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mlxsw: spectrum: Sanitize port netdev upper devices

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We currently only support the following upper devices for port netdevs:
1) Bridge
2) LAG (bond / team)
3) VLAN

Any other device is forbidden, so return an error.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2016-06-20 23:04:00 +02:00 committed by David S. Miller
parent 80bedf1a62
commit 59fe9b3f84
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
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@ -3034,6 +3034,10 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
switch (event) {
case NETDEV_PRECHANGEUPPER:
upper_dev = info->upper_dev;
if (!is_vlan_dev(upper_dev) &&
!netif_is_lag_master(upper_dev) &&
!netif_is_bridge_master(upper_dev))
return -EINVAL;
if (!info->master || !info->linking)
break;
/* HW limitation forbids to put ports to multiple bridges. */
@ -3070,6 +3074,9 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
else
err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
upper_dev);
} else {
err = -EINVAL;
WARN_ON(1);
}
break;
}