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 * $Id: igmp.h,v 1.3 1994/08/21 05:27:25 paul Exp $ 39 */ 40 41 #ifndef _NETINET_IGMP_H_ 42 #define _NETINET_IGMP_H_ 43 44 /* 45 * Internet Group Management Protocol (IGMP) definitions. 46 * 47 * Written by Steve Deering, Stanford, May 1988. 48 * 49 * MULTICAST 1.2 50 */ 51 52 /* 53 * IGMP packet format. 54 */ 55 struct igmp { 56 u_char igmp_type; /* version & type of IGMP message */ 57 u_char igmp_code; /* unused, should be zero */ 58 u_short 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 /* message types, incl. version */ 65 #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 66 #define IGMP_DVMRP 0x13 /* for experimental multicast */ 67 /* routing protocol */ 68 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT 0x16 69 #define IGMP_HOST_LEAVE_MESSAGE 0x17 70 #define IGMP_MTRACE 0x1f /* mcast traceroute messages */ 71 #define IGMP_MTRACE_RESP 0x1e /* traceroute resp. (to sender) */ 72 73 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */ 74 #define IGMP_TIMER_SCALE 10 /* denotes that the igmp->timer filed */ 75 /*specifies time in 10th os seconds */ 76 77 #define IGMP_DELAYING_MEMBER 1 78 #define IGMP_IDLE_MEMBER 2 79 #define IGMP_LAZY_MEMBER 3 80 #define IGMP_SLEEPING_MEMBER 4 81 #define IGMP_AWAKENING_MEMBER 5 82 83 84 #define IGMP_OLD_ROUTER 0 85 #define IGMP_NEW_ROUTER 1 86 87 #define IGMP_AGE_THRESHOLD 540 88 89 #ifdef IGMP_STATES 90 static char *tostate[]={"","DELAYING_MEMBER","IDLE","LAZY","SLEEPING", 91 "AWAKENING" }; 92 #endif /* IGMP_STATES */ 93 #endif /* _NETINET_IGMP_H_ */ 94