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 <linux/rtnetlink.h>
28 #include <net/iw_handler.h>
29 #include <asm/types.h>
31 #include <net/mac80211.h>
32 #include "ieee80211_i.h"
33 #include "ieee80211_rate.h"
34 #include "ieee80211_led.h"
37 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
38 #define IEEE80211_AUTH_MAX_TRIES 3
39 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
40 #define IEEE80211_ASSOC_MAX_TRIES 3
41 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
42 #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
43 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
44 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
45 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
46 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
47 #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
49 #define IEEE80211_PROBE_DELAY (HZ / 33)
50 #define IEEE80211_CHANNEL_TIME (HZ / 33)
51 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
52 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
53 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
54 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
55 #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
57 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
60 #define ERP_INFO_USE_PROTECTION BIT(1)
62 /* mgmt header + 1 byte action code */
63 #define IEEE80211_MIN_ACTION_SIZE (24 + 1)
65 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
66 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
67 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
68 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
69 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
71 /* next values represent the buffer size for A-MPDU frame.
72 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
73 #define IEEE80211_MIN_AMPDU_BUF 0x8
74 #define IEEE80211_MAX_AMPDU_BUF 0x40
76 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
77 u8
*ssid
, size_t ssid_len
);
78 static struct ieee80211_sta_bss
*
79 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
80 u8
*ssid
, u8 ssid_len
);
81 static void ieee80211_rx_bss_put(struct net_device
*dev
,
82 struct ieee80211_sta_bss
*bss
);
83 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
84 struct ieee80211_if_sta
*ifsta
);
85 static int ieee80211_sta_wep_configured(struct net_device
*dev
);
86 static int ieee80211_sta_start_scan(struct net_device
*dev
,
87 u8
*ssid
, size_t ssid_len
);
88 static int ieee80211_sta_config_auth(struct net_device
*dev
,
89 struct ieee80211_if_sta
*ifsta
);
92 void ieee802_11_parse_elems(u8
*start
, size_t len
,
93 struct ieee802_11_elems
*elems
)
98 memset(elems
, 0, sizeof(*elems
));
113 elems
->ssid_len
= elen
;
115 case WLAN_EID_SUPP_RATES
:
116 elems
->supp_rates
= pos
;
117 elems
->supp_rates_len
= elen
;
119 case WLAN_EID_FH_PARAMS
:
120 elems
->fh_params
= pos
;
121 elems
->fh_params_len
= elen
;
123 case WLAN_EID_DS_PARAMS
:
124 elems
->ds_params
= pos
;
125 elems
->ds_params_len
= elen
;
127 case WLAN_EID_CF_PARAMS
:
128 elems
->cf_params
= pos
;
129 elems
->cf_params_len
= elen
;
133 elems
->tim_len
= elen
;
135 case WLAN_EID_IBSS_PARAMS
:
136 elems
->ibss_params
= pos
;
137 elems
->ibss_params_len
= elen
;
139 case WLAN_EID_CHALLENGE
:
140 elems
->challenge
= pos
;
141 elems
->challenge_len
= elen
;
144 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
146 /* Microsoft OUI (00:50:F2) */
148 /* OUI Type 1 - WPA IE */
150 elems
->wpa_len
= elen
;
151 } else if (elen
>= 5 && pos
[3] == 2) {
153 elems
->wmm_info
= pos
;
154 elems
->wmm_info_len
= elen
;
155 } else if (pos
[4] == 1) {
156 elems
->wmm_param
= pos
;
157 elems
->wmm_param_len
= elen
;
164 elems
->rsn_len
= elen
;
166 case WLAN_EID_ERP_INFO
:
167 elems
->erp_info
= pos
;
168 elems
->erp_info_len
= elen
;
170 case WLAN_EID_EXT_SUPP_RATES
:
171 elems
->ext_supp_rates
= pos
;
172 elems
->ext_supp_rates_len
= elen
;
174 case WLAN_EID_HT_CAPABILITY
:
175 elems
->ht_cap_elem
= pos
;
176 elems
->ht_cap_elem_len
= elen
;
178 case WLAN_EID_HT_EXTRA_INFO
:
179 elems
->ht_info_elem
= pos
;
180 elems
->ht_info_elem_len
= elen
;
182 case WLAN_EID_MESH_ID
:
183 elems
->mesh_id
= pos
;
184 elems
->mesh_id_len
= elen
;
186 case WLAN_EID_MESH_CONFIG
:
187 elems
->mesh_config
= pos
;
188 elems
->mesh_config_len
= elen
;
190 case WLAN_EID_PEER_LINK
:
191 elems
->peer_link
= pos
;
192 elems
->peer_link_len
= elen
;
196 elems
->preq_len
= elen
;
200 elems
->prep_len
= elen
;
204 elems
->perr_len
= elen
;
216 static int ecw2cw(int ecw
)
218 return (1 << ecw
) - 1;
222 static void ieee80211_sta_def_wmm_params(struct net_device
*dev
,
223 struct ieee80211_sta_bss
*bss
,
226 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
227 struct ieee80211_local
*local
= sdata
->local
;
228 int i
, have_higher_than_11mbit
= 0;
231 /* cf. IEEE 802.11 9.2.12 */
232 for (i
= 0; i
< bss
->supp_rates_len
; i
++)
233 if ((bss
->supp_rates
[i
] & 0x7f) * 5 > 110)
234 have_higher_than_11mbit
= 1;
236 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
237 have_higher_than_11mbit
)
238 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
240 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
243 if (local
->ops
->conf_tx
) {
244 struct ieee80211_tx_queue_params qparam
;
246 memset(&qparam
, 0, sizeof(qparam
));
250 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
251 !(sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
))
256 qparam
.cw_max
= 1023;
259 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
260 local
->ops
->conf_tx(local_to_hw(local
),
261 i
+ IEEE80211_TX_QUEUE_DATA0
,
265 /* IBSS uses different parameters for Beacon sending */
269 local
->ops
->conf_tx(local_to_hw(local
),
270 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
275 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
276 struct ieee80211_if_sta
*ifsta
,
277 u8
*wmm_param
, size_t wmm_param_len
)
279 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
280 struct ieee80211_tx_queue_params params
;
285 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
287 count
= wmm_param
[6] & 0x0f;
288 if (count
== ifsta
->wmm_last_param_set
)
290 ifsta
->wmm_last_param_set
= count
;
293 left
= wmm_param_len
- 8;
295 memset(¶ms
, 0, sizeof(params
));
297 if (!local
->ops
->conf_tx
)
301 for (; left
>= 4; left
-= 4, pos
+= 4) {
302 int aci
= (pos
[0] >> 5) & 0x03;
303 int acm
= (pos
[0] >> 4) & 0x01;
308 queue
= IEEE80211_TX_QUEUE_DATA3
;
310 local
->wmm_acm
|= BIT(0) | BIT(3);
314 queue
= IEEE80211_TX_QUEUE_DATA1
;
316 local
->wmm_acm
|= BIT(4) | BIT(5);
320 queue
= IEEE80211_TX_QUEUE_DATA0
;
322 local
->wmm_acm
|= BIT(6) | BIT(7);
327 queue
= IEEE80211_TX_QUEUE_DATA2
;
329 local
->wmm_acm
|= BIT(1) | BIT(2);
334 params
.aifs
= pos
[0] & 0x0f;
335 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
336 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
337 params
.txop
= pos
[2] | (pos
[3] << 8);
338 #ifdef CONFIG_MAC80211_DEBUG
339 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
340 "cWmin=%d cWmax=%d txop=%d\n",
341 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
342 params
.cw_max
, params
.txop
);
344 /* TODO: handle ACM (block TX, fallback to next lowest allowed
346 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
347 printk(KERN_DEBUG
"%s: failed to set TX queue "
348 "parameters for queue %d\n", dev
->name
, queue
);
354 static u32
ieee80211_handle_erp_ie(struct ieee80211_sub_if_data
*sdata
,
357 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
358 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
359 bool use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
360 bool use_short_preamble
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) == 0;
361 DECLARE_MAC_BUF(mac
);
364 if (use_protection
!= bss_conf
->use_cts_prot
) {
365 if (net_ratelimit()) {
366 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
369 use_protection
? "enabled" : "disabled",
370 print_mac(mac
, ifsta
->bssid
));
372 bss_conf
->use_cts_prot
= use_protection
;
373 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
376 if (use_short_preamble
!= bss_conf
->use_short_preamble
) {
377 if (net_ratelimit()) {
378 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
381 use_short_preamble
? "short" : "long",
382 print_mac(mac
, ifsta
->bssid
));
384 bss_conf
->use_short_preamble
= use_short_preamble
;
385 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
391 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap
*ht_cap_ie
,
392 struct ieee80211_ht_info
*ht_info
)
398 memset(ht_info
, 0, sizeof(*ht_info
));
401 u8 ampdu_info
= ht_cap_ie
->ampdu_params_info
;
403 ht_info
->ht_supported
= 1;
404 ht_info
->cap
= le16_to_cpu(ht_cap_ie
->cap_info
);
405 ht_info
->ampdu_factor
=
406 ampdu_info
& IEEE80211_HT_CAP_AMPDU_FACTOR
;
407 ht_info
->ampdu_density
=
408 (ampdu_info
& IEEE80211_HT_CAP_AMPDU_DENSITY
) >> 2;
409 memcpy(ht_info
->supp_mcs_set
, ht_cap_ie
->supp_mcs_set
, 16);
411 ht_info
->ht_supported
= 0;
416 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
417 struct ieee80211_ht_addt_info
*ht_add_info_ie
,
418 struct ieee80211_ht_bss_info
*bss_info
)
420 if (bss_info
== NULL
)
423 memset(bss_info
, 0, sizeof(*bss_info
));
425 if (ht_add_info_ie
) {
427 op_mode
= le16_to_cpu(ht_add_info_ie
->operation_mode
);
429 bss_info
->primary_channel
= ht_add_info_ie
->control_chan
;
430 bss_info
->bss_cap
= ht_add_info_ie
->ht_param
;
431 bss_info
->bss_op_mode
= (u8
)(op_mode
& 0xff);
437 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
438 struct ieee80211_if_sta
*ifsta
)
443 union iwreq_data wrqu
;
445 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
448 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
449 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
453 len
= sprintf(buf
, "ASSOCINFO(");
454 if (ifsta
->assocreq_ies
) {
455 len
+= sprintf(buf
+ len
, "ReqIEs=");
456 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
457 len
+= sprintf(buf
+ len
, "%02x",
458 ifsta
->assocreq_ies
[i
]);
461 if (ifsta
->assocresp_ies
) {
462 if (ifsta
->assocreq_ies
)
463 len
+= sprintf(buf
+ len
, " ");
464 len
+= sprintf(buf
+ len
, "RespIEs=");
465 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
466 len
+= sprintf(buf
+ len
, "%02x",
467 ifsta
->assocresp_ies
[i
]);
470 len
+= sprintf(buf
+ len
, ")");
472 if (len
> IW_CUSTOM_MAX
) {
473 len
= sprintf(buf
, "ASSOCRESPIE=");
474 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
475 len
+= sprintf(buf
+ len
, "%02x",
476 ifsta
->assocresp_ies
[i
]);
480 memset(&wrqu
, 0, sizeof(wrqu
));
481 wrqu
.data
.length
= len
;
482 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
488 static void ieee80211_set_associated(struct net_device
*dev
,
489 struct ieee80211_if_sta
*ifsta
,
492 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
493 struct ieee80211_local
*local
= sdata
->local
;
494 struct ieee80211_conf
*conf
= &local_to_hw(local
)->conf
;
495 union iwreq_data wrqu
;
496 u32 changed
= BSS_CHANGED_ASSOC
;
499 struct ieee80211_sta_bss
*bss
;
501 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
503 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
506 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
507 conf
->channel
->center_freq
,
508 ifsta
->ssid
, ifsta
->ssid_len
);
510 /* set timing information */
511 sdata
->bss_conf
.beacon_int
= bss
->beacon_int
;
512 sdata
->bss_conf
.timestamp
= bss
->timestamp
;
514 if (bss
->has_erp_value
)
515 changed
|= ieee80211_handle_erp_ie(
516 sdata
, bss
->erp_value
);
518 ieee80211_rx_bss_put(dev
, bss
);
521 if (conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
522 changed
|= BSS_CHANGED_HT
;
523 sdata
->bss_conf
.assoc_ht
= 1;
524 sdata
->bss_conf
.ht_conf
= &conf
->ht_conf
;
525 sdata
->bss_conf
.ht_bss_conf
= &conf
->ht_bss_conf
;
528 netif_carrier_on(dev
);
529 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
530 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
531 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
532 ieee80211_sta_send_associnfo(dev
, ifsta
);
534 ieee80211_sta_tear_down_BA_sessions(dev
, ifsta
->bssid
);
535 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
536 netif_carrier_off(dev
);
537 ieee80211_reset_erp_info(dev
);
539 sdata
->bss_conf
.assoc_ht
= 0;
540 sdata
->bss_conf
.ht_conf
= NULL
;
541 sdata
->bss_conf
.ht_bss_conf
= NULL
;
543 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
545 ifsta
->last_probe
= jiffies
;
546 ieee80211_led_assoc(local
, assoc
);
548 sdata
->bss_conf
.assoc
= assoc
;
549 ieee80211_bss_info_change_notify(sdata
, changed
);
550 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
551 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
554 static void ieee80211_set_disassoc(struct net_device
*dev
,
555 struct ieee80211_if_sta
*ifsta
, int deauth
)
558 ifsta
->auth_tries
= 0;
559 ifsta
->assoc_tries
= 0;
560 ieee80211_set_associated(dev
, ifsta
, 0);
563 void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
566 struct ieee80211_sub_if_data
*sdata
;
567 struct ieee80211_tx_packet_data
*pkt_data
;
569 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
570 skb
->dev
= sdata
->local
->mdev
;
571 skb_set_mac_header(skb
, 0);
572 skb_set_network_header(skb
, 0);
573 skb_set_transport_header(skb
, 0);
575 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
576 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
577 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
579 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
585 static void ieee80211_send_auth(struct net_device
*dev
,
586 struct ieee80211_if_sta
*ifsta
,
587 int transaction
, u8
*extra
, size_t extra_len
,
590 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
592 struct ieee80211_mgmt
*mgmt
;
594 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
595 sizeof(*mgmt
) + 6 + extra_len
);
597 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
598 "frame\n", dev
->name
);
601 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
