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