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 const unsigned char acbyRxRate[MAX_RATE] =
  65 {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
  66
  67 /*---------------------  Static Functions  --------------------------*/
  68
  69 /*---------------------  Static Definitions -------------------------*/
  70
  71 /*---------------------  Static Functions  --------------------------*/
  72
  73 static unsigned char s_byGetRateIdx(unsigned char byRate);
  74
  75 static void
  76 s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize,
  77            PSEthernetHeader psEthHeader);
  78
  79 static void
  80 s_vProcessRxMACHeader(struct vnt_private *pDevice, unsigned char *pbyRxBufferAddr,
  81                       unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
  82                       unsigned int *pcbHeadSize);
  83
  84 static bool s_bAPModeRxCtl(
  85         struct vnt_private *pDevice,
  86         unsigned char *pbyFrame,
  87         int      iSANodeIndex
  88 );
  89
  90 static bool s_bAPModeRxData(
  91         struct vnt_private *pDevice,
  92         struct sk_buff *skb,
  93         unsigned int FrameSize,
  94         unsigned int cbHeaderOffset,
  95         int      iSANodeIndex,
  96         int      iDANodeIndex
  97 );
  98
  99 static bool s_bHandleRxEncryption(
 100         struct vnt_private *pDevice,
 101         unsigned char *pbyFrame,
 102         unsigned int FrameSize,
 103         unsigned char *pbyRsr,
 104         unsigned char *pbyNewRsr,
 105         PSKeyItem   *pKeyOut,
 106         bool *pbExtIV,
 107         unsigned short *pwRxTSC15_0,
 108         unsigned long *pdwRxTSC47_16
 109 );
 110
 111 static bool s_bHostWepRxEncryption(
 112
 113         struct vnt_private *pDevice,
 114         unsigned char *pbyFrame,
 115         unsigned int FrameSize,
 116         unsigned char *pbyRsr,
 117         bool bOnFly,
 118         PSKeyItem    pKey,
 119         unsigned char *pbyNewRsr,
 120         bool *pbExtIV,
 121         unsigned short *pwRxTSC15_0,
 122         unsigned long *pdwRxTSC47_16
 123
 124 );
 125
 126 /*---------------------  Export Variables  --------------------------*/
 127
 128 /*+
 129  *
 130  * Description:
 131  *    Translate Rcv 802.11 header to 802.3 header with Rx buffer
 132  *
 133  * Parameters:
 134  *  In:
 135  *      pDevice
 136  *      dwRxBufferAddr  - Address of Rcv Buffer
 137  *      cbPacketSize    - Rcv Packet size
 138  *      bIsWEP          - If Rcv with WEP
 139  *  Out:
 140  *      pcbHeaderSize   - 802.11 header size
 141  *
 142  * Return Value: None
 143  *
 144  -*/
 145 static void
 146 s_vProcessRxMACHeader(struct vnt_private *pDevice,
 147                       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 bool
 271 device_receive_frame(
 272         struct vnt_private *pDevice,
 273         PSRxDesc pCurrRD
 274 )
 275 {
 276         PDEVICE_RD_INFO  pRDInfo = pCurrRD->pRDInfo;
 277         struct net_device_stats *pStats = &pDevice->dev->stats;
 278         struct sk_buff *skb;
 279         PSMgmtObject    pMgmt = pDevice->pMgmt;
 280         PSRxMgmtPacket  pRxPacket = &(pDevice->pMgmt->sRxPacket);
 281         PS802_11Header  p802_11Header;
 282         unsigned char *pbyRsr;
 283         unsigned char *pbyNewRsr;
 284         unsigned char *pbyRSSI;
 285         __le64 *pqwTSFTime;
 286         unsigned short *pwFrameSize;
 287         unsigned char *pbyFrame;
 288         bool bDeFragRx = false;
 289         bool bIsWEP = false;
 290         unsigned int cbHeaderOffset;
 291         unsigned int FrameSize;
 292         unsigned short wEtherType = 0;
 293         int             iSANodeIndex = -1;
 294         int             iDANodeIndex = -1;
 295         unsigned int ii;
 296         unsigned int cbIVOffset;
 297         bool bExtIV = false;
 298         unsigned char *pbyRxSts;
 299         unsigned char *pbyRxRate;
 300         unsigned char *pbySQ;
 301         unsigned int cbHeaderSize;
 302         PSKeyItem       pKey = NULL;
 303         unsigned short wRxTSC15_0 = 0;
 304         unsigned long dwRxTSC47_16 = 0;
 305         SKeyItem        STempKey;
 306         // 802.11h RPI
 307         unsigned long dwDuration = 0;
 308         long            ldBm = 0;
 309         long            ldBmThreshold = 0;
 310         PS802_11Header pMACHeader;
 311         bool bRxeapol_key = false;
 312
 313         skb = pRDInfo->skb;
 314
 315         pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
 316                          pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 317
 318         pwFrameSize = (unsigned short *)(skb->data + 2);
 319         FrameSize = cpu_to_le16(pCurrRD->m_rd1RD1.wReqCount) - cpu_to_le16(pCurrRD->m_rd0RD0.wResCount);
 320
 321         // Max: 2312Payload + 30HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
 322         // Min (ACK): 10HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
 323         if ((FrameSize > 2364) || (FrameSize <= 32)) {
 324                 // Frame Size error drop this packet.
