154820Ssklower /* 254820Ssklower * Copyright (c) 1988 Stephen Deering. 3*63907Sbostic * Copyright (c) 1992, 1993 4*63907Sbostic * The Regents of the University of California. All rights reserved. 554820Ssklower * 654820Ssklower * This code is derived from software contributed to Berkeley by 754820Ssklower * Stephen Deering of Stanford University. 854820Ssklower * 954820Ssklower * %sccs.include.redist.c% 1054820Ssklower * 11*63907Sbostic * @(#)igmp_var.h 8.1 (Berkeley) 07/19/93 1254820Ssklower */ 1354820Ssklower 1454820Ssklower /* 1554820Ssklower * Internet Group Management Protocol (IGMP), 1654820Ssklower * implementation-specific definitions. 1754820Ssklower * 1854820Ssklower * Written by Steve Deering, Stanford, May 1988. 1954820Ssklower * 2054820Ssklower * MULTICAST 1.1 2154820Ssklower */ 2254820Ssklower 2354820Ssklower struct igmpstat { 2457433Sandrew u_long igps_rcv_total; /* total IGMP messages received */ 2557433Sandrew u_long igps_rcv_tooshort; /* received with too few bytes */ 2657433Sandrew u_long igps_rcv_badsum; /* received with bad checksum */ 2757433Sandrew u_long igps_rcv_queries; /* received membership queries */ 2857433Sandrew u_long igps_rcv_badqueries; /* received invalid queries */ 2957433Sandrew u_long igps_rcv_reports; /* received membership reports */ 3057433Sandrew u_long igps_rcv_badreports; /* received invalid reports */ 3157433Sandrew u_long igps_rcv_ourreports; /* received reports for our groups */ 3257433Sandrew u_long igps_snd_reports; /* sent membership reports */ 3354820Ssklower }; 3454820Ssklower 3554820Ssklower #ifdef KERNEL 3654820Ssklower struct igmpstat igmpstat; 3754820Ssklower 3854820Ssklower /* 3954820Ssklower * Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_ 4054820Ssklower * DELAY * countdown frequency). We generate a "random" number by adding 4154820Ssklower * the total number of IP packets received, our primary IP address, and the 4254820Ssklower * multicast address being timed-out. The 4.3 random() routine really 4354820Ssklower * ought to be available in the kernel! 4454820Ssklower */ 4554820Ssklower #define IGMP_RANDOM_DELAY(multiaddr) \ 4654820Ssklower /* struct in_addr multiaddr; */ \ 4754820Ssklower ( (ipstat.ips_total + \ 4854820Ssklower ntohl(IA_SIN(in_ifaddr)->sin_addr.s_addr) + \ 4954820Ssklower ntohl((multiaddr).s_addr) \ 5054820Ssklower ) \ 5154820Ssklower % (IGMP_MAX_HOST_REPORT_DELAY * PR_FASTHZ) + 1 \ 5254820Ssklower ) 5354820Ssklower 5454820Ssklower void igmp_init __P(()); 5563906Smckusick void igmp_input __P((struct mbuf *, int)); 5654820Ssklower void igmp_joingroup __P((struct in_multi *)); 5754820Ssklower void igmp_leavegroup __P((struct in_multi *)); 5854820Ssklower void igmp_fasttimo __P(()); 5954820Ssklower #endif 60