![Nicolas Kaiser](/assets/img/avatar_default.png)
Correct always true conditionals. Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
973 lines
22 KiB
C
973 lines
22 KiB
C
/*
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* mac80211 configuration hooks for cfg80211
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*
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* Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
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*
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* This file is GPLv2 as found in COPYING.
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*/
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#include <linux/ieee80211.h>
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#include <linux/nl80211.h>
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#include <linux/rtnetlink.h>
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#include <net/net_namespace.h>
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#include <linux/rcupdate.h>
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#include <net/cfg80211.h>
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#include "ieee80211_i.h"
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#include "cfg.h"
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#include "rate.h"
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#include "mesh.h"
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static enum ieee80211_if_types
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nl80211_type_to_mac80211_type(enum nl80211_iftype type)
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{
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switch (type) {
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case NL80211_IFTYPE_UNSPECIFIED:
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return IEEE80211_IF_TYPE_STA;
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case NL80211_IFTYPE_ADHOC:
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return IEEE80211_IF_TYPE_IBSS;
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case NL80211_IFTYPE_STATION:
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return IEEE80211_IF_TYPE_STA;
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case NL80211_IFTYPE_MONITOR:
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return IEEE80211_IF_TYPE_MNTR;
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#ifdef CONFIG_MAC80211_MESH
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case NL80211_IFTYPE_MESH_POINT:
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return IEEE80211_IF_TYPE_MESH_POINT;
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#endif
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case NL80211_IFTYPE_WDS:
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return IEEE80211_IF_TYPE_WDS;
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default:
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return IEEE80211_IF_TYPE_INVALID;
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}
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}
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static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
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enum nl80211_iftype type, u32 *flags,
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struct vif_params *params)
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{
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struct ieee80211_local *local = wiphy_priv(wiphy);
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enum ieee80211_if_types itype;
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struct net_device *dev;
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struct ieee80211_sub_if_data *sdata;
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int err;
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if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
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return -ENODEV;
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itype = nl80211_type_to_mac80211_type(type);
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if (itype == IEEE80211_IF_TYPE_INVALID)
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return -EINVAL;
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err = ieee80211_if_add(local->mdev, name, &dev, itype, params);
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if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags)
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return err;
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sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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sdata->u.mntr_flags = *flags;
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return 0;
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}
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static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
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{
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struct ieee80211_local *local = wiphy_priv(wiphy);
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struct net_device *dev;
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char *name;
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if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
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return -ENODEV;
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/* we're under RTNL */
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dev = __dev_get_by_index(&init_net, ifindex);
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if (!dev)
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return 0;
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name = dev->name;
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return ieee80211_if_remove(local->mdev, name, -1);
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}
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static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
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enum nl80211_iftype type, u32 *flags,
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struct vif_params *params)
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{
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struct ieee80211_local *local = wiphy_priv(wiphy);
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struct net_device *dev;
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enum ieee80211_if_types itype;
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struct ieee80211_sub_if_data *sdata;
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if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
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return -ENODEV;
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/* we're under RTNL */
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dev = __dev_get_by_index(&init_net, ifindex);
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if (!dev)
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return -ENODEV;
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if (netif_running(dev))
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return -EBUSY;
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itype = nl80211_type_to_mac80211_type(type);
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if (itype == IEEE80211_IF_TYPE_INVALID)
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return -EINVAL;
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sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
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return -EOPNOTSUPP;
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ieee80211_if_reinit(dev);
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ieee80211_if_set_type(dev, itype);
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if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
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ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
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params->mesh_id_len,
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params->mesh_id);
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if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags)
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return 0;
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sdata->u.mntr_flags = *flags;
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return 0;
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}
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static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
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u8 key_idx, u8 *mac_addr,
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struct key_params *params)
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{
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struct ieee80211_sub_if_data *sdata;
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struct sta_info *sta = NULL;
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enum ieee80211_key_alg alg;
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struct ieee80211_key *key;
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int err;
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sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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switch (params->cipher) {
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case WLAN_CIPHER_SUITE_WEP40:
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case WLAN_CIPHER_SUITE_WEP104:
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alg = ALG_WEP;
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break;
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case WLAN_CIPHER_SUITE_TKIP:
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alg = ALG_TKIP;
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break;
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case WLAN_CIPHER_SUITE_CCMP:
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alg = ALG_CCMP;
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break;
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default:
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return -EINVAL;
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}
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key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key);
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if (!key)
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return -ENOMEM;
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rcu_read_lock();
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if (mac_addr) {
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sta = sta_info_get(sdata->local, mac_addr);
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if (!sta) {
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ieee80211_key_free(key);
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err = -ENOENT;
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goto out_unlock;
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}
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}
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ieee80211_key_link(key, sdata, sta);
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err = 0;
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out_unlock:
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rcu_read_unlock();
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return err;
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}
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static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
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u8 key_idx, u8 *mac_addr)
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{
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struct ieee80211_sub_if_data *sdata;
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struct sta_info *sta;
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int ret;
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sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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rcu_read_lock();
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if (mac_addr) {
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ret = -ENOENT;
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sta = sta_info_get(sdata->local, mac_addr);
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if (!sta)
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goto out_unlock;
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if (sta->key) {
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ieee80211_key_free(sta->key);
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WARN_ON(sta->key);
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ret = 0;
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}
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goto out_unlock;
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}
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if (!sdata->keys[key_idx]) {
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ret = -ENOENT;
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goto out_unlock;
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}
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ieee80211_key_free(sdata->keys[key_idx]);
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WARN_ON(sdata->keys[key_idx]);
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ret = 0;
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out_unlock:
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rcu_read_unlock();
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return ret;
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}
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static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
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u8 key_idx, u8 *mac_addr, void *cookie,
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void (*callback)(void *cookie,
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struct key_params *params))
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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struct sta_info *sta = NULL;
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u8 seq[6] = {0};
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struct key_params params;
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struct ieee80211_key *key;
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u32 iv32;
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u16 iv16;
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int err = -ENOENT;
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rcu_read_lock();
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if (mac_addr) {
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sta = sta_info_get(sdata->local, mac_addr);
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if (!sta)
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goto out;
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key = sta->key;
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} else
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key = sdata->keys[key_idx];
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if (!key)
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goto out;
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memset(¶ms, 0, sizeof(params));
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switch (key->conf.alg) {
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case ALG_TKIP:
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params.cipher = WLAN_CIPHER_SUITE_TKIP;
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iv32 = key->u.tkip.iv32;
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iv16 = key->u.tkip.iv16;
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if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
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sdata->local->ops->get_tkip_seq)
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sdata->local->ops->get_tkip_seq(
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local_to_hw(sdata->local),
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key->conf.hw_key_idx,
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&iv32, &iv16);
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seq[0] = iv16 & 0xff;
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seq[1] = (iv16 >> 8) & 0xff;
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seq[2] = iv32 & 0xff;
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seq[3] = (iv32 >> 8) & 0xff;
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seq[4] = (iv32 >> 16) & 0xff;
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seq[5] = (iv32 >> 24) & 0xff;
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params.seq = seq;
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params.seq_len = 6;
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break;
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case ALG_CCMP:
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params.cipher = WLAN_CIPHER_SUITE_CCMP;
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seq[0] = key->u.ccmp.tx_pn[5];
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seq[1] = key->u.ccmp.tx_pn[4];
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seq[2] = key->u.ccmp.tx_pn[3];
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seq[3] = key->u.ccmp.tx_pn[2];
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seq[4] = key->u.ccmp.tx_pn[1];
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seq[5] = key->u.ccmp.tx_pn[0];
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params.seq = seq;
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params.seq_len = 6;
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break;
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case ALG_WEP:
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if (key->conf.keylen == 5)
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params.cipher = WLAN_CIPHER_SUITE_WEP40;
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else
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params.cipher = WLAN_CIPHER_SUITE_WEP104;
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break;
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}
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params.key = key->conf.key;
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params.key_len = key->conf.keylen;
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callback(cookie, ¶ms);
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err = 0;
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out:
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rcu_read_unlock();
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return err;
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}
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static int ieee80211_config_default_key(struct wiphy *wiphy,
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struct net_device *dev,
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u8 key_idx)
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{
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struct ieee80211_sub_if_data *sdata;
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rcu_read_lock();
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sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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ieee80211_set_default_key(sdata, key_idx);
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rcu_read_unlock();
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return 0;
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}
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static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
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{
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struct ieee80211_sub_if_data *sdata = sta->sdata;
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sinfo->filled = STATION_INFO_INACTIVE_TIME |
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STATION_INFO_RX_BYTES |
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STATION_INFO_TX_BYTES;
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sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
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sinfo->rx_bytes = sta->rx_bytes;
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sinfo->tx_bytes = sta->tx_bytes;
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if (ieee80211_vif_is_mesh(&sdata->vif)) {
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#ifdef CONFIG_MAC80211_MESH
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sinfo->filled |= STATION_INFO_LLID |
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STATION_INFO_PLID |
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STATION_INFO_PLINK_STATE;
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sinfo->llid = le16_to_cpu(sta->llid);
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sinfo->plid = le16_to_cpu(sta->plid);
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sinfo->plink_state = sta->plink_state;
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#endif
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}
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}
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static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
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int idx, u8 *mac, struct station_info *sinfo)
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{
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struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
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struct sta_info *sta;
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int ret = -ENOENT;
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rcu_read_lock();
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sta = sta_info_get_by_idx(local, idx, dev);
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if (sta) {
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ret = 0;
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memcpy(mac, sta->addr, ETH_ALEN);
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sta_set_sinfo(sta, sinfo);
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}
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rcu_read_unlock();
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return ret;
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}
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static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
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u8 *mac, struct station_info *sinfo)
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{
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struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
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struct sta_info *sta;
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int ret = -ENOENT;
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rcu_read_lock();
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/* XXX: verify sta->dev == dev */
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sta = sta_info_get(local, mac);
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if (sta) {
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ret = 0;
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sta_set_sinfo(sta, sinfo);
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}
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rcu_read_unlock();
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return ret;
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}
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/*
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* This handles both adding a beacon and setting new beacon info
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*/
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static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
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struct beacon_parameters *params)
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{
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struct beacon_data *new, *old;
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int new_head_len, new_tail_len;
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int size;
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int err = -EINVAL;
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old = sdata->u.ap.beacon;
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/* head must not be zero-length */
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if (params->head && !params->head_len)
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return -EINVAL;
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/*
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* This is a kludge. beacon interval should really be part
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* of the beacon information.
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*/
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if (params->interval) {
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sdata->local->hw.conf.beacon_int = params->interval;
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if (ieee80211_hw_config(sdata->local))
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return -EINVAL;
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/*
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* We updated some parameter so if below bails out
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* it's not an error.
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*/
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err = 0;
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}
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/* Need to have a beacon head if we don't have one yet */
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if (!params->head && !old)
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return err;
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/* sorry, no way to start beaconing without dtim period */
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if (!params->dtim_period && !old)
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return err;
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/* new or old head? */
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if (params->head)
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new_head_len = params->head_len;
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else
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new_head_len = old->head_len;
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/* new or old tail? */
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if (params->tail || !old)
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/* params->tail_len will be zero for !params->tail */
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new_tail_len = params->tail_len;
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else
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new_tail_len = old->tail_len;
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size = sizeof(*new) + new_head_len + new_tail_len;
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new = kzalloc(size, GFP_KERNEL);
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if (!new)
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return -ENOMEM;
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/* start filling the new info now */
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/* new or old dtim period? */
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if (params->dtim_period)
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new->dtim_period = params->dtim_period;
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else
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new->dtim_period = old->dtim_period;
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/*
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* pointers go into the block we allocated,
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* memory is | beacon_data | head | tail |
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*/
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new->head = ((u8 *) new) + sizeof(*new);
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new->tail = new->head + new_head_len;
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new->head_len = new_head_len;
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new->tail_len = new_tail_len;
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/* copy in head */
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if (params->head)
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memcpy(new->head, params->head, new_head_len);
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else
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memcpy(new->head, old->head, new_head_len);
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/* copy in optional tail */
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if (params->tail)
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memcpy(new->tail, params->tail, new_tail_len);
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else
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if (old)
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memcpy(new->tail, old->tail, new_tail_len);
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rcu_assign_pointer(sdata->u.ap.beacon, new);
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synchronize_rcu();
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kfree(old);
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return ieee80211_if_config_beacon(sdata->dev);
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}
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static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
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struct beacon_parameters *params)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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struct beacon_data *old;
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if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
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return -EINVAL;
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old = sdata->u.ap.beacon;
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if (old)
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return -EALREADY;
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return ieee80211_config_beacon(sdata, params);
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}
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static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
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struct beacon_parameters *params)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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struct beacon_data *old;
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if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
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return -EINVAL;
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old = sdata->u.ap.beacon;
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if (!old)
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return -ENOENT;
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return ieee80211_config_beacon(sdata, params);
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}
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static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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struct beacon_data *old;
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if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
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return -EINVAL;
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old = sdata->u.ap.beacon;
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if (!old)
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return -ENOENT;
|
|
|
|
rcu_assign_pointer(sdata->u.ap.beacon, NULL);
|
|
synchronize_rcu();
|
|
kfree(old);
|
|
|
|
return ieee80211_if_config_beacon(dev);
|
|
}
|
|
|
|
/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
|
|
struct iapp_layer2_update {
|
|
u8 da[ETH_ALEN]; /* broadcast */
|
|
u8 sa[ETH_ALEN]; /* STA addr */
|
|
__be16 len; /* 6 */
|
|
u8 dsap; /* 0 */
|
|
u8 ssap; /* 0 */
|
|
u8 control;
|
|
u8 xid_info[3];
|
|
} __attribute__ ((packed));
|
|
|
|
static void ieee80211_send_layer2_update(struct sta_info *sta)
|
|
{
|
|
struct iapp_layer2_update *msg;
|
|
struct sk_buff *skb;
|
|
|
|
/* Send Level 2 Update Frame to update forwarding tables in layer 2
|
|
* bridge devices */
|
|
|
|
skb = dev_alloc_skb(sizeof(*msg));
|
|
if (!skb)
|
|
return;
|
|
msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
|
|
|
|
/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
|
|
* Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
|
|
|
|
memset(msg->da, 0xff, ETH_ALEN);
|
|
memcpy(msg->sa, sta->addr, ETH_ALEN);
|
|
msg->len = htons(6);
|
|
msg->dsap = 0;
|
|
msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
|
|
msg->control = 0xaf; /* XID response lsb.1111F101.
|
|
* F=0 (no poll command; unsolicited frame) */
|
|
msg->xid_info[0] = 0x81; /* XID format identifier */
|
|
msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
|
|
msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
|
|
|
|
skb->dev = sta->sdata->dev;
|
|
skb->protocol = eth_type_trans(skb, sta->sdata->dev);
|
|
memset(skb->cb, 0, sizeof(skb->cb));
|
|
netif_rx(skb);
|
|
}
|
|
|
|
static void sta_apply_parameters(struct ieee80211_local *local,
|
|
struct sta_info *sta,
|
|
struct station_parameters *params)
|
|
{
|
|
u32 rates;
|
|
int i, j;
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_sub_if_data *sdata = sta->sdata;
|
|
|
|
/*
|
|
* FIXME: updating the flags is racy when this function is
|
|
* called from ieee80211_change_station(), this will
|
|
* be resolved in a future patch.
