/*
* Host AP (software wireless LAN access point) driver for
* Intersil Prism2/2.5/3 - hostap.o module, common routines
*
* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
* <jkmaline@cc.hut.fi>
* Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See README and COPYING for
* more details.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/if_arp.h>
#include <linux/delay.h>
#include <linux/random.h>
#include <linux/workqueue.h>
#include <linux/kmod.h>
#include <linux/rtnetlink.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <net/ieee80211.h>
#include <net/ieee80211_crypt.h>
#include <asm/uaccess.h>
#include "hostap_wlan.h"
#include "hostap_80211.h"
#include "hostap_ap.h"
#include "hostap.h"
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Host AP common routines");
MODULE_LICENSE("GPL");
MODULE_VERSION(PRISM2_VERSION);
#define TX_TIMEOUT (2 * HZ)
#define PRISM2_MAX_FRAME_SIZE 2304
#define PRISM2_MIN_MTU 256
/* FIX: */
#define PRISM2_MAX_MTU (PRISM2_MAX_FRAME_SIZE - (6 /* LLC */ + 8 /* WEP */))
/* hostap.c */
static int prism2_wds_add(local_info_t *local, u8 *remote_addr,
int rtnl_locked);
static int prism2_wds_del(local_info_t *local, u8 *remote_addr,
int rtnl_locked, int do_not_remove);
/* hostap_ap.c */
static int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[],
struct iw_quality qual[], int buf_size,
int aplist);
static int prism2_ap_translate_scan(struct net_device *dev, char *buffer);
static int prism2_hostapd(struct ap_data *ap,
struct prism2_hostapd_param *param);
static void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent,
struct ieee80211_crypt_data ***crypt);
static void ap_control_kickall(struct ap_data *ap);
#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
static int ap_control_add_mac(struct mac_restrictions *mac_restrictions,
u8 *mac);
static int ap_control_del_mac(struct mac_restrictions *mac_restrictions,
u8 *mac);
static void ap_control_flush_macs(struct mac_restrictions *mac_restrictions);
static int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev,
u8 *mac);
#endif /* !PRISM2_NO_KERNEL_IEEE80211_MGMT */
static const long freq_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2447, 2452, 2457, 2462, 2467, 2472, 2484 };
#define FREQ_COUNT (sizeof(freq_list) / sizeof(freq_list[0]))
/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
static unsigned char rfc1042_header[] =
{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
static unsigned char bridge_tunnel_header[] =
{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
/* No encapsulation header if EtherType < 0x600 (=length) */
/* FIX: these could be compiled separately and linked together to hostap.o */
#include "hostap_ap.c"
#include "hostap_info.c"
#include "hostap_ioctl.c"
#include "hostap_proc.c"
#include "hostap_80211_rx.c"
#include "hostap_80211_tx.c"
struct net_device * hostap_add_interface(struct local_info *local,
int type, int rtnl_locked,
const char *prefix,
const char *name)
{
struct net_device *dev, *mdev;
struct hostap_interface *iface;
int ret;
dev = alloc_etherdev(sizeof(struct hostap_interface));
if (dev == NULL)
return NULL;
iface = netdev_priv(dev);
iface->dev = dev;
iface->local = local;
iface->type = type;
list_add(&iface->list, &local->hostap_interfaces);
mdev = local->dev;
memcpy(dev->dev_addr, mdev->dev_addr, ETH_ALEN);
dev->base_addr = mdev->base_addr;
dev->irq = mdev->irq;
dev->mem_start = mdev->mem_start;
