git.oblomov.eu Git - linux-2.6/blob - drivers/staging/winbond/mds.c

   1 #include "os_common.h"
   2
   3 void
   4 Mds_reset_descriptor(PADAPTER Adapter)
   5 {
   6         PMDS pMds = &Adapter->Mds;
   7
   8         pMds->TxPause = 0;
   9         pMds->TxThreadCount = 0;
  10         pMds->TxFillIndex = 0;
  11         pMds->TxDesIndex = 0;
  12         pMds->ScanTxPause = 0;
  13         memset(pMds->TxOwner, 0, ((MAX_USB_TX_BUFFER_NUMBER + 3) & ~0x03));
  14 }
  15
  16 unsigned char
  17 Mds_initial(PADAPTER Adapter)
  18 {
  19         PMDS pMds = &Adapter->Mds;
  20
  21         pMds->TxPause = FALSE;
  22         pMds->TxRTSThreshold = DEFAULT_RTSThreshold;
  23         pMds->TxFragmentThreshold = DEFAULT_FRAGMENT_THRESHOLD;
  24
  25         vRxTimerInit(Adapter);//for WPA countermeasure
  26
  27         return hal_get_tx_buffer( &Adapter->sHwData, &pMds->pTxBuffer );
  28 }
  29
  30 void
  31 Mds_Destroy(PADAPTER Adapter)
  32 {
  33         vRxTimerStop(Adapter);
  34 }
  35
  36 void
  37 Mds_Tx(PADAPTER Adapter)
  38 {
  39         phw_data_t      pHwData = &Adapter->sHwData;
  40         PMDS            pMds = &Adapter->Mds;
  41         DESCRIPTOR      TxDes;
  42         PDESCRIPTOR     pTxDes = &TxDes;
  43         u8              *XmitBufAddress;
  44         u16             XmitBufSize, PacketSize, stmp, CurrentSize, FragmentThreshold;
  45         u8              FillIndex, TxDesIndex, FragmentCount, FillCount;
  46         unsigned char   BufferFilled = FALSE, MICAdd = 0;
  47
  48
  49         if (pMds->TxPause)
  50                 return;
  51         if (!hal_driver_init_OK(pHwData))
  52                 return;
  53
  54         //Only one thread can be run here
  55         if (!OS_ATOMIC_INC( Adapter, &pMds->TxThreadCount) == 1)
  56                 goto cleanup;
  57
  58         // Start to fill the data
  59         do {
  60                 FillIndex = pMds->TxFillIndex;
  61                 if (pMds->TxOwner[FillIndex]) { // Is owned by software 0:Yes 1:No
  62 #ifdef _PE_TX_DUMP_
  63                         WBDEBUG(("[Mds_Tx] Tx Owner is H/W.\n"));
  64 #endif
  65                         break;
  66                 }
  67
  68                 XmitBufAddress = pMds->pTxBuffer + (MAX_USB_TX_BUFFER * FillIndex); //Get buffer
  69                 XmitBufSize = 0;
  70                 FillCount = 0;
  71                 do {
  72                         PacketSize = Adapter->sMlmeFrame.len;
  73                         if (!PacketSize)
  74                                 break;
  75
  76                         //For Check the buffer resource
  77                         FragmentThreshold = CURRENT_FRAGMENT_THRESHOLD;
  78                         //931130.5.b
  79                         FragmentCount = PacketSize/FragmentThreshold + 1;
  80                         stmp = PacketSize + FragmentCount*32 + 8;//931130.5.c 8:MIC
  81                         if ((XmitBufSize + stmp) >= MAX_USB_TX_BUFFER) {
  82                                 printk("[Mds_Tx] Excess max tx buffer.\n");
  83                                 break; // buffer is not enough
  84                         }
  85
  86
  87                         //
  88                         // Start transmitting
  89                         //
  90                         BufferFilled = TRUE;
  91
  92                         /* Leaves first u8 intact */
  93                         memset((u8 *)pTxDes + 1, 0, sizeof(DESCRIPTOR) - 1);
  94
  95                         TxDesIndex = pMds->TxDesIndex;//Get the current ID
  96                         pTxDes->Descriptor_ID = TxDesIndex;
  97                         pMds->TxDesFrom[ TxDesIndex ] = 2;//Storing the information of source comming from
  98                         pMds->TxDesIndex++;
  99                         pMds->TxDesIndex %= MAX_USB_TX_DESCRIPTOR;
 100
 101                         MLME_GetNextPacket( Adapter, pTxDes );
 102
 103                         // Copy header. 8byte USB + 24byte 802.11Hdr. Set TxRate, Preamble type
 104                         Mds_HeaderCopy( Adapter, pTxDes, XmitBufAddress );
 105
 106                         // For speed up Key setting
 107                         if (pTxDes->EapFix) {
 108 #ifdef _PE_TX_DUMP_
 109                                 WBDEBUG(("35: EPA 4th frame detected. Size = %d\n", PacketSize));
 110 #endif
 111                                 pHwData->IsKeyPreSet = 1;
 112                         }
 113
 114                         // Copy (fragment) frame body, and set USB, 802.11 hdr flag
 115                         CurrentSize = Mds_BodyCopy(Adapter, pTxDes, XmitBufAddress);
 116
 117                         // Set RTS/CTS and Normal duration field into buffer
 118                         Mds_DurationSet(Adapter, pTxDes, XmitBufAddress);
 119
 120                         //
 121                         // Calculation MIC from buffer which maybe fragment, then fill into temporary address 8 byte
 122                         // 931130.5.e
 123                         if (MICAdd)
 124                                 Mds_MicFill( Adapter, pTxDes, XmitBufAddress );
 125
 126                         //Shift to the next address
 127                         XmitBufSize += CurrentSize;
 128                         XmitBufAddress += CurrentSize;
 129
 130 #ifdef _IBSS_BEACON_SEQ_STICK_
 131                         if ((XmitBufAddress[ DOT_11_DA_OFFSET+8 ] & 0xfc) != MAC_SUBTYPE_MNGMNT_PROBE_REQUEST) // +8 for USB hdr
 132 #endif
 133                                 pMds->TxToggle = TRUE;
 134
 135                         // Get packet to transmit completed, 1:TESTSTA 2:MLME 3: Ndis data
 136                         MLME_SendComplete(Adapter, 0, TRUE);
 137
 138                         // Software TSC count 20060214
 139                         pMds->TxTsc++;
 140                         if (pMds->TxTsc == 0)
 141                                 pMds->TxTsc_2++;
 142
 143                         FillCount++; // 20060928
 144                 } while (HAL_USB_MODE_BURST(pHwData)); // End of multiple MSDU copy loop. FALSE = single TRUE = multiple sending
 145
 146                 // Move to the next one, if necessary
 147                 if (BufferFilled) {
 148                         // size setting
 149                         pMds->TxBufferSize[ FillIndex ] = XmitBufSize;
 150
 151                         // 20060928 set Tx count
 152                         pMds->TxCountInBuffer[FillIndex] = FillCount;
 153
 154                         // Set owner flag
 155                         pMds->TxOwner[FillIndex] = 1;
 156
 157                         pMds->TxFillIndex++;
 158                         pMds->TxFillIndex %= MAX_USB_TX_BUFFER_NUMBER;
 159                         BufferFilled = FALSE;
 160                 } else
 161                         break;
 162
 163                 if (!PacketSize) // No more pk for transmitting
 164                         break;
 165
 166         } while(TRUE);
 167
 168         //
 169         // Start to send by lower module
 170         //
 171         if (!pHwData->IsKeyPreSet)
 172                 Wb35Tx_start(pHwData);
 173
 174  cleanup:
 175         OS_ATOMIC_DEC( Adapter, &pMds->TxThreadCount );
 176 }
 177
 178 void
 179 Mds_SendComplete(PADAPTER Adapter, PT02_DESCRIPTOR pT02)
 180 {
 181         PMDS    pMds = &Adapter->Mds;
 182         phw_data_t      pHwData = &Adapter->sHwData;
 183         u8      PacketId = (u8)pT02->T02_Tx_PktID;
 184         unsigned char   SendOK = TRUE;
 185         u8      RetryCount, TxRate;
 186
 187         if (pT02->T02_IgnoreResult) // Don't care the result
 188                 return;
 189         if (pT02->T02_IsLastMpdu) {
 190                 //TODO: DTO -- get the retry count and fragment count
 191                 // Tx rate
 192                 TxRate = pMds->TxRate[ PacketId ][ 0 ];
 193                 RetryCount = (u8)pT02->T02_MPDU_Cnt;
 194                 if (pT02->value & FLAG_ERROR_TX_MASK) {
 195                         SendOK = FALSE;
 196
 197                         if (pT02->T02_transmit_abort || pT02->T02_out_of_MaxTxMSDULiftTime) {
 198                                 //retry error
 199                                 pHwData->dto_tx_retry_count += (RetryCount+1);
 200                                 //[for tx debug]
 201                                 if (RetryCount<7)
 202                                         pHwData->tx_retry_count[RetryCount] += RetryCount;
 203                                 else
 204                                         pHwData->tx_retry_count[7] += RetryCount;
 205                                 #ifdef _PE_STATE_DUMP_
 206                                 WBDEBUG(("dto_tx_retry_count =%d\n", pHwData->dto_tx_retry_count));
 207                                 #endif
 208                                 MTO_SetTxCount(Adapter, TxRate, RetryCount);
 209                         }
 210                         pHwData->dto_tx_frag_count += (RetryCount+1);
 211
 212                         //[for tx debug]
 213                         if (pT02->T02_transmit_abort_due_to_TBTT)
 214                                 pHwData->tx_TBTT_start_count++;
 215                         if (pT02->T02_transmit_without_encryption_due_to_wep_on_false)
 216                                 pHwData->tx_WepOn_false_count++;
 217                         if (pT02->T02_discard_due_to_null_wep_key)
 218                                 pHwData->tx_Null_key_count++;
 219                 } else {
 220                         if (pT02->T02_effective_transmission_rate)
 221                                 pHwData->tx_ETR_count++;
 222                         MTO_SetTxCount(Adapter, TxRate, RetryCount);
 223                 }
 224
 225                 // Clear send result buffer
 226                 pMds->TxResult[ PacketId ] = 0;
 227         } else
 228                 pMds->TxResult[ PacketId ] |= ((u16)(pT02->value & 0x0ffff));
 229 }
 230
 231 void
 232 Mds_HeaderCopy(PADAPTER Adapter, PDESCRIPTOR pDes, u8 *TargetBuffer)
 233 {
 234         PMDS    pMds = &Adapter->Mds;
 235         u8      *src_buffer = pDes->buffer_address[0];//931130.5.g
 236         PT00_DESCRIPTOR pT00;
 237         PT01_DESCRIPTOR pT01;
 238         u16     stmp;
 239         u8      i, ctmp1, ctmp2, ctmpf;
 240         u16     FragmentThreshold = CURRENT_FRAGMENT_THRESHOLD;
 241
 242
 243         stmp = pDes->buffer_total_size;
 244         //
 245         // Set USB header 8 byte
 246         //
 247         pT00 = (PT00_DESCRIPTOR)TargetBuffer;
 248         TargetBuffer += 4;
 249         pT01 = (PT01_DESCRIPTOR)TargetBuffer;
 250         TargetBuffer += 4;
 251
 252         pT00->value = 0;// Clear
 253         pT01->value = 0;// Clear
 254
 255         pT00->T00_tx_packet_id = pDes->Descriptor_ID;// Set packet ID
 256         pT00->T00_header_length = 24;// Set header length
 257         pT01->T01_retry_abort_ebable = 1;//921013 931130.5.h
 258
 259         // Key ID setup
 260         pT01->T01_wep_id = 0;
 261
 262         FragmentThreshold = DEFAULT_FRAGMENT_THRESHOLD; //Do not fragment
 263         // Copy full data, the 1'st buffer contain all the data 931130.5.j
 264         memcpy( TargetBuffer, src_buffer, DOT_11_MAC_HEADER_SIZE );// Copy header
 265         pDes->buffer_address[0] = src_buffer + DOT_11_MAC_HEADER_SIZE;
 266         pDes->buffer_total_size -= DOT_11_MAC_HEADER_SIZE;
 267         pDes->buffer_size[0] = pDes->buffer_total_size;
 268
 269         // Set fragment threshold
 270         FragmentThreshold -= (DOT_11_MAC_HEADER_SIZE + 4);
 271         pDes->FragmentThreshold = FragmentThreshold;
 272
 273         // Set more frag bit
 274         TargetBuffer[1] |= 0x04;// Set more frag bit
 275
 276         //
 277         // Set tx rate
 278         //
 279         stmp = *(u16 *)(TargetBuffer+30); // 2n alignment address
 280
 281         //Use basic rate
 282         ctmp1 = ctmpf = CURRENT_TX_RATE_FOR_MNG;
 283
 284         pDes->TxRate = ctmp1;
 285         #ifdef _PE_TX_DUMP_
 286         WBDEBUG(("Tx rate =%x\n", ctmp1));
 287         #endif
 288
 289         pT01->T01_modulation_type = (ctmp1%3) ? 0 : 1;
 290
 291         for( i=0; i<2; i++ ) {
 292                 if( i == 1 )
 293                         ctmp1 = ctmpf;
 294
 295                 pMds->TxRate[pDes->Descriptor_ID][i] = ctmp1; // backup the ta rate and fall back rate
 296
 297                 if( ctmp1 == 108) ctmp2 = 7;
 298                 else if( ctmp1 == 96 ) ctmp2 = 6; // Rate convert for USB
 299                 else if( ctmp1 == 72 ) ctmp2 = 5;
 300                 else if( ctmp1 == 48 ) ctmp2 = 4;
 301                 else if( ctmp1 == 36 ) ctmp2 = 3;
 302                 else if( ctmp1 == 24 ) ctmp2 = 2;
 303                 else if( ctmp1 == 18 ) ctmp2 = 1;
 304                 else if( ctmp1 == 12 ) ctmp2 = 0;
 305                 else if( ctmp1 == 22 ) ctmp2 = 3;
 306                 else if( ctmp1 == 11 ) ctmp2 = 2;
 307                 else if( ctmp1 == 4  ) ctmp2 = 1;
 308                 else ctmp2 = 0; // if( ctmp1 == 2  ) or default
 309
 310                 if( i == 0 )
 311                         pT01->T01_transmit_rate = ctmp2;
 312                 else
 313                         pT01->T01_fall_back_rate = ctmp2;
 314         }
 315
 316         //
 317         // Set preamble type
 318         //
 319         if ((pT01->T01_modulation_type == 0) && (pT01->T01_transmit_rate == 0)) // RATE_1M
 320                 pDes->PreambleMode =  WLAN_PREAMBLE_TYPE_LONG;
 321         else
 322                 pDes->PreambleMode =  CURRENT_PREAMBLE_MODE;
 323         pT01->T01_plcp_header_length = pDes->PreambleMode;      // Set preamble
 324
 325 }
 326
 327 // The function return the 4n size of usb pk
 328 u16
 329 Mds_BodyCopy(PADAPTER Adapter, PDESCRIPTOR pDes, u8 *TargetBuffer)
 330 {
 331         PT00_DESCRIPTOR pT00;
 332         PMDS    pMds = &Adapter->Mds;
 333         u8      *buffer;
 334         u8      *src_buffer;
 335         u8      *pctmp;
 336         u16     Size = 0;
 337         u16     SizeLeft, CopySize, CopyLeft, stmp;
 338         u8      buf_index, FragmentCount = 0;
 339
 340
 341         // Copy fragment body
 342         buffer = TargetBuffer; // shift 8B usb + 24B 802.11
 343         SizeLeft = pDes->buffer_total_size;
 344         buf_index = pDes->buffer_start_index;
 345
 346         pT00 = (PT00_DESCRIPTOR)buffer;
 347         while (SizeLeft) {
 348                 pT00 = (PT00_DESCRIPTOR)buffer;
 349                 CopySize = SizeLeft;
 350                 if (SizeLeft > pDes->FragmentThreshold) {
 351                         CopySize = pDes->FragmentThreshold;
 352                         pT00->T00_frame_length = 24 + CopySize;//Set USB length
 353                 } else
 354                         pT00->T00_frame_length = 24 + SizeLeft;//Set USB length
 355
 356                 SizeLeft -= CopySize;
 357
 358                 // 1 Byte operation
 359                 pctmp = (u8 *)( buffer + 8 + DOT_11_SEQUENCE_OFFSET );
 360                 *pctmp &= 0xf0;
 361                 *pctmp |= FragmentCount;//931130.5.m
 362                 if( !FragmentCount )
 363                         pT00->T00_first_mpdu = 1;
 364
 365                 buffer += 32; // 8B usb + 24B 802.11 header
 366                 Size += 32;
 367
 368                 // Copy into buffer
 369                 stmp = CopySize + 3;
 370                 stmp &= ~0x03;//4n Alignment
 371                 Size += stmp;// Current 4n offset of mpdu
 372
 373                 while (CopySize) {
 374                         // Copy body
 375                         src_buffer = pDes->buffer_address[buf_index];
 376                         CopyLeft = CopySize;
 377                         if (CopySize >= pDes->buffer_size[buf_index]) {
 378                                 CopyLeft = pDes->buffer_size[buf_index];
 379
 380                                 // Get the next buffer of descriptor
 381                                 buf_index++;
 382                                 buf_index %= MAX_DESCRIPTOR_BUFFER_INDEX;
 383                         } else {
 384                                 u8      *pctmp = pDes->buffer_address[buf_index];
 385                                 pctmp += CopySize;
 386                                 pDes->buffer_address[buf_index] = pctmp;
 387                                 pDes->buffer_size[buf_index] -= CopySize;
 388                         }
 389
 390                         memcpy(buffer, src_buffer, CopyLeft);
 391                         buffer += CopyLeft;
 392                         CopySize -= CopyLeft;
 393                 }
 394
 395                 // 931130.5.n
 396                 if (pMds->MicAdd) {
 397                         if (!SizeLeft) {
 398                                 pMds->MicWriteAddress[ pMds->MicWriteIndex ] = buffer - pMds->MicAdd;
 399                                 pMds->MicWriteSize[ pMds->MicWriteIndex ] = pMds->MicAdd;
 400                                 pMds->MicAdd = 0;
 401                         }
 402                         else if( SizeLeft < 8 ) //931130.5.p
 403                         {
 404                                 pMds->MicAdd = SizeLeft;
 405                                 pMds->MicWriteAddress[ pMds->MicWriteIndex ] = buffer - ( 8 - SizeLeft );
 406                                 pMds->MicWriteSize[ pMds->MicWriteIndex ] = 8 - SizeLeft;
 407                                 pMds->MicWriteIndex++;
 408                         }
 409                 }
 410
 411                 // Does it need to generate the new header for next mpdu?
 412                 if (SizeLeft) {
 413                         buffer = TargetBuffer + Size; // Get the next 4n start address
 414                         memcpy( buffer, TargetBuffer, 32 );//Copy 8B USB +24B 802.11
 415                         pT00 = (PT00_DESCRIPTOR)buffer;
 416                         pT00->T00_first_mpdu = 0;
 417                 }
 418
 419                 FragmentCount++;
 420         }
 421
 422         pT00->T00_last_mpdu = 1;
 423         pT00->T00_IsLastMpdu = 1;
 424         buffer = (u8 *)pT00 + 8; // +8 for USB hdr
 425         buffer[1] &= ~0x04; // Clear more frag bit of 802.11 frame control
 426         pDes->FragmentCount = FragmentCount; // Update the correct fragment number
 427         return Size;
 428 }
 429
 430
 431 void
 432 Mds_DurationSet(  PADAPTER Adapter,  PDESCRIPTOR pDes,  u8 *buffer )
 433 {
 434         PT00_DESCRIPTOR pT00;
 435         PT01_DESCRIPTOR pT01;
 436         u16     Duration, NextBodyLen, OffsetSize;
 437         u8      Rate, i;
 438         unsigned char   CTS_on = FALSE, RTS_on = FALSE;
 439         PT00_DESCRIPTOR pNextT00;
 440         u16 BodyLen = 0;
 441         unsigned char boGroupAddr = FALSE;
 442
 443
 444         OffsetSize = pDes->FragmentThreshold + 32 + 3;
 445         OffsetSize &= ~0x03;
 446         Rate = pDes->TxRate >> 1;
 447         if (!Rate)
 448                 Rate = 1;
 449
 450         pT00 = (PT00_DESCRIPTOR)buffer;
 451         pT01 = (PT01_DESCRIPTOR)(buffer+4);
 452         pNextT00 = (PT00_DESCRIPTOR)(buffer+OffsetSize);
 453
 454         if( buffer[ DOT_11_DA_OFFSET+8 ] & 0x1 ) // +8 for USB hdr
 455                 boGroupAddr = TRUE;
 456
 457         //========================================
 458         // Set RTS/CTS mechanism
 459         //========================================
 460         if (!boGroupAddr)
 461         {
 462                 //NOTE : If the protection mode is enabled and the MSDU will be fragmented,
 463                 //               the tx rates of MPDUs will all be DSSS rates. So it will not use
 464                 //               CTS-to-self in this case. CTS-To-self will only be used when without
 465                 //               fragmentation. -- 20050112
 466                 BodyLen = (u16)pT00->T00_frame_length;  //include 802.11 header
 467                 BodyLen += 4;   //CRC
 468
 469                 if( BodyLen >= CURRENT_RTS_THRESHOLD )
 470                         RTS_on = TRUE; // Using RTS
 471                 else
 472                 {
 473                         if( pT01->T01_modulation_type ) // Is using OFDM
 474                         {
 475                                 if( CURRENT_PROTECT_MECHANISM ) // Is using protect
 476                                         CTS_on = TRUE; // Using CTS
 477                         }
 478                 }
 479         }
 480
 481         if( RTS_on || CTS_on )
 482         {
 483                 if( pT01->T01_modulation_type) // Is using OFDM
 484                 {
 485                         //CTS duration
 486                         // 2 SIFS + DATA transmit time + 1 ACK
 487                         // ACK Rate : 24 Mega bps
 488                         // ACK frame length = 14 bytes
 489                         Duration = 2*DEFAULT_SIFSTIME +
 490                                            2*PREAMBLE_PLUS_SIGNAL_PLUS_SIGNALEXTENSION +
 491                                            ((BodyLen*8 + 22 + Rate*4 - 1)/(Rate*4))*Tsym +
 492                                            ((112 + 22 + 95)/96)*Tsym;
 493                 }
 494                 else    //DSSS
 495                 {
 496                         //CTS duration
 497                         // 2 SIFS + DATA transmit time + 1 ACK
 498                         // Rate : ?? Mega bps
 499                         // ACK frame length = 14 bytes
 500                         if( pT01->T01_plcp_header_length ) //long preamble
 501                                 Duration = LONG_PREAMBLE_PLUS_PLCPHEADER_TIME*2;
 502                         else
 503                                 Duration = SHORT_PREAMBLE_PLUS_PLCPHEADER_TIME*2;
 504
 505                         Duration += ( ((BodyLen + 14)*8 + Rate-1) / Rate +
 506                                                 DEFAULT_SIFSTIME*2 );
 507                 }
 508
 509                 if( RTS_on )
 510                 {
 511                         if( pT01->T01_modulation_type ) // Is using OFDM
 512                         {
 513                                 //CTS + 1 SIFS + CTS duration
 514                                 //CTS Rate : 24 Mega bps
 515                                 //CTS frame length = 14 bytes
 516                                 Duration += (DEFAULT_SIFSTIME +
 517                                                                 PREAMBLE_PLUS_SIGNAL_PLUS_SIGNALEXTENSION +
 518                                                                 ((112 + 22 + 95)/96)*Tsym);
 519                         }
 520                         else
 521                         {
 522                                 //CTS + 1 SIFS + CTS duration
 523                                 //CTS Rate : ?? Mega bps
 524                                 //CTS frame length = 14 bytes
 525                                 if( pT01->T01_plcp_header_length ) //long preamble
 526                                         Duration += LONG_PREAMBLE_PLUS_PLCPHEADER_TIME;
 527                                 else
 528                                         Duration += SHORT_PREAMBLE_PLUS_PLCPHEADER_TIME;
 529
 530                                 Duration += ( ((112 + Rate-1) / Rate) + DEFAULT_SIFSTIME );
 531                         }
 532                 }
 533
 534                 // Set the value into USB descriptor
 535                 pT01->T01_add_rts = RTS_on ? 1 : 0;
 536                 pT01->T01_add_cts = CTS_on ? 1 : 0;
 537                 pT01->T01_rts_cts_duration = Duration;
 538         }
 539
 540         //=====================================
 541         // Fill the more fragment descriptor
 542         //=====================================
 543         if( boGroupAddr )
 544                 Duration = 0;
 545         else
 546         {
 547                 for( i=pDes->FragmentCount-1; i>0; i-- )
 548                 {
 549                         NextBodyLen = (u16)pNextT00->T00_frame_length;
 550                         NextBodyLen += 4;       //CRC
 551
 552                         if( pT01->T01_modulation_type )
 553                         {
 554                                 //OFDM
 555                                 // data transmit time + 3 SIFS + 2 ACK
 556                                 // Rate : ??Mega bps
 557                                 // ACK frame length = 14 bytes, tx rate = 24M
 558                                 Duration = PREAMBLE_PLUS_SIGNAL_PLUS_SIGNALEXTENSION * 3;
 559                                 Duration += (((NextBodyLen*8 + 22 + Rate*4 - 1)/(Rate*4)) * Tsym +
 560                                                         (((2*14)*8 + 22 + 95)/96)*Tsym +
 561                                                         DEFAULT_SIFSTIME*3);
 562                         }
 563                         else
 564                         {
 565                                 //DSSS
 566                                 // data transmit time + 2 ACK + 3 SIFS
 567                                 // Rate : ??Mega bps
 568                                 // ACK frame length = 14 bytes
 569                                 //TODO :
 570                                 if( pT01->T01_plcp_header_length ) //long preamble
 571                                         Duration = LONG_PREAMBLE_PLUS_PLCPHEADER_TIME*3;
 572                                 else
 573                                         Duration = SHORT_PREAMBLE_PLUS_PLCPHEADER_TIME*3;
 574
 575                                 Duration += ( ((NextBodyLen + (2*14))*8 + Rate-1) / Rate +
 576                                                         DEFAULT_SIFSTIME*3 );
 577                         }
 578
 579                         ((u16 *)buffer)[5] = cpu_to_le16(Duration);// 4 USHOR for skip 8B USB, 2USHORT=FC + Duration
 580
 581                         //----20061009 add by anson's endian
 582                         pNextT00->value = cpu_to_le32(pNextT00->value);
 583                         pT01->value = cpu_to_le32( pT01->value );
 584                         //----end 20061009 add by anson's endian
 585
 586                         buffer += OffsetSize;
 587                         pT01 = (PT01_DESCRIPTOR)(buffer+4);
 588                         if (i != 1)     //The last fragment will not have the next fragment
 589                                 pNextT00 = (PT00_DESCRIPTOR)(buffer+OffsetSize);
 590                 }
 591
 592                 //=====================================
 593                 // Fill the last fragment descriptor
 594                 //=====================================
 595                 if( pT01->T01_modulation_type )
 596                 {
 597                         //OFDM
 598                         // 1 SIFS + 1 ACK
 599                         // Rate : 24 Mega bps
 600                         // ACK frame length = 14 bytes
 601                         Duration = PREAMBLE_PLUS_SIGNAL_PLUS_SIGNALEXTENSION;
 602                         //The Tx rate of ACK use 24M
 603                         Duration += (((112 + 22 + 95)/96)*Tsym + DEFAULT_SIFSTIME );
 604                 }
 605                 else
 606                 {
 607                         // DSSS
 608                         // 1 ACK + 1 SIFS
 609                         // Rate : ?? Mega bps
 610                         // ACK frame length = 14 bytes(112 bits)
 611                         if( pT01->T01_plcp_header_length ) //long preamble
 612                                 Duration = LONG_PREAMBLE_PLUS_PLCPHEADER_TIME;
 613                         else
 614                                 Duration = SHORT_PREAMBLE_PLUS_PLCPHEADER_TIME;
 615
 616                         Duration += ( (112 + Rate-1)/Rate +     DEFAULT_SIFSTIME );
 617                 }
 618         }
 619
 620         ((u16 *)buffer)[5] = cpu_to_le16(Duration);// 4 USHOR for skip 8B USB, 2USHORT=FC + Duration
 621         pT00->value = cpu_to_le32(pT00->value);
 622         pT01->value = cpu_to_le32(pT01->value);
 623         //--end 20061009 add
 624
 625 }
 626
 627 void MDS_EthernetPacketReceive(  PADAPTER Adapter,  PRXLAYER1 pRxLayer1 )
 628 {
 629                 OS_RECEIVE_PACKET_INDICATE( Adapter, pRxLayer1 );
 630 }
 631
 632