/* $OpenBSD: rtadvd.h,v 1.17 2014/01/07 14:58:40 gsoares Exp $ */ /* $KAME: rtadvd.h,v 1.20 2002/05/29 10:13:10 itojun Exp $ */ /* * Copyright (C) 1998 WIDE Project. * All rights reserved. * * 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. Neither the name of the project 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 PROJECT 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 PROJECT 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. */ #define RTADVD_USER "_rtadvd" #define ALLNODES "ff02::1" #define ALLROUTERS_LINK "ff02::2" #define ALLROUTERS_SITE "ff05::2" #define ANY "::" #define RTSOLLEN 8 /* protocol constants and default values */ #define DEF_MAXRTRADVINTERVAL 600 #define DEF_ADVLINKMTU 0 #define DEF_ADVREACHABLETIME 0 #define DEF_ADVRETRANSTIMER 0 #define DEF_ADVCURHOPLIMIT 64 #define DEF_ADVVALIDLIFETIME 2592000 #define DEF_ADVPREFERREDLIFETIME 604800 /*XXX int-to-double comparison for INTERVAL items */ #define mobileip6 0 #define MAXROUTERLIFETIME 9000 #define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0) #define MAX_MAXINTERVAL 1800 #define MIN_MININTERVAL (mobileip6 ? 0.05 : 3.0) #define MAXREACHABLETIME 3600000 #undef miobileip6 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 #define MAX_FINAL_RTR_ADVERTISEMENTS 3 #define MIN_DELAY_BETWEEN_RAS 3 #define MAX_RA_DELAY_TIME 500000 /* usec */ #define PREFIX_FROM_KERNEL 1 #define PREFIX_FROM_CONFIG 2 #define PREFIX_FROM_DYNAMIC 3 struct prefix { TAILQ_ENTRY(prefix) entry; u_int32_t validlifetime; /* AdvValidLifetime */ time_t vltimeexpire; /* expiration of vltime; decrement case only */ u_int32_t preflifetime; /* AdvPreferredLifetime */ time_t pltimeexpire; /* expiration of pltime; decrement case only */ u_int onlinkflg; /* bool: AdvOnLinkFlag */ u_int autoconfflg; /* bool: AdvAutonomousFlag */ int prefixlen; int origin; /* from kernel or cofig */ struct in6_addr prefix; }; struct rtinfo { TAILQ_ENTRY(rtinfo) entry; uint32_t lifetime; int rtpref; int prefixlen; struct in6_addr prefix; }; /* * `struct rdnss` may contain an arbitrary number of `servers` and `struct * dnssldom` will contain a variable-sized `domain`. Space required for these * elements will be dynamically allocated. We do not use flexible array members * here because this breaks compile on some architectures using gcc2. Instead, * we just have an array with a single (unused) element. */ struct rdnss { TAILQ_ENTRY(rdnss) entry; u_int32_t lifetime; int servercnt; struct in6_addr servers[1]; }; struct dnssldom { TAILQ_ENTRY(dnssldom) entry; u_int32_t length; char domain[1]; }; struct dnssl { TAILQ_ENTRY(dnssl) entry; u_int32_t lifetime; TAILQ_HEAD(dnssldomlist, dnssldom) dnssldoms; }; struct soliciter { SLIST_ENTRY(soliciter) entry; struct sockaddr_in6 addr; }; struct rainfo { /* pointer for list */ SLIST_ENTRY(rainfo) entry; /* timer related parameters */ struct rtadvd_timer *timer; int initcounter; /* counter for the first few advertisements */ struct timeval lastsent; /* timestamp when the latest RA was sent */ int waiting; /* number of RS waiting for RA */ /* interface information */ int ifindex; int advlinkopt; /* bool: whether include link-layer addr opt */ struct sockaddr_dl *sdl; char ifname[IF_NAMESIZE]; int phymtu; /* mtu of the physical interface */ /* Router configuration variables */ u_short lifetime; /* AdvDefaultLifetime */ u_int maxinterval; /* MaxRtrAdvInterval */ u_int mininterval; /* MinRtrAdvInterval */ int managedflg; /* AdvManagedFlag */ int otherflg; /* AdvOtherConfigFlag */ int rtpref; /* router preference */ u_int32_t linkmtu; /* AdvLinkMTU */ u_int32_t reachabletime; /* AdvReachableTime */ u_int32_t retranstimer; /* AdvRetransTimer */ u_int hoplimit; /* AdvCurHopLimit */ TAILQ_HEAD(prefixlist, prefix) prefixes; /* AdvPrefixList(link head) */ int pfxs; /* number of prefixes */ TAILQ_HEAD(rtinfolist, rtinfo) rtinfos; int rtinfocnt; TAILQ_HEAD(rdnsslist, rdnss) rdnsss; /* advertised recursive dns servers */ int rdnsscnt; /* number of rdnss entries */ TAILQ_HEAD(dnssllist, dnssl) dnssls; int dnsslcnt; long clockskew; /* used for consisitency check of lifetimes */ /* actual RA packet data and its length */ size_t ra_datalen; u_char *ra_data; /* statistics */ u_quad_t raoutput; /* number of RAs sent */ u_quad_t rainput; /* number of RAs received */ u_quad_t rainconsistent; /* number of RAs inconsistent with ours */ u_quad_t rsinput; /* number of RSs received */ /* info about soliciter */ SLIST_HEAD(, soliciter) soliciters; /* recent solication source */ }; SLIST_HEAD(ralist, rainfo); void ra_timeout(void *); void ra_timer_update(void *, struct timeval *); int prefix_match(struct in6_addr *, int, struct in6_addr *, int); struct rainfo *if_indextorainfo(int); struct prefix *find_prefix(struct rainfo *, struct in6_addr *, int); extern struct in6_addr in6a_site_allrouters;