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 <linux/rtnetlink.h>
29 #include <net/iw_handler.h>
30 #include <asm/types.h>
32 #include <net/mac80211.h>
33 #include "ieee80211_i.h"
34 #include "ieee80211_rate.h"
35 #include "hostapd_ioctl.h"
37 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
38 #define IEEE80211_AUTH_MAX_TRIES 3
39 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
40 #define IEEE80211_ASSOC_MAX_TRIES 3
41 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
42 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
43 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
44 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
45 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
46 #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
48 #define IEEE80211_PROBE_DELAY (HZ / 33)
49 #define IEEE80211_CHANNEL_TIME (HZ / 33)
50 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
51 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
52 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
53 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
55 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
58 #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
60 #define ERP_INFO_USE_PROTECTION BIT(1)
62 /* mgmt header + 1 byte action code */
63 #define IEEE80211_MIN_ACTION_SIZE (24 + 1)
65 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
66 u8
*ssid
, size_t ssid_len
);
67 static struct ieee80211_sta_bss
*
68 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
);
69 static void ieee80211_rx_bss_put(struct net_device
*dev
,
70 struct ieee80211_sta_bss
*bss
);
71 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
72 struct ieee80211_if_sta
*ifsta
);
73 static int ieee80211_sta_wep_configured(struct net_device
*dev
);
74 static int ieee80211_sta_start_scan(struct net_device
*dev
,
75 u8
*ssid
, size_t ssid_len
);
76 static int ieee80211_sta_config_auth(struct net_device
*dev
,
77 struct ieee80211_if_sta
*ifsta
);
80 /* Parsed Information Elements */
81 struct ieee802_11_elems
{
107 u8 ht_extra_param_len
;
109 u8 ext_supp_rates_len
;
118 typedef enum { ParseOK
= 0, ParseUnknown
= 1, ParseFailed
= -1 } ParseRes
;
121 static ParseRes
ieee802_11_parse_elems(u8
*start
, size_t len
,
122 struct ieee802_11_elems
*elems
)
128 memset(elems
, 0, sizeof(*elems
));
140 printk(KERN_DEBUG
"IEEE 802.11 element parse "
141 "failed (id=%d elen=%d left=%d)\n",
150 elems
->ssid_len
= elen
;
152 case WLAN_EID_SUPP_RATES
:
153 elems
->supp_rates
= pos
;
154 elems
->supp_rates_len
= elen
;
156 case WLAN_EID_FH_PARAMS
:
157 elems
->fh_params
= pos
;
158 elems
->fh_params_len
= elen
;
160 case WLAN_EID_DS_PARAMS
:
161 elems
->ds_params
= pos
;
162 elems
->ds_params_len
= elen
;
164 case WLAN_EID_CF_PARAMS
:
165 elems
->cf_params
= pos
;
166 elems
->cf_params_len
= elen
;
170 elems
->tim_len
= elen
;
172 case WLAN_EID_IBSS_PARAMS
:
173 elems
->ibss_params
= pos
;
174 elems
->ibss_params_len
= elen
;
176 case WLAN_EID_CHALLENGE
:
177 elems
->challenge
= pos
;
178 elems
->challenge_len
= elen
;
181 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
183 /* Microsoft OUI (00:50:F2) */
184 if (pos
[3] == WIFI_OUI_TYPE_WPA
) {
185 /* OUI Type 1 - WPA IE */
187 elems
->wpa_len
= elen
;
188 } else if (elen
>= 5 &&
189 pos
[3] == WIFI_OUI_TYPE_WMM
) {
191 case WIFI_OUI_STYPE_WMM_INFO
:
192 elems
->wmm_info
= pos
;
193 elems
->wmm_info_len
= elen
;
195 case WIFI_OUI_STYPE_WMM_PARAM
:
196 elems
->wmm_param
= pos
;
197 elems
->wmm_param_len
= elen
;
199 case WIFI_OUI_STYPE_WMM_TSPEC
:
201 printk(KERN_ERR
"Wrong "
205 elems
->tspec
= pos
+ 6;
206 elems
->tspec_len
= elen
- 6;
209 //printk(KERN_ERR "Unsupported "
210 // "WiFi OUI %d\n", pos[4]);
218 elems
->rsn_len
= elen
;
220 case WLAN_EID_ERP_INFO
:
221 elems
->erp_info
= pos
;
222 elems
->erp_info_len
= elen
;
224 case WLAN_EID_EXT_SUPP_RATES
:
225 elems
->ext_supp_rates
= pos
;
226 elems
->ext_supp_rates_len
= elen
;
228 case WLAN_EID_HT_CAPABILITY
:
229 elems
->ht_cap_param
= pos
;
230 elems
->ht_cap_param_len
= elen
;
232 case WLAN_EID_HT_EXTRA_INFO
:
233 elems
->ht_extra_param
= pos
;
234 elems
->ht_extra_param_len
= elen
;
238 printk(KERN_ERR
"Wrong TSPEC size.\n");
242 elems
->tspec_len
= elen
;
246 printk(KERN_DEBUG
"IEEE 802.11 element parse ignored "
247 "unknown element (id=%d elen=%d)\n",
258 /* Do not trigger error if left == 1 as Apple Airport base stations
259 * send AssocResps that are one spurious byte too long. */
261 return unknown
? ParseUnknown
: ParseOK
;
267 static int ecw2cw(int ecw
)
277 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
278 struct ieee80211_if_sta
*ifsta
,
279 u8
*wmm_param
, size_t wmm_param_len
)
281 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
282 struct ieee80211_tx_queue_params params
;
287 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
289 count
= wmm_param
[6] & 0x0f;
290 if (count
== ifsta
->wmm_last_param_set
)
292 ifsta
->wmm_last_param_set
= count
;
295 left
= wmm_param_len
- 8;
297 memset(¶ms
, 0, sizeof(params
));
299 if (!local
->ops
->conf_tx
)
303 for (; left
>= 4; left
-= 4, pos
+= 4) {
304 int aci
= (pos
[0] >> 5) & 0x03;
305 int acm
= (pos
[0] >> 4) & 0x01;
310 queue
= IEEE80211_TX_QUEUE_DATA3
;
312 local
->wmm_acm
|= BIT(0) | BIT(3);
316 queue
= IEEE80211_TX_QUEUE_DATA1
;
318 local
->wmm_acm
|= BIT(4) | BIT(5);
322 queue
= IEEE80211_TX_QUEUE_DATA0
;
324 local
->wmm_acm
|= BIT(6) | BIT(7);
329 queue
= IEEE80211_TX_QUEUE_DATA2
;
331 local
->wmm_acm
|= BIT(1) | BIT(2);
336 params
.aifs
= pos
[0] & 0x0f;
337 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
338 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
339 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
340 params
.burst_time
= (pos
[2] | (pos
[3] << 8)) * 32 / 100;
341 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
342 "cWmin=%d cWmax=%d burst=%d\n",
343 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
344 params
.cw_max
, params
.burst_time
);
345 /* TODO: handle ACM (block TX, fallback to next lowest allowed
347 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
348 printk(KERN_DEBUG
"%s: failed to set TX queue "
349 "parameters for queue %d\n", dev
->name
, queue
);
355 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
356 struct ieee80211_if_sta
*ifsta
)
361 union iwreq_data wrqu
;
363 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
366 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
367 ifsta
->assocresp_ies_len
), GFP_ATOMIC
);
371 len
= sprintf(buf
, "ASSOCINFO(");
372 if (ifsta
->assocreq_ies
) {
373 len
+= sprintf(buf
+ len
, "ReqIEs=");
374 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
375 len
+= sprintf(buf
+ len
, "%02x",
376 ifsta
->assocreq_ies
[i
]);
379 if (ifsta
->assocresp_ies
) {
380 if (ifsta
->assocreq_ies
)
381 len
+= sprintf(buf
+ len
, " ");
382 len
+= sprintf(buf
+ len
, "RespIEs=");
383 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
384 len
+= sprintf(buf
+ len
, "%02x",
385 ifsta
->assocresp_ies
[i
]);
388 len
+= sprintf(buf
+ len
, ")");
390 if (len
> IW_CUSTOM_MAX
) {
391 len
= sprintf(buf
, "ASSOCRESPIE=");
392 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
393 len
+= sprintf(buf
+ len
, "%02x",
394 ifsta
->assocresp_ies
[i
]);
398 memset(&wrqu
, 0, sizeof(wrqu
));
399 wrqu
.data
.length
= len
;
400 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
406 static void ieee80211_set_associated(struct net_device
*dev
,
407 struct ieee80211_if_sta
*ifsta
, int assoc
)
409 union iwreq_data wrqu
;
411 if (ifsta
->associated
== assoc
)
414 ifsta
->associated
= assoc
;
417 struct ieee80211_sub_if_data
*sdata
;
418 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
419 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
421 netif_carrier_on(dev
);
422 ifsta
->prev_bssid_set
= 1;
423 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
424 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
425 ieee80211_sta_send_associnfo(dev
, ifsta
);
427 netif_carrier_off(dev
);
428 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
430 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
431 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
432 ifsta
->last_probe
= jiffies
;
435 static void ieee80211_set_disassoc(struct net_device
*dev
,
436 struct ieee80211_if_sta
*ifsta
, int deauth
)
439 ifsta
->auth_tries
= 0;
440 ifsta
->assoc_tries
= 0;
441 ieee80211_set_associated(dev
, ifsta
, 0);
444 static void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
447 struct ieee80211_sub_if_data
*sdata
;
448 struct ieee80211_tx_packet_data
*pkt_data
;
450 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
451 skb
->dev
= sdata
->local
->mdev
;
452 skb_set_mac_header(skb
, 0);
453 skb_set_network_header(skb
, 0);
454 skb_set_transport_header(skb
, 0);
456 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
457 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
458 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
459 pkt_data
->mgmt_iface
= (sdata
->type
== IEEE80211_IF_TYPE_MGMT
);
460 pkt_data
->do_not_encrypt
= !encrypt
;
466 static void ieee80211_send_auth(struct net_device
*dev
,
467 struct ieee80211_if_sta
*ifsta
,
468 int transaction
, u8
*extra
, size_t extra_len
,
471 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
473 struct ieee80211_mgmt
*mgmt
;
475 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
476 sizeof(*mgmt
) + 6 + extra_len
);
478 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
479 "frame\n", dev
->name
);
482 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
484 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
485 memset(mgmt
, 0, 24 + 6);
486 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
487 IEEE80211_STYPE_AUTH
);
489 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
490 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
491 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
492 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
493 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
494 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
495 ifsta
->auth_transaction
= transaction
+ 1;
496 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
498 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
500 ieee80211_sta_tx(dev
, skb
, encrypt
);
504 static void ieee80211_authenticate(struct net_device
*dev
,
505 struct ieee80211_if_sta
*ifsta
)
508 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
509 printk(KERN_DEBUG
"%s: authentication with AP " MAC_FMT
511 dev
->name
, MAC_ARG(ifsta
->bssid
));
512 ifsta
->state
= IEEE80211_DISABLED
;
516 ifsta
->state
= IEEE80211_AUTHENTICATE
;
517 printk(KERN_DEBUG
"%s: authenticate with AP " MAC_FMT
"\n",
518 dev
->name
, MAC_ARG(ifsta
->bssid
));
520 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
522 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
526 static void ieee80211_send_assoc(struct net_device
*dev
,
527 struct ieee80211_if_sta
*ifsta
)
529 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
530 struct ieee80211_hw_mode
*mode
;
532 struct ieee80211_mgmt
*mgmt
;
536 struct ieee80211_sta_bss
*bss
;
540 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
541 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
544 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
545 "frame\n", dev
->name
);
548 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
550 mode
= local
->oper_hw_mode
;
551 capab
= ifsta
->capab
;
552 if (mode
->mode
== MODE_IEEE80211G
) {
553 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
|
554 WLAN_CAPABILITY_SHORT_PREAMBLE
;
556 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
558 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
559 capab
|= WLAN_CAPABILITY_PRIVACY
;
565 ieee80211_rx_bss_put(dev
, bss
);
568 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
570 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
571 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
572 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
574 if (ifsta
->prev_bssid_set
) {
576 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
577 IEEE80211_STYPE_REASSOC_REQ
);
578 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
579 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
580 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
584 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
585 IEEE80211_STYPE_ASSOC_REQ
);
586 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
587 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
591 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
592 *pos
++ = WLAN_EID_SSID
;
593 *pos
++ = ifsta
->ssid_len
;
594 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
596 len
= mode
->num_rates
;
599 pos
= skb_put(skb
, len
+ 2);
600 *pos
++ = WLAN_EID_SUPP_RATES
;
602 for (i
= 0; i
< len
; i
++) {
603 int rate
= mode
->rates
[i
].rate
;
604 if (mode
->mode
== MODE_ATHEROS_TURBO
)
606 *pos
++ = (u8
) (rate
/ 5);
609 if (mode
->num_rates
> len
) {
610 pos
= skb_put(skb
, mode
->num_rates
- len
+ 2);
611 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
612 *pos
++ = mode
->num_rates
- len
;
613 for (i
= len
; i
< mode
->num_rates
; i
++) {
614 int rate
= mode
->rates
[i
].rate
;
615 if (mode
->mode
== MODE_ATHEROS_TURBO
)
617 *pos
++ = (u8
) (rate
/ 5);
621 if (ifsta
->extra_ie
) {
622 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
623 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
626 if (wmm
&& ifsta
->wmm_enabled
) {
627 pos
= skb_put(skb
, 9);
628 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
629 *pos
++ = 7; /* len */
630 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
633 *pos
++ = 2; /* WME */
634 *pos
++ = 0; /* WME info */
635 *pos
++ = 1; /* WME ver */
639 /* if low level driver supports 11n, fill in 11n IE */
640 if (ht_enabled
&& ifsta
->ht_enabled
&& local
->ops
->get_ht_capab
) {
641 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_capability
)+2);
642 *pos
++ = WLAN_EID_HT_CAPABILITY
;
643 *pos
++ = sizeof(struct ieee80211_ht_capability
);
644 memset(pos
, 0, sizeof(struct ieee80211_ht_capability
));
645 local
->ops
->get_ht_capab(local_to_hw(local
),
646 (struct ieee80211_ht_capability
*)pos
);
649 kfree(ifsta
->assocreq_ies
);
650 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
651 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_ATOMIC
);
652 if (ifsta
->assocreq_ies
)
653 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
655 ieee80211_sta_tx(dev
, skb
, 0);
659 static void ieee80211_send_deauth(struct net_device
*dev
,
660 struct ieee80211_if_sta
*ifsta
, u16 reason
)
662 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
664 struct ieee80211_mgmt
*mgmt
;
666 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
668 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
669 "frame\n", dev
->name
);
672 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
674 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
676 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
677 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
678 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
679 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
680 IEEE80211_STYPE_DEAUTH
);
682 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
684 ieee80211_sta_tx(dev
, skb
, 0);
688 static void ieee80211_send_disassoc(struct net_device
*dev
,
689 struct ieee80211_if_sta
*ifsta
, u16 reason
)
691 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
693 struct ieee80211_mgmt
*mgmt
;
695 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
697 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
698 "frame\n", dev
->name
);
701 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
703 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
705 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
706 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
707 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
708 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
709 IEEE80211_STYPE_DISASSOC
);
711 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
713 ieee80211_sta_tx(dev
, skb
, 0);
717 int ieee80211_ts_index(u8 direction
)
719 if (direction
== WLAN_TSINFO_DOWNLINK
||
720 direction
== WLAN_TSINFO_DIRECTLINK
)
721 return STA_TS_DOWNLINK
;
722 return STA_TS_UPLINK
; /* UP and Bidirectional LINK */
726 void ieee80211_send_addts(struct net_device
*dev
,
727 struct ieee80211_if_sta
*ifsta
,
728 struct ieee80211_elem_tspec
*tspec
)
730 struct ieee80211_mgmt
*mgmt
;
733 struct ieee80211_elem_tspec
*ptspec
;
736 skb
= dev_alloc_skb(sizeof(*mgmt
) + sizeof(*tspec
));
738 printk(KERN_DEBUG
"%s: failed to allocate buffer for addts "
739 "frame\n", dev
->name
);
743 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
745 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
746 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
747 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
748 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
749 IEEE80211_STYPE_ACTION
);
751 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addts_req
));
752 mgmt
->u
.action
.category
= WLAN_CATEGORY_QOS
;
753 mgmt
->u
.action
.u
.addts_req
.action_code
= WLAN_ACTION_QOS_ADDTS_REQ
;
754 mgmt
->u
.action
.u
.addts_req
.dialog_token
= ++token
% 127;
756 skb_put(skb
, 2 + sizeof(*tspec
));
757 pos
= mgmt
->u
.action
.u
.addts_req
.variable
;
758 pos
[0] = WLAN_EID_TSPEC
;
759 pos
[1] = sizeof(*tspec
);
761 ptspec
= (struct ieee80211_elem_tspec
*)pos
;
762 memcpy(ptspec
, tspec
, sizeof(*tspec
));
764 ieee80211_sta_tx(dev
, skb
, 0);
768 void wmm_send_addts(struct net_device
*dev
,
769 struct ieee80211_if_sta
*ifsta
,
770 struct ieee80211_elem_tspec
*tspec
)
772 struct ieee80211_mgmt
*mgmt
;
775 struct ieee80211_elem_tspec
*ptspec
;
778 skb
= dev_alloc_skb(sizeof(*mgmt
) + 2 + 6 + sizeof(*tspec
));
780 printk(KERN_DEBUG
"%s: failed to allocate buffer for addts "
781 "frame\n", dev
->name
);
785 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
787 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
788 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
789 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
790 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
791 IEEE80211_STYPE_ACTION
);
793 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.wme_action
));
794 mgmt
->u
.action
.category
= WLAN_CATEGORY_WMM
;
795 mgmt
->u
.action
.u
.wme_action
.action_code
= WLAN_ACTION_QOS_ADDTS_REQ
;
796 mgmt
->u
.action
.u
.wme_action
.dialog_token
= ++token
% 127;
797 mgmt
->u
.action
.u
.wme_action
.status_code
= 0;
799 skb_put(skb
, 2 + 6 + sizeof(*tspec
));
800 pos
= mgmt
->u
.action
.u
.wme_action
.variable
;
801 pos
[0] = WLAN_EID_GENERIC
;
804 pos
[0] = 0x00; pos
[1] = 0x50; pos
[2] = 0xf2; /* Wi-Fi OUI (00:50:F2)*/
806 pos
[0] = WIFI_OUI_TYPE_WMM
;
807 pos
[1] = WIFI_OUI_STYPE_WMM_TSPEC
;
808 pos
[2] = 1; /* Version */
810 ptspec
= (struct ieee80211_elem_tspec
*)pos
;
811 memcpy(ptspec
, tspec
, sizeof(*tspec
));
813 ieee80211_sta_tx(dev
, skb
, 0);
817 void ieee80211_send_delts(struct net_device
*dev
,
818 struct ieee80211_if_sta
*ifsta
,
819 struct ieee80211_elem_tspec
*tp
)
821 struct ieee80211_mgmt
*mgmt
;
823 u8 tsid
= IEEE80211_TSINFO_TSID(tp
->ts_info
);
824 u8 direction
= IEEE80211_TSINFO_DIR(tp
->ts_info
);
825 u32 medium_time
= tp
->medium_time
;
826 u8 index
= ieee80211_ts_index(direction
);
828 if (ifsta
->ts_data
[tsid
][index
].status
== TS_STATUS_UNUSED
) {
829 printk(KERN_DEBUG
"%s: Tring to delete an ACM disabled TS "
830 "(%u:%u)\n", dev
->name
, tsid
, direction
);
833 skb
= dev_alloc_skb(sizeof(*mgmt
));
835 printk(KERN_DEBUG
"%s: failed to allocate buffer for delts "
836 "frame\n", dev
->name
);
840 /* recompute admitted time */
841 ifsta
->ts_data
[tsid
][index
].admitted_time_usec
-=
842 ifsta
->dot11EDCAAveragingPeriod
* medium_time
* 32;
843 if ((s32
)(ifsta
->ts_data
[tsid
][index
].admitted_time_usec
) < 0)
844 ifsta
->ts_data
[tsid
][index
].admitted_time_usec
= 0;
846 ifsta
->ts_data
[tsid
][index
].status
= TS_STATUS_INACTIVE
;
848 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
850 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
851 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
852 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
853 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
854 IEEE80211_STYPE_ACTION
);
855 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.delts
));
856 mgmt
->u
.action
.category
= WLAN_CATEGORY_QOS
;
857 mgmt
->u
.action
.u
.delts
.action_code
= WLAN_ACTION_QOS_DELTS
;
858 mgmt
->u
.action
.u
.delts
.reason_code
= 0;
859 memset(&mgmt
->u
.action
.u
.delts
.ts_info
, 0,
860 sizeof(struct ieee80211_ts_info
));
862 SET_TSINFO_TSID(tp
->ts_info
, tsid
);
863 SET_TSINFO_DIR(tp
->ts_info
, direction
);
864 SET_TSINFO_POLICY(tp
->ts_info
, WLAN_TSINFO_EDCA
);
865 SET_TSINFO_APSD(tp
->ts_info
, WLAN_TSINFO_PSB_LEGACY
);
866 SET_TSINFO_UP(tp
->ts_info
, ifsta
->ts_data
[tsid
][index
].up
);
868 ieee80211_sta_tx(dev
, skb
, 0);
872 void wmm_send_delts(struct net_device
*dev
,
873 struct ieee80211_if_sta
*ifsta
,
874 struct ieee80211_elem_tspec
*tp
)
876 struct ieee80211_mgmt
*mgmt
;
877 struct ieee80211_elem_tspec
*tspec
;
879 u8 tsid
= IEEE80211_TSINFO_TSID(tp
->ts_info
);
880 u8 direction
= IEEE80211_TSINFO_DIR(tp
->ts_info
);
881 u32 medium_time
= tp
->medium_time
;
882 u8 index
= ieee80211_ts_index(direction
);
885 if (ifsta
->ts_data
[tsid
][index
].status
== TS_STATUS_UNUSED
) {
886 printk(KERN_DEBUG
"%s: Tring to delete a non-Actived TS "
887 "(%u %u)\n", dev
->name
, tsid
, direction
);
890 skb
= dev_alloc_skb(sizeof(*mgmt
) + 2 + 6 + sizeof(*tspec
));
892 printk(KERN_DEBUG
"%s: failed to allocate buffer for delts "
893 "frame\n", dev
->name
);
897 /* recompute admitted time */
898 ifsta
->ts_data
[tsid
][index
].admitted_time_usec
-=
899 ifsta
->dot11EDCAAveragingPeriod
* medium_time
* 32;
900 if ((s32
)(ifsta
->ts_data
[tsid
][index
].admitted_time_usec
< 0))
901 ifsta
->ts_data
[tsid
][index
].admitted_time_usec
= 0;
903 ifsta
->ts_data
[tsid
][index
].status
= TS_STATUS_INACTIVE
;
905 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
907 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
908 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
909 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
910 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
911 IEEE80211_STYPE_ACTION
);
913 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.wme_action
));
914 mgmt
->u
.action
.category
= WLAN_CATEGORY_WMM
;
915 mgmt
->u
.action
.u
.wme_action
.action_code
= WLAN_ACTION_QOS_DELTS
;
916 mgmt
->u
.action
.u
.wme_action
.dialog_token
= 0;
917 mgmt
->u
.action
.u
.wme_action
.status_code
= 0;
919 skb_put(skb
, 2 + 6 + sizeof(*tspec
));
920 pos
= mgmt
->u
.action
.u
.wme_action
.variable
;
921 pos
[0] = WLAN_EID_GENERIC
;
924 pos
[0] = 0x00; pos
[1] = 0x50; pos
[2] = 0xf2; /* Wi-Fi OUI (00:50:F2)*/
926 pos
[0] = WIFI_OUI_TYPE_WMM
;
927 pos
[1] = WIFI_OUI_STYPE_WMM_TSPEC
;
928 pos
[2] = 1; /* Version */
930 tspec
= (struct ieee80211_elem_tspec
*)pos
;
931 memset(tspec
, 0, sizeof(*tspec
));
933 SET_TSINFO_TSID(tspec
->ts_info
, tsid
);
934 SET_TSINFO_DIR(tspec
->ts_info
, direction
);
935 SET_TSINFO_POLICY(tspec
->ts_info
, WLAN_TSINFO_EDCA
);
936 SET_TSINFO_APSD(tspec
->ts_info
, WLAN_TSINFO_PSB_LEGACY
);
937 SET_TSINFO_UP(tspec
->ts_info
, ifsta
->ts_data
[tsid
][index
].up
);
939 ieee80211_sta_tx(dev
, skb
, 0);
943 void ieee80211_send_dls_req(struct net_device
*dev
,
944 struct ieee80211_if_sta
*ifsta
,
945 u8
*addr
, u32 timeout
)
947 struct ieee80211_hw_mode
*mode
;
949 struct ieee80211_mgmt
*mgmt
;
950 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
951 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
954 skb
= dev_alloc_skb(sizeof(*mgmt
) + 200 /* rates + ext_rates Size */);
956 printk(KERN_DEBUG
"%s: failed to allocate buffer for DLS REQ "
957 "frame\n", dev
->name
);
961 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
963 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
964 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
965 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
966 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
967 IEEE80211_STYPE_ACTION
);
969 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.dls_req
));
970 mgmt
->u
.action
.category
= WLAN_CATEGORY_DLS
;
971 mgmt
->u
.action
.u
.dls_req
.action_code
= WLAN_ACTION_DLS_REQ
;
972 memcpy(mgmt
->u
.action
.u
.dls_req
.dest
, addr
, ETH_ALEN
);
973 memcpy(mgmt
->u
.action
.u
.dls_req
.src
, dev
->dev_addr
, ETH_ALEN
);
974 mgmt
->u
.action
.u
.dls_req
.capab_info
= cpu_to_le16(ifsta
->ap_capab
);
975 mgmt
->u
.action
.u
.dls_req
.timeout
= timeout
;
977 /* Add supported rates and extended supported rates */
978 supp_rates
= skb_put(skb
, 2);
979 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
981 mode
= local
->oper_hw_mode
;
982 for (i
= 0; i
< mode
->num_rates
; i
++) {
983 struct ieee80211_rate
*rate
= &mode
->rates
[i
];
984 if (!(rate
->flags
& IEEE80211_RATE_SUPPORTED
))
987 pos
= skb_put(skb
, 1);
989 } else if (supp_rates
[1] == 8) {
990 esupp_rates
= skb_put(skb
, 3);
991 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
993 pos
= &esupp_rates
[2];
995 pos
= skb_put(skb
, 1);
998 if (local
->hw
.conf
.phymode
== MODE_ATHEROS_TURBO
)
999 *pos
= rate
->rate
/ 10;
1001 *pos
= rate
->rate
/ 5;
1004 ieee80211_sta_tx(dev
, skb
, 0);
1008 static void ieee80211_send_dls_resp(struct net_device
*dev
,
1009 struct ieee80211_if_sta
*ifsta
,
1010 u8
*mac_addr
, u16 status
)
1012 struct ieee80211_hw_mode
*mode
;
1013 struct sk_buff
*skb
;
1014 struct ieee80211_mgmt
*mgmt
;
1015 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1016 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
1019 skb
= dev_alloc_skb(sizeof(*mgmt
) + 200 /* rates + ext_rates Size */);
1021 printk(KERN_DEBUG
"%s: failed to allocate buffer for dls resp "
1022 "frame\n", dev
->name
);
1026 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1027 memset(mgmt
, 0, 24);
1028 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
1029 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1030 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1031 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1032 IEEE80211_STYPE_ACTION
);
1034 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.dls_resp
));
1035 mgmt
->u
.action
.category
= WLAN_CATEGORY_DLS
;
1036 mgmt
->u
.action
.u
.dls_resp
.action_code
= WLAN_ACTION_DLS_RESP
;
1037 memcpy(mgmt
->u
.action
.u
.dls_resp
.dest
, dev
->dev_addr
, ETH_ALEN
);
1038 memcpy(mgmt
->u
.action
.u
.dls_resp
.src
, mac_addr
, ETH_ALEN
);
1039 mgmt
->u
.action
.u
.dls_resp
.status_code
= cpu_to_le16(status
);
1041 if (!mgmt
->u
.action
.u
.dls_resp
.status_code
) {
1042 ieee80211_sta_tx(dev
, skb
, 0);
1046 /* Add capability information */
1047 pos
= skb_put(skb
, 2);
1048 *(__le16
*)pos
= cpu_to_le16(ifsta
->ap_capab
);
1050 /* Add supported rates and extended supported rates */
1051 supp_rates
= skb_put(skb
, 2);
1052 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
1054 mode
= local
->oper_hw_mode
;
1055 for (i
= 0; i
< mode
->num_rates
; i
++) {
1056 struct ieee80211_rate
*rate
= &mode
->rates
[i
];
1057 if (!(rate
->flags
& IEEE80211_RATE_SUPPORTED
))
1060 pos
= skb_put(skb
, 1);
1062 } else if (supp_rates
[1] == 8) {
1063 esupp_rates
= skb_put(skb
, 3);
1064 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
1066 pos
= &esupp_rates
[2];
1068 pos
= skb_put(skb
, 1);
1071 if (local
->hw
.conf
.phymode
== MODE_ATHEROS_TURBO
)
1072 *pos
= rate
->rate
/ 10;
1074 *pos
= rate
->rate
/ 5;
1077 ieee80211_sta_tx(dev
, skb
, 0);
1081 void ieee80211_send_dls_teardown(struct net_device
*dev
,
1082 struct ieee80211_if_sta
*ifsta
,
1083 u8
*mac_addr
, u16 reason
)
1085 struct ieee80211_mgmt
*mgmt
;
1086 struct sk_buff
*skb
;
1088 skb
= dev_alloc_skb(sizeof(*mgmt
));
1090 printk(KERN_DEBUG
"%s: failed to allocate buffer for DLS "
1091 "Teardown frame\n", dev
->name
);
1095 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1096 memset(mgmt
, 0, 24);
1097 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
1098 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1099 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1100 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1101 IEEE80211_STYPE_ACTION
);
1102 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.dls_teardown
));
1103 mgmt
->u
.action
.category
= WLAN_CATEGORY_DLS
;
1104 mgmt
->u
.action
.u
.dls_teardown
.action_code
= WLAN_ACTION_DLS_TEARDOWN
;
1105 memcpy(mgmt
->u
.action
.u
.dls_teardown
.dest
, mac_addr
, ETH_ALEN
);
1106 memcpy(mgmt
->u
.action
.u
.dls_teardown
.src
, dev
->dev_addr
, ETH_ALEN
);
1107 mgmt
->u
.action
.u
.dls_teardown
.reason_code
= cpu_to_le16(reason
);
1109 ieee80211_sta_tx(dev
, skb
, 0);
1113 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
1114 struct ieee80211_if_sta
*ifsta
)
1116 struct ieee80211_sta_bss
*bss
;
1119 if (!ifsta
|| ifsta
->mixed_cell
||
1120 ifsta
->key_mgmt
!= IEEE80211_KEY_MGMT_NONE
)
1123 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
1127 if (ieee80211_sta_wep_configured(dev
) !=
1128 !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
))
1131 ieee80211_rx_bss_put(dev
, bss
);
1137 static void ieee80211_associate(struct net_device
*dev
,
1138 struct ieee80211_if_sta
*ifsta
)
1140 ifsta
->assoc_tries
++;
1141 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
1142 printk(KERN_DEBUG
"%s: association with AP " MAC_FMT
1144 dev
->name
, MAC_ARG(ifsta
->bssid
));
1145 ifsta
->state
= IEEE80211_DISABLED
;
1149 ifsta
->state
= IEEE80211_ASSOCIATE
;
1150 printk(KERN_DEBUG
"%s: associate with AP " MAC_FMT
"\n",
1151 dev
->name
, MAC_ARG(ifsta
->bssid
));
1152 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
1153 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
1154 "mixed-cell disabled - abort association\n", dev
->name
);
1155 ifsta
->state
= IEEE80211_DISABLED
;
1159 ieee80211_send_assoc(dev
, ifsta
);
1161 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
1165 static void ieee80211_associated(struct net_device
*dev
,
1166 struct ieee80211_if_sta
*ifsta
)
1168 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1169 struct sta_info
*sta
;
1172 /* TODO: start monitoring current AP signal quality and number of
1173 * missed beacons. Scan other channels every now and then and search
1174 * for better APs. */
1175 /* TODO: remove expired BSSes */
1177 ifsta
->state
= IEEE80211_ASSOCIATED
;
1179 sta
= sta_info_get(local
, ifsta
->bssid
);
1181 printk(KERN_DEBUG
"%s: No STA entry for own AP " MAC_FMT
"\n",
1182 dev
->name
, MAC_ARG(ifsta
->bssid
));
1186 if (time_after(jiffies
,
1187 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
1188 if (ifsta
->probereq_poll
) {
1189 printk(KERN_DEBUG
"%s: No ProbeResp from "
1190 "current AP " MAC_FMT
" - assume out of "
1192 dev
->name
, MAC_ARG(ifsta
->bssid
));
1194 sta_info_free(sta
, 0);
1195 ifsta
->probereq_poll
= 0;
1197 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
1199 local
->scan_ssid_len
);
1200 ifsta
->probereq_poll
= 1;
1203 ifsta
->probereq_poll
= 0;
1204 if (time_after(jiffies
, ifsta
->last_probe
+
1205 IEEE80211_PROBE_INTERVAL
)) {
1206 ifsta
->last_probe
= jiffies
;
1207 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
1215 union iwreq_data wrqu
;
1216 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
1217 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
1218 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
1219 mod_timer(&ifsta
->timer
, jiffies
+
1220 IEEE80211_MONITORING_INTERVAL
+ 30 * HZ
);
1222 mod_timer(&ifsta
->timer
, jiffies
+
1223 IEEE80211_MONITORING_INTERVAL
);
1228 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
1229 u8
*ssid
, size_t ssid_len
)
1231 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1232 struct ieee80211_hw_mode
*mode
;
1233 struct sk_buff
*skb
;
1234 struct ieee80211_mgmt
*mgmt
;
1235 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
1238 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
1240 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
1241 "request\n", dev
->name
);
1244 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1246 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1247 memset(mgmt
, 0, 24);
1248 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1249 IEEE80211_STYPE_PROBE_REQ
);
1250 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1252 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
1253 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
1255 memset(mgmt
->da
, 0xff, ETH_ALEN
);
1256 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
1258 pos
= skb_put(skb
, 2 + ssid_len
);
1259 *pos
++ = WLAN_EID_SSID
;
1261 memcpy(pos
, ssid
, ssid_len
);
1263 supp_rates
= skb_put(skb
, 2);
1264 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
1266 mode
= local
->oper_hw_mode
;
1267 for (i
= 0; i
< mode
->num_rates
; i
++) {
1268 struct ieee80211_rate
*rate
= &mode
->rates
[i
];
1269 if (!(rate
->flags
& IEEE80211_RATE_SUPPORTED
))
1272 pos
= skb_put(skb
, 1);
1274 } else if (supp_rates
[1] == 8) {
1275 esupp_rates
= skb_put(skb
, 3);
1276 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
1278 pos
= &esupp_rates
[2];
1280 pos
= skb_put(skb
, 1);
1283 if (mode
->mode
== MODE_ATHEROS_TURBO
)
1284 *pos
= rate
->rate
/ 10;
1286 *pos
= rate
->rate
/ 5;
1289 ieee80211_sta_tx(dev
, skb
, 0);
1293 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
1295 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1296 if (!sdata
|| !sdata
->default_key
||
1297 sdata
->default_key
->alg
!= ALG_WEP
)
1303 static void ieee80211_auth_completed(struct net_device
*dev
,
1304 struct ieee80211_if_sta
*ifsta
)
1306 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
1307 ifsta
->authenticated
= 1;
1308 ieee80211_associate(dev
, ifsta
);
1312 static void ieee80211_auth_challenge(struct net_device
*dev
,
1313 struct ieee80211_if_sta
*ifsta
,
1314 struct ieee80211_mgmt
*mgmt
,
1318 struct ieee802_11_elems elems
;
1320 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
1321 pos
= mgmt
->u
.auth
.variable
;
1322 if (ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
)
1324 printk(KERN_DEBUG
"%s: failed to parse Auth(challenge)\n",
1328 if (!elems
.challenge
) {
1329 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
1330 "frame\n", dev
->name
);
1333 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
1334 elems
.challenge_len
+ 2, 1);
1338 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1339 struct ieee80211_if_sta
*ifsta
,
1340 struct ieee80211_mgmt
*mgmt
,
1343 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1344 u16 auth_alg
, auth_transaction
, status_code
;
1346 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1347 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
1348 printk(KERN_DEBUG
"%s: authentication frame received from "
1349 MAC_FMT
", but not in authenticate state - ignored\n",
1350 dev
->name
, MAC_ARG(mgmt
->sa
));
1355 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
1356 "received from " MAC_FMT
" - ignored\n",
1357 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
1361 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
1362 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1363 printk(KERN_DEBUG
"%s: authentication frame received from "
1364 "unknown AP (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
1365 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
1366 MAC_ARG(mgmt
->bssid
));
1370 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
1371 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
1372 printk(KERN_DEBUG
"%s: authentication frame received from "
1373 "unknown BSSID (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
1374 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
1375 MAC_ARG(mgmt
->bssid
));
1379 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1380 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1381 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1383 printk(KERN_DEBUG
"%s: RX authentication from " MAC_FMT
" (alg=%d "
1384 "transaction=%d status=%d)\n",
1385 dev
->name
, MAC_ARG(mgmt
->sa
), auth_alg
,
1386 auth_transaction
, status_code
);
1388 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
1389 /* IEEE 802.11 standard does not require authentication in IBSS
1390 * networks and most implementations do not seem to use it.
1391 * However, try to reply to authentication attempts if someone
1392 * has actually implemented this.
