1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (C) 2019 Jan Sucan <jansucan@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/param.h>
30
31#include <atf-c.h>
32
33#include "../utils.h"
34
35/*
36 * Test cases.
37 */
38
39ATF_TC_WITHOUT_HEAD(aligned_even_length);
40ATF_TC_BODY(aligned_even_length, tc)
41{
42	u_char data[] __aligned(sizeof(u_short)) =
43		{0x12, 0x34, 0x56, 0x78};
44	u_short sum;
45
46	sum = in_cksum(data, nitems(data));
47	u_char *c_sum = (u_char *)&sum;
48	ATF_REQUIRE(c_sum[0] == 0x97 && c_sum[1] == 0x53);
49}
50
51ATF_TC_WITHOUT_HEAD(aligned_odd_length);
52ATF_TC_BODY(aligned_odd_length, tc)
53{
54	u_char data[] __aligned(sizeof(u_short)) =
55		{0x12, 0x34, 0x56, 0x78, 0x9a};
56	u_short sum;
57
58	sum = in_cksum(data, nitems(data));
59	u_char *c_sum = (u_char *)&sum;
60	ATF_REQUIRE(c_sum[0] == 0xfd && c_sum[1] == 0x52);
61}
62
63ATF_TC_WITHOUT_HEAD(unaligned_even_length);
64ATF_TC_BODY(unaligned_even_length, tc)
65{
66	u_char data[] __aligned(sizeof(u_short)) =
67		{0x00, 0x12, 0x34, 0x56, 0x78};
68	u_short sum;
69
70	sum = in_cksum(data + 1, nitems(data) - 1);
71	u_char *c_sum = (u_char *)&sum;
72	ATF_REQUIRE(c_sum[0] == 0x97 && c_sum[1] == 0x53);
73}
74
75ATF_TC_WITHOUT_HEAD(unaligned_odd_length);
76ATF_TC_BODY(unaligned_odd_length, tc)
77{
78	u_char data[] __aligned(sizeof(u_short)) =
79		{0x00, 0x12, 0x34, 0x56, 0x78, 0x9a};
80	u_short sum;
81
82	sum = in_cksum(data + 1, nitems(data) - 1);
83	u_char *c_sum = (u_char *)&sum;
84	ATF_REQUIRE(c_sum[0] == 0xfd && c_sum[1] == 0x52);
85}
86
87/*
88 * Main.
89 */
90
91ATF_TP_ADD_TCS(tp)
92{
93	ATF_TP_ADD_TC(tp, aligned_even_length);
94	ATF_TP_ADD_TC(tp, aligned_odd_length);
95	ATF_TP_ADD_TC(tp, unaligned_even_length);
96	ATF_TP_ADD_TC(tp, unaligned_odd_length);
97
98	return (atf_no_error());
99}
100