0a5f3ef410
was removed from the kernel; Advertise the prefix with zero lifetimes rather than to remove the prefix from the prefix list to be advertised. This will help renumber a receiving host by deprecating the address derived from the old prefix. Obtained from: KAME MFC after: 2 weeks
179 lines
5.8 KiB
C
179 lines
5.8 KiB
C
/* $FreeBSD$ */
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/* $KAME: rtadvd.h,v 1.16 2001/04/10 15:08:31 suz Exp $ */
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/*
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* Copyright (C) 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#define ALLNODES "ff02::1"
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#define ALLROUTERS_LINK "ff02::2"
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#define ALLROUTERS_SITE "ff05::2"
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#define ANY "::"
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#define RTSOLLEN 8
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/* protocol constants and default values */
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#define DEF_MAXRTRADVINTERVAL 600
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#define DEF_ADVLINKMTU 0
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#define DEF_ADVREACHABLETIME 0
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#define DEF_ADVRETRANSTIMER 0
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#define DEF_ADVCURHOPLIMIT 64
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#define DEF_ADVVALIDLIFETIME 2592000
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#define DEF_ADVPREFERREDLIFETIME 604800
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/*XXX int-to-double comparison for INTERVAL items */
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#ifndef MIP6
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#define mobileip6 0
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#endif
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#define MAXROUTERLIFETIME 9000
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#define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0)
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#define MAX_MAXINTERVAL 1800
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#define MIN_MININTERVAL (mobileip6 ? 0.5 : 3)
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#define MAXREACHABLETIME 3600000
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#ifndef MIP6
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#undef miobileip6
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#endif
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#define MAX_INITIAL_RTR_ADVERT_INTERVAL 16
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#define MAX_INITIAL_RTR_ADVERTISEMENTS 3
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#define MAX_FINAL_RTR_ADVERTISEMENTS 3
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#define MIN_DELAY_BETWEEN_RAS 3
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#define MAX_RA_DELAY_TIME 500000 /* usec */
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#define PREFIX_FROM_KERNEL 1
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#define PREFIX_FROM_CONFIG 2
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#define PREFIX_FROM_DYNAMIC 3
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struct prefix {
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struct prefix *next; /* forward link */
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struct prefix *prev; /* previous link */
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struct rainfo *rainfo; /* back pointer to the interface */
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struct rtadvd_timer *timer; /* expiration timer. used when a prefix
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* derived from the kernel is deleted.
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*/
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u_int32_t validlifetime; /* AdvValidLifetime */
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long vltimeexpire; /* expiration of vltime; decrement case only */
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u_int32_t preflifetime; /* AdvPreferredLifetime */
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long pltimeexpire; /* expiration of pltime; decrement case only */
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u_int onlinkflg; /* bool: AdvOnLinkFlag */
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u_int autoconfflg; /* bool: AdvAutonomousFlag */
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#ifdef MIP6
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u_int routeraddr; /* bool: RouterAddress */
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#endif
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int prefixlen;
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int origin; /* from kernel or cofig */
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struct in6_addr prefix;
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};
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struct rtinfo {
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struct rtinfo *prev; /* previous link */
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struct rtinfo *next; /* forward link */
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u_int32_t ltime; /* route lifetime */
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u_int rtpref; /* router preference */
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int prefixlen;
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struct in6_addr prefix;
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};
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struct soliciter {
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struct soliciter *next;
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struct sockaddr_in6 addr;
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};
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struct rainfo {
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/* pointer for list */
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struct rainfo *next;
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/* timer related parameters */
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struct rtadvd_timer *timer;
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int initcounter; /* counter for the first few advertisements */
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struct timeval lastsent; /* timestamp when the latest RA was sent */
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int waiting; /* number of RS waiting for RA */
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/* interface information */
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int ifindex;
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int advlinkopt; /* bool: whether include link-layer addr opt */
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struct sockaddr_dl *sdl;
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char ifname[16];
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int phymtu; /* mtu of the physical interface */
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/* Router configuration variables */
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u_short lifetime; /* AdvDefaultLifetime */
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u_int maxinterval; /* MaxRtrAdvInterval */
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u_int mininterval; /* MinRtrAdvInterval */
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int managedflg; /* AdvManagedFlag */
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int otherflg; /* AdvOtherConfigFlag */
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#ifdef MIP6
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int haflg; /* HAFlag */
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#endif
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int rtpref; /* router preference */
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u_int32_t linkmtu; /* AdvLinkMTU */
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u_int32_t reachabletime; /* AdvReachableTime */
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u_int32_t retranstimer; /* AdvRetransTimer */
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u_int hoplimit; /* AdvCurHopLimit */
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struct prefix prefix; /* AdvPrefixList(link head) */
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int pfxs; /* number of prefixes */
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long clockskew; /* used for consisitency check of lifetimes */
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#ifdef MIP6
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u_short hapref; /* Home Agent Preference */
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u_short hatime; /* Home Agent Lifetime */
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#endif
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struct rtinfo route; /* route information option (link head) */
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int routes; /* number of route information options */
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/* actual RA packet data and its length */
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size_t ra_datalen;
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u_char *ra_data;
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/* statistics */
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u_quad_t raoutput; /* number of RAs sent */
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u_quad_t rainput; /* number of RAs received */
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u_quad_t rainconsistent; /* number of RAs inconsistent with ours */
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u_quad_t rsinput; /* number of RSs received */
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/* info about soliciter */
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struct soliciter *soliciter; /* recent solication source */
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};
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struct rtadvd_timer *ra_timeout __P((void *));
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void ra_timer_update __P((void *, struct timeval *));
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int prefix_match __P((struct in6_addr *, int, struct in6_addr *, int));
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struct rainfo *if_indextorainfo __P((int));
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struct prefix *find_prefix __P((struct rainfo *, struct in6_addr *, int));
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extern struct in6_addr in6a_site_allrouters;
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#ifdef MIP6
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extern int mobileip6;
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#endif
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