drivers/staging/vt6655/dpc.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * File: dpc.c
  20  *
  21  * Purpose: handle dpc rx functions
  22  *
  23  * Author: Lyndon Chen
  24  *
  25  * Date: May 20, 2003
  26  *
  27  * Functions:
  28  *      device_receive_frame - Rcv 802.11 frame function
  29  *      s_bAPModeRxCtl- AP Rcv frame filer Ctl.
  30  *      s_bAPModeRxData- AP Rcv data frame handle
  31  *      s_bHandleRxEncryption- Rcv decrypted data via on-fly
  32  *      s_bHostWepRxEncryption- Rcv encrypted data via host
  33  *      s_byGetRateIdx- get rate index
  34  *      s_vGetDASA- get data offset
  35  *      s_vProcessRxMACHeader- Rcv 802.11 and translate to 802.3
  36  *
  37  * Revision History:
  38  *
  39  */
  40
  41 #include "device.h"
  42 #include "rxtx.h"
  43 #include "tether.h"
  44 #include "card.h"
  45 #include "bssdb.h"
  46 #include "mac.h"
  47 #include "baseband.h"
  48 #include "michael.h"
  49 #include "tkip.h"
  50 #include "tcrc.h"
  51 #include "wctl.h"
  52 #include "wroute.h"
  53 #include "hostap.h"
  54 #include "rf.h"
  55 #include "iowpa.h"
  56 #include "aes_ccmp.h"
  57
  58 /*---------------------  Static Definitions -------------------------*/
  59
  60 /*---------------------  Static Classes  ----------------------------*/
  61
  62 /*---------------------  Static Variables  --------------------------*/
  63 //static int          msglevel                =MSG_LEVEL_DEBUG;
  64 static int msglevel = MSG_LEVEL_INFO;
  65
  66 const unsigned char acbyRxRate[MAX_RATE] =
  67 {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
  68
  69 /*---------------------  Static Functions  --------------------------*/
  70
  71 /*---------------------  Static Definitions -------------------------*/
  72
  73 /*---------------------  Static Functions  --------------------------*/
  74
  75 static unsigned char s_byGetRateIdx(unsigned char byRate);
  76
  77 static void
  78 s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize,
  79            PSEthernetHeader psEthHeader);
  80
  81 static void
  82 s_vProcessRxMACHeader(PSDevice pDevice, unsigned char *pbyRxBufferAddr,
  83                       unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
  84                       unsigned int *pcbHeadSize);
  85
  86 static bool s_bAPModeRxCtl(
  87         PSDevice pDevice,
  88         unsigned char *pbyFrame,
  89         int      iSANodeIndex
  90 );
  91
  92 static bool s_bAPModeRxData(
  93         PSDevice pDevice,
  94         struct sk_buff *skb,
  95         unsigned int FrameSize,
  96         unsigned int cbHeaderOffset,
  97         int      iSANodeIndex,
  98         int      iDANodeIndex
  99 );
 100
 101 static bool s_bHandleRxEncryption(
 102         PSDevice     pDevice,
 103         unsigned char *pbyFrame,
 104         unsigned int FrameSize,
 105         unsigned char *pbyRsr,
 106         unsigned char *pbyNewRsr,
 107         PSKeyItem   *pKeyOut,
 108         bool *pbExtIV,
 109         unsigned short *pwRxTSC15_0,
 110         unsigned long *pdwRxTSC47_16
 111 );
 112
 113 static bool s_bHostWepRxEncryption(
 114
 115         PSDevice     pDevice,
 116         unsigned char *pbyFrame,
 117         unsigned int FrameSize,
 118         unsigned char *pbyRsr,
 119         bool bOnFly,
 120         PSKeyItem    pKey,
 121         unsigned char *pbyNewRsr,
 122         bool *pbExtIV,
 123         unsigned short *pwRxTSC15_0,
 124         unsigned long *pdwRxTSC47_16
 125
 126 );
 127
 128 /*---------------------  Export Variables  --------------------------*/
 129
 130 /*+
 131  *
 132  * Description:
 133  *    Translate Rcv 802.11 header to 802.3 header with Rx buffer
 134  *
 135  * Parameters:
 136  *  In:
 137  *      pDevice
 138  *      dwRxBufferAddr  - Address of Rcv Buffer
 139  *      cbPacketSize    - Rcv Packet size
 140  *      bIsWEP          - If Rcv with WEP
 141  *  Out:
 142  *      pcbHeaderSize   - 802.11 header size
 143  *
 144  * Return Value: None
 145  *
 146  -*/
 147 static void
 148 s_vProcessRxMACHeader(PSDevice pDevice, unsigned char *pbyRxBufferAddr,
 149                       unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
 150                       unsigned int *pcbHeadSize)
 151 {
 152         unsigned char *pbyRxBuffer;
 153         unsigned int cbHeaderSize = 0;
 154         unsigned short *pwType;
 155         PS802_11Header  pMACHeader;
 156         int             ii;
 157
 158         pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize);
 159
 160         s_vGetDASA((unsigned char *)pMACHeader, &cbHeaderSize, &pDevice->sRxEthHeader);
 161
 162         if (bIsWEP) {
 163                 if (bExtIV) {
 164                         // strip IV&ExtIV , add 8 byte
 165                         cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 8);
 166                 } else {
 167                         // strip IV , add 4 byte
 168                         cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 4);
 169                 }
 170         } else {
 171                 cbHeaderSize += WLAN_HDR_ADDR3_LEN;
 172         }
 173
 174         pbyRxBuffer = (unsigned char *)(pbyRxBufferAddr + cbHeaderSize);
 175         if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_Bridgetunnel)) {
 176                 cbHeaderSize += 6;
 177         } else if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_RFC1042)) {
 178                 cbHeaderSize += 6;
 179                 pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize);
 180                 if ((*pwType != TYPE_PKT_IPX) && (*pwType != cpu_to_le16(0xF380))) {
 181                 } else {
 182                         cbHeaderSize -= 8;
 183                         pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize);
 184                         if (bIsWEP) {
 185                                 if (bExtIV) {
 186                                         *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8);    // 8 is IV&ExtIV
 187                                 } else {
 188                                         *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4);    // 4 is IV
 189                                 }
 190                         } else {
 191                                 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
 192                         }
 193                 }
 194         } else {
 195                 cbHeaderSize -= 2;
 196                 pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize);
 197                 if (bIsWEP) {
 198                         if (bExtIV) {
 199                                 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8);    // 8 is IV&ExtIV
 200                         } else {
 201                                 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4);    // 4 is IV
 202                         }
 203                 } else {
 204                         *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
 205                 }
 206         }
 207
 208         cbHeaderSize -= (ETH_ALEN * 2);
 209         pbyRxBuffer = (unsigned char *)(pbyRxBufferAddr + cbHeaderSize);
 210         for (ii = 0; ii < ETH_ALEN; ii++)
 211                 *pbyRxBuffer++ = pDevice->sRxEthHeader.abyDstAddr[ii];
 212         for (ii = 0; ii < ETH_ALEN; ii++)
 213                 *pbyRxBuffer++ = pDevice->sRxEthHeader.abySrcAddr[ii];
 214
 215         *pcbHeadSize = cbHeaderSize;
 216 }
 217
 218 static unsigned char s_byGetRateIdx(unsigned char byRate)
 219 {
 220         unsigned char byRateIdx;
 221
 222         for (byRateIdx = 0; byRateIdx < MAX_RATE; byRateIdx++) {
 223                 if (acbyRxRate[byRateIdx % MAX_RATE] == byRate)
 224                         return byRateIdx;
 225         }
 226         return 0;
 227 }
 228
 229 static void
 230 s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize,
 231            PSEthernetHeader psEthHeader)
 232 {
 233         unsigned int cbHeaderSize = 0;
 234         PS802_11Header  pMACHeader;
 235         int             ii;
 236
 237         pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize);
 238
 239         if ((pMACHeader->wFrameCtl & FC_TODS) == 0) {
 240                 if (pMACHeader->wFrameCtl & FC_FROMDS) {
 241                         for (ii = 0; ii < ETH_ALEN; ii++) {
 242                                 psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii];
 243                                 psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr3[ii];
 244                         }
 245                 } else {
 246                         // IBSS mode
 247                         for (ii = 0; ii < ETH_ALEN; ii++) {
 248                                 psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii];
 249                                 psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii];
 250                         }
 251                 }
 252         } else {
 253                 // Is AP mode..
