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sys/netinet6/in6.h
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1 /* $NetBSD: in6.h,v 1.57 2006/10/31 00:29:30 cbiere 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 #include <sys/socket.h> 72 73 /* 74 * Identification of the network protocol stack 75 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE 76 * has the table of implementation/integration differences. 77 */ 78 #define __KAME__ 79 #define __KAME_VERSION "NetBSD-current" 80 81 /* 82 * Local port number conventions: 83 * 84 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root), 85 * unless a kernel is compiled with IPNOPRIVPORTS defined. 86 * 87 * When a user does a bind(2) or connect(2) with a port number of zero, 88 * a non-conflicting local port address is chosen. 89 * 90 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although 91 * that is settable by sysctl(3); net.inet.ip.anonportmin and 92 * net.inet.ip.anonportmax respectively. 93 * 94 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 95 * default assignment range. 96 * 97 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 98 * 99 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT, 100 * and exists only for FreeBSD compatibility purposes. 101 * 102 * The value IP_PORTRANGE_LOW changes the range to the "low" are 103 * that is (by convention) restricted to privileged processes. 104 * This convention is based on "vouchsafe" principles only. 105 * It is only secure if you trust the remote host to restrict these ports. 106 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX. 107 */ 108 109 #if defined(_NETBSD_SOURCE) 110 #define IPV6PORT_RESERVED 1024 111 #define IPV6PORT_ANONMIN 49152 112 #define IPV6PORT_ANONMAX 65535 113 #define IPV6PORT_RESERVEDMIN 600 114 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1) 115 #endif 116 117 /* 118 * IPv6 address 119 */ 120 struct in6_addr { 121 union { 122 __uint8_t __u6_addr8[16]; 123 __uint16_t __u6_addr16[8]; 124 uint32_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 #if defined(_NETBSD_SOURCE) 141 #define SIN6_LEN 142 #endif 143 struct sockaddr_in6 { 144 uint8_t sin6_len; /* length of this struct(socklen_t)*/ 145 sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */ 146 in_port_t sin6_port; /* Transport layer port */ 147 uint32_t sin6_flowinfo; /* IP6 flow information */ 148 struct in6_addr sin6_addr; /* IP6 address */ 149 uint32_t sin6_scope_id; /* scope zone index */ 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 uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 246 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 247 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 248 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0)) 249 250 /* 251 * Loopback 252 */ 253 #define IN6_IS_ADDR_LOOPBACK(a) \ 254 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 255 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 256 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 257 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1))) 258 259 /* 260 * IPv4 compatible 261 */ 262 #define IN6_IS_ADDR_V4COMPAT(a) \ 263 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 264 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 265 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 266 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \ 267 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1))) 268 269 /* 270 * Mapped 271 */ 272 #define IN6_IS_ADDR_V4MAPPED(a) \ 273 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 274 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 275 (*(const uint32_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_INTFACELOCAL 0x01 284 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 285 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 286 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 287 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e 288 #else 289 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01 290 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02 291 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05 292 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 293 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e 294 #endif 295 296 /* 297 * Unicast Scope 298 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). 299 */ 300 #define IN6_IS_ADDR_LINKLOCAL(a) \ 301 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 302 #define IN6_IS_ADDR_SITELOCAL(a) \ 303 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 304 305 /* 306 * Multicast 307 */ 308 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) 309 310 #ifdef _KERNEL /* XXX nonstandard */ 311 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 312 #else 313 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 314 #endif 315 316 /* 317 * Multicast Scope 318 */ 319 #ifdef _KERNEL /* refers nonstandard items */ 320 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 321 (IN6_IS_ADDR_MULTICAST(a) && \ 322 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL)) 323 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \ 324 (IN6_IS_ADDR_MULTICAST(a) && \ 325 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL)) 326 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 327 (IN6_IS_ADDR_MULTICAST(a) && \ 328 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL)) 329 