FreeCalypso > hg > fc-magnetite
annotate src/g23m-gprs/llc/llc_irxs.c @ 212:e7a67accfad9
cdg-hybrid cdginc headers created
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 14 Oct 2016 21:52:58 +0000 |
parents | 219afcfc6250 |
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rev | line source |
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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 (IRX-statemachine) |
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20 +----------------------------------------------------------------------------- |
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21 */ |
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22 |
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23 #ifndef LLC_IRXS_C |
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24 #define LLC_IRXS_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_irxf.h" /* to get IRX helper functions */ |
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42 #include "llc_irxl.h" /* to get IRX label functions */ |
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43 #include "llc_itxs.h" /* to get IRX/ITX signals */ |
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44 #include "llc_us.h" /* to get U signals */ |
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45 |
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46 |
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47 /*==== CONST ================================================================*/ |
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48 |
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49 /*==== LOCAL VARS ===========================================================*/ |
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50 |
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51 /*==== PRIVATE FUNCTIONS ====================================================*/ |
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52 |
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53 /*==== PUBLIC FUNCTIONS =====================================================*/ |
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54 |
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55 |
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56 |
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57 /* |
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58 +------------------------------------------------------------------------------ |
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59 | Function : sig_llme_irx_assign_req |
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60 +------------------------------------------------------------------------------ |
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61 | Description : Handles the internal signal SIG_LLME_IRX_ASSIGN_REQ |
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62 | |
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63 | Parameters : |
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64 | |
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65 +------------------------------------------------------------------------------ |
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66 */ |
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67 GLOBAL void sig_llme_irx_assign_req (void) |
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68 { |
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69 TRACE_ISIG( "sig_llme_irx_assign_req" ); |
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70 |
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71 switch (GET_STATE(IRX)) |
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72 { |
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73 case IRX_TLLI_UNASSIGNED: |
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74 /* |
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75 * Initialise current incarnation. |
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76 */ |
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77 irx_init_sapi(); |
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78 SET_STATE (IRX, IRX_TLLI_ASSIGNED); |
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79 break; |
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80 |
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81 default: |
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82 TRACE_ERROR( "SIG_LLME_IRX_ASSIGN_REQ unexpected" ); |
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83 break; |
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84 } |
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85 } /* sig_llme_irx_assign_req() */ |
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86 |
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87 |
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88 /* |
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89 +------------------------------------------------------------------------------ |
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90 | Function : sig_llme_irx_unassign_req |
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91 +------------------------------------------------------------------------------ |
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92 | Description : Handles the internal signal SIG_LLME_IRX_UNASSIGN_REQ |
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93 | |
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94 | Parameters : |
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95 | |
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96 +------------------------------------------------------------------------------ |
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97 */ |
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98 GLOBAL void sig_llme_irx_unassign_req (void) |
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99 { |
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100 TRACE_ISIG( "sig_llme_irx_unassign_req" ); |
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101 |
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102 switch (GET_STATE(IRX)) |
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103 { |
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104 case IRX_TLLI_UNASSIGNED: |
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105 /* |
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106 * Ignore unexpected signal |
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107 */ |
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108 break; |
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109 |
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110 default: |
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111 /* |
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112 * Delete stored I frames and change to state TLLI_UNASSIGNED |
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113 */ |
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114 irx_queue_clean(); |
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115 irx_init_sapi(); |
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116 SET_STATE (IRX, IRX_TLLI_UNASSIGNED); |
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117 break; |
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118 } |
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119 } /* sig_llme_irx_unassign_req() */ |
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120 |
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121 |
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122 /* |
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123 +------------------------------------------------------------------------------ |
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124 | Function : sig_llme_irx_reset_req |
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125 +------------------------------------------------------------------------------ |
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126 | Description : Handles the internal signal SIG_LLME_IRX_RESET_REQ |
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127 | |
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128 | Parameters : |
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129 | |
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130 +------------------------------------------------------------------------------ |
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131 */ |
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132 GLOBAL void sig_llme_irx_reset_req (void) |
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133 { |
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134 TRACE_ISIG( "sig_llme_irx_reset_req" ); |
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135 |
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136 |
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137 switch (GET_STATE(IRX)) |
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138 { |
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139 case IRX_TLLI_UNASSIGNED: |
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140 case IRX_TLLI_ASSIGNED: |
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141 /* |
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142 * Ignore signal. |
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143 */ |
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144 break; |
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145 |
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146 case IRX_ABM: |
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147 case IRX_ABM_BUSY: |
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148 /* |
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149 * Delete stored I frames and change to state TLLI_UNASSIGNED |
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150 */ |
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151 irx_queue_clean(); |
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152 irx_init_sapi(); |
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153 SET_STATE (IRX, IRX_TLLI_ASSIGNED); |
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154 break; |
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155 |
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156 default: |
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157 TRACE_ERROR( "SIG_LLME_IRX_RESET_REQ unexpected" ); |
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158 break; |
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159 } |
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160 } /* sig_llme_irx_reset_req() */ |
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161 |
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162 |
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163 |
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164 /* |
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165 +------------------------------------------------------------------------------ |
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166 | Function : sig_llme_irx_abmest_req |
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167 +------------------------------------------------------------------------------ |
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168 | Description : Handles the internal signal SIG_LLME_IRX_ABMEST_REQ |
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169 | |
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170 | Parameters : |
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171 | |
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172 +------------------------------------------------------------------------------ |
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173 */ |
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174 GLOBAL void sig_llme_irx_abmest_req (void) |
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175 { |
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176 TRACE_ISIG( "sig_llme_irx_abmest_req" ); |
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177 |
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178 switch (GET_STATE(IRX)) |
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179 { |
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180 case IRX_TLLI_ASSIGNED: |
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181 /* |
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182 * Initialize ABM operation |
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183 */ |
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184 irx_init_abm(); |
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185 SET_STATE (IRX, IRX_ABM); |
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186 break; |
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187 |
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188 case IRX_ABM: |
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189 case IRX_ABM_BUSY: |
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190 /* |
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191 * Delete stored I frames and re-initialize ABM operation |
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192 */ |
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193 irx_queue_clean(); |
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194 irx_init_abm(); |
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195 SET_STATE (IRX, IRX_ABM); |
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196 break; |
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197 |
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198 default: |
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199 TRACE_ERROR( "SIG_LLME_IRX_ABMEST_REQ unexpected" ); |
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200 break; |
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201 } |
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202 } /* sig_llme_irx_abmest_req() */ |
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203 |
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204 |
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205 |
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206 /* |
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207 +------------------------------------------------------------------------------ |
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208 | Function : sig_llme_irx_abmrel_req |
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209 +------------------------------------------------------------------------------ |
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210 | Description : Handles the internal signal SIG_LLME_IRX_ABMREL_REQ |
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211 | |
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212 | Parameters : |
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213 | |
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214 +------------------------------------------------------------------------------ |
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215 */ |
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216 GLOBAL void sig_llme_irx_abmrel_req (void) |
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217 { |
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218 TRACE_ISIG( "sig_llme_irx_abmrel_req" ); |
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219 |
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220 switch (GET_STATE(IRX)) |
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221 { |
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222 case IRX_ABM: |
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223 case IRX_ABM_BUSY: |
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224 /* |
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225 * Delete stored I frames and end ABM operation |
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226 */ |
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227 irx_queue_clean(); |
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228 irx_init_sapi(); |
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229 SET_STATE (IRX, IRX_TLLI_ASSIGNED); |
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230 break; |
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231 |
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232 default: |
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233 /* TRACE_ERROR( "SIG_LLME_IRX_ABMREL_REQ unexpected" ); but ok */ |
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234 break; |
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235 } |
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236 } /* sig_llme_irx_abmrel_req() */ |
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237 |
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238 |
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239 |
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240 /* |
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241 +------------------------------------------------------------------------------ |
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242 | Function : sig_rx_irx_data_ind |
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243 +------------------------------------------------------------------------------ |
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244 | Description : Handles the internal signal SIG_RX_IRX_DATA_IND |
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245 | |
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246 | Parameters : ll_unitdata_ind - a valid pointer to an LL-UNITDATA-IND |
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247 | primitive |
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248 | command - contains the command within the primitive |
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249 | frame_type - type of PDU (I or S frame) |
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250 | cr_bit - setting of the CR bit |
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251 | a_bit - setting of the A bit |
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252 | ns - send sequence number of the frame |
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253 | nr - receive sequence number of the frame |
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254 | |
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255 +------------------------------------------------------------------------------ |
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256 */ |
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257 GLOBAL void sig_rx_irx_data_ind (T_LL_UNITDATA_IND *ll_unitdata_ind, |
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258 T_COMMAND command, |
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259 T_PDU_TYPE frame_type, |
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260 T_BIT cr_bit, |
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261 T_BIT a_bit, |
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262 T_FRAME_NUM ns, |
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263 T_FRAME_NUM nr) |
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264 { |
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265 UBYTE state; |
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266 |
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267 TRACE_ISIG( "sig_rx_irx_data_ind" ); |
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268 |
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269 #ifdef TRACE_EVE |
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270 { |
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271 static char* sf[] = { "RR", "ACK", "RNR", "SACK" }; |
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272 |
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273 if(command <= 3) |
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274 { |
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275 if(frame_type == I_FRAME) |
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276 { |
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277 TRACE_4_INFO("got %s I-Frame NS:%d NR:%d A:%d", sf[command], ns, nr, a_bit); |
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278 } |
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279 else |
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280 { |
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281 TRACE_3_INFO("got %s S-Frame NR:%d A:%d", sf[command], nr, a_bit); |
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282 } |
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283 } |
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284 } |
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285 #endif |
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286 |
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287 llc_data->u->current_tlli = ll_unitdata_ind->tlli; |
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288 |
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289 switch ( (state = GET_STATE(IRX)) ) |
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290 { |
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291 case IRX_TLLI_ASSIGNED: |
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292 /* |
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293 * Send a DM response to any valid command received, that |
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294 * cannot be handeled (GSM 4.64 Release 6.7.0 Chapter 6.4.1.4) |
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295 */ |
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296 TRACE_0_INFO("S- or I/S-Frame received in unexpected state"); |
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297 |
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298 PFREE (ll_unitdata_ind); |
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299 |
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300 sig_irx_u_no_frame_expected_ind(); |
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301 break; |
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302 |
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303 case IRX_ABM: |
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304 case IRX_ABM_BUSY: |
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305 /* |
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306 * va <= nr <= vs |
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307 */ |
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308 if ( FRAME_NUM_VALID (llc_data->sapi->va, nr, llc_data->sapi->vs) ) |
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309 { |
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310 /* |
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311 * frame valid |
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312 */ |
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313 irx_ack_all_to ((T_FRAME_NUM)(nr - 1)); |
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314 |
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315 switch (command) |
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316 { |
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317 case I_RR: |
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318 /* |
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319 * Label IRX_RR |
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320 */ |
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321 sig_irx_itx_peer_ready_ind(); |
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322 break; |
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323 |
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324 case I_ACK: |
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325 /* |
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326 * Label IRX_ACK |
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327 */ |
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328 sig_irx_itx_ack_ind (FALSE, nr ); |
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329 sig_irx_itx_ack_ind (TRUE, (T_FRAME_NUM)(nr + 1)); |
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330 sig_irx_itx_cnf_l3data_req (); |
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331 sig_irx_itx_peer_ready_ind (); |
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|
332 break; |
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|
333 |
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334 case I_SACK: |
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|
335 /* |
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336 * Label IRX_SACK |
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|
337 */ |
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338 sig_irx_itx_ack_ind (FALSE, nr); |
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339 irx_handle_sack (nr, ll_unitdata_ind, frame_type); |
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|
340 sig_irx_itx_peer_ready_ind(); |
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|
341 break; |
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|
342 |
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343 case I_RNR: |
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344 /* |
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345 * Label IRX_RNR |
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346 */ |
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347 sig_irx_itx_peer_busy_ind(); |
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348 break; |
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349 |
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350 default: |
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351 TRACE_ERROR( "Unexpected command received" ); |
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352 break; |
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|
353 } |
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|
354 } |
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|
355 |
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|
356 if (frame_type == I_FRAME) |
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357 { |
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358 irx_label_if (ll_unitdata_ind, ns, a_bit, state); |
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|
359 } |
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|
360 else /* S_FRAME */ |
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|
361 { |
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|
362 if (state == IRX_ABM) |
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|
363 { |
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|
364 irx_send_ack (a_bit); |
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|
365 PFREE (ll_unitdata_ind); |
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|
366 } |
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|
367 else |
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|
368 { |
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369 irx_send_rnr (); |
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|
370 PFREE (ll_unitdata_ind); |
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|
371 } |
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parents:
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|
372 } |
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|
373 break; |
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diff
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|
374 |
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|
375 default: |
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parents:
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|
376 /* |
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parents:
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|
377 * Free unexpected data |
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parents:
diff
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|
378 */ |
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|
379 PFREE (ll_unitdata_ind); |
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|
380 TRACE_ERROR( "SIG_RX_IRX_DATA_IND unexpected" ); |
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parents:
diff
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|
381 break; |
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parents:
diff
changeset
|
382 } |
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parents:
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|
383 } /* sig_rx_irx_data_ind() */ |
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parents:
diff
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|
384 |
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parents:
diff
changeset
|
385 |
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parents:
diff
changeset
|
386 |
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parents:
diff
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|
387 /* |
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parents:
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|
388 +------------------------------------------------------------------------------ |
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|
389 | Function : sig_itx_irx_s_frame_req |
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|
390 +------------------------------------------------------------------------------ |
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|
391 | Description : Handles the internal signal SIG_ITX_IRX_S_FRAME_REQ |
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|
392 | |
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|
393 | Parameters : |
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|
394 | |
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|
395 +------------------------------------------------------------------------------ |
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parents:
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|
396 */ |
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|
397 GLOBAL void sig_itx_irx_s_frame_req (T_ABIT_REQ_TYPE req) |
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|
398 { |
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parents:
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|
399 TRACE_ISIG( "sig_itx_irx_s_frame_req" ); |
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parents:
diff
changeset
|
400 |
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parents:
diff
changeset
|
401 switch (GET_STATE(IRX)) |
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parents:
diff
changeset
|
402 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
403 case IRX_ABM: |
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parents:
diff
changeset
|
404 /* |
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parents:
diff
changeset
|
405 * Send an S frame appropriate for the current state |
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parents:
diff
changeset
|
406 */ |
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parents:
diff
changeset
|
407 if ( llc_data->irx->last_ns == NS_EQUAL_VR ) |
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parents:
diff
changeset
|
408 { |
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diff
changeset
|
409 sig_irx_itx_send_rr_req (req); |
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parents:
diff
changeset
|
410 } |
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parents:
diff
changeset
|
411 else if ( llc_data->irx->last_ns == NS_EQUAL_VR_PLUS_1 ) |
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parents:
diff
changeset
|
412 { |
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parents:
diff
changeset
|
413 sig_irx_itx_send_ack_req (req); |
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diff
changeset
|
414 } |
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diff
changeset
|
415 else |
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parents:
diff
changeset
|
416 { |
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parents:
diff
changeset
|
417 T_SACK_BITMAP bitmap; |
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parents:
diff
changeset
|
418 |
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changeset
|
419 irx_build_sack_bitmap( &bitmap ); |
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changeset
|
420 sig_irx_itx_send_sack_req (req, &bitmap); |
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diff
changeset
|
421 } |
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parents:
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changeset
|
422 /* SET_STATE (IRX, SAME_STATE); */ |
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parents:
diff
changeset
|
423 break; |
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diff
changeset
|
424 |
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parents:
diff
changeset
|
425 |
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diff
changeset
|
426 case IRX_ABM_BUSY: |
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parents:
diff
changeset
|
427 /* |
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parents:
diff
changeset
|
428 * The appropriate S frame in state busy anytime is an RNR |
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parents:
diff
changeset
|
429 */ |
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parents:
diff
changeset
|
430 sig_irx_itx_send_rnr_req (req); |
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parents:
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431 /* SET_STATE (IRX, SAME_STATE); */ |
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Mychaela Falconia <falcon@freecalypso.org>
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432 break; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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433 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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434 default: |
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Mychaela Falconia <falcon@freecalypso.org>
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435 TRACE_ERROR( "SIG_ITX_IRX_S_FRAME_REQ unexpected" ); |
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Mychaela Falconia <falcon@freecalypso.org>
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436 break; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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437 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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438 } /* sig_itx_irx_s_frame_req() */ |
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parents:
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439 |
219afcfc6250
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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440 |