1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | // |
3 | // uapi_test.c - An application of Kunit to check layout of structures exposed to user space for |
4 | // FireWire subsystem. |
5 | // |
6 | // Copyright (c) 2023 Takashi Sakamoto |
7 | |
8 | #include <kunit/test.h> |
9 | #include <linux/firewire-cdev.h> |
10 | |
11 | // Known issue added at v2.6.27 kernel. |
12 | static void structure_layout_event_response(struct kunit *test) |
13 | { |
14 | #if defined(CONFIG_X86_32) |
15 | // 4 bytes alignment for aggregate type including 8 bytes storage types. |
16 | KUNIT_EXPECT_EQ(test, 20, sizeof(struct fw_cdev_event_response)); |
17 | #else |
18 | // 8 bytes alignment for aggregate type including 8 bytes storage types. |
19 | KUNIT_EXPECT_EQ(test, 24, sizeof(struct fw_cdev_event_response)); |
20 | #endif |
21 | |
22 | KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_response, closure)); |
23 | KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_response, type)); |
24 | KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_response, rcode)); |
25 | KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_response, length)); |
26 | KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_response, data)); |
27 | } |
28 | |
29 | // Added at v6.5. |
30 | static void structure_layout_event_request3(struct kunit *test) |
31 | { |
32 | KUNIT_EXPECT_EQ(test, 56, sizeof(struct fw_cdev_event_request3)); |
33 | |
34 | KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_request3, closure)); |
35 | KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_request3, type)); |
36 | KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_request3, tcode)); |
37 | KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_request3, offset)); |
38 | KUNIT_EXPECT_EQ(test, 24, offsetof(struct fw_cdev_event_request3, source_node_id)); |
39 | KUNIT_EXPECT_EQ(test, 28, offsetof(struct fw_cdev_event_request3, destination_node_id)); |
40 | KUNIT_EXPECT_EQ(test, 32, offsetof(struct fw_cdev_event_request3, card)); |
41 | KUNIT_EXPECT_EQ(test, 36, offsetof(struct fw_cdev_event_request3, generation)); |
42 | KUNIT_EXPECT_EQ(test, 40, offsetof(struct fw_cdev_event_request3, handle)); |
43 | KUNIT_EXPECT_EQ(test, 44, offsetof(struct fw_cdev_event_request3, length)); |
44 | KUNIT_EXPECT_EQ(test, 48, offsetof(struct fw_cdev_event_request3, tstamp)); |
45 | KUNIT_EXPECT_EQ(test, 56, offsetof(struct fw_cdev_event_request3, data)); |
46 | } |
47 | |
48 | // Added at v6.5. |
49 | static void structure_layout_event_response2(struct kunit *test) |
50 | { |
51 | KUNIT_EXPECT_EQ(test, 32, sizeof(struct fw_cdev_event_response2)); |
52 | |
53 | KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_response2, closure)); |
54 | KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_response2, type)); |
55 | KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_response2, rcode)); |
56 | KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_response2, length)); |
57 | KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_response2, request_tstamp)); |
58 | KUNIT_EXPECT_EQ(test, 24, offsetof(struct fw_cdev_event_response2, response_tstamp)); |
59 | KUNIT_EXPECT_EQ(test, 32, offsetof(struct fw_cdev_event_response2, data)); |
60 | } |
61 | |
62 | // Added at v6.5. |
63 | static void structure_layout_event_phy_packet2(struct kunit *test) |
64 | { |
65 | KUNIT_EXPECT_EQ(test, 24, sizeof(struct fw_cdev_event_phy_packet2)); |
66 | |
67 | KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_phy_packet2, closure)); |
68 | KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_phy_packet2, type)); |
69 | KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_phy_packet2, rcode)); |
70 | KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_phy_packet2, length)); |
71 | KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_phy_packet2, tstamp)); |
72 | KUNIT_EXPECT_EQ(test, 24, offsetof(struct fw_cdev_event_phy_packet2, data)); |
73 | } |
74 | |
75 | static struct kunit_case structure_layout_test_cases[] = { |
76 | KUNIT_CASE(structure_layout_event_response), |
77 | KUNIT_CASE(structure_layout_event_request3), |
78 | KUNIT_CASE(structure_layout_event_response2), |
79 | KUNIT_CASE(structure_layout_event_phy_packet2), |
80 | {} |
81 | }; |
82 | |
83 | static struct kunit_suite structure_layout_test_suite = { |
84 | .name = "firewire-uapi-structure-layout" , |
85 | .test_cases = structure_layout_test_cases, |
86 | }; |
87 | kunit_test_suite(structure_layout_test_suite); |
88 | |
89 | MODULE_LICENSE("GPL" ); |
90 | |