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igmp_var.h
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/
igmp_var.h
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/*
* 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.
*
* from: @(#)igmp_var.h 8.1 (Berkeley) 7/19/93
* $FreeBSD: src/sys/netinet/igmp_var.h,v 1.17 1999/12/29 04:40:59 peter Exp $
* $DragonFly: src/sys/netinet/igmp_var.h,v 1.6 2006/09/03 18:52:29 dillon Exp $
*/
#ifndef _NETINET_IGMP_VAR_H_
#define _NETINET_IGMP_VAR_H_
#ifndef _SYS_TYPES_H_
#include <sys/types.h>
#endif
#ifdef _KERNEL
#ifndef _SYS_SYSCTL_H_
#include <sys/sysctl.h>
#endif
#endif
/*
* Internet Group Management Protocol (IGMP),
* implementation-specific definitions.
*
* Written by Steve Deering, Stanford, May 1988.
*
* MULTICAST Revision: 3.5.1.3
*/
struct igmpstat {
u_int igps_rcv_total; /* total IGMP messages received */
u_int igps_rcv_tooshort; /* received with too few bytes */
u_int igps_rcv_badsum; /* received with bad checksum */
u_int igps_rcv_queries; /* received membership queries */
u_int igps_rcv_badqueries; /* received invalid queries */
u_int igps_rcv_reports; /* received membership reports */
u_int igps_rcv_badreports; /* received invalid reports */
u_int igps_rcv_ourreports; /* received reports for our groups */
u_int igps_snd_reports; /* sent membership reports */
};
#ifdef _KERNEL
#define IGMP_RANDOM_DELAY(X) (krandom() % (X) + 1)
/*
* States for IGMPv2's leave processing
*/
#define IGMP_OTHERMEMBER 0
#define IGMP_IREPORTEDLAST 1
/*
* We must remember what version the subnet's querier is.
* We conveniently use the IGMP message type for the proper
* membership report to keep this state.
*/
#define IGMP_V1_ROUTER IGMP_V1_MEMBERSHIP_REPORT
#define IGMP_V2_ROUTER IGMP_V2_MEMBERSHIP_REPORT
/*
* Revert to new router if we haven't heard from an old router in
* this amount of time.
*/
#define IGMP_AGE_THRESHOLD 540
struct mbuf;
struct in_multi;
void igmp_init (void);
int igmp_input (struct mbuf **, int *, int);
void igmp_joingroup (struct in_multi *);
void igmp_leavegroup (struct in_multi *);
SYSCTL_DECL(_net_inet_igmp);
#endif
/*
* Names for IGMP sysctl objects
*/
#define IGMPCTL_STATS 1 /* statistics (read-only) */
#define IGMPCTL_MAXID 2
#define IGMPCTL_NAMES { \
{ 0, 0 }, \
{ "stats", CTLTYPE_STRUCT }, \
}
#endif