1 /* 2 * Copyright (c) 1988 Stephen Deering. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Stephen Deering of Stanford University. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)igmp.h 8.1 (Berkeley) 6/10/93 38 * $FreeBSD: src/sys/netinet/igmp.h,v 1.10 1999/08/28 00:49:15 peter Exp $ 39 * $DragonFly: src/sys/netinet/igmp.h,v 1.4 2006/05/20 02:42:12 dillon Exp $ 40 */ 41 42 #ifndef _NETINET_IGMP_H_ 43 #define _NETINET_IGMP_H_ 44 45 #ifndef _SYS_TYPES_H_ 46 #include <sys/types.h> 47 #endif 48 #ifndef _NETINET_IN_H_ 49 #include <netinet/in.h> 50 #endif 51 52 /* 53 * Internet Group Management Protocol (IGMP) definitions. 54 * 55 * Written by Steve Deering, Stanford, May 1988. 56 * 57 * MULTICAST Revision: 3.5.1.2 58 */ 59 60 /* 61 * IGMP packet format. 62 */ 63 struct igmp { 64 u_char igmp_type; /* version & type of IGMP message */ 65 u_char igmp_code; /* subtype for routing msgs */ 66 u_short igmp_cksum; /* IP-style checksum */ 67 struct in_addr igmp_group; /* group address being reported */ 68 }; /* (zero for queries) */ 69 70 #define IGMP_MINLEN 8 71 72 /* 73 * Message types, including version number. 74 */ 75 #define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */ 76 #define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */ 77 #define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */ 78 #define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */ 79 80 #define IGMP_DVMRP 0x13 /* DVMRP routing message */ 81 #define IGMP_PIM 0x14 /* PIM routing message */ 82 83 #define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/ 84 #define IGMP_MTRACE 0x1f /* mcast traceroute messages */ 85 86 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to 87 * query (in seconds) according 88 * to RFC1112 */ 89 90 #define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field 91 * specifies time in 10th of seconds*/ 92 93 /* 94 * The following four defininitions are for backwards compatibility. 95 * They should be removed as soon as all applications are updated to 96 * use the new constant names. 97 */ 98 #define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY 99 #define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT 100 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT 101 #define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP 102 103 #endif /* _NETINET_IGMP_H_ */ 104