sys/netinet6/in6.h

   1 /*      $FreeBSD: src/sys/netinet6/in6.h,v 1.7.2.7 2002/08/01 19:38:50 ume 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  * 3. 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 /*
  72  * Identification of the network protocol stack
  73  * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
  74  * has the table of implementation/integration differences.
  75  */
  76 #define __KAME__
  77 #define __KAME_VERSION          "20010528/FreeBSD"
  78
  79 #ifndef _SOCKLEN_T_DECLARED
  80 #define _SOCKLEN_T_DECLARED
  81 typedef __socklen_t     socklen_t;
  82 #endif
  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_ANONMIN 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 #ifndef _STRUCT_IN6_ADDR_DECLARED
 122 struct in6_addr {
 123         union {
 124                 uint8_t   __u6_addr8[16];
 125                 uint16_t  __u6_addr16[8];
 126                 uint32_t  __u6_addr32[4];
 127         } __u6_addr;                    /* 128-bit IP6 address */
 128 };
 129 #define _STRUCT_IN6_ADDR_DECLARED
 130 #endif
 131
 132 #define s6_addr         __u6_addr.__u6_addr8
 133 #define _s6_addr16      __u6_addr.__u6_addr16           /* internal use */
 134 #define _s6_addr32      __u6_addr.__u6_addr32           /* internal use */
 135 #if __BSD_VISIBLE                                       /* XXX nonstandard */
 136 #define s6_addr8        __u6_addr.__u6_addr8
 137 #define s6_addr16       __u6_addr.__u6_addr16
 138 #define s6_addr32       __u6_addr.__u6_addr32
 139 #endif
 140
 141 #define INET6_ADDRSTRLEN        46
 142
 143 /*
 144  * Socket address for IPv6
 145  */
 146 #ifndef _XOPEN_SOURCE
 147 #define SIN6_LEN
 148 #endif
 149 struct sockaddr_in6 {
 150         uint8_t         sin6_len;       /* length of this struct(sa_family_t)*/
 151         sa_family_t     sin6_family;    /* AF_INET6 */
 152         uint16_t        sin6_port;      /* Transport layer port # (in_port_t)*/
 153         uint32_t        sin6_flowinfo;  /* IP6 flow information */
 154         struct in6_addr sin6_addr;      /* IP6 address */
 155         uint32_t        sin6_scope_id;  /* scope zone index */
 156 };
 157
 158 /*
 159  * Local definition for masks
 160  */
 161 #ifdef _KERNEL  /* XXX nonstandard */
 162 #define IN6MASK0        {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
 163 #define IN6MASK32       {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
 164                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 165 #define IN6MASK64       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 166                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 167 #define IN6MASK96       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 168                             0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 169 #define IN6MASK128      {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 170                             0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
 171 #endif
 172
 173 #ifdef _KERNEL
 174 extern const struct sockaddr_in6 sa6_any;
 175
 176 extern const struct in6_addr in6mask0;
 177 extern const struct in6_addr in6mask32;
 178 extern const struct in6_addr in6mask64;
 179 extern const struct in6_addr in6mask96;
 180 extern const struct in6_addr in6mask128;
 181 #endif /* _KERNEL */
 182
 183 /*
 184  * Macros started with IPV6_ADDR is KAME local
 185  */
 186 #if BYTE_ORDER == BIG_ENDIAN
 187 #define _IPV6_ADDR_INT16_UL_MASK        0xffc0
 188 #define _IPV6_ADDR_INT16_ULL            0xfe80
 189 #define _IPV6_ADDR_INT16_USL            0xfec0
 190 #else
 191 #define _IPV6_ADDR_INT16_UL_MASK        0xc0ff
 192 #define _IPV6_ADDR_INT16_ULL            0x80fe
 193 #define _IPV6_ADDR_INT16_USL            0xc0fe
 194 #endif
 195
 196 #ifdef _KERNEL  /* XXX nonstandard */
 197 #if BYTE_ORDER == BIG_ENDIAN
 198 #define IPV6_ADDR_INT32_ONE     1
 199 #define IPV6_ADDR_INT32_TWO     2
 200 #define IPV6_ADDR_INT32_MNL     0xff010000
 201 #define IPV6_ADDR_INT32_MLL     0xff020000
 202 #define IPV6_ADDR_INT32_SMP     0x0000ffff
 203 #define IPV6_ADDR_INT16_MLL     0xff02