1393 * TODO: Could implement shared key authentication. */
1394 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
1395 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
1396 "frame (alg=%d transaction=%d)\n",
1397 dev
->name
, auth_alg
, auth_transaction
);
1400 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1403 if (auth_alg
!= ifsta
->auth_alg
||
1404 auth_transaction
!= ifsta
->auth_transaction
) {
1405 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1406 "(alg=%d transaction=%d)\n",
1407 dev
->name
, auth_alg
, auth_transaction
);
1411 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1412 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1413 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1414 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1416 const int num_algs
= ARRAY_SIZE(algs
);
1418 algs
[0] = algs
[1] = algs
[2] = 0xff;
1419 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1420 algs
[0] = WLAN_AUTH_OPEN
;
1421 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1422 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1423 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1424 algs
[2] = WLAN_AUTH_LEAP
;
1425 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1427 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1431 for (i
= 0; i
< num_algs
; i
++) {
1433 if (pos
>= num_algs
)
1435 if (algs
[pos
] == ifsta
->auth_alg
||
1438 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1439 !ieee80211_sta_wep_configured(dev
))
1441 ifsta
->auth_alg
= algs
[pos
];
1442 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1444 dev
->name
, ifsta
->auth_alg
);
1451 switch (ifsta
->auth_alg
) {
1452 case WLAN_AUTH_OPEN
:
1453 case WLAN_AUTH_LEAP
:
1454 ieee80211_auth_completed(dev
, ifsta
);
1456 case WLAN_AUTH_SHARED_KEY
:
1457 if (ifsta
->auth_transaction
== 4)
1458 ieee80211_auth_completed(dev
, ifsta
);
1460 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1466 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1467 struct ieee80211_if_sta
*ifsta
,
1468 struct ieee80211_mgmt
*mgmt
,
1474 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1475 "received from " MAC_FMT
" - ignored\n",
1476 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
1480 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1481 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1482 "unknown AP (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
1483 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
1484 MAC_ARG(mgmt
->bssid
));
1488 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1490 printk(KERN_DEBUG
"%s: RX deauthentication from " MAC_FMT
1492 dev
->name
, MAC_ARG(mgmt
->sa
), reason_code
);
1494 if (ifsta
->authenticated
) {
1495 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1498 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1499 ifsta
->state
== IEEE80211_ASSOCIATE
||
1500 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1501 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1502 mod_timer(&ifsta
->timer
, jiffies
+
1503 IEEE80211_RETRY_AUTH_INTERVAL
);
1506 ieee80211_set_disassoc(dev
, ifsta
, 1);
1507 ifsta
->authenticated
= 0;
1511 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1512 struct ieee80211_if_sta
*ifsta
,
1513 struct ieee80211_mgmt
*mgmt
,
1519 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1520 "received from " MAC_FMT
" - ignored\n",
1521 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
1525 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1526 printk(KERN_DEBUG
"%s: disassociation frame received from "
1527 "unknown AP (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
1528 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
1529 MAC_ARG(mgmt
->bssid
));
1533 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1535 printk(KERN_DEBUG
"%s: RX disassociation from " MAC_FMT
1537 dev
->name
, MAC_ARG(mgmt
->sa
), reason_code
);
1539 if (ifsta
->associated
)
1540 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1542 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1543 ifsta
->state
= IEEE80211_ASSOCIATE
;
1544 mod_timer(&ifsta
->timer
, jiffies
+
1545 IEEE80211_RETRY_AUTH_INTERVAL
);
1548 ieee80211_set_disassoc(dev
, ifsta
, 0);
1552 static void ieee80211_rx_mgmt_assoc_resp(struct net_device
*dev
,
1553 struct ieee80211_if_sta
*ifsta
,
1554 struct ieee80211_mgmt
*mgmt
,
1558 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1559 struct ieee80211_hw_mode
*mode
;
1560 struct sta_info
*sta
;
1562 u16 capab_info
, status_code
, aid
;
1563 struct ieee802_11_elems elems
;
1567 /* AssocResp and ReassocResp have identical structure, so process both
1568 * of them in this function. */
1570 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1571 printk(KERN_DEBUG
"%s: association frame received from "
1572 MAC_FMT
", but not in associate state - ignored\n",
1573 dev
->name
, MAC_ARG(mgmt
->sa
));
1578 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1579 "received from " MAC_FMT
" - ignored\n",
1580 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
1584 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1585 printk(KERN_DEBUG
"%s: association frame received from "
1586 "unknown AP (SA=" MAC_FMT
" BSSID=" MAC_FMT
") - "
1587 "ignored\n", dev
->name
, MAC_ARG(mgmt
->sa
),
1588 MAC_ARG(mgmt
->bssid
));
1592 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1593 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1594 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1595 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1596 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1597 "set\n", dev
->name
, aid
);
1598 aid
&= ~(BIT(15) | BIT(14));
1600 printk(KERN_DEBUG
"%s: RX %sssocResp from " MAC_FMT
" (capab=0x%x "
1601 "status=%d aid=%d)\n",
1602 dev
->name
, reassoc
? "Rea" : "A", MAC_ARG(mgmt
->sa
),
1603 capab_info
, status_code
, aid
);
1605 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1606 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1607 dev
->name
, status_code
);
1608 if (status_code
== WLAN_STATUS_REASSOC_NO_ASSOC
)
1609 ifsta
->prev_bssid_set
= 0;
1613 pos
= mgmt
->u
.assoc_resp
.variable
;
1614 if (ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
)
1616 printk(KERN_DEBUG
"%s: failed to parse AssocResp\n",
1621 if (!elems
.supp_rates
) {
1622 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1627 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1629 ifsta
->ap_capab
= capab_info
;
1631 kfree(ifsta
->assocresp_ies
);
1632 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1633 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_ATOMIC
);
1634 if (ifsta
->assocresp_ies
)
1635 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1637 ieee80211_set_associated(dev
, ifsta
, 1);
1639 /* Add STA entry for the AP */
1640 sta
= sta_info_get(local
, ifsta
->bssid
);
1642 struct ieee80211_sta_bss
*bss
;
1643 sta
= sta_info_add(local
, dev
, ifsta
->bssid
, GFP_ATOMIC
);
1645 printk(KERN_DEBUG
"%s: failed to add STA entry for the"
1646 " AP\n", dev
->name
);
1649 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
);
1651 sta
->last_rssi
= bss
->rssi
;
1652 sta
->last_signal
= bss
->signal
;
1653 sta
->last_noise
= bss
->noise
;
1654 ieee80211_rx_bss_put(dev
, bss
);
1659 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
;
1663 mode
= local
->oper_hw_mode
;
1664 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1665 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1666 if (mode
->mode
== MODE_ATHEROS_TURBO
)
1668 for (j
= 0; j
< mode
->num_rates
; j
++)
1669 if (mode
->rates
[j
].rate
== rate
)
1672 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1673 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1674 if (mode
->mode
== MODE_ATHEROS_TURBO
)
1676 for (j
= 0; j
< mode
->num_rates
; j
++)
1677 if (mode
->rates
[j
].rate
== rate
)
1680 sta
->supp_rates
= rates
;
1682 if (elems
.ht_extra_param
&& elems
.ht_cap_param
&& elems
.wmm_param
&&
1683 ifsta
->ht_enabled
&& local
->ops
->conf_ht
){
1686 rc
= local
->ops
->conf_ht(local_to_hw(local
),
1687 (struct ieee80211_ht_capability
*)
1689 (struct ieee80211_ht_additional_info
*)
1690 elems
.ht_extra_param
);
1692 sta
->flags
|= WLAN_STA_HT
;
1696 rate_control_rate_init(sta
, local
);
1698 if (elems
.wmm_param
&& ifsta
->wmm_enabled
) {
1699 sta
->flags
|= WLAN_STA_WME
;
1700 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1701 elems
.wmm_param_len
);
1707 ieee80211_associated(dev
, ifsta
);
1710 static u32
calculate_mpdu_exchange_time(struct ieee80211_local
*local
,
1711 struct ieee80211_elem_tspec
*tspec
)
1714 * FIXME: MPDUExchangeTime = duration(Nominal MSDU Size, Min PHY Rate) +
1715 * SIFS + ACK duration
1717 int extra
= 0; /* SIFS + ACK */
1719 switch (local
->hw
.conf
.phymode
) {
1720 case MODE_IEEE80211A
:
1723 case MODE_IEEE80211B
:
1726 case MODE_IEEE80211G
:
1731 return (tspec
->nominal_msdu_size
* 8) /
1732 (tspec
->min_phy_rate
/ 1000000) + extra
;
1735 static void sta_update_tspec(struct ieee80211_local
*local
,
1736 struct ieee80211_if_sta
*ifsta
,
1737 int action
, struct ieee80211_elem_tspec
*tspec
)
1739 u8 tsid
= IEEE80211_TSINFO_TSID(tspec
->ts_info
);
1740 u8 index
= ieee80211_ts_index(IEEE80211_TSINFO_DIR(tspec
->ts_info
));
1743 case WLAN_ACTION_QOS_ADDTS_RESP
:
1744 ifsta
->ts_data
[tsid
][index
].status
= TS_STATUS_ACTIVE
;
1745 ifsta
->ts_data
[tsid
][index
].up
=
1746 IEEE80211_TSINFO_UP(tspec
->ts_info
);
1747 ifsta
->ts_data
[tsid
][index
].used_time_usec
= 0;
1748 ifsta
->ts_data
[tsid
][index
].admitted_time_usec
+=
1749 ifsta
->dot11EDCAAveragingPeriod
* tspec
->medium_time
* 32;
1750 ifsta
->MPDUExchangeTime
=
1751 calculate_mpdu_exchange_time(local
, tspec
);
1753 case WLAN_ACTION_QOS_DELTS
:
1754 ifsta
->ts_data
[tsid
][index
].status
= TS_STATUS_INACTIVE
;
1755 ifsta
->ts_data
[tsid
][index
].used_time_usec
= 0;
1756 ifsta
->ts_data
[tsid
][index
].admitted_time_usec
-=
1757 ifsta
->dot11EDCAAveragingPeriod
* tspec
->medium_time
* 32;
1758 if (ifsta
->ts_data
[tsid
][index
].admitted_time_usec
< 0)
1759 ifsta
->ts_data
[tsid
][index
].admitted_time_usec
= 0;
1760 ifsta
->MPDUExchangeTime
= 0;
1763 printk(KERN_ERR
"%s: invalid action type %d\n", __FUNCTION__
,
1769 static void sta_parse_tspec(struct net_device
*dev
,
1770 struct ieee80211_if_sta
*ifsta
,
1771 struct ieee80211_mgmt
*mgmt
, size_t len
, u8 prefix
,
1772 struct ieee80211_elem_tspec
*tspec
)
1774 struct ieee802_11_elems elems
;
1778 printk(KERN_DEBUG "Dialog_token: %d, TID: %u, Direction: %u, PSB: %d, "
1779 "UP: %d\n", mgmt->u.action.u.wme_action.dialog_token,
1780 IEEE80211_TSINFO_TSID(tspec->ts_info),
1781 IEEE80211_TSINFO_DIR(tspec->ts_info),
1782 IEEE80211_TSINFO_APSD(tspec->ts_info),
1783 IEEE80211_TSINFO_UP(tspec->ts_info));
1786 if (mgmt
->u
.action
.category
== WLAN_CATEGORY_QOS
)
1787 pos
= mgmt
->u
.action
.u
.addts_resp
.variable
+ prefix
;
1789 pos
= mgmt
->u
.action
.u
.wme_action
.variable
+ prefix
;
1791 if (ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
)
1793 printk(KERN_DEBUG
"%s: failed to parse TSPEC\n", dev
->name
);
1796 memcpy(tspec
, elems
.tspec
, sizeof(*tspec
));
1799 int dls_link_status(struct ieee80211_local
*local
, u8
*addr
)
1801 struct sta_info
*dls
;
1802 int ret
= DLS_STATUS_NOLINK
;
1804 if ((dls
= dls_info_get(local
, addr
)) != NULL
) {
1805 ret
= dls
->dls_status
;
1811 static void sta_process_dls_req(struct net_device
*dev
,
1812 struct ieee80211_if_sta
*ifsta
,
1813 struct ieee80211_mgmt
*mgmt
, size_t len
)
1815 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1816 struct sta_info
*dls
;
1817 u8
*src
= mgmt
->u
.action
.u
.dls_req
.src
;
1818 struct ieee802_11_elems elems
;
1819 struct ieee80211_rate
*rates
;
1820 size_t baselen
, num_rates
;
1822 struct ieee80211_hw_mode
*mode
;
1825 printk(KERN_DEBUG
"Receive DLS request from "
1826 "%02X:%02X:%02X:%02X:%02X:%02X\n",
1827 src
[0], src
[1], src
[2], src
[3], src
[4], src
[5]);
1829 baselen
= (u8
*)mgmt
->u
.action
.u
.dls_req
.variable
- (u8
*)mgmt
;
1833 if (ieee802_11_parse_elems(mgmt
->u
.action
.u
.dls_req
.variable
,
1834 len
- baselen
, &elems
) == ParseFailed
) {
1835 printk(KERN_ERR
"DLS Parse support rates failed.\n");
1838 mode
= local
->sta_scanning
?
1839 local
->scan_hw_mode
: local
->oper_hw_mode
;
1840 rates
= mode
->rates
;
1841 num_rates
= mode
->num_rates
;
1843 for (i
= 0; i
< elems
.supp_rates_len
+ elems
.ext_supp_rates_len
; i
++) {
1845 if (i
< elems
.supp_rates_len
)
1846 rate
= elems
.supp_rates
[i
];
1847 else if (elems
.ext_supp_rates
)
1848 rate
= elems
.ext_supp_rates
[i
- elems
.supp_rates_len
];
1849 rate
= 5 * (rate
& 0x7f);
1850 if (mode
->mode
== MODE_ATHEROS_TURBO
)
1852 for (j
= 0; j
< num_rates
; j
++)
1853 if (rates
[j
].rate
== rate
)
1854 supp_rates
|= BIT(j
);
1856 if (supp_rates
== 0) {
1857 /* Send DLS failed Response to the peer because
1858 * the supported rates are mismatch */
1859 ieee80211_send_dls_resp(dev
, ifsta
, src
,
1860 WLAN_REASON_QSTA_NOT_USE
);
1864 dls
= dls_info_get(local
, src
);
1866 dls
= sta_info_add(local
, dev
, src
, GFP_ATOMIC
);
1870 dls
->dls_status
= DLS_STATUS_OK
;
1871 dls
->dls_timeout
= le16_to_cpu(mgmt
->u
.action
.u
.dls_req
.timeout
);
1872 dls
->supp_rates
= supp_rates
;
1874 /* Send DLS successful Response to the peer */
1875 ieee80211_send_dls_resp(dev
, ifsta
, src
, 0);
1879 static void sta_process_dls_resp(struct net_device
*dev
,
1880 struct ieee80211_if_sta
*ifsta
,
1881 struct ieee80211_mgmt
*mgmt
, size_t len
)
1883 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1884 struct sta_info
*dls
;
1885 u8
*src
= mgmt
->u
.action
.u
.dls_resp
.src
;
1886 struct ieee802_11_elems elems
;
1887 struct ieee80211_rate
*rates
;
1888 size_t baselen
, num_rates
;
1890 struct ieee80211_hw_mode
*mode
;
1893 printk(KERN_DEBUG
"Receive DLS response from "
1894 "%02X:%02X:%02X:%02X:%02X:%02X\n",
1895 src
[0], src
[1], src
[2], src
[3], src
[4], src
[5]);
1897 if (mgmt
->u
.action
.u
.dls_resp
.status_code
) {
1898 printk(KERN_ERR
"DLS setup refused by peer. Reason %d\n",
1899 mgmt
->u
.action
.u
.dls_resp
.status_code
);
1903 baselen
= (u8
*)mgmt
->u
.action
.u
.dls_resp
.variable
- (u8
*)mgmt
;
1907 if (ieee802_11_parse_elems(mgmt
->u
.action
.u
.dls_resp
.variable
,
1908 len
- baselen
, &elems
) == ParseFailed
) {
1909 printk(KERN_ERR
"DLS Parse support rates failed.\n");
1912 mode
= local
->sta_scanning
?
