1 files changed, 666 insertions, 158 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index ab9d8f14e15..353e1a4ece8 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -111,6 +111,11 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
 			      .len = IEEE80211_MAX_DATA_LEN },
 	[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 	[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
+
+	[NL80211_ATTR_SSID] = { .type = NLA_BINARY,
+				.len = IEEE80211_MAX_SSID_LEN },
+	[NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
+	[NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 };
 
 /* message building helper */
@@ -131,6 +136,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 	struct nlattr *nl_freqs, *nl_freq;
 	struct nlattr *nl_rates, *nl_rate;
 	struct nlattr *nl_modes;
+	struct nlattr *nl_cmds;
 	enum ieee80211_band band;
 	struct ieee80211_channel *chan;
 	struct ieee80211_rate *rate;
@@ -242,6 +248,35 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 	}
 	nla_nest_end(msg, nl_bands);
 
+	nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
+	if (!nl_cmds)
+		goto nla_put_failure;
+
+	i = 0;
+#define CMD(op, n)						\
+	 do {							\
+		if (dev->ops->op) {				\
+			i++;					\
+			NLA_PUT_U32(msg, i, NL80211_CMD_ ## n);	\
+		}						\
+	} while (0)
+
+	CMD(add_virtual_intf, NEW_INTERFACE);
+	CMD(change_virtual_intf, SET_INTERFACE);
+	CMD(add_key, NEW_KEY);
+	CMD(add_beacon, NEW_BEACON);
+	CMD(add_station, NEW_STATION);
+	CMD(add_mpath, NEW_MPATH);
+	CMD(set_mesh_params, SET_MESH_PARAMS);
+	CMD(change_bss, SET_BSS);
+	CMD(auth, AUTHENTICATE);
+	CMD(assoc, ASSOCIATE);
+	CMD(deauth, DEAUTHENTICATE);
+	CMD(disassoc, DISASSOCIATE);
+
+#undef CMD
+	nla_nest_end(msg, nl_cmds);
+
 	return genlmsg_end(msg, hdr);
 
  nla_put_failure:
@@ -331,16 +366,26 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
 	int result = 0, rem_txq_params = 0;
 	struct nlattr *nl_txq_params;
 
-	rdev = cfg80211_get_dev_from_info(info);
-	if (IS_ERR(rdev))
-		return PTR_ERR(rdev);
+	rtnl_lock();
+
+	mutex_lock(&cfg80211_mutex);
 
-	if (info->attrs[NL80211_ATTR_WIPHY_NAME]) {
+	rdev = __cfg80211_drv_from_info(info);
+	if (IS_ERR(rdev)) {
+		result = PTR_ERR(rdev);
+		goto unlock;
+	}
+
+	mutex_lock(&rdev->mtx);
+
+	if (info->attrs[NL80211_ATTR_WIPHY_NAME])
 		result = cfg80211_dev_rename(
 			rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
-		if (result)
-			goto bad_res;
-	}
+
+	mutex_unlock(&cfg80211_mutex);
+
+	if (result)
+		goto bad_res;
 
 	if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
 		struct ieee80211_txq_params txq_params;
@@ -436,7 +481,9 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
 
 
  bad_res:
-	cfg80211_put_dev(rdev);
+	mutex_unlock(&rdev->mtx);
+ unlock:
+	rtnl_unlock();
 	return result;
 }
 
@@ -572,21 +619,31 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
 	enum nl80211_iftype type;
 	struct net_device *dev;
 	u32 _flags, *flags = NULL;
+	bool change = false;
 
 	memset(&params, 0, sizeof(params));
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
+
 	ifindex = dev->ifindex;
 	type = dev->ieee80211_ptr->iftype;
 	dev_put(dev);
 
