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>
22 #include <linux/if_arp.h>
23 #include <linux/slab.h>
25 #include "hostap_wlan.h"
27 #include "hostap_ap.h"
29 static int other_ap_policy[MAX_PARM_DEVICES] = { AP_OTHER_AP_SKIP_ALL,
31 module_param_array(other_ap_policy, int, NULL, 0444);
32 MODULE_PARM_DESC(other_ap_policy, "Other AP beacon monitoring policy (0-3)");
34 static int ap_max_inactivity[MAX_PARM_DEVICES] = { AP_MAX_INACTIVITY_SEC,
36 module_param_array(ap_max_inactivity, int, NULL, 0444);
37 MODULE_PARM_DESC(ap_max_inactivity, "AP timeout (in seconds) for station "
40 static int ap_bridge_packets[MAX_PARM_DEVICES] = { 1, DEF_INTS };
41 module_param_array(ap_bridge_packets, int, NULL, 0444);
42 MODULE_PARM_DESC(ap_bridge_packets, "Bridge packets directly between "
45 static int autom_ap_wds[MAX_PARM_DEVICES] = { 0, DEF_INTS };
46 module_param_array(autom_ap_wds, int, NULL, 0444);
47 MODULE_PARM_DESC(autom_ap_wds, "Add WDS connections to other APs "
51 static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta);
52 static void hostap_event_expired_sta(struct net_device *dev,
53 struct sta_info *sta);
54 static void handle_add_proc_queue(struct work_struct *work);
56 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
57 static void handle_wds_oper_queue(struct work_struct *work);
58 static void prism2_send_mgmt(struct net_device *dev,
59 u16 type_subtype, char *body,
60 int body_len, u8 *addr, u16 tx_cb_idx);
61 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
64 #ifndef PRISM2_NO_PROCFS_DEBUG
65 static int ap_debug_proc_read(char *page, char **start, off_t off,
66 int count, int *eof, void *data)
69 struct ap_data *ap = (struct ap_data *) data;
76 p += sprintf(p, "BridgedUnicastFrames=%u\n", ap->bridged_unicast);
77 p += sprintf(p, "BridgedMulticastFrames=%u\n", ap->bridged_multicast);
78 p += sprintf(p, "max_inactivity=%u\n", ap->max_inactivity / HZ);
79 p += sprintf(p, "bridge_packets=%u\n", ap->bridge_packets);
80 p += sprintf(p, "nullfunc_ack=%u\n", ap->nullfunc_ack);
81 p += sprintf(p, "autom_ap_wds=%u\n", ap->autom_ap_wds);
82 p += sprintf(p, "auth_algs=%u\n", ap->local->auth_algs);
83 p += sprintf(p, "tx_drop_nonassoc=%u\n", ap->tx_drop_nonassoc);
87 #endif /* PRISM2_NO_PROCFS_DEBUG */
90 static void ap_sta_hash_add(struct ap_data *ap, struct sta_info *sta)
92 sta->hnext = ap->sta_hash[STA_HASH(sta->addr)];
93 ap->sta_hash[STA_HASH(sta->addr)] = sta;
96 static void ap_sta_hash_del(struct ap_data *ap, struct sta_info *sta)
100 s = ap->sta_hash[STA_HASH(sta->addr)];
101 if (s == NULL) return;
102 if (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) {
103 ap->sta_hash[STA_HASH(sta->addr)] = s->hnext;
107 while (s->hnext != NULL && memcmp(s->hnext->addr, sta->addr, ETH_ALEN)
110 if (s->hnext != NULL)
111 s->hnext = s->hnext->hnext;
113 printk("AP: could not remove STA %pM from hash table\n",
117 static void ap_free_sta(struct ap_data *ap, struct sta_info *sta)
119 if (sta->ap && sta->local)
120 hostap_event_expired_sta(sta->local->dev, sta);
122 if (ap->proc != NULL) {
124 sprintf(name, "%pM", sta->addr);
125 remove_proc_entry(name, ap->proc);
129 sta->crypt->ops->deinit(sta->crypt->priv);
134 skb_queue_purge(&sta->tx_buf);
137 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
139 ap->sta_aid[sta->aid - 1] = NULL;
141 if (!sta->ap && sta->u.sta.challenge)
142 kfree(sta->u.sta.challenge);
143 del_timer(&sta->timer);
144 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
150 static void hostap_set_tim(local_info_t *local, int aid, int set)
152 if (local->func->set_tim)
153 local->func->set_tim(local->dev, aid, set);
157 static void hostap_event_new_sta(struct net_device *dev, struct sta_info *sta)
159 union iwreq_data wrqu;
160 memset(&wrqu, 0, sizeof(wrqu));
161 memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN);
162 wrqu.addr.sa_family = ARPHRD_ETHER;
163 wireless_send_event(dev, IWEVREGISTERED, &wrqu, NULL);
167 static void hostap_event_expired_sta(struct net_device *dev,
168 struct sta_info *sta)
170 union iwreq_data wrqu;
171 memset(&wrqu, 0, sizeof(wrqu));
172 memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN);
173 wrqu.addr.sa_family = ARPHRD_ETHER;
174 wireless_send_event(dev, IWEVEXPIRED, &wrqu, NULL);
178 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
180 static void ap_handle_timer(unsigned long data)
182 struct sta_info *sta = (struct sta_info *) data;
185 unsigned long next_time = 0;
188 if (sta == NULL || sta->local == NULL || sta->local->ap == NULL) {
189 PDEBUG(DEBUG_AP, "ap_handle_timer() called with NULL data\n");
195 was_assoc = sta->flags & WLAN_STA_ASSOC;
197 if (atomic_read(&sta->users) != 0)
198 next_time = jiffies + HZ;
199 else if ((sta->flags & WLAN_STA_PERM) && !(sta->flags & WLAN_STA_AUTH))
200 next_time = jiffies + ap->max_inactivity;
202 if (time_before(jiffies, sta->last_rx + ap->max_inactivity)) {
203 /* station activity detected; reset timeout state */
204 sta->timeout_next = STA_NULLFUNC;
205 next_time = sta->last_rx + ap->max_inactivity;
206 } else if (sta->timeout_next == STA_DISASSOC &&
207 !(sta->flags & WLAN_STA_PENDING_POLL)) {
208 /* STA ACKed data nullfunc frame poll */
209 sta->timeout_next = STA_NULLFUNC;
210 next_time = jiffies + ap->max_inactivity;
214 sta->timer.expires = next_time;
215 add_timer(&sta->timer);
220 sta->timeout_next = STA_DEAUTH;
222 if (sta->timeout_next == STA_DEAUTH && !(sta->flags & WLAN_STA_PERM)) {
223 spin_lock(&ap->sta_table_lock);
224 ap_sta_hash_del(ap, sta);
225 list_del(&sta->list);
226 spin_unlock(&ap->sta_table_lock);
227 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
228 } else if (sta->timeout_next == STA_DISASSOC)
229 sta->flags &= ~WLAN_STA_ASSOC;
231 if (was_assoc && !(sta->flags & WLAN_STA_ASSOC) && !sta->ap)
232 hostap_event_expired_sta(local->dev, sta);
234 if (sta->timeout_next == STA_DEAUTH && sta->aid > 0 &&
235 !skb_queue_empty(&sta->tx_buf)) {
236 hostap_set_tim(local, sta->aid, 0);
237 sta->flags &= ~WLAN_STA_TIM;
241 if (ap->autom_ap_wds) {
242 PDEBUG(DEBUG_AP, "%s: removing automatic WDS "
243 "connection to AP %pM\n",
244 local->dev->name, sta->addr);
245 hostap_wds_link_oper(local, sta->addr, WDS_DEL);
247 } else if (sta->timeout_next == STA_NULLFUNC) {
248 /* send data frame to poll STA and check whether this frame
250 /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but
251 * it is apparently not retried so TX Exc events are not
253 sta->flags |= WLAN_STA_PENDING_POLL;
254 prism2_send_mgmt(local->dev, IEEE80211_FTYPE_DATA |
255 IEEE80211_STYPE_DATA, NULL, 0,
256 sta->addr, ap->tx_callback_poll);
258 int deauth = sta->timeout_next == STA_DEAUTH;
260 PDEBUG(DEBUG_AP, "%s: sending %s info to STA %pM"
261 "(last=%lu, jiffies=%lu)\n",
263 deauth ? "deauthentication" : "disassociation",
264 sta->addr, sta->last_rx, jiffies);
266 resp = cpu_to_le16(deauth ? WLAN_REASON_PREV_AUTH_NOT_VALID :
267 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
268 prism2_send_mgmt(local->dev, IEEE80211_FTYPE_MGMT |
269 (deauth ? IEEE80211_STYPE_DEAUTH :
270 IEEE80211_STYPE_DISASSOC),
271 (char *) &resp, 2, sta->addr, 0);
274 if (sta->timeout_next == STA_DEAUTH) {
275 if (sta->flags & WLAN_STA_PERM) {
276 PDEBUG(DEBUG_AP, "%s: STA %pM"
277 " would have been removed, "
278 "but it has 'perm' flag\n",
279 local->dev->name, sta->addr);
281 ap_free_sta(ap, sta);
285 if (sta->timeout_next == STA_NULLFUNC) {
286 sta->timeout_next = STA_DISASSOC;
287 sta->timer.expires = jiffies + AP_DISASSOC_DELAY;
289 sta->timeout_next = STA_DEAUTH;
290 sta->timer.expires = jiffies + AP_DEAUTH_DELAY;
293 add_timer(&sta->timer);
297 void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap,
304 PDEBUG(DEBUG_AP, "%s: Deauthenticate all stations\n", dev->name);
305 memset(addr, 0xff, ETH_ALEN);
307 resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
309 /* deauth message sent; try to resend it few times; the message is
310 * broadcast, so it may be delayed until next DTIM; there is not much
311 * else we can do at this point since the driver is going to be shut
313 for (i = 0; i < 5; i++) {
314 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT |
315 IEEE80211_STYPE_DEAUTH,
316 (char *) &resp, 2, addr, 0);
318 if (!resend || ap->num_sta <= 0)
326 static int ap_control_proc_read(char *page, char **start, off_t off,
327 int count, int *eof, void *data)
330 struct ap_data *ap = (struct ap_data *) data;
332 struct mac_entry *entry;
339 switch (ap->mac_restrictions.policy) {
340 case MAC_POLICY_OPEN:
343 case MAC_POLICY_ALLOW:
344 policy_txt = "allow";
346 case MAC_POLICY_DENY:
350 policy_txt = "unknown";
353 p += sprintf(p, "MAC policy: %s\n", policy_txt);
354 p += sprintf(p, "MAC entries: %u\n", ap->mac_restrictions.entries);
355 p += sprintf(p, "MAC list:\n");
356 spin_lock_bh(&ap->mac_restrictions.lock);
357 list_for_each_entry(entry, &ap->mac_restrictions.mac_list, list) {
358 if (p - page > PAGE_SIZE - 80) {
359 p += sprintf(p, "All entries did not fit one page.\n");
363 p += sprintf(p, "%pM\n", entry->addr);
365 spin_unlock_bh(&ap->mac_restrictions.lock);
371 int ap_control_add_mac(struct mac_restrictions *mac_restrictions, u8 *mac)
373 struct mac_entry *entry;
375 entry = kmalloc(sizeof(struct mac_entry), GFP_KERNEL);
379 memcpy(entry->addr, mac, ETH_ALEN);
381 spin_lock_bh(&mac_restrictions->lock);
382 list_add_tail(&entry->list, &mac_restrictions->mac_list);
383 mac_restrictions->entries++;
384 spin_unlock_bh(&mac_restrictions->lock);
390 int ap_control_del_mac(struct mac_restrictions *mac_restrictions, u8 *mac)
392 struct list_head *ptr;
393 struct mac_entry *entry;
395 spin_lock_bh(&mac_restrictions->lock);
396 for (ptr = mac_restrictions->mac_list.next;
397 ptr != &mac_restrictions->mac_list; ptr = ptr->next) {
398 entry = list_entry(ptr, struct mac_entry, list);
400 if (memcmp(entry->addr, mac, ETH_ALEN) == 0) {
403 mac_restrictions->entries--;
404 spin_unlock_bh(&mac_restrictions->lock);
408 spin_unlock_bh(&mac_restrictions->lock);
413 static int ap_control_mac_deny(struct mac_restrictions *mac_restrictions,
416 struct mac_entry *entry;
419 if (mac_restrictions->policy == MAC_POLICY_OPEN)
422 spin_lock_bh(&mac_restrictions->lock);
423 list_for_each_entry(entry, &mac_restrictions->mac_list, list) {
424 if (memcmp(entry->addr, mac, ETH_ALEN) == 0) {
429 spin_unlock_bh(&mac_restrictions->lock);
431 if (mac_restrictions->policy == MAC_POLICY_ALLOW)
438 void ap_control_flush_macs(struct mac_restrictions *mac_restrictions)
440 struct list_head *ptr, *n;
441 struct mac_entry *entry;
443 if (mac_restrictions->entries == 0)
446 spin_lock_bh(&mac_restrictions->lock);
447 for (ptr = mac_restrictions->mac_list.next, n = ptr->next;
448 ptr != &mac_restrictions->mac_list;
449 ptr = n, n = ptr->next) {
450 entry = list_entry(ptr, struct mac_entry, list);
454 mac_restrictions->entries = 0;
455 spin_unlock_bh(&mac_restrictions->lock);
459 int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev, u8 *mac)
461 struct sta_info *sta;
464 spin_lock_bh(&ap->sta_table_lock);
465 sta = ap_get_sta(ap, mac);
467 ap_sta_hash_del(ap, sta);
468 list_del(&sta->list);
470 spin_unlock_bh(&ap->sta_table_lock);
475 resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
476 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH,
477 (char *) &resp, 2, sta->addr, 0);
479 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap)
480 hostap_event_expired_sta(dev, sta);
482 ap_free_sta(ap, sta);
487 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
490 void ap_control_kickall(struct ap_data *ap)
492 struct list_head *ptr, *n;
493 struct sta_info *sta;
495 spin_lock_bh(&ap->sta_table_lock);
496 for (ptr = ap->sta_list.next, n = ptr->next; ptr != &ap->sta_list;
497 ptr = n, n = ptr->next) {
498 sta = list_entry(ptr, struct sta_info, list);
499 ap_sta_hash_del(ap, sta);
500 list_del(&sta->list);
501 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
502 hostap_event_expired_sta(sta->local->dev, sta);
503 ap_free_sta(ap, sta);
505 spin_unlock_bh(&ap->sta_table_lock);
509 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
511 #define PROC_LIMIT (PAGE_SIZE - 80)
513 static int prism2_ap_proc_read(char *page, char **start, off_t off,
514 int count, int *eof, void *data)
517 struct ap_data *ap = (struct ap_data *) data;
518 struct sta_info *sta;
521 if (off > PROC_LIMIT) {
526 p += sprintf(p, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n");
527 spin_lock_bh(&ap->sta_table_lock);
528 list_for_each_entry(sta, &ap->sta_list, list) {
532 p += sprintf(p, "%pM %d %d %d %d '",
534 sta->u.ap.channel, sta->last_rx_signal,
535 sta->last_rx_silence, sta->last_rx_rate);
536 for (i = 0; i < sta->u.ap.ssid_len; i++)
537 p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 &&
538 sta->u.ap.ssid[i] < 127) ?
541 p += sprintf(p, "'");
542 if (sta->capability & WLAN_CAPABILITY_ESS)
543 p += sprintf(p, " [ESS]");
544 if (sta->capability & WLAN_CAPABILITY_IBSS)
545 p += sprintf(p, " [IBSS]");
546 if (sta->capability & WLAN_CAPABILITY_PRIVACY)
547 p += sprintf(p, " [WEP]");
548 p += sprintf(p, "\n");
550 if ((p - page) > PROC_LIMIT) {
551 printk(KERN_DEBUG "hostap: ap proc did not fit\n");
555 spin_unlock_bh(&ap->sta_table_lock);
557 if ((p - page) <= off) {
564 return (p - page - off);
566 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
569 void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver)
574 if (sta_fw_ver == PRISM2_FW_VER(0,8,0)) {
575 PDEBUG(DEBUG_AP, "Using data::nullfunc ACK workaround - "
576 "firmware upgrade recommended\n");
577 ap->nullfunc_ack = 1;
579 ap->nullfunc_ack = 0;
581 if (sta_fw_ver == PRISM2_FW_VER(1,4,2)) {
582 printk(KERN_WARNING "%s: Warning: secondary station firmware "
583 "version 1.4.2 does not seem to work in Host AP mode\n",
584 ap->local->dev->name);
589 /* Called only as a tasklet (software IRQ) */
590 static void hostap_ap_tx_cb(struct sk_buff *skb, int ok, void *data)
592 struct ap_data *ap = data;
593 struct ieee80211_hdr *hdr;
595 if (!ap->local->hostapd || !ap->local->apdev) {
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 hdr = (struct ieee80211_hdr *) skb->data;
604 hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_VERS);
605 hdr->frame_control |= cpu_to_le16(ok ? BIT(1) : BIT(0));
607 skb->dev = ap->local->apdev;
608 skb_pull(skb, hostap_80211_get_hdrlen(hdr->frame_control));
609 skb->pkt_type = PACKET_OTHERHOST;
610 skb->protocol = cpu_to_be16(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 *hdr;
623 u16 auth_alg, auth_transaction, status;
625 struct sta_info *sta = NULL;
628 if (ap->local->hostapd) {
633 hdr = (struct ieee80211_hdr *) skb->data;
634 if (!ieee80211_is_auth(hdr->frame_control) ||
635 skb->len < IEEE80211_MGMT_HDR_LEN + 6) {
636 printk(KERN_DEBUG "%s: hostap_ap_tx_cb_auth received invalid "
637 "frame\n", dev->name);
642 pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
643 auth_alg = le16_to_cpu(*pos++);
644 auth_transaction = le16_to_cpu(*pos++);
645 status = le16_to_cpu(*pos++);
648 txt = "frame was not ACKed";
652 spin_lock(&ap->sta_table_lock);
653 sta = ap_get_sta(ap, hdr->addr1);
655 atomic_inc(&sta->users);
656 spin_unlock(&ap->sta_table_lock);
659 txt = "STA not found";
663 if (status == WLAN_STATUS_SUCCESS &&
664 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
665 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
666 txt = "STA authenticated";
667 sta->flags |= WLAN_STA_AUTH;
668 sta->last_auth = jiffies;
669 } else if (status != WLAN_STATUS_SUCCESS)
670 txt = "authentication failed";
674 atomic_dec(&sta->users);
676 PDEBUG(DEBUG_AP, "%s: %pM auth_cb - alg=%d "
677 "trans#=%d status=%d - %s\n",
678 dev->name, hdr->addr1,
679 auth_alg, auth_transaction, status, txt);
685 /* Called only as a tasklet (software IRQ) */
686 static void hostap_ap_tx_cb_assoc(struct sk_buff *skb, int ok, void *data)
688 struct ap_data *ap = data;
689 struct net_device *dev = ap->local->dev;
690 struct ieee80211_hdr *hdr;
693 struct sta_info *sta = NULL;
696 if (ap->local->hostapd) {
701 hdr = (struct ieee80211_hdr *) skb->data;
702 fc = le16_to_cpu(hdr->frame_control);
703 if ((!ieee80211_is_assoc_resp(hdr->frame_control) &&
704 !ieee80211_is_reassoc_resp(hdr->frame_control)) ||
705 skb->len < IEEE80211_MGMT_HDR_LEN + 4) {
706 printk(KERN_DEBUG "%s: hostap_ap_tx_cb_assoc received invalid "
707 "frame\n", dev->name);
713 txt = "frame was not ACKed";
717 spin_lock(&ap->sta_table_lock);
718 sta = ap_get_sta(ap, hdr->addr1);
720 atomic_inc(&sta->users);
721 spin_unlock(&ap->sta_table_lock);
724 txt = "STA not found";
728 pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
730 status = le16_to_cpu(*pos++);
731 if (status == WLAN_STATUS_SUCCESS) {
732 if (!(sta->flags & WLAN_STA_ASSOC))
733 hostap_event_new_sta(dev, sta);
734 txt = "STA associated";
735 sta->flags |= WLAN_STA_ASSOC;
736 sta->last_assoc = jiffies;
738 txt = "association failed";
742 atomic_dec(&sta->users);
744 PDEBUG(DEBUG_AP, "%s: %pM assoc_cb - %s\n",
745 dev->name, hdr->addr1, txt);
750 /* Called only as a tasklet (software IRQ); TX callback for poll frames used
751 * in verifying whether the STA is still present. */
752 static void hostap_ap_tx_cb_poll(struct sk_buff *skb, int ok, void *data)
754 struct ap_data *ap = data;
755 struct ieee80211_hdr *hdr;
756 struct sta_info *sta;
760 hdr = (struct ieee80211_hdr *) skb->data;
762 spin_lock(&ap->sta_table_lock);
763 sta = ap_get_sta(ap, hdr->addr1);
765 sta->flags &= ~WLAN_STA_PENDING_POLL;
766 spin_unlock(&ap->sta_table_lock);
769 "%s: STA %pM did not ACK activity poll frame\n",
770 ap->local->dev->name, hdr->addr1);
776 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
779 void hostap_init_data(local_info_t *local)
781 struct ap_data *ap = local->ap;
784 printk(KERN_WARNING "hostap_init_data: ap == NULL\n");
787 memset(ap, 0, sizeof(struct ap_data));
790 ap->ap_policy = GET_INT_PARM(other_ap_policy, local->card_idx);
791 ap->bridge_packets = GET_INT_PARM(ap_bridge_packets, local->card_idx);
793 GET_INT_PARM(ap_max_inactivity, local->card_idx) * HZ;
794 ap->autom_ap_wds = GET_INT_PARM(autom_ap_wds, local->card_idx);
796 spin_lock_init(&ap->sta_table_lock);
797 INIT_LIST_HEAD(&ap->sta_list);
799 /* Initialize task queue structure for AP management */
800 INIT_WORK(&local->ap->add_sta_proc_queue, handle_add_proc_queue);
802 ap->tx_callback_idx =
803 hostap_tx_callback_register(local, hostap_ap_tx_cb, ap);
804 if (ap->tx_callback_idx == 0)
805 printk(KERN_WARNING "%s: failed to register TX callback for "
806 "AP\n", local->dev->name);
807 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
808 INIT_WORK(&local->ap->wds_oper_queue, handle_wds_oper_queue);
810 ap->tx_callback_auth =
811 hostap_tx_callback_register(local, hostap_ap_tx_cb_auth, ap);
812 ap->tx_callback_assoc =
813 hostap_tx_callback_register(local, hostap_ap_tx_cb_assoc, ap);
814 ap->tx_callback_poll =
815 hostap_tx_callback_register(local, hostap_ap_tx_cb_poll, ap);
816 if (ap->tx_callback_auth == 0 || ap->tx_callback_assoc == 0 ||
817 ap->tx_callback_poll == 0)
818 printk(KERN_WARNING "%s: failed to register TX callback for "
819 "AP\n", local->dev->name);
821 spin_lock_init(&ap->mac_restrictions.lock);
822 INIT_LIST_HEAD(&ap->mac_restrictions.mac_list);
823 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
829 void hostap_init_ap_proc(local_info_t *local)
831 struct ap_data *ap = local->ap;
833 ap->proc = local->proc;
834 if (ap->proc == NULL)
837 #ifndef PRISM2_NO_PROCFS_DEBUG
838 create_proc_read_entry("ap_debug", 0, ap->proc,
839 ap_debug_proc_read, ap);
840 #endif /* PRISM2_NO_PROCFS_DEBUG */
842 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
843 create_proc_read_entry("ap_control", 0, ap->proc,
844 ap_control_proc_read, ap);
845 create_proc_read_entry("ap", 0, ap->proc,
846 prism2_ap_proc_read, ap);
847 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
852 void hostap_free_data(struct ap_data *ap)
854 struct sta_info *n, *sta;
856 if (ap == NULL || !ap->initialized) {
857 printk(KERN_DEBUG "hostap_free_data: ap has not yet been "
858 "initialized - skip resource freeing\n");
862 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
