1 | /** @file
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2 | DnsDxe support functions implementation.
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3 |
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4 | Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>
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5 | SPDX-License-Identifier: BSD-2-Clause-Patent
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6 |
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7 | **/
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8 |
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9 | #include "DnsImpl.h"
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10 |
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11 | /**
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12 | Remove TokenEntry from TokenMap.
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13 |
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14 | @param[in] TokenMap All DNSv4 Token entrys.
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15 | @param[in] TokenEntry TokenEntry need to be removed.
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16 |
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17 | @retval EFI_SUCCESS Remove TokenEntry from TokenMap successfully.
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18 | @retval EFI_NOT_FOUND TokenEntry is not found in TokenMap.
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19 |
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20 | **/
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21 | EFI_STATUS
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22 | Dns4RemoveTokenEntry (
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23 | IN NET_MAP *TokenMap,
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24 | IN DNS4_TOKEN_ENTRY *TokenEntry
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25 | )
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26 | {
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27 | NET_MAP_ITEM *Item;
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28 |
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29 | //
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30 | // Find the TokenEntry first.
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31 | //
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32 | Item = NetMapFindKey (TokenMap, (VOID *)TokenEntry);
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33 |
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34 | if (Item != NULL) {
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35 | //
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36 | // Remove the TokenEntry if it's found in the map.
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37 | //
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38 | NetMapRemoveItem (TokenMap, Item, NULL);
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39 |
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40 | return EFI_SUCCESS;
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41 | }
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42 |
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43 | return EFI_NOT_FOUND;
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44 | }
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45 |
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46 | /**
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47 | Remove TokenEntry from TokenMap.
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48 |
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49 | @param[in] TokenMap All DNSv6 Token entrys.
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50 | @param[in] TokenEntry TokenEntry need to be removed.
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51 |
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52 | @retval EFI_SUCCESS Remove TokenEntry from TokenMap successfully.
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53 | @retval EFI_NOT_FOUND TokenEntry is not found in TokenMap.
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54 |
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55 | **/
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56 | EFI_STATUS
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57 | Dns6RemoveTokenEntry (
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58 | IN NET_MAP *TokenMap,
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59 | IN DNS6_TOKEN_ENTRY *TokenEntry
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60 | )
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61 | {
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62 | NET_MAP_ITEM *Item;
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63 |
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64 | //
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65 | // Find the TokenEntry first.
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66 | //
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67 | Item = NetMapFindKey (TokenMap, (VOID *)TokenEntry);
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68 |
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69 | if (Item != NULL) {
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70 | //
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71 | // Remove the TokenEntry if it's found in the map.
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72 | //
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73 | NetMapRemoveItem (TokenMap, Item, NULL);
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74 |
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75 | return EFI_SUCCESS;
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76 | }
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77 |
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78 | return EFI_NOT_FOUND;
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79 | }
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80 |
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81 | /**
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82 | This function cancel the token specified by Arg in the Map.
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83 |
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84 | @param[in] Map Pointer to the NET_MAP.
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85 | @param[in] Item Pointer to the NET_MAP_ITEM.
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86 | @param[in] Arg Pointer to the token to be cancelled. If NULL, all
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87 | the tokens in this Map will be cancelled.
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88 | This parameter is optional and may be NULL.
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89 |
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90 | @retval EFI_SUCCESS The token is cancelled if Arg is NULL, or the token
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91 | is not the same as that in the Item, if Arg is not
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92 | NULL.
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93 | @retval EFI_ABORTED Arg is not NULL, and the token specified by Arg is
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94 | cancelled.
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95 |
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96 | **/
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97 | EFI_STATUS
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98 | EFIAPI
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99 | Dns4CancelTokens (
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100 | IN NET_MAP *Map,
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101 | IN NET_MAP_ITEM *Item,
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102 | IN VOID *Arg OPTIONAL
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103 | )
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104 | {
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105 | DNS4_TOKEN_ENTRY *TokenEntry;
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106 | NET_BUF *Packet;
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107 | UDP_IO *UdpIo;
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108 |
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109 | if ((Arg != NULL) && (Item->Key != Arg)) {
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110 | return EFI_SUCCESS;
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111 | }
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112 |
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113 | if (Item->Value != NULL) {
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114 | //
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115 | // If the TokenEntry is a transmit TokenEntry, the corresponding Packet is recorded in
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116 | // Item->Value.
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117 | //
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118 | Packet = (NET_BUF *)(Item->Value);
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119 | UdpIo = (UDP_IO *)(*((UINTN *)&Packet->ProtoData[0]));
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120 |
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121 | UdpIoCancelSentDatagram (UdpIo, Packet);
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122 | }
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123 |
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124 | //
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125 | // Remove TokenEntry from Dns4TxTokens.
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126 | //
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127 | TokenEntry = (DNS4_TOKEN_ENTRY *)Item->Key;
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128 | if (Dns4RemoveTokenEntry (Map, TokenEntry) == EFI_SUCCESS) {
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129 | TokenEntry->Token->Status = EFI_ABORTED;
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130 | gBS->SignalEvent (TokenEntry->Token->Event);
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131 | DispatchDpc ();
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132 | }
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133 |
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134 | if (Arg != NULL) {
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135 | return EFI_ABORTED;
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136 | }
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137 |
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138 | return EFI_SUCCESS;
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139 | }
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140 |
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141 | /**
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142 | This function cancel the token specified by Arg in the Map.
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143 |
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144 | @param[in] Map Pointer to the NET_MAP.
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145 | @param[in] Item Pointer to the NET_MAP_ITEM.
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146 | @param[in] Arg Pointer to the token to be cancelled. If NULL, all
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147 | the tokens in this Map will be cancelled.
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148 | This parameter is optional and may be NULL.
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149 |
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150 | @retval EFI_SUCCESS The token is cancelled if Arg is NULL, or the token
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151 | is not the same as that in the Item, if Arg is not
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152 | NULL.
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153 | @retval EFI_ABORTED Arg is not NULL, and the token specified by Arg is
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154 | cancelled.
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155 |
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156 | **/
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157 | EFI_STATUS
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158 | EFIAPI
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159 | Dns6CancelTokens (
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160 | IN NET_MAP *Map,
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161 | IN NET_MAP_ITEM *Item,
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162 | IN VOID *Arg OPTIONAL
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163 | )
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164 | {
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165 | DNS6_TOKEN_ENTRY *TokenEntry;
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166 | NET_BUF *Packet;
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167 | UDP_IO *UdpIo;
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168 |
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169 | if ((Arg != NULL) && (Item->Key != Arg)) {
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170 | return EFI_SUCCESS;
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171 | }
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172 |
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173 | if (Item->Value != NULL) {
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174 | //
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175 | // If the TokenEntry is a transmit TokenEntry, the corresponding Packet is recorded in
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176 | // Item->Value.
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177 | //
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178 | Packet = (NET_BUF *)(Item->Value);
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179 | UdpIo = (UDP_IO *)(*((UINTN *)&Packet->ProtoData[0]));
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180 |
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181 | UdpIoCancelSentDatagram (UdpIo, Packet);
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182 | }
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183 |
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184 | //
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185 | // Remove TokenEntry from Dns6TxTokens.
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186 | //
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187 | TokenEntry = (DNS6_TOKEN_ENTRY *)Item->Key;
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188 | if (Dns6RemoveTokenEntry (Map, TokenEntry) == EFI_SUCCESS) {
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189 | TokenEntry->Token->Status = EFI_ABORTED;
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190 | gBS->SignalEvent (TokenEntry->Token->Event);
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191 | DispatchDpc ();
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192 | }
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193 |
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194 | if (Arg != NULL) {
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195 | return EFI_ABORTED;
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196 | }
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197 |
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198 | return EFI_SUCCESS;
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199 | }
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200 |
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201 | /**
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202 | Get the TokenEntry from the TokensMap.
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203 |
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204 | @param[in] TokensMap All DNSv4 Token entrys
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205 | @param[in] Token Pointer to the token to be get.
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206 | @param[out] TokenEntry Pointer to TokenEntry corresponding Token.
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207 |
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208 | @retval EFI_SUCCESS Get the TokenEntry from the TokensMap successfully.
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209 | @retval EFI_NOT_FOUND TokenEntry is not found in TokenMap.
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210 |
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211 | **/
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212 | EFI_STATUS
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213 | EFIAPI
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214 | GetDns4TokenEntry (
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215 | IN NET_MAP *TokensMap,
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216 | IN EFI_DNS4_COMPLETION_TOKEN *Token,
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217 | OUT DNS4_TOKEN_ENTRY **TokenEntry
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218 | )
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219 | {
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220 | LIST_ENTRY *Entry;
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221 |
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222 | NET_MAP_ITEM *Item;
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223 |
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224 | NET_LIST_FOR_EACH (Entry, &TokensMap->Used) {
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225 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);
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226 | *TokenEntry = (DNS4_TOKEN_ENTRY *)(Item->Key);
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227 | if ((*TokenEntry)->Token == Token) {
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228 | return EFI_SUCCESS;
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229 | }
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230 | }
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231 |
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232 | *TokenEntry = NULL;
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233 |
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234 | return EFI_NOT_FOUND;
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235 | }
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236 |
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237 | /**
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238 | Get the TokenEntry from the TokensMap.
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239 |
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240 | @param[in] TokensMap All DNSv6 Token entrys
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241 | @param[in] Token Pointer to the token to be get.
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242 | @param[out] TokenEntry Pointer to TokenEntry corresponding Token.
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243 |
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244 | @retval EFI_SUCCESS Get the TokenEntry from the TokensMap successfully.
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245 | @retval EFI_NOT_FOUND TokenEntry is not found in TokenMap.
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246 |
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247 | **/
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248 | EFI_STATUS
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249 | EFIAPI
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250 | GetDns6TokenEntry (
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251 | IN NET_MAP *TokensMap,
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252 | IN EFI_DNS6_COMPLETION_TOKEN *Token,
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253 | OUT DNS6_TOKEN_ENTRY **TokenEntry
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254 | )
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255 | {
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256 | LIST_ENTRY *Entry;
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257 |
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258 | NET_MAP_ITEM *Item;
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259 |
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260 | NET_LIST_FOR_EACH (Entry, &TokensMap->Used) {
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261 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);
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262 | *TokenEntry = (DNS6_TOKEN_ENTRY *)(Item->Key);
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263 | if ((*TokenEntry)->Token == Token) {
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264 | return EFI_SUCCESS;
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265 | }
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266 | }
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267 |
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268 | *TokenEntry = NULL;
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269 |
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270 | return EFI_NOT_FOUND;
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271 | }
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272 |
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273 | /**
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274 | Cancel DNS4 tokens from the DNS4 instance.
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275 |
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276 | @param[in] Instance Pointer to the DNS instance context data.
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277 | @param[in] Token Pointer to the token to be canceled. If NULL, all
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278 | tokens in this instance will be cancelled.
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279 | This parameter is optional and may be NULL.
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280 |
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281 | @retval EFI_SUCCESS The Token is cancelled.
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282 | @retval EFI_NOT_FOUND The Token is not found.
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283 |
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284 | **/
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285 | EFI_STATUS
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286 | Dns4InstanceCancelToken (
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287 | IN DNS_INSTANCE *Instance,
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288 | IN EFI_DNS4_COMPLETION_TOKEN *Token
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289 | )
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290 | {
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291 | EFI_STATUS Status;
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292 | DNS4_TOKEN_ENTRY *TokenEntry;
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293 |
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294 | TokenEntry = NULL;
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295 |
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296 | if (Token != NULL ) {
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297 | Status = GetDns4TokenEntry (&Instance->Dns4TxTokens, Token, &TokenEntry);
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298 | if (EFI_ERROR (Status)) {
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299 | return Status;
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300 | }
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301 | } else {
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302 | TokenEntry = NULL;
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303 | }
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304 |
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305 | //
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306 | // Cancel this TokenEntry from the Dns4TxTokens map.
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307 | //
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308 | Status = NetMapIterate (&Instance->Dns4TxTokens, Dns4CancelTokens, TokenEntry);
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309 |
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310 | if ((TokenEntry != NULL) && (Status == EFI_ABORTED)) {
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311 | //
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312 | // If Token isn't NULL and Status is EFI_ABORTED, the token is cancelled from
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313 | // the Dns4TxTokens and returns success.
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314 | //
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315 | if (NetMapIsEmpty (&Instance->Dns4TxTokens)) {
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316 | Instance->UdpIo->Protocol.Udp4->Cancel (Instance->UdpIo->Protocol.Udp4, &Instance->UdpIo->RecvRequest->Token.Udp4);
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317 | }
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318 |
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319 | return EFI_SUCCESS;
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320 | }
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321 |
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322 | ASSERT ((TokenEntry != NULL) || (0 == NetMapGetCount (&Instance->Dns4TxTokens)));
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323 |
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324 | if (NetMapIsEmpty (&Instance->Dns4TxTokens)) {
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325 | Instance->UdpIo->Protocol.Udp4->Cancel (Instance->UdpIo->Protocol.Udp4, &Instance->UdpIo->RecvRequest->Token.Udp4);
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326 | }
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327 |
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328 | return EFI_SUCCESS;
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329 | }
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330 |
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331 | /**
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332 | Cancel DNS6 tokens from the DNS6 instance.
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333 |
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334 | @param[in] Instance Pointer to the DNS instance context data.
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335 | @param[in] Token Pointer to the token to be canceled. If NULL, all
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336 | tokens in this instance will be cancelled.
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337 | This parameter is optional and may be NULL.
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338 |
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339 | @retval EFI_SUCCESS The Token is cancelled.
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340 | @retval EFI_NOT_FOUND The Token is not found.
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341 |
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342 | **/
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343 | EFI_STATUS
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344 | Dns6InstanceCancelToken (
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345 | IN DNS_INSTANCE *Instance,
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346 | IN EFI_DNS6_COMPLETION_TOKEN *Token
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347 | )
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348 | {
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349 | EFI_STATUS Status;
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350 | DNS6_TOKEN_ENTRY *TokenEntry;
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351 |
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352 | TokenEntry = NULL;
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353 |
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354 | if (Token != NULL ) {
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355 | Status = GetDns6TokenEntry (&Instance->Dns6TxTokens, Token, &TokenEntry);
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356 | if (EFI_ERROR (Status)) {
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357 | return Status;
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358 | }
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359 | } else {
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360 | TokenEntry = NULL;
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361 | }
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362 |
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363 | //
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364 | // Cancel this TokenEntry from the Dns6TxTokens map.
