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 #include "dpc.h"
  58
  59 /*---------------------  Static Definitions -------------------------*/
  60
  61 /*---------------------  Static Classes  ----------------------------*/
  62
  63 /*---------------------  Static Variables  --------------------------*/
  64 static int msglevel = MSG_LEVEL_INFO;
  65
  66 static 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
 227         return 0;
 228 }
 229
 230 static void
 231 s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize,
 232            PSEthernetHeader psEthHeader)
 233 {
 234         unsigned int cbHeaderSize = 0;
 235         PS802_11Header  pMACHeader;
 236         int             ii;
 237
 238         pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize);
 239
 240         if ((pMACHeader->wFrameCtl & FC_TODS) == 0) {
 241                 if (pMACHeader->wFrameCtl & FC_FROMDS) {
 242                         for (ii = 0; ii < ETH_ALEN; ii++) {
 243                                 psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii];
 244                                 psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr3[ii];
 245                         }
 246                 } else {
 247                         // IBSS mode
 248                         for (ii = 0; ii < ETH_ALEN; ii++) {
 249                                 psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii];
 250                                 psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii];
 251                         }
 252                 }
 253         } else {
 254                 // Is AP mode..
 255                 if (pMACHeader->wFrameCtl & FC_FROMDS) {
 256                         for (ii = 0; ii < ETH_ALEN; ii++) {
 257                                 psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii];
 258                                 psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr4[ii];
 259                                 cbHeaderSize += 6;
 260                         }
 261                 } else {
 262                         for (ii = 0; ii < ETH_ALEN; ii++) {
 263                                 psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii];
 264                                 psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii];
 265                         }
 266                 }
 267         }
 268         *pcbHeaderSize = cbHeaderSize;
 269 }
 270
 271 bool
 272 device_receive_frame(
 273         PSDevice pDevice,
 274         PSRxDesc pCurrRD
 275 )
 276 {
 277         PDEVICE_RD_INFO  pRDInfo = pCurrRD->pRDInfo;
 278         struct net_device_stats *pStats = &pDevice->stats;
 279         struct sk_buff *skb;
 280         PSMgmtObject    pMgmt = pDevice->pMgmt;
 281         PSRxMgmtPacket  pRxPacket = &(pDevice->pMgmt->sRxPacket);
 282         PS802_11Header  p802_11Header;
 283         unsigned char *pbyRsr;
 284         unsigned char *pbyNewRsr;
 285         unsigned char *pbyRSSI;
 286         PQWORD          pqwTSFTime;
 287         unsigned short *pwFrameSize;
 288         unsigned char *pbyFrame;
 289         bool bDeFragRx = false;
 290         bool bIsWEP = false;
 291         unsigned int cbHeaderOffset;
 292         unsigned int FrameSize;
 293         unsigned short wEtherType = 0;
 294         int             iSANodeIndex = -1;
 295         int             iDANodeIndex = -1;
 296         unsigned int ii;
 297         unsigned int cbIVOffset;
 298         bool bExtIV = false;
 299         unsigned char *pbyRxSts;
 300         unsigned char *pbyRxRate;
 301         unsigned char *pbySQ;
 302         unsigned int cbHeaderSize;
 303         PSKeyItem       pKey = NULL;
 304         unsigned short wRxTSC15_0 = 0;
 305         unsigned long dwRxTSC47_16 = 0;
 306         SKeyItem        STempKey;
 307         // 802.11h RPI
 308         unsigned long dwDuration = 0;
 309         long            ldBm = 0;
 310         long            ldBmThreshold = 0;
 311         PS802_11Header pMACHeader;
 312         bool bRxeapol_key = false;
 313
 314         skb = pRDInfo->skb;
 315
 316 //PLICE_DEBUG->
 317         pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
 318                          pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 319 //PLICE_DEBUG<-
 320         pwFrameSize = (unsigned short *)(skb->data + 2);
 321         FrameSize = cpu_to_le16(pCurrRD->m_rd1RD1.wReqCount) - cpu_to_le16(pCurrRD->m_rd0RD0.wResCount);
 322
 323         // Max: 2312Payload + 30HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
 324         // Min (ACK): 10HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
 325         if ((FrameSize > 2364) || (FrameSize <= 32)) {
 326                 // Frame Size error drop this packet.
