1 // SPDX-License-Identifier: GPL-2.0
3 * Intersil Prism2 driver with Host AP (software access point) support
4 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
6 * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
8 * This file is to be included into hostap.c when S/W AP functionality is
12 * - if unicast Class 2 (assoc,reassoc,disassoc) frame received from
13 * unauthenticated STA, send deauth. frame (8802.11: 5.5)
14 * - if unicast Class 3 (data with to/from DS,deauth,pspoll) frame received
15 * from authenticated, but unassoc STA, send disassoc frame (8802.11: 5.5)
16 * - if unicast Class 3 received from unauthenticated STA, send deauth. frame
20 #include <linux/proc_fs.h>
21 #include <linux/seq_file.h>
22 #include <linux/delay.h>
23 #include <linux/random.h>
24 #include <linux/if_arp.h>
25 #include <linux/slab.h>
26 #include <linux/export.h>
27 #include <linux/moduleparam.h>
28 #include <linux/etherdevice.h>
30 #include "hostap_wlan.h"
32 #include "hostap_ap.h"
34 static int other_ap_policy
[MAX_PARM_DEVICES
] = { AP_OTHER_AP_SKIP_ALL
,
36 module_param_array(other_ap_policy
, int, NULL
, 0444);
37 MODULE_PARM_DESC(other_ap_policy
, "Other AP beacon monitoring policy (0-3)");
39 static int ap_max_inactivity
[MAX_PARM_DEVICES
] = { AP_MAX_INACTIVITY_SEC
,
41 module_param_array(ap_max_inactivity
, int, NULL
, 0444);
42 MODULE_PARM_DESC(ap_max_inactivity
, "AP timeout (in seconds) for station "
45 static int ap_bridge_packets
[MAX_PARM_DEVICES
] = { 1, DEF_INTS
};
46 module_param_array(ap_bridge_packets
, int, NULL
, 0444);
47 MODULE_PARM_DESC(ap_bridge_packets
, "Bridge packets directly between "
50 static int autom_ap_wds
[MAX_PARM_DEVICES
] = { 0, DEF_INTS
};
51 module_param_array(autom_ap_wds
, int, NULL
, 0444);
52 MODULE_PARM_DESC(autom_ap_wds
, "Add WDS connections to other APs "
56 static struct sta_info
* ap_get_sta(struct ap_data
*ap
, u8
*sta
);
57 static void hostap_event_expired_sta(struct net_device
*dev
,
58 struct sta_info
*sta
);
59 static void handle_add_proc_queue(struct work_struct
*work
);
61 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
62 static void handle_wds_oper_queue(struct work_struct
*work
);
63 static void prism2_send_mgmt(struct net_device
*dev
,
64 u16 type_subtype
, char *body
,
65 int body_len
, u8
*addr
, u16 tx_cb_idx
);
66 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
69 #ifndef PRISM2_NO_PROCFS_DEBUG
70 static int ap_debug_proc_show(struct seq_file
*m
, void *v
)
72 struct ap_data
*ap
= m
->private;
74 seq_printf(m
, "BridgedUnicastFrames=%u\n", ap
->bridged_unicast
);
75 seq_printf(m
, "BridgedMulticastFrames=%u\n", ap
->bridged_multicast
);
76 seq_printf(m
, "max_inactivity=%u\n", ap
->max_inactivity
/ HZ
);
77 seq_printf(m
, "bridge_packets=%u\n", ap
->bridge_packets
);
78 seq_printf(m
, "nullfunc_ack=%u\n", ap
->nullfunc_ack
);
79 seq_printf(m
, "autom_ap_wds=%u\n", ap
->autom_ap_wds
);
80 seq_printf(m
, "auth_algs=%u\n", ap
->local
->auth_algs
);
81 seq_printf(m
, "tx_drop_nonassoc=%u\n", ap
->tx_drop_nonassoc
);
85 static int ap_debug_proc_open(struct inode
*inode
, struct file
*file
)
87 return single_open(file
, ap_debug_proc_show
, PDE_DATA(inode
));
90 static const struct file_operations ap_debug_proc_fops
= {
91 .open
= ap_debug_proc_open
,
94 .release
= single_release
,
96 #endif /* PRISM2_NO_PROCFS_DEBUG */
99 static void ap_sta_hash_add(struct ap_data
*ap
, struct sta_info
*sta
)
101 sta
->hnext
= ap
->sta_hash
[STA_HASH(sta
->addr
)];
102 ap
->sta_hash
[STA_HASH(sta
->addr
)] = sta
;
105 static void ap_sta_hash_del(struct ap_data
*ap
, struct sta_info
*sta
)
109 s
= ap
->sta_hash
[STA_HASH(sta
->addr
)];
110 if (s
== NULL
) return;
111 if (ether_addr_equal(s
->addr
, sta
->addr
)) {
112 ap
->sta_hash
[STA_HASH(sta
->addr
)] = s
->hnext
;
116 while (s
->hnext
!= NULL
&& !ether_addr_equal(s
->hnext
->addr
, sta
->addr
))
118 if (s
->hnext
!= NULL
)
119 s
->hnext
= s
->hnext
->hnext
;
121 printk("AP: could not remove STA %pM from hash table\n",
125 static void ap_free_sta(struct ap_data
*ap
, struct sta_info
*sta
)
127 if (sta
->ap
&& sta
->local
)
128 hostap_event_expired_sta(sta
->local
->dev
, sta
);
130 if (ap
->proc
!= NULL
) {
132 sprintf(name
, "%pM", sta
->addr
);
133 remove_proc_entry(name
, ap
->proc
);
137 sta
->crypt
->ops
->deinit(sta
->crypt
->priv
);
142 skb_queue_purge(&sta
->tx_buf
);
145 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
147 ap
->sta_aid
[sta
->aid
- 1] = NULL
;
150 kfree(sta
->u
.sta
.challenge
);
151 del_timer_sync(&sta
->timer
);
152 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
158 static void hostap_set_tim(local_info_t
*local
, int aid
, int set
)
160 if (local
->func
->set_tim
)
161 local
->func
->set_tim(local
->dev
, aid
, set
);
165 static void hostap_event_new_sta(struct net_device
*dev
, struct sta_info
*sta
)
167 union iwreq_data wrqu
;
168 memset(&wrqu
, 0, sizeof(wrqu
));
169 memcpy(wrqu
.addr
.sa_data
, sta
->addr
, ETH_ALEN
);
170 wrqu
.addr
.sa_family
= ARPHRD_ETHER
;
171 wireless_send_event(dev
, IWEVREGISTERED
, &wrqu
, NULL
);
175 static void hostap_event_expired_sta(struct net_device
*dev
,
176 struct sta_info
*sta
)
178 union iwreq_data wrqu
;
179 memset(&wrqu
, 0, sizeof(wrqu
));
180 memcpy(wrqu
.addr
.sa_data
, sta
->addr
, ETH_ALEN
);
181 wrqu
.addr
.sa_family
= ARPHRD_ETHER
;
182 wireless_send_event(dev
, IWEVEXPIRED
, &wrqu
, NULL
);
186 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
188 static void ap_handle_timer(unsigned long data
)
190 struct sta_info
*sta
= (struct sta_info
*) data
;
193 unsigned long next_time
= 0;
196 if (sta
== NULL
|| sta
->local
== NULL
|| sta
->local
->ap
== NULL
) {
197 PDEBUG(DEBUG_AP
, "ap_handle_timer() called with NULL data\n");
203 was_assoc
= sta
->flags
& WLAN_STA_ASSOC
;
205 if (atomic_read(&sta
->users
) != 0)
206 next_time
= jiffies
+ HZ
;
207 else if ((sta
->flags
& WLAN_STA_PERM
) && !(sta
->flags
& WLAN_STA_AUTH
))
208 next_time
= jiffies
+ ap
->max_inactivity
;
210 if (time_before(jiffies
, sta
->last_rx
+ ap
->max_inactivity
)) {
211 /* station activity detected; reset timeout state */
212 sta
->timeout_next
= STA_NULLFUNC
;
213 next_time
= sta
->last_rx
+ ap
->max_inactivity
;
214 } else if (sta
->timeout_next
== STA_DISASSOC
&&
215 !(sta
->flags
& WLAN_STA_PENDING_POLL
)) {
216 /* STA ACKed data nullfunc frame poll */
217 sta
->timeout_next
= STA_NULLFUNC
;
218 next_time
= jiffies
+ ap
->max_inactivity
;
222 sta
->timer
.expires
= next_time
;
223 add_timer(&sta
->timer
);
228 sta
->timeout_next
= STA_DEAUTH
;
230 if (sta
->timeout_next
== STA_DEAUTH
&& !(sta
->flags
& WLAN_STA_PERM
)) {
231 spin_lock(&ap
->sta_table_lock
);
232 ap_sta_hash_del(ap
, sta
);
233 list_del(&sta
->list
);
234 spin_unlock(&ap
->sta_table_lock
);
235 sta
->flags
&= ~(WLAN_STA_AUTH
| WLAN_STA_ASSOC
);
236 } else if (sta
->timeout_next
== STA_DISASSOC
)
237 sta
->flags
&= ~WLAN_STA_ASSOC
;
239 if (was_assoc
&& !(sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
240 hostap_event_expired_sta(local
->dev
, sta
);
242 if (sta
->timeout_next
== STA_DEAUTH
&& sta
->aid
> 0 &&
243 !skb_queue_empty(&sta
->tx_buf
)) {
244 hostap_set_tim(local
, sta
->aid
, 0);
245 sta
->flags
&= ~WLAN_STA_TIM
;
249 if (ap
->autom_ap_wds
) {
250 PDEBUG(DEBUG_AP
, "%s: removing automatic WDS "
251 "connection to AP %pM\n",
252 local
->dev
->name
, sta
->addr
);
253 hostap_wds_link_oper(local
, sta
->addr
, WDS_DEL
);
255 } else if (sta
->timeout_next
== STA_NULLFUNC
) {
256 /* send data frame to poll STA and check whether this frame
258 /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but
259 * it is apparently not retried so TX Exc events are not
261 sta
->flags
|= WLAN_STA_PENDING_POLL
;
262 prism2_send_mgmt(local
->dev
, IEEE80211_FTYPE_DATA
|
263 IEEE80211_STYPE_DATA
, NULL
, 0,
264 sta
->addr
, ap
->tx_callback_poll
);
266 int deauth
= sta
->timeout_next
== STA_DEAUTH
;
268 PDEBUG(DEBUG_AP
, "%s: sending %s info to STA %pM"
269 "(last=%lu, jiffies=%lu)\n",
271 deauth
? "deauthentication" : "disassociation",
272 sta
->addr
, sta
->last_rx
, jiffies
);
274 resp
= cpu_to_le16(deauth
? WLAN_REASON_PREV_AUTH_NOT_VALID
:
275 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
);
276 prism2_send_mgmt(local
->dev
, IEEE80211_FTYPE_MGMT
|
277 (deauth
? IEEE80211_STYPE_DEAUTH
:
278 IEEE80211_STYPE_DISASSOC
),
279 (char *) &resp
, 2, sta
->addr
, 0);
282 if (sta
->timeout_next
== STA_DEAUTH
) {
283 if (sta
->flags
& WLAN_STA_PERM
) {
284 PDEBUG(DEBUG_AP
, "%s: STA %pM"
285 " would have been removed, "
286 "but it has 'perm' flag\n",
287 local
->dev
->name
, sta
->addr
);
289 ap_free_sta(ap
, sta
);
293 if (sta
->timeout_next
== STA_NULLFUNC
) {
294 sta
->timeout_next
= STA_DISASSOC
;
295 sta
->timer
.expires
= jiffies
+ AP_DISASSOC_DELAY
;
297 sta
->timeout_next
= STA_DEAUTH
;
298 sta
->timer
.expires
= jiffies
+ AP_DEAUTH_DELAY
;
301 add_timer(&sta
->timer
);
305 void hostap_deauth_all_stas(struct net_device
*dev
, struct ap_data
*ap
,
312 PDEBUG(DEBUG_AP
, "%s: Deauthenticate all stations\n", dev
->name
);
313 eth_broadcast_addr(addr
);
315 resp
= cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID
);
317 /* deauth message sent; try to resend it few times; the message is
318 * broadcast, so it may be delayed until next DTIM; there is not much
319 * else we can do at this point since the driver is going to be shut
321 for (i
= 0; i
< 5; i
++) {
322 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
|
323 IEEE80211_STYPE_DEAUTH
,
324 (char *) &resp
, 2, addr
, 0);
326 if (!resend
|| ap
->num_sta
<= 0)
334 static int ap_control_proc_show(struct seq_file
*m
, void *v
)
336 struct ap_data
*ap
= m
->private;
338 struct mac_entry
*entry
;
340 if (v
== SEQ_START_TOKEN
) {
341 switch (ap
->mac_restrictions
.policy
) {
342 case MAC_POLICY_OPEN
:
345 case MAC_POLICY_ALLOW
:
346 policy_txt
= "allow";
348 case MAC_POLICY_DENY
:
352 policy_txt
= "unknown";
355 seq_printf(m
, "MAC policy: %s\n", policy_txt
);
356 seq_printf(m
, "MAC entries: %u\n", ap
->mac_restrictions
.entries
);
357 seq_puts(m
, "MAC list:\n");
362 seq_printf(m
, "%pM\n", entry
->addr
);
366 static void *ap_control_proc_start(struct seq_file
*m
, loff_t
*_pos
)
368 struct ap_data
*ap
= m
->private;
369 spin_lock_bh(&ap
->mac_restrictions
.lock
);
370 return seq_list_start_head(&ap
->mac_restrictions
.mac_list
, *_pos
);
373 static void *ap_control_proc_next(struct seq_file
*m
, void *v
, loff_t
*_pos
)
375 struct ap_data
*ap
= m
->private;
376 return seq_list_next(v
, &ap
->mac_restrictions
.mac_list
, _pos
);
379 static void ap_control_proc_stop(struct seq_file
*m
, void *v
)
381 struct ap_data
*ap
= m
->private;
382 spin_unlock_bh(&ap
->mac_restrictions
.lock
);
385 static const struct seq_operations ap_control_proc_seqops
= {
386 .start
= ap_control_proc_start
,
387 .next
= ap_control_proc_next
,
388 .stop
= ap_control_proc_stop
,
389 .show
= ap_control_proc_show
,
392 static int ap_control_proc_open(struct inode
*inode
, struct file
*file
)
394 int ret
= seq_open(file
, &ap_control_proc_seqops
);
396 struct seq_file
*m
= file
->private_data
;
397 m
->private = PDE_DATA(inode
);
402 static const struct file_operations ap_control_proc_fops
= {
403 .open
= ap_control_proc_open
,
406 .release
= seq_release
,
410 int ap_control_add_mac(struct mac_restrictions
*mac_restrictions
, u8
*mac
)
412 struct mac_entry
*entry
;
414 entry
= kmalloc(sizeof(struct mac_entry
), GFP_KERNEL
);
418 memcpy(entry
->addr
, mac
, ETH_ALEN
);
420 spin_lock_bh(&mac_restrictions