1913 local
->scan_hw_mode
: local
->oper_hw_mode
;
1914 rates
= mode
->rates
;
1915 num_rates
= mode
->num_rates
;
1917 for (i
= 0; i
< elems
.supp_rates_len
+ elems
.ext_supp_rates_len
; i
++) {
1919 if (i
< elems
.supp_rates_len
)
1920 rate
= elems
.supp_rates
[i
];
1921 else if (elems
.ext_supp_rates
)
1922 rate
= elems
.ext_supp_rates
[i
- elems
.supp_rates_len
];
1923 rate
= 5 * (rate
& 0x7f);
1924 if (mode
->mode
== MODE_ATHEROS_TURBO
)
1926 for (j
= 0; j
< num_rates
; j
++)
1927 if (rates
[j
].rate
== rate
)
1928 supp_rates
|= BIT(j
);
1931 dls
= dls_info_get(local
, src
);
1933 dls
= sta_info_add(local
, dev
, src
, GFP_ATOMIC
);
1937 dls
->supp_rates
= supp_rates
;
1938 dls
->dls_status
= DLS_STATUS_OK
;
1943 static void sta_process_dls_teardown(struct net_device
*dev
,
1944 struct ieee80211_if_sta
*ifsta
,
1945 struct ieee80211_mgmt
*mgmt
, size_t len
)
1947 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1948 u8
*src
= mgmt
->u
.action
.u
.dls_teardown
.src
;
1949 struct sta_info
*dls
;
1951 printk(KERN_DEBUG
"DLS Teardown received from "
1952 "%02X:%02X:%02X:%02X:%02X:%02X. Reason %d\n",
1953 src
[0], src
[1], src
[2], src
[3], src
[4], src
[5],
1954 mgmt
->u
.action
.u
.dls_teardown
.reason_code
);
1956 dls
= dls_info_get(local
, src
);
1958 sta_info_free(dls
, 0);
1963 /* Caller must hold local->sta_bss_lock */
1964 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
1965 struct ieee80211_sta_bss
*bss
)
1967 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1968 bss
->hnext
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1969 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] = bss
;
1973 /* Caller must hold local->sta_bss_lock */
1974 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
1975 struct ieee80211_sta_bss
*bss
)
1977 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1978 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
1979 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1983 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
1986 prev
->hnext
= bss
->hnext
;
1995 static struct ieee80211_sta_bss
*
1996 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
)
1998 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1999 struct ieee80211_sta_bss
*bss
;
2001 bss
= kmalloc(sizeof(*bss
), GFP_ATOMIC
);
2004 memset(bss
, 0, sizeof(*bss
));
2005 atomic_inc(&bss
->users
);
2006 atomic_inc(&bss
->users
);
2007 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
2009 spin_lock_bh(&local
->sta_bss_lock
);
2010 /* TODO: order by RSSI? */
2011 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2012 __ieee80211_rx_bss_hash_add(dev
, bss
);
2013 spin_unlock_bh(&local
->sta_bss_lock
);
2018 static struct ieee80211_sta_bss
*
2019 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
)
2021 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2022 struct ieee80211_sta_bss
*bss
;
2024 spin_lock_bh(&local
->sta_bss_lock
);
2025 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
2027 if (memcmp(bss
->bssid
, bssid
, ETH_ALEN
) == 0) {
2028 atomic_inc(&bss
->users
);
2033 spin_unlock_bh(&local
->sta_bss_lock
);
2038 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
2048 static void ieee80211_rx_bss_put(struct net_device
*dev
,
2049 struct ieee80211_sta_bss
*bss
)
2051 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2052 if (!atomic_dec_and_test(&bss
->users
))
2055 spin_lock_bh(&local
->sta_bss_lock
);
2056 __ieee80211_rx_bss_hash_del(dev
, bss
);
2057 list_del(&bss
->list
);
2058 spin_unlock_bh(&local
->sta_bss_lock
);
2059 ieee80211_rx_bss_free(bss
);
2063 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
2065 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2066 spin_lock_init(&local
->sta_bss_lock
);
2067 INIT_LIST_HEAD(&local
->sta_bss_list
);
2071 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
2073 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2074 struct ieee80211_sta_bss
*bss
, *tmp
;
2076 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
2077 ieee80211_rx_bss_put(dev
, bss
);
2081 static void ieee80211_rx_bss_info(struct net_device
*dev
,
2082 struct ieee80211_mgmt
*mgmt
,
2084 struct ieee80211_rx_status
*rx_status
,
2087 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2088 struct ieee802_11_elems elems
;
2090 int channel
, invalid
= 0, clen
;
2091 struct ieee80211_sta_bss
*bss
;
2092 struct sta_info
*sta
;
2093 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2096 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
2097 return; /* ignore ProbeResp to foreign address */
2100 printk(KERN_DEBUG
"%s: RX %s from " MAC_FMT
" to " MAC_FMT
"\n",
2101 dev
->name
, beacon
? "Beacon" : "Probe Response",
2102 MAC_ARG(mgmt
->sa
), MAC_ARG(mgmt
->da
));
2105 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2109 timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
2111 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
2112 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0) {
2113 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2114 static unsigned long last_tsf_debug
= 0;
2116 if (local
->ops
->get_tsf
)
2117 tsf
= local
->ops
->get_tsf(local_to_hw(local
));
2120 if (time_after(jiffies
, last_tsf_debug
+ 5 * HZ
)) {
2121 printk(KERN_DEBUG
"RX beacon SA=" MAC_FMT
" BSSID="
2122 MAC_FMT
" TSF=0x%llx BCN=0x%llx diff=%lld "
2124 MAC_ARG(mgmt
->sa
), MAC_ARG(mgmt
->bssid
),
2125 (unsigned long long)tsf
,
2126 (unsigned long long)timestamp
,
2127 (unsigned long long)(tsf
- timestamp
),
2129 last_tsf_debug
= jiffies
;
2131 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2134 if (ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
,
2135 &elems
) == ParseFailed
)
2138 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
2139 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
2140 (sta
= sta_info_get(local
, mgmt
->sa
))) {
2141 struct ieee80211_hw_mode
*mode
;
2142 struct ieee80211_rate
*rates
;
2144 u32 supp_rates
, prev_rates
;
2147 mode
= local
->sta_scanning
?
2148 local
->scan_hw_mode
: local
->oper_hw_mode
;
2149 rates
= mode
->rates
;
2150 num_rates
= mode
->num_rates
;
2153 for (i
= 0; i
< elems
.supp_rates_len
+
2154 elems
.ext_supp_rates_len
; i
++) {
2157 if (i
< elems
.supp_rates_len
)
2158 rate
= elems
.supp_rates
[i
];
2159 else if (elems
.ext_supp_rates
)
2160 rate
= elems
.ext_supp_rates
2161 [i
- elems
.supp_rates_len
];
2162 own_rate
= 5 * (rate
& 0x7f);
2163 if (mode
->mode
== MODE_ATHEROS_TURBO
)
2165 for (j
= 0; j
< num_rates
; j
++)
2166 if (rates
[j
].rate
== own_rate
)
2167 supp_rates
|= BIT(j
);
2170 prev_rates
= sta
->supp_rates
;
2171 sta
->supp_rates
&= supp_rates
;
2172 if (sta
->supp_rates
== 0) {
2173 /* No matching rates - this should not really happen.
2174 * Make sure that at least one rate is marked
2175 * supported to avoid issues with TX rate ctrl. */
2176 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
2178 if (sta
->supp_rates
!= prev_rates
) {
2179 printk(KERN_DEBUG
"%s: updated supp_rates set for "
2180 MAC_FMT
" based on beacon info (0x%x & 0x%x -> "
2182 dev
->name
, MAC_ARG(sta
->addr
), prev_rates
,
2183 supp_rates
, sta
->supp_rates
);
2191 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
2192 channel
= elems
.ds_params
[0];
2194 channel
= rx_status
->channel
;
2196 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
);
2198 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
);
2203 /* TODO: order by RSSI? */
2204 spin_lock_bh(&local
->sta_bss_lock
);
2205 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
2206 spin_unlock_bh(&local
->sta_bss_lock
);
2210 if (bss
->probe_resp
&& beacon
) {
2211 /* Do not allow beacon to override data from Probe Response. */
2212 ieee80211_rx_bss_put(dev
, bss
);
2216 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
2217 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2218 if (elems
.ssid
&& elems
.ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
2219 memcpy(bss
->ssid
, elems
.ssid
, elems
.ssid_len
);
2220 bss
->ssid_len
= elems
.ssid_len
;
2223 bss
->supp_rates_len
= 0;
2224 if (elems
.supp_rates
) {
2225 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2226 if (clen
> elems
.supp_rates_len
)
2227 clen
= elems
.supp_rates_len
;
2228 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
2230 bss
->supp_rates_len
+= clen
;
2232 if (elems
.ext_supp_rates
) {
2233 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2234 if (clen
> elems
.ext_supp_rates_len
)
2235 clen
= elems
.ext_supp_rates_len
;
2236 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
2237 elems
.ext_supp_rates
, clen
);
2238 bss
->supp_rates_len
+= clen
;
2242 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
2243 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
2245 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
2247 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
2248 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
2250 bss
->wpa_ie_len
= 0;
2251 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
2254 bss
->wpa_ie_len
= 0;
2258 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
2259 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
2261 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
2263 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
2264 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
2266 bss
->rsn_ie_len
= 0;
2267 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
2270 bss
->rsn_ie_len
= 0;
2273 if (elems
.wmm_param
&&
2274 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
2275 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
2277 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
2279 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
2280 elems
.wmm_param_len
+ 2);
2281 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
2283 bss
->wmm_ie_len
= 0;
2284 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
2287 bss
->wmm_ie_len
= 0;
2290 if (elems
.ht_cap_param
&&
2291 (!bss
->ht_ie
|| bss
->ht_ie_len
!= elems
.ht_cap_param_len
||
2292 memcmp(bss
->ht_ie
, elems
.ht_cap_param
, elems
.ht_cap_param_len
))) {
2295 bss
->ht_ie
= kmalloc(elems
.ht_cap_param_len
+ 2, GFP_ATOMIC
);
2297 memcpy(bss
->ht_ie
, elems
.ht_cap_param
- 2,
2298 elems
.ht_cap_param_len
+ 2);
2299 bss
->ht_ie_len
= elems
.ht_cap_param_len
+ 2;
2302 } else if (!elems
.ht_cap_param
&& bss
->ht_ie
) {
2308 bss
->hw_mode
= rx_status
->phymode
;
2309 bss
->channel
= channel
;
2310 bss
->freq
= rx_status
->freq
;
2311 if (channel
!= rx_status
->channel
&&
2312 (bss
->hw_mode
== MODE_IEEE80211G
||
2313 bss
->hw_mode
== MODE_IEEE80211B
) &&
2314 channel
>= 1 && channel
<= 14) {
2315 static const int freq_list
[] = {
2316 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2317 2447, 2452, 2457, 2462, 2467, 2472, 2484
2319 /* IEEE 802.11g/b mode can receive packets from neighboring
2320 * channels, so map the channel into frequency. */
2321 bss
->freq
= freq_list
[channel
- 1];
2323 bss
->timestamp
= timestamp
;
2324 bss
->last_update
= jiffies
;
2325 bss
->rssi
= rx_status
->ssi
;
2326 bss
->signal
= rx_status
->signal
;
2327 bss
->noise
= rx_status
->noise
;
2330 ieee80211_rx_bss_put(dev
, bss
);
2334 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
2335 struct ieee80211_mgmt
*mgmt
,
2337 struct ieee80211_rx_status
*rx_status
)
2339 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
2343 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
2344 struct ieee80211_mgmt
*mgmt
,
2346 struct ieee80211_rx_status
*rx_status
)
2348 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2349 struct ieee80211_sub_if_data
*sdata
;
2350 struct ieee80211_if_sta
*ifsta
;
2353 struct ieee802_11_elems elems
;
2355 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
2357 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2358 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
2360 ifsta
= &sdata
->u
.sta
;
2362 if (!ifsta
->associated
||
2363 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
2366 /* Process beacon from the current BSS */
2367 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2371 if (ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
,
2372 &elems
) == ParseFailed
)
2376 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
2378 (elems
.erp_info
[0] & ERP_INFO_USE_PROTECTION
) != 0;
2381 if (use_protection
!= !!ifsta
->use_protection
) {
2382 if (net_ratelimit()) {
2383 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
2386 use_protection
? "enabled" : "disabled",
2387 MAC_ARG(ifsta
->bssid
));
2389 ifsta
->use_protection
= use_protection
? 1 : 0;
2390 local
->cts_protect_erp_frames
= use_protection
;
2393 if (elems
.wmm_param
&& ifsta
->wmm_enabled
) {
2394 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2395 elems
.wmm_param_len
);
2400 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
2401 struct ieee80211_if_sta
*ifsta
,
2402 struct ieee80211_mgmt
*mgmt
,
2404 struct ieee80211_rx_status
*rx_status
)
2406 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2407 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2409 struct sk_buff
*skb
;
2410 struct ieee80211_mgmt
*resp
;
2413 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
||
2414 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
2415 len
< 24 + 2 || !ifsta
->probe_resp
)
2418 if (local
->ops
->tx_last_beacon
)
2419 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
2423 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2424 printk(KERN_DEBUG
"%s: RX ProbeReq SA=" MAC_FMT
" DA=" MAC_FMT
" BSSID="
2425 MAC_FMT
" (tx_last_beacon=%d)\n",
2426 dev
->name
, MAC_ARG(mgmt
->sa
