nd6.h revision 1.16
1 1.16 itojun /* $NetBSD: nd6.h,v 1.16 2001/01/17 04:05:45 itojun Exp $ */ 2 1.15 itojun /* $KAME: nd6.h,v 1.23 2000/06/04 12:54:57 itojun Exp $ */ 3 1.3 thorpej 4 1.2 itojun /* 5 1.2 itojun * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 1.2 itojun * All rights reserved. 7 1.11 itojun * 8 1.2 itojun * Redistribution and use in source and binary forms, with or without 9 1.2 itojun * modification, are permitted provided that the following conditions 10 1.2 itojun * are met: 11 1.2 itojun * 1. Redistributions of source code must retain the above copyright 12 1.2 itojun * notice, this list of conditions and the following disclaimer. 13 1.2 itojun * 2. Redistributions in binary form must reproduce the above copyright 14 1.2 itojun * notice, this list of conditions and the following disclaimer in the 15 1.2 itojun * documentation and/or other materials provided with the distribution. 16 1.2 itojun * 3. Neither the name of the project nor the names of its contributors 17 1.2 itojun * may be used to endorse or promote products derived from this software 18 1.2 itojun * without specific prior written permission. 19 1.11 itojun * 20 1.2 itojun * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 1.2 itojun * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 1.2 itojun * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 1.2 itojun * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 1.2 itojun * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 1.2 itojun * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 1.2 itojun * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 1.2 itojun * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 1.2 itojun * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 1.2 itojun * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 1.2 itojun * SUCH DAMAGE. 31 1.2 itojun */ 32 1.2 itojun 33 1.2 itojun #ifndef _NETINET6_ND6_H_ 34 1.2 itojun #define _NETINET6_ND6_H_ 35 1.2 itojun 36 1.9 itojun /* see net/route.h, or net/if_inarp.h */ 37 1.9 itojun #ifndef RTF_ANNOUNCE 38 1.9 itojun #define RTF_ANNOUNCE RTF_PROTO2 39 1.9 itojun #endif 40 1.9 itojun 41 1.2 itojun #include <sys/queue.h> 42 1.10 thorpej #include <sys/callout.h> 43 1.2 itojun 44 1.2 itojun struct llinfo_nd6 { 45 1.2 itojun struct llinfo_nd6 *ln_next; 46 1.2 itojun struct llinfo_nd6 *ln_prev; 47 1.2 itojun struct rtentry *ln_rt; 48 1.2 itojun struct mbuf *ln_hold; /* last packet until resolved/timeout */ 49 1.2 itojun long ln_asked; /* number of queries already sent for this addr */ 50 1.2 itojun u_long ln_expire; /* lifetime for NDP state transition */ 51 1.2 itojun short ln_state; /* reachability state */ 52 1.2 itojun short ln_router; /* 2^0: ND6 router bit */ 53 1.15 itojun int ln_byhint; /* # of times we made it reachable by UL hint */ 54 1.2 itojun }; 55 1.2 itojun 56 1.2 itojun #define ND6_LLINFO_NOSTATE -2 57 1.2 itojun #define ND6_LLINFO_WAITDELETE -1 58 1.2 itojun #define ND6_LLINFO_INCOMPLETE 0 59 1.2 itojun #define ND6_LLINFO_REACHABLE 1 60 1.2 itojun #define ND6_LLINFO_STALE 2 61 1.2 