 325                 pr_debug("---------- WRONG Length 1\n");
 326                 return false;
 327         }
 328
 329         pbyRxSts = (unsigned char *)(skb->data);
 330         pbyRxRate = (unsigned char *)(skb->data + 1);
 331         pbyRsr = (unsigned char *)(skb->data + FrameSize - 1);
 332         pbyRSSI = (unsigned char *)(skb->data + FrameSize - 2);
 333         pbyNewRsr = (unsigned char *)(skb->data + FrameSize - 3);
 334         pbySQ = (unsigned char *)(skb->data + FrameSize - 4);
 335         pqwTSFTime = (__le64 *)(skb->data + FrameSize - 12);
 336         pbyFrame = (unsigned char *)(skb->data + 4);
 337
 338         // get packet size
 339         FrameSize = cpu_to_le16(*pwFrameSize);
 340
 341         if ((FrameSize > 2346)|(FrameSize < 14)) { // Max: 2312Payload + 30HD +4CRC
 342                 // Min: 14 bytes ACK
 343                 pr_debug("---------- WRONG Length 2\n");
 344                 return false;
 345         }
 346
 347         // update receive statistic counter
 348         STAvUpdateRDStatCounter(&pDevice->scStatistic,
 349                                 *pbyRsr,
 350                                 *pbyNewRsr,
 351                                 *pbyRxRate,
 352                                 pbyFrame,
 353                                 FrameSize);
 354
 355         pMACHeader = (PS802_11Header)((unsigned char *)(skb->data) + 8);
 356
 357         if (pDevice->bMeasureInProgress) {
 358                 if ((*pbyRsr & RSR_CRCOK) != 0)
 359                         pDevice->byBasicMap |= 0x01;
 360
 361                 dwDuration = (FrameSize << 4);
 362                 dwDuration /= acbyRxRate[*pbyRxRate%MAX_RATE];
 363                 if (*pbyRxRate <= RATE_11M) {
 364                         if (*pbyRxSts & 0x01) {
 365                                 // long preamble
 366                                 dwDuration += 192;
 367                         } else {
 368                                 // short preamble
 369                                 dwDuration += 96;
 370                         }
 371                 } else {
 372                         dwDuration += 16;
 373                 }
 374                 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
 375                 ldBmThreshold = -57;
 376                 for (ii = 7; ii > 0;) {
 377                         if (ldBm > ldBmThreshold)
 378                                 break;
 379
 380                         ldBmThreshold -= 5;
 381                         ii--;
 382                 }
 383                 pDevice->dwRPIs[ii] += dwDuration;
 384                 return false;
 385         }
 386
 387         if (!is_multicast_ether_addr(pbyFrame)) {
 388                 if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (PS802_11Header)(skb->data + 4))) {
 389                         pDevice->s802_11Counter.FrameDuplicateCount++;
 390                         return false;
 391                 }
 392         }
 393
 394         // Use for TKIP MIC
 395         s_vGetDASA(skb->data+4, &cbHeaderSize, &pDevice->sRxEthHeader);
 396
 397         // filter packet send from myself
 398         if (ether_addr_equal(pDevice->sRxEthHeader.abySrcAddr,
 399                              pDevice->abyCurrentNetAddr))
 400                 return false;
 401
 402         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) {
 403                 if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
 404                         p802_11Header = (PS802_11Header)(pbyFrame);
 405                         // get SA NodeIndex
 406                         if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(p802_11Header->abyAddr2), &iSANodeIndex)) {
 407                                 pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies;
 408                                 pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0;
 409                         }
 410                 }
 411         }
 412
 413         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 414                 if (s_bAPModeRxCtl(pDevice, pbyFrame, iSANodeIndex))
 415                         return false;
 416         }
 417
 418         if (IS_FC_WEP(pbyFrame)) {
 419                 bool bRxDecryOK = false;
 420
 421                 pr_debug("rx WEP pkt\n");
 422                 bIsWEP = true;
 423                 if ((pDevice->bEnableHostWEP) && (iSANodeIndex >= 0)) {
 424                         pKey = &STempKey;
 425                         pKey->byCipherSuite = pMgmt->sNodeDBTable[iSANodeIndex].byCipherSuite;
 426                         pKey->dwKeyIndex = pMgmt->sNodeDBTable[iSANodeIndex].dwKeyIndex;
 427                         pKey->uKeyLength = pMgmt->sNodeDBTable[iSANodeIndex].uWepKeyLength;
 428                         pKey->dwTSC47_16 = pMgmt->sNodeDBTable[iSANodeIndex].dwTSC47_16;
 429                         pKey->wTSC15_0 = pMgmt->sNodeDBTable[iSANodeIndex].wTSC15_0;
 430                         memcpy(pKey->abyKey,
 431                                &pMgmt->sNodeDBTable[iSANodeIndex].abyWepKey[0],
 432                                pKey->uKeyLength
 433 );
 434
 435                         bRxDecryOK = s_bHostWepRxEncryption(pDevice,
 436                                                             pbyFrame,
 437                                                             FrameSize,
 438                                                             pbyRsr,
 439                                                             pMgmt->sNodeDBTable[iSANodeIndex].bOnFly,
 440                                                             pKey,
 441                                                             pbyNewRsr,
 442                                                             &bExtIV,
 443                                                             &wRxTSC15_0,
 444                                                             &dwRxTSC47_16);
 445                 } else {
 446                         bRxDecryOK = s_bHandleRxEncryption(pDevice,
 447                                                            pbyFrame,
 448                                                            FrameSize,
 449                                                            pbyRsr,
 450                                                            pbyNewRsr,
 451                                                            &pKey,
 452                                                            &bExtIV,
 453                                                            &wRxTSC15_0,
 454                                                            &dwRxTSC47_16);
 455                 }
 456
 457                 if (bRxDecryOK) {
 458                         if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) {
 459                                 pr_debug("ICV Fail\n");
 460                                 if ((pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
 461                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
 462                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
 463                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
 464                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
 465                                         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP))
 466                                                 pDevice->s802_11Counter.TKIPICVErrors++;
 467                                         else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
 468                                                 pDevice->s802_11Counter.CCMPDecryptErrors++;
 469                                 }
