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>
30 #include <asm/unaligned.h>
32 #include <net/mac80211.h>
33 #include "ieee80211_i.h"
34 #include "ieee80211_rate.h"
35 #include "ieee80211_led.h"
38 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
39 #define IEEE80211_AUTH_MAX_TRIES 3
40 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
41 #define IEEE80211_ASSOC_MAX_TRIES 3
42 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
43 #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
44 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
45 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
46 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
47 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
48 #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
50 #define IEEE80211_PROBE_DELAY (HZ / 33)
51 #define IEEE80211_CHANNEL_TIME (HZ / 33)
52 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
53 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
54 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
55 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
56 #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
58 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
61 #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
63 #define ERP_INFO_USE_PROTECTION BIT(1)
65 /* mgmt header + 1 byte action code */
66 #define IEEE80211_MIN_ACTION_SIZE (24 + 1)
68 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
69 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
70 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
71 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
72 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
74 /* next values represent the buffer size for A-MPDU frame.
75 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
76 #define IEEE80211_MIN_AMPDU_BUF 0x8
77 #define IEEE80211_MAX_AMPDU_BUF 0x40
79 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
80 u8
*ssid
, size_t ssid_len
);
81 static struct ieee80211_sta_bss
*
82 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
83 u8
*ssid
, u8 ssid_len
);
84 static void ieee80211_rx_bss_put(struct net_device
*dev
,
85 struct ieee80211_sta_bss
*bss
);
86 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
87 struct ieee80211_if_sta
*ifsta
);
88 static int ieee80211_sta_wep_configured(struct net_device
*dev
);
89 static int ieee80211_sta_start_scan(struct net_device
*dev
,
90 u8
*ssid
, size_t ssid_len
);
91 static int ieee80211_sta_config_auth(struct net_device
*dev
,
92 struct ieee80211_if_sta
*ifsta
);
95 void ieee802_11_parse_elems(u8
*start
, size_t len
,
96 struct ieee802_11_elems
*elems
)
101 memset(elems
, 0, sizeof(*elems
));
116 elems
->ssid_len
= elen
;
118 case WLAN_EID_SUPP_RATES
:
119 elems
->supp_rates
= pos
;
120 elems
->supp_rates_len
= elen
;
122 case WLAN_EID_FH_PARAMS
:
123 elems
->fh_params
= pos
;
124 elems
->fh_params_len
= elen
;
126 case WLAN_EID_DS_PARAMS
:
127 elems
->ds_params
= pos
;
128 elems
->ds_params_len
= elen
;
130 case WLAN_EID_CF_PARAMS
:
131 elems
->cf_params
= pos
;
132 elems
->cf_params_len
= elen
;
136 elems
->tim_len
= elen
;
138 case WLAN_EID_IBSS_PARAMS
:
139 elems
->ibss_params
= pos
;
140 elems
->ibss_params_len
= elen
;
142 case WLAN_EID_CHALLENGE
:
143 elems
->challenge
= pos
;
144 elems
->challenge_len
= elen
;
147 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
149 /* Microsoft OUI (00:50:F2) */
151 /* OUI Type 1 - WPA IE */
153 elems
->wpa_len
= elen
;
154 } else if (elen
>= 5 && pos
[3] == 2) {
156 elems
->wmm_info
= pos
;
157 elems
->wmm_info_len
= elen
;
158 } else if (pos
[4] == 1) {
159 elems
->wmm_param
= pos
;
160 elems
->wmm_param_len
= elen
;
167 elems
->rsn_len
= elen
;
169 case WLAN_EID_ERP_INFO
:
170 elems
->erp_info
= pos
;
171 elems
->erp_info_len
= elen
;
173 case WLAN_EID_EXT_SUPP_RATES
:
174 elems
->ext_supp_rates
= pos
;
175 elems
->ext_supp_rates_len
= elen
;
177 case WLAN_EID_HT_CAPABILITY
:
178 elems
->ht_cap_elem
= pos
;
179 elems
->ht_cap_elem_len
= elen
;
181 case WLAN_EID_HT_EXTRA_INFO
:
182 elems
->ht_info_elem
= pos
;
183 elems
->ht_info_elem_len
= elen
;
185 case WLAN_EID_MESH_ID
:
186 elems
->mesh_id
= pos
;
187 elems
->mesh_id_len
= elen
;
189 case WLAN_EID_MESH_CONFIG
:
190 elems
->mesh_config
= pos
;
191 elems
->mesh_config_len
= elen
;
193 case WLAN_EID_PEER_LINK
:
194 elems
->peer_link
= pos
;
195 elems
->peer_link_len
= elen
;
199 elems
->preq_len
= elen
;
203 elems
->prep_len
= elen
;
207 elems
->perr_len
= elen
;
219 static int ecw2cw(int ecw
)
221 return (1 << ecw
) - 1;
225 static void ieee80211_sta_def_wmm_params(struct net_device
*dev
,
226 struct ieee80211_sta_bss
*bss
,
229 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
230 struct ieee80211_local
*local
= sdata
->local
;
231 int i
, have_higher_than_11mbit
= 0;
234 /* cf. IEEE 802.11 9.2.12 */
235 for (i
= 0; i
< bss
->supp_rates_len
; i
++)
236 if ((bss
->supp_rates
[i
] & 0x7f) * 5 > 110)
237 have_higher_than_11mbit
= 1;
239 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
240 have_higher_than_11mbit
)
241 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
243 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
246 if (local
->ops
->conf_tx
) {
247 struct ieee80211_tx_queue_params qparam
;
249 memset(&qparam
, 0, sizeof(qparam
));
253 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
254 !(sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
))
259 qparam
.cw_max
= 1023;
262 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
263 local
->ops
->conf_tx(local_to_hw(local
),
264 i
+ IEEE80211_TX_QUEUE_DATA0
,
268 /* IBSS uses different parameters for Beacon sending */
272 local
->ops
->conf_tx(local_to_hw(local
),
273 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
278 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
279 struct ieee80211_if_sta
*ifsta
,
280 u8
*wmm_param
, size_t wmm_param_len
)
282 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
283 struct ieee80211_tx_queue_params params
;
288 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
290 count
= wmm_param
[6] & 0x0f;
291 if (count
== ifsta
->wmm_last_param_set
)
293 ifsta
->wmm_last_param_set
= count
;
296 left
= wmm_param_len
- 8;
298 memset(¶ms
, 0, sizeof(params
));
300 if (!local
->ops
->conf_tx
)
304 for (; left
>= 4; left
-= 4, pos
+= 4) {
305 int aci
= (pos
[0] >> 5) & 0x03;
306 int acm
= (pos
[0] >> 4) & 0x01;
311 queue
= IEEE80211_TX_QUEUE_DATA3
;
313 local
->wmm_acm
|= BIT(0) | BIT(3);
317 queue
= IEEE80211_TX_QUEUE_DATA1
;
319 local
->wmm_acm
|= BIT(4) | BIT(5);
323 queue
= IEEE80211_TX_QUEUE_DATA0
;
325 local
->wmm_acm
|= BIT(6) | BIT(7);
330 queue
= IEEE80211_TX_QUEUE_DATA2
;
332 local
->wmm_acm
|= BIT(1) | BIT(2);
337 params
.aifs
= pos
[0] & 0x0f;
338 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
339 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
340 params
.txop
= pos
[2] | (pos
[3] << 8);
341 #ifdef CONFIG_MAC80211_DEBUG
342 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
343 "cWmin=%d cWmax=%d txop=%d\n",
344 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
345 params
.cw_max
, params
.txop
);
347 /* TODO: handle ACM (block TX, fallback to next lowest allowed
349 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
350 printk(KERN_DEBUG
"%s: failed to set TX queue "
351 "parameters for queue %d\n", dev
->name
, queue
);
357 static u32
ieee80211_handle_erp_ie(struct ieee80211_sub_if_data
*sdata
,
360 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
361 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
362 bool use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
363 bool use_short_preamble
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) == 0;
364 DECLARE_MAC_BUF(mac
);
367 if (use_protection
!= bss_conf
->use_cts_prot
) {
368 if (net_ratelimit()) {
369 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
372 use_protection
? "enabled" : "disabled",
373 print_mac(mac
, ifsta
->bssid
));
375 bss_conf
->use_cts_prot
= use_protection
;
376 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
379 if (use_short_preamble
!= bss_conf
->use_short_preamble
) {
380 if (net_ratelimit()) {
381 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
384 use_short_preamble
? "short" : "long",
385 print_mac(mac
, ifsta
->bssid
));
387 bss_conf
->use_short_preamble
= use_short_preamble
;
388 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
394 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap
*ht_cap_ie
,
395 struct ieee80211_ht_info
*ht_info
)
401 memset(ht_info
, 0, sizeof(*ht_info
));
404 u8 ampdu_info
= ht_cap_ie
->ampdu_params_info
;
406 ht_info
->ht_supported
= 1;
407 ht_info
->cap
= le16_to_cpu(ht_cap_ie
->cap_info
);
408 ht_info
->ampdu_factor
=
409 ampdu_info
& IEEE80211_HT_CAP_AMPDU_FACTOR
;
410 ht_info
->ampdu_density
=
411 (ampdu_info
& IEEE80211_HT_CAP_AMPDU_DENSITY
) >> 2;
412 memcpy(ht_info
->supp_mcs_set
, ht_cap_ie
->supp_mcs_set
, 16);
414 ht_info
->ht_supported
= 0;
419 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
420 struct ieee80211_ht_addt_info
*ht_add_info_ie
,
421 struct ieee80211_ht_bss_info
*bss_info
)
423 if (bss_info
== NULL
)
426 memset(bss_info
, 0, sizeof(*bss_info
));
428 if (ht_add_info_ie
) {
430 op_mode
= le16_to_cpu(ht_add_info_ie
->operation_mode
);
432 bss_info
->primary_channel
= ht_add_info_ie
->control_chan
;
433 bss_info
->bss_cap
= ht_add_info_ie
->ht_param
;
434 bss_info
->bss_op_mode
= (u8
)(op_mode
& 0xff);
440 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
441 struct ieee80211_if_sta
*ifsta
)
446 union iwreq_data wrqu
;
448 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
451 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
452 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
456 len
= sprintf(buf
, "ASSOCINFO(");
457 if (ifsta
->assocreq_ies
) {
458 len
+= sprintf(buf
+ len
, "ReqIEs=");
459 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
460 len
+= sprintf(buf
+ len
, "%02x",
461 ifsta
->assocreq_ies
[i
]);
464 if (ifsta
->assocresp_ies
) {
465 if (ifsta
->assocreq_ies
)
466 len
+= sprintf(buf
+ len
, " ");
467 len
+= sprintf(buf
+ len
, "RespIEs=");
468 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
469 len
+= sprintf(buf
+ len
, "%02x",
470 ifsta
->assocresp_ies
[i
]);
473 len
+= sprintf(buf
+ len
, ")");
475 if (len
> IW_CUSTOM_MAX
) {
476 len
= sprintf(buf
, "ASSOCRESPIE=");
477 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
478 len
+= sprintf(buf
+ len
, "%02x",
479 ifsta
->assocresp_ies
[i
]);
483 memset(&wrqu
, 0, sizeof(wrqu
));
484 wrqu
.data
.length
= len
;
485 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
491 static void ieee80211_set_associated(struct net_device
*dev
,
492 struct ieee80211_if_sta
*ifsta
,
495 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
496 struct ieee80211_local
*local
= sdata
->local
;
497 union iwreq_data wrqu
;
498 u32 changed
= BSS_CHANGED_ASSOC
;
501 struct ieee80211_sta_bss
*bss
;
503 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
505 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
508 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
509 local
->hw
.conf
.channel
->center_freq
,
510 ifsta
->ssid
, ifsta
->ssid_len
);
512 if (bss
->has_erp_value
)
513 changed
|= ieee80211_handle_erp_ie(
514 sdata
, bss
->erp_value
);
515 ieee80211_rx_bss_put(dev
, bss
);
518 netif_carrier_on(dev
);
519 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
520 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
521 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
522 ieee80211_sta_send_associnfo(dev
, ifsta
);
524 ieee80211_sta_tear_down_BA_sessions(dev
, ifsta
->bssid
);
525 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
526 netif_carrier_off(dev
);
527 ieee80211_reset_erp_info(dev
);
528 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
530 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
531 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
532 ifsta
->last_probe
= jiffies
;
533 ieee80211_led_assoc(local
, assoc
);
535 sdata
->bss_conf
.assoc
= assoc
;
536 ieee80211_bss_info_change_notify(sdata
, changed
);
539 static void ieee80211_set_disassoc(struct net_device
*dev
,
540 struct ieee80211_if_sta
*ifsta
, int deauth
)
543 ifsta
->auth_tries
= 0;
544 ifsta
->assoc_tries
= 0;
545 ieee80211_set_associated(dev
, ifsta
, 0);
548 void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
551 struct ieee80211_sub_if_data
*sdata
;
552 struct ieee80211_tx_packet_data
*pkt_data
;
554 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
555 skb
->dev
= sdata
->local
->mdev
;
556 skb_set_mac_header(skb
, 0);
557 skb_set_network_header(skb
, 0);
558 skb_set_transport_header(skb
, 0);
560 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
561 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
562 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
564 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
570 static void ieee80211_send_auth(struct net_device
*dev
,
571 struct ieee80211_if_sta
*ifsta
,
572 int transaction
, u8
*extra
, size_t extra_len
,
575 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
577 struct ieee80211_mgmt
*mgmt
;
579 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
580 sizeof(*mgmt
) + 6 + extra_len
);
582 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
583 "frame\n", dev
->name
);
586 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
588 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
589 memset(mgmt
, 0, 24 + 6);
590 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
591 IEEE80211_STYPE_AUTH
);
593 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
594 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
595 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
596 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
597 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
598 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
599 ifsta
->auth_transaction
= transaction
+ 1;
600 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
602 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
604 ieee80211_sta_tx(dev
, skb
, encrypt
);
608 static void ieee80211_authenticate(struct net_device
*dev
,
609 struct ieee80211_if_sta
*ifsta
)
611 DECLARE_MAC_BUF(mac
);
614 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
