bsd/netinet6/in6.h

   1 /*      $FreeBSD: src/sys/netinet6/in6.h,v 1.7.2.4 2001/07/04 09:45:23 ume Exp $        */
   2 /*      $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun 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. All advertising materials mentioning features or use of this software
  46  *    must display the following acknowledgement:
  47  *      This product includes software developed by the University of
  48  *      California, Berkeley and its contributors.
  49  * 4. Neither the name of the University nor the names of its contributors
  50  *    may be used to endorse or promote products derived from this software
  51  *    without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  56  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  58  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  59  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  60  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  61  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  63  * SUCH DAMAGE.
  64  *
  65  *      @(#)in.h        8.3 (Berkeley) 1/3/94
  66  */
  67
  68 #ifndef __KAME_NETINET_IN_H_INCLUDED_
  69 #error "do not include netinet6/in6.h directly, include netinet/in.h.  see RFC2553"
  70 #endif
  71
  72 #ifndef _NETINET6_IN6_H_
  73 #define _NETINET6_IN6_H_
  74 #include <sys/appleapiopts.h>
  75 #include <sys/_types.h>
  76
  77
  78 #ifndef _SA_FAMILY_T
  79 #define _SA_FAMILY_T
  80 typedef __uint8_t               sa_family_t;
  81 #endif
  82
  83 /*
  84  * Identification of the network protocol stack
  85  * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
  86  * has the table of implementation/integration differences.
  87  */
  88 #define __KAME__
  89 #define __KAME_VERSION          "20010528/apple-darwin"
  90
  91 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
  92 /*
  93  * Local port number conventions:
  94  *
  95  * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
  96  * unless a kernel is compiled with IPNOPRIVPORTS defined.
  97  *
  98  * When a user does a bind(2) or connect(2) with a port number of zero,
  99  * a non-conflicting local port address is chosen.
 100  *
 101  * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
 102  * that is settable by sysctl(3); net.inet.ip.anonportmin and
 103  * net.inet.ip.anonportmax respectively.
 104  *
 105  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 106  * default assignment range.
 107  *
 108  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 109  *
 110  * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
 111  * and exists only for FreeBSD compatibility purposes.
 112  *
 113  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 114  * that is (by convention) restricted to privileged processes.
 115  * This convention is based on "vouchsafe" principles only.
 116  * It is only secure if you trust the remote host to restrict these ports.
 117  * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
 118  */
 119
 120 #define IPV6PORT_RESERVED       1024
 121 #define IPV6PORT_ANONMIN        49152
 122 #define IPV6PORT_ANONMAX        65535
 123 #define IPV6PORT_RESERVEDMIN    600
 124 #define IPV6PORT_RESERVEDMAX    (IPV6PORT_RESERVED-1)
 125 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 126
 127 /*
 128  * IPv6 address
 129  */
 130 struct in6_addr {
 131         union {
 132                 __uint8_t   __u6_addr8[16];
 133                 __uint16_t  __u6_addr16[8];
 134                 __uint32_t  __u6_addr32[4];
 135         } __u6_addr;                    /* 128-bit IP6 address */
 136 };
 137
 138 #define s6_addr   __u6_addr.__u6_addr8
 139 #ifdef KERNEL   /*XXX nonstandard*/
 140 #define s6_addr8  __u6_addr.__u6_addr8
 141 #define s6_addr16 __u6_addr.__u6_addr16
 142 #define s6_addr32 __u6_addr.__u6_addr32
 143 #endif
 144
 145 #define INET6_ADDRSTRLEN        46
 146
 147 /*
 148  * Socket address for IPv6
 149  */
 150 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 151 #define SIN6_LEN
 152 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 153 struct sockaddr_in6 {
 154         __uint8_t       sin6_len;       /* length of this struct(sa_family_t)*/
 155         sa_family_t     sin6_family;    /* AF_INET6 (sa_family_t) */
 156         in_port_t       sin6_port;      /* Transport layer port # (in_port_t)*/
 157         __uint32_t      sin6_flowinfo;  /* IP6 flow information */
 158         struct in6_addr sin6_addr;      /* IP6 address */
 159         __uint32_t      sin6_scope_id;  /* scope zone index */
 160 };
 161
 162 /*
 163  * Local definition for masks
 164  */
 165 #ifdef KERNEL   /*XXX nonstandard*/
 166 #define IN6MASK0        {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
 167 #define IN6MASK32       {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
 168                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 169 #define IN6MASK64       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 170                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 171 #define IN6MASK96       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 172                             0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 173 #define IN6MASK128      {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 174                             0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
 175 #endif
 176
 177 #ifdef KERNEL_PRIVATE
 178 extern const struct sockaddr_in6 sa6_any;
 179
 180 extern const struct in6_addr in6mask0;
 181 extern const struct in6_addr in6mask32;
 182 extern const struct in6_addr in6mask64;
 183 extern const struct in6_addr in6mask96;
 184 extern const struct in6_addr in6mask128;
 185 #endif /* KERNEL_PRIVATE */
 186
 187
 188 /*
 189  * Macros started with IPV6_ADDR is KAME local
 190  */
 191 #ifdef KERNEL   /*XXX nonstandard*/
 192 #if BYTE_ORDER == BIG_ENDIAN
 193 #define IPV6_ADDR_INT32_ONE     1
 194 #define IPV6_ADDR_INT32_TWO     2
 195 #define IPV6_ADDR_INT32_MNL     0xff010000
 196 #define IPV6_ADDR_INT32_MLL     0xff020000
 197 #define IPV6_ADDR_INT32_SMP     0x0000ffff
 198 #define IPV6_ADDR_INT16_ULL     0xfe80
 199 #define IPV6_ADDR_INT16_USL     0xfec0
 200 #define IPV6_ADDR_INT16_MLL     0xff02
 201 #elif BYTE_ORDER == LITTLE_ENDIAN
 202 #define IPV6_ADDR_INT32_ONE     0x01000000
 203 #define IPV6_ADDR_INT32_TWO     0x02000000
 204 #define IPV6_ADDR_INT32_MNL     0x000001ff
 205 #define IPV6_ADDR_INT32_MLL     0x000002ff
 206 #define IPV6_ADDR_INT32_SMP     0xffff0000
 207 #define IPV6_ADDR_INT16_ULL     0x80fe
 208 #define IPV6_ADDR_INT16_USL     0xc0fe
 209 #define IPV6_ADDR_INT16_MLL     0x02ff
 210 #endif
 211 #endif
 212
 213 /*
 214  * Definition of some useful macros to handle IP6 addresses
 215  */
 216 #define IN6ADDR_ANY_INIT \
 217         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 218             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 219 #define IN6ADDR_LOOPBACK_INIT \
 220         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 221             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 222 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 223 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
 224         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 225             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 226 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
 227         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 228             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 229 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
 230         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 231             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
 232 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 233
 234 extern const struct in6_addr in6addr_any;
 235 extern const struct in6_addr in6addr_loopback;
 236 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 237 extern const struct in6_addr in6addr_nodelocal_allnodes;
 238 extern const struct in6_addr in6addr_linklocal_allnodes;
 239 extern const struct in6_addr in6addr_linklocal_allrouters;
 240 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 241
 242 /*
 243  * Equality
 244  * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
 245  * does not supply memcmp().  For userland memcmp() is preferred as it is
 246  * in ANSI standard.
 247  */
 248 #ifdef KERNEL
 249 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
 250     (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 251 #else
 252 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 253 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
 254     (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 255 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 256 #endif
 257
 258 #ifdef KERNEL                   /* non standard */
 259 /* see if two addresses are equal in a scope-conscious manner. */
 260 #define SA6_ARE_ADDR_EQUAL(a, b) \
 261         (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
 262           ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
 263          (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
 264 #endif
 265
 266 /*
 267  * Unspecified
 268  */
 269 #define IN6_IS_ADDR_UNSPECIFIED(a)      \
 270         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 271          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 272          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
 273          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
 274
 275 /*
 276  * Loopback
 277  */
 278 #define IN6_IS_ADDR_LOOPBACK(a)         \
 279         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 280          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 281          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
 282          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
 283
 284 /*
 285  * IPv4 compatible
 286  */
 287 #define IN6_IS_ADDR_V4COMPAT(a)         \
 288         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 289          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 290          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
 291          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
 292          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
 293
 294 /*
 295  * Mapped
 296  */
 297 #define IN6_IS_ADDR_V4MAPPED(a)               \
 298         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 299          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 300          (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
 301
 302 /*
 303  * KAME Scope Values
 304  */
 305
 306 #ifdef KERNEL   /*XXX nonstandard*/
 307 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
 308 #define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
 309 #define IPV6_ADDR_SCOPE_SITELOCAL       0x05
 310 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08    /* just used in this file */
 311 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
 312 #else
 313 #define __IPV6_ADDR_SCOPE_NODELOCAL     0x01
 314 #define __IPV6_ADDR_SCOPE_LINKLOCAL     0x02
 315 #define __IPV6_ADDR_SCOPE_SITELOCAL     0x05
 316 #define __IPV6_ADDR_SCOPE_ORGLOCAL      0x08    /* just used in this file */
 317 #define __IPV6_ADDR_SCOPE_GLOBAL        0x0e
 318 #endif
 319
 320 /*
 321  * Unicast Scope
 322  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 323  */
 324 #define IN6_IS_ADDR_LINKLOCAL(a)        \
 325         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
 326 #define IN6_IS_ADDR_SITELOCAL(a)        \
 327         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
 328
 329 /*
 330  * Multicast
 331  */
 332 #define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)
 333
 334 #ifdef KERNEL   /*XXX nonstandard*/
 335 #define IPV6_ADDR_MC_SCOPE(a)           ((a)->s6_addr[1] & 0x0f)
 336 #else
 337 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 338 #endif
 339
 340 /*
 341  * Multicast Scope
 342  */
 343 #ifdef KERNEL   /*refers nonstandard items */
 344 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 345         (IN6_IS_ADDR_MULTICAST(a) &&    \
 346          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
 347 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 348         (IN6_IS_ADDR_MULTICAST(a) &&    \
 349          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
 350 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 351         (IN6_IS_ADDR_MULTICAST(a) &&    \
 352          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
 353 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 354         (IN6_IS_ADDR_MULTICAST(a) &&    \
 355          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
 356 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 357         (IN6_IS_ADDR_MULTICAST(a) &&    \
 358          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
 359 #else
 360 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 361         (IN6_IS_ADDR_MULTICAST(a) &&    \
 362          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
 363 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 364         (IN6_IS_ADDR_MULTICAST(a) &&    \
 365          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
 366 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 367         (IN6_IS_ADDR_MULTICAST(a) &&    \
 368          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
 369 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 370         (IN6_IS_ADDR_MULTICAST(a) &&    \
 371          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
 372 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 373         (IN6_IS_ADDR_MULTICAST(a) &&    \
 374          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
 375 #endif
 376
 377 #ifdef KERNEL   /*nonstandard*/
 378 /*
 379  * KAME Scope
 380  */
 381 #define IN6_IS_SCOPE_LINKLOCAL(a)       \
 382         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 383          (IN6_IS_ADDR_MC_LINKLOCAL(a)))
 384
 385 #define IFA6_IS_DEPRECATED(a) \
 386         ((a)->ia6_lifetime.ia6t_preferred != 0 && \
 387          (a)->ia6_lifetime.ia6t_preferred < timenow.tv_sec)
 388 #define IFA6_IS_INVALID(a) \
 389         ((a)->ia6_lifetime.ia6t_expire != 0 && \
 390          (a)->ia6_lifetime.ia6t_expire < timenow.tv_sec)
 391 #endif /* KERNEL */
 392
 393 /*
 394  * IP6 route structure
 395  */
 396 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 397 #ifdef PRIVATE
 398 struct route_in6 {
 399         struct  rtentry *ro_rt;
 400         struct  sockaddr_in6 ro_dst;
 401 };
 402 #endif /* PRIVATE */
 403 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 404
 405 /*
 406  * Options for use with [gs]etsockopt at the IPV6 level.
 407  * First word of comment is data type; bool is stored in int.
 408  */
 409 /* no hdrincl */
 410 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 411 #if 0 /* the followings are relic in IPv4 and hence are disabled */
 412 #define IPV6_OPTIONS            1  /* buf/ip6_opts; set/get IP6 options */
 413 #define IPV6_RECVOPTS           5  /* bool; receive all IP6 opts w/dgram */
 414 #define IPV6_RECVRETOPTS        6  /* bool; receive IP6 opts for response */
 415 #define IPV6_RECVDSTADDR        7  /* bool; receive IP6 dst addr w/dgram */
 416 #define IPV6_RETOPTS            8  /* ip6_opts; set/get IP6 options */
 417 #endif /* 0 */
 418 #define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
 419 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 420 #define IPV6_UNICAST_HOPS       4  /* int; IP6 hops */
 421 #define IPV6_MULTICAST_IF       9  /* __uint8_t; set/get IP6 multicast i/f  */
 422 #define IPV6_MULTICAST_HOPS     10 /* __uint8_t; set/get IP6 multicast hops */
 423 #define IPV6_MULTICAST_LOOP     11 /* __uint8_t; set/get IP6 mcast loopback */
 424 #define IPV6_JOIN_GROUP         12 /* ip6_mreq; join a group membership */
 425 #define IPV6_LEAVE_GROUP        13 /* ip6_mreq; leave a group membership */
 426
 427 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 428 #define IPV6_PORTRANGE          14 /* int; range to choose for unspec port */
 429 #define ICMP6_FILTER            18 /* icmp6_filter; icmp6 filter */
 430 /* RFC2292 options */
 431 #define IPV6_PKTINFO            19 /* bool; send/recv if, src/dst addr */
 432 #define IPV6_HOPLIMIT           20 /* bool; hop limit */
 433 #define IPV6_NEXTHOP            21 /* bool; next hop addr */
 434 #define IPV6_HOPOPTS            22 /* bool; hop-by-hop option */
 435 #define IPV6_DSTOPTS            23 /* bool; destination option */
 436 #define IPV6_RTHDR              24 /* bool; routing header */
 437 #define IPV6_PKTOPTIONS         25 /* buf/cmsghdr; set/get IPv6 options */
 438
 439 #define IPV6_CHECKSUM           26 /* int; checksum offset for raw socket */
 440 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 441 #define IPV6_V6ONLY             27 /* bool; only bind INET6 at wildcard bind */
 442 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 443 #ifndef KERNEL
 444 #define IPV6_BINDV6ONLY         IPV6_V6ONLY
 445 #endif /* KERNEL */
 446
 447
 448 #if 1 /*IPSEC*/
 449 #define IPV6_IPSEC_POLICY       28 /* struct; get/set security policy */
 450 #endif /* 1 */
 451 #define IPV6_FAITH              29 /* bool; accept FAITH'ed connections */
 452
 453 #if 1 /*IPV6FIREWALL*/
 454 #define IPV6_FW_ADD             30 /* add a firewall rule to chain */
 455 #define IPV6_FW_DEL             31 /* delete a firewall rule from chain */
 456 #define IPV6_FW_FLUSH           32 /* flush firewall rule chain */
 457 #define IPV6_FW_ZERO            33 /* clear single/all firewall counter(s) */
 458 #define IPV6_FW_GET             34 /* get entire firewall rule chain */
 459 #endif /* 1 */
 460
 461 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 462
 463 #define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
 464 #define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
 465 #define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */
 466
 467 /*
 468  * Defaults and limits for options
 469  */
 470 #define IPV6_DEFAULT_MULTICAST_HOPS 1   /* normally limit m'casts to 1 hop  */
 471 #define IPV6_DEFAULT_MULTICAST_LOOP 1   /* normally hear sends if a member  */
 472
 473 /*
 474  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 475  */
 476 struct ipv6_mreq {
 477         struct in6_addr ipv6mr_multiaddr;
 478         unsigned int    ipv6mr_interface;
 479 };
 480
 481 /*
 482  * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
 483  */
 484 struct in6_pktinfo {
 485         struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
 486         unsigned int    ipi6_ifindex;   /* send/recv interface index */
 487 };
 488
 489 /*
 490  * Argument for IPV6_PORTRANGE:
 491  * - which range to search when port is unspecified at bind() or connect()
 492  */
 493 #define IPV6_PORTRANGE_DEFAULT  0       /* default range */
 494 #define IPV6_PORTRANGE_HIGH     1       /* "high" - request firewall bypass */
 495 #define IPV6_PORTRANGE_LOW      2       /* "low" - vouchsafe security */
 496
 497 /*
 498  * Definitions for inet6 sysctl operations.
 499  *
 500  * Third level is protocol number.
 501  * Fourth level is desired variable within that protocol.
 502  */
 503 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1)       /* don't list to IPV6PROTO_MAX */
 504
 505 /*
 506  * Names for IP sysctl objects
 507  */
 508 #define IPV6CTL_FORWARDING      1       /* act as router */
 509 #define IPV6CTL_SENDREDIRECTS   2       /* may send redirects when forwarding*/
 510 #define IPV6CTL_DEFHLIM         3       /* default Hop-Limit */
 511 #ifdef notyet
 512 #define IPV6CTL_DEFMTU          4       /* default MTU */
 513 #endif
 514 #define IPV6CTL_FORWSRCRT       5       /* forward source-routed dgrams */
 515 #define IPV6CTL_STATS           6       /* stats */
 516 #define IPV6CTL_MRTSTATS        7       /* multicast forwarding stats */
 517 #define IPV6CTL_MRTPROTO        8       /* multicast routing protocol */
 518 #define IPV6CTL_MAXFRAGPACKETS  9       /* max packets reassembly queue */
 519 #define IPV6CTL_SOURCECHECK     10      /* verify source route and intf */
 520 #define IPV6CTL_SOURCECHECK_LOGINT 11   /* minimume logging interval */
 521 #define IPV6CTL_ACCEPT_RTADV    12
 522 #define IPV6CTL_KEEPFAITH       13
 523 #define IPV6CTL_LOG_INTERVAL    14
 524 #define IPV6CTL_HDRNESTLIMIT    15
 525 #define IPV6CTL_DAD_COUNT       16
 526 #define IPV6CTL_AUTO_FLOWLABEL  17
 527 #define IPV6CTL_DEFMCASTHLIM    18
 528 #define IPV6CTL_GIF_HLIM        19      /* default HLIM for gif encap packet */
 529 #define IPV6CTL_KAME_VERSION    20
 530 #define IPV6CTL_USE_DEPRECATED  21      /* use deprecated addr (RFC2462 5.5.4) */
 531 #define IPV6CTL_RR_PRUNE        22      /* walk timer for router renumbering */
 532 #if 0   /*obsolete*/
 533 #define IPV6CTL_MAPPED_ADDR     23
 534 #endif
 535 #define IPV6CTL_V6ONLY          24
 536 #define IPV6CTL_RTEXPIRE        25      /* cloned route expiration time */
 537 #define IPV6CTL_RTMINEXPIRE     26      /* min value for expiration time */
 538 #define IPV6CTL_RTMAXCACHE      27      /* trigger level for dynamic expire */
 539
 540 #define IPV6CTL_USETEMPADDR     32      /* use temporary addresses (RFC3041) */
 541 #define IPV6CTL_TEMPPLTIME      33      /* preferred lifetime for tmpaddrs */
 542 #define IPV6CTL_TEMPVLTIME      34      /* valid lifetime for tmpaddrs */
 543 #define IPV6CTL_AUTO_LINKLOCAL  35      /* automatic link-local addr assign */
 544 #define IPV6CTL_RIP6STATS       36      /* raw_ip6 stats */
 545
 546 #define IPV6CTL_MAXFRAGS        41      /* max fragments */
 547
 548 /* New entries should be added here from current IPV6CTL_MAXID value. */
 549 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 550 #define IPV6CTL_MAXID           42
 551
 552 #ifdef KERNEL_PRIVATE
 553 #define CTL_IPV6PROTO_NAMES { \
 554         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 555         { 0, 0 }, \
 556         { "tcp6", CTLTYPE_NODE }, \
 557         { 0, 0 }, \
 558         { 0, 0 }, \
 559         { 0, 0 }, \
 560         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 561         { 0, 0 }, \
 562         { 0, 0 }, \
 563         { "udp6", CTLTYPE_NODE }, \
 564         { 0, 0 }, \
 565         { 0, 0 }, \
 566         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 567         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 568         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 569         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 570         { 0, 0 }, \
 571         { "ip6", CTLTYPE_NODE }, \
 572         { 0, 0 }, \
 573         { 0, 0 }, \
 574         { 0, 0 }, \
 575         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 576         { 0, 0 }, \
 577         { "ipsec6", CTLTYPE_NODE }, \
 578         { 0, 0 }, \
 579         { 0, 0 }, \
 580         { 0, 0 }, \
 581         { 0, 0 }, \
 582         { 0, 0 }, \
 583         { 0, 0 }, \
 584         { "icmp6", CTLTYPE_NODE }, \
 585         { 0, 0 }, \
 586         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 587         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 588         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 589         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 590         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 591         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 592         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 593         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 594         { 0, 0 }, \
 595         { 0, 0 }, \
 596         { 0, 0 }, \
 597         { "pim6", CTLTYPE_NODE }, \
 598 }
 599 /*
 600  * Redefinition of mbuf flags
 601  */
 602 #define M_AUTHIPHDR     M_PROTO2
 603 #define M_DECRYPTED     M_PROTO3
 604 #define M_LOOP          M_PROTO4
 605 #define M_AUTHIPDGM     M_PROTO5
 606
 607 struct cmsghdr;
 608 struct mbuf;
 609 struct ifnet;
 610 struct in6_aliasreq;
 611
 612 #define in6_cksum(m, n, o, l)   inet6_cksum(m, n, o, l)
 613
 614 extern u_int16_t inet6_cksum(struct mbuf *m, unsigned int proto,
 615     unsigned int offset, unsigned int transport_len);
 616
 617 extern int in6_localaddr(struct in6_addr *);
 618 extern int in6_addrscope(struct in6_addr *);
 619 extern struct in6_ifaddr *in6_ifawithscope(struct ifnet *, struct in6_addr *);
 620 extern struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
 621 extern void in6_if_up(struct ifnet *, struct in6_aliasreq *);
 622 struct sockaddr;
 623
 624 extern void in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6);
 625 extern void in6_sin_2_v4mapsin6(struct sockaddr_in *sin,
 626     struct sockaddr_in6 *sin6);
 627 extern void in6_sin6_2_sin_in_sock(struct sockaddr *nam);
 628 extern void in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam);
 629
 630 #define satosin6(sa)    ((struct sockaddr_in6 *)(sa))
 631 #define sin6tosa(sin6)  ((struct sockaddr *)(sin6))
 632 #define ifatoia6(ifa)   ((struct in6_ifaddr *)(ifa))
 633
 634 extern int in6addr_local(struct in6_addr *);
 635 #endif /* KERNEL_PRIVATE */
 636
 637 #ifndef KERNEL
 638 __BEGIN_DECLS
 639 struct cmsghdr;
 640
 641 extern int inet6_option_space(int);
 642 extern int inet6_option_init(void *, struct cmsghdr **, int);
 643 extern int inet6_option_append(struct cmsghdr *, const __uint8_t *,
 644         int, int);
 645 extern __uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
 646 extern int inet6_option_next(const struct cmsghdr *, __uint8_t **);
 647 extern int inet6_option_find(const struct cmsghdr *, __uint8_t **, int);
 648
 649 extern size_t inet6_rthdr_space(int, int);
 650 extern struct cmsghdr *inet6_rthdr_init(void *, int);
 651 extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
 652                 unsigned int);
 653 extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
 654 #if 0 /* not implemented yet */
 655 extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
 656 #endif
 657 extern int inet6_rthdr_segments(const struct cmsghdr *);
 658 extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
 659 extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
 660
 661 extern int inet6_opt_init(void *, size_t);
 662 extern int inet6_opt_append(void *, size_t, int, __uint8_t,
 663                                  size_t, __uint8_t, void **);
 664 extern int inet6_opt_finish(void *, size_t, int);
 665 extern int inet6_opt_set_val(void *, size_t, void *, int);
 666
 667 extern int inet6_opt_next(void *, size_t, int, __uint8_t *,
 668                                size_t *, void **);
 669 extern int inet6_opt_find(void *, size_t, int, __uint8_t,
 670                           size_t *, void **);
 671 extern int inet6_opt_get_val(void *, size_t, void *, int);
 672 extern size_t inet6_rth_space(int, int);
 673 extern void *inet6_rth_init(void *, int, int, int);
 674 extern int inet6_rth_add(void *, const struct in6_addr *);
 675 extern int inet6_rth_reverse(const void *, void *);
 676 extern int inet6_rth_segments(const void *);
 677 extern struct in6_addr *inet6_rth_getaddr(const void *, int);
 678 __END_DECLS
 679 #endif /* !KERNEL */
 680 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 681 #endif /* !_NETINET6_IN6_H_ */