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//==========================================================================

//

//      include/netinet6_in6_var.h

//

//      

//

//==========================================================================

//####BSDCOPYRIGHTBEGIN####

//

// -------------------------------------------

//

// Portions of this software may have been derived from OpenBSD or other sources,

// and are covered by the appropriate copyright disclaimers included herein.

//

// -------------------------------------------

//

//####BSDCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    gthomas

// Contributors: gthomas

// Date:         2000-01-10

// Purpose:      

// Description:  

//              

//

//####DESCRIPTIONEND####

//

//==========================================================================

/* $OpenBSD: in6_var.h,v 1.6 1999/12/10 10:04:28 angelos 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. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

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

 */

#ifndef _NETINET6_IN6_VAR_H_

#define _NETINET6_IN6_VAR_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: throuw 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  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 */

        LIST_HEAD(in6_multihead, in6_multi) ia6_multiaddrs;

                                        /* list of multicast addresses */

        int     ia6_flags;

        struct in6_addrlifetime ia6_lifetime;   /* NULL = infty */

        struct ifprefix *ia6_ifpr; /* back pointer to ifprefix */

};

/*

 * 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;

};

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;

                caddr_t 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).

 */

struct in6_prflags {

        struct prf_ra {

                u_char onlink : 1;

                u_char autonomous : 1;

                u_char reserved : 6;

        } prf_ra;

        u_char prf_reserved1;

        u_short prf_reserved2;

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

        struct prf_rr {

                u_char decrvalid : 1;

                u_char decrprefd : 1;

                u_char 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_char onlink : 1;

                u_char autonomous : 1;

                u_char 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)

#define IFPR_IN6(x)     (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->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)

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

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

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

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

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

#define SIOCAIFADDR_IN6          _IOW('i', 26, struct in6_aliasreq)

#define SIOCSIFPHYADDR_IN6       _IOW('i', 70, struct in6_aliasreq)

#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_prlist)

#define SIOCGIFINFO_IN6         _IOWR('i', 76, struct in6_ndireq)

#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)

#define SIOCGIFALIFETIME_IN6    _IOWR('i', 81, struct in6_ifreq)

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

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

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

#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 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 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 */

/* do not input/output */

#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)

#ifdef _KERNEL

extern struct in6_ifaddr *in6_ifaddr;

extern struct in6_ifstat **in6_ifstat;

extern size_t in6_ifstatmax;

extern struct icmp6stat icmp6stat;

extern struct icmp6_ifstat **icmp6_ifstat;

extern size_t icmp6_ifstatmax;

#define in6_ifstat_inc(ifp, tag) \

do {                                                            \

        if ((ifp) && (ifp)->if_index <= if_index                \

         && (ifp)->if_index < in6_ifstatmax                     \

         && in6_ifstat && in6_ifstat[(ifp)->if_index]) {        \

                in6_ifstat[(ifp)->if_index]->tag++;             \

        }                                                       \

} while (0)

extern struct ifqueue ip6intrq;         /* IP6 packet input queue */

extern struct in6_addr zeroin6_addr;

extern u_char inet6ctlerrmap[];

extern unsigned long in6_maxmtu;

/*

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

 * to a given interface (ifnet structure).

 */

#define IFP_TO_IA6(ifp, ia)                             \

/* struct ifnet *ifp; */                                \

/* struct in6_ifaddr *ia; */                            \

do {                                                                    \

        struct ifaddr *ifa;                                             \

        for (ifa = (ifp)->if_addrlist.tqh_first; ifa; ifa = ifa->ifa_list.tqe_next) {   \

                if (!ifa->ifa_addr)                                     \

                        continue;                                       \

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

                        break;                                          \

        }                                                               \

        (ia) = (struct in6_ifaddr *)ifa;                                \

} while (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 */

        u_int   in6m_timer;             /* MLD6 listener report timer */

};

#ifdef _KERNEL

/*

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

 * all of eht 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 NLL.

 */

#define IN6_LOOKUP_MULTI(addr, ifp, in6m)                       \

/* struct in6_addr addr; */                                     \

/* struct ifnet *ifp; */                                        \

/* struct in6_multi *in6m; */                                   \

do {                                                            \

        register struct in6_ifaddr *ia;                         \

                                                                \

        IFP_TO_IA6((ifp), ia);                                  \

        if (ia == NULL)                                         \

                (in6m) = NULL;                                  \

        else                                                    \

                for ((in6m) = ia->ia6_multiaddrs.lh_first;      \

                     (in6m) != NULL &&                          \

                     !IN6_ARE_ADDR_EQUAL(&(in6m)->in6m_addr, &(addr));  \

                     (in6m) = in6m->in6m_entry.le_next)         \

                        continue;                               \

} while (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.

 */

#define IN6_NEXT_MULTI(step, in6m)                                      \

/* struct in6_multistep step; */                                        \

/* struct in6_multi *in6m; */                                           \

do {                                                                    \

        if (((in6m) = (step).i_in6m) != NULL)                           \

                (step).i_in6m = (in6m)->in6m_entry.le_next;             \

        else                                                            \

                while ((step).i_ia != NULL) {                           \

                        (in6m) = (step).i_ia->ia6_multiaddrs.lh_first;  \

                        (step).i_ia = (step).i_ia->ia_next;             \

                        if ((in6m) != NULL) {                           \

                                (step).i_in6m = (in6m)->in6m_entry.le_next; \

                                break;                                  \

                        }                                               \

                }                                                       \

} while (0)

#define IN6_FIRST_MULTI(step, in6m)             \

/* struct in6_multistep step; */                \

/* struct in6_multi *in6m */                    \

do {                                            \

        (step).i_ia = in6_ifaddr;               \

        (step).i_in6m = NULL;                   \

        IN6_NEXT_MULTI((step), (in6m));         \

} while (0)

int     in6_ifinit __P((struct ifnet *,

                        struct in6_ifaddr *, struct sockaddr_in6 *, int));

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

                                     int *));

void    in6_delmulti __P((struct in6_multi *));

void    in6_ifscrub __P((struct ifnet *, struct in6_ifaddr *));

extern int in6_ifindex2scopeid __P((int));

extern int in6_mask2len __P((struct in6_addr *));

extern void in6_len2mask __P((struct in6_addr *, int));

int     in6_control __P((struct socket *,

                         u_long, caddr_t, struct ifnet *, struct proc *));

void    in6_savemkludge __P((struct in6_ifaddr *));

void    in6_setmaxmtu   __P((void));

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

struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *));

struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *,

                                             struct in6_addr *));

char    *ip6_sprintf __P((struct in6_addr *));

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

int     in6_are_prefix_equal __P((struct in6_addr *p1, struct in6_addr *p2,

                                  int len));

void    in6_prefixlen2mask __P((struct in6_addr *maskp, int len));

int     in6_prefix_ioctl __P((struct socket *so, u_long cmd, caddr_t data,

                              struct ifnet *ifp));

int     in6_prefix_add_ifid __P((int iilen, struct in6_ifaddr *ia));

void    in6_prefix_remove_ifid __P((int iilen, struct in6_ifaddr *ia));

#endif /* _KERNEL */

#endif /* _NETINET6_IN6_VAR_H_ */