drivers/scsi/scsi_proto_test.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright 2023 Google LLC
 */
#include <kunit/test.h>
#include <linux/unaligned.h>
#include <scsi/scsi_proto.h>

static void test_scsi_proto(struct kunit *test)
{
	static const union {
		struct scsi_io_group_descriptor desc;
		u8 arr[sizeof(struct scsi_io_group_descriptor)];
	} d = { .arr = { 0x45, 0, 0, 0, 0xb0, 0xe4, 0xe3 } };
	KUNIT_EXPECT_EQ(test, d.desc.io_advice_hints_mode + 0, 1);
	KUNIT_EXPECT_EQ(test, d.desc.st_enble + 0, 1);
	KUNIT_EXPECT_EQ(test, d.desc.cs_enble + 0, 0);
	KUNIT_EXPECT_EQ(test, d.desc.ic_enable + 0, 1);
	KUNIT_EXPECT_EQ(test, d.desc.acdlu + 0, 1);
	KUNIT_EXPECT_EQ(test, d.desc.rlbsr + 0, 3);
	KUNIT_EXPECT_EQ(test, d.desc.lbm_descriptor_type + 0, 0);
	KUNIT_EXPECT_EQ(test, d.desc.params[0] + 0, 0xe4);
	KUNIT_EXPECT_EQ(test, d.desc.params[1] + 0, 0xe3);

	static const union {
		struct scsi_stream_status s;
		u8 arr[sizeof(struct scsi_stream_status)];
	} ss = { .arr = { 0x80, 0, 0x12, 0x34, 0x3f } };
	KUNIT_EXPECT_EQ(test, ss.s.perm + 0, 1);
	KUNIT_EXPECT_EQ(test, get_unaligned_be16(&ss.s.stream_identifier),
			0x1234);
	KUNIT_EXPECT_EQ(test, ss.s.rel_lifetime + 0, 0x3f);

	static const union {
		struct scsi_stream_status_header h;
		u8 arr[sizeof(struct scsi_stream_status_header)];
	} sh = { .arr = { 1, 2, 3, 4, 0, 0, 5, 6 } };
	KUNIT_EXPECT_EQ(test, get_unaligned_be32(&sh.h.len), 0x1020304);
	KUNIT_EXPECT_EQ(test, get_unaligned_be16(&sh.h.number_of_open_streams),
			0x506);
}

static struct kunit_case scsi_proto_test_cases[] = {
	KUNIT_CASE(test_scsi_proto),
	{}
};

static struct kunit_suite scsi_proto_test_suite = {
	.name = "scsi_proto",
	.test_cases = scsi_proto_test_cases,
};
kunit_test_suite(scsi_proto_test_suite);

MODULE_DESCRIPTION("<scsi/scsi_proto.h> unit tests");
MODULE_AUTHOR("Bart Van Assche");
MODULE_LICENSE("GPL");