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_common.h"
28 #include "ieee80211_i.h"
29 #include "ieee80211_rate.h"
33 #include "ieee80211_led.h"
34 #include "ieee80211_cfg.h"
36 #include "debugfs_netdev.h"
39 * For seeing transmitted packets on monitor interfaces
40 * we have a radiotap header too.
42 struct ieee80211_tx_status_rtap_hdr
{
43 struct ieee80211_radiotap_header hdr
;
46 } __attribute__ ((packed
));
48 /* common interface routines */
50 static struct net_device_stats
*ieee80211_get_stats(struct net_device
*dev
)
52 struct ieee80211_sub_if_data
*sdata
;
53 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
54 return &(sdata
->stats
);
57 static int header_parse_80211(struct sk_buff
*skb
, unsigned char *haddr
)
59 memcpy(haddr
, skb_mac_header(skb
) + 10, ETH_ALEN
); /* addr2 */
63 /* master interface */
65 static int ieee80211_master_open(struct net_device
*dev
)
67 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
68 struct ieee80211_sub_if_data
*sdata
;
69 int res
= -EOPNOTSUPP
;
71 read_lock(&local
->sub_if_lock
);
72 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
73 if (sdata
->dev
!= dev
&& netif_running(sdata
->dev
)) {
78 read_unlock(&local
->sub_if_lock
);
82 static int ieee80211_master_stop(struct net_device
*dev
)
84 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
85 struct ieee80211_sub_if_data
*sdata
;
87 read_lock(&local
->sub_if_lock
);
88 list_for_each_entry(sdata
, &local
->sub_if_list
, list
)
89 if (sdata
->dev
!= dev
&& netif_running(sdata
->dev
))
90 dev_close(sdata
->dev
);
91 read_unlock(&local
->sub_if_lock
);
96 /* management interface */
99 ieee80211_fill_frame_info(struct ieee80211_local
*local
,
100 struct ieee80211_frame_info
*fi
,
101 struct ieee80211_rx_status
*status
)
105 struct ieee80211_rate
*rate
;
107 jiffies_to_timespec(jiffies
, &ts
);
108 fi
->hosttime
= cpu_to_be64((u64
) ts
.tv_sec
* 1000000 +
110 fi
->mactime
= cpu_to_be64(status
->mactime
);
111 switch (status
->phymode
) {
112 case MODE_IEEE80211A
:
113 fi
->phytype
= htonl(ieee80211_phytype_ofdm_dot11_a
);
115 case MODE_IEEE80211B
:
116 fi
->phytype
= htonl(ieee80211_phytype_dsss_dot11_b
);
118 case MODE_IEEE80211G
:
119 fi
->phytype
= htonl(ieee80211_phytype_pbcc_dot11_g
);
121 case MODE_ATHEROS_TURBO
:
123 htonl(ieee80211_phytype_dsss_dot11_turbo
);
126 fi
->phytype
= htonl(0xAAAAAAAA);
129 fi
->channel
= htonl(status
->channel
);
130 rate
= ieee80211_get_rate(local
, status
->phymode
,
133 fi
->datarate
= htonl(rate
->rate
);
134 if (rate
->flags
& IEEE80211_RATE_PREAMBLE2
) {
135 if (status
->rate
== rate
->val
)
136 fi
->preamble
= htonl(2); /* long */
137 else if (status
->rate
== rate
->val2
)
138 fi
->preamble
= htonl(1); /* short */
140 fi
->preamble
= htonl(0);
142 fi
->datarate
= htonl(0);
143 fi
->preamble
= htonl(0);
146 fi
->antenna
= htonl(status
->antenna
);
147 fi
->priority
= htonl(0xffffffff); /* no clue */
148 fi
->ssi_type
= htonl(ieee80211_ssi_raw
);
149 fi
->ssi_signal
= htonl(status
->ssi
);
150 fi
->ssi_noise
= 0x00000000;
153 /* clear everything because we really don't know.
154 * the msg_type field isn't present on monitor frames
155 * so we don't know whether it will be present or not,
156 * but it's ok to not clear it since it'll be assigned
158 memset(fi
, 0, sizeof(*fi
) - sizeof(fi
->msg_type
));
160 fi
->ssi_type
= htonl(ieee80211_ssi_none
);
162 fi
->version
= htonl(IEEE80211_FI_VERSION
);
163 fi
->length
= cpu_to_be32(sizeof(*fi
) - sizeof(fi
->msg_type
));
166 /* this routine is actually not just for this, but also
167 * for pushing fake 'management' frames into userspace.
168 * it shall be replaced by a netlink-based system. */
170 ieee80211_rx_mgmt(struct ieee80211_local
*local
, struct sk_buff
*skb
,
171 struct ieee80211_rx_status
*status
, u32 msg_type
)
173 struct ieee80211_frame_info
*fi
;
174 const size_t hlen
= sizeof(struct ieee80211_frame_info
);
175 struct ieee80211_sub_if_data
*sdata
;
177 skb
->dev
= local
->apdev
;
179 sdata
= IEEE80211_DEV_TO_SUB_IF(local
->apdev
);
181 if (skb_headroom(skb
) < hlen
) {
182 I802_DEBUG_INC(local
->rx_expand_skb_head
);
183 if (pskb_expand_head(skb
, hlen
, 0, GFP_ATOMIC
)) {
189 fi
= (struct ieee80211_frame_info
*) skb_push(skb
, hlen
);
191 ieee80211_fill_frame_info(local
, fi
, status
);
192 fi
->msg_type
= htonl(msg_type
);
194 sdata
->stats
.rx_packets
++;
195 sdata
->stats
.rx_bytes
+= skb
->len
;
197 skb_set_mac_header(skb
, 0);
198 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
199 skb
->pkt_type
= PACKET_OTHERHOST
;
200 skb
->protocol
= htons(ETH_P_802_2
);
201 memset(skb
->cb
, 0, sizeof(skb
->cb
));
205 void ieee80211_key_threshold_notify(struct net_device
*dev
,
206 struct ieee80211_key
*key
,
207 struct sta_info
*sta
)
209 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
211 struct ieee80211_msg_key_notification
*msg
;
213 /* if no one will get it anyway, don't even allocate it.
