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->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 //PLICE_DEBUG->
 316         pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
 317                          pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 318 //PLICE_DEBUG<-
 319         pwFrameSize = (unsigned short *)(skb->data + 2);
 320         FrameSize = cpu_to_le16(pCurrRD->m_rd1RD1.wReqCount) - cpu_to_le16(pCurrRD->m_rd0RD0.wResCount);
 321
 322         // Max: 2312Payload + 30HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
 323         // Min (ACK): 10HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
 324         if ((FrameSize > 2364) || (FrameSize <= 32)) {
 325                 // Frame Size error drop this packet.
 326                 pr_debug("---------- WRONG Length 1\n");
 327                 return false;
 328         }
 329
 330         pbyRxSts = (unsigned char *)(skb->data);
 331         pbyRxRate = (unsigned char *)(skb->data + 1);
 332         pbyRsr = (unsigned char *)(skb->data + FrameSize - 1);
 333         pbyRSSI = (unsigned char *)(skb->data + FrameSize - 2);
 334         pbyNewRsr = (unsigned char *)(skb->data + FrameSize - 3);
 335         pbySQ = (unsigned char *)(skb->data + FrameSize - 4);
 336         pqwTSFTime = (__le64 *)(skb->data + FrameSize - 12);
 337         pbyFrame = (unsigned char *)(skb->data + 4);
 338
 339         // get packet size
 340         FrameSize = cpu_to_le16(*pwFrameSize);
 341
 342         if ((FrameSize > 2346)|(FrameSize < 14)) { // Max: 2312Payload + 30HD +4CRC
 343                 // Min: 14 bytes ACK
 344                 pr_debug("---------- WRONG Length 2\n");
 345                 return false;
 346         }
 347 //PLICE_DEBUG->
 348         // update receive statistic counter
 349         STAvUpdateRDStatCounter(&pDevice->scStatistic,
 350                                 *pbyRsr,
 351                                 *pbyNewRsr,
 352                                 *pbyRxRate,
 353                                 pbyFrame,
 354                                 FrameSize);
 355
 356         pMACHeader = (PS802_11Header)((unsigned char *)(skb->data) + 8);
 357 //PLICE_DEBUG<-
 358         if (pDevice->bMeasureInProgress) {
 359                 if ((*pbyRsr & RSR_CRCOK) != 0)
 360                         pDevice->byBasicMap |= 0x01;
 361
 362                 dwDuration = (FrameSize << 4);
 363                 dwDuration /= acbyRxRate[*pbyRxRate%MAX_RATE];
 364                 if (*pbyRxRate <= RATE_11M) {
 365                         if (*pbyRxSts & 0x01) {
 366                                 // long preamble
 367                                 dwDuration += 192;
 368                         } else {
 369                                 // short preamble
 370                                 dwDuration += 96;
 371                         }
 372                 } else {
 373                         dwDuration += 16;
 374                 }
 375                 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
 376                 ldBmThreshold = -57;
 377                 for (ii = 7; ii > 0;) {
 378                         if (ldBm > ldBmThreshold)
 379                                 break;
 380
 381                         ldBmThreshold -= 5;
 382                         ii--;
 383                 }
 384                 pDevice->dwRPIs[ii] += dwDuration;
 385                 return false;
 386         }
 387
 388         if (!is_multicast_ether_addr(pbyFrame)) {
 389                 if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (PS802_11Header)(skb->data + 4))) {
 390                         pDevice->s802_11Counter.FrameDuplicateCount++;
 391                         return false;
 392                 }
 393         }
 394
 395         // Use for TKIP MIC
 396         s_vGetDASA(skb->data+4, &cbHeaderSize, &pDevice->sRxEthHeader);
 397
 398         // filter packet send from myself
 399         if (ether_addr_equal(pDevice->sRxEthHeader.abySrcAddr,
 400                              pDevice->abyCurrentNetAddr))
 401                 return false;
 402
 403         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) {
 404                 if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
 405                         p802_11Header = (PS802_11Header)(pbyFrame);
 406                         // get SA NodeIndex
 407                         if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(p802_11Header->abyAddr2), &iSANodeIndex)) {
 408                                 pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies;
 409                                 pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0;
 410                         }
 411                 }
 412         }
 413
 414         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 415                 if (s_bAPModeRxCtl(pDevice, pbyFrame, iSANodeIndex))
 416                         return false;
 417         }
 418
 419         if (IS_FC_WEP(pbyFrame)) {
 420                 bool bRxDecryOK = false;
 421
 422                 pr_debug("rx WEP pkt\n");
 423                 bIsWEP = true;
 424                 if ((pDevice->bEnableHostWEP) && (iSANodeIndex >= 0)) {
 425                         pKey = &STempKey;
 426                         pKey->byCipherSuite = pMgmt->sNodeDBTable[iSANodeIndex].byCipherSuite;