->lock
);
421 list_add_tail(&entry
->list
, &mac_restrictions
->mac_list
);
422 mac_restrictions
->entries
++;
423 spin_unlock_bh(&mac_restrictions
->lock
);
429 int ap_control_del_mac(struct mac_restrictions
*mac_restrictions
, u8
*mac
)
431 struct list_head
*ptr
;
432 struct mac_entry
*entry
;
434 spin_lock_bh(&mac_restrictions
->lock
);
435 for (ptr
= mac_restrictions
->mac_list
.next
;
436 ptr
!= &mac_restrictions
->mac_list
; ptr
= ptr
->next
) {
437 entry
= list_entry(ptr
, struct mac_entry
, list
);
439 if (ether_addr_equal(entry
->addr
, mac
)) {
442 mac_restrictions
->entries
--;
443 spin_unlock_bh(&mac_restrictions
->lock
);
447 spin_unlock_bh(&mac_restrictions
->lock
);
452 static int ap_control_mac_deny(struct mac_restrictions
*mac_restrictions
,
455 struct mac_entry
*entry
;
458 if (mac_restrictions
->policy
== MAC_POLICY_OPEN
)
461 spin_lock_bh(&mac_restrictions
->lock
);
462 list_for_each_entry(entry
, &mac_restrictions
->mac_list
, list
) {
463 if (ether_addr_equal(entry
->addr
, mac
)) {
468 spin_unlock_bh(&mac_restrictions
->lock
);
470 if (mac_restrictions
->policy
== MAC_POLICY_ALLOW
)
477 void ap_control_flush_macs(struct mac_restrictions
*mac_restrictions
)
479 struct list_head
*ptr
, *n
;
480 struct mac_entry
*entry
;
482 if (mac_restrictions
->entries
== 0)
485 spin_lock_bh(&mac_restrictions
->lock
);
486 for (ptr
= mac_restrictions
->mac_list
.next
, n
= ptr
->next
;
487 ptr
!= &mac_restrictions
->mac_list
;
488 ptr
= n
, n
= ptr
->next
) {
489 entry
= list_entry(ptr
, struct mac_entry
, list
);
493 mac_restrictions
->entries
= 0;
494 spin_unlock_bh(&mac_restrictions
->lock
);
498 int ap_control_kick_mac(struct ap_data
*ap
, struct net_device
*dev
, u8
*mac
)
500 struct sta_info
*sta
;
503 spin_lock_bh(&ap
->sta_table_lock
);
504 sta
= ap_get_sta(ap
, mac
);
506 ap_sta_hash_del(ap
, sta
);
507 list_del(&sta
->list
);
509 spin_unlock_bh(&ap
->sta_table_lock
);
514 resp
= cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID
);
515 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
| IEEE80211_STYPE_DEAUTH
,
516 (char *) &resp
, 2, sta
->addr
, 0);
518 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
519 hostap_event_expired_sta(dev
, sta
);
521 ap_free_sta(ap
, sta
);
526 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
529 void ap_control_kickall(struct ap_data
*ap
)
531 struct list_head
*ptr
, *n
;
532 struct sta_info
*sta
;
534 spin_lock_bh(&ap
->sta_table_lock
);
535 for (ptr
= ap
->sta_list
.next
, n
= ptr
->next
; ptr
!= &ap
->sta_list
;
536 ptr
= n
, n
= ptr
->next
) {
537 sta
= list_entry(ptr
, struct sta_info
, list
);
538 ap_sta_hash_del(ap
, sta
);
539 list_del(&sta
->list
);
540 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&& sta
->local
)
541 hostap_event_expired_sta(sta
->local
->dev
, sta
);
542 ap_free_sta(ap
, sta
);
544 spin_unlock_bh(&ap
->sta_table_lock
);
548 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
550 static int prism2_ap_proc_show(struct seq_file
*m
, void *v
)
552 struct sta_info
*sta
= v
;
555 if (v
== SEQ_START_TOKEN
) {
556 seq_printf(m
, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n");
563 seq_printf(m
, "%pM %d %d %d %d '",
565 sta
->u
.ap
.channel
, sta
->last_rx_signal
,
566 sta
->last_rx_silence
, sta
->last_rx_rate
);
568 for (i
= 0; i
< sta
->u
.ap
.ssid_len
; i
++) {
569 if (sta
->u
.ap
.ssid
[i
] >= 32 && sta
->u
.ap
.ssid
[i
] < 127)
570 seq_putc(m
, sta
->u
.ap
.ssid
[i
]);
572 seq_printf(m
, "<%02x>", sta
->u
.ap
.ssid
[i
]);
576 if (sta
->capability
& WLAN_CAPABILITY_ESS
)
577 seq_puts(m
, " [ESS]");
578 if (sta
->capability
& WLAN_CAPABILITY_IBSS
)
579 seq_puts(m
, " [IBSS]");
580 if (sta
->capability
& WLAN_CAPABILITY_PRIVACY
)
581 seq_puts(m
, " [WEP]");
586 static void *prism2_ap_proc_start(struct seq_file
*m
, loff_t
*_pos
)
588 struct ap_data
*ap
= m
->private;
589 spin_lock_bh(&ap
->sta_table_lock
);
590 return seq_list_start_head(&ap
->sta_list
, *_pos
);
593 static void *prism2_ap_proc_next(struct seq_file
*m
, void *v
, loff_t
*_pos
)
595 struct ap_data
*ap
= m
->private;
596 return seq_list_next(v
, &ap
->sta_list
, _pos
);
599 static void prism2_ap_proc_stop(struct seq_file
*m
, void *v
)
601 struct ap_data
*ap
= m
->private;
602 spin_unlock_bh(&ap
->sta_table_lock
);
605 static const struct seq_operations prism2_ap_proc_seqops
= {
606 .start
= prism2_ap_proc_start
,
607 .next
= prism2_ap_proc_next
,
608 .stop
= prism2_ap_proc_stop
,
609 .show
= prism2_ap_proc_show
,
612 static int prism2_ap_proc_open(struct inode
*inode
, struct file
*file
)
614 int ret
= seq_open(file
, &prism2_ap_proc_seqops
);
616 struct seq_file
*m
= file
->private_data
;
617 m
->private = PDE_DATA(inode
);
622 static const struct file_operations prism2_ap_proc_fops
= {
623 .open
= prism2_ap_proc_open
,
626 .release
= seq_release
,
628 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
631 void hostap_check_sta_fw_version(struct ap_data
*ap
, int sta_fw_ver
)
636 if (sta_fw_ver
== PRISM2_FW_VER(0,8,0)) {
637 PDEBUG(DEBUG_AP
, "Using data::nullfunc ACK workaround - "
638 "firmware upgrade recommended\n");
639 ap
->nullfunc_ack
= 1;
641 ap
->nullfunc_ack
= 0;
643 if (sta_fw_ver
== PRISM2_FW_VER(1,4,2)) {
644 printk(KERN_WARNING
"%s: Warning: secondary station firmware "
645 "version 1.4.2 does not seem to work in Host AP mode\n",
646 ap
->local
->dev
->name
);
651 /* Called only as a tasklet (software IRQ) */
652 static void hostap_ap_tx_cb(struct sk_buff
*skb
, int ok
, void *data
)
654 struct ap_data
*ap
= data
;
655 struct ieee80211_hdr
*hdr
;
657 if (!ap
->local
->hostapd
|| !ap
->local
->apdev
) {
662 /* Pass the TX callback frame to the hostapd; use 802.11 header version
663 * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */
665 hdr
= (struct ieee80211_hdr
*) skb
->data
;
666 hdr
->frame_control
&= cpu_to_le16(~IEEE80211_FCTL_VERS
);
667 hdr
->frame_control
|= cpu_to_le16(ok
? BIT(1) : BIT(0));
669 skb
->dev
= ap
->local
->apdev
;
670 skb_pull(skb
, hostap_80211_get_hdrlen(hdr
->frame_control
));
671 skb
->pkt_type
= PACKET_OTHERHOST
;
672 skb
->protocol
= cpu_to_be16(ETH_P_802_2
);
673 memset(skb
->cb
, 0, sizeof(skb
->cb
));
678 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
679 /* Called only as a tasklet (software IRQ) */
680 static void hostap_ap_tx_cb_auth(struct sk_buff
*skb
, int ok
, void *data
)
682 struct ap_data
*ap
= data
;
683 struct net_device
*dev
= ap
->local
->dev
;
684 struct ieee80211_hdr
*hdr
;
685 u16 auth_alg
, auth_transaction
, status
;
687 struct sta_info
*sta
= NULL
;
690 if (ap
->local
->hostapd
) {
695 hdr
= (struct ieee80211_hdr
*) skb
->data
;
696 if (!ieee80211_is_auth(hdr
->frame_control
) ||
697 skb
->len
< IEEE80211_MGMT_HDR_LEN
+ 6) {
698 printk(KERN_DEBUG
"%s: hostap_ap_tx_cb_auth received invalid "
699 "frame\n", dev
->name
);
704 pos
= (__le16
*) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
705 auth_alg
= le16_to_cpu(*pos
++);
706 auth_transaction
= le16_to_cpu(*pos
++);
707 status
= le16_to_cpu(*pos
++);
710 txt
= "frame was not ACKed";
714 spin_lock(&ap
->sta_table_lock
);
715 sta
= ap_get_sta(ap
, hdr
->addr1
);
717 atomic_inc(&sta
->users
);
718 spin_unlock(&ap
->sta_table_lock
);
721 txt
= "STA not found";
725 if (status
== WLAN_STATUS_SUCCESS
&&
726 ((auth_alg
== WLAN_AUTH_OPEN
&& auth_transaction
== 2) ||
727 (auth_alg
== WLAN_AUTH_SHARED_KEY
&& auth_transaction
== 4))) {
728 txt
= "STA authenticated";
729 sta
->flags
|= WLAN_STA_AUTH
;
730 sta
->last_auth
= jiffies
;
731 } else if (status
!= WLAN_STATUS_SUCCESS
)
732 txt
= "authentication failed";
736 atomic_dec(&sta
->users
);
738 PDEBUG(DEBUG_AP
, "%s: %pM auth_cb - alg=%d "
739 "trans#=%d status=%d - %s\n",
740 dev
->name
, hdr
->addr1
,
741 auth_alg
, auth_transaction
, status
, txt
);
747 /* Called only as a tasklet (software IRQ) */
748 static void hostap_ap_tx_cb_assoc(struct sk_buff
*skb
, int ok
, void *data
)
750 struct ap_data
*ap
= data
;
751 struct net_device
*dev
= ap
->local
->dev
;
752 struct ieee80211_hdr
*hdr
;
755 struct sta_info
*sta
= NULL
;
758 if (ap
->local
->hostapd
) {
763 hdr
= (struct ieee80211_hdr
*) skb
->data
;
764 if ((!ieee80211_is_assoc_resp(hdr
->frame_control
) &&
765 !ieee80211_is_reassoc_resp(hdr
->frame_control
)) ||
766 skb
->len
< IEEE80211_MGMT_HDR_LEN
+ 4) {
767 printk(KERN_DEBUG
"%s: hostap_ap_tx_cb_assoc received invalid "
768 "frame\n", dev
->name
);
774 txt
= "frame was not ACKed";
778 spin_lock(&ap
->sta_table_lock
);
779 sta
= ap_get_sta(ap
, hdr
->addr1
);
781 atomic_inc(&sta
->users
);
782 spin_unlock(&ap
->sta_table_lock
);
785 txt
= "STA not found";
789 pos
= (__le16
*) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
791 status
= le16_to_cpu(*pos
++);
792 if (status
== WLAN_STATUS_SUCCESS
) {
793 if (!(sta
->flags
& WLAN_STA_ASSOC
))
794 hostap_event_new_sta(dev
, sta
);
795 txt
= "STA associated";
796 sta
->flags
|= WLAN_STA_ASSOC
;
797 sta
->last_assoc
= jiffies
;
799 txt
= "association failed";
803 atomic_dec(&sta
->users
);
805 PDEBUG(DEBUG_AP
, "%s: %pM assoc_cb - %s\n",
806 dev
->name
, hdr
->addr1
, txt
);
811 /* Called only as a tasklet (software IRQ); TX callback for poll frames used
812 * in verifying whether the STA is still present. */
813 static void hostap_ap_tx_cb_poll(struct sk_buff
*skb
, int ok
, void *data
)
815 struct ap_data
*ap
= data
;
816 struct ieee80211_hdr
*hdr
;
817 struct sta_info
*sta
;
821 hdr
= (struct ieee80211_hdr
*) skb
->data
;
823 spin_lock(&ap
->sta_table_lock
);
824 sta
= ap_get_sta(ap
, hdr
->addr1
);
826 sta
->flags
&= ~WLAN_STA_PENDING_POLL
;
827 spin_unlock(&ap
->sta_table_lock
);
830 "%s: STA %pM did not ACK activity poll frame\n",
831 ap
->local
->dev
->name
, hdr
->addr1
);
837 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
840 void hostap_init_data(local_info_t
*local
)
842 struct ap_data
*ap
= local
->ap
;
845 printk(KERN_WARNING
"hostap_init_data: ap == NULL\n");
848 memset(ap
, 0, sizeof(struct ap_data
));
851 ap
->ap_policy
= GET_INT_PARM(other_ap_policy
, local
->card_idx
);
852 ap
->bridge_packets
= GET_INT_PARM(ap_bridge_packets
, local
->card_idx
);
854 GET_INT_PARM(ap_max_inactivity
, local
->card_idx
) * HZ
;
855 ap
->autom_ap_wds
= GET_INT_PARM(autom_ap_wds
, local
->card_idx
);
857 spin_lock_init(&ap
->sta_table_lock
);
858 INIT_LIST_HEAD(&ap
->sta_list
);
860 /* Initialize task queue structure for AP management */
861 INIT_WORK(&local
->ap
->add_sta_proc_queue
, handle_add_proc_queue
);
863 ap
->tx_callback_idx
=
864 hostap_tx_callback_register(local
, hostap_ap_tx_cb
, ap
);
865 if (ap
->tx_callback_idx
== 0)
866 printk(KERN_WARNING
"%s: failed to register TX callback for "
867 "AP\n", local
->dev
->name
);
868 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
869 INIT_WORK(&local
->ap
->wds_oper_queue
, handle_wds_oper_queue
);
871 ap
->tx_callback_auth
=
872 hostap_tx_callback_register(local
, hostap_ap_tx_cb_auth
, ap
);
873 ap
->tx_callback_assoc
=
874 hostap_tx_callback_register(local
, hostap_ap_tx_cb_assoc
, ap
);
875 ap
->tx_callback_poll
=
876 hostap_tx_callback_register(local
, hostap_ap_tx_cb_poll
, ap
);
877 if (ap
->tx_callback_auth
== 0 || ap
->tx_callback_assoc
== 0 ||
878 ap
->tx_callback_poll
== 0)
879 printk(KERN_WARNING
"%s: failed to register TX callback for "
880 "AP\n", local
->dev
->name
);
882 spin_lock_init(&ap
->mac_restrictions
.lock
);
883 INIT_LIST_HEAD(&ap
->mac_restrictions
.mac_list
);
884 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
890 void hostap_init_ap_proc(local_info_t
*local