itojun #define ND6_LLINFO_DELAY 3 62 1.2 itojun #define ND6_LLINFO_PROBE 4 63 1.2 itojun 64 1.6 itojun #define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE) 65 1.6 itojun 66 1.2 itojun struct nd_ifinfo { 67 1.2 itojun u_int32_t linkmtu; /* LinkMTU */ 68 1.2 itojun u_int32_t maxmtu; /* Upper bound of LinkMTU */ 69 1.2 itojun u_int32_t basereachable; /* BaseReachableTime */ 70 1.2 itojun u_int32_t reachable; /* Reachable Time */ 71 1.2 itojun u_int32_t retrans; /* Retrans Timer */ 72 1.12 itojun u_int32_t flags; /* Flags */ 73 1.6 itojun int recalctm; /* BaseReacable re-calculation timer */ 74 1.2 itojun u_int8_t chlim; /* CurHopLimit */ 75 1.2 itojun u_int8_t receivedra; 76 1.2 itojun }; 77 1.12 itojun 78 1.12 itojun #define ND6_IFF_PERFORMNUD 0x1 79 1.2 itojun 80 1.2 itojun struct in6_nbrinfo { 81 1.2 itojun char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */ 82 1.2 itojun struct in6_addr addr; /* IPv6 address of the neighbor */ 83 1.2 itojun long asked; /* number of queries already sent for this addr */ 84 1.2 itojun int isrouter; /* if it acts as a router */ 85 1.2 itojun int state; /* reachability state */ 86 1.2 itojun int expire; /* lifetime for NDP state transition */ 87 1.2 itojun }; 88 1.2 itojun 89 1.2 itojun #define DRLSTSIZ 10 90 1.2 itojun #define PRLSTSIZ 10 91 1.2 itojun struct in6_drlist { 92 1.2 itojun char ifname[IFNAMSIZ]; 93 1.2 itojun struct { 94 1.2 itojun struct in6_addr rtaddr; 95 1.2 itojun u_char flags; 96 1.2 itojun u_short rtlifetime; 97 1.2 itojun u_long expire; 98 1.2 itojun u_short if_index; 99 1.2 itojun } defrouter[DRLSTSIZ]; 100 1.2 itojun }; 101 1.2 itojun 102 1.2 itojun struct in6_prlist { 103 1.2 itojun char ifname[IFNAMSIZ]; 104 1.2 itojun struct { 105 1.2 itojun struct in6_addr prefix; 106 1.2 itojun struct prf_ra raflags; 107 1.2 itojun u_char prefixlen; 108 1.9 itojun u_char origin; 109 1.2 itojun u_long vltime; 110 1.2 itojun u_long pltime; 111 1.2 itojun u_long expire; 112 1.2 itojun u_short if_index; 113 1.2 itojun u_short advrtrs; /* number of advertisement routers */ 114 1.2 itojun struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */ 115 1.2 itojun } prefix[PRLSTSIZ]; 116 1.2 itojun }; 117 1.2 itojun 118 1.2 itojun struct in6_ndireq { 119 1.2 itojun char ifname[IFNAMSIZ]; 120 1.2 itojun struct nd_ifinfo ndi; 121 1.2 itojun }; 122 1.2 itojun 123 1.6 itojun struct in6_ndifreq { 124 1.6 itojun char ifname[IFNAMSIZ]; 125 1.6 itojun u_long ifindex; 126 1.6 itojun }; 127 1.6 itojun 128 1.6 itojun 129 1.2 itojun /* protocol constants */ 130 1.2 itojun #define MAX_RTR_SOLICITATION_DELAY 1 /*1sec*/ 131 1.2 itojun #define RTR_SOLICITATION_INTERVAL 4 /*4sec*/ 132 1.2 itojun #define MAX_RTR_SOLICITATIONS 3 133 1.2 itojun 134 1.2 itojun #define ND6_INFINITE_LIFETIME 0xffffffff 135 1.2 itojun 136 1.2 itojun #ifdef _KERNEL 137 1.2 itojun /* node constants */ 138 1.2 itojun #define MAX_REACHABLE_TIME 3600000 /* msec */ 139 1.2 itojun #define REACHABLE_TIME 30000 /* msec */ 140 1.2 itojun #define RETRANS_TIMER 1000 /* msec */ 141 1.2 itojun #define MIN_RANDOM_FACTOR 512 /* 