), MAC_ARG(mgmt
->da
),
2427 MAC_ARG(mgmt
->bssid
), tx_last_beacon
);
2428 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2430 if (!tx_last_beacon
)
2433 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
2434 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
2437 end
= ((u8
*) mgmt
) + len
;
2438 pos
= mgmt
->u
.probe_req
.variable
;
2439 if (pos
[0] != WLAN_EID_SSID
||
2440 pos
+ 2 + pos
[1] > end
) {
2441 if (net_ratelimit()) {
2442 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
2443 "from " MAC_FMT
"\n",
2444 dev
->name
, MAC_ARG(mgmt
->sa
));
2449 (pos
[1] != ifsta
->ssid_len
||
2450 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
2451 /* Ignore ProbeReq for foreign SSID */
2455 /* Reply with ProbeResp */
2456 skb
= skb_copy(ifsta
->probe_resp
, GFP_ATOMIC
);
2460 resp
= (struct ieee80211_mgmt
*) skb
->data
;
2461 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
2462 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2463 printk(KERN_DEBUG
"%s: Sending ProbeResp to " MAC_FMT
"\n",
2464 dev
->name
, MAC_ARG(resp
->da
));
2465 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2466 ieee80211_sta_tx(dev
, skb
, 0);
2469 static void ieee80211_send_addba_resp(struct net_device
*dev
,
2470 struct ieee80211_mgmt
*mgmt_src
,
2474 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2475 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2476 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2477 struct sk_buff
*skb
;
2478 struct ieee80211_mgmt
*mgmt
;
2480 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
);
2482 printk(KERN_DEBUG
"%s: failed to allocate buffer "
2483 "for addba resp frame\n", dev
->name
);
2487 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2488 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
2489 memset(mgmt
, 0, 24);
2490 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
2491 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2492 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2493 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2494 IEEE80211_STYPE_ACTION
);
2496 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
2497 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
2498 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
2499 mgmt
->u
.action
.u
.addba_resp
.dialog_token
=
2500 mgmt_src
->u
.action
.u
.addba_req
.dialog_token
;
2501 mgmt
->u
.action
.u
.addba_resp
.capab
=
2502 mgmt_src
->u
.action
.u
.addba_req
.capab
;
2503 mgmt
->u
.action
.u
.addba_resp
.timeout
=
2504 mgmt_src
->u
.action
.u
.addba_req
.timeout
;
2505 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
2507 ieee80211_sta_tx(dev
, skb
, 0);
2512 static void ieee80211_rx_mgmt_action(struct net_device
*dev
,
2513 struct ieee80211_if_sta
*ifsta
,
2514 struct ieee80211_mgmt
*mgmt
,
2518 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2519 struct ieee80211_elem_tspec tspec
;
2521 if (len
< IEEE80211_MIN_ACTION_SIZE
)
2524 switch (mgmt
->u
.action
.category
) {
2525 case WLAN_CATEGORY_QOS
:
2526 case WLAN_CATEGORY_WMM
:
2528 printk(KERN_DEBUG
"%s: too short (%zd) QoS category "
2529 "frame received from " MAC_FMT
" - ignored\n",
2530 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
2533 switch (mgmt
->u
.action
.u
.wme_action
.action_code
) {
2534 case WLAN_ACTION_QOS_ADDTS_REQ
:
2535 printk(KERN_DEBUG
"%s: WLAN_ACTION_QOS_ADDTS_REQ "
2536 "received in Non-AP STA mode!\n", dev
->name
);
2538 case WLAN_ACTION_QOS_ADDTS_RESP
:
2539 if (mgmt
->u
.action
.u
.wme_action
.status_code
== 47) {
2540 /* TODO: handle TS Delay */
2543 /* TODO: handle TCLAS, TCLAS Porcessing here */
2545 if (mgmt
->u
.action
.u
.wme_action
.status_code
== 0) {
2546 /* TODO: handle Schedule */
2547 sta_parse_tspec(dev
, ifsta
, mgmt
, len
,
2549 sta_update_tspec(local
, ifsta
,
2550 WLAN_ACTION_QOS_ADDTS_RESP
,
2552 mod_timer(&ifsta
->admit_timer
, jiffies
+
2553 ifsta
->dot11EDCAAveragingPeriod
* HZ
);
2556 case WLAN_ACTION_QOS_DELTS
:
2557 sta_parse_tspec(dev
, ifsta
, mgmt
, len
, prefix
, &tspec
);
2558 sta_update_tspec(local
, ifsta
,
2559 WLAN_ACTION_QOS_DELTS
, &tspec
);
2562 printk(KERN_ERR
"%s: unsupported QoS action code %d\n",
2564 mgmt
->u
.action
.u
.wme_action
.action_code
);
2569 case WLAN_CATEGORY_DLS
:
2570 if (len
< 24 + 16) {
2571 printk(KERN_DEBUG
"%s: too short (%zd) DLS category "
2572 "frame received from " MAC_FMT
" - ignored\n",
2573 dev
->name
, len
, MAC_ARG(mgmt
->sa
));
2576 switch (mgmt
->u
.action
.u
.dls_req
.action_code
) {
2577 case WLAN_ACTION_DLS_REQ
:
2578 sta_process_dls_req(dev
, ifsta
, mgmt
, len
);
2580 case WLAN_ACTION_DLS_RESP
:
2581 sta_process_dls_resp(dev
, ifsta
, mgmt
, len
);
2583 case WLAN_ACTION_DLS_TEARDOWN
:
2584 sta_process_dls_teardown(dev
, ifsta
, mgmt
, len
);
2587 printk(KERN_ERR
"%s: unsupported DLS action code %d\n",
2588 dev
->name
, mgmt
->u
.action
.u
.dls_req
.action_code
);
2593 case WLAN_CATEGORY_BACK
:
2594 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
2595 case WLAN_ACTION_ADDBA_REQ
:
2596 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2597 sizeof(mgmt
->u
.action
.u
.addba_req
)))
2599 if (!local
->ops
->handle_ba_action
||
2600 (local
->ops
->handle_ba_action(local_to_hw(local
),
2602 ieee80211_send_addba_resp(dev
, mgmt
, len
,
2603 WLAN_STATUS_REQUEST_DECLINED
);
2605 ieee80211_send_addba_resp(dev
, mgmt
, len
,
2606 WLAN_STATUS_SUCCESS
);
2608 case WLAN_ACTION_ADDBA_RESP
:
2609 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2610 sizeof(mgmt
->u
.action
.u
.addba_resp
)))
2612 if (!local
->ops
->handle_ba_action
)
2614 local
->ops
->handle_ba_action(local_to_hw(local
), mgmt
);
2616 case WLAN_ACTION_DELBA
:
2617 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2618 sizeof(mgmt
->u
.action
.u
.delba
)))
2621 if (!local
->ops
->handle_ba_action
)
2624 local
->ops
->handle_ba_action(local_to_hw(local
), mgmt
);
2636 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
2637 struct ieee80211_rx_status
*rx_status
)
2639 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2640 struct ieee80211_sub_if_data
*sdata
;
2641 struct ieee80211_if_sta
*ifsta
;
2642 struct ieee80211_mgmt
*mgmt
;
2648 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2649 ifsta
= &sdata
->u
.sta
;
2651 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2652 fc
= le16_to_cpu(mgmt
->frame_control
);
2654 switch (fc
& IEEE80211_FCTL_STYPE
) {
2655 case IEEE80211_STYPE_PROBE_REQ
:
2656 case IEEE80211_STYPE_PROBE_RESP
:
2657 case IEEE80211_STYPE_BEACON
:
2658 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
2659 case IEEE80211_STYPE_AUTH
:
2660 case IEEE80211_STYPE_ASSOC_RESP
:
2661 case IEEE80211_STYPE_REASSOC_RESP
:
2662 case IEEE80211_STYPE_DEAUTH
:
2663 case IEEE80211_STYPE_DISASSOC
:
2664 case IEEE80211_STYPE_ACTION
:
2665 skb_queue_tail(&ifsta
->skb_queue
, skb
);
2666 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2669 printk(KERN_DEBUG
"%s: received unknown management frame - "
2670 "stype=%d\n", dev
->name
,
2671 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
2680 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
2681 struct sk_buff
*skb
)
2683 struct ieee80211_rx_status
*rx_status
;
2684 struct ieee80211_sub_if_data
*sdata
;
2685 struct ieee80211_if_sta
*ifsta
;
2686 struct ieee80211_mgmt
*mgmt
;
2689 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2690 ifsta
= &sdata
->u
.sta
;
2692 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
2693 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2694 fc
= le16_to_cpu(mgmt
->frame_control
);
2696 switch (fc
& IEEE80211_FCTL_STYPE
) {
2697 case IEEE80211_STYPE_PROBE_REQ
:
2698 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
2701 case IEEE80211_STYPE_PROBE_RESP
:
2702 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
2704 case IEEE80211_STYPE_BEACON
:
2705 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
2707 case IEEE80211_STYPE_AUTH
:
2708 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
2710 case IEEE80211_STYPE_ASSOC_RESP
:
2711 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 0);
2713 case IEEE80211_STYPE_REASSOC_RESP
:
2714 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 1);
2716 case IEEE80211_STYPE_DEAUTH
:
2717 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
2719 case IEEE80211_STYPE_DISASSOC
:
2720 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
2722 case IEEE80211_STYPE_ACTION
:
2723 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
);
2731 void ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
2732 struct ieee80211_rx_status
*rx_status
)
2734 struct ieee80211_mgmt
*mgmt
;
2737 if (skb
->len
< 24) {
2742 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2743 fc
= le16_to_cpu(mgmt
->frame_control
);
2745 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2746 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
2747 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
2748 skb
->len
, rx_status
);
2749 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
2750 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
2759 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
2761 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2763 struct sta_info
*sta
;
2765 spin_lock_bh(&local
->sta_lock
);
2766 list_for_each_entry(sta
, &local
->sta_list
, list
) {
2767 if (sta
->dev
== dev
&&
2768 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
2774 spin_unlock_bh(&local
->sta_lock
);
2780 static void ieee80211_sta_expire(struct net_device
*dev
)
2782 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2783 struct sta_info
*sta
, *tmp
;
2785 spin_lock_bh(&local
->sta_lock
);
2786 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
2787 if (time_after(jiffies
, sta
->last_rx
+
2788 IEEE80211_IBSS_INACTIVITY_LIMIT
)) {
2789 printk(KERN_DEBUG
"%s: expiring inactive STA " MAC_FMT
2790 "\n", dev
->name
, MAC_ARG(sta
->addr
));
2791 sta_info_free(sta
, 1);
2793 spin_unlock_bh(&local
->sta_lock
);
2797 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
2798 struct ieee80211_if_sta
*ifsta
)
2800 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2802 ieee80211_sta_expire(dev
);
2803 if (ieee80211_sta_active_ibss(dev
))
2806 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
2807 "IBSS networks with same SSID (merge)\n", dev
->name
);
2808 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
2812 void ieee80211_sta_timer(unsigned long data
)
2814 struct ieee80211_sub_if_data
*sdata
=
2815 (struct ieee80211_sub_if_data
*) data
;
2816 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2817 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
2819 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2820 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2824 void ieee80211_sta_work(struct work_struct
*work
)
2826 struct ieee80211_sub_if_data
*sdata
=
2827 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
2828 struct net_device
*dev
= sdata
->dev
;
2829 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2830 struct ieee80211_if_sta
*ifsta
;
2831 struct sk_buff
*skb
;
2833 if (!netif_running(dev
))
2836 if (local
->sta_scanning
)
2839 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
&&
2840 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
2841 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
2842 "(type=%d)\n", dev
->name
, sdata
->type
);
2845 ifsta
= &sdata
->u
.sta
;
2847 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
2848 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
2850 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
2851 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
2852 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
2853 ieee80211_sta_start_scan(dev
, NULL
, 0);
2857 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
2858 if (ieee80211_sta_config_auth(dev
, ifsta
))
2860 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2861 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
2864 switch (ifsta
->state
) {
2865 case IEEE80211_DISABLED
:
2867 case IEEE80211_AUTHENTICATE
:
2868 ieee80211_authenticate(dev
, ifsta
);
2870 case IEEE80211_ASSOCIATE
:
2871 ieee80211_associate(dev
, ifsta
);
2873 case IEEE80211_ASSOCIATED
:
2874 ieee80211_associated(dev
, ifsta
);
2876 case IEEE80211_IBSS_SEARCH
:
2877 ieee80211_sta_find_ibss(dev
, ifsta
);
2879 case IEEE80211_IBSS_JOINED
:
2880 ieee80211_sta_merge_ibss(dev
, ifsta
);
2883 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
2888 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
2889 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
2890 "mixed-cell disabled - disassociate\n", dev
->name
);
2892 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
2893 ieee80211_set_disassoc(dev
, ifsta
, 0);
2898 void ieee80211_admit_refresh(unsigned long ptr
)
2900 struct net_device
*dev
;
2901 struct ieee80211_sub_if_data
*sdata
;
2902 struct ieee80211_if_sta
*ifsta
;
2905 dev
= (struct net_device
*) ptr
;
2906 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2907 ifsta
= &sdata
->u
.sta
;
2909 for (i
= 0; i
< STA_TSID_NUM
; i
++) {
2910 for (j
= 0; j
< STA_TSDIR_NUM
; j
++) {
2911 if ((ifsta
->ts_data
[i
][j
].status
!= TS_STATUS_ACTIVE
) &&
2912 (ifsta
->ts_data
[i
][j
].status
!= TS_STATUS_THROTTLING
))
2916 ifsta
->ts_data
[i
][j
].used_time_usec
-=
2917 ifsta
->ts_data
[i
][j
].admitted_time_usec
;
2918 if ((s32
)(ifsta
->ts_data
[i
][j
].used_time_usec
) < 0)
2919 ifsta
->ts_data
[i
][j
].used_time_usec
= 0;
2921 ifsta
->ts_data
[i
][j
].status
=
2922 (ifsta
->ts_data
[i
][j
].used_time_usec
>=
2923 ifsta
->ts_data
[i
][j
].admitted_time_usec
) ?
2924 TS_STATUS_THROTTLING
:
2930 mod_timer(&ifsta
->admit_timer
, jiffies
+
2931 ifsta
->dot11EDCAAveragingPeriod
* HZ
);
2935 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
2936 struct ieee80211_if_sta
*ifsta
)
2938 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2940 if (local
->ops
->reset_tsf
) {
2941 /* Reset own TSF to allow time synchronization work. */
2942 local
->ops
->reset_tsf(local_to_hw(local
));
2945 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
2948 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
2949 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2950 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
2951 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
2952 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
2953 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
2955 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2956 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
2958 ifsta
->auth_transaction
= -1;
2959 ifsta
->associated
= ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
2960 netif_carrier_off(dev
);
2964 void ieee80211_sta_req_auth(struct net_device
*dev
,
2965 struct ieee80211_if_sta
*ifsta
)
2967 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2968 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2970 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
2973 if ((ifsta
->bssid_set
|| ifsta
->auto_bssid_sel
) &&
2974 (ifsta
->ssid_set
|| ifsta
->auto_ssid_sel
)) {
2975 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2976 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2980 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
2981 const char *ssid
, int ssid_len
)
2983 int tmp
, hidden_ssid
;
2985 if (!memcmp(ifsta
->ssid
, ssid
, ssid_len
))
2988 if (ifsta
->auto_bssid_sel
)
2994 if (ssid
[tmp
] != '\0') {
3000 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
3003 if (ssid_len
== 1 && ssid
[0] == ' ')
3009 static int ieee80211_sta_config_auth(struct net_device
*dev
,
3010 struct ieee80211_if_sta
*ifsta
)
3012 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3013 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3014 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
3015 int top_rssi
= 0, freq
;
3019 if (!ifsta
->auto_channel_sel
&& !ifsta
->auto_bssid_sel
&&
3020 !ifsta
->auto_ssid_sel
) {
3021 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3023 ieee80211_sta_reset_auth(dev
, ifsta
);
3027 spin_lock_bh(&local
->sta_bss_lock
);
3028 freq
= local
->oper_channel
->freq
;
3029 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3030 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
3033 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
3034 !!sdata
->default_key
)
3037 if (!ifsta
->auto_channel_sel
&& bss
->freq
!= freq
)
3040 if (!ifsta
->auto_bssid_sel
&&
3041 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
3044 if (!ifsta
->auto_ssid_sel
&&
3045 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
3048 if (!selected
|| top_rssi
< bss
->rssi
) {
3050 top_rssi
= bss
->rssi
;
3054 atomic_inc(&selected
->users
);
3055 spin_unlock_bh(&local
->sta_bss_lock
);
3058 ieee80211_set_channel(local
, -1, selected
->freq
);
3059 if (!ifsta
->ssid_set
)
3060 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
3061 selected
->ssid_len
);
3062 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
3063 ieee80211_rx_bss_put(dev
, selected
);
3064 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3066 ieee80211_sta_reset_auth(dev
, ifsta
);
3069 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
3070 ieee80211_sta_start_scan(dev
, NULL
, 0);
3071 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3072 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3074 ifsta
->state
= IEEE80211_DISABLED
;
3080 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
3081 struct ieee80211_if_sta
*ifsta
,
3082 struct ieee80211_sta_bss
*bss
)
3084 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3085 int res
, rates
, i
, j
;
3086 struct sk_buff
*skb
;
3087 struct ieee80211_mgmt
*mgmt
;
3088 struct ieee80211_tx_control control
;
3089 struct ieee80211_rate
*rate
;
3090 struct ieee80211_hw_mode
*mode
;
3091 struct rate_control_extra extra
;
3093 struct ieee80211_sub_if_data
*sdata
;
3095 /* Remove possible STA entries from other IBSS networks. */
3096 sta_info_flush(local
, NULL
);
3098 if (local
->ops
->reset_tsf
) {
3099 /* Reset own TSF to allow time synchronization work. */
3100 local
->ops
->reset_tsf(local_to_hw(local
));
3102 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
3103 res
= ieee80211_if_config(dev
);
3107 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
3109 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3110 sdata
->drop_unencrypted
= bss
->capability
&
3111 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
3113 res
= ieee80211_set_channel(local
, -1, bss
->freq
);
3115 if (!(local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)) {
3116 printk(KERN_DEBUG
"%s: IBSS not allowed on channel %d "
3117 "(%d MHz)\n", dev
->name
, local
->hw
.conf
.channel
,
3118 local
->hw
.conf
.freq
);
3122 /* Set beacon template based on scan results */
3123 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
3128 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3130 mgmt
= (struct ieee80211_mgmt
*)
3131 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
3132 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
3133 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
3134 IEEE80211_STYPE_BEACON
);
3135 memset(mgmt
->da
, 0xff, ETH_ALEN
);
3136 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
3137 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
3138 mgmt
->u
.beacon
.beacon_int
=
3139 cpu_to_le16(local
->hw
.conf
.beacon_int
);
3140 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
3142 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
3143 *pos
++ = WLAN_EID_SSID
;
3144 *pos
++ = ifsta
->ssid_len
;
3145 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
3147 rates
= bss
->supp_rates_len
;
3150 pos
= skb_put(skb
, 2 + rates
);
3151 *pos
++ = WLAN_EID_SUPP_RATES
;
3153 memcpy(pos
, bss
->supp_rates
, rates
);
3155 pos
= skb_put(skb
, 2 + 1);
3156 *pos
++ = WLAN_EID_DS_PARAMS
;
3158 *pos
++ = bss
->channel
;
3160 pos
= skb_put(skb
, 2 + 2);
3161 *pos
++ = WLAN_EID_IBSS_PARAMS
;
3163 /* FIX: set ATIM window based on scan results */
3167 if (bss
->supp_rates_len
> 8) {
3168 rates
= bss
->supp_rates_len
- 8;
3169 pos
= skb_put(skb
, 2 + rates
);
3170 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
3172 memcpy(pos
, &bss
->supp_rates
[8], rates
);
3175 memset(&control
, 0, sizeof(control
));
3176 memset(&extra
, 0, sizeof(extra
));
3177 extra
.mode
= local
->oper_hw_mode
;
3178 rate
= rate_control_get_rate(local
, dev
, skb
, &extra
);
3180 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
3181 "for IBSS beacon\n", dev
->name
);
3184 control
.tx_rate
= (local
->short_preamble
&&
3185 (rate
->flags
& IEEE80211_RATE_PREAMBLE2
)) ?
3186 rate
->val2
: rate
->val
;
3187 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
3188 control
.power_level
= local
->hw
.conf
.power_level
;
3189 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
3190 control
.retry_limit
= 1;
3192 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
3193 if (ifsta
->probe_resp
) {
3194 mgmt
= (struct ieee80211_mgmt
*)
3195 ifsta
->probe_resp
->data
;
3196 mgmt
->frame_control
=
3197 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
3198 IEEE80211_STYPE_PROBE_RESP
);
3200 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
3201 "template for IBSS\n", dev
->name
);
3204 if (local
->ops
->beacon_update
&&
3205 local
->ops
->beacon_update(local_to_hw(local
),
3206 skb
, &control
) == 0) {
3207 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
3208 "template based on scan results\n", dev
->name
);
3213 mode
= local
->oper_hw_mode
;
3214 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
3215 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
3216 if (mode
->mode
== MODE_ATHEROS_TURBO
)
3218 for (j
= 0; j
< mode
->num_rates
; j
++)
3219 if (mode
->rates
[j
].rate
== bitrate
)
3222 ifsta
->supp_rates_bits
= rates
;
3226 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
3227 "template\n", dev
->name
);
3231 ifsta
->state
= IEEE80211_IBSS_JOINED
;
3232 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
3234 ieee80211_rx_bss_put(dev
, bss
);
3240 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
3241 struct ieee80211_if_sta
*ifsta
)
3243 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3244 struct ieee80211_sta_bss
*bss
;
3245 struct ieee80211_sub_if_data
*sdata
;
3246 struct ieee80211_hw_mode
*mode
;
3247 u8 bssid
[ETH_ALEN
], *pos
;
3251 /* Easier testing, use fixed BSSID. */
3252 memset(bssid
, 0xfe, ETH_ALEN
);
3254 /* Generate random, not broadcast, locally administered BSSID. Mix in
3255 * own MAC address to make sure that devices that do not have proper
3256 * random number generator get different BSSID. */
3257 get_random_bytes(bssid
, ETH_ALEN
);
3258 for (i
= 0; i
< ETH_ALEN
; i
++)
3259 bssid
[i
] ^= dev
->dev_addr
[i
];
3264 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID " MAC_FMT
"\n",
3265 dev
->name
, MAC_ARG(bssid
));
3267 bss
= ieee80211_rx_bss_add(dev
, bssid
);
3271 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3272 mode
= local
->oper_hw_mode
;
3274 if (local
->hw
.conf
.beacon_int
== 0)
3275 local
->hw
.conf
.beacon_int
= 100;
3276 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
3277 bss
->hw_mode
= local
->hw
.conf
.phymode
;
3278 bss
->channel
= local
->hw
.conf
.channel
;
3279 bss
->freq
= local
->hw
.conf
.freq
;
3280 bss
->last_update
= jiffies
;
3281 bss
->capability
= WLAN_CAPABILITY_IBSS
;
3282 if (sdata
->default_key
) {
3283 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
3285 sdata
->drop_unencrypted
= 0;
3286 bss
->supp_rates_len
= mode
->num_rates
;
3287 pos
= bss
->supp_rates
;
3288 for (i
= 0; i
< mode
->num_rates
; i
++) {
3289 int rate
= mode
->rates
[i
].rate
;
3290 if (mode
->mode
== MODE_ATHEROS_TURBO
)
3292 *pos
++ = (u8
) (rate
/ 5);
3295 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3299 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
3300 struct ieee80211_if_sta
*ifsta
)
3302 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3303 struct ieee80211_sta_bss
*bss
;
3308 if (ifsta
->ssid_len
== 0)
3311 active_ibss
= ieee80211_sta_active_ibss(dev
);
3312 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3313 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
3314 dev
->name
, active_ibss
);
3315 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3316 spin_lock_bh(&local
->sta_bss_lock
);
3317 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3318 if (ifsta
->ssid_len
!= bss
->ssid_len
||
3319 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
3320 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
3322 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3323 printk(KERN_DEBUG
" bssid=" MAC_FMT
" found\n",
3324 MAC_ARG(bss
->bssid
));
3325 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3326 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
3328 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
3331 spin_unlock_bh(&local
->sta_bss_lock
);
3333 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3334 printk(KERN_DEBUG
" sta_find_ibss: selected " MAC_FMT
" current "
3335 MAC_FMT
"\n", MAC_ARG(bssid
), MAC_ARG(ifsta
->bssid
));
3336 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3337 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
3338 (bss
= ieee80211_rx_bss_get(dev
, bssid
))) {
3339 printk(KERN_DEBUG
"%s: Selected IBSS BSSID " MAC_FMT
3340 " based on configured SSID\n",
3341 dev
->name
, MAC_ARG(bssid
));
3342 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3344 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3345 printk(KERN_DEBUG
" did not try to join ibss\n");
3346 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3348 /* Selected IBSS not found in current scan results - try to scan */
3349 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3350 !ieee80211_sta_active_ibss(dev
)) {
3351 mod_timer(&ifsta
->timer
, jiffies
+
3352 IEEE80211_IBSS_MERGE_INTERVAL
);
3353 } else if (time_after(jiffies
, local
->last_scan_completed
+
3354 IEEE80211_SCAN_INTERVAL
)) {
3355 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
3356 "join\n", dev
->name
);
3357 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
3359 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
3360 int interval
= IEEE80211_SCAN_INTERVAL
;
3362 if (time_after(jiffies
, ifsta
->ibss_join_req
+
3363 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
3364 if (ifsta
->create_ibss
&&
3365 local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)
3366 return ieee80211_sta_create_ibss(dev
, ifsta
);
3367 if (ifsta
->create_ibss
) {
3368 printk(KERN_DEBUG
"%s: IBSS not allowed on the"
3369 " configured channel %d (%d MHz)\n",
3370 dev
->name
, local
->hw
.conf
.channel
,
3371 local
->hw
.conf
.freq
);
3374 /* No IBSS found - decrease scan interval and continue
3376 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
3379 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3380 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
3388 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
3390 struct ieee80211_sub_if_data
*sdata
;
3391 struct ieee80211_if_sta
*ifsta
;
3392 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3394 if (len
> IEEE80211_MAX_SSID_LEN
)
3397 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
3399 if (local
->ops
->conf_tx
) {
3400 struct ieee80211_tx_queue_params qparam
;
3403 memset(&qparam
, 0, sizeof(qparam
));
3404 /* TODO: are these ok defaults for all hw_modes? */
3407 local
->hw
.conf
.phymode
== MODE_IEEE80211B
? 31 : 15;
3408 qparam
.cw_max
= 1023;
3409 qparam
.burst_time
= 0;
3410 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
3412 local
->ops
->conf_tx(local_to_hw(local
),
3413 i
+ IEEE80211_TX_QUEUE_DATA0
,
3416 /* IBSS uses different parameters for Beacon sending */
3420 local
->ops
->conf_tx(local_to_hw(local
),
3421 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
3424 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3425 ifsta
= &sdata
->u
.sta
;
3427 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
3428 ifsta
->prev_bssid_set
= 0;
3429 memcpy(ifsta
->ssid
, ssid
, len
);
3430 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
3431 ifsta
->ssid_len
= len
;
3433 ifsta
->ssid_set
= len
? 1 : 0;
3434 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& !ifsta
->bssid_set
) {
3435 ifsta
->ibss_join_req
= jiffies
;
3436 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3437 return ieee80211_sta_find_ibss(dev
, ifsta
);
3443 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