)
892 struct ap_data
*ap
= local
->ap
;
894 ap
->proc
= local
->proc
;
895 if (ap
->proc
== NULL
)
898 #ifndef PRISM2_NO_PROCFS_DEBUG
899 proc_create_data("ap_debug", 0, ap
->proc
, &ap_debug_proc_fops
, ap
);
900 #endif /* PRISM2_NO_PROCFS_DEBUG */
902 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
903 proc_create_data("ap_control", 0, ap
->proc
, &ap_control_proc_fops
, ap
);
904 proc_create_data("ap", 0, ap
->proc
, &prism2_ap_proc_fops
, ap
);
905 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
910 void hostap_free_data(struct ap_data
*ap
)
912 struct sta_info
*n
, *sta
;
914 if (ap
== NULL
|| !ap
->initialized
) {
915 printk(KERN_DEBUG
"hostap_free_data: ap has not yet been "
916 "initialized - skip resource freeing\n");
920 flush_work(&ap
->add_sta_proc_queue
);
922 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
923 flush_work(&ap
->wds_oper_queue
);
925 ap
->crypt
->deinit(ap
->crypt_priv
);
926 ap
->crypt
= ap
->crypt_priv
= NULL
;
927 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
929 list_for_each_entry_safe(sta
, n
, &ap
->sta_list
, list
) {
930 ap_sta_hash_del(ap
, sta
);
931 list_del(&sta
->list
);
932 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&& sta
->local
)
933 hostap_event_expired_sta(sta
->local
->dev
, sta
);
934 ap_free_sta(ap
, sta
);
937 #ifndef PRISM2_NO_PROCFS_DEBUG
938 if (ap
->proc
!= NULL
) {
939 remove_proc_entry("ap_debug", ap
->proc
);
941 #endif /* PRISM2_NO_PROCFS_DEBUG */
943 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
944 if (ap
->proc
!= NULL
) {
945 remove_proc_entry("ap", ap
->proc
);
946 remove_proc_entry("ap_control", ap
->proc
);
948 ap_control_flush_macs(&ap
->mac_restrictions
);
949 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
955 /* caller should have mutex for AP STA list handling */
956 static struct sta_info
* ap_get_sta(struct ap_data
*ap
, u8
*sta
)
960 s
= ap
->sta_hash
[STA_HASH(sta
)];
961 while (s
!= NULL
&& !ether_addr_equal(s
->addr
, sta
))
967 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
969 /* Called from timer handler and from scheduled AP queue handlers */
970 static void prism2_send_mgmt(struct net_device
*dev
,
971 u16 type_subtype
, char *body
,
972 int body_len
, u8
*addr
, u16 tx_cb_idx
)
974 struct hostap_interface
*iface
;
976 struct ieee80211_hdr
*hdr
;
979 struct hostap_skb_tx_data
*meta
;
982 iface
= netdev_priv(dev
);
983 local
= iface
->local
;
984 dev
= local
->dev
; /* always use master radio device */
985 iface
= netdev_priv(dev
);
987 if (!(dev
->flags
& IFF_UP
)) {
988 PDEBUG(DEBUG_AP
, "%s: prism2_send_mgmt - device is not UP - "
989 "cannot send frame\n", dev
->name
);
993 skb
= dev_alloc_skb(sizeof(*hdr
) + body_len
);
995 PDEBUG(DEBUG_AP
, "%s: prism2_send_mgmt failed to allocate "
1001 hdrlen
= hostap_80211_get_hdrlen(cpu_to_le16(type_subtype
));
1002 hdr
= skb_put_zero(skb
, hdrlen
);
1004 skb_put_data(skb
, body
, body_len
);
1006 /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11
1007 * tx_control instead of using local->tx_control */
1010 memcpy(hdr
->addr1
, addr
, ETH_ALEN
); /* DA / RA */
1011 if (ieee80211_is_data(hdr
->frame_control
)) {
1012 fc
|= IEEE80211_FCTL_FROMDS
;
1013 memcpy(hdr
->addr2
, dev
->dev_addr
, ETH_ALEN
); /* BSSID */
1014 memcpy(hdr
->addr3
, dev
->dev_addr
, ETH_ALEN
); /* SA */
1015 } else if (ieee80211_is_ctl(hdr
->frame_control
)) {
1016 /* control:ACK does not have addr2 or addr3 */
1017 eth_zero_addr(hdr
->addr2
);
1018 eth_zero_addr(hdr
->addr3
);
1020 memcpy(hdr
->addr2
, dev
->dev_addr
, ETH_ALEN
); /* SA */
1021 memcpy(hdr
->addr3
, dev
->dev_addr
, ETH_ALEN
); /* BSSID */
1024 hdr
->frame_control
= cpu_to_le16(fc
);
1026 meta
= (struct hostap_skb_tx_data
*) skb
->cb
;
1027 memset(meta
, 0, sizeof(*meta
));
1028 meta
->magic
= HOSTAP_SKB_TX_DATA_MAGIC
;
1029 meta
->iface
= iface
;
1030 meta
->tx_cb_idx
= tx_cb_idx
;
1033 skb_reset_mac_header(skb
);
1034 skb_reset_network_header(skb
);
1035 dev_queue_xmit(skb
);
1037 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1040 static int prism2_sta_proc_show(struct seq_file
*m
, void *v
)
1042 struct sta_info
*sta
= m
->private;
1045 /* FIX: possible race condition.. the STA data could have just expired,
1046 * but proc entry was still here so that the read could have started;
1047 * some locking should be done here.. */
1050 "%s=%pM\nusers=%d\naid=%d\n"
1051 "flags=0x%04x%s%s%s%s%s%s%s\n"
1052 "capability=0x%02x\nlisten_interval=%d\nsupported_rates=",
1053 sta
->ap
? "AP" : "STA",
1054 sta
->addr
, atomic_read(&sta
->users
), sta
->aid
,
1056 sta
->flags
& WLAN_STA_AUTH
? " AUTH" : "",
1057 sta
->flags
& WLAN_STA_ASSOC
? " ASSOC" : "",
1058 sta
->flags
& WLAN_STA_PS
? " PS" : "",
1059 sta
->flags
& WLAN_STA_TIM
? " TIM" : "",
1060 sta
->flags
& WLAN_STA_PERM
? " PERM" : "",
1061 sta
->flags
& WLAN_STA_AUTHORIZED
? " AUTHORIZED" : "",
1062 sta
->flags
& WLAN_STA_PENDING_POLL
? " POLL" : "",
1063 sta
->capability
, sta
->listen_interval
);
1064 /* supported_rates: 500 kbit/s units with msb ignored */
1065 for (i
= 0; i
< sizeof(sta
->supported_rates
); i
++)
1066 if (sta
->supported_rates
[i
] != 0)
1067 seq_printf(m
, "%d%sMbps ",
1068 (sta
->supported_rates
[i
] & 0x7f) / 2,
1069 sta
->supported_rates
[i
] & 1 ? ".5" : "");
1071 "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n"
1072 "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n"
1074 "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n"
1075 "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n"
1076 "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n"
1078 "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n",
1079 jiffies
, sta
->last_auth
, sta
->last_assoc
, sta
->last_rx
,
1081 sta
->rx_packets
, sta
->tx_packets
, sta
->rx_bytes
,
1082 sta
->tx_bytes
, skb_queue_len(&sta
->tx_buf
),
1083 sta
->last_rx_silence
,
1084 sta
->last_rx_signal
, sta
->last_rx_rate
/ 10,
1085 sta
->last_rx_rate
% 10 ? ".5" : "",
1086 sta
->tx_rate
, sta
->tx_count
[0], sta
->tx_count
[1],
1087 sta
->tx_count
[2], sta
->tx_count
[3], sta
->rx_count
[0],
1088 sta
->rx_count
[1], sta
->rx_count
[2], sta
->rx_count
[3]);
1089 if (sta
->crypt
&& sta
->crypt
->ops
&& sta
->crypt
->ops
->print_stats
)
1090 sta
->crypt
->ops
->print_stats(m
, sta
->crypt
->priv
);
1091 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1093 if (sta
->u
.ap
.channel
>= 0)
1094 seq_printf(m
, "channel=%d\n", sta
->u
.ap
.channel
);
1095 seq_puts(m
, "ssid=");
1096 for (i
= 0; i
< sta
->u
.ap
.ssid_len
; i
++) {
1097 if (sta
->u
.ap
.ssid
[i
] >= 32 && sta
->u
.ap
.ssid
[i
] < 127)
1098 seq_putc(m
, sta
->u
.ap
.ssid
[i
]);
1100 seq_printf(m
, "<%02x>", sta
->u
.ap
.ssid
[i
]);
1104 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1109 static int prism2_sta_proc_open(struct inode
*inode
, struct file
*file
)
1111 return single_open(file
, prism2_sta_proc_show
, PDE_DATA(inode
));
1114 static const struct file_operations prism2_sta_proc_fops
= {
1115 .open
= prism2_sta_proc_open
,
1117 .llseek
= seq_lseek
,
1118 .release
= single_release
,
1121 static void handle_add_proc_queue(struct work_struct
*work
)
1123 struct ap_data
*ap
= container_of(work
, struct ap_data
,
1124 add_sta_proc_queue
);
1125 struct sta_info
*sta
;
1127 struct add_sta_proc_data
*entry
, *prev
;
1129 entry
= ap
->add_sta_proc_entries
;
1130 ap
->add_sta_proc_entries
= NULL
;
1133 spin_lock_bh(&ap
->sta_table_lock
);
1134 sta
= ap_get_sta(ap
, entry
->addr
);
1136 atomic_inc(&sta
->users
);
1137 spin_unlock_bh(&ap
->sta_table_lock
);
1140 sprintf(name
, "%pM", sta
->addr
);
1141 sta
->proc
= proc_create_data(
1143 &prism2_sta_proc_fops
, sta
);
1145 atomic_dec(&sta
->users
);
1149 entry
= entry
->next
;
1155 static struct sta_info
* ap_add_sta(struct ap_data
*ap
, u8
*addr
)
1157 struct sta_info
*sta
;
1159 sta
= kzalloc(sizeof(struct sta_info
), GFP_ATOMIC
);
1161 PDEBUG(DEBUG_AP
, "AP: kmalloc failed\n");
1165 /* initialize STA info data */
1166 sta
->local
= ap
->local
;
1167 skb_queue_head_init(&sta
->tx_buf
);
1168 memcpy(sta
->addr
, addr
, ETH_ALEN
);
1170 atomic_inc(&sta
->users
);
1171 spin_lock_bh(&ap
->sta_table_lock
);
1172 list_add(&sta
->list
, &ap
->sta_list
);
1174 ap_sta_hash_add(ap
, sta
);
1175 spin_unlock_bh(&ap
->sta_table_lock
);
1178 struct add_sta_proc_data
*entry
;
1179 /* schedule a non-interrupt context process to add a procfs
1180 * entry for the STA since procfs code use GFP_KERNEL */
1181 entry
= kmalloc(sizeof(*entry
), GFP_ATOMIC
);
1183 memcpy(entry
->addr
, sta
->addr
, ETH_ALEN
);
1184 entry
->next
= ap
->add_sta_proc_entries
;
1185 ap
->add_sta_proc_entries
= entry
;
1186 schedule_work(&ap
->add_sta_proc_queue
);
1188 printk(KERN_DEBUG
"Failed to add STA proc data\n");
1191 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1192 init_timer(&sta
->timer
);
1193 sta
->timer
.expires
= jiffies
+ ap
->max_inactivity
;
1194 sta
->timer
.data
= (unsigned long) sta
;
1195 sta
->timer
.function
= ap_handle_timer
;
1196 if (!ap
->local
->hostapd
)
1197 add_timer(&sta
->timer
);
1198 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1204 static int ap_tx_rate_ok(int rateidx
, struct sta_info
*sta
,
1205 local_info_t
*local
)
1207 if (rateidx
> sta
->tx_max_rate
||
1208 !(sta
->tx_supp_rates
& (1 << rateidx
)))
1211 if (local
->tx_rate_control
!= 0 &&
1212 !(local
->tx_rate_control
& (1 << rateidx
)))
1219 static void prism2_check_tx_rates(struct sta_info
*sta
)
1223 sta
->tx_supp_rates
= 0;
1224 for (i
= 0; i
< sizeof(sta
->supported_rates
); i
++) {
1225 if ((sta
->supported_rates
[i
] & 0x7f) == 2)
1226 sta
->tx_supp_rates
|= WLAN_RATE_1M
;
1227 if ((sta
->supported_rates
[i
] & 0x7f) == 4)
1228 sta
->tx_supp_rates
|= WLAN_RATE_2M
;
1229 if ((sta
->supported_rates
[i
] & 0x7f) == 11)
1230 sta
->tx_supp_rates
|= WLAN_RATE_5M5
;
1231 if ((sta
->supported_rates
[i
] & 0x7f) == 22)
1232 sta
->tx_supp_rates
|= WLAN_RATE_11M
;
1234 sta
->tx_max_rate
= sta
->tx_rate
= sta
->tx_rate_idx
= 0;
1235 if (sta
->tx_supp_rates
& WLAN_RATE_1M
) {
1236 sta
->tx_max_rate
= 0;
1237 if (ap_tx_rate_ok(0, sta
, sta
->local
)) {
1239 sta
->tx_rate_idx
= 0;
1242 if (sta
->tx_supp_rates
& WLAN_RATE_2M
) {
1243 sta
->tx_max_rate
= 1;
1244 if (ap_tx_rate_ok(1, sta
, sta
->local
)) {
1246 sta
->tx_rate_idx
= 1;
1249 if (sta
->tx_supp_rates
& WLAN_RATE_5M5
) {
1250 sta
->tx_max_rate
= 2;
1251 if (ap_tx_rate_ok(2, sta
, sta
->local
)) {
1253 sta
->tx_rate_idx
= 2;
1256 if (sta
->tx_supp_rates
& WLAN_RATE_11M
) {
1257 sta
->tx_max_rate
= 3;
1258 if (ap_tx_rate_ok(3, sta
, sta
->local
)) {
1260 sta
->tx_rate_idx
= 3;
1266 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1268 static void ap_crypt_init(struct ap_data
*ap
)
1270 ap
->crypt
= lib80211_get_crypto_ops("WEP");
1273 if (ap
->crypt
->init
) {
1274 ap
->crypt_priv
= ap
->crypt
->init(0);
1275 if (ap
->crypt_priv
== NULL
)
1278 u8 key
[WEP_KEY_LEN
];
1279 get_random_bytes(key
, WEP_KEY_LEN
);
1280 ap
->crypt
->set_key(key
, WEP_KEY_LEN
, NULL
,
1286 if (ap
->crypt
== NULL
) {
1287 printk(KERN_WARNING
"AP could not initialize WEP: load module "
1288 "lib80211_crypt_wep.ko\n");
1293 /* Generate challenge data for shared key authentication. IEEE 802.11 specifies
1294 * that WEP algorithm is used for generating challenge. This should be unique,
1295 * but otherwise there is not really need for randomness etc. Initialize WEP
1296 * with pseudo random key and then use increasing IV to get unique challenge
1299 * Called only as a scheduled task for pending AP frames.