864 ap->crypt->deinit(ap->crypt_priv);
865 ap->crypt = ap->crypt_priv = NULL;
866 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
868 list_for_each_entry_safe(sta, n, &ap->sta_list, list) {
869 ap_sta_hash_del(ap, sta);
870 list_del(&sta->list);
871 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
872 hostap_event_expired_sta(sta->local->dev, sta);
873 ap_free_sta(ap, sta);
876 #ifndef PRISM2_NO_PROCFS_DEBUG
877 if (ap->proc != NULL) {
878 remove_proc_entry("ap_debug", ap->proc);
880 #endif /* PRISM2_NO_PROCFS_DEBUG */
882 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
883 if (ap->proc != NULL) {
884 remove_proc_entry("ap", ap->proc);
885 remove_proc_entry("ap_control", ap->proc);
887 ap_control_flush_macs(&ap->mac_restrictions);
888 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
894 /* caller should have mutex for AP STA list handling */
895 static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta)
899 s = ap->sta_hash[STA_HASH(sta)];
900 while (s != NULL && memcmp(s->addr, sta, ETH_ALEN) != 0)
906 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
908 /* Called from timer handler and from scheduled AP queue handlers */
909 static void prism2_send_mgmt(struct net_device *dev,
910 u16 type_subtype, char *body,
911 int body_len, u8 *addr, u16 tx_cb_idx)
913 struct hostap_interface *iface;
915 struct ieee80211_hdr *hdr;
918 struct hostap_skb_tx_data *meta;
921 iface = netdev_priv(dev);
922 local = iface->local;
923 dev = local->dev; /* always use master radio device */
924 iface = netdev_priv(dev);
926 if (!(dev->flags & IFF_UP)) {
927 PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt - device is not UP - "
928 "cannot send frame\n", dev->name);
932 skb = dev_alloc_skb(sizeof(*hdr) + body_len);
934 PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt failed to allocate "
940 hdrlen = hostap_80211_get_hdrlen(cpu_to_le16(type_subtype));
941 hdr = (struct ieee80211_hdr *) skb_put(skb, hdrlen);
943 memcpy(skb_put(skb, body_len), body, body_len);
945 memset(hdr, 0, hdrlen);
947 /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11
948 * tx_control instead of using local->tx_control */
951 memcpy(hdr->addr1, addr, ETH_ALEN); /* DA / RA */
952 if (ieee80211_is_data(hdr->frame_control)) {
953 fc |= IEEE80211_FCTL_FROMDS;
954 memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* BSSID */
955 memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* SA */
956 } else if (ieee80211_is_ctl(hdr->frame_control)) {
957 /* control:ACK does not have addr2 or addr3 */
958 memset(hdr->addr2, 0, ETH_ALEN);
959 memset(hdr->addr3, 0, ETH_ALEN);
961 memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* SA */
962 memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* BSSID */
965 hdr->frame_control = cpu_to_le16(fc);
967 meta = (struct hostap_skb_tx_data *) skb->cb;
968 memset(meta, 0, sizeof(*meta));
969 meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
971 meta->tx_cb_idx = tx_cb_idx;
974 skb_reset_mac_header(skb);
975 skb_reset_network_header(skb);
978 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
981 static int prism2_sta_proc_read(char *page, char **start, off_t off,
982 int count, int *eof, void *data)
985 struct sta_info *sta = (struct sta_info *) data;
988 /* FIX: possible race condition.. the STA data could have just expired,
989 * but proc entry was still here so that the read could have started;
990 * some locking should be done here.. */
997 p += sprintf(p, "%s=%pM\nusers=%d\naid=%d\n"
998 "flags=0x%04x%s%s%s%s%s%s%s\n"
999 "capability=0x%02x\nlisten_interval=%d\nsupported_rates=",
1000 sta->ap ? "AP" : "STA",
1001 sta->addr, atomic_read(&sta->users), sta->aid,
1003 sta->flags & WLAN_STA_AUTH ? " AUTH" : "",
1004 sta->flags & WLAN_STA_ASSOC ? " ASSOC" : "",
1005 sta->flags & WLAN_STA_PS ? " PS" : "",
1006 sta->flags & WLAN_STA_TIM ? " TIM" : "",
1007 sta->flags & WLAN_STA_PERM ? " PERM" : "",
1008 sta->flags & WLAN_STA_AUTHORIZED ? " AUTHORIZED" : "",
1009 sta->flags & WLAN_STA_PENDING_POLL ? " POLL" : "",
1010 sta->capability, sta->listen_interval);
1011 /* supported_rates: 500 kbit/s units with msb ignored */
1012 for (i = 0; i < sizeof(sta->supported_rates); i++)
1013 if (sta->supported_rates[i] != 0)
1014 p += sprintf(p, "%d%sMbps ",
1015 (sta->supported_rates[i] & 0x7f) / 2,
1016 sta->supported_rates[i] & 1 ? ".5" : "");
1017 p += sprintf(p, "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n"
1018 "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n"
1020 "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n"
1021 "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n"
1022 "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n"
1024 "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n",
1025 jiffies, sta->last_auth, sta->last_assoc, sta->last_rx,
1027 sta->rx_packets, sta->tx_packets, sta->rx_bytes,
1028 sta->tx_bytes, skb_queue_len(&sta->tx_buf),
1029 sta->last_rx_silence,
1030 sta->last_rx_signal, sta->last_rx_rate / 10,
1031 sta->last_rx_rate % 10 ? ".5" : "",
1032 sta->tx_rate, sta->tx_count[0], sta->tx_count[1],
1033 sta->tx_count[2], sta->tx_count[3], sta->rx_count[0],
1034 sta->rx_count[1], sta->rx_count[2], sta->rx_count[3]);
1035 if (sta->crypt && sta->crypt->ops && sta->crypt->ops->print_stats)
1036 p = sta->crypt->ops->print_stats(p, sta->crypt->priv);
1037 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1039 if (sta->u.ap.channel >= 0)
1040 p += sprintf(p, "channel=%d\n", sta->u.ap.channel);
1041 p += sprintf(p, "ssid=");
1042 for (i = 0; i < sta->u.ap.ssid_len; i++)
1043 p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 &&
1044 sta->u.ap.ssid[i] < 127) ?
1047 p += sprintf(p, "\n");
1049 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1055 static void handle_add_proc_queue(struct work_struct *work)
1057 struct ap_data *ap = container_of(work, struct ap_data,
1058 add_sta_proc_queue);
1059 struct sta_info *sta;
1061 struct add_sta_proc_data *entry, *prev;
1063 entry = ap->add_sta_proc_entries;
1064 ap->add_sta_proc_entries = NULL;
1067 spin_lock_bh(&ap->sta_table_lock);
1068 sta = ap_get_sta(ap, entry->addr);
1070 atomic_inc(&sta->users);
1071 spin_unlock_bh(&ap->sta_table_lock);
1074 sprintf(name, "%pM", sta->addr);
1075 sta->proc = create_proc_read_entry(
1077 prism2_sta_proc_read, sta);
1079 atomic_dec(&sta->users);
1083 entry = entry->next;
1089 static struct sta_info * ap_add_sta(struct ap_data *ap, u8 *addr)
1091 struct sta_info *sta;
1093 sta = kzalloc(sizeof(struct sta_info), GFP_ATOMIC);
1095 PDEBUG(DEBUG_AP, "AP: kmalloc failed\n");
1099 /* initialize STA info data */
1100 sta->local = ap->local;
1101 skb_queue_head_init(&sta->tx_buf);
1102 memcpy(sta->addr, addr, ETH_ALEN);
1104 atomic_inc(&sta->users);
1105 spin_lock_bh(&ap->sta_table_lock);
1106 list_add(&sta->list, &ap->sta_list);
1108 ap_sta_hash_add(ap, sta);
1109 spin_unlock_bh(&ap->sta_table_lock);
1112 struct add_sta_proc_data *entry;
1113 /* schedule a non-interrupt context process to add a procfs
1114 * entry for the STA since procfs code use GFP_KERNEL */
1115 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
1117 memcpy(entry->addr, sta->addr, ETH_ALEN);
1118 entry->next = ap->add_sta_proc_entries;
1119 ap->add_sta_proc_entries = entry;
1120 schedule_work(&ap->add_sta_proc_queue);
1122 printk(KERN_DEBUG "Failed to add STA proc data\n");
1125 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1126 init_timer(&sta->timer);
1127 sta->timer.expires = jiffies + ap->max_inactivity;
1128 sta->timer.data = (unsigned long) sta;
1129 sta->timer.function = ap_handle_timer;
1130 if (!ap->local->hostapd)
1131 add_timer(&sta->timer);
1132 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1138 static int ap_tx_rate_ok(int rateidx, struct sta_info *sta,
1139 local_info_t *local)
1141 if (rateidx > sta->tx_max_rate ||
1142 !(sta->tx_supp_rates & (1 << rateidx)))
1145 if (local->tx_rate_control != 0 &&
1146 !(local->tx_rate_control & (1 << rateidx)))
1153 static void prism2_check_tx_rates(struct sta_info *sta)
1157 sta->tx_supp_rates = 0;
1158 for (i = 0; i < sizeof(sta->supported_rates); i++) {
1159 if ((sta->supported_rates[i] & 0x7f) == 2)
1160 sta->tx_supp_rates |= WLAN_RATE_1M;
1161 if ((sta->supported_rates[i] & 0x7f) == 4)
1162 sta->tx_supp_rates |= WLAN_RATE_2M;
1163 if ((sta->supported_rates[i] & 0x7f) == 11)
1164 sta->tx_supp_rates |= WLAN_RATE_5M5;
1165 if ((sta->supported_rates[i] & 0x7f) == 22)
1166 sta->tx_supp_rates |= WLAN_RATE_11M;
1168 sta->tx_max_rate = sta->tx_rate = sta->tx_rate_idx = 0;
1169 if (sta->tx_supp_rates & WLAN_RATE_1M) {
1170 sta->tx_max_rate = 0;
1171 if (ap_tx_rate_ok(0, sta, sta->local)) {
1173 sta->tx_rate_idx = 0;
1176 if (sta->tx_supp_rates & WLAN_RATE_2M) {
1177 sta->tx_max_rate = 1;
1178 if (ap_tx_rate_ok(1, sta, sta->local)) {
1180 sta->tx_rate_idx = 1;
1183 if (sta->tx_supp_rates & WLAN_RATE_5M5) {
1184 sta->tx_max_rate = 2;
1185 if (ap_tx_rate_ok(2, sta, sta->local)) {
1187 sta->tx_rate_idx = 2;
1190 if (sta->tx_supp_rates & WLAN_RATE_11M) {
1191 sta->tx_max_rate = 3;
1192 if (ap_tx_rate_ok(3, sta, sta->local)) {
1194 sta->tx_rate_idx = 3;
1200 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1202 static void ap_crypt_init(struct ap_data *ap)
1204 ap->crypt = lib80211_get_crypto_ops("WEP");
1207 if (ap->crypt->init) {
1208 ap->crypt_priv = ap->crypt->init(0);
1209 if (ap->crypt_priv == NULL)
1212 u8 key[WEP_KEY_LEN];
1213 get_random_bytes(key, WEP_KEY_LEN);
1214 ap->crypt->set_key(key, WEP_KEY_LEN, NULL,
1220 if (ap->crypt == NULL) {
1221 printk(KERN_WARNING "AP could not initialize WEP: load module "
1222 "lib80211_crypt_wep.ko\n");
1227 /* Generate challenge data for shared key authentication. IEEE 802.11 specifies
1228 * that WEP algorithm is used for generating challange. This should be unique,
1229 * but otherwise there is not really need for randomness etc. Initialize WEP
1230 * with pseudo random key and then use increasing IV to get unique challenge
1233 * Called only as a scheduled task for pending AP frames.
