| /* |
| * 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->vif.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(¶ms, 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, ¶ms); |
| 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, |
| }; |