mirror of https://gitee.com/openkylin/linux.git
3277 lines
85 KiB
C
3277 lines
85 KiB
C
/*
|
|
* 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/delay.h>
|
|
#include <linux/random.h>
|
|
#include <linux/if_arp.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/export.h>
|
|
#include <linux/moduleparam.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_read(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
char *p = page;
|
|
struct ap_data *ap = (struct ap_data *) data;
|
|
|
|
if (off != 0) {
|
|
*eof = 1;
|
|
return 0;
|
|
}
|
|
|
|
p += sprintf(p, "BridgedUnicastFrames=%u\n", ap->bridged_unicast);
|
|
p += sprintf(p, "BridgedMulticastFrames=%u\n", ap->bridged_multicast);
|
|
p += sprintf(p, "max_inactivity=%u\n", ap->max_inactivity / HZ);
|
|
p += sprintf(p, "bridge_packets=%u\n", ap->bridge_packets);
|
|
p += sprintf(p, "nullfunc_ack=%u\n", ap->nullfunc_ack);
|
|
p += sprintf(p, "autom_ap_wds=%u\n", ap->autom_ap_wds);
|
|
p += sprintf(p, "auth_algs=%u\n", ap->local->auth_algs);
|
|
p += sprintf(p, "tx_drop_nonassoc=%u\n", ap->tx_drop_nonassoc);
|
|
|
|
return (p - page);
|
|
}
|
|
#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 (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) {
|
|
ap->sta_hash[STA_HASH(sta->addr)] = s->hnext;
|
|
return;
|
|
}
|
|
|
|
while (s->hnext != NULL && memcmp(s->hnext->addr, sta->addr, ETH_ALEN)
|
|
!= 0)
|
|
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 && sta->u.sta.challenge)
|
|
kfree(sta->u.sta.challenge);
|
|
del_timer(&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);
|
|
memset(addr, 0xff, ETH_ALEN);
|
|
|
|
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_read(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
char *p = page;
|
|
struct ap_data *ap = (struct ap_data *) data;
|
|
char *policy_txt;
|
|
struct mac_entry *entry;
|
|
|
|
if (off != 0) {
|
|
*eof = 1;
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
}
|
|
p += sprintf(p, "MAC policy: %s\n", policy_txt);
|
|
p += sprintf(p, "MAC entries: %u\n", ap->mac_restrictions.entries);
|
|
p += sprintf(p, "MAC list:\n");
|
|
spin_lock_bh(&ap->mac_restrictions.lock);
|
|
list_for_each_entry(entry, &ap->mac_restrictions.mac_list, list) {
|
|
if (p - page > PAGE_SIZE - 80) {
|
|
p += sprintf(p, "All entries did not fit one page.\n");
|
|
break;
|
|
}
|
|
|
|
p += sprintf(p, "%pM\n", entry->addr);
|
|
}
|
|
spin_unlock_bh(&ap->mac_restrictions.lock);
|
|
|
|
return (p - page);
|
|
}
|
|
|
|
|
|
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 -1;
|
|
|
|
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 (memcmp(entry->addr, mac, ETH_ALEN) == 0) {
|
|
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 (memcmp(entry->addr, mac, ETH_ALEN) == 0) {
|
|
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
|
|
|
|
#define PROC_LIMIT (PAGE_SIZE - 80)
|
|
|
|
static int prism2_ap_proc_read(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
char *p = page;
|
|
struct ap_data *ap = (struct ap_data *) data;
|
|
struct sta_info *sta;
|
|
int i;
|
|
|
|
if (off > PROC_LIMIT) {
|
|
*eof = 1;
|
|
return 0;
|
|
}
|
|
|
|
p += sprintf(p, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n");
|
|
spin_lock_bh(&ap->sta_table_lock);
|
|
list_for_each_entry(sta, &ap->sta_list, list) {
|
|
if (!sta->ap)
|
|
continue;
|
|
|
|
p += sprintf(p, "%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++)
|
|
p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 &&
|
|
sta->u.ap.ssid[i] < 127) ?
