in6.h revision 1.26
1 /* $NetBSD: in6.h,v 1.26 2001/06/02 16:17:11 thorpej 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 #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) 116 117 /* 118 * IPv6 address 119 */ 120 struct in6_addr { 121 union { 122 u_int8_t __u6_addr8[16]; 123 u_int16_t __u6_addr16[8]; 124 u_int32_t __u6_addr32[4]; 125 } __u6_addr; /* 128-bit IP6 address */ 126 }; 127 128 #define s6_addr __u6_addr.__u6_addr8 129 #ifdef _KERNEL /*XXX nonstandard*/ 130 #define s6_addr8 __u6_addr.__u6_addr8 131 #define s6_addr16 __u6_addr.__u6_addr16 132 #define s6_addr32 __u6_addr.__u6_addr32 133 #endif 134 135 #define INET6_ADDRSTRLEN 46 136 137 /* 138 * Socket address for IPv6 139 */ 140 #ifndef _XOPEN_SOURCE 141 #define SIN6_LEN 142 #endif 143 struct sockaddr_in6 { 144 u_int8_t sin6_len; /* length of this struct(sa_family_t)*/ 145 sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */ 146 u_int16_t sin6_port; /* Transport layer port # (in_port_t)*/ 147 u_int32_t sin6_flowinfo; /* IP6 flow information */ 148 struct in6_addr sin6_addr; /* IP6 address */ 149 u_int32_t sin6_scope_id; /* intface scope id */ 150 }; 151 152 /* 153 * Local definition for masks 154 */ 155 #ifdef _KERNEL /*XXX nonstandard*/ 156 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}} 157 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \ 158 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 159 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 160 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 161 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 162 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}} 163 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 164 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 165 #endif 166 167 #ifdef _KERNEL 168 extern const struct sockaddr_in6 sa6_any; 169 170 extern const struct in6_addr in6mask0; 171 extern const struct in6_addr in6mask32; 172 extern const struct in6_addr in6mask64; 173 extern const struct in6_addr in6mask96; 174 extern const struct in6_addr in6mask128; 175 #endif /* _KERNEL */ 176 177 /* 178 * Macros started with IPV6_ADDR is KAME local 179 */ 180 #ifdef _KERNEL /*XXX nonstandard*/ 181 #if BYTE_ORDER == BIG_ENDIAN 182 #define IPV6_ADDR_INT32_ONE 1 183 #define IPV6_ADDR_INT32_TWO 2 184 #define IPV6_ADDR_INT32_MNL 0xff010000 185 #define IPV6_ADDR_INT32_MLL 0xff020000 186 #define IPV6_ADDR_INT32_SMP 0x0000ffff 187 #define IPV6_ADDR_INT16_ULL 0xfe80 188 #define IPV6_ADDR_INT16_USL 0xfec0 189 #define IPV6_ADDR_INT16_MLL 0xff02 190 #elif BYTE_ORDER == LITTLE_ENDIAN 191 #define IPV6_ADDR_INT32_ONE 0x01000000 192 #define IPV6_ADDR_INT32_TWO 0x02000000 193 #define IPV6_ADDR_INT32_MNL 0x000001ff 194 #define IPV6_ADDR_INT32_MLL 0x000002ff 195 #define IPV6_ADDR_INT32_SMP 0xffff0000 196 #define IPV6_ADDR_INT16_ULL 0x80fe 197 #define IPV6_ADDR_INT16_USL 0xc0fe 198 #define IPV6_ADDR_INT16_MLL 0x02ff 199 #endif 200 #endif 201 202 /* 203 * Definition of some useful macros to handle IP6 addresses 204 */ 205 #define IN6ADDR_ANY_INIT \ 206 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 207 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 208 #define IN6ADDR_LOOPBACK_INIT \ 209 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 210 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 211 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \ 212 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 213 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 214 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \ 215 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 216 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 217 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \ 218 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 219 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}} 220 221 extern const struct in6_addr in6addr_any; 222 extern const struct in6_addr in6addr_loopback; 223 extern const struct in6_addr in6addr_nodelocal_allnodes; 224 extern const struct in6_addr in6addr_linklocal_allnodes; 225 extern const struct in6_addr in6addr_linklocal_allrouters; 226 227 /* 228 * Equality 229 * NOTE: Some of kernel programming environment (for example, openbsd/sparc) 230 * does not supply memcmp(). For userland memcmp() is preferred as it is 231 * in ANSI standard. 232 */ 233 #ifdef _KERNEL 234 #define IN6_ARE_ADDR_EQUAL(a, b) \ 235 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 236 #else 237 #define IN6_ARE_ADDR_EQUAL(a, b) \ 238 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 239 #endif 240 241 /* 242 * Unspecified 243 */ 244 #define IN6_IS_ADDR_UNSPECIFIED(a) \ 245 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 246 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 247 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 248 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0)) 249 250 /* 251 * Loopback 252 */ 253 #define IN6_IS_ADDR_LOOPBACK(a) \ 254 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 255 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 256 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 257 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1))) 258 259 /* 260 * IPv4 compatible 261 */ 262 #define IN6_IS_ADDR_V4COMPAT(a) \ 263 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 264 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 265 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 266 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \ 267 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1))) 268 269 /* 270 * Mapped 271 */ 272 #define IN6_IS_ADDR_V4MAPPED(a) \ 273 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 274 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 275 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff))) 276 277 /* 278 * KAME Scope Values 279 */ 280 281 #ifdef _KERNEL /*XXX nonstandard*/ 282 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01 283 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 284 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 285 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 286 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e 287 #else 288 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01 289 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02 290 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05 291 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 292 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e 293 #endif 294 295 /* 296 * Unicast Scope 297 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). 298 */ 299 #define IN6_IS_ADDR_LINKLOCAL(a) \ 300 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 301 #define IN6_IS_ADDR_SITELOCAL(a) \ 302 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 303 304 /* 305 * Multicast 306 */ 307 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) 308 309 #ifdef _KERNEL /*XXX nonstandard*/ 310 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 311 #else 312 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 313 #endif 314 315 /* 316 * Multicast Scope 317 */ 318 #ifdef _KERNEL /*refers nonstandard items */ 319 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 320 (IN6_IS_ADDR_MULTICAST(a) && \ 321 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL)) 322 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 323 (IN6_IS_ADDR_MULTICAST(a) && \ 324 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL)) 325 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 326 (IN6_IS_ADDR_MULTICAST(a) && \ 327 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL)) 328 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 329 (IN6_IS_ADDR_MULTICAST(a) && \ 330 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL)) 331 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 332 (IN6_IS_ADDR_MULTICAST(a) && \ 333 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL)) 334 #else 335 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 336 (IN6_IS_ADDR_MULTICAST(a) && \ 337 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL)) 338 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 339 (IN6_IS_ADDR_MULTICAST(a) && \ 340 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL)) 341 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 342 (IN6_IS_ADDR_MULTICAST(a) && \ 343 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL)) 344 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 345 (IN6_IS_ADDR_MULTICAST(a) && \ 346 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL)) 347 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 348 (IN6_IS_ADDR_MULTICAST(a) && \ 349 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL)) 350 #endif 351 352 /* 353 * Wildcard Socket 354 */ 355 #if 0 /*pre-RFC2553*/ 356 #define IN6_IS_ADDR_ANY(a) IN6_IS_ADDR_UNSPECIFIED(a) 357 #endif 358 359 /* 360 * KAME Scope 361 */ 362 #ifdef _KERNEL /*nonstandard*/ 363 #define IN6_IS_SCOPE_LINKLOCAL(a) \ 364 ((IN6_IS_ADDR_LINKLOCAL(a)) || \ 365 (IN6_IS_ADDR_MC_LINKLOCAL(a))) 366 #endif 367 368 /* 369 * IP6 route structure 370 */ 371 #ifndef _XOPEN_SOURCE 372 struct route_in6 { 373 struct rtentry *ro_rt; 374 struct sockaddr_in6 ro_dst; 375 }; 376 #endif 377 378 /* 379 * Options for use with [gs]etsockopt at the IPV6 level. 380 * First word of comment is data type; bool is stored in int. 381 */ 382 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */ 383 /* no hdrincl */ 384 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */ 385 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */ 386 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */ 387 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */ 388 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */ 389 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */ 390 #define IPV6_MULTICAST_IF 9 /* u_char; set/get IP6 multicast i/f */ 391 #define IPV6_MULTICAST_HOPS 10 /* u_char; set/get IP6 multicast hops */ 392 #define IPV6_MULTICAST_LOOP 11 /* u_char; set/get IP6 multicast loopback */ 393 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */ 394 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */ 395 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */ 396 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */ 397 #define IPV6_PKTINFO 19 /* bool; send/rcv if, src/dst addr */ 398 #define IPV6_HOPLIMIT 20 /* bool; hop limit */ 399 #define IPV6_NEXTHOP 21 /* bool; next hop addr */ 400 #define IPV6_HOPOPTS 22 /* bool; hop-by-hop option */ 401 #define IPV6_DSTOPTS 23 /* bool; destination option */ 402 #define IPV6_RTHDR 24 /* bool; routing header */ 403 #define IPV6_PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */ 404 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */ 405 #define IPV6_BINDV6ONLY 27 /* bool; only bind INET6 at null bind */ 406 407 #if 1 /*IPSEC*/ 408 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */ 409 #endif 410 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */ 411 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 412 413 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */ 414 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */ 415 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ 416 417 /* 418 * Defaults and limits for options 419 */ 420 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */ 421 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 422 423 /* 424 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP. 425 */ 426 struct ipv6_mreq { 427 struct in6_addr ipv6mr_multiaddr; 428 unsigned int ipv6mr_interface; 429 }; 430 431 /* 432 * IPV6_PKTINFO: Packet information(RFC2292 sec 5) 433 */ 434 struct in6_pktinfo { 435 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 436 unsigned int ipi6_ifindex; /* send/recv interface index */ 437 }; 438 439 /* 440 * Argument for IPV6_PORTRANGE: 441 * - which range to search when port is unspecified at bind() or connect() 442 */ 443 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */ 444 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 445 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 446 447 #ifndef _XOPEN_SOURCE 448 /* 449 * Definitions for inet6 sysctl operations. 450 * 451 * Third level is protocol number. 452 * Fourth level is desired variable within that protocol. 453 */ 454 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */ 455 456 #define CTL_IPV6PROTO_NAMES { \ 457 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 458 { 0, 0 }, \ 459 { "tcp6", CTLTYPE_NODE }, \ 460 { 0, 0 }, \ 461 { 0, 0 }, \ 462 { 0, 0 }, \ 463 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 464 { 0, 0 }, \ 465 { 0, 0 }, \ 466 { "udp6", CTLTYPE_NODE }, \ 467 { 0, 0 }, \ 468 { 0, 0 }, \ 469 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 470 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 471 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 472 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 473 { 0, 0 }, \ 474 { "ip6", CTLTYPE_NODE }, \ 475 { 0, 0 }, \ 476 { 0, 0 }, \ 477 { 0, 0 }, \ 478 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 479 { 0, 0 }, \ 480 { "ipsec6", CTLTYPE_NODE }, \ 481 { 0, 0 }, \ 482 { 0, 0 }, \ 483 { 0, 0 }, \ 484 { 0, 0 }, \ 485 { 0, 0 }, \ 486 { 0, 0 }, \ 487 { "icmp6", CTLTYPE_NODE }, \ 488 { 0, 0 }, \ 489 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 490 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 491 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 492 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 493 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 494 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 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 }, \ 498 { 0, 0 }, \ 499 { 0, 0 }, \ 500 { "pim6", CTLTYPE_NODE }, \ 501 } 502 503 /* 504 * Names for IP sysctl objects 505 */ 506 #define IPV6CTL_FORWARDING 1 /* act as router */ 507 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/ 508 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */ 509 #ifdef notyet 510 #define IPV6CTL_DEFMTU 4 /* default MTU */ 511 #endif 512 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */ 513 #define IPV6CTL_STATS 6 /* stats */ 514 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */ 515 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */ 516 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */ 517 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */ 518 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */ 519 #define IPV6CTL_ACCEPT_RTADV 12 520 #define IPV6CTL_KEEPFAITH 13 521 #define IPV6CTL_LOG_INTERVAL 14 522 #define IPV6CTL_HDRNESTLIMIT 15 523 #define IPV6CTL_DAD_COUNT 16 524 #define IPV6CTL_AUTO_FLOWLABEL 17 525 #define IPV6CTL_DEFMCASTHLIM 18 526 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */ 527 #define IPV6CTL_KAME_VERSION 20 528 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */ 529 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */ 530 #define IPV6CTL_BINDV6ONLY 24 531 /* 25 to 27: reserved */ 532 #define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */ 533 #define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */ 534 #define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */ 535 #define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */ 536 /* New entries should be added here from current IPV6CTL_MAXID value. */ 537 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 538 #define IPV6CTL_MAXID 32 539 540 #define IPV6CTL_NAMES { \ 541 { 0, 0 }, \ 542 { "forwarding", CTLTYPE_INT }, \ 543 { "redirect", CTLTYPE_INT }, \ 544 { "hlim", CTLTYPE_INT }, \ 545 { "mtu", CTLTYPE_INT }, \ 546 { "forwsrcrt", CTLTYPE_INT }, \ 547 { 0, 0 }, \ 548 { 0, 0 }, \ 549 { "mrtproto", CTLTYPE_INT }, \ 550 { "maxfragpackets", CTLTYPE_INT }, \ 551 { "sourcecheck", CTLTYPE_INT }, \ 552 { "sourcecheck_logint", CTLTYPE_INT }, \ 553 { "accept_rtadv", CTLTYPE_INT }, \ 554 { "keepfaith", CTLTYPE_INT }, \ 555 { "log_interval", CTLTYPE_INT }, \ 556 { "hdrnestlimit", CTLTYPE_INT }, \ 557 { "dad_count", CTLTYPE_INT }, \ 558 { "auto_flowlabel", CTLTYPE_INT }, \ 559 { "defmcasthlim", CTLTYPE_INT }, \ 560 { "gifhlim", CTLTYPE_INT }, \ 561 { "kame_version", CTLTYPE_STRING }, \ 562 { "use_deprecated", CTLTYPE_INT }, \ 563 { "rr_prune", CTLTYPE_INT }, \ 564 { 0, 0 }, \ 565 { "bindv6only", CTLTYPE_INT }, \ 566 { 0, 0 }, \ 567 { 0, 0 }, \ 568 { 0, 0 }, \ 569 { "anonportmin", CTLTYPE_INT }, \ 570 { "anonportmax", CTLTYPE_INT }, \ 571 { "lowportmin", CTLTYPE_INT }, \ 572 { "lowportmax", CTLTYPE_INT }, \ 573 } 574 575 #endif /* !_XOPEN_SOURCE */ 576 577 #ifdef _KERNEL 578 struct cmsghdr; 579 580 /* 581 * in6_cksum_phdr: 582 * 583 * Compute significant parts of the IPv6 checksum pseudo-header 584 * for use in a delayed TCP/UDP checksum calculation. 585 * 586 * Args: 587 * 588 * src Source IPv6 address 589 * dst Destination IPv6 address 590 * len htonl(proto-hdr-len) 591 * nxt htonl(next-proto-number) 592 * 593 * NOTE: We expect the src and dst addresses to be 16-bit 594 * aligned! 595 */ 596 static __inline u_int16_t __attribute__((__unused__)) 597 in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst, 598 u_int32_t len, u_int32_t nxt) 599 { 600 u_int32_t sum = 0; 601 const u_int16_t *w; 602 603 w = (u_int16_t *) src; 604 sum += w[0]; 605 if (!IN6_IS_SCOPE_LINKLOCAL(src)) 606 sum += w[1]; 607 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 608 sum += w[6]; sum += w[7]; 609 610 w = (u_int16_t *) dst; 611 sum += w[0]; 612 if (!IN6_IS_SCOPE_LINKLOCAL(dst)) 613 sum += w[1]; 614 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 615 sum += w[6]; sum += w[7]; 616 617 sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/); 618 619 sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/); 620 621 sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/); 622 623 if (sum > 0xffff) 624 sum -= 0xffff; 625 626 return (sum); 627 } 628 629 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t)); 630 int in6_localaddr __P((struct in6_addr *)); 631 int in6_addrscope __P((struct in6_addr *)); 632 struct in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *)); 633 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *)); 634 extern void in6_if_up __P((struct ifnet *)); 635 extern u_char ip6_protox[]; 636 637 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 638 #define sin6tosa(sin6) ((struct sockaddr *)(sin6)) 639 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 640 #endif /* _KERNEL */ 641 642 __BEGIN_DECLS 643 struct cmsghdr; 644 645 extern int inet6_option_space __P((int)); 646 extern int inet6_option_init __P((void *, struct cmsghdr **, int)); 647 extern int inet6_option_append __P((struct cmsghdr *, const u_int8_t *, 648 int, int)); 649 extern u_int8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int)); 650 extern int inet6_option_next __P((const struct cmsghdr *, u_int8_t **)); 651 extern int inet6_option_find __P((const struct cmsghdr *, u_int8_t **, int)); 652 653 extern size_t inet6_rthdr_space __P((int, int)); 654 extern struct cmsghdr *inet6_rthdr_init __P((void *, int)); 655 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *, 656 unsigned int)); 657 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int)); 658 #if 0 /* not implemented yet */ 659 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *)); 660 #endif 661 extern int inet6_rthdr_segments __P((const struct cmsghdr *)); 662 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int)); 663 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int)); 664 __END_DECLS 665 666 #endif /* !_NETINET6_IN6_H_ */ 667
Indexes created Fri Sep 26 20:09:58 GMT 2025