1024 * 0.5 */ 142 1.2 itojun #define MAX_RANDOM_FACTOR 1536 /* 1024 * 1.5 */ 143 1.2 itojun #define ND_COMPUTE_RTIME(x) \ 144 1.2 itojun (((MIN_RANDOM_FACTOR * (x >> 10)) + (random() & \ 145 1.2 itojun ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000) 146 1.2 itojun 147 1.6 itojun TAILQ_HEAD(nd_drhead, nd_defrouter); 148 1.2 itojun struct nd_defrouter { 149 1.6 itojun TAILQ_ENTRY(nd_defrouter) dr_entry; 150 1.2 itojun struct in6_addr rtaddr; 151 1.2 itojun u_char flags; 152 1.2 itojun u_short rtlifetime; 153 1.2 itojun u_long expire; 154 1.2 itojun struct ifnet *ifp; 155 1.2 itojun }; 156 1.2 itojun 157 1.2 itojun struct nd_prefix { 158 1.6 itojun struct ifnet *ndpr_ifp; 159 1.2 itojun LIST_ENTRY(nd_prefix) ndpr_entry; 160 1.2 itojun struct sockaddr_in6 ndpr_prefix; /* prefix */ 161 1.2 itojun struct in6_addr ndpr_mask; /* netmask derived from the prefix */ 162 1.2 itojun struct in6_addr ndpr_addr; /* address that is derived from the prefix */ 163 1.2 itojun u_int32_t ndpr_vltime; /* advertised valid lifetime */ 164 1.2 itojun u_int32_t ndpr_pltime; /* advertised preferred lifetime */ 165 1.2 itojun time_t ndpr_expire; /* expiration time of the prefix */ 166 1.2 itojun time_t ndpr_preferred; /* preferred time of the prefix */ 167 1.6 itojun struct prf_ra ndpr_flags; 168 1.2 itojun /* list of routers that advertise the prefix: */ 169 1.2 itojun LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs; 170 1.6 itojun u_char ndpr_plen; 171 1.2 itojun struct ndpr_stateflags { 172 1.2 itojun /* if this prefix can be regarded as on-link */ 173 1.2 itojun u_char onlink : 1; 174 1.2 itojun } ndpr_stateflags; 175 1.2 itojun }; 176 1.2 itojun 177 1.2 itojun #define ndpr_next ndpr_entry.le_next 178 1.2 itojun 179 1.6 itojun #define ndpr_raf ndpr_flags 180 1.6 itojun #define ndpr_raf_onlink ndpr_flags.onlink 181 1.6 itojun #define ndpr_raf_auto ndpr_flags.autonomous 182 1.2 itojun 183 1.2 itojun #define ndpr_statef_onlink ndpr_stateflags.onlink 184 1.2 itojun #define ndpr_statef_addmark ndpr_stateflags.addmark 185 1.2 itojun 186 1.2 itojun /* 187 1.2 itojun * We keep expired prefix for certain amount of time, for validation purposes. 188 1.2 itojun * 1800s = MaxRtrAdvInterval 189 1.2 itojun */ 190 1.2 itojun #define NDPR_KEEP_EXPIRED (1800 * 2) 191 1.2 itojun 192 1.2 itojun /* 193 1.2 itojun * Message format for use in obtaining information about prefixes 194 1.2 itojun * from inet6 sysctl function 195 1.2 itojun */ 196 1.2 itojun struct inet6_ndpr_msghdr { 197 1.2 itojun u_short inpm_msglen; /* to skip over non-understood messages */ 198 1.2 itojun u_char inpm_version; /* future binary compatability */ 199 1.2 itojun u_char inpm_type; /* message type */ 200 1.2 itojun struct in6_addr inpm_prefix; 201 1.2 itojun u_long prm_vltim; 202 1.2 itojun u_long prm_pltime; 203 1.2 itojun u_long prm_expire; 204 1.2 itojun u_long prm_preferred; 205 1.2 itojun struct in6_prflags prm_flags; 206 1.2 itojun u_short prm_index; /* index for associated ifp */ 207 1.2 itojun u_char prm_plen; /* length of prefix in bits */ 208 1.2 itojun }; 209 1.2 