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1// SPDX-License-Identifier: GPL-2.0-only2//3// uapi_test.c - An application of Kunit to check layout of structures exposed to user space for4// FireWire subsystem.5//6// Copyright (c) 2023 Takashi Sakamoto7 8#include <kunit/test.h>9#include <linux/firewire-cdev.h>10 11// Known issue added at v2.6.27 kernel.12static 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#else18 // 8 bytes alignment for aggregate type including 8 bytes storage types.19 KUNIT_EXPECT_EQ(test, 24, sizeof(struct fw_cdev_event_response));20#endif21 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 v6.5.30static 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 v6.5.49static 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 v6.5.63static 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 75static 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 83static struct kunit_suite structure_layout_test_suite = {84 .name = "firewire-uapi-structure-layout",85 .test_cases = structure_layout_test_cases,86};87kunit_test_suite(structure_layout_test_suite);88 89MODULE_DESCRIPTION("FireWire UAPI unit test suite");90MODULE_LICENSE("GPL");91