615 printk(KERN_DEBUG
"%s: authentication with AP %s"
617 dev
->name
, print_mac(mac
, ifsta
->bssid
));
618 ifsta
->state
= IEEE80211_DISABLED
;
622 ifsta
->state
= IEEE80211_AUTHENTICATE
;
623 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
624 dev
->name
, print_mac(mac
, ifsta
->bssid
));
626 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
628 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
632 static void ieee80211_send_assoc(struct net_device
*dev
,
633 struct ieee80211_if_sta
*ifsta
)
635 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
637 struct ieee80211_mgmt
*mgmt
;
641 struct ieee80211_sta_bss
*bss
;
643 struct ieee80211_supported_band
*sband
;
645 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
646 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
649 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
650 "frame\n", dev
->name
);
653 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
655 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
657 capab
= ifsta
->capab
;
659 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
) {
660 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
))
661 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
662 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
))
663 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
666 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
667 local
->hw
.conf
.channel
->center_freq
,
668 ifsta
->ssid
, ifsta
->ssid_len
);
670 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
671 capab
|= WLAN_CAPABILITY_PRIVACY
;
675 ieee80211_rx_bss_put(dev
, bss
);
678 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
680 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
681 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
682 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
684 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
686 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
687 IEEE80211_STYPE_REASSOC_REQ
);
688 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
689 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
690 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
694 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
695 IEEE80211_STYPE_ASSOC_REQ
);
696 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
697 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
701 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
702 *pos
++ = WLAN_EID_SSID
;
703 *pos
++ = ifsta
->ssid_len
;
704 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
706 len
= sband
->n_bitrates
;
709 pos
= skb_put(skb
, len
+ 2);
710 *pos
++ = WLAN_EID_SUPP_RATES
;
712 for (i
= 0; i
< len
; i
++) {
713 int rate
= sband
->bitrates
[i
].bitrate
;
714 *pos
++ = (u8
) (rate
/ 5);
717 if (sband
->n_bitrates
> len
) {
718 pos
= skb_put(skb
, sband
->n_bitrates
- len
+ 2);
719 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
720 *pos
++ = sband
->n_bitrates
- len
;
721 for (i
= len
; i
< sband
->n_bitrates
; i
++) {
722 int rate
= sband
->bitrates
[i
].bitrate
;
723 *pos
++ = (u8
) (rate
/ 5);
727 if (ifsta
->extra_ie
) {
728 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
729 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
732 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
733 pos
= skb_put(skb
, 9);
734 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
735 *pos
++ = 7; /* len */
736 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
739 *pos
++ = 2; /* WME */
740 *pos
++ = 0; /* WME info */
741 *pos
++ = 1; /* WME ver */
744 /* wmm support is a must to HT */
745 if (wmm
&& sband
->ht_info
.ht_supported
) {
746 __le16 tmp
= cpu_to_le16(sband
->ht_info
.cap
);
747 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
)+2);
748 *pos
++ = WLAN_EID_HT_CAPABILITY
;
749 *pos
++ = sizeof(struct ieee80211_ht_cap
);
750 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
751 memcpy(pos
, &tmp
, sizeof(u16
));
753 /* TODO: needs a define here for << 2 */
754 *pos
++ = sband
->ht_info
.ampdu_factor
|
755 (sband
->ht_info
.ampdu_density
<< 2);
756 memcpy(pos
, sband
->ht_info
.supp_mcs_set
, 16);
759 kfree(ifsta
->assocreq_ies
);
760 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
761 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
762 if (ifsta
->assocreq_ies
)
763 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
765 ieee80211_sta_tx(dev
, skb
, 0);
769 static void ieee80211_send_deauth(struct net_device
*dev
,
770 struct ieee80211_if_sta
*ifsta
, u16 reason
)
772 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
774 struct ieee80211_mgmt
*mgmt
;
776 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
778 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
779 "frame\n", dev
->name
);
782 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
784 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
786 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
787 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
788 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
789 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
790 IEEE80211_STYPE_DEAUTH
);
792 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
794 ieee80211_sta_tx(dev
, skb
, 0);
798 static void ieee80211_send_disassoc(struct net_device
*dev
,
799 struct ieee80211_if_sta
*ifsta
, u16 reason
)
801 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
803 struct ieee80211_mgmt
*mgmt
;
805 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
807 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
808 "frame\n", dev
->name
);
811 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
813 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
815 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
816 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
817 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
818 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
819 IEEE80211_STYPE_DISASSOC
);
821 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
823 ieee80211_sta_tx(dev
, skb
, 0);
827 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
828 struct ieee80211_if_sta
*ifsta
)
830 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
831 struct ieee80211_sta_bss
*bss
;
836 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
839 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
840 local
->hw
.conf
.channel
->center_freq
,
841 ifsta
->ssid
, ifsta
->ssid_len
);
845 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
846 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
847 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
849 ieee80211_rx_bss_put(dev
, bss
);
851 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
858 static void ieee80211_associate(struct net_device
*dev
,
859 struct ieee80211_if_sta
*ifsta
)
861 DECLARE_MAC_BUF(mac
);
863 ifsta
->assoc_tries
++;
864 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
865 printk(KERN_DEBUG
"%s: association with AP %s"
867 dev
->name
, print_mac(mac
, ifsta
->bssid
));
868 ifsta
->state
= IEEE80211_DISABLED
;
872 ifsta
->state
= IEEE80211_ASSOCIATE
;
873 printk(KERN_DEBUG
"%s: associate with AP %s\n",
874 dev
->name
, print_mac(mac
, ifsta
->bssid
));
875 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
876 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
877 "mixed-cell disabled - abort association\n", dev
->name
);
878 ifsta
->state
= IEEE80211_DISABLED
;
882 ieee80211_send_assoc(dev
, ifsta
);
884 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
888 static void ieee80211_associated(struct net_device
*dev
,
889 struct ieee80211_if_sta
*ifsta
)
891 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
892 struct sta_info
*sta
;
894 DECLARE_MAC_BUF(mac
);
896 /* TODO: start monitoring current AP signal quality and number of
897 * missed beacons. Scan other channels every now and then and search
899 /* TODO: remove expired BSSes */
901 ifsta
->state
= IEEE80211_ASSOCIATED
;
905 sta
= sta_info_get(local
, ifsta
->bssid
);
907 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
908 dev
->name
, print_mac(mac
, ifsta
->bssid
));
912 if (time_after(jiffies
,
913 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
914 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
915 printk(KERN_DEBUG
"%s: No ProbeResp from "
916 "current AP %s - assume out of "
918 dev
->name
, print_mac(mac
, ifsta
->bssid
));
920 sta_info_unlink(&sta
);
922 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
924 local
->scan_ssid_len
);
925 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
927 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
928 if (time_after(jiffies
, ifsta
->last_probe
+
929 IEEE80211_PROBE_INTERVAL
)) {
930 ifsta
->last_probe
= jiffies
;
931 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
940 if (disassoc
&& sta
) {
942 sta_info_destroy(sta
);
947 ifsta
->state
= IEEE80211_DISABLED
;
948 ieee80211_set_associated(dev
, ifsta
, 0);
950 mod_timer(&ifsta
->timer
, jiffies
+
951 IEEE80211_MONITORING_INTERVAL
);
956 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
957 u8
*ssid
, size_t ssid_len
)
959 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
960 struct ieee80211_supported_band
*sband
;
962 struct ieee80211_mgmt
*mgmt
;
963 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
966 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
968 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
969 "request\n", dev
->name
);
972 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
974 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
976 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
977 IEEE80211_STYPE_PROBE_REQ
);
978 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
980 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
981 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
983 memset(mgmt
->da
, 0xff, ETH_ALEN
);
984 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
986 pos
= skb_put(skb
, 2 + ssid_len
);
987 *pos
++ = WLAN_EID_SSID
;
989 memcpy(pos
, ssid
, ssid_len
);
991 supp_rates
= skb_put(skb
, 2);
992 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
994 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
996 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
997 struct ieee80211_rate
*rate
= &sband
->bitrates
[i
];
999 pos
= skb_put(skb
, 1);
1001 } else if (supp_rates
[1] == 8) {
1002 esupp_rates
= skb_put(skb
, 3);
1003 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
1005 pos
= &esupp_rates
[2];
1007 pos
= skb_put(skb
, 1);
1010 *pos
= rate
->bitrate
/ 5;
1013 ieee80211_sta_tx(dev
, skb
, 0);
1017 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
1019 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1020 if (!sdata
|| !sdata
->default_key
||
1021 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
1027 static void ieee80211_auth_completed(struct net_device
*dev
,
1028 struct ieee80211_if_sta
*ifsta
)
1030 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
1031 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
1032 ieee80211_associate(dev
, ifsta
);
1036 static void ieee80211_auth_challenge(struct net_device
*dev
,
1037 struct ieee80211_if_sta
*ifsta
,
1038 struct ieee80211_mgmt
*mgmt
,
1042 struct ieee802_11_elems elems
;
1044 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
1045 pos
= mgmt
->u
.auth
.variable
;
1046 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1047 if (!elems
.challenge
) {
1048 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
1049 "frame\n", dev
->name
);
1052 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
1053 elems
.challenge_len
+ 2, 1);
1056 static void ieee80211_send_addba_resp(struct net_device
*dev
, u8
*da
, u16 tid
,
1057 u8 dialog_token
, u16 status
, u16 policy
,
1058 u16 buf_size
, u16 timeout
)
1060 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1061 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1062 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1063 struct sk_buff
*skb
;
1064 struct ieee80211_mgmt
*mgmt
;
1067 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1068 sizeof(mgmt
->u
.action
.u
.addba_resp
));
1070 printk(KERN_DEBUG
"%s: failed to allocate buffer "
1071 "for addba resp frame\n", dev
->name
);
1075 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1076 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1077 memset(mgmt
, 0, 24);
1078 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1079 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1080 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1081 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1083 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1084 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1085 IEEE80211_STYPE_ACTION
);
1087 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
1088 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1089 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
1090 mgmt
->u
.action
.u
.addba_resp
.dialog_token
= dialog_token
;
1092 capab
= (u16
)(policy
<< 1); /* bit 1 aggregation policy */
1093 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1094 capab
|= (u16
)(buf_size
<< 6); /* bit 15:6 max size of aggregation */
1096 mgmt
->u
.action
.u
.addba_resp
.capab
= cpu_to_le16(capab
);
1097 mgmt
->u
.action
.u
.addba_resp
.timeout
= cpu_to_le16(timeout
);
1098 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
1100 ieee80211_sta_tx(dev
, skb
, 0);
1105 void ieee80211_send_addba_request(struct net_device
*dev
, const u8
*da
,
1106 u16 tid
, u8 dialog_token
, u16 start_seq_num
,
1107 u16 agg_size
, u16 timeout
)
1109 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1110 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1111 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1112 struct sk_buff
*skb
;
1113 struct ieee80211_mgmt
*mgmt
;
1116 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1117 sizeof(mgmt
->u
.action
.u
.addba_req
));
1121 printk(KERN_ERR
"%s: failed to allocate buffer "
1122 "for addba request frame\n", dev
->name
);
1125 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1126 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1127 memset(mgmt
, 0, 24);
1128 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1129 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1130 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1131 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1133 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1135 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1136 IEEE80211_STYPE_ACTION
);
1138 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_req
));
1140 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1141 mgmt
->u
.action
.u
.addba_req
.action_code
= WLAN_ACTION_ADDBA_REQ
;
1143 mgmt
->u
.action
.u
.addba_req
.dialog_token
= dialog_token
;
1144 capab
= (u16
)(1 << 1); /* bit 1 aggregation policy */
1145 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1146 capab
|= (u16
)(agg_size
<< 6); /* bit 15:6 max size of aggergation */
1148 mgmt
->u
.action
.u
.addba_req
.capab
= cpu_to_le16(capab
);
1150 mgmt
->u
.action
.u
.addba_req
.timeout
= cpu_to_le16(timeout
);
1151 mgmt
->u
.action
.u
.addba_req
.start_seq_num
=
1152 cpu_to_le16(start_seq_num
<< 4);
1154 ieee80211_sta_tx(dev
, skb
, 0);
1157 static void ieee80211_sta_process_addba_request(struct net_device
*dev
,
1158 struct ieee80211_mgmt
*mgmt
,
1161 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1162 struct ieee80211_hw
*hw
= &local
->hw
;
1163 struct ieee80211_conf
*conf
= &hw
->conf
;
1164 struct sta_info
*sta
;
1165 struct tid_ampdu_rx
*tid_agg_rx
;
1166 u16 capab
, tid
, timeout
, ba_policy
, buf_size
, start_seq_num
, status
;
1168 int ret
= -EOPNOTSUPP
;
1169 DECLARE_MAC_BUF(mac
);
1173 sta
= sta_info_get(local
, mgmt
->sa
);
1179 /* extract session parameters from addba request frame */
1180 dialog_token
= mgmt
->u
.action
.u
.addba_req
.dialog_token
;
1181 timeout
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.timeout
);
1183 le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.start_seq_num
) >> 4;
1185 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.capab
);
1186 ba_policy
= (capab
& IEEE80211_ADDBA_PARAM_POLICY_MASK
) >> 1;
1187 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1188 buf_size
= (capab
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
) >> 6;
1190 status
= WLAN_STATUS_REQUEST_DECLINED
;
1192 /* sanity check for incoming parameters:
1193 * check if configuration can support the BA policy
1194 * and if buffer size does not exceeds max value */
1195 if (((ba_policy
!= 1)
1196 && (!(conf
->ht_conf
.cap
& IEEE80211_HT_CAP_DELAY_BA
)))
1197 || (buf_size
> IEEE80211_MAX_AMPDU_BUF
)) {
1198 status
= WLAN_STATUS_INVALID_QOS_PARAM
;
1199 #ifdef CONFIG_MAC80211_HT_DEBUG
1200 if (net_ratelimit())
1201 printk(KERN_DEBUG
"AddBA Req with bad params from "
1202 "%s on tid %u. policy %d, buffer size %d\n",
1203 print_mac(mac
, mgmt
->sa
), tid
, ba_policy
,
1205 #endif /* CONFIG_MAC80211_HT_DEBUG */
1208 /* determine default buffer size */
1209 if (buf_size
== 0) {
1210 struct ieee80211_supported_band
*sband
;
1212 sband
= local
->hw
.wiphy
->bands
[conf
->channel
->band
];
1213 buf_size
= IEEE80211_MIN_AMPDU_BUF
;
1214 buf_size
= buf_size
<< sband
->ht_info
.ampdu_factor
;
1218 /* examine state machine */
1219 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1221 if (sta
->ampdu_mlme
.tid_state_rx
[tid
] != HT_AGG_STATE_IDLE
) {
1222 #ifdef CONFIG_MAC80211_HT_DEBUG
1223 if (net_ratelimit())
1224 printk(KERN_DEBUG
"unexpected AddBA Req from "
1226 print_mac(mac
, mgmt
->sa
), tid
);
1227 #endif /* CONFIG_MAC80211_HT_DEBUG */
1231 /* prepare A-MPDU MLME for Rx aggregation */
1232 sta
->ampdu_mlme
.tid_rx
[tid
] =
1233 kmalloc(sizeof(struct tid_ampdu_rx
), GFP_ATOMIC
);
1234 if (!sta
->ampdu_mlme
.tid_rx
[tid
]) {
1235 if (net_ratelimit())
1236 printk(KERN_ERR
"allocate rx mlme to tid %d failed\n",
1241 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.function
=
1242 sta_rx_agg_session_timer_expired
;
1243 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.data
=
1244 (unsigned long)&sta
->timer_to_tid
[tid
];
1245 init_timer(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1247 tid_agg_rx
= sta
->ampdu_mlme
.tid_rx
[tid
];
1249 /* prepare reordering buffer */
1250 tid_agg_rx
->reorder_buf
=
1251 kmalloc(buf_size
* sizeof(struct sk_buf
*), GFP_ATOMIC
);
1252 if (!tid_agg_rx
->reorder_buf
) {
1253 if (net_ratelimit())
1254 printk(KERN_ERR
"can not allocate reordering buffer "
1255 "to tid %d\n", tid
);
1256 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1259 memset(tid_agg_rx
->reorder_buf
, 0,
1260 buf_size
* sizeof(struct sk_buf
*));
1262 if (local
->ops
->ampdu_action
)
1263 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_START
,
1264 sta
->addr
, tid
, &start_seq_num
);
1265 #ifdef CONFIG_MAC80211_HT_DEBUG
1266 printk(KERN_DEBUG
"Rx A-MPDU on tid %d result %d", tid
, ret
);
1267 #endif /* CONFIG_MAC80211_HT_DEBUG */
1270 kfree(tid_agg_rx
->reorder_buf
);
1272 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1276 /* change state and send addba resp */
1277 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_OPERATIONAL
;
1278 tid_agg_rx
->dialog_token
= dialog_token
;
1279 tid_agg_rx
->ssn
= start_seq_num
;
1280 tid_agg_rx
->head_seq_num
= start_seq_num
;
1281 tid_agg_rx
->buf_size
= buf_size
;
1282 tid_agg_rx
->timeout
= timeout
;
1283 tid_agg_rx
->stored_mpdu_num
= 0;
1284 status
= WLAN_STATUS_SUCCESS
;
1286 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1289 ieee80211_send_addba_resp(sta
->sdata
->dev
, sta
->addr
, tid
,
1290 dialog_token
, status
, 1, buf_size
, timeout
);
1294 static void ieee80211_sta_process_addba_resp(struct net_device
*dev
,
1295 struct ieee80211_mgmt
*mgmt
,
1298 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1299 struct ieee80211_hw
*hw
= &local
->hw
;
1300 struct sta_info
*sta
;
1307 sta
= sta_info_get(local
, mgmt
->sa
);
1313 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.capab
);
1314 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1316 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1318 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1320 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1321 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1322 printk(KERN_DEBUG
"state not HT_ADDBA_REQUESTED_MSK:"
1324 goto addba_resp_exit
;
1327 if (mgmt
->u
.action
.u
.addba_resp
.dialog_token
!=
1328 sta
->ampdu_mlme
.tid_tx
[tid
]->dialog_token
) {
1329 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1330 #ifdef CONFIG_MAC80211_HT_DEBUG
1331 printk(KERN_DEBUG
"wrong addBA response token, tid %d\n", tid
);
1332 #endif /* CONFIG_MAC80211_HT_DEBUG */
1333 goto addba_resp_exit
;
1336 del_timer_sync(&sta
->ampdu_mlme
.tid_tx
[tid
]->addba_resp_timer
);
1337 #ifdef CONFIG_MAC80211_HT_DEBUG
1338 printk(KERN_DEBUG
"switched off addBA timer for tid %d \n", tid
);
1339 #endif /* CONFIG_MAC80211_HT_DEBUG */
1340 if (le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.status
)
1341 == WLAN_STATUS_SUCCESS
) {
1342 if (*state
& HT_ADDBA_RECEIVED_MSK
)
1343 printk(KERN_DEBUG
"double addBA response\n");
1345 *state
|= HT_ADDBA_RECEIVED_MSK
;
1346 sta
->ampdu_mlme
.addba_req_num
[tid
] = 0;
1348 if (*state
== HT_AGG_STATE_OPERATIONAL
) {
1349 printk(KERN_DEBUG
"Aggregation on for tid %d \n", tid
);
1350 ieee80211_wake_queue(hw
, sta
->tid_to_tx_q
[tid
]);
1353 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1354 printk(KERN_DEBUG
"recipient accepted agg: tid %d \n", tid
);
1356 printk(KERN_DEBUG
"recipient rejected agg: tid %d \n", tid
);
1358 sta
->ampdu_mlme
.addba_req_num
[tid
]++;
1359 /* this will allow the state check in stop_BA_session */
1360 *state
= HT_AGG_STATE_OPERATIONAL
;
1361 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1362 ieee80211_stop_tx_ba_session(hw
, sta
->addr
, tid
,
1363 WLAN_BACK_INITIATOR
);
1370 void ieee80211_send_delba(struct net_device
*dev
, const u8
*da
, u16 tid
,
1371 u16 initiator
, u16 reason_code
)
1373 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1374 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1375 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1376 struct sk_buff
*skb
;
1377 struct ieee80211_mgmt
*mgmt
;
1380 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1381 sizeof(mgmt
->u
.action
.u
.delba
));
1384 printk(KERN_ERR
"%s: failed to allocate buffer "
1385 "for delba frame\n", dev
->name
);
1389 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1390 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1391 memset(mgmt
, 0, 24);
1392 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1393 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1394 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1395 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1397 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1398 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1399 IEEE80211_STYPE_ACTION
);
1401 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.delba
));
1403 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1404 mgmt
->u
.action
.u
.delba
.action_code
= WLAN_ACTION_DELBA
;
1405 params
= (u16
)(initiator
<< 11); /* bit 11 initiator */
1406 params
|= (u16
)(tid
<< 12); /* bit 15:12 TID number */
1408 mgmt
->u
.action
.u
.delba
.params
= cpu_to_le16(params
);
1409 mgmt
->u
.action
.u
.delba
.reason_code
= cpu_to_le16(reason_code
);
1411 ieee80211_sta_tx(dev
, skb
, 0);
1414 void ieee80211_sta_stop_rx_ba_session(struct net_device
*dev
, u8
*ra
, u16 tid
,
1415 u16 initiator
, u16 reason
)
1417 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1418 struct ieee80211_hw
*hw
= &local
->hw
;
1419 struct sta_info
*sta
;
1424 sta
= sta_info_get(local
, ra
);
1430 /* check if TID is in operational state */
1431 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1432 if (sta
->ampdu_mlme
.tid_state_rx
[tid
]
1433 != HT_AGG_STATE_OPERATIONAL
) {
1434 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1438 sta
->ampdu_mlme
.tid_state_rx
[tid
] =
1439 HT_AGG_STATE_REQ_STOP_BA_MSK
|
1440 (initiator
<< HT_AGG_STATE_INITIATOR_SHIFT
);
1441 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1443 /* stop HW Rx aggregation. ampdu_action existence
1444 * already verified in session init so we add the BUG_ON */
1445 BUG_ON(!local
->ops
->ampdu_action
);
1447 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_STOP
,
1450 printk(KERN_DEBUG
"HW problem - can not stop rx "
1451 "aggergation for tid %d\n", tid
);
1453 /* shutdown timer has not expired */
1454 if (initiator
!= WLAN_BACK_TIMER
)
1455 del_timer_sync(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1457 /* check if this is a self generated aggregation halt */
1458 if (initiator
== WLAN_BACK_RECIPIENT
|| initiator
== WLAN_BACK_TIMER
)
1459 ieee80211_send_delba(dev
, ra
, tid
, 0, reason
);
1461 /* free the reordering buffer */
1462 for (i
= 0; i
< sta
->ampdu_mlme
.tid_rx
[tid
]->buf_size
; i
++) {
1463 if (sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]) {
1464 /* release the reordered frames */
1465 dev_kfree_skb(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]);
1466 sta
->ampdu_mlme
.tid_rx
[tid
]->stored_mpdu_num
--;
1467 sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
] = NULL
;
1470 /* free resources */
1471 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
);
1472 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1473 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1474 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_IDLE
;
1480 static void ieee80211_sta_process_delba(struct net_device
*dev
,
1481 struct ieee80211_mgmt
*mgmt
, size_t len
)
1483 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1484 struct sta_info
*sta
;
1487 DECLARE_MAC_BUF(mac
);
1491 sta
= sta_info_get(local
, mgmt
->sa
);
1497 params
= le16_to_cpu(mgmt
->u
.action
.u
.delba
.params
);
1498 tid
= (params
& IEEE80211_DELBA_PARAM_TID_MASK
) >> 12;
1499 initiator
= (params
& IEEE80211_DELBA_PARAM_INITIATOR_MASK
) >> 11;
1501 #ifdef CONFIG_MAC80211_HT_DEBUG
1502 if (net_ratelimit())
1503 printk(KERN_DEBUG
"delba from %s (%s) tid %d reason code %d\n",
1504 print_mac(mac
, mgmt
->sa
),
1505 initiator
? "initiator" : "recipient", tid
,
1506 mgmt
->u
.action
.u
.delba
.reason_code
);
1507 #endif /* CONFIG_MAC80211_HT_DEBUG */
1509 if (initiator
== WLAN_BACK_INITIATOR
)
1510 ieee80211_sta_stop_rx_ba_session(dev
, sta
->addr
, tid
,
1511 WLAN_BACK_INITIATOR
, 0);
1512 else { /* WLAN_BACK_RECIPIENT */
1513 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1514 sta
->ampdu_mlme
.tid_state_tx
[tid
] =
1515 HT_AGG_STATE_OPERATIONAL
;
1516 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1517 ieee80211_stop_tx_ba_session(&local
->hw
, sta
->addr
, tid
,
1518 WLAN_BACK_RECIPIENT
);
1524 * After sending add Block Ack request we activated a timer until
1525 * add Block Ack response will arrive from the recipient.
1526 * If this timer expires sta_addba_resp_timer_expired will be executed.
1528 void sta_addba_resp_timer_expired(unsigned long data
)
1530 /* not an elegant detour, but there is no choice as the timer passes
1531 * only one argument, and both sta_info and TID are needed, so init
1532 * flow in sta_info_create gives the TID as data, while the timer_to_id
1533 * array gives the sta through container_of */
1534 u16 tid
= *(int *)data
;
1535 struct sta_info
*temp_sta
= container_of((void *)data
,
1536 struct sta_info
, timer_to_tid
[tid
]);
1538 struct ieee80211_local
*local
= temp_sta
->local
;
1539 struct ieee80211_hw
*hw
= &local
->hw
;
1540 struct sta_info
*sta
;
1545 sta
= sta_info_get(local
, temp_sta
->addr
);
1551 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1552 /* check if the TID waits for addBA response */
1553 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1554 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1555 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1556 *state
= HT_AGG_STATE_IDLE
;
1557 printk(KERN_DEBUG
"timer expired on tid %d but we are not "
1558 "expecting addBA response there", tid
);
1559 goto timer_expired_exit
;
1562 printk(KERN_DEBUG
"addBA response timer expired on tid %d\n", tid
);
1564 /* go through the state check in stop_BA_session */
1565 *state
= HT_AGG_STATE_OPERATIONAL
;
1566 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1567 ieee80211_stop_tx_ba_session(hw
, temp_sta
->addr
, tid
,
1568 WLAN_BACK_INITIATOR
);
1575 * After accepting the AddBA Request we activated a timer,
1576 * resetting it after each frame that arrives from the originator.
