2 * Intersil Prism2 driver with Host AP (software access point) support
3 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
5 * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
7 * This file is to be included into hostap.c when S/W AP functionality is
11 * - if unicast Class 2 (assoc,reassoc,disassoc) frame received from
12 * unauthenticated STA, send deauth. frame (8802.11: 5.5)
13 * - if unicast Class 3 (data with to/from DS,deauth,pspoll) frame received
14 * from authenticated, but unassoc STA, send disassoc frame (8802.11: 5.5)
15 * - if unicast Class 3 received from unauthenticated STA, send deauth. frame
19 #include <linux/proc_fs.h>
20 #include <linux/delay.h>
21 #include <linux/random.h>
23 #include "hostap_wlan.h"
25 #include "hostap_ap.h"
27 static int other_ap_policy
[MAX_PARM_DEVICES
] = { AP_OTHER_AP_SKIP_ALL
,
29 module_param_array(other_ap_policy
, int, NULL
, 0444);
30 MODULE_PARM_DESC(other_ap_policy
, "Other AP beacon monitoring policy (0-3)");
32 static int ap_max_inactivity
[MAX_PARM_DEVICES
] = { AP_MAX_INACTIVITY_SEC
,
34 module_param_array(ap_max_inactivity
, int, NULL
, 0444);
35 MODULE_PARM_DESC(ap_max_inactivity
, "AP timeout (in seconds) for station "
38 static int ap_bridge_packets
[MAX_PARM_DEVICES
] = { 1, DEF_INTS
};
39 module_param_array(ap_bridge_packets
, int, NULL
, 0444);
40 MODULE_PARM_DESC(ap_bridge_packets
, "Bridge packets directly between "
43 static int autom_ap_wds
[MAX_PARM_DEVICES
] = { 0, DEF_INTS
};
44 module_param_array(autom_ap_wds
, int, NULL
, 0444);
45 MODULE_PARM_DESC(autom_ap_wds
, "Add WDS connections to other APs "
49 static struct sta_info
* ap_get_sta(struct ap_data
*ap
, u8
*sta
);
50 static void hostap_event_expired_sta(struct net_device
*dev
,
51 struct sta_info
*sta
);
52 static void handle_add_proc_queue(struct work_struct
*work
);
54 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
55 static void handle_wds_oper_queue(struct work_struct
*work
);
56 static void prism2_send_mgmt(struct net_device
*dev
,
57 u16 type_subtype
, char *body
,
58 int body_len
, u8
*addr
, u16 tx_cb_idx
);
59 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
62 #ifndef PRISM2_NO_PROCFS_DEBUG
63 static int ap_debug_proc_read(char *page
, char **start
, off_t off
,
64 int count
, int *eof
, void *data
)
67 struct ap_data
*ap
= (struct ap_data
*) data
;
74 p
+= sprintf(p
, "BridgedUnicastFrames=%u\n", ap
->bridged_unicast
);
75 p
+= sprintf(p
, "BridgedMulticastFrames=%u\n", ap
->bridged_multicast
);
76 p
+= sprintf(p
, "max_inactivity=%u\n", ap
->max_inactivity
/ HZ
);
77 p
+= sprintf(p
, "bridge_packets=%u\n", ap
->bridge_packets
);
78 p
+= sprintf(p
, "nullfunc_ack=%u\n", ap
->nullfunc_ack
);
79 p
+= sprintf(p
, "autom_ap_wds=%u\n", ap
->autom_ap_wds
);
80 p
+= sprintf(p
, "auth_algs=%u\n", ap
->local
->auth_algs
);
81 p
+= sprintf(p
, "tx_drop_nonassoc=%u\n", ap
->tx_drop_nonassoc
);
85 #endif /* PRISM2_NO_PROCFS_DEBUG */
88 static void ap_sta_hash_add(struct ap_data
*ap
, struct sta_info
*sta
)
90 sta
->hnext
= ap
->sta_hash
[STA_HASH(sta
->addr
)];
91 ap
->sta_hash
[STA_HASH(sta
->addr
)] = sta
;
94 static void ap_sta_hash_del(struct ap_data
*ap
, struct sta_info
*sta
)
98 s
= ap
->sta_hash
[STA_HASH(sta
->addr
)];
99 if (s
== NULL
) return;
100 if (memcmp(s
->addr
, sta
->addr
, ETH_ALEN
) == 0) {
101 ap
->sta_hash
[STA_HASH(sta
->addr
)] = s
->hnext
;
105 while (s
->hnext
!= NULL
&& memcmp(s
->hnext
->addr
, sta
->addr
, ETH_ALEN
)
108 if (s
->hnext
!= NULL
)
109 s
->hnext
= s
->hnext
->hnext
;
111 printk("AP: could not remove STA " MACSTR
" from hash table\n",
115 static void ap_free_sta(struct ap_data
*ap
, struct sta_info
*sta
)
117 if (sta
->ap
&& sta
->local
)
118 hostap_event_expired_sta(sta
->local
->dev
, sta
);
120 if (ap
->proc
!= NULL
) {
122 sprintf(name
, MACSTR
, MAC2STR(sta
->addr
));
123 remove_proc_entry(name
, ap
->proc
);
127 sta
->crypt
->ops
->deinit(sta
->crypt
->priv
);
132 skb_queue_purge(&sta
->tx_buf
);
135 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
137 ap
->sta_aid
[sta
->aid
- 1] = NULL
;
139 if (!sta
->ap
&& sta
->u
.sta
.challenge
)
140 kfree(sta
->u
.sta
.challenge
);
141 del_timer(&sta
->timer
);
142 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
148 static void hostap_set_tim(local_info_t
*local
, int aid
, int set
)
150 if (local
->func
->set_tim
)
151 local
->func
->set_tim(local
->dev
, aid
, set
);
155 static void hostap_event_new_sta(struct net_device
*dev
, struct sta_info
*sta
)
157 union iwreq_data wrqu
;
158 memset(&wrqu
, 0, sizeof(wrqu
));
159 memcpy(wrqu
.addr
.sa_data
, sta
->addr
, ETH_ALEN
);
160 wrqu
.addr
.sa_family
= ARPHRD_ETHER
;
161 wireless_send_event(dev
, IWEVREGISTERED
, &wrqu
, NULL
);
165 static void hostap_event_expired_sta(struct net_device
*dev
,
166 struct sta_info
*sta
)
168 union iwreq_data wrqu
;
169 memset(&wrqu
, 0, sizeof(wrqu
));
170 memcpy(wrqu
.addr
.sa_data
, sta
->addr
, ETH_ALEN
);
171 wrqu
.addr
.sa_family
= ARPHRD_ETHER
;
172 wireless_send_event(dev
, IWEVEXPIRED
, &wrqu
, NULL
);
176 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
178 static void ap_handle_timer(unsigned long data
)
180 struct sta_info
*sta
= (struct sta_info
*) data
;
183 unsigned long next_time
= 0;
186 if (sta
== NULL
|| sta
->local
== NULL
|| sta
->local
->ap
== NULL
) {
187 PDEBUG(DEBUG_AP
, "ap_handle_timer() called with NULL data\n");
193 was_assoc
= sta
->flags
& WLAN_STA_ASSOC
;
195 if (atomic_read(&sta
->users
) != 0)
196 next_time
= jiffies
+ HZ
;
197 else if ((sta
->flags
& WLAN_STA_PERM
) && !(sta
->flags
& WLAN_STA_AUTH
))
198 next_time
= jiffies
+ ap
->max_inactivity
;
200 if (time_before(jiffies
, sta
->last_rx
+ ap
->max_inactivity
)) {
201 /* station activity detected; reset timeout state */
202 sta
->timeout_next
= STA_NULLFUNC
;
203 next_time
= sta
->last_rx
+ ap
->max_inactivity
;
204 } else if (sta
->timeout_next
== STA_DISASSOC
&&
205 !(sta
->flags
& WLAN_STA_PENDING_POLL
)) {
206 /* STA ACKed data nullfunc frame poll */
207 sta
->timeout_next
= STA_NULLFUNC
;
208 next_time
= jiffies
+ ap
->max_inactivity
;
212 sta
->timer
.expires
= next_time
;
213 add_timer(&sta
->timer
);
218 sta
->timeout_next
= STA_DEAUTH
;
220 if (sta
->timeout_next
== STA_DEAUTH
&& !(sta
->flags
& WLAN_STA_PERM
)) {
221 spin_lock(&ap
->sta_table_lock
);
222 ap_sta_hash_del(ap
, sta
);
223 list_del(&sta
->list
);
224 spin_unlock(&ap
->sta_table_lock
);
225 sta
->flags
&= ~(WLAN_STA_AUTH
| WLAN_STA_ASSOC
);
226 } else if (sta
->timeout_next
== STA_DISASSOC
)
227 sta
->flags
&= ~WLAN_STA_ASSOC
;
229 if (was_assoc
&& !(sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
230 hostap_event_expired_sta(local
->dev
, sta
);
232 if (sta
->timeout_next
== STA_DEAUTH
&& sta
->aid
> 0 &&
233 !skb_queue_empty(&sta
->tx_buf
)) {
234 hostap_set_tim(local
, sta
->aid
, 0);
235 sta
->flags
&= ~WLAN_STA_TIM
;
239 if (ap
->autom_ap_wds
) {
240 PDEBUG(DEBUG_AP
, "%s: removing automatic WDS "
241 "connection to AP " MACSTR
"\n",
242 local
->dev
->name
, MAC2STR(sta
->addr
));
243 hostap_wds_link_oper(local
, sta
->addr
, WDS_DEL
);
245 } else if (sta
->timeout_next
== STA_NULLFUNC
) {
246 /* send data frame to poll STA and check whether this frame
248 /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but
249 * it is apparently not retried so TX Exc events are not
251 sta
->flags
|= WLAN_STA_PENDING_POLL
;
252 prism2_send_mgmt(local
->dev
, IEEE80211_FTYPE_DATA
|
253 IEEE80211_STYPE_DATA
, NULL
, 0,
254 sta
->addr
, ap
->tx_callback_poll
);
256 int deauth
= sta
->timeout_next
== STA_DEAUTH
;
258 PDEBUG(DEBUG_AP
, "%s: sending %s info to STA " MACSTR
259 "(last=%lu, jiffies=%lu)\n",
261 deauth
? "deauthentication" : "disassociation",
262 MAC2STR(sta
->addr
), sta
->last_rx
, jiffies
);
264 resp
= cpu_to_le16(deauth
? WLAN_REASON_PREV_AUTH_NOT_VALID
:
265 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
);
266 prism2_send_mgmt(local
->dev
, IEEE80211_FTYPE_MGMT
|
267 (deauth
? IEEE80211_STYPE_DEAUTH
:
268 IEEE80211_STYPE_DISASSOC
),
269 (char *) &resp
, 2, sta
->addr
, 0);
272 if (sta
->timeout_next
== STA_DEAUTH
) {
273 if (sta
->flags
& WLAN_STA_PERM
) {
274 PDEBUG(DEBUG_AP
, "%s: STA " MACSTR
" would have been "
275 "removed, but it has 'perm' flag\n",
276 local
->dev
->name
, MAC2STR(sta
->addr
));
278 ap_free_sta(ap
, sta
);
282 if (sta
->timeout_next
== STA_NULLFUNC
) {
283 sta
->timeout_next
= STA_DISASSOC
;
284 sta
->timer
.expires
= jiffies
+ AP_DISASSOC_DELAY
;
286 sta
->timeout_next
= STA_DEAUTH
;
287 sta
->timer
.expires
= jiffies
+ AP_DEAUTH_DELAY
;
290 add_timer(&sta
->timer
);
294 void hostap_deauth_all_stas(struct net_device
*dev
, struct ap_data
*ap
,
301 PDEBUG(DEBUG_AP
, "%s: Deauthenticate all stations\n", dev
->name
);
302 memset(addr
, 0xff, ETH_ALEN
);
304 resp
= __constant_cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID
);
306 /* deauth message sent; try to resend it few times; the message is
307 * broadcast, so it may be delayed until next DTIM; there is not much
308 * else we can do at this point since the driver is going to be shut
310 for (i
= 0; i
< 5; i
++) {
311 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
|
312 IEEE80211_STYPE_DEAUTH
,
313 (char *) &resp
, 2, addr
, 0);
315 if (!resend
|| ap
->num_sta
<= 0)
323 static int ap_control_proc_read(char *page
, char **start
, off_t off
,
324 int count
, int *eof
, void *data
)
327 struct ap_data
*ap
= (struct ap_data
*) data
;
329 struct mac_entry
*entry
;
336 switch (ap
->mac_restrictions
.policy
) {
337 case MAC_POLICY_OPEN
:
340 case MAC_POLICY_ALLOW
:
341 policy_txt
= "allow";
343 case MAC_POLICY_DENY
:
347 policy_txt
= "unknown";
350 p
+= sprintf(p
, "MAC policy: %s\n", policy_txt
);
351 p
+= sprintf(p
, "MAC entries: %u\n", ap
->mac_restrictions
.entries
);
352 p
+= sprintf(p
, "MAC list:\n");
353 spin_lock_bh(&ap
->mac_restrictions
.lock
);
354 list_for_each_entry(entry
, &ap
->mac_restrictions
.mac_list
, list
) {
355 if (p
- page
> PAGE_SIZE
- 80) {
356 p
+= sprintf(p
, "All entries did not fit one page.\n");
360 p
+= sprintf(p
, MACSTR
"\n", MAC2STR(entry
->addr
));
362 spin_unlock_bh(&ap
->mac_restrictions
.lock
);
368 int ap_control_add_mac(struct mac_restrictions
*mac_restrictions
, u8
*mac
)
370 struct mac_entry
*entry
;
372 entry
= kmalloc(sizeof(struct mac_entry
), GFP_KERNEL
);
376 memcpy(entry
->addr
, mac
, ETH_ALEN
);
378 spin_lock_bh(&mac_restrictions
->lock
);
379 list_add_tail(&entry
->list
, &mac_restrictions
->mac_list
);
380 mac_restrictions
->entries
++;
381 spin_unlock_bh(&mac_restrictions
->lock
);
387 int ap_control_del_mac(struct mac_restrictions
*mac_restrictions
, u8
*mac
)
389 struct list_head
*ptr
;
390 struct mac_entry
*entry
;
392 spin_lock_bh(&mac_restrictions
->lock
);
393 for (ptr
= mac_restrictions
->mac_list
.next
;
394 ptr
!= &mac_restrictions
->mac_list
; ptr
= ptr
->next
) {
395 entry
= list_entry(ptr
, struct mac_entry
, list
);
397 if (memcmp(entry
->addr
, mac
, ETH_ALEN