1235 static char * ap_auth_make_challenge(struct ap_data *ap)
1238 struct sk_buff *skb;
1240 if (ap->crypt == NULL) {
1242 if (ap->crypt == NULL)
1246 tmpbuf = kmalloc(WLAN_AUTH_CHALLENGE_LEN, GFP_ATOMIC);
1247 if (tmpbuf == NULL) {
1248 PDEBUG(DEBUG_AP, "AP: kmalloc failed for challenge\n");
1252 skb = dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN +
1253 ap->crypt->extra_mpdu_prefix_len +
1254 ap->crypt->extra_mpdu_postfix_len);
1260 skb_reserve(skb, ap->crypt->extra_mpdu_prefix_len);
1261 memset(skb_put(skb, WLAN_AUTH_CHALLENGE_LEN), 0,
1262 WLAN_AUTH_CHALLENGE_LEN);
1263 if (ap->crypt->encrypt_mpdu(skb, 0, ap->crypt_priv)) {
1269 skb_copy_from_linear_data_offset(skb, ap->crypt->extra_mpdu_prefix_len,
1270 tmpbuf, WLAN_AUTH_CHALLENGE_LEN);
1277 /* Called only as a scheduled task for pending AP frames. */
1278 static void handle_authen(local_info_t *local, struct sk_buff *skb,
1279 struct hostap_80211_rx_status *rx_stats)
1281 struct net_device *dev = local->dev;
1282 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1284 struct ap_data *ap = local->ap;
1285 char body[8 + WLAN_AUTH_CHALLENGE_LEN], *challenge = NULL;
1287 u16 auth_alg, auth_transaction, status_code;
1289 u16 resp = WLAN_STATUS_SUCCESS;
1290 struct sta_info *sta = NULL;
1291 struct lib80211_crypt_data *crypt;
1294 len = skb->len - IEEE80211_MGMT_HDR_LEN;
1296 hdrlen = hostap_80211_get_hdrlen(hdr->frame_control);
1299 PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload "
1300 "(len=%d) from %pM\n", dev->name, len, hdr->addr2);
1304 spin_lock_bh(&local->ap->sta_table_lock);
1305 sta = ap_get_sta(local->ap, hdr->addr2);
1307 atomic_inc(&sta->users);
1308 spin_unlock_bh(&local->ap->sta_table_lock);
1310 if (sta && sta->crypt)
1314 if (skb->len >= hdrlen + 3)
1315 idx = skb->data[hdrlen + 3] >> 6;
1316 crypt = local->crypt_info.crypt[idx];
1319 pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
1320 auth_alg = __le16_to_cpu(*pos);
1322 auth_transaction = __le16_to_cpu(*pos);
1324 status_code = __le16_to_cpu(*pos);
1327 if (memcmp(dev->dev_addr, hdr->addr2, ETH_ALEN) == 0 ||
1328 ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) {
1329 txt = "authentication denied";
1330 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1334 if (((local->auth_algs & PRISM2_AUTH_OPEN) &&
1335 auth_alg == WLAN_AUTH_OPEN) ||
1336 ((local->auth_algs & PRISM2_AUTH_SHARED_KEY) &&
1337 crypt && auth_alg == WLAN_AUTH_SHARED_KEY)) {
1339 txt = "unsupported algorithm";
1340 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1346 if (*u == WLAN_EID_CHALLENGE) {
1347 if (*(u + 1) != WLAN_AUTH_CHALLENGE_LEN) {
1348 txt = "invalid challenge len";
1349 resp = WLAN_STATUS_CHALLENGE_FAIL;
1352 if (len - 8 < WLAN_AUTH_CHALLENGE_LEN) {
1353 txt = "challenge underflow";
1354 resp = WLAN_STATUS_CHALLENGE_FAIL;
1357 challenge = (char *) (u + 2);
1361 if (sta && sta->ap) {
1362 if (time_after(jiffies, sta->u.ap.last_beacon +
1363 (10 * sta->listen_interval * HZ) / 1024)) {
1364 PDEBUG(DEBUG_AP, "%s: no beacons received for a while,"
1365 " assuming AP %pM is now STA\n",
1366 dev->name, sta->addr);
1369 sta->u.sta.challenge = NULL;
1371 txt = "AP trying to authenticate?";
1372 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1377 if ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) ||
1378 (auth_alg == WLAN_AUTH_SHARED_KEY &&
1379 (auth_transaction == 1 ||
1380 (auth_transaction == 3 && sta != NULL &&
1381 sta->u.sta.challenge != NULL)))) {
1383 txt = "unknown authentication transaction number";
1384 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1391 if (local->ap->num_sta >= MAX_STA_COUNT) {
1392 /* FIX: might try to remove some old STAs first? */
1393 txt = "no more room for new STAs";
1394 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1398 sta = ap_add_sta(local->ap, hdr->addr2);
1400 txt = "ap_add_sta failed";
1401 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1407 case WLAN_AUTH_OPEN:
1409 /* IEEE 802.11 standard is not completely clear about
1410 * whether STA is considered authenticated after
1411 * authentication OK frame has been send or after it
1412 * has been ACKed. In order to reduce interoperability
1413 * issues, mark the STA authenticated before ACK. */
1414 sta->flags |= WLAN_STA_AUTH;
1417 case WLAN_AUTH_SHARED_KEY:
1418 if (auth_transaction == 1) {
1419 if (sta->u.sta.challenge == NULL) {
1420 sta->u.sta.challenge =
1421 ap_auth_make_challenge(local->ap);
1422 if (sta->u.sta.challenge == NULL) {
1423 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1428 if (sta->u.sta.challenge == NULL ||
1429 challenge == NULL ||
1430 memcmp(sta->u.sta.challenge, challenge,
1431 WLAN_AUTH_CHALLENGE_LEN) != 0 ||
1432 !ieee80211_has_protected(hdr->frame_control)) {
1433 txt = "challenge response incorrect";
1434 resp = WLAN_STATUS_CHALLENGE_FAIL;
1438 txt = "challenge OK - authOK";
1439 /* IEEE 802.11 standard is not completely clear about
1440 * whether STA is considered authenticated after
1441 * authentication OK frame has been send or after it
1442 * has been ACKed. In order to reduce interoperability
1443 * issues, mark the STA authenticated before ACK. */
1444 sta->flags |= WLAN_STA_AUTH;
1445 kfree(sta->u.sta.challenge);
1446 sta->u.sta.challenge = NULL;
1452 pos = (__le16 *) body;
1453 *pos = cpu_to_le16(auth_alg);
1455 *pos = cpu_to_le16(auth_transaction + 1);
1457 *pos = cpu_to_le16(resp); /* status_code */
1461 if (resp == WLAN_STATUS_SUCCESS && sta != NULL &&
1462 sta->u.sta.challenge != NULL &&
1463 auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 1) {
1464 u8 *tmp = (u8 *) pos;
1465 *tmp++ = WLAN_EID_CHALLENGE;
1466 *tmp++ = WLAN_AUTH_CHALLENGE_LEN;
1468 memcpy(pos, sta->u.sta.challenge, WLAN_AUTH_CHALLENGE_LEN);
1469 olen += 2 + WLAN_AUTH_CHALLENGE_LEN;
1472 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH,
1473 body, olen, hdr->addr2, ap->tx_callback_auth);
1476 sta->last_rx = jiffies;
1477 atomic_dec(&sta->users);
1481 PDEBUG(DEBUG_AP, "%s: %pM auth (alg=%d "
1482 "trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n",
1483 dev->name, hdr->addr2,
1484 auth_alg, auth_transaction, status_code, len,
1485 le16_to_cpu(hdr->frame_control), resp, txt);
1490 /* Called only as a scheduled task for pending AP frames. */
1491 static void handle_assoc(local_info_t *local, struct sk_buff *skb,
1492 struct hostap_80211_rx_status *rx_stats, int reassoc)
1494 struct net_device *dev = local->dev;
1495 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1496 char body[12], *p, *lpos;
1499 u16 resp = WLAN_STATUS_SUCCESS;
1500 struct sta_info *sta = NULL;
1501 int send_deauth = 0;
1503 u8 prev_ap[ETH_ALEN];
1505 left = len = skb->len - IEEE80211_MGMT_HDR_LEN;
1507 if (len < (reassoc ? 10 : 4)) {
1508 PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload "
1509 "(len=%d, reassoc=%d) from %pM\n",
1510 dev->name, len, reassoc, hdr->addr2);
1514 spin_lock_bh(&local->ap->sta_table_lock);
1515 sta = ap_get_sta(local->ap, hdr->addr2);
1516 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
1517 spin_unlock_bh(&local->ap->sta_table_lock);
1518 txt = "trying to associate before authentication";
1520 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1521 sta = NULL; /* do not decrement sta->users */
1524 atomic_inc(&sta->users);
1525 spin_unlock_bh(&local->ap->sta_table_lock);
1527 pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
1528 sta->capability = __le16_to_cpu(*pos);
1530 sta->listen_interval = __le16_to_cpu(*pos);
1534 memcpy(prev_ap, pos, ETH_ALEN);
1535 pos++; pos++; pos++; left -= 6;
1537 memset(prev_ap, 0, ETH_ALEN);
1541 unsigned char *u = (unsigned char *) pos;
1543 if (*u == WLAN_EID_SSID) {
1548 if (ileft > left || ileft > MAX_SSID_LEN) {
1549 txt = "SSID overflow";
1550 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1554 if (ileft != strlen(local->essid) ||
1555 memcmp(local->essid, u, ileft) != 0) {
1556 txt = "not our SSID";
1557 resp = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1565 if (left >= 2 && *u == WLAN_EID_SUPP_RATES) {
1570 if (ileft > left || ileft == 0 ||
1571 ileft > WLAN_SUPP_RATES_MAX) {
1572 txt = "SUPP_RATES len error";
1573 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1577 memset(sta->supported_rates, 0,
1578 sizeof(sta->supported_rates));
1579 memcpy(sta->supported_rates, u, ileft);
1580 prism2_check_tx_rates(sta);
1587 PDEBUG(DEBUG_AP, "%s: assoc from %pM"
1588 " with extra data (%d bytes) [",
1589 dev->name, hdr->addr2, left);
1591 PDEBUG2(DEBUG_AP, "<%02x>", *u);
1594 PDEBUG2(DEBUG_AP, "]\n");
1597 txt = "frame underflow";
1598 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1602 /* get a unique AID */
1604 txt = "OK, old AID";
1606 spin_lock_bh(&local->ap->sta_table_lock);
1607 for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
1608 if (local->ap->sta_aid[sta->aid - 1] == NULL)
1610 if (sta->aid > MAX_AID_TABLE_SIZE) {
1612 spin_unlock_bh(&local->ap->sta_table_lock);
1613 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1614 txt = "no room for more AIDs";
1616 local->ap->sta_aid[sta->aid - 1] = sta;
1617 spin_unlock_bh(&local->ap->sta_table_lock);
1618 txt = "OK, new AID";
1623 pos = (__le16 *) body;
1626 *pos = cpu_to_le16(WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH);
1629 /* FIX: CF-Pollable and CF-PollReq should be set to match the
1630 * values in beacons/probe responses */
1631 /* FIX: how about privacy and WEP? */
1633 *pos = cpu_to_le16(WLAN_CAPABILITY_ESS);
1637 *pos = cpu_to_le16(resp);
1640 *pos = cpu_to_le16((sta && sta->aid > 0 ? sta->aid : 0) |
1641 BIT(14) | BIT(15)); /* AID */
1644 /* Supported rates (Information element) */
1646 *p++ = WLAN_EID_SUPP_RATES;
1649 if (local->tx_rate_control & WLAN_RATE_1M) {
1650 *p++ = local->basic_rates & WLAN_RATE_1M ? 0x82 : 0x02;
1653 if (local->tx_rate_control & WLAN_RATE_2M) {
1654 *p++ = local->basic_rates & WLAN_RATE_2M ? 0x84 : 0x04;
1657 if (local->tx_rate_control & WLAN_RATE_5M5) {
1658 *p++ = local->basic_rates & WLAN_RATE_5M5 ?