|
|
*/
|
|
|
|
if (params->station_flags & STATION_FLAG_CHANGED) {
|
|
sta->flags &= ~WLAN_STA_AUTHORIZED;
|
|
if (params->station_flags & STATION_FLAG_AUTHORIZED)
|
|
sta->flags |= WLAN_STA_AUTHORIZED;
|
|
|
|
sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
|
|
if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
|
|
sta->flags |= WLAN_STA_SHORT_PREAMBLE;
|
|
|
|
sta->flags &= ~WLAN_STA_WME;
|
|
if (params->station_flags & STATION_FLAG_WME)
|
|
sta->flags |= WLAN_STA_WME;
|
|
}
|
|
|
|
/*
|
|
* FIXME: updating the following information is racy when this
|
|
* function is called from ieee80211_change_station().
|
|
* However, all this information should be static so
|
|
* maybe we should just reject attemps to change it.
|
|
*/
|
|
|
|
if (params->aid) {
|
|
sta->aid = params->aid;
|
|
if (sta->aid > IEEE80211_MAX_AID)
|
|
sta->aid = 0; /* XXX: should this be an error? */
|
|
}
|
|
|
|
if (params->listen_interval >= 0)
|
|
sta->listen_interval = params->listen_interval;
|
|
|
|
if (params->supported_rates) {
|
|
rates = 0;
|
|
sband = local->hw.wiphy->bands[local->oper_channel->band];
|
|
|
|
for (i = 0; i < params->supported_rates_len; i++) {
|
|
int rate = (params->supported_rates[i] & 0x7f) * 5;
|
|
for (j = 0; j < sband->n_bitrates; j++) {
|
|
if (sband->bitrates[j].bitrate == rate)
|
|
rates |= BIT(j);
|
|
}
|
|
}
|
|
sta->supp_rates[local->oper_channel->band] = rates;
|
|
}
|
|
|
|
if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
|
|
switch (params->plink_action) {
|
|
case PLINK_ACTION_OPEN:
|
|
mesh_plink_open(sta);
|
|
break;
|
|
case PLINK_ACTION_BLOCK:
|
|
mesh_plink_block(sta);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
|
|
u8 *mac, struct station_parameters *params)
|
|
{
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
|
struct sta_info *sta;
|
|
struct ieee80211_sub_if_data *sdata;
|
|
int err;
|
|
|
|
/* Prevent a race with changing the rate control algorithm */
|
|
if (!netif_running(dev))
|
|
return -ENETDOWN;
|
|
|
|
if (params->vlan) {
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
|
|
|
|
if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN &&
|
|
sdata->vif.type != IEEE80211_IF_TYPE_AP)
|
|
return -EINVAL;
|
|
} else
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
|
|
|
if (compare_ether_addr(mac, dev->dev_addr) == 0)
|
|
return -EINVAL;
|
|
|
|
if (is_multicast_ether_addr(mac))
|
|
return -EINVAL;
|
|
|
|
sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
|
|
if (!sta)
|
|
return -ENOMEM;
|
|
|
|
sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
|
|
|
|
sta_apply_parameters(local, sta, params);
|
|
|
|
rate_control_rate_init(sta, local);
|
|
|
|
rcu_read_lock();
|
|
|
|
err = sta_info_insert(sta);
|
|
if (err) {
|
|
/* STA has been freed */
|
|
rcu_read_unlock();
|
|
return err;
|
|
}
|
|
|
|
if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN ||
|
|
sdata->vif.type == IEEE80211_IF_TYPE_AP)
|
|
ieee80211_send_layer2_update(sta);
|
|
|
|
rcu_read_unlock();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
|
|
u8 *mac)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct sta_info *sta;
|
|
|
|
if (mac) {
|
|
rcu_read_lock();
|
|
|
|
/* XXX: get sta belonging to dev */
|
|
sta = sta_info_get(local, mac);
|
|
if (!sta) {
|
|
rcu_read_unlock();
|
|
return -ENOENT;
|
|
}
|
|
|
|
sta_info_unlink(&sta);
|
|
rcu_read_unlock();
|
|
|
|
sta_info_destroy(sta);
|
|
} else
|
|
sta_info_flush(local, sdata);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ieee80211_change_station(struct wiphy *wiphy,
|
|
struct net_device *dev,
|
|
u8 *mac,
|
|
struct station_parameters *params)
|
|
{
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
|
struct sta_info *sta;
|
|
struct ieee80211_sub_if_data *vlansdata;
|
|
|
|
rcu_read_lock();
|
|
|
|
/* XXX: get sta belonging to dev */
|
|
sta = sta_info_get(local, mac);
|
|
if (!sta) {
|
|
rcu_read_unlock();
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (params->vlan && params->vlan != sta->sdata->dev) {
|
|
vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
|
|
|
|
if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN &&
|
|
vlansdata->vif.type != IEEE80211_IF_TYPE_AP) {
|
|
rcu_read_unlock();
|
|
return -EINVAL;
|
|
}
|
|
|
|
sta->sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
|
|
ieee80211_send_layer2_update(sta);
|
|
}
|
|
|
|
sta_apply_parameters(local, sta, params);
|
|
|
|
rcu_read_unlock();
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_MAC80211_MESH
|
|
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
|
|
u8 *dst, u8 *next_hop)
|
|
{
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
|
struct mesh_path *mpath;
|
|
struct sta_info *sta;
|
|
int err;
|
|
|
|
if (!netif_running(dev))
|
|
return -ENETDOWN;
|
|
|
|
if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
|
|
return -ENOTSUPP;
|
|
|
|
rcu_read_lock();
|
|
sta = sta_info_get(local, next_hop);
|
|
if (!sta) {
|
|
rcu_read_unlock();
|
|
return -ENOENT;
|
|
}
|
|
|
|
err = mesh_path_add(dst, dev);
|
|
if (err) {
|
|
rcu_read_unlock();
|
|
return err;
|
|
}
|
|
|
|
mpath = mesh_path_lookup(dst, dev);
|
|
if (!mpath) {
|
|
rcu_read_unlock();
|
|
return -ENXIO;
|
|
}
|
|
mesh_path_fix_nexthop(mpath, sta);
|
|
|
|
rcu_read_unlock();
|
|
return 0;
|
|
}
|
|
|
|
static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
|
|
u8 *dst)
|
|
{
|
|
if (dst)
|
|
return mesh_path_del(dst, dev);
|
|
|
|
mesh_path_flush(dev);
|
|
return 0;
|
|
}
|
|
|
|
static int ieee80211_change_mpath(struct wiphy *wiphy,
|
|
struct net_device *dev,
|
|
u8 *dst, u8 *next_hop)
|
|
{
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
|
struct mesh_path *mpath;
|
|
struct sta_info *sta;
|
|
|
|
if (!netif_running(dev))
|
|
return -ENETDOWN;
|
|
|
|
if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
|
|
return -ENOTSUPP;
|
|
|
|
rcu_read_lock();
|
|
|
|
sta = sta_info_get(local, next_hop);
|
|
if (!sta) {
|
|
rcu_read_unlock();
|
|
return -ENOENT;
|
|
}
|
|
|
|
mpath = mesh_path_lookup(dst, dev);
|
|
if (!mpath) {
|
|
rcu_read_unlock();
|
|
return -ENOENT;
|
|
}
|
|
|
|
mesh_path_fix_nexthop(mpath, sta);
|
|
|
|
rcu_read_unlock();
|
|
return 0;
|
|
}
|
|
|
|
static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
|
|
struct mpath_info *pinfo)
|
|
{
|
|
if (mpath->next_hop)
|
|
memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN);
|
|
else
|
|
memset(next_hop, 0, ETH_ALEN);
|
|
|
|
pinfo->filled = MPATH_INFO_FRAME_QLEN |
|
|
MPATH_INFO_DSN |
|
|
MPATH_INFO_METRIC |
|
|
MPATH_INFO_EXPTIME |
|
|
MPATH_INFO_DISCOVERY_TIMEOUT |
|
|
MPATH_INFO_DISCOVERY_RETRIES |
|
|
MPATH_INFO_FLAGS;
|
|
|
|
pinfo->frame_qlen = mpath->frame_queue.qlen;
|
|
pinfo->dsn = mpath->dsn;
|
|
pinfo->metric = mpath->metric;
|
|
if (time_before(jiffies, mpath->exp_time))
|
|
pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
|
|
pinfo->discovery_timeout =
|
|
jiffies_to_msecs(mpath->discovery_timeout);
|
|
pinfo->discovery_retries = mpath->discovery_retries;
|
|
pinfo->flags = 0;
|
|
if (mpath->flags & MESH_PATH_ACTIVE)
|
|
pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
|
|
if (mpath->flags & MESH_PATH_RESOLVING)
|
|
pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
|
|
if (mpath->flags & MESH_PATH_DSN_VALID)
|
|
pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID;
|
|
if (mpath->flags & MESH_PATH_FIXED)
|
|
pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
|
|
if (mpath->flags & MESH_PATH_RESOLVING)
|
|
pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
|
|
|
|
pinfo->flags = mpath->flags;
|
|
}
|
|
|
|
static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
|
|
u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
|
|
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
|
struct mesh_path *mpath;
|
|
|
|
if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
|
|
return -ENOTSUPP;
|
|
|
|
rcu_read_lock();
|
|
mpath = mesh_path_lookup(dst, dev);
|
|
if (!mpath) {
|
|
rcu_read_unlock();
|
|
return -ENOENT;
|
|
}
|
|
memcpy(dst, mpath->dst, ETH_ALEN);
|
|
mpath_set_pinfo(mpath, next_hop, pinfo);
|
|
rcu_read_unlock();
|
|
return 0;
|
|
}
|
|
|
|
static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
|
|
int idx, u8 *dst, u8 *next_hop,
|
|
struct mpath_info *pinfo)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
|
struct mesh_path *mpath;
|
|
|
|
if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
|
|
return -ENOTSUPP;
|
|
|
|
rcu_read_lock();
|
|
mpath = mesh_path_lookup_by_idx(idx, dev);
|
|
if (!mpath) {
|
|
rcu_read_unlock();
|
|
return -ENOENT;
|
|
}
|
|
memcpy(dst, mpath->dst, ETH_ALEN);
|
|
mpath_set_pinfo(mpath, next_hop, pinfo);
|
|
rcu_read_unlock();
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
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,
|
|
.add_beacon = ieee80211_add_beacon,
|
|
.set_beacon = ieee80211_set_beacon,
|
|
.del_beacon = ieee80211_del_beacon,
|
|
.add_station = ieee80211_add_station,
|
|
.del_station = ieee80211_del_station,
|
|
.change_station = ieee80211_change_station,
|
|
.get_station = ieee80211_get_station,
|
|
.dump_station = ieee80211_dump_station,
|
|
#ifdef CONFIG_MAC80211_MESH
|
|
.add_mpath = ieee80211_add_mpath,
|
|
.del_mpath = ieee80211_del_mpath,
|
|
.change_mpath = ieee80211_change_mpath,
|
|
.get_mpath = ieee80211_get_mpath,
|
|
.dump_mpath = ieee80211_dump_mpath,
|
|
#endif
|
|
};
|