sys/netinet6/in6_var.h

   1 /*      $NetBSD: in6_var.h,v 1.63 2009/01/15 20:32:59 christos Exp $    */
   2 /*      $KAME: in6_var.h,v 1.81 2002/06/08 11:16:51 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) 1985, 1986, 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_var.h    8.1 (Berkeley) 6/10/93
  62  */
  63
  64 #ifndef _NETINET6_IN6_VAR_H_
  65 #define _NETINET6_IN6_VAR_H_
  66
  67 #include <sys/callout.h>
  68
  69 /*
  70  * Interface address, Internet version.  One of these structures
  71  * is allocated for each interface with an Internet address.
  72  * The ifaddr structure contains the protocol-independent part
  73  * of the structure and is assumed to be first.
  74  */
  75
  76 /*
  77  * pltime/vltime are just for future reference (required to implements 2
  78  * hour rule for hosts).  they should never be modified by nd6_timeout or
  79  * anywhere else.
  80  *      userland -> kernel: accept pltime/vltime
  81  *      kernel -> userland: throw up everything
  82  *      in kernel: modify preferred/expire only
  83  */
  84 struct in6_addrlifetime {
  85         time_t ia6t_expire;     /* valid lifetime expiration time */
  86         time_t ia6t_preferred;  /* preferred lifetime expiration time */
  87         u_int32_t ia6t_vltime;  /* valid lifetime */
  88         u_int32_t ia6t_pltime;  /* prefix lifetime */
  89 };
  90
  91 struct nd_ifinfo;
  92 struct in6_ifextra {
  93         struct in6_ifstat *in6_ifstat;
  94         struct icmp6_ifstat *icmp6_ifstat;
  95         struct nd_ifinfo *nd_ifinfo;
  96         struct scope6_id *scope6_id;
  97 };
  98
  99 struct  in6_ifaddr {
 100         struct  ifaddr ia_ifa;          /* protocol-independent info */
 101 #define ia_ifp          ia_ifa.ifa_ifp
 102 #define ia_flags        ia_ifa.ifa_flags
 103         struct  sockaddr_in6 ia_addr;   /* interface address */
 104         struct  sockaddr_in6 ia_net;    /* network number of interface */
 105         struct  sockaddr_in6 ia_dstaddr; /* space for destination addr */
 106         struct  sockaddr_in6 ia_prefixmask; /* prefix mask */
 107         u_int32_t ia_plen;              /* prefix length */
 108         struct  in6_ifaddr *ia_next;    /* next in6 list of IP6 addresses */
 109         LIST_HEAD(in6_multihead, in6_multi) ia6_multiaddrs;
 110                                         /* list of multicast addresses */
 111         int     ia6_flags;
 112
 113         struct in6_addrlifetime ia6_lifetime;
 114         time_t  ia6_createtime; /* the creation time of this address, which is
 115                                  * currently used for temporary addresses only.
 116                                  */
 117         time_t  ia6_updatetime;
 118
 119         /* back pointer to the ND prefix (for autoconfigured addresses only) */
 120         struct nd_prefix *ia6_ndpr;
 121
 122         /* multicast addresses joined from the kernel */
 123         LIST_HEAD(, in6_multi_mship) ia6_memberships;
 124 };
 125
 126 /* control structure to manage address selection policy */
 127 struct in6_addrpolicy {
 128         struct sockaddr_in6 addr; /* prefix address */
 129         struct sockaddr_in6 addrmask; /* prefix mask */
 130         int preced;             /* precedence */
 131         int label;              /* matching label */
 132         u_quad_t use;           /* statistics */
 133 };
 134
 135 /*
 136  * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
 137  */
 138 struct in6_ifstat {
 139         u_quad_t ifs6_in_receive;       /* # of total input datagram */
 140         u_quad_t ifs6_in_hdrerr;        /* # of datagrams with invalid hdr */
 141         u_quad_t ifs6_in_toobig;        /* # of datagrams exceeded MTU */
 142         u_quad_t ifs6_in_noroute;       /* # of datagrams with no route */
 143         u_quad_t ifs6_in_addrerr;       /* # of datagrams with invalid dst */
 144         u_quad_t ifs6_in_protounknown;  /* # of datagrams with unknown proto */
 145                                         /* NOTE: increment on final dst if */
 146         u_quad_t ifs6_in_truncated;     /* # of truncated datagrams */
 147         u_quad_t ifs6_in_discard;       /* # of discarded datagrams */
 148                                         /* NOTE: fragment timeout is not here */
 149         u_quad_t ifs6_in_deliver;       /* # of datagrams delivered to ULP */
 150                                         /* NOTE: increment on final dst if */
 151         u_quad_t ifs6_out_forward;      /* # of datagrams forwarded */
 152                                         /* NOTE: increment on outgoing if */
 153         u_quad_t ifs6_out_request;      /* # of outgoing datagrams from ULP */
 154                                         /* NOTE: does not include forwrads */
 155         u_quad_t ifs6_out_discard;      /* # of discarded datagrams */
 156         u_quad_t ifs6_out_fragok;       /* # of datagrams fragmented */
 157         u_quad_t ifs6_out_fragfail;     /* # of datagrams failed on fragment */
 158         u_quad_t ifs6_out_fragcreat;    /* # of fragment datagrams */
 159                                         /* NOTE: this is # after fragment */
 160         u_quad_t ifs6_reass_reqd;       /* # of incoming fragmented packets */
 161                                         /* NOTE: increment on final dst if */
 162         u_quad_t ifs6_reass_ok;         /* # of reassembled packets */
 163                                         /* NOTE: this is # after reass */
 164                                         /* NOTE: increment on final dst if */
 165         u_quad_t ifs6_reass_fail;       /* # of reass failures */
 166                                         /* NOTE: may not be packet count */
 167                                         /* NOTE: increment on final dst if */
 168         u_quad_t ifs6_in_mcast;         /* # of inbound multicast datagrams */
 169         u_quad_t ifs6_out_mcast;        /* # of outbound multicast datagrams */
 170 };
 171
 172 /*
 173  * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
 174  * XXX: I'm not sure if this file is the right place for this structure...
 175  */
 176 struct icmp6_ifstat {
 177         /*
 178          * Input statistics
 179          */
 180         /* ipv6IfIcmpInMsgs, total # of input messages */
 181         u_quad_t ifs6_in_msg;
 182         /* ipv6IfIcmpInErrors, # of input error messages */
 183         u_quad_t ifs6_in_error;
 184         /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
 185         u_quad_t ifs6_in_dstunreach;
 186         /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
 187         u_quad_t ifs6_in_adminprohib;
 188         /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
 189         u_quad_t ifs6_in_timeexceed;
 190         /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
 191         u_quad_t ifs6_in_paramprob;
 192         /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
 193         u_quad_t ifs6_in_pkttoobig;
 194         /* ipv6IfIcmpInEchos, # of input echo requests */
 195         u_quad_t ifs6_in_echo;
 196         /* ipv6IfIcmpInEchoReplies, # of input echo replies */
 197         u_quad_t ifs6_in_echoreply;
 198         /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
 199         u_quad_t ifs6_in_routersolicit;
 200         /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
 201         u_quad_t ifs6_in_routeradvert;
 202         /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
 203         u_quad_t ifs6_in_neighborsolicit;
 204         /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
 205         u_quad_t ifs6_in_neighboradvert;
 206         /* ipv6IfIcmpInRedirects, # of input redirects */
 207         u_quad_t ifs6_in_redirect;
 208         /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
 209         u_quad_t ifs6_in_mldquery;
 210         /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
 211         u_quad_t ifs6_in_mldreport;
 212         /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
 213         u_quad_t ifs6_in_mlddone;
 214
 215         /*
 216          * Output statistics. We should solve unresolved routing problem...
 217          */
 218         /* ipv6IfIcmpOutMsgs, total # of output messages */
 219         u_quad_t ifs6_out_msg;
 220         /* ipv6IfIcmpOutErrors, # of output error messages */
 221         u_quad_t ifs6_out_error;
 222         /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
 223         u_quad_t ifs6_out_dstunreach;
 224         /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
 225         u_quad_t ifs6_out_adminprohib;
 226         /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
 227         u_quad_t ifs6_out_timeexceed;
 228         /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
 229         u_quad_t ifs6_out_paramprob;
 230         /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
 231         u_quad_t ifs6_out_pkttoobig;
 232         /* ipv6IfIcmpOutEchos, # of output echo requests */
 233         u_quad_t ifs6_out_echo;
 234         /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
 235         u_quad_t ifs6_out_echoreply;
 236         /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
 237         u_quad_t ifs6_out_routersolicit;
 238         /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
 239         u_quad_t ifs6_out_routeradvert;
 240         /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
 241         u_quad_t ifs6_out_neighborsolicit;
 242         /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
 243         u_quad_t ifs6_out_neighboradvert;
 244         /* ipv6IfIcmpOutRedirects, # of output redirects */
 245         u_quad_t ifs6_out_redirect;
 246         /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
 247         u_quad_t ifs6_out_mldquery;
 248         /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
 249         u_quad_t ifs6_out_mldreport;
 250         /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
 251         u_quad_t ifs6_out_mlddone;
 252 };
 253
 254 /*
 255  * If you make changes that change the size of in6_ifreq,
 256  * make sure you fix compat/netinet6/in6_var.h
 257  */
 258 struct  in6_ifreq {
 259         char    ifr_name[IFNAMSIZ];
 260         union {
 261                 struct  sockaddr_in6 ifru_addr;
 262                 struct  sockaddr_in6 ifru_dstaddr;
 263                 short   ifru_flags;
 264                 int     ifru_flags6;
 265                 int     ifru_metric;
 266                 void *  ifru_data;
 267                 struct in6_addrlifetime ifru_lifetime;
 268                 struct in6_ifstat ifru_stat;
 269                 struct icmp6_ifstat ifru_icmp6stat;
 270         } ifr_ifru;
 271 };
 272
 273 struct  in6_aliasreq {
 274         char    ifra_name[IFNAMSIZ];
 275         struct  sockaddr_in6 ifra_addr;
 276         struct  sockaddr_in6 ifra_dstaddr;
 277         struct  sockaddr_in6 ifra_prefixmask;
 278         int     ifra_flags;
 279         struct in6_addrlifetime ifra_lifetime;
 280 };
 281
 282 /* prefix type macro */
 283 #define IN6_PREFIX_ND   1
 284 #define IN6_PREFIX_RR   2
 285
 286 /*
 287  * prefix related flags passed between kernel(NDP related part) and
 288  * user land command(ifconfig) and daemon(rtadvd).
 289  * Note: We originally intended to use prf_ra{} only within in6_prflags{}, but
 290  * it was (probably unintentionally) used in nd6.h as well.  Since C++ does
 291  * not allow such a reference, prf_ra{} was then moved outside.  In general,
 292  * however, this structure should not be used directly.
 293  */
 294 struct prf_ra {
 295         u_int32_t onlink : 1;
 296         u_int32_t autonomous : 1;
 297         u_int32_t router : 1;
 298         u_int32_t reserved : 5;
 299 };
 300
 301 struct in6_prflags {
 302         struct prf_ra prf_ra;
 303         u_char prf_reserved1;
 304         u_short prf_reserved2;
 305         /* want to put this on 4byte offset */
 306         struct prf_rr {
 307                 u_int32_t decrvalid : 1;
 308                 u_int32_t decrprefd : 1;
 309                 u_int32_t reserved : 6;
 310         } prf_rr;
 311         u_char prf_reserved3;
 312         u_short prf_reserved4;
 313 };
 314
 315 struct  in6_prefixreq {
 316         char    ipr_name[IFNAMSIZ];
 317         u_char  ipr_origin;
 318         u_char  ipr_plen;
 319         u_int32_t ipr_vltime;
 320         u_int32_t ipr_pltime;
 321         struct in6_prflags ipr_flags;
 322         struct  sockaddr_in6 ipr_prefix;
 323 };
 324
 325 #define PR_ORIG_RA      0
 326 #define PR_ORIG_RR      1
 327 #define PR_ORIG_STATIC  2
 328 #define PR_ORIG_KERNEL  3
 329
 330 #define ipr_raf_onlink          ipr_flags.prf_ra.onlink
 331 #define ipr_raf_auto            ipr_flags.prf_ra.autonomous
 332
 333 #define ipr_statef_onlink       ipr_flags.prf_state.onlink
 334
 335 #define ipr_rrf_decrvalid       ipr_flags.prf_rr.decrvalid
 336 #define ipr_rrf_decrprefd       ipr_flags.prf_rr.decrprefd
 337
 338 struct  in6_rrenumreq {
 339         char    irr_name[IFNAMSIZ];
 340         u_char  irr_origin;
 341         u_char  irr_m_len;      /* match len for matchprefix */
 342         u_char  irr_m_minlen;   /* minlen for matching prefix */
 343         u_char  irr_m_maxlen;   /* maxlen for matching prefix */
 344         u_char  irr_u_uselen;   /* uselen for adding prefix */
 345         u_char  irr_u_keeplen;  /* keeplen from matching prefix */
 346         struct irr_raflagmask {
 347                 u_int32_t onlink : 1;
 348                 u_int32_t autonomous : 1;
 349                 u_int32_t reserved : 6;
 350         } irr_raflagmask;
 351         u_int32_t irr_vltime;
 352         u_int32_t irr_pltime;
 353         struct in6_prflags irr_flags;
 354         struct  sockaddr_in6 irr_matchprefix;
 355         struct  sockaddr_in6 irr_useprefix;
 356 };
 357
 358 #define irr_raf_mask_onlink     irr_raflagmask.onlink
 359 #define irr_raf_mask_auto       irr_raflagmask.autonomous
 360 #define irr_raf_mask_reserved   irr_raflagmask.reserved
 361
 362 #define irr_raf_onlink          irr_flags.prf_ra.onlink
 363 #define irr_raf_auto            irr_flags.prf_ra.autonomous
 364
 365 #define irr_statef_onlink       irr_flags.prf_state.onlink
 366
 367 #define irr_rrf                 irr_flags.prf_rr
 368 #define irr_rrf_decrvalid       irr_flags.prf_rr.decrvalid
 369 #define irr_rrf_decrprefd       irr_flags.prf_rr.decrprefd
 370
 371 /*
 372  * Given a pointer to an in6_ifaddr (ifaddr),
 373  * return a pointer to the addr as a sockaddr_in6
 374  */
 375 #define IA6_IN6(ia)     (&((ia)->ia_addr.sin6_addr))
 376 #define IA6_DSTIN6(ia)  (&((ia)->ia_dstaddr.sin6_addr))
 377 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
 378 #define IA6_SIN6(ia)    (&((ia)->ia_addr))
 379 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
 380 #define IFA_IN6(x)      (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
 381 #define IFA_DSTIN6(x)   (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
 382
 383 #ifdef _KERNEL
 384 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m)      (       \
 385         (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
 386         (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
 387         (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
 388         (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
 389 #endif
 390
 391 #define SIOCSIFADDR_IN6          _IOW('i', 12, struct in6_ifreq)
 392 #define SIOCGIFADDR_IN6         _IOWR('i', 33, struct in6_ifreq)
 393
 394 #ifdef _KERNEL
 395 /*
 396  * SIOCSxxx ioctls should be unused (see comments in in6.c), but
 397  * we do not shift numbers for binary compatibility.
 398  */
 399 #define SIOCSIFDSTADDR_IN6       _IOW('i', 14, struct in6_ifreq)
 400 #define SIOCSIFNETMASK_IN6       _IOW('i', 22, struct in6_ifreq)
 401 #endif
 402
 403 #define SIOCGIFDSTADDR_IN6      _IOWR('i', 34, struct in6_ifreq)
 404 #define SIOCGIFNETMASK_IN6      _IOWR('i', 37, struct in6_ifreq)
 405
 406 #define SIOCDIFADDR_IN6          _IOW('i', 25, struct in6_ifreq)
 407 /* 26 was OSIOCAIFADDR_IN6 */
 408
 409 /* 70 was OSIOCSIFPHYADDR_IN6 */
 410 #define SIOCGIFPSRCADDR_IN6     _IOWR('i', 71, struct in6_ifreq)
 411 #define SIOCGIFPDSTADDR_IN6     _IOWR('i', 72, struct in6_ifreq)
 412
 413 #define SIOCGIFAFLAG_IN6        _IOWR('i', 73, struct in6_ifreq)
 414
 415 #define SIOCGDRLST_IN6          _IOWR('i', 74, struct in6_drlist)
 416 #define SIOCGPRLST_IN6          _IOWR('i', 75, struct in6_oprlist)
 417 #ifdef _KERNEL
 418 #define OSIOCGIFINFO_IN6        _IOWR('i', 76, struct in6_ondireq)
 419 #endif
 420 #define SIOCSNDFLUSH_IN6        _IOWR('i', 77, struct in6_ifreq)
 421 #define SIOCGNBRINFO_IN6        _IOWR('i', 78, struct in6_nbrinfo)
 422 #define SIOCSPFXFLUSH_IN6       _IOWR('i', 79, struct in6_ifreq)
 423 #define SIOCSRTRFLUSH_IN6       _IOWR('i', 80, struct in6_ifreq)
 424 /* 81 was old SIOCGIFALIFETIME_IN6 */
 425 #if 0
 426 /* withdrawn - do not reuse number 82 */
 427 #define SIOCSIFALIFETIME_IN6    _IOWR('i', 82, struct in6_ifreq)
 428 #endif
 429 #define SIOCGIFSTAT_IN6         _IOWR('i', 83, struct in6_ifreq)
 430 #define SIOCGIFSTAT_ICMP6       _IOWR('i', 84, struct in6_ifreq)
 431
 432 #define SIOCSDEFIFACE_IN6       _IOWR('i', 85, struct in6_ndifreq)
 433 #define SIOCGDEFIFACE_IN6       _IOWR('i', 86, struct in6_ndifreq)
 434
 435 #define SIOCSIFINFO_FLAGS       _IOWR('i', 87, struct in6_ndireq) /* XXX */
 436
 437 #define SIOCSIFPREFIX_IN6       _IOW('i', 100, struct in6_prefixreq) /* set */
 438 #define SIOCGIFPREFIX_IN6       _IOWR('i', 101, struct in6_prefixreq) /* get */
 439 #define SIOCDIFPREFIX_IN6       _IOW('i', 102, struct in6_prefixreq) /* del */
 440 #define SIOCAIFPREFIX_IN6       _IOW('i', 103, struct in6_rrenumreq) /* add */
 441 #define SIOCCIFPREFIX_IN6       _IOW('i', 104, \
 442                                      struct in6_rrenumreq) /* change */
 443 #define SIOCSGIFPREFIX_IN6      _IOW('i', 105, \
 444                                      struct in6_rrenumreq) /* set global */
 445 #define SIOCGIFALIFETIME_IN6    _IOWR('i', 106, struct in6_ifreq)
 446 #define SIOCAIFADDR_IN6         _IOW('i', 107, struct in6_aliasreq)
 447 #define SIOCGIFINFO_IN6         _IOWR('i', 108, struct in6_ndireq)
 448 #define SIOCSIFINFO_IN6         _IOWR('i', 109, struct in6_ndireq)
 449 #define SIOCSIFPHYADDR_IN6      _IOW('i', 110, struct in6_aliasreq)
 450
 451
 452 /* XXX: Someone decided to switch to 'u' here for unknown reasons! */
 453 #define SIOCGETSGCNT_IN6        _IOWR('u', 106, \
 454                                       struct sioc_sg_req6) /* get s,g pkt cnt */
 455 #define SIOCGETMIFCNT_IN6       _IOWR('u', 107, \
 456                                       struct sioc_mif_req6) /* get pkt cnt per if */
 457 #define SIOCAADDRCTL_POLICY     _IOW('u', 108, struct in6_addrpolicy)
 458 #define SIOCDADDRCTL_POLICY     _IOW('u', 109, struct in6_addrpolicy)
 459
 460 #define IN6_IFF_ANYCAST         0x01    /* anycast address */
 461 #define IN6_IFF_TENTATIVE       0x02    /* tentative address */
 462 #define IN6_IFF_DUPLICATED      0x04    /* DAD detected duplicate */
 463 #define IN6_IFF_DETACHED        0x08    /* may be detached from the link */
 464 #define IN6_IFF_DEPRECATED      0x10    /* deprecated address */
 465 #define IN6_IFF_NODAD           0x20    /* don't perform DAD on this address
 466                                          * (used only at first SIOC* call)
 467                                          */
 468 #define IN6_IFF_AUTOCONF        0x40    /* autoconfigurable address. */
 469 #define IN6_IFF_TEMPORARY       0x80    /* temporary (anonymous) address. */
 470
 471 /* do not input/output */
 472 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
 473
 474 #ifdef _KERNEL
 475 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
 476 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
 477 #endif
 478
 479 #ifdef _KERNEL
 480 MALLOC_DECLARE(M_IP6OPT);
 481
 482 extern struct in6_ifaddr *in6_ifaddr;
 483
 484 #define in6_ifstat_inc(ifp, tag) \
 485 do {                                                            \
 486         if (ifp)                                                \
 487                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \
 488 } while (/*CONSTCOND*/ 0)
 489
 490 extern struct ifqueue ip6intrq;         /* IP6 packet input queue */
 491 extern const struct in6_addr zeroin6_addr;
 492 extern const u_char inet6ctlerrmap[];
 493 extern unsigned long in6_maxmtu;
 494
 495 /*
 496  * Macro for finding the internet address structure (in6_ifaddr) corresponding
 497  * to a given interface (ifnet structure).
 498  */
 499 static inline struct in6_ifaddr *
 500 ifp_to_ia6(struct ifnet *ifp)
 501 {
 502         struct ifaddr *ifa;
 503
 504         IFADDR_FOREACH(ifa, ifp) {
 505                 if (ifa->ifa_addr == NULL)
 506                         continue;
 507                 if (ifa->ifa_addr->sa_family == AF_INET6)
 508                         break;
 509         }
 510         return (struct in6_ifaddr *)ifa;
 511 }
 512
 513 #define IFP_TO_IA6(__ifp, __ia)                         \
 514 do {                                                    \
 515         (__ia) = ifp_to_ia6((__ifp));                           \
 516 } while (/*CONSTCOND*/0)
 517
 518
 519 #endif /* _KERNEL */
 520
 521 /*
 522  * Multi-cast membership entry.  One for each group/ifp that a PCB
 523  * belongs to.
 524  */
 525 struct in6_multi_mship {
 526         struct  in6_multi *i6mm_maddr;  /* Multicast address pointer */
 527         LIST_ENTRY(in6_multi_mship) i6mm_chain;  /* multicast options chain */
 528 };
 529
 530 struct  in6_multi {
 531         LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
 532         struct  in6_addr in6m_addr;     /* IP6 multicast address */
 533         struct  ifnet *in6m_ifp;        /* back pointer to ifnet */
 534         struct  in6_ifaddr *in6m_ia;    /* back pointer to in6_ifaddr */
 535         u_int   in6m_refcount;          /* # membership claims by sockets */
 536         u_int   in6m_state;             /* state of the membership */
 537         int     in6m_timer;             /* delay to send the 1st report */
 538         struct timeval in6m_timer_expire; /* when the timer expires */
 539         callout_t in6m_timer_ch;
 540 };
 541
 542 #define IN6M_TIMER_UNDEF -1
 543
 544
 545 #ifdef _KERNEL
 546 /* flags to in6_update_ifa */
 547 #define IN6_IFAUPDATE_DADDELAY  0x1 /* first time to configure an address */
 548
 549 /*
 550  * Structure used by macros below to remember position when stepping through
 551  * all of the in6_multi records.
 552  */
 553 struct  in6_multistep {
 554         struct  in6_ifaddr *i_ia;
 555         struct  in6_multi *i_in6m;
 556 };
 557
 558 /*
 559  * Macros for looking up the in6_multi record for a given IP6 multicast
 560  * address on a given interface. If no matching record is found, "in6m"
 561  * returns NULL.
 562  */
 563
 564 static inline struct in6_multi *
 565 in6_lookup_multi(struct in6_addr *addr, struct ifnet *ifp)
 566 {
 567         struct in6_multi *in6m;
 568         struct in6_ifaddr *ia;
 569
 570         if ((ia = ifp_to_ia6(ifp)) == NULL)
 571                 return NULL;
 572         LIST_FOREACH(in6m, &ia->ia6_multiaddrs, in6m_entry) {
 573                 if (IN6_ARE_ADDR_EQUAL(&in6m->in6m_addr, addr))
 574                         break;
 575         }
 576         return in6m;
 577 }
 578
 579 #define IN6_LOOKUP_MULTI(__addr, __ifp, __in6m)                 \
 580 /* struct in6_addr __addr; */                                   \
 581 /* struct ifnet *__ifp; */                                      \
 582 /* struct in6_multi *__in6m; */                                 \
 583 do {                                                            \
 584         (__in6m) = in6_lookup_multi(&(__addr), (__ifp));        \
 585 } while (/*CONSTCOND*/ 0)
 586
 587 /*
 588  * Macro to step through all of the in6_multi records, one at a time.
 589  * The current position is remembered in "step", which the caller must
 590  * provide.  IN6_FIRST_MULTI(), below, must be called to initialize "step"
 591  * and get the first record.  Both macros return a NULL "in6m" when there
 592  * are no remaining records.
 593  */
 594 static inline struct in6_multi *
 595 in6_next_multi(struct in6_multistep *step)
 596 {
 597         struct in6_multi *in6m;
 598
 599         if ((in6m = step->i_in6m) != NULL) {
 600                 step->i_in6m = LIST_NEXT(in6m, in6m_entry);
 601                 return in6m;
 602         }
 603         while (step->i_ia != NULL) {
 604                 in6m = LIST_FIRST(&step->i_ia->ia6_multiaddrs);
 605                 step->i_ia = step->i_ia->ia_next;
 606                 if (in6m != NULL) {
 607                         step->i_in6m = LIST_NEXT(in6m, in6m_entry);
 608                         break;
 609                 }
 610         }
 611         return in6m;
 612 }
 613
 614 static inline struct in6_multi *
 615 in6_first_multi(struct in6_multistep *step)
 616 {
 617         step->i_ia = in6_ifaddr;
 618         step->i_in6m = NULL;
 619         return in6_next_multi(step);
 620 }
 621
 622 #define IN6_NEXT_MULTI(__step, __in6m)          \
 623 /* struct in6_multistep __step; */              \
 624 /* struct in6_multi *__in6m; */                 \
 625 do {                                            \
 626         (__in6m) = in6_next_multi(&(__step));   \
 627 } while (/*CONSTCOND*/ 0)
 628
 629 #define IN6_FIRST_MULTI(__step, __in6m)         \
 630 /* struct in6_multistep __step; */              \
 631 /* struct in6_multi *__in6m */                  \
 632 do {                                            \
 633         (__in6m) = in6_first_multi(&(__step));  \
 634 } while (/*CONSTCOND*/ 0)
 635
 636
 637 #if 0
 638 /*
 639  * Macros for looking up the in6_multi_mship record for a given IP6 multicast
 640  * address on a given interface. If no matching record is found, "imm"
 641  * returns NULL.
 642  */
 643 static inline struct in6_multi_mship *
 644 in6_lookup_mship(struct in6_addr *addr, struct ifnet *ifp,
 645     struct ip6_moptions *imop)
 646 {
 647         struct in6_multi_mship *imm;
 648
 649         LIST_FOREACH(imm, &imop->im6o_memberships, i6mm_chain) {
 650                 if (imm->i6mm_maddr->in6m_ifp != ifp)
 651                         continue;
 652                 if (IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr,
 653                     addr))
 654                         break;
 655         }
 656         return imm;
 657 }
 658
 659 #define IN6_LOOKUP_MSHIP(__addr, __ifp, __imop, __imm)                  \
 660 /* struct in6_addr __addr; */                                           \
 661 /* struct ifnet *__ifp; */                                              \
 662 /* struct ip6_moptions *__imop */                                       \
 663 /* struct in6_multi_mship *__imm; */                                    \
 664 do {                                                                    \
 665         (__imm) = in6_lookup_mship(&(__addr), (__ifp), (__imop));       \
 666 } while (/*CONSTCOND*/ 0)
 667 #endif
 668
 669 struct  in6_multi *in6_addmulti(struct in6_addr *, struct ifnet *,
 670         int *, int);
 671 void    in6_delmulti(struct in6_multi *);
 672 struct in6_multi_mship *in6_joingroup(struct ifnet *, struct in6_addr *,
 673         int *, int);
 674 int     in6_leavegroup(struct in6_multi_mship *);
 675 int     in6_mask2len(struct in6_addr *, u_char *);
 676 int     in6_control(struct socket *, u_long, void *, struct ifnet *,
 677         struct lwp *);
 678 int     in6_update_ifa(struct ifnet *, struct in6_aliasreq *,
 679         struct in6_ifaddr *, int);
 680 void    in6_purgeaddr(struct ifaddr *);
 681 int     in6if_do_dad(struct ifnet *);
 682 void    in6_purgeif(struct ifnet *);
 683 void    in6_savemkludge(struct in6_ifaddr *);
 684 void    in6_setmaxmtu  (void);
 685 int     in6_if2idlen  (struct ifnet *);
 686 void    *in6_domifattach(struct ifnet *);
 687 void    in6_domifdetach(struct ifnet *, void *);
 688 void    in6_restoremkludge(struct in6_ifaddr *, struct ifnet *);
 689 void    in6_ifremloop(struct ifaddr *);
 690 void    in6_ifaddloop(struct ifaddr *);
 691 void    in6_createmkludge(struct ifnet *);
 692 void    in6_purgemkludge(struct ifnet *);
 693 struct in6_ifaddr *in6ifa_ifpforlinklocal(const struct ifnet *, int);
 694 struct in6_ifaddr *in6ifa_ifplocaladdr(const struct ifnet *,
 695     const struct in6_addr *);
 696 struct in6_ifaddr *in6ifa_ifpwithaddr(const struct ifnet *,
 697     const struct in6_addr *);
 698 char    *ip6_sprintf(const struct in6_addr *);
 699 int     in6_matchlen(struct in6_addr *, struct in6_addr *);
 700 int     in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int);
 701 void    in6_prefixlen2mask(struct in6_addr *, int);
 702 void    in6_purgeprefix(struct ifnet *);
 703
 704 int     ip6flow_fastforward(struct mbuf *); /* IPv6 fast forward routine */
 705
 706 int in6_src_ioctl(u_long, void *);
 707 int     in6_is_addr_deprecated(struct sockaddr_in6 *);
 708 struct in6pcb;
 709 #endif /* _KERNEL */
 710
 711 #endif /* !_NETINET6_IN6_VAR_H_ */