bsd/netinet6/in6_var.h

   1 /*
   2  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the project nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 /*
  31  * Copyright (c) 1985, 1986, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)in_var.h    8.1 (Berkeley) 6/10/93
  63  */
  64
  65 #ifndef _NETINET6_IN6_VAR_H_
  66 #define _NETINET6_IN6_VAR_H_
  67
  68 /*
  69  * Interface address, Internet version.  One of these structures
  70  * is allocated for each interface with an Internet address.
  71  * The ifaddr structure contains the protocol-independent part
  72  * of the structure and is assumed to be first.
  73  */
  74
  75 /*
  76  * pltime/vltime are just for future reference (required to implements 2
  77  * hour rule for hosts).  they should never be modified by nd6_timeout or
  78  * anywhere else.
  79  *      userland -> kernel: accept pltime/vltime
  80  *      kernel -> userland: throuw up everything
  81  *      in kernel: modify preferred/expire only
  82  */
  83 struct in6_addrlifetime {
  84         time_t ia6t_expire;     /* valid lifetime expiration time */
  85         time_t ia6t_preferred;  /* preferred lifetime expiration time */
  86         u_int32_t ia6t_vltime;  /* valid lifetime */
  87         u_int32_t ia6t_pltime;  /* prefix lifetime */
  88 };
  89
  90 struct  in6_ifaddr {
  91         struct  ifaddr ia_ifa;          /* protocol-independent info */
  92 #define ia_ifp          ia_ifa.ifa_ifp
  93 #define ia_flags        ia_ifa.ifa_flags
  94         struct  sockaddr_in6 ia_addr;   /* interface address */
  95         struct  sockaddr_in6 ia_net;    /* network number of interface */
  96         struct  sockaddr_in6 ia_dstaddr; /* space for destination addr */
  97         struct  sockaddr_in6 ia_prefixmask; /* prefix mask */
  98         u_int32_t ia_plen;              /* prefix length */
  99         struct  in6_ifaddr *ia_next;    /* next in6 list of IP6 addresses */
 100 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__APPLE__)
 101         LIST_HEAD(in6_multihead, in6_multi) ia6_multiaddrs;
 102                                         /* list of multicast addresses */
 103 #endif
 104         int     ia6_flags;
 105
 106         struct in6_addrlifetime ia6_lifetime;   /* NULL = infty */
 107         struct ifprefix *ia6_ifpr; /* back pointer to ifprefix */
 108 };
 109
 110 /*
 111  * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
 112  */
 113 struct in6_ifstat {
 114         u_quad_t ifs6_in_receive;       /* # of total input datagram */
 115         u_quad_t ifs6_in_hdrerr;        /* # of datagrams with invalid hdr */
 116         u_quad_t ifs6_in_toobig;        /* # of datagrams exceeded MTU */
 117         u_quad_t ifs6_in_noroute;       /* # of datagrams with no route */
 118         u_quad_t ifs6_in_addrerr;       /* # of datagrams with invalid dst */
 119         u_quad_t ifs6_in_protounknown;  /* # of datagrams with unknown proto */
 120                                         /* NOTE: increment on final dst if */
 121         u_quad_t ifs6_in_truncated;     /* # of truncated datagrams */
 122         u_quad_t ifs6_in_discard;       /* # of discarded datagrams */
 123                                         /* NOTE: fragment timeout is not here */
 124         u_quad_t ifs6_in_deliver;       /* # of datagrams delivered to ULP */
 125                                         /* NOTE: increment on final dst if */
 126         u_quad_t ifs6_out_forward;      /* # of datagrams forwarded */
 127                                         /* NOTE: increment on outgoing if */
 128         u_quad_t ifs6_out_request;      /* # of outgoing datagrams from ULP */
 129                                         /* NOTE: does not include forwrads */
 130         u_quad_t ifs6_out_discard;      /* # of discarded datagrams */
 131         u_quad_t ifs6_out_fragok;       /* # of datagrams fragmented */
 132         u_quad_t ifs6_out_fragfail;     /* # of datagrams failed on fragment */
 133         u_quad_t ifs6_out_fragcreat;    /* # of fragment datagrams */
 134                                         /* NOTE: this is # after fragment */
 135         u_quad_t ifs6_reass_reqd;       /* # of incoming fragmented packets */
 136                                         /* NOTE: increment on final dst if */
 137         u_quad_t ifs6_reass_ok;         /* # of reassembled packets */
 138                                         /* NOTE: this is # after reass */
 139                                         /* NOTE: increment on final dst if */
 140         u_quad_t ifs6_reass_fail;       /* # of reass failures */
 141                                         /* NOTE: may not be packet count */
 142                                         /* NOTE: increment on final dst if */
 143         u_quad_t ifs6_in_mcast;         /* # of inbound multicast datagrams */
 144         u_quad_t ifs6_out_mcast;        /* # of outbound multicast datagrams */
 145 };
 146
 147 /*
 148  * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
 149  * XXX: I'm not sure if this file is the right place for this structure...
 150  */
 151 struct icmp6_ifstat {
 152         /*
 153          * Input statistics
 154          */
 155         /* ipv6IfIcmpInMsgs, total # of input messages */
 156         u_quad_t ifs6_in_msg;
 157         /* ipv6IfIcmpInErrors, # of input error messages */
 158         u_quad_t ifs6_in_error;
 159         /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
 160         u_quad_t ifs6_in_dstunreach;
 161         /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
 162         u_quad_t ifs6_in_adminprohib;
 163         /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
 164         u_quad_t ifs6_in_timeexceed;
 165         /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
 166         u_quad_t ifs6_in_paramprob;
 167         /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
 168         u_quad_t ifs6_in_pkttoobig;
 169         /* ipv6IfIcmpInEchos, # of input echo requests */
 170         u_quad_t ifs6_in_echo;
 171         /* ipv6IfIcmpInEchoReplies, # of input echo replies */
 172         u_quad_t ifs6_in_echoreply;
 173         /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
 174         u_quad_t ifs6_in_routersolicit;
 175         /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
 176         u_quad_t ifs6_in_routeradvert;
 177         /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
 178         u_quad_t ifs6_in_neighborsolicit;
 179         /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
 180         u_quad_t ifs6_in_neighboradvert;
 181         /* ipv6IfIcmpInRedirects, # of input redirects */
 182         u_quad_t ifs6_in_redirect;
 183         /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
 184         u_quad_t ifs6_in_mldquery;
 185         /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
 186         u_quad_t ifs6_in_mldreport;
 187         /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
 188         u_quad_t ifs6_in_mlddone;
 189
 190         /*
 191          * Output statistics. We should solve unresolved routing problem...
 192          */
 193         /* ipv6IfIcmpOutMsgs, total # of output messages */
 194         u_quad_t ifs6_out_msg;
 195         /* ipv6IfIcmpOutErrors, # of output error messages */
 196         u_quad_t ifs6_out_error;
 197         /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
 198         u_quad_t ifs6_out_dstunreach;
 199         /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
 200         u_quad_t ifs6_out_adminprohib;
 201         /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
 202         u_quad_t ifs6_out_timeexceed;
 203         /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
 204         u_quad_t ifs6_out_paramprob;
 205         /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
 206         u_quad_t ifs6_out_pkttoobig;
 207         /* ipv6IfIcmpOutEchos, # of output echo requests */
 208         u_quad_t ifs6_out_echo;
 209         /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
 210         u_quad_t ifs6_out_echoreply;
 211         /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
 212         u_quad_t ifs6_out_routersolicit;
 213         /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
 214         u_quad_t ifs6_out_routeradvert;
 215         /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
 216         u_quad_t ifs6_out_neighborsolicit;
 217         /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
 218         u_quad_t ifs6_out_neighboradvert;
 219         /* ipv6IfIcmpOutRedirects, # of output redirects */
 220         u_quad_t ifs6_out_redirect;
 221         /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
 222         u_quad_t ifs6_out_mldquery;
 223         /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
 224         u_quad_t ifs6_out_mldreport;
 225         /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
 226         u_quad_t ifs6_out_mlddone;
 227 };
 228
 229 struct  in6_ifreq {
 230         char    ifr_name[IFNAMSIZ];
 231         union {
 232                 struct  sockaddr_in6 ifru_addr;
 233                 struct  sockaddr_in6 ifru_dstaddr;
 234                 short   ifru_flags;
 235                 int     ifru_flags6;
 236                 int     ifru_metric;
 237                 caddr_t ifru_data;
 238                 struct in6_addrlifetime ifru_lifetime;
 239                 struct in6_ifstat ifru_stat;
 240                 struct icmp6_ifstat ifru_icmp6stat;
 241         } ifr_ifru;
 242 };
 243
 244 struct  in6_aliasreq {
 245         char    ifra_name[IFNAMSIZ];
 246         struct  sockaddr_in6 ifra_addr;
 247         struct  sockaddr_in6 ifra_dstaddr;
 248         struct  sockaddr_in6 ifra_prefixmask;
 249         int     ifra_flags;
 250         struct in6_addrlifetime ifra_lifetime;
 251 };
 252
 253 /* prefix type macro */
 254 #define IN6_PREFIX_ND   1
 255 #define IN6_PREFIX_RR   2
 256
 257 /*
 258  * prefix related flags passed between kernel(NDP related part) and
 259  * user land command(ifconfig) and daemon(rtadvd).
 260  */
 261 struct in6_prflags {
 262         struct prf_ra {
 263                 u_char onlink : 1;
 264                 u_char autonomous : 1;
 265                 u_char reserved : 6;
 266         } prf_ra;
 267         u_char prf_reserved1;
 268         u_short prf_reserved2;
 269         /* want to put this on 4byte offset */
 270         struct prf_rr {
 271                 u_char decrvalid : 1;
 272                 u_char decrprefd : 1;
 273                 u_char reserved : 6;
 274         } prf_rr;
 275         u_char prf_reserved3;
 276         u_short prf_reserved4;
 277 };
 278
 279 struct  in6_prefixreq {
 280         char    ipr_name[IFNAMSIZ];
 281         u_char  ipr_origin;
 282         u_char  ipr_plen;
 283         u_int32_t ipr_vltime;
 284         u_int32_t ipr_pltime;
 285         struct in6_prflags ipr_flags;
 286         struct  sockaddr_in6 ipr_prefix;
 287 };
 288
 289 #define PR_ORIG_RA      0
 290 #define PR_ORIG_RR      1
 291 #define PR_ORIG_STATIC  2
 292 #define PR_ORIG_KERNEL  3
 293
 294 #define ipr_raf_onlink          ipr_flags.prf_ra.onlink
 295 #define ipr_raf_auto            ipr_flags.prf_ra.autonomous
 296
 297 #define ipr_statef_onlink       ipr_flags.prf_state.onlink
 298
 299 #define ipr_rrf_decrvalid       ipr_flags.prf_rr.decrvalid
 300 #define ipr_rrf_decrprefd       ipr_flags.prf_rr.decrprefd
 301
 302 struct  in6_rrenumreq {
 303         char    irr_name[IFNAMSIZ];
 304         u_char  irr_origin;
 305         u_char  irr_m_len;      /* match len for matchprefix */
 306         u_char  irr_m_minlen;   /* minlen for matching prefix */
 307         u_char  irr_m_maxlen;   /* maxlen for matching prefix */
 308         u_char  irr_u_uselen;   /* uselen for adding prefix */
 309         u_char  irr_u_keeplen;  /* keeplen from matching prefix */
 310         struct irr_raflagmask {
 311                 u_char onlink : 1;
 312                 u_char autonomous : 1;
 313                 u_char reserved : 6;
 314         } irr_raflagmask;
 315         u_int32_t irr_vltime;
 316         u_int32_t irr_pltime;
 317         struct in6_prflags irr_flags;
 318         struct  sockaddr_in6 irr_matchprefix;
 319         struct  sockaddr_in6 irr_useprefix;
 320 };
 321
 322 #define irr_raf_mask_onlink     irr_raflagmask.onlink
 323 #define irr_raf_mask_auto       irr_raflagmask.autonomous
 324 #define irr_raf_mask_reserved   irr_raflagmask.reserved
 325
 326 #define irr_raf_onlink          irr_flags.prf_ra.onlink
 327 #define irr_raf_auto            irr_flags.prf_ra.autonomous
 328
 329 #define irr_statef_onlink       irr_flags.prf_state.onlink
 330
 331 #define irr_rrf                 irr_flags.prf_rr
 332 #define irr_rrf_decrvalid       irr_flags.prf_rr.decrvalid
 333 #define irr_rrf_decrprefd       irr_flags.prf_rr.decrprefd
 334
 335 /*
 336  * Given a pointer to an in6_ifaddr (ifaddr),
 337  * return a pointer to the addr as a sockaddr_in6
 338  */
 339 #define IA6_IN6(ia)     (&((ia)->ia_addr.sin6_addr))
 340 #define IA6_DSTIN6(ia)  (&((ia)->ia_dstaddr.sin6_addr))
 341 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
 342 #define IA6_SIN6(ia)    (&((ia)->ia_addr))
 343 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
 344 #define IFA_IN6(x)      (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
 345 #define IFA_DSTIN6(x)   (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
 346
 347 #define IFPR_IN6(x)     (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
 348
 349 #ifdef KERNEL
 350 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m)      (       \
 351         (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
 352         (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
 353         (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
 354         (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
 355 #endif
 356
 357 #define SIOCSIFADDR_IN6          _IOW('i', 12, struct in6_ifreq)
 358 #define SIOCGIFADDR_IN6         _IOWR('i', 33, struct in6_ifreq)
 359
 360 #ifdef KERNEL
 361 /*
 362  * SIOCSxxx ioctls should be unused (see comments in in6.c), but
 363  * we do not shift numbers for binary compatibility.
 364  */
 365 #define SIOCSIFDSTADDR_IN6       _IOW('i', 14, struct in6_ifreq)
 366 #define SIOCSIFNETMASK_IN6       _IOW('i', 22, struct in6_ifreq)
 367 #endif
 368
 369 #define SIOCGIFDSTADDR_IN6      _IOWR('i', 34, struct in6_ifreq)
 370 #define SIOCGIFNETMASK_IN6      _IOWR('i', 37, struct in6_ifreq)
 371
 372 #define SIOCDIFADDR_IN6          _IOW('i', 25, struct in6_ifreq)
 373 #define SIOCAIFADDR_IN6          _IOW('i', 26, struct in6_aliasreq)
 374
 375 #define SIOCSIFPHYADDR_IN6       _IOW('i', 70, struct in6_aliasreq)
 376 #define SIOCGIFPSRCADDR_IN6     _IOWR('i', 71, struct in6_ifreq)
 377 #define SIOCGIFPDSTADDR_IN6     _IOWR('i', 72, struct in6_ifreq)
 378
 379 #define SIOCGIFAFLAG_IN6        _IOWR('i', 73, struct in6_ifreq)
 380
 381 #define SIOCGDRLST_IN6          _IOWR('i', 74, struct in6_drlist)
 382 #define SIOCGPRLST_IN6          _IOWR('i', 75, struct in6_prlist)
 383 #define SIOCGIFINFO_IN6         _IOWR('i', 76, struct in6_ndireq)
 384 #define SIOCSNDFLUSH_IN6        _IOWR('i', 77, struct in6_ifreq)
 385 #define SIOCGNBRINFO_IN6        _IOWR('i', 78, struct in6_nbrinfo)
 386 #define SIOCSPFXFLUSH_IN6       _IOWR('i', 79, struct in6_ifreq)
 387 #define SIOCSRTRFLUSH_IN6       _IOWR('i', 80, struct in6_ifreq)
 388
 389 #define SIOCGIFALIFETIME_IN6    _IOWR('i', 81, struct in6_ifreq)
 390 #define SIOCSIFALIFETIME_IN6    _IOWR('i', 82, struct in6_ifreq)
 391 #define SIOCGIFSTAT_IN6         _IOWR('i', 83, struct in6_ifreq)
 392 #define SIOCGIFSTAT_ICMP6       _IOWR('i', 84, struct in6_ifreq)
 393
 394 #define SIOCSDEFIFACE_IN6       _IOWR('i', 85, struct in6_ndifreq)
 395 #define SIOCGDEFIFACE_IN6       _IOWR('i', 86, struct in6_ndifreq)
 396
 397 #define SIOCSIFINFO_FLAGS       _IOWR('i', 87, struct in6_ndireq) /* XXX */
 398
 399 #define SIOCSIFPREFIX_IN6       _IOW('i', 100, struct in6_prefixreq) /* set */
 400 #define SIOCGIFPREFIX_IN6       _IOWR('i', 101, struct in6_prefixreq) /* get */
 401 #define SIOCDIFPREFIX_IN6       _IOW('i', 102, struct in6_prefixreq) /* del */
 402 #define SIOCAIFPREFIX_IN6       _IOW('i', 103, struct in6_rrenumreq) /* add */
 403 #define SIOCCIFPREFIX_IN6       _IOW('i', 104, \
 404                                      struct in6_rrenumreq) /* change */
 405 #define SIOCSGIFPREFIX_IN6      _IOW('i', 105, \
 406                                      struct in6_rrenumreq) /* set global */
 407
 408 #define SIOCGETSGCNT_IN6        _IOWR('u', 106, \
 409                                       struct sioc_sg_req6) /* get s,g pkt cnt */
 410 #define SIOCGETMIFCNT_IN6       _IOWR('u', 107, \
 411                                       struct sioc_mif_req6) /* get pkt cnt per if */
 412
 413 #define IN6_IFF_ANYCAST         0x01    /* anycast address */
 414 #define IN6_IFF_TENTATIVE       0x02    /* tentative address */
 415 #define IN6_IFF_DUPLICATED      0x04    /* DAD detected duplicate */
 416 #define IN6_IFF_DETACHED        0x08    /* may be detached from the link */
 417 #define IN6_IFF_DEPRECATED      0x10    /* deprecated address */
 418 #define IN6_IFF_NODAD           0x20    /* don't perform DAD on this address
 419                                          * (used only at first SIOC* call)
 420                                          */
 421
 422 /* do not input/output */
 423 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
 424
 425 #ifdef KERNEL
 426 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
 427 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
 428 #endif
 429
 430 #ifdef KERNEL
 431 extern struct in6_ifaddr *in6_ifaddr;
 432
 433 extern struct in6_ifstat **in6_ifstat;
 434 extern size_t in6_ifstatmax;
 435 extern struct icmp6stat icmp6stat;
 436 extern struct icmp6_ifstat **icmp6_ifstat;
 437 extern size_t icmp6_ifstatmax;
 438 #define in6_ifstat_inc(ifp, tag) \
 439 do {                                                            \
 440         if ((ifp) && (ifp)->if_index <= if_index                \
 441          && (ifp)->if_index < in6_ifstatmax                     \
 442          && in6_ifstat && in6_ifstat[(ifp)->if_index]) {        \
 443                 in6_ifstat[(ifp)->if_index]->tag++;             \
 444         }                                                       \
 445 } while (0)
 446
 447 extern struct ifqueue ip6intrq;         /* IP6 packet input queue */
 448 extern struct in6_addr zeroin6_addr;
 449 extern u_char inet6ctlerrmap[];
 450 extern unsigned long in6_maxmtu;
 451 #if defined(__FreeBSD__) && __FreeBSD__ >= 3
 452 #ifdef MALLOC_DECLARE
 453 MALLOC_DECLARE(M_IPMADDR);
 454 #endif /* MALLOC_DECLARE */
 455 #endif
 456
 457 /*
 458  * Macro for finding the internet address structure (in6_ifaddr) corresponding
 459  * to a given interface (ifnet structure).
 460  */
 461 #if defined(__bsdi__) || (defined(__FreeBSD__) && __FreeBSD__ < 3)
 462
 463 #define IFP_TO_IA6(ifp, ia)                             \
 464 /* struct ifnet *ifp; */                                \
 465 /* struct in6_ifaddr *ia; */                            \
 466 do {                                                                    \
 467         struct ifaddr *ifa;                                             \
 468         for (ifa = (ifp)->if_addrlist; ifa; ifa = ifa->ifa_next) {      \
 469                 if (!ifa->ifa_addr)                                     \
 470                         continue;                                       \
 471                 if (ifa->ifa_addr->sa_family == AF_INET6)               \
 472                         break;                                          \
 473         }                                                               \
 474         (ia) = (struct in6_ifaddr *)ifa;                                \
 475 } while (0)
 476
 477 #else
 478
 479 #define IFP_TO_IA6(ifp, ia)                             \
 480 /* struct ifnet *ifp; */                                \
 481 /* struct in6_ifaddr *ia; */                            \
 482 do {                                                                    \
 483         struct ifaddr *ifa;                                             \
 484         for (ifa = (ifp)->if_addrlist.tqh_first; ifa; ifa = ifa->ifa_list.tqe_next) {   \
 485                 if (!ifa->ifa_addr)                                     \
 486                         continue;                                       \
 487                 if (ifa->ifa_addr->sa_family == AF_INET6)               \
 488                         break;                                          \
 489         }                                                               \
 490         (ia) = (struct in6_ifaddr *)ifa;                                \
 491 } while (0)
 492 #endif
 493
 494 #endif /* _KERNEL */
 495
 496 /*
 497  * Multi-cast membership entry.  One for each group/ifp that a PCB
 498  * belongs to.
 499  */
 500 struct in6_multi_mship {
 501         struct  in6_multi *i6mm_maddr;  /* Multicast address pointer */
 502         LIST_ENTRY(in6_multi_mship) i6mm_chain;  /* multicast options chain */
 503 };
 504
 505 struct  in6_multi {
 506         LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
 507         struct  in6_addr in6m_addr;     /* IP6 multicast address */
 508         struct  ifnet *in6m_ifp;        /* back pointer to ifnet */
 509 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined (__APPLE__)
 510         struct  in6_ifaddr *in6m_ia;    /* back pointer to in6_ifaddr */
 511 #else
 512         struct  ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */
 513 #endif
 514         u_int   in6m_refcount;          /* # membership claims by sockets */
 515         u_int   in6m_state;             /* state of the membership */
 516         u_int   in6m_timer;             /* MLD6 listener report timer */
 517 };
 518
 519 #ifdef KERNEL
 520 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
 521 extern LIST_HEAD(in6_multihead, in6_multi) in6_multihead;
 522 #endif
 523
 524 /*
 525  * Structure used by macros below to remember position when stepping through
 526  * all of eht in6_multi records.
 527  */
 528 struct  in6_multistep {
 529         struct  in6_ifaddr *i_ia;
 530         struct  in6_multi *i_in6m;
 531 };
 532
 533 /*
 534  * Macros for looking up the in6_multi record for a given IP6 multicast
 535  * address on a given interface. If no matching record is found, "in6m"
 536  * returns NLL.
 537  */
 538
 539 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
 540
 541 #define IN6_LOOKUP_MULTI(addr, ifp, in6m)                       \
 542 /* struct in6_addr addr; */                                     \
 543 /* struct ifnet *ifp; */                                        \
 544 /* struct in6_multi *in6m; */                                   \
 545 do { \
 546         register struct ifmultiaddr *ifma; \
 547         for (ifma = (ifp)->if_multiaddrs.lh_first; ifma; \
 548              ifma = ifma->ifma_link.le_next) { \
 549                 if (ifma->ifma_addr->sa_family == AF_INET6 \
 550                     && IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)ifma->ifma_addr)->sin6_addr, \
 551                                           &(addr))) \
 552                         break; \
 553         } \
 554         (in6m) = (struct in6_multi *)(ifma ? ifma->ifma_protospec : 0); \
 555 } while(0)
 556
 557 /*
 558  * Macro to step through all of the in6_multi records, one at a time.
 559  * The current position is remembered in "step", which the caller must
 560  * provide.  IN6_FIRST_MULTI(), below, must be called to initialize "step"
 561  * and get the first record.  Both macros return a NULL "in6m" when there
 562  * are no remaining records.
 563  */
 564 #define IN6_NEXT_MULTI(step, in6m)                                      \
 565 /* struct in6_multistep step; */                                        \
 566 /* struct in6_multi *in6m; */                                           \
 567 do { \
 568         if (((in6m) = (step).i_in6m) != NULL) \
 569                 (step).i_in6m = (step).i_in6m->in6m_entry.le_next; \
 570 } while(0)
 571
 572 #define IN6_FIRST_MULTI(step, in6m)             \
 573 /* struct in6_multistep step; */                \
 574 /* struct in6_multi *in6m */                    \
 575 do { \
 576         (step).i_in6m = in6_multihead.lh_first; \
 577                 IN6_NEXT_MULTI((step), (in6m)); \
 578 } while(0)
 579
 580 #else /* not FreeBSD3 */
 581
 582 #define IN6_LOOKUP_MULTI(addr, ifp, in6m)                       \
 583 /* struct in6_addr addr; */                                     \
 584 /* struct ifnet *ifp; */                                        \
 585 /* struct in6_multi *in6m; */                                   \
 586 do {                                                            \
 587         register struct in6_ifaddr *ia;                         \
 588                                                                 \
 589         IFP_TO_IA6((ifp), ia);                                  \
 590         if (ia == NULL)                                         \
 591                 (in6m) = NULL;                                  \
 592         else                                                    \
 593                 for ((in6m) = ia->ia6_multiaddrs.lh_first;      \
 594                      (in6m) != NULL &&                          \
 595                      !IN6_ARE_ADDR_EQUAL(&(in6m)->in6m_addr, &(addr));  \
 596                      (in6m) = in6m->in6m_entry.le_next)         \
 597                         continue;                               \
 598 } while (0)
 599
 600 /*
 601  * Macro to step through all of the in6_multi records, one at a time.
 602  * The current position is remembered in "step", which the caller must
 603  * provide.  IN6_FIRST_MULTI(), below, must be called to initialize "step"
 604  * and get the first record.  Both macros return a NULL "in6m" when there
 605  * are no remaining records.
 606  */
 607 #define IN6_NEXT_MULTI(step, in6m)                                      \
 608 /* struct in6_multistep step; */                                        \
 609 /* struct in6_multi *in6m; */                                           \
 610 do {                                                                    \
 611         if (((in6m) = (step).i_in6m) != NULL)                           \
 612                 (step).i_in6m = (in6m)->in6m_entry.le_next;             \
 613         else                                                            \
 614                 while ((step).i_ia != NULL) {                           \
 615                         (in6m) = (step).i_ia->ia6_multiaddrs.lh_first;  \
 616                         (step).i_ia = (step).i_ia->ia_next;             \
 617                         if ((in6m) != NULL) {                           \
 618                                 (step).i_in6m = (in6m)->in6m_entry.le_next; \
 619                                 break;                                  \
 620                         }                                               \
 621                 }                                                       \
 622 } while (0)
 623
 624 #define IN6_FIRST_MULTI(step, in6m)             \
 625 /* struct in6_multistep step; */                \
 626 /* struct in6_multi *in6m */                    \
 627 do {                                            \
 628         (step).i_ia = in6_ifaddr;               \
 629         (step).i_in6m = NULL;                   \
 630         IN6_NEXT_MULTI((step), (in6m));         \
 631 } while (0)
 632
 633 #endif /* not FreeBSD3 */
 634
 635 int     in6_ifinit __P((struct ifnet *,
 636                         struct in6_ifaddr *, struct sockaddr_in6 *, int));
 637 struct  in6_multi *in6_addmulti __P((struct in6_addr *, struct ifnet *,
 638                                      int *));
 639 void    in6_delmulti __P((struct in6_multi *));
 640 void    in6_ifscrub __P((struct ifnet *, struct in6_ifaddr *));
 641 extern int in6_ifindex2scopeid __P((int));
 642 extern int in6_mask2len __P((struct in6_addr *));
 643 extern void in6_len2mask __P((struct in6_addr *, int));
 644 #if !defined(__bsdi__) && !(defined(__FreeBSD__) && __FreeBSD__ < 3) && !defined (__APPLE__)
 645 int     in6_control __P((struct socket *,
 646                          u_long, caddr_t, struct ifnet *, struct proc *));
 647 #else
 648 int     in6_control __P((struct socket *, u_long, caddr_t, struct ifnet *));
 649 #endif
 650 void    in6_purgeaddr __P((struct ifaddr *, struct ifnet *));
 651 void    in6_savemkludge __P((struct in6_ifaddr *));
 652 void    in6_setmaxmtu   __P((void));
 653 void    in6_restoremkludge __P((struct in6_ifaddr *, struct ifnet *));
 654 void    in6_purgemkludge __P((struct ifnet *));
 655 struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *, int));
 656 struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *,
 657                                              struct in6_addr *));
 658 char    *ip6_sprintf __P((struct in6_addr *));
 659 int     in6_addr2scopeid __P((struct ifnet *, struct in6_addr *));
 660 int     in6_matchlen __P((struct in6_addr *, struct in6_addr *));
 661 int     in6_are_prefix_equal __P((struct in6_addr *p1, struct in6_addr *p2,
 662                                   int len));
 663 void    in6_prefixlen2mask __P((struct in6_addr *maskp, int len));
 664 int     in6_prefix_ioctl __P((struct socket *so, u_long cmd, caddr_t data,
 665                               struct ifnet *ifp));
 666 int     in6_prefix_add_ifid __P((int iilen, struct in6_ifaddr *ia));
 667 void    in6_prefix_remove_ifid __P((int iilen, struct in6_ifaddr *ia));
 668 void    in6_purgeprefix __P((struct ifnet *));
 669 #endif /* _KERNEL */
 670
 671 #endif /* _NETINET6_IN6_VAR_H_ */