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authorKalle Valo <kvalo@codeaurora.org>2015-11-18 09:42:58 +0200
committerKalle Valo <kvalo@codeaurora.org>2015-11-18 14:28:30 +0200
commiteb4f98d5deb9b3a36e8b3ab7a9dec1b5ebc76e75 (patch)
treeb76fb98a7e16814626782e643b84e6fbf174d408 /drivers/net/wireless/hostap/hostap_ap.c
parent6948300c79dba2b6c7b54af43d1924f51e47e017 (diff)
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hostap: move under intersil vendor directory
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/hostap/hostap_ap.c')
-rw-r--r--drivers/net/wireless/hostap/hostap_ap.c3339
1 files changed, 0 insertions, 3339 deletions
diff --git a/drivers/net/wireless/hostap/hostap_ap.c b/drivers/net/wireless/hostap/hostap_ap.c
deleted file mode 100644
index c995ace153ee..000000000000
--- a/drivers/net/wireless/hostap/hostap_ap.c
+++ /dev/null
@@ -1,3339 +0,0 @@
-/*
- * Intersil Prism2 driver with Host AP (software access point) support
- * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
- * <j@w1.fi>
- * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
- *
- * This file is to be included into hostap.c when S/W AP functionality is
- * compiled.
- *
- * AP: FIX:
- * - if unicast Class 2 (assoc,reassoc,disassoc) frame received from
- * unauthenticated STA, send deauth. frame (8802.11: 5.5)
- * - if unicast Class 3 (data with to/from DS,deauth,pspoll) frame received
- * from authenticated, but unassoc STA, send disassoc frame (8802.11: 5.5)
- * - if unicast Class 3 received from unauthenticated STA, send deauth. frame
- * (8802.11: 5.5)
- */
-
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/delay.h>
-#include <linux/random.h>
-#include <linux/if_arp.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <linux/moduleparam.h>
-#include <linux/etherdevice.h>
-
-#include "hostap_wlan.h"
-#include "hostap.h"
-#include "hostap_ap.h"
-
-static int other_ap_policy[MAX_PARM_DEVICES] = { AP_OTHER_AP_SKIP_ALL,
- DEF_INTS };
-module_param_array(other_ap_policy, int, NULL, 0444);
-MODULE_PARM_DESC(other_ap_policy, "Other AP beacon monitoring policy (0-3)");
-
-static int ap_max_inactivity[MAX_PARM_DEVICES] = { AP_MAX_INACTIVITY_SEC,
- DEF_INTS };
-module_param_array(ap_max_inactivity, int, NULL, 0444);
-MODULE_PARM_DESC(ap_max_inactivity, "AP timeout (in seconds) for station "
- "inactivity");
-
-static int ap_bridge_packets[MAX_PARM_DEVICES] = { 1, DEF_INTS };
-module_param_array(ap_bridge_packets, int, NULL, 0444);
-MODULE_PARM_DESC(ap_bridge_packets, "Bridge packets directly between "
- "stations");
-
-static int autom_ap_wds[MAX_PARM_DEVICES] = { 0, DEF_INTS };
-module_param_array(autom_ap_wds, int, NULL, 0444);
-MODULE_PARM_DESC(autom_ap_wds, "Add WDS connections to other APs "
- "automatically");
-
-
-static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta);
-static void hostap_event_expired_sta(struct net_device *dev,
- struct sta_info *sta);
-static void handle_add_proc_queue(struct work_struct *work);
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
-static void handle_wds_oper_queue(struct work_struct *work);
-static void prism2_send_mgmt(struct net_device *dev,
- u16 type_subtype, char *body,
- int body_len, u8 *addr, u16 tx_cb_idx);
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
-
-#ifndef PRISM2_NO_PROCFS_DEBUG
-static int ap_debug_proc_show(struct seq_file *m, void *v)
-{
- struct ap_data *ap = m->private;
-
- seq_printf(m, "BridgedUnicastFrames=%u\n", ap->bridged_unicast);
- seq_printf(m, "BridgedMulticastFrames=%u\n", ap->bridged_multicast);
- seq_printf(m, "max_inactivity=%u\n", ap->max_inactivity / HZ);
- seq_printf(m, "bridge_packets=%u\n", ap->bridge_packets);
- seq_printf(m, "nullfunc_ack=%u\n", ap->nullfunc_ack);
- seq_printf(m, "autom_ap_wds=%u\n", ap->autom_ap_wds);
- seq_printf(m, "auth_algs=%u\n", ap->local->auth_algs);
- seq_printf(m, "tx_drop_nonassoc=%u\n", ap->tx_drop_nonassoc);
- return 0;
-}
-
-static int ap_debug_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ap_debug_proc_show, PDE_DATA(inode));
-}
-
-static const struct file_operations ap_debug_proc_fops = {
- .open = ap_debug_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-#endif /* PRISM2_NO_PROCFS_DEBUG */
-
-
-static void ap_sta_hash_add(struct ap_data *ap, struct sta_info *sta)
-{
- sta->hnext = ap->sta_hash[STA_HASH(sta->addr)];
- ap->sta_hash[STA_HASH(sta->addr)] = sta;
-}
-
-static void ap_sta_hash_del(struct ap_data *ap, struct sta_info *sta)
-{
- struct sta_info *s;
-
- s = ap->sta_hash[STA_HASH(sta->addr)];
- if (s == NULL) return;
- if (ether_addr_equal(s->addr, sta->addr)) {
- ap->sta_hash[STA_HASH(sta->addr)] = s->hnext;
- return;
- }
-
- while (s->hnext != NULL && !ether_addr_equal(s->hnext->addr, sta->addr))
- s = s->hnext;
- if (s->hnext != NULL)
- s->hnext = s->hnext->hnext;
- else
- printk("AP: could not remove STA %pM from hash table\n",
- sta->addr);
-}
-
-static void ap_free_sta(struct ap_data *ap, struct sta_info *sta)
-{
- if (sta->ap && sta->local)
- hostap_event_expired_sta(sta->local->dev, sta);
-
- if (ap->proc != NULL) {
- char name[20];
- sprintf(name, "%pM", sta->addr);
- remove_proc_entry(name, ap->proc);
- }
-
- if (sta->crypt) {
- sta->crypt->ops->deinit(sta->crypt->priv);
- kfree(sta->crypt);
- sta->crypt = NULL;
- }
-
- skb_queue_purge(&sta->tx_buf);
-
- ap->num_sta--;
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- if (sta->aid > 0)
- ap->sta_aid[sta->aid - 1] = NULL;
-
- if (!sta->ap)
- kfree(sta->u.sta.challenge);
- del_timer_sync(&sta->timer);
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
- kfree(sta);
-}
-
-
-static void hostap_set_tim(local_info_t *local, int aid, int set)
-{
- if (local->func->set_tim)
- local->func->set_tim(local->dev, aid, set);
-}
-
-
-static void hostap_event_new_sta(struct net_device *dev, struct sta_info *sta)
-{
- union iwreq_data wrqu;
- memset(&wrqu, 0, sizeof(wrqu));
- memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN);
- wrqu.addr.sa_family = ARPHRD_ETHER;
- wireless_send_event(dev, IWEVREGISTERED, &wrqu, NULL);
-}
-
-
-static void hostap_event_expired_sta(struct net_device *dev,
- struct sta_info *sta)
-{
- union iwreq_data wrqu;
- memset(&wrqu, 0, sizeof(wrqu));
- memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN);
- wrqu.addr.sa_family = ARPHRD_ETHER;
- wireless_send_event(dev, IWEVEXPIRED, &wrqu, NULL);
-}
-
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
-
-static void ap_handle_timer(unsigned long data)
-{
- struct sta_info *sta = (struct sta_info *) data;
- local_info_t *local;
- struct ap_data *ap;
- unsigned long next_time = 0;
- int was_assoc;
-
- if (sta == NULL || sta->local == NULL || sta->local->ap == NULL) {
- PDEBUG(DEBUG_AP, "ap_handle_timer() called with NULL data\n");
- return;
- }
-
- local = sta->local;
- ap = local->ap;
- was_assoc = sta->flags & WLAN_STA_ASSOC;
-
- if (atomic_read(&sta->users) != 0)
- next_time = jiffies + HZ;
- else if ((sta->flags & WLAN_STA_PERM) && !(sta->flags & WLAN_STA_AUTH))
- next_time = jiffies + ap->max_inactivity;
-
- if (time_before(jiffies, sta->last_rx + ap->max_inactivity)) {
- /* station activity detected; reset timeout state */
- sta->timeout_next = STA_NULLFUNC;
- next_time = sta->last_rx + ap->max_inactivity;
- } else if (sta->timeout_next == STA_DISASSOC &&
- !(sta->flags & WLAN_STA_PENDING_POLL)) {
- /* STA ACKed data nullfunc frame poll */
- sta->timeout_next = STA_NULLFUNC;
- next_time = jiffies + ap->max_inactivity;
- }
-
- if (next_time) {
- sta->timer.expires = next_time;
- add_timer(&sta->timer);
- return;
- }
-
- if (sta->ap)
- sta->timeout_next = STA_DEAUTH;
-
- if (sta->timeout_next == STA_DEAUTH && !(sta->flags & WLAN_STA_PERM)) {
- spin_lock(&ap->sta_table_lock);
- ap_sta_hash_del(ap, sta);
- list_del(&sta->list);
- spin_unlock(&ap->sta_table_lock);
- sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
- } else if (sta->timeout_next == STA_DISASSOC)
- sta->flags &= ~WLAN_STA_ASSOC;
-
- if (was_assoc && !(sta->flags & WLAN_STA_ASSOC) && !sta->ap)
- hostap_event_expired_sta(local->dev, sta);
-
- if (sta->timeout_next == STA_DEAUTH && sta->aid > 0 &&
- !skb_queue_empty(&sta->tx_buf)) {
- hostap_set_tim(local, sta->aid, 0);
- sta->flags &= ~WLAN_STA_TIM;
- }
-
- if (sta->ap) {
- if (ap->autom_ap_wds) {
- PDEBUG(DEBUG_AP, "%s: removing automatic WDS "
- "connection to AP %pM\n",
- local->dev->name, sta->addr);
- hostap_wds_link_oper(local, sta->addr, WDS_DEL);
- }
- } else if (sta->timeout_next == STA_NULLFUNC) {
- /* send data frame to poll STA and check whether this frame
- * is ACKed */
- /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but
- * it is apparently not retried so TX Exc events are not
- * received for it */
- sta->flags |= WLAN_STA_PENDING_POLL;
- prism2_send_mgmt(local->dev, IEEE80211_FTYPE_DATA |
- IEEE80211_STYPE_DATA, NULL, 0,
- sta->addr, ap->tx_callback_poll);
- } else {
- int deauth = sta->timeout_next == STA_DEAUTH;
- __le16 resp;
- PDEBUG(DEBUG_AP, "%s: sending %s info to STA %pM"
- "(last=%lu, jiffies=%lu)\n",
- local->dev->name,
- deauth ? "deauthentication" : "disassociation",
- sta->addr, sta->last_rx, jiffies);
-
- resp = cpu_to_le16(deauth ? WLAN_REASON_PREV_AUTH_NOT_VALID :
- WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
- prism2_send_mgmt(local->dev, IEEE80211_FTYPE_MGMT |
- (deauth ? IEEE80211_STYPE_DEAUTH :
- IEEE80211_STYPE_DISASSOC),
- (char *) &resp, 2, sta->addr, 0);
- }
-
- if (sta->timeout_next == STA_DEAUTH) {
- if (sta->flags & WLAN_STA_PERM) {
- PDEBUG(DEBUG_AP, "%s: STA %pM"
- " would have been removed, "
- "but it has 'perm' flag\n",
- local->dev->name, sta->addr);
- } else
- ap_free_sta(ap, sta);
- return;
- }
-
- if (sta->timeout_next == STA_NULLFUNC) {
- sta->timeout_next = STA_DISASSOC;
- sta->timer.expires = jiffies + AP_DISASSOC_DELAY;
- } else {
- sta->timeout_next = STA_DEAUTH;
- sta->timer.expires = jiffies + AP_DEAUTH_DELAY;
- }
-
- add_timer(&sta->timer);
-}
-
-
-void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap,
- int resend)
-{
- u8 addr[ETH_ALEN];
- __le16 resp;
- int i;
-
- PDEBUG(DEBUG_AP, "%s: Deauthenticate all stations\n", dev->name);
- eth_broadcast_addr(addr);
-
- resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
-
- /* deauth message sent; try to resend it few times; the message is
- * broadcast, so it may be delayed until next DTIM; there is not much
- * else we can do at this point since the driver is going to be shut
- * down */
- for (i = 0; i < 5; i++) {
- prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_DEAUTH,
- (char *) &resp, 2, addr, 0);
-
- if (!resend || ap->num_sta <= 0)
- return;
-
- mdelay(50);
- }
-}
-
-
-static int ap_control_proc_show(struct seq_file *m, void *v)
-{
- struct ap_data *ap = m->private;
- char *policy_txt;
- struct mac_entry *entry;
-
- if (v == SEQ_START_TOKEN) {
- switch (ap->mac_restrictions.policy) {
- case MAC_POLICY_OPEN:
- policy_txt = "open";
- break;
- case MAC_POLICY_ALLOW:
- policy_txt = "allow";
- break;
- case MAC_POLICY_DENY:
- policy_txt = "deny";
- break;
- default:
- policy_txt = "unknown";
- break;
- }
- seq_printf(m, "MAC policy: %s\n", policy_txt);
- seq_printf(m, "MAC entries: %u\n", ap->mac_restrictions.entries);
- seq_puts(m, "MAC list:\n");
- return 0;
- }
-
- entry = v;
- seq_printf(m, "%pM\n", entry->addr);
- return 0;
-}
-
-static void *ap_control_proc_start(struct seq_file *m, loff_t *_pos)
-{
- struct ap_data *ap = m->private;
- spin_lock_bh(&ap->mac_restrictions.lock);
- return seq_list_start_head(&ap->mac_restrictions.mac_list, *_pos);
-}
-
-static void *ap_control_proc_next(struct seq_file *m, void *v, loff_t *_pos)
-{
- struct ap_data *ap = m->private;
- return seq_list_next(v, &ap->mac_restrictions.mac_list, _pos);
-}
-
-static void ap_control_proc_stop(struct seq_file *m, void *v)
-{
- struct ap_data *ap = m->private;
- spin_unlock_bh(&ap->mac_restrictions.lock);
-}
-
-static const struct seq_operations ap_control_proc_seqops = {
- .start = ap_control_proc_start,
- .next = ap_control_proc_next,
- .stop = ap_control_proc_stop,
- .show = ap_control_proc_show,
-};
-
