #include "ieee80211_rate.h"
32 #include "ieee80211_led.h"
33 #include "ieee80211_cfg.h"
35 #include "debugfs_netdev.h"
38 * For seeing transmitted packets on monitor interfaces
39 * we have a radiotap header too.
41 struct ieee80211_tx_status_rtap_hdr
{
42 struct ieee80211_radiotap_header hdr
;
45 } __attribute__ ((packed
));
47 /* common interface routines */
49 static struct net_device_stats
*ieee80211_get_stats(struct net_device
*dev
)
51 struct ieee80211_sub_if_data
*sdata
;
52 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
53 return &(sdata
->stats
);
56 static int header_parse_80211(struct sk_buff
*skb
, unsigned char *haddr
)
58 memcpy(haddr
, skb_mac_header(skb
) + 10, ETH_ALEN
); /* addr2 */
62 /* master interface */
64 static int ieee80211_master_open(struct net_device
*dev
)
66 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
67 struct ieee80211_sub_if_data
*sdata
;
68 int res
= -EOPNOTSUPP
;
70 read_lock(&local
->sub_if_lock
);
71 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
72 if (sdata
->dev
!= dev
&& netif_running(sdata
->dev
)) {
77 read_unlock(&local
->sub_if_lock
);
81 static int ieee80211_master_stop(struct net_device
*dev
)
83 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
84 struct ieee80211_sub_if_data
*sdata
;
86 read_lock(&local
->sub_if_lock
);
87 list_for_each_entry(sdata
, &local
->sub_if_list
, list
)
88 if (sdata
->dev
!= dev
&& netif_running(sdata
->dev
))
89 dev_close(sdata
->dev
);
90 read_unlock(&local
->sub_if_lock
);
95 /* management interface */
98 ieee80211_fill_frame_info(struct ieee80211_local
*local
,
99 struct ieee80211_frame_info
*fi
,
100 struct ieee80211_rx_status
*status
)
104 struct ieee80211_rate
*rate
;
106 jiffies_to_timespec(jiffies
, &ts
);
107 fi
->hosttime
= cpu_to_be64((u64
) ts
.tv_sec
* 1000000 +
109 fi
->mactime
= cpu_to_be64(status
->mactime
);
110 switch (status
->phymode
) {
111 case MODE_IEEE80211A
:
112 fi
->phytype
= htonl(ieee80211_phytype_ofdm_dot11_a
);
114 case MODE_IEEE80211B
:
115 fi
->phytype
= htonl(ieee80211_phytype_dsss_dot11_b
);
117 case MODE_IEEE80211G
:
118 fi
->phytype
= htonl(ieee80211_phytype_pbcc_dot11_g
);
120 case MODE_ATHEROS_TURBO
:
122 htonl(ieee80211_phytype_dsss_dot11_turbo
);
125 fi
->phytype
= htonl(0xAAAAAAAA);
128 fi
->channel
= htonl(status
->channel
);
129 rate
= ieee80211_get_rate(local
, status
->phymode
,
132 fi
->datarate
= htonl(rate
->rate
);
133 if (rate
->flags
& IEEE80211_RATE_PREAMBLE2
) {
134 if (status
->rate
== rate
->val
)
135 fi
->preamble
= htonl(2); /* long */
136 else if (status
->rate
== rate
->val2
)
137 fi
->preamble
= htonl(1); /* short */
139 fi
->preamble
= htonl(0);
141 fi
->datarate
= htonl(0);
142 fi
->preamble
= htonl(0);
145 fi
->antenna
= htonl(status
->antenna
);
146 fi
->priority
= htonl(0xffffffff); /* no clue */
147 fi
->ssi_type
= htonl(ieee80211_ssi_raw
);
148 fi
->ssi_signal
= htonl(status
->ssi
);
149 fi
->ssi_noise
= 0x00000000;
152 /* clear everything because we really don't know.
153 * the msg_type field isn't present on monitor frames
154 * so we don't know whether it will be present or not,
155 * but it's ok to not clear it since it'll be assigned
157 memset(fi
, 0, sizeof(*fi
) - sizeof(fi
->msg_type
));
159 fi
->ssi_type
= htonl(ieee80211_ssi_none
);
161 fi
->version
= htonl(IEEE80211_FI_VERSION
);
162 fi
->length
= cpu_to_be32(sizeof(*fi
) - sizeof(fi
->msg_type
));
165 /* this routine is actually not just for this, but also
166 * for pushing fake 'management' frames into userspace.
167 * it shall be replaced by a netlink-based system. */
169 ieee80211_rx_mgmt(struct ieee80211_local
*local
, struct sk_buff
*skb
,
170 struct ieee80211_rx_status
*status
, u32 msg_type
)
172 struct ieee80211_frame_info
*fi
;
173 const size_t hlen
= sizeof(struct ieee80211_frame_info
);
174 struct ieee80211_sub_if_data
*sdata
;
176 skb
->dev
= local
->apdev
;
178 sdata
= IEEE80211_DEV_TO_SUB_IF(local
->apdev
);
180 if (skb_headroom(skb
) < hlen
) {
181 I802_DEBUG_INC(local
->rx_expand_skb_head
);
182 if (pskb_expand_head(skb
, hlen
, 0, GFP_ATOMIC
)) {
188 fi
= (struct ieee80211_frame_info
*) skb_push(skb
, hlen
);
190 ieee80211_fill_frame_info(local
, fi
, status
);
191 fi
->msg_type
= htonl(msg_type
);
193 sdata
->stats
.rx_packets
++;
194 sdata
->stats
.rx_bytes
+= skb
->len
;
196 skb_set_mac_header(skb
, 0);
197 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
198 skb
->pkt_type
= PACKET_OTHERHOST
;
199 skb
->protocol
= htons(ETH_P_802_2
);
200 memset(skb
->cb
, 0, sizeof(skb
->cb
));
204 void ieee80211_key_threshold_notify(struct net_device
*dev
,
205 struct ieee80211_key
*key
,
206 struct sta_info
*sta
)
208 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
210 struct ieee80211_msg_key_notification
*msg
;
212 /* if no one will get it anyway, don't even allocate it.