1301 static char * ap_auth_make_challenge(struct ap_data
*ap
)
1304 struct sk_buff
*skb
;
1306 if (ap
->crypt
== NULL
) {
1308 if (ap
->crypt
== NULL
)
1312 tmpbuf
= kmalloc(WLAN_AUTH_CHALLENGE_LEN
, GFP_ATOMIC
);
1313 if (tmpbuf
== NULL
) {
1314 PDEBUG(DEBUG_AP
, "AP: kmalloc failed for challenge\n");
1318 skb
= dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN
+
1319 ap
->crypt
->extra_mpdu_prefix_len
+
1320 ap
->crypt
->extra_mpdu_postfix_len
);
1326 skb_reserve(skb
, ap
->crypt
->extra_mpdu_prefix_len
);
1327 skb_put_zero(skb
, WLAN_AUTH_CHALLENGE_LEN
);
1328 if (ap
->crypt
->encrypt_mpdu(skb
, 0, ap
->crypt_priv
)) {
1334 skb_copy_from_linear_data_offset(skb
, ap
->crypt
->extra_mpdu_prefix_len
,
1335 tmpbuf
, WLAN_AUTH_CHALLENGE_LEN
);
1342 /* Called only as a scheduled task for pending AP frames. */
1343 static void handle_authen(local_info_t
*local
, struct sk_buff
*skb
,
1344 struct hostap_80211_rx_status
*rx_stats
)
1346 struct net_device
*dev
= local
->dev
;
1347 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
1349 struct ap_data
*ap
= local
->ap
;
1350 char body
[8 + WLAN_AUTH_CHALLENGE_LEN
], *challenge
= NULL
;
1352 u16 auth_alg
, auth_transaction
, status_code
;
1354 u16 resp
= WLAN_STATUS_SUCCESS
;
1355 struct sta_info
*sta
= NULL
;
1356 struct lib80211_crypt_data
*crypt
;
1359 len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
1361 hdrlen
= hostap_80211_get_hdrlen(hdr
->frame_control
);
1364 PDEBUG(DEBUG_AP
, "%s: handle_authen - too short payload "
1365 "(len=%d) from %pM\n", dev
->name
, len
, hdr
->addr2
);
1369 spin_lock_bh(&local
->ap
->sta_table_lock
);
1370 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1372 atomic_inc(&sta
->users
);
1373 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1375 if (sta
&& sta
->crypt
)
1379 if (skb
->len
>= hdrlen
+ 3)
1380 idx
= skb
->data
[hdrlen
+ 3] >> 6;
1381 crypt
= local
->crypt_info
.crypt
[idx
];
1384 pos
= (__le16
*) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
1385 auth_alg
= __le16_to_cpu(*pos
);
1387 auth_transaction
= __le16_to_cpu(*pos
);
1389 status_code
= __le16_to_cpu(*pos
);
1392 if (ether_addr_equal(dev
->dev_addr
, hdr
->addr2
) ||
1393 ap_control_mac_deny(&ap
->mac_restrictions
, hdr
->addr2
)) {
1394 txt
= "authentication denied";
1395 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1399 if (((local
->auth_algs
& PRISM2_AUTH_OPEN
) &&
1400 auth_alg
== WLAN_AUTH_OPEN
) ||
1401 ((local
->auth_algs
& PRISM2_AUTH_SHARED_KEY
) &&
1402 crypt
&& auth_alg
== WLAN_AUTH_SHARED_KEY
)) {
1404 txt
= "unsupported algorithm";
1405 resp
= WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
;
1411 if (*u
== WLAN_EID_CHALLENGE
) {
1412 if (*(u
+ 1) != WLAN_AUTH_CHALLENGE_LEN
) {
1413 txt
= "invalid challenge len";
1414 resp
= WLAN_STATUS_CHALLENGE_FAIL
;
1417 if (len
- 8 < WLAN_AUTH_CHALLENGE_LEN
) {
1418 txt
= "challenge underflow";
1419 resp
= WLAN_STATUS_CHALLENGE_FAIL
;
1422 challenge
= (char *) (u
+ 2);
1426 if (sta
&& sta
->ap
) {
1427 if (time_after(jiffies
, sta
->u
.ap
.last_beacon
+
1428 (10 * sta
->listen_interval
* HZ
) / 1024)) {
1429 PDEBUG(DEBUG_AP
, "%s: no beacons received for a while,"
1430 " assuming AP %pM is now STA\n",
1431 dev
->name
, sta
->addr
);
1434 sta
->u
.sta
.challenge
= NULL
;
1436 txt
= "AP trying to authenticate?";
1437 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1442 if ((auth_alg
== WLAN_AUTH_OPEN
&& auth_transaction
== 1) ||
1443 (auth_alg
== WLAN_AUTH_SHARED_KEY
&&
1444 (auth_transaction
== 1 ||
1445 (auth_transaction
== 3 && sta
!= NULL
&&
1446 sta
->u
.sta
.challenge
!= NULL
)))) {
1448 txt
= "unknown authentication transaction number";
1449 resp
= WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION
;
1456 if (local
->ap
->num_sta
>= MAX_STA_COUNT
) {
1457 /* FIX: might try to remove some old STAs first? */
1458 txt
= "no more room for new STAs";
1459 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1463 sta
= ap_add_sta(local
->ap
, hdr
->addr2
);
1465 txt
= "ap_add_sta failed";
1466 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1472 case WLAN_AUTH_OPEN
:
1474 /* IEEE 802.11 standard is not completely clear about
1475 * whether STA is considered authenticated after
1476 * authentication OK frame has been send or after it
1477 * has been ACKed. In order to reduce interoperability
1478 * issues, mark the STA authenticated before ACK. */
1479 sta
->flags
|= WLAN_STA_AUTH
;
1482 case WLAN_AUTH_SHARED_KEY
:
1483 if (auth_transaction
== 1) {
1484 if (sta
->u
.sta
.challenge
== NULL
) {
1485 sta
->u
.sta
.challenge
=
1486 ap_auth_make_challenge(local
->ap
);
1487 if (sta
->u
.sta
.challenge
== NULL
) {
1488 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1493 if (sta
->u
.sta
.challenge
== NULL
||
1494 challenge
== NULL
||
1495 memcmp(sta
->u
.sta
.challenge
, challenge
,
1496 WLAN_AUTH_CHALLENGE_LEN
) != 0 ||
1497 !ieee80211_has_protected(hdr
->frame_control
)) {
1498 txt
= "challenge response incorrect";
1499 resp
= WLAN_STATUS_CHALLENGE_FAIL
;
1503 txt
= "challenge OK - authOK";
1504 /* IEEE 802.11 standard is not completely clear about
1505 * whether STA is considered authenticated after
1506 * authentication OK frame has been send or after it
1507 * has been ACKed. In order to reduce interoperability
1508 * issues, mark the STA authenticated before ACK. */
1509 sta
->flags
|= WLAN_STA_AUTH
;
1510 kfree(sta
->u
.sta
.challenge
);
1511 sta
->u
.sta
.challenge
= NULL
;
1517 pos
= (__le16
*) body
;
1518 *pos
= cpu_to_le16(auth_alg
);
1520 *pos
= cpu_to_le16(auth_transaction
+ 1);
1522 *pos
= cpu_to_le16(resp
); /* status_code */
1526 if (resp
== WLAN_STATUS_SUCCESS
&& sta
!= NULL
&&
1527 sta
->u
.sta
.challenge
!= NULL
&&
1528 auth_alg
== WLAN_AUTH_SHARED_KEY
&& auth_transaction
== 1) {
1529 u8
*tmp
= (u8
*) pos
;
1530 *tmp
++ = WLAN_EID_CHALLENGE
;
1531 *tmp
++ = WLAN_AUTH_CHALLENGE_LEN
;
1533 memcpy(pos
, sta
->u
.sta
.challenge
, WLAN_AUTH_CHALLENGE_LEN
);
1534 olen
+= 2 + WLAN_AUTH_CHALLENGE_LEN
;
1537 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
| IEEE80211_STYPE_AUTH
,
1538 body
, olen
, hdr
->addr2
, ap
->tx_callback_auth
);
1541 sta
->last_rx
= jiffies
;
1542 atomic_dec(&sta
->users
);
1546 PDEBUG(DEBUG_AP
, "%s: %pM auth (alg=%d "
1547 "trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n",
1548 dev
->name
, hdr
->addr2
,
1549 auth_alg
, auth_transaction
, status_code
, len
,
1550 le16_to_cpu(hdr
->frame_control
), resp
, txt
);
1555 /* Called only as a scheduled task for pending AP frames. */
1556 static void handle_assoc(local_info_t
*local
, struct sk_buff
*skb
,
1557 struct hostap_80211_rx_status
*rx_stats
, int reassoc
)
1559 struct net_device
*dev
= local
->dev
;
1560 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
1561 char body
[12], *p
, *lpos
;
1564 u16 resp
= WLAN_STATUS_SUCCESS
;
1565 struct sta_info
*sta
= NULL
;
1566 int send_deauth
= 0;
1568 u8 prev_ap
[ETH_ALEN
];
1570 left
= len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
1572 if (len
< (reassoc
? 10 : 4)) {
1573 PDEBUG(DEBUG_AP
, "%s: handle_assoc - too short payload "
1574 "(len=%d, reassoc=%d) from %pM\n",
1575 dev
->name
, len
, reassoc
, hdr
->addr2
);
1579 spin_lock_bh(&local
->ap
->sta_table_lock
);
1580 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1581 if (sta
== NULL
|| (sta
->flags
& WLAN_STA_AUTH
) == 0) {
1582 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1583 txt
= "trying to associate before authentication";
1585 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1586 sta
= NULL
; /* do not decrement sta->users */
1589 atomic_inc(&sta
->users
);
1590 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1592 pos
= (__le16
*) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
1593 sta
->capability
= __le16_to_cpu(*pos
);
1595 sta
->listen_interval
= __le16_to_cpu(*pos
);
1599 memcpy(prev_ap
, pos
, ETH_ALEN
);
1600 pos
++; pos
++; pos
++; left
-= 6;
1602 eth_zero_addr(prev_ap
);
1606 unsigned char *u
= (unsigned char *) pos
;
1608 if (*u
== WLAN_EID_SSID
) {
1613 if (ileft
> left
|| ileft
> MAX_SSID_LEN
) {
1614 txt
= "SSID overflow";
1615 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1619 if (ileft
!= strlen(local
->essid
) ||
1620 memcmp(local
->essid
, u
, ileft
) != 0) {
1621 txt
= "not our SSID";
1622 resp
= WLAN_STATUS_ASSOC_DENIED_UNSPEC
;
1630 if (left
>= 2 && *u
== WLAN_EID_SUPP_RATES
) {
1635 if (ileft
> left
|| ileft
== 0 ||
1636 ileft
> WLAN_SUPP_RATES_MAX
) {
1637 txt
= "SUPP_RATES len error";
1638 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1642 memset(sta
->supported_rates
, 0,
1643 sizeof(sta
->supported_rates
));
1644 memcpy(sta
->supported_rates
, u
, ileft
);
1645 prism2_check_tx_rates(sta
);
1652 PDEBUG(DEBUG_AP
, "%s: assoc from %pM"
1653 " with extra data (%d bytes) [",
1654 dev
->name
, hdr
->addr2
, left
);
1656 PDEBUG2(DEBUG_AP
, "<%02x>", *u
);
1659 PDEBUG2(DEBUG_AP
, "]\n");
1662 txt
= "frame underflow";
1663 resp
= WLAN_STATUS_UNSPECIFIED_FAILURE
;
1667 /* get a unique AID */
1669 txt
= "OK, old AID";
1671 spin_lock_bh(&local
->ap
->sta_table_lock
);
1672 for (sta
->aid
= 1; sta
->aid
<= MAX_AID_TABLE_SIZE
; sta
->aid
++)
1673 if (local
->ap
->sta_aid
[sta
->aid
- 1] == NULL
)
1675 if (sta
->aid
> MAX_AID_TABLE_SIZE
) {
1677 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1678 resp
= WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA
;
1679 txt
= "no room for more AIDs";
1681 local
->ap
->sta_aid
[sta
->aid
- 1] = sta
;
1682 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1683 txt
= "OK, new AID";
1688 pos
= (__le16
*) body
;
1691 *pos
= cpu_to_le16(WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH
);
1694 /* FIX: CF-Pollable and CF-PollReq should be set to match the
1695 * values in beacons/probe responses */
1696 /* FIX: how about privacy and WEP? */
1698 *pos
= cpu_to_le16(WLAN_CAPABILITY_ESS
);
1702 *pos
= cpu_to_le16(resp
);
1705 *pos
= cpu_to_le16((sta
&& sta
->aid
> 0 ? sta
->aid
: 0) |
1706 BIT(14) | BIT(15)); /* AID */
1709 /* Supported rates (Information element) */
1711 *p
++ = WLAN_EID_SUPP_RATES
;
1714 if (local
->tx_rate_control
& WLAN_RATE_1M
) {
1715 *p
++ = local
->basic_rates
& WLAN_RATE_1M
? 0x82 : 0x02;
1718 if (local
->tx_rate_control
& WLAN_RATE_2M
) {
1719 *p
++ = local
->basic_rates
& WLAN_RATE_2M
? 0x84 : 0x04;
1722 if (local
->tx_rate_control
& WLAN_RATE_5M5
) {
1723 *p
++ = local
->basic_rates
& WLAN_RATE_5M5
?