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 330 (IN6_IS_ADDR_MULTICAST(a) && \ 331 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL)) 332 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 333 (IN6_IS_ADDR_MULTICAST(a) && \ 334 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL)) 335 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 336 (IN6_IS_ADDR_MULTICAST(a) && \ 337 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL)) 338 #else 339 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 340 (IN6_IS_ADDR_MULTICAST(a) && \ 341 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL)) 342 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 343 (IN6_IS_ADDR_MULTICAST(a) && \ 344 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL)) 345 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 346 (IN6_IS_ADDR_MULTICAST(a) && \ 347 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL)) 348 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 349 (IN6_IS_ADDR_MULTICAST(a) && \ 350 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL)) 351 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 352 (IN6_IS_ADDR_MULTICAST(a) && \ 353 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL)) 354 #endif 355 356 #ifdef _KERNEL /* nonstandard */ 357 /* 358 * KAME Scope 359 */ 360 #define IN6_IS_SCOPE_LINKLOCAL(a) \ 361 ((IN6_IS_ADDR_LINKLOCAL(a)) || \ 362 (IN6_IS_ADDR_MC_LINKLOCAL(a))) 363 364 #define IN6_IS_SCOPE_EMBEDDABLE(__a) \ 365 (IN6_IS_SCOPE_LINKLOCAL(__a) || IN6_IS_ADDR_MC_INTFACELOCAL(__a)) 366 367 #define IFA6_IS_DEPRECATED(a) \ 368 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \ 369 (u_int32_t)((time_second - (a)->ia6_updatetime)) > \ 370 (a)->ia6_lifetime.ia6t_pltime) 371 #define IFA6_IS_INVALID(a) \ 372 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \ 373 (u_int32_t)((time_second - (a)->ia6_updatetime)) > \ 374 (a)->ia6_lifetime.ia6t_vltime) 375 #endif 376 377 /* 378 * IP6 route structure 379 */ 380 #if defined(_NETBSD_SOURCE) 381 struct route_in6 { 382 struct rtentry *ro_rt; 383 struct sockaddr_in6 ro_dst; 384 }; 385 #endif 386 387 /* 388 * Options for use with [gs]etsockopt at the IPV6 level. 389 * First word of comment is data type; bool is stored in int. 390 */ 391 /* no hdrincl */ 392 #if 0 393 /* These are deprecated non-standard options which are no longer supported. */ 394 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */ 395 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */ 396 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */ 397 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */ 398 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */ 399 #endif 400 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */ 401 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */ 402 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */ 403 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */ 404 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */ 405 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */ 406 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */ 407 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */ 408 #if defined(_NETBSD_SOURCE) 409 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */ 410 #endif 411 /* RFC2292 options */ 412 #ifdef _KERNEL 413 #define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */ 414 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */ 415 #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */ 416 #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */ 417 #define IPV6_2292DSTOPTS 23 /* bool; destinaion option */ 418 #define IPV6_2292RTHDR 24 /* bool; routing header */ 419 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */ 420 #endif 421 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */ 422 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */ 423 424 #if 1 /* IPSEC */ 425 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */ 426 #endif 427 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */ 428 429 /* new socket options introduced in RFC3542 */ 430 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */ 431 432 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */ 433 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */ 434 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */ 435 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */ 436 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */ 437 #ifdef _KERNEL 438 #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */ 439 #endif 440 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */ 441 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */ 442 #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt), 443 4 bytes int; MTU notification (cmsg) */ 444 445 /* more new socket options introduced in RFC3542 */ 446 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */ 447 #define IPV6_HOPLIMIT 47 /* int; send hop limit */ 448 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */ 449 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */ 450 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */ 451 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */ 452 453 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */ 454 #ifdef _KERNEL 455 #define IPV6_OTCLASS 58 /* u_int8_t; send traffic class value */ 456 #endif 457 458 #define IPV6_TCLASS 61 /* int; send traffic