 327                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 1\n");
 328                 return false;
 329         }
 330
 331         pbyRxSts = (unsigned char *)(skb->data);
 332         pbyRxRate = (unsigned char *)(skb->data + 1);
 333         pbyRsr = (unsigned char *)(skb->data + FrameSize - 1);
 334         pbyRSSI = (unsigned char *)(skb->data + FrameSize - 2);
 335         pbyNewRsr = (unsigned char *)(skb->data + FrameSize - 3);
 336         pbySQ = (unsigned char *)(skb->data + FrameSize - 4);
 337         pqwTSFTime = (PQWORD)(skb->data + FrameSize - 12);
 338         pbyFrame = (unsigned char *)(skb->data + 4);
 339
 340         // get packet size
 341         FrameSize = cpu_to_le16(*pwFrameSize);
 342
 343         if ((FrameSize > 2346)|(FrameSize < 14)) { // Max: 2312Payload + 30HD +4CRC
 344                 // Min: 14 bytes ACK
 345                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 2\n");
 346                 return false;
 347         }
 348 //PLICE_DEBUG->
 349         // update receive statistic counter
 350         STAvUpdateRDStatCounter(&pDevice->scStatistic,
 351                                 *pbyRsr,
 352                                 *pbyNewRsr,
 353                                 *pbyRxRate,
 354                                 pbyFrame,
 355                                 FrameSize);
 356
 357         pMACHeader = (PS802_11Header)((unsigned char *)(skb->data) + 8);
 358 //PLICE_DEBUG<-
 359         if (pDevice->bMeasureInProgress) {
 360                 if ((*pbyRsr & RSR_CRCOK) != 0)
 361                         pDevice->byBasicMap |= 0x01;
 362
 363                 dwDuration = (FrameSize << 4);
 364                 dwDuration /= acbyRxRate[*pbyRxRate%MAX_RATE];
 365                 if (*pbyRxRate <= RATE_11M) {
 366                         if (*pbyRxSts & 0x01) {
 367                                 // long preamble
 368                                 dwDuration += 192;
 369                         } else {
 370                                 // short preamble
 371                                 dwDuration += 96;
 372                         }
 373                 } else {
 374                         dwDuration += 16;
 375                 }
 376                 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
 377                 ldBmThreshold = -57;
 378                 for (ii = 7; ii > 0;) {
 379                         if (ldBm > ldBmThreshold)
 380                                 break;
 381
 382                         ldBmThreshold -= 5;
 383                         ii--;
 384                 }
 385                 pDevice->dwRPIs[ii] += dwDuration;
 386                 return false;
 387         }
 388
 389         if (!is_multicast_ether_addr(pbyFrame)) {
 390                 if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (PS802_11Header)(skb->data + 4))) {
 391                         pDevice->s802_11Counter.FrameDuplicateCount++;
 392                         return false;
 393                 }
 394         }
 395
 396         // Use for TKIP MIC
 397         s_vGetDASA(skb->data+4, &cbHeaderSize, &pDevice->sRxEthHeader);
 398
 399         // filter packet send from myself
 400         if (ether_addr_equal(pDevice->sRxEthHeader.abySrcAddr,
 401                              pDevice->abyCurrentNetAddr))
 402                 return false;
 403
 404         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) {
 405                 if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
 406                         p802_11Header = (PS802_11Header)(pbyFrame);
 407                         // get SA NodeIndex
 408                         if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(p802_11Header->abyAddr2), &iSANodeIndex)) {
 409                                 pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies;
 410                                 pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0;
 411                         }
 412                 }
 413         }
 414
 415         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 416                 if (s_bAPModeRxCtl(pDevice, pbyFrame, iSANodeIndex))
 417                         return false;
 418         }
 419
 420         if (IS_FC_WEP(pbyFrame)) {
 421                 bool bRxDecryOK = false;
 422
 423                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "rx WEP pkt\n");
 424                 bIsWEP = true;
 425                 if ((pDevice->bEnableHostWEP) && (iSANodeIndex >= 0)) {
 426                         pKey = &STempKey;
 427                         pKey->byCipherSuite = pMgmt->sNodeDBTable[iSANodeIndex].byCipherSuite;
 428                         pKey->dwKeyIndex = pMgmt->sNodeDBTable[iSANodeIndex].dwKeyIndex;
 429                         pKey->uKeyLength = pMgmt->sNodeDBTable[iSANodeIndex].uWepKeyLength;
 430                         pKey->dwTSC47_16 = pMgmt->sNodeDBTable[iSANodeIndex].dwTSC47_16;
 431                         pKey->wTSC15_0 = pMgmt->sNodeDBTable[iSANodeIndex].wTSC15_0;
 432                         memcpy(pKey->abyKey,
 433                                &pMgmt->sNodeDBTable[iSANodeIndex].abyWepKey[0],
 434                                pKey->uKeyLength
 435 );
 436
 437                         bRxDecryOK = s_bHostWepRxEncryption(pDevice,
 438                                                             pbyFrame,
 439                                                             FrameSize,
 440                                                             pbyRsr,
 441                                                             pMgmt->sNodeDBTable[iSANodeIndex].bOnFly,
 442                                                             pKey,
 443                                                             pbyNewRsr,
 444                                                             &bExtIV,
 445                                                             &wRxTSC15_0,
 446                                                             &dwRxTSC47_16);
 447                 } else {
 448                         bRxDecryOK = s_bHandleRxEncryption(pDevice,
 449                                                            pbyFrame,
 450                                                            FrameSize,
 451                                                            pbyRsr,
 452                                                            pbyNewRsr,
 453                                                            &pKey,
 454                                                            &bExtIV,
 455                                                            &wRxTSC15_0,
 456                                                            &dwRxTSC47_16);
 457                 }
 458
 459                 if (bRxDecryOK) {
 460                         if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) {
 461                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV Fail\n");
 462                                 if ((pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
 463                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
 464                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
 465                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
 466                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
 467                                         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP))
 468                                                 pDevice->s802_11Counter.TKIPICVErrors++;
 469                                         else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
 470                                                 pDevice->s802_11Counter.CCMPDecryptErrors++;
 471                                 }
 472                                 return false;
 473                         }
 474                 } else {
 475                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "WEP Func Fail\n");
 476                         return false;
 477                 }
 478                 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
 479                         FrameSize -= 8;         // Message Integrity Code
 480                 else
 481                         FrameSize -= 4;         // 4 is ICV
 482         }
 483
 484         //
 485         // RX OK
 486         //
 487         //remove the CRC length
 488         FrameSize -= ETH_FCS_LEN;
 489
 490         if ((!(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI))) && // unicast address
 491             (IS_FRAGMENT_PKT((skb->data+4)))
 492 ) {
 493                 // defragment
 494                 bDeFragRx = WCTLbHandleFragment(pDevice, (PS802_11Header)(skb->data+4), FrameSize, bIsWEP, bExtIV);
 495                 pDevice->s802_11Counter.ReceivedFragmentCount++;
 496                 if (bDeFragRx) {
 497                         // defrag complete
 498                         skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb;
 499                         FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength;
 500
 501                 } else {
 502                         return false;
 503                 }
 504         }
 505
 506 // Management & Control frame Handle
 507         if ((IS_TYPE_DATA((skb->data+4))) == false) {
 508                 // Handle Control & Manage Frame
 509
 510                 if (IS_TYPE_MGMT((skb->data+4))) {
 511                         unsigned char *pbyData1;
 512                         unsigned char *pbyData2;
 513
 514                         pRxPacket->p80211Header = (PUWLAN_80211HDR)(skb->data+4);
 515                         pRxPacket->cbMPDULen = FrameSize;
 516                         pRxPacket->uRSSI = *pbyRSSI;
 517                         pRxPacket->bySQ = *pbySQ;
 518                         HIDWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(HIDWORD(*pqwTSFTime));
 519                         LODWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(LODWORD(*pqwTSFTime));
 520                         if (bIsWEP) {
 521                                 // strip IV
 522                                 pbyData1 = WLAN_HDR_A3_DATA_PTR(skb->data+4);
 523                                 pbyData2 = WLAN_HDR_A3_DATA_PTR(skb->data+4) + 4;
 524                                 for (ii = 0; ii < (FrameSize - 4); ii++) {
 525                                         *pbyData1 = *pbyData2;
 526                                         pbyData1++;
 527                                         pbyData2++;
 528                                 }
 529                         }
 530                         pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate);
 531                         pRxPacket->byRxChannel = (*pbyRxSts) >> 2;
 532
 533                         vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
 534
 535                         // hostap Deamon handle 802.11 management
 536                         if (pDevice->bEnableHostapd) {
 537                                 skb->dev = pDevice->apdev;
 538                                 skb->data += 4;
 539                                 skb->tail += 4;
 540                                 skb_put(skb, FrameSize);
 541                                 skb_reset_mac_header(skb);
 542                                 skb->pkt_type = PACKET_OTHERHOST;
 543                                 skb->protocol = htons(ETH_P_802_2);
 544                                 memset(skb->cb, 0, sizeof(skb->cb));
 545                                 netif_rx(skb);
 546                                 return true;
 547                         }
 548                 }
 549
 550                 return false;
 551         } else {
 552                 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 553                         //In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC.
 554                         if (!(*pbyRsr & RSR_BSSIDOK)) {
 555                                 if (bDeFragRx) {
 556                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 557                                                 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 558                                                         pDevice->dev->name);
 559                                         }
 560                                 }
 561                                 return false;
 562                         }
 563                 } else {
 564                         // discard DATA packet while not associate || BSSID error
 565                         if (!pDevice->bLinkPass || !(*pbyRsr & RSR_BSSIDOK)) {
 566                                 if (bDeFragRx) {
 567                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 568                                                 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 569                                                         pDevice->dev->name);
 570                                         }
 571                                 }
 572                                 return false;
 573                         }
 574                         //mike add:station mode check eapol-key challenge--->
 575                         {
 576                                 unsigned char Protocol_Version;    //802.1x Authentication
 577                                 unsigned char Packet_Type;           //802.1x Authentication
 578
 579                                 if (bIsWEP)
 580                                         cbIVOffset = 8;
 581                                 else
 582                                         cbIVOffset = 0;
 583                                 wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
 584                                         skb->data[cbIVOffset + 8 + 24 + 6 + 1];
 585                                 Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1];
 586                                 Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1 + 1];
 587                                 if (wEtherType == ETH_P_PAE) {         //Protocol Type in LLC-Header
 588                                         if (((Protocol_Version == 1) || (Protocol_Version == 2)) &&
 589                                             (Packet_Type == 3)) {  //802.1x OR eapol-key challenge frame receive
 590                                                 bRxeapol_key = true;
 591                                         }
 592                                 }
 593                         }
 594                         //mike add:station mode check eapol-key challenge<---
 595                 }
 596         }
 597
 598 // Data frame Handle
 599
 600         if (pDevice->bEnablePSMode) {
 601                 if (!IS_FC_MOREDATA((skb->data+4))) {
 602                         if (pDevice->pMgmt->bInTIMWake == true)
 603                                 pDevice->pMgmt->bInTIMWake = false;
 604                 }
 605         }
 606
 607         // Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps
 608         if (pDevice->bDiversityEnable && (FrameSize > 50) &&
 609             (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) &&
 610             pDevice->bLinkPass) {
 611                 BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0);
 612         }
 613
 614         if (pDevice->byLocalID != REV_ID_VT3253_B1)
 615                 pDevice->uCurrRSSI = *pbyRSSI;
 616
 617         pDevice->byCurrSQ = *pbySQ;
 618
 619         if ((*pbyRSSI != 0) &&
 620             (pMgmt->pCurrBSS != NULL)) {
 621                 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
 622                 // Monitor if RSSI is too strong.
 623                 pMgmt->pCurrBSS->byRSSIStatCnt++;
 624                 pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT;
 625                 pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm;
 626                 for (ii = 0; ii < RSSI_STAT_COUNT; ii++)
 627                         if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0)
 628                                 pMgmt->pCurrBSS->ldBmMAX = max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm);
 629
 630         }
 631
 632         // -----------------------------------------------
 633
 634         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && pDevice->bEnable8021x) {
 635                 unsigned char abyMacHdr[24];
 636
 637                 // Only 802.1x packet incoming allowed
 638                 if (bIsWEP)
 639                         cbIVOffset = 8;
 640                 else
 641                         cbIVOffset = 0;
 642                 wEtherType = (skb->data[cbIVOffset + 4 + 24 + 6] << 8) |
 643                         skb->data[cbIVOffset + 4 + 24 + 6 + 1];
 644
 645                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "wEtherType = %04x\n", wEtherType);
 646                 if (wEtherType == ETH_P_PAE) {
 647                         skb->dev = pDevice->apdev;
 648
 649                         if (bIsWEP) {
 650                                 // strip IV header(8)
 651                                 memcpy(&abyMacHdr[0], (skb->data + 4), 24);
 652                                 memcpy((skb->data + 4 + cbIVOffset), &abyMacHdr[0], 24);
 653                         }
 654                         skb->data +=  (cbIVOffset + 4);
 655                         skb->tail +=  (cbIVOffset + 4);
 656                         skb_put(skb, FrameSize);
 657                         skb_reset_mac_header(skb);
 658
 659                         skb->pkt_type = PACKET_OTHERHOST;
 660                         skb->protocol = htons(ETH_P_802_2);
 661                         memset(skb->cb, 0, sizeof(skb->cb));
 662                         netif_rx(skb);
 663                         return true;
 664
 665                 }
 666                 // check if 802.1x authorized
 667                 if (!(pMgmt->sNodeDBTable[iSANodeIndex].dwFlags & WLAN_STA_AUTHORIZED))
 668                         return false;
 669         }
 670
 671         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 672                 if (bIsWEP)
 673                         FrameSize -= 8;  //MIC
 674         }
 675
 676         //--------------------------------------------------------------------------------
 677         // Soft MIC
 678         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 679                 if (bIsWEP) {
 680                         __le32 *pdwMIC_L;
 681                         __le32 *pdwMIC_R;
 682                         __le32 dwMIC_Priority;
 683                         __le32 dwMICKey0 = 0, dwMICKey1 = 0;
 684                         u32 dwLocalMIC_L = 0;
 685                         u32 dwLocalMIC_R = 0;
 686                         viawget_wpa_header *wpahdr;
 687
 688                         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 689                                 dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 690                                 dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 691                         } else {
 692                                 if (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) {
 693                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 694                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 695                                 } else if ((pKey->dwKeyIndex & BIT28) == 0) {
 696                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 697                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 698                                 } else {
 699                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 700                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 701                                 }
 702                         }
 703
 704                         MIC_vInit(dwMICKey0, dwMICKey1);
 705                         MIC_vAppend((unsigned char *)&(pDevice->sRxEthHeader.abyDstAddr[0]), 12);
 706                         dwMIC_Priority = 0;
 707                         MIC_vAppend((unsigned char *)&dwMIC_Priority, 4);
 708                         // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV.
 709                         MIC_vAppend((unsigned char *)(skb->data + 4 + WLAN_HDR_ADDR3_LEN + 8),
 710                                     FrameSize - WLAN_HDR_ADDR3_LEN - 8);
 711                         MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R);
 712                         MIC_vUnInit();
 713
 714                         pdwMIC_L = (__le32 *)(skb->data + 4 + FrameSize);
 715                         pdwMIC_R = (__le32 *)(skb->data + 4 + FrameSize + 4);
 716
 717                         if ((le32_to_cpu(*pdwMIC_L) != dwLocalMIC_L) ||
 718                             (le32_to_cpu(*pdwMIC_R) != dwLocalMIC_R) ||
 719                             pDevice->bRxMICFail) {
 720                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "MIC comparison is fail!\n");
 721                                 pDevice->bRxMICFail = false;
 722                                 pDevice->s802_11Counter.TKIPLocalMICFailures++;
 723                                 if (bDeFragRx) {
 724                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 725                                                 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 726                                                         pDevice->dev->name);
 727                                         }
 728                                 }
 729                                 //2008-0409-07, <Add> by Einsn Liu
 730 #ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
 731                                 //send event to wpa_supplicant
 732                                 {
 733                                         union iwreq_data wrqu;
 734                                         struct iw_michaelmicfailure ev;
 735                                         int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits
 736
 737                                         memset(&ev, 0, sizeof(ev));
 738                                         ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
 739                                         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 740                                             (pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
 741                                             (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
 742                                                 ev.flags |= IW_MICFAILURE_PAIRWISE;
 743                                         } else {
 744                                                 ev.flags |= IW_MICFAILURE_GROUP;
 745                                         }
 746
 747                                         ev.src_addr.sa_family = ARPHRD_ETHER;
 748                                         memcpy(ev.src_addr.sa_data, pMACHeader->abyAddr2, ETH_ALEN);
 749                                         memset(&wrqu, 0, sizeof(wrqu));
 750                                         wrqu.data.length = sizeof(ev);
 751                                         wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
 752
 753                                 }
 754 #endif
 755
 756                                 if ((pDevice->bWPADEVUp) && (pDevice->skb != NULL)) {
 757                                         wpahdr = (viawget_wpa_header *)pDevice->skb->data;
 758                                         if ((pDevice->pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 759                                             (pDevice->pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
 760                                             (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
 761                                                 wpahdr->type = VIAWGET_PTK_MIC_MSG;
 762                                         } else {
 763                                                 wpahdr->type = VIAWGET_GTK_MIC_MSG;
 764                                         }
 765                                         wpahdr->resp_ie_len = 0;
 766                                         wpahdr->req_ie_len = 0;
 767                                         skb_put(pDevice->skb, sizeof(viawget_wpa_header));
 768                                         pDevice->skb->dev = pDevice->wpadev;
 769                                         skb_reset_mac_header(pDevice->skb);
 770                                         pDevice->skb->pkt_type = PACKET_HOST;
 771                                         pDevice->skb->protocol = htons(ETH_P_802_2);
 772                                         memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb));
 773                                         netif_rx(pDevice->skb);
 774                                         pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
 775                                 }
 776
 777                                 return false;
 778
 779                         }
 780                 }
 781         } //---end of SOFT MIC-----------------------------------------------------------------------
 782
 783         // ++++++++++ Reply Counter Check +++++++++++++
 784
 785         if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) ||
 786                                (pKey->byCipherSuite == KEY_CTL_CCMP))) {
 787                 if (bIsWEP) {
 788                         unsigned short wLocalTSC15_0 = 0;
 789                         unsigned long dwLocalTSC47_16 = 0;
 790                         unsigned long long       RSC = 0;
 791                         // endian issues
 792                         RSC = *((unsigned long long *)&(pKey->KeyRSC));
 793                         wLocalTSC15_0 = (unsigned short)RSC;
 794                         dwLocalTSC47_16 = (unsigned long)(RSC>>16);
 795
 796                         RSC = dwRxTSC47_16;
 797                         RSC <<= 16;
 798                         RSC += wRxTSC15_0;
 799                         memcpy(&(pKey->KeyRSC), &RSC,  sizeof(QWORD));
 800
 801                         if ((pDevice->sMgmtObj.eCurrMode == WMAC_MODE_ESS_STA) &&
 802                             (pDevice->sMgmtObj.eCurrState == WMAC_STATE_ASSOC)) {
 803                                 // check RSC
 804                                 if ((wRxTSC15_0 < wLocalTSC15_0) &&
 805                                     (dwRxTSC47_16 <= dwLocalTSC47_16) &&
 806                                     !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) {
 807                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC is illegal~~!\n ");
 808                                         if (pKey->byCipherSuite == KEY_CTL_TKIP)
 809                                                 pDevice->s802_11Counter.TKIPReplays++;
 810                                         else
 811                                                 pDevice->s802_11Counter.CCMPReplays++;
 812
 813                                         if (bDeFragRx) {
 814                                                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 815                                                         DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 816                                                                 pDevice->dev->name);
 817                                                 }
 818                                         }
 819                                         return false;
 820                                 }
 821                         }
 822                 }
 823         } // ----- End of Reply Counter Check --------------------------
 824
 825         s_vProcessRxMACHeader(pDevice, (unsigned char *)(skb->data+4), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset);
 826         FrameSize -= cbHeaderOffset;
 827         cbHeaderOffset += 4;        // 4 is Rcv buffer header
 828
 829         // Null data, framesize = 14
 830         if (FrameSize < 15)
 831                 return false;
 832
 833         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 834                 if (!s_bAPModeRxData(pDevice,
 835                                     skb,
 836                                     FrameSize,
 837                                     cbHeaderOffset,
 838                                     iSANodeIndex,
 839                                     iDANodeIndex
 840 )) {
 841                         if (bDeFragRx) {
 842                                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 843                                         DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 844                                                 pDevice->dev->name);
 845                                 }
 846                         }
 847                         return false;
 848                 }
 849         }
 850
 851         skb->data += cbHeaderOffset;
 852         skb->tail += cbHeaderOffset;
 853         skb_put(skb, FrameSize);
 854         skb->protocol = eth_type_trans(skb, skb->dev);
 855
 856         //drop frame not met IEEE 802.3
 857
 858         skb->ip_summed = CHECKSUM_NONE;
 859         pStats->rx_bytes += skb->len;
 860         pStats->rx_packets++;
 861         netif_rx(skb);
 862
 863         if (bDeFragRx) {
 864                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 865                         DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
 866                                 pDevice->dev->name);
 867                 }
 868                 return false;
 869         }
 870
 871         return true;
 872 }
 873
 874 static bool s_bAPModeRxCtl(
 875         PSDevice pDevice,
 876         unsigned char *pbyFrame,
 877         int      iSANodeIndex
 878 )
 879 {
 880         PS802_11Header      p802_11Header;
 881         CMD_STATUS          Status;
 882         PSMgmtObject        pMgmt = pDevice->pMgmt;
 883
 884         if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
 885                 p802_11Header = (PS802_11Header)(pbyFrame);
 886                 if (!IS_TYPE_MGMT(pbyFrame)) {
 887                         // Data & PS-Poll packet
 888                         // check frame class
 889                         if (iSANodeIndex > 0) {
 890                                 // frame class 3 fliter & checking
 891                                 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_AUTH) {
 892                                         // send deauth notification
 893                                         // reason = (6) class 2 received from nonauth sta
 894                                         vMgrDeAuthenBeginSta(pDevice,
 895                                                              pMgmt,
 896                                                              (unsigned char *)(p802_11Header->abyAddr2),
 897                                                              (WLAN_MGMT_REASON_CLASS2_NONAUTH),
 898                                                              &Status
 899 );
 900                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 1\n");
 901                                         return true;
 902                                 }
 903                                 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_ASSOC) {
 904                                         // send deassoc notification
 905                                         // reason = (7) class 3 received from nonassoc sta
 906                                         vMgrDisassocBeginSta(pDevice,
 907                                                              pMgmt,
 908                                                              (unsigned char *)(p802_11Header->abyAddr2),
 909                                                              (WLAN_MGMT_REASON_CLASS3_NONASSOC),
 910                                                              &Status
 911 );
 912                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDisassocBeginSta 2\n");
 913                                         return true;
 914                                 }
 915
 916                                 if (pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable) {
 917                                         // delcare received ps-poll event
 918                                         if (IS_CTL_PSPOLL(pbyFrame)) {
 919                                                 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 920                                                 bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
 921                                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 1\n");
 922                                         } else {
 923                                                 // check Data PS state
 924                                                 // if PW bit off, send out all PS bufferring packets.
 925                                                 if (!IS_FC_POWERMGT(pbyFrame)) {
 926                                                         pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
 927                                                         pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 928                                                         bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
 929                                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 2\n");
 930                                                 }
 931                                         }
 932                                 } else {
 933                                         if (IS_FC_POWERMGT(pbyFrame)) {
 934                                                 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = true;
 935                                                 // Once if STA in PS state, enable multicast bufferring
 936                                                 pMgmt->sNodeDBTable[0].bPSEnable = true;
 937                                         } else {
 938                                                 // clear all pending PS frame.
 939                                                 if (pMgmt->sNodeDBTable[iSANodeIndex].wEnQueueCnt > 0) {
 940                                                         pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
 941                                                         pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 942                                                         bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
 943                                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 3\n");
 944
 945                                                 }
 946                                         }
 947                                 }
 948                         } else {
 949                                 vMgrDeAuthenBeginSta(pDevice,
 950                                                      pMgmt,
 951                                                      (unsigned char *)(p802_11Header->abyAddr2),
 952                                                      (WLAN_MGMT_REASON_CLASS2_NONAUTH),
 953                                                      &Status
 954 );
 955                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 3\n");
 956                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "BSSID:%pM\n",
 957                                         p802_11Header->abyAddr3);
 958                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR2:%pM\n",
 959                                         p802_11Header->abyAddr2);
 960                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR1:%pM\n",
 961                                         p802_11Header->abyAddr1);
 962                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: wFrameCtl= %x\n", p802_11Header->wFrameCtl);
 963                                 VNSvInPortB(pDevice->PortOffset + MAC_REG_RCR, &(pDevice->byRxMode));
 964                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc:pDevice->byRxMode = %x\n", pDevice->byRxMode);
 965                                 return true;
 966                         }
 967                 }
 968         }
 969         return false;
 970 }
 971
 972 static bool s_bHandleRxEncryption(
 973         PSDevice     pDevice,
 974         unsigned char *pbyFrame,
 975         unsigned int FrameSize,
 976         unsigned char *pbyRsr,
 977         unsigned char *pbyNewRsr,
 978         PSKeyItem   *pKeyOut,
 979         bool *pbExtIV,
 980         unsigned short *pwRxTSC15_0,
 981         unsigned long *pdwRxTSC47_16
 982 )
 983 {
 984         unsigned int PayloadLen = FrameSize;
 985         unsigned char *pbyIV;
 986         unsigned char byKeyIdx;
 987         PSKeyItem       pKey = NULL;
 988         unsigned char byDecMode = KEY_CTL_WEP;
 989         PSMgmtObject    pMgmt = pDevice->pMgmt;
 990
 991         *pwRxTSC15_0 = 0;
 992         *pdwRxTSC47_16 = 0;
 993
 994         pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
 995         if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
 996             WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
 997                 pbyIV += 6;             // 6 is 802.11 address4
 998                 PayloadLen -= 6;
 999         }
1000         byKeyIdx = (*(pbyIV+3) & 0xc0);
1001         byKeyIdx >>= 6;
1002         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "\nKeyIdx: %d\n", byKeyIdx);
1003
1004         if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
1005             (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
1006             (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
1007             (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
1008             (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
1009                 if (((*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) &&
1010                     (pDevice->pMgmt->byCSSPK != KEY_CTL_NONE)) {
1011                         // unicast pkt use pairwise key
1012                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "unicast pkt\n");
1013                         if (KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, 0xFFFFFFFF, &pKey) == true) {
1014                                 if (pDevice->pMgmt->byCSSPK == KEY_CTL_TKIP)
1015                                         byDecMode = KEY_CTL_TKIP;
1016                                 else if (pDevice->pMgmt->byCSSPK == KEY_CTL_CCMP)
1017                                         byDecMode = KEY_CTL_CCMP;
1018                         }
1019                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "unicast pkt: %d, %p\n", byDecMode, pKey);
1020                 } else {
1021                         // use group key
1022                         KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, byKeyIdx, &pKey);
1023                         if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1024                                 byDecMode = KEY_CTL_TKIP;
1025                         else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1026                                 byDecMode = KEY_CTL_CCMP;
1027                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "group pkt: %d, %d, %p\n", byKeyIdx, byDecMode, pKey);
1028                 }
1029         }
1030         // our WEP only support Default Key
1031         if (pKey == NULL) {
1032                 // use default group key
1033                 KeybGetKey(&(pDevice->sKey), pDevice->abyBroadcastAddr, byKeyIdx, &pKey);
1034                 if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1035                         byDecMode = KEY_CTL_TKIP;
1036                 else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1037                         byDecMode = KEY_CTL_CCMP;
1038         }
1039         *pKeyOut = pKey;
1040
1041         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1042
1043         if (pKey == NULL) {
1044                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "pKey == NULL\n");
1045
1046                 return false;
1047         }
1048         if (byDecMode != pKey->byCipherSuite) {
1049
1050                 *pKeyOut = NULL;
1051                 return false;
1052         }
1053         if (byDecMode == KEY_CTL_WEP) {
1054                 // handle WEP
1055                 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1056                     (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) {
1057                         // Software WEP
1058                         // 1. 3253A
1059                         // 2. WEP 256
1060
1061                         PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1062                         memcpy(pDevice->abyPRNG, pbyIV, 3);
1063                         memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1064                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1065                         rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1066
1067                         if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen))
1068                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1069
1070                 }
1071         } else if ((byDecMode == KEY_CTL_TKIP) ||
1072                    (byDecMode == KEY_CTL_CCMP)) {
1073                 // TKIP/AES
1074
1075                 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1076                 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1077                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ExtIV: %lx\n", *pdwRxTSC47_16);
1078                 if (byDecMode == KEY_CTL_TKIP)
1079                         *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV + 2), *pbyIV));
1080                 else
1081                         *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1082
1083                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC0_15: %x\n", *pwRxTSC15_0);
1084
1085                 if ((byDecMode == KEY_CTL_TKIP) &&
1086                     (pDevice->byLocalID <= REV_ID_VT3253_A1)) {
1087                         // Software TKIP
1088                         // 1. 3253 A
1089                         PS802_11Header  pMACHeader = (PS802_11Header)(pbyFrame);
1090
1091                         TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1092                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1093                         rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1094                         if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1095                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1096                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV OK!\n");
1097                         } else {
1098                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV FAIL!!!\n");
1099                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PayloadLen = %d\n", PayloadLen);
1100                         }
1101                 }
1102         }// end of TKIP/AES
1103
1104         if ((*(pbyIV+3) & 0x20) != 0)
1105                 *pbExtIV = true;
1106         return true;
1107 }
1108
1109 static bool s_bHostWepRxEncryption(
1110         PSDevice     pDevice,
1111         unsigned char *pbyFrame,
1112         unsigned int FrameSize,
1113         unsigned char *pbyRsr,
1114         bool bOnFly,
1115         PSKeyItem    pKey,
1116         unsigned char *pbyNewRsr,
1117         bool *pbExtIV,
1118         unsigned short *pwRxTSC15_0,
1119         unsigned long *pdwRxTSC47_16
1120 )
1121 {
1122         unsigned int PayloadLen = FrameSize;
1123         unsigned char *pbyIV;
1124         unsigned char byKeyIdx;
1125         unsigned char byDecMode = KEY_CTL_WEP;
1126         PS802_11Header  pMACHeader;
1127
1128         *pwRxTSC15_0 = 0;
1129         *pdwRxTSC47_16 = 0;
1130
1131         pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1132         if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1133             WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
1134                 pbyIV += 6;             // 6 is 802.11 address4
1135                 PayloadLen -= 6;
1136         }
1137         byKeyIdx = (*(pbyIV+3) & 0xc0);
1138         byKeyIdx >>= 6;
1139         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "\nKeyIdx: %d\n", byKeyIdx);
1140
1141         if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1142                 byDecMode = KEY_CTL_TKIP;
1143         else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1144                 byDecMode = KEY_CTL_CCMP;
1145
1146         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1147
1148         if (byDecMode != pKey->byCipherSuite)
1149                 return false;
1150
1151         if (byDecMode == KEY_CTL_WEP) {
1152                 // handle WEP
1153                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "byDecMode == KEY_CTL_WEP\n");
1154
1155                 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1156                     (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true) ||
1157                     !bOnFly) {
1158                         // Software WEP
1159                         // 1. 3253A
1160                         // 2. WEP 256
1161                         // 3. NotOnFly
1162
1163                         PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1164                         memcpy(pDevice->abyPRNG, pbyIV, 3);
1165                         memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1166                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1167                         rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1168
1169                         if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen))
1170                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1171
1172                 }
1173         } else if ((byDecMode == KEY_CTL_TKIP) ||
1174                    (byDecMode == KEY_CTL_CCMP)) {
1175                 // TKIP/AES
1176
1177                 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1178                 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1179                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ExtIV: %lx\n", *pdwRxTSC47_16);
1180
1181                 if (byDecMode == KEY_CTL_TKIP)
