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: releng/8.3/sys/netinet6/in6_var.h 231302 2012-02-09 20:54:14Z bz $
   62  */
   63 
   64 #ifndef _NETINET6_IN6_VAR_H_
   65 #define _NETINET6_IN6_VAR_H_
   66 
   67 #include <sys/tree.h>
   68 
   69 #ifdef _KERNEL
   70 #include <sys/libkern.h>
   71 #endif
   72 
   73 /*
   74  * Interface address, Internet version.  One of these structures
   75  * is allocated for each interface with an Internet address.
   76  * The ifaddr structure contains the protocol-independent part
   77  * of the structure and is assumed to be first.
   78  */
   79 
   80 /*
   81  * pltime/vltime are just for future reference (required to implements 2
   82  * hour rule for hosts).  they should never be modified by nd6_timeout or
   83  * anywhere else.
   84  *      userland -> kernel: accept pltime/vltime
   85  *      kernel -> userland: throw up everything
   86  *      in kernel: modify preferred/expire only
   87  */
   88 struct in6_addrlifetime {
   89         time_t ia6t_expire;     /* valid lifetime expiration time */
   90         time_t ia6t_preferred;  /* preferred lifetime expiration time */
   91         u_int32_t ia6t_vltime;  /* valid lifetime */
   92         u_int32_t ia6t_pltime;  /* prefix lifetime */
   93 };
   94 
   95 struct nd_ifinfo;
   96 struct scope6_id;
   97 struct lltable;
   98 struct mld_ifinfo;
   99 
  100 struct in6_ifextra {
  101         struct in6_ifstat *in6_ifstat;
  102         struct icmp6_ifstat *icmp6_ifstat;
  103         struct nd_ifinfo *nd_ifinfo;
  104         struct scope6_id *scope6_id;
  105         struct lltable *lltable;
  106         struct mld_ifinfo *mld_ifinfo;
  107 };
  108 
  109 #define LLTABLE6(ifp)   (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable)
  110 
  111 struct  in6_ifaddr {
  112         struct  ifaddr ia_ifa;          /* protocol-independent info */
  113 #define ia_ifp          ia_ifa.ifa_ifp
  114 #define ia_flags        ia_ifa.ifa_flags
  115         struct  sockaddr_in6 ia_addr;   /* interface address */
  116         struct  sockaddr_in6 ia_net;    /* network number of interface */
  117         struct  sockaddr_in6 ia_dstaddr; /* space for destination addr */
  118         struct  sockaddr_in6 ia_prefixmask; /* prefix mask */
  119         u_int32_t ia_plen;              /* prefix length */
  120         TAILQ_ENTRY(in6_ifaddr) ia_link;        /* list of IPv6 addresses */
  121         int     ia6_flags;
  122 
  123         struct in6_addrlifetime ia6_lifetime;
  124         time_t  ia6_createtime; /* the creation time of this address, which is
  125                                  * currently used for temporary addresses only.
  126                                  */
  127         time_t  ia6_updatetime;
  128 
  129         /* back pointer to the ND prefix (for autoconfigured addresses only) */
  130         struct nd_prefix *ia6_ndpr;
  131 
  132         /* multicast addresses joined from the kernel */
  133         LIST_HEAD(, in6_multi_mship) ia6_memberships;
  134 };
  135 
  136 /* List of in6_ifaddr's. */
  137 TAILQ_HEAD(in6_ifaddrhead, in6_ifaddr);
  138 
  139 /* control structure to manage address selection policy */
  140 struct in6_addrpolicy {
  141         struct sockaddr_in6 addr; /* prefix address */
  142         struct sockaddr_in6 addrmask; /* prefix mask */
  143         int preced;             /* precedence */
  144         int label;              /* matching label */
  145         u_quad_t use;           /* statistics */
  146 };
  147 
  148 /*
  149  * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
  150  */
  151 struct in6_ifstat {
  152         u_quad_t ifs6_in_receive;       /* # of total input datagram */
  153         u_quad_t ifs6_in_hdrerr;        /* # of datagrams with invalid hdr */
  154         u_quad_t ifs6_in_toobig;        /* # of datagrams exceeded MTU */
  155         u_quad_t ifs6_in_noroute;       /* # of datagrams with no route */
  156         u_quad_t ifs6_in_addrerr;       /* # of datagrams with invalid dst */
  157         u_quad_t ifs6_in_protounknown;  /* # of datagrams with unknown proto */
  158                                         /* NOTE: increment on final dst if */
  159         u_quad_t ifs6_in_truncated;     /* # of truncated datagrams */
  160         u_quad_t ifs6_in_discard;       /* # of discarded datagrams */
  161                                         /* NOTE: fragment timeout is not here */
  162         u_quad_t ifs6_in_deliver;       /* # of datagrams delivered to ULP */
  163                                         /* NOTE: increment on final dst if */
  164         u_quad_t ifs6_out_forward;      /* # of datagrams forwarded */
  165                                         /* NOTE: increment on outgoing if */
  166         u_quad_t ifs6_out_request;      /* # of outgoing datagrams from ULP */
  167                                         /* NOTE: does not include forwrads */
  168         u_quad_t ifs6_out_discard;      /* # of discarded datagrams */
  169         u_quad_t ifs6_out_fragok;       /* # of datagrams fragmented */
  170         u_quad_t ifs6_out_fragfail;     /* # of datagrams failed on fragment */
  171         u_quad_t ifs6_out_fragcreat;    /* # of fragment datagrams */
  172                                         /* NOTE: this is # after fragment */
  173         u_quad_t ifs6_reass_reqd;       /* # of incoming fragmented packets */
  174                                         /* NOTE: increment on final dst if */
  175         u_quad_t ifs6_reass_ok;         /* # of reassembled packets */
  176                                         /* NOTE: this is # after reass */
  177                                         /* NOTE: increment on final dst if */
  178         u_quad_t ifs6_reass_fail;       /* # of reass failures */
  179                                         /* NOTE: may not be packet count */
  180                                         /* NOTE: increment on final dst if */
  181         u_quad_t ifs6_in_mcast;         /* # of inbound multicast datagrams */
  182         u_quad_t ifs6_out_mcast;        /* # of outbound multicast datagrams */
  183 };
  184 
  185 /*
  186  * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
  187  * XXX: I'm not sure if this file is the right place for this structure...
  188  */
  189 struct icmp6_ifstat {
  190         /*
  191          * Input statistics
  192          */
  193         /* ipv6IfIcmpInMsgs, total # of input messages */
  194         u_quad_t ifs6_in_msg;
  195         /* ipv6IfIcmpInErrors, # of input error messages */
  196         u_quad_t ifs6_in_error;
  197         /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
  198         u_quad_t ifs6_in_dstunreach;
  199         /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
  200         u_quad_t ifs6_in_adminprohib;
  201         /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
  202         u_quad_t ifs6_in_timeexceed;
  203         /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
  204         u_quad_t ifs6_in_paramprob;
  205         /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
  206         u_quad_t ifs6_in_pkttoobig;
  207         /* ipv6IfIcmpInEchos, # of input echo requests */
  208         u_quad_t ifs6_in_echo;
  209         /* ipv6IfIcmpInEchoReplies, # of input echo replies */
  210         u_quad_t ifs6_in_echoreply;
  211         /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
  212         u_quad_t ifs6_in_routersolicit;
  213         /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
  214         u_quad_t ifs6_in_routeradvert;
  215         /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
  216         u_quad_t ifs6_in_neighborsolicit;
  217         /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
  218         u_quad_t ifs6_in_neighboradvert;
  219         /* ipv6IfIcmpInRedirects, # of input redirects */
  220         u_quad_t ifs6_in_redirect;
  221         /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
  222         u_quad_t ifs6_in_mldquery;
  223         /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
  224         u_quad_t ifs6_in_mldreport;
  225         /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
  226         u_quad_t ifs6_in_mlddone;
  227 
  228         /*
  229          * Output statistics. We should solve unresolved routing problem...
  230          */
  231         /* ipv6IfIcmpOutMsgs, total # of output messages */
  232         u_quad_t ifs6_out_msg;
  233         /* ipv6IfIcmpOutErrors, # of output error messages */
  234         u_quad_t ifs6_out_error;
  235         /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
  236         u_quad_t ifs6_out_dstunreach;
  237         /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
  238         u_quad_t ifs6_out_adminprohib;
  239         /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
  240         u_quad_t ifs6_out_timeexceed;
  241         /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
  242         u_quad_t ifs6_out_paramprob;
  243         /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
  244         u_quad_t ifs6_out_pkttoobig;
  245         /* ipv6IfIcmpOutEchos, # of output echo requests */
  246         u_quad_t ifs6_out_echo;
  247         /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
  248         u_quad_t ifs6_out_echoreply;
  249         /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
  250         u_quad_t ifs6_out_routersolicit;
  251         /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
  252         u_quad_t ifs6_out_routeradvert;
  253         /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
  254         u_quad_t ifs6_out_neighborsolicit;
  255         /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
  256         u_quad_t ifs6_out_neighboradvert;
  257         /* ipv6IfIcmpOutRedirects, # of output redirects */
  258         u_quad_t ifs6_out_redirect;
  259         /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
  260         u_quad_t ifs6_out_mldquery;
  261         /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
  262         u_quad_t ifs6_out_mldreport;
  263         /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
  264         u_quad_t ifs6_out_mlddone;
  265 };
  266 
  267 struct  in6_ifreq {
  268         char    ifr_name[IFNAMSIZ];
  269         union {
  270                 struct  sockaddr_in6 ifru_addr;
  271                 struct  sockaddr_in6 ifru_dstaddr;
  272                 int     ifru_flags;
  273                 int     ifru_flags6;
  274                 int     ifru_metric;
  275                 caddr_t ifru_data;
  276                 struct in6_addrlifetime ifru_lifetime;
  277                 struct in6_ifstat ifru_stat;
  278                 struct icmp6_ifstat ifru_icmp6stat;
  279                 u_int32_t ifru_scope_id[16];
  280         } ifr_ifru;
  281 };
  282 
  283 struct  in6_aliasreq {
  284         char    ifra_name[IFNAMSIZ];
  285         struct  sockaddr_in6 ifra_addr;
  286         struct  sockaddr_in6 ifra_dstaddr;
  287         struct  sockaddr_in6 ifra_prefixmask;
  288         int     ifra_flags;
  289         struct in6_addrlifetime ifra_lifetime;
  290 };
  291 
  292 /* prefix type macro */
  293 #define IN6_PREFIX_ND   1
  294 #define IN6_PREFIX_RR   2
  295 
  296 /*
  297  * prefix related flags passed between kernel(NDP related part) and
  298  * user land command(ifconfig) and daemon(rtadvd).
  299  */
  300 struct in6_prflags {
  301         struct prf_ra {
  302                 u_char onlink : 1;
  303                 u_char autonomous : 1;
  304                 u_char reserved : 6;
  305         } prf_ra;
  306         u_char prf_reserved1;
  307         u_short prf_reserved2;
  308         /* want to put this on 4byte offset */
  309         struct prf_rr {
  310                 u_char decrvalid : 1;
  311                 u_char decrprefd : 1;
  312                 u_char reserved : 6;
  313         } prf_rr;
  314         u_char prf_reserved3;
  315         u_short prf_reserved4;
  316 };
  317 
  318 struct  in6_prefixreq {
  319         char    ipr_name[IFNAMSIZ];
  320         u_char  ipr_origin;
  321         u_char  ipr_plen;
  322         u_int32_t ipr_vltime;
  323         u_int32_t ipr_pltime;
  324         struct in6_prflags ipr_flags;
  325         struct  sockaddr_in6 ipr_prefix;
  326 };
  327 
  328 #define PR_ORIG_RA      0
  329 #define PR_ORIG_RR      1
  330 #define PR_ORIG_STATIC  2
  331 #define PR_ORIG_KERNEL  3
  332 
  333 #define ipr_raf_onlink          ipr_flags.prf_ra.onlink
  334 #define ipr_raf_auto            ipr_flags.prf_ra.autonomous
  335 
  336 #define ipr_statef_onlink       ipr_flags.prf_state.onlink
  337 
  338 #define ipr_rrf_decrvalid       ipr_flags.prf_rr.decrvalid
  339 #define ipr_rrf_decrprefd       ipr_flags.prf_rr.decrprefd
  340 
  341 struct  in6_rrenumreq {
  342         char    irr_name[IFNAMSIZ];
  343         u_char  irr_origin;
  344         u_char  irr_m_len;      /* match len for matchprefix */
  345         u_char  irr_m_minlen;   /* minlen for matching prefix */
  346         u_char  irr_m_maxlen;   /* maxlen for matching prefix */
  347         u_char  irr_u_uselen;   /* uselen for adding prefix */
  348         u_char  irr_u_keeplen;  /* keeplen from matching prefix */
  349         struct irr_raflagmask {
  350                 u_char onlink : 1;
  351                 u_char autonomous : 1;
  352                 u_char reserved : 6;
  353         } irr_raflagmask;
  354         u_int32_t irr_vltime;
  355         u_int32_t irr_pltime;
  356         struct in6_prflags irr_flags;
  357         struct  sockaddr_in6 irr_matchprefix;
  358         struct  sockaddr_in6 irr_useprefix;
  359 };
  360 
  361 #define irr_raf_mask_onlink     irr_raflagmask.onlink
  362 #define irr_raf_mask_auto       irr_raflagmask.autonomous
  363 #define irr_raf_mask_reserved   irr_raflagmask.reserved
  364 
  365 #define irr_raf_onlink          irr_flags.prf_ra.onlink
  366 #define irr_raf_auto            irr_flags.prf_ra.autonomous
  367 
  368 #define irr_statef_onlink       irr_flags.prf_state.onlink
  369 
  370 #define irr_rrf                 irr_flags.prf_rr
  371 #define irr_rrf_decrvalid       irr_flags.prf_rr.decrvalid
  372 #define irr_rrf_decrprefd       irr_flags.prf_rr.decrprefd
  373 
  374 /*
  375  * Given a pointer to an in6_ifaddr (ifaddr),
  376  * return a pointer to the addr as a sockaddr_in6
  377  */
  378 #define IA6_IN6(ia)     (&((ia)->ia_addr.sin6_addr))
  379 #define IA6_DSTIN6(ia)  (&((ia)->ia_dstaddr.sin6_addr))
  380 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
  381 #define IA6_SIN6(ia)    (&((ia)->ia_addr))
  382 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
  383 #define IFA_IN6(x)      (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
  384 #define IFA_DSTIN6(x)   (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
  385 
  386 #define IFPR_IN6(x)     (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
  387 
  388 #ifdef _KERNEL
  389 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m)      (       \
  390         (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
  391         (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
  392         (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
  393         (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
  394 #endif
  395 
  396 #define SIOCSIFADDR_IN6          _IOW('i', 12, struct in6_ifreq)
  397 #define SIOCGIFADDR_IN6         _IOWR('i', 33, struct in6_ifreq)
  398 
  399 #ifdef _KERNEL
  400 /*
  401  * SIOCSxxx ioctls should be unused (see comments in in6.c), but
  402  * we do not shift numbers for binary compatibility.
  403  */
  404 #define SIOCSIFDSTADDR_IN6       _IOW('i', 14, struct in6_ifreq)
  405 #define SIOCSIFNETMASK_IN6       _IOW('i', 22, struct in6_ifreq)
  406 #endif
  407 
  408 #define SIOCGIFDSTADDR_IN6      _IOWR('i', 34, struct in6_ifreq)
  409 #define SIOCGIFNETMASK_IN6      _IOWR('i', 37, struct in6_ifreq)
  410 
  411 #define SIOCDIFADDR_IN6          _IOW('i', 25, struct in6_ifreq)
  412 #define SIOCAIFADDR_IN6          _IOW('i', 26, struct in6_aliasreq)
  413 
  414 #define SIOCSIFPHYADDR_IN6       _IOW('i', 70, struct in6_aliasreq)
  415 #define SIOCGIFPSRCADDR_IN6     _IOWR('i', 71, struct in6_ifreq)
  416 #define SIOCGIFPDSTADDR_IN6     _IOWR('i', 72, struct in6_ifreq)
  417 
  418 #define SIOCGIFAFLAG_IN6        _IOWR('i', 73, struct in6_ifreq)
  419 
  420 #define SIOCGDRLST_IN6          _IOWR('i', 74, struct in6_drlist)
  421 #ifdef _KERNEL
  422 /* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */
  423 #define SIOCGPRLST_IN6          _IOWR('i', 75, struct in6_oprlist)
  424 #endif
  425 #ifdef _KERNEL
  426 #define OSIOCGIFINFO_IN6        _IOWR('i', 76, struct in6_ondireq)
  427 #endif
  428 #define SIOCGIFINFO_IN6         _IOWR('i', 108, struct in6_ndireq)
  429 #define SIOCSIFINFO_IN6         _IOWR('i', 109, struct in6_ndireq)
  430 #define SIOCSNDFLUSH_IN6        _IOWR('i', 77, struct in6_ifreq)
  431 #define SIOCGNBRINFO_IN6        _IOWR('i', 78, struct in6_nbrinfo)
  432 #define SIOCSPFXFLUSH_IN6       _IOWR('i', 79, struct in6_ifreq)
  433 #define SIOCSRTRFLUSH_IN6       _IOWR('i', 80, struct in6_ifreq)
  434 
  435 #define SIOCGIFALIFETIME_IN6    _IOWR('i', 81, struct in6_ifreq)
  436 #define SIOCSIFALIFETIME_IN6    _IOWR('i', 82, struct in6_ifreq)
  437 #define SIOCGIFSTAT_IN6         _IOWR('i', 83, struct in6_ifreq)
  438 #define SIOCGIFSTAT_ICMP6       _IOWR('i', 84, struct in6_ifreq)
  439 
  440 #define SIOCSDEFIFACE_IN6       _IOWR('i', 85, struct in6_ndifreq)
  441 #define SIOCGDEFIFACE_IN6       _IOWR('i', 86, struct in6_ndifreq)
  442 
  443 #define SIOCSIFINFO_FLAGS       _IOWR('i', 87, struct in6_ndireq) /* XXX */
  444 
  445 #define SIOCSSCOPE6             _IOW('i', 88, struct in6_ifreq)
  446 #define SIOCGSCOPE6             _IOWR('i', 89, struct in6_ifreq)
  447 #define SIOCGSCOPE6DEF          _IOWR('i', 90, struct in6_ifreq)
  448 
  449 #define SIOCSIFPREFIX_IN6       _IOW('i', 100, struct in6_prefixreq) /* set */
  450 #define SIOCGIFPREFIX_IN6       _IOWR('i', 101, struct in6_prefixreq) /* get */
  451 #define SIOCDIFPREFIX_IN6       _IOW('i', 102, struct in6_prefixreq) /* del */
  452 #define SIOCAIFPREFIX_IN6       _IOW('i', 103, struct in6_rrenumreq) /* add */
  453 #define SIOCCIFPREFIX_IN6       _IOW('i', 104, \
  454                                      struct in6_rrenumreq) /* change */
  455 #define SIOCSGIFPREFIX_IN6      _IOW('i', 105, \
  456                                      struct in6_rrenumreq) /* set global */
  457 
  458 #define SIOCGETSGCNT_IN6        _IOWR('u', 106, \
  459                                       struct sioc_sg_req6) /* get s,g pkt cnt */
  460 #define SIOCGETMIFCNT_IN6       _IOWR('u', 107, \
  461                                       struct sioc_mif_req6) /* get pkt cnt per if */
  462 
  463 #define SIOCAADDRCTL_POLICY     _IOW('u', 108, struct in6_addrpolicy)
  464 #define SIOCDADDRCTL_POLICY     _IOW('u', 109, struct in6_addrpolicy)
  465 
  466 #define IN6_IFF_ANYCAST         0x01    /* anycast address */
  467 #define IN6_IFF_TENTATIVE       0x02    /* tentative address */
  468 #define IN6_IFF_DUPLICATED      0x04    /* DAD detected duplicate */
  469 #define IN6_IFF_DETACHED        0x08    /* may be detached from the link */
  470 #define IN6_IFF_DEPRECATED      0x10    /* deprecated address */
  471 #define IN6_IFF_NODAD           0x20    /* don't perform DAD on this address
  472                                          * (used only at first SIOC* call)
  473                                          */
  474 #define IN6_IFF_AUTOCONF        0x40    /* autoconfigurable address. */
  475 #define IN6_IFF_TEMPORARY       0x80    /* temporary (anonymous) address. */
  476 #define IN6_IFF_NOPFX           0x8000  /* skip kernel prefix management.
  477                                          * XXX: this should be temporary.
  478                                          */
  479 
  480 /* do not input/output */
  481 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
  482 
  483 #ifdef _KERNEL
  484 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
  485 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
  486 #endif
  487 
  488 #ifdef _KERNEL
  489 VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead);
  490 #define V_in6_ifaddrhead                VNET(in6_ifaddrhead)
  491 
  492 extern struct rwlock in6_ifaddr_lock;
  493 #define IN6_IFADDR_LOCK_ASSERT( )       rw_assert(&in6_ifaddr_lock, RA_LOCKED)
  494 #define IN6_IFADDR_RLOCK()              rw_rlock(&in6_ifaddr_lock)
  495 #define IN6_IFADDR_RLOCK_ASSERT()       rw_assert(&in6_ifaddr_lock, RA_RLOCKED)
  496 #define IN6_IFADDR_RUNLOCK()            rw_runlock(&in6_ifaddr_lock)
  497 #define IN6_IFADDR_WLOCK()              rw_wlock(&in6_ifaddr_lock)
  498 #define IN6_IFADDR_WLOCK_ASSERT()       rw_assert(&in6_ifaddr_lock, RA_WLOCKED)
  499 #define IN6_IFADDR_WUNLOCK()            rw_wunlock(&in6_ifaddr_lock)
  500 
  501 VNET_DECLARE(struct icmp6stat, icmp6stat);
  502 #define V_icmp6stat                     VNET(icmp6stat)
  503 #define in6_ifstat_inc(ifp, tag) \
  504 do {                                                            \
  505         if (ifp)                                                \
  506                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \
  507 } while (/*CONSTCOND*/ 0)
  508 
  509 extern struct in6_addr zeroin6_addr;
  510 extern u_char inet6ctlerrmap[];
  511 VNET_DECLARE(unsigned long, in6_maxmtu);
  512 #define V_in6_maxmtu                    VNET(in6_maxmtu)
  513 #endif /* _KERNEL */
  514 
  515 /*
  516  * IPv6 multicast MLD-layer source entry.
  517  */
  518 struct ip6_msource {
  519         RB_ENTRY(ip6_msource)   im6s_link;      /* RB tree links */
  520         struct in6_addr         im6s_addr;
  521         struct im6s_st {
  522                 uint16_t        ex;             /* # of exclusive members */
  523                 uint16_t        in;             /* # of inclusive members */
  524         }                       im6s_st[2];     /* state at t0, t1 */
  525         uint8_t                 im6s_stp;       /* pending query */
  526 };
  527 RB_HEAD(ip6_msource_tree, ip6_msource);
  528 
  529 /*
  530  * IPv6 multicast PCB-layer source entry.
  531  *
  532  * NOTE: overlapping use of struct ip6_msource fields at start.
  533  */
  534 struct in6_msource {
  535         RB_ENTRY(ip6_msource)   im6s_link;      /* Common field */
  536         struct in6_addr         im6s_addr;      /* Common field */
  537         uint8_t                 im6sl_st[2];    /* state before/at commit */
  538 };
  539 
  540 #ifdef _KERNEL
  541 /*
  542  * IPv6 source tree comparison function.
  543  *
  544  * An ordered predicate is necessary; bcmp() is not documented to return
  545  * an indication of order, memcmp() is, and is an ISO C99 requirement.
  546  */
  547 static __inline int
  548 ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b)
  549 {
  550 
  551         return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr)));
  552 }
  553 RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp);
  554 #endif /* _KERNEL */
  555 
  556 /*
  557  * IPv6 multicast PCB-layer group filter descriptor.
  558  */
  559 struct in6_mfilter {
  560         struct ip6_msource_tree im6f_sources; /* source list for (S,G) */
  561         u_long                  im6f_nsrc;    /* # of source entries */
  562         uint8_t                 im6f_st[2];   /* state before/at commit */
  563 };
  564 
  565 /*
  566  * Legacy KAME IPv6 multicast membership descriptor.
  567  */
  568 struct in6_multi_mship {
  569         struct  in6_multi *i6mm_maddr;
  570         LIST_ENTRY(in6_multi_mship) i6mm_chain;
  571 };
  572 
  573 /*
  574  * IPv6 group descriptor.
  575  *
  576  * For every entry on an ifnet's if_multiaddrs list which represents
  577  * an IP multicast group, there is one of these structures.
  578  *
  579  * If any source filters are present, then a node will exist in the RB-tree
  580  * to permit fast lookup by source whenever an operation takes place.
  581  * This permits pre-order traversal when we issue reports.
  582  * Source filter trees are kept separately from the socket layer to
  583  * greatly simplify locking.
  584  *
  585  * When MLDv2 is active, in6m_timer is the response to group query timer.
  586  * The state-change timer in6m_sctimer is separate; whenever state changes
  587  * for the group the state change record is generated and transmitted,
  588  * and kept if retransmissions are necessary.
  589  *
  590  * FUTURE: in6m_link is now only used when groups are being purged
  591  * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but
  592  * because it is at the very start of the struct, we can't do this
  593  * w/o breaking the ABI for ifmcstat.
  594  */
  595 struct in6_multi {
  596         LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
  597         struct  in6_addr in6m_addr;     /* IPv6 multicast address */
  598         struct  ifnet *in6m_ifp;        /* back pointer to ifnet */
  599         struct  ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */
  600         u_int   in6m_refcount;          /* reference count */
  601         u_int   in6m_state;             /* state of the membership */
  602         u_int   in6m_timer;             /* MLD6 listener report timer */
  603 
  604         /* New fields for MLDv2 follow. */
  605         struct mld_ifinfo       *in6m_mli;      /* MLD info */
  606         SLIST_ENTRY(in6_multi)   in6m_nrele;    /* to-be-released by MLD */
  607         struct ip6_msource_tree  in6m_srcs;     /* tree of sources */
  608         u_long                   in6m_nsrc;     /* # of tree entries */
  609 
  610         struct ifqueue           in6m_scq;      /* queue of pending
  611                                                  * state-change packets */
  612         struct timeval           in6m_lastgsrtv;        /* last G-S-R query */
  613         uint16_t                 in6m_sctimer;  /* state-change timer */
  614         uint16_t                 in6m_scrv;     /* state-change rexmit count */
  615 
  616         /*
  617          * SSM state counters which track state at T0 (the time the last
  618          * state-change report's RV timer went to zero) and T1
  619          * (time of pending report, i.e. now).
  620          * Used for computing MLDv2 state-change reports. Several refcounts
  621          * are maintained here to optimize for common use-cases.
  622          */
  623         struct in6m_st {
  624                 uint16_t        iss_fmode;      /* MLD filter mode */
  625                 uint16_t        iss_asm;        /* # of ASM listeners */
  626                 uint16_t        iss_ex;         /* # of exclusive members */
  627                 uint16_t        iss_in;         /* # of inclusive members */
  628                 uint16_t        iss_rec;        /* # of recorded sources */
  629         }                       in6m_st[2];     /* state at t0, t1 */
  630 };
  631 
  632 /*
  633  * Helper function to derive the filter mode on a source entry
  634  * from its internal counters. Predicates are:
  635  *  A source is only excluded if all listeners exclude it.
  636  *  A source is only included if no listeners exclude it,
  637  *  and at least one listener includes it.
  638  * May be used by ifmcstat(8).
  639  */
  640 static __inline uint8_t
  641 im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims,
  642     uint8_t t)
  643 {
  644 
  645         t = !!t;
  646         if (inm->in6m_st[t].iss_ex > 0 &&
  647             inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex)
  648                 return (MCAST_EXCLUDE);
  649         else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0)
  650                 return (MCAST_INCLUDE);
  651         return (MCAST_UNDEFINED);
  652 }
  653 
  654 #ifdef _KERNEL
  655 
  656 /*
  657  * Lock macros for IPv6 layer multicast address lists.  IPv6 lock goes
  658  * before link layer multicast locks in the lock order.  In most cases,
  659  * consumers of IN_*_MULTI() macros should acquire the locks before
  660  * calling them; users of the in_{add,del}multi() functions should not.
  661  */
  662 extern struct mtx in6_multi_mtx;
  663 #define IN6_MULTI_LOCK()                mtx_lock(&in6_multi_mtx)
  664 #define IN6_MULTI_UNLOCK()              mtx_unlock(&in6_multi_mtx)
  665 #define IN6_MULTI_LOCK_ASSERT()         mtx_assert(&in6_multi_mtx, MA_OWNED)
  666 #define IN6_MULTI_UNLOCK_ASSERT()       mtx_assert(&in6_multi_mtx, MA_NOTOWNED)
  667 
  668 /*
  669  * Look up an in6_multi record for an IPv6 multicast address
  670  * on the interface ifp.
  671  * If no record found, return NULL.
  672  *
  673  * SMPng: The IN6_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held.
  674  */
  675 static __inline struct in6_multi *
  676 in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr)
  677 {
  678         struct ifmultiaddr *ifma;
  679         struct in6_multi *inm;
  680 
  681         IN6_MULTI_LOCK_ASSERT();
  682         IF_ADDR_LOCK_ASSERT(ifp);
  683 
  684         inm = NULL;
  685         TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) {
  686                 if (ifma->ifma_addr->sa_family == AF_INET6) {
  687                         inm = (struct in6_multi *)ifma->ifma_protospec;
  688                         if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr))
  689                                 break;
  690                         inm = NULL;
  691                 }
  692         }
  693         return (inm);
  694 }
  695 
  696 /*
  697  * Wrapper for in6m_lookup_locked().
  698  *
  699  * SMPng: Assumes that neithr the IN6_MULTI_LOCK() or IF_ADDR_LOCK() are held.
  700  */
  701 static __inline struct in6_multi *
  702 in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr)
  703 {
  704         struct in6_multi *inm;
  705 
  706         IN6_MULTI_LOCK();
  707         IF_ADDR_LOCK(ifp);
  708         inm = in6m_lookup_locked(ifp, mcaddr);
  709         IF_ADDR_UNLOCK(ifp);
  710         IN6_MULTI_UNLOCK();
  711 
  712         return (inm);
  713 }
  714 
  715 /* Acquire an in6_multi record. */
  716 static __inline void
  717 in6m_acquire_locked(struct in6_multi *inm)
  718 {
  719 
  720         IN6_MULTI_LOCK_ASSERT();
  721         ++inm->in6m_refcount;
  722 }
  723 
  724 struct ip6_moptions;
  725 struct sockopt;
  726 
  727 /* Multicast KPIs. */
  728 int     im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *,
  729             const struct sockaddr *, const struct sockaddr *);
  730 int     in6_mc_join(struct ifnet *, const struct in6_addr *,
  731             struct in6_mfilter *, struct in6_multi **, int);
  732 int     in6_mc_join_locked(struct ifnet *, const struct in6_addr *,
  733             struct in6_mfilter *, struct in6_multi **, int);
  734 int     in6_mc_leave(struct in6_multi *, struct in6_mfilter *);
  735 int     in6_mc_leave_locked(struct in6_multi *, struct in6_mfilter *);
  736 void    in6m_clear_recorded(struct in6_multi *);
  737 void    in6m_commit(struct in6_multi *);
  738 void    in6m_print(const struct in6_multi *);
  739 int     in6m_record_source(struct in6_multi *, const struct in6_addr *);
  740 void    in6m_release_locked(struct in6_multi *);
  741 void    ip6_freemoptions(struct ip6_moptions *);
  742 int     ip6_getmoptions(struct inpcb *, struct sockopt *);
  743 int     ip6_setmoptions(struct inpcb *, struct sockopt *);
  744 
  745 /* Legacy KAME multicast KPIs. */
  746 struct in6_multi_mship *
  747         in6_joingroup(struct ifnet *, struct in6_addr *, int *, int);
  748 int     in6_leavegroup(struct in6_multi_mship *);
  749 
  750 /* flags to in6_update_ifa */
  751 #define IN6_IFAUPDATE_DADDELAY  0x1 /* first time to configure an address */
  752 
  753 int     in6_mask2len __P((struct in6_addr *, u_char *));
  754 int     in6_control __P((struct socket *, u_long, caddr_t, struct ifnet *,
  755         struct thread *));
  756 int     in6_update_ifa __P((struct ifnet *, struct in6_aliasreq *,
  757         struct in6_ifaddr *, int));
  758 void    in6_purgeaddr __P((struct ifaddr *));
  759 int     in6if_do_dad __P((struct ifnet *));
  760 void    in6_purgeif __P((struct ifnet *));
  761 void    in6_savemkludge __P((struct in6_ifaddr *));
  762 void    *in6_domifattach __P((struct ifnet *));
  763 void    in6_domifdetach __P((struct ifnet *, void *));
  764 void    in6_setmaxmtu   __P((void));
  765 int     in6_if2idlen   __P((struct ifnet *));
  766 struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *, int));
  767 struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *, struct in6_addr *));
  768 char    *ip6_sprintf __P((char *, const struct in6_addr *));
  769 int     in6_addr2zoneid __P((struct ifnet *, struct in6_addr *, u_int32_t *));
  770 int     in6_matchlen __P((struct in6_addr *, struct in6_addr *));
  771 int     in6_are_prefix_equal __P((struct in6_addr *, struct in6_addr *, int));
  772 void    in6_prefixlen2mask __P((struct in6_addr *, int));
  773 int     in6_prefix_ioctl __P((struct socket *, u_long, caddr_t,
  774         struct ifnet *));
  775 int     in6_prefix_add_ifid __P((int, struct in6_ifaddr *));
  776 void    in6_prefix_remove_ifid __P((int, struct in6_ifaddr *));
  777 void    in6_purgeprefix __P((struct ifnet *));
  778 void    in6_ifremloop(struct ifaddr *);
  779 void    in6_ifaddloop(struct ifaddr *);
  780 
  781 int     in6_is_addr_deprecated __P((struct sockaddr_in6 *));
  782 int     in6_src_ioctl __P((u_long, caddr_t));
  783 #endif /* _KERNEL */
  784 
  785 #endif /* _NETINET6_IN6_VAR_H_ */

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