include/netinet6/in6.h

   1 /*      $NetBSD: in6.h,v 1.68 2009/09/11 22:06:29 dyoung Exp $  */
   2 /*      $KAME: in6.h,v 1.83 2001/03/29 02:55:07 jinmei 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 _NETINET6_IN6_H_
  65 #define _NETINET6_IN6_H_
  66
  67 #ifndef __KAME_NETINET_IN_H_INCLUDED_
  68 #error "do not include netinet6/in6.h directly, include netinet/in.h.  see RFC2553"
  69 #endif
  70
  71 #include <sys/socket.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          "NetBSD-current"
  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 #if defined(_NETBSD_SOURCE)
 110 #define IPV6PORT_RESERVED       1024
 111 #define IPV6PORT_ANONMIN        49152
 112 #define IPV6PORT_ANONMAX        65535
 113 #define IPV6PORT_RESERVEDMIN    600
 114 #define IPV6PORT_RESERVEDMAX    (IPV6PORT_RESERVED-1)
 115 #endif
 116
 117 /*
 118  * IPv6 address
 119  */
 120 struct in6_addr {
 121         union {
 122                 __uint8_t   __u6_addr8[16];
 123                 __uint16_t  __u6_addr16[8];
 124                 uint32_t  __u6_addr32[4];
 125         } __u6_addr;                    /* 128-bit IP6 address */
 126 };
 127
 128 #define s6_addr   __u6_addr.__u6_addr8
 129 #ifdef _KERNEL  /* XXX nonstandard */
 130 #define s6_addr8  __u6_addr.__u6_addr8
 131 #define s6_addr16 __u6_addr.__u6_addr16
 132 #define s6_addr32 __u6_addr.__u6_addr32
 133 #endif
 134
 135 #define INET6_ADDRSTRLEN        46
 136
 137 /*
 138  * Socket address for IPv6
 139  */
 140 #if defined(_NETBSD_SOURCE)
 141 #define SIN6_LEN
 142 #endif
 143 struct sockaddr_in6 {
 144 #ifndef __minix
 145         uint8_t         sin6_len;       /* length of this struct(socklen_t)*/
 146 #endif /* !__minix */
 147         sa_family_t     sin6_family;    /* AF_INET6 (sa_family_t) */
 148         in_port_t       sin6_port;      /* Transport layer port */
 149         uint32_t        sin6_flowinfo;  /* IP6 flow information */
 150         struct in6_addr sin6_addr;      /* IP6 address */
 151         uint32_t        sin6_scope_id;  /* scope zone index */
 152 };
 153
 154 #ifndef __minix
 155 /*
 156  * Local definition for masks
 157  */
 158 #ifdef _KERNEL  /* XXX nonstandard */
 159 #define IN6MASK0        {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
 160 #define IN6MASK32       {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
 161                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 162 #define IN6MASK64       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 163                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 164 #define IN6MASK96       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 165                             0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
 166 #define IN6MASK128      {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
 167                             0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
 168 #endif
 169
 170 #ifdef _KERNEL
 171 extern const struct sockaddr_in6 sa6_any;
 172
 173 extern const struct in6_addr in6mask0;
 174 extern const struct in6_addr in6mask32;
 175 extern const struct in6_addr in6mask64;
 176 extern const struct in6_addr in6mask96;
 177 extern const struct in6_addr in6mask128;
 178 #endif /* _KERNEL */
 179
 180 /*
 181  * Macros started with IPV6_ADDR is KAME local
 182  */
 183 #ifdef _KERNEL  /* XXX nonstandard */
 184 #if BYTE_ORDER == BIG_ENDIAN
 185 #define IPV6_ADDR_INT32_ONE     1
 186 #define IPV6_ADDR_INT32_TWO     2
 187 #define IPV6_ADDR_INT32_MNL     0xff010000
 188 #define IPV6_ADDR_INT32_MLL     0xff020000
 189 #define IPV6_ADDR_INT32_SMP     0x0000ffff
 190 #define IPV6_ADDR_INT16_ULL     0xfe80
 191 #define IPV6_ADDR_INT16_USL     0xfec0
 192 #define IPV6_ADDR_INT16_MLL     0xff02
 193 #elif BYTE_ORDER == LITTLE_ENDIAN
 194 #define IPV6_ADDR_INT32_ONE     0x01000000
 195 #define IPV6_ADDR_INT32_TWO     0x02000000
 196 #define IPV6_ADDR_INT32_MNL     0x000001ff
 197 #define IPV6_ADDR_INT32_MLL     0x000002ff
 198 #define IPV6_ADDR_INT32_SMP     0xffff0000
 199 #define IPV6_ADDR_INT16_ULL     0x80fe
 200 #define IPV6_ADDR_INT16_USL     0xc0fe
 201 #define IPV6_ADDR_INT16_MLL     0x02ff
 202 #endif
 203 #endif
 204 #endif /* !__minix */
 205
 206 /*
 207  * Definition of some useful macros to handle IP6 addresses
 208  */
 209 #define IN6ADDR_ANY_INIT \
 210         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 211             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
 212 #define IN6ADDR_LOOPBACK_INIT \
 213         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 214             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 215 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
 216         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 217             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 218 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
 219         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 220             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 221 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
 222         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 223             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
 224
 225 extern const struct in6_addr in6addr_any;
 226 extern const struct in6_addr in6addr_loopback;
 227 extern const struct in6_addr in6addr_nodelocal_allnodes;
 228 extern const struct in6_addr in6addr_linklocal_allnodes;
 229 extern const struct in6_addr in6addr_linklocal_allrouters;
 230
 231 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
 232     (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 233
 234 /*
 235  * Unspecified
 236  */
 237 #define IN6_IS_ADDR_UNSPECIFIED(a)      \
 238         ((a)->__u6_addr.__u6_addr32[0] == 0 &&  \
 239          (a)->__u6_addr.__u6_addr32[1] == 0 &&  \
 240          (a)->__u6_addr.__u6_addr32[2] == 0 &&  \
 241          (a)->__u6_addr.__u6_addr32[3] == 0)
 242
 243 /*
 244  * Loopback
 245  */
 246 #define IN6_IS_ADDR_LOOPBACK(a)         \
 247         ((a)->__u6_addr.__u6_addr32[0] == 0 &&  \
 248          (a)->__u6_addr.__u6_addr32[1] == 0 &&  \
 249          (a)->__u6_addr.__u6_addr32[2] == 0 &&  \
 250          (a)->__u6_addr.__u6_addr32[3] == ntohl(1))
 251
 252 /*
 253  * IPv4 compatible
 254  */
 255 #define IN6_IS_ADDR_V4COMPAT(a)         \
 256         ((a)->__u6_addr.__u6_addr32[0] == 0 &&  \
 257          (a)->__u6_addr.__u6_addr32[1] == 0 &&  \
 258          (a)->__u6_addr.__u6_addr32[2] == 0 &&  \
 259          (a)->__u6_addr.__u6_addr32[3] != 0 &&  \
 260          (a)->__u6_addr.__u6_addr32[3] != ntohl(1))
 261
 262 /*
 263  * Mapped
 264  */
 265 #define IN6_IS_ADDR_V4MAPPED(a)               \
 266         ((a)->__u6_addr.__u6_addr32[0] == 0 &&  \
 267          (a)->__u6_addr.__u6_addr32[1] == 0 &&  \
 268          (a)->__u6_addr.__u6_addr32[2] == ntohl(0x0000ffff))
 269
 270 /*
 271  * KAME Scope Values
 272  */
 273
 274 #ifdef _KERNEL  /* XXX nonstandard */
 275 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
 276 #define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01
 277 #define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
 278 #define IPV6_ADDR_SCOPE_SITELOCAL       0x05
 279 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08    /* just used in this file */
 280 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
 281 #else
 282 #define __IPV6_ADDR_SCOPE_NODELOCAL     0x01
 283 #define __IPV6_ADDR_SCOPE_LINKLOCAL     0x02
 284 #define __IPV6_ADDR_SCOPE_SITELOCAL     0x05
 285 #define __IPV6_ADDR_SCOPE_ORGLOCAL      0x08    /* just used in this file */
 286 #define __IPV6_ADDR_SCOPE_GLOBAL        0x0e
 287 #endif
 288
 289 /*
 290  * Unicast Scope
 291  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 292  */
 293 #define IN6_IS_ADDR_LINKLOCAL(a)        \
 294         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
 295 #define IN6_IS_ADDR_SITELOCAL(a)        \
 296         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
 297
 298 /*
 299  * Multicast
 300  */
 301 #define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)
 302
 303 #ifdef _KERNEL  /* XXX nonstandard */
 304 #define IPV6_ADDR_MC_SCOPE(a)           ((a)->s6_addr[1] & 0x0f)
 305 #else
 306 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 307 #endif
 308
 309 /*
 310  * Multicast Scope
 311  */
 312 #ifdef _KERNEL  /* refers nonstandard items */
 313 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 314         (IN6_IS_ADDR_MULTICAST(a) &&    \
 315          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
 316 #define IN6_IS_ADDR_MC_INTFACELOCAL(a)  \
 317         (IN6_IS_ADDR_MULTICAST(a) &&    \
 318          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
 319 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 320         (IN6_IS_ADDR_MULTICAST(a) &&    \
 321          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
 322 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 323         (IN6_IS_ADDR_MULTICAST(a) &&    \
 324          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
 325 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 326         (IN6_IS_ADDR_MULTICAST(a) &&    \
 327          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
 328 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 329         (IN6_IS_ADDR_MULTICAST(a) &&    \
 330          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
 331 #else
 332 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
 333         (IN6_IS_ADDR_MULTICAST(a) &&    \
 334          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
 335 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
 336         (IN6_IS_ADDR_MULTICAST(a) &&    \
 337          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
 338 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
 339         (IN6_IS_ADDR_MULTICAST(a) &&    \
 340          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
 341 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
 342         (IN6_IS_ADDR_MULTICAST(a) &&    \
 343          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
 344 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
 345         (IN6_IS_ADDR_MULTICAST(a) &&    \
 346          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
 347 #endif
 348
 349 #ifdef _KERNEL  /* nonstandard */
 350 /*
 351  * KAME Scope
 352  */
 353 #define IN6_IS_SCOPE_LINKLOCAL(a)       \
 354         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 355          (IN6_IS_ADDR_MC_LINKLOCAL(a)))
 356
 357 #define IN6_IS_SCOPE_EMBEDDABLE(__a)    \
 358     (IN6_IS_SCOPE_LINKLOCAL(__a) || IN6_IS_ADDR_MC_INTFACELOCAL(__a))
 359
 360 #define IFA6_IS_DEPRECATED(a) \
 361         ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
 362          (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
 363          (a)->ia6_lifetime.ia6t_pltime)
 364 #define IFA6_IS_INVALID(a) \
 365         ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
 366          (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
 367          (a)->ia6_lifetime.ia6t_vltime)
 368 #endif
 369
 370 #ifndef __minix
 371 /*
 372  * Options for use with [gs]etsockopt at the IPV6 level.
 373  * First word of comment is data type; bool is stored in int.
 374  */
 375 /* no hdrincl */
 376 #if 0
 377 /* These are deprecated non-standard options which are no longer supported. */
 378 #define IPV6_OPTIONS            1  /* buf/ip6_opts; set/get IP6 options */
 379 #define IPV6_RECVOPTS           5  /* bool; receive all IP6 opts w/dgram */
 380 #define IPV6_RECVRETOPTS        6  /* bool; receive IP6 opts for response */
 381 #define IPV6_RECVDSTADDR        7  /* bool; receive IP6 dst addr w/dgram */
 382 #define IPV6_RETOPTS            8  /* ip6_opts; set/get IP6 options */
 383 #endif
 384 #define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
 385 #define IPV6_UNICAST_HOPS       4  /* int; IP6 hops */
 386 #define IPV6_MULTICAST_IF       9  /* u_int; set/get IP6 multicast i/f  */
 387 #define IPV6_MULTICAST_HOPS     10 /* int; set/get IP6 multicast hops */
 388 #define IPV6_MULTICAST_LOOP     11 /* u_int; set/get IP6 multicast loopback */
 389 #define IPV6_JOIN_GROUP         12 /* ip6_mreq; join a group membership */
 390 #define IPV6_LEAVE_GROUP        13 /* ip6_mreq; leave a group membership */
 391 #define IPV6_PORTRANGE          14 /* int; range to choose for unspec port */
 392 #if defined(_NETBSD_SOURCE)
 393 #define ICMP6_FILTER            18 /* icmp6_filter; icmp6 filter */
 394 #endif
 395 /* RFC2292 options */
 396 #ifdef _KERNEL
 397 #define IPV6_2292PKTINFO        19 /* bool; send/recv if, src/dst addr */
 398 #define IPV6_2292HOPLIMIT       20 /* bool; hop limit */
 399 #define IPV6_2292NEXTHOP        21 /* bool; next hop addr */
 400 #define IPV6_2292HOPOPTS        22 /* bool; hop-by-hop option */
 401 #define IPV6_2292DSTOPTS        23 /* bool; destination option */
 402 #define IPV6_2292RTHDR          24 /* bool; routing header */
 403 #define IPV6_2292PKTOPTIONS     25 /* buf/cmsghdr; set/get IPv6 options */
 404 #endif
 405 #define IPV6_CHECKSUM           26 /* int; checksum offset for raw socket */
 406 #define IPV6_V6ONLY             27 /* bool; make AF_INET6 sockets v6 only */
 407
 408 #if 1 /* IPSEC */
 409 #define IPV6_IPSEC_POLICY       28 /* struct; get/set security policy */
 410 #endif
 411 #define IPV6_FAITH              29 /* bool; accept FAITH'ed connections */
 412
 413 /* new socket options introduced in RFC3542 */
 414 #define IPV6_RTHDRDSTOPTS       35 /* ip6_dest; send dst option before rthdr */
 415
 416 #define IPV6_RECVPKTINFO        36 /* bool; recv if, dst addr */
 417 #define IPV6_RECVHOPLIMIT       37 /* bool; recv hop limit */
 418 #define IPV6_RECVRTHDR          38 /* bool; recv routing header */
 419 #define IPV6_RECVHOPOPTS        39 /* bool; recv hop-by-hop option */
 420 #define IPV6_RECVDSTOPTS        40 /* bool; recv dst option after rthdr */
 421 #ifdef _KERNEL
 422 #define IPV6_RECVRTHDRDSTOPTS   41 /* bool; recv dst option before rthdr */
 423 #endif
 424 #define IPV6_USE_MIN_MTU        42 /* bool; send packets at the minimum MTU */
 425 #define IPV6_RECVPATHMTU        43 /* bool; notify an according MTU */
 426 #define IPV6_PATHMTU            44 /* mtuinfo; get the current path MTU (sopt),
 427                                       4 bytes int; MTU notification (cmsg) */
 428
 429 /* more new socket options introduced in RFC3542 */
 430 #define IPV6_PKTINFO            46 /* in6_pktinfo; send if, src addr */
 431 #define IPV6_HOPLIMIT           47 /* int; send hop limit */
 432 #define IPV6_NEXTHOP            48 /* sockaddr; next hop addr */
 433 #define IPV6_HOPOPTS            49 /* ip6_hbh; send hop-by-hop option */
 434 #define IPV6_DSTOPTS            50 /* ip6_dest; send dst option befor rthdr */
 435 #define IPV6_RTHDR              51 /* ip6_rthdr; send routing header */
 436
 437 #define IPV6_RECVTCLASS         57 /* bool; recv traffic class values */
 438 #ifdef _KERNEL
 439 #define IPV6_OTCLASS            58 /* u_int8_t; send traffic class value */
 440 #endif
 441
 442 #define IPV6_TCLASS             61 /* int; send traffic class value */
 443 #define IPV6_DONTFRAG           62 /* bool; disable IPv6 fragmentation */
 444 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 445
 446 #define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
 447 #define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
 448 #define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */
 449
 450 /*
 451  * Defaults and limits for options
 452  */
 453 #define IPV6_DEFAULT_MULTICAST_HOPS 1   /* normally limit m'casts to 1 hop  */
 454 #define IPV6_DEFAULT_MULTICAST_LOOP 1   /* normally hear sends if a member  */
 455
 456 /*
 457  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 458  */
 459 struct ipv6_mreq {
 460         struct in6_addr ipv6mr_multiaddr;
 461         unsigned int    ipv6mr_interface;
 462 };
 463
 464 /*
 465  * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
 466  */
 467 struct in6_pktinfo {
 468         struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
 469         unsigned int    ipi6_ifindex;   /* send/recv interface index */
 470 };
 471
 472 /*
 473  * Control structure for IPV6_RECVPATHMTU socket option.
 474  */
 475 struct ip6_mtuinfo {
 476         struct sockaddr_in6 ip6m_addr;  /* or sockaddr_storage? */
 477         uint32_t ip6m_mtu;
 478 };
 479
 480 /*
 481  * Argument for IPV6_PORTRANGE:
 482  * - which range to search when port is unspecified at bind() or connect()
 483  */
 484 #define IPV6_PORTRANGE_DEFAULT  0       /* default range */
 485 #define IPV6_PORTRANGE_HIGH     1       /* "high" - request firewall bypass */
 486 #define IPV6_PORTRANGE_LOW      2       /* "low" - vouchsafe security */
 487
 488 #if defined(_NETBSD_SOURCE)
 489 /*
 490  * Definitions for inet6 sysctl operations.
 491  *
 492  * Third level is protocol number.
 493  * Fourth level is desired variable within that protocol.
 494  */
 495 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1)       /* don't list to IPV6PROTO_MAX */
 496
 497 #define CTL_IPV6PROTO_NAMES { \
 498         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 499         { 0, 0 }, \
 500         { "tcp6", 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         { 0, 0 }, \
 507         { "udp6", CTLTYPE_NODE }, \
 508         { 0, 0 }, \
 509         { 0, 0 }, \
 510         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 511         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 512         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 513         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 514         { 0, 0 }, \
 515         { "ip6", CTLTYPE_NODE }, \
 516         { 0, 0 }, \
 517         { 0, 0 }, \
 518         { 0, 0 }, \
 519         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 520         { 0, 0 }, \
 521         { "ipsec6", CTLTYPE_NODE }, \
 522         { 0, 0 }, \
 523         { 0, 0 }, \
 524         { 0, 0 }, \
 525         { 0, 0 }, \
 526         { 0, 0 }, \
 527         { 0, 0 }, \
 528         { "icmp6", CTLTYPE_NODE }, \
 529         { 0, 0 }, \
 530         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 531         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 532         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 533         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 534         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 535         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 536         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 537         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 538         { 0, 0 }, \
 539         { 0, 0 }, \
 540         { 0, 0 }, \
 541         { "pim6", CTLTYPE_NODE }, \
 542 }
 543
 544 /*
 545  * Names for IP sysctl objects
 546  */
 547 #define IPV6CTL_FORWARDING      1       /* act as router */
 548 #define IPV6CTL_SENDREDIRECTS   2       /* may send redirects when forwarding*/
 549 #define IPV6CTL_DEFHLIM         3       /* default Hop-Limit */
 550 #ifdef notyet
 551 #define IPV6CTL_DEFMTU          4       /* default MTU */
 552 #endif
 553 #define IPV6CTL_FORWSRCRT       5       /* forward source-routed dgrams */
 554 #define IPV6CTL_STATS           6       /* stats */
 555 #define IPV6CTL_MRTSTATS        7       /* multicast forwarding stats */
 556 #define IPV6CTL_MRTPROTO        8       /* multicast routing protocol */
 557 #define IPV6CTL_MAXFRAGPACKETS  9       /* max packets reassembly queue */
 558 #define IPV6CTL_SOURCECHECK     10      /* verify source route and intf */
 559 #define IPV6CTL_SOURCECHECK_LOGINT 11   /* minimume logging interval */
 560 #define IPV6CTL_ACCEPT_RTADV    12
 561 #define IPV6CTL_KEEPFAITH       13
 562 #define IPV6CTL_LOG_INTERVAL    14
 563 #define IPV6CTL_HDRNESTLIMIT    15
 564 #define IPV6CTL_DAD_COUNT       16
 565 #define IPV6CTL_AUTO_FLOWLABEL  17
 566 #define IPV6CTL_DEFMCASTHLIM    18
 567 #define IPV6CTL_GIF_HLIM        19      /* default HLIM for gif encap packet */
 568 #define IPV6CTL_KAME_VERSION    20
 569 #define IPV6CTL_USE_DEPRECATED  21      /* use deprecated addr (RFC2462 5.5.4) */
 570 #define IPV6CTL_RR_PRUNE        22      /* walk timer for router renumbering */
 571 /* 23: reserved */
 572 #define IPV6CTL_V6ONLY          24
 573 /* 25 to 27: reserved */
 574 #define IPV6CTL_ANONPORTMIN     28      /* minimum ephemeral port */
 575 #define IPV6CTL_ANONPORTMAX     29      /* maximum ephemeral port */
 576 #define IPV6CTL_LOWPORTMIN      30      /* minimum reserved port */
 577 #define IPV6CTL_LOWPORTMAX      31      /* maximum reserved port */
 578 /* 32 to 38: reserved */
 579 #define IPV6CTL_USE_DEFAULTZONE 39      /* use default scope zone */
 580 /* 40: reserved */
 581 #define IPV6CTL_MAXFRAGS        41      /* max fragments */
 582 #define IPV6CTL_IFQ             42      /* ip6intrq node */
 583 /* New entries should be added here from current IPV6CTL_MAXID value. */
 584 /* to define items, should talk with KAME guys first, for *BSD compatibility */
 585 #define IPV6CTL_MAXID           43
 586
 587 #define IPV6CTL_NAMES { \
 588         { 0, 0 }, \
 589         { "forwarding", CTLTYPE_INT }, \
 590         { "redirect", CTLTYPE_INT }, \
 591         { "hlim", CTLTYPE_INT }, \
 592         { "mtu", CTLTYPE_INT }, \
 593         { "forwsrcrt", CTLTYPE_INT }, \
 594         { "stats", CTLTYPE_STRUCT }, \
 595         { 0, 0 }, \
 596         { "mrtproto", CTLTYPE_INT }, \
 597         { "maxfragpackets", CTLTYPE_INT }, \
 598         { "sourcecheck", CTLTYPE_INT }, \
 599         { "sourcecheck_logint", CTLTYPE_INT }, \
 600         { "accept_rtadv", CTLTYPE_INT }, \
 601         { "keepfaith", CTLTYPE_INT }, \
 602         { "log_interval", CTLTYPE_INT }, \
 603         { "hdrnestlimit", CTLTYPE_INT }, \
 604         { "dad_count", CTLTYPE_INT }, \
 605         { "auto_flowlabel", CTLTYPE_INT }, \
 606         { "defmcasthlim", CTLTYPE_INT }, \
 607         { "gifhlim", CTLTYPE_INT }, \
 608         { "kame_version", CTLTYPE_STRING }, \
 609         { "use_deprecated", CTLTYPE_INT }, \
 610         { "rr_prune", CTLTYPE_INT }, \
 611         { 0, 0 }, \
 612         { "v6only", CTLTYPE_INT }, \
 613         { 0, 0 }, \
 614         { 0, 0 }, \
 615         { 0, 0 }, \
 616         { "anonportmin", CTLTYPE_INT }, \
 617         { "anonportmax", CTLTYPE_INT }, \
 618         { "lowportmin", CTLTYPE_INT }, \
 619         { "lowportmax", CTLTYPE_INT }, \
 620         { 0, 0 }, \
 621         { 0, 0 }, \
 622         { 0, 0 }, \
 623         { 0, 0 }, \
 624         { 0, 0 }, \
 625         { 0, 0 }, \
 626         { 0, 0 }, \
 627         { 0, 0 }, \
 628         { 0, 0 }, \
 629         { "maxfrags", CTLTYPE_INT }, \
 630         { "ifq", CTLTYPE_NODE }, \
 631 }
 632
 633 #endif /* _NETBSD_SOURCE */
 634
 635 #ifdef _KERNEL
 636 struct cmsghdr;
 637
 638 /*
 639  * in6_cksum_phdr:
 640  *
 641  *      Compute significant parts of the IPv6 checksum pseudo-header
 642  *      for use in a delayed TCP/UDP checksum calculation.
 643  *
 644  *      Args:
 645  *
 646  *              src             Source IPv6 address
 647  *              dst             Destination IPv6 address
 648  *              len             htonl(proto-hdr-len)
 649  *              nxt             htonl(next-proto-number)
 650  *
 651  *      NOTE: We expect the src and dst addresses to be 16-bit
 652  *      aligned!
 653  */
 654 static __inline u_int16_t __unused
 655 in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst,
 656     u_int32_t len, u_int32_t nxt)
 657 {
 658         u_int32_t sum = 0;
 659         const u_int16_t *w;
 660
 661         /*LINTED*/
 662         w = (const u_int16_t *) src;
 663         sum += w[0];
 664         if (!IN6_IS_SCOPE_LINKLOCAL(src))
 665                 sum += w[1];
 666         sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
 667         sum += w[6]; sum += w[7];
 668
 669         /*LINTED*/
 670         w = (const u_int16_t *) dst;
 671         sum += w[0];
 672         if (!IN6_IS_SCOPE_LINKLOCAL(dst))
 673                 sum += w[1];
 674         sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
 675         sum += w[6]; sum += w[7];
 676
 677         sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/);
 678
 679         sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/);
 680
 681         sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/);
 682
 683         if (sum > 0xffff)
 684                 sum -= 0xffff;
 685
 686         return (sum);
 687 }
 688
 689 struct mbuf;
 690 struct ifnet;
 691 int sockaddr_in6_cmp(const struct sockaddr *, const struct sockaddr *);
 692 struct sockaddr *sockaddr_in6_externalize(struct sockaddr *, socklen_t,
 693     const struct sockaddr *);
 694 int     in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t);
 695 void    in6_delayed_cksum(struct mbuf *);
 696 int     in6_localaddr(const struct in6_addr *);
 697 int     in6_addrscope(const struct in6_addr *);
 698 struct  in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
 699 extern void in6_if_up(struct ifnet *);
 700 #ifndef __FreeBSD__
 701 extern int in6_src_sysctl(void *, size_t *, void *, size_t);
 702 #endif
 703 extern void addrsel_policy_init(void);
 704 extern  u_char  ip6_protox[];
 705
 706 #define satosin6(sa)    ((struct sockaddr_in6 *)(sa))
 707 #define satocsin6(sa)   ((const struct sockaddr_in6 *)(sa))
 708 #define sin6tosa(sin6)  ((struct sockaddr *)(sin6))
 709 #define sin6tocsa(sin6) ((const struct sockaddr *)(sin6))
 710 #define ifatoia6(ifa)   ((struct in6_ifaddr *)(ifa))
 711
 712 static inline void
 713 sockaddr_in6_init1(struct sockaddr_in6 *sin6, const struct in6_addr *addr,
 714     in_port_t port, uint32_t flowinfo, uint32_t scope_id)
 715 {
 716         sin6->sin6_port = port;
 717         sin6->sin6_flowinfo = flowinfo;
 718         sin6->sin6_addr = *addr;
 719         sin6->sin6_scope_id = scope_id;
 720 }
 721
 722 static inline void
 723 sockaddr_in6_init(struct sockaddr_in6 *sin6, const struct in6_addr *addr,
 724     in_port_t port, uint32_t flowinfo, uint32_t scope_id)
 725 {
 726         sin6->sin6_family = AF_INET6;
 727         sin6->sin6_len = sizeof(*sin6);
 728         sockaddr_in6_init1(sin6, addr, port, flowinfo, scope_id);
 729 }
 730
 731 static inline struct sockaddr *
 732 sockaddr_in6_alloc(const struct in6_addr *addr, in_port_t port,
 733     uint32_t flowinfo, uint32_t scope_id, int flags)
 734 {
 735         struct sockaddr *sa;
 736
 737         if ((sa = sockaddr_alloc(AF_INET6, sizeof(struct sockaddr_in6),
 738             flags)) == NULL)
 739                 return NULL;
 740
 741         sockaddr_in6_init1(satosin6(sa), addr, port, flowinfo, scope_id);
 742
 743         return sa;
 744 }
 745 #endif /* _KERNEL */
 746
 747 #if defined(_NETBSD_SOURCE)
 748
 749 #include <machine/ansi.h>
 750
 751 #ifdef  _BSD_SIZE_T_
 752 typedef _BSD_SIZE_T_            size_t;
 753 #define _SIZE_T
 754 #undef  _BSD_SIZE_T_
 755 #endif
 756
 757 #include <sys/cdefs.h>
 758
 759 __BEGIN_DECLS
 760 struct cmsghdr;
 761
 762 void    in6_sin6_2_sin(struct sockaddr_in *, struct sockaddr_in6 *);
 763 void    in6_sin_2_v4mapsin6(struct sockaddr_in *, struct sockaddr_in6 *);
 764 void    in6_sin6_2_sin_in_sock(struct sockaddr *);
 765 void    in6_sin_2_v4mapsin6_in_sock(struct sockaddr **);
 766
 767 extern int inet6_option_space(int);
 768 extern int inet6_option_init(void *, struct cmsghdr **, int);
 769 extern int inet6_option_append(struct cmsghdr *, const uint8_t *,
 770         int, int);
 771 extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
 772 extern int inet6_option_next(const struct cmsghdr *, uint8_t **);
 773 extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int);
 774
 775 extern size_t inet6_rthdr_space(int, int);
 776 extern struct cmsghdr *inet6_rthdr_init(void *, int);
 777 extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
 778                 unsigned int);
 779 extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
 780 #if 0 /* not implemented yet */
 781 extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
 782 #endif
 783 extern int inet6_rthdr_segments(const struct cmsghdr *);
 784 extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
 785 extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
 786
 787 extern int inet6_opt_init(void *, socklen_t);
 788 extern int inet6_opt_append(void *, socklen_t, int, uint8_t,
 789                 socklen_t, uint8_t, void **);
 790 extern int inet6_opt_finish(void *, socklen_t, int);
 791 extern int inet6_opt_set_val(void *, int, void *, socklen_t);
 792
 793 extern int inet6_opt_next(void *, socklen_t, int, uint8_t *,
 794                 socklen_t *, void **);
 795 extern int inet6_opt_find(void *, socklen_t, int, uint8_t,
 796                 socklen_t *, void **);
 797 extern int inet6_opt_get_val(void *, int, void *, socklen_t);
 798 extern socklen_t inet6_rth_space(int, int);
 799 extern void *inet6_rth_init(void *, socklen_t, int, int);
 800 extern int inet6_rth_add(void *, const struct in6_addr *);
 801 extern int inet6_rth_reverse(const void *, void *);
 802 extern int inet6_rth_segments(const void *);
 803 extern struct in6_addr *inet6_rth_getaddr(const void *, int);
 804 __END_DECLS
 805 #endif /* _NETBSD_SOURCE */
 806 #endif /* !__minix */
 807
 808 #endif /* !_NETINET6_IN6_H_ */