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
.flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
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) ^
559 ((sdata
->flags
& IEEE80211_SDATA_ALLMULTI
) != 0)) {
560 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
561 local
->iff_allmultis
--;
563 local
->iff_allmultis
++;
564 sdata
->flags
^= IEEE80211_SDATA_ALLMULTI
;
566 if (((dev
->flags
& IFF_PROMISC
) != 0) ^
567 ((sdata
->flags
& IEEE80211_SDATA_PROMISC
) != 0)) {
568 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
569 local
->iff_promiscs
--;
571 local
->iff_promiscs
++;
572 sdata
->flags
^= IEEE80211_SDATA_PROMISC
;
574 if (dev
->mc_count
!= sdata
->mc_count
) {
575 local
->mc_count
= local
->mc_count
- sdata
->mc_count
+
577 sdata
->mc_count
= dev
->mc_count
;
579 if (local
->ops
->set_multicast_list
) {
580 flags
= local
->mdev
->flags
;
581 if (local
->iff_allmultis
)
582 flags
|= IFF_ALLMULTI
;
583 if (local
->iff_promiscs
)
584 flags
|= IFF_PROMISC
;
585 read_lock(&local
->sub_if_lock
);
586 local
->ops
->set_multicast_list(local_to_hw(local
), flags
,
588 read_unlock(&local
->sub_if_lock
);
590 netif_tx_unlock(local
->mdev
);
593 /* Must not be called for mdev and apdev */
594 void ieee80211_if_setup(struct net_device
*dev
)
597 dev
->hard_start_xmit
= ieee80211_subif_start_xmit
;
598 dev
->wireless_handlers
= &ieee80211_iw_handler_def
;
599 dev
->set_multicast_list
= ieee80211_set_multicast_list
;
600 dev
->change_mtu
= ieee80211_change_mtu
;
601 dev
->get_stats
= ieee80211_get_stats
;
602 dev
->open
= ieee80211_open
;
603 dev
->stop
= ieee80211_stop
;
604 dev
->uninit
= ieee80211_if_reinit
;
605 dev
->destructor
= ieee80211_if_free
;
608 /* WDS specialties */
610 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
)
612 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
613 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
614 struct sta_info
*sta
;
616 if (compare_ether_addr(remote_addr
, sdata
->u
.wds
.remote_addr
) == 0)
619 /* Create STA entry for the new peer */
620 sta
= sta_info_add(local
, dev
, remote_addr
, GFP_KERNEL
);
625 /* Remove STA entry for the old peer */
626 sta
= sta_info_get(local
, sdata
->u
.wds
.remote_addr
);
631 printk(KERN_DEBUG
"%s: could not find STA entry for WDS link "
632 "peer " MAC_FMT
"\n",
633 dev
->name
, MAC_ARG(sdata
->u
.wds
.remote_addr
));
636 /* Update WDS link data */
637 memcpy(&sdata
->u
.wds
.remote_addr
, remote_addr
, ETH_ALEN
);
642 /* everything else */
644 static int __ieee80211_if_config(struct net_device
*dev
,
645 struct sk_buff
*beacon
,
646 struct ieee80211_tx_control
*control
)
648 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
649 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
650 struct ieee80211_if_conf conf
;
651 static u8 scan_bssid
[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
653 if (!local
->ops
->config_interface
|| !netif_running(dev
))
656 memset(&conf
, 0, sizeof(conf
));
657 conf
.type
= sdata
->type
;
658 if (sdata
->type
== IEEE80211_IF_TYPE_STA
||
659 sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
660 if (local
->sta_scanning
&&
661 local
->scan_dev
== dev
)
662 conf
.bssid
= scan_bssid
;
664 conf
.bssid
= sdata
->u
.sta
.bssid
;
665 conf
.ssid
= sdata
->u
.sta
.ssid
;
666 conf
.ssid_len
= sdata
->u
.sta
.ssid_len
;
667 conf
.generic_elem
= sdata
->u
.sta
.extra_ie
;
668 conf
.generic_elem_len
= sdata
->u
.sta
.extra_ie_len
;
669 } else if (sdata
->type
== IEEE80211_IF_TYPE_AP
) {
670 conf
.ssid
= sdata
->u
.ap
.ssid
;
671 conf
.ssid_len
= sdata
->u
.ap
.ssid_len
;
672 conf
.generic_elem
= sdata
->u
.ap
.generic_elem
;
673 conf
.generic_elem_len
= sdata
->u
.ap
.generic_elem_len
;
674 conf
.beacon
= beacon
;
675 conf
.beacon_control
= control
;
677 return local
->ops
->config_interface(local_to_hw(local
),
678 dev
->ifindex
