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 "ieee80211_led.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 enum ParseRes
{ ParseOK
= 0, ParseUnknown
= 1, ParseFailed
= -1 };
113 static enum ParseRes
ieee802_11_parse_elems(u8
*start
, size_t len
,
114 struct ieee802_11_elems
*elems
)
120 memset(elems
, 0, sizeof(*elems
));
132 printk(KERN_DEBUG
"IEEE 802.11 element parse "
133 "failed (id=%d elen=%d left=%d)\n",
142 elems
->ssid_len
= elen
;
144 case WLAN_EID_SUPP_RATES
:
145 elems
->supp_rates
= pos
;
146 elems
->supp_rates_len
= elen
;
148 case WLAN_EID_FH_PARAMS
:
149 elems
->fh_params
= pos
;
150 elems
->fh_params_len
= elen
;
152 case WLAN_EID_DS_PARAMS
:
153 elems
->ds_params
= pos
;
154 elems
->ds_params_len
= elen
;
156 case WLAN_EID_CF_PARAMS
:
157 elems
->cf_params
= pos
;
158 elems
->cf_params_len
= elen
;
162 elems
->tim_len
= elen
;
164 case WLAN_EID_IBSS_PARAMS
:
165 elems
->ibss_params
= pos
;
166 elems
->ibss_params_len
= elen
;
168 case WLAN_EID_CHALLENGE
:
169 elems
->challenge
= pos
;
170 elems
->challenge_len
= elen
;
173 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
175 /* Microsoft OUI (00:50:F2) */
177 /* OUI Type 1 - WPA IE */
179 elems
->wpa_len
= elen
;
180 } else if (elen
>= 5 && pos
[3] == 2) {
182 elems
->wmm_info
= pos
;
183 elems
->wmm_info_len
= elen
;
184 } else if (pos
[4] == 1) {
185 elems
->wmm_param
= pos
;
186 elems
->wmm_param_len
= elen
;
193 elems
->rsn_len
= elen
;
195 case WLAN_EID_ERP_INFO
:
196 elems
->erp_info
= pos
;
197 elems
->erp_info_len
= elen
;
199 case WLAN_EID_EXT_SUPP_RATES
:
200 elems
->ext_supp_rates
= pos
;
201 elems
->ext_supp_rates_len
= elen
;
205 printk(KERN_DEBUG
"IEEE 802.11 element parse ignored "
206 "unknown element (id=%d elen=%d)\n",
217 /* Do not trigger error if left == 1 as Apple Airport base stations
218 * send AssocResps that are one spurious byte too long. */
220 return unknown
? ParseUnknown
: ParseOK
;
226 static int ecw2cw(int ecw
)
236 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
237 struct ieee80211_if_sta
*ifsta
,
238 u8
*wmm_param
, size_t wmm_param_len
)
240 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
241 struct ieee80211_tx_queue_params params
;
246 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
248 count
= wmm_param
[6] & 0x0f;
249 if (count
== ifsta
->wmm_last_param_set
)
251 ifsta
->wmm_last_param_set
= count
;
254 left
= wmm_param_len
- 8;
256 memset(¶ms
, 0, sizeof(params
));
258 if (!local
->ops
->conf_tx
)
262 for (; left
>= 4; left
-= 4, pos
+= 4) {
263 int aci
= (pos
[0] >> 5) & 0x03;
264 int acm
= (pos
[0] >> 4) & 0x01;
269 queue
= IEEE80211_TX_QUEUE_DATA3
;
271 local
->wmm_acm
|= BIT(0) | BIT(3);
275 queue
= IEEE80211_TX_QUEUE_DATA1
;
277 local
->wmm_acm
|= BIT(4) | BIT(5);
281 queue
= IEEE80211_TX_QUEUE_DATA0
;
283 local
->wmm_acm
|= BIT(6) | BIT(7);
288 queue
= IEEE80211_TX_QUEUE_DATA2
;
290 local
->wmm_acm
|= BIT(1) | BIT(2);
295 params
.aifs
= pos
[0] & 0x0f;
296 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
297 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
298 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
299 params
.burst_time
= (pos
[2] | (pos
[3] << 8)) * 32 / 100;
300 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
301 "cWmin=%d cWmax=%d burst=%d\n",
302 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
303 params
.cw_max
, params
.burst_time
);
304 /* TODO: handle ACM (block TX, fallback to next lowest allowed
306 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
307 printk(KERN_DEBUG
"%s: failed to set TX queue "
308 "parameters for queue %d\n", dev
->name
, queue
);
314 static void ieee80211_handle_erp_ie(struct net_device
*dev
, u8 erp_value
)
316 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
317 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
318 int use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
319 int preamble_mode
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) != 0;
322 if (use_protection
!= !!(sdata
->flags
& IEEE80211_SDATA_USE_PROTECTION
)) {
323 if (net_ratelimit()) {
324 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
327 use_protection
? "enabled" : "disabled",
328 MAC_ARG(ifsta
->bssid
));
331 sdata
->flags
|= IEEE80211_SDATA_USE_PROTECTION
;
333 sdata
->flags
&= ~IEEE80211_SDATA_USE_PROTECTION
;
334 changes
|= IEEE80211_ERP_CHANGE_PROTECTION
;
337 if (preamble_mode
!= !(sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
)) {
338 if (net_ratelimit()) {
339 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
340 " (BSSID=" MAC_FMT
")\n",
342 (preamble_mode
== WLAN_ERP_PREAMBLE_SHORT
) ?
344 MAC_ARG(ifsta
->bssid
));
347 sdata
->flags
&= ~IEEE80211_SDATA_SHORT_PREAMBLE
;
349 sdata
->flags
|= IEEE80211_SDATA_SHORT_PREAMBLE
;
350 changes
|= IEEE80211_ERP_CHANGE_PREAMBLE
;
354 ieee80211_erp_info_change_notify(dev
, changes
);
358 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
359 struct ieee80211_if_sta
*ifsta
)
364 union iwreq_data wrqu
;
366 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
369 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
370 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
374 len
= sprintf(buf
, "ASSOCINFO(");
375 if (ifsta
->assocreq_ies
) {
376 len
+= sprintf(buf
+ len
, "ReqIEs=");
377 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
378 len
+= sprintf(buf
+ len
, "%02x",
379 ifsta
->assocreq_ies
[i
]);
382 if (ifsta
->assocresp_ies
) {
383 if (ifsta
->assocreq_ies
)
384 len
+= sprintf(buf
+ len
, " ");
385 len
+= sprintf(buf
+ len
, "RespIEs=");
386 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
387 len
+= sprintf(buf
+ len
, "%02x",
388 ifsta
->assocresp_ies
[i
]);
391 len
+= sprintf(buf
+ len
, ")");
393 if (len
> IW_CUSTOM_MAX
) {
394 len
= sprintf(buf
, "ASSOCRESPIE=");
395 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
396 len
+= sprintf(buf
+ len
, "%02x",
397 ifsta
->assocresp_ies
[i
]);
401 memset(&wrqu
, 0, sizeof(wrqu
));
402 wrqu
.data
.length
= len
;
403 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
409 static void ieee80211_set_associated(struct net_device
*dev
,
410 struct ieee80211_if_sta
*ifsta
,
413 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
414 union iwreq_data wrqu
;
416 if (!!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) == assoc
)
420 struct ieee80211_sub_if_data
*sdata
;
421 struct ieee80211_sta_bss
*bss
;
423 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
425 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
426 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
429 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
431 if (bss
->has_erp_value
)
432 ieee80211_handle_erp_ie(dev
, bss
->erp_value
);
433 ieee80211_rx_bss_put(dev
, bss
);
436 netif_carrier_on(dev
);
437 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
438 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
439 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
440 ieee80211_sta_send_associnfo(dev
, ifsta
);
442 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
444 netif_carrier_off(dev
);
445 ieee80211_reset_erp_info(dev
);
446 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
448 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
449 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
450 ifsta
->last_probe
= jiffies
;
451 ieee80211_led_assoc(local
, assoc
);
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
;
479 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
485 static void ieee80211_send_auth(struct net_device
*dev
,
486 struct ieee80211_if_sta
*ifsta
,
487 int transaction
, u8
*extra
, size_t extra_len
,
490 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
492 struct ieee80211_mgmt
*mgmt
;
494 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
495 sizeof(*mgmt
) + 6 + extra_len
);
497 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
498 "frame\n", dev
->name
);
501 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
503 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
504 memset(mgmt
, 0, 24 + 6);
505 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
506 IEEE80211_STYPE_AUTH
);
508 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
509 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
510 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
511 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
512 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
513 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
514 ifsta
->auth_transaction
= transaction
+ 1;
515 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
517 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
519 ieee80211_sta_tx(dev
, skb
, encrypt
);
523 static void ieee80211_authenticate(struct net_device
*dev
,
524 struct ieee80211_if_sta
*ifsta
)
527 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
528 printk(KERN_DEBUG
"%s: authentication with AP " MAC_FMT
530 dev
->name
, MAC_ARG(ifsta
->bssid
));
531 ifsta
->state
= IEEE80211_DISABLED
;
535 ifsta
->state
= IEEE80211_AUTHENTICATE
;
536 printk(KERN_DEBUG
"%s: authenticate with AP " MAC_FMT
"\n",
537 dev
->name
, MAC_ARG(ifsta
->bssid
));
539 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
541 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
545 static void ieee80211_send_assoc(struct net_device
*dev
,
546 struct ieee80211_if_sta
*ifsta
)
548 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
549 struct ieee80211_hw_mode
*mode
;
551 struct ieee80211_mgmt
*mgmt
;
555 struct ieee80211_sta_bss
*bss
;
558 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
559 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
562 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
563 "frame\n", dev
->name
);
566 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
568 mode
= local
->oper_hw_mode
;
569 capab
= ifsta
->capab
;
570 if (mode
->mode
== MODE_IEEE80211G
) {
571 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
|
572 WLAN_CAPABILITY_SHORT_PREAMBLE
;
574 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
576 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
577 capab
|= WLAN_CAPABILITY_PRIVACY
;
581 ieee80211_rx_bss_put(dev
, bss
);
584 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
586 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
587 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
588 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
590 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
592 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
593 IEEE80211_STYPE_REASSOC_REQ
);
594 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
595 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
