__mlxsw_item_data
char *storage_data = __mlxsw_item_data(storage, storage_item, 0);
char *output_data = __mlxsw_item_data(output, output_item, 0);
return __mlxsw_item_data(buf, &__ITEM_NAME(_type, _cname, _iname), 0); \
return __mlxsw_item_data(buf, \