2 * BSS client mode implementation
3 * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
15 * order BSS list by RSSI(?) ("quality of AP")
16 * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
19 #include <linux/delay.h>
20 #include <linux/if_ether.h>
21 #include <linux/skbuff.h>
22 #include <linux/netdevice.h>
23 #include <linux/if_arp.h>
24 #include <linux/wireless.h>
25 #include <linux/random.h>
26 #include <linux/etherdevice.h>
27 #include <net/iw_handler.h>
28 #include <asm/types.h>
30 #include <net/mac80211.h>
31 #include "ieee80211_i.h"
32 #include "ieee80211_rate.h"
33 #include "ieee80211_led.h"
35 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
36 #define IEEE80211_AUTH_MAX_TRIES 3
37 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
38 #define IEEE80211_ASSOC_MAX_TRIES 3
39 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
40 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
41 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
42 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
43 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
44 #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
46 #define IEEE80211_PROBE_DELAY (HZ / 33)
47 #define IEEE80211_CHANNEL_TIME (HZ / 33)
48 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
49 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
50 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
51 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
53 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
56 #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
58 #define ERP_INFO_USE_PROTECTION BIT(1)
60 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
61 u8
*ssid
, size_t ssid_len
);
62 static struct ieee80211_sta_bss
*
63 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int channel
,
64 u8
*ssid
, u8 ssid_len
);
65 static void ieee80211_rx_bss_put(struct net_device
*dev
,
66 struct ieee80211_sta_bss
*bss
);
67 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
68 struct ieee80211_if_sta
*ifsta
);
69 static int ieee80211_sta_wep_configured(struct net_device
*dev
);
70 static int ieee80211_sta_start_scan(struct net_device
*dev
,
71 u8
*ssid
, size_t ssid_len
);
72 static int ieee80211_sta_config_auth(struct net_device
*dev
,
73 struct ieee80211_if_sta
*ifsta
);
76 /* Parsed Information Elements */
77 struct ieee802_11_elems
{
94 /* length of them, respectively */
106 u8 ext_supp_rates_len
;
111 static void ieee802_11_parse_elems(u8
*start
, size_t len
,
112 struct ieee802_11_elems
*elems
)
117 memset(elems
, 0, sizeof(*elems
));
132 elems
->ssid_len
= elen
;
134 case WLAN_EID_SUPP_RATES
:
135 elems
->supp_rates
= pos
;
136 elems
->supp_rates_len
= elen
;
138 case WLAN_EID_FH_PARAMS
:
139 elems
->fh_params
= pos
;
140 elems
->fh_params_len
= elen
;
142 case WLAN_EID_DS_PARAMS
:
143 elems
->ds_params
= pos
;
144 elems
->ds_params_len
= elen
;
146 case WLAN_EID_CF_PARAMS
:
147 elems
->cf_params
= pos
;
148 elems
->cf_params_len
= elen
;
152 elems
->tim_len
= elen
;
154 case WLAN_EID_IBSS_PARAMS
:
155 elems
->ibss_params
= pos
;
156 elems
->ibss_params_len
= elen
;
158 case WLAN_EID_CHALLENGE
:
159 elems
->challenge
= pos
;
160 elems
->challenge_len
= elen
;
163 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
165 /* Microsoft OUI (00:50:F2) */
167 /* OUI Type 1 - WPA IE */
169 elems
->wpa_len
= elen
;
170 } else if (elen
>= 5 && pos
[3] == 2) {
172 elems
->wmm_info
= pos
;
173 elems
->wmm_info_len
= elen
;
174 } else if (pos
[4] == 1) {
175 elems
->wmm_param
= pos
;
176 elems
->wmm_param_len
= elen
;
183 elems
->rsn_len
= elen
;
185 case WLAN_EID_ERP_INFO
:
186 elems
->erp_info
= pos
;
187 elems
->erp_info_len
= elen
;
189 case WLAN_EID_EXT_SUPP_RATES
:
190 elems
->ext_supp_rates
= pos
;
191 elems
->ext_supp_rates_len
= elen
;
203 static int ecw2cw(int ecw
)
213 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
214 struct ieee80211_if_sta
*ifsta
,
215 u8
*wmm_param
, size_t wmm_param_len
)
217 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
218 struct ieee80211_tx_queue_params params
;
223 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
225 count
= wmm_param
[6] & 0x0f;
226 if (count
== ifsta
->wmm_last_param_set
)
228 ifsta
->wmm_last_param_set
= count
;
231 left
= wmm_param_len
- 8;
233 memset(¶ms
, 0, sizeof(params
));
235 if (!local
->ops
->conf_tx
)
239 for (; left
>= 4; left
-= 4, pos
+= 4) {
240 int aci
= (pos
[0] >> 5) & 0x03;
241 int acm
= (pos
[0] >> 4) & 0x01;
246 queue
= IEEE80211_TX_QUEUE_DATA3
;
248 local
->wmm_acm
|= BIT(0) | BIT(3);
252 queue
= IEEE80211_TX_QUEUE_DATA1
;
254 local
->wmm_acm
|= BIT(4) | BIT(5);
258 queue
= IEEE80211_TX_QUEUE_DATA0
;
260 local
->wmm_acm
|= BIT(6) | BIT(7);
265 queue
= IEEE80211_TX_QUEUE_DATA2
;
267 local
->wmm_acm
|= BIT(1) | BIT(2);
272 params
.aifs
= pos
[0] & 0x0f;
273 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
274 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
275 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
276 params
.burst_time
= (pos
[2] | (pos
[3] << 8)) * 32 / 100;
277 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
278 "cWmin=%d cWmax=%d burst=%d\n",
279 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
280 params
.cw_max
, params
.burst_time
);
281 /* TODO: handle ACM (block TX, fallback to next lowest allowed
283 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
284 printk(KERN_DEBUG
"%s: failed to set TX queue "
285 "parameters for queue %d\n", dev
->name
, queue
);
291 static void ieee80211_handle_erp_ie(struct net_device
*dev
, u8 erp_value
)
293 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
294 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
295 int use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
296 int preamble_mode
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) != 0;
298 DECLARE_MAC_BUF(mac
);
300 if (use_protection
!= !!(sdata
->flags
& IEEE80211_SDATA_USE_PROTECTION
)) {
301 if (net_ratelimit()) {
302 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
305 use_protection
? "enabled" : "disabled",
306 print_mac(mac
, ifsta
->bssid
));
309 sdata
->flags
|= IEEE80211_SDATA_USE_PROTECTION
;
311 sdata
->flags
&= ~IEEE80211_SDATA_USE_PROTECTION
;
312 changes
|= IEEE80211_ERP_CHANGE_PROTECTION
;
315 if (preamble_mode
!= !(sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
)) {
316 if (net_ratelimit()) {
317 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
320 (preamble_mode
== WLAN_ERP_PREAMBLE_SHORT
) ?