-static int ap_control_proc_open(struct inode *inode, struct file *file)
-{
- int ret = seq_open(file, &ap_control_proc_seqops);
- if (ret == 0) {
- struct seq_file *m = file->private_data;
- m->private = PDE_DATA(inode);
- }
- return ret;
-}
-
-static const struct file_operations ap_control_proc_fops = {
- .open = ap_control_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-
-int ap_control_add_mac(struct mac_restrictions *mac_restrictions, u8 *mac)
-{
- struct mac_entry *entry;
-
- entry = kmalloc(sizeof(struct mac_entry), GFP_KERNEL);
- if (entry == NULL)
- return -ENOMEM;
-
- memcpy(entry->addr, mac, ETH_ALEN);
-
- spin_lock_bh(&mac_restrictions->lock);
- list_add_tail(&entry->list, &mac_restrictions->mac_list);
- mac_restrictions->entries++;
- spin_unlock_bh(&mac_restrictions->lock);
-
- return 0;
-}
-
-
-int ap_control_del_mac(struct mac_restrictions *mac_restrictions, u8 *mac)
-{
- struct list_head *ptr;
- struct mac_entry *entry;
-
- spin_lock_bh(&mac_restrictions->lock);
- for (ptr = mac_restrictions->mac_list.next;
- ptr != &mac_restrictions->mac_list; ptr = ptr->next) {
- entry = list_entry(ptr, struct mac_entry, list);
-
- if (ether_addr_equal(entry->addr, mac)) {
- list_del(ptr);
- kfree(entry);
- mac_restrictions->entries--;
- spin_unlock_bh(&mac_restrictions->lock);
- return 0;
- }
- }
- spin_unlock_bh(&mac_restrictions->lock);
- return -1;
-}
-
-
-static int ap_control_mac_deny(struct mac_restrictions *mac_restrictions,
- u8 *mac)
-{
- struct mac_entry *entry;
- int found = 0;
-
- if (mac_restrictions->policy == MAC_POLICY_OPEN)
- return 0;
-
- spin_lock_bh(&mac_restrictions->lock);
- list_for_each_entry(entry, &mac_restrictions->mac_list, list) {
- if (ether_addr_equal(entry->addr, mac)) {
- found = 1;
- break;
- }
- }
- spin_unlock_bh(&mac_restrictions->lock);
-
- if (mac_restrictions->policy == MAC_POLICY_ALLOW)
- return !found;
- else
- return found;
-}
-
-
-void ap_control_flush_macs(struct mac_restrictions *mac_restrictions)
-{
- struct list_head *ptr, *n;
- struct mac_entry *entry;
-
- if (mac_restrictions->entries == 0)
- return;
-
- spin_lock_bh(&mac_restrictions->lock);
- for (ptr = mac_restrictions->mac_list.next, n = ptr->next;
- ptr != &mac_restrictions->mac_list;
- ptr = n, n = ptr->next) {
- entry = list_entry(ptr, struct mac_entry, list);
- list_del(ptr);
- kfree(entry);
- }
- mac_restrictions->entries = 0;
- spin_unlock_bh(&mac_restrictions->lock);
-}
-
-
-int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev, u8 *mac)
-{
- struct sta_info *sta;
- __le16 resp;
-
- spin_lock_bh(&ap->sta_table_lock);
- sta = ap_get_sta(ap, mac);
- if (sta) {
- ap_sta_hash_del(ap, sta);
- list_del(&sta->list);
- }
- spin_unlock_bh(&ap->sta_table_lock);
-
- if (!sta)
- return -EINVAL;
-
- resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
- prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH,
- (char *) &resp, 2, sta->addr, 0);
-
- if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap)
- hostap_event_expired_sta(dev, sta);
-
- ap_free_sta(ap, sta);
-
- return 0;
-}
-
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
-
-void ap_control_kickall(struct ap_data *ap)
-{
- struct list_head *ptr, *n;
- struct sta_info *sta;
-
- spin_lock_bh(&ap->sta_table_lock);
- for (ptr = ap->sta_list.next, n = ptr->next; ptr != &ap->sta_list;
- ptr = n, n = ptr->next) {
- sta = list_entry(ptr, struct sta_info, list);
- ap_sta_hash_del(ap, sta);
- list_del(&sta->list);
- if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
- hostap_event_expired_sta(sta->local->dev, sta);
- ap_free_sta(ap, sta);
- }
- spin_unlock_bh(&ap->sta_table_lock);
-}
-
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
-
-static int prism2_ap_proc_show(struct seq_file *m, void *v)
-{
- struct sta_info *sta = v;
- int i;
-
- if (v == SEQ_START_TOKEN) {
- seq_printf(m, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n");
- return 0;
- }
-
- if (!sta->ap)
- return 0;
-
- seq_printf(m, "%pM %d %d %d %d '",
- sta->addr,
- sta->u.ap.channel, sta->last_rx_signal,
- sta->last_rx_silence, sta->last_rx_rate);
-
- for (i = 0; i < sta->u.ap.ssid_len; i++) {
- if (sta->u.ap.ssid[i] >= 32 && sta->u.ap.ssid[i] < 127)
- seq_putc(m, sta->u.ap.ssid[i]);
- else
- seq_printf(m, "<%02x>", sta->u.ap.ssid[i]);
- }
-
- seq_putc(m, '\'');
- if (sta->capability & WLAN_CAPABILITY_ESS)
- seq_puts(m, " [ESS]");
- if (sta->capability & WLAN_CAPABILITY_IBSS)
- seq_puts(m, " [IBSS]");
- if (sta->capability & WLAN_CAPABILITY_PRIVACY)
- seq_puts(m, " [WEP]");
- seq_putc(m, '\n');
- return 0;
-}
-
-static void *prism2_ap_proc_start(struct seq_file *m, loff_t *_pos)
-{
- struct ap_data *ap = m->private;
- spin_lock_bh(&ap->sta_table_lock);
- return seq_list_start_head(&ap->sta_list, *_pos);
-}
-
-static void *prism2_ap_proc_next(struct seq_file *m, void *v, loff_t *_pos)
-{
- struct ap_data *ap = m->private;
- return seq_list_next(v, &ap->sta_list, _pos);
-}
-
-static void prism2_ap_proc_stop(struct seq_file *m, void *v)
-{
- struct ap_data *ap = m->private;
- spin_unlock_bh(&ap->sta_table_lock);
-}
-
-static const struct seq_operations prism2_ap_proc_seqops = {
- .start = prism2_ap_proc_start,
- .next = prism2_ap_proc_next,
- .stop = prism2_ap_proc_stop,
- .show = prism2_ap_proc_show,
-};
-
-static int prism2_ap_proc_open(struct inode *inode, struct file *file)
-{
- int ret = seq_open(file, &prism2_ap_proc_seqops);
- if (ret == 0) {
- struct seq_file *m = file->private_data;
- m->private = PDE_DATA(inode);
- }
- return ret;
-}
-
-static const struct file_operations prism2_ap_proc_fops = {
- .open = prism2_ap_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
-
-void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver)
-{
- if (!ap)
- return;
-
- if (sta_fw_ver == PRISM2_FW_VER(0,8,0)) {
- PDEBUG(DEBUG_AP, "Using data::nullfunc ACK workaround - "
- "firmware upgrade recommended\n");
- ap->nullfunc_ack = 1;
- } else
- ap->nullfunc_ack = 0;
-
- if (sta_fw_ver == PRISM2_FW_VER(1,4,2)) {
- printk(KERN_WARNING "%s: Warning: secondary station firmware "
- "version 1.4.2 does not seem to work in Host AP mode\n",
- ap->local->dev->name);
- }
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-static void hostap_ap_tx_cb(struct sk_buff *skb, int ok, void *data)
-{
- struct ap_data *ap = data;
- struct ieee80211_hdr *hdr;
-
- if (!ap->local->hostapd || !ap->local->apdev) {
- dev_kfree_skb(skb);
- return;
- }
-
- /* Pass the TX callback frame to the hostapd; use 802.11 header version
- * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */
-
- hdr = (struct ieee80211_hdr *) skb->data;
- hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_VERS);
- hdr->frame_control |= cpu_to_le16(ok ? BIT(1) : BIT(0));
-
- skb->dev = ap->local->apdev;
- skb_pull(skb, hostap_80211_get_hdrlen(hdr->frame_control));
- skb->pkt_type = PACKET_OTHERHOST;
- skb->protocol = cpu_to_be16(ETH_P_802_2);
- memset(skb->cb, 0, sizeof(skb->cb));
- netif_rx(skb);
-}
-
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
-/* Called only as a tasklet (software IRQ) */
-static void hostap_ap_tx_cb_auth(struct sk_buff *skb, int ok, void *data)
-{
- struct ap_data *ap = data;
- struct net_device *dev = ap->local->dev;
- struct ieee80211_hdr *hdr;
- u16 auth_alg, auth_transaction, status;
- __le16 *pos;
- struct sta_info *sta = NULL;
- char *txt = NULL;
-
- if (ap->local->hostapd) {
- dev_kfree_skb(skb);
- return;
- }
-
- hdr = (struct ieee80211_hdr *) skb->data;
- if (!ieee80211_is_auth(hdr->frame_control) ||
- skb->len < IEEE80211_MGMT_HDR_LEN + 6) {
- printk(KERN_DEBUG "%s: hostap_ap_tx_cb_auth received invalid "
- "frame\n", dev->name);
- dev_kfree_skb(skb);
- return;
- }
-
- pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
- auth_alg = le16_to_cpu(*pos++);
- auth_transaction = le16_to_cpu(*pos++);
- status = le16_to_cpu(*pos++);
-
- if (!ok) {
- txt = "frame was not ACKed";
- goto done;
- }
-
- spin_lock(&ap->sta_table_lock);
- sta = ap_get_sta(ap, hdr->addr1);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock(&ap->sta_table_lock);
-
- if (!sta) {
- txt = "STA not found";
- goto done;
- }
-
- if (status == WLAN_STATUS_SUCCESS &&
- ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
- (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
- txt = "STA authenticated";
- sta->flags |= WLAN_STA_AUTH;
- sta->last_auth = jiffies;
- } else if (status != WLAN_STATUS_SUCCESS)
- txt = "authentication failed";
-
- done:
- if (sta)
- atomic_dec(&sta->users);
- if (txt) {
- PDEBUG(DEBUG_AP, "%s: %pM auth_cb - alg=%d "
- "trans#=%d status=%d - %s\n",
- dev->name, hdr->addr1,
- auth_alg, auth_transaction, status, txt);
- }
- dev_kfree_skb(skb);
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-static void hostap_ap_tx_cb_assoc(struct sk_buff *skb, int ok, void *data)
-{
- struct ap_data *ap = data;
- struct net_device *dev = ap->local->dev;
- struct ieee80211_hdr *hdr;
- u16 status;
- __le16 *pos;
- struct sta_info *sta = NULL;
- char *txt = NULL;
-
- if (ap->local->hostapd) {
- dev_kfree_skb(skb);
- return;
- }
-
- hdr = (struct ieee80211_hdr *) skb->data;
- if ((!ieee80211_is_assoc_resp(hdr->frame_control) &&
- !ieee80211_is_reassoc_resp(hdr->frame_control)) ||
- skb->len < IEEE80211_MGMT_HDR_LEN + 4) {
- printk(KERN_DEBUG "%s: hostap_ap_tx_cb_assoc received invalid "
- "frame\n", dev->name);
- dev_kfree_skb(skb);
- return;
- }
-
- if (!ok) {
- txt = "frame was not ACKed";
- goto done;
- }
-
- spin_lock(&ap->sta_table_lock);
- sta = ap_get_sta(ap, hdr->addr1);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock(&ap->sta_table_lock);
-
- if (!sta) {
- txt = "STA not found";
- goto done;
- }
-
- pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
- pos++;
- status = le16_to_cpu(*pos++);
- if (status == WLAN_STATUS_SUCCESS) {
- if (!(sta->flags & WLAN_STA_ASSOC))
- hostap_event_new_sta(dev, sta);
- txt = "STA associated";
- sta->flags |= WLAN_STA_ASSOC;
- sta->last_assoc = jiffies;
- } else
- txt = "association failed";
-
- done:
- if (sta)
- atomic_dec(&sta->users);
- if (txt) {
- PDEBUG(DEBUG_AP, "%s: %pM assoc_cb - %s\n",
- dev->name, hdr->addr1, txt);
- }
- dev_kfree_skb(skb);
-}
-
-/* Called only as a tasklet (software IRQ); TX callback for poll frames used
- * in verifying whether the STA is still present. */
-static void hostap_ap_tx_cb_poll(struct sk_buff *skb, int ok, void *data)
-{
- struct ap_data *ap = data;
- struct ieee80211_hdr *hdr;
- struct sta_info *sta;
-
- if (skb->len < 24)
- goto fail;
- hdr = (struct ieee80211_hdr *) skb->data;
- if (ok) {
- spin_lock(&ap->sta_table_lock);
- sta = ap_get_sta(ap, hdr->addr1);
- if (sta)
- sta->flags &= ~WLAN_STA_PENDING_POLL;
- spin_unlock(&ap->sta_table_lock);
- } else {
- PDEBUG(DEBUG_AP,
- "%s: STA %pM did not ACK activity poll frame\n",
- ap->local->dev->name, hdr->addr1);
- }
-
- fail:
- dev_kfree_skb(skb);
-}
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
-
-void hostap_init_data(local_info_t *local)
-{
- struct ap_data *ap = local->ap;
-
- if (ap == NULL) {
- printk(KERN_WARNING "hostap_init_data: ap == NULL\n");
- return;
- }
- memset(ap, 0, sizeof(struct ap_data));
- ap->local = local;
-
- ap->ap_policy = GET_INT_PARM(other_ap_policy, local->card_idx);
- ap->bridge_packets = GET_INT_PARM(ap_bridge_packets, local->card_idx);
- ap->max_inactivity =
- GET_INT_PARM(ap_max_inactivity, local->card_idx) * HZ;
- ap->autom_ap_wds = GET_INT_PARM(autom_ap_wds, local->card_idx);
-
- spin_lock_init(&ap->sta_table_lock);
- INIT_LIST_HEAD(&ap->sta_list);
-
- /* Initialize task queue structure for AP management */
- INIT_WORK(&local->ap->add_sta_proc_queue, handle_add_proc_queue);
-
- ap->tx_callback_idx =
- hostap_tx_callback_register(local, hostap_ap_tx_cb, ap);
- if (ap->tx_callback_idx == 0)
- printk(KERN_WARNING "%s: failed to register TX callback for "
- "AP\n", local->dev->name);
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- INIT_WORK(&local->ap->wds_oper_queue, handle_wds_oper_queue);
-
- ap->tx_callback_auth =
- hostap_tx_callback_register(local, hostap_ap_tx_cb_auth, ap);
- ap->tx_callback_assoc =
- hostap_tx_callback_register(local, hostap_ap_tx_cb_assoc, ap);
- ap->tx_callback_poll =
- hostap_tx_callback_register(local, hostap_ap_tx_cb_poll, ap);
- if (ap->tx_callback_auth == 0 || ap->tx_callback_assoc == 0 ||
- ap->tx_callback_poll == 0)
- printk(KERN_WARNING "%s: failed to register TX callback for "
- "AP\n", local->dev->name);
-
- spin_lock_init(&ap->mac_restrictions.lock);
- INIT_LIST_HEAD(&ap->mac_restrictions.mac_list);
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
- ap->initialized = 1;
-}
-
-
-void hostap_init_ap_proc(local_info_t *local)
-{
- struct ap_data *ap = local->ap;
-
- ap->proc = local->proc;
- if (ap->proc == NULL)
- return;
-
-#ifndef PRISM2_NO_PROCFS_DEBUG
- proc_create_data("ap_debug", 0, ap->proc, &ap_debug_proc_fops, ap);
-#endif /* PRISM2_NO_PROCFS_DEBUG */
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- proc_create_data("ap_control", 0, ap->proc, &ap_control_proc_fops, ap);
- proc_create_data("ap", 0, ap->proc, &prism2_ap_proc_fops, ap);
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
-}
-
-
-void hostap_free_data(struct ap_data *ap)
-{
- struct sta_info *n, *sta;
-
- if (ap == NULL || !ap->initialized) {
- printk(KERN_DEBUG "hostap_free_data: ap has not yet been "
- "initialized - skip resource freeing\n");
- return;
- }
-
- flush_work(&ap->add_sta_proc_queue);
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- flush_work(&ap->wds_oper_queue);
- if (ap->crypt)
- ap->crypt->deinit(ap->crypt_priv);
- ap->crypt = ap->crypt_priv = NULL;
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
- list_for_each_entry_safe(sta, n, &ap->sta_list, list) {
- ap_sta_hash_del(ap, sta);
- list_del(&sta->list);
- if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
- hostap_event_expired_sta(sta->local->dev, sta);
- ap_free_sta(ap, sta);
- }
-
-#ifndef PRISM2_NO_PROCFS_DEBUG
- if (ap->proc != NULL) {
- remove_proc_entry("ap_debug", ap->proc);
- }
-#endif /* PRISM2_NO_PROCFS_DEBUG */
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- if (ap->proc != NULL) {
- remove_proc_entry("ap", ap->proc);
- remove_proc_entry("ap_control", ap->proc);
- }
- ap_control_flush_macs(&ap->mac_restrictions);
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
- ap->initialized = 0;
-}
-
-
-/* caller should have mutex for AP STA list handling */
-static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta)
-{
- struct sta_info *s;
-
- s = ap->sta_hash[STA_HASH(sta)];
- while (s != NULL && !ether_addr_equal(s->addr, sta))
- s = s->hnext;
- return s;
-}
-
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
-
-/* Called from timer handler and from scheduled AP queue handlers */
-static void prism2_send_mgmt(struct net_device *dev,
- u16 type_subtype, char *body,
- int body_len, u8 *addr, u16 tx_cb_idx)
-{
- struct hostap_interface *iface;
- local_info_t *local;
- struct ieee80211_hdr *hdr;
- u16 fc;
- struct sk_buff *skb;
- struct hostap_skb_tx_data *meta;
- int hdrlen;
-
- iface = netdev_priv(dev);
- local = iface->local;
- dev = local->dev; /* always use master radio device */
- iface = netdev_priv(dev);
-
- if (!(dev->flags & IFF_UP)) {
- PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt - device is not UP - "
- "cannot send frame\n", dev->name);
- return;
- }
-
- skb = dev_alloc_skb(sizeof(*hdr) + body_len);
- if (skb == NULL) {
- PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt failed to allocate "
- "skb\n", dev->name);
- return;
- }
-
- fc = type_subtype;
- hdrlen = hostap_80211_get_hdrlen(cpu_to_le16(type_subtype));
- hdr = (struct ieee80211_hdr *) skb_put(skb, hdrlen);
- if (body)
- memcpy(skb_put(skb, body_len), body, body_len);
-
- memset(hdr, 0, hdrlen);
-
- /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11
- * tx_control instead of using local->tx_control */
-
-
- memcpy(hdr->addr1, addr, ETH_ALEN); /* DA / RA */
- if (ieee80211_is_data(hdr->frame_control)) {
- fc |= IEEE80211_FCTL_FROMDS;
- memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* BSSID */
- memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* SA */
- } else if (ieee80211_is_ctl(hdr->frame_control)) {
- /* control:ACK does not have addr2 or addr3 */
- eth_zero_addr(hdr->addr2);
- eth_zero_addr(hdr->addr3);
- } else {
- memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* SA */
- memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* BSSID */
- }
-
- hdr->frame_control = cpu_to_le16(fc);
-
- meta = (struct hostap_skb_tx_data *) skb->cb;
- memset(meta, 0, sizeof(*meta));
- meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
- meta->iface = iface;
- meta->tx_cb_idx = tx_cb_idx;
-
- skb->dev = dev;
- skb_reset_mac_header(skb);
- skb_reset_network_header(skb);
- dev_queue_xmit(skb);
-}
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
-
-static int prism2_sta_proc_show(struct seq_file *m, void *v)
-{
- struct sta_info *sta = m->private;
- int i;
-
- /* FIX: possible race condition.. the STA data could have just expired,
- * but proc entry was still here so that the read could have started;
- * some locking should be done here.. */
-
- seq_printf(m,
- "%s=%pM\nusers=%d\naid=%d\n"
- "flags=0x%04x%s%s%s%s%s%s%s\n"
- "capability=0x%02x\nlisten_interval=%d\nsupported_rates=",
- sta->ap ? "AP" : "STA",
- sta->addr, atomic_read(&sta->users), sta->aid,
- sta->flags,
- sta->flags & WLAN_STA_AUTH ? " AUTH" : "",
- sta->flags & WLAN_STA_ASSOC ? " ASSOC" : "",
- sta->flags & WLAN_STA_PS ? " PS" : "",
- sta->flags & WLAN_STA_TIM ? " TIM" : "",
- sta->flags & WLAN_STA_PERM ? " PERM" : "",
- sta->flags & WLAN_STA_AUTHORIZED ? " AUTHORIZED" : "",
- sta->flags & WLAN_STA_PENDING_POLL ? " POLL" : "",
- sta->capability, sta->listen_interval);
- /* supported_rates: 500 kbit/s units with msb ignored */
- for (i = 0; i < sizeof(sta->supported_rates); i++)
- if (sta->supported_rates[i] != 0)
- seq_printf(m, "%d%sMbps ",
- (sta->supported_rates[i] & 0x7f) / 2,
- sta->supported_rates[i] & 1 ? ".5" : "");
- seq_printf(m,
- "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n"
- "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n"
- "tx_packets=%lu\n"
- "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n"
- "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n"
- "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n"
- "tx[11M]=%d\n"
- "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n",
- jiffies, sta->last_auth, sta->last_assoc, sta->last_rx,
- sta->last_tx,
- sta->rx_packets, sta->tx_packets, sta->rx_bytes,
- sta->tx_bytes, skb_queue_len(&sta->tx_buf),
- sta->last_rx_silence,
- sta->last_rx_signal, sta->last_rx_rate / 10,
- sta->last_rx_rate % 10 ? ".5" : "",
- sta->tx_rate, sta->tx_count[0], sta->tx_count[1],
- sta->tx_count[2], sta->tx_count[3], sta->rx_count[0],
- sta->rx_count[1], sta->rx_count[2], sta->rx_count[3]);
- if (sta->crypt && sta->crypt->ops && sta->crypt->ops->print_stats)
- sta->crypt->ops->print_stats(m, sta->crypt->priv);
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- if (sta->ap) {
- if (sta->u.ap.channel >= 0)
- seq_printf(m, "channel=%d\n", sta->u.ap.channel);
- seq_puts(m, "ssid=");
- for (i = 0; i < sta->u.ap.ssid_len; i++) {
- if (sta->u.ap.ssid[i] >= 32 && sta->u.ap.ssid[i] < 127)
- seq_putc(m, sta->u.ap.ssid[i]);
- else
- seq_printf(m, "<%02x>", sta->u.ap.ssid[i]);
- }
- seq_putc(m, '\n');
- }
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
- return 0;
-}
-
-static int prism2_sta_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, prism2_sta_proc_show, PDE_DATA(inode));
-}
-
-static const struct file_operations prism2_sta_proc_fops = {
- .open = prism2_sta_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static void handle_add_proc_queue(struct work_struct *work)
-{
- struct ap_data *ap = container_of(work, struct ap_data,
- add_sta_proc_queue);
- struct sta_info *sta;
- char name[20];
- struct add_sta_proc_data *entry, *prev;
-
- entry = ap->add_sta_proc_entries;
- ap->add_sta_proc_entries = NULL;
-
- while (entry) {
- spin_lock_bh(&ap->sta_table_lock);
- sta = ap_get_sta(ap, entry->addr);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock_bh(&ap->sta_table_lock);
-
- if (sta) {
- sprintf(name, "%pM", sta->addr);
- sta->proc = proc_create_data(
- name, 0, ap->proc,
- &prism2_sta_proc_fops, sta);
-
- atomic_dec(&sta->users);
- }
-
- prev = entry;
- entry = entry->next;
- kfree(prev);
- }
-}
-
-
-static struct sta_info * ap_add_sta(struct ap_data *ap, u8 *addr)
-{
- struct sta_info *sta;
-
- sta = kzalloc(sizeof(struct sta_info), GFP_ATOMIC);
- if (sta == NULL) {
- PDEBUG(DEBUG_AP, "AP: kmalloc failed\n");
- return NULL;
- }
-
- /* initialize STA info data */
- sta->local = ap->local;
- skb_queue_head_init(&sta->tx_buf);
- memcpy(sta->addr, addr, ETH_ALEN);
-
- atomic_inc(&sta->users);
- spin_lock_bh(&ap->sta_table_lock);
- list_add(&sta->list, &ap->sta_list);
- ap->num_sta++;
- ap_sta_hash_add(ap, sta);
- spin_unlock_bh(&ap->sta_table_lock);
-
- if (ap->proc) {
- struct add_sta_proc_data *entry;
- /* schedule a non-interrupt context process to add a procfs
- * entry for the STA since procfs code use GFP_KERNEL */
- entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
- if (entry) {
- memcpy(entry->addr, sta->addr, ETH_ALEN);
- entry->next = ap->add_sta_proc_entries;
- ap->add_sta_proc_entries = entry;
- schedule_work(&ap->add_sta_proc_queue);
- } else
- printk(KERN_DEBUG "Failed to add STA proc data\n");
- }
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- init_timer(&sta->timer);
- sta->timer.expires = jiffies + ap->max_inactivity;
- sta->timer.data = (unsigned long) sta;
- sta->timer.function = ap_handle_timer;
- if (!ap->local->hostapd)
- add_timer(&sta->timer);
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
- return sta;
-}
-
-
-static int ap_tx_rate_ok(int rateidx, struct sta_info *sta,
- local_info_t *local)
-{
- if (rateidx > sta->tx_max_rate ||
- !(sta->tx_supp_rates & (1 << rateidx)))
- return 0;
-
- if (local->tx_rate_control != 0 &&
- !(local->tx_rate_control & (1 << rateidx)))
- return 0;
-
- return 1;
-}
-
-
-static void prism2_check_tx_rates(struct sta_info *sta)
-{
- int i;
-
- sta->tx_supp_rates = 0;
- for (i = 0; i < sizeof(sta->supported_rates); i++) {
- if ((sta->supported_rates[i] & 0x7f) == 2)
- sta->tx_supp_rates |= WLAN_RATE_1M;
- if ((sta->supported_rates[i] & 0x7f) == 4)
- sta->tx_supp_rates |= WLAN_RATE_2M;
- if ((sta->supported_rates[i] & 0x7f) == 11)
- sta->tx_supp_rates |= WLAN_RATE_5M5;
- if ((sta->supported_rates[i] & 0x7f) == 22)
- sta->tx_supp_rates |= WLAN_RATE_11M;
- }
- sta->tx_max_rate = sta->tx_rate = sta->tx_rate_idx = 0;
- if (sta->tx_supp_rates & WLAN_RATE_1M) {
- sta->tx_max_rate = 0;
- if (ap_tx_rate_ok(0, sta, sta->local)) {
- sta->tx_rate = 10;
- sta->tx_rate_idx = 0;
- }
- }
- if (sta->tx_supp_rates & WLAN_RATE_2M) {
- sta->tx_max_rate = 1;
- if (ap_tx_rate_ok(1, sta, sta->local)) {
- sta->tx_rate = 20;
- sta->tx_rate_idx = 1;
- }
- }
- if (sta->tx_supp_rates & WLAN_RATE_5M5) {
- sta->tx_max_rate = 2;
- if (ap_tx_rate_ok(2, sta, sta->local)) {
- sta->tx_rate = 55;
- sta->tx_rate_idx = 2;
- }
- }
- if (sta->tx_supp_rates & WLAN_RATE_11M) {
- sta->tx_max_rate = 3;
- if (ap_tx_rate_ok(3, sta, sta->local)) {
- sta->tx_rate = 110;
- sta->tx_rate_idx = 3;
- }
- }
-}
-
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
-
-static void ap_crypt_init(struct ap_data *ap)
-{
- ap->crypt = lib80211_get_crypto_ops("WEP");
-
- if (ap->crypt) {
- if (ap->crypt->init) {
- ap->crypt_priv = ap->crypt->init(0);
- if (ap->crypt_priv == NULL)
- ap->crypt = NULL;
- else {
- u8 key[WEP_KEY_LEN];
- get_random_bytes(key, WEP_KEY_LEN);
- ap->crypt->set_key(key, WEP_KEY_LEN, NULL,
- ap->crypt_priv);
- }
- }
- }
-
- if (ap->crypt == NULL) {
- printk(KERN_WARNING "AP could not initialize WEP: load module "
- "lib80211_crypt_wep.ko\n");
- }
-}
-
-
-/* Generate challenge data for shared key authentication. IEEE 802.11 specifies
- * that WEP algorithm is used for generating challenge. This should be unique,
- * but otherwise there is not really need for randomness etc. Initialize WEP
- * with pseudo random key and then use increasing IV to get unique challenge
- * streams.
