From 99b14df4fcbb6ae27fe4875b7b63482679cb5d0f Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@redhat.com>
Date: Tue, 5 Mar 2019 09:50:26 +0800
Subject: [PATCH] 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>
---
 tests/nvme/029     | 99 ++++++++++++++++++++++++++++++++++++++++++++++
 tests/nvme/029.out |  4 ++
 2 files changed, 103 insertions(+)
 create mode 100755 tests/nvme/029
 create mode 100644 tests/nvme/029.out

diff --git a/tests/nvme/029 b/tests/nvme/029
new file mode 100755
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
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
-- 
2.50.1