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 * BSS table: use <BSSID,SSID> as the key to support multi-SSID APs
16 * order BSS list by RSSI(?) ("quality of AP")
17 * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
20 #include <linux/delay.h>
21 #include <linux/if_ether.h>
22 #include <linux/skbuff.h>
23 #include <linux/netdevice.h>
24 #include <linux/if_arp.h>
25 #include <linux/wireless.h>
26 #include <linux/random.h>
27 #include <linux/etherdevice.h>
28 #include <net/iw_handler.h>
29 #include <asm/types.h>
31 #include <net/mac80211.h>
32 #include "ieee80211_i.h"
33 #include "ieee80211_rate.h"
34 #include "hostapd_ioctl.h"
36 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
37 #define IEEE80211_AUTH_MAX_TRIES 3
38 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
39 #define IEEE80211_ASSOC_MAX_TRIES 3
40 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
41 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
42 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
43 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
44 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
45 #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
47 #define IEEE80211_PROBE_DELAY (HZ / 33)
48 #define IEEE80211_CHANNEL_TIME (HZ / 33)
49 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
50 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
51 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
52 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
54 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
57 #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
59 #define ERP_INFO_USE_PROTECTION BIT(1)
61 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
62 u8
*ssid
, size_t ssid_len
);
63 static struct ieee80211_sta_bss
*
64 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
);
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 typedef enum { ParseOK
= 0, ParseUnknown
= 1, ParseFailed
= -1 } ParseRes
;
114 static ParseRes
ieee802_11_parse_elems(u8
*start
, size_t len
,
115 struct ieee802_11_elems
*elems
)
121 memset(elems
, 0, sizeof(*elems
));
133 printk(KERN_DEBUG
"IEEE 802.11 element parse "
134 "failed (id=%d elen=%d left=%d)\n",
143 elems
->ssid_len
= elen
;
145 case WLAN_EID_SUPP_RATES
:
146 elems
->supp_rates
= pos
;
147 elems
->supp_rates_len
= elen
;
149 case WLAN_EID_FH_PARAMS
:
150 elems
->fh_params
= pos
;
151 elems
->fh_params_len
= elen
;
153 case WLAN_EID_DS_PARAMS
:
154 elems
->ds_params
= pos
;
155 elems
->ds_params_len
= elen
;
157 case WLAN_EID_CF_PARAMS
:
158 elems
->cf_params
= pos
;
159 elems
->cf_params_len
= elen
;
163 elems
->tim_len
= elen
;
165 case WLAN_EID_IBSS_PARAMS
:
166 elems
->ibss_params
= pos
;
167 elems
->ibss_params_len
= elen
;
169 case WLAN_EID_CHALLENGE
:
170 elems
->challenge
= pos
;
171 elems
->challenge_len
= elen
;
174 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
176 /* Microsoft OUI (00:50:F2) */
178 /* OUI Type 1 - WPA IE */
180 elems
->wpa_len
= elen
;
181 } else if (elen
>= 5 && pos
[3] == 2) {
183 elems
->wmm_info
= pos
;
184 elems
->wmm_info_len
= elen
;
185 } else if (pos
[4] == 1) {
186 elems
->wmm_param
= pos
;
187 elems
->wmm_param_len
= elen
;
194 elems
->rsn_len
= elen
;
196 case WLAN_EID_ERP_INFO
:
197 elems
->erp_info
= pos
;
198 elems
->erp_info_len
= elen
;
200 case WLAN_EID_EXT_SUPP_RATES
:
201 elems
->ext_supp_rates
= pos
;
202 elems
->ext_supp_rates_len
= elen
;
206 printk(KERN_DEBUG
"IEEE 802.11 element parse ignored "
207 "unknown element (id=%d elen=%d)\n",
218 /* Do not trigger error if left == 1 as Apple Airport base stations
219 * send AssocResps that are one spurious byte too long. */
221 return unknown
? ParseUnknown
: ParseOK
;
227 static int ecw2cw(int ecw
)
237 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
238 struct ieee80211_if_sta
*ifsta
,
239 u8
*wmm_param
, size_t wmm_param_len
)
241 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
242 struct ieee80211_tx_queue_params params
;
247 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
249 count
= wmm_param
[6] & 0x0f;
250 if (count
== ifsta
->wmm_last_param_set
)
252 ifsta
->wmm_last_param_set
= count
;
255 left
= wmm_param_len
- 8;
257 memset(¶ms
, 0, sizeof(params
));
259 if (!local
->ops
->conf_tx
)
263 for (; left
>= 4; left
-= 4, pos
+= 4) {
264 int aci
= (pos
[0] >> 5) & 0x03;
265 int acm
= (pos
[0] >> 4) & 0x01;
270 queue
= IEEE80211_TX_QUEUE_DATA3
;
272 local
->wmm_acm
|= BIT(0) | BIT(3);
276 queue
= IEEE80211_TX_QUEUE_DATA1
;
278 local
->wmm_acm
|= BIT(4) | BIT(5);
282 queue
= IEEE80211_TX_QUEUE_DATA0
;
284 local
->wmm_acm
|= BIT(6) | BIT(7);
289 queue
= IEEE80211_TX_QUEUE_DATA2
;
291 local
->wmm_acm
|= BIT(1) | BIT(2);
296 params
.aifs
= pos
[0] & 0x0f;
297 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
298 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
299 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
300 params
.burst_time
= (pos
[2] | (pos
[3] << 8)) * 32 / 100;
301 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
302 "cWmin=%d cWmax=%d burst=%d\n",
303 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
304 params
.cw_max
, params
.burst_time
);
305 /* TODO: handle ACM (block TX, fallback to next lowest allowed
307 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
308 printk(KERN_DEBUG
"%s: failed to set TX queue "
309 "parameters for queue %d\n", dev
->name
, queue
);
315 static void ieee80211_handle_erp_ie(struct net_device
*dev
, u8 erp_value
)
317 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
318 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
319 int use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
320 int preamble_mode
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) != 0;
322 DECLARE_MAC_BUF(mac
);
324 if (use_protection
!= !!(sdata
->flags
& IEEE80211_SDATA_USE_PROTECTION
)) {
325 if (net_ratelimit()) {
326 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
329 use_protection
? "enabled" : "disabled",
330 print_mac(mac
, ifsta
->bssid
));
333 sdata
->flags
|= IEEE80211_SDATA_USE_PROTECTION
;
335 sdata
->flags
&= ~IEEE80211_SDATA_USE_PROTECTION
;
336 changes
|= IEEE80211_ERP_CHANGE_PROTECTION
;
339 if (preamble_mode
!= !(sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
)) {
340 if (net_ratelimit()) {
341 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
344 (preamble_mode
== WLAN_ERP_PREAMBLE_SHORT
) ?
