rtadvd.h revision 1.11.10.1
1 /* $NetBSD: rtadvd.h,v 1.11.10.1 2017/07/14 06:24:16 snj Exp $ */ 2 /* $KAME: rtadvd.h,v 1.30 2005/10/17 14:40:02 suz 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_LINK "ff02::2" 35 #define ALLROUTERS_SITE "ff05::2" 36 37 #define IN6ADDR_SITELOCAL_ALLROUTERS_INIT \ 38 {{{ 0xff, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 39 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}} 40 41 //extern struct sockaddr_in6 sin6_linklocal_allnodes; 42 //extern struct sockaddr_in6 sin6_linklocal_allrouters; 43 extern struct sockaddr_in6 sin6_sitelocal_allrouters; 44 45 /* protocol constants and default values */ 46 #define DEF_MAXRTRADVINTERVAL 600 47 #define DEF_ADVLINKMTU 0 48 #define DEF_ADVREACHABLETIME 0 49 #define DEF_ADVRETRANSTIMER 0 50 #define DEF_ADVCURHOPLIMIT 64 51 #define DEF_ADVVALIDLIFETIME 2592000 52 #define DEF_ADVPREFERREDLIFETIME 604800 53 #define DEF_ADVROUTERLIFETIME 1800 54 55 #define MAXROUTERLIFETIME 9000 56 #define MIN_MAXINTERVAL 4 57 #define MAX_MAXINTERVAL 1800 58 #define MIN_MININTERVAL 3 59 #define MAXREACHABLETIME 3600000 60 61 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 62 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 63 #define MAX_FINAL_RTR_ADVERTISEMENTS 3 64 #define MIN_DELAY_BETWEEN_RAS 3 65 #define MAX_RA_DELAY_TIME 500000 /* usec */ 66 67 #define PREFIX_FROM_KERNEL 1 68 #define PREFIX_FROM_CONFIG 2 69 #define PREFIX_FROM_DYNAMIC 3 70 71 struct prefix { 72 TAILQ_ENTRY(prefix) next; 73 74 struct rainfo *rainfo; /* back pointer to the interface */ 75 76 struct rtadvd_timer *timer; /* expiration timer. used when a prefix 77 * derived from the kernel is deleted. 78 */ 79 80 uint32_t validlifetime; /* AdvValidLifetime */ 81 long vltimeexpire; /* expiration of vltime; decrement case only */ 82 uint32_t preflifetime; /* AdvPreferredLifetime */ 83 long pltimeexpire; /* expiration of pltime; decrement case only */ 84 uint16_t onlinkflg; /* bool: AdvOnLinkFlag */ 85 uint16_t autoconfflg; /* bool: AdvAutonomousFlag */ 86 int prefixlen; 87 int origin; /* from kernel or config */ 88 struct in6_addr prefix; 89 }; 90 91 struct rtinfo { 92 TAILQ_ENTRY(rtinfo) next; 93 94 uint32_t ltime; /* route lifetime */ 95 uint16_t rtpref; /* route preference */ 96 int prefixlen; 97 struct in6_addr prefix; 98 }; 99 100 struct rdnss_addr { 101 TAILQ_ENTRY(rdnss_addr) next; 102 103 struct in6_addr addr; 104 }; 105 106 struct rdnss { 107 TAILQ_ENTRY(rdnss) next; 108 109 TAILQ_HEAD(, rdnss_addr) list; 110 uint32_t lifetime; 111 }; 112 113 struct dnssl_domain { 114 TAILQ_ENTRY(dnssl_domain) next; 115 116 int len; 117 char domain[256]; 118 }; 119 120 struct dnssl { 121 TAILQ_ENTRY(dnssl) next; 122 123 TAILQ_HEAD(, dnssl_domain) list; 124 uint32_t lifetime; 125 }; 126 127 struct soliciter { 128 TAILQ_ENTRY(soliciter) next; 129 130 struct sockaddr_in6 addr; 131 }; 132 133 struct rainfo { 134 TAILQ_ENTRY(rainfo) next; 135 136 /* timer related parameters */ 137 struct rtadvd_timer *timer; 138 int initcounter; /* counter for the first few advertisements */ 139 struct timeval lastsent; /* timestamp when the latest RA was sent */ 140 int waiting; /* number of RS waiting for RA */ 141 142 /* interface information */ 143 uint16_t ifindex; 144 int advlinkopt; /* bool: whether include link-layer addr opt */ 145 struct sockaddr_dl *sdl; 146 char ifname[16]; 147 uint32_t phymtu; /* mtu of the physical interface */ 148 149 /* Router configuration variables */ 150 uint16_t lifetime; /* AdvDefaultLifetime */ 151 uint16_t maxinterval; /* MaxRtrAdvInterval */ 152 uint16_t mininterval; /* MinRtrAdvInterval */ 153 int managedflg; /* AdvManagedFlag */ 154 int otherflg; /* AdvOtherConfigFlag */ 155 156 int rtpref; /* router preference */ 157 uint32_t linkmtu; /* AdvLinkMTU */ 158 uint32_t reachabletime; /* AdvReachableTime */ 159 uint32_t retranstimer; /* AdvRetransTimer */ 160 uint16_t hoplimit; /* AdvCurHopLimit */ 161 TAILQ_HEAD(, prefix) prefix; /* AdvPrefixList(link head) */ 162 int pfxs; 163 uint16_t clockskew;/* used for consisitency check of lifetimes */ 164 165 TAILQ_HEAD(, rtinfo) route; 166 TAILQ_HEAD(, rdnss) rdnss; /* RDNSS list */ 167 TAILQ_HEAD(, dnssl) dnssl; /* DNS Search List */ 168 169 /* actual RA packet data and its length */ 170 size_t ra_datalen; 171 char *ra_data; 172 173 /* statistics */ 174 uint64_t raoutput; /* number of RAs sent */ 175 uint64_t rainput; /* number of RAs received */ 176 uint64_t rainconsistent; /* number of RAs inconsistent with ours */ 177 uint64_t rsinput; /* number of RSs received */ 178 179 /* info about soliciter */ 180 TAILQ_HEAD(, soliciter) soliciter; /* recent solication source */ 181 }; 182 183 extern TAILQ_HEAD(ralist_head_t, rainfo) ralist; 184 185 struct rtadvd_timer *ra_timeout(void *); 186 void ra_timer_update(void *, struct timeval *); 187 188 int prefix_match(struct in6_addr *, int, struct in6_addr *, int); 189 struct rainfo *if_indextorainfo(unsigned int); 190 struct prefix *find_prefix(struct rainfo *, struct in6_addr *, int); 191
Indexes created Wed Oct 15 16:09:53 GMT 2025