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>
24 #include "hostap_wlan.h"
26 #include "hostap_ap.h"
28 static int other_ap_policy[MAX_PARM_DEVICES] = { AP_OTHER_AP_SKIP_ALL,
30 module_param_array(other_ap_policy, int, NULL, 0444);
31 MODULE_PARM_DESC(other_ap_policy, "Other AP beacon monitoring policy (0-3)");
33 static int ap_max_inactivity[MAX_PARM_DEVICES] = { AP_MAX_INACTIVITY_SEC,
35 module_param_array(ap_max_inactivity, int, NULL, 0444);
36 MODULE_PARM_DESC(ap_max_inactivity, "AP timeout (in seconds) for station "
39 static int ap_bridge_packets[MAX_PARM_DEVICES] = { 1, DEF_INTS };
40 module_param_array(ap_bridge_packets, int, NULL, 0444);
41 MODULE_PARM_DESC(ap_bridge_packets, "Bridge packets directly between "
44 static int autom_ap_wds[MAX_PARM_DEVICES] = { 0, DEF_INTS };
45 module_param_array(autom_ap_wds, int, NULL, 0444);
46 MODULE_PARM_DESC(autom_ap_wds, "Add WDS connections to other APs "
50 static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta);
51 static void hostap_event_expired_sta(struct net_device *dev,
52 struct sta_info *sta);
53 static void handle_add_proc_queue(struct work_struct *work);
55 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
56 static void handle_wds_oper_queue(struct work_struct *work);
57 static void prism2_send_mgmt(struct net_device *dev,
58 u16 type_subtype, char *body,
59 int body_len, u8 *addr, u16 tx_cb_idx);
60 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
63 #ifndef PRISM2_NO_PROCFS_DEBUG
64 static int ap_debug_proc_read(char *page, char **start, off_t off,
65 int count, int *eof, void *data)
68 struct ap_data *ap = (struct ap_data *) data;
75 p += sprintf(p, "BridgedUnicastFrames=%u\n", ap->bridged_unicast);
76 p += sprintf(p, "BridgedMulticastFrames=%u\n", ap->bridged_multicast);
77 p += sprintf(p, "max_inactivity=%u\n", ap->max_inactivity / HZ);
78 p += sprintf(p, "bridge_packets=%u\n", ap->bridge_packets);
79 p += sprintf(p, "nullfunc_ack=%u\n", ap->nullfunc_ack);
80 p += sprintf(p, "autom_ap_wds=%u\n", ap->autom_ap_wds);
81 p += sprintf(p, "auth_algs=%u\n", ap->local->auth_algs);
82 p += sprintf(p, "tx_drop_nonassoc=%u\n", ap->tx_drop_nonassoc);
86 #endif /* PRISM2_NO_PROCFS_DEBUG */
89 static void ap_sta_hash_add(struct ap_data *ap, struct sta_info *sta)
91 sta->hnext = ap->sta_hash[STA_HASH(sta->addr)];
92 ap->sta_hash[STA_HASH(sta->addr)] = sta;
95 static void ap_sta_hash_del(struct ap_data *ap, struct sta_info *sta)
99 s = ap->sta_hash[STA_HASH(sta->addr)];
100 if (s == NULL) return;
101 if (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) {
102 ap->sta_hash[STA_HASH(sta->addr)] = s->hnext;
106 while (s->hnext != NULL && memcmp(s->hnext->addr, sta->addr, ETH_ALEN)
109 if (s->hnext != NULL)
110 s->hnext = s->hnext->hnext;
112 printk("AP: could not remove STA %pM from hash table\n",
116 static void ap_free_sta(struct ap_data *ap, struct sta_info *sta)
118 if (sta->ap && sta->local)
119 hostap_event_expired_sta(sta->local->dev, sta);
121 if (ap->proc != NULL) {
123 sprintf(name, "%pM", sta->addr);
124 remove_proc_entry(name, ap->proc);
128 sta->crypt->ops->deinit(sta->crypt->priv);
133 skb_queue_purge(&sta->tx_buf);
136 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
138 ap->sta_aid[sta->aid - 1] = NULL;
140 if (!sta->ap && sta->u.sta.challenge)
141 kfree(sta->u.sta.challenge);
142 del_timer(&sta->timer);
143 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
149 static void hostap_set_tim(local_info_t *local, int aid, int set)
151 if (local->func->set_tim)
152 local->func->set_tim(local->dev, aid, set);
156 static void hostap_event_new_sta(struct net_device *dev, struct sta_info *sta)
158 union iwreq_data wrqu;
159 memset(&wrqu, 0, sizeof(wrqu));
160 memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN);
161 wrqu.addr.sa_family = ARPHRD_ETHER;
162 wireless_send_event(dev, IWEVREGISTERED, &wrqu, NULL);
166 static void hostap_event_expired_sta(struct net_device *dev,
167 struct sta_info *sta)
169 union iwreq_data wrqu;
170 memset(&wrqu, 0, sizeof(wrqu));
171 memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN);
172 wrqu.addr.sa_family = ARPHRD_ETHER;
173 wireless_send_event(dev, IWEVEXPIRED, &wrqu, NULL);
177 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
179 static void ap_handle_timer(unsigned long data)
181 struct sta_info *sta = (struct sta_info *) data;
184 unsigned long next_time = 0;
187 if (sta == NULL || sta->local == NULL || sta->local->ap == NULL) {
188 PDEBUG(DEBUG_AP, "ap_handle_timer() called with NULL data\n");
194 was_assoc = sta->flags & WLAN_STA_ASSOC;
196 if (atomic_read(&sta->users) != 0)
197 next_time = jiffies + HZ;
198 else if ((sta->flags & WLAN_STA_PERM) && !(sta->flags & WLAN_STA_AUTH))
199 next_time = jiffies + ap->max_inactivity;
201 if (time_before(jiffies, sta->last_rx + ap->max_inactivity)) {
202 /* station activity detected; reset timeout state */
203 sta->timeout_next = STA_NULLFUNC;
204 next_time = sta->last_rx + ap->max_inactivity;
205 } else if (sta->timeout_next == STA_DISASSOC &&
206 !(sta->flags & WLAN_STA_PENDING_POLL)) {
207 /* STA ACKed data nullfunc frame poll */
208 sta->timeout_next = STA_NULLFUNC;
209 next_time = jiffies + ap->max_inactivity;
213 sta->timer.expires = next_time;
214 add_timer(&sta->timer);
219 sta->timeout_next = STA_DEAUTH;
221 if (sta->timeout_next == STA_DEAUTH && !(sta->flags & WLAN_STA_PERM)) {
222 spin_lock(&ap->sta_table_lock);
223 ap_sta_hash_del(ap, sta);
224 list_del(&sta->list);
225 spin_unlock(&ap->sta_table_lock);
226 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
227 } else if (sta->timeout_next == STA_DISASSOC)
228 sta->flags &= ~WLAN_STA_ASSOC;
230 if (was_assoc && !(sta->flags & WLAN_STA_ASSOC) && !sta->ap)
231 hostap_event_expired_sta(local->dev, sta);
233 if (sta->timeout_next == STA_DEAUTH && sta->aid > 0 &&
234 !skb_queue_empty(&sta->tx_buf)) {
235 hostap_set_tim(local, sta->aid, 0);
236 sta->flags &= ~WLAN_STA_TIM;
240 if (ap->autom_ap_wds) {
241 PDEBUG(DEBUG_AP, "%s: removing automatic WDS "
242 "connection to AP %pM\n",
243 local->dev->name, sta->addr);
244 hostap_wds_link_oper(local, sta->addr, WDS_DEL);
246 } else if (sta->timeout_next == STA_NULLFUNC) {
247 /* send data frame to poll STA and check whether this frame
249 /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but
250 * it is apparently not retried so TX Exc events are not
252 sta->flags |= WLAN_STA_PENDING_POLL;
253 prism2_send_mgmt(local->dev, IEEE80211_FTYPE_DATA |
254 IEEE80211_STYPE_DATA, NULL, 0,
255 sta->addr, ap->tx_callback_poll);
257 int deauth = sta->timeout_next == STA_DEAUTH;
259 PDEBUG(DEBUG_AP, "%s: sending %s info to STA %pM"
260 "(last=%lu, jiffies=%lu)\n",
262 deauth ? "deauthentication" : "disassociation",
263 sta->addr, sta->last_rx, jiffies);
265 resp = cpu_to_le16(deauth ? WLAN_REASON_PREV_AUTH_NOT_VALID :
266 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
267 prism2_send_mgmt(local->dev, IEEE80211_FTYPE_MGMT |
268 (deauth ? IEEE80211_STYPE_DEAUTH :
269 IEEE80211_STYPE_DISASSOC),
270 (char *) &resp, 2, sta->addr, 0);
273 if (sta->timeout_next == STA_DEAUTH) {
274 if (sta->flags & WLAN_STA_PERM) {
275 PDEBUG(DEBUG_AP, "%s: STA %pM"
276 " would have been removed, "
277 "but it has 'perm' flag\n",
278 local->dev->name, sta->addr);
280 ap_free_sta(ap, sta);
284 if (sta->timeout_next == STA_NULLFUNC) {
285 sta->timeout_next = STA_DISASSOC;
286 sta->timer.expires = jiffies + AP_DISASSOC_DELAY;
288 sta->timeout_next = STA_DEAUTH;
289 sta->timer.expires = jiffies + AP_DEAUTH_DELAY;
292 add_timer(&sta->timer);
296 void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap,
303 PDEBUG(DEBUG_AP, "%s: Deauthenticate all stations\n", dev->name);
304 memset(addr, 0xff, ETH_ALEN);
306 resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
308 /* deauth message sent; try to resend it few times; the message is
309 * broadcast, so it may be delayed until next DTIM; there is not much
310 * else we can do at this point since the driver is going to be shut
312 for (i = 0; i < 5; i++) {
313 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT |
314 IEEE80211_STYPE_DEAUTH,
315 (char *) &resp, 2, addr, 0);
317 if (!resend || ap->num_sta <= 0)
325 static int ap_control_proc_read(char *page, char **start, off_t off,
326 int count, int *eof, void *data)
329 struct ap_data *ap = (struct ap_data *) data;
331 struct mac_entry *entry;
338 switch (ap->mac_restrictions.policy) {
339 case MAC_POLICY_OPEN:
342 case MAC_POLICY_ALLOW:
343 policy_txt = "allow";
345 case MAC_POLICY_DENY:
349 policy_txt = "unknown";
352 p += sprintf(p, "MAC policy: %s\n", policy_txt);
353 p += sprintf(p, "MAC entries: %u\n", ap->mac_restrictions.entries);
354 p += sprintf(p, "MAC list:\n");
355 spin_lock_bh(&ap->mac_restrictions.lock);
356 list_for_each_entry(entry, &ap->mac_restrictions.mac_list, list) {
357 if (p - page > PAGE_SIZE - 80) {
358 p += sprintf(p, "All entries did not fit one page.\n");
362 p += sprintf(p, "%pM\n", entry->addr);
364 spin_unlock_bh(&ap->mac_restrictions.lock);
370 int ap_control_add_mac(struct mac_restrictions *mac_restrictions, u8 *mac)
372 struct mac_entry *entry;
374 entry = kmalloc(sizeof(struct mac_entry), GFP_KERNEL);
378 memcpy(entry->addr, mac, ETH_ALEN);
380 spin_lock_bh(&mac_restrictions->lock);
381 list_add_tail(&entry->list, &mac_restrictions->mac_list);
382 mac_restrictions->entries++;
383 spin_unlock_bh(&mac_restrictions->lock);
389 int ap_control_del_mac(struct mac_restrictions *mac_restrictions, u8 *mac)
391 struct list_head *ptr;
392 struct mac_entry *entry;
394 spin_lock_bh(&mac_restrictions->lock);
395 for (ptr = mac_restrictions->mac_list.next;
396 ptr != &mac_restrictions->mac_list; ptr = ptr->next) {
397 entry = list_entry(ptr, struct mac_entry, list);
399 if (memcmp(entry->addr, mac, ETH_ALEN) == 0) {
402 mac_restrictions->entries--;
403 spin_unlock_bh(&mac_restrictions->lock);
407 spin_unlock_bh(&mac_restrictions->lock);
412 static int ap_control_mac_deny(struct mac_restrictions *mac_restrictions,
415 struct mac_entry *entry;
418 if (mac_restrictions->policy == MAC_POLICY_OPEN)
421 spin_lock_bh(&mac_restrictions->lock);
422 list_for_each_entry(entry, &mac_restrictions->mac_list, list) {
423 if (memcmp(entry->addr, mac, ETH_ALEN) == 0) {
428 spin_unlock_bh(&mac_restrictions->lock);
430 if (mac_restrictions->policy == MAC_POLICY_ALLOW)
437 void ap_control_flush_macs(struct mac_restrictions *mac_restrictions)
439 struct list_head *ptr, *n;
440 struct mac_entry *entry;
442 if (mac_restrictions->entries == 0)
445 spin_lock_bh(&mac_restrictions->lock);
446 for (ptr = mac_restrictions->mac_list.next, n = ptr->next;
447 ptr != &mac_restrictions->mac_list;
448 ptr = n, n = ptr->next) {
449 entry = list_entry(ptr, struct mac_entry, list);
453 mac_restrictions->entries = 0;
454 spin_unlock_bh(&mac_restrictions->lock);
458 int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev, u8 *mac)
460 struct sta_info *sta;
463 spin_lock_bh(&ap->sta_table_lock);
464 sta = ap_get_sta(ap, mac);
466 ap_sta_hash_del(ap, sta);
467 list_del(&sta->list);
469 spin_unlock_bh(&ap->sta_table_lock);
474 resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
475 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH,
476 (char *) &resp, 2, sta->addr, 0);
478 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap)
479 hostap_event_expired_sta(dev, sta);
481 ap_free_sta(ap, sta);
486 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
489 void ap_control_kickall(struct ap_data *ap)
491 struct list_head *ptr, *n;
492 struct sta_info *sta;
494 spin_lock_bh(&ap->sta_table_lock);
495 for (ptr = ap->sta_list.next, n = ptr->next; ptr != &ap->sta_list;
496 ptr = n, n = ptr->next) {
497 sta = list_entry(ptr, struct sta_info, list);
498 ap_sta_hash_del(ap, sta);
499 list_del(&sta->list);
500 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
501 hostap_event_expired_sta(sta->local->dev, sta);
502 ap_free_sta(ap, sta);
504 spin_unlock_bh(&ap->sta_table_lock);
508 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
510 #define PROC_LIMIT (PAGE_SIZE - 80)
512 static int prism2_ap_proc_read(char *page, char **start, off_t off,
513 int count, int *eof, void *data)
516 struct ap_data *ap = (struct ap_data *) data;
517 struct sta_info *sta;
520 if (off > PROC_LIMIT) {
525 p += sprintf(p, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n");
526 spin_lock_bh(&ap->sta_table_lock);
527 list_for_each_entry(sta, &ap->sta_list, list) {
531 p += sprintf(p, "%pM %d %d %d %d '",
533 sta->u.ap.channel, sta->last_rx_signal,
534 sta->last_rx_silence, sta->last_rx_rate);
535 for (i = 0; i < sta->u.ap.ssid_len; i++)
536 p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 &&
537 sta->u.ap.ssid[i] < 127) ?
540 p += sprintf(p, "'");
541 if (sta->capability & WLAN_CAPABILITY_ESS)
542 p += sprintf(p, " [ESS]");
543 if (sta->capability & WLAN_CAPABILITY_IBSS)
544 p += sprintf(p, " [IBSS]");
545 if (sta->capability & WLAN_CAPABILITY_PRIVACY)
546 p += sprintf(p, " [WEP]");
547 p += sprintf(p, "\n");
549 if ((p - page) > PROC_LIMIT) {
550 printk(KERN_DEBUG "hostap: ap proc did not fit\n");
554 spin_unlock_bh(&ap->sta_table_lock);
556 if ((p - page) <= off) {
563 return (p - page - off);
565 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
568 void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver)
573 if (sta_fw_ver == PRISM2_FW_VER(0,8,0)) {
574 PDEBUG(DEBUG_AP, "Using data::nullfunc ACK workaround - "
575 "firmware upgrade recommended\n");
576 ap->nullfunc_ack = 1;
578 ap->nullfunc_ack = 0;
580 if (sta_fw_ver == PRISM2_FW_VER(1,4,2)) {
581 printk(KERN_WARNING "%s: Warning: secondary station firmware "
582 "version 1.4.2 does not seem to work in Host AP mode\n",
583 ap->local->dev->name);
588 /* Called only as a tasklet (software IRQ) */
589 static void hostap_ap_tx_cb(struct sk_buff *skb, int ok, void *data)
591 struct ap_data *ap = data;
592 struct ieee80211_hdr *hdr;
594 if (!ap->local->hostapd || !ap->local->apdev) {
599 /* Pass the TX callback frame to the hostapd; use 802.11 header version
600 * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */
602 hdr = (struct ieee80211_hdr *) skb->data;
603 hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_VERS);
604 hdr->frame_control |= cpu_to_le16(ok ? BIT(1) : BIT(0));
606 skb->dev = ap->local->apdev;
607 skb_pull(skb, hostap_80211_get_hdrlen(hdr->frame_control));
608 skb->pkt_type = PACKET_OTHERHOST;
609 skb->protocol = cpu_to_be16(ETH_P_802_2);
610 memset(skb->cb, 0, sizeof(skb->cb));
615 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
616 /* Called only as a tasklet (software IRQ) */
617 static void hostap_ap_tx_cb_auth(struct sk_buff *skb, int ok, void *data)
619 struct ap_data *ap = data;
620 struct net_device *dev = ap->local->dev;
621 struct ieee80211_hdr *hdr;
622 u16 auth_alg, auth_transaction, status;
624 struct sta_info *sta = NULL;
627 if (ap->local->hostapd) {
632 hdr = (struct ieee80211_hdr *) skb->data;
633 if (!ieee80211_is_auth(hdr->frame_control) ||
634 skb->len < IEEE80211_MGMT_HDR_LEN + 6) {
635 printk(KERN_DEBUG "%s: hostap_ap_tx_cb_auth received invalid "
636 "frame\n", dev->name);
641 pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
642 auth_alg = le16_to_cpu(*pos++);
643 auth_transaction = le16_to_cpu(*pos++);
644 status = le16_to_cpu(*pos++);
647 txt = "frame was not ACKed";
651 spin_lock(&ap->sta_table_lock);
652 sta = ap_get_sta(ap, hdr->addr1);
654 atomic_inc(&sta->users);
655 spin_unlock(&ap->sta_table_lock);
658 txt = "STA not found";
662 if (status == WLAN_STATUS_SUCCESS &&
663 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
664 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
665 txt = "STA authenticated";
666 sta->flags |= WLAN_STA_AUTH;
667 sta->last_auth = jiffies;
668 } else if (status != WLAN_STATUS_SUCCESS)
669 txt = "authentication failed";
673 atomic_dec(&sta->users);
675 PDEBUG(DEBUG_AP, "%s: %pM auth_cb - alg=%d "
676 "trans#=%d status=%d - %s\n",
677 dev->name, hdr->addr1,
678 auth_alg, auth_transaction, status, txt);
684 /* Called only as a tasklet (software IRQ) */
685 static void hostap_ap_tx_cb_assoc(struct sk_buff *skb, int ok, void *data)
687 struct ap_data *ap = data;
688 struct net_device *dev = ap->local->dev;
689 struct ieee80211_hdr *hdr;
692 struct sta_info *sta = NULL;
695 if (ap->local->hostapd) {
700 hdr = (struct ieee80211_hdr *) skb->data;
701 fc = le16_to_cpu(hdr->frame_control);
702 if ((!ieee80211_is_assoc_resp(hdr->frame_control) &&
703 !ieee80211_is_reassoc_resp(hdr->frame_control)) ||
704 skb->len < IEEE80211_MGMT_HDR_LEN + 4) {
705 printk(KERN_DEBUG "%s: hostap_ap_tx_cb_assoc received invalid "
706 "frame\n", dev->name);
712 txt = "frame was not ACKed";
716 spin_lock(&ap->sta_table_lock);
717 sta = ap_get_sta(ap, hdr->addr1);
719 atomic_inc(&sta->users);
720 spin_unlock(&ap->sta_table_lock);
723 txt = "STA not found";
727 pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
729 status = le16_to_cpu(*pos++);
730 if (status == WLAN_STATUS_SUCCESS) {
731 if (!(sta->flags & WLAN_STA_ASSOC))
732 hostap_event_new_sta(dev, sta);
733 txt = "STA associated";
734 sta->flags |= WLAN_STA_ASSOC;
735 sta->last_assoc = jiffies;
737 txt = "association failed";
741 atomic_dec(&sta->users);
743 PDEBUG(DEBUG_AP, "%s: %pM assoc_cb - %s\n",
744 dev->name, hdr->addr1, txt);
749 /* Called only as a tasklet (software IRQ); TX callback for poll frames used
750 * in verifying whether the STA is still present. */
751 static void hostap_ap_tx_cb_poll(struct sk_buff *skb, int ok, void *data)
753 struct ap_data *ap = data;
754 struct ieee80211_hdr *hdr;
755 struct sta_info *sta;
759 hdr = (struct ieee80211_hdr *) skb->data;
761 spin_lock(&ap->sta_table_lock);
762 sta = ap_get_sta(ap, hdr->addr1);
764 sta->flags &= ~WLAN_STA_PENDING_POLL;
765 spin_unlock(&ap->sta_table_lock);
768 "%s: STA %pM did not ACK activity poll frame\n",
769 ap->local->dev->name, hdr->addr1);
775 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
778 void hostap_init_data(local_info_t *local)
780 struct ap_data *ap = local->ap;
783 printk(KERN_WARNING "hostap_init_data: ap == NULL\n");
786 memset(ap, 0, sizeof(struct ap_data));
789 ap->ap_policy = GET_INT_PARM(other_ap_policy, local->card_idx);
790 ap->bridge_packets = GET_INT_PARM(ap_bridge_packets, local->card_idx);
792 GET_INT_PARM(ap_max_inactivity, local->card_idx) * HZ;
793 ap->autom_ap_wds = GET_INT_PARM(autom_ap_wds, local->card_idx);
795 spin_lock_init(&ap->sta_table_lock);
796 INIT_LIST_HEAD(&ap->sta_list);
798 /* Initialize task queue structure for AP management */
799 INIT_WORK(&local->ap->add_sta_proc_queue, handle_add_proc_queue);
801 ap->tx_callback_idx =
802 hostap_tx_callback_register(local, hostap_ap_tx_cb, ap);
803 if (ap->tx_callback_idx == 0)
804 printk(KERN_WARNING "%s: failed to register TX callback for "
805 "AP\n", local->dev->name);
806 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
807 INIT_WORK(&local->ap->wds_oper_queue, handle_wds_oper_queue);
809 ap->tx_callback_auth =
810 hostap_tx_callback_register(local, hostap_ap_tx_cb_auth, ap);
811 ap->tx_callback_assoc =
812 hostap_tx_callback_register(local, hostap_ap_tx_cb_assoc, ap);
813 ap->tx_callback_poll =
814 hostap_tx_callback_register(local, hostap_ap_tx_cb_poll, ap);
815 if (ap->tx_callback_auth == 0 || ap->tx_callback_assoc == 0 ||
816 ap->tx_callback_poll == 0)
817 printk(KERN_WARNING "%s: failed to register TX callback for "
818 "AP\n", local->dev->name);
820 spin_lock_init(&ap->mac_restrictions.lock);
821 INIT_LIST_HEAD(&ap->mac_restrictions.mac_list);
822 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
828 void hostap_init_ap_proc(local_info_t *local)
830 struct ap_data *ap = local->ap;
832 ap->proc = local->proc;
833 if (ap->proc == NULL)
836 #ifndef PRISM2_NO_PROCFS_DEBUG
837 create_proc_read_entry("ap_debug", 0, ap->proc,
838 ap_debug_proc_read, ap);
839 #endif /* PRISM2_NO_PROCFS_DEBUG */
841 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
842 create_proc_read_entry("ap_control", 0, ap->proc,
843 ap_control_proc_read, ap);
844 create_proc_read_entry("ap", 0, ap->proc,
845 prism2_ap_proc_read, ap);
846 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
851 void hostap_free_data(struct ap_data *ap)
853 struct sta_info *n, *sta;
855 if (ap == NULL || !ap->initialized) {
856 printk(KERN_DEBUG "hostap_free_data: ap has not yet been "
857 "initialized - skip resource freeing\n");
861 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
863 ap->crypt->deinit(ap->crypt_priv);
864 ap->crypt = ap->crypt_priv = NULL;
865 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
867 list_for_each_entry_safe(sta, n, &ap->sta_list, list) {
868 ap_sta_hash_del(ap, sta);
869 list_del(&sta->list);
870 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
871 hostap_event_expired_sta(sta->local->dev, sta);
872 ap_free_sta(ap, sta);
875 #ifndef PRISM2_NO_PROCFS_DEBUG
876 if (ap->proc != NULL) {
877 remove_proc_entry("ap_debug", ap->proc);
879 #endif /* PRISM2_NO_PROCFS_DEBUG */
881 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
882 if (ap->proc != NULL) {
883 remove_proc_entry("ap", ap->proc);
884 remove_proc_entry("ap_control", ap->proc);
886 ap_control_flush_macs(&ap->mac_restrictions);
887 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
893 /* caller should have mutex for AP STA list handling */
894 static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta)
898 s = ap->sta_hash[STA_HASH(sta)];
899 while (s != NULL && memcmp(s->addr, sta, ETH_ALEN) != 0)
905 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
907 /* Called from timer handler and from scheduled AP queue handlers */