1662 if (local->tx_rate_control & WLAN_RATE_11M) {
1663 *p++ = local->basic_rates & WLAN_RATE_11M ?
1670 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT |
1671 (send_deauth ? IEEE80211_STYPE_DEAUTH :
1672 (reassoc ? IEEE80211_STYPE_REASSOC_RESP :
1673 IEEE80211_STYPE_ASSOC_RESP)),
1674 body, (u8 *) pos - (u8 *) body,
1676 send_deauth ? 0 : local->ap->tx_callback_assoc);
1679 if (resp == WLAN_STATUS_SUCCESS) {
1680 sta->last_rx = jiffies;
1681 /* STA will be marked associated from TX callback, if
1682 * AssocResp is ACKed */
1684 atomic_dec(&sta->users);
1688 PDEBUG(DEBUG_AP, "%s: %pM %sassoc (len=%d "
1689 "prev_ap=%pM) => %d(%d) (%s)\n",
1692 reassoc ? "re" : "", len,
1694 resp, send_deauth, txt);
1699 /* Called only as a scheduled task for pending AP frames. */
1700 static void handle_deauth(local_info_t *local, struct sk_buff *skb,
1701 struct hostap_80211_rx_status *rx_stats)
1703 struct net_device *dev = local->dev;
1704 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1705 char *body = (char *) (skb->data + IEEE80211_MGMT_HDR_LEN);
1709 struct sta_info *sta = NULL;
1711 len = skb->len - IEEE80211_MGMT_HDR_LEN;
1714 printk("handle_deauth - too short payload (len=%d)\n", len);
1718 pos = (__le16 *) body;
1719 reason_code = le16_to_cpu(*pos);
1721 PDEBUG(DEBUG_AP, "%s: deauthentication: %pM len=%d, "
1722 "reason_code=%d\n", dev->name, hdr->addr2,
1725 spin_lock_bh(&local->ap->sta_table_lock);
1726 sta = ap_get_sta(local->ap, hdr->addr2);
1728 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap)
1729 hostap_event_expired_sta(local->dev, sta);
1730 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1732 spin_unlock_bh(&local->ap->sta_table_lock);
1734 printk("%s: deauthentication from %pM, "
1735 "reason_code=%d, but STA not authenticated\n", dev->name,
1736 hdr->addr2, reason_code);
1741 /* Called only as a scheduled task for pending AP frames. */
1742 static void handle_disassoc(local_info_t *local, struct sk_buff *skb,
1743 struct hostap_80211_rx_status *rx_stats)
1745 struct net_device *dev = local->dev;
1746 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1747 char *body = skb->data + IEEE80211_MGMT_HDR_LEN;
1751 struct sta_info *sta = NULL;
1753 len = skb->len - IEEE80211_MGMT_HDR_LEN;
1756 printk("handle_disassoc - too short payload (len=%d)\n", len);
1760 pos = (__le16 *) body;
1761 reason_code = le16_to_cpu(*pos);
1763 PDEBUG(DEBUG_AP, "%s: disassociation: %pM len=%d, "
1764 "reason_code=%d\n", dev->name, hdr->addr2,
1767 spin_lock_bh(&local->ap->sta_table_lock);
1768 sta = ap_get_sta(local->ap, hdr->addr2);
1770 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap)
1771 hostap_event_expired_sta(local->dev, sta);
1772 sta->flags &= ~WLAN_STA_ASSOC;
1774 spin_unlock_bh(&local->ap->sta_table_lock);
1776 printk("%s: disassociation from %pM, "
1777 "reason_code=%d, but STA not authenticated\n",
1778 dev->name, hdr->addr2, reason_code);
1783 /* Called only as a scheduled task for pending AP frames. */
1784 static void ap_handle_data_nullfunc(local_info_t *local,
1785 struct ieee80211_hdr *hdr)
1787 struct net_device *dev = local->dev;
1789 /* some STA f/w's seem to require control::ACK frame for
1790 * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does
1792 * send control::ACK for the data::nullfunc */
1794 printk(KERN_DEBUG "Sending control::ACK for data::nullfunc\n");
1795 prism2_send_mgmt(dev, IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK,
1796 NULL, 0, hdr->addr2, 0);
1800 /* Called only as a scheduled task for pending AP frames. */
1801 static void ap_handle_dropped_data(local_info_t *local,
1802 struct ieee80211_hdr *hdr)
1804 struct net_device *dev = local->dev;
1805 struct sta_info *sta;
1808 spin_lock_bh(&local->ap->sta_table_lock);
1809 sta = ap_get_sta(local->ap, hdr->addr2);
1811 atomic_inc(&sta->users);
1812 spin_unlock_bh(&local->ap->sta_table_lock);
1814 if (sta != NULL && (sta->flags & WLAN_STA_ASSOC)) {
1815 PDEBUG(DEBUG_AP, "ap_handle_dropped_data: STA is now okay?\n");
1816 atomic_dec(&sta->users);
1820 reason = cpu_to_le16(WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1821 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT |
1822 ((sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) ?
1823 IEEE80211_STYPE_DEAUTH : IEEE80211_STYPE_DISASSOC),
1824 (char *) &reason, sizeof(reason), hdr->addr2, 0);
1827 atomic_dec(&sta->users);
1830 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1833 /* Called only as a scheduled task for pending AP frames. */
1834 static void pspoll_send_buffered(local_info_t *local, struct sta_info *sta,
1835 struct sk_buff *skb)
1837 struct hostap_skb_tx_data *meta;
1839 if (!(sta->flags & WLAN_STA_PS)) {
1840 /* Station has moved to non-PS mode, so send all buffered
1841 * frames using normal device queue. */
1842 dev_queue_xmit(skb);
1846 /* add a flag for hostap_handle_sta_tx() to know that this skb should
1847 * be passed through even though STA is using PS */
1848 meta = (struct hostap_skb_tx_data *) skb->cb;
1849 meta->flags |= HOSTAP_TX_FLAGS_BUFFERED_FRAME;
1850 if (!skb_queue_empty(&sta->tx_buf)) {
1851 /* indicate to STA that more frames follow */
1852 meta->flags |= HOSTAP_TX_FLAGS_ADD_MOREDATA;
1854 dev_queue_xmit(skb);
1858 /* Called only as a scheduled task for pending AP frames. */
1859 static void handle_pspoll(local_info_t *local,
1860 struct ieee80211_hdr *hdr,
1861 struct hostap_80211_rx_status *rx_stats)
1863 struct net_device *dev = local->dev;
1864 struct sta_info *sta;
1866 struct sk_buff *skb;
1868 PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=%pM, TA=%pM PWRMGT=%d\n",
1869 hdr->addr1, hdr->addr2, !!ieee80211_has_pm(hdr->frame_control));
1871 if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
1873 "handle_pspoll - addr1(BSSID)=%pM not own MAC\n",
1878 aid = le16_to_cpu(hdr->duration_id);
1879 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) {
1880 PDEBUG(DEBUG_PS, " PSPOLL and AID[15:14] not set\n");
1883 aid &= ~(BIT(15) | BIT(14));
1884 if (aid == 0 || aid > MAX_AID_TABLE_SIZE) {
1885 PDEBUG(DEBUG_PS, " invalid aid=%d\n", aid);
1888 PDEBUG(DEBUG_PS2, " aid=%d\n", aid);
1890 spin_lock_bh(&local->ap->sta_table_lock);
1891 sta = ap_get_sta(local->ap, hdr->addr2);
1893 atomic_inc(&sta->users);
1894 spin_unlock_bh(&local->ap->sta_table_lock);
1897 PDEBUG(DEBUG_PS, " STA not found\n");
1900 if (sta->aid != aid) {
1901 PDEBUG(DEBUG_PS, " received aid=%i does not match with "
1902 "assoc.aid=%d\n", aid, sta->aid);
1907 * - add timeout for buffering (clear aid in TIM vector if buffer timed
1908 * out (expiry time must be longer than ListenInterval for
1909 * the corresponding STA; "8802-11: 11.2.1.9 AP aging function"
1910 * - what to do, if buffered, pspolled, and sent frame is not ACKed by
1911 * sta; store buffer for later use and leave TIM aid bit set? use
1912 * TX event to check whether frame was ACKed?
