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c78ae7b71e
ublk zero copy usually requires to set dma and segment parameter correctly, so hard-code null target's dma & segment parameter in non-default value, and verify if they are setup correctly by ublk driver. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250327095123.179113-12-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
28 lines
670 B
Bash
Executable file
28 lines
670 B
Bash
Executable file
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh
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TID="generic_03"
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ERR_CODE=0
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_prep_test "null" "check dma & segment limits for zero copy"
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dev_id=$(_add_ublk_dev -t null -z)
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_check_add_dev $TID $?
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sysfs_path=/sys/block/ublkb"${dev_id}"
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dma_align=$(cat "$sysfs_path"/queue/dma_alignment)
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max_segments=$(cat "$sysfs_path"/queue/max_segments)
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max_segment_size=$(cat "$sysfs_path"/queue/max_segment_size)
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if [ "$dma_align" != "4095" ]; then
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ERR_CODE=255
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fi
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if [ "$max_segments" != "32" ]; then
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ERR_CODE=255
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fi
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if [ "$max_segment_size" != "32768" ]; then
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ERR_CODE=255
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fi
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_cleanup_test "null"
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_show_result $TID $ERR_CODE
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