dev->mem_end = mdev->mem_end;
hostap_setup_dev(dev, local, 0);
dev->destructor = free_netdev;
sprintf(dev->name, "%s%s", prefix, name);
if (!rtnl_locked)
rtnl_lock();
ret = 0;
if (strchr(dev->name, '%'))
ret = dev_alloc_name(dev, dev->name);
SET_NETDEV_DEV(dev, mdev->class_dev.dev);
if (ret >= 0)
ret = register_netdevice(dev);
if (!rtnl_locked)
rtnl_unlock();
if (ret < 0) {
printk(KERN_WARNING "%s: failed to add new netdevice!\n",
dev->name);
free_netdev(dev);
return NULL;
}
printk(KERN_DEBUG "%s: registered netdevice %s\n",
mdev->name, dev->name);
return dev;
}
void hostap_remove_interface(struct net_device *dev, int rtnl_locked,
int remove_from_list)
{
struct hostap_interface *iface;
if (!dev)
return;
iface = netdev_priv(dev);
if (remove_from_list) {
list_del(&iface->list);
}
if (dev == iface->local->ddev)
iface->local->ddev = NULL;
else if (dev == iface->local->apdev)
iface->local->apdev = NULL;
else if (dev == iface->local->stadev)
iface->local->stadev = NULL;
if (rtnl_locked)
unregister_netdevice(dev);
else
unregister_netdev(dev);
/* dev->destructor = free_netdev() will free the device data, including
* private data, when removing the device */
}
static inline int prism2_wds_special_addr(u8 *addr)
{
if (addr[0] || addr[1] || addr[2] || addr[3] || addr[4] || addr[5])
return 0;
return 1;
}
static int prism2_wds_add(local_info_t *local, u8 *remote_addr,
int rtnl_locked)
{
struct net_device *dev;
struct list_head *ptr;
struct hostap_interface *iface, *empty, *match;
empty = match = NULL;
read_lock_bh(&local->iface_lock);
list_for_each(ptr, &local->hostap_interfaces) {
iface = list_entry(ptr, struct hostap_interface, list);
if (iface->type != HOSTAP_INTERFACE_WDS)
continue;
if (prism2_wds_special_addr(iface->u.wds.remote_addr))
empty = iface;
else if (memcmp(iface->u.wds.remote_addr, remote_addr,
ETH_ALEN) == 0) {
match = iface;
break;
}
}
if (!match && empty && !prism2_wds_special_addr(remote_addr)) {
/* take pre-allocated entry into use */
memcpy(empty->u.wds.remote_addr, remote_addr, ETH_ALEN);
read_unlock_bh(&local->iface_lock);
printk(KERN_DEBUG "%s: using pre-allocated WDS netdevice %s\n",
local->dev->name, empty->dev->name);
return 0;
}
read_unlock_bh(&local->iface_lock);
if (!prism2_wds_special_addr(remote_addr)) {
if (match)
return -EEXIST;
hostap_add_sta(local->ap, remote_addr);
}
if (local->wds_connections >= local->wds_max_connections)
return -ENOBUFS;
/* verify that there is room for wds# postfix in the interface name */
if (strlen(local->dev->name) > IFNAMSIZ - 5) {
printk(KERN_DEBUG "'%s' too long base device name\n",
local->dev->name);
return -EINVAL;
}
dev = hostap_add_interface(local, HOSTAP_INTERFACE_WDS, rtnl_locked,
local->ddev->name, "wds%d");
if (dev == NULL)
return -ENOMEM;
iface = netdev_priv(dev);
memcpy(iface->u.wds.remote_addr, remote_addr, ETH_ALEN);
local->wds_connections++;
return 0;
}
static int prism2_wds_del(local_info_t *local, u8 *remote_addr,
int rtnl_locked, int do_not_remove)
{
unsigned long flags;
struct list_head *ptr;
struct hostap_interface *iface, *selected = NULL;
write_lock_irqsave(&local->iface_lock, flags);
list_for_each(ptr, &local->hostap_interfaces) {
iface = list_entry(ptr, struct hostap_interface, list);
if (iface->type != HOSTAP_INTERFACE_WDS)
continue;
if (memcmp(iface->u.wds.remote_addr, remote_addr,
ETH_ALEN) == 0) {
selected = iface;
break;
}
}
if (selected && !do_not_remove)
