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sys/netinet6/in6.h
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1 /* $NetBSD: in6.h,v 1.66 2007/12/25 18:33:47 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 #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 #define IN6_ARE_ADDR_EQUAL(a, b) \ 228 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 229 230 /* 231 * Unspecified 232 */ 233 #define IN6_IS_ADDR_UNSPECIFIED(a) \ 234 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 235 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 236 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 237 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0)) 238 239 /* 240 * Loopback 241 */ 242 #define IN6_IS_ADDR_LOOPBACK(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]) == ntohl(1))) 247 248 /* 249 * IPv4 compatible 250 */ 251 #define IN6_IS_ADDR_V4COMPAT(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]) != 0) && \ 256 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1))) 257 258 /* 259 * Mapped 260 */ 261 #define IN6_IS_ADDR_V4MAPPED(a) \ 262 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 263 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 264 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff))) 265 266 /* 267 * KAME Scope Values 268 */ 269 270 #ifdef _KERNEL /* XXX nonstandard */ 271 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01 272 #define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01 273 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 274 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 275 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 276 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e 277 #else 278 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01 279 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02 280 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05 281 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 282 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e 283 #endif 284 285 /* 286 * Unicast Scope 287 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). 288 */ 289 #define IN6_IS_ADDR_LINKLOCAL(a) \ 290 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 291 #define IN6_IS_ADDR_SITELOCAL(a) \ 292 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 293 294 /* 295 * Multicast 296 */ 297 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) 298 299 #ifdef _KERNEL /* XXX nonstandard */ 300 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 301 #else 302 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 303 #endif 304 305 /* 306 * Multicast Scope 307 */ 308 #ifdef _KERNEL /* refers nonstandard items */ 309 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 310 (IN6_IS_ADDR_MULTICAST(a) && \ 311 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL)) 312 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \ 313 (IN6_IS_ADDR_MULTICAST(a) && \ 314 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL)) 315 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 316 (IN6_IS_ADDR_MULTICAST(a) && \ 317 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL)) 318 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 319 (IN6_IS_ADDR_MULTICAST(a) && \ 320 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL)) 321 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 322 (IN6_IS_ADDR_MULTICAST(a) && \ 323 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL)) 324 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 325 (IN6_IS_ADDR_MULTICAST(a) && \ 326 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL)) 327 #else 328 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 329 (IN6_IS_ADDR_MULTICAST(a) && \ 330 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL)) 331 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 332 (IN6_IS_ADDR_MULTICAST(a) && \ 333 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL)) 334 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 335 (IN6_IS_ADDR_MULTICAST(a) && \ 336 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL)) 337 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 338 (IN6_IS_ADDR_MULTICAST(a) && \ 339 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL)) 340 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 341 (IN6_IS_ADDR_MULTICAST(a) && \ 342 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL)) 343 #endif 344 345 #ifdef _KERNEL /* nonstandard */ 346 /* 347 * KAME Scope 348 */ 349 #define IN6_IS_SCOPE_LINKLOCAL(a) \ 350 ((IN6_IS_ADDR_LINKLOCAL(a)) || \ 351 (IN6_IS_ADDR_MC_LINKLOCAL(a))) 352 353 #define IN6_IS_SCOPE_EMBEDDABLE(__a) \ 354 (IN6_IS_SCOPE_LINKLOCAL(__a) || IN6_IS_ADDR_MC_INTFACELOCAL(__a)) 355 356 #define IFA6_IS_DEPRECATED(a) \ 357 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \ 358 (u_int32_t)((time_second - (a)->ia6_updatetime)) > \ 359 (a)->ia6_lifetime.ia6t_pltime) 360 #define IFA6_IS_INVALID(a) \ 361 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \ 362 (u_int32_t)((time_second - (a)->ia6_updatetime)) > \ 363 (a)->ia6_lifetime.ia6t_vltime) 364 #endif 365 366 /* 367 * Options for use with [gs]etsockopt at the IPV6 level. 368 * First word of comment is data type; bool is stored in int. 369 */ 370 /* no hdrincl */ 371 #if 0 372 /* These are deprecated non-standard options which are no longer supported. */ 373 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */ 374 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */ 375 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */ 376 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */ 377 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */ 378 #endif 379 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */ 380 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */ 381 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */ 382 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */ 383 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */ 384 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */ 385 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */ 386 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */ 387 #if defined(_NETBSD_SOURCE) 388 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */ 389 #endif 390 /* RFC2292 options */ 391 #ifdef _KERNEL 392 #define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */ 393 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */ 394 #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */ 395 #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */ 396 #define IPV6_2292DSTOPTS 23 /* bool; destination option */ 397 #define IPV6_2292RTHDR 24 /* bool; routing header */ 398 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */ 399 #endif 400 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */ 401 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */ 402 403 #if 1 /* IPSEC */ 404 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */ 405 #endif 406 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */ 407 408 /* new socket options introduced in RFC3542 */ 409 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */ 410 411 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */ 412 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */ 413 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */ 414 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */ 415 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */ 416 #ifdef _KERNEL 417 #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */ 418 #endif 419 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */ 420 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */ 421 #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt), 422 4 bytes int; MTU notification (cmsg) */ 423 424 /* more new socket options introduced in RFC3542 */ 425 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */ 426 #define IPV6_HOPLIMIT 47 /* int; send hop limit */ 427 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */ 428 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */ 429 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */ 430 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */ 431 432 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */ 433 #ifdef _KERNEL 434 #define IPV6_OTCLASS 58 /* u_int8_t; send traffic class value */ 435 #endif 436 437 #define IPV6_TCLASS 61 /* int; send traffic class value */ 438 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */ 439 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 440 441 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */ 442 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */ 443 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ 444 445 /* 446 * Defaults and limits for options 447 */ 448 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */ 449 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 450 451 /* 452 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP. 453 */ 454 struct ipv6_mreq { 455 struct in6_addr ipv6mr_multiaddr; 456 unsigned int ipv6mr_interface; 457 }; 458 459 /* 460 * IPV6_PKTINFO: Packet information(RFC2292 sec 5) 461 */ 462 struct in6_pktinfo { 463 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 464 unsigned int ipi6_ifindex; /* send/recv interface index */ 465 }; 466 467 /* 468 * Control structure for IPV6_RECVPATHMTU socket option. 469 */ 470 struct ip6_mtuinfo { 471 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */ 472 uint32_t ip6m_mtu; 473 }; 474 475 /* 476 * Argument for IPV6_PORTRANGE: 477 * - which range to search when port is unspecified at bind() or connect() 478 */ 479 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */ 480 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 481 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 482 483 #if defined(_NETBSD_SOURCE) 484 /* 485 * Definitions for inet6 sysctl operations. 486 * 487 * Third level is protocol number. 488 * Fourth level is desired variable within that protocol. 489 */ 490 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */ 491 492 #define CTL_IPV6PROTO_NAMES { \ 493 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 494 { 0, 0 }, \ 495 { "tcp6", CTLTYPE_NODE }, \ 496 { 0, 0 }, \ 497 { 0, 0 }, \ 498 { 0, 0 }, \ 499 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 500 { 0, 0 }, \ 501 { 0, 0 }, \ 502 { "udp6", CTLTYPE_NODE }, \ 503 { 0, 0 }, \ 504 { 0, 0 }, \ 505 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 506 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 507 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 508 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 509 { 0, 0 }, \ 510 { "ip6", CTLTYPE_NODE }, \ 511 { 0, 0 }, \ 512 { 0, 0 }, \ 513 { 0, 0 }, \ 514 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 515 { 0, 0 }, \ 516 { "ipsec6", CTLTYPE_NODE }, \ 517 { 0, 0 }, \ 518 { 0, 0 }, \ 519 { 0, 0 }, \ 520 { 0, 0 }, \ 521 { 0, 0 }, \ 522 { 0, 0 }, \ 523 { "icmp6", CTLTYPE_NODE }, \ 524 { 0, 0 }, \ 525 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 531 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 532 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 533 { 0, 0 }, \ 534 { 0, 0 }, \ 535 { 0, 0 }, \ 536 { "pim6", CTLTYPE_NODE }, \ 537 } 538 539 /* 540 * Names for IP sysctl objects 541 */ 542 #define IPV6CTL_FORWARDING 1 /* act as router */ 543 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/ 544 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */ 545 #ifdef notyet 546 #define IPV6CTL_DEFMTU 4 /* default MTU */ 547 #endif 548 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */ 549 #define IPV6CTL_STATS 6 /* stats */ 550 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */ 551 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */ 552 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */ 553 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */ 554 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */ 555 #define IPV6CTL_ACCEPT_RTADV 12 556 #define IPV6CTL_KEEPFAITH 13 557 #define IPV6CTL_LOG_INTERVAL 14 558 #define IPV6CTL_HDRNESTLIMIT 15 559 #define IPV6CTL_DAD_COUNT 16 560 #define IPV6CTL_AUTO_FLOWLABEL 17 561 #define IPV6CTL_DEFMCASTHLIM 18 562 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */ 563 #define IPV6CTL_KAME_VERSION 20 564 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */ 565 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */ 566 /* 23: reserved */ 567 #define IPV6CTL_V6ONLY 24 568 /* 25 to 27: reserved */ 569 #define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */ 570 #define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */ 571 #define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */ 572 #define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */ 573 /* 32 to 38: reserved */ 574 #define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */ 575 /* 40: reserved */ 576 #define IPV6CTL_MAXFRAGS 41 /* max fragments */ 577 #define IPV6CTL_IFQ 42 /* ip6intrq node */ 578 /* New entries should be added here from current IPV6CTL_MAXID value. */ 579 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 580 #define IPV6CTL_MAXID 43 581 582 #define IPV6CTL_NAMES { \ 583 { 0, 0 }, \ 584 { "forwarding", CTLTYPE_INT }, \ 585 { "redirect", CTLTYPE_INT }, \ 586 { "hlim", CTLTYPE_INT }, \ 587 { "mtu", CTLTYPE_INT }, \ 588 { "forwsrcrt", CTLTYPE_INT }, \ 589 { "stats", CTLTYPE_STRUCT }, \ 590 { 0, 0 }, \ 591 { "mrtproto", CTLTYPE_INT }, \ 592 { "maxfragpackets", CTLTYPE_INT }, \ 593 { "sourcecheck", CTLTYPE_INT }, \ 594 { "sourcecheck_logint", CTLTYPE_INT }, \ 595 { "accept_rtadv", CTLTYPE_INT }, \ 596 { "keepfaith", CTLTYPE_INT }, \ 597 { "log_interval", CTLTYPE_INT }, \ 598 { "hdrnestlimit", CTLTYPE_INT }, \ 599 { "dad_count", CTLTYPE_INT }, \ 600 { "auto_flowlabel", CTLTYPE_INT }, \ 601 { "defmcasthlim", CTLTYPE_INT }, \ 602 { "gifhlim", CTLTYPE_INT }, \ 603 { "kame_version", CTLTYPE_STRING }, \ 604 { "use_deprecated", CTLTYPE_INT }, \ 605 { "rr_prune", CTLTYPE_INT }, \ 606 { 0, 0 }, \ 607 { "v6only", CTLTYPE_INT }, \ 608 { 0, 0 }, \ 609 { 0, 0 }, \ 610 { 0, 0 }, \ 611 { "anonportmin", CTLTYPE_INT }, \ 612 { "anonportmax", CTLTYPE_INT }, \ 613 { "lowportmin", CTLTYPE_INT }, \ 614 { "lowportmax", CTLTYPE_INT }, \ 615 { 0, 0 }, \ 616 { 0, 0 }, \ 617 { 0, 0 }, \ 618 { 0, 0 }, \ 619 { 0, 0 }, \ 620 { 0, 0 }, \ 621 { 0, 0 }, \ 622 { 0, 0 }, \ 623 { 0, 0 }, \ 624 { "maxfrags", CTLTYPE_INT }, \ 625 { "ifq", CTLTYPE_NODE }, \ 626 } 627 628 #endif /* _NETBSD_SOURCE */ 629 630 #ifdef _KERNEL 631 struct cmsghdr; 632 633 /* 634 * in6_cksum_phdr: 635 * 636 * Compute significant parts of the IPv6 checksum pseudo-header 637 * for use in a delayed TCP/UDP checksum calculation. 638 * 639 * Args: 640 * 641 * src Source IPv6 address 642 * dst Destination IPv6 address 643 * len htonl(proto-hdr-len) 644 * nxt htonl(next-proto-number) 645 * 646 * NOTE: We expect the src and dst addresses to be 16-bit 647 * aligned! 