1577 * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
1579 void sta_rx_agg_session_timer_expired(unsigned long data
)
1581 /* not an elegant detour, but there is no choice as the timer passes
1582 * only one argument, and verious sta_info are needed here, so init
1583 * flow in sta_info_create gives the TID as data, while the timer_to_id
1584 * array gives the sta through container_of */
1585 u8
*ptid
= (u8
*)data
;
1586 u8
*timer_to_id
= ptid
- *ptid
;
1587 struct sta_info
*sta
= container_of(timer_to_id
, struct sta_info
,
1590 printk(KERN_DEBUG
"rx session timer expired on tid %d\n", (u16
)*ptid
);
1591 ieee80211_sta_stop_rx_ba_session(sta
->sdata
->dev
, sta
->addr
,
1592 (u16
)*ptid
, WLAN_BACK_TIMER
,
1593 WLAN_REASON_QSTA_TIMEOUT
);
1596 void ieee80211_sta_tear_down_BA_sessions(struct net_device
*dev
, u8
*addr
)
1598 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1601 for (i
= 0; i
< STA_TID_NUM
; i
++) {
1602 ieee80211_stop_tx_ba_session(&local
->hw
, addr
, i
,
1603 WLAN_BACK_INITIATOR
);
1604 ieee80211_sta_stop_rx_ba_session(dev
, addr
, i
,
1605 WLAN_BACK_RECIPIENT
,
1606 WLAN_REASON_QSTA_LEAVE_QBSS
);
1610 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1611 struct ieee80211_if_sta
*ifsta
,
1612 struct ieee80211_mgmt
*mgmt
,
1615 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1616 u16 auth_alg
, auth_transaction
, status_code
;
1617 DECLARE_MAC_BUF(mac
);
1619 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1620 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
) {
1621 printk(KERN_DEBUG
"%s: authentication frame received from "
1622 "%s, but not in authenticate state - ignored\n",
1623 dev
->name
, print_mac(mac
, mgmt
->sa
));
1628 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
1629 "received from %s - ignored\n",
1630 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1634 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1635 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1636 printk(KERN_DEBUG
"%s: authentication frame received from "
1637 "unknown AP (SA=%s BSSID=%s) - "
1638 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1639 print_mac(mac
, mgmt
->bssid
));
1643 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1644 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
1645 printk(KERN_DEBUG
"%s: authentication frame received from "
1646 "unknown BSSID (SA=%s BSSID=%s) - "
1647 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1648 print_mac(mac
, mgmt
->bssid
));
1652 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1653 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1654 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1656 printk(KERN_DEBUG
"%s: RX authentication from %s (alg=%d "
1657 "transaction=%d status=%d)\n",
1658 dev
->name
, print_mac(mac
, mgmt
->sa
), auth_alg
,
1659 auth_transaction
, status_code
);
1661 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
1662 /* IEEE 802.11 standard does not require authentication in IBSS
1663 * networks and most implementations do not seem to use it.
1664 * However, try to reply to authentication attempts if someone
1665 * has actually implemented this.
1666 * TODO: Could implement shared key authentication. */
1667 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
1668 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
1669 "frame (alg=%d transaction=%d)\n",
1670 dev
->name
, auth_alg
, auth_transaction
);
1673 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1676 if (auth_alg
!= ifsta
->auth_alg
||
1677 auth_transaction
!= ifsta
->auth_transaction
) {
1678 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1679 "(alg=%d transaction=%d)\n",
1680 dev
->name
, auth_alg
, auth_transaction
);
1684 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1685 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1686 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1687 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1689 const int num_algs
= ARRAY_SIZE(algs
);
1691 algs
[0] = algs
[1] = algs
[2] = 0xff;
1692 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1693 algs
[0] = WLAN_AUTH_OPEN
;
1694 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1695 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1696 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1697 algs
[2] = WLAN_AUTH_LEAP
;
1698 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1700 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1704 for (i
= 0; i
< num_algs
; i
++) {
1706 if (pos
>= num_algs
)
1708 if (algs
[pos
] == ifsta
->auth_alg
||
1711 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1712 !ieee80211_sta_wep_configured(dev
))
1714 ifsta
->auth_alg
= algs
[pos
];
1715 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1717 dev
->name
, ifsta
->auth_alg
);
1724 switch (ifsta
->auth_alg
) {
1725 case WLAN_AUTH_OPEN
:
1726 case WLAN_AUTH_LEAP
:
1727 ieee80211_auth_completed(dev
, ifsta
);
1729 case WLAN_AUTH_SHARED_KEY
:
1730 if (ifsta
->auth_transaction
== 4)
1731 ieee80211_auth_completed(dev
, ifsta
);
1733 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1739 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1740 struct ieee80211_if_sta
*ifsta
,
1741 struct ieee80211_mgmt
*mgmt
,
1745 DECLARE_MAC_BUF(mac
);
1748 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1749 "received from %s - ignored\n",
1750 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1754 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1755 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1756 "unknown AP (SA=%s BSSID=%s) - "
1757 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1758 print_mac(mac
, mgmt
->bssid
));
1762 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1764 printk(KERN_DEBUG
"%s: RX deauthentication from %s"
1766 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1768 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1769 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1772 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1773 ifsta
->state
== IEEE80211_ASSOCIATE
||
1774 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1775 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1776 mod_timer(&ifsta
->timer
, jiffies
+
1777 IEEE80211_RETRY_AUTH_INTERVAL
);
1780 ieee80211_set_disassoc(dev
, ifsta
, 1);
1781 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1785 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1786 struct ieee80211_if_sta
*ifsta
,
1787 struct ieee80211_mgmt
*mgmt
,
1791 DECLARE_MAC_BUF(mac
);
1794 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1795 "received from %s - ignored\n",
1796 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1800 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1801 printk(KERN_DEBUG
"%s: disassociation frame received from "
1802 "unknown AP (SA=%s BSSID=%s) - "
1803 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1804 print_mac(mac
, mgmt
->bssid
));
1808 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1810 printk(KERN_DEBUG
"%s: RX disassociation from %s"
1812 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1814 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1815 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1817 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1818 ifsta
->state
= IEEE80211_ASSOCIATE
;
1819 mod_timer(&ifsta
->timer
, jiffies
+
1820 IEEE80211_RETRY_AUTH_INTERVAL
);
1823 ieee80211_set_disassoc(dev
, ifsta
, 0);
1827 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
1828 struct ieee80211_if_sta
*ifsta
,
1829 struct ieee80211_mgmt
*mgmt
,
1833 struct ieee80211_local
*local
= sdata
->local
;
1834 struct net_device
*dev
= sdata
->dev
;
1835 struct ieee80211_supported_band
*sband
;
1836 struct sta_info
*sta
;
1837 u64 rates
, basic_rates
;
1838 u16 capab_info
, status_code
, aid
;
1839 struct ieee802_11_elems elems
;
1840 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
1843 DECLARE_MAC_BUF(mac
);
1844 bool have_higher_than_11mbit
= false;
1846 /* AssocResp and ReassocResp have identical structure, so process both
1847 * of them in this function. */
1849 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1850 printk(KERN_DEBUG
"%s: association frame received from "
1851 "%s, but not in associate state - ignored\n",
1852 dev
->name
, print_mac(mac
, mgmt
->sa
));
1857 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1858 "received from %s - ignored\n",
1859 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1863 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1864 printk(KERN_DEBUG
"%s: association frame received from "
1865 "unknown AP (SA=%s BSSID=%s) - "
1866 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1867 print_mac(mac
, mgmt
->bssid
));
1871 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1872 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1873 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1875 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
1876 "status=%d aid=%d)\n",
1877 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
1878 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
1880 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1881 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1882 dev
->name
, status_code
);
1883 /* if this was a reassociation, ensure we try a "full"
1884 * association next time. This works around some broken APs
1885 * which do not correctly reject reassociation requests. */
1886 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1890 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1891 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1892 "set\n", dev
->name
, aid
);
1893 aid
&= ~(BIT(15) | BIT(14));
1895 pos
= mgmt
->u
.assoc_resp
.variable
;
1896 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1898 if (!elems
.supp_rates
) {
1899 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1904 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1906 ifsta
->ap_capab
= capab_info
;
1908 kfree(ifsta
->assocresp_ies
);
1909 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1910 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1911 if (ifsta
->assocresp_ies
)
1912 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1916 /* Add STA entry for the AP */
1917 sta
= sta_info_get(local
, ifsta
->bssid
);
1919 struct ieee80211_sta_bss
*bss
;
1922 sta
= sta_info_alloc(sdata
, ifsta
->bssid
, GFP_ATOMIC
);
1924 printk(KERN_DEBUG
"%s: failed to alloc STA entry for"
1925 " the AP\n", dev
->name
);
1929 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
1930 local
->hw
.conf
.channel
->center_freq
,
1931 ifsta
->ssid
, ifsta
->ssid_len
);
1933 sta
->last_rssi
= bss
->rssi
;
1934 sta
->last_signal
= bss
->signal
;
1935 sta
->last_noise
= bss
->noise
;
1936 ieee80211_rx_bss_put(dev
, bss
);
1939 err
= sta_info_insert(sta
);
1941 printk(KERN_DEBUG
"%s: failed to insert STA entry for"
1942 " the AP (error %d)\n", dev
->name
, err
);
1949 * FIXME: Do we really need to update the sta_info's information here?
1950 * We already know about the AP (we found it in our list) so it
1951 * should already be filled with the right info, no?
1952 * As is stands, all this is racy because typically we assume
1953 * the information that is filled in here (except flags) doesn't
1954 * change while a STA structure is alive. As such, it should move
1955 * to between the sta_info_alloc() and sta_info_insert() above.
