[GRE]: Allow to create IPGRE tunnels in net namespaces.

I.e. set the proper net and mark as NETNS_LOCAL.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index aa973812edc1..7ff52628a73f 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -278,6 +278,8 @@ static struct ip_tunnel * ipgre_tunnel_locate(struct net *net,
         if (!dev)
           return NULL;
 
+        dev_net_set(dev, net);
+
         if (strchr(name, '%')) {
                 if (dev_alloc_name(dev, name) < 0)
                         goto failed_free;
@@ -1236,6 +1238,7 @@ static void ipgre_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 ipgre_tunnel_init(struct net_device *dev)