, &conf
);
681 int ieee80211_if_config(struct net_device
*dev
)
683 return __ieee80211_if_config(dev
, NULL
, NULL
);
686 int ieee80211_if_config_beacon(struct net_device
*dev
)
688 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
689 struct ieee80211_tx_control control
;
692 if (!(local
->hw
.flags
& IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
))
694 skb
= ieee80211_beacon_get(local_to_hw(local
), dev
->ifindex
, &control
);
697 return __ieee80211_if_config(dev
, skb
, &control
);
700 int ieee80211_hw_config(struct ieee80211_local
*local
)
702 struct ieee80211_hw_mode
*mode
;
703 struct ieee80211_channel
*chan
;
706 if (local
->sta_scanning
) {
707 chan
= local
->scan_channel
;
708 mode
= local
->scan_hw_mode
;
710 chan
= local
->oper_channel
;
711 mode
= local
->oper_hw_mode
;
714 local
->hw
.conf
.channel
= chan
->chan
;
715 local
->hw
.conf
.channel_val
= chan
->val
;
716 local
->hw
.conf
.power_level
= chan
->power_level
;
717 local
->hw
.conf
.freq
= chan
->freq
;
718 local
->hw
.conf
.phymode
= mode
->mode
;
719 local
->hw
.conf
.antenna_max
= chan
->antenna_max
;
720 local
->hw
.conf
.chan
= chan
;
721 local
->hw
.conf
.mode
= mode
;
723 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
724 printk(KERN_DEBUG
"HW CONFIG: channel=%d freq=%d "
725 "phymode=%d\n", local
->hw
.conf
.channel
, local
->hw
.conf
.freq
,
726 local
->hw
.conf
.phymode
);
727 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
729 if (local
->ops
->config
)
730 ret
= local
->ops
->config(local_to_hw(local
), &local
->hw
.conf
);
735 void ieee80211_erp_info_change_notify(struct net_device
*dev
, u8 changes
)
737 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
738 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
739 if (local
->ops
->erp_ie_changed
)
740 local
->ops
->erp_ie_changed(local_to_hw(local
), changes
,
741 !!(sdata
->flags
& IEEE80211_SDATA_USE_PROTECTION
),
742 !(sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
));
745 void ieee80211_reset_erp_info(struct net_device
*dev
)
747 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
749 sdata
->flags
&= ~(IEEE80211_SDATA_USE_PROTECTION
|
750 IEEE80211_SDATA_SHORT_PREAMBLE
);
751 ieee80211_erp_info_change_notify(dev
,
752 IEEE80211_ERP_CHANGE_PROTECTION
|
753 IEEE80211_ERP_CHANGE_PREAMBLE
);
756 struct dev_mc_list
*ieee80211_get_mc_list_item(struct ieee80211_hw
*hw
,
757 struct dev_mc_list
*prev
,
760 struct ieee80211_local
*local
= hw_to_local(hw
);
761 struct ieee80211_sub_if_data
*sdata
= *ptr
;
762 struct dev_mc_list
*mc
;
768 if (!prev
|| !prev
->next
) {
770 sdata
= list_entry(sdata
->list
.next
,
771 struct ieee80211_sub_if_data
, list
);
773 sdata
= list_entry(local
->sub_if_list
.next
,
774 struct ieee80211_sub_if_data
, list
);
775 if (&sdata
->list
!= &local
->sub_if_list
)
776 mc
= sdata
->dev
->mc_list
;
785 EXPORT_SYMBOL(ieee80211_get_mc_list_item
);
787 void ieee80211_tx_status_irqsafe(struct ieee80211_hw
*hw
,
789 struct ieee80211_tx_status
*status
)
791 struct ieee80211_local
*local
= hw_to_local(hw
);
792 struct ieee80211_tx_status
*saved
;
795 skb
->dev
= local
->mdev
;
796 saved
= kmalloc(sizeof(struct ieee80211_tx_status
), GFP_ATOMIC
);
797 if (unlikely(!saved
)) {
799 printk(KERN_WARNING
"%s: Not enough memory, "
800 "dropping tx status", skb
->dev
->name
);
801 /* should be dev_kfree_skb_irq, but due to this function being
802 * named _irqsafe instead of just _irq we can't be sure that
803 * people won't call it from non-irq contexts */
804 dev_kfree_skb_any(skb
);
807 memcpy(saved
, status
, sizeof(struct ieee80211_tx_status
));
808 /* copy pointer to saved status into skb->cb for use by tasklet */
809 memcpy(skb
->cb
, &saved
, sizeof(saved
));
811 skb
->pkt_type
= IEEE80211_TX_STATUS_MSG
;
812 skb_queue_tail(status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
?