|
|
"%c" : "<%02x>"),
|
|
sta->u.ap.ssid[i]);
|
|
p += sprintf(p, "'");
|
|
if (sta->capability & WLAN_CAPABILITY_ESS)
|
|
p += sprintf(p, " [ESS]");
|
|
if (sta->capability & WLAN_CAPABILITY_IBSS)
|
|
p += sprintf(p, " [IBSS]");
|
|
if (sta->capability & WLAN_CAPABILITY_PRIVACY)
|
|
p += sprintf(p, " [WEP]");
|
|
p += sprintf(p, "\n");
|
|
|
|
if ((p - page) > PROC_LIMIT) {
|
|
printk(KERN_DEBUG "hostap: ap proc did not fit\n");
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_bh(&ap->sta_table_lock);
|
|
|
|
if ((p - page) <= off) {
|
|
*eof = 1;
|
|
return 0;
|
|
}
|
|
|
|
*start = page + off;
|
|
|
|
return (p - page - off);
|
|
}
|
|
#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
|
|
create_proc_read_entry("ap_debug", 0, ap->proc,
|
|
ap_debug_proc_read, ap);
|
|
#endif /* PRISM2_NO_PROCFS_DEBUG */
|
|
|
|
#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
|
|
create_proc_read_entry("ap_control", 0, ap->proc,
|
|
ap_control_proc_read, ap);
|
|
create_proc_read_entry("ap", 0, ap->proc,
|
|
prism2_ap_proc_read, 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_sync(&ap->add_sta_proc_queue);
|
|
|
|
#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
|
|
flush_work_sync(&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 && memcmp(s->addr, sta, ETH_ALEN) != 0)
|
|
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 */
|
|
memset(hdr->addr2, 0, ETH_ALEN);
|
|
memset(hdr->addr3, 0, ETH_ALEN);
|
|
} 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_read(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
char *p = page;
|
|
struct sta_info *sta = (struct sta_info *) data;
|
|
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.. */
|
|
|
|
if (off != 0) {
|
|
*eof = 1;
|
|
return 0;
|
|
}
|
|
|
|
p += sprintf(p, "%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)
|
|
p += sprintf(p, "%d%sMbps ",
|
|
(sta->supported_rates[i] & 0x7f) / 2,
|
|
sta->supported_rates[i] & 1 ? ".5" : "");
|
|
p += sprintf(p, "\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)
|
|
p = sta->crypt->ops->print_stats(p, sta->crypt->priv);
|
|
#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
|
|
if (sta->ap) {
|
|
if (sta->u.ap.channel >= 0)
|
|
p += sprintf(p, "channel=%d\n", sta->u.ap.channel);
|
|
p += sprintf(p, "ssid=");
|
|
for (i = 0; i < sta->u.ap.ssid_len; i++)
|
|
p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 &&
|
|
sta->u.ap.ssid[i] < 127) ?
|
|
"%c" : "<%02x>"),
|
|
sta->u.ap.ssid[i]);
|
|
p += sprintf(p, "\n");
|
|
}
|
|
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
|
|
|
|
return (p - page);
|
|
}
|
|
|
|
|
|
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 = create_proc_read_entry(
|
|
name, 0, ap->proc,
|
|
prism2_sta_proc_read, 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 (memcmp(dev->dev_addr, hdr->addr2, ETH_ALEN) == 0 ||
|
|
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
|
|
memset(prev_ap, 0, ETH_ALEN);
|
|
|
|
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 (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
|
|
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 (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
|
|
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 (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
|
|
PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%pM"
|
|
" not own MAC\n", hdr->addr1);
|
|
goto done;
|
|
}
|
|
|
|
if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN)) {
|
|
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 (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
|
|
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 &&
|
|
memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
|
|
|
|
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 (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
|
|
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 */
|