[IPIP]: Allow to create IPIP tunnels in net namespaces.

Set the proper net before calling register_netdev and disable
the tunnel device netns changing.

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

diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 1de39e1..149111f 100644 (file)
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -239,6 +239,8 @@ static struct ip_tunnel * ipip_tunnel_locate(struct net *net,
        if (dev == NULL)
                return NULL;
 
+       dev_net_set(dev, net);
+
        if (strchr(name, '%')) {
                if (dev_alloc_name(dev, name) < 0)
                        goto failed_free;
@@ -839,6 +841,7 @@ static void ipip_tunnel_setup(struct net_device *dev)
        dev->flags              = IFF_NOARP;
        dev->iflink             = 0;
        dev->addr_len           = 4;
+       dev->features           |= NETIF_F_NETNS_LOCAL;
 }
 
 static int ipip_tunnel_init(struct net_device *dev)