 470                                 return false;
 471                         }
 472                 } else {
 473                         pr_debug("WEP Func Fail\n");
 474                         return false;
 475                 }
 476                 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
 477                         FrameSize -= 8;         // Message Integrity Code
 478                 else
 479                         FrameSize -= 4;         // 4 is ICV
 480         }
 481
 482         //
 483         // RX OK
 484         //
 485         //remove the CRC length
 486         FrameSize -= ETH_FCS_LEN;
 487
 488         if ((!(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI))) && // unicast address
 489             (IS_FRAGMENT_PKT((skb->data+4)))
 490 ) {
 491                 // defragment
 492                 bDeFragRx = WCTLbHandleFragment(pDevice, (PS802_11Header)(skb->data+4), FrameSize, bIsWEP, bExtIV);
 493                 pDevice->s802_11Counter.ReceivedFragmentCount++;
 494                 if (bDeFragRx) {
 495                         // defrag complete
 496                         skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb;
 497                         FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength;
 498
 499                 } else {
 500                         return false;
 501                 }
 502         }
 503
 504 // Management & Control frame Handle
 505         if ((IS_TYPE_DATA((skb->data+4))) == false) {
 506                 // Handle Control & Manage Frame
 507
 508                 if (IS_TYPE_MGMT((skb->data+4))) {
 509                         unsigned char *pbyData1;
 510                         unsigned char *pbyData2;
 511
 512                         pRxPacket->p80211Header = (PUWLAN_80211HDR)(skb->data+4);
 513                         pRxPacket->cbMPDULen = FrameSize;
 514                         pRxPacket->uRSSI = *pbyRSSI;
 515                         pRxPacket->bySQ = *pbySQ;
 516                         pRxPacket->qwLocalTSF = le64_to_cpu(*pqwTSFTime);
 517                         if (bIsWEP) {
 518                                 // strip IV
 519                                 pbyData1 = WLAN_HDR_A3_DATA_PTR(skb->data+4);
 520                                 pbyData2 = WLAN_HDR_A3_DATA_PTR(skb->data+4) + 4;
 521                                 for (ii = 0; ii < (FrameSize - 4); ii++) {
 522                                         *pbyData1 = *pbyData2;
 523                                         pbyData1++;
 524                                         pbyData2++;
 525                                 }
 526                         }
 527                         pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate);
 528                         pRxPacket->byRxChannel = (*pbyRxSts) >> 2;
 529
 530                         vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
 531
 532                         // hostap Deamon handle 802.11 management
 533                         if (pDevice->bEnableHostapd) {
 534                                 skb->dev = pDevice->apdev;
 535                                 skb->data += 4;
 536                                 skb->tail += 4;
 537                                 skb_put(skb, FrameSize);
 538                                 skb_reset_mac_header(skb);
 539                                 skb->pkt_type = PACKET_OTHERHOST;
 540                                 skb->protocol = htons(ETH_P_802_2);
 541                                 memset(skb->cb, 0, sizeof(skb->cb));
 542                                 netif_rx(skb);
 543                                 return true;
 544                         }
 545                 }
 546
 547                 return false;
 548         } else {
 549                 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 550                         //In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC.
 551                         if (!(*pbyRsr & RSR_BSSIDOK)) {
 552                                 if (bDeFragRx) {
 553                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 554                                                 pr_err("%s: can not alloc more frag bufs\n",
 555                                                        pDevice->dev->name);
 556                                         }
 557                                 }
 558                                 return false;
 559                         }
 560                 } else {
 561                         // discard DATA packet while not associate || BSSID error
 562                         if (!pDevice->bLinkPass || !(*pbyRsr & RSR_BSSIDOK)) {
 563                                 if (bDeFragRx) {
 564                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 565                                                 pr_err("%s: can not alloc more frag bufs\n",
 566                                                        pDevice->dev->name);
 567                                         }
 568                                 }
 569                                 return false;
 570                         }
 571                         //mike add:station mode check eapol-key challenge--->
 572                         {
 573                                 unsigned char Protocol_Version;    //802.1x Authentication
 574                                 unsigned char Packet_Type;           //802.1x Authentication
 575
 576                                 if (bIsWEP)
 577                                         cbIVOffset = 8;
 578                                 else
 579                                         cbIVOffset = 0;
 580                                 wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
 581                                         skb->data[cbIVOffset + 8 + 24 + 6 + 1];
 582                                 Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1];
 583                                 Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1 + 1];
 584                                 if (wEtherType == ETH_P_PAE) {         //Protocol Type in LLC-Header
 585                                         if (((Protocol_Version == 1) || (Protocol_Version == 2)) &&
 586                                             (Packet_Type == 3)) {  //802.1x OR eapol-key challenge frame receive
 587                                                 bRxeapol_key = true;
 588                                         }
 589                                 }
 590                         }
 591                         //mike add:station mode check eapol-key challenge<---
 592                 }
 593         }
 594
 595 // Data frame Handle
 596
 597         if (pDevice->bEnablePSMode) {
 598                 if (!IS_FC_MOREDATA((skb->data+4))) {
 599                         if (pDevice->pMgmt->bInTIMWake == true)
 600                                 pDevice->pMgmt->bInTIMWake = false;
 601                 }
 602         }
 603
 604         // Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps
 605         if (pDevice->bDiversityEnable && (FrameSize > 50) &&
 606             (pDevice->op_mode == NL80211_IFTYPE_STATION) &&
 607             pDevice->bLinkPass) {
 608                 BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0);
 609         }
 610
 611         if (pDevice->byLocalID != REV_ID_VT3253_B1)
 612                 pDevice->uCurrRSSI = *pbyRSSI;
 613
 614         pDevice->byCurrSQ = *pbySQ;
 615
 616         if ((*pbyRSSI != 0) &&
 617             (pMgmt->pCurrBSS != NULL)) {
 618                 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
 619                 // Monitor if RSSI is too strong.
 620                 pMgmt->pCurrBSS->byRSSIStatCnt++;
 621                 pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT;
 622                 pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm;
 623                 for (ii = 0; ii < RSSI_STAT_COUNT; ii++)
 624                         if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0)
 625                                 pMgmt->pCurrBSS->ldBmMAX = max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm);
 626
 627         }
 628
 629         // -----------------------------------------------
 630
 631         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && pDevice->bEnable8021x) {
 632                 unsigned char abyMacHdr[24];
 633
 634                 // Only 802.1x packet incoming allowed
 635                 if (bIsWEP)
 636                         cbIVOffset = 8;
 637                 else
 638                         cbIVOffset = 0;
 639                 wEtherType = (skb->data[cbIVOffset + 4 + 24 + 6] << 8) |
 640                         skb->data[cbIVOffset + 4 + 24 + 6 + 1];
 641
 642                 pr_debug("wEtherType = %04x\n", wEtherType);
 643                 if (wEtherType == ETH_P_PAE) {
 644                         skb->dev = pDevice->apdev;
 645
 646                         if (bIsWEP) {
 647                                 // strip IV header(8)
 648                                 memcpy(&abyMacHdr[0], (skb->data + 4), 24);
 649                                 memcpy((skb->data + 4 + cbIVOffset), &abyMacHdr[0], 24);
 650                         }
 651                         skb->data +=  (cbIVOffset + 4);
 652                         skb->tail +=  (cbIVOffset + 4);
 653                         skb_put(skb, FrameSize);
 654                         skb_reset_mac_header(skb);
 655
 656                         skb->pkt_type = PACKET_OTHERHOST;
 657                         skb->protocol = htons(ETH_P_802_2);
 658                         memset(skb->cb, 0, sizeof(skb->cb));
 659                         netif_rx(skb);
 660                         return true;
 661
 662                 }
 663                 // check if 802.1x authorized
 664                 if (!(pMgmt->sNodeDBTable[iSANodeIndex].dwFlags & WLAN_STA_AUTHORIZED))
 665                         return false;
 666         }
 667
 668         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 669                 if (bIsWEP)
 670                         FrameSize -= 8;  //MIC
 671         }
 672
 673         //--------------------------------------------------------------------------------
 674         // Soft MIC
 675         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 676                 if (bIsWEP) {
 677                         __le32 *pdwMIC_L;
 678                         __le32 *pdwMIC_R;
 679                         __le32 dwMIC_Priority;
 680                         __le32 dwMICKey0 = 0, dwMICKey1 = 0;
 681                         u32 dwLocalMIC_L = 0;
 682                         u32 dwLocalMIC_R = 0;
 683                         viawget_wpa_header *wpahdr;
 684
 685                         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 686                                 dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 687                                 dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 688                         } else {
 689                                 if (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) {
 690                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 691                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 692                                 } else if ((pKey->dwKeyIndex & BIT28) == 0) {
 693                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 694                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 695                                 } else {
 696                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 697                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 698                                 }
 699                         }
 700
 701                         MIC_vInit(dwMICKey0, dwMICKey1);
 702                         MIC_vAppend((unsigned char *)&(pDevice->sRxEthHeader.abyDstAddr[0]), 12);
 703                         dwMIC_Priority = 0;
 704                         MIC_vAppend((unsigned char *)&dwMIC_Priority, 4);
 705                         // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV.
 706                         MIC_vAppend((unsigned char *)(skb->data + 4 + WLAN_HDR_ADDR3_LEN + 8),
 707                                     FrameSize - WLAN_HDR_ADDR3_LEN - 8);
 708                         MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R);
 709                         MIC_vUnInit();
 710
 711                         pdwMIC_L = (__le32 *)(skb->data + 4 + FrameSize);
 712                         pdwMIC_R = (__le32 *)(skb->data + 4 + FrameSize + 4);
 713
 714                         if ((le32_to_cpu(*pdwMIC_L) != dwLocalMIC_L) ||
 715                             (le32_to_cpu(*pdwMIC_R) != dwLocalMIC_R) ||
 716                             pDevice->bRxMICFail) {
 717                                 pr_debug("MIC comparison is fail!\n");
 718                                 pDevice->bRxMICFail = false;
 719                                 pDevice->s802_11Counter.TKIPLocalMICFailures++;
 720                                 if (bDeFragRx) {
 721                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 722                                                 pr_err("%s: can not alloc more frag bufs\n",
 723                                                        pDevice->dev->name);
 724                                         }
 725                                 }
 726                                 //2008-0409-07, <Add> by Einsn Liu
 727 #ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
 728                                 //send event to wpa_supplicant
 729                                 {
 730                                         union iwreq_data wrqu;
 731                                         struct iw_michaelmicfailure ev;
 732                                         int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits
 733
 734                                         memset(&ev, 0, sizeof(ev));
 735                                         ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
 736                                         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 737                                             (pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
 738                                             (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
 739                                                 ev.flags |= IW_MICFAILURE_PAIRWISE;
 740                                         } else {
 741                                                 ev.flags |= IW_MICFAILURE_GROUP;
 742                                         }
 743
 744                                         ev.src_addr.sa_family = ARPHRD_ETHER;
 745                                         memcpy(ev.src_addr.sa_data, pMACHeader->abyAddr2, ETH_ALEN);
 746                                         memset(&wrqu, 0, sizeof(wrqu));
 747                                         wrqu.data.length = sizeof(ev);
 748                                         wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
 749
 750                                 }
 751 #endif
 752
 753                                 if ((pDevice->bWPADEVUp) && (pDevice->skb != NULL)) {
 754                                         wpahdr = (viawget_wpa_header *)pDevice->skb->data;
 755                                         if ((pDevice->pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 756                                             (pDevice->pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
 757                                             (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
 758                                                 wpahdr->type = VIAWGET_PTK_MIC_MSG;
 759                                         } else {
 760                                                 wpahdr->type = VIAWGET_GTK_MIC_MSG;
 761                                         }
 762                                         wpahdr->resp_ie_len = 0;
 763                                         wpahdr->req_ie_len = 0;
 764                                         skb_put(pDevice->skb, sizeof(viawget_wpa_header));
 765                                         pDevice->skb->dev = pDevice->wpadev;
 766                                         skb_reset_mac_header(pDevice->skb);
 767                                         pDevice->skb->pkt_type = PACKET_HOST;
 768                                         pDevice->skb->protocol = htons(ETH_P_802_2);
 769                                         memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb));
 770                                         netif_rx(pDevice->skb);
 771                                         pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
 772                                 }
 773
 774                                 return false;
 775
 776                         }
 777                 }
 778         } //---end of SOFT MIC-----------------------------------------------------------------------
 779
 780         // ++++++++++ Reply Counter Check +++++++++++++
 781
 782         if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) ||
 783                                (pKey->byCipherSuite == KEY_CTL_CCMP))) {
 784                 if (bIsWEP) {
 785                         unsigned short wLocalTSC15_0 = 0;
 786                         unsigned long dwLocalTSC47_16 = 0;
 787                         unsigned long long       RSC = 0;
 788                         // endian issues
 789                         RSC = *((unsigned long long *)&(pKey->KeyRSC));
 790                         wLocalTSC15_0 = (unsigned short)RSC;
 791                         dwLocalTSC47_16 = (unsigned long)(RSC>>16);
 792
 793                         RSC = dwRxTSC47_16;
 794                         RSC <<= 16;
 795                         RSC += wRxTSC15_0;
 796                         pKey->KeyRSC = RSC;
 797
 798                         if ((pDevice->sMgmtObj.eCurrMode == WMAC_MODE_ESS_STA) &&
 799                             (pDevice->sMgmtObj.eCurrState == WMAC_STATE_ASSOC)) {
 800                                 // check RSC
 801                                 if ((wRxTSC15_0 < wLocalTSC15_0) &&
 802                                     (dwRxTSC47_16 <= dwLocalTSC47_16) &&
 803                                     !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) {
 804                                         pr_debug("TSC is illegal~~!\n ");
 805                                         if (pKey->byCipherSuite == KEY_CTL_TKIP)
 806                                                 pDevice->s802_11Counter.TKIPReplays++;
 807                                         else
 808                                                 pDevice->s802_11Counter.CCMPReplays++;
 809
 810                                         if (bDeFragRx) {
 811                                                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 812                                                         pr_err("%s: can not alloc more frag bufs\n",
 813                                                                pDevice->dev->name);
 814                                                 }
 815                                         }
 816                                         return false;
 817                                 }
 818                         }
 819                 }
 820         } // ----- End of Reply Counter Check --------------------------
 821
 822         s_vProcessRxMACHeader(pDevice, (unsigned char *)(skb->data+4), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset);
 823         FrameSize -= cbHeaderOffset;
 824         cbHeaderOffset += 4;        // 4 is Rcv buffer header
 825
 826         // Null data, framesize = 14
 827         if (FrameSize < 15)
 828                 return false;
 829
 830         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 831                 if (!s_bAPModeRxData(pDevice,
 832                                     skb,
 833                                     FrameSize,
