1 /* $KAME: rtadvd.h,v 1.8 2000/05/16 13:34:14 itojun Exp $ */ 2 3 /* 4 * Copyright (C) 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34 #define ALLNODES "ff02::1" 35 #define ALLROUTERS "ff02::2" 36 #define ANY "::" 37 #define RTSOLLEN 8 38 39 /* protocol constants and default values */ 40 #define DEF_MAXRTRADVINTERVAL 600 41 #define DEF_ADVLINKMTU 0 42 #define DEF_ADVREACHABLETIME 0 43 #define DEF_ADVRETRANSTIMER 0 44 #define DEF_ADVCURHOPLIMIT 64 45 #define DEF_ADVVALIDLIFETIME 2592000 46 #define DEF_ADVPREFERREDLIFETIME 604800 47 48 /*XXX int-to-double comparison for INTERVAL items */ 49 #ifndef MIP6 50 #define mobileip6 0 51 #endif 52 53 #define MAXROUTERLIFETIME 9000 54 #define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0) 55 #define MAX_MAXINTERVAL 1800 56 #define MIN_MININTERVAL (mobileip6 ? 0.5 : 3) 57 #define MAXREACHABLETIME 3600000 58 59 #ifndef MIP6 60 #undef miobileip6 61 #endif 62 63 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 64 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 65 #define MAX_FINAL_RTR_ADVERTISEMENTS 3 66 #define MIN_DELAY_BETWEEN_RAS 3 67 #define MAX_RA_DELAY_TIME 500000 /* usec */ 68 69 #define PREFIX_FROM_KERNEL 1 70 #define PREFIX_FROM_CONFIG 2 71 #define PREFIX_FROM_DYNAMIC 3 72 73 struct prefix { 74 struct prefix *next; /* forward link */ 75 struct prefix *prev; /* previous link */ 76 77 u_int32_t validlifetime; /* AdvValidLifetime */ 78 u_int32_t preflifetime; /* AdvPreferredLifetime */ 79 u_int onlinkflg; /* bool: AdvOnLinkFlag */ 80 u_int autoconfflg; /* bool: AdvAutonomousFlag */ 81 #ifdef MIP6 82 u_int routeraddr; /* bool: RouterAddress */ 83 #endif 84 int prefixlen; 85 int origin; /* from kernel or cofig */ 86 struct in6_addr prefix; 87 }; 88 89 struct soliciter { 90 struct soliciter *next; 91 struct sockaddr_in6 addr; 92 }; 93 94 struct rainfo { 95 /* pointer for list */ 96 struct rainfo *next; 97 98 /* timer related parameters */ 99 struct rtadvd_timer *timer; 100 int initcounter; /* counter for the first few advertisements */ 101 struct timeval lastsent; /* timestamp when the latest RA was sent */ 102 int waiting; /* number of RS waiting for RA */ 103 104 /* interface information */ 105 int ifindex; 106 int advlinkopt; /* bool: whether include link-layer addr opt */ 107 struct sockaddr_dl *sdl; 108 char ifname[16]; 109 int phymtu; /* mtu of the physical interface */ 110 111 /* Router configuration variables */ 112 u_short lifetime; /* AdvDefaultLifetime */ 113 u_int maxinterval; /* MaxRtrAdvInterval */ 114 u_int mininterval; /* MinRtrAdvInterval */ 115 int managedflg; /* AdvManagedFlag */ 116 int otherflg; /* AdvOtherConfigFlag */ 117 #ifdef MIP6 118 int haflg; /* HAFlag */ 119 #endif 120 u_int32_t linkmtu; /* AdvLinkMTU */ 121 u_int32_t reachabletime; /* AdvReachableTime */ 122 u_int32_t retranstimer; /* AdvRetransTimer */ 123 u_int hoplimit; /* AdvCurHopLimit */ 124 struct prefix prefix; /* AdvPrefixList(link head) */ 125 int pfxs; /* number of prefixes */ 126 127 #ifdef MIP6 128 u_short hapref; /* Home Agent Preference */ 129 u_short hatime; /* Home Agent Lifetime */ 130 #endif 131 132 /* actual RA packet data and its length */ 133 size_t ra_datalen; 134 u_char *ra_data; 135 136 /* statistics */ 137 u_quad_t raoutput; /* number of RAs sent */ 138 u_quad_t rainput; /* number of RAs received */ 139 u_quad_t rainconsistent; /* number of RAs inconsistent with ours */ 140 u_quad_t rsinput; /* number of RSs received */ 141 142 /* info about soliciter */ 143 struct soliciter *soliciter; /* recent solication source */ 144 }; 145 146 void ra_timeout __P((void *)); 147 void ra_timer_update __P((void *, struct timeval *)); 148 149 #ifdef MIP6 150 extern int mobileip6; 151 #endif 152