- *
- * Called only as a scheduled task for pending AP frames.
- */
-static char * ap_auth_make_challenge(struct ap_data *ap)
-{
- char *tmpbuf;
- struct sk_buff *skb;
-
- if (ap->crypt == NULL) {
- ap_crypt_init(ap);
- if (ap->crypt == NULL)
- return NULL;
- }
-
- tmpbuf = kmalloc(WLAN_AUTH_CHALLENGE_LEN, GFP_ATOMIC);
- if (tmpbuf == NULL) {
- PDEBUG(DEBUG_AP, "AP: kmalloc failed for challenge\n");
- return NULL;
- }
-
- skb = dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN +
- ap->crypt->extra_mpdu_prefix_len +
- ap->crypt->extra_mpdu_postfix_len);
- if (skb == NULL) {
- kfree(tmpbuf);
- return NULL;
- }
-
- skb_reserve(skb, ap->crypt->extra_mpdu_prefix_len);
- memset(skb_put(skb, WLAN_AUTH_CHALLENGE_LEN), 0,
- WLAN_AUTH_CHALLENGE_LEN);
- if (ap->crypt->encrypt_mpdu(skb, 0, ap->crypt_priv)) {
- dev_kfree_skb(skb);
- kfree(tmpbuf);
- return NULL;
- }
-
- skb_copy_from_linear_data_offset(skb, ap->crypt->extra_mpdu_prefix_len,
- tmpbuf, WLAN_AUTH_CHALLENGE_LEN);
- dev_kfree_skb(skb);
-
- return tmpbuf;
-}
-
-
-/* Called only as a scheduled task for pending AP frames. */
-static void handle_authen(local_info_t *local, struct sk_buff *skb,
- struct hostap_80211_rx_status *rx_stats)
-{
- struct net_device *dev = local->dev;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- size_t hdrlen;
- struct ap_data *ap = local->ap;
- char body[8 + WLAN_AUTH_CHALLENGE_LEN], *challenge = NULL;
- int len, olen;
- u16 auth_alg, auth_transaction, status_code;
- __le16 *pos;
- u16 resp = WLAN_STATUS_SUCCESS;
- struct sta_info *sta = NULL;
- struct lib80211_crypt_data *crypt;
- char *txt = "";
-
- len = skb->len - IEEE80211_MGMT_HDR_LEN;
-
- hdrlen = hostap_80211_get_hdrlen(hdr->frame_control);
-
- if (len < 6) {
- PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload "
- "(len=%d) from %pM\n", dev->name, len, hdr->addr2);
- return;
- }
-
- spin_lock_bh(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock_bh(&local->ap->sta_table_lock);
-
- if (sta && sta->crypt)
- crypt = sta->crypt;
- else {
- int idx = 0;
- if (skb->len >= hdrlen + 3)
- idx = skb->data[hdrlen + 3] >> 6;
- crypt = local->crypt_info.crypt[idx];
- }
-
- pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
- auth_alg = __le16_to_cpu(*pos);
- pos++;
- auth_transaction = __le16_to_cpu(*pos);
- pos++;
- status_code = __le16_to_cpu(*pos);
- pos++;
-
- if (ether_addr_equal(dev->dev_addr, hdr->addr2) ||
- ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) {
- txt = "authentication denied";
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
-
- if (((local->auth_algs & PRISM2_AUTH_OPEN) &&
- auth_alg == WLAN_AUTH_OPEN) ||
- ((local->auth_algs & PRISM2_AUTH_SHARED_KEY) &&
- crypt && auth_alg == WLAN_AUTH_SHARED_KEY)) {
- } else {
- txt = "unsupported algorithm";
- resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
- goto fail;
- }
-
- if (len >= 8) {
- u8 *u = (u8 *) pos;
- if (*u == WLAN_EID_CHALLENGE) {
- if (*(u + 1) != WLAN_AUTH_CHALLENGE_LEN) {
- txt = "invalid challenge len";
- resp = WLAN_STATUS_CHALLENGE_FAIL;
- goto fail;
- }
- if (len - 8 < WLAN_AUTH_CHALLENGE_LEN) {
- txt = "challenge underflow";
- resp = WLAN_STATUS_CHALLENGE_FAIL;
- goto fail;
- }
- challenge = (char *) (u + 2);
- }
- }
-
- if (sta && sta->ap) {
- if (time_after(jiffies, sta->u.ap.last_beacon +
- (10 * sta->listen_interval * HZ) / 1024)) {
- PDEBUG(DEBUG_AP, "%s: no beacons received for a while,"
- " assuming AP %pM is now STA\n",
- dev->name, sta->addr);
- sta->ap = 0;
- sta->flags = 0;
- sta->u.sta.challenge = NULL;
- } else {
- txt = "AP trying to authenticate?";
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
- }
-
- if ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) ||
- (auth_alg == WLAN_AUTH_SHARED_KEY &&
- (auth_transaction == 1 ||
- (auth_transaction == 3 && sta != NULL &&
- sta->u.sta.challenge != NULL)))) {
- } else {
- txt = "unknown authentication transaction number";
- resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
- goto fail;
- }
-
- if (sta == NULL) {
- txt = "new STA";
-
- if (local->ap->num_sta >= MAX_STA_COUNT) {
- /* FIX: might try to remove some old STAs first? */
- txt = "no more room for new STAs";
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
-
- sta = ap_add_sta(local->ap, hdr->addr2);
- if (sta == NULL) {
- txt = "ap_add_sta failed";
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
- }
-
- switch (auth_alg) {
- case WLAN_AUTH_OPEN:
- txt = "authOK";
- /* IEEE 802.11 standard is not completely clear about
- * whether STA is considered authenticated after
- * authentication OK frame has been send or after it
- * has been ACKed. In order to reduce interoperability
- * issues, mark the STA authenticated before ACK. */
- sta->flags |= WLAN_STA_AUTH;
- break;
-
- case WLAN_AUTH_SHARED_KEY:
- if (auth_transaction == 1) {
- if (sta->u.sta.challenge == NULL) {
- sta->u.sta.challenge =
- ap_auth_make_challenge(local->ap);
- if (sta->u.sta.challenge == NULL) {
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
- }
- } else {
- if (sta->u.sta.challenge == NULL ||
- challenge == NULL ||
- memcmp(sta->u.sta.challenge, challenge,
- WLAN_AUTH_CHALLENGE_LEN) != 0 ||
- !ieee80211_has_protected(hdr->frame_control)) {
- txt = "challenge response incorrect";
- resp = WLAN_STATUS_CHALLENGE_FAIL;
- goto fail;
- }
-
- txt = "challenge OK - authOK";
- /* IEEE 802.11 standard is not completely clear about
- * whether STA is considered authenticated after
- * authentication OK frame has been send or after it
- * has been ACKed. In order to reduce interoperability
- * issues, mark the STA authenticated before ACK. */
- sta->flags |= WLAN_STA_AUTH;
- kfree(sta->u.sta.challenge);
- sta->u.sta.challenge = NULL;
- }
- break;
- }
-
- fail:
- pos = (__le16 *) body;
- *pos = cpu_to_le16(auth_alg);
- pos++;
- *pos = cpu_to_le16(auth_transaction + 1);
- pos++;
- *pos = cpu_to_le16(resp); /* status_code */
- pos++;
- olen = 6;
-
- if (resp == WLAN_STATUS_SUCCESS && sta != NULL &&
- sta->u.sta.challenge != NULL &&
- auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 1) {
- u8 *tmp = (u8 *) pos;
- *tmp++ = WLAN_EID_CHALLENGE;
- *tmp++ = WLAN_AUTH_CHALLENGE_LEN;
- pos++;
- memcpy(pos, sta->u.sta.challenge, WLAN_AUTH_CHALLENGE_LEN);
- olen += 2 + WLAN_AUTH_CHALLENGE_LEN;
- }
-
- prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH,
- body, olen, hdr->addr2, ap->tx_callback_auth);
-
- if (sta) {
- sta->last_rx = jiffies;
- atomic_dec(&sta->users);
- }
-
- if (resp) {
- PDEBUG(DEBUG_AP, "%s: %pM auth (alg=%d "
- "trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n",
- dev->name, hdr->addr2,
- auth_alg, auth_transaction, status_code, len,
- le16_to_cpu(hdr->frame_control), resp, txt);
- }
-}
-
-
-/* Called only as a scheduled task for pending AP frames. */
-static void handle_assoc(local_info_t *local, struct sk_buff *skb,
- struct hostap_80211_rx_status *rx_stats, int reassoc)
-{
- struct net_device *dev = local->dev;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- char body[12], *p, *lpos;
- int len, left;
- __le16 *pos;
- u16 resp = WLAN_STATUS_SUCCESS;
- struct sta_info *sta = NULL;
- int send_deauth = 0;
- char *txt = "";
- u8 prev_ap[ETH_ALEN];
-
- left = len = skb->len - IEEE80211_MGMT_HDR_LEN;
-
- if (len < (reassoc ? 10 : 4)) {
- PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload "
- "(len=%d, reassoc=%d) from %pM\n",
- dev->name, len, reassoc, hdr->addr2);
- return;
- }
-
- spin_lock_bh(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
- spin_unlock_bh(&local->ap->sta_table_lock);
- txt = "trying to associate before authentication";
- send_deauth = 1;
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- sta = NULL; /* do not decrement sta->users */
- goto fail;
- }
- atomic_inc(&sta->users);
- spin_unlock_bh(&local->ap->sta_table_lock);
-
- pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN);
- sta->capability = __le16_to_cpu(*pos);
- pos++; left -= 2;
- sta->listen_interval = __le16_to_cpu(*pos);
- pos++; left -= 2;
-
- if (reassoc) {
- memcpy(prev_ap, pos, ETH_ALEN);
- pos++; pos++; pos++; left -= 6;
- } else
- eth_zero_addr(prev_ap);
-
- if (left >= 2) {
- unsigned int ileft;
- unsigned char *u = (unsigned char *) pos;
-
- if (*u == WLAN_EID_SSID) {
- u++; left--;
- ileft = *u;
- u++; left--;
-
- if (ileft > left || ileft > MAX_SSID_LEN) {
- txt = "SSID overflow";
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
-
- if (ileft != strlen(local->essid) ||
- memcmp(local->essid, u, ileft) != 0) {
- txt = "not our SSID";
- resp = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
- goto fail;
- }
-
- u += ileft;
- left -= ileft;
- }
-
- if (left >= 2 && *u == WLAN_EID_SUPP_RATES) {
- u++; left--;
- ileft = *u;
- u++; left--;
-
- if (ileft > left || ileft == 0 ||
- ileft > WLAN_SUPP_RATES_MAX) {
- txt = "SUPP_RATES len error";
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
-
- memset(sta->supported_rates, 0,
- sizeof(sta->supported_rates));
- memcpy(sta->supported_rates, u, ileft);
- prism2_check_tx_rates(sta);
-
- u += ileft;
- left -= ileft;
- }
-
- if (left > 0) {
- PDEBUG(DEBUG_AP, "%s: assoc from %pM"
- " with extra data (%d bytes) [",
- dev->name, hdr->addr2, left);
- while (left > 0) {
- PDEBUG2(DEBUG_AP, "<%02x>", *u);
- u++; left--;
- }
- PDEBUG2(DEBUG_AP, "]\n");
- }
- } else {
- txt = "frame underflow";
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
-
- /* get a unique AID */
- if (sta->aid > 0)
- txt = "OK, old AID";
- else {
- spin_lock_bh(&local->ap->sta_table_lock);
- for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
- if (local->ap->sta_aid[sta->aid - 1] == NULL)
- break;
- if (sta->aid > MAX_AID_TABLE_SIZE) {
- sta->aid = 0;
- spin_unlock_bh(&local->ap->sta_table_lock);
- resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
- txt = "no room for more AIDs";
- } else {
- local->ap->sta_aid[sta->aid - 1] = sta;
- spin_unlock_bh(&local->ap->sta_table_lock);
- txt = "OK, new AID";
- }
- }
-
- fail:
- pos = (__le16 *) body;
-
- if (send_deauth) {
- *pos = cpu_to_le16(WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH);
- pos++;
- } else {
- /* FIX: CF-Pollable and CF-PollReq should be set to match the
- * values in beacons/probe responses */
- /* FIX: how about privacy and WEP? */
- /* capability */
- *pos = cpu_to_le16(WLAN_CAPABILITY_ESS);
- pos++;
-
- /* status_code */
- *pos = cpu_to_le16(resp);
- pos++;
-
- *pos = cpu_to_le16((sta && sta->aid > 0 ? sta->aid : 0) |
- BIT(14) | BIT(15)); /* AID */
- pos++;
-
- /* Supported rates (Information element) */
- p = (char *) pos;
- *p++ = WLAN_EID_SUPP_RATES;
- lpos = p;
- *p++ = 0; /* len */
- if (local->tx_rate_control & WLAN_RATE_1M) {
- *p++ = local->basic_rates & WLAN_RATE_1M ? 0x82 : 0x02;
- (*lpos)++;
- }
- if (local->tx_rate_control & WLAN_RATE_2M) {
- *p++ = local->basic_rates & WLAN_RATE_2M ? 0x84 : 0x04;
- (*lpos)++;
- }
- if (local->tx_rate_control & WLAN_RATE_5M5) {
- *p++ = local->basic_rates & WLAN_RATE_5M5 ?
