static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
{
int ret;
/* register the packet handler for slave ports */
ret = netdev_rx_handler_register(port_dev, vrf_handle_frame, dev);
if (ret) {
netdev_err(port_dev,
"Device %s failed to register rx_handler\n",
port_dev->name);
goto out_fail;
}
ret = netdev_master_upper_dev_link(port_dev, dev, NULL, NULL);
if (ret < 0)
goto out_unregister;
port_dev->priv_flags |= IFF_L3MDEV_SLAVE;
cycle_netdev(port_dev);
return 0;
out_unregister:
netdev_rx_handler_unregister(port_dev);
out_fail:
return ret;
}
static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev,
struct netlink_ext_ack *extack)
{
int ret;
/* 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) {
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);
if (ret < 0)
goto err;
cycle_netdev(port_dev);
return 0;
err:
port_dev->priv_flags &= ~IFF_L3MDEV_SLAVE;
return ret;
}
/* inverse of do_vrf_add_slave */
static int do_vrf_del_slave(struct net_device *dev, struct net_device *port_dev)
{
netdev_upper_dev_unlink(port_dev, dev);
port_dev->priv_flags &= ~IFF_L3MDEV_SLAVE;
cycle_netdev(port_dev);
return 0;
}
static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
{
int ret;
ret = netdev_master_upper_dev_link(port_dev, dev, NULL, NULL);
if (ret < 0)
return ret;
port_dev->priv_flags |= IFF_L3MDEV_SLAVE;
cycle_netdev(port_dev);
return 0;
}
/* inverse of do_vrf_add_slave */
static int do_vrf_del_slave(struct net_device *dev, struct net_device *port_dev)
{
struct net_vrf *vrf = netdev_priv(dev);
struct slave_queue *queue = &vrf->queue;
struct slave *slave;
netdev_upper_dev_unlink(port_dev, dev);
port_dev->priv_flags &= ~IFF_L3MDEV_SLAVE;
netdev_rx_handler_unregister(port_dev);
cycle_netdev(port_dev);
slave = __vrf_find_slave_dev(queue, port_dev);
if (slave)
__vrf_remove_slave(queue, slave);
kfree(slave);
return 0;
}
static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
{
struct slave *slave = kzalloc(sizeof(*slave), GFP_KERNEL);
struct net_vrf *vrf = netdev_priv(dev);
struct slave_queue *queue = &vrf->queue;
int ret = -ENOMEM;
if (!slave)
goto out_fail;
slave->dev = port_dev;
/* register the packet handler for slave ports */
ret = netdev_rx_handler_register(port_dev, vrf_handle_frame, dev);
if (ret) {
netdev_err(port_dev,
"Device %s failed to register rx_handler\n",
port_dev->name);
goto out_fail;
}
ret = netdev_master_upper_dev_link(port_dev, dev);
if (ret < 0)
goto out_unregister;
port_dev->priv_flags |= IFF_L3MDEV_SLAVE;
__vrf_insert_slave(queue, slave);
cycle_netdev(port_dev);
return 0;
out_unregister:
netdev_rx_handler_unregister(port_dev);
out_fail:
kfree(slave);
return ret;
}
