1 /* $NetBSD: igmp.h,v 1.15 2021/02/03 18:13:13 roy Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Stephen Deering of Stanford University. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)igmp.h 8.1 (Berkeley) 6/10/93 35 */ 36 37 /* 38 * Copyright (c) 1988 Stephen Deering. 39 * 40 * This code is derived from software contributed to Berkeley by 41 * Stephen Deering of Stanford University. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)igmp.h 8.1 (Berkeley) 6/10/93 72 */ 73 74 #ifndef _NETINET_IGMP_H_ 75 #define _NETINET_IGMP_H_ 76 77 /* 78 * Internet Group Management Protocol (IGMP) definitions. 79 * 80 * MULTICAST 1.3 81 */ 82 83 /* 84 * IGMP packet format. 85 */ 86 struct igmp { 87 uint8_t igmp_type; /* version & type of IGMP message */ 88 uint8_t igmp_code; /* code for routing sub-messages */ 89 uint16_t igmp_cksum; /* IP-style checksum */ 90 struct in_addr igmp_group; /* group address being reported */ 91 }; /* (zero for queries) */ 92 #ifdef __CTASSERT 93 __CTASSERT(sizeof(struct igmp) == 8); 94 #endif 95 96 #define IGMP_MINLEN 8 97 98 #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* membership query */ 99 #define IGMP_v1_HOST_MEMBERSHIP_REPORT 0x12 /* v1 membership report */ 100 #define IGMP_DVMRP 0x13 /* DVMRP routing message */ 101 #define IGMP_PIM 0x14 /* PIM routing message */ 102 #define IGMP_v2_HOST_MEMBERSHIP_REPORT 0x16 /* v2 membership report */ 103 #define IGMP_HOST_LEAVE_MESSAGE 0x17 /* leave-group message */ 104 #define IGMP_MTRACE_REPLY 0x1e /* traceroute reply */ 105 #define IGMP_MTRACE_QUERY 0x1f /* traceroute query */ 106 107 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */ 108 /* query (in seconds) */ 109 110 #define IGMP_TIMER_SCALE 10 /* denominator for igmp_timer */ 111 112 /* 113 * States for the IGMP v2 state table. 114 */ 115 #define IGMP_DELAYING_MEMBER 1 116 #define IGMP_IDLE_MEMBER 2 117 #define IGMP_LAZY_MEMBER 3 118 #define IGMP_SLEEPING_MEMBER 4 119 #define IGMP_AWAKENING_MEMBER 5 120 121 /* 122 * States for IGMP router version cache. 123 */ 124 #define IGMP_v1_ROUTER 1 125 #define IGMP_v2_ROUTER 2 126 127 /* 128 * Revert to v2 if we haven't heard from the router in this amount of time. 129 */ 130 #define IGMP_AGE_THRESHOLD 540 131 132 #endif /* !_NETINET_IGMP_H_ */ 133