603 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
604 memset(mgmt
, 0, 24 + 6);
605 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
606 IEEE80211_STYPE_AUTH
);
608 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
609 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
610 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
611 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
612 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
613 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
614 ifsta
->auth_transaction
= transaction
+ 1;
615 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
617 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
619 ieee80211_sta_tx(dev
, skb
, encrypt
);
623 static void ieee80211_authenticate(struct net_device
*dev
,
624 struct ieee80211_if_sta
*ifsta
)
626 DECLARE_MAC_BUF(mac
);
629 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
630 printk(KERN_DEBUG
"%s: authentication with AP %s"
632 dev
->name
, print_mac(mac
, ifsta
->bssid
));
633 ifsta
->state
= IEEE80211_DISABLED
;
637 ifsta
->state
= IEEE80211_AUTHENTICATE
;
638 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
639 dev
->name
, print_mac(mac
, ifsta
->bssid
));
641 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
643 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
647 static void ieee80211_send_assoc(struct net_device
*dev
,
648 struct ieee80211_if_sta
*ifsta
)
650 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
652 struct ieee80211_mgmt
*mgmt
;
656 struct ieee80211_sta_bss
*bss
;
658 struct ieee80211_supported_band
*sband
;
660 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
661 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
664 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
665 "frame\n", dev
->name
);
668 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
670 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
672 capab
= ifsta
->capab
;
674 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
) {
675 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
))
676 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
677 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
))
678 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
681 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
682 local
->hw
.conf
.channel
->center_freq
,
683 ifsta
->ssid
, ifsta
->ssid_len
);
685 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
686 capab
|= WLAN_CAPABILITY_PRIVACY
;
690 ieee80211_rx_bss_put(dev
, bss
);
693 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
695 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
696 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
697 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
699 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
701 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
702 IEEE80211_STYPE_REASSOC_REQ
);
703 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
704 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
705 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
709 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
710 IEEE80211_STYPE_ASSOC_REQ
);
711 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
712 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
716 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
717 *pos
++ = WLAN_EID_SSID
;
718 *pos
++ = ifsta
->ssid_len
;
719 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
721 len
= sband
->n_bitrates
;
724 pos
= skb_put(skb
, len
+ 2);
725 *pos
++ = WLAN_EID_SUPP_RATES
;
727 for (i
= 0; i
< len
; i
++) {
728 int rate
= sband
->bitrates
[i
].bitrate
;
729 *pos
++ = (u8
) (rate
/ 5);
732 if (sband
->n_bitrates
> len
) {
733 pos
= skb_put(skb
, sband
->n_bitrates
- len
+ 2);
734 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
735 *pos
++ = sband
->n_bitrates
- len
;
736 for (i
= len
; i
< sband
->n_bitrates
; i
++) {
737 int rate
= sband
->bitrates
[i
].bitrate
;
738 *pos
++ = (u8
) (rate
/ 5);
742 if (ifsta
->extra_ie
) {
743 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
744 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
747 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
748 pos
= skb_put(skb
, 9);
749 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
750 *pos
++ = 7; /* len */
751 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
754 *pos
++ = 2; /* WME */
755 *pos
++ = 0; /* WME info */
756 *pos
++ = 1; /* WME ver */
759 /* wmm support is a must to HT */
760 if (wmm
&& sband
->ht_info
.ht_supported
) {
761 __le16 tmp
= cpu_to_le16(sband
->ht_info
.cap
);
762 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
)+2);
763 *pos
++ = WLAN_EID_HT_CAPABILITY
;
764 *pos
++ = sizeof(struct ieee80211_ht_cap
);
765 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
766 memcpy(pos
, &tmp
, sizeof(u16
));
768 /* TODO: needs a define here for << 2 */
769 *pos
++ = sband
->ht_info
.ampdu_factor
|
770 (sband
->ht_info
.ampdu_density
<< 2);
771 memcpy(pos
, sband
->ht_info
.supp_mcs_set
, 16);
774 kfree(ifsta
->assocreq_ies
);
775 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
776 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
777 if (ifsta
->assocreq_ies
)
778 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
780 ieee80211_sta_tx(dev
, skb
, 0);
784 static void ieee80211_send_deauth(struct net_device
*dev
,
785 struct ieee80211_if_sta
*ifsta
, u16 reason
)
787 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
789 struct ieee80211_mgmt
*mgmt
;
791 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
793 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
794 "frame\n", dev
->name
);
797 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
799 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
801 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
802 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
803 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
804 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
805 IEEE80211_STYPE_DEAUTH
);
807 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
809 ieee80211_sta_tx(dev
, skb
, 0);
813 static void ieee80211_send_disassoc(struct net_device
*dev
,
814 struct ieee80211_if_sta
*ifsta
, u16 reason
)
816 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
818 struct ieee80211_mgmt
*mgmt
;
820 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
822 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
823 "frame\n", dev
->name
);
826 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
828 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
830 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
831 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
832 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
833 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
834 IEEE80211_STYPE_DISASSOC
);
836 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
838 ieee80211_sta_tx(dev
, skb
, 0);
842 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
843 struct ieee80211_if_sta
*ifsta
)
845 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
846 struct ieee80211_sta_bss
*bss
;
851 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
854 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
855 local
->hw
.conf
.channel
->center_freq
,
856 ifsta
->ssid
, ifsta
->ssid_len
);
860 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
861 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
862 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
864 ieee80211_rx_bss_put(dev
, bss
);
866 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
873 static void ieee80211_associate(struct net_device
*dev
,
874 struct ieee80211_if_sta
*ifsta
)
876 DECLARE_MAC_BUF(mac
);
878 ifsta
->assoc_tries
++;
879 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
880 printk(KERN_DEBUG
"%s: association with AP %s"
882 dev
->name
, print_mac(mac
, ifsta
->bssid
));
883 ifsta
->state
= IEEE80211_DISABLED
;
887 ifsta
->state
= IEEE80211_ASSOCIATE
;
888 printk(KERN_DEBUG
"%s: associate with AP %s\n",
889 dev
->name
, print_mac(mac
, ifsta
->bssid
));
890 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
891 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
892 "mixed-cell disabled - abort association\n", dev
->name
);
893 ifsta
->state
= IEEE80211_DISABLED
;
897 ieee80211_send_assoc(dev
, ifsta
);
899 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
903 static void ieee80211_associated(struct net_device
*dev
,
904 struct ieee80211_if_sta
*ifsta
)
906 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
907 struct sta_info
*sta
;
909 DECLARE_MAC_BUF(mac
);
911 /* TODO: start monitoring current AP signal quality and number of
912 * missed beacons. Scan other channels every now and then and search
914 /* TODO: remove expired BSSes */
916 ifsta
->state
= IEEE80211_ASSOCIATED
;
920 sta
= sta_info_get(local
, ifsta
->bssid
);
922 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
923 dev
->name
, print_mac(mac
, ifsta
->bssid
));
927 if (time_after(jiffies
,
928 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
929 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
930 printk(KERN_DEBUG
"%s: No ProbeResp from "
931 "current AP %s - assume out of "
933 dev
->name
, print_mac(mac
, ifsta
->bssid
));
935 sta_info_unlink(&sta
);
937 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
939 local
->scan_ssid_len
);
940 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
942 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
943 if (time_after(jiffies
, ifsta
->last_probe
+
944 IEEE80211_PROBE_INTERVAL
)) {
945 ifsta
->last_probe
= jiffies
;
946 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
955 if (disassoc
&& sta
) {
957 sta_info_destroy(sta
);
962 ifsta
->state
= IEEE80211_DISABLED
;
963 ieee80211_set_associated(dev
, ifsta
, 0);
965 mod_timer(&ifsta
->timer
, jiffies
+
966 IEEE80211_MONITORING_INTERVAL
);
971 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
972 u8
*ssid
, size_t ssid_len
)
974 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
975 struct ieee80211_supported_band
*sband
;
977 struct ieee80211_mgmt
*mgmt
;
978 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
981 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
983 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
984 "request\n", dev
->name
);
987 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
989 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
991 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
992 IEEE80211_STYPE_PROBE_REQ
);
993 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
995 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
996 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
998 memset(mgmt
->da
, 0xff, ETH_ALEN
);
999 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
1001 pos
= skb_put(skb
, 2 + ssid_len
);
1002 *pos
++ = WLAN_EID_SSID
;
1004 memcpy(pos
, ssid
, ssid_len
);
1006 supp_rates
= skb_put(skb
, 2);
1007 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
1009 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
1011 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
1012 struct ieee80211_rate
*rate
= &sband
->bitrates
[i
];
1014 pos
= skb_put(skb
, 1);
1016 } else if (supp_rates
[1] == 8) {
1017 esupp_rates
= skb_put(skb
, 3);
1018 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
1020 pos
= &esupp_rates
[2];
1022 pos
= skb_put(skb
, 1);
1025 *pos
= rate
->bitrate
/ 5;
1028 ieee80211_sta_tx(dev
, skb
, 0);
1032 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
1034 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1035 if (!sdata
|| !sdata
->default_key
||
1036 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
1042 static void ieee80211_auth_completed(struct net_device
*dev
,
1043 struct ieee80211_if_sta
*ifsta
)
1045 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
1046 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
1047 ieee80211_associate(dev
, ifsta
);
1051 static void ieee80211_auth_challenge(struct net_device
*dev
,
1052 struct ieee80211_if_sta
*ifsta
,
1053 struct ieee80211_mgmt
*mgmt
,
1057 struct ieee802_11_elems elems
;
1059 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
1060 pos
= mgmt
->u
.auth
.variable
;
1061 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1062 if (!elems
.challenge
) {
1063 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
1064 "frame\n", dev
->name
);
1067 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
1068 elems
.challenge_len
+ 2, 1);
1071 static void ieee80211_send_addba_resp(struct net_device
*dev
, u8
*da
, u16 tid
,
1072 u8 dialog_token
, u16 status
, u16 policy
,
1073 u16 buf_size
, u16 timeout
)
1075 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1076 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1077 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1078 struct sk_buff
*skb
;
1079 struct ieee80211_mgmt
*mgmt
;
1082 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1083 sizeof(mgmt
->u
.action
.u
.addba_resp
));
1085 printk(KERN_DEBUG
"%s: failed to allocate buffer "
1086 "for addba resp frame\n", dev
->name
);
1090 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1091 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1092 memset(mgmt
, 0, 24);
1093 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1094 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1095 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1096 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1098 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1099 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1100 IEEE80211_STYPE_ACTION
);
1102 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
1103 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1104 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
1105 mgmt
->u
.action
.u
.addba_resp
.dialog_token
= dialog_token
;
1107 capab
= (u16
)(policy
<< 1); /* bit 1 aggregation policy */
