LCOM1920-T02G10

/*        $NetBSD: in6_var.h,v 1.74 2015/09/06 06:01:01 dholland Exp $        */

/*        $KAME: in6_var.h,v 1.81 2002/06/08 11:16:51 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) 1985, 1986, 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.

 * 3. 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_var.h        8.1 (Berkeley) 6/10/93

 */

#ifndef _NETINET6_IN6_VAR_H_

#define _NETINET6_IN6_VAR_H_

#include <sys/callout.h>

#include <sys/ioccom.h>

/*

 * Interface address, Internet version.  One of these structures

 * is allocated for each interface with an Internet address.

 * The ifaddr structure contains the protocol-independent part

 * of the structure and is assumed to be first.

 */

/*

 * pltime/vltime are just for future reference (required to implements 2

 * hour rule for hosts).  they should never be modified by nd6_timeout or

 * anywhere else.

 *        userland -> kernel: accept pltime/vltime

 *        kernel -> userland: throw up everything

 *        in kernel: modify preferred/expire only

 */

struct in6_addrlifetime {

        time_t ia6t_expire;        /* valid lifetime expiration time */

        time_t ia6t_preferred;        /* preferred lifetime expiration time */

        u_int32_t ia6t_vltime;        /* valid lifetime */

        u_int32_t ia6t_pltime;        /* prefix lifetime */

};

struct nd_ifinfo;

struct in6_ifextra {

        struct in6_ifstat *in6_ifstat;

        struct icmp6_ifstat *icmp6_ifstat;

        struct nd_ifinfo *nd_ifinfo;

        struct scope6_id *scope6_id;

        int nprefixes;

        int ndefrouters;

};

LIST_HEAD(in6_multihead, in6_multi);

struct        in6_ifaddr {

        struct        ifaddr ia_ifa;                /* protocol-independent info */

#define        ia_ifp                ia_ifa.ifa_ifp

#define ia_flags        ia_ifa.ifa_flags

        struct        sockaddr_in6 ia_addr;        /* interface address */

        struct        sockaddr_in6 ia_net;        /* network number of interface */

        struct        sockaddr_in6 ia_dstaddr; /* space for destination addr */

        struct        sockaddr_in6 ia_prefixmask; /* prefix mask */

        u_int32_t ia_plen;                /* prefix length */

        struct        in6_ifaddr *ia_next;        /* next in6 list of IP6 addresses */

        struct        in6_multihead ia6_multiaddrs;

                                        /* list of multicast addresses */

        int        ia6_flags;

        struct in6_addrlifetime ia6_lifetime;

        time_t        ia6_createtime; /* the creation time of this address, which is

                                 * currently used for temporary addresses only.

                                 */

        time_t        ia6_updatetime;

        /* back pointer to the ND prefix (for autoconfigured addresses only) */

        struct nd_prefix *ia6_ndpr;

        /* multicast addresses joined from the kernel */

        LIST_HEAD(, in6_multi_mship) ia6_memberships;

};

/* control structure to manage address selection policy */

struct in6_addrpolicy {

        struct sockaddr_in6 addr; /* prefix address */

        struct sockaddr_in6 addrmask; /* prefix mask */

        int preced;                /* precedence */

        int label;                /* matching label */

        u_quad_t use;                /* statistics */

};

/*

 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).

 */

struct in6_ifstat {

        u_quad_t ifs6_in_receive;        /* # of total input datagram */

        u_quad_t ifs6_in_hdrerr;        /* # of datagrams with invalid hdr */

        u_quad_t ifs6_in_toobig;        /* # of datagrams exceeded MTU */

        u_quad_t ifs6_in_noroute;        /* # of datagrams with no route */

        u_quad_t ifs6_in_addrerr;        /* # of datagrams with invalid dst */

        u_quad_t ifs6_in_protounknown;        /* # of datagrams with unknown proto */

                                        /* NOTE: increment on final dst if */

        u_quad_t ifs6_in_truncated;        /* # of truncated datagrams */

        u_quad_t ifs6_in_discard;        /* # of discarded datagrams */

                                        /* NOTE: fragment timeout is not here */

        u_quad_t ifs6_in_deliver;        /* # of datagrams delivered to ULP */

                                        /* NOTE: increment on final dst if */

        u_quad_t ifs6_out_forward;        /* # of datagrams forwarded */

                                        /* NOTE: increment on outgoing if */

        u_quad_t ifs6_out_request;        /* # of outgoing datagrams from ULP */

                                        /* NOTE: does not include forwrads */

        u_quad_t ifs6_out_discard;        /* # of discarded datagrams */

        u_quad_t ifs6_out_fragok;        /* # of datagrams fragmented */

        u_quad_t ifs6_out_fragfail;        /* # of datagrams failed on fragment */

        u_quad_t ifs6_out_fragcreat;        /* # of fragment datagrams */

                                        /* NOTE: this is # after fragment */

        u_quad_t ifs6_reass_reqd;        /* # of incoming fragmented packets */

                                        /* NOTE: increment on final dst if */

        u_quad_t ifs6_reass_ok;                /* # of reassembled packets */

                                        /* NOTE: this is # after reass */

                                        /* NOTE: increment on final dst if */

        u_quad_t ifs6_reass_fail;        /* # of reass failures */

                                        /* NOTE: may not be packet count */

                                        /* NOTE: increment on final dst if */

        u_quad_t ifs6_in_mcast;                /* # of inbound multicast datagrams */

        u_quad_t ifs6_out_mcast;        /* # of outbound multicast datagrams */

};

/*

 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.

 * XXX: I'm not sure if this file is the right place for this structure...

 */

struct icmp6_ifstat {

        /*

         * Input statistics

         */

        /* ipv6IfIcmpInMsgs, total # of input messages */

        u_quad_t ifs6_in_msg;

        /* ipv6IfIcmpInErrors, # of input error messages */

        u_quad_t ifs6_in_error;

        /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */

        u_quad_t ifs6_in_dstunreach;

        /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */

        u_quad_t ifs6_in_adminprohib;

        /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */

        u_quad_t ifs6_in_timeexceed;

        /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */

        u_quad_t ifs6_in_paramprob;

        /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */

        u_quad_t ifs6_in_pkttoobig;

        /* ipv6IfIcmpInEchos, # of input echo requests */

        u_quad_t ifs6_in_echo;

        /* ipv6IfIcmpInEchoReplies, # of input echo replies */

        u_quad_t ifs6_in_echoreply;

        /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */

        u_quad_t ifs6_in_routersolicit;

        /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */

        u_quad_t ifs6_in_routeradvert;

        /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */

        u_quad_t ifs6_in_neighborsolicit;

        /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */

        u_quad_t ifs6_in_neighboradvert;

        /* ipv6IfIcmpInRedirects, # of input redirects */

        u_quad_t ifs6_in_redirect;

        /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */

        u_quad_t ifs6_in_mldquery;

        /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */

        u_quad_t ifs6_in_mldreport;

        /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */

        u_quad_t ifs6_in_mlddone;

        /*

         * Output statistics. We should solve unresolved routing problem...

         */

        /* ipv6IfIcmpOutMsgs, total # of output messages */

        u_quad_t ifs6_out_msg;

        /* ipv6IfIcmpOutErrors, # of output error messages */

        u_quad_t ifs6_out_error;

        /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */

        u_quad_t ifs6_out_dstunreach;

        /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */

        u_quad_t ifs6_out_adminprohib;

        /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */

        u_quad_t ifs6_out_timeexceed;

        /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */

        u_quad_t ifs6_out_paramprob;

        /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */

        u_quad_t ifs6_out_pkttoobig;

        /* ipv6IfIcmpOutEchos, # of output echo requests */

        u_quad_t ifs6_out_echo;

        /* ipv6IfIcmpOutEchoReplies, # of output echo replies */

        u_quad_t ifs6_out_echoreply;

        /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */

        u_quad_t ifs6_out_routersolicit;

        /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */

        u_quad_t ifs6_out_routeradvert;

        /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */

        u_quad_t ifs6_out_neighborsolicit;

        /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */

        u_quad_t ifs6_out_neighboradvert;

        /* ipv6IfIcmpOutRedirects, # of output redirects */

        u_quad_t ifs6_out_redirect;

        /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */

        u_quad_t ifs6_out_mldquery;

        /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */

        u_quad_t ifs6_out_mldreport;

        /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */

        u_quad_t ifs6_out_mlddone;

};

/*

 * If you make changes that change the size of in6_ifreq,

 * make sure you fix compat/netinet6/in6_var.h

 */

struct        in6_ifreq {

        char        ifr_name[IFNAMSIZ];

        union {

                struct        sockaddr_in6 ifru_addr;

                struct        sockaddr_in6 ifru_dstaddr;

                short        ifru_flags;

                int        ifru_flags6;

                int        ifru_metric;

                void *        ifru_data;

                struct in6_addrlifetime ifru_lifetime;

                struct in6_ifstat ifru_stat;

                struct icmp6_ifstat ifru_icmp6stat;

        } ifr_ifru;

};

struct        in6_aliasreq {

        char        ifra_name[IFNAMSIZ];

        struct        sockaddr_in6 ifra_addr;

        struct        sockaddr_in6 ifra_dstaddr;

        struct        sockaddr_in6 ifra_prefixmask;

        int        ifra_flags;

        struct in6_addrlifetime ifra_lifetime;

};

/* prefix type macro */

#define IN6_PREFIX_ND        1

#define IN6_PREFIX_RR        2

/*

 * prefix related flags passed between kernel(NDP related part) and

 * user land command(ifconfig) and daemon(rtadvd).

 * Note: We originally intended to use prf_ra{} only within in6_prflags{}, but

 * it was (probably unintentionally) used in nd6.h as well.  Since C++ does

 * not allow such a reference, prf_ra{} was then moved outside.  In general,

 * however, this structure should not be used directly.

 */

struct prf_ra {

        u_int32_t onlink : 1;

        u_int32_t autonomous : 1;

        u_int32_t router : 1;

        u_int32_t reserved : 5;

};

struct in6_prflags {

        struct prf_ra prf_ra;

        u_char prf_reserved1;

        u_short prf_reserved2;

        /* want to put this on 4byte offset */

        struct prf_rr {

                u_int32_t decrvalid : 1;

                u_int32_t decrprefd : 1;

                u_int32_t reserved : 6;

        } prf_rr;

        u_char prf_reserved3;

        u_short prf_reserved4;

};

struct  in6_prefixreq {

        char        ipr_name[IFNAMSIZ];

        u_char        ipr_origin;

        u_char        ipr_plen;

        u_int32_t ipr_vltime;

        u_int32_t ipr_pltime;

        struct in6_prflags ipr_flags;

        struct        sockaddr_in6 ipr_prefix;

};

#define PR_ORIG_RA        0

#define PR_ORIG_RR        1

#define PR_ORIG_STATIC        2

#define PR_ORIG_KERNEL        3

#define ipr_raf_onlink                ipr_flags.prf_ra.onlink

#define ipr_raf_auto                ipr_flags.prf_ra.autonomous

#define ipr_statef_onlink        ipr_flags.prf_state.onlink

#define ipr_rrf_decrvalid        ipr_flags.prf_rr.decrvalid

#define ipr_rrf_decrprefd        ipr_flags.prf_rr.decrprefd

struct        in6_rrenumreq {

        char        irr_name[IFNAMSIZ];

        u_char        irr_origin;

        u_char        irr_m_len;        /* match len for matchprefix */

        u_char        irr_m_minlen;        /* minlen for matching prefix */

        u_char        irr_m_maxlen;        /* maxlen for matching prefix */

        u_char        irr_u_uselen;        /* uselen for adding prefix */

        u_char        irr_u_keeplen;        /* keeplen from matching prefix */

        struct irr_raflagmask {

                u_int32_t onlink : 1;

                u_int32_t autonomous : 1;

                u_int32_t reserved : 6;

        } irr_raflagmask;

        u_int32_t irr_vltime;

        u_int32_t irr_pltime;

        struct in6_prflags irr_flags;

        struct        sockaddr_in6 irr_matchprefix;

        struct        sockaddr_in6 irr_useprefix;

};

#define irr_raf_mask_onlink        irr_raflagmask.onlink

#define irr_raf_mask_auto        irr_raflagmask.autonomous

#define irr_raf_mask_reserved        irr_raflagmask.reserved

#define irr_raf_onlink                irr_flags.prf_ra.onlink

#define irr_raf_auto                irr_flags.prf_ra.autonomous

#define irr_statef_onlink        irr_flags.prf_state.onlink

#define irr_rrf                        irr_flags.prf_rr

#define irr_rrf_decrvalid        irr_flags.prf_rr.decrvalid

#define irr_rrf_decrprefd        irr_flags.prf_rr.decrprefd

/*

 * Given a pointer to an in6_ifaddr (ifaddr),

 * return a pointer to the addr as a sockaddr_in6

 */

#define IA6_IN6(ia)        (&((ia)->ia_addr.sin6_addr))

#define IA6_DSTIN6(ia)        (&((ia)->ia_dstaddr.sin6_addr))

#define IA6_MASKIN6(ia)        (&((ia)->ia_prefixmask.sin6_addr))

#define IA6_SIN6(ia)        (&((ia)->ia_addr))

#define IA6_DSTSIN6(ia)        (&((ia)->ia_dstaddr))

#define IFA_IN6(x)        (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)

#define IFA_DSTIN6(x)        (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)

#ifdef _KERNEL

#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m)        (        \

        (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \

        (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \

        (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \

        (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )

#endif

#define SIOCSIFADDR_IN6                 _IOW('i', 12, struct in6_ifreq)

#define SIOCGIFADDR_IN6                _IOWR('i', 33, struct in6_ifreq)

#ifdef _KERNEL

/*

 * SIOCSxxx ioctls should be unused (see comments in in6.c), but

 * we do not shift numbers for binary compatibility.

 */

#define SIOCSIFDSTADDR_IN6         _IOW('i', 14, struct in6_ifreq)

#define SIOCSIFNETMASK_IN6         _IOW('i', 22, struct in6_ifreq)

#endif

#define SIOCGIFDSTADDR_IN6        _IOWR('i', 34, struct in6_ifreq)

#define SIOCGIFNETMASK_IN6        _IOWR('i', 37, struct in6_ifreq)

#define SIOCDIFADDR_IN6                 _IOW('i', 25, struct in6_ifreq)

/* 26 was OSIOCAIFADDR_IN6 */

/* 70 was OSIOCSIFPHYADDR_IN6 */

#define        SIOCGIFPSRCADDR_IN6        _IOWR('i', 71, struct in6_ifreq)

#define        SIOCGIFPDSTADDR_IN6        _IOWR('i', 72, struct in6_ifreq)

#define SIOCGIFAFLAG_IN6        _IOWR('i', 73, struct in6_ifreq)

#define SIOCGDRLST_IN6                _IOWR('i', 74, struct in6_drlist)

#define SIOCGPRLST_IN6                _IOWR('i', 75, struct in6_oprlist)

#ifdef _KERNEL

#define OSIOCGIFINFO_IN6        _IOWR('i', 76, struct in6_ondireq)

#endif

#define SIOCSNDFLUSH_IN6        _IOWR('i', 77, struct in6_ifreq)

#define SIOCGNBRINFO_IN6        _IOWR('i', 78, struct in6_nbrinfo)

#define SIOCSPFXFLUSH_IN6        _IOWR('i', 79, struct in6_ifreq)

#define SIOCSRTRFLUSH_IN6        _IOWR('i', 80, struct in6_ifreq)

/* 81 was old SIOCGIFALIFETIME_IN6 */

#if 0

/* withdrawn - do not reuse number 82 */

#define SIOCSIFALIFETIME_IN6        _IOWR('i', 82, struct in6_ifreq)

#endif

#define SIOCGIFSTAT_IN6                _IOWR('i', 83, struct in6_ifreq)

#define SIOCGIFSTAT_ICMP6        _IOWR('i', 84, struct in6_ifreq)

#define SIOCSDEFIFACE_IN6        _IOWR('i', 85, struct in6_ndifreq)

#define SIOCGDEFIFACE_IN6        _IOWR('i', 86, struct in6_ndifreq)

#define SIOCSIFINFO_FLAGS        _IOWR('i', 87, struct in6_ndireq) /* XXX */

#define SIOCSIFPREFIX_IN6        _IOW('i', 100, struct in6_prefixreq) /* set */

#define SIOCGIFPREFIX_IN6        _IOWR('i', 101, struct in6_prefixreq) /* get */

#define SIOCDIFPREFIX_IN6        _IOW('i', 102, struct in6_prefixreq) /* del */

#define SIOCAIFPREFIX_IN6        _IOW('i', 103, struct in6_rrenumreq) /* add */

#define SIOCCIFPREFIX_IN6        _IOW('i', 104, \

                                     struct in6_rrenumreq) /* change */

#define SIOCSGIFPREFIX_IN6        _IOW('i', 105, \

                                     struct in6_rrenumreq) /* set global */

#define SIOCGIFALIFETIME_IN6        _IOWR('i', 106, struct in6_ifreq)

#define SIOCAIFADDR_IN6                _IOW('i', 107, struct in6_aliasreq)

#define SIOCGIFINFO_IN6                _IOWR('i', 108, struct in6_ndireq)

#define SIOCSIFINFO_IN6                _IOWR('i', 109, struct in6_ndireq)

#define SIOCSIFPHYADDR_IN6      _IOW('i', 110, struct in6_aliasreq)

/* XXX: Someone decided to switch to 'u' here for unknown reasons! */

#define SIOCGETSGCNT_IN6        _IOWR('u', 106, \

                                      struct sioc_sg_req6) /* get s,g pkt cnt */

#define SIOCGETMIFCNT_IN6        _IOWR('u', 107, \

                                      struct sioc_mif_req6) /* get pkt cnt per if */

#define SIOCAADDRCTL_POLICY        _IOW('u', 108, struct in6_addrpolicy)

#define SIOCDADDRCTL_POLICY        _IOW('u', 109, struct in6_addrpolicy)

#define IN6_IFF_ANYCAST                0x01        /* anycast address */

#define IN6_IFF_TENTATIVE        0x02        /* tentative address */

#define IN6_IFF_DUPLICATED        0x04        /* DAD detected duplicate */

#define IN6_IFF_DETACHED        0x08        /* may be detached from the link */

#define IN6_IFF_DEPRECATED        0x10        /* deprecated address */

#define IN6_IFF_NODAD                0x20        /* don't perform DAD on this address

                                         * (used only at first SIOC* call)

                                         */

#define IN6_IFF_AUTOCONF        0x40        /* autoconfigurable address. */

#define IN6_IFF_TEMPORARY        0x80        /* temporary (anonymous) address. */

/* do not input/output */

#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)

#ifdef _KERNEL

#define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))

#define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))

#endif

#ifdef _KERNEL

#include <net/pktqueue.h>

extern pktqueue_t *ip6_pktq;

MALLOC_DECLARE(M_IP6OPT);

extern struct in6_ifaddr *in6_ifaddr;

#define in6_ifstat_inc(ifp, tag) \

do {                                                                \

        if (ifp)                                                \

                ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \

} while (/*CONSTCOND*/ 0)

extern const struct in6_addr zeroin6_addr;

extern const u_char inet6ctlerrmap[];

extern unsigned long in6_maxmtu;

extern bool in6_present;

/*

 * Macro for finding the internet address structure (in6_ifaddr) corresponding

 * to a given interface (ifnet structure).

 */

static inline struct in6_ifaddr *

ifp_to_ia6(struct ifnet *ifp)

{

        struct ifaddr *ifa;

        IFADDR_FOREACH(ifa, ifp) {

                if (ifa->ifa_addr == NULL)

                        continue;

                if (ifa->ifa_addr->sa_family == AF_INET6)

                        break;

        }

        return (struct in6_ifaddr *)ifa;

}

#define        IFP_TO_IA6(__ifp, __ia)                                \

do {                                                        \

        (__ia) = ifp_to_ia6((__ifp));                                \

} while (/*CONSTCOND*/0)

#endif /* _KERNEL */

/*

 * Multi-cast membership entry.  One for each group/ifp that a PCB

 * belongs to.

 */

struct in6_multi_mship {

        struct        in6_multi *i6mm_maddr;        /* Multicast address pointer */

        LIST_ENTRY(in6_multi_mship) i6mm_chain;  /* multicast options chain */

};

struct        in6_multi {

        LIST_ENTRY(in6_multi) in6m_entry; /* list glue */

        struct        in6_addr in6m_addr;        /* IP6 multicast address */

        struct        ifnet *in6m_ifp;        /* back pointer to ifnet */

        struct        in6_ifaddr *in6m_ia;        /* back pointer to in6_ifaddr */

        u_int        in6m_refcount;                /* # membership claims by sockets */

        u_int        in6m_state;                /* state of the membership */

        int        in6m_timer;                /* delay to send the 1st report */

        struct timeval in6m_timer_expire; /* when the timer expires */

        callout_t in6m_timer_ch;

};

#define IN6M_TIMER_UNDEF -1

#ifdef _KERNEL

/* flags to in6_update_ifa */

#define IN6_IFAUPDATE_DADDELAY        0x1 /* first time to configure an address */

/*

 * Structure used by macros below to remember position when stepping through

 * all of the in6_multi records.

 */

struct        in6_multistep {

        struct        in6_ifaddr *i_ia;

        struct        in6_multi *i_in6m;

};

/*

 * Macros for looking up the in6_multi record for a given IP6 multicast

 * address on a given interface. If no matching record is found, "in6m"

 * returns NULL.

 */

static inline struct in6_multi *

in6_lookup_multi(struct in6_addr *addr, struct ifnet *ifp)

{

        struct in6_multi *in6m;

        struct in6_ifaddr *ia;

        if ((ia = ifp_to_ia6(ifp)) == NULL)

                  return NULL;

        LIST_FOREACH(in6m, &ia->ia6_multiaddrs, in6m_entry) {

                if (IN6_ARE_ADDR_EQUAL(&in6m->in6m_addr, addr))

                        break;

        }

        return in6m;

}

#define IN6_LOOKUP_MULTI(__addr, __ifp, __in6m)                        \

/* struct in6_addr __addr; */                                        \

/* struct ifnet *__ifp; */                                        \

/* struct in6_multi *__in6m; */                                        \

do {                                                                \

        (__in6m) = in6_lookup_multi(&(__addr), (__ifp));        \

} while (/*CONSTCOND*/ 0)

/*

 * Macro to step through all of the in6_multi records, one at a time.

 * The current position is remembered in "step", which the caller must

 * provide.  IN6_FIRST_MULTI(), below, must be called to initialize "step"

 * and get the first record.  Both macros return a NULL "in6m" when there

 * are no remaining records.

 */

static inline struct in6_multi *

in6_next_multi(struct in6_multistep *step)

{

        struct in6_multi *in6m;

        if ((in6m = step->i_in6m) != NULL) {

                step->i_in6m = LIST_NEXT(in6m, in6m_entry);

                return in6m;

        }

        while (step->i_ia != NULL) {

                in6m = LIST_FIRST(&step->i_ia->ia6_multiaddrs);

                step->i_ia = step->i_ia->ia_next;

                if (in6m != NULL) {

                        step->i_in6m = LIST_NEXT(in6m, in6m_entry);

                        break;

                }

        }

        return in6m;

}

static inline struct in6_multi *

in6_first_multi(struct in6_multistep *step)

{

        step->i_ia = in6_ifaddr;

        step->i_in6m = NULL;

        return in6_next_multi(step);

}

#define IN6_NEXT_MULTI(__step, __in6m)                \

/* struct in6_multistep __step; */                \

/* struct in6_multi *__in6m; */                        \

do {                                                \

        (__in6m) = in6_next_multi(&(__step));        \

} while (/*CONSTCOND*/ 0)

#define IN6_FIRST_MULTI(__step, __in6m)                \

/* struct in6_multistep __step; */                \

/* struct in6_multi *__in6m */                        \

do {                                                \

        (__in6m) = in6_first_multi(&(__step));        \

} while (/*CONSTCOND*/ 0)

#if 0

/*

 * Macros for looking up the in6_multi_mship record for a given IP6 multicast

 * address on a given interface. If no matching record is found, "imm"

 * returns NULL.

 */

static inline struct in6_multi_mship *

in6_lookup_mship(struct in6_addr *addr, struct ifnet *ifp,

    struct ip6_moptions *imop)

{

        struct in6_multi_mship *imm;

        LIST_FOREACH(imm, &imop->im6o_memberships, i6mm_chain) {

                if (imm->i6mm_maddr->in6m_ifp != ifp)

                            continue;

                if (IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr,

                    addr))

                        break;

        }

        return imm;

}

#define IN6_LOOKUP_MSHIP(__addr, __ifp, __imop, __imm)                        \

/* struct in6_addr __addr; */                                                \

/* struct ifnet *__ifp; */                                                \

/* struct ip6_moptions *__imop */                                        \

/* struct in6_multi_mship *__imm; */                                        \

do {                                                                        \

        (__imm) = in6_lookup_mship(&(__addr), (__ifp), (__imop));        \

} while (/*CONSTCOND*/ 0)

#endif

struct        in6_multi *in6_addmulti(struct in6_addr *, struct ifnet *,

        int *, int);

void        in6_delmulti(struct in6_multi *);

struct in6_multi_mship *in6_joingroup(struct ifnet *, struct in6_addr *,

        int *, int);

int        in6_leavegroup(struct in6_multi_mship *);

int        in6_mask2len(struct in6_addr *, u_char *);

int        in6_control(struct socket *, u_long, void *, struct ifnet *);

int        in6_update_ifa(struct ifnet *, struct in6_aliasreq *,

        struct in6_ifaddr *, int);

void        in6_purgeaddr(struct ifaddr *);

void        in6_purgeif(struct ifnet *);

void        in6_savemkludge(struct in6_ifaddr *);

void        in6_setmaxmtu  (void);

int        in6_if2idlen  (struct ifnet *);

void        *in6_domifattach(struct ifnet *);

void        in6_domifdetach(struct ifnet *, void *);

void        in6_restoremkludge(struct in6_ifaddr *, struct ifnet *);

void        in6_ifremlocal(struct ifaddr *);

void        in6_ifaddlocal(struct ifaddr *);

void        in6_createmkludge(struct ifnet *);

void        in6_purgemkludge(struct ifnet *);

struct in6_ifaddr *in6ifa_ifpforlinklocal(const struct ifnet *, int);

struct in6_ifaddr *in6ifa_ifpwithaddr(const struct ifnet *,

    const struct in6_addr *);

char        *ip6_sprintf(const struct in6_addr *);

int        in6_matchlen(struct in6_addr *, struct in6_addr *);

int        in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int);

void        in6_prefixlen2mask(struct in6_addr *, int);

void        in6_purgeprefix(struct ifnet *);

int        ip6flow_fastforward(struct mbuf **); /* IPv6 fast forward routine */

int in6_src_ioctl(u_long, void *);

int        in6_is_addr_deprecated(struct sockaddr_in6 *);

struct in6pcb;

#endif /* _KERNEL */

#endif /* !_NETINET6_IN6_VAR_H_ */