1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
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9  *    notice, this list of conditions and the following disclaimer.
10  *  * Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in
12  *    the documentation and/or other materials provided with the
13  *    distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #pragma once
30 
31 /**
32  * @file netinet/igmp.h
33  * @brief Internet Group Management Protocol (IGMP).
34  */
35 
36 #include <sys/cdefs.h>
37 #include <netinet/in.h>
38 
39 #include <linux/igmp.h>
40 
41 /**
42  * The uapi type is called `igmphdr`,
43  * doesn't have the `igmp_` prefix on each field,
44  * and uses a `__be32` for the group address.
45  *
46  * This is the type that BSDs and musl/glibc expose to userspace.
47  */
48 struct igmp {
49   uint8_t igmp_type;
50   uint8_t igmp_code;
51   uint16_t igmp_cksum;
52   struct in_addr igmp_group;
53 };
54 
55 /** Commonly-used BSD synonym for the Linux constant. */
56 #define IGMP_MEMBERSHIP_QUERY IGMP_HOST_MEMBERSHIP_QUERY
57