[VLAN]: Allow vlan devices registration in net namespaces.

This one is similar to what I've done for TUN - set the proper
net after device allocation and clean VLANs on net exit (use the
rtnl_kill_links helper finally).

Plus, drop explicit init_net usage and net != &init_net checks.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 5cacad0..7e9d22e 100644 (file)
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -340,6 +340,7 @@ static int register_vlan_device(struct net_device *real_dev,
        if (new_dev == NULL)
                return -ENOBUFS;
 
+       dev_net_set(new_dev, net);
        /* need 4 bytes for extra VLAN header info,
         * hope the underlying device can handle it.
         */
@@ -406,9 +407,6 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
        int i, flgs;
        struct net_device *vlandev;
 
-       if (dev_net(dev) != &init_net)
-               return NOTIFY_DONE;
-
        if (is_vlan_dev(dev)) {
                __vlan_device_event(dev, event);
                goto out;
@@ -534,7 +532,7 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg)
        case GET_VLAN_REALDEV_NAME_CMD:
        case GET_VLAN_VID_CMD:
                err = -ENODEV;
-               dev = __dev_get_by_name(&init_net, args.device1);
+               dev = __dev_get_by_name(net, args.device1);
                if (!dev)
                        goto out;
 
@@ -665,6 +663,7 @@ static void vlan_exit_net(struct net *net)
        struct vlan_net *vn;
 
        vn = net_generic(net, vlan_net_id);
+       rtnl_kill_links(net, &vlan_link_ops);
        vlan_proc_cleanup(net);
        kfree(vn);
 }

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 4ae0d7e..c961f08 100644 (file)
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -153,9 +153,6 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
        struct net_device_stats *stats;
        unsigned short vlan_TCI;
 
-       if (dev_net(dev) != &init_net)
-               goto err_free;
-
        skb = skb_share_check(skb, GFP_ATOMIC);
        if (skb == NULL)
                goto err_free;

diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
index e32eeb3..c93e69e 100644 (file)
--- a/net/8021q/vlan_netlink.c
+++ b/net/8021q/vlan_netlink.c
@@ -113,7 +113,7 @@ static int vlan_newlink(struct net_device *dev,
 
        if (!tb[IFLA_LINK])
                return -EINVAL;
-       real_dev = __dev_get_by_index(&init_net, nla_get_u32(tb[IFLA_LINK]));
+       real_dev = __dev_get_by_index(dev_net(dev), nla_get_u32(tb[IFLA_LINK]));
        if (!real_dev)
                return -ENODEV;