322 print_mac(mac
, ifsta
->bssid
));
325 sdata
->flags
&= ~IEEE80211_SDATA_SHORT_PREAMBLE
;
327 sdata
->flags
|= IEEE80211_SDATA_SHORT_PREAMBLE
;
328 changes
|= IEEE80211_ERP_CHANGE_PREAMBLE
;
332 ieee80211_erp_info_change_notify(dev
, changes
);
336 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
337 struct ieee80211_if_sta
*ifsta
)
342 union iwreq_data wrqu
;
344 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
347 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
348 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
352 len
= sprintf(buf
, "ASSOCINFO(");
353 if (ifsta
->assocreq_ies
) {
354 len
+= sprintf(buf
+ len
, "ReqIEs=");
355 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
356 len
+= sprintf(buf
+ len
, "%02x",
357 ifsta
->assocreq_ies
[i
]);
360 if (ifsta
->assocresp_ies
) {
361 if (ifsta
->assocreq_ies
)
362 len
+= sprintf(buf
+ len
, " ");
363 len
+= sprintf(buf
+ len
, "RespIEs=");
364 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
365 len
+= sprintf(buf
+ len
, "%02x",
366 ifsta
->assocresp_ies
[i
]);
369 len
+= sprintf(buf
+ len
, ")");
371 if (len
> IW_CUSTOM_MAX
) {
372 len
= sprintf(buf
, "ASSOCRESPIE=");
373 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
374 len
+= sprintf(buf
+ len
, "%02x",
375 ifsta
->assocresp_ies
[i
]);
379 memset(&wrqu
, 0, sizeof(wrqu
));
380 wrqu
.data
.length
= len
;
381 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
387 static void ieee80211_set_associated(struct net_device
*dev
,
388 struct ieee80211_if_sta
*ifsta
,
391 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
392 union iwreq_data wrqu
;
394 if (!!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) == assoc
)
398 struct ieee80211_sub_if_data
*sdata
;
399 struct ieee80211_sta_bss
*bss
;
401 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
403 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
404 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
407 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
408 local
->hw
.conf
.channel
,
409 ifsta
->ssid
, ifsta
->ssid_len
);
411 if (bss
->has_erp_value
)
412 ieee80211_handle_erp_ie(dev
, bss
->erp_value
);
413 ieee80211_rx_bss_put(dev
, bss
);
416 netif_carrier_on(dev
);
417 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
418 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
419 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
420 ieee80211_sta_send_associnfo(dev
, ifsta
);
422 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
424 netif_carrier_off(dev
);
425 ieee80211_reset_erp_info(dev
);
426 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
428 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
429 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
430 ifsta
->last_probe
= jiffies
;
431 ieee80211_led_assoc(local
, assoc
);
434 static void ieee80211_set_disassoc(struct net_device
*dev
,
435 struct ieee80211_if_sta
*ifsta
, int deauth
)
438 ifsta
->auth_tries
= 0;
439 ifsta
->assoc_tries
= 0;
440 ieee80211_set_associated(dev
, ifsta
, 0);
443 static void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
446 struct ieee80211_sub_if_data
*sdata
;
447 struct ieee80211_tx_packet_data
*pkt_data
;
449 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
450 skb
->dev
= sdata
->local
->mdev
;
451 skb_set_mac_header(skb
, 0);
452 skb_set_network_header(skb
, 0);
453 skb_set_transport_header(skb
, 0);
455 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
456 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
457 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
459 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
465 static void ieee80211_send_auth(struct net_device
*dev
,
466 struct ieee80211_if_sta
*ifsta
,
467 int transaction
, u8
*extra
, size_t extra_len
,
470 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
472 struct ieee80211_mgmt
*mgmt
;
474 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
475 sizeof(*mgmt
) + 6 + extra_len
);
477 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
478 "frame\n", dev
->name
);
481 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
483 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
484 memset(mgmt
, 0, 24 + 6);
485 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
486 IEEE80211_STYPE_AUTH
);
488 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
489 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
490 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
491 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
492 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
493 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
494 ifsta
->auth_transaction
= transaction
+ 1;
495 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
497 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
499 ieee80211_sta_tx(dev
, skb
, encrypt
);
503 static void ieee80211_authenticate(struct net_device
*dev
,
504 struct ieee80211_if_sta
*ifsta
)
506 DECLARE_MAC_BUF(mac
);
509 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
510 printk(KERN_DEBUG
"%s: authentication with AP %s"
512 dev
->name
, print_mac(mac
, ifsta
->bssid
));
513 ifsta
->state
= IEEE80211_DISABLED
;
517 ifsta
->state
= IEEE80211_AUTHENTICATE
;
518 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
519 dev
->name
, print_mac(mac
, ifsta
->bssid
));
521 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
523 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
527 static void ieee80211_send_assoc(struct net_device
*dev
,
528 struct ieee80211_if_sta
*ifsta
)
530 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
531 struct ieee80211_hw_mode
*mode
;
533 struct ieee80211_mgmt
*mgmt
;
537 struct ieee80211_sta_bss
*bss
;
540 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
541 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
544 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
545 "frame\n", dev
->name
);
548 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
550 mode
= local
->oper_hw_mode
;
551 capab
= ifsta
->capab
;
552 if (mode
->mode
== MODE_IEEE80211G
) {
553 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
|
554 WLAN_CAPABILITY_SHORT_PREAMBLE
;
556 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
, local
->hw
.conf
.channel
,
557 ifsta
->ssid
, ifsta
->ssid_len
);
559 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
560 capab
|= WLAN_CAPABILITY_PRIVACY
;
564 ieee80211_rx_bss_put(dev
, bss
);
567 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
569 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
570 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
571 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
573 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
575 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
576 IEEE80211_STYPE_REASSOC_REQ
);
577 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
578 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
579 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
583 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
584 IEEE80211_STYPE_ASSOC_REQ
);
585 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
586 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
590 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
591 *pos
++ = WLAN_EID_SSID
;
592 *pos
++ = ifsta
->ssid_len
;
593 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
595 len
= mode
->num_rates
;
598 pos
= skb_put(skb
, len
+ 2);
599 *pos
++ = WLAN_EID_SUPP_RATES
;
601 for (i
= 0; i
< len
; i
++) {
602 int rate
= mode
->rates
[i
].rate
;
603 *pos
++ = (u8
) (rate
/ 5);
606 if (mode
->num_rates
> len
) {
607 pos
= skb_put(skb
, mode
->num_rates
- len
+ 2);
608 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
609 *pos
++ = mode
->num_rates
- len
;
610 for (i
= len
; i
< mode
->num_rates
; i
++) {
611 int rate
= mode
->rates
[i
].rate
;
612 *pos
++ = (u8
) (rate
/ 5);
616 if (ifsta
->extra_ie
) {
617 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
618 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
621 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
622 pos
= skb_put(skb
, 9);
623 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
624 *pos
++ = 7; /* len */
625 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
628 *pos
++ = 2; /* WME */
629 *pos
++ = 0; /* WME info */
630 *pos
++ = 1; /* WME ver */
634 kfree(ifsta
->assocreq_ies
);
635 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
636 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
637 if (ifsta
->assocreq_ies
)
638 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
640 ieee80211_sta_tx(dev
, skb
, 0);
644 static void ieee80211_send_deauth(struct net_device
*dev
,
645 struct ieee80211_if_sta
*ifsta
, u16 reason
)
647 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
649 struct ieee80211_mgmt
*mgmt
;
651 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
653 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
654 "frame\n", dev
->name
);
657 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
659 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
661 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
662 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
663 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
664 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
665 IEEE80211_STYPE_DEAUTH
);
667 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
669 ieee80211_sta_tx(dev
, skb
, 0);
673 static void ieee80211_send_disassoc(struct net_device
*dev
,
674 struct ieee80211_if_sta
*ifsta
, u16 reason
)
676 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
678 struct ieee80211_mgmt
*mgmt
;
680 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
682 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
683 "frame\n", dev
->name
);
686 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
688 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
690 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
691 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
692 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
693 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
694 IEEE80211_STYPE_DISASSOC
);
696 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
698 ieee80211_sta_tx(dev
, skb
, 0);
702 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
703 struct ieee80211_if_sta
*ifsta
)
705 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
706 struct ieee80211_sta_bss
*bss
;
711 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
714 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
, local
->hw
.conf
.channel
,
715 ifsta
->ssid
, ifsta
->ssid_len
);
719 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
720 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
