tunnels: advertise link netns via netlink

Implement rtnl_link_ops->get_link_net() callback so that IFLA_LINK_NETNSID is
added to rtnetlink messages.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index c5f79e7513a6..0346eaa6d236 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2923,6 +2923,13 @@ nla_put_failure:
         return -EMSGSIZE;
 }
 
+static struct net *vxlan_get_link_net(const struct net_device *dev)
+{
+        struct vxlan_dev *vxlan = netdev_priv(dev);
+
+        return vxlan->net;
+}
+
 static struct rtnl_link_ops vxlan_link_ops __read_mostly = {
         .kind           = "vxlan",
         .maxtype        = IFLA_VXLAN_MAX,
@@ -2934,6 +2941,7 @@ static struct rtnl_link_ops vxlan_link_ops __read_mostly = {
         .dellink        = vxlan_dellink,
         .get_size       = vxlan_get_size,
         .fill_info      = vxlan_fill_info,
+        .get_link_net   = vxlan_get_link_net,
 };
 
 static void vxlan_handle_lowerdev_unregister(struct vxlan_net *vn,