197 lines
6.2 KiB
C
197 lines
6.2 KiB
C
/* $NetBSD: rtadvd.h,v 1.13 2013/07/09 09:34:59 roy Exp $ */
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/* $KAME: rtadvd.h,v 1.30 2005/10/17 14:40:02 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 RTADVD_USER "_rtadvd"
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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 IN6ADDR_SITELOCAL_ALLROUTERS_INIT \
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{{{ 0xff, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
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//extern struct sockaddr_in6 sin6_linklocal_allnodes;
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//extern struct sockaddr_in6 sin6_linklocal_allrouters;
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extern struct sockaddr_in6 sin6_sitelocal_allrouters;
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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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#define MAXROUTERLIFETIME 9000
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#define MIN_MAXINTERVAL 4
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#define MAX_MAXINTERVAL 1800
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#define MIN_MININTERVAL 3
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#define MAXREACHABLETIME 3600000
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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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TAILQ_ENTRY(prefix) next;
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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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uint32_t validlifetime; /* AdvValidLifetime */
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long vltimeexpire; /* expiration of vltime; decrement case only */
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uint32_t preflifetime; /* AdvPreferredLifetime */
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long pltimeexpire; /* expiration of pltime; decrement case only */
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uint16_t onlinkflg; /* bool: AdvOnLinkFlag */
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uint16_t autoconfflg; /* bool: AdvAutonomousFlag */
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int prefixlen;
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int origin; /* from kernel or config */
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struct in6_addr prefix;
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};
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struct rtinfo {
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TAILQ_ENTRY(rtinfo) next;
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uint32_t ltime; /* route lifetime */
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uint16_t rtpref; /* route preference */
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int prefixlen;
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struct in6_addr prefix;
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};
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struct rdnss_addr {
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TAILQ_ENTRY(rdnss_addr) next;
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struct in6_addr addr;
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};
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struct rdnss {
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TAILQ_ENTRY(rdnss) next;
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TAILQ_HEAD(, rdnss_addr) list;
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uint32_t lifetime;
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};
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struct dnssl_domain {
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TAILQ_ENTRY(dnssl_domain) next;
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int len;
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char domain[256];
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};
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struct dnssl {
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TAILQ_ENTRY(dnssl) next;
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TAILQ_HEAD(, dnssl_domain) list;
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uint32_t lifetime;
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};
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struct soliciter {
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TAILQ_ENTRY(soliciter) next;
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struct sockaddr_in6 addr;
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};
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struct rainfo {
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TAILQ_ENTRY(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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struct rainfo *leaving; /* the config which is leaving */
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struct rainfo *leaving_for; /* the new config to activate */
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int leaving_adv; /* number of RA left to send */
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/* interface information */
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uint16_t ifindex;
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int ifflags;
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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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uint32_t phymtu; /* mtu of the physical interface */
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/* Router configuration variables */
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uint16_t lifetime; /* AdvDefaultLifetime */
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uint16_t maxinterval; /* MaxRtrAdvInterval */
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uint16_t mininterval; /* MinRtrAdvInterval */
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int managedflg; /* AdvManagedFlag */
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int otherflg; /* AdvOtherConfigFlag */
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int rtpref; /* router preference */
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uint32_t linkmtu; /* AdvLinkMTU */
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uint32_t reachabletime; /* AdvReachableTime */
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uint32_t retranstimer; /* AdvRetransTimer */
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uint16_t hoplimit; /* AdvCurHopLimit */
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TAILQ_HEAD(, prefix) prefix; /* AdvPrefixList(link head) */
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int pfxs;
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uint16_t clockskew;/* used for consisitency check of lifetimes */
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TAILQ_HEAD(, rtinfo) route;
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TAILQ_HEAD(, rdnss) rdnss; /* RDNSS list */
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TAILQ_HEAD(, dnssl) dnssl; /* DNS Search List */
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/* actual RA packet data and its length */
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size_t ra_datalen;
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char *ra_data;
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/* statistics */
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uint64_t raoutput; /* number of RAs sent */
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uint64_t rainput; /* number of RAs received */
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uint64_t rainconsistent; /* number of RAs inconsistent with ours */
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uint64_t rsinput; /* number of RSs received */
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/* info about soliciter */
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TAILQ_HEAD(, soliciter) soliciter; /* recent solication source */
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};
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extern TAILQ_HEAD(ralist_head_t, rainfo) ralist;
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struct rtadvd_timer *ra_timeout(void *);
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void ra_timer_update(void *, struct timeval *);
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void ra_timer_set_short_delay(struct rainfo *);
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int prefix_match(struct in6_addr *, int, struct in6_addr *, int);
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struct rainfo *if_indextorainfo(unsigned int);
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struct prefix *find_prefix(struct rainfo *, struct in6_addr *, int);
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