908 static void prism2_send_mgmt(struct net_device *dev,
909 u16 type_subtype, char *body,
910 int body_len, u8 *addr, u16 tx_cb_idx)
912 struct hostap_interface *iface;
914 struct ieee80211_hdr *hdr;
917 struct hostap_skb_tx_data *meta;
920 iface = netdev_priv(dev);
921 local = iface->local;
922 dev = local->dev; /* always use master radio device */
923 iface = netdev_priv(dev);
925 if (!(dev->flags & IFF_UP)) {
926 PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt - device is not UP - "
927 "cannot send frame\n", dev->name);
931 skb = dev_alloc_skb(sizeof(*hdr) + body_len);
933 PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt failed to allocate "
939 hdrlen = hostap_80211_get_hdrlen(cpu_to_le16(type_subtype));
940 hdr = (struct ieee80211_hdr *) skb_put(skb, hdrlen);
942 memcpy(skb_put(skb, body_len), body, body_len);
944 memset(hdr, 0, hdrlen);
946 /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11
947 * tx_control instead of using local->tx_control */
950 memcpy(hdr->addr1, addr, ETH_ALEN); /* DA / RA */
951 if (ieee80211_is_data(hdr->frame_control)) {
952 fc |= IEEE80211_FCTL_FROMDS;
953 memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* BSSID */
954 memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* SA */
955 } else if (ieee80211_is_ctl(hdr->frame_control)) {
956 /* control:ACK does not have addr2 or addr3 */
957 memset(hdr->addr2, 0, ETH_ALEN);
958 memset(hdr->addr3, 0, ETH_ALEN);
960 memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* SA */
961 memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* BSSID */
964 hdr->frame_control = cpu_to_le16(fc);
966 meta = (struct hostap_skb_tx_data *) skb->cb;
967 memset(meta, 0, sizeof(*meta));
968 meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
970 meta->tx_cb_idx = tx_cb_idx;
973 skb_reset_mac_header(skb);
974 skb_reset_network_header(skb);
977 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
980 static int prism2_sta_proc_read(char *page, char **start, off_t off,
981 int count, int *eof, void *data)
984 struct sta_info *sta = (struct sta_info *) data;
987 /* FIX: possible race condition.. the STA data could have just expired,
988 * but proc entry was still here so that the read could have started;
989 * some locking should be done here.. */
996 p += sprintf(p, "%s=%pM\nusers=%d\naid=%d\n"
997 "flags=0x%04x%s%s%s%s%s%s%s\n"
998 "capability=0x%02x\nlisten_interval=%d\nsupported_rates=",
999 sta->ap ? "AP" : "STA",
1000 sta->addr, atomic_read(&sta->users), sta->aid,
1002 sta->flags & WLAN_STA_AUTH ? " AUTH" : "",
1003 sta->flags & WLAN_STA_ASSOC ? " ASSOC" : "",
1004 sta->flags & WLAN_STA_PS ? " PS" : "",
1005 sta->flags & WLAN_STA_TIM ? " TIM" : "",
1006 sta->flags & WLAN_STA_PERM ? " PERM" : "",
1007 sta->flags & WLAN_STA_AUTHORIZED ? " AUTHORIZED" : "",
1008 sta->flags & WLAN_STA_PENDING_POLL ? " POLL" : "",
1009 sta->capability, sta->listen_interval);
1010 /* supported_rates: 500 kbit/s units with msb ignored */
1011 for (i = 0; i < sizeof(sta->supported_rates); i++)
1012 if (sta->supported_rates[i] != 0)
1013 p += sprintf(p, "%d%sMbps ",
1014 (sta->supported_rates[i] & 0x7f) / 2,
1015 sta->supported_rates[i] & 1 ? ".5" : "");
1016 p += sprintf(p, "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n"
1017 "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n"
1019 "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n"
1020 "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n"
1021 "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n"
1023 "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n",
1024 jiffies, sta->last_auth, sta->last_assoc, sta->last_rx,
1026 sta->rx_packets, sta->tx_packets, sta->rx_bytes,
1027 sta->tx_bytes, skb_queue_len(&sta->tx_buf),
1028 sta->last_rx_silence,
1029 sta->last_rx_signal, sta->last_rx_rate / 10,
1030 sta->last_rx_rate % 10 ? ".5" : "",
1031 sta->tx_rate, sta->tx_count[0], sta->tx_count[1],
1032 sta->tx_count[2], sta->tx_count[3], sta->rx_count[0],
1033 sta->rx_count[1], sta->rx_count[2], sta->rx_count[3]);
1034 if (sta->crypt && sta->crypt->ops && sta->crypt->ops->print_stats)
1035 p = sta->crypt->ops->print_stats(p, sta->crypt->priv);
1036 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1038 if (sta->u.ap.channel >= 0)
1039 p += sprintf(p, "channel=%d\n", sta->u.ap.channel);
1040 p += sprintf(p, "ssid=");
1041 for (i = 0; i < sta->u.ap.ssid_len; i++)
1042 p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 &&
1043 sta->u.ap.ssid[i] < 127) ?
1046 p += sprintf(p, "\n");
1048 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1054 static void handle_add_proc_queue(struct work_struct *work)
1056 struct ap_data *ap = container_of(work, struct ap_data,
1057 add_sta_proc_queue);
1058 struct sta_info *sta;
1060 struct add_sta_proc_data *entry, *prev;
1062 entry = ap->add_sta_proc_entries;
1063 ap->add_sta_proc_entries = NULL;
1066 spin_lock_bh(&ap->sta_table_lock);
1067 sta = ap_get_sta(ap, entry->addr);
1069 atomic_inc(&sta->users);
1070 spin_unlock_bh(&ap->sta_table_lock);
1073 sprintf(name, "%pM", sta->addr);
1074 sta->proc = create_proc_read_entry(
1076 prism2_sta_proc_read, sta);
1078 atomic_dec(&sta->users);
1082 entry = entry->next;
1088 static struct sta_info * ap_add_sta(struct ap_data *ap, u8 *addr)
1090 struct sta_info *sta;
1092 sta = kzalloc(sizeof(struct sta_info), GFP_ATOMIC);
1094 PDEBUG(DEBUG_AP, "AP: kmalloc failed\n");
1098 /* initialize STA info data */
1099 sta->local = ap->local;
1100 skb_queue_head_init(&sta->tx_buf);
1101 memcpy(sta->addr, addr, ETH_ALEN);
1103 atomic_inc(&sta->users);
1104 spin_lock_bh(&ap->sta_table_lock);
1105 list_add(&sta->list, &ap->sta_list);
1107 ap_sta_hash_add(ap, sta);
1108 spin_unlock_bh(&ap->sta_table_lock);
1111 struct add_sta_proc_data *entry;
1112 /* schedule a non-interrupt context process to add a procfs
1113 * entry for the STA since procfs code use GFP_KERNEL */
1114 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
1116 memcpy(entry->addr, sta->addr, ETH_ALEN);
1117 entry->next = ap->add_sta_proc_entries;
1118 ap->add_sta_proc_entries = entry;
1119 schedule_work(&ap->add_sta_proc_queue);
1121 printk(KERN_DEBUG "Failed to add STA proc data\n");
1124 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1125 init_timer(&sta->timer);
1126 sta->timer.expires = jiffies + ap->max_inactivity;
1127 sta->timer.data = (unsigned long) sta;
1128 sta->timer.function = ap_handle_timer;
1129 if (!ap->local->hostapd)
1130 add_timer(&sta->timer);
1131 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1137 static int ap_tx_rate_ok(int rateidx, struct sta_info *sta,
1138 local_info_t *local)
1140 if (rateidx > sta->tx_max_rate ||
1141 !(sta->tx_supp_rates & (1 << rateidx)))
1144 if (local->tx_rate_control != 0 &&
1145 !(local->tx_rate_control & (1 << rateidx)))
1152 static void prism2_check_tx_rates(struct sta_info *sta)
1156 sta->tx_supp_rates = 0;
1157 for (i = 0; i < sizeof(sta->supported_rates); i++) {
1158 if ((sta->supported_rates[i] & 0x7f) == 2)
1159 sta->tx_supp_rates |= WLAN_RATE_1M;
1160 if ((sta->supported_rates[i] & 0x7f) == 4)
1161 sta->tx_supp_rates |= WLAN_RATE_2M;
1162 if ((sta->supported_rates[i] & 0x7f) == 11)
1163 sta->tx_supp_rates |= WLAN_RATE_5M5;
1164 if ((sta->supported_rates[i] & 0x7f) == 22)
1165 sta->tx_supp_rates |= WLAN_RATE_11M;
1167 sta->tx_max_rate = sta->tx_rate = sta->tx_rate_idx = 0;
1168 if (sta->tx_supp_rates & WLAN_RATE_1M) {
1169 sta->tx_max_rate = 0;
1170 if (ap_tx_rate_ok(0, sta, sta->local)) {
1172 sta->tx_rate_idx = 0;
1175 if (sta->tx_supp_rates & WLAN_RATE_2M) {
1176 sta->tx_max_rate = 1;
1177 if (ap_tx_rate_ok(1, sta, sta->local)) {
1179 sta->tx_rate_idx = 1;
1182 if (sta->tx_supp_rates & WLAN_RATE_5M5) {
1183 sta->tx_max_rate = 2;
1184 if (ap_tx_rate_ok(2, sta, sta->local)) {
1186 sta->tx_rate_idx = 2;
1189 if (sta->tx_supp_rates & WLAN_RATE_11M) {
1190 sta->tx_max_rate = 3;
1191 if (ap_tx_rate_ok(3, sta, sta->local)) {
1193 sta->tx_rate_idx = 3;
1199 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1201 static void ap_crypt_init(struct ap_data *ap)
1203 ap->crypt = lib80211_get_crypto_ops("WEP");
1206 if (ap->crypt->init) {
1207 ap->crypt_priv = ap->crypt->init(0);
1208 if (ap->crypt_priv == NULL)
1211 u8 key[WEP_KEY_LEN];
1212 get_random_bytes(key, WEP_KEY_LEN);
1213 ap->crypt->set_key(key, WEP_KEY_LEN, NULL,
1219 if (ap->crypt == NULL) {
1220 printk(KERN_WARNING "AP could not initialize WEP: load module "
1221 "lib80211_crypt_wep.ko\n");
1226 /* Generate challenge data for shared key authentication. IEEE 802.11 specifies
1227 * that WEP algorithm is used for generating challange. This should be unique,
1228 * but otherwise there is not really need for randomness etc. Initialize WEP
1229 * with pseudo random key and then use increasing IV to get unique challenge
1232 * Called only as a scheduled task for pending AP frames.
