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 channel
,
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
)
238 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
239 struct ieee80211_if_sta
*ifsta
,
240 u8
*wmm_param
, size_t wmm_param_len
)
242 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
243 struct ieee80211_tx_queue_params params
;
248 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
250 count
= wmm_param
[6] & 0x0f;
251 if (count
== ifsta
->wmm_last_param_set
)
253 ifsta
->wmm_last_param_set
= count
;
256 left
= wmm_param_len
- 8;
258 memset(¶ms
, 0, sizeof(params
));
260 if (!local
->ops
->conf_tx
)
264 for (; left
>= 4; left
-= 4, pos
+= 4) {
265 int aci
= (pos
[0] >> 5) & 0x03;
266 int acm
= (pos
[0] >> 4) & 0x01;
271 queue
= IEEE80211_TX_QUEUE_DATA3
;
273 local
->wmm_acm
|= BIT(0) | BIT(3);
277 queue
= IEEE80211_TX_QUEUE_DATA1
;
279 local
->wmm_acm
|= BIT(4) | BIT(5);
283 queue
= IEEE80211_TX_QUEUE_DATA0
;
285 local
->wmm_acm
|= BIT(6) | BIT(7);
290 queue
= IEEE80211_TX_QUEUE_DATA2
;
292 local
->wmm_acm
|= BIT(1) | BIT(2);
297 params
.aifs
= pos
[0] & 0x0f;
298 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
299 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
300 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
301 params
.burst_time
= (pos
[2] | (pos
[3] << 8)) * 32 / 100;
302 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
303 "cWmin=%d cWmax=%d burst=%d\n",
304 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
305 params
.cw_max
, params
.burst_time
);
306 /* TODO: handle ACM (block TX, fallback to next lowest allowed
308 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
309 printk(KERN_DEBUG
"%s: failed to set TX queue "
310 "parameters for queue %d\n", dev
->name
, queue
);
315 static u32
ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data
*sdata
,
317 bool use_short_preamble
)
319 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
320 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
321 DECLARE_MAC_BUF(mac
);
324 if (use_protection
!= bss_conf
->use_cts_prot
) {
325 if (net_ratelimit()) {
326 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
329 use_protection
? "enabled" : "disabled",
330 print_mac(mac
, ifsta
->bssid
));
332 bss_conf
->use_cts_prot
= use_protection
;
333 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
336 if (use_short_preamble
!= bss_conf
->use_short_preamble
) {
337 if (net_ratelimit()) {
338 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
341 use_short_preamble
? "short" : "long",
342 print_mac(mac
, ifsta
->bssid
));
344 bss_conf
->use_short_preamble
= use_short_preamble
;
345 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
351 static u32
ieee80211_handle_erp_ie(struct ieee80211_sub_if_data
*sdata
,
354 bool use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
355 bool use_short_preamble
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) == 0;
357 return ieee80211_handle_protect_preamb(sdata
,
358 use_protection
, use_short_preamble
);
361 static u32
ieee80211_handle_bss_capability(struct ieee80211_sub_if_data
*sdata
,
362 struct ieee80211_sta_bss
*bss
)
366 if (bss
->has_erp_value
)
367 changed
|= ieee80211_handle_erp_ie(sdata
, bss
->erp_value
);
369 u16 capab
= bss
->capability
;
370 changed
|= ieee80211_handle_protect_preamb(sdata
, false,
371 (capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
) != 0);
377 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap
*ht_cap_ie
,
378 struct ieee80211_ht_info
*ht_info
)
384 memset(ht_info
, 0, sizeof(*ht_info
));
387 u8 ampdu_info
= ht_cap_ie
->ampdu_params_info
;
389 ht_info
->ht_supported
= 1;
390 ht_info
->cap
= le16_to_cpu(ht_cap_ie
->cap_info
);
391 ht_info
->ampdu_factor
=
392 ampdu_info
& IEEE80211_HT_CAP_AMPDU_FACTOR
;
393 ht_info
->ampdu_density
=
394 (ampdu_info
& IEEE80211_HT_CAP_AMPDU_DENSITY
) >> 2;
395 memcpy(ht_info
->supp_mcs_set
, ht_cap_ie
->supp_mcs_set
, 16);
397 ht_info
->ht_supported
= 0;
402 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
403 struct ieee80211_ht_addt_info
*ht_add_info_ie
,
404 struct ieee80211_ht_bss_info
*bss_info
)
406 if (bss_info
== NULL
)
409 memset(bss_info
, 0, sizeof(*bss_info
));
411 if (ht_add_info_ie
) {
413 op_mode
= le16_to_cpu(ht_add_info_ie
->operation_mode
);
415 bss_info
->primary_channel
= ht_add_info_ie
->control_chan
;
416 bss_info
->bss_cap
= ht_add_info_ie
->ht_param
;
417 bss_info
->bss_op_mode
= (u8
)(op_mode
& 0xff);
423 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
424 struct ieee80211_if_sta
*ifsta
)
429 union iwreq_data wrqu
;
431 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
434 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
435 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
439 len
= sprintf(buf
, "ASSOCINFO(");
440 if (ifsta
->assocreq_ies
) {
441 len
+= sprintf(buf
+ len
, "ReqIEs=");
442 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
443 len
+= sprintf(buf
+ len
, "%02x",
444 ifsta
->assocreq_ies
[i
]);
447 if (ifsta
->assocresp_ies
) {
448 if (ifsta
->assocreq_ies
)
449 len
+= sprintf(buf
+ len
, " ");
450 len
+= sprintf(buf
+ len
, "RespIEs=");
451 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
452 len
+= sprintf(buf
+ len
, "%02x",
453 ifsta
->assocresp_ies
[i
]);
456 len
+= sprintf(buf
+ len
, ")");
458 if (len
> IW_CUSTOM_MAX
) {
459 len
= sprintf(buf
, "ASSOCRESPIE=");
460 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
461 len
+= sprintf(buf
+ len
, "%02x",
462 ifsta
->assocresp_ies
[i
]);
466 memset(&wrqu
, 0, sizeof(wrqu
));
467 wrqu
.data
.length
= len
;
468 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
474 static void ieee80211_set_associated(struct net_device
*dev
,
475 struct ieee80211_if_sta
*ifsta
,
478 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
479 struct ieee80211_local
*local
= sdata
->local
;
480 union iwreq_data wrqu
;
481 u32 changed
= BSS_CHANGED_ASSOC
;
484 struct ieee80211_sta_bss
*bss
;
486 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
488 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
491 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
492 local
->hw
.conf
.channel
,
493 ifsta
->ssid
, ifsta
->ssid_len
);
495 changed
|= ieee80211_handle_bss_capability(sdata
, bss
);
496 ieee80211_rx_bss_put(dev
, bss
);
499 netif_carrier_on(dev
);
500 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
501 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
502 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
503 ieee80211_sta_send_associnfo(dev
, ifsta
);
505 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
507 netif_carrier_off(dev
);
508 ieee80211_reset_erp_info(dev
);
509 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
511 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
512 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
513 ifsta
->last_probe
= jiffies
;
514 ieee80211_led_assoc(local
, assoc
);
516 ieee80211_bss_info_change_notify(sdata
, changed
);
519 static void ieee80211_set_disassoc(struct net_device
*dev
,
520 struct ieee80211_if_sta
*ifsta
, int deauth
)
523 ifsta
->auth_tries
= 0;
524 ifsta
->assoc_tries
= 0;
525 ieee80211_set_associated(dev
, ifsta
, 0);
528 static void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
531 struct ieee80211_sub_if_data
*sdata
;
532 struct ieee80211_tx_packet_data
*pkt_data
;
534 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
535 skb
->dev
= sdata
->local
->mdev
;
536 skb_set_mac_header(skb
, 0);
537 skb_set_network_header(skb
, 0);
538 skb_set_transport_header(skb
, 0);
540 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
541 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
542 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
544 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
550 static void ieee80211_send_auth(struct net_device
*dev
,
551 struct ieee80211_if_sta
*ifsta
,
552 int transaction
, u8
*extra
, size_t extra_len
,
555 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
557 struct ieee80211_mgmt
*mgmt
;
559 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
560 sizeof(*mgmt
) + 6 + extra_len
);
562 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
563 "frame\n", dev
->name
);
566 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
568 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
569 memset(mgmt
, 0, 24 + 6);
570 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
571 IEEE80211_STYPE_AUTH
);
573 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
574 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
575 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
576 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
577 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
578 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
579 ifsta
->auth_transaction
= transaction
+ 1;
580 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
582 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
584 ieee80211_sta_tx(dev
, skb
, encrypt
);
588 static void ieee80211_authenticate(struct net_device
*dev
,
589 struct ieee80211_if_sta
*ifsta
)
591 DECLARE_MAC_BUF(mac
);
594 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
595 printk(KERN_DEBUG
"%s: authentication with AP %s"
597 dev
->name
, print_mac(mac
, ifsta
->bssid
));
598 ifsta
->state
= IEEE80211_DISABLED
;
602 ifsta
->state
= IEEE80211_AUTHENTICATE
;
603 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
604 dev
->name
, print_mac(mac
, ifsta
->bssid
));
606 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
608 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
612 static void ieee80211_send_assoc(struct net_device
*dev
,
613 struct ieee80211_if_sta
*ifsta
)
615 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
616 struct ieee80211_hw_mode
*mode
;
618 struct ieee80211_mgmt
*mgmt
;
622 struct ieee80211_sta_bss
*bss
;
625 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
626 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
629 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
630 "frame\n", dev
->name
);
633 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
635 mode
= local
->oper_hw_mode
;
636 capab
= ifsta
->capab
;
637 if (mode
->mode
== MODE_IEEE80211G
) {
638 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
|
639 WLAN_CAPABILITY_SHORT_PREAMBLE
;
641 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
, local
->hw
.conf
.channel
,
642 ifsta
->ssid
, ifsta
->ssid_len
);
644 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
645 capab
|= WLAN_CAPABILITY_PRIVACY
;
649 ieee80211_rx_bss_put(dev
, bss
);
652 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
654 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
655 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
656 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
658 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
660 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
661 IEEE80211_STYPE_REASSOC_REQ
);
662 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