346 print_mac(mac
, ifsta
->bssid
));
349 sdata
->flags
&= ~IEEE80211_SDATA_SHORT_PREAMBLE
;
351 sdata
->flags
|= IEEE80211_SDATA_SHORT_PREAMBLE
;
352 changes
|= IEEE80211_ERP_CHANGE_PREAMBLE
;
356 ieee80211_erp_info_change_notify(dev
, changes
);
360 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
361 struct ieee80211_if_sta
*ifsta
)
366 union iwreq_data wrqu
;
368 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
371 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
372 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
376 len
= sprintf(buf
, "ASSOCINFO(");
377 if (ifsta
->assocreq_ies
) {
378 len
+= sprintf(buf
+ len
, "ReqIEs=");
379 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
380 len
+= sprintf(buf
+ len
, "%02x",
381 ifsta
->assocreq_ies
[i
]);
384 if (ifsta
->assocresp_ies
) {
385 if (ifsta
->assocreq_ies
)
386 len
+= sprintf(buf
+ len
, " ");
387 len
+= sprintf(buf
+ len
, "RespIEs=");
388 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
389 len
+= sprintf(buf
+ len
, "%02x",
390 ifsta
->assocresp_ies
[i
]);
393 len
+= sprintf(buf
+ len
, ")");
395 if (len
> IW_CUSTOM_MAX
) {
396 len
= sprintf(buf
, "ASSOCRESPIE=");
397 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
398 len
+= sprintf(buf
+ len
, "%02x",
399 ifsta
->assocresp_ies
[i
]);
403 memset(&wrqu
, 0, sizeof(wrqu
));
404 wrqu
.data
.length
= len
;
405 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
411 static void ieee80211_set_associated(struct net_device
*dev
,
412 struct ieee80211_if_sta
*ifsta
,
415 union iwreq_data wrqu
;
417 if (!!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) == assoc
)
421 struct ieee80211_sub_if_data
*sdata
;
422 struct ieee80211_sta_bss
*bss
;
424 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
426 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
427 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
430 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
432 if (bss
->has_erp_value
)
433 ieee80211_handle_erp_ie(dev
, bss
->erp_value
);
434 ieee80211_rx_bss_put(dev
, bss
);
437 netif_carrier_on(dev
);
438 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
439 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
440 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
441 ieee80211_sta_send_associnfo(dev
, ifsta
);
443 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
445 netif_carrier_off(dev
);
446 ieee80211_reset_erp_info(dev
);
447 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
449 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
450 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
451 ifsta
->last_probe
= jiffies
;
454 static void ieee80211_set_disassoc(struct net_device
*dev
,
455 struct ieee80211_if_sta
*ifsta
, int deauth
)
458 ifsta
->auth_tries
= 0;
459 ifsta
->assoc_tries
= 0;
460 ieee80211_set_associated(dev
, ifsta
, 0);
463 static void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
466 struct ieee80211_sub_if_data
*sdata
;
467 struct ieee80211_tx_packet_data
*pkt_data
;
469 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
470 skb
->dev
= sdata
->local
->mdev
;
471 skb_set_mac_header(skb
, 0);
472 skb_set_network_header(skb
, 0);
473 skb_set_transport_header(skb
, 0);
475 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
476 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
477 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
478 if (sdata
->type
== IEEE80211_IF_TYPE_MGMT
)
479 pkt_data
->flags
|= IEEE80211_TXPD_MGMT_IFACE
;
481 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
487 static void ieee80211_send_auth(struct net_device
*dev
,
488 struct ieee80211_if_sta
*ifsta
,
489 int transaction
, u8
*extra
, size_t extra_len
,
492 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
494 struct ieee80211_mgmt
*mgmt
;
496 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
497 sizeof(*mgmt
) + 6 + extra_len
);
499 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
500 "frame\n", dev
->name
);
503 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
505 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
506 memset(mgmt
, 0, 24 + 6);
507 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
508 IEEE80211_STYPE_AUTH
);
510 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
511 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
512 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
513 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
514 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
515 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
516 ifsta
->auth_transaction
= transaction
+ 1;
517 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
519 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
521 ieee80211_sta_tx(dev
, skb
, encrypt
);
525 static void ieee80211_authenticate(struct net_device
*dev
,
526 struct ieee80211_if_sta
*ifsta
)
528 DECLARE_MAC_BUF(mac
);
531 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
532 printk(KERN_DEBUG
"%s: authentication with AP %s"
534 dev
->name
, print_mac(mac
, ifsta
->bssid
));
535 ifsta
->state
= IEEE80211_DISABLED
;
539 ifsta
->state
= IEEE80211_AUTHENTICATE
;
540 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
541 dev
->name
, print_mac(mac
, ifsta
->bssid
));
543 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
545 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
549 static void ieee80211_send_assoc(struct net_device
*dev
,
550 struct ieee80211_if_sta
*ifsta
)
552 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
553 struct ieee80211_hw_mode
*mode
;
555 struct ieee80211_mgmt
*mgmt
;
559 struct ieee80211_sta_bss
*bss
;
562 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
563 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
566 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
567 "frame\n", dev
->name
);
570 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
572 mode
= local
->oper_hw_mode
;
573 capab
= ifsta
->capab
;
574 if (mode
->mode
== MODE_IEEE80211G
) {
575 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
|
576 WLAN_CAPABILITY_SHORT_PREAMBLE
;
578 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
580 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
581 capab
|= WLAN_CAPABILITY_PRIVACY
;
585 ieee80211_rx_bss_put(dev
, bss
);
588 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
590 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
591 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
592 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
594 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
596 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
597 IEEE80211_STYPE_REASSOC_REQ
);
598 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
599 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
600 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
604 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
605 IEEE80211_STYPE_ASSOC_REQ
);
606 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
607 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
611 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
612 *pos
++ = WLAN_EID_SSID
;
613 *pos
++ = ifsta
->ssid_len
;
614 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
616 len
= mode
->num_rates
;
619 pos
= skb_put(skb
, len
+ 2);
620 *pos
++ = WLAN_EID_SUPP_RATES
;
622 for (i
= 0; i
< len
; i
++) {
623 int rate
= mode
->rates
[i
].rate
;
624 *pos
++ = (u8
) (rate
/ 5);
627 if (mode
->num_rates
> len
) {
628 pos
= skb_put(skb
, mode
->num_rates
- len
+ 2);
629 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
630 *pos
++ = mode
->num_rates
- len
;
631 for (i
= len
; i
< mode
->num_rates
; i
++) {
632 int rate
= mode
->rates
[i
].rate
;
633 *pos
++ = (u8
) (rate
/ 5);
637 if (ifsta
->extra_ie
) {
638 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
639 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
642 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
643 pos
= skb_put(skb
, 9);
644 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
645 *pos
++ = 7; /* len */
646 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
649 *pos
++ = 2; /* WME */
650 *pos
++ = 0; /* WME info */
651 *pos
++ = 1; /* WME ver */
655 kfree(ifsta
->assocreq_ies
);
656 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
657 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
658 if (ifsta
->assocreq_ies
)
659 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
661 ieee80211_sta_tx(dev
, skb
, 0);
665 static void ieee80211_send_deauth(struct net_device
*dev
,
666 struct ieee80211_if_sta
*ifsta
, u16 reason
)
668 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
670 struct ieee80211_mgmt
*mgmt
;
672 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
674 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
675 "frame\n", dev
->name
);
678 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
680 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
682 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
683 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
684 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
685 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
686 IEEE80211_STYPE_DEAUTH
);
688 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
690 ieee80211_sta_tx(dev
, skb
, 0);
694 static void ieee80211_send_disassoc(struct net_device
*dev
,
695 struct ieee80211_if_sta
*ifsta
, u16 reason
)
697 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
699 struct ieee80211_mgmt
*mgmt
;
701 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
703 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
704 "frame\n", dev
->name
);
707 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
709 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
711 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
712 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
713 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
714 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
715 IEEE80211_STYPE_DISASSOC
);
717 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
719 ieee80211_sta_tx(dev
, skb
, 0);
723 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
724 struct ieee80211_if_sta
*ifsta
)
726 struct ieee80211_sta_bss
*bss
;
729 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
) ||
730 ifsta
->key_management_enabled
)
733 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
737 if (ieee80211_sta_wep_configured(dev
) !=
738 !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
))
741 ieee80211_rx_bss_put(dev
, bss
);
747 static void ieee80211_associate(struct net_device
*dev
,
748 struct ieee80211_if_sta
*ifsta
)
750 DECLARE_MAC_BUF(mac
);
752 ifsta
->assoc_tries
++;
753 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
754 printk(KERN_DEBUG
"%s: association with AP %s"
756 dev
->name
, print_mac(mac
, ifsta
->bssid
));
757 ifsta
->state
= IEEE80211_DISABLED
;
761 ifsta
->state
= IEEE80211_ASSOCIATE
;
762 printk(KERN_DEBUG
"%s: associate with AP %s\n",
763 dev
->name
, print_mac(mac
, ifsta
->bssid
));
764 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
765 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
766 "mixed-cell disabled - abort association\n", dev
->name
);
767 ifsta
->state
= IEEE80211_DISABLED
;
771 ieee80211_send_assoc(dev
, ifsta
);
773 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
777 static void ieee80211_associated(struct net_device
*dev
,
778 struct ieee80211_if_sta
*ifsta
)
780 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
781 struct sta_info
*sta
;
783 DECLARE_MAC_BUF(mac
);
785 /* TODO: start monitoring current AP signal quality and number of
786 * missed beacons. Scan other channels every now and then and search
788 /* TODO: remove expired BSSes */
790 ifsta
->state
= IEEE80211_ASSOCIATED
;
792 sta
= sta_info_get(local
, ifsta
->bssid
);
794 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
795 dev
->name
, print_mac(mac
, ifsta
->bssid
));
799 if (time_after(jiffies
,
800 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
801 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
802 printk(KERN_DEBUG
"%s: No ProbeResp from "
803 "current AP %s - assume out of "
805 dev
->name
, print_mac(mac
, ifsta
->bssid
));
809 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
811 local
->scan_ssid_len
);
812 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
814 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
815 if (time_after(jiffies
, ifsta
->last_probe
+
816 IEEE80211_PROBE_INTERVAL
)) {
817 ifsta
->last_probe
= jiffies
;
818 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
826 union iwreq_data wrqu
;
827 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
828 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
829 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
830 mod_timer(&ifsta
->timer
, jiffies
+
831 IEEE80211_MONITORING_INTERVAL
+ 30 * HZ
);
833 mod_timer(&ifsta
->timer
, jiffies
+
834 IEEE80211_MONITORING_INTERVAL
);
839 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
840 u8
*ssid
, size_t ssid_len
)
842 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
843 struct ieee80211_hw_mode
*mode
;
845 struct ieee80211_mgmt
*mgmt
;
846 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
849 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
851 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
852 "request\n", dev
->name
);
855 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
857 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
859 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
860 IEEE80211_STYPE_PROBE_REQ
);
861 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
863 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
864 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
866 memset(mgmt
->da
, 0xff, ETH_ALEN
);
867 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
869 pos
= skb_put(skb
, 2 + ssid_len
);
870 *pos
++ = WLAN_EID_SSID
;
872 memcpy(pos
, ssid
, ssid_len
);
874 supp_rates
= skb_put(skb
, 2);
875 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
877 mode
= local
->oper_hw_mode
;
878 for (i
= 0; i
< mode
->num_rates
; i
++) {
879 struct ieee80211_rate
*rate
= &mode
->rates
[i
];
880 if (!(rate
->flags
& IEEE80211_RATE_SUPPORTED
))
883 pos
= skb_put(skb
, 1);
885 } else if (supp_rates
[1] == 8) {
886 esupp_rates
= skb_put(skb
, 3);
887 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
889 pos
= &esupp_rates
[2];
891 pos
= skb_put(skb
, 1);
894 *pos
= rate
->rate
/ 5;
897 ieee80211_sta_tx(dev
, skb
, 0);
901 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
903 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
904 if (!sdata
|| !sdata
->default_key
||
905 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
911 static void ieee80211_auth_completed(struct net_device
*dev
,
912 struct ieee80211_if_sta
*ifsta
)
914 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
915 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
916 ieee80211_associate(dev
, ifsta
);
920 static void ieee80211_auth_challenge(struct net_device
*dev
,
921 struct ieee80211_if_sta
*ifsta
,
922 struct ieee80211_mgmt
*mgmt
,
926 struct ieee802_11_elems elems
;
928 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
929 pos
= mgmt
->u
.auth
.variable
;
930 if (ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
)
932 printk(KERN_DEBUG
"%s: failed to parse Auth(challenge)\n",
936 if (!elems
.challenge
) {
937 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
938 "frame\n", dev
->name
);
941 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
942 elems
.challenge_len
+ 2, 1);
946 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
947 struct ieee80211_if_sta
*ifsta
,
948 struct ieee80211_mgmt
*mgmt
,
951 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
952 u16 auth_alg
, auth_transaction
, status_code
;
953 DECLARE_MAC_BUF(mac
);
955 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
956 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
957 printk(KERN_DEBUG
"%s: authentication frame received from "
958 "%s, but not in authenticate state - ignored\n",
959 dev
->name
, print_mac(mac
, mgmt
->sa
));
964 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
965 "received from %s - ignored\n",
966 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
970 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
971 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
972 printk(KERN_DEBUG
"%s: authentication frame received from "
973 "unknown AP (SA=%s BSSID=%s) - "
974 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
975 print_mac(mac
, mgmt
->bssid
));
979 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
980 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
981 printk(KERN_DEBUG
"%s: authentication frame received from "
982 "unknown BSSID (SA=%s BSSID=%s) - "
983 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
984 print_mac(mac
, mgmt
->bssid
));
988 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
989 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
990 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
992 printk(KERN_DEBUG
"%s: RX authentication from %s (alg=%d "
993 "transaction=%d status=%d)\n",
994 dev
->name
, print_mac(mac
, mgmt
->sa
), auth_alg
,
995 auth_transaction
, status_code
);
997 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
998 /* IEEE 802.11 standard does not require authentication in IBSS
999 * networks and most implementations do not seem to use it.
1000 * However, try to reply to authentication attempts if someone
1001 * has actually implemented this.
1002 * TODO: Could implement shared key authentication. */
1003 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
1004 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
1005 "frame (alg=%d transaction=%d)\n",
1006 dev
->name
, auth_alg
, auth_transaction
);
1009 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1012 if (auth_alg
!= ifsta
->auth_alg
||
1013 auth_transaction
!= ifsta
->auth_transaction
) {
1014 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1015 "(alg=%d transaction=%d)\n",
1016 dev
->name
, auth_alg
, auth_transaction
);
1020 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1021 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1022 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1023 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1025 const int num_algs
= ARRAY_SIZE(algs
);
1027 algs
[0] = algs
[1] = algs
[2] = 0xff;
1028 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1029 algs
[0] = WLAN_AUTH_OPEN
;
1030 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1031 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1032 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1033 algs
[2] = WLAN_AUTH_LEAP
;
1034 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1036 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1040 for (i
= 0; i
< num_algs
; i
++) {
1042 if (pos
>= num_algs
)
1044 if (algs
[pos
] == ifsta
->auth_alg
||
1047 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1048 !ieee80211_sta_wep_configured(dev
))
1050 ifsta
->auth_alg
= algs
[pos
];
1051 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1053 dev
->name
, ifsta
->auth_alg
);
1060 switch (ifsta
->auth_alg
) {
1061 case WLAN_AUTH_OPEN
:
1062 case WLAN_AUTH_LEAP
:
1063 ieee80211_auth_completed(dev
, ifsta
);
1065 case WLAN_AUTH_SHARED_KEY
:
1066 if (ifsta
->auth_transaction
== 4)
1067 ieee80211_auth_completed(dev
, ifsta
);
1069 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1075 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1076 struct ieee80211_if_sta
*ifsta
,
1077 struct ieee80211_mgmt
*mgmt
,
1081 DECLARE_MAC_BUF(mac
);
1084 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1085 "received from %s - ignored\n",
1086 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1090 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1091 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1092 "unknown AP (SA=%s BSSID=%s) - "
1093 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1094 print_mac(mac
, mgmt
->bssid
));
1098 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1100 printk(KERN_DEBUG
"%s: RX deauthentication from %s"
1102 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1104 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1105 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1108 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1109 ifsta
->state
== IEEE80211_ASSOCIATE
||
1110 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1111 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1112 mod_timer(&ifsta
->timer
, jiffies
+
1113 IEEE80211_RETRY_AUTH_INTERVAL
);
1116 ieee80211_set_disassoc(dev
, ifsta
, 1);
1117 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1121 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1122 struct ieee80211_if_sta
*ifsta
,
1123 struct ieee80211_mgmt
*mgmt
,
1127 DECLARE_MAC_BUF(mac
);
1130 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1131 "received from %s - ignored\n",