721 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
723 ieee80211_rx_bss_put(dev
, bss
);
725 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
732 static void ieee80211_associate(struct net_device
*dev
,
733 struct ieee80211_if_sta
*ifsta
)
735 DECLARE_MAC_BUF(mac
);
737 ifsta
->assoc_tries
++;
738 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
739 printk(KERN_DEBUG
"%s: association with AP %s"
741 dev
->name
, print_mac(mac
, ifsta
->bssid
));
742 ifsta
->state
= IEEE80211_DISABLED
;
746 ifsta
->state
= IEEE80211_ASSOCIATE
;
747 printk(KERN_DEBUG
"%s: associate with AP %s\n",
748 dev
->name
, print_mac(mac
, ifsta
->bssid
));
749 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
750 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
751 "mixed-cell disabled - abort association\n", dev
->name
);
752 ifsta
->state
= IEEE80211_DISABLED
;
756 ieee80211_send_assoc(dev
, ifsta
);
758 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
762 static void ieee80211_associated(struct net_device
*dev
,
763 struct ieee80211_if_sta
*ifsta
)
765 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
766 struct sta_info
*sta
;
768 DECLARE_MAC_BUF(mac
);
770 /* TODO: start monitoring current AP signal quality and number of
771 * missed beacons. Scan other channels every now and then and search
773 /* TODO: remove expired BSSes */
775 ifsta
->state
= IEEE80211_ASSOCIATED
;
777 sta
= sta_info_get(local
, ifsta
->bssid
);
779 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
780 dev
->name
, print_mac(mac
, ifsta
->bssid
));
784 if (time_after(jiffies
,
785 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
786 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
787 printk(KERN_DEBUG
"%s: No ProbeResp from "
788 "current AP %s - assume out of "
790 dev
->name
, print_mac(mac
, ifsta
->bssid
));
794 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
796 local
->scan_ssid_len
);
797 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
799 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
800 if (time_after(jiffies
, ifsta
->last_probe
+
801 IEEE80211_PROBE_INTERVAL
)) {
802 ifsta
->last_probe
= jiffies
;
803 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
811 union iwreq_data wrqu
;
812 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
813 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
814 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
815 mod_timer(&ifsta
->timer
, jiffies
+
816 IEEE80211_MONITORING_INTERVAL
+ 30 * HZ
);
818 mod_timer(&ifsta
->timer
, jiffies
+
819 IEEE80211_MONITORING_INTERVAL
);
824 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
825 u8
*ssid
, size_t ssid_len
)
827 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
828 struct ieee80211_hw_mode
*mode
;
830 struct ieee80211_mgmt
*mgmt
;
831 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
834 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
836 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
837 "request\n", dev
->name
);
840 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
842 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
844 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
845 IEEE80211_STYPE_PROBE_REQ
);
846 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
848 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
849 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
851 memset(mgmt
->da
, 0xff, ETH_ALEN
);
852 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
854 pos
= skb_put(skb
, 2 + ssid_len
);
855 *pos
++ = WLAN_EID_SSID
;
857 memcpy(pos
, ssid
, ssid_len
);
859 supp_rates
= skb_put(skb
, 2);
860 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
862 mode
= local
->oper_hw_mode
;
863 for (i
= 0; i
< mode
->num_rates
; i
++) {
864 struct ieee80211_rate
*rate
= &mode
->rates
[i
];
865 if (!(rate
->flags
& IEEE80211_RATE_SUPPORTED
))
868 pos
= skb_put(skb
, 1);
870 } else if (supp_rates
[1] == 8) {
871 esupp_rates
= skb_put(skb
, 3);
872 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
874 pos
= &esupp_rates
[2];
876 pos
= skb_put(skb
, 1);
879 *pos
= rate
->rate
/ 5;
882 ieee80211_sta_tx(dev
, skb
, 0);
886 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
888 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
889 if (!sdata
|| !sdata
->default_key
||
890 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
896 static void ieee80211_auth_completed(struct net_device
*dev
,
897 struct ieee80211_if_sta
*ifsta
)
899 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
900 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
901 ieee80211_associate(dev
, ifsta
);
905 static void ieee80211_auth_challenge(struct net_device
*dev
,
906 struct ieee80211_if_sta
*ifsta
,
907 struct ieee80211_mgmt
*mgmt
,
911 struct ieee802_11_elems elems
;
913 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
914 pos
= mgmt
->u
.auth
.variable
;
915 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
916 if (!elems
.challenge
) {
917 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
918 "frame\n", dev
->name
);
921 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
922 elems
.challenge_len
+ 2, 1);
926 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
927 struct ieee80211_if_sta
*ifsta
,
928 struct ieee80211_mgmt
*mgmt
,
931 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
932 u16 auth_alg
, auth_transaction
, status_code
;
933 DECLARE_MAC_BUF(mac
);
935 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
936 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
937 printk(KERN_DEBUG
"%s: authentication frame received from "
938 "%s, but not in authenticate state - ignored\n",
939 dev
->name
, print_mac(mac
, mgmt
->sa
));
944 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
945 "received from %s - ignored\n",
946 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
950 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
951 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
952 printk(KERN_DEBUG
"%s: authentication frame received from "
953 "unknown AP (SA=%s BSSID=%s) - "
954 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
955 print_mac(mac
, mgmt
->bssid
));
959 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
960 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
961 printk(KERN_DEBUG
"%s: authentication frame received from "
962 "unknown BSSID (SA=%s BSSID=%s) - "
963 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
964 print_mac(mac
, mgmt
->bssid
));
968 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
969 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
970 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
972 printk(KERN_DEBUG
"%s: RX authentication from %s (alg=%d "
973 "transaction=%d status=%d)\n",
974 dev
->name
, print_mac(mac
, mgmt
->sa
), auth_alg
,
975 auth_transaction
, status_code
);
977 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
978 /* IEEE 802.11 standard does not require authentication in IBSS
979 * networks and most implementations do not seem to use it.
980 * However, try to reply to authentication attempts if someone
981 * has actually implemented this.
982 * TODO: Could implement shared key authentication. */
983 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
984 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
985 "frame (alg=%d transaction=%d)\n",
986 dev
->name
, auth_alg
, auth_transaction
);
989 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
992 if (auth_alg
!= ifsta
->auth_alg
||
993 auth_transaction
!= ifsta
->auth_transaction
) {
994 printk(KERN_DEBUG
"%s: unexpected authentication frame "
995 "(alg=%d transaction=%d)\n",
996 dev
->name
, auth_alg
, auth_transaction
);
1000 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1001 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1002 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1003 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1005 const int num_algs
= ARRAY_SIZE(algs
);
1007 algs
[0] = algs
[1] = algs
[2] = 0xff;
1008 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1009 algs
[0] = WLAN_AUTH_OPEN
;
1010 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1011 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1012 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1013 algs
[2] = WLAN_AUTH_LEAP
;
1014 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1016 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1020 for (i
= 0; i
< num_algs
; i
++) {
1022 if (pos
>= num_algs
)
1024 if (algs
[pos
] == ifsta
->auth_alg
||
1027 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1028 !ieee80211_sta_wep_configured(dev
))
1030 ifsta
->auth_alg
= algs
[pos
];
1031 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1033 dev
->name
, ifsta
->auth_alg
);
1040 switch (ifsta
->auth_alg
) {
1041 case WLAN_AUTH_OPEN
:
1042 case WLAN_AUTH_LEAP
:
1043 ieee80211_auth_completed(dev
, ifsta
);
1045 case WLAN_AUTH_SHARED_KEY
:
1046 if (ifsta
->auth_transaction
== 4)
1047 ieee80211_auth_completed(dev
, ifsta
);
1049 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1055 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1056 struct ieee80211_if_sta
*ifsta
,
1057 struct ieee80211_mgmt
*mgmt
,
1061 DECLARE_MAC_BUF(mac
);
1064 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1065 "received from %s - ignored\n",
1066 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1070 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1071 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1072 "unknown AP (SA=%s BSSID=%s) - "
1073 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1074 print_mac(mac
, mgmt
->bssid
));
1078 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1080 printk(KERN_DEBUG
"%s: RX deauthentication from %s"
1082 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1084 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1085 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1088 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1089 ifsta
->state
== IEEE80211_ASSOCIATE
||
1090 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1091 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1092 mod_timer(&ifsta
->timer
, jiffies
+
1093 IEEE80211_RETRY_AUTH_INTERVAL
);
1096 ieee80211_set_disassoc(dev
, ifsta
, 1);
1097 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1101 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1102 struct ieee80211_if_sta
*ifsta
,
1103 struct ieee80211_mgmt
*mgmt
,
1107 DECLARE_MAC_BUF(mac
);
1110 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1111 "received from %s - ignored\n",
1112 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1116 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1117 printk(KERN_DEBUG
"%s: disassociation frame received from "
1118 "unknown AP (SA=%s BSSID=%s) - "
