1 /* $OpenBSD: igmp.h,v 1.4 2001/06/09 07:03:40 angelos Exp $ */ 2 /* $NetBSD: igmp.h,v 1.6 1995/05/31 06:08:21 mycroft Exp $ */ 3 4 /* 5 * Copyright (c) 1988 Stephen Deering. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Stephen Deering of Stanford University. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)igmp.h 8.1 (Berkeley) 6/10/93 41 */ 42 43 #ifndef _NETINET_IGMP_H_ 44 #define _NETINET_IGMP_H_ 45 46 /* 47 * Internet Group Management Protocol (IGMP) definitions. 48 * 49 * MULTICAST 1.3 50 */ 51 52 /* 53 * IGMP packet format. 54 */ 55 struct igmp { 56 u_int8_t igmp_type; /* version & type of IGMP message */ 57 u_int8_t igmp_code; /* code for routing sub-messages */ 58 u_int16_t igmp_cksum; /* IP-style checksum */ 59 struct in_addr igmp_group; /* group address being reported */ 60 }; /* (zero for queries) */ 61 62 #define IGMP_MINLEN 8 63 64 #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* membership query */ 65 #define IGMP_v1_HOST_MEMBERSHIP_REPORT 0x12 /* v1 membership report */ 66 #define IGMP_DVMRP 0x13 /* DVMRP routing message */ 67 #define IGMP_PIM 0x14 /* PIM routing message */ 68 #define IGMP_v2_HOST_MEMBERSHIP_REPORT 0x16 /* v2 membership report */ 69 #define IGMP_HOST_LEAVE_MESSAGE 0x17 /* leave-group message */ 70 #define IGMP_MTRACE_REPLY 0x1e /* traceroute reply */ 71 #define IGMP_MTRACE_QUERY 0x1f /* traceroute query */ 72 73 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */ 74 /* query (in seconds) */ 75 76 #define IGMP_TIMER_SCALE 10 /* denominator for igmp_timer */ 77 78 /* 79 * States for the IGMP v2 state table. 80 */ 81 #define IGMP_DELAYING_MEMBER 1 82 #define IGMP_IDLE_MEMBER 2 83 #define IGMP_LAZY_MEMBER 3 84 #define IGMP_SLEEPING_MEMBER 4 85 #define IGMP_AWAKENING_MEMBER 5 86 87 /* 88 * States for IGMP router version cache. 89 */ 90 #define IGMP_v1_ROUTER 1 91 #define IGMP_v2_ROUTER 2 92 93 /* 94 * Revert to v2 if we haven't heard from the router in this amount of time. 95 */ 96 #define IGMP_AGE_THRESHOLD 540 97 98 #ifdef _KERNEL 99 void rti_delete __P((struct ifnet *)); 100 #endif /* _KERNEL */ 101 #endif /* _NETINET_IGMP_H_ */ 102