list_del(&selected->list);
write_unlock_irqrestore(&local->iface_lock, flags);
if (selected) {
if (do_not_remove)
memset(selected->u.wds.remote_addr, 0, ETH_ALEN);
else {
hostap_remove_interface(selected->dev, rtnl_locked, 0);
local->wds_connections--;
}
}
return selected ? 0 : -ENODEV;
}
u16 hostap_tx_callback_register(local_info_t *local,
void (*func)(struct sk_buff *, int ok, void *),
void *data)
{
unsigned long flags;
struct hostap_tx_callback_info *entry;
entry = (struct hostap_tx_callback_info *) kmalloc(sizeof(*entry),
GFP_ATOMIC);
if (entry == NULL)
return 0;
entry->func = func;
entry->data = data;
spin_lock_irqsave(&local->lock, flags);
entry->idx = local->tx_callback ? local->tx_callback->idx + 1 : 1;
entry->next = local->tx_callback;
local->tx_callback = entry;
spin_unlock_irqrestore(&local->lock, flags);
return entry->idx;
}
int hostap_tx_callback_unregister(local_info_t *local, u16 idx)
{
unsigned long flags;
struct hostap_tx_callback_info *cb, *prev = NULL;
spin_lock_irqsave(&local->lock, flags);
cb = local->tx_callback;
while (cb != NULL && cb->idx != idx) {
prev = cb;
cb = cb->next;
}
if (cb) {
if (prev == NULL)
local->tx_callback = cb->next;
else
prev->next = cb->next;
kfree(cb);
}
spin_unlock_irqrestore(&local->lock, flags);
return cb ? 0 : -1;
}
/* val is in host byte order */
int hostap_set_word(struct net_device *dev, int rid, u16 val)
{
struct hostap_interface *iface;
u16 tmp = cpu_to_le16(val);
iface = netdev_priv(dev);
return iface->local->func->set_rid(dev, rid, &tmp, 2);
}
int hostap_set_string(struct net_device *dev, int rid, const char *val)
{
struct hostap_interface *iface;
char buf[MAX_SSID_LEN + 2];
int len;
iface = netdev_priv(dev);
len = strlen(val);
if (len > MAX_SSID_LEN)
return -1;
memset(buf, 0, sizeof(buf));
buf[0] = len; /* little endian 16 bit word */
memcpy(buf + 2, val, len);
return iface->local->func->set_rid(dev, rid, &buf, MAX_SSID_LEN + 2);
}
u16 hostap_get_porttype(local_info_t *local)
{
if (local->iw_mode == IW_MODE_ADHOC && local->pseudo_adhoc)
return HFA384X_PORTTYPE_PSEUDO_IBSS;
if (local->iw_mode == IW_MODE_ADHOC)
return HFA384X_PORTTYPE_IBSS;
if (local->iw_mode == IW_MODE_INFRA)
return HFA384X_PORTTYPE_BSS;
if (local->iw_mode == IW_MODE_REPEAT)
return HFA384X_PORTTYPE_WDS;
if (local->iw_mode == IW_MODE_MONITOR)
return HFA384X_PORTTYPE_PSEUDO_IBSS;
return HFA384X_PORTTYPE_HOSTAP;
}
int hostap_set_encryption(local_info_t *local)
{
u16 val, old_val;
int i, keylen, len, idx;
char keybuf[WEP_KEY_LEN + 1];
enum { NONE, WEP, OTHER } encrypt_type;
idx = local->tx_keyidx;
if (local->crypt[idx] == NULL || local->crypt[idx]->ops == NULL)
encrypt_type = NONE;
else if (strcmp(local->crypt[idx]->ops->name, "WEP") == 0)
encrypt_type = WEP;
else
encrypt_type = OTHER;
if (local->func->get_rid(local->dev, HFA384X_RID_CNFWEPFLAGS, &val, 2,
1) < 0) {
printk(KERN_DEBUG "Could not read current WEP flags.\n");
goto fail;
}
le16_to_cpus(&val);
old_val = val;
if (encrypt_type != NONE || local->privacy_invoked)
val |= HFA384X_WEPFLAGS_PRIVACYINVOKED;
else
val &= ~HFA384X_WEPFLAGS_PRIVACYINVOKED;
if (local->open_wep || encrypt_type == NONE ||
((local->ieee_802_1x || local->wpa) && local->host_decrypt))
val &= ~HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED;
else
val |= HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED;
if ((encrypt_type != NONE || local->privacy_invoked) &&
(encrypt_type == OTHER || local->host_encrypt))
val |= HFA384X_WEPFLAGS_HOSTENCRYPT;
else
val &= ~HFA384X_WEPFLAGS_HOSTENCRYPT;
if ((encrypt_type != NONE || local->privacy_invoked) &&
(encrypt_type == OTHER || local->host_decrypt))
val |= HFA384X_WEPFLAGS_HOSTDECRYPT;
else
val &= ~HFA384X_WEPFLAGS_HOSTDECRYPT;
if (val != old_val &&
hostap_set_word(local->dev, HFA384X_RID_CNFWEPFLAGS, val)) {
printk(KERN_DEBUG "Could not write new WEP flags (0x%x)\n",
val);
goto fail;
}
if (encrypt_type != WEP)
return 0;
/* 104-bit support seems to require that all the keys are set to the
* same keylen */
keylen = 6; /* first 5 octets */
len = local->crypt[idx]->ops->get_key(keybuf, sizeof(keybuf),
NULL, local->crypt[idx]->priv);
if (idx >= 0 && idx < WEP_KEYS && len > 5)
keylen = WEP_KEY_LEN + 1; /* first 13 octets */
for (i = 0; i < WEP_KEYS; i++) {
memset(keybuf, 0, sizeof(keybuf));
if (local->crypt[i]) {
(void) local->crypt[i]->ops->get_key(
keybuf, sizeof(keybuf),
NULL, local->crypt[i]->priv);
}
if (local->func->set_rid(local->dev,
HFA384X_RID_CNFDEFAULTKEY0 + i,
keybuf, keylen)) {
printk(KERN_DEBUG "Could not set key %d (len=%d)\n",
i, keylen);
goto fail;
}
}
if (hostap_set_word(local->dev, HFA384X_RID_CNFWEPDEFAULTKEYID, idx)) {
printk(KERN_DEBUG "Could not set default keyid %d\n", idx);
goto fail;
}
return 0;
fail:
printk(KERN_DEBUG "%s: encryption setup failed\n", local->dev->name);
return -1;
}
int hostap_set_antsel(local_info_t *local)
{
u16 val;
int ret = 0;
if (local->antsel_tx != HOSTAP_ANTSEL_DO_NOT_TOUCH &&
local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF,
HFA386X_CR_TX_CONFIGURE,
NULL, &val) == 0) {
val &= ~(BIT(2) | BIT(1));
switch (local->antsel_tx) {
case HOSTAP_ANTSEL_DIVERSITY:
val |= BIT(1);
break;
case HOSTAP_ANTSEL_LOW:
break;
case HOSTAP_ANTSEL_HIGH:
val |= BIT(2);
break;
}
if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF,
HFA386X_CR_TX_CONFIGURE, &val, NULL)) {
printk(KERN_INFO "%s: setting TX AntSel failed\n",
local->dev->name);
ret = -1;
}
}
if (local->antsel_rx != HOSTAP_ANTSEL_DO_NOT_TOUCH &&
local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF,
HFA386X_CR_RX_CONFIGURE,
NULL, &val) == 0) {
val &= ~(BIT(1) | BIT(0));
switch (local->antsel_rx) {
case HOSTAP_ANTSEL_DIVERSITY:
break;
case HOSTAP_ANTSEL_LOW:
val |= BIT(0);
break;
case HOSTAP_ANTSEL_HIGH:
val |= BIT(0) | BIT(1);
break;
}
if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF,
HFA386X_CR_RX_CONFIGURE, &val, NULL)) {
printk(KERN_INFO "%s: setting RX AntSel failed\n",
local->dev->name);
ret = -1;
}
}
return ret;
}
int hostap_set_roaming(local_info_t *local)
{
u16 val;
switch (local->host_roaming) {
case 1:
val = HFA384X_ROAMING_HOST;
break;
case 2:
val = HFA384X_ROAMING_DISABLED;
break;
case 0:
default:
val = HFA384X_ROAMING_FIRMWARE;
break;
}
return hostap_set_word(local->dev, HFA384X_RID_CNFROAMINGMODE, val);
}
int hostap_set_auth_algs(local_info_t *local)
{
int val = local->auth_algs;
/* At least STA f/w v0.6.2 seems to have issues with cnfAuthentication
* set to include both Open and Shared Key flags. It tries to use
* Shared Key authentication in that case even if WEP keys are not
* configured.. STA f/w v0.7.6 is able to handle such configuration,
* but it is unknown when this was fixed between 0.6.2 .. 0.7.6. */
if (local->sta_fw_ver < PRISM2_FW_VER(0,7,0) &&
val != PRISM2_AUTH_OPEN && val != PRISM2_AUTH_SHARED_KEY)
val = PRISM2_AUTH_OPEN;
