1 | /* @(#) $Header: /tcpdump/master/tcpdump/ospf6.h,v 1.7 2006-09-05 15:50:26 hannes Exp $ (LBL) */ |
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2 | /* |
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3 | * Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997 |
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4 | * The Regents of the University of California. All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that: (1) source code distributions |
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8 | * retain the above copyright notice and this paragraph in its entirety, (2) |
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9 | * distributions including binary code include the above copyright notice and |
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10 | * this paragraph in its entirety in the documentation or other materials |
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11 | * provided with the distribution, and (3) all advertising materials mentioning |
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12 | * features or use of this software display the following acknowledgement: |
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13 | * ``This product includes software developed by the University of California, |
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14 | * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
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15 | * the University nor the names of its contributors may be used to endorse |
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16 | * or promote products derived from this software without specific prior |
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17 | * written permission. |
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18 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
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19 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
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20 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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21 | * |
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22 | * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu) |
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23 | */ |
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24 | #define OSPF_TYPE_HELLO 1 /* Hello */ |
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25 | #define OSPF_TYPE_DD 2 /* Database Description */ |
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26 | #define OSPF_TYPE_LS_REQ 3 /* Link State Request */ |
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27 | #define OSPF_TYPE_LS_UPDATE 4 /* Link State Update */ |
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28 | #define OSPF_TYPE_LS_ACK 5 /* Link State Ack */ |
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29 | |
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30 | /* Options *_options */ |
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31 | #define OSPF6_OPTION_V6 0x01 /* V6 bit: A bit for peeping tom */ |
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32 | #define OSPF6_OPTION_E 0x02 /* E bit: External routes advertised */ |
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33 | #define OSPF6_OPTION_MC 0x04 /* MC bit: Multicast capable */ |
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34 | #define OSPF6_OPTION_N 0x08 /* N bit: For type-7 LSA */ |
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35 | #define OSPF6_OPTION_R 0x10 /* R bit: Router bit */ |
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36 | #define OSPF6_OPTION_DC 0x20 /* DC bit: Demand circuits */ |
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37 | |
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38 | |
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39 | /* db_flags */ |
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40 | #define OSPF6_DB_INIT 0x04 /* */ |
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41 | #define OSPF6_DB_MORE 0x02 |
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42 | #define OSPF6_DB_MASTER 0x01 |
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43 | |
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44 | /* ls_type */ |
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45 | #define LS_TYPE_ROUTER 1 /* router link */ |
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46 | #define LS_TYPE_NETWORK 2 /* network link */ |
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47 | #define LS_TYPE_INTER_AP 3 /* Inter-Area-Prefix */ |
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48 | #define LS_TYPE_INTER_AR 4 /* Inter-Area-Router */ |
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49 | #define LS_TYPE_ASE 5 /* ASE */ |
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50 | #define LS_TYPE_GROUP 6 /* Group membership */ |
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51 | #define LS_TYPE_NSSA 7 /* NSSA */ |
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52 | #define LS_TYPE_LINK 8 /* Link LSA */ |
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53 | #define LS_TYPE_INTRA_AP 9 /* Intra-Area-Prefix */ |
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54 | #define LS_TYPE_INTRA_ATE 10 /* Intra-Area-TE */ |
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55 | #define LS_TYPE_GRACE 11 /* Grace LSA */ |
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56 | #define LS_TYPE_MASK 0x1fff |
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57 | |
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58 | #define LS_SCOPE_LINKLOCAL 0x0000 |
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59 | #define LS_SCOPE_AREA 0x2000 |
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60 | #define LS_SCOPE_AS 0x4000 |
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61 | #define LS_SCOPE_MASK 0x6000 |
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62 | #define LS_SCOPE_U 0x8000 |
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63 | |
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64 | /* rla_link.link_type */ |
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65 | #define RLA_TYPE_ROUTER 1 /* point-to-point to another router */ |
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66 | #define RLA_TYPE_TRANSIT 2 /* connection to transit network */ |
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67 | #define RLA_TYPE_VIRTUAL 4 /* virtual link */ |
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68 | |
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69 | /* rla_flags */ |
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70 | #define RLA_FLAG_B 0x01 |
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71 | #define RLA_FLAG_E 0x02 |
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72 | #define RLA_FLAG_V 0x04 |
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73 | #define RLA_FLAG_W 0x08 |
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74 | #define RLA_FLAG_N 0x10 |
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75 | |
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76 | /* lsa_prefix options */ |
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77 | #define LSA_PREFIX_OPT_NU 0x01 |
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78 | #define LSA_PREFIX_OPT_LA 0x02 |
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79 | #define LSA_PREFIX_OPT_MC 0x04 |
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80 | #define LSA_PREFIX_OPT_P 0x08 |
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81 | #define LSA_PREFIX_OPT_DN 0x10 |
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82 | |
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83 | /* sla_tosmetric breakdown */ |
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84 | #define SLA_MASK_TOS 0x7f000000 |
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85 | #define SLA_MASK_METRIC 0x00ffffff |
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86 | #define SLA_SHIFT_TOS 24 |
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87 | |
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88 | /* asla_metric */ |
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89 | #define ASLA_FLAG_FWDADDR 0x02000000 |
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90 | #define ASLA_FLAG_ROUTETAG 0x01000000 |
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91 | #define ASLA_MASK_METRIC 0x00ffffff |
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92 | |
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93 | typedef u_int32_t rtrid_t; |
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94 | |
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95 | /* link state advertisement header */ |
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96 | struct lsa6_hdr { |
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97 | u_int16_t ls_age; |
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98 | u_int16_t ls_type; |
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99 | rtrid_t ls_stateid; |
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100 | rtrid_t ls_router; |
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101 | u_int32_t ls_seq; |
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102 | u_int16_t ls_chksum; |
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103 | u_int16_t ls_length; |
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104 | }; |
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105 | |
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106 | struct lsa6_prefix { |
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107 | u_int8_t lsa_p_len; |
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108 | u_int8_t lsa_p_opt; |
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109 | u_int16_t lsa_p_metric; |
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110 | u_int8_t lsa_p_prefix[4]; |
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111 | }; |
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112 | |
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113 | /* link state advertisement */ |
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114 | struct lsa6 { |
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115 | struct lsa6_hdr ls_hdr; |
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116 | |
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117 | /* Link state types */ |
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118 | union { |
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119 | /* Router links advertisements */ |
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120 | struct { |
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121 | union { |
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122 | u_int8_t flg; |
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123 | u_int32_t opt; |
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124 | } rla_flgandopt; |
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125 | #define rla_flags rla_flgandopt.flg |
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126 | #define rla_options rla_flgandopt.opt |
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127 | struct rlalink6 { |
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128 | u_int8_t link_type; |
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129 | u_int8_t link_zero[1]; |
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130 | u_int16_t link_metric; |
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131 | u_int32_t link_ifid; |
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132 | u_int32_t link_nifid; |
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133 | rtrid_t link_nrtid; |
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134 | } rla_link[1]; /* may repeat */ |
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135 | } un_rla; |
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136 | |
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137 | /* Network links advertisements */ |
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138 | struct { |
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139 | u_int32_t nla_options; |
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140 | rtrid_t nla_router[1]; /* may repeat */ |
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141 | } un_nla; |
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142 | |
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143 | /* Inter Area Prefix LSA */ |
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144 | struct { |
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145 | u_int32_t inter_ap_metric; |
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146 | struct lsa6_prefix inter_ap_prefix[1]; |
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147 | } un_inter_ap; |
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148 | |
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149 | /* AS external links advertisements */ |
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150 | struct { |
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151 | u_int32_t asla_metric; |
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152 | struct lsa6_prefix asla_prefix[1]; |
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153 | /* some optional fields follow */ |
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154 | } un_asla; |
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155 | |
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156 | #if 0 |
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157 | /* Summary links advertisements */ |
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158 | struct { |
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159 | struct in_addr sla_mask; |
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160 | u_int32_t sla_tosmetric[1]; /* may repeat */ |
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161 | } un_sla; |
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162 | |
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163 | /* Multicast group membership */ |
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164 | struct mcla { |
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165 | u_int32_t mcla_vtype; |
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166 | struct in_addr mcla_vid; |
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167 | } un_mcla[1]; |
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168 | #endif |
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169 | |
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170 | /* Type 7 LSA */ |
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171 | |
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172 | /* Link LSA */ |
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173 | struct llsa { |
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174 | union { |
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175 | u_int8_t pri; |
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176 | u_int32_t opt; |
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177 | } llsa_priandopt; |
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178 | #define llsa_priority llsa_priandopt.pri |
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179 | #define llsa_options llsa_priandopt.opt |
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180 | struct in6_addr llsa_lladdr; |
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181 | u_int32_t llsa_nprefix; |
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182 | struct lsa6_prefix llsa_prefix[1]; |
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183 | } un_llsa; |
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184 | |
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185 | /* Intra-Area-Prefix */ |
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186 | struct { |
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187 | u_int16_t intra_ap_nprefix; |
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188 | u_int16_t intra_ap_lstype; |
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189 | rtrid_t intra_ap_lsid; |
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190 | rtrid_t intra_ap_rtid; |
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191 | struct lsa6_prefix intra_ap_prefix[1]; |
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192 | } un_intra_ap; |
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193 | } lsa_un; |
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194 | }; |
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195 | |
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196 | |
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197 | #define OSPF_AUTH_SIZE 8 |
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198 | |
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199 | /* |
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200 | * the main header |
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201 | */ |
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202 | struct ospf6hdr { |
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203 | u_int8_t ospf6_version; |
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204 | u_int8_t ospf6_type; |
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205 | u_int16_t ospf6_len; |
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206 | rtrid_t ospf6_routerid; |
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207 | rtrid_t ospf6_areaid; |
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208 | u_int16_t ospf6_chksum; |
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209 | u_int8_t ospf6_instanceid; |
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210 | u_int8_t ospf6_rsvd; |
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211 | union { |
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212 | |
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213 | /* Hello packet */ |
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214 | struct { |
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215 | u_int32_t hello_ifid; |
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216 | union { |
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217 | u_int8_t pri; |
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218 | u_int32_t opt; |
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219 | } hello_priandopt; |
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220 | #define hello_priority hello_priandopt.pri |
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221 | #define hello_options hello_priandopt.opt |
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222 | u_int16_t hello_helloint; |
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223 | u_int16_t hello_deadint; |
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224 | rtrid_t hello_dr; |
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225 | rtrid_t hello_bdr; |
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226 | rtrid_t hello_neighbor[1]; /* may repeat */ |
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227 | } un_hello; |
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228 | |
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229 | /* Database Description packet */ |
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230 | struct { |
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231 | u_int32_t db_options; |
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232 | u_int16_t db_mtu; |
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233 | u_int8_t db_mbz; |
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234 | u_int8_t db_flags; |
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235 | u_int32_t db_seq; |
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236 | struct lsa6_hdr db_lshdr[1]; /* may repeat */ |
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237 | } un_db; |
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238 | |
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239 | /* Link State Request */ |
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240 | struct lsr6 { |
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241 | u_int16_t ls_mbz; |
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242 | u_int16_t ls_type; |
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243 | rtrid_t ls_stateid; |
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244 | rtrid_t ls_router; |
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245 | } un_lsr[1]; /* may repeat */ |
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246 | |
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247 | /* Link State Update */ |
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248 | struct { |
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249 | u_int32_t lsu_count; |
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250 | struct lsa6 lsu_lsa[1]; /* may repeat */ |
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251 | } un_lsu; |
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252 | |
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253 | /* Link State Acknowledgement */ |
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254 | struct { |
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255 | struct lsa6_hdr lsa_lshdr[1]; /* may repeat */ |
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256 | } un_lsa ; |
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257 | } ospf6_un ; |
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258 | }; |
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259 | |
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260 | #define ospf6_hello ospf6_un.un_hello |
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261 | #define ospf6_db ospf6_un.un_db |
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262 | #define ospf6_lsr ospf6_un.un_lsr |
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263 | #define ospf6_lsu ospf6_un.un_lsu |
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264 | #define ospf6_lsa ospf6_un.un_lsa |
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265 | |
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