[PATCH blktests v3 2/2] nvme/049: add test for uring-passthrough

[Kanchan Joshi]

User can communicate to NVMe char device (/dev/ngXnY) using the
uring-passthrough interface. This test exercises some of these
communication pathways, using the 'io_uring_cmd' ioengine of fio.

Signed-off-by: Kanchan Joshi <joshi.k at samsung.com>
---
 tests/nvme/049     | 54 ++++++++++++++++++++++++++++++++++++++++++++++
 tests/nvme/049.out |  2 ++
 2 files changed, 56 insertions(+)
 create mode 100755 tests/nvme/049
 create mode 100644 tests/nvme/049.out

diff --git a/tests/nvme/049 b/tests/nvme/049
new file mode 100755
index 0000000..f72862c
--- /dev/null
+++ b/tests/nvme/049
@@ -0,0 +1,54 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
+# Copyright (C) 2023 Kanchan Joshi, Samsung Electronics
+# Test exercising uring passthrough IO on nvme char device
+
+. tests/nvme/rc
+
+DESCRIPTION="basic test for uring-passthrough I/O on /dev/ngX"
+QUICK=1
+
+requires() {
+	_nvme_requires
+	_have_kernel_option IO_URING
+	_have_kver 6 1
+	_have_fio_ver 3 33
+}
+
+test_device() {
+	echo "Running ${TEST_NAME}"
+	local ngdev=${TEST_DEV/nvme/ng}
+	local common_args=(
+		--size=1M
+		--filename="$ngdev"
+		--bs=4k
+		--rw=randread
+		--numjobs=1
+		--iodepth=16
+		--name=randread
+		--ioengine=io_uring_cmd
+		--cmd_type=nvme
+		--time_based
+		--runtime=2
+	)
+	local fio_output
+
+	# check security permission
+	if ! fio_output=$(fio --name=check --size=4k --filename="$ngdev" \
+			    --rw=read --ioengine=io_uring_cmd 2>&1) &&
+			grep -qe "Permission denied" <<< "$fio_output"; then
+		SKIP_REASONS+=("IORING_OP_URING_CMD is not allowed for $ngdev")
+		return
+	fi
+
+	#plain read test
+	_run_fio "${common_args[@]}"
+
+	#read with iopoll
+	_run_fio "${common_args[@]}" --hipri
+
+	#read with fixedbufs
+	_run_fio "${common_args[@]}" --fixedbufs
+
+	echo "Test complete"
+}
diff --git a/tests/nvme/049.out b/tests/nvme/049.out
new file mode 100644
index 0000000..c172030
--- /dev/null
+++ b/tests/nvme/049.out
@@ -0,0 +1,2 @@
+Running nvme/049
+Test complete
-- 
2.25.1