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 /*      $FreeBSD$       */
    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         /* multicast addresses joined from the kernel */
  117         LIST_HEAD(, in6_multi_mship) ia6_memberships;
  118 };
  119 
  120 /* control structure to manage address selection policy */
  121 struct in6_addrpolicy {
  122         struct sockaddr_in6 addr; /* prefix address */
  123         struct sockaddr_in6 addrmask; /* prefix mask */
  124         int preced;             /* precedence */
  125         int label;              /* matching label */
  126         u_quad_t use;           /* statistics */
  127 };
  128 
  129 /*
  130  * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
  131  */
  132 struct in6_ifstat {
  133         u_quad_t ifs6_in_receive;       /* # of total input datagram */
  134         u_quad_t ifs6_in_hdrerr;        /* # of datagrams with invalid hdr */
  135         u_quad_t ifs6_in_toobig;        /* # of datagrams exceeded MTU */
  136         u_quad_t ifs6_in_noroute;       /* # of datagrams with no route */
  137         u_quad_t ifs6_in_addrerr;       /* # of datagrams with invalid dst */
  138         u_quad_t ifs6_in_protounknown;  /* # of datagrams with unknown proto */
  139                                         /* NOTE: increment on final dst if */
  140         u_quad_t ifs6_in_truncated;     /* # of truncated datagrams */
  141         u_quad_t ifs6_in_discard;       /* # of discarded datagrams */
  142                                         /* NOTE: fragment timeout is not here */
  143         u_quad_t ifs6_in_deliver;       /* # of datagrams delivered to ULP */
  144                                         /* NOTE: increment on final dst if */
  145         u_quad_t ifs6_out_forward;      /* # of datagrams forwarded */
  146                                         /* NOTE: increment on outgoing if */
  147         u_quad_t ifs6_out_request;      /* # of outgoing datagrams from ULP */
  148                                         /* NOTE: does not include forwrads */
  149         u_quad_t ifs6_out_discard;      /* # of discarded datagrams */
  150         u_quad_t ifs6_out_fragok;       /* # of datagrams fragmented */
  151         u_quad_t ifs6_out_fragfail;     /* # of datagrams failed on fragment */
  152         u_quad_t ifs6_out_fragcreat;    /* # of fragment datagrams */
  153                                         /* NOTE: this is # after fragment */
  154         u_quad_t ifs6_reass_reqd;       /* # of incoming fragmented packets */
  155                                         /* NOTE: increment on final dst if */
  156         u_quad_t ifs6_reass_ok;         /* # of reassembled packets */
  157                                         /* NOTE: this is # after reass */
  158                                         /* NOTE: increment on final dst if */
  159         u_quad_t ifs6_reass_fail;       /* # of reass failures */
  160                                         /* NOTE: may not be packet count */
  161                                         /* NOTE: increment on final dst if */
  162         u_quad_t ifs6_in_mcast;         /* # of inbound multicast datagrams */
  163         u_quad_t ifs6_out_mcast;        /* # of outbound multicast datagrams */
  164 };
  165 
  166 /*
  167  * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
  168  * XXX: I'm not sure if this file is the right place for this structure...
  169  */
  170 struct icmp6_ifstat {
  171         /*
  172          * Input statistics
  173          */
  174         /* ipv6IfIcmpInMsgs, total # of input messages */
  175         u_quad_t ifs6_in_msg;
  176         /* ipv6IfIcmpInErrors, # of input error messages */
  177         u_quad_t ifs6_in_error;
  178         /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
  179         u_quad_t ifs6_in_dstunreach;
  180         /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
  181         u_quad_t ifs6_in_adminprohib;
  182         /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
  183         u_quad_t ifs6_in_timeexceed;
  184         /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
  185         u_quad_t ifs6_in_paramprob;
  186         /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
  187         u_quad_t ifs6_in_pkttoobig;
  188         /* ipv6IfIcmpInEchos, # of input echo requests */
  189         u_quad_t ifs6_in_echo;
  190         /* ipv6IfIcmpInEchoReplies, # of input echo replies */
  191         u_quad_t ifs6_in_echoreply;
  192         /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
  193         u_quad_t ifs6_in_routersolicit;
  194         /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
  195         u_quad_t ifs6_in_routeradvert;
  196         /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
  197         u_quad_t ifs6_in_neighborsolicit;
  198         /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
  199         u_quad_t ifs6_in_neighboradvert;
  200         /* ipv6IfIcmpInRedirects, # of input redirects */
  201         u_quad_t ifs6_in_redirect;
  202         /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
  203         u_quad_t ifs6_in_mldquery;
  204         /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
  205         u_quad_t ifs6_in_mldreport;
  206         /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
  207         u_quad_t ifs6_in_mlddone;
  208 
  209         /*
  210          * Output statistics. We should solve unresolved routing problem...
  211          */
  212         /* ipv6IfIcmpOutMsgs, total # of output messages */
  213         u_quad_t ifs6_out_msg;
  214         /* ipv6IfIcmpOutErrors, # of output error messages */
  215         u_quad_t ifs6_out_error;
  216         /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
  217         u_quad_t ifs6_out_dstunreach;
  218         /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
  219         u_quad_t ifs6_out_adminprohib;
  220         /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
  221         u_quad_t ifs6_out_timeexceed;
  222         /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
  223         u_quad_t ifs6_out_paramprob;
  224         /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
  225         u_quad_t ifs6_out_pkttoobig;
  226         /* ipv6IfIcmpOutEchos, # of output echo requests */
  227         u_quad_t ifs6_out_echo;
  228         /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
  229         u_quad_t ifs6_out_echoreply;
  230         /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
  231         u_quad_t ifs6_out_routersolicit;
  232         /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
  233         u_quad_t ifs6_out_routeradvert;
  234         /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
  235         u_quad_t ifs6_out_neighborsolicit;
  236         /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
  237         u_quad_t ifs6_out_neighboradvert;
  238         /* ipv6IfIcmpOutRedirects, # of output redirects */
  239         u_quad_t ifs6_out_redirect;
  240         /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
  241         u_quad_t ifs6_out_mldquery;
  242         /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
  243         u_quad_t ifs6_out_mldreport;
  244         /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
  245         u_quad_t ifs6_out_mlddone;
  246 };
  247 
  248 struct  in6_ifreq {
  249         char    ifr_name[IFNAMSIZ];
  250         union {
  251                 struct  sockaddr_in6 ifru_addr;
  252                 struct  sockaddr_in6 ifru_dstaddr;
  253                 int     ifru_flags;
  254                 int     ifru_flags6;
  255                 int     ifru_metric;
  256                 caddr_t ifru_data;
  257                 struct in6_addrlifetime ifru_lifetime;
  258                 struct in6_ifstat ifru_stat;
  259                 struct icmp6_ifstat ifru_icmp6stat;
  260                 u_int32_t ifru_scope_id[16];
  261         } ifr_ifru;
  262 };
  263 
  264 struct  in6_aliasreq {
  265         char    ifra_name[IFNAMSIZ];
  266         struct  sockaddr_in6 ifra_addr;
  267         struct  sockaddr_in6 ifra_dstaddr;
  268         struct  sockaddr_in6 ifra_prefixmask;
  269         int     ifra_flags;
  270         struct in6_addrlifetime ifra_lifetime;
  271 };
  272 
  273 /* prefix type macro */
  274 #define IN6_PREFIX_ND   1
  275 #define IN6_PREFIX_RR   2
  276 
  277 /*
  278  * prefix related flags passed between kernel(NDP related part) and
  279  * user land command(ifconfig) and daemon(rtadvd).
  280  */
  281 struct in6_prflags {
  282         struct prf_ra {
  283                 u_char onlink : 1;
  284                 u_char autonomous : 1;
  285                 u_char reserved : 6;
  286         } prf_ra;
  287         u_char prf_reserved1;
  288         u_short prf_reserved2;
  289         /* want to put this on 4byte offset */
  290         struct prf_rr {
  291                 u_char decrvalid : 1;
  292                 u_char decrprefd : 1;
  293                 u_char reserved : 6;
  294         } prf_rr;
  295         u_char prf_reserved3;
  296         u_short prf_reserved4;
  297 };
  298 
  299 struct  in6_prefixreq {
  300         char    ipr_name[IFNAMSIZ];
  301         u_char  ipr_origin;
  302         u_char  ipr_plen;
  303         u_int32_t ipr_vltime;
  304         u_int32_t ipr_pltime;
  305         struct in6_prflags ipr_flags;
  306         struct  sockaddr_in6 ipr_prefix;
  307 };
  308 
  309 #define PR_ORIG_RA      0
  310 #define PR_ORIG_RR      1
  311 #define PR_ORIG_STATIC  2
  312 #define PR_ORIG_KERNEL  3
  313 
  314 #define ipr_raf_onlink          ipr_flags.prf_ra.onlink
  315 #define ipr_raf_auto            ipr_flags.prf_ra.autonomous
  316 
  317 #define ipr_statef_onlink       ipr_flags.prf_state.onlink
  318 
  319 #define ipr_rrf_decrvalid       ipr_flags.prf_rr.decrvalid
  320 #define ipr_rrf_decrprefd       ipr_flags.prf_rr.decrprefd
  321 
  322 struct  in6_rrenumreq {
  323         char    irr_name[IFNAMSIZ];
  324         u_char  irr_origin;
  325         u_char  irr_m_len;      /* match len for matchprefix */
  326         u_char  irr_m_minlen;   /* minlen for matching prefix */
  327         u_char  irr_m_maxlen;   /* maxlen for matching prefix */
  328         u_char  irr_u_uselen;   /* uselen for adding prefix */
  329         u_char  irr_u_keeplen;  /* keeplen from matching prefix */
  330         struct irr_raflagmask {
  331                 u_char onlink : 1;
  332                 u_char autonomous : 1;
  333                 u_char reserved : 6;
  334         } irr_raflagmask;
  335         u_int32_t irr_vltime;
  336         u_int32_t irr_pltime;
  337         struct in6_prflags irr_flags;
  338         struct  sockaddr_in6 irr_matchprefix;
  339         struct  sockaddr_in6 irr_useprefix;
  340 };
  341 
  342 #define irr_raf_mask_onlink     irr_raflagmask.onlink
  343 #define irr_raf_mask_auto       irr_raflagmask.autonomous
  344 #define irr_raf_mask_reserved   irr_raflagmask.reserved
  345 
  346 #define irr_raf_onlink          irr_flags.prf_ra.onlink
  347 #define irr_raf_auto            irr_flags.prf_ra.autonomous
  348 
  349 #define irr_statef_onlink       irr_flags.prf_state.onlink
  350 
  351 #define irr_rrf                 irr_flags.prf_rr
  352 #define irr_rrf_decrvalid       irr_flags.prf_rr.decrvalid
  353 #define irr_rrf_decrprefd       irr_flags.prf_rr.decrprefd
  354 
  355 /*
  356  * Given a pointer to an in6_ifaddr (ifaddr),
  357  * return a pointer to the addr as a sockaddr_in6
  358  */
  359 #define IA6_IN6(ia)     (&((ia)->ia_addr.sin6_addr))
  360 #define IA6_DSTIN6(ia)  (&((ia)->ia_dstaddr.sin6_addr))
  361 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
  362 #define IA6_SIN6(ia)    (&((ia)->ia_addr))
  363 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
  364 #define IFA_IN6(x)      (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
  365 #define IFA_DSTIN6(x)   (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
  366 
  367 #define IFPR_IN6(x)     (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
  368 
  369 #ifdef _KERNEL
  370 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m)      (       \
  371         (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
  372         (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
  373         (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
  374         (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
  375 #endif
  376 
  377 #define SIOCSIFADDR_IN6          _IOW('i', 12, struct in6_ifreq)
  378 #define SIOCGIFADDR_IN6         _IOWR('i', 33, struct in6_ifreq)
  379 
  380 #ifdef _KERNEL
  381 /*
  382  * SIOCSxxx ioctls should be unused (see comments in in6.c), but
  383  * we do not shift numbers for binary compatibility.
  384  */
  385 #define SIOCSIFDSTADDR_IN6       _IOW('i', 14, struct in6_ifreq)
  386 #define SIOCSIFNETMASK_IN6       _IOW('i', 22, struct in6_ifreq)
  387 #endif
  388 
  389 #define SIOCGIFDSTADDR_IN6      _IOWR('i', 34, struct in6_ifreq)
  390 #define SIOCGIFNETMASK_IN6      _IOWR('i', 37, struct in6_ifreq)
  391 
  392 #define SIOCDIFADDR_IN6          _IOW('i', 25, struct in6_ifreq)
  393 #define SIOCAIFADDR_IN6          _IOW('i', 26, struct in6_aliasreq)
  394 
  395 #define SIOCSIFPHYADDR_IN6       _IOW('i', 70, struct in6_aliasreq)
  396 #define SIOCGIFPSRCADDR_IN6     _IOWR('i', 71, struct in6_ifreq)
  397 #define SIOCGIFPDSTADDR_IN6     _IOWR('i', 72, struct in6_ifreq)
  398 
  399 #define SIOCGIFAFLAG_IN6        _IOWR('i', 73, struct in6_ifreq)
  400 
  401 #define SIOCGDRLST_IN6          _IOWR('i', 74, struct in6_drlist)
  402 #ifdef _KERNEL
  403 /* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */
  404 #define SIOCGPRLST_IN6          _IOWR('i', 75, struct in6_oprlist)
  405 #endif
  406 #ifdef _KERNEL
  407 #define OSIOCGIFINFO_IN6        _IOWR('i', 76, struct in6_ondireq)
  408 #endif
  409 #define SIOCGIFINFO_IN6         _IOWR('i', 108, struct in6_ndireq)
  410 #define SIOCSNDFLUSH_IN6        _IOWR('i', 77, struct in6_ifreq)
  411 #define SIOCGNBRINFO_IN6        _IOWR('i', 78, struct in6_nbrinfo)
  412 #define SIOCSPFXFLUSH_IN6       _IOWR('i', 79, struct in6_ifreq)
  413 #define SIOCSRTRFLUSH_IN6       _IOWR('i', 80, struct in6_ifreq)
  414 
  415 #define SIOCGIFALIFETIME_IN6    _IOWR('i', 81, struct in6_ifreq)
  416 #define SIOCSIFALIFETIME_IN6    _IOWR('i', 82, struct in6_ifreq)
  417 #define SIOCGIFSTAT_IN6         _IOWR('i', 83, struct in6_ifreq)
  418 #define SIOCGIFSTAT_ICMP6       _IOWR('i', 84, struct in6_ifreq)
  419 
  420 #define SIOCSDEFIFACE_IN6       _IOWR('i', 85, struct in6_ndifreq)
  421 #define SIOCGDEFIFACE_IN6       _IOWR('i', 86, struct in6_ndifreq)
  422 
  423 #define SIOCSIFINFO_FLAGS       _IOWR('i', 87, struct in6_ndireq) /* XXX */
  424 
  425 #define SIOCSSCOPE6             _IOW('i', 88, struct in6_ifreq)
  426 #define SIOCGSCOPE6             _IOWR('i', 89, struct in6_ifreq)
  427 #define SIOCGSCOPE6DEF          _IOWR('i', 90, struct in6_ifreq)
  428 
  429 #define SIOCSIFPREFIX_IN6       _IOW('i', 100, struct in6_prefixreq) /* set */
  430 #define SIOCGIFPREFIX_IN6       _IOWR('i', 101, struct in6_prefixreq) /* get */
  431 #define SIOCDIFPREFIX_IN6       _IOW('i', 102, struct in6_prefixreq) /* del */
  432 #define SIOCAIFPREFIX_IN6       _IOW('i', 103, struct in6_rrenumreq) /* add */
  433 #define SIOCCIFPREFIX_IN6       _IOW('i', 104, \
  434                                      struct in6_rrenumreq) /* change */
  435 #define SIOCSGIFPREFIX_IN6      _IOW('i', 105, \
  436                                      struct in6_rrenumreq) /* set global */
  437 
  438 #define SIOCGETSGCNT_IN6        _IOWR('u', 106, \
  439                                       struct sioc_sg_req6) /* get s,g pkt cnt */
  440 #define SIOCGETMIFCNT_IN6       _IOWR('u', 107, \
  441                                       struct sioc_mif_req6) /* get pkt cnt per if */
  442 
  443 #define SIOCAADDRCTL_POLICY     _IOW('u', 108, struct in6_addrpolicy)
  444 #define SIOCDADDRCTL_POLICY     _IOW('u', 109, struct in6_addrpolicy)
  445 
  446 #define IN6_IFF_ANYCAST         0x01    /* anycast address */
  447 #define IN6_IFF_TENTATIVE       0x02    /* tentative address */
  448 #define IN6_IFF_DUPLICATED      0x04    /* DAD detected duplicate */
  449 #define IN6_IFF_DETACHED        0x08    /* may be detached from the link */
  450 #define IN6_IFF_DEPRECATED      0x10    /* deprecated address */
  451 #define IN6_IFF_NODAD           0x20    /* don't perform DAD on this address
  452                                          * (used only at first SIOC* call)
  453                                          */
  454 #define IN6_IFF_AUTOCONF        0x40    /* autoconfigurable address. */
  455 #define IN6_IFF_TEMPORARY       0x80    /* temporary (anonymous) address. */
  456 #define IN6_IFF_NOPFX           0x8000  /* skip kernel prefix management.
  457                                          * XXX: this should be temporary.
  458                                          */
  459 
  460 /* do not input/output */
  461 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
  462 
  463 #ifdef _KERNEL
  464 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
  465 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
  466 #endif
  467 
  468 #ifdef _KERNEL
  469 extern struct in6_ifaddr *in6_ifaddr;
  470 
  471 extern struct icmp6stat icmp6stat;
  472 #define in6_ifstat_inc(ifp, tag) \
  473 do {                                                            \
  474         if (ifp)                                                \
  475                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \
  476 } while (/*CONSTCOND*/ 0)
  477 
  478 extern struct in6_addr zeroin6_addr;
  479 extern u_char inet6ctlerrmap[];
  480 extern unsigned long in6_maxmtu;
  481 #ifdef MALLOC_DECLARE
  482 MALLOC_DECLARE(M_IPMADDR);
  483 #endif /* MALLOC_DECLARE */
  484 
  485 /*
  486  * Macro for finding the internet address structure (in6_ifaddr) corresponding
  487  * to a given interface (ifnet structure).
  488  */
  489 
  490 #define IFP_TO_IA6(ifp, ia)                             \
  491 /* struct ifnet *ifp; */                                \
  492 /* struct in6_ifaddr *ia; */                            \
  493 do {                                                                    \
  494         struct ifaddr *ifa;                                             \
  495         for (ifa = (ifp)->if_addrlist.tqh_first; ifa; ifa = ifa->ifa_list.tqe_next) {   \
  496                 if (!ifa->ifa_addr)                                     \
  497                         continue;                                       \
  498                 if (ifa->ifa_addr->sa_family == AF_INET6)               \
  499                         break;                                          \
  500         }                                                               \
  501         (ia) = (struct in6_ifaddr *)ifa;                                \
  502 } while (/*CONSTCOND*/ 0)
  503 
  504 #endif /* _KERNEL */
  505 
  506 /*
  507  * Multi-cast membership entry.  One for each group/ifp that a PCB
  508  * belongs to.
  509  */
  510 struct in6_multi_mship {
  511         struct  in6_multi *i6mm_maddr;  /* Multicast address pointer */
  512         LIST_ENTRY(in6_multi_mship) i6mm_chain;  /* multicast options chain */
  513 };
  514 
  515 struct  in6_multi {
  516         LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
  517         struct  in6_addr in6m_addr;     /* IP6 multicast address */
  518         struct  ifnet *in6m_ifp;        /* back pointer to ifnet */
  519         struct  ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */
  520         u_int   in6m_refcount;          /* # membership claims by sockets */
  521         u_int   in6m_state;             /* state of the membership */
  522         u_int   in6m_timer;             /* MLD6 listener report timer */
  523 };
  524 
  525 #ifdef _KERNEL
  526 extern LIST_HEAD(in6_multihead, in6_multi) in6_multihead;
  527 
  528 /*
  529  * Structure used by macros below to remember position when stepping through
  530  * all of the in6_multi records.
  531  */
  532 struct  in6_multistep {
  533         struct  in6_ifaddr *i_ia;
  534         struct  in6_multi *i_in6m;
  535 };
  536 
  537 /*
  538  * Macros for looking up the in6_multi record for a given IP6 multicast
  539  * address on a given interface. If no matching record is found, "in6m"
  540  * returns NLL.
  541  */
  542 
  543 #define IN6_LOOKUP_MULTI(addr, ifp, in6m)                       \
  544 /* struct in6_addr addr; */                                     \
  545 /* struct ifnet *ifp; */                                        \
  546 /* struct in6_multi *in6m; */                                   \
  547 do { \
  548         struct ifmultiaddr *ifma; \
  549         IF_ADDR_LOCK(ifp); \
  550         TAILQ_FOREACH(ifma, &(ifp)->if_multiaddrs, ifma_link) { \
  551                 if (ifma->ifma_addr->sa_family == AF_INET6 \
  552                     && IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)ifma->ifma_addr)->sin6_addr, \
  553                                           &(addr))) \
  554                         break; \
  555         } \
  556         (in6m) = (struct in6_multi *)(ifma ? ifma->ifma_protospec : 0); \
  557         IF_ADDR_UNLOCK(ifp); \
  558 } while(0)
  559 
  560 /*
  561  * Macro to step through all of the in6_multi records, one at a time.
  562  * The current position is remembered in "step", which the caller must
  563  * provide.  IN6_FIRST_MULTI(), below, must be called to initialize "step"
  564  * and get the first record.  Both macros return a NULL "in6m" when there
  565  * are no remaining records.
  566  */
  567 #define IN6_NEXT_MULTI(step, in6m)                                      \
  568 /* struct in6_multistep step; */                                        \
  569 /* struct in6_multi *in6m; */                                           \
  570 do { \
  571         if (((in6m) = (step).i_in6m) != NULL) \
  572                 (step).i_in6m = (step).i_in6m->in6m_entry.le_next; \
  573 } while(0)
  574 
  575 #define IN6_FIRST_MULTI(step, in6m)             \
  576 /* struct in6_multistep step; */                \
  577 /* struct in6_multi *in6m */                    \
  578 do { \
  579         (step).i_in6m = in6_multihead.lh_first; \
  580                 IN6_NEXT_MULTI((step), (in6m)); \
  581 } while(0)
  582 
  583 struct  in6_multi *in6_addmulti __P((struct in6_addr *, struct ifnet *,
  584         int *));
  585 void    in6_delmulti __P((struct in6_multi *));
  586 struct in6_multi_mship *in6_joingroup(struct ifnet *, struct in6_addr *, int *);
  587 int     in6_leavegroup(struct in6_multi_mship *);
  588 int     in6_mask2len __P((struct in6_addr *, u_char *));
  589 int     in6_control __P((struct socket *, u_long, caddr_t, struct ifnet *,
  590         struct thread *));
  591 int     in6_update_ifa __P((struct ifnet *, struct in6_aliasreq *,
  592         struct in6_ifaddr *));
  593 void    in6_purgeaddr __P((struct ifaddr *));
  594 int     in6if_do_dad __P((struct ifnet *));
  595 void    in6_purgeif __P((struct ifnet *));
  596 void    in6_savemkludge __P((struct in6_ifaddr *));
  597 void    *in6_domifattach __P((struct ifnet *));
  598 void    in6_domifdetach __P((struct ifnet *, void *));
  599 void    in6_setmaxmtu   __P((void));
  600 void    in6_restoremkludge __P((struct in6_ifaddr *, struct ifnet *));
  601 void    in6_purgemkludge __P((struct ifnet *));
  602 struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *, int));
  603 struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *, struct in6_addr *));
  604 char    *ip6_sprintf __P((const struct in6_addr *));
  605 int     in6_addr2zoneid __P((struct ifnet *, struct in6_addr *, u_int32_t *));
  606 int     in6_matchlen __P((struct in6_addr *, struct in6_addr *));
  607 int     in6_are_prefix_equal __P((struct in6_addr *, struct in6_addr *, int));
  608 void    in6_prefixlen2mask __P((struct in6_addr *, int));
  609 int     in6_prefix_ioctl __P((struct socket *, u_long, caddr_t,
  610         struct ifnet *));
  611 int     in6_prefix_add_ifid __P((int, struct in6_ifaddr *));
  612 void    in6_prefix_remove_ifid __P((int, struct in6_ifaddr *));
  613 void    in6_purgeprefix __P((struct ifnet *));
  614 void    in6_ifremloop(struct ifaddr *);
  615 void    in6_ifaddloop(struct ifaddr *);
  616 
  617 int     in6_is_addr_deprecated __P((struct sockaddr_in6 *));
  618 struct inpcb;
  619 int in6_embedscope __P((struct in6_addr *, const struct sockaddr_in6 *,
  620         struct inpcb *, struct ifnet **));
  621 int in6_recoverscope __P((struct sockaddr_in6 *, const struct in6_addr *,
  622         struct ifnet *));
  623 void in6_clearscope __P((struct in6_addr *));
  624 int in6_src_ioctl __P((u_long, caddr_t));
  625 #endif /* _KERNEL */
  626 
  627 #endif /* _NETINET6_IN6_VAR_H_ */

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