- 0x8b : 0x0b;
- (*lpos)++;
- }
- if (local->tx_rate_control & WLAN_RATE_11M) {
- *p++ = local->basic_rates & WLAN_RATE_11M ?
- 0x96 : 0x16;
- (*lpos)++;
- }
- pos = (__le16 *) p;
- }
-
- prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT |
- (send_deauth ? IEEE80211_STYPE_DEAUTH :
- (reassoc ? IEEE80211_STYPE_REASSOC_RESP :
- IEEE80211_STYPE_ASSOC_RESP)),
- body, (u8 *) pos - (u8 *) body,
- hdr->addr2,
- send_deauth ? 0 : local->ap->tx_callback_assoc);
-
- if (sta) {
- if (resp == WLAN_STATUS_SUCCESS) {
- sta->last_rx = jiffies;
- /* STA will be marked associated from TX callback, if
- * AssocResp is ACKed */
- }
- atomic_dec(&sta->users);
- }
-
-#if 0
- PDEBUG(DEBUG_AP, "%s: %pM %sassoc (len=%d "
- "prev_ap=%pM) => %d(%d) (%s)\n",
- dev->name,
- hdr->addr2,
- reassoc ? "re" : "", len,
- prev_ap,
- resp, send_deauth, txt);
-#endif
-}
-
-
-/* Called only as a scheduled task for pending AP frames. */
-static void handle_deauth(local_info_t *local, struct sk_buff *skb,
- struct hostap_80211_rx_status *rx_stats)
-{
- struct net_device *dev = local->dev;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- char *body = (char *) (skb->data + IEEE80211_MGMT_HDR_LEN);
- int len;
- u16 reason_code;
- __le16 *pos;
- struct sta_info *sta = NULL;
-
- len = skb->len - IEEE80211_MGMT_HDR_LEN;
-
- if (len < 2) {
- printk("handle_deauth - too short payload (len=%d)\n", len);
- return;
- }
-
- pos = (__le16 *) body;
- reason_code = le16_to_cpu(*pos);
-
- PDEBUG(DEBUG_AP, "%s: deauthentication: %pM len=%d, "
- "reason_code=%d\n", dev->name, hdr->addr2,
- len, reason_code);
-
- spin_lock_bh(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta != NULL) {
- if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap)
- hostap_event_expired_sta(local->dev, sta);
- sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
- }
- spin_unlock_bh(&local->ap->sta_table_lock);
- if (sta == NULL) {
- printk("%s: deauthentication from %pM, "
- "reason_code=%d, but STA not authenticated\n", dev->name,
- hdr->addr2, reason_code);
- }
-}
-
-
-/* Called only as a scheduled task for pending AP frames. */
-static void handle_disassoc(local_info_t *local, struct sk_buff *skb,
- struct hostap_80211_rx_status *rx_stats)
-{
- struct net_device *dev = local->dev;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- char *body = skb->data + IEEE80211_MGMT_HDR_LEN;
- int len;
- u16 reason_code;
- __le16 *pos;
- struct sta_info *sta = NULL;
-
- len = skb->len - IEEE80211_MGMT_HDR_LEN;
-
- if (len < 2) {
- printk("handle_disassoc - too short payload (len=%d)\n", len);
- return;
- }
-
- pos = (__le16 *) body;
- reason_code = le16_to_cpu(*pos);
-
- PDEBUG(DEBUG_AP, "%s: disassociation: %pM len=%d, "
- "reason_code=%d\n", dev->name, hdr->addr2,
- len, reason_code);
-
- spin_lock_bh(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta != NULL) {
- if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap)
- hostap_event_expired_sta(local->dev, sta);
- sta->flags &= ~WLAN_STA_ASSOC;
- }
- spin_unlock_bh(&local->ap->sta_table_lock);
- if (sta == NULL) {
- printk("%s: disassociation from %pM, "
- "reason_code=%d, but STA not authenticated\n",
- dev->name, hdr->addr2, reason_code);
- }
-}
-
-
-/* Called only as a scheduled task for pending AP frames. */
-static void ap_handle_data_nullfunc(local_info_t *local,
- struct ieee80211_hdr *hdr)
-{
- struct net_device *dev = local->dev;
-
- /* some STA f/w's seem to require control::ACK frame for
- * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does
- * not send this..
- * send control::ACK for the data::nullfunc */
-
- printk(KERN_DEBUG "Sending control::ACK for data::nullfunc\n");
- prism2_send_mgmt(dev, IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK,
- NULL, 0, hdr->addr2, 0);
-}
-
-
-/* Called only as a scheduled task for pending AP frames. */
-static void ap_handle_dropped_data(local_info_t *local,
- struct ieee80211_hdr *hdr)
-{
- struct net_device *dev = local->dev;
- struct sta_info *sta;
- __le16 reason;
-
- spin_lock_bh(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock_bh(&local->ap->sta_table_lock);
-
- if (sta != NULL && (sta->flags & WLAN_STA_ASSOC)) {
- PDEBUG(DEBUG_AP, "ap_handle_dropped_data: STA is now okay?\n");
- atomic_dec(&sta->users);
- return;
- }
-
- reason = cpu_to_le16(WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
- prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT |
- ((sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) ?
- IEEE80211_STYPE_DEAUTH : IEEE80211_STYPE_DISASSOC),
- (char *) &reason, sizeof(reason), hdr->addr2, 0);
-
- if (sta)
- atomic_dec(&sta->users);
-}
-
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
-
-/* Called only as a scheduled task for pending AP frames. */
-static void pspoll_send_buffered(local_info_t *local, struct sta_info *sta,
- struct sk_buff *skb)
-{
- struct hostap_skb_tx_data *meta;
-
- if (!(sta->flags & WLAN_STA_PS)) {
- /* Station has moved to non-PS mode, so send all buffered
- * frames using normal device queue. */
- dev_queue_xmit(skb);
- return;
- }
-
- /* add a flag for hostap_handle_sta_tx() to know that this skb should
- * be passed through even though STA is using PS */
- meta = (struct hostap_skb_tx_data *) skb->cb;
- meta->flags |= HOSTAP_TX_FLAGS_BUFFERED_FRAME;
- if (!skb_queue_empty(&sta->tx_buf)) {
- /* indicate to STA that more frames follow */
- meta->flags |= HOSTAP_TX_FLAGS_ADD_MOREDATA;
- }
- dev_queue_xmit(skb);
-}
-
-
-/* Called only as a scheduled task for pending AP frames. */
-static void handle_pspoll(local_info_t *local,
- struct ieee80211_hdr *hdr,
- struct hostap_80211_rx_status *rx_stats)
-{
- struct net_device *dev = local->dev;
- struct sta_info *sta;
- u16 aid;
- struct sk_buff *skb;
-
- PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=%pM, TA=%pM PWRMGT=%d\n",
- hdr->addr1, hdr->addr2, !!ieee80211_has_pm(hdr->frame_control));
-
- if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) {
- PDEBUG(DEBUG_AP,
- "handle_pspoll - addr1(BSSID)=%pM not own MAC\n",
- hdr->addr1);
- return;
- }
-
- aid = le16_to_cpu(hdr->duration_id);
- if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) {
- PDEBUG(DEBUG_PS, " PSPOLL and AID[15:14] not set\n");
- return;
- }
- aid &= ~(BIT(15) | BIT(14));
- if (aid == 0 || aid > MAX_AID_TABLE_SIZE) {
- PDEBUG(DEBUG_PS, " invalid aid=%d\n", aid);
- return;
- }
- PDEBUG(DEBUG_PS2, " aid=%d\n", aid);
-
- spin_lock_bh(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock_bh(&local->ap->sta_table_lock);
-
- if (sta == NULL) {
- PDEBUG(DEBUG_PS, " STA not found\n");
- return;
- }
- if (sta->aid != aid) {
- PDEBUG(DEBUG_PS, " received aid=%i does not match with "
- "assoc.aid=%d\n", aid, sta->aid);
- return;
- }
-
- /* FIX: todo:
- * - add timeout for buffering (clear aid in TIM vector if buffer timed
- * out (expiry time must be longer than ListenInterval for
- * the corresponding STA; "8802-11: 11.2.1.9 AP aging function"
- * - what to do, if buffered, pspolled, and sent frame is not ACKed by
- * sta; store buffer for later use and leave TIM aid bit set? use
- * TX event to check whether frame was ACKed?