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365 | //
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366 | Status = NetMapIterate (&Instance->Dns6TxTokens, Dns6CancelTokens, TokenEntry);
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367 |
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368 | if ((TokenEntry != NULL) && (Status == EFI_ABORTED)) {
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369 | //
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370 | // If Token isn't NULL and Status is EFI_ABORTED, the token is cancelled from
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371 | // the Dns6TxTokens and returns success.
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372 | //
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373 | if (NetMapIsEmpty (&Instance->Dns6TxTokens)) {
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374 | Instance->UdpIo->Protocol.Udp6->Cancel (Instance->UdpIo->Protocol.Udp6, &Instance->UdpIo->RecvRequest->Token.Udp6);
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375 | }
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376 |
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377 | return EFI_SUCCESS;
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378 | }
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379 |
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380 | ASSERT ((TokenEntry != NULL) || (0 == NetMapGetCount (&Instance->Dns6TxTokens)));
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381 |
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382 | if (NetMapIsEmpty (&Instance->Dns6TxTokens)) {
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383 | Instance->UdpIo->Protocol.Udp6->Cancel (Instance->UdpIo->Protocol.Udp6, &Instance->UdpIo->RecvRequest->Token.Udp6);
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384 | }
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385 |
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386 | return EFI_SUCCESS;
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387 | }
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388 |
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389 | /**
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390 | Free the resource related to the configure parameters.
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391 |
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392 | @param Config The DNS configure data
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393 |
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394 | **/
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395 | VOID
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396 | Dns4CleanConfigure (
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397 | IN OUT EFI_DNS4_CONFIG_DATA *Config
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398 | )
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399 | {
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400 | if (Config->DnsServerList != NULL) {
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401 | FreePool (Config->DnsServerList);
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402 | }
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403 |
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404 | ZeroMem (Config, sizeof (EFI_DNS4_CONFIG_DATA));
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405 | }
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406 |
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407 | /**
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408 | Free the resource related to the configure parameters.
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409 |
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410 | @param Config The DNS configure data
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411 |
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412 | **/
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413 | VOID
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414 | Dns6CleanConfigure (
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415 | IN OUT EFI_DNS6_CONFIG_DATA *Config
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416 | )
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417 | {
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418 | if (Config->DnsServerList != NULL) {
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419 | FreePool (Config->DnsServerList);
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420 | }
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421 |
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422 | ZeroMem (Config, sizeof (EFI_DNS6_CONFIG_DATA));
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423 | }
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424 |
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425 | /**
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426 | Allocate memory for configure parameter such as timeout value for Dst,
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427 | then copy the configure parameter from Src to Dst.
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428 |
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429 | @param[out] Dst The destination DHCP configure data.
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430 | @param[in] Src The source DHCP configure data.
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431 |
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432 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
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433 | @retval EFI_SUCCESS The configure is copied.
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434 |
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435 | **/
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436 | EFI_STATUS
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437 | Dns4CopyConfigure (
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438 | OUT EFI_DNS4_CONFIG_DATA *Dst,
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439 | IN EFI_DNS4_CONFIG_DATA *Src
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440 | )
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441 | {
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442 | UINTN Len;
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443 | UINT32 Index;
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444 |
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445 | CopyMem (Dst, Src, sizeof (*Dst));
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446 | Dst->DnsServerList = NULL;
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447 |
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448 | //
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449 | // Allocate a memory then copy DnsServerList to it
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450 | //
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451 | if (Src->DnsServerList != NULL) {
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452 | Len = Src->DnsServerListCount * sizeof (EFI_IPv4_ADDRESS);
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453 | Dst->DnsServerList = AllocatePool (Len);
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454 | if (Dst->DnsServerList == NULL) {
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455 | Dns4CleanConfigure (Dst);
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456 | return EFI_OUT_OF_RESOURCES;
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457 | }
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458 |
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459 | for (Index = 0; Index < Src->DnsServerListCount; Index++) {
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460 | CopyMem (&Dst->DnsServerList[Index], &Src->DnsServerList[Index], sizeof (EFI_IPv4_ADDRESS));
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461 | }
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462 | }
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463 |
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464 | return EFI_SUCCESS;
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465 | }
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466 |
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467 | /**
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468 | Allocate memory for configure parameter such as timeout value for Dst,
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469 | then copy the configure parameter from Src to Dst.
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470 |
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471 | @param[out] Dst The destination DHCP configure data.
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472 | @param[in] Src The source DHCP configure data.
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473 |
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474 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
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475 | @retval EFI_SUCCESS The configure is copied.
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476 |
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477 | **/
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478 | EFI_STATUS
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479 | Dns6CopyConfigure (
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480 | OUT EFI_DNS6_CONFIG_DATA *Dst,
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481 | IN EFI_DNS6_CONFIG_DATA *Src
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482 | )
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483 | {
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484 | UINTN Len;
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485 | UINT32 Index;
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486 |
|
---|
487 | CopyMem (Dst, Src, sizeof (*Dst));
|
---|
488 | Dst->DnsServerList = NULL;
|
---|
489 |
|
---|
490 | //
|
---|
491 | // Allocate a memory then copy DnsServerList to it
|
---|
492 | //
|
---|
493 | if (Src->DnsServerList != NULL) {
|
---|
494 | Len = Src->DnsServerCount * sizeof (EFI_IPv6_ADDRESS);
|
---|
495 | Dst->DnsServerList = AllocatePool (Len);
|
---|
496 | if (Dst->DnsServerList == NULL) {
|
---|
497 | Dns6CleanConfigure (Dst);
|
---|
498 | return EFI_OUT_OF_RESOURCES;
|
---|
499 | }
|
---|
500 |
|
---|
501 | for (Index = 0; Index < Src->DnsServerCount; Index++) {
|
---|
502 | CopyMem (&Dst->DnsServerList[Index], &Src->DnsServerList[Index], sizeof (EFI_IPv6_ADDRESS));
|
---|
503 | }
|
---|
504 | }
|
---|
505 |
|
---|
506 | return EFI_SUCCESS;
|
---|
507 | }
|
---|
508 |
|
---|
509 | /**
|
---|
510 | Callback of Dns packet. Does nothing.
|
---|
511 |
|
---|
512 | @param Arg The context.
|
---|
513 |
|
---|
514 | **/
|
---|
515 | VOID
|
---|
516 | EFIAPI
|
---|
517 | DnsDummyExtFree (
|
---|
518 | IN VOID *Arg
|
---|
519 | )
|
---|
520 | {
|
---|
521 | }
|
---|
522 |
|
---|
523 | /**
|
---|
524 | Poll the UDP to get the IP4 default address, which may be retrieved
|
---|
525 | by DHCP.
|
---|
526 |
|
---|
527 | The default time out value is 5 seconds. If IP has retrieved the default address,
|
---|
528 | the UDP is reconfigured.
|
---|
529 |
|
---|
530 | @param Instance The DNS instance
|
---|
531 | @param UdpIo The UDP_IO to poll
|
---|
532 | @param UdpCfgData The UDP configure data to reconfigure the UDP_IO
|
---|
533 |
|
---|
534 | @retval TRUE The default address is retrieved and UDP is reconfigured.
|
---|
535 | @retval FALSE Some error occurred.
|
---|
536 |
|
---|
537 | **/
|
---|
538 | BOOLEAN
|
---|
539 | Dns4GetMapping (
|
---|
540 | IN DNS_INSTANCE *Instance,
|
---|
541 | IN UDP_IO *UdpIo,
|
---|
542 | IN EFI_UDP4_CONFIG_DATA *UdpCfgData
|
---|
543 | )
|
---|
544 | {
|
---|
545 | DNS_SERVICE *Service;
|
---|
546 | EFI_IP4_MODE_DATA Ip4Mode;
|
---|
547 | EFI_UDP4_PROTOCOL *Udp;
|
---|
548 | EFI_STATUS Status;
|
---|
549 |
|
---|
550 | ASSERT (Instance->Dns4CfgData.UseDefaultSetting);
|
---|
551 |
|
---|
552 | Service = Instance->Service;
|
---|
553 | Udp = UdpIo->Protocol.Udp4;
|
---|
554 |
|
---|
555 | Status = gBS->SetTimer (
|
---|
556 | Service->TimerToGetMap,
|
---|
557 | TimerRelative,
|
---|
558 | DNS_TIME_TO_GETMAP * TICKS_PER_SECOND
|
---|
559 | );
|
---|
560 | if (EFI_ERROR (Status)) {
|
---|
561 | return FALSE;
|
---|
562 | }
|
---|
563 |
|
---|
564 | while (EFI_ERROR (gBS->CheckEvent (Service->TimerToGetMap))) {
|
---|
565 | Udp->Poll (Udp);
|
---|
566 |
|
---|
567 | if (!EFI_ERROR (Udp->GetModeData (Udp, NULL, &Ip4Mode, NULL, NULL)) &&
|
---|
568 | Ip4Mode.IsConfigured)
|
---|
569 | {
|
---|
570 | Udp->Configure (Udp, NULL);
|
---|
571 | return (BOOLEAN)(Udp->Configure (Udp, UdpCfgData) == EFI_SUCCESS);
|
---|
572 | }
|
---|
573 | }
|
---|
574 |
|
---|
575 | return FALSE;
|
---|
576 | }
|
---|
577 |
|
---|
578 | /**
|
---|
579 | Configure the opened Udp6 instance until the corresponding Ip6 instance
|
---|
580 | has been configured.
|
---|
581 |
|
---|
582 | @param Instance The DNS instance
|
---|
583 | @param UdpIo The UDP_IO to poll
|
---|
584 | @param UdpCfgData The UDP configure data to reconfigure the UDP_IO
|
---|
585 |
|
---|
586 | @retval TRUE Configure the Udp6 instance successfully.
|
---|
587 | @retval FALSE Some error occurred.
|
---|
588 |
|
---|
589 | **/
|
---|
590 | BOOLEAN
|
---|
591 | Dns6GetMapping (
|
---|
592 | IN DNS_INSTANCE *Instance,
|
---|
593 | IN UDP_IO *UdpIo,
|
---|
594 | IN EFI_UDP6_CONFIG_DATA *UdpCfgData
|
---|
595 | )
|
---|
596 | {
|
---|
597 | DNS_SERVICE *Service;
|
---|
598 | EFI_IP6_MODE_DATA Ip6Mode;
|
---|
599 | EFI_UDP6_PROTOCOL *Udp;
|
---|
600 | EFI_STATUS Status;
|
---|
601 |
|
---|
602 | Service = Instance->Service;
|
---|
603 | Udp = UdpIo->Protocol.Udp6;
|
---|
604 |
|
---|
605 | Status = gBS->SetTimer (
|
---|
606 | Service->TimerToGetMap,
|
---|
607 | TimerRelative,
|
---|
608 | DNS_TIME_TO_GETMAP * TICKS_PER_SECOND
|
---|
609 | );
|
---|
610 | if (EFI_ERROR (Status)) {
|
---|
611 | return FALSE;
|
---|
612 | }
|
---|
613 |
|
---|
614 | while (EFI_ERROR (gBS->CheckEvent (Service->TimerToGetMap))) {
|
---|
615 | Udp->Poll (Udp);
|
---|
616 |
|
---|
617 | if (!EFI_ERROR (Udp->GetModeData (Udp, NULL, &Ip6Mode, NULL, NULL))) {
|
---|
618 | if (Ip6Mode.AddressList != NULL) {
|
---|
619 | FreePool (Ip6Mode.AddressList);
|
---|
620 | }
|
---|
621 |
|
---|
622 | if (Ip6Mode.GroupTable != NULL) {
|
---|
623 | FreePool (Ip6Mode.GroupTable);
|
---|
624 | }
|
---|
625 |
|
---|
626 | if (Ip6Mode.RouteTable != NULL) {
|
---|
627 | FreePool (Ip6Mode.RouteTable);
|
---|
628 | }
|
---|
629 |
|
---|
630 | if (Ip6Mode.NeighborCache != NULL) {
|
---|
631 | FreePool (Ip6Mode.NeighborCache);
|
---|
632 | }
|
---|
633 |
|
---|
634 | if (Ip6Mode.PrefixTable != NULL) {
|
---|
635 | FreePool (Ip6Mode.PrefixTable);
|
---|
636 | }
|
---|
637 |
|
---|
638 | if (Ip6Mode.IcmpTypeList != NULL) {
|
---|
639 | FreePool (Ip6Mode.IcmpTypeList);
|
---|
640 | }
|
---|
641 |
|
---|
642 | if (!Ip6Mode.IsStarted || Ip6Mode.IsConfigured) {
|
---|
643 | Udp->Configure (Udp, NULL);
|
---|
644 | if (Udp->Configure (Udp, UdpCfgData) == EFI_SUCCESS) {
|
---|
645 | return TRUE;
|
---|
646 | }
|
---|
647 | }
|
---|
648 | }
|
---|
649 | }
|
---|
650 |
|
---|
651 | return FALSE;
|
---|
652 | }
|
---|
653 |
|
---|
654 | /**
|
---|
655 | Configure the UDP.
|
---|
656 |
|
---|
657 | @param Instance The DNS session
|
---|
658 | @param UdpIo The UDP_IO instance
|
---|
659 |
|
---|
660 | @retval EFI_SUCCESS The UDP is successfully configured for the
|
---|
661 | session.
|
---|
662 |
|
---|
663 | **/
|
---|
664 | EFI_STATUS
|
---|
665 | Dns4ConfigUdp (
|
---|
666 | IN DNS_INSTANCE *Instance,
|
---|
667 | IN UDP_IO *UdpIo
|
---|
668 | )
|
---|
669 | {
|
---|
670 | EFI_DNS4_CONFIG_DATA *Config;
|
---|
671 | EFI_UDP4_CONFIG_DATA UdpConfig;
|
---|
672 | EFI_STATUS Status;
|
---|
673 |
|
---|
674 | Config = &Instance->Dns4CfgData;
|
---|
675 |
|
---|
676 | UdpConfig.AcceptBroadcast = FALSE;
|
---|
677 | UdpConfig.AcceptPromiscuous = FALSE;
|
---|
678 | UdpConfig.AcceptAnyPort = FALSE;
|
---|
679 | UdpConfig.AllowDuplicatePort = FALSE;
|
---|
680 | UdpConfig.TypeOfService = 0;
|
---|
681 | UdpConfig.TimeToLive = 128;
|
---|
682 | UdpConfig.DoNotFragment = FALSE;
|
---|
683 | UdpConfig.ReceiveTimeout = 0;
|
---|
684 | UdpConfig.TransmitTimeout = 0;
|
---|
685 | UdpConfig.UseDefaultAddress = Config->UseDefaultSetting;
|
---|
686 | UdpConfig.SubnetMask = Config->SubnetMask;
|
---|
687 | UdpConfig.StationPort = Config->LocalPort;
|
---|
688 | UdpConfig.RemotePort = DNS_SERVER_PORT;
|
---|
689 |
|
---|
690 | CopyMem (&UdpConfig.StationAddress, &Config->StationIp, sizeof (EFI_IPv4_ADDRESS));
|
---|
691 | CopyMem (&UdpConfig.RemoteAddress, &Instance->SessionDnsServer.v4, sizeof (EFI_IPv4_ADDRESS));
|
---|
692 |
|
---|
693 | Status = UdpIo->Protocol.Udp4->Configure (UdpIo->Protocol.Udp4, &UdpConfig);
|
---|
694 |
|
---|
695 | if ((Status == EFI_NO_MAPPING) && Dns4GetMapping (Instance, UdpIo, &UdpConfig)) {
|
---|
696 | return EFI_SUCCESS;
|
---|
697 | }
|
---|
698 |
|
---|
699 | return Status;
|
---|
700 | }
|
---|
701 |
|
---|
702 | /**
|
---|
703 | Configure the UDP.
|
---|
704 |
|
---|
705 | @param Instance The DNS session
|
---|
706 | @param UdpIo The UDP_IO instance
|
---|
707 |
|
---|
708 | @retval EFI_SUCCESS The UDP is successfully configured for the
|
---|
709 | session.
|
---|
710 |
|
---|
711 | **/
|
---|
712 | EFI_STATUS
|
---|
713 | Dns6ConfigUdp (
|
---|
714 | IN DNS_INSTANCE *Instance,
|
---|
715 | IN UDP_IO *UdpIo
|
---|
716 | )
|
---|
717 | {
|
---|
718 | EFI_DNS6_CONFIG_DATA *Config;
|
---|
719 | EFI_UDP6_CONFIG_DATA UdpConfig;
|
---|
720 | EFI_STATUS Status;
|
---|
721 |
|
---|
722 | Config = &Instance->Dns6CfgData;
|
---|
723 |
|
---|
724 | UdpConfig.AcceptPromiscuous = FALSE;
|
---|
725 | UdpConfig.AcceptAnyPort = FALSE;
|
---|
726 | UdpConfig.AllowDuplicatePort = FALSE;
|
---|
727 | UdpConfig.TrafficClass = 0;
|
---|
728 | UdpConfig.HopLimit = 128;
|
---|
729 | UdpConfig.ReceiveTimeout = 0;
|
---|
730 | UdpConfig.TransmitTimeout = 0;
|
---|
731 | UdpConfig.StationPort = Config->LocalPort;
|
---|
732 | UdpConfig.RemotePort = DNS_SERVER_PORT;
|
---|
733 | CopyMem (&UdpConfig.StationAddress, &Config->StationIp, sizeof (EFI_IPv6_ADDRESS));
|
---|
734 | CopyMem (&UdpConfig.RemoteAddress, &Instance->SessionDnsServer.v6, sizeof (EFI_IPv6_ADDRESS));
|
---|
735 |
|
---|
736 | Status = UdpIo->Protocol.Udp6->Configure (UdpIo->Protocol.Udp6, &UdpConfig);
|
---|
737 |
|
---|
738 | if ((Status == EFI_NO_MAPPING) && Dns6GetMapping (Instance, UdpIo, &UdpConfig)) {
|
---|
739 | return EFI_SUCCESS;
|
---|
740 | }
|
---|
741 |
|
---|
742 | return Status;
|
---|
743 | }
|
---|
744 |
|
---|
745 | /**
|
---|
746 | Update Dns4 cache to shared list of caches of all DNSv4 instances.
|
---|
747 |
|
---|
748 | @param Dns4CacheList All Dns4 cache list.
|
---|
749 | @param DeleteFlag If FALSE, this function is to add one entry to the DNS Cache.
|
---|
750 | If TRUE, this function will delete matching DNS Cache entry.
|
---|
751 | @param Override If TRUE, the matching DNS cache entry will be overwritten with the supplied parameter.
|
---|
752 | If FALSE, EFI_ACCESS_DENIED will be returned if the entry to be added is already exists.
|
---|
753 | @param DnsCacheEntry Entry Pointer to DNS Cache entry.
|
---|
754 |
|
---|
755 | @retval EFI_SUCCESS Update Dns4 cache successfully.
|
---|
756 | @retval Others Failed to update Dns4 cache.
|
---|
757 |
|
---|
758 | **/
|
---|
759 | EFI_STATUS
|
---|
760 | EFIAPI
|
---|
761 | UpdateDns4Cache (
|
---|
762 | IN LIST_ENTRY *Dns4CacheList,
|
---|
763 | IN BOOLEAN DeleteFlag,
|
---|
764 | IN BOOLEAN Override,
|
---|
765 | IN EFI_DNS4_CACHE_ENTRY DnsCacheEntry
|
---|
766 | )
|
---|
767 | {
|
---|
768 | DNS4_CACHE *NewDnsCache;
|
---|
769 | DNS4_CACHE *Item;
|
---|
770 | LIST_ENTRY *Entry;
|
---|
771 | LIST_ENTRY *Next;
|
---|
772 |
|
---|
773 | NewDnsCache = NULL;
|
---|
774 | Item = NULL;
|
---|
775 |
|
---|
776 | //
|
---|
777 | // Search the database for the matching EFI_DNS_CACHE_ENTRY
|
---|
778 | //
|
---|
779 | NET_LIST_FOR_EACH_SAFE (Entry, Next, Dns4CacheList) {
|
---|
780 | Item = NET_LIST_USER_STRUCT (Entry, DNS4_CACHE, AllCacheLink);
|
---|
781 | if ((StrCmp (DnsCacheEntry.HostName, Item->DnsCache.HostName) == 0) && \
|
---|
782 | (CompareMem (DnsCacheEntry.IpAddress, Item->DnsCache.IpAddress, sizeof (EFI_IPv4_ADDRESS)) == 0))
|
---|
783 | {
|
---|
784 | //
|
---|
785 | // This is the Dns cache entry
|
---|
786 | //
|
---|
787 | if (DeleteFlag) {
|
---|
788 | //
|
---|
789 | // Delete matching DNS Cache entry
|
---|
790 | //
|
---|
791 | RemoveEntryList (&Item->AllCacheLink);
|
---|
792 |
|
---|
793 | FreePool (Item->DnsCache.HostName);
|
---|
794 | FreePool (Item->DnsCache.IpAddress);
|
---|
795 | FreePool (Item);
|
---|
796 |
|
---|
797 | return EFI_SUCCESS;
|
---|
798 | } else if (Override) {
|
---|
799 | //
|
---|
800 | // Update this one
|
---|
801 | //
|
---|
802 | Item->DnsCache.Timeout = DnsCacheEntry.Timeout;
|
---|
803 |
|
---|
804 | return EFI_SUCCESS;
|
---|
805 | } else {
|
---|
806 | return EFI_ACCESS_DENIED;
|
---|
807 | }
|
---|
808 | }
|
---|
809 | }
|
---|
810 |
|
---|
811 | //
|
---|
812 | // Add new one
|
---|
813 | //
|
---|
814 | NewDnsCache = AllocatePool (sizeof (DNS4_CACHE));
|
---|
815 | if (NewDnsCache == NULL) {
|
---|
816 | return EFI_OUT_OF_RESOURCES;
|
---|
817 | }
|
---|
818 |
|
---|
819 | InitializeListHead (&NewDnsCache->AllCacheLink);
|
---|
820 |
|
---|
821 | NewDnsCache->DnsCache.HostName = AllocatePool (StrSize (DnsCacheEntry.HostName));
|
---|
822 | if (NewDnsCache->DnsCache.HostName == NULL) {
|
---|
823 | FreePool (NewDnsCache);
|
---|
824 | return EFI_OUT_OF_RESOURCES;
|
---|
825 | }
|
---|
826 |
|
---|
827 | CopyMem (NewDnsCache->DnsCache.HostName, DnsCacheEntry.HostName, StrSize (DnsCacheEntry.HostName));
|
---|
828 |
|
---|
829 | NewDnsCache->DnsCache.IpAddress = AllocatePool (sizeof (EFI_IPv4_ADDRESS));
|
---|
830 | if (NewDnsCache->DnsCache.IpAddress == NULL) {
|
---|
831 | FreePool (NewDnsCache->DnsCache.HostName);
|
---|
832 | FreePool (NewDnsCache);
|
---|
833 | return EFI_OUT_OF_RESOURCES;
|
---|
834 | }
|
---|
835 |
|
---|
836 | CopyMem (NewDnsCache->DnsCache.IpAddress, DnsCacheEntry.IpAddress, sizeof (EFI_IPv4_ADDRESS));
|
---|
837 |
|
---|
838 | NewDnsCache->DnsCache.Timeout = DnsCacheEntry.Timeout;
|
---|
839 |
|
---|
840 | InsertTailList (Dns4CacheList, &NewDnsCache->AllCacheLink);
|
---|
841 |
|
---|
842 | return EFI_SUCCESS;
|
---|
843 | }
|
---|
844 |
|
---|
845 | /**
|
---|
846 | Update Dns6 cache to shared list of caches of all DNSv6 instances.
|
---|
847 |
|
---|
848 | @param Dns6CacheList All Dns6 cache list.
|
---|
849 | @param DeleteFlag If FALSE, this function is to add one entry to the DNS Cache.
|
---|
850 | If TRUE, this function will delete matching DNS Cache entry.
|
---|
851 | @param Override If TRUE, the matching DNS cache entry will be overwritten with the supplied parameter.
|
---|
852 | If FALSE, EFI_ACCESS_DENIED will be returned if the entry to be added is already exists.
|
---|
853 | @param DnsCacheEntry Entry Pointer to DNS Cache entry.
|
---|
854 |
|
---|
855 | @retval EFI_SUCCESS Update Dns6 cache successfully.
|
---|
856 | @retval Others Failed to update Dns6 cache.
|
---|
857 | **/
|
---|
858 | EFI_STATUS
|
---|
859 | EFIAPI
|
---|
860 | UpdateDns6Cache (
|
---|
861 | IN LIST_ENTRY *Dns6CacheList,
|
---|
862 | IN BOOLEAN DeleteFlag,
|
---|
863 | IN BOOLEAN Override,
|
---|
864 | IN EFI_DNS6_CACHE_ENTRY DnsCacheEntry
|
---|
865 | )
|
---|
866 | {
|
---|
867 | DNS6_CACHE *NewDnsCache;
|
---|
868 | DNS6_CACHE *Item;
|
---|
869 | LIST_ENTRY *Entry;
|
---|
870 | LIST_ENTRY *Next;
|
---|
871 |
|
---|
872 | NewDnsCache = NULL;
|
---|
873 | Item = NULL;
|
---|
874 |
|
---|
875 | //
|
---|
876 | // Search the database for the matching EFI_DNS_CACHE_ENTRY
|
---|
877 | //
|
---|
878 | NET_LIST_FOR_EACH_SAFE (Entry, Next, Dns6CacheList) {
|
---|
879 | Item = NET_LIST_USER_STRUCT (Entry, DNS6_CACHE, AllCacheLink);
|
---|
880 | if ((StrCmp (DnsCacheEntry.HostName, Item->DnsCache.HostName) == 0) && \
|
---|
881 | (CompareMem (DnsCacheEntry.IpAddress, Item->DnsCache.IpAddress, sizeof (EFI_IPv6_ADDRESS)) == 0))
|
---|
882 | {
|
---|
883 | //
|
---|
884 | // This is the Dns cache entry
|
---|
885 | //
|
---|
886 | if (DeleteFlag) {
|
---|
887 | //
|
---|
888 | // Delete matching DNS Cache entry
|
---|
889 | //
|
---|
890 | RemoveEntryList (&Item->AllCacheLink);
|
---|
891 |
|
---|
892 | FreePool (Item->DnsCache.HostName);
|
---|
893 | FreePool (Item->DnsCache.IpAddress);
|
---|
894 | FreePool (Item);
|
---|
895 |
|
---|
896 | return EFI_SUCCESS;
|
---|
897 | } else if (Override) {
|
---|
898 | //
|
---|
899 | // Update this one
|
---|
900 | //
|
---|
901 | Item->DnsCache.Timeout = DnsCacheEntry.Timeout;
|
---|
902 |
|
---|
903 | return EFI_SUCCESS;
|
---|
904 | } else {
|
---|
905 | return EFI_ACCESS_DENIED;
|
---|
906 | }
|
---|
907 | }
|
---|
908 | }
|
---|
909 |
|
---|
910 | //
|
---|
911 | // Add new one
|
---|
912 | //
|
---|
913 | NewDnsCache = AllocatePool (sizeof (DNS6_CACHE));
|
---|
914 | if (NewDnsCache == NULL) {
|
---|
915 | return EFI_OUT_OF_RESOURCES;
|
---|
916 | }
|
---|
917 |
|
---|
918 | InitializeListHead (&NewDnsCache->AllCacheLink);
|
---|
919 |
|
---|
920 | NewDnsCache->DnsCache.HostName = AllocatePool (StrSize (DnsCacheEntry.HostName));
|
---|
921 | if (NewDnsCache->DnsCache.HostName == NULL) {
|
---|
922 | FreePool (NewDnsCache);
|
---|
923 | return EFI_OUT_OF_RESOURCES;
|
---|
924 | }
|
---|
925 |
|
---|
926 | CopyMem (NewDnsCache->DnsCache.HostName, DnsCacheEntry.HostName, StrSize (DnsCacheEntry.HostName));
|
---|
927 |
|
---|
928 | NewDnsCache->DnsCache.IpAddress = AllocatePool (sizeof (EFI_IPv6_ADDRESS));
|
---|
929 | if (NewDnsCache->DnsCache.IpAddress == NULL) {
|
---|
930 | FreePool (NewDnsCache->DnsCache.HostName);
|
---|
931 | FreePool (NewDnsCache);
|
---|
932 | return EFI_OUT_OF_RESOURCES;
|
---|
933 | }
|
---|
934 |
|
---|
935 | CopyMem (NewDnsCache->DnsCache.IpAddress, DnsCacheEntry.IpAddress, sizeof (EFI_IPv6_ADDRESS));
|
---|
936 |
|
---|
937 | NewDnsCache->DnsCache.Timeout = DnsCacheEntry.Timeout;
|
---|
938 |
|
---|
939 | InsertTailList (Dns6CacheList, &NewDnsCache->AllCacheLink);
|
---|
940 |
|
---|
941 | return EFI_SUCCESS;
|
---|
942 | }
|
---|
943 |
|
---|
944 | /**
|
---|
945 | Add Dns4 ServerIp to common list of addresses of all configured DNSv4 server.
|
---|
946 |
|
---|
947 | @param Dns4ServerList Common list of addresses of all configured DNSv4 server.
|
---|
948 | @param ServerIp DNS server Ip.
|
---|
949 |
|
---|
950 | @retval EFI_SUCCESS Add Dns4 ServerIp to common list successfully.
|
---|
951 | @retval Others Failed to add Dns4 ServerIp to common list.
|
---|
952 |
|
---|
953 | **/
|
---|
954 | EFI_STATUS
|
---|
955 | EFIAPI
|
---|
956 | AddDns4ServerIp (
|
---|
957 | IN LIST_ENTRY *Dns4ServerList,
|
---|
958 | IN EFI_IPv4_ADDRESS ServerIp
|
---|
959 | )
|
---|
960 | {
|
---|
961 | DNS4_SERVER_IP *NewServerIp;
|
---|
962 | DNS4_SERVER_IP *Item;
|
---|
963 | LIST_ENTRY *Entry;
|
---|
964 | LIST_ENTRY *Next;
|
---|
965 |
|
---|
966 | NewServerIp = NULL;
|
---|
967 | Item = NULL;
|
---|
968 |
|
---|
969 | //
|
---|
970 | // Search the database for the matching ServerIp
|
---|
971 | //
|
---|
972 | NET_LIST_FOR_EACH_SAFE (Entry, Next, Dns4ServerList) {
|
---|
973 | Item = NET_LIST_USER_STRUCT (Entry, DNS4_SERVER_IP, AllServerLink);
|
---|
974 | if (CompareMem (&Item->Dns4ServerIp, &ServerIp, sizeof (EFI_IPv4_ADDRESS)) == 0) {
|
---|
975 | //
|
---|
976 | // Already done.
|
---|
977 | //
|
---|
978 | return EFI_SUCCESS;
|
---|
979 | }
|
---|
980 | }
|
---|
981 |
|
---|
982 | //
|
---|
983 | // Add new one
|
---|
984 | //
|
---|
985 | NewServerIp = AllocatePool (sizeof (DNS4_SERVER_IP));
|
---|
986 | if (NewServerIp == NULL) {
|
---|
987 | return EFI_OUT_OF_RESOURCES;
|
---|
988 | }
|
---|
989 |
|
---|
990 | InitializeListHead (&NewServerIp->AllServerLink);
|
---|
991 |
|
---|
992 | CopyMem (&NewServerIp->Dns4ServerIp, &ServerIp, sizeof (EFI_IPv4_ADDRESS));
|
---|
993 |
|
---|
994 | InsertTailList (Dns4ServerList, &NewServerIp->AllServerLink);
|
---|
995 |
|
---|
996 | return EFI_SUCCESS;
|
---|
997 | }
|
---|
998 |
|
---|
999 | /**
|
---|
1000 | Add Dns6 ServerIp to common list of addresses of all configured DNSv6 server.
|
---|
1001 |
|
---|
1002 | @param Dns6ServerList Common list of addresses of all configured DNSv6 server.
|
---|
1003 | @param ServerIp DNS server Ip.
|
---|
1004 |
|
---|
1005 | @retval EFI_SUCCESS Add Dns6 ServerIp to common list successfully.
|
---|
1006 | @retval Others Failed to add Dns6 ServerIp to common list.
|
---|
1007 |
|
---|
1008 | **/
|
---|
1009 | EFI_STATUS
|
---|
1010 | EFIAPI
|
---|
1011 | AddDns6ServerIp (
|
---|
1012 | IN LIST_ENTRY *Dns6ServerList,
|
---|
1013 | IN EFI_IPv6_ADDRESS ServerIp
|
---|
1014 | )
|
---|
1015 | {
|
---|
1016 | DNS6_SERVER_IP *NewServerIp;
|
---|
1017 | DNS6_SERVER_IP *Item;
|
---|
1018 | LIST_ENTRY *Entry;
|
---|
1019 | LIST_ENTRY *Next;
|
---|
1020 |
|
---|
1021 | NewServerIp = NULL;
|
---|
1022 | Item = NULL;
|
---|
1023 |
|
---|
1024 | //
|
---|
1025 | // Search the database for the matching ServerIp
|
---|
1026 | //
|
---|
1027 | NET_LIST_FOR_EACH_SAFE (Entry, Next, Dns6ServerList) {
|
---|
1028 | Item = NET_LIST_USER_STRUCT (Entry, DNS6_SERVER_IP, AllServerLink);
|
---|
1029 | if (CompareMem (&Item->Dns6ServerIp, &ServerIp, sizeof (EFI_IPv6_ADDRESS)) == 0) {
|
---|
1030 | //
|
---|
1031 | // Already done.
|
---|
1032 | //
|
---|
1033 | return EFI_SUCCESS;
|
---|
1034 | }
|
---|
1035 | }
|
---|
1036 |
|
---|
1037 | //
|
---|
1038 | // Add new one
|
---|
1039 | //
|
---|
1040 | NewServerIp = AllocatePool (sizeof (DNS6_SERVER_IP));
|
---|
1041 | if (NewServerIp == NULL) {
|
---|
1042 | return EFI_OUT_OF_RESOURCES;
|
---|
1043 | }
|
---|
1044 |
|
---|
1045 | InitializeListHead (&NewServerIp->AllServerLink);
|
---|
1046 |
|
---|
1047 | CopyMem (&NewServerIp->Dns6ServerIp, &ServerIp, sizeof (EFI_IPv6_ADDRESS));
|
---|
1048 |
|
---|
1049 | InsertTailList (Dns6ServerList, &NewServerIp->AllServerLink);
|
---|
1050 |
|
---|
1051 | return EFI_SUCCESS;
|
---|
1052 | }
|
---|
1053 |
|
---|
1054 | /**
|
---|
1055 | Find out whether the response is valid or invalid.
|
---|
1056 |
|
---|
1057 | @param TokensMap All DNS transmittal Tokens entry.
|
---|
1058 | @param Identification Identification for queried packet.
|
---|
1059 | @param Type Type for queried packet.
|
---|
1060 | @param Class Class for queried packet.
|
---|
1061 | @param Item Return corresponding Token entry.
|
---|
1062 |
|
---|
1063 | @retval TRUE The response is valid.
|
---|
1064 | @retval FALSE The response is invalid.
|
---|
1065 |
|
---|
1066 | **/
|
---|
1067 | BOOLEAN
|
---|
1068 | IsValidDnsResponse (
|
---|
1069 | IN NET_MAP *TokensMap,
|
---|
1070 | IN UINT16 Identification,
|
---|
1071 | IN UINT16 Type,
|
---|
1072 | IN UINT16 Class,
|
---|
1073 | OUT NET_MAP_ITEM **Item
|
---|
1074 | )
|
---|
1075 | {
|
---|
1076 | LIST_ENTRY *Entry;
|
---|
1077 |
|
---|
1078 | NET_BUF *Packet;
|
---|
1079 | UINT8 *TxString;
|
---|
1080 | DNS_HEADER *DnsHeader;
|
---|
1081 | CHAR8 *QueryName;
|
---|
1082 | DNS_QUERY_SECTION *QuerySection;
|
---|
1083 |
|
---|
1084 | NET_LIST_FOR_EACH (Entry, &TokensMap->Used) {
|
---|
1085 | *Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);
|
---|
1086 | Packet = (NET_BUF *)((*Item)->Value);
|
---|
1087 | if (Packet == NULL) {
|
---|
1088 | continue;
|
---|
1089 | } else {
|
---|
1090 | TxString = NetbufGetByte (Packet, 0, NULL);
|
---|
1091 | ASSERT (TxString != NULL);
|
---|
1092 | DnsHeader = (DNS_HEADER *)TxString;
|
---|
1093 | QueryName = (CHAR8 *)(TxString + sizeof (*DnsHeader));
|
---|
1094 | QuerySection = (DNS_QUERY_SECTION *)(QueryName + AsciiStrLen (QueryName) + 1);
|
---|
1095 |
|
---|
1096 | if ((NTOHS (DnsHeader->Identification) == Identification) &&
|
---|
1097 | (NTOHS (QuerySection->Type) == Type) &&
|
---|
1098 | (NTOHS (QuerySection->Class) == Class))
|
---|
1099 | {
|
---|
1100 | return TRUE;
|
---|
1101 | }
|
---|
1102 | }
|
---|
1103 | }
|
---|
1104 |
|
---|
1105 | *Item = NULL;
|
---|
1106 |
|
---|
1107 | return FALSE;
|
---|
1108 | }
|
---|
1109 |
|
---|
1110 | /**
|
---|
1111 | Parse Dns Response.
|
---|
1112 |
|
---|
1113 | @param Instance The DNS instance
|
---|
1114 | @param RxString Received buffer.
|
---|
1115 | @param Length Received buffer length.
|
---|
1116 | @param Completed Flag to indicate that Dns response is valid.
|
---|
1117 |
|
---|
1118 | @retval EFI_SUCCESS Parse Dns Response successfully.
|
---|
1119 | @retval Others Failed to parse Dns Response.
|
---|
1120 |
|
---|
1121 | **/
|
---|
1122 | EFI_STATUS
|
---|
1123 | ParseDnsResponse (
|
---|
1124 | IN OUT DNS_INSTANCE *Instance,
|
---|
1125 | IN UINT8 *RxString,
|
---|
1126 | IN UINT32 Length,
|
---|
1127 | OUT BOOLEAN *Completed
|
---|
1128 | )
|
---|
1129 | {
|
---|
1130 | DNS_HEADER *DnsHeader;
|
---|
1131 |
|
---|
1132 | CHAR8 *QueryName;
|
---|
1133 | UINT32 QueryNameLen;
|
---|
1134 | DNS_QUERY_SECTION *QuerySection;
|
---|
1135 |
|
---|
1136 | CHAR8 *AnswerName;
|
---|
1137 | DNS_ANSWER_SECTION *AnswerSection;
|
---|
1138 | UINT8 *AnswerData;
|
---|
1139 |
|
---|
1140 | NET_MAP_ITEM *Item;
|
---|
1141 | DNS4_TOKEN_ENTRY *Dns4TokenEntry;
|
---|
1142 | DNS6_TOKEN_ENTRY *Dns6TokenEntry;
|
---|
1143 |
|
---|
1144 | UINT32 IpCount;
|
---|
1145 | UINT32 RRCount;
|
---|
1146 | UINT32 AnswerSectionNum;
|
---|
1147 | UINT32 CNameTtl;
|
---|
1148 |
|
---|
1149 | EFI_IPv4_ADDRESS *HostAddr4;
|
---|
1150 | EFI_IPv6_ADDRESS *HostAddr6;
|
---|
1151 |
|
---|
1152 | EFI_DNS4_CACHE_ENTRY *Dns4CacheEntry;
|
---|
1153 | EFI_DNS6_CACHE_ENTRY *Dns6CacheEntry;
|
---|
1154 |
|
---|
1155 | DNS_RESOURCE_RECORD *Dns4RR;
|
---|
1156 | DNS6_RESOURCE_RECORD *Dns6RR;
|
---|
1157 |
|
---|
1158 | EFI_STATUS Status;
|
---|
1159 | UINT32 RemainingLength;
|
---|
1160 |
|
---|
1161 | EFI_TPL OldTpl;
|
---|
1162 |
|
---|
1163 | Item = NULL;
|
---|
1164 | Dns4TokenEntry = NULL;
|
---|
1165 | Dns6TokenEntry = NULL;
|
---|
1166 |
|
---|
1167 | IpCount = 0;
|
---|
1168 | RRCount = 0;
|
---|
1169 | AnswerSectionNum = 0;
|
---|
1170 | CNameTtl = 0;
|
---|
1171 |
|
---|
1172 | HostAddr4 = NULL;
|
---|
1173 | HostAddr6 = NULL;
|
---|
1174 |
|
---|
1175 | Dns4CacheEntry = NULL;
|
---|
1176 | Dns6CacheEntry = NULL;
|
---|
1177 |
|
---|
1178 | Dns4RR = NULL;
|
---|
1179 | Dns6RR = NULL;
|
---|
1180 |
|
---|
1181 | *Completed = TRUE;
|
---|
1182 | Status = EFI_SUCCESS;
|
---|
1183 | RemainingLength = Length;
|
---|
1184 |
|
---|
1185 | //
|
---|
1186 | // Check whether the remaining packet length is available or not.
|
---|
1187 | //
|
---|
1188 | if (RemainingLength <= sizeof (DNS_HEADER)) {
|
---|
1189 | *Completed = FALSE;
|
---|
1190 | return EFI_ABORTED;
|
---|
1191 | } else {
|
---|
1192 | RemainingLength -= sizeof (DNS_HEADER);
|
---|
1193 | }
|
---|
1194 |
|
---|
1195 | //
|
---|
1196 | // Get header
|
---|
1197 | //
|
---|
1198 | DnsHeader = (DNS_HEADER *)RxString;
|
---|
1199 |
|
---|
1200 | DnsHeader->Identification = NTOHS (DnsHeader->Identification);
|
---|
1201 | DnsHeader->Flags.Uint16 = NTOHS (DnsHeader->Flags.Uint16);
|
---|
1202 | DnsHeader->QuestionsNum = NTOHS (DnsHeader->QuestionsNum);
|
---|
1203 | DnsHeader->AnswersNum = NTOHS (DnsHeader->AnswersNum);
|
---|
1204 | DnsHeader->AuthorityNum = NTOHS (DnsHeader->AuthorityNum);
|
---|
1205 | DnsHeader->AditionalNum = NTOHS (DnsHeader->AditionalNum);
|
---|
1206 |
|
---|
1207 | //
|
---|
1208 | // There is always one QuestionsNum in DNS message. The capability to handle more
|
---|
1209 | // than one requires to redesign the message format. Currently, it's not supported.
|
---|
1210 | //
|
---|
1211 | if (DnsHeader->QuestionsNum > 1) {
|
---|
1212 | *Completed = FALSE;
|
---|
1213 | return EFI_UNSUPPORTED;
|
---|
1214 | }
|
---|
1215 |
|
---|
1216 | //
|
---|
1217 | // Get Query name
|
---|
1218 | //
|
---|
1219 | QueryName = (CHAR8 *)(RxString + sizeof (*DnsHeader));
|
---|
1220 |
|
---|
1221 | QueryNameLen = (UINT32)AsciiStrLen (QueryName) + 1;
|
---|
1222 |
|
---|
1223 | //
|
---|
1224 | // Check whether the remaining packet length is available or not.
|
---|
1225 | //
|
---|
1226 | if (RemainingLength <= QueryNameLen + sizeof (DNS_QUERY_SECTION)) {
|
---|
1227 | *Completed = FALSE;
|
---|
1228 | return EFI_ABORTED;
|
---|
1229 | } else {
|
---|
1230 | RemainingLength -= (QueryNameLen + sizeof (DNS_QUERY_SECTION));
|
---|
1231 | }
|
---|
1232 |
|
---|
1233 | //
|
---|
1234 | // Get query section
|
---|
1235 | //
|
---|
1236 | QuerySection = (DNS_QUERY_SECTION *)(QueryName + QueryNameLen);
|
---|
1237 | QuerySection->Type = NTOHS (QuerySection->Type);
|
---|
1238 | QuerySection->Class = NTOHS (QuerySection->Class);
|
---|
1239 |
|
---|
1240 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
|
---|
1241 |
|
---|
1242 | //
|
---|
1243 | // Check DnsResponse Validity, if so, also get a valid NET_MAP_ITEM.
|
---|
1244 | //
|
---|
1245 | if (Instance->Service->IpVersion == IP_VERSION_4) {
|
---|
1246 | if (!IsValidDnsResponse (
|
---|
1247 | &Instance->Dns4TxTokens,
|
---|
1248 | DnsHeader->Identification,
|
---|
1249 | QuerySection->Type,
|
---|
1250 | QuerySection->Class,
|
---|
1251 | &Item
|
---|
1252 | ))
|
---|
1253 | {
|
---|
1254 | *Completed = FALSE;
|
---|
1255 | Status = EFI_ABORTED;
|
---|
1256 | goto ON_EXIT;
|
---|
1257 | }
|
---|
1258 |
|
---|
1259 | ASSERT (Item != NULL);
|
---|
1260 | Dns4TokenEntry = (DNS4_TOKEN_ENTRY *)(Item->Key);
|
---|
1261 | } else {
|
---|
1262 | if (!IsValidDnsResponse (
|
---|
1263 | &Instance->Dns6TxTokens,
|
---|
1264 | DnsHeader->Identification,
|
---|
1265 | QuerySection->Type,
|
---|
1266 | QuerySection->Class,
|
---|
1267 | &Item
|
---|
1268 | ))
|
---|
1269 | {
|
---|
1270 | *Completed = FALSE;
|
---|
1271 | Status = EFI_ABORTED;
|
---|
1272 | goto ON_EXIT;
|
---|
1273 | }
|
---|
1274 |
|
---|
1275 | ASSERT (Item != NULL);
|
---|
1276 | Dns6TokenEntry = (DNS6_TOKEN_ENTRY *)(Item->Key);
|
---|
1277 | }
|
---|
1278 |
|
---|
1279 | //
|
---|
1280 | // Continue Check Some Errors.
|
---|
1281 | //
|
---|
1282 | if ((DnsHeader->Flags.Bits.RCode != DNS_FLAGS_RCODE_NO_ERROR) || (DnsHeader->AnswersNum < 1) || \
|
---|
1283 | (DnsHeader->Flags.Bits.QR != DNS_FLAGS_QR_RESPONSE))
|
---|
1284 | {
|
---|
1285 | //
|
---|
1286 | // The domain name referenced in the query does not exist.
|
---|
1287 | //
|
---|
1288 | if (DnsHeader->Flags.Bits.RCode == DNS_FLAGS_RCODE_NAME_ERROR) {
|
---|
1289 | Status = EFI_NOT_FOUND;
|
---|
1290 | } else {
|
---|
1291 | Status = EFI_DEVICE_ERROR;
|
---|
1292 | }
|
---|
1293 |
|
---|
1294 | goto ON_COMPLETE;
|
---|
1295 | }
|
---|
1296 |
|
---|
1297 | //
|
---|
1298 | // Do some buffer allocations.
|
---|
1299 | //
|
---|
1300 | if (Instance->Service->IpVersion == IP_VERSION_4) {
|
---|
1301 | ASSERT (Dns4TokenEntry != NULL);
|
---|
1302 |
|
---|
1303 | if (Dns4TokenEntry->GeneralLookUp) {
|
---|
1304 | //
|
---|
1305 | // It's the GeneralLookUp querying.
|
---|
1306 | //
|
---|
1307 | Dns4TokenEntry->Token->RspData.GLookupData = AllocateZeroPool (sizeof (DNS_RESOURCE_RECORD));
|
---|
1308 | if (Dns4TokenEntry->Token->RspData.GLookupData == NULL) {
|
---|
1309 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1310 | goto ON_EXIT;
|
---|
1311 | }
|
---|
1312 |
|
---|
1313 | Dns4TokenEntry->Token->RspData.GLookupData->RRList = AllocateZeroPool (DnsHeader->AnswersNum * sizeof (DNS_RESOURCE_RECORD));
|
---|
1314 | if (Dns4TokenEntry->Token->RspData.GLookupData->RRList == NULL) {
|
---|
1315 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1316 | goto ON_EXIT;
|
---|
1317 | }
|
---|
1318 | } else {
|
---|
1319 | //
|
---|
1320 | // It's not the GeneralLookUp querying. Check the Query type.
|
---|
1321 | //
|
---|
1322 | if (QuerySection->Type == DNS_TYPE_A) {
|
---|
1323 | Dns4TokenEntry->Token->RspData.H2AData = AllocateZeroPool (sizeof (DNS_HOST_TO_ADDR_DATA));
|
---|
1324 | if (Dns4TokenEntry->Token->RspData.H2AData == NULL) {
|
---|
1325 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1326 | goto ON_EXIT;
|
---|
1327 | }
|
---|
1328 |
|
---|
1329 | Dns4TokenEntry->Token->RspData.H2AData->IpList = AllocateZeroPool (DnsHeader->AnswersNum * sizeof (EFI_IPv4_ADDRESS));
|
---|
1330 | if (Dns4TokenEntry->Token->RspData.H2AData->IpList == NULL) {
|
---|
1331 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1332 | goto ON_EXIT;
|
---|
1333 | }
|
---|
1334 | } else {
|
---|
1335 | Status = EFI_UNSUPPORTED;
|
---|
1336 | goto ON_EXIT;
|
---|
1337 | }
|
---|
1338 | }
|
---|
1339 | } else {
|
---|
1340 | ASSERT (Dns6TokenEntry != NULL);
|
---|
1341 |
|
---|
1342 | if (Dns6TokenEntry->GeneralLookUp) {
|
---|
1343 | //
|
---|
1344 | // It's the GeneralLookUp querying.
|
---|
1345 | //
|
---|
1346 | Dns6TokenEntry->Token->RspData.GLookupData = AllocateZeroPool (sizeof (DNS_RESOURCE_RECORD));
|
---|
1347 | if (Dns6TokenEntry->Token->RspData.GLookupData == NULL) {
|
---|
1348 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1349 | goto ON_EXIT;
|
---|
1350 | }
|
---|
1351 |
|
---|
1352 | Dns6TokenEntry->Token->RspData.GLookupData->RRList = AllocateZeroPool (DnsHeader->AnswersNum * sizeof (DNS_RESOURCE_RECORD));
|
---|
1353 | if (Dns6TokenEntry->Token->RspData.GLookupData->RRList == NULL) {
|
---|
1354 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1355 | goto ON_EXIT;
|
---|
1356 | }
|
---|
1357 | } else {
|
---|
1358 | //
|
---|
1359 | // It's not the GeneralLookUp querying. Check the Query type.
|
---|
1360 | //
|
---|
1361 | if (QuerySection->Type == DNS_TYPE_AAAA) {
|
---|
1362 | Dns6TokenEntry->Token->RspData.H2AData = AllocateZeroPool (sizeof (DNS6_HOST_TO_ADDR_DATA));
|
---|
1363 | if (Dns6TokenEntry->Token->RspData.H2AData == NULL) {
|
---|
1364 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1365 | goto ON_EXIT;
|
---|
1366 | }
|
---|
1367 |
|
---|
1368 | Dns6TokenEntry->Token->RspData.H2AData->IpList = AllocateZeroPool (DnsHeader->AnswersNum * sizeof (EFI_IPv6_ADDRESS));
|
---|
1369 | if (Dns6TokenEntry->Token->RspData.H2AData->IpList == NULL) {
|
---|
1370 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1371 | goto ON_EXIT;
|
---|
1372 | }
|
---|
1373 | } else {
|
---|
1374 | Status = EFI_UNSUPPORTED;
|
---|
1375 | goto ON_EXIT;
|
---|
1376 | }
|
---|
1377 | }
|
---|
1378 | }
|
---|
1379 |
|
---|
1380 | Status = EFI_NOT_FOUND;
|
---|
1381 |
|
---|
1382 | //
|
---|
1383 | // Get Answer name
|
---|
1384 | //
|
---|
1385 | AnswerName = (CHAR8 *)QuerySection + sizeof (*QuerySection);
|
---|
1386 |
|
---|
1387 | //
|
---|
1388 | // Processing AnswerSection.
|
---|
1389 | //
|
---|
1390 | while (AnswerSectionNum < DnsHeader->AnswersNum) {
|
---|
1391 | //
|
---|
1392 | // Check whether the remaining packet length is available or not.
|
---|
1393 | //
|
---|
1394 | if (RemainingLength <= sizeof (UINT16) + sizeof (DNS_ANSWER_SECTION)) {
|
---|
1395 | *Completed = FALSE;
|
---|
1396 | Status = EFI_ABORTED;
|
---|
1397 | goto ON_EXIT;
|
---|
1398 | } else {
|
---|
1399 | RemainingLength -= (sizeof (UINT16) + sizeof (DNS_ANSWER_SECTION));
|
---|
1400 | }
|
---|
1401 |
|
---|
1402 | //
|
---|
1403 | // Answer name should be PTR, else EFI_UNSUPPORTED returned.
|
---|
1404 | //
|
---|
1405 | if ((*(UINT8 *)AnswerName & 0xC0) != 0xC0) {
|
---|
1406 | Status = EFI_UNSUPPORTED;
|
---|
1407 | goto ON_EXIT;
|
---|
1408 | }
|
---|
1409 |
|
---|
1410 | //
|
---|
1411 | // Get Answer section.
|
---|
1412 | //
|
---|
1413 | AnswerSection = (DNS_ANSWER_SECTION *)(AnswerName + sizeof (UINT16));
|
---|
1414 | AnswerSection->Type = NTOHS (AnswerSection->Type);
|
---|
1415 | AnswerSection->Class = NTOHS (AnswerSection->Class);
|
---|
1416 | AnswerSection->Ttl = NTOHL (AnswerSection->Ttl);
|
---|
1417 | AnswerSection->DataLength = NTOHS (AnswerSection->DataLength);
|
---|
1418 |
|
---|
1419 | //
|
---|
1420 | // Check whether the remaining packet length is available or not.
|
---|
1421 | //
|
---|
1422 | if (RemainingLength < AnswerSection->DataLength) {
|
---|
1423 | *Completed = FALSE;
|
---|
1424 | Status = EFI_ABORTED;
|
---|
1425 | goto ON_EXIT;
|
---|
1426 | } else {
|
---|
1427 | RemainingLength -= AnswerSection->DataLength;
|
---|
1428 | }
|
---|
1429 |
|
---|
1430 | //
|
---|
1431 | // Check whether it's the GeneralLookUp querying.
|
---|
1432 | //
|
---|
1433 | if ((Instance->Service->IpVersion == IP_VERSION_4) && Dns4TokenEntry->GeneralLookUp) {
|
---|
1434 | Dns4RR = Dns4TokenEntry->Token->RspData.GLookupData->RRList;
|
---|
1435 | AnswerData = (UINT8 *)AnswerSection + sizeof (*AnswerSection);
|
---|
1436 |
|
---|
1437 | //
|
---|
1438 | // Fill the ResourceRecord.
|
---|
1439 | //
|
---|
1440 | Dns4RR[RRCount].QName = AllocateZeroPool (AsciiStrLen (QueryName) + 1);
|
---|
1441 | if (Dns4RR[RRCount].QName == NULL) {
|
---|
1442 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1443 | goto ON_EXIT;
|
---|
1444 | }
|
---|
1445 |
|
---|
1446 | CopyMem (Dns4RR[RRCount].QName, QueryName, AsciiStrLen (QueryName));
|
---|
1447 | Dns4RR[RRCount].QType = AnswerSection->Type;
|
---|
1448 | Dns4RR[RRCount].QClass = AnswerSection->Class;
|
---|
1449 | Dns4RR[RRCount].TTL = AnswerSection->Ttl;
|
---|
1450 | Dns4RR[RRCount].DataLength = AnswerSection->DataLength;
|
---|
1451 | Dns4RR[RRCount].RData = AllocateZeroPool (Dns4RR[RRCount].DataLength);
|
---|
1452 | if (Dns4RR[RRCount].RData == NULL) {
|
---|
1453 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1454 | goto ON_EXIT;
|
---|
1455 | }
|
---|
1456 |
|
---|
1457 | CopyMem (Dns4RR[RRCount].RData, AnswerData, Dns4RR[RRCount].DataLength);
|
---|
1458 |
|
---|
1459 | RRCount++;
|
---|
1460 | Status = EFI_SUCCESS;
|
---|
1461 | } else if ((Instance->Service->IpVersion == IP_VERSION_6) && Dns6TokenEntry->GeneralLookUp) {
|
---|
1462 | Dns6RR = Dns6TokenEntry->Token->RspData.GLookupData->RRList;
|
---|
1463 | AnswerData = (UINT8 *)AnswerSection + sizeof (*AnswerSection);
|
---|
1464 |
|
---|
1465 | //
|
---|
1466 | // Fill the ResourceRecord.
|
---|
1467 | //
|
---|
1468 | Dns6RR[RRCount].QName = AllocateZeroPool (AsciiStrLen (QueryName) + 1);
|
---|
1469 | if (Dns6RR[RRCount].QName == NULL) {
|
---|
1470 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1471 | goto ON_EXIT;
|
---|
1472 | }
|
---|
1473 |
|
---|
1474 | CopyMem (Dns6RR[RRCount].QName, QueryName, AsciiStrLen (QueryName));
|
---|
1475 | Dns6RR[RRCount].QType = AnswerSection->Type;
|
---|
1476 | Dns6RR[RRCount].QClass = AnswerSection->Class;
|
---|
1477 | Dns6RR[RRCount].TTL = AnswerSection->Ttl;
|
---|
1478 | Dns6RR[RRCount].DataLength = AnswerSection->DataLength;
|
---|
1479 | Dns6RR[RRCount].RData = AllocateZeroPool (Dns6RR[RRCount].DataLength);
|
---|
1480 | if (Dns6RR[RRCount].RData == NULL) {
|
---|
1481 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1482 | goto ON_EXIT;
|
---|
1483 | }
|
---|
1484 |
|
---|
1485 | CopyMem (Dns6RR[RRCount].RData, AnswerData, Dns6RR[RRCount].DataLength);
|
---|
1486 |
|
---|
1487 | RRCount++;
|
---|
1488 | Status = EFI_SUCCESS;
|
---|
1489 | } else {
|
---|
1490 | //
|
---|
1491 | // It's not the GeneralLookUp querying.
|
---|
1492 | // Check the Query type, parse the response packet.
|
---|
1493 | //
|
---|
1494 | switch (AnswerSection->Type) {
|
---|
1495 | case DNS_TYPE_A:
|
---|
1496 | //
|
---|
1497 | // This is address entry, get Data.
|
---|
1498 | //
|
---|
1499 | ASSERT (Dns4TokenEntry != NULL);
|
---|
1500 |
|
---|
1501 | if (AnswerSection->DataLength != 4) {
|
---|
1502 | Status = EFI_ABORTED;
|
---|
1503 | goto ON_EXIT;
|
---|
1504 | }
|
---|
1505 |
|
---|
1506 | HostAddr4 = Dns4TokenEntry->Token->RspData.H2AData->IpList;
|
---|
1507 | AnswerData = (UINT8 *)AnswerSection + sizeof (*AnswerSection);
|
---|
1508 | CopyMem (&HostAddr4[IpCount], AnswerData, sizeof (EFI_IPv4_ADDRESS));
|
---|
1509 |
|
---|
1510 | //
|
---|
1511 | // Allocate new CacheEntry pool to update DNS cache dynamically.
|
---|
1512 | //
|
---|
1513 | Dns4CacheEntry = AllocateZeroPool (sizeof (EFI_DNS4_CACHE_ENTRY));
|
---|
1514 | if (Dns4CacheEntry == NULL) {
|
---|
1515 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1516 | goto ON_EXIT;
|
---|
1517 | }
|
---|
1518 |
|
---|
1519 | Dns4CacheEntry->HostName = AllocateZeroPool (2 * (StrLen (Dns4TokenEntry->QueryHostName) + 1));
|
---|
1520 | if (Dns4CacheEntry->HostName == NULL) {
|
---|
1521 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1522 | goto ON_EXIT;
|
---|
1523 | }
|
---|
1524 |
|
---|
1525 | CopyMem (Dns4CacheEntry->HostName, Dns4TokenEntry->QueryHostName, 2 * (StrLen (Dns4TokenEntry->QueryHostName) + 1));
|
---|
1526 | Dns4CacheEntry->IpAddress = AllocateZeroPool (sizeof (EFI_IPv4_ADDRESS));
|
---|
1527 | if (Dns4CacheEntry->IpAddress == NULL) {
|
---|
1528 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1529 | goto ON_EXIT;
|
---|
1530 | }
|
---|
1531 |
|
---|
1532 | CopyMem (Dns4CacheEntry->IpAddress, AnswerData, sizeof (EFI_IPv4_ADDRESS));
|
---|
1533 |
|
---|
1534 | if ((CNameTtl != 0) && (AnswerSection->Ttl != 0)) {
|
---|
1535 | Dns4CacheEntry->Timeout = MIN (CNameTtl, AnswerSection->Ttl);
|
---|
1536 | } else {
|
---|
1537 | Dns4CacheEntry->Timeout = MAX (CNameTtl, AnswerSection->Ttl);
|
---|
1538 | }
|
---|
1539 |
|
---|
1540 | UpdateDns4Cache (&mDriverData->Dns4CacheList, FALSE, TRUE, *Dns4CacheEntry);
|
---|
1541 |
|
---|
1542 | //
|
---|
1543 | // Free allocated CacheEntry pool.
|
---|
1544 | //
|
---|
1545 | FreePool (Dns4CacheEntry->HostName);
|
---|
1546 | Dns4CacheEntry->HostName = NULL;
|
---|
1547 |
|
---|
1548 | FreePool (Dns4CacheEntry->IpAddress);
|
---|
1549 | Dns4CacheEntry->IpAddress = NULL;
|
---|
1550 |
|
---|
1551 | FreePool (Dns4CacheEntry);
|
---|
1552 | Dns4CacheEntry = NULL;
|
---|
1553 |
|
---|
1554 | IpCount++;
|
---|
1555 | Status = EFI_SUCCESS;
|
---|
1556 | break;
|
---|
1557 | case DNS_TYPE_AAAA:
|
---|
1558 | //
|
---|
1559 | // This is address entry, get Data.
|
---|
1560 | //
|
---|
1561 | ASSERT (Dns6TokenEntry != NULL);
|
---|
1562 |
|
---|
1563 | if (AnswerSection->DataLength != 16) {
|
---|
1564 | Status = EFI_ABORTED;
|
---|
1565 | goto ON_EXIT;
|
---|
1566 | }
|
---|
1567 |
|
---|
1568 | HostAddr6 = Dns6TokenEntry->Token->RspData.H2AData->IpList;
|
---|
1569 | AnswerData = (UINT8 *)AnswerSection + sizeof (*AnswerSection);
|
---|
1570 | CopyMem (&HostAddr6[IpCount], AnswerData, sizeof (EFI_IPv6_ADDRESS));
|
---|
1571 |
|
---|
1572 | //
|
---|
1573 | // Allocate new CacheEntry pool to update DNS cache dynamically.
|
---|
1574 | //
|
---|
1575 | Dns6CacheEntry = AllocateZeroPool (sizeof (EFI_DNS6_CACHE_ENTRY));
|
---|
1576 | if (Dns6CacheEntry == NULL) {
|
---|
1577 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1578 | goto ON_EXIT;
|
---|
1579 | }
|
---|
1580 |
|
---|
1581 | Dns6CacheEntry->HostName = AllocateZeroPool (2 * (StrLen (Dns6TokenEntry->QueryHostName) + 1));
|
---|
1582 | if (Dns6CacheEntry->HostName == NULL) {
|
---|
1583 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1584 | goto ON_EXIT;
|
---|
1585 | }
|
---|
1586 |
|
---|
1587 | CopyMem (Dns6CacheEntry->HostName, Dns6TokenEntry->QueryHostName, 2 * (StrLen (Dns6TokenEntry->QueryHostName) + 1));
|
---|
1588 | Dns6CacheEntry->IpAddress = AllocateZeroPool (sizeof (EFI_IPv6_ADDRESS));
|
---|
1589 | if (Dns6CacheEntry->IpAddress == NULL) {
|
---|
1590 | Status = EFI_OUT_OF_RESOURCES;
|
---|
1591 | goto ON_EXIT;
|
---|
1592 | }
|
---|
1593 |
|
---|
1594 | CopyMem (Dns6CacheEntry->IpAddress, AnswerData, sizeof (EFI_IPv6_ADDRESS));
|
---|
1595 |
|
---|
1596 | if ((CNameTtl != 0) && (AnswerSection->Ttl != 0)) {
|
---|
1597 | Dns6CacheEntry->Timeout = MIN (CNameTtl, AnswerSection->Ttl);
|
---|
1598 | } else {
|
---|
1599 | Dns6CacheEntry->Timeout = MAX (CNameTtl, AnswerSection->Ttl);
|
---|
1600 | }
|
---|
1601 |
|
---|
1602 | UpdateDns6Cache (&mDriverData->Dns6CacheList, FALSE, TRUE, *Dns6CacheEntry);
|
---|
1603 |
|
---|
1604 | //
|
---|
1605 | // Free allocated CacheEntry pool.
|
---|
1606 | //
|
---|
1607 | FreePool (Dns6CacheEntry->HostName);
|
---|
1608 | Dns6CacheEntry->HostName = NULL;
|
---|
1609 |
|
---|
1610 | FreePool (Dns6CacheEntry->IpAddress);
|
---|
1611 | Dns6CacheEntry->IpAddress = NULL;
|
---|
1612 |
|
---|
1613 | FreePool (Dns6CacheEntry);
|
---|
1614 | Dns6CacheEntry = NULL;
|
---|
1615 |
|
---|
1616 | IpCount++;
|
---|
1617 | Status = EFI_SUCCESS;
|
---|
1618 | break;
|
---|
1619 | case DNS_TYPE_CNAME:
|
---|
1620 | //
|
---|
1621 | // According RFC 1034 - 3.6.2, if the query name is an alias, the name server will include the CNAME
|
---|
1622 | // record in the response and restart the query at the domain name specified in the data field of the
|
---|
1623 | // CNAME record. So, just record the TTL value of the CNAME, then skip to parse the next record.
|
---|
1624 | //
|
---|
1625 | CNameTtl = AnswerSection->Ttl;
|
---|
1626 | break;
|
---|
1627 | default:
|
---|
1628 | Status = EFI_UNSUPPORTED;
|
---|
1629 | goto ON_EXIT;
|
---|
1630 | }
|
---|
1631 | }
|
---|
1632 |
|
---|
1633 | //
|
---|
1634 | // Find next one
|
---|
1635 | //
|
---|
1636 | AnswerName = (CHAR8 *)AnswerSection + sizeof (*AnswerSection) + AnswerSection->DataLength;
|
---|
1637 | AnswerSectionNum++;
|
---|
1638 | }
|
---|
1639 |
|
---|
1640 | if (Instance->Service->IpVersion == IP_VERSION_4) {
|
---|
1641 | ASSERT (Dns4TokenEntry != NULL);
|
---|
1642 |
|
---|
1643 | if (Dns4TokenEntry->GeneralLookUp) {
|
---|
1644 | Dns4TokenEntry->Token->RspData.GLookupData->RRCount = RRCount;
|
---|
1645 | } else {
|
---|
1646 | if (QuerySection->Type == DNS_TYPE_A) {
|
---|
1647 | Dns4TokenEntry->Token->RspData.H2AData->IpCount = IpCount;
|
---|
1648 | } else {
|
---|
1649 | Status = EFI_UNSUPPORTED;
|
---|
1650 | goto ON_EXIT;
|
---|
1651 | }
|
---|
1652 | }
|
---|
1653 | } else {
|
---|
1654 | ASSERT (Dns6TokenEntry != NULL);
|
---|
1655 |
|
---|
1656 | if (Dns6TokenEntry->GeneralLookUp) {
|
---|
1657 | Dns6TokenEntry->Token->RspData.GLookupData->RRCount = RRCount;
|
---|
1658 | } else {
|
---|
1659 | if (QuerySection->Type == DNS_TYPE_AAAA) {
|
---|
1660 | Dns6TokenEntry->Token->RspData.H2AData->IpCount = IpCount;
|
---|
1661 | } else {
|
---|
1662 | Status = EFI_UNSUPPORTED;
|
---|
1663 | goto ON_EXIT;
|
---|
1664 | }
|
---|
1665 | }
|
---|
1666 | }
|
---|
1667 |
|
---|
1668 | ON_COMPLETE:
|
---|
1669 | //
|
---|
1670 | // Parsing is complete, free the sending packet and signal Event here.
|
---|
1671 | //
|
---|
1672 | if ((Item != NULL) && (Item->Value != NULL)) {
|
---|
1673 | NetbufFree ((NET_BUF *)(Item->Value));
|
---|
1674 | }
|
---|
1675 |
|
---|
1676 | if (Instance->Service->IpVersion == IP_VERSION_4) {
|
---|
1677 | ASSERT (Dns4TokenEntry != NULL);
|
---|
1678 | Dns4RemoveTokenEntry (&Instance->Dns4TxTokens, Dns4TokenEntry);
|
---|
1679 | Dns4TokenEntry->Token->Status = Status;
|
---|
1680 | if (Dns4TokenEntry->Token->Event != NULL) {
|
---|
1681 | gBS->SignalEvent (Dns4TokenEntry->Token->Event);
|
---|
1682 | DispatchDpc ();
|
---|
1683 | }
|
---|
1684 | } else {
|
---|
1685 | ASSERT (Dns6TokenEntry != NULL);
|
---|
1686 | Dns6RemoveTokenEntry (&Instance->Dns6TxTokens, Dns6TokenEntry);
|
---|
1687 | Dns6TokenEntry->Token->Status = Status;
|
---|
1688 | if (Dns6TokenEntry->Token->Event != NULL) {
|
---|
1689 | gBS->SignalEvent (Dns6TokenEntry->Token->Event);
|
---|
1690 | DispatchDpc ();
|
---|
1691 | }
|
---|
1692 | }
|
---|
1693 |
|
---|
1694 | ON_EXIT:
|
---|
1695 | //
|
---|
1696 | // Free the allocated buffer if error happen.
|
---|
1697 | //
|
---|
1698 | if (EFI_ERROR (Status)) {
|
---|
1699 | if (Dns4TokenEntry != NULL) {
|
---|
1700 | if (Dns4TokenEntry->GeneralLookUp) {
|
---|
1701 | if (Dns4TokenEntry->Token->RspData.GLookupData != NULL) {
|
---|
1702 | if (Dns4TokenEntry->Token->RspData.GLookupData->RRList != NULL) {
|
---|
1703 | while (RRCount != 0) {
|
---|
1704 | RRCount--;
|
---|
1705 | if (Dns4TokenEntry->Token->RspData.GLookupData->RRList[RRCount].QName != NULL) {
|
---|
1706 | FreePool (Dns4TokenEntry->Token->RspData.GLookupData->RRList[RRCount].QName);
|
---|
1707 | }
|
---|
1708 |
|
---|
1709 | if (Dns4TokenEntry->Token->RspData.GLookupData->RRList[RRCount].RData != NULL) {
|
---|
1710 | FreePool (Dns4TokenEntry->Token->RspData.GLookupData->RRList[RRCount].RData);
|
---|
1711 | }
|
---|
1712 | }
|
---|
1713 |
|
---|
1714 | FreePool (Dns4TokenEntry->Token->RspData.GLookupData->RRList);
|
---|
1715 | }
|
---|
1716 |
|
---|
1717 | FreePool (Dns4TokenEntry->Token->RspData.GLookupData);
|
---|
1718 | }
|
---|
1719 | } else {
|
---|
1720 | if ((QuerySection->Type == DNS_TYPE_A) && (Dns4TokenEntry->Token->RspData.H2AData != NULL)) {
|
---|
1721 | if (Dns4TokenEntry->Token->RspData.H2AData->IpList != NULL) {
|
---|
1722 | FreePool (Dns4TokenEntry->Token->RspData.H2AData->IpList);
|
---|
1723 | }
|
---|
1724 |
|
---|
1725 | FreePool (Dns4TokenEntry->Token->RspData.H2AData);
|
---|
1726 | Dns4TokenEntry->Token->RspData.H2AData = NULL;
|
---|
1727 | }
|
---|
1728 | }
|
---|
1729 | }
|
---|
1730 |
|
---|
1731 | if (Dns6TokenEntry != NULL) {
|
---|
1732 | if (Dns6TokenEntry->GeneralLookUp) {
|
---|
1733 | if (Dns6TokenEntry->Token->RspData.GLookupData != NULL) {
|
---|
1734 | if (Dns6TokenEntry->Token->RspData.GLookupData->RRList != NULL) {
|
---|
1735 | while (RRCount != 0) {
|
---|
1736 | RRCount--;
|
---|
1737 | if (Dns6TokenEntry->Token->RspData.GLookupData->RRList[RRCount].QName != NULL) {
|
---|
1738 | FreePool (Dns6TokenEntry->Token->RspData.GLookupData->RRList[RRCount].QName);
|
---|
1739 | }
|
---|
1740 |
|
---|
1741 | if (Dns6TokenEntry->Token->RspData.GLookupData->RRList[RRCount].RData != NULL) {
|
---|
1742 | FreePool (Dns6TokenEntry->Token->RspData.GLookupData->RRList[RRCount].RData);
|
---|
1743 | }
|
---|
1744 | }
|
---|
1745 |
|
---|
1746 | FreePool (Dns6TokenEntry->Token->RspData.GLookupData->RRList);
|
---|
1747 | }
|
---|
1748 |
|
---|
1749 | FreePool (Dns6TokenEntry->Token->RspData.GLookupData);
|
---|
1750 | }
|
---|
1751 | } else {
|
---|
1752 | if ((QuerySection->Type == DNS_TYPE_AAAA) && (Dns6TokenEntry->Token->RspData.H2AData != NULL)) {
|
---|
1753 | if (Dns6TokenEntry->Token->RspData.H2AData->IpList != NULL) {
|
---|
1754 | FreePool (Dns6TokenEntry->Token->RspData.H2AData->IpList);
|
---|
1755 | }
|
---|
1756 |
|
---|
1757 | FreePool (Dns6TokenEntry->Token->RspData.H2AData);
|
---|
1758 | Dns6TokenEntry->Token->RspData.H2AData = NULL;
|
---|
1759 | }
|
---|
1760 | }
|
---|
1761 | }
|
---|
1762 |
|
---|
1763 | if (Dns4CacheEntry != NULL) {
|
---|
1764 | if (Dns4CacheEntry->HostName != NULL) {
|
---|
1765 | FreePool (Dns4CacheEntry->HostName);
|
---|
1766 | }
|
---|
1767 |
|
---|
1768 | if (Dns4CacheEntry->IpAddress != NULL) {
|
---|
1769 | FreePool (Dns4CacheEntry->IpAddress);
|
---|
1770 | }
|
---|
1771 |
|
---|
1772 | FreePool (Dns4CacheEntry);
|
---|
1773 | }
|
---|
1774 |
|
---|
1775 | if (Dns6CacheEntry != NULL) {
|
---|
1776 | if (Dns6CacheEntry->HostName != NULL) {
|
---|
1777 | FreePool (Dns6CacheEntry->HostName);
|
---|
1778 | }
|
---|
1779 |
|
---|
1780 | if (Dns6CacheEntry->IpAddress != NULL) {
|
---|
1781 | FreePool (Dns6CacheEntry->IpAddress);
|
---|
1782 | }
|
---|
1783 |
|
---|
1784 | FreePool (Dns6CacheEntry);
|
---|
1785 | }
|
---|
1786 | }
|
---|
1787 |
|
---|
1788 | gBS->RestoreTPL (OldTpl);
|
---|
1789 | return Status;
|
---|
1790 | }
|
---|
1791 |
|
---|
1792 | /**
|
---|
1793 | Parse response packet.
|
---|
1794 |
|
---|
1795 | @param Packet The packets received.
|
---|
1796 | @param EndPoint The local/remote UDP access point
|
---|
1797 | @param IoStatus The status of the UDP receive
|
---|
1798 | @param Context The opaque parameter to the function.
|
---|
1799 |
|
---|
1800 | **/
|
---|
1801 | VOID
|
---|
1802 | EFIAPI
|
---|
1803 | DnsOnPacketReceived (
|
---|
1804 | NET_BUF *Packet,
|
---|
1805 | UDP_END_POINT *EndPoint,
|
---|
1806 | EFI_STATUS IoStatus,
|
---|
1807 | VOID *Context
|
---|
1808 | )
|
---|
1809 | {
|
---|
1810 | DNS_INSTANCE *Instance;
|
---|
1811 |
|
---|
1812 | UINT8 *RcvString;
|
---|
1813 | UINT32 Len;
|
---|
1814 |
|
---|
1815 | BOOLEAN Completed;
|
---|
1816 |
|
---|
1817 | Instance = (DNS_INSTANCE *)Context;
|
---|
1818 | NET_CHECK_SIGNATURE (Instance, DNS_INSTANCE_SIGNATURE);
|
---|
1819 |
|
---|
1820 | RcvString = NULL;
|
---|
1821 | Completed = FALSE;
|
---|
1822 |
|
---|
1823 | if (EFI_ERROR (IoStatus)) {
|
---|
1824 | goto ON_EXIT;
|
---|
1825 | }
|
---|
1826 |
|
---|
1827 | ASSERT (Packet != NULL);
|
---|
1828 |
|
---|
1829 | Len = Packet->TotalSize;
|
---|
1830 |
|
---|
1831 | RcvString = NetbufGetByte (Packet, 0, NULL);
|
---|
1832 | ASSERT (RcvString != NULL);
|
---|
1833 |
|
---|
1834 | //
|
---|
1835 | // Parse Dns Response
|
---|
1836 | //
|
---|
1837 | ParseDnsResponse (Instance, RcvString, Len, &Completed);
|
---|
1838 |
|
---|
1839 | ON_EXIT:
|
---|
1840 |
|
---|
1841 | if (Packet != NULL) {
|
---|
1842 | NetbufFree (Packet);
|
---|
1843 | }
|
---|
1844 |
|
---|
1845 | if (!Completed) {
|
---|
1846 | UdpIoRecvDatagram (Instance->UdpIo, DnsOnPacketReceived, Instance, 0);
|
---|
1847 | }
|
---|
1848 | }
|
---|
1849 |
|
---|
1850 | /**
|
---|
1851 | Release the net buffer when packet is sent.
|
---|
1852 |
|
---|
1853 | @param Packet The packets received.
|
---|
1854 | @param EndPoint The local/remote UDP access point
|
---|
1855 | @param IoStatus The status of the UDP receive
|
---|
1856 | @param Context The opaque parameter to the function.
|
---|
1857 |
|
---|
1858 | **/
|
---|
1859 | VOID
|
---|
1860 | EFIAPI
|
---|
1861 | DnsOnPacketSent (
|
---|
1862 | NET_BUF *Packet,
|
---|
1863 | UDP_END_POINT *EndPoint,
|
---|
1864 | EFI_STATUS IoStatus,
|
---|
1865 | VOID *Context
|
---|
1866 | )
|
---|
1867 | {
|
---|
1868 | DNS_INSTANCE *Instance;
|
---|
1869 | LIST_ENTRY *Entry;
|
---|
1870 | NET_MAP_ITEM *Item;
|
---|
1871 | DNS4_TOKEN_ENTRY *Dns4TokenEntry;
|
---|
1872 | DNS6_TOKEN_ENTRY *Dns6TokenEntry;
|
---|
1873 |
|
---|
1874 | Dns4TokenEntry = NULL;
|
---|
1875 | Dns6TokenEntry = NULL;
|
---|
1876 |
|
---|
1877 | Instance = (DNS_INSTANCE *)Context;
|
---|
1878 | NET_CHECK_SIGNATURE (Instance, DNS_INSTANCE_SIGNATURE);
|
---|
1879 |
|
---|
1880 | if (Instance->Service->IpVersion == IP_VERSION_4) {
|
---|
1881 | NET_LIST_FOR_EACH (Entry, &Instance->Dns4TxTokens.Used) {
|
---|
1882 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);
|
---|
1883 | if (Packet == (NET_BUF *)(Item->Value)) {
|
---|
1884 | Dns4TokenEntry = ((DNS4_TOKEN_ENTRY *)Item->Key);
|
---|
1885 | Dns4TokenEntry->PacketToLive = Dns4TokenEntry->Token->RetryInterval;
|
---|
1886 | break;
|
---|
1887 | }
|
---|
1888 | }
|
---|
1889 | } else {
|
---|
1890 | NET_LIST_FOR_EACH (Entry, &Instance->Dns6TxTokens.Used) {
|
---|
1891 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);
|
---|
1892 | if (Packet == (NET_BUF *)(Item->Value)) {
|
---|
1893 | Dns6TokenEntry = ((DNS6_TOKEN_ENTRY *)Item->Key);
|
---|
1894 | Dns6TokenEntry->PacketToLive = Dns6TokenEntry->Token->RetryInterval;
|
---|
1895 | break;
|
---|
1896 | }
|
---|
1897 | }
|
---|
1898 | }
|
---|
1899 |
|
---|
1900 | NetbufFree (Packet);
|
---|
1901 | }
|
---|
1902 |
|
---|
1903 | /**
|
---|
1904 | Query request information.
|
---|
1905 |
|
---|
1906 | @param Instance The DNS instance
|
---|
1907 | @param Packet The packet for querying request information.
|
---|
1908 |
|
---|
1909 | @retval EFI_SUCCESS Query request information successfully.
|
---|
1910 | @retval Others Failed to query request information.
|
---|
1911 |
|
---|
1912 | **/
|
---|
1913 | EFI_STATUS
|
---|
1914 | DoDnsQuery (
|
---|
1915 | IN DNS_INSTANCE *Instance,
|
---|
1916 | IN NET_BUF *Packet
|
---|
1917 | )
|
---|
1918 | {
|
---|
1919 | EFI_STATUS Status;
|
---|
1920 |
|
---|
1921 | //
|
---|
1922 | // Ready to receive the DNS response.
|
---|
1923 | //
|
---|
1924 | if (Instance->UdpIo->RecvRequest == NULL) {
|
---|
1925 | Status = UdpIoRecvDatagram (Instance->UdpIo, DnsOnPacketReceived, Instance, 0);
|
---|
1926 | if (EFI_ERROR (Status)) {
|
---|
1927 | return Status;
|
---|
1928 | }
|
---|
1929 | }
|
---|
1930 |
|
---|
1931 | //
|
---|
1932 | // Transmit the DNS packet.
|
---|
1933 | //
|
---|
1934 | NET_GET_REF (Packet);
|
---|
1935 |
|
---|
1936 | Status = UdpIoSendDatagram (Instance->UdpIo, Packet, NULL, NULL, DnsOnPacketSent, Instance);
|
---|
1937 |
|
---|
1938 | return Status;
|
---|
1939 | }
|
---|
1940 |
|
---|
1941 | /**
|
---|
1942 | Construct the Packet according query section.
|
---|
1943 |
|
---|
1944 | @param Instance The DNS instance
|
---|
1945 | @param QueryName Queried Name
|
---|
1946 | @param Type Queried Type
|
---|
1947 | @param Class Queried Class
|
---|
1948 | @param Packet The packet for query
|
---|
1949 |
|
---|
1950 | @retval EFI_SUCCESS The packet is constructed.
|
---|
1951 | @retval Others Failed to construct the Packet.
|
---|
1952 |
|
---|
1953 | **/
|
---|
1954 | EFI_STATUS
|
---|
1955 | ConstructDNSQuery (
|
---|
1956 | IN DNS_INSTANCE *Instance,
|
---|
1957 | IN CHAR8 *QueryName,
|
---|
1958 | IN UINT16 Type,
|
---|
1959 | IN UINT16 Class,
|
---|
1960 | OUT NET_BUF **Packet
|
---|
1961 | )
|
---|
1962 | {
|
---|
1963 | NET_FRAGMENT Frag;
|
---|
1964 | DNS_HEADER *DnsHeader;
|
---|
1965 | DNS_QUERY_SECTION *DnsQuery;
|
---|
1966 |
|
---|
1967 | //
|
---|
1968 | // Messages carried by UDP are restricted to 512 bytes (not counting the IP
|
---|
1969 | // or UDP headers).
|
---|
1970 | //
|
---|
1971 | Frag.Bulk = AllocatePool (DNS_MAX_MESSAGE_SIZE * sizeof (UINT8));
|
---|
1972 | if (Frag.Bulk == NULL) {
|
---|
1973 | return EFI_OUT_OF_RESOURCES;
|
---|
1974 | }
|
---|
1975 |
|
---|
1976 | //
|
---|
1977 | // Fill header
|
---|
1978 | //
|
---|
1979 | DnsHeader = (DNS_HEADER *)Frag.Bulk;
|
---|
1980 | DnsHeader->Identification = (UINT16)NET_RANDOM (NetRandomInitSeed ());
|
---|
1981 | DnsHeader->Flags.Uint16 = 0x0000;
|
---|
1982 | DnsHeader->Flags.Bits.RD = 1;
|
---|
1983 | DnsHeader->Flags.Bits.OpCode = DNS_FLAGS_OPCODE_STANDARD;
|
---|
1984 | DnsHeader->Flags.Bits.QR = DNS_FLAGS_QR_QUERY;
|
---|
1985 | DnsHeader->QuestionsNum = 1;
|
---|
1986 | DnsHeader->AnswersNum = 0;
|
---|
1987 | DnsHeader->AuthorityNum = 0;
|
---|
1988 | DnsHeader->AditionalNum = 0;
|
---|
1989 |
|
---|
1990 | DnsHeader->Identification = HTONS (DnsHeader->Identification);
|
---|
1991 | DnsHeader->Flags.Uint16 = HTONS (DnsHeader->Flags.Uint16);
|
---|
1992 | DnsHeader->QuestionsNum = HTONS (DnsHeader->QuestionsNum);
|
---|
1993 | DnsHeader->AnswersNum = HTONS (DnsHeader->AnswersNum);
|
---|
1994 | DnsHeader->AuthorityNum = HTONS (DnsHeader->AuthorityNum);
|
---|
1995 | DnsHeader->AditionalNum = HTONS (DnsHeader->AditionalNum);
|
---|
1996 |
|
---|
1997 | Frag.Len = sizeof (*DnsHeader);
|
---|
1998 |
|
---|
1999 | //
|
---|
2000 | // Fill Query name
|
---|
2001 | //
|
---|
2002 | CopyMem (Frag.Bulk + Frag.Len, QueryName, AsciiStrLen (QueryName));
|
---|
2003 | Frag.Len = (UINT32)(Frag.Len + AsciiStrLen (QueryName));
|
---|
2004 | *(Frag.Bulk + Frag.Len) = 0;
|
---|
2005 | Frag.Len++;
|
---|
2006 |
|
---|
2007 | //
|
---|
2008 | // Rest query section
|
---|
2009 | //
|
---|
2010 | DnsQuery = (DNS_QUERY_SECTION *)(Frag.Bulk + Frag.Len);
|
---|
2011 |
|
---|
2012 | DnsQuery->Type = HTONS (Type);
|
---|
2013 | DnsQuery->Class = HTONS (Class);
|
---|
2014 |
|
---|
2015 | Frag.Len += sizeof (*DnsQuery);
|
---|
2016 |
|
---|
2017 | //
|
---|
2018 | // Wrap the Frag in a net buffer.
|
---|
2019 | //
|
---|
2020 | *Packet = NetbufFromExt (&Frag, 1, 0, 0, DnsDummyExtFree, NULL);
|
---|
2021 | if (*Packet == NULL) {
|
---|
2022 | FreePool (Frag.Bulk);
|
---|
2023 | return EFI_OUT_OF_RESOURCES;
|
---|
2024 | }
|
---|
2025 |
|
---|
2026 | //
|
---|
2027 | // Store the UdpIo in ProtoData.
|
---|
2028 | //
|
---|
2029 | *((UINTN *)&((*Packet)->ProtoData[0])) = (UINTN)(Instance->UdpIo);
|
---|
2030 |
|
---|
2031 | return EFI_SUCCESS;
|
---|
2032 | }
|
---|
2033 |
|
---|
2034 | /**
|
---|
2035 | Retransmit the packet.
|
---|
2036 |
|
---|
2037 | @param Instance The DNS instance
|
---|
2038 | @param Packet Retransmit the packet
|
---|
2039 |
|
---|
2040 | @retval EFI_SUCCESS The packet is retransmitted.
|
---|
2041 | @retval Others Failed to retransmit.
|
---|
2042 |
|
---|
2043 | **/
|
---|
2044 | EFI_STATUS
|
---|
2045 | DnsRetransmit (
|
---|
2046 | IN DNS_INSTANCE *Instance,
|
---|
2047 | IN NET_BUF *Packet
|
---|
2048 | )
|
---|
2049 | {
|
---|
2050 | EFI_STATUS Status;
|
---|
2051 |
|
---|
2052 | UINT8 *Buffer;
|
---|
2053 |
|
---|
2054 | ASSERT (Packet != NULL);
|
---|
2055 |
|
---|
2056 | //
|
---|
2057 | // Set the requests to the listening port, other packets to the connected port
|
---|
2058 | //
|
---|
2059 | Buffer = NetbufGetByte (Packet, 0, NULL);
|
---|
2060 | ASSERT (Buffer != NULL);
|
---|
2061 |
|
---|
2062 | NET_GET_REF (Packet);
|
---|
2063 |
|
---|
2064 | Status = UdpIoSendDatagram (
|
---|
2065 | Instance->UdpIo,
|
---|
2066 | Packet,
|
---|
2067 | NULL,
|
---|
2068 | NULL,
|
---|
2069 | DnsOnPacketSent,
|
---|
2070 | Instance
|
---|
2071 | );
|
---|
2072 |
|
---|
2073 | if (EFI_ERROR (Status)) {
|
---|
2074 | NET_PUT_REF (Packet);
|
---|
2075 | }
|
---|
2076 |
|
---|
2077 | return Status;
|
---|
2078 | }
|
---|
2079 |
|
---|
2080 | /**
|
---|
2081 | The timer ticking function for the DNS services.
|
---|
2082 |
|
---|
2083 | @param Event The ticking event
|
---|
2084 | @param Context The DNS service instance
|
---|
2085 |
|
---|
2086 | **/
|
---|
2087 | VOID
|
---|
2088 | EFIAPI
|
---|
2089 | DnsOnTimerRetransmit (
|
---|
2090 | IN EFI_EVENT Event,
|
---|
2091 | IN VOID *Context
|
---|
2092 | )
|
---|
2093 | {
|
---|
2094 | DNS_SERVICE *Service;
|
---|
2095 |
|
---|
2096 | LIST_ENTRY *Entry;
|
---|
2097 | LIST_ENTRY *Next;
|
---|
2098 |
|
---|
2099 | DNS_INSTANCE *Instance;
|
---|
2100 | LIST_ENTRY *EntryNetMap;
|
---|
2101 | NET_MAP_ITEM *ItemNetMap;
|
---|
2102 | DNS4_TOKEN_ENTRY *Dns4TokenEntry;
|
---|
2103 | DNS6_TOKEN_ENTRY *Dns6TokenEntry;
|
---|
2104 |
|
---|
2105 | Dns4TokenEntry = NULL;
|
---|
2106 | Dns6TokenEntry = NULL;
|
---|
2107 |
|
---|
2108 | Service = (DNS_SERVICE *)Context;
|
---|
2109 |
|
---|
2110 | if (Service->IpVersion == IP_VERSION_4) {
|
---|
2111 | //
|
---|
2112 | // Iterate through all the children of the DNS service instance. Time
|
---|
2113 | // out the packet. If maximum retries reached, clean the Token up.
|
---|
2114 | //
|
---|
2115 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Service->Dns4ChildrenList) {
|
---|
2116 | Instance = NET_LIST_USER_STRUCT (Entry, DNS_INSTANCE, Link);
|
---|
2117 |
|
---|
2118 | EntryNetMap = Instance->Dns4TxTokens.Used.ForwardLink;
|
---|
2119 | while (EntryNetMap != &Instance->Dns4TxTokens.Used) {
|
---|
2120 | ItemNetMap = NET_LIST_USER_STRUCT (EntryNetMap, NET_MAP_ITEM, Link);
|
---|
2121 | Dns4TokenEntry = (DNS4_TOKEN_ENTRY *)(ItemNetMap->Key);
|
---|
2122 | if ((Dns4TokenEntry->PacketToLive == 0) || (--Dns4TokenEntry->PacketToLive > 0)) {
|
---|
2123 | EntryNetMap = EntryNetMap->ForwardLink;
|
---|
2124 | continue;
|
---|
2125 | }
|
---|
2126 |
|
---|
2127 | //
|
---|
2128 | // Retransmit the packet if haven't reach the maximum retry count,
|
---|
2129 | // otherwise exit the transfer.
|
---|
2130 | //
|
---|
2131 | if (++Dns4TokenEntry->RetryCounting <= Dns4TokenEntry->Token->RetryCount) {
|
---|
2132 | DnsRetransmit (Instance, (NET_BUF *)ItemNetMap->Value);
|
---|
2133 | EntryNetMap = EntryNetMap->ForwardLink;
|
---|
2134 | } else {
|
---|
2135 | //
|
---|
2136 | // Maximum retries reached, clean the Token up.
|
---|
2137 | //
|
---|
2138 | Dns4RemoveTokenEntry (&Instance->Dns4TxTokens, Dns4TokenEntry);
|
---|
2139 | Dns4TokenEntry->Token->Status = EFI_TIMEOUT;
|
---|
2140 | gBS->SignalEvent (Dns4TokenEntry->Token->Event);
|
---|
2141 | DispatchDpc ();
|
---|
2142 |
|
---|
2143 | //
|
---|
2144 | // Free the sending packet.
|
---|
2145 | //
|
---|
2146 | if (ItemNetMap->Value != NULL) {
|
---|
2147 | NetbufFree ((NET_BUF *)(ItemNetMap->Value));
|
---|
2148 | }
|
---|
2149 |
|
---|
2150 | EntryNetMap = Instance->Dns4TxTokens.Used.ForwardLink;
|
---|
2151 | }
|
---|
2152 | }
|
---|
2153 | }
|
---|
2154 | } else {
|
---|
2155 | //
|
---|
2156 | // Iterate through all the children of the DNS service instance. Time
|
---|
2157 | // out the packet. If maximum retries reached, clean the Token up.
|
---|
2158 | //
|
---|
2159 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Service->Dns6ChildrenList) {
|
---|
2160 | Instance = NET_LIST_USER_STRUCT (Entry, DNS_INSTANCE, Link);
|
---|
2161 |
|
---|
2162 | EntryNetMap = Instance->Dns6TxTokens.Used.ForwardLink;
|
---|
2163 | while (EntryNetMap != &Instance->Dns6TxTokens.Used) {
|
---|
2164 | ItemNetMap = NET_LIST_USER_STRUCT (EntryNetMap, NET_MAP_ITEM, Link);
|
---|
2165 | Dns6TokenEntry = (DNS6_TOKEN_ENTRY *)(ItemNetMap->Key);
|
---|
2166 | if ((Dns6TokenEntry->PacketToLive == 0) || (--Dns6TokenEntry->PacketToLive > 0)) {
|
---|
2167 | EntryNetMap = EntryNetMap->ForwardLink;
|
---|
2168 | continue;
|
---|
2169 | }
|
---|
2170 |
|
---|
2171 | //
|
---|
2172 | // Retransmit the packet if haven't reach the maximum retry count,
|
---|
2173 | // otherwise exit the transfer.
|
---|
2174 | //
|
---|
2175 | if (++Dns6TokenEntry->RetryCounting <= Dns6TokenEntry->Token->RetryCount) {
|
---|
2176 | DnsRetransmit (Instance, (NET_BUF *)ItemNetMap->Value);
|
---|
2177 | EntryNetMap = EntryNetMap->ForwardLink;
|
---|
2178 | } else {
|
---|
2179 | //
|
---|
2180 | // Maximum retries reached, clean the Token up.
|
---|
2181 | //
|
---|
2182 | Dns6RemoveTokenEntry (&Instance->Dns6TxTokens, Dns6TokenEntry);
|
---|
2183 | Dns6TokenEntry->Token->Status = EFI_TIMEOUT;
|
---|
2184 | gBS->SignalEvent (Dns6TokenEntry->Token->Event);
|
---|
2185 | DispatchDpc ();
|
---|
2186 |
|
---|
2187 | //
|
---|
2188 | // Free the sending packet.
|
---|
2189 | //
|
---|
2190 | if (ItemNetMap->Value != NULL) {
|
---|
2191 | NetbufFree ((NET_BUF *)(ItemNetMap->Value));
|
---|
2192 | }
|
---|
2193 |
|
---|
2194 | EntryNetMap = Instance->Dns6TxTokens.Used.ForwardLink;
|
---|
2195 | }
|
---|
2196 | }
|
---|
2197 | }
|
---|
2198 | }
|
---|
2199 | }
|
---|
2200 |
|
---|
2201 | /**
|
---|
2202 | The timer ticking function for the DNS driver.
|
---|
2203 |
|
---|
2204 | @param Event The ticking event
|
---|
2205 | @param Context NULL
|
---|
2206 |
|
---|
2207 | **/
|
---|
2208 | VOID
|
---|
2209 | EFIAPI
|
---|
2210 | DnsOnTimerUpdate (
|
---|
2211 | IN EFI_EVENT Event,
|
---|
2212 | IN VOID *Context
|
---|
2213 | )
|
---|
2214 | {
|
---|
2215 | LIST_ENTRY *Entry;
|
---|
2216 | LIST_ENTRY *Next;
|
---|
2217 | DNS4_CACHE *Item4;
|
---|
2218 | DNS6_CACHE *Item6;
|
---|
2219 |
|
---|
2220 | Item4 = NULL;
|
---|
2221 | Item6 = NULL;
|
---|
2222 |
|
---|
2223 | //
|
---|
2224 | // Iterate through all the DNS4 cache list.
|
---|
2225 | //
|
---|
2226 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &mDriverData->Dns4CacheList) {
|
---|
2227 | Item4 = NET_LIST_USER_STRUCT (Entry, DNS4_CACHE, AllCacheLink);
|
---|
2228 | Item4->DnsCache.Timeout--;
|
---|
2229 | }
|
---|
2230 |
|
---|
2231 | Entry = mDriverData->Dns4CacheList.ForwardLink;
|
---|
2232 | while (Entry != &mDriverData->Dns4CacheList) {
|
---|
2233 | Item4 = NET_LIST_USER_STRUCT (Entry, DNS4_CACHE, AllCacheLink);
|
---|
2234 | if (Item4->DnsCache.Timeout == 0) {
|
---|
2235 | RemoveEntryList (&Item4->AllCacheLink);
|
---|
2236 | FreePool (Item4->DnsCache.HostName);
|
---|
2237 | FreePool (Item4->DnsCache.IpAddress);
|
---|
2238 | FreePool (Item4);
|
---|
2239 | Entry = mDriverData->Dns4CacheList.ForwardLink;
|
---|
2240 | } else {
|
---|
2241 | Entry = Entry->ForwardLink;
|
---|
2242 | }
|
---|
2243 | }
|
---|
2244 |
|
---|
2245 | //
|
---|
2246 | // Iterate through all the DNS6 cache list.
|
---|
2247 | //
|
---|
2248 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &mDriverData->Dns6CacheList) {
|
---|
2249 | Item6 = NET_LIST_USER_STRUCT (Entry, DNS6_CACHE, AllCacheLink);
|
---|
2250 | Item6->DnsCache.Timeout--;
|
---|
2251 | }
|
---|
2252 |
|
---|
2253 | Entry = mDriverData->Dns6CacheList.ForwardLink;
|
---|
2254 | while (Entry != &mDriverData->Dns6CacheList) {
|
---|
2255 | Item6 = NET_LIST_USER_STRUCT (Entry, DNS6_CACHE, AllCacheLink);
|
---|
2256 | if (Item6->DnsCache.Timeout == 0) {
|
---|
2257 | RemoveEntryList (&Item6->AllCacheLink);
|
---|
2258 | FreePool (Item6->DnsCache.HostName);
|
---|
2259 | FreePool (Item6->DnsCache.IpAddress);
|
---|
2260 | FreePool (Item6);
|
---|
2261 | Entry = mDriverData->Dns6CacheList.ForwardLink;
|
---|
2262 | } else {
|
---|
2263 | Entry = Entry->ForwardLink;
|
---|
2264 | }
|
---|
2265 | }
|
---|
2266 | }
|
---|