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net: vrf: Add extack messages for enslave errors

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Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2017-10-04 17:48:48 -07:00 committed by David S. Miller
parent 42ab19ee90
commit de3baa3ed7
1 changed files with 11 additions and 2 deletions
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13
drivers/net/vrf.c
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@ -772,8 +772,11 @@ static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev,
/* do not allow loopback device to be enslaved to a VRF.
* The vrf device acts as the loopback for the vrf.
*/
if (port_dev == dev_net(dev)->loopback_dev)
if (port_dev == dev_net(dev)->loopback_dev) {
NL_SET_ERR_MSG(extack,
"Can not enslave loopback device to a VRF");
return -EOPNOTSUPP;
}
port_dev->priv_flags |= IFF_L3MDEV_SLAVE;
ret = netdev_master_upper_dev_link(port_dev, dev, NULL, NULL, extack);
@ -792,7 +795,13 @@ static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev,
static int vrf_add_slave(struct net_device *dev, struct net_device *port_dev,
struct netlink_ext_ack *extack)
{
if (netif_is_l3_master(port_dev) || netif_is_l3_slave(port_dev))
if (netif_is_l3_master(port_dev)) {
NL_SET_ERR_MSG(extack,
"Can not enslave an L3 master device to a VRF");
return -EINVAL;
}
if (netif_is_l3_slave(port_dev))
return -EINVAL;
return do_vrf_add_slave(dev, port_dev, extack);