The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6_var.h

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    1 /*      $FreeBSD: releng/5.3/sys/netinet6/in6_var.h 136588 2004-10-16 08:43:07Z cvs2svn $       */
    2 /*      $KAME: in6_var.h,v 1.56 2001/03/29 05:34:31 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  * 4. 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 /*
   68  * Interface address, Internet version.  One of these structures
   69  * is allocated for each interface with an Internet address.
   70  * The ifaddr structure contains the protocol-independent part
   71  * of the structure and is assumed to be first.
   72  */
   73 
   74 /*
   75  * pltime/vltime are just for future reference (required to implements 2
   76  * hour rule for hosts).  they should never be modified by nd6_timeout or
   77  * anywhere else.
   78  *      userland -> kernel: accept pltime/vltime
   79  *      kernel -> userland: throw up everything
   80  *      in kernel: modify preferred/expire only
   81  */
   82 struct in6_addrlifetime {
   83         time_t ia6t_expire;     /* valid lifetime expiration time */
   84         time_t ia6t_preferred;  /* preferred lifetime expiration time */
   85         u_int32_t ia6t_vltime;  /* valid lifetime */
   86         u_int32_t ia6t_pltime;  /* prefix lifetime */
   87 };
   88 
   89 struct nd_ifinfo;
   90 struct scope6_id;
   91 struct in6_ifextra {
   92         struct in6_ifstat *in6_ifstat;
   93         struct icmp6_ifstat *icmp6_ifstat;
   94         struct nd_ifinfo *nd_ifinfo;
   95         struct scope6_id *scope6_id;
   96 };
   97 
   98 struct  in6_ifaddr {
   99         struct  ifaddr ia_ifa;          /* protocol-independent info */
  100 #define ia_ifp          ia_ifa.ifa_ifp
  101 #define ia_flags        ia_ifa.ifa_flags
  102         struct  sockaddr_in6 ia_addr;   /* interface address */
  103         struct  sockaddr_in6 ia_net;    /* network number of interface */
  104         struct  sockaddr_in6 ia_dstaddr; /* space for destination addr */
  105         struct  sockaddr_in6 ia_prefixmask; /* prefix mask */
  106         u_int32_t ia_plen;              /* prefix length */
  107         struct  in6_ifaddr *ia_next;    /* next in6 list of IP6 addresses */
  108         int     ia6_flags;
  109 
  110         struct in6_addrlifetime ia6_lifetime;
  111         struct ifprefix *ia6_ifpr; /* back pointer to ifprefix */
  112 
  113         /* back pointer to the ND prefix (for autoconfigured addresses only) */
  114         struct nd_prefix *ia6_ndpr;
  115 };
  116 
  117 /* control structure to manage address selection policy */
  118 struct in6_addrpolicy {
  119         struct sockaddr_in6 addr; /* prefix address */
  120         struct sockaddr_in6 addrmask; /* prefix mask */
  121         int preced;             /* precedence */
  122         int label;              /* matching label */
  123         u_quad_t use;           /* statistics */
  124 };
  125 
  126 /*
  127  * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
  128  */
  129 struct in6_ifstat {
  130         u_quad_t ifs6_in_receive;       /* # of total input datagram */
  131         u_quad_t ifs6_in_hdrerr;        /* # of datagrams with invalid hdr */
  132         u_quad_t ifs6_in_toobig;        /* # of datagrams exceeded MTU */
  133         u_quad_t ifs6_in_noroute;       /* # of datagrams with no route */
  134         u_quad_t ifs6_in_addrerr;       /* # of datagrams with invalid dst */
  135         u_quad_t ifs6_in_protounknown;  /* # of datagrams with unknown proto */
  136                                         /* NOTE: increment on final dst if */
  137         u_quad_t ifs6_in_truncated;     /* # of truncated datagrams */
  138         u_quad_t ifs6_in_discard;       /* # of discarded datagrams */
  139                                         /* NOTE: fragment timeout is not here */
  140         u_quad_t ifs6_in_deliver;       /* # of datagrams delivered to ULP */
  141                                         /* NOTE: increment on final dst if */
  142         u_quad_t ifs6_out_forward;      /* # of datagrams forwarded */
  143                                         /* NOTE: increment on outgoing if */
  144         u_quad_t ifs6_out_request;      /* # of outgoing datagrams from ULP */
  145                                         /* NOTE: does not include forwrads */
  146         u_quad_t ifs6_out_discard;      /* # of discarded datagrams */
  147         u_quad_t ifs6_out_fragok;       /* # of datagrams fragmented */
  148         u_quad_t ifs6_out_fragfail;     /* # of datagrams failed on fragment */
  149         u_quad_t ifs6_out_fragcreat;    /* # of fragment datagrams */
  150                                         /* NOTE: this is # after fragment */
  151         u_quad_t ifs6_reass_reqd;       /* # of incoming fragmented packets */
  152                                         /* NOTE: increment on final dst if */
  153         u_quad_t ifs6_reass_ok;         /* # of reassembled packets */
  154                                         /* NOTE: this is # after reass */
  155                                         /* NOTE: increment on final dst if */
  156         u_quad_t ifs6_reass_fail;       /* # of reass failures */
  157                                         /* NOTE: may not be packet count */
  158                                         /* NOTE: increment on final dst if */
  159         u_quad_t ifs6_in_mcast;         /* # of inbound multicast datagrams */
  160         u_quad_t ifs6_out_mcast;        /* # of outbound multicast datagrams */
  161 };
  162 
  163 /*
  164  * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
  165  * XXX: I'm not sure if this file is the right place for this structure...
  166  */
  167 struct icmp6_ifstat {
  168         /*
  169          * Input statistics
  170          */
  171         /* ipv6IfIcmpInMsgs, total # of input messages */
  172         u_quad_t ifs6_in_msg;
  173         /* ipv6IfIcmpInErrors, # of input error messages */
  174         u_quad_t ifs6_in_error;
  175         /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
  176         u_quad_t ifs6_in_dstunreach;
  177         /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
  178         u_quad_t ifs6_in_adminprohib;
  179         /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
  180         u_quad_t ifs6_in_timeexceed;
  181         /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
  182         u_quad_t ifs6_in_paramprob;
  183         /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
  184         u_quad_t ifs6_in_pkttoobig;
  185         /* ipv6IfIcmpInEchos, # of input echo requests */
  186         u_quad_t ifs6_in_echo;
  187         /* ipv6IfIcmpInEchoReplies, # of input echo replies */
  188         u_quad_t ifs6_in_echoreply;
  189         /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
  190         u_quad_t ifs6_in_routersolicit;
  191         /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
  192         u_quad_t ifs6_in_routeradvert;
  193         /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
  194         u_quad_t ifs6_in_neighborsolicit;
  195         /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
  196         u_quad_t ifs6_in_neighboradvert;
  197         /* ipv6IfIcmpInRedirects, # of input redirects */
  198         u_quad_t ifs6_in_redirect;
  199         /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
  200         u_quad_t ifs6_in_mldquery;
  201         /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
  202         u_quad_t ifs6_in_mldreport;
  203         /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
  204         u_quad_t ifs6_in_mlddone;
  205 
  206         /*
  207          * Output statistics. We should solve unresolved routing problem...
  208          */
  209         /* ipv6IfIcmpOutMsgs, total # of output messages */
  210         u_quad_t ifs6_out_msg;
  211         /* ipv6IfIcmpOutErrors, # of output error messages */
  212         u_quad_t ifs6_out_error;
  213         /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
  214         u_quad_t ifs6_out_dstunreach;
  215         /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
  216         u_quad_t ifs6_out_adminprohib;
  217         /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
  218         u_quad_t ifs6_out_timeexceed;
  219         /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
  220         u_quad_t ifs6_out_paramprob;
  221         /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
  222         u_quad_t ifs6_out_pkttoobig;
  223         /* ipv6IfIcmpOutEchos, # of output echo requests */
  224         u_quad_t ifs6_out_echo;
  225         /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
  226         u_quad_t ifs6_out_echoreply;
  227         /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
  228         u_quad_t ifs6_out_routersolicit;
  229         /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
  230         u_quad_t ifs6_out_routeradvert;
  231         /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
  232         u_quad_t ifs6_out_neighborsolicit;
  233         /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
  234         u_quad_t ifs6_out_neighboradvert;
  235         /* ipv6IfIcmpOutRedirects, # of output redirects */
  236         u_quad_t ifs6_out_redirect;
  237         /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
  238         u_quad_t ifs6_out_mldquery;
  239         /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
  240         u_quad_t ifs6_out_mldreport;
  241         /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
  242         u_quad_t ifs6_out_mlddone;
  243 };
  244 
  245 struct  in6_ifreq {
  246         char    ifr_name[IFNAMSIZ];
  247         union {
  248                 struct  sockaddr_in6 ifru_addr;
  249                 struct  sockaddr_in6 ifru_dstaddr;
  250                 int     ifru_flags;
  251                 int     ifru_flags6;
  252                 int     ifru_metric;
  253                 caddr_t ifru_data;
  254                 struct in6_addrlifetime ifru_lifetime;
  255                 struct in6_ifstat ifru_stat;
  256                 struct icmp6_ifstat ifru_icmp6stat;
  257                 u_int32_t ifru_scope_id[16];
  258         } ifr_ifru;
  259 };
  260 
  261 struct  in6_aliasreq {
  262         char    ifra_name[IFNAMSIZ];
  263         struct  sockaddr_in6 ifra_addr;
  264         struct  sockaddr_in6 ifra_dstaddr;
  265         struct  sockaddr_in6 ifra_prefixmask;
  266         int     ifra_flags;
  267         struct in6_addrlifetime ifra_lifetime;
  268 };
  269 
  270 /* prefix type macro */
  271 #define IN6_PREFIX_ND   1
  272 #define IN6_PREFIX_RR   2
  273 
  274 /*
  275  * prefix related flags passed between kernel(NDP related part) and
  276  * user land command(ifconfig) and daemon(rtadvd).
  277  */
  278 struct in6_prflags {
  279         struct prf_ra {
  280                 u_char onlink : 1;
  281                 u_char autonomous : 1;
  282                 u_char reserved : 6;
  283         } prf_ra;
  284         u_char prf_reserved1;
  285         u_short prf_reserved2;
  286         /* want to put this on 4byte offset */
  287         struct prf_rr {
  288                 u_char decrvalid : 1;
  289                 u_char decrprefd : 1;
  290                 u_char reserved : 6;
  291         } prf_rr;
  292         u_char prf_reserved3;
  293         u_short prf_reserved4;
  294 };
  295 
  296 struct  in6_prefixreq {
  297         char    ipr_name[IFNAMSIZ];
  298         u_char  ipr_origin;
  299         u_char  ipr_plen;
  300         u_int32_t ipr_vltime;
  301         u_int32_t ipr_pltime;
  302         struct in6_prflags ipr_flags;
  303         struct  sockaddr_in6 ipr_prefix;
  304 };
  305 
  306 #define PR_ORIG_RA      0
  307 #define PR_ORIG_RR      1
  308 #define PR_ORIG_STATIC  2
  309 #define PR_ORIG_KERNEL  3
  310 
  311 #define ipr_raf_onlink          ipr_flags.prf_ra.onlink
  312 #define ipr_raf_auto            ipr_flags.prf_ra.autonomous
  313 
  314 #define ipr_statef_onlink       ipr_flags.prf_state.onlink
  315 
  316 #define ipr_rrf_decrvalid       ipr_flags.prf_rr.decrvalid
  317 #define ipr_rrf_decrprefd       ipr_flags.prf_rr.decrprefd
  318 
  319 struct  in6_rrenumreq {
  320         char    irr_name[IFNAMSIZ];
  321         u_char  irr_origin;
  322         u_char  irr_m_len;      /* match len for matchprefix */
  323         u_char  irr_m_minlen;   /* minlen for matching prefix */
  324         u_char  irr_m_maxlen;   /* maxlen for matching prefix */
  325         u_char  irr_u_uselen;   /* uselen for adding prefix */
  326         u_char  irr_u_keeplen;  /* keeplen from matching prefix */
  327         struct irr_raflagmask {
  328                 u_char onlink : 1;
  329                 u_char autonomous : 1;
  330                 u_char reserved : 6;
  331         } irr_raflagmask;
  332         u_int32_t irr_vltime;
  333         u_int32_t irr_pltime;
  334         struct in6_prflags irr_flags;
  335         struct  sockaddr_in6 irr_matchprefix;
  336         struct  sockaddr_in6 irr_useprefix;
  337 };
  338 
  339 #define irr_raf_mask_onlink     irr_raflagmask.onlink
  340 #define irr_raf_mask_auto       irr_raflagmask.autonomous
  341 #define irr_raf_mask_reserved   irr_raflagmask.reserved
  342 
  343 #define irr_raf_onlink          irr_flags.prf_ra.onlink
  344 #define irr_raf_auto            irr_flags.prf_ra.autonomous
  345 
  346 #define irr_statef_onlink       irr_flags.prf_state.onlink
  347 
  348 #define irr_rrf                 irr_flags.prf_rr
  349 #define irr_rrf_decrvalid       irr_flags.prf_rr.decrvalid
  350 #define irr_rrf_decrprefd       irr_flags.prf_rr.decrprefd
  351 
  352 /*
  353  * Given a pointer to an in6_ifaddr (ifaddr),
  354  * return a pointer to the addr as a sockaddr_in6
  355  */
  356 #define IA6_IN6(ia)     (&((ia)->ia_addr.sin6_addr))
  357 #define IA6_DSTIN6(ia)  (&((ia)->ia_dstaddr.sin6_addr))
  358 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
  359 #define IA6_SIN6(ia)    (&((ia)->ia_addr))
  360 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
  361 #define IFA_IN6(x)      (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
  362 #define IFA_DSTIN6(x)   (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
  363 
  364 #define IFPR_IN6(x)     (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
  365 
  366 #ifdef _KERNEL
  367 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m)      (       \
  368         (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
  369         (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
  370         (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
  371         (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
  372 #endif
  373 
  374 #define SIOCSIFADDR_IN6          _IOW('i', 12, struct in6_ifreq)
  375 #define SIOCGIFADDR_IN6         _IOWR('i', 33, struct in6_ifreq)
  376 
  377 #ifdef _KERNEL
  378 /*
  379  * SIOCSxxx ioctls should be unused (see comments in in6.c), but
  380  * we do not shift numbers for binary compatibility.
  381  */
  382 #define SIOCSIFDSTADDR_IN6       _IOW('i', 14, struct in6_ifreq)
  383 #define SIOCSIFNETMASK_IN6       _IOW('i', 22, struct in6_ifreq)
  384 #endif
  385 
  386 #define SIOCGIFDSTADDR_IN6      _IOWR('i', 34, struct in6_ifreq)
  387 #define SIOCGIFNETMASK_IN6      _IOWR('i', 37, struct in6_ifreq)
  388 
  389 #define SIOCDIFADDR_IN6          _IOW('i', 25, struct in6_ifreq)
  390 #define SIOCAIFADDR_IN6          _IOW('i', 26, struct in6_aliasreq)
  391 
  392 #define SIOCSIFPHYADDR_IN6       _IOW('i', 70, struct in6_aliasreq)
  393 #define SIOCGIFPSRCADDR_IN6     _IOWR('i', 71, struct in6_ifreq)
  394 #define SIOCGIFPDSTADDR_IN6     _IOWR('i', 72, struct in6_ifreq)
  395 
  396 #define SIOCGIFAFLAG_IN6        _IOWR('i', 73, struct in6_ifreq)
  397 
  398 #define SIOCGDRLST_IN6          _IOWR('i', 74, struct in6_drlist)
  399 #ifdef _KERNEL
  400 /* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */
  401 #define SIOCGPRLST_IN6          _IOWR('i', 75, struct in6_oprlist)
  402 #endif
  403 #ifdef _KERNEL
  404 #define OSIOCGIFINFO_IN6        _IOWR('i', 76, struct in6_ondireq)
  405 #endif
  406 #define SIOCGIFINFO_IN6         _IOWR('i', 108, struct in6_ndireq)
  407 #define SIOCSNDFLUSH_IN6        _IOWR('i', 77, struct in6_ifreq)
  408 #define SIOCGNBRINFO_IN6        _IOWR('i', 78, struct in6_nbrinfo)
  409 #define SIOCSPFXFLUSH_IN6       _IOWR('i', 79, struct in6_ifreq)
  410 #define SIOCSRTRFLUSH_IN6       _IOWR('i', 80, struct in6_ifreq)
  411 
  412 #define SIOCGIFALIFETIME_IN6    _IOWR('i', 81, struct in6_ifreq)
  413 #define SIOCSIFALIFETIME_IN6    _IOWR('i', 82, struct in6_ifreq)
  414 #define SIOCGIFSTAT_IN6         _IOWR('i', 83, struct in6_ifreq)
  415 #define SIOCGIFSTAT_ICMP6       _IOWR('i', 84, struct in6_ifreq)
  416 
  417 #define SIOCSDEFIFACE_IN6       _IOWR('i', 85, struct in6_ndifreq)
  418 #define SIOCGDEFIFACE_IN6       _IOWR('i', 86, struct in6_ndifreq)
  419 
  420 #define SIOCSIFINFO_FLAGS       _IOWR('i', 87, struct in6_ndireq) /* XXX */
  421 
  422 #define SIOCSSCOPE6             _IOW('i', 88, struct in6_ifreq)
  423 #define SIOCGSCOPE6             _IOWR('i', 89, struct in6_ifreq)
  424 #define SIOCGSCOPE6DEF          _IOWR('i', 90, struct in6_ifreq)
  425 
  426 #define SIOCSIFPREFIX_IN6       _IOW('i', 100, struct in6_prefixreq) /* set */
  427 #define SIOCGIFPREFIX_IN6       _IOWR('i', 101, struct in6_prefixreq) /* get */
  428 #define SIOCDIFPREFIX_IN6       _IOW('i', 102, struct in6_prefixreq) /* del */
  429 #define SIOCAIFPREFIX_IN6       _IOW('i', 103, struct in6_rrenumreq) /* add */
  430 #define SIOCCIFPREFIX_IN6       _IOW('i', 104, \
  431                                      struct in6_rrenumreq) /* change */
  432 #define SIOCSGIFPREFIX_IN6      _IOW('i', 105, \
  433                                      struct in6_rrenumreq) /* set global */
  434 
  435 #define SIOCGETSGCNT_IN6        _IOWR('u', 106, \
  436                                       struct sioc_sg_req6) /* get s,g pkt cnt */
  437 #define SIOCGETMIFCNT_IN6       _IOWR('u', 107, \
  438                                       struct sioc_mif_req6) /* get pkt cnt per if */
  439 
  440 #define SIOCAADDRCTL_POLICY     _IOW('u', 108, struct in6_addrpolicy)
  441 #define SIOCDADDRCTL_POLICY     _IOW('u', 109, struct in6_addrpolicy)
  442 
  443 #define IN6_IFF_ANYCAST         0x01    /* anycast address */
  444 #define IN6_IFF_TENTATIVE       0x02    /* tentative address */
  445 #define IN6_IFF_DUPLICATED      0x04    /* DAD detected duplicate */
  446 #define IN6_IFF_DETACHED        0x08    /* may be detached from the link */
  447 #define IN6_IFF_DEPRECATED      0x10    /* deprecated address */
  448 #define IN6_IFF_NODAD           0x20    /* don't perform DAD on this address
  449                                          * (used only at first SIOC* call)
  450                                          */
  451 #define IN6_IFF_AUTOCONF        0x40    /* autoconfigurable address. */
  452 #define IN6_IFF_TEMPORARY       0x80    /* temporary (anonymous) address. */
  453 #define IN6_IFF_NOPFX           0x8000  /* skip kernel prefix management.
  454                                          * XXX: this should be temporary.
  455                                          */
  456 
  457 /* do not input/output */
  458 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
  459 
  460 #ifdef _KERNEL
  461 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
  462 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
  463 #endif
  464 
  465 #ifdef _KERNEL
  466 extern struct in6_ifaddr *in6_ifaddr;
  467 
  468 extern struct icmp6stat icmp6stat;
  469 #define in6_ifstat_inc(ifp, tag) \
  470 do {                                                            \
  471         if (ifp)                                                \
  472                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \
  473 } while (/*CONSTCOND*/ 0)
  474 
  475 extern struct in6_addr zeroin6_addr;
  476 extern u_char inet6ctlerrmap[];
  477 extern unsigned long in6_maxmtu;
  478 #ifdef MALLOC_DECLARE
  479 MALLOC_DECLARE(M_IPMADDR);
  480 #endif /* MALLOC_DECLARE */
  481 
  482 /*
  483  * Macro for finding the internet address structure (in6_ifaddr) corresponding
  484  * to a given interface (ifnet structure).
  485  */
  486 
  487 #define IFP_TO_IA6(ifp, ia)                             \
  488 /* struct ifnet *ifp; */                                \
  489 /* struct in6_ifaddr *ia; */                            \
  490 do {                                                                    \
  491         struct ifaddr *ifa;                                             \
  492         for (ifa = (ifp)->if_addrlist.tqh_first; ifa; ifa = ifa->ifa_list.tqe_next) {   \
  493                 if (!ifa->ifa_addr)                                     \
  494                         continue;                                       \
  495                 if (ifa->ifa_addr->sa_family == AF_INET6)               \
  496                         break;                                          \
  497         }                                                               \
  498         (ia) = (struct in6_ifaddr *)ifa;                                \
  499 } while (/*CONSTCOND*/ 0)
  500 
  501 #endif /* _KERNEL */
  502 
  503 /*
  504  * Multi-cast membership entry.  One for each group/ifp that a PCB
  505  * belongs to.
  506  */
  507 struct in6_multi_mship {
  508         struct  in6_multi *i6mm_maddr;  /* Multicast address pointer */
  509         LIST_ENTRY(in6_multi_mship) i6mm_chain;  /* multicast options chain */
  510 };
  511 
  512 struct  in6_multi {
  513         LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
  514         struct  in6_addr in6m_addr;     /* IP6 multicast address */
  515         struct  ifnet *in6m_ifp;        /* back pointer to ifnet */
  516         struct  ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */
  517         u_int   in6m_refcount;          /* # membership claims by sockets */
  518         u_int   in6m_state;             /* state of the membership */
  519         u_int   in6m_timer;             /* MLD6 listener report timer */
  520 };
  521 
  522 #ifdef _KERNEL
  523 extern LIST_HEAD(in6_multihead, in6_multi) in6_multihead;
  524 
  525 /*
  526  * Structure used by macros below to remember position when stepping through
  527  * all of the in6_multi records.
  528  */
  529 struct  in6_multistep {
  530         struct  in6_ifaddr *i_ia;
  531         struct  in6_multi *i_in6m;
  532 };
  533 
  534 /*
  535  * Macros for looking up the in6_multi record for a given IP6 multicast
  536  * address on a given interface. If no matching record is found, "in6m"
  537  * returns NLL.
  538  */
  539 
  540 #define IN6_LOOKUP_MULTI(addr, ifp, in6m)                       \
  541 /* struct in6_addr addr; */                                     \
  542 /* struct ifnet *ifp; */                                        \
  543 /* struct in6_multi *in6m; */                                   \
  544 do { \
  545         struct ifmultiaddr *ifma; \
  546         TAILQ_FOREACH(ifma, &(ifp)->if_multiaddrs, ifma_link) { \
  547                 if (ifma->ifma_addr->sa_family == AF_INET6 \
  548                     && IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)ifma->ifma_addr)->sin6_addr, \
  549                                           &(addr))) \
  550                         break; \
  551         } \
  552         (in6m) = (struct in6_multi *)(ifma ? ifma->ifma_protospec : 0); \
  553 } while(0)
  554 
  555 /*
  556  * Macro to step through all of the in6_multi records, one at a time.
  557  * The current position is remembered in "step", which the caller must
  558  * provide.  IN6_FIRST_MULTI(), below, must be called to initialize "step"
  559  * and get the first record.  Both macros return a NULL "in6m" when there
  560  * are no remaining records.
  561  */
  562 #define IN6_NEXT_MULTI(step, in6m)                                      \
  563 /* struct in6_multistep step; */                                        \
  564 /* struct in6_multi *in6m; */                                           \
  565 do { \
  566         if (((in6m) = (step).i_in6m) != NULL) \
  567                 (step).i_in6m = (step).i_in6m->in6m_entry.le_next; \
  568 } while(0)
  569 
  570 #define IN6_FIRST_MULTI(step, in6m)             \
  571 /* struct in6_multistep step; */                \
  572 /* struct in6_multi *in6m */                    \
  573 do { \
  574         (step).i_in6m = in6_multihead.lh_first; \
  575                 IN6_NEXT_MULTI((step), (in6m)); \
  576 } while(0)
  577 
  578 struct  in6_multi *in6_addmulti __P((struct in6_addr *, struct ifnet *,
  579         int *));
  580 void    in6_delmulti __P((struct in6_multi *));
  581 int     in6_mask2len __P((struct in6_addr *, u_char *));
  582 int     in6_control __P((struct socket *, u_long, caddr_t, struct ifnet *,
  583         struct thread *));
  584 int     in6_update_ifa __P((struct ifnet *, struct in6_aliasreq *,
  585         struct in6_ifaddr *));
  586 void    in6_purgeaddr __P((struct ifaddr *));
  587 int     in6if_do_dad __P((struct ifnet *));
  588 void    in6_purgeif __P((struct ifnet *));
  589 void    in6_savemkludge __P((struct in6_ifaddr *));
  590 void    *in6_domifattach __P((struct ifnet *));
  591 void    in6_domifdetach __P((struct ifnet *, void *));
  592 void    in6_setmaxmtu   __P((void));
  593 void    in6_restoremkludge __P((struct in6_ifaddr *, struct ifnet *));
  594 void    in6_purgemkludge __P((struct ifnet *));
  595 struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *, int));
  596 struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *, struct in6_addr *));
  597 char    *ip6_sprintf __P((const struct in6_addr *));
  598 int     in6_addr2zoneid __P((struct ifnet *, struct in6_addr *, u_int32_t *));
  599 int     in6_matchlen __P((struct in6_addr *, struct in6_addr *));
  600 int     in6_are_prefix_equal __P((struct in6_addr *, struct in6_addr *, int));
  601 void    in6_prefixlen2mask __P((struct in6_addr *, int));
  602 int     in6_prefix_ioctl __P((struct socket *, u_long, caddr_t,
  603         struct ifnet *));
  604 int     in6_prefix_add_ifid __P((int, struct in6_ifaddr *));
  605 void    in6_prefix_remove_ifid __P((int, struct in6_ifaddr *));
  606 void    in6_purgeprefix __P((struct ifnet *));
  607 
  608 int     in6_is_addr_deprecated __P((struct sockaddr_in6 *));
  609 struct inpcb;
  610 int in6_embedscope __P((struct in6_addr *, const struct sockaddr_in6 *,
  611         struct inpcb *, struct ifnet **));
  612 int in6_recoverscope __P((struct sockaddr_in6 *, const struct in6_addr *,
  613         struct ifnet *));
  614 void in6_clearscope __P((struct in6_addr *));
  615 int in6_src_ioctl __P((u_long, caddr_t));
  616 #endif /* _KERNEL */
  617 
  618 #endif /* _NETINET6_IN6_VAR_H_ */

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