 254                 if (pMACHeader->wFrameCtl & FC_FROMDS) {
 255                         for (ii = 0; ii < ETH_ALEN; ii++) {
 256                                 psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii];
 257                                 psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr4[ii];
 258                                 cbHeaderSize += 6;
 259                         }
 260                 } else {
 261                         for (ii = 0; ii < ETH_ALEN; ii++) {
 262                                 psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii];
 263                                 psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii];
 264                         }
 265                 }
 266         }
 267         *pcbHeaderSize = cbHeaderSize;
 268 }
 269
 270 //PLICE_DEBUG ->
 271
 272 void    MngWorkItem(void *Context)
 273 {
 274         PSRxMgmtPacket                  pRxMgmtPacket;
 275         PSDevice        pDevice =  (PSDevice) Context;
 276
 277         spin_lock_irq(&pDevice->lock);
 278         while (pDevice->rxManeQueue.packet_num != 0) {
 279                 pRxMgmtPacket =  DeQueue(pDevice);
 280                 vMgrRxManagePacket(pDevice, pDevice->pMgmt, pRxMgmtPacket);
 281         }
 282         spin_unlock_irq(&pDevice->lock);
 283 }
 284
 285 //PLICE_DEBUG<-
 286
 287 bool
 288 device_receive_frame(
 289         PSDevice pDevice,
 290         PSRxDesc pCurrRD
 291 )
 292 {
 293         PDEVICE_RD_INFO  pRDInfo = pCurrRD->pRDInfo;
 294         struct net_device_stats *pStats = &pDevice->stats;
 295         struct sk_buff *skb;
 296         PSMgmtObject    pMgmt = pDevice->pMgmt;
 297         PSRxMgmtPacket  pRxPacket = &(pDevice->pMgmt->sRxPacket);
 298         PS802_11Header  p802_11Header;
 299         unsigned char *pbyRsr;
 300         unsigned char *pbyNewRsr;
 301         unsigned char *pbyRSSI;
 302         PQWORD          pqwTSFTime;
 303         unsigned short *pwFrameSize;
 304         unsigned char *pbyFrame;
 305         bool bDeFragRx = false;
 306         bool bIsWEP = false;
 307         unsigned int cbHeaderOffset;
 308         unsigned int FrameSize;
 309         unsigned short wEtherType = 0;
 310         int             iSANodeIndex = -1;
 311         int             iDANodeIndex = -1;
 312         unsigned int ii;
 313         unsigned int cbIVOffset;
 314         bool bExtIV = false;
 315         unsigned char *pbyRxSts;
 316         unsigned char *pbyRxRate;
 317         unsigned char *pbySQ;
 318         unsigned int cbHeaderSize;
 319         PSKeyItem       pKey = NULL;
 320         unsigned short wRxTSC15_0 = 0;
 321         unsigned long dwRxTSC47_16 = 0;
 322         SKeyItem        STempKey;
 323         // 802.11h RPI
 324         unsigned long dwDuration = 0;
 325         long            ldBm = 0;
 326         long            ldBmThreshold = 0;
 327         PS802_11Header pMACHeader;
 328         bool bRxeapol_key = false;
 329
 330 //    DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- device_receive_frame---\n");
 331
 332         skb = pRDInfo->skb;
 333
 334 //PLICE_DEBUG->
 335 #if 1
 336         pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
 337                          pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 338 #endif
 339 //PLICE_DEBUG<-
 340         pwFrameSize = (unsigned short *)(skb->data + 2);
 341         FrameSize = cpu_to_le16(pCurrRD->m_rd1RD1.wReqCount) - cpu_to_le16(pCurrRD->m_rd0RD0.wResCount);
 342
 343         // Max: 2312Payload + 30HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
 344         // Min (ACK): 10HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
 345         if ((FrameSize > 2364) || (FrameSize <= 32)) {
 346                 // Frame Size error drop this packet.
 347                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 1 \n");
 348                 return false;
 349         }
 350
 351         pbyRxSts = (unsigned char *)(skb->data);
 352         pbyRxRate = (unsigned char *)(skb->data + 1);
 353         pbyRsr = (unsigned char *)(skb->data + FrameSize - 1);
 354         pbyRSSI = (unsigned char *)(skb->data + FrameSize - 2);
 355         pbyNewRsr = (unsigned char *)(skb->data + FrameSize - 3);
 356         pbySQ = (unsigned char *)(skb->data + FrameSize - 4);
 357         pqwTSFTime = (PQWORD)(skb->data + FrameSize - 12);
 358         pbyFrame = (unsigned char *)(skb->data + 4);
 359
 360         // get packet size
 361         FrameSize = cpu_to_le16(*pwFrameSize);
 362
 363         if ((FrameSize > 2346)|(FrameSize < 14)) { // Max: 2312Payload + 30HD +4CRC
 364                 // Min: 14 bytes ACK
 365                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 2 \n");
 366                 return false;
 367         }
 368 //PLICE_DEBUG->
 369 #if 1
 370         // update receive statistic counter
 371         STAvUpdateRDStatCounter(&pDevice->scStatistic,
 372                                 *pbyRsr,
 373                                 *pbyNewRsr,
 374                                 *pbyRxRate,
 375                                 pbyFrame,
 376                                 FrameSize);
 377
 378 #endif
 379
 380         pMACHeader = (PS802_11Header)((unsigned char *)(skb->data) + 8);
 381 //PLICE_DEBUG<-
 382         if (pDevice->bMeasureInProgress) {
 383                 if ((*pbyRsr & RSR_CRCOK) != 0) {
 384                         pDevice->byBasicMap |= 0x01;
 385                 }
 386                 dwDuration = (FrameSize << 4);
 387                 dwDuration /= acbyRxRate[*pbyRxRate%MAX_RATE];
 388                 if (*pbyRxRate <= RATE_11M) {
 389                         if (*pbyRxSts & 0x01) {
 390                                 // long preamble
 391                                 dwDuration += 192;
 392                         } else {
 393                                 // short preamble
 394                                 dwDuration += 96;
 395                         }
 396                 } else {
 397                         dwDuration += 16;
 398                 }
 399                 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
 400                 ldBmThreshold = -57;
 401                 for (ii = 7; ii > 0;) {
 402                         if (ldBm > ldBmThreshold) {
 403                                 break;
 404                         }
 405                         ldBmThreshold -= 5;
 406                         ii--;
 407                 }
 408                 pDevice->dwRPIs[ii] += dwDuration;
 409                 return false;
 410         }
 411
 412         if (!is_multicast_ether_addr(pbyFrame)) {
 413                 if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (PS802_11Header)(skb->data + 4))) {
 414                         pDevice->s802_11Counter.FrameDuplicateCount++;
 415                         return false;
 416                 }
 417         }
 418
 419         // Use for TKIP MIC
 420         s_vGetDASA(skb->data+4, &cbHeaderSize, &pDevice->sRxEthHeader);
 421
 422         // filter packet send from myself
 423         if (ether_addr_equal(pDevice->sRxEthHeader.abySrcAddr,
 424                              pDevice->abyCurrentNetAddr))
 425                 return false;
 426
 427         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) {
 428                 if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
 429                         p802_11Header = (PS802_11Header)(pbyFrame);
 430                         // get SA NodeIndex
 431                         if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(p802_11Header->abyAddr2), &iSANodeIndex)) {
 432                                 pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies;
 433                                 pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0;
 434                         }
 435                 }
 436         }
 437
 438         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 439                 if (s_bAPModeRxCtl(pDevice, pbyFrame, iSANodeIndex)) {
 440                         return false;
 441                 }
 442         }
 443
 444         if (IS_FC_WEP(pbyFrame)) {
 445                 bool bRxDecryOK = false;
 446
 447                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "rx WEP pkt\n");
 448                 bIsWEP = true;
 449                 if ((pDevice->bEnableHostWEP) && (iSANodeIndex >= 0)) {
 450                         pKey = &STempKey;
 451                         pKey->byCipherSuite = pMgmt->sNodeDBTable[iSANodeIndex].byCipherSuite;
 452                         pKey->dwKeyIndex = pMgmt->sNodeDBTable[iSANodeIndex].dwKeyIndex;
 453                         pKey->uKeyLength = pMgmt->sNodeDBTable[iSANodeIndex].uWepKeyLength;
 454                         pKey->dwTSC47_16 = pMgmt->sNodeDBTable[iSANodeIndex].dwTSC47_16;
 455                         pKey->wTSC15_0 = pMgmt->sNodeDBTable[iSANodeIndex].wTSC15_0;
 456                         memcpy(pKey->abyKey,
 457                                &pMgmt->sNodeDBTable[iSANodeIndex].abyWepKey[0],
 458                                pKey->uKeyLength
 459 );
 460
 461                         bRxDecryOK = s_bHostWepRxEncryption(pDevice,
 462                                                             pbyFrame,
 463                                                             FrameSize,
 464                                                             pbyRsr,
 465                                                             pMgmt->sNodeDBTable[iSANodeIndex].bOnFly,
 466                                                             pKey,
 467                                                             pbyNewRsr,
 468                                                             &bExtIV,
 469                                                             &wRxTSC15_0,
 470                                                             &dwRxTSC47_16);
 471                 } else {
 472                         bRxDecryOK = s_bHandleRxEncryption(pDevice,
 473                                                            pbyFrame,
 474                                                            FrameSize,
 475                                                            pbyRsr,
 476                                                            pbyNewRsr,
 477                                                            &pKey,
 478                                                            &bExtIV,
 479                                                            &wRxTSC15_0,
 480                                                            &dwRxTSC47_16);
 481                 }
 482
 483                 if (bRxDecryOK) {
 484                         if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) {
 485                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV Fail\n");
 486                                 if ((pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
 487                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
 488                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
 489                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
 490                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
 491                                         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 492                                                 pDevice->s802_11Counter.TKIPICVErrors++;
 493                                         } else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP)) {
 494                                                 pDevice->s802_11Counter.CCMPDecryptErrors++;
 495                                         } else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_WEP)) {
 496 //                      pDevice->s802_11Counter.WEPICVErrorCount.QuadPart++;
 497                                         }
 498                                 }
 499                                 return false;
 500                         }
 501                 } else {
 502                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "WEP Func Fail\n");
 503                         return false;
 504                 }
 505                 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
 506                         FrameSize -= 8;         // Message Integrity Code
 507                 else
 508                         FrameSize -= 4;         // 4 is ICV
 509         }
 510
 511         //
 512         // RX OK
 513         //
 514         //remove the CRC length
 515         FrameSize -= ETH_FCS_LEN;
 516
 517         if ((!(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI))) && // unicast address
 518             (IS_FRAGMENT_PKT((skb->data+4)))
 519 ) {
 520                 // defragment
 521                 bDeFragRx = WCTLbHandleFragment(pDevice, (PS802_11Header)(skb->data+4), FrameSize, bIsWEP, bExtIV);
 522                 pDevice->s802_11Counter.ReceivedFragmentCount++;
 523                 if (bDeFragRx) {
 524                         // defrag complete
 525                         skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb;
 526                         FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength;
 527
 528                 } else {
 529                         return false;
 530                 }
 531         }
 532
 533 // Management & Control frame Handle
 534         if ((IS_TYPE_DATA((skb->data+4))) == false) {
 535                 // Handle Control & Manage Frame
 536
 537                 if (IS_TYPE_MGMT((skb->data+4))) {
 538                         unsigned char *pbyData1;
 539                         unsigned char *pbyData2;
 540
 541                         pRxPacket->p80211Header = (PUWLAN_80211HDR)(skb->data+4);
 542                         pRxPacket->cbMPDULen = FrameSize;
 543                         pRxPacket->uRSSI = *pbyRSSI;
 544                         pRxPacket->bySQ = *pbySQ;
 545                         HIDWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(HIDWORD(*pqwTSFTime));
 546                         LODWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(LODWORD(*pqwTSFTime));
 547                         if (bIsWEP) {
 548                                 // strip IV
 549                                 pbyData1 = WLAN_HDR_A3_DATA_PTR(skb->data+4);
 550                                 pbyData2 = WLAN_HDR_A3_DATA_PTR(skb->data+4) + 4;
 551                                 for (ii = 0; ii < (FrameSize - 4); ii++) {
 552                                         *pbyData1 = *pbyData2;
 553                                         pbyData1++;
 554                                         pbyData2++;
 555                                 }
 556                         }
 557                         pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate);
 558                         pRxPacket->byRxChannel = (*pbyRxSts) >> 2;
 559 //PLICE_DEBUG->
 560 //EnQueue(pDevice,pRxPacket);
 561
 562 #ifdef  THREAD
 563                         EnQueue(pDevice, pRxPacket);
 564
 565                         //up(&pDevice->mlme_semaphore);
 566                         //Enque (pDevice->FirstRecvMngList,pDevice->LastRecvMngList,pMgmt);
 567 #else
 568
 569 #ifdef  TASK_LET
 570                         EnQueue(pDevice, pRxPacket);
 571                         tasklet_schedule(&pDevice->RxMngWorkItem);
 572 #else
 573                         vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
 574                         //tasklet_schedule(&pDevice->RxMngWorkItem);
 575 #endif
 576
 577 #endif
 578 //PLICE_DEBUG<-
 579                         //vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
 580                         // hostap Deamon handle 802.11 management
 581                         if (pDevice->bEnableHostapd) {
 582                                 skb->dev = pDevice->apdev;
 583                                 skb->data += 4;
 584                                 skb->tail += 4;
 585                                 skb_put(skb, FrameSize);
 586                                 skb_reset_mac_header(skb);
 587                                 skb->pkt_type = PACKET_OTHERHOST;
 588                                 skb->protocol = htons(ETH_P_802_2);
 589                                 memset(skb->cb, 0, sizeof(skb->cb));
 590                                 netif_rx(skb);
 591                                 return true;
 592                         }
 593                 } else {
 594                         // Control Frame
 595                 }
 596                 return false;
 597         } else {
 598                 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 599                         //In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC.
 600                         if (!(*pbyRsr & RSR_BSSIDOK)) {
 601                                 if (bDeFragRx) {
 602                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 603                                                 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 604                                                         pDevice->dev->name);
 605                                         }
 606                                 }
 607                                 return false;
 608                         }
 609                 } else {
 610                         // discard DATA packet while not associate || BSSID error
 611                         if (!pDevice->bLinkPass || !(*pbyRsr & RSR_BSSIDOK)) {
 612                                 if (bDeFragRx) {
 613                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 614                                                 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 615                                                         pDevice->dev->name);
 616                                         }
 617                                 }
 618                                 return false;
 619                         }
 620                         //mike add:station mode check eapol-key challenge--->
 621                         {
 622                                 unsigned char Protocol_Version;    //802.1x Authentication
 623                                 unsigned char Packet_Type;           //802.1x Authentication
 624                                 if (bIsWEP)
 625                                         cbIVOffset = 8;
 626                                 else
 627                                         cbIVOffset = 0;
 628                                 wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
 629                                         skb->data[cbIVOffset + 8 + 24 + 6 + 1];
 630                                 Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1];
 631                                 Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1 + 1];
 632                                 if (wEtherType == ETH_P_PAE) {         //Protocol Type in LLC-Header
 633                                         if (((Protocol_Version == 1) || (Protocol_Version == 2)) &&
 634                                             (Packet_Type == 3)) {  //802.1x OR eapol-key challenge frame receive
 635                                                 bRxeapol_key = true;
 636                                         }
 637                                 }
 638                         }
 639                         //mike add:station mode check eapol-key challenge<---
 640                 }
 641         }
 642
 643 // Data frame Handle
 644
 645         if (pDevice->bEnablePSMode) {
 646                 if (IS_FC_MOREDATA((skb->data+4))) {
 647                         if (*pbyRsr & RSR_ADDROK) {
 648                                 //PSbSendPSPOLL((PSDevice)pDevice);
 649                         }
 650                 } else {
 651                         if (pDevice->pMgmt->bInTIMWake == true) {
 652                                 pDevice->pMgmt->bInTIMWake = false;
 653                         }
 654                 }
 655         }
 656
 657         // Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps
 658         if (pDevice->bDiversityEnable && (FrameSize > 50) &&
 659             (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) &&
 660             pDevice->bLinkPass) {
 661                 BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0);
 662         }
 663
 664         if (pDevice->byLocalID != REV_ID_VT3253_B1) {
 665                 pDevice->uCurrRSSI = *pbyRSSI;
 666         }
 667         pDevice->byCurrSQ = *pbySQ;
 668
 669         if ((*pbyRSSI != 0) &&
 670             (pMgmt->pCurrBSS != NULL)) {
 671                 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
 672                 // Monitor if RSSI is too strong.
 673                 pMgmt->pCurrBSS->byRSSIStatCnt++;
 674                 pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT;
 675                 pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm;
 676                 for (ii = 0; ii < RSSI_STAT_COUNT; ii++) {
 677                         if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0) {
 678                                 pMgmt->pCurrBSS->ldBmMAX = max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm);
 679                         }
 680                 }
 681         }
 682
 683         // -----------------------------------------------
 684
 685         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && pDevice->bEnable8021x) {
 686                 unsigned char abyMacHdr[24];
 687
 688                 // Only 802.1x packet incoming allowed
 689                 if (bIsWEP)
 690                         cbIVOffset = 8;
 691                 else
 692                         cbIVOffset = 0;
 693                 wEtherType = (skb->data[cbIVOffset + 4 + 24 + 6] << 8) |
 694                         skb->data[cbIVOffset + 4 + 24 + 6 + 1];
 695
 696                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "wEtherType = %04x \n", wEtherType);
 697                 if (wEtherType == ETH_P_PAE) {
 698                         skb->dev = pDevice->apdev;
 699
 700                         if (bIsWEP) {
 701                                 // strip IV header(8)
 702                                 memcpy(&abyMacHdr[0], (skb->data + 4), 24);
 703                                 memcpy((skb->data + 4 + cbIVOffset), &abyMacHdr[0], 24);
 704                         }
 705                         skb->data +=  (cbIVOffset + 4);
 706                         skb->tail +=  (cbIVOffset + 4);
 707                         skb_put(skb, FrameSize);
 708                         skb_reset_mac_header(skb);
 709
 710                         skb->pkt_type = PACKET_OTHERHOST;
 711                         skb->protocol = htons(ETH_P_802_2);
 712                         memset(skb->cb, 0, sizeof(skb->cb));
 713                         netif_rx(skb);
 714                         return true;
 715
 716                 }
 717                 // check if 802.1x authorized
 718                 if (!(pMgmt->sNodeDBTable[iSANodeIndex].dwFlags & WLAN_STA_AUTHORIZED))
 719                         return false;
 720         }
 721
 722         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 723                 if (bIsWEP) {
 724                         FrameSize -= 8;  //MIC
 725                 }
 726         }
 727
 728         //--------------------------------------------------------------------------------
 729         // Soft MIC
 730         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 731                 if (bIsWEP) {
 732                         __le32 *pdwMIC_L;
 733                         __le32 *pdwMIC_R;
 734                         __le32 dwMIC_Priority;
 735                         __le32 dwMICKey0 = 0, dwMICKey1 = 0;
 736                         u32 dwLocalMIC_L = 0;
 737                         u32 dwLocalMIC_R = 0;
 738                         viawget_wpa_header *wpahdr;
 739
 740                         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 741                                 dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 742                                 dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 743                         } else {
 744                                 if (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) {
 745                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 746                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 747                                 } else if ((pKey->dwKeyIndex & BIT28) == 0) {
 748                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 749                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 750                                 } else {
 751                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 752                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 753                                 }
 754                         }
 755
 756                         MIC_vInit(dwMICKey0, dwMICKey1);
 757                         MIC_vAppend((unsigned char *)&(pDevice->sRxEthHeader.abyDstAddr[0]), 12);
 758                         dwMIC_Priority = 0;
 759                         MIC_vAppend((unsigned char *)&dwMIC_Priority, 4);
 760                         // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV.
 761                         MIC_vAppend((unsigned char *)(skb->data + 4 + WLAN_HDR_ADDR3_LEN + 8),
 762                                     FrameSize - WLAN_HDR_ADDR3_LEN - 8);
 763                         MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R);
 764                         MIC_vUnInit();
 765
 766                         pdwMIC_L = (__le32 *)(skb->data + 4 + FrameSize);
 767                         pdwMIC_R = (__le32 *)(skb->data + 4 + FrameSize + 4);
 768                         //DBG_PRN_GRP12(("RxL: %lx, RxR: %lx\n", *pdwMIC_L, *pdwMIC_R));
 769                         //DBG_PRN_GRP12(("LocalL: %lx, LocalR: %lx\n", dwLocalMIC_L, dwLocalMIC_R));
 770                         //DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dwMICKey0= %lx,dwMICKey1= %lx \n", dwMICKey0, dwMICKey1);
 771
 772                         if ((le32_to_cpu(*pdwMIC_L) != dwLocalMIC_L) ||
 773                             (le32_to_cpu(*pdwMIC_R) != dwLocalMIC_R) ||
 774                             pDevice->bRxMICFail) {
 775                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "MIC comparison is fail!\n");
 776                                 pDevice->bRxMICFail = false;
 777                                 //pDevice->s802_11Counter.TKIPLocalMICFailures.QuadPart++;
 778                                 pDevice->s802_11Counter.TKIPLocalMICFailures++;
 779                                 if (bDeFragRx) {
 780                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 781                                                 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 782                                                         pDevice->dev->name);
 783                                         }
 784                                 }
 785                                 //2008-0409-07, <Add> by Einsn Liu
 786 #ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
 787                                 //send event to wpa_supplicant
 788                                 {
 789                                         union iwreq_data wrqu;
 790                                         struct iw_michaelmicfailure ev;
 791                                         int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits
 792                                         memset(&ev, 0, sizeof(ev));
 793                                         ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
 794                                         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 795                                             (pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
 796                                             (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
 797                                                 ev.flags |= IW_MICFAILURE_PAIRWISE;
 798                                         } else {
 799                                                 ev.flags |= IW_MICFAILURE_GROUP;
 800                                         }
 801
 802                                         ev.src_addr.sa_family = ARPHRD_ETHER;
 803                                         memcpy(ev.src_addr.sa_data, pMACHeader->abyAddr2, ETH_ALEN);
 804                                         memset(&wrqu, 0, sizeof(wrqu));
 805                                         wrqu.data.length = sizeof(ev);
 806                                         wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
 807
 808                                 }
 809 #endif
 810
 811                                 if ((pDevice->bWPADEVUp) && (pDevice->skb != NULL)) {
 812                                         wpahdr = (viawget_wpa_header *)pDevice->skb->data;
 813                                         if ((pDevice->pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 814                                             (pDevice->pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
 815                                             (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
 816                                                 //s802_11_Status.Flags = NDIS_802_11_AUTH_REQUEST_PAIRWISE_ERROR;
 817                                                 wpahdr->type = VIAWGET_PTK_MIC_MSG;
 818                                         } else {
 819                                                 //s802_11_Status.Flags = NDIS_802_11_AUTH_REQUEST_GROUP_ERROR;
 820                                                 wpahdr->type = VIAWGET_GTK_MIC_MSG;
 821                                         }
 822                                         wpahdr->resp_ie_len = 0;
 823                                         wpahdr->req_ie_len = 0;
 824                                         skb_put(pDevice->skb, sizeof(viawget_wpa_header));
 825                                         pDevice->skb->dev = pDevice->wpadev;
 826                                         skb_reset_mac_header(pDevice->skb);
 827                                         pDevice->skb->pkt_type = PACKET_HOST;
 828                                         pDevice->skb->protocol = htons(ETH_P_802_2);
 829                                         memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb));
 830                                         netif_rx(pDevice->skb);
 831                                         pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
 832                                 }