1234 static char * ap_auth_make_challenge(struct ap_data *ap)
1237 struct sk_buff *skb;
1239 if (ap->crypt == NULL) {
1241 if (ap->crypt == NULL)
1245 tmpbuf = kmalloc(WLAN_AUTH_CHALLENGE_LEN, GFP_ATOMIC);
1246 if (tmpbuf == NULL) {
1247 PDEBUG(DEBUG_AP, "AP: kmalloc failed for challenge\n");
1251 skb = dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN +
1252 ap->crypt->extra_mpdu_prefix_len +
1253 ap->crypt->extra_mpdu_postfix_len);
1259 skb_reserve(skb, ap->crypt->extra_mpdu_prefix_len);
1260 memset(skb_put(skb, WLAN_AUTH_CHALLENGE_LEN), 0,
1261 WLAN_AUTH_CHALLENGE_LEN);
1262 if (ap->crypt->encrypt_mpdu(skb, 0, ap->crypt_priv)) {
1268 skb_copy_from_linear_data_offset(skb, ap->crypt->extra_mpdu_prefix_len,
1269 tmpbuf, WLAN_AUTH_CHALLENGE_LEN);
1276 /* Called only as a scheduled task for pending AP frames. */
1277 static void handle_authen(local_info_t *local, struct sk_buff *skb,
1278 struct hostap_80211_rx_status *rx_stats)
1280 struct net_device *dev = local->dev;
1281 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1283 struct ap_data *ap = local->ap;
1284 char body[8 + WLAN_AUTH_CHALLENGE_LEN], *challenge = NULL;
1286 u16 auth_alg, auth_transaction, status_code;
1288 u16 resp = WLAN_STATUS_SUCCESS;
1289 struct sta_info *sta = NULL;
1290 struct lib80211_crypt_data *crypt;
1293 len = skb->len - IEEE80211_MGMT_HDR_LEN;
1295 hdrlen = hostap_80211_get_hdrlen(hdr->frame_control);
1298 PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload "
1299 "(len=%d) from %pM\n", dev->name, len, hdr->addr2);
1303 spin_lock_bh(&local->ap->sta_table_lock);
1304 sta = ap_get_sta(local->ap, hdr->addr2);
1306 atomic_inc(&sta->users);
1307 spin_unlock_bh(&local->ap->sta_table_lock);
1309 if (sta && sta->crypt)
1313 if (skb->len >= hdrlen + 3)
1314 idx = skb->data[hdrlen + 3] >> 6;
1315 crypt = local->crypt_info.crypt[idx];
1318 pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
1319 auth_alg = __le16_to_cpu(*pos);
1321 auth_transaction = __le16_to_cpu(*pos);
1323 status_code = __le16_to_cpu(*pos);
1326 if (memcmp(dev->dev_addr, hdr->addr2, ETH_ALEN) == 0 ||
1327 ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) {
1328 txt = "authentication denied";
1329 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1333 if (((local->auth_algs & PRISM2_AUTH_OPEN) &&
1334 auth_alg == WLAN_AUTH_OPEN) ||
1335 ((local->auth_algs & PRISM2_AUTH_SHARED_KEY) &&
1336 crypt && auth_alg == WLAN_AUTH_SHARED_KEY)) {
1338 txt = "unsupported algorithm";
1339 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1345 if (*u == WLAN_EID_CHALLENGE) {
1346 if (*(u + 1) != WLAN_AUTH_CHALLENGE_LEN) {
1347 txt = "invalid challenge len";
1348 resp = WLAN_STATUS_CHALLENGE_FAIL;
1351 if (len - 8 < WLAN_AUTH_CHALLENGE_LEN) {
1352 txt = "challenge underflow";
1353 resp = WLAN_STATUS_CHALLENGE_FAIL;
1356 challenge = (char *) (u + 2);
1360 if (sta && sta->ap) {
1361 if (time_after(jiffies, sta->u.ap.last_beacon +
1362 (10 * sta->listen_interval * HZ) / 1024)) {
1363 PDEBUG(DEBUG_AP, "%s: no beacons received for a while,"
1364 " assuming AP %pM is now STA\n",
1365 dev->name, sta->addr);
1368 sta->u.sta.challenge = NULL;
1370 txt = "AP trying to authenticate?";
1371 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1376 if ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) ||
1377 (auth_alg == WLAN_AUTH_SHARED_KEY &&
1378 (auth_transaction == 1 ||
1379 (auth_transaction == 3 && sta != NULL &&
1380 sta->u.sta.challenge != NULL)))) {
1382 txt = "unknown authentication transaction number";
1383 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1390 if (local->ap->num_sta >= MAX_STA_COUNT) {
1391 /* FIX: might try to remove some old STAs first? */
1392 txt = "no more room for new STAs";
1393 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1397 sta = ap_add_sta(local->ap, hdr->addr2);
1399 txt = "ap_add_sta failed";
1400 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1406 case WLAN_AUTH_OPEN:
1408 /* IEEE 802.11 standard is not completely clear about
1409 * whether STA is considered authenticated after
1410 * authentication OK frame has been send or after it
1411 * has been ACKed. In order to reduce interoperability
1412 * issues, mark the STA authenticated before ACK. */
1413 sta->flags |= WLAN_STA_AUTH;
1416 case WLAN_AUTH_SHARED_KEY:
1417 if (auth_transaction == 1) {
1418 if (sta->u.sta.challenge == NULL) {
1419 sta->u.sta.challenge =
1420 ap_auth_make_challenge(local->ap);
1421 if (sta->u.sta.challenge == NULL) {
1422 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1427 if (sta->u.sta.challenge == NULL ||
1428 challenge == NULL ||
1429 memcmp(sta->u.sta.challenge, challenge,
1430 WLAN_AUTH_CHALLENGE_LEN) != 0 ||
1431 !ieee80211_has_protected(hdr->frame_control)) {
1432 txt = "challenge response incorrect";
1433 resp = WLAN_STATUS_CHALLENGE_FAIL;
1437 txt = "challenge OK - authOK";
1438 /* IEEE 802.11 standard is not completely clear about
1439 * whether STA is considered authenticated after
1440 * authentication OK frame has been send or after it
1441 * has been ACKed. In order to reduce interoperability
1442 * issues, mark the STA authenticated before ACK. */
1443 sta->flags |= WLAN_STA_AUTH;
1444 kfree(sta->u.sta.challenge);
1445 sta->u.sta.challenge = NULL;
1451 pos = (__le16 *) body;
1452 *pos = cpu_to_le16(auth_alg);
1454 *pos = cpu_to_le16(auth_transaction + 1);
1456 *pos = cpu_to_le16(resp); /* status_code */
1460 if (resp == WLAN_STATUS_SUCCESS && sta != NULL &&
1461 sta->u.sta.challenge != NULL &&
1462 auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 1) {
1463 u8 *tmp = (u8 *) pos;
1464 *tmp++ = WLAN_EID_CHALLENGE;
1465 *tmp++ = WLAN_AUTH_CHALLENGE_LEN;
1467 memcpy(pos, sta->u.sta.challenge, WLAN_AUTH_CHALLENGE_LEN);
1468 olen += 2 + WLAN_AUTH_CHALLENGE_LEN;
1471 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH,
1472 body, olen, hdr->addr2, ap->tx_callback_auth);
1475 sta->last_rx = jiffies;
1476 atomic_dec(&sta->users);
1480 PDEBUG(DEBUG_AP, "%s: %pM auth (alg=%d "
1481 "trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n",
1482 dev->name, hdr->addr2,
1483 auth_alg, auth_transaction, status_code, len,
1484 le16_to_cpu(hdr->frame_control), resp, txt);
1489 /* Called only as a scheduled task for pending AP frames. */
1490 static void handle_assoc(local_info_t *local, struct sk_buff *skb,
1491 struct hostap_80211_rx_status *rx_stats, int reassoc)
1493 struct net_device *dev = local->dev;
1494 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1495 char body[12], *p, *lpos;
1498 u16 resp = WLAN_STATUS_SUCCESS;
1499 struct sta_info *sta = NULL;
1500 int send_deauth = 0;
1502 u8 prev_ap[ETH_ALEN];
1504 left = len = skb->len - IEEE80211_MGMT_HDR_LEN;
1506 if (len < (reassoc ? 10 : 4)) {
1507 PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload "
1508 "(len=%d, reassoc=%d) from %pM\n",
1509 dev->name, len, reassoc, hdr->addr2);
1513 spin_lock_bh(&local->ap->sta_table_lock);
1514 sta = ap_get_sta(local->ap, hdr->addr2);
1515 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
1516 spin_unlock_bh(&local->ap->sta_table_lock);
1517 txt = "trying to associate before authentication";
1519 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1520 sta = NULL; /* do not decrement sta->users */
1523 atomic_inc(&sta->users);
1524 spin_unlock_bh(&local->ap->sta_table_lock);
1526 pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
1527 sta->capability = __le16_to_cpu(*pos);
1529 sta->listen_interval = __le16_to_cpu(*pos);
1533 memcpy(prev_ap, pos, ETH_ALEN);
1534 pos++; pos++; pos++; left -= 6;
1536 memset(prev_ap, 0, ETH_ALEN);
1540 unsigned char *u = (unsigned char *) pos;
1542 if (*u == WLAN_EID_SSID) {
1547 if (ileft > left || ileft > MAX_SSID_LEN) {
1548 txt = "SSID overflow";
1549 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1553 if (ileft != strlen(local->essid) ||
1554 memcmp(local->essid, u, ileft) != 0) {
1555 txt = "not our SSID";
1556 resp = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1564 if (left >= 2 && *u == WLAN_EID_SUPP_RATES) {
1569 if (ileft > left || ileft == 0 ||
1570 ileft > WLAN_SUPP_RATES_MAX) {
1571 txt = "SUPP_RATES len error";
1572 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1576 memset(sta->supported_rates, 0,
1577 sizeof(sta->supported_rates));
1578 memcpy(sta->supported_rates, u, ileft);
1579 prism2_check_tx_rates(sta);
1586 PDEBUG(DEBUG_AP, "%s: assoc from %pM"
1587 " with extra data (%d bytes) [",
1588 dev->name, hdr->addr2, left);
1590 PDEBUG2(DEBUG_AP, "<%02x>", *u);
1593 PDEBUG2(DEBUG_AP, "]\n");
1596 txt = "frame underflow";
1597 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1601 /* get a unique AID */
1603 txt = "OK, old AID";
1605 spin_lock_bh(&local->ap->sta_table_lock);
1606 for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
1607 if (local->ap->sta_aid[sta->aid - 1] == NULL)
1609 if (sta->aid > MAX_AID_TABLE_SIZE) {
1611 spin_unlock_bh(&local->ap->sta_table_lock);
1612 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1613 txt = "no room for more AIDs";
1615 local->ap->sta_aid[sta->aid - 1] = sta;
1616 spin_unlock_bh(&local->ap->sta_table_lock);
1617 txt = "OK, new AID";
1622 pos = (__le16 *) body;
1625 *pos = cpu_to_le16(WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH);
1628 /* FIX: CF-Pollable and CF-PollReq should be set to match the
1629 * values in beacons/probe responses */
1630 /* FIX: how about privacy and WEP? */
1632 *pos = cpu_to_le16(WLAN_CAPABILITY_ESS);
1636 *pos = cpu_to_le16(resp);
1639 *pos = cpu_to_le16((sta && sta->aid > 0 ? sta->aid : 0) |
1640 BIT(14) | BIT(15)); /* AID */
1643 /* Supported rates (Information element) */
1645 *p++ = WLAN_EID_SUPP_RATES;
1648 if (local->tx_rate_control & WLAN_RATE_1M) {
1649 *p++ = local->basic_rates & WLAN_RATE_1M ? 0x82 : 0x02;
1652 if (local->tx_rate_control & WLAN_RATE_2M) {
1653 *p++ = local->basic_rates & WLAN_RATE_2M ? 0x84 : 0x04;
1656 if (local->tx_rate_control & WLAN_RATE_5M5) {
1657 *p++ = local->basic_rates & WLAN_RATE_5M5 ?