1119 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1120 print_mac(mac
, mgmt
->bssid
));
1124 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1126 printk(KERN_DEBUG
"%s: RX disassociation from %s"
1128 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1130 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1131 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1133 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1134 ifsta
->state
= IEEE80211_ASSOCIATE
;
1135 mod_timer(&ifsta
->timer
, jiffies
+
1136 IEEE80211_RETRY_AUTH_INTERVAL
);
1139 ieee80211_set_disassoc(dev
, ifsta
, 0);
1143 static void ieee80211_rx_mgmt_assoc_resp(struct net_device
*dev
,
1144 struct ieee80211_if_sta
*ifsta
,
1145 struct ieee80211_mgmt
*mgmt
,
1149 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1150 struct ieee80211_hw_mode
*mode
;
1151 struct sta_info
*sta
;
1153 u16 capab_info
, status_code
, aid
;
1154 struct ieee802_11_elems elems
;
1157 DECLARE_MAC_BUF(mac
);
1159 /* AssocResp and ReassocResp have identical structure, so process both
1160 * of them in this function. */
1162 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1163 printk(KERN_DEBUG
"%s: association frame received from "
1164 "%s, but not in associate state - ignored\n",
1165 dev
->name
, print_mac(mac
, mgmt
->sa
));
1170 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1171 "received from %s - ignored\n",
1172 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1176 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1177 printk(KERN_DEBUG
"%s: association frame received from "
1178 "unknown AP (SA=%s BSSID=%s) - "
1179 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1180 print_mac(mac
, mgmt
->bssid
));
1184 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1185 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1186 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1188 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
1189 "status=%d aid=%d)\n",
1190 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
1191 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
1193 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1194 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1195 dev
->name
, status_code
);
1196 /* if this was a reassociation, ensure we try a "full"
1197 * association next time. This works around some broken APs
1198 * which do not correctly reject reassociation requests. */
1199 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1203 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1204 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1205 "set\n", dev
->name
, aid
);
1206 aid
&= ~(BIT(15) | BIT(14));
1208 pos
= mgmt
->u
.assoc_resp
.variable
;
1209 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1211 if (!elems
.supp_rates
) {
1212 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1217 /* it probably doesn't, but if the frame includes an ERP value then
1218 * update our stored copy */
1219 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
1220 struct ieee80211_sta_bss
*bss
1221 = ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
1222 local
->hw
.conf
.channel
,
1223 ifsta
->ssid
, ifsta
->ssid_len
);
1225 bss
->erp_value
= elems
.erp_info
[0];
1226 bss
->has_erp_value
= 1;
1227 ieee80211_rx_bss_put(dev
, bss
);
1231 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1233 ifsta
->ap_capab
= capab_info
;
1235 kfree(ifsta
->assocresp_ies
);
1236 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1237 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1238 if (ifsta
->assocresp_ies
)
1239 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1241 ieee80211_set_associated(dev
, ifsta
, 1);
1243 /* Add STA entry for the AP */
1244 sta
= sta_info_get(local
, ifsta
->bssid
);
1246 struct ieee80211_sta_bss
*bss
;
1247 sta
= sta_info_add(local
, dev
, ifsta
->bssid
, GFP_KERNEL
);
1249 printk(KERN_DEBUG
"%s: failed to add STA entry for the"
1250 " AP\n", dev
->name
);
1253 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
1254 local
->hw
.conf
.channel
,
1255 ifsta
->ssid
, ifsta
->ssid_len
);
1257 sta
->last_rssi
= bss
->rssi
;
1258 sta
->last_signal
= bss
->signal
;
1259 sta
->last_noise
= bss
->noise
;
1260 ieee80211_rx_bss_put(dev
, bss
);
1265 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
;
1268 mode
= local
->oper_hw_mode
;
1269 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1270 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1271 for (j
= 0; j
< mode
->num_rates
; j
++)
1272 if (mode
->rates
[j
].rate
== rate
)
1275 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1276 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1277 for (j
= 0; j
< mode
->num_rates
; j
++)
1278 if (mode
->rates
[j
].rate
== rate
)
1281 sta
->supp_rates
= rates
;
1283 rate_control_rate_init(sta
, local
);
1285 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1286 sta
->flags
|= WLAN_STA_WME
;
1287 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1288 elems
.wmm_param_len
);
1294 ieee80211_associated(dev
, ifsta
);
1298 /* Caller must hold local->sta_bss_lock */
1299 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
1300 struct ieee80211_sta_bss
*bss
)
1302 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1303 bss
->hnext
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1304 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] = bss
;
1308 /* Caller must hold local->sta_bss_lock */
1309 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
1310 struct ieee80211_sta_bss
*bss
)
1312 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1313 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
1314 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1318 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
1321 prev
->hnext
= bss
->hnext
;
1330 static struct ieee80211_sta_bss
*
1331 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int channel
,
1332 u8
*ssid
, u8 ssid_len
)
1334 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1335 struct ieee80211_sta_bss
*bss
;
1337 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
1340 atomic_inc(&bss
->users
);
1341 atomic_inc(&bss
->users
);
1342 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
1343 bss
->channel
= channel
;
1344 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
1345 memcpy(bss
->ssid
, ssid
, ssid_len
);
1346 bss
->ssid_len
= ssid_len
;
1349 spin_lock_bh(&local
->sta_bss_lock
);
1350 /* TODO: order by RSSI? */
1351 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
1352 __ieee80211_rx_bss_hash_add(dev
, bss
);
1353 spin_unlock_bh(&local
->sta_bss_lock
);
1358 static struct ieee80211_sta_bss
*
1359 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int channel
,
1360 u8
*ssid
, u8 ssid_len
)
1362 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1363 struct ieee80211_sta_bss
*bss
;
1365 spin_lock_bh(&local
->sta_bss_lock
);
1366 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
1368 if (!memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
1369 bss
->channel
== channel
&&
1370 bss
->ssid_len
== ssid_len
&&
1371 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
1372 atomic_inc(&bss
->users
);
1377 spin_unlock_bh(&local
->sta_bss_lock
);
1382 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
1391 static void ieee80211_rx_bss_put(struct net_device
*dev
,
1392 struct ieee80211_sta_bss
*bss
)
1394 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1395 if (!atomic_dec_and_test(&bss
->users
))
1398 spin_lock_bh(&local
->sta_bss_lock
);
1399 __ieee80211_rx_bss_hash_del(dev
, bss
);
1400 list_del(&bss
->list
);
1401 spin_unlock_bh(&local
->sta_bss_lock
);
1402 ieee80211_rx_bss_free(bss
);
1406 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
1408 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1409 spin_lock_init(&local
->sta_bss_lock
);
1410 INIT_LIST_HEAD(&local
->sta_bss_list
);
1414 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
1416 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1417 struct ieee80211_sta_bss
*bss
, *tmp
;
1419 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
1420 ieee80211_rx_bss_put(dev
, bss
);
1424 static void ieee80211_rx_bss_info(struct net_device
*dev
,
1425 struct ieee80211_mgmt
*mgmt
,
1427 struct ieee80211_rx_status
*rx_status
,
1430 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1431 struct ieee802_11_elems elems
;
1434 struct ieee80211_sta_bss
*bss
;
1435 struct sta_info
*sta
;
1436 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1438 DECLARE_MAC_BUF(mac
);
1439 DECLARE_MAC_BUF(mac2
);
1441 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
1442 return; /* ignore ProbeResp to foreign address */
1445 printk(KERN_DEBUG
"%s: RX %s from %s to %s\n",
1446 dev
->name
, beacon
? "Beacon" : "Probe Response",
1447 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
));
1450 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
1454 timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
1456 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
1457 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0) {
1458 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1459 static unsigned long last_tsf_debug
= 0;
1461 if (local
->ops
->get_tsf
)
1462 tsf
= local
->ops
->get_tsf(local_to_hw(local
));
1465 if (time_after(jiffies
, last_tsf_debug
+ 5 * HZ
)) {
1466 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
1467 "%s TSF=0x%llx BCN=0x%llx diff=%lld "
1469 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->bssid
),
1470 (unsigned long long)tsf
,
1471 (unsigned long long)timestamp
,
1472 (unsigned long long)(tsf
- timestamp
),
1474 last_tsf_debug
= jiffies
;
1476 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1479 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
1481 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
1482 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
1483 (sta
= sta_info_get(local
, mgmt
->sa
))) {
1484 struct ieee80211_hw_mode
*mode
;
1485 struct ieee80211_rate
*rates
;
1487 u32 supp_rates
, prev_rates
;
1490 mode
= local
->sta_scanning
?
1491 local
->scan_hw_mode
: local
->oper_hw_mode
;
1492 rates
= mode
->rates
;
1493 num_rates
= mode
->num_rates
;
1496 for (i
= 0; i
< elems
.supp_rates_len
+
1497 elems
.ext_supp_rates_len
; i
++) {
1500 if (i
< elems
.supp_rates_len
)
1501 rate
= elems
.supp_rates
[i
];
1502 else if (elems
.ext_supp_rates
)
1503 rate
= elems
.ext_supp_rates
1504 [i
- elems
.supp_rates_len
];
1505 own_rate
= 5 * (rate
& 0x7f);
1506 for (j
= 0; j
< num_rates
; j
++)
1507 if (rates
[j
].rate
== own_rate
)
1508 supp_rates
|= BIT(j
);
1511 prev_rates
= sta
->supp_rates
;
1512 sta
->supp_rates
&= supp_rates
;
1513 if (sta
->supp_rates
== 0) {
1514 /* No matching rates - this should not really happen.
1515 * Make sure that at least one rate is marked
1516 * supported to avoid issues with TX rate ctrl. */
1517 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
1519 if (sta
->supp_rates
!= prev_rates
) {
1520 printk(KERN_DEBUG
"%s: updated supp_rates set for "
1521 "%s based on beacon info (0x%x & 0x%x -> "
1523 dev
->name
, print_mac(mac
, sta
->addr
), prev_rates
,
1524 supp_rates
, sta
->supp_rates
);
1532 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
1533 channel
= elems
.ds_params
[0];
1535 channel
= rx_status
->channel
;
1537 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, channel
,
1538 elems
.ssid
, elems
.ssid_len
);
1540 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, channel
,
1541 elems
.ssid
, elems
.ssid_len
);
1546 /* TODO: order by RSSI? */
1547 spin_lock_bh(&local
->sta_bss_lock
);
1548 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
1549 spin_unlock_bh(&local
->sta_bss_lock
);
1553 if (bss
->probe_resp
&& beacon
) {
1554 /* Do not allow beacon to override data from Probe Response. */
1555 ieee80211_rx_bss_put(dev
, bss
);
1559 /* save the ERP value so that it is available at association time */
1560 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
1561 bss
->erp_value
= elems
.erp_info
[0];
1562 bss
->has_erp_value
= 1;
1565 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
1566 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
1568 bss
->supp_rates_len
= 0;
1569 if (elems
.supp_rates
) {
1570 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
1571 if (clen
> elems
.supp_rates_len
)
1572 clen
= elems
.supp_rates_len
;
1573 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
1575 bss
->supp_rates_len
+= clen
;
1577 if (elems
.ext_supp_rates
) {
1578 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
1579 if (clen
> elems
.ext_supp_rates_len
)
1580 clen
= elems
.ext_supp_rates_len
;
1581 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
1582 elems
.ext_supp_rates
, clen
);
1583 bss
->supp_rates_len
+= clen
;
1587 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
1588 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
1590 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
1592 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
1593 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
1595 bss
->wpa_ie_len
= 0;
1596 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
1599 bss
->wpa_ie_len
= 0;
1603 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
1604 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
1606 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
1608 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
1609 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
1611 bss
->rsn_ie_len
= 0;
1612 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
1615 bss
->rsn_ie_len
= 0;
1618 if (elems
.wmm_param
&&
1619 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
1620 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
1622 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
1624 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
1625 elems
.wmm_param_len
+ 2);
1626 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
1628 bss
->wmm_ie_len
= 0;
1629 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
1632 bss
->wmm_ie_len
= 0;
1636 bss
->hw_mode
= rx_status
->phymode
;
1637 bss
->freq
= rx_status
->freq
;
1638 if (channel
!= rx_status
->channel
&&
1639 (bss
->hw_mode
== MODE_IEEE80211G
||
1640 bss
->hw_mode
== MODE_IEEE80211B
) &&
1641 channel
>= 1 && channel
<= 14) {
1642 static const int freq_list
[] = {
1643 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1644 2447, 2452, 2457, 2462, 2467, 2472, 2484
1646 /* IEEE 802.11g/b mode can receive packets from neighboring
1647 * channels, so map the channel into frequency. */
1648 bss
->freq
= freq_list
[channel
- 1];
1650 bss
->timestamp
= timestamp
;
1651 bss
->last_update
= jiffies
;
1652 bss
->rssi
= rx_status
->ssi
;
1653 bss
->signal
= rx_status
->signal
;
1654 bss
->noise
= rx_status
->noise
;
1657 ieee80211_rx_bss_put(dev
, bss
);
1661 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
1662 struct ieee80211_mgmt
*mgmt
,
1664 struct ieee80211_rx_status
*rx_status
)
1666 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
1670 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
1671 struct ieee80211_mgmt
*mgmt
,
1673 struct ieee80211_rx_status
*rx_status
)
1675 struct ieee80211_sub_if_data
*sdata
;
1676 struct ieee80211_if_sta
*ifsta
;
1678 struct ieee802_11_elems elems
;
1680 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
1682 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1683 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
1685 ifsta
= &sdata
->u
.sta
;
1687 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
1688 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
1691 /* Process beacon from the current BSS */
1692 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
1696 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
1698 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
1699 ieee80211_handle_erp_ie(dev
, elems
.erp_info
[0]);
1701 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1702 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1703 elems
.wmm_param_len
);
1708 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
1709 struct ieee80211_if_sta
*ifsta
,
1710 struct ieee80211_mgmt
*mgmt
,
1712 struct ieee80211_rx_status
*rx_status
)
1714 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1715 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1717 struct sk_buff
*skb
;
1718 struct ieee80211_mgmt
*resp
;
1720 DECLARE_MAC_BUF(mac
);
1721 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1722 DECLARE_MAC_BUF(mac2
);
1723 DECLARE_MAC_BUF(mac3
);
1726 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
||
1727 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
1728 len
< 24 + 2 || !ifsta
->probe_resp
)
1731 if (local
->ops
->tx_last_beacon
)
1732 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
1736 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1737 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
1738 "%s (tx_last_beacon=%d)\n",
1739 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
1740 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
1741 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1743 if (!tx_last_beacon
)
1746 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
1747 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
1750 end
= ((u8
*) mgmt
) + len
;
1751 pos
= mgmt
->u
.probe_req
.variable
;
1752 if (pos
[0] != WLAN_EID_SSID
||
1753 pos
+ 2 + pos
[1] > end
) {
1754 if (net_ratelimit()) {
1755 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
1757 dev
->name
, print_mac(mac
, mgmt
->sa
));
1762 (pos
[1] != ifsta
->ssid_len
||
1763 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
1764 /* Ignore ProbeReq for foreign SSID */
1768 /* Reply with ProbeResp */
1769 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
1773 resp
= (struct ieee80211_mgmt
*) skb
->data
;
1774 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
1775 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1776 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
1777 dev
->name
, print_mac(mac
, resp
->da
));
1778 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1779 ieee80211_sta_tx(dev
, skb
, 0);
1783 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
1784 struct ieee80211_rx_status
*rx_status
)
1786 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1787 struct ieee80211_sub_if_data
*sdata
;
1788 struct ieee80211_if_sta
*ifsta
;
1789 struct ieee80211_mgmt
*mgmt
;
1795 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1796 ifsta
= &sdata
->u
.sta
;
1798 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1799 fc
= le16_to_cpu(mgmt
->frame_control
);
1801 switch (fc
& IEEE80211_FCTL_STYPE
) {
1802 case IEEE80211_STYPE_PROBE_REQ
:
1803 case IEEE80211_STYPE_PROBE_RESP
:
1804 case IEEE80211_STYPE_BEACON
:
1805 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
1806 case IEEE80211_STYPE_AUTH
:
1807 case IEEE80211_STYPE_ASSOC_RESP
:
1808 case IEEE80211_STYPE_REASSOC_RESP
:
1809 case IEEE80211_STYPE_DEAUTH
:
1810 case IEEE80211_STYPE_DISASSOC
:
1811 skb_queue_tail(&ifsta
->skb_queue
, skb
);
1812 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
1815 printk(KERN_DEBUG
"%s: received unknown management frame - "
1816 "stype=%d\n", dev
->name
,
1817 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
1826 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
1827 struct sk_buff
*skb
)
1829 struct ieee80211_rx_status
*rx_status
;
1830 struct ieee80211_sub_if_data
*sdata
;
1831 struct ieee80211_if_sta
*ifsta
;
1832 struct ieee80211_mgmt
*mgmt
;
1835 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1836 ifsta
= &sdata
->u
.sta
;
1838 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
1839 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1840 fc
= le16_to_cpu(mgmt
->frame_control
);
1842 switch (fc
& IEEE80211_FCTL_STYPE
) {
1843 case IEEE80211_STYPE_PROBE_REQ
:
1844 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
1847 case IEEE80211_STYPE_PROBE_RESP
:
1848 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
1850 case IEEE80211_STYPE_BEACON
:
1851 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
1853 case IEEE80211_STYPE_AUTH
:
1854 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
1856 case IEEE80211_STYPE_ASSOC_RESP
:
1857 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 0);
1859 case IEEE80211_STYPE_REASSOC_RESP
:
1860 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 1);
1862 case IEEE80211_STYPE_DEAUTH
:
1863 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
1865 case IEEE80211_STYPE_DISASSOC
:
1866 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
1874 void ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
1875 struct ieee80211_rx_status
*rx_status
)
1877 struct ieee80211_mgmt
*mgmt
;
1880 if (skb
->len
< 24) {
1885 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1886 fc
= le16_to_cpu(mgmt
->frame_control
);
1888 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
1889 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
1890 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
1891 skb
->len
, rx_status
);
1892 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
1893 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
1902 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
1904 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1906 struct sta_info
*sta
;
1908 read_lock_bh(&local
->sta_lock
);
1909 list_for_each_entry(sta
, &local
->sta_list
, list
) {
1910 if (sta
->dev
== dev
&&
1911 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
1917 read_unlock_bh(&local
->sta_lock
);
1923 static void ieee80211_sta_expire(struct net_device
*dev
)
1925 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1926 struct sta_info
*sta
, *tmp
;
1927 LIST_HEAD(tmp_list
);
1928 DECLARE_MAC_BUF(mac
);
1930 write_lock_bh(&local
->sta_lock
);
1931 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
1932 if (time_after(jiffies
, sta
->last_rx
+
1933 IEEE80211_IBSS_INACTIVITY_LIMIT
)) {
1934 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
1935 dev
->name
, print_mac(mac
, sta
->addr
));
1936 __sta_info_get(sta
);
1937 sta_info_remove(sta
);
1938 list_add(&sta
->list
, &tmp_list
);
1940 write_unlock_bh(&local
->sta_lock
);
1942 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
) {
1949 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
1950 struct ieee80211_if_sta
*ifsta
)
1952 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
1954 ieee80211_sta_expire(dev
);
1955 if (ieee80211_sta_active_ibss(dev
))
1958 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
1959 "IBSS networks with same SSID (merge)\n", dev
->name
);
1960 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
1964 void ieee80211_sta_timer(unsigned long data
)
1966 struct ieee80211_sub_if_data
*sdata
=
1967 (struct ieee80211_sub_if_data
*) data
;
1968 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1969 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
1971 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
1972 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
1976 void ieee80211_sta_work(struct work_struct
*work
)
1978 struct ieee80211_sub_if_data
*sdata
=
1979 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
1980 struct net_device
*dev
= sdata
->dev
;
1981 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1982 struct ieee80211_if_sta
*ifsta
;
1983 struct sk_buff
*skb
;
1985 if (!netif_running(dev
))
1988 if (local
->sta_scanning
)
1991 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
&&
1992 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
1993 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
1994 "(type=%d)\n", dev
->name
, sdata
->type
);
1997 ifsta
= &sdata
->u
.sta
;
1999 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
2000 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
2002 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
2003 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
2004 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
2005 if (ifsta
->scan_ssid_len
)
2006 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
2008 ieee80211_sta_start_scan(dev
, NULL
, 0);
2012 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
2013 if (ieee80211_sta_config_auth(dev
, ifsta
))
2015 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2016 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
2019 switch (ifsta
->state
) {
2020 case IEEE80211_DISABLED
:
2022 case IEEE80211_AUTHENTICATE
:
2023 ieee80211_authenticate(dev
, ifsta
);
2025 case IEEE80211_ASSOCIATE
:
2026 ieee80211_associate(dev
, ifsta
);
2028 case IEEE80211_ASSOCIATED
:
2029 ieee80211_associated(dev
, ifsta
);
2031 case IEEE80211_IBSS_SEARCH
:
2032 ieee80211_sta_find_ibss(dev
, ifsta
);
2034 case IEEE80211_IBSS_JOINED
:
2035 ieee80211_sta_merge_ibss(dev
, ifsta
);
2038 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
2043 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
2044 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
2045 "mixed-cell disabled - disassociate\n", dev
->name
);
2047 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
2048 ieee80211_set_disassoc(dev
, ifsta
, 0);
2053 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
2054 struct ieee80211_if_sta
*ifsta
)
2056 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2058 if (local
->ops
->reset_tsf
) {
2059 /* Reset own TSF to allow time synchronization work. */
2060 local
->ops
->reset_tsf(local_to_hw(local
));
2063 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
2066 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
2067 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2068 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
2069 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
2070 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
2071 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
2073 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2074 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
2076 ifsta
->auth_transaction
= -1;
2077 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
2078 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
2079 netif_carrier_off(dev
);
2083 void ieee80211_sta_req_auth(struct net_device
*dev
,
2084 struct ieee80211_if_sta
*ifsta
)
2086 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2087 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2089 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
2092 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
2093 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
2094 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
2095 IEEE80211_STA_AUTO_SSID_SEL
))) {
2096 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2097 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2101 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
2102 const char *ssid
, int ssid_len
)
2104 int tmp
, hidden_ssid
;
2106 if (ssid_len
== ifsta
->ssid_len
&&
2107 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
2110 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
2116 if (ssid
[tmp
] != '\0') {
2122 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
2125 if (ssid_len
== 1 && ssid
[0] == ' ')
2131 static int ieee80211_sta_config_auth(struct net_device
*dev
,
2132 struct ieee80211_if_sta
*ifsta
)
2134 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2135 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2136 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
2137 int top_rssi
= 0, freq
;
2139 if (!(ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
2140 IEEE80211_STA_AUTO_BSSID_SEL
| IEEE80211_STA_AUTO_CHANNEL_SEL
))) {
2141 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2142 ieee80211_sta_reset_auth(dev
, ifsta
);
2146 spin_lock_bh(&local
->sta_bss_lock
);
2147 freq
= local
->oper_channel
->freq
;
2148 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2149 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
2152 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
2153 !!sdata
->default_key
)
2156 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
2160 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
2161 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
2164 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
2165 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
2168 if (!selected
|| top_rssi
< bss
->rssi
) {
2170 top_rssi
= bss
->rssi
;
2174 atomic_inc(&selected
->users
);
2175 spin_unlock_bh(&local
->sta_bss_lock
);
2178 ieee80211_set_channel(local
, -1, selected
->freq
);
2179 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
2180 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
2181 selected
->ssid_len
);
2182 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
2183 ieee80211_rx_bss_put(dev
, selected
);
2184 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2185 ieee80211_sta_reset_auth(dev
, ifsta
);
2188 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
2189 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
2190 ieee80211_sta_start_scan(dev
, NULL
, 0);
2192 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
2194 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2195 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2197 ifsta
->state
= IEEE80211_DISABLED
;
2202 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2203 struct ieee80211_if_sta
*ifsta
,
2204 struct ieee80211_sta_bss
*bss
)
2206 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2207 int res
, rates
, i
, j
;
2208 struct sk_buff
*skb
;
2209 struct ieee80211_mgmt
*mgmt
;
2210 struct ieee80211_tx_control control
;
2211 struct ieee80211_rate
*rate
;
2212 struct ieee80211_hw_mode
*mode
;
2213 struct rate_control_extra extra
;
2215 struct ieee80211_sub_if_data
*sdata
;
2217 /* Remove possible STA entries from other IBSS networks. */
2218 sta_info_flush(local
, NULL
);
2220 if (local
->ops
->reset_tsf
) {
2221 /* Reset own TSF to allow time synchronization work. */
2222 local
->ops
->reset_tsf(local_to_hw(local
));
2224 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2225 res
= ieee80211_if_config(dev
);
2229 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2231 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2232 sdata
->drop_unencrypted
= bss
->capability
&
2233 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2235 res
= ieee80211_set_channel(local
, -1, bss
->freq
);
2237 if (!(local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)) {
2238 printk(KERN_DEBUG
"%s: IBSS not allowed on channel %d "
2239 "(%d MHz)\n", dev
->name
, local
->hw
.conf
.channel
,
2240 local
->hw
.conf
.freq
);
2244 /* Set beacon template based on scan results */
2245 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2250 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2252 mgmt
= (struct ieee80211_mgmt
*)
2253 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2254 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2255 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2256 IEEE80211_STYPE_BEACON
);
2257 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2258 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2259 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2260 mgmt
->u
.beacon
.beacon_int
=
2261 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2262 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2264 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2265 *pos
++ = WLAN_EID_SSID
;
2266 *pos
++ = ifsta
->ssid_len
;
2267 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2269 rates
= bss
->supp_rates_len
;
2272 pos
= skb_put(skb
, 2 + rates
);
2273 *pos
++ = WLAN_EID_SUPP_RATES
;
2275 memcpy(pos
, bss
->supp_rates
, rates
);
2277 pos
= skb_put(skb
, 2 + 1);
2278 *pos
++ = WLAN_EID_DS_PARAMS
;
2280 *pos
++ = bss
->channel
;
2282 pos
= skb_put(skb
, 2 + 2);
2283 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2285 /* FIX: set ATIM window based on scan results */
2289 if (bss
->supp_rates_len
> 8) {
2290 rates
= bss
->supp_rates_len
- 8;
2291 pos
= skb_put(skb
, 2 + rates
);
2292 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2294 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2297 memset(&control
, 0, sizeof(control
));
2298 memset(&extra
, 0, sizeof(extra
));
2299 extra
.mode
= local
->oper_hw_mode
;
2300 rate
= rate_control_get_rate(local
, dev
, skb
, &extra
);
2302 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2303 "for IBSS beacon\n", dev
->name
);
2307 ((sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
) &&
2308 (rate
->flags
& IEEE80211_RATE_PREAMBLE2
)) ?
2309 rate
->val2
: rate
->val
;
2310 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
2311 control
.power_level
= local
->hw
.conf
.power_level
;
2312 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
2313 control
.retry_limit
= 1;
2315 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
2316 if (ifsta
->probe_resp
) {
2317 mgmt
= (struct ieee80211_mgmt
*)
2318 ifsta
->probe_resp
->data
;
2319 mgmt
->frame_control
=
2320 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2321 IEEE80211_STYPE_PROBE_RESP
);
2323 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
2324 "template for IBSS\n", dev
->name
);
2327 if (local
->ops
->beacon_update
&&
2328 local
->ops
->beacon_update(local_to_hw(local
),
2329 skb
, &control
) == 0) {
2330 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
2331 "template based on scan results\n", dev
->name
);
2336 mode
= local
->oper_hw_mode
;
2337 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2338 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2339 for (j
= 0; j
< mode
->num_rates
; j
++)
2340 if (mode
->rates
[j
].rate
== bitrate
)
2343 ifsta
->supp_rates_bits
= rates
;
2347 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
2348 "template\n", dev
->name
);
2352 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2353 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2355 ieee80211_rx_bss_put(dev
, bss
);
2361 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
2362 struct ieee80211_if_sta
*ifsta
)
2364 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2365 struct ieee80211_sta_bss
*bss
;
2366 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2367 struct ieee80211_hw_mode
*mode
;
2368 u8 bssid
[ETH_ALEN
], *pos
;
2370 DECLARE_MAC_BUF(mac
);
2373 /* Easier testing, use fixed BSSID. */
2374 memset(bssid
, 0xfe, ETH_ALEN
);
2376 /* Generate random, not broadcast, locally administered BSSID. Mix in
2377 * own MAC address to make sure that devices that do not have proper
2378 * random number generator get different BSSID. */
2379 get_random_bytes(bssid
, ETH_ALEN
);
2380 for (i
= 0; i
< ETH_ALEN
; i
++)
2381 bssid
[i
] ^= dev
->dev_addr
[i
];
2386 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
2387 dev
->name
, print_mac(mac
, bssid
));
2389 bss
= ieee80211_rx_bss_add(dev
, bssid
, local
->hw
.conf
.channel
,
2390 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
2394 mode
= local
->oper_hw_mode
;
2396 if (local
->hw
.conf
.beacon_int
== 0)
2397 local
->hw
.conf
.beacon_int
= 100;
2398 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
2399 bss
->hw_mode
= local
->hw
.conf
.phymode
;
2400 bss
->freq
= local
->hw
.conf
.freq
;
2401 bss
->last_update
= jiffies
;
2402 bss
->capability
= WLAN_CAPABILITY_IBSS
;
2403 if (sdata
->default_key
) {
2404 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
2406 sdata
->drop_unencrypted
= 0;
2407 bss
->supp_rates_len
= mode
->num_rates
;
2408 pos
= bss
->supp_rates
;
2409 for (i
= 0; i
< mode
->num_rates
; i
++) {
2410 int rate
= mode
->rates
[i
].rate
;
2411 *pos
++ = (u8
) (rate
/ 5);
2414 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2418 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
2419 struct ieee80211_if_sta
*ifsta
)
2421 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2422 struct ieee80211_sta_bss
*bss
;
2426 DECLARE_MAC_BUF(mac
);
2427 DECLARE_MAC_BUF(mac2
);
2429 if (ifsta
->ssid_len
== 0)
2432 active_ibss
= ieee80211_sta_active_ibss(dev
);
2433 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2434 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
2435 dev
->name
, active_ibss
);
2436 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2437 spin_lock_bh(&local
->sta_bss_lock
);
2438 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2439 if (ifsta
->ssid_len
!= bss
->ssid_len
||
2440 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
2441 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
2443 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2444 printk(KERN_DEBUG
" bssid=%s found\n",
2445 print_mac(mac
, bss
->bssid
));
2446 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2447 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
2449 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
2452 spin_unlock_bh(&local
->sta_bss_lock
);
2454 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2455 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
2456 "%s\n", print_mac(mac
, bssid
), print_mac(mac2
, ifsta
->bssid
));
2457 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2458 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
2459 (bss
= ieee80211_rx_bss_get(dev
, bssid
, local
->hw
.conf
.channel
,
2460 ifsta
->ssid
, ifsta
->ssid_len
))) {
2461 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
2462 " based on configured SSID\n",
2463 dev
->name
, print_mac(mac
, bssid
));
2464 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2466 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2467 printk(KERN_DEBUG
" did not try to join ibss\n");
2468 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2470 /* Selected IBSS not found in current scan results - try to scan */
2471 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
2472 !ieee80211_sta_active_ibss(dev
)) {
2473 mod_timer(&ifsta
->timer
, jiffies
+
2474 IEEE80211_IBSS_MERGE_INTERVAL
);
2475 } else if (time_after(jiffies
, local
->last_scan_completed
+
2476 IEEE80211_SCAN_INTERVAL
)) {
2477 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
2478 "join\n", dev
->name
);
2479 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
2481 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
2482 int interval
= IEEE80211_SCAN_INTERVAL
;
2484 if (time_after(jiffies
, ifsta
->ibss_join_req
+
2485 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
2486 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
2487 local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)
2488 return ieee80211_sta_create_ibss(dev
, ifsta
);
2489 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
2490 printk(KERN_DEBUG
"%s: IBSS not allowed on the"
2491 " configured channel %d (%d MHz)\n",
2492 dev
->name
, local
->hw
.conf
.channel
,
2493 local
->hw
.conf
.freq
);
2496 /* No IBSS found - decrease scan interval and continue
2498 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
2501 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
2502 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
2510 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
2512 struct ieee80211_sub_if_data
*sdata
;
2513 struct ieee80211_if_sta
*ifsta
;
2514 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2516 if (len
> IEEE80211_MAX_SSID_LEN
)
2519 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
2521 if (local
->ops
->conf_tx
) {
2522 struct ieee80211_tx_queue_params qparam
;
2525 memset(&qparam
, 0, sizeof(qparam
));
2526 /* TODO: are these ok defaults for all hw_modes? */
2529 local
->hw
.conf
.phymode
== MODE_IEEE80211B
? 31 : 15;
2530 qparam
.cw_max
= 1023;
2531 qparam
.burst_time
= 0;
2532 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
2534 local
->ops
->conf_tx(local_to_hw(local
),
2535 i
+ IEEE80211_TX_QUEUE_DATA0
,
2538 /* IBSS uses different parameters for Beacon sending */
2542 local
->ops
->conf_tx(local_to_hw(local
),
2543 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
2546 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2547 ifsta
= &sdata
->u
.sta
;
2549 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
2550 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
2551 memcpy(ifsta
->ssid
, ssid
, len
);
2552 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
2553 ifsta
->ssid_len
= len
;
2556 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
2558 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
2559 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&&
2560 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
2561 ifsta
->ibss_join_req
= jiffies
;
2562 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
2563 return ieee80211_sta_find_ibss(dev
, ifsta
);
2569 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
2571 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2572 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2573 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
2574 *len
= ifsta
->ssid_len
;
2579 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
2581 struct ieee80211_sub_if_data
*sdata
;
2582 struct ieee80211_if_sta
*ifsta
;
2585 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2586 ifsta
= &sdata
->u
.sta
;
2588 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
2589 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
2590 res
= ieee80211_if_config(dev
);
2592 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
2593 "the low-level driver\n", dev
->name
);
2598 if (is_valid_ether_addr(bssid
))
2599 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
2601 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
2607 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
2608 struct ieee80211_sub_if_data
*sdata
,
2611 struct sk_buff
*skb
;
2612 struct ieee80211_hdr
*nullfunc
;
2615 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
2617 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
2618 "frame\n", sdata
->dev
->name
);
2621 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2623 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
2624 memset(nullfunc
, 0, 24);
2625 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
2626 IEEE80211_FCTL_TODS
;
2628 fc
|= IEEE80211_FCTL_PM
;
2629 nullfunc
->frame_control
= cpu_to_le16(fc
);
2630 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
2631 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
2632 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
2634 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
2638 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
2640 struct ieee80211_local
*local
= hw_to_local(hw
);
2641 struct net_device
*dev
= local
->scan_dev
;
2642 struct ieee80211_sub_if_data
*sdata
;
2643 union iwreq_data wrqu
;
2645 local
->last_scan_completed
= jiffies
;
2647 local
->sta_scanning
= 0;
2649 if (ieee80211_hw_config(local
))
2650 printk(KERN_DEBUG
"%s: failed to restore operational "
2651 "channel after scan\n", dev
->name
);
2654 netif_tx_lock_bh(local
->mdev
);
2655 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
2656 local
->ops
->configure_filter(local_to_hw(local
),
2657 FIF_BCN_PRBRESP_PROMISC
,
2658 &local
->filter_flags
,
2659 local
->mdev
->mc_count
,
2660 local
->mdev
->mc_list
);
2662 netif_tx_unlock_bh(local
->mdev
);
2664 memset(&wrqu
, 0, sizeof(wrqu
));
2665 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
2668 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
2670 /* No need to wake the master device. */
2671 if (sdata
->dev
== local
->mdev
)
2674 if (sdata
->type
== IEEE80211_IF_TYPE_STA
) {
2675 if (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
2676 ieee80211_send_nullfunc(local
, sdata
, 0);
2677 ieee80211_sta_timer((unsigned long)sdata
);
2680 netif_wake_queue(sdata
->dev
);
2684 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2685 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
2686 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2687 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
2688 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
2689 !ieee80211_sta_active_ibss(dev
)))
2690 ieee80211_sta_find_ibss(dev
, ifsta
);
2693 EXPORT_SYMBOL(ieee80211_scan_completed
);
2695 void ieee80211_sta_scan_work(struct work_struct
*work
)
2697 struct ieee80211_local
*local
=
2698 container_of(work
, struct ieee80211_local
, scan_work
.work
);
2699 struct net_device
*dev
= local
->scan_dev
;
2700 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2701 struct ieee80211_hw_mode
*mode
;
2702 struct ieee80211_channel
*chan
;
2704 unsigned long next_delay
= 0;
2706 if (!local
->sta_scanning
)
2709 switch (local
->scan_state
) {
2710 case SCAN_SET_CHANNEL
:
2711 mode
= local
->scan_hw_mode
;
2712 if (local
->scan_hw_mode
->list
.next
== &local
->modes_list
&&
2713 local
->scan_channel_idx