1958 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
|
1959 WLAN_STA_AUTHORIZED
;
1963 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
1965 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1966 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1969 have_higher_than_11mbit
= true;
1971 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
1972 if (sband
->bitrates
[j
].bitrate
== rate
)
1974 if (elems
.supp_rates
[i
] & 0x80)
1975 basic_rates
|= BIT(j
);
1979 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1980 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1983 have_higher_than_11mbit
= true;
1985 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
1986 if (sband
->bitrates
[j
].bitrate
== rate
)
1988 if (elems
.ext_supp_rates
[i
] & 0x80)
1989 basic_rates
|= BIT(j
);
1993 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] = rates
;
1994 sdata
->basic_rates
= basic_rates
;
1996 /* cf. IEEE 802.11 9.2.12 */
1997 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
1998 have_higher_than_11mbit
)
1999 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
2001 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
2003 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&& elems
.wmm_param
&&
2004 local
->ops
->conf_ht
) {
2005 struct ieee80211_ht_bss_info bss_info
;
2007 ieee80211_ht_cap_ie_to_ht_info(
2008 (struct ieee80211_ht_cap
*)
2009 elems
.ht_cap_elem
, &sta
->ht_info
);
2010 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2011 (struct ieee80211_ht_addt_info
*)
2012 elems
.ht_info_elem
, &bss_info
);
2013 ieee80211_hw_config_ht(local
, 1, &sta
->ht_info
, &bss_info
);
2016 rate_control_rate_init(sta
, local
);
2018 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2019 sta
->flags
|= WLAN_STA_WME
;
2021 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2022 elems
.wmm_param_len
);
2026 /* set AID, ieee80211_set_associated() will tell the driver */
2027 bss_conf
->aid
= aid
;
2028 ieee80211_set_associated(dev
, ifsta
, 1);
2030 ieee80211_associated(dev
, ifsta
);
2034 /* Caller must hold local->sta_bss_lock */
2035 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
2036 struct ieee80211_sta_bss
*bss
)
2038 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2041 if (bss_mesh_cfg(bss
))
2042 hash_idx
= mesh_id_hash(bss_mesh_id(bss
),
2043 bss_mesh_id_len(bss
));
2045 hash_idx
= STA_HASH(bss
->bssid
);
2047 bss
->hnext
= local
->sta_bss_hash
[hash_idx
];
2048 local
->sta_bss_hash
[hash_idx
] = bss
;
2052 /* Caller must hold local->sta_bss_lock */
2053 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
2054 struct ieee80211_sta_bss
*bss
)
2056 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2057 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
2058 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
2062 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
2065 prev
->hnext
= bss
->hnext
;
2074 static struct ieee80211_sta_bss
*
2075 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int freq
,
2076 u8
*ssid
, u8 ssid_len
)
2078 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2079 struct ieee80211_sta_bss
*bss
;
2081 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2084 atomic_inc(&bss
->users
);
2085 atomic_inc(&bss
->users
);
2086 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
2088 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
2089 memcpy(bss
->ssid
, ssid
, ssid_len
);
2090 bss
->ssid_len
= ssid_len
;
2093 spin_lock_bh(&local
->sta_bss_lock
);
2094 /* TODO: order by RSSI? */
2095 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2096 __ieee80211_rx_bss_hash_add(dev
, bss
);
2097 spin_unlock_bh(&local
->sta_bss_lock
);
2101 static struct ieee80211_sta_bss
*
2102 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
2103 u8
*ssid
, u8 ssid_len
)
2105 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2106 struct ieee80211_sta_bss
*bss
;
2108 spin_lock_bh(&local
->sta_bss_lock
);
2109 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
2111 if (!bss_mesh_cfg(bss
) &&
2112 !memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
2113 bss
->freq
== freq
&&
2114 bss
->ssid_len
== ssid_len
&&
2115 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
2116 atomic_inc(&bss
->users
);
2121 spin_unlock_bh(&local
->sta_bss_lock
);
2125 #ifdef CONFIG_MAC80211_MESH
2126 static inline u32
bss_mesh_cfg_get(u8
*mesh_cfg
, u8 offset
)
2128 return be32_to_cpu(get_unaligned((__be32
*) (mesh_cfg
+ offset
)));
2131 static struct ieee80211_sta_bss
*
2132 ieee80211_rx_mesh_bss_get(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2133 u8
*mesh_cfg
, int freq
)
2135 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2136 struct ieee80211_sta_bss
*bss
;
2138 spin_lock_bh(&local
->sta_bss_lock
);
2139 bss
= local
->sta_bss_hash
[mesh_id_hash(mesh_id
, mesh_id_len
)];
2141 if (bss_mesh_cfg(bss
) &&
2142 !memcmp(bss_mesh_cfg(bss
), mesh_cfg
, MESH_CFG_CMP_LEN
) &&
2143 bss
->freq
== freq
&&
2144 mesh_id_len
== bss
->mesh_id_len
&&
2145 (mesh_id_len
== 0 || !memcmp(bss
->mesh_id
, mesh_id
,
2147 atomic_inc(&bss
->users
);
2152 spin_unlock_bh(&local
->sta_bss_lock
);
2156 static struct ieee80211_sta_bss
*
2157 ieee80211_rx_mesh_bss_add(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2158 u8
*mesh_cfg
, int mesh_config_len
, int freq
)
2160 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2161 struct ieee80211_sta_bss
*bss
;
2163 if (mesh_config_len
!= MESH_CFG_LEN
)
2166 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2170 bss
->mesh_cfg
= kmalloc(sizeof(struct bss_mesh_config
), GFP_ATOMIC
);
2171 if (!bss
->mesh_cfg
) {
2176 if (mesh_id_len
&& mesh_id_len
<= IEEE80211_MAX_MESH_ID_LEN
) {
2177 bss
->mesh_id
= kmalloc(mesh_id_len
, GFP_ATOMIC
);
2178 if (!bss
->mesh_id
) {
2179 kfree(bss
->mesh_cfg
);
2183 memcpy(bss
->mesh_id
, mesh_id
, mesh_id_len
);
2186 atomic_inc(&bss
->users
);
2187 atomic_inc(&bss
->users
);
2188 bss
->mesh_cfg
->mesh_version
= mesh_cfg
[0];
2189 bss
->mesh_cfg
->path_proto_id
= bss_mesh_cfg_get(mesh_cfg
, PP_OFFSET
);
2190 bss
->mesh_cfg
->path_metric_id
= bss_mesh_cfg_get(mesh_cfg
, PM_OFFSET
);
2191 bss
->mesh_cfg
->cong_control_id
= bss_mesh_cfg_get(mesh_cfg
, CC_OFFSET
);
2192 bss
->mesh_cfg
->channel_precedence
= bss_mesh_cfg_get(mesh_cfg
,
2194 bss
->mesh_id_len
= mesh_id_len
;
2196 spin_lock_bh(&local
->sta_bss_lock
);
2197 /* TODO: order by RSSI? */
2198 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2199 __ieee80211_rx_bss_hash_add(dev
, bss
);
2200 spin_unlock_bh(&local
->sta_bss_lock
);
2205 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
2211 kfree(bss_mesh_id(bss
));
2212 kfree(bss_mesh_cfg(bss
));
2217 static void ieee80211_rx_bss_put(struct net_device
*dev
,
2218 struct ieee80211_sta_bss
*bss
)
2220 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2221 if (!atomic_dec_and_test(&bss
->users
))
2224 spin_lock_bh(&local
->sta_bss_lock
);
2225 __ieee80211_rx_bss_hash_del(dev
, bss
);
2226 list_del(&bss
->list
);
2227 spin_unlock_bh(&local
->sta_bss_lock
);
2228 ieee80211_rx_bss_free(bss
);
2232 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
2234 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2235 spin_lock_init(&local
->sta_bss_lock
);
2236 INIT_LIST_HEAD(&local
->sta_bss_list
);
2240 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
2242 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2243 struct ieee80211_sta_bss
*bss
, *tmp
;
2245 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
2246 ieee80211_rx_bss_put(dev
, bss
);
2250 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2251 struct ieee80211_if_sta
*ifsta
,
2252 struct ieee80211_sta_bss
*bss
)
2254 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2255 int res
, rates
, i
, j
;
2256 struct sk_buff
*skb
;
2257 struct ieee80211_mgmt
*mgmt
;
2258 struct ieee80211_tx_control control
;
2259 struct rate_selection ratesel
;
2261 struct ieee80211_sub_if_data
*sdata
;
2262 struct ieee80211_supported_band
*sband
;
2264 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2266 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2268 /* Remove possible STA entries from other IBSS networks. */
2269 sta_info_flush_delayed(sdata
);
2271 if (local
->ops
->reset_tsf
) {
2272 /* Reset own TSF to allow time synchronization work. */
2273 local
->ops
->reset_tsf(local_to_hw(local
));
2275 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2276 res
= ieee80211_if_config(dev
);
2280 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2282 sdata
->drop_unencrypted
= bss
->capability
&
2283 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2285 res
= ieee80211_set_freq(local
, bss
->freq
);
2287 if (local
->oper_channel
->flags
& IEEE80211_CHAN_NO_IBSS
) {
2288 printk(KERN_DEBUG
"%s: IBSS not allowed on frequency "
2289 "%d MHz\n", dev
->name
, local
->oper_channel
->center_freq
);
2293 /* Set beacon template */
2294 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2299 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2301 mgmt
= (struct ieee80211_mgmt
*)
2302 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2303 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2304 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2305 IEEE80211_STYPE_BEACON
);
2306 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2307 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2308 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2309 mgmt
->u
.beacon
.beacon_int
=
2310 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2311 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2313 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2314 *pos
++ = WLAN_EID_SSID
;
2315 *pos
++ = ifsta
->ssid_len
;
2316 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2318 rates
= bss
->supp_rates_len
;
2321 pos
= skb_put(skb
, 2 + rates
);
2322 *pos
++ = WLAN_EID_SUPP_RATES
;
2324 memcpy(pos
, bss
->supp_rates
, rates
);
2326 if (bss
->band
== IEEE80211_BAND_2GHZ
) {
2327 pos
= skb_put(skb
, 2 + 1);
2328 *pos
++ = WLAN_EID_DS_PARAMS
;
2330 *pos
++ = ieee80211_frequency_to_channel(bss
->freq
);
2333 pos
= skb_put(skb
, 2 + 2);
2334 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2336 /* FIX: set ATIM window based on scan results */
2340 if (bss
->supp_rates_len
> 8) {
2341 rates
= bss
->supp_rates_len
- 8;
2342 pos
= skb_put(skb
, 2 + rates
);
2343 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2345 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2348 memset(&control
, 0, sizeof(control
));
2349 rate_control_get_rate(dev
, sband
, skb
, &ratesel
);
2350 if (!ratesel
.rate
) {
2351 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2352 "for IBSS beacon\n", dev
->name
);
2355 control
.vif
= &sdata
->vif
;
2356 control
.tx_rate
= ratesel
.rate
;
2357 if (sdata
->bss_conf
.use_short_preamble
&&
2358 ratesel
.rate
->flags
& IEEE80211_RATE_SHORT_PREAMBLE
)
2359 control
.flags
|= IEEE80211_TXCTL_SHORT_PREAMBLE
;
2360 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
2361 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
2362 control
.retry_limit
= 1;
2364 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
2365 if (ifsta
->probe_resp
) {
2366 mgmt
= (struct ieee80211_mgmt
*)
2367 ifsta
->probe_resp
->data
;
2368 mgmt
->frame_control
=
2369 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2370 IEEE80211_STYPE_PROBE_RESP
);
2372 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
2373 "template for IBSS\n", dev
->name
);
2376 if (local
->ops
->beacon_update
&&
2377 local
->ops
->beacon_update(local_to_hw(local
),
2378 skb
, &control
) == 0) {
2379 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
2380 "template\n", dev
->name
);
2385 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2386 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2387 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2388 for (j
= 0; j
< sband
->n_bitrates
; j
++)
2389 if (sband
->bitrates
[j
].bitrate
== bitrate
)
2392 ifsta
->supp_rates_bits
[local
->hw
.conf
.channel
->band
] = rates
;
2394 ieee80211_sta_def_wmm_params(dev
, bss
, 1);
2398 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
2399 "template\n", dev
->name
);
2403 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2404 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2406 ieee80211_rx_bss_put(dev
, bss
);
2411 u64
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
2412 struct ieee802_11_elems
*elems
,
2413 enum ieee80211_band band
)
2415 struct ieee80211_supported_band
*sband
;
2416 struct ieee80211_rate
*bitrates
;
2420 sband
= local
->hw
.wiphy
->bands
[band
];
2424 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2427 bitrates
= sband
->bitrates
;
2428 num_rates
= sband
->n_bitrates
;
2430 for (i
= 0; i
< elems
->supp_rates_len
+
2431 elems
->ext_supp_rates_len
; i
++) {
2434 if (i
< elems
->supp_rates_len
)
2435 rate
= elems
->supp_rates
[i
];
2436 else if (elems
->ext_supp_rates
)
2437 rate
= elems
->ext_supp_rates
2438 [i
- elems
->supp_rates_len
];
2439 own_rate
= 5 * (rate
& 0x7f);
2440 for (j
= 0; j
< num_rates
; j
++)
2441 if (bitrates
[j
].bitrate
== own_rate
)
2442 supp_rates
|= BIT(j
);
2448 static void ieee80211_rx_bss_info(struct net_device
*dev
,
2449 struct ieee80211_mgmt
*mgmt
,
2451 struct ieee80211_rx_status
*rx_status
,
2454 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2455 struct ieee802_11_elems elems
;
2458 struct ieee80211_sta_bss
*bss
;
2459 struct sta_info
*sta
;
2460 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2461 u64 beacon_timestamp
, rx_timestamp
;
2462 struct ieee80211_channel
*channel
;
2463 DECLARE_MAC_BUF(mac
);
2464 DECLARE_MAC_BUF(mac2
);
2466 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
2467 return; /* ignore ProbeResp to foreign address */
2470 printk(KERN_DEBUG
"%s: RX %s from %s to %s\n",
2471 dev
->name
, beacon
? "Beacon" : "Probe Response",
2472 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
));
2475 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2479 beacon_timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
2480 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2482 if (ieee80211_vif_is_mesh(&sdata
->vif
) && elems
.mesh_id
&&
2483 elems
.mesh_config
&& mesh_matches_local(&elems
, dev
)) {
2484 u64 rates
= ieee80211_sta_get_rates(local
, &elems
,
2487 mesh_neighbour_update(mgmt
->sa
, rates
, dev
,
2488 mesh_peer_accepts_plinks(&elems
, dev
));
2493 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
2494 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
2495 (sta
= sta_info_get(local
, mgmt
->sa
))) {
2497 u64 supp_rates
= ieee80211_sta_get_rates(local
, &elems
,
2500 prev_rates
= sta
->supp_rates
[rx_status
->band
];
2501 sta
->supp_rates
[rx_status
->band
] &= supp_rates
;
2502 if (sta
->supp_rates
[rx_status
->band
] == 0) {
2503 /* No matching rates - this should not really happen.
