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"
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 (7 * 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
);
353 static u32
ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data
*sdata
,
355 bool use_short_preamble
)
357 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
358 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
359 DECLARE_MAC_BUF(mac
);
362 if (use_protection
!= bss_conf
->use_cts_prot
) {
363 if (net_ratelimit()) {
364 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
367 use_protection
? "enabled" : "disabled",
368 print_mac(mac
, ifsta
->bssid
));
370 bss_conf
->use_cts_prot
= use_protection
;
371 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
374 if (use_short_preamble
!= bss_conf
->use_short_preamble
) {
375 if (net_ratelimit()) {
376 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
379 use_short_preamble
? "short" : "long",
380 print_mac(mac
, ifsta
->bssid
));
382 bss_conf
->use_short_preamble
= use_short_preamble
;
383 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
389 static u32
ieee80211_handle_erp_ie(struct ieee80211_sub_if_data
*sdata
,
392 bool use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
393 bool use_short_preamble
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) == 0;
395 return ieee80211_handle_protect_preamb(sdata
,
396 use_protection
, use_short_preamble
);
399 static u32
ieee80211_handle_bss_capability(struct ieee80211_sub_if_data
*sdata
,
400 struct ieee80211_sta_bss
*bss
)
404 if (bss
->has_erp_value
)
405 changed
|= ieee80211_handle_erp_ie(sdata
, bss
->erp_value
);
407 u16 capab
= bss
->capability
;
408 changed
|= ieee80211_handle_protect_preamb(sdata
, false,
409 (capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
) != 0);
415 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap
*ht_cap_ie
,
416 struct ieee80211_ht_info
*ht_info
)
422 memset(ht_info
, 0, sizeof(*ht_info
));
425 u8 ampdu_info
= ht_cap_ie
->ampdu_params_info
;
427 ht_info
->ht_supported
= 1;
428 ht_info
->cap
= le16_to_cpu(ht_cap_ie
->cap_info
);
429 ht_info
->ampdu_factor
=
430 ampdu_info
& IEEE80211_HT_CAP_AMPDU_FACTOR
;
431 ht_info
->ampdu_density
=
432 (ampdu_info
& IEEE80211_HT_CAP_AMPDU_DENSITY
) >> 2;
433 memcpy(ht_info
->supp_mcs_set
, ht_cap_ie
->supp_mcs_set
, 16);
435 ht_info
->ht_supported
= 0;
440 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
441 struct ieee80211_ht_addt_info
*ht_add_info_ie
,
442 struct ieee80211_ht_bss_info
*bss_info
)
444 if (bss_info
== NULL
)
447 memset(bss_info
, 0, sizeof(*bss_info
));
449 if (ht_add_info_ie
) {
451 op_mode
= le16_to_cpu(ht_add_info_ie
->operation_mode
);
453 bss_info
->primary_channel
= ht_add_info_ie
->control_chan
;
454 bss_info
->bss_cap
= ht_add_info_ie
->ht_param
;
455 bss_info
->bss_op_mode
= (u8
)(op_mode
& 0xff);
461 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
462 struct ieee80211_if_sta
*ifsta
)
467 union iwreq_data wrqu
;
469 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
472 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
473 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
477 len
= sprintf(buf
, "ASSOCINFO(");
478 if (ifsta
->assocreq_ies
) {
479 len
+= sprintf(buf
+ len
, "ReqIEs=");
480 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
481 len
+= sprintf(buf
+ len
, "%02x",
482 ifsta
->assocreq_ies
[i
]);
485 if (ifsta
->assocresp_ies
) {
486 if (ifsta
->assocreq_ies
)
487 len
+= sprintf(buf
+ len
, " ");
488 len
+= sprintf(buf
+ len
, "RespIEs=");
489 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
490 len
+= sprintf(buf
+ len
, "%02x",
491 ifsta
->assocresp_ies
[i
]);
494 len
+= sprintf(buf
+ len
, ")");
496 if (len
> IW_CUSTOM_MAX
) {
497 len
= sprintf(buf
, "ASSOCRESPIE=");
498 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
499 len
+= sprintf(buf
+ len
, "%02x",
500 ifsta
->assocresp_ies
[i
]);
504 memset(&wrqu
, 0, sizeof(wrqu
));
505 wrqu
.data
.length
= len
;
506 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
512 static void ieee80211_set_associated(struct net_device
*dev
,
513 struct ieee80211_if_sta
*ifsta
,
516 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
517 struct ieee80211_local
*local
= sdata
->local
;
518 struct ieee80211_conf
*conf
= &local_to_hw(local
)->conf
;
519 union iwreq_data wrqu
;
520 u32 changed
= BSS_CHANGED_ASSOC
;
523 struct ieee80211_sta_bss
*bss
;
525 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
527 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
530 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
531 conf
->channel
->center_freq
,
532 ifsta
->ssid
, ifsta
->ssid_len
);
534 /* set timing information */
535 sdata
->bss_conf
.beacon_int
= bss
->beacon_int
;
536 sdata
->bss_conf
.timestamp
= bss
->timestamp
;
538 changed
|= ieee80211_handle_bss_capability(sdata
, bss
);
540 ieee80211_rx_bss_put(dev
, bss
);
543 if (conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
544 changed
|= BSS_CHANGED_HT
;
545 sdata
->bss_conf
.assoc_ht
= 1;
546 sdata
->bss_conf
.ht_conf
= &conf
->ht_conf
;
547 sdata
->bss_conf
.ht_bss_conf
= &conf
->ht_bss_conf
;
550 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
551 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
552 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
553 ieee80211_sta_send_associnfo(dev
, ifsta
);
555 netif_carrier_off(dev
);
556 ieee80211_sta_tear_down_BA_sessions(dev
, ifsta
->bssid
);
557 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
558 ieee80211_reset_erp_info(dev
);
560 sdata
->bss_conf
.assoc_ht
= 0;
561 sdata
->bss_conf
.ht_conf
= NULL
;
562 sdata
->bss_conf
.ht_bss_conf
= NULL
;
564 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
566 ifsta
->last_probe
= jiffies
;
567 ieee80211_led_assoc(local
, assoc
);
569 sdata
->bss_conf
.assoc
= assoc
;
570 ieee80211_bss_info_change_notify(sdata
, changed
);
573 netif_carrier_on(dev
);
575 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
576 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
579 static void ieee80211_set_disassoc(struct net_device
*dev
,
580 struct ieee80211_if_sta
*ifsta
, int deauth
)
583 ifsta
->auth_tries
= 0;
584 ifsta
->assoc_tries
= 0;
585 ieee80211_set_associated(dev
, ifsta
, 0);
588 void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
591 struct ieee80211_sub_if_data
*sdata
;
592 struct ieee80211_tx_packet_data
*pkt_data
;
594 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
595 skb
->dev
= sdata
->local
->mdev
;
596 skb_set_mac_header(skb
, 0);
597 skb_set_network_header(skb
, 0);
598 skb_set_transport_header(skb
, 0);
600 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
601 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
602 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
604 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
610 static void ieee80211_send_auth(struct net_device
*dev
,
611 struct ieee80211_if_sta
*ifsta
,
612 int transaction
, u8
*extra
, size_t extra_len
,
615 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
617 struct ieee80211_mgmt
*mgmt
;
619 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
620 sizeof(*mgmt
) + 6 + extra_len
);
622 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
623 "frame\n", dev
->name
);
626 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
628 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
629 memset(mgmt
, 0, 24 + 6);
630 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
631 IEEE80211_STYPE_AUTH
);
633 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
634 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
635 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
636 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
637 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
638 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
639 ifsta
->auth_transaction
= transaction
+ 1;
640 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
642 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
644 ieee80211_sta_tx(dev
, skb
, encrypt
);
648 static void ieee80211_authenticate(struct net_device
*dev
,
649 struct ieee80211_if_sta
*ifsta
)
651 DECLARE_MAC_BUF(mac
);
654 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
655 printk(KERN_DEBUG
"%s: authentication with AP %s"
657 dev
->name
, print_mac(mac
, ifsta
->bssid
));
658 ifsta
->state
= IEEE80211_DISABLED
;
662 ifsta
->state
= IEEE80211_AUTHENTICATE
;
663 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
664 dev
->name
, print_mac(mac
, ifsta
->bssid
));
666 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
668 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
671 static int ieee80211_compatible_rates(struct ieee80211_sta_bss
*bss
,
672 struct ieee80211_supported_band
*sband
,
678 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
679 int rate
= (bss
->supp_rates
[i
] & 0x7F) * 5;
681 for (j
= 0; j
< sband
->n_bitrates
; j
++)
682 if (sband
->bitrates
[j
].bitrate
== rate
) {
692 static void ieee80211_send_assoc(struct net_device
*dev
,
693 struct ieee80211_if_sta
*ifsta
)
695 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
697 struct ieee80211_mgmt
*mgmt
;
699 int i
, len
, count
, rates_len
, supp_rates_len
;
701 struct ieee80211_sta_bss
*bss
;
703 struct ieee80211_supported_band
*sband
;
706 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
707 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
710 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
711 "frame\n", dev
->name
);
714 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
716 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
718 capab
= ifsta
->capab
;
720 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
) {
721 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
))
722 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
723 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
))
724 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
727 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
728 local
->hw
.conf
.channel
->center_freq
,
729 ifsta
->ssid
, ifsta
->ssid_len
);
731 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
732 capab
|= WLAN_CAPABILITY_PRIVACY
;
737 /* get all rates supported by the device and the AP as
738 * some APs don't like getting a superset of their rates
739 * in the association request (e.g. D-Link DAP 1353 in
741 rates_len
= ieee80211_compatible_rates(bss
, sband
, &rates
);
743 ieee80211_rx_bss_put(dev
, bss
);
746 rates_len
= sband
->n_bitrates
;
749 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
751 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
752 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
753 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
755 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
757 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
758 IEEE80211_STYPE_REASSOC_REQ
);
759 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
760 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
761 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
765 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
766 IEEE80211_STYPE_ASSOC_REQ
);
767 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
768 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
772 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
773 *pos
++ = WLAN_EID_SSID
;
774 *pos
++ = ifsta
->ssid_len
;
775 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
777 /* add all rates which were marked to be used above */
778 supp_rates_len
= rates_len
;
779 if (supp_rates_len
> 8)
782 len
= sband
->n_bitrates
;
783 pos
= skb_put(skb
, supp_rates_len
+ 2);
784 *pos
++ = WLAN_EID_SUPP_RATES
;
785 *pos
++ = supp_rates_len
;
788 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
789 if (BIT(i
) & rates
) {
790 int rate
= sband
->bitrates
[i
].bitrate
;
791 *pos
++ = (u8
) (rate
/ 5);
798 pos
= skb_put(skb
, rates_len
- count
+ 2);
799 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
800 *pos
++ = rates_len
- count
;
802 for (i
++; i
< sband
->n_bitrates
; i
++) {
803 if (BIT(i
) & rates
) {
804 int rate
= sband
->bitrates
[i
].bitrate
;
805 *pos
++ = (u8
) (rate
/ 5);
810 if (ifsta
->extra_ie
) {
811 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
812 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
815 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
816 pos
= skb_put(skb
, 9);
817 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
818 *pos
++ = 7; /* len */
819 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
822 *pos
++ = 2; /* WME */
823 *pos
++ = 0; /* WME info */
824 *pos
++ = 1; /* WME ver */
827 /* wmm support is a must to HT */
828 if (wmm
&& sband
->ht_info
.ht_supported
) {
829 __le16 tmp
= cpu_to_le16(sband
->ht_info
.cap
);
830 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
)+2);
831 *pos
++ = WLAN_EID_HT_CAPABILITY
;
832 *pos
++ = sizeof(struct ieee80211_ht_cap
);
833 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
834 memcpy(pos
, &tmp
, sizeof(u16
));
836 /* TODO: needs a define here for << 2 */
837 *pos
++ = sband
->ht_info
.ampdu_factor
|
838 (sband
->ht_info
.ampdu_density
<< 2);
839 memcpy(pos
, sband
->ht_info
.supp_mcs_set
, 16);
842 kfree(ifsta
->assocreq_ies
);
843 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
844 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
845 if (ifsta
->assocreq_ies
)
846 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
848 ieee80211_sta_tx(dev
, skb
, 0);
852 static void ieee80211_send_deauth(struct net_device
*dev
,
853 struct ieee80211_if_sta
*ifsta
, u16 reason
)
855 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
857 struct ieee80211_mgmt
*mgmt
;
859 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
861 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
862 "frame\n", dev
->name
);
865 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
867 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
869 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
870 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
871 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
872 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
873 IEEE80211_STYPE_DEAUTH
);
875 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
877 ieee80211_sta_tx(dev
, skb
, 0);
881 static void ieee80211_send_disassoc(struct net_device
*dev
,
882 struct ieee80211_if_sta
*ifsta
, u16 reason
)
884 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
886 struct ieee80211_mgmt
*mgmt
;
888 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
890 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
891 "frame\n", dev
->name
);
894 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
896 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
898 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
899 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
900 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
901 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
902 IEEE80211_STYPE_DISASSOC
);
904 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
906 ieee80211_sta_tx(dev
, skb
, 0);
910 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
911 struct ieee80211_if_sta
*ifsta
)
913 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
914 struct ieee80211_sta_bss
*bss
;
919 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
922 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
923 local
->hw
.conf
.channel
->center_freq
,
924 ifsta
->ssid
, ifsta
->ssid_len
);
928 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
929 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
930 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
932 ieee80211_rx_bss_put(dev
, bss
);
934 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
941 static void ieee80211_associate(struct net_device
*dev
,
942 struct ieee80211_if_sta
*ifsta
)
944 DECLARE_MAC_BUF(mac
);
946 ifsta
->assoc_tries
++;
947 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
948 printk(KERN_DEBUG
"%s: association with AP %s"
950 dev
->name
, print_mac(mac
, ifsta
->bssid
));
951 ifsta
->state
= IEEE80211_DISABLED
;
955 ifsta
->state
= IEEE80211_ASSOCIATE
;
956 printk(KERN_DEBUG
"%s: associate with AP %s\n",
957 dev
->name
, print_mac(mac
, ifsta
->bssid
));
958 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
959 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
960 "mixed-cell disabled - abort association\n", dev
->name
);
961 ifsta
->state
= IEEE80211_DISABLED
;
965 ieee80211_send_assoc(dev
, ifsta
);
967 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
971 static void ieee80211_associated(struct net_device
*dev
,
972 struct ieee80211_if_sta
*ifsta
)
974 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
975 struct sta_info
*sta
;
977 DECLARE_MAC_BUF(mac
);
979 /* TODO: start monitoring current AP signal quality and number of
980 * missed beacons. Scan other channels every now and then and search
982 /* TODO: remove expired BSSes */
984 ifsta
->state
= IEEE80211_ASSOCIATED
;
988 sta
= sta_info_get(local
, ifsta
->bssid
);
990 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
991 dev
->name
, print_mac(mac
, ifsta
->bssid
));
995 if (time_after(jiffies
,
996 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
997 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
998 printk(KERN_DEBUG
"%s: No ProbeResp from "
999 "current AP %s - assume out of "
1001 dev
->name
, print_mac(mac
, ifsta
->bssid
));
1003 sta_info_unlink(&sta
);
1005 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
1007 local
->scan_ssid_len
);
1008 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
1010 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
1011 if (time_after(jiffies
, ifsta
->last_probe
+
1012 IEEE80211_PROBE_INTERVAL
)) {
1013 ifsta
->last_probe
= jiffies
;
1014 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
1023 if (disassoc
&& sta
)
1024 sta_info_destroy(sta
);
1027 ifsta
->state
= IEEE80211_DISABLED
;
1028 ieee80211_set_associated(dev
, ifsta
, 0);
1030 mod_timer(&ifsta
->timer
, jiffies
+
1031 IEEE80211_MONITORING_INTERVAL
);
1036 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
1037 u8
*ssid
, size_t ssid_len
)
1039 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1040 struct ieee80211_supported_band
*sband
;
1041 struct sk_buff
*skb
;
1042 struct ieee80211_mgmt
*mgmt
;
1043 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
1046 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
1048 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
1049 "request\n", dev
->name
);
1052 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1054 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1055 memset(mgmt
, 0, 24);
1056 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1057 IEEE80211_STYPE_PROBE_REQ
);
1058 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1060 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
1061 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
1063 memset(mgmt
->da
, 0xff, ETH_ALEN
);
1064 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
1066 pos
= skb_put(skb
, 2 + ssid_len
);
1067 *pos
++ = WLAN_EID_SSID
;
1069 memcpy(pos
, ssid
, ssid_len
);
1071 supp_rates
= skb_put(skb
, 2);
1072 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
1074 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
1076 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
1077 struct ieee80211_rate
*rate
= &sband
->bitrates
[i
];
1079 pos
= skb_put(skb
, 1);
1081 } else if (supp_rates
[1] == 8) {
1082 esupp_rates
= skb_put(skb
, 3);
1083 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
1085 pos
= &esupp_rates
[2];
1087 pos
= skb_put(skb
, 1);
1090 *pos
= rate
->bitrate
/ 5;
1093 ieee80211_sta_tx(dev
, skb
, 0);
1097 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
1099 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1100 if (!sdata
|| !sdata
->default_key
||
1101 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
1107 static void ieee80211_auth_completed(struct net_device
*dev
,
1108 struct ieee80211_if_sta
*ifsta
)
1110 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
1111 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
1112 ieee80211_associate(dev
, ifsta
);
1116 static void ieee80211_auth_challenge(struct net_device
*dev
,
1117 struct ieee80211_if_sta
*ifsta
,
1118 struct ieee80211_mgmt
*mgmt
,
1122 struct ieee802_11_elems elems
;
1124 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
1125 pos
= mgmt
->u
.auth
.variable
;
1126 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1127 if (!elems
.challenge
) {
1128 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
1129 "frame\n", dev
->name
);
1132 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
1133 elems
.challenge_len
+ 2, 1);
1136 static void ieee80211_send_addba_resp(struct net_device
*dev
, u8
*da
, u16 tid
,
1137 u8 dialog_token
, u16 status
, u16 policy
,
1138 u16 buf_size
, u16 timeout
)
1140 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1141 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1142 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1143 struct sk_buff
*skb
;
1144 struct ieee80211_mgmt
*mgmt
;
1147 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1148 sizeof(mgmt
->u
.action
.u
.addba_resp
));
1150 printk(KERN_DEBUG
"%s: failed to allocate buffer "
1151 "for addba resp frame\n", dev
->name
);
1155 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1156 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1157 memset(mgmt
, 0, 24);
1158 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1159 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1160 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1161 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1163 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1164 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1165 IEEE80211_STYPE_ACTION
);
1167 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
1168 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1169 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
1170 mgmt
->u
.action
.u
.addba_resp
.dialog_token
= dialog_token
;
1172 capab
= (u16
)(policy
<< 1); /* bit 1 aggregation policy */
1173 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1174 capab
|= (u16
)(buf_size
<< 6); /* bit 15:6 max size of aggregation */
1176 mgmt
->u
.action
.u
.addba_resp
.capab
= cpu_to_le16(capab
);
1177 mgmt
->u
.action
.u
.addba_resp
.timeout
= cpu_to_le16(timeout
);
1178 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
1180 ieee80211_sta_tx(dev
, skb
, 0);
1185 void ieee80211_send_addba_request(struct net_device
*dev
, const u8
*da
,
1186 u16 tid
, u8 dialog_token
, u16 start_seq_num
,
1187 u16 agg_size
, u16 timeout
)
1189 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1190 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1191 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1192 struct sk_buff
*skb
;
1193 struct ieee80211_mgmt
*mgmt
;
1196 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1197 sizeof(mgmt
->u
.action
.u
.addba_req
));
1201 printk(KERN_ERR
"%s: failed to allocate buffer "
1202 "for addba request frame\n", dev
->name
);
1205 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1206 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1207 memset(mgmt
, 0, 24);
1208 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1209 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1210 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1211 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1213 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1215 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1216 IEEE80211_STYPE_ACTION
);
1218 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_req
));
1220 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1221 mgmt
->u
.action
.u
.addba_req
.action_code
= WLAN_ACTION_ADDBA_REQ
;
1223 mgmt
->u
.action
.u
.addba_req
.dialog_token
= dialog_token
;
1224 capab
= (u16
)(1 << 1); /* bit 1 aggregation policy */
1225 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1226 capab
|= (u16
)(agg_size
<< 6); /* bit 15:6 max size of aggergation */
1228 mgmt
->u
.action
.u
.addba_req
.capab
= cpu_to_le16(capab
);
1230 mgmt
->u
.action
.u
.addba_req
.timeout
= cpu_to_le16(timeout
);
1231 mgmt
->u
.action
.u
.addba_req
.start_seq_num
=
1232 cpu_to_le16(start_seq_num
<< 4);
1234 ieee80211_sta_tx(dev
, skb
, 0);
1237 static void ieee80211_sta_process_addba_request(struct net_device
*dev
,
1238 struct ieee80211_mgmt
*mgmt
,
1241 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1242 struct ieee80211_hw
*hw
= &local
->hw
;
1243 struct ieee80211_conf
*conf
= &hw
->conf
;
1244 struct sta_info
*sta
;
1245 struct tid_ampdu_rx
*tid_agg_rx
;
1246 u16 capab
, tid
, timeout
, ba_policy
, buf_size
, start_seq_num
, status
;
1248 int ret
= -EOPNOTSUPP
;
1249 DECLARE_MAC_BUF(mac
);
1253 sta
= sta_info_get(local
, mgmt
->sa
);
1259 /* extract session parameters from addba request frame */
1260 dialog_token
= mgmt
->u
.action
.u
.addba_req
.dialog_token
;
1261 timeout
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.timeout
);
1263 le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.start_seq_num
) >> 4;
1265 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.capab
);
1266 ba_policy
= (capab
& IEEE80211_ADDBA_PARAM_POLICY_MASK
) >> 1;
1267 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1268 buf_size
= (capab
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
) >> 6;
1270 status
= WLAN_STATUS_REQUEST_DECLINED
;
1272 /* sanity check for incoming parameters:
1273 * check if configuration can support the BA policy
1274 * and if buffer size does not exceeds max value */
1275 if (((ba_policy
!= 1)
1276 && (!(conf
->ht_conf
.cap
& IEEE80211_HT_CAP_DELAY_BA
)))
1277 || (buf_size
> IEEE80211_MAX_AMPDU_BUF
)) {
1278 status
= WLAN_STATUS_INVALID_QOS_PARAM
;
1279 #ifdef CONFIG_MAC80211_HT_DEBUG
1280 if (net_ratelimit())
1281 printk(KERN_DEBUG
"AddBA Req with bad params from "
1282 "%s on tid %u. policy %d, buffer size %d\n",
1283 print_mac(mac
, mgmt
->sa
), tid
, ba_policy
,
1285 #endif /* CONFIG_MAC80211_HT_DEBUG */
1288 /* determine default buffer size */
1289 if (buf_size
== 0) {
1290 struct ieee80211_supported_band
*sband
;
1292 sband
= local
->hw
.wiphy
->bands
[conf
->channel
->band
];
1293 buf_size
= IEEE80211_MIN_AMPDU_BUF
;
1294 buf_size
= buf_size
<< sband
->ht_info
.ampdu_factor
;
1298 /* examine state machine */
1299 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1301 if (sta
->ampdu_mlme
.tid_state_rx
[tid
] != HT_AGG_STATE_IDLE
) {
1302 #ifdef CONFIG_MAC80211_HT_DEBUG
1303 if (net_ratelimit())
1304 printk(KERN_DEBUG
"unexpected AddBA Req from "
1306 print_mac(mac
, mgmt
->sa
), tid
);
1307 #endif /* CONFIG_MAC80211_HT_DEBUG */
1311 /* prepare A-MPDU MLME for Rx aggregation */
1312 sta
->ampdu_mlme
.tid_rx
[tid
] =
1313 kmalloc(sizeof(struct tid_ampdu_rx
), GFP_ATOMIC
);
1314 if (!sta
->ampdu_mlme
.tid_rx
[tid
]) {
1315 if (net_ratelimit())
1316 printk(KERN_ERR
"allocate rx mlme to tid %d failed\n",
1321 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.function
=
1322 sta_rx_agg_session_timer_expired
;
1323 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.data
=
1324 (unsigned long)&sta
->timer_to_tid
[tid
];
1325 init_timer(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1327 tid_agg_rx
= sta
->ampdu_mlme
.tid_rx
[tid
];
1329 /* prepare reordering buffer */
1330 tid_agg_rx
->reorder_buf
=
1331 kmalloc(buf_size
* sizeof(struct sk_buff
*), GFP_ATOMIC
);
1332 if (!tid_agg_rx
->reorder_buf
) {
1333 if (net_ratelimit())
1334 printk(KERN_ERR
"can not allocate reordering buffer "
1335 "to tid %d\n", tid
);
1336 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1339 memset(tid_agg_rx
->reorder_buf
, 0,
1340 buf_size
* sizeof(struct sk_buff
*));
1342 if (local
->ops
->ampdu_action
)
1343 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_START
,
1344 sta
->addr
, tid
, &start_seq_num
);
1345 #ifdef CONFIG_MAC80211_HT_DEBUG
1346 printk(KERN_DEBUG
"Rx A-MPDU request on tid %d result %d\n", tid
, ret
);
1347 #endif /* CONFIG_MAC80211_HT_DEBUG */
1350 kfree(tid_agg_rx
->reorder_buf
);
1352 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1356 /* change state and send addba resp */
1357 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_OPERATIONAL
;
1358 tid_agg_rx
->dialog_token
= dialog_token
;
1359 tid_agg_rx
->ssn
= start_seq_num
;
1360 tid_agg_rx
->head_seq_num
= start_seq_num
;
1361 tid_agg_rx
->buf_size
= buf_size
;
1362 tid_agg_rx
->timeout
= timeout
;
1363 tid_agg_rx
->stored_mpdu_num
= 0;
1364 status
= WLAN_STATUS_SUCCESS
;
1366 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1369 ieee80211_send_addba_resp(sta
->sdata
->dev
, sta
->addr
, tid
,
1370 dialog_token
, status
, 1, buf_size
, timeout
);
1374 static void ieee80211_sta_process_addba_resp(struct net_device
*dev
,
1375 struct ieee80211_mgmt
*mgmt
,
1378 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1379 struct ieee80211_hw
*hw
= &local
->hw
;
1380 struct sta_info
*sta
;
1387 sta
= sta_info_get(local
, mgmt
->sa
);
1393 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.capab
);
1394 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1396 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1398 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1400 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1401 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1402 printk(KERN_DEBUG
"state not HT_ADDBA_REQUESTED_MSK:"
1404 goto addba_resp_exit
;
1407 if (mgmt
->u
.action
.u
.addba_resp
.dialog_token
!=
1408 sta
->ampdu_mlme
.tid_tx
[tid
]->dialog_token
) {
1409 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1410 #ifdef CONFIG_MAC80211_HT_DEBUG
1411 printk(KERN_DEBUG
"wrong addBA response token, tid %d\n", tid
);
1412 #endif /* CONFIG_MAC80211_HT_DEBUG */
1413 goto addba_resp_exit
;
1416 del_timer_sync(&sta
->ampdu_mlme
.tid_tx
[tid
]->addba_resp_timer
);
1417 #ifdef CONFIG_MAC80211_HT_DEBUG
1418 printk(KERN_DEBUG
"switched off addBA timer for tid %d \n", tid
);
1419 #endif /* CONFIG_MAC80211_HT_DEBUG */
1420 if (le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.status
)
1421 == WLAN_STATUS_SUCCESS
) {
1422 if (*state
& HT_ADDBA_RECEIVED_MSK
)
1423 printk(KERN_DEBUG
"double addBA response\n");
1425 *state
|= HT_ADDBA_RECEIVED_MSK
;
1426 sta
->ampdu_mlme
.addba_req_num
[tid
] = 0;
1428 if (*state
== HT_AGG_STATE_OPERATIONAL
) {
1429 printk(KERN_DEBUG
"Aggregation on for tid %d \n", tid
);
1430 ieee80211_wake_queue(hw
, sta
->tid_to_tx_q
[tid
]);
1433 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1434 printk(KERN_DEBUG
"recipient accepted agg: tid %d \n", tid
);
1436 printk(KERN_DEBUG
"recipient rejected agg: tid %d \n", tid
);
1438 sta
->ampdu_mlme
.addba_req_num
[tid
]++;
1439 /* this will allow the state check in stop_BA_session */
1440 *state
= HT_AGG_STATE_OPERATIONAL
;
1441 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1442 ieee80211_stop_tx_ba_session(hw
, sta
->addr
, tid
,
1443 WLAN_BACK_INITIATOR
);
1450 void ieee80211_send_delba(struct net_device
*dev
, const u8
*da
, u16 tid
,
1451 u16 initiator
, u16 reason_code
)
1453 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1454 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1455 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1456 struct sk_buff
*skb
;
1457 struct ieee80211_mgmt
*mgmt
;
1460 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1461 sizeof(mgmt
->u
.action
.u
.delba
));
1464 printk(KERN_ERR
"%s: failed to allocate buffer "
1465 "for delba frame\n", dev
->name
);
1469 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1470 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1471 memset(mgmt
, 0, 24);
1472 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1473 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1474 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1475 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1477 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1478 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1479 IEEE80211_STYPE_ACTION
);
1481 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.delba
));
1483 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1484 mgmt
->u
.action
.u
.delba
.action_code
= WLAN_ACTION_DELBA
;
1485 params
= (u16
)(initiator
<< 11); /* bit 11 initiator */
1486 params
|= (u16
)(tid
<< 12); /* bit 15:12 TID number */
1488 mgmt
->u
.action
.u
.delba
.params
= cpu_to_le16(params
);
1489 mgmt
->u
.action
.u
.delba
.reason_code
= cpu_to_le16(reason_code
);
1491 ieee80211_sta_tx(dev
, skb
, 0);
1494 void ieee80211_sta_stop_rx_ba_session(struct net_device
*dev
, u8
*ra
, u16 tid
,
1495 u16 initiator
, u16 reason
)
1497 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1498 struct ieee80211_hw
*hw
= &local
->hw
;
1499 struct sta_info
*sta
;
1501 DECLARE_MAC_BUF(mac
);
1505 sta
= sta_info_get(local
, ra
);
1511 /* check if TID is in operational state */
1512 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1513 if (sta
->ampdu_mlme
.tid_state_rx
[tid
]
1514 != HT_AGG_STATE_OPERATIONAL
) {
1515 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1519 sta
->ampdu_mlme
.tid_state_rx
[tid
] =
1520 HT_AGG_STATE_REQ_STOP_BA_MSK
|
1521 (initiator
<< HT_AGG_STATE_INITIATOR_SHIFT
);
1522 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1524 /* stop HW Rx aggregation. ampdu_action existence
1525 * already verified in session init so we add the BUG_ON */
1526 BUG_ON(!local
->ops
->ampdu_action
);
1528 #ifdef CONFIG_MAC80211_HT_DEBUG
1529 printk(KERN_DEBUG
"Rx BA session stop requested for %s tid %u\n",
1530 print_mac(mac
, ra
), tid
);
1531 #endif /* CONFIG_MAC80211_HT_DEBUG */
1533 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_STOP
,
1536 printk(KERN_DEBUG
"HW problem - can not stop rx "
1537 "aggergation for tid %d\n", tid
);
1539 /* shutdown timer has not expired */
1540 if (initiator
!= WLAN_BACK_TIMER
)
1541 del_timer_sync(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1543 /* check if this is a self generated aggregation halt */
1544 if (initiator
== WLAN_BACK_RECIPIENT
|| initiator
== WLAN_BACK_TIMER
)
1545 ieee80211_send_delba(dev
, ra
, tid
, 0, reason
);
1547 /* free the reordering buffer */
1548 for (i
= 0; i
< sta
->ampdu_mlme
.tid_rx
[tid
]->buf_size
; i
++) {
1549 if (sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]) {
1550 /* release the reordered frames */
1551 dev_kfree_skb(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]);
1552 sta
->ampdu_mlme
.tid_rx
[tid
]->stored_mpdu_num
--;
1553 sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
] = NULL
;
1556 /* free resources */
1557 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
);
1558 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1559 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1560 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_IDLE
;
1566 static void ieee80211_sta_process_delba(struct net_device
*dev
,
1567 struct ieee80211_mgmt
*mgmt
, size_t len
)
1569 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1570 struct sta_info
*sta
;
1573 DECLARE_MAC_BUF(mac
);
1577 sta
= sta_info_get(local
, mgmt
->sa
);
1583 params
= le16_to_cpu(mgmt
->u
.action
.u
.delba
.params
);
1584 tid
= (params
& IEEE80211_DELBA_PARAM_TID_MASK
) >> 12;
1585 initiator
= (params
& IEEE80211_DELBA_PARAM_INITIATOR_MASK
) >> 11;
1587 #ifdef CONFIG_MAC80211_HT_DEBUG
1588 if (net_ratelimit())
1589 printk(KERN_DEBUG
"delba from %s (%s) tid %d reason code %d\n",
1590 print_mac(mac
, mgmt
->sa
),
1591 initiator
? "initiator" : "recipient", tid
,
1592 mgmt
->u
.action
.u
.delba
.reason_code
);
1593 #endif /* CONFIG_MAC80211_HT_DEBUG */
1595 if (initiator
== WLAN_BACK_INITIATOR
)
1596 ieee80211_sta_stop_rx_ba_session(dev
, sta
->addr
, tid
,
1597 WLAN_BACK_INITIATOR
, 0);
1598 else { /* WLAN_BACK_RECIPIENT */
1599 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1600 sta
->ampdu_mlme
.tid_state_tx
[tid
] =
1601 HT_AGG_STATE_OPERATIONAL
;
1602 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1603 ieee80211_stop_tx_ba_session(&local
->hw
, sta
->addr
, tid
,
1604 WLAN_BACK_RECIPIENT
);
1610 * After sending add Block Ack request we activated a timer until
1611 * add Block Ack response will arrive from the recipient.
1612 * If this timer expires sta_addba_resp_timer_expired will be executed.
1614 void sta_addba_resp_timer_expired(unsigned long data
)
1616 /* not an elegant detour, but there is no choice as the timer passes
1617 * only one argument, and both sta_info and TID are needed, so init
1618 * flow in sta_info_create gives the TID as data, while the timer_to_id
1619 * array gives the sta through container_of */
1620 u16 tid
= *(u8
*)data
;
1621 struct sta_info
*temp_sta
= container_of((void *)data
,
1622 struct sta_info
, timer_to_tid
[tid
]);
1624 struct ieee80211_local
*local
= temp_sta
->local
;
1625 struct ieee80211_hw
*hw
= &local
->hw
;
1626 struct sta_info
*sta
;
1631 sta
= sta_info_get(local
, temp_sta
->addr
);
1637 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1638 /* check if the TID waits for addBA response */
1639 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1640 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1641 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1642 *state
= HT_AGG_STATE_IDLE
;
1643 printk(KERN_DEBUG
"timer expired on tid %d but we are not "
1644 "expecting addBA response there", tid
);
1645 goto timer_expired_exit
;
1648 printk(KERN_DEBUG
"addBA response timer expired on tid %d\n", tid
);
1650 /* go through the state check in stop_BA_session */
1651 *state
= HT_AGG_STATE_OPERATIONAL
;
1652 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1653 ieee80211_stop_tx_ba_session(hw
, temp_sta
->addr
, tid
,
1654 WLAN_BACK_INITIATOR
);
1661 * After accepting the AddBA Request we activated a timer,
1662 * resetting it after each frame that arrives from the originator.
1663 * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
1665 void sta_rx_agg_session_timer_expired(unsigned long data
)
1667 /* not an elegant detour, but there is no choice as the timer passes
1668 * only one argument, and various sta_info are needed here, so init
1669 * flow in sta_info_create gives the TID as data, while the timer_to_id
1670 * array gives the sta through container_of */
1671 u8
*ptid
= (u8
*)data
;
1672 u8
*timer_to_id
= ptid
- *ptid
;
1673 struct sta_info
*sta
= container_of(timer_to_id
, struct sta_info
,
1676 printk(KERN_DEBUG
"rx session timer expired on tid %d\n", (u16
)*ptid
);
1677 ieee80211_sta_stop_rx_ba_session(sta
->sdata
->dev
, sta
->addr
,
1678 (u16
)*ptid
, WLAN_BACK_TIMER
,
1679 WLAN_REASON_QSTA_TIMEOUT
);
1682 void ieee80211_sta_tear_down_BA_sessions(struct net_device
*dev
, u8
*addr
)
1684 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1687 for (i
= 0; i
< STA_TID_NUM
; i
++) {
1688 ieee80211_stop_tx_ba_session(&local
->hw
, addr
, i
,
1689 WLAN_BACK_INITIATOR
);
1690 ieee80211_sta_stop_rx_ba_session(dev
, addr
, i
,
1691 WLAN_BACK_RECIPIENT
,
1692 WLAN_REASON_QSTA_LEAVE_QBSS
);
1696 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1697 struct ieee80211_if_sta
*ifsta
,
1698 struct ieee80211_mgmt
*mgmt
,
1701 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1702 u16 auth_alg
, auth_transaction
, status_code
;
1703 DECLARE_MAC_BUF(mac
);
1705 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1706 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
) {
1707 printk(KERN_DEBUG
"%s: authentication frame received from "
1708 "%s, but not in authenticate state - ignored\n",
1709 dev
->name
, print_mac(mac
, mgmt
->sa
));
1714 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
1715 "received from %s - ignored\n",
1716 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1720 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1721 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1722 printk(KERN_DEBUG
"%s: authentication frame received from "
1723 "unknown AP (SA=%s BSSID=%s) - "
1724 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1725 print_mac(mac
, mgmt
->bssid
));
1729 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1730 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
1731 printk(KERN_DEBUG
"%s: authentication frame received from "
1732 "unknown BSSID (SA=%s BSSID=%s) - "
1733 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1734 print_mac(mac
, mgmt
->bssid
));
1738 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1739 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1740 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1742 printk(KERN_DEBUG
"%s: RX authentication from %s (alg=%d "
1743 "transaction=%d status=%d)\n",
1744 dev
->name
, print_mac(mac
, mgmt
->sa
), auth_alg
,
1745 auth_transaction
, status_code
);
1747 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
1748 /* IEEE 802.11 standard does not require authentication in IBSS
1749 * networks and most implementations do not seem to use it.
1750 * However, try to reply to authentication attempts if someone
1751 * has actually implemented this.
1752 * TODO: Could implement shared key authentication. */
1753 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
1754 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
1755 "frame (alg=%d transaction=%d)\n",
1756 dev
->name
, auth_alg
, auth_transaction
);
1759 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1762 if (auth_alg
!= ifsta
->auth_alg
||
1763 auth_transaction
!= ifsta
->auth_transaction
) {
1764 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1765 "(alg=%d transaction=%d)\n",
1766 dev
->name
, auth_alg
, auth_transaction
);
1770 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1771 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1772 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1773 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1775 const int num_algs
= ARRAY_SIZE(algs
);
1777 algs
[0] = algs
[1] = algs
[2] = 0xff;
1778 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1779 algs
[0] = WLAN_AUTH_OPEN
;
1780 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1781 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1782 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1783 algs
[2] = WLAN_AUTH_LEAP
;
1784 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1786 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1790 for (i
= 0; i
< num_algs
; i
++) {
1792 if (pos
>= num_algs
)
1794 if (algs
[pos
] == ifsta
->auth_alg
||
1797 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1798 !ieee80211_sta_wep_configured(dev
))
1800 ifsta
->auth_alg
= algs
[pos
];
1801 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1803 dev
->name
, ifsta
->auth_alg
);
1810 switch (ifsta
->auth_alg
) {
1811 case WLAN_AUTH_OPEN
:
1812 case WLAN_AUTH_LEAP
:
1813 ieee80211_auth_completed(dev
, ifsta
);
1815 case WLAN_AUTH_SHARED_KEY
:
1816 if (ifsta
->auth_transaction
== 4)
1817 ieee80211_auth_completed(dev
, ifsta
);
1819 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1825 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1826 struct ieee80211_if_sta
*ifsta
,
1827 struct ieee80211_mgmt
*mgmt
,
1831 DECLARE_MAC_BUF(mac
);
1834 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1835 "received from %s - ignored\n",
1836 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1840 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1841 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1842 "unknown AP (SA=%s BSSID=%s) - "
1843 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1844 print_mac(mac
, mgmt
->bssid
));
1848 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1850 printk(KERN_DEBUG
"%s: RX deauthentication from %s"
1852 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1854 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1855 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1858 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1859 ifsta
->state
== IEEE80211_ASSOCIATE
||
1860 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1861 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1862 mod_timer(&ifsta
->timer
, jiffies
+
1863 IEEE80211_RETRY_AUTH_INTERVAL
);
1866 ieee80211_set_disassoc(dev
, ifsta
, 1);
1867 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1871 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1872 struct ieee80211_if_sta
*ifsta
,
1873 struct ieee80211_mgmt
*mgmt
,
1877 DECLARE_MAC_BUF(mac
);
1880 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1881 "received from %s - ignored\n",
1882 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1886 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1887 printk(KERN_DEBUG
"%s: disassociation frame received from "
1888 "unknown AP (SA=%s BSSID=%s) - "
1889 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1890 print_mac(mac
, mgmt
->bssid
));
1894 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1896 printk(KERN_DEBUG
"%s: RX disassociation from %s"
1898 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1900 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1901 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1903 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1904 ifsta
->state
= IEEE80211_ASSOCIATE
;
1905 mod_timer(&ifsta
->timer
, jiffies
+
1906 IEEE80211_RETRY_AUTH_INTERVAL
);
1909 ieee80211_set_disassoc(dev
, ifsta
, 0);
1913 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
1914 struct ieee80211_if_sta
*ifsta
,
1915 struct ieee80211_mgmt
*mgmt
,
1919 struct ieee80211_local
*local
= sdata
->local
;
1920 struct net_device
*dev
= sdata
->dev
;
1921 struct ieee80211_supported_band
*sband
;
1922 struct sta_info
*sta
;
1923 u64 rates
, basic_rates
;
1924 u16 capab_info
, status_code
, aid
;
1925 struct ieee802_11_elems elems
;
1926 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
1929 DECLARE_MAC_BUF(mac
);
1930 bool have_higher_than_11mbit
= false;
1932 /* AssocResp and ReassocResp have identical structure, so process both
1933 * of them in this function. */
1935 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1936 printk(KERN_DEBUG
"%s: association frame received from "
1937 "%s, but not in associate state - ignored\n",
1938 dev
->name
, print_mac(mac
, mgmt
->sa
));
1943 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1944 "received from %s - ignored\n",
1945 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1949 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1950 printk(KERN_DEBUG
"%s: association frame received from "
1951 "unknown AP (SA=%s BSSID=%s) - "
1952 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1953 print_mac(mac
, mgmt
->bssid
));
1957 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1958 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1959 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1961 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
1962 "status=%d aid=%d)\n",
1963 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
1964 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
1966 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1967 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1968 dev
->name
, status_code
);
1969 /* if this was a reassociation, ensure we try a "full"
1970 * association next time. This works around some broken APs
1971 * which do not correctly reject reassociation requests. */
1972 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1976 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1977 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1978 "set\n", dev
->name
, aid
);
1979 aid
&= ~(BIT(15) | BIT(14));
1981 pos
= mgmt
->u
.assoc_resp
.variable
;
1982 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1984 if (!elems
.supp_rates
) {
1985 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1990 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1992 ifsta
->ap_capab
= capab_info
;
1994 kfree(ifsta
->assocresp_ies
);
1995 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1996 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1997 if (ifsta
->assocresp_ies
)
1998 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
2002 /* Add STA entry for the AP */
2003 sta
= sta_info_get(local
, ifsta
->bssid
);
2005 struct ieee80211_sta_bss
*bss
;
2008 sta
= sta_info_alloc(sdata
, ifsta
->bssid
, GFP_ATOMIC
);
2010 printk(KERN_DEBUG
"%s: failed to alloc STA entry for"
2011 " the AP\n", dev
->name
);
2015 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
2016 local
->hw
.conf
.channel
->center_freq
,
2017 ifsta
->ssid
, ifsta
->ssid_len
);
2019 sta
->last_rssi
= bss
->rssi
;
2020 sta
->last_signal
= bss
->signal
;
2021 sta
->last_noise
= bss
->noise
;
2022 ieee80211_rx_bss_put(dev
, bss
);
2025 err
= sta_info_insert(sta
);
2027 printk(KERN_DEBUG
"%s: failed to insert STA entry for"
2028 " the AP (error %d)\n", dev
->name
, err
);
2035 * FIXME: Do we really need to update the sta_info's information here?
2036 * We already know about the AP (we found it in our list) so it
2037 * should already be filled with the right info, no?
2038 * As is stands, all this is racy because typically we assume
2039 * the information that is filled in here (except flags) doesn't
2040 * change while a STA structure is alive. As such, it should move
2041 * to between the sta_info_alloc() and sta_info_insert() above.
2044 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
|
2045 WLAN_STA_AUTHORIZED
;
2049 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2051 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
2052 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
2055 have_higher_than_11mbit
= true;
2057 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2058 if (sband
->bitrates
[j
].bitrate
== rate
)
2060 if (elems
.supp_rates
[i
] & 0x80)
2061 basic_rates
|= BIT(j
);
2065 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
2066 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
2069 have_higher_than_11mbit
= true;
2071 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2072 if (sband
->bitrates
[j
].bitrate
== rate
)
2074 if (elems
.ext_supp_rates
[i
] & 0x80)
2075 basic_rates
|= BIT(j
);
2079 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] = rates
;
2080 sdata
->basic_rates
= basic_rates
;
2082 /* cf. IEEE 802.11 9.2.12 */
2083 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
2084 have_higher_than_11mbit
)
2085 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
2087 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
2089 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&& elems
.wmm_param
) {
2090 struct ieee80211_ht_bss_info bss_info
;
2091 ieee80211_ht_cap_ie_to_ht_info(
2092 (struct ieee80211_ht_cap
*)
2093 elems
.ht_cap_elem
, &sta
->ht_info
);
2094 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2095 (struct ieee80211_ht_addt_info
*)
2096 elems
.ht_info_elem
, &bss_info
);
2097 ieee80211_handle_ht(local
, 1, &sta
->ht_info
, &bss_info
);
2100 rate_control_rate_init(sta
, local
);
2102 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2103 sta
->flags
|= WLAN_STA_WME
;
2105 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2106 elems
.wmm_param_len
);
2110 /* set AID and assoc capability,
2111 * ieee80211_set_associated() will tell the driver */
2112 bss_conf
->aid
= aid
;
2113 bss_conf
->assoc_capability
= capab_info
;
2114 ieee80211_set_associated(dev
, ifsta
, 1);
2116 ieee80211_associated(dev
, ifsta
);
2120 /* Caller must hold local->sta_bss_lock */
2121 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
2122 struct ieee80211_sta_bss
*bss
)
2124 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2127 if (bss_mesh_cfg(bss
))
2128 hash_idx
= mesh_id_hash(bss_mesh_id(bss
),
2129 bss_mesh_id_len(bss
));
2131 hash_idx
= STA_HASH(bss
->bssid
);
2133 bss
->hnext
= local
->sta_bss_hash
[hash_idx
];
2134 local
->sta_bss_hash
[hash_idx
] = bss
;
2138 /* Caller must hold local->sta_bss_lock */
2139 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
2140 struct ieee80211_sta_bss
*bss
)
2142 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2143 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
2144 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
2148 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
2151 prev
->hnext
= bss
->hnext
;
2160 static struct ieee80211_sta_bss
*
2161 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int freq
,
2162 u8
*ssid
, u8 ssid_len
)
2164 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2165 struct ieee80211_sta_bss
*bss
;
2167 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2170 atomic_inc(&bss
->users
);
2171 atomic_inc(&bss
->users
);
2172 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
2174 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
2175 memcpy(bss
->ssid
, ssid
, ssid_len
);
2176 bss
->ssid_len
= ssid_len
;
2179 spin_lock_bh(&local
->sta_bss_lock
);
2180 /* TODO: order by RSSI? */
2181 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2182 __ieee80211_rx_bss_hash_add(dev
, bss
);
2183 spin_unlock_bh(&local
->sta_bss_lock
);
2187 static struct ieee80211_sta_bss
*
2188 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
2189 u8
*ssid
, u8 ssid_len
)
2191 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2192 struct ieee80211_sta_bss
*bss
;
2194 spin_lock_bh(&local
->sta_bss_lock
);
2195 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
2197 if (!bss_mesh_cfg(bss
) &&
2198 !memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
2199 bss
->freq
== freq
&&
2200 bss
->ssid_len
== ssid_len
&&
2201 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
2202 atomic_inc(&bss
->users
);
2207 spin_unlock_bh(&local
->sta_bss_lock
);
2211 #ifdef CONFIG_MAC80211_MESH
2212 static struct ieee80211_sta_bss
*
2213 ieee80211_rx_mesh_bss_get(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2214 u8
*mesh_cfg
, int freq
)
2216 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2217 struct ieee80211_sta_bss
*bss
;
2219 spin_lock_bh(&local
->sta_bss_lock
);
2220 bss
= local
->sta_bss_hash
[mesh_id_hash(mesh_id
, mesh_id_len
)];
2222 if (bss_mesh_cfg(bss
) &&
2223 !memcmp(bss_mesh_cfg(bss
), mesh_cfg
, MESH_CFG_CMP_LEN
) &&
2224 bss
->freq
== freq
&&
2225 mesh_id_len
== bss
->mesh_id_len
&&
2226 (mesh_id_len
== 0 || !memcmp(bss
->mesh_id
, mesh_id
,
2228 atomic_inc(&bss
->users
);
2233 spin_unlock_bh(&local
->sta_bss_lock
);
2237 static struct ieee80211_sta_bss
*
2238 ieee80211_rx_mesh_bss_add(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2239 u8
*mesh_cfg
, int mesh_config_len
, int freq
)
2241 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2242 struct ieee80211_sta_bss
*bss
;
2244 if (mesh_config_len
!= MESH_CFG_LEN
)
2247 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2251 bss
->mesh_cfg
= kmalloc(MESH_CFG_CMP_LEN
, GFP_ATOMIC
);
2252 if (!bss
->mesh_cfg
) {
2257 if (mesh_id_len
&& mesh_id_len
<= IEEE80211_MAX_MESH_ID_LEN
) {
2258 bss
->mesh_id
= kmalloc(mesh_id_len
, GFP_ATOMIC
);
2259 if (!bss
->mesh_id
) {
2260 kfree(bss
->mesh_cfg
);
2264 memcpy(bss
->mesh_id
, mesh_id
, mesh_id_len
);
2267 atomic_inc(&bss
->users
);
2268 atomic_inc(&bss
->users
);
2269 memcpy(bss
->mesh_cfg
, mesh_cfg
, MESH_CFG_CMP_LEN
);
2270 bss
->mesh_id_len
= mesh_id_len
;
2272 spin_lock_bh(&local
->sta_bss_lock
);
2273 /* TODO: order by RSSI? */
2274 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2275 __ieee80211_rx_bss_hash_add(dev
, bss
);
2276 spin_unlock_bh(&local
->sta_bss_lock
);
2281 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
2287 kfree(bss_mesh_id(bss
));
2288 kfree(bss_mesh_cfg(bss
));
2293 static void ieee80211_rx_bss_put(struct net_device
*dev
,
2294 struct ieee80211_sta_bss
*bss
)
2296 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2299 if (!atomic_dec_and_lock(&bss
->users
, &local
->sta_bss_lock
)) {
2304 __ieee80211_rx_bss_hash_del(dev
, bss
);
2305 list_del(&bss
->list
);
2306 spin_unlock_bh(&local
->sta_bss_lock
);
2307 ieee80211_rx_bss_free(bss
);
2311 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
2313 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2314 spin_lock_init(&local
->sta_bss_lock
);
2315 INIT_LIST_HEAD(&local
->sta_bss_list
);
2319 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
2321 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2322 struct ieee80211_sta_bss
*bss
, *tmp
;
2324 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
2325 ieee80211_rx_bss_put(dev
, bss
);
2329 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2330 struct ieee80211_if_sta
*ifsta
,
2331 struct ieee80211_sta_bss
*bss
)
2333 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2334 int res
, rates
, i
, j
;
2335 struct sk_buff
*skb
;
2336 struct ieee80211_mgmt
*mgmt
;
2337 struct ieee80211_tx_control control
;
2338 struct rate_selection ratesel
;
2340 struct ieee80211_sub_if_data
*sdata
;
2341 struct ieee80211_supported_band
*sband
;
2342 union iwreq_data wrqu
;
2344 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2346 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2348 /* Remove possible STA entries from other IBSS networks. */
2349 sta_info_flush_delayed(sdata
);
2351 if (local
->ops
->reset_tsf
) {
2352 /* Reset own TSF to allow time synchronization work. */
2353 local
->ops
->reset_tsf(local_to_hw(local
));
2355 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2356 res
= ieee80211_if_config(dev
);
2360 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2362 sdata
->drop_unencrypted
= bss
->capability
&
2363 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2365 res
= ieee80211_set_freq(dev
, bss
->freq
);
2370 /* Set beacon template */
2371 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2376 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2378 mgmt
= (struct ieee80211_mgmt
*)
2379 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2380 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2381 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2382 IEEE80211_STYPE_BEACON
);
2383 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2384 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2385 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2386 mgmt
->u
.beacon
.beacon_int
=
2387 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2388 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2390 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2391 *pos
++ = WLAN_EID_SSID
;
2392 *pos
++ = ifsta
->ssid_len
;
2393 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2395 rates
= bss
->supp_rates_len
;
2398 pos
= skb_put(skb
, 2 + rates
);
2399 *pos
++ = WLAN_EID_SUPP_RATES
;
2401 memcpy(pos
, bss
->supp_rates
, rates
);
2403 if (bss
->band
== IEEE80211_BAND_2GHZ
) {
2404 pos
= skb_put(skb
, 2 + 1);
2405 *pos
++ = WLAN_EID_DS_PARAMS
;
2407 *pos
++ = ieee80211_frequency_to_channel(bss
->freq
);
2410 pos
= skb_put(skb
, 2 + 2);
2411 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2413 /* FIX: set ATIM window based on scan results */
2417 if (bss
->supp_rates_len
> 8) {
2418 rates
= bss
->supp_rates_len
- 8;
2419 pos
= skb_put(skb
, 2 + rates
);
2420 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2422 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2425 memset(&control
, 0, sizeof(control
));
2426 rate_control_get_rate(dev
, sband
, skb
, &ratesel
);
2427 if (!ratesel
.rate
) {
2428 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2429 "for IBSS beacon\n", dev
->name
);
2432 control
.vif
= &sdata
->vif
;
2433 control
.tx_rate
= ratesel
.rate
;
2434 if (sdata
->bss_conf
.use_short_preamble
&&
2435 ratesel
.rate
->flags
& IEEE80211_RATE_SHORT_PREAMBLE
)
2436 control
.flags
|= IEEE80211_TXCTL_SHORT_PREAMBLE
;
2437 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
2438 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
2439 control
.retry_limit
= 1;
2441 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
2442 if (ifsta
->probe_resp
) {
2443 mgmt
= (struct ieee80211_mgmt
*)
2444 ifsta
->probe_resp
->data
;
2445 mgmt
->frame_control
=
2446 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2447 IEEE80211_STYPE_PROBE_RESP
);
2449 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
2450 "template for IBSS\n", dev
->name
);
2453 if (local
->ops
->beacon_update
&&
2454 local
->ops
->beacon_update(local_to_hw(local
),
2455 skb
, &control
) == 0) {
2456 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
2457 "template\n", dev
->name
);
2462 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2463 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2464 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2465 for (j
= 0; j
< sband
->n_bitrates
; j
++)
2466 if (sband
->bitrates
[j
].bitrate
== bitrate
)
2469 ifsta
->supp_rates_bits
[local
->hw
.conf
.channel
->band
] = rates
;
2471 ieee80211_sta_def_wmm_params(dev
, bss
, 1);
2475 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
2476 "template\n", dev
->name
);
2480 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2481 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2483 memset(&wrqu
, 0, sizeof(wrqu
));
2484 memcpy(wrqu
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
2485 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
2490 u64
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
2491 struct ieee802_11_elems
*elems
,
2492 enum ieee80211_band band
)
2494 struct ieee80211_supported_band
*sband
;
2495 struct ieee80211_rate
*bitrates
;
2499 sband
= local
->hw
.wiphy
->bands
[band
];
2503 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2506 bitrates
= sband
->bitrates
;
2507 num_rates
= sband
->n_bitrates
;
2509 for (i
= 0; i
< elems
->supp_rates_len
+
2510 elems
->ext_supp_rates_len
; i
++) {
2513 if (i
< elems
->supp_rates_len
)
2514 rate
= elems
->supp_rates
[i
];
2515 else if (elems
->ext_supp_rates
)
2516 rate
= elems
->ext_supp_rates
2517 [i
- elems
->supp_rates_len
];
2518 own_rate
= 5 * (rate
& 0x7f);
2519 for (j
= 0; j
< num_rates
; j
++)
2520 if (bitrates
[j
].bitrate
== own_rate
)
2521 supp_rates
|= BIT(j
);
2527 static void ieee80211_rx_bss_info(struct net_device
*dev
,
2528 struct ieee80211_mgmt
*mgmt
,
2530 struct ieee80211_rx_status
*rx_status
,
2533 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2534 struct ieee802_11_elems elems
;
2537 struct ieee80211_sta_bss
*bss
;
2538 struct sta_info
*sta
;
2539 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2540 u64 beacon_timestamp
, rx_timestamp
;
2541 struct ieee80211_channel
*channel
;
2542 DECLARE_MAC_BUF(mac
);
2543 DECLARE_MAC_BUF(mac2
);
2545 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
2546 return; /* ignore ProbeResp to foreign address */
2549 printk(KERN_DEBUG
"%s: RX %s from %s to %s\n",
2550 dev
->name
, beacon
? "Beacon" : "Probe Response",
2551 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
));
2554 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2558 beacon_timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
2559 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2561 if (ieee80211_vif_is_mesh(&sdata
->vif
) && elems
.mesh_id
&&
2562 elems
.mesh_config
&& mesh_matches_local(&elems
, dev
)) {
2563 u64 rates
= ieee80211_sta_get_rates(local
, &elems
,
2566 mesh_neighbour_update(mgmt
->sa
, rates
, dev
,
2567 mesh_peer_accepts_plinks(&elems
, dev
));
2572 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
2573 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
2574 (sta
= sta_info_get(local
, mgmt
->sa
))) {
2576 u64 supp_rates
= ieee80211_sta_get_rates(local
, &elems
,
2579 prev_rates
= sta
->supp_rates
[rx_status
->band
];
2580 sta
->supp_rates
[rx_status
->band
] &= supp_rates
;
2581 if (sta
->supp_rates
[rx_status
->band
] == 0) {
2582 /* No matching rates - this should not really happen.
2583 * Make sure that at least one rate is marked
2584 * supported to avoid issues with TX rate ctrl. */
2585 sta
->supp_rates
[rx_status
->band
] =
2586 sdata
->u
.sta
.supp_rates_bits
[rx_status
->band
];
2588 if (sta
->supp_rates
[rx_status
->band
] != prev_rates
) {
2589 printk(KERN_DEBUG
"%s: updated supp_rates set for "
2590 "%s based on beacon info (0x%llx & 0x%llx -> "
2592 dev
->name
, print_mac(mac
, sta
->addr
),
2593 (unsigned long long) prev_rates
,
2594 (unsigned long long) supp_rates
,
2595 (unsigned long long) sta
->supp_rates
[rx_status
->band
]);
2601 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
2602 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0]);
2604 freq
= rx_status
->freq
;
2606 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
2608 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
2611 #ifdef CONFIG_MAC80211_MESH
2612 if (elems
.mesh_config
)
2613 bss
= ieee80211_rx_mesh_bss_get(dev
, elems
.mesh_id
,
2614 elems
.mesh_id_len
, elems
.mesh_config
, freq
);
2617 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, freq
,
2618 elems
.ssid
, elems
.ssid_len
);
2620 #ifdef CONFIG_MAC80211_MESH
2621 if (elems
.mesh_config
)
2622 bss
= ieee80211_rx_mesh_bss_add(dev
, elems
.mesh_id
,
2623 elems
.mesh_id_len
, elems
.mesh_config
,
2624 elems
.mesh_config_len
, freq
);
2627 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, freq
,
2628 elems
.ssid
, elems
.ssid_len
);
2633 /* TODO: order by RSSI? */
2634 spin_lock_bh(&local
->sta_bss_lock
);
2635 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
2636 spin_unlock_bh(&local
->sta_bss_lock
);
2640 /* save the ERP value so that it is available at association time */
2641 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
2642 bss
->erp_value
= elems
.erp_info
[0];
2643 bss
->has_erp_value
= 1;
2646 if (elems
.ht_cap_elem
&&
2647 (!bss
->ht_ie
|| bss
->ht_ie_len
!= elems
.ht_cap_elem_len
||
2648 memcmp(bss
->ht_ie
, elems
.ht_cap_elem
, elems
.ht_cap_elem_len
))) {
2650 bss
->ht_ie
= kmalloc(elems
.ht_cap_elem_len
+ 2, GFP_ATOMIC
);
2652 memcpy(bss
->ht_ie
, elems
.ht_cap_elem
- 2,
2653 elems
.ht_cap_elem_len
+ 2);
2654 bss
->ht_ie_len
= elems
.ht_cap_elem_len
+ 2;
2657 } else if (!elems
.ht_cap_elem
&& bss
->ht_ie
) {
2663 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
2664 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2666 bss
->supp_rates_len
= 0;
2667 if (elems
.supp_rates
) {
2668 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2669 if (clen
> elems
.supp_rates_len
)
2670 clen
= elems
.supp_rates_len
;
2671 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
2673 bss
->supp_rates_len
+= clen
;
2675 if (elems
.ext_supp_rates
) {
2676 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2677 if (clen
> elems
.ext_supp_rates_len
)
2678 clen
= elems
.ext_supp_rates_len
;
2679 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
2680 elems
.ext_supp_rates
, clen
);
2681 bss
->supp_rates_len
+= clen
;
2684 bss
->band
= rx_status
->band
;
2686 bss
->timestamp
= beacon_timestamp
;
2687 bss
->last_update
= jiffies
;
2688 bss
->rssi
= rx_status
->ssi
;
2689 bss
->signal
= rx_status
->signal
;
2690 bss
->noise
= rx_status
->noise
;
2691 if (!beacon
&& !bss
->probe_resp
)
2692 bss
->probe_resp
= true;
2695 * In STA mode, the remaining parameters should not be overridden
2696 * by beacons because they're not necessarily accurate there.
2698 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
2699 bss
->probe_resp
&& beacon
) {
2700 ieee80211_rx_bss_put(dev
, bss
);
2705 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
2706 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
2708 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
2710 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
2711 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
2713 bss
->wpa_ie_len
= 0;
2714 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
2717 bss
->wpa_ie_len
= 0;
2721 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
2722 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
2724 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
2726 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
2727 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
2729 bss
->rsn_ie_len
= 0;
2730 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
2733 bss
->rsn_ie_len
= 0;
2738 * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC
2742 * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia
2743 * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi
2744 * Alliance (September 1, 2004) is incorporated by reference herein.
2745 * The inclusion of the WMM Parameters in probe responses and
2746 * association responses is mandatory for WMM enabled networks. The
2747 * inclusion of the WMM Parameters in beacons, however, is optional.
2750 if (elems
.wmm_param
&&
2751 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
2752 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
2754 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
2756 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
2757 elems
.wmm_param_len
+ 2);
2758 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
2760 bss
->wmm_ie_len
= 0;
2761 } else if (elems
.wmm_info
&&
2762 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_info_len
||
2763 memcmp(bss
->wmm_ie
, elems
.wmm_info
, elems
.wmm_info_len
))) {
2764 /* As for certain AP's Fifth bit is not set in WMM IE in
2765 * beacon frames.So while parsing the beacon frame the
2766 * wmm_info structure is used instead of wmm_param.
2767 * wmm_info structure was never used to set bss->wmm_ie.
2768 * This code fixes this problem by copying the WME
2769 * information from wmm_info to bss->wmm_ie and enabling
2770 * n-band association.
2773 bss
->wmm_ie
= kmalloc(elems
.wmm_info_len
+ 2, GFP_ATOMIC
);
2775 memcpy(bss
->wmm_ie
, elems
.wmm_info
- 2,
2776 elems
.wmm_info_len
+ 2);
2777 bss
->wmm_ie_len
= elems
.wmm_info_len
+ 2;
2779 bss
->wmm_ie_len
= 0;
2780 } else if (!elems
.wmm_param
&& !elems
.wmm_info
&& bss
->wmm_ie
) {
2783 bss
->wmm_ie_len
= 0;
2786 /* check if we need to merge IBSS */
2787 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
2788 !local
->sta_sw_scanning
&& !local
->sta_hw_scanning
&&
2789 bss
->capability
& WLAN_CAPABILITY_IBSS
&&
2790 bss
->freq
== local
->oper_channel
->center_freq
&&
2791 elems
.ssid_len
== sdata
->u
.sta
.ssid_len
&&
2792 memcmp(elems
.ssid
, sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
) == 0) {
2793 if (rx_status
->flag
& RX_FLAG_TSFT
) {
2794 /* in order for correct IBSS merging we need mactime
2796 * since mactime is defined as the time the first data
2797 * symbol of the frame hits the PHY, and the timestamp
2798 * of the beacon is defined as "the time that the data
2799 * symbol containing the first bit of the timestamp is
2800 * transmitted to the PHY plus the transmitting STA’s
2801 * delays through its local PHY from the MAC-PHY
2802 * interface to its interface with the WM"
2803 * (802.11 11.1.2) - equals the time this bit arrives at
2804 * the receiver - we have to take into account the
2805 * offset between the two.
2806 * e.g: at 1 MBit that means mactime is 192 usec earlier
2807 * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
2809 int rate
= local
->hw
.wiphy
->bands
[rx_status
->band
]->
2810 bitrates
[rx_status
->rate_idx
].bitrate
;
2811 rx_timestamp
= rx_status
->mactime
+ (24 * 8 * 10 / rate
);
2812 } else if (local
&& local
->ops
&& local
->ops
->get_tsf
)
2813 /* second best option: get current TSF */
2814 rx_timestamp
= local
->ops
->get_tsf(local_to_hw(local
));
2816 /* can't merge without knowing the TSF */
2817 rx_timestamp
= -1LLU;
2818 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2819 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
2820 "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
2821 print_mac(mac
, mgmt
->sa
),
2822 print_mac(mac2
, mgmt
->bssid
),
2823 (unsigned long long)rx_timestamp
,
2824 (unsigned long long)beacon_timestamp
,
2825 (unsigned long long)(rx_timestamp
- beacon_timestamp
),
2827 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2828 if (beacon_timestamp
> rx_timestamp
) {
2829 #ifndef CONFIG_MAC80211_IBSS_DEBUG
2830 if (net_ratelimit())
2832 printk(KERN_DEBUG
"%s: beacon TSF higher than "
2833 "local TSF - IBSS merge with BSSID %s\n",
2834 dev
->name
, print_mac(mac
, mgmt
->bssid
));
2835 ieee80211_sta_join_ibss(dev
, &sdata
->u
.sta
, bss
);
2836 ieee80211_ibss_add_sta(dev
, NULL
,
2837 mgmt
->bssid
, mgmt
->sa
);
2841 ieee80211_rx_bss_put(dev
, bss
);
2845 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
2846 struct ieee80211_mgmt
*mgmt
,
2848 struct ieee80211_rx_status
*rx_status
)
2850 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
2854 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
2855 struct ieee80211_mgmt
*mgmt
,
2857 struct ieee80211_rx_status
*rx_status
)
2859 struct ieee80211_sub_if_data
*sdata
;
2860 struct ieee80211_if_sta
*ifsta
;
2862 struct ieee802_11_elems elems
;
2863 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2864 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
2867 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
2869 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2870 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2872 ifsta
= &sdata
->u
.sta
;
2874 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
2875 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
2878 /* Process beacon from the current BSS */
2879 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2883 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2885 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2886 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2887 elems
.wmm_param_len
);
2890 /* Do not send changes to driver if we are scanning. This removes
2891 * requirement that driver's bss_info_changed function needs to be
2893 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
2896 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
2897 changed
|= ieee80211_handle_erp_ie(sdata
, elems
.erp_info
[0]);
2899 u16 capab
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2900 changed
|= ieee80211_handle_protect_preamb(sdata
, false,
2901 (capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
) != 0);
2904 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&&
2905 elems
.wmm_param
&& conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
2906 struct ieee80211_ht_bss_info bss_info
;
2908 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2909 (struct ieee80211_ht_addt_info
*)
2910 elems
.ht_info_elem
, &bss_info
);
2911 changed
|= ieee80211_handle_ht(local
, 1, &conf
->ht_conf
,
2915 ieee80211_bss_info_change_notify(sdata
, changed
);
2919 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
2920 struct ieee80211_if_sta
*ifsta
,
2921 struct ieee80211_mgmt
*mgmt
,
2923 struct ieee80211_rx_status
*rx_status
)
2925 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2926 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2928 struct sk_buff
*skb
;
2929 struct ieee80211_mgmt
*resp
;
2931 DECLARE_MAC_BUF(mac
);
2932 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2933 DECLARE_MAC_BUF(mac2
);
2934 DECLARE_MAC_BUF(mac3
);
2937 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
||
2938 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
2939 len
< 24 + 2 || !ifsta
->probe_resp
)
2942 if (local
->ops
->tx_last_beacon
)
2943 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
2947 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2948 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
2949 "%s (tx_last_beacon=%d)\n",
2950 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
2951 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
2952 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2954 if (!tx_last_beacon
)
2957 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
2958 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
2961 end
= ((u8
*) mgmt
) + len
;
2962 pos
= mgmt
->u
.probe_req
.variable
;
2963 if (pos
[0] != WLAN_EID_SSID
||
2964 pos
+ 2 + pos
[1] > end
) {
2965 if (net_ratelimit()) {
2966 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
2968 dev
->name
, print_mac(mac
, mgmt
->sa
));
2973 (pos
[1] != ifsta
->ssid_len
||
2974 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
2975 /* Ignore ProbeReq for foreign SSID */
2979 /* Reply with ProbeResp */
2980 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
2984 resp
= (struct ieee80211_mgmt
*) skb
->data
;
2985 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
2986 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2987 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
2988 dev
->name
, print_mac(mac
, resp
->da
));
2989 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2990 ieee80211_sta_tx(dev
, skb
, 0);
2993 static void ieee80211_rx_mgmt_action(struct net_device
*dev
,
2994 struct ieee80211_if_sta
*ifsta
,
2995 struct ieee80211_mgmt
*mgmt
,
2997 struct ieee80211_rx_status
*rx_status
)
2999 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3001 if (len
< IEEE80211_MIN_ACTION_SIZE
)
3004 switch (mgmt
->u
.action
.category
) {
3005 case WLAN_CATEGORY_BACK
:
3006 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
3007 case WLAN_ACTION_ADDBA_REQ
:
3008 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3009 sizeof(mgmt
->u
.action
.u
.addba_req
)))
3011 ieee80211_sta_process_addba_request(dev
, mgmt
, len
);
3013 case WLAN_ACTION_ADDBA_RESP
:
3014 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3015 sizeof(mgmt
->u
.action
.u
.addba_resp
)))
3017 ieee80211_sta_process_addba_resp(dev
, mgmt
, len
);
3019 case WLAN_ACTION_DELBA
:
3020 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3021 sizeof(mgmt
->u
.action
.u
.delba
)))
3023 ieee80211_sta_process_delba(dev
, mgmt
, len
);
3026 if (net_ratelimit())
3027 printk(KERN_DEBUG
"%s: Rx unknown A-MPDU action\n",
3032 case PLINK_CATEGORY
:
3033 if (ieee80211_vif_is_mesh(&sdata
->vif
))
3034 mesh_rx_plink_frame(dev
, mgmt
, len
, rx_status
);
3036 case MESH_PATH_SEL_CATEGORY
:
3037 if (ieee80211_vif_is_mesh(&sdata
->vif
))
3038 mesh_rx_path_sel_frame(dev
, mgmt
, len
);
3041 if (net_ratelimit())
3042 printk(KERN_DEBUG
"%s: Rx unknown action frame - "
3043 "category=%d\n", dev
->name
, mgmt
->u
.action
.category
);
3048 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
3049 struct ieee80211_rx_status
*rx_status
)
3051 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3052 struct ieee80211_sub_if_data
*sdata
;
3053 struct ieee80211_if_sta
*ifsta
;
3054 struct ieee80211_mgmt
*mgmt
;
3060 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3061 ifsta
= &sdata
->u
.sta
;
3063 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3064 fc
= le16_to_cpu(mgmt
->frame_control
);
3066 switch (fc
& IEEE80211_FCTL_STYPE
) {
3067 case IEEE80211_STYPE_PROBE_REQ
:
3068 case IEEE80211_STYPE_PROBE_RESP
:
3069 case IEEE80211_STYPE_BEACON
:
3070 case IEEE80211_STYPE_ACTION
:
3071 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
3072 case IEEE80211_STYPE_AUTH
:
3073 case IEEE80211_STYPE_ASSOC_RESP
:
3074 case IEEE80211_STYPE_REASSOC_RESP
:
3075 case IEEE80211_STYPE_DEAUTH
:
3076 case IEEE80211_STYPE_DISASSOC
:
3077 skb_queue_tail(&ifsta
->skb_queue
, skb
);
3078 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3081 printk(KERN_DEBUG
"%s: received unknown management frame - "
3082 "stype=%d\n", dev
->name
,
3083 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
3092 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
3093 struct sk_buff
*skb
)
3095 struct ieee80211_rx_status
*rx_status
;
3096 struct ieee80211_sub_if_data
*sdata
;
3097 struct ieee80211_if_sta
*ifsta
;
3098 struct ieee80211_mgmt
*mgmt
;
3101 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3102 ifsta
= &sdata
->u
.sta
;
3104 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
3105 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3106 fc
= le16_to_cpu(mgmt
->frame_control
);
3108 switch (fc
& IEEE80211_FCTL_STYPE
) {
3109 case IEEE80211_STYPE_PROBE_REQ
:
3110 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
3113 case IEEE80211_STYPE_PROBE_RESP
:
3114 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
3116 case IEEE80211_STYPE_BEACON
:
3117 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
3119 case IEEE80211_STYPE_AUTH
:
3120 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
3122 case IEEE80211_STYPE_ASSOC_RESP
:
3123 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 0);
3125 case IEEE80211_STYPE_REASSOC_RESP
:
3126 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 1);
3128 case IEEE80211_STYPE_DEAUTH
:
3129 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
3131 case IEEE80211_STYPE_DISASSOC
:
3132 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
3134 case IEEE80211_STYPE_ACTION
:
3135 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
, rx_status
);
3144 ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
3145 struct ieee80211_rx_status
*rx_status
)
3147 struct ieee80211_mgmt
*mgmt
;
3151 return RX_DROP_UNUSABLE
;
3153 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3154 fc
= le16_to_cpu(mgmt
->frame_control
);
3156 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_CTL
)
3160 return RX_DROP_MONITOR
;
3162 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
3163 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
3164 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
3165 skb
->len
, rx_status
);
3168 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
3169 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
3179 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
3181 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3183 struct sta_info
*sta
;
3184 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3188 list_for_each_entry_rcu(sta
, &local
->sta_list
, list
) {
3189 if (sta
->sdata
== sdata
&&
3190 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
3203 static void ieee80211_sta_expire(struct net_device
*dev
, unsigned long exp_time
)
3205 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3206 struct sta_info
*sta
, *tmp
;
3207 LIST_HEAD(tmp_list
);
3208 DECLARE_MAC_BUF(mac
);
3209 unsigned long flags
;
3211 spin_lock_irqsave(&local
->sta_lock
, flags
);
3212 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
3213 if (time_after(jiffies
, sta
->last_rx
+ exp_time
)) {
3214 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
3215 dev
->name
, print_mac(mac
, sta
->addr
));
3216 __sta_info_unlink(&sta
);
3218 list_add(&sta
->list
, &tmp_list
);
3220 spin_unlock_irqrestore(&local
->sta_lock
, flags
);
3222 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
)
3223 sta_info_destroy(sta
);
3227 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
3228 struct ieee80211_if_sta
*ifsta
)
3230 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
3232 ieee80211_sta_expire(dev
, IEEE80211_IBSS_INACTIVITY_LIMIT
);
3233 if (ieee80211_sta_active_ibss(dev
))
3236 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
3237 "IBSS networks with same SSID (merge)\n", dev
->name
);
3238 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
3242 #ifdef CONFIG_MAC80211_MESH
3243 static void ieee80211_mesh_housekeeping(struct net_device
*dev
,
3244 struct ieee80211_if_sta
*ifsta
)
3246 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3249 ieee80211_sta_expire(dev
, IEEE80211_MESH_PEER_INACTIVITY_LIMIT
);
3250 mesh_path_expire(dev
);
3252 free_plinks
= mesh_plink_availables(sdata
);
3253 if (free_plinks
!= sdata
->u
.sta
.accepting_plinks
)
3254 ieee80211_if_config_beacon(dev
);
3256 mod_timer(&ifsta
->timer
, jiffies
+
3257 IEEE80211_MESH_HOUSEKEEPING_INTERVAL
);
3261 void ieee80211_start_mesh(struct net_device
*dev
)
3263 struct ieee80211_if_sta
*ifsta
;
3264 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3265 ifsta
= &sdata
->u
.sta
;
3266 ifsta
->state
= IEEE80211_MESH_UP
;
3267 ieee80211_sta_timer((unsigned long)sdata
);
3272 void ieee80211_sta_timer(unsigned long data
)
3274 struct ieee80211_sub_if_data
*sdata
=
3275 (struct ieee80211_sub_if_data
*) data
;
3276 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3277 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
3279 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3280 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3283 void ieee80211_sta_work(struct work_struct
*work
)
3285 struct ieee80211_sub_if_data
*sdata
=
3286 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
3287 struct net_device
*dev
= sdata
->dev
;
3288 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3289 struct ieee80211_if_sta
*ifsta
;
3290 struct sk_buff
*skb
;
3292 if (!netif_running(dev
))
3295 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
3298 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
3299 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
3300 sdata
->vif
.type
!= IEEE80211_IF_TYPE_MESH_POINT
) {
3301 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
3302 "(type=%d)\n", dev
->name
, sdata
->vif
.type
);
3305 ifsta
= &sdata
->u
.sta
;
3307 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
3308 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
3310 #ifdef CONFIG_MAC80211_MESH
3311 if (ifsta
->preq_queue_len
&&
3313 ifsta
->last_preq
+ msecs_to_jiffies(ifsta
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
3314 mesh_path_start_discovery(dev
);
3317 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
3318 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
3319 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
3320 if (ifsta
->scan_ssid_len
)
3321 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
3323 ieee80211_sta_start_scan(dev
, NULL
, 0);
3327 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
3328 if (ieee80211_sta_config_auth(dev
, ifsta
))
3330 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3331 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
3334 switch (ifsta
->state
) {
3335 case IEEE80211_DISABLED
:
3337 case IEEE80211_AUTHENTICATE
:
3338 ieee80211_authenticate(dev
, ifsta
);
3340 case IEEE80211_ASSOCIATE
:
3341 ieee80211_associate(dev
, ifsta
);
3343 case IEEE80211_ASSOCIATED
:
3344 ieee80211_associated(dev
, ifsta
);
3346 case IEEE80211_IBSS_SEARCH
:
3347 ieee80211_sta_find_ibss(dev
, ifsta
);
3349 case IEEE80211_IBSS_JOINED
:
3350 ieee80211_sta_merge_ibss(dev
, ifsta
);
3352 #ifdef CONFIG_MAC80211_MESH
3353 case IEEE80211_MESH_UP
:
3354 ieee80211_mesh_housekeeping(dev
, ifsta
);
3358 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
3363 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
3364 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
3365 "mixed-cell disabled - disassociate\n", dev
->name
);
3367 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
3368 ieee80211_set_disassoc(dev
, ifsta
, 0);
3373 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
3374 struct ieee80211_if_sta
*ifsta
)
3376 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3378 if (local
->ops
->reset_tsf
) {
3379 /* Reset own TSF to allow time synchronization work. */
3380 local
->ops
->reset_tsf(local_to_hw(local
));
3383 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
3386 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
3387 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3388 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
3389 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
3390 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
3391 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
3393 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3394 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
3396 ifsta
->auth_transaction
= -1;
3397 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
3398 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
3399 netif_carrier_off(dev
);
3403 void ieee80211_sta_req_auth(struct net_device
*dev
,
3404 struct ieee80211_if_sta
*ifsta
)
3406 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3407 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3409 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3412 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
3413 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
3414 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
3415 IEEE80211_STA_AUTO_SSID_SEL
))) {
3416 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3417 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3421 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
3422 const char *ssid
, int ssid_len
)
3424 int tmp
, hidden_ssid
;
3426 if (ssid_len
== ifsta
->ssid_len
&&
3427 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
3430 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
3436 if (ssid
[tmp
] != '\0') {
3442 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
3445 if (ssid_len
== 1 && ssid
[0] == ' ')
3451 static int ieee80211_sta_config_auth(struct net_device
*dev
,
3452 struct ieee80211_if_sta
*ifsta
)
3454 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3455 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3456 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
3457 int top_rssi
= 0, freq
;
3459 spin_lock_bh(&local
->sta_bss_lock
);
3460 freq
= local
->oper_channel
->center_freq
;
3461 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3462 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
3465 if ((ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
3466 IEEE80211_STA_AUTO_BSSID_SEL
|
3467 IEEE80211_STA_AUTO_CHANNEL_SEL
)) &&
3468 (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
3469 !!sdata
->default_key
))
3472 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
3476 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
3477 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
3480 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
3481 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
3484 if (!selected
|| top_rssi
< bss
->rssi
) {
3486 top_rssi
= bss
->rssi
;
3490 atomic_inc(&selected
->users
);
3491 spin_unlock_bh(&local
->sta_bss_lock
);
3494 ieee80211_set_freq(dev
, selected
->freq
);
3495 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
3496 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
3497 selected
->ssid_len
);
3498 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
3499 ieee80211_sta_def_wmm_params(dev
, selected
, 0);
3500 ieee80211_rx_bss_put(dev
, selected
);
3501 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3502 ieee80211_sta_reset_auth(dev
, ifsta
);
3505 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
3506 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
3507 ieee80211_sta_start_scan(dev
, NULL
, 0);
3509 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
3511 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3512 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3514 ifsta
->state
= IEEE80211_DISABLED
;
3520 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
3521 struct ieee80211_if_sta
*ifsta
)
3523 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3524 struct ieee80211_sta_bss
*bss
;
3525 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3526 struct ieee80211_supported_band
*sband
;
3527 u8 bssid
[ETH_ALEN
], *pos
;
3530 DECLARE_MAC_BUF(mac
);
3533 /* Easier testing, use fixed BSSID. */
3534 memset(bssid
, 0xfe, ETH_ALEN
);
3536 /* Generate random, not broadcast, locally administered BSSID. Mix in
3537 * own MAC address to make sure that devices that do not have proper
3538 * random number generator get different BSSID. */
3539 get_random_bytes(bssid
, ETH_ALEN
);
3540 for (i
= 0; i
< ETH_ALEN
; i
++)
3541 bssid
[i
] ^= dev
->dev_addr
[i
];
3546 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
3547 dev
->name
, print_mac(mac
, bssid
));
3549 bss
= ieee80211_rx_bss_add(dev
, bssid
,
3550 local
->hw
.conf
.channel
->center_freq
,
3551 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
3555 bss
->band
= local
->hw
.conf
.channel
->band
;
3556 sband
= local
->hw
.wiphy
->bands
[bss
->band
];
3558 if (local
->hw
.conf
.beacon_int
== 0)
3559 local
->hw
.conf
.beacon_int
= 10000;
3560 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
3561 bss
->last_update
= jiffies
;
3562 bss
->capability
= WLAN_CAPABILITY_IBSS
;
3563 if (sdata
->default_key
) {
3564 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
3566 sdata
->drop_unencrypted
= 0;
3567 bss
->supp_rates_len
= sband
->n_bitrates
;
3568 pos
= bss
->supp_rates
;
3569 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
3570 int rate
= sband
->bitrates
[i
].bitrate
;
3571 *pos
++ = (u8
) (rate
/ 5);
3574 ret
= ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3575 ieee80211_rx_bss_put(dev
, bss
);
3580 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
3581 struct ieee80211_if_sta
*ifsta
)
3583 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3584 struct ieee80211_sta_bss
*bss
;
3588 DECLARE_MAC_BUF(mac
);
3589 DECLARE_MAC_BUF(mac2
);
3591 if (ifsta
->ssid_len
== 0)
3594 active_ibss
= ieee80211_sta_active_ibss(dev
);
3595 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3596 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
3597 dev
->name
, active_ibss
);
3598 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3599 spin_lock_bh(&local
->sta_bss_lock
);
3600 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3601 if (ifsta
->ssid_len
!= bss
->ssid_len
||
3602 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
3603 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
3605 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3606 printk(KERN_DEBUG
" bssid=%s found\n",
3607 print_mac(mac
, bss
->bssid
));
3608 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3609 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
3611 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
3614 spin_unlock_bh(&local
->sta_bss_lock
);
3616 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3618 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
3619 "%s\n", print_mac(mac
, bssid
),
3620 print_mac(mac2
, ifsta
->bssid
));
3621 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3622 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
3623 (bss
= ieee80211_rx_bss_get(dev
, bssid
,
3624 local
->hw
.conf
.channel
->center_freq
,
3625 ifsta
->ssid
, ifsta
->ssid_len
))) {
3627 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
3628 " based on configured SSID\n",
3629 dev
->name
, print_mac(mac
, bssid
));
3630 ret
= ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3631 ieee80211_rx_bss_put(dev
, bss
);
3634 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3635 printk(KERN_DEBUG
" did not try to join ibss\n");
3636 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3638 /* Selected IBSS not found in current scan results - try to scan */
3639 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3640 !ieee80211_sta_active_ibss(dev
)) {
3641 mod_timer(&ifsta
->timer
, jiffies
+
3642 IEEE80211_IBSS_MERGE_INTERVAL
);
3643 } else if (time_after(jiffies
, local
->last_scan_completed
+
3644 IEEE80211_SCAN_INTERVAL
)) {
3645 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
3646 "join\n", dev
->name
);
3647 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
3649 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
3650 int interval
= IEEE80211_SCAN_INTERVAL
;
3652 if (time_after(jiffies
, ifsta
->ibss_join_req
+
3653 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
3654 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
3655 (!(local
->oper_channel
->flags
&
3656 IEEE80211_CHAN_NO_IBSS
)))
3657 return ieee80211_sta_create_ibss(dev
, ifsta
);
3658 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
3659 printk(KERN_DEBUG
"%s: IBSS not allowed on"
3660 " %d MHz\n", dev
->name
,
3661 local
->hw
.conf
.channel
->center_freq
);
3664 /* No IBSS found - decrease scan interval and continue
3666 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
3669 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3670 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
3678 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
3680 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3681 struct ieee80211_if_sta
*ifsta
;
3683 if (len
> IEEE80211_MAX_SSID_LEN
)
3686 ifsta
= &sdata
->u
.sta
;
3688 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
3689 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
3690 memcpy(ifsta
->ssid
, ssid
, len
);
3691 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
3692 ifsta
->ssid_len
= len
;
3695 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
3697 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
3698 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3699 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
3700 ifsta
->ibss_join_req
= jiffies
;
3701 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3702 return ieee80211_sta_find_ibss(dev
, ifsta
);
3708 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
3710 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3711 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3712 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
3713 *len
= ifsta
->ssid_len
;
3718 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
3720 struct ieee80211_sub_if_data
*sdata
;
3721 struct ieee80211_if_sta
*ifsta
;
3724 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3725 ifsta
= &sdata
->u
.sta
;
3727 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3728 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
3729 res
= ieee80211_if_config(dev
);
3731 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
3732 "the low-level driver\n", dev
->name
);
3737 if (is_valid_ether_addr(bssid
))
3738 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
3740 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
3746 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
3747 struct ieee80211_sub_if_data
*sdata
,
3750 struct sk_buff
*skb
;
3751 struct ieee80211_hdr
*nullfunc
;
3754 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
3756 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
3757 "frame\n", sdata
->dev
->name
);
3760 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3762 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
3763 memset(nullfunc
, 0, 24);
3764 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
3765 IEEE80211_FCTL_TODS
;
3767 fc
|= IEEE80211_FCTL_PM
;
3768 nullfunc
->frame_control
= cpu_to_le16(fc
);
3769 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3770 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
3771 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3773 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
3777 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data
*sdata
)
3779 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
||
3780 ieee80211_vif_is_mesh(&sdata
->vif
))
3781 ieee80211_sta_timer((unsigned long)sdata
);
3784 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
3786 struct ieee80211_local
*local
= hw_to_local(hw
);
3787 struct net_device
*dev
= local
->scan_dev
;
3788 struct ieee80211_sub_if_data
*sdata
;
3789 union iwreq_data wrqu
;
3791 local
->last_scan_completed
= jiffies
;
3792 memset(&wrqu
, 0, sizeof(wrqu
));
3793 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
3795 if (local
->sta_hw_scanning
) {
3796 local
->sta_hw_scanning
= 0;
3797 if (ieee80211_hw_config(local
))
3798 printk(KERN_DEBUG
"%s: failed to restore operational "
3799 "channel after scan\n", dev
->name
);
3800 /* Restart STA timer for HW scan case */
3802 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
)
3803 ieee80211_restart_sta_timer(sdata
);
3809 local
->sta_sw_scanning
= 0;
3810 if (ieee80211_hw_config(local
))
3811 printk(KERN_DEBUG
"%s: failed to restore operational "
3812 "channel after scan\n", dev
->name
);
3815 netif_tx_lock_bh(local
->mdev
);
3816 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
3817 local
->ops
->configure_filter(local_to_hw(local
),
3818 FIF_BCN_PRBRESP_PROMISC
,
3819 &local
->filter_flags
,
3820 local
->mdev
->mc_count
,
3821 local
->mdev
->mc_list
);
3823 netif_tx_unlock_bh(local
->mdev
);
3826 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3828 /* No need to wake the master device. */
3829 if (sdata
->dev
== local
->mdev
)
3832 /* Tell AP we're back */
3833 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3834 sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
3835 ieee80211_send_nullfunc(local
, sdata
, 0);
3837 ieee80211_restart_sta_timer(sdata
);
3839 netif_wake_queue(sdata
->dev
);
3844 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3845 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
3846 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3847 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
3848 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3849 !ieee80211_sta_active_ibss(dev
)))
3850 ieee80211_sta_find_ibss(dev
, ifsta
);
3853 EXPORT_SYMBOL(ieee80211_scan_completed
);
3855 void ieee80211_sta_scan_work(struct work_struct
*work
)
3857 struct ieee80211_local
*local
=
3858 container_of(work
, struct ieee80211_local
, scan_work
.work
);
3859 struct net_device
*dev
= local
->scan_dev
;
3860 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3861 struct ieee80211_supported_band
*sband
;
3862 struct ieee80211_channel
*chan
;
3864 unsigned long next_delay
= 0;
3866 if (!local
->sta_sw_scanning
)
3869 switch (local
->scan_state
) {
3870 case SCAN_SET_CHANNEL
:
3872 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
3873 * after we successfully scanned the last channel of the last
3874 * band (and the last band is supported by the hw)
3876 if (local
->scan_band
< IEEE80211_NUM_BANDS
)
3877 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3882 * If we are at an unsupported band and have more bands
3883 * left to scan, advance to the next supported one.
