rtadvd.tproj/rtadvd.h

   1 /*      $KAME: rtadvd.h,v 1.16 2001/04/10 15:08:31 suz Exp $    */
   2
   3 /*
   4  * Copyright (C) 1998 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $FreeBSD: src/usr.sbin/rtadvd/rtadvd.h,v 1.1.2.2 2001/07/03 11:02:14 ume Exp $
  32  */
  33
  34 #define ALLNODES "ff02::1"
  35 #define ALLROUTERS_LINK "ff02::2"
  36 #define ALLROUTERS_SITE "ff05::2"
  37 #define ANY "::"
  38 #define RTSOLLEN 8
  39
  40 /* protocol constants and default values */
  41 #define DEF_MAXRTRADVINTERVAL 600
  42 #define DEF_ADVLINKMTU 0
  43 #define DEF_ADVREACHABLETIME 0
  44 #define DEF_ADVRETRANSTIMER 0
  45 #define DEF_ADVCURHOPLIMIT 64
  46 #define DEF_ADVVALIDLIFETIME 2592000
  47 #define DEF_ADVPREFERREDLIFETIME 604800
  48
  49 /*XXX int-to-double comparison for INTERVAL items */
  50 #ifndef MIP6
  51 #define mobileip6 0
  52 #endif
  53
  54 #define MAXROUTERLIFETIME 9000
  55 #define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0)
  56 #define MAX_MAXINTERVAL 1800
  57 #define MIN_MININTERVAL (mobileip6 ? 0.5 : 3)
  58 #define MAXREACHABLETIME 3600000
  59
  60 #ifndef MIP6
  61 #undef miobileip6
  62 #endif
  63
  64 #define MAX_INITIAL_RTR_ADVERT_INTERVAL  16
  65 #define MAX_INITIAL_RTR_ADVERTISEMENTS    3
  66 #define MAX_FINAL_RTR_ADVERTISEMENTS      3
  67 #define MIN_DELAY_BETWEEN_RAS             3
  68 #define MAX_RA_DELAY_TIME                 500000 /* usec */
  69
  70 #define PREFIX_FROM_KERNEL 1
  71 #define PREFIX_FROM_CONFIG 2
  72 #define PREFIX_FROM_DYNAMIC 3
  73
  74 struct prefix {
  75         struct prefix *next;    /* forward link */
  76         struct prefix *prev;    /* previous link */
  77
  78         u_int32_t validlifetime; /* AdvValidLifetime */
  79         long    vltimeexpire;   /* expiration of vltime; decrement case only */
  80         u_int32_t preflifetime; /* AdvPreferredLifetime */
  81         long    pltimeexpire;   /* expiration of pltime; decrement case only */
  82         u_int onlinkflg;        /* bool: AdvOnLinkFlag */
  83         u_int autoconfflg;      /* bool: AdvAutonomousFlag */
  84 #ifdef MIP6
  85         u_int routeraddr;       /* bool: RouterAddress */
  86 #endif
  87         int prefixlen;
  88         int origin;             /* from kernel or cofig */
  89         struct in6_addr prefix;
  90 };
  91
  92 struct rtinfo {
  93         struct rtinfo *prev;    /* previous link */
  94         struct rtinfo *next;    /* forward link */
  95
  96         u_int32_t ltime;        /* route lifetime */
  97         u_int rtpref;           /* router preference */
  98         int prefixlen;
  99         struct in6_addr prefix;
 100 };
 101
 102 struct soliciter {
 103         struct soliciter *next;
 104         struct sockaddr_in6 addr;
 105 };
 106
 107 struct  rainfo {
 108         /* pointer for list */
 109         struct  rainfo *next;
 110
 111         /* timer related parameters */
 112         struct rtadvd_timer *timer;
 113         int initcounter; /* counter for the first few advertisements */
 114         struct timeval lastsent; /* timestamp when the latest RA was sent */
 115         int waiting;            /* number of RS waiting for RA */
 116
 117         /* interface information */
 118         int     ifindex;
 119         int     advlinkopt;     /* bool: whether include link-layer addr opt */
 120         struct sockaddr_dl *sdl;
 121         char    ifname[16];
 122         int     phymtu;         /* mtu of the physical interface */
 123
 124         /* Router configuration variables */
 125         u_short lifetime;       /* AdvDefaultLifetime */
 126         u_int   maxinterval;    /* MaxRtrAdvInterval */
 127         u_int   mininterval;    /* MinRtrAdvInterval */
 128         int     managedflg;     /* AdvManagedFlag */
 129         int     otherflg;       /* AdvOtherConfigFlag */
 130 #ifdef MIP6
 131         int     haflg;          /* HAFlag */
 132 #endif
 133         int     rtpref;         /* router preference */
 134         u_int32_t linkmtu;      /* AdvLinkMTU */
 135         u_int32_t reachabletime; /* AdvReachableTime */
 136         u_int32_t retranstimer; /* AdvRetransTimer */
 137         u_int   hoplimit;       /* AdvCurHopLimit */
 138         struct prefix prefix;   /* AdvPrefixList(link head) */
 139         int     pfxs;           /* number of prefixes */
 140         long    clockskew;      /* used for consisitency check of lifetimes */
 141
 142 #ifdef MIP6
 143         u_short hapref;         /* Home Agent Preference */
 144         u_short hatime;         /* Home Agent Lifetime */
 145 #endif
 146         struct rtinfo route;    /* route information option (link head) */
 147         int     routes;         /* number of route information options */
 148
 149         /* actual RA packet data and its length */
 150         size_t ra_datalen;
 151         u_char *ra_data;
 152
 153         /* statistics */
 154         u_quad_t raoutput;      /* number of RAs sent */
 155         u_quad_t rainput;       /* number of RAs received */
 156         u_quad_t rainconsistent; /* number of RAs inconsistent with ours */
 157         u_quad_t rsinput;       /* number of RSs received */
 158
 159         /* info about soliciter */
 160         struct soliciter *soliciter;    /* recent solication source */
 161 };
 162
 163 void ra_timeout __P((void *));
 164 void ra_timer_update __P((void *, struct timeval *));
 165
 166 int prefix_match __P((struct in6_addr *, int, struct in6_addr *, int));
 167 struct rainfo *if_indextorainfo __P((int));
 168
 169 extern struct in6_addr in6a_site_allrouters;
 170 #ifdef MIP6
 171 extern int mobileip6;
 172 #endif