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149 lines
5.3 KiB
C
149 lines
5.3 KiB
C
/*-
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* Copyright (c) 1988 Stephen Deering.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Stephen Deering of Stanford University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)igmp.h 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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#ifndef _NETINET_IGMP_H_
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#define _NETINET_IGMP_H_
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/*
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* Internet Group Management Protocol (IGMP) definitions.
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*
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* Written by Steve Deering, Stanford, May 1988.
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*
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* MULTICAST Revision: 3.5.1.2
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*/
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/* Minimum length of any IGMP protocol message. */
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#define IGMP_MINLEN 8
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/*
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* IGMPv1/v2 query and host report format.
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*/
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struct igmp {
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u_char igmp_type; /* version & type of IGMP message */
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u_char igmp_code; /* subtype for routing msgs */
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u_short igmp_cksum; /* IP-style checksum */
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struct in_addr igmp_group; /* group address being reported */
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}; /* (zero for queries) */
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/*
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* IGMP v3 query format.
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*/
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struct igmpv3 {
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u_char igmp_type; /* version & type of IGMP message */
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u_char igmp_code; /* subtype for routing msgs */
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u_short igmp_cksum; /* IP-style checksum */
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struct in_addr igmp_group; /* group address being reported */
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/* (zero for queries) */
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u_char igmp_misc; /* reserved/suppress/robustness */
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u_char igmp_qqi; /* querier's query interval */
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u_short igmp_numsrc; /* number of sources */
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/*struct in_addr igmp_sources[1];*/ /* source addresses */
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};
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#define IGMP_V3_QUERY_MINLEN 12
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#define IGMP_EXP(x) (((x) >> 4) & 0x07)
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#define IGMP_MANT(x) ((x) & 0x0f)
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#define IGMP_QRESV(x) (((x) >> 4) & 0x0f)
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#define IGMP_SFLAG(x) (((x) >> 3) & 0x01)
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#define IGMP_QRV(x) ((x) & 0x07)
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struct igmp_grouprec {
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u_char ig_type; /* record type */
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u_char ig_datalen; /* length of auxiliary data */
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u_short ig_numsrc; /* number of sources */
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struct in_addr ig_group; /* group address being reported */
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/*struct in_addr ig_sources[1];*/ /* source addresses */
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};
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#define IGMP_GRPREC_HDRLEN 8
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/*
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* IGMPv3 host membership report header.
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*/
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struct igmp_report {
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u_char ir_type; /* IGMP_v3_HOST_MEMBERSHIP_REPORT */
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u_char ir_rsv1; /* must be zero */
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u_short ir_cksum; /* checksum */
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u_short ir_rsv2; /* must be zero */
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u_short ir_numgrps; /* number of group records */
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/*struct igmp_grouprec ir_groups[1];*/ /* group records */
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};
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#define IGMP_V3_REPORT_MINLEN 8
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#define IGMP_V3_REPORT_MAXRECS 65535
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/*
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* Message types, including version number.
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*/
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#define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* membership query */
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#define IGMP_v1_HOST_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */
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#define IGMP_DVMRP 0x13 /* DVMRP routing message */
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#define IGMP_PIM 0x14 /* PIMv1 message (historic) */
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#define IGMP_v2_HOST_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */
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#define IGMP_HOST_LEAVE_MESSAGE 0x17 /* Leave-group message */
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#define IGMP_MTRACE_REPLY 0x1e /* mtrace(8) reply */
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#define IGMP_MTRACE_QUERY 0x1f /* mtrace(8) probe */
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#define IGMP_v3_HOST_MEMBERSHIP_REPORT 0x22 /* Ver. 3 membership report */
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/*
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* IGMPv3 report modes.
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*/
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#define IGMP_DO_NOTHING 0 /* don't send a record */
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#define IGMP_MODE_IS_INCLUDE 1 /* MODE_IN */
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#define IGMP_MODE_IS_EXCLUDE 2 /* MODE_EX */
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#define IGMP_CHANGE_TO_INCLUDE_MODE 3 /* TO_IN */
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#define IGMP_CHANGE_TO_EXCLUDE_MODE 4 /* TO_EX */
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#define IGMP_ALLOW_NEW_SOURCES 5 /* ALLOW_NEW */
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#define IGMP_BLOCK_OLD_SOURCES 6 /* BLOCK_OLD */
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/*
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* IGMPv3 query types.
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*/
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#define IGMP_V3_GENERAL_QUERY 1
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#define IGMP_V3_GROUP_QUERY 2
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#define IGMP_V3_GROUP_SOURCE_QUERY 3
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/*
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* Maximum report interval for IGMP v1/v2 host membership reports [RFC 1112]
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*/
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#define IGMP_V1V2_MAX_RI 10
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#define IGMP_MAX_HOST_REPORT_DELAY IGMP_V1V2_MAX_RI
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/*
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* IGMP_TIMER_SCALE denotes that the igmp code field specifies
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* time in tenths of a second.
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*/
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#define IGMP_TIMER_SCALE 10
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#endif /* _NETINET_IGMP_H_ */
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