in6.h revision 121315
1/* $FreeBSD: head/sys/netinet6/in6.h 121315 2003-10-21 20:05:32Z ume $ */ 2/* $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $ */ 3 4/* 5 * Copyright (C) 1995, 1996, 1997, and 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/* 34 * Copyright (c) 1982, 1986, 1990, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)in.h 8.3 (Berkeley) 1/3/94 66 */ 67 68#ifndef __KAME_NETINET_IN_H_INCLUDED_ 69#error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553" 70#endif 71 72#ifndef _NETINET6_IN6_H_ 73#define _NETINET6_IN6_H_ 74 75/* 76 * Identification of the network protocol stack 77 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE 78 * has the table of implementation/integration differences. 79 */ 80#define __KAME__ 81#define __KAME_VERSION "20010528/FreeBSD" 82 83/* 84 * Local port number conventions: 85 * 86 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root), 87 * unless a kernel is compiled with IPNOPRIVPORTS defined. 88 * 89 * When a user does a bind(2) or connect(2) with a port number of zero, 90 * a non-conflicting local port address is chosen. 91 * 92 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although 93 * that is settable by sysctl(3); net.inet.ip.anonportmin and 94 * net.inet.ip.anonportmax respectively. 95 * 96 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 97 * default assignment range. 98 * 99 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 100 * 101 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT, 102 * and exists only for FreeBSD compatibility purposes. 103 * 104 * The value IP_PORTRANGE_LOW changes the range to the "low" are 105 * that is (by convention) restricted to privileged processes. 106 * This convention is based on "vouchsafe" principles only. 107 * It is only secure if you trust the remote host to restrict these ports. 108 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX. 109 */ 110#if __BSD_VISIBLE 111#define IPV6PORT_RESERVED 1024 112#define IPV6PORT_ANONMIN 49152 113#define IPV6PORT_ANONMAX 65535 114#define IPV6PORT_RESERVEDMIN 600 115#define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1) 116#endif 117 118/* 119 * IPv6 address 120 */ 121struct in6_addr { 122 union { 123 uint8_t __u6_addr8[16]; 124 uint16_t __u6_addr16[8]; 125 uint32_t __u6_addr32[4]; 126 } __u6_addr; /* 128-bit IP6 address */ 127}; 128 129#define s6_addr __u6_addr.__u6_addr8 130#ifdef _KERNEL /* XXX nonstandard */ 131#define s6_addr8 __u6_addr.__u6_addr8 132#define s6_addr16 __u6_addr.__u6_addr16 133#define s6_addr32 __u6_addr.__u6_addr32 134#endif 135 136#define INET6_ADDRSTRLEN 46 137 138/* 139 * XXX missing POSIX.1-2001 macro IPPROTO_IPV6. 140 */ 141 142/* 143 * Socket address for IPv6 144 */ 145#if __BSD_VISIBLE 146#define SIN6_LEN 147#endif 148 149struct sockaddr_in6 { 150 uint8_t sin6_len; /* length of this struct */ 151 sa_family_t sin6_family; /* AF_INET6 */ 152 in_port_t sin6_port; /* Transport layer port # */ 153 uint32_t sin6_flowinfo; /* IP6 flow information */ 154 struct in6_addr sin6_addr; /* IP6 address */ 155 uint32_t sin6_scope_id; /* scope zone index */ 156}; 157 158/* 159 * Local definition for masks 160 */ 161#ifdef _KERNEL /* XXX nonstandard */ 162#define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}} 163#define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \ 164 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 165#define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 166 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 167#define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 168 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}} 169#define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 170 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 171#endif 172 173#ifdef _KERNEL 174extern const struct sockaddr_in6 sa6_any; 175 176extern const struct in6_addr in6mask0; 177extern const struct in6_addr in6mask32; 178extern const struct in6_addr in6mask64; 179extern const struct in6_addr in6mask96; 180extern const struct in6_addr in6mask128; 181#endif /* _KERNEL */ 182 183/* 184 * Macros started with IPV6_ADDR is KAME local 185 */ 186#ifdef _KERNEL /* XXX nonstandard */ 187#if _BYTE_ORDER == _BIG_ENDIAN 188#define IPV6_ADDR_INT32_ONE 1 189#define IPV6_ADDR_INT32_TWO 2 190#define IPV6_ADDR_INT32_MNL 0xff010000 191#define IPV6_ADDR_INT32_MLL 0xff020000 192#define IPV6_ADDR_INT32_SMP 0x0000ffff 193#define IPV6_ADDR_INT16_ULL 0xfe80 194#define IPV6_ADDR_INT16_USL 0xfec0 195#define IPV6_ADDR_INT16_MLL 0xff02 196#elif _BYTE_ORDER == _LITTLE_ENDIAN 197#define IPV6_ADDR_INT32_ONE 0x01000000 198#define IPV6_ADDR_INT32_TWO 0x02000000 199#define IPV6_ADDR_INT32_MNL 0x000001ff 200#define IPV6_ADDR_INT32_MLL 0x000002ff 201#define IPV6_ADDR_INT32_SMP 0xffff0000 202#define IPV6_ADDR_INT16_ULL 0x80fe 203#define IPV6_ADDR_INT16_USL 0xc0fe 204#define IPV6_ADDR_INT16_MLL 0x02ff 205#endif 206#endif 207 208/* 209 * Definition of some useful macros to handle IP6 addresses 210 */ 211#if __BSD_VISIBLE 212#define IN6ADDR_ANY_INIT \ 213 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 214 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 215#define IN6ADDR_LOOPBACK_INIT \ 216 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 217 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 218#define IN6ADDR_NODELOCAL_ALLNODES_INIT \ 219 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 220 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 221#define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \ 222 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 223 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 224#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \ 225 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 226 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 227#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \ 228 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 229 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}} 230#endif 231 232extern const struct in6_addr in6addr_any; 233extern const struct in6_addr in6addr_loopback; 234#if __BSD_VISIBLE 235extern const struct in6_addr in6addr_nodelocal_allnodes; 236extern const struct in6_addr in6addr_linklocal_allnodes; 237extern const struct in6_addr in6addr_linklocal_allrouters; 238#endif 239 240/* 241 * Equality 242 * NOTE: Some of kernel programming environment (for example, openbsd/sparc) 243 * does not supply memcmp(). For userland memcmp() is preferred as it is 244 * in ANSI standard. 245 */ 246#ifdef _KERNEL 247#define IN6_ARE_ADDR_EQUAL(a, b) \ 248 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 249#else 250#if __BSD_VISIBLE 251#define IN6_ARE_ADDR_EQUAL(a, b) \ 252 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 253#endif 254#endif 255 256#ifdef _KERNEL /* non standard */ 257/* see if two addresses are equal in a scope-conscious manner. */ 258#define SA6_ARE_ADDR_EQUAL(a, b) \ 259 (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \ 260 ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \ 261 (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0)) 262#endif 263 264/* 265 * Unspecified 266 */ 267#define IN6_IS_ADDR_UNSPECIFIED(a) \ 268 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 269 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 270 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 271 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0)) 272 273/* 274 * Loopback 275 */ 276#define IN6_IS_ADDR_LOOPBACK(a) \ 277 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 278 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 279 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 280 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1))) 281 282/* 283 * IPv4 compatible 284 */ 285#define IN6_IS_ADDR_V4COMPAT(a) \ 286 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 287 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 288 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 289 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \ 290 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1))) 291 292/* 293 * Mapped 294 */ 295#define IN6_IS_ADDR_V4MAPPED(a) \ 296 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 297 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 298 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff))) 299 300/* 301 * KAME Scope Values 302 */ 303 304#ifdef _KERNEL /* XXX nonstandard */ 305#define IPV6_ADDR_SCOPE_NODELOCAL 0x01 306#define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01 307#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 308#define IPV6_ADDR_SCOPE_SITELOCAL 0x05 309#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 310#define IPV6_ADDR_SCOPE_GLOBAL 0x0e 311#else 312#define __IPV6_ADDR_SCOPE_NODELOCAL 0x01 313#define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01 314#define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02 315#define __IPV6_ADDR_SCOPE_SITELOCAL 0x05 316#define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 317#define __IPV6_ADDR_SCOPE_GLOBAL 0x0e 318#endif 319 320/* 321 * Unicast Scope 322 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). 323 */ 324#define IN6_IS_ADDR_LINKLOCAL(a) \ 325 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 326#define IN6_IS_ADDR_SITELOCAL(a) \ 327 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 328 329/* 330 * Multicast 331 */ 332#define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) 333 334#ifdef _KERNEL /* XXX nonstandard */ 335#define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 336#else 337#define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 338#endif 339 340/* 341 * Multicast Scope 342 */ 343#ifdef _KERNEL /* refers nonstandard items */ 344#define IN6_IS_ADDR_MC_NODELOCAL(a) \ 345 (IN6_IS_ADDR_MULTICAST(a) && \ 346 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL)) 347#define IN6_IS_ADDR_MC_INTFACELOCAL(a) \ 348 (IN6_IS_ADDR_MULTICAST(a) && \ 349 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL)) 350#define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 351 (IN6_IS_ADDR_MULTICAST(a) && \ 352 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL)) 353#define IN6_IS_ADDR_MC_SITELOCAL(a) \ 354 (IN6_IS_ADDR_MULTICAST(a) && \ 355 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL)) 356#define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 357 (IN6_IS_ADDR_MULTICAST(a) && \ 358 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL)) 359#define IN6_IS_ADDR_MC_GLOBAL(a) \ 360 (IN6_IS_ADDR_MULTICAST(a) && \ 361 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL)) 362#else 363#define IN6_IS_ADDR_MC_NODELOCAL(a) \ 364 (IN6_IS_ADDR_MULTICAST(a) && \ 365 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL)) 366#define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 367 (IN6_IS_ADDR_MULTICAST(a) && \ 368 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL)) 369#define IN6_IS_ADDR_MC_SITELOCAL(a) \ 370 (IN6_IS_ADDR_MULTICAST(a) && \ 371 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL)) 372#define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 373 (IN6_IS_ADDR_MULTICAST(a) && \ 374 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL)) 375#define IN6_IS_ADDR_MC_GLOBAL(a) \ 376 (IN6_IS_ADDR_MULTICAST(a) && \ 377 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL)) 378#endif 379 380#ifdef _KERNEL /* nonstandard */ 381/* 382 * KAME Scope 383 */ 384#define IN6_IS_SCOPE_LINKLOCAL(a) \ 385 ((IN6_IS_ADDR_LINKLOCAL(a)) || \ 386 (IN6_IS_ADDR_MC_LINKLOCAL(a))) 387 388#define IFA6_IS_DEPRECATED(a) \ 389 ((a)->ia6_lifetime.ia6t_preferred != 0 && \ 390 (a)->ia6_lifetime.ia6t_preferred < time_second) 391#define IFA6_IS_INVALID(a) \ 392 ((a)->ia6_lifetime.ia6t_expire != 0 && \ 393 (a)->ia6_lifetime.ia6t_expire < time_second) 394#endif /* _KERNEL */ 395 396/* 397 * IP6 route structure 398 */ 399#if __BSD_VISIBLE 400struct route_in6 { 401 struct rtentry *ro_rt; 402 struct sockaddr_in6 ro_dst; 403}; 404#endif 405 406/* 407 * Options for use with [gs]etsockopt at the IPV6 level. 408 * First word of comment is data type; bool is stored in int. 409 */ 410#define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */ 411#define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */ 412#define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */ 413#define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */ 414#define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */ 415#define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */ 416#define IPV6_V6ONLY 27 /* bool; only bind INET6 at wildcard bind */ 417 418#if __BSD_VISIBLE 419/* no hdrincl */ 420#if 0 /* the followings are relic in IPv4 and hence are disabled */ 421#define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */ 422#define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */ 423#define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */ 424#define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */ 425#define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */ 426#endif 427#define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */ 428#define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */ 429#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */ 430/* RFC2292 options */ 431#define IPV6_PKTINFO 19 /* bool; send/recv if, src/dst addr */ 432#define IPV6_HOPLIMIT 20 /* bool; hop limit */ 433#define IPV6_NEXTHOP 21 /* bool; next hop addr */ 434#define IPV6_HOPOPTS 22 /* bool; hop-by-hop option */ 435#define IPV6_DSTOPTS 23 /* bool; destination option */ 436#define IPV6_RTHDR 24 /* bool; routing header */ 437#define IPV6_PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */ 438 439#define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */ 440#ifndef _KERNEL 441#define IPV6_BINDV6ONLY IPV6_V6ONLY 442#endif 443 444#if 1 /* IPSEC */ 445#define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */ 446#endif 447#define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */ 448 449#if 1 /* IPV6FIREWALL */ 450#define IPV6_FW_ADD 30 /* add a firewall rule to chain */ 451#define IPV6_FW_DEL 31 /* delete a firewall rule from chain */ 452#define IPV6_FW_FLUSH 32 /* flush firewall rule chain */ 453#define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */ 454#define IPV6_FW_GET 34 /* get entire firewall rule chain */ 455#endif 456 457/* to define items, should talk with KAME guys first, for *BSD compatibility */ 458 459#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */ 460#define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */ 461#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ 462 463/* 464 * Defaults and limits for options 465 */ 466#define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */ 467#define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 468 469/* 470 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP. 471 */ 472struct ipv6_mreq { 473 struct in6_addr ipv6mr_multiaddr; 474 unsigned int ipv6mr_interface; 475}; 476 477/* 478 * IPV6_PKTINFO: Packet information(RFC2292 sec 5) 479 */ 480struct in6_pktinfo { 481 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 482 unsigned int ipi6_ifindex; /* send/recv interface index */ 483}; 484 485/* 486 * Argument for IPV6_PORTRANGE: 487 * - which range to search when port is unspecified at bind() or connect() 488 */ 489#define IPV6_PORTRANGE_DEFAULT 0 /* default range */ 490#define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 491#define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 492 493/* 494 * Definitions for inet6 sysctl operations. 495 * 496 * Third level is protocol number. 497 * Fourth level is desired variable within that protocol. 498 */ 499#define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */ 500 501/* 502 * Names for IP sysctl objects 503 */ 504#define IPV6CTL_FORWARDING 1 /* act as router */ 505#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/ 506#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */ 507#ifdef notyet 508#define IPV6CTL_DEFMTU 4 /* default MTU */ 509#endif 510#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */ 511#define IPV6CTL_STATS 6 /* stats */ 512#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */ 513#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */ 514#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */ 515#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */ 516#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */ 517#define IPV6CTL_ACCEPT_RTADV 12 518#define IPV6CTL_KEEPFAITH 13 519#define IPV6CTL_LOG_INTERVAL 14 520#define IPV6CTL_HDRNESTLIMIT 15 521#define IPV6CTL_DAD_COUNT 16 522#define IPV6CTL_AUTO_FLOWLABEL 17 523#define IPV6CTL_DEFMCASTHLIM 18 524#define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */ 525#define IPV6CTL_KAME_VERSION 20 526#define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */ 527#define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */ 528#if 0 /* obsolete */ 529#define IPV6CTL_MAPPED_ADDR 23 530#endif 531#define IPV6CTL_V6ONLY 24 532#define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */ 533#define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */ 534#define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */ 535 536#define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */ 537#define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */ 538#define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */ 539#define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */ 540#define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */ 541 542/* New entries should be added here from current IPV6CTL_MAXID value. */ 543/* to define items, should talk with KAME guys first, for *BSD compatibility */ 544#define IPV6CTL_MAXID 37 545 546/* 547 * Redefinition of mbuf flags 548 */ 549#define M_AUTHIPHDR M_PROTO2 550#define M_DECRYPTED M_PROTO3 551#define M_LOOP M_PROTO4 552#define M_AUTHIPDGM M_PROTO5 553 554#ifdef _KERNEL 555struct cmsghdr; 556 557int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t)); 558int in6_localaddr __P((struct in6_addr *)); 559int in6_addrscope __P((struct in6_addr *)); 560struct in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *)); 561struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *)); 562extern void in6_if_up __P((struct ifnet *)); 563struct sockaddr; 564extern u_char ip6_protox[]; 565 566void in6_sin6_2_sin __P((struct sockaddr_in *sin, 567 struct sockaddr_in6 *sin6)); 568void in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin, 569 struct sockaddr_in6 *sin6)); 570void in6_sin6_2_sin_in_sock __P((struct sockaddr *nam)); 571void in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam)); 572 573#define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 574#define sin6tosa(sin6) ((struct sockaddr *)(sin6)) 575#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 576 577extern int (*faithprefix_p)(struct in6_addr *); 578#endif /* _KERNEL */ 579 580#ifndef _SIZE_T_DECLARED 581typedef __size_t size_t; 582#define _SIZE_T_DECLARED 583#endif 584 585__BEGIN_DECLS 586struct cmsghdr; 587 588extern int inet6_option_space __P((int)); 589extern int inet6_option_init __P((void *, struct cmsghdr **, int)); 590extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *, 591 int, int)); 592extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int)); 593extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **)); 594extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int)); 595 596extern size_t inet6_rthdr_space __P((int, int)); 597extern struct cmsghdr *inet6_rthdr_init __P((void *, int)); 598extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *, 599 unsigned int)); 600extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int)); 601#if 0 /* not implemented yet */ 602extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *)); 603#endif 604extern int inet6_rthdr_segments __P((const struct cmsghdr *)); 605extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int)); 606extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int)); 607 608extern int inet6_opt_init __P((void *, size_t)); 609extern int inet6_opt_append __P((void *, size_t, int, uint8_t, 610 size_t, uint8_t, void **)); 611extern int inet6_opt_finish __P((void *, size_t, int)); 612extern int inet6_opt_set_val __P((void *, size_t, void *, int)); 613 614extern int inet6_opt_next __P((void *, size_t, int, uint8_t *, 615 size_t *, void **)); 616extern int inet6_opt_find __P((void *, size_t, int, uint8_t, 617 size_t *, void **)); 618extern int inet6_opt_get_val __P((void *, size_t, void *, int)); 619extern size_t inet6_rth_space __P((int, int)); 620extern void *inet6_rth_init __P((void *, int, int, int)); 621extern int inet6_rth_add __P((void *, const struct in6_addr *)); 622extern int inet6_rth_reverse __P((const void *, void *)); 623extern int inet6_rth_segments __P((const void *)); 624extern struct in6_addr *inet6_rth_getaddr __P((const void *, int)); 625__END_DECLS 626 627#endif /* __BSD_VISIBLE */ 628 629#endif /* !_NETINET6_IN6_H_ */ 630