author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 15 Mar 2010 12:46:48 +0200 | |
branch | RCL_3 |
changeset 6 | e0f767079796 |
parent 0 | c40eb8fe8501 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Statemachine for doing scans when roaming |
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* |
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*/ |
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|
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/* |
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* %version: 22 % |
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*/ |
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|
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#include "core_sub_operation_roam_scan.h" |
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#include "core_frame_dot11.h" |
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#include "core_server.h" |
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#include "core_tools_parser.h" |
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#include "core_tools.h" |
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#include "am_debug.h" |
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|
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// ======== MEMBER FUNCTIONS ======== |
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|
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// --------------------------------------------------------------------------- |
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// --------------------------------------------------------------------------- |
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// |
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core_sub_operation_roam_scan_c::core_sub_operation_roam_scan_c( |
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u32_t request_id, |
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core_server_c* server, |
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abs_core_driverif_c* drivers, |
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abs_core_server_callback_c* adaptation, |
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const core_ssid_s& scan_ssid, |
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const core_scan_channels_s& scan_channels, |
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bool_t is_connected, |
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bool_t is_first_match_selected ) : |
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core_operation_base_c( core_operation_scan, request_id, server, drivers, adaptation, |
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core_base_flag_drivers_needed ), |
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scan_ssid_m( scan_ssid ), |
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scan_channels_m( scan_channels ), |
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is_connected_m( is_connected ), |
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is_first_match_selected( is_first_match_selected ) |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::core_sub_operation_roam_scan_c()" ); |
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} |
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// --------------------------------------------------------------------------- |
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// --------------------------------------------------------------------------- |
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// |
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core_sub_operation_roam_scan_c::~core_sub_operation_roam_scan_c() |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::~core_sub_operation_roam_scan_c()" ); |
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server_m->unregister_event_handler( this ); |
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server_m->unregister_frame_handler( this ); |
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} |
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// --------------------------------------------------------------------------- |
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// --------------------------------------------------------------------------- |
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// |
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core_error_e core_sub_operation_roam_scan_c::next_state() |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::next_state()" ); |
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switch ( operation_state_m ) |
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{ |
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case core_state_init: |
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{ |
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operation_state_m = core_state_scan_start; |
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if ( scan_ssid_m.length ) |
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{ |
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DEBUG1S( "core_sub_operation_roam_scan_c::next_state() - requesting a direct scan with SSID ", |
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scan_ssid_m.length, &scan_ssid_m.ssid[0] ); |
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} |
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else |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::next_state() - requesting a broadcast scan" ); |
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} |
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|
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if ( is_connected_m ) |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::next_state() - requesting a split-scan" ); |
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} |
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else |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::next_state() - requesting a regular scan" ); |
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} |
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DEBUG2( "core_sub_operation_roam_scan_c::next_state() - requesting scan on channels 0x%02X%02X", |
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scan_channels_m.channels2dot4ghz[1], |
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scan_channels_m.channels2dot4ghz[0] ); |
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server_m->get_scan_list().remove_entries_by_age( |
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server_m->get_device_settings().scan_list_expiration_time ); |
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103 |
server_m->register_event_handler( this ); |
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|
104 |
server_m->register_frame_handler( this ); |
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|
105 |
|
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|
106 |
drivers_m->scan( |
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|
107 |
request_id_m, |
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|
108 |
core_scan_mode_active, |
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|
109 |
scan_ssid_m, |
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|
110 |
server_m->get_device_settings().scan_rate, |
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|
111 |
server_m->get_core_settings().valid_scan_channels( scan_channels_m ), |
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|
112 |
server_m->get_device_settings().active_scan_min_ch_time, |
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113 |
server_m->get_device_settings().active_scan_max_ch_time, |
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|
114 |
is_connected_m ); |
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|
115 |
|
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116 |
break; |
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117 |
} |
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118 |
case core_state_scan_start: |
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119 |
{ |
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120 |
operation_state_m = core_state_scan_started; |
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121 |
|
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122 |
DEBUG( "core_sub_operation_roam_scan_c::next_state() - scan start completed, waiting for scan completion" ); |
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123 |
|
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124 |
break; |
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125 |
} |
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126 |
case core_state_scan_stop: |
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127 |
{ |
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128 |
operation_state_m = core_state_scan_stopped; |
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129 |
|
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130 |
DEBUG( "core_sub_operation_roam_scan_c::next_state() - scan stop completed, waiting for scan completion" ); |
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131 |
|
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132 |
break; |
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133 |
} |
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134 |
case core_state_scan_stopped: |
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135 |
{ |
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|
136 |
DEBUG( "core_sub_operation_roam_scan_c::next_state() - invalid state transition in core_state_scan_stopped" ); |
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|
137 |
ASSERT( false_t ); |
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138 |
} |
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139 |
case core_state_scan_complete: |
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140 |
{ |
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|
141 |
server_m->unregister_frame_handler( this ); |
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|
142 |
|
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143 |
return core_error_ok; |
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144 |
} |
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145 |
default: |
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146 |
{ |
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147 |
ASSERT( false_t ); |
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148 |
} |
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149 |
} |
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150 |
|
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151 |
return core_error_request_pending; |
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152 |
} |
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|
153 |
|
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154 |
// --------------------------------------------------------------------------- |
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155 |
// --------------------------------------------------------------------------- |
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156 |
// |
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157 |
void core_sub_operation_roam_scan_c::user_cancel( |
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158 |
bool_t do_graceful_cancel ) |
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159 |
{ |
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|
160 |
DEBUG( "core_sub_operation_roam_scan_c::user_cancel()" ); |
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|
161 |
|
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162 |
if ( !do_graceful_cancel ) |
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163 |
{ |
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164 |
/** |
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165 |
* If we are in a middle of a scan, we have to schedule our own |
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166 |
* event. |
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167 |
*/ |
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|
168 |
if ( operation_state_m == core_state_scan_started ) |
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|
169 |
{ |
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|
170 |
asynch_default_user_cancel(); |
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|
171 |
|
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|
172 |
return; |
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173 |
} |
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|
174 |
|
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|
175 |
/** |
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|
176 |
* Everything else is handled by the default implementation. |
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|
177 |
*/ |
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|
178 |
core_operation_base_c::user_cancel( do_graceful_cancel ); |
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|
179 |
} |
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180 |
} |
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|
181 |
|
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|
182 |
// --------------------------------------------------------------------------- |
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|
183 |
// --------------------------------------------------------------------------- |
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184 |
// |
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|
185 |
bool_t core_sub_operation_roam_scan_c::receive_frame( |
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|
186 |
const core_frame_dot11_c* frame, |
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|
187 |
u8_t rcpi ) |
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|
188 |
{ |
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|
189 |
DEBUG( "core_sub_operation_roam_scan_c::receive_frame()" ); |
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|
190 |
|
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|
191 |
if ( frame->type() != core_frame_dot11_c::core_dot11_type_beacon && |
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|
192 |
frame->type() != core_frame_dot11_c::core_dot11_type_probe_resp ) |
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|
193 |
{ |
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|
194 |
DEBUG( "core_sub_operation_roam_scan_c::receive_frame() - not a beacon or a probe" ); |
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|
195 |
return false_t; |
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196 |
} |
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|
197 |
|
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|
198 |
core_ap_data_c* ap_data = core_ap_data_c::instance( |
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|
199 |
server_m->get_wpx_adaptation_instance(), |
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|
200 |
frame, |
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|
201 |
rcpi, |
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|
202 |
false_t ); |
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|
203 |
if ( ap_data ) |
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|
204 |
{ |
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|
205 |
const core_ssid_s ssid( |
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|
206 |
ap_data->ssid() ); |
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|
207 |
|
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|
208 |
#ifdef _DEBUG |
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209 |
DEBUG1S( "core_sub_operation_roam_scan_c::receive_frame() - SSID: ", |
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ssid.length, &ssid.ssid[0] ); |
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211 |
|
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const core_mac_address_s bssid( |
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ap_data->bssid() ); |
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DEBUG6( "core_sub_operation_roam_scan_c::receive_frame() - BSSID: %02X:%02X:%02X:%02X:%02X:%02X", |
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bssid.addr[0], bssid.addr[1], bssid.addr[2], |
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bssid.addr[3], bssid.addr[4], bssid.addr[5] ); |
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#endif // _DEBUG |
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|
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server_m->get_scan_list().update_entry( *ap_data ); |
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220 |
|
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/** |
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* The current implementation assumes that scan is only stopped |
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* in an emergency situation so there's no need to check for |
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* admission control parameters. |
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*/ |
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if ( operation_state_m == core_state_scan_started && |
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is_first_match_selected && |
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scan_ssid_m == ssid && |
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core_tools_parser_c::is_ap_suitable( |
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server_m->get_wpx_adaptation_instance(), |
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*ap_data, |
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server_m->get_connection_data()->iap_data(), |
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server_m->get_core_settings(), |
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*server_m->get_connection_data(), |
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server_m->get_device_settings().scan_stop_rcpi_threshold, |
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MEDIUM_TIME_NOT_DEFINED, |
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server_m->is_cm_active(), |
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ZERO_MAC_ADDR ) == core_connect_ok ) |
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239 |
{ |
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DEBUG( "core_sub_operation_roam_scan_c::receive_frame() - AP is suitable, requesting scan to be stopped" ); |
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241 |
|
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operation_state_m = core_state_scan_stop; |
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243 |
|
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drivers_m->stop_scan( |
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request_id_m ); |
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} |
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else if ( operation_state_m == core_state_scan_start ) |
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248 |
{ |
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DEBUG( "core_sub_operation_roam_scan_c::receive_frame() - scan frame received while starting scan" ); |
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} |
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else if ( operation_state_m == core_state_scan_stop ) |
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252 |
{ |
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DEBUG( "core_sub_operation_roam_scan_c::receive_frame() - scan frame received while stopping scan" ); |
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} |
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else if ( operation_state_m == core_state_scan_stopped ) |
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256 |
{ |
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DEBUG( "core_sub_operation_roam_scan_c::receive_frame() - scan frame after scan was stopped" ); |
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} |
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259 |
|
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delete ap_data; |
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ap_data = NULL; |
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} |
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263 |
|
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return true_t; |
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} |
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266 |
|
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// --------------------------------------------------------------------------- |
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// --------------------------------------------------------------------------- |
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// |
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bool_t core_sub_operation_roam_scan_c::notify( |
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core_am_indication_e indication ) |
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{ |
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if ( indication == core_am_indication_wlan_scan_complete ) |
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{ |
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server_m->unregister_event_handler( this ); |
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|
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if ( operation_state_m == core_state_scan_start ) |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::notify() - scan complete received while starting scan" ); |
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|
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/** |
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* No need to do anything here, state will be changed when the request completes. |
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*/ |
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operation_state_m = core_state_scan_complete; |
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} |
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else if ( operation_state_m == core_state_scan_started ) |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::notify() - scan complete" ); |
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289 |
|
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asynch_goto( core_state_scan_complete, CORE_TIMER_IMMEDIATELY ); |
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} |
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else if ( operation_state_m == core_state_scan_stop ) |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::notify() - scan complete received while stopping scan" ); |
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|
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/** |
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* No need to do anything here, state will be changed when the request completes. |
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*/ |
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operation_state_m = core_state_scan_complete; |
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} |
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else if ( operation_state_m == core_state_scan_stopped ) |
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{ |
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DEBUG( "core_sub_operation_roam_scan_c::notify() - scan complete after scan stop completed" ); |
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304 |
|
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asynch_goto( core_state_scan_complete, CORE_TIMER_IMMEDIATELY ); |
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} |
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else |
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308 |
{ |
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DEBUG( "core_sub_operation_roam_scan_c::notify() - scan complete in unknown state" ); |
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310 |
ASSERT( false_t ); |
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311 |
} |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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return true_t; |
c40eb8fe8501
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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} |
c40eb8fe8501
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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return false_t; |
c40eb8fe8501
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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} |