2 * BSS client mode implementation
3 * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
15 * order BSS list by RSSI(?) ("quality of AP")
16 * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
19 #include <linux/delay.h>
20 #include <linux/if_ether.h>
21 #include <linux/skbuff.h>
22 #include <linux/netdevice.h>
23 #include <linux/if_arp.h>
24 #include <linux/wireless.h>
25 #include <linux/random.h>
26 #include <linux/etherdevice.h>
27 #include <net/iw_handler.h>
28 #include <asm/types.h>
30 #include <net/mac80211.h>
31 #include "ieee80211_i.h"
32 #include "ieee80211_rate.h"
33 #include "ieee80211_led.h"
36 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
37 #define IEEE80211_AUTH_MAX_TRIES 3
38 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
39 #define IEEE80211_ASSOC_MAX_TRIES 3
40 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
41 #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
42 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
43 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
44 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
45 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
46 #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
48 #define IEEE80211_PROBE_DELAY (HZ / 33)
49 #define IEEE80211_CHANNEL_TIME (HZ / 33)
50 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
51 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
52 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
53 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
54 #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
56 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
59 #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
61 #define ERP_INFO_USE_PROTECTION BIT(1)
63 /* mgmt header + 1 byte action code */
64 #define IEEE80211_MIN_ACTION_SIZE (24 + 1)
66 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
67 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
68 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
69 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
70 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
72 /* next values represent the buffer size for A-MPDU frame.
73 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
74 #define IEEE80211_MIN_AMPDU_BUF 0x8
75 #define IEEE80211_MAX_AMPDU_BUF 0x40
77 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
78 u8
*ssid
, size_t ssid_len
);
79 static struct ieee80211_sta_bss
*
80 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
81 u8
*ssid
, u8 ssid_len
);
82 static void ieee80211_rx_bss_put(struct net_device
*dev
,
83 struct ieee80211_sta_bss
*bss
);
84 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
85 struct ieee80211_if_sta
*ifsta
);
86 static int ieee80211_sta_wep_configured(struct net_device
*dev
);
87 static int ieee80211_sta_start_scan(struct net_device
*dev
,
88 u8
*ssid
, size_t ssid_len
);
89 static int ieee80211_sta_config_auth(struct net_device
*dev
,
90 struct ieee80211_if_sta
*ifsta
);
93 void ieee802_11_parse_elems(u8
*start
, size_t len
,
94 struct ieee802_11_elems
*elems
)
99 memset(elems
, 0, sizeof(*elems
));
114 elems
->ssid_len
= elen
;
116 case WLAN_EID_SUPP_RATES
:
117 elems
->supp_rates
= pos
;
118 elems
->supp_rates_len
= elen
;
120 case WLAN_EID_FH_PARAMS
:
121 elems
->fh_params
= pos
;
122 elems
->fh_params_len
= elen
;
124 case WLAN_EID_DS_PARAMS
:
125 elems
->ds_params
= pos
;
126 elems
->ds_params_len
= elen
;
128 case WLAN_EID_CF_PARAMS
:
129 elems
->cf_params
= pos
;
130 elems
->cf_params_len
= elen
;
134 elems
->tim_len
= elen
;
136 case WLAN_EID_IBSS_PARAMS
:
137 elems
->ibss_params
= pos
;
138 elems
->ibss_params_len
= elen
;
140 case WLAN_EID_CHALLENGE
:
141 elems
->challenge
= pos
;
142 elems
->challenge_len
= elen
;
145 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
147 /* Microsoft OUI (00:50:F2) */
149 /* OUI Type 1 - WPA IE */
151 elems
->wpa_len
= elen
;
152 } else if (elen
>= 5 && pos
[3] == 2) {
154 elems
->wmm_info
= pos
;
155 elems
->wmm_info_len
= elen
;
156 } else if (pos
[4] == 1) {
157 elems
->wmm_param
= pos
;
158 elems
->wmm_param_len
= elen
;
165 elems
->rsn_len
= elen
;
167 case WLAN_EID_ERP_INFO
:
168 elems
->erp_info
= pos
;
169 elems
->erp_info_len
= elen
;
171 case WLAN_EID_EXT_SUPP_RATES
:
172 elems
->ext_supp_rates
= pos
;
173 elems
->ext_supp_rates_len
= elen
;
175 case WLAN_EID_HT_CAPABILITY
:
176 elems
->ht_cap_elem
= pos
;
177 elems
->ht_cap_elem_len
= elen
;
179 case WLAN_EID_HT_EXTRA_INFO
:
180 elems
->ht_info_elem
= pos
;
181 elems
->ht_info_elem_len
= elen
;
183 case WLAN_EID_MESH_ID
:
184 elems
->mesh_id
= pos
;
185 elems
->mesh_id_len
= elen
;
187 case WLAN_EID_MESH_CONFIG
:
188 elems
->mesh_config
= pos
;
189 elems
->mesh_config_len
= elen
;
191 case WLAN_EID_PEER_LINK
:
192 elems
->peer_link
= pos
;
193 elems
->peer_link_len
= elen
;
197 elems
->preq_len
= elen
;
201 elems
->prep_len
= elen
;
205 elems
->perr_len
= elen
;
217 static int ecw2cw(int ecw
)
219 return (1 << ecw
) - 1;
222 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
223 struct ieee80211_if_sta
*ifsta
,
224 u8
*wmm_param
, size_t wmm_param_len
)
226 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
227 struct ieee80211_tx_queue_params params
;
232 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
234 count
= wmm_param
[6] & 0x0f;
235 if (count
== ifsta
->wmm_last_param_set
)
237 ifsta
->wmm_last_param_set
= count
;
240 left
= wmm_param_len
- 8;
242 memset(¶ms
, 0, sizeof(params
));
244 if (!local
->ops
->conf_tx
)
248 for (; left
>= 4; left
-= 4, pos
+= 4) {
249 int aci
= (pos
[0] >> 5) & 0x03;
250 int acm
= (pos
[0] >> 4) & 0x01;
255 queue
= IEEE80211_TX_QUEUE_DATA3
;
257 local
->wmm_acm
|= BIT(0) | BIT(3);
261 queue
= IEEE80211_TX_QUEUE_DATA1
;
263 local
->wmm_acm
|= BIT(4) | BIT(5);
267 queue
= IEEE80211_TX_QUEUE_DATA0
;
269 local
->wmm_acm
|= BIT(6) | BIT(7);
274 queue
= IEEE80211_TX_QUEUE_DATA2
;
276 local
->wmm_acm
|= BIT(1) | BIT(2);
281 params
.aifs
= pos
[0] & 0x0f;
282 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
283 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
284 params
.txop
= pos
[2] | (pos
[3] << 8);
285 #ifdef CONFIG_MAC80211_DEBUG
286 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
287 "cWmin=%d cWmax=%d txop=%d\n",
288 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
289 params
.cw_max
, params
.txop
);
291 /* TODO: handle ACM (block TX, fallback to next lowest allowed
293 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
294 printk(KERN_DEBUG
"%s: failed to set TX queue "
295 "parameters for queue %d\n", dev
->name
, queue
);
301 static u32
ieee80211_handle_erp_ie(struct ieee80211_sub_if_data
*sdata
,
304 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
305 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
306 bool use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
307 bool preamble_mode
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) != 0;
308 DECLARE_MAC_BUF(mac
);
311 if (use_protection
!= bss_conf
->use_cts_prot
) {
312 if (net_ratelimit()) {
313 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
316 use_protection
? "enabled" : "disabled",
317 print_mac(mac
, ifsta
->bssid
));
319 bss_conf
->use_cts_prot
= use_protection
;
320 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
323 if (preamble_mode
!= bss_conf
->use_short_preamble
) {
324 if (net_ratelimit()) {
325 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
328 (preamble_mode
== WLAN_ERP_PREAMBLE_SHORT
) ?
330 print_mac(mac
, ifsta
->bssid
));
332 bss_conf
->use_short_preamble
= preamble_mode
;
333 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
339 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap
*ht_cap_ie
,
340 struct ieee80211_ht_info
*ht_info
)
346 memset(ht_info
, 0, sizeof(*ht_info
));
349 u8 ampdu_info
= ht_cap_ie
->ampdu_params_info
;
351 ht_info
->ht_supported
= 1;
352 ht_info
->cap
= le16_to_cpu(ht_cap_ie
->cap_info
);
353 ht_info
->ampdu_factor
=
354 ampdu_info
& IEEE80211_HT_CAP_AMPDU_FACTOR
;
355 ht_info
->ampdu_density
=
356 (ampdu_info
& IEEE80211_HT_CAP_AMPDU_DENSITY
) >> 2;
357 memcpy(ht_info
->supp_mcs_set
, ht_cap_ie
->supp_mcs_set
, 16);
359 ht_info
->ht_supported
= 0;
364 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
365 struct ieee80211_ht_addt_info
*ht_add_info_ie
,
366 struct ieee80211_ht_bss_info
*bss_info
)
368 if (bss_info
== NULL
)
371 memset(bss_info
, 0, sizeof(*bss_info
));
373 if (ht_add_info_ie
) {
375 op_mode
= le16_to_cpu(ht_add_info_ie
->operation_mode
);
377 bss_info
->primary_channel
= ht_add_info_ie
->control_chan
;
378 bss_info
->bss_cap
= ht_add_info_ie
->ht_param
;
379 bss_info
->bss_op_mode
= (u8
)(op_mode
& 0xff);
385 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
386 struct ieee80211_if_sta
*ifsta
)
391 union iwreq_data wrqu
;
393 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
396 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
397 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
401 len
= sprintf(buf
, "ASSOCINFO(");
402 if (ifsta
->assocreq_ies
) {
403 len
+= sprintf(buf
+ len
, "ReqIEs=");
404 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
405 len
+= sprintf(buf
+ len
, "%02x",
406 ifsta
->assocreq_ies
[i
]);
409 if (ifsta
->assocresp_ies
) {
410 if (ifsta
->assocreq_ies
)
411 len
+= sprintf(buf
+ len
, " ");
412 len
+= sprintf(buf
+ len
, "RespIEs=");
413 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
414 len
+= sprintf(buf
+ len
, "%02x",
415 ifsta
->assocresp_ies
[i
]);
418 len
+= sprintf(buf
+ len
, ")");
420 if (len
> IW_CUSTOM_MAX
) {
421 len
= sprintf(buf
, "ASSOCRESPIE=");
422 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
423 len
+= sprintf(buf
+ len
, "%02x",
424 ifsta
->assocresp_ies
[i
]);
428 memset(&wrqu
, 0, sizeof(wrqu
));
429 wrqu
.data
.length
= len
;
430 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
436 static void ieee80211_set_associated(struct net_device
*dev
,
437 struct ieee80211_if_sta
*ifsta
,
440 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
441 struct ieee80211_local
*local
= sdata
->local
;
442 union iwreq_data wrqu
;
443 u32 changed
= BSS_CHANGED_ASSOC
;
446 struct ieee80211_sta_bss
*bss
;
448 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
450 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
453 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
454 local
->hw
.conf
.channel
->center_freq
,
455 ifsta
->ssid
, ifsta
->ssid_len
);
457 if (bss
->has_erp_value
)
458 changed
|= ieee80211_handle_erp_ie(
459 sdata
, bss
->erp_value
);
460 ieee80211_rx_bss_put(dev
, bss
);
463 netif_carrier_on(dev
);
464 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
465 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
466 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
467 ieee80211_sta_send_associnfo(dev
, ifsta
);
469 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
471 netif_carrier_off(dev
);
472 ieee80211_reset_erp_info(dev
);
473 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
475 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
476 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
477 ifsta
->last_probe
= jiffies
;
478 ieee80211_led_assoc(local
, assoc
);
480 sdata
->bss_conf
.assoc
= assoc
;
481 ieee80211_bss_info_change_notify(sdata
, changed
);
484 static void ieee80211_set_disassoc(struct net_device
*dev
,
485 struct ieee80211_if_sta
*ifsta
, int deauth
)
488 ifsta
->auth_tries
= 0;
489 ifsta
->assoc_tries
= 0;
490 ieee80211_set_associated(dev
, ifsta
, 0);
493 void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
496 struct ieee80211_sub_if_data
*sdata
;
497 struct ieee80211_tx_packet_data
*pkt_data
;
499 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
500 skb
->dev
= sdata
->local
->mdev
;
501 skb_set_mac_header(skb
, 0);
502 skb_set_network_header(skb
, 0);
503 skb_set_transport_header(skb
, 0);
505 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
506 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
507 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
509 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
515 static void ieee80211_send_auth(struct net_device
*dev
,
516 struct ieee80211_if_sta
*ifsta
,
517 int transaction
, u8
*extra
, size_t extra_len
,
520 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
522 struct ieee80211_mgmt
*mgmt
;
524 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
525 sizeof(*mgmt
) + 6 + extra_len
);
527 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
528 "frame\n", dev
->name
);
531 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
533 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
534 memset(mgmt
, 0, 24 + 6);
535 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
536 IEEE80211_STYPE_AUTH
);
538 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
539 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
540 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
541 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
542 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
543 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
544 ifsta
->auth_transaction
= transaction
+ 1;
545 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
547 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
549 ieee80211_sta_tx(dev
, skb
, encrypt
);
553 static void ieee80211_authenticate(struct net_device
*dev
,
554 struct ieee80211_if_sta
*ifsta
)
556 DECLARE_MAC_BUF(mac
);
559 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
560 printk(KERN_DEBUG
"%s: authentication with AP %s"
562 dev
->name
, print_mac(mac
, ifsta
->bssid
));
563 ifsta
->state
= IEEE80211_DISABLED
;
567 ifsta
->state
= IEEE80211_AUTHENTICATE
;
568 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
569 dev
->name
, print_mac(mac
, ifsta
->bssid
));
571 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
573 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
577 static void ieee80211_send_assoc(struct net_device
*dev
,
578 struct ieee80211_if_sta
*ifsta
)
580 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
582 struct ieee80211_mgmt
*mgmt
;
586 struct ieee80211_sta_bss
*bss
;
588 struct ieee80211_supported_band
*sband
;
590 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
591 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
594 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
595 "frame\n", dev
->name
);
598 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
600 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
602 capab
= ifsta
->capab
;
604 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
) {
605 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
))
606 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
607 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
))
608 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
611 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
612 local
->hw
.conf
.channel
->center_freq
,
613 ifsta
->ssid
, ifsta
->ssid_len
);
615 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
616 capab
|= WLAN_CAPABILITY_PRIVACY
;
620 ieee80211_rx_bss_put(dev
, bss
);
623 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
625 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
626 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
627 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
629 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
631 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
632 IEEE80211_STYPE_REASSOC_REQ
);
633 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
634 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
635 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
639 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
640 IEEE80211_STYPE_ASSOC_REQ
);
641 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
642 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
646 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
647 *pos
++ = WLAN_EID_SSID
;
648 *pos
++ = ifsta
->ssid_len
;
649 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
651 len
= sband
->n_bitrates
;
654 pos
= skb_put(skb
, len
+ 2);
655 *pos
++ = WLAN_EID_SUPP_RATES
;
657 for (i
= 0; i
< len
; i
++) {
658 int rate
= sband
->bitrates
[i
].bitrate
;
659 *pos
++ = (u8
) (rate
/ 5);
662 if (sband
->n_bitrates
> len
) {
663 pos
= skb_put(skb
, sband
->n_bitrates
- len
+ 2);
664 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
665 *pos
++ = sband
->n_bitrates
- len
;
666 for (i
= len
; i
< sband
->n_bitrates
; i
++) {
667 int rate
= sband
->bitrates
[i
].bitrate
;
668 *pos
++ = (u8
) (rate
/ 5);
672 if (ifsta
->extra_ie
) {
673 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
674 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
677 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
678 pos
= skb_put(skb
, 9);
679 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
680 *pos
++ = 7; /* len */
681 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
684 *pos
++ = 2; /* WME */
685 *pos
++ = 0; /* WME info */
686 *pos
++ = 1; /* WME ver */
689 /* wmm support is a must to HT */
690 if (wmm
&& sband
->ht_info
.ht_supported
) {
691 __le16 tmp
= cpu_to_le16(sband
->ht_info
.cap
);
692 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
)+2);
693 *pos
++ = WLAN_EID_HT_CAPABILITY
;
694 *pos
++ = sizeof(struct ieee80211_ht_cap
);
695 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
696 memcpy(pos
, &tmp
, sizeof(u16
));
698 /* TODO: needs a define here for << 2 */
699 *pos
++ = sband
->ht_info
.ampdu_factor
|
700 (sband
->ht_info
.ampdu_density
<< 2);
701 memcpy(pos
, sband
->ht_info
.supp_mcs_set
, 16);
704 kfree(ifsta
->assocreq_ies
);
705 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
706 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
707 if (ifsta
->assocreq_ies
)
708 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
710 ieee80211_sta_tx(dev
, skb
, 0);
714 static void ieee80211_send_deauth(struct net_device
*dev
,
715 struct ieee80211_if_sta
*ifsta
, u16 reason
)
717 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
719 struct ieee80211_mgmt
*mgmt
;
721 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
723 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
724 "frame\n", dev
->name
);
727 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
729 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
731 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
732 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
733 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
734 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
735 IEEE80211_STYPE_DEAUTH
);
737 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
739 ieee80211_sta_tx(dev
, skb
, 0);
743 static void ieee80211_send_disassoc(struct net_device
*dev
,
744 struct ieee80211_if_sta
*ifsta
, u16 reason
)
746 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
748 struct ieee80211_mgmt
*mgmt
;
750 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
752 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
753 "frame\n", dev
->name
);
756 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
758 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
760 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
761 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
762 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
763 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
764 IEEE80211_STYPE_DISASSOC
);
766 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
768 ieee80211_sta_tx(dev
, skb
, 0);
772 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
773 struct ieee80211_if_sta
*ifsta
)
775 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
776 struct ieee80211_sta_bss
*bss
;
781 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
784 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
785 local
->hw
.conf
.channel
->center_freq
,
786 ifsta
->ssid
, ifsta
->ssid_len
);
790 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
791 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
792 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
794 ieee80211_rx_bss_put(dev
, bss
);
796 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
803 static void ieee80211_associate(struct net_device
*dev
,
804 struct ieee80211_if_sta
*ifsta
)
806 DECLARE_MAC_BUF(mac
);
808 ifsta
->assoc_tries
++;
809 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
810 printk(KERN_DEBUG
"%s: association with AP %s"
812 dev
->name
, print_mac(mac
, ifsta
->bssid
));
813 ifsta
->state
= IEEE80211_DISABLED
;
817 ifsta
->state
= IEEE80211_ASSOCIATE
;
818 printk(KERN_DEBUG
"%s: associate with AP %s\n",
819 dev
->name
, print_mac(mac
, ifsta
->bssid
));
820 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
821 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
822 "mixed-cell disabled - abort association\n", dev
->name
);
823 ifsta
->state
= IEEE80211_DISABLED
;
827 ieee80211_send_assoc(dev
, ifsta
);
829 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
833 static void ieee80211_associated(struct net_device
*dev
,
834 struct ieee80211_if_sta
*ifsta
)
836 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
837 struct sta_info
*sta
;
839 DECLARE_MAC_BUF(mac
);
841 /* TODO: start monitoring current AP signal quality and number of
842 * missed beacons. Scan other channels every now and then and search
844 /* TODO: remove expired BSSes */
846 ifsta
->state
= IEEE80211_ASSOCIATED
;
848 sta
= sta_info_get(local
, ifsta
->bssid
);
850 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
851 dev
->name
, print_mac(mac
, ifsta
->bssid
));
855 if (time_after(jiffies
,
856 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
857 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
858 printk(KERN_DEBUG
"%s: No ProbeResp from "
859 "current AP %s - assume out of "
861 dev
->name
, print_mac(mac
, ifsta
->bssid
));
865 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
867 local
->scan_ssid_len
);
868 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
870 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
871 if (time_after(jiffies
, ifsta
->last_probe
+
872 IEEE80211_PROBE_INTERVAL
)) {
873 ifsta
->last_probe
= jiffies
;
874 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
882 ifsta
->state
= IEEE80211_DISABLED
;
883 ieee80211_set_associated(dev
, ifsta
, 0);
885 mod_timer(&ifsta
->timer
, jiffies
+
886 IEEE80211_MONITORING_INTERVAL
);
891 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
892 u8
*ssid
, size_t ssid_len
)
894 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
895 struct ieee80211_supported_band
*sband
;
897 struct ieee80211_mgmt
*mgmt
;
898 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
901 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
903 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
904 "request\n", dev
->name
);
907 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
909 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
911 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
912 IEEE80211_STYPE_PROBE_REQ
);
913 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
915 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
916 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
918 memset(mgmt
->da
, 0xff, ETH_ALEN
);
919 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
921 pos
= skb_put(skb
, 2 + ssid_len
);
922 *pos
++ = WLAN_EID_SSID
;
924 memcpy(pos
, ssid
, ssid_len
);
926 supp_rates
= skb_put(skb
, 2);
927 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
929 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
931 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
932 struct ieee80211_rate
*rate
= &sband
->bitrates
[i
];
934 pos
= skb_put(skb
, 1);
936 } else if (supp_rates
[1] == 8) {
937 esupp_rates
= skb_put(skb
, 3);
938 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
940 pos
= &esupp_rates
[2];
942 pos
= skb_put(skb
, 1);
945 *pos
= rate
->bitrate
/ 5;
948 ieee80211_sta_tx(dev
, skb
, 0);
952 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
954 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
955 if (!sdata
|| !sdata
->default_key
||
956 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
962 static void ieee80211_auth_completed(struct net_device
*dev
,
963 struct ieee80211_if_sta
*ifsta
)
965 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
966 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
967 ieee80211_associate(dev
, ifsta
);
971 static void ieee80211_auth_challenge(struct net_device
*dev
,
972 struct ieee80211_if_sta
*ifsta
,
973 struct ieee80211_mgmt
*mgmt
,
977 struct ieee802_11_elems elems
;
979 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
980 pos
= mgmt
->u
.auth
.variable
;
981 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
982 if (!elems
.challenge
) {
983 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
984 "frame\n", dev
->name
);
987 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
988 elems
.challenge_len
+ 2, 1);
991 static void ieee80211_send_addba_resp(struct net_device
*dev
, u8
*da
, u16 tid
,
992 u8 dialog_token
, u16 status
, u16 policy
,
993 u16 buf_size
, u16 timeout
)
995 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
996 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
997 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
999 struct ieee80211_mgmt
*mgmt
;
1002 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1003 sizeof(mgmt
->u
.action
.u
.addba_resp
));
1005 printk(KERN_DEBUG
"%s: failed to allocate buffer "
1006 "for addba resp frame\n", dev
->name
);
1010 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1011 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1012 memset(mgmt
, 0, 24);
1013 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1014 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1015 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1016 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1018 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1019 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1020 IEEE80211_STYPE_ACTION
);
1022 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
1023 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1024 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
1025 mgmt
->u
.action
.u
.addba_resp
.dialog_token
= dialog_token
;
1027 capab
= (u16
)(policy
<< 1); /* bit 1 aggregation policy */
1028 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1029 capab
|= (u16
)(buf_size
<< 6); /* bit 15:6 max size of aggregation */
1031 mgmt
->u
.action
.u
.addba_resp
.capab
= cpu_to_le16(capab
);
1032 mgmt
->u
.action
.u
.addba_resp
.timeout
= cpu_to_le16(timeout
);
1033 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
1035 ieee80211_sta_tx(dev
, skb
, 0);
1040 void ieee80211_send_addba_request(struct net_device
*dev
, const u8
*da
,
1041 u16 tid
, u8 dialog_token
, u16 start_seq_num
,
1042 u16 agg_size
, u16 timeout
)
1044 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1045 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1046 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1047 struct sk_buff
*skb
;
1048 struct ieee80211_mgmt
*mgmt
;
1051 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1052 sizeof(mgmt
->u
.action
.u
.addba_req
));
1056 printk(KERN_ERR
"%s: failed to allocate buffer "
1057 "for addba request frame\n", dev
->name
);
1060 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1061 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1062 memset(mgmt
, 0, 24);
1063 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1064 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1065 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1066 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1068 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1070 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1071 IEEE80211_STYPE_ACTION
);
1073 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_req
));
1075 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1076 mgmt
->u
.action
.u
.addba_req
.action_code
= WLAN_ACTION_ADDBA_REQ
;
1078 mgmt
->u
.action
.u
.addba_req
.dialog_token
= dialog_token
;
1079 capab
= (u16
)(1 << 1); /* bit 1 aggregation policy */
1080 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1081 capab
|= (u16
)(agg_size
<< 6); /* bit 15:6 max size of aggergation */
1083 mgmt
->u
.action
.u
.addba_req
.capab
= cpu_to_le16(capab
);
1085 mgmt
->u
.action
.u
.addba_req
.timeout
= cpu_to_le16(timeout
);
1086 mgmt
->u
.action
.u
.addba_req
.start_seq_num
=
1087 cpu_to_le16(start_seq_num
<< 4);
1089 ieee80211_sta_tx(dev
, skb
, 0);
1092 static void ieee80211_sta_process_addba_request(struct net_device
*dev
,
1093 struct ieee80211_mgmt
*mgmt
,
1096 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1097 struct ieee80211_hw
*hw
= &local
->hw
;
1098 struct ieee80211_conf
*conf
= &hw
->conf
;
1099 struct sta_info
*sta
;
1100 struct tid_ampdu_rx
*tid_agg_rx
;
1101 u16 capab
, tid
, timeout
, ba_policy
, buf_size
, start_seq_num
, status
;
1103 int ret
= -EOPNOTSUPP
;
1104 DECLARE_MAC_BUF(mac
);
1106 sta
= sta_info_get(local
, mgmt
->sa
);
1110 /* extract session parameters from addba request frame */
1111 dialog_token
= mgmt
->u
.action
.u
.addba_req
.dialog_token
;
1112 timeout
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.timeout
);
1114 le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.start_seq_num
) >> 4;
1116 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.capab
);
1117 ba_policy
= (capab
& IEEE80211_ADDBA_PARAM_POLICY_MASK
) >> 1;
1118 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1119 buf_size
= (capab
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
) >> 6;
1121 status
= WLAN_STATUS_REQUEST_DECLINED
;
1123 /* sanity check for incoming parameters:
1124 * check if configuration can support the BA policy
1125 * and if buffer size does not exceeds max value */
1126 if (((ba_policy
!= 1)
1127 && (!(conf
->ht_conf
.cap
& IEEE80211_HT_CAP_DELAY_BA
)))
1128 || (buf_size
> IEEE80211_MAX_AMPDU_BUF
)) {
1129 status
= WLAN_STATUS_INVALID_QOS_PARAM
;
1130 #ifdef CONFIG_MAC80211_HT_DEBUG
1131 if (net_ratelimit())
1132 printk(KERN_DEBUG
"Block Ack Req with bad params from "
1133 "%s on tid %u. policy %d, buffer size %d\n",
1134 print_mac(mac
, mgmt
->sa
), tid
, ba_policy
,
1136 #endif /* CONFIG_MAC80211_HT_DEBUG */
1139 /* determine default buffer size */
1140 if (buf_size
== 0) {
1141 struct ieee80211_supported_band
*sband
;
1143 sband
= local
->hw
.wiphy
->bands
[conf
->channel
->band
];
1144 buf_size
= IEEE80211_MIN_AMPDU_BUF
;
1145 buf_size
= buf_size
<< sband
->ht_info
.ampdu_factor
;
1148 tid_agg_rx
= &sta
->ampdu_mlme
.tid_rx
[tid
];
1150 /* examine state machine */
1151 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1153 if (tid_agg_rx
->state
!= HT_AGG_STATE_IDLE
) {
1154 #ifdef CONFIG_MAC80211_HT_DEBUG
1155 if (net_ratelimit())
1156 printk(KERN_DEBUG
"unexpected Block Ack Req from "
1158 print_mac(mac
, mgmt
->sa
), tid
);
1159 #endif /* CONFIG_MAC80211_HT_DEBUG */
1163 /* prepare reordering buffer */
1164 tid_agg_rx
->reorder_buf
=
1165 kmalloc(buf_size
* sizeof(struct sk_buf
*), GFP_ATOMIC
);
1166 if (!tid_agg_rx
->reorder_buf
) {
1167 if (net_ratelimit())
1168 printk(KERN_ERR
"can not allocate reordering buffer "
1169 "to tid %d\n", tid
);
1172 memset(tid_agg_rx
->reorder_buf
, 0,
1173 buf_size
* sizeof(struct sk_buf
*));
1175 if (local
->ops
->ampdu_action
)
1176 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_START
,
1177 sta
->addr
, tid
, &start_seq_num
);
1178 #ifdef CONFIG_MAC80211_HT_DEBUG
1179 printk(KERN_DEBUG
"Rx A-MPDU on tid %d result %d", tid
, ret
);
1180 #endif /* CONFIG_MAC80211_HT_DEBUG */
1183 kfree(tid_agg_rx
->reorder_buf
);
1187 /* change state and send addba resp */
1188 tid_agg_rx
->state
= HT_AGG_STATE_OPERATIONAL
;
1189 tid_agg_rx
->dialog_token
= dialog_token
;
1190 tid_agg_rx
->ssn
= start_seq_num
;
1191 tid_agg_rx
->head_seq_num
= start_seq_num
;
1192 tid_agg_rx
->buf_size
= buf_size
;
1193 tid_agg_rx
->timeout
= timeout
;
1194 tid_agg_rx
->stored_mpdu_num
= 0;
1195 status
= WLAN_STATUS_SUCCESS
;
1197 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1200 ieee80211_send_addba_resp(sta
->dev
, sta
->addr
, tid
, dialog_token
,
1201 status
, 1, buf_size
, timeout
);
1205 static void ieee80211_sta_process_addba_resp(struct net_device
*dev
,
1206 struct ieee80211_mgmt
*mgmt
,
1209 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1210 struct ieee80211_hw
*hw
= &local
->hw
;
1211 struct sta_info
*sta
;
1216 sta
= sta_info_get(local
, mgmt
->sa
);
1220 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.capab
);
1221 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1223 state
= &sta
->ampdu_mlme
.tid_tx
[tid
].state
;
1225 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1227 if (mgmt
->u
.action
.u
.addba_resp
.dialog_token
!=
1228 sta
->ampdu_mlme
.tid_tx
[tid
].dialog_token
) {
1229 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1230 #ifdef CONFIG_MAC80211_HT_DEBUG
1231 printk(KERN_DEBUG
"wrong addBA response token, tid %d\n", tid
);
1232 #endif /* CONFIG_MAC80211_HT_DEBUG */
1237 del_timer_sync(&sta
->ampdu_mlme
.tid_tx
[tid
].addba_resp_timer
);
1238 #ifdef CONFIG_MAC80211_HT_DEBUG
1239 printk(KERN_DEBUG
"switched off addBA timer for tid %d \n", tid
);
1240 #endif /* CONFIG_MAC80211_HT_DEBUG */
1241 if (le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.status
)
1242 == WLAN_STATUS_SUCCESS
) {
1243 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1244 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1245 printk(KERN_DEBUG
"state not HT_ADDBA_REQUESTED_MSK:"
1251 if (*state
& HT_ADDBA_RECEIVED_MSK
)
1252 printk(KERN_DEBUG
"double addBA response\n");
1254 *state
|= HT_ADDBA_RECEIVED_MSK
;
1255 sta
->ampdu_mlme
.tid_tx
[tid
].addba_req_num
= 0;
1257 if (*state
== HT_AGG_STATE_OPERATIONAL
) {
1258 printk(KERN_DEBUG
"Aggregation on for tid %d \n", tid
);
1259 ieee80211_wake_queue(hw
, sta
->tid_to_tx_q
[tid
]);
1262 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1263 printk(KERN_DEBUG
"recipient accepted agg: tid %d \n", tid
);
1265 printk(KERN_DEBUG
"recipient rejected agg: tid %d \n", tid
);
1267 sta
->ampdu_mlme
.tid_tx
[tid
].addba_req_num
++;
1268 /* this will allow the state check in stop_BA_session */
1269 *state
= HT_AGG_STATE_OPERATIONAL
;
1270 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1271 ieee80211_stop_tx_ba_session(hw
, sta
->addr
, tid
,
1272 WLAN_BACK_INITIATOR
);
1277 void ieee80211_send_delba(struct net_device
*dev
, const u8
*da
, u16 tid
,
1278 u16 initiator
, u16 reason_code
)
1280 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1281 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1282 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1283 struct sk_buff
*skb
;
1284 struct ieee80211_mgmt
*mgmt
;
1287 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
+ 1 +
1288 sizeof(mgmt
->u
.action
.u
.delba
));
1291 printk(KERN_ERR
"%s: failed to allocate buffer "
1292 "for delba frame\n", dev
->name
);
1296 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1297 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1298 memset(mgmt
, 0, 24);
1299 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1300 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1301 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1302 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1304 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1305 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1306 IEEE80211_STYPE_ACTION
);
1308 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.delba
));
1310 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1311 mgmt
->u
.action
.u
.delba
.action_code
= WLAN_ACTION_DELBA
;
1312 params
= (u16
)(initiator
<< 11); /* bit 11 initiator */
1313 params
|= (u16
)(tid
<< 12); /* bit 15:12 TID number */
1315 mgmt
->u
.action
.u
.delba
.params
= cpu_to_le16(params
);
1316 mgmt
->u
.action
.u
.delba
.reason_code
= cpu_to_le16(reason_code
);
1318 ieee80211_sta_tx(dev
, skb
, 0);
1321 void ieee80211_sta_stop_rx_ba_session(struct net_device
*dev
, u8
*ra
, u16 tid
,
1322 u16 initiator
, u16 reason
)
1324 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1325 struct ieee80211_hw
*hw
= &local
->hw
;
1326 struct sta_info
*sta
;
1329 sta
= sta_info_get(local
, ra
);
1333 /* check if TID is in operational state */
1334 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1335 if (sta
->ampdu_mlme
.tid_rx
[tid
].state
1336 != HT_AGG_STATE_OPERATIONAL
) {
1337 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1341 sta
->ampdu_mlme
.tid_rx
[tid
].state
=
1342 HT_AGG_STATE_REQ_STOP_BA_MSK
|
1343 (initiator
<< HT_AGG_STATE_INITIATOR_SHIFT
);
1344 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_rx
);
1346 /* stop HW Rx aggregation. ampdu_action existence
1347 * already verified in session init so we add the BUG_ON */
1348 BUG_ON(!local
->ops
->ampdu_action
);
1350 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_STOP
,
1353 printk(KERN_DEBUG
"HW problem - can not stop rx "
1354 "aggergation for tid %d\n", tid
);
1356 /* shutdown timer has not expired */
1357 if (initiator
!= WLAN_BACK_TIMER
)
1358 del_timer_sync(&sta
->ampdu_mlme
.tid_rx
[tid
].
1361 /* check if this is a self generated aggregation halt */
1362 if (initiator
== WLAN_BACK_RECIPIENT
|| initiator
== WLAN_BACK_TIMER
)
1363 ieee80211_send_delba(dev
, ra
, tid
, 0, reason
);
1365 /* free the reordering buffer */
1366 for (i
= 0; i
< sta
->ampdu_mlme
.tid_rx
[tid
].buf_size
; i
++) {
1367 if (sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
[i
]) {
1368 /* release the reordered frames */
1369 dev_kfree_skb(sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
[i
]);
1370 sta
->ampdu_mlme
.tid_rx
[tid
].stored_mpdu_num
--;
1371 sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
[i
] = NULL
;
1374 kfree(sta
->ampdu_mlme
.tid_rx
[tid
].reorder_buf
);
1376 sta
->ampdu_mlme
.tid_rx
[tid
].state
= HT_AGG_STATE_IDLE
;
1381 static void ieee80211_sta_process_delba(struct net_device
*dev
,
1382 struct ieee80211_mgmt
*mgmt
, size_t len
)
1384 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1385 struct sta_info
*sta
;
1388 DECLARE_MAC_BUF(mac
);
1390 sta
= sta_info_get(local
, mgmt
->sa
);
1394 params
= le16_to_cpu(mgmt
->u
.action
.u
.delba
.params
);
1395 tid
= (params
& IEEE80211_DELBA_PARAM_TID_MASK
) >> 12;
1396 initiator
= (params
& IEEE80211_DELBA_PARAM_INITIATOR_MASK
) >> 11;
1398 #ifdef CONFIG_MAC80211_HT_DEBUG
1399 if (net_ratelimit())
1400 printk(KERN_DEBUG
"delba from %s (%s) tid %d reason code %d\n",
1401 print_mac(mac
, mgmt
->sa
),
1402 initiator
? "recipient" : "initiator", tid
,
1403 mgmt
->u
.action
.u
.delba
.reason_code
);
1404 #endif /* CONFIG_MAC80211_HT_DEBUG */
1406 if (initiator
== WLAN_BACK_INITIATOR
)
1407 ieee80211_sta_stop_rx_ba_session(dev
, sta
->addr
, tid
,
1408 WLAN_BACK_INITIATOR
, 0);
1409 else { /* WLAN_BACK_RECIPIENT */
1410 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1411 sta
->ampdu_mlme
.tid_tx
[tid
].state
=
1412 HT_AGG_STATE_OPERATIONAL
;
1413 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1414 ieee80211_stop_tx_ba_session(&local
->hw
, sta
->addr
, tid
,
1415 WLAN_BACK_RECIPIENT
);
1421 * After sending add Block Ack request we activated a timer until
1422 * add Block Ack response will arrive from the recipient.
1423 * If this timer expires sta_addba_resp_timer_expired will be executed.
1425 void sta_addba_resp_timer_expired(unsigned long data
)
1427 /* not an elegant detour, but there is no choice as the timer passes
1428 * only one argument, and both sta_info and TID are needed, so init
1429 * flow in sta_info_add gives the TID as data, while the timer_to_id
1430 * array gives the sta through container_of */
1431 u16 tid
= *(int *)data
;
1432 struct sta_info
*temp_sta
= container_of((void *)data
,
1433 struct sta_info
, timer_to_tid
[tid
]);
1435 struct ieee80211_local
*local
= temp_sta
->local
;
1436 struct ieee80211_hw
*hw
= &local
->hw
;
1437 struct sta_info
*sta
;
1440 sta
= sta_info_get(local
, temp_sta
->addr
);
1444 state
= &sta
->ampdu_mlme
.tid_tx
[tid
].state
;
1445 /* check if the TID waits for addBA response */
1446 spin_lock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1447 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1448 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1449 *state
= HT_AGG_STATE_IDLE
;
1450 printk(KERN_DEBUG
"timer expired on tid %d but we are not "
1451 "expecting addBA response there", tid
);
1452 goto timer_expired_exit
;
1455 printk(KERN_DEBUG
"addBA response timer expired on tid %d\n", tid
);
1457 /* go through the state check in stop_BA_session */
1458 *state
= HT_AGG_STATE_OPERATIONAL
;
1459 spin_unlock_bh(&sta
->ampdu_mlme
.ampdu_tx
);
1460 ieee80211_stop_tx_ba_session(hw
, temp_sta
->addr
, tid
,
1461 WLAN_BACK_INITIATOR
);
1468 * After receiving Block Ack Request (BAR) we activated a
1469 * timer after each frame arrives from the originator.
1470 * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
1472 void sta_rx_agg_session_timer_expired(unsigned long data
)
1474 /* not an elegant detour, but there is no choice as the timer passes
1475 * only one argument, and verious sta_info are needed here, so init
1476 * flow in sta_info_add gives the TID as data, while the timer_to_id
1477 * array gives the sta through container_of */
1478 u8
*ptid
= (u8
*)data
;
1479 u8
*timer_to_id
= ptid
- *ptid
;
1480 struct sta_info
*sta
= container_of(timer_to_id
, struct sta_info
,
1483 printk(KERN_DEBUG
"rx session timer expired on tid %d\n", (u16
)*ptid
);
1484 ieee80211_sta_stop_rx_ba_session(sta
->dev
, sta
->addr
, (u16
)*ptid
,
1486 WLAN_REASON_QSTA_TIMEOUT
);
1490 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1491 struct ieee80211_if_sta
*ifsta
,
1492 struct ieee80211_mgmt
*mgmt
,
1495 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1496 u16 auth_alg
, auth_transaction
, status_code
;
1497 DECLARE_MAC_BUF(mac
);
1499 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1500 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
) {
1501 printk(KERN_DEBUG
"%s: authentication frame received from "
1502 "%s, but not in authenticate state - ignored\n",
1503 dev
->name
, print_mac(mac
, mgmt
->sa
));
1508 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
1509 "received from %s - ignored\n",
1510 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1514 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1515 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1516 printk(KERN_DEBUG
"%s: authentication frame received from "
1517 "unknown AP (SA=%s BSSID=%s) - "
1518 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1519 print_mac(mac
, mgmt
->bssid
));
1523 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1524 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
1525 printk(KERN_DEBUG
"%s: authentication frame received from "
1526 "unknown BSSID (SA=%s BSSID=%s) - "
1527 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1528 print_mac(mac
, mgmt
->bssid
));
1532 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1533 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1534 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1536 printk(KERN_DEBUG
"%s: RX authentication from %s (alg=%d "
1537 "transaction=%d status=%d)\n",
1538 dev
->name
, print_mac(mac
, mgmt
->sa
), auth_alg
,
1539 auth_transaction
, status_code
);
1541 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
1542 /* IEEE 802.11 standard does not require authentication in IBSS
1543 * networks and most implementations do not seem to use it.
1544 * However, try to reply to authentication attempts if someone
1545 * has actually implemented this.
1546 * TODO: Could implement shared key authentication. */
1547 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
1548 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
1549 "frame (alg=%d transaction=%d)\n",
1550 dev
->name
, auth_alg
, auth_transaction
);
1553 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1556 if (auth_alg
!= ifsta
->auth_alg
||
1557 auth_transaction
!= ifsta
->auth_transaction
) {
1558 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1559 "(alg=%d transaction=%d)\n",
1560 dev
->name
, auth_alg
, auth_transaction
);
1564 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1565 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1566 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1567 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1569 const int num_algs
= ARRAY_SIZE(algs
);
1571 algs
[0] = algs
[1] = algs
[2] = 0xff;
1572 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1573 algs
[0] = WLAN_AUTH_OPEN
;
1574 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1575 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1576 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1577 algs
[2] = WLAN_AUTH_LEAP
;
1578 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1580 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1584 for (i
= 0; i
< num_algs
; i
++) {
1586 if (pos
>= num_algs
)
1588 if (algs
[pos
] == ifsta
->auth_alg
||
1591 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1592 !ieee80211_sta_wep_configured(dev
))
1594 ifsta
->auth_alg
= algs
[pos
];
1595 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1597 dev
->name
, ifsta
->auth_alg
);
1604 switch (ifsta
->auth_alg
) {
1605 case WLAN_AUTH_OPEN
:
1606 case WLAN_AUTH_LEAP
:
1607 ieee80211_auth_completed(dev
, ifsta
);
1609 case WLAN_AUTH_SHARED_KEY
:
1610 if (ifsta
->auth_transaction
== 4)
1611 ieee80211_auth_completed(dev
, ifsta
);
1613 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1619 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1620 struct ieee80211_if_sta
*ifsta
,
1621 struct ieee80211_mgmt
*mgmt
,
1625 DECLARE_MAC_BUF(mac
);
1628 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1629 "received from %s - ignored\n",
1630 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1634 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1635 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1636 "unknown AP (SA=%s BSSID=%s) - "
1637 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1638 print_mac(mac
, mgmt
->bssid
));
1642 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1644 printk(KERN_DEBUG
"%s: RX deauthentication from %s"
1646 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1648 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1649 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1652 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1653 ifsta
->state
== IEEE80211_ASSOCIATE
||
1654 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1655 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1656 mod_timer(&ifsta
->timer
, jiffies
+
1657 IEEE80211_RETRY_AUTH_INTERVAL
);
1660 ieee80211_set_disassoc(dev
, ifsta
, 1);
1661 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1665 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1666 struct ieee80211_if_sta
*ifsta
,
1667 struct ieee80211_mgmt
*mgmt
,
1671 DECLARE_MAC_BUF(mac
);
1674 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1675 "received from %s - ignored\n",
1676 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1680 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1681 printk(KERN_DEBUG
"%s: disassociation frame received from "
1682 "unknown AP (SA=%s BSSID=%s) - "
1683 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1684 print_mac(mac
, mgmt
->bssid
));
1688 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1690 printk(KERN_DEBUG
"%s: RX disassociation from %s"
1692 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1694 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1695 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1697 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1698 ifsta
->state
= IEEE80211_ASSOCIATE
;
1699 mod_timer(&ifsta
->timer
, jiffies
+
1700 IEEE80211_RETRY_AUTH_INTERVAL
);
1703 ieee80211_set_disassoc(dev
, ifsta
, 0);
1707 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
1708 struct ieee80211_if_sta
*ifsta
,
1709 struct ieee80211_mgmt
*mgmt
,
1713 struct ieee80211_local
*local
= sdata
->local
;
1714 struct net_device
*dev
= sdata
->dev
;
1715 struct ieee80211_supported_band
*sband
;
1716 struct sta_info
*sta
;
1717 u64 rates
, basic_rates
;
1718 u16 capab_info
, status_code
, aid
;
1719 struct ieee802_11_elems elems
;
1720 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
1723 DECLARE_MAC_BUF(mac
);
1724 bool have_higher_than_11mbit
= false;
1726 /* AssocResp and ReassocResp have identical structure, so process both
1727 * of them in this function. */
1729 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1730 printk(KERN_DEBUG
"%s: association frame received from "
1731 "%s, but not in associate state - ignored\n",
1732 dev
->name
, print_mac(mac
, mgmt
->sa
));
1737 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1738 "received from %s - ignored\n",
1739 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1743 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1744 printk(KERN_DEBUG
"%s: association frame received from "
1745 "unknown AP (SA=%s BSSID=%s) - "
1746 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1747 print_mac(mac
, mgmt
->bssid
));
1751 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1752 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1753 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1755 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
1756 "status=%d aid=%d)\n",
1757 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
1758 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
1760 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1761 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1762 dev
->name
, status_code
);
1763 /* if this was a reassociation, ensure we try a "full"
1764 * association next time. This works around some broken APs
1765 * which do not correctly reject reassociation requests. */
1766 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1770 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1771 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1772 "set\n", dev
->name
, aid
);
1773 aid
&= ~(BIT(15) | BIT(14));
1775 pos
= mgmt
->u
.assoc_resp
.variable
;
1776 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1778 if (!elems
.supp_rates
) {
1779 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1784 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1786 ifsta
->ap_capab
= capab_info
;
1788 kfree(ifsta
->assocresp_ies
);
1789 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1790 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1791 if (ifsta
->assocresp_ies
)
1792 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1794 /* Add STA entry for the AP */
1795 sta
= sta_info_get(local
, ifsta
->bssid
);
1797 struct ieee80211_sta_bss
*bss
;
1798 sta
= sta_info_add(local
, dev
, ifsta
->bssid
, GFP_KERNEL
);
1800 printk(KERN_DEBUG
"%s: failed to add STA entry for the"
1801 " AP (error %ld)\n", dev
->name
, PTR_ERR(sta
));
1804 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
1805 local
->hw
.conf
.channel
->center_freq
,
1806 ifsta
->ssid
, ifsta
->ssid_len
);
1808 sta
->last_rssi
= bss
->rssi
;
1809 sta
->last_signal
= bss
->signal
;
1810 sta
->last_noise
= bss
->noise
;
1811 ieee80211_rx_bss_put(dev
, bss
);
1816 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
|
1817 WLAN_STA_AUTHORIZED
;
1821 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
1823 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1824 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1827 have_higher_than_11mbit
= true;
1829 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
1830 if (sband
->bitrates
[j
].bitrate
== rate
)
1832 if (elems
.supp_rates
[i
] & 0x80)
1833 basic_rates
|= BIT(j
);
1837 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1838 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1841 have_higher_than_11mbit
= true;
1843 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
1844 if (sband
->bitrates
[j
].bitrate
== rate
)
1846 if (elems
.ext_supp_rates
[i
] & 0x80)
1847 basic_rates
|= BIT(j
);
1851 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] = rates
;
1852 sdata
->basic_rates
= basic_rates
;
1854 /* cf. IEEE 802.11 9.2.12 */
1855 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
1856 have_higher_than_11mbit
)
1857 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
1859 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
1861 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&& elems
.wmm_param
&&
1862 local
->ops
->conf_ht
) {
1863 struct ieee80211_ht_bss_info bss_info
;
1865 ieee80211_ht_cap_ie_to_ht_info(
1866 (struct ieee80211_ht_cap
*)
1867 elems
.ht_cap_elem
, &sta
->ht_info
);
1868 ieee80211_ht_addt_info_ie_to_ht_bss_info(
1869 (struct ieee80211_ht_addt_info
*)
1870 elems
.ht_info_elem
, &bss_info
);
1871 ieee80211_hw_config_ht(local
, 1, &sta
->ht_info
, &bss_info
);
1874 rate_control_rate_init(sta
, local
);
1876 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1877 sta
->flags
|= WLAN_STA_WME
;
1878 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1879 elems
.wmm_param_len
);
1882 /* set AID, ieee80211_set_associated() will tell the driver */
1883 bss_conf
->aid
= aid
;
1884 ieee80211_set_associated(dev
, ifsta
, 1);
1888 ieee80211_associated(dev
, ifsta
);
1892 /* Caller must hold local->sta_bss_lock */
1893 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
1894 struct ieee80211_sta_bss
*bss
)
1896 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1899 if (bss_mesh_cfg(bss
))
1900 hash_idx
= mesh_id_hash(bss_mesh_id(bss
),
1901 bss_mesh_id_len(bss
));
1903 hash_idx
= STA_HASH(bss
->bssid
);
1905 bss
->hnext
= local
->sta_bss_hash
[hash_idx
];
1906 local
->sta_bss_hash
[hash_idx
] = bss
;
1910 /* Caller must hold local->sta_bss_lock */
1911 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
1912 struct ieee80211_sta_bss
*bss
)
1914 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1915 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
1916 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1920 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
1923 prev
->hnext
= bss
->hnext
;
1932 static struct ieee80211_sta_bss
*
1933 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int freq
,
1934 u8
*ssid
, u8 ssid_len
)
1936 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1937 struct ieee80211_sta_bss
*bss
;
1939 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
1942 atomic_inc(&bss
->users
);
1943 atomic_inc(&bss
->users
);
1944 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
1946 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
1947 memcpy(bss
->ssid
, ssid
, ssid_len
);
1948 bss
->ssid_len
= ssid_len
;
1951 spin_lock_bh(&local
->sta_bss_lock
);
1952 /* TODO: order by RSSI? */
1953 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
1954 __ieee80211_rx_bss_hash_add(dev
, bss
);
1955 spin_unlock_bh(&local
->sta_bss_lock
);
1959 static struct ieee80211_sta_bss
*
1960 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
1961 u8
*ssid
, u8 ssid_len
)
1963 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1964 struct ieee80211_sta_bss
*bss
;
1966 spin_lock_bh(&local
->sta_bss_lock
);
1967 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
1969 if (!bss_mesh_cfg(bss
) &&
1970 !memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
1971 bss
->freq
== freq
&&
1972 bss
->ssid_len
== ssid_len
&&
1973 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
1974 atomic_inc(&bss
->users
);
1979 spin_unlock_bh(&local
->sta_bss_lock
);
1983 #ifdef CONFIG_MAC80211_MESH
1984 static struct ieee80211_sta_bss
*
1985 ieee80211_rx_mesh_bss_get(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
1986 u8
*mesh_cfg
, int freq
)
1988 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1989 struct ieee80211_sta_bss
*bss
;
1991 spin_lock_bh(&local
->sta_bss_lock
);
1992 bss
= local
->sta_bss_hash
[mesh_id_hash(mesh_id
, mesh_id_len
)];
1994 if (bss_mesh_cfg(bss
) &&
1995 !memcmp(bss_mesh_cfg(bss
), mesh_cfg
, MESH_CFG_CMP_LEN
) &&
1996 bss
->freq
== freq
&&
1997 mesh_id_len
== bss
->mesh_id_len
&&
1998 (mesh_id_len
== 0 || !memcmp(bss
->mesh_id
, mesh_id
,
2000 atomic_inc(&bss
->users
);
2005 spin_unlock_bh(&local
->sta_bss_lock
);
2009 static struct ieee80211_sta_bss
*
2010 ieee80211_rx_mesh_bss_add(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2011 u8
*mesh_cfg
, int freq
)
2013 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2014 struct ieee80211_sta_bss
*bss
;
2016 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2020 bss
->mesh_cfg
= kmalloc(MESH_CFG_CMP_LEN
, GFP_ATOMIC
);
2021 if (!bss
->mesh_cfg
) {
2026 if (mesh_id_len
&& mesh_id_len
<= IEEE80211_MAX_MESH_ID_LEN
) {
2027 bss
->mesh_id
= kmalloc(mesh_id_len
, GFP_ATOMIC
);
2028 if (!bss
->mesh_id
) {
2029 kfree(bss
->mesh_cfg
);
2033 memcpy(bss
->mesh_id
, mesh_id
, mesh_id_len
);
2036 atomic_inc(&bss
->users
);
2037 atomic_inc(&bss
->users
);
2038 memcpy(bss
->mesh_cfg
, mesh_cfg
, MESH_CFG_CMP_LEN
);
2039 bss
->mesh_id_len
= mesh_id_len
;
2041 spin_lock_bh(&local
->sta_bss_lock
);
2042 /* TODO: order by RSSI? */
2043 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2044 __ieee80211_rx_bss_hash_add(dev
, bss
);
2045 spin_unlock_bh(&local
->sta_bss_lock
);
2050 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
2056 kfree(bss_mesh_id(bss
));
2057 kfree(bss_mesh_cfg(bss
));
2062 static void ieee80211_rx_bss_put(struct net_device
*dev
,
2063 struct ieee80211_sta_bss
*bss
)
2065 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2066 if (!atomic_dec_and_test(&bss
->users
))
2069 spin_lock_bh(&local
->sta_bss_lock
);
2070 __ieee80211_rx_bss_hash_del(dev
, bss
);
2071 list_del(&bss
->list
);
2072 spin_unlock_bh(&local
->sta_bss_lock
);
2073 ieee80211_rx_bss_free(bss
);
2077 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
2079 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2080 spin_lock_init(&local
->sta_bss_lock
);
2081 INIT_LIST_HEAD(&local
->sta_bss_list
);
2085 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
2087 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2088 struct ieee80211_sta_bss
*bss
, *tmp
;
2090 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
2091 ieee80211_rx_bss_put(dev
, bss
);
2095 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2096 struct ieee80211_if_sta
*ifsta
,
2097 struct ieee80211_sta_bss
*bss
)
2099 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2100 int res
, rates
, i
, j
;
2101 struct sk_buff
*skb
;
2102 struct ieee80211_mgmt
*mgmt
;
2103 struct ieee80211_tx_control control
;
2104 struct rate_selection ratesel
;
2106 struct ieee80211_sub_if_data
*sdata
;
2107 struct ieee80211_supported_band
*sband
;
2109 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2111 /* Remove possible STA entries from other IBSS networks. */
2112 sta_info_flush(local
, NULL
);
2114 if (local
->ops
->reset_tsf
) {
2115 /* Reset own TSF to allow time synchronization work. */
2116 local
->ops
->reset_tsf(local_to_hw(local
));
2118 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2119 res
= ieee80211_if_config(dev
);
2123 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2125 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2126 sdata
->drop_unencrypted
= bss
->capability
&
2127 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2129 res
= ieee80211_set_freq(local
, bss
->freq
);
2131 if (local
->oper_channel
->flags
& IEEE80211_CHAN_NO_IBSS
) {
2132 printk(KERN_DEBUG
"%s: IBSS not allowed on frequency "
2133 "%d MHz\n", dev
->name
, local
->oper_channel
->center_freq
);
2137 /* Set beacon template */
2138 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2143 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2145 mgmt
= (struct ieee80211_mgmt
*)
2146 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2147 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2148 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2149 IEEE80211_STYPE_BEACON
);
2150 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2151 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2152 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2153 mgmt
->u
.beacon
.beacon_int
=
2154 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2155 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2157 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2158 *pos
++ = WLAN_EID_SSID
;
2159 *pos
++ = ifsta
->ssid_len
;
2160 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2162 rates
= bss
->supp_rates_len
;
2165 pos
= skb_put(skb
, 2 + rates
);
2166 *pos
++ = WLAN_EID_SUPP_RATES
;
2168 memcpy(pos
, bss
->supp_rates
, rates
);
2170 if (bss
->band
== IEEE80211_BAND_2GHZ
) {
2171 pos
= skb_put(skb
, 2 + 1);
2172 *pos
++ = WLAN_EID_DS_PARAMS
;
2174 *pos
++ = ieee80211_frequency_to_channel(bss
->freq
);
2177 pos
= skb_put(skb
, 2 + 2);
2178 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2180 /* FIX: set ATIM window based on scan results */
2184 if (bss
->supp_rates_len
> 8) {
2185 rates
= bss
->supp_rates_len
- 8;
2186 pos
= skb_put(skb
, 2 + rates
);
2187 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2189 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2192 memset(&control
, 0, sizeof(control
));
2193 rate_control_get_rate(dev
, sband
, skb
, &ratesel
);
2194 if (!ratesel
.rate
) {
2195 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2196 "for IBSS beacon\n", dev
->name
);
2199 control
.vif
= &sdata
->vif
;
2200 control
.tx_rate
= ratesel
.rate
;
2201 if (sdata
->bss_conf
.use_short_preamble
&&
2202 ratesel
.rate
->flags
& IEEE80211_RATE_SHORT_PREAMBLE
)
2203 control
.flags
|= IEEE80211_TXCTL_SHORT_PREAMBLE
;
2204 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
2205 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
2206 control
.retry_limit
= 1;
2208 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
2209 if (ifsta
->probe_resp
) {
2210 mgmt
= (struct ieee80211_mgmt
*)
2211 ifsta
->probe_resp
->data
;
2212 mgmt
->frame_control
=
2213 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2214 IEEE80211_STYPE_PROBE_RESP
);
2216 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
2217 "template for IBSS\n", dev
->name
);
2220 if (local
->ops
->beacon_update
&&
2221 local
->ops
->beacon_update(local_to_hw(local
),
2222 skb
, &control
) == 0) {
2223 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
2224 "template\n", dev
->name
);
2229 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2230 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2231 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2232 for (j
= 0; j
< sband
->n_bitrates
; j
++)
2233 if (sband
->bitrates
[j
].bitrate
== bitrate
)
2236 ifsta
->supp_rates_bits
[local
->hw
.conf
.channel
->band
] = rates
;
2240 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
2241 "template\n", dev
->name
);
2245 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2246 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2248 ieee80211_rx_bss_put(dev
, bss
);
2253 u64
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
2254 struct ieee802_11_elems
*elems
,
2255 enum ieee80211_band band
)
2257 struct ieee80211_supported_band
*sband
;
2258 struct ieee80211_rate
*bitrates
;
2262 sband
= local
->hw
.wiphy
->bands
[band
];
2266 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2269 bitrates
= sband
->bitrates
;
2270 num_rates
= sband
->n_bitrates
;
2272 for (i
= 0; i
< elems
->supp_rates_len
+
2273 elems
->ext_supp_rates_len
; i
++) {
2276 if (i
< elems
->supp_rates_len
)
2277 rate
= elems
->supp_rates
[i
];
2278 else if (elems
->ext_supp_rates
)
2279 rate
= elems
->ext_supp_rates
2280 [i
- elems
->supp_rates_len
];
2281 own_rate
= 5 * (rate
& 0x7f);
2282 for (j
= 0; j
< num_rates
; j
++)
2283 if (bitrates
[j
].bitrate
== own_rate
)
2284 supp_rates
|= BIT(j
);
2290 static void ieee80211_rx_bss_info(struct net_device
*dev
,
2291 struct ieee80211_mgmt
*mgmt
,
2293 struct ieee80211_rx_status
*rx_status
,
2296 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2297 struct ieee802_11_elems elems
;
2300 struct ieee80211_sta_bss
*bss
;
2301 struct sta_info
*sta
;
2302 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2303 u64 beacon_timestamp
, rx_timestamp
;
2304 DECLARE_MAC_BUF(mac
);
2305 DECLARE_MAC_BUF(mac2
);
2307 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
2308 return; /* ignore ProbeResp to foreign address */
2311 printk(KERN_DEBUG
"%s: RX %s from %s to %s\n",
2312 dev
->name
, beacon
? "Beacon" : "Probe Response",
2313 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
));
2316 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2320 beacon_timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
2321 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2323 if (ieee80211_vif_is_mesh(&sdata
->vif
) && elems
.mesh_id
&&
2324 elems
.mesh_config
&& mesh_matches_local(&elems
, dev
)) {
2325 u64 rates
= ieee80211_sta_get_rates(local
, &elems
,
2328 mesh_neighbour_update(mgmt
->sa
, rates
, dev
,
2329 mesh_peer_accepts_plinks(&elems
, dev
));
2332 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
2333 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
2334 (sta
= sta_info_get(local
, mgmt
->sa
))) {
2336 u64 supp_rates
= ieee80211_sta_get_rates(local
, &elems
,
2339 prev_rates
= sta
->supp_rates
[rx_status
->band
];
2340 sta
->supp_rates
[rx_status
->band
] &= supp_rates
;
2341 if (sta
->supp_rates
[rx_status
->band
] == 0) {
2342 /* No matching rates - this should not really happen.
2343 * Make sure that at least one rate is marked
2344 * supported to avoid issues with TX rate ctrl. */
2345 sta
->supp_rates
[rx_status
->band
] =
2346 sdata
->u
.sta
.supp_rates_bits
[rx_status
->band
];
2348 if (sta
->supp_rates
[rx_status
->band
] != prev_rates
) {
2349 printk(KERN_DEBUG
"%s: updated supp_rates set for "
2350 "%s based on beacon info (0x%llx & 0x%llx -> "
2352 dev
->name
, print_mac(mac
, sta
->addr
),
2353 (unsigned long long) prev_rates
,
2354 (unsigned long long) supp_rates
,
2355 (unsigned long long) sta
->supp_rates
[rx_status
->band
]);
2360 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
2361 freq
= ieee80211_channel_to_frequency(elems
.ds_params
[0]);
2363 freq
= rx_status
->freq
;
2365 #ifdef CONFIG_MAC80211_MESH
2366 if (elems
.mesh_config
)
2367 bss
= ieee80211_rx_mesh_bss_get(dev
, elems
.mesh_id
,
2368 elems
.mesh_id_len
, elems
.mesh_config
, freq
);
2371 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, freq
,
2372 elems
.ssid
, elems
.ssid_len
);
2374 #ifdef CONFIG_MAC80211_MESH
2375 if (elems
.mesh_config
)
2376 bss
= ieee80211_rx_mesh_bss_add(dev
, elems
.mesh_id
,
2377 elems
.mesh_id_len
, elems
.mesh_config
, freq
);
2380 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, freq
,
2381 elems
.ssid
, elems
.ssid_len
);
2386 /* TODO: order by RSSI? */
2387 spin_lock_bh(&local
->sta_bss_lock
);
2388 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
2389 spin_unlock_bh(&local
->sta_bss_lock
);
2393 bss
->band
= rx_status
->band
;
2395 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
2396 bss
->probe_resp
&& beacon
) {
2398 * Do not allow beacon to override data from Probe Response. */
2399 ieee80211_rx_bss_put(dev
, bss
);
2403 /* save the ERP value so that it is available at association time */
2404 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
2405 bss
->erp_value
= elems
.erp_info
[0];
2406 bss
->has_erp_value
= 1;
2409 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
2410 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2412 bss
->supp_rates_len
= 0;
2413 if (elems
.supp_rates
) {
2414 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2415 if (clen
> elems
.supp_rates_len
)
2416 clen
= elems
.supp_rates_len
;
2417 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
2419 bss
->supp_rates_len
+= clen
;
2421 if (elems
.ext_supp_rates
) {
2422 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2423 if (clen
> elems
.ext_supp_rates_len
)
2424 clen
= elems
.ext_supp_rates_len
;
2425 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
2426 elems
.ext_supp_rates
, clen
);
2427 bss
->supp_rates_len
+= clen
;
2431 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
2432 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
2434 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
2436 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
2437 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
2439 bss
->wpa_ie_len
= 0;
2440 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
2443 bss
->wpa_ie_len
= 0;
2447 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
2448 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
2450 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
2452 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
2453 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
2455 bss
->rsn_ie_len
= 0;
2456 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
2459 bss
->rsn_ie_len
= 0;
2462 if (elems
.wmm_param
&&
2463 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
2464 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
2466 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
2468 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
2469 elems
.wmm_param_len
+ 2);
2470 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
2472 bss
->wmm_ie_len
= 0;
2473 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
2476 bss
->wmm_ie_len
= 0;
2478 if (elems
.ht_cap_elem
&&
2479 (!bss
->ht_ie
|| bss
->ht_ie_len
!= elems
.ht_cap_elem_len
||
2480 memcmp(bss
->ht_ie
, elems
.ht_cap_elem
, elems
.ht_cap_elem_len
))) {
2482 bss
->ht_ie
= kmalloc(elems
.ht_cap_elem_len
+ 2, GFP_ATOMIC
);
2484 memcpy(bss
->ht_ie
, elems
.ht_cap_elem
- 2,
2485 elems
.ht_cap_elem_len
+ 2);
2486 bss
->ht_ie_len
= elems
.ht_cap_elem_len
+ 2;
2489 } else if (!elems
.ht_cap_elem
&& bss
->ht_ie
) {
2495 bss
->timestamp
= beacon_timestamp
;
2496 bss
->last_update
= jiffies
;
2497 bss
->rssi
= rx_status
->ssi
;
2498 bss
->signal
= rx_status
->signal
;
2499 bss
->noise
= rx_status
->noise
;
2503 /* check if we need to merge IBSS */
2504 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
2505 !local
->sta_sw_scanning
&& !local
->sta_hw_scanning
&&
2506 bss
->capability
& WLAN_CAPABILITY_IBSS
&&
2507 bss
->freq
== local
->oper_channel
->center_freq
&&
2508 elems
.ssid_len
== sdata
->u
.sta
.ssid_len
&&
2509 memcmp(elems
.ssid
, sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
) == 0) {
2510 if (rx_status
->flag
& RX_FLAG_TSFT
) {
2511 /* in order for correct IBSS merging we need mactime
2513 * since mactime is defined as the time the first data
2514 * symbol of the frame hits the PHY, and the timestamp
2515 * of the beacon is defined as "the time that the data
2516 * symbol containing the first bit of the timestamp is
2517 * transmitted to the PHY plus the transmitting STA’s
2518 * delays through its local PHY from the MAC-PHY
2519 * interface to its interface with the WM"
2520 * (802.11 11.1.2) - equals the time this bit arrives at
2521 * the receiver - we have to take into account the
2522 * offset between the two.
2523 * e.g: at 1 MBit that means mactime is 192 usec earlier
2524 * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
2526 int rate
= local
->hw
.wiphy
->bands
[rx_status
->band
]->
2527 bitrates
[rx_status
->rate_idx
].bitrate
;
2528 rx_timestamp
= rx_status
->mactime
+ (24 * 8 * 10 / rate
);
2529 } else if (local
&& local
->ops
&& local
->ops
->get_tsf
)
2530 /* second best option: get current TSF */
2531 rx_timestamp
= local
->ops
->get_tsf(local_to_hw(local
));
2533 /* can't merge without knowing the TSF */
2534 rx_timestamp
= -1LLU;
2535 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2536 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
2537 "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
2538 print_mac(mac
, mgmt
->sa
),
2539 print_mac(mac2
, mgmt
->bssid
),
2540 (unsigned long long)rx_timestamp
,
2541 (unsigned long long)beacon_timestamp
,
2542 (unsigned long long)(rx_timestamp
- beacon_timestamp
),
2544 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2545 if (beacon_timestamp
> rx_timestamp
) {
2546 #ifndef CONFIG_MAC80211_IBSS_DEBUG
2547 if (net_ratelimit())
2549 printk(KERN_DEBUG
"%s: beacon TSF higher than "
2550 "local TSF - IBSS merge with BSSID %s\n",
2551 dev
->name
, print_mac(mac
, mgmt
->bssid
));
2552 ieee80211_sta_join_ibss(dev
, &sdata
->u
.sta
, bss
);
2553 ieee80211_ibss_add_sta(dev
, NULL
,
2554 mgmt
->bssid
, mgmt
->sa
);
2558 ieee80211_rx_bss_put(dev
, bss
);
2562 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
2563 struct ieee80211_mgmt
*mgmt
,
2565 struct ieee80211_rx_status
*rx_status
)
2567 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
2571 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
2572 struct ieee80211_mgmt
*mgmt
,
2574 struct ieee80211_rx_status
*rx_status
)
2576 struct ieee80211_sub_if_data
*sdata
;
2577 struct ieee80211_if_sta
*ifsta
;
2579 struct ieee802_11_elems elems
;
2580 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2581 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
2584 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
2586 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2587 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2589 ifsta
= &sdata
->u
.sta
;
2591 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
2592 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
2595 /* Process beacon from the current BSS */
2596 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2600 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2602 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
2603 changed
|= ieee80211_handle_erp_ie(sdata
, elems
.erp_info
[0]);
2605 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&&
2606 elems
.wmm_param
&& local
->ops
->conf_ht
&&
2607 conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
2608 struct ieee80211_ht_bss_info bss_info
;
2610 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2611 (struct ieee80211_ht_addt_info
*)
2612 elems
.ht_info_elem
, &bss_info
);
2613 /* check if AP changed bss inforamation */
2614 if ((conf
->ht_bss_conf
.primary_channel
!=
2615 bss_info
.primary_channel
) ||
2616 (conf
->ht_bss_conf
.bss_cap
!= bss_info
.bss_cap
) ||
2617 (conf
->ht_bss_conf
.bss_op_mode
!= bss_info
.bss_op_mode
))
2618 ieee80211_hw_config_ht(local
, 1, &conf
->ht_conf
,
2622 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2623 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2624 elems
.wmm_param_len
);
2627 ieee80211_bss_info_change_notify(sdata
, changed
);
2631 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
2632 struct ieee80211_if_sta
*ifsta
,
2633 struct ieee80211_mgmt
*mgmt
,
2635 struct ieee80211_rx_status
*rx_status
)
2637 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2638 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2640 struct sk_buff
*skb
;
2641 struct ieee80211_mgmt
*resp
;
2643 DECLARE_MAC_BUF(mac
);
2644 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2645 DECLARE_MAC_BUF(mac2
);
2646 DECLARE_MAC_BUF(mac3
);
2649 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
||
2650 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
2651 len
< 24 + 2 || !ifsta
->probe_resp
)
2654 if (local
->ops
->tx_last_beacon
)
2655 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
2659 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2660 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
2661 "%s (tx_last_beacon=%d)\n",
2662 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
2663 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
2664 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2666 if (!tx_last_beacon
)
2669 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
2670 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
2673 end
= ((u8
*) mgmt
) + len
;
2674 pos
= mgmt
->u
.probe_req
.variable
;
2675 if (pos
[0] != WLAN_EID_SSID
||
2676 pos
+ 2 + pos
[1] > end
) {
2677 if (net_ratelimit()) {
2678 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
2680 dev
->name
, print_mac(mac
, mgmt
->sa
));
2685 (pos
[1] != ifsta
->ssid_len
||
2686 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
2687 /* Ignore ProbeReq for foreign SSID */
2691 /* Reply with ProbeResp */
2692 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
2696 resp
= (struct ieee80211_mgmt
*) skb
->data
;
2697 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
2698 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2699 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
2700 dev
->name
, print_mac(mac
, resp
->da
));
2701 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2702 ieee80211_sta_tx(dev
, skb
, 0);
2705 static void ieee80211_rx_mgmt_action(struct net_device
*dev
,
2706 struct ieee80211_if_sta
*ifsta
,
2707 struct ieee80211_mgmt
*mgmt
,
2709 struct ieee80211_rx_status
*rx_status
)
2711 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2713 if (len
< IEEE80211_MIN_ACTION_SIZE
)
2716 switch (mgmt
->u
.action
.category
) {
2717 case WLAN_CATEGORY_BACK
:
2718 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
2719 case WLAN_ACTION_ADDBA_REQ
:
2720 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2721 sizeof(mgmt
->u
.action
.u
.addba_req
)))
2723 ieee80211_sta_process_addba_request(dev
, mgmt
, len
);
2725 case WLAN_ACTION_ADDBA_RESP
:
2726 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2727 sizeof(mgmt
->u
.action
.u
.addba_resp
)))
2729 ieee80211_sta_process_addba_resp(dev
, mgmt
, len
);
2731 case WLAN_ACTION_DELBA
:
2732 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2733 sizeof(mgmt
->u
.action
.u
.delba
)))
2735 ieee80211_sta_process_delba(dev
, mgmt
, len
);
2738 if (net_ratelimit())
2739 printk(KERN_DEBUG
"%s: Rx unknown A-MPDU action\n",
2744 case PLINK_CATEGORY
:
2745 if (ieee80211_vif_is_mesh(&sdata
->vif
))
2746 mesh_rx_plink_frame(dev
, mgmt
, len
, rx_status
);
2748 case MESH_PATH_SEL_CATEGORY
:
2749 if (ieee80211_vif_is_mesh(&sdata
->vif
))
2750 mesh_rx_path_sel_frame(dev
, mgmt
, len
);
2753 if (net_ratelimit())
2754 printk(KERN_DEBUG
"%s: Rx unknown action frame - "
2755 "category=%d\n", dev
->name
, mgmt
->u
.action
.category
);
2760 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
2761 struct ieee80211_rx_status
*rx_status
)
2763 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2764 struct ieee80211_sub_if_data
*sdata
;
2765 struct ieee80211_if_sta
*ifsta
;
2766 struct ieee80211_mgmt
*mgmt
;
2772 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2773 ifsta
= &sdata
->u
.sta
;
2775 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2776 fc
= le16_to_cpu(mgmt
->frame_control
);
2778 switch (fc
& IEEE80211_FCTL_STYPE
) {
2779 case IEEE80211_STYPE_PROBE_REQ
:
2780 case IEEE80211_STYPE_PROBE_RESP
:
2781 case IEEE80211_STYPE_BEACON
:
2782 case IEEE80211_STYPE_ACTION
:
2783 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
2784 case IEEE80211_STYPE_AUTH
:
2785 case IEEE80211_STYPE_ASSOC_RESP
:
2786 case IEEE80211_STYPE_REASSOC_RESP
:
2787 case IEEE80211_STYPE_DEAUTH
:
2788 case IEEE80211_STYPE_DISASSOC
:
2789 skb_queue_tail(&ifsta
->skb_queue
, skb
);
2790 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2793 printk(KERN_DEBUG
"%s: received unknown management frame - "
2794 "stype=%d\n", dev
->name
,
2795 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
2804 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
2805 struct sk_buff
*skb
)
2807 struct ieee80211_rx_status
*rx_status
;
2808 struct ieee80211_sub_if_data
*sdata
;
2809 struct ieee80211_if_sta
*ifsta
;
2810 struct ieee80211_mgmt
*mgmt
;
2813 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2814 ifsta
= &sdata
->u
.sta
;
2816 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
2817 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2818 fc
= le16_to_cpu(mgmt
->frame_control
);
2820 switch (fc
& IEEE80211_FCTL_STYPE
) {
2821 case IEEE80211_STYPE_PROBE_REQ
:
2822 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
2825 case IEEE80211_STYPE_PROBE_RESP
:
2826 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
2828 case IEEE80211_STYPE_BEACON
:
2829 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
2831 case IEEE80211_STYPE_AUTH
:
2832 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
2834 case IEEE80211_STYPE_ASSOC_RESP
:
2835 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 0);
2837 case IEEE80211_STYPE_REASSOC_RESP
:
2838 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 1);
2840 case IEEE80211_STYPE_DEAUTH
:
2841 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
2843 case IEEE80211_STYPE_DISASSOC
:
2844 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
2846 case IEEE80211_STYPE_ACTION
:
2847 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
, rx_status
);
2856 ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
2857 struct ieee80211_rx_status
*rx_status
)
2859 struct ieee80211_mgmt
*mgmt
;
2863 return RX_DROP_UNUSABLE
;
2865 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2866 fc
= le16_to_cpu(mgmt
->frame_control
);
2868 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_CTL
)
2872 return RX_DROP_MONITOR
;
2874 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2875 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
2876 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
2877 skb
->len
, rx_status
);
2880 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
2881 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
2891 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
2893 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2895 struct sta_info
*sta
;
2897 read_lock_bh(&local
->sta_lock
);
2898 list_for_each_entry(sta
, &local
->sta_list
, list
) {
2899 if (sta
->dev
== dev
&&
2900 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
2906 read_unlock_bh(&local
->sta_lock
);
2912 static void ieee80211_sta_expire(struct net_device
*dev
, unsigned long exp_time
)
2914 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2915 struct sta_info
*sta
, *tmp
;
2916 LIST_HEAD(tmp_list
);
2917 DECLARE_MAC_BUF(mac
);
2919 write_lock_bh(&local
->sta_lock
);
2920 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
2921 if (time_after(jiffies
, sta
->last_rx
+ exp_time
)) {
2922 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
2923 dev
->name
, print_mac(mac
, sta
->addr
));
2924 __sta_info_get(sta
);
2925 sta_info_remove(sta
);
2926 list_add(&sta
->list
, &tmp_list
);
2928 write_unlock_bh(&local
->sta_lock
);
2930 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
) {
2937 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
2938 struct ieee80211_if_sta
*ifsta
)
2940 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2942 ieee80211_sta_expire(dev
, IEEE80211_IBSS_INACTIVITY_LIMIT
);
2943 if (ieee80211_sta_active_ibss(dev
))
2946 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
2947 "IBSS networks with same SSID (merge)\n", dev
->name
);
2948 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
2952 #ifdef CONFIG_MAC80211_MESH
2953 static void ieee80211_mesh_housekeeping(struct net_device
*dev
,
2954 struct ieee80211_if_sta
*ifsta
)
2956 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2959 ieee80211_sta_expire(dev
, IEEE80211_MESH_PEER_INACTIVITY_LIMIT
);
2960 mesh_path_expire(dev
);
2962 free_plinks
= mesh_plink_availables(sdata
);
2963 if (free_plinks
!= sdata
->u
.sta
.accepting_plinks
)
2964 ieee80211_if_config_beacon(dev
);
2966 mod_timer(&ifsta
->timer
, jiffies
+
2967 IEEE80211_MESH_HOUSEKEEPING_INTERVAL
);
2971 void ieee80211_start_mesh(struct net_device
*dev
)
2973 struct ieee80211_if_sta
*ifsta
;
2974 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2975 ifsta
= &sdata
->u
.sta
;
2976 ifsta
->state
= IEEE80211_MESH_UP
;
2977 ieee80211_sta_timer((unsigned long)sdata
);
2982 void ieee80211_sta_timer(unsigned long data
)
2984 struct ieee80211_sub_if_data
*sdata
=
2985 (struct ieee80211_sub_if_data
*) data
;
2986 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2987 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
2989 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2990 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2993 void ieee80211_sta_work(struct work_struct
*work
)
2995 struct ieee80211_sub_if_data
*sdata
=
2996 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
2997 struct net_device
*dev
= sdata
->dev
;
2998 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2999 struct ieee80211_if_sta
*ifsta
;
3000 struct sk_buff
*skb
;
3002 if (!netif_running(dev
))
3005 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
3008 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
3009 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
3010 sdata
->vif
.type
!= IEEE80211_IF_TYPE_MESH_POINT
) {
3011 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
3012 "(type=%d)\n", dev
->name
, sdata
->vif
.type
);
3015 ifsta
= &sdata
->u
.sta
;
3017 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
3018 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
3020 #ifdef CONFIG_MAC80211_MESH
3021 if (ifsta
->preq_queue_len
&&
3023 ifsta
->last_preq
+ msecs_to_jiffies(ifsta
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
3024 mesh_path_start_discovery(dev
);
3027 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
3028 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
3029 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
3030 if (ifsta
->scan_ssid_len
)
3031 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
3033 ieee80211_sta_start_scan(dev
, NULL
, 0);
3037 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
3038 if (ieee80211_sta_config_auth(dev
, ifsta
))
3040 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3041 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
3044 switch (ifsta
->state
) {
3045 case IEEE80211_DISABLED
:
3047 case IEEE80211_AUTHENTICATE
:
3048 ieee80211_authenticate(dev
, ifsta
);
3050 case IEEE80211_ASSOCIATE
:
3051 ieee80211_associate(dev
, ifsta
);
3053 case IEEE80211_ASSOCIATED
:
3054 ieee80211_associated(dev
, ifsta
);
3056 case IEEE80211_IBSS_SEARCH
:
3057 ieee80211_sta_find_ibss(dev
, ifsta
);
3059 case IEEE80211_IBSS_JOINED
:
3060 ieee80211_sta_merge_ibss(dev
, ifsta
);
3062 #ifdef CONFIG_MAC80211_MESH
3063 case IEEE80211_MESH_UP
:
3064 ieee80211_mesh_housekeeping(dev
, ifsta
);
3068 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
3073 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
3074 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
3075 "mixed-cell disabled - disassociate\n", dev
->name
);
3077 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
3078 ieee80211_set_disassoc(dev
, ifsta
, 0);
3083 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
3084 struct ieee80211_if_sta
*ifsta
)
3086 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3088 if (local
->ops
->reset_tsf
) {
3089 /* Reset own TSF to allow time synchronization work. */
3090 local
->ops
->reset_tsf(local_to_hw(local
));
3093 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
3096 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
3097 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3098 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
3099 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
3100 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
3101 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
3103 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3104 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
3106 ifsta
->auth_transaction
= -1;
3107 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
3108 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
3109 netif_carrier_off(dev
);
3113 void ieee80211_sta_req_auth(struct net_device
*dev
,
3114 struct ieee80211_if_sta
*ifsta
)
3116 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3117 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3119 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3122 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
3123 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
3124 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
3125 IEEE80211_STA_AUTO_SSID_SEL
))) {
3126 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3127 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3131 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
3132 const char *ssid
, int ssid_len
)
3134 int tmp
, hidden_ssid
;
3136 if (ssid_len
== ifsta
->ssid_len
&&
3137 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
3140 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
3146 if (ssid
[tmp
] != '\0') {
3152 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
3155 if (ssid_len
== 1 && ssid
[0] == ' ')
3161 static int ieee80211_sta_config_auth(struct net_device
*dev
,
3162 struct ieee80211_if_sta
*ifsta
)
3164 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3165 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3166 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
3167 int top_rssi
= 0, freq
;
3169 if (!(ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
3170 IEEE80211_STA_AUTO_BSSID_SEL
| IEEE80211_STA_AUTO_CHANNEL_SEL
))) {
3171 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3172 ieee80211_sta_reset_auth(dev
, ifsta
);
3176 spin_lock_bh(&local
->sta_bss_lock
);
3177 freq
= local
->oper_channel
->center_freq
;
3178 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3179 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
3182 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
3183 !!sdata
->default_key
)
3186 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
3190 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
3191 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
3194 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
3195 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
3198 if (!selected
|| top_rssi
< bss
->rssi
) {
3200 top_rssi
= bss
->rssi
;
3204 atomic_inc(&selected
->users
);
3205 spin_unlock_bh(&local
->sta_bss_lock
);
3208 ieee80211_set_freq(local
, selected
->freq
);
3209 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
3210 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
3211 selected
->ssid_len
);
3212 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
3213 ieee80211_rx_bss_put(dev
, selected
);
3214 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3215 ieee80211_sta_reset_auth(dev
, ifsta
);
3218 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
3219 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
3220 ieee80211_sta_start_scan(dev
, NULL
, 0);
3222 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
3224 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3225 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3227 ifsta
->state
= IEEE80211_DISABLED
;
3233 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
3234 struct ieee80211_if_sta
*ifsta
)
3236 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3237 struct ieee80211_sta_bss
*bss
;
3238 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3239 struct ieee80211_supported_band
*sband
;
3240 u8 bssid
[ETH_ALEN
], *pos
;
3242 DECLARE_MAC_BUF(mac
);
3245 /* Easier testing, use fixed BSSID. */
3246 memset(bssid
, 0xfe, ETH_ALEN
);
3248 /* Generate random, not broadcast, locally administered BSSID. Mix in
3249 * own MAC address to make sure that devices that do not have proper
3250 * random number generator get different BSSID. */
3251 get_random_bytes(bssid
, ETH_ALEN
);
3252 for (i
= 0; i
< ETH_ALEN
; i
++)
3253 bssid
[i
] ^= dev
->dev_addr
[i
];
3258 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
3259 dev
->name
, print_mac(mac
, bssid
));
3261 bss
= ieee80211_rx_bss_add(dev
, bssid
,
3262 local
->hw
.conf
.channel
->center_freq
,
3263 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
3267 bss
->band
= local
->hw
.conf
.channel
->band
;
3268 sband
= local
->hw
.wiphy
->bands
[bss
->band
];
3270 if (local
->hw
.conf
.beacon_int
== 0)
3271 local
->hw
.conf
.beacon_int
= 10000;
3272 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
3273 bss
->last_update
= jiffies
;
3274 bss
->capability
= WLAN_CAPABILITY_IBSS
;
3275 if (sdata
->default_key
) {
3276 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
3278 sdata
->drop_unencrypted
= 0;
3279 bss
->supp_rates_len
= sband
->n_bitrates
;
3280 pos
= bss
->supp_rates
;
3281 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
3282 int rate
= sband
->bitrates
[i
].bitrate
;
3283 *pos
++ = (u8
) (rate
/ 5);
3286 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3290 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
3291 struct ieee80211_if_sta
*ifsta
)
3293 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3294 struct ieee80211_sta_bss
*bss
;
3298 DECLARE_MAC_BUF(mac
);
3299 DECLARE_MAC_BUF(mac2
);
3301 if (ifsta
->ssid_len
== 0)
3304 active_ibss
= ieee80211_sta_active_ibss(dev
);
3305 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3306 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
3307 dev
->name
, active_ibss
);
3308 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3309 spin_lock_bh(&local
->sta_bss_lock
);
3310 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3311 if (ifsta
->ssid_len
!= bss
->ssid_len
||
3312 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
3313 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
3315 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3316 printk(KERN_DEBUG
" bssid=%s found\n",
3317 print_mac(mac
, bss
->bssid
));
3318 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3319 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
3321 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
3324 spin_unlock_bh(&local
->sta_bss_lock
);
3326 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3327 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
3328 "%s\n", print_mac(mac
, bssid
), print_mac(mac2
, ifsta
->bssid
));
3329 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3330 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
3331 (bss
= ieee80211_rx_bss_get(dev
, bssid
,
3332 local
->hw
.conf
.channel
->center_freq
,
3333 ifsta
->ssid
, ifsta
->ssid_len
))) {
3334 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
3335 " based on configured SSID\n",
3336 dev
->name
, print_mac(mac
, bssid
));
3337 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3339 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3340 printk(KERN_DEBUG
" did not try to join ibss\n");
3341 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3343 /* Selected IBSS not found in current scan results - try to scan */
3344 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3345 !ieee80211_sta_active_ibss(dev
)) {
3346 mod_timer(&ifsta
->timer
, jiffies
+
3347 IEEE80211_IBSS_MERGE_INTERVAL
);
3348 } else if (time_after(jiffies
, local
->last_scan_completed
+
3349 IEEE80211_SCAN_INTERVAL
)) {
3350 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
3351 "join\n", dev
->name
);
3352 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
3354 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
3355 int interval
= IEEE80211_SCAN_INTERVAL
;
3357 if (time_after(jiffies
, ifsta
->ibss_join_req
+
3358 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
3359 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
3360 (!(local
->oper_channel
->flags
&
3361 IEEE80211_CHAN_NO_IBSS
)))
3362 return ieee80211_sta_create_ibss(dev
, ifsta
);
3363 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
3364 printk(KERN_DEBUG
"%s: IBSS not allowed on"
3365 " %d MHz\n", dev
->name
,
3366 local
->hw
.conf
.channel
->center_freq
);
3369 /* No IBSS found - decrease scan interval and continue
3371 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
3374 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3375 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
3383 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
3385 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3386 struct ieee80211_if_sta
*ifsta
;
3387 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3389 if (len
> IEEE80211_MAX_SSID_LEN
)
3392 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
3394 if (local
->ops
->conf_tx
) {
3395 struct ieee80211_tx_queue_params qparam
;
3398 memset(&qparam
, 0, sizeof(qparam
));
3402 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
3403 !(sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
))
3408 qparam
.cw_max
= 1023;
3411 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
3412 local
->ops
->conf_tx(local_to_hw(local
),
3413 i
+ IEEE80211_TX_QUEUE_DATA0
,
3416 /* IBSS uses different parameters for Beacon sending */
3420 local
->ops
->conf_tx(local_to_hw(local
),
3421 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
3424 ifsta
= &sdata
->u
.sta
;
3426 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
3427 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
3428 memcpy(ifsta
->ssid
, ssid
, len
);
3429 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
3430 ifsta
->ssid_len
= len
;
3433 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
3435 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
3436 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3437 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
3438 ifsta
->ibss_join_req
= jiffies
;
3439 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3440 return ieee80211_sta_find_ibss(dev
, ifsta
);
3446 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
3448 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3449 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3450 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
3451 *len
= ifsta
->ssid_len
;
3456 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
3458 struct ieee80211_sub_if_data
*sdata
;
3459 struct ieee80211_if_sta
*ifsta
;
3462 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3463 ifsta
= &sdata
->u
.sta
;
3465 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3466 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
3467 res
= ieee80211_if_config(dev
);
3469 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
3470 "the low-level driver\n", dev
->name
);
3475 if (is_valid_ether_addr(bssid
))
3476 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
3478 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
3484 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
3485 struct ieee80211_sub_if_data
*sdata
,
3488 struct sk_buff
*skb
;
3489 struct ieee80211_hdr
*nullfunc
;
3492 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
3494 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
3495 "frame\n", sdata
->dev
->name
);
3498 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3500 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
3501 memset(nullfunc
, 0, 24);
3502 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
3503 IEEE80211_FCTL_TODS
;
3505 fc
|= IEEE80211_FCTL_PM
;
3506 nullfunc
->frame_control
= cpu_to_le16(fc
);
3507 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3508 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
3509 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3511 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
3515 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
3517 struct ieee80211_local
*local
= hw_to_local(hw
);
3518 struct net_device
*dev
= local
->scan_dev
;
3519 struct ieee80211_sub_if_data
*sdata
;
3520 union iwreq_data wrqu
;
3522 local
->last_scan_completed
= jiffies
;
3523 memset(&wrqu
, 0, sizeof(wrqu
));
3524 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
3526 if (local
->sta_hw_scanning
) {
3527 local
->sta_hw_scanning
= 0;
3531 local
->sta_sw_scanning
= 0;
3532 if (ieee80211_hw_config(local
))
3533 printk(KERN_DEBUG
"%s: failed to restore operational "
3534 "channel after scan\n", dev
->name
);
3537 netif_tx_lock_bh(local
->mdev
);
3538 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
3539 local
->ops
->configure_filter(local_to_hw(local
),
3540 FIF_BCN_PRBRESP_PROMISC
,
3541 &local
->filter_flags
,
3542 local
->mdev
->mc_count
,
3543 local
->mdev
->mc_list
);
3545 netif_tx_unlock_bh(local
->mdev
);
3548 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3550 /* No need to wake the master device. */
3551 if (sdata
->dev
== local
->mdev
)
3554 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
) {
3555 if (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
3556 ieee80211_send_nullfunc(local
, sdata
, 0);
3557 ieee80211_sta_timer((unsigned long)sdata
);
3560 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_MESH_POINT
)
3561 ieee80211_sta_timer((unsigned long)sdata
);
3563 netif_wake_queue(sdata
->dev
);
3568 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3569 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
3570 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3571 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
3572 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3573 !ieee80211_sta_active_ibss(dev
)))
3574 ieee80211_sta_find_ibss(dev
, ifsta
);
3577 EXPORT_SYMBOL(ieee80211_scan_completed
);
3579 void ieee80211_sta_scan_work(struct work_struct
*work
)
3581 struct ieee80211_local
*local
=
3582 container_of(work
, struct ieee80211_local
, scan_work
.work
);
3583 struct net_device
*dev
= local
->scan_dev
;
3584 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3585 struct ieee80211_supported_band
*sband
;
3586 struct ieee80211_channel
*chan
;
3588 unsigned long next_delay
= 0;
3590 if (!local
->sta_sw_scanning
)
3593 switch (local
->scan_state
) {
3594 case SCAN_SET_CHANNEL
:
3596 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
3597 * after we successfully scanned the last channel of the last
3598 * band (and the last band is supported by the hw)
3600 if (local
->scan_band
< IEEE80211_NUM_BANDS
)
3601 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3606 * If we are at an unsupported band and have more bands
3607 * left to scan, advance to the next supported one.
3609 while (!sband
&& local
->scan_band
< IEEE80211_NUM_BANDS
- 1) {
3611 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3612 local
->scan_channel_idx
= 0;
3615 /* if no more bands/channels left, complete scan */
3616 if (!sband
|| local
->scan_channel_idx
>= sband
->n_channels
) {
3617 ieee80211_scan_completed(local_to_hw(local
));
3621 chan
= &sband
->channels
[local
->scan_channel_idx
];
3623 if (chan
->flags
& IEEE80211_CHAN_DISABLED
||
3624 (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3625 chan
->flags
& IEEE80211_CHAN_NO_IBSS
))
3629 local
->scan_channel
= chan
;
3630 if (ieee80211_hw_config(local
)) {
3631 printk(KERN_DEBUG
"%s: failed to set freq to "
3632 "%d MHz for scan\n", dev
->name
,
3638 /* advance state machine to next channel/band */
3639 local
->scan_channel_idx
++;
3640 if (local
->scan_channel_idx
>= sband
->n_channels
) {
3642 * scan_band may end up == IEEE80211_NUM_BANDS, but
3643 * we'll catch that case above and complete the scan
3644 * if that is the case.
3647 local
->scan_channel_idx
= 0;
3653 next_delay
= IEEE80211_PROBE_DELAY
+
3654 usecs_to_jiffies(local
->hw
.channel_change_time
);
3655 local
->scan_state
= SCAN_SEND_PROBE
;
3657 case SCAN_SEND_PROBE
:
3658 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
3659 local
->scan_state
= SCAN_SET_CHANNEL
;
3661 if (local
->scan_channel
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)
3663 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
3664 local
->scan_ssid_len
);
3665 next_delay
= IEEE80211_CHANNEL_TIME
;
3669 if (local
->sta_sw_scanning
)
3670 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3675 static int ieee80211_sta_start_scan(struct net_device
*dev
,
3676 u8
*ssid
, size_t ssid_len
)
3678 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3679 struct ieee80211_sub_if_data
*sdata
;
3681 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
3684 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
3685 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
3688 * ScanType: ACTIVE, PASSIVE
3689 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
3690 * a Probe frame during active scanning
3692 * MinChannelTime (>= ProbeDelay), in TU
3693 * MaxChannelTime: (>= MinChannelTime), in TU
3696 /* MLME-SCAN.confirm
3698 * ResultCode: SUCCESS, INVALID_PARAMETERS
3701 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3702 if (local
->scan_dev
== dev
)
3707 if (local
->ops
->hw_scan
) {
3708 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
3711 local
->sta_hw_scanning
= 1;
3712 local
->scan_dev
= dev
;
3717 local
->sta_sw_scanning
= 1;
3720 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3722 /* Don't stop the master interface, otherwise we can't transmit
3724 if (sdata
->dev
== local
->mdev
)
3727 netif_stop_queue(sdata
->dev
);
3728 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3729 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
3730 ieee80211_send_nullfunc(local
, sdata
, 1);
3735 local
->scan_ssid_len
= ssid_len
;
3736 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
3738 local
->scan_ssid_len
= 0;
3739 local
->scan_state
= SCAN_SET_CHANNEL
;
3740 local
->scan_channel_idx
= 0;
3741 local
->scan_band
= IEEE80211_BAND_2GHZ
;
3742 local
->scan_dev
= dev
;
3744 netif_tx_lock_bh(local
->mdev
);
3745 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
3746 local
->ops
->configure_filter(local_to_hw(local
),
3747 FIF_BCN_PRBRESP_PROMISC
,
3748 &local
->filter_flags
,
3749 local
->mdev
->mc_count
,
3750 local
->mdev
->mc_list
);
3751 netif_tx_unlock_bh(local
->mdev
);
3753 /* TODO: start scan as soon as all nullfunc frames are ACKed */
3754 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3755 IEEE80211_CHANNEL_TIME
);
3761 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
3763 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3764 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3765 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3767 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3768 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
3770 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3771 if (local
->scan_dev
== dev
)
3776 ifsta
->scan_ssid_len
= ssid_len
;
3778 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
3779 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
3780 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3785 ieee80211_sta_scan_result(struct net_device
*dev
,
3786 struct ieee80211_sta_bss
*bss
,
3787 char *current_ev
, char *end_buf
)
3789 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3790 struct iw_event iwe
;
3792 if (time_after(jiffies
,
3793 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
3796 memset(&iwe
, 0, sizeof(iwe
));
3797 iwe
.cmd
= SIOCGIWAP
;
3798 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
3799 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
3800 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3803 memset(&iwe
, 0, sizeof(iwe
));
3804 iwe
.cmd
= SIOCGIWESSID
;
3805 if (bss_mesh_cfg(bss
)) {
3806 iwe
.u
.data
.length
= bss_mesh_id_len(bss
);
3807 iwe
.u
.data
.flags
= 1;
3808 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3811 iwe
.u
.data
.length
= bss
->ssid_len
;
3812 iwe
.u
.data
.flags
= 1;
3813 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3817 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
3818 || bss_mesh_cfg(bss
))) {
3819 memset(&iwe
, 0, sizeof(iwe
));
3820 iwe
.cmd
= SIOCGIWMODE
;
3821 if (bss_mesh_cfg(bss
))
3822 iwe
.u
.mode
= IW_MODE_MESH
;
3823 else if (bss
->capability
& WLAN_CAPABILITY_ESS
)
3824 iwe
.u
.mode
= IW_MODE_MASTER
;
3826 iwe
.u
.mode
= IW_MODE_ADHOC
;
3827 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3831 memset(&iwe
, 0, sizeof(iwe
));
3832 iwe
.cmd
= SIOCGIWFREQ
;
3833 iwe
.u
.freq
.m
= bss
->freq
;
3835 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3838 memset(&iwe
, 0, sizeof(iwe
));
3839 iwe
.cmd
= SIOCGIWFREQ
;
3840 iwe
.u
.freq
.m
= ieee80211_frequency_to_channel(bss
->freq
);
3842 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3845 memset(&iwe
, 0, sizeof(iwe
));
3847 iwe
.u
.qual
.qual
= bss
->signal
;
3848 iwe
.u
.qual
.level
= bss
->rssi
;
3849 iwe
.u
.qual
.noise
= bss
->noise
;
3850 iwe
.u
.qual
.updated
= local
->wstats_flags
;
3851 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3854 memset(&iwe
, 0, sizeof(iwe
));
3855 iwe
.cmd
= SIOCGIWENCODE
;
3856 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
3857 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
3859 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
3860 iwe
.u
.data
.length
= 0;
3861 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
3863 if (bss
&& bss
->wpa_ie
) {
3864 memset(&iwe
, 0, sizeof(iwe
));
3865 iwe
.cmd
= IWEVGENIE
;
3866 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
3867 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3871 if (bss
&& bss
->rsn_ie
) {
3872 memset(&iwe
, 0, sizeof(iwe
));
3873 iwe
.cmd
= IWEVGENIE
;
3874 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
3875 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3879 if (bss
&& bss
->supp_rates_len
> 0) {
3880 /* display all supported rates in readable format */
3881 char *p
= current_ev
+ IW_EV_LCP_LEN
;
3884 memset(&iwe
, 0, sizeof(iwe
));
3885 iwe
.cmd
= SIOCGIWRATE
;
3886 /* Those two flags are ignored... */
3887 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
3889 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
3890 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
3892 p
= iwe_stream_add_value(current_ev
, p
,
3893 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
3900 buf
= kmalloc(30, GFP_ATOMIC
);
3902 memset(&iwe
, 0, sizeof(iwe
));
3903 iwe
.cmd
= IWEVCUSTOM
;
3904 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
3905 iwe
.u
.data
.length
= strlen(buf
);
3906 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
3912 if (bss_mesh_cfg(bss
)) {
3914 u8
*cfg
= bss_mesh_cfg(bss
);
3915 buf
= kmalloc(200, GFP_ATOMIC
);
3917 memset(&iwe
, 0, sizeof(iwe
));
3918 iwe
.cmd
= IWEVCUSTOM
;
3919 sprintf(buf
, "Mesh network (version %d)\n"
3920 "\t\t\tPath Selection Protocol ID: 0x%02X%02X%02X%02X\n"
3921 "\t\t\tPath Selection Metric ID: 0x%02X%02X%02X%02X\n"
3922 "\t\t\tCongestion Control Mode ID: 0x%02X%02X%02X%02X\n"
3923 "\t\t\tChannel Precedence: 0x%02X%02X%02X%02X",
3924 cfg
[0], cfg
[1], cfg
[2], cfg
[3], cfg
[4], cfg
[5], cfg
[6],
3925 cfg
[7], cfg
[8], cfg
[9], cfg
[10], cfg
[11], cfg
[12],
3926 cfg
[13], cfg
[14], cfg
[15], cfg
[16]);
3927 iwe
.u
.data
.length
= strlen(buf
);
3928 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
3938 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
3940 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3941 char *current_ev
= buf
;
3942 char *end_buf
= buf
+ len
;
3943 struct ieee80211_sta_bss
*bss
;
3945 spin_lock_bh(&local
->sta_bss_lock
);
3946 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3947 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
3948 spin_unlock_bh(&local
->sta_bss_lock
);
3951 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
3954 spin_unlock_bh(&local
->sta_bss_lock
);
3955 return current_ev
- buf
;
3959 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
3961 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3962 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3963 kfree(ifsta
->extra_ie
);
3965 ifsta
->extra_ie
= NULL
;
3966 ifsta
->extra_ie_len
= 0;
3969 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
3970 if (!ifsta
->extra_ie
) {
3971 ifsta
->extra_ie_len
= 0;
3974 memcpy(ifsta
->extra_ie
, ie
, len
);
3975 ifsta
->extra_ie_len
= len
;
3980 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
3981 struct sk_buff
*skb
, u8
*bssid
,
3984 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3985 struct sta_info
*sta
;
3986 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3987 DECLARE_MAC_BUF(mac
);
3989 /* TODO: Could consider removing the least recently used entry and
3990 * allow new one to be added. */
3991 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
3992 if (net_ratelimit()) {
3993 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
3994 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
3999 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
4000 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
4002 sta
= sta_info_add(local
, dev
, addr
, GFP_ATOMIC
);
4006 sta
->flags
|= WLAN_STA_AUTHORIZED
;
4008 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] =
4009 sdata
->u
.sta
.supp_rates_bits
[local
->hw
.conf
.channel
->band
];
4011 rate_control_rate_init(sta
, local
);
4013 return sta
; /* caller will call sta_info_put() */
4017 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
4019 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4020 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4022 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
4025 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
4026 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
4029 ieee80211_send_deauth(dev
, ifsta
, reason
);
4030 ieee80211_set_disassoc(dev
, ifsta
, 1);
4035 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
4037 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4038 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4040 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
4043 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4046 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
4049 ieee80211_send_disassoc(dev
, ifsta
, reason
);
4050 ieee80211_set_disassoc(dev
, ifsta
, 0);