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1 /* |
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2 * Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: This class implements WLAN background scan logic. |
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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 * %version: 2 % |
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20 */ |
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21 |
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22 #include <e32base.h> |
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23 #include <e32const.h> |
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24 |
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25 #include "wlanscanproviderinterface.h" |
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26 #include "awsinterface.h" |
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27 #include "awsenginebase.h" |
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28 #include "wlancbwaiter.h" |
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29 #include "wlanbgscanawscommsinterface.h" |
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30 #include "wlanbgscan.h" |
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31 #include "wlanbgscanstates.h" |
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32 #include "wlandevicesettings.h" // default values in case invalid data is passed in NotifyChangedSettings |
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33 #include "wlantimer.h" |
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34 #include "am_debug.h" |
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35 |
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36 /** Constant indicating that scanning is disabled */ |
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37 const TUint32 KWlanNoScanning( 0xFFFFFFFF ); |
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38 |
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39 // ======== MEMBER FUNCTIONS ======== |
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40 |
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41 // --------------------------------------------------------------------------- |
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42 // CWlanBgScanStates::CWlanBgScanStates |
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43 // --------------------------------------------------------------------------- |
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44 // |
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45 CWlanBgScanStates::CWlanBgScanStates( CWlanBgScan& aBgScan, MWlanScanResultProvider& aProvider, MWlanTimerServices& aTimerServices ) : |
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46 iBgScan( aBgScan ), |
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47 iUsedBgScanInterval( KWlanNoScanning ), |
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48 iBgScanInterval( KWlanNoScanning ), |
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49 iAggressiveBgScanInterval( KWlanNoScanning ), |
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50 iAggressiveBgScanTimer( NULL ), |
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51 iNextState( EBgScanStateMax ), |
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52 iAwsStartupStatus( KErrNotFound ), |
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53 iAwsCmd( MWlanBgScanAwsComms::EAwsCommandMax ), |
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54 iAwsCmdStatus( KErrNone ), |
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55 iAutoInterval( KWlanBgScanIntervalNever ), |
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56 iProvider( aProvider ), |
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57 iTimerServices( aTimerServices ), |
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58 iBgScanState( EBgScanStateMax ), |
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59 iIntervalChangeRequestId( 0 ), |
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60 iCompletedAwsCommand( MWlanBgScanAwsComms::EAwsCommandMax ), |
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61 iAwsCommandCompletionCode( KErrNone ) |
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62 { |
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63 DEBUG( "CWlanBgScanStates::CWlanBgScanStates()" ); |
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64 } |
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65 |
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66 // --------------------------------------------------------------------------- |
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67 // CWlanBgScanStates::ConstructL |
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68 // --------------------------------------------------------------------------- |
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69 // |
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70 void CWlanBgScanStates::ConstructL() |
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71 { |
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72 DEBUG( "CWlanBgScanStates::ConstructL()" ); |
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73 |
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74 if( iBgScan.AwsPresence() == CWlanBgScan::EAwsStarting ) |
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75 { |
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76 DEBUG( "CWlanBgScanStates::ConstructL() - AWS starting up, goto Init state" ); |
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77 iBgScanState = EBgScanInit; |
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78 } |
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79 else |
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80 { |
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81 DEBUG( "CWlanBgScanStates::ConstructL() - AWS not present, goto Off state" ); |
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82 iBgScanState = EBgScanOff; |
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83 } |
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84 |
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85 // Create a timer for guarding when to drop out of aggressive BG scan mode |
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86 iAggressiveBgScanTimer = CWlanTimer::NewL( TCallBack( StopAggressiveBgScan, this ), |
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87 TCallBack( StopAggressiveBgScan, this ), |
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88 TCallBack( StopAggressiveBgScan, this ) ); |
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89 |
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90 DEBUG( "CWlanBgScanStates::ConstructL() - done" ); |
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91 } |
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92 |
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93 // --------------------------------------------------------------------------- |
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94 // CWlanBgScanStates::~CWlanBgScanStates |
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95 // --------------------------------------------------------------------------- |
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96 // |
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97 CWlanBgScanStates::~CWlanBgScanStates() |
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98 { |
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99 DEBUG( "CWlanBgScanStates::~CWlanBgScanStates()" ); |
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100 delete iAggressiveBgScanTimer; |
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101 } |
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102 |
