mlxsw: spectrum_router: Flood packets to router after RIF creation

If a packet ingress the router but can't be assigned an ingress RIF,
it's dropped.

Therefore, in the case of RIF configured on top of a bridge, it makes
sense to start flooding broadcast packets to the router only after the
RIF was created.

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>

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 41c85dc..32bf658 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -3353,10 +3353,6 @@ static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp,
        if (IS_ERR(vr))
                return PTR_ERR(vr);
 
-       err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true);
-       if (err)
-               goto err_port_flood_set;
-
        rif = mlxsw_sp_rif_alloc(rif_index, vr->id, l3_dev, f, false);
        if (!rif) {
                err = -ENOMEM;
@@ -3367,6 +3363,10 @@ static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp,
        if (err)
                goto err_rif_bridge_op;
 
+       err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true);
+       if (err)
+               goto err_port_flood_set;
+
        err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true);
        if (err)
                goto err_rif_fdb_op;
@@ -3380,12 +3380,12 @@ static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp,
        return 0;
 
 err_rif_fdb_op:
+       mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
+err_port_flood_set:
        mlxsw_sp_rif_bridge_op(mlxsw_sp, rif, false);
 err_rif_bridge_op:
        kfree(rif);
 err_rif_alloc:
-       mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
-err_port_flood_set:
        mlxsw_sp_vr_put(vr);
        return err;
 }
@@ -3406,12 +3406,12 @@ void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp,
 
        mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false);
 
+       mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
+
        mlxsw_sp_rif_bridge_op(mlxsw_sp, rif, false);
 
        kfree(rif);
 
-       mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
-
        mlxsw_sp_vr_put(vr);
 
        netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif_index);