1727 if (local
->tx_rate_control
& WLAN_RATE_11M
) {
1728 *p
++ = local
->basic_rates
& WLAN_RATE_11M
?
1735 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
|
1736 (send_deauth
? IEEE80211_STYPE_DEAUTH
:
1737 (reassoc
? IEEE80211_STYPE_REASSOC_RESP
:
1738 IEEE80211_STYPE_ASSOC_RESP
)),
1739 body
, (u8
*) pos
- (u8
*) body
,
1741 send_deauth
? 0 : local
->ap
->tx_callback_assoc
);
1744 if (resp
== WLAN_STATUS_SUCCESS
) {
1745 sta
->last_rx
= jiffies
;
1746 /* STA will be marked associated from TX callback, if
1747 * AssocResp is ACKed */
1749 atomic_dec(&sta
->users
);
1753 PDEBUG(DEBUG_AP
, "%s: %pM %sassoc (len=%d "
1754 "prev_ap=%pM) => %d(%d) (%s)\n",
1757 reassoc
? "re" : "", len
,
1759 resp
, send_deauth
, txt
);
1764 /* Called only as a scheduled task for pending AP frames. */
1765 static void handle_deauth(local_info_t
*local
, struct sk_buff
*skb
,
1766 struct hostap_80211_rx_status
*rx_stats
)
1768 struct net_device
*dev
= local
->dev
;
1769 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
1770 char *body
= (char *) (skb
->data
+ IEEE80211_MGMT_HDR_LEN
);
1774 struct sta_info
*sta
= NULL
;
1776 len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
1779 printk("handle_deauth - too short payload (len=%d)\n", len
);
1783 pos
= (__le16
*) body
;
1784 reason_code
= le16_to_cpu(*pos
);
1786 PDEBUG(DEBUG_AP
, "%s: deauthentication: %pM len=%d, "
1787 "reason_code=%d\n", dev
->name
, hdr
->addr2
,
1790 spin_lock_bh(&local
->ap
->sta_table_lock
);
1791 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1793 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
1794 hostap_event_expired_sta(local
->dev
, sta
);
1795 sta
->flags
&= ~(WLAN_STA_AUTH
| WLAN_STA_ASSOC
);
1797 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1799 printk("%s: deauthentication from %pM, "
1800 "reason_code=%d, but STA not authenticated\n", dev
->name
,
1801 hdr
->addr2
, reason_code
);
1806 /* Called only as a scheduled task for pending AP frames. */
1807 static void handle_disassoc(local_info_t
*local
, struct sk_buff
*skb
,
1808 struct hostap_80211_rx_status
*rx_stats
)
1810 struct net_device
*dev
= local
->dev
;
1811 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
1812 char *body
= skb
->data
+ IEEE80211_MGMT_HDR_LEN
;
1816 struct sta_info
*sta
= NULL
;
1818 len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
1821 printk("handle_disassoc - too short payload (len=%d)\n", len
);
1825 pos
= (__le16
*) body
;
1826 reason_code
= le16_to_cpu(*pos
);
1828 PDEBUG(DEBUG_AP
, "%s: disassociation: %pM len=%d, "
1829 "reason_code=%d\n", dev
->name
, hdr
->addr2
,
1832 spin_lock_bh(&local
->ap
->sta_table_lock
);
1833 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1835 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
1836 hostap_event_expired_sta(local
->dev
, sta
);
1837 sta
->flags
&= ~WLAN_STA_ASSOC
;
1839 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1841 printk("%s: disassociation from %pM, "
1842 "reason_code=%d, but STA not authenticated\n",
1843 dev
->name
, hdr
->addr2
, reason_code
);
1848 /* Called only as a scheduled task for pending AP frames. */
1849 static void ap_handle_data_nullfunc(local_info_t
*local
,
1850 struct ieee80211_hdr
*hdr
)
1852 struct net_device
*dev
= local
->dev
;
1854 /* some STA f/w's seem to require control::ACK frame for
1855 * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does
1857 * send control::ACK for the data::nullfunc */
1859 printk(KERN_DEBUG
"Sending control::ACK for data::nullfunc\n");
1860 prism2_send_mgmt(dev
, IEEE80211_FTYPE_CTL
| IEEE80211_STYPE_ACK
,
1861 NULL
, 0, hdr
->addr2
, 0);
1865 /* Called only as a scheduled task for pending AP frames. */
1866 static void ap_handle_dropped_data(local_info_t
*local
,
1867 struct ieee80211_hdr
*hdr
)
1869 struct net_device
*dev
= local
->dev
;
1870 struct sta_info
*sta
;
1873 spin_lock_bh(&local
->ap
->sta_table_lock
);
1874 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1876 atomic_inc(&sta
->users
);
1877 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1879 if (sta
!= NULL
&& (sta
->flags
& WLAN_STA_ASSOC
)) {
1880 PDEBUG(DEBUG_AP
, "ap_handle_dropped_data: STA is now okay?\n");
1881 atomic_dec(&sta
->users
);
1885 reason
= cpu_to_le16(WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA
);
1886 prism2_send_mgmt(dev
, IEEE80211_FTYPE_MGMT
|
1887 ((sta
== NULL
|| !(sta
->flags
& WLAN_STA_ASSOC
)) ?
1888 IEEE80211_STYPE_DEAUTH
: IEEE80211_STYPE_DISASSOC
),
1889 (char *) &reason
, sizeof(reason
), hdr
->addr2
, 0);
1892 atomic_dec(&sta
->users
);
1895 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1898 /* Called only as a scheduled task for pending AP frames. */
1899 static void pspoll_send_buffered(local_info_t
*local
, struct sta_info
*sta
,
1900 struct sk_buff
*skb
)
1902 struct hostap_skb_tx_data
*meta
;
1904 if (!(sta
->flags
& WLAN_STA_PS
)) {
1905 /* Station has moved to non-PS mode, so send all buffered
1906 * frames using normal device queue. */
1907 dev_queue_xmit(skb
);
1911 /* add a flag for hostap_handle_sta_tx() to know that this skb should
1912 * be passed through even though STA is using PS */
1913 meta
= (struct hostap_skb_tx_data
*) skb
->cb
;
1914 meta
->flags
|= HOSTAP_TX_FLAGS_BUFFERED_FRAME
;
1915 if (!skb_queue_empty(&sta
->tx_buf
)) {
1916 /* indicate to STA that more frames follow */
1917 meta
->flags
|= HOSTAP_TX_FLAGS_ADD_MOREDATA
;
1919 dev_queue_xmit(skb
);
1923 /* Called only as a scheduled task for pending AP frames. */
1924 static void handle_pspoll(local_info_t
*local
,
1925 struct ieee80211_hdr
*hdr
,
1926 struct hostap_80211_rx_status
*rx_stats
)
1928 struct net_device
*dev
= local
->dev
;
1929 struct sta_info
*sta
;
1931 struct sk_buff
*skb
;
1933 PDEBUG(DEBUG_PS2
, "handle_pspoll: BSSID=%pM, TA=%pM PWRMGT=%d\n",
1934 hdr
->addr1
, hdr
->addr2
, !!ieee80211_has_pm(hdr
->frame_control
));
1936 if (!ether_addr_equal(hdr
->addr1
, dev
->dev_addr
)) {
1938 "handle_pspoll - addr1(BSSID)=%pM not own MAC\n",
1943 aid
= le16_to_cpu(hdr
->duration_id
);
1944 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) {
1945 PDEBUG(DEBUG_PS
, " PSPOLL and AID[15:14] not set\n");
1948 aid
&= ~(BIT(15) | BIT(14));
1949 if (aid
== 0 || aid
> MAX_AID_TABLE_SIZE
) {
1950 PDEBUG(DEBUG_PS
, " invalid aid=%d\n", aid
);
1953 PDEBUG(DEBUG_PS2
, " aid=%d\n", aid
);
1955 spin_lock_bh(&local
->ap
->sta_table_lock
);
1956 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
1958 atomic_inc(&sta
->users
);
1959 spin_unlock_bh(&local
->ap
->sta_table_lock
);
1962 PDEBUG(DEBUG_PS
, " STA not found\n");
1965 if (sta
->aid
!= aid
) {
1966 PDEBUG(DEBUG_PS
, " received aid=%i does not match with "
1967 "assoc.aid=%d\n", aid
, sta
->aid
);
1972 * - add timeout for buffering (clear aid in TIM vector if buffer timed
1973 * out (expiry time must be longer than ListenInterval for
1974 * the corresponding STA; "8802-11: 11.2.1.9 AP aging function"
1975 * - what to do, if buffered, pspolled, and sent frame is not ACKed by
1976 * sta; store buffer for later use and leave TIM aid bit set? use
1977 * TX event to check whether frame was ACKed?
1980 while ((skb
= skb_dequeue(&sta
->tx_buf
)) != NULL
) {
1981 /* send buffered frame .. */
1982 PDEBUG(DEBUG_PS2
, "Sending buffered frame to STA after PS POLL"
1983 " (buffer_count=%d)\n", skb_queue_len(&sta
->tx_buf
));
1985 pspoll_send_buffered(local
, sta
, skb
);
1987 if (sta
->flags
& WLAN_STA_PS
) {
1988 /* send only one buffered packet per PS Poll */
1989 /* FIX: should ignore further PS Polls until the
1990 * buffered packet that was just sent is acknowledged
1991 * (Tx or TxExc event) */
1996 if (skb_queue_empty(&sta
->tx_buf
)) {
1997 /* try to clear aid from TIM */
1998 if (!(sta
->flags
& WLAN_STA_TIM
))
1999 PDEBUG(DEBUG_PS2
, "Re-unsetting TIM for aid %d\n",
2001 hostap_set_tim(local
, aid
, 0);
2002 sta
->flags
&= ~WLAN_STA_TIM
;
2005 atomic_dec(&sta
->users
);
2009 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2011 static void handle_wds_oper_queue(struct work_struct
*work
)
2013 struct ap_data
*ap
= container_of(work
, struct ap_data
,
2015 local_info_t
*local
= ap
->local
;
2016 struct wds_oper_data
*entry
, *prev
;
2018 spin_lock_bh(&local
->lock
);
2019 entry
= local
->ap
->wds_oper_entries
;
2020 local
->ap
->wds_oper_entries
= NULL
;
2021 spin_unlock_bh(&local
->lock
);
2024 PDEBUG(DEBUG_AP
, "%s: %s automatic WDS connection "
2027 entry
->type
== WDS_ADD
? "adding" : "removing",
2029 if (entry
->type
== WDS_ADD
)
2030 prism2_wds_add(local
, entry
->addr
, 0);
2031 else if (entry
->type
== WDS_DEL
)
2032 prism2_wds_del(local
, entry
->addr
, 0, 1);
2035 entry
= entry
->next
;
2041 /* Called only as a scheduled task for pending AP frames. */
2042 static void handle_beacon(local_info_t
*local
, struct sk_buff
*skb
,
2043 struct hostap_80211_rx_status
*rx_stats
)
2045 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
2046 char *body
= skb
->data
+ IEEE80211_MGMT_HDR_LEN
;
2048 u16 beacon_int
, capability
;
2051 unsigned char *supp_rates
= NULL
;
2052 int ssid_len
= 0, supp_rates_len
= 0;
2053 struct sta_info
*sta
= NULL
;
2054 int new_sta
= 0, channel
= -1;
2056 len
= skb
->len
- IEEE80211_MGMT_HDR_LEN
;
2058 if (len
< 8 + 2 + 2) {
2059 printk(KERN_DEBUG
"handle_beacon - too short payload "
2064 pos
= (__le16
*) body
;
2067 /* Timestamp (8 octets) */
2068 pos
+= 4; left
-= 8;
2069 /* Beacon interval (2 octets) */
2070 beacon_int
= le16_to_cpu(*pos
);
2072 /* Capability information (2 octets) */
2073 capability
= le16_to_cpu(*pos
);
