/* $NetBSD: rtadvd.h,v 1.22 2025/11/27 05:04:35 andvar Exp $ */ /* $KAME: rtadvd.h,v 1.30 2005/10/17 14:40:02 suz 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 IN6ADDR_SITELOCAL_ALLROUTERS_INIT \ {{{ 0xff, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}} //extern struct sockaddr_in6 sin6_linklocal_allnodes; //extern struct sockaddr_in6 sin6_linklocal_allrouters; extern struct sockaddr_in6 sin6_sitelocal_allrouters; /* 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 #define DEF_ADVROUTERLIFETIME 1800 #define MAXROUTERLIFETIME 65535 /* RFC 8319 */ #define MIN_MAXINTERVAL 4 #define MAX_MAXINTERVAL 65535 /* RFC 8319 */ #define MIN_MININTERVAL 3 #define MAXREACHABLETIME 3600000 #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 500000000 /* nsec */ #define PREFIX_FROM_KERNEL 1 #define PREFIX_FROM_CONFIG 2 #define PREFIX_FROM_DYNAMIC 3 struct prefix { TAILQ_ENTRY(prefix) next; struct rainfo *rainfo; /* back pointer to the interface */ struct rtadvd_timer *timer; /* expiration timer. used when a prefix * derived from the kernel is deleted. */ uint32_t validlifetime; /* AdvValidLifetime */ long vltimeexpire; /* expiration of vltime; decrement case only */ uint32_t preflifetime; /* AdvPreferredLifetime */ long pltimeexpire; /* expiration of pltime; decrement case only */ uint16_t onlinkflg; /* bool: AdvOnLinkFlag */ uint16_t autoconfflg; /* bool: AdvAutonomousFlag */ int prefixlen; int origin; /* from kernel or config */ struct in6_addr prefix; }; struct rtinfo { TAILQ_ENTRY(rtinfo) next; uint32_t ltime; /* route lifetime */ uint16_t rtpref; /* route preference */ int prefixlen; struct in6_addr prefix; }; struct rdnss_addr { TAILQ_ENTRY(rdnss_addr) next; struct in6_addr addr; }; struct rdnss { TAILQ_ENTRY(rdnss) next; TAILQ_HEAD(, rdnss_addr) list; uint32_t lifetime; }; struct dnssl_domain { TAILQ_ENTRY(dnssl_domain) next; int len; char domain[256]; }; struct dnssl { TAILQ_ENTRY(dnssl) next; TAILQ_HEAD(, dnssl_domain) list; uint32_t lifetime; }; struct soliciter { TAILQ_ENTRY(soliciter) next; struct sockaddr_in6 addr; }; struct rainfo { TAILQ_ENTRY(rainfo) next; /* timer related parameters */ struct rtadvd_timer *timer; /* unsolicited RA timer */ struct rtadvd_timer *timer_sol; /* solicited RA timer */ int initcounter; /* counter for the first few advertisements */ struct timespec lastsent; /* timestamp when the latest RA was sent */ int waiting; /* number of RS waiting for RA */ struct rainfo *leaving; /* the config which is leaving */ struct rainfo *leaving_for; /* the new config to activate */ int leaving_adv; /* number of RA left to send */ /* interface information */ uint16_t ifindex; int ifflags; int advlinkopt; /* bool: whether include link-layer addr opt */ struct sockaddr_dl *sdl; char ifname[16]; uint32_t phymtu; /* mtu of the physical interface */ /* Router configuration variables */ uint16_t lifetime; /* AdvDefaultLifetime */ uint16_t maxinterval; /* MaxRtrAdvInterval */ uint16_t mininterval; /* MinRtrAdvInterval */ int managedflg; /* AdvManagedFlag */ int otherflg; /* AdvOtherConfigFlag */ int rtpref; /* router preference */ uint32_t linkmtu; /* AdvLinkMTU */ uint32_t reachabletime; /* AdvReachableTime */ uint32_t retranstimer; /* AdvRetransTimer */ uint16_t hoplimit; /* AdvCurHopLimit */ TAILQ_HEAD(, prefix) prefix; /* AdvPrefixList(link head) */ int pfxs; uint16_t clockskew; /* used for consistency check of lifetimes */ TAILQ_HEAD(, rtinfo) route; TAILQ_HEAD(, rdnss) rdnss; /* RDNSS list */ TAILQ_HEAD(, dnssl) dnssl; /* DNS Search List */ /* actual RA packet data and its length */ size_t ra_datalen; char *ra_data; /* statistics */ uint64_t raoutput; /* number of RAs sent */ uint64_t rainput; /* number of RAs received */ uint64_t rainconsistent; /* number of RAs inconsistent with ours */ uint64_t rsinput; /* number of RSs received */ /* info about soliciter */ TAILQ_HEAD(, soliciter) soliciter; /* recent solication source */ }; extern TAILQ_HEAD(ralist_head_t, rainfo) ralist; struct rtadvd_timer *ra_timeout(void *); struct rtadvd_timer *ra_timeout_sol(void *); void ra_timer_update(void *, struct timespec *); void ra_timer_set_short_delay(struct rainfo *, struct rtadvd_timer *); int prefix_match(struct in6_addr *, int, struct in6_addr *, int); struct rainfo *if_indextorainfo(unsigned int); struct prefix *find_prefix(struct rainfo *, const struct in6_addr *, int); extern int Cflag;