1661 if (local->tx_rate_control & WLAN_RATE_11M) {
1662 *p++ = local->basic_rates & WLAN_RATE_11M ?
1669 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT |
1670 (send_deauth ? IEEE80211_STYPE_DEAUTH :
1671 (reassoc ? IEEE80211_STYPE_REASSOC_RESP :
1672 IEEE80211_STYPE_ASSOC_RESP)),
1673 body, (u8 *) pos - (u8 *) body,
1675 send_deauth ? 0 : local->ap->tx_callback_assoc);
1678 if (resp == WLAN_STATUS_SUCCESS) {
1679 sta->last_rx = jiffies;
1680 /* STA will be marked associated from TX callback, if
1681 * AssocResp is ACKed */
1683 atomic_dec(&sta->users);
1687 PDEBUG(DEBUG_AP, "%s: %pM %sassoc (len=%d "
1688 "prev_ap=%pM) => %d(%d) (%s)\n",
1691 reassoc ? "re" : "", len,
1693 resp, send_deauth, txt);
1698 /* Called only as a scheduled task for pending AP frames. */
1699 static void handle_deauth(local_info_t *local, struct sk_buff *skb,
1700 struct hostap_80211_rx_status *rx_stats)
1702 struct net_device *dev = local->dev;
1703 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1704 char *body = (char *) (skb->data + IEEE80211_MGMT_HDR_LEN);
1708 struct sta_info *sta = NULL;
1710 len = skb->len - IEEE80211_MGMT_HDR_LEN;
1713 printk("handle_deauth - too short payload (len=%d)\n", len);
1717 pos = (__le16 *) body;
1718 reason_code = le16_to_cpu(*pos);
1720 PDEBUG(DEBUG_AP, "%s: deauthentication: %pM len=%d, "
1721 "reason_code=%d\n", dev->name, hdr->addr2,
1724 spin_lock_bh(&local->ap->sta_table_lock);
1725 sta = ap_get_sta(local->ap, hdr->addr2);
1727 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap)
1728 hostap_event_expired_sta(local->dev, sta);
1729 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1731 spin_unlock_bh(&local->ap->sta_table_lock);
1733 printk("%s: deauthentication from %pM, "
1734 "reason_code=%d, but STA not authenticated\n", dev->name,
1735 hdr->addr2, reason_code);
1740 /* Called only as a scheduled task for pending AP frames. */
1741 static void handle_disassoc(local_info_t *local, struct sk_buff *skb,
1742 struct hostap_80211_rx_status *rx_stats)
1744 struct net_device *dev = local->dev;
1745 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1746 char *body = skb->data + IEEE80211_MGMT_HDR_LEN;
1750 struct sta_info *sta = NULL;
1752 len = skb->len - IEEE80211_MGMT_HDR_LEN;
1755 printk("handle_disassoc - too short payload (len=%d)\n", len);
1759 pos = (__le16 *) body;
1760 reason_code = le16_to_cpu(*pos);
1762 PDEBUG(DEBUG_AP, "%s: disassociation: %pM len=%d, "
1763 "reason_code=%d\n", dev->name, hdr->addr2,
1766 spin_lock_bh(&local->ap->sta_table_lock);
1767 sta = ap_get_sta(local->ap, hdr->addr2);
1769 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap)
1770 hostap_event_expired_sta(local->dev, sta);
1771 sta->flags &= ~WLAN_STA_ASSOC;
1773 spin_unlock_bh(&local->ap->sta_table_lock);
1775 printk("%s: disassociation from %pM, "
1776 "reason_code=%d, but STA not authenticated\n",
1777 dev->name, hdr->addr2, reason_code);
1782 /* Called only as a scheduled task for pending AP frames. */
1783 static void ap_handle_data_nullfunc(local_info_t *local,
1784 struct ieee80211_hdr *hdr)
1786 struct net_device *dev = local->dev;
1788 /* some STA f/w's seem to require control::ACK frame for
1789 * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does
1791 * send control::ACK for the data::nullfunc */
1793 printk(KERN_DEBUG "Sending control::ACK for data::nullfunc\n");
1794 prism2_send_mgmt(dev, IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK,
1795 NULL, 0, hdr->addr2, 0);
1799 /* Called only as a scheduled task for pending AP frames. */
1800 static void ap_handle_dropped_data(local_info_t *local,
1801 struct ieee80211_hdr *hdr)
1803 struct net_device *dev = local->dev;
1804 struct sta_info *sta;
1807 spin_lock_bh(&local->ap->sta_table_lock);
1808 sta = ap_get_sta(local->ap, hdr->addr2);
1810 atomic_inc(&sta->users);
1811 spin_unlock_bh(&local->ap->sta_table_lock);
1813 if (sta != NULL && (sta->flags & WLAN_STA_ASSOC)) {
1814 PDEBUG(DEBUG_AP, "ap_handle_dropped_data: STA is now okay?\n");
1815 atomic_dec(&sta->users);
1819 reason = cpu_to_le16(WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1820 prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT |
1821 ((sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) ?
1822 IEEE80211_STYPE_DEAUTH : IEEE80211_STYPE_DISASSOC),
1823 (char *) &reason, sizeof(reason), hdr->addr2, 0);
1826 atomic_dec(&sta->users);
1829 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
1832 /* Called only as a scheduled task for pending AP frames. */
1833 static void pspoll_send_buffered(local_info_t *local, struct sta_info *sta,
1834 struct sk_buff *skb)
1836 struct hostap_skb_tx_data *meta;
1838 if (!(sta->flags & WLAN_STA_PS)) {
1839 /* Station has moved to non-PS mode, so send all buffered
1840 * frames using normal device queue. */
1841 dev_queue_xmit(skb);
1845 /* add a flag for hostap_handle_sta_tx() to know that this skb should
1846 * be passed through even though STA is using PS */
1847 meta = (struct hostap_skb_tx_data *) skb->cb;
1848 meta->flags |= HOSTAP_TX_FLAGS_BUFFERED_FRAME;
1849 if (!skb_queue_empty(&sta->tx_buf)) {
1850 /* indicate to STA that more frames follow */
1851 meta->flags |= HOSTAP_TX_FLAGS_ADD_MOREDATA;
1853 dev_queue_xmit(skb);
1857 /* Called only as a scheduled task for pending AP frames. */
1858 static void handle_pspoll(local_info_t *local,
1859 struct ieee80211_hdr *hdr,
1860 struct hostap_80211_rx_status *rx_stats)
1862 struct net_device *dev = local->dev;
1863 struct sta_info *sta;
1865 struct sk_buff *skb;
1867 PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=%pM, TA=%pM PWRMGT=%d\n",
1868 hdr->addr1, hdr->addr2, !!ieee80211_has_pm(hdr->frame_control));
1870 if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
1872 "handle_pspoll - addr1(BSSID)=%pM not own MAC\n",
1877 aid = le16_to_cpu(hdr->duration_id);
1878 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) {
1879 PDEBUG(DEBUG_PS, " PSPOLL and AID[15:14] not set\n");
1882 aid &= ~(BIT(15) | BIT(14));
1883 if (aid == 0 || aid > MAX_AID_TABLE_SIZE) {
1884 PDEBUG(DEBUG_PS, " invalid aid=%d\n", aid);
1887 PDEBUG(DEBUG_PS2, " aid=%d\n", aid);
1889 spin_lock_bh(&local->ap->sta_table_lock);
1890 sta = ap_get_sta(local->ap, hdr->addr2);
1892 atomic_inc(&sta->users);
1893 spin_unlock_bh(&local->ap->sta_table_lock);
1896 PDEBUG(DEBUG_PS, " STA not found\n");
1899 if (sta->aid != aid) {
1900 PDEBUG(DEBUG_PS, " received aid=%i does not match with "
1901 "assoc.aid=%d\n", aid, sta->aid);
1906 * - add timeout for buffering (clear aid in TIM vector if buffer timed
1907 * out (expiry time must be longer than ListenInterval for
1908 * the corresponding STA; "8802-11: 11.2.1.9 AP aging function"
1909 * - what to do, if buffered, pspolled, and sent frame is not ACKed by
1910 * sta; store buffer for later use and leave TIM aid bit set? use
1911 * TX event to check whether frame was ACKed?
1914 while ((skb = skb_dequeue(&sta->tx_buf)) != NULL) {
1915 /* send buffered frame .. */
1916 PDEBUG(DEBUG_PS2, "Sending buffered frame to STA after PS POLL"
1917 " (buffer_count=%d)\n", skb_queue_len(&sta->tx_buf));
1919 pspoll_send_buffered(local, sta, skb);
1921 if (sta->flags & WLAN_STA_PS) {
1922 /* send only one buffered packet per PS Poll */
1923 /* FIX: should ignore further PS Polls until the
1924 * buffered packet that was just sent is acknowledged
1925 * (Tx or TxExc event) */
1930 if (skb_queue_empty(&sta->tx_buf)) {
1931 /* try to clear aid from TIM */
1932 if (!(sta->flags & WLAN_STA_TIM))
1933 PDEBUG(DEBUG_PS2, "Re-unsetting TIM for aid %d\n",
1935 hostap_set_tim(local, aid, 0);
1936 sta->flags &= ~WLAN_STA_TIM;
1939 atomic_dec(&sta->users);
1943 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
1945 static void handle_wds_oper_queue(struct work_struct *work)
1947 struct ap_data *ap = container_of(work, struct ap_data,
1949 local_info_t *local = ap->local;
1950 struct wds_oper_data *entry, *prev;
1952 spin_lock_bh(&local->lock);
1953 entry = local->ap->wds_oper_entries;
1954 local->ap->wds_oper_entries = NULL;
1955 spin_unlock_bh(&local->lock);
1958 PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection "
1961 entry->type == WDS_ADD ? "adding" : "removing",
1963 if (entry->type == WDS_ADD)
1964 prism2_wds_add(local, entry->addr, 0);
1965 else if (entry->type == WDS_DEL)
1966 prism2_wds_del(local, entry->addr, 0, 1);
1969 entry = entry->next;
1975 /* Called only as a scheduled task for pending AP frames. */
1976 static void handle_beacon(local_info_t *local, struct sk_buff *skb,
1977 struct hostap_80211_rx_status *rx_stats)
1979 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1980 char *body = skb->data + IEEE80211_MGMT_HDR_LEN;
1982 u16 beacon_int, capability;
1985 unsigned char *supp_rates = NULL;
1986 int ssid_len = 0, supp_rates_len = 0;
1987 struct sta_info *sta = NULL;
1988 int new_sta = 0, channel = -1;
1990 len = skb->len - IEEE80211_MGMT_HDR_LEN;
1992 if (len < 8 + 2 + 2) {
1993 printk(KERN_DEBUG "handle_beacon - too short payload "
1998 pos = (__le16 *) body;
2001 /* Timestamp (8 octets) */
2002 pos += 4; left -= 8;
2003 /* Beacon interval (2 octets) */
2004 beacon_int = le16_to_cpu(*pos);
2006 /* Capability information (2 octets) */
2007 capability = le16_to_cpu(*pos);
2010 if (local->ap->ap_policy != AP_OTHER_AP_EVEN_IBSS &&
2011 capability & WLAN_CAPABILITY_IBSS)
2016 unsigned char *u = (unsigned char *) pos;
2018 if (*u == WLAN_EID_SSID) {
2023 if (ileft > left || ileft > MAX_SSID_LEN) {
2024 PDEBUG(DEBUG_AP, "SSID: overflow\n");
2028 if (local->ap->ap_policy == AP_OTHER_AP_SAME_SSID &&
2029 (ileft != strlen(local->essid) ||
2030 memcmp(local->essid, u, ileft) != 0)) {
2042 if (*u == WLAN_EID_SUPP_RATES) {
2047 if (ileft > left || ileft == 0 || ileft > 8) {
2048 PDEBUG(DEBUG_AP, " - SUPP_RATES len error\n");
2053 supp_rates_len = ileft;
2059 if (*u == WLAN_EID_DS_PARAMS) {
2064 if (ileft > left || ileft != 1) {
2065 PDEBUG(DEBUG_AP, " - DS_PARAMS len error\n");
2076 spin_lock_bh(&local->ap->sta_table_lock);
2077 sta = ap_get_sta(local->ap, hdr->addr2);
2079 atomic_inc(&sta->users);
2080 spin_unlock_bh(&local->ap->sta_table_lock);
2085 sta = ap_add_sta(local->ap, hdr->addr2);
2087 printk(KERN_INFO "prism2: kmalloc failed for AP "
2088 "data structure\n");
2091 hostap_event_new_sta(local->dev, sta);
2093 /* mark APs authentication and associated for pseudo ad-hoc
2094 * style communication */
2095 sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
2097 if (local->ap->autom_ap_wds) {
2098 hostap_wds_link_oper(local, sta->addr, WDS_ADD);
2104 sta->u.ap.ssid_len = ssid_len;
2105 memcpy(sta->u.ap.ssid, ssid, ssid_len);
2106 sta->u.ap.ssid[ssid_len] = '\0';
2108 sta->u.ap.ssid_len = 0;
2109 sta->u.ap.ssid[0] = '\0';
2111 sta->u.ap.channel = channel;
2113 sta->rx_bytes += len;
2114 sta->u.ap.last_beacon = sta->last_rx = jiffies;
2115 sta->capability = capability;
2116 sta->listen_interval = beacon_int;
2118 atomic_dec(&sta->users);
2121 memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
2122 memcpy(sta->supported_rates, supp_rates, supp_rates_len);
2123 prism2_check_tx_rates(sta);
2127 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2130 /* Called only as a tasklet. */
2131 static void handle_ap_item(local_info_t *local, struct sk_buff *skb,
2132 struct hostap_80211_rx_status *rx_stats)
2134 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2135 struct net_device *dev = local->dev;
2136 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2137 u16 fc, type, stype;
2138 struct ieee80211_hdr *hdr;
2140 /* FIX: should give skb->len to handler functions and check that the
2141 * buffer is long enough */
2142 hdr = (struct ieee80211_hdr *) skb->data;
2143 fc = le16_to_cpu(hdr->frame_control);
2144 type = fc & IEEE80211_FCTL_FTYPE;
2145 stype = fc & IEEE80211_FCTL_STYPE;
2147 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2148 if (!local->hostapd && type == IEEE80211_FTYPE_DATA) {
2149 PDEBUG(DEBUG_AP, "handle_ap_item - data frame\n");
2151 if (!(fc & IEEE80211_FCTL_TODS) ||
2152 (fc & IEEE80211_FCTL_FROMDS)) {
2153 if (stype == IEEE80211_STYPE_NULLFUNC) {
2154 /* no ToDS nullfunc seems to be used to check
2155 * AP association; so send reject message to
2156 * speed up re-association */
2157 ap_handle_dropped_data(local, hdr);
2160 PDEBUG(DEBUG_AP, " not ToDS frame (fc=0x%04x)\n",
2165 if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
2166 PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=%pM"
2167 " not own MAC\n", hdr->addr1);
2171 if (local->ap->nullfunc_ack &&
2172 stype == IEEE80211_STYPE_NULLFUNC)
2173 ap_handle_data_nullfunc(local, hdr);
2175 ap_handle_dropped_data(local, hdr);
2179 if (type == IEEE80211_FTYPE_MGMT && stype == IEEE80211_STYPE_BEACON) {
2180 handle_beacon(local, skb, rx_stats);
2183 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2185 if (type == IEEE80211_FTYPE_CTL && stype == IEEE80211_STYPE_PSPOLL) {
2186 handle_pspoll(local, hdr, rx_stats);
2190 if (local->hostapd) {
2191 PDEBUG(DEBUG_AP, "Unknown frame in AP queue: type=0x%02x "
2192 "subtype=0x%02x\n", type, stype);
2196 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2197 if (type != IEEE80211_FTYPE_MGMT) {
2198 PDEBUG(DEBUG_AP, "handle_ap_item - not a management frame?\n");
2202 if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
2203 PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%pM"
2204 " not own MAC\n", hdr->addr1);
2208 if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN)) {
2209 PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=%pM"
2210 " not own MAC\n", hdr->addr3);
2215 case IEEE80211_STYPE_ASSOC_REQ:
2216 handle_assoc(local, skb, rx_stats, 0);
2218 case IEEE80211_STYPE_ASSOC_RESP:
2219 PDEBUG(DEBUG_AP, "==> ASSOC RESP (ignored)\n");
2221 case IEEE80211_STYPE_REASSOC_REQ:
2222 handle_assoc(local, skb, rx_stats, 1);
2224 case IEEE80211_STYPE_REASSOC_RESP:
2225 PDEBUG(DEBUG_AP, "==> REASSOC RESP (ignored)\n");
2227 case IEEE80211_STYPE_ATIM:
2228 PDEBUG(DEBUG_AP, "==> ATIM (ignored)\n");
2230 case IEEE80211_STYPE_DISASSOC:
2231 handle_disassoc(local, skb, rx_stats);
2233 case IEEE80211_STYPE_AUTH:
2234 handle_authen(local, skb, rx_stats);
2236 case IEEE80211_STYPE_DEAUTH:
2237 handle_deauth(local, skb, rx_stats);
2240 PDEBUG(DEBUG_AP, "Unknown mgmt frame subtype 0x%02x\n",
2244 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2251 /* Called only as a tasklet (software IRQ) */
2252 void hostap_rx(struct net_device *dev, struct sk_buff *skb,
2253 struct hostap_80211_rx_status *rx_stats)
2255 struct hostap_interface *iface;
2256 local_info_t *local;
2257 struct ieee80211_hdr *hdr;
2259 iface = netdev_priv(dev);
2260 local = iface->local;
2265 dev->stats.rx_packets++;
2267 hdr = (struct ieee80211_hdr *) skb->data;
2269 if (local->ap->ap_policy == AP_OTHER_AP_SKIP_ALL &&
2270 ieee80211_is_beacon(hdr->frame_control))
2273 skb->protocol = cpu_to_be16(ETH_P_HOSTAP);
2274 handle_ap_item(local, skb, rx_stats);
2282 /* Called only as a tasklet (software IRQ) */
2283 static void schedule_packet_send(local_info_t *local, struct sta_info *sta)
2285 struct sk_buff *skb;
2286 struct ieee80211_hdr *hdr;
2287 struct hostap_80211_rx_status rx_stats;
2289 if (skb_queue_empty(&sta->tx_buf))
2292 skb = dev_alloc_skb(16);
2294 printk(KERN_DEBUG "%s: schedule_packet_send: skb alloc "
2295 "failed\n", local->dev->name);
2299 hdr = (struct ieee80211_hdr *) skb_put(skb, 16);
2301 /* Generate a fake pspoll frame to start packet delivery */
2302 hdr->frame_control = cpu_to_le16(
2303 IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
2304 memcpy(hdr->addr1, local->dev->dev_addr, ETH_ALEN);
2305 memcpy(hdr->addr2, sta->addr, ETH_ALEN);
2306 hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14));
2309 "%s: Scheduling buffered packet delivery for STA %pM\n",
2310 local->dev->name, sta->addr);
2312 skb->dev = local->dev;
2314 memset(&rx_stats, 0, sizeof(rx_stats));
2315 hostap_rx(local->dev, skb, &rx_stats);
2319 int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[],
2320 struct iw_quality qual[], int buf_size,
2323 struct ap_data *ap = local->ap;
2324 struct list_head *ptr;
2327 spin_lock_bh(&ap->sta_table_lock);
2329 for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list;
2331 struct sta_info *sta = (struct sta_info *) ptr;
2333 if (aplist && !sta->ap)
2335 addr[count].sa_family = ARPHRD_ETHER;
2336 memcpy(addr[count].sa_data, sta->addr, ETH_ALEN);
2337 if (sta->last_rx_silence == 0)
2338 qual[count].qual = sta->last_rx_signal < 27 ?
2339 0 : (sta->last_rx_signal - 27) * 92 / 127;
2341 qual[count].qual = sta->last_rx_signal -
2342 sta->last_rx_silence - 35;
2343 qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal);
2344 qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
2345 qual[count].updated = sta->last_rx_updated;
2347 sta->last_rx_updated = IW_QUAL_DBM;
2350 if (count >= buf_size)
2353 spin_unlock_bh(&ap->sta_table_lock);
2359 /* Translate our list of Access Points & Stations to a card independant
2360 * format that the Wireless Tools will understand - Jean II */
2361 int prism2_ap_translate_scan(struct net_device *dev,
2362 struct iw_request_info *info, char *buffer)
2364 struct hostap_interface *iface;
2365 local_info_t *local;
2367 struct list_head *ptr;
2368 struct iw_event iwe;
2369 char *current_ev = buffer;
2370 char *end_buf = buffer + IW_SCAN_MAX_DATA;
2371 #if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT)
2375 iface = netdev_priv(dev);
2376 local = iface->local;
2379 spin_lock_bh(&ap->sta_table_lock);
2381 for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list;
2383 struct sta_info *sta = (struct sta_info *) ptr;
2385 /* First entry *MUST* be the AP MAC address */
2386 memset(&iwe, 0, sizeof(iwe));
2387 iwe.cmd = SIOCGIWAP;
2388 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2389 memcpy(iwe.u.ap_addr.sa_data, sta->addr, ETH_ALEN);
2390 iwe.len = IW_EV_ADDR_LEN;
2391 current_ev = iwe_stream_add_event(info, current_ev, end_buf,
2392 &iwe, IW_EV_ADDR_LEN);
2394 /* Use the mode to indicate if it's a station or
2395 * an Access Point */
2396 memset(&iwe, 0, sizeof(iwe));
2397 iwe.cmd = SIOCGIWMODE;
2399 iwe.u.mode = IW_MODE_MASTER;
2401 iwe.u.mode = IW_MODE_INFRA;
2402 iwe.len = IW_EV_UINT_LEN;
2403 current_ev = iwe_stream_add_event(info, current_ev, end_buf,
2404 &iwe, IW_EV_UINT_LEN);
2407 memset(&iwe, 0, sizeof(iwe));
2409 if (sta->last_rx_silence == 0)
2410 iwe.u.qual.qual = sta->last_rx_signal < 27 ?