596 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
600 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
601 IEEE80211_STYPE_ASSOC_REQ
);
602 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
603 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
607 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
608 *pos
++ = WLAN_EID_SSID
;
609 *pos
++ = ifsta
->ssid_len
;
610 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
612 len
= mode
->num_rates
;
615 pos
= skb_put(skb
, len
+ 2);
616 *pos
++ = WLAN_EID_SUPP_RATES
;
618 for (i
= 0; i
< len
; i
++) {
619 int rate
= mode
->rates
[i
].rate
;
620 *pos
++ = (u8
) (rate
/ 5);
623 if (mode
->num_rates
> len
) {
624 pos
= skb_put(skb
, mode
->num_rates
- len
+ 2);
625 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
626 *pos
++ = mode
->num_rates
- len
;
627 for (i
= len
; i
< mode
->num_rates
; i
++) {
628 int rate
= mode
->rates
[i
].rate
;
629 *pos
++ = (u8
) (rate
/ 5);
633 if (ifsta
->extra_ie
) {
634 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
635 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
638 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
639 pos
= skb_put(skb
, 9);
640 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
641 *pos
++ = 7; /* len */
642 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
645 *pos
++ = 2; /* WME */
646 *pos
++ = 0; /* WME info */
647 *pos
++ = 1; /* WME ver */
651 kfree(ifsta
->assocreq_ies
);
652 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
653 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
654 if (ifsta
->assocreq_ies
)
655 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
657 ieee80211_sta_tx(dev
, skb
, 0);
661 static void ieee80211_send_deauth(struct net_device
*dev
,
662 struct ieee80211_if_sta
*ifsta
, u16 reason
)
664 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
666 struct ieee80211_mgmt
*mgmt
;
668 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
670 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
671 "frame\n", dev
->name
);
674 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
676 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
678 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
679 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
680 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
681 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
682 IEEE80211_STYPE_DEAUTH
);
684 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
686 ieee80211_sta_tx(dev
, skb
, 0);
690 static void ieee80211_send_disassoc(struct net_device
*dev
,
691 struct ieee80211_if_sta
*ifsta
, u16 reason
)
693 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
695 struct ieee80211_mgmt
*mgmt
;
697 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
699 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
700 "frame\n", dev
->name
);
703 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
705 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
707 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
708 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
709 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
710 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
711 IEEE80211_STYPE_DISASSOC
);
713 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
715 ieee80211_sta_tx(dev
, skb
, 0);
719 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
720 struct ieee80211_if_sta
*ifsta
)
722 struct ieee80211_sta_bss
*bss
;
725 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
) ||
726 ifsta
->key_management_enabled
)
729 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
733 if (ieee80211_sta_wep_configured(dev
) !=
734 !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
))
737 ieee80211_rx_bss_put(dev
, bss
);
743 static void ieee80211_associate(struct net_device
*dev
,
744 struct ieee80211_if_sta
*ifsta
)
746 ifsta
->assoc_tries
++;
747 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
748 printk(KERN_DEBUG
"%s: association with AP " MAC_FMT
750 dev
->name
, MAC_ARG(ifsta
->bssid
));
751 ifsta
->state
= IEEE80211_DISABLED
;
755 ifsta
->state
= IEEE80211_ASSOCIATE
;
756 printk(KERN_DEBUG
"%s: associate with AP " MAC_FMT
"\n",
757 dev
->name
, MAC_ARG(ifsta
->bssid
));
758 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
759 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
760 "mixed-cell disabled - abort association\n", dev
->name
);
761 ifsta
->state
= IEEE80211_DISABLED
;
765 ieee80211_send_assoc(dev
, ifsta
);
767 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
771 static void ieee80211_associated(struct net_device
*dev
,
772 struct ieee80211_if_sta
*ifsta
)
774 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
775 struct sta_info
*sta
;
778 /* TODO: start monitoring current AP signal quality and number of
779 * missed beacons. Scan other channels every now and then and search
781 /* TODO: remove expired BSSes */
783 ifsta
->state
= IEEE80211_ASSOCIATED
;
785 sta
= sta_info_get(local
, ifsta
->bssid
);
787 printk(KERN_DEBUG
"%s: No STA entry for own AP " MAC_FMT
"\n",
788 dev
->name
, MAC_ARG(ifsta
->bssid
));
792 if (time_after(jiffies
,
793 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
794 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
795 printk(KERN_DEBUG
"%s: No ProbeResp from "
796 "current AP " MAC_FMT
" - assume out of "
798 dev
->name
, MAC_ARG(ifsta
->bssid
));
802 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
804 local
->scan_ssid_len
);
805 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
807 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
808 if (time_after(jiffies
, ifsta
->last_probe
+
809 IEEE80211_PROBE_INTERVAL
)) {
810 ifsta
->last_probe
= jiffies
;
811 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
819 union iwreq_data wrqu
;
820 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
821 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
822 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
823 mod_timer(&ifsta
->timer
, jiffies
+
824 IEEE80211_MONITORING_INTERVAL
+ 30 * HZ
);
826 mod_timer(&ifsta
->timer
, jiffies
+
827 IEEE80211_MONITORING_INTERVAL
);
832 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
833 u8
*ssid
, size_t ssid_len
)
835 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
836 struct ieee80211_hw_mode
*mode
;
838 struct ieee80211_mgmt
*mgmt
;
839 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
842 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
844 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
845 "request\n", dev
->name
);
848 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
850 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
852 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
853 IEEE80211_STYPE_PROBE_REQ
);
854 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
856 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
857 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
859 memset(mgmt
->da
, 0xff, ETH_ALEN
);
860 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
862 pos
= skb_put(skb
, 2 + ssid_len
);
863 *pos
++ = WLAN_EID_SSID
;
865 memcpy(pos
, ssid
, ssid_len
);
867 supp_rates
= skb_put(skb
, 2);
868 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
870 mode
= local
->oper_hw_mode
;
871 for (i
= 0; i
< mode
->num_rates
; i
++) {
872 struct ieee80211_rate
*rate
= &mode
->rates
[i
];
873 if (!(rate
->flags
& IEEE80211_RATE_SUPPORTED
))
876 pos
= skb_put(skb
, 1);
878 } else if (supp_rates
[1] == 8) {
879 esupp_rates
= skb_put(skb
, 3);
880 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
882 pos
= &esupp_rates
[2];
884 pos
= skb_put(skb
, 1);
887 *pos
= rate
->rate
/ 5;
890 ieee80211_sta_tx(dev
, skb
, 0);
894 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
896 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
897 if (!sdata
|| !sdata
->default_key
||
898 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
904 static void ieee80211_auth_completed(struct net_device
*dev
,
905 struct ieee80211_if_sta
*ifsta
)
907 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
908 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
909 ieee80211_associate(dev
, ifsta
);
913 static void ieee80211_auth_challenge(struct net_device
*dev
,
914 struct ieee80211_if_sta
*ifsta
,
915 struct ieee80211_mgmt
*mgmt
,
919 struct ieee802_11_elems elems
;
921 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
922 pos
= mgmt
->u
.auth
.variable
;
923 if (ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
)
925 printk(KERN_DEBUG
"%s: failed to parse Auth(challenge)\n",
929 if (!elems
.challenge
) {
930 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
931 "frame\n", dev
->name
);
934 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
935 elems
.challenge_len
+ 2, 1);
939 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
940 struct ieee80211_if_sta
*ifsta
,
941 struct ieee80211_mgmt
*mgmt
,
944 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
945 u16 auth_alg
, auth_transaction
, status_code
;
947 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
948 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
949 printk(KERN_DEBUG
"%s: authentication frame received from "
950 MAC_FMT
", but not in authenticate state - ignored\n",
951 dev
->name
, MAC_ARG(mgmt
->sa
));
956 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
957 "received from " MAC_FMT
" - ignored\n",
958 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
962 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
963 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
964 printk(KERN_DEBUG
"%s: authentication frame received from "
965 "unknown AP (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
966 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
967 MAC_ARG(mgmt
->bssid
));
971 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
972 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
973 printk(KERN_DEBUG
"%s: authentication frame received from "
974 "unknown BSSID (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
975 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
976 MAC_ARG(mgmt
->bssid
));
980 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
981 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
982 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
984 printk(KERN_DEBUG
"%s: RX authentication from " MAC_FMT
" (alg=%d "
985 "transaction=%d status=%d)\n",
986 dev
->name
, MAC_ARG(mgmt
->sa
), auth_alg
,
987 auth_transaction
, status_code
);
989 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
990 /* IEEE 802.11 standard does not require authentication in IBSS
991 * networks and most implementations do not seem to use it.
992 * However, try to reply to authentication attempts if someone
993 * has actually implemented this.
994 * TODO: Could implement shared key authentication. */
995 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
996 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
997 "frame (alg=%d transaction=%d)\n",
998 dev
->name
, auth_alg
, auth_transaction
);
1001 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1004 if (auth_alg
!= ifsta
->auth_alg
||
1005 auth_transaction
!= ifsta
->auth_transaction
) {
1006 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1007 "(alg=%d transaction=%d)\n",
1008 dev
->name
, auth_alg
, auth_transaction
);
1012 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1013 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1014 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1015 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1017 const int num_algs
= ARRAY_SIZE(algs
);
1019 algs
[0] = algs
[1] = algs
[2] = 0xff;
1020 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1021 algs
[0] = WLAN_AUTH_OPEN
;
1022 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1023 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1024 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1025 algs
[2] = WLAN_AUTH_LEAP
;
1026 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1028 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1032 for (i
= 0; i
< num_algs
; i
++) {
1034 if (pos
>= num_algs
)
1036 if (algs
[pos
] == ifsta
->auth_alg
||
1039 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1040 !ieee80211_sta_wep_configured(dev
))
1042 ifsta
->auth_alg
= algs
[pos
];
1043 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1045 dev
->name
, ifsta
->auth_alg
);
1052 switch (ifsta
->auth_alg
) {
1053 case WLAN_AUTH_OPEN
:
1054 case WLAN_AUTH_LEAP
:
1055 ieee80211_auth_completed(dev
, ifsta
);
1057 case WLAN_AUTH_SHARED_KEY
:
1058 if (ifsta
->auth_transaction
== 4)
1059 ieee80211_auth_completed(dev
, ifsta
);
1061 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1067 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1068 struct ieee80211_if_sta
*ifsta
,
1069 struct ieee80211_mgmt
*mgmt
,
1075 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1076 "received from " MAC_FMT
" - ignored\n",
1077 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
1081 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1082 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1083 "unknown AP (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
1084 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
1085 MAC_ARG(mgmt
->bssid
));
1089 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1091 printk(KERN_DEBUG
"%s: RX deauthentication from " MAC_FMT
1093 dev
->name
, MAC_ARG(mgmt
->sa
), reason_code
);
1095 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1096 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1099 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1100 ifsta
->state
== IEEE80211_ASSOCIATE
||
1101 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1102 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1103 mod_timer(&ifsta
->timer
, jiffies
+
1104 IEEE80211_RETRY_AUTH_INTERVAL
);
1107 ieee80211_set_disassoc(dev
, ifsta
, 1);
1108 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1112 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1113 struct ieee80211_if_sta
*ifsta
,
1114 struct ieee80211_mgmt
*mgmt
,
1120 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1121 "received from " MAC_FMT
" - ignored\n",
1122 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
1126 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1127 printk(KERN_DEBUG
"%s: disassociation frame received from "
1128 "unknown AP (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
1129 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
1130 MAC_ARG(mgmt
->bssid
));
1134 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1136 printk(KERN_DEBUG
"%s: RX disassociation from " MAC_FMT
1138 dev
->name
, MAC_ARG(mgmt
->sa
), reason_code
);
1140 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1141 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1143 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1144 ifsta
->state
= IEEE80211_ASSOCIATE
;
1145 mod_timer(&ifsta
->timer
, jiffies
+
1146 IEEE80211_RETRY_AUTH_INTERVAL
);
1149 ieee80211_set_disassoc(dev
, ifsta
, 0);
1153 static void ieee80211_rx_mgmt_assoc_resp(struct net_device
*dev
,
1154 struct ieee80211_if_sta
*ifsta
,
1155 struct ieee80211_mgmt
*mgmt
,
1159 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1160 struct ieee80211_hw_mode
*mode
;
1161 struct sta_info
*sta
;
1163 u16 capab_info
, status_code
, aid
;
1164 struct ieee802_11_elems elems
;
1168 /* AssocResp and ReassocResp have identical structure, so process both
1169 * of them in this function. */
1171 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1172 printk(KERN_DEBUG
"%s: association frame received from "
1173 MAC_FMT
", but not in associate state - ignored\n",
1174 dev
->name
, MAC_ARG(mgmt
->sa
));
1179 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1180 "received from " MAC_FMT
" - ignored\n",
1181 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
1185 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1186 printk(KERN_DEBUG
"%s: association frame received from "
1187 "unknown AP (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
1188 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
1189 MAC_ARG(mgmt
->bssid
));
1193 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1194 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1195 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1196 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1197 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1198 "set\n", dev
->name
, aid
);
1199 aid
&= ~(BIT(15) | BIT(14));
1201 printk(KERN_DEBUG
"%s: RX %sssocResp from " MAC_FMT
" (capab=0x%x "
1202 "status=%d aid=%d)\n",
1203 dev
->name
, reassoc
? "Rea" : "A", MAC_ARG(mgmt
->sa
),
1204 capab_info
, status_code
, aid
);
1206 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1207 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1208 dev
->name
, status_code
);
1209 /* if this was a reassociation, ensure we try a "full"
1210 * association next time. This works around some broken APs
1211 * which do not correctly reject reassociation requests. */
1212 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1216 pos
= mgmt
->u
.assoc_resp
.variable
;
1217 if (ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
)
1219 printk(KERN_DEBUG
"%s: failed to parse AssocResp\n",
1224 if (!elems
.supp_rates
) {
1225 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1230 /* it probably doesn't, but if the frame includes an ERP value then
1231 * update our stored copy */
1232 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
1233 struct ieee80211_sta_bss
*bss
1234 = ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
1236 bss
->erp_value
= elems
.erp_info
[0];
1237 bss
->has_erp_value
= 1;
1238 ieee80211_rx_bss_put(dev
, bss
);
1242 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1244 ifsta
->ap_capab
= capab_info
;
1246 kfree(ifsta
->assocresp_ies
);
1247 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1248 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1249 if (ifsta
->assocresp_ies
)
1250 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1252 ieee80211_set_associated(dev
, ifsta
, 1);
1254 /* Add STA entry for the AP */
1255 sta
= sta_info_get(local
, ifsta
->bssid
);
1257 struct ieee80211_sta_bss
*bss
;
1258 sta
= sta_info_add(local
, dev
, ifsta
->bssid
, GFP_KERNEL
);
1260 printk(KERN_DEBUG
"%s: failed to add STA entry for the"
1261 " AP\n", dev
->name
);
1264 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
1266 sta
->last_rssi
= bss
->rssi
;
1267 sta
->last_signal
= bss
->signal
;
1268 sta
->last_noise
= bss
->noise
;
1269 ieee80211_rx_bss_put(dev
, bss
);
1274 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
;
1277 mode
= local
->oper_hw_mode
;
1278 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1279 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1280 for (j
= 0; j
< mode
->num_rates
; j
++)
1281 if (mode
->rates
[j
].rate
== rate
)
1284 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1285 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1286 for (j
= 0; j
< mode
->num_rates
; j
++)
1287 if (mode
->rates
[j
].rate
== rate
)
1290 sta
->supp_rates
= rates
;
1292 rate_control_rate_init(sta
, local
);
1294 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1295 sta
->flags
|= WLAN_STA_WME
;
1296 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1297 elems
.wmm_param_len
);
1303 ieee80211_associated(dev
, ifsta
);
1307 /* Caller must hold local->sta_bss_lock */
1308 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
1309 struct ieee80211_sta_bss
*bss
)
1311 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1312 bss
->hnext
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1313 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] = bss
;
1317 /* Caller must hold local->sta_bss_lock */
1318 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
1319 struct ieee80211_sta_bss
*bss
)
1321 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1322 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
1323 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1327 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
1330 prev
->hnext
= bss
->hnext
;
1339 static struct ieee80211_sta_bss
*
1340 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
)
1342 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1343 struct ieee80211_sta_bss
*bss
;
1345 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
1348 atomic_inc(&bss
->users
);
1349 atomic_inc(&bss
->users
);
1350 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
1352 spin_lock_bh(&local
->sta_bss_lock
);
1353 /* TODO: order by RSSI? */
1354 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
1355 __ieee80211_rx_bss_hash_add(dev
, bss
);
1356 spin_unlock_bh(&local
->sta_bss_lock
);
1361 static struct ieee80211_sta_bss
*
1362 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
)
1364 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1365 struct ieee80211_sta_bss
*bss
;
1367 spin_lock_bh(&local
->sta_bss_lock
);
1368 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
1370 if (memcmp(bss
->bssid
, bssid
, ETH_ALEN
) == 0) {
1371 atomic_inc(&bss
->users
);
1376 spin_unlock_bh(&local
->sta_bss_lock
);
1381 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
1390 static void ieee80211_rx_bss_put(struct net_device
*dev
,
1391 struct ieee80211_sta_bss
*bss
)
1393 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1394 if (!atomic_dec_and_test(&bss
->users
))
1397 spin_lock_bh(&local
->sta_bss_lock
);
1398 __ieee80211_rx_bss_hash_del(dev
, bss
);
1399 list_del(&bss
->list
);
1400 spin_unlock_bh(&local
->sta_bss_lock
);
1401 ieee80211_rx_bss_free(bss
);
1405 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
1407 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1408 spin_lock_init(&local
->sta_bss_lock
);
1409 INIT_LIST_HEAD(&local
->sta_bss_list
);
1413 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
1415 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1416 struct ieee80211_sta_bss
*bss
, *tmp
;
1418 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
1419 ieee80211_rx_bss_put(dev
, bss
);
1423 static void ieee80211_rx_bss_info(struct net_device
*dev
,
1424 struct ieee80211_mgmt
*mgmt
,
1426 struct ieee80211_rx_status
*rx_status
,
1429 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1430 struct ieee802_11_elems elems
;
1432 int channel
, invalid
= 0, clen
;
1433 struct ieee80211_sta_bss
*bss
;
1434 struct sta_info
*sta
;
1435 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1438 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
1439 return; /* ignore ProbeResp to foreign address */
1442 printk(KERN_DEBUG
"%s: RX %s from " MAC_FMT
" to " MAC_FMT
"\n",
1443 dev
->name
, beacon
? "Beacon" : "Probe Response",
1444 MAC_ARG(mgmt
->sa
), MAC_ARG(mgmt
->da
));
1447 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
1451 timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
1453 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
1454 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0) {
1455 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1456 static unsigned long last_tsf_debug
= 0;
1458 if (local
->ops
->get_tsf
)
1459 tsf
= local
->ops
->get_tsf(local_to_hw(local
));
1462 if (time_after(jiffies
, last_tsf_debug
+ 5 * HZ
)) {
1463 printk(KERN_DEBUG
"RX beacon SA=" MAC_FMT
" BSSID="
1464 MAC_FMT
" TSF=0x%llx BCN=0x%llx diff=%lld "
1466 MAC_ARG(mgmt
->sa
), MAC_ARG(mgmt
->bssid
),
1467 (unsigned long long)tsf
,
1468 (unsigned long long)timestamp
,
1469 (unsigned long long)(tsf
- timestamp
),
1471 last_tsf_debug
= jiffies
;
1473 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1476 if (ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
,
1477 &elems
) == ParseFailed
)
1480 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
1481 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
1482 (sta
= sta_info_get(local
, mgmt
->sa
))) {
1483 struct ieee80211_hw_mode
*mode
;
1484 struct ieee80211_rate
*rates
;
1486 u32 supp_rates
, prev_rates
;
1489 mode
= local
->sta_scanning
?
1490 local
->scan_hw_mode
: local
->oper_hw_mode
;
1491 rates
= mode
->rates
;
1492 num_rates
= mode
->num_rates
;
1495 for (i
= 0; i
< elems
.supp_rates_len
+
1496 elems
.ext_supp_rates_len
; i
++) {
1499 if (i
< elems
.supp_rates_len
)
1500 rate
= elems
.supp_rates
[i
];
1501 else if (elems
.ext_supp_rates
)
1502 rate
= elems
.ext_supp_rates
1503 [i
- elems
.supp_rates_len
];
1504 own_rate
= 5 * (rate
& 0x7f);
1505 for (j
= 0; j
< num_rates
; j
++)
1506 if (rates
[j
].rate
== own_rate
)
1507 supp_rates
|= BIT(j
);
1510 prev_rates
= sta
->supp_rates
;
1511 sta
->supp_rates
&= supp_rates
;
1512 if (sta
->supp_rates
== 0) {
1513 /* No matching rates - this should not really happen.
1514 * Make sure that at least one rate is marked
1515 * supported to avoid issues with TX rate ctrl. */
1516 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
1518 if (sta
->supp_rates
!= prev_rates
) {
1519 printk(KERN_DEBUG
"%s: updated supp_rates set for "
1520 MAC_FMT
" based on beacon info (0x%x & 0x%x -> "
1522 dev
->name
, MAC_ARG(sta
->addr
), prev_rates
,
1523 supp_rates
, sta
->supp_rates
);
1531 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
1532 channel
= elems
.ds_params
[0];
1534 channel
= rx_status
->channel
;
1536 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
);
1538 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
);
1543 /* TODO: order by RSSI? */
1544 spin_lock_bh(&local
->sta_bss_lock
);
1545 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
1546 spin_unlock_bh(&local
->sta_bss_lock
);
1550 if (bss
->probe_resp
&& beacon
) {
1551 /* Do not allow beacon to override data from Probe Response. */
1552 ieee80211_rx_bss_put(dev
, bss
);
1556 /* save the ERP value so that it is available at association time */
1557 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
1558 bss
->erp_value
= elems
.erp_info
[0];
1559 bss
->has_erp_value
= 1;
1562 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
1563 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
1564 if (elems
.ssid
&& elems
.ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
1565 memcpy(bss
->ssid
, elems
.ssid
, elems
.ssid_len
);
1566 bss
->ssid_len
= elems
.ssid_len
;
1569 bss
->supp_rates_len
= 0;
1570 if (elems
.supp_rates
) {
1571 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
1572 if (clen
> elems
.supp_rates_len
)
1573 clen
= elems
.supp_rates_len
;
1574 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
1576 bss
->supp_rates_len
+= clen
;
1578 if (elems
.ext_supp_rates
) {
1579 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
1580 if (clen
> elems
.ext_supp_rates_len
)
1581 clen
= elems
.ext_supp_rates_len
;
1582 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
1583 elems
.ext_supp_rates
, clen
);
1584 bss
->supp_rates_len
+= clen
;
1588 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
1589 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
1591 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
1593 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
1594 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
1596 bss
->wpa_ie_len
= 0;
1597 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
1600 bss
->wpa_ie_len
= 0;
1604 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
1605 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
1607 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
1609 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
1610 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
1612 bss
->rsn_ie_len
= 0;
1613 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
1616 bss
->rsn_ie_len
= 0;
1619 if (elems
.wmm_param
&&
1620 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
1621 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
1623 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
1625 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
1626 elems
.wmm_param_len
+ 2);
1627 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
1629 bss
->wmm_ie_len
= 0;
1630 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
1633 bss
->wmm_ie_len
= 0;
1637 bss
->hw_mode
= rx_status
->phymode
;
1638 bss
->channel
= channel
;
1639 bss
->freq
= rx_status
->freq
;
1640 if (channel
!= rx_status
->channel
&&
1641 (bss
->hw_mode
== MODE_IEEE80211G
||
1642 bss
->hw_mode
== MODE_IEEE80211B
) &&
1643 channel
>= 1 && channel
<= 14) {
1644 static const int freq_list
[] = {
1645 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1646 2447, 2452, 2457, 2462, 2467, 2472, 2484
1648 /* IEEE 802.11g/b mode can receive packets from neighboring
1649 * channels, so map the channel into frequency. */
1650 bss
->freq
= freq_list
[channel
- 1];
1652 bss
->timestamp
= timestamp
;
1653 bss
->last_update
= jiffies
;
1654 bss
->rssi
= rx_status
->ssi
;
1655 bss
->signal
= rx_status
->signal
;
1656 bss
->noise
= rx_status
->noise
;
1659 ieee80211_rx_bss_put(dev
, bss
);
1663 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
1664 struct ieee80211_mgmt
*mgmt
,
1666 struct ieee80211_rx_status
*rx_status
)
1668 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
1672 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
1673 struct ieee80211_mgmt
*mgmt
,
1675 struct ieee80211_rx_status
*rx_status
)
1677 struct ieee80211_sub_if_data
*sdata
;
1678 struct ieee80211_if_sta
*ifsta
;
1680 struct ieee802_11_elems elems
;
1682 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
1684 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1685 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
1687 ifsta
= &sdata
->u
.sta
;
1689 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
1690 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
1693 /* Process beacon from the current BSS */
1694 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
1698 if (ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
,
1699 &elems
) == ParseFailed
)
1702 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
1703 ieee80211_handle_erp_ie(dev
, elems
.erp_info
[0]);
1705 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1706 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1707 elems
.wmm_param_len
);
1712 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
1713 struct ieee80211_if_sta
*ifsta
,
1714 struct ieee80211_mgmt
