in6.h revision 1.80
1 /* $NetBSD: in6.h,v 1.80 2014/12/02 19:36:58 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 #include <sys/featuretest.h> 68 69 #ifndef __KAME_NETINET_IN_H_INCLUDED_ 70 #error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553" 71 #endif 72 73 #include <sys/socket.h> 74 75 /* 76 * Identification of the network protocol stack 77 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE 78 * has the table of implementation/integration differences. 79 */ 80 #define __KAME__ 81 #define __KAME_VERSION "NetBSD-current" 82 83 /* 84 * Local port number conventions: 85 * 86 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root), 87 * unless a kernel is compiled with IPNOPRIVPORTS defined. 88 * 89 * When a user does a bind(2) or connect(2) with a port number of zero, 90 * a non-conflicting local port address is chosen. 91 * 92 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although 93 * that is settable by sysctl(3); net.inet.ip.anonportmin and 94 * net.inet.ip.anonportmax respectively. 95 * 96 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 97 * default assignment range. 98 * 99 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 100 * 101 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT, 102 * and exists only for FreeBSD compatibility purposes. 103 * 104 * The value IP_PORTRANGE_LOW changes the range to the "low" are 105 * that is (by convention) restricted to privileged processes. 106 * This convention is based on "vouchsafe" principles only. 107 * It is only secure if you trust the remote host to restrict these ports. 108 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX. 109 */ 110 111 #if defined(_NETBSD_SOURCE) 112 #define IPV6PORT_RESERVED 1024 113 #define IPV6PORT_ANONMIN 49152 114 #define IPV6PORT_ANONMAX 65535 115 #define IPV6PORT_RESERVEDMIN 600 116 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1) 117 #endif 118 119 /* 120 * IPv6 address 121 */ 122 struct in6_addr { 123 union { 124 __uint8_t __u6_addr8[16]; 125 __uint16_t __u6_addr16[8]; 126 uint32_t __u6_addr32[4]; 127 } __u6_addr; /* 128-bit IP6 address */ 128 }; 129 130 #define s6_addr __u6_addr.__u6_addr8 131 #ifdef _KERNEL /* XXX nonstandard */ 132 #define s6_addr8 __u6_addr.__u6_addr8 133 #define s6_addr16 __u6_addr.__u6_addr16 134 #define s6_addr32 __u6_addr.__u6_addr32 135 #endif 136 137 #define INET6_ADDRSTRLEN 46 138 139 /* 140 * Socket address for IPv6 141 */ 142 #if defined(_NETBSD_SOURCE) 143 #define SIN6_LEN 144 #endif 145 struct sockaddr_in6 { 146 uint8_t sin6_len; /* length of this struct(socklen_t)*/ 147 sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */ 148 in_port_t sin6_port; /* Transport layer port */ 149 uint32_t sin6_flowinfo; /* IP6 flow information */ 150 struct in6_addr sin6_addr; /* IP6 address */ 151 uint32_t sin6_scope_id; /* scope zone index */ 152 }; 153 154 /* 155 * Local definition for masks 156 */ 157 #ifdef _KERNEL /* XXX nonstandard */ 158 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}} 159 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \ 160 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 161 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 162 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 163 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 164 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}} 165 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 166 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 167 #endif 168 169 #ifdef _KERNEL 170 extern const struct sockaddr_in6 sa6_any; 171 172 extern const struct in6_addr in6mask0; 173 extern const struct in6_addr in6mask32; 174 extern const struct in6_addr in6mask64; 175 extern const struct in6_addr in6mask96; 176 extern const struct in6_addr in6mask128; 177 #endif /* _KERNEL */ 178 179 /* 180 * Macros started with IPV6_ADDR is KAME local 181 */ 182 #ifdef _KERNEL /* XXX nonstandard */ 183 #if BYTE_ORDER == BIG_ENDIAN 184 #define IPV6_ADDR_INT32_ONE 1 185 #define IPV6_ADDR_INT32_TWO 2 186 #define IPV6_ADDR_INT32_MNL 0xff010000 187 #define IPV6_ADDR_INT32_MLL 0xff020000 188 #define IPV6_ADDR_INT32_SMP 0x0000ffff 189 #define IPV6_ADDR_INT16_ULL 0xfe80 190 #define IPV6_ADDR_INT16_USL 0xfec0 191 #define IPV6_ADDR_INT16_MLL 0xff02 192 #elif BYTE_ORDER == LITTLE_ENDIAN 193 #define IPV6_ADDR_INT32_ONE 0x01000000 194 #define IPV6_ADDR_INT32_TWO 0x02000000 195 #define IPV6_ADDR_INT32_MNL 