1108 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1109 capab
|= (u16
)(buf_size
<< 6); /* bit 15:6 max size of aggregation */
1111 mgmt
->u
.action
.u
.addba_resp
.capab
= cpu_to_le16(capab
);
1112 mgmt
->u
.action
.u
.addba_resp
.timeout
= cpu_to_le16(timeout
);
1113 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
1115 ieee80211_sta_tx(dev
, skb
, 0);
1120 void ieee80211_send_addba_request(struct net_device
*dev
, const u8
*da
,
1121 u16 tid
, u8 dialog_token
, u16 start_seq_num
,
1122 u16 agg_size
, u16 timeout
)
1124 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1125 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1126 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1127 struct sk_buff
*skb
;
1128 struct ieee80211_mgmt
*mgmt
;
1131 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1132 sizeof(mgmt
->u
.action
.u
.addba_req
));
1136 printk(KERN_ERR
"%s: failed to allocate buffer "
1137 "for addba request frame\n", dev
->name
);
1140 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1141 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1142 memset(mgmt
, 0, 24);
1143 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1144 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1145 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1146 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1148 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1150 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1151 IEEE80211_STYPE_ACTION
);
1153 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_req
));
1155 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1156 mgmt
->u
.action
.u
.addba_req
.action_code
= WLAN_ACTION_ADDBA_REQ
;
1158 mgmt
->u
.action
.u
.addba_req
.dialog_token
= dialog_token
;
1159 capab
= (u16
)(1 << 1); /* bit 1 aggregation policy */
1160 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1161 capab
|= (u16
)(agg_size
<< 6); /* bit 15:6 max size of aggergation */
1163 mgmt
->u
.action
.u
.addba_req
.capab
= cpu_to_le16(capab
);
1165 mgmt
->u
.action
.u
.addba_req
.timeout
= cpu_to_le16(timeout
);
1166 mgmt
->u
.action
.u
.addba_req
.start_seq_num
=
1167 cpu_to_le16(start_seq_num
<< 4);
1169 ieee80211_sta_tx(dev
, skb
, 0);
1172 static void ieee80211_sta_process_addba_request(struct net_device
*dev
,
1173 struct ieee80211_mgmt
*mgmt
,
1176 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1177 struct ieee80211_hw
*hw
= &local
->hw
;
1178 struct ieee80211_conf
*conf
= &hw
->conf
;
1179 struct sta_info
*sta
;
1180 struct tid_ampdu_rx
*tid_agg_rx
;
1181 u16 capab
, tid
, timeout
, ba_policy
, buf_size
, start_seq_num
, status
;
1183 int ret
= -EOPNOTSUPP
;
1184 DECLARE_MAC_BUF(mac
);
1188 sta
= sta_info_get(local
, mgmt
->sa
);
1194 /* extract session parameters from addba request frame */
1195 dialog_token
= mgmt
->u
.action
.u
.addba_req
.dialog_token
;
1196 timeout
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.timeout
);
1198 le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.start_seq_num
) >> 4;
1200 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.capab
);
1201 ba_policy
= (capab
& IEEE80211_ADDBA_PARAM_POLICY_MASK
) >> 1;
1202 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1203 buf_size
= (capab
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
) >> 6;
1205 status
= WLAN_STATUS_REQUEST_DECLINED
;
1207 /* sanity check for incoming parameters:
1208 * check if configuration can support the BA policy
1209 * and if buffer size does not exceeds max value */
1210 if (((ba_policy
!= 1)
1211 && (!(conf
->ht_conf
.cap
& IEEE80211_HT_CAP_DELAY_BA
)))
1212 || (buf_size
> IEEE80211_MAX_AMPDU_BUF
)) {
1213 status
= WLAN_STATUS_INVALID_QOS_PARAM
;
1214 #ifdef CONFIG_MAC80211_HT_DEBUG
1215 if (net_ratelimit())
1216 printk(KERN_DEBUG
"AddBA Req with bad params from "
1217 "%s on tid %u. policy %d, buffer size %d\n",
1218 print_mac(mac
, mgmt
->sa
), tid
, ba_policy
,
1220 #endif /* CONFIG_MAC80211_HT_DEBUG */
1223 /* determine default buffer size */
1224 if (buf_size
== 0) {
1225 struct ieee80211_supported_band
*sband
;
1227 sband
= local
->hw
.wiphy
->bands
[conf
->channel
->band
];
1228 buf_size
= IEEE80211_MIN_AMPDU_BUF
;
1229 buf_size
= buf_size
<< sband
->ht_info
.ampdu_factor
;
1233 /* examine state machine */
1234 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1236 if (sta
->ampdu_mlme
.tid_state_rx
[tid
] != HT_AGG_STATE_IDLE
) {
1237 #ifdef CONFIG_MAC80211_HT_DEBUG
1238 if (net_ratelimit())
1239 printk(KERN_DEBUG
"unexpected AddBA Req from "
1241 print_mac(mac
, mgmt
->sa
), tid
);
1242 #endif /* CONFIG_MAC80211_HT_DEBUG */
1246 /* prepare A-MPDU MLME for Rx aggregation */
1247 sta
->ampdu_mlme
.tid_rx
[tid
] =
1248 kmalloc(sizeof(struct tid_ampdu_rx
), GFP_ATOMIC
);
1249 if (!sta
->ampdu_mlme
.tid_rx
[tid
]) {
1250 if (net_ratelimit())
1251 printk(KERN_ERR
"allocate rx mlme to tid %d failed\n",
1256 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.function
=
1257 sta_rx_agg_session_timer_expired
;
1258 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.data
=
1259 (unsigned long)&sta
->timer_to_tid
[tid
];
1260 init_timer(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1262 tid_agg_rx
= sta
->ampdu_mlme
.tid_rx
[tid
];
1264 /* prepare reordering buffer */
1265 tid_agg_rx
->reorder_buf
=
1266 kmalloc(buf_size
* sizeof(struct sk_buf
*), GFP_ATOMIC
);
1267 if (!tid_agg_rx
->reorder_buf
) {
1268 if (net_ratelimit())
1269 printk(KERN_ERR
"can not allocate reordering buffer "
1270 "to tid %d\n", tid
);
1271 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1274 memset(tid_agg_rx
->reorder_buf
, 0,
1275 buf_size
* sizeof(struct sk_buf
*));
1277 if (local
->ops
->ampdu_action
)
1278 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_START
,
1279 sta
->addr
, tid
, &start_seq_num
);
1280 #ifdef CONFIG_MAC80211_HT_DEBUG
1281 printk(KERN_DEBUG
"Rx A-MPDU on tid %d result %d", tid
, ret
);
1282 #endif /* CONFIG_MAC80211_HT_DEBUG */
1285 kfree(tid_agg_rx
->reorder_buf
);
1287 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1291 /* change state and send addba resp */
1292 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_OPERATIONAL
;
1293 tid_agg_rx
->dialog_token
= dialog_token
;
1294 tid_agg_rx
->ssn
= start_seq_num
;
1295 tid_agg_rx
->head_seq_num
= start_seq_num
;
1296 tid_agg_rx
->buf_size
= buf_size
;
1297 tid_agg_rx
->timeout
= timeout
;
1298 tid_agg_rx
->stored_mpdu_num
= 0;
1299 status
= WLAN_STATUS_SUCCESS
;
1301 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1304 ieee80211_send_addba_resp(sta
->sdata
->dev
, sta
->addr
, tid
,
1305 dialog_token
, status
, 1, buf_size
, timeout
);
1309 static void ieee80211_sta_process_addba_resp(struct net_device
*dev
,
1310 struct ieee80211_mgmt
*mgmt
,
1313 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1314 struct ieee80211_hw
*hw
= &local
->hw
;
1315 struct sta_info
*sta
;
1322 sta
= sta_info_get(local
, mgmt
->sa
);
1328 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.capab
);
1329 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1331 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1333 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1335 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1336 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1337 printk(KERN_DEBUG
"state not HT_ADDBA_REQUESTED_MSK:"
1339 goto addba_resp_exit
;
1342 if (mgmt
->u
.action
.u
.addba_resp
.dialog_token
!=
1343 sta
->ampdu_mlme
.tid_tx
[tid
]->dialog_token
) {
1344 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1345 #ifdef CONFIG_MAC80211_HT_DEBUG
1346 printk(KERN_DEBUG
"wrong addBA response token, tid %d\n", tid
);
1347 #endif /* CONFIG_MAC80211_HT_DEBUG */
1348 goto addba_resp_exit
;
1351 del_timer_sync(&sta
->ampdu_mlme
.tid_tx
[tid
]->addba_resp_timer
);
1352 #ifdef CONFIG_MAC80211_HT_DEBUG
1353 printk(KERN_DEBUG
"switched off addBA timer for tid %d \n", tid
);
1354 #endif /* CONFIG_MAC80211_HT_DEBUG */
1355 if (le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.status
)
1356 == WLAN_STATUS_SUCCESS
) {
1357 if (*state
& HT_ADDBA_RECEIVED_MSK
)
1358 printk(KERN_DEBUG
"double addBA response\n");
1360 *state
|= HT_ADDBA_RECEIVED_MSK
;
1361 sta
->ampdu_mlme
.addba_req_num
[tid
] = 0;
1363 if (*state
== HT_AGG_STATE_OPERATIONAL
) {
1364 printk(KERN_DEBUG
"Aggregation on for tid %d \n", tid
);
1365 ieee80211_wake_queue(hw
, sta
->tid_to_tx_q
[tid
]);
1368 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1369 printk(KERN_DEBUG
"recipient accepted agg: tid %d \n", tid
);
1371 printk(KERN_DEBUG
"recipient rejected agg: tid %d \n", tid
);
1373 sta
->ampdu_mlme
.addba_req_num
[tid
]++;
1374 /* this will allow the state check in stop_BA_session */
1375 *state
= HT_AGG_STATE_OPERATIONAL
;
1376 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1377 ieee80211_stop_tx_ba_session(hw
, sta
->addr
, tid
,
1378 WLAN_BACK_INITIATOR
);
1385 void ieee80211_send_delba(struct net_device
*dev
, const u8
*da
, u16 tid
,
1386 u16 initiator
, u16 reason_code
)
1388 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1389 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1390 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1391 struct sk_buff
*skb
;
1392 struct ieee80211_mgmt
*mgmt
;
1395 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1396 sizeof(mgmt
->u
.action
.u
.delba
));
1399 printk(KERN_ERR
"%s: failed to allocate buffer "
1400 "for delba frame\n", dev
->name
);
1404 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1405 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1406 memset(mgmt
, 0, 24);
1407 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1408 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1409 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1410 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1412 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1413 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1414 IEEE80211_STYPE_ACTION
);
1416 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.delba
));
1418 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1419 mgmt
->u
.action
.u
.delba
.action_code
= WLAN_ACTION_DELBA
;
1420 params
= (u16
)(initiator
<< 11); /* bit 11 initiator */
1421 params
|= (u16
)(tid
<< 12); /* bit 15:12 TID number */
1423 mgmt
->u
.action
.u
.delba
.params
= cpu_to_le16(params
);
1424 mgmt
->u
.action
.u
.delba
.reason_code
= cpu_to_le16(reason_code
);
1426 ieee80211_sta_tx(dev
, skb
, 0);
1429 void ieee80211_sta_stop_rx_ba_session(struct net_device
*dev
, u8
*ra
, u16 tid
,
1430 u16 initiator
, u16 reason
)
1432 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1433 struct ieee80211_hw
*hw
= &local
->hw
;
1434 struct sta_info
*sta
;
1439 sta
= sta_info_get(local
, ra
);
1445 /* check if TID is in operational state */
1446 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1447 if (sta
->ampdu_mlme
.tid_state_rx
[tid
]
1448 != HT_AGG_STATE_OPERATIONAL
) {
1449 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1453 sta
->ampdu_mlme
.tid_state_rx
[tid
] =
1454 HT_AGG_STATE_REQ_STOP_BA_MSK
|
1455 (initiator
<< HT_AGG_STATE_INITIATOR_SHIFT
);
1456 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1458 /* stop HW Rx aggregation. ampdu_action existence
1459 * already verified in session init so we add the BUG_ON */
1460 BUG_ON(!local
->ops
->ampdu_action
);
1462 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_STOP
,
1465 printk(KERN_DEBUG
"HW problem - can not stop rx "
1466 "aggergation for tid %d\n", tid
);
1468 /* shutdown timer has not expired */
1469 if (initiator
!= WLAN_BACK_TIMER
)
1470 del_timer_sync(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1472 /* check if this is a self generated aggregation halt */
1473 if (initiator
== WLAN_BACK_RECIPIENT
|| initiator
== WLAN_BACK_TIMER
)
1474 ieee80211_send_delba(dev
, ra
, tid
, 0, reason
);
1476 /* free the reordering buffer */
1477 for (i
= 0; i
< sta
->ampdu_mlme
.tid_rx
[tid
]->buf_size
; i
++) {
1478 if (sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]) {
1479 /* release the reordered frames */
1480 dev_kfree_skb(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]);
1481 sta
->ampdu_mlme
.tid_rx
[tid
]->stored_mpdu_num
--;
1482 sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
] = NULL
;
1485 /* free resources */
1486 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
);
1487 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1488 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1489 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_IDLE
;
1495 static void ieee80211_sta_process_delba(struct net_device
*dev
,
1496 struct ieee80211_mgmt
*mgmt
, size_t len
)
1498 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1499 struct sta_info
*sta
;
1502 DECLARE_MAC_BUF(mac
);
1506 sta
= sta_info_get(local
, mgmt
->sa
);
1512 params
= le16_to_cpu(mgmt
->u
.action
.u
.delba
.params
);
1513 tid
= (params
& IEEE80211_DELBA_PARAM_TID_MASK
) >> 12;
1514 initiator
= (params
& IEEE80211_DELBA_PARAM_INITIATOR_MASK
) >> 11;
1516 #ifdef CONFIG_MAC80211_HT_DEBUG
1517 if (net_ratelimit())
1518 printk(KERN_DEBUG
"delba from %s (%s) tid %d reason code %d\n",
1519 print_mac(mac
, mgmt
->sa
),
1520 initiator
? "initiator" : "recipient", tid
,
1521 mgmt
->u
.action
.u
.delba
.reason_code
);
1522 #endif /* CONFIG_MAC80211_HT_DEBUG */
1524 if (initiator
== WLAN_BACK_INITIATOR
)
1525 ieee80211_sta_stop_rx_ba_session(dev
, sta
->addr
, tid
,
1526 WLAN_BACK_INITIATOR
, 0);
1527 else { /* WLAN_BACK_RECIPIENT */
1528 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1529 sta
->ampdu_mlme
.tid_state_tx
[tid
] =
1530 HT_AGG_STATE_OPERATIONAL
;
1531 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1532 ieee80211_stop_tx_ba_session(&local
->hw
, sta
->addr
, tid
,
1533 WLAN_BACK_RECIPIENT
);
1539 * After sending add Block Ack request we activated a timer until
1540 * add Block Ack response will arrive from the recipient.
1541 * If this timer expires sta_addba_resp_timer_expired will be executed.