214 * unlikely because this is only relevant for APs
215 * where the device must be open... */
216 if (unlikely(!local
->apdev
))
219 skb
= dev_alloc_skb(sizeof(struct ieee80211_frame_info
) +
220 sizeof(struct ieee80211_msg_key_notification
));
224 skb_reserve(skb
, sizeof(struct ieee80211_frame_info
));
225 msg
= (struct ieee80211_msg_key_notification
*)
226 skb_put(skb
, sizeof(struct ieee80211_msg_key_notification
));
227 msg
->tx_rx_count
= key
->tx_rx_count
;
228 memcpy(msg
->ifname
, dev
->name
, IFNAMSIZ
);
230 memcpy(msg
->addr
, sta
->addr
, ETH_ALEN
);
232 memset(msg
->addr
, 0xff, ETH_ALEN
);
234 key
->tx_rx_count
= 0;
236 ieee80211_rx_mgmt(local
, skb
, NULL
,
237 ieee80211_msg_key_threshold_notification
);
240 static int ieee80211_mgmt_open(struct net_device
*dev
)
242 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
244 if (!netif_running(local
->mdev
))
249 static int ieee80211_mgmt_stop(struct net_device
*dev
)
254 static int ieee80211_change_mtu_apdev(struct net_device
*dev
, int new_mtu
)
256 /* FIX: what would be proper limits for MTU?
257 * This interface uses 802.11 frames. */
258 if (new_mtu
< 256 || new_mtu
> IEEE80211_MAX_DATA_LEN
) {
259 printk(KERN_WARNING
"%s: invalid MTU %d\n",
264 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
265 printk(KERN_DEBUG
"%s: setting MTU %d\n", dev
->name
, new_mtu
);
266 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
271 void ieee80211_if_mgmt_setup(struct net_device
*dev
)
274 dev
->hard_start_xmit
= ieee80211_mgmt_start_xmit
;
275 dev
->change_mtu
= ieee80211_change_mtu_apdev
;
276 dev
->get_stats
= ieee80211_get_stats
;
277 dev
->open
= ieee80211_mgmt_open
;
278 dev
->stop
= ieee80211_mgmt_stop
;
279 dev
->type
= ARPHRD_IEEE80211_PRISM
;
280 dev
->hard_header_parse
= header_parse_80211
;
281 dev
->uninit
= ieee80211_if_reinit
;
282 dev
->destructor
= ieee80211_if_free
;
285 /* regular interfaces */
287 static int ieee80211_change_mtu(struct net_device
*dev
, int new_mtu
)
289 /* FIX: what would be proper limits for MTU?
290 * This interface uses 802.3 frames. */
291 if (new_mtu
< 256 || new_mtu
> IEEE80211_MAX_DATA_LEN
- 24 - 6) {
292 printk(KERN_WARNING
"%s: invalid MTU %d\n",
297 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
298 printk(KERN_DEBUG
"%s: setting MTU %d\n", dev
->name
, new_mtu
);
299 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
304 static inline int identical_mac_addr_allowed(int type1
, int type2
)
306 return (type1
== IEEE80211_IF_TYPE_MNTR
||
307 type2
== IEEE80211_IF_TYPE_MNTR
||
308 (type1
== IEEE80211_IF_TYPE_AP
&&
309 type2
== IEEE80211_IF_TYPE_WDS
) ||
310 (type1
== IEEE80211_IF_TYPE_WDS
&&
311 (type2
== IEEE80211_IF_TYPE_WDS
||
312 type2
== IEEE80211_IF_TYPE_AP
)) ||
313 (type1
== IEEE80211_IF_TYPE_AP
&&
314 type2
== IEEE80211_IF_TYPE_VLAN
) ||
315 (type1
== IEEE80211_IF_TYPE_VLAN
&&
316 (type2
== IEEE80211_IF_TYPE_AP
||
317 type2
== IEEE80211_IF_TYPE_VLAN
)));
320 /* Check if running monitor interfaces should go to a "soft monitor" mode
321 * and switch them if necessary. */
322 static inline void ieee80211_start_soft_monitor(struct ieee80211_local
*local
)
324 struct ieee80211_if_init_conf conf
;
326 if (local
->open_count
&& local
->open_count
== local
->monitors
&&
327 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
) &&
328 local
->ops
->remove_interface
) {
330 conf
.type
= IEEE80211_IF_TYPE_MNTR
;
331 conf
.mac_addr
= NULL
;
332 local
->ops
->remove_interface(local_to_hw(local
), &conf
);
336 /* Check if running monitor interfaces should go to a "hard monitor" mode
337 * and switch them if necessary. */
338 static void ieee80211_start_hard_monitor(struct ieee80211_local
*local
)
340 struct ieee80211_if_init_conf conf
;
342 if (local
->open_count
&& local
->open_count
== local
->monitors
&&
343 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
)) {
345 conf
.type
= IEEE80211_IF_TYPE_MNTR
;
346 conf
.mac_addr
= NULL
;
347 local
->ops
->add_interface(local_to_hw(local
), &conf
);
351 static void ieee80211_if_open(struct net_device
*dev
)
353 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
355 switch (sdata
->type
) {
356 case IEEE80211_IF_TYPE_STA
:
357 case IEEE80211_IF_TYPE_IBSS
:
358 sdata
->u
.sta
.flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
363 static int ieee80211_open(struct net_device
*dev
)
365 struct ieee80211_sub_if_data
*sdata
, *nsdata
;
366 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
367 struct ieee80211_if_init_conf conf
;
370 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
371 read_lock(&local
->sub_if_lock
);
372 list_for_each_entry(nsdata
, &local
->sub_if_list
, list
) {
373 struct net_device
*ndev
= nsdata
->dev
;
375 if (ndev
!= dev
&& ndev
!= local
->mdev
&& netif_running(ndev
) &&
376 compare_ether_addr(dev
->dev_addr
, ndev
->dev_addr
) == 0 &&
377 !identical_mac_addr_allowed(sdata
->type
, nsdata
->type
)) {
378 read_unlock(&local
->sub_if_lock
);
382 read_unlock(&local
->sub_if_lock
);
384 if (sdata
->type
== IEEE80211_IF_TYPE_WDS
&&
385 is_zero_ether_addr(sdata
->u
.wds
.remote_addr
))
388 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
&& local
->open_count
&&
389 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
)) {
390 /* run the interface in a "soft monitor" mode */
393 local
->hw
.conf
.flags
|= IEEE80211_CONF_RADIOTAP
;
396 ieee80211_if_open(dev
);
397 ieee80211_start_soft_monitor(local
);
399 conf
.if_id
= dev
->ifindex
;
400 conf
.type
= sdata
->type
;
401 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
)
402 conf
.mac_addr
= NULL
;
404 conf
.mac_addr
= dev
->dev_addr
;
405 res
= local
->ops
->add_interface(local_to_hw(local
), &conf
);
407 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
)
408 ieee80211_start_hard_monitor(local
);
412 if (local
->open_count
== 0) {
414 tasklet_enable(&local
->tx_pending_tasklet
);
415 tasklet_enable(&local
->tasklet
);
416 if (local
->ops
->open
)
417 res
= local
->ops
->open(local_to_hw(local
));
419 res
= dev_open(local
->mdev
);
421 if (local
->ops
->stop
)
422 local
->ops
->stop(local_to_hw(local
));
424 res
= ieee80211_hw_config(local
);
425 if (res
&& local
->ops
->stop
)
426 local
->ops
->stop(local_to_hw(local
));
427 else if (!res
&& local
->apdev
)
428 dev_open(local
->apdev
);
432 if (local
->ops
->remove_interface
)
433 local
->ops
->remove_interface(local_to_hw(local
),
440 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
442 local
->hw
.conf
.flags
|= IEEE80211_CONF_RADIOTAP
;
444 ieee80211_if_config(dev
);
445 ieee80211_reset_erp_info(dev
);
446 ieee80211_enable_keys(sdata
);
449 if (sdata
->type
== IEEE80211_IF_TYPE_STA
&&
450 !local
->user_space_mlme
)
451 netif_carrier_off(dev
);
453 netif_carrier_on(dev
);
455 netif_start_queue(dev
);
459 static void ieee80211_if_shutdown(struct net_device
*dev
)
461 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
462 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
465 switch (sdata
->type
) {
466 case IEEE80211_IF_TYPE_STA
:
467 case IEEE80211_IF_TYPE_IBSS
:
468 sdata
->u
.sta
.state
= IEEE80211_DISABLED
;
469 del_timer_sync(&sdata
->u
.sta
.timer
);
471 * Holding the sub_if_lock for writing here blocks
472 * out the receive path and makes sure it's not
473 * currently processing a packet that may get
474 * added to the queue.
476 write_lock_bh(&local
->sub_if_lock
);
477 skb_queue_purge(&sdata
->u
.sta
.skb_queue
);
478 write_unlock_bh(&local
->sub_if_lock
);
480 if (!local
->ops
->hw_scan
&&
481 local
->scan_dev
== sdata
->dev
) {
482 local
->sta_scanning
= 0;
483 cancel_delayed_work(&local
->scan_work
);
485 flush_workqueue(local
->hw
.workqueue
);
490 static int ieee80211_stop(struct net_device
*dev
)
492 struct ieee80211_sub_if_data
*sdata
;
493 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
495 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
497 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
&&
498 local
->open_count
> 1 &&
499 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
)) {
500 /* remove "soft monitor" interface */
503 if (!local
->monitors
)
504 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_RADIOTAP
;
508 netif_stop_queue(dev
);
509 ieee80211_if_shutdown(dev
);
511 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
513 if (!local
->monitors
)
514 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_RADIOTAP
;
516 /* disable all keys for as long as this netdev is down */
517 ieee80211_disable_keys(sdata
);
521 if (local
->open_count
== 0) {
522 if (netif_running(local
->mdev
))
523 dev_close(local
->mdev
);
525 dev_close(local
->apdev
);
526 if (local
->ops
->stop
)
527 local
->ops
->stop(local_to_hw(local
));
528 tasklet_disable(&local
->tx_pending_tasklet
);
529 tasklet_disable(&local
->tasklet
);
531 if (local
->ops
->remove_interface
) {
532 struct ieee80211_if_init_conf conf
;
534 conf
.if_id
= dev
->ifindex
;
535 conf
.type
= sdata
->type
;
536 conf
.mac_addr
= dev
->dev_addr
;
537 local
->ops
->remove_interface(local_to_hw(local
), &conf
);
540 ieee80211_start_hard_monitor(local
);
545 enum netif_tx_lock_class
{
550 static inline void netif_tx_lock_nested(struct net_device
*dev
, int subclass
)
552 spin_lock_nested(&dev
->_xmit_lock
, subclass
);
553 dev
->xmit_lock_owner
= smp_processor_id();
556 static void ieee80211_set_multicast_list(struct net_device
*dev
)
558 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
559 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
560 unsigned short flags
;
562 netif_tx_lock_nested(local
->mdev
, TX_LOCK_MASTER
);
563 if (((dev
->flags
& IFF_ALLMULTI
) != 0) ^
564 ((sdata
->flags
& IEEE80211_SDATA_ALLMULTI
) != 0)) {
565 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
566 local
->iff_allmultis
--;
568 local
->iff_allmultis
++;
569 sdata
->flags
^= IEEE80211_SDATA_ALLMULTI
;
571 if (((dev
->flags
& IFF_PROMISC
) != 0) ^
572 ((sdata
->flags
& IEEE80211_SDATA_PROMISC
) != 0)) {
573 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
574 local
->iff_promiscs
--;
576 local
->iff_promiscs
++;
577 sdata
->flags
^= IEEE80211_SDATA_PROMISC
;
579 if (dev
->mc_count
!= sdata
->mc_count
) {
580 local
->mc_count
= local
->mc_count
- sdata
->mc_count
+
582 sdata
->mc_count
= dev
->mc_count
;
584 if (local
->ops
->set_multicast_list
) {
585 flags
= local
->mdev
->flags
;
586 if (local
->iff_allmultis
)
587 flags
|= IFF_ALLMULTI
;
588 if (local
->iff_promiscs
)
589 flags
|= IFF_PROMISC
;
590 read_lock(&local
->sub_if_lock
);
591 local
->ops
->set_multicast_list(local_to_hw(local
), flags
,
593 read_unlock(&local
->sub_if_lock
);
595 netif_tx_unlock(local
->mdev
);
598 /* Must not be called for mdev and apdev */
599 void ieee80211_if_setup(struct net_device
*dev
)
602 dev
->hard_start_xmit
= ieee80211_subif_start_xmit
;
603 dev
->wireless_handlers
= &ieee80211_iw_handler_def
;
604 dev
->set_multicast_list
= ieee80211_set_multicast_list
;
605 dev
->change_mtu
= ieee80211_change_mtu
;
606 dev
->get_stats
= ieee80211_get_stats
;
607 dev
->open
= ieee80211_open
;
608 dev
->stop
= ieee80211_stop
;
609 dev
->uninit
= ieee80211_if_reinit
;
610 dev
->destructor
= ieee80211_if_free
;
613 /* WDS specialties */
615 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
)
617 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
618 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
619 struct sta_info
*sta
;
621 if (compare_ether_addr(remote_addr
, sdata
->u
.wds
