veth: advertise link netns via netlink

Assign 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, 9 insertions, 0 deletions

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 8ad596573d17..4cca36ebc4fb 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -469,6 +469,14 @@ static const struct nla_policy veth_policy[VETH_INFO_MAX + 1] = {
         [VETH_INFO_PEER]        = { .len = sizeof(struct ifinfomsg) },
 };
 
+static struct net *veth_get_link_net(const struct net_device *dev)
+{
+        struct veth_priv *priv = netdev_priv(dev);
+        struct net_device *peer = rtnl_dereference(priv->peer);
+
+        return peer ? dev_net(peer) : dev_net(dev);
+}
+
 static struct rtnl_link_ops veth_link_ops = {
         .kind           = DRV_NAME,
         .priv_size      = sizeof(struct veth_priv),
@@ -478,6 +486,7 @@ static struct rtnl_link_ops veth_link_ops = {
         .dellink        = veth_dellink,
         .policy         = veth_policy,
         .maxtype        = VETH_INFO_MAX,
+        .get_link_net   = veth_get_link_net,
 };
 
 /*