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103 // --------------------------------------------------------------------------- |
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104 // CWlanBgScanStates::StartAggressiveBgScan |
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105 // --------------------------------------------------------------------------- |
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106 // |
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107 void CWlanBgScanStates::StartAggressiveBgScan( TUint32& aInterval, TUint32& aDuration ) |
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108 { |
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109 DEBUG3( "CWlanBgScanStates::StartAggressiveBgScan() - new interval: %u, old interval: %u, duration: %u", |
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110 aInterval, iAggressiveBgScanInterval, aDuration ); |
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111 // Serve the request only if the requested interval is smaller or equal than |
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112 // what is already being served |
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113 if( aInterval <= iAggressiveBgScanInterval ) |
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114 { |
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115 iAggressiveBgScanInterval = aInterval; |
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116 |
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117 // Start the timer guarding when to drop out of aggressive mode |
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118 iAggressiveBgScanTimer->Cancel(); |
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119 iAggressiveBgScanTimer->After( aDuration ); |
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120 |
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121 // Refresh interval used in BG scanning |
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122 RefreshUsedInterval(); |
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123 } |
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124 } |
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125 |
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126 // --------------------------------------------------------------------------- |
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127 // CWlanBgScanStates::StopAggressiveBgScan |
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128 // --------------------------------------------------------------------------- |
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129 // |
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130 TInt CWlanBgScanStates::StopAggressiveBgScan( TAny* aPtr ) |
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131 { |
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132 DEBUG( "CWlanBgScanStates::StopAggressiveBgScan()" ); |
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133 |
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134 CWlanBgScanStates* self = static_cast<CWlanBgScanStates*>( aPtr ); |
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135 |
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136 // Disable aggressive mode |
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137 self->iAggressiveBgScanInterval = KWlanNoScanning; |
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138 |
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139 // Refresh interval used in BG scanning |
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140 self->RefreshUsedInterval(); |
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141 |
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142 return KErrNone; |
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143 } |
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144 |
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145 // --------------------------------------------------------------------------- |
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146 // CWlanBgScanStates::GetBgInterval |
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147 // --------------------------------------------------------------------------- |
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148 // |
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149 TUint32 CWlanBgScanStates::GetBgInterval() |
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150 { |
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151 TUint32 scanInterval( iUsedBgScanInterval ); |
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152 |
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153 if( scanInterval == KWlanNoScanning ) |
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154 { |
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155 scanInterval = KWlanBgScanIntervalNever; |
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156 } |
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157 |
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158 return scanInterval; |
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159 } |
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160 |
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161 // --------------------------------------------------------------------------- |
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162 // CWlanBgScanStates::IntervalChanged |
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163 // --------------------------------------------------------------------------- |
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164 // |
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165 void CWlanBgScanStates::IntervalChanged() |
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166 { |
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167 DEBUG( "CWlanBgScanStates::IntervalChanged()" ); |
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168 |
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169 if( iBgScan.AwsPresence() == CWlanBgScan::EAwsStarting ) |
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170 { |
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171 DEBUG( "CWlanBgScanStates::IntervalChanged() - AWS is still starting up, returning" ); |
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172 return; |
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173 } |
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174 |
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175 NextState( CWlanBgScanStates::EBgScanEventIntervalChanged ); |
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176 |
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177 DEBUG2( "CWlanBgScanStates::IntervalChanged() - current interval %u, current state %u", |
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178 GetBgInterval(), |
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179 iBgScanState ); |
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180 } |
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181 |
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182 // --------------------------------------------------------------------------- |
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183 // CWlanBgScanStates::NextState |
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184 // --------------------------------------------------------------------------- |
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185 // |
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186 void CWlanBgScanStates::NextState( const CWlanBgScanStates::TWlanBgScanSmEvent& aEvent ) |
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187 { |
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188 DEBUG1( "CWlanBgScanStates::NextState() - aEvent %u", aEvent ); |
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189 |
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190 switch ( iBgScanState ) |
