freebsd-nq/sys/netinet/igmp_var.h
1994-05-24 10:09:53 +00:00

86 lines
3.5 KiB
C

/*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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
*/
/*
* Internet Group Management Protocol (IGMP),
* implementation-specific definitions.
*
* Written by Steve Deering, Stanford, May 1988.
*
* MULTICAST 1.1
*/
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 */
};
#ifdef KERNEL
struct igmpstat igmpstat;
/*
* Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
* DELAY * countdown frequency). We generate a "random" number by adding
* the total number of IP packets received, our primary IP address, and the
* multicast address being timed-out. The 4.3 random() routine really
* ought to be available in the kernel!
*/
#define IGMP_RANDOM_DELAY(multiaddr) \
/* struct in_addr multiaddr; */ \
( (ipstat.ips_total + \
ntohl(IA_SIN(in_ifaddr)->sin_addr.s_addr) + \
ntohl((multiaddr).s_addr) \
) \
% (IGMP_MAX_HOST_REPORT_DELAY * PR_FASTHZ) + 1 \
)
void igmp_init __P(());
void igmp_input __P((struct mbuf *, int));
void igmp_joingroup __P((struct in_multi *));
void igmp_leavegroup __P((struct in_multi *));
void igmp_fasttimo __P(());
#endif