drivers/staging/bcm/PHSModule.c

   1 #include "headers.h"
   2
   3 static UINT CreateSFToClassifierRuleMapping(B_UINT16 uiVcid,B_UINT16  uiClsId,S_SERVICEFLOW_TABLE *psServiceFlowTable,S_PHS_RULE *psPhsRule,B_UINT8 u8AssociatedPHSI);
   4
   5 static UINT CreateClassiferToPHSRuleMapping(B_UINT16 uiVcid,B_UINT16  uiClsId,S_SERVICEFLOW_ENTRY *pstServiceFlowEntry,S_PHS_RULE *psPhsRule,B_UINT8 u8AssociatedPHSI);
   6
   7 static UINT CreateClassifierPHSRule(B_UINT16  uiClsId,S_CLASSIFIER_TABLE *psaClassifiertable ,S_PHS_RULE *psPhsRule,E_CLASSIFIER_ENTRY_CONTEXT eClsContext,B_UINT8 u8AssociatedPHSI);
   8
   9 static UINT UpdateClassifierPHSRule(B_UINT16  uiClsId,S_CLASSIFIER_ENTRY *pstClassifierEntry,S_CLASSIFIER_TABLE *psaClassifiertable ,S_PHS_RULE *psPhsRule,B_UINT8 u8AssociatedPHSI);
  10
  11 static BOOLEAN ValidatePHSRuleComplete(S_PHS_RULE *psPhsRule);
  12
  13 static BOOLEAN DerefPhsRule(B_UINT16  uiClsId,S_CLASSIFIER_TABLE *psaClassifiertable,S_PHS_RULE *pstPhsRule);
  14
  15 static UINT GetClassifierEntry(S_CLASSIFIER_TABLE *pstClassifierTable,B_UINT32 uiClsid,E_CLASSIFIER_ENTRY_CONTEXT eClsContext, S_CLASSIFIER_ENTRY **ppstClassifierEntry);
  16
  17 static UINT GetPhsRuleEntry(S_CLASSIFIER_TABLE *pstClassifierTable,B_UINT32 uiPHSI,E_CLASSIFIER_ENTRY_CONTEXT eClsContext,S_PHS_RULE **ppstPhsRule);
  18
  19 static void free_phs_serviceflow_rules(S_SERVICEFLOW_TABLE *psServiceFlowRulesTable);
  20
  21 static int phs_compress(S_PHS_RULE   *phs_members,unsigned char *in_buf,
  22                                                 unsigned char *out_buf,unsigned int *header_size,UINT *new_header_size );
  23
  24
  25 static int verify_suppress_phsf(unsigned char *in_buffer,unsigned char *out_buffer,
  26                                                                 unsigned char *phsf,unsigned char *phsm,unsigned int phss,unsigned int phsv,UINT *new_header_size );
  27
  28 static int phs_decompress(unsigned char *in_buf,unsigned char *out_buf,\
  29                                                   S_PHS_RULE   *phs_rules,UINT *header_size);
  30
  31
  32 static ULONG PhsCompress(void* pvContext,
  33                                   B_UINT16 uiVcid,
  34                                   B_UINT16 uiClsId,
  35                                   void *pvInputBuffer,
  36                                   void *pvOutputBuffer,
  37                                   UINT *pOldHeaderSize,
  38                                   UINT *pNewHeaderSize );
  39
  40 static ULONG PhsDeCompress(void* pvContext,
  41                                   B_UINT16 uiVcid,
  42                                   void *pvInputBuffer,
  43                                   void *pvOutputBuffer,
  44                                   UINT *pInHeaderSize,
  45                                   UINT *pOutHeaderSize);
  46
  47
  48
  49 #define IN
  50 #define OUT
  51
  52 /*
  53 Function:                               PHSTransmit
  54
  55 Description:                    This routine handle PHS(Payload Header Suppression for Tx path.
  56                                         It extracts a fragment of the NDIS_PACKET containing the header
  57                                         to be suppressed.It then supresses the header by invoking PHS exported compress routine.
  58                                         The header data after supression is copied back to the NDIS_PACKET.
  59
  60
  61 Input parameters:               IN PMINI_ADAPTER Adapter         - Miniport Adapter Context
  62                                                 IN Packet                               - NDIS packet containing data to be transmitted
  63                                                 IN USHORT Vcid        - vcid pertaining to connection on which the packet is being sent.Used to
  64                                                                                         identify PHS rule to be applied.
  65                                                 B_UINT16 uiClassifierRuleID - Classifier Rule ID
  66                                                 BOOLEAN bHeaderSuppressionEnabled - indicates if header suprression is enabled for SF.
  67
  68 Return:                                 STATUS_SUCCESS - If the send was successful.
  69                                                 Other          - If an error occured.
  70 */
  71
  72 int PHSTransmit(PMINI_ADAPTER Adapter,
  73                                          struct sk_buff **pPacket,
  74                                          USHORT Vcid,
  75                                          B_UINT16 uiClassifierRuleID,
  76                                          BOOLEAN bHeaderSuppressionEnabled,
  77                                          UINT *PacketLen,
  78                                          UCHAR bEthCSSupport)
  79 {
  80
  81         //PHS Sepcific
  82         UINT    unPHSPktHdrBytesCopied = 0;
  83         UINT    unPhsOldHdrSize = 0;
  84         UINT    unPHSNewPktHeaderLen = 0;
  85         /* Pointer to PHS IN Hdr Buffer */
  86         PUCHAR pucPHSPktHdrInBuf =
  87                                 Adapter->stPhsTxContextInfo.ucaHdrSupressionInBuf;
  88         /* Pointer to PHS OUT Hdr Buffer */
  89         PUCHAR  pucPHSPktHdrOutBuf =
  90                                         Adapter->stPhsTxContextInfo.ucaHdrSupressionOutBuf;
  91         UINT       usPacketType;
  92         UINT       BytesToRemove=0;
  93         BOOLEAN  bPHSI = 0;
  94         LONG ulPhsStatus = 0;
  95         UINT    numBytesCompressed = 0;
  96         struct sk_buff *newPacket = NULL;
  97         struct sk_buff *Packet = *pPacket;
  98
  99         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL, "In PHSTransmit");
 100
 101         if(!bEthCSSupport)
 102                 BytesToRemove=ETH_HLEN;
 103         /*
 104                 Accumulate the header upto the size we support supression
 105                 from NDIS packet
 106         */
 107
 108         usPacketType=((struct ethhdr *)(Packet->data))->h_proto;
 109
 110
 111         pucPHSPktHdrInBuf = Packet->data + BytesToRemove;
 112         //considering data after ethernet header
 113         if((*PacketLen - BytesToRemove) < MAX_PHS_LENGTHS)
 114         {
 115
 116                 unPHSPktHdrBytesCopied = (*PacketLen - BytesToRemove);
 117         }
 118         else
 119         {
 120                 unPHSPktHdrBytesCopied = MAX_PHS_LENGTHS;
 121         }
 122
 123         if( (unPHSPktHdrBytesCopied > 0 ) &&
 124                 (unPHSPktHdrBytesCopied <= MAX_PHS_LENGTHS))
 125         {
 126
 127
 128                 // Step 2 Supress Header using PHS and fill into intermediate ucaPHSPktHdrOutBuf.
 129         // Suppress only if IP Header and PHS Enabled For the Service Flow
 130                 if(((usPacketType == ETHERNET_FRAMETYPE_IPV4) ||
 131                         (usPacketType == ETHERNET_FRAMETYPE_IPV6)) &&
 132                         (bHeaderSuppressionEnabled))
 133                 {
 134                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nTrying to PHS Compress Using Classifier rule 0x%X",uiClassifierRuleID);
 135
 136
 137                                 unPHSNewPktHeaderLen = unPHSPktHdrBytesCopied;
 138                                 ulPhsStatus = PhsCompress(&Adapter->stBCMPhsContext,
 139                                         Vcid,
 140                                         uiClassifierRuleID,
 141                                         pucPHSPktHdrInBuf,
 142                                         pucPHSPktHdrOutBuf,
 143                                         &unPhsOldHdrSize,
 144                                         &unPHSNewPktHeaderLen);
 145                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nPHS Old header Size : %d New Header Size  %d\n",unPhsOldHdrSize,unPHSNewPktHeaderLen);
 146
 147                                 if(unPHSNewPktHeaderLen == unPhsOldHdrSize)
 148                                 {
 149                                         if(  ulPhsStatus == STATUS_PHS_COMPRESSED)
 150                                                         bPHSI = *pucPHSPktHdrOutBuf;
 151                                         ulPhsStatus = STATUS_PHS_NOCOMPRESSION;
 152                                 }
 153
 154                                 if(  ulPhsStatus == STATUS_PHS_COMPRESSED)
 155                                 {
 156                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"PHS Sending packet Compressed");
 157
 158                                         if(skb_cloned(Packet))
 159                                         {
 160                                                 newPacket = skb_copy(Packet, GFP_ATOMIC);
 161
 162                                                 if(newPacket == NULL)
 163                                                         return STATUS_FAILURE;
 164
 165                                                 dev_kfree_skb(Packet);
 166                                                 *pPacket = Packet = newPacket;
 167                                                 pucPHSPktHdrInBuf = Packet->data  + BytesToRemove;
 168                                         }
 169
 170                                         numBytesCompressed = unPhsOldHdrSize - (unPHSNewPktHeaderLen+PHSI_LEN);
 171
 172                                         memcpy(pucPHSPktHdrInBuf + numBytesCompressed, pucPHSPktHdrOutBuf, unPHSNewPktHeaderLen + PHSI_LEN);
 173                                         memcpy(Packet->data + numBytesCompressed, Packet->data, BytesToRemove);
 174                                         skb_pull(Packet, numBytesCompressed);
 175
 176                                         return STATUS_SUCCESS;
 177                                 }
 178
 179                                 else
 180                                 {
 181                                         //if one byte headroom is not available, increase it through skb_cow
 182                                         if(!(skb_headroom(Packet) > 0))
 183                                         {
 184                                                 if(skb_cow(Packet, 1))
 185                                                 {
 186                                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "SKB Cow Failed\n");
 187                                                         return STATUS_FAILURE;
 188                                                 }
 189                                         }
 190                                         skb_push(Packet, 1);
 191
 192                                         // CAUTION: The MAC Header is getting corrupted here for IP CS - can be saved by copying 14 Bytes.  not needed .... hence corrupting it.