) == 0) {
400 mac_restrictions
->entries
--;
401 spin_unlock_bh(&mac_restrictions
->lock
);
405 spin_unlock_bh(&mac_restrictions
->lock
);
410 static int ap_control_mac_deny(struct mac_restrictions
*mac_restrictions
,
413 struct mac_entry
*entry
;
416 if (mac_restrictions
->policy
== MAC_POLICY_OPEN
)
419 spin_lock_bh(&mac_restrictions
->lock
);
420 list_for_each_entry(entry
, &mac_restrictions
->mac_list
, list
) {
421 if (memcmp(entry
->addr
, mac
, ETH_ALEN
) == 0) {
426 spin_unlock_bh(&mac_restrictions
->lock
);
428 if (mac_restrictions
->policy
== MAC_POLICY_ALLOW
)
435 void ap_control_flush_macs(struct mac_restrictions
*mac_restrictions
)
437 struct list_head
*ptr
, *n
;
438 struct mac_entry
*entry
;
440 if (mac_restrictions
->entries
== 0)
443 spin_lock_bh(&mac_restrictions
->lock
);
444 for (ptr
= mac_restrictions
->mac_list
.next
, n
= ptr
->next
;
445 ptr
!= &mac_restrictions
->mac_list
;
446 ptr
= n
, n
= ptr
->next
) {
447 entry
= list_entry(ptr
, struct mac_entry
, list
);
451 mac_restrictions
->entries
= 0;
452 spin_unlock_bh(&mac_restrictions
->lock
);
456 int ap_control_kick_mac(struct ap_data
*ap
, struct net_device
*dev
, u8
*mac
)
458 struct sta_info
*sta
;
461 spin_lock_bh(&ap
->sta_table_lock
);
462 sta
= ap_get_sta(ap
, mac
);
464 ap_sta_hash_del(ap
, sta
);
465 list_del(&sta
->list
);
467 spin_unlock_bh(&ap
->sta_table_lock
);
472 resp
= cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID
);
473 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
| IEEE80211_STYPE_DEAUTH
,
474 (char *) &resp
, 2, sta
->addr
, 0);
476 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
477 hostap_event_expired_sta(dev
, sta
);
479 ap_free_sta(ap
, sta
);
484 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
487 void ap_control_kickall(struct ap_data
*ap
)
489 struct list_head
*ptr
, *n
;
490 struct sta_info
*sta
;
492 spin_lock_bh(&ap
->sta_table_lock
);
493 for (ptr
= ap
->sta_list
.next
, n
= ptr
->next
; ptr
!= &ap
->sta_list
;
494 ptr
= n
, n
= ptr
->next
) {
495 sta
= list_entry(ptr
, struct sta_info
, list
);
496 ap_sta_hash_del(ap
, sta
);
497 list_del(&sta
->list
);
498 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&& sta
->local
)
499 hostap_event_expired_sta(sta
->local
->dev
, sta
);
500 ap_free_sta(ap
, sta
);
502 spin_unlock_bh(&ap
->sta_table_lock
);
506 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
508 #define PROC_LIMIT (PAGE_SIZE - 80)
510 static int prism2_ap_proc_read(char *page
, char **start
, off_t off
,
511 int count
, int *eof
, void *data
)
514 struct ap_data
*ap
= (struct ap_data
*) data
;
515 struct sta_info
*sta
;
518 if (off
> PROC_LIMIT
) {
523 p
+= sprintf(p
, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n");
524 spin_lock_bh(&ap
->sta_table_lock
);
525 list_for_each_entry(sta
, &ap
->sta_list
, list
) {
529 p
+= sprintf(p
, MACSTR
" %d %d %d %d '", MAC2STR(sta
->addr
),
530 sta
->u
.ap
.channel
, sta
->last_rx_signal
,
531 sta
->last_rx_silence
, sta
->last_rx_rate
);
532 for (i
= 0; i
< sta
->u
.ap
.ssid_len
; i
++)
533 p
+= sprintf(p
, ((sta
->u
.ap
.ssid
[i
] >= 32 &&
534 sta
->u
.ap
.ssid
[i
] < 127) ?
537 p
+= sprintf(p
, "'");
538 if (sta
->capability
& WLAN_CAPABILITY_ESS
)
539 p
+= sprintf(p
, " [ESS]");
540 if (sta
->capability
& WLAN_CAPABILITY_IBSS
)
541 p
+= sprintf(p
, " [IBSS]");
542 if (sta
->capability
& WLAN_CAPABILITY_PRIVACY
)
543 p
+= sprintf(p
, " [WEP]");
544 p
+= sprintf(p
, "\n");
546 if ((p
- page
) > PROC_LIMIT
) {
547 printk(KERN_DEBUG
"hostap: ap proc did not fit\n");
551 spin_unlock_bh(&ap
->sta_table_lock
);
553 if ((p
- page
) <= off
) {
560 return (p
- page
- off
);
562 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
565 void hostap_check_sta_fw_version(struct ap_data
*ap
, int sta_fw_ver
)
570 if (sta_fw_ver
== PRISM2_FW_VER(0,8,0)) {
571 PDEBUG(DEBUG_AP
, "Using data::nullfunc ACK workaround - "
572 "firmware upgrade recommended\n");
573 ap
->nullfunc_ack
= 1;
575 ap
->nullfunc_ack
= 0;
577 if (sta_fw_ver
== PRISM2_FW_VER(1,4,2)) {
578 printk(KERN_WARNING
"%s: Warning: secondary station firmware "
579 "version 1.4.2 does not seem to work in Host AP mode\n",
580 ap
->local
->dev
->name
);
585 /* Called only as a tasklet (software IRQ) */
586 static void hostap_ap_tx_cb(struct sk_buff
*skb
, int ok
, void *data
)
588 struct ap_data
*ap
= data
;
590 struct ieee80211_hdr_4addr
*hdr
;
592 if (!ap
->local
->hostapd
|| !ap
->local
->apdev
) {
597 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
598 fc
= le16_to_cpu(hdr
->frame_ctl
);
600 /* Pass the TX callback frame to the hostapd; use 802.11 header version
601 * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */
603 fc
&= ~IEEE80211_FCTL_VERS
;
604 fc
|= ok
? BIT(1) : BIT(0);
605 hdr
->frame_ctl
= cpu_to_le16(fc
);
607 skb
->dev
= ap
->local
->apdev
;
608 skb_pull(skb
, hostap_80211_get_hdrlen(fc
));
609 skb
->pkt_type
= PACKET_OTHERHOST
;
610 skb
->protocol
= __constant_htons(ETH_P_802_2
);
611 memset(skb
->cb
, 0, sizeof(skb
->cb
));
616 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
617 /* Called only as a tasklet (software IRQ) */
618 static void hostap_ap_tx_cb_auth(struct sk_buff
*skb
, int ok
, void *data
)
620 struct ap_data
*ap
= data
;
621 struct net_device
*dev
= ap
->local
->dev
;
622 struct ieee80211_hdr_4addr
*hdr
;
623 u16 fc
, *pos
, auth_alg
, auth_transaction
, status
;
624 struct sta_info
*sta
= NULL
;
627 if (ap
->local
->hostapd
) {
632 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
633 fc
= le16_to_cpu(hdr
->frame_ctl
);
634 if (WLAN_FC_GET_TYPE(fc
) != IEEE80211_FTYPE_MGMT
||
635 WLAN_FC_GET_STYPE(fc
) != IEEE80211_STYPE_AUTH
||
636 skb
->len
< IEEE80211_MGMT_HDR_LEN
+ 6) {
637 printk(KERN_DEBUG
"%s: hostap_ap_tx_cb_auth received invalid "
638 "frame\n", dev
->name
);
643 pos
= (u16
*) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
644 auth_alg
= le16_to_cpu(*pos
++);
645 auth_transaction
= le16_to_cpu(*pos
++);
646 status
= le16_to_cpu(*pos
++);
649 txt
= "frame was not ACKed";
653 spin_lock(&ap
->sta_table_lock
);
654 sta
= ap_get_sta(ap
, hdr
->addr1
);
656 atomic_inc(&sta
->users
);
657 spin_unlock(&ap
->sta_table_lock
);
660 txt
= "STA not found";
664 if (status
== WLAN_STATUS_SUCCESS
&&
665 ((auth_alg
== WLAN_AUTH_OPEN
&& auth_transaction
== 2) ||
666 (auth_alg
== WLAN_AUTH_SHARED_KEY
&& auth_transaction
== 4))) {
667 txt
= "STA authenticated";
668 sta
->flags
|= WLAN_STA_AUTH
;
669 sta
->last_auth
= jiffies
;
670 } else if (status
!= WLAN_STATUS_SUCCESS
)
671 txt
= "authentication failed";
675 atomic_dec(&sta
->users
);
677 PDEBUG(DEBUG_AP
, "%s: " MACSTR
" auth_cb - alg=%d trans#=%d "
679 dev
->name
, MAC2STR(hdr
->addr1
), auth_alg
,
680 auth_transaction
, status
, txt
);
686 /* Called only as a tasklet (software IRQ) */
687 static void hostap_ap_tx_cb_assoc(struct sk_buff
*skb
, int ok
, void *data
)
689 struct ap_data
*ap
= data
;
690 struct net_device
*dev
= ap
->local
->dev
;
691 struct ieee80211_hdr_4addr
*hdr
;
692 u16 fc
, *pos
, status
;
693 struct sta_info
*sta
= NULL
;
696 if (ap
->local
->hostapd
) {
701 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
702 fc
= le16_to_cpu(hdr
->frame_ctl
);
703 if (WLAN_FC_GET_TYPE(fc
) != IEEE80211_FTYPE_MGMT
||
704 (WLAN_FC_GET_STYPE(fc
) != IEEE80211_STYPE_ASSOC_RESP
&&
705 WLAN_FC_GET_STYPE(fc
) != IEEE80211_STYPE_REASSOC_RESP
) ||
706 skb
->len
< IEEE80211_MGMT_HDR_LEN
+ 4) {
707 printk(KERN_DEBUG
"%s: hostap_ap_tx_cb_assoc received invalid "
708 "frame\n", dev
->name
);
714 txt
= "frame was not ACKed";
718 spin_lock(&ap
->sta_table_lock
);
719 sta
= ap_get_sta(ap
, hdr
->addr1
);
721 atomic_inc(&sta
->users
);
722 spin_unlock(&ap
->sta_table_lock
);
725 txt
= "STA not found";
729 pos
= (u16
*) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
731 status
= le16_to_cpu(*pos
++);
732 if (status
== WLAN_STATUS_SUCCESS
) {
733 if (!(sta
->flags
& WLAN_STA_ASSOC
))
734 hostap_event_new_sta(dev
, sta
);
735 txt
= "STA associated";
736 sta
->flags
|= WLAN_STA_ASSOC
;
737 sta
->last_assoc
= jiffies
;
739 txt
= "association failed";
743 atomic_dec(&sta
->users
);
745 PDEBUG(DEBUG_AP
, "%s: " MACSTR
" assoc_cb - %s\n",
746 dev
->name
, MAC2STR(hdr
->addr1
), txt
);
751 /* Called only as a tasklet (software IRQ); TX callback for poll frames used
752 * in verifying whether the STA is still present. */
753 static void hostap_ap_tx_cb_poll(struct sk_buff
*skb
, int ok
, void *data
)
755 struct ap_data
*ap
= data
;
756 struct ieee80211_hdr_4addr
*hdr
;
757 struct sta_info
*sta
;
761 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
763 spin_lock(&ap
->sta_table_lock
);
764 sta
= ap_get_sta(ap
, hdr
->addr1
);
766 sta
->flags
&= ~WLAN_STA_PENDING_POLL
;
767 spin_unlock(&ap
->sta_table_lock
);
769 PDEBUG(DEBUG_AP
, "%s: STA " MACSTR
" did not ACK activity "
770 "poll frame\n", ap
->local
->dev
->name
,
771 MAC2STR(hdr
->addr1
));
777 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
780 void hostap_init_data(local_info_t
*local
)
782 struct ap_data
*ap
= local
->ap
;
785 printk(KERN_WARNING
"hostap_init_data: ap == NULL\n");
788 memset(ap
, 0, sizeof(struct ap_data
));
791 ap
->ap_policy
= GET_INT_PARM(other_ap_policy
, local
->card_idx
);
792 ap
->bridge_packets
= GET_INT_PARM(ap_bridge_packets
, local
->card_idx
);
794 GET_INT_PARM(ap_max_inactivity
, local
->card_idx
) * HZ
;
795 ap
->autom_ap_wds
= GET_INT_PARM(autom_ap_wds
, local
->card_idx
);
797 spin_lock_init(&ap
->sta_table_lock
);
798 INIT_LIST_HEAD(&ap
->sta_list
);
800 /* Initialize task queue structure for AP management */
801 INIT_WORK(&local
->ap
->add_sta_proc_queue
, handle_add_proc_queue
);
803 ap
->tx_callback_idx
=
804 hostap_tx_callback_register(local
, hostap_ap_tx_cb
, ap
);
805 if (ap
->tx_callback_idx
== 0)
806 printk(KERN_WARNING
"%s: failed to register TX callback for "
807 "AP\n", local
->dev
->name
);
808 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
809 INIT_WORK(&local
->ap
->wds_oper_queue
, handle_wds_oper_queue
);
811 ap
->tx_callback_auth
=
812 hostap_tx_callback_register(local
, hostap_ap_tx_cb_auth
, ap
);
813 ap
->tx_callback_assoc
=
814 hostap_tx_callback_register(local
, hostap_ap_tx_cb_assoc
, ap
);
815 ap
->tx_callback_poll
=
816 hostap_tx_callback_register(local
, hostap_ap_tx_cb_poll
, ap
);
817 if (ap
->tx_callback_auth
== 0 || ap
->tx_callback_assoc
== 0 ||
818 ap
->tx_callback_poll
== 0)
819 printk(KERN_WARNING
"%s: failed to register TX callback for "
820 "AP\n", local
->dev
->name
);
822 spin_lock_init(&ap
->mac_restrictions
.lock
);
823 INIT_LIST_HEAD(&ap
->mac_restrictions
.mac_list
);
824 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
830 void hostap_init_ap_proc(local_info_t
*local
)
832 struct ap_data
*ap
= local
->ap
;
834 ap
->proc
= local
->proc
;
835 if (ap
->proc
== NULL
)
838 #ifndef PRISM2_NO_PROCFS_DEBUG
839 create_proc_read_entry("ap_debug", 0, ap
->proc
,
840 ap_debug_proc_read
, ap
);
841 #endif /* PRISM2_NO_PROCFS_DEBUG */
