FreeCalypso > hg > fc-tourmaline
annotate src/g23m-gprs/llc/llc_uirxs.c @ 28:b5a5e3ea94ed
components: GPF library recipes preened
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 16 Oct 2020 18:00:44 +0000 |
parents | fa8dc04885d8 |
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rev | line source |
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1
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | Project : |
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4 | Modul : |
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5 +----------------------------------------------------------------------------- |
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6 | Copyright 2002 Texas Instruments Berlin, AG |
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7 | All rights reserved. |
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8 | |
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9 | This file is confidential and a trade secret of Texas |
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10 | Instruments Berlin, AG |
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11 | The receipt of or possession of this file does not convey |
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12 | any rights to reproduce or disclose its contents or to |
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13 | manufacture, use, or sell anything it may describe, in |
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14 | whole, or in part, without the specific written consent of |
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15 | Texas Instruments Berlin, AG. |
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16 +----------------------------------------------------------------------------- |
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17 | Purpose : This modul is part of the entity LLC and implements all |
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18 | functions to handles the incoming process internal signals as |
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19 | described in the SDL-documentation (UIRX-statemachine) |
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20 +----------------------------------------------------------------------------- |
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21 */ |
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22 |
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23 #ifndef LLC_UIRXS_C |
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24 #define LLC_UIRXS_C |
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25 #endif |
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26 |
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27 #define ENTITY_LLC |
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28 |
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29 /*==== INCLUDES =============================================================*/ |
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30 |
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31 #include "typedefs.h" /* to get Condat data types */ |
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32 #include "vsi.h" /* to get a lot of macros */ |
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33 #include "macdef.h" |
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34 #include "gprs.h" |
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35 #include "gsm.h" /* to get a lot of macros */ |
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36 #include "cnf_llc.h" /* to get cnf-definitions */ |
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37 #include "mon_llc.h" /* to get mon-definitions */ |
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38 #include "prim.h" /* to get the definitions of used SAP and directions */ |
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39 #include "llc.h" /* to get the global entity definitions */ |
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40 |
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41 #include "llc_uirxf.h" /* to get local UIRX functions */ |
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42 |
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43 /*==== CONST ================================================================*/ |
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44 |
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45 /*==== LOCAL VARS ===========================================================*/ |
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46 |
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47 /*==== PRIVATE FUNCTIONS ====================================================*/ |
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48 |
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49 /*==== PUBLIC FUNCTIONS =====================================================*/ |
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50 |
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51 |
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52 |
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53 /* |
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54 +------------------------------------------------------------------------------ |
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55 | Function : sig_llme_uirx_assign_req |
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56 +------------------------------------------------------------------------------ |
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57 | Description : Handles the internal signal SIG_LLME_UIRX_ASSIGN_REQ |
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58 | |
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59 | Parameters : |
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60 | |
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61 +------------------------------------------------------------------------------ |
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62 */ |
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63 #ifndef CF_FAST_EXEC |
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64 |
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65 GLOBAL void sig_llme_uirx_assign_req (void) |
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66 { |
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67 TRACE_ISIG( "sig_llme_uirx_assign_req" ); |
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68 |
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69 switch (GET_STATE(UIRX)) |
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70 { |
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71 case UIRX_TLLI_UNASSIGNED_NOT_READY: |
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72 SET_STATE (UIRX, UIRX_ADM_NOT_READY); |
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73 /* |
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74 * Initialise current incarnation. |
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75 */ |
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76 uirx_init_sapi(); |
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77 break; |
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78 case UIRX_TLLI_UNASSIGNED_READY: |
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79 SET_STATE (UIRX, UIRX_ADM_READY); |
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80 /* |
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81 * Initialise current incarnation. |
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82 */ |
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83 uirx_init_sapi(); |
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84 break; |
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85 default: |
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86 TRACE_ERROR( "SIG_LLME_UIRX_ASSIGN_REQ unexpected" ); |
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87 break; |
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88 } |
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89 } /* sig_llme_uirx_assign_req() */ |