1915 while ((skb = skb_dequeue(&sta->tx_buf)) != NULL) {
1916 /* send buffered frame .. */
1917 PDEBUG(DEBUG_PS2, "Sending buffered frame to STA after PS POLL"
1918 " (buffer_count=%d)\n", skb_queue_len(&sta->tx_buf));
1920 pspoll_send_buffered(local, sta, skb);
1922 if (sta->flags & WLAN_STA_PS) {
1923 /* send only one buffered packet per PS Poll */
1924 /* FIX: should ignore further PS Polls until the
1925 * buffered packet that was just sent is acknowledged
1926 * (Tx or TxExc event) */
1931 if (skb_queue_empty(&sta->tx_buf)) {
1932 /* try to clear aid from TIM */
1933 if (!(sta->flags & WLAN_STA_TIM))
1934 PDEBUG(DEBUG_PS2, "Re-unsetting TIM for aid %d\n",
1936 hostap_set_tim(local, aid, 0);
1937 sta->flags &= ~WLAN_STA_TIM;
1940 atomic_dec(&sta->users);
1944 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1946 static void handle_wds_oper_queue(struct work_struct *work)
1948 struct ap_data *ap = container_of(work, struct ap_data,
1950 local_info_t *local = ap->local;
1951 struct wds_oper_data *entry, *prev;
1953 spin_lock_bh(&local->lock);
1954 entry = local->ap->wds_oper_entries;
1955 local->ap->wds_oper_entries = NULL;
1956 spin_unlock_bh(&local->lock);
1959 PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection "
1962 entry->type == WDS_ADD ? "adding" : "removing",
1964 if (entry->type == WDS_ADD)
1965 prism2_wds_add(local, entry->addr, 0);
1966 else if (entry->type == WDS_DEL)
1967 prism2_wds_del(local, entry->addr, 0, 1);
1970 entry = entry->next;
1976 /* Called only as a scheduled task for pending AP frames. */
1977 static void handle_beacon(local_info_t *local, struct sk_buff *skb,
1978 struct hostap_80211_rx_status *rx_stats)
1980 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1981 char *body = skb->data + IEEE80211_MGMT_HDR_LEN;
1983 u16 beacon_int, capability;
1986 unsigned char *supp_rates = NULL;
1987 int ssid_len = 0, supp_rates_len = 0;
1988 struct sta_info *sta = NULL;
1989 int new_sta = 0, channel = -1;
1991 len = skb->len - IEEE80211_MGMT_HDR_LEN;
1993 if (len < 8 + 2 + 2) {
1994 printk(KERN_DEBUG "handle_beacon - too short payload "
1999 pos = (__le16 *) body;
2002 /* Timestamp (8 octets) */
2003 pos += 4; left -= 8;
2004 /* Beacon interval (2 octets) */
2005 beacon_int = le16_to_cpu(*pos);
2007 /* Capability information (2 octets) */
2008 capability = le16_to_cpu(*pos);
2011 if (local->ap->ap_policy != AP_OTHER_AP_EVEN_IBSS &&
2012 capability & WLAN_CAPABILITY_IBSS)
2017 unsigned char *u = (unsigned char *) pos;
2019 if (*u == WLAN_EID_SSID) {
2024 if (ileft > left || ileft > MAX_SSID_LEN) {
2025 PDEBUG(DEBUG_AP, "SSID: overflow\n");
2029 if (local->ap->ap_policy == AP_OTHER_AP_SAME_SSID &&
2030 (ileft != strlen(local->essid) ||
2031 memcmp(local->essid, u, ileft) != 0)) {
2043 if (*u == WLAN_EID_SUPP_RATES) {
2048 if (ileft > left || ileft == 0 || ileft > 8) {
2049 PDEBUG(DEBUG_AP, " - SUPP_RATES len error\n");
2054 supp_rates_len = ileft;
2060 if (*u == WLAN_EID_DS_PARAMS) {
2065 if (ileft > left || ileft != 1) {
2066 PDEBUG(DEBUG_AP, " - DS_PARAMS len error\n");
2077 spin_lock_bh(&local->ap->sta_table_lock);
2078 sta = ap_get_sta(local->ap, hdr->addr2);
2080 atomic_inc(&sta->users);
2081 spin_unlock_bh(&local->ap->sta_table_lock);
2086 sta = ap_add_sta(local->ap, hdr->addr2);
2088 printk(KERN_INFO "prism2: kmalloc failed for AP "
2089 "data structure\n");
2092 hostap_event_new_sta(local->dev, sta);
2094 /* mark APs authentication and associated for pseudo ad-hoc
2095 * style communication */
2096 sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
2098 if (local->ap->autom_ap_wds) {
2099 hostap_wds_link_oper(local, sta->addr, WDS_ADD);
2105 sta->u.ap.ssid_len = ssid_len;
2106 memcpy(sta->u.ap.ssid, ssid, ssid_len);
2107 sta->u.ap.ssid[ssid_len] = '\0';
2109 sta->u.ap.ssid_len = 0;
2110 sta->u.ap.ssid[0] = '\0';
2112 sta->u.ap.channel = channel;
2114 sta->rx_bytes += len;
2115 sta->u.ap.last_beacon = sta->last_rx = jiffies;
2116 sta->capability = capability;
2117 sta->listen_interval = beacon_int;
2119 atomic_dec(&sta->users);
2122 memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
2123 memcpy(sta->supported_rates, supp_rates, supp_rates_len);
2124 prism2_check_tx_rates(sta);
2128 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2131 /* Called only as a tasklet. */
2132 static void handle_ap_item(local_info_t *local, struct sk_buff *skb,
2133 struct hostap_80211_rx_status *rx_stats)
2135 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2136 struct net_device *dev = local->dev;
2137 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2138 u16 fc, type, stype;
2139 struct ieee80211_hdr *hdr;
2141 /* FIX: should give skb->len to handler functions and check that the
2142 * buffer is long enough */
2143 hdr = (struct ieee80211_hdr *) skb->data;
2144 fc = le16_to_cpu(hdr->frame_control);
2145 type = fc & IEEE80211_FCTL_FTYPE;
2146 stype = fc & IEEE80211_FCTL_STYPE;
2148 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2149 if (!local->hostapd && type == IEEE80211_FTYPE_DATA) {
2150 PDEBUG(DEBUG_AP, "handle_ap_item - data frame\n");
2152 if (!(fc & IEEE80211_FCTL_TODS) ||
2153 (fc & IEEE80211_FCTL_FROMDS)) {
2154 if (stype == IEEE80211_STYPE_NULLFUNC) {
2155 /* no ToDS nullfunc seems to be used to check
2156 * AP association; so send reject message to
2157 * speed up re-association */
2158 ap_handle_dropped_data(local, hdr);
2161 PDEBUG(DEBUG_AP, " not ToDS frame (fc=0x%04x)\n",
2166 if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
2167 PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=%pM"
2168 " not own MAC\n", hdr->addr1);
2172 if (local->ap->nullfunc_ack &&
2173 stype == IEEE80211_STYPE_NULLFUNC)
2174 ap_handle_data_nullfunc(local, hdr);
2176 ap_handle_dropped_data(local, hdr);
2180 if (type == IEEE80211_FTYPE_MGMT && stype == IEEE80211_STYPE_BEACON) {
2181 handle_beacon(local, skb, rx_stats);
2184 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2186 if (type == IEEE80211_FTYPE_CTL && stype == IEEE80211_STYPE_PSPOLL) {
2187 handle_pspoll(local, hdr, rx_stats);
2191 if (local->hostapd) {
2192 PDEBUG(DEBUG_AP, "Unknown frame in AP queue: type=0x%02x "
2193 "subtype=0x%02x\n", type, stype);
2197 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2198 if (type != IEEE80211_FTYPE_MGMT) {
2199 PDEBUG(DEBUG_AP, "handle_ap_item - not a management frame?\n");
2203 if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
2204 PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%pM"
2205 " not own MAC\n", hdr->addr1);
2209 if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN)) {
2210 PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=%pM"
2211 " not own MAC\n", hdr->addr3);
2216 case IEEE80211_STYPE_ASSOC_REQ:
2217 handle_assoc(local, skb, rx_stats, 0);
2219 case IEEE80211_STYPE_ASSOC_RESP:
2220 PDEBUG(DEBUG_AP, "==> ASSOC RESP (ignored)\n");
2222 case IEEE80211_STYPE_REASSOC_REQ:
2223 handle_assoc(local, skb, rx_stats, 1);
2225 case IEEE80211_STYPE_REASSOC_RESP:
2226 PDEBUG(DEBUG_AP, "==> REASSOC RESP (ignored)\n");
2228 case IEEE80211_STYPE_ATIM:
2229 PDEBUG(DEBUG_AP, "==> ATIM (ignored)\n");
2231 case IEEE80211_STYPE_DISASSOC:
2232 handle_disassoc(local, skb, rx_stats);
2234 case IEEE80211_STYPE_AUTH:
2235 handle_authen(local, skb, rx_stats);
2237 case IEEE80211_STYPE_DEAUTH:
2238 handle_deauth(local, skb, rx_stats);
2241 PDEBUG(DEBUG_AP, "Unknown mgmt frame subtype 0x%02x\n",
2245 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2252 /* Called only as a tasklet (software IRQ) */
2253 void hostap_rx(struct net_device *dev, struct sk_buff *skb,
2254 struct hostap_80211_rx_status *rx_stats)
2256 struct hostap_interface *iface;
2257 local_info_t *local;
2258 struct ieee80211_hdr *hdr;
2260 iface = netdev_priv(dev);
2261 local = iface->local;
2266 dev->stats.rx_packets++;
2268 hdr = (struct ieee80211_hdr *) skb->data;
2270 if (local->ap->ap_policy == AP_OTHER_AP_SKIP_ALL &&
2271 ieee80211_is_beacon(hdr->frame_control))
2274 skb->protocol = cpu_to_be16(ETH_P_HOSTAP);
2275 handle_ap_item(local, skb, rx_stats);
2283 /* Called only as a tasklet (software IRQ) */
2284 static void schedule_packet_send(local_info_t *local, struct sta_info *sta)
2286 struct sk_buff *skb;
2287 struct ieee80211_hdr *hdr;
2288 struct hostap_80211_rx_status rx_stats;
2290 if (skb_queue_empty(&sta->tx_buf))
2293 skb = dev_alloc_skb(16);
2295 printk(KERN_DEBUG "%s: schedule_packet_send: skb alloc "
2296 "failed\n", local->dev->name);
2300 hdr = (struct ieee80211_hdr *) skb_put(skb, 16);
2302 /* Generate a fake pspoll frame to start packet delivery */
2303 hdr->frame_control = cpu_to_le16(
2304 IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
2305 memcpy(hdr->addr1, local->dev->dev_addr, ETH_ALEN);
2306 memcpy(hdr->addr2, sta->addr, ETH_ALEN);
2307 hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14));
2310 "%s: Scheduling buffered packet delivery for STA %pM\n",
2311 local->dev->name, sta->addr);
2313 skb->dev = local->dev;
2315 memset(&rx_stats, 0, sizeof(rx_stats));
2316 hostap_rx(local->dev, skb, &rx_stats);
2320 int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[],
2321 struct iw_quality qual[], int buf_size,
2324 struct ap_data *ap = local->ap;
2325 struct list_head *ptr;
2328 spin_lock_bh(&ap->sta_table_lock);
2330 for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list;
2332 struct sta_info *sta = (struct sta_info *) ptr;
2334 if (aplist && !sta->ap)
2336 addr[count].sa_family = ARPHRD_ETHER;
2337 memcpy(addr[count].sa_data, sta->addr, ETH_ALEN);
2338 if (sta->last_rx_silence == 0)
2339 qual[count].qual = sta->last_rx_signal < 27 ?