 204 #elif BYTE_ORDER == LITTLE_ENDIAN
 205 #define IPV6_ADDR_INT32_ONE     0x01000000
 206 #define IPV6_ADDR_INT32_TWO     0x02000000
 207 #define IPV6_ADDR_INT32_MNL     0x000001ff
 208 #define IPV6_ADDR_INT32_MLL     0x000002ff
 209 #define IPV6_ADDR_INT32_SMP     0xffff0000
 210 #define IPV6_ADDR_INT16_MLL     0x02ff
 211 #endif
 212 #define IPV6_ADDR_INT16_ULL     _IPV6_ADDR_INT16_ULL
 213 #define IPV6_ADDR_INT16_USL     _IPV6_ADDR_INT16_USL
 214 #endif
 215
 216 /*
 217  * Definition of some useful macros to handle IP6 addresses
 218  */
 219 #define IN6ADDR_ANY_INIT                                                \
 220         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             \
 221             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 222 #define IN6ADDR_LOOPBACK_INIT                                           \
 223         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             \
 224             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 225 #define IN6ADDR_NODELOCAL_ALLNODES_INIT                                 \
 226         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             \
 227             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 228 #define IN6ADDR_INTFACELOCAL_ALLNODES_INIT                              \
 229         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             \
 230             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 231 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT                                 \
 232         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             \
 233             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 234 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT                               \
 235         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             \
 236             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
 237 #define IN6ADDR_LINKLOCAL_ALLMDNS_INIT                                  \
 238         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             \
 239             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfb }}}
 240
 241 #ifdef _KERNEL
 242 extern const struct in6_addr kin6addr_any;
 243 extern const struct in6_addr kin6addr_loopback;
 244 extern const struct in6_addr kin6addr_nodelocal_allnodes;
 245 extern const struct in6_addr kin6addr_linklocal_allnodes;
 246 extern const struct in6_addr kin6addr_linklocal_allrouters;
 247 #else
 248 extern const struct in6_addr in6addr_any;
 249 extern const struct in6_addr in6addr_loopback;
 250 extern const struct in6_addr in6addr_nodelocal_allnodes;
 251 extern const struct in6_addr in6addr_linklocal_allnodes;
 252 #endif
 253
 254 #define IN6_ARE_ADDR_EQUAL(a, b)                                        \
 255     (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 256
 257 #ifdef _KERNEL                  /* non standard */
 258 /* see if two addresses are equal in a scope-conscious manner. */
 259 #define SA6_ARE_ADDR_EQUAL(a, b) \
 260         (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 ||         \
 261           (a)->sin6_scope_id == (b)->sin6_scope_id) &&                  \
 262          (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
 263 #endif
 264
 265 /*
 266  * Unspecified
 267  */
 268 #define IN6_IS_ADDR_UNSPECIFIED(a)                                      \
 269         ((a)->_s6_addr32[0] == 0 && (a)->_s6_addr32[1] == 0 &&          \
 270          (a)->_s6_addr32[2] == 0 && (a)->_s6_addr32[3] == 0)
 271
 272 /*
 273  * Loopback
 274  */
 275 #define IN6_IS_ADDR_LOOPBACK(a)                                         \
 276         ((a)->_s6_addr32[0] == 0 && (a)->_s6_addr32[1] == 0 &&  \
 277          (a)->_s6_addr32[2] == 0 && (a)->_s6_addr32[3] == ntohl(1))
 278
 279 /*
 280  * Mapped
 281  */
 282 #define IN6_IS_ADDR_V4MAPPED(a)                                         \
 283         ((a)->_s6_addr32[0] == 0 && (a)->_s6_addr32[1] == 0 &&          \
 284          (a)->_s6_addr32[2] == ntohl(0x0000ffff))
 285
 286 /*
 287  * IPv4 compatible.  Deprecated by RFC4291.
 288  */
 289 #define IN6_IS_ADDR_V4COMPAT(a)                                         \
 290         ((a)->_s6_addr32[0] == 0 &&                                     \
 291          (a)->_s6_addr32[1] == 0 &&                                     \
 292          (a)->_s6_addr32[2] == 0 &&                                     \
 293          (a)->_s6_addr32[3] != 0 && (a)->_s6_addr32[3] != ntohl(1))
 294
 295 /*
 296  * KAME Scope Values
 297  */
 298
 299 #define __IPV6_ADDR_SCOPE_NODELOCAL     0x01
 300 #define __IPV6_ADDR_SCOPE_INTFACELOCAL  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
 306 #ifdef _KERNEL                                  /* XXX nonstandard */
 307 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
 308 #define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01
 309 #define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
 310 #define IPV6_ADDR_SCOPE_SITELOCAL       0x05
 311 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08    /* just used in this file */
 312 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
 313 #endif
 314
 315 /*
 316  * Unicast Scope
 317  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 318  */
 319 #define IN6_IS_ADDR_LINKLOCAL(a)                                        \
 320     (((a)->_s6_addr16[0] & _IPV6_ADDR_INT16_UL_MASK) == _IPV6_ADDR_INT16_ULL)
 321 #define IN6_IS_ADDR_SITELOCAL(a)                                        \
 322     (((a)->_s6_addr16[0] & _IPV6_ADDR_INT16_UL_MASK) == _IPV6_ADDR_INT16_USL)
 323
 324 /*
 325  * Multicast
 326  */
 327 #define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)
 328 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 329 #ifdef _KERNEL                                  /* XXX nonstandard */
 330 #define IPV6_ADDR_MC_SCOPE(a)           __IPV6_ADDR_MC_SCOPE(a)
 331 #endif
 332
 333 /*
 334  * Multicast Scope
 335  */
 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
 340 #define IN6_IS_ADDR_MC_INTFACELOCAL(a)                                  \
 341         (IN6_IS_ADDR_MULTICAST(a) &&                                    \
 342          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
 343
 344 #define IN6_IS_ADDR_MC_LINKLOCAL(a)                                     \
 345         (IN6_IS_ADDR_MULTICAST(a) &&                                    \
 346          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
 347
 348 #define IN6_IS_ADDR_MC_SITELOCAL(a)                                     \
 349         (IN6_IS_ADDR_MULTICAST(a) &&                                    \
 350          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
 351
 352 #define IN6_IS_ADDR_MC_ORGLOCAL(a)                                      \
 353         (IN6_IS_ADDR_MULTICAST(a) &&                                    \
 354          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
 355
 356 #define IN6_IS_ADDR_MC_GLOBAL(a)                                        \
 357         (IN6_IS_ADDR_MULTICAST(a) &&                                    \
 358          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
 359
 360 #ifdef _KERNEL  /* nonstandard */
 361 /*
 362  * KAME Scope
 363  */
 364 #define IN6_IS_SCOPE_LINKLOCAL(a)                                       \
 365         (IN6_IS_ADDR_LINKLOCAL(a) || IN6_IS_ADDR_MC_LINKLOCAL(a))
 366 #define IN6_IS_SCOPE_EMBED(a)                                           \
 367         ((IN6_IS_ADDR_LINKLOCAL(a)) ||                                  \
 368          (IN6_IS_ADDR_MC_LINKLOCAL(a)) ||                               \
 369          (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
 370
 371
 372 #define IFA6_IS_DEPRECATED(a)                                           \
 373         ((a)->ia6_lifetime.ia6t_preferred != 0 &&                       \
 374          (a)->ia6_lifetime.ia6t_preferred < time_uptime)
 375
 376 #define IFA6_IS_INVALID(a)                                              \
 377         ((a)->ia6_lifetime.ia6t_expire != 0 &&                          \
 378          (a)->ia6_lifetime.ia6t_expire < time_uptime)
 379 #endif
 380
 381 /*
 382  * IP6 route structure
 383  */
 384 #ifndef _XOPEN_SOURCE
 385 struct route_in6 {
 386         struct rtentry          *ro_rt;
 387         struct sockaddr_in6     ro_dst;
 388 };
 389 #endif
 390
 391 /*
 392  * Options for use with [gs]etsockopt at the IPV6 level.
 393  * First word of comment is data type; bool is stored in int.
 394  */
 395 /* no hdrincl */
 396 #if 0 /* the followings are relic in IPv4 and hence are disabled */
 397 #define IPV6_OPTIONS            1  /* buf/ip6_opts; set/get IP6 options */
 398 #define IPV6_RECVOPTS           5  /* bool; receive all IP6 opts w/dgram */
 399 #define IPV6_RECVRETOPTS        6  /* bool; receive IP6 opts for response */
 400 #define IPV6_RECVDSTADDR        7  /* bool; receive IP6 dst addr w/dgram */
 401 #define IPV6_RETOPTS            8  /* ip6_opts; set/get IP6 options */
 402 #endif
 403 #define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
 404 #define IPV6_UNICAST_HOPS       4  /* int; IP6 hops */
 405 #define IPV6_MULTICAST_IF       9  /* u_int; set/get IP6 multicast i/f  */
 406 #define IPV6_MULTICAST_HOPS     10 /* int; set/get IP6 multicast hops */
 407 #define IPV6_MULTICAST_LOOP     11 /* u_int; set/get IP6 multicast loopback */
 408 #define IPV6_JOIN_GROUP         12 /* ip6_mreq; join a group membership */
 409 #define IPV6_LEAVE_GROUP        13 /* ip6_mreq; leave a group membership */
 410 #define IPV6_PORTRANGE          14 /* int; range to choose for unspec port */
 411 #define ICMP6_FILTER            18 /* icmp6_filter; icmp6 filter */
 412 /* RFC2292 options */
 413 #ifdef _KERNEL
 414 #define IPV6_2292PKTINFO        19 /* bool; send/recv if, src/dst addr */
 415 #define IPV6_2292HOPLIMIT       20 /* bool; hop limit */
 416 #define IPV6_2292NEXTHOP        21 /* bool; next hop addr */
 417 #define IPV6_2292HOPOPTS        22 /* bool; hop-by-hop option */
 418 #define IPV6_2292DSTOPTS        23 /* bool; destinaion option */
 419 #define IPV6_2292RTHDR          24 /* bool; routing header */
 420 #define IPV6_2292PKTOPTIONS     25 /* buf/cmsghdr; set/get IPv6 options */
 421 #endif
 422
 423 #define IPV6_CHECKSUM           26 /* int; checksum offset for raw socket */
 424 #define IPV6_V6ONLY             27 /* bool; only bind INET6 at wildcard bind */
 425 #ifndef _KERNEL
 426 #define IPV6_BINDV6ONLY         IPV6_V6ONLY
 427 #endif
 428
 429 #if 1 /* IPSEC */
 430 #define IPV6_IPSEC_POLICY       28 /* struct; get/set security policy */
 431 #endif
 432 #define IPV6_FAITH              29 /* bool; accept FAITH'ed connections */
 433
 434 #if 1 /* IPV6FIREWALL */
 435 #define IPV6_FW_ADD             30 /* add a firewall rule to chain */
 436 #define IPV6_FW_DEL             31 /* delete a firewall rule from chain */
 437 #define IPV6_FW_FLUSH           32 /* flush firewall rule chain */
 438 #define IPV6_FW_ZERO            33 /* clear single/all firewall counter(s) */
 439 #define IPV6_FW_GET             34 /* get entire firewall rule chain */
 440 #endif
 441
 442 /*
 443  * new socket options introduced in RFC3542
 444  */
 445 #define IPV6_RTHDRDSTOPTS       35 /* ip6_dest; send dst option before rthdr */
 446 #define IPV6_RECVPKTINFO        36 /* bool; recv if, dst addr */
 447 #define IPV6_RECVHOPLIMIT       37 /* bool; recv hop limit */
 448 #define IPV6_RECVRTHDR          38 /* bool; recv routing header */
 449 #define IPV6_RECVHOPOPTS        39 /* bool; recv hop-by-hop option */
 450 #define IPV6_RECVDSTOPTS        40 /* bool; recv dst option after rthdr */
 451 #ifdef _KERNEL
 452 #define IPV6_RECVRTHDRDSTOPTS   41 /* bool; recv dst option before rthdr */
 453 #endif
 454 #define IPV6_USE_MIN_MTU        42 /* bool; send packets at the minimum MTU */
 455 #define IPV6_RECVPATHMTU        43 /* bool; notify an according MTU */
 456
 457 /* mtuinfo; get the current path MTU (sopt),
 458  * 4 bytes int; MTU notification (cmsg)
 459  */
 460 #define IPV6_PATHMTU            44
 461 #if 0 /*obsoleted during 2292bis -> 3542*/
 462 #define IPV6_REACHCONF          45 /* no data; ND reachability confirm
 463                                       (cmsg only/not in of RFC3542) */
 464 #endif
 465 #define IPV6_PKTINFO            46 /* in6_pktinfo; send if, src addr */
 466 #define IPV6_HOPLIMIT           47 /* int; send hop limit */
 467 #define IPV6_NEXTHOP            48 /* sockaddr; next hop addr */
 468 #define IPV6_HOPOPTS            49 /* ip6_hbh; send hop-by-hop option */
 469 #define IPV6_DSTOPTS            50 /* ip6_dest; send dst option befor rthdr */
 470 #define IPV6_RTHDR              51 /* ip6_rthdr; send routing header */
 471 #define IPV6_PKTOPTIONS         52 /* buf/cmsghdr; set/get IPv6 options, this is obsoleted by RFC3542 */
 472
 473 #define IPV6_RECVTCLASS         57 /* bool; recv traffic class values */
 474
 475 #define IPV6_AUTOFLOWLABEL      59 /* bool; attach flowlabel automagically */
 476
 477 #define IPV6_TCLASS             61 /* int; send traffic class value */
 478 #define IPV6_DONTFRAG           62 /* bool; disable IPv6 fragmentation */
 479
 480 #define IPV6_PREFER_TEMPADDR    63 /* int; prefer temporary addresses as
 481                                     * the source address.
 482                                     */
 483 /*
 484  * The following option is private; do not use it from user applications.
 485  * It is deliberately defined to the same value as IP_MSFILTER.
 486  */
 487 #define IPV6_MSFILTER           74 /* struct __msfilterreq;
 488                                     * set/get multicast source filter list.
 489                                     */
 490 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 491
 492 #define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
 493 #define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
 494 #define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */
 495
 496 /*
 497  * Defaults and limits for options
 498  */
 499 #define IPV6_DEFAULT_MULTICAST_HOPS 1   /* normally limit m'casts to 1 hop */
 500 #define IPV6_DEFAULT_MULTICAST_LOOP 1   /* normally hear sends if a member */
 501
 502 /*
 503  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 504  */
 505 struct ipv6_mreq {
 506         struct in6_addr ipv6mr_multiaddr;
 507         unsigned int    ipv6mr_interface;
 508 };
 509
 510 /*
 511  * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
 512  */
 513 struct in6_pktinfo {
 514         struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
 515         unsigned int    ipi6_ifindex;   /* send/recv interface index */
 516 };
 517
 518 /*
 519  * New Control structure for IPV6_RECVPATHMTU socket option introduced in RFC3542.
 520  */
 521 struct ip6_mtuinfo {
 522         struct sockaddr_in6 ip6m_addr;  /* or sockaddr_storage? */
 523         uint32_t ip6m_mtu;
 524 };
 525
 526 /*
 527  * Argument for IPV6_PORTRANGE:
 528  * - which range to search when port is unspecified at bind() or connect()
 529  */
 530 #define IPV6_PORTRANGE_DEFAULT  0       /* default range */
 531 #define IPV6_PORTRANGE_HIGH     1       /* "high" - request firewall bypass */
 532 #define IPV6_PORTRANGE_LOW      2       /* "low" - vouchsafe security */
 533
 534 #ifndef _XOPEN_SOURCE
 535 /*
 536  * Definitions for inet6 sysctl operations.
 537  *
 538  * Third level is protocol number.
 539  * Fourth level is desired variable within that protocol.
 540  */
 541 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1)       /* don't list to IPV6PROTO_MAX */
 542
 543 /*
 544  * Names for IP sysctl objects
 545  */
 546 #define IPV6CTL_FORWARDING      1       /* act as router */
 547 #define IPV6CTL_SENDREDIRECTS   2       /* may send redirects when forwarding*/
 548 #define IPV6CTL_DEFHLIM         3       /* default Hop-Limit */
 549 #ifdef notyet
 550 #define IPV6CTL_DEFMTU          4       /* default MTU */
 551 #endif
 552 #define IPV6CTL_FORWSRCRT       5       /* forward source-routed dgrams */
 553 #define IPV6CTL_STATS           6       /* stats */
 554 #define IPV6CTL_MRTSTATS        7       /* multicast forwarding stats */
 555 #define IPV6CTL_MRTPROTO        8       /* multicast routing protocol */
 556 #define IPV6CTL_MAXFRAGPACKETS  9       /* max packets reassembly queue */
 557 #define IPV6CTL_SOURCECHECK     10      /* verify source route and intf */
 558 #define IPV6CTL_SOURCECHECK_LOGINT 11   /* minimume logging interval */
 559 #define IPV6CTL_ACCEPT_RTADV    12
 560 #define IPV6CTL_KEEPFAITH       13
 561 #define IPV6CTL_LOG_INTERVAL    14
 562 #define IPV6CTL_HDRNESTLIMIT    15
 563 #define IPV6CTL_DAD_COUNT       16
 564 #define IPV6CTL_AUTO_FLOWLABEL  17
 565 #define IPV6CTL_DEFMCASTHLIM    18
 566 #define IPV6CTL_GIF_HLIM        19      /* default HLIM for gif encap packet */
 567 #define IPV6CTL_KAME_VERSION    20
 568 #define IPV6CTL_USE_DEPRECATED  21      /* use deprecated addr (RFC2462 5.5.4) */
 569 #define IPV6CTL_RR_PRUNE        22      /* walk timer for router renumbering */
 570 #if 0   /* obsolete */
 571 #define IPV6CTL_MAPPED_ADDR     23
 572 #define IPV6CTL_V6ONLY          24
 573 #endif
 574 #define IPV6CTL_RTEXPIRE        25      /* cloned route expiration time */
 575 #define IPV6CTL_RTMINEXPIRE     26      /* min value for expiration time */
 576 #define IPV6CTL_RTMAXCACHE      27      /* trigger level for dynamic expire */
 577
 578 #define IPV6CTL_USETEMPADDR     32      /* use temporary addresses (RFC3041) */
 579 #define IPV6CTL_TEMPPLTIME      33      /* preferred lifetime for tmpaddrs */
 580 #define IPV6CTL_TEMPVLTIME      34      /* valid lifetime for tmpaddrs */
 581 #define IPV6CTL_AUTO_LINKLOCAL  35      /* automatic link-local addr assign */
 582 #define IPV6CTL_RIP6STATS       36      /* raw_ip6 stats */
 583
 584 #define IPV6CTL_ADDRCTLPOLICY   38      /* get/set address selection policy */
 585 #define IPV6CTL_MINHLIM         39      /* minimum Hop-Limit */
 586
 587 #define IPV6CTL_MAXFRAGS        41      /* max fragments */
 588
 589 /* New entries should be added here from current IPV6CTL_MAXID value. */
 590 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 591
 592 #define ICMPV6CTL_ND6_ONLINKNSRFC4861   47
 593 #define IPV6CTL_MAXID           48
 594 #endif /* !_XOPEN_SOURCE */
 595
 596 /*
 597  * Redefinition of mbuf flags
 598  */
 599 #define M_AUTHIPHDR     M_PROTO2
 600 #define M_DECRYPTED     M_PROTO3
 601 #define M_LOOP          M_PROTO4
 602 #define M_AUTHIPDGM     M_PROTO5
 603
 604 #ifdef _KERNEL
 605
 606 struct ifnet;
 607 struct mbuf;
 608 struct sockaddr;
 609 struct sockaddr_in;
 610 struct sockaddr_in6;
 611
 612 int     in6_cksum (struct mbuf *, uint8_t, uint32_t, uint32_t);
 613 int     in6_localaddr (struct in6_addr *);
 614 int     in6_addrscope (struct in6_addr *);
 615 struct  in6_ifaddr *in6_ifawithscope (struct ifnet *, struct in6_addr *, struct ucred *);
 616 struct  in6_ifaddr *in6_ifawithifp (struct ifnet *, struct in6_addr *);
 617 void    in6_if_up (struct ifnet *);
 618
 619 void    addrsel_policy_init (void);
 620
 621 #define satosin6(sa)    ((struct sockaddr_in6 *)(sa))
 622 #define sin6tosa(sin6)  ((struct sockaddr *)(sin6))
 623 #define ifatoia6(ifa)   ((struct in6_ifaddr *)(ifa))
 624
 625 extern int (*faithprefix_p)(struct in6_addr *);
 626 #endif /* _KERNEL */
 627
 628 #include <sys/cdefs.h>          /* for __BEGIN_DECLS and __END_DECLS */
 629
 630 __BEGIN_DECLS
 631 struct cmsghdr;
 632
 633 uint8_t *inet6_option_alloc (struct cmsghdr *, int, int, int);
 634 int inet6_option_append (struct cmsghdr *, const uint8_t *, int, int);
 635 int inet6_option_find (const struct cmsghdr *, uint8_t **, int);
 636 int inet6_option_init (void *, struct cmsghdr **, int);
 637 int inet6_option_next (const struct cmsghdr *, uint8_t **);
 638 int inet6_option_space (int);
 639
 640 int inet6_opt_append (void *, socklen_t, int, uint8_t, socklen_t, uint8_t, void **);
 641 int inet6_opt_find (void *, socklen_t, int, uint8_t, socklen_t *, void **);
 642 int inet6_opt_finish (void *, socklen_t, int);
 643 int inet6_opt_get_val (void *, int, void *, socklen_t);
 644 int inet6_opt_init (void *, socklen_t);
 645 int inet6_opt_next (void *, socklen_t, int, uint8_t *, socklen_t *, void **);
 646 int inet6_opt_set_val (void *, int, void *, socklen_t);
 647
 648 int              inet6_rth_add (void *, const struct in6_addr *);
 649 struct in6_addr *inet6_rth_getaddr (const void *, int);
 650 void            *inet6_rth_init (void *, socklen_t, int, int);
 651 int              inet6_rth_reverse (const void *, void *);
 652 int              inet6_rth_segments (const void *);
 653 socklen_t        inet6_rth_space (int, int);
 654
 655 int              inet6_rthdr_add (struct cmsghdr *, const struct in6_addr *,
 656                                   unsigned int);
 657 struct in6_addr *inet6_rthdr_getaddr (struct cmsghdr *, int);
 658 int              inet6_rthdr_getflags (const struct cmsghdr *, int);
 659 struct cmsghdr  *inet6_rthdr_init (void *, int);
 660 int              inet6_rthdr_lasthop (struct cmsghdr *, unsigned int);
 661 #if 0                                   /* not implemented yet */
 662 int              inet6_rthdr_reverse (const struct cmsghdr *, struct cmsghdr *);
 663 #endif
 664 int              inet6_rthdr_segments (const struct cmsghdr *);
 665 size_t           inet6_rthdr_space (int, int);
 666 __END_DECLS
 667
 668 #endif /* !_NETINET6_IN6_H_ */