| 1 | // SPDX-License-Identifier: GPL-2.0-only |
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| 2 | // |
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| 3 | // uapi_test.c - An application of Kunit to check layout of structures exposed to user space for |
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| 4 | // FireWire subsystem. |
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| 5 | // |
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| 6 | // Copyright (c) 2023 Takashi Sakamoto |
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| 7 | |
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| 8 | #include <kunit/test.h> |
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| 9 | #include <linux/firewire-cdev.h> |
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| 10 | |
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| 11 | // Known issue added at v2.6.27 kernel. |
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| 12 | static void structure_layout_event_response(struct kunit *test) |
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| 13 | { |
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| 14 | #if defined(CONFIG_X86_32) |
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| 15 | // 4 bytes alignment for aggregate type including 8 bytes storage types. |
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| 16 | KUNIT_EXPECT_EQ(test, 20, sizeof(struct fw_cdev_event_response)); |
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| 17 | #else |
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| 18 | // 8 bytes alignment for aggregate type including 8 bytes storage types. |
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| 19 | KUNIT_EXPECT_EQ(test, 24, sizeof(struct fw_cdev_event_response)); |
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| 20 | #endif |
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| 21 | |
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| 22 | KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_response, closure)); |
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| 23 | KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_response, type)); |
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| 24 | KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_response, rcode)); |
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| 25 | KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_response, length)); |
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| 26 | KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_response, data)); |
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| 27 | } |
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| 28 | |
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| 29 | // Added at v6.5. |
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| 30 | static void structure_layout_event_request3(struct kunit *test) |
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| 31 | { |
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| 32 | KUNIT_EXPECT_EQ(test, 56, sizeof(struct fw_cdev_event_request3)); |
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| 33 | |
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| 34 | KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_request3, closure)); |
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| 35 | KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_request3, type)); |
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| 36 | KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_request3, tcode)); |
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| 37 | KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_request3, offset)); |
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| 38 | KUNIT_EXPECT_EQ(test, 24, offsetof(struct fw_cdev_event_request3, source_node_id)); |
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| 39 | KUNIT_EXPECT_EQ(test, 28, offsetof(struct fw_cdev_event_request3, destination_node_id)); |
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| 40 | KUNIT_EXPECT_EQ(test, 32, offsetof(struct fw_cdev_event_request3, card)); |
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| 41 | KUNIT_EXPECT_EQ(test, 36, offsetof(struct fw_cdev_event_request3, generation)); |
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| 42 | KUNIT_EXPECT_EQ(test, 40, offsetof(struct fw_cdev_event_request3, handle)); |
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| 43 | KUNIT_EXPECT_EQ(test, 44, offsetof(struct fw_cdev_event_request3, length)); |
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| 44 | KUNIT_EXPECT_EQ(test, 48, offsetof(struct fw_cdev_event_request3, tstamp)); |
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| 45 | KUNIT_EXPECT_EQ(test, 56, offsetof(struct fw_cdev_event_request3, data)); |
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| 46 | } |
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| 47 | |
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| 48 | // Added at v6.5. |
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| 49 | static void structure_layout_event_response2(struct kunit *test) |
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| 50 | { |
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| 51 | KUNIT_EXPECT_EQ(test, 32, sizeof(struct fw_cdev_event_response2)); |
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| 52 | |
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| 53 | KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_response2, closure)); |
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| 54 | KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_response2, type)); |
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| 55 | KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_response2, rcode)); |
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| 56 | KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_response2, length)); |
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| 57 | KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_response2, request_tstamp)); |
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| 58 | KUNIT_EXPECT_EQ(test, 24, offsetof(struct fw_cdev_event_response2, response_tstamp)); |
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| 59 | KUNIT_EXPECT_EQ(test, 32, offsetof(struct fw_cdev_event_response2, data)); |
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| 60 | } |
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| 61 | |
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| 62 | // Added at v6.5. |
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| 63 | static void structure_layout_event_phy_packet2(struct kunit *test) |
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| 64 | { |
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| 65 | KUNIT_EXPECT_EQ(test, 24, sizeof(struct fw_cdev_event_phy_packet2)); |
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| 66 | |
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| 67 | KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_phy_packet2, closure)); |
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| 68 | KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_phy_packet2, type)); |
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| 69 | KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_phy_packet2, rcode)); |
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| 70 | KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_phy_packet2, length)); |
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| 71 | KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_phy_packet2, tstamp)); |
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| 72 | KUNIT_EXPECT_EQ(test, 24, offsetof(struct fw_cdev_event_phy_packet2, data)); |
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| 73 | } |
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| 74 | |
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| 75 | static struct kunit_case structure_layout_test_cases[] = { |
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| 76 | KUNIT_CASE(structure_layout_event_response), |
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| 77 | KUNIT_CASE(structure_layout_event_request3), |
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| 78 | KUNIT_CASE(structure_layout_event_response2), |
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| 79 | KUNIT_CASE(structure_layout_event_phy_packet2), |
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| 80 | {} |
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| 81 | }; |
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| 82 | |
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| 83 | static struct kunit_suite structure_layout_test_suite = { |
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| 84 | .name = "firewire-uapi-structure-layout" , |
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| 85 | .test_cases = structure_layout_test_cases, |
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| 86 | }; |
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| 87 | kunit_test_suite(structure_layout_test_suite); |
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| 88 | |
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| 89 | MODULE_DESCRIPTION("FireWire UAPI unit test suite" ); |
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| 90 | MODULE_LICENSE("GPL" ); |
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| 91 | |
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