2411 0 : (sta->last_rx_signal - 27) * 92 / 127;
2413 iwe.u.qual.qual = sta->last_rx_signal -
2414 sta->last_rx_silence - 35;
2415 iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal);
2416 iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
2417 iwe.u.qual.updated = sta->last_rx_updated;
2418 iwe.len = IW_EV_QUAL_LEN;
2419 current_ev = iwe_stream_add_event(info, current_ev, end_buf,
2420 &iwe, IW_EV_QUAL_LEN);
2422 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2424 memset(&iwe, 0, sizeof(iwe));
2425 iwe.cmd = SIOCGIWESSID;
2426 iwe.u.data.length = sta->u.ap.ssid_len;
2427 iwe.u.data.flags = 1;
2428 current_ev = iwe_stream_add_point(info, current_ev,
2432 memset(&iwe, 0, sizeof(iwe));
2433 iwe.cmd = SIOCGIWENCODE;
2434 if (sta->capability & WLAN_CAPABILITY_PRIVACY)
2436 IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2438 iwe.u.data.flags = IW_ENCODE_DISABLED;
2439 current_ev = iwe_stream_add_point(info, current_ev,
2443 if (sta->u.ap.channel > 0 &&
2444 sta->u.ap.channel <= FREQ_COUNT) {
2445 memset(&iwe, 0, sizeof(iwe));
2446 iwe.cmd = SIOCGIWFREQ;
2447 iwe.u.freq.m = freq_list[sta->u.ap.channel - 1]
2450 current_ev = iwe_stream_add_event(
2451 info, current_ev, end_buf, &iwe,
2455 memset(&iwe, 0, sizeof(iwe));
2456 iwe.cmd = IWEVCUSTOM;
2457 sprintf(buf, "beacon_interval=%d",
2458 sta->listen_interval);
2459 iwe.u.data.length = strlen(buf);
2460 current_ev = iwe_stream_add_point(info, current_ev,
2461 end_buf, &iwe, buf);
2463 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2465 sta->last_rx_updated = IW_QUAL_DBM;
2467 /* To be continued, we should make good use of IWEVCUSTOM */
2470 spin_unlock_bh(&ap->sta_table_lock);
2472 return current_ev - buffer;
2476 static int prism2_hostapd_add_sta(struct ap_data *ap,
2477 struct prism2_hostapd_param *param)
2479 struct sta_info *sta;
2481 spin_lock_bh(&ap->sta_table_lock);
2482 sta = ap_get_sta(ap, param->sta_addr);
2484 atomic_inc(&sta->users);
2485 spin_unlock_bh(&ap->sta_table_lock);
2488 sta = ap_add_sta(ap, param->sta_addr);
2493 if (!(sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
2494 hostap_event_new_sta(sta->local->dev, sta);
2496 sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
2497 sta->last_rx = jiffies;
2498 sta->aid = param->u.add_sta.aid;
2499 sta->capability = param->u.add_sta.capability;
2500 sta->tx_supp_rates = param->u.add_sta.tx_supp_rates;
2501 if (sta->tx_supp_rates & WLAN_RATE_1M)
2502 sta->supported_rates[0] = 2;
2503 if (sta->tx_supp_rates & WLAN_RATE_2M)
2504 sta->supported_rates[1] = 4;
2505 if (sta->tx_supp_rates & WLAN_RATE_5M5)
2506 sta->supported_rates[2] = 11;
2507 if (sta->tx_supp_rates & WLAN_RATE_11M)
2508 sta->supported_rates[3] = 22;
2509 prism2_check_tx_rates(sta);
2510 atomic_dec(&sta->users);
2515 static int prism2_hostapd_remove_sta(struct ap_data *ap,
2516 struct prism2_hostapd_param *param)
2518 struct sta_info *sta;
2520 spin_lock_bh(&ap->sta_table_lock);
2521 sta = ap_get_sta(ap, param->sta_addr);
2523 ap_sta_hash_del(ap, sta);
2524 list_del(&sta->list);
2526 spin_unlock_bh(&ap->sta_table_lock);
2531 if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
2532 hostap_event_expired_sta(sta->local->dev, sta);
2533 ap_free_sta(ap, sta);
2539 static int prism2_hostapd_get_info_sta(struct ap_data *ap,
2540 struct prism2_hostapd_param *param)
2542 struct sta_info *sta;
2544 spin_lock_bh(&ap->sta_table_lock);
2545 sta = ap_get_sta(ap, param->sta_addr);
2547 atomic_inc(&sta->users);
2548 spin_unlock_bh(&ap->sta_table_lock);
2553 param->u.get_info_sta.inactive_sec = (jiffies - sta->last_rx) / HZ;
2555 atomic_dec(&sta->users);
2561 static int prism2_hostapd_set_flags_sta(struct ap_data *ap,
2562 struct prism2_hostapd_param *param)
2564 struct sta_info *sta;
2566 spin_lock_bh(&ap->sta_table_lock);
2567 sta = ap_get_sta(ap, param->sta_addr);
2569 sta->flags |= param->u.set_flags_sta.flags_or;
2570 sta->flags &= param->u.set_flags_sta.flags_and;
2572 spin_unlock_bh(&ap->sta_table_lock);
2581 static int prism2_hostapd_sta_clear_stats(struct ap_data *ap,
2582 struct prism2_hostapd_param *param)
2584 struct sta_info *sta;
2587 spin_lock_bh(&ap->sta_table_lock);
2588 sta = ap_get_sta(ap, param->sta_addr);
2590 sta->rx_packets = sta->tx_packets = 0;
2591 sta->rx_bytes = sta->tx_bytes = 0;
2592 for (rate = 0; rate < WLAN_RATE_COUNT; rate++) {
2593 sta->tx_count[rate] = 0;
2594 sta->rx_count[rate] = 0;
2597 spin_unlock_bh(&ap->sta_table_lock);
2606 int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param)
2608 switch (param->cmd) {
2609 case PRISM2_HOSTAPD_FLUSH:
2610 ap_control_kickall(ap);
2612 case PRISM2_HOSTAPD_ADD_STA:
2613 return prism2_hostapd_add_sta(ap, param);
2614 case PRISM2_HOSTAPD_REMOVE_STA:
2615 return prism2_hostapd_remove_sta(ap, param);
2616 case PRISM2_HOSTAPD_GET_INFO_STA:
2617 return prism2_hostapd_get_info_sta(ap, param);
2618 case PRISM2_HOSTAPD_SET_FLAGS_STA:
2619 return prism2_hostapd_set_flags_sta(ap, param);
2620 case PRISM2_HOSTAPD_STA_CLEAR_STATS:
2621 return prism2_hostapd_sta_clear_stats(ap, param);
2623 printk(KERN_WARNING "prism2_hostapd: unknown cmd=%d\n",
2630 /* Update station info for host-based TX rate control and return current
2632 static int ap_update_sta_tx_rate(struct sta_info *sta, struct net_device *dev)
2634 int ret = sta->tx_rate;
2635 struct hostap_interface *iface;
2636 local_info_t *local;
2638 iface = netdev_priv(dev);
2639 local = iface->local;
2641 sta->tx_count[sta->tx_rate_idx]++;
2642 sta->tx_since_last_failure++;
2643 sta->tx_consecutive_exc = 0;
2644 if (sta->tx_since_last_failure >= WLAN_RATE_UPDATE_COUNT &&
2645 sta->tx_rate_idx < sta->tx_max_rate) {
2646 /* use next higher rate */
2647 int old_rate, new_rate;
2648 old_rate = new_rate = sta->tx_rate_idx;
2649 while (new_rate < sta->tx_max_rate) {
2651 if (ap_tx_rate_ok(new_rate, sta, local)) {
2652 sta->tx_rate_idx = new_rate;
2656 if (old_rate != sta->tx_rate_idx) {
2657 switch (sta->tx_rate_idx) {
2658 case 0: sta->tx_rate = 10; break;
2659 case 1: sta->tx_rate = 20; break;
2660 case 2: sta->tx_rate = 55; break;
2661 case 3: sta->tx_rate = 110; break;
2662 default: sta->tx_rate = 0; break;
2664 PDEBUG(DEBUG_AP, "%s: STA %pM TX rate raised to %d\n",
2665 dev->name, sta->addr, sta->tx_rate);
2667 sta->tx_since_last_failure = 0;
2674 /* Called only from software IRQ. Called for each TX frame prior possible
2675 * encryption and transmit. */
2676 ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx)
2678 struct sta_info *sta = NULL;
2679 struct sk_buff *skb = tx->skb;
2681 struct ieee80211_hdr *hdr;
2682 struct hostap_skb_tx_data *meta;
2684 meta = (struct hostap_skb_tx_data *) skb->cb;
2685 ret = AP_TX_CONTINUE;
2686 if (local->ap == NULL || skb->len < 10 ||
2687 meta->iface->type == HOSTAP_INTERFACE_STA)
2690 hdr = (struct ieee80211_hdr *) skb->data;
2692 if (hdr->addr1[0] & 0x01) {
2693 /* broadcast/multicast frame - no AP related processing */
2694 if (local->ap->num_sta <= 0)
2699 /* unicast packet - check whether destination STA is associated */
2700 spin_lock(&local->ap->sta_table_lock);
2701 sta = ap_get_sta(local->ap, hdr->addr1);
2703 atomic_inc(&sta->users);
2704 spin_unlock(&local->ap->sta_table_lock);
2706 if (local->iw_mode == IW_MODE_MASTER && sta == NULL &&
2707 !(meta->flags & HOSTAP_TX_FLAGS_WDS) &&
2708 meta->iface->type != HOSTAP_INTERFACE_MASTER &&
2709 meta->iface->type != HOSTAP_INTERFACE_AP) {
2711 /* This can happen, e.g., when wlan0 is added to a bridge and
2712 * bridging code does not know which port is the correct target
2713 * for a unicast frame. In this case, the packet is send to all
2714 * ports of the bridge. Since this is a valid scenario, do not
2715 * print out any errors here. */
2716 if (net_ratelimit()) {
2717 printk(KERN_DEBUG "AP: drop packet to non-associated "
2718 "STA %pM\n", hdr->addr1);
2721 local->ap->tx_drop_nonassoc++;
2729 if (!(sta->flags & WLAN_STA_AUTHORIZED))
2730 ret = AP_TX_CONTINUE_NOT_AUTHORIZED;
2732 /* Set tx_rate if using host-based TX rate control */
2733 if (!local->fw_tx_rate_control)
2734 local->ap->last_tx_rate = meta->rate =
2735 ap_update_sta_tx_rate(sta, local->dev);
2737 if (local->iw_mode != IW_MODE_MASTER)
2740 if (!(sta->flags & WLAN_STA_PS))
2743 if (meta->flags & HOSTAP_TX_FLAGS_ADD_MOREDATA) {
2744 /* indicate to STA that more frames follow */
2745 hdr->frame_control |=
2746 cpu_to_le16(IEEE80211_FCTL_MOREDATA);
2749 if (meta->flags & HOSTAP_TX_FLAGS_BUFFERED_FRAME) {
2750 /* packet was already buffered and now send due to
2751 * PS poll, so do not rebuffer it */
2755 if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) {
2756 PDEBUG(DEBUG_PS, "%s: No more space in STA (%pM)'s"
2758 local->dev->name, sta->addr);
2759 /* Make sure that TIM is set for the station (it might not be
2760 * after AP wlan hw reset). */
2761 /* FIX: should fix hw reset to restore bits based on STA
2763 hostap_set_tim(local, sta->aid, 1);
2764 sta->flags |= WLAN_STA_TIM;
2769 /* STA in PS mode, buffer frame for later delivery */
2770 set_tim = skb_queue_empty(&sta->tx_buf);
2771 skb_queue_tail(&sta->tx_buf, skb);
2772 /* FIX: could save RX time to skb and expire buffered frames after
2773 * some time if STA does not poll for them */
2776 if (sta->flags & WLAN_STA_TIM)
2777 PDEBUG(DEBUG_PS2, "Re-setting TIM for aid %d\n",
2779 hostap_set_tim(local, sta->aid, 1);
2780 sta->flags |= WLAN_STA_TIM;
2783 ret = AP_TX_BUFFERED;
2787 if (ret == AP_TX_CONTINUE ||
2788 ret == AP_TX_CONTINUE_NOT_AUTHORIZED) {
2790 sta->tx_bytes += skb->len;
2791 sta->last_tx = jiffies;
2794 if ((ret == AP_TX_CONTINUE ||
2795 ret == AP_TX_CONTINUE_NOT_AUTHORIZED) &&
2796 sta->crypt && tx->host_encrypt) {
2797 tx->crypt = sta->crypt;
2798 tx->sta_ptr = sta; /* hostap_handle_sta_release() will
2799 * be called to release sta info
2802 atomic_dec(&sta->users);
2809 void hostap_handle_sta_release(void *ptr)
2811 struct sta_info *sta = ptr;
2812 atomic_dec(&sta->users);
2816 /* Called only as a tasklet (software IRQ) */
2817 void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb)
2819 struct sta_info *sta;
2820 struct ieee80211_hdr *hdr;
2821 struct hostap_skb_tx_data *meta;
2823 hdr = (struct ieee80211_hdr *) skb->data;
2824 meta = (struct hostap_skb_tx_data *) skb->cb;
2826 spin_lock(&local->ap->sta_table_lock);
2827 sta = ap_get_sta(local->ap, hdr->addr1);
2829 spin_unlock(&local->ap->sta_table_lock);
2830 PDEBUG(DEBUG_AP, "%s: Could not find STA %pM"
2831 " for this TX error (@%lu)\n",
2832 local->dev->name, hdr->addr1, jiffies);
2836 sta->tx_since_last_failure = 0;
2837 sta->tx_consecutive_exc++;
2839 if (sta->tx_consecutive_exc >= WLAN_RATE_DECREASE_THRESHOLD &&