2504 * Make sure that at least one rate is marked
2505 * supported to avoid issues with TX rate ctrl. */
2506 sta
->supp_rates
[rx_status
->band
] =
2507 sdata
->u
.sta
.supp_rates_bits
[rx_status
->band
];
2509 if (sta
->supp_rates
[rx_status
->band
] != prev_rates
) {
2510 printk(KERN_DEBUG
"%s: updated supp_rates set for "
2511 "%s based on beacon info (0x%llx & 0x%llx -> "
2513 dev
->name
, print_mac(mac
, sta
->addr
),
2514 (unsigned long long) prev_rates
,
2515 (unsigned long long) supp_rates
,
2516 (unsigned long long) sta
->supp_rates
[rx_status
->band
]);
2522 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
2523 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0]);
2525 freq
= rx_status
->freq
;
2527 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
2529 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
2532 #ifdef CONFIG_MAC80211_MESH
2533 if (elems
.mesh_config
)
2534 bss
= ieee80211_rx_mesh_bss_get(dev
, elems
.mesh_id
,
2535 elems
.mesh_id_len
, elems
.mesh_config
, freq
);
2538 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, freq
,
2539 elems
.ssid
, elems
.ssid_len
);
2541 #ifdef CONFIG_MAC80211_MESH
2542 if (elems
.mesh_config
)
2543 bss
= ieee80211_rx_mesh_bss_add(dev
, elems
.mesh_id
,
2544 elems
.mesh_id_len
, elems
.mesh_config
,
2545 elems
.mesh_config_len
, freq
);
2548 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, freq
,
2549 elems
.ssid
, elems
.ssid_len
);
2554 /* TODO: order by RSSI? */
2555 spin_lock_bh(&local
->sta_bss_lock
);
2556 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
2557 spin_unlock_bh(&local
->sta_bss_lock
);
2561 bss
->band
= rx_status
->band
;
2563 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
2564 bss
->probe_resp
&& beacon
) {
2566 * Do not allow beacon to override data from Probe Response. */
2567 ieee80211_rx_bss_put(dev
, bss
);
2571 /* save the ERP value so that it is available at association time */
2572 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
2573 bss
->erp_value
= elems
.erp_info
[0];
2574 bss
->has_erp_value
= 1;
2577 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
2578 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2580 bss
->supp_rates_len
= 0;
2581 if (elems
.supp_rates
) {
2582 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2583 if (clen
> elems
.supp_rates_len
)
2584 clen
= elems
.supp_rates_len
;
2585 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
2587 bss
->supp_rates_len
+= clen
;
2589 if (elems
.ext_supp_rates
) {
2590 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2591 if (clen
> elems
.ext_supp_rates_len
)
2592 clen
= elems
.ext_supp_rates_len
;
2593 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
2594 elems
.ext_supp_rates
, clen
);
2595 bss
->supp_rates_len
+= clen
;
2599 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
2600 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
2602 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
2604 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
2605 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
2607 bss
->wpa_ie_len
= 0;
2608 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
2611 bss
->wpa_ie_len
= 0;
2615 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
2616 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
2618 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
2620 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
2621 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
2623 bss
->rsn_ie_len
= 0;
2624 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
2627 bss
->rsn_ie_len
= 0;
2630 if (elems
.wmm_param
&&
2631 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
2632 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
2634 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
2636 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
2637 elems
.wmm_param_len
+ 2);
2638 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
2640 bss
->wmm_ie_len
= 0;
2641 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
2644 bss
->wmm_ie_len
= 0;
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
->timestamp
= beacon_timestamp
;
2664 bss
->last_update
= jiffies
;
2665 bss
->rssi
= rx_status
->ssi
;
2666 bss
->signal
= rx_status
->signal
;
2667 bss
->noise
= rx_status
->noise
;
2671 /* check if we need to merge IBSS */
2672 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
2673 !local
->sta_sw_scanning
&& !local
->sta_hw_scanning
&&
2674 bss
->capability
& WLAN_CAPABILITY_IBSS
&&
2675 bss
->freq
== local
->oper_channel
->center_freq
&&
2676 elems
.ssid_len
== sdata
->u
.sta
.ssid_len
&&
2677 memcmp(elems
.ssid
, sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
) == 0) {
2678 if (rx_status
->flag
& RX_FLAG_TSFT
) {
2679 /* in order for correct IBSS merging we need mactime
2681 * since mactime is defined as the time the first data
2682 * symbol of the frame hits the PHY, and the timestamp
2683 * of the beacon is defined as "the time that the data
2684 * symbol containing the first bit of the timestamp is
2685 * transmitted to the PHY plus the transmitting STA’s
2686 * delays through its local PHY from the MAC-PHY
2687 * interface to its interface with the WM"
2688 * (802.11 11.1.2) - equals the time this bit arrives at
2689 * the receiver - we have to take into account the
2690 * offset between the two.
2691 * e.g: at 1 MBit that means mactime is 192 usec earlier
2692 * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
2694 int rate
= local
->hw
.wiphy
->bands
[rx_status
->band
]->
2695 bitrates
[rx_status
->rate_idx
].bitrate
;
2696 rx_timestamp
= rx_status
->mactime
+ (24 * 8 * 10 / rate
);
2697 } else if (local
&& local
->ops
&& local
->ops
->get_tsf
)
2698 /* second best option: get current TSF */
2699 rx_timestamp
= local
->ops
->get_tsf(local_to_hw(local
));
2701 /* can't merge without knowing the TSF */
2702 rx_timestamp
= -1LLU;
2703 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2704 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
2705 "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
2706 print_mac(mac
, mgmt
->sa
),
2707 print_mac(mac2
, mgmt
->bssid
),
2708 (unsigned long long)rx_timestamp
,
2709 (unsigned long long)beacon_timestamp
,
2710 (unsigned long long)(rx_timestamp
- beacon_timestamp
),
2712 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2713 if (beacon_timestamp
> rx_timestamp
) {
2714 #ifndef CONFIG_MAC80211_IBSS_DEBUG
2715 if (net_ratelimit())
2717 printk(KERN_DEBUG
"%s: beacon TSF higher than "
2718 "local TSF - IBSS merge with BSSID %s\n",
2719 dev
->name
, print_mac(mac
, mgmt
->bssid
));
2720 ieee80211_sta_join_ibss(dev
, &sdata
->u
.sta
, bss
);
2721 ieee80211_ibss_add_sta(dev
, NULL
,
2722 mgmt
->bssid
, mgmt
->sa
);
2726 ieee80211_rx_bss_put(dev
, bss
);
2730 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
2731 struct ieee80211_mgmt
*mgmt
,
2733 struct ieee80211_rx_status
*rx_status
)
2735 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
2739 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
2740 struct ieee80211_mgmt
*mgmt
,
2742 struct ieee80211_rx_status
*rx_status
)
2744 struct ieee80211_sub_if_data
*sdata
;
2745 struct ieee80211_if_sta
*ifsta
;
2747 struct ieee802_11_elems elems
;
2748 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2749 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
2752 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
2754 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2755 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2757 ifsta
= &sdata
->u
.sta
;
2759 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
2760 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
2763 /* Process beacon from the current BSS */
2764 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2768 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2770 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
2771 changed
|= ieee80211_handle_erp_ie(sdata
, elems
.erp_info
[0]);
2773 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&&
2774 elems
.wmm_param
&& local
->ops
->conf_ht
&&
2775 conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
2776 struct ieee80211_ht_bss_info bss_info
;
2778 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2779 (struct ieee80211_ht_addt_info
*)
2780 elems
.ht_info_elem
, &bss_info
);
2781 /* check if AP changed bss inforamation */
2782 if ((conf
->ht_bss_conf
.primary_channel
!=
2783 bss_info
.primary_channel
) ||
2784 (conf
->ht_bss_conf
.bss_cap
!= bss_info
.bss_cap
) ||
2785 (conf
->ht_bss_conf
.bss_op_mode
!= bss_info
.bss_op_mode
))
2786 ieee80211_hw_config_ht(local
, 1, &conf
->ht_conf
,
2790 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2791 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2792 elems
.wmm_param_len
);
2795 ieee80211_bss_info_change_notify(sdata
, changed
);
2799 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
2800 struct ieee80211_if_sta
*ifsta
,
2801 struct ieee80211_mgmt
*mgmt
,
2803 struct ieee80211_rx_status
*rx_status
)
2805 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2806 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2808 struct sk_buff
*skb
;
2809 struct ieee80211_mgmt
*resp
;
2811 DECLARE_MAC_BUF(mac
);
2812 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2813 DECLARE_MAC_BUF(mac2
);
2814 DECLARE_MAC_BUF(mac3
);
2817 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
||
2818 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
2819 len
< 24 + 2 || !ifsta
->probe_resp
)
2822 if (local
->ops
->tx_last_beacon
)
2823 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
2827 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2828 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
2829 "%s (tx_last_beacon=%d)\n",
2830 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
2831 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
2832 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2834 if (!tx_last_beacon
)
2837 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
2838 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
2841 end
= ((u8
*) mgmt
) + len
;
2842 pos
= mgmt
->u
.probe_req
.variable
;
2843 if (pos
[0] != WLAN_EID_SSID
||
2844 pos
+ 2 + pos
[1] > end
) {
2845 if (net_ratelimit()) {
2846 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
2848 dev
->name
, print_mac(mac
, mgmt
->sa
));
2853 (pos
[1] != ifsta
->ssid_len
||
2854 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
2855 /* Ignore ProbeReq for foreign SSID */
2859 /* Reply with ProbeResp */
2860 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
2864 resp
= (struct ieee80211_mgmt
*) skb
->data
;
2865 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
2866 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2867 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
2868 dev
->name
, print_mac(mac
, resp
->da
));
2869 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2870 ieee80211_sta_tx(dev
, skb
, 0);
2873 static void ieee80211_rx_mgmt_action(struct net_device
*dev
,
2874 struct ieee80211_if_sta
*ifsta
,
2875 struct ieee80211_mgmt
*mgmt
,
2877 struct ieee80211_rx_status
*rx_status
)
2879 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2881 if (len
< IEEE80211_MIN_ACTION_SIZE
)
2884 switch (mgmt
->u
.action
.category
) {
2885 case WLAN_CATEGORY_BACK
:
2886 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
2887 case WLAN_ACTION_ADDBA_REQ
:
2888 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2889 sizeof(mgmt
->u
.action
.u
.addba_req
)))
2891 ieee80211_sta_process_addba_request(dev
, mgmt
, len
);
2893 case WLAN_ACTION_ADDBA_RESP
:
2894 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2895 sizeof(mgmt
->u
.action
.u
.addba_resp
)))
2897 ieee80211_sta_process_addba_resp(dev
, mgmt
, len
);
2899 case WLAN_ACTION_DELBA
:
2900 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2901 sizeof(mgmt
->u
.action
.u
.delba
)))
2903 ieee80211_sta_process_delba(dev
, mgmt
, len
);
2906 if (net_ratelimit())
2907 printk(KERN_DEBUG
"%s: Rx unknown A-MPDU action\n",
2912 case PLINK_CATEGORY
:
2913 if (ieee80211_vif_is_mesh(&sdata
->vif
))
2914 mesh_rx_plink_frame(dev
, mgmt
, len
, rx_status
);
2916 case MESH_PATH_SEL_CATEGORY
:
2917 if (ieee80211_vif_is_mesh(&sdata
->vif
))
2918 mesh_rx_path_sel_frame(dev
, mgmt
, len
);
2921 if (net_ratelimit())
2922 printk(KERN_DEBUG
"%s: Rx unknown action frame - "
2923 "category=%d\n", dev
->name
, mgmt
->u
.action
.category
);
2928 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
2929 struct ieee80211_rx_status
*rx_status
)
2931 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2932 struct ieee80211_sub_if_data
*sdata
;
2933 struct ieee80211_if_sta
*ifsta
;
2934 struct ieee80211_mgmt
*mgmt
;
2940 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2941 ifsta
= &sdata
->u
.sta
;
2943 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2944 fc
= le16_to_cpu(mgmt
->frame_control
);
2946 switch (fc
& IEEE80211_FCTL_STYPE
) {
2947 case IEEE80211_STYPE_PROBE_REQ
:
2948 case IEEE80211_STYPE_PROBE_RESP
:
2949 case IEEE80211_STYPE_BEACON
:
2950 case IEEE80211_STYPE_ACTION
:
2951 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
2952 case IEEE80211_STYPE_AUTH
:
2953 case IEEE80211_STYPE_ASSOC_RESP
:
2954 case IEEE80211_STYPE_REASSOC_RESP
:
2955 case IEEE80211_STYPE_DEAUTH
:
2956 case IEEE80211_STYPE_DISASSOC
:
2957 skb_queue_tail(&ifsta
->skb_queue
, skb
);
2958 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2961 printk(KERN_DEBUG
"%s: received unknown management frame - "
2962 "stype=%d\n", dev
->name
,
2963 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
2972 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
2973 struct sk_buff
*skb
)
2975 struct ieee80211_rx_status
*rx_status
;
2976 struct ieee80211_sub_if_data
*sdata
;
2977 struct ieee80211_if_sta
*ifsta
;
2978 struct ieee80211_mgmt
*mgmt
;
2981 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2982 ifsta
= &sdata
->u
.sta
;
2984 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
2985 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2986 fc
= le16_to_cpu(mgmt
->frame_control
);
2988 switch (fc
& IEEE80211_FCTL_STYPE
) {
2989 case IEEE80211_STYPE_PROBE_REQ
:
2990 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
2993 case IEEE80211_STYPE_PROBE_RESP
:
2994 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
2996 case IEEE80211_STYPE_BEACON
:
2997 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
2999 case IEEE80211_STYPE_AUTH
:
3000 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
3002 case IEEE80211_STYPE_ASSOC_RESP
:
3003 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 0);
3005 case IEEE80211_STYPE_REASSOC_RESP
:
3006 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 1);
3008 case IEEE80211_STYPE_DEAUTH
:
3009 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
3011 case IEEE80211_STYPE_DISASSOC
:
3012 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
3014 case IEEE80211_STYPE_ACTION
:
3015 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
, rx_status
);
3024 ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
3025 struct ieee80211_rx_status
*rx_status
)
3027 struct ieee80211_mgmt
*mgmt
;
3031 return RX_DROP_UNUSABLE
;
3033 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3034 fc
= le16_to_cpu(mgmt
->frame_control
);
3036 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_CTL
)
3040 return RX_DROP_MONITOR
;
3042 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
3043 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
3044 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
3045 skb
->len
, rx_status
);
3048 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
3049 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
3059 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
3061 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3063 struct sta_info
*sta
;
3064 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3068 list_for_each_entry_rcu(sta
, &local
->sta_list
, list
) {
3069 if (sta
->sdata
== sdata
&&
3070 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
3083 static void ieee80211_sta_expire(struct net_device
*dev
, unsigned long exp_time
)
3085 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3086 struct sta_info
*sta
, *tmp
;
3087 LIST_HEAD(tmp_list
);
3088 DECLARE_MAC_BUF(mac
);
3089 unsigned long flags
;
3091 spin_lock_irqsave(&local
->sta_lock
, flags
);
3092 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
3093 if (time_after(jiffies
, sta
->last_rx
+ exp_time
)) {
3094 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
3095 dev
->name
, print_mac(mac
, sta
->addr
));
3096 __sta_info_unlink(&sta
);
3098 list_add(&sta
->list
, &tmp_list
);
3100 spin_unlock_irqrestore(&local
->sta_lock
, flags
);
3105 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
)
3106 sta_info_destroy(sta
);
3111 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
3112 struct ieee80211_if_sta
*ifsta
)
3114 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
3116 ieee80211_sta_expire(dev
, IEEE80211_IBSS_INACTIVITY_LIMIT
);
3117 if (ieee80211_sta_active_ibss(dev
))
3120 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
3121 "IBSS networks with same SSID (merge)\n", dev
->name
);
3122 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
3126 #ifdef CONFIG_MAC80211_MESH
3127 static void ieee80211_mesh_housekeeping(struct net_device
*dev
,
3128 struct ieee80211_if_sta
*ifsta
)
3130 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3133 ieee80211_sta_expire(dev
, IEEE80211_MESH_PEER_INACTIVITY_LIMIT
);
3134 mesh_path_expire(dev
);
3136 free_plinks
= mesh_plink_availables(sdata
);
3137 if (free_plinks
!= sdata
->u
.sta
.accepting_plinks
)
3138 ieee80211_if_config_beacon(dev
);
3140 mod_timer(&ifsta
->timer
, jiffies
+
3141 IEEE80211_MESH_HOUSEKEEPING_INTERVAL
);
3145 void ieee80211_start_mesh(struct net_device
*dev
)
3147 struct ieee80211_if_sta
*ifsta
;
3148 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3149 ifsta
= &sdata
->u
.sta
;
