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rtadvd.h revision 1.5 
      1 /*	$NetBSD: rtadvd.h,v 1.5 2000/07/06 12:37:56 itojun Exp $	*/
      2 /*	$KAME: rtadvd.h,v 1.9 2000/06/22 20:16:13 itojun Exp $	*/
      3 
      4 /*
      5  * Copyright (C) 1998 WIDE Project.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. Neither the name of the project nor the names of its contributors
     17  *    may be used to endorse or promote products derived from this software
     18  *    without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 #define ALLNODES "ff02::1"
     34 #define ALLROUTERS "ff02::2"
     35 #define ANY "::"
     36 #define RTSOLLEN 8
     37 
     38 /* protocol constants and default values */
     39 #define DEF_MAXRTRADVINTERVAL 600
     40 #define DEF_ADVLINKMTU 0
     41 #define DEF_ADVREACHABLETIME 0
     42 #define DEF_ADVRETRANSTIMER 0
     43 #define DEF_ADVCURHOPLIMIT 64
     44 #define DEF_ADVVALIDLIFETIME 2592000
     45 #define DEF_ADVPREFERREDLIFETIME 604800
     46 
     47 /*XXX int-to-double comparison for INTERVAL items */
     48 #ifndef MIP6
     49 #define mobileip6 0
     50 #endif
     51 
     52 #define MAXROUTERLIFETIME 9000
     53 #define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0)
     54 #define MAX_MAXINTERVAL 1800
     55 #define MIN_MININTERVAL	(mobileip6 ? 0.5 : 3)
     56 #define MAXREACHABLETIME 3600000
     57 
     58 #ifndef MIP6
     59 #undef miobileip6
     60 #endif
     61 
     62 #define MAX_INITIAL_RTR_ADVERT_INTERVAL  16
     63 #define MAX_INITIAL_RTR_ADVERTISEMENTS    3
     64 #define MAX_FINAL_RTR_ADVERTISEMENTS      3
     65 #define MIN_DELAY_BETWEEN_RAS             3
     66 #define MAX_RA_DELAY_TIME                 500000 /* usec */
     67 
     68 #define PREFIX_FROM_KERNEL 1
     69 #define PREFIX_FROM_CONFIG 2
     70 #define PREFIX_FROM_DYNAMIC 3
     71 
     72 struct prefix {
     73 	struct prefix *next;	/* forward link */
     74 	struct prefix *prev;	/* previous link */
     75 
     76 	u_int32_t validlifetime; /* AdvValidLifetime */
     77 	u_int32_t preflifetime;	/* AdvPreferredLifetime */
     78 	u_int onlinkflg;	/* bool: AdvOnLinkFlag */
     79 	u_int autoconfflg;	/* bool: AdvAutonomousFlag */
     80 #ifdef MIP6
     81 	u_int routeraddr;	/* bool: RouterAddress */
     82 #endif
     83 	int prefixlen;
     84 	int origin;		/* from kernel or cofig */
     85 	struct in6_addr prefix;
     86 };
     87 
     88 struct soliciter {
     89 	struct soliciter *next;
     90 	struct sockaddr_in6 addr;
     91 };
     92 
     93 struct	rainfo {
     94 	/* pointer for list */
     95 	struct	rainfo *next;
     96 
     97 	/* timer related parameters */
     98 	struct rtadvd_timer *timer;
     99 	int initcounter; /* counter for the first few advertisements */
    100 	struct timeval lastsent; /* timestamp when the latest RA was sent */
    101 	int waiting;		/* number of RS waiting for RA */
    102 
    103 	/* interface information */
    104 	int	ifindex;
    105 	int	advlinkopt;	/* bool: whether include link-layer addr opt */
    106 	struct sockaddr_dl *sdl;
    107 	char	ifname[16];
    108 	int	phymtu;		/* mtu of the physical interface */
    109 
    110 	/* Router configuration variables */
    111 	u_short lifetime;	/* AdvDefaultLifetime */
    112 	u_int	maxinterval;	/* MaxRtrAdvInterval */
    113 	u_int	mininterval;	/* MinRtrAdvInterval */
    114 	int 	managedflg;	/* AdvManagedFlag */
    115 	int	otherflg;	/* AdvOtherConfigFlag */
    116 #ifdef MIP6
    117 	int	haflg;		/* HAFlag */
    118 #endif
    119 	u_int32_t linkmtu;	/* AdvLinkMTU */
    120 	u_int32_t reachabletime; /* AdvReachableTime */
    121 	u_int32_t retranstimer;	/* AdvRetransTimer */
    122 	u_int	hoplimit;	/* AdvCurHopLimit */
    123 	struct prefix prefix;	/* AdvPrefixList(link head) */
    124 	int	pfxs;		/* number of prefixes */
    125 
    126 #ifdef MIP6
    127 	u_short	hapref;		/* Home Agent Preference */
    128 	u_short	hatime;		/* Home Agent Lifetime */
    129 #endif
    130 
    131 	/* actual RA packet data and its length */
    132 	size_t ra_datalen;
    133 	u_char *ra_data;
    134 
    135 	/* statistics */
    136 	u_quad_t raoutput;	/* number of RAs sent */
    137 	u_quad_t rainput;	/* number of RAs received */
    138 	u_quad_t rainconsistent; /* number of RAs inconsistent with ours */
    139 	u_quad_t rsinput;	/* number of RSs received */
    140 
    141 	/* info about soliciter */
    142 	struct soliciter *soliciter;	/* recent solication source */
    143 };
    144 
    145 void ra_timeout __P((void *));
    146 void ra_timer_update __P((void *, struct timeval *));
    147 
    148 #ifdef MIP6
    149 extern int mobileip6;
    150 #endif
    151