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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_ICMPV6_H
#define _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_datagram_len icmp6_dataun.un_data8[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_ERRMSG_MAX 127
#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
#define ICMPV6_MRDISC_ADV 151
#define ICMPV6_MSG_MAX 255
/*
* 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
#define ICMPV6_POLICY_FAIL 5
#define ICMPV6_REJECT_ROUTE 6
/*
* 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
#define ICMPV6_HDR_INCOMP 3
/* Codes for EXT_ECHO (PROBE) */
#define ICMPV6_EXT_ECHO_REQUEST 160
#define ICMPV6_EXT_ECHO_REPLY 161
/*
* 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 /* _LINUX_ICMPV6_H */
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