The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: 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 /*-
    2  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. Neither the name of the project nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      $KAME: in6_var.h,v 1.56 2001/03/29 05:34:31 itojun Exp $
   30  */
   31 
   32 /*-
   33  * Copyright (c) 1985, 1986, 1993
   34  *      The Regents of the University of California.  All rights reserved.
   35  *
   36  * Redistribution and use in source and binary forms, with or without
   37  * modification, are permitted provided that the following conditions
   38  * are met:
   39  * 1. Redistributions of source code must retain the above copyright
   40  *    notice, this list of conditions and the following disclaimer.
   41  * 2. Redistributions in binary form must reproduce the above copyright
   42  *    notice, this list of conditions and the following disclaimer in the
   43  *    documentation and/or other materials provided with the distribution.
   44  * 4. Neither the name of the University nor the names of its contributors
   45  *    may be used to endorse or promote products derived from this software
   46  *    without specific prior written permission.
   47  *
   48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   58  * SUCH DAMAGE.
   59  *
   60  *      @(#)in_var.h    8.1 (Berkeley) 6/10/93
   61  * $FreeBSD$
   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         time_t  ia6_createtime; /* the creation time of this address, which is
  112                                  * currently used for temporary addresses only.
  113                                  */
  114         time_t  ia6_updatetime;
  115 
  116         /* back pointer to the ND prefix (for autoconfigured addresses only) */
  117         struct nd_prefix *ia6_ndpr;
  118 
  119         /* multicast addresses joined from the kernel */
  120         LIST_HEAD(, in6_multi_mship) ia6_memberships;
  121 };
  122 
  123 /* control structure to manage address selection policy */
  124 struct in6_addrpolicy {
  125         struct sockaddr_in6 addr; /* prefix address */
  126         struct sockaddr_in6 addrmask; /* prefix mask */
  127         int preced;             /* precedence */
  128         int label;              /* matching label */
  129         u_quad_t use;           /* statistics */
  130 };
  131 
  132 /*
  133  * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
  134  */
  135 struct in6_ifstat {
  136         u_quad_t ifs6_in_receive;       /* # of total input datagram */
  137         u_quad_t ifs6_in_hdrerr;        /* # of datagrams with invalid hdr */
  138         u_quad_t ifs6_in_toobig;        /* # of datagrams exceeded MTU */
  139         u_quad_t ifs6_in_noroute;       /* # of datagrams with no route */
  140         u_quad_t ifs6_in_addrerr;       /* # of datagrams with invalid dst */
  141         u_quad_t ifs6_in_protounknown;  /* # of datagrams with unknown proto */
  142                                         /* NOTE: increment on final dst if */
  143         u_quad_t ifs6_in_truncated;     /* # of truncated datagrams */
  144         u_quad_t ifs6_in_discard;       /* # of discarded datagrams */
  145                                         /* NOTE: fragment timeout is not here */
  146         u_quad_t ifs6_in_deliver;       /* # of datagrams delivered to ULP */
  147                                         /* NOTE: increment on final dst if */
  148         u_quad_t ifs6_out_forward;      /* # of datagrams forwarded */
  149                                         /* NOTE: increment on outgoing if */
  150         u_quad_t ifs6_out_request;      /* # of outgoing datagrams from ULP */
  151                                         /* NOTE: does not include forwrads */
  152         u_quad_t ifs6_out_discard;      /* # of discarded datagrams */
  153         u_quad_t ifs6_out_fragok;       /* # of datagrams fragmented */
  154         u_quad_t ifs6_out_fragfail;     /* # of datagrams failed on fragment */
  155         u_quad_t ifs6_out_fragcreat;    /* # of fragment datagrams */
  156                                         /* NOTE: this is # after fragment */
  157         u_quad_t ifs6_reass_reqd;       /* # of incoming fragmented packets */
  158                                         /* NOTE: increment on final dst if */
  159         u_quad_t ifs6_reass_ok;         /* # of reassembled packets */
  160                                         /* NOTE: this is # after reass */
  161                                         /* NOTE: increment on final dst if */
  162         u_quad_t ifs6_reass_fail;       /* # of reass failures */
  163                                         /* NOTE: may not be packet count */
  164                                         /* NOTE: increment on final dst if */
  165         u_quad_t ifs6_in_mcast;         /* # of inbound multicast datagrams */
  166         u_quad_t ifs6_out_mcast;        /* # of outbound multicast datagrams */
  167 };
  168 
  169 /*
  170  * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
  171  * XXX: I'm not sure if this file is the right place for this structure...
  172  */
  173 struct icmp6_ifstat {
  174         /*
  175          * Input statistics
  176          */
  177         /* ipv6IfIcmpInMsgs, total # of input messages */
  178         u_quad_t ifs6_in_msg;
  179         /* ipv6IfIcmpInErrors, # of input error messages */
  180         u_quad_t ifs6_in_error;
  181         /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
  182         u_quad_t ifs6_in_dstunreach;
  183         /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
  184         u_quad_t ifs6_in_adminprohib;
  185         /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
  186         u_quad_t ifs6_in_timeexceed;
  187         /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
  188         u_quad_t ifs6_in_paramprob;
  189         /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
  190         u_quad_t ifs6_in_pkttoobig;
  191         /* ipv6IfIcmpInEchos, # of input echo requests */
  192         u_quad_t ifs6_in_echo;
  193         /* ipv6IfIcmpInEchoReplies, # of input echo replies */
  194         u_quad_t ifs6_in_echoreply;
  195         /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
  196         u_quad_t ifs6_in_routersolicit;
  197         /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
  198         u_quad_t ifs6_in_routeradvert;
  199         /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
  200         u_quad_t ifs6_in_neighborsolicit;
  201         /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
  202         u_quad_t ifs6_in_neighboradvert;
  203         /* ipv6IfIcmpInRedirects, # of input redirects */
  204         u_quad_t ifs6_in_redirect;
  205         /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
  206         u_quad_t ifs6_in_mldquery;
  207         /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
  208         u_quad_t ifs6_in_mldreport;
  209         /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
  210         u_quad_t ifs6_in_mlddone;
  211 
  212         /*
  213          * Output statistics. We should solve unresolved routing problem...
  214          */
  215         /* ipv6IfIcmpOutMsgs, total # of output messages */
  216         u_quad_t ifs6_out_msg;
  217         /* ipv6IfIcmpOutErrors, # of output error messages */
  218         u_quad_t ifs6_out_error;
  219         /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
  220         u_quad_t ifs6_out_dstunreach;
  221         /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
  222         u_quad_t ifs6_out_adminprohib;
  223         /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
  224         u_quad_t ifs6_out_timeexceed;
  225         /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
  226         u_quad_t ifs6_out_paramprob;
  227         /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
  228         u_quad_t ifs6_out_pkttoobig;
  229         /* ipv6IfIcmpOutEchos, # of output echo requests */
  230         u_quad_t ifs6_out_echo;
  231         /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
  232         u_quad_t ifs6_out_echoreply;
  233         /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
  234         u_quad_t ifs6_out_routersolicit;
  235         /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
  236         u_quad_t ifs6_out_routeradvert;
  237         /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
  238         u_quad_t ifs6_out_neighborsolicit;
  239         /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
  240         u_quad_t ifs6_out_neighboradvert;
  241         /* ipv6IfIcmpOutRedirects, # of output redirects */
  242         u_quad_t ifs6_out_redirect;
  243         /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
  244         u_quad_t ifs6_out_mldquery;
  245         /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
  246         u_quad_t ifs6_out_mldreport;
  247         /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
  248         u_quad_t ifs6_out_mlddone;
  249 };
  250 
  251 struct  in6_ifreq {
  252         char    ifr_name[IFNAMSIZ];
  253         union {
  254                 struct  sockaddr_in6 ifru_addr;
  255                 struct  sockaddr_in6 ifru_dstaddr;
  256                 int     ifru_flags;
  257                 int     ifru_flags6;
  258                 int     ifru_metric;
  259                 caddr_t ifru_data;
  260                 struct in6_addrlifetime ifru_lifetime;
  261                 struct in6_ifstat ifru_stat;
  262                 struct icmp6_ifstat ifru_icmp6stat;
  263                 u_int32_t ifru_scope_id[16];
  264         } ifr_ifru;
  265 };
  266 
  267 struct  in6_aliasreq {
  268         char    ifra_name[IFNAMSIZ];
  269         struct  sockaddr_in6 ifra_addr;
  270         struct  sockaddr_in6 ifra_dstaddr;
  271         struct  sockaddr_in6 ifra_prefixmask;
  272         int     ifra_flags;
  273         struct in6_addrlifetime ifra_lifetime;
  274 };
  275 
  276 /* prefix type macro */
  277 #define IN6_PREFIX_ND   1
  278 #define IN6_PREFIX_RR   2
  279 
  280 /*
  281  * prefix related flags passed between kernel(NDP related part) and
  282  * user land command(ifconfig) and daemon(rtadvd).
  283  */
  284 struct in6_prflags {
  285         struct prf_ra {
  286                 u_char onlink : 1;
  287                 u_char autonomous : 1;
  288                 u_char reserved : 6;
  289         } prf_ra;
  290         u_char prf_reserved1;
  291         u_short prf_reserved2;
  292         /* want to put this on 4byte offset */
  293         struct prf_rr {
  294                 u_char decrvalid : 1;
  295                 u_char decrprefd : 1;
  296                 u_char reserved : 6;
  297         } prf_rr;
  298         u_char prf_reserved3;
  299         u_short prf_reserved4;
  300 };
  301 
  302 struct  in6_prefixreq {
  303         char    ipr_name[IFNAMSIZ];
  304         u_char  ipr_origin;
  305         u_char  ipr_plen;
  306         u_int32_t ipr_vltime;
  307         u_int32_t ipr_pltime;
  308         struct in6_prflags ipr_flags;
  309         struct  sockaddr_in6 ipr_prefix;
  310 };
  311 
  312 #define PR_ORIG_RA      0
  313 #define PR_ORIG_RR      1
  314 #define PR_ORIG_STATIC  2
  315 #define PR_ORIG_KERNEL  3
  316 
  317 #define ipr_raf_onlink          ipr_flags.prf_ra.onlink
  318 #define ipr_raf_auto            ipr_flags.prf_ra.autonomous
  319 
  320 #define ipr_statef_onlink       ipr_flags.prf_state.onlink
  321 
  322 #define ipr_rrf_decrvalid       ipr_flags.prf_rr.decrvalid
  323 #define ipr_rrf_decrprefd       ipr_flags.prf_rr.decrprefd
  324 
  325 struct  in6_rrenumreq {
  326         char    irr_name[IFNAMSIZ];
  327         u_char  irr_origin;
  328         u_char  irr_m_len;      /* match len for matchprefix */
  329         u_char  irr_m_minlen;   /* minlen for matching prefix */
  330         u_char  irr_m_maxlen;   /* maxlen for matching prefix */
  331         u_char  irr_u_uselen;   /* uselen for adding prefix */
  332         u_char  irr_u_keeplen;  /* keeplen from matching prefix */
  333         struct irr_raflagmask {
  334                 u_char onlink : 1;
  335                 u_char autonomous : 1;
  336                 u_char reserved : 6;
  337         } irr_raflagmask;
  338         u_int32_t irr_vltime;
  339         u_int32_t irr_pltime;
  340         struct in6_prflags irr_flags;
  341         struct  sockaddr_in6 irr_matchprefix;
  342         struct  sockaddr_in6 irr_useprefix;
  343 };
  344 
  345 #define irr_raf_mask_onlink     irr_raflagmask.onlink
  346 #define irr_raf_mask_auto       irr_raflagmask.autonomous
  347 #define irr_raf_mask_reserved   irr_raflagmask.reserved
  348 
  349 #define irr_raf_onlink          irr_flags.prf_ra.onlink
  350 #define irr_raf_auto            irr_flags.prf_ra.autonomous
  351 
  352 #define irr_statef_onlink       irr_flags.prf_state.onlink
  353 
  354 #define irr_rrf                 irr_flags.prf_rr
  355 #define irr_rrf_decrvalid       irr_flags.prf_rr.decrvalid
  356 #define irr_rrf_decrprefd       irr_flags.prf_rr.decrprefd
  357 
  358 /*
  359  * Given a pointer to an in6_ifaddr (ifaddr),
  360  * return a pointer to the addr as a sockaddr_in6
  361  */
  362 #define IA6_IN6(ia)     (&((ia)->ia_addr.sin6_addr))
  363 #define IA6_DSTIN6(ia)  (&((ia)->ia_dstaddr.sin6_addr))
  364 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
  365 #define IA6_SIN6(ia)    (&((ia)->ia_addr))
  366 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
  367 #define IFA_IN6(x)      (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
  368 #define IFA_DSTIN6(x)   (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
  369 
  370 #define IFPR_IN6(x)     (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
  371 
  372 #ifdef _KERNEL
  373 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m)      (       \
  374         (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
  375         (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
  376         (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
  377         (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
  378 #endif
  379 
  380 #define SIOCSIFADDR_IN6          _IOW('i', 12, struct in6_ifreq)
  381 #define SIOCGIFADDR_IN6         _IOWR('i', 33, struct in6_ifreq)
  382 
  383 #ifdef _KERNEL
  384 /*
  385  * SIOCSxxx ioctls should be unused (see comments in in6.c), but
  386  * we do not shift numbers for binary compatibility.
  387  */
  388 #define SIOCSIFDSTADDR_IN6       _IOW('i', 14, struct in6_ifreq)
  389 #define SIOCSIFNETMASK_IN6       _IOW('i', 22, struct in6_ifreq)
  390 #endif
  391 
  392 #define SIOCGIFDSTADDR_IN6      _IOWR('i', 34, struct in6_ifreq)
  393 #define SIOCGIFNETMASK_IN6      _IOWR('i', 37, struct in6_ifreq)
  394 
  395 #define SIOCDIFADDR_IN6          _IOW('i', 25, struct in6_ifreq)
  396 #define SIOCAIFADDR_IN6          _IOW('i', 26, struct in6_aliasreq)
  397 
  398 #define SIOCSIFPHYADDR_IN6       _IOW('i', 70, struct in6_aliasreq)
  399 #define SIOCGIFPSRCADDR_IN6     _IOWR('i', 71, struct in6_ifreq)
  400 #define SIOCGIFPDSTADDR_IN6     _IOWR('i', 72, struct in6_ifreq)
  401 
  402 #define SIOCGIFAFLAG_IN6        _IOWR('i', 73, struct in6_ifreq)
  403 
  404 #define SIOCGDRLST_IN6          _IOWR('i', 74, struct in6_drlist)
  405 #ifdef _KERNEL
  406 /* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */
  407 #define SIOCGPRLST_IN6          _IOWR('i', 75, struct in6_oprlist)
  408 #endif
  409 #ifdef _KERNEL
  410 #define OSIOCGIFINFO_IN6        _IOWR('i', 76, struct in6_ondireq)
  411 #endif
  412 #define SIOCGIFINFO_IN6         _IOWR('i', 108, struct in6_ndireq)
  413 #define SIOCSIFINFO_IN6         _IOWR('i', 109, struct in6_ndireq)
  414 #define SIOCSNDFLUSH_IN6        _IOWR('i', 77, struct in6_ifreq)
  415 #define SIOCGNBRINFO_IN6        _IOWR('i', 78, struct in6_nbrinfo)
