    /*
     * Copyright (c) 1993, 1994, 1997
     *	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: (1) source code distributions
     * retain the above copyright notice and this paragraph in its entirety, (2)
     * distributions including binary code include the above copyright notice and
     * this paragraph in its entirety in the documentation or other materials
     * provided with the distribution, and (3) all advertising materials mentioning
     * features or use of this software display the following acknowledgement:
     * ``This product includes software developed by the University of California,
     * Lawrence Berkeley Laboratory and its contributors.'' 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
     * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     *
     * @(#) $Header: /tcpdump/master/libpcap/Win32/Include/ip6_misc.h,v 1.5 2006-01-22 18:02:18 gianluca Exp $ (LBL)
     */

    /*
     * This file contains a collage of declarations for IPv6 from FreeBSD not present in Windows
     */

    #include <winsock2.h>

    #include <ws2tcpip.h>

    #ifndef __MINGW32__
    #define	IN_MULTICAST(a)		IN_CLASSD(a)
    #endif

    #define	IN_EXPERIMENTAL(a)	((((u_int32_t) (a)) & 0xf0000000) == 0xf0000000)

    #define	IN_LOOPBACKNET		127

    #if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)
    /* IPv6 address */
    struct in6_addr
      {
        union
          {
    	u_int8_t		u6_addr8[16];
    	u_int16_t	u6_addr16[8];
    	u_int32_t	u6_addr32[4];
          } in6_u;
    #define s6_addr			in6_u.u6_addr8
    #define s6_addr16		in6_u.u6_addr16
    #define s6_addr32		in6_u.u6_addr32
    #define s6_addr64		in6_u.u6_addr64
      };

    #define IN6ADDR_ANY_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
    #define IN6ADDR_LOOPBACK_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }
    #endif /* __MINGW32__ */

    #if (defined _MSC_VER) || (defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF))
    typedef unsigned short	sa_family_t;
    #endif

    #if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)

    #define	__SOCKADDR_COMMON(sa_prefix) \
      sa_family_t sa_prefix##family

    /* Ditto, for IPv6.  */
    struct sockaddr_in6
      {
        __SOCKADDR_COMMON (sin6_);
        u_int16_t sin6_port;		/* Transport layer port # */
        u_int32_t sin6_flowinfo;	/* IPv6 flow information */
        struct in6_addr sin6_addr;	/* IPv6 address */
      };

    #define IN6_IS_ADDR_V4MAPPED(a) \
    	((((u_int32_t *) (a))[0] == 0) && (((u_int32_t *) (a))[1] == 0) && \
    	 (((u_int32_t *) (a))[2] == htonl (0xffff)))

    #define IN6_IS_ADDR_MULTICAST(a) (((u_int8_t *) (a))[0] == 0xff)

    #define IN6_IS_ADDR_LINKLOCAL(a) \
    	((((u_int32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000))

    #define IN6_IS_ADDR_LOOPBACK(a) \
    	(((u_int32_t *) (a))[0] == 0 && ((u_int32_t *) (a))[1] == 0 && \
    	 ((u_int32_t *) (a))[2] == 0 && ((u_int32_t *) (a))[3] == htonl (1))
    #endif /* __MINGW32__ */

    #define ip6_vfc   ip6_ctlun.ip6_un2_vfc
    #define ip6_flow  ip6_ctlun.ip6_un1.ip6_un1_flow
    #define ip6_plen  ip6_ctlun.ip6_un1.ip6_un1_plen
    #define ip6_nxt   ip6_ctlun.ip6_un1.ip6_un1_nxt
    #define ip6_hlim  ip6_ctlun.ip6_un1.ip6_un1_hlim
    #define ip6_hops  ip6_ctlun.ip6_un1.ip6_un1_hlim

    #define nd_rd_type               nd_rd_hdr.icmp6_type
    #define nd_rd_code               nd_rd_hdr.icmp6_code
    #define nd_rd_cksum              nd_rd_hdr.icmp6_cksum
    #define nd_rd_reserved           nd_rd_hdr.icmp6_data32[0]

    /*
     *	IPV6 extension headers
     */
    #define IPPROTO_HOPOPTS		0	/* IPv6 hop-by-hop options	*/
    #define IPPROTO_IPV6		41  /* IPv6 header.  */
    #define IPPROTO_ROUTING		43	/* IPv6 routing header		*/
    #define IPPROTO_FRAGMENT	44	/* IPv6 fragmentation header	*/
    #define IPPROTO_ESP		50	/* encapsulating security payload */
    #define IPPROTO_AH		51	/* authentication header	*/
    #define IPPROTO_ICMPV6		58	/* ICMPv6			*/
    #define IPPROTO_NONE		59	/* IPv6 no next header		*/
    #define IPPROTO_DSTOPTS		60	/* IPv6 destination options	*/
    #define IPPROTO_PIM			103 /* Protocol Independent Multicast.  */

    #define	 IPV6_RTHDR_TYPE_0 0

    /* Option types and related macros */
    #define IP6OPT_PAD1		0x00	/* 00 0 00000 */
    #define IP6OPT_PADN		0x01	/* 00 0 00001 */
    #define IP6OPT_JUMBO		0xC2	/* 11 0 00010 = 194 */
    #define IP6OPT_JUMBO_LEN	6
    #define IP6OPT_ROUTER_ALERT	0x05	/* 00 0 00101 */

    #define IP6OPT_RTALERT_LEN	4
    #define IP6OPT_RTALERT_MLD	0	/* Datagram contains an MLD message */
    #define IP6OPT_RTALERT_RSVP	1	/* Datagram contains an RSVP message */
    #define IP6OPT_RTALERT_ACTNET	2 	/* contains an Active Networks msg */
    #define IP6OPT_MINLEN		2

    #define IP6OPT_BINDING_UPDATE	0xc6	/* 11 0 00110 */
    #define IP6OPT_BINDING_ACK	0x07	/* 00 0 00111 */
    #define IP6OPT_BINDING_REQ	0x08	/* 00 0 01000 */
    #define IP6OPT_HOME_ADDRESS	0xc9	/* 11 0 01001 */
    #define IP6OPT_EID		0x8a	/* 10 0 01010 */

    #define IP6OPT_TYPE(o)		((o) & 0xC0)
    #define IP6OPT_TYPE_SKIP	0x00
    #define IP6OPT_TYPE_DISCARD	0x40
    #define IP6OPT_TYPE_FORCEICMP	0x80
    #define IP6OPT_TYPE_ICMP	0xC0

    #define IP6OPT_MUTABLE		0x20

    #if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)
    #ifndef EAI_ADDRFAMILY
    struct addrinfo {
    	int	ai_flags;	/* AI_PASSIVE, AI_CANONNAME */
    	int	ai_family;	/* PF_xxx */
    	int	ai_socktype;	/* SOCK_xxx */
    	int	ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
    	size_t	ai_addrlen;	/* length of ai_addr */
    	char	*ai_canonname;	/* canonical name for hostname */
    	struct sockaddr *ai_addr;	/* binary address */
    	struct addrinfo *ai_next;	/* next structure in linked list */
    };
    #endif
    #endif /* __MINGW32__ */

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