2 * BSS client mode implementation
3 * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
15 * order BSS list by RSSI(?) ("quality of AP")
16 * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
19 #include <linux/delay.h>
20 #include <linux/if_ether.h>
21 #include <linux/skbuff.h>
22 #include <linux/netdevice.h>
23 #include <linux/if_arp.h>
24 #include <linux/wireless.h>
25 #include <linux/random.h>
26 #include <linux/etherdevice.h>
27 #include <linux/rtnetlink.h>
28 #include <net/iw_handler.h>
29 #include <asm/types.h>
31 #include <net/mac80211.h>
32 #include "ieee80211_i.h"
37 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
38 #define IEEE80211_AUTH_MAX_TRIES 3
39 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
40 #define IEEE80211_ASSOC_MAX_TRIES 3
41 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
42 #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
43 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
44 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
45 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
46 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
47 #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ)
49 #define IEEE80211_PROBE_DELAY (HZ / 33)
50 #define IEEE80211_CHANNEL_TIME (HZ / 33)
51 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
52 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
53 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
54 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
55 #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
57 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
60 #define ERP_INFO_USE_PROTECTION BIT(1)
62 /* mgmt header + 1 byte action code */
63 #define IEEE80211_MIN_ACTION_SIZE (24 + 1)
65 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
66 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
67 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
68 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
69 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
71 /* next values represent the buffer size for A-MPDU frame.
72 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
73 #define IEEE80211_MIN_AMPDU_BUF 0x8
74 #define IEEE80211_MAX_AMPDU_BUF 0x40
76 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
77 u8
*ssid
, size_t ssid_len
);
78 static struct ieee80211_sta_bss
*
79 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
80 u8
*ssid
, u8 ssid_len
);
81 static void ieee80211_rx_bss_put(struct ieee80211_local
*local
,
82 struct ieee80211_sta_bss
*bss
);
83 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
84 struct ieee80211_if_sta
*ifsta
);
85 static int ieee80211_sta_wep_configured(struct net_device
*dev
);
86 static int ieee80211_sta_start_scan(struct net_device
*dev
,
87 u8
*ssid
, size_t ssid_len
);
88 static int ieee80211_sta_config_auth(struct net_device
*dev
,
89 struct ieee80211_if_sta
*ifsta
);
90 static void sta_rx_agg_session_timer_expired(unsigned long data
);
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
;
207 case WLAN_EID_CHANNEL_SWITCH
:
208 elems
->ch_switch_elem
= pos
;
209 elems
->ch_switch_elem_len
= elen
;
212 if (!elems
->quiet_elem
) {
213 elems
->quiet_elem
= pos
;
214 elems
->quiet_elem_len
= elen
;
216 elems
->num_of_quiet_elem
++;
218 case WLAN_EID_COUNTRY
:
219 elems
->country_elem
= pos
;
220 elems
->country_elem_len
= elen
;
222 case WLAN_EID_PWR_CONSTRAINT
:
223 elems
->pwr_constr_elem
= pos
;
224 elems
->pwr_constr_elem_len
= elen
;
236 static int ecw2cw(int ecw
)
238 return (1 << ecw
) - 1;
242 static void ieee80211_sta_def_wmm_params(struct net_device
*dev
,
243 struct ieee80211_sta_bss
*bss
,
246 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
247 struct ieee80211_local
*local
= sdata
->local
;
248 int i
, have_higher_than_11mbit
= 0;
251 /* cf. IEEE 802.11 9.2.12 */
252 for (i
= 0; i
< bss
->supp_rates_len
; i
++)
253 if ((bss
->supp_rates
[i
] & 0x7f) * 5 > 110)
254 have_higher_than_11mbit
= 1;
256 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
257 have_higher_than_11mbit
)
258 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
260 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
263 if (local
->ops
->conf_tx
) {
264 struct ieee80211_tx_queue_params qparam
;
266 memset(&qparam
, 0, sizeof(qparam
));
270 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
271 !(sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
))
276 qparam
.cw_max
= 1023;
279 for (i
= 0; i
< local_to_hw(local
)->queues
; i
++)
280 local
->ops
->conf_tx(local_to_hw(local
), i
, &qparam
);
284 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
285 struct ieee80211_if_sta
*ifsta
,
286 u8
*wmm_param
, size_t wmm_param_len
)
288 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
289 struct ieee80211_tx_queue_params params
;
294 if (!(ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
))
300 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
302 count
= wmm_param
[6] & 0x0f;
303 if (count
== ifsta
->wmm_last_param_set
)
305 ifsta
->wmm_last_param_set
= count
;
308 left
= wmm_param_len
- 8;
310 memset(¶ms
, 0, sizeof(params
));
312 if (!local
->ops
->conf_tx
)
316 for (; left
>= 4; left
-= 4, pos
+= 4) {
317 int aci
= (pos
[0] >> 5) & 0x03;
318 int acm
= (pos
[0] >> 4) & 0x01;
325 local
->wmm_acm
|= BIT(0) | BIT(3);
330 local
->wmm_acm
|= BIT(4) | BIT(5);
335 local
->wmm_acm
|= BIT(6) | BIT(7);
341 local
->wmm_acm
|= BIT(1) | BIT(2);
345 params
.aifs
= pos
[0] & 0x0f;
346 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
347 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
348 params
.txop
= get_unaligned_le16(pos
+ 2);
349 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
350 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
351 "cWmin=%d cWmax=%d txop=%d\n",
352 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
353 params
.cw_max
, params
.txop
);
355 /* TODO: handle ACM (block TX, fallback to next lowest allowed
357 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
358 printk(KERN_DEBUG
"%s: failed to set TX queue "
359 "parameters for queue %d\n", dev
->name
, queue
);
364 static u32
ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data
*sdata
,
366 bool use_short_preamble
)
368 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
369 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
370 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
371 DECLARE_MAC_BUF(mac
);
375 if (use_protection
!= bss_conf
->use_cts_prot
) {
376 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
377 if (net_ratelimit()) {
378 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
381 use_protection
? "enabled" : "disabled",
382 print_mac(mac
, ifsta
->bssid
));
385 bss_conf
->use_cts_prot
= use_protection
;
386 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
389 if (use_short_preamble
!= bss_conf
->use_short_preamble
) {
390 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
391 if (net_ratelimit()) {
392 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
395 use_short_preamble
? "short" : "long",
396 print_mac(mac
, ifsta
->bssid
));
399 bss_conf
->use_short_preamble
= use_short_preamble
;
400 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
406 static u32
ieee80211_handle_erp_ie(struct ieee80211_sub_if_data
*sdata
,
409 bool use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
410 bool use_short_preamble
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) == 0;
412 return ieee80211_handle_protect_preamb(sdata
,
413 use_protection
, use_short_preamble
);
416 static u32
ieee80211_handle_bss_capability(struct ieee80211_sub_if_data
*sdata
,
417 struct ieee80211_sta_bss
*bss
)
421 if (bss
->has_erp_value
)
422 changed
|= ieee80211_handle_erp_ie(sdata
, bss
->erp_value
);
424 u16 capab
= bss
->capability
;
425 changed
|= ieee80211_handle_protect_preamb(sdata
, false,
426 (capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
) != 0);
432 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap
*ht_cap_ie
,
433 struct ieee80211_ht_info
*ht_info
)
439 memset(ht_info
, 0, sizeof(*ht_info
));
442 u8 ampdu_info
= ht_cap_ie
->ampdu_params_info
;
444 ht_info
->ht_supported
= 1;
445 ht_info
->cap
= le16_to_cpu(ht_cap_ie
->cap_info
);
446 ht_info
->ampdu_factor
=
447 ampdu_info
& IEEE80211_HT_CAP_AMPDU_FACTOR
;
448 ht_info
->ampdu_density
=
449 (ampdu_info
& IEEE80211_HT_CAP_AMPDU_DENSITY
) >> 2;
450 memcpy(ht_info
->supp_mcs_set
, ht_cap_ie
->supp_mcs_set
, 16);
452 ht_info
->ht_supported
= 0;
457 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
458 struct ieee80211_ht_addt_info
*ht_add_info_ie
,
459 struct ieee80211_ht_bss_info
*bss_info
)
461 if (bss_info
== NULL
)
464 memset(bss_info
, 0, sizeof(*bss_info
));
466 if (ht_add_info_ie
) {
468 op_mode
= le16_to_cpu(ht_add_info_ie
->operation_mode
);
470 bss_info
->primary_channel
= ht_add_info_ie
->control_chan
;
471 bss_info
->bss_cap
= ht_add_info_ie
->ht_param
;
472 bss_info
->bss_op_mode
= (u8
)(op_mode
& 0xff);
478 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
479 struct ieee80211_if_sta
*ifsta
)
484 union iwreq_data wrqu
;
486 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
489 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
490 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
494 len
= sprintf(buf
, "ASSOCINFO(");
495 if (ifsta
->assocreq_ies
) {
496 len
+= sprintf(buf
+ len
, "ReqIEs=");
497 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
498 len
+= sprintf(buf
+ len
, "%02x",
499 ifsta
->assocreq_ies
[i
]);
502 if (ifsta
->assocresp_ies
) {
503 if (ifsta
->assocreq_ies
)
504 len
+= sprintf(buf
+ len
, " ");
505 len
+= sprintf(buf
+ len
, "RespIEs=");
506 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
507 len
+= sprintf(buf
+ len
, "%02x",
508 ifsta
->assocresp_ies
[i
]);
511 len
+= sprintf(buf
+ len
, ")");
513 if (len
> IW_CUSTOM_MAX
) {
514 len
= sprintf(buf
, "ASSOCRESPIE=");
515 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
516 len
+= sprintf(buf
+ len
, "%02x",
517 ifsta
->assocresp_ies
[i
]);
521 memset(&wrqu
, 0, sizeof(wrqu
));
522 wrqu
.data
.length
= len
;
523 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
529 static void ieee80211_set_associated(struct net_device
*dev
,
530 struct ieee80211_if_sta
*ifsta
,
533 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
534 struct ieee80211_local
*local
= sdata
->local
;
535 struct ieee80211_conf
*conf
= &local_to_hw(local
)->conf
;
536 union iwreq_data wrqu
;
537 u32 changed
= BSS_CHANGED_ASSOC
;
540 struct ieee80211_sta_bss
*bss
;
542 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
544 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
547 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
548 conf
->channel
->center_freq
,
549 ifsta
->ssid
, ifsta
->ssid_len
);
551 /* set timing information */
552 sdata
->bss_conf
.beacon_int
= bss
->beacon_int
;
553 sdata
->bss_conf
.timestamp
= bss
->timestamp
;
555 changed
|= ieee80211_handle_bss_capability(sdata
, bss
);
557 ieee80211_rx_bss_put(local
, bss
);
560 if (conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
561 changed
|= BSS_CHANGED_HT
;
562 sdata
->bss_conf
.assoc_ht
= 1;
563 sdata
->bss_conf
.ht_conf
= &conf
->ht_conf
;
564 sdata
->bss_conf
.ht_bss_conf
= &conf
->ht_bss_conf
;
567 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
568 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
569 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
570 ieee80211_sta_send_associnfo(dev
, ifsta
);
572 netif_carrier_off(dev
);
573 ieee80211_sta_tear_down_BA_sessions(dev
, ifsta
->bssid
);
574 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
575 changed
|= ieee80211_reset_erp_info(dev
);
577 sdata
->bss_conf
.assoc_ht
= 0;
578 sdata
->bss_conf
.ht_conf
= NULL
;
579 sdata
->bss_conf
.ht_bss_conf
= NULL
;
581 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
583 ifsta
->last_probe
= jiffies
;
584 ieee80211_led_assoc(local
, assoc
);
586 sdata
->bss_conf
.assoc
= assoc
;
587 ieee80211_bss_info_change_notify(sdata
, changed
);
590 netif_carrier_on(dev
);
592 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
593 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
596 static void ieee80211_set_disassoc(struct net_device
*dev
,
597 struct ieee80211_if_sta
*ifsta
, int deauth
)
600 ifsta
->auth_tries
= 0;
601 ifsta
->assoc_tries
= 0;
602 ieee80211_set_associated(dev
, ifsta
, 0);
605 void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
608 struct ieee80211_sub_if_data
*sdata
;
609 struct ieee80211_tx_info
*info
;
611 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
612 skb
->dev
= sdata
->local
->mdev
;
613 skb_set_mac_header(skb
, 0);
614 skb_set_network_header(skb
, 0);
615 skb_set_transport_header(skb
, 0);
617 info
= IEEE80211_SKB_CB(skb
);
618 memset(info
, 0, sizeof(struct ieee80211_tx_info
));
619 info
->control
.ifindex
= sdata
->dev
->ifindex
;
621 info
->flags
|= IEEE80211_TX_CTL_DO_NOT_ENCRYPT
;
627 static void ieee80211_send_auth(struct net_device
*dev
,
628 struct ieee80211_if_sta
*ifsta
,
629 int transaction
, u8
*extra
, size_t extra_len
,
632 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
634 struct ieee80211_mgmt
*mgmt
;
636 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
637 sizeof(*mgmt
) + 6 + extra_len
);
639 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
640 "frame\n", dev
->name
);
643 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
645 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
646 memset(mgmt
, 0, 24 + 6);
647 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
648 IEEE80211_STYPE_AUTH
);
650 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
651 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
652 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
653 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
654 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
655 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
656 ifsta
->auth_transaction
= transaction
+ 1;
657 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
659 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
661 ieee80211_sta_tx(dev
, skb
, encrypt
);
665 static void ieee80211_authenticate(struct net_device
*dev
,
666 struct ieee80211_if_sta
*ifsta
)
668 DECLARE_MAC_BUF(mac
);
671 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
672 printk(KERN_DEBUG
"%s: authentication with AP %s"
674 dev
->name
, print_mac(mac
, ifsta
->bssid
));
675 ifsta
->state
= IEEE80211_DISABLED
;
679 ifsta
->state
= IEEE80211_AUTHENTICATE
;
680 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
681 dev
->name
, print_mac(mac
, ifsta
->bssid
));
683 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
685 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
688 static int ieee80211_compatible_rates(struct ieee80211_sta_bss
*bss
,
689 struct ieee80211_supported_band
*sband
,
695 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
696 int rate
= (bss
->supp_rates
[i
] & 0x7F) * 5;
698 for (j
= 0; j
< sband
->n_bitrates
; j
++)
699 if (sband
->bitrates
[j
].bitrate
== rate
) {
709 static void ieee80211_send_assoc(struct net_device
*dev
,
710 struct ieee80211_if_sta
*ifsta
)
712 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
714 struct ieee80211_mgmt
*mgmt
;
716 int i
, len
, count
, rates_len
, supp_rates_len
;
718 struct ieee80211_sta_bss
*bss
;
720 struct ieee80211_supported_band
*sband
;
723 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
724 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
727 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
728 "frame\n", dev
->name
);
731 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
733 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
735 capab
= ifsta
->capab
;
737 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
) {
738 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
))
739 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
740 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
))
741 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
744 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
745 local
->hw
.conf
.channel
->center_freq
,
746 ifsta
->ssid
, ifsta
->ssid_len
);
748 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
749 capab
|= WLAN_CAPABILITY_PRIVACY
;
753 /* get all rates supported by the device and the AP as
754 * some APs don't like getting a superset of their rates
755 * in the association request (e.g. D-Link DAP 1353 in
757 rates_len
= ieee80211_compatible_rates(bss
, sband
, &rates
);
759 if ((bss
->capability
& WLAN_CAPABILITY_SPECTRUM_MGMT
) &&
760 (local
->hw
.flags
& IEEE80211_HW_SPECTRUM_MGMT
))
761 capab
|= WLAN_CAPABILITY_SPECTRUM_MGMT
;
763 ieee80211_rx_bss_put(local
, bss
);
766 rates_len
= sband
->n_bitrates
;
769 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
771 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
772 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
773 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
775 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
777 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
778 IEEE80211_STYPE_REASSOC_REQ
);
779 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
780 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
781 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
785 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
786 IEEE80211_STYPE_ASSOC_REQ
);
787 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
788 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
792 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
793 *pos
++ = WLAN_EID_SSID
;
794 *pos
++ = ifsta
->ssid_len
;
795 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
797 /* add all rates which were marked to be used above */
798 supp_rates_len
= rates_len
;
799 if (supp_rates_len
> 8)
802 len
= sband
->n_bitrates
;
803 pos
= skb_put(skb
, supp_rates_len
+ 2);
804 *pos
++ = WLAN_EID_SUPP_RATES
;
805 *pos
++ = supp_rates_len
;
808 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
809 if (BIT(i
) & rates
) {
810 int rate
= sband
->bitrates
[i
].bitrate
;
811 *pos
++ = (u8
) (rate
/ 5);
818 pos
= skb_put(skb
, rates_len
- count
+ 2);
819 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
820 *pos
++ = rates_len
- count
;
822 for (i
++; i
< sband
->n_bitrates
; i
++) {
823 if (BIT(i
) & rates
) {
824 int rate
= sband
->bitrates
[i
].bitrate
;
825 *pos
++ = (u8
) (rate
/ 5);
830 if (capab
& WLAN_CAPABILITY_SPECTRUM_MGMT
) {
831 /* 1. power capabilities */
832 pos
= skb_put(skb
, 4);
833 *pos
++ = WLAN_EID_PWR_CAPABILITY
;
835 *pos
++ = 0; /* min tx power */
836 *pos
++ = local
->hw
.conf
.channel
->max_power
; /* max tx power */
838 /* 2. supported channels */
839 /* TODO: get this in reg domain format */
840 pos
= skb_put(skb
, 2 * sband
->n_channels
+ 2);
841 *pos
++ = WLAN_EID_SUPPORTED_CHANNELS
;
842 *pos
++ = 2 * sband
->n_channels
;
843 for (i
= 0; i
< sband
->n_channels
; i
++) {
844 *pos
++ = ieee80211_frequency_to_channel(
845 sband
->channels
[i
].center_freq
);
846 *pos
++ = 1; /* one channel in the subband*/
850 if (ifsta
->extra_ie
) {
851 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
852 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
855 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
856 pos
= skb_put(skb
, 9);
857 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
858 *pos
++ = 7; /* len */
859 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
862 *pos
++ = 2; /* WME */
863 *pos
++ = 0; /* WME info */
864 *pos
++ = 1; /* WME ver */
868 /* wmm support is a must to HT */
869 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
) &&
870 sband
->ht_info
.ht_supported
&& bss
->ht_add_ie
) {
871 struct ieee80211_ht_addt_info
*ht_add_info
=
872 (struct ieee80211_ht_addt_info
*)bss
->ht_add_ie
;
873 u16 cap
= sband
->ht_info
.cap
;
875 u32 flags
= local
->hw
.conf
.channel
->flags
;
877 switch (ht_add_info
->ht_param
& IEEE80211_HT_IE_CHA_SEC_OFFSET
) {
878 case IEEE80211_HT_IE_CHA_SEC_ABOVE
:
879 if (flags
& IEEE80211_CHAN_NO_FAT_ABOVE
) {
880 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH
;
881 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
884 case IEEE80211_HT_IE_CHA_SEC_BELOW
:
885 if (flags
& IEEE80211_CHAN_NO_FAT_BELOW
) {
886 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH
;
887 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
892 tmp
= cpu_to_le16(cap
);
893 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
)+2);
894 *pos
++ = WLAN_EID_HT_CAPABILITY
;
895 *pos
++ = sizeof(struct ieee80211_ht_cap
);
896 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
897 memcpy(pos
, &tmp
, sizeof(u16
));
899 /* TODO: needs a define here for << 2 */
900 *pos
++ = sband
->ht_info
.ampdu_factor
|
901 (sband
->ht_info
.ampdu_density
<< 2);
902 memcpy(pos
, sband
->ht_info
.supp_mcs_set
, 16);
905 kfree(ifsta
->assocreq_ies
);
906 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
907 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
908 if (ifsta
->assocreq_ies
)
909 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
911 ieee80211_sta_tx(dev
, skb
, 0);
915 static void ieee80211_send_deauth(struct net_device
*dev
,
916 struct ieee80211_if_sta
*ifsta
, u16 reason
)
918 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
920 struct ieee80211_mgmt
*mgmt
;
922 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
924 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
925 "frame\n", dev
->name
);
928 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
930 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
932 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
933 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
934 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
935 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
936 IEEE80211_STYPE_DEAUTH
);
938 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
940 ieee80211_sta_tx(dev
, skb
, 0);
944 static void ieee80211_send_disassoc(struct net_device
*dev
,
945 struct ieee80211_if_sta
*ifsta
, u16 reason
)
947 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
949 struct ieee80211_mgmt
*mgmt
;
951 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
953 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
954 "frame\n", dev
->name
);
957 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
959 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
961 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
962 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
963 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
964 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
965 IEEE80211_STYPE_DISASSOC
);
967 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
969 ieee80211_sta_tx(dev
, skb
, 0);
973 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
974 struct ieee80211_if_sta
*ifsta
)
976 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
977 struct ieee80211_sta_bss
*bss
;
982 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
985 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
986 local
->hw
.conf
.channel
->center_freq
,
987 ifsta
->ssid
, ifsta
->ssid_len
);
991 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
992 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
993 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
995 ieee80211_rx_bss_put(local
, bss
);
997 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
1004 static void ieee80211_associate(struct net_device
*dev
,
1005 struct ieee80211_if_sta
*ifsta
)
1007 DECLARE_MAC_BUF(mac
);
1009 ifsta
->assoc_tries
++;
1010 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
1011 printk(KERN_DEBUG
"%s: association with AP %s"
1013 dev
->name
, print_mac(mac
, ifsta
->bssid
));
1014 ifsta
->state
= IEEE80211_DISABLED
;
1018 ifsta
->state
= IEEE80211_ASSOCIATE
;
1019 printk(KERN_DEBUG
"%s: associate with AP %s\n",
1020 dev
->name
, print_mac(mac
, ifsta
->bssid
));
1021 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
1022 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
1023 "mixed-cell disabled - abort association\n", dev
->name
);
1024 ifsta
->state
= IEEE80211_DISABLED
;
1028 ieee80211_send_assoc(dev
, ifsta
);
1030 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
1034 static void ieee80211_associated(struct net_device
*dev
,
1035 struct ieee80211_if_sta
*ifsta
)
1037 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1038 struct sta_info
*sta
;
1040 DECLARE_MAC_BUF(mac
);
1042 /* TODO: start monitoring current AP signal quality and number of
1043 * missed beacons. Scan other channels every now and then and search
1044 * for better APs. */
1045 /* TODO: remove expired BSSes */
1047 ifsta
->state
= IEEE80211_ASSOCIATED
;
1051 sta
= sta_info_get(local
, ifsta
->bssid
);
1053 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
1054 dev
->name
, print_mac(mac
, ifsta
->bssid
));
1058 if (time_after(jiffies
,
1059 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
1060 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
1061 printk(KERN_DEBUG
"%s: No ProbeResp from "
1062 "current AP %s - assume out of "
1064 dev
->name
, print_mac(mac
, ifsta
->bssid
));
1066 sta_info_unlink(&sta
);
1068 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
1070 local
->scan_ssid_len
);
1071 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
1073 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
1074 if (time_after(jiffies
, ifsta
->last_probe
+
1075 IEEE80211_PROBE_INTERVAL
)) {
1076 ifsta
->last_probe
= jiffies
;
1077 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
1086 if (disassoc
&& sta
)
1087 sta_info_destroy(sta
);
1090 ifsta
->state
= IEEE80211_DISABLED
;
1091 ieee80211_set_associated(dev
, ifsta
, 0);
1093 mod_timer(&ifsta
->timer
, jiffies
+
1094 IEEE80211_MONITORING_INTERVAL
);
1099 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
1100 u8
*ssid
, size_t ssid_len
)
1102 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1103 struct ieee80211_supported_band
*sband
;
1104 struct sk_buff
*skb
;
1105 struct ieee80211_mgmt
*mgmt
;
1106 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
1109 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
1111 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
1112 "request\n", dev
->name
);
1115 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1117 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1118 memset(mgmt
, 0, 24);
1119 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1120 IEEE80211_STYPE_PROBE_REQ
);
1121 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1123 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
1124 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
1126 memset(mgmt
->da
, 0xff, ETH_ALEN
);
1127 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
1129 pos
= skb_put(skb
, 2 + ssid_len
);
1130 *pos
++ = WLAN_EID_SSID
;
1132 memcpy(pos
, ssid
, ssid_len
);
1134 supp_rates
= skb_put(skb
, 2);
1135 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
1137 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
1139 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
1140 struct ieee80211_rate
*rate
= &sband
->bitrates
[i
];
1142 pos
= skb_put(skb
, 1);
1144 } else if (supp_rates
[1] == 8) {
1145 esupp_rates
= skb_put(skb
, 3);
1146 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
1148 pos
= &esupp_rates
[2];
1150 pos
= skb_put(skb
, 1);
1153 *pos
= rate
->bitrate
/ 5;
1156 ieee80211_sta_tx(dev
, skb
, 0);
1160 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
1162 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1163 if (!sdata
|| !sdata
->default_key
||
1164 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
1170 static void ieee80211_auth_completed(struct net_device
*dev
,
1171 struct ieee80211_if_sta
*ifsta
)
1173 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
1174 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
1175 ieee80211_associate(dev
, ifsta
);
1179 static void ieee80211_auth_challenge(struct net_device
*dev
,
1180 struct ieee80211_if_sta
*ifsta
,
1181 struct ieee80211_mgmt
*mgmt
,
1185 struct ieee802_11_elems elems
;
1187 pos
= mgmt
->u
.auth
.variable
;
1188 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1189 if (!elems
.challenge
)
1191 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
1192 elems
.challenge_len
+ 2, 1);
1195 static void ieee80211_send_addba_resp(struct net_device
*dev
, u8
*da
, u16 tid
,
1196 u8 dialog_token
, u16 status
, u16 policy
,
1197 u16 buf_size
, u16 timeout
)
1199 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1200 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1201 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1202 struct sk_buff
*skb
;
1203 struct ieee80211_mgmt
*mgmt
;
1206 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
);
1209 printk(KERN_DEBUG
"%s: failed to allocate buffer "
1210 "for addba resp frame\n", dev
->name
);
1214 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1215 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1216 memset(mgmt
, 0, 24);
1217 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1218 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1219 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1220 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1222 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1223 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1224 IEEE80211_STYPE_ACTION
);
1226 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
1227 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1228 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
1229 mgmt
->u
.action
.u
.addba_resp
.dialog_token
= dialog_token
;
1231 capab
= (u16
)(policy
<< 1); /* bit 1 aggregation policy */
1232 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1233 capab
|= (u16
)(buf_size
<< 6); /* bit 15:6 max size of aggregation */
1235 mgmt
->u
.action
.u
.addba_resp
.capab
= cpu_to_le16(capab
);
1236 mgmt
->u
.action
.u
.addba_resp
.timeout
= cpu_to_le16(timeout
);
1237 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
1239 ieee80211_sta_tx(dev
, skb
, 0);
1244 void ieee80211_send_addba_request(struct net_device
*dev
, const u8
*da
,
1245 u16 tid
, u8 dialog_token
, u16 start_seq_num
,
1246 u16 agg_size
, u16 timeout
)
1248 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1249 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1250 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1251 struct sk_buff
*skb
;
1252 struct ieee80211_mgmt
*mgmt
;
1255 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
);
1258 printk(KERN_ERR
"%s: failed to allocate buffer "
1259 "for addba request frame\n", dev
->name
);
1262 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1263 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1264 memset(mgmt
, 0, 24);
1265 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1266 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1267 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1268 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1270 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1272 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1273 IEEE80211_STYPE_ACTION
);
1275 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_req
));
1277 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1278 mgmt
->u
.action
.u
.addba_req
.action_code
= WLAN_ACTION_ADDBA_REQ
;
1280 mgmt
->u
.action
.u
.addba_req
.dialog_token
= dialog_token
;
1281 capab
= (u16
)(1 << 1); /* bit 1 aggregation policy */
1282 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1283 capab
|= (u16
)(agg_size
<< 6); /* bit 15:6 max size of aggergation */
1285 mgmt
->u
.action
.u
.addba_req
.capab
= cpu_to_le16(capab
);
1287 mgmt
->u
.action
.u
.addba_req
.timeout
= cpu_to_le16(timeout
);
1288 mgmt
->u
.action
.u
.addba_req
.start_seq_num
=
1289 cpu_to_le16(start_seq_num
<< 4);
1291 ieee80211_sta_tx(dev
, skb
, 0);
1294 static void ieee80211_sta_process_addba_request(struct net_device
*dev
,
1295 struct ieee80211_mgmt
*mgmt
,
1298 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1299 struct ieee80211_hw
*hw
= &local
->hw
;
1300 struct ieee80211_conf
*conf
= &hw
->conf
;
1301 struct sta_info
*sta
;
1302 struct tid_ampdu_rx
*tid_agg_rx
;
1303 u16 capab
, tid
, timeout
, ba_policy
, buf_size
, start_seq_num
, status
;
1305 int ret
= -EOPNOTSUPP
;
1306 DECLARE_MAC_BUF(mac
);
1310 sta
= sta_info_get(local
, mgmt
->sa
);
1316 /* extract session parameters from addba request frame */
1317 dialog_token
= mgmt
->u
.action
.u
.addba_req
.dialog_token
;
1318 timeout
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.timeout
);
1320 le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.start_seq_num
) >> 4;
1322 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.capab
);
1323 ba_policy
= (capab
& IEEE80211_ADDBA_PARAM_POLICY_MASK
) >> 1;
1324 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1325 buf_size
= (capab
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
) >> 6;
1327 status
= WLAN_STATUS_REQUEST_DECLINED
;
1329 /* sanity check for incoming parameters:
1330 * check if configuration can support the BA policy
1331 * and if buffer size does not exceeds max value */
1332 if (((ba_policy
!= 1)
1333 && (!(conf
->ht_conf
.cap
& IEEE80211_HT_CAP_DELAY_BA
)))
1334 || (buf_size
> IEEE80211_MAX_AMPDU_BUF
)) {
1335 status
= WLAN_STATUS_INVALID_QOS_PARAM
;
1336 #ifdef CONFIG_MAC80211_HT_DEBUG
1337 if (net_ratelimit())
1338 printk(KERN_DEBUG
"AddBA Req with bad params from "
1339 "%s on tid %u. policy %d, buffer size %d\n",
1340 print_mac(mac
, mgmt
->sa
), tid
, ba_policy
,
1342 #endif /* CONFIG_MAC80211_HT_DEBUG */
1345 /* determine default buffer size */
1346 if (buf_size
== 0) {
1347 struct ieee80211_supported_band
*sband
;
1349 sband
= local
->hw
.wiphy
->bands
[conf
->channel
->band
];
1350 buf_size
= IEEE80211_MIN_AMPDU_BUF
;
1351 buf_size
= buf_size
<< sband
->ht_info
.ampdu_factor
;
1355 /* examine state machine */
1356 spin_lock_bh(&sta
->lock
);
1358 if (sta
->ampdu_mlme
.tid_state_rx
[tid
] != HT_AGG_STATE_IDLE
) {
1359 #ifdef CONFIG_MAC80211_HT_DEBUG
1360 if (net_ratelimit())
1361 printk(KERN_DEBUG
"unexpected AddBA Req from "
1363 print_mac(mac
, mgmt
->sa
), tid
);
1364 #endif /* CONFIG_MAC80211_HT_DEBUG */
1368 /* prepare A-MPDU MLME for Rx aggregation */
1369 sta
->ampdu_mlme
.tid_rx
[tid
] =
1370 kmalloc(sizeof(struct tid_ampdu_rx
), GFP_ATOMIC
);
1371 if (!sta
->ampdu_mlme
.tid_rx
[tid
]) {
1372 #ifdef CONFIG_MAC80211_HT_DEBUG
1373 if (net_ratelimit())
1374 printk(KERN_ERR
"allocate rx mlme to tid %d failed\n",
1380 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.function
=
1381 sta_rx_agg_session_timer_expired
;
1382 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.data
=
1383 (unsigned long)&sta
->timer_to_tid
[tid
];
1384 init_timer(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1386 tid_agg_rx
= sta
->ampdu_mlme
.tid_rx
[tid
];
1388 /* prepare reordering buffer */
1389 tid_agg_rx
->reorder_buf
=
1390 kmalloc(buf_size
* sizeof(struct sk_buff
*), GFP_ATOMIC
);
1391 if (!tid_agg_rx
->reorder_buf
) {
1392 #ifdef CONFIG_MAC80211_HT_DEBUG
1393 if (net_ratelimit())
1394 printk(KERN_ERR
"can not allocate reordering buffer "
1395 "to tid %d\n", tid
);
1397 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1400 memset(tid_agg_rx
->reorder_buf
, 0,
1401 buf_size
* sizeof(struct sk_buff
*));
1403 if (local
->ops
->ampdu_action
)
1404 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_START
,
1405 sta
->addr
, tid
, &start_seq_num
);
1406 #ifdef CONFIG_MAC80211_HT_DEBUG
1407 printk(KERN_DEBUG
"Rx A-MPDU request on tid %d result %d\n", tid
, ret
);
1408 #endif /* CONFIG_MAC80211_HT_DEBUG */
1411 kfree(tid_agg_rx
->reorder_buf
);
1413 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1417 /* change state and send addba resp */
1418 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_OPERATIONAL
;
1419 tid_agg_rx
->dialog_token
= dialog_token
;
1420 tid_agg_rx
->ssn
= start_seq_num
;
1421 tid_agg_rx
->head_seq_num
= start_seq_num
;
1422 tid_agg_rx
->buf_size
= buf_size
;
1423 tid_agg_rx
->timeout
= timeout
;
1424 tid_agg_rx
->stored_mpdu_num
= 0;
1425 status
= WLAN_STATUS_SUCCESS
;
1427 spin_unlock_bh(&sta
->lock
);
1430 ieee80211_send_addba_resp(sta
->sdata
->dev
, sta
->addr
, tid
,
1431 dialog_token
, status
, 1, buf_size
, timeout
);
1435 static void ieee80211_sta_process_addba_resp(struct net_device
*dev
,
1436 struct ieee80211_mgmt
*mgmt
,
1439 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1440 struct ieee80211_hw
*hw
= &local
->hw
;
1441 struct sta_info
*sta
;
1448 sta
= sta_info_get(local
, mgmt
->sa
);
1454 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.capab
);
1455 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1457 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1459 spin_lock_bh(&sta
->lock
);
1461 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1462 spin_unlock_bh(&sta
->lock
);
1463 goto addba_resp_exit
;
1466 if (mgmt
->u
.action
.u
.addba_resp
.dialog_token
!=
1467 sta
->ampdu_mlme
.tid_tx
[tid
]->dialog_token
) {
1468 spin_unlock_bh(&sta
->lock
);
1469 #ifdef CONFIG_MAC80211_HT_DEBUG
1470 printk(KERN_DEBUG
"wrong addBA response token, tid %d\n", tid
);
1471 #endif /* CONFIG_MAC80211_HT_DEBUG */
1472 goto addba_resp_exit
;
1475 del_timer_sync(&sta
->ampdu_mlme
.tid_tx
[tid
]->addba_resp_timer
);
1476 #ifdef CONFIG_MAC80211_HT_DEBUG
1477 printk(KERN_DEBUG
"switched off addBA timer for tid %d \n", tid
);
1478 #endif /* CONFIG_MAC80211_HT_DEBUG */
1479 if (le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.status
)
1480 == WLAN_STATUS_SUCCESS
) {
1481 *state
|= HT_ADDBA_RECEIVED_MSK
;
1482 sta
->ampdu_mlme
.addba_req_num
[tid
] = 0;
1484 if (*state
== HT_AGG_STATE_OPERATIONAL
)
1485 ieee80211_wake_queue(hw
, sta
->tid_to_tx_q
[tid
]);
1487 spin_unlock_bh(&sta
->lock
);
1489 sta
->ampdu_mlme
.addba_req_num
[tid
]++;
1490 /* this will allow the state check in stop_BA_session */
1491 *state
= HT_AGG_STATE_OPERATIONAL
;
1492 spin_unlock_bh(&sta
->lock
);
1493 ieee80211_stop_tx_ba_session(hw
, sta
->addr
, tid
,
1494 WLAN_BACK_INITIATOR
);
1501 void ieee80211_send_delba(struct net_device
*dev
, const u8
*da
, u16 tid
,
1502 u16 initiator
, u16 reason_code
)
1504 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1505 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1506 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1507 struct sk_buff
*skb
;
1508 struct ieee80211_mgmt
*mgmt
;
1511 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
);
1514 printk(KERN_ERR
"%s: failed to allocate buffer "
1515 "for delba frame\n", dev
->name
);
1519 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1520 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1521 memset(mgmt
, 0, 24);
1522 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1523 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1524 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1525 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1527 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1528 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1529 IEEE80211_STYPE_ACTION
);
1531 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.delba
));
1533 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1534 mgmt
->u
.action
.u
.delba
.action_code
= WLAN_ACTION_DELBA
;
1535 params
= (u16
)(initiator
<< 11); /* bit 11 initiator */
1536 params
|= (u16
)(tid
<< 12); /* bit 15:12 TID number */
1538 mgmt
->u
.action
.u
.delba
.params
= cpu_to_le16(params
);
1539 mgmt
->u
.action
.u
.delba
.reason_code
= cpu_to_le16(reason_code
);
1541 ieee80211_sta_tx(dev
, skb
, 0);
1544 void ieee80211_send_bar(struct net_device
*dev
, u8
*ra
, u16 tid
, u16 ssn
)
1546 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1547 struct sk_buff
*skb
;
1548 struct ieee80211_bar
*bar
;
1549 u16 bar_control
= 0;
1551 skb
= dev_alloc_skb(sizeof(*bar
) + local
->hw
.extra_tx_headroom
);
1553 printk(KERN_ERR
"%s: failed to allocate buffer for "
1554 "bar frame\n", dev
->name
);
1557 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1558 bar
= (struct ieee80211_bar
*)skb_put(skb
, sizeof(*bar
));
1559 memset(bar
, 0, sizeof(*bar
));
1560 bar
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_CTL
,
1561 IEEE80211_STYPE_BACK_REQ
);
1562 memcpy(bar
->ra
, ra
, ETH_ALEN
);
1563 memcpy(bar
->ta
, dev
->dev_addr
, ETH_ALEN
);
1564 bar_control
|= (u16
)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL
;
1565 bar_control
|= (u16
)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA
;
1566 bar_control
|= (u16
)(tid
<< 12);
1567 bar
->control
= cpu_to_le16(bar_control
);
1568 bar
->start_seq_num
= cpu_to_le16(ssn
);
1570 ieee80211_sta_tx(dev
, skb
, 0);
1573 void ieee80211_sta_stop_rx_ba_session(struct net_device
*dev
, u8
*ra
, u16 tid
,
1574 u16 initiator
, u16 reason
)
1576 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1577 struct ieee80211_hw
*hw
= &local
->hw
;
1578 struct sta_info
*sta
;
1580 DECLARE_MAC_BUF(mac
);
1584 sta
= sta_info_get(local
, ra
);
1590 /* check if TID is in operational state */
1591 spin_lock_bh(&sta
->lock
);
1592 if (sta
->ampdu_mlme
.tid_state_rx
[tid
]
1593 != HT_AGG_STATE_OPERATIONAL
) {
1594 spin_unlock_bh(&sta
->lock
);
1598 sta
->ampdu_mlme
.tid_state_rx
[tid
] =
1599 HT_AGG_STATE_REQ_STOP_BA_MSK
|
1600 (initiator
<< HT_AGG_STATE_INITIATOR_SHIFT
);
1601 spin_unlock_bh(&sta
->lock
);
1603 /* stop HW Rx aggregation. ampdu_action existence
1604 * already verified in session init so we add the BUG_ON */
1605 BUG_ON(!local
->ops
->ampdu_action
);
1607 #ifdef CONFIG_MAC80211_HT_DEBUG
1608 printk(KERN_DEBUG
"Rx BA session stop requested for %s tid %u\n",
1609 print_mac(mac
, ra
), tid
);
1610 #endif /* CONFIG_MAC80211_HT_DEBUG */
1612 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_STOP
,
1615 printk(KERN_DEBUG
"HW problem - can not stop rx "
1616 "aggregation for tid %d\n", tid
);
1618 /* shutdown timer has not expired */
1619 if (initiator
!= WLAN_BACK_TIMER
)
1620 del_timer_sync(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1622 /* check if this is a self generated aggregation halt */
1623 if (initiator
== WLAN_BACK_RECIPIENT
|| initiator
== WLAN_BACK_TIMER
)
1624 ieee80211_send_delba(dev
, ra
, tid
, 0, reason
);
1626 /* free the reordering buffer */
1627 for (i
= 0; i
< sta
->ampdu_mlme
.tid_rx
[tid
]->buf_size
; i
++) {
1628 if (sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]) {
1629 /* release the reordered frames */
1630 dev_kfree_skb(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]);
1631 sta
->ampdu_mlme
.tid_rx
[tid
]->stored_mpdu_num
--;
1632 sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
] = NULL
;
1635 /* free resources */
1636 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
);
1637 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1638 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1639 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_IDLE
;
1645 static void ieee80211_sta_process_delba(struct net_device
*dev
,
1646 struct ieee80211_mgmt
*mgmt
, size_t len
)
1648 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1649 struct sta_info
*sta
;
1652 DECLARE_MAC_BUF(mac
);
1656 sta
= sta_info_get(local
, mgmt
->sa
);
1662 params
= le16_to_cpu(mgmt
->u
.action
.u
.delba
.params
);
1663 tid
= (params
& IEEE80211_DELBA_PARAM_TID_MASK
) >> 12;
1664 initiator
= (params
& IEEE80211_DELBA_PARAM_INITIATOR_MASK
) >> 11;
1666 #ifdef CONFIG_MAC80211_HT_DEBUG
1667 if (net_ratelimit())
1668 printk(KERN_DEBUG
"delba from %s (%s) tid %d reason code %d\n",
1669 print_mac(mac
, mgmt
->sa
),
1670 initiator
? "initiator" : "recipient", tid
,
1671 mgmt
->u
.action
.u
.delba
.reason_code
);
1672 #endif /* CONFIG_MAC80211_HT_DEBUG */
1674 if (initiator
== WLAN_BACK_INITIATOR
)
1675 ieee80211_sta_stop_rx_ba_session(dev
, sta
->addr
, tid
,
1676 WLAN_BACK_INITIATOR
, 0);
1677 else { /* WLAN_BACK_RECIPIENT */
1678 spin_lock_bh(&sta
->lock
);
1679 sta
->ampdu_mlme
.tid_state_tx
[tid
] =
1680 HT_AGG_STATE_OPERATIONAL
;
1681 spin_unlock_bh(&sta
->lock
);
1682 ieee80211_stop_tx_ba_session(&local
->hw
, sta
->addr
, tid
,
1683 WLAN_BACK_RECIPIENT
);
1689 * After sending add Block Ack request we activated a timer until
1690 * add Block Ack response will arrive from the recipient.
1691 * If this timer expires sta_addba_resp_timer_expired will be executed.
1693 void sta_addba_resp_timer_expired(unsigned long data
)
1695 /* not an elegant detour, but there is no choice as the timer passes
1696 * only one argument, and both sta_info and TID are needed, so init
1697 * flow in sta_info_create gives the TID as data, while the timer_to_id
1698 * array gives the sta through container_of */
1699 u16 tid
= *(u8
*)data
;
1700 struct sta_info
*temp_sta
= container_of((void *)data
,
1701 struct sta_info
, timer_to_tid
[tid
]);
1703 struct ieee80211_local
*local
= temp_sta
->local
;
1704 struct ieee80211_hw
*hw
= &local
->hw
;
1705 struct sta_info
*sta
;
1710 sta
= sta_info_get(local
, temp_sta
->addr
);
1716 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1717 /* check if the TID waits for addBA response */
1718 spin_lock_bh(&sta
->lock
);
1719 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1720 spin_unlock_bh(&sta
->lock
);
1721 *state
= HT_AGG_STATE_IDLE
;
1722 #ifdef CONFIG_MAC80211_HT_DEBUG
1723 printk(KERN_DEBUG
"timer expired on tid %d but we are not "
1724 "expecting addBA response there", tid
);
1726 goto timer_expired_exit
;
1729 #ifdef CONFIG_MAC80211_HT_DEBUG
1730 printk(KERN_DEBUG
"addBA response timer expired on tid %d\n", tid
);
1733 /* go through the state check in stop_BA_session */
1734 *state
= HT_AGG_STATE_OPERATIONAL
;
1735 spin_unlock_bh(&sta
->lock
);
1736 ieee80211_stop_tx_ba_session(hw
, temp_sta
->addr
, tid
,
1737 WLAN_BACK_INITIATOR
);
1744 * After accepting the AddBA Request we activated a timer,
1745 * resetting it after each frame that arrives from the originator.
1746 * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
1748 static void sta_rx_agg_session_timer_expired(unsigned long data
)
1750 /* not an elegant detour, but there is no choice as the timer passes
1751 * only one argument, and various sta_info are needed here, so init
1752 * flow in sta_info_create gives the TID as data, while the timer_to_id
1753 * array gives the sta through container_of */
1754 u8
*ptid
= (u8
*)data
;
1755 u8
*timer_to_id
= ptid
- *ptid
;
1756 struct sta_info
*sta
= container_of(timer_to_id
, struct sta_info
,
1759 #ifdef CONFIG_MAC80211_HT_DEBUG
1760 printk(KERN_DEBUG
"rx session timer expired on tid %d\n", (u16
)*ptid
);
1762 ieee80211_sta_stop_rx_ba_session(sta
->sdata
->dev
, sta
->addr
,
1763 (u16
)*ptid
, WLAN_BACK_TIMER
,
1764 WLAN_REASON_QSTA_TIMEOUT
);
1767 void ieee80211_sta_tear_down_BA_sessions(struct net_device
*dev
, u8
*addr
)
1769 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1772 for (i
= 0; i
< STA_TID_NUM
; i
++) {
1773 ieee80211_stop_tx_ba_session(&local
->hw
, addr
, i
,
1774 WLAN_BACK_INITIATOR
);
1775 ieee80211_sta_stop_rx_ba_session(dev
, addr
, i
,
1776 WLAN_BACK_RECIPIENT
,
1777 WLAN_REASON_QSTA_LEAVE_QBSS
);
1781 static void ieee80211_send_refuse_measurement_request(struct net_device
*dev
,
1782 struct ieee80211_msrment_ie
*request_ie
,
1783 const u8
*da
, const u8
*bssid
,
1786 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1787 struct sk_buff
*skb
;
1788 struct ieee80211_mgmt
*msr_report
;
1790 skb
= dev_alloc_skb(sizeof(*msr_report
) + local
->hw
.extra_tx_headroom
+
1791 sizeof(struct ieee80211_msrment_ie
));
1794 printk(KERN_ERR
"%s: failed to allocate buffer for "
1795 "measurement report frame\n", dev
->name
);
1799 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1800 msr_report
= (struct ieee80211_mgmt
*)skb_put(skb
, 24);
1801 memset(msr_report
, 0, 24);
1802 memcpy(msr_report
->da
, da
, ETH_ALEN
);
1803 memcpy(msr_report
->sa
, dev
->dev_addr
, ETH_ALEN
);
1804 memcpy(msr_report
->bssid
, bssid
, ETH_ALEN
);
1805 msr_report
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1806 IEEE80211_STYPE_ACTION
);
1808 skb_put(skb
, 1 + sizeof(msr_report
->u
.action
.u
.measurement
));
1809 msr_report
->u
.action
.category
= WLAN_CATEGORY_SPECTRUM_MGMT
;
1810 msr_report
->u
.action
.u
.measurement
.action_code
=
1811 WLAN_ACTION_SPCT_MSR_RPRT
;
1812 msr_report
->u
.action
.u
.measurement
.dialog_token
= dialog_token
;
1814 msr_report
->u
.action
.u
.measurement
.element_id
= WLAN_EID_MEASURE_REPORT
;
1815 msr_report
->u
.action
.u
.measurement
.length
=
1816 sizeof(struct ieee80211_msrment_ie
);
1818 memset(&msr_report
->u
.action
.u
.measurement
.msr_elem
, 0,
1819 sizeof(struct ieee80211_msrment_ie
));
1820 msr_report
->u
.action
.u
.measurement
.msr_elem
.token
= request_ie
->token
;
1821 msr_report
->u
.action
.u
.measurement
.msr_elem
.mode
|=
1822 IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED
;
1823 msr_report
->u
.action
.u
.measurement
.msr_elem
.type
= request_ie
->type
;
1825 ieee80211_sta_tx(dev
, skb
, 0);
1828 static void ieee80211_sta_process_measurement_req(struct net_device
*dev
,
1829 struct ieee80211_mgmt
*mgmt
,
1833 * Ignoring measurement request is spec violation.
1834 * Mandatory measurements must be reported optional
1835 * measurements might be refused or reported incapable
1836 * For now just refuse
1837 * TODO: Answer basic measurement as unmeasured
1839 ieee80211_send_refuse_measurement_request(dev
,
1840 &mgmt
->u
.action
.u
.measurement
.msr_elem
,
1841 mgmt
->sa
, mgmt
->bssid
,
1842 mgmt
->u
.action
.u
.measurement
.dialog_token
);
1846 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1847 struct ieee80211_if_sta
*ifsta
,
1848 struct ieee80211_mgmt
*mgmt
,
1851 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1852 u16 auth_alg
, auth_transaction
, status_code
;
1853 DECLARE_MAC_BUF(mac
);
1855 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1856 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
1862 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1863 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0)
1866 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1867 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
1870 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1871 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1872 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1874 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
1876 * IEEE 802.11 standard does not require authentication in IBSS
1877 * networks and most implementations do not seem to use it.
1878 * However, try to reply to authentication attempts if someone
1879 * has actually implemented this.
1881 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1)
1883 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1886 if (auth_alg
!= ifsta
->auth_alg
||
1887 auth_transaction
!= ifsta
->auth_transaction
)
1890 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1891 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1893 const int num_algs
= ARRAY_SIZE(algs
);
1895 algs
[0] = algs
[1] = algs
[2] = 0xff;
1896 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1897 algs
[0] = WLAN_AUTH_OPEN
;
1898 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1899 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1900 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1901 algs
[2] = WLAN_AUTH_LEAP
;
1902 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1904 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1908 for (i
= 0; i
< num_algs
; i
++) {
1910 if (pos
>= num_algs
)
1912 if (algs
[pos
] == ifsta
->auth_alg
||
1915 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1916 !ieee80211_sta_wep_configured(dev
))
1918 ifsta
->auth_alg
= algs
[pos
];
1925 switch (ifsta
->auth_alg
) {
1926 case WLAN_AUTH_OPEN
:
1927 case WLAN_AUTH_LEAP
:
1928 ieee80211_auth_completed(dev
, ifsta
);
1930 case WLAN_AUTH_SHARED_KEY
:
1931 if (ifsta
->auth_transaction
== 4)
1932 ieee80211_auth_completed(dev
, ifsta
);
1934 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1940 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1941 struct ieee80211_if_sta
*ifsta
,
1942 struct ieee80211_mgmt
*mgmt
,
1946 DECLARE_MAC_BUF(mac
);
1951 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
))
1954 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1956 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
)
1957 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1959 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1960 ifsta
->state
== IEEE80211_ASSOCIATE
||
1961 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1962 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1963 mod_timer(&ifsta
->timer
, jiffies
+
1964 IEEE80211_RETRY_AUTH_INTERVAL
);
1967 ieee80211_set_disassoc(dev
, ifsta
, 1);
1968 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1972 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1973 struct ieee80211_if_sta
*ifsta
,
1974 struct ieee80211_mgmt
*mgmt
,
1978 DECLARE_MAC_BUF(mac
);
1983 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
))
1986 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1988 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1989 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1991 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1992 ifsta
->state
= IEEE80211_ASSOCIATE
;
1993 mod_timer(&ifsta
->timer
, jiffies
+
1994 IEEE80211_RETRY_AUTH_INTERVAL
);
1997 ieee80211_set_disassoc(dev
, ifsta
, 0);
2001 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
2002 struct ieee80211_if_sta
*ifsta
,
2003 struct ieee80211_mgmt
*mgmt
,
2007 struct ieee80211_local
*local
= sdata
->local
;
2008 struct net_device
*dev
= sdata
->dev
;
2009 struct ieee80211_supported_band
*sband
;
2010 struct sta_info
*sta
;
2011 u64 rates
, basic_rates
;
2012 u16 capab_info
, status_code
, aid
;
2013 struct ieee802_11_elems elems
;
2014 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
2017 DECLARE_MAC_BUF(mac
);
2018 bool have_higher_than_11mbit
= false;
2020 /* AssocResp and ReassocResp have identical structure, so process both
2021 * of them in this function. */
2023 if (ifsta
->state
!= IEEE80211_ASSOCIATE
)
2029 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0)
2032 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
2033 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
2034 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
2036 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
2037 "status=%d aid=%d)\n",
2038 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
2039 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
2041 if (status_code
!= WLAN_STATUS_SUCCESS
) {
2042 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
2043 dev
->name
, status_code
);
2044 /* if this was a reassociation, ensure we try a "full"
2045 * association next time. This works around some broken APs
2046 * which do not correctly reject reassociation requests. */
2047 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
2051 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
2052 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
2053 "set\n", dev
->name
, aid
);
2054 aid
&= ~(BIT(15) | BIT(14));
2056 pos
= mgmt
->u
.assoc_resp
.variable
;
2057 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
2059 if (!elems
.supp_rates
) {
2060 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
2065 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
2067 ifsta
->ap_capab
= capab_info
;
2069 kfree(ifsta
->assocresp_ies
);
2070 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
2071 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
2072 if (ifsta
->assocresp_ies
)
2073 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
2077 /* Add STA entry for the AP */
2078 sta
= sta_info_get(local
, ifsta
->bssid
);
2080 struct ieee80211_sta_bss
*bss
;
2083 sta
= sta_info_alloc(sdata
, ifsta
->bssid
, GFP_ATOMIC
);
2085 printk(KERN_DEBUG
"%s: failed to alloc STA entry for"
2086 " the AP\n", dev
->name
);
2090 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
2091 local
->hw
.conf
.channel
->center_freq
,
2092 ifsta
->ssid
, ifsta
->ssid_len
);
2094 sta
->last_signal
= bss
->signal
;
2095 sta
->last_qual
= bss
->qual
;
2096 sta
->last_noise
= bss
->noise
;
2097 ieee80211_rx_bss_put(local
, bss
);
2100 err
= sta_info_insert(sta
);
2102 printk(KERN_DEBUG
"%s: failed to insert STA entry for"
2103 " the AP (error %d)\n", dev
->name
, err
);
2110 * FIXME: Do we really need to update the sta_info's information here?
2111 * We already know about the AP (we found it in our list) so it
2112 * should already be filled with the right info, no?
2113 * As is stands, all this is racy because typically we assume
2114 * the information that is filled in here (except flags) doesn't
2115 * change while a STA structure is alive. As such, it should move
2116 * to between the sta_info_alloc() and sta_info_insert() above.
2119 set_sta_flags(sta
, WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
|
2120 WLAN_STA_AUTHORIZED
);
2124 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2126 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
2127 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
2130 have_higher_than_11mbit
= true;
2132 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2133 if (sband
->bitrates
[j
].bitrate
== rate
)
2135 if (elems
.supp_rates
[i
] & 0x80)
2136 basic_rates
|= BIT(j
);
2140 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
2141 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
2144 have_higher_than_11mbit
= true;
2146 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2147 if (sband
->bitrates
[j
].bitrate
== rate
)
2149 if (elems
.ext_supp_rates
[i
] & 0x80)
2150 basic_rates
|= BIT(j
);
2154 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] = rates
;
2155 sdata
->basic_rates
= basic_rates
;
2157 /* cf. IEEE 802.11 9.2.12 */
2158 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
2159 have_higher_than_11mbit
)
2160 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
2162 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
2164 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&& elems
.wmm_param
&&
2165 (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2166 struct ieee80211_ht_bss_info bss_info
;
2167 ieee80211_ht_cap_ie_to_ht_info(
2168 (struct ieee80211_ht_cap
*)
2169 elems
.ht_cap_elem
, &sta
->ht_info
);
2170 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2171 (struct ieee80211_ht_addt_info
*)
2172 elems
.ht_info_elem
, &bss_info
);
2173 ieee80211_handle_ht(local
, 1, &sta
->ht_info
, &bss_info
);
2176 rate_control_rate_init(sta
, local
);
2178 if (elems
.wmm_param
) {
2179 set_sta_flags(sta
, WLAN_STA_WME
);
2181 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2182 elems
.wmm_param_len
);
2186 /* set AID and assoc capability,
2187 * ieee80211_set_associated() will tell the driver */
2188 bss_conf
->aid
= aid
;
2189 bss_conf
->assoc_capability
= capab_info
;
2190 ieee80211_set_associated(dev
, ifsta
, 1);
2192 ieee80211_associated(dev
, ifsta
);
2196 /* Caller must hold local->sta_bss_lock */
2197 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
2198 struct ieee80211_sta_bss
*bss
)
2200 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2203 if (bss_mesh_cfg(bss
))
2204 hash_idx
= mesh_id_hash(bss_mesh_id(bss
),
2205 bss_mesh_id_len(bss
));
2207 hash_idx
= STA_HASH(bss
->bssid
);
2209 bss
->hnext
= local
->sta_bss_hash
[hash_idx
];
2210 local
->sta_bss_hash
[hash_idx
] = bss
;
2214 /* Caller must hold local->sta_bss_lock */
2215 static void __ieee80211_rx_bss_hash_del(struct ieee80211_local
*local
,
2216 struct ieee80211_sta_bss
*bss
)
2218 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
2219 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
2223 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
2226 prev
->hnext
= bss
->hnext
;
2235 static struct ieee80211_sta_bss
*
2236 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int freq
,
2237 u8
*ssid
, u8 ssid_len
)
2239 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2240 struct ieee80211_sta_bss
*bss
;
2242 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2245 atomic_inc(&bss
->users
);
2246 atomic_inc(&bss
->users
);
2247 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
2249 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
2250 memcpy(bss
->ssid
, ssid
, ssid_len
);
2251 bss
->ssid_len
= ssid_len
;
2254 spin_lock_bh(&local
->sta_bss_lock
);
2255 /* TODO: order by RSSI? */
2256 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2257 __ieee80211_rx_bss_hash_add(dev
, bss
);
2258 spin_unlock_bh(&local
->sta_bss_lock
);
2262 static struct ieee80211_sta_bss
*
2263 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
2264 u8
*ssid
, u8 ssid_len
)
2266 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2267 struct ieee80211_sta_bss
*bss
;
2269 spin_lock_bh(&local
->sta_bss_lock
);
2270 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
2272 if (!bss_mesh_cfg(bss
) &&
2273 !memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
2274 bss
->freq
== freq
&&
2275 bss
->ssid_len
== ssid_len
&&
2276 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
2277 atomic_inc(&bss
->users
);
2282 spin_unlock_bh(&local
->sta_bss_lock
);
2286 #ifdef CONFIG_MAC80211_MESH
2287 static struct ieee80211_sta_bss
*
2288 ieee80211_rx_mesh_bss_get(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2289 u8
*mesh_cfg
, int freq
)
2291 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2292 struct ieee80211_sta_bss
*bss
;
2294 spin_lock_bh(&local
->sta_bss_lock
);
2295 bss
= local
->sta_bss_hash
[mesh_id_hash(mesh_id
, mesh_id_len
)];
2297 if (bss_mesh_cfg(bss
) &&
2298 !memcmp(bss_mesh_cfg(bss
), mesh_cfg
, MESH_CFG_CMP_LEN
) &&
2299 bss
->freq
== freq
&&
2300 mesh_id_len
== bss
->mesh_id_len
&&
2301 (mesh_id_len
== 0 || !memcmp(bss
->mesh_id
, mesh_id
,
2303 atomic_inc(&bss
->users
);
2308 spin_unlock_bh(&local
->sta_bss_lock
);
2312 static struct ieee80211_sta_bss
*
2313 ieee80211_rx_mesh_bss_add(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2314 u8
*mesh_cfg
, int mesh_config_len
, int freq
)
2316 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2317 struct ieee80211_sta_bss
*bss
;
2319 if (mesh_config_len
!= MESH_CFG_LEN
)
2322 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2326 bss
->mesh_cfg
= kmalloc(MESH_CFG_CMP_LEN
, GFP_ATOMIC
);
2327 if (!bss
->mesh_cfg
) {
2332 if (mesh_id_len
&& mesh_id_len
<= IEEE80211_MAX_MESH_ID_LEN
) {
2333 bss
->mesh_id
= kmalloc(mesh_id_len
, GFP_ATOMIC
);
2334 if (!bss
->mesh_id
) {
2335 kfree(bss
->mesh_cfg
);
2339 memcpy(bss
->mesh_id
, mesh_id
, mesh_id_len
);
2342 atomic_inc(&bss
->users
);
2343 atomic_inc(&bss
->users
);
2344 memcpy(bss
->mesh_cfg
, mesh_cfg
, MESH_CFG_CMP_LEN
);
2345 bss
->mesh_id_len
= mesh_id_len
;
2347 spin_lock_bh(&local
->sta_bss_lock
);
2348 /* TODO: order by RSSI? */
2349 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2350 __ieee80211_rx_bss_hash_add(dev
, bss
);
2351 spin_unlock_bh(&local
->sta_bss_lock
);
2356 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
2362 kfree(bss
->ht_add_ie
);
2363 kfree(bss_mesh_id(bss
));
2364 kfree(bss_mesh_cfg(bss
));
2369 static void ieee80211_rx_bss_put(struct ieee80211_local
*local
,
2370 struct ieee80211_sta_bss
*bss
)
2373 if (!atomic_dec_and_lock(&bss
->users
, &local
->sta_bss_lock
)) {
2378 __ieee80211_rx_bss_hash_del(local
, bss
);
2379 list_del(&bss
->list
);
2380 spin_unlock_bh(&local
->sta_bss_lock
);
2381 ieee80211_rx_bss_free(bss
);
2385 void ieee80211_rx_bss_list_init(struct ieee80211_local
*local
)
2387 spin_lock_init(&local
->sta_bss_lock
);
2388 INIT_LIST_HEAD(&local
->sta_bss_list
);
2392 void ieee80211_rx_bss_list_deinit(struct ieee80211_local
*local
)
2394 struct ieee80211_sta_bss
*bss
, *tmp
;
2396 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
2397 ieee80211_rx_bss_put(local
, bss
);
2401 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2402 struct ieee80211_if_sta
*ifsta
,
2403 struct ieee80211_sta_bss
*bss
)
2405 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2406 int res
, rates
, i
, j
;
2407 struct sk_buff
*skb
;
2408 struct ieee80211_mgmt
*mgmt
;
2410 struct ieee80211_sub_if_data
*sdata
;
2411 struct ieee80211_supported_band
*sband
;
2412 union iwreq_data wrqu
;
2414 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2416 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2418 /* Remove possible STA entries from other IBSS networks. */
2419 sta_info_flush_delayed(sdata
);
2421 if (local
->ops
->reset_tsf
) {
2422 /* Reset own TSF to allow time synchronization work. */
2423 local
->ops
->reset_tsf(local_to_hw(local
));
2425 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2426 res
= ieee80211_if_config(sdata
, IEEE80211_IFCC_BSSID
);
2430 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2432 sdata
->drop_unencrypted
= bss
->capability
&
2433 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2435 res
= ieee80211_set_freq(dev
, bss
->freq
);
2440 /* Build IBSS probe response */
2441 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2443 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2445 mgmt
= (struct ieee80211_mgmt
*)
2446 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2447 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2448 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2449 IEEE80211_STYPE_PROBE_RESP
);
2450 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2451 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2452 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2453 mgmt
->u
.beacon
.beacon_int
=
2454 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2455 mgmt
->u
.beacon
.timestamp
= cpu_to_le64(bss
->timestamp
);
2456 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2458 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2459 *pos
++ = WLAN_EID_SSID
;
2460 *pos
++ = ifsta
->ssid_len
;
2461 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2463 rates
= bss
->supp_rates_len
;
2466 pos
= skb_put(skb
, 2 + rates
);
2467 *pos
++ = WLAN_EID_SUPP_RATES
;
2469 memcpy(pos
, bss
->supp_rates
, rates
);
2471 if (bss
->band
== IEEE80211_BAND_2GHZ
) {
2472 pos
= skb_put(skb
, 2 + 1);
2473 *pos
++ = WLAN_EID_DS_PARAMS
;
2475 *pos
++ = ieee80211_frequency_to_channel(bss
->freq
);
2478 pos
= skb_put(skb
, 2 + 2);
2479 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2481 /* FIX: set ATIM window based on scan results */
2485 if (bss
->supp_rates_len
> 8) {
2486 rates
= bss
->supp_rates_len
- 8;
2487 pos
= skb_put(skb
, 2 + rates
);
2488 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2490 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2493 ifsta
->probe_resp
= skb
;
2495 ieee80211_if_config(sdata
, IEEE80211_IFCC_BEACON
);
2499 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2500 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2501 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2502 for (j
= 0; j
< sband
->n_bitrates
; j
++)
2503 if (sband
->bitrates
[j
].bitrate
== bitrate
)
2506 ifsta
->supp_rates_bits
[local
->hw
.conf
.channel
->band
] = rates
;
2508 ieee80211_sta_def_wmm_params(dev
, bss
, 1);
2510 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2511 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2513 memset(&wrqu
, 0, sizeof(wrqu
));
2514 memcpy(wrqu
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
2515 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
2520 u64
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
2521 struct ieee802_11_elems
*elems
,
2522 enum ieee80211_band band
)
2524 struct ieee80211_supported_band
*sband
;
2525 struct ieee80211_rate
*bitrates
;
2529 sband
= local
->hw
.wiphy
->bands
[band
];
2533 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2536 bitrates
= sband
->bitrates
;
2537 num_rates
= sband
->n_bitrates
;
2539 for (i
= 0; i
< elems
->supp_rates_len
+
2540 elems
->ext_supp_rates_len
; i
++) {
2543 if (i
< elems
->supp_rates_len
)
2544 rate
= elems
->supp_rates
[i
];
2545 else if (elems
->ext_supp_rates
)
2546 rate
= elems
->ext_supp_rates
2547 [i
- elems
->supp_rates_len
];
2548 own_rate
= 5 * (rate
& 0x7f);
2549 for (j
= 0; j
< num_rates
; j
++)
2550 if (bitrates
[j
].bitrate
== own_rate
)
2551 supp_rates
|= BIT(j
);
2557 static void ieee80211_rx_bss_info(struct net_device
*dev
,
2558 struct ieee80211_mgmt
*mgmt
,
2560 struct ieee80211_rx_status
*rx_status
,
2561 struct ieee802_11_elems
*elems
,
2564 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2566 struct ieee80211_sta_bss
*bss
;
2567 struct sta_info
*sta
;
2568 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2569 u64 beacon_timestamp
, rx_timestamp
;
2570 struct ieee80211_channel
*channel
;
2571 DECLARE_MAC_BUF(mac
);
2572 DECLARE_MAC_BUF(mac2
);
2574 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
2575 return; /* ignore ProbeResp to foreign address */
2577 beacon_timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
2579 if (ieee80211_vif_is_mesh(&sdata
->vif
) && elems
->mesh_id
&&
2580 elems
->mesh_config
&& mesh_matches_local(elems
, dev
)) {
2581 u64 rates
= ieee80211_sta_get_rates(local
, elems
,
2584 mesh_neighbour_update(mgmt
->sa
, rates
, dev
,
2585 mesh_peer_accepts_plinks(elems
, dev
));
2590 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& elems
->supp_rates
&&
2591 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
2592 (sta
= sta_info_get(local
, mgmt
->sa
))) {
2594 u64 supp_rates
= ieee80211_sta_get_rates(local
, elems
,
2597 prev_rates
= sta
->supp_rates
[rx_status
->band
];
2598 sta
->supp_rates
[rx_status
->band
] &= supp_rates
;
2599 if (sta
->supp_rates
[rx_status
->band
] == 0) {
2600 /* No matching rates - this should not really happen.
2601 * Make sure that at least one rate is marked
2602 * supported to avoid issues with TX rate ctrl. */
2603 sta
->supp_rates
[rx_status
->band
] =
2604 sdata
->u
.sta
.supp_rates_bits
[rx_status
->band
];
2610 if (elems
->ds_params
&& elems
->ds_params_len
== 1)
2611 freq
= ieee80211_channel_to_frequency(elems
->ds_params
[0]);
2613 freq
= rx_status
->freq
;
2615 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
2617 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
2620 #ifdef CONFIG_MAC80211_MESH
2621 if (elems
->mesh_config
)
2622 bss
= ieee80211_rx_mesh_bss_get(dev
, elems
->mesh_id
,
2623 elems
->mesh_id_len
, elems
->mesh_config
, freq
);
2626 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, freq
,
2627 elems
->ssid
, elems
->ssid_len
);
2629 #ifdef CONFIG_MAC80211_MESH
2630 if (elems
->mesh_config
)
2631 bss
= ieee80211_rx_mesh_bss_add(dev
, elems
->mesh_id
,
2632 elems
->mesh_id_len
, elems
->mesh_config
,
2633 elems
->mesh_config_len
, freq
);
2636 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, freq
,
2637 elems
->ssid
, elems
->ssid_len
);
2642 /* TODO: order by RSSI? */
2643 spin_lock_bh(&local
->sta_bss_lock
);
2644 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
2645 spin_unlock_bh(&local
->sta_bss_lock
);
2649 /* save the ERP value so that it is available at association time */
2650 if (elems
->erp_info
&& elems
->erp_info_len
>= 1) {
2651 bss
->erp_value
= elems
->erp_info
[0];
2652 bss
->has_erp_value
= 1;
2655 if (elems
->ht_cap_elem
&&
2656 (!bss
->ht_ie
|| bss
->ht_ie_len
!= elems
->ht_cap_elem_len
||
2657 memcmp(bss
->ht_ie
, elems
->ht_cap_elem
, elems
->ht_cap_elem_len
))) {
2659 bss
->ht_ie
= kmalloc(elems
->ht_cap_elem_len
+ 2, GFP_ATOMIC
);
2661 memcpy(bss
->ht_ie
, elems
->ht_cap_elem
- 2,
2662 elems
->ht_cap_elem_len
+ 2);
2663 bss
->ht_ie_len
= elems
->ht_cap_elem_len
+ 2;
2666 } else if (!elems
->ht_cap_elem
&& bss
->ht_ie
) {
2672 if (elems
->ht_info_elem
&&
2674 bss
->ht_add_ie_len
!= elems
->ht_info_elem_len
||
2675 memcmp(bss
->ht_add_ie
, elems
->ht_info_elem
,
2676 elems
->ht_info_elem_len
))) {
2677 kfree(bss
->ht_add_ie
);
2679 kmalloc(elems
->ht_info_elem_len
+ 2, GFP_ATOMIC
);
2680 if (bss
->ht_add_ie
) {
2681 memcpy(bss
->ht_add_ie
, elems
->ht_info_elem
- 2,
2682 elems
->ht_info_elem_len
+ 2);
2683 bss
->ht_add_ie_len
= elems
->ht_info_elem_len
+ 2;
2685 bss
->ht_add_ie_len
= 0;
2686 } else if (!elems
->ht_info_elem
&& bss
->ht_add_ie
) {
2687 kfree(bss
->ht_add_ie
);
2688 bss
->ht_add_ie
= NULL
;
2689 bss
->ht_add_ie_len
= 0;
2692 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
2693 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2695 bss
->supp_rates_len
= 0;
2696 if (elems
->supp_rates
) {
2697 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2698 if (clen
> elems
->supp_rates_len
)
2699 clen
= elems
->supp_rates_len
;
2700 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
->supp_rates
,
2702 bss
->supp_rates_len
+= clen
;
2704 if (elems
->ext_supp_rates
) {
2705 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2706 if (clen
> elems
->ext_supp_rates_len
)
2707 clen
= elems
->ext_supp_rates_len
;
2708 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
2709 elems
->ext_supp_rates
, clen
);
2710 bss
->supp_rates_len
+= clen
;
2713 bss
->band
= rx_status
->band
;
2715 bss
->timestamp
= beacon_timestamp
;
2716 bss
->last_update
= jiffies
;
2717 bss
->signal
= rx_status
->signal
;
2718 bss
->noise
= rx_status
->noise
;
2719 bss
->qual
= rx_status
->qual
;
2720 if (!beacon
&& !bss
->probe_resp
)
2721 bss
->probe_resp
= true;
2724 * In STA mode, the remaining parameters should not be overridden
2725 * by beacons because they're not necessarily accurate there.
2727 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
2728 bss
->probe_resp
&& beacon
) {
2729 ieee80211_rx_bss_put(local
, bss
);
2734 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
->wpa_len
||
2735 memcmp(bss
->wpa_ie
, elems
->wpa
, elems
->wpa_len
))) {
2737 bss
->wpa_ie
= kmalloc(elems
->wpa_len
+ 2, GFP_ATOMIC
);
2739 memcpy(bss
->wpa_ie
, elems
->wpa
- 2, elems
->wpa_len
+ 2);
2740 bss
->wpa_ie_len
= elems
->wpa_len
+ 2;
2742 bss
->wpa_ie_len
= 0;
2743 } else if (!elems
->wpa
&& bss
->wpa_ie
) {
2746 bss
->wpa_ie_len
= 0;
2750 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
->rsn_len
||
2751 memcmp(bss
->rsn_ie
, elems
->rsn
, elems
->rsn_len
))) {
2753 bss
->rsn_ie
= kmalloc(elems
->rsn_len
+ 2, GFP_ATOMIC
);
2755 memcpy(bss
->rsn_ie
, elems
->rsn
- 2, elems
->rsn_len
+ 2);
2756 bss
->rsn_ie_len
= elems
->rsn_len
+ 2;
2758 bss
->rsn_ie_len
= 0;
2759 } else if (!elems
->rsn
&& bss
->rsn_ie
) {
2762 bss
->rsn_ie_len
= 0;
2767 * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC
2771 * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia
2772 * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi
2773 * Alliance (September 1, 2004) is incorporated by reference herein.
2774 * The inclusion of the WMM Parameters in probe responses and
2775 * association responses is mandatory for WMM enabled networks. The
2776 * inclusion of the WMM Parameters in beacons, however, is optional.
2779 if (elems
->wmm_param
&&
2780 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
->wmm_param_len
||
2781 memcmp(bss
->wmm_ie
, elems
->wmm_param
, elems
->wmm_param_len
))) {
2783 bss
->wmm_ie
= kmalloc(elems
->wmm_param_len
+ 2, GFP_ATOMIC
);
2785 memcpy(bss
->wmm_ie
, elems
->wmm_param
- 2,
2786 elems
->wmm_param_len
+ 2);
2787 bss
->wmm_ie_len
= elems
->wmm_param_len
+ 2;
2789 bss
->wmm_ie_len
= 0;
2790 } else if (elems
->wmm_info
&&
2791 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
->wmm_info_len
||
2792 memcmp(bss
->wmm_ie
, elems
->wmm_info
,
2793 elems
->wmm_info_len
))) {
2794 /* As for certain AP's Fifth bit is not set in WMM IE in
2795 * beacon frames.So while parsing the beacon frame the
2796 * wmm_info structure is used instead of wmm_param.
2797 * wmm_info structure was never used to set bss->wmm_ie.
2798 * This code fixes this problem by copying the WME
2799 * information from wmm_info to bss->wmm_ie and enabling
2800 * n-band association.
2803 bss
->wmm_ie
= kmalloc(elems
->wmm_info_len
+ 2, GFP_ATOMIC
);
2805 memcpy(bss
->wmm_ie
, elems
->wmm_info
- 2,
2806 elems
->wmm_info_len
+ 2);
2807 bss
->wmm_ie_len
= elems
->wmm_info_len
+ 2;
2809 bss
->wmm_ie_len
= 0;
2810 } else if (!elems
->wmm_param
&& !elems
->wmm_info
&& bss
->wmm_ie
) {
2813 bss
->wmm_ie_len
= 0;
2816 /* check if we need to merge IBSS */
2817 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
2818 !local
->sta_sw_scanning
&& !local
->sta_hw_scanning
&&
2819 bss
->capability
& WLAN_CAPABILITY_IBSS
&&
2820 bss
->freq
== local
->oper_channel
->center_freq
&&
2821 elems
->ssid_len
== sdata
->u
.sta
.ssid_len
&&
2822 memcmp(elems
->ssid
, sdata
->u
.sta
.ssid
,
2823 sdata
->u
.sta
.ssid_len
) == 0) {
2824 if (rx_status
->flag
& RX_FLAG_TSFT
) {
2825 /* in order for correct IBSS merging we need mactime
2827 * since mactime is defined as the time the first data
2828 * symbol of the frame hits the PHY, and the timestamp
2829 * of the beacon is defined as "the time that the data
2830 * symbol containing the first bit of the timestamp is
2831 * transmitted to the PHY plus the transmitting STA’s
2832 * delays through its local PHY from the MAC-PHY
2833 * interface to its interface with the WM"
2834 * (802.11 11.1.2) - equals the time this bit arrives at
2835 * the receiver - we have to take into account the
2836 * offset between the two.
2837 * e.g: at 1 MBit that means mactime is 192 usec earlier
2838 * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
2840 int rate
= local
->hw
.wiphy
->bands
[rx_status
->band
]->
2841 bitrates
[rx_status
->rate_idx
].bitrate
;
2842 rx_timestamp
= rx_status
->mactime
+ (24 * 8 * 10 / rate
);
2843 } else if (local
&& local
->ops
&& local
->ops
->get_tsf
)
2844 /* second best option: get current TSF */
2845 rx_timestamp
= local
->ops
->get_tsf(local_to_hw(local
));
2847 /* can't merge without knowing the TSF */
2848 rx_timestamp
= -1LLU;
2849 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2850 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
2851 "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
2852 print_mac(mac
, mgmt
->sa
),
2853 print_mac(mac2
, mgmt
->bssid
),
2854 (unsigned long long)rx_timestamp
,
2855 (unsigned long long)beacon_timestamp
,
2856 (unsigned long long)(rx_timestamp
- beacon_timestamp
),
2858 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2859 if (beacon_timestamp
> rx_timestamp
) {
2860 #ifndef CONFIG_MAC80211_IBSS_DEBUG
2861 printk(KERN_DEBUG
"%s: beacon TSF higher than "
2862 "local TSF - IBSS merge with BSSID %s\n",
2863 dev
->name
, print_mac(mac
, mgmt
->bssid
));
2865 ieee80211_sta_join_ibss(dev
, &sdata
->u
.sta
, bss
);
2866 ieee80211_ibss_add_sta(dev
, NULL
,
2867 mgmt
->bssid
, mgmt
->sa
,
2868 BIT(rx_status
->rate_idx
));
2872 ieee80211_rx_bss_put(local
, bss
);
2876 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
2877 struct ieee80211_mgmt
*mgmt
,
2879 struct ieee80211_rx_status
*rx_status
)
2882 struct ieee802_11_elems elems
;
2884 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
2888 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
2891 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, &elems
, 0);
2895 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
2896 struct ieee80211_mgmt
*mgmt
,
2898 struct ieee80211_rx_status
*rx_status
)
2900 struct ieee80211_sub_if_data
*sdata
;
2901 struct ieee80211_if_sta
*ifsta
;
2903 struct ieee802_11_elems elems
;
2904 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2905 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
2908 /* Process beacon from the current BSS */
2909 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2913 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2915 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, &elems
, 1);
2917 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2918 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2920 ifsta
= &sdata
->u
.sta
;
2922 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
2923 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
2926 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2927 elems
.wmm_param_len
);
2929 /* Do not send changes to driver if we are scanning. This removes
2930 * requirement that driver's bss_info_changed function needs to be
2932 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
2935 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
2936 changed
|= ieee80211_handle_erp_ie(sdata
, elems
.erp_info
[0]);
2938 u16 capab
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2939 changed
|= ieee80211_handle_protect_preamb(sdata
, false,
2940 (capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
) != 0);
2943 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&&
2944 elems
.wmm_param
&& conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
2945 struct ieee80211_ht_bss_info bss_info
;
2947 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2948 (struct ieee80211_ht_addt_info
*)
2949 elems
.ht_info_elem
, &bss_info
);
2950 changed
|= ieee80211_handle_ht(local
, 1, &conf
->ht_conf
,
2954 ieee80211_bss_info_change_notify(sdata
, changed
);
2958 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
2959 struct ieee80211_if_sta
*ifsta
,
2960 struct ieee80211_mgmt
*mgmt
,
2962 struct ieee80211_rx_status
*rx_status
)
2964 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2965 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2967 struct sk_buff
*skb
;
2968 struct ieee80211_mgmt
*resp
;
2970 DECLARE_MAC_BUF(mac
);
2971 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2972 DECLARE_MAC_BUF(mac2
);
2973 DECLARE_MAC_BUF(mac3
);
2976 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
||
2977 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
2978 len
< 24 + 2 || !ifsta
->probe_resp
)
2981 if (local
->ops
->tx_last_beacon
)
2982 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
2986 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2987 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
2988 "%s (tx_last_beacon=%d)\n",
2989 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
2990 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
2991 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2993 if (!tx_last_beacon
)
2996 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
2997 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
3000 end
= ((u8
*) mgmt
) + len
;
3001 pos
= mgmt
->u
.probe_req
.variable
;
3002 if (pos
[0] != WLAN_EID_SSID
||
3003 pos
+ 2 + pos
[1] > end
) {
3004 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3005 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
3007 dev
->name
, print_mac(mac
, mgmt
->sa
));
3012 (pos
[1] != ifsta
->ssid_len
||
3013 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
3014 /* Ignore ProbeReq for foreign SSID */
3018 /* Reply with ProbeResp */
3019 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
3023 resp
= (struct ieee80211_mgmt
*) skb
->data
;
3024 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
3025 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3026 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
3027 dev
->name
, print_mac(mac
, resp
->da
));
3028 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3029 ieee80211_sta_tx(dev
, skb
, 0);
3032 static void ieee80211_rx_mgmt_action(struct net_device
*dev
,
3033 struct ieee80211_if_sta
*ifsta
,
3034 struct ieee80211_mgmt
*mgmt
,
3036 struct ieee80211_rx_status
*rx_status
)
3038 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3039 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3041 if (len
< IEEE80211_MIN_ACTION_SIZE
)
3044 switch (mgmt
->u
.action
.category
) {
3045 case WLAN_CATEGORY_SPECTRUM_MGMT
:
3046 if (local
->hw
.conf
.channel
->band
!= IEEE80211_BAND_5GHZ
)
3048 switch (mgmt
->u
.action
.u
.chan_switch
.action_code
) {
3049 case WLAN_ACTION_SPCT_MSR_REQ
:
3050 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3051 sizeof(mgmt
->u
.action
.u
.measurement
)))
3053 ieee80211_sta_process_measurement_req(dev
, mgmt
, len
);
3057 case WLAN_CATEGORY_BACK
:
3058 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
3059 case WLAN_ACTION_ADDBA_REQ
:
3060 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3061 sizeof(mgmt
->u
.action
.u
.addba_req
)))
3063 ieee80211_sta_process_addba_request(dev
, mgmt
, len
);
3065 case WLAN_ACTION_ADDBA_RESP
:
3066 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3067 sizeof(mgmt
->u
.action
.u
.addba_resp
)))
3069 ieee80211_sta_process_addba_resp(dev
, mgmt
, len
);
3071 case WLAN_ACTION_DELBA
:
3072 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3073 sizeof(mgmt
->u
.action
.u
.delba
)))
3075 ieee80211_sta_process_delba(dev
, mgmt
, len
);
3079 case PLINK_CATEGORY
:
3080 if (ieee80211_vif_is_mesh(&sdata
->vif
))
3081 mesh_rx_plink_frame(dev
, mgmt
, len
, rx_status
);
3083 case MESH_PATH_SEL_CATEGORY
:
3084 if (ieee80211_vif_is_mesh(&sdata
->vif
))
3085 mesh_rx_path_sel_frame(dev
, mgmt
, len
);
3090 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
3091 struct ieee80211_rx_status
*rx_status
)
3093 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3094 struct ieee80211_sub_if_data
*sdata
;
3095 struct ieee80211_if_sta
*ifsta
;
3096 struct ieee80211_mgmt
*mgmt
;
3102 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3103 ifsta
= &sdata
->u
.sta
;
3105 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3106 fc
= le16_to_cpu(mgmt
->frame_control
);
3108 switch (fc
& IEEE80211_FCTL_STYPE
) {
3109 case IEEE80211_STYPE_PROBE_REQ
:
3110 case IEEE80211_STYPE_PROBE_RESP
:
3111 case IEEE80211_STYPE_BEACON
:
3112 case IEEE80211_STYPE_ACTION
:
3113 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
3114 case IEEE80211_STYPE_AUTH
:
3115 case IEEE80211_STYPE_ASSOC_RESP
:
3116 case IEEE80211_STYPE_REASSOC_RESP
:
3117 case IEEE80211_STYPE_DEAUTH
:
3118 case IEEE80211_STYPE_DISASSOC
:
3119 skb_queue_tail(&ifsta
->skb_queue
, skb
);
3120 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3129 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
3130 struct sk_buff
*skb
)
3132 struct ieee80211_rx_status
*rx_status
;
3133 struct ieee80211_sub_if_data
*sdata
;
3134 struct ieee80211_if_sta
*ifsta
;
3135 struct ieee80211_mgmt
*mgmt
;
3138 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3139 ifsta
= &sdata
->u
.sta
;
3141 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
3142 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3143 fc
= le16_to_cpu(mgmt
->frame_control
);
3145 switch (fc
& IEEE80211_FCTL_STYPE
) {
3146 case IEEE80211_STYPE_PROBE_REQ
:
3147 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
3150 case IEEE80211_STYPE_PROBE_RESP
:
3151 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
3153 case IEEE80211_STYPE_BEACON
:
3154 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
3156 case IEEE80211_STYPE_AUTH
:
3157 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
3159 case IEEE80211_STYPE_ASSOC_RESP
:
3160 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 0);
3162 case IEEE80211_STYPE_REASSOC_RESP
:
3163 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 1);
3165 case IEEE80211_STYPE_DEAUTH
:
3166 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
3168 case IEEE80211_STYPE_DISASSOC
:
3169 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
3171 case IEEE80211_STYPE_ACTION
:
3172 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
, rx_status
);
3181 ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
3182 struct ieee80211_rx_status
*rx_status
)
3184 struct ieee80211_mgmt
*mgmt
;
3188 return RX_DROP_UNUSABLE
;
3190 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3191 fc
= mgmt
->frame_control
;
3193 if (ieee80211_is_ctl(fc
))
3197 return RX_DROP_MONITOR
;
3199 if (ieee80211_is_probe_resp(fc
)) {
3200 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
3205 if (ieee80211_is_beacon(fc
)) {
3206 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
3215 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
3217 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3219 struct sta_info
*sta
;
3220 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3224 list_for_each_entry_rcu(sta
, &local
->sta_list
, list
) {
3225 if (sta
->sdata
== sdata
&&
3226 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
3239 static void ieee80211_sta_expire(struct net_device
*dev
, unsigned long exp_time
)
3241 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3242 struct sta_info
*sta
, *tmp
;
3243 LIST_HEAD(tmp_list
);
3244 DECLARE_MAC_BUF(mac
);
3245 unsigned long flags
;
3247 spin_lock_irqsave(&local
->sta_lock
, flags
);
3248 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
3249 if (time_after(jiffies
, sta
->last_rx
+ exp_time
)) {
3250 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3251 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
3252 dev
->name
, print_mac(mac
, sta
->addr
));
3254 __sta_info_unlink(&sta
);
3256 list_add(&sta
->list
, &tmp_list
);
3258 spin_unlock_irqrestore(&local
->sta_lock
, flags
);
3260 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
)
3261 sta_info_destroy(sta
);
3265 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
3266 struct ieee80211_if_sta
*ifsta
)
3268 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
3270 ieee80211_sta_expire(dev
, IEEE80211_IBSS_INACTIVITY_LIMIT
);
3271 if (ieee80211_sta_active_ibss(dev
))
3274 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
3275 "IBSS networks with same SSID (merge)\n", dev
->name
);
3276 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
3280 #ifdef CONFIG_MAC80211_MESH
3281 static void ieee80211_mesh_housekeeping(struct net_device
*dev
,
3282 struct ieee80211_if_sta
*ifsta
)
3284 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3287 ieee80211_sta_expire(dev
, IEEE80211_MESH_PEER_INACTIVITY_LIMIT
);
3288 mesh_path_expire(dev
);
3290 free_plinks
= mesh_plink_availables(sdata
);
3291 if (free_plinks
!= sdata
->u
.sta
.accepting_plinks
)
3292 ieee80211_if_config(sdata
, IEEE80211_IFCC_BEACON
);
3294 mod_timer(&ifsta
->timer
, jiffies
+
3295 IEEE80211_MESH_HOUSEKEEPING_INTERVAL
);
3299 void ieee80211_start_mesh(struct net_device
*dev
)
3301 struct ieee80211_if_sta
*ifsta
;
3302 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3303 ifsta
= &sdata
->u
.sta
;
3304 ifsta
->state
= IEEE80211_MESH_UP
;
3305 ieee80211_sta_timer((unsigned long)sdata
);
3310 void ieee80211_sta_timer(unsigned long data
)
3312 struct ieee80211_sub_if_data
*sdata
=
3313 (struct ieee80211_sub_if_data
*) data
;
3314 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3315 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
3317 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3318 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3321 void ieee80211_sta_work(struct work_struct
*work
)
3323 struct ieee80211_sub_if_data
*sdata
=
3324 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
3325 struct net_device
*dev
= sdata
->dev
;
3326 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3327 struct ieee80211_if_sta
*ifsta
;
3328 struct sk_buff
*skb
;
3330 if (!netif_running(dev
))
3333 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
3336 if (WARN_ON(sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
3337 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
3338 sdata
->vif
.type
!= IEEE80211_IF_TYPE_MESH_POINT
))
3340 ifsta
= &sdata
->u
.sta
;
3342 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
3343 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
3345 #ifdef CONFIG_MAC80211_MESH
3346 if (ifsta
->preq_queue_len
&&
3348 ifsta
->last_preq
+ msecs_to_jiffies(ifsta
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
3349 mesh_path_start_discovery(dev
);
3352 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
3353 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
3354 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
3355 if (ifsta
->scan_ssid_len
)
3356 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
3358 ieee80211_sta_start_scan(dev
, NULL
, 0);
3362 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
3363 if (ieee80211_sta_config_auth(dev
, ifsta
))
3365 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3366 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
3369 switch (ifsta
->state
) {
3370 case IEEE80211_DISABLED
:
3372 case IEEE80211_AUTHENTICATE
:
3373 ieee80211_authenticate(dev
, ifsta
);
3375 case IEEE80211_ASSOCIATE
:
3376 ieee80211_associate(dev
, ifsta
);
3378 case IEEE80211_ASSOCIATED
:
3379 ieee80211_associated(dev
, ifsta
);
3381 case IEEE80211_IBSS_SEARCH
:
3382 ieee80211_sta_find_ibss(dev
, ifsta
);
3384 case IEEE80211_IBSS_JOINED
:
3385 ieee80211_sta_merge_ibss(dev
, ifsta
);
3387 #ifdef CONFIG_MAC80211_MESH
3388 case IEEE80211_MESH_UP
:
3389 ieee80211_mesh_housekeeping(dev
, ifsta
);
3397 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
3398 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
3399 "mixed-cell disabled - disassociate\n", dev
->name
);
3401 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
3402 ieee80211_set_disassoc(dev
, ifsta
, 0);
3407 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
3408 struct ieee80211_if_sta
*ifsta
)
3410 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3412 if (local
->ops
->reset_tsf
) {
3413 /* Reset own TSF to allow time synchronization work. */
3414 local
->ops
->reset_tsf(local_to_hw(local
));
3417 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
3420 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
3421 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3422 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
3423 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
3424 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
3425 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
3427 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3428 ifsta
->auth_transaction
= -1;
3429 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
3430 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
3431 netif_carrier_off(dev
);
3435 void ieee80211_sta_req_auth(struct net_device
*dev
,
3436 struct ieee80211_if_sta
*ifsta
)
3438 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3439 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3441 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3444 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
3445 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
3446 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
3447 IEEE80211_STA_AUTO_SSID_SEL
))) {
3448 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3449 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3453 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
3454 const char *ssid
, int ssid_len
)
3456 int tmp
, hidden_ssid
;
3458 if (ssid_len
== ifsta
->ssid_len
&&
3459 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
3462 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
3468 if (ssid
[tmp
] != '\0') {
3474 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
3477 if (ssid_len
== 1 && ssid
[0] == ' ')
3483 static int ieee80211_sta_config_auth(struct net_device
*dev
,
3484 struct ieee80211_if_sta
*ifsta
)
3486 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3487 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3488 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
3489 int top_rssi
= 0, freq
;
3491 spin_lock_bh(&local
->sta_bss_lock
);
3492 freq
= local
->oper_channel
->center_freq
;
3493 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3494 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
3497 if ((ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
3498 IEEE80211_STA_AUTO_BSSID_SEL
|
3499 IEEE80211_STA_AUTO_CHANNEL_SEL
)) &&
3500 (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
3501 !!sdata
->default_key
))
3504 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
3508 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
3509 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
3512 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
3513 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
3516 if (!selected
|| top_rssi
< bss
->signal
) {
3518 top_rssi
= bss
->signal
;
3522 atomic_inc(&selected
->users
);
3523 spin_unlock_bh(&local
->sta_bss_lock
);
3526 ieee80211_set_freq(dev
, selected
->freq
);
3527 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
3528 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
3529 selected
->ssid_len
);
3530 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
3531 ieee80211_sta_def_wmm_params(dev
, selected
, 0);
3532 ieee80211_rx_bss_put(local
, selected
);
3533 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3534 ieee80211_sta_reset_auth(dev
, ifsta
);
3537 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
3538 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
3539 ieee80211_sta_start_scan(dev
, NULL
, 0);
3541 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
3543 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3544 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3546 ifsta
->state
= IEEE80211_DISABLED
;
3552 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
3553 struct ieee80211_if_sta
*ifsta
)
3555 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3556 struct ieee80211_sta_bss
*bss
;
3557 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3558 struct ieee80211_supported_band
*sband
;
3559 u8 bssid
[ETH_ALEN
], *pos
;
3562 DECLARE_MAC_BUF(mac
);
3565 /* Easier testing, use fixed BSSID. */
3566 memset(bssid
, 0xfe, ETH_ALEN
);
3568 /* Generate random, not broadcast, locally administered BSSID. Mix in
3569 * own MAC address to make sure that devices that do not have proper
3570 * random number generator get different BSSID. */
3571 get_random_bytes(bssid
, ETH_ALEN
);
3572 for (i
= 0; i
< ETH_ALEN
; i
++)
3573 bssid
[i
] ^= dev
->dev_addr
[i
];
3578 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
3579 dev
->name
, print_mac(mac
, bssid
));
3581 bss
= ieee80211_rx_bss_add(dev
, bssid
,
3582 local
->hw
.conf
.channel
->center_freq
,
3583 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
3587 bss
->band
= local
->hw
.conf
.channel
->band
;
3588 sband
= local
->hw
.wiphy
->bands
[bss
->band
];
3590 if (local
->hw
.conf
.beacon_int
== 0)
3591 local
->hw
.conf
.beacon_int
= 100;
3592 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
3593 bss
->last_update
= jiffies
;
3594 bss
->capability
= WLAN_CAPABILITY_IBSS
;
3596 if (sdata
->default_key
)
3597 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
3599 sdata
->drop_unencrypted
= 0;
3601 bss
->supp_rates_len
= sband
->n_bitrates
;
3602 pos
= bss
->supp_rates
;
3603 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
3604 int rate
= sband
->bitrates
[i
].bitrate
;
3605 *pos
++ = (u8
) (rate
/ 5);
3608 ret
= ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3609 ieee80211_rx_bss_put(local
, bss
);
3614 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
3615 struct ieee80211_if_sta
*ifsta
)
3617 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3618 struct ieee80211_sta_bss
*bss
;
3622 DECLARE_MAC_BUF(mac
);
3623 DECLARE_MAC_BUF(mac2
);
3625 if (ifsta
->ssid_len
== 0)
3628 active_ibss
= ieee80211_sta_active_ibss(dev
);
3629 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3630 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
3631 dev
->name
, active_ibss
);
3632 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3633 spin_lock_bh(&local
->sta_bss_lock
);
3634 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3635 if (ifsta
->ssid_len
!= bss
->ssid_len
||
3636 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
3637 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
3639 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3640 printk(KERN_DEBUG
" bssid=%s found\n",
3641 print_mac(mac
, bss
->bssid
));
3642 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3643 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
3645 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
3648 spin_unlock_bh(&local
->sta_bss_lock
);
3650 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3652 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
3653 "%s\n", print_mac(mac
, bssid
),
3654 print_mac(mac2
, ifsta
->bssid
));
3655 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3656 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
3657 (bss
= ieee80211_rx_bss_get(dev
, bssid
,
3658 local
->hw
.conf
.channel
->center_freq
,
3659 ifsta
->ssid
, ifsta
->ssid_len
))) {
3661 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
3662 " based on configured SSID\n",
3663 dev
->name
, print_mac(mac
, bssid
));
3664 ret
= ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3665 ieee80211_rx_bss_put(local
, bss
);
3668 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3669 printk(KERN_DEBUG
" did not try to join ibss\n");
3670 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3672 /* Selected IBSS not found in current scan results - try to scan */
3673 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3674 !ieee80211_sta_active_ibss(dev
)) {
3675 mod_timer(&ifsta
->timer
, jiffies
+
3676 IEEE80211_IBSS_MERGE_INTERVAL
);
3677 } else if (time_after(jiffies
, local
->last_scan_completed
+
3678 IEEE80211_SCAN_INTERVAL
)) {
3679 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
3680 "join\n", dev
->name
);
3681 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
3683 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
3684 int interval
= IEEE80211_SCAN_INTERVAL
;
3686 if (time_after(jiffies
, ifsta
->ibss_join_req
+
3687 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
3688 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
3689 (!(local
->oper_channel
->flags
&
3690 IEEE80211_CHAN_NO_IBSS
)))
3691 return ieee80211_sta_create_ibss(dev
, ifsta
);
3692 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
3693 printk(KERN_DEBUG
"%s: IBSS not allowed on"
3694 " %d MHz\n", dev
->name
,
3695 local
->hw
.conf
.channel
->center_freq
);
3698 /* No IBSS found - decrease scan interval and continue
3700 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
3703 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3704 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
3712 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
3714 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3715 struct ieee80211_if_sta
*ifsta
;
3718 if (len
> IEEE80211_MAX_SSID_LEN
)
3721 ifsta
= &sdata
->u
.sta
;
3723 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0) {
3724 memset(ifsta
->ssid
, 0, sizeof(ifsta
->ssid
));
3725 memcpy(ifsta
->ssid
, ssid
, len
);
3726 ifsta
->ssid_len
= len
;
3727 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
3731 * Hack! MLME code needs to be cleaned up to have different
3732 * entry points for configuration and internal selection change
3734 if (netif_running(sdata
->dev
))
3735 res
= ieee80211_if_config(sdata
, IEEE80211_IFCC_SSID
);
3737 printk(KERN_DEBUG
"%s: Failed to config new SSID to "
3738 "the low-level driver\n", dev
->name
);
3744 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
3746 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
3748 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3749 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
3750 ifsta
->ibss_join_req
= jiffies
;
3751 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3752 return ieee80211_sta_find_ibss(dev
, ifsta
);
3759 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
3761 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3762 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3763 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
3764 *len
= ifsta
->ssid_len
;
3769 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
3771 struct ieee80211_sub_if_data
*sdata
;
3772 struct ieee80211_if_sta
*ifsta
;
3775 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3776 ifsta
= &sdata
->u
.sta
;
3778 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3779 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
3782 * Hack! See also ieee80211_sta_set_ssid.
3784 if (netif_running(sdata
->dev
))
3785 res
= ieee80211_if_config(sdata
, IEEE80211_IFCC_BSSID
);
3787 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
3788 "the low-level driver\n", dev
->name
);
3793 if (is_valid_ether_addr(bssid
))
3794 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
3796 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
3802 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
3803 struct ieee80211_sub_if_data
*sdata
,
3806 struct sk_buff
*skb
;
3807 struct ieee80211_hdr
*nullfunc
;
3810 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
3812 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
3813 "frame\n", sdata
->dev
->name
);
3816 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3818 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
3819 memset(nullfunc
, 0, 24);
3820 fc
= cpu_to_le16(IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
3821 IEEE80211_FCTL_TODS
);
3823 fc
|= cpu_to_le16(IEEE80211_FCTL_PM
);
3824 nullfunc
->frame_control
= fc
;
3825 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3826 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
3827 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3829 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
3833 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data
*sdata
)
3835 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
||
3836 ieee80211_vif_is_mesh(&sdata
->vif
))
3837 ieee80211_sta_timer((unsigned long)sdata
);
3840 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
3842 struct ieee80211_local
*local
= hw_to_local(hw
);
3843 struct net_device
*dev
= local
->scan_dev
;
3844 struct ieee80211_sub_if_data
*sdata
;
3845 union iwreq_data wrqu
;
3847 local
->last_scan_completed
= jiffies
;
3848 memset(&wrqu
, 0, sizeof(wrqu
));
3849 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
3851 if (local
->sta_hw_scanning
) {
3852 local
->sta_hw_scanning
= 0;
3853 if (ieee80211_hw_config(local
))
3854 printk(KERN_DEBUG
"%s: failed to restore operational "
3855 "channel after scan\n", dev
->name
);
3856 /* Restart STA timer for HW scan case */
3858 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
)
3859 ieee80211_restart_sta_timer(sdata
);
3865 local
->sta_sw_scanning
= 0;
3866 if (ieee80211_hw_config(local
))
3867 printk(KERN_DEBUG
"%s: failed to restore operational "
3868 "channel after scan\n", dev
->name
);
3871 netif_tx_lock_bh(local
->mdev
);
3872 netif_addr_lock(local
->mdev
);
3873 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
3874 local
->ops
->configure_filter(local_to_hw(local
),
3875 FIF_BCN_PRBRESP_PROMISC
,
3876 &local
->filter_flags
,
3877 local
->mdev
->mc_count
,
3878 local
->mdev
->mc_list
);
3880 netif_addr_unlock(local
->mdev
);
3881 netif_tx_unlock_bh(local
->mdev
);
3884 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3885 /* Tell AP we're back */
3886 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3887 sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
3888 ieee80211_send_nullfunc(local
, sdata
, 0);
3890 ieee80211_restart_sta_timer(sdata
);
3892 netif_wake_queue(sdata
->dev
);
3897 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3898 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
3899 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3900 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
3901 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3902 !ieee80211_sta_active_ibss(dev
)))
3903 ieee80211_sta_find_ibss(dev
, ifsta
);
3906 EXPORT_SYMBOL(ieee80211_scan_completed
);
3908 void ieee80211_sta_scan_work(struct work_struct
*work
)
3910 struct ieee80211_local
*local
=
3911 container_of(work
, struct ieee80211_local
, scan_work
.work
);
3912 struct net_device
*dev
= local
->scan_dev
;
3913 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3914 struct ieee80211_supported_band
*sband
;
3915 struct ieee80211_channel
*chan
;
3917 unsigned long next_delay
= 0;
3919 if (!local
->sta_sw_scanning
)
3922 switch (local
->scan_state
) {
3923 case SCAN_SET_CHANNEL
:
3925 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
3926 * after we successfully scanned the last channel of the last
3927 * band (and the last band is supported by the hw)
3929 if (local
->scan_band
< IEEE80211_NUM_BANDS
)
3930 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3935 * If we are at an unsupported band and have more bands
3936 * left to scan, advance to the next supported one.
3938 while (!sband
&& local
->scan_band
< IEEE80211_NUM_BANDS
- 1) {
3940 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3941 local
->scan_channel_idx
= 0;
3944 /* if no more bands/channels left, complete scan */
3945 if (!sband
|| local
->scan_channel_idx
>= sband
->n_channels
) {
3946 ieee80211_scan_completed(local_to_hw(local
));
3950 chan
= &sband
->channels
[local
->scan_channel_idx
];
3952 if (chan
->flags
& IEEE80211_CHAN_DISABLED
||
3953 (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3954 chan
->flags
& IEEE80211_CHAN_NO_IBSS
))
3958 local
->scan_channel
= chan
;
3959 if (ieee80211_hw_config(local
)) {
3960 printk(KERN_DEBUG
"%s: failed to set freq to "
3961 "%d MHz for scan\n", dev
->name
,
3967 /* advance state machine to next channel/band */
3968 local
->scan_channel_idx
++;
3969 if (local
->scan_channel_idx
>= sband
->n_channels
) {
3971 * scan_band may end up == IEEE80211_NUM_BANDS, but
3972 * we'll catch that case above and complete the scan
3973 * if that is the case.
3976 local
->scan_channel_idx
= 0;
3982 next_delay
= IEEE80211_PROBE_DELAY
+
3983 usecs_to_jiffies(local
->hw
.channel_change_time
);
3984 local
->scan_state
= SCAN_SEND_PROBE
;
3986 case SCAN_SEND_PROBE
:
3987 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
3988 local
->scan_state
= SCAN_SET_CHANNEL
;
3990 if (local
->scan_channel
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)
3992 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
3993 local
->scan_ssid_len
);
3994 next_delay
= IEEE80211_CHANNEL_TIME
;
3998 if (local
->sta_sw_scanning
)
3999 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
4004 static int ieee80211_sta_start_scan(struct net_device
*dev
,
4005 u8
*ssid
, size_t ssid_len
)
4007 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4008 struct ieee80211_sub_if_data
*sdata
;
4010 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
4013 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
4014 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
4017 * ScanType: ACTIVE, PASSIVE
4018 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
4019 * a Probe frame during active scanning
4021 * MinChannelTime (>= ProbeDelay), in TU
4022 * MaxChannelTime: (>= MinChannelTime), in TU
4025 /* MLME-SCAN.confirm
4027 * ResultCode: SUCCESS, INVALID_PARAMETERS
4030 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
4031 if (local
->scan_dev
== dev
)
4036 if (local
->ops
->hw_scan
) {
4037 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
4040 local
->sta_hw_scanning
= 1;
4041 local
->scan_dev
= dev
;
4046 local
->sta_sw_scanning
= 1;
4049 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
4050 netif_stop_queue(sdata
->dev
);
4051 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
4052 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
4053 ieee80211_send_nullfunc(local
, sdata
, 1);
4058 local
->scan_ssid_len
= ssid_len
;
4059 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
4061 local
->scan_ssid_len
= 0;
4062 local
->scan_state
= SCAN_SET_CHANNEL
;
4063 local
->scan_channel_idx
= 0;
4064 local
->scan_band
= IEEE80211_BAND_2GHZ
;
4065 local
->scan_dev
= dev
;
4067 netif_addr_lock_bh(local
->mdev
);
4068 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
4069 local
->ops
->configure_filter(local_to_hw(local
),
4070 FIF_BCN_PRBRESP_PROMISC
,
4071 &local
->filter_flags
,
4072 local
->mdev
->mc_count
,
4073 local
->mdev
->mc_list
);
4074 netif_addr_unlock_bh(local
->mdev
);
4076 /* TODO: start scan as soon as all nullfunc frames are ACKed */
4077 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
4078 IEEE80211_CHANNEL_TIME
);
4084 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
4086 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4087 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4088 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4090 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4091 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
4093 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
4094 if (local
->scan_dev
== dev
)
4099 ifsta
->scan_ssid_len
= ssid_len
;
4101 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
4102 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
4103 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
4108 ieee80211_sta_scan_result(struct net_device
*dev
,
4109 struct iw_request_info
*info
,
4110 struct ieee80211_sta_bss
*bss
,
4111 char *current_ev
, char *end_buf
)
4113 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4114 struct iw_event iwe
;
4116 if (time_after(jiffies
,
4117 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
4120 memset(&iwe
, 0, sizeof(iwe
));
4121 iwe
.cmd
= SIOCGIWAP
;
4122 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
4123 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
4124 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
, &iwe
,
4127 memset(&iwe
, 0, sizeof(iwe
));
4128 iwe
.cmd
= SIOCGIWESSID
;
4129 if (bss_mesh_cfg(bss
)) {
4130 iwe
.u
.data
.length
= bss_mesh_id_len(bss
);
4131 iwe
.u
.data
.flags
= 1;
4132 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4133 &iwe
, bss_mesh_id(bss
));
4135 iwe
.u
.data
.length
= bss
->ssid_len
;
4136 iwe
.u
.data
.flags
= 1;
4137 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4141 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)
4142 || bss_mesh_cfg(bss
)) {
4143 memset(&iwe
, 0, sizeof(iwe
));
4144 iwe
.cmd
= SIOCGIWMODE
;
4145 if (bss_mesh_cfg(bss
))
4146 iwe
.u
.mode
= IW_MODE_MESH
;
4147 else if (bss
->capability
& WLAN_CAPABILITY_ESS
)
4148 iwe
.u
.mode
= IW_MODE_MASTER
;
4150 iwe
.u
.mode
= IW_MODE_ADHOC
;
4151 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
,
4152 &iwe
, IW_EV_UINT_LEN
);
4155 memset(&iwe
, 0, sizeof(iwe
));
4156 iwe
.cmd
= SIOCGIWFREQ
;
4157 iwe
.u
.freq
.m
= ieee80211_frequency_to_channel(bss
->freq
);
4159 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
, &iwe
,
4162 memset(&iwe
, 0, sizeof(iwe
));
4163 iwe
.cmd
= SIOCGIWFREQ
;
4164 iwe
.u
.freq
.m
= bss
->freq
;
4166 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
, &iwe
,
4168 memset(&iwe
, 0, sizeof(iwe
));
4170 iwe
.u
.qual
.qual
= bss
->qual
;
4171 iwe
.u
.qual
.level
= bss
->signal
;
4172 iwe
.u
.qual
.noise
= bss
->noise
;
4173 iwe
.u
.qual
.updated
= local
->wstats_flags
;
4174 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
, &iwe
,
4177 memset(&iwe
, 0, sizeof(iwe
));
4178 iwe
.cmd
= SIOCGIWENCODE
;
4179 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
4180 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
4182 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
4183 iwe
.u
.data
.length
= 0;
4184 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4187 if (bss
&& bss
->wpa_ie
) {
4188 memset(&iwe
, 0, sizeof(iwe
));
4189 iwe
.cmd
= IWEVGENIE
;
4190 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
4191 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4195 if (bss
&& bss
->rsn_ie
) {
4196 memset(&iwe
, 0, sizeof(iwe
));
4197 iwe
.cmd
= IWEVGENIE
;
4198 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
4199 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4203 if (bss
&& bss
->ht_ie
) {
4204 memset(&iwe
, 0, sizeof(iwe
));
4205 iwe
.cmd
= IWEVGENIE
;
4206 iwe
.u
.data
.length
= bss
->ht_ie_len
;
4207 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4211 if (bss
&& bss
->supp_rates_len
> 0) {
4212 /* display all supported rates in readable format */
4213 char *p
= current_ev
+ iwe_stream_lcp_len(info
);
4216 memset(&iwe
, 0, sizeof(iwe
));
4217 iwe
.cmd
= SIOCGIWRATE
;
4218 /* Those two flags are ignored... */
4219 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
4221 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
4222 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
4224 p
= iwe_stream_add_value(info
, current_ev
, p
,
4225 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
4232 buf
= kmalloc(30, GFP_ATOMIC
);
4234 memset(&iwe
, 0, sizeof(iwe
));
4235 iwe
.cmd
= IWEVCUSTOM
;
4236 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
4237 iwe
.u
.data
.length
= strlen(buf
);
4238 current_ev
= iwe_stream_add_point(info
, current_ev
,
4241 memset(&iwe
, 0, sizeof(iwe
));
4242 iwe
.cmd
= IWEVCUSTOM
;
4243 sprintf(buf
, " Last beacon: %dms ago",
4244 jiffies_to_msecs(jiffies
- bss
->last_update
));
4245 iwe
.u
.data
.length
= strlen(buf
);
4246 current_ev
= iwe_stream_add_point(info
, current_ev
,
4247 end_buf
, &iwe
, buf
);
4252 if (bss_mesh_cfg(bss
)) {
4254 u8
*cfg
= bss_mesh_cfg(bss
);
4255 buf
= kmalloc(50, GFP_ATOMIC
);
4257 memset(&iwe
, 0, sizeof(iwe
));
4258 iwe
.cmd
= IWEVCUSTOM
;
4259 sprintf(buf
, "Mesh network (version %d)", cfg
[0]);
4260 iwe
.u
.data
.length
= strlen(buf
);
4261 current_ev
= iwe_stream_add_point(info
, current_ev
,
4264 sprintf(buf
, "Path Selection Protocol ID: "
4265 "0x%02X%02X%02X%02X", cfg
[1], cfg
[2], cfg
[3],
4267 iwe
.u
.data
.length
= strlen(buf
);
4268 current_ev
= iwe_stream_add_point(info
, current_ev
,
4271 sprintf(buf
, "Path Selection Metric ID: "
4272 "0x%02X%02X%02X%02X", cfg
[5], cfg
[6], cfg
[7],
4274 iwe
.u
.data
.length
= strlen(buf
);
4275 current_ev
= iwe_stream_add_point(info
, current_ev
,
4278 sprintf(buf
, "Congestion Control Mode ID: "
4279 "0x%02X%02X%02X%02X", cfg
[9], cfg
[10],
4281 iwe
.u
.data
.length
= strlen(buf
);
4282 current_ev
= iwe_stream_add_point(info
, current_ev
,
4285 sprintf(buf
, "Channel Precedence: "
4286 "0x%02X%02X%02X%02X", cfg
[13], cfg
[14],
4288 iwe
.u
.data
.length
= strlen(buf
);
4289 current_ev
= iwe_stream_add_point(info
, current_ev
,
4300 int ieee80211_sta_scan_results(struct net_device
*dev
,
4301 struct iw_request_info
*info
,
4302 char *buf
, size_t len
)
4304 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4305 char *current_ev
= buf
;
4306 char *end_buf
= buf
+ len
;
4307 struct ieee80211_sta_bss
*bss
;
4309 spin_lock_bh(&local
->sta_bss_lock
);
4310 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
4311 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
4312 spin_unlock_bh(&local
->sta_bss_lock
);
4315 current_ev
= ieee80211_sta_scan_result(dev
, info
, bss
,
4316 current_ev
, end_buf
);
4318 spin_unlock_bh(&local
->sta_bss_lock
);
4319 return current_ev
- buf
;
4323 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
4325 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4326 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4328 kfree(ifsta
->extra_ie
);
4330 ifsta
->extra_ie
= NULL
;
4331 ifsta
->extra_ie_len
= 0;
4334 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
4335 if (!ifsta
->extra_ie
) {
4336 ifsta
->extra_ie_len
= 0;
4339 memcpy(ifsta
->extra_ie
, ie
, len
);
4340 ifsta
->extra_ie_len
= len
;
4345 struct sta_info
*ieee80211_ibss_add_sta(struct net_device
*dev
,
4346 struct sk_buff
*skb
, u8
*bssid
,
4347 u8
*addr
, u64 supp_rates
)
4349 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4350 struct sta_info
*sta
;
4351 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4352 DECLARE_MAC_BUF(mac
);
4353 int band
= local
->hw
.conf
.channel
->band
;
4355 /* TODO: Could consider removing the least recently used entry and
4356 * allow new one to be added. */
4357 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
4358 if (net_ratelimit()) {
4359 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
4360 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
4365 if (compare_ether_addr(bssid
, sdata
->u
.sta
.bssid
))
4368 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
4369 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
4370 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
4373 sta
= sta_info_alloc(sdata
, addr
, GFP_ATOMIC
);
4377 set_sta_flags(sta
, WLAN_STA_AUTHORIZED
);
4380 sta
->supp_rates
[band
] = supp_rates
;
4382 sta
->supp_rates
[band
] = sdata
->u
.sta
.supp_rates_bits
[band
];
4384 rate_control_rate_init(sta
, local
);
4386 if (sta_info_insert(sta
))
4393 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
4395 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4396 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4398 printk(KERN_DEBUG
"%s: deauthenticating by local choice (reason=%d)\n",
4401 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
4402 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
4405 ieee80211_send_deauth(dev
, ifsta
, reason
);
4406 ieee80211_set_disassoc(dev
, ifsta
, 1);
4411 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
4413 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4414 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4416 printk(KERN_DEBUG
"%s: disassociating by local choice (reason=%d)\n",
4419 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4422 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
4425 ieee80211_send_disassoc(dev
, ifsta
, reason
);
4426 ieee80211_set_disassoc(dev
, ifsta
, 0);
4430 void ieee80211_notify_mac(struct ieee80211_hw
*hw
,
4431 enum ieee80211_notification_types notif_type
)
4433 struct ieee80211_local
*local
= hw_to_local(hw
);
4434 struct ieee80211_sub_if_data
*sdata
;
4436 switch (notif_type
) {
4437 case IEEE80211_NOTIFY_RE_ASSOC
:
4439 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
4440 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4443 ieee80211_sta_req_auth(sdata
->dev
, &sdata
->u
.sta
);
4449 EXPORT_SYMBOL(ieee80211_notify_mac
);