.remote_addr
) == 0)
624 /* Create STA entry for the new peer */
625 sta
= sta_info_add(local
, dev
, remote_addr
, GFP_KERNEL
);
630 /* Remove STA entry for the old peer */
631 sta
= sta_info_get(local
, sdata
->u
.wds
.remote_addr
);
636 printk(KERN_DEBUG
"%s: could not find STA entry for WDS link "
637 "peer " MAC_FMT
"\n",
638 dev
->name
, MAC_ARG(sdata
->u
.wds
.remote_addr
));
641 /* Update WDS link data */
642 memcpy(&sdata
->u
.wds
.remote_addr
, remote_addr
, ETH_ALEN
);
647 /* everything else */
649 static int __ieee80211_if_config(struct net_device
*dev
,
650 struct sk_buff
*beacon
,
651 struct ieee80211_tx_control
*control
)
653 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
654 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
655 struct ieee80211_if_conf conf
;
656 static u8 scan_bssid
[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
658 if (!local
->ops
->config_interface
|| !netif_running(dev
))
661 memset(&conf
, 0, sizeof(conf
));
662 conf
.type
= sdata
->type
;
663 if (sdata
->type
== IEEE80211_IF_TYPE_STA
||
664 sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
665 if (local
->sta_scanning
&&
666 local
->scan_dev
== dev
)
667 conf
.bssid
= scan_bssid
;
669 conf
.bssid
= sdata
->u
.sta
.bssid
;
670 conf
.ssid
= sdata
->u
.sta
.ssid
;
671 conf
.ssid_len
= sdata
->u
.sta
.ssid_len
;
672 conf
.generic_elem
= sdata
->u
.sta
.extra_ie
;
673 conf
.generic_elem_len
= sdata
->u
.sta
.extra_ie_len
;
674 } else if (sdata
->type
== IEEE80211_IF_TYPE_AP
) {
675 conf
.ssid
= sdata
->u
.ap
.ssid
;
676 conf
.ssid_len
= sdata
->u
.ap
.ssid_len
;
677 conf
.generic_elem
= sdata
->u
.ap
.generic_elem
;
678 conf
.generic_elem_len
= sdata
->u
.ap
.generic_elem_len
;
679 conf
.beacon
= beacon
;
680 conf
.beacon_control
= control
;
682 return local
->ops
->config_interface(local_to_hw(local
),
683 dev
->ifindex
, &conf
);
686 int ieee80211_if_config(struct net_device
*dev
)
688 return __ieee80211_if_config(dev
, NULL
, NULL
);
691 int ieee80211_if_config_beacon(struct net_device
*dev
)
693 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
694 struct ieee80211_tx_control control
;
697 if (!(local
->hw
.flags
& IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
))
699 skb
= ieee80211_beacon_get(local_to_hw(local
), dev
->ifindex
, &control
);
702 return __ieee80211_if_config(dev
, skb
, &control
);
705 int ieee80211_hw_config(struct ieee80211_local
*local
)
707 struct ieee80211_hw_mode
*mode
;
708 struct ieee80211_channel
*chan
;
711 if (local
->sta_scanning
) {
712 chan
= local
->scan_channel
;
713 mode
= local
->scan_hw_mode
;
715 chan
= local
->oper_channel
;
716 mode
= local
->oper_hw_mode
;
719 local
->hw
.conf
.channel
= chan
->chan
;
720 local
->hw
.conf
.channel_val
= chan
->val
;
721 local
->hw
.conf
.power_level
= chan
->power_level
;
722 local
->hw
.conf
.freq
= chan
->freq
;
723 local
->hw
.conf
.phymode
= mode
->mode
;
724 local
->hw
.conf
.antenna_max
= chan
->antenna_max
;
725 local
->hw
.conf
.chan
= chan
;
726 local
->hw
.conf
.mode
= mode
;
728 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
729 printk(KERN_DEBUG
"HW CONFIG: channel=%d freq=%d "
730 "phymode=%d\n", local
->hw
.conf
.channel
, local
->hw
.conf
.freq
,
731 local
->hw
.conf
.phymode
);
732 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
734 if (local
->ops
->config
)
735 ret
= local
->ops
->config(local_to_hw(local
), &local
->hw
.conf
);
740 void ieee80211_erp_info_change_notify(struct net_device
*dev
, u8 changes
)
742 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
743 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
744 if (local
->ops
->erp_ie_changed
)
745 local
->ops
->erp_ie_changed(local_to_hw(local
), changes
,
746 !!(sdata
->flags
& IEEE80211_SDATA_USE_PROTECTION
),
747 !(sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
));
750 void ieee80211_reset_erp_info(struct net_device
*dev
)
752 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
754 sdata
->flags
&= ~(IEEE80211_SDATA_USE_PROTECTION
|
755 IEEE80211_SDATA_SHORT_PREAMBLE
);
756 ieee80211_erp_info_change_notify(dev
,
757 IEEE80211_ERP_CHANGE_PROTECTION
|
758 IEEE80211_ERP_CHANGE_PREAMBLE
);
761 struct dev_mc_list
*ieee80211_get_mc_list_item(struct ieee80211_hw
*hw
,
762 struct dev_mc_list
*prev
,
765 struct ieee80211_local
*local
= hw_to_local(hw
);
766 struct ieee80211_sub_if_data
*sdata
= *ptr
;
767 struct dev_mc_list
*mc
;
773 if (!prev
|| !prev
->next
) {
775 sdata
= list_entry(sdata
->list
.next
,
776 struct ieee80211_sub_if_data
, list
);
778 sdata
= list_entry(local
->sub_if_list
.next
,
779 struct ieee80211_sub_if_data
, list
);
780 if (&sdata
->list
!= &local
->sub_if_list
)
781 mc
= sdata
->dev
->mc_list
;
790 EXPORT_SYMBOL(ieee80211_get_mc_list_item
);
792 void ieee80211_tx_status_irqsafe(struct ieee80211_hw
*hw
,
794 struct ieee80211_tx_status
*status
)
796 struct ieee80211_local
*local
= hw_to_local(hw
);
797 struct ieee80211_tx_status
*saved
;
800 skb
->dev
= local
->mdev
;
801 saved
= kmalloc(sizeof(struct ieee80211_tx_status
), GFP_ATOMIC
);
802 if (unlikely(!saved
)) {
804 printk(KERN_WARNING
"%s: Not enough memory, "
805 "dropping tx status", skb
->dev
->name
);
806 /* should be dev_kfree_skb_irq, but due to this function being
807 * named _irqsafe instead of just _irq we can't be sure that
808 * people won't call it from non-irq contexts */
809 dev_kfree_skb_any(skb
);
812 memcpy(saved
, status
, sizeof(struct ieee80211_tx_status
));
813 /* copy pointer to saved status into skb->cb for use by tasklet */
814 memcpy(skb
->cb
, &saved
, sizeof(saved
));
816 skb
->pkt_type
= IEEE80211_TX_STATUS_MSG
;
817 skb_queue_tail(status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
?
818 &local
->skb_queue
: &local
->skb_queue_unreliable
, skb
);
819 tmp
= skb_queue_len(&local
->skb_queue
) +
820 skb_queue_len(&local
->skb_queue_unreliable
);
821 while (tmp
> IEEE80211_IRQSAFE_QUEUE_LIMIT
&&
822 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
823 memcpy(&saved
, skb
->cb
, sizeof(saved
));
825 dev_kfree_skb_irq(skb
);
827 I802_DEBUG_INC(local
->tx_status_drop
);
829 tasklet_schedule(&local
->tasklet
);
831 EXPORT_SYMBOL(ieee80211_tx_status_irqsafe
);
833 static void ieee80211_tasklet_handler(unsigned long data
)
835 struct ieee80211_local
*local
= (struct ieee80211_local
*) data
;
837 struct ieee80211_rx_status rx_status
;
838 struct ieee80211_tx_status
*tx_status
;
840 while ((skb
= skb_dequeue(&local
->skb_queue
)) ||
841 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
842 switch (skb
->pkt_type
) {
843 case IEEE80211_RX_MSG
:
844 /* status is in skb->cb */
845 memcpy(&rx_status
, skb
->cb
, sizeof(rx_status
));
846 /* Clear skb->type in order to not confuse kernel
849 __ieee80211_rx(local_to_hw(local
), skb
, &rx_status
);
851 case IEEE80211_TX_STATUS_MSG
:
852 /* get pointer to saved status out of skb->cb */
853 memcpy(&tx_status
, skb
->cb
, sizeof(tx_status
));
855 ieee80211_tx_status(local_to_hw(local
),
859 default: /* should never get here! */
860 printk(KERN_ERR
"%s: Unknown message type (%d)\n",
861 local
->mdev
->name
, skb
->pkt_type
);
868 /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
869 * make a prepared TX frame (one that has been given to hw) to look like brand
870 * new IEEE 802.11 frame that is ready to go through TX processing again.
871 * Also, tx_packet_data in cb is restored from tx_control. */
872 static void ieee80211_remove_tx_extra(struct ieee80211_local
*local
,
873 struct ieee80211_key
*key
,
875 struct ieee80211_tx_control
*control
)
877 int hdrlen
, iv_len
, mic_len
;
878 struct ieee80211_tx_packet_data
*pkt_data
;
880 pkt_data
= (struct ieee80211_tx_packet_data
*)skb
->cb
;
881 pkt_data
->ifindex
= control
->ifindex
;
883 if (control
->flags
& IEEE80211_TXCTL_REQ_TX_STATUS
)
884 pkt_data
->flags
|= IEEE80211_TXPD_REQ_TX_STATUS
;
885 if (control
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
)
886 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
887 if (control
->flags
& IEEE80211_TXCTL_REQUEUE
)
888 pkt_data
->flags
|= IEEE80211_TXPD_REQUEUE
;
889 if (control
->type
== IEEE80211_IF_TYPE_MGMT
)
890 pkt_data
->flags
|= IEEE80211_TXPD_MGMT_IFACE
;
891 pkt_data
->queue
= control
->queue
;
893 hdrlen
= ieee80211_get_hdrlen_from_skb(skb
);
898 switch (key
->conf
.alg
) {
901 mic_len
= WEP_ICV_LEN
;
904 iv_len
= TKIP_IV_LEN
;
905 mic_len
= TKIP_ICV_LEN
;
908 iv_len
= CCMP_HDR_LEN
;
909 mic_len
= CCMP_MIC_LEN
;
915 if (skb
->len
>= mic_len
&&
916 !(key
->flags
& KEY_FLAG_UPLOADED_TO_HARDWARE
))
917 skb_trim(skb
, skb
->len
- mic_len
);
918 if (skb
->len
>= iv_len
&& skb
->len
> hdrlen
) {
919 memmove(skb
->data
+ iv_len
, skb
->data
, hdrlen
);
920 skb_pull(skb
, iv_len
);
925 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
926 u16 fc
= le16_to_cpu(hdr
->frame_control
);
927 if ((fc
& 0x8C) == 0x88) /* QoS Control Field */ {
928 fc
&= ~IEEE80211_STYPE_QOS_DATA
;
929 hdr
->frame_control
= cpu_to_le16(fc
);
930 memmove(skb
->data
+ 2, skb
->data
, hdrlen
- 2);
936 void ieee80211_tx_status(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
937 struct ieee80211_tx_status
*status
)
939 struct sk_buff
*skb2
;
940 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
941 struct ieee80211_local
*local
= hw_to_local(hw
);
944 struct ieee80211_tx_status_rtap_hdr
*rthdr
;
945 struct ieee80211_sub_if_data
*sdata
;
950 "%s: ieee80211_tx_status called with NULL status\n",
956 if (status
->excessive_retries
) {
957 struct sta_info
*sta
;
958 sta
= sta_info_get(local
, hdr
->addr1
);
960 if (sta
->flags
& WLAN_STA_PS
) {
961 /* The STA is in power save mode, so assume
962 * that this TX packet failed because of that.