3150 ifsta
->state
= IEEE80211_MESH_UP
;
3151 ieee80211_sta_timer((unsigned long)sdata
);
3156 void ieee80211_sta_timer(unsigned long data
)
3158 struct ieee80211_sub_if_data
*sdata
=
3159 (struct ieee80211_sub_if_data
*) data
;
3160 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3161 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
3163 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3164 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3167 void ieee80211_sta_work(struct work_struct
*work
)
3169 struct ieee80211_sub_if_data
*sdata
=
3170 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
3171 struct net_device
*dev
= sdata
->dev
;
3172 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3173 struct ieee80211_if_sta
*ifsta
;
3174 struct sk_buff
*skb
;
3176 if (!netif_running(dev
))
3179 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
3182 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
3183 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
3184 sdata
->vif
.type
!= IEEE80211_IF_TYPE_MESH_POINT
) {
3185 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
3186 "(type=%d)\n", dev
->name
, sdata
->vif
.type
);
3189 ifsta
= &sdata
->u
.sta
;
3191 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
3192 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
3194 #ifdef CONFIG_MAC80211_MESH
3195 if (ifsta
->preq_queue_len
&&
3197 ifsta
->last_preq
+ msecs_to_jiffies(ifsta
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
3198 mesh_path_start_discovery(dev
);
3201 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
3202 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
3203 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
3204 if (ifsta
->scan_ssid_len
)
3205 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
3207 ieee80211_sta_start_scan(dev
, NULL
, 0);
3211 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
3212 if (ieee80211_sta_config_auth(dev
, ifsta
))
3214 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3215 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
3218 switch (ifsta
->state
) {
3219 case IEEE80211_DISABLED
:
3221 case IEEE80211_AUTHENTICATE
:
3222 ieee80211_authenticate(dev
, ifsta
);
3224 case IEEE80211_ASSOCIATE
:
3225 ieee80211_associate(dev
, ifsta
);
3227 case IEEE80211_ASSOCIATED
:
3228 ieee80211_associated(dev
, ifsta
);
3230 case IEEE80211_IBSS_SEARCH
:
3231 ieee80211_sta_find_ibss(dev
, ifsta
);
3233 case IEEE80211_IBSS_JOINED
:
3234 ieee80211_sta_merge_ibss(dev
, ifsta
);
3236 #ifdef CONFIG_MAC80211_MESH
3237 case IEEE80211_MESH_UP
:
3238 ieee80211_mesh_housekeeping(dev
, ifsta
);
3242 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
3247 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
3248 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
3249 "mixed-cell disabled - disassociate\n", dev
->name
);
3251 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
3252 ieee80211_set_disassoc(dev
, ifsta
, 0);
3257 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
3258 struct ieee80211_if_sta
*ifsta
)
3260 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3262 if (local
->ops
->reset_tsf
) {
3263 /* Reset own TSF to allow time synchronization work. */
3264 local
->ops
->reset_tsf(local_to_hw(local
));
3267 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
3270 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
3271 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3272 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
3273 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
3274 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
3275 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
3277 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3278 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
3280 ifsta
->auth_transaction
= -1;
3281 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
3282 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
3283 netif_carrier_off(dev
);
3287 void ieee80211_sta_req_auth(struct net_device
*dev
,
3288 struct ieee80211_if_sta
*ifsta
)
3290 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3291 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3293 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3296 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
3297 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
3298 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
3299 IEEE80211_STA_AUTO_SSID_SEL
))) {
3300 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3301 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3305 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
3306 const char *ssid
, int ssid_len
)
3308 int tmp
, hidden_ssid
;
3310 if (ssid_len
== ifsta
->ssid_len
&&
3311 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
3314 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
3320 if (ssid
[tmp
] != '\0') {
3326 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
3329 if (ssid_len
== 1 && ssid
[0] == ' ')
3335 static int ieee80211_sta_config_auth(struct net_device
*dev
,
3336 struct ieee80211_if_sta
*ifsta
)
3338 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3339 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3340 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
3341 int top_rssi
= 0, freq
;
3343 if (!(ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
3344 IEEE80211_STA_AUTO_BSSID_SEL
| IEEE80211_STA_AUTO_CHANNEL_SEL
))) {
3345 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3346 ieee80211_sta_reset_auth(dev
, ifsta
);
3350 spin_lock_bh(&local
->sta_bss_lock
);
3351 freq
= local
->oper_channel
->center_freq
;
3352 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3353 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
3356 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
3357 !!sdata
->default_key
)
3360 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
3364 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
3365 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
3368 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
3369 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
3372 if (!selected
|| top_rssi
< bss
->rssi
) {
3374 top_rssi
= bss
->rssi
;
3378 atomic_inc(&selected
->users
);
3379 spin_unlock_bh(&local
->sta_bss_lock
);
3382 ieee80211_set_freq(local
, selected
->freq
);
3383 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
3384 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
3385 selected
->ssid_len
);
3386 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
3387 ieee80211_sta_def_wmm_params(dev
, selected
, 0);
3388 ieee80211_rx_bss_put(dev
, selected
);
3389 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3390 ieee80211_sta_reset_auth(dev
, ifsta
);
3393 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
3394 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
3395 ieee80211_sta_start_scan(dev
, NULL
, 0);
3397 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
3399 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3400 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3402 ifsta
->state
= IEEE80211_DISABLED
;
3408 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
3409 struct ieee80211_if_sta
*ifsta
)
3411 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3412 struct ieee80211_sta_bss
*bss
;
3413 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3414 struct ieee80211_supported_band
*sband
;
3415 u8 bssid
[ETH_ALEN
], *pos
;
3417 DECLARE_MAC_BUF(mac
);
3420 /* Easier testing, use fixed BSSID. */
3421 memset(bssid
, 0xfe, ETH_ALEN
);
3423 /* Generate random, not broadcast, locally administered BSSID. Mix in
3424 * own MAC address to make sure that devices that do not have proper
3425 * random number generator get different BSSID. */
3426 get_random_bytes(bssid
, ETH_ALEN
);
3427 for (i
= 0; i
< ETH_ALEN
; i
++)
3428 bssid
[i
] ^= dev
->dev_addr
[i
];
3433 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
3434 dev
->name
, print_mac(mac
, bssid
));
3436 bss
= ieee80211_rx_bss_add(dev
, bssid
,
3437 local
->hw
.conf
.channel
->center_freq
,
3438 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
3442 bss
->band
= local
->hw
.conf
.channel
->band
;
3443 sband
= local
->hw
.wiphy
->bands
[bss
->band
];
3445 if (local
->hw
.conf
.beacon_int
== 0)
3446 local
->hw
.conf
.beacon_int
= 10000;
3447 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
3448 bss
->last_update
= jiffies
;
3449 bss
->capability
= WLAN_CAPABILITY_IBSS
;
3450 if (sdata
->default_key
) {
3451 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
3453 sdata
->drop_unencrypted
= 0;
3454 bss
->supp_rates_len
= sband
->n_bitrates
;
3455 pos
= bss
->supp_rates
;
3456 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
3457 int rate
= sband
->bitrates
[i
].bitrate
;
3458 *pos
++ = (u8
) (rate
/ 5);
3461 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3465 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
3466 struct ieee80211_if_sta
*ifsta
)
3468 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3469 struct ieee80211_sta_bss
*bss
;
3473 DECLARE_MAC_BUF(mac
);
3474 DECLARE_MAC_BUF(mac2
);
3476 if (ifsta
->ssid_len
== 0)
3479 active_ibss
= ieee80211_sta_active_ibss(dev
);
3480 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3481 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
3482 dev
->name
, active_ibss
);
3483 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3484 spin_lock_bh(&local
->sta_bss_lock
);
3485 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3486 if (ifsta
->ssid_len
!= bss
->ssid_len
||
3487 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
3488 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
3490 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3491 printk(KERN_DEBUG
" bssid=%s found\n",
3492 print_mac(mac
, bss
->bssid
));
3493 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3494 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
3496 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
3499 spin_unlock_bh(&local
->sta_bss_lock
);
3501 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3502 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
3503 "%s\n", print_mac(mac
, bssid
), print_mac(mac2
, ifsta
->bssid
));
3504 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3505 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
3506 (bss
= ieee80211_rx_bss_get(dev
, bssid
,
3507 local
->hw
.conf
.channel
->center_freq
,
3508 ifsta
->ssid
, ifsta
->ssid_len
))) {
3509 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
3510 " based on configured SSID\n",
3511 dev
->name
, print_mac(mac
, bssid
));
3512 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3514 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3515 printk(KERN_DEBUG
" did not try to join ibss\n");
3516 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3518 /* Selected IBSS not found in current scan results - try to scan */
3519 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3520 !ieee80211_sta_active_ibss(dev
)) {
3521 mod_timer(&ifsta
->timer
, jiffies
+
3522 IEEE80211_IBSS_MERGE_INTERVAL
);
3523 } else if (time_after(jiffies
, local
->last_scan_completed
+
3524 IEEE80211_SCAN_INTERVAL
)) {
3525 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
3526 "join\n", dev
->name
);
3527 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
3529 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
3530 int interval
= IEEE80211_SCAN_INTERVAL
;
3532 if (time_after(jiffies
, ifsta
->ibss_join_req
+
3533 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
3534 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
3535 (!(local
->oper_channel
->flags
&
3536 IEEE80211_CHAN_NO_IBSS
)))
3537 return ieee80211_sta_create_ibss(dev
, ifsta
);
3538 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
3539 printk(KERN_DEBUG
"%s: IBSS not allowed on"
3540 " %d MHz\n", dev
->name
,
3541 local
->hw
.conf
.channel
->center_freq
);
3544 /* No IBSS found - decrease scan interval and continue
3546 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
3549 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3550 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
3558 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
3560 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3561 struct ieee80211_if_sta
*ifsta
;
3563 if (len
> IEEE80211_MAX_SSID_LEN
)
3566 ifsta
= &sdata
->u
.sta
;
3568 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
3569 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
3570 memcpy(ifsta
->ssid
, ssid
, len
);
3571 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
3572 ifsta
->ssid_len
= len
;
3575 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
3577 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
3578 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3579 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
3580 ifsta
->ibss_join_req
= jiffies
;
3581 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3582 return ieee80211_sta_find_ibss(dev
, ifsta
);
3588 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
3590 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3591 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3592 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
3593 *len
= ifsta
->ssid_len
;
3598 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
3600 struct ieee80211_sub_if_data
*sdata
;
3601 struct ieee80211_if_sta
*ifsta
;
3604 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3605 ifsta
= &sdata
->u
.sta
;
3607 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3608 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
3609 res
= ieee80211_if_config(dev
);
3611 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
3612 "the low-level driver\n", dev
->name
);
3617 if (is_valid_ether_addr(bssid
))
3618 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
3620 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
3626 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
3627 struct ieee80211_sub_if_data
*sdata
,
3630 struct sk_buff
*skb
;
3631 struct ieee80211_hdr
*nullfunc
;
3634 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
3636 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
3637 "frame\n", sdata
->dev
->name
);
3640 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3642 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
3643 memset(nullfunc
, 0, 24);
3644 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
3645 IEEE80211_FCTL_TODS
;
3647 fc
|= IEEE80211_FCTL_PM
;
3648 nullfunc
->frame_control
= cpu_to_le16(fc
);
3649 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3650 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
3651 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3653 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
3657 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data
*sdata
)
3659 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
||
3660 ieee80211_vif_is_mesh(&sdata
->vif
))
3661 ieee80211_sta_timer((unsigned long)sdata
);
3664 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
3666 struct ieee80211_local
*local
= hw_to_local(hw
);
3667 struct net_device
*dev
= local
->scan_dev
;
3668 struct ieee80211_sub_if_data
*sdata
;
3669 union iwreq_data wrqu
;
3671 local
->last_scan_completed
= jiffies
;
3672 memset(&wrqu
, 0, sizeof(wrqu
));
3673 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
3675 if (local
->sta_hw_scanning
) {
3676 local
->sta_hw_scanning
= 0;
3677 if (ieee80211_hw_config(local
))
3678 printk(KERN_DEBUG
"%s: failed to restore operational "
3679 "channel after scan\n", dev
->name
);
3680 /* Restart STA timer for HW scan case */
3682 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
)
3683 ieee80211_restart_sta_timer(sdata
);
3689 local
->sta_sw_scanning
= 0;
3690 if (ieee80211_hw_config(local
))
3691 printk(KERN_DEBUG
"%s: failed to restore operational "
3692 "channel after scan\n", dev
->name
);
3695 netif_tx_lock_bh(local
->mdev
);
3696 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
3697 local
->ops
->configure_filter(local_to_hw(local
),
3698 FIF_BCN_PRBRESP_PROMISC
,
3699 &local
->filter_flags
,
3700 local
->mdev
->mc_count
,
3701 local
->mdev
->mc_list
);
3703 netif_tx_unlock_bh(local
->mdev
);
3706 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3708 /* No need to wake the master device. */
3709 if (sdata
->dev
== local
->mdev
)
3712 /* Tell AP we're back */
3713 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3714 sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
3715 ieee80211_send_nullfunc(local
, sdata
, 0);
3717 ieee80211_restart_sta_timer(sdata
);
3719 netif_wake_queue(sdata
->dev
);
3724 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3725 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
3726 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3727 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
3728 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3729 !ieee80211_sta_active_ibss(dev
)))
3730 ieee80211_sta_find_ibss(dev
, ifsta
);
3733 EXPORT_SYMBOL(ieee80211_scan_completed
);
3735 void ieee80211_sta_scan_work(struct work_struct
*work
)
3737 struct ieee80211_local
*local
=
3738 container_of(work
, struct ieee80211_local
, scan_work
.work
);
3739 struct net_device
*dev
= local
->scan_dev
;
3740 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3741 struct ieee80211_supported_band
*sband
;
3742 struct ieee80211_channel
*chan
;
3744 unsigned long next_delay
= 0;
3746 if (!local
->sta_sw_scanning
)
3749 switch (local
->scan_state
) {
3750 case SCAN_SET_CHANNEL
:
3752 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
3753 * after we successfully scanned the last channel of the last
3754 * band (and the last band is supported by the hw)
3756 if (local
->scan_band
< IEEE80211_NUM_BANDS
)
3757 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3762 * If we are at an unsupported band and have more bands
3763 * left to scan, advance to the next supported one.