1182                         *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1183                 else
1184                         *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1185
1186                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC0_15: %x\n", *pwRxTSC15_0);
1187
1188                 if (byDecMode == KEY_CTL_TKIP) {
1189                         if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || !bOnFly) {
1190                                 // Software TKIP
1191                                 // 1. 3253 A
1192                                 // 2. NotOnFly
1193                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "soft KEY_CTL_TKIP\n");
1194                                 pMACHeader = (PS802_11Header)(pbyFrame);
1195                                 TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1196                                 rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1197                                 rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1198                                 if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1199                                         *pbyNewRsr |= NEWRSR_DECRYPTOK;
1200                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV OK!\n");
1201                                 } else {
1202                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV FAIL!!!\n");
1203                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PayloadLen = %d\n", PayloadLen);
1204                                 }
1205                         }
1206                 }
1207
1208                 if (byDecMode == KEY_CTL_CCMP) {
1209                         if (!bOnFly) {
1210                                 // Software CCMP
1211                                 // NotOnFly
1212                                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "soft KEY_CTL_CCMP\n");
1213                                 if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) {
1214                                         *pbyNewRsr |= NEWRSR_DECRYPTOK;
1215                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "CCMP MIC compare OK!\n");
1216                                 } else {
1217                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "CCMP MIC fail!\n");
1218                                 }
1219                         }
1220                 }
1221
1222         }// end of TKIP/AES
1223
1224         if ((*(pbyIV+3) & 0x20) != 0)
1225                 *pbExtIV = true;
1226         return true;
1227 }
1228
1229 static bool s_bAPModeRxData(
1230         PSDevice pDevice,
1231         struct sk_buff *skb,
1232         unsigned int FrameSize,
1233         unsigned int cbHeaderOffset,
1234         int      iSANodeIndex,
1235         int      iDANodeIndex
1236 )
1237 {
1238         PSMgmtObject        pMgmt = pDevice->pMgmt;
1239         bool bRelayAndForward = false;
1240         bool bRelayOnly = false;
1241         unsigned char byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
1242         unsigned short wAID;
1243
1244         struct sk_buff *skbcpy = NULL;
1245
1246         if (FrameSize > CB_MAX_BUF_SIZE)
1247                 return false;
1248         // check DA
1249         if (is_multicast_ether_addr((unsigned char *)(skb->data+cbHeaderOffset))) {
1250                 if (pMgmt->sNodeDBTable[0].bPSEnable) {
1251                         skbcpy = dev_alloc_skb((int)pDevice->rx_buf_sz);
1252
1253                         // if any node in PS mode, buffer packet until DTIM.
1254                         if (skbcpy == NULL) {
1255                                 DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "relay multicast no skb available\n");
1256                         } else {
1257                                 skbcpy->dev = pDevice->dev;
1258                                 skbcpy->len = FrameSize;
1259                                 memcpy(skbcpy->data, skb->data+cbHeaderOffset, FrameSize);
1260                                 skb_queue_tail(&(pMgmt->sNodeDBTable[0].sTxPSQueue), skbcpy);
1261
1262                                 pMgmt->sNodeDBTable[0].wEnQueueCnt++;
1263                                 // set tx map
1264                                 pMgmt->abyPSTxMap[0] |= byMask[0];
1265                         }
1266                 } else {
1267                         bRelayAndForward = true;
1268                 }
1269         } else {
1270                 // check if relay
1271                 if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(skb->data+cbHeaderOffset), &iDANodeIndex)) {
1272                         if (pMgmt->sNodeDBTable[iDANodeIndex].eNodeState >= NODE_ASSOC) {
1273                                 if (pMgmt->sNodeDBTable[iDANodeIndex].bPSEnable) {
1274                                         // queue this skb until next PS tx, and then release.
1275
1276                                         skb->data += cbHeaderOffset;
1277                                         skb->tail += cbHeaderOffset;
1278                                         skb_put(skb, FrameSize);
1279                                         skb_queue_tail(&pMgmt->sNodeDBTable[iDANodeIndex].sTxPSQueue, skb);
1280                                         pMgmt->sNodeDBTable[iDANodeIndex].wEnQueueCnt++;
1281                                         wAID = pMgmt->sNodeDBTable[iDANodeIndex].wAID;
1282                                         pMgmt->abyPSTxMap[wAID >> 3] |=  byMask[wAID & 7];
1283                                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "relay: index= %d, pMgmt->abyPSTxMap[%d]= %d\n",
1284                                                 iDANodeIndex, (wAID >> 3), pMgmt->abyPSTxMap[wAID >> 3]);
1285                                         return true;
1286                                 } else {
1287                                         bRelayOnly = true;
1288                                 }
1289                         }
1290                 }
1291         }
1292
1293         if (bRelayOnly || bRelayAndForward) {
1294                 // relay this packet right now
1295                 if (bRelayAndForward)
1296                         iDANodeIndex = 0;
1297
1298                 if ((pDevice->uAssocCount > 1) && (iDANodeIndex >= 0))
1299                         ROUTEbRelay(pDevice, (unsigned char *)(skb->data + cbHeaderOffset), FrameSize, (unsigned int)iDANodeIndex);
1300
1301                 if (bRelayOnly)
1302                         return false;
1303         }
1304         // none associate, don't forward
1305         if (pDevice->uAssocCount == 0)
1306                 return false;
1307
1308         return true;
1309 }