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1 // Copyright (c) 2006-2009 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 CIPv6Binder 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 <etelpckt.h> |
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24 #include <in_iface.h> |
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25 #include "RawIPFlow.h" |
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26 #include "IPv6Binder.h" |
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27 #include <comms-infras/linkprovision.h> |
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28 |
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29 using namespace ESock; |
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30 #ifdef WCDMA_STUB |
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31 #include <networking/umtsnifcontrolif.h> |
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32 #endif |
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33 |
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34 #define LOG_IP_ADDRESS(desc,addr) _LOG_L2C5(_L8(" " desc " = %d:%d:%d:%d from context"), \ |
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35 addr.u.iAddr32[3], addr.u.iAddr32[2], addr.u.iAddr32[1], addr.u.iAddr32[0]); |
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36 |
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37 CIPv6Binder::CIPv6Binder(CRawIPFlow& aFlow, CBttLogger* aTheLogger) |
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38 /** |
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39 * Constructor |
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40 */ |
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41 : CBinderBase(aFlow,aTheLogger), |
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42 iTheLogger(aTheLogger), |
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43 iSpeedMetric(KDefaultSpeedMetric) |
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44 { |
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45 } |
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46 |
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47 CIPv6Binder::~CIPv6Binder() |
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48 /** |
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49 * Destructor |
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50 */ |
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51 { |
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52 } |
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53 |
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54 MLowerDataSender* CIPv6Binder::Bind(MUpperDataReceiver* aUpperReceiver, MUpperControl* aUpperControl) |
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55 /** |
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56 * Binds TCP/IP protocol to Flow |
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57 * |
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58 * @param aUpperReceiver A pointer to Upper layer Receive class |
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59 * @param aUpperControl A pointer to Upper layer control class |
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60 */ |
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61 { |
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62 CBinderBase::Bind(aUpperReceiver, aUpperControl); // Call the superclass's method. |
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63 return this; |
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64 } |
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65 |
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66 TInt CIPv6Binder::Control(TUint aLevel, TUint aName, TDes8& /*aOption*/) |
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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 * @return Standard error codes |
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76 */ |
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77 { |
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78 _LOG_L1C3(_L8("CIPv6Binder::Control [aLevel=%d, aName=%d]"), |
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79 aLevel, aName); |
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80 |
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81 if (aLevel == KSOLInterface) |
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82 { |
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83 switch (aName) |
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84 { |
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85 case KSoIfHardwareAddr: |
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86 // unsupported because we don't have a h/w address |
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87 break; |
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88 |
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89 // 3G-specific configuration commands are below this point. |
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90 #ifdef WCDMA_STUB |
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91 case KRegisterEventHandler: |
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92 // Raw IP NIF Events are not supported |
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93 case KContextSetEvents: |
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94 // Raw IP NIF Events are not supported |
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95 break; |
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96 |
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97 case KContextCreate: |
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98 // We don't support creating new secondary contexts. |
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99 break; |
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100 |
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101 case KContextDelete: |
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102 // Deletes the primary PDP context. This will shut down the Nif. |
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103 return DeleteContext(aOption); |
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104 |
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105 case KContextActivate: |
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106 // If the IPv6 interface is up, then the context will already have |
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107 // been activated. So this command should fail with |
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108 // KErrAlreadyExists |
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109 { |
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110 TUint8* ptr = CONST_CAST(TUint8*, aOption.Ptr()); |
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111 TContextParameters* contextParams = |
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112 REINTERPRET_CAST(TContextParameters*, ptr); |
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113 |
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114 if (contextParams->iContextInfo.iContextId != |
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115 STATIC_CAST(TInt8, GetFlow().GetBcaController()->Nsapi())) |
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116 { |
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117 contextParams->iReasonCode = KErrNotFound; |
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118 } |
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119 else |
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120 { |
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121 contextParams->iContextInfo.iStatus = |
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122 GetFlow().GetContextStatus(); |
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123 contextParams->iReasonCode = KErrAlreadyExists; |
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124 } |
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125 return KErrNone; |
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126 } |
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127 |
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128 case KNifSetDefaultQoS: |
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129 case KContextQoSSet: |
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130 // Setting the QoS is meaningless over GPRS, so we just return that |
