1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_LINUX_ICMPV6_H 3 #define _UAPI_LINUX_ICMPV6_H 4 5 #include <linux/types.h> 6 #include <asm/byteorder.h> 7 8 struct icmp6hdr { 9 10 __u8 icmp6_type; 11 __u8 icmp6_code; 12 __sum16 icmp6_cksum; 13 14 15 union { 16 __be32 un_data32[1]; 17 __be16 un_data16[2]; 18 __u8 un_data8[4]; 19 20 struct icmpv6_echo { 21 __be16 identifier; 22 __be16 sequence; 23 } u_echo; 24 25 struct icmpv6_nd_advt { 26 #if defined(__LITTLE_ENDIAN_BITFIELD) 27 __u32 reserved:5, 28 override:1, 29 solicited:1, 30 router:1, 31 reserved2:24; 32 #elif defined(__BIG_ENDIAN_BITFIELD) 33 __u32 router:1, 34 solicited:1, 35 override:1, 36 reserved:29; 37 #else 38 #error "Please fix <asm/byteorder.h>" 39 #endif 40 } u_nd_advt; 41 42 struct icmpv6_nd_ra { 43 __u8 hop_limit; 44 #if defined(__LITTLE_ENDIAN_BITFIELD) 45 __u8 reserved:3, 46 router_pref:2, 47 home_agent:1, 48 other:1, 49 managed:1; 50 51 #elif defined(__BIG_ENDIAN_BITFIELD) 52 __u8 managed:1, 53 other:1, 54 home_agent:1, 55 router_pref:2, 56 reserved:3; 57 #else 58 #error "Please fix <asm/byteorder.h>" 59 #endif 60 __be16 rt_lifetime; 61 } u_nd_ra; 62 63 } icmp6_dataun; 64 65 #define icmp6_identifier icmp6_dataun.u_echo.identifier 66 #define icmp6_sequence icmp6_dataun.u_echo.sequence 67 #define icmp6_pointer icmp6_dataun.un_data32[0] 68 #define icmp6_mtu icmp6_dataun.un_data32[0] 69 #define icmp6_unused icmp6_dataun.un_data32[0] 70 #define icmp6_maxdelay icmp6_dataun.un_data16[0] 71 #define icmp6_datagram_len icmp6_dataun.un_data8[0] 72 #define icmp6_router icmp6_dataun.u_nd_advt.router 73 #define icmp6_solicited icmp6_dataun.u_nd_advt.solicited 74 #define icmp6_override icmp6_dataun.u_nd_advt.override 75 #define icmp6_ndiscreserved icmp6_dataun.u_nd_advt.reserved 76 #define icmp6_hop_limit icmp6_dataun.u_nd_ra.hop_limit 77 #define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed 78 #define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other 79 #define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime 80 #define icmp6_router_pref icmp6_dataun.u_nd_ra.router_pref 81 }; 82 83 84 #define ICMPV6_ROUTER_PREF_LOW 0x3 85 #define ICMPV6_ROUTER_PREF_MEDIUM 0x0 86 #define ICMPV6_ROUTER_PREF_HIGH 0x1 87 #define ICMPV6_ROUTER_PREF_INVALID 0x2 88 89 #define ICMPV6_DEST_UNREACH 1 90 #define ICMPV6_PKT_TOOBIG 2 91 #define ICMPV6_TIME_EXCEED 3 92 #define ICMPV6_PARAMPROB 4 93 94 #define ICMPV6_ERRMSG_MAX 127 95 96 #define ICMPV6_INFOMSG_MASK 0x80 97 98 #define ICMPV6_ECHO_REQUEST 128 99 #define ICMPV6_ECHO_REPLY 129 100 #define ICMPV6_MGM_QUERY 130 101 #define ICMPV6_MGM_REPORT 131 102 #define ICMPV6_MGM_REDUCTION 132 103 104 #define ICMPV6_NI_QUERY 139 105 #define ICMPV6_NI_REPLY 140 106 107 #define ICMPV6_MLD2_REPORT 143 108 109 #define ICMPV6_DHAAD_REQUEST 144 110 #define ICMPV6_DHAAD_REPLY 145 111 #define ICMPV6_MOBILE_PREFIX_SOL 146 112 #define ICMPV6_MOBILE_PREFIX_ADV 147 113 114 #define ICMPV6_MRDISC_ADV 151 115 116 #define ICMPV6_MSG_MAX 255 117 118 /* 119 * Codes for Destination Unreachable 120 */ 121 #define ICMPV6_NOROUTE 0 122 #define ICMPV6_ADM_PROHIBITED 1 123 #define ICMPV6_NOT_NEIGHBOUR 2 124 #define ICMPV6_ADDR_UNREACH 3 125 #define ICMPV6_PORT_UNREACH 4 126 #define ICMPV6_POLICY_FAIL 5 127 #define ICMPV6_REJECT_ROUTE 6 128 129 /* 130 * Codes for Time Exceeded 131 */ 132 #define ICMPV6_EXC_HOPLIMIT 0 133 #define ICMPV6_EXC_FRAGTIME 1 134 135 /* 136 * Codes for Parameter Problem 137 */ 138 #define ICMPV6_HDR_FIELD 0 139 #define ICMPV6_UNK_NEXTHDR 1 140 #define ICMPV6_UNK_OPTION 2 141 #define ICMPV6_HDR_INCOMP 3 142 143 /* Codes for EXT_ECHO (PROBE) */ 144 #define ICMPV6_EXT_ECHO_REQUEST 160 145 #define ICMPV6_EXT_ECHO_REPLY 161 146 /* 147 * constants for (set|get)sockopt 148 */ 149 150 #define ICMPV6_FILTER 1 151 152 /* 153 * ICMPV6 filter 154 */ 155 156 #define ICMPV6_FILTER_BLOCK 1 157 #define ICMPV6_FILTER_PASS 2 158 #define ICMPV6_FILTER_BLOCKOTHERS 3 159 #define ICMPV6_FILTER_PASSONLY 4 160 161 struct icmp6_filter { 162 __u32 data[8]; 163 }; 164 165 /* 166 * Definitions for MLDv2 167 */ 168 #define MLD2_MODE_IS_INCLUDE 1 169 #define MLD2_MODE_IS_EXCLUDE 2 170 #define MLD2_CHANGE_TO_INCLUDE 3 171 #define MLD2_CHANGE_TO_EXCLUDE 4 172 #define MLD2_ALLOW_NEW_SOURCES 5 173 #define MLD2_BLOCK_OLD_SOURCES 6 174 175 #define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } } 176 177 178 #endif /* _UAPI_LINUX_ICMPV6_H */ 179