0x000001ff 196 #define IPV6_ADDR_INT32_MLL 0x000002ff 197 #define IPV6_ADDR_INT32_SMP 0xffff0000 198 #define IPV6_ADDR_INT16_ULL 0x80fe 199 #define IPV6_ADDR_INT16_USL 0xc0fe 200 #define IPV6_ADDR_INT16_MLL 0x02ff 201 #endif 202 #endif 203 204 /* 205 * Definition of some useful macros to handle IP6 addresses 206 */ 207 #define IN6ADDR_ANY_INIT \ 208 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 209 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 210 #define IN6ADDR_LOOPBACK_INIT \ 211 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 212 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 213 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \ 214 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 215 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 216 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \ 217 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 218 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 219 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \ 220 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 221 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}} 222 223 extern const struct in6_addr in6addr_any; 224 extern const struct in6_addr in6addr_loopback; 225 extern const struct in6_addr in6addr_nodelocal_allnodes; 226 extern const struct in6_addr in6addr_linklocal_allnodes; 227 extern const struct in6_addr in6addr_linklocal_allrouters; 228 229 #define IN6_ARE_ADDR_EQUAL(a, b) \ 230 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 231 232 /* 233 * Unspecified 234 */ 235 #define IN6_IS_ADDR_UNSPECIFIED(a) \ 236 ((a)->__u6_addr.__u6_addr32[0] == 0 && \ 237 (a)->__u6_addr.__u6_addr32[1] == 0 && \ 238 (a)->__u6_addr.__u6_addr32[2] == 0 && \ 239 (a)->__u6_addr.__u6_addr32[3] == 0) 240 241 /* 242 * Loopback 243 */ 244 #define IN6_IS_ADDR_LOOPBACK(a) \ 245 ((a)->__u6_addr.__u6_addr32[0] == 0 && \ 246 (a)->__u6_addr.__u6_addr32[1] == 0 && \ 247 (a)->__u6_addr.__u6_addr32[2] == 0 && \ 248 (a)->__u6_addr.__u6_addr32[3] == ntohl(1)) 249 250 /* 251 * IPv4 compatible 252 */ 253 #define IN6_IS_ADDR_V4COMPAT(a) \ 254 ((a)->__u6_addr.__u6_addr32[0] == 0 && \ 255 (a)->__u6_addr.__u6_addr32[1] == 0 && \ 256 (a)->__u6_addr.__u6_addr32[2] == 0 && \ 257 (a)->__u6_addr.__u6_addr32[3] != 0 && \ 258 (a)->__u6_addr.__u6_addr32[3] != ntohl(1)) 259 260 /* 261 * Mapped 262 */ 263 #define IN6_IS_ADDR_V4MAPPED(a) \ 264 ((a)->__u6_addr.__u6_addr32[0] == 0 && \ 265 (a)->__u6_addr.__u6_addr32[1] == 0 && \ 266 (a)->__u6_addr.__u6_addr32[2] == ntohl(0x0000ffff)) 267 268 /* 269 * KAME Scope Values 270 */ 271 272 #ifdef _KERNEL /* XXX nonstandard */ 273 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01 274 #define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01 275 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 276 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 277 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 278 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e 279 #else 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 #endif 286 287 /* 288 * Unicast Scope 289 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). 290 */ 291 #define IN6_IS_ADDR_LINKLOCAL(a) \ 292 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 293 #define IN6_IS_ADDR_SITELOCAL(a) \ 294 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 295 296 /* 297 * Multicast 298 */ 299 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) 300 301 #ifdef _KERNEL /* XXX nonstandard */ 302 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 303 #else 304 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 305 #endif 306 307 /* 308 * Multicast Scope 309 */ 310 #ifdef _KERNEL /* refers nonstandard items */ 311 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 312 (IN6_IS_ADDR_MULTICAST(a) && \ 313 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL)) 314 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \ 315 (IN6_IS_ADDR_MULTICAST(a) && \ 316 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL)) 317 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 318 (IN6_IS_ADDR_MULTICAST(a) && \ 319 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL)) 320 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 321 (IN6_IS_ADDR_MULTICAST(a) && \ 322 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL)) 323 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 324 (IN6_IS_ADDR_MULTICAST(a) && \ 