BadVPN – Blame information for rev 1
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1 | office | 1 | /** |
2 | * @file |
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3 | * IPv6 protocol definitions |
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4 | */ |
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5 | |||
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_IP6_H |
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38 | #define LWIP_HDR_PROT_IP6_H |
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39 | |||
40 | #include "lwip/arch.h" |
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41 | #include "lwip/ip6_addr.h" |
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42 | |||
43 | #ifdef __cplusplus |
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44 | extern "C" { |
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45 | #endif |
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46 | |||
47 | /** This is the packed version of ip6_addr_t, |
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48 | used in network headers that are itself packed */ |
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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 ip6_addr_packed { |
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54 | PACK_STRUCT_FIELD(u32_t addr[4]); |
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55 | } PACK_STRUCT_STRUCT; |
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56 | PACK_STRUCT_END |
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57 | #ifdef PACK_STRUCT_USE_INCLUDES |
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58 | # include "arch/epstruct.h" |
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59 | #endif |
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60 | typedef struct ip6_addr_packed ip6_addr_p_t; |
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61 | |||
62 | #define IP6_HLEN 40 |
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63 | |||
64 | #define IP6_NEXTH_HOPBYHOP 0 |
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65 | #define IP6_NEXTH_TCP 6 |
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66 | #define IP6_NEXTH_UDP 17 |
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67 | #define IP6_NEXTH_ENCAPS 41 |
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68 | #define IP6_NEXTH_ROUTING 43 |
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69 | #define IP6_NEXTH_FRAGMENT 44 |
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70 | #define IP6_NEXTH_ICMP6 58 |
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71 | #define IP6_NEXTH_NONE 59 |
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72 | #define IP6_NEXTH_DESTOPTS 60 |
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73 | #define IP6_NEXTH_UDPLITE 136 |
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74 | |||
75 | /** The IPv6 header. */ |
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76 | #ifdef PACK_STRUCT_USE_INCLUDES |
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77 | # include "arch/bpstruct.h" |
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78 | #endif |
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79 | PACK_STRUCT_BEGIN |
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80 | struct ip6_hdr { |
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81 | /** version / traffic class / flow label */ |
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82 | PACK_STRUCT_FIELD(u32_t _v_tc_fl); |
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83 | /** payload length */ |
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84 | PACK_STRUCT_FIELD(u16_t _plen); |
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85 | /** next header */ |
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86 | PACK_STRUCT_FLD_8(u8_t _nexth); |
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87 | /** hop limit */ |
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88 | PACK_STRUCT_FLD_8(u8_t _hoplim); |
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89 | /** source and destination IP addresses */ |
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90 | PACK_STRUCT_FLD_S(ip6_addr_p_t src); |
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91 | PACK_STRUCT_FLD_S(ip6_addr_p_t dest); |
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92 | } PACK_STRUCT_STRUCT; |
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93 | PACK_STRUCT_END |
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94 | #ifdef PACK_STRUCT_USE_INCLUDES |
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95 | # include "arch/epstruct.h" |
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96 | #endif |
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97 | #define IP6H_V(hdr) ((lwip_ntohl((hdr)->_v_tc_fl) >> 28) & 0x0f) |
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98 | #define IP6H_TC(hdr) ((lwip_ntohl((hdr)->_v_tc_fl) >> 20) & 0xff) |
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99 | #define IP6H_FL(hdr) (lwip_ntohl((hdr)->_v_tc_fl) & 0x000fffff) |
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100 | #define IP6H_PLEN(hdr) (lwip_ntohs((hdr)->_plen)) |
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101 | #define IP6H_NEXTH(hdr) ((hdr)->_nexth) |
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102 | #define IP6H_NEXTH_P(hdr) ((u8_t *)(hdr) + 6) |
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103 | #define IP6H_HOPLIM(hdr) ((hdr)->_hoplim) |
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104 | #define IP6H_VTCFL_SET(hdr, v, tc, fl) (hdr)->_v_tc_fl = (lwip_htonl((((u32_t)(v)) << 28) | (((u32_t)(tc)) << 20) | (fl))) |
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105 | #define IP6H_PLEN_SET(hdr, plen) (hdr)->_plen = lwip_htons(plen) |
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106 | #define IP6H_NEXTH_SET(hdr, nexth) (hdr)->_nexth = (nexth) |
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107 | #define IP6H_HOPLIM_SET(hdr, hl) (hdr)->_hoplim = (u8_t)(hl) |
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108 | |||
109 | /* ipv6 extended options header */ |
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110 | #define IP6_PAD1_OPTION 0 |
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111 | #define IP6_PADN_OPTION 1 |
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112 | #define IP6_ROUTER_ALERT_OPTION 5 |
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113 | #define IP6_JUMBO_OPTION 194 |
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114 | #define IP6_HOME_ADDRESS_OPTION 201 |
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115 | #define IP6_ROUTER_ALERT_DLEN 2 |
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116 | #define IP6_ROUTER_ALERT_VALUE_MLD 0 |
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117 | |||
118 | #ifdef PACK_STRUCT_USE_INCLUDES |
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119 | # include "arch/bpstruct.h" |
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120 | #endif |
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121 | PACK_STRUCT_BEGIN |
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122 | struct ip6_opt_hdr { |
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123 | /* router alert option type */ |
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124 | PACK_STRUCT_FLD_8(u8_t _opt_type); |
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125 | /* router alert option data len */ |
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126 | PACK_STRUCT_FLD_8(u8_t _opt_dlen); |
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127 | } PACK_STRUCT_STRUCT; |
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128 | PACK_STRUCT_END |
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129 | #ifdef PACK_STRUCT_USE_INCLUDES |
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130 | # include "arch/epstruct.h" |
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131 | #endif |
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132 | #define IP6_OPT_HLEN 2 |
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133 | #define IP6_OPT_TYPE_ACTION(hdr) ((((hdr)->_opt_type) >> 6) & 0x3) |
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134 | #define IP6_OPT_TYPE_CHANGE(hdr) ((((hdr)->_opt_type) >> 5) & 0x1) |
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135 | #define IP6_OPT_TYPE(hdr) ((hdr)->_opt_type) |
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136 | #define IP6_OPT_DLEN(hdr) ((hdr)->_opt_dlen) |
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137 | |||
138 | /* Hop-by-Hop header. */ |
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139 | #define IP6_HBH_HLEN 2 |
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140 | |||
141 | #ifdef PACK_STRUCT_USE_INCLUDES |
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142 | # include "arch/bpstruct.h" |
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143 | #endif |
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144 | PACK_STRUCT_BEGIN |
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145 | struct ip6_hbh_hdr { |
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146 | /* next header */ |
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147 | PACK_STRUCT_FLD_8(u8_t _nexth); |
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148 | /* header length in 8-octet units */ |
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149 | PACK_STRUCT_FLD_8(u8_t _hlen); |
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150 | } PACK_STRUCT_STRUCT; |
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151 | PACK_STRUCT_END |
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152 | #ifdef PACK_STRUCT_USE_INCLUDES |
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153 | # include "arch/epstruct.h" |
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154 | #endif |
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155 | #define IP6_HBH_NEXTH(hdr) ((hdr)->_nexth) |
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156 | |||
157 | /* Destination header. */ |
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158 | #define IP6_DEST_HLEN 2 |
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159 | |||
160 | #ifdef PACK_STRUCT_USE_INCLUDES |
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161 | # include "arch/bpstruct.h" |
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162 | #endif |
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163 | PACK_STRUCT_BEGIN |
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164 | struct ip6_dest_hdr { |
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165 | /* next header */ |
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166 | PACK_STRUCT_FLD_8(u8_t _nexth); |
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167 | /* header length in 8-octet units */ |
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168 | PACK_STRUCT_FLD_8(u8_t _hlen); |
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169 | } PACK_STRUCT_STRUCT; |
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170 | PACK_STRUCT_END |
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171 | #ifdef PACK_STRUCT_USE_INCLUDES |
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172 | # include "arch/epstruct.h" |
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173 | #endif |
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174 | #define IP6_DEST_NEXTH(hdr) ((hdr)->_nexth) |
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175 | |||
176 | /* Routing header */ |
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177 | #define IP6_ROUT_TYPE2 2 |
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178 | #define IP6_ROUT_RPL 3 |
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179 | |||
180 | #ifdef PACK_STRUCT_USE_INCLUDES |
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181 | # include "arch/bpstruct.h" |
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182 | #endif |
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183 | PACK_STRUCT_BEGIN |
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184 | struct ip6_rout_hdr { |
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185 | /* next header */ |
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186 | PACK_STRUCT_FLD_8(u8_t _nexth); |
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187 | /* reserved */ |
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188 | PACK_STRUCT_FLD_8(u8_t _hlen); |
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189 | /* fragment offset */ |
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190 | PACK_STRUCT_FIELD(u8_t _routing_type); |
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191 | /* fragmented packet identification */ |
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192 | PACK_STRUCT_FIELD(u8_t _segments_left); |
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193 | } PACK_STRUCT_STRUCT; |
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194 | PACK_STRUCT_END |
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195 | #ifdef PACK_STRUCT_USE_INCLUDES |
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196 | # include "arch/epstruct.h" |
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197 | #endif |
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198 | #define IP6_ROUT_NEXTH(hdr) ((hdr)->_nexth) |
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199 | #define IP6_ROUT_TYPE(hdr) ((hdr)->_routing_type) |
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200 | #define IP6_ROUT_SEG_LEFT(hdr) ((hdr)->_segments_left) |
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201 | |||
202 | /* Fragment header. */ |
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203 | #define IP6_FRAG_HLEN 8 |
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204 | #define IP6_FRAG_OFFSET_MASK 0xfff8 |
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205 | #define IP6_FRAG_MORE_FLAG 0x0001 |
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206 | |||
207 | #ifdef PACK_STRUCT_USE_INCLUDES |
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208 | # include "arch/bpstruct.h" |
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209 | #endif |
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210 | PACK_STRUCT_BEGIN |
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211 | struct ip6_frag_hdr { |
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212 | /* next header */ |
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213 | PACK_STRUCT_FLD_8(u8_t _nexth); |
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214 | /* reserved */ |
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215 | PACK_STRUCT_FLD_8(u8_t reserved); |
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216 | /* fragment offset */ |
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217 | PACK_STRUCT_FIELD(u16_t _fragment_offset); |
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218 | /* fragmented packet identification */ |
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219 | PACK_STRUCT_FIELD(u32_t _identification); |
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220 | } PACK_STRUCT_STRUCT; |
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221 | PACK_STRUCT_END |
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222 | #ifdef PACK_STRUCT_USE_INCLUDES |
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223 | # include "arch/epstruct.h" |
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224 | #endif |
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225 | #define IP6_FRAG_NEXTH(hdr) ((hdr)->_nexth) |
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226 | #define IP6_FRAG_MBIT(hdr) (lwip_ntohs((hdr)->_fragment_offset) & 0x1) |
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227 | #define IP6_FRAG_ID(hdr) (lwip_ntohl((hdr)->_identification)) |
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228 | |||
229 | #ifdef __cplusplus |
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230 | } |
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231 | #endif |
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232 | |||
233 | #endif /* LWIP_HDR_PROT_IP6_H */ |