if (hostap_set_word(local->dev, HFA384X_RID_CNFAUTHENTICATION, val)) {
printk(KERN_INFO "%s: cnfAuthentication setting to 0x%x "
"failed\n", local->dev->name, local->auth_algs);
return -EINVAL;
}
return 0;
}
void hostap_dump_rx_header(const char *name, const struct hfa384x_rx_frame *rx)
{
u16 status, fc;
status = __le16_to_cpu(rx->status);
printk(KERN_DEBUG "%s: RX status=0x%04x (port=%d, type=%d, "
"fcserr=%d) silence=%d signal=%d rate=%d rxflow=%d; "
"jiffies=%ld\n",
name, status, (status >> 8) & 0x07, status >> 13, status & 1,
rx->silence, rx->signal, rx->rate, rx->rxflow, jiffies);
fc = __le16_to_cpu(rx->frame_control);
printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x "
"data_len=%d%s%s\n",
fc, WLAN_FC_GET_TYPE(fc) >> 2, WLAN_FC_GET_STYPE(fc) >> 4,
__le16_to_cpu(rx->duration_id), __le16_to_cpu(rx->seq_ctrl),
__le16_to_cpu(rx->data_len),
fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
printk(KERN_DEBUG " A1=" MACSTR " A2=" MACSTR " A3=" MACSTR " A4="
MACSTR "\n",
MAC2STR(rx->addr1), MAC2STR(rx->addr2), MAC2STR(rx->addr3),
MAC2STR(rx->addr4));
printk(KERN_DEBUG " dst=" MACSTR " src=" MACSTR " len=%d\n",
MAC2STR(rx->dst_addr), MAC2STR(rx->src_addr),
__be16_to_cpu(rx->len));
}
void hostap_dump_tx_header(const char *name, const struct hfa384x_tx_frame *tx)
{
u16 fc;
printk(KERN_DEBUG "%s: TX status=0x%04x retry_count=%d tx_rate=%d "
"tx_control=0x%04x; jiffies=%ld\n",
name, __le16_to_cpu(tx->status), tx->retry_count, tx->tx_rate,
__le16_to_cpu(tx->tx_control), jiffies);
fc = __le16_to_cpu(tx->frame_control);
printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x "
"data_len=%d%s%s\n",
fc, WLAN_FC_GET_TYPE(fc) >> 2, WLAN_FC_GET_STYPE(fc) >> 4,
__le16_to_cpu(tx->duration_id), __le16_to_cpu(tx->seq_ctrl),
__le16_to_cpu(tx->data_len),
fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
printk(KERN_DEBUG " A1=" MACSTR " A2=" MACSTR " A3=" MACSTR " A4="
MACSTR "\n",
MAC2STR(tx->addr1), MAC2STR(tx->addr2), MAC2STR(tx->addr3),
MAC2STR(tx->addr4));
printk(KERN_DEBUG " dst=" MACSTR " src=" MACSTR " len=%d\n",
MAC2STR(tx->dst_addr), MAC2STR(tx->src_addr),
__be16_to_cpu(tx->len));
}
int hostap_80211_header_parse(struct sk_buff *skb, unsigned char *haddr)
{
memcpy(haddr, skb->mac.raw + 10, ETH_ALEN); /* addr2 */
return ETH_ALEN;
}
int hostap_80211_prism_header_parse(struct sk_buff *skb, unsigned char *haddr)
{
if (*(u32 *)skb->mac.raw == LWNG_CAP_DID_BASE) {
memcpy(haddr, skb->mac.raw +
sizeof(struct linux_wlan_ng_prism_hdr) + 10,
ETH_ALEN); /* addr2 */
} else { /* (*(u32 *)skb->mac.raw == htonl(LWNG_CAPHDR_VERSION)) */
memcpy(haddr, skb->mac.raw +
sizeof(struct linux_wlan_ng_cap_hdr) + 10,
ETH_ALEN); /* addr2 */
}
return ETH_ALEN;
}
int hostap_80211_get_hdrlen(u16 fc)
{
int hdrlen = 24;
switch (WLAN_FC_GET_TYPE(fc)) {
case IEEE80211_FTYPE_DATA:
if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
hdrlen = 30; /* Addr4 */
break;
case IEEE80211_FTYPE_CTL:
switch (WLAN_FC_GET_STYPE(fc)) {
case IEEE80211_STYPE_CTS:
case IEEE80211_STYPE_ACK:
hdrlen = 10;
break;
default:
hdrlen = 16;
break;
}
break;
}
return hdrlen;
}
struct net_device_stats *hostap_get_stats(struct net_device *dev)
{
struct hostap_interface *iface;
iface = netdev_priv(dev);
return &iface->stats;
}
static int prism2_close(struct net_device *dev)
{
struct hostap_interface *iface;
local_info_t *local;
PDEBUG(DEBUG_FLOW, "%s: prism2_close\n", dev->name);
iface = netdev_priv(dev);
local = iface->local;