 833
 834                                 return false;
 835
 836                         }
 837                 }
 838         } //---end of SOFT MIC-----------------------------------------------------------------------
 839
 840         // ++++++++++ Reply Counter Check +++++++++++++
 841
 842         if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) ||
 843                                (pKey->byCipherSuite == KEY_CTL_CCMP))) {
 844                 if (bIsWEP) {
 845                         unsigned short wLocalTSC15_0 = 0;
 846                         unsigned long dwLocalTSC47_16 = 0;
 847                         unsigned long long       RSC = 0;
 848                         // endian issues
 849                         RSC = *((unsigned long long *)&(pKey->KeyRSC));
 850                         wLocalTSC15_0 = (unsigned short)RSC;
 851                         dwLocalTSC47_16 = (unsigned long)(RSC>>16);
 852
 853                         RSC = dwRxTSC47_16;
 854                         RSC <<= 16;
 855                         RSC += wRxTSC15_0;
 856                         memcpy(&(pKey->KeyRSC), &RSC,  sizeof(QWORD));
 857
 858                         if ((pDevice->sMgmtObj.eCurrMode == WMAC_MODE_ESS_STA) &&
 859                             (pDevice->sMgmtObj.eCurrState == WMAC_STATE_ASSOC)) {
 860                                 // check RSC
 861                                 if ((wRxTSC15_0 < wLocalTSC15_0) &&
 862                                     (dwRxTSC47_16 <= dwLocalTSC47_16) &&
 863                                     !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) {
 864                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC is illegal~~!\n ");
 865                                         if (pKey->byCipherSuite == KEY_CTL_TKIP)
 866                                                 //pDevice->s802_11Counter.TKIPReplays.QuadPart++;
 867                                                 pDevice->s802_11Counter.TKIPReplays++;
 868                                         else
 869                                                 //pDevice->s802_11Counter.CCMPReplays.QuadPart++;
 870                                                 pDevice->s802_11Counter.CCMPReplays++;
 871
 872                                         if (bDeFragRx) {
 873                                                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 874                                                         DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 875                                                                 pDevice->dev->name);
 876                                                 }
 877                                         }
 878                                         return false;
 879                                 }
 880                         }
 881                 }
 882         } // ----- End of Reply Counter Check --------------------------
 883
 884         if ((pKey != NULL) && (bIsWEP)) {
 885 //      pDevice->s802_11Counter.DecryptSuccessCount.QuadPart++;
 886         }
 887
 888         s_vProcessRxMACHeader(pDevice, (unsigned char *)(skb->data+4), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset);
 889         FrameSize -= cbHeaderOffset;
 890         cbHeaderOffset += 4;        // 4 is Rcv buffer header
 891
 892         // Null data, framesize = 14
 893         if (FrameSize < 15)
 894                 return false;
 895
 896         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 897                 if (!s_bAPModeRxData(pDevice,
 898                                     skb,
 899                                     FrameSize,
 900                                     cbHeaderOffset,
 901                                     iSANodeIndex,
 902                                     iDANodeIndex
 903 )) {
 904                         if (bDeFragRx) {
 905                                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 906                                         DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 907                                                 pDevice->dev->name);
 908                                 }
 909                         }
 910                         return false;
 911                 }
 912         }
 913
 914         skb->data += cbHeaderOffset;
 915         skb->tail += cbHeaderOffset;
 916         skb_put(skb, FrameSize);
 917         skb->protocol = eth_type_trans(skb, skb->dev);
 918
 919         //drop frame not met IEEE 802.3
 920 /*
 921   if (pDevice->flags & DEVICE_FLAGS_VAL_PKT_LEN) {
 922   if ((skb->protocol==htons(ETH_P_802_3)) &&
 923   (skb->len!=htons(skb->mac.ethernet->h_proto))) {
 924   pStats->rx_length_errors++;
 925   pStats->rx_dropped++;
 926   if (bDeFragRx) {
 927   if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 928   DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
 929   pDevice->dev->name);
 930   }
 931   }
 932   return false;
 933   }
 934   }
 935 */
 936
 937         skb->ip_summed = CHECKSUM_NONE;
 938         pStats->rx_bytes += skb->len;
 939         pStats->rx_packets++;
 940         netif_rx(skb);
 941
 942         if (bDeFragRx) {
 943                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 944                         DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 945                                 pDevice->dev->name);
 946                 }
 947                 return false;
 948         }
 949
 950         return true;
 951 }
 952
 953 static bool s_bAPModeRxCtl(
 954         PSDevice pDevice,
 955         unsigned char *pbyFrame,
 956         int      iSANodeIndex
 957 )
 958 {
 959         PS802_11Header      p802_11Header;
 960         CMD_STATUS          Status;
 961         PSMgmtObject        pMgmt = pDevice->pMgmt;
 962
 963         if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
 964                 p802_11Header = (PS802_11Header)(pbyFrame);
 965                 if (!IS_TYPE_MGMT(pbyFrame)) {
 966                         // Data & PS-Poll packet
 967                         // check frame class
 968                         if (iSANodeIndex > 0) {
 969                                 // frame class 3 fliter & checking
 970                                 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_AUTH) {
 971                                         // send deauth notification
 972                                         // reason = (6) class 2 received from nonauth sta
 973                                         vMgrDeAuthenBeginSta(pDevice,
 974                                                              pMgmt,
 975                                                              (unsigned char *)(p802_11Header->abyAddr2),
 976                                                              (WLAN_MGMT_REASON_CLASS2_NONAUTH),
 977                                                              &Status
 978 );
 979                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 1\n");
 980                                         return true;
 981                                 }
 982                                 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_ASSOC) {
 983                                         // send deassoc notification
 984                                         // reason = (7) class 3 received from nonassoc sta
 985                                         vMgrDisassocBeginSta(pDevice,
 986                                                              pMgmt,
 987                                                              (unsigned char *)(p802_11Header->abyAddr2),
 988                                                              (WLAN_MGMT_REASON_CLASS3_NONASSOC),
 989                                                              &Status
 990 );
 991                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDisassocBeginSta 2\n");
 992                                         return true;
 993                                 }
 994
 995                                 if (pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable) {
 996                                         // delcare received ps-poll event
 997                                         if (IS_CTL_PSPOLL(pbyFrame)) {
 998                                                 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 999                                                 bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
1000                                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 1\n");
1001                                         } else {
1002                                                 // check Data PS state
1003                                                 // if PW bit off, send out all PS bufferring packets.
1004                                                 if (!IS_FC_POWERMGT(pbyFrame)) {
1005                                                         pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
1006                                                         pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
1007                                                         bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
1008                                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 2\n");
1009                                                 }
1010                                         }
1011                                 } else {
1012                                         if (IS_FC_POWERMGT(pbyFrame)) {
1013                                                 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = true;
1014                                                 // Once if STA in PS state, enable multicast bufferring
1015                                                 pMgmt->sNodeDBTable[0].bPSEnable = true;
1016                                         } else {
1017                                                 // clear all pending PS frame.
1018                                                 if (pMgmt->sNodeDBTable[iSANodeIndex].wEnQueueCnt > 0) {
1019                                                         pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
1020                                                         pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
1021                                                         bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
1022                                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 3\n");
1023
1024                                                 }
1025                                         }
1026                                 }
1027                         } else {
1028                                 vMgrDeAuthenBeginSta(pDevice,
1029                                                      pMgmt,
1030                                                      (unsigned char *)(p802_11Header->abyAddr2),
1031                                                      (WLAN_MGMT_REASON_CLASS2_NONAUTH),
1032                                                      &Status
1033 );
1034                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 3\n");
1035                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "BSSID:%pM\n",
1036                                         p802_11Header->abyAddr3);
1037                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR2:%pM\n",
1038                                         p802_11Header->abyAddr2);
1039                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR1:%pM\n",
1040                                         p802_11Header->abyAddr1);
1041                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: wFrameCtl= %x\n", p802_11Header->wFrameCtl);
1042                                 VNSvInPortB(pDevice->PortOffset + MAC_REG_RCR, &(pDevice->byRxMode));
1043                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc:pDevice->byRxMode = %x\n", pDevice->byRxMode);
1044                                 return true;
1045                         }
1046                 }
1047         }
1048         return false;
1049 }
1050
1051 static bool s_bHandleRxEncryption(
1052         PSDevice     pDevice,
1053         unsigned char *pbyFrame,
1054         unsigned int FrameSize,
1055         unsigned char *pbyRsr,
1056         unsigned char *pbyNewRsr,
1057         PSKeyItem   *pKeyOut,
1058         bool *pbExtIV,
1059         unsigned short *pwRxTSC15_0,
1060         unsigned long *pdwRxTSC47_16
1061 )
1062 {
1063         unsigned int PayloadLen = FrameSize;
1064         unsigned char *pbyIV;
1065         unsigned char byKeyIdx;
1066         PSKeyItem       pKey = NULL;
1067         unsigned char byDecMode = KEY_CTL_WEP;
1068         PSMgmtObject    pMgmt = pDevice->pMgmt;
1069
1070         *pwRxTSC15_0 = 0;
1071         *pdwRxTSC47_16 = 0;
1072
1073         pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1074         if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1075             WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
1076                 pbyIV += 6;             // 6 is 802.11 address4
1077                 PayloadLen -= 6;
1078         }
1079         byKeyIdx = (*(pbyIV+3) & 0xc0);
1080         byKeyIdx >>= 6;
1081         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "\nKeyIdx: %d\n", byKeyIdx);
1082
1083         if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
1084             (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
1085             (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
1086             (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
1087             (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
1088                 if (((*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) &&
1089                     (pDevice->pMgmt->byCSSPK != KEY_CTL_NONE)) {
1090                         // unicast pkt use pairwise key
1091                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "unicast pkt\n");
1092                         if (KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, 0xFFFFFFFF, &pKey) == true) {
1093                                 if (pDevice->pMgmt->byCSSPK == KEY_CTL_TKIP)
1094                                         byDecMode = KEY_CTL_TKIP;
1095                                 else if (pDevice->pMgmt->byCSSPK == KEY_CTL_CCMP)
1096                                         byDecMode = KEY_CTL_CCMP;
1097                         }
1098                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "unicast pkt: %d, %p\n", byDecMode, pKey);
1099                 } else {
1100                         // use group key
1101                         KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, byKeyIdx, &pKey);
1102                         if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1103                                 byDecMode = KEY_CTL_TKIP;
1104                         else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1105                                 byDecMode = KEY_CTL_CCMP;
1106                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "group pkt: %d, %d, %p\n", byKeyIdx, byDecMode, pKey);
1107                 }
1108         }
1109         // our WEP only support Default Key
1110         if (pKey == NULL) {
1111                 // use default group key
1112                 KeybGetKey(&(pDevice->sKey), pDevice->abyBroadcastAddr, byKeyIdx, &pKey);
1113                 if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1114                         byDecMode = KEY_CTL_TKIP;
1115                 else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1116                         byDecMode = KEY_CTL_CCMP;
1117         }
1118         *pKeyOut = pKey;
1119
1120         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1121
1122         if (pKey == NULL) {
1123                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "pKey == NULL\n");
1124                 if (byDecMode == KEY_CTL_WEP) {
1125 //            pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1126                 } else if (pDevice->bLinkPass) {
1127 //            pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1128                 }
1129                 return false;
1130         }
1131         if (byDecMode != pKey->byCipherSuite) {
1132                 if (byDecMode == KEY_CTL_WEP) {
1133 //            pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1134                 } else if (pDevice->bLinkPass) {
1135 //            pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1136                 }
1137                 *pKeyOut = NULL;
1138                 return false;
1139         }
1140         if (byDecMode == KEY_CTL_WEP) {
1141                 // handle WEP
1142                 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1143                     (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) {
1144                         // Software WEP
1145                         // 1. 3253A
1146                         // 2. WEP 256
1147
1148                         PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1149                         memcpy(pDevice->abyPRNG, pbyIV, 3);
1150                         memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1151                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1152                         rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1153
1154                         if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) {
1155                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1156                         }
1157                 }
1158         } else if ((byDecMode == KEY_CTL_TKIP) ||
1159                    (byDecMode == KEY_CTL_CCMP)) {
1160                 // TKIP/AES
1161
1162                 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1163                 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1164                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ExtIV: %lx\n", *pdwRxTSC47_16);
1165                 if (byDecMode == KEY_CTL_TKIP) {
1166                         *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV + 2), *pbyIV));
1167                 } else {
1168                         *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1169                 }
1170                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC0_15: %x\n", *pwRxTSC15_0);
1171
1172                 if ((byDecMode == KEY_CTL_TKIP) &&
1173                     (pDevice->byLocalID <= REV_ID_VT3253_A1)) {
1174                         // Software TKIP
1175                         // 1. 3253 A
1176                         PS802_11Header  pMACHeader = (PS802_11Header)(pbyFrame);
1177                         TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1178                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1179                         rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1180                         if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1181                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1182                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV OK!\n");
1183                         } else {
1184                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV FAIL!!!\n");
1185                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PayloadLen = %d\n", PayloadLen);
1186                         }
1187                 }
1188         }// end of TKIP/AES
1189
1190         if ((*(pbyIV+3) & 0x20) != 0)
1191                 *pbExtIV = true;
1192         return true;
1193 }
1194
1195 static bool s_bHostWepRxEncryption(
1196         PSDevice     pDevice,
1197         unsigned char *pbyFrame,
1198         unsigned int FrameSize,
1199         unsigned char *pbyRsr,
1200         bool bOnFly,
1201         PSKeyItem    pKey,
1202         unsigned char *pbyNewRsr,
1203         bool *pbExtIV,
1204         unsigned short *pwRxTSC15_0,
1205         unsigned long *pdwRxTSC47_16
1206 )
1207 {
1208         unsigned int PayloadLen = FrameSize;
1209         unsigned char *pbyIV;
1210         unsigned char byKeyIdx;
1211         unsigned char byDecMode = KEY_CTL_WEP;
1212         PS802_11Header  pMACHeader;
1213
1214         *pwRxTSC15_0 = 0;
1215         *pdwRxTSC47_16 = 0;
1216
1217         pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1218         if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1219             WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
1220                 pbyIV += 6;             // 6 is 802.11 address4
1221                 PayloadLen -= 6;
1222         }
1223         byKeyIdx = (*(pbyIV+3) & 0xc0);
1224         byKeyIdx >>= 6;
1225         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "\nKeyIdx: %d\n", byKeyIdx);
1226
1227         if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1228                 byDecMode = KEY_CTL_TKIP;
1229         else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1230                 byDecMode = KEY_CTL_CCMP;
1231
1232         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1233
1234         if (byDecMode != pKey->byCipherSuite) {
1235                 if (byDecMode == KEY_CTL_WEP) {
1236 //            pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1237                 } else if (pDevice->bLinkPass) {
1238 //            pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1239                 }
1240                 return false;
1241         }
1242
1243         if (byDecMode == KEY_CTL_WEP) {
1244                 // handle WEP
1245                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "byDecMode == KEY_CTL_WEP \n");
1246                 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1247                     (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true) ||
1248                     !bOnFly) {
1249                         // Software WEP
1250                         // 1. 3253A
1251                         // 2. WEP 256
1252                         // 3. NotOnFly
1253
1254                         PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1255                         memcpy(pDevice->abyPRNG, pbyIV, 3);
1256                         memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1257                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1258                         rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1259
1260                         if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) {
1261                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1262                         }
1263                 }
1264         } else if ((byDecMode == KEY_CTL_TKIP) ||
1265                    (byDecMode == KEY_CTL_CCMP)) {
1266                 // TKIP/AES
1267
1268                 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1269                 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1270                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ExtIV: %lx\n", *pdwRxTSC47_16);
1271
1272                 if (byDecMode == KEY_CTL_TKIP) {
1273                         *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1274                 } else {
1275                         *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1276                 }
1277                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC0_15: %x\n", *pwRxTSC15_0);
1278
1279                 if (byDecMode == KEY_CTL_TKIP) {
1280                         if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || !bOnFly) {
1281                                 // Software TKIP
1282                                 // 1. 3253 A
1283                                 // 2. NotOnFly
1284                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "soft KEY_CTL_TKIP \n");
1285                                 pMACHeader = (PS802_11Header)(pbyFrame);
1286                                 TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1287                                 rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1288                                 rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1289                                 if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1290                                         *pbyNewRsr |= NEWRSR_DECRYPTOK;
1291                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV OK!\n");
1292                                 } else {
1293                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV FAIL!!!\n");
1294                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PayloadLen = %d\n", PayloadLen);
1295                                 }
1296                         }
1297                 }
1298
1299                 if (byDecMode == KEY_CTL_CCMP) {
1300                         if (!bOnFly) {
1301                                 // Software CCMP
1302                                 // NotOnFly
1303                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "soft KEY_CTL_CCMP\n");
1304                                 if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) {
1305                                         *pbyNewRsr |= NEWRSR_DECRYPTOK;
1306                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "CCMP MIC compare OK!\n");
1307                                 } else {
1308                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "CCMP MIC fail!\n");
1309                                 }
1310                         }
1311                 }
1312
1313         }// end of TKIP/AES
1314
1315         if ((*(pbyIV+3) & 0x20) != 0)
1316                 *pbExtIV = true;
1317         return true;
1318 }
1319
1320 static bool s_bAPModeRxData(
1321         PSDevice pDevice,
1322         struct sk_buff *skb,
1323         unsigned int FrameSize,
1324         unsigned int cbHeaderOffset,
1325         int      iSANodeIndex,
1326         int      iDANodeIndex
1327 )
1328 {
1329         PSMgmtObject        pMgmt = pDevice->pMgmt;
1330         bool bRelayAndForward = false;
1331         bool bRelayOnly = false;
1332         unsigned char byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
1333         unsigned short wAID;
1334
1335         struct sk_buff *skbcpy = NULL;
1336
1337         if (FrameSize > CB_MAX_BUF_SIZE)
1338                 return false;
1339         // check DA
1340         if (is_multicast_ether_addr((unsigned char *)(skb->data+cbHeaderOffset))) {
1341                 if (pMgmt->sNodeDBTable[0].bPSEnable) {
1342                         skbcpy = dev_alloc_skb((int)pDevice->rx_buf_sz);
1343
1344                         // if any node in PS mode, buffer packet until DTIM.
1345                         if (skbcpy == NULL) {
1346                                 DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "relay multicast no skb available \n");
1347                         } else {
1348                                 skbcpy->dev = pDevice->dev;
1349                                 skbcpy->len = FrameSize;
1350                                 memcpy(skbcpy->data, skb->data+cbHeaderOffset, FrameSize);
1351                                 skb_queue_tail(&(pMgmt->sNodeDBTable[0].sTxPSQueue), skbcpy);
1352
1353                                 pMgmt->sNodeDBTable[0].wEnQueueCnt++;
1354                                 // set tx map
1355                                 pMgmt->abyPSTxMap[0] |= byMask[0];
1356                         }
1357                 } else {
1358                         bRelayAndForward = true;
1359                 }
1360         } else {
1361                 // check if relay
1362                 if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(skb->data+cbHeaderOffset), &iDANodeIndex)) {
1363                         if (pMgmt->sNodeDBTable[iDANodeIndex].eNodeState >= NODE_ASSOC) {
1364                                 if (pMgmt->sNodeDBTable[iDANodeIndex].bPSEnable) {
1365                                         // queue this skb until next PS tx, and then release.
1366
1367                                         skb->data += cbHeaderOffset;
1368                                         skb->tail += cbHeaderOffset;
1369                                         skb_put(skb, FrameSize);
1370                                         skb_queue_tail(&pMgmt->sNodeDBTable[iDANodeIndex].sTxPSQueue, skb);
1371                                         pMgmt->sNodeDBTable[iDANodeIndex].wEnQueueCnt++;
1372                                         wAID = pMgmt->sNodeDBTable[iDANodeIndex].wAID;
1373                                         pMgmt->abyPSTxMap[wAID >> 3] |=  byMask[wAID & 7];
1374                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "relay: index= %d, pMgmt->abyPSTxMap[%d]= %d\n",
1375                                                 iDANodeIndex, (wAID >> 3), pMgmt->abyPSTxMap[wAID >> 3]);
1376                                         return true;
1377                                 } else {
1378                                         bRelayOnly = true;
1379                                 }
1380                         }
1381                 }
1382         }
1383
1384         if (bRelayOnly || bRelayAndForward) {
1385                 // relay this packet right now
1386                 if (bRelayAndForward)
1387                         iDANodeIndex = 0;
1388
1389                 if ((pDevice->uAssocCount > 1) && (iDANodeIndex >= 0)) {
1390                         ROUTEbRelay(pDevice, (unsigned char *)(skb->data + cbHeaderOffset), FrameSize, (unsigned int)iDANodeIndex);
1391                 }
1392
1393                 if (bRelayOnly)
1394                         return false;
1395         }
1396         // none associate, don't forward
1397         if (pDevice->uAssocCount == 0)
1398                 return false;
1399
1400         return true;
1401 }