-	err = -EINVAL;
 	if (info->attrs[NL80211_ATTR_IFTYPE]) {
-		type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
-		if (type > NL80211_IFTYPE_MAX)
+		enum nl80211_iftype ntype;
+
+		ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
+		if (type != ntype)
+			change = true;
+		type = ntype;
+		if (type > NL80211_IFTYPE_MAX) {
+			err = -EINVAL;
 			goto unlock;
+		}
 	}
 
 	if (!drv->ops->change_virtual_intf ||
@@ -602,6 +659,7 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
 		}
 		params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
 		params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+		change = true;
 	}
 
 	if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
@@ -611,20 +669,26 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
 		}
 		err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
 					  &_flags);
-		if (!err)
-			flags = &_flags;
+		if (err)
+			goto unlock;
+
+		flags = &_flags;
+		change = true;
 	}
-	rtnl_lock();
-	err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
-					    type, flags, &params);
+
+	if (change)
+		err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
+						    type, flags, &params);
+	else
+		err = 0;
 
 	dev = __dev_get_by_index(&init_net, ifindex);
 	WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type));
 
-	rtnl_unlock();
-
  unlock:
 	cfg80211_put_dev(drv);
+ unlock_rtnl:
+	rtnl_unlock();
 	return err;
 }
 
@@ -647,9 +711,13 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
 			return -EINVAL;
 	}
 
+	rtnl_lock();
+
 	drv = cfg80211_get_dev_from_info(info);
-	if (IS_ERR(drv))
-		return PTR_ERR(drv);
+	if (IS_ERR(drv)) {
+		err = PTR_ERR(drv);
+		goto unlock_rtnl;
+	}
 
 	if (!drv->ops->add_virtual_intf ||
 	    !(drv->wiphy.interface_modes & (1 << type))) {
@@ -663,18 +731,17 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
 		params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
 	}
 
-	rtnl_lock();
 	err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
 				  info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
 				  &flags);
 	err = drv->ops->add_virtual_intf(&drv->wiphy,
 		nla_data(info->attrs[NL80211_ATTR_IFNAME]),
 		type, err ? NULL : &flags, &params);
-	rtnl_unlock();
-
 
  unlock:
 	cfg80211_put_dev(drv);
+ unlock_rtnl:
+	rtnl_unlock();
 	return err;
 }
 
@@ -684,9 +751,11 @@ static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
 	int ifindex, err;
 	struct net_device *dev;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 	ifindex = dev->ifindex;
 	dev_put(dev);
 
@@ -695,12 +764,12 @@ static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
-	rtnl_lock();
 	err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
+ unlock_rtnl:
+	rtnl_unlock();
 	return err;
 }
 
@@ -752,9 +821,11 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_MAC])
 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 
 	if (!drv->ops->get_key) {
 		err = -EOPNOTSUPP;
@@ -782,10 +853,8 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
 	if (mac_addr)
 		NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
 
-	rtnl_lock();
 	err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
 				&cookie, get_key_callback);
-	rtnl_unlock();
 
 	if (err)
 		goto out;
@@ -803,6 +872,9 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -831,9 +903,11 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
 	    !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT])
 		return -EINVAL;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 
 	if (info->attrs[NL80211_ATTR_KEY_DEFAULT])
 		func = drv->ops->set_default_key;
@@ -845,13 +919,15 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
-	rtnl_lock();
 	err = func(&drv->wiphy, dev, key_idx);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -921,22 +997,25 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
 		return -EINVAL;
 	}
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 
 	if (!drv->ops->add_key) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
 	err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, &params);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -957,22 +1036,26 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_MAC])
 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 
 	if (!drv->ops->del_key) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
 	err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -986,9 +1069,16 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
 	struct beacon_parameters params;
 	int haveinfo = 0;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 
 	switch (info->genlhdr->cmd) {
 	case NL80211_CMD_NEW_BEACON:
@@ -1049,13 +1139,14 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
-	rtnl_lock();
 	err = call(&drv->wiphy, dev, &params);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1065,22 +1156,29 @@ static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
 	int err;
 	struct net_device *dev;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 
 	if (!drv->ops->del_beacon) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 	err = drv->ops->del_beacon(&drv->wiphy, dev);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1246,30 +1344,32 @@ static int nl80211_dump_station(struct sk_buff *skb,
 			return -EINVAL;
 	}
 
