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fbbd9655e5
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
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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* 3. 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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