2340 0 : (sta->last_rx_signal - 27) * 92 / 127;
2342 qual[count].qual = sta->last_rx_signal -
2343 sta->last_rx_silence - 35;
2344 qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal);
2345 qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
2346 qual[count].updated = sta->last_rx_updated;
2348 sta->last_rx_updated = IW_QUAL_DBM;
2351 if (count >= buf_size)
2354 spin_unlock_bh(&ap->sta_table_lock);
2360 /* Translate our list of Access Points & Stations to a card independant
2361 * format that the Wireless Tools will understand - Jean II */
2362 int prism2_ap_translate_scan(struct net_device *dev,
2363 struct iw_request_info *info, 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(info, current_ev, end_buf,
2393 &iwe, IW_EV_ADDR_LEN);
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(info, current_ev, end_buf,
2405 &iwe, IW_EV_UINT_LEN);
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(info, current_ev, end_buf,
2421 &iwe, IW_EV_QUAL_LEN);
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(info, current_ev,
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(info, current_ev,
2444 if (sta->u.ap.channel > 0 &&
2445 sta->u.ap.channel <= FREQ_COUNT) {
2446 memset(&iwe, 0, sizeof(iwe));
2447 iwe.cmd = SIOCGIWFREQ;
2448 iwe.u.freq.m = freq_list[sta->u.ap.channel - 1]
2451 current_ev = iwe_stream_add_event(
2452 info, current_ev, end_buf, &iwe,
2456 memset(&iwe, 0, sizeof(iwe));
2457 iwe.cmd = IWEVCUSTOM;
2458 sprintf(buf, "beacon_interval=%d",
2459 sta->listen_interval);
2460 iwe.u.data.length = strlen(buf);
2461 current_ev = iwe_stream_add_point(info, current_ev,
2462 end_buf, &iwe, buf);
2464 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2466 sta->last_rx_updated = IW_QUAL_DBM;
2468 /* To be continued, we should make good use of IWEVCUSTOM */
2471 spin_unlock_bh(&ap->sta_table_lock);
2473 return current_ev - buffer;
2477 static int prism2_hostapd_add_sta(struct ap_data *ap,
2478 struct prism2_hostapd_param *param)
2480 struct sta_info *sta;
2482 spin_lock_bh(&ap->sta_table_lock);
2483 sta = ap_get_sta(ap, param->sta_addr);
2485 atomic_inc(&sta->users);
2486 spin_unlock_bh(&ap->sta_table_lock);
2489 sta = ap_add_sta(ap, param->sta_addr);
2494 if (!(sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
2495 hostap_event_new_sta(sta->local->dev, sta);
2497 sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
2498 sta->last_rx = jiffies;
2499 sta->aid = param->u.add_sta.aid;
2500 sta->capability = param->u.add_sta.capability;
2501 sta->tx_supp_rates = param->u.add_sta.tx_supp_rates;
2502 if (sta->tx_supp_rates & WLAN_RATE_1M)
2503 sta->supported_rates[0] = 2;
2504 if (sta->tx_supp_rates & WLAN_RATE_2M)
2505 sta->supported_rates[1] = 4;
2506 if (sta->tx_supp_rates & WLAN_RATE_5M5)
2507 sta->supported_rates[2] = 11;
2508 if (sta->tx_supp_rates & WLAN_RATE_11M)
2509 sta->supported_rates[3] = 22;
2510 prism2_check_tx_rates(sta);
2511 atomic_dec(&sta->users);
2516 static int prism2_hostapd_remove_sta(struct ap_data *ap,
2517 struct prism2_hostapd_param *param)
2519 struct sta_info *sta;
2521 spin_lock_bh(&ap->sta_table_lock);
2522 sta = ap_get_sta(ap, param->sta_addr);
2524 ap_sta_hash_del(ap, sta);
2525 list_del(&sta->list);
2527 spin_unlock_bh(&ap->sta_table_lock);
2532 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
2533 hostap_event_expired_sta(sta->local->dev, sta);
2534 ap_free_sta(ap, sta);
2540 static int prism2_hostapd_get_info_sta(struct ap_data *ap,
2541 struct prism2_hostapd_param *param)
2543 struct sta_info *sta;
2545 spin_lock_bh(&ap->sta_table_lock);
2546 sta = ap_get_sta(ap, param->sta_addr);
2548 atomic_inc(&sta->users);
2549 spin_unlock_bh(&ap->sta_table_lock);
2554 param->u.get_info_sta.inactive_sec = (jiffies - sta->last_rx) / HZ;
2556 atomic_dec(&sta->users);
2562 static int prism2_hostapd_set_flags_sta(struct ap_data *ap,
2563 struct prism2_hostapd_param *param)
2565 struct sta_info *sta;
2567 spin_lock_bh(&ap->sta_table_lock);
2568 sta = ap_get_sta(ap, param->sta_addr);
2570 sta->flags |= param->u.set_flags_sta.flags_or;
2571 sta->flags &= param->u.set_flags_sta.flags_and;
2573 spin_unlock_bh(&ap->sta_table_lock);
2582 static int prism2_hostapd_sta_clear_stats(struct ap_data *ap,
2583 struct prism2_hostapd_param *param)
2585 struct sta_info *sta;
2588 spin_lock_bh(&ap->sta_table_lock);
2589 sta = ap_get_sta(ap, param->sta_addr);
2591 sta->rx_packets = sta->tx_packets = 0;
2592 sta->rx_bytes = sta->tx_bytes = 0;
2593 for (rate = 0; rate < WLAN_RATE_COUNT; rate++) {
2594 sta->tx_count[rate] = 0;
2595 sta->rx_count[rate] = 0;
2598 spin_unlock_bh(&ap->sta_table_lock);
2607 int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param)
2609 switch (param->cmd) {
2610 case PRISM2_HOSTAPD_FLUSH:
2611 ap_control_kickall(ap);
2613 case PRISM2_HOSTAPD_ADD_STA:
2614 return prism2_hostapd_add_sta(ap, param);
2615 case PRISM2_HOSTAPD_REMOVE_STA:
2616 return prism2_hostapd_remove_sta(ap, param);
2617 case PRISM2_HOSTAPD_GET_INFO_STA:
2618 return prism2_hostapd_get_info_sta(ap, param);
2619 case PRISM2_HOSTAPD_SET_FLAGS_STA:
2620 return prism2_hostapd_set_flags_sta(ap, param);
2621 case PRISM2_HOSTAPD_STA_CLEAR_STATS:
2622 return prism2_hostapd_sta_clear_stats(ap, param);
2624 printk(KERN_WARNING "prism2_hostapd: unknown cmd=%d\n",
2631 /* Update station info for host-based TX rate control and return current
2633 static int ap_update_sta_tx_rate(struct sta_info *sta, struct net_device *dev)
2635 int ret = sta->tx_rate;
2636 struct hostap_interface *iface;
2637 local_info_t *local;
2639 iface = netdev_priv(dev);
2640 local = iface->local;
2642 sta->tx_count[sta->tx_rate_idx]++;
2643 sta->tx_since_last_failure++;
2644 sta->tx_consecutive_exc = 0;
2645 if (sta->tx_since_last_failure >= WLAN_RATE_UPDATE_COUNT &&
2646 sta->tx_rate_idx < sta->tx_max_rate) {
2647 /* use next higher rate */
2648 int old_rate, new_rate;
2649 old_rate = new_rate = sta->tx_rate_idx;
2650 while (new_rate < sta->tx_max_rate) {
2652 if (ap_tx_rate_ok(new_rate, sta, local)) {
2653 sta->tx_rate_idx = new_rate;
2657 if (old_rate != sta->tx_rate_idx) {
2658 switch (sta->tx_rate_idx) {
2659 case 0: sta->tx_rate = 10; break;
2660 case 1: sta->tx_rate = 20; break;
2661 case 2: sta->tx_rate = 55; break;
2662 case 3: sta->tx_rate = 110; break;
2663 default: sta->tx_rate = 0; break;
2665 PDEBUG(DEBUG_AP, "%s: STA %pM TX rate raised to %d\n",
2666 dev->name, sta->addr, sta->tx_rate);
2668 sta->tx_since_last_failure = 0;
2675 /* Called only from software IRQ. Called for each TX frame prior possible
2676 * encryption and transmit. */
2677 ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx)
2679 struct sta_info *sta = NULL;
2680 struct sk_buff *skb = tx->skb;
2682 struct ieee80211_hdr *hdr;
2683 struct hostap_skb_tx_data *meta;
2685 meta = (struct hostap_skb_tx_data *) skb->cb;
2686 ret = AP_TX_CONTINUE;
2687 if (local->ap == NULL || skb->len < 10 ||
2688 meta->iface->type == HOSTAP_INTERFACE_STA)
2691 hdr = (struct ieee80211_hdr *) skb->data;
2693 if (hdr->addr1[0] & 0x01) {
2694 /* broadcast/multicast frame - no AP related processing */
2695 if (local->ap->num_sta <= 0)
2700 /* unicast packet - check whether destination STA is associated */
2701 spin_lock(&local->ap->sta_table_lock);
2702 sta = ap_get_sta(local->ap, hdr->addr1);
2704 atomic_inc(&sta->users);
2705 spin_unlock(&local->ap->sta_table_lock);
2707 if (local->iw_mode == IW_MODE_MASTER && sta == NULL &&
2708 !(meta->flags & HOSTAP_TX_FLAGS_WDS) &&
2709 meta->iface->type != HOSTAP_INTERFACE_MASTER &&
2710 meta->iface->type != HOSTAP_INTERFACE_AP) {
2712 /* This can happen, e.g., when wlan0 is added to a bridge and
2713 * bridging code does not know which port is the correct target
2714 * for a unicast frame. In this case, the packet is send to all
2715 * ports of the bridge. Since this is a valid scenario, do not
2716 * print out any errors here. */
2717 if (net_ratelimit()) {
2718 printk(KERN_DEBUG "AP: drop packet to non-associated "
2719 "STA %pM\n", hdr->addr1);
2722 local->ap->tx_drop_nonassoc++;
2730 if (!(sta->flags & WLAN_STA_AUTHORIZED))
2731 ret = AP_TX_CONTINUE_NOT_AUTHORIZED;
2733 /* Set tx_rate if using host-based TX rate control */
2734 if (!local->fw_tx_rate_control)
2735 local->ap->last_tx_rate = meta->rate =
2736 ap_update_sta_tx_rate(sta, local->dev);
2738 if (local->iw_mode != IW_MODE_MASTER)
2741 if (!(sta->flags & WLAN_STA_PS))
2744 if (meta->flags & HOSTAP_TX_FLAGS_ADD_MOREDATA) {
2745 /* indicate to STA that more frames follow */
2746 hdr->frame_control |=
2747 cpu_to_le16(IEEE80211_FCTL_MOREDATA);
2750 if (meta->flags & HOSTAP_TX_FLAGS_BUFFERED_FRAME) {
2751 /* packet was already buffered and now send due to
2752 * PS poll, so do not rebuffer it */
2756 if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) {
2757 PDEBUG(DEBUG_PS, "%s: No more space in STA (%pM)'s"
2759 local->dev->name, sta->addr);
2760 /* Make sure that TIM is set for the station (it might not be
2761 * after AP wlan hw reset). */
2762 /* FIX: should fix hw reset to restore bits based on STA
2764 hostap_set_tim(local, sta->aid, 1);
2765 sta->flags |= WLAN_STA_TIM;
2770 /* STA in PS mode, buffer frame for later delivery */
2771 set_tim = skb_queue_empty(&sta->tx_buf);
2772 skb_queue_tail(&sta->tx_buf, skb);
2773 /* FIX: could save RX time to skb and expire buffered frames after
2774 * some time if STA does not poll for them */
2777 if (sta->flags & WLAN_STA_TIM)
2778 PDEBUG(DEBUG_PS2, "Re-setting TIM for aid %d\n",
2780 hostap_set_tim(local, sta->aid, 1);
2781 sta->flags |= WLAN_STA_TIM;
2784 ret = AP_TX_BUFFERED;
2788 if (ret == AP_TX_CONTINUE ||
2789 ret == AP_TX_CONTINUE_NOT_AUTHORIZED) {
2791 sta->tx_bytes += skb->len;
2792 sta->last_tx = jiffies;
2795 if ((ret == AP_TX_CONTINUE ||
