From 59fe9b3f842751688d9ee180f673314190813be1 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Mon, 20 Jun 2016 23:04:00 +0200 Subject: [PATCH] mlxsw: spectrum: Sanitize port netdev upper devices 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 Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 3d570086527e..b47e3fb48bf7 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -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; }