2840 sta->tx_rate_idx > 0 && meta->rate <= sta->tx_rate) {
2841 /* use next lower rate */
2843 old = rate = sta->tx_rate_idx;
2846 if (ap_tx_rate_ok(rate, sta, local)) {
2847 sta->tx_rate_idx = rate;
2851 if (old != sta->tx_rate_idx) {
2852 switch (sta->tx_rate_idx) {
2853 case 0: sta->tx_rate = 10; break;
2854 case 1: sta->tx_rate = 20; break;
2855 case 2: sta->tx_rate = 55; break;
2856 case 3: sta->tx_rate = 110; break;
2857 default: sta->tx_rate = 0; break;
2860 "%s: STA %pM TX rate lowered to %d\n",
2861 local->dev->name, sta->addr, sta->tx_rate);
2863 sta->tx_consecutive_exc = 0;
2865 spin_unlock(&local->ap->sta_table_lock);
2869 static void hostap_update_sta_ps2(local_info_t *local, struct sta_info *sta,
2870 int pwrmgt, int type, int stype)
2872 if (pwrmgt && !(sta->flags & WLAN_STA_PS)) {
2873 sta->flags |= WLAN_STA_PS;
2874 PDEBUG(DEBUG_PS2, "STA %pM changed to use PS "
2875 "mode (type=0x%02X, stype=0x%02X)\n",
2876 sta->addr, type >> 2, stype >> 4);
2877 } else if (!pwrmgt && (sta->flags & WLAN_STA_PS)) {
2878 sta->flags &= ~WLAN_STA_PS;
2879 PDEBUG(DEBUG_PS2, "STA %pM changed to not use "
2880 "PS mode (type=0x%02X, stype=0x%02X)\n",
2881 sta->addr, type >> 2, stype >> 4);
2882 if (type != IEEE80211_FTYPE_CTL ||
2883 stype != IEEE80211_STYPE_PSPOLL)
2884 schedule_packet_send(local, sta);
2889 /* Called only as a tasklet (software IRQ). Called for each RX frame to update
2890 * STA power saving state. pwrmgt is a flag from 802.11 frame_control field. */
2891 int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr)
2893 struct sta_info *sta;
2896 spin_lock(&local->ap->sta_table_lock);
2897 sta = ap_get_sta(local->ap, hdr->addr2);
2899 atomic_inc(&sta->users);
2900 spin_unlock(&local->ap->sta_table_lock);
2905 fc = le16_to_cpu(hdr->frame_control);
2906 hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM,
2907 fc & IEEE80211_FCTL_FTYPE,
2908 fc & IEEE80211_FCTL_STYPE);
2910 atomic_dec(&sta->users);
2915 /* Called only as a tasklet (software IRQ). Called for each RX frame after
2916 * getting RX header and payload from hardware. */
2917 ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
2918 struct sk_buff *skb,
2919 struct hostap_80211_rx_status *rx_stats,
2923 struct sta_info *sta;
2924 u16 fc, type, stype;
2925 struct ieee80211_hdr *hdr;
2927 if (local->ap == NULL)
2928 return AP_RX_CONTINUE;
2930 hdr = (struct ieee80211_hdr *) skb->data;
2932 fc = le16_to_cpu(hdr->frame_control);
2933 type = fc & IEEE80211_FCTL_FTYPE;
2934 stype = fc & IEEE80211_FCTL_STYPE;
2936 spin_lock(&local->ap->sta_table_lock);
2937 sta = ap_get_sta(local->ap, hdr->addr2);
2939 atomic_inc(&sta->users);
2940 spin_unlock(&local->ap->sta_table_lock);
2942 if (sta && !(sta->flags & WLAN_STA_AUTHORIZED))
2943 ret = AP_RX_CONTINUE_NOT_AUTHORIZED;
2945 ret = AP_RX_CONTINUE;
2948 if (fc & IEEE80211_FCTL_TODS) {
2949 if (!wds && (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
2950 if (local->hostapd) {
2951 prism2_rx_80211(local->apdev, skb, rx_stats,
2952 PRISM2_RX_NON_ASSOC);
2953 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2955 printk(KERN_DEBUG "%s: dropped received packet"
2956 " from non-associated STA %pM"
2957 " (type=0x%02x, subtype=0x%02x)\n",
2958 dev->name, hdr->addr2,
2959 type >> 2, stype >> 4);
2960 hostap_rx(dev, skb, rx_stats);
2961 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2966 } else if (fc & IEEE80211_FCTL_FROMDS) {
2968 /* FromDS frame - not for us; probably
2969 * broadcast/multicast in another BSS - drop */
2970 if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
2971 printk(KERN_DEBUG "Odd.. FromDS packet "
2972 "received with own BSSID\n");
2973 hostap_dump_rx_80211(dev->name, skb, rx_stats);
2978 } else if (stype == IEEE80211_STYPE_NULLFUNC && sta == NULL &&
2979 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
2981 if (local->hostapd) {
2982 prism2_rx_80211(local->apdev, skb, rx_stats,
2983 PRISM2_RX_NON_ASSOC);
2984 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
2986 /* At least Lucent f/w seems to send data::nullfunc
2987 * frames with no ToDS flag when the current AP returns
2988 * after being unavailable for some time. Speed up
2989 * re-association by informing the station about it not
2990 * being associated. */
2991 printk(KERN_DEBUG "%s: rejected received nullfunc frame"
2992 " without ToDS from not associated STA %pM\n",
2993 dev->name, hdr->addr2);
2994 hostap_rx(dev, skb, rx_stats);
2995 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
2999 } else if (stype == IEEE80211_STYPE_NULLFUNC) {
3000 /* At least Lucent cards seem to send periodic nullfunc
3001 * frames with ToDS. Let these through to update SQ
3002 * stats and PS state. Nullfunc frames do not contain
3003 * any data and they will be dropped below. */
3005 /* If BSSID (Addr3) is foreign, this frame is a normal
3006 * broadcast frame from an IBSS network. Drop it silently.
3007 * If BSSID is own, report the dropping of this frame. */
3008 if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
3009 printk(KERN_DEBUG "%s: dropped received packet from %pM"
3010 " with no ToDS flag "
3011 "(type=0x%02x, subtype=0x%02x)\n", dev->name,
3012 hdr->addr2, type >> 2, stype >> 4);
3013 hostap_dump_rx_80211(dev->name, skb, rx_stats);
3020 hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM,
3024 sta->rx_bytes += skb->len;
3025 sta->last_rx = jiffies;
3028 if (local->ap->nullfunc_ack && stype == IEEE80211_STYPE_NULLFUNC &&
3029 fc & IEEE80211_FCTL_TODS) {
3030 if (local->hostapd) {
3031 prism2_rx_80211(local->apdev, skb, rx_stats,
3032 PRISM2_RX_NULLFUNC_ACK);
3033 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3035 /* some STA f/w's seem to require control::ACK frame
3036 * for data::nullfunc, but Prism2 f/w 0.8.0 (at least
3037 * from Compaq) does not send this.. Try to generate
3038 * ACK for these frames from the host driver to make
3039 * power saving work with, e.g., Lucent WaveLAN f/w */
3040 hostap_rx(dev, skb, rx_stats);
3041 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
3049 atomic_dec(&sta->users);
3055 /* Called only as a tasklet (software IRQ) */
3056 int hostap_handle_sta_crypto(local_info_t *local,
3057 struct ieee80211_hdr *hdr,
3058 struct lib80211_crypt_data **crypt,
3061 struct sta_info *sta;
3063 spin_lock(&local->ap->sta_table_lock);
3064 sta = ap_get_sta(local->ap, hdr->addr2);
3066 atomic_inc(&sta->users);
3067 spin_unlock(&local->ap->sta_table_lock);
3073 *crypt = sta->crypt;
3075 /* hostap_handle_sta_release() will be called to release STA
3078 atomic_dec(&sta->users);
3084 /* Called only as a tasklet (software IRQ) */
3085 int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr)
3087 struct sta_info *sta;
3090 spin_lock(&ap->sta_table_lock);
3091 sta = ap_get_sta(ap, sta_addr);
3092 if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap)
3094 spin_unlock(&ap->sta_table_lock);
3100 /* Called only as a tasklet (software IRQ) */
3101 int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr)
3103 struct sta_info *sta;
3106 spin_lock(&ap->sta_table_lock);
3107 sta = ap_get_sta(ap, sta_addr);
3108 if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap &&
3109 ((sta->flags & WLAN_STA_AUTHORIZED) ||
3110 ap->local->ieee_802_1x == 0))
3112 spin_unlock(&ap->sta_table_lock);
3118 /* Called only as a tasklet (software IRQ) */
3119 int hostap_add_sta(struct ap_data *ap, u8 *sta_addr)
3121 struct sta_info *sta;
3127 spin_lock(&ap->sta_table_lock);
3128 sta = ap_get_sta(ap, sta_addr);
3131 spin_unlock(&ap->sta_table_lock);
3134 sta = ap_add_sta(ap, sta_addr);
3137 sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
3139 memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
3140 /* No way of knowing which rates are supported since we did not
3141 * get supported rates element from beacon/assoc req. Assume
3142 * that remote end supports all 802.11b rates. */
3143 sta->supported_rates[0] = 0x82;
3144 sta->supported_rates[1] = 0x84;
3145 sta->supported_rates[2] = 0x0b;
3146 sta->supported_rates[3] = 0x16;
3147 sta->tx_supp_rates = WLAN_RATE_1M | WLAN_RATE_2M |
3148 WLAN_RATE_5M5 | WLAN_RATE_11M;
3150 sta->tx_max_rate = sta->tx_rate_idx = 3;
3157 /* Called only as a tasklet (software IRQ) */
3158 int hostap_update_rx_stats(struct ap_data *ap,
3159 struct ieee80211_hdr *hdr,
3160 struct hostap_80211_rx_status *rx_stats)
3162 struct sta_info *sta;
3167 spin_lock(&ap->sta_table_lock);
3168 sta = ap_get_sta(ap, hdr->addr2);
3170 sta->last_rx_silence = rx_stats->noise;
3171 sta->last_rx_signal = rx_stats->signal;
3172 sta->last_rx_rate = rx_stats->rate;
3173 sta->last_rx_updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
3174 if (rx_stats->rate == 10)
3176 else if (rx_stats->rate == 20)
3178 else if (rx_stats->rate == 55)
3180 else if (rx_stats->rate == 110)
3183 spin_unlock(&ap->sta_table_lock);
3185 return sta ? 0 : -1;
3189 void hostap_update_rates(local_info_t *local)
3191 struct sta_info *sta;
3192 struct ap_data *ap = local->ap;
3197 spin_lock_bh(&ap->sta_table_lock);
3198 list_for_each_entry(sta, &ap->sta_list, list) {
3199 prism2_check_tx_rates(sta);
3201 spin_unlock_bh(&ap->sta_table_lock);
3205 void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent,
3206 struct lib80211_crypt_data ***crypt)
3208 struct sta_info *sta;
3210 spin_lock_bh(&ap->sta_table_lock);
3211 sta = ap_get_sta(ap, addr);
3213 atomic_inc(&sta->users);
3214 spin_unlock_bh(&ap->sta_table_lock);
3216 if (!sta && permanent)
3217 sta = ap_add_sta(ap, addr);
3223 sta->flags |= WLAN_STA_PERM;
3225 *crypt = &sta->crypt;
3231 void hostap_add_wds_links(local_info_t *local)
3233 struct ap_data *ap = local->ap;
3234 struct sta_info *sta;
3236 spin_lock_bh(&ap->sta_table_lock);
3237 list_for_each_entry(sta, &ap->sta_list, list) {
3239 hostap_wds_link_oper(local, sta->addr, WDS_ADD);
3241 spin_unlock_bh(&ap->sta_table_lock);
3243 schedule_work(&local->ap->wds_oper_queue);
3247 void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type)
3249 struct wds_oper_data *entry;
3251 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
3254 memcpy(entry->addr, addr, ETH_ALEN);
3256 spin_lock_bh(&local->lock);
3257 entry->next = local->ap->wds_oper_entries;
3258 local->ap->wds_oper_entries = entry;
3259 spin_unlock_bh(&local->lock);
3261 schedule_work(&local->ap->wds_oper_queue);
3265 EXPORT_SYMBOL(hostap_init_data);
3266 EXPORT_SYMBOL(hostap_init_ap_proc);
3267 EXPORT_SYMBOL(hostap_free_data);
3268 EXPORT_SYMBOL(hostap_check_sta_fw_version);
3269 EXPORT_SYMBOL(hostap_handle_sta_tx_exc);
3270 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
3271 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */