in6.h revision 1.49
1 /* $NetBSD: in6.h,v 1.49 2005/12/20 19:32:58 christos 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. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)in.h 8.3 (Berkeley) 1/3/94 62 */ 63 64 #ifndef _NETINET6_IN6_H_ 65 #define _NETINET6_IN6_H_ 66 67 #ifndef __KAME_NETINET_IN_H_INCLUDED_ 68 #error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553" 69 #endif 70 71 /* 72 * Identification of the network protocol stack 73 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE 74 * has the table of implementation/integration differences. 75 */ 76 #define __KAME__ 77 #define __KAME_VERSION "NetBSD-current" 78 79 /* 80 * Local port number conventions: 81 * 82 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root), 83 * unless a kernel is compiled with IPNOPRIVPORTS defined. 84 * 85 * When a user does a bind(2) or connect(2) with a port number of zero, 86 * a non-conflicting local port address is chosen. 87 * 88 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although 89 * that is settable by sysctl(3); net.inet.ip.anonportmin and 90 * net.inet.ip.anonportmax respectively. 91 * 92 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 93 * default assignment range. 94 * 95 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 96 * 97 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT, 98 * and exists only for FreeBSD compatibility purposes. 99 * 100 * The value IP_PORTRANGE_LOW changes the range to the "low" are 101 * that is (by convention) restricted to privileged processes. 102 * This convention is based on "vouchsafe" principles only. 103 * It is only secure if you trust the remote host to restrict these ports. 104 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX. 105 */ 106 107 #if defined(_NETBSD_SOURCE) 108 #define IPV6PORT_RESERVED 1024 109 #define IPV6PORT_ANONMIN 49152 110 #define IPV6PORT_ANONMAX 65535 111 #define IPV6PORT_RESERVEDMIN 600 112 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1) 113 #endif 114 115 /* 116 * IPv6 address 117 */ 118 struct in6_addr { 119 union { 120 __uint8_t __u6_addr8[16]; 121 __uint16_t __u6_addr16[8]; 122 uint32_t __u6_addr32[4]; 123 } __u6_addr; /* 128-bit IP6 address */ 124 }; 125 126 #define s6_addr __u6_addr.__u6_addr8 127 #ifdef _KERNEL /* XXX nonstandard */ 128 #define s6_addr8 __u6_addr.__u6_addr8 129 #define s6_addr16 __u6_addr.__u6_addr16 130 #define s6_addr32 __u6_addr.__u6_addr32 131 #endif 132 133 #define INET6_ADDRSTRLEN 46 134 135 /* 136 * Socket address for IPv6 137 */ 138 #if defined(_NETBSD_SOURCE) 139 #define SIN6_LEN 140 #endif 141 struct sockaddr_in6 { 142 uint8_t sin6_len; /* length of this struct(socklen_t)*/ 143 sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */ 144 in_port_t sin6_port; /* Transport layer port */ 145 uint32_t sin6_flowinfo; /* IP6 flow information */ 146 struct in6_addr sin6_addr; /* IP6 address */ 147 uint32_t sin6_scope_id; /* scope zone index */ 148 }; 149 150 /* 151 * Local definition for masks 152 */ 153 #ifdef _KERNEL /* XXX nonstandard */ 154 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}} 155 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \ 156 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 157 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 158 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 159 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 160 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}} 161 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 162 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 163 #endif 164 165 #ifdef _KERNEL 166 extern const struct sockaddr_in6 sa6_any; 167 168 extern const struct in6_addr in6mask0; 169 extern const struct in6_addr in6mask32; 170 extern const struct in6_addr in6mask64; 171 extern const struct in6_addr in6mask96; 172 extern const struct in6_addr in6mask128; 173 #endif /* _KERNEL */ 174 175 /* 176 * Macros started with IPV6_ADDR is KAME local 177 */ 178 #ifdef _KERNEL /* XXX nonstandard */ 179 #if BYTE_ORDER == BIG_ENDIAN 180 #define IPV6_ADDR_INT32_ONE 1 181 #define IPV6_ADDR_INT32_TWO 2 182 #define IPV6_ADDR_INT32_MNL 0xff010000 183 #define IPV6_ADDR_INT32_MLL 0xff020000 184 #define IPV6_ADDR_INT32_SMP 0x0000ffff 185 #define IPV6_ADDR_INT16_ULL 0xfe80 186 #define IPV6_ADDR_INT16_USL 0xfec0 187 #define IPV6_ADDR_INT16_MLL 0xff02 188 #elif BYTE_ORDER == LITTLE_ENDIAN 189 #define IPV6_ADDR_INT32_ONE 0x01000000 190 #define IPV6_ADDR_INT32_TWO 0x02000000 191 #define IPV6_ADDR_INT32_MNL 0x000001ff 192 #define IPV6_ADDR_INT32_MLL 0x000002ff 193 #define IPV6_ADDR_INT32_SMP 0xffff0000 194 #define IPV6_ADDR_INT16_ULL 0x80fe 195 #define IPV6_ADDR_INT16_USL 0xc0fe 196 #define IPV6_ADDR_INT16_MLL 0x02ff 197 #endif 198 #endif 199 200 /* 201 * Definition of some useful macros to handle IP6 addresses 202 */ 203 #define IN6ADDR_ANY_INIT \ 204 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 206 #define IN6ADDR_LOOPBACK_INIT \ 207 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 208 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 209 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \ 210 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 211 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 212 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \ 213 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 214 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 215 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \ 216 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 217 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}} 218 219 extern const struct in6_addr in6addr_any; 220 extern const struct in6_addr in6addr_loopback; 221 extern const struct in6_addr in6addr_nodelocal_allnodes; 222 extern const struct in6_addr in6addr_linklocal_allnodes; 223 extern const struct in6_addr in6addr_linklocal_allrouters; 224 225 /* 226 * Equality 227 * NOTE: Some of kernel programming environment (for example, openbsd/sparc) 228 * does not supply memcmp(). For userland memcmp() is preferred as it is 229 * in ANSI standard. 230 */ 231 #ifdef _KERNEL 232 #define IN6_ARE_ADDR_EQUAL(a, b) \ 233 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 234 #else 235 #define IN6_ARE_ADDR_EQUAL(a, b) \ 236 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 237 #endif 238 239 /* 240 * Unspecified 241 */ 242 #define IN6_IS_ADDR_UNSPECIFIED(a) \ 243 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 244 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 245 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 246 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0)) 247 248 /* 249 * Loopback 250 */ 251 #define IN6_IS_ADDR_LOOPBACK(a) \ 252 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 253 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 254 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 255 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1))) 256 257 /* 258 * IPv4 compatible 259 */ 260 #define IN6_IS_ADDR_V4COMPAT(a) \ 261 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 262 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 263 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 264 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \ 265 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1))) 266 267 /* 268 * Mapped 269 */ 270 #define IN6_IS_ADDR_V4MAPPED(a) \ 271 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 272 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 273 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff))) 274 275 /* 276 * KAME Scope Values 277 */ 278 279 #ifdef _KERNEL /* XXX nonstandard */ 280 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01 281 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 282 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 283 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 284 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e 285 #else 286 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01 287 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02 288 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05 289 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 290 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e 291 #endif 292 293 /* 294 * Unicast Scope 295 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). 296 */ 297 #define IN6_IS_ADDR_LINKLOCAL(a) \ 298 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 299 #define IN6_IS_ADDR_SITELOCAL(a) \ 300 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 301 302 /* 303 * Multicast 304 */ 305 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) 306 307 #ifdef _KERNEL /* XXX nonstandard */ 308 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 309 #else 310 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 311 #endif 312 313 /* 314 * Multicast Scope 315 */ 316 #ifdef _KERNEL /* refers nonstandard items */ 317 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 318 (IN6_IS_ADDR_MULTICAST(a) && \ 319 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL)) 320 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 321 (IN6_IS_ADDR_MULTICAST(a) && \ 322 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL)) 323 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 324 (IN6_IS_ADDR_MULTICAST(a) && \ 325 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL)) 326 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 327 (IN6_IS_ADDR_MULTICAST(a) && \ 328 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL)) 329 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 330 (IN6_IS_ADDR_MULTICAST(a) && \ 331 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL)) 332 #else 333 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 334 (IN6_IS_ADDR_MULTICAST(a) && \ 335 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL)) 336 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 337 (IN6_IS_ADDR_MULTICAST(a) && \ 338 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL)) 339 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 340 (IN6_IS_ADDR_MULTICAST(a) && \ 341 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL)) 342 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 343 (IN6_IS_ADDR_MULTICAST(a) && \ 344 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL)) 345 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 346 (IN6_IS_ADDR_MULTICAST(a) && \ 347 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL)) 348 #endif 349 350 #ifdef _KERNEL /* nonstandard */ 351 /* 352 * KAME Scope 353 */ 354 #define IN6_IS_SCOPE_LINKLOCAL(a) \ 355 ((IN6_IS_ADDR_LINKLOCAL(a)) || \ 356 (IN6_IS_ADDR_MC_LINKLOCAL(a))) 357 358 #define IFA6_IS_DEPRECATED(a) \ 359 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \ 360 (u_int32_t)((time.tv_sec - (a)->ia6_updatetime)) > \ 361 (a)->ia6_lifetime.ia6t_pltime) 362 #define IFA6_IS_INVALID(a) \ 363 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \ 364 (u_int32_t)((time.tv_sec - (a)->ia6_updatetime)) > \ 365 (a)->ia6_lifetime.ia6t_vltime) 366 #endif 367 368 /* 369 * IP6 route structure 370 */ 371 #if defined(_NETBSD_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_int; set/get IP6 multicast i/f */ 391 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */ 392 #define IPV6_MULTICAST_LOOP 11 /* u_int; 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 #if defined(_NETBSD_SOURCE) 397 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */ 398 #endif 399 #define IPV6_PKTINFO 19 /* bool; send/rcv if, src/dst addr */ 400 #define IPV6_HOPLIMIT 20 /* bool; hop limit */ 401 #define IPV6_NEXTHOP 21 /* bool; next hop addr */ 402 #define IPV6_HOPOPTS 22 /* bool; hop-by-hop option */ 403 #define IPV6_DSTOPTS 23 /* bool; destination option */ 404 #define IPV6_RTHDR 24 /* bool; routing header */ 405 #define IPV6_PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */ 406 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */ 407 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */ 408 409 #if 1 /* IPSEC */ 410 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */ 411 #endif 412 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */ 413 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */ 414 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 415 416 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */ 417 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */ 418 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ 419 420 /* 421 * Defaults and limits for options 422 */ 423 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */ 424 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 425 426 /* 427 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP. 428 */ 429 struct ipv6_mreq { 430 struct in6_addr ipv6mr_multiaddr; 431 unsigned int ipv6mr_interface; 432 }; 433 434 /* 435 * IPV6_PKTINFO: Packet information(RFC2292 sec 5) 436 */ 437 struct in6_pktinfo { 438 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 439 unsigned int ipi6_ifindex; /* send/recv interface index */ 440 }; 441 442 /* 443 * Argument for IPV6_PORTRANGE: 444 * - which range to search when port is unspecified at bind() or connect() 445 */ 446 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */ 447 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 448 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 449 450 #if defined(_NETBSD_SOURCE) 451 /* 452 * Definitions for inet6 sysctl operations. 453 * 454 * Third level is protocol number. 455 * Fourth level is desired variable within that protocol. 456 */ 457 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */ 458 459 #define CTL_IPV6PROTO_NAMES { \ 460 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 461 { 0, 0 }, \ 462 { "tcp6", CTLTYPE_NODE }, \ 463 { 0, 0 }, \ 464 { 0, 0 }, \ 465 { 0, 0 }, \ 466 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 467 { 0, 0 }, \ 468 { 0, 0 }, \ 469 { "udp6", CTLTYPE_NODE }, \ 470 { 0, 0 }, \ 471 { 0, 0 }, \ 472 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 473 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 474 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 475 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 476 { 0, 0 }, \ 477 { "ip6", CTLTYPE_NODE }, \ 478 { 0, 0 }, \ 479 { 0, 0 }, \ 480 { 0, 0 }, \ 481 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 482 { 0, 0 }, \ 483 { "ipsec6", CTLTYPE_NODE }, \ 484 { 0, 0 }, \ 485 { 0, 0 }, \ 486 { 0, 0 }, \ 487 { 0, 0 }, \ 488 { 0, 0 }, \ 489 { 0, 0 }, \ 490 { "icmp6", CTLTYPE_NODE }, \ 491 { 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 }, { 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 }, \ 501 { 0, 0 }, \ 502 { 0, 0 }, \ 503 { "pim6", CTLTYPE_NODE }, \ 504 } 505 506 /* 507 * Names for IP sysctl objects 508 */ 509 #define IPV6CTL_FORWARDING 1 /* act as router */ 510 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/ 511 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */ 512 #ifdef notyet 513 #define IPV6CTL_DEFMTU 4 /* default MTU */ 514 #endif 515 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */ 516 #define IPV6CTL_STATS 6 /* stats */ 517 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */ 518 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */ 519 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */ 520 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */ 521 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */ 522 #define IPV6CTL_ACCEPT_RTADV 12 523 #define IPV6CTL_KEEPFAITH 13 524 #define IPV6CTL_LOG_INTERVAL 14 525 #define IPV6CTL_HDRNESTLIMIT 15 526 #define IPV6CTL_DAD_COUNT 16 527 #define IPV6CTL_AUTO_FLOWLABEL 17 528 #define IPV6CTL_DEFMCASTHLIM 18 529 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */ 530 #define IPV6CTL_KAME_VERSION 20 531 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */ 532 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */ 533 /* 23: reserved */ 534 #define IPV6CTL_V6ONLY 24 535 /* 25 to 27: reserved */ 536 #define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */ 537 #define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */ 538 #define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */ 539 #define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */ 540 /* 32 to 40: resrved */ 541 #define IPV6CTL_MAXFRAGS 41 /* max fragments */ 542 #define IPV6CTL_IFQ 42 /* ip6intrq node */ 543 /* New entries should be added here from current IPV6CTL_MAXID value. */ 544 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 545 #define IPV6CTL_MAXID 43 546 547 #define IPV6CTL_NAMES { \ 548 { 0, 0 }, \ 549 { "forwarding", CTLTYPE_INT }, \ 550 { "redirect", CTLTYPE_INT }, \ 551 { "hlim", CTLTYPE_INT }, \ 552 { "mtu", CTLTYPE_INT }, \ 553 { "forwsrcrt", CTLTYPE_INT }, \ 554 { "stats", CTLTYPE_STRUCT }, \ 555 { 0, 0 }, \ 556 { "mrtproto", CTLTYPE_INT }, \ 557 { "maxfragpackets", CTLTYPE_INT }, \ 558 { "sourcecheck", CTLTYPE_INT }, \ 559 { "sourcecheck_logint", CTLTYPE_INT }, \ 560 { "accept_rtadv", CTLTYPE_INT }, \ 561 { "keepfaith", CTLTYPE_INT }, \ 562 { "log_interval", CTLTYPE_INT }, \ 563 { "hdrnestlimit", CTLTYPE_INT }, \ 564 { "dad_count", CTLTYPE_INT }, \ 565 { "auto_flowlabel", CTLTYPE_INT }, \ 566 { "defmcasthlim", CTLTYPE_INT }, \ 567 { "gifhlim", CTLTYPE_INT }, \ 568 { "kame_version", CTLTYPE_STRING }, \ 569 { "use_deprecated", CTLTYPE_INT }, \ 570 { "rr_prune", CTLTYPE_INT }, \ 571 { 0, 0 }, \ 572 { "v6only", CTLTYPE_INT }, \ 573 { 0, 0 }, \ 574 { 0, 0 }, \ 575 { 0, 0 }, \ 576 { "anonportmin", CTLTYPE_INT }, \ 577 { "anonportmax", CTLTYPE_INT }, \ 578 { "lowportmin", CTLTYPE_INT }, \ 579 { "lowportmax", CTLTYPE_INT }, \ 580 { 0, 0 }, \ 581 { 0, 0 }, \ 582 { 0, 0 }, \ 583 { 0, 0 }, \ 584 { 0, 0 }, \ 585 { 0, 0 }, \ 586 { 0, 0 }, \ 587 { 0, 0 }, \ 588 { 0, 0 }, \ 589 { "maxfrags", CTLTYPE_INT }, \ 590 { "ifq", CTLTYPE_NODE }, \ 591 } 592 593 #endif /* _NETBSD_SOURCE */ 594 595 #ifdef _KERNEL 596 struct cmsghdr; 597 598 /* 599 * in6_cksum_phdr: 600 * 601 * Compute significant parts of the IPv6 checksum pseudo-header 602 * for use in a delayed TCP/UDP checksum calculation. 603 * 604 * Args: 605 * 606 * src Source IPv6 address 607 * dst Destination IPv6 address 608 * len htonl(proto-hdr-len) 609 * nxt htonl(next-proto-number) 610 * 611 * NOTE: We expect the src and dst addresses to be 16-bit 612 * aligned! 613 */ 614 static __inline u_int16_t __attribute__((__unused__)) 615 in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst, 616 u_int32_t len, u_int32_t nxt) 617 { 618 u_int32_t sum = 0; 619 const u_int16_t *w; 620 621 /*LINTED*/ 622 w = (const u_int16_t *) src; 623 sum += w[0]; 624 if (!IN6_IS_SCOPE_LINKLOCAL(src)) 625 sum += w[1]; 626 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 627 sum += w[6]; sum += w[7]; 628 629 /*LINTED*/ 630 w = (const u_int16_t *) dst; 631 sum += w[0]; 632 if (!IN6_IS_SCOPE_LINKLOCAL(dst)) 633 sum += w[1]; 634 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 635 sum += w[6]; sum += w[7]; 636 637 sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/); 638 639 sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/); 640 641 sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/); 642 643 if (sum > 0xffff) 644 sum -= 0xffff; 645 646 return (sum); 647 } 648 649 struct mbuf; 650 struct ifnet; 651 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t)); 652 void in6_delayed_cksum __P((struct mbuf *)); 653 int in6_localaddr __P((struct in6_addr *)); 654 int in6_addrscope __P((struct in6_addr *)); 655 struct in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *)); 656 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *)); 657 extern void in6_if_up __P((struct ifnet *)); 658 extern u_char ip6_protox[]; 659 660 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 661 #define sin6tosa(sin6) ((struct sockaddr *)(sin6)) 662 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 663 #endif /* _KERNEL */ 664 665 #if defined(_NETBSD_SOURCE) 666 667 #include <machine/ansi.h> 668 669 #ifdef _BSD_SIZE_T_ 670 typedef _BSD_SIZE_T_ size_t; 671 #define _SIZE_T 672 #undef _BSD_SIZE_T_ 673 #endif 674 675 #include <sys/cdefs.h> 676 677 __BEGIN_DECLS 678 struct cmsghdr; 679 680 extern int inet6_option_space __P((int)); 681 extern int inet6_option_init __P((void *, struct cmsghdr **, int)); 682 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *, 683 int, int)); 684 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int)); 685 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **)); 686 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int)); 687 688 extern size_t inet6_rthdr_space __P((int, int)); 689 extern struct cmsghdr *inet6_rthdr_init __P((void *, int)); 690 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *, 691 unsigned int)); 692 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int)); 693 #if 0 /* not implemented yet */ 694 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *)); 695 #endif 696 extern int inet6_rthdr_segments __P((const struct cmsghdr *)); 697 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int)); 698 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int)); 699 __END_DECLS 700 #endif /* _NETBSD_SOURCE */ 701 702 #endif /* !_NETINET6_IN6_H_ */ 703
Indexes created Fri Sep 26 08:10:20 GMT 2025