drivers/scsi/scsi_proto_test.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright 2023 Google LLC
   4  */
   5 #include <kunit/test.h>
   6 #include <linux/unaligned.h>
   7 #include <scsi/scsi_proto.h>
   8
   9 static void test_scsi_proto(struct kunit *test)
  10 {
  11         static const union {
  12                 struct scsi_io_group_descriptor desc;
  13                 u8 arr[sizeof(struct scsi_io_group_descriptor)];
  14         } d = { .arr = { 0x45, 0, 0, 0, 0xb0, 0xe4, 0xe3 } };
  15         KUNIT_EXPECT_EQ(test, d.desc.io_advice_hints_mode + 0, 1);
  16         KUNIT_EXPECT_EQ(test, d.desc.st_enble + 0, 1);
  17         KUNIT_EXPECT_EQ(test, d.desc.cs_enble + 0, 0);
  18         KUNIT_EXPECT_EQ(test, d.desc.ic_enable + 0, 1);
  19         KUNIT_EXPECT_EQ(test, d.desc.acdlu + 0, 1);
  20         KUNIT_EXPECT_EQ(test, d.desc.rlbsr + 0, 3);
  21         KUNIT_EXPECT_EQ(test, d.desc.lbm_descriptor_type + 0, 0);
  22         KUNIT_EXPECT_EQ(test, d.desc.params[0] + 0, 0xe4);
  23         KUNIT_EXPECT_EQ(test, d.desc.params[1] + 0, 0xe3);
  24
  25         static const union {
  26                 struct scsi_stream_status s;
  27                 u8 arr[sizeof(struct scsi_stream_status)];
  28         } ss = { .arr = { 0x80, 0, 0x12, 0x34, 0x3f } };
  29         KUNIT_EXPECT_EQ(test, ss.s.perm + 0, 1);
  30         KUNIT_EXPECT_EQ(test, get_unaligned_be16(&ss.s.stream_identifier),
  31                         0x1234);
  32         KUNIT_EXPECT_EQ(test, ss.s.rel_lifetime + 0, 0x3f);
  33
  34         static const union {
  35                 struct scsi_stream_status_header h;
  36                 u8 arr[sizeof(struct scsi_stream_status_header)];
  37         } sh = { .arr = { 1, 2, 3, 4, 0, 0, 5, 6 } };
  38         KUNIT_EXPECT_EQ(test, get_unaligned_be32(&sh.h.len), 0x1020304);
  39         KUNIT_EXPECT_EQ(test, get_unaligned_be16(&sh.h.number_of_open_streams),
  40                         0x506);
  41 }
  42
  43 static struct kunit_case scsi_proto_test_cases[] = {
  44         KUNIT_CASE(test_scsi_proto),
  45         {}
  46 };
  47
  48 static struct kunit_suite scsi_proto_test_suite = {
  49         .name = "scsi_proto",
  50         .test_cases = scsi_proto_test_cases,
  51 };
  52 kunit_test_suite(scsi_proto_test_suite);
  53
  54 MODULE_DESCRIPTION("<scsi/scsi_proto.h> unit tests");
  55 MODULE_AUTHOR("Bart Van Assche");
  56 MODULE_LICENSE("GPL");