2 * BSS client mode implementation
3 * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
15 * order BSS list by RSSI(?) ("quality of AP")
16 * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
19 #include <linux/delay.h>
20 #include <linux/if_ether.h>
21 #include <linux/skbuff.h>
22 #include <linux/netdevice.h>
23 #include <linux/if_arp.h>
24 #include <linux/wireless.h>
25 #include <linux/random.h>
26 #include <linux/etherdevice.h>
27 #include <net/iw_handler.h>
28 #include <asm/types.h>
30 #include <net/mac80211.h>
31 #include "ieee80211_i.h"
32 #include "ieee80211_rate.h"
33 #include "ieee80211_led.h"
35 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
36 #define IEEE80211_AUTH_MAX_TRIES 3
37 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
38 #define IEEE80211_ASSOC_MAX_TRIES 3
39 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
40 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
41 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
42 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
43 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
44 #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
46 #define IEEE80211_PROBE_DELAY (HZ / 33)
47 #define IEEE80211_CHANNEL_TIME (HZ / 33)
48 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
49 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
50 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
51 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
53 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
56 #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
58 #define ERP_INFO_USE_PROTECTION BIT(1)
60 /* mgmt header + 1 byte action code */
61 #define IEEE80211_MIN_ACTION_SIZE (24 + 1)
63 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
64 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
65 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
66 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
67 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
69 /* next values represent the buffer size for A-MPDU frame.
70 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
71 #define IEEE80211_MIN_AMPDU_BUF 0x8
72 #define IEEE80211_MAX_AMPDU_BUF 0x40
74 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
75 u8
*ssid
, size_t ssid_len
);
76 static struct ieee80211_sta_bss
*
77 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
78 u8
*ssid
, u8 ssid_len
);
79 static void ieee80211_rx_bss_put(struct net_device
*dev
,
80 struct ieee80211_sta_bss
*bss
);
81 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
82 struct ieee80211_if_sta
*ifsta
);
83 static int ieee80211_sta_wep_configured(struct net_device
*dev
);
84 static int ieee80211_sta_start_scan(struct net_device
*dev
,
85 u8
*ssid
, size_t ssid_len
);
86 static int ieee80211_sta_config_auth(struct net_device
*dev
,
87 struct ieee80211_if_sta
*ifsta
);
90 /* Parsed Information Elements */
91 struct ieee802_11_elems
{
109 /* length of them, respectively */
121 u8 ext_supp_rates_len
;
128 static void ieee802_11_parse_elems(u8
*start
, size_t len
,
129 struct ieee802_11_elems
*elems
)
134 memset(elems
, 0, sizeof(*elems
));
149 elems
->ssid_len
= elen
;
151 case WLAN_EID_SUPP_RATES
:
152 elems
->supp_rates
= pos
;
153 elems
->supp_rates_len
= elen
;
155 case WLAN_EID_FH_PARAMS
:
156 elems
->fh_params
= pos
;
157 elems
->fh_params_len
= elen
;
159 case WLAN_EID_DS_PARAMS
:
160 elems
->ds_params
= pos
;
161 elems
->ds_params_len
= elen
;
163 case WLAN_EID_CF_PARAMS
:
164 elems
->cf_params
= pos
;
165 elems
->cf_params_len
= elen
;
169 elems
->tim_len
= elen
;
171 case WLAN_EID_IBSS_PARAMS
:
172 elems
->ibss_params
= pos
;
173 elems
->ibss_params_len
= elen
;
175 case WLAN_EID_CHALLENGE
:
176 elems
->challenge
= pos
;
177 elems
->challenge_len
= elen
;
180 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
182 /* Microsoft OUI (00:50:F2) */
184 /* OUI Type 1 - WPA IE */
186 elems
->wpa_len
= elen
;
187 } else if (elen
>= 5 && pos
[3] == 2) {
189 elems
->wmm_info
= pos
;
190 elems
->wmm_info_len
= elen
;
191 } else if (pos
[4] == 1) {
192 elems
->wmm_param
= pos
;
193 elems
->wmm_param_len
= elen
;
200 elems
->rsn_len
= elen
;
202 case WLAN_EID_ERP_INFO
:
203 elems
->erp_info
= pos
;
204 elems
->erp_info_len
= elen
;
206 case WLAN_EID_EXT_SUPP_RATES
:
207 elems
->ext_supp_rates
= pos
;
208 elems
->ext_supp_rates_len
= elen
;
210 case WLAN_EID_HT_CAPABILITY
:
211 elems
->ht_cap_elem
= pos
;
212 elems
->ht_cap_elem_len
= elen
;
214 case WLAN_EID_HT_EXTRA_INFO
:
215 elems
->ht_info_elem
= pos
;
216 elems
->ht_info_elem_len
= elen
;
228 static int ecw2cw(int ecw
)
230 return (1 << ecw
) - 1;
233 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
234 struct ieee80211_if_sta
*ifsta
,
235 u8
*wmm_param
, size_t wmm_param_len
)
237 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
238 struct ieee80211_tx_queue_params params
;
243 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
245 count
= wmm_param
[6] & 0x0f;
246 if (count
== ifsta
->wmm_last_param_set
)
248 ifsta
->wmm_last_param_set
= count
;
251 left
= wmm_param_len
- 8;
253 memset(¶ms
, 0, sizeof(params
));
255 if (!local
->ops
->conf_tx
)
259 for (; left
>= 4; left
-= 4, pos
+= 4) {
260 int aci
= (pos
[0] >> 5) & 0x03;
261 int acm
= (pos
[0] >> 4) & 0x01;
266 queue
= IEEE80211_TX_QUEUE_DATA3
;
268 local
->wmm_acm
|= BIT(0) | BIT(3);
272 queue
= IEEE80211_TX_QUEUE_DATA1
;
274 local
->wmm_acm
|= BIT(4) | BIT(5);
278 queue
= IEEE80211_TX_QUEUE_DATA0
;
280 local
->wmm_acm
|= BIT(6) | BIT(7);
285 queue
= IEEE80211_TX_QUEUE_DATA2
;
287 local
->wmm_acm
|= BIT(1) | BIT(2);
292 params
.aifs
= pos
[0] & 0x0f;
293 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
294 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
295 params
.txop
= pos
[2] | (pos
[3] << 8);
296 #ifdef CONFIG_MAC80211_DEBUG
297 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
298 "cWmin=%d cWmax=%d txop=%d\n",
299 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
300 params
.cw_max
, params
.txop
);
302 /* TODO: handle ACM (block TX, fallback to next lowest allowed
304 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
305 printk(KERN_DEBUG
"%s: failed to set TX queue "
306 "parameters for queue %d\n", dev
->name
, queue
);
312 static u32
ieee80211_handle_erp_ie(struct ieee80211_sub_if_data
*sdata
,
315 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
316 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
317 bool use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
318 bool preamble_mode
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) != 0;
319 DECLARE_MAC_BUF(mac
);
322 if (use_protection
!= bss_conf
->use_cts_prot
) {
323 if (net_ratelimit()) {
324 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
327 use_protection
? "enabled" : "disabled",
328 print_mac(mac
, ifsta
->bssid
));
330 bss_conf
->use_cts_prot
= use_protection
;
331 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
334 if (preamble_mode
!= bss_conf
->use_short_preamble
) {
335 if (net_ratelimit()) {
336 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
339 (preamble_mode
== WLAN_ERP_PREAMBLE_SHORT
) ?
341 print_mac(mac
, ifsta
->bssid
));
343 bss_conf
->use_short_preamble
= preamble_mode
;
344 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
350 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap
*ht_cap_ie
,
351 struct ieee80211_ht_info
*ht_info
)
357 memset(ht_info
, 0, sizeof(*ht_info
));
360 u8 ampdu_info
= ht_cap_ie
->ampdu_params_info
;
362 ht_info
->ht_supported
= 1;
363 ht_info
->cap
= le16_to_cpu(ht_cap_ie
->cap_info
);
364 ht_info
->ampdu_factor
=
365 ampdu_info
& IEEE80211_HT_CAP_AMPDU_FACTOR
;
366 ht_info
->ampdu_density
=
367 (ampdu_info
& IEEE80211_HT_CAP_AMPDU_DENSITY
) >> 2;
368 memcpy(ht_info
->supp_mcs_set
, ht_cap_ie
->supp_mcs_set
, 16);
370 ht_info
->ht_supported
= 0;
375 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
376 struct ieee80211_ht_addt_info
*ht_add_info_ie
,
377 struct ieee80211_ht_bss_info
*bss_info
)
379 if (bss_info
== NULL
)
382 memset(bss_info
, 0, sizeof(*bss_info
));
384 if (ht_add_info_ie
) {
386 op_mode
= le16_to_cpu(ht_add_info_ie
->operation_mode
);
388 bss_info
->primary_channel
= ht_add_info_ie
->control_chan
;
389 bss_info
->bss_cap
= ht_add_info_ie
->ht_param
;
390 bss_info
->bss_op_mode
= (u8
)(op_mode
& 0xff);
396 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
397 struct ieee80211_if_sta
*ifsta
)
402 union iwreq_data wrqu
;
404 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
407 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
408 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
412 len
= sprintf(buf
, "ASSOCINFO(");
413 if (ifsta
->assocreq_ies
) {
414 len
+= sprintf(buf
+ len
, "ReqIEs=");
415 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
416 len
+= sprintf(buf
+ len
, "%02x",
417 ifsta
->assocreq_ies
[i
]);
420 if (ifsta
->assocresp_ies
) {
421 if (ifsta
->assocreq_ies
)
422 len
+= sprintf(buf
+ len
, " ");
423 len
+= sprintf(buf
+ len
, "RespIEs=");
424 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
425 len
+= sprintf(buf
+ len
, "%02x",
426 ifsta
->assocresp_ies
[i
]);
429 len
+= sprintf(buf
+ len
, ")");
431 if (len
> IW_CUSTOM_MAX
) {
432 len
= sprintf(buf
, "ASSOCRESPIE=");
433 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
434 len
+= sprintf(buf
+ len
, "%02x",
435 ifsta
->assocresp_ies
[i
]);
439 memset(&wrqu
, 0, sizeof(wrqu
));
440 wrqu
.data
.length
= len
;
441 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
447 static void ieee80211_set_associated(struct net_device
*dev
,
448 struct ieee80211_if_sta
*ifsta
,
451 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
452 struct ieee80211_local
*local
= sdata
->local
;
453 union iwreq_data wrqu
;
454 u32 changed
= BSS_CHANGED_ASSOC
;
457 struct ieee80211_sta_bss
*bss
;
459 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
461 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
464 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
465 local
->hw
.conf
.channel
->center_freq
,
466 ifsta
->ssid
, ifsta
->ssid_len
);
468 if (bss
->has_erp_value
)
469 changed
|= ieee80211_handle_erp_ie(
470 sdata
, bss
->erp_value
);
471 ieee80211_rx_bss_put(dev
, bss
);
474 netif_carrier_on(dev
);
475 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
476 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
477 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
478 ieee80211_sta_send_associnfo(dev
, ifsta
);
480 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
482 netif_carrier_off(dev
);
483 ieee80211_reset_erp_info(dev
);
484 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
486 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
487 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
488 ifsta
->last_probe
= jiffies
;
489 ieee80211_led_assoc(local
, assoc
);
491 sdata
->bss_conf
.assoc
= assoc
;
492 ieee80211_bss_info_change_notify(sdata
, changed
);
495 static void ieee80211_set_disassoc(struct net_device
*dev
,
496 struct ieee80211_if_sta
*ifsta
, int deauth
)
499 ifsta
->auth_tries
= 0;
500 ifsta
->assoc_tries
= 0;
501 ieee80211_set_associated(dev
, ifsta
, 0);
504 static void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
507 struct ieee80211_sub_if_data
*sdata
;
508 struct ieee80211_tx_packet_data
*pkt_data
;
510 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
511 skb
->dev
= sdata
->local
->mdev
;
512 skb_set_mac_header(skb
, 0);
513 skb_set_network_header(skb
, 0);
514 skb_set_transport_header(skb
, 0);
516 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
517 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
518 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
520 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
526 static void ieee80211_send_auth(struct net_device
*dev
,
527 struct ieee80211_if_sta
*ifsta
,
528 int transaction
, u8
*extra
, size_t extra_len
,
531 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
533 struct ieee80211_mgmt
*mgmt
;
535 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
536 sizeof(*mgmt
) + 6 + extra_len
);
538 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
539 "frame\n", dev
->name
);
542 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
544 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
545 memset(mgmt
, 0, 24 + 6);