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191 { |
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192 case EBgScanInit: |
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193 { |
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194 InStateInit( iBgScanState, aEvent ); |
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195 break; |
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196 } |
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197 case EBgScanOff: |
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198 { |
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199 InStateOff( iBgScanState, aEvent ); |
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200 break; |
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201 } |
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202 case EBgScanOn: |
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203 { |
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204 InStateOn( iBgScanState, aEvent ); |
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205 break; |
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206 } |
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207 case EBgScanAuto: |
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208 { |
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209 InStateAuto( iBgScanState, aEvent ); |
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210 break; |
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211 } |
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212 case EBgScanAutoAws: |
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213 { |
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214 InStateAutoAws( iBgScanState, aEvent ); |
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215 break; |
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216 } |
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217 case EBgScanSendingAwsCmd: |
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218 { |
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219 InStateSendingAwsCmd( iBgScanState, aEvent ); |
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220 break; |
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221 } |
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222 default: |
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223 { |
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224 DEBUG1( "CWlanBgScanStates::NextState() - error: invalid state %d", iBgScanState ); |
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225 ASSERT( 0 ); |
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226 break; |
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227 } |
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228 } |
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229 } |
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230 |
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231 // --------------------------------------------------------------------------- |
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232 // CWlanBgScanStates::InStateInit |
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233 // --------------------------------------------------------------------------- |
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234 // |
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235 void CWlanBgScanStates::InStateInit( TWlanBgScanState& aState, const CWlanBgScanStates::TWlanBgScanSmEvent& aEvent ) |
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236 { |
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237 switch( aEvent ) |
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238 { |
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239 case CWlanBgScanStates::EBgScanEventAwsStartupComplete: |
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240 { |
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241 DEBUG( "CWlanBgScanStates::InStateInit() - event: EBgScanEventAwsStartupComplete" ); |
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242 switch( AwsStartupStatus() ) |
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243 { |
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244 case KErrNone: |
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245 { |
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246 DEBUG( "CWlanBgScanStates::InStateInit() - AWS startup successful" ); |
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247 switch ( iBgScanSettings.backgroundScanInterval ) |
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248 { |
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249 case KWlanBgScanIntervalNever: |
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250 { |
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251 DEBUG( "CWlanBgScanStates::InStateInit() - state change Init to Off" ); |
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252 StateChangeInitToOff( aState ); |
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253 break; |
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254 } |
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255 case KWlanBgScanIntervalAutomatic: |
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256 { |
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257 DEBUG( "CWlanBgScanStates::InStateInit() - state change Init to AutoAws" ); |
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258 StateChangeInitToAutoAws( aState ); |
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259 break; |
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260 } |
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261 default: |
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262 { |
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263 DEBUG( "CWlanBgScanStates::InStateInit() - state change Init to On" ); |
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264 StateChangeInitToOn( aState ); |
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265 } |
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266 } |
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267 break; |
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268 } |
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269 default: |
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270 { |
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271 DEBUG1( "CWlanBgScanStates::InStateInit() - AWS startup failed! Status %d", AwsStartupStatus() ); |
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272 switch ( iBgScanSettings.backgroundScanInterval ) |
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273 { |
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274 case KWlanBgScanIntervalNever: |
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275 { |
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276 DEBUG( "CWlanBgScanStates::InStateInit() - state change Init to Off" ); |
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277 StateChangeInitToOff( aState ); |
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278 break; |
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279 } |
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280 case KWlanBgScanIntervalAutomatic: |
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281 { |
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282 DEBUG( "CWlanBgScanStates::InStateInit() - state change Init to Auto" ); |
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283 StateChangeInitToAuto( aState ); |
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284 break; |
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285 } |
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286 default: |
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287 { |
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288 DEBUG( "CWlanBgScanStates::InStateInit() - state change Init to On" ); |
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289 StateChangeInitToOn( aState ); |
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290 break; |
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291 } |
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292 } |
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293 break; |
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294 } |
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295 } |
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296 break; |
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297 } |
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298 default: |
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299 { |
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300 DEBUG1( "CWlanBgScanStates::InStateInit() - event %d ignored", aEvent ); |
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301 } |
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302 } |
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303 } |
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304 |
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305 // --------------------------------------------------------------------------- |
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306 // CWlanBgScanStates::StateChangeInitToOn |
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307 // --------------------------------------------------------------------------- |
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308 // |
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309 void CWlanBgScanStates::StateChangeInitToOn( TWlanBgScanState& aState ) |
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310 { |
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311 DEBUG( "CWlanBgScanStates::StateChangeInitToOn()" ); |
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312 aState = EBgScanOn; |
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313 SetInterval( iBgScanSettings.backgroundScanInterval ); |
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314 } |
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315 |
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316 // --------------------------------------------------------------------------- |
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317 // CWlanBgScanStates::StateChangeInitToOff |
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318 // --------------------------------------------------------------------------- |
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319 // |
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320 void CWlanBgScanStates::StateChangeInitToOff( TWlanBgScanState& aState ) |
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321 { |
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322 DEBUG( "CWlanBgScanStates::StateChangeInitToOff()" ); |
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323 aState = EBgScanOff; |
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324 SetInterval( KWlanBgScanIntervalNever ); |
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325 } |
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326 |
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327 // --------------------------------------------------------------------------- |
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328 // CWlanBgScanStates::StateChangeInitToAuto |
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329 // --------------------------------------------------------------------------- |
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330 // |
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331 void CWlanBgScanStates::StateChangeInitToAuto( TWlanBgScanState& aState ) |
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332 { |
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333 aState = EBgScanAuto; |
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334 DEBUG( "CWlanBgScanStates::StateChangeInitToAuto() - determine next interval change time and request callback" ); |
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335 iBgScan.ScheduleAutoIntervalChange(); |
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336 SetInterval( iBgScan.CurrentAutoInterval() ); |
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337 } |
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338 |
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339 // --------------------------------------------------------------------------- |
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340 // CWlanBgScanStates::InStateOff |
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341 // --------------------------------------------------------------------------- |
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342 // |
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343 void CWlanBgScanStates::InStateOff( TWlanBgScanState& aState, const CWlanBgScanStates::TWlanBgScanSmEvent& aEvent ) |
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344 { |
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345 switch( aEvent ) |
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346 { |
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347 case CWlanBgScanStates::EBgScanEventIntervalChanged: |
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348 { |
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349 DEBUG( "CWlanBgScanStates::InStateOff() - event: EBgScanEventIntervalChanged" ); |
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350 switch( iBgScanSettings.backgroundScanInterval ) |
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351 { |
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352 case KWlanBgScanIntervalNever: |
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353 { |
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354 DEBUG( "CWlanBgScanStates::InStateOff() - no change in the interval" ); |
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355 aState = EBgScanOff; |
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356 break; |
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357 } |
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358 case KWlanBgScanIntervalAutomatic: |
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359 { |
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360 DEBUG( "CWlanBgScanStates::InStateOff() - state change Off to Automatic" ); |
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361 StateChangeOffToAutomatic( aState ); |
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362 break; |
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363 } |
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364 default: |
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365 { |
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366 DEBUG1( "CWlanBgScanStates::InStateOff() - state change Off to On (interval: %u)", iBgScanSettings.backgroundScanInterval ); |
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367 StateChangeOffToOn( aState, iBgScanSettings.backgroundScanInterval ); |
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368 } |
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369 } |
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370 break; |
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371 } |
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372 default: |
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373 { |
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374 DEBUG1( "CWlanBgScanStates::InStateOff() - event %d ignored", aEvent ); |
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375 } |
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376 } |
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377 } |
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378 |
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379 // --------------------------------------------------------------------------- |
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380 // CWlanBgScanStates::StateChangeOffToOn |
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381 // --------------------------------------------------------------------------- |
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382 // |
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383 void CWlanBgScanStates::StateChangeOffToOn( TWlanBgScanState& aState, TUint32 aNewBgScanInterval ) |
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384 { |
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385 aState = EBgScanOn; |
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386 SetInterval( aNewBgScanInterval ); |
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387 } |
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388 |
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389 // --------------------------------------------------------------------------- |
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390 // CWlanBgScanStates::StateChangeOffToAutomatic |
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391 // --------------------------------------------------------------------------- |
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392 // |
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393 void CWlanBgScanStates::StateChangeOffToAutomatic( TWlanBgScanState& aState ) |
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394 { |
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395 if ( iBgScan.AwsPresence() == CWlanBgScan::EAwsPresent ) |
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396 { |
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397 DEBUG( "CWlanBgScanStates::StateChangeOffToAutomatic() - state change Off to SendingAwsCmd" ); |
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398 aState = EBgScanSendingAwsCmd; |
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399 DEBUG( "CWlanBgScanStates::InStaStateChangeOffToAutomaticteOff() - if command sending succeeds, next state is AutoAws" ); |
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400 iNextState = EBgScanAutoAws; |
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401 MWlanBgScanAwsComms::TAwsMessage msg = { MWlanBgScanAwsComms::EStart, 0 }; |
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402 iBgScan.AwsCommand( msg ); |
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403 DEBUG( "CWlanBgScanStates::StateChangeOffToAutomatic() - SendOrQueueAwsCommand() returned" ); |
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404 } |
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405 else |
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406 { |
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407 DEBUG( "CWlanBgScanStates::StateChangeOffToAutomatic() - state change Off to Auto" ); |
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408 DEBUG( "CWlanBgScanStates::StateChangeOffToAutomatic() - determine next interval change time and request callback" ); |
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409 aState = EBgScanAuto; |
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410 iBgScan.ScheduleAutoIntervalChange(); |
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411 SetInterval( iBgScan.CurrentAutoInterval() ); |
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412 } |
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413 } |
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414 // --------------------------------------------------------------------------- |
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415 // CWlanBgScanStates::InStateOn |
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416 // --------------------------------------------------------------------------- |
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417 // |
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418 void CWlanBgScanStates::InStateOn( TWlanBgScanState& aState, const CWlanBgScanStates::TWlanBgScanSmEvent& aEvent ) |
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419 { |
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420 switch( aEvent ) |
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421 { |
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422 case CWlanBgScanStates::EBgScanEventIntervalChanged: |
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423 { |
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424 DEBUG( "CWlanBgScanStates::InStateOn() - event: EBgScanEventIntervalChanged" ); |
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425 switch( iBgScanSettings.backgroundScanInterval ) |
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426 { |
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427 case KWlanBgScanIntervalNever: |
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428 { |
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429 DEBUG( "CWlanBgScanStates::InStateOn() - state change On to Off" ); |
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430 StateChangeOnToOff( aState ); |
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431 break; |
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432 } |
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433 case KWlanBgScanIntervalAutomatic: |
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434 { |
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435 DEBUG( "CWlanBgScanStates::InStateOn() - state change On to Auto" ); |
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436 StateChangeOnToAutomatic( aState ); |
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437 break; |
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438 } |
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439 default: |
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440 { |
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441 DEBUG( "CWlanBgScanStates::InStateOn() - state change On to On" ); |
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442 StateChangeOnToOn( aState, iBgScanSettings.backgroundScanInterval ); |
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443 } |
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444 } |
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445 break; |
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446 } |
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447 default: |
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448 { |
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449 DEBUG1( "CWlanBgScanStates::InStateOn() - event %d ignored", aEvent ); |
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450 } |
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451 } |
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452 } |
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453 |
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454 // --------------------------------------------------------------------------- |
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455 // CWlanBgScanStates::StateChangeOnToOn |
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456 // --------------------------------------------------------------------------- |
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457 // |
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458 void CWlanBgScanStates::StateChangeOnToOn( TWlanBgScanState& aState, TUint32 aNewBgScanSetting ) |
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459 { |
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460 aState = EBgScanOn; |
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461 SetInterval( aNewBgScanSetting ); |
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462 } |
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463 |
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464 // --------------------------------------------------------------------------- |
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465 // CWlanBgScanStates::StateChangeOnToAutomatic |
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466 // --------------------------------------------------------------------------- |
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467 // |
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468 void CWlanBgScanStates::StateChangeOnToAutomatic( TWlanBgScanState& aState ) |
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469 { |
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470 if ( iBgScan.AwsPresence() == CWlanBgScan::EAwsPresent ) |
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471 { |
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472 DEBUG( "CWlanBgScanStates::StateChangeOnToAutomatic() - state change Init to SendingAwsCmd" ); |
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473 aState = EBgScanSendingAwsCmd; |
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474 DEBUG( "CWlanBgScanStates::StateChangeOnToAutomatic() - if command sending succeeds, next state is AutoAws" ); |
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475 iNextState = EBgScanAutoAws; |
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476 MWlanBgScanAwsComms::TAwsMessage msg = { MWlanBgScanAwsComms::EStart, 0 }; |
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477 iBgScan.AwsCommand( msg ); |
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478 DEBUG( "CWlanBgScanStates::StateChangeOnToAutomatic() - SendOrQueueAwsCommand() returned" ); |
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479 } |
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480 else |
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481 { |
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482 aState = EBgScanAuto; |
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483 iBgScan.ScheduleAutoIntervalChange(); |
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484 SetInterval( iBgScan.CurrentAutoInterval() ); |
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485 } |
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486 } |
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487 |
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488 // --------------------------------------------------------------------------- |
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489 // CWlanBgScanStates::StateChangeOnToOff |
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490 // --------------------------------------------------------------------------- |
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491 // |
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492 void CWlanBgScanStates::StateChangeOnToOff( TWlanBgScanState& aState ) |
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493 { |
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494 aState = EBgScanOff; |
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495 SetInterval( KWlanBgScanIntervalNever ); |
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496 } |
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497 |
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498 // --------------------------------------------------------------------------- |
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499 // CWlanBgScanStates::InStateAuto |
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500 // --------------------------------------------------------------------------- |
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501 // |
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502 void CWlanBgScanStates::InStateAuto( TWlanBgScanState& aState, const CWlanBgScanStates::TWlanBgScanSmEvent& aEvent ) |
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503 { |
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504 switch( aEvent ) |
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505 { |
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506 case CWlanBgScanStates::EBgScanEventIntervalChanged: |
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507 { |
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508 DEBUG( "CWlanBgScanStates::InStateAuto() - event: EBgScanEventIntervalChanged" ); |
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509 switch( iBgScanSettings.backgroundScanInterval ) |
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510 { |
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511 case KWlanBgScanIntervalNever: |
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512 { |
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513 DEBUG( "CWlanBgScanStates::InStateAuto() - state change Auto to Off" ); |
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514 StateChangeAutoToOff( aState ); |
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515 break; |
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516 } |
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517 case KWlanBgScanIntervalAutomatic: |
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518 { |
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519 DEBUG( "CWlanBgScanStates::InStateAuto() - state still Auto" ); |
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520 StateChangeAutoToAuto( aState ); |
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521 break; |
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522 } |
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523 default: |
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524 { |
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525 DEBUG( "CWlanBgScanStates::InStateAuto() - state change Auto to On" ); |
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526 StateChangeAutoToOn( aState, iBgScanSettings.backgroundScanInterval ); |
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527 } |
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528 } |
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529 break; |
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530 } |
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531 default: |
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532 { |
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533 DEBUG1( "CWlanBgScanStates::InStateAuto() - event %d ignored", aEvent ); |
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534 } |
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535 } |
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536 } |
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537 |
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538 // --------------------------------------------------------------------------- |
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539 // CWlanBgScanStates::StateChangeAutoToOff |
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540 // --------------------------------------------------------------------------- |
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541 // |
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542 void CWlanBgScanStates::StateChangeAutoToOff( TWlanBgScanState& aState ) |
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543 { |
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544 aState = EBgScanOff; |
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545 iTimerServices.StopTimer( iIntervalChangeRequestId ); |
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546 iIntervalChangeRequestId = 0; |
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547 SetInterval( KWlanBgScanIntervalNever ); |
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548 } |
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549 |
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550 // --------------------------------------------------------------------------- |
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551 // CWlanBgScanStates::StateChangeAutoToAuto |
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552 // --------------------------------------------------------------------------- |
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553 // |
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554 void CWlanBgScanStates::StateChangeAutoToAuto( TWlanBgScanState& aState ) |
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555 { |
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556 aState = EBgScanAuto; |
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557 iBgScan.ScheduleAutoIntervalChange(); |
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558 SetInterval( iBgScan.CurrentAutoInterval() ); |
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559 } |
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560 |
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561 // --------------------------------------------------------------------------- |
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562 // CWlanBgScanStates::StateChangeAutoToOn |
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563 // --------------------------------------------------------------------------- |
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564 // |
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565 void CWlanBgScanStates::StateChangeAutoToOn( TWlanBgScanState& aState, TUint32 aNewBgScanSetting ) |
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566 { |
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567 aState = EBgScanOn; |
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568 iTimerServices.StopTimer( iIntervalChangeRequestId ); |
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569 iIntervalChangeRequestId = 0; |
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570 SetInterval( aNewBgScanSetting ); |
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571 } |
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572 |
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573 // --------------------------------------------------------------------------- |
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574 // CWlanBgScanStates::InStateAutoAws |
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575 // --------------------------------------------------------------------------- |
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576 // |
|
577 void CWlanBgScanStates::InStateAutoAws( TWlanBgScanState& aState, const CWlanBgScanStates::TWlanBgScanSmEvent& aEvent ) |
|
578 { |
|
579 switch( aEvent ) |
|
580 { |
|
581 case CWlanBgScanStates::EBgScanEventIntervalChanged: |
|
582 { |
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583 DEBUG( "CWlanBgScanStates::InStateAutoAws() - event: EBgScanEventIntervalChanged" ); |
|
584 switch( iBgScanSettings.backgroundScanInterval ) |
|
585 { |
|
586 case KWlanBgScanIntervalNever: |
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587 { |
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588 DEBUG( "CWlanBgScanStates::InStateAutoAws() - state change AutoAws to Off" ); |
|
589 StateChangeAutoAwsToOff( aState ); |
|
590 break; |
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591 } |
|
592 case KWlanBgScanIntervalAutomatic: |
|
593 { |
|
594 DEBUG( "CWlanBgScanStates::InStateAutoAws() - no change in the interval" ); |
|
595 aState = EBgScanAutoAws; |
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596 break; |
|
597 } |
|
598 default: |
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599 { |
|
600 DEBUG( "CWlanBgScanStates::InStateAutoAws() - state change AutoAws to On" ); |
|
601 StateChangeAutoAwsToOn( aState ); |
|
602 } |
|
603 } |
|
604 break; |
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605 } |
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606 case CWlanBgScanStates::EBgScanEventAwsIntervalChanged: |
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607 { |
|
608 DEBUG( "CWlanBgScanStates::InStateAutoAws() - event: EBgScanEventAwsIntervalChanged" ); |
|
609 SetInterval( AutoInterval() ); |
|
610 break; |
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611 } |
|
612 default: |
|
613 { |
|
614 DEBUG1( "CWlanBgScanStates::InStateAutoAws() - event %d ignored", aEvent ); |
|
615 } |
|
616 } |
|
617 } |
|
618 |
|
619 // --------------------------------------------------------------------------- |
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620 // CWlanBgScanStates::StateChangeAutoAwsToOff |
|
621 // --------------------------------------------------------------------------- |
|
622 // |
|
623 void CWlanBgScanStates::StateChangeAutoAwsToOff( TWlanBgScanState& aState ) |
|
624 { |
|
625 aState = EBgScanSendingAwsCmd; |
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626 iNextState = EBgScanOff; |
|
627 DEBUG( "CWlanBgScanStates::StateChangeAutoAwsToOff() - calling SendOrQueueAwsCommand()" ); |
|
628 MWlanBgScanAwsComms::TAwsMessage msg = { MWlanBgScanAwsComms::EStop, 0 }; |
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629 iBgScan.AwsCommand( msg ); |
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630 DEBUG( "CWlanBgScanStates::StateChangeAutoAwsToOff() - SendOrQueueAwsCommand() returned" ); |
|
631 iProvider.CancelScan(); |
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632 } |
|
633 |
|
634 // --------------------------------------------------------------------------- |
|
635 // CWlanBgScanStates::StateChangeAutoAwsToOn |
|
636 // --------------------------------------------------------------------------- |
|
637 // |
|
638 void CWlanBgScanStates::StateChangeAutoAwsToOn( TWlanBgScanState& aState ) |
|
639 { |
|
640 aState = EBgScanSendingAwsCmd; |
|
641 iNextState = EBgScanOn; |
|
642 DEBUG( "CWlanBgScanStates::StateChangeAutoAwsToOn() - calling SendAwsCommand()" ); |
|
643 MWlanBgScanAwsComms::TAwsMessage msg = { MWlanBgScanAwsComms::EStop, 0 }; |
|
644 iBgScan.AwsCommand( msg ); |
|
645 DEBUG( "CWlanBgScanStates::StateChangeAutoAwsToOn() - SendAwsCommand() returned" ); |
|
646 } |
|
647 |
|
648 // --------------------------------------------------------------------------- |
|
649 // CWlanBgScanStates::InStateSendingAwsCmd |
|
650 // --------------------------------------------------------------------------- |
|
651 // |
|
652 void CWlanBgScanStates::InStateSendingAwsCmd( TWlanBgScanState& aState, const CWlanBgScanStates::TWlanBgScanSmEvent& aEvent ) |
|
653 { |
|
654 DEBUG1( "CWlanBgScanStates::InStateSendingAwsCmd() - event: %d", aEvent ); |
|
655 |
|
656 switch( aEvent ) |
|
657 { |
|
658 case CWlanBgScanStates::EBgScanEventAwsCmdComplete: |
|
659 { |
|
660 DEBUG( "CWlanBgScanStates::InStateSendingAwsCmd() - event: EBgScanEventAwsCmdComplete" ); |
|
661 switch( AwsCmdStatus() ) |
|
662 { |
|
663 case KErrNone: |
|
664 { |
|
665 DEBUG( "CWlanBgScanStates::InStateSendingAwsCmd() - AWS command sending successful" ); |
|
666 switch ( iNextState ) |
|
667 { |
|
668 case EBgScanOff: |
|
669 { |
|
670 ASSERT( AwsCmd() == MWlanBgScanAwsComms::EStop ); |
|
671 DEBUG( "CWlanBgScanStates::InStateSendingAwsCmd() - state change SendingAwsCmd to Off" ); |
|
672 StateChangeSendingAwsCmdToOff( aState ); |
|
673 break; |
|
674 } |
|
675 case EBgScanOn: |
|
676 { |
|
677 ASSERT( AwsCmd() == MWlanBgScanAwsComms::EStop ); |
|
678 DEBUG( "CWlanBgScanStates::InStateSendingAwsCmd() - state change SendingAwsCmd to On" ); |
|
679 StateChangeSendingAwsCmdToOn( aState ); |
|
680 break; |
|
681 } |
|
682 case EBgScanAutoAws: |
|
683 { |
|
684 ASSERT( AwsCmd() == MWlanBgScanAwsComms::EStart ); |
|
685 DEBUG( "CWlanBgScanStates::InStateSendingAwsCmd() - state change SendingAwsCmd to AutoAws" ); |
|
686 StateChangeSendingAwsCmdToAutoAws( aState ); |
|
687 break; |
|
688 } |
|
689 default: |
|
690 { |
|
691 DEBUG1( "CWlanBgScanStates::InStateSendingAwsCmd() - illegal state change from SendingAwsCmd to %u", iNextState ); |
|
692 ASSERT( 0 ); |
|
693 } |
|
694 } |
|
695 break; |
|
696 } |
|
697 default: |
|
698 { |
|
699 DEBUG2( "CWlanBgScanStates::InStateSendingAwsCmd() - AWS command %d sending failed! Status %d", AwsCmd(), AwsCmdStatus() ); |
|
700 switch ( iNextState ) |
|
701 { |
|
702 case EBgScanOff: |
|
703 { |
|
704 DEBUG( "CWlanBgScanStates::InStateSendingAwsCmd() - state change SendingAwsCmd to Off" ); |
|
705 StateChangeSendingAwsCmdToOff( aState ); |
|
706 break; |
|
707 } |
|
708 case EBgScanOn: |
|
709 { |
|
710 DEBUG( "CWlanBgScanStates::InStateSendingAwsCmd() - state change SendingAwsCmd to On" ); |
|
711 StateChangeSendingAwsCmdToOn( aState ); |
|
712 break; |
|
713 } |
|
714 case EBgScanAutoAws: |
|
715 { |
|
716 DEBUG( "CWlanBgScanStates::InStateSendingAwsCmd() - state change SendingAwsCmd to Auto" ); |
|
717 StateChangeSendingAwsCmdToAuto( aState ); |
|
718 break; |
|
719 } |
|
720 default: |
|
721 { |
|
722 DEBUG1( "CWlanBgScanStates::InStateSendingAwsCmd() - illegal state change from SendingAwsCmd to %u", iNextState ); |
|
723 ASSERT( 0 ); |
|
724 } |
|
725 } |
|
726 break; |
|
727 } |
|
728 } |
|
729 break; |
|
730 } |
|
731 default: |
|
732 { |
|
733 DEBUG1( "CWlanBgScanStates::InStateSendingAwsCmd() - event %d ignored", aEvent ); |
|
734 } |
|
735 } |
|
736 } |
|
737 |
|
738 // --------------------------------------------------------------------------- |
|
739 // CWlanBgScanStates::StateChangeInitToAutoAws |
|
740 // --------------------------------------------------------------------------- |
|
741 // |
|
742 void CWlanBgScanStates::StateChangeInitToAutoAws( TWlanBgScanState& aState ) |
|
743 { |
|
744 if ( iBgScan.AwsPresence() == CWlanBgScan::EAwsPresent ) |
|
745 { |
|
746 DEBUG( "CWlanBgScanStates::StateChangeInitToAutoAws() - state change Init to SendingAwsCmd" ); |
|
747 aState = EBgScanSendingAwsCmd; |
|
748 DEBUG( "CWlanBgScanStates::StateChangeInitToAutoAws() - if command sending succeeds, next state is AutoAws" ); |
|
749 iNextState = EBgScanAutoAws; |
|
750 MWlanBgScanAwsComms::TAwsMessage msg = { MWlanBgScanAwsComms::EStart, 0 }; |
|
751 iBgScan.AwsCommand( msg ); |
|
752 DEBUG( "CWlanBgScanStates::StateChangeInitToAutoAws() - SendOrQueueAwsCommand() returned" ); |
|
753 } |
|
754 else |
|
755 { |
|
756 DEBUG( "CWlanBgScanStates::StateChangeInitToAutoAws() - error: AWS not present!" ); |
|
757 ASSERT( 0 ); |
|
758 DEBUG( "CWlanBgScanStates::StateChangeInitToAutoAws() - state change Init to Auto" ); |
|
759 aState = EBgScanAuto; |
|
760 DEBUG( "CWlanBgScanStates::StateChangeInitToAutoAws() - * determine next interval change time and request callback" ); |
|
761 iBgScan.ScheduleAutoIntervalChange(); |
|
762 SetInterval( iBgScan.CurrentAutoInterval() ); |
|
763 } |
|
764 } |
|
765 |
|
766 // --------------------------------------------------------------------------- |
|
767 // CWlanBgScanStates::StateChangeSendingAwsCmdToOff |
|
768 // --------------------------------------------------------------------------- |
|
769 // |
|
770 void CWlanBgScanStates::StateChangeSendingAwsCmdToOff( TWlanBgScanState& aState ) |
|
771 { |
|
772 DEBUG( "CWlanBgScanStates::StateChangeSendingAwsCmdToOff()" ); |
|
773 aState = EBgScanOff; |
|
774 SetInterval( KWlanBgScanIntervalNever ); |
|
775 } |
|
776 |
|
777 // --------------------------------------------------------------------------- |
|
778 // CWlanBgScanStates::StateChangeSendingAwsCmdToOn |
|
779 // --------------------------------------------------------------------------- |
|
780 // |
|
781 void CWlanBgScanStates::StateChangeSendingAwsCmdToOn( TWlanBgScanState& aState ) |
|
782 { |
|
783 DEBUG( "CWlanBgScanStates::StateChangeSendingAwsCmdToOn()" ); |
|
784 aState = EBgScanOn; |
|
785 SetInterval( iBgScanSettings.backgroundScanInterval ); |
|
786 } |
|
787 |
|
788 // --------------------------------------------------------------------------- |
|
789 // CWlanBgScanStates::StateChangeSendingAwsCmdToAuto |
|
790 // --------------------------------------------------------------------------- |
|
791 // |
|
792 void CWlanBgScanStates::StateChangeSendingAwsCmdToAuto( TWlanBgScanState& aState ) |
|
793 { |
|
794 DEBUG( "CWlanBgScanStates::StateChangeSendingAwsCmdToAuto()" ); |
|
795 aState = EBgScanAuto; |
|
796 DEBUG( "CWlanBgScanStates::StateChangeSendingAwsCmdToAuto() - * determine next interval change time and request callback" ); |
|
797 iBgScan.ScheduleAutoIntervalChange(); |
|
798 SetInterval( iBgScan.CurrentAutoInterval() ); |
|
799 } |
|
800 |
|
801 // --------------------------------------------------------------------------- |
|
802 // CWlanBgScanStates::StateChangeSendingAwsCmdToAutoAws |
|
803 // --------------------------------------------------------------------------- |
|
804 // |
|
805 void CWlanBgScanStates::StateChangeSendingAwsCmdToAutoAws( TWlanBgScanState& aState ) |
|
806 { |
|
807 DEBUG( "CWlanBgScanStates::StateChangeSendingAwsCmdToAutoAws()" ); |
|
808 aState = EBgScanAutoAws; |
|
809 SetInterval( AutoInterval() ); |
|
810 } |
|
811 |
|
812 // --------------------------------------------------------------------------- |
|
813 // CWlanBgScanStates::SetInterval |
|
814 // --------------------------------------------------------------------------- |
|
815 // |
|
816 void CWlanBgScanStates::SetInterval( TUint32 aInterval ) |
|
817 { |
|
818 DEBUG2( "CWlanBgScanStates::SetInterval() - current: %u, new: %u", iBgScanInterval, aInterval ); |
|
819 |
|
820 if( aInterval == KWlanBgScanIntervalNever ) |
|
821 { |
|
822 iBgScanInterval = KWlanNoScanning; |
|
823 } |
|
824 else |
|
825 { |
|
826 iBgScanInterval = aInterval; |
|
827 } |
|
828 |
|
829 RefreshUsedInterval(); |
|
830 } |
|
831 |
|
832 // --------------------------------------------------------------------------- |
|
833 // CWlanBgScanStates::RefreshUsedInterval |
|
834 // --------------------------------------------------------------------------- |
|
835 // |
|
836 void CWlanBgScanStates::RefreshUsedInterval() |
|
837 { |
|
838 TUint oldInterval = iUsedBgScanInterval; |
|
839 |
|
840 DEBUG2( "CWlanBgScanStates::RefreshUsedInterval() - agg: %u, normal: %u", |
|
841 iAggressiveBgScanInterval, iBgScanInterval ); |
|
842 |
|
843 // Smaller of the two intervals will be taken into use |
|
844 if( iAggressiveBgScanInterval < iBgScanInterval ) |
|
845 { |
|
846 iUsedBgScanInterval = iAggressiveBgScanInterval; |
|
847 } |
|
848 else |
|
849 { |
|
850 iUsedBgScanInterval = iBgScanInterval; |
|
851 } |
|
852 |
|
853 // If the interval changed, update it to P&S |
|
854 if( iUsedBgScanInterval != oldInterval ) |
|
855 { |
|
856 DEBUG2( "CWlanBgScanStates::RefreshUsedInterval() - used interval changed (new: %u, old: %u), publish it via P&S", |
|
857 iUsedBgScanInterval, oldInterval ); |
|
858 TUint32 interval = GetBgInterval(); |
|
859 iProvider.PublishBgScanInterval( interval ); |
|
860 } |
|
861 |
|
862 // Check if scanning has to be cancelled or carried out immediately |
|
863 if( KWlanNoScanning == iUsedBgScanInterval ) |
|
864 { |
|
865 DEBUG( "CWlanBgScanStates::RefreshUsedInterval() - scanning disabled, cancel pending scan" ); |
|
866 // In case scanning was disabled, cancel the pending scan request |
|
867 iProvider.CancelScan(); |
|
868 } |
|
869 else if( iUsedBgScanInterval < oldInterval ) |
|
870 { |
|
871 DEBUG( "CWlanBgScanStates::RefreshUsedInterval() - new interval smaller than the old one, scan immediately" ); |
|
872 // In case the new interval is smaller than the old one, scan |
|
873 // immediately |
|
874 iProvider.CancelScan(); |
|
875 iProvider.Scan( KWlanBgScanMaxDelayExpireImmediately ); |
|
876 } |
|
877 // else |
|
878 // In case the new interval is bigger than the old one, it |
|
879 // is taken into use after the pending scan request completes. |
|
880 } |
|
881 |
|
882 |
|
883 |