nd6.h revision 1.2.2.3
1 1.2.2.3 thorpej /* $NetBSD: nd6.h,v 1.2.2.3 1999/08/02 22:36:06 thorpej Exp $ */ 2 1.2.2.3 thorpej 3 1.2.2.2 thorpej /* 4 1.2.2.2 thorpej * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 1.2.2.2 thorpej * All rights reserved. 6 1.2.2.2 thorpej * 7 1.2.2.2 thorpej * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 thorpej * modification, are permitted provided that the following conditions 9 1.2.2.2 thorpej * are met: 10 1.2.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 thorpej * documentation and/or other materials provided with the distribution. 15 1.2.2.2 thorpej * 3. Neither the name of the project nor the names of its contributors 16 1.2.2.2 thorpej * may be used to endorse or promote products derived from this software 17 1.2.2.2 thorpej * without specific prior written permission. 18 1.2.2.2 thorpej * 19 1.2.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 1.2.2.2 thorpej * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 1.2.2.2 thorpej * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 1.2.2.2 thorpej * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 1.2.2.2 thorpej * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 1.2.2.2 thorpej * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 1.2.2.2 thorpej * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 1.2.2.2 thorpej * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 1.2.2.2 thorpej * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 1.2.2.2 thorpej * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 1.2.2.2 thorpej * SUCH DAMAGE. 30 1.2.2.2 thorpej */ 31 1.2.2.2 thorpej 32 1.2.2.2 thorpej #ifndef _NETINET6_ND6_H_ 33 1.2.2.2 thorpej #define _NETINET6_ND6_H_ 34 1.2.2.2 thorpej 35 1.2.2.2 thorpej #include <sys/queue.h> 36 1.2.2.2 thorpej 37 1.2.2.2 thorpej struct llinfo_nd6 { 38 1.2.2.2 thorpej struct llinfo_nd6 *ln_next; 39 1.2.2.2 thorpej struct llinfo_nd6 *ln_prev; 40 1.2.2.2 thorpej struct rtentry *ln_rt; 41 1.2.2.2 thorpej struct mbuf *ln_hold; /* last packet until resolved/timeout */ 42 1.2.2.2 thorpej long ln_asked; /* number of queries already sent for this addr */ 43 1.2.2.2 thorpej u_long ln_expire; /* lifetime for NDP state transition */ 44 1.2.2.2 thorpej short ln_state; /* reachability state */ 45 1.2.2.2 thorpej short ln_router; /* 2^0: ND6 router bit */ 46 1.2.2.2 thorpej }; 47 1.2.2.2 thorpej 48 1.2.2.2 thorpej #define ND6_LLINFO_NOSTATE -2 49 1.2.2.2 thorpej #define ND6_LLINFO_WAITDELETE -1 50 1.2.2.2 thorpej #define ND6_LLINFO_INCOMPLETE 0 51 1.2.2.2 thorpej #define ND6_LLINFO_REACHABLE 1 52 1.2.2.2 thorpej #define ND6_LLINFO_STALE 2 53 1.2.2.2 thorpej #define ND6_LLINFO_DELAY 3 54 1.2.2.2 thorpej #define ND6_LLINFO_PROBE 4 55 1.2.2.2 thorpej 56 1.2.2.2 thorpej struct nd_ifinfo { 57 1.2.2.2 thorpej u_int32_t linkmtu; /* LinkMTU */ 58 1.2.2.2 thorpej u_int32_t maxmtu; /* Upper bound of LinkMTU */ 59 1.2.2.2 thorpej u_int32_t basereachable; /* BaseReachableTime */ 60 1.2.2.2 thorpej u_int32_t reachable; /* Reachable Time */ 61 1.2.2.2 thorpej u_int32_t retrans; /* Retrans Timer */ 62 1.2.2.2 thorpej int recalctm; /* BaseReacable re-calculation timer */ 63 1.2.2.2 thorpej u_int8_t chlim; /* CurHopLimit */ 64 1.2.2.2 thorpej u_int8_t receivedra; 65 1.2.2.2 thorpej }; 66 1.2.2.2 thorpej 67 1.2.2.2 thorpej struct in6_nbrinfo { 68 1.2.2.2 thorpej char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */ 69 1.2.2.2 thorpej struct in6_addr addr; /* IPv6 address of the neighbor */ 70 1.2.2.2 thorpej long asked; /* number of queries already sent for this addr */ 71 1.2.2.2 thorpej int isrouter; /* if it acts as a router */ 72 1.2.2.2 thorpej int state; /* reachability state */ 73 1.2.2.2 thorpej int expire; /* lifetime for NDP state transition */ 74 1.2.2.2 thorpej }; 75 1.2.2.2 thorpej 76 1.2.2.2 thorpej #define DRLSTSIZ 10 77 1.2.2.2 thorpej #define PRLSTSIZ 10 78 1.2.2.2 thorpej struct in6_drlist { 79 1.2.2.2 thorpej char ifname[IFNAMSIZ]; 80 1.2.2.2 thorpej struct { 81 1.2.2.2 thorpej struct in6_addr rtaddr; 82 1.2.2.2 thorpej u_char flags; 83 1.2.2.2 thorpej u_short rtlifetime; 84 1.2.2.2 thorpej u_long expire; 85 1.2.2.2 thorpej u_short if_index; 86 1.2.2.2 thorpej } defrouter[DRLSTSIZ]; 87 1.2.2.2 thorpej }; 88 1.2.2.2 thorpej 89 1.2.2.2 thorpej struct in6_prlist { 90 1.2.2.2 thorpej char ifname[IFNAMSIZ]; 91 1.2.2.2 thorpej struct { 92 1.2.2.2 thorpej struct in6_addr prefix; 93 1.2.2.2 thorpej struct prf_ra raflags; 94 1.2.2.2 thorpej u_char prefixlen; 95 1.2.2.2 thorpej u_long vltime; 96 1.2.2.2 thorpej u_long pltime; 97 1.2.2.2 thorpej u_long expire; 98 1.2.2.2 thorpej u_short if_index; 99 1.2.2.2 thorpej u_short advrtrs; /* number of advertisement routers */ 100 1.2.2.2 thorpej struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */ 101 1.2.2.2 thorpej } prefix[PRLSTSIZ]; 102 1.2.2.2 thorpej }; 103 1.2.2.2 thorpej 104 1.2.2.2 thorpej struct in6_ndireq { 105 1.2.2.2 thorpej char ifname[IFNAMSIZ]; 106 1.2.2.2 thorpej struct nd_ifinfo ndi; 107 1.2.2.2 thorpej }; 108 1.2.2.2 thorpej 109 1.2.2.2 thorpej /* protocol constants */ 110 1.2.2.2 thorpej #define MAX_RTR_SOLICITATION_DELAY 1 /*1sec*/ 111 1.2.2.2 thorpej #define RTR_SOLICITATION_INTERVAL 4 /*4sec*/ 112 1.2.2.2 thorpej #define MAX_RTR_SOLICITATIONS 3 113 1.2.2.2 thorpej 114 1.2.2.2 thorpej #define ND6_INFINITE_LIFETIME 0xffffffff 115 1.2.2.2 thorpej 116 1.2.2.2 