class value */ 459 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */ 460 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 461 462 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */ 463 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */ 464 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ 465 466 /* 467 * Defaults and limits for options 468 */ 469 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */ 470 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 471 472 /* 473 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP. 474 */ 475 struct ipv6_mreq { 476 struct in6_addr ipv6mr_multiaddr; 477 unsigned int ipv6mr_interface; 478 }; 479 480 /* 481 * IPV6_PKTINFO: Packet information(RFC2292 sec 5) 482 */ 483 struct in6_pktinfo { 484 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 485 unsigned int ipi6_ifindex; /* send/recv interface index */ 486 }; 487 488 /* 489 * Control structure for IPV6_RECVPATHMTU socket option. 490 */ 491 struct ip6_mtuinfo { 492 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */ 493 uint32_t ip6m_mtu; 494 }; 495 496 /* 497 * Argument for IPV6_PORTRANGE: 498 * - which range to search when port is unspecified at bind() or connect() 499 */ 500 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */ 501 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 502 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 503 504 #if defined(_NETBSD_SOURCE) 505 /* 506 * Definitions for inet6 sysctl operations. 507 * 508 * Third level is protocol number. 509 * Fourth level is desired variable within that protocol. 510 */ 511 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */ 512 513 #define CTL_IPV6PROTO_NAMES { \ 514 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 515 { 0, 0 }, \ 516 { "tcp6", CTLTYPE_NODE }, \ 517 { 0, 0 }, \ 518 { 0, 0 }, \ 519 { 0, 0 }, \ 520 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 521 { 0, 0 }, \ 522 { 0, 0 }, \ 523 { "udp6", CTLTYPE_NODE }, \ 524 { 0, 0 }, \ 525 { 0, 0 }, \ 526 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 527 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 528 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 529 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 530 { 0, 0 }, \ 531 { "ip6", CTLTYPE_NODE }, \ 532 { 0, 0 }, \ 533 { 0, 0 }, \ 534 { 0, 0 }, \ 535 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 536 { 0, 0 }, \ 537 { "ipsec6", CTLTYPE_NODE }, \ 538 { 0, 0 }, \ 539 { 0, 0 }, \ 540 { 0, 0 }, \ 541 { 0, 0 }, \ 542 { 0, 0 }, \ 543 { 0, 0 }, \ 544 { "icmp6", CTLTYPE_NODE }, \ 545 { 0, 0 }, \ 546 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 547 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 548 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 549 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 550 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 551 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 552 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 553 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 554 { 0, 0 }, \ 555 { 0, 0 }, \ 556 { 0, 0 }, \ 557 { "pim6", CTLTYPE_NODE }, \ 558 } 559 560 /* 561 * Names for IP sysctl objects 562 */ 563 #define IPV6CTL_FORWARDING 1 /* act as router */ 564 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/ 565 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */ 566 #ifdef notyet 567 #define IPV6CTL_DEFMTU 4 /* default MTU */ 568 #endif 569 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */ 570 #define IPV6CTL_STATS 6 /* stats */ 571 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */ 572 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */ 573 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */ 574 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */ 575 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */ 576 #define IPV6CTL_ACCEPT_RTADV 12 577 #define IPV6CTL_KEEPFAITH 13 578 #define IPV6CTL_LOG_INTERVAL 14 579 #define IPV6CTL_HDRNESTLIMIT 15 580 #define IPV6CTL_DAD_COUNT 16 581 #define IPV6CTL_AUTO_FLOWLABEL 17 582 #define IPV6CTL_DEFMCASTHLIM 18 583 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */ 584 #define IPV6CTL_KAME_VERSION 20 585 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */ 586 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */ 587 /* 23: reserved */ 588 #define IPV6CTL_V6ONLY 24 589 /* 25 to 27: reserved */ 590 #define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */ 591 #define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */ 592 #define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */ 593 #define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */ 594 /* 32 to 38: reserved */ 595 #define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */ 596 /* 40: reserved */ 597 #define IPV6CTL_MAXFRAGS 41 /* max fragments */ 598 #define IPV6CTL_IFQ 42 /* ip6intrq node */ 599 /* New entries should be added here from current IPV6CTL_MAXID value. */ 600 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 601 #define IPV6CTL_MAXID 43 602 603 #define IPV6CTL_NAMES { \ 604 { 0, 0 }, \ 605 { "forwarding", CTLTYPE_INT }, \ 606 { "redirect", CTLTYPE_INT }, \ 607 { "hlim", CTLTYPE_INT }, \ 608 { "mtu", CTLTYPE_INT }, \ 609 { "forwsrcrt", CTLTYPE_INT }, \ 610 { "stats", CTLTYPE_STRUCT }, \ 611 { 0, 0 }, \ 612 { "mrtproto", CTLTYPE_INT }, \ 613 { "maxfragpackets", CTLTYPE_INT }, \ 614 { "sourcecheck", CTLTYPE_INT }, \ 615 { "sourcecheck_logint", CTLTYPE_INT }, \ 616 { "accept_rtadv", CTLTYPE_INT }, \ 617 { "keepfaith", CTLTYPE_INT }, \ 618 { "log_interval", CTLTYPE_INT }, \ 619 { "hdrnestlimit", CTLTYPE_INT }, \ 620 { "dad_count", CTLTYPE_INT }, \ 621 { "auto_flowlabel", CTLTYPE_INT }, \ 622 { "defmcasthlim", CTLTYPE_INT }, \ 623 { "gifhlim", CTLTYPE_INT }, \ 624 { "kame_version", CTLTYPE_STRING }, \ 625 { "use_deprecated", CTLTYPE_INT }, \ 626 { "rr_prune", CTLTYPE_INT }, \ 627 { 0, 0 }, \ 628 { "v6only", CTLTYPE_INT }, \ 629 { 0, 0 }, \ 630 { 0, 0 }, \ 631 { 0, 0 }, \ 632 { "anonportmin", CTLTYPE_INT }, \ 633 { "anonportmax", CTLTYPE_INT }, \ 634 { "lowportmin", CTLTYPE_INT }, \ 635 { "lowportmax", CTLTYPE_INT }, \ 636 { 0, 0 }, \ 637 { 0, 0 }, \ 638 { 0, 0 }, \ 639 { 0, 0 }, \ 640 { 0, 0 }, \ 641 { 0, 0 }, \ 642 { 0, 0 }, \ 643 { 0, 0 }, \ 644 { 0, 0 }, \ 645 { "maxfrags", CTLTYPE_INT }, \ 646 { "ifq", CTLTYPE_NODE }, \ 647 } 648 649 #endif /* _NETBSD_SOURCE */ 650 651 #ifdef _KERNEL 652 struct cmsghdr; 653 654 /* 655 * in6_cksum_phdr: 656 * 657 * Compute significant parts of the IPv6 checksum pseudo-header 658 * for use in a delayed TCP/UDP checksum calculation. 659 * 660 * Args: 661 * 662 * src Source IPv6 address 663 * dst Destination IPv6 address 664 * len htonl(proto-hdr-len) 665 * nxt htonl(next-proto-number) 666 * 667 * NOTE: We expect the src and dst addresses to be 16-bit 668 * aligned! 669 */ 670 static __inline u_int16_t __attribute__((__unused__)) 671 in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst, 672 u_int32_t len, u_int32_t nxt) 673 { 674 u_int32_t sum = 0; 675 const u_int16_t *w; 676 677 /*LINTED*/ 678 w = (const u_int16_t *) src; 679 sum += w[0]; 680 if (!IN6_IS_SCOPE_LINKLOCAL(src)) 681 sum += w[1]; 682 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 683 sum += w[6]; sum += w[7]; 684 685 /*LINTED*/ 686 w = (const u_int16_t *) dst; 687 sum += w[0]; 688 if (!IN6_IS_SCOPE_LINKLOCAL(dst)) 689 sum += w[1]; 690 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 691 sum += w[6]; sum += w[7]; 692 693 sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/); 694 695 sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/); 696 697 sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/); 698 699 if (sum > 0xffff) 700 sum -= 0xffff; 701 702 return (sum); 703 } 704 705 struct mbuf; 706 struct ifnet; 707 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t)); 708 void in6_delayed_cksum __P((struct mbuf *)); 709 int in6_localaddr __P((struct in6_addr *)); 710 int in6_addrscope __P((struct in6_addr *)); 711 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *)); 712 extern void in6_if_up __P((struct ifnet *)); 713 #ifndef __FreeBSD__ 714 extern int in6_src_sysctl __P((void *, size_t *, void *, size_t)); 715 #endif 716 extern void addrsel_policy_init __P((void)); 717 extern u_char ip6_protox[]; 718 719 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 720 #define sin6tosa(sin6) ((struct sockaddr *)(sin6)) 721 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 722 #endif /* _KERNEL */ 723 724 #if defined(_NETBSD_SOURCE) 725 726 #include <machine/ansi.h> 727 728 #ifdef _BSD_SIZE_T_ 729 typedef _BSD_SIZE_T_ size_t; 730 #define _SIZE_T 731 #undef _BSD_SIZE_T_ 732 #endif 733 734 #include <sys/cdefs.h> 735 736 __BEGIN_DECLS 737 struct cmsghdr; 738 739 extern int inet6_option_space __P((int)); 740 extern int inet6_option_init __P((void *, struct cmsghdr **, int)); 741 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *, 742 int, int)); 743 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int)); 744 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **)); 745 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int)); 746 747 extern size_t inet6_rthdr_space __P((int, int)); 748 extern struct cmsghdr *inet6_rthdr_init __P((void *, int)); 749 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *, 750 unsigned int)); 751 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int)); 752 #if 0 /* not implemented yet */ 753 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *)); 754 #endif 755 extern int inet6_rthdr_segments __P((const struct cmsghdr *)); 756 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int)); 757 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int)); 758 759 extern int inet6_opt_init __P((void *, socklen_t)); 760 extern int inet6_opt_append __P((void *, socklen_t, int, uint8_t, 761 socklen_t, uint8_t, void **)); 762 extern int inet6_opt_finish __P((void *, socklen_t, int)); 763 extern int inet6_opt_set_val __P((void *, int, void *, socklen_t)); 764 765 extern int inet6_opt_next __P((void *, socklen_t, int, uint8_t *, 766 socklen_t *, void **)); 767 extern int inet6_opt_find __P((void *, socklen_t, int, uint8_t, 768 socklen_t *, void **)); 769 extern int inet6_opt_get_val __P((void *, int, void *, socklen_t)); 770 extern socklen_t inet6_rth_space __P((int, int)); 771 extern void *inet6_rth_init __P((void *, socklen_t, int, int)); 772 extern int inet6_rth_add __P((void *, const struct in6_addr *)); 773 extern int inet6_rth_reverse __P((const void *, void *)); 774 extern int inet6_rth_segments __P((const void *)); 775 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int)); 776 __END_DECLS 777 #endif /* _NETBSD_SOURCE */ 778 779 #endif /* !_NETINET6_IN6_H_ */
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