 834                                     cbHeaderOffset,
 835                                     iSANodeIndex,
 836                                     iDANodeIndex
 837 )) {
 838                         if (bDeFragRx) {
 839                                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 840                                         pr_err("%s: can not alloc more frag bufs\n",
 841                                                pDevice->dev->name);
 842                                 }
 843                         }
 844                         return false;
 845                 }
 846         }
 847
 848         skb->data += cbHeaderOffset;
 849         skb->tail += cbHeaderOffset;
 850         skb_put(skb, FrameSize);
 851         skb->protocol = eth_type_trans(skb, skb->dev);
 852
 853         //drop frame not met IEEE 802.3
 854
 855         skb->ip_summed = CHECKSUM_NONE;
 856         pStats->rx_bytes += skb->len;
 857         pStats->rx_packets++;
 858         netif_rx(skb);
 859
 860         if (bDeFragRx) {
 861                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 862                         pr_err("%s: can not alloc more frag bufs\n",
 863                                pDevice->dev->name);
 864                 }
 865                 return false;
 866         }
 867
 868         return true;
 869 }
 870
 871 static bool s_bAPModeRxCtl(
 872         struct vnt_private *pDevice,
 873         unsigned char *pbyFrame,
 874         int      iSANodeIndex
 875 )
 876 {
 877         PS802_11Header      p802_11Header;
 878         CMD_STATUS          Status;
 879         PSMgmtObject        pMgmt = pDevice->pMgmt;
 880
 881         if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
 882                 p802_11Header = (PS802_11Header)(pbyFrame);
 883                 if (!IS_TYPE_MGMT(pbyFrame)) {
 884                         // Data & PS-Poll packet
 885                         // check frame class
 886                         if (iSANodeIndex > 0) {
 887                                 // frame class 3 fliter & checking
 888                                 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_AUTH) {
 889                                         // send deauth notification
 890                                         // reason = (6) class 2 received from nonauth sta
 891                                         vMgrDeAuthenBeginSta(pDevice,
 892                                                              pMgmt,
 893                                                              (unsigned char *)(p802_11Header->abyAddr2),
 894                                                              (WLAN_MGMT_REASON_CLASS2_NONAUTH),
 895                                                              &Status
 896 );
 897                                         pr_debug("dpc: send vMgrDeAuthenBeginSta 1\n");
 898                                         return true;
 899                                 }
 900                                 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_ASSOC) {
 901                                         // send deassoc notification
 902                                         // reason = (7) class 3 received from nonassoc sta
 903                                         vMgrDisassocBeginSta(pDevice,
 904                                                              pMgmt,
 905                                                              (unsigned char *)(p802_11Header->abyAddr2),
 906                                                              (WLAN_MGMT_REASON_CLASS3_NONASSOC),
 907                                                              &Status
 908 );
 909                                         pr_debug("dpc: send vMgrDisassocBeginSta 2\n");
 910                                         return true;
 911                                 }
 912
 913                                 if (pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable) {
 914                                         // delcare received ps-poll event
 915                                         if (IS_CTL_PSPOLL(pbyFrame)) {
 916                                                 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 917                                                 bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
 918                                                 pr_debug("dpc: WLAN_CMD_RX_PSPOLL 1\n");
 919                                         } else {
 920                                                 // check Data PS state
 921                                                 // if PW bit off, send out all PS bufferring packets.
 922                                                 if (!IS_FC_POWERMGT(pbyFrame)) {
 923                                                         pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
 924                                                         pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 925                                                         bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
 926                                                         pr_debug("dpc: WLAN_CMD_RX_PSPOLL 2\n");
 927                                                 }
 928                                         }
 929                                 } else {
 930                                         if (IS_FC_POWERMGT(pbyFrame)) {
 931                                                 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = true;
 932                                                 // Once if STA in PS state, enable multicast bufferring
 933                                                 pMgmt->sNodeDBTable[0].bPSEnable = true;
 934                                         } else {
 935                                                 // clear all pending PS frame.
 936                                                 if (pMgmt->sNodeDBTable[iSANodeIndex].wEnQueueCnt > 0) {
 937                                                         pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
 938                                                         pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 939                                                         bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
 940                                                         pr_debug("dpc: WLAN_CMD_RX_PSPOLL 3\n");
 941
 942                                                 }
 943                                         }
 944                                 }
 945                         } else {
 946                                 vMgrDeAuthenBeginSta(pDevice,
 947                                                      pMgmt,
 948                                                      (unsigned char *)(p802_11Header->abyAddr2),
 949                                                      (WLAN_MGMT_REASON_CLASS2_NONAUTH),
 950                                                      &Status
 951 );
 952                                 pr_debug("dpc: send vMgrDeAuthenBeginSta 3\n");
 953                                 pr_debug("BSSID:%pM\n",
 954                                          p802_11Header->abyAddr3);
 955                                 pr_debug("ADDR2:%pM\n",
 956                                          p802_11Header->abyAddr2);
 957                                 pr_debug("ADDR1:%pM\n",
 958                                          p802_11Header->abyAddr1);
 959                                 pr_debug("dpc: wFrameCtl= %x\n",
 960                                          p802_11Header->wFrameCtl);
 961                                 VNSvInPortB(pDevice->PortOffset + MAC_REG_RCR, &(pDevice->byRxMode));
 962                                 pr_debug("dpc:pDevice->byRxMode = %x\n",
 963                                          pDevice->byRxMode);
 964                                 return true;
 965                         }
 966                 }
 967         }
 968         return false;
 969 }
 970
 971 static bool s_bHandleRxEncryption(
 972         struct vnt_private *pDevice,
 973         unsigned char *pbyFrame,
 974         unsigned int FrameSize,
 975         unsigned char *pbyRsr,
 976         unsigned char *pbyNewRsr,
 977         PSKeyItem   *pKeyOut,
 978         bool *pbExtIV,
 979         unsigned short *pwRxTSC15_0,
 980         unsigned long *pdwRxTSC47_16
 981 )
 982 {
 983         unsigned int PayloadLen = FrameSize;
 984         unsigned char *pbyIV;
 985         unsigned char byKeyIdx;
 986         PSKeyItem       pKey = NULL;
 987         unsigned char byDecMode = KEY_CTL_WEP;
 988         PSMgmtObject    pMgmt = pDevice->pMgmt;
 989
 990         *pwRxTSC15_0 = 0;
 991         *pdwRxTSC47_16 = 0;
 992
 993         pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
 994         if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
 995             WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
 996                 pbyIV += 6;             // 6 is 802.11 address4
 997                 PayloadLen -= 6;
 998         }
 999         byKeyIdx = (*(pbyIV+3) & 0xc0);
1000         byKeyIdx >>= 6;
1001         pr_debug("\nKeyIdx: %d\n", byKeyIdx);
1002
1003         if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
1004             (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
1005             (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
1006             (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
1007             (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
1008                 if (((*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) &&
1009                     (pDevice->pMgmt->byCSSPK != KEY_CTL_NONE)) {
1010                         // unicast pkt use pairwise key
1011                         pr_debug("unicast pkt\n");
1012                         if (KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, 0xFFFFFFFF, &pKey) == true) {
1013                                 if (pDevice->pMgmt->byCSSPK == KEY_CTL_TKIP)
1014                                         byDecMode = KEY_CTL_TKIP;
1015                                 else if (pDevice->pMgmt->byCSSPK == KEY_CTL_CCMP)
1016                                         byDecMode = KEY_CTL_CCMP;
1017                         }
1018                         pr_debug("unicast pkt: %d, %p\n", byDecMode, pKey);
1019                 } else {
1020                         // use group key
1021                         KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, byKeyIdx, &pKey);
1022                         if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1023                                 byDecMode = KEY_CTL_TKIP;
1024                         else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1025                                 byDecMode = KEY_CTL_CCMP;
1026                         pr_debug("group pkt: %d, %d, %p\n",
1027                                  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         pr_debug("AES:%d %d %d\n",
1042                  pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1043
1044         if (pKey == NULL) {
1045                 pr_debug("pKey == NULL\n");
1046
1047                 return false;
1048         }
1049         if (byDecMode != pKey->byCipherSuite) {
1050
1051                 *pKeyOut = NULL;
1052                 return false;
1053         }
1054         if (byDecMode == KEY_CTL_WEP) {
1055                 // handle WEP
1056                 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1057                     (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) {
1058                         // Software WEP
1059                         // 1. 3253A
1060                         // 2. WEP 256
1061
1062                         PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1063                         memcpy(pDevice->abyPRNG, pbyIV, 3);
1064                         memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1065                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1066                         rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1067
1068                         if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen))
1069                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1070
1071                 }
1072         } else if ((byDecMode == KEY_CTL_TKIP) ||
1073                    (byDecMode == KEY_CTL_CCMP)) {
1074                 // TKIP/AES
1075
1076                 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1077                 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1078                 pr_debug("ExtIV: %lx\n", *pdwRxTSC47_16);
1079                 if (byDecMode == KEY_CTL_TKIP)
1080                         *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV + 2), *pbyIV));
1081                 else
1082                         *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1083
1084                 pr_debug("TSC0_15: %x\n", *pwRxTSC15_0);
1085
1086                 if ((byDecMode == KEY_CTL_TKIP) &&
1087                     (pDevice->byLocalID <= REV_ID_VT3253_A1)) {
1088                         // Software TKIP
1089                         // 1. 3253 A
1090                         PS802_11Header  pMACHeader = (PS802_11Header)(pbyFrame);
1091
1092                         TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1093                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1094                         rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1095                         if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1096                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1097                                 pr_debug("ICV OK!\n");
1098                         } else {
1099                                 pr_debug("ICV FAIL!!!\n");
1100                                 pr_debug("PayloadLen = %d\n", PayloadLen);
1101                         }
1102                 }
1103         }// end of TKIP/AES
1104
1105         if ((*(pbyIV+3) & 0x20) != 0)
1106                 *pbExtIV = true;
1107         return true;
1108 }
1109
1110 static bool s_bHostWepRxEncryption(
1111         struct vnt_private *pDevice,
1112         unsigned char *pbyFrame,
1113         unsigned int FrameSize,
1114         unsigned char *pbyRsr,
1115         bool bOnFly,
1116         PSKeyItem    pKey,
1117         unsigned char *pbyNewRsr,
1118         bool *pbExtIV,
1119         unsigned short *pwRxTSC15_0,
1120         unsigned long *pdwRxTSC47_16
1121 )
1122 {
1123         unsigned int PayloadLen = FrameSize;
1124         unsigned char *pbyIV;
1125         unsigned char byKeyIdx;
1126         unsigned char byDecMode = KEY_CTL_WEP;
1127         PS802_11Header  pMACHeader;
1128
1129         *pwRxTSC15_0 = 0;
1130         *pdwRxTSC47_16 = 0;
1131
1132         pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1133         if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1134             WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
1135                 pbyIV += 6;             // 6 is 802.11 address4
1136                 PayloadLen -= 6;
1137         }
1138         byKeyIdx = (*(pbyIV+3) & 0xc0);
1139         byKeyIdx >>= 6;
1140         pr_debug("\nKeyIdx: %d\n", byKeyIdx);
1141
1142         if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1143                 byDecMode = KEY_CTL_TKIP;
1144         else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1145                 byDecMode = KEY_CTL_CCMP;
1146
1147         pr_debug("AES:%d %d %d\n",
1148                  pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1149
1150         if (byDecMode != pKey->byCipherSuite)
1151                 return false;
1152
1153         if (byDecMode == KEY_CTL_WEP) {
1154                 // handle WEP
1155                 pr_debug("byDecMode == KEY_CTL_WEP\n");
