1 /* $KAME: rtadvd.h,v 1.16 2001/04/10 15:08:31 suz 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: src/usr.sbin/rtadvd/rtadvd.h,v 1.1.2.3 2002/06/29 18:59:53 ume Exp $ 32 * $DragonFly: src/usr.sbin/rtadvd/rtadvd.h,v 1.3 2003/11/03 19:31:42 eirikn Exp $ 33 */ 34 35 #define ALLNODES "ff02::1" 36 #define ALLROUTERS_LINK "ff02::2" 37 #define ALLROUTERS_SITE "ff05::2" 38 #define ANY "::" 39 #define RTSOLLEN 8 40 41 /* protocol constants and default values */ 42 #define DEF_MAXRTRADVINTERVAL 600 43 #define DEF_ADVLINKMTU 0 44 #define DEF_ADVREACHABLETIME 0 45 #define DEF_ADVRETRANSTIMER 0 46 #define DEF_ADVCURHOPLIMIT 64 47 #define DEF_ADVVALIDLIFETIME 2592000 48 #define DEF_ADVPREFERREDLIFETIME 604800 49 50 /*XXX int-to-double comparison for INTERVAL items */ 51 #ifndef MIP6 52 #define mobileip6 0 53 #endif 54 55 #define MAXROUTERLIFETIME 9000 56 #define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0) 57 #define MAX_MAXINTERVAL 1800 58 #define MIN_MININTERVAL (mobileip6 ? 0.5 : 3) 59 #define MAXREACHABLETIME 3600000 60 61 #ifndef MIP6 62 #undef miobileip6 63 #endif 64 65 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 66 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 67 #define MAX_FINAL_RTR_ADVERTISEMENTS 3 68 #define MIN_DELAY_BETWEEN_RAS 3 69 #define MAX_RA_DELAY_TIME 500000 /* usec */ 70 71 #define PREFIX_FROM_KERNEL 1 72 #define PREFIX_FROM_CONFIG 2 73 #define PREFIX_FROM_DYNAMIC 3 74 75 struct prefix { 76 struct prefix *next; /* forward link */ 77 struct prefix *prev; /* previous link */ 78 79 struct rainfo *rainfo; /* back pointer to the interface */ 80 81 struct rtadvd_timer *timer; /* expiration timer. used when a prefix 82 * derived from the kernel is deleted. 83 */ 84 85 u_int32_t validlifetime; /* AdvValidLifetime */ 86 long vltimeexpire; /* expiration of vltime; decrement case only */ 87 u_int32_t preflifetime; /* AdvPreferredLifetime */ 88 long pltimeexpire; /* expiration of pltime; decrement case only */ 89 u_int onlinkflg; /* bool: AdvOnLinkFlag */ 90 u_int autoconfflg; /* bool: AdvAutonomousFlag */ 91 #ifdef MIP6 92 u_int routeraddr; /* bool: RouterAddress */ 93 #endif 94 int prefixlen; 95 int origin; /* from kernel or cofig */ 96 struct in6_addr prefix; 97 }; 98 99 struct rtinfo { 100 struct rtinfo *prev; /* previous link */ 101 struct rtinfo *next; /* forward link */ 102 103 u_int32_t ltime; /* route lifetime */ 104 u_int rtpref; /* router preference */ 105 int prefixlen; 106 struct in6_addr prefix; 107 }; 108 109 struct soliciter { 110 struct soliciter *next; 111 struct sockaddr_in6 addr; 112 }; 113 114 struct rainfo { 115 /* pointer for list */ 116 struct rainfo *next; 117 118 /* timer related parameters */ 119 struct rtadvd_timer *timer; 120 int initcounter; /* counter for the first few advertisements */ 121 struct timeval lastsent; /* timestamp when the latest RA was sent */ 122 int waiting; /* number of RS waiting for RA */ 123 124 /* interface information */ 125 int ifindex; 126 int advlinkopt; /* bool: whether include link-layer addr opt */ 127 struct sockaddr_dl *sdl; 128 char ifname[16]; 129 int phymtu; /* mtu of the physical interface */ 130 131 /* Router configuration variables */ 132 u_short lifetime; /* AdvDefaultLifetime */ 133 u_int maxinterval; /* MaxRtrAdvInterval */ 134 u_int mininterval; /* MinRtrAdvInterval */ 135 int managedflg; /* AdvManagedFlag */ 136 int otherflg; /* AdvOtherConfigFlag */ 137 #ifdef MIP6 138 int haflg; /* HAFlag */ 139 #endif 140 int rtpref; /* router preference */ 141 u_int32_t linkmtu; /* AdvLinkMTU */ 142 u_int32_t reachabletime; /* AdvReachableTime */ 143 u_int32_t retranstimer; /* AdvRetransTimer */ 144 u_int hoplimit; /* AdvCurHopLimit */ 145 struct prefix prefix; /* AdvPrefixList(link head) */ 146 int pfxs; /* number of prefixes */ 147 long clockskew; /* used for consisitency check of lifetimes */ 148 149 #ifdef MIP6 150 u_short hapref; /* Home Agent Preference */ 151 u_short hatime; /* Home Agent Lifetime */ 152 #endif 153 struct rtinfo route; /* route information option (link head) */ 154 int routes; /* number of route information options */ 155 156 /* actual RA packet data and its length */ 157 size_t ra_datalen; 158 u_char *ra_data; 159 160 /* statistics */ 161 u_quad_t raoutput; /* number of RAs sent */ 162 u_quad_t rainput; /* number of RAs received */ 163 u_quad_t rainconsistent; /* number of RAs inconsistent with ours */ 164 u_quad_t rsinput; /* number of RSs received */ 165 166 /* info about soliciter */ 167 struct soliciter *soliciter; /* recent solication source */ 168 }; 169 170 struct rtadvd_timer *ra_timeout(void *); 171 void ra_timer_update(void *, struct timeval *); 172 173 int prefix_match(struct in6_addr *, int, struct in6_addr *, int); 174 struct rainfo *if_indextorainfo(int); 175 struct prefix *find_prefix(struct rainfo *, struct in6_addr *, int); 176 177 extern struct in6_addr in6a_site_allrouters; 178 #ifdef MIP6 179 extern int mobileip6; 180 #endif 181