itojun 210 1.2 itojun #define prm_raf_onlink prm_flags.prf_ra.onlink 211 1.2 itojun #define prm_raf_auto prm_flags.prf_ra.autonomous 212 1.2 itojun 213 1.2 itojun #define prm_statef_onlink prm_flags.prf_state.onlink 214 1.2 itojun 215 1.2 itojun #define prm_rrf_decrvalid prm_flags.prf_rr.decrvalid 216 1.2 itojun #define prm_rrf_decrprefd prm_flags.prf_rr.decrprefd 217 1.2 itojun 218 1.2 itojun #define ifpr2ndpr(ifpr) ((struct nd_prefix *)(ifpr)) 219 1.2 itojun #define ndpr2ifpr(ndpr) ((struct ifprefix *)(ndpr)) 220 1.2 itojun 221 1.2 itojun struct nd_pfxrouter { 222 1.2 itojun LIST_ENTRY(nd_pfxrouter) pfr_entry; 223 1.2 itojun #define pfr_next pfr_entry.le_next 224 1.2 itojun struct nd_defrouter *router; 225 1.2 itojun }; 226 1.2 itojun 227 1.2 itojun LIST_HEAD(nd_prhead, nd_prefix); 228 1.2 itojun 229 1.2 itojun /* nd6.c */ 230 1.2 itojun extern int nd6_prune; 231 1.2 itojun extern int nd6_delay; 232 1.2 itojun extern int nd6_umaxtries; 233 1.2 itojun extern int nd6_mmaxtries; 234 1.2 itojun extern int nd6_useloopback; 235 1.15 itojun extern int nd6_maxnudhint; 236 1.2 itojun extern struct llinfo_nd6 llinfo_nd6; 237 1.2 itojun extern struct nd_ifinfo *nd_ifinfo; 238 1.2 itojun extern struct nd_drhead nd_defrouter; 239 1.2 itojun extern struct nd_prhead nd_prefix; 240 1.10 thorpej 241 1.10 thorpej extern struct callout nd6_timer_ch; 242 1.2 itojun 243 1.6 itojun /* nd6_rtr.c */ 244 1.6 itojun extern int nd6_defifindex; 245 1.6 itojun 246 1.2 itojun union nd_opts { 247 1.2 itojun struct nd_opt_hdr *nd_opt_array[9]; 248 1.2 itojun struct { 249 1.2 itojun struct nd_opt_hdr *zero; 250 1.2 itojun struct nd_opt_hdr *src_lladdr; 251 1.2 itojun struct nd_opt_hdr *tgt_lladdr; 252 1.2 itojun struct nd_opt_prefix_info *pi_beg;/* multiple opts, start */ 253 1.2 itojun struct nd_opt_rd_hdr *rh; 254 1.2 itojun struct nd_opt_mtu *mtu; 255 1.2 itojun struct nd_opt_hdr *search; /* multiple opts */ 256 1.2 itojun struct nd_opt_hdr *last; /* multiple opts */ 257 1.2 itojun int done; 258 1.2 itojun struct nd_opt_prefix_info *pi_end;/* multiple opts, end */ 259 1.2 itojun } nd_opt_each; 260 1.2 itojun }; 261 1.2 itojun #define nd_opts_src_lladdr nd_opt_each.src_lladdr 262 1.2 itojun #define nd_opts_tgt_lladdr nd_opt_each.tgt_lladdr 263 1.2 itojun #define nd_opts_pi nd_opt_each.pi_beg 264 1.2 itojun #define nd_opts_pi_end nd_opt_each.pi_end 265 1.2 itojun #define nd_opts_rh nd_opt_each.rh 266 1.2 itojun #define nd_opts_mtu nd_opt_each.mtu 267 1.2 itojun #define nd_opts_search nd_opt_each.search 268 1.2 itojun #define nd_opts_last nd_opt_each.last 269 1.2 itojun #define nd_opts_done nd_opt_each.done 270 1.2 itojun 271 1.2 itojun /* XXX: need nd6_var.h?? */ 272 1.2 itojun /* nd6.c */ 273 1.2 itojun void nd6_init __P((void)); 274 1.2 itojun void nd6_ifattach __P((struct ifnet *)); 275 1.13 itojun int nd6_is_addr_neighbor __P((struct sockaddr_in6 *, struct ifnet *)); 276 1.2 itojun void nd6_option_init __P((void *, int, union nd_opts *)); 277 1.2 itojun struct nd_opt_hdr *nd6_option __P((union nd_opts *)); 278 1.2 itojun int nd6_options __P((union nd_opts *)); 279 1.2 itojun struct rtentry *nd6_lookup __P((struct in6_addr *, int, struct ifnet *)); 280 1.2 itojun void nd6_setmtu __P((struct ifnet *)); 281 1.2 itojun void nd6_timer __P((void *)); 282 1.8 itojun void nd6_purge __P((struct ifnet *)); 283 1.2 itojun void nd6_free __P((struct rtentry *)); 284 1.15 itojun void nd6_nud_hint __P((struct rtentry *, struct in6_addr *, int)); 285 1.2 itojun int nd6_resolve __P((struct ifnet *, struct rtentry *, 286 1.2 itojun struct mbuf *, struct sockaddr *, u_char *)); 287 1.16 itojun void nd6_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 288 1.16 itojun void nd6_p2p_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 289 1.2 itojun int nd6_ioctl __P((u_long, caddr_t, struct ifnet *)); 290 1.2 itojun struct rtentry *nd6_cache_lladdr __P((struct ifnet *, struct in6_addr *, 291 1.5 itojun char *, int, int, int)); 292 1.2 itojun /* for test */ 293 1.14 itojun int nd6_output __P((struct ifnet *, struct ifnet *, struct mbuf *, 294 1.14 itojun struct sockaddr_in6 *, struct rtentry *)); 295 1.2 itojun int nd6_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *, 296 1.2 itojun struct sockaddr *, u_char *)); 297 1.2 itojun 298 1.2 itojun /* nd6_nbr.c */ 299 1.2 itojun void nd6_na_input __P((struct mbuf *, int, int)); 300 1.2 itojun void nd6_na_output __P((struct ifnet *, struct in6_addr *, 301 1.9 itojun struct in6_addr *, u_long, int, struct sockaddr *)); 302 1.2 itojun void nd6_ns_input __P((struct mbuf *, int, int)); 303 1.2 itojun void nd6_ns_output __P((struct ifnet *, struct in6_addr *, 304 1.2 itojun struct in6_addr *, struct llinfo_nd6 *, int)); 305 1.2 itojun caddr_t nd6_ifptomac __P((struct ifnet *)); 306 1.2 itojun void nd6_dad_start __P((struct ifaddr *, int *)); 307 1.2 itojun void nd6_dad_duplicated __P((struct ifaddr *)); 308 1.2 itojun 309 1.2 itojun /* nd6_rtr.c */ 310 1.2 itojun void nd6_rs_input __P((struct mbuf *, int, int)); 311 1.2 itojun void nd6_ra_input __P((struct mbuf *, int, int)); 312 1.2 itojun void prelist_del __P((struct nd_prefix *)); 313 1.2 itojun void defrouter_addreq __P((struct nd_defrouter *)); 314 1.2 itojun void defrouter_delreq __P((struct nd_defrouter *, int)); 315 1.6 itojun void defrouter_select __P((void)); 316 1.2 itojun void defrtrlist_del __P((struct nd_defrouter *)); 317 1.2 itojun void prelist_remove __P((struct nd_prefix *)); 318 1.2 itojun int prelist_update __P((struct nd_prefix *, struct nd_defrouter *, 319 1.2 itojun struct mbuf *)); 320 1.6 itojun void pfxlist_onlink_check __P((void)); 321 1.2 itojun struct nd_defrouter *defrouter_lookup __P((struct in6_addr *, 322 1.2 itojun struct ifnet *)); 323 1.2 itojun int in6_ifdel __P((struct ifnet *, struct in6_addr *)); 324 1.2 itojun int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr)); 325 1.2 itojun void rt6_flush __P((struct in6_addr *, struct ifnet *)); 326 1.6 itojun int nd6_setdefaultiface __P((int)); 327 1.2 itojun 328 1.2 itojun #endif /* _KERNEL */ 329 1.2 itojun 330 1.2 itojun #endif /* _NETINET6_ND6_H_ */ 331
Indexes created Wed Sep 24 05:09:52 GMT 2025