648 */ 649 static __inline u_int16_t __unused 650 in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst, 651 u_int32_t len, u_int32_t nxt) 652 { 653 u_int32_t sum = 0; 654 const u_int16_t *w; 655 656 /*LINTED*/ 657 w = (const u_int16_t *) src; 658 sum += w[0]; 659 if (!IN6_IS_SCOPE_LINKLOCAL(src)) 660 sum += w[1]; 661 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 662 sum += w[6]; sum += w[7]; 663 664 /*LINTED*/ 665 w = (const u_int16_t *) dst; 666 sum += w[0]; 667 if (!IN6_IS_SCOPE_LINKLOCAL(dst)) 668 sum += w[1]; 669 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 670 sum += w[6]; sum += w[7]; 671 672 sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/); 673 674 sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/); 675 676 sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/); 677 678 if (sum > 0xffff) 679 sum -= 0xffff; 680 681 return (sum); 682 } 683 684 struct mbuf; 685 struct ifnet; 686 int sockaddr_in6_cmp(const struct sockaddr *, const struct sockaddr *); 687 int in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t); 688 void in6_delayed_cksum(struct mbuf *); 689 int in6_localaddr(const struct in6_addr *); 690 int in6_addrscope(const struct in6_addr *); 691 struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *); 692 extern void in6_if_up(struct ifnet *); 693 #ifndef __FreeBSD__ 694 extern int in6_src_sysctl(void *, size_t *, void *, size_t); 695 #endif 696 extern void addrsel_policy_init(void); 697 extern u_char ip6_protox[]; 698 699 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 700 #define satocsin6(sa) ((const struct sockaddr_in6 *)(sa)) 701 #define sin6tosa(sin6) ((struct sockaddr *)(sin6)) 702 #define sin6tocsa(sin6) ((const struct sockaddr *)(sin6)) 703 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 704 705 static inline void 706 sockaddr_in6_init1(struct sockaddr_in6 *sin6, const struct in6_addr *addr, 707 in_port_t port, uint32_t flowinfo, uint32_t scope_id) 708 { 709 sin6->sin6_port = port; 710 sin6->sin6_flowinfo = flowinfo; 711 sin6->sin6_addr = *addr; 712 sin6->sin6_scope_id = scope_id; 713 } 714 715 static inline void 716 sockaddr_in6_init(struct sockaddr_in6 *sin6, const struct in6_addr *addr, 717 in_port_t port, uint32_t flowinfo, uint32_t scope_id) 718 { 719 sin6->sin6_family = AF_INET6; 720 sin6->sin6_len = sizeof(*sin6); 721 sockaddr_in6_init1(sin6, addr, port, flowinfo, scope_id); 722 } 723 724 static inline struct sockaddr * 725 sockaddr_in6_alloc(const struct in6_addr *addr, in_port_t port, 726 uint32_t flowinfo, uint32_t scope_id, int flags) 727 { 728 struct sockaddr *sa; 729 730 if ((sa = sockaddr_alloc(AF_INET6, sizeof(struct sockaddr_in6), 731 flags)) == NULL) 732 return NULL; 733 734 sockaddr_in6_init1(satosin6(sa), addr, port, flowinfo, scope_id); 735 736 return sa; 737 } 738 #endif /* _KERNEL */ 739 740 #if defined(_NETBSD_SOURCE) 741 742 #include <machine/ansi.h> 743 744 #ifdef _BSD_SIZE_T_ 745 typedef _BSD_SIZE_T_ size_t; 746 #define _SIZE_T 747 #undef _BSD_SIZE_T_ 748 #endif 749 750 #include <sys/cdefs.h> 751 752 __BEGIN_DECLS 753 struct cmsghdr; 754 755 void in6_sin6_2_sin(struct sockaddr_in *, struct sockaddr_in6 *); 756 void in6_sin_2_v4mapsin6(struct sockaddr_in *, struct sockaddr_in6 *); 757 void in6_sin6_2_sin_in_sock(struct sockaddr *); 758 void in6_sin_2_v4mapsin6_in_sock(struct sockaddr **); 759 760 extern int inet6_option_space(int); 761 extern int inet6_option_init(void *, struct cmsghdr **, int); 762 extern int inet6_option_append(struct cmsghdr *, const uint8_t *, 763 int, int); 764 extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int); 765 extern int inet6_option_next(const struct cmsghdr *, uint8_t **); 766 extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int); 767 768 extern size_t inet6_rthdr_space(int, int); 769 extern struct cmsghdr *inet6_rthdr_init(void *, int); 770 extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *, 771 unsigned int); 772 extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int); 773 #if 0 /* not implemented yet */ 774 extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *); 775 #endif 776 extern int inet6_rthdr_segments(const struct cmsghdr *); 777 extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int); 778 extern int inet6_rthdr_getflags(const struct cmsghdr *, int); 779 780 extern int inet6_opt_init(void *, socklen_t); 781 extern int inet6_opt_append(void *, socklen_t, int, uint8_t, 782 socklen_t, uint8_t, void **); 783 extern int inet6_opt_finish(void *, socklen_t, int); 784 extern int inet6_opt_set_val(void *, int, void *, socklen_t); 785 786 extern int inet6_opt_next(void *, socklen_t, int, uint8_t *, 787 socklen_t *, void **); 788 extern int inet6_opt_find(void *, socklen_t, int, uint8_t, 789 socklen_t *, void **); 790 extern int inet6_opt_get_val(void *, int, void *, socklen_t); 791 extern socklen_t inet6_rth_space(int, int); 792 extern void *inet6_rth_init(void *, socklen_t, int, int); 793 extern int inet6_rth_add(void *, const struct in6_addr *); 794 extern int inet6_rth_reverse(const void *, void *); 795 extern int inet6_rth_segments(const void *); 796 extern struct in6_addr *inet6_rth_getaddr(const void *, int); 797 __END_DECLS 798 #endif /* _NETBSD_SOURCE */ 799 800 #endif /* !_NETINET6_IN6_H_ */
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