 427                         pKey->dwKeyIndex = pMgmt->sNodeDBTable[iSANodeIndex].dwKeyIndex;
 428                         pKey->uKeyLength = pMgmt->sNodeDBTable[iSANodeIndex].uWepKeyLength;
 429                         pKey->dwTSC47_16 = pMgmt->sNodeDBTable[iSANodeIndex].dwTSC47_16;
 430                         pKey->wTSC15_0 = pMgmt->sNodeDBTable[iSANodeIndex].wTSC15_0;
 431                         memcpy(pKey->abyKey,
 432                                &pMgmt->sNodeDBTable[iSANodeIndex].abyWepKey[0],
 433                                pKey->uKeyLength
 434 );
 435
 436                         bRxDecryOK = s_bHostWepRxEncryption(pDevice,
 437                                                             pbyFrame,
 438                                                             FrameSize,
 439                                                             pbyRsr,
 440                                                             pMgmt->sNodeDBTable[iSANodeIndex].bOnFly,
 441                                                             pKey,
 442                                                             pbyNewRsr,
 443                                                             &bExtIV,
 444                                                             &wRxTSC15_0,
 445                                                             &dwRxTSC47_16);
 446                 } else {
 447                         bRxDecryOK = s_bHandleRxEncryption(pDevice,
 448                                                            pbyFrame,
 449                                                            FrameSize,
 450                                                            pbyRsr,
 451                                                            pbyNewRsr,
 452                                                            &pKey,
 453                                                            &bExtIV,
 454                                                            &wRxTSC15_0,
 455                                                            &dwRxTSC47_16);
 456                 }
 457
 458                 if (bRxDecryOK) {
 459                         if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) {
 460                                 pr_debug("ICV Fail\n");
 461                                 if ((pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
 462                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
 463                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
 464                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
 465                                     (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
 466                                         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP))
 467                                                 pDevice->s802_11Counter.TKIPICVErrors++;
 468                                         else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
 469                                                 pDevice->s802_11Counter.CCMPDecryptErrors++;
 470                                 }
 471                                 return false;
 472                         }
 473                 } else {
 474                         pr_debug("WEP Func Fail\n");
 475                         return false;
 476                 }
 477                 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
 478                         FrameSize -= 8;         // Message Integrity Code
 479                 else
 480                         FrameSize -= 4;         // 4 is ICV
 481         }
 482
 483         //
 484         // RX OK
 485         //
 486         //remove the CRC length
 487         FrameSize -= ETH_FCS_LEN;
 488
 489         if ((!(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI))) && // unicast address
 490             (IS_FRAGMENT_PKT((skb->data+4)))
 491 ) {
 492                 // defragment
 493                 bDeFragRx = WCTLbHandleFragment(pDevice, (PS802_11Header)(skb->data+4), FrameSize, bIsWEP, bExtIV);
 494                 pDevice->s802_11Counter.ReceivedFragmentCount++;
 495                 if (bDeFragRx) {
 496                         // defrag complete
 497                         skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb;
 498                         FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength;
 499
 500                 } else {
 501                         return false;
 502                 }
 503         }
 504
 505 // Management & Control frame Handle
 506         if ((IS_TYPE_DATA((skb->data+4))) == false) {
 507                 // Handle Control & Manage Frame
 508
 509                 if (IS_TYPE_MGMT((skb->data+4))) {
 510                         unsigned char *pbyData1;
 511                         unsigned char *pbyData2;
 512
 513                         pRxPacket->p80211Header = (PUWLAN_80211HDR)(skb->data+4);
 514                         pRxPacket->cbMPDULen = FrameSize;
 515                         pRxPacket->uRSSI = *pbyRSSI;
 516                         pRxPacket->bySQ = *pbySQ;
 517                         pRxPacket->qwLocalTSF = le64_to_cpu(*pqwTSFTime);
 518                         if (bIsWEP) {
 519                                 // strip IV
 520                                 pbyData1 = WLAN_HDR_A3_DATA_PTR(skb->data+4);
 521                                 pbyData2 = WLAN_HDR_A3_DATA_PTR(skb->data+4) + 4;
 522                                 for (ii = 0; ii < (FrameSize - 4); ii++) {
 523                                         *pbyData1 = *pbyData2;
 524                                         pbyData1++;
 525                                         pbyData2++;
 526                                 }
 527                         }
 528                         pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate);
 529                         pRxPacket->byRxChannel = (*pbyRxSts) >> 2;
 530
 531                         vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
 532
 533                         // hostap Deamon handle 802.11 management
 534                         if (pDevice->bEnableHostapd) {
 535                                 skb->dev = pDevice->apdev;
 536                                 skb->data += 4;
 537                                 skb->tail += 4;
 538                                 skb_put(skb, FrameSize);
 539                                 skb_reset_mac_header(skb);
 540                                 skb->pkt_type = PACKET_OTHERHOST;
 541                                 skb->protocol = htons(ETH_P_802_2);
 542                                 memset(skb->cb, 0, sizeof(skb->cb));
 543                                 netif_rx(skb);
 544                                 return true;
 545                         }
 546                 }
 547
 548                 return false;
 549         } else {
 550                 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 551                         //In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC.
 552                         if (!(*pbyRsr & RSR_BSSIDOK)) {
 553                                 if (bDeFragRx) {
 554                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 555                                                 pr_err("%s: can not alloc more frag bufs\n",
 556                                                        pDevice->dev->name);
 557                                         }
 558                                 }
 559                                 return false;
 560                         }
 561                 } else {
 562                         // discard DATA packet while not associate || BSSID error
 563                         if (!pDevice->bLinkPass || !(*pbyRsr & RSR_BSSIDOK)) {
 564                                 if (bDeFragRx) {
 565                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 566                                                 pr_err("%s: can not alloc more frag bufs\n",
 567                                                        pDevice->dev->name);
 568                                         }
 569                                 }
 570                                 return false;
 571                         }
 572                         //mike add:station mode check eapol-key challenge--->
 573                         {
 574                                 unsigned char Protocol_Version;    //802.1x Authentication
 575                                 unsigned char Packet_Type;           //802.1x Authentication
 576
 577                                 if (bIsWEP)
 578                                         cbIVOffset = 8;
 579                                 else
 580                                         cbIVOffset = 0;
 581                                 wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
 582                                         skb->data[cbIVOffset + 8 + 24 + 6 + 1];
 583                                 Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1];
 584                                 Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1 + 1];
 585                                 if (wEtherType == ETH_P_PAE) {         //Protocol Type in LLC-Header
 586                                         if (((Protocol_Version == 1) || (Protocol_Version == 2)) &&
 587                                             (Packet_Type == 3)) {  //802.1x OR eapol-key challenge frame receive
 588                                                 bRxeapol_key = true;
 589                                         }
 590                                 }
 591                         }
 592                         //mike add:station mode check eapol-key challenge<---
 593                 }
 594         }
 595
 596 // Data frame Handle
 597
 598         if (pDevice->bEnablePSMode) {
 599                 if (!IS_FC_MOREDATA((skb->data+4))) {
 600                         if (pDevice->pMgmt->bInTIMWake == true)
 601                                 pDevice->pMgmt->bInTIMWake = false;
 602                 }
 603         }
 604
 605         // Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps
 606         if (pDevice->bDiversityEnable && (FrameSize > 50) &&
 607             (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) &&
 608             pDevice->bLinkPass) {
 609                 BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0);
 610         }
 611
 612         if (pDevice->byLocalID != REV_ID_VT3253_B1)
 613                 pDevice->uCurrRSSI = *pbyRSSI;
 614
 615         pDevice->byCurrSQ = *pbySQ;
 616
 617         if ((*pbyRSSI != 0) &&
 618             (pMgmt->pCurrBSS != NULL)) {
 619                 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
 620                 // Monitor if RSSI is too strong.
 621                 pMgmt->pCurrBSS->byRSSIStatCnt++;
 622                 pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT;
 623                 pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm;
 624                 for (ii = 0; ii < RSSI_STAT_COUNT; ii++)
 625                         if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0)
 626                                 pMgmt->pCurrBSS->ldBmMAX = max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm);
 627
 628         }
 629
 630         // -----------------------------------------------
 631
 632         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && pDevice->bEnable8021x) {
 633                 unsigned char abyMacHdr[24];
 634
 635                 // Only 802.1x packet incoming allowed
 636                 if (bIsWEP)
 637                         cbIVOffset = 8;
 638                 else
 639                         cbIVOffset = 0;
 640                 wEtherType = (skb->data[cbIVOffset + 4 + 24 + 6] << 8) |
 641                         skb->data[cbIVOffset + 4 + 24 + 6 + 1];
 642
 643                 pr_debug("wEtherType = %04x\n", wEtherType);
 644                 if (wEtherType == ETH_P_PAE) {
 645                         skb->dev = pDevice->apdev;
 646
 647                         if (bIsWEP) {
 648                                 // strip IV header(8)
 649                                 memcpy(&abyMacHdr[0], (skb->data + 4), 24);
 650                                 memcpy((skb->data + 4 + cbIVOffset), &abyMacHdr[0], 24);
 651                         }
 652                         skb->data +=  (cbIVOffset + 4);
 653                         skb->tail +=  (cbIVOffset + 4);
 654                         skb_put(skb, FrameSize);
 655                         skb_reset_mac_header(skb);
 656
 657                         skb->pkt_type = PACKET_OTHERHOST;
 658                         skb->protocol = htons(ETH_P_802_2);
 659                         memset(skb->cb, 0, sizeof(skb->cb));
 660                         netif_rx(skb);
 661                         return true;
 662
 663                 }
 664                 // check if 802.1x authorized
 665                 if (!(pMgmt->sNodeDBTable[iSANodeIndex].dwFlags & WLAN_STA_AUTHORIZED))
 666                         return false;
 667         }
 668
 669         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 670                 if (bIsWEP)
 671                         FrameSize -= 8;  //MIC
 672         }
 673
 674         //--------------------------------------------------------------------------------
 675         // Soft MIC
 676         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 677                 if (bIsWEP) {
 678                         __le32 *pdwMIC_L;
 679                         __le32 *pdwMIC_R;
 680                         __le32 dwMIC_Priority;
 681                         __le32 dwMICKey0 = 0, dwMICKey1 = 0;
 682                         u32 dwLocalMIC_L = 0;
 683                         u32 dwLocalMIC_R = 0;
 684                         viawget_wpa_header *wpahdr;
 685
 686                         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 687                                 dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 688                                 dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 689                         } else {
 690                                 if (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) {
 691                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 692                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 693                                 } else if ((pKey->dwKeyIndex & BIT28) == 0) {
 694                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 695                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 696                                 } else {
 697                                         dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 698                                         dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 699                                 }
 700                         }
 701
 702                         MIC_vInit(dwMICKey0, dwMICKey1);
 703                         MIC_vAppend((unsigned char *)&(pDevice->sRxEthHeader.abyDstAddr[0]), 12);
 704                         dwMIC_Priority = 0;
 705                         MIC_vAppend((unsigned char *)&dwMIC_Priority, 4);
 706                         // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV.
 707                         MIC_vAppend((unsigned char *)(skb->data + 4 + WLAN_HDR_ADDR3_LEN + 8),
 708                                     FrameSize - WLAN_HDR_ADDR3_LEN - 8);
 709                         MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R);
 710                         MIC_vUnInit();
 711
 712                         pdwMIC_L = (__le32 *)(skb->data + 4 + FrameSize);
 713                         pdwMIC_R = (__le32 *)(skb->data + 4 + FrameSize + 4);
 714
 715                         if ((le32_to_cpu(*pdwMIC_L) != dwLocalMIC_L) ||
 716                             (le32_to_cpu(*pdwMIC_R) != dwLocalMIC_R) ||
 717                             pDevice->bRxMICFail) {
 718                                 pr_debug("MIC comparison is fail!\n");
 719                                 pDevice->bRxMICFail = false;
 720                                 pDevice->s802_11Counter.TKIPLocalMICFailures++;
 721                                 if (bDeFragRx) {
 722                                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 723                                                 pr_err("%s: can not alloc more frag bufs\n",
 724                                                        pDevice->dev->name);
 725                                         }
 726                                 }
 727                                 //2008-0409-07, <Add> by Einsn Liu
 728 #ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
 729                                 //send event to wpa_supplicant
 730                                 {
 731                                         union iwreq_data wrqu;
 732                                         struct iw_michaelmicfailure ev;
 733                                         int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits
 734
 735                                         memset(&ev, 0, sizeof(ev));
 736                                         ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
 737                                         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 738                                             (pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
 739                                             (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
 740                                                 ev.flags |= IW_MICFAILURE_PAIRWISE;
 741                                         } else {
 742                                                 ev.flags |= IW_MICFAILURE_GROUP;
 743                                         }
 744
 745                                         ev.src_addr.sa_family = ARPHRD_ETHER;
 746                                         memcpy(ev.src_addr.sa_data, pMACHeader->abyAddr2, ETH_ALEN);
 747                                         memset(&wrqu, 0, sizeof(wrqu));
 748                                         wrqu.data.length = sizeof(ev);
 749                                         wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
 750
 751                                 }
 752 #endif
 753
 754                                 if ((pDevice->bWPADEVUp) && (pDevice->skb != NULL)) {
 755                                         wpahdr = (viawget_wpa_header *)pDevice->skb->data;
 756                                         if ((pDevice->pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 757                                             (pDevice->pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
 758                                             (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
 759                                                 wpahdr->type = VIAWGET_PTK_MIC_MSG;
 760                                         } else {
 761                                                 wpahdr->type = VIAWGET_GTK_MIC_MSG;
 762                                         }
 763                                         wpahdr->resp_ie_len = 0;
 764                                         wpahdr->req_ie_len = 0;
 765                                         skb_put(pDevice->skb, sizeof(viawget_wpa_header));
 766                                         pDevice->skb->dev = pDevice->wpadev;
 767                                         skb_reset_mac_header(pDevice->skb);
 768                                         pDevice->skb->pkt_type = PACKET_HOST;
 769                                         pDevice->skb->protocol = htons(ETH_P_802_2);
 770                                         memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb));
 771                                         netif_rx(pDevice->skb);
 772                                         pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
 773                                 }
 774
 775                                 return false;
 776
 777                         }
 778                 }
 779         } //---end of SOFT MIC-----------------------------------------------------------------------
 780
 781         // ++++++++++ Reply Counter Check +++++++++++++
 782
 783         if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) ||
 784                                (pKey->byCipherSuite == KEY_CTL_CCMP))) {
 785                 if (bIsWEP) {
 786                         unsigned short wLocalTSC15_0 = 0;
 787                         unsigned long dwLocalTSC47_16 = 0;
 788                         unsigned long long       RSC = 0;
 789                         // endian issues
 790                         RSC = *((unsigned long long *)&(pKey->KeyRSC));
 791                         wLocalTSC15_0 = (unsigned short)RSC;
 792                         dwLocalTSC47_16 = (unsigned long)(RSC>>16);
 793
 794                         RSC = dwRxTSC47_16;
 795                         RSC <<= 16;
 796                         RSC += wRxTSC15_0;
 797                         pKey->KeyRSC = RSC;
 798
 799                         if ((pDevice->sMgmtObj.eCurrMode == WMAC_MODE_ESS_STA) &&
 800                             (pDevice->sMgmtObj.eCurrState == WMAC_STATE_ASSOC)) {
 801                                 // check RSC
 802                                 if ((wRxTSC15_0 < wLocalTSC15_0) &&
 803                                     (dwRxTSC47_16 <= dwLocalTSC47_16) &&
 804                                     !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) {
 805                                         pr_debug("TSC is illegal~~!\n ");
 806                                         if (pKey->byCipherSuite == KEY_CTL_TKIP)
 807                                                 pDevice->s802_11Counter.TKIPReplays++;
 808                                         else
 809                                                 pDevice->s802_11Counter.CCMPReplays++;
 810
 811                                         if (bDeFragRx) {
 812                                                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 813                                                         pr_err("%s: can not alloc more frag bufs\n",
 814                                                                pDevice->dev->name);
 815                                                 }
 816                                         }
 817                                         return false;
 818                                 }
 819                         }
 820                 }
 821         } // ----- End of Reply Counter Check --------------------------
 822
 823         s_vProcessRxMACHeader(pDevice, (unsigned char *)(skb->data+4), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset);
 824         FrameSize -= cbHeaderOffset;
 825         cbHeaderOffset += 4;        // 4 is Rcv buffer header
 826
 827         // Null data, framesize = 14
 828         if (FrameSize < 15)
 829                 return false;
 830
 831         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 832                 if (!s_bAPModeRxData(pDevice,
 833                                     skb,
 834                                     FrameSize,
 835                                     cbHeaderOffset,
 836                                     iSANodeIndex,
 837                                     iDANodeIndex
 838 )) {
 839                         if (bDeFragRx) {
 840                                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 841                                         pr_err("%s: can not alloc more frag bufs\n",
 842                                                pDevice->dev->name);
 843                                 }
 844                         }
 845                         return false;
 846                 }
 847         }
 848
 849         skb->data += cbHeaderOffset;
 850         skb->tail += cbHeaderOffset;
 851         skb_put(skb, FrameSize);
 852         skb->protocol = eth_type_trans(skb, skb->dev);
 853
 854         //drop frame not met IEEE 802.3
 855
 856         skb->ip_summed = CHECKSUM_NONE;
 857         pStats->rx_bytes += skb->len;
 858         pStats->rx_packets++;
 859         netif_rx(skb);
 860
 861         if (bDeFragRx) {
 862                 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 863                         pr_err("%s: can not alloc more frag bufs\n",
 864                                pDevice->dev->name);
 865                 }
 866                 return false;
 867         }
 868
 869         return true;
 870 }
 871
 872 static bool s_bAPModeRxCtl(
 873         struct vnt_private *pDevice,
 874         unsigned char *pbyFrame,
 875         int      iSANodeIndex
 876 )
 877 {
 878         PS802_11Header      p802_11Header;
 879         CMD_STATUS          Status;
 880         PSMgmtObject        pMgmt = pDevice->pMgmt;
 881
 882         if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
 883                 p802_11Header = (PS802_11Header)(pbyFrame);
 884                 if (!IS_TYPE_MGMT(pbyFrame)) {
 885                         // Data & PS-Poll packet
 886                         // check frame class
 887                         if (iSANodeIndex > 0) {
 888                                 // frame class 3 fliter & checking
 889                                 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_AUTH) {
 890                                         // send deauth notification
 891                                         // reason = (6) class 2 received from nonauth sta
 892                                         vMgrDeAuthenBeginSta(pDevice,
 893                                                              pMgmt,
 894                                                              (unsigned char *)(p802_11Header->abyAddr2),
 895                                                              (WLAN_MGMT_REASON_CLASS2_NONAUTH),
 896                                                              &Status
 897 );
 898                                         pr_debug("dpc: send vMgrDeAuthenBeginSta 1\n");
 899                                         return true;
 900                                 }
 901                                 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_ASSOC) {
 902                                         // send deassoc notification
 903                                         // reason = (7) class 3 received from nonassoc sta
 904                                         vMgrDisassocBeginSta(pDevice,
 905                                                              pMgmt,
 906                                                              (unsigned char *)(p802_11Header->abyAddr2),
 907                                                              (WLAN_MGMT_REASON_CLASS3_NONASSOC),
 908                                                              &Status
 909 );
 910                                         pr_debug("dpc: send vMgrDisassocBeginSta 2\n");
 911                                         return true;
 912                                 }
 913
 914                                 if (pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable) {
 915                                         // delcare received ps-poll event
 916                                         if (IS_CTL_PSPOLL(pbyFrame)) {
 917                                                 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 918                                                 bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
 919                                                 pr_debug("dpc: WLAN_CMD_RX_PSPOLL 1\n");
 920                                         } else {
 921                                                 // check Data PS state
 922                                                 // if PW bit off, send out all PS bufferring packets.
 923                                                 if (!IS_FC_POWERMGT(pbyFrame)) {
 924                                                         pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
 925                                                         pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 926                                                         bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
 927                                                         pr_debug("dpc: WLAN_CMD_RX_PSPOLL 2\n");
 928                                                 }
 929                                         }
 930                                 } else {
 931                                         if (IS_FC_POWERMGT(pbyFrame)) {
 932                                                 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = true;
 933                                                 // Once if STA in PS state, enable multicast bufferring
 934                                                 pMgmt->sNodeDBTable[0].bPSEnable = true;
 935                                         } else {
 936                                                 // clear all pending PS frame.
 937                                                 if (pMgmt->sNodeDBTable[iSANodeIndex].wEnQueueCnt > 0) {
 938                                                         pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
 939                                                         pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
 940                                                         bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
 941                                                         pr_debug("dpc: WLAN_CMD_RX_PSPOLL 3\n");
 942
 943                                                 }
 944                                         }
 945                                 }
 946                         } else {
 947                                 vMgrDeAuthenBeginSta(pDevice,
 948                                                      pMgmt,
 949                                                      (unsigned char *)(p802_11Header->abyAddr2),
 950                                                      (WLAN_MGMT_REASON_CLASS2_NONAUTH),
 951                                                      &Status
 952 );
 953                                 pr_debug("dpc: send vMgrDeAuthenBeginSta 3\n");
 954                                 pr_debug("BSSID:%pM\n",
 955                                          p802_11Header->abyAddr3);
 956                                 pr_debug("ADDR2:%pM\n",
 957                                          p802_11Header->abyAddr2);
 958                                 pr_debug("ADDR1:%pM\n",
 959                                          p802_11Header->abyAddr1);
 960                                 pr_debug("dpc: wFrameCtl= %x\n",
 961                                          p802_11Header->wFrameCtl);
 962                                 VNSvInPortB(pDevice->PortOffset + MAC_REG_RCR, &(pDevice->byRxMode));
 963                                 pr_debug("dpc:pDevice->byRxMode = %x\n",
 964                                          pDevice->byRxMode);
 965                                 return true;
 966                         }
 967                 }
 968         }
 969         return false;
 970 }
 971
 972 static bool s_bHandleRxEncryption(
 973         struct vnt_private *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         pr_debug("\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                         pr_debug("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                         pr_debug("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                         pr_debug("group pkt: %d, %d, %p\n",
1028                                  byKeyIdx, byDecMode, pKey);
1029                 }
1030         }
1031         // our WEP only support Default Key
1032         if (pKey == NULL) {
1033                 // use default group key
1034                 KeybGetKey(&(pDevice->sKey), pDevice->abyBroadcastAddr, byKeyIdx, &pKey);
1035                 if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1036                         byDecMode = KEY_CTL_TKIP;
1037                 else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1038                         byDecMode = KEY_CTL_CCMP;
1039         }
1040         *pKeyOut = pKey;
1041
1042         pr_debug("AES:%d %d %d\n",
1043                  pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1044
1045         if (pKey == NULL) {
1046                 pr_debug("pKey == NULL\n");
1047
1048                 return false;
1049         }
1050         if (byDecMode != pKey->byCipherSuite) {
1051
1052                 *pKeyOut = NULL;
1053                 return false;
1054         }
1055         if (byDecMode == KEY_CTL_WEP) {
1056                 // handle WEP
1057                 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1058                     (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) {
1059                         // Software WEP
1060                         // 1. 3253A
1061                         // 2. WEP 256
1062
1063                         PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1064                         memcpy(pDevice->abyPRNG, pbyIV, 3);
1065                         memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1066                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1067                         rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1068
1069                         if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen))
1070                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1071
1072                 }
1073         } else if ((byDecMode == KEY_CTL_TKIP) ||
1074                    (byDecMode == KEY_CTL_CCMP)) {
1075                 // TKIP/AES
1076
