1 // Copyright (c) 2004-2009 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 // Defines the interface to the BCA & flow control. |
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15 // |
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16 // |
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17 |
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18 /** |
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19 @file |
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20 */ |
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21 |
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22 #ifndef BCACONTROLLER_H |
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23 #define BCACONTROLLER_H |
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24 |
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25 #include <e32base.h> |
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26 #include <c32comm.h> |
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27 |
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28 #include "MControllerObserver.h" |
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29 #include "bttlog.h" |
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30 #include "Constants.h" |
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31 |
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32 #ifdef RAWIP_HEADER_APPENDED_TO_PACKETS |
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33 #include "IPTagHeader.h" |
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34 #endif // RAWIP_HEADER_APPENDED_TO_PACKETS |
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35 |
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36 class CBttLogger; |
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37 |
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38 /** |
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39 @internalComponent |
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40 */ |
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41 class CBcaController : public CBase |
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42 { |
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43 public: |
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44 CBcaController(MControllerObserver& aObserver, CBttLogger* aTheLogger); |
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45 void BaseConstructL(); |
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46 ~CBcaController(); |
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47 |
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48 public: // Flow Control |
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49 void UpdateInternalFlowFlag(TFlowControl aValue); |
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50 void UpdateContextStateFlag(TBool aValue); |
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51 TBool IsTxPossible(); |
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52 |
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53 public: |
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54 virtual void StartL() = 0; |
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55 virtual void Stop(TInt aError = KErrNone) = 0; |
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56 |
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57 #ifdef RAWIP_HEADER_APPENDED_TO_PACKETS |
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58 public: //tag headers |
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59 void SetType(TUint16 aType); |
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60 void AddHeader(TDes8& aDes); |
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61 TUint16 RemoveHeader(RMBufChain& aPdu); |
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62 #endif // RAWIP_HEADER_APPENDED_TO_PACKETS |
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63 |
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64 public: // Process Down/Up stack data packets |
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65 void Process(TDesC8& aPdu); |
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66 TInt Send(RMBufChain& aPdu); |
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67 void SendComplete(); |
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68 // Get the NIF reference. |
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69 inline MControllerObserver& GetObserver(); |
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70 protected: |
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71 virtual void BcaSend(RMBufChain& aPdu) = 0; |
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72 virtual void BcaProcess(TDesC8& aPdu) = 0; |
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73 virtual void BcaSendComplete() = 0; |
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74 virtual TInt BcaSendBufferLength() = 0; |
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75 |
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76 protected: |
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77 enum TSendState |
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78 { |
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79 EIdle, |
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80 ESending, |
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81 EShuttingDown |
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82 }; |
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83 |
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84 enum TInitialisationState |
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85 { |
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86 EStart, |
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87 EBcaController, |
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88 EInitialised |
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89 }; |
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90 |
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91 inline TInt GetSendState(); |
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92 inline void SendState(TSendState aState); |
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93 |
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94 private: // Flow Control |
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95 void ResumeSending(); |
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96 //Buffer control |
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97 TBool IsSendQueueEmpty(); |
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98 TBool IsSendQueueFull(); |
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99 void AppendToSendQueue(RMBufChain& aPdu); |
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100 TBool RemoveFromSendQueue(RMBufChain& aPdu); |
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101 void EmptySendQueue(); |
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102 |
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103 private: // Unowned data. |
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104 MControllerObserver& iObserver; |
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105 protected: |
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106 CBttLogger* iTheLogger; |
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107 |
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108 private: |
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109 // Flow control flags |
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110 TFlowControl iTxFlowControl; |
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111 TBool iTxContextActive; |
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112 TSendState iSendState; |
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113 |
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114 /** The internal packet buffer */ |
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115 RMBufPktQ iSendQueue; |
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116 /** The maximum number of packets that we want in an internal queue */ |
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117 TInt iMaxSendQueueLen; |
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118 /** Current number of packets in the internal packet buffer */ |
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119 TInt iNumPacketsInSendQueue; |
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120 |
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121 #ifdef RAWIP_HEADER_APPENDED_TO_PACKETS |
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122 CIPTagHeader* iIPTagHeader; |
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123 #endif // RAWIP_HEADER_APPENDED_TO_PACKETS |
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124 }; |
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125 |
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126 void CBcaController::SendState(TSendState aState) |
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127 { |
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128 iSendState = aState; |
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129 } |
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130 |
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131 TInt CBcaController::GetSendState() |
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132 { |
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133 return iSendState; |
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134 } |
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135 |
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136 |
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137 MControllerObserver& CBcaController::GetObserver() |
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138 { |
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139 return iObserver; |
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140 } |
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141 |
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142 #endif // BCACONTROLLER_H |
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