843 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
844 create_proc_read_entry("ap_control", 0, ap
->proc
,
845 ap_control_proc_read
, ap
);
846 create_proc_read_entry("ap", 0, ap
->proc
,
847 prism2_ap_proc_read
, ap
);
848 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
853 void hostap_free_data(struct ap_data
*ap
)
855 struct sta_info
*n
, *sta
;
857 if (ap
== NULL
|| !ap
->initialized
) {
858 printk(KERN_DEBUG
"hostap_free_data: ap has not yet been "
859 "initialized - skip resource freeing\n");
863 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
865 ap
->crypt
->deinit(ap
->crypt_priv
);
866 ap
->crypt
= ap
->crypt_priv
= NULL
;
867 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
869 list_for_each_entry_safe(sta
, n
, &ap
->sta_list
, list
) {
870 ap_sta_hash_del(ap
, sta
);
871 list_del(&sta
->list
);
872 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&& sta
->local
)
873 hostap_event_expired_sta(sta
->local
->dev
, sta
);
874 ap_free_sta(ap
, sta
);
877 #ifndef PRISM2_NO_PROCFS_DEBUG
878 if (ap
->proc
!= NULL
) {
879 remove_proc_entry("ap_debug", ap
->proc
);
881 #endif /* PRISM2_NO_PROCFS_DEBUG */
883 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
884 if (ap
->proc
!= NULL
) {
885 remove_proc_entry("ap", ap
->proc
);
886 remove_proc_entry("ap_control", ap
->proc
);
888 ap_control_flush_macs(&ap
->mac_restrictions
);
889 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
895 /* caller should have mutex for AP STA list handling */
896 static struct sta_info
* ap_get_sta(struct ap_data
*ap
, u8
*sta
)
900 s
= ap
->sta_hash
[STA_HASH(sta
)];
901 while (s
!= NULL
&& memcmp(s
->addr
, sta
, ETH_ALEN
) != 0)
907 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
909 /* Called from timer handler and from scheduled AP queue handlers */
910 static void prism2_send_mgmt(struct net_device
*dev
,
911 u16 type_subtype
, char *body
,
912 int body_len
, u8
*addr
, u16 tx_cb_idx
)
914 struct hostap_interface
*iface
;
916 struct ieee80211_hdr_4addr
*hdr
;
919 struct hostap_skb_tx_data
*meta
;
922 iface
= netdev_priv(dev
);
923 local
= iface
->local
;
924 dev
= local
->dev
; /* always use master radio device */
925 iface
= netdev_priv(dev
);
927 if (!(dev
->flags
& IFF_UP
)) {
928 PDEBUG(DEBUG_AP
, "%s: prism2_send_mgmt - device is not UP - "
929 "cannot send frame\n", dev
->name
);
933 skb
= dev_alloc_skb(sizeof(*hdr
) + body_len
);
935 PDEBUG(DEBUG_AP
, "%s: prism2_send_mgmt failed to allocate "
941 hdrlen
= hostap_80211_get_hdrlen(fc
);
942 hdr
= (struct ieee80211_hdr_4addr
*) skb_put(skb
, hdrlen
);
944 memcpy(skb_put(skb
, body_len
), body
, body_len
);
946 memset(hdr
, 0, hdrlen
);
948 /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11
949 * tx_control instead of using local->tx_control */
952 memcpy(hdr
->addr1
, addr
, ETH_ALEN
); /* DA / RA */
953 if (WLAN_FC_GET_TYPE(fc
) == IEEE80211_FTYPE_DATA
) {
954 fc
|= IEEE80211_FCTL_FROMDS
;
955 memcpy(hdr
->addr2
, dev
->dev_addr
, ETH_ALEN
); /* BSSID */
956 memcpy(hdr
->addr3
, dev
->dev_addr
, ETH_ALEN
); /* SA */
957 } else if (WLAN_FC_GET_TYPE(fc
) == IEEE80211_FTYPE_CTL
) {
958 /* control:ACK does not have addr2 or addr3 */
959 memset(hdr
->addr2
, 0, ETH_ALEN
);
960 memset(hdr
->addr3
, 0, ETH_ALEN
);
962 memcpy(hdr
->addr2
, dev
->dev_addr
, ETH_ALEN
); /* SA */
963 memcpy(hdr
->addr3
, dev
->dev_addr
, ETH_ALEN
); /* BSSID */
966 hdr
->frame_ctl
= cpu_to_le16(fc
);
968 meta
= (struct hostap_skb_tx_data
*) skb
->cb
;
969 memset(meta
, 0, sizeof(*meta
));
970 meta
->magic
= HOSTAP_SKB_TX_DATA_MAGIC
;
972 meta
->tx_cb_idx
= tx_cb_idx
;
975 skb_reset_mac_header(skb
);
976 skb_reset_network_header(skb
);
979 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
982 static int prism2_sta_proc_read(char *page
, char **start
, off_t off
,
983 int count
, int *eof
, void *data
)
986 struct sta_info
*sta
= (struct sta_info
*) data
;
989 /* FIX: possible race condition.. the STA data could have just expired,
990 * but proc entry was still here so that the read could have started;
991 * some locking should be done here.. */
998 p
+= sprintf(p
, "%s=" MACSTR
"\nusers=%d\naid=%d\n"
999 "flags=0x%04x%s%s%s%s%s%s%s\n"
1000 "capability=0x%02x\nlisten_interval=%d\nsupported_rates=",
1001 sta
->ap
? "AP" : "STA",
1002 MAC2STR(sta
->addr
), atomic_read(&sta
->users
), sta
->aid
,
1004 sta
->flags
& WLAN_STA_AUTH
? " AUTH" : "",
1005 sta
->flags
& WLAN_STA_ASSOC
? " ASSOC" : "",
1006 sta
->flags
& WLAN_STA_PS
? " PS" : "",
1007 sta
->flags
& WLAN_STA_TIM
? " TIM" : "",
1008 sta
->flags
& WLAN_STA_PERM
? " PERM" : "",
1009 sta
->flags
& WLAN_STA_AUTHORIZED
? " AUTHORIZED" : "",
1010 sta
->flags
& WLAN_STA_PENDING_POLL
? " POLL" : "",
1011 sta
->capability
, sta
->listen_interval
);
1012 /* supported_rates: 500 kbit/s units with msb ignored */
1013 for (i
= 0; i
< sizeof(sta
->supported_rates
); i
++)
1014 if (sta
->supported_rates
[i
] != 0)
1015 p
+= sprintf(p
, "%d%sMbps ",
1016 (sta
->supported_rates
[i
] & 0x7f) / 2,
1017 sta
->supported_rates
[i
] & 1 ? ".5" : "");
1018 p
+= sprintf(p
, "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n"
1019 "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n"
1021 "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n"
1022 "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n"
1023 "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n"
1025 "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n",
1026 jiffies
, sta
->last_auth
, sta
->last_assoc
, sta
->last_rx
,
1028 sta
->rx_packets
, sta
->tx_packets
, sta
->rx_bytes
,
1029 sta
->tx_bytes
, skb_queue_len(&sta
->tx_buf
),
1030 sta
->last_rx_silence
,
1031 sta
->last_rx_signal
, sta
->last_rx_rate
/ 10,
1032 sta
->last_rx_rate
% 10 ? ".5" : "",
1033 sta
->tx_rate
, sta
->tx_count
[0], sta
->tx_count
[1],
1034 sta
->tx_count
[2], sta
->tx_count
[3], sta
->rx_count
[0],
1035 sta
->rx_count
[1], sta
->rx_count
[2], sta
->rx_count
[3]);
1036 if (sta
->crypt
&& sta
->crypt
->ops
&& sta
->crypt
->ops
->print_stats
)
1037 p
= sta
->crypt
->ops
->print_stats(p
, sta
->crypt
->priv
);
1038 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1040 if (sta
->u
.ap
.channel
>= 0)
1041 p
+= sprintf(p
, "channel=%d\n", sta
->u
.ap
.channel
);
1042 p
+= sprintf(p
, "ssid=");
1043 for (i
= 0; i
< sta
->u
.ap
.ssid_len
; i
++)
1044 p
+= sprintf(p
, ((sta
->u
.ap
.ssid
[i
] >= 32 &&
1045 sta
->u
.ap
.ssid
[i
] < 127) ?
1048 p
+= sprintf(p
, "\n");
1050 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1056 static void handle_add_proc_queue(struct work_struct
*work
)
1058 struct ap_data
*ap
= container_of(work
, struct ap_data
,
1059 add_sta_proc_queue
);
1060 struct sta_info
*sta
;
1062 struct add_sta_proc_data
*entry
, *prev
;
1064 entry
= ap
->add_sta_proc_entries
;
1065 ap
->add_sta_proc_entries
= NULL
;
1068 spin_lock_bh(&ap
->sta_table_lock
);
1069 sta
= ap_get_sta(ap
, entry
->addr
);
1071 atomic_inc(&sta
->users
);
1072 spin_unlock_bh(&ap
->sta_table_lock
);
1075 sprintf(name
, MACSTR
, MAC2STR(sta
->addr
));
1076 sta
->proc
= create_proc_read_entry(
1078 prism2_sta_proc_read
, sta
);
1080 atomic_dec(&sta
->users
);
1084 entry
= entry
->next
;
1090 static struct sta_info
* ap_add_sta(struct ap_data
*ap
, u8
*addr
)
1092 struct sta_info
*sta
;
1094 sta
= kzalloc(sizeof(struct sta_info
), GFP_ATOMIC
);
1096 PDEBUG(DEBUG_AP
, "AP: kmalloc failed\n");
1100 /* initialize STA info data */
1101 sta
->local
= ap
->local
;
1102 skb_queue_head_init(&sta
->tx_buf
);
1103 memcpy(sta
->addr
, addr
, ETH_ALEN
);
1105 atomic_inc(&sta
->users
);
1106 spin_lock_bh(&ap
->sta_table_lock
);
1107 list_add(&sta
->list
, &ap
->sta_list
);
1109 ap_sta_hash_add(ap
, sta
);
1110 spin_unlock_bh(&ap
->sta_table_lock
);
1113 struct add_sta_proc_data
*entry
;
1114 /* schedule a non-interrupt context process to add a procfs
1115 * entry for the STA since procfs code use GFP_KERNEL */
1116 entry
= kmalloc(sizeof(*entry
), GFP_ATOMIC
);
1118 memcpy(entry
->addr
, sta
->addr
, ETH_ALEN
);
1119 entry
->next
= ap
->add_sta_proc_entries
;
1120 ap
->add_sta_proc_entries
= entry
;
1121 schedule_work(&ap
->add_sta_proc_queue
);
1123 printk(KERN_DEBUG
"Failed to add STA proc data\n");
1126 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1127 init_timer(&sta
->timer
);
1128 sta
->timer
.expires
= jiffies
+ ap
->max_inactivity
;
1129 sta
->timer
.data
= (unsigned long) sta
;
1130 sta
->timer
.function
= ap_handle_timer
;
1131 if (!ap
->local
->hostapd
)
1132 add_timer(&sta
->timer
);
1133 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1139 static int ap_tx_rate_ok(int rateidx
, struct sta_info
*sta
,
1140 local_info_t
*local
)
1142 if (rateidx
> sta
->tx_max_rate
||
1143 !(sta
->tx_supp_rates
& (1 << rateidx
)))
1146 if (local
->tx_rate_control
!= 0 &&
1147 !(local
->tx_rate_control
& (1 << rateidx
)))
1154 static void prism2_check_tx_rates(struct sta_info
*sta
)
1158 sta
->tx_supp_rates
= 0;
1159 for (i
= 0; i
< sizeof(sta
->supported_rates
); i
++) {
1160 if ((sta
->supported_rates
[i
] & 0x7f) == 2)
1161 sta
->tx_supp_rates
|= WLAN_RATE_1M
;
1162 if ((sta
->supported_rates
[i
] & 0x7f) == 4)
1163 sta
->tx_supp_rates
|= WLAN_RATE_2M
;
1164 if ((sta
->supported_rates
[i
] & 0x7f) == 11)
1165 sta
->tx_supp_rates
|= WLAN_RATE_5M5
;
1166 if ((sta
->supported_rates
[i
] & 0x7f) == 22)
1167 sta
->tx_supp_rates
|= WLAN_RATE_11M
;
1169 sta
->tx_max_rate
= sta
->tx_rate
= sta
->tx_rate_idx
= 0;
1170 if (sta
->tx_supp_rates
& WLAN_RATE_1M
) {
1171 sta
->tx_max_rate
= 0;
1172 if (ap_tx_rate_ok(0, sta
, sta
->local
)) {
1174 sta
->tx_rate_idx
= 0;
1177 if (sta
->tx_supp_rates
& WLAN_RATE_2M
) {
1178 sta
->tx_max_rate
= 1;
1179 if (ap_tx_rate_ok(1, sta
, sta
->local
)) {
1181 sta
->tx_rate_idx
= 1;
1184 if (sta
->tx_supp_rates
& WLAN_RATE_5M5
) {
1185 sta
->tx_max_rate
= 2;
1186 if (ap_tx_rate_ok(2, sta
, sta
->local
)) {
1188 sta
->tx_rate_idx
= 2;
1191 if (sta
->tx_supp_rates
& WLAN_RATE_11M
) {
1192 sta
->tx_max_rate
= 3;
1193 if (ap_tx_rate_ok(3, sta
, sta
->local
)) {
1195 sta
->tx_rate_idx
= 3;
1201 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1203 static void ap_crypt_init(struct ap_data
*ap
)
1205 ap
->crypt
= ieee80211_get_crypto_ops("WEP");
1208 if (ap
->crypt
->init
) {
1209 ap
->crypt_priv
= ap
->crypt
->init(0);
1210 if (ap
->crypt_priv
== NULL
)
1213 u8 key
[WEP_KEY_LEN
];
1214 get_random_bytes(key
, WEP_KEY_LEN
);
1215 ap
->crypt
->set_key(key
, WEP_KEY_LEN
, NULL
,
1221 if (ap
->crypt
== NULL
) {
1222 printk(KERN_WARNING
"AP could not initialize WEP: load module "
1223 "ieee80211_crypt_wep.ko\n");
1228 /* Generate challenge data for shared key authentication. IEEE 802.11 specifies
1229 * that WEP algorithm is used for generating challange. This should be unique,
1230 * but otherwise there is not really need for randomness etc. Initialize WEP
1231 * with pseudo random key and then use increasing IV to get unique challenge
1234 * Called only as a scheduled task for pending AP frames.
1236 static char * ap_auth_make_challenge(struct ap_data
*ap
)
1239 struct sk_buff
*skb
;
1241 if (ap
->crypt
== NULL
) {
1243 if (ap
->crypt
== NULL
)
1247 tmpbuf
= kmalloc(WLAN_AUTH_CHALLENGE_LEN
, GFP_ATOMIC
);
1248 if (tmpbuf
== NULL
) {
1249 PDEBUG(DEBUG_AP
, "AP: kmalloc failed for challenge\n");
1253 skb
= dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN
+
1254 ap
->crypt
->extra_mpdu_prefix_len
+
1255 ap
->crypt
->extra_mpdu_postfix_len
);
1261 skb_reserve(skb
, ap
->crypt
->extra_mpdu_prefix_len
);
1262 memset(skb_put(skb
, WLAN_AUTH_CHALLENGE_LEN
), 0,
1263 WLAN_AUTH_CHALLENGE_LEN
);
1264 if (ap
->crypt
->encrypt_mpdu(skb
, 0, ap
->crypt_priv
)) {
1270 skb_copy_from_linear_data_offset(skb
, ap
->crypt
->extra_mpdu_prefix_len
,
1271 tmpbuf
, WLAN_AUTH_CHALLENGE_LEN
);
1278 /* Called only as a scheduled task for pending AP frames. */
1279 static void handle_authen(local_info_t
*local
, struct sk_buff
*skb
,
1280 struct hostap_80211_rx_status
*rx_stats
)
1282 struct net_device
*dev
= local
->dev
;
1283 struct ieee80211_hdr_4addr
*hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
1285 struct ap_data
*ap
= local
->ap
;
1286 char body
[8 + WLAN_AUTH_CHALLENGE_LEN
], *challenge
= NULL
;
1288 u16 auth_alg
, auth_transaction
, status_code
, *pos
;
1289 u16 resp
= WLAN_STATUS_SUCCESS
, fc
;
1290 struct sta_info
*sta
= NULL
;
1291 struct ieee80211_crypt_data
*crypt
;
1294 len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
1296 fc
= le16_to_cpu(hdr
->frame_ctl
);
1297 hdrlen
= hostap_80211_get_hdrlen(fc
);
1300 PDEBUG(DEBUG_AP
, "%s: handle_authen - too short payload "
1301 "(len=%d) from " MACSTR
"\n", dev
->name
, len
,
1302 MAC2STR(hdr
->addr2
));
1306 spin_lock_bh(&local
->ap
->sta_table_lock
);
1307 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1309 atomic_inc(&sta
->users
);
1310 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1312 if (sta
&& sta
->crypt
)
1316 if (skb
->len
>= hdrlen
+ 3)
1317 idx
= skb
->data
[hdrlen
+ 3] >> 6;
1318 crypt
= local
->crypt
[idx
];
1321 pos
= (u16
*) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
1322 auth_alg
= __le16_to_cpu(*pos
);
1324 auth_transaction
= __le16_to_cpu(*pos
);
1326 status_code
= __le16_to_cpu(*pos
);
1329 if (memcmp(dev
->dev_addr
, hdr
->addr2
, ETH_ALEN
) == 0 ||
1330 ap_control_mac_deny(&ap
->mac_restrictions
, hdr
->addr2
)) {
1331 txt
= "authentication denied";
1332 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1336 if (((local
->auth_algs
& PRISM2_AUTH_OPEN
) &&
1337 auth_alg
== WLAN_AUTH_OPEN
) ||
1338 ((local
->auth_algs
& PRISM2_AUTH_SHARED_KEY
) &&
1339 crypt
&& auth_alg
== WLAN_AUTH_SHARED_KEY
)) {
1341 txt
= "unsupported algorithm";
1342 resp
= WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
;
1348 if (*u
== WLAN_EID_CHALLENGE
) {
1349 if (*(u
+ 1) != WLAN_AUTH_CHALLENGE_LEN
) {
1350 txt
= "invalid challenge len";
1351 resp
= WLAN_STATUS_CHALLENGE_FAIL
;
1354 if (len
- 8 < WLAN_AUTH_CHALLENGE_LEN
) {
1355 txt
= "challenge underflow";
1356 resp
= WLAN_STATUS_CHALLENGE_FAIL
;
1359 challenge
= (char *) (u
+ 2);
1363 if (sta
&& sta
->ap
) {
1364 if (time_after(jiffies
, sta
->u
.ap
.last_beacon
+
1365 (10 * sta
->listen_interval
* HZ
) / 1024)) {
1366 PDEBUG(DEBUG_AP
, "%s: no beacons received for a while,"
1367 " assuming AP " MACSTR
" is now STA\n",
1368 dev
->name
, MAC2STR(sta
->addr
));
1371 sta
->u
.sta
.challenge
= NULL
;
1373 txt
= "AP trying to authenticate?";
1374 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1379 if ((auth_alg
== WLAN_AUTH_OPEN
&& auth_transaction
== 1) ||
1380 (auth_alg
== WLAN_AUTH_SHARED_KEY
&&
1381 (auth_transaction
== 1 ||
1382 (auth_transaction
== 3 && sta
!= NULL
&&
1383 sta
->u
.sta
.challenge
!= NULL
)))) {
1385 txt
= "unknown authentication transaction number";
1386 resp
= WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION
;
1393 if (local
->ap
->num_sta
>= MAX_STA_COUNT
) {
1394 /* FIX: might try to remove some old STAs first? */
1395 txt
= "no more room for new STAs";
1396 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1400 sta
= ap_add_sta(local
->ap
, hdr
->addr2
);
1402 txt
= "ap_add_sta failed";
1403 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1409 case WLAN_AUTH_OPEN
:
1411 /* IEEE 802.11 standard is not completely clear about
1412 * whether STA is considered authenticated after
1413 * authentication OK frame has been send or after it
1414 * has been ACKed. In order to reduce interoperability
1415 * issues, mark the STA authenticated before ACK. */
1416 sta
->flags
|= WLAN_STA_AUTH
;
1419 case WLAN_AUTH_SHARED_KEY
:
1420 if (auth_transaction
== 1) {
1421 if (sta
->u
.sta
.challenge
== NULL
) {
1422 sta
->u
.sta
.challenge
=
1423 ap_auth_make_challenge(local
->ap
);
1424 if (sta
->u
.sta
.challenge
== NULL
) {
1425 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1430 if (sta
->u
.sta
.challenge
== NULL
||
1431 challenge
== NULL
||
1432 memcmp(sta
->u
.sta
.challenge
, challenge
,
1433 WLAN_AUTH_CHALLENGE_LEN
) != 0 ||
1434 !(fc
& IEEE80211_FCTL_PROTECTED
)) {
1435 txt
= "challenge response incorrect";
1436 resp
= WLAN_STATUS_CHALLENGE_FAIL
;
1440 txt
= "challenge OK - authOK";
1441 /* IEEE 802.11 standard is not completely clear about
1442 * whether STA is considered authenticated after
1443 * authentication OK frame has been send or after it
1444 * has been ACKed. In order to reduce interoperability
1445 * issues, mark the STA authenticated before ACK. */
1446 sta
->flags
|= WLAN_STA_AUTH
;
1447 kfree(sta
->u
.sta
.challenge
);
1448 sta
->u
.sta
.challenge
= NULL
;
1455 *pos
= cpu_to_le16(auth_alg
);
1457 *pos
= cpu_to_le16(auth_transaction
+ 1);
1459 *pos
= cpu_to_le16(resp
); /* status_code */
1463 if (resp
== WLAN_STATUS_SUCCESS
&& sta
!= NULL
&&
1464 sta
->u
.sta
.challenge
!= NULL
&&
1465 auth_alg
== WLAN_AUTH_SHARED_KEY
&& auth_transaction
== 1) {
1466 u8
*tmp
= (u8
*) pos
;
1467 *tmp
++ = WLAN_EID_CHALLENGE
;
1468 *tmp
++ = WLAN_AUTH_CHALLENGE_LEN
;
1470 memcpy(pos
, sta
->u
.sta
.challenge
, WLAN_AUTH_CHALLENGE_LEN
);
1471 olen
+= 2 + WLAN_AUTH_CHALLENGE_LEN
;
1474 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
| IEEE80211_STYPE_AUTH
,
1475 body
, olen
, hdr
->addr2
, ap
->tx_callback_auth
);
1478 sta
->last_rx
= jiffies
;
1479 atomic_dec(&sta
->users
);
1483 PDEBUG(DEBUG_AP
, "%s: " MACSTR
" auth (alg=%d trans#=%d "
1484 "stat=%d len=%d fc=%04x) ==> %d (%s)\n",
1485 dev
->name
, MAC2STR(hdr
->addr2
), auth_alg
,
1486 auth_transaction
, status_code
, len
, fc
, resp
, txt
);
1491 /* Called only as a scheduled task for pending AP frames. */
1492 static void handle_assoc(local_info_t
*local
, struct sk_buff
*skb
,
1493 struct hostap_80211_rx_status
*rx_stats
, int reassoc
)
1495 struct net_device
*dev
= local
->dev
;
1496 struct ieee80211_hdr_4addr
*hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
1497 char body
[12], *p
, *lpos
;
1500 u16 resp
= WLAN_STATUS_SUCCESS
;
1501 struct sta_info
*sta
= NULL
;
1502 int send_deauth
= 0;
1504 u8 prev_ap
[ETH_ALEN
];
1506 left
= len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
1508 if (len
< (reassoc
? 10 : 4)) {
1509 PDEBUG(DEBUG_AP
, "%s: handle_assoc - too short payload "
1510 "(len=%d, reassoc=%d) from " MACSTR
"\n",
1511 dev
->name
, len
, reassoc
, MAC2STR(hdr
->addr2
));
1515 spin_lock_bh(&local
->ap
->sta_table_lock
);
1516 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1517 if (sta
== NULL
|| (sta
->flags
& WLAN_STA_AUTH
) == 0) {
1518 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1519 txt
= "trying to associate before authentication";
1521 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1522 sta
= NULL
; /* do not decrement sta->users */
1525 atomic_inc(&sta
->users
);
1526 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1528 pos
= (u16
*) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
1529 sta
->capability
= __le16_to_cpu(*pos
);
1531 sta
->listen_interval
= __le16_to_cpu(*pos
);
1535 memcpy(prev_ap
, pos
, ETH_ALEN
);
1536 pos
++; pos
++; pos
++; left
-= 6;
1538 memset(prev_ap
, 0, ETH_ALEN
);
1542 unsigned char *u
= (unsigned char *) pos
;
1544 if (*u
== WLAN_EID_SSID
) {
1549 if (ileft
> left
|| ileft
> MAX_SSID_LEN
) {
1550 txt
= "SSID overflow";
1551 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1555 if (ileft
!= strlen(local
->essid
) ||
1556 memcmp(local
->essid
, u
, ileft
) != 0) {
1557 txt
= "not our SSID";
1558 resp
= WLAN_STATUS_ASSOC_DENIED_UNSPEC
;
1566 if (left
>= 2 && *u
== WLAN_EID_SUPP_RATES
) {
1571 if (ileft
> left
|| ileft
== 0 ||
1572 ileft
> WLAN_SUPP_RATES_MAX
) {
1573 txt
= "SUPP_RATES len error";
1574 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1578 memset(sta
->supported_rates
, 0,
1579 sizeof(sta
->supported_rates
));
1580 memcpy(sta
->supported_rates
, u
, ileft
);
1581 prism2_check_tx_rates(sta
);
1588 PDEBUG(DEBUG_AP
, "%s: assoc from " MACSTR
" with extra"
1589 " data (%d bytes) [",
1590 dev
->name
, MAC2STR(hdr
->addr2
), left
);
1592 PDEBUG2(DEBUG_AP
, "<%02x>", *u
);
1595 PDEBUG2(DEBUG_AP
, "]\n");
1598 txt
= "frame underflow";
1599 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1603 /* get a unique AID */
1605 txt
= "OK, old AID";
1607 spin_lock_bh(&local
->ap
->sta_table_lock
);
1608 for (sta
->aid
= 1; sta
->aid
<= MAX_AID_TABLE_SIZE
; sta
->aid
++)
1609 if (local
->ap
->sta_aid
[sta
->aid
- 1] == NULL
)
1611 if (sta
->aid
> MAX_AID_TABLE_SIZE
) {
1613 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1614 resp
= WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA
;
1615 txt
= "no room for more AIDs";
1617 local
->ap
->sta_aid
[sta
->aid
- 1] = sta
;
1618 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1619 txt
= "OK, new AID";
1627 *pos
= __constant_cpu_to_le16(
1628 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH
);
1631 /* FIX: CF-Pollable and CF-PollReq should be set to match the
1632 * values in beacons/probe responses */
1633 /* FIX: how about privacy and WEP? */
1635 *pos
= __constant_cpu_to_le16(WLAN_CAPABILITY_ESS
);
1639 *pos
= __cpu_to_le16(resp
);
1642 *pos
= __cpu_to_le16((sta
&& sta
->aid
> 0 ? sta
->aid
: 0) |
1643 BIT(14) | BIT(15)); /* AID */
1646 /* Supported rates (Information element) */
1648 *p
++ = WLAN_EID_SUPP_RATES
;
1651 if (local
->tx_rate_control
& WLAN_RATE_1M
) {
1652 *p
++ = local
->basic_rates
& WLAN_RATE_1M
? 0x82 : 0x02;
1655 if (local
->tx_rate_control
& WLAN_RATE_2M
) {
1656 *p
++ = local
->basic_rates
& WLAN_RATE_2M
? 0x84 : 0x04;
1659 if (local
->tx_rate_control
& WLAN_RATE_5M5
) {
1660 *p
++ = local
->basic_rates
& WLAN_RATE_5M5
?
