ip_mroute.h revision 2169
1139969Simp/* 21556Srgrimes * Copyright (c) 1989 Stephen Deering. 31556Srgrimes * Copyright (c) 1992, 1993 41556Srgrimes * The Regents of the University of California. All rights reserved. 51556Srgrimes * 61556Srgrimes * This code is derived from software contributed to Berkeley by 71556Srgrimes * Stephen Deering of Stanford University. 81556Srgrimes * 91556Srgrimes * Redistribution and use in source and binary forms, with or without 101556Srgrimes * modification, are permitted provided that the following conditions 111556Srgrimes * are met: 121556Srgrimes * 1. Redistributions of source code must retain the above copyright 131556Srgrimes * notice, this list of conditions and the following disclaimer. 141556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 151556Srgrimes * notice, this list of conditions and the following disclaimer in the 161556Srgrimes * documentation and/or other materials provided with the distribution. 171556Srgrimes * 3. All advertising materials mentioning features or use of this software 181556Srgrimes * must display the following acknowledgement: 191556Srgrimes * This product includes software developed by the University of 201556Srgrimes * California, Berkeley and its contributors. 211556Srgrimes * 4. Neither the name of the University nor the names of its contributors 221556Srgrimes * may be used to endorse or promote products derived from this software 231556Srgrimes * without specific prior written permission. 241556Srgrimes * 251556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 261556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 271556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 281556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 291556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30114433Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 311556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3220415Ssteve * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 331556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 341556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 351556Srgrimes * SUCH DAMAGE. 361556Srgrimes * 371556Srgrimes * @(#)ip_mroute.h 8.1 (Berkeley) 6/10/93 3836012Scharnier * $Id: ip_mroute.h,v 1.2 1994/08/02 07:48:42 davidg Exp $ 39114433Sobrien */ 4036012Scharnier 4199109Sobrien#ifndef _NETINET_IP_MROUTE_H_ 4299109Sobrien#define _NETINET_IP_MROUTE_H_ 431556Srgrimes 441556Srgrimes/* 451556Srgrimes * Definitions for the kernel part of DVMRP, 461556Srgrimes * a Distance-Vector Multicast Routing Protocol. 471556Srgrimes * (See RFC-1075.) 481556Srgrimes * 491556Srgrimes * Written by David Waitzman, BBN Labs, August 1988. 501556Srgrimes * Modified by Steve Deering, Stanford, February 1989. 511556Srgrimes * 52250037Seadler * MROUTING 1.0 5320415Ssteve */ 541556Srgrimes 5590110Simp 561556Srgrimes/* 571556Srgrimes * DVMRP-specific setsockopt commands. 581556Srgrimes */ 591556Srgrimes#define DVMRP_INIT 100 601556Srgrimes#define DVMRP_DONE 101 61165006Skientzle#define DVMRP_ADD_VIF 102 621556Srgrimes#define DVMRP_DEL_VIF 103 63165004Skientzle#define DVMRP_ADD_LGRP 104 64165006Skientzle#define DVMRP_DEL_LGRP 105 65165006Skientzle#define DVMRP_ADD_MRT 106 66165006Skientzle#define DVMRP_DEL_MRT 107 67165006Skientzle 68165006Skientzle 69165004Skientzle/* 701556Srgrimes * Types and macros for handling bitmaps with one bit per virtual interface. 711556Srgrimes */ 721556Srgrimes#define MAXVIFS 32 731556Srgrimestypedef u_long vifbitmap_t; 741556Srgrimestypedef u_short vifi_t; /* type of a vif index */ 7520415Ssteve 761556Srgrimes#define VIFM_SET(n, m) ((m) |= (1 << (n))) 771556Srgrimes#define VIFM_CLR(n, m) ((m) &= ~(1 << (n))) 781556Srgrimes#define VIFM_ISSET(n, m) ((m) & (1 << (n))) 791556Srgrimes#define VIFM_CLRALL(m) ((m) = 0x00000000) 8020415Ssteve#define VIFM_COPY(mfrom, mto) ((mto) = (mfrom)) 8120415Ssteve#define VIFM_SAME(m1, m2) ((m1) == (m2)) 8220415Ssteve 831556Srgrimes 8476877Skris/* 851556Srgrimes * Agument structure for DVMRP_ADD_VIF. 861556Srgrimes * (DVMRP_DEL_VIF takes a single vifi_t argument.) 8776877Skris */ 881556Srgrimesstruct vifctl { 8991084Smarkm vifi_t vifc_vifi; /* the index of the vif to be added */ 9091084Smarkm u_char vifc_flags; /* VIFF_ flags defined below */ 9191084Smarkm u_char vifc_threshold; /* min ttl required to forward on vif */ 9291084Smarkm struct in_addr vifc_lcl_addr; /* local interface address */ 9391084Smarkm struct in_addr vifc_rmt_addr; /* remote address (tunnels only) */ 941556Srgrimes}; 951556Srgrimes 961556Srgrimes#define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */ 971556Srgrimes 9820415Ssteve 99194795Sdelphij/* 10090110Simp * Argument structure for DVMRP_ADD_LGRP and DVMRP_DEL_LGRP. 10120415Ssteve */ 10220415Sstevestruct lgrplctl { 103165006Skientzle vifi_t lgc_vifi; 10420415Ssteve struct in_addr lgc_gaddr; 10520415Ssteve}; 106 107 108/* 109 * Argument structure for DVMRP_ADD_MRT. 110 * (DVMRP_DEL_MRT takes a single struct in_addr argument, containing origin.) 111 */ 112struct mrtctl { 113 struct in_addr mrtc_origin; /* subnet origin of multicasts */ 114 struct in_addr mrtc_originmask; /* subnet mask for origin */ 115 vifi_t mrtc_parent; /* incoming vif */ 116 vifbitmap_t mrtc_children; /* outgoing children vifs */ 117 vifbitmap_t mrtc_leaves; /* subset of outgoing children vifs */ 118}; 119 120 121#ifdef KERNEL 122 123/* 124 * The kernel's virtual-interface structure. 125 */ 126struct vif { 127 u_char v_flags; /* VIFF_ flags defined above */ 128 u_char v_threshold; /* min ttl required to forward on vif */ 129 struct in_addr v_lcl_addr; /* local interface address */ 130 struct in_addr v_rmt_addr; /* remote address (tunnels only) */ 131 struct ifnet *v_ifp; /* pointer to interface */ 132 struct in_addr *v_lcl_grps; /* list of local grps (phyints only) */ 133 int v_lcl_grps_max; /* malloc'ed number of v_lcl_grps */ 134 int v_lcl_grps_n; /* used number of v_lcl_grps */ 135 u_long v_cached_group; /* last grp looked-up (phyints only) */ 136 int v_cached_result; /* last look-up result (phyints only) */ 137}; 138 139/* 140 * The kernel's multicast route structure. 141 */ 142struct mrt { 143 struct in_addr mrt_origin; /* subnet origin of multicasts */ 144 struct in_addr mrt_originmask; /* subnet mask for origin */ 145 vifi_t mrt_parent; /* incoming vif */ 146 vifbitmap_t mrt_children; /* outgoing children vifs */ 147 vifbitmap_t mrt_leaves; /* subset of outgoing children vifs */ 148 struct mrt *mrt_next; /* forward link */ 149}; 150 151 152#define MRTHASHSIZ 64 153#if (MRTHASHSIZ & (MRTHASHSIZ - 1)) == 0 /* from sys:route.h */ 154#define MRTHASHMOD(h) ((h) & (MRTHASHSIZ - 1)) 155#else 156#define MRTHASHMOD(h) ((h) % MRTHASHSIZ) 157#endif 158 159/* 160 * The kernel's multicast routing statistics. 161 */ 162struct mrtstat { 163 u_long mrts_mrt_lookups; /* # multicast route lookups */ 164 u_long mrts_mrt_misses; /* # multicast route cache misses */ 165 u_long mrts_grp_lookups; /* # group address lookups */ 166 u_long mrts_grp_misses; /* # group address cache misses */ 167 u_long mrts_no_route; /* no route for packet's origin */ 168 u_long mrts_bad_tunnel; /* malformed tunnel options */ 169 u_long mrts_cant_tunnel; /* no room for tunnel options */ 170}; 171 172 173int ip_mrouter_cmd __P((int, struct socket *, struct mbuf *)); 174int ip_mrouter_done __P((void)); 175 176#endif /* KERNEL */ 177 178#endif 179