813 &local
->skb_queue
: &local
->skb_queue_unreliable
, skb
);
814 tmp
= skb_queue_len(&local
->skb_queue
) +
815 skb_queue_len(&local
->skb_queue_unreliable
);
816 while (tmp
> IEEE80211_IRQSAFE_QUEUE_LIMIT
&&
817 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
818 memcpy(&saved
, skb
->cb
, sizeof(saved
));
820 dev_kfree_skb_irq(skb
);
822 I802_DEBUG_INC(local
->tx_status_drop
);
824 tasklet_schedule(&local
->tasklet
);
826 EXPORT_SYMBOL(ieee80211_tx_status_irqsafe
);
828 static void ieee80211_tasklet_handler(unsigned long data
)
830 struct ieee80211_local
*local
= (struct ieee80211_local
*) data
;
832 struct ieee80211_rx_status rx_status
;
833 struct ieee80211_tx_status
*tx_status
;
835 while ((skb
= skb_dequeue(&local
->skb_queue
)) ||
836 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
837 switch (skb
->pkt_type
) {
838 case IEEE80211_RX_MSG
:
839 /* status is in skb->cb */
840 memcpy(&rx_status
, skb
->cb
, sizeof(rx_status
));
841 /* Clear skb->type in order to not confuse kernel
844 __ieee80211_rx(local_to_hw(local
), skb
, &rx_status
);
846 case IEEE80211_TX_STATUS_MSG
:
847 /* get pointer to saved status out of skb->cb */
848 memcpy(&tx_status
, skb
->cb
, sizeof(tx_status
));
850 ieee80211_tx_status(local_to_hw(local
),
854 default: /* should never get here! */
855 printk(KERN_ERR
"%s: Unknown message type (%d)\n",
856 local
->mdev
->name
, skb
->pkt_type
);
863 /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
864 * make a prepared TX frame (one that has been given to hw) to look like brand
865 * new IEEE 802.11 frame that is ready to go through TX processing again.
866 * Also, tx_packet_data in cb is restored from tx_control. */
867 static void ieee80211_remove_tx_extra(struct ieee80211_local
*local
,
868 struct ieee80211_key
*key
,
870 struct ieee80211_tx_control
*control
)
872 int hdrlen
, iv_len
, mic_len
;
873 struct ieee80211_tx_packet_data
*pkt_data
;
875 pkt_data
= (struct ieee80211_tx_packet_data
*)skb
->cb
;
876 pkt_data
->ifindex
= control
->ifindex
;
878 if (control
->flags
& IEEE80211_TXCTL_REQ_TX_STATUS
)
879 pkt_data
->flags
|= IEEE80211_TXPD_REQ_TX_STATUS
;
880 if (control
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
)
881 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
882 if (control
->flags
& IEEE80211_TXCTL_REQUEUE
)
883 pkt_data
->flags
|= IEEE80211_TXPD_REQUEUE
;
884 if (control
->type
== IEEE80211_IF_TYPE_MGMT
)
885 pkt_data
->flags
|= IEEE80211_TXPD_MGMT_IFACE
;
886 pkt_data
->queue
= control
->queue
;
888 hdrlen
= ieee80211_get_hdrlen_from_skb(skb
);
893 switch (key
->conf
.alg
) {
896 mic_len
= WEP_ICV_LEN
;
899 iv_len
= TKIP_IV_LEN
;
900 mic_len
= TKIP_ICV_LEN
;
903 iv_len
= CCMP_HDR_LEN
;
904 mic_len
= CCMP_MIC_LEN
;
910 if (skb
->len
>= mic_len
&&
911 (key
->conf
.flags
& IEEE80211_KEY_FORCE_SW_ENCRYPT
))
912 skb_trim(skb
, skb
->len
- mic_len
);
913 if (skb
->len
>= iv_len
&& skb
->len
> hdrlen
) {
914 memmove(skb
->data
+ iv_len
, skb
->data
, hdrlen
);
915 skb_pull(skb
, iv_len
);
920 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
921 u16 fc
= le16_to_cpu(hdr
->frame_control
);
922 if ((fc
& 0x8C) == 0x88) /* QoS Control Field */ {
923 fc
&= ~IEEE80211_STYPE_QOS_DATA
;
924 hdr
->frame_control
= cpu_to_le16(fc
);
925 memmove(skb
->data
+ 2, skb
->data
, hdrlen
- 2);
931 void ieee80211_tx_status(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
932 struct ieee80211_tx_status
*status
)
934 struct sk_buff
*skb2
;
935 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
936 struct ieee80211_local
*local
= hw_to_local(hw
);
939 struct ieee80211_tx_status_rtap_hdr
*rthdr
;
940 struct ieee80211_sub_if_data
*sdata
;
945 "%s: ieee80211_tx_status called with NULL status\n",
951 if (status
->excessive_retries
) {
952 struct sta_info
*sta
;
953 sta
= sta_info_get(local
, hdr
->addr1
);
955 if (sta
->flags
& WLAN_STA_PS
) {
956 /* The STA is in power save mode, so assume
957 * that this TX packet failed because of that.
959 status
->excessive_retries
= 0;
960 status
->flags
|= IEEE80211_TX_STATUS_TX_FILTERED
;
966 if (status
->flags
& IEEE80211_TX_STATUS_TX_FILTERED
) {
967 struct sta_info
*sta
;
968 sta
= sta_info_get(local
, hdr
->addr1
);
970 sta
->tx_filtered_count
++;
972 /* Clear the TX filter mask for this STA when sending
973 * the next packet. If the STA went to power save mode,
974 * this will happen when it is waking up for the next
976 sta
->clear_dst_mask
= 1;
978 /* TODO: Is the WLAN_STA_PS flag always set here or is
979 * the race between RX and TX status causing some
980 * packets to be filtered out before 80211.o gets an
981 * update for PS status? This seems to be the case, so
982 * no changes are likely to be needed. */
983 if (sta
->flags
& WLAN_STA_PS
&&
984 skb_queue_len(&sta
->tx_filtered
) <
986 ieee80211_remove_tx_extra(local
, sta
->key
,
989 skb_queue_tail(&sta
->tx_filtered
, skb
);
990 } else if (!(sta
->flags
& WLAN_STA_PS
) &&
991 !(status
->control
.flags
& IEEE80211_TXCTL_REQUEUE
)) {
992 /* Software retry the packet once */
993 status
->control
.flags
|= IEEE80211_TXCTL_REQUEUE
;
994 ieee80211_remove_tx_extra(local
, sta
->key
,
999 if (net_ratelimit()) {
1000 printk(KERN_DEBUG
"%s: dropped TX "
1001 "filtered frame queue_len=%d "
1006 !!(sta
->flags
& WLAN_STA_PS
),
1015 /* FIXME: STUPID to call this with both local and local->mdev */
1016 rate_control_tx_status(local
, local
->mdev
, skb
, status
);
1019 ieee80211_led_tx(local
, 0);
1022 * Fragments are passed to low-level drivers as separate skbs, so these
1023 * are actually fragments, not frames. Update frame counters only for
1024 * the first fragment of the frame. */
1026 frag
= le16_to_cpu(hdr
->seq_ctrl
) & IEEE80211_SCTL_FRAG
;
1027 type
= le16_to_cpu(hdr
->frame_control
) & IEEE80211_FCTL_FTYPE
;
1029 if (status
->flags
& IEEE80211_TX_STATUS_ACK
) {
1031 local
->dot11TransmittedFrameCount
++;
1032 if (is_multicast_ether_addr(hdr
->addr1
))
1033 local
->dot11MulticastTransmittedFrameCount
++;
1034 if (status
->retry_count
> 0)
1035 local
->dot11RetryCount
++;
1036 if (status
->retry_count
> 1)
1037 local
->dot11MultipleRetryCount
++;
1040 /* This counter shall be incremented for an acknowledged MPDU
1041 * with an individual address in the address 1 field or an MPDU
1042 * with a multicast address in the address 1 field of type Data
1044 if (!is_multicast_ether_addr(hdr
->addr1
) ||
1045 type
== IEEE80211_FTYPE_DATA
||
1046 type
== IEEE80211_FTYPE_MGMT
)
1047 local
->dot11TransmittedFragmentCount
++;
1050 local
->dot11FailedCount
++;
1053 msg_type
= (status
->flags
& IEEE80211_TX_STATUS_ACK
) ?
1054 ieee80211_msg_tx_callback_ack
: ieee80211_msg_tx_callback_fail
;
1056 /* this was a transmitted frame, but now we want to reuse it */
1059 if ((status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
) &&
1061 if (local
->monitors
) {
1062 skb2
= skb_clone(skb
, GFP_ATOMIC
);
1069 /* Send frame to hostapd */
1070 ieee80211_rx_mgmt(local
, skb2
, NULL
, msg_type
);
1076 if (!local
->monitors
) {
1081 /* send frame to monitor interfaces now */
1083 if (skb_headroom(skb
) < sizeof(*rthdr
)) {
1084 printk(KERN_ERR
"ieee80211_tx_status: headroom too small\n");
1089 rthdr
= (struct ieee80211_tx_status_rtap_hdr
*)
1090 skb_push(skb
, sizeof(*rthdr
));
1092 memset(rthdr
, 0, sizeof(*rthdr
));
1093 rthdr
->hdr
.it_len
= cpu_to_le16(sizeof(*rthdr
));
1094 rthdr
->hdr
.it_present
=
1095 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS
) |
1096 (1 << IEEE80211_RADIOTAP_DATA_RETRIES
));
1098 if (!(status
->flags
& IEEE80211_TX_STATUS_ACK
) &&
1099 !is_multicast_ether_addr(hdr
->addr1
))
1100 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL
);
1102 if ((status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
) &&
1103 (status
->control
.flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
))
1104 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS
);
1105 else if (status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
)
1106 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS
);
1108 rthdr
->data_retries
= status
->retry_count
;
1110 read_lock(&local
->sub_if_lock
);
1111 monitors
= local
->monitors
;
1112 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
1114 * Using the monitors counter is possibly racy, but
1115 * if the value is wrong we simply either clone the skb
1116 * once too much or forget sending it to one monitor iface
1117 * The latter case isn't nice but fixing the race is much
1120 if (!monitors
|| !skb
)
1123 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
1124 if (!netif_running(sdata
->dev
))
1128 skb2
= skb_clone(skb
, GFP_KERNEL
);
1131 skb
->dev
= sdata
->dev
;
1132 /* XXX: is this sufficient for BPF? */
1133 skb_set_mac_header(skb
, 0);
1134 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1135 skb
->pkt_type
= PACKET_OTHERHOST
;
1136 skb
->protocol
= htons(ETH_P_802_2
);
1137 memset(skb
->cb
, 0, sizeof(skb
->cb
));
1143 read_unlock(&local
->sub_if_lock
);
1147 EXPORT_SYMBOL(ieee80211_tx_status
);
1149 struct ieee80211_hw
*ieee80211_alloc_hw(size_t priv_data_len
,
1150 const struct ieee80211_ops
*ops
)
1152 struct net_device
*mdev
;
1153 struct ieee80211_local
*local
;
1154 struct ieee80211_sub_if_data
*sdata
;
1156 struct wiphy
*wiphy
;
1158 /* Ensure 32-byte alignment of our private data and hw private data.
