StdLib/Include/netinet6/in6.h

   1 /*  $NetBSD: in6.h,v 1.57 2006/10/31 00:29:30 cbiere Exp $  */
   2 /*  $KAME: in6.h,v 1.83 2001/03/29 02:55:07 jinmei Exp $  */
   3
   4 /*
   5   Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
   6   This program and the accompanying materials are licensed and made available under
   7   the terms and conditions of the BSD License that accompanies this distribution.
   8   The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13 */
  14
  15 /*
  16  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms, with or without
  20  * modification, are permitted provided that the following conditions
  21  * are met:
  22  * 1. Redistributions of source code must retain the above copyright
  23  *    notice, this list of conditions and the following disclaimer.
  24  * 2. Redistributions in binary form must reproduce the above copyright
  25  *    notice, this list of conditions and the following disclaimer in the
  26  *    documentation and/or other materials provided with the distribution.
  27  * 3. Neither the name of the project nor the names of its contributors
  28  *    may be used to endorse or promote products derived from this software
  29  *    without specific prior written permission.
  30  *
  31  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  32  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  33  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  34  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  35  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  39  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  40  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  41  * SUCH DAMAGE.
  42  */
  43
  44 /*
  45  * Copyright (c) 1982, 1986, 1990, 1993
  46  *  The Regents of the University of California.  All rights reserved.
  47  *
  48  * Redistribution and use in source and binary forms, with or without
  49  * modification, are permitted provided that the following conditions
  50  * are met:
  51  * 1. Redistributions of source code must retain the above copyright
  52  *    notice, this list of conditions and the following disclaimer.
  53  * 2. Redistributions in binary form must reproduce the above copyright
  54  *    notice, this list of conditions and the following disclaimer in the
  55  *    documentation and/or other materials provided with the distribution.
  56  * 3. Neither the name of the University nor the names of its contributors
  57  *    may be used to endorse or promote products derived from this software
  58  *    without specific prior written permission.
  59  *
  60  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  61  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  62  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  63  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  64  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  65  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  66  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  67  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  68  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  69  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  70  * SUCH DAMAGE.
  71  *
  72  *  @(#)in.h  8.3 (Berkeley) 1/3/94
  73  */
  74
  75 #ifndef _NETINET6_IN6_H_
  76 #define _NETINET6_IN6_H_
  77
  78 #ifndef __KAME_NETINET_IN_H_INCLUDED_
  79 #error "do not include netinet6/in6.h directly, include netinet/in.h.  see RFC2553"
  80 #endif
  81
  82 #include <sys/socket.h>
  83
  84 /*
  85  * Identification of the network protocol stack
  86  * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
  87  * has the table of implementation/integration differences.
  88  */
  89 #define __KAME__
  90 #define __KAME_VERSION    "NetBSD-current"
  91
  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 #if defined(_NETBSD_SOURCE)
 121 #define IPV6PORT_RESERVED 1024
 122 #define IPV6PORT_ANONMIN  49152
 123 #define IPV6PORT_ANONMAX  65535
 124 #define IPV6PORT_RESERVEDMIN  600
 125 #define IPV6PORT_RESERVEDMAX  (IPV6PORT_RESERVED-1)
 126 #endif
 127
 128 /*
 129  * IPv6 address
 130  */
 131 struct in6_addr {
 132   union {
 133     __uint8_t   __u6_addr8[16];
 134     __uint16_t  __u6_addr16[8];
 135     uint32_t  __u6_addr32[4];
 136   } __u6_addr;      /* 128-bit IP6 address */
 137 };
 138
 139 #define s6_addr   __u6_addr.__u6_addr8
 140 #ifdef _KERNEL  /* XXX nonstandard */
 141 #define s6_addr8  __u6_addr.__u6_addr8
 142 #define s6_addr16 __u6_addr.__u6_addr16
 143 #define s6_addr32 __u6_addr.__u6_addr32
 144 #endif
 145
 146 #define INET6_ADDRSTRLEN  46
 147
 148 /*
 149  * Socket address for IPv6
 150  */
 151 #if defined(_NETBSD_SOURCE)
 152 #define SIN6_LEN
 153 #endif
 154 struct sockaddr_in6 {
 155   uint8_t   sin6_len; /* length of this struct(socklen_t)*/
 156   sa_family_t sin6_family;  /* AF_INET6 (sa_family_t) */
 157   in_port_t sin6_port;  /* Transport layer port */
 158   uint32_t  sin6_flowinfo;  /* IP6 flow information */
 159   struct in6_addr sin6_addr;  /* IP6 address */
 160   uint32_t  sin6_scope_id;  /* scope zone index */
 161 };
 162
 163 /*
 164  * Local definition for masks
 165  */
 166 #ifdef _KERNEL  /* XXX nonstandard */
 167 #define IN6MASK0  {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
 168 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
 169           0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 170 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 171           0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 172 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 173           0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 174 #define IN6MASK128  {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 175           0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
 176 #endif
 177
 178 #ifdef _KERNEL
 179 extern const struct sockaddr_in6 sa6_any;
 180
 181 extern const struct in6_addr in6mask0;
 182 extern const struct in6_addr in6mask32;
 183 extern const struct in6_addr in6mask64;
 184 extern const struct in6_addr in6mask96;
 185 extern const struct in6_addr in6mask128;
 186 #endif /* _KERNEL */
 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 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
 223   {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 224       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 225 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
 226   {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 227       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 228 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
 229   {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 230       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
 231
 232 extern const struct in6_addr in6addr_any;
 233 extern const struct in6_addr in6addr_loopback;
 234 extern const struct in6_addr in6addr_nodelocal_allnodes;
 235 extern const struct in6_addr in6addr_linklocal_allnodes;
 236 extern const struct in6_addr in6addr_linklocal_allrouters;
 237
 238 /*
 239  * Equality
 240  * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
 241  * does not supply memcmp().  For userland memcmp() is preferred as it is
 242  * in ANSI standard.
 243  */
 244 #ifdef _KERNEL
 245 #define IN6_ARE_ADDR_EQUAL(a, b)      \
 246     (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 247 #else
 248 #define IN6_ARE_ADDR_EQUAL(a, b)      \
 249     (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 250 #endif
 251
 252 /*
 253  * Unspecified
 254  */
 255 #define IN6_IS_ADDR_UNSPECIFIED(a)  \
 256   ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
 257    (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
 258    (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&  \
 259    (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
 260
 261 /*
 262  * Loopback
 263  */
 264 #define IN6_IS_ADDR_LOOPBACK(a)   \
 265   ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
 266    (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
 267    (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&  \
 268    (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
 269
 270 /*
 271  * IPv4 compatible
 272  */
 273 #define IN6_IS_ADDR_V4COMPAT(a)   \
 274   ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
 275    (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
 276    (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&  \
 277    (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
 278    (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
 279
 280 /*
 281  * Mapped
 282  */
 283 #define IN6_IS_ADDR_V4MAPPED(a)         \
 284   ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
 285    (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
 286    (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
 287
 288 /*
 289  * KAME Scope Values
 290  */
 291
 292 #ifdef _KERNEL  /* XXX nonstandard */
 293 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
 294 #define IPV6_ADDR_SCOPE_INTFACELOCAL  0x01
 295 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
 296 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
 297 #define IPV6_ADDR_SCOPE_ORGLOCAL  0x08  /* just used in this file */
 298 #define IPV6_ADDR_SCOPE_GLOBAL    0x0e
 299 #else
 300 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
 301 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
 302 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
 303 #define __IPV6_ADDR_SCOPE_ORGLOCAL  0x08  /* just used in this file */
 304 #define __IPV6_ADDR_SCOPE_GLOBAL  0x0e
 305 #endif
 306
 307 /*
 308  * Unicast Scope
 309  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 310  */
 311 #define IN6_IS_ADDR_LINKLOCAL(a)  \
 312   (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
 313 #define IN6_IS_ADDR_SITELOCAL(a)  \
 314   (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
 315
 316 /*
 317  * Multicast
 318  */
 319 #define IN6_IS_ADDR_MULTICAST(a)  ((a)->s6_addr[0] == 0xff)
 320
 321 #ifdef _KERNEL  /* XXX nonstandard */
 322 #define IPV6_ADDR_MC_SCOPE(a)   ((a)->s6_addr[1] & 0x0f)
 323 #else
 324 #define __IPV6_ADDR_MC_SCOPE(a)   ((a)->s6_addr[1] & 0x0f)
 325 #endif
 326
 327 /*
 328  * Multicast Scope
 329  */
 330 #ifdef _KERNEL  /* refers nonstandard items */
 331 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
 332   (IN6_IS_ADDR_MULTICAST(a) &&  \
 333    (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
 334 #define IN6_IS_ADDR_MC_INTFACELOCAL(a)  \
 335   (IN6_IS_ADDR_MULTICAST(a) &&  \
 336    (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
 337 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
 338   (IN6_IS_ADDR_MULTICAST(a) &&  \
 339    (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
 340 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
 341   (IN6_IS_ADDR_MULTICAST(a) &&  \
 342    (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
 343 #define IN6_IS_ADDR_MC_ORGLOCAL(a)  \
 344   (IN6_IS_ADDR_MULTICAST(a) &&  \
 345    (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
 346 #define IN6_IS_ADDR_MC_GLOBAL(a)  \
 347   (IN6_IS_ADDR_MULTICAST(a) &&  \
 348    (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
 349 #else
 350 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
 351   (IN6_IS_ADDR_MULTICAST(a) &&  \
 352    (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
 353 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
 354   (IN6_IS_ADDR_MULTICAST(a) &&  \
 355    (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
 356 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
 357   (IN6_IS_ADDR_MULTICAST(a) &&  \
 358    (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
 359 #define IN6_IS_ADDR_MC_ORGLOCAL(a)  \
 360   (IN6_IS_ADDR_MULTICAST(a) &&  \
 361    (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
 362 #define IN6_IS_ADDR_MC_GLOBAL(a)  \
 363   (IN6_IS_ADDR_MULTICAST(a) &&  \
 364    (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
 365 #endif
 366
 367 #ifdef _KERNEL  /* nonstandard */
 368 /*
 369  * KAME Scope
 370  */
 371 #define IN6_IS_SCOPE_LINKLOCAL(a) \
 372   ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 373    (IN6_IS_ADDR_MC_LINKLOCAL(a)))
 374
 375 #define IN6_IS_SCOPE_EMBEDDABLE(__a)  \
 376     (IN6_IS_SCOPE_LINKLOCAL(__a) || IN6_IS_ADDR_MC_INTFACELOCAL(__a))
 377
 378 #define IFA6_IS_DEPRECATED(a) \
 379   ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
 380    (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
 381    (a)->ia6_lifetime.ia6t_pltime)
 382 #define IFA6_IS_INVALID(a) \
 383   ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
 384    (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
 385    (a)->ia6_lifetime.ia6t_vltime)
 386 #endif
 387
 388 /*
 389  * IP6 route structure
 390  */
 391 #if defined(_NETBSD_SOURCE)
 392 struct route_in6 {
 393   struct  rtentry *ro_rt;
 394   struct  sockaddr_in6 ro_dst;
 395 };
 396 #endif
 397
 398 /*
 399  * Options for use with [gs]etsockopt at the IPV6 level.
 400  * First word of comment is data type; bool is stored in int.
 401  */
 402 /* no hdrincl */
 403 #if 0
 404 /* These are deprecated non-standard options which are no longer supported. */
 405 #define IPV6_OPTIONS    1  /* buf/ip6_opts; set/get IP6 options */
 406 #define IPV6_RECVOPTS   5  /* bool; receive all IP6 opts w/dgram */
 407 #define IPV6_RECVRETOPTS  6  /* bool; receive IP6 opts for response */
 408 #define IPV6_RECVDSTADDR  7  /* bool; receive IP6 dst addr w/dgram */
 409 #define IPV6_RETOPTS    8  /* ip6_opts; set/get IP6 options */
 410 #endif
 411 #define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
 412 #define IPV6_UNICAST_HOPS 4  /* int; IP6 hops */
 413 #define IPV6_MULTICAST_IF 9  /* u_int; set/get IP6 multicast i/f  */
 414 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
 415 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
 416 #define IPV6_JOIN_GROUP   12 /* ip6_mreq; join a group membership */
 417 #define IPV6_LEAVE_GROUP  13 /* ip6_mreq; leave a group membership */
 418 #define IPV6_PORTRANGE    14 /* int; range to choose for unspec port */
 419 #if defined(_NETBSD_SOURCE)
 420 #define ICMP6_FILTER    18 /* icmp6_filter; icmp6 filter */
 421 #endif
 422 /* RFC2292 options */
 423 #ifdef _KERNEL
 424 #define IPV6_2292PKTINFO  19 /* bool; send/recv if, src/dst addr */
 425 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
 426 #define IPV6_2292NEXTHOP  21 /* bool; next hop addr */
 427 #define IPV6_2292HOPOPTS  22 /* bool; hop-by-hop option */
 428 #define IPV6_2292DSTOPTS  23 /* bool; destinaion option */
 429 #define IPV6_2292RTHDR    24 /* bool; routing header */
 430 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
 431 #endif
 432 #define IPV6_CHECKSUM   26 /* int; checksum offset for raw socket */
 433 #define IPV6_V6ONLY   27 /* bool; make AF_INET6 sockets v6 only */
 434
 435 #if 1 /* IPSEC */
 436 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
 437 #endif
 438 #define IPV6_FAITH    29 /* bool; accept FAITH'ed connections */
 439
 440 /* new socket options introduced in RFC3542 */
 441 #define IPV6_RTHDRDSTOPTS       35 /* ip6_dest; send dst option before rthdr */
 442
 443 #define IPV6_RECVPKTINFO        36 /* bool; recv if, dst addr */
 444 #define IPV6_RECVHOPLIMIT       37 /* bool; recv hop limit */
 445 #define IPV6_RECVRTHDR          38 /* bool; recv routing header */
 446 #define IPV6_RECVHOPOPTS        39 /* bool; recv hop-by-hop option */
 447 #define IPV6_RECVDSTOPTS        40 /* bool; recv dst option after rthdr */
 448 #ifdef _KERNEL
 449 #define IPV6_RECVRTHDRDSTOPTS   41 /* bool; recv dst option before rthdr */
 450 #endif
 451 #define IPV6_USE_MIN_MTU  42 /* bool; send packets at the minimum MTU */
 452 #define IPV6_RECVPATHMTU  43 /* bool; notify an according MTU */
 453 #define IPV6_PATHMTU    44 /* mtuinfo; get the current path MTU (sopt),
 454               4 bytes int; MTU notification (cmsg) */
 455
 456 /* more new socket options introduced in RFC3542 */
 457 #define IPV6_PKTINFO    46 /* in6_pktinfo; send if, src addr */
 458 #define IPV6_HOPLIMIT   47 /* int; send hop limit */
 459 #define IPV6_NEXTHOP    48 /* sockaddr; next hop addr */
 460 #define IPV6_HOPOPTS    49 /* ip6_hbh; send hop-by-hop option */
 461 #define IPV6_DSTOPTS    50 /* ip6_dest; send dst option befor rthdr */
 462 #define IPV6_RTHDR    51 /* ip6_rthdr; send routing header */
 463
 464 #define IPV6_RECVTCLASS   57 /* bool; recv traffic class values */
 465 #ifdef _KERNEL
 466 #define IPV6_OTCLASS    58 /* u_int8_t; send traffic class value */
 467 #endif
 468
 469 #define IPV6_TCLASS   61 /* int; send traffic class value */
 470 #define IPV6_DONTFRAG   62 /* bool; disable IPv6 fragmentation */
 471 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 472
 473 #define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
 474 #define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
 475 #define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */
 476
 477 /*
 478  * Defaults and limits for options
 479  */
 480 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop  */
 481 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member  */
 482
 483 /*
 484  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 485  */
 486 struct ipv6_mreq {
 487   struct in6_addr ipv6mr_multiaddr;
 488   unsigned int  ipv6mr_interface;
 489 };
 490
 491 /*
 492  * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
 493  */
 494 struct in6_pktinfo {
 495   struct in6_addr ipi6_addr;  /* src/dst IPv6 address */
 496   unsigned int  ipi6_ifindex; /* send/recv interface index */
 497 };
 498
 499 /*
 500  * Control structure for IPV6_RECVPATHMTU socket option.
 501  */
 502 struct ip6_mtuinfo {
 503   struct sockaddr_in6 ip6m_addr;  /* or sockaddr_storage? */
 504   uint32_t ip6m_mtu;
 505 };
 506
 507 /*
 508  * Argument for IPV6_PORTRANGE:
 509  * - which range to search when port is unspecified at bind() or connect()
 510  */
 511 #define IPV6_PORTRANGE_DEFAULT  0 /* default range */
 512 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
 513 #define IPV6_PORTRANGE_LOW  2 /* "low" - vouchsafe security */
 514
 515 #if defined(_NETBSD_SOURCE)
 516 /*
 517  * Definitions for inet6 sysctl operations.
 518  *
 519  * Third level is protocol number.
 520  * Fourth level is desired variable within that protocol.
 521  */
 522 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
 523
 524 #define CTL_IPV6PROTO_NAMES { \
 525   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 526   { 0, 0 }, \
 527   { "tcp6", CTLTYPE_NODE }, \
 528   { 0, 0 }, \
 529   { 0, 0 }, \
 530   { 0, 0 }, \
 531   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 532   { 0, 0 }, \
 533   { 0, 0 }, \
 534   { "udp6", CTLTYPE_NODE }, \
 535   { 0, 0 }, \
 536   { 0, 0 }, \
 537   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 538   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 539   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 540   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 541   { 0, 0 }, \
 542   { "ip6", CTLTYPE_NODE }, \
 543   { 0, 0 }, \
 544   { 0, 0 }, \
 545   { 0, 0 }, \
 546   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 547   { 0, 0 }, \
 548   { "ipsec6", CTLTYPE_NODE }, \
 549   { 0, 0 }, \
 550   { 0, 0 }, \
 551   { 0, 0 }, \
 552   { 0, 0 }, \
 553   { 0, 0 }, \
 554   { 0, 0 }, \
 555   { "icmp6", CTLTYPE_NODE }, \
 556   { 0, 0 }, \
 557   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 558   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 559   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 560   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 561   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 562   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 563   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 564   { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 565   { 0, 0 }, \
 566   { 0, 0 }, \
 567   { 0, 0 }, \
 568   { "pim6", CTLTYPE_NODE }, \
 569 }
 570
 571 /*
 572  * Names for IP sysctl objects
 573  */
 574 #define IPV6CTL_FORWARDING  1 /* act as router */
 575 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
 576 #define IPV6CTL_DEFHLIM   3 /* default Hop-Limit */
 577 #ifdef notyet
 578 #define IPV6CTL_DEFMTU    4 /* default MTU */
 579 #endif
 580 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
 581 #define IPV6CTL_STATS   6 /* stats */
 582 #define IPV6CTL_MRTSTATS  7 /* multicast forwarding stats */
 583 #define IPV6CTL_MRTPROTO  8 /* multicast routing protocol */
 584 #define IPV6CTL_MAXFRAGPACKETS  9 /* max packets reassembly queue */
 585 #define IPV6CTL_SOURCECHECK 10  /* verify source route and intf */
 586 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
 587 #define IPV6CTL_ACCEPT_RTADV  12
 588 #define IPV6CTL_KEEPFAITH 13
 589 #define IPV6CTL_LOG_INTERVAL  14
 590 #define IPV6CTL_HDRNESTLIMIT  15
 591 #define IPV6CTL_DAD_COUNT 16
 592 #define IPV6CTL_AUTO_FLOWLABEL  17
 593 #define IPV6CTL_DEFMCASTHLIM  18
 594 #define IPV6CTL_GIF_HLIM  19  /* default HLIM for gif encap packet */
 595 #define IPV6CTL_KAME_VERSION  20
 596 #define IPV6CTL_USE_DEPRECATED  21  /* use deprecated addr (RFC2462 5.5.4) */
 597 #define IPV6CTL_RR_PRUNE  22  /* walk timer for router renumbering */
 598 /* 23: reserved */
 599 #define IPV6CTL_V6ONLY    24
 600 /* 25 to 27: reserved */
 601 #define IPV6CTL_ANONPORTMIN 28  /* minimum ephemeral port */
 602 #define IPV6CTL_ANONPORTMAX 29  /* maximum ephemeral port */
 603 #define IPV6CTL_LOWPORTMIN  30  /* minimum reserved port */
 604 #define IPV6CTL_LOWPORTMAX  31  /* maximum reserved port */
 605 /* 32 to 38: reserved */
 606 #define IPV6CTL_USE_DEFAULTZONE 39  /* use default scope zone */
 607 /* 40: reserved */
 608 #define IPV6CTL_MAXFRAGS  41  /* max fragments */
 609 #define IPV6CTL_IFQ   42  /* ip6intrq node */
 610 /* New entries should be added here from current IPV6CTL_MAXID value. */
 611 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 612 #define IPV6CTL_MAXID   43
 613
 614 #define IPV6CTL_NAMES { \
 615   { 0, 0 }, \
 616   { "forwarding", CTLTYPE_INT }, \
 617   { "redirect", CTLTYPE_INT }, \
 618   { "hlim", CTLTYPE_INT }, \
 619   { "mtu", CTLTYPE_INT }, \
 620   { "forwsrcrt", CTLTYPE_INT }, \
 621   { "stats", CTLTYPE_STRUCT }, \
 622   { 0, 0 }, \
 623   { "mrtproto", CTLTYPE_INT }, \
 624   { "maxfragpackets", CTLTYPE_INT }, \
 625   { "sourcecheck", CTLTYPE_INT }, \
 626   { "sourcecheck_logint", CTLTYPE_INT }, \
 627   { "accept_rtadv", CTLTYPE_INT }, \
 628   { "keepfaith", CTLTYPE_INT }, \
 629   { "log_interval", CTLTYPE_INT }, \
 630   { "hdrnestlimit", CTLTYPE_INT }, \
 631   { "dad_count", CTLTYPE_INT }, \
 632   { "auto_flowlabel", CTLTYPE_INT }, \
 633   { "defmcasthlim", CTLTYPE_INT }, \
 634   { "gifhlim", CTLTYPE_INT }, \
 635   { "kame_version", CTLTYPE_STRING }, \
 636   { "use_deprecated", CTLTYPE_INT }, \
 637   { "rr_prune", CTLTYPE_INT }, \
 638   { 0, 0 }, \
 639   { "v6only", CTLTYPE_INT }, \
 640   { 0, 0 }, \
 641   { 0, 0 }, \
 642   { 0, 0 }, \
 643   { "anonportmin", CTLTYPE_INT }, \
 644   { "anonportmax", CTLTYPE_INT }, \
 645   { "lowportmin", CTLTYPE_INT }, \
 646   { "lowportmax", CTLTYPE_INT }, \
 647   { 0, 0 }, \
 648   { 0, 0 }, \
 649   { 0, 0 }, \
 650   { 0, 0 }, \
 651   { 0, 0 }, \
 652   { 0, 0 }, \
 653   { 0, 0 }, \
 654   { 0, 0 }, \
 655   { 0, 0 }, \
 656   { "maxfrags", CTLTYPE_INT }, \
 657   { "ifq", CTLTYPE_NODE }, \
 658 }
 659
 660 #endif /* _NETBSD_SOURCE */
 661
 662 #ifdef _KERNEL
 663 struct cmsghdr;
 664
 665 /*
 666  * in6_cksum_phdr:
 667  *
 668  *  Compute significant parts of the IPv6 checksum pseudo-header
 669  *  for use in a delayed TCP/UDP checksum calculation.
 670  *
 671  *  Args:
 672  *
 673  *    src   Source IPv6 address
 674  *    dst   Destination IPv6 address
 675  *    len   htonl(proto-hdr-len)
 676  *    nxt   htonl(next-proto-number)
 677  *
 678  *  NOTE: We expect the src and dst addresses to be 16-bit
 679  *  aligned!
 680  */
 681 static __inline u_int16_t __attribute__((__unused__))
 682 in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst,
 683     u_int32_t len, u_int32_t nxt)
 684 {
 685   u_int32_t sum = 0;
 686   const u_int16_t *w;
 687
 688   /*LINTED*/
 689   w = (const u_int16_t *) src;
 690   sum += w[0];
 691   if (!IN6_IS_SCOPE_LINKLOCAL(src))
 692     sum += w[1];
 693   sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
 694   sum += w[6]; sum += w[7];
 695
 696   /*LINTED*/
 697   w = (const u_int16_t *) dst;
 698   sum += w[0];
 699   if (!IN6_IS_SCOPE_LINKLOCAL(dst))
 700     sum += w[1];
 701   sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
 702   sum += w[6]; sum += w[7];
 703
 704   sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/);
 705
 706   sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/);
 707
 708   sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/);
 709
 710   if (sum > 0xffff)
 711     sum -= 0xffff;
 712
 713   return (sum);
 714 }
 715
 716 struct mbuf;
 717 struct ifnet;
 718 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
 719 void  in6_delayed_cksum __P((struct mbuf *));
 720 int in6_localaddr __P((struct in6_addr *));
 721 int in6_addrscope __P((struct in6_addr *));
 722 struct  in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
 723 extern void in6_if_up __P((struct ifnet *));
 724 #ifndef __FreeBSD__
 725 extern int in6_src_sysctl __P((void *, size_t *, void *, size_t));
 726 #endif
 727 extern void addrsel_policy_init __P((void));
 728 extern  u_char  ip6_protox[];
 729
 730 #define satosin6(sa)  ((struct sockaddr_in6 *)(sa))
 731 #define sin6tosa(sin6)  ((struct sockaddr *)(sin6))
 732 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
 733 #endif /* _KERNEL */
 734
 735 #if defined(_NETBSD_SOURCE)
 736
 737 #include <machine/ansi.h>
 738
 739 #ifdef  _BSD_SIZE_T_
 740 typedef _BSD_SIZE_T_    size_t;
 741 #define _SIZE_T
 742 #undef  _BSD_SIZE_T_
 743 #endif
 744
 745 #include <sys/EfiCdefs.h>
 746
 747 __BEGIN_DECLS
 748 struct cmsghdr;
 749
 750 extern int inet6_option_space (int);
 751 extern int inet6_option_init (void *, struct cmsghdr **, int);
 752 extern int inet6_option_append (struct cmsghdr *, const uint8_t *,
 753   int, int);
 754 extern uint8_t *inet6_option_alloc (struct cmsghdr *, int, int, int);
 755 extern int inet6_option_next (const struct cmsghdr *, uint8_t **);
 756 extern int inet6_option_find (const struct cmsghdr *, uint8_t **, int);
 757
 758 extern size_t inet6_rthdr_space (int, int);
 759 extern struct cmsghdr *inet6_rthdr_init (void *, int);
 760 extern int inet6_rthdr_add (struct cmsghdr *, const struct in6_addr *,
 761     unsigned int);
 762 extern int inet6_rthdr_lasthop (struct cmsghdr *, unsigned int);
 763 #if 0 /* not implemented yet */
 764 extern int inet6_rthdr_reverse (const struct cmsghdr *, struct cmsghdr *);
 765 #endif
 766 extern int inet6_rthdr_segments (const struct cmsghdr *);
 767 extern struct in6_addr *inet6_rthdr_getaddr (struct cmsghdr *, int);
 768 extern int inet6_rthdr_getflags (const struct cmsghdr *, int);
 769
 770 extern int inet6_opt_init (void *, socklen_t);
 771 extern int inet6_opt_append (void *, socklen_t, int, uint8_t,
 772     socklen_t, uint8_t, void **);
 773 extern int inet6_opt_finish (void *, socklen_t, int);
 774 extern int inet6_opt_set_val (void *, int, void *, socklen_t);
 775
 776 extern int inet6_opt_next (void *, socklen_t, int, uint8_t *,
 777     socklen_t *, void **);
 778 extern int inet6_opt_find (void *, socklen_t, int, uint8_t,
 779     socklen_t *, void **);
 780 extern int inet6_opt_get_val (void *, int, void *, socklen_t);
 781 extern socklen_t inet6_rth_space (int, int);
 782 extern void *inet6_rth_init (void *, socklen_t, int, int);
 783 extern int inet6_rth_add (void *, const struct in6_addr *);
 784 extern int inet6_rth_reverse (const void *, void *);
 785 extern int inet6_rth_segments (const void *);
 786 extern struct in6_addr *inet6_rth_getaddr (const void *, int);
 787 __END_DECLS
 788 #endif /* _NETBSD_SOURCE */
 789
 790 #endif /* !_NETINET6_IN6_H_ */