thorpej #ifdef _KERNEL 117 1.2.2.2 thorpej /* node constants */ 118 1.2.2.2 thorpej #define MAX_REACHABLE_TIME 3600000 /* msec */ 119 1.2.2.2 thorpej #define REACHABLE_TIME 30000 /* msec */ 120 1.2.2.2 thorpej #define RETRANS_TIMER 1000 /* msec */ 121 1.2.2.2 thorpej #define MIN_RANDOM_FACTOR 512 /* 1024 * 0.5 */ 122 1.2.2.2 thorpej #define MAX_RANDOM_FACTOR 1536 /* 1024 * 1.5 */ 123 1.2.2.2 thorpej #define ND_COMPUTE_RTIME(x) \ 124 1.2.2.2 thorpej (((MIN_RANDOM_FACTOR * (x >> 10)) + (random() & \ 125 1.2.2.2 thorpej ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000) 126 1.2.2.2 thorpej 127 1.2.2.2 thorpej struct nd_defrouter { 128 1.2.2.2 thorpej LIST_ENTRY(nd_defrouter) dr_entry; 129 1.2.2.2 thorpej #define dr_next dr_entry.le_next 130 1.2.2.2 thorpej struct in6_addr rtaddr; 131 1.2.2.2 thorpej u_char flags; 132 1.2.2.2 thorpej u_short rtlifetime; 133 1.2.2.2 thorpej u_long expire; 134 1.2.2.2 thorpej struct ifnet *ifp; 135 1.2.2.2 thorpej }; 136 1.2.2.2 thorpej 137 1.2.2.2 thorpej struct nd_prefix { 138 1.2.2.2 thorpej struct ifprefix ndpr_ifpr; 139 1.2.2.2 thorpej LIST_ENTRY(nd_prefix) ndpr_entry; 140 1.2.2.2 thorpej struct sockaddr_in6 ndpr_prefix; /* prefix */ 141 1.2.2.2 thorpej struct in6_addr ndpr_mask; /* netmask derived from the prefix */ 142 1.2.2.2 thorpej struct in6_addr ndpr_addr; /* address that is derived from the prefix */ 143 1.2.2.2 thorpej u_int32_t ndpr_vltime; /* advertised valid lifetime */ 144 1.2.2.2 thorpej u_int32_t ndpr_pltime; /* advertised preferred lifetime */ 145 1.2.2.2 thorpej time_t ndpr_expire; /* expiration time of the prefix */ 146 1.2.2.2 thorpej time_t ndpr_preferred; /* preferred time of the prefix */ 147 1.2.2.2 thorpej struct in6_prflags ndpr_flags; 148 1.2.2.2 thorpej /* list of routers that advertise the prefix: */ 149 1.2.2.2 thorpej LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs; 150 1.2.2.2 thorpej u_char ndpr_origin; /* from where this prefix info is obtained */ 151 1.2.2.2 thorpej struct ndpr_stateflags { 152 1.2.2.2 thorpej /* if this prefix can be regarded as on-link */ 153 1.2.2.2 thorpej u_char onlink : 1; 154 1.2.2.2 thorpej /* if some prefix should be added to this prefix */ 155 1.2.2.2 thorpej u_char addmark : 1; 156 1.2.2.2 thorpej u_char delmark : 1; /* if this prefix will be deleted */ 157 1.2.2.2 thorpej } ndpr_stateflags; 158 1.2.2.2 thorpej }; 159 1.2.2.2 thorpej 160 1.2.2.2 thorpej #define ndpr_next ndpr_entry.le_next 161 1.2.2.2 thorpej #define ndpr_ifp ndpr_ifpr.ifpr_ifp 162 1.2.2.2 thorpej #define ndpr_plen ndpr_ifpr.ifpr_plen 163 1.2.2.2 thorpej 164 1.2.2.2 thorpej #define ndpr_raf ndpr_flags.prf_ra 165 1.2.2.2 thorpej #define ndpr_raf_onlink ndpr_flags.prf_ra.onlink 