3885 while (!sband
&& local
->scan_band
< IEEE80211_NUM_BANDS
- 1) {
3887 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3888 local
->scan_channel_idx
= 0;
3891 /* if no more bands/channels left, complete scan */
3892 if (!sband
|| local
->scan_channel_idx
>= sband
->n_channels
) {
3893 ieee80211_scan_completed(local_to_hw(local
));
3897 chan
= &sband
->channels
[local
->scan_channel_idx
];
3899 if (chan
->flags
& IEEE80211_CHAN_DISABLED
||
3900 (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3901 chan
->flags
& IEEE80211_CHAN_NO_IBSS
))
3905 local
->scan_channel
= chan
;
3906 if (ieee80211_hw_config(local
)) {
3907 printk(KERN_DEBUG
"%s: failed to set freq to "
3908 "%d MHz for scan\n", dev
->name
,
3914 /* advance state machine to next channel/band */
3915 local
->scan_channel_idx
++;
3916 if (local
->scan_channel_idx
>= sband
->n_channels
) {
3918 * scan_band may end up == IEEE80211_NUM_BANDS, but
3919 * we'll catch that case above and complete the scan
3920 * if that is the case.
3923 local
->scan_channel_idx
= 0;
3929 next_delay
= IEEE80211_PROBE_DELAY
+
3930 usecs_to_jiffies(local
->hw
.channel_change_time
);
3931 local
->scan_state
= SCAN_SEND_PROBE
;
3933 case SCAN_SEND_PROBE
:
3934 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
3935 local
->scan_state
= SCAN_SET_CHANNEL
;
3937 if (local
->scan_channel
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)
3939 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
3940 local
->scan_ssid_len
);
3941 next_delay
= IEEE80211_CHANNEL_TIME
;
3945 if (local
->sta_sw_scanning
)
3946 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3951 static int ieee80211_sta_start_scan(struct net_device
*dev
,
3952 u8
*ssid
, size_t ssid_len
)
3954 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3955 struct ieee80211_sub_if_data
*sdata
;
3957 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
3960 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
3961 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
3964 * ScanType: ACTIVE, PASSIVE
3965 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
3966 * a Probe frame during active scanning
3968 * MinChannelTime (>= ProbeDelay), in TU
3969 * MaxChannelTime: (>= MinChannelTime), in TU
3972 /* MLME-SCAN.confirm
3974 * ResultCode: SUCCESS, INVALID_PARAMETERS
3977 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3978 if (local
->scan_dev
== dev
)
3983 if (local
->ops
->hw_scan
) {
3984 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
3987 local
->sta_hw_scanning
= 1;
3988 local
->scan_dev
= dev
;
3993 local
->sta_sw_scanning
= 1;
3996 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3998 /* Don't stop the master interface, otherwise we can't transmit
4000 if (sdata
->dev
== local
->mdev
)
4003 netif_stop_queue(sdata
->dev
);
4004 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
4005 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
4006 ieee80211_send_nullfunc(local
, sdata
, 1);
4011 local
->scan_ssid_len
= ssid_len
;
4012 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
4014 local
->scan_ssid_len
= 0;
4015 local
->scan_state
= SCAN_SET_CHANNEL
;
4016 local
->scan_channel_idx
= 0;
4017 local
->scan_band
= IEEE80211_BAND_2GHZ
;
4018 local
->scan_dev
= dev
;
4020 netif_tx_lock_bh(local
->mdev
);
4021 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
4022 local
->ops
->configure_filter(local_to_hw(local
),
4023 FIF_BCN_PRBRESP_PROMISC
,
4024 &local
->filter_flags
,
4025 local
->mdev
->mc_count
,
4026 local
->mdev
->mc_list
);
4027 netif_tx_unlock_bh(local
->mdev
);
4029 /* TODO: start scan as soon as all nullfunc frames are ACKed */
4030 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
4031 IEEE80211_CHANNEL_TIME
);
4037 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
4039 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4040 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4041 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4043 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4044 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
4046 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
4047 if (local
->scan_dev
== dev
)
4052 ifsta
->scan_ssid_len
= ssid_len
;
4054 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
4055 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
4056 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
4061 ieee80211_sta_scan_result(struct net_device
*dev
,
4062 struct ieee80211_sta_bss
*bss
,
4063 char *current_ev
, char *end_buf
)
4065 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4066 struct iw_event iwe
;
4068 if (time_after(jiffies
,
4069 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
4072 memset(&iwe
, 0, sizeof(iwe
));
4073 iwe
.cmd
= SIOCGIWAP
;
4074 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
4075 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
4076 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
4079 memset(&iwe
, 0, sizeof(iwe
));
4080 iwe
.cmd
= SIOCGIWESSID
;
4081 if (bss_mesh_cfg(bss
)) {
4082 iwe
.u
.data
.length
= bss_mesh_id_len(bss
);
4083 iwe
.u
.data
.flags
= 1;
4084 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
4087 iwe
.u
.data
.length
= bss
->ssid_len
;
4088 iwe
.u
.data
.flags
= 1;
4089 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
4093 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)
4094 || bss_mesh_cfg(bss
)) {
4095 memset(&iwe
, 0, sizeof(iwe
));
4096 iwe
.cmd
= SIOCGIWMODE
;
4097 if (bss_mesh_cfg(bss
))
4098 iwe
.u
.mode
= IW_MODE_MESH
;
4099 else if (bss
->capability
& WLAN_CAPABILITY_ESS
)
4100 iwe
.u
.mode
= IW_MODE_MASTER
;
4102 iwe
.u
.mode
= IW_MODE_ADHOC
;
4103 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
4107 memset(&iwe
, 0, sizeof(iwe
));
4108 iwe
.cmd
= SIOCGIWFREQ
;
4109 iwe
.u
.freq
.m
= ieee80211_frequency_to_channel(bss
->freq
);
4111 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
4114 memset(&iwe
, 0, sizeof(iwe
));
4115 iwe
.cmd
= SIOCGIWFREQ
;
4116 iwe
.u
.freq
.m
= bss
->freq
;
4118 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
4120 memset(&iwe
, 0, sizeof(iwe
));
4122 iwe
.u
.qual
.qual
= bss
->signal
;
4123 iwe
.u
.qual
.level
= bss
->rssi
;
4124 iwe
.u
.qual
.noise
= bss
->noise
;
4125 iwe
.u
.qual
.updated
= local
->wstats_flags
;
4126 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
4129 memset(&iwe
, 0, sizeof(iwe
));
4130 iwe
.cmd
= SIOCGIWENCODE
;
4131 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
4132 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
4134 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
4135 iwe
.u
.data
.length
= 0;
4136 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
4138 if (bss
&& bss
->wpa_ie
) {
4139 memset(&iwe
, 0, sizeof(iwe
));
4140 iwe
.cmd
= IWEVGENIE
;
4141 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
4142 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
4146 if (bss
&& bss
->rsn_ie
) {
4147 memset(&iwe
, 0, sizeof(iwe
));
4148 iwe
.cmd
= IWEVGENIE
;
4149 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
4150 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
4154 if (bss
&& bss
->supp_rates_len
> 0) {
4155 /* display all supported rates in readable format */
4156 char *p
= current_ev
+ IW_EV_LCP_LEN
;
4159 memset(&iwe
, 0, sizeof(iwe
));
4160 iwe
.cmd
= SIOCGIWRATE
;
4161 /* Those two flags are ignored... */
4162 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
4164 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
4165 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
4167 p
= iwe_stream_add_value(current_ev
, p
,
4168 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
4175 buf
= kmalloc(30, GFP_ATOMIC
);
4177 memset(&iwe
, 0, sizeof(iwe
));
4178 iwe
.cmd
= IWEVCUSTOM
;
4179 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
4180 iwe
.u
.data
.length
= strlen(buf
);
4181 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4187 if (bss_mesh_cfg(bss
)) {
4189 u8
*cfg
= bss_mesh_cfg(bss
);
4190 buf
= kmalloc(50, GFP_ATOMIC
);
4192 memset(&iwe
, 0, sizeof(iwe
));
4193 iwe
.cmd
= IWEVCUSTOM
;
4194 sprintf(buf
, "Mesh network (version %d)", cfg
[0]);
4195 iwe
.u
.data
.length
= strlen(buf
);
4196 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4198 sprintf(buf
, "Path Selection Protocol ID: "
4199 "0x%02X%02X%02X%02X", cfg
[1], cfg
[2], cfg
[3],
4201 iwe
.u
.data
.length
= strlen(buf
);
4202 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4204 sprintf(buf
, "Path Selection Metric ID: "
4205 "0x%02X%02X%02X%02X", cfg
[5], cfg
[6], cfg
[7],
4207 iwe
.u
.data
.length
= strlen(buf
);
4208 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4210 sprintf(buf
, "Congestion Control Mode ID: "
4211 "0x%02X%02X%02X%02X", cfg
[9], cfg
[10],
4213 iwe
.u
.data
.length
= strlen(buf
);
4214 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4216 sprintf(buf
, "Channel Precedence: "
4217 "0x%02X%02X%02X%02X", cfg
[13], cfg
[14],
4219 iwe
.u
.data
.length
= strlen(buf
);
4220 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4230 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
4232 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4233 char *current_ev
= buf
;
4234 char *end_buf
= buf
+ len
;
4235 struct ieee80211_sta_bss
*bss
;
4237 spin_lock_bh(&local
->sta_bss_lock
);
4238 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
4239 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
4240 spin_unlock_bh(&local
->sta_bss_lock
);
4243 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
4246 spin_unlock_bh(&local
->sta_bss_lock
);
4247 return current_ev
- buf
;
4251 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
4253 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4254 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4255 kfree(ifsta
->extra_ie
);
4257 ifsta
->extra_ie
= NULL
;
4258 ifsta
->extra_ie_len
= 0;
4261 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
4262 if (!ifsta
->extra_ie
) {
4263 ifsta
->extra_ie_len
= 0;
4266 memcpy(ifsta
->extra_ie
, ie
, len
);
4267 ifsta
->extra_ie_len
= len
;
4272 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
4273 struct sk_buff
*skb
, u8
*bssid
,
4276 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4277 struct sta_info
*sta
;
4278 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4279 DECLARE_MAC_BUF(mac
);
4281 /* TODO: Could consider removing the least recently used entry and
4282 * allow new one to be added. */
4283 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
4284 if (net_ratelimit()) {
4285 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
4286 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
4291 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
4292 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
4294 sta
= sta_info_alloc(sdata
, addr
, GFP_ATOMIC
);
4298 sta
->flags
|= WLAN_STA_AUTHORIZED
;
4300 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] =
4301 sdata
->u
.sta
.supp_rates_bits
[local
->hw
.conf
.channel
->band
];
4303 rate_control_rate_init(sta
, local
);
4305 if (sta_info_insert(sta
))
4312 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
4314 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4315 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4317 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
4320 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
4321 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
4324 ieee80211_send_deauth(dev
, ifsta
, reason
);
4325 ieee80211_set_disassoc(dev
, ifsta
, 1);
4330 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
4332 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4333 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4335 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
4338 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4341 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
4344 ieee80211_send_disassoc(dev
, ifsta
, reason
);
4345 ieee80211_set_disassoc(dev
, ifsta
, 0);
4349 void ieee80211_notify_mac(struct ieee80211_hw
*hw
,
4350 enum ieee80211_notification_types notif_type
)
4352 struct ieee80211_local
*local
= hw_to_local(hw
);
4353 struct ieee80211_sub_if_data
*sdata
;
4355 switch (notif_type
) {
4356 case IEEE80211_NOTIFY_RE_ASSOC
:
4358 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
4360 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
) {
4361 ieee80211_sta_req_auth(sdata
->dev
,
4370 EXPORT_SYMBOL(ieee80211_notify_mac
);