213 * unlikely because this is only relevant for APs
214 * where the device must be open... */
215 if (unlikely(!local
->apdev
))
218 skb
= dev_alloc_skb(sizeof(struct ieee80211_frame_info
) +
219 sizeof(struct ieee80211_msg_key_notification
));
223 skb_reserve(skb
, sizeof(struct ieee80211_frame_info
));
224 msg
= (struct ieee80211_msg_key_notification
*)
225 skb_put(skb
, sizeof(struct ieee80211_msg_key_notification
));
226 msg
->tx_rx_count
= key
->tx_rx_count
;
227 memcpy(msg
->ifname
, dev
->name
, IFNAMSIZ
);
229 memcpy(msg
->addr
, sta
->addr
, ETH_ALEN
);
231 memset(msg
->addr
, 0xff, ETH_ALEN
);
233 key
->tx_rx_count
= 0;
235 ieee80211_rx_mgmt(local
, skb
, NULL
,
236 ieee80211_msg_key_threshold_notification
);
239 static int ieee80211_mgmt_open(struct net_device
*dev
)
241 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
243 if (!netif_running(local
->mdev
))
248 static int ieee80211_mgmt_stop(struct net_device
*dev
)
253 static int ieee80211_change_mtu_apdev(struct net_device
*dev
, int new_mtu
)
255 /* FIX: what would be proper limits for MTU?
256 * This interface uses 802.11 frames. */
257 if (new_mtu
< 256 || new_mtu
> IEEE80211_MAX_DATA_LEN
) {
258 printk(KERN_WARNING
"%s: invalid MTU %d\n",
263 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
264 printk(KERN_DEBUG
"%s: setting MTU %d\n", dev
->name
, new_mtu
);
265 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
270 void ieee80211_if_mgmt_setup(struct net_device
*dev
)
273 dev
->hard_start_xmit
= ieee80211_mgmt_start_xmit
;
274 dev
->change_mtu
= ieee80211_change_mtu_apdev
;
275 dev
->get_stats
= ieee80211_get_stats
;
276 dev
->open
= ieee80211_mgmt_open
;
277 dev
->stop
= ieee80211_mgmt_stop
;
278 dev
->type
= ARPHRD_IEEE80211_PRISM
;
279 dev
->hard_header_parse
= header_parse_80211
;
280 dev
->uninit
= ieee80211_if_reinit
;
281 dev
->destructor
= ieee80211_if_free
;
284 /* regular interfaces */
286 static int ieee80211_change_mtu(struct net_device
*dev
, int new_mtu
)
288 /* FIX: what would be proper limits for MTU?
289 * This interface uses 802.3 frames. */
290 if (new_mtu
< 256 || new_mtu
> IEEE80211_MAX_DATA_LEN
- 24 - 6) {
291 printk(KERN_WARNING
"%s: invalid MTU %d\n",
296 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
297 printk(KERN_DEBUG
"%s: setting MTU %d\n", dev
->name
, new_mtu
);
298 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
303 static inline int identical_mac_addr_allowed(int type1
, int type2
)
305 return (type1
== IEEE80211_IF_TYPE_MNTR
||
306 type2
== IEEE80211_IF_TYPE_MNTR
||
307 (type1
== IEEE80211_IF_TYPE_AP
&&
308 type2
== IEEE80211_IF_TYPE_WDS
) ||
309 (type1
== IEEE80211_IF_TYPE_WDS
&&
310 (type2
== IEEE80211_IF_TYPE_WDS
||
311 type2
== IEEE80211_IF_TYPE_AP
)) ||
312 (type1
== IEEE80211_IF_TYPE_AP
&&
313 type2
== IEEE80211_IF_TYPE_VLAN
) ||
314 (type1
== IEEE80211_IF_TYPE_VLAN
&&
315 (type2
== IEEE80211_IF_TYPE_AP
||
316 type2
== IEEE80211_IF_TYPE_VLAN
)));
319 /* Check if running monitor interfaces should go to a "soft monitor" mode
320 * and switch them if necessary. */
321 static inline void ieee80211_start_soft_monitor(struct ieee80211_local
*local
)
323 struct ieee80211_if_init_conf conf
;
325 if (local
->open_count
&& local
->open_count
== local
->monitors
&&
326 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
) &&
327 local
->ops
->remove_interface
) {
329 conf
.type
= IEEE80211_IF_TYPE_MNTR
;
330 conf
.mac_addr
= NULL
;
331 local
->ops
->remove_interface(local_to_hw(local
), &conf
);
335 /* Check if running monitor interfaces should go to a "hard monitor" mode
336 * and switch them if necessary. */
337 static void ieee80211_start_hard_monitor(struct ieee80211_local
*local
)
339 struct ieee80211_if_init_conf conf
;
341 if (local
->open_count
&& local
->open_count
== local
->monitors
&&
342 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
)) {
344 conf
.type
= IEEE80211_IF_TYPE_MNTR
;
345 conf
.mac_addr
= NULL
;
346 local
->ops
->add_interface(local_to_hw(local
), &conf
);
350 static void ieee80211_if_open(struct net_device
*dev
)
352 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
354 switch (sdata
->type
) {
355 case IEEE80211_IF_TYPE_STA
:
356 case IEEE80211_IF_TYPE_IBSS
:
357 sdata
->u
.sta
.prev_bssid_set
= 0;
362 static int ieee80211_open(struct net_device
*dev
)
364 struct ieee80211_sub_if_data
*sdata
, *nsdata
;
365 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
366 struct ieee80211_if_init_conf conf
;
369 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
370 read_lock(&local
->sub_if_lock
);
371 list_for_each_entry(nsdata
, &local
->sub_if_list
, list
) {
372 struct net_device
*ndev
= nsdata
->dev
;
374 if (ndev
!= dev
&& ndev
!= local
->mdev
&& netif_running(ndev
) &&
375 compare_ether_addr(dev
->dev_addr
, ndev
->dev_addr
) == 0 &&
376 !identical_mac_addr_allowed(sdata
->type
, nsdata
->type
)) {
377 read_unlock(&local
->sub_if_lock
);
381 read_unlock(&local
->sub_if_lock
);
383 if (sdata
->type
== IEEE80211_IF_TYPE_WDS
&&
384 is_zero_ether_addr(sdata
->u
.wds
.remote_addr
))
387 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
&& local
->open_count
&&
388 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
)) {
389 /* run the interface in a "soft monitor" mode */
392 local
->hw
.conf
.flags
|= IEEE80211_CONF_RADIOTAP
;
395 ieee80211_if_open(dev
);
396 ieee80211_start_soft_monitor(local
);
398 conf
.if_id
= dev
->ifindex
;
399 conf
.type
= sdata
->type
;
400 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
)
401 conf
.mac_addr
= NULL
;
403 conf
.mac_addr
= dev
->dev_addr
;
404 res
= local
->ops
->add_interface(local_to_hw(local
), &conf
);
406 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
)
407 ieee80211_start_hard_monitor(local
);
411 if (local
->open_count
== 0) {
413 tasklet_enable(&local
->tx_pending_tasklet
);
414 tasklet_enable(&local
->tasklet
);
415 if (local
->ops
->open
)
416 res
= local
->ops
->open(local_to_hw(local
));
418 res
= dev_open(local
->mdev
);
420 if (local
->ops
->stop
)
421 local
->ops
->stop(local_to_hw(local
));
423 res
= ieee80211_hw_config(local
);
424 if (res
&& local
->ops
->stop
)
425 local
->ops
->stop(local_to_hw(local
));
426 else if (!res
&& local
->apdev
)
427 dev_open(local
->apdev
);
431 if (local
->ops
->remove_interface
)
432 local
->ops
->remove_interface(local_to_hw(local
),
439 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
441 local
->hw
.conf
.flags
|= IEEE80211_CONF_RADIOTAP
;
443 ieee80211_if_config(dev
);
444 ieee80211_reset_erp_info(dev
);
447 if (sdata
->type
== IEEE80211_IF_TYPE_STA
&&
448 !local
->user_space_mlme
)
449 netif_carrier_off(dev
);
451 netif_carrier_on(dev
);
453 netif_start_queue(dev
);
457 static void ieee80211_if_shutdown(struct net_device
*dev
)
459 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
460 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
463 switch (sdata
->type
) {
464 case IEEE80211_IF_TYPE_STA
:
465 case IEEE80211_IF_TYPE_IBSS
:
466 sdata
->u
.sta
.state
= IEEE80211_DISABLED
;
467 del_timer_sync(&sdata
->u
.sta
.timer
);
469 * Holding the sub_if_lock for writing here blocks
470 * out the receive path and makes sure it's not
471 * currently processing a packet that may get
472 * added to the queue.
474 write_lock_bh(&local
->sub_if_lock
);
475 skb_queue_purge(&sdata
->u
.sta
.skb_queue
);
476 write_unlock_bh(&local
->sub_if_lock
);
478 if (!local
->ops
->hw_scan
&&
479 local
->scan_dev
== sdata
->dev
) {
480 local
->sta_scanning
= 0;
481 cancel_delayed_work(&local
->scan_work
);
483 flush_workqueue(local
->hw
.workqueue
);
488 static int ieee80211_stop(struct net_device
*dev
)
490 struct ieee80211_sub_if_data
*sdata
;
491 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
493 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
495 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
&&
496 local
->open_count
> 1 &&
497 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
)) {
498 /* remove "soft monitor" interface */
501 if (!local
->monitors
)
502 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_RADIOTAP
;
506 netif_stop_queue(dev
);
507 ieee80211_if_shutdown(dev
);
509 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
511 if (!local
->monitors
)
512 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_RADIOTAP
;
516 if (local
->open_count
== 0) {
517 if (netif_running(local
->mdev
))
518 dev_close(local
->mdev
);
520 dev_close(local
->apdev
);
521 if (local
->ops
->stop
)
522 local
->ops
->stop(local_to_hw(local
));
523 tasklet_disable(&local
->tx_pending_tasklet
);
524 tasklet_disable(&local
->tasklet
);
526 if (local
->ops
->remove_interface
) {
527 struct ieee80211_if_init_conf conf
;
529 conf
.if_id
= dev
->ifindex
;
530 conf
.type
= sdata
->type
;
531 conf
.mac_addr
= dev
->dev_addr
;
532 local
->ops
->remove_interface(local_to_hw(local
), &conf
);
535 ieee80211_start_hard_monitor(local
);
540 enum netif_tx_lock_class
{
545 static inline void netif_tx_lock_nested(struct net_device
*dev
, int subclass
)
547 spin_lock_nested(&dev
->_xmit_lock
, subclass
);
548 dev
->xmit_lock_owner
= smp_processor_id();
551 static void ieee80211_set_multicast_list(struct net_device
*dev
)
553 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
554 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
555 unsigned short flags
;
557 netif_tx_lock_nested(local
->mdev
, TX_LOCK_MASTER
);
558 if (((dev
->flags
& IFF_ALLMULTI
) != 0) ^ (sdata
->allmulti
!= 0)) {
559 if (sdata
->allmulti
) {
561 local
->iff_allmultis
--;
564 local
->iff_allmultis
++;
567 if (((dev
->flags
& IFF_PROMISC
) != 0) ^ (sdata
->promisc
!= 0)) {
568 if (sdata
->promisc
) {
570 local
->iff_promiscs
--;
573 local
->iff_promiscs
++;
576 if (dev
->mc_count
!= sdata
->mc_count
) {
577 local
->mc_count
= local
->mc_count
- sdata
->mc_count
+
579 sdata
->mc_count
= dev
->mc_count
;
581 if (local
->ops
->set_multicast_list
) {
582 flags
= local
->mdev
->flags
;
583 if (local
->iff_allmultis
)
584 flags
|= IFF_ALLMULTI
;
585 if (local
->iff_promiscs
)
586 flags
|= IFF_PROMISC
;
587 read_lock(&local
->sub_if_lock
);
588 local
->ops
->set_multicast_list(local_to_hw(local
), flags
,
590 read_unlock(&local
->sub_if_lock
);
592 netif_tx_unlock(local
->mdev
);
595 /* Must not be called for mdev and apdev */
596 void ieee80211_if_setup(struct net_device
*dev
)
599 dev
->hard_start_xmit
= ieee80211_subif_start_xmit
;
600 dev
->wireless_handlers
= &ieee80211_iw_handler_def
;
601 dev
->set_multicast_list
= ieee80211_set_multicast_list
;
602 dev
->change_mtu
= ieee80211_change_mtu
;
603 dev
->get_stats
= ieee80211_get_stats
;
604 dev
->open
= ieee80211_open
;
605 dev
->stop
= ieee80211_stop
;
606 dev
->uninit
= ieee80211_if_reinit
;
607 dev
->destructor
= ieee80211_if_free
;
610 /* WDS specialties */
612 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
)
614 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
615 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
616 struct sta_info
*sta
;
618 if (compare_ether_addr(remote_addr
, sdata
->u
.wds
.remote_addr
) == 0)
621 /* Create STA entry for the new peer */
622 sta
= sta_info_add(local
, dev
, remote_addr
, GFP_KERNEL
);
627 /* Remove STA entry for the old peer */
628 sta
= sta_info_get(local
, sdata
->u
.wds
.remote_addr
);
633 printk(KERN_DEBUG
"%s: could not find STA entry for WDS link "
634 "peer " MAC_FMT
"\n",
635 dev
->name
, MAC_ARG(sdata
->u
.wds
.remote_addr
));
638 /* Update WDS link data */
639 memcpy(&sdata
->u
.wds
.remote_addr
, remote_addr
, ETH_ALEN
);
644 /* everything else */
646 static int __ieee80211_if_config(struct net_device
*dev
,
647 struct sk_buff
*beacon
,
648 struct ieee80211_tx_control
*control
)
650 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
651 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
652 struct ieee80211_if_conf conf
;
653 static u8 scan_bssid
[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
655 if (!local
->ops
->config_interface
|| !netif_running(dev
))
658 memset(&conf
, 0, sizeof(conf
));
659 conf
.type
= sdata
->type
;
660 if (sdata
->type
== IEEE80211_IF_TYPE_STA
||
661 sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
662 if (local
->sta_scanning
&&
663 local
->scan_dev
== dev
)
664 conf
.bssid
= scan_bssid
;
666 conf
.bssid
= sdata
->u
.sta
.bssid
;
667 conf
.ssid
= sdata
->u
.sta
.ssid
;
668 conf
.ssid_len
= sdata
->u
.sta
.ssid_len
;
669 conf
.generic_elem
= sdata
->u
.sta
.extra_ie
;
670 conf
.generic_elem_len
= sdata
->u
.sta
.extra_ie_len
;
671 } else if (sdata
->type
== IEEE80211_IF_TYPE_AP
) {
672 conf
.ssid
= sdata
->u
.ap
.ssid
;
673 conf
.ssid_len
= sdata
->u
.ap
.ssid_len
;
674 conf
.generic_elem
= sdata
->u
.ap
.generic_elem
;
675 conf
.generic_elem_len
= sdata
->u
.ap
.generic_elem_len
;
676 conf
.beacon
= beacon
;
677 conf
.beacon_control
= control
;
679 return local
->ops
->config_interface(local_to_hw(local
),
680 dev
->ifindex
, &conf
);
683 int ieee80211_if_config(struct net_device
*dev
)
685 return __ieee80211_if_config(dev
, NULL
, NULL
);
688 int ieee80211_if_config_beacon(struct net_device
*dev
)
690 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
691 struct ieee80211_tx_control control
;
694 if (!(local
->hw
.flags
& IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
))
696 skb
= ieee80211_beacon_get(local_to_hw(local
), dev
->ifindex
, &control
);
699 return __ieee80211_if_config(dev
, skb
, &control
);
702 int ieee80211_hw_config(struct ieee80211_local
*local
)
704 struct ieee80211_hw_mode
*mode
;
705 struct ieee80211_channel
*chan
;
708 if (local
->sta_scanning
) {
709 chan
= local
->scan_channel
;
710 mode
= local
->scan_hw_mode
;
712 chan
= local
->oper_channel
;
713 mode
= local
->oper_hw_mode
;
716 local
->hw
.conf
.channel
= chan
->chan
;
717 local
->hw
.conf
.channel_val
= chan
->val
;
718 local
->hw
.conf
.power_level
= chan
->power_level
;
719 local
->hw
.conf
.freq
= chan
->freq
;
720 local
->hw
.conf
.phymode
= mode
->mode
;
721 local
->hw
.conf
.antenna_max
= chan
->antenna_max
;
722 local
->hw
.conf
.chan
= chan
;
723 local
->hw
.conf
.mode
= mode
;
725 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
726 printk(KERN_DEBUG
"HW CONFIG: channel=%d freq=%d "
727 "phymode=%d\n", local
->hw
.conf
.channel
, local
->hw
.conf
.freq
,
728 local
->hw
.conf
.phymode
);
729 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
731 if (local
->ops
->config
)
732 ret
= local
->ops
->config(local_to_hw(local
), &local
->hw
.conf
);
737 void ieee80211_erp_info_change_notify(struct net_device
*dev
, u8 changes
)
739 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
740 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
741 if (local
->ops
->erp_ie_changed
)
742 local
->ops
->erp_ie_changed(local_to_hw(local
), changes
,
743 sdata
->use_protection
,
744 !sdata
->short_preamble
);
747 void ieee80211_reset_erp_info(struct net_device
*dev
)
749 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
751 sdata
->short_preamble
= 0;
752 sdata
->use_protection
= 0;
753 ieee80211_erp_info_change_notify(dev
,
754 IEEE80211_ERP_CHANGE_PROTECTION
|
755 IEEE80211_ERP_CHANGE_PREAMBLE
);
758 struct dev_mc_list
*ieee80211_get_mc_list_item(struct ieee80211_hw
*hw
,
759 struct dev_mc_list
*prev
,
762 struct ieee80211_local
*local
= hw_to_local(hw
);
763 struct ieee80211_sub_if_data
*sdata
= *ptr
;
764 struct dev_mc_list
*mc
;
770 if (!prev
|| !prev
->next
) {
772 sdata
= list_entry(sdata
->list
.next
,
773 struct ieee80211_sub_if_data
, list
);
775 sdata
= list_entry(local
->sub_if_list
.next
,
776 struct ieee80211_sub_if_data
, list
);
777 if (&sdata
->list
!= &local
->sub_if_list
)
778 mc
= sdata
->dev
->mc_list
;
787 EXPORT_SYMBOL(ieee80211_get_mc_list_item
);
789 void ieee80211_tx_status_irqsafe(struct ieee80211_hw
*hw
,
791 struct ieee80211_tx_status
*status
)
793 struct ieee80211_local
*local
= hw_to_local(hw
);
794 struct ieee80211_tx_status
*saved
;
797 skb
->dev
= local
->mdev
;
798 saved
= kmalloc(sizeof(struct ieee80211_tx_status
), GFP_ATOMIC
);
799 if (unlikely(!saved
)) {
801 printk(KERN_WARNING
"%s: Not enough memory, "
802 "dropping tx status", skb
->dev
->name
);
803 /* should be dev_kfree_skb_irq, but due to this function being
804 * named _irqsafe instead of just _irq we can't be sure that
805 * people won't call it from non-irq contexts */
806 dev_kfree_skb_any(skb
);
809 memcpy(saved
, status
, sizeof(struct ieee80211_tx_status
));
810 /* copy pointer to saved status into skb->cb for use by tasklet */
811 memcpy(skb
->cb
, &saved
, sizeof(saved
));
813 skb
->pkt_type
= IEEE80211_TX_STATUS_MSG
;
814 skb_queue_tail(status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
?
815 &local
->skb_queue
: &local
->skb_queue_unreliable
, skb
);
816 tmp
= skb_queue_len(&local
->skb_queue
) +
817 skb_queue_len(&local
->skb_queue_unreliable
);
818 while (tmp
> IEEE80211_IRQSAFE_QUEUE_LIMIT
&&
819 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
820 memcpy(&saved
, skb
->cb
, sizeof(saved
));
822 dev_kfree_skb_irq(skb
);
824 I802_DEBUG_INC(local
->tx_status_drop
);
826 tasklet_schedule(&local
->tasklet
);
828 EXPORT_SYMBOL(ieee80211_tx_status_irqsafe
);
830 static void ieee80211_tasklet_handler(unsigned long data
)
832 struct ieee80211_local
*local
= (struct ieee80211_local
*) data
;
834 struct ieee80211_rx_status rx_status
;
835 struct ieee80211_tx_status
*tx_status
;
837 while ((skb
= skb_dequeue(&local
->skb_queue
)) ||
838 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
839 switch (skb
->pkt_type
) {
840 case IEEE80211_RX_MSG
:
841 /* status is in skb->cb */
842 memcpy(&rx_status
, skb
->cb
, sizeof(rx_status
));
843 /* Clear skb->type in order to not confuse kernel
846 __ieee80211_rx(local_to_hw(local
), skb
, &rx_status
);
848 case IEEE80211_TX_STATUS_MSG
:
849 /* get pointer to saved status out of skb->cb */
850 memcpy(&tx_status
, skb
->cb
, sizeof(tx_status
));
852 ieee80211_tx_status(local_to_hw(local
),
856 default: /* should never get here! */
857 printk(KERN_ERR
"%s: Unknown message type (%d)\n",
858 local
->mdev
->name
, skb
->pkt_type
);
865 /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
866 * make a prepared TX frame (one that has been given to hw) to look like brand
867 * new IEEE 802.11 frame that is ready to go through TX processing again.
868 * Also, tx_packet_data in cb is restored from tx_control. */
869 static void ieee80211_remove_tx_extra(struct ieee80211_local
*local
,
870 struct ieee80211_key
*key
,
872 struct ieee80211_tx_control
*control
)
874 int hdrlen
, iv_len
, mic_len
;
875 struct ieee80211_tx_packet_data
*pkt_data
;
877 pkt_data
= (struct ieee80211_tx_packet_data
*)skb
->cb
;
878 pkt_data
->ifindex
= control
->ifindex
;
879 pkt_data
->mgmt_iface
= (control
->type
== IEEE80211_IF_TYPE_MGMT
);
880 pkt_data
->req_tx_status
= !!(control
->flags
& IEEE80211_TXCTL_REQ_TX_STATUS
);
881 pkt_data
->do_not_encrypt
= !!(control
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
);
882 pkt_data
->requeue
= !!(control
->flags
& IEEE80211_TXCTL_REQUEUE
);
883 pkt_data
->queue
= control
->queue
;
885 hdrlen
= ieee80211_get_hdrlen_from_skb(skb
);
893 mic_len
= WEP_ICV_LEN
;
896 iv_len
= TKIP_IV_LEN
;
897 mic_len
= TKIP_ICV_LEN
;
900 iv_len
= CCMP_HDR_LEN
;
901 mic_len
= CCMP_MIC_LEN
;
907 if (skb
->len
>= mic_len
&& key
->force_sw_encrypt
)
908 skb_trim(skb
, skb
->len
- mic_len
);
909 if (skb
->len
>= iv_len
&& skb
->len
> hdrlen
) {
910 memmove(skb
->data
+ iv_len
, skb
->data
, hdrlen
);
911 skb_pull(skb
, iv_len
);
916 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
917 u16 fc
= le16_to_cpu(hdr
->frame_control
);
918 if ((fc
& 0x8C) == 0x88) /* QoS Control Field */ {
919 fc
&= ~IEEE80211_STYPE_QOS_DATA
;
920 hdr
->frame_control
= cpu_to_le16(fc
);
921 memmove(skb
->data
+ 2, skb
->data
, hdrlen
- 2);
927 void ieee80211_tx_status(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
928 struct ieee80211_tx_status
*status
)
930 struct sk_buff
*skb2
;
931 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
932 struct ieee80211_local
*local
= hw_to_local(hw
);
935 struct ieee80211_tx_status_rtap_hdr
*rthdr
;
936 struct ieee80211_sub_if_data
*sdata
;
941 "%s: ieee80211_tx_status called with NULL status\n",
947 if (status
->excessive_retries
) {
948 struct sta_info
*sta
;
949 sta
= sta_info_get(local
, hdr
->addr1
);
951 if (sta
->flags
& WLAN_STA_PS
) {
952 /* The STA is in power save mode, so assume
953 * that this TX packet failed because of that.
955 status
->excessive_retries
= 0;
956 status
->flags
|= IEEE80211_TX_STATUS_TX_FILTERED
;
962 if (status
->flags
& IEEE80211_TX_STATUS_TX_FILTERED
) {
963 struct sta_info
*sta
;
964 sta
= sta_info_get(local
, hdr
->addr1
);
966 sta
->tx_filtered_count
++;
968 /* Clear the TX filter mask for this STA when sending
969 * the next packet. If the STA went to power save mode,
970 * this will happen when it is waking up for the next
972 sta
->clear_dst_mask
= 1;
974 /* TODO: Is the WLAN_STA_PS flag always set here or is
975 * the race between RX and TX status causing some
976 * packets to be filtered out before 80211.o gets an
977 * update for PS status? This seems to be the case, so
978 * no changes are likely to be needed. */
979 if (sta
->flags
& WLAN_STA_PS
&&
980 skb_queue_len(&sta
->tx_filtered
) <
982 ieee80211_remove_tx_extra(local
, sta
->key
,
985 skb_queue_tail(&sta
->tx_filtered
, skb
);
986 } else if (!(sta
->flags
& WLAN_STA_PS
) &&
987 !(status
->control
.flags
& IEEE80211_TXCTL_REQUEUE
)) {
988 /* Software retry the packet once */
989 status
->control
.flags
|= IEEE80211_TXCTL_REQUEUE
;
990 ieee80211_remove_tx_extra(local
, sta
->key
,
995 if (net_ratelimit()) {
996 printk(KERN_DEBUG
"%s: dropped TX "
997 "filtered frame queue_len=%d "
1002 !!(sta
->flags
& WLAN_STA_PS
),
1011 /* FIXME: STUPID to call this with both local and local->mdev */
1012 rate_control_tx_status(local
, local
->mdev
, skb
, status
);
1015 ieee80211_led_tx(local
, 0);
1018 * Fragments are passed to low-level drivers as separate skbs, so these
1019 * are actually fragments, not frames. Update frame counters only for
1020 * the first fragment of the frame. */
1022 frag
= le16_to_cpu(hdr
->seq_ctrl
) & IEEE80211_SCTL_FRAG
;
1023 type
= le16_to_cpu(hdr
->frame_control
) & IEEE80211_FCTL_FTYPE
;
1025 if (status
->flags
& IEEE80211_TX_STATUS_ACK
) {
1027 local
->dot11TransmittedFrameCount
++;
1028 if (is_multicast_ether_addr(hdr
->addr1
))
1029 local
->dot11MulticastTransmittedFrameCount
++;
1030 if (status
->retry_count
> 0)
1031 local
->dot11RetryCount
++;
1032 if (status
->retry_count
> 1)
1033 local
->dot11MultipleRetryCount
++;
1036 /* This counter shall be incremented for an acknowledged MPDU
1037 * with an individual address in the address 1 field or an MPDU
1038 * with a multicast address in the address 1 field of type Data
1040 if (!is_multicast_ether_addr(hdr
->addr1
) ||
1041 type
== IEEE80211_FTYPE_DATA
||
1042 type
== IEEE80211_FTYPE_MGMT
)
1043 local
->dot11TransmittedFragmentCount
++;
1046 local
->dot11FailedCount
++;
1049 msg_type
= (status
->flags
& IEEE80211_TX_STATUS_ACK
) ?
1050 ieee80211_msg_tx_callback_ack
: ieee80211_msg_tx_callback_fail
;
1052 /* this was a transmitted frame, but now we want to reuse it */
1055 if ((status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
) &&
1057 if (local
->monitors
) {
1058 skb2
= skb_clone(skb
, GFP_ATOMIC
);
1065 /* Send frame to hostapd */
1066 ieee80211_rx_mgmt(local
, skb2
, NULL
, msg_type
);
1072 if (!local
->monitors
) {
1077 /* send frame to monitor interfaces now */
1079 if (skb_headroom(skb
) < sizeof(*rthdr
)) {
1080 printk(KERN_ERR
"ieee80211_tx_status: headroom too small\n");
1085 rthdr
= (struct ieee80211_tx_status_rtap_hdr
*)
1086 skb_push(skb
, sizeof(*rthdr
));
1088 memset(rthdr
, 0, sizeof(*rthdr
));
1089 rthdr
->hdr
.it_len
= cpu_to_le16(sizeof(*rthdr
));
1090 rthdr
->hdr
.it_present
=
1091 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS
) |
1092 (1 << IEEE80211_RADIOTAP_DATA_RETRIES
));
1094 if (!(status
->flags
& IEEE80211_TX_STATUS_ACK
) &&
1095 !is_multicast_ether_addr(hdr
->addr1
))
1096 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL
);
1098 if ((status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
) &&
1099 (status
->control
.flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
))
1100 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS
);
1101 else if (status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
)
1102 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS
);
1104 rthdr
->data_retries
= status
->retry_count
;
1106 read_lock(&local
->sub_if_lock
);
1107 monitors
= local
->monitors
;
1108 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
1110 * Using the monitors counter is possibly racy, but
1111 * if the value is wrong we simply either clone the skb
1112 * once too much or forget sending it to one monitor iface
1113 * The latter case isn't nice but fixing the race is much
1116 if (!monitors
|| !skb
)
1119 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
1120 if (!netif_running(sdata
->dev
))
1124 skb2
= skb_clone(skb
, GFP_KERNEL
);
1127 skb
->dev
= sdata
->dev
;
1128 /* XXX: is this sufficient for BPF? */
1129 skb_set_mac_header(skb
, 0);
1130 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1131 skb
->pkt_type
= PACKET_OTHERHOST
;
1132 skb
->protocol
= htons(ETH_P_802_2
);
1133 memset(skb
->cb
, 0, sizeof(skb
->cb
));
1139 read_unlock(&local
->sub_if_lock
);
1143 EXPORT_SYMBOL(ieee80211_tx_status
);
1145 struct ieee80211_hw
*ieee80211_alloc_hw(size_t priv_data_len
,
1146 const struct ieee80211_ops
*ops
)
1148 struct net_device
*mdev
;
1149 struct ieee80211_local
*local
;
1150 struct ieee80211_sub_if_data
*sdata
;
1152 struct wiphy
*wiphy
;
1154 /* Ensure 32-byte alignment of our private data and hw private data.
1155 * We use the wiphy priv data for both our ieee80211_local and for
1156 * the driver's private data
1158 * In memory it'll be like this:
1160 * +-------------------------+
1162 * +-------------------------+
1163 * | struct ieee80211_local |
1164 * +-------------------------+
1165 * | driver's private data |
1166 * +-------------------------+
1169 priv_size
= ((sizeof(struct ieee80211_local
) +
1170 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
) +
1173 wiphy
= wiphy_new(&mac80211_config_ops
, priv_size
);
1178 wiphy
->privid
= mac80211_wiphy_privid
;
1180 local
= wiphy_priv(wiphy
);
1181 local
->hw
.wiphy
= wiphy
;
1183 local
->hw
.priv
= (char *)local
+
1184 ((sizeof(struct ieee80211_local
) +
1185 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
);
1188 BUG_ON(!ops
->config
);
1189 BUG_ON(!ops
->add_interface
);
1192 /* for now, mdev needs sub_if_data :/ */
1193 mdev
= alloc_netdev(sizeof(struct ieee80211_sub_if_data
),
1194 "wmaster%d", ether_setup
);
1200 sdata
= IEEE80211_DEV_TO_SUB_IF(mdev
);
1201 mdev
->ieee80211_ptr
= &sdata
->wdev
;
1202 sdata
->wdev
.wiphy
= wiphy
;
1204 local
->hw
.queues
= 1; /* default */
1207 local
->rx_pre_handlers
= ieee80211_rx_pre_handlers
;
1208 local
->rx_handlers
= ieee80211_rx_handlers
;
1209 local
->tx_handlers
= ieee80211_tx_handlers
;
1211 local
->bridge_packets
= 1;
1213 local
->rts_threshold
= IEEE80211_MAX_RTS_THRESHOLD
;
1214 local
->fragmentation_threshold
= IEEE80211_MAX_FRAG_THRESHOLD
;
1215 local
->short_retry_limit
= 7;
1216 local
->long_retry_limit
= 4;
1217 local
->hw
.conf
.radio_enabled
= 1;
1219 local
->enabled_modes
= (unsigned int) -1;
1221 INIT_LIST_HEAD(&local
->modes_list
);
1223 rwlock_init(&local
->sub_if_lock
);
1224 INIT_LIST_HEAD(&local
->sub_if_list
);
1226 INIT_DELAYED_WORK(&local
->scan_work
, ieee80211_sta_scan_work
);
1227 ieee80211_rx_bss_list_init(mdev
);
1229 sta_info_init(local
);
1231 mdev
->hard_start_xmit
= ieee80211_master_start_xmit
;
1232 mdev
->open
= ieee80211_master_open
;
1233 mdev
->stop
= ieee80211_master_stop
;
1234 mdev
->type
= ARPHRD_IEEE80211
;
1235 mdev
->hard_header_parse
= header_parse_80211
;
1237 sdata
->type
= IEEE80211_IF_TYPE_AP
;
1239 sdata
->local
= local
;
1240 sdata
->u
.ap
.force_unicast_rateidx
= -1;
1241 sdata
->u
.ap
.max_ratectrl_rateidx
= -1;
1242 ieee80211_if_sdata_init(sdata
);
1243 list_add_tail(&sdata
->list
, &local
->sub_if_list
);
1245 tasklet_init(&local
->tx_pending_tasklet
, ieee80211_tx_pending
,
1246 (unsigned long)local
);
1247 tasklet_disable(&local
->tx_pending_tasklet
);
1249 tasklet_init(&local
->tasklet
,
1250 ieee80211_tasklet_handler
,
1251 (unsigned long) local
);
1252 tasklet_disable(&local
->tasklet
);
1254 skb_queue_head_init(&local
->skb_queue
);
1255 skb_queue_head_init(&local
->skb_queue_unreliable
);
1257 return local_to_hw(local
);
1259 EXPORT_SYMBOL(ieee80211_alloc_hw
);
1261 int ieee80211_register_hw(struct ieee80211_hw
*hw
)
1263 struct ieee80211_local
*local
= hw_to_local(hw
);
1267 result
= wiphy_register(local
->hw
.wiphy
);
1271 name
= wiphy_dev(local
->hw
.wiphy
)->driver
->name
;
1272 local
->hw
.workqueue
= create_singlethread_workqueue(name
);
1273 if (!local
->hw
.workqueue
) {
1275 goto fail_workqueue
;
1279 * The hardware needs headroom for sending the frame,
1280 * and we need some headroom for passing the frame to monitor
1281 * interfaces, but never both at the same time.
1283 local
->tx_headroom
= max_t(unsigned int , local
->hw
.extra_tx_headroom
,
1284 sizeof(struct ieee80211_tx_status_rtap_hdr
));
1286 debugfs_hw_add(local
);
1288 local
->hw
.conf
.beacon_int
= 1000;
1290 local
->wstats_flags
|= local
->hw
.max_rssi
?
1291 IW_QUAL_LEVEL_UPDATED
: IW_QUAL_LEVEL_INVALID
;
1292 local
->wstats_flags
|= local
->hw
.max_signal
?
1293 IW_QUAL_QUAL_UPDATED
: IW_QUAL_QUAL_INVALID
;
1294 local
->wstats_flags
|= local
->hw
.max_noise
?
1295 IW_QUAL_NOISE_UPDATED
: IW_QUAL_NOISE_INVALID
;
1296 if (local
->hw
.max_rssi
< 0 || local
->hw
.max_noise
< 0)
1297 local
->wstats_flags
|= IW_QUAL_DBM
;
1299 result
= sta_info_start(local
);
1304 result
= dev_alloc_name(local
->mdev
, local
->mdev
->name
);
1308 memcpy(local
->mdev
->dev_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1309 SET_NETDEV_DEV(local
->mdev
, wiphy_dev(local
->hw
.wiphy
));
1311 result
= register_netdevice(local
->mdev
);
1315 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1317 result
= ieee80211_init_rate_ctrl_alg(local
, NULL
);
1319 printk(KERN_DEBUG
"%s: Failed to initialize rate control "
1320 "algorithm\n", local
->mdev
->name
);
1324 result
= ieee80211_wep_init(local
);
1327 printk(KERN_DEBUG
"%s: Failed to initialize wep\n",
1332 ieee80211_install_qdisc(local
->mdev
);
1334 /* add one default STA interface */
1335 result
= ieee80211_if_add(local
->mdev
, "wlan%d", NULL
,
1336 IEEE80211_IF_TYPE_STA
);
1338 printk(KERN_WARNING
"%s: Failed to add default virtual iface\n",
1341 local
->reg_state
= IEEE80211_DEV_REGISTERED
;
1344 ieee80211_led_init(local
);
1349 rate_control_deinitialize(local
);
1351 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1352 unregister_netdevice(local
->mdev
);
1355 sta_info_stop(local
);
1357 debugfs_hw_del(local
);
1358 destroy_workqueue(local
->hw
.workqueue
);
1360 wiphy_unregister(local
->hw
.wiphy
);
1363 EXPORT_SYMBOL(ieee80211_register_hw
);
1365 int ieee80211_register_hwmode(struct ieee80211_hw
*hw
,
1366 struct ieee80211_hw_mode
*mode
)
1368 struct ieee80211_local
*local
= hw_to_local(hw
);
1369 struct ieee80211_rate
*rate
;
1372 INIT_LIST_HEAD(&mode
->list
);
1373 list_add_tail(&mode
->list
, &local
->modes_list
);
1375 local
->hw_modes
|= (1 << mode
->mode
);
1376 for (i
= 0; i
< mode
->num_rates
; i
++) {
1377 rate
= &(mode
->rates
[i
]);
1378 rate
->rate_inv
= CHAN_UTIL_RATE_LCM
/ rate
->rate
;
1380 ieee80211_prepare_rates(local
, mode
);
1382 if (!local
->oper_hw_mode
) {
1383 /* Default to this mode */
1384 local
->hw
.conf
.phymode
= mode
->mode
;
1385 local
->oper_hw_mode
= local
->scan_hw_mode
= mode
;
1386 local
->oper_channel
= local
->scan_channel
= &mode
->channels
[0];
1387 local
->hw
.conf
.mode
= local
->oper_hw_mode
;
1388 local
->hw
.conf
.chan
= local
->oper_channel
;
1391 if (!(hw
->flags
& IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED
))
1392 ieee80211_set_default_regdomain(mode
);
1396 EXPORT_SYMBOL(ieee80211_register_hwmode
);
1398 void ieee80211_unregister_hw(struct ieee80211_hw
*hw
)
1400 struct ieee80211_local
*local
= hw_to_local(hw
);
1401 struct ieee80211_sub_if_data
*sdata
, *tmp
;
1402 struct list_head tmp_list
;
1405 tasklet_kill(&local
->tx_pending_tasklet
);
1406 tasklet_kill(&local
->tasklet
);
1410 BUG_ON(local
->reg_state
!= IEEE80211_DEV_REGISTERED
);
1412 local
->reg_state
= IEEE80211_DEV_UNREGISTERED
;
1414 ieee80211_if_del_mgmt(local
);
1416 write_lock_bh(&local
->sub_if_lock
);
1417 list_replace_init(&local
->sub_if_list
, &tmp_list
);
1418 write_unlock_bh(&local
->sub_if_lock
);
1420 list_for_each_entry_safe(sdata
, tmp
, &tmp_list
, list
)
1421 __ieee80211_if_del(local
, sdata
);
1425 ieee80211_rx_bss_list_deinit(local
->mdev
);
1426 ieee80211_clear_tx_pending(local
);
1427 sta_info_stop(local
);
1428 rate_control_deinitialize(local
);
1429 debugfs_hw_del(local
);
1431 for (i
= 0; i
< NUM_IEEE80211_MODES
; i
++) {
1432 kfree(local
->supp_rates
[i
]);
1433 kfree(local
->basic_rates
[i
]);
1436 if (skb_queue_len(&local
->skb_queue
)
1437 || skb_queue_len(&local
->skb_queue_unreliable
))
1438 printk(KERN_WARNING
"%s: skb_queue not empty\n",
1440 skb_queue_purge(&local
->skb_queue
);
1441 skb_queue_purge(&local
->skb_queue_unreliable
);
1443 destroy_workqueue(local
->hw
.workqueue
);
1444 wiphy_unregister(local
->hw
.wiphy
);
1445 ieee80211_wep_free(local
);
1446 ieee80211_led_exit(local
);
1448 EXPORT_SYMBOL(ieee80211_unregister_hw
);
1450 void ieee80211_free_hw(struct ieee80211_hw
*hw
)
1452 struct ieee80211_local
*local
= hw_to_local(hw
);
1454 ieee80211_if_free(local
->mdev
);
1455 wiphy_free(local
->hw
.wiphy
);
1457 EXPORT_SYMBOL(ieee80211_free_hw
);
1459 struct net_device_stats
*ieee80211_dev_stats(struct net_device
*dev
)
1461 struct ieee80211_sub_if_data
*sdata
;
1462 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1463 return &sdata
->stats
;
1466 static int __init
ieee80211_init(void)
1468 struct sk_buff
*skb
;
1471 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data
) > sizeof(skb
->cb
));
1473 ret
= ieee80211_wme_register();
1475 printk(KERN_DEBUG
"ieee80211_init: failed to "
1476 "initialize WME (err=%d)\n", ret
);
1480 ieee80211_debugfs_netdev_init();
1481 ieee80211_regdomain_init();
1486 static void __exit
ieee80211_exit(void)
1488 ieee80211_wme_unregister();
1489 ieee80211_debugfs_netdev_exit();
1493 subsys_initcall(ieee80211_init
);
1494 module_exit(ieee80211_exit
);
1496 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1497 MODULE_LICENSE("GPL");