2076 if (local
->ap
->ap_policy
!= AP_OTHER_AP_EVEN_IBSS
&&
2077 capability
& WLAN_CAPABILITY_IBSS
)
2082 unsigned char *u
= (unsigned char *) pos
;
2084 if (*u
== WLAN_EID_SSID
) {
2089 if (ileft
> left
|| ileft
> MAX_SSID_LEN
) {
2090 PDEBUG(DEBUG_AP
, "SSID: overflow\n");
2094 if (local
->ap
->ap_policy
== AP_OTHER_AP_SAME_SSID
&&
2095 (ileft
!= strlen(local
->essid
) ||
2096 memcmp(local
->essid
, u
, ileft
) != 0)) {
2108 if (*u
== WLAN_EID_SUPP_RATES
) {
2113 if (ileft
> left
|| ileft
== 0 || ileft
> 8) {
2114 PDEBUG(DEBUG_AP
, " - SUPP_RATES len error\n");
2119 supp_rates_len
= ileft
;
2125 if (*u
== WLAN_EID_DS_PARAMS
) {
2130 if (ileft
> left
|| ileft
!= 1) {
2131 PDEBUG(DEBUG_AP
, " - DS_PARAMS len error\n");
2142 spin_lock_bh(&local
->ap
->sta_table_lock
);
2143 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
2145 atomic_inc(&sta
->users
);
2146 spin_unlock_bh(&local
->ap
->sta_table_lock
);
2151 sta
= ap_add_sta(local
->ap
, hdr
->addr2
);
2153 printk(KERN_INFO
"prism2: kmalloc failed for AP "
2154 "data structure\n");
2157 hostap_event_new_sta(local
->dev
, sta
);
2159 /* mark APs authentication and associated for pseudo ad-hoc
2160 * style communication */
2161 sta
->flags
= WLAN_STA_AUTH
| WLAN_STA_ASSOC
;
2163 if (local
->ap
->autom_ap_wds
) {
2164 hostap_wds_link_oper(local
, sta
->addr
, WDS_ADD
);
2170 sta
->u
.ap
.ssid_len
= ssid_len
;
2171 memcpy(sta
->u
.ap
.ssid
, ssid
, ssid_len
);
2172 sta
->u
.ap
.ssid
[ssid_len
] = '\0';
2174 sta
->u
.ap
.ssid_len
= 0;
2175 sta
->u
.ap
.ssid
[0] = '\0';
2177 sta
->u
.ap
.channel
= channel
;
2179 sta
->rx_bytes
+= len
;
2180 sta
->u
.ap
.last_beacon
= sta
->last_rx
= jiffies
;
2181 sta
->capability
= capability
;
2182 sta
->listen_interval
= beacon_int
;
2184 atomic_dec(&sta
->users
);
2187 memset(sta
->supported_rates
, 0, sizeof(sta
->supported_rates
));
2188 memcpy(sta
->supported_rates
, supp_rates
, supp_rates_len
);
2189 prism2_check_tx_rates(sta
);
2193 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2196 /* Called only as a tasklet. */
2197 static void handle_ap_item(local_info_t
*local
, struct sk_buff
*skb
,
2198 struct hostap_80211_rx_status
*rx_stats
)
2200 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2201 struct net_device
*dev
= local
->dev
;
2202 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2203 u16 fc
, type
, stype
;
2204 struct ieee80211_hdr
*hdr
;
2206 /* FIX: should give skb->len to handler functions and check that the
2207 * buffer is long enough */
2208 hdr
= (struct ieee80211_hdr
*) skb
->data
;
2209 fc
= le16_to_cpu(hdr
->frame_control
);
2210 type
= fc
& IEEE80211_FCTL_FTYPE
;
2211 stype
= fc
& IEEE80211_FCTL_STYPE
;
2213 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2214 if (!local
->hostapd
&& type
== IEEE80211_FTYPE_DATA
) {
2215 PDEBUG(DEBUG_AP
, "handle_ap_item - data frame\n");
2217 if (!(fc
& IEEE80211_FCTL_TODS
) ||
2218 (fc
& IEEE80211_FCTL_FROMDS
)) {
2219 if (stype
== IEEE80211_STYPE_NULLFUNC
) {
2220 /* no ToDS nullfunc seems to be used to check
2221 * AP association; so send reject message to
2222 * speed up re-association */
2223 ap_handle_dropped_data(local
, hdr
);
2226 PDEBUG(DEBUG_AP
, " not ToDS frame (fc=0x%04x)\n",
2231 if (!ether_addr_equal(hdr
->addr1
, dev
->dev_addr
)) {
2232 PDEBUG(DEBUG_AP
, "handle_ap_item - addr1(BSSID)=%pM"
2233 " not own MAC\n", hdr
->addr1
);
2237 if (local
->ap
->nullfunc_ack
&&
2238 stype
== IEEE80211_STYPE_NULLFUNC
)
2239 ap_handle_data_nullfunc(local
, hdr
);
2241 ap_handle_dropped_data(local
, hdr
);
2245 if (type
== IEEE80211_FTYPE_MGMT
&& stype
== IEEE80211_STYPE_BEACON
) {
2246 handle_beacon(local
, skb
, rx_stats
);
2249 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2251 if (type
== IEEE80211_FTYPE_CTL
&& stype
== IEEE80211_STYPE_PSPOLL
) {
2252 handle_pspoll(local
, hdr
, rx_stats
);
2256 if (local
->hostapd
) {
2257 PDEBUG(DEBUG_AP
, "Unknown frame in AP queue: type=0x%02x "
2258 "subtype=0x%02x\n", type
, stype
);
2262 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2263 if (type
!= IEEE80211_FTYPE_MGMT
) {
2264 PDEBUG(DEBUG_AP
, "handle_ap_item - not a management frame?\n");
2268 if (!ether_addr_equal(hdr
->addr1
, dev
->dev_addr
)) {
2269 PDEBUG(DEBUG_AP
, "handle_ap_item - addr1(DA)=%pM"
2270 " not own MAC\n", hdr
->addr1
);
2274 if (!ether_addr_equal(hdr
->addr3
, dev
->dev_addr
)) {
2275 PDEBUG(DEBUG_AP
, "handle_ap_item - addr3(BSSID)=%pM"
2276 " not own MAC\n", hdr
->addr3
);
2281 case IEEE80211_STYPE_ASSOC_REQ
:
2282 handle_assoc(local
, skb
, rx_stats
, 0);
2284 case IEEE80211_STYPE_ASSOC_RESP
:
2285 PDEBUG(DEBUG_AP
, "==> ASSOC RESP (ignored)\n");
2287 case IEEE80211_STYPE_REASSOC_REQ
:
2288 handle_assoc(local
, skb
, rx_stats
, 1);
2290 case IEEE80211_STYPE_REASSOC_RESP
:
2291 PDEBUG(DEBUG_AP
, "==> REASSOC RESP (ignored)\n");
2293 case IEEE80211_STYPE_ATIM
:
2294 PDEBUG(DEBUG_AP
, "==> ATIM (ignored)\n");
2296 case IEEE80211_STYPE_DISASSOC
:
2297 handle_disassoc(local
, skb
, rx_stats
);
2299 case IEEE80211_STYPE_AUTH
:
2300 handle_authen(local
, skb
, rx_stats
);
2302 case IEEE80211_STYPE_DEAUTH
:
2303 handle_deauth(local
, skb
, rx_stats
);
2306 PDEBUG(DEBUG_AP
, "Unknown mgmt frame subtype 0x%02x\n",
2310 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2317 /* Called only as a tasklet (software IRQ) */
2318 void hostap_rx(struct net_device
*dev
, struct sk_buff
*skb
,
2319 struct hostap_80211_rx_status
*rx_stats
)
2321 struct hostap_interface
*iface
;
2322 local_info_t
*local
;
2323 struct ieee80211_hdr
*hdr
;
2325 iface
= netdev_priv(dev
);
2326 local
= iface
->local
;
2331 dev
->stats
.rx_packets
++;
2333 hdr
= (struct ieee80211_hdr
*) skb
->data
;
2335 if (local
->ap
->ap_policy
== AP_OTHER_AP_SKIP_ALL
&&
2336 ieee80211_is_beacon(hdr
->frame_control
))
2339 skb
->protocol
= cpu_to_be16(ETH_P_HOSTAP
);
2340 handle_ap_item(local
, skb
, rx_stats
);
2348 /* Called only as a tasklet (software IRQ) */
2349 static void schedule_packet_send(local_info_t
*local
, struct sta_info
*sta
)
2351 struct sk_buff
*skb
;
2352 struct ieee80211_hdr
*hdr
;
2353 struct hostap_80211_rx_status rx_stats
;
2355 if (skb_queue_empty(&sta
->tx_buf
))
2358 skb
= dev_alloc_skb(16);
2360 printk(KERN_DEBUG
"%s: schedule_packet_send: skb alloc "
2361 "failed\n", local
->dev
->name
);
2365 hdr
= skb_put(skb
, 16);
2367 /* Generate a fake pspoll frame to start packet delivery */
2368 hdr
->frame_control
= cpu_to_le16(
2369 IEEE80211_FTYPE_CTL
| IEEE80211_STYPE_PSPOLL
);
2370 memcpy(hdr
->addr1
, local
->dev
->dev_addr
, ETH_ALEN
);
2371 memcpy(hdr
->addr2
, sta
->addr
, ETH_ALEN
);
2372 hdr
->duration_id
= cpu_to_le16(sta
->aid
| BIT(15) | BIT(14));
2375 "%s: Scheduling buffered packet delivery for STA %pM\n",
2376 local
->dev
->name
, sta
->addr
);
2378 skb
->dev
= local
->dev
;
2380 memset(&rx_stats
, 0, sizeof(rx_stats
));
2381 hostap_rx(local
->dev
, skb
, &rx_stats
);
2385 int prism2_ap_get_sta_qual(local_info_t
*local
, struct sockaddr addr
[],
2386 struct iw_quality qual
[], int buf_size
,
2389 struct ap_data
*ap
= local
->ap
;
2390 struct list_head
*ptr
;
2393 spin_lock_bh(&ap
->sta_table_lock
);
2395 for (ptr
= ap
->sta_list
.next
; ptr
!= NULL
&& ptr
!= &ap
->sta_list
;
2397 struct sta_info
*sta
= (struct sta_info
*) ptr
;
2399 if (aplist
&& !sta
->ap
)
2401 addr
[count
].sa_family
= ARPHRD_ETHER
;
2402 memcpy(addr
[count
].sa_data
, sta
->addr
, ETH_ALEN
);
2403 if (sta
->last_rx_silence
== 0)
2404 qual
[count
].qual
= sta
->last_rx_signal
< 27 ?
2405 0 : (sta
->last_rx_signal
- 27) * 92 / 127;
2407 qual
[count
].qual
= sta
->last_rx_signal
-
2408 sta
->last_rx_silence
- 35;
2409 qual
[count
].level
= HFA384X_LEVEL_TO_dBm(sta
->last_rx_signal
);
2410 qual
[count
].noise
= HFA384X_LEVEL_TO_dBm(sta
->last_rx_silence
);
2411 qual
[count
].updated
= sta
->last_rx_updated
;
2413 sta
->last_rx_updated
= IW_QUAL_DBM
;
2416 if (count
>= buf_size
)
2419 spin_unlock_bh(&ap
->sta_table_lock
);
2425 /* Translate our list of Access Points & Stations to a card independent
2426 * format that the Wireless Tools will understand - Jean II */
2427 int prism2_ap_translate_scan(struct net_device
*dev
,
2428 struct iw_request_info
*info
, char *buffer
)
2430 struct hostap_interface
*iface
;
2431 local_info_t
*local
;
2433 struct list_head
*ptr
;
2434 struct iw_event iwe
;
2435 char *current_ev
= buffer
;
2436 char *end_buf
= buffer
+ IW_SCAN_MAX_DATA
;
2437 #if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT)
2441 iface
= netdev_priv(dev
);
2442 local
= iface
->local
;
2445 spin_lock_bh(&ap
->sta_table_lock
);
2447 for (ptr
= ap
->sta_list
.next
; ptr
!= NULL
&& ptr
!= &ap
->sta_list
;
2449 struct sta_info
*sta
= (struct sta_info
*) ptr
;
2451 /* First entry *MUST* be the AP MAC address */
2452 memset(&iwe
, 0, sizeof(iwe
));
2453 iwe
.cmd
= SIOCGIWAP
;
2454 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
2455 memcpy(iwe
.u
.ap_addr
.sa_data
, sta
->addr
, ETH_ALEN
);
2456 iwe
.len
= IW_EV_ADDR_LEN
;
2457 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
,
2458 &iwe
, IW_EV_ADDR_LEN
);
2460 /* Use the mode to indicate if it's a station or
2461 * an Access Point */
2462 memset(&iwe
, 0, sizeof(iwe
));
2463 iwe
.cmd
= SIOCGIWMODE
;
2465 iwe
.u
.mode
= IW_MODE_MASTER
;
2467 iwe
.u
.mode
= IW_MODE_INFRA
;
2468 iwe
.len
= IW_EV_UINT_LEN
;
2469 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
,
2470 &iwe
, IW_EV_UINT_LEN
);
2473 memset(&iwe
, 0, sizeof(iwe
));
2475 if (sta
->last_rx_silence
== 0)
2476 iwe
.u
.qual
.qual
= sta
->last_rx_signal
< 27 ?