-	netdev = dev_get_by_index(&init_net, ifidx);
-	if (!netdev)
-		return -ENODEV;
+	rtnl_lock();
+
+	netdev = __dev_get_by_index(&init_net, ifidx);
+	if (!netdev) {
+		err = -ENODEV;
+		goto out_rtnl;
+	}
 
 	dev = cfg80211_get_dev_from_ifindex(ifidx);
 	if (IS_ERR(dev)) {
 		err = PTR_ERR(dev);
-		goto out_put_netdev;
+		goto out_rtnl;
 	}
 
 	if (!dev->ops->dump_station) {
-		err = -ENOSYS;
+		err = -EOPNOTSUPP;
 		goto out_err;
 	}
 
-	rtnl_lock();
-
 	while (1) {
 		err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
 					     mac_addr, &sinfo);
 		if (err == -ENOENT)
 			break;
 		if (err)
-			goto out_err_rtnl;
+			goto out_err;
 
 		if (nl80211_send_station(skb,
 				NETLINK_CB(cb->skb).pid,
@@ -1285,12 +1385,10 @@ static int nl80211_dump_station(struct sk_buff *skb,
  out:
 	cb->args[1] = sta_idx;
 	err = skb->len;
- out_err_rtnl:
-	rtnl_unlock();
  out_err:
 	cfg80211_put_dev(dev);
- out_put_netdev:
-	dev_put(netdev);
+ out_rtnl:
+	rtnl_unlock();
 
 	return err;
 }
@@ -1311,19 +1409,18 @@ static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
 
 	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->get_station) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
 	err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
-	rtnl_unlock();
-
 	if (err)
 		goto out;
 
@@ -1340,10 +1437,12 @@ static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
 
  out_free:
 	nlmsg_free(msg);
-
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1411,9 +1510,11 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
 		params.plink_action =
 		    nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
 	if (err)
@@ -1424,15 +1525,16 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
-	rtnl_lock();
 	err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, &params);
-	rtnl_unlock();
 
  out:
 	if (params.vlan)
 		dev_put(params.vlan);
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1474,9 +1576,11 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 				&params.station_flags))
 		return -EINVAL;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
 	if (err)
@@ -1487,15 +1591,21 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
-	rtnl_lock();
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
 	err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, &params);
-	rtnl_unlock();
 
  out:
 	if (params.vlan)
 		dev_put(params.vlan);
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1509,22 +1619,25 @@ static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_MAC])
 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->del_station) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
 	err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1605,22 +1718,29 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 			return -EINVAL;
 	}
 
-	netdev = dev_get_by_index(&init_net, ifidx);
-	if (!netdev)
-		return -ENODEV;
+	rtnl_lock();
+
+	netdev = __dev_get_by_index(&init_net, ifidx);
+	if (!netdev) {
+		err = -ENODEV;
+		goto out_rtnl;
+	}
 
 	dev = cfg80211_get_dev_from_ifindex(ifidx);
 	if (IS_ERR(dev)) {
 		err = PTR_ERR(dev);
-		goto out_put_netdev;
+		goto out_rtnl;
 	}
 
 	if (!dev->ops->dump_mpath) {
-		err = -ENOSYS;
+		err = -EOPNOTSUPP;
 		goto out_err;
 	}
 
-	rtnl_lock();
+	if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 
 	while (1) {
 		err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
@@ -1628,7 +1748,7 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 		if (err == -ENOENT)
 			break;
 		if (err)
-			goto out_err_rtnl;
+			goto out_err;
 
 		if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
 				       cb->nlh->nlmsg_seq, NLM_F_MULTI,
@@ -1643,12 +1763,10 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
  out:
 	cb->args[1] = path_idx;
 	err = skb->len;
- out_err_rtnl:
-	rtnl_unlock();
  out_err:
 	cfg80211_put_dev(dev);
- out_put_netdev:
-	dev_put(netdev);
+ out_rtnl:
+	rtnl_unlock();
 
 	return err;
 }
@@ -1670,19 +1788,23 @@ static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
 
 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->get_mpath) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
-	err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
-	rtnl_unlock();
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 
+	err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
 	if (err)
 		goto out;
 
@@ -1699,10 +1821,12 @@ static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
 
  out_free:
 	nlmsg_free(msg);
-
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1723,22 +1847,35 @@ static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
 	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->change_mpath) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
 	err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
@@ -1758,22 +1895,35 @@ static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
 	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->add_mpath) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
 	err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1787,22 +1937,25 @@ static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_MAC])
 		dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->del_mpath) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
 	err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1835,22 +1988,30 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
 			nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
 	}
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->change_bss) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
 	err = drv->ops->change_bss(&drv->wiphy, dev, &params);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1945,10 +2106,12 @@ static int nl80211_get_mesh_params(struct sk_buff *skb,
 	struct nlattr *pinfoattr;
 	struct sk_buff *msg;
 
+	rtnl_lock();
+
 	/* Look up our device */
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->get_mesh_params) {
 		err = -EOPNOTSUPP;
@@ -1956,9 +2119,7 @@ static int nl80211_get_mesh_params(struct sk_buff *skb,
 	}
 
 	/* Get the mesh params */
-	rtnl_lock();
 	err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
-	rtnl_unlock();
 	if (err)
 		goto out;
 
@@ -2007,13 +2168,16 @@ static int nl80211_get_mesh_params(struct sk_buff *skb,
 	err = genlmsg_unicast(msg, info->snd_pid);
 	goto out;
 
-nla_put_failure:
+ nla_put_failure:
 	genlmsg_cancel(msg, hdr);
 	err = -EMSGSIZE;
-out:
+ out:
 	/* Cleanup */
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -2060,9 +2224,11 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
 			parent_attr, nl80211_meshconf_params_policy))
 		return -EINVAL;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->set_mesh_params) {
 		err = -EOPNOTSUPP;
@@ -2109,14 +2275,15 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
 			nla_get_u16);
 
 	/* Apply changes */
-	rtnl_lock();
 	err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
-	rtnl_unlock();
 
  out:
 	/* cleanup */
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -2262,43 +2429,6 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
 	return -EINVAL;
 }
 
-static int nl80211_set_mgmt_extra_ie(struct sk_buff *skb,
-				     struct genl_info *info)
-{
-	struct cfg80211_registered_device *drv;
-	int err;
-	struct net_device *dev;
-	struct mgmt_extra_ie_params params;
-
-	memset(&params, 0, sizeof(params));
-
-	if (!info->attrs[NL80211_ATTR_MGMT_SUBTYPE])
-		return -EINVAL;
-	params.subtype = nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
-	if (params.subtype > 15)
-		return -EINVAL; /* FC Subtype field is 4 bits (0..15) */
-
-	if (info->attrs[NL80211_ATTR_IE]) {
-		params.ies = nla_data(info->attrs[NL80211_ATTR_IE]);
-		params.ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
-	}
-
-	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
-	if (err)
-		return err;
-
-	if (drv->ops->set_mgmt_extra_ie) {
-		rtnl_lock();
-		err = drv->ops->set_mgmt_extra_ie(&drv->wiphy, dev, &params);
-		rtnl_unlock();
-	} else
-		err = -EOPNOTSUPP;
-
-	cfg80211_put_dev(drv);
-	dev_put(dev);
-	return err;
-}
-
 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 {
 	struct cfg80211_registered_device *drv;
@@ -2312,9 +2442,11 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 	enum ieee80211_band band;
 	size_t ie_len;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	wiphy = &drv->wiphy;
 
@@ -2323,11 +2455,14 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
-	rtnl_lock();
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
 
 	if (drv->scan_req) {
 		err = -EBUSY;
-		goto out_unlock;
+		goto out;
 	}
 
 	if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
@@ -2335,7 +2470,7 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 			n_channels++;
 		if (!n_channels) {
 			err = -EINVAL;
-			goto out_unlock;
+			goto out;
 		}
 	} else {
 		for (band = 0; band < IEEE80211_NUM_BANDS; band++)
@@ -2349,7 +2484,7 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 
 	if (n_ssids > wiphy->max_scan_ssids) {
 		err = -EINVAL;
-		goto out_unlock;
+		goto out;
 	}
 
 	if (info->attrs[NL80211_ATTR_IE])
@@ -2363,7 +2498,7 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 			+ ie_len, GFP_KERNEL);
 	if (!request) {
 		err = -ENOMEM;
-		goto out_unlock;
+		goto out;
 	}
 
 	request->channels = (void *)((char *)request + sizeof(*request));
@@ -2434,11 +2569,12 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 		drv->scan_req = NULL;
 		kfree(request);
 	}
- out_unlock:
-	rtnl_unlock();
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -2558,6 +2694,288 @@ static int nl80211_dump_scan(struct sk_buff *skb,
 	return err;
 }
 
+static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
+{
+	return auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM ||
+		auth_type == NL80211_AUTHTYPE_SHARED_KEY ||
+		auth_type == NL80211_AUTHTYPE_FT ||
+		auth_type == NL80211_AUTHTYPE_NETWORK_EAP;
+}
+
+static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct net_device *dev;
+	struct cfg80211_auth_request req;
+	struct wiphy *wiphy;
+	int err;
+
+	rtnl_lock();
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		goto unlock_rtnl;
+
+	if (!drv->ops->auth) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
+	if (!info->attrs[NL80211_ATTR_MAC]) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	wiphy = &drv->wiphy;
+	memset(&req, 0, sizeof(req));
+
+	req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
+		req.chan = ieee80211_get_channel(
+			wiphy,
+			nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
+		if (!req.chan) {
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	if (info->attrs[NL80211_ATTR_SSID]) {
+		req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
+		req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
+	}
+
+	if (info->attrs[NL80211_ATTR_IE]) {
+		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	}
+
+	if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
+		req.auth_type =
+			nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
+		if (!nl80211_valid_auth_type(req.auth_type)) {
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	err = drv->ops->auth(&drv->wiphy, dev, &req);
+
+out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+unlock_rtnl:
+	rtnl_unlock();
+	return err;
+}
+
+static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct net_device *dev;
+	struct cfg80211_assoc_request req;
+	struct wiphy *wiphy;
+	int err;
+
+	rtnl_lock();
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		goto unlock_rtnl;
+
+	if (!drv->ops->assoc) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
+	if (!info->attrs[NL80211_ATTR_MAC] ||
+	    !info->attrs[NL80211_ATTR_SSID]) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	wiphy = &drv->wiphy;
+	memset(&req, 0, sizeof(req));
+
+	req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
+		req.chan = ieee80211_get_channel(
+			wiphy,
+			nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
+		if (!req.chan) {
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
+	req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
+
+	if (info->attrs[NL80211_ATTR_IE]) {
+		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	}
+
+	err = drv->ops->assoc(&drv->wiphy, dev, &req);
+
+out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+unlock_rtnl:
+	rtnl_unlock();
+	return err;
+}
+
+static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct net_device *dev;
+	struct cfg80211_deauth_request req;
+	struct wiphy *wiphy;
+	int err;
+
+	rtnl_lock();
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		goto unlock_rtnl;
+
+	if (!drv->ops->deauth) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
+	if (!info->attrs[NL80211_ATTR_MAC]) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	wiphy = &drv->wiphy;
+	memset(&req, 0, sizeof(req));
+
+	req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (info->attrs[NL80211_ATTR_REASON_CODE]) {
+		req.reason_code =
+			nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
+		if (req.reason_code == 0) {
+			/* Reason Code 0 is reserved */
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	if (info->attrs[NL80211_ATTR_IE]) {
+		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	}
+
+	err = drv->ops->deauth(&drv->wiphy, dev, &req);
+
+out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+unlock_rtnl:
+	rtnl_unlock();
+	return err;
+}
+
+static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct net_device *dev;
+	struct cfg80211_disassoc_request req;
+	struct wiphy *wiphy;
+	int err;
+
+	rtnl_lock();
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		goto unlock_rtnl;
+
+	if (!drv->ops->disassoc) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
+	if (!info->attrs[NL80211_ATTR_MAC]) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	wiphy = &drv->wiphy;
+	memset(&req, 0, sizeof(req));
+
+	req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (info->attrs[NL80211_ATTR_REASON_CODE]) {
+		req.reason_code =
+			nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
+		if (req.reason_code == 0) {
+			/* Reason Code 0 is reserved */
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	if (info->attrs[NL80211_ATTR_IE]) {
+		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	}
+
+	err = drv->ops->disassoc(&drv->wiphy, dev, &req);
+
+out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+unlock_rtnl:
+	rtnl_unlock();
+	return err;
+}
+
 static struct genl_ops nl80211_ops[] = {
 	{
 		.cmd = NL80211_CMD_GET_WIPHY,
@@ -2725,12 +3143,6 @@ static struct genl_ops nl80211_ops[] = {
 		.flags = GENL_ADMIN_PERM,
 	},
 	{
-		.cmd = NL80211_CMD_SET_MGMT_EXTRA_IE,
-		.doit = nl80211_set_mgmt_extra_ie,
-		.policy = nl80211_policy,
-		.flags = GENL_ADMIN_PERM,
-	},
-	{
 		.cmd = NL80211_CMD_TRIGGER_SCAN,
 		.doit = nl80211_trigger_scan,
 		.policy = nl80211_policy,
@@ -2741,6 +3153,33 @@ static struct genl_ops nl80211_ops[] = {
 		.policy = nl80211_policy,
 		.dumpit = nl80211_dump_scan,
 	},
+	{
+		.cmd = NL80211_CMD_AUTHENTICATE,
+		.doit = nl80211_authenticate,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_ASSOCIATE,
+		.doit = nl80211_associate,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_DEAUTHENTICATE,
+		.doit = nl80211_deauthenticate,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_DISASSOCIATE,
+		.doit = nl80211_disassociate,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+};
+static struct genl_multicast_group nl80211_mlme_mcgrp = {
+	.name = "mlme",
 };
 