*mgmt
,
1716 struct ieee80211_rx_status
*rx_status
)
1718 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1719 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1721 struct sk_buff
*skb
;
1722 struct ieee80211_mgmt
*resp
;
1725 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
||
1726 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
1727 len
< 24 + 2 || !ifsta
->probe_resp
)
1730 if (local
->ops
->tx_last_beacon
)
1731 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
1735 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1736 printk(KERN_DEBUG
"%s: RX ProbeReq SA=" MAC_FMT
" DA=" MAC_FMT
" BSSID="
1737 MAC_FMT
" (tx_last_beacon=%d)\n",
1738 dev
->name
, MAC_ARG(mgmt
->sa
), MAC_ARG(mgmt
->da
),
1739 MAC_ARG(mgmt
->bssid
), tx_last_beacon
);
1740 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1742 if (!tx_last_beacon
)
1745 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
1746 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
1749 end
= ((u8
*) mgmt
) + len
;
1750 pos
= mgmt
->u
.probe_req
.variable
;
1751 if (pos
[0] != WLAN_EID_SSID
||
1752 pos
+ 2 + pos
[1] > end
) {
1753 if (net_ratelimit()) {
1754 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
1755 "from " MAC_FMT
"\n",
1756 dev
->name
, MAC_ARG(mgmt
->sa
));
1761 (pos
[1] != ifsta
->ssid_len
||
1762 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
1763 /* Ignore ProbeReq for foreign SSID */
1767 /* Reply with ProbeResp */
1768 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
1772 resp
= (struct ieee80211_mgmt
*) skb
->data
;
1773 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
1774 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1775 printk(KERN_DEBUG
"%s: Sending ProbeResp to " MAC_FMT
"\n",
1776 dev
->name
, MAC_ARG(resp
->da
));
1777 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1778 ieee80211_sta_tx(dev
, skb
, 0);
1782 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
1783 struct ieee80211_rx_status
*rx_status
)
1785 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1786 struct ieee80211_sub_if_data
*sdata
;
1787 struct ieee80211_if_sta
*ifsta
;
1788 struct ieee80211_mgmt
*mgmt
;
1794 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1795 ifsta
= &sdata
->u
.sta
;
1797 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1798 fc
= le16_to_cpu(mgmt
->frame_control
);
1800 switch (fc
& IEEE80211_FCTL_STYPE
) {
1801 case IEEE80211_STYPE_PROBE_REQ
:
1802 case IEEE80211_STYPE_PROBE_RESP
:
1803 case IEEE80211_STYPE_BEACON
:
1804 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
1805 case IEEE80211_STYPE_AUTH
:
1806 case IEEE80211_STYPE_ASSOC_RESP
:
1807 case IEEE80211_STYPE_REASSOC_RESP
:
1808 case IEEE80211_STYPE_DEAUTH
:
1809 case IEEE80211_STYPE_DISASSOC
:
1810 skb_queue_tail(&ifsta
->skb_queue
, skb
);
1811 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
1814 printk(KERN_DEBUG
"%s: received unknown management frame - "
1815 "stype=%d\n", dev
->name
,
1816 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
1825 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
1826 struct sk_buff
*skb
)
1828 struct ieee80211_rx_status
*rx_status
;
1829 struct ieee80211_sub_if_data
*sdata
;
1830 struct ieee80211_if_sta
*ifsta
;
1831 struct ieee80211_mgmt
*mgmt
;
1834 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1835 ifsta
= &sdata
->u
.sta
;
1837 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
1838 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1839 fc
= le16_to_cpu(mgmt
->frame_control
);
1841 switch (fc
& IEEE80211_FCTL_STYPE
) {
1842 case IEEE80211_STYPE_PROBE_REQ
:
1843 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
1846 case IEEE80211_STYPE_PROBE_RESP
:
1847 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
1849 case IEEE80211_STYPE_BEACON
:
1850 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
1852 case IEEE80211_STYPE_AUTH
:
1853 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
1855 case IEEE80211_STYPE_ASSOC_RESP
:
1856 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 0);
1858 case IEEE80211_STYPE_REASSOC_RESP
:
1859 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 1);
1861 case IEEE80211_STYPE_DEAUTH
:
1862 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
1864 case IEEE80211_STYPE_DISASSOC
:
1865 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
1873 void ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
1874 struct ieee80211_rx_status
*rx_status
)
1876 struct ieee80211_mgmt
*mgmt
;
1879 if (skb
->len
< 24) {
1884 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1885 fc
= le16_to_cpu(mgmt
->frame_control
);
1887 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
1888 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
1889 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
1890 skb
->len
, rx_status
);
1891 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
1892 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
1901 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
1903 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1905 struct sta_info
*sta
;
1907 read_lock_bh(&local
->sta_lock
);
1908 list_for_each_entry(sta
, &local
->sta_list
, list
) {
1909 if (sta
->dev
== dev
&&
1910 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
1916 read_unlock_bh(&local
->sta_lock
);
1922 static void ieee80211_sta_expire(struct net_device
*dev
)
1924 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1925 struct sta_info
*sta
, *tmp
;
1926 LIST_HEAD(tmp_list
);
1928 write_lock_bh(&local
->sta_lock
);
1929 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
1930 if (time_after(jiffies
, sta
->last_rx
+
1931 IEEE80211_IBSS_INACTIVITY_LIMIT
)) {
1932 printk(KERN_DEBUG
"%s: expiring inactive STA " MAC_FMT
1933 "\n", dev
->name
, MAC_ARG(sta
->addr
));
1934 __sta_info_get(sta
);
1935 sta_info_remove(sta
);
1936 list_add(&sta
->list
, &tmp_list
);
1938 write_unlock_bh(&local
->sta_lock
);
1940 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
) {
1947 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
1948 struct ieee80211_if_sta
*ifsta
)
1950 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
1952 ieee80211_sta_expire(dev
);
1953 if (ieee80211_sta_active_ibss(dev
))
1956 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
1957 "IBSS networks with same SSID (merge)\n", dev
->name
);
1958 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
1962 void ieee80211_sta_timer(unsigned long data
)
1964 struct ieee80211_sub_if_data
*sdata
=
1965 (struct ieee80211_sub_if_data
*) data
;
1966 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1967 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
1969 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
1970 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
1974 void ieee80211_sta_work(struct work_struct
*work
)
1976 struct ieee80211_sub_if_data
*sdata
=
1977 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
1978 struct net_device
*dev
= sdata
->dev
;
1979 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1980 struct ieee80211_if_sta
*ifsta
;
1981 struct sk_buff
*skb
;
1983 if (!netif_running(dev
))
1986 if (local
->sta_scanning
)
1989 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
&&
1990 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
1991 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
1992 "(type=%d)\n", dev
->name
, sdata
->type
);
1995 ifsta
= &sdata
->u
.sta
;
1997 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
1998 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
2000 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
2001 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
2002 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
2003 ieee80211_sta_start_scan(dev
, NULL
, 0);
2007 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
2008 if (ieee80211_sta_config_auth(dev
, ifsta
))
2010 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2011 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
2014 switch (ifsta
->state
) {
2015 case IEEE80211_DISABLED
:
2017 case IEEE80211_AUTHENTICATE
:
2018 ieee80211_authenticate(dev
, ifsta
);
2020 case IEEE80211_ASSOCIATE
:
2021 ieee80211_associate(dev
, ifsta
);
2023 case IEEE80211_ASSOCIATED
:
2024 ieee80211_associated(dev
, ifsta
);
2026 case IEEE80211_IBSS_SEARCH
:
2027 ieee80211_sta_find_ibss(dev
, ifsta
);
2029 case IEEE80211_IBSS_JOINED
:
2030 ieee80211_sta_merge_ibss(dev
, ifsta
);
2033 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
2038 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
2039 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
2040 "mixed-cell disabled - disassociate\n", dev
->name
);
2042 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
2043 ieee80211_set_disassoc(dev
, ifsta
, 0);
2048 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
2049 struct ieee80211_if_sta
*ifsta
)
2051 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2053 if (local
->ops
->reset_tsf
) {
2054 /* Reset own TSF to allow time synchronization work. */
2055 local
->ops
->reset_tsf(local_to_hw(local
));
2058 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
2061 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
2062 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2063 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
2064 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
2065 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
2066 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
2068 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2069 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
2071 ifsta
->auth_transaction
= -1;
2072 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
2073 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
2074 netif_carrier_off(dev
);
2078 void ieee80211_sta_req_auth(struct net_device
*dev
,
2079 struct ieee80211_if_sta
*ifsta
)
2081 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2082 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2084 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
2087 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
2088 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
2089 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
2090 IEEE80211_STA_AUTO_SSID_SEL
))) {
2091 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2092 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2096 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
2097 const char *ssid
, int ssid_len
)
2099 int tmp
, hidden_ssid
;
2101 if (!memcmp(ifsta
->ssid
, ssid
, ssid_len
))
2104 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
2110 if (ssid
[tmp
] != '\0') {
2116 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
2119 if (ssid_len
== 1 && ssid
[0] == ' ')
2125 static int ieee80211_sta_config_auth(struct net_device
*dev
,
2126 struct ieee80211_if_sta
*ifsta
)
2128 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2129 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2130 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
2131 int top_rssi
= 0, freq
;
2133 if (!(ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
2134 IEEE80211_STA_AUTO_BSSID_SEL
| IEEE80211_STA_AUTO_CHANNEL_SEL
))) {
2135 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2136 ieee80211_sta_reset_auth(dev
, ifsta
);
2140 spin_lock_bh(&local
->sta_bss_lock
);
2141 freq
= local
->oper_channel
->freq
;
2142 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2143 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
2146 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
2147 !!sdata
->default_key
)
2150 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
2154 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
2155 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
2158 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
2159 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
2162 if (!selected
|| top_rssi
< bss
->rssi
) {
2164 top_rssi
= bss
->rssi
;
2168 atomic_inc(&selected
->users
);
2169 spin_unlock_bh(&local
->sta_bss_lock
);
2172 ieee80211_set_channel(local
, -1, selected
->freq
);
2173 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
2174 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
2175 selected
->ssid_len
);
2176 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
2177 ieee80211_rx_bss_put(dev
, selected
);
2178 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2179 ieee80211_sta_reset_auth(dev
, ifsta
);
2182 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
2183 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
2184 ieee80211_sta_start_scan(dev
, NULL
, 0);
2186 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
2188 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2189 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2191 ifsta
->state
= IEEE80211_DISABLED
;
2196 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2197 struct ieee80211_if_sta
*ifsta
,
2198 struct ieee80211_sta_bss
*bss
)
2200 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2201 int res
, rates
, i
, j
;
2202 struct sk_buff
*skb
;
2203 struct ieee80211_mgmt
*mgmt
;
2204 struct ieee80211_tx_control control
;
2205 struct ieee80211_rate
*rate
;
2206 struct ieee80211_hw_mode
*mode
;
2207 struct rate_control_extra extra
;
2209 struct ieee80211_sub_if_data
*sdata
;
2211 /* Remove possible STA entries from other IBSS networks. */
2212 sta_info_flush(local
, NULL
);
2214 if (local
->ops
->reset_tsf
) {
2215 /* Reset own TSF to allow time synchronization work. */
2216 local
->ops
->reset_tsf(local_to_hw(local
));
2218 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2219 res
= ieee80211_if_config(dev
);
2223 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2225 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2226 sdata
->drop_unencrypted
= bss
->capability
&
2227 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2229 res
= ieee80211_set_channel(local
, -1, bss
->freq
);
2231 if (!(local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)) {
2232 printk(KERN_DEBUG
"%s: IBSS not allowed on channel %d "
2233 "(%d MHz)\n", dev
->name
, local
->hw
.conf
.channel
,
2234 local
->hw
.conf
.freq
);
2238 /* Set beacon template based on scan results */
2239 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2244 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2246 mgmt
= (struct ieee80211_mgmt
*)
2247 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2248 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2249 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2250 IEEE80211_STYPE_BEACON
);
2251 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2252 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2253 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2254 mgmt
->u
.beacon
.beacon_int
=
2255 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2256 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2258 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2259 *pos
++ = WLAN_EID_SSID
;
2260 *pos
++ = ifsta
->ssid_len
;
2261 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2263 rates
= bss
->supp_rates_len
;
2266 pos
= skb_put(skb
, 2 + rates
);
2267 *pos
++ = WLAN_EID_SUPP_RATES
;
2269 memcpy(pos
, bss
->supp_rates
, rates
);
2271 pos
= skb_put(skb
, 2 + 1);
2272 *pos
++ = WLAN_EID_DS_PARAMS
;
2274 *pos
++ = bss
->channel
;
2276 pos
= skb_put(skb
, 2 + 2);
2277 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2279 /* FIX: set ATIM window based on scan results */
2283 if (bss
->supp_rates_len
> 8) {
2284 rates
= bss
->supp_rates_len
- 8;
2285 pos
= skb_put(skb
, 2 + rates
);
2286 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2288 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2291 memset(&control
, 0, sizeof(control
));
2292 memset(&extra
, 0, sizeof(extra
));
2293 extra
.mode
= local
->oper_hw_mode
;
2294 rate
= rate_control_get_rate(local
, dev
, skb
, &extra
);
2296 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2297 "for IBSS beacon\n", dev
->name
);
2301 ((sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
) &&
2302 (rate
->flags
& IEEE80211_RATE_PREAMBLE2
)) ?
2303 rate
->val2
: rate
->val
;
2304 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
2305 control
.power_level
= local
->hw
.conf
.power_level
;
2306 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
2307 control
.retry_limit
= 1;
2309 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
2310 if (ifsta
->probe_resp
) {
2311 mgmt
= (struct ieee80211_mgmt
*)
2312 ifsta
->probe_resp
->data
;
2313 mgmt
->frame_control
=
2314 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2315 IEEE80211_STYPE_PROBE_RESP
);
2317 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
2318 "template for IBSS\n", dev
->name
);
2321 if (local
->ops
->beacon_update
&&
2322 local
->ops
->beacon_update(local_to_hw(local
),
2323 skb
, &control
) == 0) {
2324 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
2325 "template based on scan results\n", dev
->name
);
2330 mode
= local
->oper_hw_mode
;
2331 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2332 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2333 for (j
= 0; j
< mode
->num_rates
; j
++)
2334 if (mode
->rates
[j
].rate
== bitrate
)
2337 ifsta
->supp_rates_bits
= rates
;
2341 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
2342 "template\n", dev
->name
);
2346 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2347 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2349 ieee80211_rx_bss_put(dev
, bss
);
2355 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
2356 struct ieee80211_if_sta
*ifsta
)
2358 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2359 struct ieee80211_sta_bss
*bss
;
2360 struct ieee80211_sub_if_data
*sdata
;
2361 struct ieee80211_hw_mode
*mode
;
2362 u8 bssid
[ETH_ALEN
], *pos
;
2366 /* Easier testing, use fixed BSSID. */
2367 memset(bssid
, 0xfe, ETH_ALEN
);
2369 /* Generate random, not broadcast, locally administered BSSID. Mix in
2370 * own MAC address to make sure that devices that do not have proper
2371 * random number generator get different BSSID. */
2372 get_random_bytes(bssid
, ETH_ALEN
);
2373 for (i
= 0; i
< ETH_ALEN
; i
++)
2374 bssid
[i
] ^= dev
->dev_addr
[i
];
2379 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID " MAC_FMT
"\n",
2380 dev
->name
, MAC_ARG(bssid
));
2382 bss
= ieee80211_rx_bss_add(dev
, bssid
);
2386 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2387 mode
= local
->oper_hw_mode
;
2389 if (local
->hw
.conf
.beacon_int
== 0)
2390 local
->hw
.conf
.beacon_int
= 100;
2391 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
2392 bss
->hw_mode
= local
->hw
.conf
.phymode
;
2393 bss
->channel
= local
->hw
.conf
.channel
;
2394 bss
->freq
= local
->hw
.conf
.freq
;
2395 bss
->last_update
= jiffies
;
2396 bss
->capability
= WLAN_CAPABILITY_IBSS
;
2397 if (sdata
->default_key
) {
2398 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
2400 sdata
->drop_unencrypted
= 0;
2401 bss
->supp_rates_len
= mode
->num_rates
;
2402 pos
= bss
->supp_rates
;
2403 for (i
= 0; i
< mode
->num_rates
; i
++) {
2404 int rate
= mode
->rates
[i
].rate
;
2405 *pos
++ = (u8
) (rate
/ 5);
2408 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2412 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
2413 struct ieee80211_if_sta
*ifsta
)
2415 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2416 struct ieee80211_sta_bss
*bss
;
2421 if (ifsta
->ssid_len
== 0)
2424 active_ibss
= ieee80211_sta_active_ibss(dev
);
2425 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2426 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
2427 dev
->name
, active_ibss
);
2428 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2429 spin_lock_bh(&local
->sta_bss_lock
);
2430 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2431 if (ifsta
->ssid_len
!= bss
->ssid_len
||
2432 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
2433 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
2435 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2436 printk(KERN_DEBUG
" bssid=" MAC_FMT
" found\n",
2437 MAC_ARG(bss
->bssid
));
2438 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2439 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
2441 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
2444 spin_unlock_bh(&local
->sta_bss_lock
);
2446 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2447 printk(KERN_DEBUG
" sta_find_ibss: selected " MAC_FMT
" current "
2448 MAC_FMT
"\n", MAC_ARG(bssid
), MAC_ARG(ifsta
->bssid
));
2449 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2450 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
2451 (bss
= ieee80211_rx_bss_get(dev
, bssid
))) {
2452 printk(KERN_DEBUG
"%s: Selected IBSS BSSID " MAC_FMT
2453 " based on configured SSID\n",
2454 dev
->name
, MAC_ARG(bssid
));
2455 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2457 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2458 printk(KERN_DEBUG
" did not try to join ibss\n");
2459 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2461 /* Selected IBSS not found in current scan results - try to scan */
2462 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
2463 !ieee80211_sta_active_ibss(dev
)) {
2464 mod_timer(&ifsta
->timer
, jiffies
+
2465 IEEE80211_IBSS_MERGE_INTERVAL
);
2466 } else if (time_after(jiffies
, local
->last_scan_completed
+
2467 IEEE80211_SCAN_INTERVAL
)) {
2468 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
2469 "join\n", dev
->name
);
2470 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
2472 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
2473 int interval
= IEEE80211_SCAN_INTERVAL
;
2475 if (time_after(jiffies
, ifsta
->ibss_join_req
+
2476 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
2477 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
2478 local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)
2479 return ieee80211_sta_create_ibss(dev
, ifsta
);
2480 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
2481 printk(KERN_DEBUG
"%s: IBSS not allowed on the"
2482 " configured channel %d (%d MHz)\n",
2483 dev
->name
, local
->hw
.conf
.channel
,
2484 local
->hw
.conf
.freq
);
2487 /* No IBSS found - decrease scan interval and continue
2489 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
2492 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
2493 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
2501 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
2503 struct ieee80211_sub_if_data
*sdata
;
2504 struct ieee80211_if_sta
*ifsta
;
2505 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2507 if (len
> IEEE80211_MAX_SSID_LEN
)
2510 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
2512 if (local
->ops
->conf_tx
) {
2513 struct ieee80211_tx_queue_params qparam
;
2516 memset(&qparam
, 0, sizeof(qparam
));
2517 /* TODO: are these ok defaults for all hw_modes? */
2520 local
->hw
.conf
.phymode
== MODE_IEEE80211B
? 31 : 15;
2521 qparam
.cw_max
= 1023;
2522 qparam
.burst_time
= 0;
2523 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
2525 local
->ops
->conf_tx(local_to_hw(local
),
2526 i
+ IEEE80211_TX_QUEUE_DATA0
,
2529 /* IBSS uses different parameters for Beacon sending */
2533 local
->ops
->conf_tx(local_to_hw(local
),
2534 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
2537 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2538 ifsta
= &sdata
->u
.sta
;
2540 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
2541 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
2542 memcpy(ifsta
->ssid
, ssid
, len
);
2543 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
2544 ifsta
->ssid_len
= len
;
2547 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
2549 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
2550 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&&
2551 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
2552 ifsta
->ibss_join_req
= jiffies
;
2553 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
2554 return ieee80211_sta_find_ibss(dev
, ifsta
);
2560 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
2562 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2563 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2564 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
2565 *len
= ifsta
->ssid_len
;
2570 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
2572 struct ieee80211_sub_if_data
*sdata
;
2573 struct ieee80211_if_sta
*ifsta
;
2576 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2577 ifsta
= &sdata
->u
.sta
;
2579 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
2580 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
2581 res
= ieee80211_if_config(dev
);
2583 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
2584 "the low-level driver\n", dev
->name
);
2589 if (is_valid_ether_addr(bssid
))
2590 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
2592 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
2598 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
2599 struct ieee80211_sub_if_data
*sdata
,
2602 struct sk_buff
*skb
;
2603 struct ieee80211_hdr
*nullfunc
;
2606 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
2608 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
2609 "frame\n", sdata
->dev
->name
);
2612 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2614 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
2615 memset(nullfunc
, 0, 24);
2616 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
2617 IEEE80211_FCTL_TODS
;
2619 fc
|= IEEE80211_FCTL_PM
;
2620 nullfunc
->frame_control
= cpu_to_le16(fc
);
2621 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
2622 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
2623 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
2625 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
2629 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
2631 struct ieee80211_local
*local
= hw_to_local(hw
);
2632 struct net_device
*dev
= local
->scan_dev
;
2633 struct ieee80211_sub_if_data
*sdata
;
2634 union iwreq_data wrqu
;
2636 local
->last_scan_completed
= jiffies
;
2638 local
->sta_scanning
= 0;
2640 if (ieee80211_hw_config(local
))
2641 printk(KERN_DEBUG
"%s: failed to restore operational"
2642 "channel after scan\n", dev
->name
);
2645 netif_tx_lock_bh(local
->mdev
);
2646 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
2647 local
->ops
->configure_filter(local_to_hw(local
),
2648 FIF_BCN_PRBRESP_PROMISC
,
2649 &local
->filter_flags
,
2650 local
->mdev
->mc_count
,
2651 local
->mdev
->mc_list
);
2653 netif_tx_unlock_bh(local
->mdev
);
2655 memset(&wrqu
, 0, sizeof(wrqu
));
2656 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
2659 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
2661 /* No need to wake the master device. */
2662 if (sdata
->dev
== local
->mdev
)
2665 if (sdata
->type
== IEEE80211_IF_TYPE_STA
) {
2666 if (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
2667 ieee80211_send_nullfunc(local
, sdata
, 0);
2668 ieee80211_sta_timer((unsigned long)sdata
);
2671 netif_wake_queue(sdata
->dev
);
2675 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2676 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
2677 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2678 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
2679 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
2680 !ieee80211_sta_active_ibss(dev
)))
2681 ieee80211_sta_find_ibss(dev
, ifsta
);
2684 EXPORT_SYMBOL(ieee80211_scan_completed
);
2686 void ieee80211_sta_scan_work(struct work_struct
*work
)
2688 struct ieee80211_local
*local
=
2689 container_of(work
, struct ieee80211_local
, scan_work
.work
);
2690 struct net_device
*dev
= local
->scan_dev
;
2691 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2692 struct ieee80211_hw_mode
*mode
;
2693 struct ieee80211_channel
*chan
;
2695 unsigned long next_delay
= 0;
2697 if (!local
->sta_scanning
)
2700 switch (local
->scan_state
) {
2701 case SCAN_SET_CHANNEL
:
2702 mode
= local
->scan_hw_mode
;
2703 if (local
->scan_hw_mode
->list
.next
== &local
->modes_list
&&
2704 local
->scan_channel_idx
>= mode
->num_channels
) {
2705 ieee80211_scan_completed(local_to_hw(local
));
2708 skip
= !(local
->enabled_modes
& (1 << mode
->mode
));
2709 chan
= &mode
->channels
[local
->scan_channel_idx
];
2710 if (!(chan
->flag
& IEEE80211_CHAN_W_SCAN
) ||
2711 (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&&
2712 !(chan
->flag
& IEEE80211_CHAN_W_IBSS
)) ||
2713 (local
->hw_modes
& local
->enabled_modes
&
2714 (1 << MODE_IEEE80211G
) && mode
->mode
== MODE_IEEE80211B
))
2719 printk(KERN_DEBUG
"%s: scan channel %d (%d MHz)\n",
2720 dev
->name
, chan
->chan
, chan
->freq
);
2723 local
->scan_channel
= chan
;
2724 if (ieee80211_hw_config(local
)) {
2725 printk(KERN_DEBUG
"%s: failed to set channel "
2726 "%d (%d MHz) for scan\n", dev
->name
,
2727 chan
->chan
, chan
->freq
);
2732 local
->scan_channel_idx
++;
2733 if (local
->scan_channel_idx
>= local
->scan_hw_mode
->num_channels
) {
2734 if (local
->scan_hw_mode
->list
.next
!= &local
->modes_list
) {
2735 local
->scan_hw_mode
= list_entry(local
->scan_hw_mode
->list
.next
,
2736 struct ieee80211_hw_mode
,
2738 local
->scan_channel_idx
= 0;
2745 next_delay
= IEEE80211_PROBE_DELAY
+
2746 usecs_to_jiffies(local
->hw
.channel_change_time
);
2747 local
->scan_state
= SCAN_SEND_PROBE
;
2749 case SCAN_SEND_PROBE
:
2750 if (local
->scan_channel
->flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
) {
2751 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
2752 local
->scan_ssid_len
);
2753 next_delay
= IEEE80211_CHANNEL_TIME
;
2755 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
2756 local
->scan_state
= SCAN_SET_CHANNEL
;
2760 if (local
->sta_scanning
)
2761 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
2766 static int ieee80211_sta_start_scan(struct net_device
*dev
,
2767 u8
*ssid
, size_t ssid_len
)
2769 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2770 struct ieee80211_sub_if_data
*sdata
;
2772 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
2775 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
2776 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
2779 * ScanType: ACTIVE, PASSIVE
2780 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
2781 * a Probe frame during active scanning
2783 * MinChannelTime (>= ProbeDelay), in TU
2784 * MaxChannelTime: (>= MinChannelTime), in TU
2787 /* MLME-SCAN.confirm
2789 * ResultCode: SUCCESS, INVALID_PARAMETERS
2792 if (local
->sta_scanning
) {
2793 if (local
->scan_dev
== dev
)
2798 if (local
->ops
->hw_scan
) {
2799 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
2802 local
->sta_scanning
= 1;
2803 local
->scan_dev
= dev
;
2808 local
->sta_scanning
= 1;
2811 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
2813 /* Don't stop the master interface, otherwise we can't transmit
2815 if (sdata
->dev
== local
->mdev
)
2818 netif_stop_queue(sdata
->dev
);
2819 if (sdata
->type
== IEEE80211_IF_TYPE_STA
&&
2820 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
2821 ieee80211_send_nullfunc(local
, sdata
, 1);
2826 local
->scan_ssid_len
= ssid_len
;
2827 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
2829 local
->scan_ssid_len
= 0;
2830 local
->scan_state
= SCAN_SET_CHANNEL
;
2831 local
->scan_hw_mode
= list_entry(local
->modes_list
.next
,
2832 struct ieee80211_hw_mode
,
2834 local
->scan_channel_idx
= 0;
2835 local
->scan_dev
= dev
;
2837 netif_tx_lock_bh(local
->mdev
);
2838 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
2839 local
->ops
->configure_filter(local_to_hw(local
),
2840 FIF_BCN_PRBRESP_PROMISC
,
2841 &local
->filter_flags
,
2842 local
->mdev
->mc_count
,
2843 local
->mdev
->mc_list
);
2844 netif_tx_unlock_bh(local
->mdev
);
2846 /* TODO: start scan as soon as all nullfunc frames are ACKed */
2847 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
2848 IEEE80211_CHANNEL_TIME
);
2854 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
2856 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2857 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2858 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2860 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
2861 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
2863 if (local
->sta_scanning
) {
2864 if (local
->scan_dev
== dev
)
2869 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
2870 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2875 ieee80211_sta_scan_result(struct net_device
*dev
,
2876 struct ieee80211_sta_bss
*bss
,
2877 char *current_ev
, char *end_buf
)
2879 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2880 struct iw_event iwe
;
2882 if (time_after(jiffies
,
2883 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
2886 if (!(local
->enabled_modes
& (1 << bss
->hw_mode
)))
2889 if (local
->scan_flags
& IEEE80211_SCAN_WPA_ONLY
&&
2890 !bss
->wpa_ie
&& !bss
->rsn_ie
)
2893 if (local
->scan_flags
& IEEE80211_SCAN_MATCH_SSID
&&
2894 (local
->scan_ssid_len
!= bss
->ssid_len
||
2895 memcmp(local
->scan_ssid
, bss
->ssid
, bss
->ssid_len
) != 0))
2898 memset(&iwe
, 0, sizeof(iwe
));
2899 iwe
.cmd
= SIOCGIWAP
;
2900 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
2901 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
2902 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2905 memset(&iwe
, 0, sizeof(iwe
));
2906 iwe
.cmd
= SIOCGIWESSID
;
2907 iwe
.u
.data
.length
= bss
->ssid_len
;
2908 iwe
.u
.data
.flags
= 1;
2909 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
2912 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)) {
2913 memset(&iwe
, 0, sizeof(iwe
));
2914 iwe
.cmd
= SIOCGIWMODE
;
2915 if (bss
->capability
& WLAN_CAPABILITY_ESS
)
2916 iwe
.u
.mode
= IW_MODE_MASTER
;
2918 iwe
.u
.mode
= IW_MODE_ADHOC
;
2919 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2923 memset(&iwe
, 0, sizeof(iwe
));
2924 iwe
.cmd
= SIOCGIWFREQ
;
2925 iwe
.u
.freq
.m
= bss
->channel
;
2927 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2929 iwe
.u
.freq
.m
= bss
->freq
* 100000;
2931 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2934 memset(&iwe
, 0, sizeof(iwe
));
2936 iwe
.u
.qual
.qual
= bss
->signal
;
2937 iwe
.u
.qual
.level
= bss
->rssi
;
2938 iwe
.u
.qual
.noise
= bss
->noise
;
2939 iwe
.u
.qual
.updated
= local
->wstats_flags
;
2940 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2943 memset(&iwe
, 0, sizeof(iwe
));
2944 iwe
.cmd
= SIOCGIWENCODE
;
2945 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
2946 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
2948 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
2949 iwe
.u
.data
.length
= 0;
2950 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
2952 if (bss
&& bss
->wpa_ie
) {
2953 memset(&iwe
, 0, sizeof(iwe
));
2954 iwe
.cmd
= IWEVGENIE
;
2955 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
2956 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
2960 if (bss
&& bss
->rsn_ie
) {
2961 memset(&iwe
, 0, sizeof(iwe
));
2962 iwe
.cmd
= IWEVGENIE
;
2963 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
2964 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
2968 if (bss
&& bss
->supp_rates_len
> 0) {
2969 /* display all supported rates in readable format */
2970 char *p
= current_ev
+ IW_EV_LCP_LEN
;
2973 memset(&iwe
, 0, sizeof(iwe
));
2974 iwe
.cmd
= SIOCGIWRATE
;
2975 /* Those two flags are ignored... */
2976 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
2978 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2979 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
2981 p
= iwe_stream_add_value(current_ev
, p
,
2982 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
2989 buf
= kmalloc(30, GFP_ATOMIC
);
2991 memset(&iwe
, 0, sizeof(iwe
));
2992 iwe
.cmd
= IWEVCUSTOM
;
2993 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
2994 iwe
.u
.data
.length
= strlen(buf
);
2995 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
3004 if (!(local
->scan_flags
& IEEE80211_SCAN_EXTRA_INFO
))
3007 buf
= kmalloc(100, GFP_ATOMIC
);
3011 memset(&iwe
, 0, sizeof(iwe
));
3012 iwe
.cmd
= IWEVCUSTOM
;
3013 sprintf(buf
, "bcn_int=%d", bss
->beacon_int
);
3014 iwe
.u
.data
.length
= strlen(buf
);
3015 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3018 memset(&iwe
, 0, sizeof(iwe
));
3019 iwe
.cmd
= IWEVCUSTOM
;
3020 sprintf(buf
, "capab=0x%04x", bss
->capability
);
3021 iwe
.u
.data
.length
= strlen(buf
);
3022 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3033 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
3035 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3036 char *current_ev
= buf
;
3037 char *end_buf
= buf
+ len
;
3038 struct ieee80211_sta_bss
*bss
;
3040 spin_lock_bh(&local
->sta_bss_lock
);
3041 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3042 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
3043 spin_unlock_bh(&local
->sta_bss_lock
);
3046 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
3049 spin_unlock_bh(&local
->sta_bss_lock
);
3050 return current_ev
- buf
;
3054 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
3056 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3057 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3058 kfree(ifsta
->extra_ie
);
3060 ifsta
->extra_ie
= NULL
;
3061 ifsta
->extra_ie_len
= 0;
3064 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
3065 if (!ifsta
->extra_ie
) {
3066 ifsta
->extra_ie_len
= 0;
3069 memcpy(ifsta
->extra_ie
, ie
, len
);
3070 ifsta
->extra_ie_len
= len
;
3075 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
3076 struct sk_buff
*skb
, u8
*bssid
,
3079 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3080 struct sta_info
*sta
;
3081 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3083 /* TODO: Could consider removing the least recently used entry and
3084 * allow new one to be added. */
3085 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
3086 if (net_ratelimit()) {
3087 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
3088 "entry " MAC_FMT
"\n", dev
->name
, MAC_ARG(addr
));
3093 printk(KERN_DEBUG
"%s: Adding new IBSS station " MAC_FMT
" (dev=%s)\n",
3094 wiphy_name(local
->hw
.wiphy
), MAC_ARG(addr
), dev
->name
);
3096 sta
= sta_info_add(local
, dev
, addr
, GFP_ATOMIC
);
3100 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
3102 rate_control_rate_init(sta
, local
);
3104 return sta
; /* caller will call sta_info_put() */
3108 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
3110 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3111 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3113 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
3116 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
&&
3117 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
)
3120 ieee80211_send_deauth(dev
, ifsta
, reason
);
3121 ieee80211_set_disassoc(dev
, ifsta
, 1);
3126 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
3128 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3129 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3131 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
3134 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
3137 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
3140 ieee80211_send_disassoc(dev
, ifsta
, reason
);
3141 ieee80211_set_disassoc(dev
, ifsta
, 0);