  416 #define SIOCSPFXFLUSH_IN6       _IOWR('i', 79, struct in6_ifreq)
  417 #define SIOCSRTRFLUSH_IN6       _IOWR('i', 80, struct in6_ifreq)
  418 
  419 #define SIOCGIFALIFETIME_IN6    _IOWR('i', 81, struct in6_ifreq)
  420 #define SIOCSIFALIFETIME_IN6    _IOWR('i', 82, struct in6_ifreq)
  421 #define SIOCGIFSTAT_IN6         _IOWR('i', 83, struct in6_ifreq)
  422 #define SIOCGIFSTAT_ICMP6       _IOWR('i', 84, struct in6_ifreq)
  423 
  424 #define SIOCSDEFIFACE_IN6       _IOWR('i', 85, struct in6_ndifreq)
  425 #define SIOCGDEFIFACE_IN6       _IOWR('i', 86, struct in6_ndifreq)
  426 
  427 #define SIOCSIFINFO_FLAGS       _IOWR('i', 87, struct in6_ndireq) /* XXX */
  428 
  429 #define SIOCSSCOPE6             _IOW('i', 88, struct in6_ifreq)
  430 #define SIOCGSCOPE6             _IOWR('i', 89, struct in6_ifreq)
  431 #define SIOCGSCOPE6DEF          _IOWR('i', 90, struct in6_ifreq)
  432 
  433 #define SIOCSIFPREFIX_IN6       _IOW('i', 100, struct in6_prefixreq) /* set */
  434 #define SIOCGIFPREFIX_IN6       _IOWR('i', 101, struct in6_prefixreq) /* get */
  435 #define SIOCDIFPREFIX_IN6       _IOW('i', 102, struct in6_prefixreq) /* del */
  436 #define SIOCAIFPREFIX_IN6       _IOW('i', 103, struct in6_rrenumreq) /* add */
  437 #define SIOCCIFPREFIX_IN6       _IOW('i', 104, \
  438                                      struct in6_rrenumreq) /* change */
  439 #define SIOCSGIFPREFIX_IN6      _IOW('i', 105, \
  440                                      struct in6_rrenumreq) /* set global */
  441 
  442 #define SIOCGETSGCNT_IN6        _IOWR('u', 106, \
  443                                       struct sioc_sg_req6) /* get s,g pkt cnt */
  444 #define SIOCGETMIFCNT_IN6       _IOWR('u', 107, \
  445                                       struct sioc_mif_req6) /* get pkt cnt per if */
  446 
  447 #define SIOCAADDRCTL_POLICY     _IOW('u', 108, struct in6_addrpolicy)
  448 #define SIOCDADDRCTL_POLICY     _IOW('u', 109, struct in6_addrpolicy)
  449 
  450 #define IN6_IFF_ANYCAST         0x01    /* anycast address */
  451 #define IN6_IFF_TENTATIVE       0x02    /* tentative address */
  452 #define IN6_IFF_DUPLICATED      0x04    /* DAD detected duplicate */
  453 #define IN6_IFF_DETACHED        0x08    /* may be detached from the link */
  454 #define IN6_IFF_DEPRECATED      0x10    /* deprecated address */
  455 #define IN6_IFF_NODAD           0x20    /* don't perform DAD on this address
  456                                          * (used only at first SIOC* call)
  457                                          */
  458 #define IN6_IFF_AUTOCONF        0x40    /* autoconfigurable address. */
  459 #define IN6_IFF_TEMPORARY       0x80    /* temporary (anonymous) address. */
  460 #define IN6_IFF_NOPFX           0x8000  /* skip kernel prefix management.
  461                                          * XXX: this should be temporary.
  462                                          */
  463 
  464 /* do not input/output */
  465 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
  466 
  467 #ifdef _KERNEL
  468 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
  469 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
  470 #endif
  471 
  472 #ifdef _KERNEL
  473 extern struct in6_ifaddr *in6_ifaddr;
  474 
  475 extern struct icmp6stat icmp6stat;
  476 #define in6_ifstat_inc(ifp, tag) \
  477 do {                                                            \
  478         if (ifp)                                                \
  479                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \
  480 } while (/*CONSTCOND*/ 0)
  481 
  482 extern struct in6_addr zeroin6_addr;
  483 extern u_char inet6ctlerrmap[];
  484 extern unsigned long in6_maxmtu;
  485 #ifdef MALLOC_DECLARE
  486 MALLOC_DECLARE(M_IP6MADDR);
  487 #endif /* MALLOC_DECLARE */
  488 
  489 /*
  490  * Macro for finding the internet address structure (in6_ifaddr) corresponding
  491  * to a given interface (ifnet structure).
  492  */
  493 
  494 #define IFP_TO_IA6(ifp, ia)                             \
  495 /* struct ifnet *ifp; */                                \
  496 /* struct in6_ifaddr *ia; */                            \
  497 do {                                                                    \
  498         struct ifaddr *ifa;                                             \
  499         TAILQ_FOREACH(ifa, &(ifp)->if_addrlist, ifa_list) {             \
  500                 if (ifa->ifa_addr->sa_family == AF_INET6)               \
  501                         break;                                          \
  502         }                                                               \
  503         (ia) = (struct in6_ifaddr *)ifa;                                \
  504 } while (/*CONSTCOND*/ 0)
  505 
  506 #endif /* _KERNEL */
  507 
  508 /*
  509  * Multi-cast membership entry.  One for each group/ifp that a PCB
  510  * belongs to.
  511  */
  512 struct in6_multi_mship {
  513         struct  in6_multi *i6mm_maddr;  /* Multicast address pointer */
  514         LIST_ENTRY(in6_multi_mship) i6mm_chain;  /* multicast options chain */
  515 };
  516 
  517 struct  in6_multi {
  518         LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
  519         struct  in6_addr in6m_addr;     /* IP6 multicast address */
  520         struct  ifnet *in6m_ifp;        /* back pointer to ifnet */
  521         struct  ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */
  522         u_int   in6m_refcount;          /* # membership claims by sockets */
  523         u_int   in6m_state;             /* state of the membership */
  524         u_int   in6m_timer;             /* MLD6 listener report timer */
  525         struct timeval in6m_timer_expire; /* when the timer expires */
  526         struct callout *in6m_timer_ch;
  527 };
  528 
  529 #define IN6M_TIMER_UNDEF -1
  530 
  531 #ifdef _KERNEL
  532 /* flags to in6_update_ifa */
  533 #define IN6_IFAUPDATE_DADDELAY  0x1 /* first time to configure an address */
  534 
  535 extern LIST_HEAD(in6_multihead, in6_multi) in6_multihead;
  536 
  537 /*
  538  * Structure used by macros below to remember position when stepping through
  539  * all of the in6_multi records.
  540  */
  541 struct  in6_multistep {
  542         struct  in6_ifaddr *i_ia;
  543         struct  in6_multi *i_in6m;
  544 };
  545 
  546 /*
  547  * Macros for looking up the in6_multi record for a given IP6 multicast
  548  * address on a given interface. If no matching record is found, "in6m"
  549  * returns NULL.
  550  */
  551 
  552 #define IN6_LOOKUP_MULTI(addr, ifp, in6m)                       \
  553 /* struct in6_addr addr; */                                     \
  554 /* struct ifnet *ifp; */                                        \
  555 /* struct in6_multi *in6m; */                                   \
  556 do { \
  557         struct ifmultiaddr *ifma; \
  558         IF_ADDR_LOCK(ifp); \
  559         TAILQ_FOREACH(ifma, &(ifp)->if_multiaddrs, ifma_link) { \
  560                 if (ifma->ifma_addr->sa_family == AF_INET6 \
  561                     && IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)ifma->ifma_addr)->sin6_addr, \
  562                                           &(addr))) \
  563                         break; \
  564         } \
  565         (in6m) = (struct in6_multi *)(ifma ? ifma->ifma_protospec : 0); \
  566         IF_ADDR_UNLOCK(ifp); \
  567 } while(0)
  568 
  569 /*
  570  * Macro to step through all of the in6_multi records, one at a time.
  571  * The current position is remembered in "step", which the caller must
  572  * provide.  IN6_FIRST_MULTI(), below, must be called to initialize "step"
  573  * and get the first record.  Both macros return a NULL "in6m" when there
  574  * are no remaining records.
  575  */
  576 #define IN6_NEXT_MULTI(step, in6m)                                      \
  577 /* struct in6_multistep step; */                                        \
  578 /* struct in6_multi *in6m; */                                           \
  579 do { \
  580         if (((in6m) = (step).i_in6m) != NULL) \
  581                 (step).i_in6m = LIST_NEXT((step).i_in6m, in6m_entry); \
  582 } while(0)
  583 
  584 #define IN6_FIRST_MULTI(step, in6m)             \
  585 /* struct in6_multistep step; */                \
  586 /* struct in6_multi *in6m */                    \
  587 do { \
  588         (step).i_in6m = LIST_FIRST(&in6_multihead); \
  589                 IN6_NEXT_MULTI((step), (in6m)); \
  590 } while(0)
  591 
  592 struct  in6_multi *in6_addmulti __P((struct in6_addr *, struct ifnet *,
  593         int *, int));
  594 void    in6_delmulti __P((struct in6_multi *));
  595 struct in6_multi_mship *in6_joingroup(struct ifnet *, struct in6_addr *, int *, int);
  596 int     in6_leavegroup(struct in6_multi_mship *);
  597 int     in6_mask2len __P((struct in6_addr *, u_char *));
  598 int     in6_control __P((struct socket *, u_long, caddr_t, struct ifnet *,
  599         struct thread *));
  600 int     in6_update_ifa __P((struct ifnet *, struct in6_aliasreq *,
  601         struct in6_ifaddr *, int));
  602 void    in6_purgeaddr __P((struct ifaddr *));
  603 int     in6if_do_dad __P((struct ifnet *));
  604 void    in6_purgeif __P((struct ifnet *));
  605 void    in6_savemkludge __P((struct in6_ifaddr *));
  606 void    *in6_domifattach __P((struct ifnet *));
  607 void    in6_domifdetach __P((struct ifnet *, void *));
  608 void    in6_setmaxmtu   __P((void));
  609 int     in6_if2idlen   __P((struct ifnet *));
  610 void    in6_restoremkludge __P((struct in6_ifaddr *, struct ifnet *));
  611 void    in6_purgemkludge __P((struct ifnet *));
  612 struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *, int));
  613 struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *, struct in6_addr *));
  614 char    *ip6_sprintf __P((char *, const struct in6_addr *));
  615 int     in6_addr2zoneid __P((struct ifnet *, struct in6_addr *, u_int32_t *));
  616 int     in6_matchlen __P((struct in6_addr *, struct in6_addr *));
  617 int     in6_are_prefix_equal __P((struct in6_addr *, struct in6_addr *, int));
  618 void    in6_prefixlen2mask __P((struct in6_addr *, int));
  619 int     in6_prefix_ioctl __P((struct socket *, u_long, caddr_t,
  620         struct ifnet *));
  621 int     in6_prefix_add_ifid __P((int, struct in6_ifaddr *));
  622 void    in6_prefix_remove_ifid __P((int, struct in6_ifaddr *));
  623 void    in6_purgeprefix __P((struct ifnet *));
  624 void    in6_ifremloop(struct ifaddr *);
  625 void    in6_ifaddloop(struct ifaddr *);
  626 
  627 int     in6_is_addr_deprecated __P((struct sockaddr_in6 *));
  628 struct inpcb;
  629 int in6_src_ioctl __P((u_long, caddr_t));
  630 #endif /* _KERNEL */
  631 
  632 #endif /* _NETINET6_IN6_VAR_H_ */

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