3765 while (!sband
&& local
->scan_band
< IEEE80211_NUM_BANDS
- 1) {
3767 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3768 local
->scan_channel_idx
= 0;
3771 /* if no more bands/channels left, complete scan */
3772 if (!sband
|| local
->scan_channel_idx
>= sband
->n_channels
) {
3773 ieee80211_scan_completed(local_to_hw(local
));
3777 chan
= &sband
->channels
[local
->scan_channel_idx
];
3779 if (chan
->flags
& IEEE80211_CHAN_DISABLED
||
3780 (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3781 chan
->flags
& IEEE80211_CHAN_NO_IBSS
))
3785 local
->scan_channel
= chan
;
3786 if (ieee80211_hw_config(local
)) {
3787 printk(KERN_DEBUG
"%s: failed to set freq to "
3788 "%d MHz for scan\n", dev
->name
,
3794 /* advance state machine to next channel/band */
3795 local
->scan_channel_idx
++;
3796 if (local
->scan_channel_idx
>= sband
->n_channels
) {
3798 * scan_band may end up == IEEE80211_NUM_BANDS, but
3799 * we'll catch that case above and complete the scan
3800 * if that is the case.
3803 local
->scan_channel_idx
= 0;
3809 next_delay
= IEEE80211_PROBE_DELAY
+
3810 usecs_to_jiffies(local
->hw
.channel_change_time
);
3811 local
->scan_state
= SCAN_SEND_PROBE
;
3813 case SCAN_SEND_PROBE
:
3814 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
3815 local
->scan_state
= SCAN_SET_CHANNEL
;
3817 if (local
->scan_channel
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)
3819 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
3820 local
->scan_ssid_len
);
3821 next_delay
= IEEE80211_CHANNEL_TIME
;
3825 if (local
->sta_sw_scanning
)
3826 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3831 static int ieee80211_sta_start_scan(struct net_device
*dev
,
3832 u8
*ssid
, size_t ssid_len
)
3834 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3835 struct ieee80211_sub_if_data
*sdata
;
3837 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
3840 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
3841 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
3844 * ScanType: ACTIVE, PASSIVE
3845 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
3846 * a Probe frame during active scanning
3848 * MinChannelTime (>= ProbeDelay), in TU
3849 * MaxChannelTime: (>= MinChannelTime), in TU
3852 /* MLME-SCAN.confirm
3854 * ResultCode: SUCCESS, INVALID_PARAMETERS
3857 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3858 if (local
->scan_dev
== dev
)
3863 if (local
->ops
->hw_scan
) {
3864 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
3867 local
->sta_hw_scanning
= 1;
3868 local
->scan_dev
= dev
;
3873 local
->sta_sw_scanning
= 1;
3876 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3878 /* Don't stop the master interface, otherwise we can't transmit
3880 if (sdata
->dev
== local
->mdev
)
3883 netif_stop_queue(sdata
->dev
);
3884 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3885 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
3886 ieee80211_send_nullfunc(local
, sdata
, 1);
3891 local
->scan_ssid_len
= ssid_len
;
3892 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
3894 local
->scan_ssid_len
= 0;
3895 local
->scan_state
= SCAN_SET_CHANNEL
;
3896 local
->scan_channel_idx
= 0;
3897 local
->scan_band
= IEEE80211_BAND_2GHZ
;
3898 local
->scan_dev
= dev
;
3900 netif_tx_lock_bh(local
->mdev
);
3901 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
3902 local
->ops
->configure_filter(local_to_hw(local
),
3903 FIF_BCN_PRBRESP_PROMISC
,
3904 &local
->filter_flags
,
3905 local
->mdev
->mc_count
,
3906 local
->mdev
->mc_list
);
3907 netif_tx_unlock_bh(local
->mdev
);
3909 /* TODO: start scan as soon as all nullfunc frames are ACKed */
3910 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3911 IEEE80211_CHANNEL_TIME
);
3917 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
3919 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3920 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3921 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3923 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3924 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
3926 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3927 if (local
->scan_dev
== dev
)
3932 ifsta
->scan_ssid_len
= ssid_len
;
3934 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
3935 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
3936 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3941 ieee80211_sta_scan_result(struct net_device
*dev
,
3942 struct ieee80211_sta_bss
*bss
,
3943 char *current_ev
, char *end_buf
)
3945 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3946 struct iw_event iwe
;
3948 if (time_after(jiffies
,
3949 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
3952 memset(&iwe
, 0, sizeof(iwe
));
3953 iwe
.cmd
= SIOCGIWAP
;
3954 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
3955 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
3956 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3959 memset(&iwe
, 0, sizeof(iwe
));
3960 iwe
.cmd
= SIOCGIWESSID
;
3961 if (bss_mesh_cfg(bss
)) {
3962 iwe
.u
.data
.length
= bss_mesh_id_len(bss
);
3963 iwe
.u
.data
.flags
= 1;
3964 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3967 iwe
.u
.data
.length
= bss
->ssid_len
;
3968 iwe
.u
.data
.flags
= 1;
3969 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3973 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)
3974 || bss_mesh_cfg(bss
)) {
3975 memset(&iwe
, 0, sizeof(iwe
));
3976 iwe
.cmd
= SIOCGIWMODE
;
3977 if (bss_mesh_cfg(bss
))
3978 iwe
.u
.mode
= IW_MODE_MESH
;
3979 else if (bss
->capability
& WLAN_CAPABILITY_ESS
)
3980 iwe
.u
.mode
= IW_MODE_MASTER
;
3982 iwe
.u
.mode
= IW_MODE_ADHOC
;
3983 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3987 memset(&iwe
, 0, sizeof(iwe
));
3988 iwe
.cmd
= SIOCGIWFREQ
;
3989 iwe
.u
.freq
.m
= bss
->freq
;
3991 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3994 memset(&iwe
, 0, sizeof(iwe
));
3995 iwe
.cmd
= SIOCGIWFREQ
;
3996 iwe
.u
.freq
.m
= ieee80211_frequency_to_channel(bss
->freq
);
3998 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
4001 memset(&iwe
, 0, sizeof(iwe
));
4003 iwe
.u
.qual
.qual
= bss
->signal
;
4004 iwe
.u
.qual
.level
= bss
->rssi
;
4005 iwe
.u
.qual
.noise
= bss
->noise
;
4006 iwe
.u
.qual
.updated
= local
->wstats_flags
;
4007 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
4010 memset(&iwe
, 0, sizeof(iwe
));
4011 iwe
.cmd
= SIOCGIWENCODE
;
4012 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
4013 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
4015 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
4016 iwe
.u
.data
.length
= 0;
4017 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
4019 if (bss
&& bss
->wpa_ie
) {
4020 memset(&iwe
, 0, sizeof(iwe
));
4021 iwe
.cmd
= IWEVGENIE
;
4022 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
4023 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
4027 if (bss
&& bss
->rsn_ie
) {
4028 memset(&iwe
, 0, sizeof(iwe
));
4029 iwe
.cmd
= IWEVGENIE
;
4030 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
4031 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
4035 if (bss
&& bss
->supp_rates_len
> 0) {
4036 /* display all supported rates in readable format */
4037 char *p
= current_ev
+ IW_EV_LCP_LEN
;
4040 memset(&iwe
, 0, sizeof(iwe
));
4041 iwe
.cmd
= SIOCGIWRATE
;
4042 /* Those two flags are ignored... */
4043 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
4045 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
4046 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
4048 p
= iwe_stream_add_value(current_ev
, p
,
4049 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
4056 buf
= kmalloc(30, GFP_ATOMIC
);
4058 memset(&iwe
, 0, sizeof(iwe
));
4059 iwe
.cmd
= IWEVCUSTOM
;
4060 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
4061 iwe
.u
.data
.length
= strlen(buf
);
4062 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4068 if (bss_mesh_cfg(bss
)) {
4070 struct bss_mesh_config
*cfg
= bss_mesh_cfg(bss
);
4071 buf
= kmalloc(50, GFP_ATOMIC
);
4073 memset(&iwe
, 0, sizeof(iwe
));
4074 iwe
.cmd
= IWEVCUSTOM
;
4075 sprintf(buf
, "Mesh network (version %d)",
4077 iwe
.u
.data
.length
= strlen(buf
);
4078 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4080 sprintf(buf
, "Path Selection Protocol ID: "
4081 "0x%08X", cfg
->path_proto_id
);
4082 iwe
.u
.data
.length
= strlen(buf
);
4083 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4085 sprintf(buf
, "Path Selection Metric ID: "
4086 "0x%08X", cfg
->path_metric_id
);
4087 iwe
.u
.data
.length
= strlen(buf
);
4088 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4090 sprintf(buf
, "Congestion Control Mode ID: "
4091 "0x%08X", cfg
->cong_control_id
);
4092 iwe
.u
.data
.length
= strlen(buf
);
4093 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4095 sprintf(buf
, "Channel Precedence: "
4096 "0x%08X", cfg
->channel_precedence
);
4097 iwe
.u
.data
.length
= strlen(buf
);
4098 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
4108 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
4110 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4111 char *current_ev
= buf
;
4112 char *end_buf
= buf
+ len
;
4113 struct ieee80211_sta_bss
*bss
;
4115 spin_lock_bh(&local
->sta_bss_lock
);
4116 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
4117 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
4118 spin_unlock_bh(&local
->sta_bss_lock
);
4121 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
4124 spin_unlock_bh(&local
->sta_bss_lock
);
4125 return current_ev
- buf
;
4129 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
4131 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4132 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4133 kfree(ifsta
->extra_ie
);
4135 ifsta
->extra_ie
= NULL
;
4136 ifsta
->extra_ie_len
= 0;
4139 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
4140 if (!ifsta
->extra_ie
) {
4141 ifsta
->extra_ie_len
= 0;
4144 memcpy(ifsta
->extra_ie
, ie
, len
);
4145 ifsta
->extra_ie_len
= len
;
4150 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
4151 struct sk_buff
*skb
, u8
*bssid
,
4154 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4155 struct sta_info
*sta
;
4156 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4157 DECLARE_MAC_BUF(mac
);
4159 /* TODO: Could consider removing the least recently used entry and
4160 * allow new one to be added. */
4161 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
4162 if (net_ratelimit()) {
4163 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
4164 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
4169 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
4170 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
4172 sta
= sta_info_alloc(sdata
, addr
, GFP_ATOMIC
);
4176 sta
->flags
|= WLAN_STA_AUTHORIZED
;
4178 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] =
4179 sdata
->u
.sta
.supp_rates_bits
[local
->hw
.conf
.channel
->band
];
4181 rate_control_rate_init(sta
, local
);
4183 if (sta_info_insert(sta
))
4190 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
4192 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4193 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4195 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
4198 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
4199 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
4202 ieee80211_send_deauth(dev
, ifsta
, reason
);
4203 ieee80211_set_disassoc(dev
, ifsta
, 1);
4208 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
4210 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4211 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4213 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
4216 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4219 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
4222 ieee80211_send_disassoc(dev
, ifsta
, reason
);
4223 ieee80211_set_disassoc(dev
, ifsta
, 0);