net/mlx5: E-switch, Introduce flag to indicate if vport acl namespace is created

Eswitch vport acl namespace is needed when loading vfs. There is
no need to free and reallocate it when switching eswitch mode.
Introduce flag to indicate if it is created or not. When needed,
create it. Only free it when the driver is unloaded or in bare
metal mode.
Signed-off-by: Chris Mi <cmi@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/eswitch.c

@@ -1186,6 +1186,9 @@ static int mlx5_esw_acls_ns_init(struct mlx5_eswitch *esw)
 	int total_vports;
 	int err;
 
+	if (esw->flags & MLX5_ESWITCH_VPORT_ACL_NS_CREATED)
+		return 0;
+
 	total_vports = mlx5_eswitch_get_total_vports(dev);
 
 	if (MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support)) {
@@ -1203,6 +1206,7 @@ static int mlx5_esw_acls_ns_init(struct mlx5_eswitch *esw)
 	} else {
 		esw_warn(dev, "ingress ACL is not supported by FW\n");
 	}
+	esw->flags |= MLX5_ESWITCH_VPORT_ACL_NS_CREATED;
 	return 0;
 
 err:
@@ -1215,6 +1219,7 @@ static void mlx5_esw_acls_ns_cleanup(struct mlx5_eswitch *esw)
 {
 	struct mlx5_core_dev *dev = esw->dev;
 
+	esw->flags &= ~MLX5_ESWITCH_VPORT_ACL_NS_CREATED;
 	if (MLX5_CAP_ESW_INGRESS_ACL(dev, ft_support))
 		mlx5_fs_ingress_acls_cleanup(dev);
 	if (MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support))

drivers/net/ethernet/mellanox/mlx5/core/eswitch.h

@@ -282,6 +282,7 @@ struct mlx5_esw_functions {
 enum {
 	MLX5_ESWITCH_VPORT_MATCH_METADATA = BIT(0),
 	MLX5_ESWITCH_REG_C1_LOOPBACK_ENABLED = BIT(1),
+	MLX5_ESWITCH_VPORT_ACL_NS_CREATED = BIT(2),
 };
 
 struct mlx5_esw_bridge_offloads;