icmpv6.h

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#ifndef _UAPI_LINUX_ICMPV6_H
#define _UAPI_LINUX_ICMPV6_H

#include <linux/types.h>
#include <asm/byteorder.h>

struct icmp6hdr {

    __u8        icmp6_type;
    __u8        icmp6_code;
    __sum16     icmp6_cksum;


    union {
        __be32          un_data32[1];
        __be16          un_data16[2];
        __u8            un_data8[4];

        struct icmpv6_echo {
            __be16      identifier;
            __be16      sequence;
        } u_echo;

                struct icmpv6_nd_advt {
#if defined(__LITTLE_ENDIAN_BITFIELD)
                        __u32       reserved:5,
                                override:1,
                                solicited:1,
                                router:1,
                    reserved2:24;
#elif defined(__BIG_ENDIAN_BITFIELD)
                        __u32       router:1,
                    solicited:1,
                                override:1,
                                reserved:29;
#else
#error  "Please fix <asm/byteorder.h>"
#endif                      
                } u_nd_advt;

                struct icmpv6_nd_ra {
            __u8        hop_limit;
#if defined(__LITTLE_ENDIAN_BITFIELD)
            __u8        reserved:3,
                    router_pref:2,
                    home_agent:1,
                    other:1,
                    managed:1;

#elif defined(__BIG_ENDIAN_BITFIELD)
            __u8        managed:1,
                    other:1,
                    home_agent:1,
                    router_pref:2,
                    reserved:3;
#else
#error  "Please fix <asm/byteorder.h>"
#endif
            __be16      rt_lifetime;
                } u_nd_ra;

    } icmp6_dataun;

#define icmp6_identifier    icmp6_dataun.u_echo.identifier
#define icmp6_sequence      icmp6_dataun.u_echo.sequence
#define icmp6_pointer       icmp6_dataun.un_data32[0]
#define icmp6_mtu       icmp6_dataun.un_data32[0]
#define icmp6_unused        icmp6_dataun.un_data32[0]
#define icmp6_maxdelay      icmp6_dataun.un_data16[0]
#define icmp6_router        icmp6_dataun.u_nd_advt.router
#define icmp6_solicited     icmp6_dataun.u_nd_advt.solicited
#define icmp6_override      icmp6_dataun.u_nd_advt.override
#define icmp6_ndiscreserved icmp6_dataun.u_nd_advt.reserved
#define icmp6_hop_limit     icmp6_dataun.u_nd_ra.hop_limit
#define icmp6_addrconf_managed  icmp6_dataun.u_nd_ra.managed
#define icmp6_addrconf_other    icmp6_dataun.u_nd_ra.other
#define icmp6_rt_lifetime   icmp6_dataun.u_nd_ra.rt_lifetime
#define icmp6_router_pref   icmp6_dataun.u_nd_ra.router_pref
};


#define ICMPV6_ROUTER_PREF_LOW      0x3
#define ICMPV6_ROUTER_PREF_MEDIUM   0x0
#define ICMPV6_ROUTER_PREF_HIGH     0x1
#define ICMPV6_ROUTER_PREF_INVALID  0x2

#define ICMPV6_DEST_UNREACH     1
#define ICMPV6_PKT_TOOBIG       2
#define ICMPV6_TIME_EXCEED      3
#define ICMPV6_PARAMPROB        4

#define ICMPV6_INFOMSG_MASK     0x80

#define ICMPV6_ECHO_REQUEST     128
#define ICMPV6_ECHO_REPLY       129
#define ICMPV6_MGM_QUERY        130
#define ICMPV6_MGM_REPORT           131
#define ICMPV6_MGM_REDUCTION        132

#define ICMPV6_NI_QUERY         139
#define ICMPV6_NI_REPLY         140

#define ICMPV6_MLD2_REPORT      143

#define ICMPV6_DHAAD_REQUEST        144
#define ICMPV6_DHAAD_REPLY      145
#define ICMPV6_MOBILE_PREFIX_SOL    146
#define ICMPV6_MOBILE_PREFIX_ADV    147

/*
 *  Codes for Destination Unreachable
 */
#define ICMPV6_NOROUTE          0
#define ICMPV6_ADM_PROHIBITED       1
#define ICMPV6_NOT_NEIGHBOUR        2
#define ICMPV6_ADDR_UNREACH     3
#define ICMPV6_PORT_UNREACH     4

/*
 *  Codes for Time Exceeded
 */
#define ICMPV6_EXC_HOPLIMIT     0
#define ICMPV6_EXC_FRAGTIME     1

/*
 *  Codes for Parameter Problem
 */
#define ICMPV6_HDR_FIELD        0
#define ICMPV6_UNK_NEXTHDR      1
#define ICMPV6_UNK_OPTION       2

/*
 *  constants for (set|get)sockopt
 */

#define ICMPV6_FILTER           1

/*
 *  ICMPV6 filter
 */

#define ICMPV6_FILTER_BLOCK     1
#define ICMPV6_FILTER_PASS      2
#define ICMPV6_FILTER_BLOCKOTHERS   3
#define ICMPV6_FILTER_PASSONLY      4

struct icmp6_filter {
    __u32       data[8];
};

/*
 *  Definitions for MLDv2
 */
#define MLD2_MODE_IS_INCLUDE    1
#define MLD2_MODE_IS_EXCLUDE    2
#define MLD2_CHANGE_TO_INCLUDE  3
#define MLD2_CHANGE_TO_EXCLUDE  4
#define MLD2_ALLOW_NEW_SOURCES  5
#define MLD2_BLOCK_OLD_SOURCES  6

#define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }


#endif /* _UAPI_LINUX_ICMPV6_H */