 /* multicast groups */
@@ -2887,6 +3326,71 @@ nla_put_failure:
 	nlmsg_free(msg);
 }
 
+static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
+				    struct net_device *netdev,
+				    const u8 *buf, size_t len,
+				    enum nl80211_commands cmd)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		return;
+
+	hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
+	if (!hdr) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+	NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
+
+	if (genlmsg_end(msg, hdr) < 0) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_KERNEL);
+	return;
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	nlmsg_free(msg);
+}
+
+void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
+			  struct net_device *netdev, const u8 *buf, size_t len)
+{
+	nl80211_send_mlme_event(rdev, netdev, buf, len,
+				NL80211_CMD_AUTHENTICATE);
+}
+
+void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
+			   struct net_device *netdev, const u8 *buf,
+			   size_t len)
+{
+	nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE);
+}
+
+void nl80211_send_rx_deauth(struct cfg80211_registered_device *rdev,
+			    struct net_device *netdev, const u8 *buf,
+			    size_t len)
+{
+	nl80211_send_mlme_event(rdev, netdev, buf, len,
+				NL80211_CMD_DEAUTHENTICATE);
+}
+
+void nl80211_send_rx_disassoc(struct cfg80211_registered_device *rdev,
+			      struct net_device *netdev, const u8 *buf,
+			      size_t len)
+{
+	nl80211_send_mlme_event(rdev, netdev, buf, len,
+				NL80211_CMD_DISASSOCIATE);
+}
+
 /* initialisation/exit functions */
 
 int nl80211_init(void)
@@ -2915,6 +3419,10 @@ int nl80211_init(void)
 	if (err)
 		goto err_out;
 
+	err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
+	if (err)
+		goto err_out;
+
 	return 0;
  err_out:
 	genl_unregister_family(&nl80211_fam);