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1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // This file implements the CIPv6ProtocolIf class, which handles the transmission |
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15 // of IPv6 data to and from the TCP/IP stack. |
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16 // |
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17 // |
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18 |
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19 /** |
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20 @file |
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21 */ |
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22 |
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23 #include <e32hal.h> // UserHal::MachineInfo() |
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24 #include <etelpckt.h> |
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25 #include <in_iface.h> |
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26 #include <in6_if.h> |
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27 #include "RawIPNifMain.h" |
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28 #include "IPv6ProtocolIf.h" |
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29 #ifdef WCDMA_STUB |
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30 #include <UMTSNifControlIf.h> |
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31 #endif |
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32 #define LOG_IP_ADDRESS(desc,addr) _LOG_L2C5(_L8(" " desc " = %d:%d:%d:%d from context"), \ |
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33 addr[3], addr[2], addr[1], addr[0]); |
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34 |
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35 CIPv6ProtocolIf::CIPv6ProtocolIf(CRawIPNifMain& aNifMain, CBttLogger* aTheLogger) |
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36 /** |
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37 * Constructor |
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38 */ |
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39 : CProtocolIfBase(aNifMain,aTheLogger), |
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40 iTheLogger(aTheLogger), |
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41 iSpeedMetric(KDefaultSpeedMetric) |
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42 { |
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43 } |
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44 |
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45 CIPv6ProtocolIf::~CIPv6ProtocolIf() |
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46 /** |
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47 * Destructor |
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48 */ |
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49 { |
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50 } |
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51 |
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52 void CIPv6ProtocolIf::BindL(TAny* aId) |
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53 /** |
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54 * Binds protocol to the Nif |
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55 * |
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56 * @param aId A point the the protocol(TCP/IP) |
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57 */ |
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58 { |
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59 _LOG_L1C2(_L8("CIPv6ProtocolIf::BindL [aId=%X]"), aId); |
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60 |
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61 CProtocolIfBase::BindL(aId); // Call the superclass's method. |
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62 iNotify = iNifMain.Notify(); |
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63 } |
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64 |
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65 TInt CIPv6ProtocolIf::Control(TUint aLevel, TUint aName, TDes8& aOption, |
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66 TAny* /*aSource*/) |
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67 /** |
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68 * The main function called by the TCP/IP protocol to control the interface. |
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69 * Can perform a variety of general IP tasks (such as getting IP config) |
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70 * and "3G" specific tasks (such as deleting the context). |
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71 * |
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72 * @param aLevel The level of the interface to control - always KSOLInterface |
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73 * @param aName The command to perform |
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74 * @param aOption Data to be input/output as a result of the command |
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75 * @param aSource The source of the command (unused) |
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76 * @return Standard error codes |
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77 */ |
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78 { |
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79 _LOG_L1C3(_L8("CIPv6ProtocolIf::Control [aLevel=%d, aName=%d]"), |
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80 aLevel, aName); |
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81 |
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82 if (aLevel == KSOLInterface) |
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83 { |
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84 switch (aName) |
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85 { |
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86 // General IP configuration commands are below this point. |
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87 |
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88 case KSoIfInfo6: |
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89 // Gets information about the interface, such as name and MTU. |
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90 return WriteIfInfo(aOption); |
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91 |
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92 case KSoIfConfig: |
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93 // Gets interface configuration, eg. IP address and DNS servers. |
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94 return WriteIfConfig(aOption); |
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95 |
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96 case KSoIfGetConnectionInfo: |
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97 // Gets IAP and network information. |
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98 return WriteConnectionInfo(aOption); |
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99 |
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100 case KSoIfHardwareAddr: |
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101 // unsupported because we don't have a h/w address |
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102 case KSoIfCompareAddr: |
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103 // this never actually appears to be called |
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104 break; |
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105 |
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106 // 3G-specific configuration commands are below this point. |
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107 #ifdef WCDMA_STUB |
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108 case KRegisterEventHandler: |
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109 // Raw IP NIF Events are not supported |
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110 case KContextSetEvents: |
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111 // Raw IP NIF Events are not supported |
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112 break; |
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113 |
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114 case KContextCreate: |
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115 // We don't support creating new secondary contexts. |
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116 break; |
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117 |
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118 case KContextDelete: |
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119 // Deletes the primary PDP context. This will shut down the Nif. |
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120 return DeleteContext(aOption); |
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121 |
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122 case KContextActivate: |
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123 // If the IPv6 interface is up, then the context will already have |
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124 // been activated. So this command should fail with |
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125 // KErrAlreadyExists |
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126 { |
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127 TUint8* ptr = CONST_CAST(TUint8*, aOption.Ptr()); |
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128 TContextParameters* contextParams = |
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129 REINTERPRET_CAST(TContextParameters*, ptr); |
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130 |
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131 if (contextParams->iContextInfo.iContextId != |
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132 STATIC_CAST(TInt8, GetNifMain().GetBcaController()->Nsapi())) |
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133 { |
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134 contextParams->iReasonCode = KErrNotFound; |
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135 } |
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136 else |
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137 { |
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138 contextParams->iContextInfo.iStatus = |
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139 GetNifMain().GetContextStatus(); |
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140 contextParams->iReasonCode = KErrAlreadyExists; |
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141 } |
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142 return KErrNone; |
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143 } |
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144 |
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145 case KNifSetDefaultQoS: |
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146 case KContextQoSSet: |
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147 // Setting the QoS is meaningless over GPRS, so we just return that |
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148 // we don't support these operations. |
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149 break; |
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150 |
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151 case KContextTFTModify: |
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152 // As we only have one primary context, we don't support anything |
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153 // to do with traffic flow templates, which are used by secondary |
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154 // contexts. |
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155 break; |
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156 |
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157 case KContextModifyActive: |
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158 // This command is only valid aftermodifying TFT/QoS parameters. |
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159 // As we don't support any of these operations, |
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160 // this command is never valid. |
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161 break; |
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162 #endif |
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163 default: |
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164 break; |
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165 } |
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166 } |
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167 return KErrNotSupported; |
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168 } |
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169 |
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170 TInt CIPv6ProtocolIf::WriteIfConfig(TDes8& aIfConfig) |
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171 /** |
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172 * Writes the configuration of the interface (eg. IP address, DNS servers) |
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173 * into the supplied descriptor. |
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174 * |
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175 * @param aIfConfig Will contain the interface configuration |
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176 * @return KErrNotSupported if an incorrect structure is passed, |
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177 * otherwise KErrNone |
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178 */ |
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179 { |
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180 _LOG_L1C1(_L8("CIPv6ProtocolIf::WriteIfConfig")); |
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181 __ASSERT_DEBUG((TUint)aIfConfig.MaxLength() >= sizeof (TSoInet6IfConfig), User::Panic(KIPv6ProtocolIfName, 0)); |
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182 |
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183 if ((TUint)aIfConfig.MaxLength() < sizeof(TSoInet6IfConfig)) |
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184 { |
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185 return KErrArgument; |
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186 } |
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187 |
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188 TUint8* ptr = CONST_CAST(TUint8*, aIfConfig.Ptr()); |
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189 TSoInet6IfConfig* config = REINTERPRET_CAST(TSoInet6IfConfig*, ptr); |
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190 |
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191 TEui64Addr& localId = TEui64Addr::Cast(config->iLocalId); |
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192 localId = iSettings.iLocalIfId; |
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193 |
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194 // If required, configure static DNS addresses |
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195 if (!iSettings.iPrimaryDns.IsUnspecified()) |
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196 { |
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197 config->iNameSer1.SetAddress(iSettings.iPrimaryDns); |
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198 if (!iSettings.iSecondaryDns.IsUnspecified()) |
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199 config->iNameSer2.SetAddress(iSettings.iSecondaryDns); |
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200 } |
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201 |
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202 config->idPaddingBits = 0; |
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203 |
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204 return KErrNone; |
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205 } |
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206 |
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207 TInt CIPv6ProtocolIf::WriteIfInfo(TDes8& aIfInfo) |
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208 /** |
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209 * Writes information about the interface into the supplied descriptor. |
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210 * |
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211 * @param aIfInfo Will contain the interface information |
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212 * @return KErrArgument if an incorrect structure is passed, otherwise KErrNone |
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213 */ |
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214 { |
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215 _LOG_L1C1(_L8("CIPv6ProtocolIf::WriteIfInfo")); |
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216 __ASSERT_DEBUG((TUint)aIfInfo.MaxLength() >= sizeof (TSoIfInfo6), User::Panic(KIPv6ProtocolIfName, 0)); |
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217 |
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218 if ((TUint)aIfInfo.MaxLength() < sizeof(TSoIfInfo6)) |
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219 { |
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220 return KErrArgument; |
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221 } |
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222 |
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223 TSoIfInfo6* info = (TSoIfInfo6*) aIfInfo.Ptr(); |
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224 info->iFeatures = KIfCanBroadcast | KIfCanMulticast; |
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225 info->iSpeedMetric = iSpeedMetric; |
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226 info->iMtu = KDefaultMtu; |
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227 info->iRMtu = KDefaultMtu; |
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228 WriteIfName(info->iName); |
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229 |
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230 return KErrNone; |
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231 } |
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232 |
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233 TInt CIPv6ProtocolIf::WriteConnectionInfo(TDes8& aConnectionInfo) |
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234 /** |
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235 * Writes information about the IAP and network we're associated with. This |
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236 * is used to route data in a multi-homing environment. |
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237 * |
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238 * @param aConnectionInfo Will contain the connection information |
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239 * @return Standard CommDB error codes |
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240 */ |
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241 { |
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242 _LOG_L1C1(_L8("CIPv6ProtocolIf::WriteConnectionInfo")); |
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243 |
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244 TSoIfConnectionInfo* connectionInfo = |
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245 (TSoIfConnectionInfo*) aConnectionInfo.Ptr(); |
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246 |
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247 TInt err; |
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248 // Append the 2 commdb filed into this descriptor |
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249 TBuf<2*KCommsDbSvrMaxColumnNameLength+1> fieldName; |
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250 |
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251 fieldName.Copy(TPtrC(IAP)); |
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252 fieldName.Append(KSlashChar); |
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253 fieldName.Append(TPtrC(COMMDB_ID)); |
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254 err = GetNifMain().GetAgent()->ReadInt(fieldName, connectionInfo->iIAPId); |
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255 if (err != KErrNone) |
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256 { |
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257 return err; |
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258 } |
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259 |
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260 fieldName.Copy(TPtrC(IAP)); |
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261 fieldName.Append(KSlashChar); |
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262 fieldName.Append(TPtrC(IAP_NETWORK)); |
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263 err = GetNifMain().GetAgent()->ReadInt(fieldName, connectionInfo->iNetworkId); |
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264 if (err != KErrNone) |
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265 { |
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266 return err; |
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267 } |
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268 |
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269 return KErrNone; |
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270 } |
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271 #ifdef WCDMA_STUB |
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272 |
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273 TInt CIPv6ProtocolIf::DeleteContext(TDes8& aContextParameters) |
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274 /** |
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275 * Deletes a context. As the NIF is responsible for one primary context, |
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276 * this is equivalent to closing down the NIF. |
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277 * |
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278 * @param aContextParameters Parameters of the context to delete |
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279 * @return KErrArgument if an incorrect structure is passed, otherwise KErrNone |
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280 */ |
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281 { |
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282 _LOG_L1C1(_L8("CIPv6ProtocolIf::DeleteContext")); |
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283 |
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284 if (aContextParameters.Length() != sizeof(TContextParameters)) |
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285 { |
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286 return KErrArgument; |
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287 } |
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288 |
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289 TUint8* ptr = CONST_CAST(TUint8*, aContextParameters.Ptr()); |
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290 TContextParameters* params = REINTERPRET_CAST(TContextParameters*, ptr); |
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291 |
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292 if (params->iContextInfo.iContextId != |
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293 STATIC_CAST(TInt8, GetNifMain().GetBcaController()->Nsapi())) |
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294 { |
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295 params->iReasonCode = KErrBadName; |
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296 } |
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297 else |
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298 { |
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299 params->iReasonCode = KErrNone; |
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300 GetNifMain().Stop(KErrNone, MNifIfNotify::EDisconnect); |
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301 } |
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302 |
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303 return KErrNone; |
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304 } |
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305 |
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306 #endif |
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307 |
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308 void CIPv6ProtocolIf::ReadCommDbGprsSettingsL() |
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309 /** |
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310 * Reads GPRS IP settings from CommDB via the agent. |
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311 */ |
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312 { |
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313 _LOG_L1C1(_L8("CIPv6ProtocolIf::ReadCommDbGprsSettings")); |
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314 |
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315 // Read he DNS addresses.. |
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316 ReadIPv6SettingL(TPtrC(GPRS_IP6_NAME_SERVER1), iSettings.iPrimaryDns); |
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317 ReadIPv6SettingL(TPtrC(GPRS_IP6_NAME_SERVER2), iSettings.iSecondaryDns); |
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318 // Read whether to get the DNS addresses from the server. |
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319 _BTT_LEAVEIFERROR(GetNifMain().GetAgent()->ReadBool( |
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320 TPtrC(GPRS_IP6_DNS_ADDR_FROM_SERVER), |
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321 iSettings.iGetDnsFromServer)); |
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322 |
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323 // Read whether to get IPv4 address from the server |
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324 // This is only needed for the integration tests. If it's true then |
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325 // the IPv4 address will be used to build up the IPv6 address. |
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326 _BTT_LEAVEIFERROR(GetNifMain().GetAgent()->ReadBool( |
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327 TPtrC(GPRS_IP_ADDR_FROM_SERVER), |
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328 iSettings.iGetIpFromServer)); |
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329 |
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330 |
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331 if (iSettings.iGetIpFromServer == EFalse) |
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332 { |
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333 // Sets the IPv6 Link-local address from IpAddr. |
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334 // LocalId is derived from IpAddr and it's further used to set the Link-local |
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335 // address elsewhere by adding a prefix (FE80::) in front. |
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336 // For IpAddr: 192.168.1.1, link-local address will be FE80::C0A8:101. |
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337 TUint32 ipAddr; |
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338 ReadIPv4SettingL(TPtrC(GPRS_IP_ADDR), ipAddr); |
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339 const TUint8 constantId[8] = { 0, 0, 0, 0, |
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340 ipAddr >> 24, (ipAddr >> 16) & 0xFF, |
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341 (ipAddr >> 8) & 0xFF, ipAddr & 0xFF }; |
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342 iSettings.iLocalIfId.SetAddr(constantId, sizeof (constantId)); |
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343 } |
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344 else |
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345 { |
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346 |
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347 // |
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348 // Use the 64 bit id of MARM machines as our interface id |
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349 // |
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350 TMachineInfoV1Buf machineInfo; |
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351 UserHal::MachineInfo(machineInfo); |
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352 iSettings.iLocalIfId.SetAddr(machineInfo().iMachineUniqueId); |
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353 iSettings.iLocalIfId.SetUniversalBit(0); |
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354 // |
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355 // In WINS environment the id is zero which is no-no |
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356 // |
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357 if (iSettings.iLocalIfId.IsZero()) |
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358 { |
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359 iSettings.iLocalIfId.SetAddrRandomNZ(); |
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360 } |
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361 |
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362 } |
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363 } |
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364 |
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365 void CIPv6ProtocolIf::UpdateContextConfigL(const |
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366 RPacketContext::TContextConfigGPRS& |
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367 aConfig) |
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368 /** |
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369 * Called when the context has been activated to set our IP address and get |
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370 * any other required settings from CommDB. |
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371 * |
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372 * @param aConfig The new context config |
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373 */ |
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374 { |
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375 _LOG_L1C1(_L8("CIPv6ProtocolIf::UpdateContextConfig")); |
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376 |
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377 // Get the settings which are stored in CommDB. |
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378 ReadCommDbGprsSettingsL(); |
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379 |
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380 // Get our IP address from the GPRS context config. |
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381 TInetAddr address; |
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382 |
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383 TBuf<RPacketContext::KMaxPDPAddressLength> tempAddr; |
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384 tempAddr.Copy(aConfig.iPdpAddress); |
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385 TInt ret = address.Input(tempAddr); |
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386 |
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387 // We've got our IP address! Let's save it. |
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388 if (ret == KErrNone) |
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389 { |
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390 iSettings.iLocalAddr = address.Ip6Address(); |
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391 LOG_IP_ADDRESS("Got local IP address", iSettings.iLocalAddr); |
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392 } |
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393 else |
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394 { |
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395 _LOG_L2C2(_L8("Couldn't get IP address from GPRS config (err: %d)"), |
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396 ret); |
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397 |
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398 // Don't leave on this error: we may still be OK if we read some |
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399 // settings from CommDB. |
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400 } |
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401 |
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402 // @todo - is this correct. We can only get the DNS addresses |
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403 // from the TSY using the iProtocolConfigOption data. Yet a client could |
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404 // access those DNS config details without knowing about the state of the |
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405 // iSettings.iGetDnsFromServer flag. |
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406 |
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407 if ((iSettings.iGetDnsFromServer) || |
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408 ((iSettings.iPrimaryDns.IsUnspecified()) && |
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409 (iSettings.iSecondaryDns.IsUnspecified())) ) |
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410 { |
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411 TBuf<RPacketContext::KMaxPDPAddressLength> tempAddr; |
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412 tempAddr.Copy(aConfig.iProtocolConfigOption.iDnsAddresses.iPrimaryDns); |
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413 ret = address.Input(tempAddr); |
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414 |
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415 if (ret == KErrNone) |
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416 { |
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417 iSettings.iPrimaryDns = address.Ip6Address(); |
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418 LOG_IP_ADDRESS("Got primary DNS", iSettings.iPrimaryDns); |
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419 } |
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420 else |
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421 { |
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422 _LOG_L2C2(_L8("Couldn't get primary DNS address from GPRS config (err: %d)"), |
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423 ret); |
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424 |
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425 // Don't leave on this error: we may still be OK if we read some |
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426 // settings from CommDB. |
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427 } |
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428 |
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429 tempAddr.Copy(aConfig.iProtocolConfigOption.iDnsAddresses.iSecondaryDns); |
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430 ret = address.Input(tempAddr); |
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431 |
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432 if (ret == KErrNone) |
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433 { |
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434 iSettings.iSecondaryDns = address.Ip6Address(); |
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435 LOG_IP_ADDRESS("Got secondary DNS", iSettings.iPrimaryDns); |
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436 } |
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437 else |
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438 { |
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439 _LOG_L2C2(_L8("Couldn't get secondary DNS address from GPRS config (err: %d)"), |
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440 ret); |
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441 |
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442 // Don't leave on this error: we may still be OK if we read some |
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443 // settings from CommDB. |
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444 } |
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445 } |
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446 else |
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447 { |
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448 LOG_IP_ADDRESS("Using CommDB DNS address - Primary ", iSettings.iPrimaryDns); |
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449 LOG_IP_ADDRESS(" - Secondary ", iSettings.iSecondaryDns); |
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450 } |
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451 } |
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452 |
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453 void CIPv6ProtocolIf::UpdateConnectionSpeed(TUint aConnectionSpeed) |
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454 /** |
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455 * Sets the speed metric to return to TCP/IP, based on what the TSY tells us. |
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456 * |
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457 * @param aConnectionSpeed Our connection speed |
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458 */ |
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459 { |
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460 _LOG_L1C1(_L8("CIPv6ProtocolIf::UpdateConnectionSpeed")); |
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461 |
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462 iSpeedMetric = aConnectionSpeed; |
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463 } |
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464 |
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465 void CIPv6ProtocolIf::ReadIPv4SettingL(const TDesC& aFieldName, |
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466 TUint32& aIpAddr) |
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467 /** |
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468 * Reads an IPv4 address from CommDB, via the TRP agent. It leaves if an error |
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469 * other than KErrNotFound occurs. |
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470 * |
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471 * @param aFieldName The name of the field to read |
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472 * @param aIpAddr Will contain the IP address |
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473 */ |
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474 { |
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475 #ifdef __BTT_LOGGING__ |
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476 TBuf8<256> debugBuffer; |
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477 debugBuffer.Copy(aFieldName); |
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478 _LOG_L1C2(_L8("CIPv6ProtocolIf::ReadIp4Setting [aFieldName=%S]"), |
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479 &debugBuffer); |
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480 #endif |
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481 |
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482 TBuf<KCommsDbSvrMaxFieldLength> name; |
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483 TInetAddr ip4Addr; |
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484 |
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485 TInt ret = GetNifMain().GetAgent()->ReadDes(aFieldName, name); |
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486 |
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487 if (ret == KErrNone) |
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488 { |
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489 // We've successfully read an IP address, so convert it into a number. |
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490 ip4Addr.Input(name); |
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491 aIpAddr = ip4Addr.Address(); |
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492 } |
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493 else |
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494 { |
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495 // We couldn't get the IP address, so set it to 0.0.0.0. Note that we |
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496 // only leave here if we got a more serious error than "not found". |
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497 aIpAddr = 0; |
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498 if (ret != KErrNotFound) |
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499 { |
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500 _BTT_LEAVEIFERROR(ret); |
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501 } |
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502 } |
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503 } |
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504 |
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505 void CIPv6ProtocolIf::ReadIPv6SettingL(const TDesC& aFieldName, |
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506 TIp6Addr& aIpAddr) |
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507 /** |
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508 * Reads an IPv6 address from CommDB, via the TRP agent. It leaves if an error |
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509 * other than KErrNotFound occurs. |
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510 * |
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511 * @param aFieldName The name of the field to read |
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512 * @param aIpAddr Will contain the IP address |
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513 */ |
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514 { |
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515 #ifdef __BTT_LOGGING__ |
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516 TBuf8<256> debugBuffer; |
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517 debugBuffer.Copy(aFieldName); |
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518 _LOG_L1C2(_L8("CIPv6ProtocolIf::ReadIp6Setting [aFieldName=%S]"), |
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519 &debugBuffer); |
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520 #endif |
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521 |
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522 TBuf<KCommsDbSvrMaxFieldLength> name; |
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523 TInetAddr ip6Addr; |
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524 |
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525 TInt ret = GetNifMain().GetAgent()->ReadDes(aFieldName, name); |
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526 |
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527 if (ret == KErrNone) |
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528 { |
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529 // We've successfully read an IP address, so convert it into a number. |
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530 ip6Addr.Input(name); |
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531 aIpAddr = ip6Addr.Ip6Address(); |
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532 } |
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533 else |
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534 { |
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535 // We couldn't get the IP address, so set it to 0.0.0.0. Note that we |
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536 // only leave here if we got a more serious error than "not found". |
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537 aIpAddr = KInet6AddrNone; |
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538 if (ret != KErrNotFound) |
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539 { |
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540 _BTT_LEAVEIFERROR(ret); |
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541 } |
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542 } |
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543 } |
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544 |
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545 TInt CIPv6ProtocolIf::Send(RMBufChain& aPdu, TAny* aSource) |
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546 /** |
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547 * Called by the protocol to send an outgoing IP packet to the network. |
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548 * |
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549 * @param aPdu The outgoing packet |
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550 * @param aSource The source of the packet |
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551 * @return Standard error codes |
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552 */ |
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553 { |
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554 _LOG_L1C1(_L8("CIPv6ProtocolIf::Send")); |
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555 |
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556 #ifdef __BTT_LOGGING__ |
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557 LogPacket(aPdu); |
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558 #endif |
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559 |
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560 // Return <0: an error occurred |
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561 // Return 0: no error, but don't send any more packets |
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562 |
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563 return GetNifMain().SendPacket(aPdu, aSource, KIp6FrameType); |
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564 } |
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565 |
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566 void CIPv6ProtocolIf::Info(TNifIfInfo& aInfo) const |
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567 /** |
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568 * Called by the protocol to get information about the NIF. |
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569 * |
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570 * @param aInfo Will contain NIF information |
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571 */ |
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572 { |
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573 _LOG_L1C1(_L8("CIPv6ProtocolIf::Info")); |
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574 |
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575 // The parent class sets everything except the name... |
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576 CProtocolIfBase::Info(aInfo); |
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577 // ...which we set here. |
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578 WriteIfName(aInfo.iName); |
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579 } |
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580 |
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581 TInt CIPv6ProtocolIf::Notification(TAgentToNifEventType /*aEvent*/, |
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582 void* /*aInfo*/) |
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583 /** |
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584 * The Nif will ignore any notification sent |
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585 * |
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586 * @param aEvent Not used |
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587 * @param aInfo Not used |
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588 */ |
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589 { |
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590 _LOG_L1C1(_L8("CIPv6ProtocolIf::Notification")); |
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591 |
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592 return KErrNone; |
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593 } |
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594 |
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595 void CIPv6ProtocolIf::StartSending(CProtocolBase* aProtocol) |
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596 /** |
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597 * Indicates to the protocol layer that the NIF is ready to send packets. |
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598 * |
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599 * @param aProtocol A pointer to a protocol |
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600 */ |
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601 { |
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602 _LOG_L1C2(_L8("CIPv6ProtocolIf::StartSending [aProtocol=%X]"), aProtocol); |
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603 |
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604 CProtocolIfBase::StartSending(aProtocol); |
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605 } |
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606 |
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607 TBool CIPv6ProtocolIf::WantsProtocol(TUint16 aProtocolCode) |
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608 /** |
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609 * Indicates the type of protocol implemented by this class. |
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610 * |
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611 * @param aProtocolCode The protocol type |
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612 */ |
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613 { |
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614 _LOG_L1C2(_L8("CIPv6ProtocolIf::WantsProtocol [aProtocolCode=%X]"), |
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615 aProtocolCode); |
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616 |
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617 #ifdef RAWIP_HEADER_APPENDED_TO_PACKETS |
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618 return ((aProtocolCode & 0x00FF) == KIp6FrameType); |
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619 #else |
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620 (void) aProtocolCode; // disable compiler warning |
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621 return ETrue; |
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622 #endif // RAWIP_HEADER_APPENDED_TO_PACKETS |
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623 } |
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624 |
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625 void CIPv6ProtocolIf::Process(RMBufChain& aPdu) |
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626 /** |
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627 * Called when an incoming IP packet has arrived. Send packets up to the |
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628 * TCP/IP stack. |
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629 * |
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630 * @param aPdu The incoming packet |
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631 */ |
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632 { |
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633 _LOG_L1C1(_L8("CIPv6ProtocolIf::Process")); |
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634 |
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635 #ifdef __BTT_LOGGING__ |
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636 LogPacket(aPdu); |
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637 #endif |
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638 |
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639 // Pass incoming packets up to the protocol, unless it hasn't |
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640 // been bound yet. |
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641 if (iProtocol) |
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642 { |
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643 _LOG_L1C1(_L8("CIPv6ProtocolIf: Packet Sent to TCP/IP Protocol!!!")); |
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644 iProtocol->Process(aPdu, reinterpret_cast<CProtocolBase*>(this)); |
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645 } |
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646 else |
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647 { |
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648 _LOG_L2C1(_L8("WARNING: dumping incoming packet, no protocol bound")); |
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649 aPdu.Free(); |
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650 } |
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651 } |
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652 |
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653 #ifdef __BTT_LOGGING__ |
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654 void CIPv6ProtocolIf::LogPacket(const RMBufChain& aPacket) |
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655 /** |
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656 * Logs packet information into log file. |
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657 * |
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658 * @param aPacket The packet |
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659 */ |
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660 { |
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661 _LOG_L1C1(_L8("CIPv6ProtocolIf::LogPacket")); |
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662 |
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663 TInt mBufLength = aPacket.Length() - aPacket.First()->Length(); |
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664 |
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665 _LOG_L3C2(_L8("Analysis of %d byte packet:"), mBufLength); |
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666 |
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667 //Note: All the constants used on this method are a pragmatic guess of the |
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668 //IP header fields. The only porpose of this method is logging. |
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669 |
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670 if (mBufLength < 40) |
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671 { |
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672 _LOG_L3C2(_L8(" -doesn't appear to be a valid IPv6 packet (length=%d)") |
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673 , mBufLength); |
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674 return; |
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675 } |
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676 |
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677 // Get a pointer to the packet's payload. |
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678 const TUint8* payloadPtr = aPacket.First()->Next()->Ptr(); |
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679 |
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680 if ((payloadPtr[0] & 0xF0) != 0x60) |
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681 { |
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682 _LOG_L3C2(_L8(" - doesn't appear to be an IPv6 packet (version=0x%X)"), |
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683 (payloadPtr[0] & 0xF0) >> 4); |
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684 return; |
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685 } |
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686 |
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687 _LOG_L3C2(_L8(" - traffic class: 0x%X"), |
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688 ((payloadPtr[0] & 0xF) << 4) | ((payloadPtr[1] & 0xF0) >> 4)); |
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689 _LOG_L3C2(_L8(" - flow label: 0x%X"), |
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690 ((payloadPtr[1] & 0x0F) << 16) | (payloadPtr[2] << 8) | payloadPtr[3]); |
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691 _LOG_L3C2(_L8(" - payload length: 0x%X"), |
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692 (payloadPtr[4] << 16) | payloadPtr[5]); |
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693 _LOG_L3C2(_L8(" - next header: 0x%08X"), payloadPtr[6]); |
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694 _LOG_L3C2(_L8(" - hop limit: 0x%08X"), payloadPtr[7]); |
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695 } |
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696 #endif // __BTT_LOGGING__ |