166 1.2.2.2 thorpej #define ndpr_raf_auto ndpr_flags.prf_ra.autonomous 167 1.2.2.2 thorpej 168 1.2.2.2 thorpej #define ndpr_statef_onlink ndpr_stateflags.onlink 169 1.2.2.2 thorpej #define ndpr_statef_addmark ndpr_stateflags.addmark 170 1.2.2.2 thorpej #define ndpr_statef_delmark ndpr_stateflags.delmark 171 1.2.2.2 thorpej 172 1.2.2.2 thorpej #define ndpr_rrf ndpr_flags.prf_rr 173 1.2.2.2 thorpej #define ndpr_rrf_decrvalid ndpr_flags.prf_rr.decrvalid 174 1.2.2.2 thorpej #define ndpr_rrf_decrprefd ndpr_flags.prf_rr.decrprefd 175 1.2.2.2 thorpej 176 1.2.2.2 thorpej /* 177 1.2.2.2 thorpej * We keep expired prefix for certain amount of time, for validation purposes. 178 1.2.2.2 thorpej * 1800s = MaxRtrAdvInterval 179 1.2.2.2 thorpej */ 180 1.2.2.2 thorpej #define NDPR_KEEP_EXPIRED (1800 * 2) 181 1.2.2.2 thorpej 182 1.2.2.2 thorpej /* 183 1.2.2.2 thorpej * Message format for use in obtaining information about prefixes 184 1.2.2.2 thorpej * from inet6 sysctl function 185 1.2.2.2 thorpej */ 186 1.2.2.2 thorpej struct inet6_ndpr_msghdr { 187 1.2.2.2 thorpej u_short inpm_msglen; /* to skip over non-understood messages */ 188 1.2.2.2 thorpej u_char inpm_version; /* future binary compatability */ 189 1.2.2.2 thorpej u_char inpm_type; /* message type */ 190 1.2.2.2 thorpej struct in6_addr inpm_prefix; 191 1.2.2.2 thorpej u_long prm_vltim; 192 1.2.2.2 thorpej u_long prm_pltime; 193 1.2.2.2 thorpej u_long prm_expire; 194 1.2.2.2 thorpej u_long prm_preferred; 195 1.2.2.2 thorpej struct in6_prflags prm_flags; 196 1.2.2.2 thorpej u_short prm_index; /* index for associated ifp */ 197 1.2.2.2 thorpej u_char prm_plen; /* length of prefix in bits */ 198 1.2.2.2 thorpej }; 199 1.2.2.2 thorpej 200 1.2.2.2 thorpej #define prm_raf_onlink prm_flags.prf_ra.onlink 201 1.2.2.2 thorpej #define prm_raf_auto prm_flags.prf_ra.autonomous 202 1.2.2.2 thorpej 203 1.2.2.2 thorpej #define prm_statef_onlink prm_flags.prf_state.onlink 204 1.2.2.2 thorpej 205 1.2.2.2 thorpej #define prm_rrf_decrvalid prm_flags.prf_rr.decrvalid 206 1.2.2.2 thorpej #define prm_rrf_decrprefd prm_flags.prf_rr.decrprefd 207 1.2.2.2 thorpej 208 1.2.2.2 thorpej #define ifpr2ndpr(ifpr) ((struct nd_prefix *)(ifpr)) 209 1.2.2.2 thorpej #define ndpr2ifpr(ndpr) ((struct ifprefix *)(ndpr)) 210 1.2.2.2 thorpej 211 1.2.2.2 thorpej struct nd_pfxrouter { 212 1.2.2.2 thorpej LIST_ENTRY(nd_pfxrouter) pfr_entry; 213 1.2.2.2 thorpej #define pfr_next pfr_entry.le_next 214 1.2.2.2 thorpej struct nd_defrouter *router; 215 1.2.2.2 thorpej }; 216 1.2.2.2 thorpej 217 1.2.2.2 thorpej LIST_HEAD(nd_drhead, nd_defrouter); 218 1.2.2.2 thorpej LIST_HEAD(nd_prhead, nd_prefix); 219 1.2.2.2 thorpej 220 1.2.2.2 thorpej /* nd6.c */ 221 1.2.2.2 thorpej extern int nd6_prune; 222 1.2.2.2 thorpej extern int nd6_delay; 223 1.2.2.2 thorpej extern int nd6_umaxtries; 224 1.2.2.2 thorpej extern int nd6_mmaxtries; 225 1.2.2.2 thorpej extern int nd6_useloopback; 226 1.2.2.2 thorpej extern int nd6_proxyall; 227 1.2.2.2 thorpej extern struct llinfo_nd6 llinfo_nd6; 228 1.2.2.2 thorpej extern struct nd_ifinfo *nd_ifinfo; 229 1.2.2.2 thorpej extern struct nd_drhead nd_defrouter; 230 1.2.2.2 thorpej extern struct nd_prhead nd_prefix; 231 1.2.2.2 thorpej 232 1.2.2.2 thorpej union nd_opts { 233 1.2.2.2 thorpej struct nd_opt_hdr *nd_opt_array[9]; 234 1.2.2.2 thorpej struct { 235 1.2.2.2 thorpej struct nd_opt_hdr *zero; 236 1.2.2.2 thorpej struct nd_opt_hdr *src_lladdr; 237 1.2.2.2 thorpej struct nd_opt_hdr *tgt_lladdr; 238 1.2.2.2 thorpej struct nd_opt_prefix_info *pi_beg;/* multiple opts, start */ 239 1.2.2.2 thorpej struct nd_opt_rd_hdr *rh; 240 1.2.2.2 thorpej struct nd_opt_mtu *mtu; 241 1.2.2.2 thorpej struct nd_opt_hdr *search; /* multiple opts */ 242 1.2.2.2 thorpej struct nd_opt_hdr *last; /* multiple opts */ 243 1.2.2.2 thorpej int done; 244 1.2.2.2 thorpej struct nd_opt_prefix_info *pi_end;/* multiple opts, end */ 245 1.2.2.2 thorpej } nd_opt_each; 246 1.2.2.2 thorpej }; 247 1.2.2.2 thorpej #define nd_opts_src_lladdr nd_opt_each.src_lladdr 248 1.2.2.2 thorpej #define nd_opts_tgt_lladdr nd_opt_each.tgt_lladdr 249 1.2.2.2 thorpej #define nd_opts_pi nd_opt_each.pi_beg 250 1.2.2.2 thorpej #define nd_opts_pi_end nd_opt_each.pi_end 251 1.2.2.2 thorpej #define nd_opts_rh nd_opt_each.rh 252 1.2.2.2 thorpej #define nd_opts_mtu nd_opt_each.mtu 253 1.2.2.2 thorpej #define nd_opts_search nd_opt_each.search 254 1.2.2.2 thorpej #define nd_opts_last nd_opt_each.last 255 1.2.2.2 thorpej #define nd_opts_done nd_opt_each.done 256 1.2.2.2 thorpej 257 1.2.2.2 thorpej /* XXX: need nd6_var.h?? */ 258 1.2.2.2 thorpej /* nd6.c */ 259 1.2.2.2 thorpej void nd6_init __P((void)); 260 1.2.2.2 thorpej void nd6_ifattach __P((struct ifnet *)); 261 1.2.2.3 thorpej int nd6_is_addr_neighbor __P((struct in6_addr *, struct ifnet *)); 262 1.2.2.2 thorpej void nd6_option_init __P((void *, int, union nd_opts *)); 263 1.2.2.2 thorpej struct nd_opt_hdr *nd6_option __P((union nd_opts *)); 264 1.2.2.2 thorpej int nd6_options __P((union nd_opts *)); 265 1.2.2.2 thorpej struct rtentry *nd6_lookup __P((struct in6_addr *, int, struct ifnet *)); 266 1.2.2.2 thorpej void nd6_setmtu __P((struct ifnet *)); 267 1.2.2.2 thorpej void nd6_timer __P((void *)); 268 1.2.2.2 thorpej void nd6_free __P((struct rtentry *)); 269 1.2.2.2 thorpej void nd6_nud_hint __P((struct rtentry *, struct in6_addr *)); 270 1.2.2.2 thorpej int nd6_resolve __P((struct ifnet *, struct rtentry *, 271 1.2.2.2 thorpej struct mbuf *, struct sockaddr *, u_char *)); 272 1.2.2.2 thorpej void nd6_rtrequest __P((int, struct rtentry *, struct sockaddr *)); 273 1.2.2.2 thorpej void nd6_p2p_rtrequest __P((int, struct rtentry *, struct sockaddr *)); 274 1.2.2.2 thorpej int nd6_ioctl __P((u_long, caddr_t, struct ifnet *)); 275 1.2.2.2 thorpej struct rtentry *nd6_cache_lladdr __P((struct ifnet *, struct in6_addr *, 276 1.2.2.3 thorpej char *, int, int, int)); 277 1.2.2.2 thorpej /* for test */ 278 1.2.2.2 thorpej int nd6_output __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *, 279 1.2.2.2 thorpej struct rtentry *)); 280 1.2.2.2 thorpej int nd6_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *, 281 1.2.2.2 thorpej struct sockaddr *, u_char *)); 282 1.2.2.2 thorpej 283 1.2.2.2 thorpej /* nd6_nbr.c */ 284 1.2.2.2 thorpej void nd6_na_input __P((struct mbuf *, int, int)); 285 1.2.2.2 thorpej void nd6_na_output __P((struct ifnet *, struct in6_addr *, 286 1.2.2.2 thorpej struct in6_addr *, u_long, int)); 287 1.2.2.2 thorpej void nd6_ns_input __P((struct mbuf *, int, int)); 288 1.2.2.2 thorpej void nd6_ns_output __P((struct ifnet *, struct in6_addr *, 289 1.2.2.2 thorpej struct in6_addr *, struct llinfo_nd6 *, int)); 290 1.2.2.2 thorpej caddr_t nd6_ifptomac __P((struct ifnet *)); 291 1.2.2.2 thorpej void nd6_dad_start __P((struct ifaddr *, int *)); 292 1.2.2.2 thorpej void nd6_dad_duplicated __P((struct ifaddr *)); 293 1.2.2.2 thorpej 294 1.2.2.2 thorpej /* nd6_rtr.c */ 295 1.2.2.2 thorpej void nd6_rs_input __P((struct mbuf *, int, int)); 296 1.2.2.2 thorpej void nd6_ra_input __P((struct mbuf *, int, int)); 297 1.2.2.2 thorpej void prelist_del __P((struct nd_prefix *)); 298 1.2.2.2 thorpej void defrouter_addreq __P((struct nd_defrouter *)); 299 1.2.2.2 thorpej void defrouter_delreq __P((struct nd_defrouter *, int)); 300 1.2.2.2 thorpej void defrtrlist_del __P((struct nd_defrouter *)); 301 1.2.2.2 thorpej void prelist_remove __P((struct nd_prefix *)); 302 1.2.2.2 thorpej int prelist_update __P((struct nd_prefix *, struct nd_defrouter *, 303 1.2.2.2 thorpej struct mbuf *)); 304 1.2.2.2 thorpej struct nd_defrouter *defrouter_lookup __P((struct in6_addr *, 305 1.2.2.2 thorpej struct ifnet *)); 306 1.2.2.2 thorpej int in6_ifdel __P((struct ifnet *, struct in6_addr *)); 307 1.2.2.2 thorpej int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr)); 308 1.2.2.2 thorpej void rt6_flush __P((struct in6_addr *, struct ifnet *)); 309 1.2.2.2 thorpej 310 1.2.2.2 thorpej #endif /* _KERNEL */ 311 1.2.2.2 thorpej 312 1.2.2.2 thorpej #endif /* _NETINET6_ND6_H_ */ 313
Indexes created Sat Oct 18 23:09:54 GMT 2025