1664 if (local
->tx_rate_control
& WLAN_RATE_11M
) {
1665 *p
++ = local
->basic_rates
& WLAN_RATE_11M
?
1672 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
|
1673 (send_deauth
? IEEE80211_STYPE_DEAUTH
:
1674 (reassoc
? IEEE80211_STYPE_REASSOC_RESP
:
1675 IEEE80211_STYPE_ASSOC_RESP
)),
1676 body
, (u8
*) pos
- (u8
*) body
,
1678 send_deauth
? 0 : local
->ap
->tx_callback_assoc
);
1681 if (resp
== WLAN_STATUS_SUCCESS
) {
1682 sta
->last_rx
= jiffies
;
1683 /* STA will be marked associated from TX callback, if
1684 * AssocResp is ACKed */
1686 atomic_dec(&sta
->users
);
1690 PDEBUG(DEBUG_AP
, "%s: " MACSTR
" %sassoc (len=%d prev_ap=" MACSTR
1691 ") => %d(%d) (%s)\n",
1692 dev
->name
, MAC2STR(hdr
->addr2
), reassoc
? "re" : "", len
,
1693 MAC2STR(prev_ap
), resp
, send_deauth
, txt
);
1698 /* Called only as a scheduled task for pending AP frames. */
1699 static void handle_deauth(local_info_t
*local
, struct sk_buff
*skb
,
1700 struct hostap_80211_rx_status
*rx_stats
)
1702 struct net_device
*dev
= local
->dev
;
1703 struct ieee80211_hdr_4addr
*hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
1704 char *body
= (char *) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
1706 u16 reason_code
, *pos
;
1707 struct sta_info
*sta
= NULL
;
1709 len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
1712 printk("handle_deauth - too short payload (len=%d)\n", len
);
1717 reason_code
= __le16_to_cpu(*pos
);
1719 PDEBUG(DEBUG_AP
, "%s: deauthentication: " MACSTR
" len=%d, "
1720 "reason_code=%d\n", dev
->name
, MAC2STR(hdr
->addr2
), len
,
1723 spin_lock_bh(&local
->ap
->sta_table_lock
);
1724 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1726 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
1727 hostap_event_expired_sta(local
->dev
, sta
);
1728 sta
->flags
&= ~(WLAN_STA_AUTH
| WLAN_STA_ASSOC
);
1730 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1732 printk("%s: deauthentication from " MACSTR
", "
1733 "reason_code=%d, but STA not authenticated\n", dev
->name
,
1734 MAC2STR(hdr
->addr2
), reason_code
);
1739 /* Called only as a scheduled task for pending AP frames. */
1740 static void handle_disassoc(local_info_t
*local
, struct sk_buff
*skb
,
1741 struct hostap_80211_rx_status
*rx_stats
)
1743 struct net_device
*dev
= local
->dev
;
1744 struct ieee80211_hdr_4addr
*hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
1745 char *body
= skb
->data
+ IEEE80211_MGMT_HDR_LEN
;
1747 u16 reason_code
, *pos
;
1748 struct sta_info
*sta
= NULL
;
1750 len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
1753 printk("handle_disassoc - too short payload (len=%d)\n", len
);
1758 reason_code
= __le16_to_cpu(*pos
);
1760 PDEBUG(DEBUG_AP
, "%s: disassociation: " MACSTR
" len=%d, "
1761 "reason_code=%d\n", dev
->name
, MAC2STR(hdr
->addr2
), len
,
1764 spin_lock_bh(&local
->ap
->sta_table_lock
);
1765 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1767 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
1768 hostap_event_expired_sta(local
->dev
, sta
);
1769 sta
->flags
&= ~WLAN_STA_ASSOC
;
1771 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1773 printk("%s: disassociation from " MACSTR
", "
1774 "reason_code=%d, but STA not authenticated\n",
1775 dev
->name
, MAC2STR(hdr
->addr2
), reason_code
);
1780 /* Called only as a scheduled task for pending AP frames. */
1781 static void ap_handle_data_nullfunc(local_info_t
*local
,
1782 struct ieee80211_hdr_4addr
*hdr
)
1784 struct net_device
*dev
= local
->dev
;
1786 /* some STA f/w's seem to require control::ACK frame for
1787 * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does
1789 * send control::ACK for the data::nullfunc */
1791 printk(KERN_DEBUG
"Sending control::ACK for data::nullfunc\n");
1792 prism2_send_mgmt(dev
, IEEE80211_FTYPE_CTL
| IEEE80211_STYPE_ACK
,
1793 NULL
, 0, hdr
->addr2
, 0);
1797 /* Called only as a scheduled task for pending AP frames. */
1798 static void ap_handle_dropped_data(local_info_t
*local
,
1799 struct ieee80211_hdr_4addr
*hdr
)
1801 struct net_device
*dev
= local
->dev
;
1802 struct sta_info
*sta
;
1805 spin_lock_bh(&local
->ap
->sta_table_lock
);
1806 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1808 atomic_inc(&sta
->users
);
1809 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1811 if (sta
!= NULL
&& (sta
->flags
& WLAN_STA_ASSOC
)) {
1812 PDEBUG(DEBUG_AP
, "ap_handle_dropped_data: STA is now okay?\n");
1813 atomic_dec(&sta
->users
);
1817 reason
= __constant_cpu_to_le16(
1818 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA
);
1819 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
|
1820 ((sta
== NULL
|| !(sta
->flags
& WLAN_STA_ASSOC
)) ?
1821 IEEE80211_STYPE_DEAUTH
: IEEE80211_STYPE_DISASSOC
),
1822 (char *) &reason
, sizeof(reason
), hdr
->addr2
, 0);
1825 atomic_dec(&sta
->users
);
1828 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1831 /* Called only as a scheduled task for pending AP frames. */
1832 static void pspoll_send_buffered(local_info_t
*local
, struct sta_info
*sta
,
1833 struct sk_buff
*skb
)
1835 struct hostap_skb_tx_data
*meta
;
1837 if (!(sta
->flags
& WLAN_STA_PS
)) {
1838 /* Station has moved to non-PS mode, so send all buffered
1839 * frames using normal device queue. */
1840 dev_queue_xmit(skb
);
1844 /* add a flag for hostap_handle_sta_tx() to know that this skb should
1845 * be passed through even though STA is using PS */
1846 meta
= (struct hostap_skb_tx_data
*) skb
->cb
;
1847 meta
->flags
|= HOSTAP_TX_FLAGS_BUFFERED_FRAME
;
1848 if (!skb_queue_empty(&sta
->tx_buf
)) {
1849 /* indicate to STA that more frames follow */
1850 meta
->flags
|= HOSTAP_TX_FLAGS_ADD_MOREDATA
;
1852 dev_queue_xmit(skb
);
1856 /* Called only as a scheduled task for pending AP frames. */
1857 static void handle_pspoll(local_info_t
*local
,
1858 struct ieee80211_hdr_4addr
*hdr
,
1859 struct hostap_80211_rx_status
*rx_stats
)
1861 struct net_device
*dev
= local
->dev
;
1862 struct sta_info
*sta
;
1864 struct sk_buff
*skb
;
1866 PDEBUG(DEBUG_PS2
, "handle_pspoll: BSSID=" MACSTR
", TA=" MACSTR
1868 MAC2STR(hdr
->addr1
), MAC2STR(hdr
->addr2
),
1869 !!(le16_to_cpu(hdr
->frame_ctl
) & IEEE80211_FCTL_PM
));
1871 if (memcmp(hdr
->addr1
, dev
->dev_addr
, ETH_ALEN
)) {
1872 PDEBUG(DEBUG_AP
, "handle_pspoll - addr1(BSSID)=" MACSTR
1873 " not own MAC\n", MAC2STR(hdr
->addr1
));
1877 aid
= __le16_to_cpu(hdr
->duration_id
);
1878 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) {
1879 PDEBUG(DEBUG_PS
, " PSPOLL and AID[15:14] not set\n");
1882 aid
&= ~BIT(15) & ~BIT(14);
1883 if (aid
== 0 || aid
> MAX_AID_TABLE_SIZE
) {
1884 PDEBUG(DEBUG_PS
, " invalid aid=%d\n", aid
);
1887 PDEBUG(DEBUG_PS2
, " aid=%d\n", aid
);
1889 spin_lock_bh(&local
->ap
->sta_table_lock
);
1890 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1892 atomic_inc(&sta
->users
);
1893 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1896 PDEBUG(DEBUG_PS
, " STA not found\n");
1899 if (sta
->aid
!= aid
) {
1900 PDEBUG(DEBUG_PS
, " received aid=%i does not match with "
1901 "assoc.aid=%d\n", aid
, sta
->aid
);
1906 * - add timeout for buffering (clear aid in TIM vector if buffer timed
1907 * out (expiry time must be longer than ListenInterval for
1908 * the corresponding STA; "8802-11: 11.2.1.9 AP aging function"
1909 * - what to do, if buffered, pspolled, and sent frame is not ACKed by
1910 * sta; store buffer for later use and leave TIM aid bit set? use
1911 * TX event to check whether frame was ACKed?
1914 while ((skb
= skb_dequeue(&sta
->tx_buf
)) != NULL
) {
1915 /* send buffered frame .. */
1916 PDEBUG(DEBUG_PS2
, "Sending buffered frame to STA after PS POLL"
1917 " (buffer_count=%d)\n", skb_queue_len(&sta
->tx_buf
));
1919 pspoll_send_buffered(local
, sta
, skb
);
1921 if (sta
->flags
& WLAN_STA_PS
) {
1922 /* send only one buffered packet per PS Poll */
1923 /* FIX: should ignore further PS Polls until the
1924 * buffered packet that was just sent is acknowledged
1925 * (Tx or TxExc event) */
1930 if (skb_queue_empty(&sta
->tx_buf
)) {
1931 /* try to clear aid from TIM */
1932 if (!(sta
->flags
& WLAN_STA_TIM
))
1933 PDEBUG(DEBUG_PS2
, "Re-unsetting TIM for aid %d\n",
1935 hostap_set_tim(local
, aid
, 0);
1936 sta
->flags
&= ~WLAN_STA_TIM
;
1939 atomic_dec(&sta
->users
);
1943 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1945 static void handle_wds_oper_queue(struct work_struct
*work
)
1947 struct ap_data
*ap
= container_of(work
, struct ap_data
,
1949 local_info_t
*local
= ap
->local
;
1950 struct wds_oper_data
*entry
, *prev
;
1952 spin_lock_bh(&local
->lock
);
1953 entry
= local
->ap
->wds_oper_entries
;
1954 local
->ap
->wds_oper_entries
= NULL
;
1955 spin_unlock_bh(&local
->lock
);
1958 PDEBUG(DEBUG_AP
, "%s: %s automatic WDS connection "
1959 "to AP " MACSTR
"\n",
1961 entry
->type
== WDS_ADD
? "adding" : "removing",
1962 MAC2STR(entry
->addr
));
1963 if (entry
->type
== WDS_ADD
)
1964 prism2_wds_add(local
, entry
->addr
, 0);
1965 else if (entry
->type
== WDS_DEL
)
1966 prism2_wds_del(local
, entry
->addr
, 0, 1);
1969 entry
= entry
->next
;
1975 /* Called only as a scheduled task for pending AP frames. */
1976 static void handle_beacon(local_info_t
*local
, struct sk_buff
*skb
,
1977 struct hostap_80211_rx_status
*rx_stats
)
1979 struct ieee80211_hdr_4addr
*hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
1980 char *body
= skb
->data
+ IEEE80211_MGMT_HDR_LEN
;
1982 u16
*pos
, beacon_int
, capability
;
1984 unsigned char *supp_rates
= NULL
;
1985 int ssid_len
= 0, supp_rates_len
= 0;
1986 struct sta_info
*sta
= NULL
;
1987 int new_sta
= 0, channel
= -1;
1989 len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
1991 if (len
< 8 + 2 + 2) {
1992 printk(KERN_DEBUG
"handle_beacon - too short payload "
2000 /* Timestamp (8 octets) */
2001 pos
+= 4; left
-= 8;
2002 /* Beacon interval (2 octets) */
