bsd/netinet6/in6.h

   1 /*
   2  * Copyright (c) 2008-2015 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 /*
  30  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  31  * All rights reserved.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. Neither the name of the project nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  */
  57
  58 /*
  59  * Copyright (c) 1982, 1986, 1990, 1993
  60  *      The Regents of the University of California.  All rights reserved.
  61  *
  62  * Redistribution and use in source and binary forms, with or without
  63  * modification, are permitted provided that the following conditions
  64  * are met:
  65  * 1. Redistributions of source code must retain the above copyright
  66  *    notice, this list of conditions and the following disclaimer.
  67  * 2. Redistributions in binary form must reproduce the above copyright
  68  *    notice, this list of conditions and the following disclaimer in the
  69  *    documentation and/or other materials provided with the distribution.
  70  * 3. All advertising materials mentioning features or use of this software
  71  *    must display the following acknowledgement:
  72  *      This product includes software developed by the University of
  73  *      California, Berkeley and its contributors.
  74  * 4. Neither the name of the University nor the names of its contributors
  75  *    may be used to endorse or promote products derived from this software
  76  *    without specific prior written permission.
  77  *
  78  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  79  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  80  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  81  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  82  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  83  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  84  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  85  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  86  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  87  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  88  * SUCH DAMAGE.
  89  *
  90  *      @(#)in.h        8.3 (Berkeley) 1/3/94
  91  */
  92
  93 #ifndef __KAME_NETINET_IN_H_INCLUDED_
  94 #error "do not include netinet6/in6.h directly, include netinet/in.h. " \
  95         " see RFC2553"
  96 #endif
  97
  98 #ifndef _NETINET6_IN6_H_
  99 #define _NETINET6_IN6_H_
 100 #include <sys/appleapiopts.h>
 101 #include <sys/_types.h>
 102
 103 #include <sys/_types/_sa_family_t.h>
 104
 105 /*
 106  * Identification of the network protocol stack
 107  * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
 108  * has the table of implementation/integration differences.
 109  */
 110 #define __KAME__
 111 #define __KAME_VERSION          "2009/apple-darwin"
 112
 113 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 114 /*
 115  * Local port number conventions:
 116  *
 117  * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
 118  * unless a kernel is compiled with IPNOPRIVPORTS defined.
 119  *
 120  * When a user does a bind(2) or connect(2) with a port number of zero,
 121  * a non-conflicting local port address is chosen.
 122  *
 123  * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
 124  * that is settable by sysctl(3); net.inet.ip.anonportmin and
 125  * net.inet.ip.anonportmax respectively.
 126  *
 127  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 128  * default assignment range.
 129  *
 130  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 131  *
 132  * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
 133  * and exists only for FreeBSD compatibility purposes.
 134  *
 135  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 136  * that is (by convention) restricted to privileged processes.
 137  * This convention is based on "vouchsafe" principles only.
 138  * It is only secure if you trust the remote host to restrict these ports.
 139  * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
 140  */
 141
 142 #define IPV6PORT_RESERVED       1024
 143 #define IPV6PORT_ANONMIN        49152
 144 #define IPV6PORT_ANONMAX        65535
 145 #define IPV6PORT_RESERVEDMIN    600
 146 #define IPV6PORT_RESERVEDMAX    (IPV6PORT_RESERVED-1)
 147 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 148
 149 /*
 150  * IPv6 address
 151  */
 152 struct in6_addr {
 153         union {
 154                 __uint8_t   __u6_addr8[16];
 155                 __uint16_t  __u6_addr16[8];
 156                 __uint32_t  __u6_addr32[4];
 157         } __u6_addr;                    /* 128-bit IP6 address */
 158 };
 159
 160 #define s6_addr   __u6_addr.__u6_addr8
 161 #ifdef KERNEL   /* XXX nonstandard */
 162 #define s6_addr8  __u6_addr.__u6_addr8
 163 #define s6_addr16 __u6_addr.__u6_addr16
 164 #define s6_addr32 __u6_addr.__u6_addr32
 165 #endif
 166
 167 #define INET6_ADDRSTRLEN        46
 168
 169 /*
 170  * Socket address for IPv6
 171  */
 172 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 173 #define SIN6_LEN
 174 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 175 struct sockaddr_in6 {
 176         __uint8_t       sin6_len;       /* length of this struct(sa_family_t) */
 177         sa_family_t     sin6_family;    /* AF_INET6 (sa_family_t) */
 178         in_port_t       sin6_port;      /* Transport layer port # (in_port_t) */
 179         __uint32_t      sin6_flowinfo;  /* IP6 flow information */
 180         struct in6_addr sin6_addr;      /* IP6 address */
 181         __uint32_t      sin6_scope_id;  /* scope zone index */
 182 };
 183
 184 #ifdef KERNEL   /* XXX nonstandard */
 185 /*
 186  * Local definition for masks
 187  */
 188 #define IN6MASK0        {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
 189 #define IN6MASK7        {{{ 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 190                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 191 #define IN6MASK16       {{{ 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 192                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 193 #define IN6MASK32       {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
 194                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 195 #define IN6MASK64       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 196                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 197 #define IN6MASK96       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 198                             0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 199 #define IN6MASK128      {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 200                             0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
 201 #endif
 202
 203 #ifdef KERNEL_PRIVATE
 204 extern const struct sockaddr_in6 sa6_any;
 205
 206 extern const struct in6_addr in6mask0;
 207 extern const struct in6_addr in6mask7;
 208 extern const struct in6_addr in6mask16;
 209 extern const struct in6_addr in6mask32;
 210 extern const struct in6_addr in6mask64;
 211 extern const struct in6_addr in6mask96;
 212 extern const struct in6_addr in6mask128;
 213
 214 #define SIN6(s)         ((struct sockaddr_in6 *)(void *)s)
 215 #define satosin6(sa)    SIN6(sa)
 216 #define sin6tosa(sin6)  ((struct sockaddr *)(void *)(sin6))
 217 #define SIN6IFSCOPE(s)  SIN6(s)
 218 #endif /* KERNEL_PRIVATE */
 219
 220 #ifdef KERNEL   /* XXX nonstandard */
 221 /*
 222  * Macros started with IPV6_ADDR is KAME local
 223  */
 224 #if BYTE_ORDER == BIG_ENDIAN
 225 #define IPV6_ADDR_INT32_ONE     1
 226 #define IPV6_ADDR_INT32_TWO     2
 227 #define IPV6_ADDR_INT32_MNL     0xff010000
 228 #define IPV6_ADDR_INT32_MLL     0xff020000
 229 #define IPV6_ADDR_INT32_SMP     0x0000ffff
 230 #define IPV6_ADDR_INT16_ULL     0xfe80
 231 #define IPV6_ADDR_INT16_USL     0xfec0
 232 #define IPV6_ADDR_INT16_MLL     0xff02
 233 #elif BYTE_ORDER == LITTLE_ENDIAN
 234 #define IPV6_ADDR_INT32_ONE     0x01000000
 235 #define IPV6_ADDR_INT32_TWO     0x02000000
 236 #define IPV6_ADDR_INT32_MNL     0x000001ff
 237 #define IPV6_ADDR_INT32_MLL     0x000002ff
 238 #define IPV6_ADDR_INT32_SMP     0xffff0000
 239 #define IPV6_ADDR_INT16_ULL     0x80fe
 240 #define IPV6_ADDR_INT16_USL     0xc0fe
 241 #define IPV6_ADDR_INT16_MLL     0x02ff
 242 #endif
 243 #endif
 244
 245 /*
 246  * Definition of some useful macros to handle IP6 addresses
 247  */
 248 #define IN6ADDR_ANY_INIT \
 249         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 250             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 251 #define IN6ADDR_LOOPBACK_INIT \
 252         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 253             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 254 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 255 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
 256         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 257             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 258 #define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
 259         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 260             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 261 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
 262         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 263             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 264 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
 265         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 266             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
 267 #define IN6ADDR_LINKLOCAL_ALLV2ROUTERS_INIT \
 268         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 269             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16 }}}
 270 #define IN6ADDR_V4MAPPED_INIT \
 271         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 272             0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 273 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 274
 275 extern const struct in6_addr in6addr_any;
 276 extern const struct in6_addr in6addr_loopback;
 277 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 278 extern const struct in6_addr in6addr_nodelocal_allnodes;
 279 extern const struct in6_addr in6addr_linklocal_allnodes;
 280 extern const struct in6_addr in6addr_linklocal_allrouters;
 281 extern const struct in6_addr in6addr_linklocal_allv2routers;
 282 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 283
 284 /*
 285  * Equality
 286  * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
 287  * does not supply memcmp().  For userland memcmp() is preferred as it is
 288  * in ANSI standard.
 289  */
 290 #ifdef KERNEL
 291 #define IN6_ARE_ADDR_EQUAL(a, b) \
 292         (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], \
 293         sizeof (struct in6_addr)) == 0)
 294 #else
 295 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 296 #define IN6_ARE_ADDR_EQUAL(a, b) \
 297         (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof (struct in6_addr)) \
 298         == 0)
 299 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 300 #endif
 301
 302 #ifdef KERNEL                   /* non standard */
 303 /* see if two addresses are equal in a scope-conscious manner. */
 304 #define SA6_ARE_ADDR_EQUAL(a, b) \
 305         (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
 306         ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
 307         (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof (struct in6_addr)) == 0))
 308 #endif
 309
 310 /*
 311  * Unspecified
 312  */
 313 #define IN6_IS_ADDR_UNSPECIFIED(a)      \
 314         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 315         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 316         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
 317         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
 318
 319 /*
 320  * Loopback
 321  */
 322 #define IN6_IS_ADDR_LOOPBACK(a)         \
 323         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 324         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 325         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
 326         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
 327
 328 /*
 329  * IPv4 compatible
 330  */
 331 #define IN6_IS_ADDR_V4COMPAT(a)         \
 332         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 333         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 334         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
 335         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
 336         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
 337
 338 /*
 339  * Mapped
 340  */
 341 #define IN6_IS_ADDR_V4MAPPED(a)               \
 342         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 343         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 344         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == \
 345         ntohl(0x0000ffff)))
 346
 347 /*
 348  * 6to4
 349  */
 350 #define IN6_IS_ADDR_6TO4(x)     (ntohs((x)->s6_addr16[0]) == 0x2002)
 351
 352 /*
 353  * KAME Scope Values
 354  */
 355
 356 #ifdef KERNEL   /* XXX nonstandard */
 357 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
 358 #define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01
 359 #define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
 360 #define IPV6_ADDR_SCOPE_SITELOCAL       0x05
 361 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08    /* just used in this file */
 362 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
 363 #else
 364 #define __IPV6_ADDR_SCOPE_NODELOCAL     0x01
 365 #define __IPV6_ADDR_SCOPE_INTFACELOCAL  0x01
 366 #define __IPV6_ADDR_SCOPE_LINKLOCAL     0x02
 367 #define __IPV6_ADDR_SCOPE_SITELOCAL     0x05
 368 #define __IPV6_ADDR_SCOPE_ORGLOCAL      0x08    /* just used in this file */
 369 #define __IPV6_ADDR_SCOPE_GLOBAL        0x0e
 370 #endif
 371
 372 /*
 373  * Unicast Scope
 374  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 375  */
 376 #define IN6_IS_ADDR_LINKLOCAL(a)        \
 377         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
 378 #define IN6_IS_ADDR_SITELOCAL(a)        \
 379         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
 380
 381 /*
 382  * Multicast
 383  */
 384 #define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)
 385
 386 /*
 387  * Unique Local IPv6 Unicast Addresses (per RFC 4193)
 388  */
 389 #define IN6_IS_ADDR_UNIQUE_LOCAL(a) \
 390         (((a)->s6_addr[0] == 0xfc) || ((a)->s6_addr[0] == 0xfd))
 391
 392 #ifdef KERNEL   /* XXX nonstandard */
 393 #define IPV6_ADDR_MC_SCOPE(a)           ((a)->s6_addr[1] & 0x0f)
 394 #else
 395 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 396 #endif
 397
 398 /*
 399  * Multicast Scope
 400  */
 401 #ifdef KERNEL   /* refers nonstandard items */
 402 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 403         (IN6_IS_ADDR_MULTICAST(a) &&    \
 404         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
 405 #define IN6_IS_ADDR_MC_INTFACELOCAL(a)  \
 406         (IN6_IS_ADDR_MULTICAST(a) &&    \
 407         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
 408 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 409         (IN6_IS_ADDR_MULTICAST(a) &&    \
 410         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
 411 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 412         (IN6_IS_ADDR_MULTICAST(a) &&    \
 413         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
 414 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 415         (IN6_IS_ADDR_MULTICAST(a) &&    \
 416         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
 417 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 418         (IN6_IS_ADDR_MULTICAST(a) &&    \
 419         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
 420 #else
 421 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 422         (IN6_IS_ADDR_MULTICAST(a) &&    \
 423         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
 424 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 425         (IN6_IS_ADDR_MULTICAST(a) &&    \
 426         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
 427 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 428         (IN6_IS_ADDR_MULTICAST(a) &&    \
 429         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
 430 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 431         (IN6_IS_ADDR_MULTICAST(a) &&    \
 432         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
 433 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 434         (IN6_IS_ADDR_MULTICAST(a) &&    \
 435         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
 436 #endif
 437
 438 #ifdef KERNEL   /* nonstandard */
 439 /*
 440  * KAME Scope
 441  */
 442 #define IN6_IS_SCOPE_LINKLOCAL(a)       \
 443         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 444         (IN6_IS_ADDR_MC_LINKLOCAL(a)))
 445
 446 #define IN6_IS_SCOPE_EMBED(a)                   \
 447         ((IN6_IS_ADDR_LINKLOCAL(a)) ||          \
 448         (IN6_IS_ADDR_MC_LINKLOCAL(a)) ||        \
 449         (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
 450
 451 #define IFA6_IS_DEPRECATED(a, t) \
 452         ((a)->ia6_lifetime.ia6ti_preferred != 0 && \
 453         (a)->ia6_lifetime.ia6ti_preferred < (t))
 454 #define IFA6_IS_INVALID(a, t) \
 455         ((a)->ia6_lifetime.ia6ti_expire != 0 && \
 456         (a)->ia6_lifetime.ia6ti_expire < (t))
 457 #endif /* KERNEL */
 458
 459 #ifdef PRIVATE
 460 struct route_in6_old {
 461         void            *ro_rt;
 462         uint32_t        ro_flags;
 463         struct sockaddr_in6 ro_dst;
 464 };
 465 #endif /* PRIVATE */
 466
 467 #ifdef BSD_KERNEL_PRIVATE
 468 /*
 469  * IP6 route structure
 470  *
 471  * A route consists of a destination address and a reference
 472  * to a routing entry.  These are often held by protocols
 473  * in their control blocks, e.g. inpcb.
 474  */
 475 struct route_in6 {
 476         /*
 477          * N.B: struct route_in6 must begin with ro_{rt,srcia,flags}
 478          * because the code does some casts of a 'struct route_in6 *'
 479          * to a 'struct route *'.
 480          */
 481         struct rtentry  *ro_rt;
 482         struct ifaddr   *ro_srcia;
 483         uint32_t        ro_flags;       /* route flags */
 484         struct sockaddr_in6 ro_dst;
 485 };
 486 #endif /* BSD_KERNEL_PRIVATE */
 487
 488 /*
 489  * Options for use with [gs]etsockopt at the IPV6 level.
 490  * First word of comment is data type; bool is stored in int.
 491  */
 492 /* no hdrincl */
 493 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 494 /*
 495  * RFC 3542 define the following socket options in a manner incompatible
 496  * with RFC 2292:
 497  *   IPV6_PKTINFO
 498  *   IPV6_HOPLIMIT
 499  *   IPV6_NEXTHOP
 500  *   IPV6_HOPOPTS
 501  *   IPV6_DSTOPTS
 502  *   IPV6_RTHDR
 503  *
 504  * To use the new IPv6 Sockets options introduced by RFC 3542
 505  * the constant __APPLE_USE_RFC_3542 must be defined before
 506  * including <netinet/in.h>
 507  *
 508  * To use the old IPv6 Sockets options from RFC 2292
 509  * the constant __APPLE_USE_RFC_2292 must be defined before
 510  * including <netinet/in.h>
 511  *
 512  * Note that eventually RFC 3542 is going to be the
 513  * default and RFC 2292 will be obsolete.
 514  */
 515 #ifdef BSD_KERNEL_PRIVATE
 516 #define __APPLE_USE_RFC_3542 1
 517 #endif /* BSD_KERNEL_PRIVATE */
 518
 519 #if defined(__APPLE_USE_RFC_3542) && defined(__APPLE_USE_RFC_2292)
 520 #error "__APPLE_USE_RFC_3542 and __APPLE_USE_RFC_2292 cannot be both defined"
 521 #endif
 522
 523 #if 0 /* the followings are relic in IPv4 and hence are disabled */
 524 #define IPV6_OPTIONS            1  /* buf/ip6_opts; set/get IP6 options */
 525 #define IPV6_RECVOPTS           5  /* bool; receive all IP6 opts w/dgram */
 526 #define IPV6_RECVRETOPTS        6  /* bool; receive IP6 opts for response */
 527 #define IPV6_RECVDSTADDR        7  /* bool; receive IP6 dst addr w/dgram */
 528 #define IPV6_RETOPTS            8  /* ip6_opts; set/get IP6 options */
 529 #endif /* 0 */
 530 #define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
 531 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 532 #define IPV6_UNICAST_HOPS       4  /* int; IP6 hops */
 533 #define IPV6_MULTICAST_IF       9  /* __uint8_t; set/get IP6 multicast i/f  */
 534 #define IPV6_MULTICAST_HOPS     10 /* __uint8_t; set/get IP6 multicast hops */
 535 #define IPV6_MULTICAST_LOOP     11 /* __uint8_t; set/get IP6 mcast loopback */
 536 #define IPV6_JOIN_GROUP         12 /* ip6_mreq; join a group membership */
 537 #define IPV6_LEAVE_GROUP        13 /* ip6_mreq; leave a group membership */
 538
 539 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 540 #define IPV6_PORTRANGE          14 /* int; range to choose for unspec port */
 541 #define ICMP6_FILTER            18 /* icmp6_filter; icmp6 filter */
 542 #define IPV6_2292PKTINFO        19 /* bool; send/recv if, src/dst addr */
 543 #define IPV6_2292HOPLIMIT       20 /* bool; hop limit */
 544 #define IPV6_2292NEXTHOP        21 /* bool; next hop addr */
 545 #define IPV6_2292HOPOPTS        22 /* bool; hop-by-hop option */
 546 #define IPV6_2292DSTOPTS        23 /* bool; destinaion option */
 547 #define IPV6_2292RTHDR          24 /* ip6_rthdr: routing header */
 548
 549 /* buf/cmsghdr; set/get IPv6 options [obsoleted by RFC3542] */
 550 #define IPV6_2292PKTOPTIONS     25
 551
 552 #ifdef __APPLE_USE_RFC_2292
 553 #define IPV6_PKTINFO    IPV6_2292PKTINFO
 554 #define IPV6_HOPLIMIT   IPV6_2292HOPLIMIT
 555 #define IPV6_NEXTHOP    IPV6_2292NEXTHOP
 556 #define IPV6_HOPOPTS    IPV6_2292HOPOPTS
 557 #define IPV6_DSTOPTS    IPV6_2292DSTOPTS
 558 #define IPV6_RTHDR      IPV6_2292RTHDR
 559 #define IPV6_PKTOPTIONS IPV6_2292PKTOPTIONS
 560 #endif /* __APPLE_USE_RFC_2292 */
 561
 562 #define IPV6_CHECKSUM           26 /* int; checksum offset for raw socket */
 563 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 564 #define IPV6_V6ONLY             27 /* bool; only bind INET6 at wildcard bind */
 565 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 566 #ifndef KERNEL
 567 #define IPV6_BINDV6ONLY         IPV6_V6ONLY
 568 #endif /* KERNEL */
 569
 570
 571 #if 1 /* IPSEC */
 572 #define IPV6_IPSEC_POLICY       28 /* struct; get/set security policy */
 573 #endif /* 1 */
 574 #define IPV6_FAITH              29 /* deprecated */
 575
 576 #if 1 /* IPV6FIREWALL */
 577 #define IPV6_FW_ADD             30 /* add a firewall rule to chain */
 578 #define IPV6_FW_DEL             31 /* delete a firewall rule from chain */
 579 #define IPV6_FW_FLUSH           32 /* flush firewall rule chain */
 580 #define IPV6_FW_ZERO            33 /* clear single/all firewall counter(s) */
 581 #define IPV6_FW_GET             34 /* get entire firewall rule chain */
 582 #endif /* 1 */
 583
 584 /*
 585  * APPLE: NOTE the value of those 2 options is kept unchanged from
 586  *   previous version of darwin/OS X for binary compatibility reasons
 587  *   and differ from FreeBSD (values 57 and 61). See below.
 588  */
 589 #define IPV6_RECVTCLASS         35 /* bool; recv traffic class values */
 590 #define IPV6_TCLASS             36 /* int; send traffic class value */
 591
 592 #ifdef __APPLE_USE_RFC_3542
 593 /* new socket options introduced in RFC3542 */
 594 /*
 595  * ip6_dest; send dst option before rthdr
 596  * APPLE: Value purposely different than FreeBSD (35) to avoid
 597  * collision with definition of IPV6_RECVTCLASS in previous
 598  * darwin implementations
 599  */
 600 #define IPV6_RTHDRDSTOPTS       57
 601
 602 /*
 603  * bool; recv if, dst addr
 604  * APPLE: Value purposely different than FreeBSD(36) to avoid
 605  * collision with definition of IPV6_TCLASS in previous
 606  * darwin implementations
 607  */
 608 #define IPV6_RECVPKTINFO        61
 609
 610 #define IPV6_RECVHOPLIMIT       37 /* bool; recv hop limit */
 611 #define IPV6_RECVRTHDR          38 /* bool; recv routing header */
 612 #define IPV6_RECVHOPOPTS        39 /* bool; recv hop-by-hop option */
 613 #define IPV6_RECVDSTOPTS        40 /* bool; recv dst option after rthdr */
 614 #ifdef KERNEL
 615 #define IPV6_RECVRTHDRDSTOPTS   41 /* bool; recv dst option before rthdr */
 616 #endif
 617
 618 #define IPV6_USE_MIN_MTU        42 /* bool; send packets at the minimum MTU */
 619 #define IPV6_RECVPATHMTU        43 /* bool; notify an according MTU */
 620
 621 /*
 622  * mtuinfo; get the current path MTU (sopt), 4 bytes int;
 623  * MTU notification (cmsg)
 624  */
 625 #define IPV6_PATHMTU            44
 626
 627 #if 0 /* obsoleted during 2292bis -> 3542 */
 628 /* no data; ND reachability confirm (cmsg only/not in of RFC3542) */
 629 #define IPV6_REACHCONF          45
 630 #endif
 631 /* more new socket options introduced in RFC3542 */
 632 #define IPV6_3542PKTINFO        46 /* in6_pktinfo; send if, src addr */
 633 #define IPV6_3542HOPLIMIT       47 /* int; send hop limit */
 634 #define IPV6_3542NEXTHOP        48 /* sockaddr; next hop addr */
 635 #define IPV6_3542HOPOPTS        49 /* ip6_hbh; send hop-by-hop option */
 636 #define IPV6_3542DSTOPTS        50 /* ip6_dest; send dst option befor rthdr */
 637 #define IPV6_3542RTHDR          51 /* ip6_rthdr; send routing header */
 638
 639 #define IPV6_PKTINFO    IPV6_3542PKTINFO
 640 #define IPV6_HOPLIMIT   IPV6_3542HOPLIMIT
 641 #define IPV6_NEXTHOP    IPV6_3542NEXTHOP
 642 #define IPV6_HOPOPTS    IPV6_3542HOPOPTS
 643 #define IPV6_DSTOPTS    IPV6_3542DSTOPTS
 644 #define IPV6_RTHDR      IPV6_3542RTHDR
 645
 646 #define IPV6_AUTOFLOWLABEL      59 /* bool; attach flowlabel automagically */
 647
 648 #define IPV6_DONTFRAG           62 /* bool; disable IPv6 fragmentation */
 649
 650 /* int; prefer temporary addresses as the source address. */
 651 #define IPV6_PREFER_TEMPADDR    63
 652
 653 /*
 654  * The following option is private; do not use it from user applications.
 655  * It is deliberately defined to the same value as IP_MSFILTER.
 656  */
 657 #define IPV6_MSFILTER           74 /* struct __msfilterreq; */
 658 #endif /* __APPLE_USE_RFC_3542 */
 659
 660 #define IPV6_BOUND_IF           125 /* int; set/get bound interface */
 661
 662 #ifdef PRIVATE
 663 #define IPV6_NO_IFT_CELLULAR    6969 /* for internal use only */
 664 #define IPV6_OUT_IF             9696 /* for internal use only */
 665 #endif /* PRIVATE */
 666
 667 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 668
 669 #define IPV6_RTHDR_LOOSE        0 /* this hop need not be a neighbor. */
 670 #define IPV6_RTHDR_STRICT       1 /* this hop must be a neighbor. */
 671 #define IPV6_RTHDR_TYPE_0       0 /* IPv6 routing header type 0 */
 672
 673 /*
 674  * Defaults and limits for options
 675  */
 676 #define IPV6_DEFAULT_MULTICAST_HOPS 1   /* normally limit m'casts to 1 hop  */
 677 #define IPV6_DEFAULT_MULTICAST_LOOP 1   /* normally hear sends if a member  */
 678
 679 /*
 680  * The im6o_membership vector for each socket is now dynamically allocated at
 681  * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized
 682  * according to a power-of-two increment.
 683  */
 684 #define IPV6_MIN_MEMBERSHIPS    31
 685 #define IPV6_MAX_MEMBERSHIPS    4095
 686
 687 /*
 688  * Default resource limits for IPv6 multicast source filtering.
 689  * These may be modified by sysctl.
 690  */
 691 #define IPV6_MAX_GROUP_SRC_FILTER       512     /* sources per group */
 692 #define IPV6_MAX_SOCK_SRC_FILTER        128     /* sources per socket/group */
 693
 694 /*
 695  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 696  */
 697 struct ipv6_mreq {
 698         struct in6_addr ipv6mr_multiaddr;
 699         unsigned int    ipv6mr_interface;
 700 };
 701
 702 /*
 703  * IPV6_2292PKTINFO: Packet information(RFC2292 sec 5)
 704  */
 705 struct in6_pktinfo {
 706         struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
 707         unsigned int    ipi6_ifindex;   /* send/recv interface index */
 708 };
 709
 710 /*
 711  * Control structure for IPV6_RECVPATHMTU socket option.
 712  */
 713 struct ip6_mtuinfo {
 714         struct sockaddr_in6 ip6m_addr;  /* or sockaddr_storage? */
 715         uint32_t ip6m_mtu;
 716 };
 717
 718 /*
 719  * Argument for IPV6_PORTRANGE:
 720  * - which range to search when port is unspecified at bind() or connect()
 721  */
 722 #define IPV6_PORTRANGE_DEFAULT  0       /* default range */
 723 #define IPV6_PORTRANGE_HIGH     1       /* "high" - request firewall bypass */
 724 #define IPV6_PORTRANGE_LOW      2       /* "low" - vouchsafe security */
 725
 726 /*
 727  * Definitions for inet6 sysctl operations.
 728  *
 729  * Third level is protocol number.
 730  * Fourth level is desired variable within that protocol.
 731  */
 732 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1)  /* don't list to IPV6PROTO_MAX */
 733
 734 /*
 735  * Names for IP sysctl objects
 736  */
 737 #define IPV6CTL_FORWARDING      1       /* act as router */
 738 #define IPV6CTL_SENDREDIRECTS   2       /* may send redirects when forwarding */
 739 #define IPV6CTL_DEFHLIM         3       /* default Hop-Limit */
 740 #ifdef notyet
 741 #define IPV6CTL_DEFMTU          4       /* default MTU */
 742 #endif
 743 #define IPV6CTL_FORWSRCRT       5       /* forward source-routed dgrams */
 744 #define IPV6CTL_STATS           6       /* stats */
 745 #define IPV6CTL_MRTSTATS        7       /* multicast forwarding stats */
 746 #define IPV6CTL_MRTPROTO        8       /* multicast routing protocol */
 747 #define IPV6CTL_MAXFRAGPACKETS  9       /* max packets reassembly queue */
 748 #define IPV6CTL_SOURCECHECK     10      /* verify source route and intf */
 749 #define IPV6CTL_SOURCECHECK_LOGINT 11   /* minimume logging interval */
 750 #define IPV6CTL_ACCEPT_RTADV    12
 751 #define IPV6CTL_KEEPFAITH       13      /* deprecated */
 752 #define IPV6CTL_LOG_INTERVAL    14
 753 #define IPV6CTL_HDRNESTLIMIT    15
 754 #define IPV6CTL_DAD_COUNT       16
 755 #define IPV6CTL_AUTO_FLOWLABEL  17
 756 #define IPV6CTL_DEFMCASTHLIM    18
 757 #define IPV6CTL_GIF_HLIM        19      /* default HLIM for gif encap packet */
 758 #define IPV6CTL_KAME_VERSION    20
 759 #define IPV6CTL_USE_DEPRECATED  21      /* use deprec addr (RFC2462 5.5.4) */
 760 #define IPV6CTL_RR_PRUNE        22      /* walk timer for router renumbering */
 761 #if 0   /* obsolete */
 762 #define IPV6CTL_MAPPED_ADDR     23
 763 #endif
 764 #define IPV6CTL_V6ONLY          24
 765 #define IPV6CTL_RTEXPIRE        25      /* cloned route expiration time */
 766 #define IPV6CTL_RTMINEXPIRE     26      /* min value for expiration time */
 767 #define IPV6CTL_RTMAXCACHE      27      /* trigger level for dynamic expire */
 768
 769 #define IPV6CTL_USETEMPADDR     32      /* use temporary addresses [RFC 4941] */
 770 #define IPV6CTL_TEMPPLTIME      33      /* preferred lifetime for tmpaddrs */
 771 #define IPV6CTL_TEMPVLTIME      34      /* valid lifetime for tmpaddrs */
 772 #define IPV6CTL_AUTO_LINKLOCAL  35      /* automatic link-local addr assign */
 773 #define IPV6CTL_RIP6STATS       36      /* raw_ip6 stats */
 774 #define IPV6CTL_PREFER_TEMPADDR 37      /* prefer temporary addr as src */
 775 #define IPV6CTL_ADDRCTLPOLICY   38      /* get/set address selection policy */
 776 #define IPV6CTL_USE_DEFAULTZONE 39      /* use default scope zone */
 777
 778 #define IPV6CTL_MAXFRAGS        41      /* max fragments */
 779 #define IPV6CTL_MCAST_PMTU      44      /* enable pMTU discovery for mcast? */
 780
 781 #define IPV6CTL_NEIGHBORGCTHRESH 46
 782 #define IPV6CTL_MAXIFPREFIXES   47
 783 #define IPV6CTL_MAXIFDEFROUTERS 48
 784 #define IPV6CTL_MAXDYNROUTES    49
 785 #define ICMPV6CTL_ND6_ONLINKNSRFC4861   50
 786
 787 /* New entries should be added here from current IPV6CTL_MAXID value. */
 788 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 789 #define IPV6CTL_MAXID           51
 790
 791 #ifdef BSD_KERNEL_PRIVATE
 792 #define CTL_IPV6PROTO_NAMES { \
 793         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 794         { 0, 0 }, \
 795         { "tcp6", CTLTYPE_NODE }, \
 796         { 0, 0 }, \
 797         { 0, 0 }, \
 798         { 0, 0 }, \
 799         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 800         { 0, 0 }, \
 801         { 0, 0 }, \
 802         { "udp6", CTLTYPE_NODE }, \
 803         { 0, 0 }, \
 804         { 0, 0 }, \
 805         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 806         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 807         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 808         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 809         { 0, 0 }, \
 810         { "ip6", CTLTYPE_NODE }, \
 811         { 0, 0 }, \
 812         { 0, 0 }, \
 813         { 0, 0 }, \
 814         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 815         { 0, 0 }, \
 816         { "ipsec6", CTLTYPE_NODE }, \
 817         { 0, 0 }, \
 818         { 0, 0 }, \
 819         { 0, 0 }, \
 820         { 0, 0 }, \
 821         { 0, 0 }, \
 822         { 0, 0 }, \
 823         { "icmp6", CTLTYPE_NODE }, \
 824         { 0, 0 }, \
 825         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 826         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 827         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 828         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 829         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 830         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 831         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 832         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 833         { 0, 0 }, \
 834         { 0, 0 }, \
 835         { 0, 0 }, \
 836         { 0, 0 }, \
 837 }
 838 /*
 839  * Redefinition of mbuf flags
 840  */
 841 #define M_AUTHIPHDR     M_PROTO2
 842 #define M_DECRYPTED     M_PROTO3
 843 #define M_AUTHIPDGM     M_PROTO5
 844
 845 struct cmsghdr;
 846 struct mbuf;
 847 struct ifnet;
 848 struct in6_aliasreq;
 849
 850 extern uint16_t in6_pseudo(const struct in6_addr *, const struct in6_addr *,
 851     uint32_t);
 852 extern u_int16_t inet6_cksum(struct mbuf *, uint32_t, uint32_t, uint32_t);
 853
 854 #define in6_cksum(_m, _n, _o, _l)               \
 855         inet6_cksum(_m, _n, _o, _l)
 856
 857 extern int in6_addrscope(struct in6_addr *);
 858 extern struct in6_ifaddr *in6_ifawithscope(struct ifnet *, struct in6_addr *);
 859 extern struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
 860
 861 struct sockaddr;
 862
 863 extern void in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6);
 864 extern void in6_sin_2_v4mapsin6(struct sockaddr_in *sin,
 865     struct sockaddr_in6 *sin6);
 866 extern void in6_sin6_2_sin_in_sock(struct sockaddr *nam);
 867 extern int in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam);
 868
 869 extern uint32_t in6_finalize_cksum(struct mbuf *, uint32_t, int32_t,
 870     int32_t, uint32_t);
 871
 872 #define in6_delayed_cksum(_m)                   \
 873         ((void) in6_finalize_cksum(_m, 0, 0, -1, CSUM_DELAY_IPV6_DATA))
 874 #define in6_delayed_cksum_offset(_m, _o, _s, _p)        \
 875         ((void) in6_finalize_cksum(_m, _o, _s, _p, CSUM_DELAY_IPV6_DATA))
 876 #endif /* BSD_KERNEL_PRIVATE */
 877
 878 #ifdef KERNEL_PRIVATE
 879 /* exporte for ApplicationFirewall */
 880 extern int in6_localaddr(struct in6_addr *);
 881 extern int in6addr_local(struct in6_addr *);
 882 #endif /* KERNEL_PRIVATE */
 883
 884 #ifndef KERNEL
 885 __BEGIN_DECLS
 886 struct cmsghdr;
 887
 888 extern int inet6_option_space(int);
 889 extern int inet6_option_init(void *, struct cmsghdr **, int);
 890 extern int inet6_option_append(struct cmsghdr *, const __uint8_t *, int, int);
 891 extern __uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
 892 extern int inet6_option_next(const struct cmsghdr *, __uint8_t **);
 893 extern int inet6_option_find(const struct cmsghdr *, __uint8_t **, int);
 894
 895 extern size_t inet6_rthdr_space(int, int);
 896 extern struct cmsghdr *inet6_rthdr_init(void *, int);
 897 extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
 898     unsigned int);
 899 extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
 900 #if 0 /* not implemented yet */
 901 extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
 902 #endif
 903 extern int inet6_rthdr_segments(const struct cmsghdr *);
 904 extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
 905 extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
 906
 907 extern int inet6_opt_init(void *, socklen_t);
 908 extern int inet6_opt_append(void *, socklen_t, int, __uint8_t, socklen_t,
 909     __uint8_t, void **);
 910 extern int inet6_opt_finish(void *, socklen_t, int);
 911 extern int inet6_opt_set_val(void *, int, void *, socklen_t);
 912
 913 extern int inet6_opt_next(void *, socklen_t, int, __uint8_t *, socklen_t *,
 914     void **);
 915 extern int inet6_opt_find(void *, socklen_t, int, __uint8_t, socklen_t *,
 916     void **);
 917 extern int inet6_opt_get_val(void *, int, void *, socklen_t);
 918 extern socklen_t inet6_rth_space(int, int);
 919 extern void *inet6_rth_init(void *, socklen_t, int, int);
 920 extern int inet6_rth_add(void *, const struct in6_addr *);
 921 extern int inet6_rth_reverse(const void *, void *);
 922 extern int inet6_rth_segments(const void *);
 923 extern struct in6_addr *inet6_rth_getaddr(const void *, int);
 924 extern void addrsel_policy_init(void);
 925
 926 __END_DECLS
 927 #endif /* !KERNEL */
 928 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 929 #endif /* !_NETINET6_IN6_H_ */