1543 void sta_addba_resp_timer_expired(unsigned long data
)
1545 /* not an elegant detour, but there is no choice as the timer passes
1546 * only one argument, and both sta_info and TID are needed, so init
1547 * flow in sta_info_create gives the TID as data, while the timer_to_id
1548 * array gives the sta through container_of */
1549 u16 tid
= *(int *)data
;
1550 struct sta_info
*temp_sta
= container_of((void *)data
,
1551 struct sta_info
, timer_to_tid
[tid
]);
1553 struct ieee80211_local
*local
= temp_sta
->local
;
1554 struct ieee80211_hw
*hw
= &local
->hw
;
1555 struct sta_info
*sta
;
1560 sta
= sta_info_get(local
, temp_sta
->addr
);
1566 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1567 /* check if the TID waits for addBA response */
1568 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1569 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1570 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1571 *state
= HT_AGG_STATE_IDLE
;
1572 printk(KERN_DEBUG
"timer expired on tid %d but we are not "
1573 "expecting addBA response there", tid
);
1574 goto timer_expired_exit
;
1577 printk(KERN_DEBUG
"addBA response timer expired on tid %d\n", tid
);
1579 /* go through the state check in stop_BA_session */
1580 *state
= HT_AGG_STATE_OPERATIONAL
;
1581 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1582 ieee80211_stop_tx_ba_session(hw
, temp_sta
->addr
, tid
,
1583 WLAN_BACK_INITIATOR
);
1590 * After accepting the AddBA Request we activated a timer,
1591 * resetting it after each frame that arrives from the originator.
1592 * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
1594 void sta_rx_agg_session_timer_expired(unsigned long data
)
1596 /* not an elegant detour, but there is no choice as the timer passes
1597 * only one argument, and verious sta_info are needed here, so init
1598 * flow in sta_info_create gives the TID as data, while the timer_to_id
1599 * array gives the sta through container_of */
1600 u8
*ptid
= (u8
*)data
;
1601 u8
*timer_to_id
= ptid
- *ptid
;
1602 struct sta_info
*sta
= container_of(timer_to_id
, struct sta_info
,
1605 printk(KERN_DEBUG
"rx session timer expired on tid %d\n", (u16
)*ptid
);
1606 ieee80211_sta_stop_rx_ba_session(sta
->sdata
->dev
, sta
->addr
,
1607 (u16
)*ptid
, WLAN_BACK_TIMER
,
1608 WLAN_REASON_QSTA_TIMEOUT
);
1611 void ieee80211_sta_tear_down_BA_sessions(struct net_device
*dev
, u8
*addr
)
1613 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1616 for (i
= 0; i
< STA_TID_NUM
; i
++) {
1617 ieee80211_stop_tx_ba_session(&local
->hw
, addr
, i
,
1618 WLAN_BACK_INITIATOR
);
1619 ieee80211_sta_stop_rx_ba_session(dev
, addr
, i
,
1620 WLAN_BACK_RECIPIENT
,
1621 WLAN_REASON_QSTA_LEAVE_QBSS
);
1625 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1626 struct ieee80211_if_sta
*ifsta
,
1627 struct ieee80211_mgmt
*mgmt
,
1630 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1631 u16 auth_alg
, auth_transaction
, status_code
;
1632 DECLARE_MAC_BUF(mac
);
1634 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1635 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
) {
1636 printk(KERN_DEBUG
"%s: authentication frame received from "
1637 "%s, but not in authenticate state - ignored\n",
1638 dev
->name
, print_mac(mac
, mgmt
->sa
));
1643 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
1644 "received from %s - ignored\n",
1645 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1649 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1650 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1651 printk(KERN_DEBUG
"%s: authentication frame received from "
1652 "unknown AP (SA=%s BSSID=%s) - "
1653 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1654 print_mac(mac
, mgmt
->bssid
));
1658 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1659 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
1660 printk(KERN_DEBUG
"%s: authentication frame received from "
1661 "unknown BSSID (SA=%s BSSID=%s) - "
1662 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1663 print_mac(mac
, mgmt
->bssid
));
1667 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1668 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1669 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1671 printk(KERN_DEBUG
"%s: RX authentication from %s (alg=%d "
1672 "transaction=%d status=%d)\n",
1673 dev
->name
, print_mac(mac
, mgmt
->sa
), auth_alg
,
1674 auth_transaction
, status_code
);
1676 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
1677 /* IEEE 802.11 standard does not require authentication in IBSS
1678 * networks and most implementations do not seem to use it.
1679 * However, try to reply to authentication attempts if someone
1680 * has actually implemented this.
1681 * TODO: Could implement shared key authentication. */
1682 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
1683 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
1684 "frame (alg=%d transaction=%d)\n",
1685 dev
->name
, auth_alg
, auth_transaction
);
1688 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1691 if (auth_alg
!= ifsta
->auth_alg
||
1692 auth_transaction
!= ifsta
->auth_transaction
) {
1693 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1694 "(alg=%d transaction=%d)\n",
1695 dev
->name
, auth_alg
, auth_transaction
);
1699 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1700 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1701 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1702 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1704 const int num_algs
= ARRAY_SIZE(algs
);
1706 algs
[0] = algs
[1] = algs
[2] = 0xff;
1707 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1708 algs
[0] = WLAN_AUTH_OPEN
;
1709 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1710 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1711 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1712 algs
[2] = WLAN_AUTH_LEAP
;
1713 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1715 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1719 for (i
= 0; i
< num_algs
; i
++) {
1721 if (pos
>= num_algs
)
1723 if (algs
[pos
] == ifsta
->auth_alg
||
1726 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1727 !ieee80211_sta_wep_configured(dev
))
1729 ifsta
->auth_alg
= algs
[pos
];
1730 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1732 dev
->name
, ifsta
->auth_alg
);
1739 switch (ifsta
->auth_alg
) {
1740 case WLAN_AUTH_OPEN
:
1741 case WLAN_AUTH_LEAP
:
1742 ieee80211_auth_completed(dev
, ifsta
);
1744 case WLAN_AUTH_SHARED_KEY
:
1745 if (ifsta
->auth_transaction
== 4)
1746 ieee80211_auth_completed(dev
, ifsta
);
1748 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1754 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1755 struct ieee80211_if_sta
*ifsta
,
1756 struct ieee80211_mgmt
*mgmt
,
1760 DECLARE_MAC_BUF(mac
);
1763 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1764 "received from %s - ignored\n",
1765 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1769 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1770 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1771 "unknown AP (SA=%s BSSID=%s) - "
1772 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1773 print_mac(mac
, mgmt
->bssid
));
1777 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1779 printk(KERN_DEBUG
"%s: RX deauthentication from %s"
1781 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1783 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1784 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1787 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1788 ifsta
->state
== IEEE80211_ASSOCIATE
||
1789 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1790 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1791 mod_timer(&ifsta
->timer
, jiffies
+
1792 IEEE80211_RETRY_AUTH_INTERVAL
);
1795 ieee80211_set_disassoc(dev
, ifsta
, 1);
1796 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1800 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1801 struct ieee80211_if_sta
*ifsta
,
1802 struct ieee80211_mgmt
*mgmt
,
1806 DECLARE_MAC_BUF(mac
);
1809 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1810 "received from %s - ignored\n",
1811 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1815 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1816 printk(KERN_DEBUG
"%s: disassociation frame received from "
1817 "unknown AP (SA=%s BSSID=%s) - "
1818 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1819 print_mac(mac
, mgmt
->bssid
));
1823 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1825 printk(KERN_DEBUG
"%s: RX disassociation from %s"
1827 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1829 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1830 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1832 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1833 ifsta
->state
= IEEE80211_ASSOCIATE
;
1834 mod_timer(&ifsta
->timer
, jiffies
+
1835 IEEE80211_RETRY_AUTH_INTERVAL
);
1838 ieee80211_set_disassoc(dev
, ifsta
, 0);
1842 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
1843 struct ieee80211_if_sta
*ifsta
,
1844 struct ieee80211_mgmt
*mgmt
,
1848 struct ieee80211_local
*local
= sdata
->local
;
1849 struct net_device
*dev
= sdata
->dev
;
1850 struct ieee80211_supported_band
*sband
;
1851 struct sta_info
*sta
;
1852 u64 rates
, basic_rates
;
1853 u16 capab_info
, status_code
, aid
;
1854 struct ieee802_11_elems elems
;
1855 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
1858 DECLARE_MAC_BUF(mac
);
1859 bool have_higher_than_11mbit
= false;
1861 /* AssocResp and ReassocResp have identical structure, so process both
1862 * of them in this function. */
1864 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1865 printk(KERN_DEBUG
"%s: association frame received from "
1866 "%s, but not in associate state - ignored\n",
1867 dev
->name
, print_mac(mac
, mgmt
->sa
));
1872 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1873 "received from %s - ignored\n",
1874 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1878 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1879 printk(KERN_DEBUG
"%s: association frame received from "
1880 "unknown AP (SA=%s BSSID=%s) - "
1881 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1882 print_mac(mac
, mgmt
->bssid
));
1886 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1887 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1888 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1890 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
1891 "status=%d aid=%d)\n",
1892 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
1893 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
1895 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1896 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1897 dev
->name
, status_code
);
1898 /* if this was a reassociation, ensure we try a "full"
1899 * association next time. This works around some broken APs
1900 * which do not correctly reject reassociation requests. */
1901 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1905 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1906 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1907 "set\n", dev
->name
, aid
);
1908 aid
&= ~(BIT(15) | BIT(14));
1910 pos
= mgmt
->u
.assoc_resp
.variable
;
1911 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1913 if (!elems
.supp_rates
) {
1914 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1919 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1921 ifsta
->ap_capab
= capab_info
;
1923 kfree(ifsta
->assocresp_ies
);
1924 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1925 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1926 if (ifsta
->assocresp_ies
)
1927 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1931 /* Add STA entry for the AP */
1932 sta
= sta_info_get(local
, ifsta
->bssid
);
1934 struct ieee80211_sta_bss
*bss
;
1937 sta
= sta_info_alloc(sdata
, ifsta
->bssid
, GFP_ATOMIC
);
1939 printk(KERN_DEBUG
"%s: failed to alloc STA entry for"
1940 " the AP\n", dev
->name
);
1944 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
1945 local
->hw
.conf
.channel
->center_freq
,
1946 ifsta
->ssid
, ifsta
->ssid_len
);
1948 sta
->last_rssi
= bss
->rssi
;
1949 sta
->last_signal
= bss
->signal
;
1950 sta
->last_noise
= bss
->noise
;
1951 ieee80211_rx_bss_put(dev
, bss
);
1954 err
= sta_info_insert(sta
);
1956 printk(KERN_DEBUG
"%s: failed to insert STA entry for"
1957 " the AP (error %d)\n", dev
->name
, err
);
1964 * FIXME: Do we really need to update the sta_info's information here?
1965 * We already know about the AP (we found it in our list) so it
1966 * should already be filled with the right info, no?
1967 * As is stands, all this is racy because typically we assume
1968 * the information that is filled in here (except flags) doesn't
1969 * change while a STA structure is alive. As such, it should move
1970 * to between the sta_info_alloc() and sta_info_insert() above.
1973 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
|
1974 WLAN_STA_AUTHORIZED
;
1978 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
1980 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1981 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1984 have_higher_than_11mbit
= true;
1986 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
1987 if (sband
->bitrates
[j
].bitrate
== rate
)
1989 if (elems
.supp_rates
[i
] & 0x80)
1990 basic_rates
|= BIT(j
);
1994 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1995 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1998 have_higher_than_11mbit
= true;
2000 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2001 if (sband
->bitrates
[j
].bitrate
== rate
)
2003 if (elems
.ext_supp_rates
[i
] & 0x80)
2004 basic_rates
|= BIT(j
);
2008 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] = rates
;
2009 sdata
->basic_rates
= basic_rates
;
2011 /* cf. IEEE 802.11 9.2.12 */
2012 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
2013 have_higher_than_11mbit
)
2014 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
2016 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
2018 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&& elems
.wmm_param
) {
2019 struct ieee80211_ht_bss_info bss_info
;
2020 ieee80211_ht_cap_ie_to_ht_info(
2021 (struct ieee80211_ht_cap
*)
2022 elems
.ht_cap_elem
, &sta
->ht_info
);
2023 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2024 (struct ieee80211_ht_addt_info
*)
2025 elems
.ht_info_elem
, &bss_info
);
2026 ieee80211_handle_ht(local
, 1, &sta
->ht_info
, &bss_info
);
2029 rate_control_rate_init(sta
, local
);
2031 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2032 sta
->flags
|= WLAN_STA_WME
;
2034 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2035 elems
.wmm_param_len
);
2039 /* set AID and assoc capability,
2040 * ieee80211_set_associated() will tell the driver */
2041 bss_conf
->aid
= aid
;
2042 bss_conf
->assoc_capability
= capab_info
;
2043 ieee80211_set_associated(dev
, ifsta
, 1);
2045 ieee80211_associated(dev
, ifsta
);
2049 /* Caller must hold local->sta_bss_lock */
2050 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
2051 struct ieee80211_sta_bss
*bss
)
2053 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2056 if (bss_mesh_cfg(bss
))
2057 hash_idx
= mesh_id_hash(bss_mesh_id(bss
),
2058 bss_mesh_id_len(bss
));
2060 hash_idx
= STA_HASH(bss
->bssid
);
2062 bss
->hnext
= local
->sta_bss_hash
[hash_idx
];
2063 local
->sta_bss_hash
[hash_idx
] = bss
;
2067 /* Caller must hold local->sta_bss_lock */
2068 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
2069 struct ieee80211_sta_bss
*bss
)
2071 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2072 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
2073 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
2077 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
2080 prev
->hnext
= bss
->hnext
;
2089 static struct ieee80211_sta_bss
*
2090 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int freq
,
2091 u8
*ssid
, u8 ssid_len
)
2093 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2094 struct ieee80211_sta_bss
*bss
;
2096 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2099 atomic_inc(&bss
->users
);
2100 atomic_inc(&bss
->users
);
2101 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
2103 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
2104 memcpy(bss
->ssid
, ssid
, ssid_len
);
2105 bss
->ssid_len
= ssid_len
;
2108 spin_lock_bh(&local
->sta_bss_lock
);
2109 /* TODO: order by RSSI? */
2110 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2111 __ieee80211_rx_bss_hash_add(dev
, bss
);
2112 spin_unlock_bh(&local
->sta_bss_lock
);
2116 static struct ieee80211_sta_bss
*
2117 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
2118 u8
*ssid
, u8 ssid_len
)
2120 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2121 struct ieee80211_sta_bss
*bss
;
2123 spin_lock_bh(&local
->sta_bss_lock
);
2124 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
2126 if (!bss_mesh_cfg(bss
) &&
2127 !memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
2128 bss
->freq
== freq
&&
2129 bss
->ssid_len
== ssid_len
&&
2130 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
2131 atomic_inc(&bss
->users
);
2136 spin_unlock_bh(&local
->sta_bss_lock
);
2140 #ifdef CONFIG_MAC80211_MESH
2141 static struct ieee80211_sta_bss
*
2142 ieee80211_rx_mesh_bss_get(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2143 u8
*mesh_cfg
, int freq
)
2145 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2146 struct ieee80211_sta_bss
*bss
;
2148 spin_lock_bh(&local
->sta_bss_lock
);
2149 bss
= local
->sta_bss_hash
[mesh_id_hash(mesh_id
, mesh_id_len
)];
2151 if (bss_mesh_cfg(bss
) &&
2152 !memcmp(bss_mesh_cfg(bss
), mesh_cfg
, MESH_CFG_CMP_LEN
) &&
2153 bss
->freq
== freq
&&
2154 mesh_id_len
== bss
->mesh_id_len
&&
2155 (mesh_id_len
== 0 || !memcmp(bss
->mesh_id
, mesh_id
,
2157 atomic_inc(&bss
->users
);
2162 spin_unlock_bh(&local
->sta_bss_lock
);
2166 static struct ieee80211_sta_bss
*
2167 ieee80211_rx_mesh_bss_add(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2168 u8
*mesh_cfg
, int mesh_config_len
, int freq
)
2170 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2171 struct ieee80211_sta_bss
*bss
;
2173 if (mesh_config_len
!= MESH_CFG_LEN
)
2176 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2180 bss
->mesh_cfg
= kmalloc(MESH_CFG_CMP_LEN
, GFP_ATOMIC
);
2181 if (!bss
->mesh_cfg
) {
2186 if (mesh_id_len
&& mesh_id_len
<= IEEE80211_MAX_MESH_ID_LEN
) {
2187 bss
->mesh_id
= kmalloc(mesh_id_len
, GFP_ATOMIC
);
2188 if (!bss
->mesh_id
) {
2189 kfree(bss
->mesh_cfg
);
2193 memcpy(bss
->mesh_id
, mesh_id
, mesh_id_len
);
2196 atomic_inc(&bss
->users
);
2197 atomic_inc(&bss
->users
);
2198 memcpy(bss
->mesh_cfg
, mesh_cfg
, MESH_CFG_CMP_LEN
);
2199 bss
->mesh_id_len
= mesh_id_len
;
2201 spin_lock_bh(&local
->sta_bss_lock
);
2202 /* TODO: order by RSSI? */
2203 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2204 __ieee80211_rx_bss_hash_add(dev
, bss
);
2205 spin_unlock_bh(&local
->sta_bss_lock
);
2210 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
2216 kfree(bss_mesh_id(bss
));
2217 kfree(bss_mesh_cfg(bss
));
2222 static void ieee80211_rx_bss_put(struct net_device
*dev
,
2223 struct ieee80211_sta_bss
*bss
)
2225 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2226 if (!atomic_dec_and_test(&bss
->users
))
2229 spin_lock_bh(&local
->sta_bss_lock
);
2230 __ieee80211_rx_bss_hash_del(dev
, bss
);
2231 list_del(&bss
->list
);
2232 spin_unlock_bh(&local
->sta_bss_lock
);
2233 ieee80211_rx_bss_free(bss
);
2237 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
2239 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2240 spin_lock_init(&local
->sta_bss_lock
);
2241 INIT_LIST_HEAD(&local
->sta_bss_list
);
2245 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
2247 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2248 struct ieee80211_sta_bss
*bss
, *tmp
;
2250 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
2251 ieee80211_rx_bss_put(dev
, bss
);
2255 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2256 struct ieee80211_if_sta
*ifsta
,
2257 struct ieee80211_sta_bss
*bss
)
2259 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2260 int res
, rates
, i
, j
;
2261 struct sk_buff
*skb
;
2262 struct ieee80211_mgmt
*mgmt
;
2263 struct ieee80211_tx_control control
;
2264 struct rate_selection ratesel
;
2266 struct ieee80211_sub_if_data
*sdata
;
2267 struct ieee80211_supported_band
*sband
;
2269 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2271 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2273 /* Remove possible STA entries from other IBSS networks. */
2274 sta_info_flush_delayed(sdata
);
2276 if (local
->ops
->reset_tsf
) {
2277 /* Reset own TSF to allow time synchronization work. */
2278 local
->ops
->reset_tsf(local_to_hw(local
));
2280 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2281 res
= ieee80211_if_config(dev
);
2285 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2287 sdata
->drop_unencrypted
= bss
->capability
&
2288 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2290 res
= ieee80211_set_freq(local
, bss
->freq
);
2292 if (local
->oper_channel
->flags
& IEEE80211_CHAN_NO_IBSS
) {
2293 printk(KERN_DEBUG
"%s: IBSS not allowed on frequency "
2294 "%d MHz\n", dev
->name
, local
->oper_channel
->center_freq
);
2298 /* Set beacon template */
2299 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2304 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2306 mgmt
= (struct ieee80211_mgmt
*)
2307 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2308 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2309 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2310 IEEE80211_STYPE_BEACON
);
2311 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2312 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2313 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2314 mgmt
->u
.beacon
.beacon_int
=
2315 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2316 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2318 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2319 *pos
++ = WLAN_EID_SSID
;
2320 *pos
++ = ifsta
->ssid_len
;
2321 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2323 rates
= bss
->supp_rates_len
;
2326 pos
= skb_put(skb
, 2 + rates
);
2327 *pos
++ = WLAN_EID_SUPP_RATES
;
2329 memcpy(pos
, bss
->supp_rates
, rates
);
2331 if (bss
->band
== IEEE80211_BAND_2GHZ
) {
2332 pos
= skb_put(skb
, 2 + 1);
2333 *pos
++ = WLAN_EID_DS_PARAMS
;
2335 *pos
++ = ieee80211_frequency_to_channel(bss
->freq
);
2338 pos
= skb_put(skb
, 2 + 2);
2339 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2341 /* FIX: set ATIM window based on scan results */
2345 if (bss
->supp_rates_len
> 8) {
2346 rates
= bss
->supp_rates_len
- 8;
2347 pos
= skb_put(skb
, 2 + rates
);
2348 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2350 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2353 memset(&control
, 0, sizeof(control
));
2354 rate_control_get_rate(dev
, sband
, skb
, &ratesel
);
2355 if (!ratesel
.rate
) {
2356 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2357 "for IBSS beacon\n", dev
->name
);
2360 control
.vif
= &sdata
->vif
;
2361 control
.tx_rate
= ratesel
.rate
;
2362 if (sdata
->bss_conf
.use_short_preamble
&&
2363 ratesel
.rate
->flags
& IEEE80211_RATE_SHORT_PREAMBLE
)
2364 control
.flags
|= IEEE80211_TXCTL_SHORT_PREAMBLE
;
2365 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
2366 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
2367 control
.retry_limit
= 1;
2369 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
2370 if (ifsta
->probe_resp
) {
2371 mgmt
= (struct ieee80211_mgmt
*)
2372 ifsta
->probe_resp
->data
;
2373 mgmt
->frame_control
=
2374 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2375 IEEE80211_STYPE_PROBE_RESP
);
2377 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
2378 "template for IBSS\n", dev
->name
);
2381 if (local
->ops
->beacon_update
&&
2382 local
->ops
->beacon_update(local_to_hw(local
),
2383 skb
, &control
) == 0) {
2384 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
2385 "template\n", dev
->name
);
2390 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2391 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2392 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2393 for (j
= 0; j
< sband
->n_bitrates
; j
++)
2394 if (sband
->bitrates
[j
].bitrate
== bitrate
)
2397 ifsta
->supp_rates_bits
[local
->hw
.conf
.channel
->band
] = rates
;
2399 ieee80211_sta_def_wmm_params(dev
, bss
, 1);
2403 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
2404 "template\n", dev
->name
);
2408 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2409 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2411 ieee80211_rx_bss_put(dev
, bss
);
2416 u64
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
2417 struct ieee802_11_elems
*elems
,
2418 enum ieee80211_band band
)
2420 struct ieee80211_supported_band
*sband
;
2421 struct ieee80211_rate
*bitrates
;
2425 sband
= local
->hw
.wiphy
->bands
[band
];
2429 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2432 bitrates
= sband
->bitrates
;
2433 num_rates
= sband
->n_bitrates
;
2435 for (i
= 0; i
< elems
->supp_rates_len
+
2436 elems
->ext_supp_rates_len
; i
++) {
2439 if (i
< elems
->supp_rates_len
)
2440 rate
= elems
->supp_rates
[i
];
2441 else if (elems
->ext_supp_rates
)
2442 rate
= elems
->ext_supp_rates
2443 [i
- elems
->supp_rates_len
];
2444 own_rate
= 5 * (rate
& 0x7f);
2445 for (j
= 0; j
< num_rates
; j
++)
2446 if (bitrates
[j
].bitrate
== own_rate
)
2447 supp_rates
|= BIT(j
);
2453 static void ieee80211_rx_bss_info(struct net_device
*dev
,
2454 struct ieee80211_mgmt
*mgmt
,
2456 struct ieee80211_rx_status
*rx_status
,
2459 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2460 struct ieee802_11_elems elems
;
2463 struct ieee80211_sta_bss
*bss
;
2464 struct sta_info
*sta
;
2465 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2466 u64 beacon_timestamp
, rx_timestamp
;
2467 struct ieee80211_channel
*channel
;
2468 DECLARE_MAC_BUF(mac
);
2469 DECLARE_MAC_BUF(mac2
);
2471 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
2472 return; /* ignore ProbeResp to foreign address */
2475 printk(KERN_DEBUG
"%s: RX %s from %s to %s\n",
2476 dev
->name
, beacon
? "Beacon" : "Probe Response",
2477 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
));
2480 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2484 beacon_timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
2485 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2487 if (ieee80211_vif_is_mesh(&sdata
->vif
) && elems
.mesh_id
&&
2488 elems
.mesh_config
&& mesh_matches_local(&elems
, dev
)) {
2489 u64 rates
= ieee80211_sta_get_rates(local
, &elems
,
2492 mesh_neighbour_update(mgmt
->sa
, rates
, dev
,
2493 mesh_peer_accepts_plinks(&elems
, dev
));
2498 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
2499 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
2500 (sta
= sta_info_get(local
, mgmt
->sa
))) {
2502 u64 supp_rates
= ieee80211_sta_get_rates(local
, &elems
,
2505 prev_rates
= sta
->supp_rates
[rx_status
->band
];
2506 sta
->supp_rates
[rx_status
->band
] &= supp_rates
;
2507 if (sta
->supp_rates
[rx_status
->band
] == 0) {
2508 /* No matching rates - this should not really happen.
2509 * Make sure that at least one rate is marked
2510 * supported to avoid issues with TX rate ctrl. */
2511 sta
->supp_rates
[rx_status
->band
] =
2512 sdata
->u
.sta
.supp_rates_bits
[rx_status
->band
];
2514 if (sta
->supp_rates
[rx_status
->band
] != prev_rates
) {
2515 printk(KERN_DEBUG
"%s: updated supp_rates set for "
2516 "%s based on beacon info (0x%llx & 0x%llx -> "
2518 dev
->name
, print_mac(mac
, sta
->addr
),
2519 (unsigned long long) prev_rates
,
2520 (unsigned long long) supp_rates
,
2521 (unsigned long long) sta
->supp_rates
[rx_status
->band
]);
2527 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
2528 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0]);
2530 freq
= rx_status
->freq
;
2532 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
2534 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
2537 #ifdef CONFIG_MAC80211_MESH
2538 if (elems
.mesh_config
)
2539 bss
= ieee80211_rx_mesh_bss_get(dev
, elems
.mesh_id
,
2540 elems
.mesh_id_len
, elems
.mesh_config
, freq
);
2543 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, freq
,
2544 elems
.ssid
, elems
.ssid_len
);
2546 #ifdef CONFIG_MAC80211_MESH
2547 if (elems
.mesh_config
)
2548 bss
= ieee80211_rx_mesh_bss_add(dev
, elems
.mesh_id
,
2549 elems
.mesh_id_len
, elems
.mesh_config
,
2550 elems
.mesh_config_len
, freq
);
2553 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, freq
,
2554 elems
.ssid
, elems
.ssid_len
);
2559 /* TODO: order by RSSI? */
2560 spin_lock_bh(&local
->sta_bss_lock
);
2561 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
2562 spin_unlock_bh(&local
->sta_bss_lock
);
2566 bss
->band
= rx_status
->band
;
2568 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
2569 bss
->probe_resp
&& beacon
) {
2571 * Do not allow beacon to override data from Probe Response. */
2572 ieee80211_rx_bss_put(dev
, bss
);
2576 /* save the ERP value so that it is available at association time */
2577 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
2578 bss
->erp_value
= elems
.erp_info
[0];
2579 bss
->has_erp_value
= 1;
2582 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
2583 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2585 bss
->supp_rates_len
= 0;
2586 if (elems
.supp_rates
) {
2587 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2588 if (clen
> elems
.supp_rates_len
)
2589 clen
= elems
.supp_rates_len
;
2590 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
2592 bss
->supp_rates_len
+= clen
;
2594 if (elems
.ext_supp_rates
) {
2595 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2596 if (clen
> elems
.ext_supp_rates_len
)
2597 clen
= elems
.ext_supp_rates_len
;
2598 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
2599 elems
.ext_supp_rates
, clen
);
2600 bss
->supp_rates_len
+= clen
;
2604 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
2605 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
2607 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
2609 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
2610 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
2612 bss
->wpa_ie_len
= 0;
2613 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
2616 bss
->wpa_ie_len
= 0;
2620 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
2621 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
2623 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
2625 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
2626 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
2628 bss
->rsn_ie_len
= 0;
2629 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
2632 bss
->rsn_ie_len
= 0;
2635 if (elems
.wmm_param
&&
2636 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
2637 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
2639 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
2641 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
2642 elems
.wmm_param_len
+ 2);
2643 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
2645 bss
->wmm_ie_len
= 0;
2646 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
2649 bss
->wmm_ie_len
= 0;
2651 if (elems
.ht_cap_elem
&&
2652 (!bss
->ht_ie
|| bss
->ht_ie_len
!= elems
.ht_cap_elem_len
||
2653 memcmp(bss
->ht_ie
, elems
.ht_cap_elem
, elems
.ht_cap_elem_len
))) {
2655 bss
->ht_ie
= kmalloc(elems
.ht_cap_elem_len
+ 2, GFP_ATOMIC
);
2657 memcpy(bss
->ht_ie
, elems
.ht_cap_elem
- 2,
2658 elems
.ht_cap_elem_len
+ 2);
2659 bss
->ht_ie_len
= elems
.ht_cap_elem_len
+ 2;
2662 } else if (!elems
.ht_cap_elem
&& bss
->ht_ie
) {
2668 bss
->timestamp
= beacon_timestamp
;
2669 bss
->last_update
= jiffies
;
2670 bss
->rssi
= rx_status
->ssi
;
2671 bss
->signal
= rx_status
->signal
;
2672 bss
->noise
= rx_status
->noise
;
2676 /* check if we need to merge IBSS */
2677 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
2678 !local
->sta_sw_scanning
&& !local
->sta_hw_scanning
&&
2679 bss
->capability
& WLAN_CAPABILITY_IBSS
&&
2680 bss
->freq
== local
->oper_channel
->center_freq
&&
2681 elems
.ssid_len
== sdata
->u
.sta
.ssid_len
&&
2682 memcmp(elems
.ssid
, sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
) == 0) {
2683 if (rx_status
->flag
& RX_FLAG_TSFT
) {
2684 /* in order for correct IBSS merging we need mactime
2686 * since mactime is defined as the time the first data
2687 * symbol of the frame hits the PHY, and the timestamp
2688 * of the beacon is defined as "the time that the data
2689 * symbol containing the first bit of the timestamp is
2690 * transmitted to the PHY plus the transmitting STA’s
2691 * delays through its local PHY from the MAC-PHY
2692 * interface to its interface with the WM"
2693 * (802.11 11.1.2) - equals the time this bit arrives at
2694 * the receiver - we have to take into account the
2695 * offset between the two.
2696 * e.g: at 1 MBit that means mactime is 192 usec earlier
2697 * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
2699 int rate
= local
->hw
.wiphy
->bands
[rx_status
->band
]->
2700 bitrates
[rx_status
->rate_idx
].bitrate
;
2701 rx_timestamp
= rx_status
->mactime
+ (24 * 8 * 10 / rate
);
2702 } else if (local
&& local
->ops
&& local
->ops
->get_tsf
)
2703 /* second best option: get current TSF */
2704 rx_timestamp
= local
->ops
->get_tsf(local_to_hw(local
));
2706 /* can't merge without knowing the TSF */
2707 rx_timestamp
= -1LLU;
2708 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2709 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
2710 "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
2711 print_mac(mac
, mgmt
->sa
),
2712 print_mac(mac2
, mgmt
->bssid
),
2713 (unsigned long long)rx_timestamp
,
2714 (unsigned long long)beacon_timestamp
,
2715 (unsigned long long)(rx_timestamp
- beacon_timestamp
),
2717 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2718 if (beacon_timestamp
> rx_timestamp
) {
2719 #ifndef CONFIG_MAC80211_IBSS_DEBUG
2720 if (net_ratelimit())
2722 printk(KERN_DEBUG
"%s: beacon TSF higher than "
2723 "local TSF - IBSS merge with BSSID %s\n",
2724 dev
->name
, print_mac(mac
, mgmt
->bssid
));
2725 ieee80211_sta_join_ibss(dev
, &sdata
->u
.sta
, bss
);
2726 ieee80211_ibss_add_sta(dev
, NULL
,
2727 mgmt
->bssid
, mgmt
->sa
);
2731 ieee80211_rx_bss_put(dev
, bss
);
2735 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
2736 struct ieee80211_mgmt
*mgmt
,
2738 struct ieee80211_rx_status
*rx_status
)
2740 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
2744 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
2745 struct ieee80211_mgmt
*mgmt
,
2747 struct ieee80211_rx_status
*rx_status
)
2749 struct ieee80211_sub_if_data
*sdata
;
2750 struct ieee80211_if_sta
*ifsta
;
2752 struct ieee802_11_elems elems
;
2753 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2754 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
2757 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
2759 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2760 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2762 ifsta
= &sdata
->u
.sta
;
2764 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
2765 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
2768 /* Process beacon from the current BSS */
2769 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2773 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2775 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
2776 changed
|= ieee80211_handle_erp_ie(sdata
, elems
.erp_info
[0]);
2778 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&&
2779 elems
.wmm_param
&& conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
2780 struct ieee80211_ht_bss_info bss_info
;
2782 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2783 (struct ieee80211_ht_addt_info
*)
2784 elems
.ht_info_elem
, &bss_info
);
2785 changed
|= ieee80211_handle_ht(local
, 1, &conf
->ht_conf
,
2789 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2790 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2791 elems
.wmm_param_len
);
2794 ieee80211_bss_info_change_notify(sdata
, changed
);
2798 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
2799 struct ieee80211_if_sta
*ifsta
,
2800 struct ieee80211_mgmt
*mgmt
,
2802 struct ieee80211_rx_status
*rx_status
)
2804 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2805 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2807 struct sk_buff
*skb
;
2808 struct ieee80211_mgmt
*resp
;
2810 DECLARE_MAC_BUF(mac
);
2811 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2812 DECLARE_MAC_BUF(mac2
);
2813 DECLARE_MAC_BUF(mac3
);
2816 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
||
2817 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
2818 len
< 24 + 2 || !ifsta
->probe_resp
)
2821 if (local
->ops
->tx_last_beacon
)
2822 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
2826 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2827 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
2828 "%s (tx_last_beacon=%d)\n",
2829 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
2830 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
2831 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2833 if (!tx_last_beacon
)
2836 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
2837 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
2840 end
= ((u8
*) mgmt
) + len
;
2841 pos
= mgmt
->u
.probe_req
.variable
;
2842 if (pos
[0] != WLAN_EID_SSID
||
2843 pos
+ 2 + pos
[1] > end
) {
2844 if (net_ratelimit()) {
2845 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
2847 dev
->name
, print_mac(mac
, mgmt
->sa
));
2852 (pos
[1] != ifsta
->ssid_len
||
2853 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
2854 /* Ignore ProbeReq for foreign SSID */
2858 /* Reply with ProbeResp */
2859 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
2863 resp
= (struct ieee80211_mgmt
*) skb
->data
;
2864 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
2865 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2866 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
2867 dev
->name
, print_mac(mac
, resp
->da
));
2868 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2869 ieee80211_sta_tx(dev
, skb
, 0);
2872 static void ieee80211_rx_mgmt_action(struct net_device
*dev
,
2873 struct ieee80211_if_sta
*ifsta
,
2874 struct ieee80211_mgmt
*mgmt
,
2876 struct ieee80211_rx_status
*rx_status
)
2878 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2880 if (len
< IEEE80211_MIN_ACTION_SIZE
)
2883 switch (mgmt
->u
.action
.category
) {
2884 case WLAN_CATEGORY_BACK
:
2885 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
2886 case WLAN_ACTION_ADDBA_REQ
:
2887 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2888 sizeof(mgmt
->u
.action
.u
.addba_req
)))
2890 ieee80211_sta_process_addba_request(dev
, mgmt
, len
);
2892 case WLAN_ACTION_ADDBA_RESP
:
2893 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2894 sizeof(mgmt
->u
.action
.u
.addba_resp
)))
2896 ieee80211_sta_process_addba_resp(dev
, mgmt
, len
);
2898 case WLAN_ACTION_DELBA
:
2899 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2900 sizeof(mgmt
->u
.action
.u
.delba
)))
2902 ieee80211_sta_process_delba(dev
, mgmt
, len
);
2905 if (net_ratelimit())
2906 printk(KERN_DEBUG
"%s: Rx unknown A-MPDU action\n",
2911 case PLINK_CATEGORY
:
2912 if (ieee80211_vif_is_mesh(&sdata
->vif
))
2913 mesh_rx_plink_frame(dev
, mgmt
, len
, rx_status
);
2915 case MESH_PATH_SEL_CATEGORY
:
2916 if (ieee80211_vif_is_mesh(&sdata
->vif
))
2917 mesh_rx_path_sel_frame(dev
, mgmt
, len
);
2920 if (net_ratelimit())
2921 printk(KERN_DEBUG
"%s: Rx unknown action frame - "
2922 "category=%d\n", dev
->name
, mgmt
->u
.action
.category
);
2927 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
2928 struct ieee80211_rx_status
*rx_status
)
2930 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2931 struct ieee80211_sub_if_data
*sdata
;
2932 struct ieee80211_if_sta
*ifsta
;
2933 struct ieee80211_mgmt
*mgmt
;
2939 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2940 ifsta
= &sdata
->u
.sta
;
2942 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2943 fc
= le16_to_cpu(mgmt
->frame_control
);
2945 switch (fc
& IEEE80211_FCTL_STYPE
) {
2946 case IEEE80211_STYPE_PROBE_REQ
:
2947 case IEEE80211_STYPE_PROBE_RESP
:
2948 case IEEE80211_STYPE_BEACON
:
2949 case IEEE80211_STYPE_ACTION
:
2950 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
2951 case IEEE80211_STYPE_AUTH
:
2952 case IEEE80211_STYPE_ASSOC_RESP
:
2953 case IEEE80211_STYPE_REASSOC_RESP
:
2954 case IEEE80211_STYPE_DEAUTH
:
2955 case IEEE80211_STYPE_DISASSOC
:
2956 skb_queue_tail(&ifsta
->skb_queue
, skb
);
2957 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2960 printk(KERN_DEBUG
"%s: received unknown management frame - "
2961 "stype=%d\n", dev
->name
,
2962 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
2971 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
2972 struct sk_buff
*skb
)
2974 struct ieee80211_rx_status
*rx_status
;
2975 struct ieee80211_sub_if_data
*sdata
;
2976 struct ieee80211_if_sta
*ifsta
;
2977 struct ieee80211_mgmt
*mgmt
;
2980 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2981 ifsta
= &sdata
->u
.sta
;
2983 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
2984 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2985 fc
= le16_to_cpu(mgmt
->frame_control
);
2987 switch (fc
& IEEE80211_FCTL_STYPE
) {
2988 case IEEE80211_STYPE_PROBE_REQ
:
2989 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
2992 case IEEE80211_STYPE_PROBE_RESP
:
2993 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
2995 case IEEE80211_STYPE_BEACON
:
2996 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
2998 case IEEE80211_STYPE_AUTH
:
2999 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
3001 case IEEE80211_STYPE_ASSOC_RESP
:
3002 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 0);
3004 case IEEE80211_STYPE_REASSOC_RESP
:
3005 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 1);
3007 case IEEE80211_STYPE_DEAUTH
:
3008 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
3010 case IEEE80211_STYPE_DISASSOC
:
3011 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
3013 case IEEE80211_STYPE_ACTION
:
3014 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
, rx_status
);
3023 ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
3024 struct ieee80211_rx_status
*rx_status
)
3026 struct ieee80211_mgmt
*mgmt
;
3030 return RX_DROP_UNUSABLE
;
3032 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3033 fc
= le16_to_cpu(mgmt
->frame_control
);
3035 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_CTL
)
3039 return RX_DROP_MONITOR
;
3041 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
3042 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
3043 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
3044 skb
->len
, rx_status
);
3047 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
3048 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
3058 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
3060 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3062 struct sta_info
*sta
;
3063 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3067 list_for_each_entry_rcu(sta
, &local
->sta_list
, list
) {
3068 if (sta
->sdata
== sdata
&&
3069 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
3082 static void ieee80211_sta_expire(struct net_device
*dev
, unsigned long exp_time
)
3084 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3085 struct sta_info
*sta
, *tmp
;
3086 LIST_HEAD(tmp_list
);
3087 DECLARE_MAC_BUF(mac
);
3088 unsigned long flags
;
3090 spin_lock_irqsave(&local
->sta_lock
, flags
);
3091 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
3092 if (time_after(jiffies
, sta
->last_rx
+ exp_time
)) {
3093 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
3094 dev
->name
, print_mac(mac
, sta
->addr
));
3095 __sta_info_unlink(&sta
);
3097 list_add(&sta
->list
, &tmp_list
);
3099 spin_unlock_irqrestore(&local
->sta_lock
, flags
);
3104 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
)
3105 sta_info_destroy(sta
);
3110 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
3111 struct ieee80211_if_sta
*ifsta
)
3113 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
3115 ieee80211_sta_expire(dev
, IEEE80211_IBSS_INACTIVITY_LIMIT
);
3116 if (ieee80211_sta_active_ibss(dev
))
3119 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
3120 "IBSS networks with same SSID (merge)\n", dev
->name
);
3121 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
3125 #ifdef CONFIG_MAC80211_MESH
3126 static void ieee80211_mesh_housekeeping(struct net_device
*dev
,
3127 struct ieee80211_if_sta
*ifsta
)
3129 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3132 ieee80211_sta_expire(dev
, IEEE80211_MESH_PEER_INACTIVITY_LIMIT
);
3133 mesh_path_expire(dev
);
3135 free_plinks
= mesh_plink_availables(sdata
);
3136 if (free_plinks
!= sdata
->u
.sta
.accepting_plinks
)
3137 ieee80211_if_config_beacon(dev
);
3139 mod_timer(&ifsta
->timer
, jiffies
+
3140 IEEE80211_MESH_HOUSEKEEPING_INTERVAL
);
3144 void ieee80211_start_mesh(struct net_device
*dev
)
3146 struct ieee80211_if_sta
*ifsta
;
3147 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3148 ifsta