2003 beacon_int
= __le16_to_cpu(*pos
);
2005 /* Capability information (2 octets) */
2006 capability
= __le16_to_cpu(*pos
);
2009 if (local
->ap
->ap_policy
!= AP_OTHER_AP_EVEN_IBSS
&&
2010 capability
& WLAN_CAPABILITY_IBSS
)
2015 unsigned char *u
= (unsigned char *) pos
;
2017 if (*u
== WLAN_EID_SSID
) {
2022 if (ileft
> left
|| ileft
> MAX_SSID_LEN
) {
2023 PDEBUG(DEBUG_AP
, "SSID: overflow\n");
2027 if (local
->ap
->ap_policy
== AP_OTHER_AP_SAME_SSID
&&
2028 (ileft
!= strlen(local
->essid
) ||
2029 memcmp(local
->essid
, u
, ileft
) != 0)) {
2041 if (*u
== WLAN_EID_SUPP_RATES
) {
2046 if (ileft
> left
|| ileft
== 0 || ileft
> 8) {
2047 PDEBUG(DEBUG_AP
, " - SUPP_RATES len error\n");
2052 supp_rates_len
= ileft
;
2058 if (*u
== WLAN_EID_DS_PARAMS
) {
2063 if (ileft
> left
|| ileft
!= 1) {
2064 PDEBUG(DEBUG_AP
, " - DS_PARAMS len error\n");
2075 spin_lock_bh(&local
->ap
->sta_table_lock
);
2076 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
2078 atomic_inc(&sta
->users
);
2079 spin_unlock_bh(&local
->ap
->sta_table_lock
);
2084 sta
= ap_add_sta(local
->ap
, hdr
->addr2
);
2086 printk(KERN_INFO
"prism2: kmalloc failed for AP "
2087 "data structure\n");
2090 hostap_event_new_sta(local
->dev
, sta
);
2092 /* mark APs authentication and associated for pseudo ad-hoc
2093 * style communication */
2094 sta
->flags
= WLAN_STA_AUTH
| WLAN_STA_ASSOC
;
2096 if (local
->ap
->autom_ap_wds
) {
2097 hostap_wds_link_oper(local
, sta
->addr
, WDS_ADD
);
2103 sta
->u
.ap
.ssid_len
= ssid_len
;
2104 memcpy(sta
->u
.ap
.ssid
, ssid
, ssid_len
);
2105 sta
->u
.ap
.ssid
[ssid_len
] = '\0';
2107 sta
->u
.ap
.ssid_len
= 0;
2108 sta
->u
.ap
.ssid
[0] = '\0';
2110 sta
->u
.ap
.channel
= channel
;
2112 sta
->rx_bytes
+= len
;
2113 sta
->u
.ap
.last_beacon
= sta
->last_rx
= jiffies
;
2114 sta
->capability
= capability
;
2115 sta
->listen_interval
= beacon_int
;
2117 atomic_dec(&sta
->users
);
2120 memset(sta
->supported_rates
, 0, sizeof(sta
->supported_rates
));
2121 memcpy(sta
->supported_rates
, supp_rates
, supp_rates_len
);
2122 prism2_check_tx_rates(sta
);
2126 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2129 /* Called only as a tasklet. */
2130 static void handle_ap_item(local_info_t
*local
, struct sk_buff
*skb
,
2131 struct hostap_80211_rx_status
*rx_stats
)
2133 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2134 struct net_device
*dev
= local
->dev
;
2135 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2136 u16 fc
, type
, stype
;
2137 struct ieee80211_hdr_4addr
*hdr
;
2139 /* FIX: should give skb->len to handler functions and check that the
2140 * buffer is long enough */
2141 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
2142 fc
= le16_to_cpu(hdr
->frame_ctl
);
2143 type
= WLAN_FC_GET_TYPE(fc
);
2144 stype
= WLAN_FC_GET_STYPE(fc
);
2146 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2147 if (!local
->hostapd
&& type
== IEEE80211_FTYPE_DATA
) {
2148 PDEBUG(DEBUG_AP
, "handle_ap_item - data frame\n");
2150 if (!(fc
& IEEE80211_FCTL_TODS
) ||
2151 (fc
& IEEE80211_FCTL_FROMDS
)) {
2152 if (stype
== IEEE80211_STYPE_NULLFUNC
) {
2153 /* no ToDS nullfunc seems to be used to check
2154 * AP association; so send reject message to
2155 * speed up re-association */
2156 ap_handle_dropped_data(local
, hdr
);
2159 PDEBUG(DEBUG_AP
, " not ToDS frame (fc=0x%04x)\n",
2164 if (memcmp(hdr
->addr1
, dev
->dev_addr
, ETH_ALEN
)) {
2165 PDEBUG(DEBUG_AP
, "handle_ap_item - addr1(BSSID)="
2166 MACSTR
" not own MAC\n",
2167 MAC2STR(hdr
->addr1
));
2171 if (local
->ap
->nullfunc_ack
&&
2172 stype
== IEEE80211_STYPE_NULLFUNC
)
2173 ap_handle_data_nullfunc(local
, hdr
);
2175 ap_handle_dropped_data(local
, hdr
);
2179 if (type
== IEEE80211_FTYPE_MGMT
&& stype
== IEEE80211_STYPE_BEACON
) {
2180 handle_beacon(local
, skb
, rx_stats
);
2183 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2185 if (type
== IEEE80211_FTYPE_CTL
&& stype
== IEEE80211_STYPE_PSPOLL
) {
2186 handle_pspoll(local
, hdr
, rx_stats
);
2190 if (local
->hostapd
) {
2191 PDEBUG(DEBUG_AP
, "Unknown frame in AP queue: type=0x%02x "
2192 "subtype=0x%02x\n", type
, stype
);
2196 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2197 if (type
!= IEEE80211_FTYPE_MGMT
) {
2198 PDEBUG(DEBUG_AP
, "handle_ap_item - not a management frame?\n");
2202 if (memcmp(hdr
->addr1
, dev
->dev_addr
, ETH_ALEN
)) {
2203 PDEBUG(DEBUG_AP
, "handle_ap_item - addr1(DA)=" MACSTR
2204 " not own MAC\n", MAC2STR(hdr
->addr1
));
2208 if (memcmp(hdr
->addr3
, dev
->dev_addr
, ETH_ALEN
)) {
2209 PDEBUG(DEBUG_AP
, "handle_ap_item - addr3(BSSID)=" MACSTR
2210 " not own MAC\n", MAC2STR(hdr
->addr3
));
2215 case IEEE80211_STYPE_ASSOC_REQ
:
2216 handle_assoc(local
, skb
, rx_stats
, 0);
2218 case IEEE80211_STYPE_ASSOC_RESP
:
2219 PDEBUG(DEBUG_AP
, "==> ASSOC RESP (ignored)\n");
2221 case IEEE80211_STYPE_REASSOC_REQ
:
2222 handle_assoc(local
, skb
, rx_stats
, 1);
2224 case IEEE80211_STYPE_REASSOC_RESP
:
2225 PDEBUG(DEBUG_AP
, "==> REASSOC RESP (ignored)\n");
2227 case IEEE80211_STYPE_ATIM
:
2228 PDEBUG(DEBUG_AP
, "==> ATIM (ignored)\n");
2230 case IEEE80211_STYPE_DISASSOC
:
2231 handle_disassoc(local
, skb
, rx_stats
);
2233 case IEEE80211_STYPE_AUTH
:
2234 handle_authen(local
, skb
, rx_stats
);
2236 case IEEE80211_STYPE_DEAUTH
:
2237 handle_deauth(local
, skb
, rx_stats
);
2240 PDEBUG(DEBUG_AP
, "Unknown mgmt frame subtype 0x%02x\n",
2244 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2251 /* Called only as a tasklet (software IRQ) */
2252 void hostap_rx(struct net_device
*dev
, struct sk_buff
*skb
,
2253 struct hostap_80211_rx_status
*rx_stats
)
2255 struct hostap_interface
*iface
;
2256 local_info_t
*local
;
2258 struct ieee80211_hdr_4addr
*hdr
;
2260 iface
= netdev_priv(dev
);
2261 local
= iface
->local
;
2266 local
->stats
.rx_packets
++;
2268 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
2269 fc
= le16_to_cpu(hdr
->frame_ctl
);
2271 if (local
->ap
->ap_policy
== AP_OTHER_AP_SKIP_ALL
&&
2272 WLAN_FC_GET_TYPE(fc
) == IEEE80211_FTYPE_MGMT
&&
2273 WLAN_FC_GET_STYPE(fc
) == IEEE80211_STYPE_BEACON
)
2276 skb
->protocol
= __constant_htons(ETH_P_HOSTAP
);
2277 handle_ap_item(local
, skb
, rx_stats
);
2285 /* Called only as a tasklet (software IRQ) */
2286 static void schedule_packet_send(local_info_t
*local
, struct sta_info
*sta
)
2288 struct sk_buff
*skb
;
2289 struct ieee80211_hdr_4addr
*hdr
;
2290 struct hostap_80211_rx_status rx_stats
;
2292 if (skb_queue_empty(&sta
->tx_buf
))
2295 skb
= dev_alloc_skb(16);
2297 printk(KERN_DEBUG
"%s: schedule_packet_send: skb alloc "
2298 "failed\n", local
->dev
->name
);
2302 hdr
= (struct ieee80211_hdr_4addr
*) skb_put(skb
, 16);
2304 /* Generate a fake pspoll frame to start packet delivery */
2305 hdr
->frame_ctl
= __constant_cpu_to_le16(
2306 IEEE80211_FTYPE_CTL
| IEEE80211_STYPE_PSPOLL
);
2307 memcpy(hdr
->addr1
, local
->dev
->dev_addr
, ETH_ALEN
);
2308 memcpy(hdr
->addr2
, sta
->addr
, ETH_ALEN
);
2309 hdr
->duration_id
= cpu_to_le16(sta
->aid
| BIT(15) | BIT(14));
2311 PDEBUG(DEBUG_PS2
, "%s: Scheduling buffered packet delivery for "
2312 "STA " MACSTR
"\n", local
->dev
->name
, MAC2STR(sta
->addr
));
2314 skb
->dev
= local
->dev
;
2316 memset(&rx_stats
, 0, sizeof(rx_stats
));
2317 hostap_rx(local
->dev
, skb
, &rx_stats
);
2321 int prism2_ap_get_sta_qual(local_info_t
*local
, struct sockaddr addr
[],
2322 struct iw_quality qual
[], int buf_size
,
2325 struct ap_data
*ap
= local
->ap
;
2326 struct list_head
*ptr
;
2329 spin_lock_bh(&ap
->sta_table_lock
);
2331 for (ptr
= ap
->sta_list
.next
; ptr
!= NULL
&& ptr
!= &ap
->sta_list
;
2333 struct sta_info
*sta
= (struct sta_info
*) ptr
;
2335 if (aplist
&& !sta
->ap
)
2337 addr
[count
].sa_family
= ARPHRD_ETHER
;
2338 memcpy(addr
[count
].sa_data
, sta
->addr
, ETH_ALEN
);
2339 if (sta
->last_rx_silence
== 0)
2340 qual
[count
].qual
= sta
->last_rx_signal
< 27 ?
2341 0 : (sta
->last_rx_signal
- 27) * 92 / 127;
2343 qual
[count
].qual
= sta
->last_rx_signal
-
2344 sta
->last_rx_silence
- 35;
2345 qual
[count
].level
= HFA384X_LEVEL_TO_dBm(sta
->last_rx_signal
);
2346 qual
[count
].noise
= HFA384X_LEVEL_TO_dBm(sta
->last_rx_silence
);
2347 qual
[count
].updated
= sta
->last_rx_updated
;
2349 sta
->last_rx_updated
= IW_QUAL_DBM
;
2352 if (count
>= buf_size
)
2355 spin_unlock_bh(&ap
->sta_table_lock
);
2361 /* Translate our list of Access Points & Stations to a card independant
2362 * format that the Wireless Tools will understand - Jean II */
2363 int prism2_ap_translate_scan(struct net_device
*dev
, char *buffer
)
2365 struct hostap_interface
*iface
;
2366 local_info_t
*local
;
2368 struct list_head
*ptr
;
2369 struct iw_event iwe
;
2370 char *current_ev
= buffer
;
2371 char *end_buf
= buffer
+ IW_SCAN_MAX_DATA
;
2372 #if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT)
2376 iface
= netdev_priv(dev
);
2377 local
= iface
->local
;
2380 spin_lock_bh(&ap
->sta_table_lock
);
2382 for (ptr
= ap
->sta_list
.next
; ptr
!= NULL
&& ptr
!= &ap
->sta_list
;
2384 struct sta_info
*sta
= (struct sta_info
*) ptr
;
2386 /* First entry *MUST* be the AP MAC address */
2387 memset(&iwe
, 0, sizeof(iwe
));
2388 iwe
.cmd
= SIOCGIWAP
;
2389 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
2390 memcpy(iwe
.u
.ap_addr
.sa_data
, sta
->addr
, ETH_ALEN
);
2391 iwe
.len
= IW_EV_ADDR_LEN
;
2392 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2395 /* Use the mode to indicate if it's a station or
2396 * an Access Point */
2397 memset(&iwe
, 0, sizeof(iwe
));
2398 iwe
.cmd
= SIOCGIWMODE
;
2400 iwe
.u
.mode
= IW_MODE_MASTER
;
2402 iwe
.u
.mode
= IW_MODE_INFRA
;
2403 iwe
.len
= IW_EV_UINT_LEN
;
2404 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2408 memset(&iwe
, 0, sizeof(iwe
));
2410 if (sta
->last_rx_silence
== 0)
2411 iwe
.u
.qual
.qual
= sta
->last_rx_signal
< 27 ?