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131 // we don't support these operations. |
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132 break; |
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133 |
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134 case KContextTFTModify: |
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135 // As we only have one primary context, we don't support anything |
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136 // to do with traffic flow templates, which are used by secondary |
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137 // contexts. |
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138 break; |
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139 |
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140 case KContextModifyActive: |
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141 // This command is only valid aftermodifying TFT/QoS parameters. |
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142 // As we don't support any of these operations, |
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143 // this command is never valid. |
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144 break; |
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145 #endif |
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146 default: |
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147 break; |
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148 } |
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149 } |
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150 return KErrNotSupported; |
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151 } |
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152 |
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153 TInt CIPv6Binder::GetConfig(TBinderConfig& aConfig) |
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154 { |
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155 TBinderConfig6* config = TBinderConfig::Cast<TBinderConfig6>(aConfig); |
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156 |
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157 if(config == NULL) |
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158 { |
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159 return KErrNotSupported; |
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160 } |
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161 |
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162 config->iFamily = KAfInet6; /* KAfInet6 - selects TBinderConfig6 */ |
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163 |
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164 config->iInfo.iFeatures = KIfCanBroadcast | KIfCanMulticast; /* Feature flags */ |
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165 config->iInfo.iMtu = KDefaultMtu; /* Maximum transmission unit. */ |
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166 config->iInfo.iRMtu = KDefaultMtu; /* Maximum transmission unit for receiving. */ |
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167 config->iInfo.iSpeedMetric = iSpeedMetric; /* approximation of the interface speed in Kbps. */ |
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168 |
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169 TEui64Addr& localId = TEui64Addr::Cast(config->iLocalId); |
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170 localId = iSettings.iLocalIfId; |
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171 config->iNameSer1.SetAddress(iSettings.iPrimaryDns); /* IP primary name server (if any). */ |
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172 config->iNameSer2.SetAddress(iSettings.iSecondaryDns); /* IP secondary name server (if any). */ |
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173 |
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174 return KErrNone; |
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175 } |
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176 #ifdef WCDMA_STUB |
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177 |
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178 TInt CIPv6Binder::DeleteContext(TDes8& aContextParameters) |
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179 /** |
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180 * Deletes a context. As the NIF is responsible for one primary context, |
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181 * this is equivalent to closing down the NIF. |
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182 * |
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183 * @param aContextParameters Parameters of the context to delete |
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184 * @return KErrArgument if an incorrect structure is passed, otherwise KErrNone |
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185 */ |
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186 { |
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187 _LOG_L1C1(_L8("CIPv6Binder::DeleteContext")); |
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188 |
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189 if (aContextParameters.Length() != sizeof(TContextParameters)) |
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190 { |
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191 return KErrArgument; |
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192 } |
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193 |
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194 TUint8* ptr = CONST_CAST(TUint8*, aContextParameters.Ptr()); |
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195 TContextParameters* params = REINTERPRET_CAST(TContextParameters*, ptr); |
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196 |
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197 if (params->iContextInfo.iContextId != |
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198 STATIC_CAST(TInt8, GetFlow().GetBcaController()->Nsapi())) |
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199 { |
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200 params->iReasonCode = KErrBadName; |
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201 } |
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202 else |
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203 { |
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204 params->iReasonCode = KErrNone; |
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205 GetFlow().Stop(KErrNone, MNifIfNotify::EDisconnect); |
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206 } |
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207 |
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208 return KErrNone; |
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209 } |
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210 |
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211 #endif |
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212 |
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213 /** |
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214 * Called when the context has been activated to set our IP address and get |
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215 * any other required settings from CommDB. |
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216 * |
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217 * @param aConfig The new context config |
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218 */ |
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219 void CIPv6Binder::UpdateContextConfigL(const TPacketDataConfigBase& aConfig) |
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220 { |
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221 _LOG_L1C1(_L8("CIPv6Binder::UpdateContextConfig")); |
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222 |
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223 // Get our IP address from the GPRS context config. |
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224 TInetAddr address; |
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225 |
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226 TBuf<RPacketContext::KMaxPDPAddressLength> tempAddr; |
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227 |
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228 const RPacketContext::TProtocolConfigOptionV2* pco; |
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229 TInt rel = const_cast<TPacketDataConfigBase&>(aConfig).ExtensionId(); |
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230 if (rel == TPacketDataConfigBase::KConfigGPRS) |
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231 { |
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232 tempAddr.Copy(static_cast<const RPacketContext::TContextConfigGPRS&>(aConfig).iPdpAddress); |
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233 pco = &static_cast<const RPacketContext::TContextConfigGPRS&>(aConfig).iProtocolConfigOption; |
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234 } |
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235 else |
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236 { |
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237 ASSERT(rel == TPacketDataConfigBase::KConfigRel99Rel4 || rel == TPacketDataConfigBase::KConfigRel5); |
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238 tempAddr.Copy(static_cast<const RPacketContext::TContextConfigR99_R4&>(aConfig).iPdpAddress); |
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239 pco = &static_cast<const RPacketContext::TContextConfigR99_R4&>(aConfig).iProtocolConfigOption; |
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240 } |
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241 TInt ret = address.Input(tempAddr); |
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242 |
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243 // We've got our IP address! Let's save it. |
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244 if (ret == KErrNone) |
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245 { |
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246 const TUint8* addrTable = &address.Ip6Address().u.iAddr8[8]; |
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247 |
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248 iSettings.iLocalIfId.SetAddr(addrTable, 8); |
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249 |
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250 LOG_IP_ADDRESS("Got local IP address", address.Ip6Address()); |
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251 } |
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252 else |
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253 { |
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254 _LOG_L2C2(_L8("Couldn't get IP address from GPRS config (err: %d)"), |
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255 ret); |
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256 |
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257 // Don't leave on this error: we may still be OK if we read some |
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258 // settings from CommDB. |
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259 } |
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260 |
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261 // @todo - is this correct. We can only get the DNS addresses |
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262 // from the TSY using the iProtocolConfigOption data. Yet a client could |
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263 // access those DNS config details without knowing about the state of the |
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264 // iSettings.iGetDnsFromServer flag. |
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265 |
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266 if ((iSettings.iGetDnsFromServer) || |
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267 ((iSettings.iPrimaryDns.IsUnspecified()) && |
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268 (iSettings.iSecondaryDns.IsUnspecified())) ) |
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269 { |
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270 TBuf<RPacketContext::KMaxPDPAddressLength> tempAddr; |
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271 tempAddr.Copy(pco->iDnsAddresses.iPrimaryDns); |
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272 ret = address.Input(tempAddr); |
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273 |
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274 if (ret == KErrNone) |
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275 { |
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276 iSettings.iPrimaryDns = address.Ip6Address(); |
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277 LOG_IP_ADDRESS("Got primary DNS", iSettings.iPrimaryDns); |
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278 } |
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279 else |
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280 { |
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281 _LOG_L2C2(_L8("Couldn't get primary DNS address from GPRS config (err: %d)"), |
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282 ret); |
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283 |
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284 // Don't leave on this error: we may still be OK if we read some |
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285 // settings from CommDB. |
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286 } |
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287 |
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288 tempAddr.Copy(pco->iDnsAddresses.iSecondaryDns); |
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289 ret = address.Input(tempAddr); |
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290 |
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291 if (ret == KErrNone) |
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292 { |
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293 iSettings.iSecondaryDns = address.Ip6Address(); |
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294 LOG_IP_ADDRESS("Got secondary DNS", iSettings.iPrimaryDns); |
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295 } |
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296 else |
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297 { |
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298 _LOG_L2C2(_L8("Couldn't get secondary DNS address from GPRS config (err: %d)"), |
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299 ret); |
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300 |
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301 // Don't leave on this error: we may still be OK if we read some |
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302 // settings from CommDB. |
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303 } |
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304 } |
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305 else |
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306 { |
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307 LOG_IP_ADDRESS("Using CommDB DNS address - Primary ", iSettings.iPrimaryDns); |
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308 LOG_IP_ADDRESS(" - Secondary ", iSettings.iSecondaryDns); |
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309 } |
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310 } |
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311 |
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312 void CIPv6Binder::UpdateConnectionSpeed(TUint aConnectionSpeed) |
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313 /** |
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314 * Sets the speed metric to return to TCP/IP, based on what the TSY tells us. |
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315 * |
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316 * @param aConnectionSpeed Our connection speed |
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317 */ |
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318 { |
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319 _LOG_L1C1(_L8("CIPv6Binder::UpdateConnectionSpeed")); |
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320 |
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321 iSpeedMetric = aConnectionSpeed; |
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322 } |
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323 |
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324 |
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325 MLowerDataSender::TSendResult CIPv6Binder::Send(RMBufChain& aPdu) |
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326 /** |
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327 * Called by the protocol to send an outgoing IP packet to the network. |
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328 * |
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329 * @param aPdu The outgoing packet |
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330 * @return Standard error codes |
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331 */ |
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332 { |
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333 _LOG_L1C1(_L8("CIPv6Binder::Send")); |
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334 |
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335 #ifdef __BTT_LOGGING__ |
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336 LogPacket(aPdu); |
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337 #endif |
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338 |
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339 // Return <0: an error occurred |
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340 // Return 0: no error, but don't send any more packets |
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341 |
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342 return static_cast<MLowerDataSender::TSendResult>(GetFlow().SendPacket(aPdu, NULL, KIp4FrameType)); |
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343 } |
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344 |
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345 TInt CIPv6Binder::Notification(TAgentToNifEventType /*aEvent*/, |
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346 void* /*aInfo*/) |
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347 /** |
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348 * The Nif will ignore any notification sent |
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349 * |
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350 * @param aEvent Not used |
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351 * @param aInfo Not used |
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352 */ |
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353 { |
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354 _LOG_L1C1(_L8("CIPv6Binder::Notification")); |
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355 |
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356 return KErrNone; |
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357 } |
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358 |
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359 void CIPv6Binder::StartSending() |
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360 /** |
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361 * Indicates to the protocol layer that the NIF is ready to send packets. |
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362 * |
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363 * @param aProtocol A pointer to a protocol |
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364 */ |
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365 { |
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366 _LOG_L1C1(_L8("CIPv6Binder::StartSending()")); |
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367 |
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368 CBinderBase::StartSending(); |
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369 } |
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370 |
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371 TBool CIPv6Binder::WantsProtocol(TUint16 aProtocolCode) |
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372 /** |
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373 * Indicates the type of protocol implemented by this class. |
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374 * |
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375 * @param aProtocolCode The protocol type |
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376 */ |
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377 { |
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378 _LOG_L1C2(_L8("CIPv6Binder::WantsProtocol [aProtocolCode=%X]"), |
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379 aProtocolCode); |
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380 |
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381 #ifdef RAWIP_HEADER_APPENDED_TO_PACKETS |
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382 return ((aProtocolCode & 0x00FF) == KIp6FrameType); |
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383 #else |
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384 (void) aProtocolCode; |
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385 return ETrue; |
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386 #endif // RAWIP_HEADER_APPENDED_TO_PACKETS |
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387 } |
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388 |
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389 void CIPv6Binder::Process(RMBufChain& aPdu) |
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390 /** |
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391 * Called when an incoming IP packet has arrived. Send packets up to the |
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392 * TCP/IP stack. |
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393 * |
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394 * @param aPdu The incoming packet |
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395 */ |
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396 { |
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397 _LOG_L1C1(_L8("CIPv6Binder::Process")); |
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398 |
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399 #ifdef __BTT_LOGGING__ |
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400 LogPacket(aPdu); |
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401 #endif |
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402 |
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403 // Pass incoming packets up to the protocol, unless it hasn't |
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404 // been bound yet. |
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405 if (iUpperReceiver) // ASSERT(iUpperReceiver) ? |
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406 { |
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407 _LOG_L1C1(_L8("CIPv6Binder: Packet Sent to TCP/IP Protocol!!!")); |
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408 iUpperReceiver->Process(aPdu); |
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409 } |
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410 else |
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411 { |
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412 _LOG_L2C1(_L8("WARNING: dumping incoming packet, no protocol bound")); |
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413 aPdu.Free(); |
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414 } |
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415 } |
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416 |
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417 // |
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418 // MLowerControl methods |
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419 // |
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420 |
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421 TInt CIPv6Binder::GetName(TDes& aName) |
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422 /** |
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423 */ |
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424 { |
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425 WriteIfName(aName); |
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426 return KErrNone; |
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427 } |
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428 |
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429 // |
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430 // CBinderBase methods |
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431 // |
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432 |
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433 void CIPv6Binder::SetProvision(const CIPConfig& aProvision) |
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434 /** |
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435 Set provisioning information for IPv6 binder. |
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436 |
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437 Called from RawIP Flow. |
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438 |
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439 @param aProvision Provisioning structure from Control side. |
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440 */ |
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441 { |
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442 iSettings.iPrimaryDns = aProvision.GetIp6NameServer1(); |
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443 iSettings.iSecondaryDns = aProvision.GetIp6NameServer2(); |
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444 iSettings.iGetDnsFromServer = aProvision.GetIp6DNSAddrFromServer(); |
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445 |
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446 // Read whether to get IPv4 address from the server |
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447 // This is only needed for the integration tests. If it's true then |
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448 // the IPv4 address will be used to build up the IPv6 address. |
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449 iSettings.iGetIpFromServer = aProvision.GetIpAddrFromServer(); |
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450 |
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451 if (iSettings.iGetIpFromServer == EFalse) |
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452 { |
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453 // Sets the IPv6 Link-local address from IpAddr. |
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454 // LocalId is derived from IpAddr and it's further used to set the Link-local |
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455 // address elsewhere by adding a prefix (FE80::) in front. |
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456 // For IpAddr: 192.168.1.1, link-local address will be FE80::C0A8:101. |
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457 TUint32 ipAddr = aProvision.GetIpAddress(); |
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458 const TUint8 constantId[8] = { 0, 0, 0, 0, |
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459 ipAddr >> 24, (ipAddr >> 16) & 0xFF, |
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460 (ipAddr >> 8) & 0xFF, ipAddr & 0xFF }; |
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461 iSettings.iLocalIfId.SetAddr(constantId, sizeof (constantId)); |
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462 } |
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463 else |
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464 { |
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465 // |
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466 // Use the 64 bit id of MARM machines as our interface id |
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467 // |
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468 TMachineInfoV1Buf machineInfo; |
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469 UserHal::MachineInfo(machineInfo); |
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470 iSettings.iLocalIfId.SetAddr(machineInfo().iMachineUniqueId); |
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471 iSettings.iLocalIfId.SetUniversalBit(0); |
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472 // |
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473 // In WINS environment the id is zero which is no-no |
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474 // |
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475 if (iSettings.iLocalIfId.IsZero()) |
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476 { |
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477 iSettings.iLocalIfId.SetAddrRandomNZ(); |
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478 } |
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479 } |
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480 } |
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481 |
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482 #ifdef __BTT_LOGGING__ |
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483 void CIPv6Binder::LogPacket(const RMBufChain& aPacket) |
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484 /** |
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485 * Logs packet information into log file. |
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486 * |
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487 * @param aPacket The packet |
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488 */ |
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489 { |
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490 _LOG_L1C1(_L8("CIPv6Binder::LogPacket")); |
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491 |
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492 TInt mBufLength = aPacket.Length() - aPacket.First()->Length(); |
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493 |
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494 _LOG_L3C2(_L8("Analysis of %d byte packet:"), mBufLength); |
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495 |
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496 //Note: All the constants used on this method are a pragmatic guess of the |
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497 //IP header fields. The only porpose of this method is logging. |
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498 |
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499 if (mBufLength < 40) |
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500 { |
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501 _LOG_L3C2(_L8(" -doesn't appear to be a valid IPv6 packet (length=%d)") |
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502 , mBufLength); |
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503 return; |
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504 } |
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505 |
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506 // Get a pointer to the packet's payload. |
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507 const TUint8* payloadPtr = aPacket.First()->Next()->Ptr(); |
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508 |
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509 if ((payloadPtr[0] & 0xF0) != 0x60) |
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510 { |
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511 _LOG_L3C2(_L8(" - doesn't appear to be an IPv6 packet (version=0x%X)"), |
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512 (payloadPtr[0] & 0xF0) >> 4); |
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513 return; |
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514 } |
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515 |
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516 _LOG_L3C2(_L8(" - traffic class: 0x%X"), |
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517 ((payloadPtr[0] & 0xF) << 4) | ((payloadPtr[1] & 0xF0) >> 4)); |
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518 _LOG_L3C2(_L8(" - flow label: 0x%X"), |
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519 ((payloadPtr[1] & 0x0F) << 16) | (payloadPtr[2] << 8) | payloadPtr[3]); |
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520 _LOG_L3C2(_L8(" - payload length: 0x%X"), |
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521 (payloadPtr[4] << 16) | payloadPtr[5]); |
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522 _LOG_L3C2(_L8(" - next header: 0x%08X"), payloadPtr[6]); |
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523 _LOG_L3C2(_L8(" - hop limit: 0x%08X"), payloadPtr[7]); |
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524 } |
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525 #endif // __BTT_LOGGING__ |