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#ifndef _IPV6_H

#define _IPV6_H

#include <linux/types.h>

#include <linux/in6.h>

#include <asm/byteorder.h>

/* The latest drafts declared increase in minimal mtu up to 1280. */

#define IPV6_MIN_MTU    1280

/*

 *      Advanced API

 *      source interface/address selection, source routing, etc...

 *      *under construction*

 */

struct in6_pktinfo {

        struct in6_addr ipi6_addr;

        int             ipi6_ifindex;

};

struct ip6_mtuinfo {

        struct sockaddr_in6     ip6m_addr;

        __u32                   ip6m_mtu;

};

struct in6_ifreq {

        struct in6_addr ifr6_addr;

        __u32           ifr6_prefixlen;

        int             ifr6_ifindex;

};

#define IPV6_SRCRT_STRICT       0x01    /* Deprecated; will be removed */

#define IPV6_SRCRT_TYPE_0       0        /* Deprecated; will be removed */

#define IPV6_SRCRT_TYPE_2       2       /* IPv6 type 2 Routing Header   */

/*

 *      routing header

 */

struct ipv6_rt_hdr {

        __u8            nexthdr;

        __u8            hdrlen;

        __u8            type;

        __u8            segments_left;

        /*

         *      type specific data

         *      variable length field

         */

};

struct ipv6_opt_hdr {

        __u8            nexthdr;

        __u8            hdrlen;

        /*

         * TLV encoded option data follows.

         */

} __attribute__((packed));      /* required for some archs */

#define ipv6_destopt_hdr ipv6_opt_hdr

#define ipv6_hopopt_hdr  ipv6_opt_hdr

/* Router Alert option values (RFC2711) */

#define IPV6_OPT_ROUTERALERT_MLD        0x0000  /* MLD(RFC2710) */

/*

 *      routing header type 0 (used in cmsghdr struct)

 */

struct rt0_hdr {

        struct ipv6_rt_hdr      rt_hdr;

        __u32                   reserved;

        struct in6_addr         addr[0];

#define rt0_type                rt_hdr.type

};

/*

 *      routing header type 2

 */

struct rt2_hdr {

        struct ipv6_rt_hdr      rt_hdr;

        __u32                   reserved;

        struct in6_addr         addr;

#define rt2_type                rt_hdr.type

};

/*

 *      home address option in destination options header

 */

struct ipv6_destopt_hao {

        __u8                    type;

        __u8                    length;

        struct in6_addr         addr;

} __attribute__((packed));

/*

 *      IPv6 fixed header

 *

 *      BEWARE, it is incorrect. The first 4 bits of flow_lbl

 *      are glued to priority now, forming "class".

 */

struct ipv6hdr {

#if defined(__LITTLE_ENDIAN_BITFIELD)

        __u8                    priority:4,

                                version:4;

#elif defined(__BIG_ENDIAN_BITFIELD)

        __u8                    version:4,

                                priority:4;

#else

#error  "Please fix <asm/byteorder.h>"

#endif

        __u8                    flow_lbl[3];

        __be16                  payload_len;

        __u8                    nexthdr;

        __u8                    hop_limit;

        struct  in6_addr        saddr;

        struct  in6_addr        daddr;

};

/* index values for the variables in ipv6_devconf */

enum {

        DEVCONF_FORWARDING = 0,

        DEVCONF_HOPLIMIT,

        DEVCONF_MTU6,

        DEVCONF_ACCEPT_RA,

        DEVCONF_ACCEPT_REDIRECTS,

        DEVCONF_AUTOCONF,

        DEVCONF_DAD_TRANSMITS,

        DEVCONF_RTR_SOLICITS,

        DEVCONF_RTR_SOLICIT_INTERVAL,

        DEVCONF_RTR_SOLICIT_DELAY,

        DEVCONF_USE_TEMPADDR,

        DEVCONF_TEMP_VALID_LFT,

        DEVCONF_TEMP_PREFERED_LFT,

        DEVCONF_REGEN_MAX_RETRY,

        DEVCONF_MAX_DESYNC_FACTOR,

        DEVCONF_MAX_ADDRESSES,

        DEVCONF_FORCE_MLD_VERSION,

        DEVCONF_ACCEPT_RA_DEFRTR,

        DEVCONF_ACCEPT_RA_PINFO,

        DEVCONF_ACCEPT_RA_RTR_PREF,

        DEVCONF_RTR_PROBE_INTERVAL,

        DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,

        DEVCONF_PROXY_NDP,

        DEVCONF_OPTIMISTIC_DAD,

        DEVCONF_ACCEPT_SOURCE_ROUTE,

        DEVCONF_MC_FORWARDING,

        DEVCONF_DISABLE_IPV6,

        DEVCONF_ACCEPT_DAD,

        DEVCONF_FORCE_TLLAO,

        DEVCONF_NDISC_NOTIFY,

        DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL,

        DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL,

        DEVCONF_SUPPRESS_FRAG_NDISC,

        DEVCONF_MAX

};

#endif /* _IPV6_H */