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Diffstat (limited to 'sys/netinet/igmp_var.h')
-rw-r--r-- | sys/netinet/igmp_var.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/sys/netinet/igmp_var.h b/sys/netinet/igmp_var.h new file mode 100644 index 000000000000..ff70f70e2b34 --- /dev/null +++ b/sys/netinet/igmp_var.h @@ -0,0 +1,85 @@ +/* + * 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 |