blktests: add userspace IO test

Add one test to cover changes on block passthrough IO interface,
such as blk_rq_map_user(), blk_rq_map_user_iov(), blk_rq_unmap_user()
and blk_rq_map_kern().

Signed-off-by: Ming Lei <ming.lei@redhat.com>

diff --git a/tests/nvme/029 b/tests/nvme/029
new file mode 100755 (executable)
index 0000000..e63dfc1
--- /dev/null
+++ b/tests/nvme/029
@@ -0,0 +1,99 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+# Copyright (c) 2019 Ming Lei <ming.lei@redhat.com>
+#
+# Test userspace IO on NVMe loop device. Regression test for patch "block: fix
+# segment calculation for passthrough IO".
+
+. tests/nvme/rc
+
+DESCRIPTION="test userspace IO via nvme-cli read/write interface"
+QUICK=1
+
+requires() {
+       _have_program nvme && _have_modules loop nvme-loop nvmet && \
+               _have_configfs
+}
+
+test_user_io()
+{
+       local disk="$1"
+       local start=$2
+       local cnt=$3
+       local bs, size, img, img1
+
+       bs="$(blockdev --getss "$disk")"
+       size=$((cnt * bs))
+       img="$(mktemp /tmp/blk_img_XXXXXX)"
+       img1="$(mktemp /tmp/blk_img_XXXXXX)"
+
+       dd if=/dev/urandom of="$img" bs="$bs" count="$cnt" status=none
+
+       ((cnt--))
+
+       if ! nvme write --start-block="$start" --block-count="$cnt" \
+               --data-size="$size" --data="$img" "$disk"; then
+               return 1
+       fi
+       if ! nvme read --start-block="$start" --block-count="$cnt" \
+               --data-size="$size" --data="$img1" "$disk"; then
+               return 1
+       fi
+
+       diff -q -u "$img" "$img1"
+       local res=$?
+
+       rm -f "$img" "$img1"
+       return $res
+}
+
+test() {
+       echo "Running ${TEST_NAME}"
+
+       modprobe nvmet
+       modprobe nvme-loop
+
+       local port
+       local nvmedev
+       local loop_dev
+       local file_path="$TMPDIR/img"
+       local subsys_name="blktests-subsystem-1"
+
+       truncate -s 1G "${file_path}"
+
+       loop_dev="$(losetup -f --show "${file_path}")"
+
+       _create_nvmet_subsystem "${subsys_name}" "${loop_dev}" \
+                "91fdba0d-f87b-4c25-b80f-db7be1418b9e"
+       port="$(_create_nvmet_port "loop")"
+       _add_nvmet_subsys_to_port "${port}" "${subsys_name}"
+
+       nvme connect -t loop -n "${subsys_name}"
+
+       nvmedev="$(_find_nvme_loop_dev)"
+       cat "/sys/block/${nvmedev}n1/uuid"
+       cat "/sys/block/${nvmedev}n1/wwid"
+
+       local dev="/dev/${nvmedev}n1"
+       test_user_io "$dev" 1 512 > "$FULL" 2>&1 || echo FAIL
+       test_user_io "$dev" 1 511 > "$FULL" 2>&1 || echo FAIL
+       test_user_io "$dev" 1 513 > "$FULL" 2>&1 || echo FAIL
+       test_user_io "$dev" 511 1024 > "$FULL" 2>&1 || echo FAIL
+       test_user_io "$dev" 511 1023 > "$FULL" 2>&1 || echo FAIL
+       test_user_io "$dev" 511 1025 > "$FULL" 2>&1 || echo FAIL
+
+       nvme disconnect -n "${subsys_name}" >> "$FULL" 2>&1
+
+       _remove_nvmet_subsystem_from_port "${port}" "${subsys_name}"
+       _remove_nvmet_subsystem "${subsys_name}"
+       _remove_nvmet_port "${port}"
+
+       losetup -d "${loop_dev}"
+
+       rm "${file_path}"
+
+       modprobe -r nvme-loop
+       modprobe -r nvmet
+
+       echo "Test complete"
+}

diff --git a/tests/nvme/029.out b/tests/nvme/029.out
new file mode 100644 (file)
index 0000000..0021003
--- /dev/null
+++ b/tests/nvme/029.out
@@ -0,0 +1,4 @@
+Running nvme/029
+91fdba0d-f87b-4c25-b80f-db7be1418b9e
+uuid.91fdba0d-f87b-4c25-b80f-db7be1418b9e
+Test complete