2477 0 : (sta
->last_rx_signal
- 27) * 92 / 127;
2479 iwe
.u
.qual
.qual
= sta
->last_rx_signal
-
2480 sta
->last_rx_silence
- 35;
2481 iwe
.u
.qual
.level
= HFA384X_LEVEL_TO_dBm(sta
->last_rx_signal
);
2482 iwe
.u
.qual
.noise
= HFA384X_LEVEL_TO_dBm(sta
->last_rx_silence
);
2483 iwe
.u
.qual
.updated
= sta
->last_rx_updated
;
2484 iwe
.len
= IW_EV_QUAL_LEN
;
2485 current_ev
= iwe_stream_add_event(info
, current_ev
, end_buf
,
2486 &iwe
, IW_EV_QUAL_LEN
);
2488 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2490 memset(&iwe
, 0, sizeof(iwe
));
2491 iwe
.cmd
= SIOCGIWESSID
;
2492 iwe
.u
.data
.length
= sta
->u
.ap
.ssid_len
;
2493 iwe
.u
.data
.flags
= 1;
2494 current_ev
= iwe_stream_add_point(info
, current_ev
,
2498 memset(&iwe
, 0, sizeof(iwe
));
2499 iwe
.cmd
= SIOCGIWENCODE
;
2500 if (sta
->capability
& WLAN_CAPABILITY_PRIVACY
)
2502 IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
2504 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
2505 current_ev
= iwe_stream_add_point(info
, current_ev
,
2509 if (sta
->u
.ap
.channel
> 0 &&
2510 sta
->u
.ap
.channel
<= FREQ_COUNT
) {
2511 memset(&iwe
, 0, sizeof(iwe
));
2512 iwe
.cmd
= SIOCGIWFREQ
;
2513 iwe
.u
.freq
.m
= freq_list
[sta
->u
.ap
.channel
- 1]
2516 current_ev
= iwe_stream_add_event(
2517 info
, current_ev
, end_buf
, &iwe
,
2521 memset(&iwe
, 0, sizeof(iwe
));
2522 iwe
.cmd
= IWEVCUSTOM
;
2523 sprintf(buf
, "beacon_interval=%d",
2524 sta
->listen_interval
);
2525 iwe
.u
.data
.length
= strlen(buf
);
2526 current_ev
= iwe_stream_add_point(info
, current_ev
,
2527 end_buf
, &iwe
, buf
);
2529 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2531 sta
->last_rx_updated
= IW_QUAL_DBM
;
2533 /* To be continued, we should make good use of IWEVCUSTOM */
2536 spin_unlock_bh(&ap
->sta_table_lock
);
2538 return current_ev
- buffer
;
2542 static int prism2_hostapd_add_sta(struct ap_data
*ap
,
2543 struct prism2_hostapd_param
*param
)
2545 struct sta_info
*sta
;
2547 spin_lock_bh(&ap
->sta_table_lock
);
2548 sta
= ap_get_sta(ap
, param
->sta_addr
);
2550 atomic_inc(&sta
->users
);
2551 spin_unlock_bh(&ap
->sta_table_lock
);
2554 sta
= ap_add_sta(ap
, param
->sta_addr
);
2559 if (!(sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&& sta
->local
)
2560 hostap_event_new_sta(sta
->local
->dev
, sta
);
2562 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
;
2563 sta
->last_rx
= jiffies
;
2564 sta
->aid
= param
->u
.add_sta
.aid
;
2565 sta
->capability
= param
->u
.add_sta
.capability
;
2566 sta
->tx_supp_rates
= param
->u
.add_sta
.tx_supp_rates
;
2567 if (sta
->tx_supp_rates
& WLAN_RATE_1M
)
2568 sta
->supported_rates
[0] = 2;
2569 if (sta
->tx_supp_rates
& WLAN_RATE_2M
)
2570 sta
->supported_rates
[1] = 4;
2571 if (sta
->tx_supp_rates
& WLAN_RATE_5M5
)
2572 sta
->supported_rates
[2] = 11;
2573 if (sta
->tx_supp_rates
& WLAN_RATE_11M
)
2574 sta
->supported_rates
[3] = 22;
2575 prism2_check_tx_rates(sta
);
2576 atomic_dec(&sta
->users
);
2581 static int prism2_hostapd_remove_sta(struct ap_data
*ap
,
2582 struct prism2_hostapd_param
*param
)
2584 struct sta_info
*sta
;
2586 spin_lock_bh(&ap
->sta_table_lock
);
2587 sta
= ap_get_sta(ap
, param
->sta_addr
);
2589 ap_sta_hash_del(ap
, sta
);
2590 list_del(&sta
->list
);
2592 spin_unlock_bh(&ap
->sta_table_lock
);
2597 if ((sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&& sta
->local
)
2598 hostap_event_expired_sta(sta
->local
->dev
, sta
);
2599 ap_free_sta(ap
, sta
);
2605 static int prism2_hostapd_get_info_sta(struct ap_data
*ap
,
2606 struct prism2_hostapd_param
*param
)
2608 struct sta_info
*sta
;
2610 spin_lock_bh(&ap
->sta_table_lock
);
2611 sta
= ap_get_sta(ap
, param
->sta_addr
);
2613 atomic_inc(&sta
->users
);
2614 spin_unlock_bh(&ap
->sta_table_lock
);
2619 param
->u
.get_info_sta
.inactive_sec
= (jiffies
- sta
->last_rx
) / HZ
;
2621 atomic_dec(&sta
->users
);
2627 static int prism2_hostapd_set_flags_sta(struct ap_data
*ap
,
2628 struct prism2_hostapd_param
*param
)
2630 struct sta_info
*sta
;
2632 spin_lock_bh(&ap
->sta_table_lock
);
2633 sta
= ap_get_sta(ap
, param
->sta_addr
);
2635 sta
->flags
|= param
->u
.set_flags_sta
.flags_or
;
2636 sta
->flags
&= param
->u
.set_flags_sta
.flags_and
;
2638 spin_unlock_bh(&ap
->sta_table_lock
);
2647 static int prism2_hostapd_sta_clear_stats(struct ap_data
*ap
,
2648 struct prism2_hostapd_param
*param
)
2650 struct sta_info
*sta
;
2653 spin_lock_bh(&ap
->sta_table_lock
);
2654 sta
= ap_get_sta(ap
, param
->sta_addr
);
2656 sta
->rx_packets
= sta
->tx_packets
= 0;
2657 sta
->rx_bytes
= sta
->tx_bytes
= 0;
2658 for (rate
= 0; rate
< WLAN_RATE_COUNT
; rate
++) {
2659 sta
->tx_count
[rate
] = 0;
2660 sta
->rx_count
[rate
] = 0;
2663 spin_unlock_bh(&ap
->sta_table_lock
);
2672 int prism2_hostapd(struct ap_data
*ap
, struct prism2_hostapd_param
*param
)
2674 switch (param
->cmd
) {
2675 case PRISM2_HOSTAPD_FLUSH
:
2676 ap_control_kickall(ap
);
2678 case PRISM2_HOSTAPD_ADD_STA
:
2679 return prism2_hostapd_add_sta(ap
, param
);
2680 case PRISM2_HOSTAPD_REMOVE_STA
:
2681 return prism2_hostapd_remove_sta(ap
, param
);
2682 case PRISM2_HOSTAPD_GET_INFO_STA
:
2683 return prism2_hostapd_get_info_sta(ap
, param
);
2684 case PRISM2_HOSTAPD_SET_FLAGS_STA
:
2685 return prism2_hostapd_set_flags_sta(ap
, param
);
2686 case PRISM2_HOSTAPD_STA_CLEAR_STATS
:
2687 return prism2_hostapd_sta_clear_stats(ap
, param
);
2689 printk(KERN_WARNING
"prism2_hostapd: unknown cmd=%d\n",
2696 /* Update station info for host-based TX rate control and return current
2698 static int ap_update_sta_tx_rate(struct sta_info
*sta
, struct net_device
*dev
)
2700 int ret
= sta
->tx_rate
;
2701 struct hostap_interface
*iface
;
2702 local_info_t
*local
;
2704 iface
= netdev_priv(dev
);
2705 local
= iface
->local
;
2707 sta
->tx_count
[sta
->tx_rate_idx
]++;
2708 sta
->tx_since_last_failure
++;
2709 sta
->tx_consecutive_exc
= 0;
2710 if (sta
->tx_since_last_failure
>= WLAN_RATE_UPDATE_COUNT
&&
2711 sta
->tx_rate_idx
< sta
->tx_max_rate
) {
2712 /* use next higher rate */
2713 int old_rate
, new_rate
;
2714 old_rate
= new_rate
= sta
->tx_rate_idx
;
2715 while (new_rate
< sta
->tx_max_rate
) {
2717 if (ap_tx_rate_ok(new_rate
, sta
, local
)) {
2718 sta
->tx_rate_idx
= new_rate
;
2722 if (old_rate
!= sta
->tx_rate_idx
) {
2723 switch (sta
->tx_rate_idx
) {
2724 case 0: sta
->tx_rate
= 10; break;
2725 case 1: sta
->tx_rate
= 20; break;
2726 case 2: sta
->tx_rate
= 55; break;
2727 case 3: sta
->tx_rate
= 110; break;
2728 default: sta
->tx_rate
= 0; break;
2730 PDEBUG(DEBUG_AP
, "%s: STA %pM TX rate raised to %d\n",
2731 dev
->name
, sta
->addr
, sta
->tx_rate
);
2733 sta
->tx_since_last_failure
= 0;
2740 /* Called only from software IRQ. Called for each TX frame prior possible
2741 * encryption and transmit. */
2742 ap_tx_ret
hostap_handle_sta_tx(local_info_t
*local
, struct hostap_tx_data
*tx
)
2744 struct sta_info
*sta
= NULL
;
2745 struct sk_buff
*skb
= tx
->skb
;
2747 struct ieee80211_hdr
*hdr
;
2748 struct hostap_skb_tx_data
*meta
;
2750 meta
= (struct hostap_skb_tx_data
*) skb
->cb
;
2751 ret
= AP_TX_CONTINUE
;
2752 if (local
->ap
== NULL
|| skb
->len
< 10 ||
2753 meta
->iface
->type
== HOSTAP_INTERFACE_STA
)
2756 hdr
= (struct ieee80211_hdr
*) skb
->data
;
2758 if (hdr
->addr1
[0] & 0x01) {
2759 /* broadcast/multicast frame - no AP related processing */
2760 if (local
->ap
->num_sta
<= 0)
2765 /* unicast packet - check whether destination STA is associated */
2766 spin_lock(&local
->ap
->sta_table_lock
);
2767 sta
= ap_get_sta(local
->ap
, hdr
->addr1
);
2769 atomic_inc(&sta
->users
);
2770 spin_unlock(&local
->ap
->sta_table_lock
);
2772 if (local
->iw_mode
== IW_MODE_MASTER
&& sta
== NULL
&&
2773 !(meta
->flags
& HOSTAP_TX_FLAGS_WDS
) &&
2774 meta
->iface
->type
!= HOSTAP_INTERFACE_MASTER
&&
2775 meta
->iface
->type
!= HOSTAP_INTERFACE_AP
) {
2777 /* This can happen, e.g., when wlan0 is added to a bridge and
2778 * bridging code does not know which port is the correct target
2779 * for a unicast frame. In this case, the packet is send to all
2780 * ports of the bridge. Since this is a valid scenario, do not
2781 * print out any errors here. */
2782 if (net_ratelimit()) {
2783 printk(KERN_DEBUG
"AP: drop packet to non-associated "
2784 "STA %pM\n", hdr
->addr1
);
2787 local
->ap
->tx_drop_nonassoc
++;
2795 if (!(sta
->flags
& WLAN_STA_AUTHORIZED
))
2796 ret
= AP_TX_CONTINUE_NOT_AUTHORIZED
;
2798 /* Set tx_rate if using host-based TX rate control */
2799 if (!local
->fw_tx_rate_control
)
2800 local
->ap
->last_tx_rate
= meta
->rate
=
2801 ap_update_sta_tx_rate(sta
, local
->dev
);
2803 if (local
->iw_mode
!= IW_MODE_MASTER
)
2806 if (!(sta
->flags
& WLAN_STA_PS
))
2809 if (meta
->flags
& HOSTAP_TX_FLAGS_ADD_MOREDATA
) {
2810 /* indicate to STA that more frames follow */
2811 hdr
->frame_control
|=
2812 cpu_to_le16(IEEE80211_FCTL_MOREDATA
);
2815 if (meta
->flags
& HOSTAP_TX_FLAGS_BUFFERED_FRAME
) {
2816 /* packet was already buffered and now send due to
2817 * PS poll, so do not rebuffer it */
2821 if (skb_queue_len(&sta
->tx_buf
) >= STA_MAX_TX_BUFFER
) {
2822 PDEBUG(DEBUG_PS
, "%s: No more space in STA (%pM)'s"
2824 local
->dev
->name
, sta
->addr
);
2825 /* Make sure that TIM is set for the station (it might not be
2826 * after AP wlan hw reset). */
2827 /* FIX: should fix hw reset to restore bits based on STA
2829 hostap_set_tim(local
, sta
->aid
, 1);
2830 sta
->flags
|= WLAN_STA_TIM
;
2835 /* STA in PS mode, buffer frame for later delivery */
2836 set_tim
= skb_queue_empty(&sta
->tx_buf
);
2837 skb_queue_tail(&sta
->tx_buf
, skb
);
2838 /* FIX: could save RX time to skb and expire buffered frames after
2839 * some time if STA does not poll for them */
2842 if (sta
->flags
& WLAN_STA_TIM
)
2843 PDEBUG(DEBUG_PS2
, "Re-setting TIM for aid %d\n",
2845 hostap_set_tim(local
, sta
->aid
, 1);
2846 sta
->flags
|= WLAN_STA_TIM
;
2849 ret
= AP_TX_BUFFERED
;
2853 if (ret
== AP_TX_CONTINUE
||
2854 ret
== AP_TX_CONTINUE_NOT_AUTHORIZED
) {
2856 sta
->tx_bytes
+= skb
->len
;
2857 sta
->last_tx
= jiffies
;
2860 if ((ret
== AP_TX_CONTINUE
||
2861 ret
== AP_TX_CONTINUE_NOT_AUTHORIZED
) &&
2862 sta
->crypt
&& tx
->host_encrypt
) {
2863 tx
->crypt
= sta
->crypt
;
2864 tx
->sta_ptr
= sta
; /* hostap_handle_sta_release() will
2865 * be called to release sta info
2868 atomic_dec(&sta
->users
);
2875 void hostap_handle_sta_release(void *ptr
)
2877 struct sta_info
*sta
= ptr
;
2878 atomic_dec(&sta
->users
);
2882 /* Called only as a tasklet (software IRQ) */
2883 void hostap_handle_sta_tx_exc(local_info_t
*local
, struct sk_buff
*skb
)
2885 struct sta_info
*sta
;
2886 struct ieee80211_hdr
*hdr
;
2887 struct hostap_skb_tx_data
*meta
;
2889 hdr
= (struct ieee80211_hdr
*) skb
->data
;
2890 meta
= (struct hostap_skb_tx_data
*) skb
->cb
;
2892 spin_lock(&local
->ap
->sta_table_lock
);
2893 sta
= ap_get_sta(local
->ap
, hdr
->addr1
);
2895 spin_unlock(&local
->ap
->sta_table_lock
);
2896 PDEBUG(DEBUG_AP
, "%s: Could not find STA %pM"
2897 " for this TX error (@%lu)\n",
2898 local
->dev
->name
, hdr
->addr1
, jiffies
);
2902 sta
->tx_since_last_failure
= 0;
2903 sta
->tx_consecutive_exc
++;
