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1 /* |
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2 * Copyright (c) 2006-2010 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: Statemachine for deleting a traffic stream. |
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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: 8 % |
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20 */ |
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21 |
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22 #include "core_operation_delete_ts.h" |
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23 #include "core_traffic_stream.h" |
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24 #include "core_frame_wmm_ie_tspec.h" |
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25 #include "core_frame_action_wmm.h" |
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26 #include "core_server.h" |
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27 #include "core_tools.h" |
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28 #include "core_traffic_stream_list_iter.h" |
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29 #include "core_virtual_traffic_stream_list_iter.h" |
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30 #include "am_debug.h" |
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31 |
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32 // ======== MEMBER FUNCTIONS ======== |
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33 |
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34 // --------------------------------------------------------------------------- |
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35 // --------------------------------------------------------------------------- |
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36 // |
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37 core_operation_delete_ts_c::core_operation_delete_ts_c( |
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38 u32_t request_id, |
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39 core_server_c* server, |
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40 abs_core_driverif_c* drivers, |
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41 abs_core_server_callback_c* adaptation, |
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42 u32_t stream_id ) : |
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43 core_operation_base_c( core_operation_delete_ts, request_id, server, drivers, adaptation, |
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44 core_base_flag_none ), |
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45 id_m( stream_id ) |
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46 { |
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47 DEBUG( "core_operation_delete_ts_c::core_operation_delete_ts_c()" ); |
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48 } |
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49 |
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50 // --------------------------------------------------------------------------- |
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51 // --------------------------------------------------------------------------- |
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52 // |
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53 core_operation_delete_ts_c::~core_operation_delete_ts_c() |
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54 { |
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55 DEBUG( "core_operation_delete_ts_c::~core_operation_delete_ts_c()" ); |
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56 } |
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57 |
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58 // --------------------------------------------------------------------------- |
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59 // --------------------------------------------------------------------------- |
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60 // |
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61 core_error_e core_operation_delete_ts_c::next_state() |
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62 { |
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63 DEBUG( "core_operation_delete_ts_c::next_state()" ); |
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64 |
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65 switch ( operation_state_m ) |
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66 { |
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67 case core_state_init: |
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68 { |
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69 operation_state_m = core_base_state_parameters_set; |
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70 |
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71 if( !server_m->get_core_settings().is_connected() ) |
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72 { |
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73 DEBUG( "core_operation_delete_ts_c::next_state() - not connected, nothing to do" ); |
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74 |
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75 return core_error_general; |
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76 } |
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77 |
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78 core_traffic_stream_list_c& ts_list( |
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79 server_m->get_connection_data()->traffic_stream_list() ); |
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80 core_virtual_traffic_stream_list_c& virtual_ts_list( |
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81 server_m->get_connection_data()->virtual_traffic_stream_list() ); |
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82 core_traffic_stream_list_iter_c ts_iter( ts_list ); |
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83 core_virtual_traffic_stream_list_iter_c virtual_ts_iter( virtual_ts_list ); |
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84 |
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85 DEBUG( "core_operation_delete_ts_c::next_state() - current traffic streams:" ); |
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86 virtual_ts_list.print_contents(); |
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87 ts_list.print_contents(); |
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88 |
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89 /** |
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90 * Find the virtual traffic stream to be deleted. |
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91 */ |
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92 core_virtual_traffic_stream_c* virtual_stream = NULL; |
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93 core_virtual_traffic_stream_c* virtual_iter = virtual_ts_iter.first(); |
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94 while( virtual_iter ) |
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95 { |
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96 if( virtual_iter->id() == id_m ) |
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97 { |
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98 virtual_stream = virtual_iter; |
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99 virtual_iter = NULL; |
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100 } |
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101 else |
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102 { |
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103 virtual_iter = virtual_ts_iter.next(); |
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104 } |
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105 } |
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106 |
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107 if( !virtual_stream ) |
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108 { |
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109 DEBUG1( "core_operation_delete_ts_c::next_state() - no virtual traffic stream with ID %u found", |
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110 id_m ); |
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111 |
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112 return core_error_not_found; |
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113 } |
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114 |
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115 u8_t tid = virtual_stream->tid(); |
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116 |
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117 DEBUG3( "core_operation_delete_ts_c::next_state() - virtual traffic stream with ID %u found, TID: %u, UP: %u", |
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118 id_m, tid, virtual_stream->user_priority() ); |
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119 |
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120 /** |
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121 * Delete the virtual traffic stream. |
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122 */ |
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123 virtual_ts_iter.remove(); |
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124 |
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125 /** |
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126 * Locate the actual traffic stream based on the TID. |
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127 */ |
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128 core_traffic_stream_c* stream = NULL; |
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129 core_traffic_stream_c* iter = ts_iter.first(); |
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130 while( iter ) |
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131 { |
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132 if( iter->tid() == tid ) |
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133 { |
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134 stream = iter; |
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135 |
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136 iter = NULL; |
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137 } |
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138 else |
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139 { |
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140 iter = ts_iter.next(); |
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141 } |
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142 } |
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143 |
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144 if( !stream ) |
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145 { |
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146 DEBUG1( "core_operation_delete_ts_c::next_state() - no traffic stream with TID %u found", |
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147 id_m ); |
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148 |
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149 /** |
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150 * This is not an error since the virtual traffic streams can |
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151 * exist eventhough the AP doesn't require admission control. |
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152 */ |
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153 |
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154 return core_error_ok; |
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155 } |
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156 |
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157 stream->dec_reference_count(); |
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158 if( stream->reference_count() ) |
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159 { |
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160 DEBUG1( "core_operation_delete_ts_c::next_state() - traffic stream reference count is %u, not deleting", |
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161 stream->reference_count() ); |
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162 |
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163 /** |
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164 * If there are still other virtual traffic streams referencing |
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165 * this traffic stream, do not delete it. |
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166 */ |
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167 |
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168 return core_error_ok; |
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169 } |
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170 |
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171 u8_t user_priority = stream->user_priority(); |
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172 core_traffic_stream_direction_e direction = stream->direction(); |
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173 bool_t is_uapsd( true_t ); |
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174 if( !server_m->get_connection_data()->current_ap_data()->is_uapsd_supported() || |
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175 !server_m->get_core_settings().is_uapsd_enable_for_access_class( |
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176 core_tools_c::convert_user_priority_to_ac( user_priority ) ) ) |
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177 { |
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178 is_uapsd = false_t; |
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179 } |
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180 DEBUG1( "core_operation_delete_ts_c::next_state() - U-APSD %u", |
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181 is_uapsd ); |
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182 |
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183 core_frame_wmm_ie_tspec_c* tspec_ie = core_frame_wmm_ie_tspec_c::instance( |
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184 stream->tid(), |
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185 user_priority, |
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186 is_uapsd, |
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187 stream->is_periodic_traffic(), |
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188 stream->direction(), |
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189 stream->nominal_msdu_size(), |
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190 stream->maximum_msdu_size(), |
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191 stream->minimum_service_interval(), |
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192 stream->maximum_service_interval(), |
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193 stream->inactivity_interval(), |
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194 stream->suspension_interval(), |
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195 stream->service_start_time(), |
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196 stream->minimum_data_rate(), |
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197 stream->mean_data_rate(), |
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198 stream->peak_data_rate(), |
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199 stream->maximum_burst_size(), |
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200 stream->delay_bound(), |
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201 stream->minimum_phy_rate(), |
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202 stream->surplus_bandwidth_allowance(), |
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203 stream->medium_time() ); |
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204 if( !tspec_ie ) |
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205 { |
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206 DEBUG( "core_operation_delete_ts_c::next_state() - unable to allocate a WMM TSPEC IE" ); |
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207 return core_error_no_memory; |
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208 } |
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209 |
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210 DEBUG( "core_operation_delete_ts_c::next_state() - TSPEC IE:" ); |
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211 DEBUG_BUFFER( tspec_ie->data_length(), tspec_ie->data() ); |
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212 |
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213 const core_mac_address_s dest( |
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214 server_m->get_connection_data()->current_ap_data()->bssid() ); |
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215 const core_mac_address_s src( |
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216 server_m->own_mac_addr() ); |
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217 |
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218 core_frame_action_wmm_c* frame = core_frame_action_wmm_c::instance( |
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219 0, // Duration |
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220 dest, // Destination |
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221 src, // Source |
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222 dest, // BSSID |
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223 0, // Sequence Control |
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224 core_frame_action_wmm_c::core_dot11_action_wmm_type_delts, // Action Type |
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225 0, // Dialog Token |
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226 core_frame_action_wmm_c::core_dot11_action_wmm_status_admission_accepted, // Status Code |
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227 tspec_ie ); |
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228 |
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229 delete tspec_ie; |
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230 tspec_ie = NULL; |
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231 |
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232 if( !frame ) |
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233 { |
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234 DEBUG( "core_operation_delete_ts_c::next_state() - unable to allocate an action frame" ); |
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235 return core_error_no_memory; |
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236 } |
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237 |
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238 DEBUG( "core_operation_delete_ts_c::next_state() - DELTS REQ:" ); |
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239 DEBUG_BUFFER( frame->data_length(), frame->data() ); |
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240 |
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241 server_m->send_management_frame( |
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242 core_frame_type_dot11, |
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243 frame->data_length(), |
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244 frame->data(), |
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245 dest ); |
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246 |
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247 delete frame; |
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248 frame = NULL; |
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249 |
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250 DEBUG( "core_operation_delete_ts_c::next_state() - DELTS request sent" ); |
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251 |
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252 server_m->get_wpx_adaptation_instance().handle_ts_delete( |
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253 tid, user_priority ); |
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254 |
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255 /** |
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256 * If there no more manual virtual traffic streams in this AC, |
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257 * switch the traffic mode back to automatic. |
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258 */ |
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259 if( virtual_ts_list.traffic_mode_by_ac( stream->access_class() ) == core_access_class_traffic_mode_automatic ) |
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260 { |
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261 server_m->get_connection_data()->set_ac_traffic_mode( |
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262 stream->access_class(), |
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263 core_access_class_traffic_mode_automatic ); |
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264 |
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265 DEBUG( "core_operation_delete_ts_c::next_state() - traffic mode set to automatic for this AC, notifying clients" ); |
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266 |
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267 u8_t buf[5]; |
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268 buf[0] = static_cast<u8_t>( |
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269 stream->access_class() ); |
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270 buf[1] = static_cast<u8_t>( |
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271 core_access_class_traffic_mode_automatic ); |
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272 adaptation_m->notify( |
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273 core_notification_ac_traffic_mode_changed, |
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274 sizeof( buf ), |
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275 buf ); |
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276 } |
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277 |
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278 /** |
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279 * Delete the actual traffic stream. |
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280 */ |
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281 ts_iter.remove(); |
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282 |
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283 if( direction == core_traffic_stream_direction_uplink || |
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284 direction == core_traffic_stream_direction_bidirectional ) |
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285 { |
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286 server_m->get_connection_data()->set_ac_traffic_status( |
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287 core_tools_c::convert_user_priority_to_ac( user_priority ), |
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288 core_access_class_traffic_status_not_admitted ); |
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289 |
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290 /** |
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291 * Send an indication to notify clients that this access class |
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292 * is no longer admitted. |
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293 * |
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294 * We don't have to the check the ACM bits since the traffic |
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295 * stream wouldn't exist if the AP didn't require admission |
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296 * control. |
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297 */ |
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298 DEBUG( "core_operation_delete_ts_c::next_state() - traffic no longer admitted on this AC, notifying clients" ); |
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299 |
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300 u8_t buf[5]; |
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301 buf[0] = static_cast<u8_t>( |
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302 core_tools_c::convert_user_priority_to_ac( user_priority ) ); |
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303 buf[1] = static_cast<u8_t>( |
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304 core_access_class_traffic_status_not_admitted ); |
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305 adaptation_m->notify( |
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306 core_notification_ac_traffic_status_changed, |
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307 sizeof( buf ), |
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308 buf ); |
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309 |
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310 /** |
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311 * Reset TX queue parameters back to default values. |
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312 */ |
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313 DEBUG( "core_operation_delete_ts_c::next_state() - resetting tx queue parameters" ); |
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314 |
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315 drivers_m->set_tx_queue_parameters( |
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316 request_id_m, |
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317 core_tools_c::convert_user_priority_to_ac( user_priority ), |
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318 0, |
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319 server_m->get_device_settings().max_tx_msdu_life_time ); |
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320 } |
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321 else |
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322 { |
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323 /** |
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324 * Since TX queue parameters apply only to uplink, there is nothing |
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325 * more to do on downlink streams. |
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326 */ |
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327 return core_error_ok; |
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328 } |
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329 |
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330 break; |
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331 } |
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332 case core_base_state_parameters_set: |
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333 { |
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334 DEBUG( "core_operation_delete_ts_c::next_state() - tx queue parameters reset" ); |
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335 |
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336 return core_error_ok; |
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337 } |
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338 default: |
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339 { |
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340 ASSERT( false_t ); |
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341 } |
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342 } |
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343 |
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344 return core_error_request_pending; |
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345 } |