>= mode
->num_channels
) {
2714 ieee80211_scan_completed(local_to_hw(local
));
2717 skip
= !(local
->enabled_modes
& (1 << mode
->mode
));
2718 chan
= &mode
->channels
[local
->scan_channel_idx
];
2719 if (!(chan
->flag
& IEEE80211_CHAN_W_SCAN
) ||
2720 (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&&
2721 !(chan
->flag
& IEEE80211_CHAN_W_IBSS
)) ||
2722 (local
->hw_modes
& local
->enabled_modes
&
2723 (1 << MODE_IEEE80211G
) && mode
->mode
== MODE_IEEE80211B
))
2728 printk(KERN_DEBUG
"%s: scan channel %d (%d MHz)\n",
2729 dev
->name
, chan
->chan
, chan
->freq
);
2732 local
->scan_channel
= chan
;
2733 if (ieee80211_hw_config(local
)) {
2734 printk(KERN_DEBUG
"%s: failed to set channel "
2735 "%d (%d MHz) for scan\n", dev
->name
,
2736 chan
->chan
, chan
->freq
);
2741 local
->scan_channel_idx
++;
2742 if (local
->scan_channel_idx
>= local
->scan_hw_mode
->num_channels
) {
2743 if (local
->scan_hw_mode
->list
.next
!= &local
->modes_list
) {
2744 local
->scan_hw_mode
= list_entry(local
->scan_hw_mode
->list
.next
,
2745 struct ieee80211_hw_mode
,
2747 local
->scan_channel_idx
= 0;
2754 next_delay
= IEEE80211_PROBE_DELAY
+
2755 usecs_to_jiffies(local
->hw
.channel_change_time
);
2756 local
->scan_state
= SCAN_SEND_PROBE
;
2758 case SCAN_SEND_PROBE
:
2759 if (local
->scan_channel
->flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
) {
2760 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
2761 local
->scan_ssid_len
);
2762 next_delay
= IEEE80211_CHANNEL_TIME
;
2764 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
2765 local
->scan_state
= SCAN_SET_CHANNEL
;
2769 if (local
->sta_scanning
)
2770 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
2775 static int ieee80211_sta_start_scan(struct net_device
*dev
,
2776 u8
*ssid
, size_t ssid_len
)
2778 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2779 struct ieee80211_sub_if_data
*sdata
;
2781 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
2784 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
2785 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
2788 * ScanType: ACTIVE, PASSIVE
2789 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
2790 * a Probe frame during active scanning
2792 * MinChannelTime (>= ProbeDelay), in TU
2793 * MaxChannelTime: (>= MinChannelTime), in TU
2796 /* MLME-SCAN.confirm
2798 * ResultCode: SUCCESS, INVALID_PARAMETERS
2801 if (local
->sta_scanning
) {
2802 if (local
->scan_dev
== dev
)
2807 if (local
->ops
->hw_scan
) {
2808 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
2811 local
->sta_scanning
= 1;
2812 local
->scan_dev
= dev
;
2817 local
->sta_scanning
= 1;
2820 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
2822 /* Don't stop the master interface, otherwise we can't transmit
2824 if (sdata
->dev
== local
->mdev
)
2827 netif_stop_queue(sdata
->dev
);
2828 if (sdata
->type
== IEEE80211_IF_TYPE_STA
&&
2829 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
2830 ieee80211_send_nullfunc(local
, sdata
, 1);
2835 local
->scan_ssid_len
= ssid_len
;
2836 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
2838 local
->scan_ssid_len
= 0;
2839 local
->scan_state
= SCAN_SET_CHANNEL
;
2840 local
->scan_hw_mode
= list_entry(local
->modes_list
.next
,
2841 struct ieee80211_hw_mode
,
2843 local
->scan_channel_idx
= 0;
2844 local
->scan_dev
= dev
;
2846 netif_tx_lock_bh(local
->mdev
);
2847 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
2848 local
->ops
->configure_filter(local_to_hw(local
),
2849 FIF_BCN_PRBRESP_PROMISC
,
2850 &local
->filter_flags
,
2851 local
->mdev
->mc_count
,
2852 local
->mdev
->mc_list
);
2853 netif_tx_unlock_bh(local
->mdev
);
2855 /* TODO: start scan as soon as all nullfunc frames are ACKed */
2856 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
2857 IEEE80211_CHANNEL_TIME
);
2863 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
2865 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2866 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2867 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2869 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
2870 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
2872 if (local
->sta_scanning
) {
2873 if (local
->scan_dev
== dev
)
2878 ifsta
->scan_ssid_len
= ssid_len
;
2880 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
2881 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
2882 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2887 ieee80211_sta_scan_result(struct net_device
*dev
,
2888 struct ieee80211_sta_bss
*bss
,
2889 char *current_ev
, char *end_buf
)
2891 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2892 struct iw_event iwe
;
2894 if (time_after(jiffies
,
2895 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
2898 if (!(local
->enabled_modes
& (1 << bss
->hw_mode
)))
2901 if (local
->scan_flags
& IEEE80211_SCAN_WPA_ONLY
&&
2902 !bss
->wpa_ie
&& !bss
->rsn_ie
)
2905 if (local
->scan_flags
& IEEE80211_SCAN_MATCH_SSID
&&
2906 (local
->scan_ssid_len
!= bss
->ssid_len
||
2907 memcmp(local
->scan_ssid
, bss
->ssid
, bss
->ssid_len
) != 0))
2910 memset(&iwe
, 0, sizeof(iwe
));
2911 iwe
.cmd
= SIOCGIWAP
;
2912 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
2913 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
2914 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2917 memset(&iwe
, 0, sizeof(iwe
));
2918 iwe
.cmd
= SIOCGIWESSID
;
2919 iwe
.u
.data
.length
= bss
->ssid_len
;
2920 iwe
.u
.data
.flags
= 1;
2921 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
2924 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)) {
2925 memset(&iwe
, 0, sizeof(iwe
));
2926 iwe
.cmd
= SIOCGIWMODE
;
2927 if (bss
->capability
& WLAN_CAPABILITY_ESS
)
2928 iwe
.u
.mode
= IW_MODE_MASTER
;
2930 iwe
.u
.mode
= IW_MODE_ADHOC
;
2931 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2935 memset(&iwe
, 0, sizeof(iwe
));
2936 iwe
.cmd
= SIOCGIWFREQ
;
2937 iwe
.u
.freq
.m
= bss
->channel
;
2939 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2941 iwe
.u
.freq
.m
= bss
->freq
* 100000;
2943 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2946 memset(&iwe
, 0, sizeof(iwe
));
2948 iwe
.u
.qual
.qual
= bss
->signal
;
2949 iwe
.u
.qual
.level
= bss
->rssi
;
2950 iwe
.u
.qual
.noise
= bss
->noise
;
2951 iwe
.u
.qual
.updated
= local
->wstats_flags
;
2952 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2955 memset(&iwe
, 0, sizeof(iwe
));
2956 iwe
.cmd
= SIOCGIWENCODE
;
2957 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
2958 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
2960 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
2961 iwe
.u
.data
.length
= 0;
2962 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
2964 if (bss
&& bss
->wpa_ie
) {
2965 memset(&iwe
, 0, sizeof(iwe
));
2966 iwe
.cmd
= IWEVGENIE
;
2967 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
2968 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
2972 if (bss
&& bss
->rsn_ie
) {
2973 memset(&iwe
, 0, sizeof(iwe
));
2974 iwe
.cmd
= IWEVGENIE
;
2975 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
2976 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
2980 if (bss
&& bss
->supp_rates_len
> 0) {
2981 /* display all supported rates in readable format */
2982 char *p
= current_ev
+ IW_EV_LCP_LEN
;
2985 memset(&iwe
, 0, sizeof(iwe
));
2986 iwe
.cmd
= SIOCGIWRATE
;
2987 /* Those two flags are ignored... */
2988 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
2990 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2991 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
2993 p
= iwe_stream_add_value(current_ev
, p
,
2994 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
3001 buf
= kmalloc(30, GFP_ATOMIC
);
3003 memset(&iwe
, 0, sizeof(iwe
));
3004 iwe
.cmd
= IWEVCUSTOM
;
3005 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
3006 iwe
.u
.data
.length
= strlen(buf
);
3007 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
3016 if (!(local
->scan_flags
& IEEE80211_SCAN_EXTRA_INFO
))
3019 buf
= kmalloc(100, GFP_ATOMIC
);
3023 memset(&iwe
, 0, sizeof(iwe
));
3024 iwe
.cmd
= IWEVCUSTOM
;
3025 sprintf(buf
, "bcn_int=%d", bss
->beacon_int
);
3026 iwe
.u
.data
.length
= strlen(buf
);
3027 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3030 memset(&iwe
, 0, sizeof(iwe
));
3031 iwe
.cmd
= IWEVCUSTOM
;
3032 sprintf(buf
, "capab=0x%04x", bss
->capability
);
3033 iwe
.u
.data
.length
= strlen(buf
);
3034 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3045 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
3047 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3048 char *current_ev
= buf
;
3049 char *end_buf
= buf
+ len
;
3050 struct ieee80211_sta_bss
*bss
;
3052 spin_lock_bh(&local
->sta_bss_lock
);
3053 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3054 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
3055 spin_unlock_bh(&local
->sta_bss_lock
);
3058 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
3061 spin_unlock_bh(&local
->sta_bss_lock
);
3062 return current_ev
- buf
;
3066 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
3068 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3069 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3070 kfree(ifsta
->extra_ie
);
3072 ifsta
->extra_ie
= NULL
;
3073 ifsta
->extra_ie_len
= 0;
3076 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
3077 if (!ifsta
->extra_ie
) {
3078 ifsta
->extra_ie_len
= 0;
3081 memcpy(ifsta
->extra_ie
, ie
, len
);
3082 ifsta
->extra_ie_len
= len
;
3087 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
3088 struct sk_buff
*skb
, u8
*bssid
,
3091 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3092 struct sta_info
*sta
;
3093 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3094 DECLARE_MAC_BUF(mac
);
3096 /* TODO: Could consider removing the least recently used entry and
3097 * allow new one to be added. */
3098 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
3099 if (net_ratelimit()) {
3100 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
3101 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
3106 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
3107 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
3109 sta
= sta_info_add(local
, dev
, addr
, GFP_ATOMIC
);
3113 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
3115 rate_control_rate_init(sta
, local
);
3117 return sta
; /* caller will call sta_info_put() */
3121 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
3123 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3124 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3126 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
3129 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
&&
3130 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
)
3133 ieee80211_send_deauth(dev
, ifsta
, reason
);
3134 ieee80211_set_disassoc(dev
, ifsta
, 1);
3139 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
3141 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3142 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3144 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
3147 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
3150 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
3153 ieee80211_send_disassoc(dev
, ifsta
, reason
);
3154 ieee80211_set_disassoc(dev
, ifsta
, 0);