= &sdata
->u
.sta
;
3149 ifsta
->state
= IEEE80211_MESH_UP
;
3150 ieee80211_sta_timer((unsigned long)sdata
);
3155 void ieee80211_sta_timer(unsigned long data
)
3157 struct ieee80211_sub_if_data
*sdata
=
3158 (struct ieee80211_sub_if_data
*) data
;
3159 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3160 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
3162 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3163 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3166 void ieee80211_sta_work(struct work_struct
*work
)
3168 struct ieee80211_sub_if_data
*sdata
=
3169 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
3170 struct net_device
*dev
= sdata
->dev
;
3171 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3172 struct ieee80211_if_sta
*ifsta
;
3173 struct sk_buff
*skb
;
3175 if (!netif_running(dev
))
3178 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
3181 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
3182 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
3183 sdata
->vif
.type
!= IEEE80211_IF_TYPE_MESH_POINT
) {
3184 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
3185 "(type=%d)\n", dev
->name
, sdata
->vif
.type
);
3188 ifsta
= &sdata
->u
.sta
;
3190 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
3191 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
3193 #ifdef CONFIG_MAC80211_MESH
3194 if (ifsta
->preq_queue_len
&&
3196 ifsta
->last_preq
+ msecs_to_jiffies(ifsta
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
3197 mesh_path_start_discovery(dev
);
3200 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
3201 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
3202 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
3203 if (ifsta
->scan_ssid_len
)
3204 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
3206 ieee80211_sta_start_scan(dev
, NULL
, 0);
3210 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
3211 if (ieee80211_sta_config_auth(dev
, ifsta
))
3213 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3214 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
3217 switch (ifsta
->state
) {
3218 case IEEE80211_DISABLED
:
3220 case IEEE80211_AUTHENTICATE
:
3221 ieee80211_authenticate(dev
, ifsta
);
3223 case IEEE80211_ASSOCIATE
:
3224 ieee80211_associate(dev
, ifsta
);
3226 case IEEE80211_ASSOCIATED
:
3227 ieee80211_associated(dev
, ifsta
);
3229 case IEEE80211_IBSS_SEARCH
:
3230 ieee80211_sta_find_ibss(dev
, ifsta
);
3232 case IEEE80211_IBSS_JOINED
:
3233 ieee80211_sta_merge_ibss(dev
, ifsta
);
3235 #ifdef CONFIG_MAC80211_MESH
3236 case IEEE80211_MESH_UP
:
3237 ieee80211_mesh_housekeeping(dev
, ifsta
);
3241 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
3246 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
3247 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
3248 "mixed-cell disabled - disassociate\n", dev
->name
);
3250 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
3251 ieee80211_set_disassoc(dev
, ifsta
, 0);
3256 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
3257 struct ieee80211_if_sta
*ifsta
)
3259 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3261 if (local
->ops
->reset_tsf
) {
3262 /* Reset own TSF to allow time synchronization work. */
3263 local
->ops
->reset_tsf(local_to_hw(local
));
3266 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
3269 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
3270 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3271 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
3272 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
3273 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
3274 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
3276 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3277 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
3279 ifsta
->auth_transaction
= -1;
3280 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
3281 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
3282 netif_carrier_off(dev
);
3286 void ieee80211_sta_req_auth(struct net_device
*dev
,
3287 struct ieee80211_if_sta
*ifsta
)
3289 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3290 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3292 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3295 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
3296 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
3297 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
3298 IEEE80211_STA_AUTO_SSID_SEL
))) {
3299 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3300 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3304 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
3305 const char *ssid
, int ssid_len
)
3307 int tmp
, hidden_ssid
;
3309 if (ssid_len
== ifsta
->ssid_len
&&
3310 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
3313 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
3319 if (ssid
[tmp
] != '\0') {
3325 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
3328 if (ssid_len
== 1 && ssid
[0] == ' ')
3334 static int ieee80211_sta_config_auth(struct net_device
*dev
,
3335 struct ieee80211_if_sta
*ifsta
)
3337 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3338 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3339 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
3340 int top_rssi
= 0, freq
;
3342 if (!(ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
3343 IEEE80211_STA_AUTO_BSSID_SEL
| IEEE80211_STA_AUTO_CHANNEL_SEL
))) {
3344 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3345 ieee80211_sta_reset_auth(dev
, ifsta
);
3349 spin_lock_bh(&local
->sta_bss_lock
);
3350 freq
= local
->oper_channel
->center_freq
;
3351 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3352 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
3355 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
3356 !!sdata
->default_key
)
3359 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
3363 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
3364 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
3367 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
3368 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
3371 if (!selected
|| top_rssi
< bss
->rssi
) {
3373 top_rssi
= bss
->rssi
;
3377 atomic_inc(&selected
->users
);
3378 spin_unlock_bh(&local
->sta_bss_lock
);
3381 ieee80211_set_freq(local
, selected
->freq
);
3382 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
3383 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
3384 selected
->ssid_len
);
3385 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
3386 ieee80211_sta_def_wmm_params(dev
, selected
, 0);
3387 ieee80211_rx_bss_put(dev
, selected
);
3388 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3389 ieee80211_sta_reset_auth(dev
, ifsta
);
3392 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
3393 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
3394 ieee80211_sta_start_scan(dev
, NULL
, 0);
3396 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
3398 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3399 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3401 ifsta
->state
= IEEE80211_DISABLED
;
3407 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
3408 struct ieee80211_if_sta
*ifsta
)
3410 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3411 struct ieee80211_sta_bss
*bss
;
3412 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3413 struct ieee80211_supported_band
*sband
;
3414 u8 bssid
[ETH_ALEN
], *pos
;
3416 DECLARE_MAC_BUF(mac
);
3419 /* Easier testing, use fixed BSSID. */
3420 memset(bssid
, 0xfe, ETH_ALEN
);
3422 /* Generate random, not broadcast, locally administered BSSID. Mix in
3423 * own MAC address to make sure that devices that do not have proper
3424 * random number generator get different BSSID. */
3425 get_random_bytes(bssid
, ETH_ALEN
);
3426 for (i
= 0; i
< ETH_ALEN
; i
++)
3427 bssid
[i
] ^= dev
->dev_addr
[i
];
3432 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
3433 dev
->name
, print_mac(mac
, bssid
));
3435 bss
= ieee80211_rx_bss_add(dev
, bssid
,
3436 local
->hw
.conf
.channel
->center_freq
,
3437 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
3441 bss
->band
= local
->hw
.conf
.channel
->band
;
3442 sband
= local
->hw
.wiphy
->bands
[bss
->band
];
3444 if (local
->hw
.conf
.beacon_int
== 0)
3445 local
->hw
.conf
.beacon_int
= 10000;
3446 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
3447 bss
->last_update
= jiffies
;
3448 bss
->capability
= WLAN_CAPABILITY_IBSS
;
3449 if (sdata
->default_key
) {
3450 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
3452 sdata
->drop_unencrypted
= 0;
3453 bss
->supp_rates_len
= sband
->n_bitrates
;
3454 pos
= bss
->supp_rates
;
3455 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
3456 int rate
= sband
->bitrates
[i
].bitrate
;
3457 *pos
++ = (u8
) (rate
/ 5);
3460 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3464 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
3465 struct ieee80211_if_sta
*ifsta
)
3467 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3468 struct ieee80211_sta_bss
*bss
;
3472 DECLARE_MAC_BUF(mac
);
3473 DECLARE_MAC_BUF(mac2
);
3475 if (ifsta
->ssid_len
== 0)
3478 active_ibss
= ieee80211_sta_active_ibss(dev
);
3479 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3480 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
3481 dev
->name
, active_ibss
);
3482 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3483 spin_lock_bh(&local
->sta_bss_lock
);
3484 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3485 if (ifsta
->ssid_len
!= bss
->ssid_len
||
3486 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
3487 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
3489 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3490 printk(KERN_DEBUG
" bssid=%s found\n",
3491 print_mac(mac
, bss
->bssid
));
3492 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3493 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
3495 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
3498 spin_unlock_bh(&local
->sta_bss_lock
);
3500 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3501 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
3502 "%s\n", print_mac(mac
, bssid
), print_mac(mac2
, ifsta
->bssid
));
3503 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3504 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
3505 (bss
= ieee80211_rx_bss_get(dev
, bssid
,
3506 local
->hw
.conf
.channel
->center_freq
,
3507 ifsta
->ssid
, ifsta
->ssid_len
))) {
3508 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
3509 " based on configured SSID\n",
3510 dev
->name
, print_mac(mac
, bssid
));
3511 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3513 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3514 printk(KERN_DEBUG
" did not try to join ibss\n");
3515 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3517 /* Selected IBSS not found in current scan results - try to scan */
3518 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3519 !ieee80211_sta_active_ibss(dev
)) {
3520 mod_timer(&ifsta
->timer
, jiffies
+
3521 IEEE80211_IBSS_MERGE_INTERVAL
);
3522 } else if (time_after(jiffies
, local
->last_scan_completed
+
3523 IEEE80211_SCAN_INTERVAL
)) {
3524 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
3525 "join\n", dev
->name
);
3526 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
3528 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
3529 int interval
= IEEE80211_SCAN_INTERVAL
;
3531 if (time_after(jiffies
, ifsta
->ibss_join_req
+
3532 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
3533 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
3534 (!(local
->oper_channel
->flags
&
3535 IEEE80211_CHAN_NO_IBSS
)))
3536 return ieee80211_sta_create_ibss(dev
, ifsta
);
3537 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
3538 printk(KERN_DEBUG
"%s: IBSS not allowed on"
3539 " %d MHz\n", dev
->name
,
3540 local
->hw
.conf
.channel
->center_freq
);
3543 /* No IBSS found - decrease scan interval and continue
3545 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
3548 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3549 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
3557 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
3559 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3560 struct ieee80211_if_sta
*ifsta
;
3562 if (len
> IEEE80211_MAX_SSID_LEN
)
3565 ifsta
= &sdata
->u
.sta
;
3567 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
3568 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
3569 memcpy(ifsta
->ssid
, ssid
, len
);
3570 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
3571 ifsta
->ssid_len
= len
;
3574 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
3576 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
3577 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3578 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
3579 ifsta
->ibss_join_req
= jiffies
;
3580 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3581 return ieee80211_sta_find_ibss(dev
, ifsta
);
3587 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
3589 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3590 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3591 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
3592 *len
= ifsta
->ssid_len
;
3597 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
3599 struct ieee80211_sub_if_data
*sdata
;
3600 struct ieee80211_if_sta
*ifsta
;
3603 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3604 ifsta
= &sdata
->u
.sta
;
3606 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3607 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
3608 res
= ieee80211_if_config(dev
);
3610 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
3611 "the low-level driver\n", dev
->name
);
3616 if (is_valid_ether_addr(bssid
))
3617 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
3619 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
3625 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
3626 struct ieee80211_sub_if_data
*sdata
,
3629 struct sk_buff
*skb
;
3630 struct ieee80211_hdr
*nullfunc
;
3633 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
3635 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
3636 "frame\n", sdata
->dev
->name
);
3639 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3641 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
3642 memset(nullfunc
, 0, 24);
3643 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
3644 IEEE80211_FCTL_TODS
;
3646 fc
|= IEEE80211_FCTL_PM
;
3647 nullfunc
->frame_control
= cpu_to_le16(fc
);
3648 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3649 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
3650 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3652 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
3656 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data
*sdata
)
3658 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
||
3659 ieee80211_vif_is_mesh(&sdata
->vif
))
3660 ieee80211_sta_timer((unsigned long)sdata
);
3663 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
3665 struct ieee80211_local
*local
= hw_to_local(hw
);
3666 struct net_device
*dev
= local
->scan_dev
;
3667 struct ieee80211_sub_if_data
*sdata
;
3668 union iwreq_data wrqu
;
3670 local
->last_scan_completed
= jiffies
;
3671 memset(&wrqu
, 0, sizeof(wrqu
));
3672 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
3674 if (local
->sta_hw_scanning
) {
3675 local
->sta_hw_scanning
= 0;
3676 if (ieee80211_hw_config(local
))
3677 printk(KERN_DEBUG
"%s: failed to restore operational "
3678 "channel after scan\n", dev
->name
);
3679 /* Restart STA timer for HW scan case */
3681 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
)
3682 ieee80211_restart_sta_timer(sdata
);
3688 local
->sta_sw_scanning
= 0;
3689 if (ieee80211_hw_config(local
))
3690 printk(KERN_DEBUG
"%s: failed to restore operational "
3691 "channel after scan\n", dev
->name
);
3694 netif_tx_lock_bh(local
->mdev
);
3695 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
3696 local
->ops
->configure_filter(local_to_hw(local
),
3697 FIF_BCN_PRBRESP_PROMISC
,
3698 &local
->filter_flags
,
3699 local
->mdev
->mc_count
,
3700 local
->mdev
->mc_list
);
3702 netif_tx_unlock_bh(local
->mdev
);
3705 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3707 /* No need to wake the master device. */
3708 if (sdata
->dev
== local
->mdev
)
3711 /* Tell AP we're back */
3712 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3713 sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
3714 ieee80211_send_nullfunc(local
, sdata
, 0);
3716 ieee80211_restart_sta_timer(sdata
);
3718 netif_wake_queue(sdata
->dev
);
3723 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3724 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
3725 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3726 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
3727 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3728 !ieee80211_sta_active_ibss(dev
)))
3729 ieee80211_sta_find_ibss(dev
, ifsta
);
3732 EXPORT_SYMBOL(ieee80211_scan_completed
);
3734 void ieee80211_sta_scan_work(struct work_struct
*work
)
3736 struct ieee80211_local
*local
=
3737 container_of(work
, struct ieee80211_local
, scan_work
.work
);
3738 struct net_device
*dev
= local
->scan_dev
;
3739 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3740 struct ieee80211_supported_band
*sband
;
3741 struct ieee80211_channel
*chan
;
3743 unsigned long next_delay
= 0;
3745 if (!local
->sta_sw_scanning
)
3748 switch (local
->scan_state
) {
3749 case SCAN_SET_CHANNEL
:
3751 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
3752 * after we successfully scanned the last channel of the last
3753 * band (and the last band is supported by the hw)
3755 if (local
->scan_band
< IEEE80211_NUM_BANDS
)
3756 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3761 * If we are at an unsupported band and have more bands
3762 * left to scan, advance to the next supported one.
3764 while (!sband
&& local
->scan_band
< IEEE80211_NUM_BANDS
- 1) {
3766 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3767 local
->scan_channel_idx
= 0;
3770 /* if no more bands/channels left, complete scan */
3771 if (!sband
|| local
->scan_channel_idx
>= sband
->n_channels
) {
3772 ieee80211_scan_completed(local_to_hw(local
));
3776 chan
= &sband
->channels
[local
->scan_channel_idx
];
3778 if (chan
->flags
& IEEE80211_CHAN_DISABLED
||
3779 (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3780 chan
->flags
& IEEE80211_CHAN_NO_IBSS
))
3784 local
->scan_channel
= chan
;
3785 if (ieee80211_hw_config(local
)) {
3786 printk(KERN_DEBUG
"%s: failed to set freq to "
3787 "%d MHz for scan\n", dev
->name
,
3793 /* advance state machine to next channel/band */
3794 local
->scan_channel_idx
++;
3795 if (local
->scan_channel_idx
>= sband
->n_channels
) {
3797 * scan_band may end up == IEEE80211_NUM_BANDS, but
3798 * we'll catch that case above and complete the scan
3799 * if that is the case.
3802 local
->scan_channel_idx
= 0;
3808 next_delay
= IEEE80211_PROBE_DELAY
+
3809 usecs_to_jiffies(local
->hw
.channel_change_time
);
3810 local
->scan_state
= SCAN_SEND_PROBE
;
3812 case SCAN_SEND_PROBE
:
3813 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
3814 local
->scan_state
= SCAN_SET_CHANNEL
;
3816 if (local
->scan_channel
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)
3818 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
3819 local
->scan_ssid_len
);
3820 next_delay
= IEEE80211_CHANNEL_TIME
;
3824 if (local
->sta_sw_scanning
)
3825 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3830 static int ieee80211_sta_start_scan(struct net_device
*dev
,
3831 u8
*ssid
, size_t ssid_len
)
3833 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3834 struct ieee80211_sub_if_data
*sdata
;
3836 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
3839 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
3840 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
3843 * ScanType: ACTIVE, PASSIVE
3844 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
3845 * a Probe frame during active scanning
3847 * MinChannelTime (>= ProbeDelay), in TU
3848 * MaxChannelTime: (>= MinChannelTime), in TU
3851 /* MLME-SCAN.confirm
3853 * ResultCode: SUCCESS, INVALID_PARAMETERS
3856 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3857 if (local
->scan_dev
== dev
)
3862 if (local
->ops
->hw_scan
) {
3863 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
3866 local
->sta_hw_scanning
= 1;
3867 local
->scan_dev
= dev
;
3872 local
->sta_sw_scanning
= 1;
3875 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3877 /* Don't stop the master interface, otherwise we can't transmit
3879 if (sdata
->dev
== local
->mdev
)
3882 netif_stop_queue(sdata
->dev
);
3883 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3884 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
3885 ieee80211_send_nullfunc(local
, sdata
, 1);
3890 local
->scan_ssid_len
= ssid_len
;
3891 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
3893 local
->scan_ssid_len
= 0;
3894 local
->scan_state
= SCAN_SET_CHANNEL
;
3895 local
->scan_channel_idx
= 0;
3896 local
->scan_band
= IEEE80211_BAND_2GHZ
;
3897 local
->scan_dev
= dev
;
3899 netif_tx_lock_bh(local
->mdev
);
3900 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
3901 local
->ops
->configure_filter(local_to_hw(local
),
3902 FIF_BCN_PRBRESP_PROMISC
,
3903 &local
->filter_flags
,
3904 local
->mdev
->mc_count
,
3905 local
->mdev
->mc_list
);
3906 netif_tx_unlock_bh(local
->mdev
);
3908 /* TODO: start scan as soon as all nullfunc frames are ACKed */
3909 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3910 IEEE80211_CHANNEL_TIME
);
3916 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
3918 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3919 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3920 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3922 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3923 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
3925 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3926 if (local
->scan_dev
== dev
)
3931 ifsta
->scan_ssid_len
= ssid_len
;
3933 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
3934 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
3935 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3940 ieee80211_sta_scan_result(struct net_device
*dev
,
3941 struct ieee80211_sta_bss
*bss
,
3942 char *current_ev
, char *end_buf
)
3944 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3945 struct iw_event iwe
;
3947 if (time_after(jiffies
,
3948 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
3951 memset(&iwe
, 0, sizeof(iwe
));
3952 iwe
.cmd
= SIOCGIWAP
;
3953 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
3954 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
3955 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3958 memset(&iwe
, 0, sizeof(iwe
));
3959 iwe
.cmd
= SIOCGIWESSID
;
3960 if (bss_mesh_cfg(bss
)) {
3961 iwe
.u
.data
.length
= bss_mesh_id_len(bss
);
3962 iwe
.u
.data
.flags
= 1;
3963 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3966 iwe
.u
.data
.length
= bss
->ssid_len
;
3967 iwe
.u
.data
.flags
= 1;
3968 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3972 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)
3973 || bss_mesh_cfg(bss
)) {
3974 memset(&iwe
, 0, sizeof(iwe
));
3975 iwe
.cmd
= SIOCGIWMODE
;
3976 if (bss_mesh_cfg(bss
))
3977 iwe
.u
.mode
= IW_MODE_MESH
;
3978 else if (bss
->capability
& WLAN_CAPABILITY_ESS
)
3979 iwe
.u
.mode
= IW_MODE_MASTER
;
3981 iwe
.u
.mode
= IW_MODE_ADHOC
;
3982 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3986 memset(&iwe
, 0, sizeof(iwe
));
3987 iwe
.cmd
= SIOCGIWFREQ
;
3988 iwe
.u
.freq
.m
= bss
->freq
;
3990 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3993 memset(&iwe
, 0, sizeof(iwe
));
3994 iwe
.cmd
= SIOCGIWFREQ
;
3995 iwe
.u
.freq
.m
= ieee80211_frequency_to_channel(bss
->freq
);
3997 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
4000 memset(&iwe
, 0, sizeof(iwe
));
4002 iwe
.u
.qual
.qual
= bss
->signal
;
4003 iwe
.u
.qual
.level
= bss
->rssi
;
4004 iwe
.u
.qual
.noise
= bss
->noise
;
4005 iwe
.u
.qual
.updated
= local
->wstats_flags
;
4006 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
4009 memset(&iwe
, 0, sizeof(iwe
));
4010 iwe
.cmd
= SIOCGIWENCODE
;
4011 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
4012 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
4014 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
4015 iwe
.u
.data
.length
= 0;
4016 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
4018 if (bss
&& bss
->wpa_ie
) {
4019 memset(&iwe
, 0, sizeof(iwe
));
4020 iwe
.cmd
= IWEVGENIE
;
4021 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
4022 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
4026 if (bss
&& bss
->rsn_ie
) {
4027 memset(&iwe
, 0, sizeof(iwe
));
4028 iwe
.cmd
= IWEVGENIE
;
4029 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
4030 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
4034 if (bss
&& bss
->supp_rates_len
> 0) {
4035 /* display all supported rates in readable format */
4036 char *p
= current_ev
+ IW_EV_LCP_LEN
;
4039 memset(&iwe
, 0, sizeof(iwe
));
4040 iwe
.cmd
= SIOCGIWRATE
;
4041 /* Those two flags are ignored... */
4042 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
4044 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
4045 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
4047 p
= iwe_stream_add_value(current_ev
, p
,
4048 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
4055 buf
= kmalloc(30, GFP_ATOMIC
);
4057 memset(&iwe
, 0, sizeof(iwe
));
4058 iwe
.cmd
= IWEVCUSTOM
;
4059 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
4060 iwe
.u
.data
.length
= strlen(buf
);
4061 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4067 if (bss_mesh_cfg(bss
)) {
4069 u8
*cfg
= bss_mesh_cfg(bss
);
4070 buf
= kmalloc(50, GFP_ATOMIC
);
4072 memset(&iwe
, 0, sizeof(iwe
));
4073 iwe
.cmd
= IWEVCUSTOM
;
4074 sprintf(buf
, "Mesh network (version %d)", cfg
[0]);
4075 iwe
.u
.data
.length
= strlen(buf
);
4076 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4078 sprintf(buf
, "Path Selection Protocol ID: "
4079 "0x%02X%02X%02X%02X", cfg
[1], cfg
[2], cfg
[3],
4081 iwe
.u
.data
.length
= strlen(buf
);
4082 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4084 sprintf(buf
, "Path Selection Metric ID: "
4085 "0x%02X%02X%02X%02X", cfg
[5], cfg
[6], cfg
[7],
4087 iwe
.u
.data
.length
= strlen(buf
);
4088 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4090 sprintf(buf
, "Congestion Control Mode ID: "
4091 "0x%02X%02X%02X%02X", cfg
[9], cfg
[10],
4093 iwe
.u
.data
.length
= strlen(buf
);
4094 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4096 sprintf(buf
, "Channel Precedence: "
4097 "0x%02X%02X%02X%02X", cfg
[13], cfg
[14],
4099 iwe
.u
.data
.length
= strlen(buf
);
4100 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4110 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
4112 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4113 char *current_ev
= buf
;
4114 char *end_buf
= buf
+ len
;
4115 struct ieee80211_sta_bss
*bss
;
4117 spin_lock_bh(&local
->sta_bss_lock
);
4118 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
4119 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
4120 spin_unlock_bh(&local
->sta_bss_lock
);
4123 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
4126 spin_unlock_bh(&local
->sta_bss_lock
);
4127 return current_ev
- buf
;
4131 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
4133 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4134 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4135 kfree(ifsta
->extra_ie
);
4137 ifsta
->extra_ie
= NULL
;
4138 ifsta
->extra_ie_len
= 0;
4141 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
4142 if (!ifsta
->extra_ie
) {
4143 ifsta
->extra_ie_len
= 0;
4146 memcpy(ifsta
->extra_ie
, ie
, len
);
4147 ifsta
->extra_ie_len
= len
;
4152 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
4153 struct sk_buff
*skb
, u8
*bssid
,
4156 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4157 struct sta_info
*sta
;
4158 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4159 DECLARE_MAC_BUF(mac
);
4161 /* TODO: Could consider removing the least recently used entry and
4162 * allow new one to be added. */
4163 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
4164 if (net_ratelimit()) {
4165 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
4166 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
4171 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
4172 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
4174 sta
= sta_info_alloc(sdata
, addr
, GFP_ATOMIC
);
4178 sta
->flags
|= WLAN_STA_AUTHORIZED
;
4180 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] =
4181 sdata
->u
.sta
.supp_rates_bits
[local
->hw
.conf
.channel
->band
];
4183 rate_control_rate_init(sta
, local
);
4185 if (sta_info_insert(sta
))
4192 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
4194 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4195 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4197 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
4200 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
4201 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
4204 ieee80211_send_deauth(dev
, ifsta
, reason
);
4205 ieee80211_set_disassoc(dev
, ifsta
, 1);
4210 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
4212 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4213 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4215 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
4218 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4221 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
4224 ieee80211_send_disassoc(dev
, ifsta
, reason
);
4225 ieee80211_set_disassoc(dev
, ifsta
, 0);
4229 void ieee80211_notify_mac(struct ieee80211_hw
*hw
,
4230 enum ieee80211_notification_types notif_type
)
4232 struct ieee80211_local
*local
= hw_to_local(hw
);
4233 struct ieee80211_sub_if_data
*sdata
;
4235 switch (notif_type
) {
4236 case IEEE80211_NOTIFY_RE_ASSOC
:
4238 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
4240 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
) {
4241 ieee80211_sta_req_auth(sdata
->dev
,
4250 EXPORT_SYMBOL(ieee80211_notify_mac
);