native_client_sdk/src/libraries/third_party/newlib-extras/netinet6/in6.h

   1 /*      $FreeBSD: src/sys/netinet6/in6.h,v 1.19 2002/04/19 04:46:22 suz Exp $   */
   2 /*      $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $    */
   3
   4 /*
   5  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Copyright (c) 1982, 1986, 1990, 1993
  35  *      The Regents of the University of California.  All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  * 4. Neither the name of the University nor the names of its contributors
  46  *    may be used to endorse or promote products derived from this software
  47  *    without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  *
  61  *      @(#)in.h        8.3 (Berkeley) 1/3/94
  62  */
  63
  64 #ifndef __KAME_NETINET_IN_H_INCLUDED_
  65 #error "do not include netinet6/in6.h directly, include netinet/in.h.  see RFC2553"
  66 #endif
  67
  68 #ifndef _NETINET6_IN6_H_
  69 #define _NETINET6_IN6_H_
  70
  71 #include <sys/types.h>
  72
  73 /*
  74  * Identification of the network protocol stack
  75  * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
  76  * has the table of implementation/integration differences.
  77  */
  78 #define __KAME__
  79 #define __KAME_VERSION          "20010528/FreeBSD"
  80
  81 /*
  82  * Local port number conventions:
  83  *
  84  * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
  85  * unless a kernel is compiled with IPNOPRIVPORTS defined.
  86  *
  87  * When a user does a bind(2) or connect(2) with a port number of zero,
  88  * a non-conflicting local port address is chosen.
  89  *
  90  * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
  91  * that is settable by sysctl(3); net.inet.ip.anonportmin and
  92  * net.inet.ip.anonportmax respectively.
  93  *
  94  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
  95  * default assignment range.
  96  *
  97  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
  98  *
  99  * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
 100  * and exists only for FreeBSD compatibility purposes.
 101  *
 102  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 103  * that is (by convention) restricted to privileged processes.
 104  * This convention is based on "vouchsafe" principles only.
 105  * It is only secure if you trust the remote host to restrict these ports.
 106  * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
 107  */
 108
 109 #define IPV6PORT_RESERVED       1024
 110 #define IPV6PORT_ANONMIN        49152
 111 #define IPV6PORT_ANONMAX        65535
 112 #define IPV6PORT_RESERVEDMIN    600
 113 #define IPV6PORT_RESERVEDMAX    (IPV6PORT_RESERVED-1)
 114
 115 /*
 116  * IPv6 address
 117  */
 118 struct in6_addr {
 119         union {
 120                 uint8_t   __u6_addr8[16];
 121                 uint16_t  __u6_addr16[8];
 122                 uint32_t  __u6_addr32[4];
 123         } __u6_addr;                    /* 128-bit IP6 address */
 124 };
 125
 126 #define s6_addr   __u6_addr.__u6_addr8
 127 #ifdef _KERNEL  /* XXX nonstandard */
 128 #define s6_addr8  __u6_addr.__u6_addr8
 129 #define s6_addr16 __u6_addr.__u6_addr16
 130 #define s6_addr32 __u6_addr.__u6_addr32
 131 #endif
 132
 133 #define INET6_ADDRSTRLEN        46
 134
 135 /*
 136  * Socket address for IPv6
 137  */
 138 #ifndef _XOPEN_SOURCE
 139 #define SIN6_LEN
 140 #endif
 141 struct sockaddr_in6 {
 142         uint8_t sin6_family;    /* AF_INET6 (sa_family_t) */
 143         uint16_t        sin6_port;      /* Transport layer port # (in_port_t)*/
 144         uint32_t        sin6_flowinfo;  /* IP6 flow information */
 145         struct in6_addr sin6_addr;      /* IP6 address */
 146         uint32_t        sin6_scope_id;  /* scope zone index */
 147 };
 148
 149 /*
 150  * Local definition for masks
 151  */
 152 #ifdef _KERNEL  /* XXX nonstandard */
 153 #define IN6MASK0        {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
 154 #define IN6MASK32       {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
 155                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 156 #define IN6MASK64       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 157                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 158 #define IN6MASK96       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 159                             0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 160 #define IN6MASK128      {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 161                             0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
 162 #endif
 163
 164 #ifdef _KERNEL
 165 extern const struct sockaddr_in6 sa6_any;
 166
 167 extern const struct in6_addr in6mask0;
 168 extern const struct in6_addr in6mask32;
 169 extern const struct in6_addr in6mask64;
 170 extern const struct in6_addr in6mask96;
 171 extern const struct in6_addr in6mask128;
 172 #endif /* _KERNEL */
 173
 174 /*
 175  * Macros started with IPV6_ADDR is KAME local
 176  */
 177 #ifdef _KERNEL  /* XXX nonstandard */
 178 #if BYTE_ORDER == BIG_ENDIAN
 179 #define IPV6_ADDR_INT32_ONE     1
 180 #define IPV6_ADDR_INT32_TWO     2
 181 #define IPV6_ADDR_INT32_MNL     0xff010000
 182 #define IPV6_ADDR_INT32_MLL     0xff020000
 183 #define IPV6_ADDR_INT32_SMP     0x0000ffff
 184 #define IPV6_ADDR_INT16_ULL     0xfe80
 185 #define IPV6_ADDR_INT16_USL     0xfec0
 186 #define IPV6_ADDR_INT16_MLL     0xff02
 187 #elif BYTE_ORDER == LITTLE_ENDIAN
 188 #define IPV6_ADDR_INT32_ONE     0x01000000
 189 #define IPV6_ADDR_INT32_TWO     0x02000000
 190 #define IPV6_ADDR_INT32_MNL     0x000001ff
 191 #define IPV6_ADDR_INT32_MLL     0x000002ff
 192 #define IPV6_ADDR_INT32_SMP     0xffff0000
 193 #define IPV6_ADDR_INT16_ULL     0x80fe
 194 #define IPV6_ADDR_INT16_USL     0xc0fe
 195 #define IPV6_ADDR_INT16_MLL     0x02ff
 196 #endif
 197 #endif
 198
 199 /*
 200  * Definition of some useful macros to handle IP6 addresses
 201  */
 202 #define IN6ADDR_ANY_INIT \
 203         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 204             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 205 #define IN6ADDR_LOOPBACK_INIT \
 206         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 207             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 208 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
 209         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 210             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 211 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
 212         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 213             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 214 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
 215         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 216             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
 217
 218
 219 __BEGIN_DECLS
 220
 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
 227 __END_DECLS
 228
 229 /*
 230  * Equality
 231  * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
 232  * does not supply memcmp().  For userland memcmp() is preferred as it is
 233  * in ANSI standard.
 234  */
 235 #ifdef _KERNEL
 236 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
 237     (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 238 #else
 239 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
 240     (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 241 #endif
 242
 243 #ifdef _KERNEL                  /* non standard */
 244 /* see if two addresses are equal in a scope-conscious manner. */
 245 #define SA6_ARE_ADDR_EQUAL(a, b) \
 246         (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
 247           ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
 248          (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
 249 #endif
 250
 251 /*
 252  * Unspecified
 253  */
 254 #define IN6_IS_ADDR_UNSPECIFIED(a)      \
 255         ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
 256          (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
 257          (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&  \
 258          (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
 259
 260 /*
 261  * Loopback
 262  */
 263 #define IN6_IS_ADDR_LOOPBACK(a)         \
 264         ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
 265          (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
 266          (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&  \
 267          (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
 268
 269 /*
 270  * IPv4 compatible
 271  */
 272 #define IN6_IS_ADDR_V4COMPAT(a)         \
 273         ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
 274          (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
 275          (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&  \
 276          (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
 277          (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
 278
 279 /*
 280  * Mapped
 281  */
 282 #define IN6_IS_ADDR_V4MAPPED(a)               \
 283         ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
 284          (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
 285          (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
 286
 287 /*
 288  * KAME Scope Values
 289  */
 290
 291 #ifdef _KERNEL  /* XXX nonstandard */
 292 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
 293 #define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
 294 #define IPV6_ADDR_SCOPE_SITELOCAL       0x05
 295 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08    /* just used in this file */
 296 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
 297 #else
 298 #define __IPV6_ADDR_SCOPE_NODELOCAL     0x01
 299 #define __IPV6_ADDR_SCOPE_LINKLOCAL     0x02
 300 #define __IPV6_ADDR_SCOPE_SITELOCAL     0x05
 301 #define __IPV6_ADDR_SCOPE_ORGLOCAL      0x08    /* just used in this file */
 302 #define __IPV6_ADDR_SCOPE_GLOBAL        0x0e
 303 #endif
 304
 305 /*
 306  * Unicast Scope
 307  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 308  */
 309 #define IN6_IS_ADDR_LINKLOCAL(a)        \
 310         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
 311 #define IN6_IS_ADDR_SITELOCAL(a)        \
 312         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
 313
 314 /*
 315  * Multicast
 316  */
 317 #define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)
 318
 319 #ifdef _KERNEL  /* XXX nonstandard */
 320 #define IPV6_ADDR_MC_SCOPE(a)           ((a)->s6_addr[1] & 0x0f)
 321 #else
 322 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 323 #endif
 324
 325 /*
 326  * Multicast Scope
 327  */
 328 #ifdef _KERNEL  /* refers nonstandard items */
 329 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 330         (IN6_IS_ADDR_MULTICAST(a) &&    \
 331          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
 332 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 333         (IN6_IS_ADDR_MULTICAST(a) &&    \
 334          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
 335 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 336         (IN6_IS_ADDR_MULTICAST(a) &&    \
 337          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
 338 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 339         (IN6_IS_ADDR_MULTICAST(a) &&    \
 340          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
 341 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 342         (IN6_IS_ADDR_MULTICAST(a) &&    \
 343          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
 344 #else
 345 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 346         (IN6_IS_ADDR_MULTICAST(a) &&    \
 347          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
 348 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 349         (IN6_IS_ADDR_MULTICAST(a) &&    \
 350          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
 351 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 352         (IN6_IS_ADDR_MULTICAST(a) &&    \
 353          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
 354 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 355         (IN6_IS_ADDR_MULTICAST(a) &&    \
 356          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
 357 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 358         (IN6_IS_ADDR_MULTICAST(a) &&    \
 359          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
 360 #endif
 361
 362 #ifdef _KERNEL  /* nonstandard */
 363 /*
 364  * KAME Scope
 365  */
 366 #define IN6_IS_SCOPE_LINKLOCAL(a)       \
 367         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 368          (IN6_IS_ADDR_MC_LINKLOCAL(a)))
 369
 370 #define IFA6_IS_DEPRECATED(a) \
 371         ((a)->ia6_lifetime.ia6t_preferred != 0 && \
 372          (a)->ia6_lifetime.ia6t_preferred < time_second)
 373 #define IFA6_IS_INVALID(a) \
 374         ((a)->ia6_lifetime.ia6t_expire != 0 && \
 375          (a)->ia6_lifetime.ia6t_expire < time_second)
 376 #endif /* _KERNEL */
 377
 378 /*
 379  * IP6 route structure
 380  */
 381 #ifndef _XOPEN_SOURCE
 382 struct route_in6 {
 383         struct  rtentry *ro_rt;
 384         struct  sockaddr_in6 ro_dst;
 385 };
 386 #endif
 387
 388 /*
 389  * Options for use with [gs]etsockopt at the IPV6 level.
 390  * First word of comment is data type; bool is stored in int.
 391  */
 392 /* no hdrincl */
 393 #if 0 /* the followings are relic in IPv4 and hence are disabled */
 394 #define IPV6_OPTIONS            1  /* buf/ip6_opts; set/get IP6 options */
 395 #define IPV6_RECVOPTS           5  /* bool; receive all IP6 opts w/dgram */
 396 #define IPV6_RECVRETOPTS        6  /* bool; receive IP6 opts for response */
 397 #define IPV6_RECVDSTADDR        7  /* bool; receive IP6 dst addr w/dgram */
 398 #define IPV6_RETOPTS            8  /* ip6_opts; set/get IP6 options */
 399 #endif
 400 #define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
 401 #define IPV6_UNICAST_HOPS       4  /* int; IP6 hops */
 402 #define IPV6_MULTICAST_IF       9  /* u_char; set/get IP6 multicast i/f  */
 403 #define IPV6_MULTICAST_HOPS     10 /* u_char; set/get IP6 multicast hops */
 404 #define IPV6_MULTICAST_LOOP     11 /* u_char; set/get IP6 multicast loopback */
 405 #define IPV6_JOIN_GROUP         12 /* ip6_mreq; join a group membership */
 406 #define IPV6_LEAVE_GROUP        13 /* ip6_mreq; leave a group membership */
 407 #define IPV6_PORTRANGE          14 /* int; range to choose for unspec port */
 408 #define ICMP6_FILTER            18 /* icmp6_filter; icmp6 filter */
 409 /* RFC2292 options */
 410 #define IPV6_PKTINFO            19 /* bool; send/recv if, src/dst addr */
 411 #define IPV6_HOPLIMIT           20 /* bool; hop limit */
 412 #define IPV6_NEXTHOP            21 /* bool; next hop addr */
 413 #define IPV6_HOPOPTS            22 /* bool; hop-by-hop option */
 414 #define IPV6_DSTOPTS            23 /* bool; destination option */
 415 #define IPV6_RTHDR              24 /* bool; routing header */
 416 #define IPV6_PKTOPTIONS         25 /* buf/cmsghdr; set/get IPv6 options */
 417
 418 #define IPV6_CHECKSUM           26 /* int; checksum offset for raw socket */
 419 #define IPV6_V6ONLY             27 /* bool; only bind INET6 at wildcard bind */
 420 #ifndef _KERNEL
 421 #define IPV6_BINDV6ONLY         IPV6_V6ONLY
 422 #endif
 423
 424 #if 1 /* IPSEC */
 425 #define IPV6_IPSEC_POLICY       28 /* struct; get/set security policy */
 426 #endif
 427 #define IPV6_FAITH              29 /* bool; accept FAITH'ed connections */
 428
 429 #if 1 /* IPV6FIREWALL */
 430 #define IPV6_FW_ADD             30 /* add a firewall rule to chain */
 431 #define IPV6_FW_DEL             31 /* delete a firewall rule from chain */
 432 #define IPV6_FW_FLUSH           32 /* flush firewall rule chain */
 433 #define IPV6_FW_ZERO            33 /* clear single/all firewall counter(s) */
 434 #define IPV6_FW_GET             34 /* get entire firewall rule chain */
 435 #endif
 436
 437 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 438
 439 #define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
 440 #define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
 441 #define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */
 442
 443 /*
 444  * Defaults and limits for options
 445  */
 446 #define IPV6_DEFAULT_MULTICAST_HOPS 1   /* normally limit m'casts to 1 hop */
 447 #define IPV6_DEFAULT_MULTICAST_LOOP 1   /* normally hear sends if a member */
 448
 449 /*
 450  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 451  */
 452 struct ipv6_mreq {
 453         struct in6_addr ipv6mr_multiaddr;
 454         unsigned int    ipv6mr_interface;
 455 };
 456
 457 /*
 458  * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
 459  */
 460 struct in6_pktinfo {
 461         struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
 462         unsigned int    ipi6_ifindex;   /* send/recv interface index */
 463 };
 464
 465 /*
 466  * Argument for IPV6_PORTRANGE:
 467  * - which range to search when port is unspecified at bind() or connect()
 468  */
 469 #define IPV6_PORTRANGE_DEFAULT  0       /* default range */
 470 #define IPV6_PORTRANGE_HIGH     1       /* "high" - request firewall bypass */
 471 #define IPV6_PORTRANGE_LOW      2       /* "low" - vouchsafe security */
 472
 473 #ifndef _XOPEN_SOURCE
 474 /*
 475  * Definitions for inet6 sysctl operations.
 476  *
 477  * Third level is protocol number.
 478  * Fourth level is desired variable within that protocol.
 479  */
 480 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1)       /* don't list to IPV6PROTO_MAX */
 481
 482 #define CTL_IPV6PROTO_NAMES { \
 483         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 484         { 0, 0 }, \
 485         { "tcp6", CTLTYPE_NODE }, \
 486         { 0, 0 }, \
 487         { 0, 0 }, \
 488         { 0, 0 }, \
 489         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 490         { 0, 0 }, \
 491         { 0, 0 }, \
 492         { "udp6", CTLTYPE_NODE }, \
 493         { 0, 0 }, \
 494         { 0, 0 }, \
 495         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 496         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 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 }, \
 500         { "ip6", CTLTYPE_NODE }, \
 501         { 0, 0 }, \
 502         { 0, 0 }, \
 503         { 0, 0 }, \
 504         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 505         { 0, 0 }, \
 506         { "ipsec6", CTLTYPE_NODE }, \
 507         { 0, 0 }, \
 508         { 0, 0 }, \
 509         { 0, 0 }, \
 510         { 0, 0 }, \
 511         { 0, 0 }, \
 512         { 0, 0 }, \
 513         { "icmp6", CTLTYPE_NODE }, \
 514         { 0, 0 }, \
 515         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 516         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 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 }, \
 524         { 0, 0 }, \
 525         { 0, 0 }, \
 526         { "pim6", CTLTYPE_NODE }, \
 527 }
 528
 529 /*
 530  * Names for IP sysctl objects
 531  */
 532 #define IPV6CTL_FORWARDING      1       /* act as router */
 533 #define IPV6CTL_SENDREDIRECTS   2       /* may send redirects when forwarding*/
 534 #define IPV6CTL_DEFHLIM         3       /* default Hop-Limit */
 535 #ifdef notyet
 536 #define IPV6CTL_DEFMTU          4       /* default MTU */
 537 #endif
 538 #define IPV6CTL_FORWSRCRT       5       /* forward source-routed dgrams */
 539 #define IPV6CTL_STATS           6       /* stats */
 540 #define IPV6CTL_MRTSTATS        7       /* multicast forwarding stats */
 541 #define IPV6CTL_MRTPROTO        8       /* multicast routing protocol */
 542 #define IPV6CTL_MAXFRAGPACKETS  9       /* max packets reassembly queue */
 543 #define IPV6CTL_SOURCECHECK     10      /* verify source route and intf */
 544 #define IPV6CTL_SOURCECHECK_LOGINT 11   /* minimume logging interval */
 545 #define IPV6CTL_ACCEPT_RTADV    12
 546 #define IPV6CTL_KEEPFAITH       13
 547 #define IPV6CTL_LOG_INTERVAL    14
 548 #define IPV6CTL_HDRNESTLIMIT    15
 549 #define IPV6CTL_DAD_COUNT       16
 550 #define IPV6CTL_AUTO_FLOWLABEL  17
 551 #define IPV6CTL_DEFMCASTHLIM    18
 552 #define IPV6CTL_GIF_HLIM        19      /* default HLIM for gif encap packet */
 553 #define IPV6CTL_KAME_VERSION    20
 554 #define IPV6CTL_USE_DEPRECATED  21      /* use deprecated addr (RFC2462 5.5.4) */
 555 #define IPV6CTL_RR_PRUNE        22      /* walk timer for router renumbering */
 556 #if 0   /* obsolete */
 557 #define IPV6CTL_MAPPED_ADDR     23
 558 #endif
 559 #define IPV6CTL_V6ONLY          24
 560 #define IPV6CTL_RTEXPIRE        25      /* cloned route expiration time */
 561 #define IPV6CTL_RTMINEXPIRE     26      /* min value for expiration time */
 562 #define IPV6CTL_RTMAXCACHE      27      /* trigger level for dynamic expire */
 563
 564 #define IPV6CTL_USETEMPADDR     32      /* use temporary addresses (RFC3041) */
 565 #define IPV6CTL_TEMPPLTIME      33      /* preferred lifetime for tmpaddrs */
 566 #define IPV6CTL_TEMPVLTIME      34      /* valid lifetime for tmpaddrs */
 567 #define IPV6CTL_AUTO_LINKLOCAL  35      /* automatic link-local addr assign */
 568 #define IPV6CTL_RIP6STATS       36      /* raw_ip6 stats */
 569
 570 /* New entries should be added here from current IPV6CTL_MAXID value. */
 571 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 572 #define IPV6CTL_MAXID           37
 573
 574 #endif /* !_XOPEN_SOURCE */
 575
 576 /*
 577  * Redefinition of mbuf flags
 578  */
 579 #define M_AUTHIPHDR     M_PROTO2
 580 #define M_DECRYPTED     M_PROTO3
 581 #define M_LOOP          M_PROTO4
 582 #define M_AUTHIPDGM     M_PROTO5
 583
 584 #ifdef _KERNEL
 585 struct cmsghdr;
 586
 587 int     in6_cksum __P((struct mbuf *, uint8_t, uint32_t, uint32_t));
 588 int     in6_localaddr __P((struct in6_addr *));
 589 int     in6_addrscope __P((struct in6_addr *));
 590 struct  in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *));
 591 struct  in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
 592 extern void in6_if_up __P((struct ifnet *));
 593 struct sockaddr;
 594 extern  u_char  ip6_protox[];
 595
 596 void    in6_sin6_2_sin __P((struct sockaddr_in *sin,
 597                             struct sockaddr_in6 *sin6));
 598 void    in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
 599                                  struct sockaddr_in6 *sin6));
 600 void    in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
 601 void    in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
 602
 603 #define satosin6(sa)    ((struct sockaddr_in6 *)(sa))
 604 #define sin6tosa(sin6)  ((struct sockaddr *)(sin6))
 605 #define ifatoia6(ifa)   ((struct in6_ifaddr *)(ifa))
 606
 607 extern int      (*faithprefix_p)(struct in6_addr *);
 608 #endif /* _KERNEL */
 609
 610 __BEGIN_DECLS
 611 struct cmsghdr;
 612
 613 extern int inet6_option_space __P((int));
 614 extern int inet6_option_init __P((void *, struct cmsghdr **, int));
 615 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *,
 616         int, int));
 617 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
 618 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **));
 619 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int));
 620
 621 extern size_t inet6_rthdr_space __P((int, int));
 622 extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
 623 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
 624                 unsigned int));
 625 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
 626 #if 0 /* not implemented yet */
 627 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
 628 #endif
 629 extern int inet6_rthdr_segments __P((const struct cmsghdr *));
 630 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
 631 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
 632
 633 extern int inet6_opt_init __P((void *, size_t));
 634 extern int inet6_opt_append __P((void *, size_t, int, uint8_t,
 635                                  size_t, uint8_t, void **));
 636 extern int inet6_opt_finish __P((void *, size_t, int));
 637 extern int inet6_opt_set_val __P((void *, size_t, void *, int));
 638
 639 extern int inet6_opt_next __P((void *, size_t, int, uint8_t *,
 640                                size_t *, void **));
 641 extern int inet6_opt_find __P((void *, size_t, int, uint8_t,
 642                           size_t *, void **));
 643 extern int inet6_opt_get_val __P((void *, size_t, void *, int));
 644 extern size_t inet6_rth_space __P((int, int));
 645 extern void *inet6_rth_init __P((void *, int, int, int));
 646 extern int inet6_rth_add __P((void *, const struct in6_addr *));
 647 extern int inet6_rth_reverse __P((const void *, void *));
 648 extern int inet6_rth_segments __P((const void *));
 649 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
 650 __END_DECLS
 651
 652 #endif /* !_NETINET6_IN6_H_ */