964 status
->excessive_retries
= 0;
965 status
->flags
|= IEEE80211_TX_STATUS_TX_FILTERED
;
971 if (status
->flags
& IEEE80211_TX_STATUS_TX_FILTERED
) {
972 struct sta_info
*sta
;
973 sta
= sta_info_get(local
, hdr
->addr1
);
975 sta
->tx_filtered_count
++;
977 /* Clear the TX filter mask for this STA when sending
978 * the next packet. If the STA went to power save mode,
979 * this will happen when it is waking up for the next
981 sta
->clear_dst_mask
= 1;
983 /* TODO: Is the WLAN_STA_PS flag always set here or is
984 * the race between RX and TX status causing some
985 * packets to be filtered out before 80211.o gets an
986 * update for PS status? This seems to be the case, so
987 * no changes are likely to be needed. */
988 if (sta
->flags
& WLAN_STA_PS
&&
989 skb_queue_len(&sta
->tx_filtered
) <
991 ieee80211_remove_tx_extra(local
, sta
->key
,
994 skb_queue_tail(&sta
->tx_filtered
, skb
);
995 } else if (!(sta
->flags
& WLAN_STA_PS
) &&
996 !(status
->control
.flags
& IEEE80211_TXCTL_REQUEUE
)) {
997 /* Software retry the packet once */
998 status
->control
.flags
|= IEEE80211_TXCTL_REQUEUE
;
999 ieee80211_remove_tx_extra(local
, sta
->key
,
1002 dev_queue_xmit(skb
);
1004 if (net_ratelimit()) {
1005 printk(KERN_DEBUG
"%s: dropped TX "
1006 "filtered frame queue_len=%d "
1011 !!(sta
->flags
& WLAN_STA_PS
),
1020 /* FIXME: STUPID to call this with both local and local->mdev */
1021 rate_control_tx_status(local
, local
->mdev
, skb
, status
);
1024 ieee80211_led_tx(local
, 0);
1027 * Fragments are passed to low-level drivers as separate skbs, so these
1028 * are actually fragments, not frames. Update frame counters only for
1029 * the first fragment of the frame. */
1031 frag
= le16_to_cpu(hdr
->seq_ctrl
) & IEEE80211_SCTL_FRAG
;
1032 type
= le16_to_cpu(hdr
->frame_control
) & IEEE80211_FCTL_FTYPE
;
1034 if (status
->flags
& IEEE80211_TX_STATUS_ACK
) {
1036 local
->dot11TransmittedFrameCount
++;
1037 if (is_multicast_ether_addr(hdr
->addr1
))
1038 local
->dot11MulticastTransmittedFrameCount
++;
1039 if (status
->retry_count
> 0)
1040 local
->dot11RetryCount
++;
1041 if (status
->retry_count
> 1)
1042 local
->dot11MultipleRetryCount
++;
1045 /* This counter shall be incremented for an acknowledged MPDU
1046 * with an individual address in the address 1 field or an MPDU
1047 * with a multicast address in the address 1 field of type Data
1049 if (!is_multicast_ether_addr(hdr
->addr1
) ||
1050 type
== IEEE80211_FTYPE_DATA
||
1051 type
== IEEE80211_FTYPE_MGMT
)
1052 local
->dot11TransmittedFragmentCount
++;
1055 local
->dot11FailedCount
++;
1058 msg_type
= (status
->flags
& IEEE80211_TX_STATUS_ACK
) ?
1059 ieee80211_msg_tx_callback_ack
: ieee80211_msg_tx_callback_fail
;
1061 /* this was a transmitted frame, but now we want to reuse it */
1064 if ((status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
) &&
1066 if (local
->monitors
) {
1067 skb2
= skb_clone(skb
, GFP_ATOMIC
);
1074 /* Send frame to hostapd */
1075 ieee80211_rx_mgmt(local
, skb2
, NULL
, msg_type
);
1081 if (!local
->monitors
) {
1086 /* send frame to monitor interfaces now */
1088 if (skb_headroom(skb
) < sizeof(*rthdr
)) {
1089 printk(KERN_ERR
"ieee80211_tx_status: headroom too small\n");
1094 rthdr
= (struct ieee80211_tx_status_rtap_hdr
*)
1095 skb_push(skb
, sizeof(*rthdr
));
1097 memset(rthdr
, 0, sizeof(*rthdr
));
1098 rthdr
->hdr
.it_len
= cpu_to_le16(sizeof(*rthdr
));
1099 rthdr
->hdr
.it_present
=
1100 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS
) |
1101 (1 << IEEE80211_RADIOTAP_DATA_RETRIES
));
1103 if (!(status
->flags
& IEEE80211_TX_STATUS_ACK
) &&
1104 !is_multicast_ether_addr(hdr
->addr1
))
1105 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL
);
1107 if ((status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
) &&
1108 (status
->control
.flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
))
1109 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS
);
1110 else if (status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
)
1111 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS
);
1113 rthdr
->data_retries
= status
->retry_count
;
1115 read_lock(&local
->sub_if_lock
);
1116 monitors
= local
->monitors
;
1117 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
1119 * Using the monitors counter is possibly racy, but
1120 * if the value is wrong we simply either clone the skb
1121 * once too much or forget sending it to one monitor iface
1122 * The latter case isn't nice but fixing the race is much
1125 if (!monitors
|| !skb
)
1128 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
1129 if (!netif_running(sdata
->dev
))
1133 skb2
= skb_clone(skb
, GFP_KERNEL
);
1136 skb
->dev
= sdata
->dev
;
1137 /* XXX: is this sufficient for BPF? */
1138 skb_set_mac_header(skb
, 0);
1139 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1140 skb
->pkt_type
= PACKET_OTHERHOST
;
1141 skb
->protocol
= htons(ETH_P_802_2
);
1142 memset(skb
->cb
, 0, sizeof(skb
->cb
));
1148 read_unlock(&local
->sub_if_lock
);
1152 EXPORT_SYMBOL(ieee80211_tx_status
);
1154 struct ieee80211_hw
*ieee80211_alloc_hw(size_t priv_data_len
,
1155 const struct ieee80211_ops
*ops
)
1157 struct net_device
*mdev
;
1158 struct ieee80211_local
*local
;
1159 struct ieee80211_sub_if_data
*sdata
;
1161 struct wiphy
*wiphy
;
1163 /* Ensure 32-byte alignment of our private data and hw private data.
