flow_offload: introduce "disabled" HW stats type and allow it in mlxsw

Introduce new type for disabled HW stats and allow the value in
mlxsw offload.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c

@@ -36,7 +36,7 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
 		err = mlxsw_sp_acl_rulei_act_count(mlxsw_sp, rulei, extack);
 		if (err)
 			return err;
-	} else {
+	} else if (act->hw_stats_type != FLOW_ACTION_HW_STATS_TYPE_DISABLED) {
 		NL_SET_ERR_MSG_MOD(extack, "Unsupported action HW stats type");
 		return -EOPNOTSUPP;
 	}

include/net/flow_offload.h

@@ -159,6 +159,7 @@ enum flow_action_mangle_base {
 #define FLOW_ACTION_HW_STATS_TYPE_DELAYED BIT(1)
 #define FLOW_ACTION_HW_STATS_TYPE_ANY (FLOW_ACTION_HW_STATS_TYPE_IMMEDIATE | \
 				       FLOW_ACTION_HW_STATS_TYPE_DELAYED)
+#define FLOW_ACTION_HW_STATS_TYPE_DISABLED 0
 
 typedef void (*action_destr)(void *priv);