 193                                         *(Packet->data + BytesToRemove) = bPHSI;
 194                                         return STATUS_SUCCESS;
 195                         }
 196                 }
 197                 else
 198                 {
 199                         if(!bHeaderSuppressionEnabled)
 200                         {
 201                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nHeader Suppression Disabled For SF: No PHS\n");
 202                         }
 203
 204                         return STATUS_SUCCESS;
 205                 }
 206         }
 207
 208         //BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"PHSTransmit : Dumping data packet After PHS");
 209         return STATUS_SUCCESS;
 210 }
 211
 212 int PHSRecieve(PMINI_ADAPTER Adapter,
 213                                         USHORT usVcid,
 214                                         struct sk_buff *packet,
 215                                         UINT *punPacketLen,
 216                                         UCHAR *pucEthernetHdr,
 217                                         UINT    bHeaderSuppressionEnabled)
 218 {
 219         u32   nStandardPktHdrLen                        = 0;
 220         u32   nTotalsupressedPktHdrBytes  = 0;
 221         int     ulPhsStatus             = 0;
 222         PUCHAR pucInBuff = NULL ;
 223         UINT TotalBytesAdded = 0;
 224         if(!bHeaderSuppressionEnabled)
 225         {
 226                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"\nPhs Disabled for incoming packet");
 227                 return ulPhsStatus;
 228         }
 229
 230         pucInBuff = packet->data;
 231
 232         //Restore  PHS suppressed header
 233         nStandardPktHdrLen = packet->len;
 234         ulPhsStatus = PhsDeCompress(&Adapter->stBCMPhsContext,
 235                 usVcid,
 236                 pucInBuff,
 237                 Adapter->ucaPHSPktRestoreBuf,
 238                 &nTotalsupressedPktHdrBytes,
 239                 &nStandardPktHdrLen);
 240
 241         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"\nSupressed PktHdrLen : 0x%x Restored PktHdrLen : 0x%x",
 242                                         nTotalsupressedPktHdrBytes,nStandardPktHdrLen);
 243
 244         if(ulPhsStatus != STATUS_PHS_COMPRESSED)
 245         {
 246                 skb_pull(packet, 1);
 247                 return STATUS_SUCCESS;
 248         }
 249         else
 250         {
 251                 TotalBytesAdded = nStandardPktHdrLen - nTotalsupressedPktHdrBytes - PHSI_LEN;
 252                 if(TotalBytesAdded)
 253                 {
 254                         if(skb_headroom(packet) >= (SKB_RESERVE_ETHERNET_HEADER + TotalBytesAdded))
 255                                 skb_push(packet, TotalBytesAdded);
 256                         else
 257                         {
 258                                 if(skb_cow(packet, skb_headroom(packet) + TotalBytesAdded))
 259                                 {
 260                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "cow failed in receive\n");
 261                                         return STATUS_FAILURE;
 262                                 }
 263
 264                                 skb_push(packet, TotalBytesAdded);
 265                         }
 266                 }
 267
 268                 memcpy(packet->data, Adapter->ucaPHSPktRestoreBuf, nStandardPktHdrLen);
 269         }
 270
 271         return STATUS_SUCCESS;
 272 }
 273
 274 void DumpFullPacket(UCHAR *pBuf,UINT nPktLen)
 275 {
 276         PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
 277     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,"Dumping Data Packet");
 278     BCM_DEBUG_PRINT_BUFFER(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,pBuf,nPktLen);
 279 }
 280
 281 //-----------------------------------------------------------------------------
 282 // Procedure:   phs_init
 283 //
 284 // Description: This routine is responsible for allocating memory for classifier and
 285 // PHS rules.
 286 //
 287 // Arguments:
 288 // pPhsdeviceExtension - ptr to Device extension containing PHS Classifier rules and PHS Rules , RX, TX buffer etc
 289 //
 290 // Returns:
 291 // TRUE(1)      -If allocation of memory was success full.
 292 // FALSE        -If allocation of memory fails.
 293 //-----------------------------------------------------------------------------
 294 int phs_init(PPHS_DEVICE_EXTENSION pPhsdeviceExtension,PMINI_ADAPTER Adapter)
 295 {
 296         int i;
 297         S_SERVICEFLOW_TABLE *pstServiceFlowTable;
 298     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "\nPHS:phs_init function ");
 299
 300         if(pPhsdeviceExtension->pstServiceFlowPhsRulesTable)
 301                 return -EINVAL;
 302
 303         pPhsdeviceExtension->pstServiceFlowPhsRulesTable =
 304                 kzalloc(sizeof(S_SERVICEFLOW_TABLE), GFP_KERNEL);
 305
 306     if(!pPhsdeviceExtension->pstServiceFlowPhsRulesTable)
 307         {
 308                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "\nAllocation ServiceFlowPhsRulesTable failed");
 309                 return -ENOMEM;
 310         }
 311
 312         pstServiceFlowTable = pPhsdeviceExtension->pstServiceFlowPhsRulesTable;
 313         for(i=0;i<MAX_SERVICEFLOWS;i++)
 314         {
 315                 S_SERVICEFLOW_ENTRY sServiceFlow = pstServiceFlowTable->stSFList[i];
 316                 sServiceFlow.pstClassifierTable = kzalloc(sizeof(S_CLASSIFIER_TABLE), GFP_KERNEL);
 317                 if(!sServiceFlow.pstClassifierTable)
 318                 {
 319                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "\nAllocation failed");
 320                         free_phs_serviceflow_rules(pPhsdeviceExtension->
 321                 pstServiceFlowPhsRulesTable);
 322                         pPhsdeviceExtension->pstServiceFlowPhsRulesTable = NULL;
 323                         return -ENOMEM;
 324                 }
 325         }
 326
 327         pPhsdeviceExtension->CompressedTxBuffer = kmalloc(PHS_BUFFER_SIZE, GFP_KERNEL);
 328
 329     if(pPhsdeviceExtension->CompressedTxBuffer == NULL)
 330         {
 331                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "\nAllocation failed");
 332                 free_phs_serviceflow_rules(pPhsdeviceExtension->pstServiceFlowPhsRulesTable);
 333                 pPhsdeviceExtension->pstServiceFlowPhsRulesTable = NULL;
 334                 return -ENOMEM;
 335         }
 336
 337     pPhsdeviceExtension->UnCompressedRxBuffer = kmalloc(PHS_BUFFER_SIZE, GFP_KERNEL);
 338         if(pPhsdeviceExtension->UnCompressedRxBuffer == NULL)
 339         {
 340                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "\nAllocation failed");
 341                 kfree(pPhsdeviceExtension->CompressedTxBuffer);
 342                 free_phs_serviceflow_rules(pPhsdeviceExtension->pstServiceFlowPhsRulesTable);
 343                 pPhsdeviceExtension->pstServiceFlowPhsRulesTable = NULL;
 344                 return -ENOMEM;
 345         }
 346
 347
 348
 349         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "\n phs_init Successfull");
 350         return STATUS_SUCCESS;
 351 }
 352
 353
 354 int PhsCleanup(IN PPHS_DEVICE_EXTENSION pPHSDeviceExt)
 355 {
 356         if(pPHSDeviceExt->pstServiceFlowPhsRulesTable)
 357         {
 358                 free_phs_serviceflow_rules(pPHSDeviceExt->pstServiceFlowPhsRulesTable);
 359                 pPHSDeviceExt->pstServiceFlowPhsRulesTable = NULL;
 360         }
 361
 362         kfree(pPHSDeviceExt->CompressedTxBuffer);
 363         pPHSDeviceExt->CompressedTxBuffer = NULL;
 364
 365         kfree(pPHSDeviceExt->UnCompressedRxBuffer);
 366         pPHSDeviceExt->UnCompressedRxBuffer = NULL;
 367
 368         return 0;
 369 }
 370
 371
 372
 373 //PHS functions
 374 /*++
 375 PhsUpdateClassifierRule
 376
 377 Routine Description:
 378     Exported function to add or modify a PHS Rule.
 379
 380 Arguments:
 381         IN void* pvContext - PHS Driver Specific Context
 382         IN B_UINT16 uiVcid    - The Service Flow ID for which the PHS rule applies
 383         IN B_UINT16  uiClsId   - The Classifier ID within the Service Flow for which the PHS rule applies.
 384         IN S_PHS_RULE *psPhsRule - The PHS Rule strcuture to be added to the PHS Rule table.
 385
 386 Return Value:
 387
 388     0 if successful,
 389     >0 Error.
 390
 391 --*/
 392 ULONG PhsUpdateClassifierRule(IN void* pvContext,
 393                                                                 IN B_UINT16  uiVcid ,
 394                                                                 IN B_UINT16  uiClsId   ,
 395                                                                 IN S_PHS_RULE *psPhsRule,
 396                                                                 IN B_UINT8  u8AssociatedPHSI)
 397 {
 398         ULONG lStatus =0;
 399         UINT nSFIndex =0 ;
 400         S_SERVICEFLOW_ENTRY *pstServiceFlowEntry = NULL;
 401     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
 402
 403
 404
 405         PPHS_DEVICE_EXTENSION pDeviceExtension= (PPHS_DEVICE_EXTENSION)pvContext;
 406
 407         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL,"PHS With Corr2 Changes \n");
 408
 409         if(pDeviceExtension == NULL)
 410         {
 411                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL,"Invalid Device Extension\n");
 412                 return ERR_PHS_INVALID_DEVICE_EXETENSION;
 413         }
 414
 415
 416         if(u8AssociatedPHSI == 0)
 417         {
 418                 return ERR_PHS_INVALID_PHS_RULE;
 419         }
 420
 421         /* Retrieve the SFID Entry Index for requested Service Flow */
 422
 423         nSFIndex = GetServiceFlowEntry(pDeviceExtension->pstServiceFlowPhsRulesTable,
 424                         uiVcid,&pstServiceFlowEntry);
 425
 426     if(nSFIndex == PHS_INVALID_TABLE_INDEX)
 427         {
 428                 /* This is a new SF. Create a mapping entry for this */
 429                 lStatus = CreateSFToClassifierRuleMapping(uiVcid, uiClsId,
 430                       pDeviceExtension->pstServiceFlowPhsRulesTable, psPhsRule, u8AssociatedPHSI);
 431                 return lStatus;
 432         }
 433
 434         /* SF already Exists Add PHS Rule to existing SF */
 435         lStatus = CreateClassiferToPHSRuleMapping(uiVcid, uiClsId,
 436                   pstServiceFlowEntry, psPhsRule, u8AssociatedPHSI);
 437
 438     return lStatus;
 439 }
 440
 441 /*++
 442 PhsDeletePHSRule
 443
 444 Routine Description:
 445    Deletes the specified phs Rule within Vcid
 446
 447 Arguments:
 448         IN void* pvContext - PHS Driver Specific Context
 449         IN B_UINT16  uiVcid    - The Service Flow ID for which the PHS rule applies
 450         IN B_UINT8  u8PHSI   - the PHS Index identifying PHS rule to be deleted.
 451
 452 Return Value:
 453
 454     0 if successful,
 455     >0 Error.
 456
 457 --*/
 458
 459 ULONG PhsDeletePHSRule(IN void* pvContext,IN B_UINT16 uiVcid,IN B_UINT8 u8PHSI)
 460 {
 461         ULONG lStatus =0;
 462         UINT nSFIndex =0, nClsidIndex =0 ;
 463         S_SERVICEFLOW_ENTRY *pstServiceFlowEntry = NULL;
 464         S_CLASSIFIER_TABLE *pstClassifierRulesTable = NULL;
 465     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
 466
 467
 468         PPHS_DEVICE_EXTENSION pDeviceExtension= (PPHS_DEVICE_EXTENSION)pvContext;
 469
 470         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "======>\n");
 471
 472         if(pDeviceExtension)
 473         {
 474
 475                 //Retrieve the SFID Entry Index for requested Service Flow
 476                 nSFIndex = GetServiceFlowEntry(pDeviceExtension
 477                       ->pstServiceFlowPhsRulesTable,uiVcid,&pstServiceFlowEntry);
 478
 479        if(nSFIndex == PHS_INVALID_TABLE_INDEX)
 480                 {
 481                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "SFID Match Failed\n");
 482                         return ERR_SF_MATCH_FAIL;
 483                 }
 484
 485                 pstClassifierRulesTable=pstServiceFlowEntry->pstClassifierTable;
 486                 if(pstClassifierRulesTable)
 487                 {
 488                         for(nClsidIndex=0;nClsidIndex<MAX_PHSRULE_PER_SF;nClsidIndex++)
 489                         {
 490                                 if(pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex].bUsed && pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex].pstPhsRule)
 491                                 {
 492                                         if(pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex].pstPhsRule->u8PHSI == u8PHSI)                                     {
 493                                                 if(pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex].pstPhsRule->u8RefCnt)
 494                                                         pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex].pstPhsRule->u8RefCnt--;
 495                                                 if(0 == pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex].pstPhsRule->u8RefCnt)
 496                                                         kfree(pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex].pstPhsRule);
 497                                                 memset(&pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex], 0,
 498                                                         sizeof(S_CLASSIFIER_ENTRY));
 499                                         }
 500                                 }
 501                         }
 502                 }
 503
 504         }
 505         return lStatus;
 506 }
 507
 508 /*++
 509 PhsDeleteClassifierRule
 510
 511 Routine Description:
 512     Exported function to Delete a PHS Rule for the SFID,CLSID Pair.
 513
 514 Arguments:
 515         IN void* pvContext - PHS Driver Specific Context
 516         IN B_UINT16  uiVcid    - The Service Flow ID for which the PHS rule applies
 517         IN B_UINT16  uiClsId   - The Classifier ID within the Service Flow for which the PHS rule applies.
 518
 519 Return Value:
 520
 521     0 if successful,
 522     >0 Error.
 523
 524 --*/
 525 ULONG PhsDeleteClassifierRule(IN void* pvContext,IN B_UINT16 uiVcid ,IN B_UINT16  uiClsId)
 526 {
 527         ULONG lStatus =0;
 528         UINT nSFIndex =0, nClsidIndex =0 ;
 529         S_SERVICEFLOW_ENTRY *pstServiceFlowEntry = NULL;
 530         S_CLASSIFIER_ENTRY *pstClassifierEntry = NULL;
 531     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
 532         PPHS_DEVICE_EXTENSION pDeviceExtension= (PPHS_DEVICE_EXTENSION)pvContext;
 533
 534         if(pDeviceExtension)
 535         {
 536                 //Retrieve the SFID Entry Index for requested Service Flow
 537                 nSFIndex = GetServiceFlowEntry(pDeviceExtension
 538                       ->pstServiceFlowPhsRulesTable, uiVcid, &pstServiceFlowEntry);
 539                 if(nSFIndex == PHS_INVALID_TABLE_INDEX)
 540                 {
 541                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL,"SFID Match Failed\n");
 542                         return ERR_SF_MATCH_FAIL;
 543                 }
 544
 545                 nClsidIndex = GetClassifierEntry(pstServiceFlowEntry->pstClassifierTable,
 546                   uiClsId, eActiveClassifierRuleContext, &pstClassifierEntry);
 547                 if((nClsidIndex != PHS_INVALID_TABLE_INDEX) && (!pstClassifierEntry->bUnclassifiedPHSRule))
 548                 {
 549                         if(pstClassifierEntry->pstPhsRule)
 550                         {
 551                                 if(pstClassifierEntry->pstPhsRule->u8RefCnt)
 552                                 pstClassifierEntry->pstPhsRule->u8RefCnt--;
 553                                 if(0==pstClassifierEntry->pstPhsRule->u8RefCnt)
 554                                         kfree(pstClassifierEntry->pstPhsRule);
 555
 556                         }
 557                         memset(pstClassifierEntry, 0, sizeof(S_CLASSIFIER_ENTRY));
 558                 }
 559
 560                 nClsidIndex = GetClassifierEntry(pstServiceFlowEntry->pstClassifierTable,
 561                     uiClsId,eOldClassifierRuleContext,&pstClassifierEntry);
 562
 563            if((nClsidIndex != PHS_INVALID_TABLE_INDEX) && (!pstClassifierEntry->bUnclassifiedPHSRule))
 564                 {
 565                         kfree(pstClassifierEntry->pstPhsRule);
 566                         memset(pstClassifierEntry, 0, sizeof(S_CLASSIFIER_ENTRY));
 567                 }
 568         }
 569         return lStatus;
 570 }
 571
 572 /*++
 573 PhsDeleteSFRules
 574
 575 Routine Description:
 576     Exported function to Delete a all PHS Rules for the SFID.
 577
 578 Arguments:
 579         IN void* pvContext - PHS Driver Specific Context
 580         IN B_UINT16 uiVcid   - The Service Flow ID for which the PHS rules need to be deleted
 581
 582 Return Value:
 583
 584     0 if successful,
 585     >0 Error.
 586
 587 --*/
 588 ULONG PhsDeleteSFRules(IN void* pvContext,IN B_UINT16 uiVcid)
 589 {
 590
 591         ULONG lStatus =0;
 592         UINT nSFIndex =0, nClsidIndex =0  ;
 593         S_SERVICEFLOW_ENTRY *pstServiceFlowEntry = NULL;
 594         S_CLASSIFIER_TABLE *pstClassifierRulesTable = NULL;
 595     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
 596         PPHS_DEVICE_EXTENSION pDeviceExtension= (PPHS_DEVICE_EXTENSION)pvContext;
 597     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL,"====> \n");
 598
 599         if(pDeviceExtension)
 600         {
 601                 //Retrieve the SFID Entry Index for requested Service Flow
 602                 nSFIndex = GetServiceFlowEntry(pDeviceExtension->pstServiceFlowPhsRulesTable,
 603                                   uiVcid,&pstServiceFlowEntry);
 604                 if(nSFIndex == PHS_INVALID_TABLE_INDEX)
 605                 {
 606                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "SFID Match Failed\n");
 607                         return ERR_SF_MATCH_FAIL;
 608                 }
 609
 610                 pstClassifierRulesTable=pstServiceFlowEntry->pstClassifierTable;
 611                 if(pstClassifierRulesTable)
 612                 {
 613                         for(nClsidIndex=0;nClsidIndex<MAX_PHSRULE_PER_SF;nClsidIndex++)
 614                         {
 615                                 if(pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex].pstPhsRule)
 616                                 {
 617                                         if(pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex]
 618                                                         .pstPhsRule->u8RefCnt)
 619                                                 pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex]
 620                                                                                     .pstPhsRule->u8RefCnt--;
 621                                         if(0==pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex]
 622                                                           .pstPhsRule->u8RefCnt)
 623                                                 kfree(pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex].pstPhsRule);
 624                                             pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex]
 625                                         .pstPhsRule = NULL;
 626                                 }
 627                                 memset(&pstClassifierRulesTable->stActivePhsRulesList[nClsidIndex], 0, sizeof(S_CLASSIFIER_ENTRY));
 628                                 if(pstClassifierRulesTable->stOldPhsRulesList[nClsidIndex].pstPhsRule)
 629                                 {
 630                                         if(pstClassifierRulesTable->stOldPhsRulesList[nClsidIndex]
 631                                         .pstPhsRule->u8RefCnt)
 632                                                 pstClassifierRulesTable->stOldPhsRulesList[nClsidIndex]
 633                                                                   .pstPhsRule->u8RefCnt--;
 634                                         if(0 == pstClassifierRulesTable->stOldPhsRulesList[nClsidIndex]
 635                                         .pstPhsRule->u8RefCnt)
 636                                                 kfree(pstClassifierRulesTable
 637                                                       ->stOldPhsRulesList[nClsidIndex].pstPhsRule);
 638                                         pstClassifierRulesTable->stOldPhsRulesList[nClsidIndex]
 639                               .pstPhsRule = NULL;
 640                                 }
 641                                 memset(&pstClassifierRulesTable->stOldPhsRulesList[nClsidIndex], 0, sizeof(S_CLASSIFIER_ENTRY));
 642                         }
 643                 }
 644                 pstServiceFlowEntry->bUsed = FALSE;
 645                 pstServiceFlowEntry->uiVcid = 0;
 646
 647         }
 648
 649         return lStatus;
 650 }
 651
 652
 653 /*++
 654 PhsCompress
 655
 656 Routine Description:
 657     Exported function to compress the data using PHS.
 658
 659 Arguments:
 660         IN void* pvContext - PHS Driver Specific Context.
 661         IN B_UINT16 uiVcid    - The Service Flow ID to which current packet header compression applies.
 662         IN UINT  uiClsId   - The Classifier ID to which current packet header compression applies.
 663         IN void *pvInputBuffer - The Input buffer containg packet header data
 664         IN void *pvOutputBuffer - The output buffer returned by this function after PHS
 665         IN UINT *pOldHeaderSize  - The actual size of the header before PHS
 666         IN UINT *pNewHeaderSize - The new size of the header after applying PHS
 667
 668 Return Value:
 669
 670     0 if successful,
 671     >0 Error.
 672
 673 --*/
 674 ULONG PhsCompress(IN void* pvContext,
 675                                   IN B_UINT16 uiVcid,
 676                                   IN B_UINT16 uiClsId,
 677                                   IN void *pvInputBuffer,
 678                                   OUT void *pvOutputBuffer,
 679                                   OUT UINT *pOldHeaderSize,
 680                                   OUT UINT *pNewHeaderSize )
 681 {
 682         UINT nSFIndex =0, nClsidIndex =0  ;
 683         S_SERVICEFLOW_ENTRY *pstServiceFlowEntry = NULL;
 684         S_CLASSIFIER_ENTRY *pstClassifierEntry = NULL;
 685         S_PHS_RULE *pstPhsRule = NULL;
 686         ULONG lStatus =0;
 687     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
 688
 689
 690
 691         PPHS_DEVICE_EXTENSION pDeviceExtension= (PPHS_DEVICE_EXTENSION)pvContext;
 692
 693
 694         if(pDeviceExtension == NULL)
 695         {
 696                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"Invalid Device Extension\n");
 697                 lStatus =  STATUS_PHS_NOCOMPRESSION ;
 698                 return lStatus;
 699
 700         }
 701
 702         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"Suppressing header \n");
 703
 704
 705         //Retrieve the SFID Entry Index for requested Service Flow
 706         nSFIndex = GetServiceFlowEntry(pDeviceExtension->pstServiceFlowPhsRulesTable,
 707                           uiVcid,&pstServiceFlowEntry);
 708         if(nSFIndex == PHS_INVALID_TABLE_INDEX)
 709         {
 710                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"SFID Match Failed\n");
 711                 lStatus =  STATUS_PHS_NOCOMPRESSION ;
 712                 return lStatus;
 713         }
 714
 715         nClsidIndex = GetClassifierEntry(pstServiceFlowEntry->pstClassifierTable,
 716                 uiClsId,eActiveClassifierRuleContext,&pstClassifierEntry);
 717
 718     if(nClsidIndex == PHS_INVALID_TABLE_INDEX)
 719         {
 720                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"No PHS Rule Defined For Classifier\n");
 721                 lStatus =  STATUS_PHS_NOCOMPRESSION ;
 722                 return lStatus;
 723         }
 724
 725
 726         //get rule from SF id,Cls ID pair and proceed
 727         pstPhsRule =  pstClassifierEntry->pstPhsRule;
 728
 729         if(!ValidatePHSRuleComplete(pstPhsRule))
 730         {
 731                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL,"PHS Rule Defined For Classifier But Not Complete\n");
 732                 lStatus =  STATUS_PHS_NOCOMPRESSION ;
 733                 return lStatus;
 734         }
 735
 736         //Compress Packet
 737         lStatus = phs_compress(pstPhsRule,(PUCHAR)pvInputBuffer,
 738               (PUCHAR)pvOutputBuffer, pOldHeaderSize,pNewHeaderSize);
 739
 740         if(lStatus == STATUS_PHS_COMPRESSED)
 741         {
 742                 pstPhsRule->PHSModifiedBytes += *pOldHeaderSize - *pNewHeaderSize - 1;
 743                 pstPhsRule->PHSModifiedNumPackets++;
 744         }
 745         else
 746                 pstPhsRule->PHSErrorNumPackets++;
 747
 748         return lStatus;
 749 }
 750
 751 /*++
 752 PhsDeCompress
 753
 754 Routine Description:
 755     Exported function to restore the packet header in Rx path.
 756
 757 Arguments:
 758         IN void* pvContext - PHS Driver Specific Context.
 759         IN B_UINT16 uiVcid    - The Service Flow ID to which current packet header restoration applies.
 760         IN  void *pvInputBuffer - The Input buffer containg suppressed packet header data
 761         OUT void *pvOutputBuffer - The output buffer returned by this function after restoration
 762         OUT UINT *pHeaderSize   - The packet header size after restoration is returned in this parameter.
 763
 764 Return Value:
 765
 766     0 if successful,
 767     >0 Error.
 768
 769 --*/
 770 ULONG PhsDeCompress(IN void* pvContext,
 771                                   IN B_UINT16 uiVcid,
 772                                   IN void *pvInputBuffer,
 773                                   OUT void *pvOutputBuffer,
 774                                   OUT UINT *pInHeaderSize,
 775                                   OUT UINT *pOutHeaderSize )
 776 {
 777         UINT nSFIndex =0, nPhsRuleIndex =0 ;
 778         S_SERVICEFLOW_ENTRY *pstServiceFlowEntry = NULL;
 779         S_PHS_RULE *pstPhsRule = NULL;
 780         UINT phsi;
 781     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
 782         PPHS_DEVICE_EXTENSION pDeviceExtension=
 783         (PPHS_DEVICE_EXTENSION)pvContext;
 784
 785         *pInHeaderSize = 0;
 786
 787         if(pDeviceExtension == NULL)
 788         {
 789                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"Invalid Device Extension\n");
 790                 return ERR_PHS_INVALID_DEVICE_EXETENSION;
 791         }
 792
 793         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"Restoring header \n");
 794
 795         phsi = *((unsigned char *)(pvInputBuffer));
 796     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"PHSI To Be Used For restore : %x \n",phsi);
 797     if(phsi == UNCOMPRESSED_PACKET )
 798         {
 799                 return STATUS_PHS_NOCOMPRESSION;
 800         }
 801
 802         //Retrieve the SFID Entry Index for requested Service Flow
 803         nSFIndex = GetServiceFlowEntry(pDeviceExtension->pstServiceFlowPhsRulesTable,
 804               uiVcid,&pstServiceFlowEntry);
 805         if(nSFIndex == PHS_INVALID_TABLE_INDEX)
 806         {
 807                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"SFID Match Failed During Lookup\n");
 808                 return ERR_SF_MATCH_FAIL;
 809         }
 810
 811         nPhsRuleIndex = GetPhsRuleEntry(pstServiceFlowEntry->pstClassifierTable,phsi,
 812           eActiveClassifierRuleContext,&pstPhsRule);
 813         if(nPhsRuleIndex == PHS_INVALID_TABLE_INDEX)
 814         {
 815                 //Phs Rule does not exist in  active rules table. Lets try in the old rules table.
 816                 nPhsRuleIndex = GetPhsRuleEntry(pstServiceFlowEntry->pstClassifierTable,
 817                       phsi,eOldClassifierRuleContext,&pstPhsRule);
 818                 if(nPhsRuleIndex == PHS_INVALID_TABLE_INDEX)
 819                 {
 820                         return ERR_PHSRULE_MATCH_FAIL;
 821                 }
 822
 823         }
 824
 825         *pInHeaderSize = phs_decompress((PUCHAR)pvInputBuffer,
 826             (PUCHAR)pvOutputBuffer,pstPhsRule,pOutHeaderSize);
 827
 828         pstPhsRule->PHSModifiedBytes += *pOutHeaderSize - *pInHeaderSize - 1;
 829
 830         pstPhsRule->PHSModifiedNumPackets++;
 831         return STATUS_PHS_COMPRESSED;
 832 }
 833
 834
 835 //-----------------------------------------------------------------------------
 836 // Procedure:   free_phs_serviceflow_rules
 837 //
 838 // Description: This routine is responsible for freeing memory allocated for PHS rules.
 839 //
 840 // Arguments:
 841 // rules        - ptr to S_SERVICEFLOW_TABLE structure.
 842 //
 843 // Returns:
 844 // Does not return any value.
 845 //-----------------------------------------------------------------------------
 846
 847 static void free_phs_serviceflow_rules(S_SERVICEFLOW_TABLE *psServiceFlowRulesTable)
 848 {
 849         int i,j;
 850     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
 851
 852         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "=======>\n");
 853     if(psServiceFlowRulesTable)
 854         {
 855                 for(i=0;i<MAX_SERVICEFLOWS;i++)
 856                 {
 857                         S_SERVICEFLOW_ENTRY stServiceFlowEntry =
 858                 psServiceFlowRulesTable->stSFList[i];
 859                         S_CLASSIFIER_TABLE *pstClassifierRulesTable =
 860                 stServiceFlowEntry.pstClassifierTable;
 861
 862                         if(pstClassifierRulesTable)
 863                         {
 864                                 for(j=0;j<MAX_PHSRULE_PER_SF;j++)
 865                                 {
 866                                         if(pstClassifierRulesTable->stActivePhsRulesList[j].pstPhsRule)
 867                                         {
 868                                                 if(pstClassifierRulesTable->stActivePhsRulesList[j].pstPhsRule
 869                                                                                         ->u8RefCnt)
 870                                                         pstClassifierRulesTable->stActivePhsRulesList[j].pstPhsRule
 871                                                                                                         ->u8RefCnt--;
 872                                                 if(0==pstClassifierRulesTable->stActivePhsRulesList[j].pstPhsRule
 873                                                                 ->u8RefCnt)
 874                                                         kfree(pstClassifierRulesTable->stActivePhsRulesList[j].pstPhsRule);
 875                                                 pstClassifierRulesTable->stActivePhsRulesList[j].pstPhsRule = NULL;
 876                                         }
 877                                         if(pstClassifierRulesTable->stOldPhsRulesList[j].pstPhsRule)
 878                                         {
 879                                                 if(pstClassifierRulesTable->stOldPhsRulesList[j].pstPhsRule
 880                                                                 ->u8RefCnt)
 881                                                         pstClassifierRulesTable->stOldPhsRulesList[j].pstPhsRule
 882                                                                                                   ->u8RefCnt--;
 883                                                 if(0==pstClassifierRulesTable->stOldPhsRulesList[j].pstPhsRule
 884                                                                       ->u8RefCnt)
 885                                                         kfree(pstClassifierRulesTable->stOldPhsRulesList[j].pstPhsRule);
 886                                                 pstClassifierRulesTable->stOldPhsRulesList[j].pstPhsRule = NULL;
 887                                         }
 888                                 }
 889                                 kfree(pstClassifierRulesTable);
 890                             stServiceFlowEntry.pstClassifierTable = pstClassifierRulesTable = NULL;
 891                         }
 892                 }
 893         }
 894
 895     kfree(psServiceFlowRulesTable);
 896     psServiceFlowRulesTable = NULL;
 897 }
 898
 899
 900
 901 static BOOLEAN ValidatePHSRuleComplete(IN S_PHS_RULE *psPhsRule)
 902 {
 903         if(psPhsRule)
 904         {
 905                 if(!psPhsRule->u8PHSI)
 906                 {
 907                         // PHSI is not valid
 908                         return FALSE;
 909                 }
 910
 911                 if(!psPhsRule->u8PHSS)
 912                 {
 913                         //PHSS Is Undefined
 914                         return FALSE;
 915                 }
 916
 917                 //Check if PHSF is defines for the PHS Rule
 918                 if(!psPhsRule->u8PHSFLength) // If any part of PHSF is valid then Rule contains valid PHSF
 919                 {
 920                         return FALSE;
 921                 }
 922                 return TRUE;
 923         }
 924         else
 925         {
 926                 return FALSE;
 927         }
 928 }
 929
 930 UINT GetServiceFlowEntry(IN S_SERVICEFLOW_TABLE *psServiceFlowTable,
 931     IN B_UINT16 uiVcid,S_SERVICEFLOW_ENTRY **ppstServiceFlowEntry)
 932 {
 933         int  i;
 934         for(i=0;i<MAX_SERVICEFLOWS;i++)
 935         {
 936                 if(psServiceFlowTable->stSFList[i].bUsed)
 937                 {
 938                         if(psServiceFlowTable->stSFList[i].uiVcid == uiVcid)
 939                         {
 940                                 *ppstServiceFlowEntry = &psServiceFlowTable->stSFList[i];
 941                                 return i;
 942                         }
 943                 }
 944         }
 945
 946         *ppstServiceFlowEntry = NULL;
 947         return PHS_INVALID_TABLE_INDEX;
 948 }
 949
 950
 951 UINT GetClassifierEntry(IN S_CLASSIFIER_TABLE *pstClassifierTable,
 952         IN B_UINT32 uiClsid,E_CLASSIFIER_ENTRY_CONTEXT eClsContext,
 953         OUT S_CLASSIFIER_ENTRY **ppstClassifierEntry)
 954 {
 955         int  i;
 956         S_CLASSIFIER_ENTRY *psClassifierRules = NULL;
 957         for(i=0;i<MAX_PHSRULE_PER_SF;i++)
 958         {
 959
 960                 if(eClsContext == eActiveClassifierRuleContext)
 961                 {
 962                         psClassifierRules = &pstClassifierTable->stActivePhsRulesList[i];
 963                 }
 964                 else
 965                 {
 966                         psClassifierRules = &pstClassifierTable->stOldPhsRulesList[i];
 967                 }
 968
 969                 if(psClassifierRules->bUsed)
 970                 {
 971                         if(psClassifierRules->uiClassifierRuleId == uiClsid)
 972                         {
 973                                 *ppstClassifierEntry = psClassifierRules;
 974                                 return i;
 975                         }
 976                 }
 977
 978         }
 979
 980         *ppstClassifierEntry = NULL;
 981         return PHS_INVALID_TABLE_INDEX;
 982 }
 983
 984 static UINT GetPhsRuleEntry(IN S_CLASSIFIER_TABLE *pstClassifierTable,
 985                             IN B_UINT32 uiPHSI,E_CLASSIFIER_ENTRY_CONTEXT eClsContext,
 986                             OUT S_PHS_RULE **ppstPhsRule)
 987 {
 988         int  i;
 989         S_CLASSIFIER_ENTRY *pstClassifierRule = NULL;
 990         for(i=0;i<MAX_PHSRULE_PER_SF;i++)
 991         {
 992                 if(eClsContext == eActiveClassifierRuleContext)
 993                 {
 994                         pstClassifierRule = &pstClassifierTable->stActivePhsRulesList[i];
 995                 }
 996                 else
 997                 {
 998                         pstClassifierRule = &pstClassifierTable->stOldPhsRulesList[i];
 999                 }
1000                 if(pstClassifierRule->bUsed)
1001                 {
1002                         if(pstClassifierRule->u8PHSI == uiPHSI)
1003                         {
1004                                 *ppstPhsRule = pstClassifierRule->pstPhsRule;
1005                                 return i;
1006                         }
1007                 }
1008
1009         }
1010
1011         *ppstPhsRule = NULL;
1012         return PHS_INVALID_TABLE_INDEX;
1013 }
1014
1015 UINT CreateSFToClassifierRuleMapping(IN B_UINT16 uiVcid,IN B_UINT16  uiClsId,
1016                       IN S_SERVICEFLOW_TABLE *psServiceFlowTable,S_PHS_RULE *psPhsRule,
1017                       B_UINT8 u8AssociatedPHSI)
1018 {
1019
1020     S_CLASSIFIER_TABLE *psaClassifiertable = NULL;
1021         UINT uiStatus = 0;
1022         int iSfIndex;
1023         BOOLEAN bFreeEntryFound =FALSE;
1024         //Check for a free entry in SFID table
1025         for(iSfIndex=0;iSfIndex < MAX_SERVICEFLOWS;iSfIndex++)
1026         {
1027                 if(!psServiceFlowTable->stSFList[iSfIndex].bUsed)
1028                 {
1029                         bFreeEntryFound = TRUE;
1030                         break;
1031                 }
1032         }
1033
1034         if(!bFreeEntryFound)
1035                 return ERR_SFTABLE_FULL;
1036
1037
1038         psaClassifiertable = psServiceFlowTable->stSFList[iSfIndex].pstClassifierTable;
1039         uiStatus = CreateClassifierPHSRule(uiClsId,psaClassifiertable,psPhsRule,
1040                               eActiveClassifierRuleContext,u8AssociatedPHSI);
1041         if(uiStatus == PHS_SUCCESS)
1042         {
1043                 //Add entry at free index to the SF
1044                 psServiceFlowTable->stSFList[iSfIndex].bUsed = TRUE;
1045                 psServiceFlowTable->stSFList[iSfIndex].uiVcid = uiVcid;
1046         }
1047
1048         return uiStatus;
1049
1050 }
1051
1052 UINT CreateClassiferToPHSRuleMapping(IN B_UINT16 uiVcid,
1053             IN B_UINT16  uiClsId,IN S_SERVICEFLOW_ENTRY *pstServiceFlowEntry,
1054               S_PHS_RULE *psPhsRule,B_UINT8 u8AssociatedPHSI)
1055 {
1056         S_CLASSIFIER_ENTRY *pstClassifierEntry = NULL;
1057         UINT uiStatus =PHS_SUCCESS;
1058         UINT nClassifierIndex = 0;
1059         S_CLASSIFIER_TABLE *psaClassifiertable = NULL;
1060     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
1061     psaClassifiertable = pstServiceFlowEntry->pstClassifierTable;
1062
1063         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "==>");
1064
1065         /* Check if the supplied Classifier already exists */
1066         nClassifierIndex =GetClassifierEntry(
1067                     pstServiceFlowEntry->pstClassifierTable,uiClsId,
1068                     eActiveClassifierRuleContext,&pstClassifierEntry);
1069         if(nClassifierIndex == PHS_INVALID_TABLE_INDEX)
1070         {
1071                 /*
1072                     The Classifier doesn't exist. So its a new classifier being added.
1073                      Add new entry to associate PHS Rule to the Classifier
1074                 */
1075
1076                 uiStatus = CreateClassifierPHSRule(uiClsId,psaClassifiertable,
1077                     psPhsRule,eActiveClassifierRuleContext,u8AssociatedPHSI);
1078                 return uiStatus;
1079         }
1080
1081         /*
1082           The Classifier exists.The PHS Rule for this classifier
1083           is being modified
1084           */
1085         if(pstClassifierEntry->u8PHSI == psPhsRule->u8PHSI)
1086         {
1087                 if(pstClassifierEntry->pstPhsRule == NULL)
1088                         return ERR_PHS_INVALID_PHS_RULE;
1089
1090                 /*
1091                     This rule already exists if any fields are changed for this PHS
1092                     rule update them.
1093                  */
1094                  /* If any part of PHSF is valid then we update PHSF */
1095                 if(psPhsRule->u8PHSFLength)
1096                 {
1097                         //update PHSF
1098                         memcpy(pstClassifierEntry->pstPhsRule->u8PHSF,
1099                             psPhsRule->u8PHSF , MAX_PHS_LENGTHS);
1100                 }
1101                 if(psPhsRule->u8PHSFLength)
1102                 {
1103                         //update PHSFLen
1104                         pstClassifierEntry->pstPhsRule->u8PHSFLength =
1105                             psPhsRule->u8PHSFLength;
1106                 }
1107                 if(psPhsRule->u8PHSMLength)
1108                 {
1109                         //update PHSM
1110                         memcpy(pstClassifierEntry->pstPhsRule->u8PHSM,
1111                             psPhsRule->u8PHSM, MAX_PHS_LENGTHS);
1112                 }
1113                 if(psPhsRule->u8PHSMLength)
1114                 {
1115                         //update PHSM Len
1116                         pstClassifierEntry->pstPhsRule->u8PHSMLength =
1117                             psPhsRule->u8PHSMLength;
1118                 }
1119                 if(psPhsRule->u8PHSS)
1120                 {
1121                         //update PHSS
1122                         pstClassifierEntry->pstPhsRule->u8PHSS = psPhsRule->u8PHSS;
1123                 }
1124
1125                 //update PHSV
1126                 pstClassifierEntry->pstPhsRule->u8PHSV = psPhsRule->u8PHSV;
1127
1128         }
1129         else
1130         {
1131                 /*
1132                   A new rule is being set for this classifier.
1133                 */
1134                 uiStatus=UpdateClassifierPHSRule( uiClsId,  pstClassifierEntry,
1135                       psaClassifiertable,  psPhsRule, u8AssociatedPHSI);
1136         }
1137
1138
1139
1140         return uiStatus;
1141 }
1142
1143 static UINT CreateClassifierPHSRule(IN B_UINT16  uiClsId,
1144     S_CLASSIFIER_TABLE *psaClassifiertable ,S_PHS_RULE *psPhsRule,
1145     E_CLASSIFIER_ENTRY_CONTEXT eClsContext,B_UINT8 u8AssociatedPHSI)
1146 {
1147         UINT iClassifierIndex = 0;
1148         BOOLEAN bFreeEntryFound = FALSE;
1149         S_CLASSIFIER_ENTRY *psClassifierRules = NULL;
1150         UINT nStatus = PHS_SUCCESS;
1151     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
1152         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL,"Inside CreateClassifierPHSRule");
1153     if(psaClassifiertable == NULL)
1154         {
1155                 return ERR_INVALID_CLASSIFIERTABLE_FOR_SF;
1156         }
1157
1158         if(eClsContext == eOldClassifierRuleContext)
1159         {
1160                 /* If An Old Entry for this classifier ID already exists in the
1161                     old rules table replace it. */
1162
1163                 iClassifierIndex =
1164                 GetClassifierEntry(psaClassifiertable, uiClsId,
1165                             eClsContext,&psClassifierRules);
1166                 if(iClassifierIndex != PHS_INVALID_TABLE_INDEX)
1167                 {
1168                         /*
1169                             The Classifier already exists in the old rules table
1170                         Lets replace the old classifier with the new one.
1171                         */
1172                         bFreeEntryFound = TRUE;
1173                 }
1174         }
1175
1176         if(!bFreeEntryFound)
1177         {
1178                 /*
1179                   Continue to search for a free location to add the rule
1180                 */
1181                 for(iClassifierIndex = 0; iClassifierIndex <
1182             MAX_PHSRULE_PER_SF; iClassifierIndex++)
1183                 {
1184                         if(eClsContext == eActiveClassifierRuleContext)
1185                         {
1186                                 psClassifierRules =
1187               &psaClassifiertable->stActivePhsRulesList[iClassifierIndex];
1188                         }
1189                         else
1190                         {
1191                                 psClassifierRules =
1192                 &psaClassifiertable->stOldPhsRulesList[iClassifierIndex];
1193                         }
1194
1195                         if(!psClassifierRules->bUsed)
1196                         {
1197                                 bFreeEntryFound = TRUE;
1198                                 break;
1199                         }
1200                 }
1201         }
1202
1203         if(!bFreeEntryFound)
1204         {
1205                 if(eClsContext == eActiveClassifierRuleContext)
1206                 {
1207                         return ERR_CLSASSIFIER_TABLE_FULL;
1208                 }
1209                 else
1210                 {
1211                         //Lets replace the oldest rule if we are looking in old Rule table
1212                         if(psaClassifiertable->uiOldestPhsRuleIndex >=
1213                 MAX_PHSRULE_PER_SF)
1214                         {
1215                                 psaClassifiertable->uiOldestPhsRuleIndex =0;
1216                         }
1217
1218                         iClassifierIndex = psaClassifiertable->uiOldestPhsRuleIndex;
1219                         psClassifierRules =
1220               &psaClassifiertable->stOldPhsRulesList[iClassifierIndex];
1221
1222           (psaClassifiertable->uiOldestPhsRuleIndex)++;
1223                 }
1224         }
1225
1226         if(eClsContext == eOldClassifierRuleContext)
1227         {
1228                 if(psClassifierRules->pstPhsRule == NULL)
1229                 {
1230                         psClassifierRules->pstPhsRule = kmalloc(sizeof(S_PHS_RULE),GFP_KERNEL);
1231
1232           if(NULL == psClassifierRules->pstPhsRule)
1233                                 return ERR_PHSRULE_MEMALLOC_FAIL;
1234                 }
1235
1236                 psClassifierRules->bUsed = TRUE;
1237                 psClassifierRules->uiClassifierRuleId = uiClsId;
1238                 psClassifierRules->u8PHSI = psPhsRule->u8PHSI;
1239                 psClassifierRules->bUnclassifiedPHSRule = psPhsRule->bUnclassifiedPHSRule;
1240
1241         /* Update The PHS rule */
1242                 memcpy(psClassifierRules->pstPhsRule,
1243                     psPhsRule, sizeof(S_PHS_RULE));
1244         }
1245         else
1246         {
1247                 nStatus = UpdateClassifierPHSRule(uiClsId,psClassifierRules,
1248             psaClassifiertable,psPhsRule,u8AssociatedPHSI);
1249         }
1250         return nStatus;
1251 }
1252
1253
1254 static UINT UpdateClassifierPHSRule(IN B_UINT16  uiClsId,
1255       IN S_CLASSIFIER_ENTRY *pstClassifierEntry,
1256       S_CLASSIFIER_TABLE *psaClassifiertable ,S_PHS_RULE *psPhsRule,
1257       B_UINT8 u8AssociatedPHSI)
1258 {
1259         S_PHS_RULE *pstAddPhsRule = NULL;
1260         UINT              nPhsRuleIndex = 0;
1261         BOOLEAN       bPHSRuleOrphaned = FALSE;
1262     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
1263         psPhsRule->u8RefCnt =0;
1264
1265         /* Step 1 Deref Any Exisiting PHS Rule in this classifier Entry*/
1266         bPHSRuleOrphaned = DerefPhsRule( uiClsId, psaClassifiertable,
1267             pstClassifierEntry->pstPhsRule);
1268
1269         //Step 2 Search if there is a PHS Rule with u8AssociatedPHSI in Classifier table for this SF
1270         nPhsRuleIndex =GetPhsRuleEntry(psaClassifiertable,u8AssociatedPHSI,
1271             eActiveClassifierRuleContext, &pstAddPhsRule);
1272         if(PHS_INVALID_TABLE_INDEX == nPhsRuleIndex)
1273         {
1274                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "\nAdding New PHSRuleEntry For Classifier");
1275
1276                 if(psPhsRule->u8PHSI == 0)
1277                 {
1278                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "\nError PHSI is Zero\n");
1279                         return ERR_PHS_INVALID_PHS_RULE;
1280                 }
1281                 //Step 2.a PHS Rule Does Not Exist .Create New PHS Rule for uiClsId
1282                 if(FALSE == bPHSRuleOrphaned)
1283                 {
1284                         pstClassifierEntry->pstPhsRule = kmalloc(sizeof(S_PHS_RULE), GFP_KERNEL);
1285                         if(NULL == pstClassifierEntry->pstPhsRule)
1286                         {
1287                                 return ERR_PHSRULE_MEMALLOC_FAIL;
1288                         }
1289                 }
1290                 memcpy(pstClassifierEntry->pstPhsRule, psPhsRule, sizeof(S_PHS_RULE));
1291
1292         }
1293         else
1294         {
1295                 //Step 2.b PHS Rule  Exists Tie uiClsId with the existing PHS Rule
1296                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_DISPATCH, DBG_LVL_ALL, "\nTying Classifier to Existing PHS Rule");
1297                 if(bPHSRuleOrphaned)
1298                 {
1299                         kfree(pstClassifierEntry->pstPhsRule);
1300                         pstClassifierEntry->pstPhsRule = NULL;
1301                 }
1302                 pstClassifierEntry->pstPhsRule = pstAddPhsRule;
1303
1304         }
1305         pstClassifierEntry->bUsed = TRUE;
1306         pstClassifierEntry->u8PHSI = pstClassifierEntry->pstPhsRule->u8PHSI;
1307         pstClassifierEntry->uiClassifierRuleId = uiClsId;
1308         pstClassifierEntry->pstPhsRule->u8RefCnt++;
1309         pstClassifierEntry->bUnclassifiedPHSRule = pstClassifierEntry->pstPhsRule->bUnclassifiedPHSRule;
1310
1311         return PHS_SUCCESS;
1312
1313 }
1314
1315 static BOOLEAN DerefPhsRule(IN B_UINT16  uiClsId,S_CLASSIFIER_TABLE *psaClassifiertable,S_PHS_RULE *pstPhsRule)
1316 {
1317         if(pstPhsRule==NULL)
1318                 return FALSE;
1319         if(pstPhsRule->u8RefCnt)
1320                 pstPhsRule->u8RefCnt--;
1321         if(0==pstPhsRule->u8RefCnt)
1322         {
1323                 /*if(pstPhsRule->u8PHSI)
1324                 //Store the currently active rule into the old rules list
1325                 CreateClassifierPHSRule(uiClsId,psaClassifiertable,pstPhsRule,eOldClassifierRuleContext,pstPhsRule->u8PHSI);*/
1326                 return TRUE;
1327         }
1328         else
1329         {
1330                 return FALSE;
1331         }
1332 }
1333
1334 void DumpPhsRules(PPHS_DEVICE_EXTENSION pDeviceExtension)
1335 {
1336         int i,j,k,l;
1337     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
1338     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "\n Dumping PHS Rules : \n");
1339         for(i=0;i<MAX_SERVICEFLOWS;i++)
1340         {
1341                 S_SERVICEFLOW_ENTRY stServFlowEntry =
1342                                 pDeviceExtension->pstServiceFlowPhsRulesTable->stSFList[i];
1343                 if(stServFlowEntry.bUsed)
1344                 {
1345                         for(j=0;j<MAX_PHSRULE_PER_SF;j++)
1346                         {
1347                                 for(l=0;l<2;l++)
1348                                 {
1349                                         S_CLASSIFIER_ENTRY stClsEntry;
1350                                         if(l==0)
1351                                         {
1352                                                 stClsEntry = stServFlowEntry.pstClassifierTable->stActivePhsRulesList[j];
1353                                                 if(stClsEntry.bUsed)
1354                                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n Active PHS Rule : \n");
1355                                         }
1356                                         else
1357                                         {
1358                                                 stClsEntry = stServFlowEntry.pstClassifierTable->stOldPhsRulesList[j];
1359                                                 if(stClsEntry.bUsed)
1360                                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n Old PHS Rule : \n");
1361                                         }
1362                                         if(stClsEntry.bUsed)
1363                                         {
1364
1365                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "\n VCID  : %#X",stServFlowEntry.uiVcid);
1366                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n ClassifierID  : %#X",stClsEntry.uiClassifierRuleId);
1367                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n PHSRuleID  : %#X",stClsEntry.u8PHSI);
1368                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n****************PHS Rule********************\n");
1369                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n PHSI  : %#X",stClsEntry.pstPhsRule->u8PHSI);
1370                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n PHSFLength : %#X ",stClsEntry.pstPhsRule->u8PHSFLength);
1371                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n PHSF : ");
1372                                                 for(k=0;k<stClsEntry.pstPhsRule->u8PHSFLength;k++)
1373                                                 {
1374                                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "%#X  ",stClsEntry.pstPhsRule->u8PHSF[k]);
1375                                                 }
1376                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n PHSMLength  : %#X",stClsEntry.pstPhsRule->u8PHSMLength);
1377                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n PHSM :");
1378                                                 for(k=0;k<stClsEntry.pstPhsRule->u8PHSMLength;k++)
1379                                                 {
1380                                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "%#X  ",stClsEntry.pstPhsRule->u8PHSM[k]);
1381                                                 }
1382                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n PHSS : %#X ",stClsEntry.pstPhsRule->u8PHSS);
1383                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, (DBG_LVL_ALL|DBG_NO_FUNC_PRINT), "\n PHSV  : %#X",stClsEntry.pstPhsRule->u8PHSV);
1384                                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "\n********************************************\n");
1385                                         }
1386                                 }
1387                         }
1388                 }
1389         }
1390 }
1391
1392
1393 //-----------------------------------------------------------------------------
1394 // Procedure:   phs_decompress
1395 //
1396 // Description: This routine restores the static fields within the packet.
1397 //
1398 // Arguments:
1399 //      in_buf                  - ptr to incoming packet buffer.
1400 //      out_buf                 - ptr to output buffer where the suppressed header is copied.
1401 //      decomp_phs_rules - ptr to PHS rule.
1402 //      header_size             - ptr to field which holds the phss or phsf_length.
1403 //
1404 // Returns:
1405 //      size -The number of bytes of dynamic fields present with in the incoming packet
1406 //                      header.
1407 //      0       -If PHS rule is NULL.If PHSI is 0 indicateing packet as uncompressed.
1408 //-----------------------------------------------------------------------------
1409
1410 int phs_decompress(unsigned char *in_buf,unsigned char *out_buf,
1411  S_PHS_RULE   *decomp_phs_rules,UINT *header_size)
1412 {
1413         int phss,size=0;
1414          S_PHS_RULE   *tmp_memb;
1415         int bit,i=0;
1416         unsigned char *phsf,*phsm;
1417         int in_buf_len = *header_size-1;
1418     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
1419         in_buf++;
1420     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"====>\n");
1421         *header_size = 0;
1422
1423         if((decomp_phs_rules == NULL ))
1424                 return 0;
1425
1426
1427         tmp_memb = decomp_phs_rules;
1428         //BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"\nDECOMP:In phs_decompress PHSI 1  %d",phsi));
1429         //*header_size = tmp_memb->u8PHSFLength;
1430         phss         = tmp_memb->u8PHSS;
1431         phsf         = tmp_memb->u8PHSF;
1432         phsm         = tmp_memb->u8PHSM;
1433
1434         if(phss > MAX_PHS_LENGTHS)
1435                 phss = MAX_PHS_LENGTHS;
1436         //BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"\nDECOMP:In phs_decompress PHSI  %d phss %d index %d",phsi,phss,index));
1437         while((phss > 0) && (size < in_buf_len))
1438         {
1439                 bit =  ((*phsm << i)& SUPPRESS);
1440
1441                 if(bit == SUPPRESS)
1442                 {
1443                         *out_buf = *phsf;
1444                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"\nDECOMP:In phss  %d phsf %d ouput %d",
1445               phss,*phsf,*out_buf);
1446                 }
1447                 else
1448                 {
1449                         *out_buf = *in_buf;
1450                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_RECIEVE,DBG_LVL_ALL,"\nDECOMP:In phss  %d input %d ouput %d",
1451             phss,*in_buf,*out_buf);
1452                         in_buf++;
1453                         size++;
1454                 }
1455                 out_buf++;
1456                 phsf++;
1457                 phss--;
1458                 i++;
1459                 *header_size=*header_size + 1;
1460
1461                 if(i > MAX_NO_BIT)
1462                 {
1463                         i=0;
1464                         phsm++;
1465                 }
1466         }
1467         return size;
1468 }
1469
1470
1471
1472
1473 //-----------------------------------------------------------------------------
1474 // Procedure:   phs_compress
1475 //
1476 // Description: This routine suppresses the static fields within the packet.Before
1477 // that it will verify the fields to be suppressed with the corresponding fields in the
1478 // phsf. For verification it checks the phsv field of PHS rule. If set and verification
1479 // succeeds it suppresses the field.If any one static field is found different none of
1480 // the static fields are suppressed then the packet is sent as uncompressed packet with
1481 // phsi=0.
1482 //
1483 // Arguments:
1484 //      phs_rule - ptr to PHS rule.
1485 //      in_buf          - ptr to incoming packet buffer.
1486 //      out_buf         - ptr to output buffer where the suppressed header is copied.
1487 //      header_size     - ptr to field which holds the phss.
1488 //
1489 // Returns:
1490 //      size-The number of bytes copied into the output buffer i.e dynamic fields
1491 //      0       -If PHS rule is NULL.If PHSV field is not set.If the verification fails.
1492 //-----------------------------------------------------------------------------
1493 static int phs_compress(S_PHS_RULE  *phs_rule,unsigned char *in_buf
1494                         ,unsigned char *out_buf,UINT *header_size,UINT *new_header_size)
1495 {
1496         unsigned char *old_addr = out_buf;
1497         int supress = 0;
1498     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
1499     if(phs_rule == NULL)
1500         {
1501                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nphs_compress(): phs_rule null!");
1502                 *out_buf = ZERO_PHSI;
1503                 return STATUS_PHS_NOCOMPRESSION;
1504         }
1505
1506
1507         if(phs_rule->u8PHSS <= *new_header_size)
1508         {
1509                 *header_size = phs_rule->u8PHSS;
1510         }
1511         else
1512         {
1513                 *header_size = *new_header_size;
1514         }
1515         //To copy PHSI
1516         out_buf++;
1517         supress = verify_suppress_phsf(in_buf,out_buf,phs_rule->u8PHSF,
1518         phs_rule->u8PHSM, phs_rule->u8PHSS, phs_rule->u8PHSV,new_header_size);
1519
1520         if(supress == STATUS_PHS_COMPRESSED)
1521         {
1522                 *old_addr = (unsigned char)phs_rule->u8PHSI;
1523                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nCOMP:In phs_compress phsi %d",phs_rule->u8PHSI);
1524         }
1525         else
1526         {
1527                 *old_addr = ZERO_PHSI;
1528                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nCOMP:In phs_compress PHSV Verification failed");
1529         }
1530         return supress;
1531 }
1532
1533
1534 //-----------------------------------------------------------------------------
1535 // Procedure:   verify_suppress_phsf
1536 //
1537 // Description: This routine verifies the fields of the packet and if all the
1538 // static fields are equal it adds the phsi of that PHS rule.If any static
1539 // field differs it woun't suppress any field.
1540 //
1541 // Arguments:
1542 // rules_set    - ptr to classifier_rules.
1543 // in_buffer    - ptr to incoming packet buffer.
1544 // out_buffer   - ptr to output buffer where the suppressed header is copied.
1545 // phsf                 - ptr to phsf.
1546 // phsm                 - ptr to phsm.
1547 // phss                 - variable holding phss.
1548 //
1549 // Returns:
1550 //      size-The number of bytes copied into the output buffer i.e dynamic fields.
1551 //      0       -Packet has failed the verification.
1552 //-----------------------------------------------------------------------------
1553
1554 static int verify_suppress_phsf(unsigned char *in_buffer,unsigned char *out_buffer,
1555                                 unsigned char *phsf,unsigned char *phsm,unsigned int phss,
1556                                 unsigned int phsv,UINT* new_header_size)
1557 {
1558         unsigned int size=0;
1559         int bit,i=0;
1560     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
1561     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nCOMP:In verify_phsf PHSM - 0x%X",*phsm);
1562
1563
1564         if(phss>(*new_header_size))
1565         {
1566                 phss=*new_header_size;
1567         }
1568         while(phss > 0)
1569         {
1570                 bit = ((*phsm << i)& SUPPRESS);
1571                 if(bit == SUPPRESS)
1572                 {
1573
1574                         if(*in_buffer != *phsf)
1575                         {
1576                                 if(phsv == VERIFY)
1577                                 {
1578                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nCOMP:In verify_phsf failed for field  %d buf  %d phsf %d",phss,*in_buffer,*phsf);
1579                                         return STATUS_PHS_NOCOMPRESSION;
1580                                 }
1581                         }
1582                         else
1583                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nCOMP:In verify_phsf success for field  %d buf  %d phsf %d",phss,*in_buffer,*phsf);
1584                 }
1585                 else
1586                 {
1587                         *out_buffer = *in_buffer;
1588                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nCOMP:In copying_header input %d  out %d",*in_buffer,*out_buffer);
1589                         out_buffer++;
1590                         size++;
1591                 }
1592                 in_buffer++;
1593                 phsf++;
1594                 phss--;
1595                 i++;
1596                 if(i > MAX_NO_BIT)
1597                 {
1598                         i=0;
1599                         phsm++;
1600                 }
1601         }
1602         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, PHS_SEND, DBG_LVL_ALL,"\nCOMP:In verify_phsf success");
1603         *new_header_size = size;
1604         return STATUS_PHS_COMPRESSED;
1605 }
1606
1607
1608
1609
1610
1611