usr.sbin/rtadvd/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 1.1.2.3 2002/06/29 18:59:53 ume Exp $
  32  * $DragonFly: src/usr.sbin/rtadvd/rtadvd.h,v 1.3 2003/11/03 19:31:42 eirikn Exp $
  33  */
  34
  35 #define ALLNODES "ff02::1"
  36 #define ALLROUTERS_LINK "ff02::2"
  37 #define ALLROUTERS_SITE "ff05::2"
  38 #define ANY "::"
  39 #define RTSOLLEN 8
  40
  41 /* protocol constants and default values */
  42 #define DEF_MAXRTRADVINTERVAL 600
  43 #define DEF_ADVLINKMTU 0
  44 #define DEF_ADVREACHABLETIME 0
  45 #define DEF_ADVRETRANSTIMER 0
  46 #define DEF_ADVCURHOPLIMIT 64
  47 #define DEF_ADVVALIDLIFETIME 2592000
  48 #define DEF_ADVPREFERREDLIFETIME 604800
  49
  50 /*XXX int-to-double comparison for INTERVAL items */
  51 #ifndef MIP6
  52 #define mobileip6 0
  53 #endif
  54
  55 #define MAXROUTERLIFETIME 9000
  56 #define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0)
  57 #define MAX_MAXINTERVAL 1800
  58 #define MIN_MININTERVAL (mobileip6 ? 0.5 : 3)
  59 #define MAXREACHABLETIME 3600000
  60
  61 #ifndef MIP6
  62 #undef miobileip6
  63 #endif
  64
  65 #define MAX_INITIAL_RTR_ADVERT_INTERVAL  16
  66 #define MAX_INITIAL_RTR_ADVERTISEMENTS    3
  67 #define MAX_FINAL_RTR_ADVERTISEMENTS      3
  68 #define MIN_DELAY_BETWEEN_RAS             3
  69 #define MAX_RA_DELAY_TIME                 500000 /* usec */
  70
  71 #define PREFIX_FROM_KERNEL 1
  72 #define PREFIX_FROM_CONFIG 2
  73 #define PREFIX_FROM_DYNAMIC 3
  74
  75 struct prefix {
  76         struct prefix *next;    /* forward link */
  77         struct prefix *prev;    /* previous link */
  78
  79         struct rainfo *rainfo;  /* back pointer to the interface */
  80
  81         struct rtadvd_timer *timer; /* expiration timer.  used when a prefix
  82                                      * derived from the kernel is deleted.
  83                                      */
  84
  85         u_int32_t validlifetime; /* AdvValidLifetime */
  86         long    vltimeexpire;   /* expiration of vltime; decrement case only */
  87         u_int32_t preflifetime; /* AdvPreferredLifetime */
  88         long    pltimeexpire;   /* expiration of pltime; decrement case only */
  89         u_int onlinkflg;        /* bool: AdvOnLinkFlag */
  90         u_int autoconfflg;      /* bool: AdvAutonomousFlag */
  91 #ifdef MIP6
  92         u_int routeraddr;       /* bool: RouterAddress */
  93 #endif
  94         int prefixlen;
  95         int origin;             /* from kernel or cofig */
  96         struct in6_addr prefix;
  97 };
  98
  99 struct rtinfo {
 100         struct rtinfo *prev;    /* previous link */
 101         struct rtinfo *next;    /* forward link */
 102
 103         u_int32_t ltime;        /* route lifetime */
 104         u_int rtpref;           /* router preference */
 105         int prefixlen;
 106         struct in6_addr prefix;
 107 };
 108
 109 struct soliciter {
 110         struct soliciter *next;
 111         struct sockaddr_in6 addr;
 112 };
 113
 114 struct  rainfo {
 115         /* pointer for list */
 116         struct  rainfo *next;
 117
 118         /* timer related parameters */
 119         struct rtadvd_timer *timer;
 120         int initcounter; /* counter for the first few advertisements */
 121         struct timeval lastsent; /* timestamp when the latest RA was sent */
 122         int waiting;            /* number of RS waiting for RA */
 123
 124         /* interface information */
 125         int     ifindex;
 126         int     advlinkopt;     /* bool: whether include link-layer addr opt */
 127         struct sockaddr_dl *sdl;
 128         char    ifname[16];
 129         int     phymtu;         /* mtu of the physical interface */
 130
 131         /* Router configuration variables */
 132         u_short lifetime;       /* AdvDefaultLifetime */
 133         u_int   maxinterval;    /* MaxRtrAdvInterval */
 134         u_int   mininterval;    /* MinRtrAdvInterval */
 135         int     managedflg;     /* AdvManagedFlag */
 136         int     otherflg;       /* AdvOtherConfigFlag */
 137 #ifdef MIP6
 138         int     haflg;          /* HAFlag */
 139 #endif
 140         int     rtpref;         /* router preference */
 141         u_int32_t linkmtu;      /* AdvLinkMTU */
 142         u_int32_t reachabletime; /* AdvReachableTime */
 143         u_int32_t retranstimer; /* AdvRetransTimer */
 144         u_int   hoplimit;       /* AdvCurHopLimit */
 145         struct prefix prefix;   /* AdvPrefixList(link head) */
 146         int     pfxs;           /* number of prefixes */
 147         long    clockskew;      /* used for consisitency check of lifetimes */
 148
 149 #ifdef MIP6
 150         u_short hapref;         /* Home Agent Preference */
 151         u_short hatime;         /* Home Agent Lifetime */
 152 #endif
 153         struct rtinfo route;    /* route information option (link head) */
 154         int     routes;         /* number of route information options */
 155
 156         /* actual RA packet data and its length */
 157         size_t ra_datalen;
 158         u_char *ra_data;
 159
 160         /* statistics */
 161         u_quad_t raoutput;      /* number of RAs sent */
 162         u_quad_t rainput;       /* number of RAs received */
 163         u_quad_t rainconsistent; /* number of RAs inconsistent with ours */
 164         u_quad_t rsinput;       /* number of RSs received */
 165
 166         /* info about soliciter */
 167         struct soliciter *soliciter;    /* recent solication source */
 168 };
 169
 170 struct rtadvd_timer *ra_timeout(void *);
 171 void ra_timer_update(void *, struct timeval *);
 172
 173 int prefix_match(struct in6_addr *, int, struct in6_addr *, int);
 174 struct rainfo *if_indextorainfo(int);
 175 struct prefix *find_prefix(struct rainfo *, struct in6_addr *, int);
 176
 177 extern struct in6_addr in6a_site_allrouters;
 178 #ifdef MIP6
 179 extern int mobileip6;
 180 #endif