bsd/netinet6/in6.h

   1 /*      $KAME: in6.h,v 1.40 2000/03/25 07:23:42 sumikawa Exp $  */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Copyright (c) 1982, 1986, 1990, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)in.h        8.3 (Berkeley) 1/3/94
  65  */
  66
  67 #ifndef __KAME_NETINET_IN_H_INCLUDED_
  68 #error "do not include netinet6/in6.h directly, include netinet/in.h"
  69 #endif
  70
  71 #ifndef _NETINET6_IN6_H_
  72 #define _NETINET6_IN6_H_
  73
  74 #if !defined(_XOPEN_SOURCE)
  75 #include <sys/queue.h>
  76 #endif
  77
  78 /*
  79  * Identification of the network protocol stack
  80  */
  81 #define __KAME__
  82 #define __KAME_VERSION          "STABLE 20000425"
  83
  84 /*
  85  * Local port number conventions:
  86  *
  87  * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
  88  * unless a kernel is compiled with IPNOPRIVPORTS defined.
  89  *
  90  * When a user does a bind(2) or connect(2) with a port number of zero,
  91  * a non-conflicting local port address is chosen.
  92  *
  93  * The default range is IPPORT_ANONMIX to IPPORT_ANONMAX, although
  94  * that is settable by sysctl(3); net.inet.ip.anonportmin and
  95  * net.inet.ip.anonportmax respectively.
  96  *
  97  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
  98  * default assignment range.
  99  *
 100  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 101  *
 102  * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
 103  * and exists only for FreeBSD compatibility purposes.
 104  *
 105  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 106  * that is (by convention) restricted to privileged processes.
 107  * This convention is based on "vouchsafe" principles only.
 108  * It is only secure if you trust the remote host to restrict these ports.
 109  * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
 110  */
 111
 112 #define IPV6PORT_RESERVED       1024
 113 #define IPV6PORT_ANONMIN        49152
 114 #define IPV6PORT_ANONMAX        65535
 115 #define IPV6PORT_RESERVEDMIN    600
 116 #define IPV6PORT_RESERVEDMAX    (IPV6PORT_RESERVED-1)
 117
 118 /*
 119  * IPv6 address
 120  */
 121 struct in6_addr {
 122         union {
 123                 u_int8_t   __u6_addr8[16];
 124                 u_int16_t  __u6_addr16[8];
 125                 u_int32_t  __u6_addr32[4];
 126         } __u6_addr;                    /* 128-bit IP6 address */
 127 };
 128
 129 #define s6_addr   __u6_addr.__u6_addr8
 130 #ifdef KERNEL   /*XXX nonstandard*/
 131 #define s6_addr8  __u6_addr.__u6_addr8
 132 #define s6_addr16 __u6_addr.__u6_addr16
 133 #define s6_addr32 __u6_addr.__u6_addr32
 134 #endif
 135
 136 #define INET6_ADDRSTRLEN        46
 137
 138 /*
 139  * Socket address for IPv6
 140  */
 141 #if !defined(_XOPEN_SOURCE)
 142 #define SIN6_LEN
 143 #endif
 144 struct sockaddr_in6 {
 145         u_int8_t        sin6_len;       /* length of this struct(sa_family_t)*/
 146         u_int8_t        sin6_family;    /* AF_INET6 (sa_family_t) */
 147         u_int16_t       sin6_port;      /* Transport layer port # (in_port_t)*/
 148         u_int32_t       sin6_flowinfo;  /* IP6 flow information */
 149         struct in6_addr sin6_addr;      /* IP6 address */
 150         u_int32_t       sin6_scope_id;  /* intface scope id */
 151 };
 152
 153 /*
 154  * Local definition for masks
 155  */
 156 #ifdef KERNEL   /*XXX nonstandard*/
 157 #define IN6MASK0        {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
 158 #define IN6MASK32       {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
 159                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 160 #define IN6MASK64       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 161                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 162 #define IN6MASK96       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 163                             0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 164 #define IN6MASK128      {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 165                             0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
 166 #endif
 167
 168 #ifdef KERNEL
 169 extern const struct in6_addr in6mask0;
 170 extern const struct in6_addr in6mask32;
 171 extern const struct in6_addr in6mask64;
 172 extern const struct in6_addr in6mask96;
 173 extern const struct in6_addr in6mask128;
 174 #endif /* KERNEL */
 175
 176 /*
 177  * Macros started with IPV6_ADDR is KAME local
 178  */
 179 #ifdef KERNEL   /*XXX nonstandard*/
 180 #if BYTE_ORDER == BIG_ENDIAN
 181 #define IPV6_ADDR_INT32_ONE     1
 182 #define IPV6_ADDR_INT32_TWO     2
 183 #define IPV6_ADDR_INT32_MNL     0xff010000
 184 #define IPV6_ADDR_INT32_MLL     0xff020000
 185 #define IPV6_ADDR_INT32_SMP     0x0000ffff
 186 #define IPV6_ADDR_INT16_ULL     0xfe80
 187 #define IPV6_ADDR_INT16_USL     0xfec0
 188 #define IPV6_ADDR_INT16_MLL     0xff02
 189 #elif BYTE_ORDER == LITTLE_ENDIAN
 190 #define IPV6_ADDR_INT32_ONE     0x01000000
 191 #define IPV6_ADDR_INT32_TWO     0x02000000
 192 #define IPV6_ADDR_INT32_MNL     0x000001ff
 193 #define IPV6_ADDR_INT32_MLL     0x000002ff
 194 #define IPV6_ADDR_INT32_SMP     0xffff0000
 195 #define IPV6_ADDR_INT16_ULL     0x80fe
 196 #define IPV6_ADDR_INT16_USL     0xc0fe
 197 #define IPV6_ADDR_INT16_MLL     0x02ff
 198 #endif
 199 #endif
 200
 201 /*
 202  * Definition of some useful macros to handle IP6 addresses
 203  */
 204 #define IN6ADDR_ANY_INIT \
 205         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 206             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 207 #define IN6ADDR_LOOPBACK_INIT \
 208         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 209             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 210 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
 211         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 212             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 213 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
 214         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 215             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 216 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
 217         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 218             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
 219
 220 #ifdef KERNEL
 221 extern const struct in6_addr in6addr_any;
 222 extern const struct in6_addr in6addr_loopback;
 223 extern const struct in6_addr in6addr_nodelocal_allnodes;
 224 extern const struct in6_addr in6addr_linklocal_allnodes;
 225 extern const struct in6_addr in6addr_linklocal_allrouters;
 226 #endif
 227
 228 /*
 229  * Equality
 230  * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
 231  * does not supply memcmp().  For userland memcmp() is preferred as it is
 232  * in ANSI standard.
 233  */
 234 #ifdef KERNEL
 235 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
 236         (bcmp((a), (b), sizeof(struct in6_addr)) == 0)
 237 #else
 238 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
 239         (memcmp((a), (b), sizeof(struct in6_addr)) == 0)
 240 #endif
 241
 242 /*
 243  * Unspecified
 244  */
 245 #define IN6_IS_ADDR_UNSPECIFIED(a)      \
 246         ((*(u_int32_t *)(&(a)->s6_addr[0]) == 0) &&     \
 247          (*(u_int32_t *)(&(a)->s6_addr[4]) == 0) &&     \
 248          (*(u_int32_t *)(&(a)->s6_addr[8]) == 0) &&     \
 249          (*(u_int32_t *)(&(a)->s6_addr[12]) == 0))
 250
 251 /*
 252  * Loopback
 253  */
 254 #define IN6_IS_ADDR_LOOPBACK(a)         \
 255         ((*(u_int32_t *)(&(a)->s6_addr[0]) == 0) &&     \
 256          (*(u_int32_t *)(&(a)->s6_addr[4]) == 0) &&     \
 257          (*(u_int32_t *)(&(a)->s6_addr[8]) == 0) &&     \
 258          (*(u_int32_t *)(&(a)->s6_addr[12]) == ntohl(1)))
 259
 260 /*
 261  * IPv4 compatible
 262  */
 263 #define IN6_IS_ADDR_V4COMPAT(a)         \
 264         ((*(u_int32_t *)(&(a)->s6_addr[0]) == 0) &&     \
 265          (*(u_int32_t *)(&(a)->s6_addr[4]) == 0) &&     \
 266          (*(u_int32_t *)(&(a)->s6_addr[8]) == 0) &&     \
 267          (*(u_int32_t *)(&(a)->s6_addr[12]) != 0) &&    \
 268          (*(u_int32_t *)(&(a)->s6_addr[12]) != ntohl(1)))
 269
 270 /*
 271  * Mapped
 272  */
 273 #define IN6_IS_ADDR_V4MAPPED(a)               \
 274         ((*(u_int32_t *)(&(a)->s6_addr[0]) == 0) &&     \
 275          (*(u_int32_t *)(&(a)->s6_addr[4]) == 0) &&     \
 276          (*(u_int32_t *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
 277
 278 /*
 279  * KAME Scope Values
 280  */
 281
 282 #ifdef KERNEL   /*XXX nonstandard*/
 283 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
 284 #define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
 285 #define IPV6_ADDR_SCOPE_SITELOCAL       0x05
 286 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08    /* just used in this file */
 287 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
 288 #else
 289 #define __IPV6_ADDR_SCOPE_NODELOCAL     0x01
 290 #define __IPV6_ADDR_SCOPE_LINKLOCAL     0x02
 291 #define __IPV6_ADDR_SCOPE_SITELOCAL     0x05
 292 #define __IPV6_ADDR_SCOPE_ORGLOCAL      0x08    /* just used in this file */
 293 #define __IPV6_ADDR_SCOPE_GLOBAL        0x0e
 294 #endif
 295
 296 /*
 297  * Unicast Scope
 298  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 299  */
 300 #define IN6_IS_ADDR_LINKLOCAL(a)        \
 301         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
 302 #define IN6_IS_ADDR_SITELOCAL(a)        \
 303         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
 304
 305 /*
 306  * Multicast
 307  */
 308 #define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)
 309
 310 #ifdef KERNEL   /*XXX nonstandard*/
 311 #define IPV6_ADDR_MC_SCOPE(a)           ((a)->s6_addr[1] & 0x0f)
 312 #else
 313 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 314 #endif
 315
 316 /*
 317  * Multicast Scope
 318  */
 319 #ifdef KERNEL   /*refers nonstandard items */
 320 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 321         (IN6_IS_ADDR_MULTICAST(a) &&    \
 322          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
 323 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 324         (IN6_IS_ADDR_MULTICAST(a) &&    \
 325          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
 326 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 327         (IN6_IS_ADDR_MULTICAST(a) &&    \
 328          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
 329 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 330         (IN6_IS_ADDR_MULTICAST(a) &&    \
 331          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
 332 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 333         (IN6_IS_ADDR_MULTICAST(a) &&    \
 334          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
 335 #else
 336 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 337         (IN6_IS_ADDR_MULTICAST(a) &&    \
 338          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
 339 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 340         (IN6_IS_ADDR_MULTICAST(a) &&    \
 341          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
 342 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 343         (IN6_IS_ADDR_MULTICAST(a) &&    \
 344          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
 345 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 346         (IN6_IS_ADDR_MULTICAST(a) &&    \
 347          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
 348 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 349         (IN6_IS_ADDR_MULTICAST(a) &&    \
 350          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
 351 #endif
 352
 353 /*
 354  * Wildcard Socket
 355  */
 356 #if 0   /*pre-RFC2553*/
 357 #define IN6_IS_ADDR_ANY(a)      IN6_IS_ADDR_UNSPECIFIED(a)
 358 #endif
 359
 360 /*
 361  * KAME Scope
 362  */
 363 #ifdef KERNEL   /*nonstandard*/
 364 #define IN6_IS_SCOPE_LINKLOCAL(a)       \
 365         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 366          (IN6_IS_ADDR_MC_LINKLOCAL(a)))
 367 #endif
 368
 369 /*
 370  * IP6 route structure
 371  */
 372 #if !defined(_XOPEN_SOURCE)
 373 struct route_in6 {
 374         struct  rtentry *ro_rt;
 375         struct  sockaddr_in6 ro_dst;
 376 };
 377 #endif
 378
 379 /*
 380  * Options for use with [gs]etsockopt at the IPV6 level.
 381  * First word of comment is data type; bool is stored in int.
 382  */
 383 /* no hdrincl */
 384 #if 0 /* the followings are relic in IPv4 and hence are disabled */
 385 #define IPV6_OPTIONS            1  /* buf/ip6_opts; set/get IP6 options */
 386 #define IPV6_RECVOPTS           5  /* bool; receive all IP6 opts w/dgram */
 387 #define IPV6_RECVRETOPTS        6  /* bool; receive IP6 opts for response */
 388 #define IPV6_RECVDSTADDR        7  /* bool; receive IP6 dst addr w/dgram */
 389 #define IPV6_RETOPTS            8  /* ip6_opts; set/get IP6 options */
 390 #endif
 391 #define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
 392 #define IPV6_UNICAST_HOPS       4  /* int; IP6 hops */
 393 #define IPV6_MULTICAST_IF       9  /* u_char; set/get IP6 multicast i/f  */
 394 #define IPV6_MULTICAST_HOPS     10 /* u_char; set/get IP6 multicast hops */
 395 #define IPV6_MULTICAST_LOOP     11 /* u_char; set/get IP6 multicast loopback */
 396 #define IPV6_JOIN_GROUP         12 /* ip6_mreq; join a group membership */
 397 #define IPV6_LEAVE_GROUP        13 /* ip6_mreq; leave a group membership */
 398 #define IPV6_PORTRANGE          14 /* int; range to choose for unspec port */
 399 #define ICMP6_FILTER            18 /* icmp6_filter; icmp6 filter */
 400 #define IPV6_PKTINFO            19 /* in6_pktinfo; send if, src addr */
 401 #define IPV6_HOPLIMIT           20 /* int; send hop limit */
 402 #define IPV6_NEXTHOP            21 /* sockaddr; next hop addr */
 403 #define IPV6_HOPOPTS            22 /* ip6_hbh; send hop-by-hop option */
 404 #define IPV6_DSTOPTS            23 /* ip6_dest; send dst option befor rthdr */
 405 #define IPV6_RTHDR              24 /* ip6_rthdr; send routing header */
 406 #define IPV6_PKTOPTIONS         25 /* buf/cmsghdr; set/get IPv6 options */
 407                                    /* obsoleted by 2292bis */
 408 #define IPV6_CHECKSUM           26 /* int; checksum offset for raw socket */
 409 #define IPV6_BINDV6ONLY         27 /* bool; only bind INET6 at null bind */
 410
 411 #if 1 /*IPSEC*/
 412 #define IPV6_IPSEC_POLICY       28 /* struct; get/set security policy */
 413 #endif
 414 #define IPV6_FAITH              29 /* bool; accept FAITH'ed connections */
 415
 416 #if 1 /*IPV6FIREWALL*/
 417 #define IPV6_FW_ADD             30 /* add a firewall rule to chain */
 418 #define IPV6_FW_DEL             31 /* delete a firewall rule from chain */
 419 #define IPV6_FW_FLUSH           32 /* flush firewall rule chain */
 420 #define IPV6_FW_ZERO            33 /* clear single/all firewall counter(s) */
 421 #define IPV6_FW_GET             34 /* get entire firewall rule chain */
 422 #endif
 423
 424 /* new socket options introduced in RFC2292bis */
 425 #define IPV6_RTHDRDSTOPTS       35 /* ip6_dest; send dst option before rthdr */
 426
 427 #define IPV6_RECVPKTINFO        36 /* bool; recv if, dst addr */
 428 #define IPV6_RECVHOPLIMIT       37 /* bool; recv hop limit */
 429 #define IPV6_RECVRTHDR          38 /* bool; recv routing header */
 430 #define IPV6_RECVHOPOPTS        39 /* bool; recv hop-by-hop option */
 431 #define IPV6_RECVDSTOPTS        40 /* bool; recv dst option after rthdr */
 432 #define IPV6_RECVRTHDRDSTOPTS   41 /* bool; recv dst option before rthdr */
 433
 434 #define IPV6_USE_MIN_MTU        42 /* bool; send packets at the minimum MTU */
 435 #define IPV6_RECVPATHMTU        43 /* bool; notify an according MTU */
 436
 437 /* the followings are used as cmsg type only */
 438 #define IPV6_PATHMTU            44 /* 4 bytes int; MTU notification */
 439 #define IPV6_REACHCONF          45 /* no data; ND reachability confirm */
 440
 441 #define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
 442 #define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
 443 #define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */
 444
 445 /*
 446  * Defaults and limits for options
 447  */
 448 #define IPV6_DEFAULT_MULTICAST_HOPS 1   /* normally limit m'casts to 1 hop  */
 449 #define IPV6_DEFAULT_MULTICAST_LOOP 1   /* normally hear sends if a member  */
 450
 451 /*
 452  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 453  */
 454 struct ipv6_mreq {
 455         struct in6_addr ipv6mr_multiaddr;
 456         u_int           ipv6mr_interface;
 457 };
 458
 459 /*
 460  * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
 461  */
 462 struct in6_pktinfo {
 463         struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
 464         u_int ipi6_ifindex;             /* send/recv interface index */
 465 };
 466
 467 /*
 468  * Argument for IPV6_PORTRANGE:
 469  * - which range to search when port is unspecified at bind() or connect()
 470  */
 471 #define IPV6_PORTRANGE_DEFAULT  0       /* default range */
 472 #define IPV6_PORTRANGE_HIGH     1       /* "high" - request firewall bypass */
 473 #define IPV6_PORTRANGE_LOW      2       /* "low" - vouchsafe security */
 474
 475 #if !defined(_XOPEN_SOURCE)
 476 /*
 477  * Definitions for inet6 sysctl operations.
 478  *
 479  * Third level is protocol number.
 480  * Fourth level is desired variable within that protocol.
 481  */
 482 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1)       /* don't list to IPV6PROTO_MAX */
 483
 484 #define CTL_IPV6PROTO_NAMES { \
 485         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 486         { 0, 0 }, \
 487         { "tcp6", CTLTYPE_NODE }, \
 488         { 0, 0 }, \
 489         { 0, 0 }, \
 490         { 0, 0 }, \
 491         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 492         { 0, 0 }, \
 493         { 0, 0 }, \
 494         { "udp6", CTLTYPE_NODE }, \
 495         { 0, 0 }, \
 496         { 0, 0 }, \
 497         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 498         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 499         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 500         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 501         { 0, 0 }, \
 502         { "ip6", CTLTYPE_NODE }, \
 503         { 0, 0 }, \
 504         { 0, 0 }, \
 505         { 0, 0 }, \
 506         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 507         { 0, 0 }, \
 508         { "ipsec6", CTLTYPE_NODE }, \
 509         { 0, 0 }, \
 510         { 0, 0 }, \
 511         { 0, 0 }, \
 512         { 0, 0 }, \
 513         { 0, 0 }, \
 514         { 0, 0 }, \
 515         { "icmp6", CTLTYPE_NODE }, \
 516         { 0, 0 }, \
 517         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 518         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 519         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 520         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 521         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 522         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 523         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 524         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 525         { 0, 0 }, \
 526         { 0, 0 }, \
 527         { 0, 0 }, \
 528         { "pim6", CTLTYPE_NODE }, \
 529 }
 530
 531 /*
 532  * Names for IP sysctl objects
 533  */
 534 #define IPV6CTL_FORWARDING      1       /* act as router */
 535 #define IPV6CTL_SENDREDIRECTS   2       /* may send redirects when forwarding*/
 536 #define IPV6CTL_DEFHLIM         3       /* default Hop-Limit */
 537 #ifdef notyet
 538 #define IPV6CTL_DEFMTU          4       /* default MTU */
 539 #endif
 540 #define IPV6CTL_FORWSRCRT       5       /* forward source-routed dgrams */
 541 #define IPV6CTL_STATS           6       /* stats */
 542 #define IPV6CTL_MRTSTATS        7       /* multicast forwarding stats */
 543 #define IPV6CTL_MRTPROTO        8       /* multicast routing protocol */
 544 #define IPV6CTL_MAXFRAGPACKETS  9       /* max packets reassembly queue */
 545 #define IPV6CTL_SOURCECHECK     10      /* verify source route and intf */
 546 #define IPV6CTL_SOURCECHECK_LOGINT 11   /* minimume logging interval */
 547 #define IPV6CTL_ACCEPT_RTADV    12
 548 #define IPV6CTL_KEEPFAITH       13
 549 #define IPV6CTL_LOG_INTERVAL    14
 550 #define IPV6CTL_HDRNESTLIMIT    15
 551 #define IPV6CTL_DAD_COUNT       16
 552 #define IPV6CTL_AUTO_FLOWLABEL  17
 553 #define IPV6CTL_DEFMCASTHLIM    18
 554 #define IPV6CTL_GIF_HLIM        19      /* default HLIM for gif encap packet */
 555 #define IPV6CTL_KAME_VERSION    20
 556 #define IPV6CTL_USE_DEPRECATED  21      /* use deprecated addr (RFC2462 5.5.4) */
 557 #define IPV6CTL_RR_PRUNE        22      /* walk timer for router renumbering */
 558 #if MAPPED_ADDR_ENABLED
 559 #define IPV6CTL_MAPPED_ADDR     23
 560 #endif /* MAPPED_ADDR_ENABLED */
 561 /* New entries should be added here from current IPV6CTL_MAXID value. */
 562 #define IPV6CTL_MAXID           24
 563
 564 #if MAPPED_ADDR_ENABLED
 565 #define IPV6CTL_NAMES_MAPPED_ADDR       "mapped_addr"
 566 #define IPV6CTL_TYPE_MAPPED_ADDR        CTLTYPE_INT
 567 #define IPV6CTL_VARS_MAPPED_ADDR        &ip6_mapped_addr_on
 568 #else  /* MAPPED_ADDR_ENABLED */
 569 #define IPV6CTL_NAMES_MAPPED_ADDR       0
 570 #define IPV6CTL_TYPE_MAPPED_ADDR        0
 571 #define IPV6CTL_VARS_MAPPED_ADDR        0
 572 #endif /* MAPPED_ADDR_ENABLED */
 573
 574 #if IPV6CTL_BINDV6ONLY
 575 #define IPV6CTL_NAMES_BINDV6ONLY        "bindv6only"
 576 #define IPV6CTL_TYPE_BINDV6ONLY         CTLTYPE_INT
 577 #define IPV6CTL_VARS_BINDV6ONLY         &ip6_bindv6only
 578 #else
 579 #define IPV6CTL_NAMES_BINDV6ONLY        0
 580 #define IPV6CTL_TYPE_BINDV6ONLY 0
 581 #define IPV6CTL_VARS_BINDV6ONLY 0
 582 #endif
 583
 584 #define IPV6CTL_NAMES { \
 585         { 0, 0 }, \
 586         { "forwarding", CTLTYPE_INT }, \
 587         { "redirect", CTLTYPE_INT }, \
 588         { "hlim", CTLTYPE_INT }, \
 589         { "mtu", CTLTYPE_INT }, \
 590         { "forwsrcrt", CTLTYPE_INT }, \
 591         { 0, 0 }, \
 592         { 0, 0 }, \
 593         { "mrtproto", CTLTYPE_INT }, \
 594         { "maxfragpackets", CTLTYPE_INT }, \
 595         { "sourcecheck", CTLTYPE_INT }, \
 596         { "sourcecheck_logint", CTLTYPE_INT }, \
 597         { "accept_rtadv", CTLTYPE_INT }, \
 598         { "keepfaith", CTLTYPE_INT }, \
 599         { "log_interval", CTLTYPE_INT }, \
 600         { "hdrnestlimit", CTLTYPE_INT }, \
 601         { "dad_count", CTLTYPE_INT }, \
 602         { "auto_flowlabel", CTLTYPE_INT }, \
 603         { "defmcasthlim", CTLTYPE_INT }, \
 604         { "gifhlim", CTLTYPE_INT }, \
 605         { "kame_version", CTLTYPE_STRING }, \
 606         { "use_deprecated", CTLTYPE_INT }, \
 607         { "rr_prune", CTLTYPE_INT }, \
 608         { IPV6CTL_NAMES_MAPPED_ADDR, IPV6CTL_TYPE_MAPPED_ADDR }, \
 609         { IPV6CTL_NAMES_BINDV6ONLY, IPV6CTL_TYPE_BINDV6ONLY }, \
 610 }
 611
 612 #ifdef __bsdi__
 613 #define IPV6CTL_VARS { \
 614         0, \
 615         &ip6_forwarding, \
 616         &ip6_sendredirects, \
 617         &ip6_defhlim, \
 618         0, \
 619         &ip6_forward_srcrt, \
 620         0, \
 621         0, \
 622         0, \
 623         &ip6_maxfragpackets, \
 624         &ip6_sourcecheck, \
 625         &ip6_sourcecheck_interval, \
 626         &ip6_accept_rtadv, \
 627         &ip6_keepfaith, \
 628         &ip6_log_interval, \
 629         &ip6_hdrnestlimit, \
 630         &ip6_dad_count, \
 631         &ip6_auto_flowlabel, \
 632         &ip6_defmcasthlim, \
 633         &ip6_gif_hlim, \
 634         0, \
 635         &ip6_use_deprecated, \
 636         &ip6_rr_prune, \
 637         IPV6CTL_VARS_MAPPED_ADDR, \
 638         IPV6CTL_VARS_BINDV6ONLY, \
 639 }
 640 #endif
 641 #endif /* !_XOPEN_SOURCE */
 642
 643 #ifdef KERNEL
 644 struct cmsghdr;
 645
 646 int     in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
 647 int     in6_localaddr __P((struct in6_addr *));
 648 int     in6_addrscope __P((struct in6_addr *));
 649 struct  in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *));
 650 struct  in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
 651 extern void in6_if_up __P((struct ifnet *));
 652 #if MAPPED_ADDR_ENABLED
 653 struct sockaddr;
 654
 655 void    in6_sin6_2_sin __P((struct sockaddr_in *sin,
 656                             struct sockaddr_in6 *sin6));
 657 void    in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
 658                                  struct sockaddr_in6 *sin6));
 659 void    in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
 660 void    in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
 661 #endif /* MAPPED_ADDR_ENABLED */
 662
 663 #define satosin6(sa)    ((struct sockaddr_in6 *)(sa))
 664 #define sin6tosa(sin6)  ((struct sockaddr *)(sin6))
 665 #define ifatoia6(ifa)   ((struct in6_ifaddr *)(ifa))
 666 #endif /* KERNEL */
 667
 668 __BEGIN_DECLS
 669 struct cmsghdr;
 670
 671 extern int inet6_option_space __P((int));
 672 extern int inet6_option_init __P((void *, struct cmsghdr **, int));
 673 extern int inet6_option_append __P((struct cmsghdr *, const u_int8_t *,
 674         int, int));
 675 extern u_int8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
 676 extern int inet6_option_next __P((const struct cmsghdr *, u_int8_t **));
 677 extern int inet6_option_find __P((const struct cmsghdr *, u_int8_t **, int));
 678
 679 extern size_t inet6_rthdr_space __P((int, int));
 680 extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
 681 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
 682                 unsigned int));
 683 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
 684 #if 0 /* not implemented yet */
 685 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
 686 #endif
 687 extern int inet6_rthdr_segments __P((const struct cmsghdr *));
 688 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
 689 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
 690
 691 extern int inet6_opt_init __P((void *, size_t));
 692 extern int inet6_opt_append __P((void *, size_t, int, u_int8_t,
 693                                  size_t, u_int8_t, void **));
 694 extern int inet6_opt_finish __P((void *, size_t, int));
 695 extern int inet6_opt_set_val __P((void *, size_t, void *, int));
 696
 697 extern int inet6_opt_next __P((void *, size_t, int, u_int8_t *,
 698                                size_t *, void **));
 699 extern int inet6_opt_find __P((void *, size_t, int, u_int8_t,
 700                           size_t *, void **));
 701 extern int inet6_opt_get_val __P((void *, size_t, void *, int));
 702 extern size_t inet6_rth_space __P((int, int));
 703 extern void *inet6_rth_init __P((void *, int, int, int));
 704 extern int inet6_rth_add __P((void *, const struct in6_addr *));
 705 extern int inet6_rth_reverse __P((const void *, void *));
 706 extern int inet6_rth_segments __P((const void *));
 707 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
 708 __END_DECLS
 709
 710 #endif /* !_NETINET6_IN6_H_ */