blob: 11156b381ec3a6436c35e04ffa1f1b5dbabb0c70 [file] [log] [blame]
/*
* mac80211 configuration hooks for cfg80211
*
* Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
*
* This file is GPLv2 as found in COPYING.
*/
#include <linux/ieee80211.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
#include <net/net_namespace.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
#include "cfg.h"
static enum ieee80211_if_types
nl80211_type_to_mac80211_type(enum nl80211_iftype type)
{
switch (type) {
case NL80211_IFTYPE_UNSPECIFIED:
return IEEE80211_IF_TYPE_STA;
case NL80211_IFTYPE_ADHOC:
return IEEE80211_IF_TYPE_IBSS;
case NL80211_IFTYPE_STATION:
return IEEE80211_IF_TYPE_STA;
case NL80211_IFTYPE_MONITOR:
return IEEE80211_IF_TYPE_MNTR;
default:
return IEEE80211_IF_TYPE_INVALID;
}
}
static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
enum nl80211_iftype type)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
enum ieee80211_if_types itype;
if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
return -ENODEV;
itype = nl80211_type_to_mac80211_type(type);
if (itype == IEEE80211_IF_TYPE_INVALID)
return -EINVAL;
return ieee80211_if_add(local->mdev, name, NULL, itype);
}
static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct net_device *dev;
char *name;
if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
return -ENODEV;
/* we're under RTNL */
dev = __dev_get_by_index(&init_net, ifindex);
if (!dev)
return 0;
name = dev->name;
return ieee80211_if_remove(local->mdev, name, -1);
}
static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
enum nl80211_iftype type)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct net_device *dev;
enum ieee80211_if_types itype;
struct ieee80211_sub_if_data *sdata;
if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
return -ENODEV;
/* we're under RTNL */
dev = __dev_get_by_index(&init_net, ifindex);
if (!dev)
return -ENODEV;
if (netif_running(dev))
return -EBUSY;
itype = nl80211_type_to_mac80211_type(type);
if (itype == IEEE80211_IF_TYPE_INVALID)
return -EINVAL;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->type == IEEE80211_IF_TYPE_VLAN)
return -EOPNOTSUPP;
ieee80211_if_reinit(dev);
ieee80211_if_set_type(dev, itype);
return 0;
}
static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_idx, u8 *mac_addr,
struct key_params *params)
{
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta = NULL;
enum ieee80211_key_alg alg;
int ret;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
switch (params->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
alg = ALG_WEP;
break;
case WLAN_CIPHER_SUITE_TKIP:
alg = ALG_TKIP;
break;
case WLAN_CIPHER_SUITE_CCMP:
alg = ALG_CCMP;
break;
default:
return -EINVAL;
}
if (mac_addr) {
sta = sta_info_get(sdata->local, mac_addr);
if (!sta)
return -ENOENT;
}
ret = 0;
if (!ieee80211_key_alloc(sdata, sta, alg, key_idx,
params->key_len, params->key))
ret = -ENOMEM;
if (sta)
sta_info_put(sta);
return ret;
}
static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_idx, u8 *mac_addr)
{
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
int ret;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (mac_addr) {
sta = sta_info_get(sdata->local, mac_addr);
if (!sta)
return -ENOENT;
ret = 0;
if (sta->key)
ieee80211_key_free(sta->key);
else
ret = -ENOENT;
sta_info_put(sta);
return ret;
}
if (!sdata->keys[key_idx])
return -ENOENT;
ieee80211_key_free(sdata->keys[key_idx]);
return 0;
}
static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_idx, u8 *mac_addr, void *cookie,
void (*callback)(void *cookie,
struct key_params *params))
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct sta_info *sta = NULL;
u8 seq[6] = {0};
struct key_params params;
struct ieee80211_key *key;
u32 iv32;
u16 iv16;
int err = -ENOENT;
if (mac_addr) {
sta = sta_info_get(sdata->local, mac_addr);
if (!sta)
goto out;
key = sta->key;
} else
key = sdata->keys[key_idx];
if (!key)
goto out;
memset(&params, 0, sizeof(params));
switch (key->conf.alg) {
case ALG_TKIP:
params.cipher = WLAN_CIPHER_SUITE_TKIP;
iv32 = key->u.tkip.iv32;
iv16 = key->u.tkip.iv16;
if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
sdata->local->ops->get_tkip_seq)
sdata->local->ops->get_tkip_seq(
local_to_hw(sdata->local),
key->conf.hw_key_idx,
&iv32, &iv16);
seq[0] = iv16 & 0xff;
seq[1] = (iv16 >> 8) & 0xff;
seq[2] = iv32 & 0xff;
seq[3] = (iv32 >> 8) & 0xff;
seq[4] = (iv32 >> 16) & 0xff;
seq[5] = (iv32 >> 24) & 0xff;
params.seq = seq;
params.seq_len = 6;
break;
case ALG_CCMP:
params.cipher = WLAN_CIPHER_SUITE_CCMP;
seq[0] = key->u.ccmp.tx_pn[5];
seq[1] = key->u.ccmp.tx_pn[4];
seq[2] = key->u.ccmp.tx_pn[3];
seq[3] = key->u.ccmp.tx_pn[2];
seq[4] = key->u.ccmp.tx_pn[1];
seq[5] = key->u.ccmp.tx_pn[0];
params.seq = seq;
params.seq_len = 6;
break;
case ALG_WEP:
if (key->conf.keylen == 5)
params.cipher = WLAN_CIPHER_SUITE_WEP40;
else
params.cipher = WLAN_CIPHER_SUITE_WEP104;
break;
}
params.key = key->conf.key;
params.key_len = key->conf.keylen;
callback(cookie, &params);
err = 0;
out:
if (sta)
sta_info_put(sta);
return err;
}
static int ieee80211_config_default_key(struct wiphy *wiphy,
struct net_device *dev,
u8 key_idx)
{
struct ieee80211_sub_if_data *sdata;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
ieee80211_set_default_key(sdata, key_idx);
return 0;
}
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_stats *stats)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta;
sta = sta_info_get(local, mac);
if (!sta)
return -ENOENT;
/* XXX: verify sta->dev == dev */
stats->filled = STATION_STAT_INACTIVE_TIME |
STATION_STAT_RX_BYTES |
STATION_STAT_TX_BYTES;
stats->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
stats->rx_bytes = sta->rx_bytes;
stats->tx_bytes = sta->tx_bytes;
sta_info_put(sta);
return 0;
}
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
.change_virtual_intf = ieee80211_change_iface,
.add_key = ieee80211_add_key,
.del_key = ieee80211_del_key,
.get_key = ieee80211_get_key,
.set_default_key = ieee80211_config_default_key,
.get_station = ieee80211_get_station,
};