1159 * We use the wiphy priv data for both our ieee80211_local and for
1160 * the driver's private data
1162 * In memory it'll be like this:
1164 * +-------------------------+
1166 * +-------------------------+
1167 * | struct ieee80211_local |
1168 * +-------------------------+
1169 * | driver's private data |
1170 * +-------------------------+
1173 priv_size
= ((sizeof(struct ieee80211_local
) +
1174 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
) +
1177 wiphy
= wiphy_new(&mac80211_config_ops
, priv_size
);
1182 wiphy
->privid
= mac80211_wiphy_privid
;
1184 local
= wiphy_priv(wiphy
);
1185 local
->hw
.wiphy
= wiphy
;
1187 local
->hw
.priv
= (char *)local
+
1188 ((sizeof(struct ieee80211_local
) +
1189 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
);
1192 BUG_ON(!ops
->config
);
1193 BUG_ON(!ops
->add_interface
);
1196 /* for now, mdev needs sub_if_data :/ */
1197 mdev
= alloc_netdev(sizeof(struct ieee80211_sub_if_data
),
1198 "wmaster%d", ether_setup
);
1204 sdata
= IEEE80211_DEV_TO_SUB_IF(mdev
);
1205 mdev
->ieee80211_ptr
= &sdata
->wdev
;
1206 sdata
->wdev
.wiphy
= wiphy
;
1208 local
->hw
.queues
= 1; /* default */
1211 local
->rx_pre_handlers
= ieee80211_rx_pre_handlers
;
1212 local
->rx_handlers
= ieee80211_rx_handlers
;
1213 local
->tx_handlers
= ieee80211_tx_handlers
;
1215 local
->bridge_packets
= 1;
1217 local
->rts_threshold
= IEEE80211_MAX_RTS_THRESHOLD
;
1218 local
->fragmentation_threshold
= IEEE80211_MAX_FRAG_THRESHOLD
;
1219 local
->short_retry_limit
= 7;
1220 local
->long_retry_limit
= 4;
1221 local
->hw
.conf
.radio_enabled
= 1;
1223 local
->enabled_modes
= (unsigned int) -1;
1225 INIT_LIST_HEAD(&local
->modes_list
);
1227 rwlock_init(&local
->sub_if_lock
);
1228 INIT_LIST_HEAD(&local
->sub_if_list
);
1230 INIT_DELAYED_WORK(&local
->scan_work
, ieee80211_sta_scan_work
);
1231 ieee80211_rx_bss_list_init(mdev
);
1233 sta_info_init(local
);
1235 mdev
->hard_start_xmit
= ieee80211_master_start_xmit
;
1236 mdev
->open
= ieee80211_master_open
;
1237 mdev
->stop
= ieee80211_master_stop
;
1238 mdev
->type
= ARPHRD_IEEE80211
;
1239 mdev
->hard_header_parse
= header_parse_80211
;
1241 sdata
->type
= IEEE80211_IF_TYPE_AP
;
1243 sdata
->local
= local
;
1244 sdata
->u
.ap
.force_unicast_rateidx
= -1;
1245 sdata
->u
.ap
.max_ratectrl_rateidx
= -1;
1246 ieee80211_if_sdata_init(sdata
);
1247 list_add_tail(&sdata
->list
, &local
->sub_if_list
);
1249 tasklet_init(&local
->tx_pending_tasklet
, ieee80211_tx_pending
,
1250 (unsigned long)local
);
1251 tasklet_disable(&local
->tx_pending_tasklet
);
1253 tasklet_init(&local
->tasklet
,
1254 ieee80211_tasklet_handler
,
1255 (unsigned long) local
);
1256 tasklet_disable(&local
->tasklet
);
1258 skb_queue_head_init(&local
->skb_queue
);
1259 skb_queue_head_init(&local
->skb_queue_unreliable
);
1261 return local_to_hw(local
);
1263 EXPORT_SYMBOL(ieee80211_alloc_hw
);
1265 int ieee80211_register_hw(struct ieee80211_hw
*hw
)
1267 struct ieee80211_local
*local
= hw_to_local(hw
);
1271 result
= wiphy_register(local
->hw
.wiphy
);
1275 name
= wiphy_dev(local
->hw
.wiphy
)->driver
->name
;
1276 local
->hw
.workqueue
= create_singlethread_workqueue(name
);
1277 if (!local
->hw
.workqueue
) {
1279 goto fail_workqueue
;
1283 * The hardware needs headroom for sending the frame,
1284 * and we need some headroom for passing the frame to monitor
1285 * interfaces, but never both at the same time.
1287 local
->tx_headroom
= max_t(unsigned int , local
->hw
.extra_tx_headroom
,
1288 sizeof(struct ieee80211_tx_status_rtap_hdr
));
1290 debugfs_hw_add(local
);
1292 local
->hw
.conf
.beacon_int
= 1000;
1294 local
->wstats_flags
|= local
->hw
.max_rssi
?
1295 IW_QUAL_LEVEL_UPDATED
: IW_QUAL_LEVEL_INVALID
;
1296 local
->wstats_flags
|= local
->hw
.max_signal
?
1297 IW_QUAL_QUAL_UPDATED
: IW_QUAL_QUAL_INVALID
;
1298 local
->wstats_flags
|= local
->hw
.max_noise
?
1299 IW_QUAL_NOISE_UPDATED
: IW_QUAL_NOISE_INVALID
;
1300 if (local
->hw
.max_rssi
< 0 || local
->hw
.max_noise
< 0)
1301 local
->wstats_flags
|= IW_QUAL_DBM
;
1303 result
= sta_info_start(local
);
1308 result
= dev_alloc_name(local
->mdev
, local
->mdev
->name
);
1312 memcpy(local
->mdev
->dev_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1313 SET_NETDEV_DEV(local
->mdev
, wiphy_dev(local
->hw
.wiphy
));
1315 result
= register_netdevice(local
->mdev
);
1319 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1321 result
= ieee80211_init_rate_ctrl_alg(local
, NULL
);
1323 printk(KERN_DEBUG
"%s: Failed to initialize rate control "
1324 "algorithm\n", local
->mdev
->name
);
1328 result
= ieee80211_wep_init(local
);
1331 printk(KERN_DEBUG
"%s: Failed to initialize wep\n",
1336 ieee80211_install_qdisc(local
->mdev
);
1338 /* add one default STA interface */
1339 result
= ieee80211_if_add(local
->mdev
, "wlan%d", NULL
,
1340 IEEE80211_IF_TYPE_STA
);
1342 printk(KERN_WARNING
"%s: Failed to add default virtual iface\n",
1345 local
->reg_state
= IEEE80211_DEV_REGISTERED
;
1348 ieee80211_led_init(local
);
1353 rate_control_deinitialize(local
);
1355 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1356 unregister_netdevice(local
->mdev
);
1359 sta_info_stop(local
);
1361 debugfs_hw_del(local
);
1362 destroy_workqueue(local
->hw
.workqueue
);
1364 wiphy_unregister(local
->hw
.wiphy
);
1367 EXPORT_SYMBOL(ieee80211_register_hw
);
1369 int ieee80211_register_hwmode(struct ieee80211_hw
*hw
,
1370 struct ieee80211_hw_mode
*mode
)
1372 struct ieee80211_local
*local
= hw_to_local(hw
);
1373 struct ieee80211_rate
*rate
;
1376 INIT_LIST_HEAD(&mode
->list
);
1377 list_add_tail(&mode
->list
, &local
->modes_list
);
1379 local
->hw_modes
|= (1 << mode
->mode
);
1380 for (i
= 0; i
< mode
->num_rates
; i
++) {
1381 rate
= &(mode
->rates
[i
]);
1382 rate
->rate_inv
= CHAN_UTIL_RATE_LCM
/ rate
->rate
;
1384 ieee80211_prepare_rates(local
, mode
);
1386 if (!local
->oper_hw_mode
) {
1387 /* Default to this mode */
1388 local
->hw
.conf
.phymode
= mode
->mode
;
1389 local
->oper_hw_mode
= local
->scan_hw_mode
= mode
;
1390 local
->oper_channel
= local
->scan_channel
= &mode
->channels
[0];
1391 local
->hw
.conf
.mode
= local
->oper_hw_mode
;
1392 local
