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/* $OpenBSD: igmp_var.h,v 1.15 2022/03/28 16:31:26 bluhm Exp $ */
/* $NetBSD: igmp_var.h,v 1.9 1996/02/13 23:41:31 christos Exp $ */
/*
* 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_var.h 8.1 (Berkeley) 7/19/93
*/
#ifndef _NETINET_IGMP_VAR_H_
#define _NETINET_IGMP_VAR_H_
/*
* Internet Group Management Protocol (IGMP),
* implementation-specific definitions.
*
* Written by Steve Deering, Stanford, May 1988.
* Modified by Rosen Sharma, Stanford, Aug 1994.
* Modified by Bill Fenner, Xerox PARC, Feb 1995.
*
* MULTICAST 1.3
*/
struct igmpstat {
u_long igps_rcv_total; /* total IGMP messages received */
u_long igps_rcv_tooshort; /* received with too few bytes */
u_long igps_rcv_badsum; /* received with bad checksum */
u_long igps_rcv_queries; /* received membership queries */
u_long igps_rcv_badqueries; /* received invalid queries */
u_long igps_rcv_reports; /* received membership reports */
u_long igps_rcv_badreports; /* received invalid reports */
u_long igps_rcv_ourreports; /* received reports for our groups */
u_long igps_snd_reports; /* sent membership reports */
};
/*
* Names for IGMP sysctl objects
*/
#define IGMPCTL_STATS 1 /* IGMP statistics */
#define IGMPCTL_MAXID 2
#define IGMPCTL_NAMES { \
{ 0, 0 }, \
{ "stats", CTLTYPE_STRUCT } \
}
#ifdef _KERNEL
#include <sys/percpu.h>
enum igmpstat_counters {
igps_rcv_total, /* total IGMP messages received */
igps_rcv_tooshort, /* received with too few bytes */
igps_rcv_badsum, /* received with bad checksum */
igps_rcv_queries, /* received membership queries */
igps_rcv_badqueries, /* received invalid queries */
igps_rcv_reports, /* received membership reports */
igps_rcv_badreports, /* received invalid reports */
igps_rcv_ourreports, /* received reports for our groups */
igps_snd_reports, /* sent membership reports */
igps_ncounters
};
extern struct cpumem *igmpcounters;
static inline void
igmpstat_inc(enum igmpstat_counters c)
{
counters_inc(igmpcounters, c);
}
/*
* Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
* DELAY * countdown frequency). We assume that the routine random()
* is defined somewhere (and that it returns a positive number).
*/
#define IGMP_RANDOM_DELAY(X) (arc4random_uniform(X) + 1)
void igmp_init(void);
int igmp_input(struct mbuf **, int *, int, int);
void igmp_joingroup(struct in_multi *, struct ifnet *);
void igmp_leavegroup(struct in_multi *, struct ifnet *);
void igmp_fasttimo(void);
void igmp_slowtimo(void);
int igmp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
#endif /* _KERNEL */
#endif /* _NETINET_IGMP_VAR_H_ */
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