1 /* $NetBSD: in6.h,v 1.41 2002/06/08 21:22:31 itojun Exp $ */ 2 /* $KAME: in6.h,v 1.83 2001/03/29 02:55:07 jinmei 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 "NetBSD-current" 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 */ 110 111 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 112 #define IPV6PORT_RESERVED 1024 113 #define IPV6PORT_ANONMIN 49152 114 #define IPV6PORT_ANONMAX 65535 115 #define IPV6PORT_RESERVEDMIN 600 116 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1) 117 #endif 118 119 /* 120 * IPv6 address 121 */ 122 struct in6_addr { 123 union { 124 __uint8_t __u6_addr8[16]; 125 __uint16_t __u6_addr16[8]; 126 uint32_t __u6_addr32[4]; 127 } __u6_addr; /* 128-bit IP6 address */ 128 }; 129 130 #define s6_addr __u6_addr.__u6_addr8 131 #ifdef _KERNEL /* XXX nonstandard */ 132 #define s6_addr8 __u6_addr.__u6_addr8 133 #define s6_addr16 __u6_addr.__u6_addr16 134 #define s6_addr32 __u6_addr.__u6_addr32 135 #endif 136 137 #define INET6_ADDRSTRLEN 46 138 139 /* 140 * Socket address for IPv6 141 */ 142 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 143 #define SIN6_LEN 144 #endif 145 struct sockaddr_in6 { 146 uint8_t sin6_len; /* length of this struct(socklen_t)*/ 147 sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */ 148 in_port_t sin6_port; /* Transport layer port */ 149 uint32_t sin6_flowinfo; /* IP6 flow information */ 150 struct in6_addr sin6_addr; /* IP6 address */ 151 uint32_t sin6_scope_id; /* scope zone index */ 152 }; 153 154 /* 155 * Local definition for masks 156 */ 157 #ifdef _KERNEL /* XXX nonstandard */ 158 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}} 159 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \ 160 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 161 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 162 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 163 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 164 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}} 165 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 166 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 167 #endif 168 169 #ifdef _KERNEL 170 extern const struct sockaddr_in6 sa6_any; 171 172 extern const struct in6_addr in6mask0; 173 extern const struct in6_addr in6mask32; 174 extern const struct in6_addr in6mask64; 175 extern const struct in6_addr in6mask96; 176 extern const struct in6_addr in6mask128; 177 #endif /* _KERNEL */ 178 179 /* 180 * Macros started with IPV6_ADDR is KAME local 181 */ 182 #ifdef _KERNEL /* XXX nonstandard */ 183 #if BYTE_ORDER == BIG_ENDIAN 184 #define IPV6_ADDR_INT32_ONE 1 185 #define IPV6_ADDR_INT32_TWO 2 186 #define IPV6_ADDR_INT32_MNL 0xff010000 187 #define IPV6_ADDR_INT32_MLL 0xff020000 188 #define IPV6_ADDR_INT32_SMP 0x0000ffff 189 #define IPV6_ADDR_INT16_ULL 0xfe80 190 #define IPV6_ADDR_INT16_USL 0xfec0 191 #define IPV6_ADDR_INT16_MLL 0xff02 192 #elif BYTE_ORDER == LITTLE_ENDIAN 193 #define IPV6_ADDR_INT32_ONE 0x01000000 194 #define IPV6_ADDR_INT32_TWO 0x02000000 195 #define IPV6_ADDR_INT32_MNL 0x000001ff 196 #define IPV6_ADDR_INT32_MLL 0x000002ff 197 #define IPV6_ADDR_INT32_SMP 0xffff0000 198 #define IPV6_ADDR_INT16_ULL 0x80fe 199 #define IPV6_ADDR_INT16_USL 0xc0fe 200 #define IPV6_ADDR_INT16_MLL 0x02ff 201 #endif 202 #endif 203 204 /* 205 * Definition of some useful macros to handle IP6 addresses 206 */ 207 #define IN6ADDR_ANY_INIT \ 208 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 209 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 210 #define IN6ADDR_LOOPBACK_INIT \ 211 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 212 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 213 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \ 214 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 215 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 216 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \ 217 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 218 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 219 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \ 220 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 221 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}} 222 223 extern const struct in6_addr in6addr_any; 224 extern const struct in6_addr in6addr_loopback; 225 extern const struct in6_addr in6addr_nodelocal_allnodes; 226 extern const struct in6_addr in6addr_linklocal_allnodes; 227 extern const struct in6_addr in6addr_linklocal_allrouters; 228 229 /* 230 * Equality 231 * NOTE: Some of kernel programming environment (for example, openbsd/sparc) 232 * does not supply memcmp(). For userland memcmp() is preferred as it is 233 * in ANSI standard. 234 */ 235 #ifdef _KERNEL 236 #define IN6_ARE_ADDR_EQUAL(a, b) \ 237 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 238 #else 239 #define IN6_ARE_ADDR_EQUAL(a, b) \ 240 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 241 #endif 242 243 /* 244 * Unspecified 245 */ 246 #define IN6_IS_ADDR_UNSPECIFIED(a) \ 247 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 248 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 249 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 250 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0)) 251 252 /* 253 * Loopback 254 */ 255 #define IN6_IS_ADDR_LOOPBACK(a) \ 256 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 257 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 258 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 259 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1))) 260 261 /* 262 * IPv4 compatible 263 */ 264 #define IN6_IS_ADDR_V4COMPAT(a) \ 265 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 266 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 267 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 268 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \ 269 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1))) 270 271 /* 272 * Mapped 273 */ 274 #define IN6_IS_ADDR_V4MAPPED(a) \ 275 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 276 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 277 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff))) 278 279 /* 280 * KAME Scope Values 281 */ 282 283 #ifdef _KERNEL /* XXX nonstandard */ 284 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01 285 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 286 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 287 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 288 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e 289 #else 290 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01 291 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02 292 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05 293 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 294 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e 295 #endif 296 297 /* 298 * Unicast Scope 299 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). 300 */ 301 #define IN6_IS_ADDR_LINKLOCAL(a) \ 302 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 303 #define IN6_IS_ADDR_SITELOCAL(a) \ 304 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 305 306 /* 307 * Multicast 308 */ 309 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) 310 311 #ifdef _KERNEL /* XXX nonstandard */ 312 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 313 #else 314 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 315 #endif 316 317 /* 318 * Multicast Scope 319 */ 320 #ifdef _KERNEL /* refers nonstandard items */ 321 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 322 (IN6_IS_ADDR_MULTICAST(a) && \ 323 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL)) 324 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 325 (IN6_IS_ADDR_MULTICAST(a) && \ 326 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL)) 327 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 328 (IN6_IS_ADDR_MULTICAST(a) && \ 329 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL)) 330 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 331 (IN6_IS_ADDR_MULTICAST(a) && \ 332 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL)) 333 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 334 (IN6_IS_ADDR_MULTICAST(a) && \ 335 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL)) 336 #else 337 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 338 (IN6_IS_ADDR_MULTICAST(a) && \ 339 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL)) 340 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 341 (IN6_IS_ADDR_MULTICAST(a) && \ 342 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL)) 343 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 344 (IN6_IS_ADDR_MULTICAST(a) && \ 345 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL)) 346 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 347 (IN6_IS_ADDR_MULTICAST(a) && \ 348 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL)) 349 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 350 (IN6_IS_ADDR_MULTICAST(a) && \ 351 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL)) 352 #endif 353 354 #ifdef _KERNEL /* nonstandard */ 355 /* 356 * KAME Scope 357 */ 358 #define IN6_IS_SCOPE_LINKLOCAL(a) \ 359 ((IN6_IS_ADDR_LINKLOCAL(a)) || \ 360 (IN6_IS_ADDR_MC_LINKLOCAL(a))) 361 362 #define IFA6_IS_DEPRECATED(a) \ 363 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \ 364 (u_int32_t)((time.tv_sec - (a)->ia6_updatetime)) > \ 365 (a)->ia6_lifetime.ia6t_pltime) 366 #define IFA6_IS_INVALID(a) \ 367 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \ 368 (u_int32_t)((time.tv_sec - (a)->ia6_updatetime)) > \ 369 (a)->ia6_lifetime.ia6t_vltime) 370 #endif 371 372 /* 373 * IP6 route structure 374 */ 375 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 376 struct route_in6 { 377 struct rtentry *ro_rt; 378 struct sockaddr_in6 ro_dst; 379 }; 380 #endif 381 382 /* 383 * Options for use with [gs]etsockopt at the IPV6 level. 384 * First word of comment is data type; bool is stored in int. 385 */ 386 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */ 387 /* no hdrincl */ 388 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */ 389 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */ 390 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */ 391 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */ 392 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */ 393 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */ 394 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */ 395 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */ 396 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */ 397 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */ 398 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */ 399 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */ 400 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 401 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */ 402 #endif 403 #define IPV6_PKTINFO 19 /* bool; send/rcv if, src/dst addr */ 404 #define IPV6_HOPLIMIT 20 /* bool; hop limit */ 405 #define IPV6_NEXTHOP 21 /* bool; next hop addr */ 406 #define IPV6_HOPOPTS 22 /* bool; hop-by-hop option */ 407 #define IPV6_DSTOPTS 23 /* bool; destination option */ 408 #define IPV6_RTHDR 24 /* bool; routing header */ 409 #define IPV6_PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */ 410 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */ 411 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */ 412 413 #if 1 /* IPSEC */ 414 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */ 415 #endif 416 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */ 417 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 418 419 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */ 420 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */ 421 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ 422 423 /* 424 * Defaults and limits for options 425 */ 426 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */ 427 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 428 429 /* 430 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP. 431 */ 432 struct ipv6_mreq { 433 struct in6_addr ipv6mr_multiaddr; 434 unsigned int ipv6mr_interface; 435 }; 436 437 /* 438 * IPV6_PKTINFO: Packet information(RFC2292 sec 5) 439 */ 440 struct in6_pktinfo { 441 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 442 unsigned int ipi6_ifindex; /* send/recv interface index */ 443 }; 444 445 /* 446 * Argument for IPV6_PORTRANGE: 447 * - which range to search when port is unspecified at bind() or connect() 448 */ 449 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */ 450 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 451 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 452 453 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 454 /* 455 * Definitions for inet6 sysctl operations. 456 * 457 * Third level is protocol number. 458 * Fourth level is desired variable within that protocol. 459 */ 460 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */ 461 462 #define CTL_IPV6PROTO_NAMES { \ 463 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 464 { 0, 0 }, \ 465 { "tcp6", CTLTYPE_NODE }, \ 466 { 0, 0 }, \ 467 { 0, 0 }, \ 468 { 0, 0 }, \ 469 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 470 { 0, 0 }, \ 471 { 0, 0 }, \ 472 { "udp6", CTLTYPE_NODE }, \ 473 { 0, 0 }, \ 474 { 0, 0 }, \ 475 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 476 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 477 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 478 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 479 { 0, 0 }, \ 480 { "ip6", CTLTYPE_NODE }, \ 481 { 0, 0 }, \ 482 { 0, 0 }, \ 483 { 0, 0 }, \ 484 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 485 { 0, 0 }, \ 486 { "ipsec6", CTLTYPE_NODE }, \ 487 { 0, 0 }, \ 488 { 0, 0 }, \ 489 { 0, 0 }, \ 490 { 0, 0 }, \ 491 { 0, 0 }, \ 492 { 0, 0 }, \ 493 { "icmp6", CTLTYPE_NODE }, \ 494 { 0, 0 }, \ 495 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 496 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 497 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 498 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 499 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 500 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 501 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 502 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 503 { 0, 0 }, \ 504 { 0, 0 }, \ 505 { 0, 0 }, \ 506 { "pim6", CTLTYPE_NODE }, \ 507 } 508 509 /* 510 * Names for IP sysctl objects 511 */ 512 #define IPV6CTL_FORWARDING 1 /* act as router */ 513 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/ 514 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */ 515 #ifdef notyet 516 #define IPV6CTL_DEFMTU 4 /* default MTU */ 517 #endif 518 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */ 519 #define IPV6CTL_STATS 6 /* stats */ 520 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */ 521 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */ 522 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */ 523 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */ 524 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */ 525 #define IPV6CTL_ACCEPT_RTADV 12 526 #define IPV6CTL_KEEPFAITH 13 527 #define IPV6CTL_LOG_INTERVAL 14 528 #define IPV6CTL_HDRNESTLIMIT 15 529 #define IPV6CTL_DAD_COUNT 16 530 #define IPV6CTL_AUTO_FLOWLABEL 17 531 #define IPV6CTL_DEFMCASTHLIM 18 532 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */ 533 #define IPV6CTL_KAME_VERSION 20 534 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */ 535 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */ 536 /* 23: reserved */ 537 #define IPV6CTL_V6ONLY 24 538 /* 25 to 27: reserved */ 539 #define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */ 540 #define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */ 541 #define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */ 542 #define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */ 543 /* 32 to 40: resrved */ 544 #define IPV6CTL_MAXFRAGS 41 /* max fragments */ 545 /* New entries should be added here from current IPV6CTL_MAXID value. */ 546 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 547 #define IPV6CTL_MAXID 42 548 549 #define IPV6CTL_NAMES { \ 550 { 0, 0 }, \ 551 { "forwarding", CTLTYPE_INT }, \ 552 { "redirect", CTLTYPE_INT }, \ 553 { "hlim", CTLTYPE_INT }, \ 554 { "mtu", CTLTYPE_INT }, \ 555 { "forwsrcrt", CTLTYPE_INT }, \ 556 { 0, 0 }, \ 557 { 0, 0 }, \ 558 { "mrtproto", CTLTYPE_INT }, \ 559 { "maxfragpackets", CTLTYPE_INT }, \ 560 { "sourcecheck", CTLTYPE_INT }, \ 561 { "sourcecheck_logint", CTLTYPE_INT }, \ 562 { "accept_rtadv", CTLTYPE_INT }, \ 563 { "keepfaith", CTLTYPE_INT }, \ 564 { "log_interval", CTLTYPE_INT }, \ 565 { "hdrnestlimit", CTLTYPE_INT }, \ 566 { "dad_count", CTLTYPE_INT }, \ 567 { "auto_flowlabel", CTLTYPE_INT }, \ 568 { "defmcasthlim", CTLTYPE_INT }, \ 569 { "gifhlim", CTLTYPE_INT }, \ 570 { "kame_version", CTLTYPE_STRING }, \ 571 { "use_deprecated", CTLTYPE_INT }, \ 572 { "rr_prune", CTLTYPE_INT }, \ 573 { 0, 0 }, \ 574 { "v6only", CTLTYPE_INT }, \ 575 { 0, 0 }, \ 576 { 0, 0 }, \ 577 { 0, 0 }, \ 578 { "anonportmin", CTLTYPE_INT }, \ 579 { "anonportmax", CTLTYPE_INT }, \ 580 { "lowportmin", CTLTYPE_INT }, \ 581 { "lowportmax", CTLTYPE_INT }, \ 582 { 0, 0 }, \ 583 { 0, 0 }, \ 584 { 0, 0 }, \ 585 { 0, 0 }, \ 586 { 0, 0 }, \ 587 { 0, 0 }, \ 588 { 0, 0 }, \ 589 { 0, 0 }, \ 590 { 0, 0 }, \ 591 { "maxfrags", CTLTYPE_INT }, \ 592 } 593 594 #endif /* !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 595 596 #ifdef _KERNEL 597 struct cmsghdr; 598 599 /* 600 * in6_cksum_phdr: 601 * 602 * Compute significant parts of the IPv6 checksum pseudo-header 603 * for use in a delayed TCP/UDP checksum calculation. 604 * 605 * Args: 606 * 607 * src Source IPv6 address 608 * dst Destination IPv6 address 609 * len htonl(proto-hdr-len) 610 * nxt htonl(next-proto-number) 611 * 612 * NOTE: We expect the src and dst addresses to be 16-bit 613 * aligned! 614 */ 615 static __inline u_int16_t __attribute__((__unused__)) 616 in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst, 617 u_int32_t len, u_int32_t nxt) 618 { 619 u_int32_t sum = 0; 620 const u_int16_t *w; 621 622 /*LINTED*/ 623 w = (const u_int16_t *) src; 624 sum += w[0]; 625 if (!IN6_IS_SCOPE_LINKLOCAL(src)) 626 sum += w[1]; 627 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 628 sum += w[6]; sum += w[7]; 629 630 /*LINTED*/ 631 w = (const u_int16_t *) dst; 632 sum += w[0]; 633 if (!IN6_IS_SCOPE_LINKLOCAL(dst)) 634 sum += w[1]; 635 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 636 sum += w[6]; sum += w[7]; 637 638 sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/); 639 640 sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/); 641 642 sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/); 643 644 if (sum > 0xffff) 645 sum -= 0xffff; 646 647 return (sum); 648 } 649 650 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t)); 651 int in6_localaddr __P((struct in6_addr *)); 652 int in6_addrscope __P((struct in6_addr *)); 653 struct in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *)); 654 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *)); 655 extern void in6_if_up __P((struct ifnet *)); 656 extern u_char ip6_protox[]; 657 658 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 659 #define sin6tosa(sin6) ((struct sockaddr *)(sin6)) 660 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 661 #endif /* _KERNEL */ 662 663 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 664 665 #include <machine/ansi.h> 666 667 #ifdef _BSD_SIZE_T_ 668 typedef _BSD_SIZE_T_ size_t; 669 #define _SIZE_T 670 #undef _BSD_SIZE_T_ 671 #endif 672 673 #include <sys/cdefs.h> 674 675 __BEGIN_DECLS 676 struct cmsghdr; 677 678 extern int inet6_option_space __P((int)); 679 extern int inet6_option_init __P((void *, struct cmsghdr **, int)); 680 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *, 681 int, int)); 682 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int)); 683 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **)); 684 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int)); 685 686 extern size_t inet6_rthdr_space __P((int, int)); 687 extern struct cmsghdr *inet6_rthdr_init __P((void *, int)); 688 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *, 689 unsigned int)); 690 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int)); 691 #if 0 /* not implemented yet */ 692 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *)); 693 #endif 694 extern int inet6_rthdr_segments __P((const struct cmsghdr *)); 695 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int)); 696 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int)); 697 __END_DECLS 698 #endif /* !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 699 700 #endif /* !_NETINET6_IN6_H_ */ 701