root/native_client_sdk/src/libraries/third_party/newlib-extras/netinet6/in6.h

INCLUDED FROM

/*      $FreeBSD: src/sys/netinet6/in6.h,v 1.19 2002/04/19 04:46:22 suz Exp $   */
/*      $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $    */

/*
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Copyright (c) 1982, 1986, 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)in.h        8.3 (Berkeley) 1/3/94
 */

#ifndef __KAME_NETINET_IN_H_INCLUDED_
#error "do not include netinet6/in6.h directly, include netinet/in.h.  see RFC2553"
#endif

#ifndef _NETINET6_IN6_H_
#define _NETINET6_IN6_H_

#include <sys/types.h>

/*
 * Identification of the network protocol stack
 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
 * has the table of implementation/integration differences.
 */
#define __KAME__
#define __KAME_VERSION          "20010528/FreeBSD"

/*
 * Local port number conventions:
 *
 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
 * unless a kernel is compiled with IPNOPRIVPORTS defined.
 *
 * When a user does a bind(2) or connect(2) with a port number of zero,
 * a non-conflicting local port address is chosen.
 *
 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
 * that is settable by sysctl(3); net.inet.ip.anonportmin and
 * net.inet.ip.anonportmax respectively.
 *
 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 * default assignment range.
 *
 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 *
 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
 * and exists only for FreeBSD compatibility purposes.
 *
 * The value IP_PORTRANGE_LOW changes the range to the "low" are
 * that is (by convention) restricted to privileged processes.
 * This convention is based on "vouchsafe" principles only.
 * It is only secure if you trust the remote host to restrict these ports.
 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
 */

#define IPV6PORT_RESERVED       1024
#define IPV6PORT_ANONMIN        49152
#define IPV6PORT_ANONMAX        65535
#define IPV6PORT_RESERVEDMIN    600
#define IPV6PORT_RESERVEDMAX    (IPV6PORT_RESERVED-1)

/*
 * IPv6 address
 */
struct in6_addr {
        union {
                uint8_t   __u6_addr8[16];
                uint16_t  __u6_addr16[8];
                uint32_t  __u6_addr32[4];
        } __u6_addr;                    /* 128-bit IP6 address */
};

#define s6_addr   __u6_addr.__u6_addr8
#ifdef _KERNEL  /* XXX nonstandard */
#define s6_addr8  __u6_addr.__u6_addr8
#define s6_addr16 __u6_addr.__u6_addr16
#define s6_addr32 __u6_addr.__u6_addr32
#endif

#define INET6_ADDRSTRLEN        46

/*
 * Socket address for IPv6
 */
#ifndef _XOPEN_SOURCE
#define SIN6_LEN
#endif
struct sockaddr_in6 {
        uint8_t sin6_family;    /* AF_INET6 (sa_family_t) */
        uint16_t        sin6_port;      /* Transport layer port # (in_port_t)*/
        uint32_t        sin6_flowinfo;  /* IP6 flow information */
        struct in6_addr sin6_addr;      /* IP6 address */
        uint32_t        sin6_scope_id;  /* scope zone index */
};

/*
 * Local definition for masks
 */
#ifdef _KERNEL  /* XXX nonstandard */
#define IN6MASK0        {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
#define IN6MASK32       {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
                            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
#define IN6MASK64       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
                            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
#define IN6MASK96       {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
                            0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
#define IN6MASK128      {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
                            0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
#endif

#ifdef _KERNEL
extern const struct sockaddr_in6 sa6_any;

extern const struct in6_addr in6mask0;
extern const struct in6_addr in6mask32;
extern const struct in6_addr in6mask64;
extern const struct in6_addr in6mask96;
extern const struct in6_addr in6mask128;
#endif /* _KERNEL */

/*
 * Macros started with IPV6_ADDR is KAME local
 */
#ifdef _KERNEL  /* XXX nonstandard */
#if BYTE_ORDER == BIG_ENDIAN
#define IPV6_ADDR_INT32_ONE     1
#define IPV6_ADDR_INT32_TWO     2
#define IPV6_ADDR_INT32_MNL     0xff010000
#define IPV6_ADDR_INT32_MLL     0xff020000
#define IPV6_ADDR_INT32_SMP     0x0000ffff
#define IPV6_ADDR_INT16_ULL     0xfe80
#define IPV6_ADDR_INT16_USL     0xfec0
#define IPV6_ADDR_INT16_MLL     0xff02
#elif BYTE_ORDER == LITTLE_ENDIAN
#define IPV6_ADDR_INT32_ONE     0x01000000
#define IPV6_ADDR_INT32_TWO     0x02000000
#define IPV6_ADDR_INT32_MNL     0x000001ff
#define IPV6_ADDR_INT32_MLL     0x000002ff
#define IPV6_ADDR_INT32_SMP     0xffff0000
#define IPV6_ADDR_INT16_ULL     0x80fe
#define IPV6_ADDR_INT16_USL     0xc0fe
#define IPV6_ADDR_INT16_MLL     0x02ff
#endif
#endif

/*
 * Definition of some useful macros to handle IP6 addresses
 */
#define IN6ADDR_ANY_INIT \
        {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
#define IN6ADDR_LOOPBACK_INIT \
        {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
        {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
        {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
        {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}


__BEGIN_DECLS

extern const struct in6_addr in6addr_any;
extern const struct in6_addr in6addr_loopback;
extern const struct in6_addr in6addr_nodelocal_allnodes;
extern const struct in6_addr in6addr_linklocal_allnodes;
extern const struct in6_addr in6addr_linklocal_allrouters;

__END_DECLS

/*
 * Equality
 * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
 * does not supply memcmp().  For userland memcmp() is preferred as it is
 * in ANSI standard.
 */
#ifdef _KERNEL
#define IN6_ARE_ADDR_EQUAL(a, b)                        \
    (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
#else
#define IN6_ARE_ADDR_EQUAL(a, b)                        \
    (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
#endif

#ifdef _KERNEL                  /* non standard */
/* see if two addresses are equal in a scope-conscious manner. */
#define SA6_ARE_ADDR_EQUAL(a, b) \
        (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
          ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
         (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
#endif

/*
 * Unspecified
 */
#define IN6_IS_ADDR_UNSPECIFIED(a)      \
        ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0))

/*
 * Loopback
 */
#define IN6_IS_ADDR_LOOPBACK(a)         \
        ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))

/*
 * IPv4 compatible
 */
#define IN6_IS_ADDR_V4COMPAT(a)         \
        ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))

/*
 * Mapped
 */
#define IN6_IS_ADDR_V4MAPPED(a)               \
        ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&  \
         (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))

/*
 * KAME Scope Values
 */

#ifdef _KERNEL  /* XXX nonstandard */
#define IPV6_ADDR_SCOPE_NODELOCAL       0x01
#define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
#define IPV6_ADDR_SCOPE_SITELOCAL       0x05
#define IPV6_ADDR_SCOPE_ORGLOCAL        0x08    /* just used in this file */
#define IPV6_ADDR_SCOPE_GLOBAL          0x0e
#else
#define __IPV6_ADDR_SCOPE_NODELOCAL     0x01
#define __IPV6_ADDR_SCOPE_LINKLOCAL     0x02
#define __IPV6_ADDR_SCOPE_SITELOCAL     0x05
#define __IPV6_ADDR_SCOPE_ORGLOCAL      0x08    /* just used in this file */
#define __IPV6_ADDR_SCOPE_GLOBAL        0x0e
#endif

/*
 * Unicast Scope
 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 */
#define IN6_IS_ADDR_LINKLOCAL(a)        \
        (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
#define IN6_IS_ADDR_SITELOCAL(a)        \
        (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))

/*
 * Multicast
 */
#define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)

#ifdef _KERNEL  /* XXX nonstandard */
#define IPV6_ADDR_MC_SCOPE(a)           ((a)->s6_addr[1] & 0x0f)
#else
#define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
#endif

/*
 * Multicast Scope
 */
#ifdef _KERNEL  /* refers nonstandard items */
#define IN6_IS_ADDR_MC_NODELOCAL(a)     \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
#define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
#define IN6_IS_ADDR_MC_SITELOCAL(a)     \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
#define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
#define IN6_IS_ADDR_MC_GLOBAL(a)        \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
#else
#define IN6_IS_ADDR_MC_NODELOCAL(a)     \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
#define IN6_IS_ADDR_MC_LINKLOCAL(a)     \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
#define IN6_IS_ADDR_MC_SITELOCAL(a)     \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
#define IN6_IS_ADDR_MC_ORGLOCAL(a)      \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
#define IN6_IS_ADDR_MC_GLOBAL(a)        \
        (IN6_IS_ADDR_MULTICAST(a) &&    \
         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
#endif

#ifdef _KERNEL  /* nonstandard */
/*
 * KAME Scope
 */
#define IN6_IS_SCOPE_LINKLOCAL(a)       \
        ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
         (IN6_IS_ADDR_MC_LINKLOCAL(a)))

#define IFA6_IS_DEPRECATED(a) \
        ((a)->ia6_lifetime.ia6t_preferred != 0 && \
         (a)->ia6_lifetime.ia6t_preferred < time_second)
#define IFA6_IS_INVALID(a) \
        ((a)->ia6_lifetime.ia6t_expire != 0 && \
         (a)->ia6_lifetime.ia6t_expire < time_second)
#endif /* _KERNEL */

/*
 * IP6 route structure
 */
#ifndef _XOPEN_SOURCE
struct route_in6 {
        struct  rtentry *ro_rt;
        struct  sockaddr_in6 ro_dst;
};
#endif

/*
 * Options for use with [gs]etsockopt at the IPV6 level.
 * First word of comment is data type; bool is stored in int.
 */
/* no hdrincl */
#if 0 /* the followings are relic in IPv4 and hence are disabled */
#define IPV6_OPTIONS            1  /* buf/ip6_opts; set/get IP6 options */
#define IPV6_RECVOPTS           5  /* bool; receive all IP6 opts w/dgram */
#define IPV6_RECVRETOPTS        6  /* bool; receive IP6 opts for response */
#define IPV6_RECVDSTADDR        7  /* bool; receive IP6 dst addr w/dgram */
#define IPV6_RETOPTS            8  /* ip6_opts; set/get IP6 options */
#endif
#define IPV6_SOCKOPT_RESERVED1  3  /* reserved for future use */
#define IPV6_UNICAST_HOPS       4  /* int; IP6 hops */
#define IPV6_MULTICAST_IF       9  /* u_char; set/get IP6 multicast i/f  */
#define IPV6_MULTICAST_HOPS     10 /* u_char; set/get IP6 multicast hops */
#define IPV6_MULTICAST_LOOP     11 /* u_char; set/get IP6 multicast loopback */
#define IPV6_JOIN_GROUP         12 /* ip6_mreq; join a group membership */
#define IPV6_LEAVE_GROUP        13 /* ip6_mreq; leave a group membership */
#define IPV6_PORTRANGE          14 /* int; range to choose for unspec port */
#define ICMP6_FILTER            18 /* icmp6_filter; icmp6 filter */
/* RFC2292 options */
#define IPV6_PKTINFO            19 /* bool; send/recv if, src/dst addr */
#define IPV6_HOPLIMIT           20 /* bool; hop limit */
#define IPV6_NEXTHOP            21 /* bool; next hop addr */
#define IPV6_HOPOPTS            22 /* bool; hop-by-hop option */
#define IPV6_DSTOPTS            23 /* bool; destination option */
#define IPV6_RTHDR              24 /* bool; routing header */
#define IPV6_PKTOPTIONS         25 /* buf/cmsghdr; set/get IPv6 options */

#define IPV6_CHECKSUM           26 /* int; checksum offset for raw socket */
#define IPV6_V6ONLY             27 /* bool; only bind INET6 at wildcard bind */
#ifndef _KERNEL
#define IPV6_BINDV6ONLY         IPV6_V6ONLY
#endif

#if 1 /* IPSEC */
#define IPV6_IPSEC_POLICY       28 /* struct; get/set security policy */
#endif
#define IPV6_FAITH              29 /* bool; accept FAITH'ed connections */

#if 1 /* IPV6FIREWALL */
#define IPV6_FW_ADD             30 /* add a firewall rule to chain */
#define IPV6_FW_DEL             31 /* delete a firewall rule from chain */
#define IPV6_FW_FLUSH           32 /* flush firewall rule chain */
#define IPV6_FW_ZERO            33 /* clear single/all firewall counter(s) */
#define IPV6_FW_GET             34 /* get entire firewall rule chain */
#endif

/* to define items, should talk with KAME guys first, for *BSD compatibility */

#define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
#define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
#define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */

/*
 * Defaults and limits for options
 */
#define IPV6_DEFAULT_MULTICAST_HOPS 1   /* normally limit m'casts to 1 hop */
#define IPV6_DEFAULT_MULTICAST_LOOP 1   /* normally hear sends if a member */

/*
 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 */
struct ipv6_mreq {
        struct in6_addr ipv6mr_multiaddr;
        unsigned int    ipv6mr_interface;
};

/*
 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
 */
struct in6_pktinfo {
        struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
        unsigned int    ipi6_ifindex;   /* send/recv interface index */
};

/*
 * Argument for IPV6_PORTRANGE:
 * - which range to search when port is unspecified at bind() or connect()
 */
#define IPV6_PORTRANGE_DEFAULT  0       /* default range */
#define IPV6_PORTRANGE_HIGH     1       /* "high" - request firewall bypass */
#define IPV6_PORTRANGE_LOW      2       /* "low" - vouchsafe security */

#ifndef _XOPEN_SOURCE
/*
 * Definitions for inet6 sysctl operations.
 *
 * Third level is protocol number.
 * Fourth level is desired variable within that protocol.
 */
#define IPV6PROTO_MAXID (IPPROTO_PIM + 1)       /* don't list to IPV6PROTO_MAX */

#define CTL_IPV6PROTO_NAMES { \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, \
        { "tcp6", CTLTYPE_NODE }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { "udp6", CTLTYPE_NODE }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, \
        { "ip6", CTLTYPE_NODE }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, \
        { "ipsec6", CTLTYPE_NODE }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { "icmp6", CTLTYPE_NODE }, \
        { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { 0, 0 }, \
        { "pim6", CTLTYPE_NODE }, \
}

/*
 * Names for IP sysctl objects
 */
#define IPV6CTL_FORWARDING      1       /* act as router */
#define IPV6CTL_SENDREDIRECTS   2       /* may send redirects when forwarding*/
#define IPV6CTL_DEFHLIM         3       /* default Hop-Limit */
#ifdef notyet
#define IPV6CTL_DEFMTU          4       /* default MTU */
#endif
#define IPV6CTL_FORWSRCRT       5       /* forward source-routed dgrams */
#define IPV6CTL_STATS           6       /* stats */
#define IPV6CTL_MRTSTATS        7       /* multicast forwarding stats */
#define IPV6CTL_MRTPROTO        8       /* multicast routing protocol */
#define IPV6CTL_MAXFRAGPACKETS  9       /* max packets reassembly queue */
#define IPV6CTL_SOURCECHECK     10      /* verify source route and intf */
#define IPV6CTL_SOURCECHECK_LOGINT 11   /* minimume logging interval */
#define IPV6CTL_ACCEPT_RTADV    12
#define IPV6CTL_KEEPFAITH       13
#define IPV6CTL_LOG_INTERVAL    14
#define IPV6CTL_HDRNESTLIMIT    15
#define IPV6CTL_DAD_COUNT       16
#define IPV6CTL_AUTO_FLOWLABEL  17
#define IPV6CTL_DEFMCASTHLIM    18
#define IPV6CTL_GIF_HLIM        19      /* default HLIM for gif encap packet */
#define IPV6CTL_KAME_VERSION    20
#define IPV6CTL_USE_DEPRECATED  21      /* use deprecated addr (RFC2462 5.5.4) */
#define IPV6CTL_RR_PRUNE        22      /* walk timer for router renumbering */
#if 0   /* obsolete */
#define IPV6CTL_MAPPED_ADDR     23
#endif
#define IPV6CTL_V6ONLY          24
#define IPV6CTL_RTEXPIRE        25      /* cloned route expiration time */
#define IPV6CTL_RTMINEXPIRE     26      /* min value for expiration time */
#define IPV6CTL_RTMAXCACHE      27      /* trigger level for dynamic expire */

#define IPV6CTL_USETEMPADDR     32      /* use temporary addresses (RFC3041) */
#define IPV6CTL_TEMPPLTIME      33      /* preferred lifetime for tmpaddrs */
#define IPV6CTL_TEMPVLTIME      34      /* valid lifetime for tmpaddrs */
#define IPV6CTL_AUTO_LINKLOCAL  35      /* automatic link-local addr assign */
#define IPV6CTL_RIP6STATS       36      /* raw_ip6 stats */

/* New entries should be added here from current IPV6CTL_MAXID value. */
/* to define items, should talk with KAME guys first, for *BSD compatibility */
#define IPV6CTL_MAXID           37

#endif /* !_XOPEN_SOURCE */

/*
 * Redefinition of mbuf flags
 */
#define M_AUTHIPHDR     M_PROTO2
#define M_DECRYPTED     M_PROTO3
#define M_LOOP          M_PROTO4
#define M_AUTHIPDGM     M_PROTO5

#ifdef _KERNEL
struct cmsghdr;

int     in6_cksum __P((struct mbuf *, uint8_t, uint32_t, uint32_t));
int     in6_localaddr __P((struct in6_addr *));
int     in6_addrscope __P((struct in6_addr *));
struct  in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *));
struct  in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
extern void in6_if_up __P((struct ifnet *));
struct sockaddr;
extern  u_char  ip6_protox[];

void    in6_sin6_2_sin __P((struct sockaddr_in *sin,
                            struct sockaddr_in6 *sin6));
void    in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
                                 struct sockaddr_in6 *sin6));
void    in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
void    in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));

#define satosin6(sa)    ((struct sockaddr_in6 *)(sa))
#define sin6tosa(sin6)  ((struct sockaddr *)(sin6))
#define ifatoia6(ifa)   ((struct in6_ifaddr *)(ifa))

extern int      (*faithprefix_p)(struct in6_addr *);
#endif /* _KERNEL */

__BEGIN_DECLS
struct cmsghdr;

extern int inet6_option_space __P((int));
extern int inet6_option_init __P((void *, struct cmsghdr **, int));
extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *,
        int, int));
extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **));
extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int));

extern size_t inet6_rthdr_space __P((int, int));
extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
                unsigned int));
extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
#if 0 /* not implemented yet */
extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
#endif
extern int inet6_rthdr_segments __P((const struct cmsghdr *));
extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));

extern int inet6_opt_init __P((void *, size_t));
extern int inet6_opt_append __P((void *, size_t, int, uint8_t,
                                 size_t, uint8_t, void **));
extern int inet6_opt_finish __P((void *, size_t, int));
extern int inet6_opt_set_val __P((void *, size_t, void *, int));

extern int inet6_opt_next __P((void *, size_t, int, uint8_t *,
                               size_t *, void **));
extern int inet6_opt_find __P((void *, size_t, int, uint8_t,
                          size_t *, void **));
extern int inet6_opt_get_val __P((void *, size_t, void *, int));
extern size_t inet6_rth_space __P((int, int));
extern void *inet6_rth_init __P((void *, int, int, int));
extern int inet6_rth_add __P((void *, const struct in6_addr *));
extern int inet6_rth_reverse __P((const void *, void *));
extern int inet6_rth_segments __P((const void *));
extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
__END_DECLS

#endif /* !_NETINET6_IN6_H_ */