325 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL)) 326 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 327 (IN6_IS_ADDR_MULTICAST(a) && \ 328 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL)) 329 #else 330 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 331 (IN6_IS_ADDR_MULTICAST(a) && \ 332 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL)) 333 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 334 (IN6_IS_ADDR_MULTICAST(a) && \ 335 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL)) 336 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 337 (IN6_IS_ADDR_MULTICAST(a) && \ 338 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL)) 339 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 340 (IN6_IS_ADDR_MULTICAST(a) && \ 341 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL)) 342 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 343 (IN6_IS_ADDR_MULTICAST(a) && \ 344 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL)) 345 #endif 346 347 #ifdef _KERNEL /* nonstandard */ 348 /* 349 * KAME Scope 350 */ 351 #define IN6_IS_SCOPE_LINKLOCAL(a) \ 352 ((IN6_IS_ADDR_LINKLOCAL(a)) || \ 353 (IN6_IS_ADDR_MC_LINKLOCAL(a))) 354 355 #define IN6_IS_SCOPE_EMBEDDABLE(__a) \ 356 (IN6_IS_SCOPE_LINKLOCAL(__a) || IN6_IS_ADDR_MC_INTFACELOCAL(__a)) 357 358 #define IFA6_IS_DEPRECATED(a) \ 359 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \ 360 (u_int32_t)((time_second - (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_second - (a)->ia6_updatetime)) > \ 365 (a)->ia6_lifetime.ia6t_vltime) 366 #endif 367 368 /* 369 * Options for use with [gs]etsockopt at the IPV6 level. 370 * First word of comment is data type; bool is stored in int. 371 */ 372 /* no hdrincl */ 373 #if 0 374 /* These are deprecated non-standard options which are no longer supported. */ 375 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */ 376 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */ 377 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */ 378 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */ 379 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */ 380 #endif 381 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */ 382 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */ 383 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */ 384 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */ 385 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */ 386 /* The join and leave membership option numbers need to match with the v4 ones */ 387 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */ 388 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */ 389 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */ 390 #if defined(_NETBSD_SOURCE) 391 #define IPV6_PORTALGO 17 /* int; port selection algo (rfc6056) */ 392 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */ 393 #endif 394 /* RFC2292 options */ 395 #ifdef _KERNEL 396 #define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */ 397 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */ 398 #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */ 399 #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */ 400 #define IPV6_2292DSTOPTS 23 /* bool; destination option */ 401 #define IPV6_2292RTHDR 24 /* bool; routing header */ 402 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */ 403 #endif 404 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */ 405 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */ 406 407 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */ 408 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */ 409 410 /* new socket options introduced in RFC3542 */ 411 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */ 412 413 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */ 414 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */ 415 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */ 416 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */ 417 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */ 418 #ifdef _KERNEL 419 #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */ 420 #endif 421 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */ 422 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */ 423 #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt), 424 4 bytes int; MTU notification (cmsg) */ 425 426 /* more new socket options introduced in RFC3542 */ 427 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */ 428 #define IPV6_HOPLIMIT 47 /* int; send hop limit */ 429 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */ 430 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */ 431 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */ 432 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */ 433 434 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */ 435 #ifdef _KERNEL 436 #define IPV6_OTCLASS 58 /* u_int8_t; send traffic class value */ 437 #endif 438 439 #define IPV6_TCLASS 61 /* int; send traffic class value */ 440 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */ 441 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 442 443 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */ 444 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */ 445 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ 446 447 /* 448 * Defaults and limits for options 449 */ 450 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */ 451 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 452 453 /* 454 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP. 455 */ 456 struct ipv6_mreq { 457 struct in6_addr ipv6mr_multiaddr; 458 unsigned int ipv6mr_interface; 459 }; 460 461 /* 462 * IPV6_PKTINFO: Packet information(RFC2292 sec 5) 463 */ 464 struct in6_pktinfo { 465 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 466 unsigned int ipi6_ifindex; /* send/recv interface index */ 467 }; 468 469 /* 470 * Control structure for IPV6_RECVPATHMTU socket option. 471 */ 472 struct ip6_mtuinfo { 473 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */ 474 uint32_t ip6m_mtu; 475 }; 476 477 /* 478 * Argument for IPV6_PORTRANGE: 479 * - which range to search when port is unspecified at bind() or connect() 480 */ 481 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */ 482 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 483 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 484 485 #if defined(_NETBSD_SOURCE) 486 /* 487 * Definitions for inet6 sysctl operations. 488 * 489 * Third level is protocol number. 490 * Fourth level is desired variable within that protocol. 491 */ 492 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */ 493 494 #define CTL_IPV6PROTO_NAMES { \ 495 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 496 { 0, 0 }, \ 497 { "tcp6", CTLTYPE_NODE }, \ 498 { 0, 0 }, \ 499 { 0, 0 }, \ 500 { 0, 0 }, \ 501 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 502 { 0, 0 }, \ 503 { 0, 0 }, \ 504 { "udp6", CTLTYPE_NODE }, \ 505 { 0, 0 }, \ 506 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 510 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 511 { 0, 0 }, \ 512 { "ip6", CTLTYPE_NODE }, \ 513 { 0, 0 }, \ 514 { 0, 0 }, \ 515 { 0, 0 }, \ 516 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 517 { 0, 0 }, \ 518 { "ipsec6", CTLTYPE_NODE }, \ 519 { 0, 0 }, \ 520 { 0, 0 }, \ 521 { 0, 0 }, \ 522 { 0, 0 }, \ 523 { 0, 0 }, \ 524 { 0, 0 }, \ 525 { "icmp6", CTLTYPE_NODE }, \ 526 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 534 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 535 { 0, 0 }, \ 536 { 0, 0 }, \ 537 { 0, 0 }, \ 538 { "pim6", CTLTYPE_NODE }, \ 539 } 540 541 /* 542 * Names for IP sysctl objects 543 */ 544 #define IPV6CTL_FORWARDING 1 /* act as router */ 545 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/ 546 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */ 547 #ifdef notyet 548 #define IPV6CTL_DEFMTU 4 /* default MTU */ 549 #endif 550 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */ 551 #define IPV6CTL_STATS 6 /* stats */ 552 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */ 553 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */ 554 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */ 555 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */ 556 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */ 557 #define IPV6CTL_ACCEPT_RTADV 12 558 #define IPV6CTL_KEEPFAITH 13 559 #define IPV6CTL_LOG_INTERVAL 14 560 #define IPV6CTL_HDRNESTLIMIT 15 561 #define IPV6CTL_DAD_COUNT 16 562 #define IPV6CTL_AUTO_FLOWLABEL 17 563 #define IPV6CTL_DEFMCASTHLIM 18 564 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */ 565 #define IPV6CTL_KAME_VERSION 20 566 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */ 567 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */ 568 /* 23: reserved */ 569 #define IPV6CTL_V6ONLY 24 570 /* 25 to 27: reserved */ 571 #define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */ 572 #define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */ 573 #define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */ 574 #define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */ 575 /* 32 to 34: reserved */ 576 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */ 577 /* 36 to 38: reserved */ 578 #define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */ 579 /* 40: reserved */ 580 #define IPV6CTL_MAXFRAGS 41 /* max fragments */ 581 #define IPV6CTL_IFQ 42 /* IPv6 packet input queue */ 582 #define IPV6CTL_RTADV_MAXROUTES 43 /* maximum number of routes */ 583 /* via router advertisement */ 584 #define IPV6CTL_RTADV_NUMROUTES 44 /* current number of routes */ 585 /* via router advertisement */ 586 /* New entries should be added here from current IPV6CTL_MAXID value. */ 587 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 588 #define IPV6CTL_MAXID 45 589 590 #define IPV6CTL_NAMES { \ 591 { 0, 0 }, \ 592 { "forwarding", CTLTYPE_INT }, \ 593 { "redirect", CTLTYPE_INT }, \ 594 { "hlim", CTLTYPE_INT }, \ 595 { "mtu", CTLTYPE_INT }, \ 596 { "forwsrcrt", CTLTYPE_INT }, \ 597 { "stats", CTLTYPE_STRUCT }, \ 598 { 0, 0 }, \ 599 { "mrtproto", CTLTYPE_INT }, \ 600 { "maxfragpackets", CTLTYPE_INT }, \ 601 { "sourcecheck", CTLTYPE_INT }, \ 602 { "sourcecheck_logint", CTLTYPE_INT }, \ 603 { "accept_rtadv", CTLTYPE_INT }, \ 604 { "keepfaith", CTLTYPE_INT }, \ 605 { "log_interval", CTLTYPE_INT }, \ 606 { "hdrnestlimit", CTLTYPE_INT }, \ 607 { "dad_count", CTLTYPE_INT }, \ 608 { "auto_flowlabel", CTLTYPE_INT }, \ 609 { "defmcasthlim", CTLTYPE_INT }, \ 610 { "gifhlim", CTLTYPE_INT }, \ 611 { "kame_version", CTLTYPE_STRING }, \ 612 { "use_deprecated", CTLTYPE_INT }, \ 613 { "rr_prune", CTLTYPE_INT }, \ 614 { 0, 0 }, \ 615 { "v6only", CTLTYPE_INT }, \ 616 { 0, 0 }, \ 617 { 0, 0 }, \ 618 { 0, 0 }, \ 619 { "anonportmin", CTLTYPE_INT }, \ 620 { "anonportmax", CTLTYPE_INT }, \ 621 { "lowportmin", CTLTYPE_INT }, \ 622 { "lowportmax", CTLTYPE_INT }, \ 623 { 0, 0 }, \ 624 { 0, 0 }, \ 625 { 0, 0 }, \ 626 { 0, 0 }, \ 627 { 0, 0 }, \ 628 { 0, 0 }, \ 629 { 0, 0 }, \ 630 { 0, 0 }, \ 631 { 0, 0 }, \ 632 { "maxfrags", CTLTYPE_INT }, \ 633 { "ifq", CTLTYPE_NODE }, \ 634 { "rtadv_maxroutes", CTLTYPE_INT }, \ 635 { "rtadv_numroutes", CTLTYPE_INT }, \ 636 } 637 638 #endif /* _NETBSD_SOURCE */ 639 640 #ifdef _KERNEL 641 struct cmsghdr; 642 643 /* 644 * in6_cksum_phdr: 645 * 646 * Compute significant parts of the IPv6 checksum pseudo-header 647 * for use in a delayed TCP/UDP checksum calculation. 648 * 649 * Args: 650 * 651 * src Source IPv6 address 652 * dst Destination IPv6 address 653 * len htonl(proto-hdr-len) 654 * nxt htonl(next-proto-number) 655 * 656 * NOTE: We expect the src and dst addresses to be 16-bit 657 * aligned! 658 */ 659 static __inline u_int16_t __unused 660 in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst, 661 u_int32_t len, u_int32_t nxt) 662 { 663 u_int32_t sum = 0; 664 const u_int16_t *w; 665 666 /*LINTED*/ 667 w = (const u_int16_t *) src; 668 sum += w[0]; 669 if (!IN6_IS_SCOPE_LINKLOCAL(src)) 670 sum += w[1]; 671 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 672 sum += w[6]; sum += w[7]; 673 674 /*LINTED*/ 675 w = (const u_int16_t *) dst; 676 sum += w[0]; 677 if (!IN6_IS_SCOPE_LINKLOCAL(dst)) 678 sum += w[1]; 679 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; 680 sum += w[6]; sum += w[7]; 681 682 sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/); 683 684 sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/); 685 686 sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/); 687 688 if (sum > 0xffff) 689 sum -= 0xffff; 690 691 return (sum); 692 } 693 694 struct mbuf; 695 struct ifnet; 696 int sockaddr_in6_cmp(const struct sockaddr *, const struct sockaddr *); 697 struct sockaddr *sockaddr_in6_externalize(struct sockaddr *, socklen_t, 698 const struct sockaddr *); 699 int in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t); 700 void in6_delayed_cksum(struct mbuf *); 701 int in6_localaddr(const struct in6_addr *); 702 int in6_addrscope(const struct in6_addr *); 703 struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *); 704 extern void in6_if_link_up(struct ifnet *); 705 extern void in6_if_link_down(struct ifnet *); 706 extern void in6_if_up(struct ifnet *); 707 extern void in6_if_down(struct ifnet *); 708 #ifndef __FreeBSD__ 709 extern int in6_src_sysctl(void *, size_t *, void *, size_t); 710 #endif 711 extern void addrsel_policy_init(void); 712 extern u_char ip6_protox[]; 713 714 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 715 #define satocsin6(sa) ((const struct sockaddr_in6 *)(sa)) 716 #define sin6tosa(sin6) ((struct sockaddr *)(sin6)) 717 #define sin6tocsa(sin6) ((const struct sockaddr *)(sin6)) 718 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 719 720 static inline void 721 sockaddr_in6_init1(struct sockaddr_in6 *sin6, const struct in6_addr *addr, 722 in_port_t port, uint32_t flowinfo, uint32_t scope_id) 723 { 724 sin6->sin6_port = port; 725 sin6->sin6_flowinfo = flowinfo; 726 sin6->sin6_addr = *addr; 727 sin6->sin6_scope_id = scope_id; 728 } 729 730 static inline void 731 sockaddr_in6_init(struct sockaddr_in6 *sin6, const struct in6_addr *addr, 732 in_port_t port, uint32_t flowinfo, uint32_t scope_id) 733 { 734 sin6->sin6_family = AF_INET6; 735 sin6->sin6_len = sizeof(*sin6); 736 sockaddr_in6_init1(sin6, addr, port, flowinfo, scope_id); 737 } 738 739 static inline struct sockaddr * 740 sockaddr_in6_alloc(const struct in6_addr *addr, in_port_t port, 741 uint32_t flowinfo, uint32_t scope_id, int flags) 742 { 743 struct sockaddr *sa; 744 745 if ((sa = sockaddr_alloc(AF_INET6, sizeof(struct sockaddr_in6), 746 flags)) == NULL) 747 return NULL; 748 749 sockaddr_in6_init1(satosin6(sa), addr, port, flowinfo, scope_id); 750 751 return sa; 752 } 753 #endif /* _KERNEL */ 754 755 #if defined(_NETBSD_SOURCE) 756 757 #include <machine/ansi.h> 758 759 #ifdef _BSD_SIZE_T_ 760 typedef _BSD_SIZE_T_ size_t; 761 #define _SIZE_T 762 #undef _BSD_SIZE_T_ 763 #endif 764 765 #include <sys/cdefs.h> 766 767 __BEGIN_DECLS 768 struct cmsghdr; 769 770 void in6_sin6_2_sin(struct sockaddr_in *, struct sockaddr_in6 *); 771 void in6_sin_2_v4mapsin6(struct sockaddr_in *, struct sockaddr_in6 *); 772 void in6_sin6_2_sin_in_sock(struct sockaddr *); 773 void in6_sin_2_v4mapsin6_in_sock(struct sockaddr **); 774 775 #define INET6_IS_ADDR_LINKLOCAL 1 776 #define INET6_IS_ADDR_MC_LINKLOCAL 2 777 #define INET6_IS_ADDR_SITELOCAL 4 778 void inet6_getscopeid(struct sockaddr_in6 *, int); 779 void inet6_putscopeid(struct sockaddr_in6 *, int); 780 781 extern int inet6_option_space(int); 782 extern int inet6_option_init(void *, struct cmsghdr **, int); 783 extern int inet6_option_append(struct cmsghdr *, const uint8_t *, 784 int, int); 785 extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int); 786 extern int inet6_option_next(const struct cmsghdr *, uint8_t **); 787 extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int); 788 789 extern size_t inet6_rthdr_space(int, int); 790 extern struct cmsghdr *inet6_rthdr_init(void *, int); 791 extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *, 792 unsigned int); 793 extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int); 794 #if 0 /* not implemented yet */ 795 extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *); 796 #endif 797 extern int inet6_rthdr_segments(const struct cmsghdr *); 798 extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int); 799 extern int inet6_rthdr_getflags(const struct cmsghdr *, int); 800 801 extern int inet6_opt_init(void *, socklen_t); 802 extern int inet6_opt_append(void *, socklen_t, int, uint8_t, 803 socklen_t, uint8_t, void **); 804 extern int inet6_opt_finish(void *, socklen_t, int); 805 extern int inet6_opt_set_val(void *, int, void *, socklen_t); 806 807 extern int inet6_opt_next(void *, socklen_t, int, uint8_t *, 808 socklen_t *, void **); 809 extern int inet6_opt_find(void *, socklen_t, int, uint8_t, 810 socklen_t *, void **); 811 extern int inet6_opt_get_val(void *, int, void *, socklen_t); 812 extern socklen_t inet6_rth_space(int, int); 813 extern void *inet6_rth_init(void *, socklen_t, int, int); 814 extern int inet6_rth_add(void *, const struct in6_addr *); 815 extern int inet6_rth_reverse(const void *, void *); 816 extern int inet6_rth_segments(const void *); 817 extern struct in6_addr *inet6_rth_getaddr(const void *, int); 818 __END_DECLS 819 #endif /* _NETBSD_SOURCE */ 820 821 #if defined(_KERNEL) || defined(_TEST) 822 int in6_print(char *, size_t, const struct in6_addr *); 823 int sin6_print(char *, size_t, const void *); 824 #endif 825 826 #endif /* !_NETINET6_IN6_H_ */ 827
Indexes created Fri Sep 26 20:09:58 GMT 2025