1164 * We use the wiphy priv data for both our ieee80211_local and for
1165 * the driver's private data
1167 * In memory it'll be like this:
1169 * +-------------------------+
1171 * +-------------------------+
1172 * | struct ieee80211_local |
1173 * +-------------------------+
1174 * | driver's private data |
1175 * +-------------------------+
1178 priv_size
= ((sizeof(struct ieee80211_local
) +
1179 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
) +
1182 wiphy
= wiphy_new(&mac80211_config_ops
, priv_size
);
1187 wiphy
->privid
= mac80211_wiphy_privid
;
1189 local
= wiphy_priv(wiphy
);
1190 local
->hw
.wiphy
= wiphy
;
1192 local
->hw
.priv
= (char *)local
+
1193 ((sizeof(struct ieee80211_local
) +
1194 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
);
1197 BUG_ON(!ops
->config
);
1198 BUG_ON(!ops
->add_interface
);
1201 /* for now, mdev needs sub_if_data :/ */
1202 mdev
= alloc_netdev(sizeof(struct ieee80211_sub_if_data
),
1203 "wmaster%d", ether_setup
);
1209 sdata
= IEEE80211_DEV_TO_SUB_IF(mdev
);
1210 mdev
->ieee80211_ptr
= &sdata
->wdev
;
1211 sdata
->wdev
.wiphy
= wiphy
;
1213 local
->hw
.queues
= 1; /* default */
1216 local
->rx_pre_handlers
= ieee80211_rx_pre_handlers
;
1217 local
->rx_handlers
= ieee80211_rx_handlers
;
1218 local
->tx_handlers
= ieee80211_tx_handlers
;
1220 local
->bridge_packets
= 1;
1222 local
->rts_threshold
= IEEE80211_MAX_RTS_THRESHOLD
;
1223 local
->fragmentation_threshold
= IEEE80211_MAX_FRAG_THRESHOLD
;
1224 local
->short_retry_limit
= 7;
1225 local
->long_retry_limit
= 4;
1226 local
->hw
.conf
.radio_enabled
= 1;
1228 local
->enabled_modes
= (unsigned int) -1;
1230 INIT_LIST_HEAD(&local
->modes_list
);
1232 rwlock_init(&local
->sub_if_lock
);
1233 INIT_LIST_HEAD(&local
->sub_if_list
);
1235 INIT_DELAYED_WORK(&local
->scan_work
, ieee80211_sta_scan_work
);
1236 ieee80211_rx_bss_list_init(mdev
);
1238 sta_info_init(local
);
1240 mdev
->hard_start_xmit
= ieee80211_master_start_xmit
;
1241 mdev
->open
= ieee80211_master_open
;
1242 mdev
->stop
= ieee80211_master_stop
;
1243 mdev
->type
= ARPHRD_IEEE80211
;
1244 mdev
->hard_header_parse
= header_parse_80211
;
1246 sdata
->type
= IEEE80211_IF_TYPE_AP
;
1248 sdata
->local
= local
;
1249 sdata
->u
.ap
.force_unicast_rateidx
= -1;
1250 sdata
->u
.ap
.max_ratectrl_rateidx
= -1;
1251 ieee80211_if_sdata_init(sdata
);
1252 list_add_tail(&sdata
->list
, &local
->sub_if_list
);
1254 tasklet_init(&local
->tx_pending_tasklet
, ieee80211_tx_pending
,
1255 (unsigned long)local
);
1256 tasklet_disable(&local
->tx_pending_tasklet
);
1258 tasklet_init(&local
->tasklet
,
1259 ieee80211_tasklet_handler
,
1260 (unsigned long) local
);
1261 tasklet_disable(&local
->tasklet
);
1263 skb_queue_head_init(&local
->skb_queue
);
1264 skb_queue_head_init(&local
->skb_queue_unreliable
);
1266 return local_to_hw(local
);
1268 EXPORT_SYMBOL(ieee80211_alloc_hw
);
1270 int ieee80211_register_hw(struct ieee80211_hw
*hw
)
1272 struct ieee80211_local
*local
= hw_to_local(hw
);
1276 result
= wiphy_register(local
->hw
.wiphy
);
1280 name
= wiphy_dev(local
->hw
.wiphy
)->driver
->name
;
1281 local
->hw
.workqueue
= create_singlethread_workqueue(name
);
1282 if (!local
->hw
.workqueue
) {
1284 goto fail_workqueue
;
1288 * The hardware needs headroom for sending the frame,
1289 * and we need some headroom for passing the frame to monitor
1290 * interfaces, but never both at the same time.
1292 local
->tx_headroom
= max_t(unsigned int , local
->hw
.extra_tx_headroom
,
1293 sizeof(struct ieee80211_tx_status_rtap_hdr
));
1295 debugfs_hw_add(local
);
1297 local
->hw
.conf
.beacon_int
= 1000;
1299 local
->wstats_flags
|= local
->hw
.max_rssi
?
1300 IW_QUAL_LEVEL_UPDATED
: IW_QUAL_LEVEL_INVALID
;
1301 local
->wstats_flags
|= local
->hw
.max_signal
?
1302 IW_QUAL_QUAL_UPDATED
: IW_QUAL_QUAL_INVALID
;
1303 local
->wstats_flags
|= local
->hw
.max_noise
?