2905 if (sta
->tx_consecutive_exc
>= WLAN_RATE_DECREASE_THRESHOLD
&&
2906 sta
->tx_rate_idx
> 0 && meta
->rate
<= sta
->tx_rate
) {
2907 /* use next lower rate */
2909 old
= rate
= sta
->tx_rate_idx
;
2912 if (ap_tx_rate_ok(rate
, sta
, local
)) {
2913 sta
->tx_rate_idx
= rate
;
2917 if (old
!= sta
->tx_rate_idx
) {
2918 switch (sta
->tx_rate_idx
) {
2919 case 0: sta
->tx_rate
= 10; break;
2920 case 1: sta
->tx_rate
= 20; break;
2921 case 2: sta
->tx_rate
= 55; break;
2922 case 3: sta
->tx_rate
= 110; break;
2923 default: sta
->tx_rate
= 0; break;
2926 "%s: STA %pM TX rate lowered to %d\n",
2927 local
->dev
->name
, sta
->addr
, sta
->tx_rate
);
2929 sta
->tx_consecutive_exc
= 0;
2931 spin_unlock(&local
->ap
->sta_table_lock
);
2935 static void hostap_update_sta_ps2(local_info_t
*local
, struct sta_info
*sta
,
2936 int pwrmgt
, int type
, int stype
)
2938 if (pwrmgt
&& !(sta
->flags
& WLAN_STA_PS
)) {
2939 sta
->flags
|= WLAN_STA_PS
;
2940 PDEBUG(DEBUG_PS2
, "STA %pM changed to use PS "
2941 "mode (type=0x%02X, stype=0x%02X)\n",
2942 sta
->addr
, type
>> 2, stype
>> 4);
2943 } else if (!pwrmgt
&& (sta
->flags
& WLAN_STA_PS
)) {
2944 sta
->flags
&= ~WLAN_STA_PS
;
2945 PDEBUG(DEBUG_PS2
, "STA %pM changed to not use "
2946 "PS mode (type=0x%02X, stype=0x%02X)\n",
2947 sta
->addr
, type
>> 2, stype
>> 4);
2948 if (type
!= IEEE80211_FTYPE_CTL
||
2949 stype
!= IEEE80211_STYPE_PSPOLL
)
2950 schedule_packet_send(local
, sta
);
2955 /* Called only as a tasklet (software IRQ). Called for each RX frame to update
2956 * STA power saving state. pwrmgt is a flag from 802.11 frame_control field. */
2957 int hostap_update_sta_ps(local_info_t
*local
, struct ieee80211_hdr
*hdr
)
2959 struct sta_info
*sta
;
2962 spin_lock(&local
->ap
->sta_table_lock
);
2963 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
2965 atomic_inc(&sta
->users
);
2966 spin_unlock(&local
->ap
->sta_table_lock
);
2971 fc
= le16_to_cpu(hdr
->frame_control
);
2972 hostap_update_sta_ps2(local
, sta
, fc
& IEEE80211_FCTL_PM
,
2973 fc
& IEEE80211_FCTL_FTYPE
,
2974 fc
& IEEE80211_FCTL_STYPE
);
2976 atomic_dec(&sta
->users
);
2981 /* Called only as a tasklet (software IRQ). Called for each RX frame after
2982 * getting RX header and payload from hardware. */
2983 ap_rx_ret
hostap_handle_sta_rx(local_info_t
*local
, struct net_device
*dev
,
2984 struct sk_buff
*skb
,
2985 struct hostap_80211_rx_status
*rx_stats
,
2989 struct sta_info
*sta
;
2990 u16 fc
, type
, stype
;
2991 struct ieee80211_hdr
*hdr
;
2993 if (local
->ap
== NULL
)
2994 return AP_RX_CONTINUE
;
2996 hdr
= (struct ieee80211_hdr
*) skb
->data
;
2998 fc
= le16_to_cpu(hdr
->frame_control
);
2999 type
= fc
& IEEE80211_FCTL_FTYPE
;
3000 stype
= fc
& IEEE80211_FCTL_STYPE
;
3002 spin_lock(&local
->ap
->sta_table_lock
);
3003 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
3005 atomic_inc(&sta
->users
);
3006 spin_unlock(&local
->ap
->sta_table_lock
);
3008 if (sta
&& !(sta
->flags
& WLAN_STA_AUTHORIZED
))
3009 ret
= AP_RX_CONTINUE_NOT_AUTHORIZED
;
3011 ret
= AP_RX_CONTINUE
;
3014 if (fc
& IEEE80211_FCTL_TODS
) {
3015 if (!wds
&& (sta
== NULL
|| !(sta
->flags
& WLAN_STA_ASSOC
))) {
3016 if (local
->hostapd
) {
3017 prism2_rx_80211(local
->apdev
, skb
, rx_stats
,
3018 PRISM2_RX_NON_ASSOC
);
3019 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3021 printk(KERN_DEBUG
"%s: dropped received packet"
3022 " from non-associated STA %pM"
3023 " (type=0x%02x, subtype=0x%02x)\n",
3024 dev
->name
, hdr
->addr2
,
3025 type
>> 2, stype
>> 4);
3026 hostap_rx(dev
, skb
, rx_stats
);
3027 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
3032 } else if (fc
& IEEE80211_FCTL_FROMDS
) {
3034 /* FromDS frame - not for us; probably
3035 * broadcast/multicast in another BSS - drop */
3036 if (ether_addr_equal(hdr
->addr1
, dev
->dev_addr
)) {
3037 printk(KERN_DEBUG
"Odd.. FromDS packet "
3038 "received with own BSSID\n");
3039 hostap_dump_rx_80211(dev
->name
, skb
, rx_stats
);
3044 } else if (stype
== IEEE80211_STYPE_NULLFUNC
&& sta
== NULL
&&
3045 ether_addr_equal(hdr
->addr1
, dev
->dev_addr
)) {
3047 if (local
->hostapd
) {
3048 prism2_rx_80211(local
->apdev
, skb
, rx_stats
,
3049 PRISM2_RX_NON_ASSOC
);
3050 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3052 /* At least Lucent f/w seems to send data::nullfunc
3053 * frames with no ToDS flag when the current AP returns
3054 * after being unavailable for some time. Speed up
3055 * re-association by informing the station about it not
3056 * being associated. */
3057 printk(KERN_DEBUG
"%s: rejected received nullfunc frame"
3058 " without ToDS from not associated STA %pM\n",
3059 dev
->name
, hdr
->addr2
);
3060 hostap_rx(dev
, skb
, rx_stats
);
3061 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
3065 } else if (stype
== IEEE80211_STYPE_NULLFUNC
) {
3066 /* At least Lucent cards seem to send periodic nullfunc
3067 * frames with ToDS. Let these through to update SQ
3068 * stats and PS state. Nullfunc frames do not contain
3069 * any data and they will be dropped below. */
3071 /* If BSSID (Addr3) is foreign, this frame is a normal
3072 * broadcast frame from an IBSS network. Drop it silently.
3073 * If BSSID is own, report the dropping of this frame. */
3074 if (ether_addr_equal(hdr
->addr3
, dev
->dev_addr
)) {
3075 printk(KERN_DEBUG
"%s: dropped received packet from %pM"
3076 " with no ToDS flag "
3077 "(type=0x%02x, subtype=0x%02x)\n", dev
->name
,
3078 hdr
->addr2
, type
>> 2, stype
>> 4);
3079 hostap_dump_rx_80211(dev
->name
, skb
, rx_stats
);
3086 hostap_update_sta_ps2(local
, sta
, fc
& IEEE80211_FCTL_PM
,
3090 sta
->rx_bytes
+= skb
->len
;
3091 sta
->last_rx
= jiffies
;
3094 if (local
->ap
->nullfunc_ack
&& stype
== IEEE80211_STYPE_NULLFUNC
&&
3095 fc
& IEEE80211_FCTL_TODS
) {
3096 if (local
->hostapd
) {
3097 prism2_rx_80211(local
->apdev
, skb
, rx_stats
,
3098 PRISM2_RX_NULLFUNC_ACK
);
3099 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3101 /* some STA f/w's seem to require control::ACK frame
3102 * for data::nullfunc, but Prism2 f/w 0.8.0 (at least
3103 * from Compaq) does not send this.. Try to generate
3104 * ACK for these frames from the host driver to make
3105 * power saving work with, e.g., Lucent WaveLAN f/w */
3106 hostap_rx(dev
, skb
, rx_stats
);
3107 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
3115 atomic_dec(&sta
->users
);
3121 /* Called only as a tasklet (software IRQ) */
3122 int hostap_handle_sta_crypto(local_info_t
*local
,
3123 struct ieee80211_hdr
*hdr
,
3124 struct lib80211_crypt_data
**crypt
,
3127 struct sta_info
*sta
;
3129 spin_lock(&local
->ap
->sta_table_lock
);
3130 sta
= ap_get_sta(local
->ap
, hdr
->addr2
);
3132 atomic_inc(&sta
->users
);
3133 spin_unlock(&local
->ap
->sta_table_lock
);
3139 *crypt
= sta
->crypt
;
3141 /* hostap_handle_sta_release() will be called to release STA
3144 atomic_dec(&sta
->users
);
3150 /* Called only as a tasklet (software IRQ) */
3151 int hostap_is_sta_assoc(struct ap_data
*ap
, u8
*sta_addr
)
3153 struct sta_info
*sta
;
3156 spin_lock(&ap
->sta_table_lock
);
3157 sta
= ap_get_sta(ap
, sta_addr
);
3158 if (sta
!= NULL
&& (sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
)
3160 spin_unlock(&ap
->sta_table_lock
);
3166 /* Called only as a tasklet (software IRQ) */
3167 int hostap_is_sta_authorized(struct ap_data
*ap
, u8
*sta_addr
)
3169 struct sta_info
*sta
;
3172 spin_lock(&ap
->sta_table_lock
);
3173 sta
= ap_get_sta(ap
, sta_addr
);
3174 if (sta
!= NULL
&& (sta
->flags
& WLAN_STA_ASSOC
) && !sta
->ap
&&
3175 ((sta
->flags
& WLAN_STA_AUTHORIZED
) ||
3176 ap
->local
->ieee_802_1x
== 0))
3178 spin_unlock(&ap
->sta_table_lock
);
3184 /* Called only as a tasklet (software IRQ) */
3185 int hostap_add_sta(struct ap_data
*ap
, u8
*sta_addr
)
3187 struct sta_info
*sta
;
3193 spin_lock(&ap
->sta_table_lock
);
3194 sta
= ap_get_sta(ap
, sta_addr
);
3197 spin_unlock(&ap
->sta_table_lock
);
3200 sta
= ap_add_sta(ap
, sta_addr
);
3203 sta
->flags
= WLAN_STA_AUTH
| WLAN_STA_ASSOC
;
3205 memset(sta
->supported_rates
, 0, sizeof(sta
->supported_rates
));
3206 /* No way of knowing which rates are supported since we did not
3207 * get supported rates element from beacon/assoc req. Assume
3208 * that remote end supports all 802.11b rates. */
3209 sta
->supported_rates
[0] = 0x82;
3210 sta
->supported_rates
[1] = 0x84;
3211 sta
->supported_rates
[2] = 0x0b;
3212 sta
->supported_rates
[3] = 0x16;
3213 sta
->tx_supp_rates
= WLAN_RATE_1M
| WLAN_RATE_2M
|
3214 WLAN_RATE_5M5
| WLAN_RATE_11M
;
3216 sta
->tx_max_rate
= sta
->tx_rate_idx
= 3;
3223 /* Called only as a tasklet (software IRQ) */
3224 int hostap_update_rx_stats(struct ap_data
*ap
,
3225 struct ieee80211_hdr
*hdr
,
3226 struct hostap_80211_rx_status
*rx_stats
)
3228 struct sta_info
*sta
;
3233 spin_lock(&ap
->sta_table_lock
);
3234 sta
= ap_get_sta(ap
, hdr
->addr2
);
3236 sta
->last_rx_silence
= rx_stats
->noise
;
3237 sta
->last_rx_signal
= rx_stats
->signal
;
3238 sta
->last_rx_rate
= rx_stats
->rate
;
3239 sta
->last_rx_updated
= IW_QUAL_ALL_UPDATED
| IW_QUAL_DBM
;
3240 if (rx_stats
->rate
== 10)
3242 else if (rx_stats
->rate
== 20)
3244 else if (rx_stats
->rate
== 55)
3246 else if (rx_stats
->rate
== 110)
3249 spin_unlock(&ap
->sta_table_lock
);
3251 return sta
? 0 : -1;
3255 void hostap_update_rates(local_info_t
*local
)
3257 struct sta_info
*sta
;
3258 struct ap_data
*ap
= local
->ap
;
3263 spin_lock_bh(&ap
->sta_table_lock
);
3264 list_for_each_entry(sta
, &ap
->sta_list
, list
) {
3265 prism2_check_tx_rates(sta
);
3267 spin_unlock_bh(&ap
->sta_table_lock
);
3271 void * ap_crypt_get_ptrs(struct ap_data
*ap
, u8
*addr
, int permanent
,
3272 struct lib80211_crypt_data
***crypt
)
3274 struct sta_info
*sta
;
3276 spin_lock_bh(&ap
->sta_table_lock
);
3277 sta
= ap_get_sta(ap
, addr
);
3279 atomic_inc(&sta
->users
);
3280 spin_unlock_bh(&ap
->sta_table_lock
);
3282 if (!sta
&& permanent
)
3283 sta
= ap_add_sta(ap
, addr
);
3289 sta
->flags
|= WLAN_STA_PERM
;
3291 *crypt
= &sta
->crypt
;
3297 void hostap_add_wds_links(local_info_t
*local
)
3299 struct ap_data
*ap
= local
->ap
;
3300 struct sta_info
*sta
;
3302 spin_lock_bh(&ap
->sta_table_lock
);
3303 list_for_each_entry(sta
, &ap
->sta_list
, list
) {
3305 hostap_wds_link_oper(local
, sta
->addr
, WDS_ADD
);
3307 spin_unlock_bh(&ap
->sta_table_lock
);
3309 schedule_work(&local
->ap
->wds_oper_queue
);
3313 void hostap_wds_link_oper(local_info_t
*local
, u8
*addr
, wds_oper_type type
)
3315 struct wds_oper_data
*entry
;
3317 entry
= kmalloc(sizeof(*entry
), GFP_ATOMIC
);
3320 memcpy(entry
->addr
, addr
, ETH_ALEN
);
3322 spin_lock_bh(&local
->lock
);
3323 entry
->next
= local
->ap
->wds_oper_entries
;
3324 local
->ap
->wds_oper_entries
= entry
;
3325 spin_unlock_bh(&local
->lock
);
3327 schedule_work(&local
->ap
->wds_oper_queue
);
3331 EXPORT_SYMBOL(hostap_init_data
);
3332 EXPORT_SYMBOL(hostap_init_ap_proc
);
3333 EXPORT_SYMBOL(hostap_free_data
);
3334 EXPORT_SYMBOL(hostap_check_sta_fw_version
);
3335 EXPORT_SYMBOL(hostap_handle_sta_tx_exc
);
3336 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3337 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */