in6.h revision 1.52
1 /* $NetBSD: in6.h,v 1.52 2006/02/16 20:17:20 perry 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_INTFACELOCAL 0x01 282 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 283 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 284 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 285 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e 286 #else 287 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01 288 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02 289 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05 290 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 291 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e 292 #endif 293 294 /* 295 * Unicast Scope 296 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). 297 */ 298 #define IN6_IS_ADDR_LINKLOCAL(a) \ 299 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 300 #define IN6_IS_ADDR_SITELOCAL(a) \ 301 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 302 303 /* 304 * Multicast 305 */ 306 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) 307 308 #ifdef _KERNEL /* XXX nonstandard */ 309 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 310 #else 311 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 312 #endif 313 314 /* 315 * Multicast Scope 316 */ 317 #ifdef _KERNEL /* refers nonstandard items */ 318 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 319 (IN6_IS_ADDR_MULTICAST(a) && \ 320 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL)) 321 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \ 322 (IN6_IS_ADDR_MULTICAST(a) && \ 323 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL)) 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(_NETBSD_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(_NETBSD_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 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */ 418 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 419 420 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */ 421 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */ 422 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ 423 424 /* 425 * Defaults and limits for options 426 */ 427 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */ 428 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 429 430 /* 431 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP. 432 */ 433 struct ipv6_mreq { 434 struct in6_addr ipv6mr_multiaddr; 435 unsigned int ipv6mr_interface; 436 }; 437 438 /* 439 * IPV6_PKTINFO: Packet information(RFC2292 sec 5) 440 */ 441 struct in6_pktinfo { 442 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 443 unsigned int ipi6_ifindex; /* send/recv interface index */ 444 }; 445 446 /* 447 * Argument for IPV6_PORTRANGE: 448 * - which range to search when port is unspecified at bind() or connect() 449 */ 450 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */ 451 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 452 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 453 454 #if defined(_NETBSD_SOURCE) 455 /* 456 * Definitions for inet6 sysctl operations. 457 * 458 * Third level is protocol number. 459 * Fourth level is desired variable within that protocol. 460 */ 461 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */ 462 463 #define CTL_IPV6PROTO_NAMES { \ 464 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 465 { 0, 0 }, \ 466 { "tcp6", CTLTYPE_NODE }, \ 467 { 0, 0 }, \ 468 { 0, 0 }, \ 469 { 0, 0 }, \ 470 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 471 { 0, 0 }, \ 472 { 0, 0 }, \ 473 { "udp6", CTLTYPE_NODE }, \ 474 { 0, 0 }, \ 475 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 480 { 0, 0 }, \ 481 { "ip6", CTLTYPE_NODE }, \ 482 { 0, 0 }, \ 483 { 0, 0 }, \ 484 { 0, 0 }, \ 485 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 486 { 0, 0 }, \ 487 { "ipsec6", CTLTYPE_NODE }, \ 488 { 0, 0 }, \ 489 { 0, 0 }, \ 490 { 0, 0 }, \ 491 { 0, 0 }, \ 492 { 0, 0 }, \ 493 { 0, 0 }, \ 494 { "icmp6", CTLTYPE_NODE }, \ 495 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 504 { 0, 0 }, \ 505 { 0, 0 }, \ 506 { 0, 0 }, \ 507 { "pim6", CTLTYPE_NODE }, \ 508 } 509 510 /* 511 * Names for IP sysctl objects 512 */ 513 #define IPV6CTL_FORWARDING 1 /* act as router */ 514 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/ 515 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */ 516 #ifdef notyet 517 #define IPV6CTL_DEFMTU 4 /* default MTU */ 518 #endif 519 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */ 520 #define IPV6CTL_STATS 6 /* stats */ 521 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */ 522 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */ 523 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */ 524 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */ 525 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */ 526 #define IPV6CTL_ACCEPT_RTADV 12 527 #define IPV6CTL_KEEPFAITH 13 528 #define IPV6CTL_LOG_INTERVAL 14 529 #define IPV6CTL_HDRNESTLIMIT 15 530 #define IPV6CTL_DAD_COUNT 16 531 #define IPV6CTL_AUTO_FLOWLABEL 17 532 #define IPV6CTL_DEFMCASTHLIM 18 533 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */ 534 #define IPV6CTL_KAME_VERSION 20 535 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */ 536 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */ 537 /* 23: reserved */ 538 #define IPV6CTL_V6ONLY 24 539 /* 25 to 27: reserved */ 540 #define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */ 541 #define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */ 542 #define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */ 543 #define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */ 544 /* 32 to 38: reserved */ 545 #define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */ 546 /* 40: reserved */ 547 #define IPV6CTL_MAXFRAGS 41 /* max fragments */ 548 #define IPV6CTL_IFQ 42 /* ip6intrq node */ 549 /* New entries should be added here from current IPV6CTL_MAXID value. */ 550 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 551 #define IPV6CTL_MAXID 43 552 553 #define IPV6CTL_NAMES { \ 554 { 0, 0 }, \ 555 { "forwarding", CTLTYPE_INT }, \ 556 { "redirect", CTLTYPE_INT }, \ 557 { "hlim", CTLTYPE_INT }, \ 558 { "mtu", CTLTYPE_INT }, \ 559 { "forwsrcrt", CTLTYPE_INT }, \ 560 { "stats", CTLTYPE_STRUCT }, \ 561 { 0, 0 }, \ 562 { "mrtproto", CTLTYPE_INT }, \ 563 { "maxfragpackets", CTLTYPE_INT }, \ 564 { "sourcecheck", CTLTYPE_INT }, \ 565 { "sourcecheck_logint", CTLTYPE_INT }, \ 566 { "accept_rtadv", CTLTYPE_INT }, \ 567 { "keepfaith", CTLTYPE_INT }, \ 568 { "log_interval", CTLTYPE_INT }, \ 569 { "hdrnestlimit", CTLTYPE_INT }, \ 570 { "dad_count", CTLTYPE_INT }, \ 571 { "auto_flowlabel", CTLTYPE_INT }, \ 572 { "defmcasthlim", CTLTYPE_INT }, \ 573 { "gifhlim", CTLTYPE_INT }, \ 574 { "kame_version", CTLTYPE_STRING }, \ 575 { "use_deprecated", CTLTYPE_INT }, \ 576 { "rr_prune", CTLTYPE_INT }, \ 577 { 0, 0 }, \ 578 { "v6only", CTLTYPE_INT }, \ 579 { 0, 0 }, \ 580 { 0, 0 }, \ 581 { 0, 0 }, \ 582 { "anonportmin", CTLTYPE_INT }, \ 583 { "anonportmax", CTLTYPE_INT }, \ 584 { "lowportmin", CTLTYPE_INT }, \ 585 { "lowportmax", CTLTYPE_INT }, \ 586 { 0, 0 }, \ 587 { 0, 0 }, \ 588 { 0, 0 }, \ 589 { 0, 0 }, \ 590 { 0, 0 }, \ 591 { 0, 0 }, \ 592 { 0, 0 }, \ 593 { 0, 0 }, \ 594 { 0, 0 }, \ 595 { "maxfrags", CTLTYPE_INT }, \ 596 { "ifq", CTLTYPE_NODE }, \ 597 } 598 599 #endif /* _NETBSD_SOURCE */ 600 601 #ifdef _KERNEL 602 struct cmsghdr; 603 604 /* 605 * in6_cksum_phdr: 606 * 607 * Compute significant parts of the IPv6 checksum pseudo-header 608 * for use in a delayed TCP/UDP checksum calculation. 609 * 610 * Args: 611 * 612 * src Source IPv6 address 613 * dst Destination IPv6 address 614 * len htonl(proto-hdr-len) 615 * nxt htonl(next-proto-number) 616 * 617 * NOTE: We expect the src and dst addresses to be 16-bit 618 * aligned! 619 */ 620 static __inline u_int16_t __attribute__((__unused__)) 621 in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst, 622 u_int32_t len, u_int32_t nxt) 623 { 624 u_int32_t sum = 0; 625 const u_int16_t *w; 626 627 /*LINTED*/ 628 w = (const u_int16_t *) src; 629 sum += w[0]; 630 if (!IN6_IS_SCOPE_LINKLOCAL(src)) 631 sum += w[1]; 632 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 633 sum += w[6]; sum += w[7]; 634 635 /*LINTED*/ 636 w = (const u_int16_t *) dst; 637 sum += w[0]; 638 if (!IN6_IS_SCOPE_LINKLOCAL(dst)) 639 sum += w[1]; 640 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 641 sum += w[6]; sum += w[7]; 642 643 sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/); 644 645 sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/); 646 647 sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/); 648 649 if (sum > 0xffff) 650 sum -= 0xffff; 651 652 return (sum); 653 } 654 655 struct mbuf; 656 struct ifnet; 657 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t)); 658 void in6_delayed_cksum __P((struct mbuf *)); 659 int in6_localaddr __P((struct in6_addr *)); 660 int in6_addrscope __P((struct in6_addr *)); 661 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *)); 662 extern void in6_if_up __P((struct ifnet *)); 663 #ifndef __FreeBSD__ 664 extern int in6_src_sysctl __P((void *, size_t *, void *, size_t)); 665 #endif 666 extern void addrsel_policy_init __P((void)); 667 extern u_char ip6_protox[]; 668 669 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 670 #define sin6tosa(sin6) ((struct sockaddr *)(sin6)) 671 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 672 #endif /* _KERNEL */ 673 674 #if defined(_NETBSD_SOURCE) 675 676 #include <machine/ansi.h> 677 678 #ifdef _BSD_SIZE_T_ 679 typedef _BSD_SIZE_T_ size_t; 680 #define _SIZE_T 681 #undef _BSD_SIZE_T_ 682 #endif 683 684 #include <sys/cdefs.h> 685 686 __BEGIN_DECLS 687 struct cmsghdr; 688 689 extern int inet6_option_space __P((int)); 690 extern int inet6_option_init __P((void *, struct cmsghdr **, int)); 691 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *, 692 int, int)); 693 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int)); 694 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **)); 695 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int)); 696 697 extern size_t inet6_rthdr_space __P((int, int)); 698 extern struct cmsghdr *inet6_rthdr_init __P((void *, int)); 699 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *, 700 unsigned int)); 701 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int)); 702 #if 0 /* not implemented yet */ 703 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *)); 704 #endif 705 extern int inet6_rthdr_segments __P((const struct cmsghdr *)); 706 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int)); 707 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int)); 708 __END_DECLS 709 #endif /* _NETBSD_SOURCE */ 710 711 #endif /* !_NETINET6_IN6_H_ */ 712
Indexes created Fri Sep 26 08:10:20 GMT 2025