546 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
547 IEEE80211_STYPE_AUTH
);
549 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
550 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
551 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
552 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
553 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
554 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
555 ifsta
->auth_transaction
= transaction
+ 1;
556 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
558 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
560 ieee80211_sta_tx(dev
, skb
, encrypt
);
564 static void ieee80211_authenticate(struct net_device
*dev
,
565 struct ieee80211_if_sta
*ifsta
)
567 DECLARE_MAC_BUF(mac
);
570 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
571 printk(KERN_DEBUG
"%s: authentication with AP %s"
573 dev
->name
, print_mac(mac
, ifsta
->bssid
));
574 ifsta
->state
= IEEE80211_DISABLED
;
578 ifsta
->state
= IEEE80211_AUTHENTICATE
;
579 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
580 dev
->name
, print_mac(mac
, ifsta
->bssid
));
582 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
584 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
588 static void ieee80211_send_assoc(struct net_device
*dev
,
589 struct ieee80211_if_sta
*ifsta
)
591 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
593 struct ieee80211_mgmt
*mgmt
;
597 struct ieee80211_sta_bss
*bss
;
599 struct ieee80211_supported_band
*sband
;
601 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
602 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
605 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
606 "frame\n", dev
->name
);
609 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
611 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
613 capab
= ifsta
->capab
;
615 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
) {
616 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
))
617 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
618 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
))
619 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
622 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
623 local
->hw
.conf
.channel
->center_freq
,
624 ifsta
->ssid
, ifsta
->ssid_len
);
626 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
627 capab
|= WLAN_CAPABILITY_PRIVACY
;
631 ieee80211_rx_bss_put(dev
, bss
);
634 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
636 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
637 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
638 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
640 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
642 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
643 IEEE80211_STYPE_REASSOC_REQ
);
644 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
645 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
646 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
650 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
651 IEEE80211_STYPE_ASSOC_REQ
);
652 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
653 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
657 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
658 *pos
++ = WLAN_EID_SSID
;
659 *pos
++ = ifsta
->ssid_len
;
660 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
662 len
= sband
->n_bitrates
;
665 pos
= skb_put(skb
, len
+ 2);
666 *pos
++ = WLAN_EID_SUPP_RATES
;
668 for (i
= 0; i
< len
; i
++) {
669 int rate
= sband
->bitrates
[i
].bitrate
;
670 *pos
++ = (u8
) (rate
/ 5);
673 if (sband
->n_bitrates
> len
) {
674 pos
= skb_put(skb
, sband
->n_bitrates
- len
+ 2);
675 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
676 *pos
++ = sband
->n_bitrates
- len
;
677 for (i
= len
; i
< sband
->n_bitrates
; i
++) {
678 int rate
= sband
->bitrates
[i
].bitrate
;
679 *pos
++ = (u8
) (rate
/ 5);
683 if (ifsta
->extra_ie
) {
684 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
685 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
688 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
689 pos
= skb_put(skb
, 9);
690 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
691 *pos
++ = 7; /* len */
692 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
695 *pos
++ = 2; /* WME */
696 *pos
++ = 0; /* WME info */
697 *pos
++ = 1; /* WME ver */
700 /* wmm support is a must to HT */
701 if (wmm
&& sband
->ht_info
.ht_supported
) {
702 __le16 tmp
= cpu_to_le16(sband
->ht_info
.cap
);
703 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
)+2);
704 *pos
++ = WLAN_EID_HT_CAPABILITY
;
705 *pos
++ = sizeof(struct ieee80211_ht_cap
);
706 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
707 memcpy(pos
, &tmp
, sizeof(u16
));
709 /* TODO: needs a define here for << 2 */
710 *pos
++ = sband
->ht_info
.ampdu_factor
|
711 (sband
->ht_info
.ampdu_density
<< 2);
712 memcpy(pos
, sband
->ht_info
.supp_mcs_set
, 16);
715 kfree(ifsta
->assocreq_ies
);
716 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
717 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
718 if (ifsta
->assocreq_ies
)
719 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
721 ieee80211_sta_tx(dev
, skb
, 0);
725 static void ieee80211_send_deauth(struct net_device
*dev
,
726 struct ieee80211_if_sta
*ifsta
, u16 reason
)
728 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
730 struct ieee80211_mgmt
*mgmt
;
732 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
734 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
735 "frame\n", dev
->name
);
738 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
740 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
742 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
743 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
744 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
745 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
746 IEEE80211_STYPE_DEAUTH
);
748 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
750 ieee80211_sta_tx(dev
, skb
, 0);
754 static void ieee80211_send_disassoc(struct net_device
*dev
,
755 struct ieee80211_if_sta
*ifsta
, u16 reason
)
757 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
759 struct ieee80211_mgmt
*mgmt
;
761 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
763 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
764 "frame\n", dev
->name
);
767 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
769 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
771 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
772 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
773 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
774 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
775 IEEE80211_STYPE_DISASSOC
);
777 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
779 ieee80211_sta_tx(dev
, skb
, 0);
783 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
784 struct ieee80211_if_sta
*ifsta
)
786 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
787 struct ieee80211_sta_bss
*bss
;
792 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
795 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
796 local
->hw
.conf
.channel
->center_freq
,
797 ifsta
->ssid
, ifsta
->ssid_len
);
801 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
802 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
803 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
805 ieee80211_rx_bss_put(dev
, bss
);
807 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
814 static void ieee80211_associate(struct net_device
*dev
,
815 struct ieee80211_if_sta
*ifsta
)
817 DECLARE_MAC_BUF(mac
);
819 ifsta
->assoc_tries
++;
820 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
821 printk(KERN_DEBUG
"%s: association with AP %s"
823 dev
->name
, print_mac(mac
, ifsta
->bssid
));
824 ifsta
->state
= IEEE80211_DISABLED
;
828 ifsta
->state
= IEEE80211_ASSOCIATE
;
829 printk(KERN_DEBUG
"%s: associate with AP %s\n",
830 dev
->name
, print_mac(mac
, ifsta
->bssid
));
831 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
832 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
833 "mixed-cell disabled - abort association\n", dev
->name
);
834 ifsta
->state
= IEEE80211_DISABLED
;
838 ieee80211_send_assoc(dev
, ifsta
);
840 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
844 static void ieee80211_associated(struct net_device
*dev
,
845 struct ieee80211_if_sta
*ifsta
)
847 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
848 struct sta_info
*sta
;
850 DECLARE_MAC_BUF(mac
);
852 /* TODO: start monitoring current AP signal quality and number of
853 * missed beacons. Scan other channels every now and then and search
855 /* TODO: remove expired BSSes */
857 ifsta
->state
= IEEE80211_ASSOCIATED
;
859 sta
= sta_info_get(local
, ifsta
->bssid
);
861 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
862 dev
->name
, print_mac(mac
, ifsta
->bssid
));
866 if (time_after(jiffies
,
867 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
868 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
869 printk(KERN_DEBUG
"%s: No ProbeResp from "
870 "current AP %s - assume out of "
872 dev
->name
, print_mac(mac
, ifsta
->bssid
));
876 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
878 local
->scan_ssid_len
);
879 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
881 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
882 if (time_after(jiffies
, ifsta
->last_probe
+
883 IEEE80211_PROBE_INTERVAL
)) {
884 ifsta
->last_probe
= jiffies
;
885 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
893 ifsta
->state
= IEEE80211_DISABLED
;
894 ieee80211_set_associated(dev
, ifsta
, 0);
896 mod_timer(&ifsta
->timer
, jiffies
+
897 IEEE80211_MONITORING_INTERVAL
);
902 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
903 u8
*ssid
, size_t ssid_len
)
905 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
906 struct ieee80211_supported_band
*sband
;
908 struct ieee80211_mgmt
*mgmt
;
909 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
912 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
914 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
915 "request\n", dev
->name
);
918 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
920 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
922 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
923 IEEE80211_STYPE_PROBE_REQ
);
924 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
926 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
927 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
929 memset(mgmt
->da
, 0xff, ETH_ALEN
);
930 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
932 pos
= skb_put(skb
, 2 + ssid_len
);
933 *pos
++ = WLAN_EID_SSID
;
935 memcpy(pos
, ssid
, ssid_len
);
937 supp_rates
= skb_put(skb
, 2);
938 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
940 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
942 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
943 struct ieee80211_rate
*rate
= &sband
->bitrates
[i
];
945 pos
= skb_put(skb
, 1);
947 } else if (supp_rates
[1] == 8) {
948 esupp_rates
= skb_put(skb
, 3);
949 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
951 pos
= &esupp_rates
[2];
953 pos
= skb_put(skb
, 1);
956 *pos
= rate
->bitrate
/ 5;
959 ieee80211_sta_tx(dev
, skb
, 0);
963 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
965 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
966 if (!sdata
|| !sdata
->default_key
||
967 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
973 static void ieee80211_auth_completed(struct net_device
*dev
,
974 struct ieee80211_if_sta
*ifsta
)
976 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
977 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
978 ieee80211_associate(dev
, ifsta
);
982 static void ieee80211_auth_challenge(struct net_device
*dev
,
983 struct ieee80211_if_sta
*ifsta
,
984 struct ieee80211_mgmt
*mgmt
,
988 struct ieee802_11_elems elems
;
990 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
991 pos
= mgmt
->u
.auth
.variable
;
992 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
993 if (!elems
.challenge
) {
994 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
995 "frame\n", dev
->name
);
998 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
999 elems
.challenge_len
+ 2, 1);
1002 static void ieee80211_send_addba_resp(struct net_device
*dev
, u8
*da
, u16 tid
,
1003 u8 dialog_token
, u16 status
, u16 policy
,
1004 u16 buf_size
, u16 timeout
)
1006 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1007 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1008 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1009 struct sk_buff
*skb
;
1010 struct ieee80211_mgmt
*mgmt
;
1013 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1014 sizeof(mgmt
->u
.action
.u
.addba_resp
));
1016 printk(KERN_DEBUG
"%s: failed to allocate buffer "
1017 "for addba resp frame\n", dev
->name
);
1021 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1022 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1023 memset(mgmt
, 0, 24);
1024 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1025 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1026 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1027 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1029 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1030 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1031 IEEE80211_STYPE_ACTION
);
1033 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
1034 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1035 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
1036 mgmt
->u
.action
.u
.addba_resp
.dialog_token
= dialog_token
;
1038 capab
= (u16
)(policy
<< 1); /* bit 1 aggregation policy */
1039 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1040 capab
|= (u16
)(buf_size
<< 6); /* bit 15:6 max size of aggregation */
1042 mgmt
->u
.action
.u
.addba_resp
.capab
= cpu_to_le16(capab
);
1043 mgmt
->u
.action
.u
.addba_resp
.timeout
= cpu_to_le16(timeout
);
1044 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
1046 ieee80211_sta_tx(dev
, skb
, 0);
1051 void ieee80211_send_addba_request(struct net_device
*dev
, const u8
*da
,
1052 u16 tid
, u8 dialog_token
, u16 start_seq_num
,
1053 u16 agg_size
, u16 timeout
)
1055 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1056 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1057 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1058 struct sk_buff
*skb
;
1059 struct ieee80211_mgmt
*mgmt
;
1062 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1063 sizeof(mgmt
->u
.action
.u
.addba_req
));
1067 printk(KERN_ERR
"%s: failed to allocate buffer "
1068 "for addba request frame\n", dev
->name
);
1071 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1072 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1073 memset(mgmt
, 0, 24);
1074 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1075 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1076 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1077 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1079 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1081 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1082 IEEE80211_STYPE_ACTION
);
1084 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_req
));
1086 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1087 mgmt
->u
.action
.u
.addba_req
.action_code
= WLAN_ACTION_ADDBA_REQ
;
1089 mgmt
->u
.action
.u
.addba_req
.dialog_token
= dialog_token
;
1090 capab
= (u16
)(1 << 1); /* bit 1 aggregation policy */
1091 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1092 capab
|= (u16
)(agg_size
<< 6); /* bit 15:6 max size of aggergation */
1094 mgmt
->u
.action
.u
.addba_req
.capab
= cpu_to_le16(capab
);
1096 mgmt
->u
.action
.u
.addba_req
.timeout
= cpu_to_le16(timeout
);
1097 mgmt
->u
.action
.u
.addba_req
.start_seq_num
=
1098 cpu_to_le16(start_seq_num
<< 4);
1100 ieee80211_sta_tx(dev
, skb
, 0);
1103 static void ieee80211_sta_process_addba_request(struct net_device
*dev
,
1104 struct ieee80211_mgmt
*mgmt
,
1107 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1108 struct ieee80211_hw
*hw
= &local
->hw
;
1109 struct ieee80211_conf
*conf
= &hw
->conf
;
1110 struct sta_info
*sta
;
1111 struct tid_ampdu_rx
*tid_agg_rx
;
1112 u16 capab
, tid
, timeout
, ba_policy
, buf_size
, start_seq_num
, status
;
1114 int ret
= -EOPNOTSUPP
;
1115 DECLARE_MAC_BUF(mac
);
1117 sta
= sta_info_get(local
, mgmt
->sa
);
1121 /* extract session parameters from addba request frame */
1122 dialog_token
= mgmt
->u
.action
.u
.addba_req
.dialog_token
;
1123 timeout
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.timeout
);
1125 le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.start_seq_num
) >> 4;
1127 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.capab
);
1128 ba_policy
= (capab
& IEEE80211_ADDBA_PARAM_POLICY_MASK
) >> 1;
1129 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1130 buf_size
= (capab
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
) >> 6;
1132 status
= WLAN_STATUS_REQUEST_DECLINED
;
1134 /* sanity check for incoming parameters:
1135 * check if configuration can support the BA policy
1136 * and if buffer size does not exceeds max value */
1137 if (((ba_policy
!= 1)
1138 && (!(conf
->ht_conf
.cap
& IEEE80211_HT_CAP_DELAY_BA
)))
1139 || (buf_size
> IEEE80211_MAX_AMPDU_BUF
)) {
1140 status
= WLAN_STATUS_INVALID_QOS_PARAM
;
1141 #ifdef CONFIG_MAC80211_HT_DEBUG
1142 if (net_ratelimit())
1143 printk(KERN_DEBUG
"Block Ack Req with bad params from "
1144 "%s on tid %u. policy %d, buffer size %d\n",
1145 print_mac(mac
, mgmt
->sa
), tid
, ba_policy
,
1147 #endif /* CONFIG_MAC80211_HT_DEBUG */
1150 /* determine default buffer size */
1151 if (buf_size
== 0) {
1152 struct ieee80211_supported_band
*sband
;
1154 sband
= local
->hw
.wiphy
->bands
[conf
->channel
->band
];
1155 buf_size
= IEEE80211_MIN_AMPDU_BUF
;
1156 buf_size
= buf_size
<< sband
->ht_info
.ampdu_factor
;
1159 tid_agg_rx
= &sta
->ampdu_mlme
.tid_rx
[tid
];
1161 /* examine state machine */
1162 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1164 if (tid_agg_rx
->state
!= HT_AGG_STATE_IDLE
) {
1165 #ifdef CONFIG_MAC80211_HT_DEBUG
1166 if (net_ratelimit())
1167 printk(KERN_DEBUG
"unexpected Block Ack Req from "
1169 print_mac(mac
, mgmt
->sa
), tid
);
1170 #endif /* CONFIG_MAC80211_HT_DEBUG */
1174 /* prepare reordering buffer */
1175 tid_agg_rx
->reorder_buf
=
1176 kmalloc(buf_size
* sizeof(struct sk_buf
*), GFP_ATOMIC
);
1177 if (!tid_agg_rx
->reorder_buf
) {
1178 if (net_ratelimit())
1179 printk(KERN_ERR
"can not allocate reordering buffer "
1180 "to tid %d\n", tid
);
1183 memset(tid_agg_rx
->reorder_buf
, 0,
1184 buf_size
* sizeof(struct sk_buf
*));
1186 if (local
->ops
->ampdu_action
)
1187 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_START
,
1188 sta
->addr
, tid
, &start_seq_num
);
1189 #ifdef CONFIG_MAC80211_HT_DEBUG
1190 printk(KERN_DEBUG
"Rx A-MPDU on tid %d result %d", tid
, ret
);
1191 #endif /* CONFIG_MAC80211_HT_DEBUG */
1194 kfree(tid_agg_rx
->reorder_buf
);
1198 /* change state and send addba resp */
1199 tid_agg_rx
->state
= HT_AGG_STATE_OPERATIONAL
;
1200 tid_agg_rx
->dialog_token
= dialog_token
;
1201 tid_agg_rx
->ssn
= start_seq_num
;
1202 tid_agg_rx
->head_seq_num
= start_seq_num
;
1203 tid_agg_rx
->buf_size
= buf_size
;
1204 tid_agg_rx
->timeout
= timeout
;
1205 tid_agg_rx
->stored_mpdu_num
= 0;
1206 status
= WLAN_STATUS_SUCCESS
;
1208 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1211 ieee80211_send_addba_resp(sta
->dev
, sta
->addr
, tid
, dialog_token
,
1212 status
, 1, buf_size
, timeout
);
1216 static void ieee80211_sta_process_addba_resp(struct net_device
*dev
,
1217 struct ieee80211_mgmt
*mgmt
,
1220 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1221 struct ieee80211_hw
*hw
= &local
->hw
;
1222 struct sta_info
*sta
;
1227 sta
= sta_info_get(local
, mgmt
->sa
);
1231 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.capab
);
1232 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1234 state
= &sta
->ampdu_mlme
.tid_tx
[tid
].state
;
1236 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1238 if (mgmt
->u
.action
.u
.addba_resp
.dialog_token
!=
1239 sta
->ampdu_mlme
.tid_tx
[tid
].dialog_token
) {
1240 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1241 #ifdef CONFIG_MAC80211_HT_DEBUG
1242 printk(KERN_DEBUG
"wrong addBA response token, tid %d\n", tid
);
1243 #endif /* CONFIG_MAC80211_HT_DEBUG */
1248 del_timer_sync(&sta
->ampdu_mlme
.tid_tx
[tid
].addba_resp_timer
);
1249 #ifdef CONFIG_MAC80211_HT_DEBUG
1250 printk(KERN_DEBUG
"switched off addBA timer for tid %d \n", tid
);
1251 #endif /* CONFIG_MAC80211_HT_DEBUG */
1252 if (le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.status
)
1253 == WLAN_STATUS_SUCCESS
) {
1254 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1255 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1256 printk(KERN_DEBUG
"state not HT_ADDBA_REQUESTED_MSK:"
1262 if (*state
& HT_ADDBA_RECEIVED_MSK
)
1263 printk(KERN_DEBUG
"double addBA response\n");
1265 *state
|= HT_ADDBA_RECEIVED_MSK
;
1266 sta
->ampdu_mlme
.tid_tx
[tid
].addba_req_num
= 0;
1268 if (*state
== HT_AGG_STATE_OPERATIONAL
) {
1269 printk(KERN_DEBUG
"Aggregation on for tid %d \n", tid
);
1270 ieee80211_wake_queue(hw
, sta
->tid_to_tx_q
[tid
]);
1273 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1274 printk(KERN_DEBUG
"recipient accepted agg: tid %d \n", tid
);
1276 printk(KERN_DEBUG
"recipient rejected agg: tid %d \n", tid
);
1278 sta
->ampdu_mlme
.tid_tx
[tid
].addba_req_num
++;
1279 /* this will allow the state check in stop_BA_session */
1280 *state
= HT_AGG_STATE_OPERATIONAL
;
1281 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1282 ieee80211_stop_tx_ba_session(hw
, sta
->addr
, tid
,
1283 WLAN_BACK_INITIATOR
);
1288 void ieee80211_send_delba(struct net_device
*dev
, const u8
*da
, u16 tid
,
1289 u16 initiator
, u16 reason_code
)
1291 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1292 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1293 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1294 struct sk_buff
*skb
;
1295 struct ieee80211_mgmt
*mgmt
;
1298 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1299 sizeof(mgmt
->u
.action
.u
.delba
));
1302 printk(KERN_ERR
"%s: failed to allocate buffer "
1303 "for delba frame\n", dev
->name
);
1307 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1308 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1309 memset(mgmt
, 0, 24);
1310 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1311 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1312 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1313 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1315 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1316 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1317 IEEE80211_STYPE_ACTION
);
1319 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.delba
));
1321 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1322 mgmt
->u
.action
.u
.delba
.action_code
= WLAN_ACTION_DELBA
;
1323 params
= (u16
)(initiator
<< 11); /* bit 11 initiator */
1324 params
|= (u16
)(tid
<< 12); /* bit 15:12 TID number */
1326 mgmt
->u
.action
.u
.delba
.params
= cpu_to_le16(params
);
1327 mgmt
->u
.action
.u
.delba
.reason_code
= cpu_to_le16(reason_code
);
1329 ieee80211_sta_tx(dev
, skb
, 0);
1332 void ieee80211_sta_stop_rx_ba_session(struct net_device
*dev
, u8
*ra
, u16 tid
,
1333 u16 initiator
, u16 reason
)
1335 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1336 struct ieee80211_hw
*hw
= &local
->hw
;
1337 struct sta_info
*sta
;
1340 sta
= sta_info_get(local
, ra
);
1344 /* check if TID is in operational state */
1345 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1346 if (sta
->ampdu_mlme
.tid_rx
[tid
].state
1347 != HT_AGG_STATE_OPERATIONAL
) {
1348 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1352 sta
->ampdu_mlme
.tid_rx
[tid
].state
=
1353 HT_AGG_STATE_REQ_STOP_BA_MSK
|
1354 (initiator
<< HT_AGG_STATE_INITIATOR_SHIFT
);
1355 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1357 /* stop HW Rx aggregation. ampdu_action existence
1358 * already verified in session init so we add the BUG_ON */
1359 BUG_ON(!local
->ops
->ampdu_action
);
1361 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_STOP
,
1364 printk(KERN_DEBUG
"HW problem - can not stop rx "
1365 "aggergation for tid %d\n", tid
);
1367 /* shutdown timer has not expired */
1368 if (initiator
!= WLAN_BACK_TIMER
)
1369 del_timer_sync(&sta
->ampdu_mlme
.tid_rx
[tid
].
1372 /* check if this is a self generated aggregation halt */
1373 if (initiator
== WLAN_BACK_RECIPIENT
|| initiator
== WLAN_BACK_TIMER
)
1374 ieee80211_send_delba(dev
, ra
, tid
, 0, reason
);
1376 /* free the reordering buffer */
1377 for (i
= 0; i
< sta
->ampdu_mlme
.tid_rx
[tid
].buf_size
; i
++) {
1378 if (sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
[i
]) {
1379 /* release the reordered frames */
1380 dev_kfree_skb(sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
[i
]);
1381 sta
->ampdu_mlme
.tid_rx
[tid
].stored_mpdu_num
--;
1382 sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
[i
] = NULL
;
1385 kfree(sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
);
1387 sta
->ampdu_mlme
.tid_rx
[tid
].state
= HT_AGG_STATE_IDLE
;
1392 static void ieee80211_sta_process_delba(struct net_device
*dev
,
1393 struct ieee80211_mgmt
*mgmt
, size_t len
)
1395 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1396 struct sta_info
*sta
;
1399 DECLARE_MAC_BUF(mac
);
1401 sta
= sta_info_get(local
, mgmt
->sa
);
1405 params
= le16_to_cpu(mgmt
->u
.action
.u
.delba
.params
);
1406 tid
= (params
& IEEE80211_DELBA_PARAM_TID_MASK
) >> 12;
1407 initiator
= (params
& IEEE80211_DELBA_PARAM_INITIATOR_MASK
) >> 11;
1409 #ifdef CONFIG_MAC80211_HT_DEBUG
1410 if (net_ratelimit())
1411 printk(KERN_DEBUG
"delba from %s (%s) tid %d reason code %d\n",
1412 print_mac(mac
, mgmt
->sa
),
1413 initiator
? "recipient" : "initiator", tid
,
1414 mgmt
->u
.action
.u
.delba
.reason_code
);
1415 #endif /* CONFIG_MAC80211_HT_DEBUG */
1417 if (initiator
== WLAN_BACK_INITIATOR
)
1418 ieee80211_sta_stop_rx_ba_session(dev
, sta
->addr
, tid
,
1419 WLAN_BACK_INITIATOR
, 0);
1420 else { /* WLAN_BACK_RECIPIENT */
1421 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1422 sta
->ampdu_mlme
.tid_tx
[tid
].state
=
1423 HT_AGG_STATE_OPERATIONAL
;
1424 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1425 ieee80211_stop_tx_ba_session(&local
->hw
, sta
->addr
, tid
,
1426 WLAN_BACK_RECIPIENT
);
1432 * After sending add Block Ack request we activated a timer until
1433 * add Block Ack response will arrive from the recipient.
1434 * If this timer expires sta_addba_resp_timer_expired will be executed.
1436 void sta_addba_resp_timer_expired(unsigned long data
)
1438 /* not an elegant detour, but there is no choice as the timer passes
1439 * only one argument, and both sta_info and TID are needed, so init
1440 * flow in sta_info_add gives the TID as data, while the timer_to_id
1441 * array gives the sta through container_of */
1442 u16 tid
= *(int *)data
;
1443 struct sta_info
*temp_sta
= container_of((void *)data
,
1444 struct sta_info
, timer_to_tid
[tid
]);
1446 struct ieee80211_local
*local
= temp_sta
->local
;
1447 struct ieee80211_hw
*hw
= &local
->hw
;
1448 struct sta_info
*sta
;
1451 sta
= sta_info_get(local
, temp_sta
->addr
);
1455 state
= &sta
->ampdu_mlme
.tid_tx
[tid
].state
;
1456 /* check if the TID waits for addBA response */
1457 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1458 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1459 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1460 *state
= HT_AGG_STATE_IDLE
;
1461 printk(KERN_DEBUG
"timer expired on tid %d but we are not "
1462 "expecting addBA response there", tid
);
1463 goto timer_expired_exit
;
1466 printk(KERN_DEBUG
"addBA response timer expired on tid %d\n", tid
);
1468 /* go through the state check in stop_BA_session */
1469 *state
= HT_AGG_STATE_OPERATIONAL
;
1470 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1471 ieee80211_stop_tx_ba_session(hw
, temp_sta
->addr
, tid
,
1472 WLAN_BACK_INITIATOR
);
1479 * After receiving Block Ack Request (BAR) we activated a
1480 * timer after each frame arrives from the originator.
1481 * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
1483 void sta_rx_agg_session_timer_expired(unsigned long data
)
1485 /* not an elegant detour, but there is no choice as the timer passes
1486 * only one argument, and verious sta_info are needed here, so init
1487 * flow in sta_info_add gives the TID as data, while the timer_to_id
1488 * array gives the sta through container_of */
1489 u8
*ptid
= (u8
*)data
;
1490 u8
*timer_to_id
= ptid
- *ptid
;
1491 struct sta_info
*sta
= container_of(timer_to_id
, struct sta_info
,
1494 printk(KERN_DEBUG
"rx session timer expired on tid %d\n", (u16
)*ptid
);
1495 ieee80211_sta_stop_rx_ba_session(sta
->dev
, sta
->addr
, (u16
)*ptid
,
1497 WLAN_REASON_QSTA_TIMEOUT
);
1501 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1502 struct ieee80211_if_sta
*ifsta
,
1503 struct ieee80211_mgmt
*mgmt
,
1506 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1507 u16 auth_alg
, auth_transaction
, status_code
;
1508 DECLARE_MAC_BUF(mac
);
1510 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1511 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
) {
1512 printk(KERN_DEBUG
"%s: authentication frame received from "
1513 "%s, but not in authenticate state - ignored\n",
1514 dev
->name
, print_mac(mac
, mgmt
->sa
));
1519 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
1520 "received from %s - ignored\n",
1521 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1525 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1526 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1527 printk(KERN_DEBUG
"%s: authentication frame received from "
1528 "unknown AP (SA=%s BSSID=%s) - "
1529 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1530 print_mac(mac
, mgmt
->bssid
));
1534 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1535 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
1536 printk(KERN_DEBUG
"%s: authentication frame received from "
1537 "unknown BSSID (SA=%s BSSID=%s) - "
1538 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1539 print_mac(mac
, mgmt
->bssid
));
1543 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1544 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1545 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1547 printk(KERN_DEBUG
"%s: RX authentication from %s (alg=%d "
1548 "transaction=%d status=%d)\n",
1549 dev
->name
, print_mac(mac
, mgmt
->sa
), auth_alg
,
1550 auth_transaction
, status_code
);
1552 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
1553 /* IEEE 802.11 standard does not require authentication in IBSS
1554 * networks and most implementations do not seem to use it.
1555 * However, try to reply to authentication attempts if someone
1556 * has actually implemented this.
1557 * TODO: Could implement shared key authentication. */
1558 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
1559 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
1560 "frame (alg=%d transaction=%d)\n",
1561 dev
->name
, auth_alg
, auth_transaction
);
1564 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1567 if (auth_alg
!= ifsta
->auth_alg
||
1568 auth_transaction
!= ifsta
->auth_transaction
) {
1569 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1570 "(alg=%d transaction=%d)\n",
1571 dev
->name
, auth_alg
, auth_transaction
);
1575 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1576 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1577 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1578 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1580 const int num_algs
= ARRAY_SIZE(algs
);
1582 algs
[0] = algs
[1] = algs
[2] = 0xff;
1583 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1584 algs
[0] = WLAN_AUTH_OPEN
;
1585 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1586 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1587 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1588 algs
[2] = WLAN_AUTH_LEAP
;
1589 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1591 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1595 for (i
= 0; i
< num_algs
; i
++) {
1597 if (pos
>= num_algs
)
1599 if (algs
[pos
] == ifsta
->auth_alg
||
1602 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1603 !ieee80211_sta_wep_configured(dev
))
1605 ifsta
->auth_alg
= algs
[pos
];
1606 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1608 dev
->name
, ifsta
->auth_alg
);
1615 switch (ifsta
->auth_alg
) {
1616 case WLAN_AUTH_OPEN
:
1617 case WLAN_AUTH_LEAP
:
1618 ieee80211_auth_completed(dev
, ifsta
);
1620 case WLAN_AUTH_SHARED_KEY
:
1621 if (ifsta
->auth_transaction
== 4)
1622 ieee80211_auth_completed(dev
, ifsta
);
1624 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1630 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1631 struct ieee80211_if_sta
*ifsta
,
1632 struct ieee80211_mgmt
*mgmt
,
1636 DECLARE_MAC_BUF(mac
);
1639 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1640 "received from %s - ignored\n",
1641 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1645 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1646 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1647 "unknown AP (SA=%s BSSID=%s) - "
1648 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1649 print_mac(mac
, mgmt
->bssid
));
1653 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1655 printk(KERN_DEBUG
"%s: RX deauthentication from %s"
1657 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1659 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1660 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1663 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1664 ifsta
->state
== IEEE80211_ASSOCIATE
||
1665 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1666 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1667 mod_timer(&ifsta
->timer
, jiffies
+
1668 IEEE80211_RETRY_AUTH_INTERVAL
);
1671 ieee80211_set_disassoc(dev
, ifsta
, 1);
1672 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1676 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1677 struct ieee80211_if_sta
*ifsta
,
1678 struct ieee80211_mgmt
*mgmt
,
1682 DECLARE_MAC_BUF(mac
);
1685 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1686 "received from %s - ignored\n",
1687 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1691 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1692 printk(KERN_DEBUG
"%s: disassociation frame received from "
1693 "unknown AP (SA=%s BSSID=%s) - "
1694 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1695 print_mac(mac
, mgmt
->bssid
));
1699 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1701 printk(KERN_DEBUG
"%s: RX disassociation from %s"
1703 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1705 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1706 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1708 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1709 ifsta
->state
= IEEE80211_ASSOCIATE
;
1710 mod_timer(&ifsta
->timer
, jiffies
+
1711 IEEE80211_RETRY_AUTH_INTERVAL
);
1714 ieee80211_set_disassoc(dev
, ifsta
, 0);
1718 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
1719 struct ieee80211_if_sta
*ifsta
,
1720 struct ieee80211_mgmt
*mgmt
,
1724 struct ieee80211_local
*local
= sdata
->local
;
1725 struct net_device
*dev
= sdata
->dev
;
1726 struct ieee80211_supported_band
*sband
;
1727 struct sta_info
*sta
;
1728 u64 rates
, basic_rates
;
1729 u16 capab_info
, status_code
, aid
;
1730 struct ieee802_11_elems elems
;
1731 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
1734 DECLARE_MAC_BUF(mac
);
1735 bool have_higher_than_11mbit
= false;
1737 /* AssocResp and ReassocResp have identical structure, so process both
1738 * of them in this function. */
1740 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1741 printk(KERN_DEBUG
"%s: association frame received from "
1742 "%s, but not in associate state - ignored\n",
1743 dev
->name
, print_mac(mac
, mgmt
->sa
));
1748 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1749 "received from %s - ignored\n",
1750 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1754 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1755 printk(KERN_DEBUG
"%s: association frame received from "
1756 "unknown AP (SA=%s BSSID=%s) - "
1757 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1758 print_mac(mac
, mgmt
->bssid
));
1762 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1763 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1764 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1766 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
1767 "status=%d aid=%d)\n",
1768 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
1769 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
1771 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1772 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1773 dev
->name
, status_code
);
1774 /* if this was a reassociation, ensure we try a "full"
1775 * association next time. This works around some broken APs
1776 * which do not correctly reject reassociation requests. */
1777 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1781 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1782 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1783 "set\n", dev
->name
, aid
);
1784 aid
&= ~(BIT(15) | BIT(14));
1786 pos
= mgmt
->u
.assoc_resp
.variable
;
1787 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1789 if (!elems
.supp_rates
) {
1790 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1795 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1797 ifsta
->ap_capab
= capab_info
;
1799 kfree(ifsta
->assocresp_ies
);
1800 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1801 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1802 if (ifsta
->assocresp_ies
)
1803 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1805 /* Add STA entry for the AP */
1806 sta
= sta_info_get(local
, ifsta
->bssid
);
1808 struct ieee80211_sta_bss
*bss
;
1809 sta
= sta_info_add(local
, dev
, ifsta
->bssid
, GFP_KERNEL
);
1811 printk(KERN_DEBUG
"%s: failed to add STA entry for the"
1812 " AP\n", dev
->name
);
1815 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
1816 local
->hw
.conf
.channel
->center_freq
,
1817 ifsta
->ssid
, ifsta
->ssid_len
);
1819 sta
->last_rssi
= bss
->rssi
;
1820 sta
->last_signal
= bss
->signal
;
1821 sta
->last_noise
= bss
->noise
;
1822 ieee80211_rx_bss_put(dev
, bss
);
1827 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
|
1828 WLAN_STA_AUTHORIZED
;
1832 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
1834 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1835 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1838 have_higher_than_11mbit
= true;
1840 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
1841 if (sband
->bitrates
[j
].bitrate
== rate
)
1843 if (elems
.supp_rates
[i
] & 0x80)
1844 basic_rates
|= BIT(j
);
1848 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1849 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1852 have_higher_than_11mbit
= true;
1854 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
1855 if (sband
->bitrates
[j
].bitrate
== rate
)
1857 if (elems
.ext_supp_rates
[i
] & 0x80)
1858 basic_rates
|= BIT(j
);
1862 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] = rates
;
1863 sdata
->basic_rates
= basic_rates
;
1865 /* cf. IEEE 802.11 9.2.12 */
1866 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
1867 have_higher_than_11mbit
)
1868 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
1870 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
1872 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&& elems
.wmm_param
&&
1873 local
->ops
->conf_ht
) {
1874 struct ieee80211_ht_bss_info bss_info
;
1876 ieee80211_ht_cap_ie_to_ht_info(
1877 (struct ieee80211_ht_cap
*)
1878 elems
.ht_cap_elem
, &sta
->ht_info
);
1879 ieee80211_ht_addt_info_ie_to_ht_bss_info(
1880 (struct ieee80211_ht_addt_info
*)
1881 elems
.ht_info_elem
, &bss_info
);
1882 ieee80211_hw_config_ht(local
, 1, &sta
->ht_info
, &bss_info
);
1885 rate_control_rate_init(sta
, local
);
1887 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1888 sta
->flags
|= WLAN_STA_WME
;
1889 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1890 elems
.wmm_param_len
);
1893 /* set AID, ieee80211_set_associated() will tell the driver */
1894 bss_conf
->aid
= aid
;
1895 ieee80211_set_associated(dev
, ifsta
, 1);
1899 ieee80211_associated(dev
, ifsta
);
1903 /* Caller must hold local->sta_bss_lock */
1904 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
1905 struct ieee80211_sta_bss
*bss
)
1907 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1908 bss
->hnext
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1909 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] = bss
;
1913 /* Caller must hold local->sta_bss_lock */
1914 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
1915 struct ieee80211_sta_bss
*bss
)
1917 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1918 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
1919 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1923 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
1926 prev
->hnext
= bss
->hnext
;
1935 static struct ieee80211_sta_bss
*
1936 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int freq
,
1937 u8
*ssid
, u8 ssid_len
)
1939 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1940 struct ieee80211_sta_bss
*bss
;
1942 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
1945 atomic_inc(&bss
->users
);
1946 atomic_inc(&bss
->users
);
1947 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
1949 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
1950 memcpy(bss
->ssid
, ssid
, ssid_len
);
1951 bss
->ssid_len
= ssid_len
;
1954 spin_lock_bh(&local
->sta_bss_lock
);
1955 /* TODO: order by RSSI? */
1956 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
1957 __ieee80211_rx_bss_hash_add(dev
, bss
);
1958 spin_unlock_bh(&local
->sta_bss_lock
);
1963 static struct ieee80211_sta_bss
*
1964 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
1965 u8
*ssid
, u8 ssid_len
)
1967 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1968 struct ieee80211_sta_bss
*bss
;
1970 spin_lock_bh(&local
->sta_bss_lock
);
1971 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
1973 if (!memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
1974 bss
->freq
== freq
&&
1975 bss
->ssid_len
== ssid_len
&&
1976 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
1977 atomic_inc(&bss
->users
);
1982 spin_unlock_bh(&local
->sta_bss_lock
);
1987 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
1997 static void ieee80211_rx_bss_put(struct net_device
*dev
,
1998 struct ieee80211_sta_bss
*bss
)
2000 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2001 if (!atomic_dec_and_test(&bss
->users
))
2004 spin_lock_bh(&local
->sta_bss_lock
);
2005 __ieee80211_rx_bss_hash_del(dev
, bss
);
2006 list_del(&bss
->list
);
2007 spin_unlock_bh(&local
->sta_bss_lock
);
2008 ieee80211_rx_bss_free(bss
);
2012 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
2014 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2015 spin_lock_init(&local
->sta_bss_lock
);
2016 INIT_LIST_HEAD(&local
->sta_bss_list
);
2020 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
2022 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2023 struct ieee80211_sta_bss
*bss
, *tmp
;
2025 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
2026 ieee80211_rx_bss_put(dev
, bss
);
2030 static void ieee80211_rx_bss_info(struct net_device
*dev
,
2031 struct ieee80211_mgmt
*mgmt
,
2033 struct ieee80211_rx_status
*rx_status
,
2036 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2037 struct ieee802_11_elems elems
;
2040 struct ieee80211_sta_bss
*bss
;
2041 struct sta_info
*sta
;
2042 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2044 DECLARE_MAC_BUF(mac
);
2045 DECLARE_MAC_BUF(mac2
);
2047 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
2048 return; /* ignore ProbeResp to foreign address */
2051 printk(KERN_DEBUG
"%s: RX %s from %s to %s\n",
2052 dev
->name
, beacon
? "Beacon" : "Probe Response",
2053 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
));
2056 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2060 timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
2062 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
2063 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0) {
2064 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2065 static unsigned long last_tsf_debug
= 0;
2067 if (local
->ops
->get_tsf
)
2068 tsf
= local
->ops
->get_tsf(local_to_hw(local
));
2071 if (time_after(jiffies
, last_tsf_debug
+ 5 * HZ
)) {
2072 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
2073 "%s TSF=0x%llx BCN=0x%llx diff=%lld "
2075 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->bssid
),
2076 (unsigned long long)tsf
,
2077 (unsigned long long)timestamp
,
2078 (unsigned long long)(tsf
- timestamp
),
2080 last_tsf_debug
= jiffies
;
2082 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2085 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2087 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
2088 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
2089 (sta
= sta_info_get(local
, mgmt
->sa
))) {
2090 struct ieee80211_supported_band
*sband
;
2091 struct ieee80211_rate
*bitrates
;
2093 u64 supp_rates
, prev_rates
;
2096 sband
= local
->hw
.wiphy
->bands
[rx_status
->band
];
2100 sband
= local
->hw
.wiphy
->bands
[
2101 local
->hw
.conf
.channel
->band
];
2104 bitrates
= sband
->bitrates
;
2105 num_rates
= sband
->n_bitrates
;
2108 for (i
= 0; i
< elems
.supp_rates_len
+
2109 elems
.ext_supp_rates_len
; i
++) {
2112 if (i
< elems
.supp_rates_len
)
2113 rate
= elems
.supp_rates
[i
];
2114 else if (elems
.ext_supp_rates
)
2115 rate
= elems
.ext_supp_rates
2116 [i
- elems
.supp_rates_len
];
2117 own_rate
= 5 * (rate
& 0x7f);
2118 for (j
= 0; j
< num_rates
; j
++)
2119 if (bitrates
[j
].bitrate
== own_rate
)
2120 supp_rates
|= BIT(j
);
2123 prev_rates
= sta
->supp_rates
[rx_status
->band
];
2124 sta
->supp_rates
[rx_status
->band
] &= supp_rates
;
2125 if (sta
->supp_rates
[rx_status
->band
] == 0) {
2126 /* No matching rates - this should not really happen.
2127 * Make sure that at least one rate is marked
2128 * supported to avoid issues with TX rate ctrl. */
2129 sta
->supp_rates
[rx_status
->band
] =
2130 sdata
->u
.sta
.supp_rates_bits
[rx_status
->band
];
2132 if (sta
->supp_rates
[rx_status
->band
] != prev_rates
) {
2133 printk(KERN_DEBUG
"%s: updated supp_rates set for "
2134 "%s based on beacon info (0x%llx & 0x%llx -> "
2136 dev
->name
, print_mac(mac
, sta
->addr
),
2137 (unsigned long long) prev_rates
,
2138 (unsigned long long) supp_rates
,
2139 (unsigned long long) sta
->supp_rates
[rx_status
->band
]);
2147 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
2148 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0]);
2150 freq
= rx_status
->freq
;
2152 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, freq
,
2153 elems
.ssid
, elems
.ssid_len
);
2155 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, freq
,
2156 elems
.ssid
, elems
.ssid_len
);
2161 /* TODO: order by RSSI? */
2162 spin_lock_bh(&local
->sta_bss_lock
);
2163 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
2164 spin_unlock_bh(&local
->sta_bss_lock
);
2168 bss
->band
= rx_status
->band
;
2170 if (bss
->probe_resp
&& beacon
) {
2171 /* Do not allow beacon to override data from Probe Response. */
2172 ieee80211_rx_bss_put(dev
, bss
);
2176 /* save the ERP value so that it is available at association time */
2177 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
2178 bss
->erp_value
= elems
.erp_info
[0];
2179 bss
->has_erp_value
= 1;
2182 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
2183 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2185 bss
->supp_rates_len
= 0;
2186 if (elems
.supp_rates
) {
2187 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2188 if (clen
> elems
.supp_rates_len
)
2189 clen
= elems
.supp_rates_len
;
2190 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
2192 bss
->supp_rates_len
+= clen
;
2194 if (elems
.ext_supp_rates
) {
2195 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2196 if (clen
> elems
.ext_supp_rates_len
)
2197 clen
= elems
.ext_supp_rates_len
;
2198 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
2199 elems
.ext_supp_rates
, clen
);
2200 bss
->supp_rates_len
+= clen
;
2204 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
2205 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
2207 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
2209 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
2210 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
2212 bss
->wpa_ie_len
= 0;
2213 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
2216 bss
->wpa_ie_len
= 0;
2220 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
2221 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
2223 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
2225 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
2226 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
2228 bss
->rsn_ie_len
= 0;
2229 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
2232 bss
->rsn_ie_len
= 0;
2235 if (elems
.wmm_param
&&
2236 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
2237 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
2239 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
2241 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
2242 elems
.wmm_param_len
+ 2);
2243 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
2245 bss
->wmm_ie_len
= 0;
2246 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
2249 bss
->wmm_ie_len
= 0;
2251 if (elems
.ht_cap_elem
&&
2252 (!bss
->ht_ie
|| bss
->ht_ie_len
!= elems
.ht_cap_elem_len
||
2253 memcmp(bss
->ht_ie
, elems
.ht_cap_elem
, elems
.ht_cap_elem_len
))) {
2255 bss
->ht_ie
= kmalloc(elems
.ht_cap_elem_len
+ 2, GFP_ATOMIC
);
2257 memcpy(bss
->ht_ie
, elems
.ht_cap_elem
- 2,
2258 elems
.ht_cap_elem_len
+ 2);
2259 bss
->ht_ie_len
= elems
.ht_cap_elem_len
+ 2;
2262 } else if (!elems
.ht_cap_elem
&& bss
->ht_ie
) {
2268 bss
->timestamp
= timestamp
;
2269 bss
->last_update
= jiffies
;
2270 bss
->rssi
= rx_status
->ssi
;
2271 bss
->signal
= rx_status
->signal
;
2272 bss
->noise
= rx_status
->noise
;
2275 ieee80211_rx_bss_put(dev
, bss
);
2279 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
2280 struct ieee80211_mgmt
*mgmt
,
2282 struct ieee80211_rx_status
*rx_status
)
2284 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
2288 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
2289 struct ieee80211_mgmt
*mgmt
,
2291 struct ieee80211_rx_status
*rx_status
)
2293 struct ieee80211_sub_if_data
*sdata
;
2294 struct ieee80211_if_sta
*ifsta
;
2296 struct ieee802_11_elems elems
;
2297 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2298 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
2301 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
2303 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2304 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2306 ifsta
= &sdata
->u
.sta
;
2308 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
2309 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
2312 /* Process beacon from the current BSS */
2313 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2317 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2319 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
2320 changed
|= ieee80211_handle_erp_ie(sdata
, elems
.erp_info
[0]);
2322 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&&
2323 elems
.wmm_param
&& local
->ops
->conf_ht
&&
2324 conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
2325 struct ieee80211_ht_bss_info bss_info
;
2327 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2328 (struct ieee80211_ht_addt_info
*)
2329 elems
.ht_info_elem
, &bss_info
);
2330 /* check if AP changed bss inforamation */
2331 if ((conf
->ht_bss_conf
.primary_channel
!=
2332 bss_info
.primary_channel
) ||
2333 (conf
->ht_bss_conf
.bss_cap
!= bss_info
.bss_cap
) ||
2334 (conf
->ht_bss_conf
.bss_op_mode
!= bss_info
.bss_op_mode
))
2335 ieee80211_hw_config_ht(local
, 1, &conf
->ht_conf
,
2339 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2340 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2341 elems
.wmm_param_len
);
2344 ieee80211_bss_info_change_notify(sdata
, changed
);
2348 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
2349 struct ieee80211_if_sta
*ifsta
,
2350 struct ieee80211_mgmt
*mgmt
,
2352 struct ieee80211_rx_status
*rx_status
)
2354 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2355 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2357 struct sk_buff
*skb
;
2358 struct ieee80211_mgmt
*resp
;
2360 DECLARE_MAC_BUF(mac
);
2361 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2362 DECLARE_MAC_BUF(mac2
);
2363 DECLARE_MAC_BUF(mac3
);
2366 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
||
2367 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
2368 len
< 24 + 2 || !ifsta
->probe_resp
)
2371 if (local
->ops
->tx_last_beacon
)
2372 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
2376 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2377 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
2378 "%s (tx_last_beacon=%d)\n",
2379 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
2380 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
2381 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2383 if (!tx_last_beacon
)
2386 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
2387 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
2390 end
= ((u8
*) mgmt
) + len
;
2391 pos
= mgmt
->u
.probe_req
.variable
;
2392 if (pos
[0] != WLAN_EID_SSID
||
2393 pos
+ 2 + pos
[1] > end
) {
2394 if (net_ratelimit()) {
2395 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
2397 dev
->name
, print_mac(mac
, mgmt
->sa
));
2402 (pos
[1] != ifsta
->ssid_len
||
2403 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
2404 /* Ignore ProbeReq for foreign SSID */
2408 /* Reply with ProbeResp */
2409 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
2413 resp
= (struct ieee80211_mgmt
*) skb
->data
;
2414 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
2415 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2416 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
2417 dev
->name
, print_mac(mac
, resp
->da
));
2418 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2419 ieee80211_sta_tx(dev
, skb
, 0);
2422 static void ieee80211_rx_mgmt_action(struct net_device
*dev
,
2423 struct ieee80211_if_sta
*ifsta
,
2424 struct ieee80211_mgmt
*mgmt
,
2427 if (len
< IEEE80211_MIN_ACTION_SIZE
)
2430 switch (mgmt
->u
.action
.category
) {
2431 case WLAN_CATEGORY_BACK
:
2432 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
2433 case WLAN_ACTION_ADDBA_REQ
:
2434 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2435 sizeof(mgmt
->u
.action
.u
.addba_req
)))
2437 ieee80211_sta_process_addba_request(dev
, mgmt
, len
);
2439 case WLAN_ACTION_ADDBA_RESP
:
2440 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2441 sizeof(mgmt
->u
.action
.u
.addba_resp
)))
2443 ieee80211_sta_process_addba_resp(dev
, mgmt
, len
);
2445 case WLAN_ACTION_DELBA
:
2446 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2447 sizeof(mgmt
->u
.action
.u
.delba
)))
2449 ieee80211_sta_process_delba(dev
, mgmt
, len
);
2452 if (net_ratelimit())
2453 printk(KERN_DEBUG
"%s: Rx unknown A-MPDU action\n",
2463 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
2464 struct ieee80211_rx_status
*rx_status
)
2466 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2467 struct ieee80211_sub_if_data
*sdata
;
2468 struct ieee80211_if_sta
*ifsta
;
2469 struct ieee80211_mgmt
*mgmt
;
2475 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2476 ifsta
= &sdata
->u
.sta
;
2478 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2479 fc
= le16_to_cpu(mgmt
->frame_control
);
2481 switch (fc
& IEEE80211_FCTL_STYPE
) {
2482 case IEEE80211_STYPE_PROBE_REQ
:
2483 case IEEE80211_STYPE_PROBE_RESP
:
2484 case IEEE80211_STYPE_BEACON
:
2485 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
2486 case IEEE80211_STYPE_AUTH
:
2487 case IEEE80211_STYPE_ASSOC_RESP
:
2488 case IEEE80211_STYPE_REASSOC_RESP
:
2489 case IEEE80211_STYPE_DEAUTH
:
2490 case IEEE80211_STYPE_DISASSOC
:
2491 case IEEE80211_STYPE_ACTION
:
2492 skb_queue_tail(&ifsta
->skb_queue
, skb
);
2493 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2496 printk(KERN_DEBUG
"%s: received unknown management frame - "
2497 "stype=%d\n", dev
->name
,
2498 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
2507 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
2508 struct sk_buff
*skb
)
2510 struct ieee80211_rx_status
*rx_status
;
2511 struct ieee80211_sub_if_data
*sdata
;
2512 struct ieee80211_if_sta
*ifsta
;
2513 struct ieee80211_mgmt
*mgmt
;
2516 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2517 ifsta
= &sdata
->u
.sta
;
2519 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
2520 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2521 fc
= le16_to_cpu(mgmt
->frame_control
);
2523 switch (fc
& IEEE80211_FCTL_STYPE
) {
2524 case IEEE80211_STYPE_PROBE_REQ
:
2525 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
2528 case IEEE80211_STYPE_PROBE_RESP
:
2529 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
2531 case IEEE80211_STYPE_BEACON
:
2532 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
2534 case IEEE80211_STYPE_AUTH
:
2535 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
2537 case IEEE80211_STYPE_ASSOC_RESP
:
2538 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 0);
2540 case IEEE80211_STYPE_REASSOC_RESP
:
2541 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 1);
2543 case IEEE80211_STYPE_DEAUTH
:
2544 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
2546 case IEEE80211_STYPE_DISASSOC
:
2547 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
2549 case IEEE80211_STYPE_ACTION
:
2550 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
);
2559 ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
2560 struct ieee80211_rx_status
*rx_status
)
2562 struct ieee80211_mgmt
*mgmt
;
2566 return RX_DROP_UNUSABLE
;
2568 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2569 fc
= le16_to_cpu(mgmt
->frame_control
);
2571 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_CTL
)
2575 return RX_DROP_MONITOR
;
2577 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2578 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
2579 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
2580 skb
->len
, rx_status
);
2583 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
2584 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
2594 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
2596 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2598 struct sta_info
*sta
;
2600 read_lock_bh(&local
->sta_lock
);
2601 list_for_each_entry(sta
, &local
->sta_list
, list
) {
2602 if (sta
->dev
== dev
&&
2603 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
2609 read_unlock_bh(&local
->sta_lock
);
2615 static void ieee80211_sta_expire(struct net_device
*dev
)
2617 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2618 struct sta_info
*sta
, *tmp
;
2619 LIST_HEAD(tmp_list
);
2620 DECLARE_MAC_BUF(mac
);
2622 write_lock_bh(&local
->sta_lock
);
2623 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
2624 if (time_after(jiffies
, sta
->last_rx
+
2625 IEEE80211_IBSS_INACTIVITY_LIMIT
)) {
2626 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
2627 dev
->name
, print_mac(mac
, sta
->addr
));
2628 __sta_info_get(sta
);
2629 sta_info_remove(sta
);
2630 list_add(&sta
->list
, &tmp_list
);
2632 write_unlock_bh(&local
->sta_lock
);
2634 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
) {
2641 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
2642 struct ieee80211_if_sta
*ifsta
)
2644 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2646 ieee80211_sta_expire(dev
);
2647 if (ieee80211_sta_active_ibss(dev
))
2650 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
2651 "IBSS networks with same SSID (merge)\n", dev
->name
);
2652 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
2656 void ieee80211_sta_timer(unsigned long data
)
2658 struct ieee80211_sub_if_data
*sdata
=
2659 (struct ieee80211_sub_if_data
*) data
;
2660 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2661 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
2663 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2664 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2668 void ieee80211_sta_work(struct work_struct
*work
)
2670 struct ieee80211_sub_if_data
*sdata
=
2671 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
2672 struct net_device
*dev
= sdata
->dev
;
2673 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2674 struct ieee80211_if_sta
*ifsta
;
2675 struct sk_buff
*skb
;
2677 if (!netif_running(dev
))
2680 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
2683 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
2684 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
) {
2685 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
2686 "(type=%d)\n", dev
->name
, sdata
->vif
.type
);
2689 ifsta
= &sdata
->u
.sta
;
2691 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
2692 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
2694 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
2695 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
2696 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
2697 if (ifsta
->scan_ssid_len
)
2698 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
2700 ieee80211_sta_start_scan(dev
, NULL
, 0);
2704 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
2705 if (ieee80211_sta_config_auth(dev
, ifsta
))
2707 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2708 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
2711 switch (ifsta
->state
) {
2712 case IEEE80211_DISABLED
:
2714 case IEEE80211_AUTHENTICATE
:
2715 ieee80211_authenticate(dev
, ifsta
);
2717 case IEEE80211_ASSOCIATE
:
2718 ieee80211_associate(dev
, ifsta
);
2720 case IEEE80211_ASSOCIATED
:
2721 ieee80211_associated(dev
, ifsta
);
2723 case IEEE80211_IBSS_SEARCH
:
2724 ieee80211_sta_find_ibss(dev
, ifsta
);
2726 case IEEE80211_IBSS_JOINED
:
2727 ieee80211_sta_merge_ibss(dev
, ifsta
);
2730 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
2735 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
2736 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
2737 "mixed-cell disabled - disassociate\n", dev
->name
);
2739 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
2740 ieee80211_set_disassoc(dev
, ifsta
, 0);
2745 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
2746 struct ieee80211_if_sta
*ifsta
)
2748 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2750 if (local
->ops
->reset_tsf
) {
2751 /* Reset own TSF to allow time synchronization work. */
2752 local
->ops
->reset_tsf(local_to_hw(local
));
2755 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
2758 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
2759 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2760 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
2761 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
2762 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
2763 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
2765 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2766 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
2768 ifsta
->auth_transaction
= -1;
2769 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
2770 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
2771 netif_carrier_off(dev
);
2775 void ieee80211_sta_req_auth(struct net_device
*dev
,
2776 struct ieee80211_if_sta
*ifsta
)
2778 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2779 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2781 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2784 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
2785 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
2786 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
2787 IEEE80211_STA_AUTO_SSID_SEL
))) {
2788 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2789 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2793 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
2794 const char *ssid
, int ssid_len
)
2796 int tmp
, hidden_ssid
;
2798 if (ssid_len
== ifsta
->ssid_len
&&
2799 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
2802 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
2808 if (ssid
[tmp
] != '\0') {
2814 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
2817 if (ssid_len
== 1 && ssid
[0] == ' ')
2823 static int ieee80211_sta_config_auth(struct net_device
*dev
,
2824 struct ieee80211_if_sta
*ifsta
)
2826 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2827 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2828 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
2829 int top_rssi
= 0, freq
;
2831 if (!(ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
2832 IEEE80211_STA_AUTO_BSSID_SEL
| IEEE80211_STA_AUTO_CHANNEL_SEL
))) {
2833 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2834 ieee80211_sta_reset_auth(dev
, ifsta
);
2838 spin_lock_bh(&local
->sta_bss_lock
);
2839 freq
= local
->oper_channel
->center_freq
;
2840 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2841 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
2844 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
2845 !!sdata
->default_key
)
2848 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
2852 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
2853 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
2856 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
2857 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
2860 if (!selected
|| top_rssi
< bss
->rssi
) {
2862 top_rssi
= bss
->rssi
;
2866 atomic_inc(&selected
->users
);
2867 spin_unlock_bh(&local
->sta_bss_lock
);
2870 ieee80211_set_freq(local
, selected
->freq
);
2871 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
2872 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
2873 selected
->ssid_len
);
2874 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
2875 ieee80211_rx_bss_put(dev
, selected
);
2876 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2877 ieee80211_sta_reset_auth(dev
, ifsta
);
2880 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
2881 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
2882 ieee80211_sta_start_scan(dev
, NULL
, 0);
2884 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
2886 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2887 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2889 ifsta
->state
= IEEE80211_DISABLED
;
2894 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2895 struct ieee80211_if_sta
*ifsta
,
2896 struct ieee80211_sta_bss
*bss
)
2898 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2899 int res
, rates
, i
, j
;
2900 struct sk_buff
*skb
;
2901 struct ieee80211_mgmt
*mgmt
;
2902 struct ieee80211_tx_control control
;
2903 struct rate_selection ratesel
;
2905 struct ieee80211_sub_if_data
*sdata
;
2906 struct ieee80211_supported_band
*sband
;
2908 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2910 /* Remove possible STA entries from other IBSS networks. */
2911 sta_info_flush(local
, NULL
);
2913 if (local
->ops
->reset_tsf
) {
2914 /* Reset own TSF to allow time synchronization work. */
2915 local
->ops
->reset_tsf(local_to_hw(local
));
2917 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2918 res
= ieee80211_if_config(dev
);
2922 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2924 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2925 sdata
->drop_unencrypted
= bss
->capability
&
2926 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2928 res
= ieee80211_set_freq(local
, bss
->freq
);
2930 if (local
->oper_channel
->flags
& IEEE80211_CHAN_NO_IBSS
) {
2931 printk(KERN_DEBUG
"%s: IBSS not allowed on frequency "
2932 "%d MHz\n", dev
->name
, local
->oper_channel
->center_freq
);
2936 /* Set beacon template based on scan results */
2937 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2942 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2944 mgmt
= (struct ieee80211_mgmt
*)
2945 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2946 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2947 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2948 IEEE80211_STYPE_BEACON
);
2949 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2950 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2951 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2952 mgmt
->u
.beacon
.beacon_int
=
2953 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2954 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2956 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2957 *pos
++ = WLAN_EID_SSID
;
2958 *pos
++ = ifsta
->ssid_len
;
2959 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2961 rates
= bss
->supp_rates_len
;
2964 pos
= skb_put(skb
, 2 + rates
);
2965 *pos
++ = WLAN_EID_SUPP_RATES
;
2967 memcpy(pos
, bss
->supp_rates
, rates
);
2969 if (bss
->band
== IEEE80211_BAND_2GHZ
) {
2970 pos
= skb_put(skb
, 2 + 1);
2971 *pos
++ = WLAN_EID_DS_PARAMS
;
2973 *pos
++ = ieee80211_frequency_to_channel(bss
->freq
);
2976 pos
= skb_put(skb
, 2 + 2);
2977 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2979 /* FIX: set ATIM window based on scan results */
2983 if (bss
->supp_rates_len
> 8) {
2984 rates
= bss
->supp_rates_len
- 8;
2985 pos
= skb_put(skb
, 2 + rates
);
2986 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2988 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2991 memset(&control
, 0, sizeof(control
));
2992 rate_control_get_rate(dev
, sband
, skb
, &ratesel
);
2993 if (!ratesel
.rate
) {
2994 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2995 "for IBSS beacon\n", dev
->name
);
2998 control
.vif
= &sdata
->vif
;
2999 control
.tx_rate
= ratesel
.rate
;
3000 if (sdata
->bss_conf
.use_short_preamble
&&
3001 ratesel
.rate
->flags
& IEEE80211_RATE_SHORT_PREAMBLE
)
3002 control
.flags
|= IEEE80211_TXCTL_SHORT_PREAMBLE
;
3003 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
3004 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
3005 control
.retry_limit
= 1;
3007 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
3008 if (ifsta
->probe_resp
) {
3009 mgmt
= (struct ieee80211_mgmt
*)
3010 ifsta
->probe_resp
->data
;
3011 mgmt
->frame_control
=
3012 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
3013 IEEE80211_STYPE_PROBE_RESP
);
3015 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
3016 "template for IBSS\n", dev
->name
);
3019 if (local
->ops
->beacon_update
&&
3020 local
->ops
->beacon_update(local_to_hw(local
),
3021 skb
, &control
) == 0) {
3022 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
3023 "template based on scan results\n", dev
->name
);
3028 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
3029 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
3030 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
3031 for (j
= 0; j
< sband
->n_bitrates
; j
++)
3032 if (sband
->bitrates
[j
].bitrate
== bitrate
)
3035 ifsta
->supp_rates_bits
[local
->hw
.conf
.channel
->band
] = rates
;
3039 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
3040 "template\n", dev
->name
);
3044 ifsta
->state
= IEEE80211_IBSS_JOINED
;
3045 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
3047 ieee80211_rx_bss_put(dev
, bss
);
3053 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
3054 struct ieee80211_if_sta
*ifsta
)
3056 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3057 struct ieee80211_sta_bss
*bss
;
3058 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3059 struct ieee80211_supported_band
*sband
;
3060 u8 bssid
[ETH_ALEN
], *pos
;
3062 DECLARE_MAC_BUF(mac
);
3065 /* Easier testing, use fixed BSSID. */
3066 memset(bssid
, 0xfe, ETH_ALEN
);
3068 /* Generate random, not broadcast, locally administered BSSID. Mix in
3069 * own MAC address to make sure that devices that do not have proper
3070 * random number generator get different BSSID. */
3071 get_random_bytes(bssid
, ETH_ALEN
);
3072 for (i
= 0; i
< ETH_ALEN
; i
++)
3073 bssid
[i
] ^= dev
->dev_addr
[i
];
3078 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
3079 dev
->name
, print_mac(mac
, bssid
));
3081 bss
= ieee80211_rx_bss_add(dev
, bssid
,
3082 local
->hw
.conf
.channel
->center_freq
,
3083 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
3087 bss
->band
= local
->hw
.conf
.channel
->band
;
3088 sband
= local
->hw
.wiphy
->bands
[bss
->band
];
3090 if (local
->hw
.conf
.beacon_int
== 0)
3091 local
->hw
.conf
.beacon_int
= 100;
3092 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
3093 bss
->last_update
= jiffies
;
3094 bss
->capability
= WLAN_CAPABILITY_IBSS
;
3095 if (sdata
->default_key
) {
3096 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
3098 sdata
->drop_unencrypted
= 0;
3099 bss
->supp_rates_len
= sband
->n_bitrates
;
3100 pos
= bss
->supp_rates
;
3101 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
3102 int rate
= sband
->bitrates
[i
].bitrate
;
3103 *pos
++ = (u8
) (rate
/ 5);
3106 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3110 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
3111 struct ieee80211_if_sta
*ifsta
)
3113 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3114 struct ieee80211_sta_bss
*bss
;
3118 DECLARE_MAC_BUF(mac
);
3119 DECLARE_MAC_BUF(mac2
);
3121 if (ifsta
->ssid_len
== 0)
3124 active_ibss
= ieee80211_sta_active_ibss(dev
);
3125 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3126 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
3127 dev
->name
, active_ibss
);
3128 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3129 spin_lock_bh(&local
->sta_bss_lock
);
3130 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3131 if (ifsta
->ssid_len
!= bss
->ssid_len
||
3132 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
3133 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
3135 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3136 printk(KERN_DEBUG
" bssid=%s found\n",
3137 print_mac(mac
, bss
->bssid
));
3138 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3139 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
3141 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
3144 spin_unlock_bh(&local
->sta_bss_lock
);
3146 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3147 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
3148 "%s\n", print_mac(mac
, bssid
), print_mac(mac2
, ifsta
->bssid
));
3149 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3150 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
3151 (bss
= ieee80211_rx_bss_get(dev
, bssid
,
3152 local
->hw
.conf
.channel
->center_freq
,
3153 ifsta
->ssid
, ifsta
->ssid_len
))) {
3154 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
3155 " based on configured SSID\n",
3156 dev
->name
, print_mac(mac
, bssid
));
3157 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3159 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3160 printk(KERN_DEBUG
" did not try to join ibss\n");
3161 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3163 /* Selected IBSS not found in current scan results - try to scan */
3164 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3165 !ieee80211_sta_active_ibss(dev
)) {
3166 mod_timer(&ifsta
->timer
, jiffies
+
3167 IEEE80211_IBSS_MERGE_INTERVAL
);
3168 } else if (time_after(jiffies
, local
->last_scan_completed
+
3169 IEEE80211_SCAN_INTERVAL
)) {
3170 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
3171 "join\n", dev
->name
);
3172 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
3174 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
3175 int interval
= IEEE80211_SCAN_INTERVAL
;
3177 if (time_after(jiffies
, ifsta
->ibss_join_req
+
3178 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
3179 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
3180 (!(local
->oper_channel
->flags
&
3181 IEEE80211_CHAN_NO_IBSS
)))
3182 return ieee80211_sta_create_ibss(dev
, ifsta
);
3183 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
3184 printk(KERN_DEBUG
"%s: IBSS not allowed on"
3185 " %d MHz\n", dev
->name
,
3186 local
->hw
.conf
.channel
->center_freq
);
3189 /* No IBSS found - decrease scan interval and continue
3191 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
3194 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3195 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
3203 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
3205 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3206 struct ieee80211_if_sta
*ifsta
;
3207 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3209 if (len
> IEEE80211_MAX_SSID_LEN
)
3212 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
3214 if (local
->ops
->conf_tx
) {
3215 struct ieee80211_tx_queue_params qparam
;
3218 memset(&qparam
, 0, sizeof(qparam
));
3222 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
3223 !(sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
))
3228 qparam
.cw_max
= 1023;
3231 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
3232 local
->ops
->conf_tx(local_to_hw(local
),
3233 i
+ IEEE80211_TX_QUEUE_DATA0
,
3236 /* IBSS uses different parameters for Beacon sending */
3240 local
->ops
->conf_tx(local_to_hw(local
),
3241 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
3244 ifsta
= &sdata
->u
.sta
;
3246 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
3247 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
3248 memcpy(ifsta
->ssid
, ssid
, len
);
3249 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
3250 ifsta
->ssid_len
= len
;
3253 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
3255 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
3256 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3257 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
3258 ifsta
->ibss_join_req
= jiffies
;
3259 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3260 return ieee80211_sta_find_ibss(dev
, ifsta
);
3266 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
3268 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3269 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3270 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
3271 *len
= ifsta
->ssid_len
;
3276 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
3278 struct ieee80211_sub_if_data
*sdata
;
3279 struct ieee80211_if_sta
*ifsta
;
3282 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3283 ifsta
= &sdata
->u
.sta
;
3285 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3286 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
3287 res
= ieee80211_if_config(dev
);
3289 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
3290 "the low-level driver\n", dev
->name
);
3295 if (is_valid_ether_addr(bssid
))
3296 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
3298 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
3304 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
3305 struct ieee80211_sub_if_data
*sdata
,
3308 struct sk_buff
*skb
;
3309 struct ieee80211_hdr
*nullfunc
;
3312 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
3314 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
3315 "frame\n", sdata
->dev
->name
);
3318 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3320 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
3321 memset(nullfunc
, 0, 24);
3322 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
3323 IEEE80211_FCTL_TODS
;
3325 fc
|= IEEE80211_FCTL_PM
;
3326 nullfunc
->frame_control
= cpu_to_le16(fc
);
3327 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3328 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
3329 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3331 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
3335 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
3337 struct ieee80211_local
*local
= hw_to_local(hw
);
3338 struct net_device
*dev
= local
->scan_dev
;
3339 struct ieee80211_sub_if_data
*sdata
;
3340 union iwreq_data wrqu
;
3342 local
->last_scan_completed
= jiffies
;
3343 memset(&wrqu
, 0, sizeof(wrqu
));
3344 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
3346 if (local
->sta_hw_scanning
) {
3347 local
->sta_hw_scanning
= 0;
3351 local
->sta_sw_scanning
= 0;
3352 if (ieee80211_hw_config(local
))
3353 printk(KERN_DEBUG
"%s: failed to restore operational "
3354 "channel after scan\n", dev
->name
);
3357 netif_tx_lock_bh(local
->mdev
);
3358 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
3359 local
->ops
->configure_filter(local_to_hw(local
),
3360 FIF_BCN_PRBRESP_PROMISC
,
3361 &local
->filter_flags
,
3362 local
->mdev
->mc_count
,
3363 local
->mdev
->mc_list
);
3365 netif_tx_unlock_bh(local
->mdev
);
3368 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3370 /* No need to wake the master device. */
3371 if (sdata
->dev
== local
->mdev
)
3374 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
) {
3375 if (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
3376 ieee80211_send_nullfunc(local
, sdata
, 0);
3377 ieee80211_sta_timer((unsigned long)sdata
);
3380 netif_wake_queue(sdata
->dev
);
3385 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3386 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
3387 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3388 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
3389 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3390 !ieee80211_sta_active_ibss(dev
)))
3391 ieee80211_sta_find_ibss(dev
, ifsta
);
3394 EXPORT_SYMBOL(ieee80211_scan_completed
);
3396 void ieee80211_sta_scan_work(struct work_struct
*work
)
3398 struct ieee80211_local
*local
=
3399 container_of(work
, struct ieee80211_local
, scan_work
.work
);
3400 struct net_device
*dev
= local
->scan_dev
;
3401 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3402 struct ieee80211_supported_band
*sband
;
3403 struct ieee80211_channel
*chan
;
3405 unsigned long next_delay
= 0;
3407 if (!local
->sta_sw_scanning
)
3410 switch (local
->scan_state
) {
3411 case SCAN_SET_CHANNEL
:
3413 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
3414 * after we successfully scanned the last channel of the last
3415 * band (and the last band is supported by the hw)
3417 if (local
->scan_band
< IEEE80211_NUM_BANDS
)
3418 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3423 * If we are at an unsupported band and have more bands
3424 * left to scan, advance to the next supported one.
3426 while (!sband
&& local
->scan_band
< IEEE80211_NUM_BANDS
- 1) {
3428 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3429 local
->scan_channel_idx
= 0;
3432 /* if no more bands/channels left, complete scan */
3433 if (!sband
|| local
->scan_channel_idx
>= sband
->n_channels
) {
3434 ieee80211_scan_completed(local_to_hw(local
));
3438 chan
= &sband
->channels
[local
->scan_channel_idx
];
3440 if (chan
->flags
& IEEE80211_CHAN_DISABLED
||
3441 (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3442 chan
->flags
& IEEE80211_CHAN_NO_IBSS
))
3446 local
->scan_channel
= chan
;
3447 if (ieee80211_hw_config(local
)) {
3448 printk(KERN_DEBUG
"%s: failed to set freq to "
3449 "%d MHz for scan\n", dev
->name
,
3455 /* advance state machine to next channel/band */
3456 local
->scan_channel_idx
++;
3457 if (local
->scan_channel_idx
>= sband
->n_channels
) {
3459 * scan_band may end up == IEEE80211_NUM_BANDS, but
3460 * we'll catch that case above and complete the scan
3461 * if that is the case.
3464 local
->scan_channel_idx
= 0;
3470 next_delay
= IEEE80211_PROBE_DELAY
+
3471 usecs_to_jiffies(local
->hw
.channel_change_time
);
3472 local
->scan_state
= SCAN_SEND_PROBE
;
3474 case SCAN_SEND_PROBE
:
3475 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
3476 local
->scan_state
= SCAN_SET_CHANNEL
;
3478 if (local
->scan_channel
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)
3480 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
3481 local
->scan_ssid_len
);
3482 next_delay
= IEEE80211_CHANNEL_TIME
;
3486 if (local
->sta_sw_scanning
)
3487 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3492 static int ieee80211_sta_start_scan(struct net_device
*dev
,
3493 u8
*ssid
, size_t ssid_len
)
3495 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3496 struct ieee80211_sub_if_data
*sdata
;
3498 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
3501 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
3502 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
3505 * ScanType: ACTIVE, PASSIVE
3506 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
3507 * a Probe frame during active scanning
3509 * MinChannelTime (>= ProbeDelay), in TU
3510 * MaxChannelTime: (>= MinChannelTime), in TU
3513 /* MLME-SCAN.confirm
3515 * ResultCode: SUCCESS, INVALID_PARAMETERS
3518 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3519 if (local
->scan_dev
== dev
)
3524 if (local
->ops
->hw_scan
) {
3525 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
3528 local
->sta_hw_scanning
= 1;
3529 local
->scan_dev
= dev
;
3534 local
->sta_sw_scanning
= 1;
3537 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3539 /* Don't stop the master interface, otherwise we can't transmit
3541 if (sdata
->dev
== local
->mdev
)
3544 netif_stop_queue(sdata
->dev
);
3545 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3546 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
3547 ieee80211_send_nullfunc(local
, sdata
, 1);
3552 local
->scan_ssid_len
= ssid_len
;
3553 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
3555 local
->scan_ssid_len
= 0;
3556 local
->scan_state
= SCAN_SET_CHANNEL
;
3557 local
->scan_channel_idx
= 0;
3558 local
->scan_band
= IEEE80211_BAND_2GHZ
;
3559 local
->scan_dev
= dev
;
3561 netif_tx_lock_bh(local
->mdev
);
3562 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
3563 local
->ops
->configure_filter(local_to_hw(local
),
3564 FIF_BCN_PRBRESP_PROMISC
,
3565 &local
->filter_flags
,
3566 local
->mdev
->mc_count
,
3567 local
->mdev
->mc_list
);
3568 netif_tx_unlock_bh(local
->mdev
);
3570 /* TODO: start scan as soon as all nullfunc frames are ACKed */
3571 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3572 IEEE80211_CHANNEL_TIME
);
3578 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
3580 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3581 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3582 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3584 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3585 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
3587 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3588 if (local
->scan_dev
== dev
)
3593 ifsta
->scan_ssid_len
= ssid_len
;
3595 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
3596 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
3597 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3602 ieee80211_sta_scan_result(struct net_device
*dev
,
3603 struct ieee80211_sta_bss
*bss
,
3604 char *current_ev
, char *end_buf
)
3606 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3607 struct iw_event iwe
;
3609 if (time_after(jiffies
,
3610 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
3613 memset(&iwe
, 0, sizeof(iwe
));
3614 iwe
.cmd
= SIOCGIWAP
;
3615 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
3616 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
3617 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3620 memset(&iwe
, 0, sizeof(iwe
));
3621 iwe
.cmd
= SIOCGIWESSID
;
3622 iwe
.u
.data
.length
= bss
->ssid_len
;
3623 iwe
.u
.data
.flags
= 1;
3624 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3627 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)) {
3628 memset(&iwe
, 0, sizeof(iwe
));
3629 iwe
.cmd
= SIOCGIWMODE
;
3630 if (bss
->capability
& WLAN_CAPABILITY_ESS
)
3631 iwe
.u
.mode
= IW_MODE_MASTER
;
3633 iwe
.u
.mode
= IW_MODE_ADHOC
;
3634 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3638 memset(&iwe
, 0, sizeof(iwe
));
3639 iwe
.cmd
= SIOCGIWFREQ
;
3640 iwe
.u
.freq
.m
= bss
->freq
;
3642 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3645 memset(&iwe
, 0, sizeof(iwe
));
3646 iwe
.cmd
= SIOCGIWFREQ
;
3647 iwe
.u
.freq
.m
= ieee80211_frequency_to_channel(bss
->freq
);
3649 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3652 memset(&iwe
, 0, sizeof(iwe
));
3654 iwe
.u
.qual
.qual
= bss
->signal
;
3655 iwe
.u
.qual
.level
= bss
->rssi
;
3656 iwe
.u
.qual
.noise
= bss
->noise
;
3657 iwe
.u
.qual
.updated
= local
->wstats_flags
;
3658 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3661 memset(&iwe
, 0, sizeof(iwe
));
3662 iwe
.cmd
= SIOCGIWENCODE
;
3663 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
3664 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
3666 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
3667 iwe
.u
.data
.length
= 0;
3668 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
3670 if (bss
&& bss
->wpa_ie
) {
3671 memset(&iwe
, 0, sizeof(iwe
));
3672 iwe
.cmd
= IWEVGENIE
;
3673 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
3674 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3678 if (bss
&& bss
->rsn_ie
) {
3679 memset(&iwe
, 0, sizeof(iwe
));
3680 iwe
.cmd
= IWEVGENIE
;
3681 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
3682 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3686 if (bss
&& bss
->supp_rates_len
> 0) {
3687 /* display all supported rates in readable format */
3688 char *p
= current_ev
+ IW_EV_LCP_LEN
;
3691 memset(&iwe
, 0, sizeof(iwe
));
3692 iwe
.cmd
= SIOCGIWRATE
;
3693 /* Those two flags are ignored... */
3694 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
3696 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
3697 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
3699 p
= iwe_stream_add_value(current_ev
, p
,
3700 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
3707 buf
= kmalloc(30, GFP_ATOMIC
);
3709 memset(&iwe
, 0, sizeof(iwe
));
3710 iwe
.cmd
= IWEVCUSTOM
;
3711 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
3712 iwe
.u
.data
.length
= strlen(buf
);
3713 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
3723 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
3725 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3726 char *current_ev
= buf
;
3727 char *end_buf
= buf
+ len
;
3728 struct ieee80211_sta_bss
*bss
;
3730 spin_lock_bh(&local
->sta_bss_lock
);
3731 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3732 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
3733 spin_unlock_bh(&local
->sta_bss_lock
);
3736 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
3739 spin_unlock_bh(&local
->sta_bss_lock
);
3740 return current_ev
- buf
;
3744 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
3746 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3747 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3748 kfree(ifsta
->extra_ie
);
3750 ifsta
->extra_ie
= NULL
;
3751 ifsta
->extra_ie_len
= 0;
3754 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
3755 if (!ifsta
->extra_ie
) {
3756 ifsta
->extra_ie_len
= 0;
3759 memcpy(ifsta
->extra_ie
, ie
, len
);
3760 ifsta
->extra_ie_len
= len
;
3765 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
3766 struct sk_buff
*skb
, u8
*bssid
,
3769 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3770 struct sta_info
*sta
;
3771 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3772 DECLARE_MAC_BUF(mac
);
3774 /* TODO: Could consider removing the least recently used entry and
3775 * allow new one to be added. */
3776 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
3777 if (net_ratelimit()) {
3778 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
3779 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
3784 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
3785 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
3787 sta
= sta_info_add(local
, dev
, addr
, GFP_ATOMIC
);
3791 sta
->flags
|= WLAN_STA_AUTHORIZED
;
3793 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] =
3794 sdata
->u
.sta
.supp_rates_bits
[local
->hw
.conf
.channel
->band
];
3796 rate_control_rate_init(sta
, local
);
3798 return sta
; /* caller will call sta_info_put() */
3802 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
3804 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3805 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3807 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
3810 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
3811 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
3814 ieee80211_send_deauth(dev
, ifsta
, reason
);
3815 ieee80211_set_disassoc(dev
, ifsta
, 1);
3820 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
3822 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3823 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3825 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
3828 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3831 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
3834 ieee80211_send_disassoc(dev
, ifsta
, reason
);
3835 ieee80211_set_disassoc(dev
, ifsta
, 0);