2412 0 : (sta
->last_rx_signal
- 27) * 92 / 127;
2414 iwe
.u
.qual
.qual
= sta
->last_rx_signal
-
2415 sta
->last_rx_silence
- 35;
2416 iwe
.u
.qual
.level
= HFA384X_LEVEL_TO_dBm(sta
->last_rx_signal
);
2417 iwe
.u
.qual
.noise
= HFA384X_LEVEL_TO_dBm(sta
->last_rx_silence
);
2418 iwe
.u
.qual
.updated
= sta
->last_rx_updated
;
2419 iwe
.len
= IW_EV_QUAL_LEN
;
2420 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
2423 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2425 memset(&iwe
, 0, sizeof(iwe
));
2426 iwe
.cmd
= SIOCGIWESSID
;
2427 iwe
.u
.data
.length
= sta
->u
.ap
.ssid_len
;
2428 iwe
.u
.data
.flags
= 1;
2429 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
2433 memset(&iwe
, 0, sizeof(iwe
));
2434 iwe
.cmd
= SIOCGIWENCODE
;
2435 if (sta
->capability
& WLAN_CAPABILITY_PRIVACY
)
2437 IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
2439 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
2440 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
2443 /* 0 byte memcpy */);
2445 if (sta
->u
.ap
.channel
> 0 &&
2446 sta
->u
.ap
.channel
<= FREQ_COUNT
) {
2447 memset(&iwe
, 0, sizeof(iwe
));
2448 iwe
.cmd
= SIOCGIWFREQ
;
2449 iwe
.u
.freq
.m
= freq_list
[sta
->u
.ap
.channel
- 1]
2452 current_ev
= iwe_stream_add_event(
2453 current_ev
, end_buf
, &iwe
,
2457 memset(&iwe
, 0, sizeof(iwe
));
2458 iwe
.cmd
= IWEVCUSTOM
;
2459 sprintf(buf
, "beacon_interval=%d",
2460 sta
->listen_interval
);
2461 iwe
.u
.data
.length
= strlen(buf
);
2462 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
2465 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2467 sta
->last_rx_updated
= IW_QUAL_DBM
;
2469 /* To be continued, we should make good use of IWEVCUSTOM */
2472 spin_unlock_bh(&ap
->sta_table_lock
);
2474 return current_ev
- buffer
;
2478 static int prism2_hostapd_add_sta(struct ap_data
*ap
,
2479 struct prism2_hostapd_param
*param
)
2481 struct sta_info
*sta
;
2483 spin_lock_bh(&ap
->sta_table_lock
);
2484 sta
= ap_get_sta(ap
, param
->sta_addr
);
2486 atomic_inc(&sta
->users
);
2487 spin_unlock_bh(&ap
->sta_table_lock
);
2490 sta
= ap_add_sta(ap
, param
->sta_addr
);
2495 if (!(sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&& sta
->local
)
2496 hostap_event_new_sta(sta
->local
->dev
, sta
);
2498 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
;
2499 sta
->last_rx
= jiffies
;
2500 sta
->aid
= param
->u
.add_sta
.aid
;
2501 sta
->capability
= param
->u
.add_sta
.capability
;
2502 sta
->tx_supp_rates
= param
->u
.add_sta
.tx_supp_rates
;
2503 if (sta
->tx_supp_rates
& WLAN_RATE_1M
)
2504 sta
->supported_rates
[0] = 2;
2505 if (sta
->tx_supp_rates
& WLAN_RATE_2M
)
2506 sta
->supported_rates
[1] = 4;
2507 if (sta
->tx_supp_rates
& WLAN_RATE_5M5
)
2508 sta
->supported_rates
[2] = 11;
2509 if (sta
->tx_supp_rates
& WLAN_RATE_11M
)
2510 sta
->supported_rates
[3] = 22;
2511 prism2_check_tx_rates(sta
);
2512 atomic_dec(&sta
->users
);
2517 static int prism2_hostapd_remove_sta(struct ap_data
*ap
,
2518 struct prism2_hostapd_param
*param
)
2520 struct sta_info
*sta
;
2522 spin_lock_bh(&ap
->sta_table_lock
);
2523 sta
= ap_get_sta(ap
, param
->sta_addr
);
2525 ap_sta_hash_del(ap
, sta
);
2526 list_del(&sta
->list
);
2528 spin_unlock_bh(&ap
->sta_table_lock
);
2533 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&& sta
->local
)
2534 hostap_event_expired_sta(sta
->local
->dev
, sta
);
2535 ap_free_sta(ap
, sta
);
2541 static int prism2_hostapd_get_info_sta(struct ap_data
*ap
,
2542 struct prism2_hostapd_param
*param
)
2544 struct sta_info
*sta
;
2546 spin_lock_bh(&ap
->sta_table_lock
);
2547 sta
= ap_get_sta(ap
, param
->sta_addr
);
2549 atomic_inc(&sta
->users
);
2550 spin_unlock_bh(&ap
->sta_table_lock
);
2555 param
->u
.get_info_sta
.inactive_sec
= (jiffies
- sta
->last_rx
) / HZ
;
2557 atomic_dec(&sta
->users
);
2563 static int prism2_hostapd_set_flags_sta(struct ap_data
*ap
,
2564 struct prism2_hostapd_param
*param
)
2566 struct sta_info
*sta
;
2568 spin_lock_bh(&ap
->sta_table_lock
);
2569 sta
= ap_get_sta(ap
, param
->sta_addr
);
2571 sta
->flags
|= param
->u
.set_flags_sta
.flags_or
;
2572 sta
->flags
&= param
->u
.set_flags_sta
.flags_and
;
2574 spin_unlock_bh(&ap
->sta_table_lock
);
2583 static int prism2_hostapd_sta_clear_stats(struct ap_data
*ap
,
2584 struct prism2_hostapd_param
*param
)
2586 struct sta_info
*sta
;
2589 spin_lock_bh(&ap
->sta_table_lock
);
2590 sta
= ap_get_sta(ap
, param
->sta_addr
);
2592 sta
->rx_packets
= sta
->tx_packets
= 0;
2593 sta
->rx_bytes
= sta
->tx_bytes
= 0;
2594 for (rate
= 0; rate
< WLAN_RATE_COUNT
; rate
++) {
2595 sta
->tx_count
[rate
] = 0;
2596 sta
->rx_count
[rate
] = 0;
2599 spin_unlock_bh(&ap
->sta_table_lock
);
2608 int prism2_hostapd(struct ap_data
*ap
, struct prism2_hostapd_param
*param
)
2610 switch (param
->cmd
) {
2611 case PRISM2_HOSTAPD_FLUSH
:
2612 ap_control_kickall(ap
);
2614 case PRISM2_HOSTAPD_ADD_STA
:
2615 return prism2_hostapd_add_sta(ap
, param
);
2616 case PRISM2_HOSTAPD_REMOVE_STA
:
2617 return prism2_hostapd_remove_sta(ap
, param
);
2618 case PRISM2_HOSTAPD_GET_INFO_STA
:
2619 return prism2_hostapd_get_info_sta(ap
, param
);
2620 case PRISM2_HOSTAPD_SET_FLAGS_STA
:
2621 return prism2_hostapd_set_flags_sta(ap
, param
);
2622 case PRISM2_HOSTAPD_STA_CLEAR_STATS
:
2623 return prism2_hostapd_sta_clear_stats(ap
, param
);
2625 printk(KERN_WARNING
"prism2_hostapd: unknown cmd=%d\n",
2632 /* Update station info for host-based TX rate control and return current
2634 static int ap_update_sta_tx_rate(struct sta_info
*sta
, struct net_device
*dev
)
2636 int ret
= sta
->tx_rate
;
2637 struct hostap_interface
*iface
;
2638 local_info_t
*local
;
2640 iface
= netdev_priv(dev
);
2641 local
= iface
->local
;
2643 sta
->tx_count
[sta
->tx_rate_idx
]++;
2644 sta
->tx_since_last_failure
++;
2645 sta
->tx_consecutive_exc
= 0;
2646 if (sta
->tx_since_last_failure
>= WLAN_RATE_UPDATE_COUNT
&&
2647 sta
->tx_rate_idx
< sta
->tx_max_rate
) {
2648 /* use next higher rate */
2649 int old_rate
, new_rate
;
2650 old_rate
= new_rate
= sta
->tx_rate_idx
;
2651 while (new_rate
< sta
->tx_max_rate
) {
2653 if (ap_tx_rate_ok(new_rate
, sta
, local
)) {
2654 sta
->tx_rate_idx
= new_rate
;
2658 if (old_rate
!= sta
->tx_rate_idx
) {
2659 switch (sta
->tx_rate_idx
) {
2660 case 0: sta
->tx_rate
= 10; break;
2661 case 1: sta
->tx_rate
= 20; break;
2662 case 2: sta
->tx_rate
= 55; break;
2663 case 3: sta
->tx_rate
= 110; break;
2664 default: sta
->tx_rate
= 0; break;
2666 PDEBUG(DEBUG_AP
, "%s: STA " MACSTR
" TX rate raised to"
2667 " %d\n", dev
->name
, MAC2STR(sta
->addr
),
2670 sta
->tx_since_last_failure
= 0;
2677 /* Called only from software IRQ. Called for each TX frame prior possible
2678 * encryption and transmit. */
2679 ap_tx_ret
hostap_handle_sta_tx(local_info_t
*local
, struct hostap_tx_data
*tx
)
2681 struct sta_info
*sta
= NULL
;
2682 struct sk_buff
*skb
= tx
->skb
;
2684 struct ieee80211_hdr_4addr
*hdr
;
2685 struct hostap_skb_tx_data
*meta
;
2687 meta
= (struct hostap_skb_tx_data
*) skb
->cb
;
2688 ret
= AP_TX_CONTINUE
;
2689 if (local
->ap
== NULL
|| skb
->len
< 10 ||
2690 meta
->iface
->type
== HOSTAP_INTERFACE_STA
)
2693 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
2695 if (hdr
->addr1
[0] & 0x01) {
2696 /* broadcast/multicast frame - no AP related processing */
2697 if (local
->ap
->num_sta
<= 0)
2702 /* unicast packet - check whether destination STA is associated */
2703 spin_lock(&local
->ap
->sta_table_lock
);
2704 sta
= ap_get_sta(local
->ap
, hdr
->addr1
);
2706 atomic_inc(&sta
->users
);
2707 spin_unlock(&local
->ap
->sta_table_lock
);
2709 if (local
->iw_mode
== IW_MODE_MASTER
&& sta
== NULL
&&
2710 !(meta
->flags
& HOSTAP_TX_FLAGS_WDS
) &&
2711 meta
->iface
->type
!= HOSTAP_INTERFACE_MASTER
&&
2712 meta
->iface
->type
!= HOSTAP_INTERFACE_AP
) {
2714 /* This can happen, e.g., when wlan0 is added to a bridge and
2715 * bridging code does not know which port is the correct target
2716 * for a unicast frame. In this case, the packet is send to all
2717 * ports of the bridge. Since this is a valid scenario, do not
2718 * print out any errors here. */
2719 if (net_ratelimit()) {
2720 printk(KERN_DEBUG
"AP: drop packet to non-associated "
2721 "STA " MACSTR
"\n", MAC2STR(hdr
->addr1
));
2724 local
->ap
->tx_drop_nonassoc
++;
2732 if (!(sta
->flags
& WLAN_STA_AUTHORIZED
))
2733 ret
= AP_TX_CONTINUE_NOT_AUTHORIZED
;
2735 /* Set tx_rate if using host-based TX rate control */
2736 if (!local
->fw_tx_rate_control
)
2737 local
->ap
->last_tx_rate
= meta
->rate
=
2738 ap_update_sta_tx_rate(sta
, local
->dev
);
2740 if (local
->iw_mode
!= IW_MODE_MASTER
)
2743 if (!(sta
->flags
& WLAN_STA_PS
))
2746 if (meta
->flags
& HOSTAP_TX_FLAGS_ADD_MOREDATA
) {
2747 /* indicate to STA that more frames follow */
2749 __constant_cpu_to_le16(IEEE80211_FCTL_MOREDATA
);
2752 if (meta
->flags
& HOSTAP_TX_FLAGS_BUFFERED_FRAME
) {
2753 /* packet was already buffered and now send due to
2754 * PS poll, so do not rebuffer it */
2758 if (skb_queue_len(&sta
->tx_buf
) >= STA_MAX_TX_BUFFER
) {
2759 PDEBUG(DEBUG_PS
, "%s: No more space in STA (" MACSTR
")'s PS "
2760 "mode buffer\n", local
->dev
->name
, MAC2STR(sta
->addr
));
2761 /* Make sure that TIM is set for the station (it might not be
2762 * after AP wlan hw reset). */
2763 /* FIX: should fix hw reset to restore bits based on STA
2765 hostap_set_tim(local
, sta
->aid
, 1);
2766 sta
->flags
|= WLAN_STA_TIM
;
2771 /* STA in PS mode, buffer frame for later delivery */
2772 set_tim
= skb_queue_empty(&sta
->tx_buf
);
2773 skb_queue_tail(&sta
->tx_buf
, skb
);
2774 /* FIX: could save RX time to skb and expire buffered frames after
2775 * some time if STA does not poll for them */
2778 if (sta
->flags
& WLAN_STA_TIM
)
2779 PDEBUG(DEBUG_PS2
, "Re-setting TIM for aid %d\n",
2781 hostap_set_tim(local
, sta
->aid
, 1);
2782 sta
->flags
|= WLAN_STA_TIM
;
2785 ret
= AP_TX_BUFFERED
;
2789 if (ret
== AP_TX_CONTINUE
||
2790 ret
== AP_TX_CONTINUE_NOT_AUTHORIZED
) {
2792 sta
->tx_bytes
+= skb
->len
;
2793 sta
->last_tx
= jiffies
;
2796 if ((ret
== AP_TX_CONTINUE
||
2797 ret
== AP_TX_CONTINUE_NOT_AUTHORIZED
) &&
2798 sta
->crypt
&& tx
->host_encrypt
) {
2799 tx
->crypt
= sta
->crypt
;
2800 tx
->sta_ptr
= sta
; /* hostap_handle_sta_release() will
2801 * be called to release sta info
2804 atomic_dec(&sta
->users
);
2811 void hostap_handle_sta_release(void *ptr
)
2813 struct sta_info
*sta
= ptr
;
2814 atomic_dec(&sta
->users
);
2818 /* Called only as a tasklet (software IRQ) */
2819 void hostap_handle_sta_tx_exc(local_info_t
*local
, struct sk_buff
*skb
)
2821 struct sta_info
*sta
;
2822 struct ieee80211_hdr_4addr
*hdr
;
2823 struct hostap_skb_tx_data
*meta
;
2825 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
2826 meta
= (struct hostap_skb_tx_data
*) skb
->cb
;
2828 spin_lock(&local
->ap
->sta_table_lock
);
2829 sta
= ap_get_sta(local
->ap
, hdr
->addr1
);
2831 spin_unlock(&local
->ap
->sta_table_lock
);
2832 PDEBUG(DEBUG_AP
, "%s: Could not find STA " MACSTR
" for this "
2833 "TX error (@%lu)\n",
2834 local
->dev
->name
, MAC2STR(hdr
->addr1
), jiffies
);
2838 sta
->tx_since_last_failure
= 0;
2839 sta
->tx_consecutive_exc
++;
2841 if (sta
->tx_consecutive_exc
>= WLAN_RATE_DECREASE_THRESHOLD
&&
2842 sta
->tx_rate_idx
> 0 && meta
->rate
<= sta
->tx_rate
) {
2843 /* use next lower rate */
2845 old
= rate
= sta
->tx_rate_idx
;
2848 if (ap_tx_rate_ok(rate
, sta
, local
)) {
2849 sta
->tx_rate_idx
= rate
;
2853 if (old
!= sta
->tx_rate_idx
) {
2854 switch (sta
->tx_rate_idx
) {
2855 case 0: sta
->tx_rate
= 10; break;
2856 case 1: sta
->tx_rate
= 20; break;
2857 case 2: sta
->tx_rate
= 55; break;
2858 case 3: sta
->tx_rate
= 110; break;
2859 default: sta
->tx_rate
= 0; break;
2861 PDEBUG(DEBUG_AP
, "%s: STA " MACSTR
" TX rate lowered "
2862 "to %d\n", local
->dev
->name
, MAC2STR(sta
->addr
),
2865 sta
->tx_consecutive_exc
= 0;
2867 spin_unlock(&local
->ap
->sta_table_lock
);
2871 static void hostap_update_sta_ps2(local_info_t
*local
, struct sta_info
*sta
,
2872 int pwrmgt
, int type
, int stype
)
2874 if (pwrmgt
&& !(sta
->flags
& WLAN_STA_PS
)) {
2875 sta
->flags
|= WLAN_STA_PS
;
2876 PDEBUG(DEBUG_PS2
, "STA " MACSTR
" changed to use PS "
2877 "mode (type=0x%02X, stype=0x%02X)\n",
2878 MAC2STR(sta
->addr
), type
>> 2, stype
>> 4);
2879 } else if (!pwrmgt
&& (sta
->flags
& WLAN_STA_PS
)) {
2880 sta
->flags
&= ~WLAN_STA_PS
;
2881 PDEBUG(DEBUG_PS2
, "STA " MACSTR
" changed to not use "
2882 "PS mode (type=0x%02X, stype=0x%02X)\n",
2883 MAC2STR(sta
->addr
), type
>> 2, stype
>> 4);
2884 if (type
!= IEEE80211_FTYPE_CTL
||
2885 stype
!= IEEE80211_STYPE_PSPOLL
)
2886 schedule_packet_send(local
, sta
);
2891 /* Called only as a tasklet (software IRQ). Called for each RX frame to update
2892 * STA power saving state. pwrmgt is a flag from 802.11 frame_ctl field. */
2893 int hostap_update_sta_ps(local_info_t
*local
, struct ieee80211_hdr_4addr
*hdr
)
2895 struct sta_info
*sta
;
2898 spin_lock(&local
->ap
->sta_table_lock
);
2899 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
2901 atomic_inc(&sta
->users
);
2902 spin_unlock(&local
->ap
->sta_table_lock
);
2907 fc
= le16_to_cpu(hdr
->frame_ctl
);
2908 hostap_update_sta_ps2(local
, sta
, fc
& IEEE80211_FCTL_PM
,
2909 WLAN_FC_GET_TYPE(fc
), WLAN_FC_GET_STYPE(fc
));
2911 atomic_dec(&sta
->users
);
2916 /* Called only as a tasklet (software IRQ). Called for each RX frame after
2917 * getting RX header and payload from hardware. */
2918 ap_rx_ret
hostap_handle_sta_rx(local_info_t
*local
, struct net_device
*dev
,
2919 struct sk_buff
*skb
,
2920 struct hostap_80211_rx_status
*rx_stats
,
2924 struct sta_info
*sta
;
2925 u16 fc
, type
, stype
;
2926 struct ieee80211_hdr_4addr
*hdr
;
2928 if (local
->ap
== NULL
)
2929 return AP_RX_CONTINUE
;
2931 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
2933 fc
= le16_to_cpu(hdr
->frame_ctl
);
2934 type
= WLAN_FC_GET_TYPE(fc
);
2935 stype
= WLAN_FC_GET_STYPE(fc
);
2937 spin_lock(&local
->ap
->sta_table_lock
);
2938 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
2940 atomic_inc(&sta
->users
);
2941 spin_unlock(&local
->ap
->sta_table_lock
);
2943 if (sta
&& !(sta
->flags
& WLAN_STA_AUTHORIZED
))
2944 ret
= AP_RX_CONTINUE_NOT_AUTHORIZED
;
2946 ret
= AP_RX_CONTINUE
;
2949 if (fc
& IEEE80211_FCTL_TODS
) {
2950 if (!wds
&& (sta
== NULL
|| !(sta
->flags
& WLAN_STA_ASSOC
))) {
2951 if (local
->hostapd
) {
2952 prism2_rx_80211(local
->apdev
, skb
, rx_stats
,
2953 PRISM2_RX_NON_ASSOC
);
2954 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2956 printk(KERN_DEBUG
"%s: dropped received packet"
2957 " from non-associated STA " MACSTR
2958 " (type=0x%02x, subtype=0x%02x)\n",
2959 dev
->name
, MAC2STR(hdr
->addr2
),
2960 type
>> 2, stype
>> 4);
2961 hostap_rx(dev
, skb
, rx_stats
);
2962 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2967 } else if (fc
& IEEE80211_FCTL_FROMDS
) {
2969 /* FromDS frame - not for us; probably
2970 * broadcast/multicast in another BSS - drop */
2971 if (memcmp(hdr
->addr1
, dev
->dev_addr
, ETH_ALEN
) == 0) {
2972 printk(KERN_DEBUG
"Odd.. FromDS packet "
2973 "received with own BSSID\n");
2974 hostap_dump_rx_80211(dev
->name
, skb
, rx_stats
);
2979 } else if (stype
== IEEE80211_STYPE_NULLFUNC
&& sta
== NULL
&&
2980 memcmp(hdr
->addr1
, dev
->dev_addr
, ETH_ALEN
) == 0) {
2982 if (local
->hostapd
) {
2983 prism2_rx_80211(local
->apdev
, skb
, rx_stats
,
2984 PRISM2_RX_NON_ASSOC
);
2985 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2987 /* At least Lucent f/w seems to send data::nullfunc
2988 * frames with no ToDS flag when the current AP returns
2989 * after being unavailable for some time. Speed up
2990 * re-association by informing the station about it not
2991 * being associated. */
2992 printk(KERN_DEBUG
"%s: rejected received nullfunc "
2993 "frame without ToDS from not associated STA "
2995 dev
->name
, MAC2STR(hdr
->addr2
));
2996 hostap_rx(dev
, skb
, rx_stats
);
2997 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
3001 } else if (stype
== IEEE80211_STYPE_NULLFUNC
) {
3002 /* At least Lucent cards seem to send periodic nullfunc
3003 * frames with ToDS. Let these through to update SQ
3004 * stats and PS state. Nullfunc frames do not contain
3005 * any data and they will be dropped below. */
3007 /* If BSSID (Addr3) is foreign, this frame is a normal
3008 * broadcast frame from an IBSS network. Drop it silently.
3009 * If BSSID is own, report the dropping of this frame. */
3010 if (memcmp(hdr
->addr3
, dev
->dev_addr
, ETH_ALEN
) == 0) {
3011 printk(KERN_DEBUG
"%s: dropped received packet from "
3012 MACSTR
" with no ToDS flag (type=0x%02x, "
3013 "subtype=0x%02x)\n", dev
->name
,
3014 MAC2STR(hdr
->addr2
), type
>> 2, stype
>> 4);
3015 hostap_dump_rx_80211(dev
->name
, skb
, rx_stats
);
3022 hostap_update_sta_ps2(local
, sta
, fc
& IEEE80211_FCTL_PM
,
3026 sta
->rx_bytes
+= skb
->len
;
3027 sta
->last_rx
= jiffies
;
3030 if (local
->ap
->nullfunc_ack
&& stype
== IEEE80211_STYPE_NULLFUNC
&&
3031 fc
& IEEE80211_FCTL_TODS
) {
3032 if (local
->hostapd
) {
3033 prism2_rx_80211(local
->apdev
, skb
, rx_stats
,
3034 PRISM2_RX_NULLFUNC_ACK
);
3035 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3037 /* some STA f/w's seem to require control::ACK frame
3038 * for data::nullfunc, but Prism2 f/w 0.8.0 (at least
3039 * from Compaq) does not send this.. Try to generate
3040 * ACK for these frames from the host driver to make
3041 * power saving work with, e.g., Lucent WaveLAN f/w */
3042 hostap_rx(dev
, skb
, rx_stats
);
3043 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
3051 atomic_dec(&sta
->users
);
3057 /* Called only as a tasklet (software IRQ) */
3058 int hostap_handle_sta_crypto(local_info_t
*local
,
3059 struct ieee80211_hdr_4addr
*hdr
,
3060 struct ieee80211_crypt_data
**crypt
,
3063 struct sta_info
*sta
;
3065 spin_lock(&local
->ap
->sta_table_lock
);
3066 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
3068 atomic_inc(&sta
->users
);
3069 spin_unlock(&local
->ap
->sta_table_lock
);
3075 *crypt
= sta
->crypt
;
3077 /* hostap_handle_sta_release() will be called to release STA
3080 atomic_dec(&sta
->users
);
3086 /* Called only as a tasklet (software IRQ) */
3087 int hostap_is_sta_assoc(struct ap_data
*ap
, u8
*sta_addr
)
3089 struct sta_info
*sta
;
3092 spin_lock(&ap
->sta_table_lock
);
3093 sta
= ap_get_sta(ap
, sta_addr
);
3094 if (sta
!= NULL
&& (sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
3096 spin_unlock(&ap
->sta_table_lock
);
3102 /* Called only as a tasklet (software IRQ) */
3103 int hostap_is_sta_authorized(struct ap_data
*ap
, u8
*sta_addr
)
3105 struct sta_info
*sta
;
3108 spin_lock(&ap
->sta_table_lock
);
3109 sta
= ap_get_sta(ap
, sta_addr
);
3110 if (sta
!= NULL
&& (sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&&
3111 ((sta
->flags
& WLAN_STA_AUTHORIZED
) ||
3112 ap
->local
->ieee_802_1x
== 0))
3114 spin_unlock(&ap
->sta_table_lock
);
3120 /* Called only as a tasklet (software IRQ) */
3121 int hostap_add_sta(struct ap_data
*ap
, u8
*sta_addr
)
3123 struct sta_info
*sta
;
3129 spin_lock(&ap
->sta_table_lock
);
3130 sta
= ap_get_sta(ap
, sta_addr
);
3133 spin_unlock(&ap
->sta_table_lock
);
3136 sta
= ap_add_sta(ap
, sta_addr
);
3139 sta
->flags
= WLAN_STA_AUTH
| WLAN_STA_ASSOC
;
3141 memset(sta
->supported_rates
, 0, sizeof(sta
->supported_rates
));
3142 /* No way of knowing which rates are supported since we did not
3143 * get supported rates element from beacon/assoc req. Assume
3144 * that remote end supports all 802.11b rates. */
3145 sta
->supported_rates
[0] = 0x82;
3146 sta
->supported_rates
[1] = 0x84;
3147 sta
->supported_rates
[2] = 0x0b;
3148 sta
->supported_rates
[3] = 0x16;
3149 sta
->tx_supp_rates
= WLAN_RATE_1M
| WLAN_RATE_2M
|
3150 WLAN_RATE_5M5
| WLAN_RATE_11M
;
3152 sta
->tx_max_rate
= sta
->tx_rate_idx
= 3;
3159 /* Called only as a tasklet (software IRQ) */
3160 int hostap_update_rx_stats(struct ap_data
*ap
,
3161 struct ieee80211_hdr_4addr
*hdr
,
3162 struct hostap_80211_rx_status
*rx_stats
)
3164 struct sta_info
*sta
;
3169 spin_lock(&ap
->sta_table_lock
);
3170 sta
= ap_get_sta(ap
, hdr
->addr2
);
3172 sta
->last_rx_silence
= rx_stats
->noise
;
3173 sta
->last_rx_signal
= rx_stats
->signal
;
3174 sta
->last_rx_rate
= rx_stats
->rate
;
3175 sta
->last_rx_updated
= IW_QUAL_ALL_UPDATED
| IW_QUAL_DBM
;
3176 if (rx_stats
->rate
== 10)
3178 else if (rx_stats
->rate
== 20)
3180 else if (rx_stats
->rate
== 55)
3182 else if (rx_stats
->rate
== 110)
3185 spin_unlock(&ap
->sta_table_lock
);
3187 return sta
? 0 : -1;
3191 void hostap_update_rates(local_info_t
*local
)
3193 struct sta_info
*sta
;
3194 struct ap_data
*ap
= local
->ap
;
3199 spin_lock_bh(&ap
->sta_table_lock
);
3200 list_for_each_entry(sta
, &ap
->sta_list
, list
) {
3201 prism2_check_tx_rates(sta
);
3203 spin_unlock_bh(&ap
->sta_table_lock
);
3207 void * ap_crypt_get_ptrs(struct ap_data
*ap
, u8
*addr
, int permanent
,
3208 struct ieee80211_crypt_data
***crypt
)
3210 struct sta_info
*sta
;
3212 spin_lock_bh(&ap
->sta_table_lock
);
3213 sta
= ap_get_sta(ap
, addr
);
3215 atomic_inc(&sta
->users
);
3216 spin_unlock_bh(&ap
->sta_table_lock
);
3218 if (!sta
&& permanent
)
3219 sta
= ap_add_sta(ap
, addr
);
3225 sta
->flags
|= WLAN_STA_PERM
;
3227 *crypt
= &sta
->crypt
;
3233 void hostap_add_wds_links(local_info_t
*local
)
3235 struct ap_data
*ap
= local
->ap
;
3236 struct sta_info
*sta
;
3238 spin_lock_bh(&ap
->sta_table_lock
);
3239 list_for_each_entry(sta
, &ap
->sta_list
, list
) {
3241 hostap_wds_link_oper(local
, sta
->addr
, WDS_ADD
);
3243 spin_unlock_bh(&ap
->sta_table_lock
);
3245 schedule_work(&local
->ap
->wds_oper_queue
);
3249 void hostap_wds_link_oper(local_info_t
*local
, u8
*addr
, wds_oper_type type
)
3251 struct wds_oper_data
*entry
;
3253 entry
= kmalloc(sizeof(*entry
), GFP_ATOMIC
);
3256 memcpy(entry
->addr
, addr
, ETH_ALEN
);
3258 spin_lock_bh(&local
->lock
);
3259 entry
->next
= local
->ap
->wds_oper_entries
;
3260 local
->ap
->wds_oper_entries
= entry
;
3261 spin_unlock_bh(&local
->lock
);
3263 schedule_work(&local
->ap
->wds_oper_queue
);
3267 EXPORT_SYMBOL(hostap_init_data
);
3268 EXPORT_SYMBOL(hostap_init_ap_proc
);
3269 EXPORT_SYMBOL(hostap_free_data
);
3270 EXPORT_SYMBOL(hostap_check_sta_fw_version
);
3271 EXPORT_SYMBOL(hostap_handle_sta_tx_exc
);
3272 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3273 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */