76ec1114d0
clock rather than the wall clock. Use timespec rather than timeval structs to make this transition easier. Kill custom timeval comparison functions in favor of timespeccmp(3).
197 lines
6.2 KiB
C
197 lines
6.2 KiB
C
/* $NetBSD: rtadvd.h,v 1.14 2015/06/05 14:09:20 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 500000000 /* nsec */
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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 timespec 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 timespec *);
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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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