1 /* 2 * Copyright (C) 1998 WIDE Project. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the project nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #define ALLNODES "ff02::1" 33 #define ALLROUTERS "ff02::2" 34 #define ALLSITEROUTERS "ff05::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 #define MAXROUTERLIFETIME 9000 48 #define MIN_MAXINTERVAL 4 49 #define MAX_MAXINTERVAL 1800 50 #define MIN_MININTERVAL 3 51 #define MAXREACHABLETIME 3600000 52 53 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 54 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 55 #define MAX_FINAL_RTR_ADVERTISEMENTS 3 56 #define MIN_DELAY_BETWEEN_RAS 3 57 #define MAX_RA_DELAY_TIME 500000 /* usec */ 58 59 struct prefix { 60 struct prefix *next; /* forward link */ 61 struct prefix *prev; /* previous link */ 62 63 u_int32_t validlifetime; /* AdvValidLifetime */ 64 u_int32_t preflifetime; /* AdvPreferredLifetime */ 65 u_int onlinkflg; /* bool: AdvOnLinkFlag */ 66 u_int autoconfflg; /* bool: AdvAutonomousFlag */ 67 int prefixlen; 68 struct in6_addr prefix; 69 }; 70 71 struct rainfo { 72 /* pointer for list */ 73 struct rainfo *next; 74 75 /* timer related parameters */ 76 struct rtadvd_timer *timer; 77 int initcounter; /* counter for the first few advertisements */ 78 struct timeval lastsent; /* timestamp when the lates RA was sent */ 79 int waiting; /* number of RS waiting for RA */ 80 81 /* interface information */ 82 int ifindex; 83 int advlinkopt; /* bool: whether include link-layer addr opt */ 84 struct sockaddr_dl *sdl; 85 char ifname[16]; 86 int phymtu; /* mtu of the physical interface */ 87 88 /* Router configuration variables */ 89 u_short lifetime; /* AdvDefaultLifetime */ 90 u_int maxinterval; /* MaxRtrAdvInterval */ 91 u_int mininterval; /* MinRtrAdvInterval */ 92 int managedflg; /* AdvManagedFlag */ 93 int otherflg; /* AdvOtherConfigFlag */ 94 u_int32_t linkmtu; /* AdvLinkMTU */ 95 u_int32_t reachabletime; /* AdvReachableTime */ 96 u_int32_t retranstimer; /* AdvRetransTimer */ 97 u_int hoplimit; /* AdvCurHopLimit */ 98 struct prefix prefix; /* AdvPrefixList(link head) */ 99 int pfxs; /* number of prefixes */ 100 101 /* actual RA packet data and its length */ 102 size_t ra_datalen; 103 u_char *ra_data; 104 }; 105 106 void ra_timeout __P((void *)); 107 void ra_timer_update __P((void *, struct timeval *)); 108