- */
-
- while ((skb = skb_dequeue(&sta->tx_buf)) != NULL) {
- /* send buffered frame .. */
- PDEBUG(DEBUG_PS2, "Sending buffered frame to STA after PS POLL"
- " (buffer_count=%d)\n", skb_queue_len(&sta->tx_buf));
-
- pspoll_send_buffered(local, sta, skb);
-
- if (sta->flags & WLAN_STA_PS) {
- /* send only one buffered packet per PS Poll */
- /* FIX: should ignore further PS Polls until the
- * buffered packet that was just sent is acknowledged
- * (Tx or TxExc event) */
- break;
- }
- }
-
- if (skb_queue_empty(&sta->tx_buf)) {
- /* try to clear aid from TIM */
- if (!(sta->flags & WLAN_STA_TIM))
- PDEBUG(DEBUG_PS2, "Re-unsetting TIM for aid %d\n",
- aid);
- hostap_set_tim(local, aid, 0);
- sta->flags &= ~WLAN_STA_TIM;
- }
-
- atomic_dec(&sta->users);
-}
-
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
-
-static void handle_wds_oper_queue(struct work_struct *work)
-{
- struct ap_data *ap = container_of(work, struct ap_data,
- wds_oper_queue);
- local_info_t *local = ap->local;
- struct wds_oper_data *entry, *prev;
-
- spin_lock_bh(&local->lock);
- entry = local->ap->wds_oper_entries;
- local->ap->wds_oper_entries = NULL;
- spin_unlock_bh(&local->lock);
-
- while (entry) {
- PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection "
- "to AP %pM\n",
- local->dev->name,
- entry->type == WDS_ADD ? "adding" : "removing",
- entry->addr);
- if (entry->type == WDS_ADD)
- prism2_wds_add(local, entry->addr, 0);
- else if (entry->type == WDS_DEL)
- prism2_wds_del(local, entry->addr, 0, 1);
-
- prev = entry;
- entry = entry->next;
- kfree(prev);
- }
-}
-
-
-/* Called only as a scheduled task for pending AP frames. */
-static void handle_beacon(local_info_t *local, struct sk_buff *skb,
- struct hostap_80211_rx_status *rx_stats)
-{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- char *body = skb->data + IEEE80211_MGMT_HDR_LEN;
- int len, left;
- u16 beacon_int, capability;
- __le16 *pos;
- char *ssid = NULL;
- unsigned char *supp_rates = NULL;
- int ssid_len = 0, supp_rates_len = 0;
- struct sta_info *sta = NULL;
- int new_sta = 0, channel = -1;
-
- len = skb->len - IEEE80211_MGMT_HDR_LEN;
-
- if (len < 8 + 2 + 2) {
- printk(KERN_DEBUG "handle_beacon - too short payload "
- "(len=%d)\n", len);
- return;
- }
-
- pos = (__le16 *) body;
- left = len;
-
- /* Timestamp (8 octets) */
- pos += 4; left -= 8;
- /* Beacon interval (2 octets) */
- beacon_int = le16_to_cpu(*pos);
- pos++; left -= 2;
- /* Capability information (2 octets) */
- capability = le16_to_cpu(*pos);
- pos++; left -= 2;
-
- if (local->ap->ap_policy != AP_OTHER_AP_EVEN_IBSS &&
- capability & WLAN_CAPABILITY_IBSS)
- return;
-
- if (left >= 2) {
- unsigned int ileft;
- unsigned char *u = (unsigned char *) pos;
-
- if (*u == WLAN_EID_SSID) {
- u++; left--;
- ileft = *u;
- u++; left--;
-
- if (ileft > left || ileft > MAX_SSID_LEN) {
- PDEBUG(DEBUG_AP, "SSID: overflow\n");
- return;
- }
-
- if (local->ap->ap_policy == AP_OTHER_AP_SAME_SSID &&
- (ileft != strlen(local->essid) ||
- memcmp(local->essid, u, ileft) != 0)) {
- /* not our SSID */
- return;
- }
-
- ssid = u;
- ssid_len = ileft;
-
- u += ileft;
- left -= ileft;
- }
-
- if (*u == WLAN_EID_SUPP_RATES) {
- u++; left--;
- ileft = *u;
- u++; left--;
-
- if (ileft > left || ileft == 0 || ileft > 8) {
- PDEBUG(DEBUG_AP, " - SUPP_RATES len error\n");
- return;
- }
-
- supp_rates = u;
- supp_rates_len = ileft;
-
- u += ileft;
- left -= ileft;
- }
-
- if (*u == WLAN_EID_DS_PARAMS) {
- u++; left--;
- ileft = *u;
- u++; left--;
-
- if (ileft > left || ileft != 1) {
- PDEBUG(DEBUG_AP, " - DS_PARAMS len error\n");
- return;
- }
-
- channel = *u;
-
- u += ileft;
- left -= ileft;
- }
- }
-
- spin_lock_bh(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta != NULL)
- atomic_inc(&sta->users);
- spin_unlock_bh(&local->ap->sta_table_lock);
-
- if (sta == NULL) {
- /* add new AP */
- new_sta = 1;
- sta = ap_add_sta(local->ap, hdr->addr2);
- if (sta == NULL) {
- printk(KERN_INFO "prism2: kmalloc failed for AP "
- "data structure\n");
- return;
- }
- hostap_event_new_sta(local->dev, sta);
-
- /* mark APs authentication and associated for pseudo ad-hoc
- * style communication */
- sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
-
- if (local->ap->autom_ap_wds) {
- hostap_wds_link_oper(local, sta->addr, WDS_ADD);
- }
- }
-
- sta->ap = 1;
- if (ssid) {
- sta->u.ap.ssid_len = ssid_len;
- memcpy(sta->u.ap.ssid, ssid, ssid_len);
- sta->u.ap.ssid[ssid_len] = '\0';
- } else {
- sta->u.ap.ssid_len = 0;
- sta->u.ap.ssid[0] = '\0';
- }
- sta->u.ap.channel = channel;
- sta->rx_packets++;
- sta->rx_bytes += len;
- sta->u.ap.last_beacon = sta->last_rx = jiffies;
- sta->capability = capability;
- sta->listen_interval = beacon_int;
-
- atomic_dec(&sta->users);
-
- if (new_sta) {
- memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
- memcpy(sta->supported_rates, supp_rates, supp_rates_len);
- prism2_check_tx_rates(sta);
- }
-}
-
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
-
-/* Called only as a tasklet. */
-static void handle_ap_item(local_info_t *local, struct sk_buff *skb,
- struct hostap_80211_rx_status *rx_stats)
-{
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- struct net_device *dev = local->dev;
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
- u16 fc, type, stype;
- struct ieee80211_hdr *hdr;
-
- /* FIX: should give skb->len to handler functions and check that the
- * buffer is long enough */
- hdr = (struct ieee80211_hdr *) skb->data;
- fc = le16_to_cpu(hdr->frame_control);
- type = fc & IEEE80211_FCTL_FTYPE;
- stype = fc & IEEE80211_FCTL_STYPE;
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- if (!local->hostapd && type == IEEE80211_FTYPE_DATA) {
- PDEBUG(DEBUG_AP, "handle_ap_item - data frame\n");
-
- if (!(fc & IEEE80211_FCTL_TODS) ||
- (fc & IEEE80211_FCTL_FROMDS)) {
- if (stype == IEEE80211_STYPE_NULLFUNC) {
- /* no ToDS nullfunc seems to be used to check
- * AP association; so send reject message to
- * speed up re-association */
- ap_handle_dropped_data(local, hdr);
- goto done;
- }
- PDEBUG(DEBUG_AP, " not ToDS frame (fc=0x%04x)\n",
- fc);
- goto done;
- }
-
- if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) {
- PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=%pM"
- " not own MAC\n", hdr->addr1);
- goto done;
- }
-
- if (local->ap->nullfunc_ack &&
- stype == IEEE80211_STYPE_NULLFUNC)
- ap_handle_data_nullfunc(local, hdr);
- else
- ap_handle_dropped_data(local, hdr);
- goto done;
- }
-
- if (type == IEEE80211_FTYPE_MGMT && stype == IEEE80211_STYPE_BEACON) {
- handle_beacon(local, skb, rx_stats);
- goto done;
- }
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
- if (type == IEEE80211_FTYPE_CTL && stype == IEEE80211_STYPE_PSPOLL) {
- handle_pspoll(local, hdr, rx_stats);
- goto done;
- }
-
- if (local->hostapd) {
- PDEBUG(DEBUG_AP, "Unknown frame in AP queue: type=0x%02x "
- "subtype=0x%02x\n", type, stype);
- goto done;
- }
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- if (type != IEEE80211_FTYPE_MGMT) {
- PDEBUG(DEBUG_AP, "handle_ap_item - not a management frame?\n");
- goto done;
- }
-
- if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) {
- PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%pM"
- " not own MAC\n", hdr->addr1);
- goto done;
- }
-
- if (!ether_addr_equal(hdr->addr3, dev->dev_addr)) {
- PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=%pM"
- " not own MAC\n", hdr->addr3);
- goto done;
- }
-
- switch (stype) {
- case IEEE80211_STYPE_ASSOC_REQ:
- handle_assoc(local, skb, rx_stats, 0);
- break;
- case IEEE80211_STYPE_ASSOC_RESP:
- PDEBUG(DEBUG_AP, "==> ASSOC RESP (ignored)\n");
- break;
- case IEEE80211_STYPE_REASSOC_REQ:
- handle_assoc(local, skb, rx_stats, 1);
- break;
- case IEEE80211_STYPE_REASSOC_RESP:
- PDEBUG(DEBUG_AP, "==> REASSOC RESP (ignored)\n");
- break;
- case IEEE80211_STYPE_ATIM:
- PDEBUG(DEBUG_AP, "==> ATIM (ignored)\n");
- break;
- case IEEE80211_STYPE_DISASSOC:
- handle_disassoc(local, skb, rx_stats);
- break;
- case IEEE80211_STYPE_AUTH:
- handle_authen(local, skb, rx_stats);
- break;
- case IEEE80211_STYPE_DEAUTH:
- handle_deauth(local, skb, rx_stats);
- break;
- default:
- PDEBUG(DEBUG_AP, "Unknown mgmt frame subtype 0x%02x\n",
- stype >> 4);
- break;
- }
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
- done:
- dev_kfree_skb(skb);
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-void hostap_rx(struct net_device *dev, struct sk_buff *skb,
- struct hostap_80211_rx_status *rx_stats)
-{
- struct hostap_interface *iface;
- local_info_t *local;
- struct ieee80211_hdr *hdr;
-
- iface = netdev_priv(dev);
- local = iface->local;
-
- if (skb->len < 16)
- goto drop;
-
- dev->stats.rx_packets++;
-
- hdr = (struct ieee80211_hdr *) skb->data;
-
- if (local->ap->ap_policy == AP_OTHER_AP_SKIP_ALL &&
- ieee80211_is_beacon(hdr->frame_control))
- goto drop;
-
- skb->protocol = cpu_to_be16(ETH_P_HOSTAP);
- handle_ap_item(local, skb, rx_stats);
- return;
-
- drop:
- dev_kfree_skb(skb);
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-static void schedule_packet_send(local_info_t *local, struct sta_info *sta)
-{
- struct sk_buff *skb;
- struct ieee80211_hdr *hdr;
- struct hostap_80211_rx_status rx_stats;
-
- if (skb_queue_empty(&sta->tx_buf))
- return;
-
- skb = dev_alloc_skb(16);
- if (skb == NULL) {
- printk(KERN_DEBUG "%s: schedule_packet_send: skb alloc "
- "failed\n", local->dev->name);
- return;
- }
-
- hdr = (struct ieee80211_hdr *) skb_put(skb, 16);
-
- /* Generate a fake pspoll frame to start packet delivery */
- hdr->frame_control = cpu_to_le16(
- IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
- memcpy(hdr->addr1, local->dev->dev_addr, ETH_ALEN);
- memcpy(hdr->addr2, sta->addr, ETH_ALEN);
- hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14));
-
- PDEBUG(DEBUG_PS2,
- "%s: Scheduling buffered packet delivery for STA %pM\n",
- local->dev->name, sta->addr);
-
- skb->dev = local->dev;
-
- memset(&rx_stats, 0, sizeof(rx_stats));
- hostap_rx(local->dev, skb, &rx_stats);
-}
-
-
-int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[],
- struct iw_quality qual[], int buf_size,
- int aplist)
-{
- struct ap_data *ap = local->ap;
- struct list_head *ptr;
- int count = 0;
-
- spin_lock_bh(&ap->sta_table_lock);
-
- for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list;
- ptr = ptr->next) {
- struct sta_info *sta = (struct sta_info *) ptr;
-
- if (aplist && !sta->ap)
- continue;
- addr[count].sa_family = ARPHRD_ETHER;
- memcpy(addr[count].sa_data, sta->addr, ETH_ALEN);
- if (sta->last_rx_silence == 0)
- qual[count].qual = sta->last_rx_signal < 27 ?
- 0 : (sta->last_rx_signal - 27) * 92 / 127;
- else
- qual[count].qual = sta->last_rx_signal -
- sta->last_rx_silence - 35;
- qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal);
- qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
- qual[count].updated = sta->last_rx_updated;
-
- sta->last_rx_updated = IW_QUAL_DBM;
-
- count++;
- if (count >= buf_size)
- break;
- }
- spin_unlock_bh(&ap->sta_table_lock);
-
- return count;
-}
-
-
-/* Translate our list of Access Points & Stations to a card independent
- * format that the Wireless Tools will understand - Jean II */
-int prism2_ap_translate_scan(struct net_device *dev,
- struct iw_request_info *info, char *buffer)
-{
- struct hostap_interface *iface;
- local_info_t *local;
- struct ap_data *ap;
- struct list_head *ptr;
- struct iw_event iwe;
- char *current_ev = buffer;
- char *end_buf = buffer + IW_SCAN_MAX_DATA;
-#if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT)
- char buf[64];
-#endif
-
- iface = netdev_priv(dev);
- local = iface->local;
- ap = local->ap;
-
- spin_lock_bh(&ap->sta_table_lock);
-
- for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list;
- ptr = ptr->next) {
- struct sta_info *sta = (struct sta_info *) ptr;
-
- /* First entry *MUST* be the AP MAC address */
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWAP;
- iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
- memcpy(iwe.u.ap_addr.sa_data, sta->addr, ETH_ALEN);
- iwe.len = IW_EV_ADDR_LEN;
- current_ev = iwe_stream_add_event(info, current_ev, end_buf,
- &iwe, IW_EV_ADDR_LEN);
-
- /* Use the mode to indicate if it's a station or
- * an Access Point */
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWMODE;
- if (sta->ap)
- iwe.u.mode = IW_MODE_MASTER;
- else
- iwe.u.mode = IW_MODE_INFRA;
- iwe.len = IW_EV_UINT_LEN;
- current_ev = iwe_stream_add_event(info, current_ev, end_buf,
- &iwe, IW_EV_UINT_LEN);
-
- /* Some quality */
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVQUAL;
- if (sta->last_rx_silence == 0)
- iwe.u.qual.qual = sta->last_rx_signal < 27 ?