1132 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1136 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1137 printk(KERN_DEBUG
"%s: disassociation frame received from "
1138 "unknown AP (SA=%s BSSID=%s) - "
1139 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1140 print_mac(mac
, mgmt
->bssid
));
1144 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1146 printk(KERN_DEBUG
"%s: RX disassociation from %s"
1148 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1150 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1151 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1153 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1154 ifsta
->state
= IEEE80211_ASSOCIATE
;
1155 mod_timer(&ifsta
->timer
, jiffies
+
1156 IEEE80211_RETRY_AUTH_INTERVAL
);
1159 ieee80211_set_disassoc(dev
, ifsta
, 0);
1163 static void ieee80211_rx_mgmt_assoc_resp(struct net_device
*dev
,
1164 struct ieee80211_if_sta
*ifsta
,
1165 struct ieee80211_mgmt
*mgmt
,
1169 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1170 struct ieee80211_hw_mode
*mode
;
1171 struct sta_info
*sta
;
1173 u16 capab_info
, status_code
, aid
;
1174 struct ieee802_11_elems elems
;
1177 DECLARE_MAC_BUF(mac
);
1179 /* AssocResp and ReassocResp have identical structure, so process both
1180 * of them in this function. */
1182 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1183 printk(KERN_DEBUG
"%s: association frame received from "
1184 "%s, but not in associate state - ignored\n",
1185 dev
->name
, print_mac(mac
, mgmt
->sa
));
1190 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1191 "received from %s - ignored\n",
1192 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1196 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1197 printk(KERN_DEBUG
"%s: association frame received from "
1198 "unknown AP (SA=%s BSSID=%s) - "
1199 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1200 print_mac(mac
, mgmt
->bssid
));
1204 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1205 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1206 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1207 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1208 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1209 "set\n", dev
->name
, aid
);
1210 aid
&= ~(BIT(15) | BIT(14));
1212 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
1213 "status=%d aid=%d)\n",
1214 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
1215 capab_info
, status_code
, aid
);
1217 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1218 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1219 dev
->name
, status_code
);
1220 /* if this was a reassociation, ensure we try a "full"
1221 * association next time. This works around some broken APs
1222 * which do not correctly reject reassociation requests. */
1223 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1227 pos
= mgmt
->u
.assoc_resp
.variable
;
1228 if (ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
)
1230 printk(KERN_DEBUG
"%s: failed to parse AssocResp\n",
1235 if (!elems
.supp_rates
) {
1236 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1241 /* it probably doesn't, but if the frame includes an ERP value then
1242 * update our stored copy */
1243 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
1244 struct ieee80211_sta_bss
*bss
1245 = ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
1247 bss
->erp_value
= elems
.erp_info
[0];
1248 bss
->has_erp_value
= 1;
1249 ieee80211_rx_bss_put(dev
, bss
);
1253 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1255 ifsta
->ap_capab
= capab_info
;
1257 kfree(ifsta
->assocresp_ies
);
1258 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1259 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1260 if (ifsta
->assocresp_ies
)
1261 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1263 ieee80211_set_associated(dev
, ifsta
, 1);
1265 /* Add STA entry for the AP */
1266 sta
= sta_info_get(local
, ifsta
->bssid
);
1268 struct ieee80211_sta_bss
*bss
;
1269 sta
= sta_info_add(local
, dev
, ifsta
->bssid
, GFP_KERNEL
);
1271 printk(KERN_DEBUG
"%s: failed to add STA entry for the"
1272 " AP\n", dev
->name
);
1275 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
1277 sta
->last_rssi
= bss
->rssi
;
1278 sta
->last_signal
= bss
->signal
;
1279 sta
->last_noise
= bss
->noise
;
1280 ieee80211_rx_bss_put(dev
, bss
);
1285 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
;
1288 mode
= local
->oper_hw_mode
;
1289 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1290 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1291 for (j
= 0; j
< mode
->num_rates
; j
++)
1292 if (mode
->rates
[j
].rate
== rate
)
1295 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1296 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1297 for (j
= 0; j
< mode
->num_rates
; j
++)
1298 if (mode
->rates
[j
].rate
== rate
)
1301 sta
->supp_rates
= rates
;
1303 rate_control_rate_init(sta
, local
);
1305 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1306 sta
->flags
|= WLAN_STA_WME
;
1307 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1308 elems
.wmm_param_len
);
1314 ieee80211_associated(dev
, ifsta
);
1318 /* Caller must hold local->sta_bss_lock */
1319 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
1320 struct ieee80211_sta_bss
*bss
)
1322 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1323 bss
->hnext
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1324 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] = bss
;
1328 /* Caller must hold local->sta_bss_lock */
1329 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
1330 struct ieee80211_sta_bss
*bss
)
1332 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1333 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
1334 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1338 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
1341 prev
->hnext
= bss
->hnext
;
1350 static struct ieee80211_sta_bss
*
1351 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
)
1353 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1354 struct ieee80211_sta_bss
*bss
;
1356 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
1359 atomic_inc(&bss
->users
);
1360 atomic_inc(&bss
->users
);
1361 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
1363 spin_lock_bh(&local
->sta_bss_lock
);
1364 /* TODO: order by RSSI? */
1365 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
1366 __ieee80211_rx_bss_hash_add(dev
, bss
);
1367 spin_unlock_bh(&local
->sta_bss_lock
);
1372 static struct ieee80211_sta_bss
*
1373 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
)
1375 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1376 struct ieee80211_sta_bss
*bss
;
1378 spin_lock_bh(&local
->sta_bss_lock
);
1379 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
1381 if (memcmp(bss
->bssid
, bssid
, ETH_ALEN
) == 0) {
1382 atomic_inc(&bss
->users
);
1387 spin_unlock_bh(&local
->sta_bss_lock
);
1392 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
1401 static void ieee80211_rx_bss_put(struct net_device
*dev
,
1402 struct ieee80211_sta_bss
*bss
)
1404 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1405 if (!atomic_dec_and_test(&bss
->users
))
1408 spin_lock_bh(&local
->sta_bss_lock
);
1409 __ieee80211_rx_bss_hash_del(dev
, bss
);
1410 list_del(&bss
->list
);
1411 spin_unlock_bh(&local
->sta_bss_lock
);
1412 ieee80211_rx_bss_free(bss
);
1416 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
1418 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1419 spin_lock_init(&local
->sta_bss_lock
);
1420 INIT_LIST_HEAD(&local
->sta_bss_list
);
1424 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
1426 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1427 struct ieee80211_sta_bss
*bss
, *tmp
;
1429 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
1430 ieee80211_rx_bss_put(dev
, bss
);
1434 static void ieee80211_rx_bss_info(struct net_device
*dev
,
1435 struct ieee80211_mgmt
*mgmt
,
1437 struct ieee80211_rx_status
*rx_status
,
1440 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1441 struct ieee802_11_elems elems
;
1443 int channel
, invalid
= 0, clen
;
1444 struct ieee80211_sta_bss
*bss
;
1445 struct sta_info
*sta
;
1446 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1448 DECLARE_MAC_BUF(mac
);
1449 DECLARE_MAC_BUF(mac2
);
1451 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
1452 return; /* ignore ProbeResp to foreign address */
1455 printk(KERN_DEBUG
"%s: RX %s from %s to %s\n",
1456 dev
->name
, beacon
? "Beacon" : "Probe Response",
1457 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
));
1460 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
1464 timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
1466 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
1467 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0) {
1468 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1469 static unsigned long last_tsf_debug
= 0;
1471 if (local
->ops
->get_tsf
)
1472 tsf
= local
->ops
->get_tsf(local_to_hw(local
));
1475 if (time_after(jiffies
, last_tsf_debug
+ 5 * HZ
)) {
1476 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
1477 "%s TSF=0x%llx BCN=0x%llx diff=%lld "
1479 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->bssid
),
1480 (unsigned long long)tsf
,
1481 (unsigned long long)timestamp
,
1482 (unsigned long long)(tsf
- timestamp
),
1484 last_tsf_debug
= jiffies
;
1486 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1489 if (ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
,
1490 &elems
) == ParseFailed
)
1493 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
1494 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
1495 (sta
= sta_info_get(local
, mgmt
->sa
))) {
1496 struct ieee80211_hw_mode
*mode
;
1497 struct ieee80211_rate
*rates
;
1499 u32 supp_rates
, prev_rates
;
1502 mode
= local
->sta_scanning
?
1503 local
->scan_hw_mode
: local
->oper_hw_mode
;
1504 rates
= mode
->rates
;
1505 num_rates
= mode
->num_rates
;
1508 for (i
= 0; i
< elems
.supp_rates_len
+
1509 elems
.ext_supp_rates_len
; i
++) {
1512 if (i
< elems
.supp_rates_len
)
1513 rate
= elems
.supp_rates
[i
];
1514 else if (elems
.ext_supp_rates
)
1515 rate
= elems
.ext_supp_rates
1516 [i
- elems
.supp_rates_len
];
1517 own_rate
= 5 * (rate
& 0x7f);
1518 for (j
= 0; j
< num_rates
; j
++)
1519 if (rates
[j
].rate
== own_rate
)
1520 supp_rates
|= BIT(j
);
1523 prev_rates
= sta
->supp_rates
;
1524 sta
->supp_rates
&= supp_rates
;
1525 if (sta
->supp_rates
== 0) {
1526 /* No matching rates - this should not really happen.
1527 * Make sure that at least one rate is marked
1528 * supported to avoid issues with TX rate ctrl. */
1529 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
1531 if (sta
->supp_rates
!= prev_rates
) {
1532 printk(KERN_DEBUG
"%s: updated supp_rates set for "
1533 "%s based on beacon info (0x%x & 0x%x -> "
1535 dev
->name
, print_mac(mac
, sta
->addr
), prev_rates
,
1536 supp_rates
, sta
->supp_rates
);
1544 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
1545 channel
= elems
.ds_params
[0];
1547 channel
= rx_status
->channel
;
1549 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
);
1551 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
);
1556 /* TODO: order by RSSI? */
1557 spin_lock_bh(&local
->sta_bss_lock
);
1558 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
1559 spin_unlock_bh(&local
->sta_bss_lock
);
1563 if (bss
->probe_resp
&& beacon
) {
1564 /* Do not allow beacon to override data from Probe Response. */
1565 ieee80211_rx_bss_put(dev
, bss
);
1569 /* save the ERP value so that it is available at association time */
1570 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
1571 bss
->erp_value
= elems
.erp_info
[0];
1572 bss
->has_erp_value
= 1;
1575 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
1576 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
1577 if (elems
.ssid
&& elems
.ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
1578 memcpy(bss
->ssid
, elems
.ssid
, elems
.ssid_len
);
1579 bss
->ssid_len
= elems
.ssid_len
;
1582 bss
->supp_rates_len
= 0;
1583 if (elems
.supp_rates
) {
1584 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
1585 if (clen
> elems
.supp_rates_len
)
1586 clen
= elems
.supp_rates_len
;
1587 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
1589 bss
->supp_rates_len
+= clen
;
1591 if (elems
.ext_supp_rates
) {
1592 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
1593 if (clen
> elems
.ext_supp_rates_len
)
1594 clen
= elems
.ext_supp_rates_len
;
1595 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
1596 elems
.ext_supp_rates
, clen
);
1597 bss
->supp_rates_len
+= clen
;
1601 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
1602 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
1604 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
1606 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
1607 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
1609 bss
->wpa_ie_len
= 0;
1610 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
1613 bss
->wpa_ie_len
= 0;
1617 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
1618 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
1620 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
1622 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
1623 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
1625 bss
->rsn_ie_len
= 0;
1626 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
1629 bss
->rsn_ie_len
= 0;
1632 if (elems
.wmm_param
&&
1633 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
1634 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
1636 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
1638 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
1639 elems
.wmm_param_len
+ 2);
1640 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
1642 bss
->wmm_ie_len
= 0;
1643 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
1646 bss
->wmm_ie_len
= 0;
1650 bss
->hw_mode
= rx_status
->phymode
;
1651 bss
->channel
= channel
;
1652 bss
->freq
= rx_status
->freq
;
1653 if (channel
!= rx_status
->channel
&&
1654 (bss
->hw_mode
== MODE_IEEE80211G
||
1655 bss
->hw_mode
== MODE_IEEE80211B
) &&
1656 channel
>= 1 && channel
<= 14) {
1657 static const int freq_list
[] = {
1658 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1659 2447, 2452, 2457, 2462, 2467, 2472, 2484
1661 /* IEEE 802.11g/b mode can receive packets from neighboring
1662 * channels, so map the channel into frequency. */
1663 bss
->freq
= freq_list
[channel
- 1];
1665 bss
->timestamp
= timestamp
;
1666 bss
->last_update
= jiffies
;
1667 bss
->rssi
= rx_status
->ssi
;
1668 bss
->signal
= rx_status
->signal
;
1669 bss
->noise
= rx_status
->noise
;
1672 ieee80211_rx_bss_put(dev
, bss
);
1676 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
1677 struct ieee80211_mgmt
*mgmt
,
1679 struct ieee80211_rx_status
*rx_status
)
1681 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
1685 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
1686 struct ieee80211_mgmt
*mgmt
,
1688 struct ieee80211_rx_status
*rx_status
)
1690 struct ieee80211_sub_if_data
*sdata
;
1691 struct ieee80211_if_sta
*ifsta
;
1693 struct ieee802_11_elems elems
;
1695 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
1697 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1698 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
1700 ifsta
= &sdata
->u
.sta
;
1702 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
1703 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
1706 /* Process beacon from the current BSS */
1707 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
1711 if (ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
,
1712 &elems
) == ParseFailed
)
1715 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
1716 ieee80211_handle_erp_ie(dev
, elems
.erp_info
[0]);
1718 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1719 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1720 elems
.wmm_param_len
);
1725 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
1726 struct ieee80211_if_sta
*ifsta
,
1727 struct ieee80211_mgmt
*mgmt
,
1729 struct ieee80211_rx_status
*rx_status
)
1731 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1732 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1734 struct sk_buff
*skb
;
1735 struct ieee80211_mgmt
*resp
;
1737 DECLARE_MAC_BUF(mac
);
1738 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1739 DECLARE_MAC_BUF(mac2
);
1740 DECLARE_MAC_BUF(mac3
);
1743 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
||
1744 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
1745 len
< 24 + 2 || !ifsta
->probe_resp
)
1748 if (local
->ops
->tx_last_beacon
)
1749 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
1753 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1754 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
1755 "%s (tx_last_beacon=%d)\n",
1756 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
1757 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
1758 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1760 if (!tx_last_beacon
)
1763 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
1764 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
1767 end
= ((u8
*) mgmt
) + len
;
1768 pos
= mgmt
->u
.probe_req
.variable
;
1769 if (pos
[0] != WLAN_EID_SSID
||
1770 pos
+ 2 + pos
[1] > end
) {
1771 if (net_ratelimit()) {
1772 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
1774 dev
->name
, print_mac(mac
, mgmt
->sa
));
1779 (pos
[1] != ifsta
->ssid_len
||
1780 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
1781 /* Ignore ProbeReq for foreign SSID */
1785 /* Reply with ProbeResp */
1786 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
1790 resp
= (struct ieee80211_mgmt
*) skb
->data
;
1791 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
1792 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1793 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
1794 dev
->name
, print_mac(mac
, resp
->da
));
1795 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1796 ieee80211_sta_tx(dev
, skb
, 0);
1800 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
1801 struct ieee80211_rx_status
*rx_status
)
1803 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1804 struct ieee80211_sub_if_data
*sdata
;
1805 struct ieee80211_if_sta
*ifsta
;
1806 struct ieee80211_mgmt
*mgmt
;
1812 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1813 ifsta
= &sdata
->u
.sta
;
1815 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1816 fc
= le16_to_cpu(mgmt
->frame_control
);
1818 switch (fc
& IEEE80211_FCTL_STYPE
) {
1819 case IEEE80211_STYPE_PROBE_REQ
:
1820 case IEEE80211_STYPE_PROBE_RESP
:
1821 case IEEE80211_STYPE_BEACON
:
1822 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
1823 case IEEE80211_STYPE_AUTH
:
1824 case IEEE80211_STYPE_ASSOC_RESP
:
1825 case IEEE80211_STYPE_REASSOC_RESP
:
1826 case IEEE80211_STYPE_DEAUTH
:
1827 case IEEE80211_STYPE_DISASSOC
:
1828 skb_queue_tail(&ifsta
->skb_queue
, skb
);
1829 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
1832 printk(KERN_DEBUG
"%s: received unknown management frame - "
1833 "stype=%d\n", dev
->name
,
1834 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
1843 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
1844 struct sk_buff
*skb
)
1846 struct ieee80211_rx_status
*rx_status
;
1847 struct ieee80211_sub_if_data
*sdata
;
1848 struct ieee80211_if_sta
*ifsta
;
1849 struct ieee80211_mgmt
*mgmt
;
1852 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1853 ifsta
= &sdata
->u
.sta
;
1855 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
1856 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1857 fc
= le16_to_cpu(mgmt
->frame_control
);
1859 switch (fc
& IEEE80211_FCTL_STYPE
) {
1860 case IEEE80211_STYPE_PROBE_REQ
:
1861 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
1864 case IEEE80211_STYPE_PROBE_RESP
:
1865 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
1867 case IEEE80211_STYPE_BEACON
:
1868 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
1870 case IEEE80211_STYPE_AUTH
:
1871 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
1873 case IEEE80211_STYPE_ASSOC_RESP
:
1874 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 0);
1876 case IEEE80211_STYPE_REASSOC_RESP
:
1877 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 1);
1879 case IEEE80211_STYPE_DEAUTH
:
1880 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
1882 case IEEE80211_STYPE_DISASSOC
:
1883 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
1891 void ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
1892 struct ieee80211_rx_status
*rx_status
)
1894 struct ieee80211_mgmt
*mgmt
;
1897 if (skb
->len
< 24) {
1902 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1903 fc
= le16_to_cpu(mgmt
->frame_control
);
1905 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
1906 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
1907 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
1908 skb
->len
, rx_status
);
1909 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
1910 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
1919 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
1921 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1923 struct sta_info
*sta
;
1925 read_lock_bh(&local
->sta_lock
);
1926 list_for_each_entry(sta
, &local
->sta_list
, list
) {
1927 if (sta
->dev
== dev
&&
1928 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
1934 read_unlock_bh(&local
->sta_lock
);
1940 static void ieee80211_sta_expire(struct net_device
*dev
)
1942 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1943 struct sta_info
*sta
, *tmp
;
1944 LIST_HEAD(tmp_list
);
1945 DECLARE_MAC_BUF(mac
);
1947 write_lock_bh(&local
->sta_lock
);
1948 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
1949 if (time_after(jiffies
, sta
->last_rx
+
1950 IEEE80211_IBSS_INACTIVITY_LIMIT
)) {
1951 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
1952 dev
->name
, print_mac(mac
, sta
->addr
));
1953 __sta_info_get(sta
);
1954 sta_info_remove(sta
);
1955 list_add(&sta
->list
, &tmp_list
);
1957 write_unlock_bh(&local
->sta_lock
);
1959 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
) {
1966 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
1967 struct ieee80211_if_sta
*ifsta
)
1969 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
1971 ieee80211_sta_expire(dev
);
1972 if (ieee80211_sta_active_ibss(dev
))
1975 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
1976 "IBSS networks with same SSID (merge)\n", dev
->name
);
1977 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
1981 void ieee80211_sta_timer(unsigned long data
)
1983 struct ieee80211_sub_if_data
*sdata
=
1984 (struct ieee80211_sub_if_data
*) data
;
1985 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1986 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
1988 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
1989 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
1993 void ieee80211_sta_work(struct work_struct
*work
)
1995 struct ieee80211_sub_if_data
*sdata
=
1996 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
1997 struct net_device
*dev
= sdata
->dev
;
1998 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1999 struct ieee80211_if_sta
*ifsta
;
2000 struct sk_buff
*skb
;
2002 if (!netif_running(dev
))
2005 if (local
->sta_scanning
)
2008 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
&&
2009 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
2010 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
2011 "(type=%d)\n", dev
->name
, sdata
->type
);
2014 ifsta
= &sdata
->u
.sta
;
2016 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
2017 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
2019 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
2020 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
2021 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
2022 ieee80211_sta_start_scan(dev
, NULL
, 0);
2026 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
2027 if (ieee80211_sta_config_auth(dev
, ifsta
))
2029 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2030 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
2033 switch (ifsta
->state
) {
2034 case IEEE80211_DISABLED
:
2036 case IEEE80211_AUTHENTICATE
:
2037 ieee80211_authenticate(dev
, ifsta
);
2039 case IEEE80211_ASSOCIATE
:
2040 ieee80211_associate(dev
, ifsta
);
2042 case IEEE80211_ASSOCIATED
:
2043 ieee80211_associated(dev
, ifsta
);
2045 case IEEE80211_IBSS_SEARCH
:
2046 ieee80211_sta_find_ibss(dev
, ifsta
);
2048 case IEEE80211_IBSS_JOINED
:
2049 ieee80211_sta_merge_ibss(dev
, ifsta
);
2052 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
2057 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
2058 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
2059 "mixed-cell disabled - disassociate\n", dev
->name
);
2061 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
2062 ieee80211_set_disassoc(dev
, ifsta
, 0);
2067 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
2068 struct ieee80211_if_sta
*ifsta
)
2070 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2072 if (local
->ops
->reset_tsf
) {
2073 /* Reset own TSF to allow time synchronization work. */
2074 local
->ops
->reset_tsf(local_to_hw(local
));
2077 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
2080 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
2081 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2082 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
2083 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
2084 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
2085 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
2087 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2088 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
2090 ifsta
->auth_transaction
= -1;
2091 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
2092 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
2093 netif_carrier_off(dev
);
2097 void ieee80211_sta_req_auth(struct net_device
*dev
,
2098 struct ieee80211_if_sta
*ifsta
)
2100 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2101 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2103 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
2106 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
2107 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
2108 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
2109 IEEE80211_STA_AUTO_SSID_SEL
))) {
2110 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2111 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2115 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
2116 const char *ssid
, int ssid_len
)
2118 int tmp
, hidden_ssid
;
2120 if (!memcmp(ifsta
->ssid
, ssid
, ssid_len
))
2123 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
2129 if (ssid
[tmp
] != '\0') {
2135 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
2138 if (ssid_len
== 1 && ssid
[0] == ' ')
2144 static int ieee80211_sta_config_auth(struct net_device
*dev
,
2145 struct ieee80211_if_sta
*ifsta
)
2147 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2148 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2149 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
2150 int top_rssi
= 0, freq
;
2152 if (!(ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
2153 IEEE80211_STA_AUTO_BSSID_SEL
| IEEE80211_STA_AUTO_CHANNEL_SEL
))) {
2154 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2155 ieee80211_sta_reset_auth(dev
, ifsta
);
2159 spin_lock_bh(&local
->sta_bss_lock
);
2160 freq
= local
->oper_channel
->freq
;
2161 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2162 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
2165 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
2166 !!sdata
->default_key
)
2169 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
2173 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
2174 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
2177 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
2178 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
2181 if (!selected
|| top_rssi
< bss
->rssi
) {
2183 top_rssi
= bss
->rssi
;
2187 atomic_inc(&selected
->users
);
2188 spin_unlock_bh(&local
->sta_bss_lock
);
2191 ieee80211_set_channel(local
, -1, selected
->freq
);
2192 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
2193 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
2194 selected
->ssid_len
);
2195 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
2196 ieee80211_rx_bss_put(dev
, selected
);
2197 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2198 ieee80211_sta_reset_auth(dev
, ifsta
);
2201 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
2202 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
2203 ieee80211_sta_start_scan(dev
, NULL
, 0);
2205 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
2207 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2208 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2210 ifsta
->state
= IEEE80211_DISABLED
;
2215 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2216 struct ieee80211_if_sta
*ifsta
,
2217 struct ieee80211_sta_bss
*bss
)
2219 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2220 int res
, rates
, i
, j
;
2221 struct sk_buff
*skb
;
2222 struct ieee80211_mgmt
*mgmt
;
2223 struct ieee80211_tx_control control
;
2224 struct ieee80211_rate
*rate
;
2225 struct ieee80211_hw_mode
*mode
;
2226 struct rate_control_extra extra
;
2228 struct ieee80211_sub_if_data
*sdata
;
2230 /* Remove possible STA entries from other IBSS networks. */
2231 sta_info_flush(local
, NULL
);
2233 if (local
->ops
->reset_tsf
) {
2234 /* Reset own TSF to allow time synchronization work. */
2235 local
->ops
->reset_tsf(local_to_hw(local
));
2237 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2238 res
= ieee80211_if_config(dev
);
2242 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2244 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2245 sdata
->drop_unencrypted
= bss
->capability
&
2246 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2248 res
= ieee80211_set_channel(local
, -1, bss
->freq
);
2250 if (!(local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)) {
2251 printk(KERN_DEBUG
"%s: IBSS not allowed on channel %d "
2252 "(%d MHz)\n", dev
->name
, local
->hw
.conf
.channel
,
2253 local
->hw
.conf
.freq
);
2257 /* Set beacon template based on scan results */
2258 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2263 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2265 mgmt
= (struct ieee80211_mgmt
*)
2266 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2267 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2268 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2269 IEEE80211_STYPE_BEACON
);
2270 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2271 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2272 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2273 mgmt
->u
.beacon
.beacon_int
=
2274 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2275 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2277 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2278 *pos
++ = WLAN_EID_SSID
;
2279 *pos
++ = ifsta
->ssid_len
;
2280 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2282 rates
= bss
->supp_rates_len
;
2285 pos
= skb_put(skb
, 2 + rates
);
2286 *pos
++ = WLAN_EID_SUPP_RATES
;
2288 memcpy(pos
, bss
->supp_rates
, rates
);
2290 pos
= skb_put(skb
, 2 + 1);
2291 *pos
++ = WLAN_EID_DS_PARAMS
;
2293 *pos
++ = bss
->channel
;
2295 pos
= skb_put(skb
, 2 + 2);
2296 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2298 /* FIX: set ATIM window based on scan results */
2302 if (bss
->supp_rates_len
> 8) {
2303 rates
= bss
->supp_rates_len
- 8;
2304 pos
= skb_put(skb
, 2 + rates
);
2305 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2307 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2310 memset(&control
, 0, sizeof(control
));
2311 memset(&extra
, 0, sizeof(extra
));
2312 extra
.mode
= local
->oper_hw_mode
;
2313 rate
= rate_control_get_rate(local
, dev
, skb
, &extra
);
2315 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2316 "for IBSS beacon\n", dev
->name
);
2320 ((sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
) &&
2321 (rate
->flags
& IEEE80211_RATE_PREAMBLE2
)) ?
2322 rate
->val2
: rate
->val
;
2323 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
2324 control
.power_level
= local
->hw
.conf
.power_level
;
2325 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
2326 control
.retry_limit
= 1;
2328 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
2329 if (ifsta
->probe_resp
) {
2330 mgmt
= (struct ieee80211_mgmt
*)
2331 ifsta
->probe_resp
->data
;
2332 mgmt
->frame_control
=
2333 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2334 IEEE80211_STYPE_PROBE_RESP
);
2336 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
2337 "template for IBSS\n", dev
->name
);
2340 if (local
->ops
->beacon_update
&&
2341 local
->ops
->beacon_update(local_to_hw(local
),
2342 skb
, &control
) == 0) {
2343 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
2344 "template based on scan results\n", dev
->name
);
2349 mode
= local
->oper_hw_mode
;
2350 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2351 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2352 for (j
= 0; j
< mode
->num_rates
; j
++)
2353 if (mode
->rates
[j
].rate
== bitrate
)
2356 ifsta
->supp_rates_bits
= rates
;
2360 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
2361 "template\n", dev
->name
);
2365 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2366 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2368 ieee80211_rx_bss_put(dev
, bss
);
2374 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
2375 struct ieee80211_if_sta
*ifsta
)
2377 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2378 struct ieee80211_sta_bss
*bss
;
2379 struct ieee80211_sub_if_data
*sdata
;
2380 struct ieee80211_hw_mode
*mode
;
2381 u8 bssid
[ETH_ALEN
], *pos
;
2383 DECLARE_MAC_BUF(mac
);
2386 /* Easier testing, use fixed BSSID. */
2387 memset(bssid
, 0xfe, ETH_ALEN
);
2389 /* Generate random, not broadcast, locally administered BSSID. Mix in
2390 * own MAC address to make sure that devices that do not have proper
2391 * random number generator get different BSSID. */
2392 get_random_bytes(bssid
, ETH_ALEN
);
2393 for (i
= 0; i
< ETH_ALEN
; i
++)
2394 bssid
[i
] ^= dev
->dev_addr
[i
];
2399 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
2400 dev
->name
, print_mac(mac
, bssid
));
2402 bss
= ieee80211_rx_bss_add(dev
, bssid
);
2406 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2407 mode
= local
->oper_hw_mode
;
2409 if (local
->hw
.conf
.beacon_int
== 0)
2410 local
->hw
.conf
.beacon_int
= 100;
2411 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
2412 bss
->hw_mode
= local
->hw
.conf
.phymode
;
2413 bss
->channel
= local
->hw
.conf
.channel
;
2414 bss
->freq
= local
->hw
.conf
.freq
;
2415 bss
->last_update
= jiffies
;
2416 bss
->capability
= WLAN_CAPABILITY_IBSS
;
2417 if (sdata
->default_key
) {
2418 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
2420 sdata
->drop_unencrypted
= 0;
2421 bss
->supp_rates_len
= mode
->num_rates
;
2422 pos
= bss
->supp_rates
;
2423 for (i
= 0; i
< mode
->num_rates
; i
++) {
2424 int rate
= mode
->rates
[i
].rate
;
2425 *pos
++ = (u8
) (rate
/ 5);
2428 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2432 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
2433 struct ieee80211_if_sta
*ifsta
)
2435 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2436 struct ieee80211_sta_bss
*bss
;
2440 DECLARE_MAC_BUF(mac
);
2441 DECLARE_MAC_BUF(mac2
);
2443 if (ifsta
->ssid_len
== 0)
2446 active_ibss
= ieee80211_sta_active_ibss(dev
);
2447 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2448 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
2449 dev
->name
, active_ibss
);
2450 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2451 spin_lock_bh(&local
->sta_bss_lock
);
2452 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2453 if (ifsta
->ssid_len
!= bss
->ssid_len
||
2454 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
2455 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
2457 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2458 printk(KERN_DEBUG
" bssid=%s found\n",
2459 print_mac(mac
, bss
->bssid
));
2460 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2461 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
2463 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
2466 spin_unlock_bh(&local
->sta_bss_lock
);
2468 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2469 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
2470 "%s\n", print_mac(mac
, bssid
), print_mac(mac2
, ifsta
->bssid
));
2471 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2472 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
2473 (bss
= ieee80211_rx_bss_get(dev
, bssid
))) {
2474 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
2475 " based on configured SSID\n",
2476 dev
->name
, print_mac(mac
, bssid
));
2477 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2479 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2480 printk(KERN_DEBUG
" did not try to join ibss\n");
2481 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2483 /* Selected IBSS not found in current scan results - try to scan */
2484 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
2485 !ieee80211_sta_active_ibss(dev
)) {
2486 mod_timer(&ifsta
->timer
, jiffies
+
2487 IEEE80211_IBSS_MERGE_INTERVAL
);
2488 } else if (time_after(jiffies
, local
->last_scan_completed
+
2489 IEEE80211_SCAN_INTERVAL
)) {
2490 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
2491 "join\n", dev
->name
);
2492 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
2494 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
2495 int interval
= IEEE80211_SCAN_INTERVAL
;
2497 if (time_after(jiffies
, ifsta
->ibss_join_req
+
2498 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
2499 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
2500 local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)
2501 return ieee80211_sta_create_ibss(dev
, ifsta
);
2502 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
2503 printk(KERN_DEBUG
"%s: IBSS not allowed on the"
2504 " configured channel %d (%d MHz)\n",
2505 dev
->name
, local
->hw
.conf
.channel
,
2506 local
->hw
.conf
.freq
);
2509 /* No IBSS found - decrease scan interval and continue
2511 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
2514 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
2515 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
2523 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
2525 struct ieee80211_sub_if_data
*sdata
;
2526 struct ieee80211_if_sta
*ifsta
;
2527 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2529 if (len
> IEEE80211_MAX_SSID_LEN
)
2532 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
2534 if (local
->ops
->conf_tx
) {
2535 struct ieee80211_tx_queue_params qparam
;
2538 memset(&qparam
, 0, sizeof(qparam
));
2539 /* TODO: are these ok defaults for all hw_modes? */
2542 local
->hw
.conf
.phymode
== MODE_IEEE80211B
? 31 : 15;
2543 qparam
.cw_max
= 1023;
2544 qparam
.burst_time
= 0;
2545 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
2547 local
->ops
->conf_tx(local_to_hw(local
),
2548 i
+ IEEE80211_TX_QUEUE_DATA0
,
2551 /* IBSS uses different parameters for Beacon sending */
2555 local
->ops
->conf_tx(local_to_hw(local
),
2556 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
2559 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2560 ifsta
= &sdata
->u
.sta
;
2562 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
2563 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
2564 memcpy(ifsta
->ssid
, ssid
, len
);
2565 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
2566 ifsta
->ssid_len
= len
;
2569 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
2571 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
2572 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&&
2573 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
2574 ifsta
->ibss_join_req
= jiffies
;
2575 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
2576 return ieee80211_sta_find_ibss(dev
, ifsta
);
2582 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
2584 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2585 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2586 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
2587 *len
= ifsta
->ssid_len
;
2592 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
2594 struct ieee80211_sub_if_data
*sdata
;
2595 struct ieee80211_if_sta
*ifsta
;
2598 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2599 ifsta
= &sdata
->u
.sta
;
2601 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
2602 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
2603 res
= ieee80211_if_config(dev
);
2605 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
2606 "the low-level driver\n", dev
->name
);
2611 if (is_valid_ether_addr(bssid
))
2612 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
2614 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
2620 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
2621 struct ieee80211_sub_if_data
*sdata
,
2624 struct sk_buff
*skb
;
2625 struct ieee80211_hdr
*nullfunc
;
2628 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
2630 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
2631 "frame\n", sdata
->dev
->name
);
2634 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2636 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
2637 memset(nullfunc
, 0, 24);
2638 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
2639 IEEE80211_FCTL_TODS
;
2641 fc
|= IEEE80211_FCTL_PM
;
2642 nullfunc
->frame_control
= cpu_to_le16(fc
);
2643 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
2644 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
2645 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
2647 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
2651 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
2653 struct ieee80211_local
*local
= hw_to_local(hw
);
2654 struct net_device
*dev
= local
->scan_dev
;
2655 struct ieee80211_sub_if_data
*sdata
;
2656 union iwreq_data wrqu
;
2658 local
->last_scan_completed
= jiffies
;
2660 local
->sta_scanning
= 0;
2662 if (ieee80211_hw_config(local
))
2663 printk(KERN_DEBUG
"%s: failed to restore operational"
2664 "channel after scan\n", dev
->name
);
2666 if (!(local
->hw
.flags
& IEEE80211_HW_NO_PROBE_FILTERING
) &&
2667 ieee80211_if_config(dev
))
2668 printk(KERN_DEBUG
"%s: failed to restore operational"
2669 "BSSID after scan\n", dev
->name
);
2671 memset(&wrqu
, 0, sizeof(wrqu
));
2672 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
2674 read_lock(&local
->sub_if_lock
);
2675 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
2677 /* No need to wake the master device. */
2678 if (sdata
->dev
== local
->mdev
)
2681 if (sdata
->type
== IEEE80211_IF_TYPE_STA
) {
2682 if (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
2683 ieee80211_send_nullfunc(local
, sdata
, 0);
2684 ieee80211_sta_timer((unsigned long)sdata
);
2687 netif_wake_queue(sdata
->dev
);
2689 read_unlock(&local
->sub_if_lock
);
2691 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2692 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
2693 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2694 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
2695 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
2696 !ieee80211_sta_active_ibss(dev
)))
2697 ieee80211_sta_find_ibss(dev
, ifsta
);
2700 EXPORT_SYMBOL(ieee80211_scan_completed
);
2702 void ieee80211_sta_scan_work(struct work_struct
*work
)
2704 struct ieee80211_local
*local
=
2705 container_of(work
, struct ieee80211_local
, scan_work
.work
);
2706 struct net_device
*dev
= local
->scan_dev
;
2707 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2708 struct ieee80211_hw_mode
*mode
;
2709 struct ieee80211_channel
*chan
;
2711 unsigned long next_delay
= 0;
2713 if (!local
->sta_scanning
)
2716 switch (local
->scan_state
) {
2717 case SCAN_SET_CHANNEL
:
2718 mode
= local
->scan_hw_mode
;
2719 if (local
->scan_hw_mode
->list
.next
== &local
->modes_list
&&
2720 local
->scan_channel_idx
>= mode
->num_channels
) {
2721 ieee80211_scan_completed(local_to_hw(local
));
2724 skip
= !(local
->enabled_modes
& (1 << mode
->mode
));
2725 chan
= &mode
->channels
[local
->scan_channel_idx
];
2726 if (!(chan
->flag
& IEEE80211_CHAN_W_SCAN
) ||
2727 (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&&
2728 !(chan
->flag
& IEEE80211_CHAN_W_IBSS
)) ||
2729 (local
->hw_modes
& local
->enabled_modes
&
2730 (1 << MODE_IEEE80211G
) && mode
->mode
== MODE_IEEE80211B
))
2735 printk(KERN_DEBUG
"%s: scan channel %d (%d MHz)\n",
2736 dev
->name
, chan
->chan
, chan
->freq
);
2739 local
->scan_channel
= chan
;
2740 if (ieee80211_hw_config(local
)) {
2741 printk(KERN_DEBUG
"%s: failed to set channel "
2742 "%d (%d MHz) for scan\n", dev
->name
,
2743 chan
->chan
, chan
->freq
);
2748 local
->scan_channel_idx
++;
2749 if (local
->scan_channel_idx
>= local
->scan_hw_mode
->num_channels
) {
2750 if (local
->scan_hw_mode
->list
.next
!= &local
->modes_list
) {
2751 local
->scan_hw_mode
= list_entry(local
->scan_hw_mode
->list
.next
,
2752 struct ieee80211_hw_mode
,
2754 local
->scan_channel_idx
= 0;
2761 next_delay
= IEEE80211_PROBE_DELAY
+
2762 usecs_to_jiffies(local
->hw
.channel_change_time
);
2763 local
->scan_state
= SCAN_SEND_PROBE
;
2765 case SCAN_SEND_PROBE
:
2766 if (local
->scan_channel
->flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
) {
2767 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
2768 local
->scan_ssid_len
);
2769 next_delay
= IEEE80211_CHANNEL_TIME
;
2771 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
2772 local
->scan_state
= SCAN_SET_CHANNEL
;
2776 if (local
->sta_scanning
)
2777 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
2782 static int ieee80211_sta_start_scan(struct net_device
*dev
,
2783 u8
*ssid
, size_t ssid_len
)
2785 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2786 struct ieee80211_sub_if_data
*sdata
;
2788 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
2791 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
2792 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
2795 * ScanType: ACTIVE, PASSIVE
2796 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
2797 * a Probe frame during active scanning
2799 * MinChannelTime (>= ProbeDelay), in TU
2800 * MaxChannelTime: (>= MinChannelTime), in TU
2803 /* MLME-SCAN.confirm
2805 * ResultCode: SUCCESS, INVALID_PARAMETERS
2808 if (local
->sta_scanning
) {
2809 if (local
->scan_dev
== dev
)
2814 if (local
->ops
->hw_scan
) {
2815 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
2818 local
->sta_scanning
= 1;
2819 local
->scan_dev
= dev
;
2824 local
->sta_scanning
= 1;
2826 read_lock(&local
->sub_if_lock
);
2827 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
2829 /* Don't stop the master interface, otherwise we can't transmit
2831 if (sdata
->dev
== local
->mdev
)
2834 netif_stop_queue(sdata
->dev
);
2835 if (sdata
->type
== IEEE80211_IF_TYPE_STA
&&
2836 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
2837 ieee80211_send_nullfunc(local
, sdata
, 1);
2839 read_unlock(&local
->sub_if_lock
);
2842 local
->scan_ssid_len
= ssid_len
;
2843 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
2845 local
->scan_ssid_len
= 0;
2846 local
->scan_state
= SCAN_SET_CHANNEL
;
2847 local
->scan_hw_mode
= list_entry(local
->modes_list
.next
,
2848 struct ieee80211_hw_mode
,
2850 local
->scan_channel_idx
= 0;
2851 local
->scan_dev
= dev
;
2853 if (!(local
->hw
.flags
& IEEE80211_HW_NO_PROBE_FILTERING
) &&
2854 ieee80211_if_config(dev
))
2855 printk(KERN_DEBUG
"%s: failed to set BSSID for scan\n",
2858 /* TODO: start scan as soon as all nullfunc frames are ACKed */
2859 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
2860 IEEE80211_CHANNEL_TIME
);
2866 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
2868 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2869 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2870 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2872 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
2873 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
2875 if (local
->sta_scanning
) {
2876 if (local
->scan_dev
== dev
)
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 local
->mdev
->name
, 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);