->hw
.conf
.chan
= local
->oper_channel
;
1395 if (!(hw
->flags
& IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED
))
1396 ieee80211_set_default_regdomain(mode
);
1400 EXPORT_SYMBOL(ieee80211_register_hwmode
);
1402 void ieee80211_unregister_hw(struct ieee80211_hw
*hw
)
1404 struct ieee80211_local
*local
= hw_to_local(hw
);
1405 struct ieee80211_sub_if_data
*sdata
, *tmp
;
1406 struct list_head tmp_list
;
1409 tasklet_kill(&local
->tx_pending_tasklet
);
1410 tasklet_kill(&local
->tasklet
);
1414 BUG_ON(local
->reg_state
!= IEEE80211_DEV_REGISTERED
);
1416 local
->reg_state
= IEEE80211_DEV_UNREGISTERED
;
1418 ieee80211_if_del_mgmt(local
);
1420 write_lock_bh(&local
->sub_if_lock
);
1421 list_replace_init(&local
->sub_if_list
, &tmp_list
);
1422 write_unlock_bh(&local
->sub_if_lock
);
1424 list_for_each_entry_safe(sdata
, tmp
, &tmp_list
, list
)
1425 __ieee80211_if_del(local
, sdata
);
1429 ieee80211_rx_bss_list_deinit(local
->mdev
);
1430 ieee80211_clear_tx_pending(local
);
1431 sta_info_stop(local
);
1432 rate_control_deinitialize(local
);
1433 debugfs_hw_del(local
);
1435 for (i
= 0; i
< NUM_IEEE80211_MODES
; i
++) {
1436 kfree(local
->supp_rates
[i
]);
1437 kfree(local
->basic_rates
[i
]);
1440 if (skb_queue_len(&local
->skb_queue
)
1441 || skb_queue_len(&local
->skb_queue_unreliable
))
1442 printk(KERN_WARNING
"%s: skb_queue not empty\n",
1444 skb_queue_purge(&local
->skb_queue
);
1445 skb_queue_purge(&local
->skb_queue_unreliable
);
1447 destroy_workqueue(local
->hw
.workqueue
);
1448 wiphy_unregister(local
->hw
.wiphy
);
1449 ieee80211_wep_free(local
);
1450 ieee80211_led_exit(local
);
1452 EXPORT_SYMBOL(ieee80211_unregister_hw
);
1454 void ieee80211_free_hw(struct ieee80211_hw
*hw
)
1456 struct ieee80211_local
*local
= hw_to_local(hw
);
1458 ieee80211_if_free(local
->mdev
);
1459 wiphy_free(local
->hw
.wiphy
);
1461 EXPORT_SYMBOL(ieee80211_free_hw
);
1463 struct net_device_stats
*ieee80211_dev_stats(struct net_device
*dev
)
1465 struct ieee80211_sub_if_data
*sdata
;
1466 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1467 return &sdata
->stats
;
1470 static int __init
ieee80211_init(void)
1472 struct sk_buff
*skb
;
1475 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data
) > sizeof(skb
->cb
));
1477 ret
= ieee80211_wme_register();
1479 printk(KERN_DEBUG
"ieee80211_init: failed to "
1480 "initialize WME (err=%d)\n", ret
);
1484 ieee80211_debugfs_netdev_init();
1485 ieee80211_regdomain_init();
1490 static void __exit
ieee80211_exit(void)
1492 ieee80211_wme_unregister();
1493 ieee80211_debugfs_netdev_exit();
1497 subsys_initcall(ieee80211_init
);
1498 module_exit(ieee80211_exit
);
1500 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1501 MODULE_LICENSE("GPL");