1 | /**
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2 | * @file
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3 | * ND6 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_ND6_H
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38 | #define LWIP_HDR_PROT_ND6_H
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39 |
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40 | #include "lwip/arch.h"
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41 | #include "lwip/ip6_addr.h"
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42 | #include "lwip/prot/ip6.h"
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43 |
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44 | #ifdef __cplusplus
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45 | extern "C" {
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46 | #endif
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47 |
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48 | /** Neighbor solicitation message header. */
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49 | #ifdef PACK_STRUCT_USE_INCLUDES
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50 | # include "arch/bpstruct.h"
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51 | #endif
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52 | PACK_STRUCT_BEGIN
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53 | struct ns_header {
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54 | PACK_STRUCT_FLD_8(u8_t type);
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55 | PACK_STRUCT_FLD_8(u8_t code);
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56 | PACK_STRUCT_FIELD(u16_t chksum);
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57 | PACK_STRUCT_FIELD(u32_t reserved);
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58 | PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
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59 | /* Options follow. */
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60 | } PACK_STRUCT_STRUCT;
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61 | PACK_STRUCT_END
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62 | #ifdef PACK_STRUCT_USE_INCLUDES
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63 | # include "arch/epstruct.h"
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64 | #endif
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65 |
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66 | /** Neighbor advertisement message header. */
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67 | #ifdef PACK_STRUCT_USE_INCLUDES
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68 | # include "arch/bpstruct.h"
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69 | #endif
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70 | PACK_STRUCT_BEGIN
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71 | struct na_header {
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72 | PACK_STRUCT_FLD_8(u8_t type);
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73 | PACK_STRUCT_FLD_8(u8_t code);
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74 | PACK_STRUCT_FIELD(u16_t chksum);
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75 | PACK_STRUCT_FLD_8(u8_t flags);
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76 | PACK_STRUCT_FLD_8(u8_t reserved[3]);
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77 | PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
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78 | /* Options follow. */
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79 | } PACK_STRUCT_STRUCT;
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80 | PACK_STRUCT_END
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81 | #ifdef PACK_STRUCT_USE_INCLUDES
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82 | # include "arch/epstruct.h"
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83 | #endif
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84 | #define ND6_FLAG_ROUTER (0x80)
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85 | #define ND6_FLAG_SOLICITED (0x40)
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86 | #define ND6_FLAG_OVERRIDE (0x20)
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87 |
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88 | /** Router solicitation message header. */
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89 | #ifdef PACK_STRUCT_USE_INCLUDES
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90 | # include "arch/bpstruct.h"
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91 | #endif
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92 | PACK_STRUCT_BEGIN
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93 | struct rs_header {
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94 | PACK_STRUCT_FLD_8(u8_t type);
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95 | PACK_STRUCT_FLD_8(u8_t code);
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96 | PACK_STRUCT_FIELD(u16_t chksum);
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97 | PACK_STRUCT_FIELD(u32_t reserved);
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98 | /* Options follow. */
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99 | } PACK_STRUCT_STRUCT;
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100 | PACK_STRUCT_END
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101 | #ifdef PACK_STRUCT_USE_INCLUDES
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102 | # include "arch/epstruct.h"
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103 | #endif
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104 |
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105 | /** Router advertisement message header. */
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106 | #define ND6_RA_FLAG_MANAGED_ADDR_CONFIG (0x80)
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107 | #define ND6_RA_FLAG_OTHER_CONFIG (0x40)
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108 | #define ND6_RA_FLAG_HOME_AGENT (0x20)
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109 | #define ND6_RA_PREFERENCE_MASK (0x18)
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110 | #define ND6_RA_PREFERENCE_HIGH (0x08)
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111 | #define ND6_RA_PREFERENCE_MEDIUM (0x00)
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112 | #define ND6_RA_PREFERENCE_LOW (0x18)
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113 | #define ND6_RA_PREFERENCE_DISABLED (0x10)
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114 | #ifdef PACK_STRUCT_USE_INCLUDES
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115 | # include "arch/bpstruct.h"
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116 | #endif
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117 | PACK_STRUCT_BEGIN
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118 | struct ra_header {
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119 | PACK_STRUCT_FLD_8(u8_t type);
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120 | PACK_STRUCT_FLD_8(u8_t code);
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121 | PACK_STRUCT_FIELD(u16_t chksum);
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122 | PACK_STRUCT_FLD_8(u8_t current_hop_limit);
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123 | PACK_STRUCT_FLD_8(u8_t flags);
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124 | PACK_STRUCT_FIELD(u16_t router_lifetime);
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125 | PACK_STRUCT_FIELD(u32_t reachable_time);
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126 | PACK_STRUCT_FIELD(u32_t retrans_timer);
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127 | /* Options follow. */
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128 | } PACK_STRUCT_STRUCT;
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129 | PACK_STRUCT_END
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130 | #ifdef PACK_STRUCT_USE_INCLUDES
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131 | # include "arch/epstruct.h"
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132 | #endif
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133 |
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134 | /** Redirect message header. */
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135 | #ifdef PACK_STRUCT_USE_INCLUDES
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136 | # include "arch/bpstruct.h"
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137 | #endif
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138 | PACK_STRUCT_BEGIN
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139 | struct redirect_header {
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140 | PACK_STRUCT_FLD_8(u8_t type);
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141 | PACK_STRUCT_FLD_8(u8_t code);
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142 | PACK_STRUCT_FIELD(u16_t chksum);
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143 | PACK_STRUCT_FIELD(u32_t reserved);
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144 | PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
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145 | PACK_STRUCT_FLD_S(ip6_addr_p_t destination_address);
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146 | /* Options follow. */
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147 | } PACK_STRUCT_STRUCT;
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148 | PACK_STRUCT_END
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149 | #ifdef PACK_STRUCT_USE_INCLUDES
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150 | # include "arch/epstruct.h"
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151 | #endif
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152 |
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153 | /** Link-layer address option. */
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154 | #define ND6_OPTION_TYPE_SOURCE_LLADDR (0x01)
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155 | #define ND6_OPTION_TYPE_TARGET_LLADDR (0x02)
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156 | #ifdef PACK_STRUCT_USE_INCLUDES
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157 | # include "arch/bpstruct.h"
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158 | #endif
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159 | PACK_STRUCT_BEGIN
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160 | struct lladdr_option {
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161 | PACK_STRUCT_FLD_8(u8_t type);
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162 | PACK_STRUCT_FLD_8(u8_t length);
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163 | PACK_STRUCT_FLD_8(u8_t addr[NETIF_MAX_HWADDR_LEN]);
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164 | } PACK_STRUCT_STRUCT;
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165 | PACK_STRUCT_END
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166 | #ifdef PACK_STRUCT_USE_INCLUDES
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167 | # include "arch/epstruct.h"
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168 | #endif
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169 |
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170 | /** Prefix information option. */
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171 | #define ND6_OPTION_TYPE_PREFIX_INFO (0x03)
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172 | #define ND6_PREFIX_FLAG_ON_LINK (0x80)
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173 | #define ND6_PREFIX_FLAG_AUTONOMOUS (0x40)
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174 | #define ND6_PREFIX_FLAG_ROUTER_ADDRESS (0x20)
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175 | #define ND6_PREFIX_FLAG_SITE_PREFIX (0x10)
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176 | #ifdef PACK_STRUCT_USE_INCLUDES
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177 | # include "arch/bpstruct.h"
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178 | #endif
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179 | PACK_STRUCT_BEGIN
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180 | struct prefix_option {
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181 | PACK_STRUCT_FLD_8(u8_t type);
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182 | PACK_STRUCT_FLD_8(u8_t length);
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183 | PACK_STRUCT_FLD_8(u8_t prefix_length);
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184 | PACK_STRUCT_FLD_8(u8_t flags);
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185 | PACK_STRUCT_FIELD(u32_t valid_lifetime);
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186 | PACK_STRUCT_FIELD(u32_t preferred_lifetime);
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187 | PACK_STRUCT_FLD_8(u8_t reserved2[3]);
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188 | PACK_STRUCT_FLD_8(u8_t site_prefix_length);
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189 | PACK_STRUCT_FLD_S(ip6_addr_p_t prefix);
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190 | } PACK_STRUCT_STRUCT;
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191 | PACK_STRUCT_END
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192 | #ifdef PACK_STRUCT_USE_INCLUDES
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193 | # include "arch/epstruct.h"
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194 | #endif
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195 |
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196 | /** Redirected header option. */
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197 | #define ND6_OPTION_TYPE_REDIR_HDR (0x04)
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198 | #ifdef PACK_STRUCT_USE_INCLUDES
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199 | # include "arch/bpstruct.h"
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200 | #endif
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201 | PACK_STRUCT_BEGIN
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202 | struct redirected_header_option {
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203 | PACK_STRUCT_FLD_8(u8_t type);
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204 | PACK_STRUCT_FLD_8(u8_t length);
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205 | PACK_STRUCT_FLD_8(u8_t reserved[6]);
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206 | /* Portion of redirected packet follows. */
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207 | /* PACK_STRUCT_FLD_8(u8_t redirected[8]); */
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208 | } PACK_STRUCT_STRUCT;
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209 | PACK_STRUCT_END
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210 | #ifdef PACK_STRUCT_USE_INCLUDES
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211 | # include "arch/epstruct.h"
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212 | #endif
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213 |
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214 | /** MTU option. */
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215 | #define ND6_OPTION_TYPE_MTU (0x05)
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216 | #ifdef PACK_STRUCT_USE_INCLUDES
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217 | # include "arch/bpstruct.h"
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218 | #endif
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219 | PACK_STRUCT_BEGIN
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220 | struct mtu_option {
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221 | PACK_STRUCT_FLD_8(u8_t type);
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222 | PACK_STRUCT_FLD_8(u8_t length);
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223 | PACK_STRUCT_FIELD(u16_t reserved);
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224 | PACK_STRUCT_FIELD(u32_t mtu);
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225 | } PACK_STRUCT_STRUCT;
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226 | PACK_STRUCT_END
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227 | #ifdef PACK_STRUCT_USE_INCLUDES
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228 | # include "arch/epstruct.h"
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229 | #endif
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230 |
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231 | /** Route information option. */
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232 | #define ND6_OPTION_TYPE_ROUTE_INFO (24)
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233 | #ifdef PACK_STRUCT_USE_INCLUDES
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234 | # include "arch/bpstruct.h"
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235 | #endif
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236 | PACK_STRUCT_BEGIN
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237 | struct route_option {
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238 | PACK_STRUCT_FLD_8(u8_t type);
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239 | PACK_STRUCT_FLD_8(u8_t length);
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240 | PACK_STRUCT_FLD_8(u8_t prefix_length);
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241 | PACK_STRUCT_FLD_8(u8_t preference);
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242 | PACK_STRUCT_FIELD(u32_t route_lifetime);
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243 | PACK_STRUCT_FLD_S(ip6_addr_p_t prefix);
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244 | } PACK_STRUCT_STRUCT;
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245 | PACK_STRUCT_END
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246 | #ifdef PACK_STRUCT_USE_INCLUDES
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247 | # include "arch/epstruct.h"
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248 | #endif
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249 |
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250 | /** Recursive DNS Server Option. */
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251 | #define ND6_OPTION_TYPE_RDNSS (25)
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252 | #ifdef PACK_STRUCT_USE_INCLUDES
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253 | # include "arch/bpstruct.h"
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254 | #endif
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255 | PACK_STRUCT_BEGIN
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256 | struct rdnss_option {
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257 | PACK_STRUCT_FLD_8(u8_t type);
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258 | PACK_STRUCT_FLD_8(u8_t length);
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259 | PACK_STRUCT_FIELD(u16_t reserved);
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260 | PACK_STRUCT_FIELD(u32_t lifetime);
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261 | PACK_STRUCT_FLD_S(ip6_addr_p_t rdnss_address[1]);
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262 | } PACK_STRUCT_STRUCT;
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263 | PACK_STRUCT_END
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264 | #ifdef PACK_STRUCT_USE_INCLUDES
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265 | # include "arch/epstruct.h"
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266 | #endif
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267 |
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268 | #define SIZEOF_RDNSS_OPTION_BASE 8 /* size without addresses */
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269 |
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270 | #ifdef __cplusplus
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271 | }
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272 | #endif
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273 |
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274 | #endif /* LWIP_HDR_PROT_ND6_H */
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