sys/netinet6/in6_var.h

   1 /*      $NetBSD: in6_var.h,v 1.74 2015/09/06 06:01:01 dholland 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 #include <sys/ioccom.h>
  69
  70 /*
  71  * Interface address, Internet version.  One of these structures
  72  * is allocated for each interface with an Internet address.
  73  * The ifaddr structure contains the protocol-independent part
  74  * of the structure and is assumed to be first.
  75  */
  76
  77 /*
  78  * pltime/vltime are just for future reference (required to implements 2
  79  * hour rule for hosts).  they should never be modified by nd6_timeout or
  80  * anywhere else.
  81  *      userland -> kernel: accept pltime/vltime
  82  *      kernel -> userland: throw up everything
  83  *      in kernel: modify preferred/expire only
  84  */
  85 struct in6_addrlifetime {
  86         time_t ia6t_expire;     /* valid lifetime expiration time */
  87         time_t ia6t_preferred;  /* preferred lifetime expiration time */
  88         u_int32_t ia6t_vltime;  /* valid lifetime */
  89         u_int32_t ia6t_pltime;  /* prefix lifetime */
  90 };
  91
  92 struct nd_ifinfo;
  93 struct in6_ifextra {
  94         struct in6_ifstat *in6_ifstat;
  95         struct icmp6_ifstat *icmp6_ifstat;
  96         struct nd_ifinfo *nd_ifinfo;
  97         struct scope6_id *scope6_id;
  98         int nprefixes;
  99         int ndefrouters;
 100 };
 101
 102 LIST_HEAD(in6_multihead, in6_multi);
 103 struct  in6_ifaddr {
 104         struct  ifaddr ia_ifa;          /* protocol-independent info */
 105 #define ia_ifp          ia_ifa.ifa_ifp
 106 #define ia_flags        ia_ifa.ifa_flags
 107         struct  sockaddr_in6 ia_addr;   /* interface address */
 108         struct  sockaddr_in6 ia_net;    /* network number of interface */
 109         struct  sockaddr_in6 ia_dstaddr; /* space for destination addr */
 110         struct  sockaddr_in6 ia_prefixmask; /* prefix mask */
 111         u_int32_t ia_plen;              /* prefix length */
 112         struct  in6_ifaddr *ia_next;    /* next in6 list of IP6 addresses */
 113         struct  in6_multihead ia6_multiaddrs;
 114                                         /* list of multicast addresses */
 115         int     ia6_flags;
 116
 117         struct in6_addrlifetime ia6_lifetime;
 118         time_t  ia6_createtime; /* the creation time of this address, which is
 119                                  * currently used for temporary addresses only.
 120                                  */
 121         time_t  ia6_updatetime;
 122
 123         /* back pointer to the ND prefix (for autoconfigured addresses only) */
 124         struct nd_prefix *ia6_ndpr;
 125
 126         /* multicast addresses joined from the kernel */
 127         LIST_HEAD(, in6_multi_mship) ia6_memberships;
 128 };
 129
 130 /* control structure to manage address selection policy */
 131 struct in6_addrpolicy {
 132         struct sockaddr_in6 addr; /* prefix address */
 133         struct sockaddr_in6 addrmask; /* prefix mask */
 134         int preced;             /* precedence */
 135         int label;              /* matching label */
 136         u_quad_t use;           /* statistics */
 137 };
 138
 139 /*
 140  * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
 141  */
 142 struct in6_ifstat {
 143         u_quad_t ifs6_in_receive;       /* # of total input datagram */
 144         u_quad_t ifs6_in_hdrerr;        /* # of datagrams with invalid hdr */
 145         u_quad_t ifs6_in_toobig;        /* # of datagrams exceeded MTU */
 146         u_quad_t ifs6_in_noroute;       /* # of datagrams with no route */
 147         u_quad_t ifs6_in_addrerr;       /* # of datagrams with invalid dst */
 148         u_quad_t ifs6_in_protounknown;  /* # of datagrams with unknown proto */
 149                                         /* NOTE: increment on final dst if */
 150         u_quad_t ifs6_in_truncated;     /* # of truncated datagrams */
 151         u_quad_t ifs6_in_discard;       /* # of discarded datagrams */
 152                                         /* NOTE: fragment timeout is not here */
 153         u_quad_t ifs6_in_deliver;       /* # of datagrams delivered to ULP */
 154                                         /* NOTE: increment on final dst if */
 155         u_quad_t ifs6_out_forward;      /* # of datagrams forwarded */
 156                                         /* NOTE: increment on outgoing if */
 157         u_quad_t ifs6_out_request;      /* # of outgoing datagrams from ULP */
 158                                         /* NOTE: does not include forwrads */
 159         u_quad_t ifs6_out_discard;      /* # of discarded datagrams */
 160         u_quad_t ifs6_out_fragok;       /* # of datagrams fragmented */
 161         u_quad_t ifs6_out_fragfail;     /* # of datagrams failed on fragment */
 162         u_quad_t ifs6_out_fragcreat;    /* # of fragment datagrams */
 163                                         /* NOTE: this is # after fragment */
 164         u_quad_t ifs6_reass_reqd;       /* # of incoming fragmented packets */
 165                                         /* NOTE: increment on final dst if */
 166         u_quad_t ifs6_reass_ok;         /* # of reassembled packets */
 167                                         /* NOTE: this is # after reass */
 168                                         /* NOTE: increment on final dst if */
 169         u_quad_t ifs6_reass_fail;       /* # of reass failures */
 170                                         /* NOTE: may not be packet count */
 171                                         /* NOTE: increment on final dst if */
 172         u_quad_t ifs6_in_mcast;         /* # of inbound multicast datagrams */
 173         u_quad_t ifs6_out_mcast;        /* # of outbound multicast datagrams */
 174 };
 175
 176 /*
 177  * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
 178  * XXX: I'm not sure if this file is the right place for this structure...
 179  */
 180 struct icmp6_ifstat {
 181         /*
 182          * Input statistics
 183          */
 184         /* ipv6IfIcmpInMsgs, total # of input messages */
 185         u_quad_t ifs6_in_msg;
 186         /* ipv6IfIcmpInErrors, # of input error messages */
 187         u_quad_t ifs6_in_error;
 188         /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
 189         u_quad_t ifs6_in_dstunreach;
 190         /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
 191         u_quad_t ifs6_in_adminprohib;
 192         /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
 193         u_quad_t ifs6_in_timeexceed;
 194         /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
 195         u_quad_t ifs6_in_paramprob;
 196         /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
 197         u_quad_t ifs6_in_pkttoobig;
 198         /* ipv6IfIcmpInEchos, # of input echo requests */
 199         u_quad_t ifs6_in_echo;
 200         /* ipv6IfIcmpInEchoReplies, # of input echo replies */
 201         u_quad_t ifs6_in_echoreply;
 202         /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
 203         u_quad_t ifs6_in_routersolicit;
 204         /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
 205         u_quad_t ifs6_in_routeradvert;
 206         /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
 207         u_quad_t ifs6_in_neighborsolicit;
 208         /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
 209         u_quad_t ifs6_in_neighboradvert;
 210         /* ipv6IfIcmpInRedirects, # of input redirects */
 211         u_quad_t ifs6_in_redirect;
 212         /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
 213         u_quad_t ifs6_in_mldquery;
 214         /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
 215         u_quad_t ifs6_in_mldreport;
 216         /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
 217         u_quad_t ifs6_in_mlddone;
 218
 219         /*
 220          * Output statistics. We should solve unresolved routing problem...
 221          */
 222         /* ipv6IfIcmpOutMsgs, total # of output messages */
 223         u_quad_t ifs6_out_msg;
 224         /* ipv6IfIcmpOutErrors, # of output error messages */
 225         u_quad_t ifs6_out_error;
 226         /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
 227         u_quad_t ifs6_out_dstunreach;
 228         /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
 229         u_quad_t ifs6_out_adminprohib;
 230         /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
 231         u_quad_t ifs6_out_timeexceed;
 232         /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
 233         u_quad_t ifs6_out_paramprob;
 234         /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
 235         u_quad_t ifs6_out_pkttoobig;
 236         /* ipv6IfIcmpOutEchos, # of output echo requests */
 237         u_quad_t ifs6_out_echo;
 238         /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
 239         u_quad_t ifs6_out_echoreply;
 240         /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
 241         u_quad_t ifs6_out_routersolicit;
 242         /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
 243         u_quad_t ifs6_out_routeradvert;
 244         /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
 245         u_quad_t ifs6_out_neighborsolicit;
 246         /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
 247         u_quad_t ifs6_out_neighboradvert;
 248         /* ipv6IfIcmpOutRedirects, # of output redirects */
 249         u_quad_t ifs6_out_redirect;
 250         /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
 251         u_quad_t ifs6_out_mldquery;
 252         /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
 253         u_quad_t ifs6_out_mldreport;
 254         /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
 255         u_quad_t ifs6_out_mlddone;
 256 };
 257
 258 /*
 259  * If you make changes that change the size of in6_ifreq,
 260  * make sure you fix compat/netinet6/in6_var.h
 261  */
 262 struct  in6_ifreq {
 263         char    ifr_name[IFNAMSIZ];
 264         union {
 265                 struct  sockaddr_in6 ifru_addr;
 266                 struct  sockaddr_in6 ifru_dstaddr;
 267                 short   ifru_flags;
 268                 int     ifru_flags6;
 269                 int     ifru_metric;
 270                 void *  ifru_data;
 271                 struct in6_addrlifetime ifru_lifetime;
 272                 struct in6_ifstat ifru_stat;
 273                 struct icmp6_ifstat ifru_icmp6stat;
 274         } ifr_ifru;
 275 };
 276
 277 struct  in6_aliasreq {
 278         char    ifra_name[IFNAMSIZ];
 279         struct  sockaddr_in6 ifra_addr;
 280         struct  sockaddr_in6 ifra_dstaddr;
 281         struct  sockaddr_in6 ifra_prefixmask;
 282         int     ifra_flags;
 283         struct in6_addrlifetime ifra_lifetime;
 284 };
 285
 286 /* prefix type macro */
 287 #define IN6_PREFIX_ND   1
 288 #define IN6_PREFIX_RR   2
 289
 290 /*
 291  * prefix related flags passed between kernel(NDP related part) and
 292  * user land command(ifconfig) and daemon(rtadvd).
 293  * Note: We originally intended to use prf_ra{} only within in6_prflags{}, but
 294  * it was (probably unintentionally) used in nd6.h as well.  Since C++ does
 295  * not allow such a reference, prf_ra{} was then moved outside.  In general,
 296  * however, this structure should not be used directly.
 297  */
 298 struct prf_ra {
 299         u_int32_t onlink : 1;
 300         u_int32_t autonomous : 1;
 301         u_int32_t router : 1;
 302         u_int32_t reserved : 5;
 303 };
 304
 305 struct in6_prflags {
 306         struct prf_ra prf_ra;
 307         u_char prf_reserved1;
 308         u_short prf_reserved2;
 309         /* want to put this on 4byte offset */
 310         struct prf_rr {
 311                 u_int32_t decrvalid : 1;
 312                 u_int32_t decrprefd : 1;
 313                 u_int32_t reserved : 6;
 314         } prf_rr;
 315         u_char prf_reserved3;
 316         u_short prf_reserved4;
 317 };
 318
 319 struct  in6_prefixreq {
 320         char    ipr_name[IFNAMSIZ];
 321         u_char  ipr_origin;
 322         u_char  ipr_plen;
 323         u_int32_t ipr_vltime;
 324         u_int32_t ipr_pltime;
 325         struct in6_prflags ipr_flags;
 326         struct  sockaddr_in6 ipr_prefix;
 327 };
 328
 329 #define PR_ORIG_RA      0
 330 #define PR_ORIG_RR      1
 331 #define PR_ORIG_STATIC  2
 332 #define PR_ORIG_KERNEL  3
 333
 334 #define ipr_raf_onlink          ipr_flags.prf_ra.onlink
 335 #define ipr_raf_auto            ipr_flags.prf_ra.autonomous
 336
 337 #define ipr_statef_onlink       ipr_flags.prf_state.onlink
 338
 339 #define ipr_rrf_decrvalid       ipr_flags.prf_rr.decrvalid
 340 #define ipr_rrf_decrprefd       ipr_flags.prf_rr.decrprefd
 341
 342 struct  in6_rrenumreq {
 343         char    irr_name[IFNAMSIZ];
 344         u_char  irr_origin;
 345         u_char  irr_m_len;      /* match len for matchprefix */
 346         u_char  irr_m_minlen;   /* minlen for matching prefix */
 347         u_char  irr_m_maxlen;   /* maxlen for matching prefix */
 348         u_char  irr_u_uselen;   /* uselen for adding prefix */
 349         u_char  irr_u_keeplen;  /* keeplen from matching prefix */
 350         struct irr_raflagmask {
 351                 u_int32_t onlink : 1;
 352                 u_int32_t autonomous : 1;
 353                 u_int32_t reserved : 6;
 354         } irr_raflagmask;
 355         u_int32_t irr_vltime;
 356         u_int32_t irr_pltime;
 357         struct in6_prflags irr_flags;
 358         struct  sockaddr_in6 irr_matchprefix;
 359         struct  sockaddr_in6 irr_useprefix;
 360 };
 361
 362 #define irr_raf_mask_onlink     irr_raflagmask.onlink
 363 #define irr_raf_mask_auto       irr_raflagmask.autonomous
 364 #define irr_raf_mask_reserved   irr_raflagmask.reserved
 365
 366 #define irr_raf_onlink          irr_flags.prf_ra.onlink
 367 #define irr_raf_auto            irr_flags.prf_ra.autonomous
 368
 369 #define irr_statef_onlink       irr_flags.prf_state.onlink
 370
 371 #define irr_rrf                 irr_flags.prf_rr
 372 #define irr_rrf_decrvalid       irr_flags.prf_rr.decrvalid
 373 #define irr_rrf_decrprefd       irr_flags.prf_rr.decrprefd
 374
 375 /*
 376  * Given a pointer to an in6_ifaddr (ifaddr),
 377  * return a pointer to the addr as a sockaddr_in6
 378  */
 379 #define IA6_IN6(ia)     (&((ia)->ia_addr.sin6_addr))
 380 #define IA6_DSTIN6(ia)  (&((ia)->ia_dstaddr.sin6_addr))
 381 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
 382 #define IA6_SIN6(ia)    (&((ia)->ia_addr))
 383 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
 384 #define IFA_IN6(x)      (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
 385 #define IFA_DSTIN6(x)   (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
 386
 387 #ifdef _KERNEL
 388 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m)      (       \
 389         (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
 390         (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
 391         (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
 392         (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
 393 #endif
 394
 395 #define SIOCSIFADDR_IN6          _IOW('i', 12, struct in6_ifreq)
 396 #define SIOCGIFADDR_IN6         _IOWR('i', 33, struct in6_ifreq)
 397
 398 #ifdef _KERNEL
 399 /*
 400  * SIOCSxxx ioctls should be unused (see comments in in6.c), but
 401  * we do not shift numbers for binary compatibility.
 402  */
 403 #define SIOCSIFDSTADDR_IN6       _IOW('i', 14, struct in6_ifreq)
 404 #define SIOCSIFNETMASK_IN6       _IOW('i', 22, struct in6_ifreq)
 405 #endif
 406
 407 #define SIOCGIFDSTADDR_IN6      _IOWR('i', 34, struct in6_ifreq)
 408 #define SIOCGIFNETMASK_IN6      _IOWR('i', 37, struct in6_ifreq)
 409
 410 #define SIOCDIFADDR_IN6          _IOW('i', 25, struct in6_ifreq)
 411 /* 26 was OSIOCAIFADDR_IN6 */
 412
 413 /* 70 was OSIOCSIFPHYADDR_IN6 */
 414 #define SIOCGIFPSRCADDR_IN6     _IOWR('i', 71, struct in6_ifreq)
 415 #define SIOCGIFPDSTADDR_IN6     _IOWR('i', 72, struct in6_ifreq)
 416
 417 #define SIOCGIFAFLAG_IN6        _IOWR('i', 73, struct in6_ifreq)
 418
 419 #define SIOCGDRLST_IN6          _IOWR('i', 74, struct in6_drlist)
 420 #define SIOCGPRLST_IN6          _IOWR('i', 75, struct in6_oprlist)
 421 #ifdef _KERNEL
 422 #define OSIOCGIFINFO_IN6        _IOWR('i', 76, struct in6_ondireq)
 423 #endif
 424 #define SIOCSNDFLUSH_IN6        _IOWR('i', 77, struct in6_ifreq)
 425 #define SIOCGNBRINFO_IN6        _IOWR('i', 78, struct in6_nbrinfo)
 426 #define SIOCSPFXFLUSH_IN6       _IOWR('i', 79, struct in6_ifreq)
 427 #define SIOCSRTRFLUSH_IN6       _IOWR('i', 80, struct in6_ifreq)
 428 /* 81 was old SIOCGIFALIFETIME_IN6 */
 429 #if 0
 430 /* withdrawn - do not reuse number 82 */
 431 #define SIOCSIFALIFETIME_IN6    _IOWR('i', 82, struct in6_ifreq)
 432 #endif
 433 #define SIOCGIFSTAT_IN6         _IOWR('i', 83, struct in6_ifreq)
 434 #define SIOCGIFSTAT_ICMP6       _IOWR('i', 84, struct in6_ifreq)
 435
 436 #define SIOCSDEFIFACE_IN6       _IOWR('i', 85, struct in6_ndifreq)
 437 #define SIOCGDEFIFACE_IN6       _IOWR('i', 86, struct in6_ndifreq)
 438
 439 #define SIOCSIFINFO_FLAGS       _IOWR('i', 87, struct in6_ndireq) /* XXX */
 440
 441 #define SIOCSIFPREFIX_IN6       _IOW('i', 100, struct in6_prefixreq) /* set */
 442 #define SIOCGIFPREFIX_IN6       _IOWR('i', 101, struct in6_prefixreq) /* get */
 443 #define SIOCDIFPREFIX_IN6       _IOW('i', 102, struct in6_prefixreq) /* del */
 444 #define SIOCAIFPREFIX_IN6       _IOW('i', 103, struct in6_rrenumreq) /* add */
 445 #define SIOCCIFPREFIX_IN6       _IOW('i', 104, \
 446                                      struct in6_rrenumreq) /* change */
 447 #define SIOCSGIFPREFIX_IN6      _IOW('i', 105, \
 448                                      struct in6_rrenumreq) /* set global */
 449 #define SIOCGIFALIFETIME_IN6    _IOWR('i', 106, struct in6_ifreq)
 450 #define SIOCAIFADDR_IN6         _IOW('i', 107, struct in6_aliasreq)
 451 #define SIOCGIFINFO_IN6         _IOWR('i', 108, struct in6_ndireq)
 452 #define SIOCSIFINFO_IN6         _IOWR('i', 109, struct in6_ndireq)
 453 #define SIOCSIFPHYADDR_IN6      _IOW('i', 110, struct in6_aliasreq)
 454
 455
 456 /* XXX: Someone decided to switch to 'u' here for unknown reasons! */
 457 #define SIOCGETSGCNT_IN6        _IOWR('u', 106, \
 458                                       struct sioc_sg_req6) /* get s,g pkt cnt */
 459 #define SIOCGETMIFCNT_IN6       _IOWR('u', 107, \
 460                                       struct sioc_mif_req6) /* get pkt cnt per if */
 461 #define SIOCAADDRCTL_POLICY     _IOW('u', 108, struct in6_addrpolicy)
 462 #define SIOCDADDRCTL_POLICY     _IOW('u', 109, struct in6_addrpolicy)
 463
 464 #define IN6_IFF_ANYCAST         0x01    /* anycast address */
 465 #define IN6_IFF_TENTATIVE       0x02    /* tentative address */
 466 #define IN6_IFF_DUPLICATED      0x04    /* DAD detected duplicate */
 467 #define IN6_IFF_DETACHED        0x08    /* may be detached from the link */
 468 #define IN6_IFF_DEPRECATED      0x10    /* deprecated address */
 469 #define IN6_IFF_NODAD           0x20    /* don't perform DAD on this address
 470                                          * (used only at first SIOC* call)
 471                                          */
 472 #define IN6_IFF_AUTOCONF        0x40    /* autoconfigurable address. */
 473 #define IN6_IFF_TEMPORARY       0x80    /* temporary (anonymous) address. */
 474
 475 /* do not input/output */
 476 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
 477
 478 #ifdef _KERNEL
 479 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
 480 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
 481 #endif
 482
 483 #ifdef _KERNEL
 484
 485 #include <net/pktqueue.h>
 486
 487 extern pktqueue_t *ip6_pktq;
 488
 489 MALLOC_DECLARE(M_IP6OPT);
 490
 491 extern struct in6_ifaddr *in6_ifaddr;
 492
 493 #define in6_ifstat_inc(ifp, tag) \
 494 do {                                                            \
 495         if (ifp)                                                \
 496                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \
 497 } while (/*CONSTCOND*/ 0)
 498
 499 extern const struct in6_addr zeroin6_addr;
 500 extern const u_char inet6ctlerrmap[];
 501 extern unsigned long in6_maxmtu;
 502 extern bool in6_present;
 503
 504 /*
 505  * Macro for finding the internet address structure (in6_ifaddr) corresponding
 506  * to a given interface (ifnet structure).
 507  */
 508 static inline struct in6_ifaddr *
 509 ifp_to_ia6(struct ifnet *ifp)
 510 {
 511         struct ifaddr *ifa;
 512
 513         IFADDR_FOREACH(ifa, ifp) {
 514                 if (ifa->ifa_addr == NULL)
 515                         continue;
 516                 if (ifa->ifa_addr->sa_family == AF_INET6)
 517                         break;
 518         }
 519         return (struct in6_ifaddr *)ifa;
 520 }
 521
 522 #define IFP_TO_IA6(__ifp, __ia)                         \
 523 do {                                                    \
 524         (__ia) = ifp_to_ia6((__ifp));                           \
 525 } while (/*CONSTCOND*/0)
 526
 527
 528 #endif /* _KERNEL */
 529
 530 /*
 531  * Multi-cast membership entry.  One for each group/ifp that a PCB
 532  * belongs to.
 533  */
 534 struct in6_multi_mship {
 535         struct  in6_multi *i6mm_maddr;  /* Multicast address pointer */
 536         LIST_ENTRY(in6_multi_mship) i6mm_chain;  /* multicast options chain */
 537 };
 538
 539 struct  in6_multi {
 540         LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
 541         struct  in6_addr in6m_addr;     /* IP6 multicast address */
 542         struct  ifnet *in6m_ifp;        /* back pointer to ifnet */
 543         struct  in6_ifaddr *in6m_ia;    /* back pointer to in6_ifaddr */
 544         u_int   in6m_refcount;          /* # membership claims by sockets */
 545         u_int   in6m_state;             /* state of the membership */
 546         int     in6m_timer;             /* delay to send the 1st report */
 547         struct timeval in6m_timer_expire; /* when the timer expires */
 548         callout_t in6m_timer_ch;
 549 };
 550
 551 #define IN6M_TIMER_UNDEF -1
 552
 553
 554 #ifdef _KERNEL
 555 /* flags to in6_update_ifa */
 556 #define IN6_IFAUPDATE_DADDELAY  0x1 /* first time to configure an address */
 557
 558 /*
 559  * Structure used by macros below to remember position when stepping through
 560  * all of the in6_multi records.
 561  */
 562 struct  in6_multistep {
 563         struct  in6_ifaddr *i_ia;
 564         struct  in6_multi *i_in6m;
 565 };
 566
 567 /*
 568  * Macros for looking up the in6_multi record for a given IP6 multicast
 569  * address on a given interface. If no matching record is found, "in6m"
 570  * returns NULL.
 571  */
 572
 573 static inline struct in6_multi *
 574 in6_lookup_multi(struct in6_addr *addr, struct ifnet *ifp)
 575 {
 576         struct in6_multi *in6m;
 577         struct in6_ifaddr *ia;
 578
 579         if ((ia = ifp_to_ia6(ifp)) == NULL)
 580                 return NULL;
 581         LIST_FOREACH(in6m, &ia->ia6_multiaddrs, in6m_entry) {
 582                 if (IN6_ARE_ADDR_EQUAL(&in6m->in6m_addr, addr))
 583                         break;
 584         }
 585         return in6m;
 586 }
 587
 588 #define IN6_LOOKUP_MULTI(__addr, __ifp, __in6m)                 \
 589 /* struct in6_addr __addr; */                                   \
 590 /* struct ifnet *__ifp; */                                      \
 591 /* struct in6_multi *__in6m; */                                 \
 592 do {                                                            \
 593         (__in6m) = in6_lookup_multi(&(__addr), (__ifp));        \
 594 } while (/*CONSTCOND*/ 0)
 595
 596 /*
 597  * Macro to step through all of the in6_multi records, one at a time.
 598  * The current position is remembered in "step", which the caller must
 599  * provide.  IN6_FIRST_MULTI(), below, must be called to initialize "step"
 600  * and get the first record.  Both macros return a NULL "in6m" when there
 601  * are no remaining records.
 602  */
 603 static inline struct in6_multi *
 604 in6_next_multi(struct in6_multistep *step)
 605 {
 606         struct in6_multi *in6m;
 607
 608         if ((in6m = step->i_in6m) != NULL) {
 609                 step->i_in6m = LIST_NEXT(in6m, in6m_entry);
 610                 return in6m;
 611         }
 612         while (step->i_ia != NULL) {
 613                 in6m = LIST_FIRST(&step->i_ia->ia6_multiaddrs);
 614                 step->i_ia = step->i_ia->ia_next;
 615                 if (in6m != NULL) {
 616                         step->i_in6m = LIST_NEXT(in6m, in6m_entry);
 617                         break;
 618                 }
 619         }
 620         return in6m;
 621 }
 622
 623 static inline struct in6_multi *
 624 in6_first_multi(struct in6_multistep *step)
 625 {
 626         step->i_ia = in6_ifaddr;
 627         step->i_in6m = NULL;
 628         return in6_next_multi(step);
 629 }
 630
 631 #define IN6_NEXT_MULTI(__step, __in6m)          \
 632 /* struct in6_multistep __step; */              \
 633 /* struct in6_multi *__in6m; */                 \
 634 do {                                            \
 635         (__in6m) = in6_next_multi(&(__step));   \
 636 } while (/*CONSTCOND*/ 0)
 637
 638 #define IN6_FIRST_MULTI(__step, __in6m)         \
 639 /* struct in6_multistep __step; */              \
 640 /* struct in6_multi *__in6m */                  \
 641 do {                                            \
 642         (__in6m) = in6_first_multi(&(__step));  \
 643 } while (/*CONSTCOND*/ 0)
 644
 645
 646 #if 0
 647 /*
 648  * Macros for looking up the in6_multi_mship record for a given IP6 multicast
 649  * address on a given interface. If no matching record is found, "imm"
 650  * returns NULL.
 651  */
 652 static inline struct in6_multi_mship *
 653 in6_lookup_mship(struct in6_addr *addr, struct ifnet *ifp,
 654     struct ip6_moptions *imop)
 655 {
 656         struct in6_multi_mship *imm;
 657
 658         LIST_FOREACH(imm, &imop->im6o_memberships, i6mm_chain) {
 659                 if (imm->i6mm_maddr->in6m_ifp != ifp)
 660                         continue;
 661                 if (IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr,
 662                     addr))
 663                         break;
 664         }
 665         return imm;
 666 }
 667
 668 #define IN6_LOOKUP_MSHIP(__addr, __ifp, __imop, __imm)                  \
 669 /* struct in6_addr __addr; */                                           \
 670 /* struct ifnet *__ifp; */                                              \
 671 /* struct ip6_moptions *__imop */                                       \
 672 /* struct in6_multi_mship *__imm; */                                    \
 673 do {                                                                    \
 674         (__imm) = in6_lookup_mship(&(__addr), (__ifp), (__imop));       \
 675 } while (/*CONSTCOND*/ 0)
 676 #endif
 677
 678 struct  in6_multi *in6_addmulti(struct in6_addr *, struct ifnet *,
 679         int *, int);
 680 void    in6_delmulti(struct in6_multi *);
 681 struct in6_multi_mship *in6_joingroup(struct ifnet *, struct in6_addr *,
 682         int *, int);
 683 int     in6_leavegroup(struct in6_multi_mship *);
 684 int     in6_mask2len(struct in6_addr *, u_char *);
 685 int     in6_control(struct socket *, u_long, void *, struct ifnet *);
 686 int     in6_update_ifa(struct ifnet *, struct in6_aliasreq *,
 687         struct in6_ifaddr *, int);
 688 void    in6_purgeaddr(struct ifaddr *);
 689 void    in6_purgeif(struct ifnet *);
 690 void    in6_savemkludge(struct in6_ifaddr *);
 691 void    in6_setmaxmtu  (void);
 692 int     in6_if2idlen  (struct ifnet *);
 693 void    *in6_domifattach(struct ifnet *);
 694 void    in6_domifdetach(struct ifnet *, void *);
 695 void    in6_restoremkludge(struct in6_ifaddr *, struct ifnet *);
 696 void    in6_ifremlocal(struct ifaddr *);
 697 void    in6_ifaddlocal(struct ifaddr *);
 698 void    in6_createmkludge(struct ifnet *);
 699 void    in6_purgemkludge(struct ifnet *);
 700 struct in6_ifaddr *in6ifa_ifpforlinklocal(const struct ifnet *, int);
 701 struct in6_ifaddr *in6ifa_ifpwithaddr(const struct ifnet *,
 702     const struct in6_addr *);
 703 char    *ip6_sprintf(const struct in6_addr *);
 704 int     in6_matchlen(struct in6_addr *, struct in6_addr *);
 705 int     in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int);
 706 void    in6_prefixlen2mask(struct in6_addr *, int);
 707 void    in6_purgeprefix(struct ifnet *);
 708
 709 int     ip6flow_fastforward(struct mbuf **); /* IPv6 fast forward routine */
 710
 711 int in6_src_ioctl(u_long, void *);
 712 int     in6_is_addr_deprecated(struct sockaddr_in6 *);
 713 struct in6pcb;
 714 #endif /* _KERNEL */
 715
 716 #endif /* !_NETINET6_IN6_VAR_H_ */