- 0 : (sta->last_rx_signal - 27) * 92 / 127;
- else
- iwe.u.qual.qual = sta->last_rx_signal -
- sta->last_rx_silence - 35;
- iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal);
- iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
- iwe.u.qual.updated = sta->last_rx_updated;
- iwe.len = IW_EV_QUAL_LEN;
- current_ev = iwe_stream_add_event(info, current_ev, end_buf,
- &iwe, IW_EV_QUAL_LEN);
-
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- if (sta->ap) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWESSID;
- iwe.u.data.length = sta->u.ap.ssid_len;
- iwe.u.data.flags = 1;
- current_ev = iwe_stream_add_point(info, current_ev,
- end_buf, &iwe,
- sta->u.ap.ssid);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWENCODE;
- if (sta->capability & WLAN_CAPABILITY_PRIVACY)
- iwe.u.data.flags =
- IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
- else
- iwe.u.data.flags = IW_ENCODE_DISABLED;
- current_ev = iwe_stream_add_point(info, current_ev,
- end_buf, &iwe,
- sta->u.ap.ssid);
-
- if (sta->u.ap.channel > 0 &&
- sta->u.ap.channel <= FREQ_COUNT) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWFREQ;
- iwe.u.freq.m = freq_list[sta->u.ap.channel - 1]
- * 100000;
- iwe.u.freq.e = 1;
- current_ev = iwe_stream_add_event(
- info, current_ev, end_buf, &iwe,
- IW_EV_FREQ_LEN);
- }
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVCUSTOM;
- sprintf(buf, "beacon_interval=%d",
- sta->listen_interval);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(info, current_ev,
- end_buf, &iwe, buf);
- }
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
-
- sta->last_rx_updated = IW_QUAL_DBM;
-
- /* To be continued, we should make good use of IWEVCUSTOM */
- }
-
- spin_unlock_bh(&ap->sta_table_lock);
-
- return current_ev - buffer;
-}
-
-
-static int prism2_hostapd_add_sta(struct ap_data *ap,
- struct prism2_hostapd_param *param)
-{
- struct sta_info *sta;
-
- spin_lock_bh(&ap->sta_table_lock);
- sta = ap_get_sta(ap, param->sta_addr);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock_bh(&ap->sta_table_lock);
-
- if (sta == NULL) {
- sta = ap_add_sta(ap, param->sta_addr);
- if (sta == NULL)
- return -1;
- }
-
- if (!(sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
- hostap_event_new_sta(sta->local->dev, sta);
-
- sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
- sta->last_rx = jiffies;
- sta->aid = param->u.add_sta.aid;
- sta->capability = param->u.add_sta.capability;
- sta->tx_supp_rates = param->u.add_sta.tx_supp_rates;
- if (sta->tx_supp_rates & WLAN_RATE_1M)
- sta->supported_rates[0] = 2;
- if (sta->tx_supp_rates & WLAN_RATE_2M)
- sta->supported_rates[1] = 4;
- if (sta->tx_supp_rates & WLAN_RATE_5M5)
- sta->supported_rates[2] = 11;
- if (sta->tx_supp_rates & WLAN_RATE_11M)
- sta->supported_rates[3] = 22;
- prism2_check_tx_rates(sta);
- atomic_dec(&sta->users);
- return 0;
-}
-
-
-static int prism2_hostapd_remove_sta(struct ap_data *ap,
- struct prism2_hostapd_param *param)
-{
- struct sta_info *sta;
-
- spin_lock_bh(&ap->sta_table_lock);
- sta = ap_get_sta(ap, param->sta_addr);
- if (sta) {
- ap_sta_hash_del(ap, sta);
- list_del(&sta->list);
- }
- spin_unlock_bh(&ap->sta_table_lock);
-
- if (!sta)
- return -ENOENT;
-
- if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local)
- hostap_event_expired_sta(sta->local->dev, sta);
- ap_free_sta(ap, sta);
-
- return 0;
-}
-
-
-static int prism2_hostapd_get_info_sta(struct ap_data *ap,
- struct prism2_hostapd_param *param)
-{
- struct sta_info *sta;
-
- spin_lock_bh(&ap->sta_table_lock);
- sta = ap_get_sta(ap, param->sta_addr);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock_bh(&ap->sta_table_lock);
-
- if (!sta)
- return -ENOENT;
-
- param->u.get_info_sta.inactive_sec = (jiffies - sta->last_rx) / HZ;
-
- atomic_dec(&sta->users);
-
- return 1;
-}
-
-
-static int prism2_hostapd_set_flags_sta(struct ap_data *ap,
- struct prism2_hostapd_param *param)
-{
- struct sta_info *sta;
-
- spin_lock_bh(&ap->sta_table_lock);
- sta = ap_get_sta(ap, param->sta_addr);
- if (sta) {
- sta->flags |= param->u.set_flags_sta.flags_or;
- sta->flags &= param->u.set_flags_sta.flags_and;
- }
- spin_unlock_bh(&ap->sta_table_lock);
-
- if (!sta)
- return -ENOENT;
-
- return 0;
-}
-
-
-static int prism2_hostapd_sta_clear_stats(struct ap_data *ap,
- struct prism2_hostapd_param *param)
-{
- struct sta_info *sta;
- int rate;
-
- spin_lock_bh(&ap->sta_table_lock);
- sta = ap_get_sta(ap, param->sta_addr);
- if (sta) {
- sta->rx_packets = sta->tx_packets = 0;
- sta->rx_bytes = sta->tx_bytes = 0;
- for (rate = 0; rate < WLAN_RATE_COUNT; rate++) {
- sta->tx_count[rate] = 0;
- sta->rx_count[rate] = 0;
- }
- }
- spin_unlock_bh(&ap->sta_table_lock);
-
- if (!sta)
- return -ENOENT;
-
- return 0;
-}
-
-
-int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param)
-{
- switch (param->cmd) {
- case PRISM2_HOSTAPD_FLUSH:
- ap_control_kickall(ap);
- return 0;
- case PRISM2_HOSTAPD_ADD_STA:
- return prism2_hostapd_add_sta(ap, param);
- case PRISM2_HOSTAPD_REMOVE_STA:
- return prism2_hostapd_remove_sta(ap, param);
- case PRISM2_HOSTAPD_GET_INFO_STA:
- return prism2_hostapd_get_info_sta(ap, param);
- case PRISM2_HOSTAPD_SET_FLAGS_STA:
- return prism2_hostapd_set_flags_sta(ap, param);
- case PRISM2_HOSTAPD_STA_CLEAR_STATS:
- return prism2_hostapd_sta_clear_stats(ap, param);
- default:
- printk(KERN_WARNING "prism2_hostapd: unknown cmd=%d\n",
- param->cmd);
- return -EOPNOTSUPP;
- }
-}
-
-
-/* Update station info for host-based TX rate control and return current
- * TX rate */
-static int ap_update_sta_tx_rate(struct sta_info *sta, struct net_device *dev)
-{
- int ret = sta->tx_rate;
- struct hostap_interface *iface;
- local_info_t *local;
-
- iface = netdev_priv(dev);
- local = iface->local;
-
- sta->tx_count[sta->tx_rate_idx]++;
- sta->tx_since_last_failure++;
- sta->tx_consecutive_exc = 0;
- if (sta->tx_since_last_failure >= WLAN_RATE_UPDATE_COUNT &&
- sta->tx_rate_idx < sta->tx_max_rate) {
- /* use next higher rate */
- int old_rate, new_rate;
- old_rate = new_rate = sta->tx_rate_idx;
- while (new_rate < sta->tx_max_rate) {
- new_rate++;
- if (ap_tx_rate_ok(new_rate, sta, local)) {
- sta->tx_rate_idx = new_rate;
- break;
- }
- }
- if (old_rate != sta->tx_rate_idx) {
- switch (sta->tx_rate_idx) {
- case 0: sta->tx_rate = 10; break;
- case 1: sta->tx_rate = 20; break;
- case 2: sta->tx_rate = 55; break;
- case 3: sta->tx_rate = 110; break;
- default: sta->tx_rate = 0; break;
- }
- PDEBUG(DEBUG_AP, "%s: STA %pM TX rate raised to %d\n",
- dev->name, sta->addr, sta->tx_rate);
- }
- sta->tx_since_last_failure = 0;
- }
-
- return ret;
-}
-
-
-/* Called only from software IRQ. Called for each TX frame prior possible
- * encryption and transmit. */
-ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx)
-{
- struct sta_info *sta = NULL;
- struct sk_buff *skb = tx->skb;
- int set_tim, ret;
- struct ieee80211_hdr *hdr;
- struct hostap_skb_tx_data *meta;
-
- meta = (struct hostap_skb_tx_data *) skb->cb;
- ret = AP_TX_CONTINUE;
- if (local->ap == NULL || skb->len < 10 ||
- meta->iface->type == HOSTAP_INTERFACE_STA)
- goto out;
-
- hdr = (struct ieee80211_hdr *) skb->data;
-
- if (hdr->addr1[0] & 0x01) {
- /* broadcast/multicast frame - no AP related processing */
- if (local->ap->num_sta <= 0)
- ret = AP_TX_DROP;
- goto out;
- }
-
- /* unicast packet - check whether destination STA is associated */
- spin_lock(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr1);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock(&local->ap->sta_table_lock);
-
- if (local->iw_mode == IW_MODE_MASTER && sta == NULL &&
- !(meta->flags & HOSTAP_TX_FLAGS_WDS) &&
- meta->iface->type != HOSTAP_INTERFACE_MASTER &&
- meta->iface->type != HOSTAP_INTERFACE_AP) {
-#if 0
- /* This can happen, e.g., when wlan0 is added to a bridge and
- * bridging code does not know which port is the correct target
- * for a unicast frame. In this case, the packet is send to all
- * ports of the bridge. Since this is a valid scenario, do not
- * print out any errors here. */
- if (net_ratelimit()) {
- printk(KERN_DEBUG "AP: drop packet to non-associated "
- "STA %pM\n", hdr->addr1);
- }
-#endif
- local->ap->tx_drop_nonassoc++;
- ret = AP_TX_DROP;
- goto out;
- }
-
- if (sta == NULL)
- goto out;
-
- if (!(sta->flags & WLAN_STA_AUTHORIZED))
- ret = AP_TX_CONTINUE_NOT_AUTHORIZED;
-
- /* Set tx_rate if using host-based TX rate control */
- if (!local->fw_tx_rate_control)
- local->ap->last_tx_rate = meta->rate =
- ap_update_sta_tx_rate(sta, local->dev);
-
- if (local->iw_mode != IW_MODE_MASTER)
- goto out;
-
- if (!(sta->flags & WLAN_STA_PS))
- goto out;
-
- if (meta->flags & HOSTAP_TX_FLAGS_ADD_MOREDATA) {
- /* indicate to STA that more frames follow */
- hdr->frame_control |=
- cpu_to_le16(IEEE80211_FCTL_MOREDATA);
- }
-
- if (meta->flags & HOSTAP_TX_FLAGS_BUFFERED_FRAME) {
- /* packet was already buffered and now send due to
- * PS poll, so do not rebuffer it */
- goto out;
- }
-
- if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) {
- PDEBUG(DEBUG_PS, "%s: No more space in STA (%pM)'s"
- "PS mode buffer\n",
- local->dev->name, sta->addr);
- /* Make sure that TIM is set for the station (it might not be
- * after AP wlan hw reset). */
- /* FIX: should fix hw reset to restore bits based on STA
- * buffer state.. */
- hostap_set_tim(local, sta->aid, 1);
- sta->flags |= WLAN_STA_TIM;
- ret = AP_TX_DROP;
- goto out;
- }
-
- /* STA in PS mode, buffer frame for later delivery */
- set_tim = skb_queue_empty(&sta->tx_buf);
- skb_queue_tail(&sta->tx_buf, skb);
- /* FIX: could save RX time to skb and expire buffered frames after
- * some time if STA does not poll for them */
-
- if (set_tim) {
- if (sta->flags & WLAN_STA_TIM)
- PDEBUG(DEBUG_PS2, "Re-setting TIM for aid %d\n",
- sta->aid);
- hostap_set_tim(local, sta->aid, 1);
- sta->flags |= WLAN_STA_TIM;
- }
-
- ret = AP_TX_BUFFERED;
-
- out:
- if (sta != NULL) {
- if (ret == AP_TX_CONTINUE ||
- ret == AP_TX_CONTINUE_NOT_AUTHORIZED) {
- sta->tx_packets++;
- sta->tx_bytes += skb->len;
- sta->last_tx = jiffies;
- }
-
- if ((ret == AP_TX_CONTINUE ||
- ret == AP_TX_CONTINUE_NOT_AUTHORIZED) &&
- sta->crypt && tx->host_encrypt) {
- tx->crypt = sta->crypt;
- tx->sta_ptr = sta; /* hostap_handle_sta_release() will
- * be called to release sta info
- * later */
- } else
- atomic_dec(&sta->users);
- }
-
- return ret;
-}
-
-
-void hostap_handle_sta_release(void *ptr)
-{
- struct sta_info *sta = ptr;
- atomic_dec(&sta->users);
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb)
-{
- struct sta_info *sta;
- struct ieee80211_hdr *hdr;
- struct hostap_skb_tx_data *meta;
-
- hdr = (struct ieee80211_hdr *) skb->data;
- meta = (struct hostap_skb_tx_data *) skb->cb;
-
- spin_lock(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr1);
- if (!sta) {
- spin_unlock(&local->ap->sta_table_lock);
- PDEBUG(DEBUG_AP, "%s: Could not find STA %pM"
- " for this TX error (@%lu)\n",
- local->dev->name, hdr->addr1, jiffies);
- return;
- }
-
- sta->tx_since_last_failure = 0;
- sta->tx_consecutive_exc++;
-
