1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh 5 6ERR_CODE=0 7 8_prep_test "null" "check dma & segment limits for zero copy" 9 10dev_id=$(_add_ublk_dev -t null -z) 11_check_add_dev $TID $? 12 13sysfs_path=/sys/block/ublkb"${dev_id}" 14dma_align=$(cat "$sysfs_path"/queue/dma_alignment) 15max_segments=$(cat "$sysfs_path"/queue/max_segments) 16max_segment_size=$(cat "$sysfs_path"/queue/max_segment_size) 17if [ "$dma_align" != "4095" ]; then 18 ERR_CODE=255 19fi 20if [ "$max_segments" != "32" ]; then 21 ERR_CODE=255 22fi 23if [ "$max_segment_size" != "32768" ]; then 24 ERR_CODE=255 25fi 26_cleanup_test "null" 27_show_result $TID $ERR_CODE 28