check_DELETE_FIELD(const struct ofpact_delete_field *odf,
                         struct ofpact_check_params *cp OVS_UNUSED)
{
    if (odf->field->id < MFF_TUN_METADATA0 ||
        odf->field->id > MFF_TUN_METADATA63) {
        return OFPERR_OFPBAC_BAD_ARGUMENT;
    }
    return 0;
}
check_DELETE_FIELD(const struct ofpact_delete_field *odf,
                         struct ofpact_check_params *cp OVS_UNUSED)
{
    if (odf->field->id < MFF_TUN_METADATA0 ||
        odf->field->id > MFF_TUN_METADATA63) {
        return OFPERR_OFPBAC_BAD_ARGUMENT;
    }
    return 0;
}