[patch net-next 03/23] mlxsw: spectrum: Forbid LAG slave from having VLAN uppers

[Jiri Pirko]

From: Ido Schimmel <ido...@mellanox.com>

When a port netdev is put under LAG it cannot have VLAN upper devices,
so forbid that. The LAG device itself can have VLAN upper devices.

Signed-off-by: Ido Schimmel <ido...@mellanox.com>
Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index b47e3fb..46c867f 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3038,7 +3038,7 @@ static int mlxsw_sp_netdevice_port_upper_event(struct 
net_device *dev,
                    !netif_is_lag_master(upper_dev) &&
                    !netif_is_bridge_master(upper_dev))
                        return -EINVAL;
-               if (!info->master || !info->linking)
+               if (!info->linking)
                        break;
                /* HW limitation forbids to put ports to multiple bridges. */
                if (netif_is_bridge_master(upper_dev) &&
@@ -3048,6 +3048,11 @@ static int mlxsw_sp_netdevice_port_upper_event(struct 
net_device *dev,
                    !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
                                               info->upper_info))
                        return -EINVAL;
+               if (netif_is_lag_master(upper_dev) && vlan_uses_dev(dev))
+                       return -EINVAL;
+               if (netif_is_lag_port(dev) && is_vlan_dev(upper_dev) &&
+                   !netif_is_lag_master(vlan_dev_real_dev(upper_dev)))
+                       return -EINVAL;
                break;
        case NETDEV_CHANGEUPPER:
                upper_dev = info->upper_dev;
-- 
2.5.5