FreeCalypso > hg > fc-magnetite
annotate src/g23m-fad/ppp/ppp_ftxf.c @ 174:90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 12 Oct 2016 05:40:46 +0000 |
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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 PPP and implements all |
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18 | procedures and functions as described in the |
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19 | SDL-documentation (FTX-statemachine) |
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20 +----------------------------------------------------------------------------- |
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21 */ |
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22 |
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23 #define ENTITY_PPP |
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24 |
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25 /*==== INCLUDES =============================================================*/ |
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26 |
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27 #include "typedefs.h" /* to get Condat data types */ |
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28 #include "vsi.h" /* to get a lot of macros */ |
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29 #include "macdef.h" /* to get a lot of macros */ |
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30 #include "custom.h" /* to get a lot of macros */ |
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31 /*lint -efile(766,gsm.h) */ |
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32 #include "gsm.h" /* to get a lot of macros */ |
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33 /*lint -efile(766,cnf_ppp.h) */ |
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34 #include "cnf_ppp.h" /* to get cnf-definitions */ |
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35 /*lint -efile(766,mon_ppp.h) */ |
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36 #include "mon_ppp.h" /* to get mon-definitions */ |
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37 #include "prim.h" /* to get the definitions of used SAP and directions */ |
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38 #include "dti.h" /* to get the DTILIB definitions */ |
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39 #include "ppp.h" /* to get the global entity definitions */ |
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40 |
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41 #include "ppp_arbf.h" /* to get function interface from arb */ |
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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 #ifndef PPP_INT_RAM |
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52 /* |
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53 +------------------------------------------------------------------------------ |
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54 | Function : ftx_init |
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55 +------------------------------------------------------------------------------ |
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56 | Description : The function ftx_init() initializes Frame Transmit (FTX) |
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57 | |
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58 | Parameters : no parameters |
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59 | |
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60 +------------------------------------------------------------------------------ |
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61 */ |
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62 GLOBAL void ftx_init () |
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63 { |
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64 USHORT i; |
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65 |
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66 TRACE_FUNCTION( "ftx_init" ); |
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67 |
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68 ppp_data->ftx.acfc = PPP_ACFC_DEFAULT; |
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69 ppp_data->ftx.pfc = PPP_PFC_DEFAULT; |
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70 |
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71 /* |
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72 * inititialise ACCMTAB |
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73 */ |
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74 for(i=0;i<=255;i++) |
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75 { |
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76 if(i<0x20) |
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77 { |
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78 ppp_data->ftx.accmtab[i] = (PPP_ACCM_DEFAULT & (1UL << i)) ? 0xFF : 0x00; |
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79 } |
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80 else if((i EQ PPP_HDLC_FLAG) || |
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81 (i EQ PPP_HDLC_ESCAPE) || |
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82 (i EQ PPP_ASCII_DEL)) |
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83 { |
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84 ppp_data->ftx.accmtab[i] = 0xFF; |
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85 } |
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86 else |
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87 { |
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88 ppp_data->ftx.accmtab[i] = 0x00; |
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89 } |
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90 } |
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91 |
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92 |
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93 INIT_STATE( PPP_SERVICE_FTX , FTX_DEAD ); |
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94 } /* ftx_init() */ |
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95 #endif /* PPP_INT_RAM */ |
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96 |
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97 |
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98 |
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99 #ifndef PPP_FLASH_ROM |
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100 /* |
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101 +------------------------------------------------------------------------------ |
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102 | Function : ftx_get_frame |
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103 +------------------------------------------------------------------------------ |
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104 | Description : The function ftx_get_frame() puts the given packet into a HDLC |
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105 | frame. A FCS is calculated and put at the the end of the |
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106 | packet. After that every byte is examined and preceeded with an |
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107 | escape character when certain condiitions are met. |
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108 | |
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109 | This function has been optimized - FCS calculation and escaping |
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110 | are done in the same loop. |
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111 | |
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112 | Parameters : ptype - packet type |
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113 | packet - pointer to a generic data descriptor |
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114 | ptr_frame - returns a list of generic data descriptors |
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115 | |
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116 +------------------------------------------------------------------------------ |
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117 */ |
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118 GLOBAL void ftx_get_frame (USHORT ptype, T_desc2* packet, T_desc_list2* ptr_frame) |
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119 { |
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120 T_desc2 *temp_desc1, *temp_desc2; |
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121 USHORT calc_fcs; |
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122 USHORT i; |
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123 UBYTE currentByte; |
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124 UBYTE escape; |
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125 |
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126 TRACE_FUNCTION( "ftx_get_frame" ); |
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127 |
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128 /* |
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129 * create a new descriptor for address, control and protocol field and put |
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130 * it in front of the linked descriptor list |
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131 */ |
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132 /* |
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133 * 1 octet address field |
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134 * 1 octet control field |
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135 * 2 octets protocol field (uncompressed) |
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136 *---------- |
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137 * 4 octets |
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138 */ |
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139 MALLOC (temp_desc1, (USHORT)(sizeof(T_desc2) - 1 + 4)); |
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140 temp_desc1->next = (ULONG)packet; |
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141 packet = temp_desc1; |
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142 packet->len = 0; |
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143 /* |
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144 * if no address and control field compression add both |
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145 * in LCP packets we need always address and control field |
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146 */ |
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147 if((ppp_data->ftx.acfc EQ FALSE) || |
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148 (ptype EQ DTI_PID_LCP)) |
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149 { |
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150 packet->buffer[packet->len] = 0xff; |
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151 packet->len++; |
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152 packet->buffer[packet->len] = 0x03; |
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153 packet->len++; |
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154 } |
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155 /* |
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156 * if no protocol field compression add most significant octet |
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157 * of the protocol field |
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158 * in LCP packets we need always uncompressed protocol field |
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159 */ |
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160 if((ppp_data->ftx.pfc EQ FALSE) || |
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161 (ptype > 0x00ff) || |
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162 (ptype EQ DTI_PID_LCP)) |
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163 { |
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164 packet->buffer[packet->len] = (UBYTE)(ptype >> 8); |
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165 packet->len++; |
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166 } |
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167 /* |
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168 * add protocol field least significant octet |
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169 */ |
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170 packet->buffer[packet->len] = (UBYTE)(ptype & 0xff); |
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171 packet->len++; |
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172 |
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173 |
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174 /* |
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175 * create complete frame |
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176 * use async-control-character-map and copy the packet into descriptor with |
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177 * a size of FTX_GET_DESC_SIZE |
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178 */ |
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179 MALLOC (temp_desc1, (USHORT)(sizeof(T_desc2) - 1 + FTX_GET_DESC_SIZE)); |
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180 temp_desc1->next = (ULONG)NULL; |
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181 ptr_frame->first = (ULONG)temp_desc1; |
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182 |
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183 |
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184 /* |
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185 * reset ptr_frame->list_len, it will be incremented by temp_desc1->len |
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186 * when the packet is completely processed, at the end it will contain |
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187 * the length of the whole frame in bytes |
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188 */ |
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189 ptr_frame->list_len = 0; |
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190 |
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191 |
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192 /* |
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193 * insert HDLC-Flag - to mark the start of the frame |
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194 */ |
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195 temp_desc1->len = 1; |
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196 temp_desc1->size = 1; |
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197 temp_desc1->offset = 1; |
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198 temp_desc1->buffer[0] = PPP_HDLC_FLAG; |
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199 escape=FALSE; |
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200 |
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201 |
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202 /* |
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203 * init FCS |
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204 */ |
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205 calc_fcs = PPP_INITFCS; |
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206 |
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207 |
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208 /* |
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209 * ATTENTION: the following two while loops contain equivalent |
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210 * code - if you edit the code make sure you edit BOTH loops |
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211 */ |
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212 if(ptype EQ DTI_PID_LCP) |
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213 { |
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214 while(packet NEQ NULL) |
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215 { |
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216 i=0; |
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217 while(i < packet->len) |
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218 { |
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219 currentByte = packet->buffer[i]; |
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220 |
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parents:
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221 if(escape EQ TRUE) |
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222 { |
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223 temp_desc1->buffer[temp_desc1->len] = currentByte ^ 0x20; |
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parents:
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224 |
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225 calc_fcs=(calc_fcs >> 8) ^ |
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226 ppp_data->fcstab[(calc_fcs ^ currentByte) & 0xff]; |
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227 |
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228 escape=FALSE; |
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229 i++; |
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230 } |
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231 |
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parents:
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232 /* |
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233 * In LCP packets we escape ALL characters below 0x20. |
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234 * In addition to that PPP_HDLC_FLAG, PPP_HDLC_ESCAPE, |
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235 * PPP_ASCII_DEL are escaped too. These characters are marked in |
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236 * in the ACCM table |
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parents:
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|
237 */ |
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|
238 else if((currentByte < 0x20) || ppp_data->ftx.accmtab[currentByte]) |
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239 { |
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240 temp_desc1->buffer[temp_desc1->len] = PPP_HDLC_ESCAPE; |
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241 escape = TRUE; |
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242 } |
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243 |
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244 else |
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245 { |
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|
246 temp_desc1->buffer[temp_desc1->len] = currentByte; |
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247 |
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248 calc_fcs=(calc_fcs >> 8) ^ |
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249 ppp_data->fcstab[(calc_fcs ^ currentByte) & 0xff]; |
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|
250 |
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251 i++; |
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252 } |
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253 |
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254 temp_desc1->len++; |
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|
255 |
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256 if(temp_desc1->len >= FTX_GET_DESC_SIZE) |
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|
257 { |
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|
258 ptr_frame->list_len +=temp_desc1->len; |
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259 |
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260 temp_desc2=temp_desc1; |
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parents:
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|
261 MALLOC (temp_desc1, |
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|
262 (USHORT)(sizeof(T_desc2) - 1 + FTX_GET_DESC_SIZE)); |
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parents:
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|
263 |
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parents:
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|
264 temp_desc1->len=0; |
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parents:
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|
265 temp_desc1->next = (ULONG)NULL; |
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parents:
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|
266 |
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parents:
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|
267 temp_desc2->next=(ULONG)temp_desc1; |
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parents:
diff
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|
268 } |
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parents:
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|
269 } |
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parents:
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|
270 |
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parents:
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|
271 temp_desc2=packet; |
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|
272 packet=(T_desc2*)packet->next; |
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parents:
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|
273 MFREE(temp_desc2); |
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parents:
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|
274 } |
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parents:
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|
275 ptr_frame->list_len +=temp_desc1->len; |
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parents:
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|
276 } |
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parents:
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|
277 else |
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parents:
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|
278 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
279 while(packet NEQ NULL) |
90eb61ecd093
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parents:
diff
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|
280 { |
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parents:
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|
281 i=0; |
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parents:
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|
282 while(i < packet->len) |
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parents:
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|
283 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
284 currentByte = packet->buffer[i]; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
285 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
286 if(escape EQ TRUE) |
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parents:
diff
changeset
|
287 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
288 temp_desc1->buffer[temp_desc1->len] = currentByte ^ 0x20; |
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parents:
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|
289 |
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parents:
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|
290 calc_fcs=(calc_fcs >> 8) ^ |
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parents:
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|
291 ppp_data->fcstab[(calc_fcs ^ currentByte) & 0xff]; |
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parents:
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|
292 |
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parents:
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|
293 escape=FALSE; |
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parents:
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|
294 i++; |
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parents:
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|
295 } |
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parents:
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|
296 |
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parents:
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|
297 /* |
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parents:
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|
298 * In packets other than LCP we escape only those characters |
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parents:
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|
299 * below 0x20 that are marked in the ACCM table. |
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parents:
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|
300 * In addition to that PPP_HDLC_FLAG, PPP_HDLC_ESCAPE, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
301 * PPP_ASCII_DEL are escaped too. These characters are marked in |
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parents:
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|
302 * in the same table. |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
303 */ |
90eb61ecd093
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parents:
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|
304 else if(ppp_data->ftx.accmtab[currentByte]) |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
305 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
306 temp_desc1->buffer[temp_desc1->len] = PPP_HDLC_ESCAPE; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
307 escape = TRUE; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
308 } |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
309 |
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parents:
diff
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|
310 else |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
311 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
312 temp_desc1->buffer[temp_desc1->len] = currentByte; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
313 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
314 calc_fcs=(calc_fcs >> 8) ^ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
315 ppp_data->fcstab[(calc_fcs ^ currentByte) & 0xff]; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
316 |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
317 i++; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
318 } |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
319 |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
320 temp_desc1->len++; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
321 |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
322 if(temp_desc1->len >= FTX_GET_DESC_SIZE) |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
323 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
324 ptr_frame->list_len +=temp_desc1->len; |
90eb61ecd093
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parents:
diff
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|
325 |
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parents:
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326 temp_desc2=temp_desc1; |
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parents:
diff
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|
327 MALLOC (temp_desc1, |
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parents:
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|
328 (USHORT)(sizeof(T_desc2) - 1 + FTX_GET_DESC_SIZE)); |
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parents:
diff
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|
329 temp_desc1->len=0; |
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parents:
diff
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|
330 temp_desc1->next = (ULONG)NULL; |
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parents:
diff
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|
331 |
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parents:
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changeset
|
332 temp_desc2->next=(ULONG)temp_desc1; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
333 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
334 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
335 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
336 temp_desc2=packet; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
337 packet=(T_desc2*)packet->next; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
338 MFREE(temp_desc2); |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
339 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
340 ptr_frame->list_len +=temp_desc1->len; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
341 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
342 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
343 /* |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
344 * finish FCS calculation |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
345 */ |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
346 calc_fcs ^= 0xffff; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
347 |
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parents:
diff
changeset
|
348 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
349 /* |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
350 * create a new descriptor for FCS and HDLC-Flag |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
351 * put the descriptor at the end of the descriptor list |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
352 * |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
353 * FCS must be escaped too, allocate two bytes more - just in case |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
354 * 2 for FCS, 2 for PPP_HDLC_ESCAPE, 1 for PPP_HDLC_FLAG |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
355 * |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
356 */ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
357 if(temp_desc1->len + 5 >= FTX_GET_DESC_SIZE) |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
358 { |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
359 MALLOC (temp_desc2, (USHORT)(sizeof(T_desc2) - 1 + 5)); |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
360 temp_desc2->len = 0; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
361 temp_desc2->size = 0; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
362 temp_desc2->offset = 0; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
363 temp_desc2->next = (ULONG)NULL; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
364 |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
365 temp_desc1->next = (ULONG)temp_desc2; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
366 temp_desc1 = temp_desc2; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
367 } |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
368 |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
369 /* |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
370 * insert the FCS, escape when necessary |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
371 */ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
372 #ifdef _SIMULATION_ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
373 temp_desc1->buffer[temp_desc1->len]=(UBYTE)(PPP_GOODFCS >> 8); |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
374 temp_desc1->buffer[temp_desc1->len+1]=(UBYTE)(PPP_GOODFCS & 0x00ff); |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
375 temp_desc1->len += 2; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
376 ptr_frame->list_len += 2; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
377 #else /* _SIMULATION_ */ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
378 /* |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
379 * least significant octet first |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
380 */ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
381 if(ptype EQ DTI_PID_LCP) |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
382 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
383 currentByte = (UBYTE)(calc_fcs & 0x00ff); |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
384 if((currentByte < 0x20) || ppp_data->ftx.accmtab[currentByte]) |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
385 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
386 temp_desc1->buffer[temp_desc1->len] = PPP_HDLC_ESCAPE; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
387 temp_desc1->buffer[temp_desc1->len+1] = currentByte ^ 0x20; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
388 temp_desc1->len += 2; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
389 ptr_frame->list_len += 2; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
390 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
391 else |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
392 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
393 temp_desc1->buffer[temp_desc1->len] = currentByte; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
394 temp_desc1->len++; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
395 ptr_frame->list_len++; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
396 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
397 |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
398 currentByte = (UBYTE)(calc_fcs >> 8); |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
399 if((currentByte < 0x20) || ppp_data->ftx.accmtab[currentByte]) |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
400 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
401 temp_desc1->buffer[temp_desc1->len] = PPP_HDLC_ESCAPE; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
402 temp_desc1->buffer[temp_desc1->len+1] = currentByte ^ 0x20; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
403 temp_desc1->len += 2; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
404 ptr_frame->list_len += 2; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
405 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
406 else |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
407 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
408 temp_desc1->buffer[temp_desc1->len] = currentByte; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
409 temp_desc1->len++; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
410 ptr_frame->list_len++; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
411 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
412 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
413 else |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
414 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
415 currentByte = (UBYTE)(calc_fcs & 0x00ff); |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
416 if(ppp_data->ftx.accmtab[currentByte]) |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
417 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
418 temp_desc1->buffer[temp_desc1->len] = PPP_HDLC_ESCAPE; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
419 temp_desc1->buffer[temp_desc1->len+1] = currentByte ^ 0x20; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
420 temp_desc1->len += 2; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
421 ptr_frame->list_len += 2; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
422 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
423 else |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
424 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
425 temp_desc1->buffer[temp_desc1->len] = currentByte; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
426 temp_desc1->len++; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
427 ptr_frame->list_len++; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
428 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
429 |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
430 currentByte = (UBYTE)(calc_fcs >> 8); |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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431 if(ppp_data->ftx.accmtab[currentByte]) |
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432 { |
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433 temp_desc1->buffer[temp_desc1->len] = PPP_HDLC_ESCAPE; |
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434 temp_desc1->buffer[temp_desc1->len+1] = currentByte ^ 0x20; |
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435 temp_desc1->len += 2; |
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436 ptr_frame->list_len += 2; |
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437 } |
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438 else |
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439 { |
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440 temp_desc1->buffer[temp_desc1->len] = currentByte; |
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441 temp_desc1->len++; |
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442 ptr_frame->list_len++; |
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parents:
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443 } |
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444 } |
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445 |
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446 #endif /* _SIMULATION_ */ |
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parents:
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447 |
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parents:
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448 /* |
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449 * insert HDLC-Flag - to mark the start of the frame |
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parents:
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450 */ |
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451 temp_desc1->buffer[temp_desc1->len] = PPP_HDLC_FLAG; |
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452 temp_desc1->len++; |
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parents:
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453 temp_desc1->size = temp_desc1->len; |
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parents:
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454 ptr_frame->list_len++; |
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parents:
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455 |
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456 |
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457 } /* ftx_get_frame() */ |
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458 #endif /* PPP_FLASH_ROM */ |
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parents:
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459 |
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|
460 |
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parents:
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461 |
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parents:
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|
462 #ifndef PPP_INT_RAM |
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parents:
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463 /* |
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parents:
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464 +------------------------------------------------------------------------------ |
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465 | Function : ftx_check_frame |
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parents:
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466 +------------------------------------------------------------------------------ |
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parents:
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467 | Description : The function ftx_check_frame() checks for flag at begin and end |
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parents:
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468 | of the frame and calculates length of frame. |
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parents:
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|
469 | |
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parents:
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470 | Parameters : ptr_frame - gives just a frame and returns a frame with length |
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parents:
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|
471 | |
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parents:
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|
472 +------------------------------------------------------------------------------ |
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parents:
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|
473 */ |
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|
474 GLOBAL void ftx_check_frame (T_desc_list2* ptr_frame) |
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parents:
diff
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|
475 { |
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parents:
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|
476 T_desc2* frame; |
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parents:
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|
477 T_desc2* temp_desc; |
90eb61ecd093
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parents:
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|
478 UBYTE last_byte; |
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parents:
diff
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|
479 |
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parents:
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|
480 TRACE_FUNCTION( "ftx_check_frame" ); |
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parents:
diff
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|
481 |
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|
482 frame = (T_desc2*)ptr_frame->first; |
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parents:
diff
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|
483 |
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parents:
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|
484 while((frame) && (frame->len EQ 0)) |
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parents:
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|
485 frame = (T_desc2*)frame->next; |
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parents:
diff
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|
486 |
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parents:
diff
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|
487 if(frame) |
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parents:
diff
changeset
|
488 { |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
489 /* |
90eb61ecd093
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parents:
diff
changeset
|
490 * if the first character isnt the HDLC flag then |
90eb61ecd093
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parents:
diff
changeset
|
491 * create a new first data descriptor containing just the HDLC flag |
90eb61ecd093
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parents:
diff
changeset
|
492 */ |
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parents:
diff
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|
493 if(frame->buffer[0] NEQ PPP_HDLC_FLAG) |
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parents:
diff
changeset
|
494 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
495 MALLOC (frame, (USHORT)(sizeof(T_desc2) - 1 + 1)); |
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parents:
diff
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|
496 frame->next = ptr_frame->first; |
90eb61ecd093
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parents:
diff
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|
497 frame->len = 1; |
90eb61ecd093
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parents:
diff
changeset
|
498 frame->buffer[0] = PPP_HDLC_FLAG; |
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parents:
diff
changeset
|
499 ptr_frame->first = (ULONG)frame; |
90eb61ecd093
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parents:
diff
changeset
|
500 } |
90eb61ecd093
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parents:
diff
changeset
|
501 /* |
90eb61ecd093
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parents:
diff
changeset
|
502 * search for the last character and if it isnt the HDLC flag then |
90eb61ecd093
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parents:
diff
changeset
|
503 * create a new last data descriptor containing just the HDLC flag. |
90eb61ecd093
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parents:
diff
changeset
|
504 * calculate length of whole data. |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
505 */ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
506 ptr_frame->list_len = 0; |
90eb61ecd093
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parents:
diff
changeset
|
507 for(frame = (T_desc2*)ptr_frame->first; |
90eb61ecd093
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parents:
diff
changeset
|
508 frame; |
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parents:
diff
changeset
|
509 frame = (T_desc2*)frame->next) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
510 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
511 if(frame->len) |
90eb61ecd093
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parents:
diff
changeset
|
512 { |
90eb61ecd093
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parents:
diff
changeset
|
513 ptr_frame->list_len+= frame->len; |
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parents:
diff
changeset
|
514 last_byte = frame->buffer[frame->len - 1]; |
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parents:
diff
changeset
|
515 } |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
516 temp_desc = frame; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
517 } |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
518 if(last_byte NEQ PPP_HDLC_FLAG) /*lint !e644 last_byte may not have been initialized */ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
519 { |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
520 MALLOC (frame, (USHORT)(sizeof(T_desc2) - 1 + 1)); |
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parents:
diff
changeset
|
521 frame->next = (ULONG)NULL; |
90eb61ecd093
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parents:
diff
changeset
|
522 frame->len = 1; |
90eb61ecd093
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parents:
diff
changeset
|
523 frame->buffer[0] = PPP_HDLC_FLAG; |
90eb61ecd093
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parents:
diff
changeset
|
524 temp_desc->next = (ULONG)frame; /*lint !e771 temp_desc conceivably not initialized */ |
90eb61ecd093
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parents:
diff
changeset
|
525 } |
90eb61ecd093
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parents:
diff
changeset
|
526 } |
90eb61ecd093
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parents:
diff
changeset
|
527 else |
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parents:
diff
changeset
|
528 { |
90eb61ecd093
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parents:
diff
changeset
|
529 /* |
90eb61ecd093
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parents:
diff
changeset
|
530 * free the empty frame |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
531 */ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
532 arb_discard_packet((T_desc2*)ptr_frame->first); |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
533 ptr_frame->first = (ULONG)NULL; |
90eb61ecd093
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parents:
diff
changeset
|
534 ptr_frame->list_len = 0; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
535 } |
90eb61ecd093
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parents:
diff
changeset
|
536 } /* ftx_check_frame() */ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
537 #endif /* PPP_INT_RAM */ |