- if (sta->tx_consecutive_exc >= WLAN_RATE_DECREASE_THRESHOLD &&
- sta->tx_rate_idx > 0 && meta->rate <= sta->tx_rate) {
- /* use next lower rate */
- int old, rate;
- old = rate = sta->tx_rate_idx;
- while (rate > 0) {
- rate--;
- if (ap_tx_rate_ok(rate, sta, local)) {
- sta->tx_rate_idx = rate;
- break;
- }
- }
- if (old != sta->tx_rate_idx) {
- switch (sta->tx_rate_idx) {
- case 0: sta->tx_rate = 10; break;
- case 1: sta->tx_rate = 20; break;
- case 2: sta->tx_rate = 55; break;
- case 3: sta->tx_rate = 110; break;
- default: sta->tx_rate = 0; break;
- }
- PDEBUG(DEBUG_AP,
- "%s: STA %pM TX rate lowered to %d\n",
- local->dev->name, sta->addr, sta->tx_rate);
- }
- sta->tx_consecutive_exc = 0;
- }
- spin_unlock(&local->ap->sta_table_lock);
-}
-
-
-static void hostap_update_sta_ps2(local_info_t *local, struct sta_info *sta,
- int pwrmgt, int type, int stype)
-{
- if (pwrmgt && !(sta->flags & WLAN_STA_PS)) {
- sta->flags |= WLAN_STA_PS;
- PDEBUG(DEBUG_PS2, "STA %pM changed to use PS "
- "mode (type=0x%02X, stype=0x%02X)\n",
- sta->addr, type >> 2, stype >> 4);
- } else if (!pwrmgt && (sta->flags & WLAN_STA_PS)) {
- sta->flags &= ~WLAN_STA_PS;
- PDEBUG(DEBUG_PS2, "STA %pM changed to not use "
- "PS mode (type=0x%02X, stype=0x%02X)\n",
- sta->addr, type >> 2, stype >> 4);
- if (type != IEEE80211_FTYPE_CTL ||
- stype != IEEE80211_STYPE_PSPOLL)
- schedule_packet_send(local, sta);
- }
-}
-
-
-/* Called only as a tasklet (software IRQ). Called for each RX frame to update
- * STA power saving state. pwrmgt is a flag from 802.11 frame_control field. */
-int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr)
-{
- struct sta_info *sta;
- u16 fc;
-
- spin_lock(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock(&local->ap->sta_table_lock);
-
- if (!sta)
- return -1;
-
- fc = le16_to_cpu(hdr->frame_control);
- hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM,
- fc & IEEE80211_FCTL_FTYPE,
- fc & IEEE80211_FCTL_STYPE);
-
- atomic_dec(&sta->users);
- return 0;
-}
-
-
-/* Called only as a tasklet (software IRQ). Called for each RX frame after
- * getting RX header and payload from hardware. */
-ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
- struct sk_buff *skb,
- struct hostap_80211_rx_status *rx_stats,
- int wds)
-{
- int ret;
- struct sta_info *sta;
- u16 fc, type, stype;
- struct ieee80211_hdr *hdr;
-
- if (local->ap == NULL)
- return AP_RX_CONTINUE;
-
- hdr = (struct ieee80211_hdr *) skb->data;
-
- fc = le16_to_cpu(hdr->frame_control);
- type = fc & IEEE80211_FCTL_FTYPE;
- stype = fc & IEEE80211_FCTL_STYPE;
-
- spin_lock(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock(&local->ap->sta_table_lock);
-
- if (sta && !(sta->flags & WLAN_STA_AUTHORIZED))
- ret = AP_RX_CONTINUE_NOT_AUTHORIZED;
- else
- ret = AP_RX_CONTINUE;
-
-
- if (fc & IEEE80211_FCTL_TODS) {
- if (!wds && (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
- if (local->hostapd) {
- prism2_rx_80211(local->apdev, skb, rx_stats,
- PRISM2_RX_NON_ASSOC);
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- } else {
- printk(KERN_DEBUG "%s: dropped received packet"
- " from non-associated STA %pM"
- " (type=0x%02x, subtype=0x%02x)\n",
- dev->name, hdr->addr2,
- type >> 2, stype >> 4);
- hostap_rx(dev, skb, rx_stats);
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
- }
- ret = AP_RX_EXIT;
- goto out;
- }
- } else if (fc & IEEE80211_FCTL_FROMDS) {
- if (!wds) {
- /* FromDS frame - not for us; probably
- * broadcast/multicast in another BSS - drop */
- if (ether_addr_equal(hdr->addr1, dev->dev_addr)) {
- printk(KERN_DEBUG "Odd.. FromDS packet "
- "received with own BSSID\n");
- hostap_dump_rx_80211(dev->name, skb, rx_stats);
- }
- ret = AP_RX_DROP;
- goto out;
- }
- } else if (stype == IEEE80211_STYPE_NULLFUNC && sta == NULL &&
- ether_addr_equal(hdr->addr1, dev->dev_addr)) {
-
- if (local->hostapd) {
- prism2_rx_80211(local->apdev, skb, rx_stats,
- PRISM2_RX_NON_ASSOC);
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- } else {
- /* At least Lucent f/w seems to send data::nullfunc
- * frames with no ToDS flag when the current AP returns
- * after being unavailable for some time. Speed up
- * re-association by informing the station about it not
- * being associated. */
- printk(KERN_DEBUG "%s: rejected received nullfunc frame"
- " without ToDS from not associated STA %pM\n",
- dev->name, hdr->addr2);
- hostap_rx(dev, skb, rx_stats);
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
- }
- ret = AP_RX_EXIT;
- goto out;
- } else if (stype == IEEE80211_STYPE_NULLFUNC) {
- /* At least Lucent cards seem to send periodic nullfunc
- * frames with ToDS. Let these through to update SQ
- * stats and PS state. Nullfunc frames do not contain
- * any data and they will be dropped below. */
- } else {
- /* If BSSID (Addr3) is foreign, this frame is a normal
- * broadcast frame from an IBSS network. Drop it silently.
- * If BSSID is own, report the dropping of this frame. */
- if (ether_addr_equal(hdr->addr3, dev->dev_addr)) {
- printk(KERN_DEBUG "%s: dropped received packet from %pM"
- " with no ToDS flag "
- "(type=0x%02x, subtype=0x%02x)\n", dev->name,
- hdr->addr2, type >> 2, stype >> 4);
- hostap_dump_rx_80211(dev->name, skb, rx_stats);
- }
- ret = AP_RX_DROP;
- goto out;
- }
-
- if (sta) {
- hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM,
- type, stype);
-
- sta->rx_packets++;
- sta->rx_bytes += skb->len;
- sta->last_rx = jiffies;
- }
-
- if (local->ap->nullfunc_ack && stype == IEEE80211_STYPE_NULLFUNC &&
- fc & IEEE80211_FCTL_TODS) {
- if (local->hostapd) {
- prism2_rx_80211(local->apdev, skb, rx_stats,
- PRISM2_RX_NULLFUNC_ACK);
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
- } else {
- /* some STA f/w's seem to require control::ACK frame
- * for data::nullfunc, but Prism2 f/w 0.8.0 (at least
- * from Compaq) does not send this.. Try to generate
- * ACK for these frames from the host driver to make
- * power saving work with, e.g., Lucent WaveLAN f/w */
- hostap_rx(dev, skb, rx_stats);
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
- }
- ret = AP_RX_EXIT;
- goto out;
- }
-
- out:
- if (sta)
- atomic_dec(&sta->users);
-
- return ret;
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-int hostap_handle_sta_crypto(local_info_t *local,
- struct ieee80211_hdr *hdr,
- struct lib80211_crypt_data **crypt,
- void **sta_ptr)
-{
- struct sta_info *sta;
-
- spin_lock(&local->ap->sta_table_lock);
- sta = ap_get_sta(local->ap, hdr->addr2);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock(&local->ap->sta_table_lock);
-
- if (!sta)
- return -1;
-
- if (sta->crypt) {
- *crypt = sta->crypt;
- *sta_ptr = sta;
- /* hostap_handle_sta_release() will be called to release STA
- * info */
- } else
- atomic_dec(&sta->users);
-
- return 0;
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr)
-{
- struct sta_info *sta;
- int ret = 0;
-
- spin_lock(&ap->sta_table_lock);
- sta = ap_get_sta(ap, sta_addr);
- if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap)
- ret = 1;
- spin_unlock(&ap->sta_table_lock);
-
- return ret;
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr)
-{
- struct sta_info *sta;
- int ret = 0;
-
- spin_lock(&ap->sta_table_lock);
- sta = ap_get_sta(ap, sta_addr);
- if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap &&
- ((sta->flags & WLAN_STA_AUTHORIZED) ||
- ap->local->ieee_802_1x == 0))
- ret = 1;
- spin_unlock(&ap->sta_table_lock);
-
- return ret;
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-int hostap_add_sta(struct ap_data *ap, u8 *sta_addr)
-{
- struct sta_info *sta;
- int ret = 1;
-
- if (!ap)
- return -1;
-
- spin_lock(&ap->sta_table_lock);
- sta = ap_get_sta(ap, sta_addr);
- if (sta)
- ret = 0;
- spin_unlock(&ap->sta_table_lock);
-
- if (ret == 1) {
- sta = ap_add_sta(ap, sta_addr);
- if (!sta)
- return -1;
- sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
- sta->ap = 1;
- memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
- /* No way of knowing which rates are supported since we did not
- * get supported rates element from beacon/assoc req. Assume
- * that remote end supports all 802.11b rates. */
- sta->supported_rates[0] = 0x82;
- sta->supported_rates[1] = 0x84;
- sta->supported_rates[2] = 0x0b;
- sta->supported_rates[3] = 0x16;
- sta->tx_supp_rates = WLAN_RATE_1M | WLAN_RATE_2M |
- WLAN_RATE_5M5 | WLAN_RATE_11M;
- sta->tx_rate = 110;
- sta->tx_max_rate = sta->tx_rate_idx = 3;
- }
-
- return ret;
-}
-
-
-/* Called only as a tasklet (software IRQ) */
-int hostap_update_rx_stats(struct ap_data *ap,
- struct ieee80211_hdr *hdr,
- struct hostap_80211_rx_status *rx_stats)
-{
- struct sta_info *sta;
-
- if (!ap)
- return -1;
-
- spin_lock(&ap->sta_table_lock);
- sta = ap_get_sta(ap, hdr->addr2);
- if (sta) {
- sta->last_rx_silence = rx_stats->noise;
- sta->last_rx_signal = rx_stats->signal;
- sta->last_rx_rate = rx_stats->rate;
- sta->last_rx_updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
- if (rx_stats->rate == 10)
- sta->rx_count[0]++;
- else if (rx_stats->rate == 20)
- sta->rx_count[1]++;
- else if (rx_stats->rate == 55)
- sta->rx_count[2]++;
- else if (rx_stats->rate == 110)
- sta->rx_count[3]++;
- }
- spin_unlock(&ap->sta_table_lock);
-
- return sta ? 0 : -1;
-}
-
-
-void hostap_update_rates(local_info_t *local)
-{
- struct sta_info *sta;
- struct ap_data *ap = local->ap;
-
- if (!ap)
- return;
-
- spin_lock_bh(&ap->sta_table_lock);
- list_for_each_entry(sta, &ap->sta_list, list) {
- prism2_check_tx_rates(sta);
- }
- spin_unlock_bh(&ap->sta_table_lock);
-}
-
-
-void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent,
- struct lib80211_crypt_data ***crypt)
-{
- struct sta_info *sta;
-
- spin_lock_bh(&ap->sta_table_lock);
- sta = ap_get_sta(ap, addr);
- if (sta)
- atomic_inc(&sta->users);
- spin_unlock_bh(&ap->sta_table_lock);
-
- if (!sta && permanent)
- sta = ap_add_sta(ap, addr);
-
- if (!sta)
- return NULL;
-
- if (permanent)
- sta->flags |= WLAN_STA_PERM;
-
- *crypt = &sta->crypt;
-
- return sta;
-}
-
-
-void hostap_add_wds_links(local_info_t *local)
-{
- struct ap_data *ap = local->ap;
- struct sta_info *sta;
-
- spin_lock_bh(&ap->sta_table_lock);
- list_for_each_entry(sta, &ap->sta_list, list) {
- if (sta->ap)
- hostap_wds_link_oper(local, sta->addr, WDS_ADD);
- }
- spin_unlock_bh(&ap->sta_table_lock);
-
- schedule_work(&local->ap->wds_oper_queue);
-}
-
-
-void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type)
-{
- struct wds_oper_data *entry;
-
- entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
- if (!entry)
- return;
- memcpy(entry->addr, addr, ETH_ALEN);
- entry->type = type;
- spin_lock_bh(&local->lock);
- entry->next = local->ap->wds_oper_entries;
- local->ap->wds_oper_entries = entry;
- spin_unlock_bh(&local->lock);
-
- schedule_work(&local->ap->wds_oper_queue);
-}
-
-
-EXPORT_SYMBOL(hostap_init_data);
-EXPORT_SYMBOL(hostap_init_ap_proc);
-EXPORT_SYMBOL(hostap_free_data);
-EXPORT_SYMBOL(hostap_check_sta_fw_version);
-EXPORT_SYMBOL(hostap_handle_sta_tx_exc);
-#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
-#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */