1 | /**
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2 | * @file
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3 | * ICMP6 protocol definitions
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4 | */
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5 |
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6 | /*
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7 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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8 | * All rights reserved.
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9 | *
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10 | * Redistribution and use in source and binary forms, with or without modification,
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11 | * are permitted provided that the following conditions are met:
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12 | *
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13 | * 1. Redistributions of source code must retain the above copyright notice,
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14 | * this list of conditions and the following disclaimer.
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15 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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16 | * this list of conditions and the following disclaimer in the documentation
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17 | * and/or other materials provided with the distribution.
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18 | * 3. The name of the author may not be used to endorse or promote products
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19 | * derived from this software without specific prior written permission.
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20 | *
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21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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30 | * OF SUCH DAMAGE.
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31 | *
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32 | * This file is part of the lwIP TCP/IP stack.
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33 | *
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34 | * Author: Adam Dunkels <adam@sics.se>
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35 | *
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36 | */
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37 | #ifndef LWIP_HDR_PROT_ICMP6_H
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38 | #define LWIP_HDR_PROT_ICMP6_H
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39 |
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40 | #include "lwip/arch.h"
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41 |
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42 | #ifdef __cplusplus
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43 | extern "C" {
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44 | #endif
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45 |
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46 | /** ICMP type */
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47 | enum icmp6_type {
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48 | /** Destination unreachable */
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49 | ICMP6_TYPE_DUR = 1,
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50 | /** Packet too big */
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51 | ICMP6_TYPE_PTB = 2,
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52 | /** Time exceeded */
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53 | ICMP6_TYPE_TE = 3,
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54 | /** Parameter problem */
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55 | ICMP6_TYPE_PP = 4,
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56 | /** Private experimentation */
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57 | ICMP6_TYPE_PE1 = 100,
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58 | /** Private experimentation */
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59 | ICMP6_TYPE_PE2 = 101,
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60 | /** Reserved for expansion of error messages */
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61 | ICMP6_TYPE_RSV_ERR = 127,
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62 |
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63 | /** Echo request */
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64 | ICMP6_TYPE_EREQ = 128,
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65 | /** Echo reply */
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66 | ICMP6_TYPE_EREP = 129,
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67 | /** Multicast listener query */
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68 | ICMP6_TYPE_MLQ = 130,
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69 | /** Multicast listener report */
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70 | ICMP6_TYPE_MLR = 131,
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71 | /** Multicast listener done */
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72 | ICMP6_TYPE_MLD = 132,
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73 | /** Router solicitation */
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74 | ICMP6_TYPE_RS = 133,
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75 | /** Router advertisement */
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76 | ICMP6_TYPE_RA = 134,
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77 | /** Neighbor solicitation */
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78 | ICMP6_TYPE_NS = 135,
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79 | /** Neighbor advertisement */
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80 | ICMP6_TYPE_NA = 136,
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81 | /** Redirect */
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82 | ICMP6_TYPE_RD = 137,
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83 | /** Multicast router advertisement */
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84 | ICMP6_TYPE_MRA = 151,
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85 | /** Multicast router solicitation */
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86 | ICMP6_TYPE_MRS = 152,
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87 | /** Multicast router termination */
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88 | ICMP6_TYPE_MRT = 153,
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89 | /** Private experimentation */
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90 | ICMP6_TYPE_PE3 = 200,
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91 | /** Private experimentation */
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92 | ICMP6_TYPE_PE4 = 201,
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93 | /** Reserved for expansion of informational messages */
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94 | ICMP6_TYPE_RSV_INF = 255
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95 | };
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96 |
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97 | /** ICMP destination unreachable codes */
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98 | enum icmp6_dur_code {
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99 | /** No route to destination */
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100 | ICMP6_DUR_NO_ROUTE = 0,
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101 | /** Communication with destination administratively prohibited */
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102 | ICMP6_DUR_PROHIBITED = 1,
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103 | /** Beyond scope of source address */
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104 | ICMP6_DUR_SCOPE = 2,
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105 | /** Address unreachable */
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106 | ICMP6_DUR_ADDRESS = 3,
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107 | /** Port unreachable */
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108 | ICMP6_DUR_PORT = 4,
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109 | /** Source address failed ingress/egress policy */
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110 | ICMP6_DUR_POLICY = 5,
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111 | /** Reject route to destination */
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112 | ICMP6_DUR_REJECT_ROUTE = 6
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113 | };
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114 |
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115 | /** ICMP time exceeded codes */
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116 | enum icmp6_te_code {
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117 | /** Hop limit exceeded in transit */
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118 | ICMP6_TE_HL = 0,
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119 | /** Fragment reassembly time exceeded */
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120 | ICMP6_TE_FRAG = 1
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121 | };
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122 |
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123 | /** ICMP parameter code */
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124 | enum icmp6_pp_code {
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125 | /** Erroneous header field encountered */
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126 | ICMP6_PP_FIELD = 0,
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127 | /** Unrecognized next header type encountered */
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128 | ICMP6_PP_HEADER = 1,
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129 | /** Unrecognized IPv6 option encountered */
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130 | ICMP6_PP_OPTION = 2
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131 | };
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132 |
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133 | /** This is the standard ICMP6 header. */
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134 | #ifdef PACK_STRUCT_USE_INCLUDES
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135 | # include "arch/bpstruct.h"
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136 | #endif
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137 | PACK_STRUCT_BEGIN
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138 | struct icmp6_hdr {
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139 | PACK_STRUCT_FLD_8(u8_t type);
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140 | PACK_STRUCT_FLD_8(u8_t code);
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141 | PACK_STRUCT_FIELD(u16_t chksum);
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142 | PACK_STRUCT_FIELD(u32_t data);
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143 | } PACK_STRUCT_STRUCT;
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144 | PACK_STRUCT_END
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145 | #ifdef PACK_STRUCT_USE_INCLUDES
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146 | # include "arch/epstruct.h"
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147 | #endif
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148 |
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149 | /** This is the ICMP6 header adapted for echo req/resp. */
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150 | #ifdef PACK_STRUCT_USE_INCLUDES
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151 | # include "arch/bpstruct.h"
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152 | #endif
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153 | PACK_STRUCT_BEGIN
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154 | struct icmp6_echo_hdr {
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155 | PACK_STRUCT_FLD_8(u8_t type);
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156 | PACK_STRUCT_FLD_8(u8_t code);
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157 | PACK_STRUCT_FIELD(u16_t chksum);
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158 | PACK_STRUCT_FIELD(u16_t id);
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159 | PACK_STRUCT_FIELD(u16_t seqno);
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160 | } PACK_STRUCT_STRUCT;
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161 | PACK_STRUCT_END
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162 | #ifdef PACK_STRUCT_USE_INCLUDES
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163 | # include "arch/epstruct.h"
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164 | #endif
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165 |
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166 | #ifdef __cplusplus
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167 | }
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168 | #endif
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169 |
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170 | #endif /* LWIP_HDR_PROT_ICMP6_H */
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