663 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
664 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
668 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
669 IEEE80211_STYPE_ASSOC_REQ
);
670 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
671 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
675 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
676 *pos
++ = WLAN_EID_SSID
;
677 *pos
++ = ifsta
->ssid_len
;
678 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
680 len
= mode
->num_rates
;
683 pos
= skb_put(skb
, len
+ 2);
684 *pos
++ = WLAN_EID_SUPP_RATES
;
686 for (i
= 0; i
< len
; i
++) {
687 int rate
= mode
->rates
[i
].rate
;
688 *pos
++ = (u8
) (rate
/ 5);
691 if (mode
->num_rates
> len
) {
692 pos
= skb_put(skb
, mode
->num_rates
- len
+ 2);
693 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
694 *pos
++ = mode
->num_rates
- len
;
695 for (i
= len
; i
< mode
->num_rates
; i
++) {
696 int rate
= mode
->rates
[i
].rate
;
697 *pos
++ = (u8
) (rate
/ 5);
701 if (ifsta
->extra_ie
) {
702 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
703 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
706 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
707 pos
= skb_put(skb
, 9);
708 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
709 *pos
++ = 7; /* len */
710 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
713 *pos
++ = 2; /* WME */
714 *pos
++ = 0; /* WME info */
715 *pos
++ = 1; /* WME ver */
718 /* wmm support is a must to HT */
719 if (wmm
&& mode
->ht_info
.ht_supported
) {
720 __le16 tmp
= cpu_to_le16(mode
->ht_info
.cap
);
721 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
)+2);
722 *pos
++ = WLAN_EID_HT_CAPABILITY
;
723 *pos
++ = sizeof(struct ieee80211_ht_cap
);
724 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
725 memcpy(pos
, &tmp
, sizeof(u16
));
727 *pos
++ = (mode
->ht_info
.ampdu_factor
|
728 (mode
->ht_info
.ampdu_density
<< 2));
729 memcpy(pos
, mode
->ht_info
.supp_mcs_set
, 16);
732 kfree(ifsta
->assocreq_ies
);
733 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
734 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
735 if (ifsta
->assocreq_ies
)
736 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
738 ieee80211_sta_tx(dev
, skb
, 0);
742 static void ieee80211_send_deauth(struct net_device
*dev
,
743 struct ieee80211_if_sta
*ifsta
, u16 reason
)
745 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
747 struct ieee80211_mgmt
*mgmt
;
749 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
751 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
752 "frame\n", dev
->name
);
755 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
757 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
759 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
760 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
761 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
762 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
763 IEEE80211_STYPE_DEAUTH
);
765 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
767 ieee80211_sta_tx(dev
, skb
, 0);
771 static void ieee80211_send_disassoc(struct net_device
*dev
,
772 struct ieee80211_if_sta
*ifsta
, u16 reason
)
774 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
776 struct ieee80211_mgmt
*mgmt
;
778 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
780 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
781 "frame\n", dev
->name
);
784 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
786 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
788 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
789 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
790 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
791 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
792 IEEE80211_STYPE_DISASSOC
);
794 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
796 ieee80211_sta_tx(dev
, skb
, 0);
800 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
801 struct ieee80211_if_sta
*ifsta
)
803 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
804 struct ieee80211_sta_bss
*bss
;
809 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
812 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
, local
->hw
.conf
.channel
,
813 ifsta
->ssid
, ifsta
->ssid_len
);
817 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
818 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
819 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
821 ieee80211_rx_bss_put(dev
, bss
);
823 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
830 static void ieee80211_associate(struct net_device
*dev
,
831 struct ieee80211_if_sta
*ifsta
)
833 DECLARE_MAC_BUF(mac
);
835 ifsta
->assoc_tries
++;
836 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
837 printk(KERN_DEBUG
"%s: association with AP %s"
839 dev
->name
, print_mac(mac
, ifsta
->bssid
));
840 ifsta
->state
= IEEE80211_DISABLED
;
844 ifsta
->state
= IEEE80211_ASSOCIATE
;
845 printk(KERN_DEBUG
"%s: associate with AP %s\n",
846 dev
->name
, print_mac(mac
, ifsta
->bssid
));
847 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
848 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
849 "mixed-cell disabled - abort association\n", dev
->name
);
850 ifsta
->state
= IEEE80211_DISABLED
;
854 ieee80211_send_assoc(dev
, ifsta
);
856 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
860 static void ieee80211_associated(struct net_device
*dev
,
861 struct ieee80211_if_sta
*ifsta
)
863 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
864 struct sta_info
*sta
;
866 DECLARE_MAC_BUF(mac
);
868 /* TODO: start monitoring current AP signal quality and number of
869 * missed beacons. Scan other channels every now and then and search
871 /* TODO: remove expired BSSes */
873 ifsta
->state
= IEEE80211_ASSOCIATED
;
875 sta
= sta_info_get(local
, ifsta
->bssid
);
877 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
878 dev
->name
, print_mac(mac
, ifsta
->bssid
));
882 if (time_after(jiffies
,
883 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
884 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
885 printk(KERN_DEBUG
"%s: No ProbeResp from "
886 "current AP %s - assume out of "
888 dev
->name
, print_mac(mac
, ifsta
->bssid
));
892 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
894 local
->scan_ssid_len
);
895 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
897 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
898 if (time_after(jiffies
, ifsta
->last_probe
+
899 IEEE80211_PROBE_INTERVAL
)) {
900 ifsta
->last_probe
= jiffies
;
901 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
909 ifsta
->state
= IEEE80211_DISABLED
;
910 ieee80211_set_associated(dev
, ifsta
, 0);
912 mod_timer(&ifsta
->timer
, jiffies
+
913 IEEE80211_MONITORING_INTERVAL
);
918 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
919 u8
*ssid
, size_t ssid_len
)
921 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
922 struct ieee80211_hw_mode
*mode
;
924 struct ieee80211_mgmt
*mgmt
;
925 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
928 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
930 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
931 "request\n", dev
->name
);
934 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
936 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
938 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
939 IEEE80211_STYPE_PROBE_REQ
);
940 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
942 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
943 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
945 memset(mgmt
->da
, 0xff, ETH_ALEN
);
946 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
948 pos
= skb_put(skb
, 2 + ssid_len
);
949 *pos
++ = WLAN_EID_SSID
;
951 memcpy(pos
, ssid
, ssid_len
);
953 supp_rates
= skb_put(skb
, 2);
954 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
956 mode
= local
->oper_hw_mode
;
957 for (i
= 0; i
< mode
->num_rates
; i
++) {
958 struct ieee80211_rate
*rate
= &mode
->rates
[i
];
959 if (!(rate
->flags
& IEEE80211_RATE_SUPPORTED
))
962 pos
= skb_put(skb
, 1);
964 } else if (supp_rates
[1] == 8) {
965 esupp_rates
= skb_put(skb
, 3);
966 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
968 pos
= &esupp_rates
[2];
970 pos
= skb_put(skb
, 1);
973 *pos
= rate
->rate
/ 5;
976 ieee80211_sta_tx(dev
, skb
, 0);
980 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
982 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
983 if (!sdata
|| !sdata
->default_key
||
984 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
990 static void ieee80211_auth_completed(struct net_device
*dev
,
991 struct ieee80211_if_sta
*ifsta
)
993 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
994 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
995 ieee80211_associate(dev
, ifsta
);
999 static void ieee80211_auth_challenge(struct net_device
*dev
,
1000 struct ieee80211_if_sta
*ifsta
,
1001 struct ieee80211_mgmt
*mgmt
,
1005 struct ieee802_11_elems elems
;
1007 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
1008 pos
= mgmt
->u
.auth
.variable
;
1009 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1010 if (!elems
.challenge
) {
1011 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
1012 "frame\n", dev
->name
);
1015 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
1016 elems
.challenge_len
+ 2, 1);
1019 static void ieee80211_send_addba_resp(struct net_device
*dev
, u8
*da
, u16 tid
,
1020 u8 dialog_token
, u16 status
, u16 policy
,
1021 u16 buf_size
, u16 timeout
)
1023 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1024 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1025 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1026 struct sk_buff
*skb
;
1027 struct ieee80211_mgmt
*mgmt
;
1030 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1031 sizeof(mgmt
->u
.action
.u
.addba_resp
));
1033 printk(KERN_DEBUG
"%s: failed to allocate buffer "
1034 "for addba resp frame\n", dev
->name
);
1038 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1039 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1040 memset(mgmt
, 0, 24);
1041 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1042 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1043 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1044 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1046 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1047 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1048 IEEE80211_STYPE_ACTION
);
1050 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
1051 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1052 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
1053 mgmt
->u
.action
.u
.addba_resp
.dialog_token
= dialog_token
;
1055 capab
= (u16
)(policy
<< 1); /* bit 1 aggregation policy */
1056 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1057 capab
|= (u16
)(buf_size
<< 6); /* bit 15:6 max size of aggregation */
1059 mgmt
->u
.action
.u
.addba_resp
.capab
= cpu_to_le16(capab
);
1060 mgmt
->u
.action
.u
.addba_resp
.timeout
= cpu_to_le16(timeout
);
1061 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
1063 ieee80211_sta_tx(dev
, skb
, 0);
1068 static void ieee80211_sta_process_addba_request(struct net_device
*dev
,
1069 struct ieee80211_mgmt
*mgmt
,
1072 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1073 struct ieee80211_hw
*hw
= &local
->hw
;
1074 struct ieee80211_conf
*conf
= &hw
->conf
;
1075 struct sta_info
*sta
;
1076 struct tid_ampdu_rx
*tid_agg_rx
;
1077 u16 capab
, tid
, timeout
, ba_policy
, buf_size
, start_seq_num
, status
;
1079 int ret
= -EOPNOTSUPP
;
1080 DECLARE_MAC_BUF(mac
);
1082 sta
= sta_info_get(local
, mgmt
->sa
);
1086 /* extract session parameters from addba request frame */
1087 dialog_token
= mgmt
->u
.action
.u
.addba_req
.dialog_token
;
1088 timeout
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.timeout
);
1090 le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.start_seq_num
) >> 4;
1092 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.capab
);
1093 ba_policy
= (capab
& IEEE80211_ADDBA_PARAM_POLICY_MASK
) >> 1;
1094 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1095 buf_size
= (capab
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
) >> 6;
1097 status
= WLAN_STATUS_REQUEST_DECLINED
;
1099 /* sanity check for incoming parameters:
1100 * check if configuration can support the BA policy
1101 * and if buffer size does not exceeds max value */
1102 if (((ba_policy
!= 1)
1103 && (!(conf
->ht_conf
.cap
& IEEE80211_HT_CAP_DELAY_BA
)))
1104 || (buf_size
> IEEE80211_MAX_AMPDU_BUF
)) {
1105 status
= WLAN_STATUS_INVALID_QOS_PARAM
;
1106 #ifdef CONFIG_MAC80211_HT_DEBUG
1107 if (net_ratelimit())
1108 printk(KERN_DEBUG
"Block Ack Req with bad params from "
1109 "%s on tid %u. policy %d, buffer size %d\n",
1110 print_mac(mac
, mgmt
->sa
), tid
, ba_policy
,
1112 #endif /* CONFIG_MAC80211_HT_DEBUG */
1115 /* determine default buffer size */
1116 if (buf_size
== 0) {
1117 struct ieee80211_hw_mode
*mode
= conf
->mode
;
1118 buf_size
= IEEE80211_MIN_AMPDU_BUF
;
1119 buf_size
= buf_size
<< mode
->ht_info
.ampdu_factor
;
1122 tid_agg_rx
= &sta
->ampdu_mlme
.tid_rx
[tid
];
1124 /* examine state machine */
1125 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1127 if (tid_agg_rx
->state
!= HT_AGG_STATE_IDLE
) {
1128 #ifdef CONFIG_MAC80211_HT_DEBUG
1129 if (net_ratelimit())
1130 printk(KERN_DEBUG
"unexpected Block Ack Req from "
1132 print_mac(mac
, mgmt
->sa
), tid
);
1133 #endif /* CONFIG_MAC80211_HT_DEBUG */
1137 /* prepare reordering buffer */
1138 tid_agg_rx
->reorder_buf
=
1139 kmalloc(buf_size
* sizeof(struct sk_buf
*), GFP_ATOMIC
);
1140 if (!tid_agg_rx
->reorder_buf
) {
1141 if (net_ratelimit())
1142 printk(KERN_ERR
"can not allocate reordering buffer "
1143 "to tid %d\n", tid
);
1146 memset(tid_agg_rx
->reorder_buf
, 0,
1147 buf_size
* sizeof(struct sk_buf
*));
1149 if (local
->ops
->ampdu_action
)
1150 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_START
,
1151 sta
->addr
, tid
, start_seq_num
);
1152 #ifdef CONFIG_MAC80211_HT_DEBUG
1153 printk(KERN_DEBUG
"Rx A-MPDU on tid %d result %d", tid
, ret
);
1154 #endif /* CONFIG_MAC80211_HT_DEBUG */
1157 kfree(tid_agg_rx
->reorder_buf
);
1161 /* change state and send addba resp */
1162 tid_agg_rx
->state
= HT_AGG_STATE_OPERATIONAL
;
1163 tid_agg_rx
->dialog_token
= dialog_token
;
1164 tid_agg_rx
->ssn
= start_seq_num
;
1165 tid_agg_rx
->head_seq_num
= start_seq_num
;
1166 tid_agg_rx
->buf_size
= buf_size
;
1167 tid_agg_rx
->timeout
= timeout
;
1168 tid_agg_rx
->stored_mpdu_num
= 0;
1169 status
= WLAN_STATUS_SUCCESS
;
1171 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1174 ieee80211_send_addba_resp(sta
->dev
, sta
->addr
, tid
, dialog_token
,
1175 status
, 1, buf_size
, timeout
);
1179 static void ieee80211_send_delba(struct net_device
*dev
, const u8
*da
, u16 tid
,
1180 u16 initiator
, u16 reason_code
)
1182 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1183 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1184 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1185 struct sk_buff
*skb
;
1186 struct ieee80211_mgmt
*mgmt
;
1189 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1190 sizeof(mgmt
->u
.action
.u
.delba
));
1193 printk(KERN_ERR
"%s: failed to allocate buffer "
1194 "for delba frame\n", dev
->name
);
1198 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1199 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1200 memset(mgmt
, 0, 24);
1201 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1202 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1203 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1204 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1206 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1207 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1208 IEEE80211_STYPE_ACTION
);
1210 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.delba
));
1212 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1213 mgmt
->u
.action
.u
.delba
.action_code
= WLAN_ACTION_DELBA
;
1214 params
= (u16
)(initiator
<< 11); /* bit 11 initiator */
1215 params
|= (u16
)(tid
<< 12); /* bit 15:12 TID number */
1217 mgmt
->u
.action
.u
.delba
.params
= cpu_to_le16(params
);
1218 mgmt
->u
.action
.u
.delba
.reason_code
= cpu_to_le16(reason_code
);
1220 ieee80211_sta_tx(dev
, skb
, 0);
1223 void ieee80211_sta_stop_rx_ba_session(struct net_device
*dev
, u8
*ra
, u16 tid
,
1224 u16 initiator
, u16 reason
)
1226 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1227 struct ieee80211_hw
*hw
= &local
->hw
;
1228 struct sta_info
*sta
;
1231 sta
= sta_info_get(local
, ra
);
1235 /* check if TID is in operational state */
1236 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1237 if (sta
->ampdu_mlme
.tid_rx
[tid
].state
1238 != HT_AGG_STATE_OPERATIONAL
) {
1239 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1243 sta
->ampdu_mlme
.tid_rx
[tid
].state
=
1244 HT_AGG_STATE_REQ_STOP_BA_MSK
|
1245 (initiator
<< HT_AGG_STATE_INITIATOR_SHIFT
);
1246 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1248 /* stop HW Rx aggregation. ampdu_action existence
1249 * already verified in session init so we add the BUG_ON */
1250 BUG_ON(!local
->ops
->ampdu_action
);
1252 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_STOP
,
1255 printk(KERN_DEBUG
"HW problem - can not stop rx "
1256 "aggergation for tid %d\n", tid
);
1258 /* shutdown timer has not expired */
1259 if (initiator
!= WLAN_BACK_TIMER
)
1260 del_timer_sync(&sta
->ampdu_mlme
.tid_rx
[tid
].
1263 /* check if this is a self generated aggregation halt */
1264 if (initiator
== WLAN_BACK_RECIPIENT
|| initiator
== WLAN_BACK_TIMER
)
1265 ieee80211_send_delba(dev
, ra
, tid
, 0, reason
);
1267 /* free the reordering buffer */
1268 for (i
= 0; i
< sta
->ampdu_mlme
.tid_rx
[tid
].buf_size
; i
++) {
1269 if (sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
[i
]) {
1270 /* release the reordered frames */
1271 dev_kfree_skb(sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
[i
]);
1272 sta
->ampdu_mlme
.tid_rx
[tid
].stored_mpdu_num
--;
1273 sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
[i
] = NULL
;
1276 kfree(sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
);
1278 sta
->ampdu_mlme
.tid_rx
[tid
].state
= HT_AGG_STATE_IDLE
;
1282 static void ieee80211_sta_process_delba(struct net_device
*dev
,
1283 struct ieee80211_mgmt
*mgmt
, size_t len
)
1285 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1286 struct sta_info
*sta
;
1289 DECLARE_MAC_BUF(mac
);
1291 sta
= sta_info_get(local
, mgmt
->sa
);
1295 params
= le16_to_cpu(mgmt
->u
.action
.u
.delba
.params
);
1296 tid
= (params
& IEEE80211_DELBA_PARAM_TID_MASK
) >> 12;
1297 initiator
= (params
& IEEE80211_DELBA_PARAM_INITIATOR_MASK
) >> 11;
1299 #ifdef CONFIG_MAC80211_HT_DEBUG
1300 if (net_ratelimit())
1301 printk(KERN_DEBUG
"delba from %s on tid %d reason code %d\n",
1302 print_mac(mac
, mgmt
->sa
), tid
,
1303 mgmt
->u
.action
.u
.delba
.reason_code
);
1304 #endif /* CONFIG_MAC80211_HT_DEBUG */
1306 if (initiator
== WLAN_BACK_INITIATOR
)
1307 ieee80211_sta_stop_rx_ba_session(dev
, sta
->addr
, tid
,
1308 WLAN_BACK_INITIATOR
, 0);
1313 * After receiving Block Ack Request (BAR) we activated a
1314 * timer after each frame arrives from the originator.
1315 * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
1317 void sta_rx_agg_session_timer_expired(unsigned long data
)
1319 /* not an elegant detour, but there is no choice as the timer passes
1320 * only one argument, and verious sta_info are needed here, so init
1321 * flow in sta_info_add gives the TID as data, while the timer_to_id
1322 * array gives the sta through container_of */
1323 u8
*ptid
= (u8
*)data
;
1324 u8
*timer_to_id
= ptid
- *ptid
;
1325 struct sta_info
*sta
= container_of(timer_to_id
, struct sta_info
,
1328 printk(KERN_DEBUG
"rx session timer expired on tid %d\n", (u16
)*ptid
);
1329 ieee80211_sta_stop_rx_ba_session(sta
->dev
, sta
->addr
, (u16
)*ptid
,
1331 WLAN_REASON_QSTA_TIMEOUT
);
1335 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1336 struct ieee80211_if_sta
*ifsta
,
1337 struct ieee80211_mgmt
*mgmt
,
1340 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1341 u16 auth_alg
, auth_transaction
, status_code
;
1342 DECLARE_MAC_BUF(mac
);
1344 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1345 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
) {
1346 printk(KERN_DEBUG
"%s: authentication frame received from "
1347 "%s, but not in authenticate state - ignored\n",
1348 dev
->name
, print_mac(mac
, mgmt
->sa
));
1353 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
1354 "received from %s - ignored\n",
1355 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1359 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1360 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1361 printk(KERN_DEBUG
"%s: authentication frame received from "
1362 "unknown AP (SA=%s BSSID=%s) - "
1363 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1364 print_mac(mac
, mgmt
->bssid
));
1368 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1369 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
1370 printk(KERN_DEBUG
"%s: authentication frame received from "
1371 "unknown BSSID (SA=%s BSSID=%s) - "
1372 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1373 print_mac(mac
, mgmt
->bssid
));
1377 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1378 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1379 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1381 printk(KERN_DEBUG
"%s: RX authentication from %s (alg=%d "
1382 "transaction=%d status=%d)\n",
1383 dev
->name
, print_mac(mac
, mgmt
->sa
), auth_alg
,
1384 auth_transaction
, status_code
);
1386 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
1387 /* IEEE 802.11 standard does not require authentication in IBSS
1388 * networks and most implementations do not seem to use it.
1389 * However, try to reply to authentication attempts if someone
1390 * has actually implemented this.
1391 * TODO: Could implement shared key authentication. */
1392 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
1393 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
1394 "frame (alg=%d transaction=%d)\n",
1395 dev
->name
, auth_alg
, auth_transaction
);
1398 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1401 if (auth_alg
!= ifsta
->auth_alg
||
1402 auth_transaction
!= ifsta
->auth_transaction
) {
1403 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1404 "(alg=%d transaction=%d)\n",
1405 dev
->name
, auth_alg
, auth_transaction
);
1409 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1410 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1411 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1412 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1414 const int num_algs
= ARRAY_SIZE(algs
);
1416 algs
[0] = algs
[1] = algs
[2] = 0xff;
1417 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1418 algs
[0] = WLAN_AUTH_OPEN
;
1419 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1420 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1421 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1422 algs
[2] = WLAN_AUTH_LEAP
;
1423 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1425 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1429 for (i
= 0; i
< num_algs
; i
++) {
1431 if (pos
>= num_algs
)
1433 if (algs
[pos
] == ifsta
->auth_alg
||
1436 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1437 !ieee80211_sta_wep_configured(dev
))
1439 ifsta
->auth_alg
= algs
[pos
];
1440 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1442 dev
->name
, ifsta
->auth_alg
);
1449 switch (ifsta
->auth_alg
) {
1450 case WLAN_AUTH_OPEN
:
1451 case WLAN_AUTH_LEAP
:
1452 ieee80211_auth_completed(dev
, ifsta
);
1454 case WLAN_AUTH_SHARED_KEY
:
1455 if (ifsta
->auth_transaction
== 4)
1456 ieee80211_auth_completed(dev
, ifsta
);
1458 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1464 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1465 struct ieee80211_if_sta
*ifsta
,
1466 struct ieee80211_mgmt
*mgmt
,
1470 DECLARE_MAC_BUF(mac
);
1473 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1474 "received from %s - ignored\n",
1475 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1479 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1480 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1481 "unknown AP (SA=%s BSSID=%s) - "
1482 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1483 print_mac(mac
, mgmt
->bssid
));
1487 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1489 printk(KERN_DEBUG
"%s: RX deauthentication from %s"
1491 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1493 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1494 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1497 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1498 ifsta
->state
== IEEE80211_ASSOCIATE
||
1499 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1500 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1501 mod_timer(&ifsta
->timer
, jiffies
+
1502 IEEE80211_RETRY_AUTH_INTERVAL
);
1505 ieee80211_set_disassoc(dev
, ifsta
, 1);
1506 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1510 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1511 struct ieee80211_if_sta
*ifsta
,
1512 struct ieee80211_mgmt
*mgmt
,
1516 DECLARE_MAC_BUF(mac
);
1519 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1520 "received from %s - ignored\n",
1521 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1525 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1526 printk(KERN_DEBUG
"%s: disassociation frame received from "
1527 "unknown AP (SA=%s BSSID=%s) - "
1528 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1529 print_mac(mac
, mgmt
->bssid
));
1533 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1535 printk(KERN_DEBUG
"%s: RX disassociation from %s"
1537 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1539 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1540 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1542 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1543 ifsta
->state
= IEEE80211_ASSOCIATE
;
1544 mod_timer(&ifsta
->timer
, jiffies
+
1545 IEEE80211_RETRY_AUTH_INTERVAL
);
1548 ieee80211_set_disassoc(dev
, ifsta
, 0);
1552 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
1553 struct ieee80211_if_sta
*ifsta
,
1554 struct ieee80211_mgmt
*mgmt
,
1558 struct ieee80211_local
*local
= sdata
->local
;
1559 struct net_device
*dev
= sdata
->dev
;
1560 struct ieee80211_hw_mode
*mode
;
1561 struct sta_info
*sta
;
1563 u16 capab_info
, status_code
, aid
;
1564 struct ieee802_11_elems elems
;
1565 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
1568 DECLARE_MAC_BUF(mac
);
1570 /* AssocResp and ReassocResp have identical structure, so process both
1571 * of them in this function. */
1573 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1574 printk(KERN_DEBUG
"%s: association frame received from "
1575 "%s, but not in associate state - ignored\n",
1576 dev
->name
, print_mac(mac
, mgmt
->sa
));
1581 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1582 "received from %s - ignored\n",
1583 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1587 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1588 printk(KERN_DEBUG
"%s: association frame received from "
1589 "unknown AP (SA=%s BSSID=%s) - "
1590 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1591 print_mac(mac
, mgmt
->bssid
));
1595 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1596 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1597 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1599 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
1600 "status=%d aid=%d)\n",
1601 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
1602 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
1604 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1605 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1606 dev
->name
, status_code
);
1607 /* if this was a reassociation, ensure we try a "full"
1608 * association next time. This works around some broken APs
1609 * which do not correctly reject reassociation requests. */
1610 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1614 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1615 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1616 "set\n", dev
->name
, aid
);
1617 aid
&= ~(BIT(15) | BIT(14));
1619 pos
= mgmt
->u
.assoc_resp
.variable
;
1620 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1622 if (!elems
.supp_rates
) {
1623 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1628 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1630 ifsta
->ap_capab
= capab_info
;
1632 kfree(ifsta
->assocresp_ies
);
1633 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1634 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1635 if (ifsta
->assocresp_ies
)
1636 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1638 /* set AID, ieee80211_set_associated() will tell the driver */
1639 bss_conf
->aid
= aid
;
1640 ieee80211_set_associated(dev
, ifsta
, 1);
1642 /* Add STA entry for the AP */
1643 sta
= sta_info_get(local
, ifsta
->bssid
);
1645 struct ieee80211_sta_bss
*bss
;
1646 sta
= sta_info_add(local
, dev
, ifsta
->bssid
, GFP_KERNEL
);
1648 printk(KERN_DEBUG
"%s: failed to add STA entry for the"
1649 " AP\n", dev
->name
);
1652 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
1653 local
->hw
.conf
.channel
,
1654 ifsta
->ssid
, ifsta
->ssid_len
);
1656 sta
->last_rssi
= bss
->rssi
;
1657 sta
->last_signal
= bss
->signal
;
1658 sta
->last_noise
= bss
->noise
;
1659 ieee80211_rx_bss_put(dev
, bss
);
1664 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
;
1667 mode
= local
->oper_hw_mode
;
1668 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1669 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1670 for (j
= 0; j
< mode
->num_rates
; j
++)
1671 if (mode
->rates
[j
].rate
== rate
)
1674 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1675 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1676 for (j
= 0; j
< mode
->num_rates
; j
++)
1677 if (mode
->rates
[j
].rate
== rate
)
1680 sta
->supp_rates
= rates
;
1682 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&& elems
.wmm_param
&&
1683 local
->ops
->conf_ht
) {
1684 struct ieee80211_ht_bss_info bss_info
;
1686 ieee80211_ht_cap_ie_to_ht_info(
1687 (struct ieee80211_ht_cap
*)
1688 elems
.ht_cap_elem
, &sta
->ht_info
);
1689 ieee80211_ht_addt_info_ie_to_ht_bss_info(
1690 (struct ieee80211_ht_addt_info
*)
1691 elems
.ht_info_elem
, &bss_info
);
1692 ieee80211_hw_config_ht(local
, 1, &sta
->ht_info
, &bss_info
);
1695 rate_control_rate_init(sta
, local
);
1697 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1698 sta
->flags
|= WLAN_STA_WME
;
1699 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1700 elems
.wmm_param_len
);
1706 ieee80211_associated(dev
, ifsta
);
1710 /* Caller must hold local->sta_bss_lock */
1711 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
1712 struct ieee80211_sta_bss
*bss
)
1714 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1715 bss
->hnext
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1716 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] = bss
;
1720 /* Caller must hold local->sta_bss_lock */
1721 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
1722 struct ieee80211_sta_bss
*bss
)
1724 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1725 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
1726 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1730 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
1733 prev
->hnext
= bss
->hnext
;
1742 static struct ieee80211_sta_bss
*
1743 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int channel
,
1744 u8
*ssid
, u8 ssid_len
)
1746 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1747 struct ieee80211_sta_bss
*bss
;
1749 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
1752 atomic_inc(&bss
->users
);
1753 atomic_inc(&bss
->users
);
1754 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
1755 bss
->channel
= channel
;
1756 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
1757 memcpy(bss
->ssid
, ssid
, ssid_len
);
1758 bss
->ssid_len
= ssid_len
;
1761 spin_lock_bh(&local
->sta_bss_lock
);
1762 /* TODO: order by RSSI? */
1763 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
1764 __ieee80211_rx_bss_hash_add(dev
, bss
);
1765 spin_unlock_bh(&local
->sta_bss_lock
);
1770 static struct ieee80211_sta_bss
*
1771 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int channel
,
1772 u8
*ssid
, u8 ssid_len
)
1774 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1775 struct ieee80211_sta_bss
*bss
;
1777 spin_lock_bh(&local
->sta_bss_lock
);
1778 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
1780 if (!memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
1781 bss
->channel
== channel
&&
1782 bss
->ssid_len
== ssid_len
&&
1783 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
1784 atomic_inc(&bss
->users
);
1789 spin_unlock_bh(&local
->sta_bss_lock
);
1794 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
1804 static void ieee80211_rx_bss_put(struct net_device
*dev
,
1805 struct ieee80211_sta_bss
*bss
)
1807 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1808 if (!atomic_dec_and_test(&bss
->users
))
1811 spin_lock_bh(&local
->sta_bss_lock
);
1812 __ieee80211_rx_bss_hash_del(dev
, bss
);
1813 list_del(&bss
->list
);
1814 spin_unlock_bh(&local
->sta_bss_lock
);
1815 ieee80211_rx_bss_free(bss
);
1819 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
1821 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1822 spin_lock_init(&local
->sta_bss_lock
);
1823 INIT_LIST_HEAD(&local
->sta_bss_list
);
1827 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
1829 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1830 struct ieee80211_sta_bss
*bss
, *tmp
;
1832 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
1833 ieee80211_rx_bss_put(dev
, bss
);
1837 static void ieee80211_rx_bss_info(struct net_device
*dev
,
1838 struct ieee80211_mgmt
*mgmt
,
1840 struct ieee80211_rx_status
*rx_status
,
1843 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1844 struct ieee802_11_elems elems
;
1847 struct ieee80211_sta_bss
*bss
;
1848 struct sta_info
*sta
;
1849 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1851 DECLARE_MAC_BUF(mac
);
1852 DECLARE_MAC_BUF(mac2
);
1854 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
1855 return; /* ignore ProbeResp to foreign address */
1858 printk(KERN_DEBUG
"%s: RX %s from %s to %s\n",
1859 dev
->name
, beacon
? "Beacon" : "Probe Response",
1860 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
));
1863 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
1867 timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
1869 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
1870 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0) {
1871 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1872 static unsigned long last_tsf_debug
= 0;
1874 if (local
->ops
->get_tsf
)
1875 tsf
= local
->ops
->get_tsf(local_to_hw(local
));
1878 if (time_after(jiffies
, last_tsf_debug
+ 5 * HZ
)) {
1879 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
1880 "%s TSF=0x%llx BCN=0x%llx diff=%lld "
1882 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->bssid
),
1883 (unsigned long long)tsf
,
1884 (unsigned long long)timestamp
,
1885 (unsigned long long)(tsf
- timestamp
),
1887 last_tsf_debug
= jiffies
;
1889 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1892 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
1894 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
1895 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
1896 (sta
= sta_info_get(local
, mgmt
->sa
))) {
1897 struct ieee80211_hw_mode
*mode
;
1898 struct ieee80211_rate
*rates
;
1900 u32 supp_rates
, prev_rates
;
1903 mode
= local
->sta_sw_scanning
?
1904 local
->scan_hw_mode
: local
->oper_hw_mode
;
1906 if (local
->sta_hw_scanning
) {
1907 /* search for the correct mode matches the beacon */
1908 list_for_each_entry(mode
, &local
->modes_list
, list
)
1909 if (mode
->mode
== rx_status
->phymode
)
1913 mode
= local
->oper_hw_mode
;
1915 rates
= mode
->rates
;
1916 num_rates
= mode
->num_rates
;
1919 for (i
= 0; i
< elems
.supp_rates_len
+
1920 elems
.ext_supp_rates_len
; i
++) {
1923 if (i
< elems
.supp_rates_len
)
1924 rate
= elems
.supp_rates
[i
];
1925 else if (elems
.ext_supp_rates
)
1926 rate
= elems
.ext_supp_rates
1927 [i
- elems
.supp_rates_len
];
1928 own_rate
= 5 * (rate
& 0x7f);
1929 for (j
= 0; j
< num_rates
; j
++)
1930 if (rates
[j
].rate
== own_rate
)
1931 supp_rates
|= BIT(j
);
1934 prev_rates
= sta
->supp_rates
;
1935 sta
->supp_rates
&= supp_rates
;
1936 if (sta
->supp_rates
== 0) {
1937 /* No matching rates - this should not really happen.
1938 * Make sure that at least one rate is marked
1939 * supported to avoid issues with TX rate ctrl. */
1940 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
1942 if (sta
->supp_rates
!= prev_rates
) {
1943 printk(KERN_DEBUG
"%s: updated supp_rates set for "
1944 "%s based on beacon info (0x%x & 0x%x -> "
1946 dev
->name
, print_mac(mac
, sta
->addr
), prev_rates
,
1947 supp_rates
, sta
->supp_rates
);
1955 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
1956 channel
= elems
.ds_params
[0];
1958 channel
= rx_status
->channel
;
1960 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, channel
,
1961 elems
.ssid
, elems
.ssid_len
);
1963 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, channel
,
1964 elems
.ssid
, elems
.ssid_len
);
1969 /* TODO: order by RSSI? */
1970 spin_lock_bh(&local
->sta_bss_lock
);
1971 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
1972 spin_unlock_bh(&local
->sta_bss_lock
);
1976 if (bss
->probe_resp
&& beacon
) {
1977 /* Do not allow beacon to override data from Probe Response. */
1978 ieee80211_rx_bss_put(dev
, bss
);
1982 /* save the ERP value so that it is available at association time */
1983 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
1984 bss
->erp_value
= elems
.erp_info
[0];
1985 bss
->has_erp_value
= 1;
1988 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
1989 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
1991 bss
->supp_rates_len
= 0;
1992 if (elems
.supp_rates
) {
1993 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
1994 if (clen
> elems
.supp_rates_len
)
1995 clen
= elems
.supp_rates_len
;
1996 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
1998 bss
->supp_rates_len
+= clen
;
2000 if (elems
.ext_supp_rates
) {
2001 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2002 if (clen
> elems
.ext_supp_rates_len
)
2003 clen
= elems
.ext_supp_rates_len
;
2004 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
2005 elems
.ext_supp_rates
, clen
);
2006 bss
->supp_rates_len
+= clen
;
2010 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
2011 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
2013 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
2015 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
2016 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
2018 bss
->wpa_ie_len
= 0;
2019 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
2022 bss
->wpa_ie_len
= 0;
2026 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
2027 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
2029 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
2031 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
2032 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
2034 bss
->rsn_ie_len
= 0;
2035 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
2038 bss
->rsn_ie_len
= 0;
2041 if (elems
.wmm_param
&&
2042 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
2043 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
2045 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
2047 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
2048 elems
.wmm_param_len
+ 2);
2049 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
2051 bss
->wmm_ie_len
= 0;
2052 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
2055 bss
->wmm_ie_len
= 0;
2057 if (elems
.ht_cap_elem
&&
2058 (!bss
->ht_ie
|| bss
->ht_ie_len
!= elems
.ht_cap_elem_len
||
2059 memcmp(bss
->ht_ie
, elems
.ht_cap_elem
, elems
.ht_cap_elem_len
))) {
2061 bss
->ht_ie
= kmalloc(elems
.ht_cap_elem_len
+ 2, GFP_ATOMIC
);
2063 memcpy(bss
->ht_ie
, elems
.ht_cap_elem
- 2,
2064 elems
.ht_cap_elem_len
+ 2);
2065 bss
->ht_ie_len
= elems
.ht_cap_elem_len
+ 2;
2068 } else if (!elems
.ht_cap_elem
&& bss
->ht_ie
) {
2074 bss
->hw_mode
= rx_status
->phymode
;
2075 bss
->freq
= rx_status
->freq
;
2076 if (channel
!= rx_status
->channel
&&
2077 (bss
->hw_mode
== MODE_IEEE80211G
||
2078 bss
->hw_mode
== MODE_IEEE80211B
) &&
2079 channel
>= 1 && channel
<= 14) {
2080 static const int freq_list
[] = {
2081 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2082 2447, 2452, 2457, 2462, 2467, 2472, 2484
2084 /* IEEE 802.11g/b mode can receive packets from neighboring
2085 * channels, so map the channel into frequency. */
2086 bss
->freq
= freq_list
[channel
- 1];
2088 bss
->timestamp
= timestamp
;
2089 bss
->last_update
= jiffies
;
2090 bss
->rssi
= rx_status
->ssi
;
2091 bss
->signal
= rx_status
->signal
;
2092 bss
->noise
= rx_status
->noise
;
2095 ieee80211_rx_bss_put(dev
, bss
);
2099 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
2100 struct ieee80211_mgmt
*mgmt
,
2102 struct ieee80211_rx_status
*rx_status
)
2104 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
2108 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
2109 struct ieee80211_mgmt
*mgmt
,
2111 struct ieee80211_rx_status
*rx_status
)
2113 struct ieee80211_sub_if_data
*sdata
;
2114 struct ieee80211_if_sta
*ifsta
;
2116 struct ieee802_11_elems elems
;
2117 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2118 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
2121 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
2123 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2124 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2126 ifsta
= &sdata
->u
.sta
;
2128 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
2129 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
2132 /* Process beacon from the current BSS */
2133 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2137 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2139 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
2140 changed
|= ieee80211_handle_erp_ie(sdata
, elems
.erp_info
[0]);
2142 u16 capab
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2143 changed
|= ieee80211_handle_protect_preamb(sdata
, false,
2144 (capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
) != 0);
2147 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&&
2148 elems
.wmm_param
&& local
->ops
->conf_ht
&&
2149 conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
2150 struct ieee80211_ht_bss_info bss_info
;
2152 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2153 (struct ieee80211_ht_addt_info
*)
2154 elems
.ht_info_elem
, &bss_info
);
2155 /* check if AP changed bss inforamation */
2156 if ((conf
->ht_bss_conf
.primary_channel
!=
2157 bss_info
.primary_channel
) ||
2158 (conf
->ht_bss_conf
.bss_cap
!= bss_info
.bss_cap
) ||
2159 (conf
->ht_bss_conf
.bss_op_mode
!= bss_info
.bss_op_mode
))
2160 ieee80211_hw_config_ht(local
, 1, &conf
->ht_conf
,
2164 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2165 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2166 elems
.wmm_param_len
);
2169 ieee80211_bss_info_change_notify(sdata
, changed
);
2173 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
2174 struct ieee80211_if_sta
*ifsta
,
2175 struct ieee80211_mgmt
*mgmt
,
2177 struct ieee80211_rx_status
*rx_status
)
2179 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2180 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2182 struct sk_buff
*skb
;
2183 struct ieee80211_mgmt
*resp
;
2185 DECLARE_MAC_BUF(mac
);
2186 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2187 DECLARE_MAC_BUF(mac2
);
2188 DECLARE_MAC_BUF(mac3
);
2191 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
||
2192 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
2193 len
< 24 + 2 || !ifsta
->probe_resp
)
2196 if (local
->ops
->tx_last_beacon
)
2197 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
2201 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2202 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
2203 "%s (tx_last_beacon=%d)\n",
2204 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
2205 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
2206 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2208 if (!tx_last_beacon
)
2211 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
2212 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
2215 end
= ((u8
*) mgmt
) + len
;
2216 pos
= mgmt
->u
.probe_req
.variable
;
2217 if (pos
[0] != WLAN_EID_SSID
||
2218 pos
+ 2 + pos
[1] > end
) {
2219 if (net_ratelimit()) {
2220 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
2222 dev
->name
, print_mac(mac
, mgmt
->sa
));
2227 (pos
[1] != ifsta
->ssid_len
||
2228 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
2229 /* Ignore ProbeReq for foreign SSID */
2233 /* Reply with ProbeResp */
2234 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
2238 resp
= (struct ieee80211_mgmt
*) skb
->data
;
2239 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
2240 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2241 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
2242 dev
->name
, print_mac(mac
, resp
->da
));
2243 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2244 ieee80211_sta_tx(dev
, skb
, 0);
2247 static void ieee80211_rx_mgmt_action(struct net_device
*dev
,
2248 struct ieee80211_if_sta
*ifsta
,
2249 struct ieee80211_mgmt
*mgmt
,
2252 if (len
< IEEE80211_MIN_ACTION_SIZE
)
2255 switch (mgmt
->u
.action
.category
) {
2256 case WLAN_CATEGORY_BACK
:
2257 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
2258 case WLAN_ACTION_ADDBA_REQ
:
2259 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2260 sizeof(mgmt
->u
.action
.u
.addba_req
)))
2262 ieee80211_sta_process_addba_request(dev
, mgmt
, len
);
2264 case WLAN_ACTION_DELBA
:
2265 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2266 sizeof(mgmt
->u
.action
.u
.delba
)))
2268 ieee80211_sta_process_delba(dev
, mgmt
, len
);
2271 if (net_ratelimit())
2272 printk(KERN_DEBUG
"%s: Rx unknown A-MPDU action\n",
2282 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
2283 struct ieee80211_rx_status
*rx_status
)
2285 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2286 struct ieee80211_sub_if_data
*sdata
;
2287 struct ieee80211_if_sta
*ifsta
;
2288 struct ieee80211_mgmt
*mgmt
;
2294 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2295 ifsta
= &sdata
->u
.sta
;
2297 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2298 fc
= le16_to_cpu(mgmt
->frame_control
);
2300 switch (fc
& IEEE80211_FCTL_STYPE
) {
2301 case IEEE80211_STYPE_PROBE_REQ
:
2302 case IEEE80211_STYPE_PROBE_RESP
:
2303 case IEEE80211_STYPE_BEACON
:
2304 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
2305 case IEEE80211_STYPE_AUTH
:
2306 case IEEE80211_STYPE_ASSOC_RESP
:
2307 case IEEE80211_STYPE_REASSOC_RESP
:
2308 case IEEE80211_STYPE_DEAUTH
:
2309 case IEEE80211_STYPE_DISASSOC
:
2310 case IEEE80211_STYPE_ACTION
:
2311 skb_queue_tail(&ifsta
->skb_queue
, skb
);
2312 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2315 printk(KERN_DEBUG
"%s: received unknown management frame - "
2316 "stype=%d\n", dev
->name
,
2317 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
2326 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
2327 struct sk_buff
*skb
)
2329 struct ieee80211_rx_status
*rx_status
;
2330 struct ieee80211_sub_if_data
*sdata
;
2331 struct ieee80211_if_sta
*ifsta
;
2332 struct ieee80211_mgmt
*mgmt
;
2335 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2336 ifsta
= &sdata
->u
.sta
;
2338 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
2339 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2340 fc
= le16_to_cpu(mgmt
->frame_control
);
2342 switch (fc
& IEEE80211_FCTL_STYPE
) {
2343 case IEEE80211_STYPE_PROBE_REQ
:
2344 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
2347 case IEEE80211_STYPE_PROBE_RESP
:
2348 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
2350 case IEEE80211_STYPE_BEACON
:
2351 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
2353 case IEEE80211_STYPE_AUTH
:
2354 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
2356 case IEEE80211_STYPE_ASSOC_RESP
:
2357 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 0);
2359 case IEEE80211_STYPE_REASSOC_RESP
:
2360 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 1);
2362 case IEEE80211_STYPE_DEAUTH
:
2363 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
2365 case IEEE80211_STYPE_DISASSOC
:
2366 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
2368 case IEEE80211_STYPE_ACTION
:
2369 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
);
2377 ieee80211_txrx_result
2378 ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
2379 struct ieee80211_rx_status
*rx_status
)
2381 struct ieee80211_mgmt
*mgmt
;
2387 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2388 fc
= le16_to_cpu(mgmt
->frame_control
);
2390 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_CTL
)
2391 return TXRX_CONTINUE
;
2396 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2397 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
2398 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
2399 skb
->len
, rx_status
);
2402 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
2403 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
2409 return TXRX_CONTINUE
;
2413 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
2415 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2417 struct sta_info
*sta
;
2419 read_lock_bh(&local
->sta_lock
);
2420 list_for_each_entry(sta
, &local
->sta_list
, list
) {
2421 if (sta
->dev
== dev
&&
2422 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
2428 read_unlock_bh(&local
->sta_lock
);
2434 static void ieee80211_sta_expire(struct net_device
*dev
)
2436 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2437 struct sta_info
*sta
, *tmp
;
2438 LIST_HEAD(tmp_list
);
2439 DECLARE_MAC_BUF(mac
);
2441 write_lock_bh(&local
->sta_lock
);
2442 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
2443 if (time_after(jiffies
, sta
->last_rx
+
2444 IEEE80211_IBSS_INACTIVITY_LIMIT
)) {
2445 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
2446 dev
->name
, print_mac(mac
, sta
->addr
));
2447 __sta_info_get(sta
);
2448 sta_info_remove(sta
);
2449 list_add(&sta
->list
, &tmp_list
);
2451 write_unlock_bh(&local
->sta_lock
);
2453 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
) {
2460 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
2461 struct ieee80211_if_sta
*ifsta
)
2463 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2465 ieee80211_sta_expire(dev
);
2466 if (ieee80211_sta_active_ibss(dev
))
2469 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
2470 "IBSS networks with same SSID (merge)\n", dev
->name
);
2471 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
2475 void ieee80211_sta_timer(unsigned long data
)
2477 struct ieee80211_sub_if_data
*sdata
=
2478 (struct ieee80211_sub_if_data
*) data
;
2479 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2480 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
2482 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2483 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2487 void ieee80211_sta_work(struct work_struct
*work
)
2489 struct ieee80211_sub_if_data
*sdata
=
2490 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
2491 struct net_device
*dev
= sdata
->dev
;
2492 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2493 struct ieee80211_if_sta
*ifsta
;
2494 struct sk_buff
*skb
;
2496 if (!netif_running(dev
))
2499 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
2502 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
2503 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
) {
2504 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
2505 "(type=%d)\n", dev
->name
, sdata
->vif
.type
);
2508 ifsta
= &sdata
->u
.sta
;
2510 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
2511 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
2513 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
2514 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
2515 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
2516 if (ifsta
->scan_ssid_len
)
2517 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
2519 ieee80211_sta_start_scan(dev
, NULL
, 0);
2523 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
2524 if (ieee80211_sta_config_auth(dev
, ifsta
))
2526 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2527 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
2530 switch (ifsta
->state
) {
2531 case IEEE80211_DISABLED
:
2533 case IEEE80211_AUTHENTICATE
:
2534 ieee80211_authenticate(dev
, ifsta
);
2536 case IEEE80211_ASSOCIATE
:
2537 ieee80211_associate(dev
, ifsta
);
2539 case IEEE80211_ASSOCIATED
:
2540 ieee80211_associated(dev
, ifsta
);
2542 case IEEE80211_IBSS_SEARCH
:
2543 ieee80211_sta_find_ibss(dev
, ifsta
);
2545 case IEEE80211_IBSS_JOINED
:
2546 ieee80211_sta_merge_ibss(dev
, ifsta
);
2549 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
2554 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
2555 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
2556 "mixed-cell disabled - disassociate\n", dev
->name
);
2558 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
2559 ieee80211_set_disassoc(dev
, ifsta
, 0);
2564 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
2565 struct ieee80211_if_sta
*ifsta
)
2567 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2569 if (local
->ops
->reset_tsf
) {
2570 /* Reset own TSF to allow time synchronization work. */
2571 local
->ops
->reset_tsf(local_to_hw(local
));
2574 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
2577 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
2578 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2579 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
2580 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
2581 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
2582 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
2584 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2585 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
2587 ifsta
->auth_transaction
= -1;
2588 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
2589 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
2590 netif_carrier_off(dev
);
2594 void ieee80211_sta_req_auth(struct net_device
*dev
,
2595 struct ieee80211_if_sta
*ifsta
)
2597 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2598 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2600 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2603 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
2604 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
2605 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
2606 IEEE80211_STA_AUTO_SSID_SEL
))) {
2607 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2608 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2612 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
2613 const char *ssid
, int ssid_len
)
2615 int tmp
, hidden_ssid
;
2617 if (ssid_len
== ifsta
->ssid_len
&&
2618 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
2621 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
2627 if (ssid
[tmp
] != '\0') {
2633 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
2636 if (ssid_len
== 1 && ssid
[0] == ' ')
2642 static int ieee80211_sta_config_auth(struct net_device
*dev
,
2643 struct ieee80211_if_sta
*ifsta
)
2645 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2646 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2647 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
2648 int top_rssi
= 0, freq
;
2650 if (!(ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
2651 IEEE80211_STA_AUTO_BSSID_SEL
| IEEE80211_STA_AUTO_CHANNEL_SEL
))) {
2652 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2653 ieee80211_sta_reset_auth(dev
, ifsta
);
2657 spin_lock_bh(&local
->sta_bss_lock
);
2658 freq
= local
->oper_channel
->freq
;
2659 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2660 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
2663 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
2664 !!sdata
->default_key
)
2667 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
2671 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
2672 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
2675 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
2676 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
2679 if (!selected
|| top_rssi
< bss
->rssi
) {
2681 top_rssi
= bss
->rssi
;
2685 atomic_inc(&selected
->users
);
2686 spin_unlock_bh(&local
->sta_bss_lock
);
2689 ieee80211_set_channel(local
, -1, selected
->freq
);
2690 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
2691 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
2692 selected
->ssid_len
);
2693 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
2694 ieee80211_rx_bss_put(dev
, selected
);
2695 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2696 ieee80211_sta_reset_auth(dev
, ifsta
);
2699 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
2700 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
2701 ieee80211_sta_start_scan(dev
, NULL
, 0);
2703 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
2705 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2706 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2708 ifsta
->state
= IEEE80211_DISABLED
;
2713 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2714 struct ieee80211_if_sta
*ifsta
,
2715 struct ieee80211_sta_bss
*bss
)
2717 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2718 int res
, rates
, i
, j
;
2719 struct sk_buff
*skb
;
2720 struct ieee80211_mgmt
*mgmt
;
2721 struct ieee80211_tx_control control
;
2722 struct ieee80211_hw_mode
*mode
;
2723 struct rate_selection ratesel
;
2725 struct ieee80211_sub_if_data
*sdata
;
2727 /* Remove possible STA entries from other IBSS networks. */
2728 sta_info_flush(local
, NULL
);
2730 if (local
->ops
->reset_tsf
) {
2731 /* Reset own TSF to allow time synchronization work. */
2732 local
->ops
->reset_tsf(local_to_hw(local
));
2734 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2735 res
= ieee80211_if_config(dev
);
2739 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2741 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2742 sdata
->drop_unencrypted
= bss
->capability
&
2743 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2745 res
= ieee80211_set_channel(local
, -1, bss
->freq
);
2747 if (!(local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)) {
2748 printk(KERN_DEBUG
"%s: IBSS not allowed on channel %d "
2749 "(%d MHz)\n", dev
->name
, local
->hw
.conf
.channel
,
2750 local
->hw
.conf
.freq
);
2754 /* Set beacon template based on scan results */
2755 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2760 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2762 mgmt
= (struct ieee80211_mgmt
*)
2763 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2764 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2765 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2766 IEEE80211_STYPE_BEACON
);
2767 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2768 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2769 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2770 mgmt
->u
.beacon
.beacon_int
=
2771 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2772 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2774 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2775 *pos
++ = WLAN_EID_SSID
;
2776 *pos
++ = ifsta
->ssid_len
;
2777 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2779 rates
= bss
->supp_rates_len
;
2782 pos
= skb_put(skb
, 2 + rates
);
2783 *pos
++ = WLAN_EID_SUPP_RATES
;
2785 memcpy(pos
, bss
->supp_rates
, rates
);
2787 pos
= skb_put(skb
, 2 + 1);
2788 *pos
++ = WLAN_EID_DS_PARAMS
;
2790 *pos
++ = bss
->channel
;
2792 pos
= skb_put(skb
, 2 + 2);
2793 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2795 /* FIX: set ATIM window based on scan results */
2799 if (bss
->supp_rates_len
> 8) {
2800 rates
= bss
->supp_rates_len
- 8;
2801 pos
= skb_put(skb
, 2 + rates
);
2802 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2804 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2807 memset(&control
, 0, sizeof(control
));
2808 rate_control_get_rate(dev
, local
->oper_hw_mode
, skb
, &ratesel
);
2809 if (!ratesel
.rate
) {
2810 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2811 "for IBSS beacon\n", dev
->name
);
2814 control
.vif
= &sdata
->vif
;
2816 (sdata
->bss_conf
.use_short_preamble
&&
2817 (ratesel
.rate
->flags
& IEEE80211_RATE_PREAMBLE2
)) ?
2818 ratesel
.rate
->val2
: ratesel
.rate
->val
;
2819 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
2820 control
.power_level
= local
->hw
.conf
.power_level
;
2821 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
2822 control
.retry_limit
= 1;
2824 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
2825 if (ifsta
->probe_resp
) {
2826 mgmt
= (struct ieee80211_mgmt
*)
2827 ifsta
->probe_resp
->data
;
2828 mgmt
->frame_control
=
2829 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2830 IEEE80211_STYPE_PROBE_RESP
);
2832 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
2833 "template for IBSS\n", dev
->name
);
2836 if (local
->ops
->beacon_update
&&
2837 local
->ops
->beacon_update(local_to_hw(local
),
2838 skb
, &control
) == 0) {
2839 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
2840 "template based on scan results\n", dev
->name
);
2845 mode
= local
->oper_hw_mode
;
2846 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2847 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2848 for (j
= 0; j
< mode
->num_rates
; j
++)
2849 if (mode
->rates
[j
].rate
== bitrate
)
2852 ifsta
->supp_rates_bits
= rates
;
2856 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
2857 "template\n", dev
->name
);
2861 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2862 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2864 ieee80211_rx_bss_put(dev
, bss
);
2870 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
2871 struct ieee80211_if_sta
*ifsta
)
2873 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2874 struct ieee80211_sta_bss
*bss
;
2875 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2876 struct ieee80211_hw_mode
*mode
;
2877 u8 bssid
[ETH_ALEN
], *pos
;
2879 DECLARE_MAC_BUF(mac
);
2882 /* Easier testing, use fixed BSSID. */
2883 memset(bssid
, 0xfe, ETH_ALEN
);
2885 /* Generate random, not broadcast, locally administered BSSID. Mix in
2886 * own MAC address to make sure that devices that do not have proper
2887 * random number generator get different BSSID. */
2888 get_random_bytes(bssid
, ETH_ALEN
);
2889 for (i
= 0; i
< ETH_ALEN
; i
++)
2890 bssid
[i
] ^= dev
->dev_addr
[i
];
2895 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
2896 dev
->name
, print_mac(mac
, bssid
));
2898 bss
= ieee80211_rx_bss_add(dev
, bssid
, local
->hw
.conf
.channel
,
2899 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
2903 mode
= local
->oper_hw_mode
;
2905 if (local
->hw
.conf
.beacon_int
== 0)
2906 local
->hw
.conf
.beacon_int
= 100;
2907 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
2908 bss
->hw_mode
= local
->hw
.conf
.phymode
;
2909 bss
->freq
= local
->hw
.conf
.freq
;
2910 bss
->last_update
= jiffies
;
2911 bss
->capability
= WLAN_CAPABILITY_IBSS
;
2912 if (sdata
->default_key
) {
2913 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
2915 sdata
->drop_unencrypted
= 0;
2916 bss
->supp_rates_len
= mode
->num_rates
;
2917 pos
= bss
->supp_rates
;
2918 for (i
= 0; i
< mode
->num_rates
; i
++) {
2919 int rate
= mode
->rates
[i
].rate
;
2920 *pos
++ = (u8
) (rate
/ 5);
2923 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2927 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
2928 struct ieee80211_if_sta
*ifsta
)
2930 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2931 struct ieee80211_sta_bss
*bss
;
2935 DECLARE_MAC_BUF(mac
);
2936 DECLARE_MAC_BUF(mac2
);
2938 if (ifsta
->ssid_len
== 0)
2941 active_ibss
= ieee80211_sta_active_ibss(dev
);
2942 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2943 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
2944 dev
->name
, active_ibss
);
2945 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2946 spin_lock_bh(&local
->sta_bss_lock
);
2947 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2948 if (ifsta
->ssid_len
!= bss
->ssid_len
||
2949 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
2950 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
2952 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2953 printk(KERN_DEBUG
" bssid=%s found\n",
2954 print_mac(mac
, bss
->bssid
));
2955 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2956 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
2958 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
2961 spin_unlock_bh(&local
->sta_bss_lock
);
2963 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2964 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
2965 "%s\n", print_mac(mac
, bssid
), print_mac(mac2
, ifsta
->bssid
));
2966 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2967 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
2968 (bss
= ieee80211_rx_bss_get(dev
, bssid
, local
->hw
.conf
.channel
,
2969 ifsta
->ssid
, ifsta
->ssid_len
))) {
2970 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
2971 " based on configured SSID\n",
2972 dev
->name
, print_mac(mac
, bssid
));
2973 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2975 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2976 printk(KERN_DEBUG
" did not try to join ibss\n");
2977 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2979 /* Selected IBSS not found in current scan results - try to scan */
2980 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
2981 !ieee80211_sta_active_ibss(dev
)) {
2982 mod_timer(&ifsta
->timer
, jiffies
+
2983 IEEE80211_IBSS_MERGE_INTERVAL
);
2984 } else if (time_after(jiffies
, local
->last_scan_completed
+
2985 IEEE80211_SCAN_INTERVAL
)) {
2986 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
2987 "join\n", dev
->name
);
2988 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
2990 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
2991 int interval
= IEEE80211_SCAN_INTERVAL
;
2993 if (time_after(jiffies
, ifsta
->ibss_join_req
+
2994 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
2995 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
2996 local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)
2997 return ieee80211_sta_create_ibss(dev
, ifsta
);
2998 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
2999 printk(KERN_DEBUG
"%s: IBSS not allowed on the"
3000 " configured channel %d (%d MHz)\n",
3001 dev
->name
, local
->hw
.conf
.channel
,
3002 local
->hw
.conf
.freq
);
3005 /* No IBSS found - decrease scan interval and continue
3007 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
3010 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3011 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
3019 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
3021 struct ieee80211_sub_if_data
*sdata
;
3022 struct ieee80211_if_sta
*ifsta
;
3023 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3025 if (len
> IEEE80211_MAX_SSID_LEN
)
3028 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
3030 if (local
->ops
->conf_tx
) {
3031 struct ieee80211_tx_queue_params qparam
;
3034 memset(&qparam
, 0, sizeof(qparam
));
3035 /* TODO: are these ok defaults for all hw_modes? */
3038 local
->hw
.conf
.phymode
== MODE_IEEE80211B
? 31 : 15;
3039 qparam
.cw_max
= 1023;
3040 qparam
.burst_time
= 0;
3041 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
3043 local
->ops
->conf_tx(local_to_hw(local
),
3044 i
+ IEEE80211_TX_QUEUE_DATA0
,
3047 /* IBSS uses different parameters for Beacon sending */
3051 local
->ops
->conf_tx(local_to_hw(local
),
3052 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
3055 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3056 ifsta
= &sdata
->u
.sta
;
3058 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
3059 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
3060 memcpy(ifsta
->ssid
, ssid
, len
);
3061 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
3062 ifsta
->ssid_len
= len
;
3065 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
3067 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
3068 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3069 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
3070 ifsta
->ibss_join_req
= jiffies
;
3071 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3072 return ieee80211_sta_find_ibss(dev
, ifsta
);
3078 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
3080 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3081 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3082 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
3083 *len
= ifsta
->ssid_len
;
3088 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
3090 struct ieee80211_sub_if_data
*sdata
;
3091 struct ieee80211_if_sta
*ifsta
;
3094 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3095 ifsta
= &sdata
->u
.sta
;
3097 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3098 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
3099 res
= ieee80211_if_config(dev
);
3101 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
3102 "the low-level driver\n", dev
->name
);
3107 if (is_valid_ether_addr(bssid
))
3108 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
3110 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
3116 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
3117 struct ieee80211_sub_if_data
*sdata
,
3120 struct sk_buff
*skb
;
3121 struct ieee80211_hdr
*nullfunc
;
3124 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
3126 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
3127 "frame\n", sdata
->dev
->name
);
3130 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3132 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
3133 memset(nullfunc
, 0, 24);
3134 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
3135 IEEE80211_FCTL_TODS
;
3137 fc
|= IEEE80211_FCTL_PM
;
3138 nullfunc
->frame_control
= cpu_to_le16(fc
);
3139 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3140 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
3141 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3143 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
3147 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
3149 struct ieee80211_local
*local
= hw_to_local(hw
);
3150 struct net_device
*dev
= local
->scan_dev
;
3151 struct ieee80211_sub_if_data
*sdata
;
3152 union iwreq_data wrqu
;
3154 local
->last_scan_completed
= jiffies
;
3155 memset(&wrqu
, 0, sizeof(wrqu
));
3156 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
3158 if (local
->sta_hw_scanning
) {
3159 local
->sta_hw_scanning
= 0;
3163 local
->sta_sw_scanning
= 0;
3164 if (ieee80211_hw_config(local
))
3165 printk(KERN_DEBUG
"%s: failed to restore operational "
3166 "channel after scan\n", dev
->name
);
3169 netif_tx_lock_bh(local
->mdev
);
3170 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
3171 local
->ops
->configure_filter(local_to_hw(local
),
3172 FIF_BCN_PRBRESP_PROMISC
,
3173 &local
->filter_flags
,
3174 local
->mdev
->mc_count
,
3175 local
->mdev
->mc_list
);
3177 netif_tx_unlock_bh(local
->mdev
);
3180 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3182 /* No need to wake the master device. */
3183 if (sdata
->dev
== local
->mdev
)
3186 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
) {
3187 if (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
3188 ieee80211_send_nullfunc(local
, sdata
, 0);
3189 ieee80211_sta_timer((unsigned long)sdata
);
3192 netif_wake_queue(sdata
->dev
);
3197 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3198 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
3199 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3200 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
3201 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3202 !ieee80211_sta_active_ibss(dev
)))
3203 ieee80211_sta_find_ibss(dev
, ifsta
);
3206 EXPORT_SYMBOL(ieee80211_scan_completed
);
3208 void ieee80211_sta_scan_work(struct work_struct
*work
)
3210 struct ieee80211_local
*local
=
3211 container_of(work
, struct ieee80211_local
, scan_work
.work
);
3212 struct net_device
*dev
= local
->scan_dev
;
3213 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3214 struct ieee80211_hw_mode
*mode
;
3215 struct ieee80211_channel
*chan
;
3217 unsigned long next_delay
= 0;
3219 if (!local
->sta_sw_scanning
)
3222 switch (local
->scan_state
) {
3223 case SCAN_SET_CHANNEL
:
3224 mode
= local
->scan_hw_mode
;
3225 if (local
->scan_hw_mode
->list
.next
== &local
->modes_list
&&
3226 local
->scan_channel_idx
>= mode
->num_channels
) {
3227 ieee80211_scan_completed(local_to_hw(local
));
3230 skip
= !(local
->enabled_modes
& (1 << mode
->mode
));
3231 chan
= &mode
->channels
[local
->scan_channel_idx
];
3232 if (!(chan
->flag
& IEEE80211_CHAN_W_SCAN
) ||
3233 (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3234 !(chan
->flag
& IEEE80211_CHAN_W_IBSS
)) ||
3235 (local
->hw_modes
& local
->enabled_modes
&
3236 (1 << MODE_IEEE80211G
) && mode
->mode
== MODE_IEEE80211B
))
3241 printk(KERN_DEBUG
"%s: scan channel %d (%d MHz)\n",
3242 dev
->name
, chan
->chan
, chan
->freq
);
3245 local
->scan_channel
= chan
;
3246 if (ieee80211_hw_config(local
)) {
3247 printk(KERN_DEBUG
"%s: failed to set channel "
3248 "%d (%d MHz) for scan\n", dev
->name
,
3249 chan
->chan
, chan
->freq
);
3254 local
->scan_channel_idx
++;
3255 if (local
->scan_channel_idx
>= local
->scan_hw_mode
->num_channels
) {
3256 if (local
->scan_hw_mode
->list
.next
!= &local
->modes_list
) {
3257 local
->scan_hw_mode
= list_entry(local
->scan_hw_mode
->list
.next
,
3258 struct ieee80211_hw_mode
,
3260 local
->scan_channel_idx
= 0;
3267 next_delay
= IEEE80211_PROBE_DELAY
+
3268 usecs_to_jiffies(local
->hw
.channel_change_time
);
3269 local
->scan_state
= SCAN_SEND_PROBE
;
3271 case SCAN_SEND_PROBE
:
3272 if (local
->scan_channel
->flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
) {
3273 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
3274 local
->scan_ssid_len
);
3275 next_delay
= IEEE80211_CHANNEL_TIME
;
3277 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
3278 local
->scan_state
= SCAN_SET_CHANNEL
;
3282 if (local
->sta_sw_scanning
)
3283 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3288 static int ieee80211_sta_start_scan(struct net_device
*dev
,
3289 u8
*ssid
, size_t ssid_len
)
3291 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3292 struct ieee80211_sub_if_data
*sdata
;
3294 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
3297 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
3298 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
3301 * ScanType: ACTIVE, PASSIVE
3302 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
3303 * a Probe frame during active scanning
3305 * MinChannelTime (>= ProbeDelay), in TU
3306 * MaxChannelTime: (>= MinChannelTime), in TU
3309 /* MLME-SCAN.confirm
3311 * ResultCode: SUCCESS, INVALID_PARAMETERS
3314 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3315 if (local
->scan_dev
== dev
)
3320 if (local
->ops
->hw_scan
) {
3321 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
3324 local
->sta_hw_scanning
= 1;
3325 local
->scan_dev
= dev
;
3330 local
->sta_sw_scanning
= 1;
3333 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3335 /* Don't stop the master interface, otherwise we can't transmit
3337 if (sdata
->dev
== local
->mdev
)
3340 netif_stop_queue(sdata
->dev
);
3341 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3342 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
3343 ieee80211_send_nullfunc(local
, sdata
, 1);
3348 local
->scan_ssid_len
= ssid_len
;
3349 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
3351 local
->scan_ssid_len
= 0;
3352 local
->scan_state
= SCAN_SET_CHANNEL
;
3353 local
->scan_hw_mode
= list_entry(local
->modes_list
.next
,
3354 struct ieee80211_hw_mode
,
3356 local
->scan_channel_idx
= 0;
3357 local
->scan_dev
= dev
;
3359 netif_tx_lock_bh(local
->mdev
);
3360 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
3361 local
->ops
->configure_filter(local_to_hw(local
),
3362 FIF_BCN_PRBRESP_PROMISC
,
3363 &local
->filter_flags
,
3364 local
->mdev
->mc_count
,
3365 local
->mdev
->mc_list
);
3366 netif_tx_unlock_bh(local
->mdev
);
3368 /* TODO: start scan as soon as all nullfunc frames are ACKed */
3369 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3370 IEEE80211_CHANNEL_TIME
);
3376 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
3378 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3379 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3380 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3382 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3383 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
3385 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3386 if (local
->scan_dev
== dev
)
3391 ifsta
->scan_ssid_len
= ssid_len
;
3393 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
3394 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
3395 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3400 ieee80211_sta_scan_result(struct net_device
*dev
,
3401 struct ieee80211_sta_bss
*bss
,
3402 char *current_ev
, char *end_buf
)
3404 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3405 struct iw_event iwe
;
3407 if (time_after(jiffies
,
3408 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
3411 if (!(local
->enabled_modes
& (1 << bss
->hw_mode
)))
3414 memset(&iwe
, 0, sizeof(iwe
));
3415 iwe
.cmd
= SIOCGIWAP
;
3416 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
3417 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
3418 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3421 memset(&iwe
, 0, sizeof(iwe
));
3422 iwe
.cmd
= SIOCGIWESSID
;
3423 iwe
.u
.data
.length
= bss
->ssid_len
;
3424 iwe
.u
.data
.flags
= 1;
3425 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3428 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)) {
3429 memset(&iwe
, 0, sizeof(iwe
));
3430 iwe
.cmd
= SIOCGIWMODE
;
3431 if (bss
->capability
& WLAN_CAPABILITY_ESS
)
3432 iwe
.u
.mode
= IW_MODE_MASTER
;
3434 iwe
.u
.mode
= IW_MODE_ADHOC
;
3435 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3439 memset(&iwe
, 0, sizeof(iwe
));
3440 iwe
.cmd
= SIOCGIWFREQ
;
3441 iwe
.u
.freq
.m
= bss
->channel
;
3443 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3445 iwe
.u
.freq
.m
= bss
->freq
* 100000;
3447 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3450 memset(&iwe
, 0, sizeof(iwe
));
3452 iwe
.u
.qual
.qual
= bss
->signal
;
3453 iwe
.u
.qual
.level
= bss
->rssi
;
3454 iwe
.u
.qual
.noise
= bss
->noise
;
3455 iwe
.u
.qual
.updated
= local
->wstats_flags
;
3456 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3459 memset(&iwe
, 0, sizeof(iwe
));
3460 iwe
.cmd
= SIOCGIWENCODE
;
3461 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
3462 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
3464 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
3465 iwe
.u
.data
.length
= 0;
3466 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
3468 if (bss
&& bss
->wpa_ie
) {
3469 memset(&iwe
, 0, sizeof(iwe
));
3470 iwe
.cmd
= IWEVGENIE
;
3471 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
3472 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3476 if (bss
&& bss
->rsn_ie
) {
3477 memset(&iwe
, 0, sizeof(iwe
));
3478 iwe
.cmd
= IWEVGENIE
;
3479 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
3480 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3484 if (bss
&& bss
->supp_rates_len
> 0) {
3485 /* display all supported rates in readable format */
3486 char *p
= current_ev
+ IW_EV_LCP_LEN
;
3489 memset(&iwe
, 0, sizeof(iwe
));
3490 iwe
.cmd
= SIOCGIWRATE
;
3491 /* Those two flags are ignored... */
3492 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
3494 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
3495 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
3497 p
= iwe_stream_add_value(current_ev
, p
,
3498 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
3505 buf
= kmalloc(30, GFP_ATOMIC
);
3507 memset(&iwe
, 0, sizeof(iwe
));
3508 iwe
.cmd
= IWEVCUSTOM
;
3509 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
3510 iwe
.u
.data
.length
= strlen(buf
);
3511 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
3521 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
3523 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3524 char *current_ev
= buf
;
3525 char *end_buf
= buf
+ len
;
3526 struct ieee80211_sta_bss
*bss
;
3528 spin_lock_bh(&local
->sta_bss_lock
);
3529 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3530 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
3531 spin_unlock_bh(&local
->sta_bss_lock
);
3534 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
3537 spin_unlock_bh(&local
->sta_bss_lock
);
3538 return current_ev
- buf
;
3542 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
3544 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3545 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3546 kfree(ifsta
->extra_ie
);
3548 ifsta
->extra_ie
= NULL
;
3549 ifsta
->extra_ie_len
= 0;
3552 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
3553 if (!ifsta
->extra_ie
) {
3554 ifsta
->extra_ie_len
= 0;
3557 memcpy(ifsta
->extra_ie
, ie
, len
);
3558 ifsta
->extra_ie_len
= len
;
3563 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
3564 struct sk_buff
*skb
, u8
*bssid
,
3567 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3568 struct sta_info
*sta
;
3569 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3570 DECLARE_MAC_BUF(mac
);
3572 /* TODO: Could consider removing the least recently used entry and
3573 * allow new one to be added. */
3574 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
3575 if (net_ratelimit()) {
3576 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
3577 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
3582 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
3583 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
3585 sta
= sta_info_add(local
, dev
, addr
, GFP_ATOMIC
);
3589 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
3591 rate_control_rate_init(sta
, local
);
3593 return sta
; /* caller will call sta_info_put() */
3597 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
3599 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3600 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3602 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
3605 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
3606 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
3609 ieee80211_send_deauth(dev
, ifsta
, reason
);
3610 ieee80211_set_disassoc(dev
, ifsta
, 1);
3615 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
3617 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3618 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3620 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
3623 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3626 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
3629 ieee80211_send_disassoc(dev
, ifsta
, reason
);
3630 ieee80211_set_disassoc(dev
, ifsta
, 0);