1304 IW_QUAL_NOISE_UPDATED
: IW_QUAL_NOISE_INVALID
;
1305 if (local
->hw
.max_rssi
< 0 || local
->hw
.max_noise
< 0)
1306 local
->wstats_flags
|= IW_QUAL_DBM
;
1308 result
= sta_info_start(local
);
1313 result
= dev_alloc_name(local
->mdev
, local
->mdev
->name
);
1317 memcpy(local
->mdev
->dev_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1318 SET_NETDEV_DEV(local
->mdev
, wiphy_dev(local
->hw
.wiphy
));
1320 result
= register_netdevice(local
->mdev
);
1324 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1326 result
= ieee80211_init_rate_ctrl_alg(local
, NULL
);
1328 printk(KERN_DEBUG
"%s: Failed to initialize rate control "
1329 "algorithm\n", local
->mdev
->name
);
1333 result
= ieee80211_wep_init(local
);
1336 printk(KERN_DEBUG
"%s: Failed to initialize wep\n",
1341 ieee80211_install_qdisc(local
->mdev
);
1343 /* add one default STA interface */
1344 result
= ieee80211_if_add(local
->mdev
, "wlan%d", NULL
,
1345 IEEE80211_IF_TYPE_STA
);
1347 printk(KERN_WARNING
"%s: Failed to add default virtual iface\n",
1350 local
->reg_state
= IEEE80211_DEV_REGISTERED
;
1353 ieee80211_led_init(local
);
1358 rate_control_deinitialize(local
);
1360 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1361 unregister_netdevice(local
->mdev
);
1364 sta_info_stop(local
);
1366 debugfs_hw_del(local
);
1367 destroy_workqueue(local
->hw
.workqueue
);
1369 wiphy_unregister(local
->hw
.wiphy
);
1372 EXPORT_SYMBOL(ieee80211_register_hw
);
1374 int ieee80211_register_hwmode(struct ieee80211_hw
*hw
,
1375 struct ieee80211_hw_mode
*mode
)
1377 struct ieee80211_local
*local
= hw_to_local(hw
);
1378 struct ieee80211_rate
*rate
;
1381 INIT_LIST_HEAD(&mode
->list
);
1382 list_add_tail(&mode
->list
, &local
->modes_list
);
1384 local
->hw_modes
|= (1 << mode
->mode
);
1385 for (i
= 0; i
< mode
->num_rates
; i
++) {
1386 rate
= &(mode
->rates
[i
]);
1387 rate
->rate_inv
= CHAN_UTIL_RATE_LCM
/ rate
->rate
;
1389 ieee80211_prepare_rates(local
, mode
);
1391 if (!local
->oper_hw_mode
) {
1392 /* Default to this mode */
1393 local
->hw
.conf
.phymode
= mode
->mode
;
1394 local
->oper_hw_mode
= local
->scan_hw_mode
= mode
;
1395 local
->oper_channel
= local
->scan_channel
= &mode
->channels
[0];
1396 local
->hw
.conf
.mode
= local
->oper_hw_mode
;
1397 local
->hw
.conf
.chan
= local
->oper_channel
;
1400 if (!(hw
->flags
& IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED
))
1401 ieee80211_set_default_regdomain(mode
);
1405 EXPORT_SYMBOL(ieee80211_register_hwmode
);
1407 void ieee80211_unregister_hw(struct ieee80211_hw
*hw
)
1409 struct ieee80211_local
*local
= hw_to_local(hw
);
1410 struct ieee80211_sub_if_data
*sdata
, *tmp
;
1411 struct list_head tmp_list
;
1414 tasklet_kill(&local
->tx_pending_tasklet
);
1415 tasklet_kill(&local
->tasklet
);
1419 BUG_ON(local
->reg_state
!= IEEE80211_DEV_REGISTERED
);
1421 local
->reg_state
= IEEE80211_DEV_UNREGISTERED
;
1423 ieee80211_if_del_mgmt(local
);
1425 write_lock_bh(&local
->sub_if_lock
);
1426 list_replace_init(&local
->sub_if_list
, &tmp_list
);
1427 write_unlock_bh(&local
->sub_if_lock
);
1429 list_for_each_entry_safe(sdata
, tmp
, &tmp_list
, list
)
1430 __ieee80211_if_del(local
, sdata
);
1434 ieee80211_rx_bss_list_deinit(local
->mdev
);
1435 ieee80211_clear_tx_pending(local
);
1436 sta_info_stop(local
);
1437 rate_control_deinitialize(local
);
1438 debugfs_hw_del(local
);
1440 for (i
= 0; i
< NUM_IEEE80211_MODES
; i
++) {
1441 kfree(local
->supp_rates
[i
]);
1442 kfree(local
->basic_rates
[i
]);
1445 if (skb_queue_len(&local
->skb_queue
)
1446 || skb_queue_len(&local
->skb_queue_unreliable
))
1447 printk(KERN_WARNING
"%s: skb_queue not empty\n",
1449 skb_queue_purge(&local
->skb_queue
);
1450 skb_queue_purge(&local
->skb_queue_unreliable
);
1452 destroy_workqueue(local
->hw
.workqueue
);
1453 wiphy_unregister(local
->hw
.wiphy
);
1454 ieee80211_wep_free(local
);
1455 ieee80211_led_exit(local
);
1457 EXPORT_SYMBOL(ieee80211_unregister_hw
);
1459 void ieee80211_free_hw(struct ieee80211_hw
*hw
)
1461 struct ieee80211_local
*local
= hw_to_local(hw
);
1463 ieee80211_if_free(local
->mdev
);
1464 wiphy_free(local
->hw
.wiphy
);
1466 EXPORT_SYMBOL(ieee80211_free_hw
);
1468 struct net_device_stats
*ieee80211_dev_stats(struct net_device
*dev
)
1470 struct ieee80211_sub_if_data
*sdata
;
1471 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1472 return &sdata
->stats
;
1475 static int __init
ieee80211_init(void)
1477 struct sk_buff
*skb
;
1480 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data
) > sizeof(skb
->cb
));
1482 ret
= ieee80211_wme_register();
1484 printk(KERN_DEBUG
"ieee80211_init: failed to "
1485 "initialize WME (err=%d)\n", ret
);
1489 ieee80211_debugfs_netdev_init();
1490 ieee80211_regdomain_init();
1495 static void __exit
ieee80211_exit(void)
1497 ieee80211_wme_unregister();
1498 ieee80211_debugfs_netdev_exit();
1502 subsys_initcall(ieee80211_init
);
1503 module_exit(ieee80211_exit
);
1505 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1506 MODULE_LICENSE("GPL");