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1 // Copyright (c) 2007-2009 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 // |
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15 |
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16 #include <es_ini.h> |
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17 #include <timeout.h> |
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18 #include <es_prot_internal.h> |
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19 |
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20 #include "guqos.h" |
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21 #include "iface.h" |
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22 #include "tc.h" |
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23 #include "guqos_ini.h" |
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24 #include "context.h" |
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25 #include "async_request.h" |
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26 #include "guqos_log.h" |
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27 |
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28 CModuleGuqos* CModuleGuqos::NewL() |
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29 { |
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30 CModuleGuqos* module = new (ELeave) CModuleGuqos(); |
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31 CleanupStack::PushL(module); |
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32 module->ConstructL(); |
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33 CleanupStack::Pop(); |
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34 return module; |
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35 } |
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36 |
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37 CModuleGuqos::CModuleGuqos() |
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38 { |
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39 LOG(Log::Printf(_L(""))); |
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40 LOG(Log::Printf(_L("**** CREATING MODULE GUQOS (size=%u) ****"), sizeof(*this))); |
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41 iFlowCount = 0; |
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42 } |
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43 |
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44 void CModuleGuqos::ConstructL() |
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45 { |
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46 iIfManager = CNifManager::NewL(); |
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47 iTimeoutManager = TimeoutFactory::NewL(100); // Time Unit is [1/100 seconds] |
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48 ReadConfigOptions(); |
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49 } |
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50 |
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51 void CModuleGuqos::ReadConfigOptions() |
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52 { |
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53 CESockIniData* config = NULL; |
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54 TRAP_IGNORE(config = CESockIniData::NewL(GUQOS_INI_DATA)); |
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55 TInt value; |
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56 if (config == NULL || !config->FindVar(GUQOS_INI_VARIABLES, GUQOS_INI_TIMEOUT, value)) |
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57 value = KPdpContextDeleteTimeout; |
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58 delete config; |
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59 iOptions.iTimeout = (value + 9999) / 10000; |
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60 LOG(Log::Printf(_L("%S = %d [microseconds] converted to %d [1/100 seconds]"), &GUQOS_INI_TIMEOUT, value, iOptions.iTimeout)); |
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61 } |
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62 |
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63 CModuleGuqos::~CModuleGuqos() |
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64 { |
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65 LOG(Log::Printf(_L("~\tGUGOS DESTRUCTOR"))); |
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66 ASSERT(iFlowCount == 0); |
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67 delete iIfManager; |
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68 delete iTimeoutManager; |
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69 } |
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70 |
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71 void CModuleGuqos::InterfaceAttached(const TDesC& /*aName*/, CNifIfBase* aIf) |
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72 { |
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73 LOG(Log::Printf(_L(""))); |
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74 LOG(Log::Printf(_L("Guqos::InterfaceAttached -- start CNifIfBase[%u]"), (TInt)aIf)); |
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75 if (!aIf) |
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76 return; // Nothing to attach! (someone is making invalid calls!). |
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77 |
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78 if (!iIfManager->FindInterface(aIf)) |
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79 { |
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80 TRAPD(err, iIfManager->CreateNifL(*aIf, *this)); |
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81 if (err != KErrNone) |
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82 { |
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83 LOG(Log::Printf(_L("\tError creating Nif [error code = %d]"), err)); |
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84 } |
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85 } |
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86 LOG(Log::Printf(_L("Guqos::InterfaceAttached -- end"))); |
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87 } |
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88 |
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89 void CModuleGuqos::InterfaceDetached(const TDesC& /*aName*/, CNifIfBase* aIf) |
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90 { |
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91 LOG(Log::Printf(_L(""))); |
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92 LOG(Log::Printf(_L("Guqos::InterfaceDetached -- start"))); |
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93 iIfManager->DeleteNif(aIf); |
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94 LOG(Log::Printf(_L("Guqos::InterfaceDetached -- end"))); |
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95 } |
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96 |
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97 // references to protocol must be removed, i.e. drop all packets because they contain CFlowContext references |
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98 void CModuleGuqos::Unbind(CProtocolBase* /*aProtocol*/, TUint /*aId = 0*/) |
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99 { |
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100 LOG(Log::Printf(_L(""))); |
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101 LOG(Log::Printf(_L("Guqos::Unbind -- Nothing to do"))); |
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102 // NOTHING TO īDO FOR NOW |
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103 // CFlowData may include CFlowContext reference, but those |
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104 // are never dereferenced, unless the context is otherwise |
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105 // known to be valid (e.g. in OpenL or is referenced from |
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106 // RMBufSendInfo. Otherwise the reference is used only as |
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107 // opaque identifier. |
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108 } |
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109 |
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110 void CModuleGuqos::InitModuleL(MEventInterface& aEventInterface, CExtension* /*aData*/) |
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111 { |
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112 iNotify = &aEventInterface; |
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113 } |
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114 |
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115 void CModuleGuqos::OpenL(CFlowContext& aFlow, CNifIfBase* aIf) |
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116 { |
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117 LOG(Log::Printf(_L(""))); |
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118 LOG(Log::Printf(_L("Guqos::OpenL -- start"))); |
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119 CNif* nif = iIfManager->FindInterface(aIf); |
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120 if (!nif) |
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121 { |
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122 User::Leave(KErrNotFound); |
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123 } |
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124 CFlowData *flowdata = FindFlow(&aFlow); |
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125 if (flowdata) |
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126 { |
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127 User::Leave(KErrAlreadyExists); |
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128 } |
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129 |
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130 // Add new CFlowData to iList (will be the first element in the list) |
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131 iList = CFlowData::NewL(aFlow, *nif, iList); |
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132 iFlowCount++; |
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133 aFlow.iIgnoreFlowControl = ETrue; |
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134 iList->SetContext(nif->DefaultPdpContext()); |
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135 //aFlow.SetStatus(EFlow_READY); |
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136 LOG(Log::Printf(_L("Guqos::OpenL -- end"))); |
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137 } |
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138 |
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139 void CModuleGuqos::Close(CFlowContext& aFlow) |
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140 { |
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141 LOG(Log::Printf(_L(""))); |
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142 LOG(Log::Printf(_L("Guqos::Close -- start"))); |
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143 CFlowData* flowdata = CFlowData::Remove(&aFlow, &iList); |
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144 if (flowdata) |
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145 { |
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146 CPdpContext* context = flowdata->PdpContext(); |
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147 if (context && !context->IsPrimary()) |
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148 { |
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149 // Schedule a detached CClose request for updating |
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150 // the TFT filters on secondary context. (Either |
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151 // the context is flow specific or leave has not |
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152 // been issued). |
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153 CClose* request = CClose::New(*context); |
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154 if (request) |
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155 { |
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156 context->Nif().AddRequest(*request); |
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157 } |
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158 else |
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159 { |
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160 // Note: If the CClose cannot be allocated due to |
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161 // memory problem, the TFT will remain in effect, |
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162 // it will automaticly correct itself when there |
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163 // is another Leave or Close, that can be executed. |
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164 LOG(Log::Printf(_L("\tCannot schedule TFT filter removal due to out of memory"))); |
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165 } |
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166 } |
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167 iFlowCount--; |
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168 iIfManager->CancelPendingRequests(flowdata); |
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169 delete flowdata; |
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170 } |
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171 LOG(Log::Printf(_L("Guqos::Close -- end"))); |
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172 } |
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173 |
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174 void CModuleGuqos::Release(CFlowContext& aFlow) |
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175 { |
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176 LOG(Log::Printf(_L(""))); |
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177 LOG(Log::Printf(_L("Guqos::Release -- start"))); |
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178 CFlowData* flowdata = FindFlow(&aFlow); |
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179 if (!flowdata) |
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180 return; |
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181 // Abort any pending actions on the flow |
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182 iIfManager->CancelPendingRequests(flowdata); |
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183 |
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184 CPdpContext* context = flowdata->PdpContext(); |
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185 CPdpContext* default_context = flowdata->Nif().DefaultPdpContext(); |
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186 if (context && context != default_context) |
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187 { |
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188 // Flow was attached to some other context, shedule some |
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189 // cleanup for that context. |
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190 CClose* request = CClose::New(*context); |
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191 if (request) |
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192 { |
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193 context->Nif().AddRequest(*request); |
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194 } |
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195 } |
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196 // Note: this detaches the flow from the old context, |
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197 // and may trigger destruction of the "context". Do not |
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198 // reference "context" after this! (the sheduled |
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199 // request is also cancelled implicitly in such case). |
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200 flowdata->SetContext(default_context); |
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201 // Flow will be in blocked state, if default_context does not exist. |
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202 } |
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203 |
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204 void CModuleGuqos::OpenChannel(TInt aChannelId, const TQoSParameters& aParams, CExtensionPolicy& aPolicy, MQoSNegotiateEvent& aNotify, CFlowContext& aFlow) |
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205 { |
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206 LOG(Log::Printf(_L(""))); |
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207 LOG(Log::Printf(_L("Guqos::OpenChannel -- start id=%d"), aChannelId)); |
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208 TInt ret = KErrNone; |
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209 |
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210 for (;;) /* FOR EXISTS ONLY FOR BREAK EXITS */ |
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211 { |
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212 if (aChannelId <= 0) |
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213 { |
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214 // Channel ID must be > 0 |
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215 ret = KErrArgument; |
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216 break; |
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217 } |
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218 CFlowData *flowdata = FindFlow(&aFlow); |
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219 if (flowdata == NULL) |
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220 { |
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221 ret = KErrNotFound; |
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222 break; |
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223 } |
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224 |
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225 if (IfManager()->FindChannel(aChannelId)) |
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226 { |
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227 // Note: This could be due to FindChannel finding a channel |
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228 // which has the delayed destruction and QoS framework is |
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229 // for some reason reusing the channel id for new channel |
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230 // (not possible currently, because QoS does not reuse |
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231 // channel ids). |
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232 ret = KErrAlreadyExists; |
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233 break; |
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234 } |
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235 |
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236 // Instead of creating totally new secondary context, there |
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237 // could be a check for expiring, but not yet deleted contexts, |
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238 // and reuse one of them for this channel -- that action |
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239 // would require a different request class, not COpenChannel, |
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240 // which would renegotiate the channel and recompute it's |
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241 // filters. |
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242 // coverity[alloc_fn] coverity[assign] coverity [memory_leak] |
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243 COpenChannel* open_request = COpenChannel::New(aChannelId, *flowdata, &aNotify); |
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244 if (open_request == NULL) |
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245 { |
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246 ret = KErrNoMemory; |
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247 break; |
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248 } |
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249 open_request->SetParameters(aParams, aPolicy); |
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250 open_request->SetParametersFlowExtn(aPolicy); |
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251 flowdata->Nif().AddRequest(*open_request); |
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252 /* TERMINATE FOR LOOP -- OpenChannel success -- request completes asyncronously */ |
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253 LOG(Log::Printf(_L("Guqos::OpenChannel -- end"))); |
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254 return; |
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255 } |
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256 |
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257 aNotify.RequestComplete(ret, &aParams); |
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258 LOG(Log::Printf(_L("Guqos::OpenChannel -- end err=%d"), ret)); |
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259 } |
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260 |
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261 void CModuleGuqos::CloseChannel(TInt aChannelId) |
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262 { |
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263 LOG(Log::Printf(_L(""))); |
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264 LOG(Log::Printf(_L("Guqos::CloseChannel -- start id=%d"), aChannelId)); |
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265 if (aChannelId <= 0) |
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266 return; |
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267 CPdpContext* context = IfManager()->FindChannel(aChannelId); |
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268 if (!context) |
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269 return; |
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270 if (context->IsPrimary()) |
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271 { |
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272 // This is a secondary context turned into a default context. The use |
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273 // context as a channel is terminated, but it must continue to live as |
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274 // a default context. Thus, only remove the channel association from |
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275 // the context. |
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276 LOG(Log::Printf(_L("\tTurning secondary context into default only"))); |
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277 context->SetChannelId(0); |
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278 } |
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279 else |
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280 { |
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281 //?? Need to use CDeleteRequest request to serialize NIF control!!! |
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282 //?? What happens if this is called in the middle of some request processing? |
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283 context->Delete(); // Notify NIF, destroy context on NIF. |
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284 context->Nif().DeletePdpContext(context); |
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285 } |
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286 LOG(Log::Printf(_L("Guqos::CloseChannel -- end"))); |
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287 } |
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288 |
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289 void CModuleGuqos::NegotiateChannel(TInt aChannelId, const TQoSParameters& aParams, CExtensionPolicy& aPolicy, MQoSNegotiateEvent& aNotify) |
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290 { |
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291 LOG(Log::Printf(_L(""))); |
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292 LOG(Log::Printf(_L("Guqos::NegotiateChannel -- start id=%d"), aChannelId)); |
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293 TInt ret = KErrNone; |
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294 |
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295 if (aChannelId <= 0) |
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296 { |
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297 ret = KErrArgument; |
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298 } |
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299 else |
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300 { |
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301 CPdpContext* context = IfManager()->FindChannel(aChannelId); |
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302 if (context == NULL) |
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303 { |
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304 ret = KErrNotFound; |
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305 } |
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306 else |
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307 { |
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308 CNegotiateChannel* request = CNegotiateChannel::New(context, &aNotify); |
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309 if (request) |
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310 { |
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311 //coverity[leave_without_push] |
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312 request->SetParameters(aParams, aPolicy); |
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313 //coverity[leave_without_push] |
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314 request->SetParametersFlowExtn(aPolicy); |
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315 context->Nif().AddRequest(*request); |
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316 } |
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317 else |
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318 ret = KErrNoMemory; |
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319 } |
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320 } |
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321 |
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322 if (ret != KErrNone) |
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323 aNotify.RequestComplete(ret, &aParams); |
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324 LOG(Log::Printf(_L("Guqos::NegotiateChannel -- end res=%d"), ret)); |
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325 } |
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326 |
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327 void CModuleGuqos::Join(TInt aChannelId, CFlowContext& aFlow, MQoSNegotiateEvent& aNotify) |
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328 { |
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329 LOG(Log::Printf(_L(""))); |
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330 LOG(Log::Printf(_L("Guqos::JoinChannel -- start id=%d"), aChannelId)); |
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331 TInt ret = KErrNone; |
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332 CPdpContext* channel = IfManager()->FindChannel(aChannelId); |
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333 CFlowData *flowdata = FindFlow(&aFlow); |
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334 if (!channel || !flowdata) |
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335 ret = KErrNotFound; |
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336 else |
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337 { |
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338 CJoinRequest* join_request = CJoinRequest::New(channel, flowdata, &aNotify); |
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339 if (join_request) |
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340 channel->Nif().AddRequest(*join_request); |
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341 else |
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342 ret = KErrNoMemory; |
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343 } |
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344 |
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345 if (ret != KErrNone) |
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346 aNotify.RequestComplete(ret, NULL); |
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347 LOG(Log::Printf(_L("Guqos::JoinChannel -- end err=%d"), ret)); |
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348 } |
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349 |
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350 void CModuleGuqos::Leave(TInt aChannelId, CFlowContext& aFlow, MQoSNegotiateEvent& aNotify) |
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351 { |
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352 LOG(Log::Printf(_L(""))); |
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353 LOG(Log::Printf(_L("Guqos::LeaveChannel -- start id=%d"), aChannelId)); |
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354 TInt ret = KErrNone; |
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355 CPdpContext* channel = IfManager()->FindChannel(aChannelId); |
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356 CFlowData *flowdata = FindFlow(&aFlow); |
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357 if (!channel || !flowdata) |
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358 ret = KErrNotFound; |
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359 |
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360 if (ret == KErrNone) |
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361 { |
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362 CLeaveRequest* leave_request = CLeaveRequest::New(channel, flowdata, &aNotify); |
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363 if (leave_request) |
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364 channel->Nif().AddRequest(*leave_request); |
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365 else |
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366 ret = KErrNoMemory; |
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367 } |
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368 |
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369 if (ret != KErrNone) |
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370 aNotify.RequestComplete(ret, NULL); |
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371 LOG(Log::Printf(_L("Guqos::LeaveChannel -- end ret=%d"), ret)); |
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372 } |
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373 |
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374 void CModuleGuqos::Negotiate(CFlowContext &aFlow, const TQoSParameters& aParams, MQoSNegotiateEvent& aNotify) |
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375 { |
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376 LOG(Log::Printf(_L(""))); |
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377 LOG(Log::Printf(_L("Guqos::Negotiate -- start"))); |
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378 TInt ret = KErrNone; |
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379 |
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380 for (;;) /* FOR EXISTS ONLY FOR BREAK EXITS */ |
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381 { |
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382 CFlowData* flowdata = FindFlow(&aFlow); |
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383 if (!flowdata) |
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384 { |
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385 ret = KErrNotFound; |
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386 break; |
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387 } |
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388 //?? This needs rework and specification of how things should work! |
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389 //?? But, for now the assumption is that the Negotiate() is not used in the |
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390 //?? current framework. |
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391 |
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392 // The Negotiate operation does not have the extension policies as parameter, |
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393 // like OpenChannel or NegotiateChannel has. The code below attempts to fix |
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394 // this by searching the matching policy. However, only first found is used |
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395 // (in order Override, Application, Default). This gets murky, if more than |
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396 // one match would exist -- should extensions be merged in such case? |
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397 CExtensionPolicy *policy = NULL; |
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398 if ((policy = (CExtensionPolicy*)iNotify->Lookup(aFlow, EPfqosExtensionPolicy, EPfqosOverridePriority)) == NULL && |
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399 (policy = (CExtensionPolicy*)iNotify->Lookup(aFlow, EPfqosExtensionPolicy, EPfqosApplicationPriority)) == NULL && |
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400 (policy = (CExtensionPolicy*)iNotify->Lookup(aFlow, EPfqosExtensionPolicy, EPfqosDefaultPriority)) == NULL) |
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401 { |
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402 ret = KErrNotFound; |
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403 break; |
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404 } |
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405 |
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406 // Instead of creating totally new context, one could search for |
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407 // expiring contexts, and reuse one of them for this flow. Could |
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408 // also prefer a context that has been used for this same flow |
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409 // previously -- less negotiating, as the filter might already be |
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410 // correct. |
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411 COpenChannel* negotiate_request = COpenChannel::New(0, *flowdata, &aNotify); |
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412 if (negotiate_request == NULL) |
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413 { |
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414 ret = KErrNoMemory; |
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415 break; |
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416 } |
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417 //coverity[leave_without_push] |
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418 negotiate_request->SetParameters(aParams, *policy); |
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419 //coverity[leave_without_push] |
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420 negotiate_request->SetParametersFlowExtn(*policy); |
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421 flowdata->Nif().AddRequest(*negotiate_request); |
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422 LOG(Log::Printf(_L("Guqos::Negotiate -- end OK"))); |
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423 return; |
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424 } |
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425 |
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426 aNotify.RequestComplete(ret, &aParams); |
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427 LOG(Log::Printf(_L("Guqos::Negotiate -- end ret=%d"), ret)); |
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428 } |
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429 |
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430 TInt CModuleGuqos::Configure(TUint aLevel,TUint aName, TDes8& aOption, TAny* /*aSource*/) |
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431 { |
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432 LOG(Log::Printf(_L("guqos::Configure"))); |
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433 if (aLevel == KSOLQoSModule) |
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434 { |
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435 switch (aName) |
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436 { |
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437 case KSoCapabilities: |
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438 if (aOption.Length() >= (TInt)sizeof(TInt)) |
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439 { |
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440 //lint -e{826} complains, pointer conversion is ok |
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441 TInt& opt = *(TInt*)aOption.Ptr(); |
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442 opt = KModuleCapabilites; |
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443 return KErrNone; |
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444 } |
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445 return KErrArgument; |
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446 default: |
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447 break; |
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448 } |
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449 } |
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450 return KErrNotSupported; |
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451 } |
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452 |
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453 |
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454 TInt CModuleGuqos::Send(RMBufChain& aPacket, CProtocolBase* /*aSourceProtocol*/) |
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455 { |
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456 for (;;) /* FOREVER, ONLY FOR BREAK EXITS */ |
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457 { |
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458 RMBufSendInfo* const info = RMBufSendPacket::PeekInfoInChain(aPacket); |
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459 if (!info) |
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460 { |
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461 // Malformed packet, cannot do anything with it |
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462 LOG(Log::Printf(_L("Guqos::Send -- packet has no info block!"))); |
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463 break; |
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464 } |
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465 CFlowContext* const context = info->iFlow.FlowContext(); |
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466 if (!context) |
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467 { |
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468 // Malformed packet, cannot do anything with it |
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469 LOG(Log::Printf(_L("Guqos::Send -- packet has no flow context!"))); |
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470 break; |
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471 } |
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472 |
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473 CFlowData* flowdata = FindFlow(context); |
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474 if (!flowdata) |
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475 { |
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476 // Flow is not registered with GUQOS and this Send should |
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477 // not have happened. |
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478 info->iFlow.Close(); |
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479 LOG(Log::Printf(_L("Guqos::Send -- flow is not open in GUQOS!"))); |
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480 break; |
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481 } |
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482 return flowdata->Send(aPacket, *info); |
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483 } |
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484 aPacket.Free(); |
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485 return 1; |
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486 } |
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487 |
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488 void CModuleGuqos::Identify(TServerProtocolDesc* aProtocolDesc) const |
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489 { |
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490 Identify(*aProtocolDesc); |
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491 } |
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492 |
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493 void CModuleGuqos::Identify(TServerProtocolDesc& aDesc) |
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494 { |
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495 _LIT(Kguqos, "quqos"); |
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496 |
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497 aDesc.iName=Kguqos; |
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498 aDesc.iAddrFamily=KAfInet; |
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499 aDesc.iSockType=KSockDatagram; |
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500 aDesc.iProtocol=KModuleGUQoS; |
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501 aDesc.iVersion=TVersion(KMajorVersionNumber, KMinorVersionNumber, KBuildVersionNumber); |
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502 aDesc.iByteOrder=EBigEndian; |
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503 aDesc.iServiceInfo=0; |
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504 aDesc.iNamingServices=0; |
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505 aDesc.iSecurity=KSocketNoSecurity; |
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506 aDesc.iMessageSize=0xffff; |
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507 aDesc.iServiceTypeInfo=EPreferMBufChains | ENeedMBufs; |
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508 aDesc.iNumSockets=KUnlimitedSockets; |
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509 } |
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510 |
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511 |
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512 |
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513 CFlowData* CModuleGuqos::FindFlow(const CFlowContext* aFlow) |
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514 { |
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515 return CFlowData::Find(aFlow, iList); |
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516 } |
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517 |
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518 // Default parameters are fetched from the QoS policy db. |
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519 TInt CModuleGuqos::GetDefaultParameters(TQoSRequested& aParameters, TUint32 aIapId) |
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520 { |
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521 TInetAddr addr; |
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522 addr.SetAddress(KInet6AddrNone); |
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523 TUidType uid(TUid::Uid(0), TUid::Uid(0), TUid::Uid(0)); |
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524 CExtensionPolicy* sel = (CExtensionPolicy*)iNotify->Lookup(addr, addr, 0, 0, 0, EPfqosExtensionPolicy, uid, aIapId, 0); |
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525 if (!sel) |
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526 return KErrNotFound; |
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527 aParameters.ParsePolicyData(sel); |
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528 return KErrNone; |
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529 } |