bsd/netinet6/in6.h

   1 /*
   2  * Copyright (c) 2008-2018 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 #include <sys/_types/_sa_family_t.h>
 103
 104 /*
 105  * Identification of the network protocol stack
 106  * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
 107  * has the table of implementation/integration differences.
 108  */
 109 #define __KAME__
 110 #define __KAME_VERSION          "2009/apple-darwin"
 111
 112 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 113 /*
 114  * Local port number conventions:
 115  *
 116  * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
 117  * unless a kernel is compiled with IPNOPRIVPORTS defined.
 118  *
 119  * When a user does a bind(2) or connect(2) with a port number of zero,
 120  * a non-conflicting local port address is chosen.
 121  *
 122  * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
 123  * that is settable by sysctl(3); net.inet.ip.anonportmin and
 124  * net.inet.ip.anonportmax respectively.
 125  *
 126  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 127  * default assignment range.
 128  *
 129  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 130  *
 131  * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
 132  * and exists only for FreeBSD compatibility purposes.
 133  *
 134  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 135  * that is (by convention) restricted to privileged processes.
 136  * This convention is based on "vouchsafe" principles only.
 137  * It is only secure if you trust the remote host to restrict these ports.
 138  * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
 139  */
 140
 141 #define IPV6PORT_RESERVED       1024
 142 #define IPV6PORT_ANONMIN        49152
 143 #define IPV6PORT_ANONMAX        65535
 144 #define IPV6PORT_RESERVEDMIN    600
 145 #define IPV6PORT_RESERVEDMAX    (IPV6PORT_RESERVED-1)
 146 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 147
 148 /*
 149  * IPv6 address
 150  */
 151 typedef struct in6_addr {
 152         union {
 153                 __uint8_t   __u6_addr8[16];
 154                 __uint16_t  __u6_addr16[8];
 155                 __uint32_t  __u6_addr32[4];
 156         } __u6_addr;                    /* 128-bit IP6 address */
 157 } in6_addr_t;
 158
 159 #define s6_addr   __u6_addr.__u6_addr8
 160 #ifdef KERNEL   /* XXX nonstandard */
 161 #define s6_addr8  __u6_addr.__u6_addr8
 162 #define s6_addr16 __u6_addr.__u6_addr16
 163 #define s6_addr32 __u6_addr.__u6_addr32
 164 #endif
 165
 166 #define INET6_ADDRSTRLEN        46
 167
 168 /*
 169  * Socket address for IPv6
 170  */
 171 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 172 #define SIN6_LEN
 173 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 174 struct sockaddr_in6 {
 175         __uint8_t       sin6_len;       /* length of this struct(sa_family_t) */
 176         sa_family_t     sin6_family;    /* AF_INET6 (sa_family_t) */
 177         in_port_t       sin6_port;      /* Transport layer port # (in_port_t) */
 178         __uint32_t      sin6_flowinfo;  /* IP6 flow information */
 179         struct in6_addr sin6_addr;      /* IP6 address */
 180         __uint32_t      sin6_scope_id;  /* scope zone index */
 181 };
 182
 183 #ifdef KERNEL   /* XXX nonstandard */
 184 /*
 185  * Local definition for masks
 186  */
 187 #define IN6MASK0        {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
 188 #define IN6MASK7        {{{ 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 189                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 190 #define IN6MASK16       {{{ 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 191                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 192 #define IN6MASK32       {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
 193                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 194 #define IN6MASK64       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 195                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 196 #define IN6MASK96       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 197                             0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 198 #define IN6MASK128      {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 199                             0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
 200 #endif
 201
 202 #ifdef KERNEL_PRIVATE
 203 extern const struct sockaddr_in6 sa6_any;
 204
 205 extern const struct in6_addr in6mask0;
 206 extern const struct in6_addr in6mask7;
 207 extern const struct in6_addr in6mask16;
 208 extern const struct in6_addr in6mask32;
 209 extern const struct in6_addr in6mask64;
 210 extern const struct in6_addr in6mask96;
 211 extern const struct in6_addr in6mask128;
 212
 213 #define SIN6(s)         ((struct sockaddr_in6 *)(void *)s)
 214 #define satosin6(sa)    SIN6(sa)
 215 #define sin6tosa(sin6)  ((struct sockaddr *)(void *)(sin6))
 216 #define SIN6IFSCOPE(s)  SIN6(s)
 217 #endif /* KERNEL_PRIVATE */
 218
 219 #ifdef KERNEL   /* XXX nonstandard */
 220 /*
 221  * Macros started with IPV6_ADDR is KAME local
 222  */
 223 #if BYTE_ORDER == BIG_ENDIAN
 224 #define IPV6_ADDR_INT32_ONE     1
 225 #define IPV6_ADDR_INT32_TWO     2
 226 #define IPV6_ADDR_INT32_MNL     0xff010000
 227 #define IPV6_ADDR_INT32_MLL     0xff020000
 228 #define IPV6_ADDR_INT32_SMP     0x0000ffff
 229 #define IPV6_ADDR_INT16_ULL     0xfe80
 230 #define IPV6_ADDR_INT16_USL     0xfec0
 231 #define IPV6_ADDR_INT16_MLL     0xff02
 232 #elif BYTE_ORDER == LITTLE_ENDIAN
 233 #define IPV6_ADDR_INT32_ONE     0x01000000
 234 #define IPV6_ADDR_INT32_TWO     0x02000000
 235 #define IPV6_ADDR_INT32_MNL     0x000001ff
 236 #define IPV6_ADDR_INT32_MLL     0x000002ff
 237 #define IPV6_ADDR_INT32_SMP     0xffff0000
 238 #define IPV6_ADDR_INT16_ULL     0x80fe
 239 #define IPV6_ADDR_INT16_USL     0xc0fe
 240 #define IPV6_ADDR_INT16_MLL     0x02ff
 241 #endif
 242 #endif
 243
 244 /*
 245  * Definition of some useful macros to handle IP6 addresses
 246  */
 247 #define IN6ADDR_ANY_INIT \
 248         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 249             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 250 #define IN6ADDR_LOOPBACK_INIT \
 251         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 252             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 253 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 254 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
 255         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 256             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 257 #define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
 258         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 259             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 260 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
 261         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 262             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 263 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
 264         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 265             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
 266 #define IN6ADDR_LINKLOCAL_ALLV2ROUTERS_INIT \
 267         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 268             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16 }}}
 269 #define IN6ADDR_V4MAPPED_INIT \
 270         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 271             0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 272 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 273
 274 extern const struct in6_addr in6addr_any;
 275 extern const struct in6_addr in6addr_loopback;
 276 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 277 extern const struct in6_addr in6addr_nodelocal_allnodes;
 278 extern const struct in6_addr in6addr_linklocal_allnodes;
 279 extern const struct in6_addr in6addr_linklocal_allrouters;
 280 extern const struct in6_addr in6addr_linklocal_allv2routers;
 281 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 282
 283 /*
 284  * Equality
 285  * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
 286  * does not supply memcmp().  For userland memcmp() is preferred as it is
 287  * in ANSI standard.
 288  */
 289 #ifdef KERNEL
 290 #define IN6_ARE_ADDR_EQUAL(a, b) \
 291         (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], \
 292         sizeof (struct in6_addr)) == 0)
 293 #else
 294 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 295 #define IN6_ARE_ADDR_EQUAL(a, b) \
 296         (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof (struct in6_addr)) \
 297         == 0)
 298 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 299 #endif
 300
 301 #ifdef KERNEL                   /* non standard */
 302 /* see if two addresses are equal in a scope-conscious manner. */
 303 #define SA6_ARE_ADDR_EQUAL(a, b) \
 304         (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
 305         ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
 306         (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof (struct in6_addr)) == 0))
 307 #endif
 308
 309 /*
 310  * Unspecified
 311  */
 312 #define IN6_IS_ADDR_UNSPECIFIED(a)      \
 313         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 314         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 315         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
 316         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
 317
 318 /*
 319  * Loopback
 320  */
 321 #define IN6_IS_ADDR_LOOPBACK(a)         \
 322         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 323         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 324         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
 325         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
 326
 327 /*
 328  * IPv4 compatible
 329  */
 330 #define IN6_IS_ADDR_V4COMPAT(a)         \
 331         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 332         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 333         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
 334         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
 335         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
 336
 337 /*
 338  * Mapped
 339  */
 340 #define IN6_IS_ADDR_V4MAPPED(a)               \
 341         ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
 342         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
 343         (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == \
 344         ntohl(0x0000ffff)))
 345
 346 /*
 347  * 6to4
 348  */
 349 #define IN6_IS_ADDR_6TO4(x)     (ntohs((x)->s6_addr16[0]) == 0x2002)
 350
 351 /*
 352  * KAME Scope Values
 353  */
 354
 355 #ifdef KERNEL   /* XXX nonstandard */
 356 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
 357 #define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01
 358 #define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
 359 #define IPV6_ADDR_SCOPE_SITELOCAL       0x05
 360 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08    /* just used in this file */
 361 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
 362 #else
 363 #define __IPV6_ADDR_SCOPE_NODELOCAL     0x01
 364 #define __IPV6_ADDR_SCOPE_INTFACELOCAL  0x01
 365 #define __IPV6_ADDR_SCOPE_LINKLOCAL     0x02
 366 #define __IPV6_ADDR_SCOPE_SITELOCAL     0x05
 367 #define __IPV6_ADDR_SCOPE_ORGLOCAL      0x08    /* just used in this file */
 368 #define __IPV6_ADDR_SCOPE_GLOBAL        0x0e
 369 #endif
 370
 371 /*
 372  * Unicast Scope
 373  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 374  */
 375 #define IN6_IS_ADDR_LINKLOCAL(a)        \
 376         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
 377 #define IN6_IS_ADDR_SITELOCAL(a)        \
 378         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
 379
 380 /*
 381  * Multicast
 382  */
 383 #define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)
 384
 385 /*
 386  * Unique Local IPv6 Unicast Addresses (per RFC 4193)
 387  */
 388 #define IN6_IS_ADDR_UNIQUE_LOCAL(a) \
 389         (((a)->s6_addr[0] == 0xfc) || ((a)->s6_addr[0] == 0xfd))
 390
 391 #ifdef KERNEL   /* XXX nonstandard */
 392 #define IPV6_ADDR_MC_SCOPE(a)           ((a)->s6_addr[1] & 0x0f)
 393 #else
 394 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 395 #endif
 396
 397 /*
 398  * Multicast Scope
 399  */
 400 #ifdef KERNEL   /* refers nonstandard items */
 401 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 402         (IN6_IS_ADDR_MULTICAST(a) &&    \
 403         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
 404 #define IN6_IS_ADDR_MC_INTFACELOCAL(a)  \
 405         (IN6_IS_ADDR_MULTICAST(a) &&    \
 406         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
 407 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 408         (IN6_IS_ADDR_MULTICAST(a) &&    \
 409         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
 410 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 411         (IN6_IS_ADDR_MULTICAST(a) &&    \
 412         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
 413 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 414         (IN6_IS_ADDR_MULTICAST(a) &&    \
 415         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
 416 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 417         (IN6_IS_ADDR_MULTICAST(a) &&    \
 418         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
 419 #else
 420 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 421         (IN6_IS_ADDR_MULTICAST(a) &&    \
 422         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
 423 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 424         (IN6_IS_ADDR_MULTICAST(a) &&    \
 425         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
 426 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 427         (IN6_IS_ADDR_MULTICAST(a) &&    \
 428         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
 429 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 430         (IN6_IS_ADDR_MULTICAST(a) &&    \
 431         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
 432 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 433         (IN6_IS_ADDR_MULTICAST(a) &&    \
 434         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
 435 #endif
 436
 437 #ifdef KERNEL   /* nonstandard */
 438 /*
 439  * KAME Scope
 440  */
 441 #define IN6_IS_SCOPE_LINKLOCAL(a)       \
 442         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 443         (IN6_IS_ADDR_MC_LINKLOCAL(a)))
 444
 445 #define IN6_IS_SCOPE_EMBED(a)                   \
 446         ((IN6_IS_ADDR_LINKLOCAL(a)) ||          \
 447         (IN6_IS_ADDR_MC_LINKLOCAL(a)) ||        \
 448         (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
 449
 450 #define IFA6_IS_DEPRECATED(a, t) \
 451         ((a)->ia6_lifetime.ia6ti_preferred != 0 && \
 452         (a)->ia6_lifetime.ia6ti_preferred < (t))
 453 #define IFA6_IS_INVALID(a, t) \
 454         ((a)->ia6_lifetime.ia6ti_expire != 0 && \
 455         (a)->ia6_lifetime.ia6ti_expire < (t))
 456 #endif /* KERNEL */
 457
 458 #ifdef PRIVATE
 459 struct route_in6_old {
 460         void            *ro_rt;
 461         uint32_t        ro_flags;
 462         struct sockaddr_in6 ro_dst;
 463 };
 464 #endif /* PRIVATE */
 465
 466 #ifdef BSD_KERNEL_PRIVATE
 467 #include <net/if_llatbl.h>
 468 #include <sys/eventhandler.h>
 469
 470 /*
 471  * IP6 route structure
 472  *
 473  * A route consists of a destination address and a reference
 474  * to a routing entry.  These are often held by protocols
 475  * in their control blocks, e.g. inpcb.
 476  */
 477 struct route_in6 {
 478         /*
 479          * N.B: struct route_in6 must begin with ro_{rt,srcia,flags}
 480          * because the code does some casts of a 'struct route_in6 *'
 481          * to a 'struct route *'.
 482          */
 483         struct rtentry  *ro_rt;
 484         struct  llentry *ro_lle;
 485
 486         struct ifaddr   *ro_srcia;
 487         uint32_t        ro_flags;       /* route flags */
 488         struct sockaddr_in6 ro_dst;
 489 };
 490 #endif /* BSD_KERNEL_PRIVATE */
 491
 492 /*
 493  * Options for use with [gs]etsockopt at the IPV6 level.
 494  * First word of comment is data type; bool is stored in int.
 495  */
 496 /* no hdrincl */
 497 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 498 /*
 499  * RFC 3542 define the following socket options in a manner incompatible
 500  * with RFC 2292:
 501  *   IPV6_PKTINFO
 502  *   IPV6_HOPLIMIT
 503  *   IPV6_NEXTHOP
 504  *   IPV6_HOPOPTS
 505  *   IPV6_DSTOPTS
 506  *   IPV6_RTHDR
 507  *
 508  * To use the new IPv6 Sockets options introduced by RFC 3542
 509  * the constant __APPLE_USE_RFC_3542 must be defined before
 510  * including <netinet/in.h>
 511  *
 512  * To use the old IPv6 Sockets options from RFC 2292
 513  * the constant __APPLE_USE_RFC_2292 must be defined before
 514  * including <netinet/in.h>
 515  *
 516  * Note that eventually RFC 3542 is going to be the
 517  * default and RFC 2292 will be obsolete.
 518  */
 519 #ifdef BSD_KERNEL_PRIVATE
 520 #define __APPLE_USE_RFC_3542 1
 521 #endif /* BSD_KERNEL_PRIVATE */
 522
 523 #if defined(__APPLE_USE_RFC_3542) && defined(__APPLE_USE_RFC_2292)
 524 #error "__APPLE_USE_RFC_3542 and __APPLE_USE_RFC_2292 cannot be both defined"
 525 #endif
 526
 527 #if 0 /* the followings are relic in IPv4 and hence are disabled */
 528 #define IPV6_OPTIONS            1  /* buf/ip6_opts; set/get IP6 options */
 529 #define IPV6_RECVOPTS           5  /* bool; receive all IP6 opts w/dgram */
 530 #define IPV6_RECVRETOPTS        6  /* bool; receive IP6 opts for response */
 531 #define IPV6_RECVDSTADDR        7  /* bool; receive IP6 dst addr w/dgram */
 532 #define IPV6_RETOPTS            8  /* ip6_opts; set/get IP6 options */
 533 #endif /* 0 */
 534 #define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
 535 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 536 #define IPV6_UNICAST_HOPS       4  /* int; IP6 hops */
 537 #define IPV6_MULTICAST_IF       9  /* __uint8_t; set/get IP6 multicast i/f  */
 538 #define IPV6_MULTICAST_HOPS     10 /* __uint8_t; set/get IP6 multicast hops */
 539 #define IPV6_MULTICAST_LOOP     11 /* __uint8_t; set/get IP6 mcast loopback */
 540 #define IPV6_JOIN_GROUP         12 /* ip6_mreq; join a group membership */
 541 #define IPV6_LEAVE_GROUP        13 /* ip6_mreq; leave a group membership */
 542
 543 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 544 #define IPV6_PORTRANGE          14 /* int; range to choose for unspec port */
 545 #define ICMP6_FILTER            18 /* icmp6_filter; icmp6 filter */
 546 #define IPV6_2292PKTINFO        19 /* bool; send/recv if, src/dst addr */
 547 #define IPV6_2292HOPLIMIT       20 /* bool; hop limit */
 548 #define IPV6_2292NEXTHOP        21 /* bool; next hop addr */
 549 #define IPV6_2292HOPOPTS        22 /* bool; hop-by-hop option */
 550 #define IPV6_2292DSTOPTS        23 /* bool; destinaion option */
 551 #define IPV6_2292RTHDR          24 /* ip6_rthdr: routing header */
 552
 553 /* buf/cmsghdr; set/get IPv6 options [obsoleted by RFC3542] */
 554 #define IPV6_2292PKTOPTIONS     25
 555
 556 #ifdef __APPLE_USE_RFC_2292
 557 #define IPV6_PKTINFO    IPV6_2292PKTINFO
 558 #define IPV6_HOPLIMIT   IPV6_2292HOPLIMIT
 559 #define IPV6_NEXTHOP    IPV6_2292NEXTHOP
 560 #define IPV6_HOPOPTS    IPV6_2292HOPOPTS
 561 #define IPV6_DSTOPTS    IPV6_2292DSTOPTS
 562 #define IPV6_RTHDR      IPV6_2292RTHDR
 563 #define IPV6_PKTOPTIONS IPV6_2292PKTOPTIONS
 564 #endif /* __APPLE_USE_RFC_2292 */
 565
 566 #define IPV6_CHECKSUM           26 /* int; checksum offset for raw socket */
 567 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 568 #define IPV6_V6ONLY             27 /* bool; only bind INET6 at wildcard bind */
 569 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 570 #ifndef KERNEL
 571 #define IPV6_BINDV6ONLY         IPV6_V6ONLY
 572 #endif /* KERNEL */
 573
 574
 575 #if 1 /* IPSEC */
 576 #define IPV6_IPSEC_POLICY       28 /* struct; get/set security policy */
 577 #endif /* 1 */
 578 #define IPV6_FAITH              29 /* deprecated */
 579
 580 #if 1 /* IPV6FIREWALL */
 581 #define IPV6_FW_ADD             30 /* add a firewall rule to chain */
 582 #define IPV6_FW_DEL             31 /* delete a firewall rule from chain */
 583 #define IPV6_FW_FLUSH           32 /* flush firewall rule chain */
 584 #define IPV6_FW_ZERO            33 /* clear single/all firewall counter(s) */
 585 #define IPV6_FW_GET             34 /* get entire firewall rule chain */
 586 #endif /* 1 */
 587
 588 /*
 589  * APPLE: NOTE the value of those 2 options is kept unchanged from
 590  *   previous version of darwin/OS X for binary compatibility reasons
 591  *   and differ from FreeBSD (values 57 and 61). See below.
 592  */
 593 #define IPV6_RECVTCLASS         35 /* bool; recv traffic class values */
 594 #define IPV6_TCLASS             36 /* int; send traffic class value */
 595
 596 #ifdef __APPLE_USE_RFC_3542
 597 /* new socket options introduced in RFC3542 */
 598 /*
 599  * ip6_dest; send dst option before rthdr
 600  * APPLE: Value purposely different than FreeBSD (35) to avoid
 601  * collision with definition of IPV6_RECVTCLASS in previous
 602  * darwin implementations
 603  */
 604 #define IPV6_RTHDRDSTOPTS       57
 605
 606 /*
 607  * bool; recv if, dst addr
 608  * APPLE: Value purposely different than FreeBSD(36) to avoid
 609  * collision with definition of IPV6_TCLASS in previous
 610  * darwin implementations
 611  */
 612 #define IPV6_RECVPKTINFO        61
 613
 614 #define IPV6_RECVHOPLIMIT       37 /* bool; recv hop limit */
 615 #define IPV6_RECVRTHDR          38 /* bool; recv routing header */
 616 #define IPV6_RECVHOPOPTS        39 /* bool; recv hop-by-hop option */
 617 #define IPV6_RECVDSTOPTS        40 /* bool; recv dst option after rthdr */
 618 #ifdef KERNEL
 619 #define IPV6_RECVRTHDRDSTOPTS   41 /* bool; recv dst option before rthdr */
 620 #endif
 621
 622 #define IPV6_USE_MIN_MTU        42 /* bool; send packets at the minimum MTU */
 623 #define IPV6_RECVPATHMTU        43 /* bool; notify an according MTU */
 624
 625 /*
 626  * mtuinfo; get the current path MTU (sopt), 4 bytes int;
 627  * MTU notification (cmsg)
 628  */
 629 #define IPV6_PATHMTU            44
 630
 631 #if 0 /* obsoleted during 2292bis -> 3542 */
 632 /* no data; ND reachability confirm (cmsg only/not in of RFC3542) */
 633 #define IPV6_REACHCONF          45
 634 #endif
 635 /* more new socket options introduced in RFC3542 */
 636 #define IPV6_3542PKTINFO        46 /* in6_pktinfo; send if, src addr */
 637 #define IPV6_3542HOPLIMIT       47 /* int; send hop limit */
 638 #define IPV6_3542NEXTHOP        48 /* sockaddr; next hop addr */
 639 #define IPV6_3542HOPOPTS        49 /* ip6_hbh; send hop-by-hop option */
 640 #define IPV6_3542DSTOPTS        50 /* ip6_dest; send dst option befor rthdr */
 641 #define IPV6_3542RTHDR          51 /* ip6_rthdr; send routing header */
 642
 643 #define IPV6_PKTINFO    IPV6_3542PKTINFO
 644 #define IPV6_HOPLIMIT   IPV6_3542HOPLIMIT
 645 #define IPV6_NEXTHOP    IPV6_3542NEXTHOP
 646 #define IPV6_HOPOPTS    IPV6_3542HOPOPTS
 647 #define IPV6_DSTOPTS    IPV6_3542DSTOPTS
 648 #define IPV6_RTHDR      IPV6_3542RTHDR
 649
 650 #define IPV6_AUTOFLOWLABEL      59 /* bool; attach flowlabel automagically */
 651
 652 #define IPV6_DONTFRAG           62 /* bool; disable IPv6 fragmentation */
 653
 654 /* int; prefer temporary addresses as the source address. */
 655 #define IPV6_PREFER_TEMPADDR    63
 656
 657 /*
 658  * The following option is private; do not use it from user applications.
 659  * It is deliberately defined to the same value as IP_MSFILTER.
 660  */
 661 #define IPV6_MSFILTER           74 /* struct __msfilterreq; */
 662 #endif /* __APPLE_USE_RFC_3542 */
 663
 664 #define IPV6_BOUND_IF           125 /* int; set/get bound interface */
 665
 666 #ifdef PRIVATE
 667 #define IPV6_NO_IFT_CELLULAR    6969 /* for internal use only */
 668 #define IPV6_OUT_IF             9696 /* for internal use only */
 669 #endif /* PRIVATE */
 670
 671 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 672
 673 #define IPV6_RTHDR_LOOSE        0 /* this hop need not be a neighbor. */
 674 #define IPV6_RTHDR_STRICT       1 /* this hop must be a neighbor. */
 675 #define IPV6_RTHDR_TYPE_0       0 /* IPv6 routing header type 0 */
 676
 677 /*
 678  * Defaults and limits for options
 679  */
 680 #define IPV6_DEFAULT_MULTICAST_HOPS 1   /* normally limit m'casts to 1 hop  */
 681 #define IPV6_DEFAULT_MULTICAST_LOOP 1   /* normally hear sends if a member  */
 682
 683 /*
 684  * The im6o_membership vector for each socket is now dynamically allocated at
 685  * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized
 686  * according to a power-of-two increment.
 687  */
 688 #define IPV6_MIN_MEMBERSHIPS    31
 689 #define IPV6_MAX_MEMBERSHIPS    4095
 690
 691 /*
 692  * Default resource limits for IPv6 multicast source filtering.
 693  * These may be modified by sysctl.
 694  */
 695 #define IPV6_MAX_GROUP_SRC_FILTER       512     /* sources per group */
 696 #define IPV6_MAX_SOCK_SRC_FILTER        128     /* sources per socket/group */
 697
 698 /*
 699  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 700  */
 701 struct ipv6_mreq {
 702         struct in6_addr ipv6mr_multiaddr;
 703         unsigned int    ipv6mr_interface;
 704 };
 705
 706 /*
 707  * IPV6_2292PKTINFO: Packet information(RFC2292 sec 5)
 708  */
 709 struct in6_pktinfo {
 710         struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
 711         unsigned int    ipi6_ifindex;   /* send/recv interface index */
 712 };
 713
 714 /*
 715  * Control structure for IPV6_RECVPATHMTU socket option.
 716  */
 717 struct ip6_mtuinfo {
 718         struct sockaddr_in6 ip6m_addr;  /* or sockaddr_storage? */
 719         uint32_t ip6m_mtu;
 720 };
 721
 722 /*
 723  * Argument for IPV6_PORTRANGE:
 724  * - which range to search when port is unspecified at bind() or connect()
 725  */
 726 #define IPV6_PORTRANGE_DEFAULT  0       /* default range */
 727 #define IPV6_PORTRANGE_HIGH     1       /* "high" - request firewall bypass */
 728 #define IPV6_PORTRANGE_LOW      2       /* "low" - vouchsafe security */
 729
 730 /*
 731  * Definitions for inet6 sysctl operations.
 732  *
 733  * Third level is protocol number.
 734  * Fourth level is desired variable within that protocol.
 735  */
 736 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1)  /* don't list to IPV6PROTO_MAX */
 737
 738 /*
 739  * Names for IP sysctl objects
 740  */
 741 #define IPV6CTL_FORWARDING      1       /* act as router */
 742 #define IPV6CTL_SENDREDIRECTS   2       /* may send redirects when forwarding */
 743 #define IPV6CTL_DEFHLIM         3       /* default Hop-Limit */
 744 #ifdef notyet
 745 #define IPV6CTL_DEFMTU          4       /* default MTU */
 746 #endif
 747 #define IPV6CTL_FORWSRCRT       5       /* forward source-routed dgrams */
 748 #define IPV6CTL_STATS           6       /* stats */
 749 #define IPV6CTL_MRTSTATS        7       /* multicast forwarding stats */
 750 #define IPV6CTL_MRTPROTO        8       /* multicast routing protocol */
 751 #define IPV6CTL_MAXFRAGPACKETS  9       /* max packets reassembly queue */
 752 #define IPV6CTL_SOURCECHECK     10      /* verify source route and intf */
 753 #define IPV6CTL_SOURCECHECK_LOGINT 11   /* minimume logging interval */
 754 #define IPV6CTL_ACCEPT_RTADV    12
 755 #define IPV6CTL_KEEPFAITH       13      /* deprecated */
 756 #define IPV6CTL_LOG_INTERVAL    14
 757 #define IPV6CTL_HDRNESTLIMIT    15
 758 #define IPV6CTL_DAD_COUNT       16
 759 #define IPV6CTL_AUTO_FLOWLABEL  17
 760 #define IPV6CTL_DEFMCASTHLIM    18
 761 #define IPV6CTL_GIF_HLIM        19      /* default HLIM for gif encap packet */
 762 #define IPV6CTL_KAME_VERSION    20
 763 #define IPV6CTL_USE_DEPRECATED  21      /* use deprec addr (RFC2462 5.5.4) */
 764 #define IPV6CTL_RR_PRUNE        22      /* walk timer for router renumbering */
 765 #if 0   /* obsolete */
 766 #define IPV6CTL_MAPPED_ADDR     23
 767 #endif
 768 #define IPV6CTL_V6ONLY          24
 769 #define IPV6CTL_RTEXPIRE        25      /* cloned route expiration time */
 770 #define IPV6CTL_RTMINEXPIRE     26      /* min value for expiration time */
 771 #define IPV6CTL_RTMAXCACHE      27      /* trigger level for dynamic expire */
 772
 773 #define IPV6CTL_USETEMPADDR     32      /* use temporary addresses [RFC 4941] */
 774 #define IPV6CTL_TEMPPLTIME      33      /* preferred lifetime for tmpaddrs */
 775 #define IPV6CTL_TEMPVLTIME      34      /* valid lifetime for tmpaddrs */
 776 #define IPV6CTL_AUTO_LINKLOCAL  35      /* automatic link-local addr assign */
 777 #define IPV6CTL_RIP6STATS       36      /* raw_ip6 stats */
 778 #define IPV6CTL_PREFER_TEMPADDR 37      /* prefer temporary addr as src */
 779 #define IPV6CTL_ADDRCTLPOLICY   38      /* get/set address selection policy */
 780 #define IPV6CTL_USE_DEFAULTZONE 39      /* use default scope zone */
 781
 782 #define IPV6CTL_MAXFRAGS        41      /* max fragments */
 783 #define IPV6CTL_MCAST_PMTU      44      /* enable pMTU discovery for mcast? */
 784
 785 #define IPV6CTL_NEIGHBORGCTHRESH 46
 786 #define IPV6CTL_MAXIFPREFIXES   47
 787 #define IPV6CTL_MAXIFDEFROUTERS 48
 788 #define IPV6CTL_MAXDYNROUTES    49
 789 #define ICMPV6CTL_ND6_ONLINKNSRFC4861   50
 790
 791 /* New entries should be added here from current IPV6CTL_MAXID value. */
 792 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 793 #define IPV6CTL_MAXID           51
 794
 795 #ifdef BSD_KERNEL_PRIVATE
 796 #define CTL_IPV6PROTO_NAMES { \
 797         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 798         { 0, 0 }, \
 799         { "tcp6", CTLTYPE_NODE }, \
 800         { 0, 0 }, \
 801         { 0, 0 }, \
 802         { 0, 0 }, \
 803         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 804         { 0, 0 }, \
 805         { 0, 0 }, \
 806         { "udp6", CTLTYPE_NODE }, \
 807         { 0, 0 }, \
 808         { 0, 0 }, \
 809         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 810         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 811         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 812         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 813         { 0, 0 }, \
 814         { "ip6", CTLTYPE_NODE }, \
 815         { 0, 0 }, \
 816         { 0, 0 }, \
 817         { 0, 0 }, \
 818         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 819         { 0, 0 }, \
 820         { "ipsec6", CTLTYPE_NODE }, \
 821         { 0, 0 }, \
 822         { 0, 0 }, \
 823         { 0, 0 }, \
 824         { 0, 0 }, \
 825         { 0, 0 }, \
 826         { 0, 0 }, \
 827         { "icmp6", CTLTYPE_NODE }, \
 828         { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 834         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 835         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 836         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 837         { 0, 0 }, \
 838         { 0, 0 }, \
 839         { 0, 0 }, \
 840         { 0, 0 }, \
 841 }
 842 /*
 843  * Redefinition of mbuf flags
 844  */
 845 #define M_AUTHIPHDR     M_PROTO2
 846 #define M_DECRYPTED     M_PROTO3
 847 #define M_AUTHIPDGM     M_PROTO5
 848
 849 struct cmsghdr;
 850 struct mbuf;
 851 struct ifnet;
 852 struct in6_aliasreq;
 853 struct lltable;
 854
 855 extern struct lltable * in6_lltattach(struct ifnet *ifp);
 856 extern uint16_t in6_pseudo(const struct in6_addr *, const struct in6_addr *,
 857     uint32_t);
 858 extern u_int16_t inet6_cksum(struct mbuf *, uint32_t, uint32_t, uint32_t);
 859 extern u_int16_t inet6_cksum_buffer(const uint8_t *, uint32_t, uint32_t,
 860     uint32_t);
 861
 862 #define in6_cksum(_m, _n, _o, _l)                       \
 863         inet6_cksum(_m, _n, _o, _l)
 864 #define in6_cksum_buffer(_b, _n, _o, _l)                \
 865         inet6_cksum_buffer(_b, _n, _o, _l)
 866
 867 extern int in6_addrscope(struct in6_addr *);
 868 extern struct in6_ifaddr *in6_ifawithscope(struct ifnet *, struct in6_addr *);
 869 extern struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
 870
 871 struct sockaddr;
 872
 873 extern void in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6);
 874 extern void in6_sin_2_v4mapsin6(struct sockaddr_in *sin,
 875     struct sockaddr_in6 *sin6);
 876 extern void in6_sin6_2_sin_in_sock(struct sockaddr *nam);
 877 extern int in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam);
 878
 879 extern uint32_t in6_finalize_cksum(struct mbuf *, uint32_t, int32_t,
 880     int32_t, uint32_t);
 881
 882 #define in6_delayed_cksum(_m)                   \
 883         ((void) in6_finalize_cksum(_m, 0, 0, -1, CSUM_DELAY_IPV6_DATA))
 884 #define in6_delayed_cksum_offset(_m, _o, _s, _p)        \
 885         ((void) in6_finalize_cksum(_m, _o, _s, _p, CSUM_DELAY_IPV6_DATA))
 886
 887 /* IPv6 protocol events */
 888 extern struct eventhandler_lists_ctxt in6_evhdlr_ctxt;
 889 /*
 890  * XXX Avoid reordering the enum values below.
 891  * If the order is changed, please make sure
 892  * in6_event2kev_array is also changed to reflect the
 893  * change in order of the enums
 894  */
 895 typedef enum {
 896         /* Address events */
 897         /*
 898          * XXX To avoid duplicacy and also for correctness
 899          * only report these for link local and stable addresses
 900          * NOTE: Link local address can never be marked detached
 901          * or duplicated.
 902          */
 903         IN6_ADDR_MARKED_DUPLICATED,
 904         IN6_ADDR_MARKED_DETACHED,
 905         IN6_ADDR_MARKED_DEPRECATED,
 906
 907         /* Expiry events */
 908         IN6_NDP_RTR_EXPIRY,
 909         IN6_NDP_PFX_EXPIRY,
 910         IN6_NDP_ADDR_EXPIRY,
 911
 912         /* XXX DNS expiry needs to be handled by user-space */
 913         /* MAX */
 914         IN6_EVENT_MAX,
 915 } in6_evhdlr_code_t;
 916
 917 struct in6_event2kev {
 918         in6_evhdlr_code_t       in6_event_code;
 919         uint32_t                in6_event_kev_subclass;
 920         uint32_t                in6_event_kev_code;
 921         const char              *in6_event_str;
 922 };
 923 extern struct in6_event2kev in6_event2kev_array[];
 924 extern void in6_eventhdlr_callback(struct eventhandler_entry_arg, in6_evhdlr_code_t,
 925     struct ifnet *, struct in6_addr *, uint32_t);
 926 extern void in6_event_enqueue_nwk_wq_entry(in6_evhdlr_code_t,
 927     struct ifnet *, struct in6_addr *, uint32_t);
 928
 929 typedef void (*in6_event_fn) (struct eventhandler_entry_arg, in6_evhdlr_code_t,
 930     struct ifnet *, struct in6_addr *, uint32_t);
 931 EVENTHANDLER_DECLARE(in6_event, in6_event_fn);
 932 #endif /* BSD_KERNEL_PRIVATE */
 933
 934 #ifdef PRIVATE
 935 /* CLAT46 events */
 936 typedef enum in6_clat46_evhdlr_code_t {
 937         IN6_CLAT46_EVENT_V4_FLOW,
 938         IN6_CLAT46_EVENT_V6_ADDR_CONFFAIL,
 939 } in6_clat46_evhdlr_code_t;
 940
 941 struct kev_netevent_clat46_data {
 942         in6_clat46_evhdlr_code_t clat46_event_code;
 943         pid_t epid;
 944         uuid_t euuid;
 945 };
 946 #endif /* PRIVATE */
 947
 948 #ifdef BSD_KERNEL_PRIVATE
 949 /* CLAT46 events */
 950 extern struct eventhandler_lists_ctxt in6_clat46_evhdlr_ctxt;
 951 extern void in6_clat46_eventhdlr_callback(struct eventhandler_entry_arg,
 952     in6_clat46_evhdlr_code_t, pid_t, uuid_t);
 953 extern void in6_clat46_event_enqueue_nwk_wq_entry(in6_clat46_evhdlr_code_t,
 954     pid_t, uuid_t);
 955
 956 typedef void (*in6_clat46_event_fn) (struct eventhandler_entry_arg, in6_clat46_evhdlr_code_t,
 957     pid_t, uuid_t);
 958 EVENTHANDLER_DECLARE(in6_clat46_event, in6_clat46_event_fn);
 959 #endif /* BSD_KERNEL_PRIVATE */
 960
 961 #ifdef KERNEL_PRIVATE
 962 /* exporte for ApplicationFirewall */
 963 extern int in6_localaddr(struct in6_addr *);
 964 extern int in6addr_local(struct in6_addr *);
 965 #endif /* KERNEL_PRIVATE */
 966
 967 #ifndef KERNEL
 968 __BEGIN_DECLS
 969 struct cmsghdr;
 970
 971 extern int inet6_option_space(int);
 972 extern int inet6_option_init(void *, struct cmsghdr **, int);
 973 extern int inet6_option_append(struct cmsghdr *, const __uint8_t *, int, int);
 974 extern __uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
 975 extern int inet6_option_next(const struct cmsghdr *, __uint8_t **);
 976 extern int inet6_option_find(const struct cmsghdr *, __uint8_t **, int);
 977
 978 extern size_t inet6_rthdr_space(int, int);
 979 extern struct cmsghdr *inet6_rthdr_init(void *, int);
 980 extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
 981     unsigned int);
 982 extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
 983 #if 0 /* not implemented yet */
 984 extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
 985 #endif
 986 extern int inet6_rthdr_segments(const struct cmsghdr *);
 987 extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
 988 extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
 989
 990 extern int inet6_opt_init(void *, socklen_t);
 991 extern int inet6_opt_append(void *, socklen_t, int, __uint8_t, socklen_t,
 992     __uint8_t, void **);
 993 extern int inet6_opt_finish(void *, socklen_t, int);
 994 extern int inet6_opt_set_val(void *, int, void *, socklen_t);
 995
 996 extern int inet6_opt_next(void *, socklen_t, int, __uint8_t *, socklen_t *,
 997     void **);
 998 extern int inet6_opt_find(void *, socklen_t, int, __uint8_t, socklen_t *,
 999     void **);
1000 extern int inet6_opt_get_val(void *, int, void *, socklen_t);
1001 extern socklen_t inet6_rth_space(int, int);
1002 extern void *inet6_rth_init(void *, socklen_t, int, int);
1003 extern int inet6_rth_add(void *, const struct in6_addr *);
1004 extern int inet6_rth_reverse(const void *, void *);
1005 extern int inet6_rth_segments(const void *);
1006 extern struct in6_addr *inet6_rth_getaddr(const void *, int);
1007
1008 __END_DECLS
1009 #endif /* !KERNEL */
1010 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
1011 #endif /* !_NETINET6_IN6_H_ */