3445 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3446 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3447 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
3448 *len
= ifsta
->ssid_len
;
3453 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
3455 struct ieee80211_sub_if_data
*sdata
;
3456 struct ieee80211_if_sta
*ifsta
;
3459 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3460 ifsta
= &sdata
->u
.sta
;
3462 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3463 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
3464 res
= ieee80211_if_config(dev
);
3466 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
3467 "the low-level driver\n", dev
->name
);
3472 if (!is_valid_ether_addr(bssid
))
3473 ifsta
->bssid_set
= 0;
3475 ifsta
->bssid_set
= 1;
3480 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
3481 struct ieee80211_sub_if_data
*sdata
,
3484 struct sk_buff
*skb
;
3485 struct ieee80211_hdr
*nullfunc
;
3488 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
3490 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
3491 "frame\n", sdata
->dev
->name
);
3494 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3496 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
3497 memset(nullfunc
, 0, 24);
3498 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
3499 IEEE80211_FCTL_TODS
;
3501 fc
|= IEEE80211_FCTL_PM
;
3502 nullfunc
->frame_control
= cpu_to_le16(fc
);
3503 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3504 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
3505 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3507 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
3511 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
3513 struct ieee80211_local
*local
= hw_to_local(hw
);
3514 struct net_device
*dev
= local
->scan_dev
;
3515 struct ieee80211_sub_if_data
*sdata
;
3516 union iwreq_data wrqu
;
3518 local
->last_scan_completed
= jiffies
;
3520 local
->sta_scanning
= 0;
3522 if (ieee80211_hw_config(local
))
3523 printk(KERN_DEBUG
"%s: failed to restore operational"
3524 "channel after scan\n", dev
->name
);
3526 if (!(local
->hw
.flags
& IEEE80211_HW_NO_PROBE_FILTERING
) &&
3527 ieee80211_if_config(dev
))
3528 printk(KERN_DEBUG
"%s: failed to restore operational"
3529 "BSSID after scan\n", dev
->name
);
3531 memset(&wrqu
, 0, sizeof(wrqu
));
3532 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
3534 read_lock(&local
->sub_if_lock
);
3535 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
3537 /* No need to wake the master device. */
3538 if (sdata
->dev
== local
->mdev
)
3541 if (sdata
->type
== IEEE80211_IF_TYPE_STA
) {
3542 if (sdata
->u
.sta
.associated
)
3543 ieee80211_send_nullfunc(local
, sdata
, 0);
3544 ieee80211_sta_timer((unsigned long)sdata
);
3547 netif_wake_queue(sdata
->dev
);
3549 read_unlock(&local
->sub_if_lock
);
3551 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3552 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
3553 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3554 if (!ifsta
->bssid_set
||
3555 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3556 !ieee80211_sta_active_ibss(dev
)))
3557 ieee80211_sta_find_ibss(dev
, ifsta
);
3560 EXPORT_SYMBOL(ieee80211_scan_completed
);
3562 void ieee80211_sta_scan_work(struct work_struct
*work
)
3564 struct ieee80211_local
*local
=
3565 container_of(work
, struct ieee80211_local
, scan_work
.work
);
3566 struct net_device
*dev
= local
->scan_dev
;
3567 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3568 struct ieee80211_hw_mode
*mode
;
3569 struct ieee80211_channel
*chan
;
3571 unsigned long next_delay
= 0;
3573 if (!local
->sta_scanning
)
3576 switch (local
->scan_state
) {
3577 case SCAN_SET_CHANNEL
:
3578 mode
= local
->scan_hw_mode
;
3579 if (local
->scan_hw_mode
->list
.next
== &local
->modes_list
&&
3580 local
->scan_channel_idx
>= mode
->num_channels
) {
3581 ieee80211_scan_completed(local_to_hw(local
));
3584 skip
= !(local
->enabled_modes
& (1 << mode
->mode
));
3585 chan
= &mode
->channels
[local
->scan_channel_idx
];
3586 if (!(chan
->flag
& IEEE80211_CHAN_W_SCAN
) ||
3587 (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&&
3588 !(chan
->flag
& IEEE80211_CHAN_W_IBSS
)) ||
3589 (local
->hw_modes
& local
->enabled_modes
&
3590 (1 << MODE_IEEE80211G
) && mode
->mode
== MODE_IEEE80211B
))
3595 printk(KERN_DEBUG
"%s: scan channel %d (%d MHz)\n",
3596 dev
->name
, chan
->chan
, chan
->freq
);
3599 local
->scan_channel
= chan
;
3600 if (ieee80211_hw_config(local
)) {
3601 printk(KERN_DEBUG
"%s: failed to set channel "
3602 "%d (%d MHz) for scan\n", dev
->name
,
3603 chan
->chan
, chan
->freq
);
3608 local
->scan_channel_idx
++;
3609 if (local
->scan_channel_idx
>= local
->scan_hw_mode
->num_channels
) {
3610 if (local
->scan_hw_mode
->list
.next
!= &local
->modes_list
) {
3611 local
->scan_hw_mode
= list_entry(local
->scan_hw_mode
->list
.next
,
3612 struct ieee80211_hw_mode
,
3614 local
->scan_channel_idx
= 0;
3621 next_delay
= IEEE80211_PROBE_DELAY
+
3622 usecs_to_jiffies(local
->hw
.channel_change_time
);
3623 local
->scan_state
= SCAN_SEND_PROBE
;
3625 case SCAN_SEND_PROBE
:
3626 if (local
->scan_channel
->flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
) {
3627 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
3628 local
->scan_ssid_len
);
3629 next_delay
= IEEE80211_CHANNEL_TIME
;
3631 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
3632 local
->scan_state
= SCAN_SET_CHANNEL
;
3636 if (local
->sta_scanning
)
3637 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3642 static int ieee80211_sta_start_scan(struct net_device
*dev
,
3643 u8
*ssid
, size_t ssid_len
)
3645 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3646 struct ieee80211_sub_if_data
*sdata
;
3648 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
3651 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
3652 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
3655 * ScanType: ACTIVE, PASSIVE
3656 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
3657 * a Probe frame during active scanning
3659 * MinChannelTime (>= ProbeDelay), in TU
3660 * MaxChannelTime: (>= MinChannelTime), in TU
3663 /* MLME-SCAN.confirm
3665 * ResultCode: SUCCESS, INVALID_PARAMETERS
3668 if (local
->sta_scanning
) {
3669 if (local
->scan_dev
== dev
)
3674 if (local
->ops
->hw_scan
) {
3675 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
3678 local
->sta_scanning
= 1;
3679 local
->scan_dev
= dev
;
3684 local
->sta_scanning
= 1;
3686 read_lock(&local
->sub_if_lock
);
3687 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
3689 /* Don't stop the master interface, otherwise we can't transmit
3691 if (sdata
->dev
== local
->mdev
)
3694 netif_stop_queue(sdata
->dev
);
3695 if (sdata
->type
== IEEE80211_IF_TYPE_STA
&&
3696 sdata
->u
.sta
.associated
)
3697 ieee80211_send_nullfunc(local
, sdata
, 1);
3699 read_unlock(&local
->sub_if_lock
);
3702 local
->scan_ssid_len
= ssid_len
;
3703 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
3705 local
->scan_ssid_len
= 0;
3706 local
->scan_state
= SCAN_SET_CHANNEL
;
3707 local
->scan_hw_mode
= list_entry(local
->modes_list
.next
,
3708 struct ieee80211_hw_mode
,
3710 local
->scan_channel_idx
= 0;
3711 local
->scan_dev
= dev
;
3713 if (!(local
->hw
.flags
& IEEE80211_HW_NO_PROBE_FILTERING
) &&
3714 ieee80211_if_config(dev
))
3715 printk(KERN_DEBUG
"%s: failed to set BSSID for scan\n",
3718 /* TODO: start scan as soon as all nullfunc frames are ACKed */
3719 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3720 IEEE80211_CHANNEL_TIME
);
3726 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
3728 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3729 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3730 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3732 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
3733 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
3735 if (local
->sta_scanning
) {
3736 if (local
->scan_dev
== dev
)
3741 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
3742 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3747 ieee80211_sta_scan_result(struct net_device
*dev
,
3748 struct ieee80211_sta_bss
*bss
,
3749 char *current_ev
, char *end_buf
)
3751 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3752 struct iw_event iwe
;
3754 if (time_after(jiffies
,
3755 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
3758 if (!(local
->enabled_modes
& (1 << bss
->hw_mode
)))
3761 if (local
->scan_flags
& IEEE80211_SCAN_WPA_ONLY
&&
3762 !bss
->wpa_ie
&& !bss
->rsn_ie
)
3765 if (local
->scan_flags
& IEEE80211_SCAN_MATCH_SSID
&&
3766 (local
->scan_ssid_len
!= bss
->ssid_len
||
3767 memcmp(local
->scan_ssid
, bss
->ssid
, bss
->ssid_len
) != 0))
3770 memset(&iwe
, 0, sizeof(iwe
));
3771 iwe
.cmd
= SIOCGIWAP
;
3772 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
3773 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
3774 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3777 memset(&iwe
, 0, sizeof(iwe
));
3778 iwe
.cmd
= SIOCGIWESSID
;
3779 iwe
.u
.data
.length
= bss
->ssid_len
;
3780 iwe
.u
.data
.flags
= 1;
3781 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3784 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)) {
3785 memset(&iwe
, 0, sizeof(iwe
));
3786 iwe
.cmd
= SIOCGIWMODE
;
3787 if (bss
->capability
& WLAN_CAPABILITY_ESS
)
3788 iwe
.u
.mode
= IW_MODE_MASTER
;
3790 iwe
.u
.mode
= IW_MODE_ADHOC
;
3791 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3795 memset(&iwe
, 0, sizeof(iwe
));
3796 iwe
.cmd
= SIOCGIWFREQ
;
3797 iwe
.u
.freq
.m
= bss
->channel
;
3799 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3801 iwe
.u
.freq
.m
= bss
->freq
* 100000;
3803 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3806 memset(&iwe
, 0, sizeof(iwe
));
3808 iwe
.u
.qual
.qual
= bss
->signal
;
3809 iwe
.u
.qual
.level
= bss
->rssi
;
3810 iwe
.u
.qual
.noise
= bss
->noise
;
3811 iwe
.u
.qual
.updated
= local
->wstats_flags
;
3812 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3815 memset(&iwe
, 0, sizeof(iwe
));
3816 iwe
.cmd
= SIOCGIWENCODE
;
3817 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
3818 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
3820 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
3821 iwe
.u
.data
.length
= 0;
3822 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
3824 if (bss
&& bss
->wpa_ie
) {
3825 memset(&iwe
, 0, sizeof(iwe
));
3826 iwe
.cmd
= IWEVGENIE
;
3827 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
3828 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3832 if (bss
&& bss
->rsn_ie
) {
3833 memset(&iwe
, 0, sizeof(iwe
));
3834 iwe
.cmd
= IWEVGENIE
;
3835 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
3836 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3840 if (bss
&& bss
->supp_rates_len
> 0) {
3841 /* display all supported rates in readable format */
3842 char *p
= current_ev
+ IW_EV_LCP_LEN
;
3845 memset(&iwe
, 0, sizeof(iwe
));
3846 iwe
.cmd
= SIOCGIWRATE
;
3847 /* Those two flags are ignored... */
3848 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
3850 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
3851 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
3853 p
= iwe_stream_add_value(current_ev
, p
,
3854 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
3861 buf
= kmalloc(30, GFP_ATOMIC
);
3863 memset(&iwe
, 0, sizeof(iwe
));
3864 iwe
.cmd
= IWEVCUSTOM
;
3865 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
3866 iwe
.u
.data
.length
= strlen(buf
);
3867 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
3876 if (!(local
->scan_flags
& IEEE80211_SCAN_EXTRA_INFO
))
3879 buf
= kmalloc(100, GFP_ATOMIC
);
3883 memset(&iwe
, 0, sizeof(iwe
));
3884 iwe
.cmd
= IWEVCUSTOM
;
3885 sprintf(buf
, "bcn_int=%d", bss
->beacon_int
);
3886 iwe
.u
.data
.length
= strlen(buf
);
3887 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3890 memset(&iwe
, 0, sizeof(iwe
));
3891 iwe
.cmd
= IWEVCUSTOM
;
3892 sprintf(buf
, "capab=0x%04x", bss
->capability
);
3893 iwe
.u
.data
.length
= strlen(buf
);
3894 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3905 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
3907 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3908 char *current_ev
= buf
;
3909 char *end_buf
= buf
+ len
;
3910 struct ieee80211_sta_bss
*bss
;
3912 spin_lock_bh(&local
->sta_bss_lock
);
3913 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3914 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
3915 spin_unlock_bh(&local
->sta_bss_lock
);
3918 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
3921 spin_unlock_bh(&local
->sta_bss_lock
);
3922 return current_ev
- buf
;
3926 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
3928 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3929 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3930 kfree(ifsta
->extra_ie
);
3932 ifsta
->extra_ie
= NULL
;
3933 ifsta
->extra_ie_len
= 0;
3936 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
3937 if (!ifsta
->extra_ie
) {
3938 ifsta
->extra_ie_len
= 0;
3941 memcpy(ifsta
->extra_ie
, ie
, len
);
3942 ifsta
->extra_ie_len
= len
;
3947 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
3948 struct sk_buff
*skb
, u8
*bssid
,
3951 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3952 struct sta_info
*sta
;
3953 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3955 /* TODO: Could consider removing the least recently used entry and
3956 * allow new one to be added. */
3957 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
3958 if (net_ratelimit()) {
3959 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
3960 "entry " MAC_FMT
"\n", dev
->name
, MAC_ARG(addr
));
3965 printk(KERN_DEBUG
"%s: Adding new IBSS station " MAC_FMT
" (dev=%s)\n",
3966 local
->mdev
->name
, MAC_ARG(addr
), dev
->name
);
3968 sta
= sta_info_add(local
, dev
, addr
, GFP_ATOMIC
);
3972 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
3974 rate_control_rate_init(sta
, local
);
3976 return sta
; /* caller will call sta_info_put() */
3980 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
3982 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3983 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3985 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
3988 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
&&
3989 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
)
3992 ieee80211_send_deauth(dev
, ifsta
, reason
);
3993 ieee80211_set_disassoc(dev
, ifsta
, 1);
3998 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
4000 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4001 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4003 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
4006 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
4009 if (!ifsta
->associated
)
4012 ieee80211_send_disassoc(dev
, ifsta
, reason
);
4013 ieee80211_set_disassoc(dev
, ifsta
, 0);