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.h

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    1 /*      $FreeBSD: src/sys/netinet6/in6.h,v 1.35.2.3.2.1 2007/04/26 23:41:27 cperciva Exp $      */
    2 /*      $KAME: in6.h,v 1.89 2001/05/27 13:28:35 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) 1982, 1986, 1990, 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.h        8.3 (Berkeley) 1/3/94
   62  */
   63 
   64 #ifndef __KAME_NETINET_IN_H_INCLUDED_
   65 #error "do not include netinet6/in6.h directly, include netinet/in.h.  see RFC2553"
   66 #endif
   67 
   68 #ifndef _NETINET6_IN6_H_
   69 #define _NETINET6_IN6_H_
   70 
   71 /*
   72  * Identification of the network protocol stack
   73  * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
   74  * has the table of implementation/integration differences.
   75  */
   76 #define __KAME__
   77 #define __KAME_VERSION          "20010528/FreeBSD"
   78 
   79 /*
   80  * Local port number conventions:
   81  *
   82  * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
   83  * unless a kernel is compiled with IPNOPRIVPORTS defined.
   84  *
   85  * When a user does a bind(2) or connect(2) with a port number of zero,
   86  * a non-conflicting local port address is chosen.
   87  *
   88  * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
   89  * that is settable by sysctl(3); net.inet.ip.anonportmin and
   90  * net.inet.ip.anonportmax respectively.
   91  *
   92  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
   93  * default assignment range.
   94  *
   95  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
   96  *
   97  * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
   98  * and exists only for FreeBSD compatibility purposes.
   99  *
  100  * The value IP_PORTRANGE_LOW changes the range to the "low" are
  101  * that is (by convention) restricted to privileged processes.
  102  * This convention is based on "vouchsafe" principles only.
  103  * It is only secure if you trust the remote host to restrict these ports.
  104  * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
  105  */
  106 #if __BSD_VISIBLE
  107 #define IPV6PORT_RESERVED       1024
  108 #define IPV6PORT_ANONMIN        49152
  109 #define IPV6PORT_ANONMAX        65535
  110 #define IPV6PORT_RESERVEDMIN    600
  111 #define IPV6PORT_RESERVEDMAX    (IPV6PORT_RESERVED-1)
  112 #endif
  113 
  114 /*
  115  * IPv6 address
  116  */
  117 struct in6_addr {
  118         union {
  119                 uint8_t         __u6_addr8[16];
  120                 uint16_t        __u6_addr16[8];
  121                 uint32_t        __u6_addr32[4];
  122         } __u6_addr;                    /* 128-bit IP6 address */
  123 };
  124 
  125 #define s6_addr   __u6_addr.__u6_addr8
  126 #ifdef _KERNEL  /* XXX nonstandard */
  127 #define s6_addr8  __u6_addr.__u6_addr8
  128 #define s6_addr16 __u6_addr.__u6_addr16
  129 #define s6_addr32 __u6_addr.__u6_addr32
  130 #endif
  131 
  132 #define INET6_ADDRSTRLEN        46
  133 
  134 /*
  135  * XXX missing POSIX.1-2001 macro IPPROTO_IPV6.
  136  */
  137 
  138 /*
  139  * Socket address for IPv6
  140  */
  141 #if __BSD_VISIBLE
  142 #define SIN6_LEN
  143 #endif
  144 
  145 struct sockaddr_in6 {
  146         uint8_t         sin6_len;       /* length of this struct */
  147         sa_family_t     sin6_family;    /* AF_INET6 */
  148         in_port_t       sin6_port;      /* Transport layer port # */
  149         uint32_t        sin6_flowinfo;  /* IP6 flow information */
  150         struct in6_addr sin6_addr;      /* IP6 address */
  151         uint32_t        sin6_scope_id;  /* scope zone index */
  152 };
  153 
  154 /*
  155  * Local definition for masks
  156  */
  157 #ifdef _KERNEL  /* XXX nonstandard */
  158 #define IN6MASK0        {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
  159 #define IN6MASK32       {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
  160                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
  161 #define IN6MASK64       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
  162                             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
  163 #define IN6MASK96       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
  164                             0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
  165 #define IN6MASK128      {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
  166                             0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
  167 #endif
  168 
  169 #ifdef _KERNEL
  170 extern const struct sockaddr_in6 sa6_any;
  171 
  172 extern const struct in6_addr in6mask0;
  173 extern const struct in6_addr in6mask32;
  174 extern const struct in6_addr in6mask64;
  175 extern const struct in6_addr in6mask96;
  176 extern const struct in6_addr in6mask128;
  177 #endif /* _KERNEL */
  178 
  179 /*
  180  * Macros started with IPV6_ADDR is KAME local
  181  */
  182 #ifdef _KERNEL  /* XXX nonstandard */
  183 #if _BYTE_ORDER == _BIG_ENDIAN
  184 #define IPV6_ADDR_INT32_ONE     1
  185 #define IPV6_ADDR_INT32_TWO     2
  186 #define IPV6_ADDR_INT32_MNL     0xff010000
  187 #define IPV6_ADDR_INT32_MLL     0xff020000
  188 #define IPV6_ADDR_INT32_SMP     0x0000ffff
  189 #define IPV6_ADDR_INT16_ULL     0xfe80
  190 #define IPV6_ADDR_INT16_USL     0xfec0
  191 #define IPV6_ADDR_INT16_MLL     0xff02
  192 #elif _BYTE_ORDER == _LITTLE_ENDIAN
  193 #define IPV6_ADDR_INT32_ONE     0x01000000
  194 #define IPV6_ADDR_INT32_TWO     0x02000000
  195 #define IPV6_ADDR_INT32_MNL     0x000001ff
  196 #define IPV6_ADDR_INT32_MLL     0x000002ff
  197 #define IPV6_ADDR_INT32_SMP     0xffff0000
  198 #define IPV6_ADDR_INT16_ULL     0x80fe
  199 #define IPV6_ADDR_INT16_USL     0xc0fe
  200 #define IPV6_ADDR_INT16_MLL     0x02ff
  201 #endif
  202 #endif
  203 
  204 /*
  205  * Definition of some useful macros to handle IP6 addresses
  206  */
  207 #if __BSD_VISIBLE
  208 #define IN6ADDR_ANY_INIT \
  209         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  210             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
  211 #define IN6ADDR_LOOPBACK_INIT \
  212         {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  213             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
  214 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
  215         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  216             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
  217 #define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
  218         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  219             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
  220 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
  221         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  222             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
  223 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
  224         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  225             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
  226 #endif
  227 
  228 extern const struct in6_addr in6addr_any;
  229 extern const struct in6_addr in6addr_loopback;
  230 #if __BSD_VISIBLE
  231 extern const struct in6_addr in6addr_nodelocal_allnodes;
  232 extern const struct in6_addr in6addr_linklocal_allnodes;
  233 extern const struct in6_addr in6addr_linklocal_allrouters;
  234 #endif
  235 
  236 /*
  237  * Equality
  238  * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
  239  * does not supply memcmp().  For userland memcmp() is preferred as it is
  240  * in ANSI standard.
  241  */
  242 #ifdef _KERNEL
  243 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
  244     (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
  245 #else
  246 #if __BSD_VISIBLE
  247 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
  248     (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
  249 #endif
  250 #endif
  251 
  252 #ifdef _KERNEL                  /* non standard */
  253 /* see if two addresses are equal in a scope-conscious manner. */
  254 #define SA6_ARE_ADDR_EQUAL(a, b) \
  255         (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
  256           ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
  257          (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
  258 #endif
  259 
  260 /*
  261  * Unspecified
  262  */
  263 #define IN6_IS_ADDR_UNSPECIFIED(a)      \
  264         ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
  265          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
  266          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
  267          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
  268 
  269 /*
  270  * Loopback
  271  */
  272 #define IN6_IS_ADDR_LOOPBACK(a)         \
  273         ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
  274          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
  275          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
  276          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
  277 
  278 /*
  279  * IPv4 compatible
  280  */
  281 #define IN6_IS_ADDR_V4COMPAT(a)         \
  282         ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
  283          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
  284          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
  285          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) &&        \
  286          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
  287 
  288 /*
  289  * Mapped
  290  */
  291 #define IN6_IS_ADDR_V4MAPPED(a)               \
  292         ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
  293          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
  294          (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
  295 
  296 /*
  297  * KAME Scope Values
  298  */
  299 
  300 #ifdef _KERNEL  /* XXX nonstandard */
  301 #define IPV6_ADDR_SCOPE_NODELOCAL       0x01
  302 #define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01
  303 #define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
  304 #define IPV6_ADDR_SCOPE_SITELOCAL       0x05
  305 #define IPV6_ADDR_SCOPE_ORGLOCAL        0x08    /* just used in this file */
  306 #define IPV6_ADDR_SCOPE_GLOBAL          0x0e
  307 #else
  308 #define __IPV6_ADDR_SCOPE_NODELOCAL     0x01
  309 #define __IPV6_ADDR_SCOPE_INTFACELOCAL  0x01
  310 #define __IPV6_ADDR_SCOPE_LINKLOCAL     0x02
  311 #define __IPV6_ADDR_SCOPE_SITELOCAL     0x05
  312 #define __IPV6_ADDR_SCOPE_ORGLOCAL      0x08    /* just used in this file */
  313 #define __IPV6_ADDR_SCOPE_GLOBAL        0x0e
  314 #endif
  315 
  316 /*
  317  * Unicast Scope
  318  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
  319  */
  320 #define IN6_IS_ADDR_LINKLOCAL(a)        \
  321         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
  322 #define IN6_IS_ADDR_SITELOCAL(a)        \
  323         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
  324 
  325 /*
  326  * Multicast
  327  */
  328 #define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)
  329 
  330 #ifdef _KERNEL  /* XXX nonstandard */
  331 #define IPV6_ADDR_MC_SCOPE(a)           ((a)->s6_addr[1] & 0x0f)
  332 #else
  333 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
  334 #endif
  335 
  336 /*
  337  * Multicast Scope
  338  */
  339 #ifdef _KERNEL  /* refers nonstandard items */
  340 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
  341         (IN6_IS_ADDR_MULTICAST(a) &&    \
  342          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
  343 #define IN6_IS_ADDR_MC_INTFACELOCAL(a)  \
  344         (IN6_IS_ADDR_MULTICAST(a) &&    \
  345          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
  346 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
  347         (IN6_IS_ADDR_MULTICAST(a) &&    \
  348          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
  349 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
  350         (IN6_IS_ADDR_MULTICAST(a) &&    \
  351          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
  352 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
  353         (IN6_IS_ADDR_MULTICAST(a) &&    \
  354          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
  355 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
  356         (IN6_IS_ADDR_MULTICAST(a) &&    \
  357          (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
  358 #else
  359 #define IN6_IS_ADDR_MC_NODELOCAL(a)     \
  360         (IN6_IS_ADDR_MULTICAST(a) &&    \
  361          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
  362 #define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
  363         (IN6_IS_ADDR_MULTICAST(a) &&    \
  364          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
  365 #define IN6_IS_ADDR_MC_SITELOCAL(a)     \
  366         (IN6_IS_ADDR_MULTICAST(a) &&    \
  367          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
  368 #define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
  369         (IN6_IS_ADDR_MULTICAST(a) &&    \
  370          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
  371 #define IN6_IS_ADDR_MC_GLOBAL(a)        \
  372         (IN6_IS_ADDR_MULTICAST(a) &&    \
  373          (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
  374 #endif
  375 
  376 #ifdef _KERNEL  /* nonstandard */
  377 /*
  378  * KAME Scope
  379  */
  380 #define IN6_IS_SCOPE_LINKLOCAL(a)       \
  381         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
  382          (IN6_IS_ADDR_MC_LINKLOCAL(a)))
  383 
  384 #define IFA6_IS_DEPRECATED(a) \
  385         ((a)->ia6_lifetime.ia6t_preferred != 0 && \
  386          (a)->ia6_lifetime.ia6t_preferred < time_second)
  387 #define IFA6_IS_INVALID(a) \
  388         ((a)->ia6_lifetime.ia6t_expire != 0 && \
  389          (a)->ia6_lifetime.ia6t_expire < time_second)
  390 #endif /* _KERNEL */
  391 
  392 /*
  393  * IP6 route structure
  394  */
  395 #if __BSD_VISIBLE
  396 struct route_in6 {
  397         struct  rtentry *ro_rt;
  398         struct  sockaddr_in6 ro_dst;
  399 };
  400 #endif
  401 
  402 /*
  403  * Options for use with [gs]etsockopt at the IPV6 level.
  404  * First word of comment is data type; bool is stored in int.
  405  */
  406 /* no hdrincl */
  407 #if 0 /* the followings are relic in IPv4 and hence are disabled */
  408 #define IPV6_OPTIONS            1  /* buf/ip6_opts; set/get IP6 options */
  409 #define IPV6_RECVOPTS           5  /* bool; receive all IP6 opts w/dgram */
  410 #define IPV6_RECVRETOPTS        6  /* bool; receive IP6 opts for response */
  411 #define IPV6_RECVDSTADDR        7  /* bool; receive IP6 dst addr w/dgram */
  412 #define IPV6_RETOPTS            8  /* ip6_opts; set/get IP6 options */
  413 #endif
  414 #define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
  415 #define IPV6_UNICAST_HOPS       4  /* int; IP6 hops */
  416 #define IPV6_MULTICAST_IF       9  /* u_int; set/get IP6 multicast i/f  */
  417 #define IPV6_MULTICAST_HOPS     10 /* int; set/get IP6 multicast hops */
  418 #define IPV6_MULTICAST_LOOP     11 /* u_int; set/get IP6 multicast loopback */
  419 #define IPV6_JOIN_GROUP         12 /* ip6_mreq; join a group membership */
  420 #define IPV6_LEAVE_GROUP        13 /* ip6_mreq; leave a group membership */
  421 #define IPV6_PORTRANGE          14 /* int; range to choose for unspec port */
  422 #define ICMP6_FILTER            18 /* icmp6_filter; icmp6 filter */
  423 /* RFC2292 options */
  424 #ifdef _KERNEL
  425 #define IPV6_2292PKTINFO        19 /* bool; send/recv if, src/dst addr */
  426 #define IPV6_2292HOPLIMIT       20 /* bool; hop limit */
  427 #define IPV6_2292NEXTHOP        21 /* bool; next hop addr */
  428 #define IPV6_2292HOPOPTS        22 /* bool; hop-by-hop option */
  429 #define IPV6_2292DSTOPTS        23 /* bool; destinaion option */
  430 #define IPV6_2292RTHDR          24 /* bool; routing header */
  431 #define IPV6_2292PKTOPTIONS     25 /* buf/cmsghdr; set/get IPv6 options */
  432 #endif
  433 
  434 #define IPV6_CHECKSUM           26 /* int; checksum offset for raw socket */
  435 #define IPV6_V6ONLY             27 /* bool; make AF_INET6 sockets v6 only */
  436 #ifndef _KERNEL
  437 #define IPV6_BINDV6ONLY         IPV6_V6ONLY
  438 #endif
  439 
  440 #if 1 /* IPSEC */
  441 #define IPV6_IPSEC_POLICY       28 /* struct; get/set security policy */
  442 #endif
  443 #define IPV6_FAITH              29 /* bool; accept FAITH'ed connections */
  444 
  445 #if 1 /* IPV6FIREWALL */
  446 #define IPV6_FW_ADD             30 /* add a firewall rule to chain */
  447 #define IPV6_FW_DEL             31 /* delete a firewall rule from chain */
  448 #define IPV6_FW_FLUSH           32 /* flush firewall rule chain */
  449 #define IPV6_FW_ZERO            33 /* clear single/all firewall counter(s) */
  450 #define IPV6_FW_GET             34 /* get entire firewall rule chain */
  451 #endif
  452 
  453 /* new socket options introduced in RFC3542 */
  454 #define IPV6_RTHDRDSTOPTS       35 /* ip6_dest; send dst option before rthdr */
  455 
  456 #define IPV6_RECVPKTINFO        36 /* bool; recv if, dst addr */
  457 #define IPV6_RECVHOPLIMIT       37 /* bool; recv hop limit */
  458 #define IPV6_RECVRTHDR          38 /* bool; recv routing header */
  459 #define IPV6_RECVHOPOPTS        39 /* bool; recv hop-by-hop option */
  460 #define IPV6_RECVDSTOPTS        40 /* bool; recv dst option after rthdr */
  461 #ifdef _KERNEL
  462 #define IPV6_RECVRTHDRDSTOPTS   41 /* bool; recv dst option before rthdr */
  463 #endif
  464 
  465 #define IPV6_USE_MIN_MTU        42 /* bool; send packets at the minimum MTU */
  466 #define IPV6_RECVPATHMTU        43 /* bool; notify an according MTU */
  467 
  468 #define IPV6_PATHMTU            44 /* mtuinfo; get the current path MTU (sopt),
  469                                       4 bytes int; MTU notification (cmsg) */
  470 #if 0 /*obsoleted during 2292bis -> 3542*/
  471 #define IPV6_REACHCONF          45 /* no data; ND reachability confirm
  472                                       (cmsg only/not in of RFC3542) */
  473 #endif
  474 
  475 /* more new socket options introduced in RFC3542 */
  476 #define IPV6_PKTINFO            46 /* in6_pktinfo; send if, src addr */
  477 #define IPV6_HOPLIMIT           47 /* int; send hop limit */
  478 #define IPV6_NEXTHOP            48 /* sockaddr; next hop addr */
  479 #define IPV6_HOPOPTS            49 /* ip6_hbh; send hop-by-hop option */
  480 #define IPV6_DSTOPTS            50 /* ip6_dest; send dst option befor rthdr */
  481 #define IPV6_RTHDR              51 /* ip6_rthdr; send routing header */
  482 #if 0
  483 #define IPV6_PKTOPTIONS         52 /* buf/cmsghdr; set/get IPv6 options */
  484                                    /* obsoleted by RFC3542 */
  485 #endif
  486 
  487 #define IPV6_RECVTCLASS         57 /* bool; recv traffic class values */
  488 
  489 #define IPV6_AUTOFLOWLABEL      59 /* bool; attach flowlabel automagically */
  490 
  491 #define IPV6_TCLASS             61 /* int; send traffic class value */
  492 #define IPV6_DONTFRAG           62 /* bool; disable IPv6 fragmentation */
  493 
  494 #define IPV6_PREFER_TEMPADDR    63 /* int; prefer temporary addresses as
  495                                     * the source address.
  496                                     */
  497 
  498 /* to define items, should talk with KAME guys first, for *BSD compatibility */
  499 
  500 #define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
  501 #define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
  502 #define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */
  503 
  504 /*
  505  * Defaults and limits for options
  506  */
  507 #define IPV6_DEFAULT_MULTICAST_HOPS 1   /* normally limit m'casts to 1 hop */
  508 #define IPV6_DEFAULT_MULTICAST_LOOP 1   /* normally hear sends if a member */
  509 
  510 /*
  511  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
  512  */
  513 struct ipv6_mreq {
  514         struct in6_addr ipv6mr_multiaddr;
  515         unsigned int    ipv6mr_interface;
  516 };
  517 
  518 /*
  519  * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
  520  */
  521 struct in6_pktinfo {
  522         struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
  523         unsigned int    ipi6_ifindex;   /* send/recv interface index */
  524 };
  525 
  526 /*
  527  * Control structure for IPV6_RECVPATHMTU socket option.
  528  */
  529 struct ip6_mtuinfo {
  530         struct sockaddr_in6 ip6m_addr;  /* or sockaddr_storage? */
  531         uint32_t ip6m_mtu;
  532 };
  533 
  534 /*
  535  * Argument for IPV6_PORTRANGE:
  536  * - which range to search when port is unspecified at bind() or connect()
  537  */
  538 #define IPV6_PORTRANGE_DEFAULT  0       /* default range */
  539 #define IPV6_PORTRANGE_HIGH     1       /* "high" - request firewall bypass */
  540 #define IPV6_PORTRANGE_LOW      2       /* "low" - vouchsafe security */
  541 
  542 #if __BSD_VISIBLE
  543 /*
  544  * Definitions for inet6 sysctl operations.
  545  *
  546  * Third level is protocol number.
  547  * Fourth level is desired variable within that protocol.
  548  */
  549 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1)       /* don't list to IPV6PROTO_MAX */
  550 
  551 /*
  552  * Names for IP sysctl objects
  553  */
  554 #define IPV6CTL_FORWARDING      1       /* act as router */
  555 #define IPV6CTL_SENDREDIRECTS   2       /* may send redirects when forwarding*/
  556 #define IPV6CTL_DEFHLIM         3       /* default Hop-Limit */
  557 #ifdef notyet
  558 #define IPV6CTL_DEFMTU          4       /* default MTU */
  559 #endif
  560 #define IPV6CTL_FORWSRCRT       5       /* forward source-routed dgrams */
  561 #define IPV6CTL_STATS           6       /* stats */
  562 #define IPV6CTL_MRTSTATS        7       /* multicast forwarding stats */
  563 #define IPV6CTL_MRTPROTO        8       /* multicast routing protocol */
  564 #define IPV6CTL_MAXFRAGPACKETS  9       /* max packets reassembly queue */
  565 #define IPV6CTL_SOURCECHECK     10      /* verify source route and intf */
  566 #define IPV6CTL_SOURCECHECK_LOGINT 11   /* minimume logging interval */
  567 #define IPV6CTL_ACCEPT_RTADV    12
  568 #define IPV6CTL_KEEPFAITH       13
  569 #define IPV6CTL_LOG_INTERVAL    14
  570 #define IPV6CTL_HDRNESTLIMIT    15
  571 #define IPV6CTL_DAD_COUNT       16
  572 #define IPV6CTL_AUTO_FLOWLABEL  17
  573 #define IPV6CTL_DEFMCASTHLIM    18
  574 #define IPV6CTL_GIF_HLIM        19      /* default HLIM for gif encap packet */
  575 #define IPV6CTL_KAME_VERSION    20
  576 #define IPV6CTL_USE_DEPRECATED  21      /* use deprecated addr (RFC2462 5.5.4) */
  577 #define IPV6CTL_RR_PRUNE        22      /* walk timer for router renumbering */
  578 #if 0   /* obsolete */
  579 #define IPV6CTL_MAPPED_ADDR     23
  580 #endif
  581 #define IPV6CTL_V6ONLY          24
  582 #define IPV6CTL_RTEXPIRE        25      /* cloned route expiration time */
  583 #define IPV6CTL_RTMINEXPIRE     26      /* min value for expiration time */
  584 #define IPV6CTL_RTMAXCACHE      27      /* trigger level for dynamic expire */
  585 
  586 #define IPV6CTL_USETEMPADDR     32      /* use temporary addresses (RFC3041) */
  587 #define IPV6CTL_TEMPPLTIME      33      /* preferred lifetime for tmpaddrs */
  588 #define IPV6CTL_TEMPVLTIME      34      /* valid lifetime for tmpaddrs */
  589 #define IPV6CTL_AUTO_LINKLOCAL  35      /* automatic link-local addr assign */
  590 #define IPV6CTL_RIP6STATS       36      /* raw_ip6 stats */
  591 #define IPV6CTL_PREFER_TEMPADDR 37      /* prefer temporary addr as src */
  592 #define IPV6CTL_ADDRCTLPOLICY   38      /* get/set address selection policy */
  593 
  594 #define IPV6CTL_MAXFRAGS        41      /* max fragments */
  595 
  596 /* New entries should be added here from current IPV6CTL_MAXID value. */
  597 /* to define items, should talk with KAME guys first, for *BSD compatibility */
  598 /* 42-44 is already used in KAME */
  599 #define IPV6CTL_STEALTH         45
  600 #define IPV6CTL_RTHDR0_ALLOWED  46
  601 #define IPV6CTL_MAXID           47
  602 #endif /* __BSD_VISIBLE */
  603 
  604 /*
  605  * Redefinition of mbuf flags
  606  */
  607 #define M_AUTHIPHDR     M_PROTO2
  608 #define M_DECRYPTED     M_PROTO3
  609 #define M_LOOP          M_PROTO4
  610 #define M_AUTHIPDGM     M_PROTO5
  611 
  612 #ifdef _KERNEL
  613 struct cmsghdr;
  614 
  615 int     in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
  616 int     in6_localaddr __P((struct in6_addr *));
  617 int     in6_addrscope __P((struct in6_addr *));
  618 struct  in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
  619 extern void in6_if_up __P((struct ifnet *));
  620 struct sockaddr;
  621 extern  u_char  ip6_protox[];
  622 
  623 void    in6_sin6_2_sin __P((struct sockaddr_in *sin,
  624                             struct sockaddr_in6 *sin6));
  625 void    in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
  626                                  struct sockaddr_in6 *sin6));
  627 void    in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
  628 void    in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
  629 extern void addrsel_policy_init __P((void));
  630 
  631 #define satosin6(sa)    ((struct sockaddr_in6 *)(sa))
  632 #define sin6tosa(sin6)  ((struct sockaddr *)(sin6))
  633 #define ifatoia6(ifa)   ((struct in6_ifaddr *)(ifa))
  634 
  635 extern int      (*faithprefix_p)(struct in6_addr *);
  636 #endif /* _KERNEL */
  637 
  638 #ifndef _SIZE_T_DECLARED
  639 typedef __size_t        size_t;
  640 #define _SIZE_T_DECLARED
  641 #endif
  642 
  643 #ifndef _SOCKLEN_T_DECLARED
  644 typedef __socklen_t     socklen_t;
  645 #define _SOCKLEN_T_DECLARED
  646 #endif
  647 
  648 #if __BSD_VISIBLE
  649 
  650 __BEGIN_DECLS
  651 struct cmsghdr;
  652 
  653 extern int inet6_option_space __P((int));
  654 extern int inet6_option_init __P((void *, struct cmsghdr **, int));
  655 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *,
  656         int, int));
  657 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
  658 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **));
  659 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int));
  660 
  661 extern size_t inet6_rthdr_space __P((int, int));
  662 extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
  663 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
  664         unsigned int));
  665 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
  666 #if 0 /* not implemented yet */
  667 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
  668 #endif
  669 extern int inet6_rthdr_segments __P((const struct cmsghdr *));
  670 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
  671 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
  672 
  673 extern int inet6_opt_init __P((void *, socklen_t));
  674 extern int inet6_opt_append __P((void *, socklen_t, int, uint8_t, socklen_t,
  675         uint8_t, void **));
  676 extern int inet6_opt_finish __P((void *, socklen_t, int));
  677 extern int inet6_opt_set_val __P((void *, int, void *, socklen_t));
  678 
  679 extern int inet6_opt_next __P((void *, socklen_t, int, uint8_t *, socklen_t *,
  680         void **));
  681 extern int inet6_opt_find __P((void *, socklen_t, int, uint8_t, socklen_t *,
  682         void **));
  683 extern int inet6_opt_get_val __P((void *, int, void *, socklen_t));
  684 extern socklen_t inet6_rth_space __P((int, int));
  685 extern void *inet6_rth_init __P((void *, socklen_t, int, int));
  686 extern int inet6_rth_add __P((void *, const struct in6_addr *));
  687 extern int inet6_rth_reverse __P((const void *, void *));
  688 extern int inet6_rth_segments __P((const void *));
  689 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
  690 __END_DECLS
  691 
  692 #endif /* __BSD_VISIBLE */
  693 
  694 #endif /* !_NETINET6_IN6_H_ */

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