1156
1157                 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1158                     (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true) ||
1159                     !bOnFly) {
1160                         // Software WEP
1161                         // 1. 3253A
1162                         // 2. WEP 256
1163                         // 3. NotOnFly
1164
1165                         PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1166                         memcpy(pDevice->abyPRNG, pbyIV, 3);
1167                         memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1168                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1169                         rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1170
1171                         if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen))
1172                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1173
1174                 }
1175         } else if ((byDecMode == KEY_CTL_TKIP) ||
1176                    (byDecMode == KEY_CTL_CCMP)) {
1177                 // TKIP/AES
1178
1179                 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1180                 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1181                 pr_debug("ExtIV: %lx\n", *pdwRxTSC47_16);
1182
1183                 if (byDecMode == KEY_CTL_TKIP)
1184                         *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1185                 else
1186                         *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1187
1188                 pr_debug("TSC0_15: %x\n", *pwRxTSC15_0);
1189
1190                 if (byDecMode == KEY_CTL_TKIP) {
1191                         if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || !bOnFly) {
1192                                 // Software TKIP
1193                                 // 1. 3253 A
1194                                 // 2. NotOnFly
1195                                 pr_debug("soft KEY_CTL_TKIP\n");
1196                                 pMACHeader = (PS802_11Header)(pbyFrame);
1197                                 TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1198                                 rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1199                                 rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1200                                 if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1201                                         *pbyNewRsr |= NEWRSR_DECRYPTOK;
1202                                         pr_debug("ICV OK!\n");
1203                                 } else {
1204                                         pr_debug("ICV FAIL!!!\n");
1205                                         pr_debug("PayloadLen = %d\n",
1206                                                  PayloadLen);
1207                                 }
1208                         }
1209                 }
1210
1211                 if (byDecMode == KEY_CTL_CCMP) {
1212                         if (!bOnFly) {
1213                                 // Software CCMP
1214                                 // NotOnFly
1215                                 pr_debug("soft KEY_CTL_CCMP\n");
1216                                 if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) {
1217                                         *pbyNewRsr |= NEWRSR_DECRYPTOK;
1218                                         pr_debug("CCMP MIC compare OK!\n");
1219                                 } else {
1220                                         pr_debug("CCMP MIC fail!\n");
1221                                 }
1222                         }
1223                 }
1224
1225         }// end of TKIP/AES
1226
1227         if ((*(pbyIV+3) & 0x20) != 0)
1228                 *pbExtIV = true;
1229         return true;
1230 }
1231
1232 static bool s_bAPModeRxData(
1233         struct vnt_private *pDevice,
1234         struct sk_buff *skb,
1235         unsigned int FrameSize,
1236         unsigned int cbHeaderOffset,
1237         int      iSANodeIndex,
1238         int      iDANodeIndex
1239 )
1240 {
1241         PSMgmtObject        pMgmt = pDevice->pMgmt;
1242         bool bRelayAndForward = false;
1243         bool bRelayOnly = false;
1244         unsigned char byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
1245         unsigned short wAID;
1246
1247         struct sk_buff *skbcpy = NULL;
1248
1249         if (FrameSize > CB_MAX_BUF_SIZE)
1250                 return false;
1251         // check DA
1252         if (is_multicast_ether_addr((unsigned char *)(skb->data+cbHeaderOffset))) {
1253                 if (pMgmt->sNodeDBTable[0].bPSEnable) {
1254                         skbcpy = dev_alloc_skb((int)pDevice->rx_buf_sz);
1255
1256                         // if any node in PS mode, buffer packet until DTIM.
1257                         if (skbcpy == NULL) {
1258                                 pr_info("relay multicast no skb available\n");
1259                         } else {
1260                                 skbcpy->dev = pDevice->dev;
1261                                 skbcpy->len = FrameSize;
1262                                 memcpy(skbcpy->data, skb->data+cbHeaderOffset, FrameSize);
1263                                 skb_queue_tail(&(pMgmt->sNodeDBTable[0].sTxPSQueue), skbcpy);
1264
1265                                 pMgmt->sNodeDBTable[0].wEnQueueCnt++;
1266                                 // set tx map
1267                                 pMgmt->abyPSTxMap[0] |= byMask[0];
1268                         }
1269                 } else {
1270                         bRelayAndForward = true;
1271                 }
1272         } else {
1273                 // check if relay
1274                 if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(skb->data+cbHeaderOffset), &iDANodeIndex)) {
1275                         if (pMgmt->sNodeDBTable[iDANodeIndex].eNodeState >= NODE_ASSOC) {
1276                                 if (pMgmt->sNodeDBTable[iDANodeIndex].bPSEnable) {
1277                                         // queue this skb until next PS tx, and then release.
1278
1279                                         skb->data += cbHeaderOffset;
1280                                         skb->tail += cbHeaderOffset;
1281                                         skb_put(skb, FrameSize);
1282                                         skb_queue_tail(&pMgmt->sNodeDBTable[iDANodeIndex].sTxPSQueue, skb);
1283                                         pMgmt->sNodeDBTable[iDANodeIndex].wEnQueueCnt++;
1284                                         wAID = pMgmt->sNodeDBTable[iDANodeIndex].wAID;
1285                                         pMgmt->abyPSTxMap[wAID >> 3] |=  byMask[wAID & 7];
1286                                         pr_debug("relay: index= %d, pMgmt->abyPSTxMap[%d]= %d\n",
1287                                                  iDANodeIndex, (wAID >> 3),
1288                                                  pMgmt->abyPSTxMap[wAID >> 3]);
1289                                         return true;
1290                                 } else {
1291                                         bRelayOnly = true;
1292                                 }
1293                         }
1294                 }
1295         }
1296
1297         if (bRelayOnly || bRelayAndForward) {
1298                 // relay this packet right now
1299                 if (bRelayAndForward)
1300                         iDANodeIndex = 0;
1301
1302                 if ((pDevice->uAssocCount > 1) && (iDANodeIndex >= 0))
1303                         ROUTEbRelay(pDevice, (unsigned char *)(skb->data + cbHeaderOffset), FrameSize, (unsigned int)iDANodeIndex);
1304
1305                 if (bRelayOnly)
1306                         return false;
1307         }
1308         // none associate, don't forward
1309         if (pDevice->uAssocCount == 0)
1310                 return false;
1311
1312         return true;
1313 }