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90 |
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91 #endif /* CF_FAST_EXEC */ |
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92 |
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93 /* |
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94 +------------------------------------------------------------------------------ |
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95 | Function : sig_llme_uirx_unassign_req |
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96 +------------------------------------------------------------------------------ |
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97 | Description : Handles the internal signal SIG_LLME_UIRX_UNASSIGN_REQ |
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98 | |
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99 | Parameters : |
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100 | |
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101 +------------------------------------------------------------------------------ |
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102 */ |
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103 #ifndef CF_FAST_EXEC |
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104 |
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105 GLOBAL void sig_llme_uirx_unassign_req (void) |
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106 { |
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107 TRACE_ISIG( "sig_llme_uirx_unassign_req" ); |
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108 |
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109 switch (GET_STATE(UIRX)) |
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110 { |
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111 case UIRX_ADM_NOT_READY: |
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112 SET_STATE (UIRX, UIRX_TLLI_UNASSIGNED_NOT_READY); |
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113 break; |
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114 case UIRX_ADM_READY: |
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115 SET_STATE (UIRX, UIRX_TLLI_UNASSIGNED_READY); |
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116 break; |
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117 default: |
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118 TRACE_ERROR( "SIG_LLME_UIRX_UNASSIGN_REQ unexpected" ); |
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119 break; |
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120 } |
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121 } /* sig_llme_uirx_unassign_req() */ |
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122 |
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123 #endif /* CF_FAST_EXEC */ |
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124 |
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125 |
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126 /* |
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127 +------------------------------------------------------------------------------ |
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128 | Function : sig_llme_uirx_reset_req |
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129 +------------------------------------------------------------------------------ |
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130 | Description : Handles the internal signal SIG_LLME_UIRX_RESET_REQ |
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131 | |
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132 | Parameters : |
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133 | |
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134 +------------------------------------------------------------------------------ |
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135 */ |
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136 #ifndef CF_FAST_EXEC |
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137 |
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138 GLOBAL void sig_llme_uirx_reset_req (void) |
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139 { |
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140 TRACE_ISIG( "sig_llme_uirx_reset_req" ); |
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141 |
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142 switch (GET_STATE(UIRX)) |
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143 { |
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144 case UIRX_TLLI_UNASSIGNED_NOT_READY: |
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145 /* |
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146 * No break! |
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147 */ |
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148 case UIRX_TLLI_UNASSIGNED_READY: |
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149 /* |
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150 * No break! |
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151 */ |
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152 case UIRX_ADM_NOT_READY: |
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153 /* |
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154 * No break! |
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155 */ |
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156 case UIRX_ADM_READY: |
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157 /* |
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158 * Only use this procedure as long as it initalises only the requested |
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159 * variables on reset (V(UR) as of V6.4.0). |
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160 */ |
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161 uirx_init_sapi(); |
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162 break; |
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163 default: |
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164 TRACE_ERROR( "SIG_LLME_UIRX_RESET_REQ unexpected" ); |
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165 break; |
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166 } |
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167 } /* sig_llme_uirx_reset_req() */ |
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168 |
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169 #endif /* CF_FAST_EXEC */ |
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170 |
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171 |
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172 |
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173 /* |
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174 +------------------------------------------------------------------------------ |
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175 | Function : sig_rx_uirx_data_ind |
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176 +------------------------------------------------------------------------------ |
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177 | Description : Handles the internal signal SIG_RX_UIRX_DATA_IND |
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178 | |
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179 | Parameters : ll_unitdata_ind - a valid pointer to an LL-UNITDATA-IND |
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180 | primitive |
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181 | nu - N(U) of the received UI frame |
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182 | |
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183 +------------------------------------------------------------------------------ |
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184 */ |
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185 /*#if defined(CF_FAST_EXEC) || defined(_SIMULATION_) || \ |
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186 !defined(REL99) || defined(LL_2to1) */ |
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187 |
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188 GLOBAL void sig_rx_uirx_data_ind (T_LL_UNITDATA_IND *ll_unitdata_ind, |
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189 T_FRAME_NUM nu) |
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190 { |
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191 USHORT diff; |
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192 |
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193 TRACE_ISIG( "sig_rx_uirx_data_ind" ); |
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194 |
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195 /* |
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196 * SAPI has already been checked by service RX. |
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197 */ |
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198 |
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199 switch (GET_STATE(UIRX)) |
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200 { |
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201 case UIRX_ADM_NOT_READY: |
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202 /* |
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203 * Calculate relative difference of V(UR) and N(U): add 512 to V(UR), |
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204 * subtract N(U), apply modulo 512 to get back into the valid range |
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205 */ |
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206 diff = (((llc_data->sapi->vur + |
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207 (MAX_SEQUENCE_NUMBER+1)) - nu) % (MAX_SEQUENCE_NUMBER+1)); |
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208 |
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209 /* |
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210 * Original formula: |
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211 * V(UR)-32 <= N(U) < V(UR) |
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212 * Translated: |
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213 * the relative difference must be maximally 32, and minimally 1 |
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214 */ |
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215 if ((diff > 0) AND (diff <= 32)) |
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216 { |
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217 /* |
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218 * We've got an retranmitted frame. Check if we got it already. |
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219 */ |
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220 if (uirx_check_nu (nu, llc_data->sapi->vur) == TRUE) |
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221 { |
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222 /* |
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223 * N(U) already received. Discard frame without any futher action. |
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224 */ |
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225 PFREE (ll_unitdata_ind); |
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226 TRACE_0_INFO("Duplicate frame number ignored"); |
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227 return; |
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228 } |
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229 } |
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230 else |
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231 { |
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232 /* |
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233 * We've got a new, not retransmitted, frame. Set V(UR) to the new value. |
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234 */ |
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235 uirx_set_new_vur ((T_FRAME_NUM)(nu + 1)); |
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236 } |
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237 |
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238 /* |
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239 * Store the N(U) of the frame to be already received. |
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240 */ |
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241 uirx_store_nu (nu, llc_data->sapi->vur); |
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parents:
diff
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242 |
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243 /* |
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244 * We are not ready to send data. Store frame in UIRX queue, |
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245 * if possible. |
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246 */ |
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247 uirx_queue_store (ll_unitdata_ind); |
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248 break; |
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249 |
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250 case UIRX_ADM_READY: |
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251 /* |
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252 * Calculate relative difference of V(UR) and N(U): add 512 to V(UR), |
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253 * subtract N(U), apply modulo 512 to get back into the valid range |
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254 */ |
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diff
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|
255 diff = (((llc_data->sapi->vur + |
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|
256 (MAX_SEQUENCE_NUMBER+1)) - nu) % (MAX_SEQUENCE_NUMBER+1)); |
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257 |
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258 /* |
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259 * Original formula: |
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260 * V(UR)-32 <= N(U) < V(UR) |
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261 * Translated: |
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262 * the relative difference must be maximally 32, and minimally 1 |
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263 */ |
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264 if ((diff > 0) AND (diff <= 32)) |
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265 { |
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|
266 /* |
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267 * We've got an retranmitted frame. Check if we got it already. |
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|
268 */ |
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269 if (uirx_check_nu (nu, llc_data->sapi->vur) == TRUE) |
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|
270 { |
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|
271 /* |
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272 * N(U) already received. Discard frame without any futher action. |
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273 */ |
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274 PFREE (ll_unitdata_ind); |
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275 TRACE_0_INFO("Duplicated frame number ignored"); |
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|
276 return; |
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|
277 } |
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|
278 } |
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|
279 else |
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diff
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|
280 { |
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diff
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|
281 /* |
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|
282 * We've got a new, not retransmitted, frame. Set V(UR) to the new value. |
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|
283 */ |
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|
284 uirx_set_new_vur ((T_FRAME_NUM)(nu + 1)); |
fa8dc04885d8
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parents:
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|
285 } |
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diff
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|
286 |
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|
287 /* |
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|
288 * Store the N(U) of the frame to be already received. |
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parents:
diff
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|
289 */ |
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Mychaela Falconia <falcon@freecalypso.org>
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|
290 uirx_store_nu (nu, llc_data->sapi->vur); |
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|
291 |
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parents:
diff
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|
292 /* |
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|
293 * Label S_UNITDATA |
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|
294 */ |
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diff
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|
295 |
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diff
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|
296 /* |
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|
297 * No flow control for SAPI 1. |
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diff
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|
298 */ |
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|
299 if (llc_data->current_sapi != LL_SAPI_1) |
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parents:
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|
300 { |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
301 /* |
fa8dc04885d8
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diff
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|
302 * Transit to state ADM_NOT_READY. |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
303 */ |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
304 SET_STATE (UIRX, UIRX_ADM_NOT_READY); |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
305 } |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
306 |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
307 /* |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
308 * Send primitive LL-UNITDATA-IND to either GMM, SNDCP, or GSMS, |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
309 * depending on the SAPI. |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
310 */ |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
311 switch (ll_unitdata_ind->sapi) |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
312 { |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
313 case LL_SAPI_1: |
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diff
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|
314 TRACE_PRIM_TO("GMM"); |
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|
315 TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi, |
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|
316 BYTELEN(ll_unitdata_ind->sdu.l_buf), |
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diff
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|
317 ll_unitdata_ind->cipher); |
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|
318 PSEND (hCommGMM, ll_unitdata_ind); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
319 break; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
320 |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
321 case LL_SAPI_3: |
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|
322 case LL_SAPI_5: |
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|
323 case LL_SAPI_9: |
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|
324 case LL_SAPI_11: |
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diff
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|
325 TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi, |
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|
326 BYTELEN(ll_unitdata_ind->sdu.l_buf), |
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diff
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|
327 ll_unitdata_ind->cipher); |
fa8dc04885d8
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diff
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|
328 PSEND (hCommSNDCP, ll_unitdata_ind); |
fa8dc04885d8
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diff
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|
329 break; |
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diff
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|
330 |
fa8dc04885d8
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diff
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|
331 case LL_SAPI_7: |
fa8dc04885d8
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diff
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|
332 #ifdef LL_2to1 |
fa8dc04885d8
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|
333 TRACE_PRIM_TO("MM"); |
fa8dc04885d8
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diff
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|
334 TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi, |
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diff
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|
335 BYTELEN(ll_unitdata_ind->sdu.l_buf), |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
336 ll_unitdata_ind->cipher); |
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diff
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|
337 PSEND (hCommMM, ll_unitdata_ind); |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
338 #else |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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|
339 TRACE_PRIM_TO("GSMS"); |
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Mychaela Falconia <falcon@freecalypso.org>
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|
340 TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi, |
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diff
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|
341 BYTELEN(ll_unitdata_ind->sdu.l_buf), |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
342 ll_unitdata_ind->cipher); |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
343 PSEND (hCommGSMS, ll_unitdata_ind); |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
344 #endif |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
345 break; |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
346 |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
347 default: |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
348 PFREE (ll_unitdata_ind); |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
349 TRACE_ERROR ("invalid global SAPI value"); |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
350 break; |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
351 } |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
352 break; |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
353 |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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diff
changeset
|
354 default: |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
355 PFREE (ll_unitdata_ind); |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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|
356 TRACE_ERROR( "SIG_RX_UIRX_DATA_IND unexpected" ); |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
357 break; |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
358 } |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
359 } /* sig_rx_uirx_data_ind() */ |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
360 |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
361 /*#endif */ /* CF_FAST_EXEC || _SIMULATION_ */ |
fa8dc04885d8
src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
362 |
fa8dc04885d8
src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
363 |