2796 ret == AP_TX_CONTINUE_NOT_AUTHORIZED) &&
2797 sta->crypt && tx->host_encrypt) {
2798 tx->crypt = sta->crypt;
2799 tx->sta_ptr = sta; /* hostap_handle_sta_release() will
2800 * be called to release sta info
2803 atomic_dec(&sta->users);
2810 void hostap_handle_sta_release(void *ptr)
2812 struct sta_info *sta = ptr;
2813 atomic_dec(&sta->users);
2817 /* Called only as a tasklet (software IRQ) */
2818 void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb)
2820 struct sta_info *sta;
2821 struct ieee80211_hdr *hdr;
2822 struct hostap_skb_tx_data *meta;
2824 hdr = (struct ieee80211_hdr *) skb->data;
2825 meta = (struct hostap_skb_tx_data *) skb->cb;
2827 spin_lock(&local->ap->sta_table_lock);
2828 sta = ap_get_sta(local->ap, hdr->addr1);
2830 spin_unlock(&local->ap->sta_table_lock);
2831 PDEBUG(DEBUG_AP, "%s: Could not find STA %pM"
2832 " for this TX error (@%lu)\n",
2833 local->dev->name, hdr->addr1, jiffies);
2837 sta->tx_since_last_failure = 0;
2838 sta->tx_consecutive_exc++;
2840 if (sta->tx_consecutive_exc >= WLAN_RATE_DECREASE_THRESHOLD &&
2841 sta->tx_rate_idx > 0 && meta->rate <= sta->tx_rate) {
2842 /* use next lower rate */
2844 old = rate = sta->tx_rate_idx;
2847 if (ap_tx_rate_ok(rate, sta, local)) {
2848 sta->tx_rate_idx = rate;
2852 if (old != sta->tx_rate_idx) {
2853 switch (sta->tx_rate_idx) {
2854 case 0: sta->tx_rate = 10; break;
2855 case 1: sta->tx_rate = 20; break;
2856 case 2: sta->tx_rate = 55; break;
2857 case 3: sta->tx_rate = 110; break;
2858 default: sta->tx_rate = 0; break;
2861 "%s: STA %pM TX rate lowered to %d\n",
2862 local->dev->name, sta->addr, sta->tx_rate);
2864 sta->tx_consecutive_exc = 0;
2866 spin_unlock(&local->ap->sta_table_lock);
2870 static void hostap_update_sta_ps2(local_info_t *local, struct sta_info *sta,
2871 int pwrmgt, int type, int stype)
2873 if (pwrmgt && !(sta->flags & WLAN_STA_PS)) {
2874 sta->flags |= WLAN_STA_PS;
2875 PDEBUG(DEBUG_PS2, "STA %pM changed to use PS "
2876 "mode (type=0x%02X, stype=0x%02X)\n",
2877 sta->addr, type >> 2, stype >> 4);
2878 } else if (!pwrmgt && (sta->flags & WLAN_STA_PS)) {
2879 sta->flags &= ~WLAN_STA_PS;
2880 PDEBUG(DEBUG_PS2, "STA %pM changed to not use "
2881 "PS mode (type=0x%02X, stype=0x%02X)\n",
2882 sta->addr, type >> 2, stype >> 4);
2883 if (type != IEEE80211_FTYPE_CTL ||
2884 stype != IEEE80211_STYPE_PSPOLL)
2885 schedule_packet_send(local, sta);
2890 /* Called only as a tasklet (software IRQ). Called for each RX frame to update
2891 * STA power saving state. pwrmgt is a flag from 802.11 frame_control field. */
2892 int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr)
2894 struct sta_info *sta;
2897 spin_lock(&local->ap->sta_table_lock);
2898 sta = ap_get_sta(local->ap, hdr->addr2);
2900 atomic_inc(&sta->users);
2901 spin_unlock(&local->ap->sta_table_lock);
2906 fc = le16_to_cpu(hdr->frame_control);
2907 hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM,
2908 fc & IEEE80211_FCTL_FTYPE,
2909 fc & IEEE80211_FCTL_STYPE);
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 *hdr;
2928 if (local->ap == NULL)
2929 return AP_RX_CONTINUE;
2931 hdr = (struct ieee80211_hdr *) skb->data;
2933 fc = le16_to_cpu(hdr->frame_control);
2934 type = fc & IEEE80211_FCTL_FTYPE;
2935 stype = fc & IEEE80211_FCTL_STYPE;
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 %pM"
2958 " (type=0x%02x, subtype=0x%02x)\n",
2959 dev->name, 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 frame"
2993 " without ToDS from not associated STA %pM\n",
2994 dev->name, hdr->addr2);
2995 hostap_rx(dev, skb, rx_stats);
2996 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
3000 } else if (stype == IEEE80211_STYPE_NULLFUNC) {
3001 /* At least Lucent cards seem to send periodic nullfunc
3002 * frames with ToDS. Let these through to update SQ
3003 * stats and PS state. Nullfunc frames do not contain
3004 * any data and they will be dropped below. */
3006 /* If BSSID (Addr3) is foreign, this frame is a normal
3007 * broadcast frame from an IBSS network. Drop it silently.
3008 * If BSSID is own, report the dropping of this frame. */
3009 if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
3010 printk(KERN_DEBUG "%s: dropped received packet from %pM"
3011 " with no ToDS flag "
3012 "(type=0x%02x, subtype=0x%02x)\n", dev->name,
3013 hdr->addr2, type >> 2, stype >> 4);
3014 hostap_dump_rx_80211(dev->name, skb, rx_stats);
3021 hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM,
3025 sta->rx_bytes += skb->len;
3026 sta->last_rx = jiffies;
3029 if (local->ap->nullfunc_ack && stype == IEEE80211_STYPE_NULLFUNC &&
3030 fc & IEEE80211_FCTL_TODS) {
3031 if (local->hostapd) {
3032 prism2_rx_80211(local->apdev, skb, rx_stats,
3033 PRISM2_RX_NULLFUNC_ACK);
3034 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3036 /* some STA f/w's seem to require control::ACK frame
3037 * for data::nullfunc, but Prism2 f/w 0.8.0 (at least
3038 * from Compaq) does not send this.. Try to generate
3039 * ACK for these frames from the host driver to make
3040 * power saving work with, e.g., Lucent WaveLAN f/w */
3041 hostap_rx(dev, skb, rx_stats);
3042 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
3050 atomic_dec(&sta->users);
3056 /* Called only as a tasklet (software IRQ) */
3057 int hostap_handle_sta_crypto(local_info_t *local,
3058 struct ieee80211_hdr *hdr,
3059 struct lib80211_crypt_data **crypt,
3062 struct sta_info *sta;
3064 spin_lock(&local->ap->sta_table_lock);
3065 sta = ap_get_sta(local->ap, hdr->addr2);
3067 atomic_inc(&sta->users);
3068 spin_unlock(&local->ap->sta_table_lock);
3074 *crypt = sta->crypt;
3076 /* hostap_handle_sta_release() will be called to release STA
3079 atomic_dec(&sta->users);
3085 /* Called only as a tasklet (software IRQ) */
3086 int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr)
3088 struct sta_info *sta;
3091 spin_lock(&ap->sta_table_lock);
3092 sta = ap_get_sta(ap, sta_addr);
3093 if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap)
3095 spin_unlock(&ap->sta_table_lock);
3101 /* Called only as a tasklet (software IRQ) */
3102 int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr)
3104 struct sta_info *sta;
3107 spin_lock(&ap->sta_table_lock);
3108 sta = ap_get_sta(ap, sta_addr);
3109 if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap &&
3110 ((sta->flags & WLAN_STA_AUTHORIZED) ||
3111 ap->local->ieee_802_1x == 0))
3113 spin_unlock(&ap->sta_table_lock);
3119 /* Called only as a tasklet (software IRQ) */
3120 int hostap_add_sta(struct ap_data *ap, u8 *sta_addr)
3122 struct sta_info *sta;
3128 spin_lock(&ap->sta_table_lock);
3129 sta = ap_get_sta(ap, sta_addr);
3132 spin_unlock(&ap->sta_table_lock);
3135 sta = ap_add_sta(ap, sta_addr);
3138 sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
3140 memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
3141 /* No way of knowing which rates are supported since we did not
3142 * get supported rates element from beacon/assoc req. Assume
3143 * that remote end supports all 802.11b rates. */
3144 sta->supported_rates[0] = 0x82;
3145 sta->supported_rates[1] = 0x84;
3146 sta->supported_rates[2] = 0x0b;
3147 sta->supported_rates[3] = 0x16;
3148 sta->tx_supp_rates = WLAN_RATE_1M | WLAN_RATE_2M |
3149 WLAN_RATE_5M5 | WLAN_RATE_11M;
3151 sta->tx_max_rate = sta->tx_rate_idx = 3;
3158 /* Called only as a tasklet (software IRQ) */
3159 int hostap_update_rx_stats(struct ap_data *ap,
3160 struct ieee80211_hdr *hdr,
3161 struct hostap_80211_rx_status *rx_stats)
3163 struct sta_info *sta;
3168 spin_lock(&ap->sta_table_lock);
3169 sta = ap_get_sta(ap, hdr->addr2);
3171 sta->last_rx_silence = rx_stats->noise;
3172 sta->last_rx_signal = rx_stats->signal;
3173 sta->last_rx_rate = rx_stats->rate;
3174 sta->last_rx_updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
3175 if (rx_stats->rate == 10)
3177 else if (rx_stats->rate == 20)
3179 else if (rx_stats->rate == 55)
3181 else if (rx_stats->rate == 110)
3184 spin_unlock(&ap->sta_table_lock);
3186 return sta ? 0 : -1;
3190 void hostap_update_rates(local_info_t *local)
3192 struct sta_info *sta;
3193 struct ap_data *ap = local->ap;
3198 spin_lock_bh(&ap->sta_table_lock);
3199 list_for_each_entry(sta, &ap->sta_list, list) {
3200 prism2_check_tx_rates(sta);
3202 spin_unlock_bh(&ap->sta_table_lock);
3206 void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent,
3207 struct lib80211_crypt_data ***crypt)
3209 struct sta_info *sta;
3211 spin_lock_bh(&ap->sta_table_lock);
3212 sta = ap_get_sta(ap, addr);
3214 atomic_inc(&sta->users);
3215 spin_unlock_bh(&ap->sta_table_lock);
3217 if (!sta && permanent)
3218 sta = ap_add_sta(ap, addr);
3224 sta->flags |= WLAN_STA_PERM;
3226 *crypt = &sta->crypt;
3232 void hostap_add_wds_links(local_info_t *local)
3234 struct ap_data *ap = local->ap;
3235 struct sta_info *sta;
3237 spin_lock_bh(&ap->sta_table_lock);
3238 list_for_each_entry(sta, &ap->sta_list, list) {
3240 hostap_wds_link_oper(local, sta->addr, WDS_ADD);
3242 spin_unlock_bh(&ap->sta_table_lock);
3244 schedule_work(&local->ap->wds_oper_queue);
3248 void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type)
3250 struct wds_oper_data *entry;
3252 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
3255 memcpy(entry->addr, addr, ETH_ALEN);
3257 spin_lock_bh(&local->lock);
3258 entry->next = local->ap->wds_oper_entries;
3259 local->ap->wds_oper_entries = entry;
3260 spin_unlock_bh(&local->lock);
3262 schedule_work(&local->ap->wds_oper_queue);
3266 EXPORT_SYMBOL(hostap_init_data);
3267 EXPORT_SYMBOL(hostap_init_ap_proc);
3268 EXPORT_SYMBOL(hostap_free_data);
3269 EXPORT_SYMBOL(hostap_check_sta_fw_version);
3270 EXPORT_SYMBOL(hostap_handle_sta_tx_exc);
3271 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3272 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */