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
;
554 sdata
->bss_conf
.dtim_period
= bss
->dtim_period
;
556 changed
|= ieee80211_handle_bss_capability(sdata
, bss
);
558 ieee80211_rx_bss_put(local
, bss
);
561 if (conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
562 changed
|= BSS_CHANGED_HT
;
563 sdata
->bss_conf
.assoc_ht
= 1;
564 sdata
->bss_conf
.ht_conf
= &conf
->ht_conf
;
565 sdata
->bss_conf
.ht_bss_conf
= &conf
->ht_bss_conf
;
568 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
569 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
570 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
571 ieee80211_sta_send_associnfo(dev
, ifsta
);
573 netif_carrier_off(dev
);
574 ieee80211_sta_tear_down_BA_sessions(dev
, ifsta
->bssid
);
575 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
576 changed
|= ieee80211_reset_erp_info(dev
);
578 sdata
->bss_conf
.assoc_ht
= 0;
579 sdata
->bss_conf
.ht_conf
= NULL
;
580 sdata
->bss_conf
.ht_bss_conf
= NULL
;
582 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
584 ifsta
->last_probe
= jiffies
;
585 ieee80211_led_assoc(local
, assoc
);
587 sdata
->bss_conf
.assoc
= assoc
;
588 ieee80211_bss_info_change_notify(sdata
, changed
);
591 netif_carrier_on(dev
);
593 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
594 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
597 static void ieee80211_set_disassoc(struct net_device
*dev
,
598 struct ieee80211_if_sta
*ifsta
, int deauth
)
601 ifsta
->auth_tries
= 0;
602 ifsta
->assoc_tries
= 0;
603 ieee80211_set_associated(dev
, ifsta
, 0);
606 void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
609 struct ieee80211_sub_if_data
*sdata
;
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 skb
->iif
= sdata
->dev
->ifindex
;
618 skb
->do_not_encrypt
= !encrypt
;
624 static void ieee80211_send_auth(struct net_device
*dev
,
625 struct ieee80211_if_sta
*ifsta
,
626 int transaction
, u8
*extra
, size_t extra_len
,
629 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
631 struct ieee80211_mgmt
*mgmt
;
633 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
634 sizeof(*mgmt
) + 6 + extra_len
);
636 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
637 "frame\n", dev
->name
);
640 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
642 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
643 memset(mgmt
, 0, 24 + 6);
644 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
645 IEEE80211_STYPE_AUTH
);
647 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
648 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
649 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
650 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
651 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
652 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
653 ifsta
->auth_transaction
= transaction
+ 1;
654 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
656 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
658 ieee80211_sta_tx(dev
, skb
, encrypt
);
662 static void ieee80211_authenticate(struct net_device
*dev
,
663 struct ieee80211_if_sta
*ifsta
)
665 DECLARE_MAC_BUF(mac
);
668 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
669 printk(KERN_DEBUG
"%s: authentication with AP %s"
671 dev
->name
, print_mac(mac
, ifsta
->bssid
));
672 ifsta
->state
= IEEE80211_DISABLED
;
676 ifsta
->state
= IEEE80211_AUTHENTICATE
;
677 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
678 dev
->name
, print_mac(mac
, ifsta
->bssid
));
680 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
682 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
685 static int ieee80211_compatible_rates(struct ieee80211_sta_bss
*bss
,
686 struct ieee80211_supported_band
*sband
,
692 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
693 int rate
= (bss
->supp_rates
[i
] & 0x7F) * 5;
695 for (j
= 0; j
< sband
->n_bitrates
; j
++)
696 if (sband
->bitrates
[j
].bitrate
== rate
) {
706 static void ieee80211_send_assoc(struct net_device
*dev
,
707 struct ieee80211_if_sta
*ifsta
)
709 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
711 struct ieee80211_mgmt
*mgmt
;
713 int i
, len
, count
, rates_len
, supp_rates_len
;
715 struct ieee80211_sta_bss
*bss
;
717 struct ieee80211_supported_band
*sband
;
720 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
721 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
724 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
725 "frame\n", dev
->name
);
728 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
730 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
732 capab
= ifsta
->capab
;
734 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
) {
735 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
))
736 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
737 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
))
738 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
741 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
742 local
->hw
.conf
.channel
->center_freq
,
743 ifsta
->ssid
, ifsta
->ssid_len
);
745 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
746 capab
|= WLAN_CAPABILITY_PRIVACY
;
750 /* get all rates supported by the device and the AP as
751 * some APs don't like getting a superset of their rates
752 * in the association request (e.g. D-Link DAP 1353 in
754 rates_len
= ieee80211_compatible_rates(bss
, sband
, &rates
);
756 if ((bss
->capability
& WLAN_CAPABILITY_SPECTRUM_MGMT
) &&
757 (local
->hw
.flags
& IEEE80211_HW_SPECTRUM_MGMT
))
758 capab
|= WLAN_CAPABILITY_SPECTRUM_MGMT
;
760 ieee80211_rx_bss_put(local
, bss
);
763 rates_len
= sband
->n_bitrates
;
766 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
768 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
769 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
770 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
772 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
774 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
775 IEEE80211_STYPE_REASSOC_REQ
);
776 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
777 mgmt
->u
.reassoc_req
.listen_interval
=
778 cpu_to_le16(local
->hw
.conf
.listen_interval
);
779 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
783 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
784 IEEE80211_STYPE_ASSOC_REQ
);
785 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
786 mgmt
->u
.reassoc_req
.listen_interval
=
787 cpu_to_le16(local
->hw
.conf
.listen_interval
);
791 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
792 *pos
++ = WLAN_EID_SSID
;
793 *pos
++ = ifsta
->ssid_len
;
794 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
796 /* add all rates which were marked to be used above */
797 supp_rates_len
= rates_len
;
798 if (supp_rates_len
> 8)
801 len
= sband
->n_bitrates
;
802 pos
= skb_put(skb
, supp_rates_len
+ 2);
803 *pos
++ = WLAN_EID_SUPP_RATES
;
804 *pos
++ = supp_rates_len
;
807 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
808 if (BIT(i
) & rates
) {
809 int rate
= sband
->bitrates
[i
].bitrate
;
810 *pos
++ = (u8
) (rate
/ 5);
816 if (rates_len
> count
) {
817 pos
= skb_put(skb
, rates_len
- count
+ 2);
818 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
819 *pos
++ = rates_len
- count
;
821 for (i
++; i
< sband
->n_bitrates
; i
++) {
822 if (BIT(i
) & rates
) {
823 int rate
= sband
->bitrates
[i
].bitrate
;
824 *pos
++ = (u8
) (rate
/ 5);
829 if (capab
& WLAN_CAPABILITY_SPECTRUM_MGMT
) {
830 /* 1. power capabilities */
831 pos
= skb_put(skb
, 4);
832 *pos
++ = WLAN_EID_PWR_CAPABILITY
;
834 *pos
++ = 0; /* min tx power */
835 *pos
++ = local
->hw
.conf
.channel
->max_power
; /* max tx power */
837 /* 2. supported channels */
838 /* TODO: get this in reg domain format */
839 pos
= skb_put(skb
, 2 * sband
->n_channels
+ 2);
840 *pos
++ = WLAN_EID_SUPPORTED_CHANNELS
;
841 *pos
++ = 2 * sband
->n_channels
;
842 for (i
= 0; i
< sband
->n_channels
; i
++) {
843 *pos
++ = ieee80211_frequency_to_channel(
844 sband
->channels
[i
].center_freq
);
845 *pos
++ = 1; /* one channel in the subband*/
849 if (ifsta
->extra_ie
) {
850 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
851 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
854 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
855 pos
= skb_put(skb
, 9);
856 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
857 *pos
++ = 7; /* len */
858 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
861 *pos
++ = 2; /* WME */
862 *pos
++ = 0; /* WME info */
863 *pos
++ = 1; /* WME ver */
867 /* wmm support is a must to HT */
868 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
) &&
869 sband
->ht_info
.ht_supported
&& bss
->ht_add_ie
) {
870 struct ieee80211_ht_addt_info
*ht_add_info
=
871 (struct ieee80211_ht_addt_info
*)bss
->ht_add_ie
;
872 u16 cap
= sband
->ht_info
.cap
;
874 u32 flags
= local
->hw
.conf
.channel
->flags
;
876 switch (ht_add_info
->ht_param
& IEEE80211_HT_IE_CHA_SEC_OFFSET
) {
877 case IEEE80211_HT_IE_CHA_SEC_ABOVE
:
878 if (flags
& IEEE80211_CHAN_NO_FAT_ABOVE
) {
879 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH
;
880 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
883 case IEEE80211_HT_IE_CHA_SEC_BELOW
:
884 if (flags
& IEEE80211_CHAN_NO_FAT_BELOW
) {
885 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH
;
886 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
891 tmp
= cpu_to_le16(cap
);
892 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
)+2);
893 *pos
++ = WLAN_EID_HT_CAPABILITY
;
894 *pos
++ = sizeof(struct ieee80211_ht_cap
);
895 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
896 memcpy(pos
, &tmp
, sizeof(u16
));
898 /* TODO: needs a define here for << 2 */
899 *pos
++ = sband
->ht_info
.ampdu_factor
|
900 (sband
->ht_info
.ampdu_density
<< 2);
901 memcpy(pos
, sband
->ht_info
.supp_mcs_set
, 16);
904 kfree(ifsta
->assocreq_ies
);
905 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
906 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
907 if (ifsta
->assocreq_ies
)
908 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
910 ieee80211_sta_tx(dev
, skb
, 0);
914 static void ieee80211_send_deauth(struct net_device
*dev
,
915 struct ieee80211_if_sta
*ifsta
, u16 reason
)
917 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
919 struct ieee80211_mgmt
*mgmt
;
921 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
923 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
924 "frame\n", dev
->name
);
927 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
929 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
931 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
932 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
933 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
934 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
935 IEEE80211_STYPE_DEAUTH
);
937 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
939 ieee80211_sta_tx(dev
, skb
, 0);
943 static void ieee80211_send_disassoc(struct net_device
*dev
,
944 struct ieee80211_if_sta
*ifsta
, u16 reason
)
946 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
948 struct ieee80211_mgmt
*mgmt
;
950 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
952 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
953 "frame\n", dev
->name
);
956 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
958 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
960 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
961 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
962 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
963 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
964 IEEE80211_STYPE_DISASSOC
);
966 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
968 ieee80211_sta_tx(dev
, skb
, 0);
972 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
973 struct ieee80211_if_sta
*ifsta
)
975 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
976 struct ieee80211_sta_bss
*bss
;
981 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
984 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
985 local
->hw
.conf
.channel
->center_freq
,
986 ifsta
->ssid
, ifsta
->ssid_len
);
990 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
991 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
992 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
994 ieee80211_rx_bss_put(local
, bss
);
996 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
1003 static void ieee80211_associate(struct net_device
*dev
,
1004 struct ieee80211_if_sta
*ifsta
)
1006 DECLARE_MAC_BUF(mac
);
1008 ifsta
->assoc_tries
++;
1009 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
1010 printk(KERN_DEBUG
"%s: association with AP %s"
1012 dev
->name
, print_mac(mac
, ifsta
->bssid
));
1013 ifsta
->state
= IEEE80211_DISABLED
;
1017 ifsta
->state
= IEEE80211_ASSOCIATE
;
1018 printk(KERN_DEBUG
"%s: associate with AP %s\n",
1019 dev
->name
, print_mac(mac
, ifsta
->bssid
));
1020 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
1021 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
1022 "mixed-cell disabled - abort association\n", dev
->name
);
1023 ifsta
->state
= IEEE80211_DISABLED
;
1027 ieee80211_send_assoc(dev
, ifsta
);
1029 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
1033 static void ieee80211_associated(struct net_device
*dev
,
1034 struct ieee80211_if_sta
*ifsta
)
1036 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1037 struct sta_info
*sta
;
1039 DECLARE_MAC_BUF(mac
);
1041 /* TODO: start monitoring current AP signal quality and number of
1042 * missed beacons. Scan other channels every now and then and search
1043 * for better APs. */
1044 /* TODO: remove expired BSSes */
1046 ifsta
->state
= IEEE80211_ASSOCIATED
;
1050 sta
= sta_info_get(local
, ifsta
->bssid
);
1052 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
1053 dev
->name
, print_mac(mac
, ifsta
->bssid
));
1057 if (time_after(jiffies
,
1058 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
1059 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
1060 printk(KERN_DEBUG
"%s: No ProbeResp from "
1061 "current AP %s - assume out of "
1063 dev
->name
, print_mac(mac
, ifsta
->bssid
));
1065 sta_info_unlink(&sta
);
1067 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
1069 local
->scan_ssid_len
);
1070 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
1072 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
1073 if (time_after(jiffies
, ifsta
->last_probe
+
1074 IEEE80211_PROBE_INTERVAL
)) {
1075 ifsta
->last_probe
= jiffies
;
1076 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
1085 if (disassoc
&& sta
)
1086 sta_info_destroy(sta
);
1089 ifsta
->state
= IEEE80211_DISABLED
;
1090 ieee80211_set_associated(dev
, ifsta
, 0);
1092 mod_timer(&ifsta
->timer
, jiffies
+
1093 IEEE80211_MONITORING_INTERVAL
);
1098 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
1099 u8
*ssid
, size_t ssid_len
)
1101 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1102 struct ieee80211_supported_band
*sband
;
1103 struct sk_buff
*skb
;
1104 struct ieee80211_mgmt
*mgmt
;
1105 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
1108 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
1110 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
1111 "request\n", dev
->name
);
1114 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1116 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1117 memset(mgmt
, 0, 24);
1118 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1119 IEEE80211_STYPE_PROBE_REQ
);
1120 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1122 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
1123 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
1125 memset(mgmt
->da
, 0xff, ETH_ALEN
);
1126 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
1128 pos
= skb_put(skb
, 2 + ssid_len
);
1129 *pos
++ = WLAN_EID_SSID
;
1131 memcpy(pos
, ssid
, ssid_len
);
1133 supp_rates
= skb_put(skb
, 2);
1134 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
1136 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
1138 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
1139 struct ieee80211_rate
*rate
= &sband
->bitrates
[i
];
1141 pos
= skb_put(skb
, 1);
1143 } else if (supp_rates
[1] == 8) {
1144 esupp_rates
= skb_put(skb
, 3);
1145 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
1147 pos
= &esupp_rates
[2];
1149 pos
= skb_put(skb
, 1);
1152 *pos
= rate
->bitrate
/ 5;
1155 ieee80211_sta_tx(dev
, skb
, 0);
1159 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
1161 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1162 if (!sdata
|| !sdata
->default_key
||
1163 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
1169 static void ieee80211_auth_completed(struct net_device
*dev
,
1170 struct ieee80211_if_sta
*ifsta
)
1172 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
1173 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
1174 ieee80211_associate(dev
, ifsta
);
1178 static void ieee80211_auth_challenge(struct net_device
*dev
,
1179 struct ieee80211_if_sta
*ifsta
,
1180 struct ieee80211_mgmt
*mgmt
,
1184 struct ieee802_11_elems elems
;
1186 pos
= mgmt
->u
.auth
.variable
;
1187 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1188 if (!elems
.challenge
)
1190 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
1191 elems
.challenge_len
+ 2, 1);
1194 static void ieee80211_send_addba_resp(struct net_device
*dev
, u8
*da
, u16 tid
,
1195 u8 dialog_token
, u16 status
, u16 policy
,
1196 u16 buf_size
, u16 timeout
)
1198 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1199 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1200 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1201 struct sk_buff
*skb
;
1202 struct ieee80211_mgmt
*mgmt
;
1205 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
);
1208 printk(KERN_DEBUG
"%s: failed to allocate buffer "
1209 "for addba resp frame\n", dev
->name
);
1213 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1214 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1215 memset(mgmt
, 0, 24);
1216 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1217 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1218 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1219 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1221 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1222 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1223 IEEE80211_STYPE_ACTION
);
1225 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
1226 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1227 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
1228 mgmt
->u
.action
.u
.addba_resp
.dialog_token
= dialog_token
;
1230 capab
= (u16
)(policy
<< 1); /* bit 1 aggregation policy */
1231 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1232 capab
|= (u16
)(buf_size
<< 6); /* bit 15:6 max size of aggregation */
1234 mgmt
->u
.action
.u
.addba_resp
.capab
= cpu_to_le16(capab
);
1235 mgmt
->u
.action
.u
.addba_resp
.timeout
= cpu_to_le16(timeout
);
1236 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
1238 ieee80211_sta_tx(dev
, skb
, 0);
1243 void ieee80211_send_addba_request(struct net_device
*dev
, const u8
*da
,
1244 u16 tid
, u8 dialog_token
, u16 start_seq_num
,
1245 u16 agg_size
, u16 timeout
)
1247 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1248 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1249 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1250 struct sk_buff
*skb
;
1251 struct ieee80211_mgmt
*mgmt
;
1254 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
);
1257 printk(KERN_ERR
"%s: failed to allocate buffer "
1258 "for addba request frame\n", dev
->name
);
1261 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1262 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1263 memset(mgmt
, 0, 24);
1264 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1265 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1266 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1267 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1269 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1271 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1272 IEEE80211_STYPE_ACTION
);
1274 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_req
));
1276 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1277 mgmt
->u
.action
.u
.addba_req
.action_code
= WLAN_ACTION_ADDBA_REQ
;
1279 mgmt
->u
.action
.u
.addba_req
.dialog_token
= dialog_token
;
1280 capab
= (u16
)(1 << 1); /* bit 1 aggregation policy */
1281 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1282 capab
|= (u16
)(agg_size
<< 6); /* bit 15:6 max size of aggergation */
1284 mgmt
->u
.action
.u
.addba_req
.capab
= cpu_to_le16(capab
);
1286 mgmt
->u
.action
.u
.addba_req
.timeout
= cpu_to_le16(timeout
);
1287 mgmt
->u
.action
.u
.addba_req
.start_seq_num
=
1288 cpu_to_le16(start_seq_num
<< 4);
1290 ieee80211_sta_tx(dev
, skb
, 0);
1293 static void ieee80211_sta_process_addba_request(struct net_device
*dev
,
1294 struct ieee80211_mgmt
*mgmt
,
1297 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1298 struct ieee80211_hw
*hw
= &local
->hw
;
1299 struct ieee80211_conf
*conf
= &hw
->conf
;
1300 struct sta_info
*sta
;
1301 struct tid_ampdu_rx
*tid_agg_rx
;
1302 u16 capab
, tid
, timeout
, ba_policy
, buf_size
, start_seq_num
, status
;
1304 int ret
= -EOPNOTSUPP
;
1305 DECLARE_MAC_BUF(mac
);
1309 sta
= sta_info_get(local
, mgmt
->sa
);
1315 /* extract session parameters from addba request frame */
1316 dialog_token
= mgmt
->u
.action
.u
.addba_req
.dialog_token
;
1317 timeout
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.timeout
);
1319 le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.start_seq_num
) >> 4;
1321 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.capab
);
1322 ba_policy
= (capab
& IEEE80211_ADDBA_PARAM_POLICY_MASK
) >> 1;
1323 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1324 buf_size
= (capab
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
) >> 6;
1326 status
= WLAN_STATUS_REQUEST_DECLINED
;
1328 /* sanity check for incoming parameters:
1329 * check if configuration can support the BA policy
1330 * and if buffer size does not exceeds max value */
1331 if (((ba_policy
!= 1)
1332 && (!(conf
->ht_conf
.cap
& IEEE80211_HT_CAP_DELAY_BA
)))
1333 || (buf_size
> IEEE80211_MAX_AMPDU_BUF
)) {
1334 status
= WLAN_STATUS_INVALID_QOS_PARAM
;
1335 #ifdef CONFIG_MAC80211_HT_DEBUG
1336 if (net_ratelimit())
1337 printk(KERN_DEBUG
"AddBA Req with bad params from "
1338 "%s on tid %u. policy %d, buffer size %d\n",
1339 print_mac(mac
, mgmt
->sa
), tid
, ba_policy
,
1341 #endif /* CONFIG_MAC80211_HT_DEBUG */
1344 /* determine default buffer size */
1345 if (buf_size
== 0) {
1346 struct ieee80211_supported_band
*sband
;
1348 sband
= local
->hw
.wiphy
->bands
[conf
->channel
->band
];
1349 buf_size
= IEEE80211_MIN_AMPDU_BUF
;
1350 buf_size
= buf_size
<< sband
->ht_info
.ampdu_factor
;
1354 /* examine state machine */
1355 spin_lock_bh(&sta
->lock
);
1357 if (sta
->ampdu_mlme
.tid_state_rx
[tid
] != HT_AGG_STATE_IDLE
) {
1358 #ifdef CONFIG_MAC80211_HT_DEBUG
1359 if (net_ratelimit())
1360 printk(KERN_DEBUG
"unexpected AddBA Req from "
1362 print_mac(mac
, mgmt
->sa
), tid
);
1363 #endif /* CONFIG_MAC80211_HT_DEBUG */
1367 /* prepare A-MPDU MLME for Rx aggregation */
1368 sta
->ampdu_mlme
.tid_rx
[tid
] =
1369 kmalloc(sizeof(struct tid_ampdu_rx
), GFP_ATOMIC
);
1370 if (!sta
->ampdu_mlme
.tid_rx
[tid
]) {
1371 #ifdef CONFIG_MAC80211_HT_DEBUG
1372 if (net_ratelimit())
1373 printk(KERN_ERR
"allocate rx mlme to tid %d failed\n",
1379 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.function
=
1380 sta_rx_agg_session_timer_expired
;
1381 sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
.data
=
1382 (unsigned long)&sta
->timer_to_tid
[tid
];
1383 init_timer(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1385 tid_agg_rx
= sta
->ampdu_mlme
.tid_rx
[tid
];
1387 /* prepare reordering buffer */
1388 tid_agg_rx
->reorder_buf
=
1389 kmalloc(buf_size
* sizeof(struct sk_buff
*), GFP_ATOMIC
);
1390 if (!tid_agg_rx
->reorder_buf
) {
1391 #ifdef CONFIG_MAC80211_HT_DEBUG
1392 if (net_ratelimit())
1393 printk(KERN_ERR
"can not allocate reordering buffer "
1394 "to tid %d\n", tid
);
1396 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1399 memset(tid_agg_rx
->reorder_buf
, 0,
1400 buf_size
* sizeof(struct sk_buff
*));
1402 if (local
->ops
->ampdu_action
)
1403 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_START
,
1404 sta
->addr
, tid
, &start_seq_num
);
1405 #ifdef CONFIG_MAC80211_HT_DEBUG
1406 printk(KERN_DEBUG
"Rx A-MPDU request on tid %d result %d\n", tid
, ret
);
1407 #endif /* CONFIG_MAC80211_HT_DEBUG */
1410 kfree(tid_agg_rx
->reorder_buf
);
1412 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1416 /* change state and send addba resp */
1417 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_OPERATIONAL
;
1418 tid_agg_rx
->dialog_token
= dialog_token
;
1419 tid_agg_rx
->ssn
= start_seq_num
;
1420 tid_agg_rx
->head_seq_num
= start_seq_num
;
1421 tid_agg_rx
->buf_size
= buf_size
;
1422 tid_agg_rx
->timeout
= timeout
;
1423 tid_agg_rx
->stored_mpdu_num
= 0;
1424 status
= WLAN_STATUS_SUCCESS
;
1426 spin_unlock_bh(&sta
->lock
);
1429 ieee80211_send_addba_resp(sta
->sdata
->dev
, sta
->addr
, tid
,
1430 dialog_token
, status
, 1, buf_size
, timeout
);
1434 static void ieee80211_sta_process_addba_resp(struct net_device
*dev
,
1435 struct ieee80211_mgmt
*mgmt
,
1438 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1439 struct ieee80211_hw
*hw
= &local
->hw
;
1440 struct sta_info
*sta
;
1447 sta
= sta_info_get(local
, mgmt
->sa
);
1453 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.capab
);
1454 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1456 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1458 spin_lock_bh(&sta
->lock
);
1460 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1461 spin_unlock_bh(&sta
->lock
);
1462 goto addba_resp_exit
;
1465 if (mgmt
->u
.action
.u
.addba_resp
.dialog_token
!=
1466 sta
->ampdu_mlme
.tid_tx
[tid
]->dialog_token
) {
1467 spin_unlock_bh(&sta
->lock
);
1468 #ifdef CONFIG_MAC80211_HT_DEBUG
1469 printk(KERN_DEBUG
"wrong addBA response token, tid %d\n", tid
);
1470 #endif /* CONFIG_MAC80211_HT_DEBUG */
1471 goto addba_resp_exit
;
1474 del_timer_sync(&sta
->ampdu_mlme
.tid_tx
[tid
]->addba_resp_timer
);
1475 #ifdef CONFIG_MAC80211_HT_DEBUG
1476 printk(KERN_DEBUG
"switched off addBA timer for tid %d \n", tid
);
1477 #endif /* CONFIG_MAC80211_HT_DEBUG */
1478 if (le16_to_cpu(mgmt
->u
.action
.u
.addba_resp
.status
)
1479 == WLAN_STATUS_SUCCESS
) {
1480 *state
|= HT_ADDBA_RECEIVED_MSK
;
1481 sta
->ampdu_mlme
.addba_req_num
[tid
] = 0;
1483 if (*state
== HT_AGG_STATE_OPERATIONAL
)
1484 ieee80211_wake_queue(hw
, sta
->tid_to_tx_q
[tid
]);
1486 spin_unlock_bh(&sta
->lock
);
1488 sta
->ampdu_mlme
.addba_req_num
[tid
]++;
1489 /* this will allow the state check in stop_BA_session */
1490 *state
= HT_AGG_STATE_OPERATIONAL
;
1491 spin_unlock_bh(&sta
->lock
);
1492 ieee80211_stop_tx_ba_session(hw
, sta
->addr
, tid
,
1493 WLAN_BACK_INITIATOR
);
1500 void ieee80211_send_delba(struct net_device
*dev
, const u8
*da
, u16 tid
,
1501 u16 initiator
, u16 reason_code
)
1503 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1504 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1505 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1506 struct sk_buff
*skb
;
1507 struct ieee80211_mgmt
*mgmt
;
1510 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
);
1513 printk(KERN_ERR
"%s: failed to allocate buffer "
1514 "for delba frame\n", dev
->name
);
1518 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1519 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1520 memset(mgmt
, 0, 24);
1521 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1522 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1523 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_AP
)
1524 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1526 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1527 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1528 IEEE80211_STYPE_ACTION
);
1530 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.delba
));
1532 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1533 mgmt
->u
.action
.u
.delba
.action_code
= WLAN_ACTION_DELBA
;
1534 params
= (u16
)(initiator
<< 11); /* bit 11 initiator */
1535 params
|= (u16
)(tid
<< 12); /* bit 15:12 TID number */
1537 mgmt
->u
.action
.u
.delba
.params
= cpu_to_le16(params
);
1538 mgmt
->u
.action
.u
.delba
.reason_code
= cpu_to_le16(reason_code
);
1540 ieee80211_sta_tx(dev
, skb
, 0);
1543 void ieee80211_send_bar(struct net_device
*dev
, u8
*ra
, u16 tid
, u16 ssn
)
1545 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1546 struct sk_buff
*skb
;
1547 struct ieee80211_bar
*bar
;
1548 u16 bar_control
= 0;
1550 skb
= dev_alloc_skb(sizeof(*bar
) + local
->hw
.extra_tx_headroom
);
1552 printk(KERN_ERR
"%s: failed to allocate buffer for "
1553 "bar frame\n", dev
->name
);
1556 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1557 bar
= (struct ieee80211_bar
*)skb_put(skb
, sizeof(*bar
));
1558 memset(bar
, 0, sizeof(*bar
));
1559 bar
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_CTL
,
1560 IEEE80211_STYPE_BACK_REQ
);
1561 memcpy(bar
->ra
, ra
, ETH_ALEN
);
1562 memcpy(bar
->ta
, dev
->dev_addr
, ETH_ALEN
);
1563 bar_control
|= (u16
)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL
;
1564 bar_control
|= (u16
)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA
;
1565 bar_control
|= (u16
)(tid
<< 12);
1566 bar
->control
= cpu_to_le16(bar_control
);
1567 bar
->start_seq_num
= cpu_to_le16(ssn
);
1569 ieee80211_sta_tx(dev
, skb
, 0);
1572 void ieee80211_sta_stop_rx_ba_session(struct net_device
*dev
, u8
*ra
, u16 tid
,
1573 u16 initiator
, u16 reason
)
1575 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1576 struct ieee80211_hw
*hw
= &local
->hw
;
1577 struct sta_info
*sta
;
1579 DECLARE_MAC_BUF(mac
);
1583 sta
= sta_info_get(local
, ra
);
1589 /* check if TID is in operational state */
1590 spin_lock_bh(&sta
->lock
);
1591 if (sta
->ampdu_mlme
.tid_state_rx
[tid
]
1592 != HT_AGG_STATE_OPERATIONAL
) {
1593 spin_unlock_bh(&sta
->lock
);
1597 sta
->ampdu_mlme
.tid_state_rx
[tid
] =
1598 HT_AGG_STATE_REQ_STOP_BA_MSK
|
1599 (initiator
<< HT_AGG_STATE_INITIATOR_SHIFT
);
1600 spin_unlock_bh(&sta
->lock
);
1602 /* stop HW Rx aggregation. ampdu_action existence
1603 * already verified in session init so we add the BUG_ON */
1604 BUG_ON(!local
->ops
->ampdu_action
);
1606 #ifdef CONFIG_MAC80211_HT_DEBUG
1607 printk(KERN_DEBUG
"Rx BA session stop requested for %s tid %u\n",
1608 print_mac(mac
, ra
), tid
);
1609 #endif /* CONFIG_MAC80211_HT_DEBUG */
1611 ret
= local
->ops
->ampdu_action(hw
, IEEE80211_AMPDU_RX_STOP
,
1614 printk(KERN_DEBUG
"HW problem - can not stop rx "
1615 "aggregation for tid %d\n", tid
);
1617 /* shutdown timer has not expired */
1618 if (initiator
!= WLAN_BACK_TIMER
)
1619 del_timer_sync(&sta
->ampdu_mlme
.tid_rx
[tid
]->session_timer
);
1621 /* check if this is a self generated aggregation halt */
1622 if (initiator
== WLAN_BACK_RECIPIENT
|| initiator
== WLAN_BACK_TIMER
)
1623 ieee80211_send_delba(dev
, ra
, tid
, 0, reason
);
1625 /* free the reordering buffer */
1626 for (i
= 0; i
< sta
->ampdu_mlme
.tid_rx
[tid
]->buf_size
; i
++) {
1627 if (sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]) {
1628 /* release the reordered frames */
1629 dev_kfree_skb(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
]);
1630 sta
->ampdu_mlme
.tid_rx
[tid
]->stored_mpdu_num
--;
1631 sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
[i
] = NULL
;
1634 /* free resources */
1635 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]->reorder_buf
);
1636 kfree(sta
->ampdu_mlme
.tid_rx
[tid
]);
1637 sta
->ampdu_mlme
.tid_rx
[tid
] = NULL
;
1638 sta
->ampdu_mlme
.tid_state_rx
[tid
] = HT_AGG_STATE_IDLE
;
1644 static void ieee80211_sta_process_delba(struct net_device
*dev
,
1645 struct ieee80211_mgmt
*mgmt
, size_t len
)
1647 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1648 struct sta_info
*sta
;
1651 DECLARE_MAC_BUF(mac
);
1655 sta
= sta_info_get(local
, mgmt
->sa
);
1661 params
= le16_to_cpu(mgmt
->u
.action
.u
.delba
.params
);
1662 tid
= (params
& IEEE80211_DELBA_PARAM_TID_MASK
) >> 12;
1663 initiator
= (params
& IEEE80211_DELBA_PARAM_INITIATOR_MASK
) >> 11;
1665 #ifdef CONFIG_MAC80211_HT_DEBUG
1666 if (net_ratelimit())
1667 printk(KERN_DEBUG
"delba from %s (%s) tid %d reason code %d\n",
1668 print_mac(mac
, mgmt
->sa
),
1669 initiator
? "initiator" : "recipient", tid
,
1670 mgmt
->u
.action
.u
.delba
.reason_code
);
1671 #endif /* CONFIG_MAC80211_HT_DEBUG */
1673 if (initiator
== WLAN_BACK_INITIATOR
)
1674 ieee80211_sta_stop_rx_ba_session(dev
, sta
->addr
, tid
,
1675 WLAN_BACK_INITIATOR
, 0);
1676 else { /* WLAN_BACK_RECIPIENT */
1677 spin_lock_bh(&sta
->lock
);
1678 sta
->ampdu_mlme
.tid_state_tx
[tid
] =
1679 HT_AGG_STATE_OPERATIONAL
;
1680 spin_unlock_bh(&sta
->lock
);
1681 ieee80211_stop_tx_ba_session(&local
->hw
, sta
->addr
, tid
,
1682 WLAN_BACK_RECIPIENT
);
1688 * After sending add Block Ack request we activated a timer until
1689 * add Block Ack response will arrive from the recipient.
1690 * If this timer expires sta_addba_resp_timer_expired will be executed.
1692 void sta_addba_resp_timer_expired(unsigned long data
)
1694 /* not an elegant detour, but there is no choice as the timer passes
1695 * only one argument, and both sta_info and TID are needed, so init
1696 * flow in sta_info_create gives the TID as data, while the timer_to_id
1697 * array gives the sta through container_of */
1698 u16 tid
= *(u8
*)data
;
1699 struct sta_info
*temp_sta
= container_of((void *)data
,
1700 struct sta_info
, timer_to_tid
[tid
]);
1702 struct ieee80211_local
*local
= temp_sta
->local
;
1703 struct ieee80211_hw
*hw
= &local
->hw
;
1704 struct sta_info
*sta
;
1709 sta
= sta_info_get(local
, temp_sta
->addr
);
1715 state
= &sta
->ampdu_mlme
.tid_state_tx
[tid
];
1716 /* check if the TID waits for addBA response */
1717 spin_lock_bh(&sta
->lock
);
1718 if (!(*state
& HT_ADDBA_REQUESTED_MSK
)) {
1719 spin_unlock_bh(&sta
->lock
);
1720 *state
= HT_AGG_STATE_IDLE
;
1721 #ifdef CONFIG_MAC80211_HT_DEBUG
1722 printk(KERN_DEBUG
"timer expired on tid %d but we are not "
1723 "expecting addBA response there", tid
);
1725 goto timer_expired_exit
;
1728 #ifdef CONFIG_MAC80211_HT_DEBUG
1729 printk(KERN_DEBUG
"addBA response timer expired on tid %d\n", tid
);
1732 /* go through the state check in stop_BA_session */
1733 *state
= HT_AGG_STATE_OPERATIONAL
;
1734 spin_unlock_bh(&sta
->lock
);
1735 ieee80211_stop_tx_ba_session(hw
, temp_sta
->addr
, tid
,
1736 WLAN_BACK_INITIATOR
);
1743 * After accepting the AddBA Request we activated a timer,
1744 * resetting it after each frame that arrives from the originator.
1745 * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
1747 static void sta_rx_agg_session_timer_expired(unsigned long data
)
1749 /* not an elegant detour, but there is no choice as the timer passes
1750 * only one argument, and various sta_info are needed here, so init
1751 * flow in sta_info_create gives the TID as data, while the timer_to_id
1752 * array gives the sta through container_of */
1753 u8
*ptid
= (u8
*)data
;
1754 u8
*timer_to_id
= ptid
- *ptid
;
1755 struct sta_info
*sta
= container_of(timer_to_id
, struct sta_info
,
1758 #ifdef CONFIG_MAC80211_HT_DEBUG
1759 printk(KERN_DEBUG
"rx session timer expired on tid %d\n", (u16
)*ptid
);
1761 ieee80211_sta_stop_rx_ba_session(sta
->sdata
->dev
, sta
->addr
,
1762 (u16
)*ptid
, WLAN_BACK_TIMER
,
1763 WLAN_REASON_QSTA_TIMEOUT
);
1766 void ieee80211_sta_tear_down_BA_sessions(struct net_device
*dev
, u8
*addr
)
1768 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1771 for (i
= 0; i
< STA_TID_NUM
; i
++) {
1772 ieee80211_stop_tx_ba_session(&local
->hw
, addr
, i
,
1773 WLAN_BACK_INITIATOR
);
1774 ieee80211_sta_stop_rx_ba_session(dev
, addr
, i
,
1775 WLAN_BACK_RECIPIENT
,
1776 WLAN_REASON_QSTA_LEAVE_QBSS
);
1780 static void ieee80211_send_refuse_measurement_request(struct net_device
*dev
,
1781 struct ieee80211_msrment_ie
*request_ie
,
1782 const u8
*da
, const u8
*bssid
,
1785 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1786 struct sk_buff
*skb
;
1787 struct ieee80211_mgmt
*msr_report
;
1789 skb
= dev_alloc_skb(sizeof(*msr_report
) + local
->hw
.extra_tx_headroom
+
1790 sizeof(struct ieee80211_msrment_ie
));
1793 printk(KERN_ERR
"%s: failed to allocate buffer for "
1794 "measurement report frame\n", dev
->name
);
1798 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1799 msr_report
= (struct ieee80211_mgmt
*)skb_put(skb
, 24);
1800 memset(msr_report
, 0, 24);
1801 memcpy(msr_report
->da
, da
, ETH_ALEN
);
1802 memcpy(msr_report
->sa
, dev
->dev_addr
, ETH_ALEN
);
1803 memcpy(msr_report
->bssid
, bssid
, ETH_ALEN
);
1804 msr_report
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1805 IEEE80211_STYPE_ACTION
);
1807 skb_put(skb
, 1 + sizeof(msr_report
->u
.action
.u
.measurement
));
1808 msr_report
->u
.action
.category
= WLAN_CATEGORY_SPECTRUM_MGMT
;
1809 msr_report
->u
.action
.u
.measurement
.action_code
=
1810 WLAN_ACTION_SPCT_MSR_RPRT
;
1811 msr_report
->u
.action
.u
.measurement
.dialog_token
= dialog_token
;
1813 msr_report
->u
.action
.u
.measurement
.element_id
= WLAN_EID_MEASURE_REPORT
;
1814 msr_report
->u
.action
.u
.measurement
.length
=
1815 sizeof(struct ieee80211_msrment_ie
);
1817 memset(&msr_report
->u
.action
.u
.measurement
.msr_elem
, 0,
1818 sizeof(struct ieee80211_msrment_ie
));
1819 msr_report
->u
.action
.u
.measurement
.msr_elem
.token
= request_ie
->token
;
1820 msr_report
->u
.action
.u
.measurement
.msr_elem
.mode
|=
1821 IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED
;
1822 msr_report
->u
.action
.u
.measurement
.msr_elem
.type
= request_ie
->type
;
1824 ieee80211_sta_tx(dev
, skb
, 0);
1827 static void ieee80211_sta_process_measurement_req(struct net_device
*dev
,
1828 struct ieee80211_mgmt
*mgmt
,
1832 * Ignoring measurement request is spec violation.
1833 * Mandatory measurements must be reported optional
1834 * measurements might be refused or reported incapable
1835 * For now just refuse
1836 * TODO: Answer basic measurement as unmeasured
1838 ieee80211_send_refuse_measurement_request(dev
,
1839 &mgmt
->u
.action
.u
.measurement
.msr_elem
,
1840 mgmt
->sa
, mgmt
->bssid
,
1841 mgmt
->u
.action
.u
.measurement
.dialog_token
);
1845 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1846 struct ieee80211_if_sta
*ifsta
,
1847 struct ieee80211_mgmt
*mgmt
,
1850 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1851 u16 auth_alg
, auth_transaction
, status_code
;
1852 DECLARE_MAC_BUF(mac
);
1854 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1855 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
1861 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1862 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0)
1865 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
1866 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
1869 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1870 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1871 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1873 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
1875 * IEEE 802.11 standard does not require authentication in IBSS
1876 * networks and most implementations do not seem to use it.
1877 * However, try to reply to authentication attempts if someone
1878 * has actually implemented this.
1880 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1)
1882 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1885 if (auth_alg
!= ifsta
->auth_alg
||
1886 auth_transaction
!= ifsta
->auth_transaction
)
1889 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1890 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1892 const int num_algs
= ARRAY_SIZE(algs
);
1894 algs
[0] = algs
[1] = algs
[2] = 0xff;
1895 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1896 algs
[0] = WLAN_AUTH_OPEN
;
1897 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1898 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1899 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1900 algs
[2] = WLAN_AUTH_LEAP
;
1901 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1903 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1907 for (i
= 0; i
< num_algs
; i
++) {
1909 if (pos
>= num_algs
)
1911 if (algs
[pos
] == ifsta
->auth_alg
||
1914 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1915 !ieee80211_sta_wep_configured(dev
))
1917 ifsta
->auth_alg
= algs
[pos
];
1924 switch (ifsta
->auth_alg
) {
1925 case WLAN_AUTH_OPEN
:
1926 case WLAN_AUTH_LEAP
:
1927 ieee80211_auth_completed(dev
, ifsta
);
1929 case WLAN_AUTH_SHARED_KEY
:
1930 if (ifsta
->auth_transaction
== 4)
1931 ieee80211_auth_completed(dev
, ifsta
);
1933 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1939 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1940 struct ieee80211_if_sta
*ifsta
,
1941 struct ieee80211_mgmt
*mgmt
,
1945 DECLARE_MAC_BUF(mac
);
1950 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
))
1953 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1955 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
)
1956 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1958 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1959 ifsta
->state
== IEEE80211_ASSOCIATE
||
1960 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1961 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1962 mod_timer(&ifsta
->timer
, jiffies
+
1963 IEEE80211_RETRY_AUTH_INTERVAL
);
1966 ieee80211_set_disassoc(dev
, ifsta
, 1);
1967 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1971 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1972 struct ieee80211_if_sta
*ifsta
,
1973 struct ieee80211_mgmt
*mgmt
,
1977 DECLARE_MAC_BUF(mac
);
1982 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
))
1985 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1987 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1988 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1990 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1991 ifsta
->state
= IEEE80211_ASSOCIATE
;
1992 mod_timer(&ifsta
->timer
, jiffies
+
1993 IEEE80211_RETRY_AUTH_INTERVAL
);
1996 ieee80211_set_disassoc(dev
, ifsta
, 0);
2000 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
2001 struct ieee80211_if_sta
*ifsta
,
2002 struct ieee80211_mgmt
*mgmt
,
2006 struct ieee80211_local
*local
= sdata
->local
;
2007 struct net_device
*dev
= sdata
->dev
;
2008 struct ieee80211_supported_band
*sband
;
2009 struct sta_info
*sta
;
2010 u64 rates
, basic_rates
;
2011 u16 capab_info
, status_code
, aid
;
2012 struct ieee802_11_elems elems
;
2013 struct ieee80211_bss_conf
*bss_conf
= &sdata
->bss_conf
;
2016 DECLARE_MAC_BUF(mac
);
2017 bool have_higher_than_11mbit
= false;
2019 /* AssocResp and ReassocResp have identical structure, so process both
2020 * of them in this function. */
2022 if (ifsta
->state
!= IEEE80211_ASSOCIATE
)
2028 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0)
2031 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
2032 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
2033 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
2035 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
2036 "status=%d aid=%d)\n",
2037 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
2038 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
2040 if (status_code
!= WLAN_STATUS_SUCCESS
) {
2041 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
2042 dev
->name
, status_code
);
2043 /* if this was a reassociation, ensure we try a "full"
2044 * association next time. This works around some broken APs
2045 * which do not correctly reject reassociation requests. */
2046 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
2050 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
2051 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
2052 "set\n", dev
->name
, aid
);
2053 aid
&= ~(BIT(15) | BIT(14));
2055 pos
= mgmt
->u
.assoc_resp
.variable
;
2056 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
2058 if (!elems
.supp_rates
) {
2059 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
2064 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
2066 ifsta
->ap_capab
= capab_info
;
2068 kfree(ifsta
->assocresp_ies
);
2069 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
2070 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
2071 if (ifsta
->assocresp_ies
)
2072 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
2076 /* Add STA entry for the AP */
2077 sta
= sta_info_get(local
, ifsta
->bssid
);
2079 struct ieee80211_sta_bss
*bss
;
2082 sta
= sta_info_alloc(sdata
, ifsta
->bssid
, GFP_ATOMIC
);
2084 printk(KERN_DEBUG
"%s: failed to alloc STA entry for"
2085 " the AP\n", dev
->name
);
2089 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
2090 local
->hw
.conf
.channel
->center_freq
,
2091 ifsta
->ssid
, ifsta
->ssid_len
);
2093 sta
->last_signal
= bss
->signal
;
2094 sta
->last_qual
= bss
->qual
;
2095 sta
->last_noise
= bss
->noise
;
2096 ieee80211_rx_bss_put(local
, bss
);
2099 err
= sta_info_insert(sta
);
2101 printk(KERN_DEBUG
"%s: failed to insert STA entry for"
2102 " the AP (error %d)\n", dev
->name
, err
);
2106 /* update new sta with its last rx activity */
2107 sta
->last_rx
= jiffies
;
2111 * FIXME: Do we really need to update the sta_info's information here?
2112 * We already know about the AP (we found it in our list) so it
2113 * should already be filled with the right info, no?
2114 * As is stands, all this is racy because typically we assume
2115 * the information that is filled in here (except flags) doesn't
2116 * change while a STA structure is alive. As such, it should move
2117 * to between the sta_info_alloc() and sta_info_insert() above.
2120 set_sta_flags(sta
, WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
|
2121 WLAN_STA_AUTHORIZED
);
2125 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2127 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
2128 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
2131 have_higher_than_11mbit
= true;
2133 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2134 if (sband
->bitrates
[j
].bitrate
== rate
)
2136 if (elems
.supp_rates
[i
] & 0x80)
2137 basic_rates
|= BIT(j
);
2141 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
2142 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
2145 have_higher_than_11mbit
= true;
2147 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2148 if (sband
->bitrates
[j
].bitrate
== rate
)
2150 if (elems
.ext_supp_rates
[i
] & 0x80)
2151 basic_rates
|= BIT(j
);
2155 sta
->supp_rates
[local
->hw
.conf
.channel
->band
] = rates
;
2156 sdata
->basic_rates
= basic_rates
;
2158 /* cf. IEEE 802.11 9.2.12 */
2159 if (local
->hw
.conf
.channel
->band
== IEEE80211_BAND_2GHZ
&&
2160 have_higher_than_11mbit
)
2161 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
2163 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
2165 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&& elems
.wmm_param
&&
2166 (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
2167 struct ieee80211_ht_bss_info bss_info
;
2168 ieee80211_ht_cap_ie_to_ht_info(
2169 (struct ieee80211_ht_cap
*)
2170 elems
.ht_cap_elem
, &sta
->ht_info
);
2171 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2172 (struct ieee80211_ht_addt_info
*)
2173 elems
.ht_info_elem
, &bss_info
);
2174 ieee80211_handle_ht(local
, 1, &sta
->ht_info
, &bss_info
);
2177 rate_control_rate_init(sta
, local
);
2179 if (elems
.wmm_param
) {
2180 set_sta_flags(sta
, WLAN_STA_WME
);
2182 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2183 elems
.wmm_param_len
);
2187 /* set AID and assoc capability,
2188 * ieee80211_set_associated() will tell the driver */
2189 bss_conf
->aid
= aid
;
2190 bss_conf
->assoc_capability
= capab_info
;
2191 ieee80211_set_associated(dev
, ifsta
, 1);
2193 ieee80211_associated(dev
, ifsta
);
2197 /* Caller must hold local->sta_bss_lock */
2198 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
2199 struct ieee80211_sta_bss
*bss
)
2201 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2204 if (bss_mesh_cfg(bss
))
2205 hash_idx
= mesh_id_hash(bss_mesh_id(bss
),
2206 bss_mesh_id_len(bss
));
2208 hash_idx
= STA_HASH(bss
->bssid
);
2210 bss
->hnext
= local
->sta_bss_hash
[hash_idx
];
2211 local
->sta_bss_hash
[hash_idx
] = bss
;
2215 /* Caller must hold local->sta_bss_lock */
2216 static void __ieee80211_rx_bss_hash_del(struct ieee80211_local
*local
,
2217 struct ieee80211_sta_bss
*bss
)
2219 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
2220 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
2224 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
2227 prev
->hnext
= bss
->hnext
;
2236 static struct ieee80211_sta_bss
*
2237 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int freq
,
2238 u8
*ssid
, u8 ssid_len
)
2240 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2241 struct ieee80211_sta_bss
*bss
;
2243 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2246 atomic_inc(&bss
->users
);
2247 atomic_inc(&bss
->users
);
2248 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
2250 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
2251 memcpy(bss
->ssid
, ssid
, ssid_len
);
2252 bss
->ssid_len
= ssid_len
;
2255 spin_lock_bh(&local
->sta_bss_lock
);
2256 /* TODO: order by RSSI? */
2257 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2258 __ieee80211_rx_bss_hash_add(dev
, bss
);
2259 spin_unlock_bh(&local
->sta_bss_lock
);
2263 static struct ieee80211_sta_bss
*
2264 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int freq
,
2265 u8
*ssid
, u8 ssid_len
)
2267 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2268 struct ieee80211_sta_bss
*bss
;
2270 spin_lock_bh(&local
->sta_bss_lock
);
2271 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
2273 if (!bss_mesh_cfg(bss
) &&
2274 !memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
2275 bss
->freq
== freq
&&
2276 bss
->ssid_len
== ssid_len
&&
2277 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
2278 atomic_inc(&bss
->users
);
2283 spin_unlock_bh(&local
->sta_bss_lock
);
2287 #ifdef CONFIG_MAC80211_MESH
2288 static struct ieee80211_sta_bss
*
2289 ieee80211_rx_mesh_bss_get(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2290 u8
*mesh_cfg
, int freq
)
2292 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2293 struct ieee80211_sta_bss
*bss
;
2295 spin_lock_bh(&local
->sta_bss_lock
);
2296 bss
= local
->sta_bss_hash
[mesh_id_hash(mesh_id
, mesh_id_len
)];
2298 if (bss_mesh_cfg(bss
) &&
2299 !memcmp(bss_mesh_cfg(bss
), mesh_cfg
, MESH_CFG_CMP_LEN
) &&
2300 bss
->freq
== freq
&&
2301 mesh_id_len
== bss
->mesh_id_len
&&
2302 (mesh_id_len
== 0 || !memcmp(bss
->mesh_id
, mesh_id
,
2304 atomic_inc(&bss
->users
);
2309 spin_unlock_bh(&local
->sta_bss_lock
);
2313 static struct ieee80211_sta_bss
*
2314 ieee80211_rx_mesh_bss_add(struct net_device
*dev
, u8
*mesh_id
, int mesh_id_len
,
2315 u8
*mesh_cfg
, int mesh_config_len
, int freq
)
2317 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2318 struct ieee80211_sta_bss
*bss
;
2320 if (mesh_config_len
!= MESH_CFG_LEN
)
2323 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
2327 bss
->mesh_cfg
= kmalloc(MESH_CFG_CMP_LEN
, GFP_ATOMIC
);
2328 if (!bss
->mesh_cfg
) {
2333 if (mesh_id_len
&& mesh_id_len
<= IEEE80211_MAX_MESH_ID_LEN
) {
2334 bss
->mesh_id
= kmalloc(mesh_id_len
, GFP_ATOMIC
);
2335 if (!bss
->mesh_id
) {
2336 kfree(bss
->mesh_cfg
);
2340 memcpy(bss
->mesh_id
, mesh_id
, mesh_id_len
);
2343 atomic_inc(&bss
->users
);
2344 atomic_inc(&bss
->users
);
2345 memcpy(bss
->mesh_cfg
, mesh_cfg
, MESH_CFG_CMP_LEN
);
2346 bss
->mesh_id_len
= mesh_id_len
;
2348 spin_lock_bh(&local
->sta_bss_lock
);
2349 /* TODO: order by RSSI? */
2350 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
2351 __ieee80211_rx_bss_hash_add(dev
, bss
);
2352 spin_unlock_bh(&local
->sta_bss_lock
);
2357 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
2363 kfree(bss
->ht_add_ie
);
2364 kfree(bss_mesh_id(bss
));
2365 kfree(bss_mesh_cfg(bss
));
2370 static void ieee80211_rx_bss_put(struct ieee80211_local
*local
,
2371 struct ieee80211_sta_bss
*bss
)
2374 if (!atomic_dec_and_lock(&bss
->users
, &local
->sta_bss_lock
)) {
2379 __ieee80211_rx_bss_hash_del(local
, bss
);
2380 list_del(&bss
->list
);
2381 spin_unlock_bh(&local
->sta_bss_lock
);
2382 ieee80211_rx_bss_free(bss
);
2386 void ieee80211_rx_bss_list_init(struct ieee80211_local
*local
)
2388 spin_lock_init(&local
->sta_bss_lock
);
2389 INIT_LIST_HEAD(&local
->sta_bss_list
);
2393 void ieee80211_rx_bss_list_deinit(struct ieee80211_local
*local
)
2395 struct ieee80211_sta_bss
*bss
, *tmp
;
2397 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
2398 ieee80211_rx_bss_put(local
, bss
);
2402 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2403 struct ieee80211_if_sta
*ifsta
,
2404 struct ieee80211_sta_bss
*bss
)
2406 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2407 int res
, rates
, i
, j
;
2408 struct sk_buff
*skb
;
2409 struct ieee80211_mgmt
*mgmt
;
2411 struct ieee80211_sub_if_data
*sdata
;
2412 struct ieee80211_supported_band
*sband
;
2413 union iwreq_data wrqu
;
2415 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2417 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2419 /* Remove possible STA entries from other IBSS networks. */
2420 sta_info_flush_delayed(sdata
);
2422 if (local
->ops
->reset_tsf
) {
2423 /* Reset own TSF to allow time synchronization work. */
2424 local
->ops
->reset_tsf(local_to_hw(local
));
2426 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2427 res
= ieee80211_if_config(sdata
, IEEE80211_IFCC_BSSID
);
2431 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2433 sdata
->drop_unencrypted
= bss
->capability
&
2434 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2436 res
= ieee80211_set_freq(dev
, bss
->freq
);
2441 /* Build IBSS probe response */
2442 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2444 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2446 mgmt
= (struct ieee80211_mgmt
*)
2447 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2448 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2449 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2450 IEEE80211_STYPE_PROBE_RESP
);
2451 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2452 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2453 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2454 mgmt
->u
.beacon
.beacon_int
=
2455 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2456 mgmt
->u
.beacon
.timestamp
= cpu_to_le64(bss
->timestamp
);
2457 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2459 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2460 *pos
++ = WLAN_EID_SSID
;
2461 *pos
++ = ifsta
->ssid_len
;
2462 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2464 rates
= bss
->supp_rates_len
;
2467 pos
= skb_put(skb
, 2 + rates
);
2468 *pos
++ = WLAN_EID_SUPP_RATES
;
2470 memcpy(pos
, bss
->supp_rates
, rates
);
2472 if (bss
->band
== IEEE80211_BAND_2GHZ
) {
2473 pos
= skb_put(skb
, 2 + 1);
2474 *pos
++ = WLAN_EID_DS_PARAMS
;
2476 *pos
++ = ieee80211_frequency_to_channel(bss
->freq
);
2479 pos
= skb_put(skb
, 2 + 2);
2480 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2482 /* FIX: set ATIM window based on scan results */
2486 if (bss
->supp_rates_len
> 8) {
2487 rates
= bss
->supp_rates_len
- 8;
2488 pos
= skb_put(skb
, 2 + rates
);
2489 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2491 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2494 ifsta
->probe_resp
= skb
;
2496 ieee80211_if_config(sdata
, IEEE80211_IFCC_BEACON
);
2500 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2501 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2502 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2503 for (j
= 0; j
< sband
->n_bitrates
; j
++)
2504 if (sband
->bitrates
[j
].bitrate
== bitrate
)
2507 ifsta
->supp_rates_bits
[local
->hw
.conf
.channel
->band
] = rates
;
2509 ieee80211_sta_def_wmm_params(dev
, bss
, 1);
2511 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2512 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2514 memset(&wrqu
, 0, sizeof(wrqu
));
2515 memcpy(wrqu
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
2516 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
2521 u64
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
2522 struct ieee802_11_elems
*elems
,
2523 enum ieee80211_band band
)
2525 struct ieee80211_supported_band
*sband
;
2526 struct ieee80211_rate
*bitrates
;
2530 sband
= local
->hw
.wiphy
->bands
[band
];
2534 sband
= local
->hw
.wiphy
->bands
[local
->hw
.conf
.channel
->band
];
2537 bitrates
= sband
->bitrates
;
2538 num_rates
= sband
->n_bitrates
;
2540 for (i
= 0; i
< elems
->supp_rates_len
+
2541 elems
->ext_supp_rates_len
; i
++) {
2544 if (i
< elems
->supp_rates_len
)
2545 rate
= elems
->supp_rates
[i
];
2546 else if (elems
->ext_supp_rates
)
2547 rate
= elems
->ext_supp_rates
2548 [i
- elems
->supp_rates_len
];
2549 own_rate
= 5 * (rate
& 0x7f);
2550 for (j
= 0; j
< num_rates
; j
++)
2551 if (bitrates
[j
].bitrate
== own_rate
)
2552 supp_rates
|= BIT(j
);
2558 static void ieee80211_rx_bss_info(struct net_device
*dev
,
2559 struct ieee80211_mgmt
*mgmt
,
2561 struct ieee80211_rx_status
*rx_status
,
2562 struct ieee802_11_elems
*elems
,
2565 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2567 struct ieee80211_sta_bss
*bss
;
2568 struct sta_info
*sta
;
2569 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2570 u64 beacon_timestamp
, rx_timestamp
;
2571 struct ieee80211_channel
*channel
;
2572 DECLARE_MAC_BUF(mac
);
2573 DECLARE_MAC_BUF(mac2
);
2575 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
2576 return; /* ignore ProbeResp to foreign address */
2578 beacon_timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
2580 if (ieee80211_vif_is_mesh(&sdata
->vif
) && elems
->mesh_id
&&
2581 elems
->mesh_config
&& mesh_matches_local(elems
, dev
)) {
2582 u64 rates
= ieee80211_sta_get_rates(local
, elems
,
2585 mesh_neighbour_update(mgmt
->sa
, rates
, dev
,
2586 mesh_peer_accepts_plinks(elems
, dev
));
2591 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& elems
->supp_rates
&&
2592 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
2593 (sta
= sta_info_get(local
, mgmt
->sa
))) {
2595 u64 supp_rates
= ieee80211_sta_get_rates(local
, elems
,
2598 prev_rates
= sta
->supp_rates
[rx_status
->band
];
2599 sta
->supp_rates
[rx_status
->band
] &= supp_rates
;
2600 if (sta
->supp_rates
[rx_status
->band
] == 0) {
2601 /* No matching rates - this should not really happen.
2602 * Make sure that at least one rate is marked
2603 * supported to avoid issues with TX rate ctrl. */
2604 sta
->supp_rates
[rx_status
->band
] =
2605 sdata
->u
.sta
.supp_rates_bits
[rx_status
->band
];
2611 if (elems
->ds_params
&& elems
->ds_params_len
== 1)
2612 freq
= ieee80211_channel_to_frequency(elems
->ds_params
[0]);
2614 freq
= rx_status
->freq
;
2616 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
2618 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
2621 #ifdef CONFIG_MAC80211_MESH
2622 if (elems
->mesh_config
)
2623 bss
= ieee80211_rx_mesh_bss_get(dev
, elems
->mesh_id
,
2624 elems
->mesh_id_len
, elems
->mesh_config
, freq
);
2627 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, freq
,
2628 elems
->ssid
, elems
->ssid_len
);
2630 #ifdef CONFIG_MAC80211_MESH
2631 if (elems
->mesh_config
)
2632 bss
= ieee80211_rx_mesh_bss_add(dev
, elems
->mesh_id
,
2633 elems
->mesh_id_len
, elems
->mesh_config
,
2634 elems
->mesh_config_len
, freq
);
2637 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, freq
,
2638 elems
->ssid
, elems
->ssid_len
);
2643 /* TODO: order by RSSI? */
2644 spin_lock_bh(&local
->sta_bss_lock
);
2645 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
2646 spin_unlock_bh(&local
->sta_bss_lock
);
2650 /* save the ERP value so that it is available at association time */
2651 if (elems
->erp_info
&& elems
->erp_info_len
>= 1) {
2652 bss
->erp_value
= elems
->erp_info
[0];
2653 bss
->has_erp_value
= 1;
2656 if (elems
->ht_cap_elem
&&
2657 (!bss
->ht_ie
|| bss
->ht_ie_len
!= elems
->ht_cap_elem_len
||
2658 memcmp(bss
->ht_ie
, elems
->ht_cap_elem
, elems
->ht_cap_elem_len
))) {
2660 bss
->ht_ie
= kmalloc(elems
->ht_cap_elem_len
+ 2, GFP_ATOMIC
);
2662 memcpy(bss
->ht_ie
, elems
->ht_cap_elem
- 2,
2663 elems
->ht_cap_elem_len
+ 2);
2664 bss
->ht_ie_len
= elems
->ht_cap_elem_len
+ 2;
2667 } else if (!elems
->ht_cap_elem
&& bss
->ht_ie
) {
2673 if (elems
->ht_info_elem
&&
2675 bss
->ht_add_ie_len
!= elems
->ht_info_elem_len
||
2676 memcmp(bss
->ht_add_ie
, elems
->ht_info_elem
,
2677 elems
->ht_info_elem_len
))) {
2678 kfree(bss
->ht_add_ie
);
2680 kmalloc(elems
->ht_info_elem_len
+ 2, GFP_ATOMIC
);
2681 if (bss
->ht_add_ie
) {
2682 memcpy(bss
->ht_add_ie
, elems
->ht_info_elem
- 2,
2683 elems
->ht_info_elem_len
+ 2);
2684 bss
->ht_add_ie_len
= elems
->ht_info_elem_len
+ 2;
2686 bss
->ht_add_ie_len
= 0;
2687 } else if (!elems
->ht_info_elem
&& bss
->ht_add_ie
) {
2688 kfree(bss
->ht_add_ie
);
2689 bss
->ht_add_ie
= NULL
;
2690 bss
->ht_add_ie_len
= 0;
2693 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
2694 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2697 struct ieee80211_tim_ie
*tim_ie
=
2698 (struct ieee80211_tim_ie
*)elems
->tim
;
2699 bss
->dtim_period
= tim_ie
->dtim_period
;
2702 /* set default value for buggy APs */
2703 if (!elems
->tim
|| bss
->dtim_period
== 0)
2704 bss
->dtim_period
= 1;
2706 bss
->supp_rates_len
= 0;
2707 if (elems
->supp_rates
) {
2708 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2709 if (clen
> elems
->supp_rates_len
)
2710 clen
= elems
->supp_rates_len
;
2711 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
->supp_rates
,
2713 bss
->supp_rates_len
+= clen
;
2715 if (elems
->ext_supp_rates
) {
2716 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
2717 if (clen
> elems
->ext_supp_rates_len
)
2718 clen
= elems
->ext_supp_rates_len
;
2719 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
2720 elems
->ext_supp_rates
, clen
);
2721 bss
->supp_rates_len
+= clen
;
2724 bss
->band
= rx_status
->band
;
2726 bss
->timestamp
= beacon_timestamp
;
2727 bss
->last_update
= jiffies
;
2728 bss
->signal
= rx_status
->signal
;
2729 bss
->noise
= rx_status
->noise
;
2730 bss
->qual
= rx_status
->qual
;
2731 if (!beacon
&& !bss
->probe_resp
)
2732 bss
->probe_resp
= true;
2735 * In STA mode, the remaining parameters should not be overridden
2736 * by beacons because they're not necessarily accurate there.
2738 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
2739 bss
->probe_resp
&& beacon
) {
2740 ieee80211_rx_bss_put(local
, bss
);
2745 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
->wpa_len
||
2746 memcmp(bss
->wpa_ie
, elems
->wpa
, elems
->wpa_len
))) {
2748 bss
->wpa_ie
= kmalloc(elems
->wpa_len
+ 2, GFP_ATOMIC
);
2750 memcpy(bss
->wpa_ie
, elems
->wpa
- 2, elems
->wpa_len
+ 2);
2751 bss
->wpa_ie_len
= elems
->wpa_len
+ 2;
2753 bss
->wpa_ie_len
= 0;
2754 } else if (!elems
->wpa
&& bss
->wpa_ie
) {
2757 bss
->wpa_ie_len
= 0;
2761 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
->rsn_len
||
2762 memcmp(bss
->rsn_ie
, elems
->rsn
, elems
->rsn_len
))) {
2764 bss
->rsn_ie
= kmalloc(elems
->rsn_len
+ 2, GFP_ATOMIC
);
2766 memcpy(bss
->rsn_ie
, elems
->rsn
- 2, elems
->rsn_len
+ 2);
2767 bss
->rsn_ie_len
= elems
->rsn_len
+ 2;
2769 bss
->rsn_ie_len
= 0;
2770 } else if (!elems
->rsn
&& bss
->rsn_ie
) {
2773 bss
->rsn_ie_len
= 0;
2778 * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC
2782 * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia
2783 * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi
2784 * Alliance (September 1, 2004) is incorporated by reference herein.
2785 * The inclusion of the WMM Parameters in probe responses and
2786 * association responses is mandatory for WMM enabled networks. The
2787 * inclusion of the WMM Parameters in beacons, however, is optional.
2790 if (elems
->wmm_param
&&
2791 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
->wmm_param_len
||
2792 memcmp(bss
->wmm_ie
, elems
->wmm_param
, elems
->wmm_param_len
))) {
2794 bss
->wmm_ie
= kmalloc(elems
->wmm_param_len
+ 2, GFP_ATOMIC
);
2796 memcpy(bss
->wmm_ie
, elems
->wmm_param
- 2,
2797 elems
->wmm_param_len
+ 2);
2798 bss
->wmm_ie_len
= elems
->wmm_param_len
+ 2;
2800 bss
->wmm_ie_len
= 0;
2801 } else if (elems
->wmm_info
&&
2802 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
->wmm_info_len
||
2803 memcmp(bss
->wmm_ie
, elems
->wmm_info
,
2804 elems
->wmm_info_len
))) {
2805 /* As for certain AP's Fifth bit is not set in WMM IE in
2806 * beacon frames.So while parsing the beacon frame the
2807 * wmm_info structure is used instead of wmm_param.
2808 * wmm_info structure was never used to set bss->wmm_ie.
2809 * This code fixes this problem by copying the WME
2810 * information from wmm_info to bss->wmm_ie and enabling
2811 * n-band association.
2814 bss
->wmm_ie
= kmalloc(elems
->wmm_info_len
+ 2, GFP_ATOMIC
);
2816 memcpy(bss
->wmm_ie
, elems
->wmm_info
- 2,
2817 elems
->wmm_info_len
+ 2);
2818 bss
->wmm_ie_len
= elems
->wmm_info_len
+ 2;
2820 bss
->wmm_ie_len
= 0;
2821 } else if (!elems
->wmm_param
&& !elems
->wmm_info
&& bss
->wmm_ie
) {
2824 bss
->wmm_ie_len
= 0;
2827 /* check if we need to merge IBSS */
2828 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
2829 !local
->sta_sw_scanning
&& !local
->sta_hw_scanning
&&
2830 bss
->capability
& WLAN_CAPABILITY_IBSS
&&
2831 bss
->freq
== local
->oper_channel
->center_freq
&&
2832 elems
->ssid_len
== sdata
->u
.sta
.ssid_len
&&
2833 memcmp(elems
->ssid
, sdata
->u
.sta
.ssid
,
2834 sdata
->u
.sta
.ssid_len
) == 0) {
2835 if (rx_status
->flag
& RX_FLAG_TSFT
) {
2836 /* in order for correct IBSS merging we need mactime
2838 * since mactime is defined as the time the first data
2839 * symbol of the frame hits the PHY, and the timestamp
2840 * of the beacon is defined as "the time that the data
2841 * symbol containing the first bit of the timestamp is
2842 * transmitted to the PHY plus the transmitting STA’s
2843 * delays through its local PHY from the MAC-PHY
2844 * interface to its interface with the WM"
2845 * (802.11 11.1.2) - equals the time this bit arrives at
2846 * the receiver - we have to take into account the
2847 * offset between the two.
2848 * e.g: at 1 MBit that means mactime is 192 usec earlier
2849 * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
2851 int rate
= local
->hw
.wiphy
->bands
[rx_status
->band
]->
2852 bitrates
[rx_status
->rate_idx
].bitrate
;
2853 rx_timestamp
= rx_status
->mactime
+ (24 * 8 * 10 / rate
);
2854 } else if (local
&& local
->ops
&& local
->ops
->get_tsf
)
2855 /* second best option: get current TSF */
2856 rx_timestamp
= local
->ops
->get_tsf(local_to_hw(local
));
2858 /* can't merge without knowing the TSF */
2859 rx_timestamp
= -1LLU;
2860 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2861 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
2862 "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
2863 print_mac(mac
, mgmt
->sa
),
2864 print_mac(mac2
, mgmt
->bssid
),
2865 (unsigned long long)rx_timestamp
,
2866 (unsigned long long)beacon_timestamp
,
2867 (unsigned long long)(rx_timestamp
- beacon_timestamp
),
2869 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2870 if (beacon_timestamp
> rx_timestamp
) {
2871 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2872 printk(KERN_DEBUG
"%s: beacon TSF higher than "
2873 "local TSF - IBSS merge with BSSID %s\n",
2874 dev
->name
, print_mac(mac
, mgmt
->bssid
));
2876 ieee80211_sta_join_ibss(dev
, &sdata
->u
.sta
, bss
);
2877 ieee80211_ibss_add_sta(dev
, NULL
,
2878 mgmt
->bssid
, mgmt
->sa
,
2879 BIT(rx_status
->rate_idx
));
2883 ieee80211_rx_bss_put(local
, bss
);
2887 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
2888 struct ieee80211_mgmt
*mgmt
,
2890 struct ieee80211_rx_status
*rx_status
)
2893 struct ieee802_11_elems elems
;
2895 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
2899 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
2902 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, &elems
, 0);
2906 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
2907 struct ieee80211_mgmt
*mgmt
,
2909 struct ieee80211_rx_status
*rx_status
)
2911 struct ieee80211_sub_if_data
*sdata
;
2912 struct ieee80211_if_sta
*ifsta
;
2914 struct ieee802_11_elems elems
;
2915 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2916 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
2919 /* Process beacon from the current BSS */
2920 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2924 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
2926 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, &elems
, 1);
2928 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2929 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
2931 ifsta
= &sdata
->u
.sta
;
2933 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
2934 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
2937 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
2938 elems
.wmm_param_len
);
2940 /* Do not send changes to driver if we are scanning. This removes
2941 * requirement that driver's bss_info_changed function needs to be
2943 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
2946 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
2947 changed
|= ieee80211_handle_erp_ie(sdata
, elems
.erp_info
[0]);
2949 u16 capab
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
2950 changed
|= ieee80211_handle_protect_preamb(sdata
, false,
2951 (capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
) != 0);
2954 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&&
2955 elems
.wmm_param
&& conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
2956 struct ieee80211_ht_bss_info bss_info
;
2958 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2959 (struct ieee80211_ht_addt_info
*)
2960 elems
.ht_info_elem
, &bss_info
);
2961 changed
|= ieee80211_handle_ht(local
, 1, &conf
->ht_conf
,
2965 ieee80211_bss_info_change_notify(sdata
, changed
);
2969 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
2970 struct ieee80211_if_sta
*ifsta
,
2971 struct ieee80211_mgmt
*mgmt
,
2973 struct ieee80211_rx_status
*rx_status
)
2975 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2976 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2978 struct sk_buff
*skb
;
2979 struct ieee80211_mgmt
*resp
;
2981 DECLARE_MAC_BUF(mac
);
2982 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2983 DECLARE_MAC_BUF(mac2
);
2984 DECLARE_MAC_BUF(mac3
);
2987 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
||
2988 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
2989 len
< 24 + 2 || !ifsta
->probe_resp
)
2992 if (local
->ops
->tx_last_beacon
)
2993 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
2997 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2998 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
2999 "%s (tx_last_beacon=%d)\n",
3000 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
3001 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
3002 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3004 if (!tx_last_beacon
)
3007 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
3008 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
3011 end
= ((u8
*) mgmt
) + len
;
3012 pos
= mgmt
->u
.probe_req
.variable
;
3013 if (pos
[0] != WLAN_EID_SSID
||
3014 pos
+ 2 + pos
[1] > end
) {
3015 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3016 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
3018 dev
->name
, print_mac(mac
, mgmt
->sa
));
3023 (pos
[1] != ifsta
->ssid_len
||
3024 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
3025 /* Ignore ProbeReq for foreign SSID */
3029 /* Reply with ProbeResp */
3030 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
3034 resp
= (struct ieee80211_mgmt
*) skb
->data
;
3035 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
3036 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3037 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
3038 dev
->name
, print_mac(mac
, resp
->da
));
3039 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3040 ieee80211_sta_tx(dev
, skb
, 0);
3043 static void ieee80211_rx_mgmt_action(struct net_device
*dev
,
3044 struct ieee80211_if_sta
*ifsta
,
3045 struct ieee80211_mgmt
*mgmt
,
3047 struct ieee80211_rx_status
*rx_status
)
3049 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3050 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3052 if (len
< IEEE80211_MIN_ACTION_SIZE
)
3055 switch (mgmt
->u
.action
.category
) {
3056 case WLAN_CATEGORY_SPECTRUM_MGMT
:
3057 if (local
->hw
.conf
.channel
->band
!= IEEE80211_BAND_5GHZ
)
3059 switch (mgmt
->u
.action
.u
.chan_switch
.action_code
) {
3060 case WLAN_ACTION_SPCT_MSR_REQ
:
3061 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3062 sizeof(mgmt
->u
.action
.u
.measurement
)))
3064 ieee80211_sta_process_measurement_req(dev
, mgmt
, len
);
3068 case WLAN_CATEGORY_BACK
:
3069 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
3070 case WLAN_ACTION_ADDBA_REQ
:
3071 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3072 sizeof(mgmt
->u
.action
.u
.addba_req
)))
3074 ieee80211_sta_process_addba_request(dev
, mgmt
, len
);
3076 case WLAN_ACTION_ADDBA_RESP
:
3077 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3078 sizeof(mgmt
->u
.action
.u
.addba_resp
)))
3080 ieee80211_sta_process_addba_resp(dev
, mgmt
, len
);
3082 case WLAN_ACTION_DELBA
:
3083 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
3084 sizeof(mgmt
->u
.action
.u
.delba
)))
3086 ieee80211_sta_process_delba(dev
, mgmt
, len
);
3090 case PLINK_CATEGORY
:
3091 if (ieee80211_vif_is_mesh(&sdata
->vif
))
3092 mesh_rx_plink_frame(dev
, mgmt
, len
, rx_status
);
3094 case MESH_PATH_SEL_CATEGORY
:
3095 if (ieee80211_vif_is_mesh(&sdata
->vif
))
3096 mesh_rx_path_sel_frame(dev
, mgmt
, len
);
3101 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
3102 struct ieee80211_rx_status
*rx_status
)
3104 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3105 struct ieee80211_sub_if_data
*sdata
;
3106 struct ieee80211_if_sta
*ifsta
;
3107 struct ieee80211_mgmt
*mgmt
;
3113 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3114 ifsta
= &sdata
->u
.sta
;
3116 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3117 fc
= le16_to_cpu(mgmt
->frame_control
);
3119 switch (fc
& IEEE80211_FCTL_STYPE
) {
3120 case IEEE80211_STYPE_PROBE_REQ
:
3121 case IEEE80211_STYPE_PROBE_RESP
:
3122 case IEEE80211_STYPE_BEACON
:
3123 case IEEE80211_STYPE_ACTION
:
3124 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
3125 case IEEE80211_STYPE_AUTH
:
3126 case IEEE80211_STYPE_ASSOC_RESP
:
3127 case IEEE80211_STYPE_REASSOC_RESP
:
3128 case IEEE80211_STYPE_DEAUTH
:
3129 case IEEE80211_STYPE_DISASSOC
:
3130 skb_queue_tail(&ifsta
->skb_queue
, skb
);
3131 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3140 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
3141 struct sk_buff
*skb
)
3143 struct ieee80211_rx_status
*rx_status
;
3144 struct ieee80211_sub_if_data
*sdata
;
3145 struct ieee80211_if_sta
*ifsta
;
3146 struct ieee80211_mgmt
*mgmt
;
3149 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3150 ifsta
= &sdata
->u
.sta
;
3152 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
3153 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3154 fc
= le16_to_cpu(mgmt
->frame_control
);
3156 switch (fc
& IEEE80211_FCTL_STYPE
) {
3157 case IEEE80211_STYPE_PROBE_REQ
:
3158 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
3161 case IEEE80211_STYPE_PROBE_RESP
:
3162 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
3164 case IEEE80211_STYPE_BEACON
:
3165 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
3167 case IEEE80211_STYPE_AUTH
:
3168 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
3170 case IEEE80211_STYPE_ASSOC_RESP
:
3171 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 0);
3173 case IEEE80211_STYPE_REASSOC_RESP
:
3174 ieee80211_rx_mgmt_assoc_resp(sdata
, ifsta
, mgmt
, skb
->len
, 1);
3176 case IEEE80211_STYPE_DEAUTH
:
3177 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
3179 case IEEE80211_STYPE_DISASSOC
:
3180 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
3182 case IEEE80211_STYPE_ACTION
:
3183 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
, rx_status
);
3192 ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
3193 struct ieee80211_rx_status
*rx_status
)
3195 struct ieee80211_mgmt
*mgmt
;
3199 return RX_DROP_UNUSABLE
;
3201 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3202 fc
= mgmt
->frame_control
;
3204 if (ieee80211_is_ctl(fc
))
3208 return RX_DROP_MONITOR
;
3210 if (ieee80211_is_probe_resp(fc
)) {
3211 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
3216 if (ieee80211_is_beacon(fc
)) {
3217 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
3226 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
3228 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3230 struct sta_info
*sta
;
3231 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3235 list_for_each_entry_rcu(sta
, &local
->sta_list
, list
) {
3236 if (sta
->sdata
== sdata
&&
3237 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
3250 static void ieee80211_sta_expire(struct net_device
*dev
, unsigned long exp_time
)
3252 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3253 struct sta_info
*sta
, *tmp
;
3254 LIST_HEAD(tmp_list
);
3255 DECLARE_MAC_BUF(mac
);
3256 unsigned long flags
;
3258 spin_lock_irqsave(&local
->sta_lock
, flags
);
3259 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
3260 if (time_after(jiffies
, sta
->last_rx
+ exp_time
)) {
3261 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3262 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
3263 dev
->name
, print_mac(mac
, sta
->addr
));
3265 __sta_info_unlink(&sta
);
3267 list_add(&sta
->list
, &tmp_list
);
3269 spin_unlock_irqrestore(&local
->sta_lock
, flags
);
3271 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
)
3272 sta_info_destroy(sta
);
3276 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
3277 struct ieee80211_if_sta
*ifsta
)
3279 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
3281 ieee80211_sta_expire(dev
, IEEE80211_IBSS_INACTIVITY_LIMIT
);
3282 if (ieee80211_sta_active_ibss(dev
))
3285 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
3286 "IBSS networks with same SSID (merge)\n", dev
->name
);
3287 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
3291 #ifdef CONFIG_MAC80211_MESH
3292 static void ieee80211_mesh_housekeeping(struct net_device
*dev
,
3293 struct ieee80211_if_sta
*ifsta
)
3295 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3298 ieee80211_sta_expire(dev
, IEEE80211_MESH_PEER_INACTIVITY_LIMIT
);
3299 mesh_path_expire(dev
);
3301 free_plinks
= mesh_plink_availables(sdata
);
3302 if (free_plinks
!= sdata
->u
.sta
.accepting_plinks
)
3303 ieee80211_if_config(sdata
, IEEE80211_IFCC_BEACON
);
3305 mod_timer(&ifsta
->timer
, jiffies
+
3306 IEEE80211_MESH_HOUSEKEEPING_INTERVAL
);
3310 void ieee80211_start_mesh(struct net_device
*dev
)
3312 struct ieee80211_if_sta
*ifsta
;
3313 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3314 ifsta
= &sdata
->u
.sta
;
3315 ifsta
->state
= IEEE80211_MESH_UP
;
3316 ieee80211_sta_timer((unsigned long)sdata
);
3317 ieee80211_if_config(sdata
, IEEE80211_IFCC_BEACON
);
3322 void ieee80211_sta_timer(unsigned long data
)
3324 struct ieee80211_sub_if_data
*sdata
=
3325 (struct ieee80211_sub_if_data
*) data
;
3326 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3327 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
3329 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3330 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3333 void ieee80211_sta_work(struct work_struct
*work
)
3335 struct ieee80211_sub_if_data
*sdata
=
3336 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
3337 struct net_device
*dev
= sdata
->dev
;
3338 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3339 struct ieee80211_if_sta
*ifsta
;
3340 struct sk_buff
*skb
;
3342 if (!netif_running(dev
))
3345 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
3348 if (WARN_ON(sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
3349 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
&&
3350 sdata
->vif
.type
!= IEEE80211_IF_TYPE_MESH_POINT
))
3352 ifsta
= &sdata
->u
.sta
;
3354 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
3355 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
3357 #ifdef CONFIG_MAC80211_MESH
3358 if (ifsta
->preq_queue_len
&&
3360 ifsta
->last_preq
+ msecs_to_jiffies(ifsta
->mshcfg
.dot11MeshHWMPpreqMinInterval
)))
3361 mesh_path_start_discovery(dev
);
3364 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
3365 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
3366 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
3367 if (ifsta
->scan_ssid_len
)
3368 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
3370 ieee80211_sta_start_scan(dev
, NULL
, 0);
3374 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
3375 if (ieee80211_sta_config_auth(dev
, ifsta
))
3377 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
3378 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
3381 switch (ifsta
->state
) {
3382 case IEEE80211_DISABLED
:
3384 case IEEE80211_AUTHENTICATE
:
3385 ieee80211_authenticate(dev
, ifsta
);
3387 case IEEE80211_ASSOCIATE
:
3388 ieee80211_associate(dev
, ifsta
);
3390 case IEEE80211_ASSOCIATED
:
3391 ieee80211_associated(dev
, ifsta
);
3393 case IEEE80211_IBSS_SEARCH
:
3394 ieee80211_sta_find_ibss(dev
, ifsta
);
3396 case IEEE80211_IBSS_JOINED
:
3397 ieee80211_sta_merge_ibss(dev
, ifsta
);
3399 #ifdef CONFIG_MAC80211_MESH
3400 case IEEE80211_MESH_UP
:
3401 ieee80211_mesh_housekeeping(dev
, ifsta
);
3409 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
3410 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
3411 "mixed-cell disabled - disassociate\n", dev
->name
);
3413 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
3414 ieee80211_set_disassoc(dev
, ifsta
, 0);
3419 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
3420 struct ieee80211_if_sta
*ifsta
)
3422 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3424 if (local
->ops
->reset_tsf
) {
3425 /* Reset own TSF to allow time synchronization work. */
3426 local
->ops
->reset_tsf(local_to_hw(local
));
3429 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
3432 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
3433 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3434 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
3435 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
3436 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
3437 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
3439 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
3440 ifsta
->auth_transaction
= -1;
3441 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
3442 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
3443 netif_carrier_off(dev
);
3447 void ieee80211_sta_req_auth(struct net_device
*dev
,
3448 struct ieee80211_if_sta
*ifsta
)
3450 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3451 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3453 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
3456 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
3457 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
3458 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
3459 IEEE80211_STA_AUTO_SSID_SEL
))) {
3460 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3461 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3465 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
3466 const char *ssid
, int ssid_len
)
3468 int tmp
, hidden_ssid
;
3470 if (ssid_len
== ifsta
->ssid_len
&&
3471 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
3474 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
3480 if (ssid
[tmp
] != '\0') {
3486 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
3489 if (ssid_len
== 1 && ssid
[0] == ' ')
3495 static int ieee80211_sta_config_auth(struct net_device
*dev
,
3496 struct ieee80211_if_sta
*ifsta
)
3498 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3499 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3500 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
3501 int top_rssi
= 0, freq
;
3503 spin_lock_bh(&local
->sta_bss_lock
);
3504 freq
= local
->oper_channel
->center_freq
;
3505 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3506 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
3509 if ((ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
3510 IEEE80211_STA_AUTO_BSSID_SEL
|
3511 IEEE80211_STA_AUTO_CHANNEL_SEL
)) &&
3512 (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
3513 !!sdata
->default_key
))
3516 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
3520 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
3521 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
3524 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
3525 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
3528 if (!selected
|| top_rssi
< bss
->signal
) {
3530 top_rssi
= bss
->signal
;
3534 atomic_inc(&selected
->users
);
3535 spin_unlock_bh(&local
->sta_bss_lock
);
3538 ieee80211_set_freq(dev
, selected
->freq
);
3539 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
3540 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
3541 selected
->ssid_len
);
3542 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
3543 ieee80211_sta_def_wmm_params(dev
, selected
, 0);
3544 ieee80211_rx_bss_put(local
, selected
);
3545 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3546 ieee80211_sta_reset_auth(dev
, ifsta
);
3549 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
3550 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
3551 ieee80211_sta_start_scan(dev
, NULL
, 0);
3553 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
3555 ifsta
->state
= IEEE80211_AUTHENTICATE
;
3556 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
3558 ifsta
->state
= IEEE80211_DISABLED
;
3564 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
3565 struct ieee80211_if_sta
*ifsta
)
3567 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3568 struct ieee80211_sta_bss
*bss
;
3569 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3570 struct ieee80211_supported_band
*sband
;
3571 u8 bssid
[ETH_ALEN
], *pos
;
3574 DECLARE_MAC_BUF(mac
);
3577 /* Easier testing, use fixed BSSID. */
3578 memset(bssid
, 0xfe, ETH_ALEN
);
3580 /* Generate random, not broadcast, locally administered BSSID. Mix in
3581 * own MAC address to make sure that devices that do not have proper
3582 * random number generator get different BSSID. */
3583 get_random_bytes(bssid
, ETH_ALEN
);
3584 for (i
= 0; i
< ETH_ALEN
; i
++)
3585 bssid
[i
] ^= dev
->dev_addr
[i
];
3590 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
3591 dev
->name
, print_mac(mac
, bssid
));
3593 bss
= ieee80211_rx_bss_add(dev
, bssid
,
3594 local
->hw
.conf
.channel
->center_freq
,
3595 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
3599 bss
->band
= local
->hw
.conf
.channel
->band
;
3600 sband
= local
->hw
.wiphy
->bands
[bss
->band
];
3602 if (local
->hw
.conf
.beacon_int
== 0)
3603 local
->hw
.conf
.beacon_int
= 100;
3604 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
3605 bss
->last_update
= jiffies
;
3606 bss
->capability
= WLAN_CAPABILITY_IBSS
;
3608 if (sdata
->default_key
)
3609 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
3611 sdata
->drop_unencrypted
= 0;
3613 bss
->supp_rates_len
= sband
->n_bitrates
;
3614 pos
= bss
->supp_rates
;
3615 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
3616 int rate
= sband
->bitrates
[i
].bitrate
;
3617 *pos
++ = (u8
) (rate
/ 5);
3620 ret
= ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3621 ieee80211_rx_bss_put(local
, bss
);
3626 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
3627 struct ieee80211_if_sta
*ifsta
)
3629 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3630 struct ieee80211_sta_bss
*bss
;
3634 DECLARE_MAC_BUF(mac
);
3635 DECLARE_MAC_BUF(mac2
);
3637 if (ifsta
->ssid_len
== 0)
3640 active_ibss
= ieee80211_sta_active_ibss(dev
);
3641 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3642 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
3643 dev
->name
, active_ibss
);
3644 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3645 spin_lock_bh(&local
->sta_bss_lock
);
3646 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3647 if (ifsta
->ssid_len
!= bss
->ssid_len
||
3648 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
3649 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
3651 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3652 printk(KERN_DEBUG
" bssid=%s found\n",
3653 print_mac(mac
, bss
->bssid
));
3654 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3655 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
3657 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
3660 spin_unlock_bh(&local
->sta_bss_lock
);
3662 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3664 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
3665 "%s\n", print_mac(mac
, bssid
),
3666 print_mac(mac2
, ifsta
->bssid
));
3667 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3669 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3673 if (ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
)
3674 search_freq
= bss
->freq
;
3676 search_freq
= local
->hw
.conf
.channel
->center_freq
;
3678 bss
= ieee80211_rx_bss_get(dev
, bssid
, search_freq
,
3679 ifsta
->ssid
, ifsta
->ssid_len
);
3683 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
3684 " based on configured SSID\n",
3685 dev
->name
, print_mac(mac
, bssid
));
3686 ret
= ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
3687 ieee80211_rx_bss_put(local
, bss
);
3692 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3693 printk(KERN_DEBUG
" did not try to join ibss\n");
3694 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3696 /* Selected IBSS not found in current scan results - try to scan */
3697 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
3698 !ieee80211_sta_active_ibss(dev
)) {
3699 mod_timer(&ifsta
->timer
, jiffies
+
3700 IEEE80211_IBSS_MERGE_INTERVAL
);
3701 } else if (time_after(jiffies
, local
->last_scan_completed
+
3702 IEEE80211_SCAN_INTERVAL
)) {
3703 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
3704 "join\n", dev
->name
);
3705 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
3707 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
3708 int interval
= IEEE80211_SCAN_INTERVAL
;
3710 if (time_after(jiffies
, ifsta
->ibss_join_req
+
3711 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
3712 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
3713 (!(local
->oper_channel
->flags
&
3714 IEEE80211_CHAN_NO_IBSS
)))
3715 return ieee80211_sta_create_ibss(dev
, ifsta
);
3716 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
3717 printk(KERN_DEBUG
"%s: IBSS not allowed on"
3718 " %d MHz\n", dev
->name
,
3719 local
->hw
.conf
.channel
->center_freq
);
3722 /* No IBSS found - decrease scan interval and continue
3724 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
3727 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3728 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
3736 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
3738 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3739 struct ieee80211_if_sta
*ifsta
;
3742 if (len
> IEEE80211_MAX_SSID_LEN
)
3745 ifsta
= &sdata
->u
.sta
;
3747 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0) {
3748 memset(ifsta
->ssid
, 0, sizeof(ifsta
->ssid
));
3749 memcpy(ifsta
->ssid
, ssid
, len
);
3750 ifsta
->ssid_len
= len
;
3751 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
3755 * Hack! MLME code needs to be cleaned up to have different
3756 * entry points for configuration and internal selection change
3758 if (netif_running(sdata
->dev
))
3759 res
= ieee80211_if_config(sdata
, IEEE80211_IFCC_SSID
);
3761 printk(KERN_DEBUG
"%s: Failed to config new SSID to "
3762 "the low-level driver\n", dev
->name
);
3768 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
3770 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
3772 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3773 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
3774 ifsta
->ibss_join_req
= jiffies
;
3775 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
3776 return ieee80211_sta_find_ibss(dev
, ifsta
);
3783 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
3785 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3786 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3787 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
3788 *len
= ifsta
->ssid_len
;
3793 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
3795 struct ieee80211_sub_if_data
*sdata
;
3796 struct ieee80211_if_sta
*ifsta
;
3799 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3800 ifsta
= &sdata
->u
.sta
;
3802 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
3803 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
3806 * Hack! See also ieee80211_sta_set_ssid.
3808 if (netif_running(sdata
->dev
))
3809 res
= ieee80211_if_config(sdata
, IEEE80211_IFCC_BSSID
);
3811 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
3812 "the low-level driver\n", dev
->name
);
3817 if (is_valid_ether_addr(bssid
))
3818 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
3820 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
3826 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
3827 struct ieee80211_sub_if_data
*sdata
,
3830 struct sk_buff
*skb
;
3831 struct ieee80211_hdr
*nullfunc
;
3834 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
3836 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
3837 "frame\n", sdata
->dev
->name
);
3840 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
3842 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
3843 memset(nullfunc
, 0, 24);
3844 fc
= cpu_to_le16(IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
3845 IEEE80211_FCTL_TODS
);
3847 fc
|= cpu_to_le16(IEEE80211_FCTL_PM
);
3848 nullfunc
->frame_control
= fc
;
3849 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3850 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
3851 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
3853 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
3857 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data
*sdata
)
3859 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
||
3860 ieee80211_vif_is_mesh(&sdata
->vif
))
3861 ieee80211_sta_timer((unsigned long)sdata
);
3864 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
3866 struct ieee80211_local
*local
= hw_to_local(hw
);
3867 struct net_device
*dev
= local
->scan_dev
;
3868 struct ieee80211_sub_if_data
*sdata
;
3869 union iwreq_data wrqu
;
3871 local
->last_scan_completed
= jiffies
;
3872 memset(&wrqu
, 0, sizeof(wrqu
));
3873 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
3875 if (local
->sta_hw_scanning
) {
3876 local
->sta_hw_scanning
= 0;
3877 if (ieee80211_hw_config(local
))
3878 printk(KERN_DEBUG
"%s: failed to restore operational "
3879 "channel after scan\n", dev
->name
);
3880 /* Restart STA timer for HW scan case */
3882 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
)
3883 ieee80211_restart_sta_timer(sdata
);
3889 local
->sta_sw_scanning
= 0;
3890 if (ieee80211_hw_config(local
))
3891 printk(KERN_DEBUG
"%s: failed to restore operational "
3892 "channel after scan\n", dev
->name
);
3895 netif_tx_lock_bh(local
->mdev
);
3896 netif_addr_lock(local
->mdev
);
3897 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
3898 local
->ops
->configure_filter(local_to_hw(local
),
3899 FIF_BCN_PRBRESP_PROMISC
,
3900 &local
->filter_flags
,
3901 local
->mdev
->mc_count
,
3902 local
->mdev
->mc_list
);
3904 netif_addr_unlock(local
->mdev
);
3905 netif_tx_unlock_bh(local
->mdev
);
3908 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3909 /* Tell AP we're back */
3910 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
3911 sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
3912 ieee80211_send_nullfunc(local
, sdata
, 0);
3914 ieee80211_restart_sta_timer(sdata
);
3916 netif_wake_queue(sdata
->dev
);
3921 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3922 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
) {
3923 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3924 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
3925 (!(ifsta
->state
== IEEE80211_IBSS_JOINED
) &&
3926 !ieee80211_sta_active_ibss(dev
)))
3927 ieee80211_sta_find_ibss(dev
, ifsta
);
3930 EXPORT_SYMBOL(ieee80211_scan_completed
);
3932 void ieee80211_sta_scan_work(struct work_struct
*work
)
3934 struct ieee80211_local
*local
=
3935 container_of(work
, struct ieee80211_local
, scan_work
.work
);
3936 struct net_device
*dev
= local
->scan_dev
;
3937 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3938 struct ieee80211_supported_band
*sband
;
3939 struct ieee80211_channel
*chan
;
3941 unsigned long next_delay
= 0;
3943 if (!local
->sta_sw_scanning
)
3946 switch (local
->scan_state
) {
3947 case SCAN_SET_CHANNEL
:
3949 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
3950 * after we successfully scanned the last channel of the last
3951 * band (and the last band is supported by the hw)
3953 if (local
->scan_band
< IEEE80211_NUM_BANDS
)
3954 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3959 * If we are at an unsupported band and have more bands
3960 * left to scan, advance to the next supported one.
3962 while (!sband
&& local
->scan_band
< IEEE80211_NUM_BANDS
- 1) {
3964 sband
= local
->hw
.wiphy
->bands
[local
->scan_band
];
3965 local
->scan_channel_idx
= 0;
3968 /* if no more bands/channels left, complete scan */
3969 if (!sband
|| local
->scan_channel_idx
>= sband
->n_channels
) {
3970 ieee80211_scan_completed(local_to_hw(local
));
3974 chan
= &sband
->channels
[local
->scan_channel_idx
];
3976 if (chan
->flags
& IEEE80211_CHAN_DISABLED
||
3977 (sdata
->vif
.type
== IEEE80211_IF_TYPE_IBSS
&&
3978 chan
->flags
& IEEE80211_CHAN_NO_IBSS
))
3982 local
->scan_channel
= chan
;
3983 if (ieee80211_hw_config(local
)) {
3984 printk(KERN_DEBUG
"%s: failed to set freq to "
3985 "%d MHz for scan\n", dev
->name
,
3991 /* advance state machine to next channel/band */
3992 local
->scan_channel_idx
++;
3993 if (local
->scan_channel_idx
>= sband
->n_channels
) {
3995 * scan_band may end up == IEEE80211_NUM_BANDS, but
3996 * we'll catch that case above and complete the scan
3997 * if that is the case.
4000 local
->scan_channel_idx
= 0;
4006 next_delay
= IEEE80211_PROBE_DELAY
+
4007 usecs_to_jiffies(local
->hw
.channel_change_time
);
4008 local
->scan_state
= SCAN_SEND_PROBE
;
4010 case SCAN_SEND_PROBE
:
4011 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
4012 local
->scan_state
= SCAN_SET_CHANNEL
;
4014 if (local
->scan_channel
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)
4016 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
4017 local
->scan_ssid_len
);
4018 next_delay
= IEEE80211_CHANNEL_TIME
;
4022 if (local
->sta_sw_scanning
)
4023 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
4028 static int ieee80211_sta_start_scan(struct net_device
*dev
,
4029 u8
*ssid
, size_t ssid_len
)
4031 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4032 struct ieee80211_sub_if_data
*sdata
;
4034 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
4037 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
4038 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
4041 * ScanType: ACTIVE, PASSIVE
4042 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
4043 * a Probe frame during active scanning
4045 * MinChannelTime (>= ProbeDelay), in TU
4046 * MaxChannelTime: (>= MinChannelTime), in TU
4049 /* MLME-SCAN.confirm
4051 * ResultCode: SUCCESS, INVALID_PARAMETERS
4054 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
4055 if (local
->scan_dev
== dev
)
4060 if (local
->ops
->hw_scan
) {
4061 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
4064 local
->sta_hw_scanning
= 1;
4065 local
->scan_dev
= dev
;
4070 local
->sta_sw_scanning
= 1;
4073 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
4074 netif_stop_queue(sdata
->dev
);
4075 if (sdata
->vif
.type
== IEEE80211_IF_TYPE_STA
&&
4076 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
4077 ieee80211_send_nullfunc(local
, sdata
, 1);
4082 local
->scan_ssid_len
= ssid_len
;
4083 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
4085 local
->scan_ssid_len
= 0;
4086 local
->scan_state
= SCAN_SET_CHANNEL
;
4087 local
->scan_channel_idx
= 0;
4088 local
->scan_band
= IEEE80211_BAND_2GHZ
;
4089 local
->scan_dev
= dev
;
4091 netif_addr_lock_bh(local
->mdev
);
4092 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
4093 local
->ops
->configure_filter(local_to_hw(local
),
4094 FIF_BCN_PRBRESP_PROMISC
,
4095 &local
->filter_flags
,
4096 local
->mdev
->mc_count
,
4097 local
->mdev
->mc_list
);
4098 netif_addr_unlock_bh(local
->mdev
);
4100 /* TODO: start scan as soon as all nullfunc frames are ACKed */
4101 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
4102 IEEE80211_CHANNEL_TIME
);
4108 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
4110 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4111 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4112 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4114 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4115 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
4117 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
4118 if (local
->scan_dev
== dev
)
4123 ifsta
->scan_ssid_len
= ssid_len
;
4125 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
4126 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
4127 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
4132 ieee80211_sta_scan_result(struct net_device
*dev
,
4133 struct iw_request_info
*info
,
4134 struct ieee80211_sta_bss
*bss
,
4135 char *current_ev
, char *end_buf
)
4137 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4138 struct iw_event iwe
;
4140 if (time_after(jiffies
,
4141 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
4144 memset(&iwe
, 0, sizeof(iwe
));
4145 iwe
.cmd
= SIOCGIWAP
;
4146 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
4147 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
4148 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
, &iwe
,
4151 memset(&iwe
, 0, sizeof(iwe
));
4152 iwe
.cmd
= SIOCGIWESSID
;
4153 if (bss_mesh_cfg(bss
)) {
4154 iwe
.u
.data
.length
= bss_mesh_id_len(bss
);
4155 iwe
.u
.data
.flags
= 1;
4156 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4157 &iwe
, bss_mesh_id(bss
));
4159 iwe
.u
.data
.length
= bss
->ssid_len
;
4160 iwe
.u
.data
.flags
= 1;
4161 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4165 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)
4166 || bss_mesh_cfg(bss
)) {
4167 memset(&iwe
, 0, sizeof(iwe
));
4168 iwe
.cmd
= SIOCGIWMODE
;
4169 if (bss_mesh_cfg(bss
))
4170 iwe
.u
.mode
= IW_MODE_MESH
;
4171 else if (bss
->capability
& WLAN_CAPABILITY_ESS
)
4172 iwe
.u
.mode
= IW_MODE_MASTER
;
4174 iwe
.u
.mode
= IW_MODE_ADHOC
;
4175 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
,
4176 &iwe
, IW_EV_UINT_LEN
);
4179 memset(&iwe
, 0, sizeof(iwe
));
4180 iwe
.cmd
= SIOCGIWFREQ
;
4181 iwe
.u
.freq
.m
= ieee80211_frequency_to_channel(bss
->freq
);
4183 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
, &iwe
,
4186 memset(&iwe
, 0, sizeof(iwe
));
4187 iwe
.cmd
= SIOCGIWFREQ
;
4188 iwe
.u
.freq
.m
= bss
->freq
;
4190 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
, &iwe
,
4192 memset(&iwe
, 0, sizeof(iwe
));
4194 iwe
.u
.qual
.qual
= bss
->qual
;
4195 iwe
.u
.qual
.level
= bss
->signal
;
4196 iwe
.u
.qual
.noise
= bss
->noise
;
4197 iwe
.u
.qual
.updated
= local
->wstats_flags
;
4198 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
, &iwe
,
4201 memset(&iwe
, 0, sizeof(iwe
));
4202 iwe
.cmd
= SIOCGIWENCODE
;
4203 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
4204 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
4206 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
4207 iwe
.u
.data
.length
= 0;
4208 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4211 if (bss
&& bss
->wpa_ie
) {
4212 memset(&iwe
, 0, sizeof(iwe
));
4213 iwe
.cmd
= IWEVGENIE
;
4214 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
4215 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4219 if (bss
&& bss
->rsn_ie
) {
4220 memset(&iwe
, 0, sizeof(iwe
));
4221 iwe
.cmd
= IWEVGENIE
;
4222 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
4223 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4227 if (bss
&& bss
->ht_ie
) {
4228 memset(&iwe
, 0, sizeof(iwe
));
4229 iwe
.cmd
= IWEVGENIE
;
4230 iwe
.u
.data
.length
= bss
->ht_ie_len
;
4231 current_ev
= iwe_stream_add_point(info
, current_ev
, end_buf
,
4235 if (bss
&& bss
->supp_rates_len
> 0) {
4236 /* display all supported rates in readable format */
4237 char *p
= current_ev
+ iwe_stream_lcp_len(info
);
4240 memset(&iwe
, 0, sizeof(iwe
));
4241 iwe
.cmd
= SIOCGIWRATE
;
4242 /* Those two flags are ignored... */
4243 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
4245 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
4246 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
4248 p
= iwe_stream_add_value(info
, current_ev
, p
,
4249 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
4256 buf
= kmalloc(30, GFP_ATOMIC
);
4258 memset(&iwe
, 0, sizeof(iwe
));
4259 iwe
.cmd
= IWEVCUSTOM
;
4260 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
4261 iwe
.u
.data
.length
= strlen(buf
);
4262 current_ev
= iwe_stream_add_point(info
, current_ev
,
4265 memset(&iwe
, 0, sizeof(iwe
));
4266 iwe
.cmd
= IWEVCUSTOM
;
4267 sprintf(buf
, " Last beacon: %dms ago",
4268 jiffies_to_msecs(jiffies
- bss
->last_update
));
4269 iwe
.u
.data
.length
= strlen(buf
);
4270 current_ev
= iwe_stream_add_point(info
, current_ev
,
4271 end_buf
, &iwe
, buf
);
4276 if (bss_mesh_cfg(bss
)) {
4278 u8
*cfg
= bss_mesh_cfg(bss
);
4279 buf
= kmalloc(50, GFP_ATOMIC
);
4281 memset(&iwe
, 0, sizeof(iwe
));
4282 iwe
.cmd
= IWEVCUSTOM
;
4283 sprintf(buf
, "Mesh network (version %d)", cfg
[0]);
4284 iwe
.u
.data
.length
= strlen(buf
);
4285 current_ev
= iwe_stream_add_point(info
, current_ev
,
4288 sprintf(buf
, "Path Selection Protocol ID: "
4289 "0x%02X%02X%02X%02X", cfg
[1], cfg
[2], cfg
[3],
4291 iwe
.u
.data
.length
= strlen(buf
);
4292 current_ev
= iwe_stream_add_point(info
, current_ev
,
4295 sprintf(buf
, "Path Selection Metric ID: "
4296 "0x%02X%02X%02X%02X", cfg
[5], cfg
[6], cfg
[7],
4298 iwe
.u
.data
.length
= strlen(buf
);
4299 current_ev
= iwe_stream_add_point(info
, current_ev
,
4302 sprintf(buf
, "Congestion Control Mode ID: "
4303 "0x%02X%02X%02X%02X", cfg
[9], cfg
[10],
4305 iwe
.u
.data
.length
= strlen(buf
);
4306 current_ev
= iwe_stream_add_point(info
, current_ev
,
4309 sprintf(buf
, "Channel Precedence: "
4310 "0x%02X%02X%02X%02X", cfg
[13], cfg
[14],
4312 iwe
.u
.data
.length
= strlen(buf
);
4313 current_ev
= iwe_stream_add_point(info
, current_ev
,
4324 int ieee80211_sta_scan_results(struct net_device
*dev
,
4325 struct iw_request_info
*info
,
4326 char *buf
, size_t len
)
4328 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4329 char *current_ev
= buf
;
4330 char *end_buf
= buf
+ len
;
4331 struct ieee80211_sta_bss
*bss
;
4333 spin_lock_bh(&local
->sta_bss_lock
);
4334 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
4335 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
4336 spin_unlock_bh(&local
->sta_bss_lock
);
4339 current_ev
= ieee80211_sta_scan_result(dev
, info
, bss
,
4340 current_ev
, end_buf
);
4342 spin_unlock_bh(&local
->sta_bss_lock
);
4343 return current_ev
- buf
;
4347 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
4349 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4350 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4352 kfree(ifsta
->extra_ie
);
4354 ifsta
->extra_ie
= NULL
;
4355 ifsta
->extra_ie_len
= 0;
4358 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
4359 if (!ifsta
->extra_ie
) {
4360 ifsta
->extra_ie_len
= 0;
4363 memcpy(ifsta
->extra_ie
, ie
, len
);
4364 ifsta
->extra_ie_len
= len
;
4369 struct sta_info
*ieee80211_ibss_add_sta(struct net_device
*dev
,
4370 struct sk_buff
*skb
, u8
*bssid
,
4371 u8
*addr
, u64 supp_rates
)
4373 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
4374 struct sta_info
*sta
;
4375 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4376 DECLARE_MAC_BUF(mac
);
4377 int band
= local
->hw
.conf
.channel
->band
;
4379 /* TODO: Could consider removing the least recently used entry and
4380 * allow new one to be added. */
4381 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
4382 if (net_ratelimit()) {
4383 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
4384 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
4389 if (compare_ether_addr(bssid
, sdata
->u
.sta
.bssid
))
4392 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
4393 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
4394 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
4397 sta
= sta_info_alloc(sdata
, addr
, GFP_ATOMIC
);
4401 set_sta_flags(sta
, WLAN_STA_AUTHORIZED
);
4404 sta
->supp_rates
[band
] = supp_rates
;
4406 sta
->supp_rates
[band
] = sdata
->u
.sta
.supp_rates_bits
[band
];
4408 rate_control_rate_init(sta
, local
);
4410 if (sta_info_insert(sta
))
4417 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
4419 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4420 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4422 printk(KERN_DEBUG
"%s: deauthenticating by local choice (reason=%d)\n",
4425 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
&&
4426 sdata
->vif
.type
!= IEEE80211_IF_TYPE_IBSS
)
4429 ieee80211_send_deauth(dev
, ifsta
, reason
);
4430 ieee80211_set_disassoc(dev
, ifsta
, 1);
4435 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
4437 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
4438 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
4440 printk(KERN_DEBUG
"%s: disassociating by local choice (reason=%d)\n",
4443 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4446 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
4449 ieee80211_send_disassoc(dev
, ifsta
, reason
);
4450 ieee80211_set_disassoc(dev
, ifsta
, 0);
4454 void ieee80211_notify_mac(struct ieee80211_hw
*hw
,
4455 enum ieee80211_notification_types notif_type
)
4457 struct ieee80211_local
*local
= hw_to_local(hw
);
4458 struct ieee80211_sub_if_data
*sdata
;
4460 switch (notif_type
) {
4461 case IEEE80211_NOTIFY_RE_ASSOC
:
4463 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
4464 if (sdata
->vif
.type
!= IEEE80211_IF_TYPE_STA
)
4467 ieee80211_sta_req_auth(sdata
->dev
, &sdata
->u
.sta
);
4473 EXPORT_SYMBOL(ieee80211_notify_mac
);