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e27b393912
This commit adds new event to notify event of phy packet with time stamp field. Unlike the fw_cdev_event_request3 and fw_cdev_event_response2, the size of new structure, fw_cdev_event_phy_packet2, is multiples of 8, thus padding is not required to keep the same size between System V ABI for different architectures. It is noticeable that for the case of ping request 1394 OHCI controller does not record the isochronous cycle at which the packet was sent for the request subaction. Instead, it records round-trip count measured by hardware at 42.195 MHz resolution. Cc: kunit-dev@googlegroups.com Link: https://lore.kernel.org/r/20230529113406.986289-12-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
88 lines
3.9 KiB
C
88 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// uapi_test.c - An application of Kunit to check layout of structures exposed to user space for
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// FireWire subsystem.
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//
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// Copyright (c) 2023 Takashi Sakamoto
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#include <kunit/test.h>
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#include <linux/firewire-cdev.h>
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// Known issue added at v2.6.27 kernel.
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static void structure_layout_event_response(struct kunit *test)
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{
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#if defined(CONFIG_X86_32)
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// 4 bytes alignment for aggregate type including 8 bytes storage types.
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KUNIT_EXPECT_EQ(test, 20, sizeof(struct fw_cdev_event_response));
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#else
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// 8 bytes alignment for aggregate type including 8 bytes storage types.
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KUNIT_EXPECT_EQ(test, 24, sizeof(struct fw_cdev_event_response));
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#endif
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KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_response, closure));
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KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_response, type));
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KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_response, rcode));
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KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_response, length));
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KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_response, data));
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}
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// Added at v6.5.
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static void structure_layout_event_request3(struct kunit *test)
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{
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KUNIT_EXPECT_EQ(test, 56, sizeof(struct fw_cdev_event_request3));
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KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_request3, closure));
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KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_request3, type));
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KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_request3, tcode));
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KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_request3, offset));
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KUNIT_EXPECT_EQ(test, 24, offsetof(struct fw_cdev_event_request3, source_node_id));
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KUNIT_EXPECT_EQ(test, 28, offsetof(struct fw_cdev_event_request3, destination_node_id));
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KUNIT_EXPECT_EQ(test, 32, offsetof(struct fw_cdev_event_request3, card));
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KUNIT_EXPECT_EQ(test, 36, offsetof(struct fw_cdev_event_request3, generation));
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KUNIT_EXPECT_EQ(test, 40, offsetof(struct fw_cdev_event_request3, handle));
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KUNIT_EXPECT_EQ(test, 44, offsetof(struct fw_cdev_event_request3, length));
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KUNIT_EXPECT_EQ(test, 48, offsetof(struct fw_cdev_event_request3, tstamp));
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KUNIT_EXPECT_EQ(test, 56, offsetof(struct fw_cdev_event_request3, data));
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}
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// Added at v6.5.
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static void structure_layout_event_response2(struct kunit *test)
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{
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KUNIT_EXPECT_EQ(test, 32, sizeof(struct fw_cdev_event_response2));
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KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_response2, closure));
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KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_response2, type));
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KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_response2, rcode));
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KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_response2, length));
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KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_response2, request_tstamp));
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KUNIT_EXPECT_EQ(test, 24, offsetof(struct fw_cdev_event_response2, response_tstamp));
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KUNIT_EXPECT_EQ(test, 32, offsetof(struct fw_cdev_event_response2, data));
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}
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// Added at v6.5.
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static void structure_layout_event_phy_packet2(struct kunit *test)
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{
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KUNIT_EXPECT_EQ(test, 24, sizeof(struct fw_cdev_event_phy_packet2));
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KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_phy_packet2, closure));
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KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_phy_packet2, type));
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KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_phy_packet2, rcode));
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KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_phy_packet2, length));
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KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_phy_packet2, tstamp));
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KUNIT_EXPECT_EQ(test, 24, offsetof(struct fw_cdev_event_phy_packet2, data));
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}
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static struct kunit_case structure_layout_test_cases[] = {
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KUNIT_CASE(structure_layout_event_response),
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KUNIT_CASE(structure_layout_event_request3),
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KUNIT_CASE(structure_layout_event_response2),
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KUNIT_CASE(structure_layout_event_phy_packet2),
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{}
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};
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static struct kunit_suite structure_layout_test_suite = {
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.name = "firewire-uapi-structure-layout",
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.test_cases = structure_layout_test_cases,
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};
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kunit_test_suite(structure_layout_test_suite);
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