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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1990 Mentat Inc. */
#ifndef _NETINET_IGMP_H
#define _NETINET_IGMP_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Internet Group Management Protocol (IGMP) definitions.
*
* Written by Steve Deering, Stanford, May 1988.
* Modified by Rosen Sharma, Stanford, Aug 1994
* Modified by Bill Fenner, Xerox PARC, April 1995
*
* MULTICAST 3.5.1.1
*/
/*
* IGMP packet format.
*/
struct igmp {
uchar_t igmp_type; /* version & type of IGMP message */
uchar_t igmp_code; /* code for routing sub-msgs */
ushort_t igmp_cksum; /* IP-style checksum */
struct in_addr igmp_group; /* group address being reported */
}; /* (zero for queries) */
/* IGMPv3 Membership Report common header */
struct igmp3r {
uchar_t igmp3r_type; /* version & type of IGMP message */
uchar_t igmp3r_code; /* code for routing sub-msgs */
ushort_t igmp3r_cksum; /* IP-style checksum */
ushort_t igmp3r_res; /* Reserved */
ushort_t igmp3r_numrec; /* Number of group records */
};
/* IGMPv3 Group Record header */
struct grphdr {
uchar_t grphdr_type; /* type of record */
uchar_t grphdr_auxlen; /* auxiliary data length */
ushort_t grphdr_numsrc; /* number of sources */
struct in_addr grphdr_group; /* group address being reported */
};
/* IGMPv3 Membership Query header */
struct igmp3q {
uchar_t igmp3q_type; /* type of IGMP message */
uchar_t igmp3q_mxrt; /* maximum response time */
ushort_t igmp3q_cksum; /* IP-style checksum */
struct in_addr igmp3q_group; /* group address being queried */
ushort_t igmp3q_res; /* reserved */
ushort_t igmp3q_numsrc; /* number of sources */
};
#ifdef _KERNEL
typedef struct igmp_s {
uint8_t igmp_type; /* version & type of IGMP message */
uint8_t igmp_code; /* code for routing sub-msgs */
uint8_t igmp_cksum[2]; /* IP-style checksum */
uint8_t igmp_group[4]; /* group address being reported */
} igmp_t; /* (zero for queries) */
/* Aligned igmp header */
typedef struct igmpa_s {
uint8_t igmpa_type; /* version & type of IGMP message */
uint8_t igmpa_code; /* code for routing sub-msgs */
uint16_t igmpa_cksum; /* IP-style checksum */
ipaddr_t igmpa_group; /* group address being reported */
} igmpa_t; /* (zero for queries) */
/* Aligned IGMPv3 Membership Report common header */
typedef struct igmp3ra_s {
uint8_t igmp3ra_type; /* version & type of IGMP message */
uint8_t igmp3ra_res; /* Reserved */
uint16_t igmp3ra_cksum; /* IP-style checksum */
uint16_t igmp3ra_res1; /* Reserved */
uint16_t igmp3ra_numrec; /* Number of group records */
} igmp3ra_t;
/* Aligned IGMPv3 Group Record header */
typedef struct grphdra_s {
uint8_t grphdra_type; /* type of record */
uint8_t grphdra_auxlen; /* auxiliary data length */
uint16_t grphdra_numsrc; /* number of sources */
ipaddr_t grphdra_group; /* group addrss being reported */
} grphdra_t;
/* Aligned IGMpv3 Membership Query header */
typedef struct igmp3qa_s {
uint8_t igmp3qa_type; /* type of IGMP message */
uint8_t igmp3qa_mxrc; /* maximum response code */
uint16_t igmp3qa_cksum; /* IP-style checksum */
ipaddr_t igmp3qa_group; /* group address being queried */
uint8_t igmp3qa_sqrv; /* S Flag, Q's Robustness Variable */
uint8_t igmp3qa_qqic; /* Querier's Query Interval Code */
uint16_t igmp3qa_numsrc; /* number of sources */
} igmp3qa_t;
#endif /* _KERNEL */
#define IGMP_MINLEN 8
#define IGMP_V3_QUERY_MINLEN 12
/*
* Message types, including version number.
*/
#define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */
#define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Vers.1 membership report */
#define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Vers.2 membership report */
#define IGMP_V3_MEMBERSHIP_REPORT 0x22 /* Vers.3 membership report */
#define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */
#define IGMP_DVMRP 0x13 /* DVMRP routing message */
#define IGMP_PIM 0x14 /* PIM routing message */
#define IGMP_MTRACE_RESP 0x1e /* traceroute resp to sender */
#define IGMP_MTRACE 0x1f /* mcast traceroute messages */
#define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
/* query (in seconds) */
/* according to RFC1112 */
#define IGMP_V3_MAXRT_FPMIN 0x80 /* max resp code fp format */
#define IGMP_V3_MAXRT_MANT_MASK 0x0f
#define IGMP_V3_MAXRT_EXP_MASK 0x70
#define IGMP_V3_SFLAG_MASK 0x8 /* mask off s part of sqrv */
#define IGMP_V3_RV_MASK 0x7 /* mask off qrv part of sqrv */
#define IGMP_V3_QQI_FPMIN 0x80 /* qqi code fp format */
#define IGMP_V3_QQI_MANT_MASK 0x0f
#define IGMP_V3_QQI_EXP_MASK 0x70
/*
* IGMPv3/MLDv2-specific definitions
*/
/*
* Group Record Types. The values of these enums match the Record Type
* field values defined in RFCs 3376 and 3810 for IGMPv3 and MLDv2 reports.
*/
typedef enum {
MODE_IS_INCLUDE = 1,
MODE_IS_EXCLUDE,
CHANGE_TO_INCLUDE,
CHANGE_TO_EXCLUDE,
ALLOW_NEW_SOURCES,
BLOCK_OLD_SOURCES
} mcast_record_t;
/* Router Alert Option */
#define RTRALERT_LEN 4
#define RTRALERT_LEN_IN_WORDS 1
/*
* The following four defininitions are for backwards compatibility.
* They should be removed as soon as all applications are updated to
* use the new constant names.
*/
#define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY
#define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT
#define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
#define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP
#ifdef __cplusplus
}
#endif
#endif /* _NETINET_IGMP_H */
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