if (dev == local->ddev) {
prism2_sta_deauth(local, WLAN_REASON_DEAUTH_LEAVING);
}
#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
if (!local->hostapd && dev == local->dev &&
(!local->func->card_present || local->func->card_present(local)) &&
local->hw_ready && local->ap && local->iw_mode == IW_MODE_MASTER)
hostap_deauth_all_stas(dev, local->ap, 1);
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
if (dev == local->dev) {
local->func->hw_shutdown(dev, HOSTAP_HW_ENABLE_CMDCOMPL);
}
if (netif_running(dev)) {
netif_stop_queue(dev);
netif_device_detach(dev);
}
flush_scheduled_work();
module_put(local->hw_module);
local->num_dev_open--;
if (dev != local->dev && local->dev->flags & IFF_UP &&
local->master_dev_auto_open && local->num_dev_open == 1) {
/* Close master radio interface automatically if it was also
* opened automatically and we are now closing the last
* remaining non-master device. */
dev_close(local->dev);
}
return 0;
}
static int prism2_open(struct net_device *dev)
{
struct hostap_interface *iface;
local_info_t *local;
PDEBUG(DEBUG_FLOW, "%s: prism2_open\n", dev->name);
iface = netdev_priv(dev);
local = iface->local;
if (local->no_pri) {
printk(KERN_DEBUG "%s: could not set interface UP - no PRI "
"f/w\n", dev->name);
return 1;
}
if ((local->func->card_present && !local->func->card_present(local)) ||
local->hw_downloading)
return -ENODEV;
if (!try_module_get(local->hw_module))
return -ENODEV;
local->num_dev_open++;
if (!local->dev_enabled && local->func->hw_enable(dev, 1)) {
printk(KERN_WARNING "%s: could not enable MAC port\n",
dev->name);
prism2_close(dev);
return 1;
}
if (!local->dev_enabled)
prism2_callback(local, PRISM2_CALLBACK_ENABLE);
local->dev_enabled = 1;
if (dev != local->dev && !(local->dev->flags & IFF_UP)) {
/* Master radio interface is needed for all operation, so open
* it automatically when any virtual net_device is opened. */
local->master_dev_auto_open = 1;
dev_open(local->dev);
}
netif_device_attach(dev);
netif_start_queue(dev);
return 0;
}
static int prism2_set_mac_address(struct net_device *dev, void *p)
{
struct hostap_interface *iface;
local_info_t *local;
struct list_head *ptr;
struct sockaddr *addr = p;
iface = netdev_priv(dev);
local = iface->local;
if (local->func->set_rid(dev, HFA384X_RID_CNFOWNMACADDR, addr->sa_data,
ETH_ALEN) < 0 || local->func->reset_port(dev))
return -EINVAL;
read_lock_bh(&local->iface_lock);
list_for_each(ptr, &local->hostap_interfaces) {
iface = list_entry(ptr, struct hostap_interface, list);
memcpy(iface->dev->dev_addr, addr->sa_data, ETH_ALEN);
}
memcpy(local->dev->dev_addr, addr->sa_data, ETH_ALEN);
read_unlock_bh(&local->iface_lock);
return 0;
}
/* TODO: to be further implemented as soon as Prism2 fully supports
* GroupAddresses and correct documentation is available */
void hostap_set_multicast_list_queue(void *data)
{
struct net_device *dev = (struct net_device *) data;
struct hostap_interface *iface;
local_info_t *local;
iface = netdev_priv(dev);
local = iface->local;
if (hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
local->is_promisc)) {
printk(KERN_INFO "%s: %sabling promiscuous mode failed\n",
dev->name, local->is_promisc ? "en" : "dis");
}
}
static void hostap_set_multicast_list(struct net_device *dev)
{
#if 0
/* FIX: promiscuous mode seems to be causing a lot of problems with
* some station firmware versions (FCSErr frames, invalid MACPort, etc.
* corrupted incoming frames). This code is now commented out while the
* problems are investigated. */
struct hostap_interface *iface;
local_info_t *local;
iface = netdev_priv(dev);
local = iface->local;
if ((dev->flags & IFF_ALLMULTI) || (dev->flags & IFF_PROMISC)) {
local->is_promisc = 1;
} else {
local->is_promisc = 0;
}
schedule_work(&local->set_multicast_list_queue);
#endif
}
static int prism2_change_mtu(struct net_device *dev, int new_mtu)
{
if (new_mtu < PRISM2_MIN_MTU || new_mtu > PRISM2_MAX_MTU)
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
static void prism2_tx_timeout(struct net_device *dev)
{
struct hostap_interface *iface;
local_info_t *local;
struct hfa384x_regs regs;
iface = netdev_priv(dev);
local = iface->local;
printk(KERN_WARNING "%s Tx timed out! Resetting card\n", dev->name);
netif_stop_queue(local->dev);
local->func->read_regs(dev, ®s);
printk(KERN_DEBUG "%s: CMD=%04x EVSTAT=%04x "
"OFFSET0=%04x OFFSET1=%04x SWSUPPORT0=%04x\n",
dev->name, regs.cmd, regs.evstat, regs.offset0, regs.offset1,
regs.swsupport0);
local->func->schedule_reset(local);
}
void hostap_setup_dev(struct net_device *dev, local_info_t *local,
int main_dev)
{
struct hostap_interface *iface;
iface = netdev_priv(dev);
ether_setup(dev);
/* kernel callbacks */
dev->get_stats = hostap_get_stats;
if (iface) {
/* Currently, we point to the proper spy_data only on
* the main_dev. This could be fixed. Jean II */
iface->wireless_data.spy_data = &iface->spy_data;
dev->wireless_data = &iface->wireless_data;
}
dev->wireless_handlers =
(struct iw_handler_def *) &hostap_iw_handler_def;
dev->do_ioctl = hostap_ioctl;
dev->open = prism2_open;
dev->stop = prism2_close;
dev->hard_start_xmit = hostap_data_start_xmit;
dev->set_mac_address = prism2_set_mac_address;
dev->set_multicast_list = hostap_set_multicast_list;
dev->change_mtu = prism2_change_mtu;
dev->tx_timeout = prism2_tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
dev->mtu = local->mtu;
if (!main_dev) {
/* use main radio device queue */
dev->tx_queue_len = 0;
}
SET_ETHTOOL_OPS(dev, &prism2_ethtool_ops);
netif_stop_queue(dev);
}
static int hostap_enable_hostapd(local_info_t *local, int rtnl_locked)
{
struct net_device *dev = local->dev;
if (local->apdev)
return -EEXIST;
printk(KERN_DEBUG "%s: enabling hostapd mode\n", dev->name);
local->apdev = hostap_add_interface(local, HOSTAP_INTERFACE_AP,
rtnl_locked, local->ddev->name,
"ap");
if (local->apdev == NULL)
return -ENOMEM;
local->apdev->hard_start_xmit = hostap_mgmt_start_xmit;
local->apdev->type = ARPHRD_IEEE80211;
local->apdev->hard_header_parse = hostap_80211_header_parse;
return 0;
}
static int hostap_disable_hostapd(local_info_t *local, int rtnl_locked)
{
struct net_device *dev = local->dev;
printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name);
hostap_remove_interface(local->apdev, rtnl_locked, 1);
local->apdev = NULL;
return 0;
}
static int hostap_enable_hostapd_sta(local_info_t *local, int rtnl_locked)
{
struct net_device *dev = local->dev;
if (local->stadev)
return -EEXIST;
printk(KERN_DEBUG "%s: enabling hostapd STA mode\n", dev->name);
local->stadev = hostap_add_interface(local, HOSTAP_INTERFACE_STA,
rtnl_locked, local->ddev->name,
"sta");
if (local->stadev == NULL)
return -ENOMEM;
return 0;
}
static int hostap_disable_hostapd_sta(local_info_t *local, int rtnl_locked)
{
struct net_device *dev = local->dev;
printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name);
hostap_remove_interface(local->stadev, rtnl_locked, 1);
local->stadev = NULL;
return 0;
}
int hostap_set_hostapd(local_info_t *local, int val, int rtnl_locked)
{
int ret;
if (val < 0 || val > 1)
return -EINVAL;
if (local->hostapd == val)
return 0;
if (val) {
ret = hostap_enable_hostapd(local, rtnl_locked);
if (ret == 0)
local->hostapd = 1;
} else {
local->hostapd = 0;
ret = hostap_disable_hostapd(local, rtnl_locked);
if (ret != 0)
local->hostapd = 1;
}
return ret;
}
int hostap_set_hostapd_sta(local_info_t *local, int val, int rtnl_locked)
{
int ret;
if (val < 0 || val > 1)
return -EINVAL;
if (local->hostapd_sta == val)
return 0;
if (val) {
ret = hostap_enable_hostapd_sta(local, rtnl_locked);
if (ret == 0)
local->hostapd_sta = 1;
} else {
local->hostapd_sta = 0;
ret = hostap_disable_hostapd_sta(local, rtnl_locked);
if (ret != 0)
local->hostapd_sta = 1;
}
return ret;
}
int prism2_update_comms_qual(struct net_device *dev)
{
struct hostap_interface *iface;
local_info_t *local;
int ret = 0;
struct hfa384x_comms_quality sq;
iface = netdev_priv(dev);
local = iface->local;
if (!local->sta_fw_ver)
ret = -1;
else if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1)) {
if (local->func->get_rid(local->dev,
HFA384X_RID_DBMCOMMSQUALITY,
&sq, sizeof(sq), 1) >= 0) {
local->comms_qual = (s16) le16_to_cpu(sq.comm_qual);
local->avg_signal = (s16) le16_to_cpu(sq.signal_level);
local->avg_noise = (s16) le16_to_cpu(sq.noise_level);
local->last_comms_qual_update = jiffies;
} else
ret = -1;
} else {
if (local->func->get_rid(local->dev, HFA384X_RID_COMMSQUALITY,
&sq, sizeof(sq), 1) >= 0) {
local->comms_qual = le16_to_cpu(sq.comm_qual);
local->avg_signal = HFA384X_LEVEL_TO_dBm(
le16_to_cpu(sq.signal_level));
local->avg_noise = HFA384X_LEVEL_TO_dBm(
le16_to_cpu(sq.noise_level));
local->last_comms_qual_update = jiffies;
} else
ret = -1;
}
return ret;
}
int prism2_sta_send_mgmt(local_info_t *local, u8 *dst, u16 stype,
u8 *body, size_t bodylen)
{
struct sk_buff *skb;
struct hostap_ieee80211_mgmt *mgmt;
struct hostap_skb_tx_data *meta;
struct net_device *dev = local->dev;
skb = dev_alloc_skb(IEEE80211_MGMT_HDR_LEN + bodylen);
if (skb == NULL)
return -ENOMEM;
mgmt = (struct hostap_ieee80211_mgmt *)
skb_put(skb, IEEE80211_MGMT_HDR_LEN);
memset(mgmt, 0, IEEE80211_MGMT_HDR_LEN);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
memcpy(mgmt->da, dst, ETH_ALEN);
memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
memcpy(mgmt->bssid, dst, ETH_ALEN);
if (body)
memcpy(skb_put(skb, bodylen), body, bodylen);
meta = (struct hostap_skb_tx_data *) skb->cb;
memset(meta, 0, sizeof(*meta));
meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
meta->iface = netdev_priv(dev);
skb->dev = dev;
skb->mac.raw = skb->nh.raw = skb->data;
dev_queue_xmit(skb);
return 0;
}
int prism2_sta_deauth(local_info_t *local, u16 reason)
{
union iwreq_data wrqu;
int ret;
if (local->iw_mode != IW_MODE_INFRA ||
memcmp(local->bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0 ||
memcmp(local->bssid, "\x44\x44\x44\x44\x44\x44", ETH_ALEN) == 0)
return 0;
reason = cpu_to_le16(reason);
ret = prism2_sta_send_mgmt(local, local->bssid, IEEE80211_STYPE_DEAUTH,
(u8 *) &reason, 2);
memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
return ret;
}
struct proc_dir_entry *hostap_proc;
static int __init hostap_init(void)
{
if (proc_net != NULL) {
hostap_proc = proc_mkdir("hostap", proc_net);
if (!hostap_proc)
printk(KERN_WARNING "Failed to mkdir "
"/proc/net/hostap\n");
} else
hostap_proc = NULL;
return 0;
}
static void __exit hostap_exit(void)
{
if (hostap_proc != NULL) {
hostap_proc = NULL;
remove_proc_entry("hostap", proc_net);
}
}
EXPORT_SYMBOL(hostap_set_word);
EXPORT_SYMBOL(hostap_set_string);
EXPORT_SYMBOL(hostap_get_porttype);
EXPORT_SYMBOL(hostap_set_encryption);
EXPORT_SYMBOL(hostap_set_antsel);
EXPORT_SYMBOL(hostap_set_roaming);
EXPORT_SYMBOL(hostap_set_auth_algs);
EXPORT_SYMBOL(hostap_dump_rx_header);
EXPORT_SYMBOL(hostap_dump_tx_header);
EXPORT_SYMBOL(hostap_80211_header_parse);
EXPORT_SYMBOL(hostap_80211_prism_header_parse);
EXPORT_SYMBOL(hostap_80211_get_hdrlen);
EXPORT_SYMBOL(hostap_get_stats);
EXPORT_SYMBOL(hostap_setup_dev);
EXPORT_SYMBOL(hostap_proc);
EXPORT_SYMBOL(hostap_set_multicast_list_queue);
EXPORT_SYMBOL(hostap_set_hostapd);
EXPORT_SYMBOL(hostap_set_hostapd_sta);
EXPORT_SYMBOL(hostap_add_interface);
EXPORT_SYMBOL(hostap_remove_interface);
EXPORT_SYMBOL(prism2_update_comms_qual);
module_init(hostap_init);
module_exit(hostap_exit);
