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