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| author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2015-04-02 17:07:11 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-04-02 14:05:01 -0400 |
| commit | a45253bf32bf49cdb2807bad212b84f5ab51ac26 (patch) | |
| tree | ae8db8c41d5950644db9d4f5e609f228df958e57 /drivers/net/veth.c | |
| parent | e1622baf54df8cc958bf29d71de5ad545ea7d93c (diff) | |
| download | lwn-a45253bf32bf49cdb2807bad212b84f5ab51ac26.tar.gz lwn-a45253bf32bf49cdb2807bad212b84f5ab51ac26.zip | |
veth: set iflink to the peer veth
Now that the peer netns is advertised in rtnl messages, we can set this property
so that IFLA_LINK will advertise the peer ifindex. It allows the userland to get
the full veth configuration.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/veth.c')
| -rw-r--r-- | drivers/net/veth.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 4cca36ebc4fb..c8186ffda1a3 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -263,6 +263,20 @@ static void veth_poll_controller(struct net_device *dev) } #endif /* CONFIG_NET_POLL_CONTROLLER */ +static int veth_get_iflink(const struct net_device *dev) +{ + struct veth_priv *priv = netdev_priv(dev); + struct net_device *peer; + int iflink; + + rcu_read_lock(); + peer = rcu_dereference(priv->peer); + iflink = peer ? peer->ifindex : 0; + rcu_read_unlock(); + + return iflink; +} + static const struct net_device_ops veth_netdev_ops = { .ndo_init = veth_dev_init, .ndo_open = veth_open, @@ -275,6 +289,7 @@ static const struct net_device_ops veth_netdev_ops = { #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = veth_poll_controller, #endif + .ndo_get_iflink = veth_get_iflink, }; #define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ |