static void tb_test_path_not_bonded_lane1()

in test.c [870:930]

• 44 lines of code
• 2 McCabe index (conditional complexity)

static void tb_test_path_not_bonded_lane1(struct kunit *test)
{
	/*
	 * DP Video path from host to device using lane 1. Paths like
	 * these are only used with Thunderbolt 1 devices where lane
	 * bonding is not possible. USB4 specifically does not allow
	 * paths like this (you either use lane 0 where lane 1 is
	 * disabled or both lanes are bonded).
	 *
	 *   [Host]
	 *   1 :| 2
	 *   1 :| 2
	 *  [Device]
	 */
	static const struct hop_expectation test_data[] = {
		{
			.route = 0x0,
			.in_port = 5,
			.in_type = TB_TYPE_DP_HDMI_IN,
			.out_port = 2,
			.out_type = TB_TYPE_PORT,
		},
		{
			.route = 0x1,
			.in_port = 2,
			.in_type = TB_TYPE_PORT,
			.out_port = 13,
			.out_type = TB_TYPE_DP_HDMI_OUT,
		},
	};
	struct tb_switch *host, *dev;
	struct tb_port *in, *out;
	struct tb_path *path;
	int i;

	host = alloc_host(test);
	dev = alloc_dev_default(test, host, 0x1, false);

	in = &host->ports[5];
	out = &dev->ports[13];

	path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video");
	KUNIT_ASSERT_TRUE(test, path != NULL);
	KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data));
	for (i = 0; i < ARRAY_SIZE(test_data); i++) {
		const struct tb_port *in_port, *out_port;

		in_port = path->hops[i].in_port;
		out_port = path->hops[i].out_port;

		KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route);
		KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port);
		KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type,
				test_data[i].in_type);
		KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route);
		KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port);
		KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type,
				test_data[i].out_type);
	}
	tb_path_free(path);
}