1077                 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1078                 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1079                 pr_debug("ExtIV: %lx\n", *pdwRxTSC47_16);
1080                 if (byDecMode == KEY_CTL_TKIP)
1081                         *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV + 2), *pbyIV));
1082                 else
1083                         *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1084
1085                 pr_debug("TSC0_15: %x\n", *pwRxTSC15_0);
1086
1087                 if ((byDecMode == KEY_CTL_TKIP) &&
1088                     (pDevice->byLocalID <= REV_ID_VT3253_A1)) {
1089                         // Software TKIP
1090                         // 1. 3253 A
1091                         PS802_11Header  pMACHeader = (PS802_11Header)(pbyFrame);
1092
1093                         TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1094                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1095                         rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1096                         if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1097                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1098                                 pr_debug("ICV OK!\n");
1099                         } else {
1100                                 pr_debug("ICV FAIL!!!\n");
1101                                 pr_debug("PayloadLen = %d\n", PayloadLen);
1102                         }
1103                 }
1104         }// end of TKIP/AES
1105
1106         if ((*(pbyIV+3) & 0x20) != 0)
1107                 *pbExtIV = true;
1108         return true;
1109 }
1110
1111 static bool s_bHostWepRxEncryption(
1112         struct vnt_private *pDevice,
1113         unsigned char *pbyFrame,
1114         unsigned int FrameSize,
1115         unsigned char *pbyRsr,
1116         bool bOnFly,
1117         PSKeyItem    pKey,
1118         unsigned char *pbyNewRsr,
1119         bool *pbExtIV,
1120         unsigned short *pwRxTSC15_0,
1121         unsigned long *pdwRxTSC47_16
1122 )
1123 {
1124         unsigned int PayloadLen = FrameSize;
1125         unsigned char *pbyIV;
1126         unsigned char byKeyIdx;
1127         unsigned char byDecMode = KEY_CTL_WEP;
1128         PS802_11Header  pMACHeader;
1129
1130         *pwRxTSC15_0 = 0;
1131         *pdwRxTSC47_16 = 0;
1132
1133         pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1134         if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1135             WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
1136                 pbyIV += 6;             // 6 is 802.11 address4
1137                 PayloadLen -= 6;
1138         }
1139         byKeyIdx = (*(pbyIV+3) & 0xc0);
1140         byKeyIdx >>= 6;
1141         pr_debug("\nKeyIdx: %d\n", byKeyIdx);
1142
1143         if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1144                 byDecMode = KEY_CTL_TKIP;
1145         else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1146                 byDecMode = KEY_CTL_CCMP;
1147
1148         pr_debug("AES:%d %d %d\n",
1149                  pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1150
1151         if (byDecMode != pKey->byCipherSuite)
1152                 return false;
1153
1154         if (byDecMode == KEY_CTL_WEP) {
1155                 // handle WEP
1156                 pr_debug("byDecMode == KEY_CTL_WEP\n");
1157
1158                 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1159                     (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true) ||
1160                     !bOnFly) {
1161                         // Software WEP
1162                         // 1. 3253A
1163                         // 2. WEP 256
1164                         // 3. NotOnFly
1165
1166                         PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1167                         memcpy(pDevice->abyPRNG, pbyIV, 3);
1168                         memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1169                         rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1170                         rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1171
1172                         if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen))
1173                                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1174
1175                 }
1176         } else if ((byDecMode == KEY_CTL_TKIP) ||
1177                    (byDecMode == KEY_CTL_CCMP)) {
1178                 // TKIP/AES
1179
1180                 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1181                 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1182                 pr_debug("ExtIV: %lx\n", *pdwRxTSC47_16);
1183
1184                 if (byDecMode == KEY_CTL_TKIP)
1185                         *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1186                 else
1187                         *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1188
1189                 pr_debug("TSC0_15: %x\n", *pwRxTSC15_0);
1190
1191                 if (byDecMode == KEY_CTL_TKIP) {
1192                         if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || !bOnFly) {
1193                                 // Software TKIP
1194                                 // 1. 3253 A
1195                                 // 2. NotOnFly
1196                                 pr_debug("soft KEY_CTL_TKIP\n");
1197                                 pMACHeader = (PS802_11Header)(pbyFrame);
1198                                 TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1199                                 rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1200                                 rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1201                                 if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1202                                         *pbyNewRsr |= NEWRSR_DECRYPTOK;
1203                                         pr_debug("ICV OK!\n");
1204                                 } else {
1205                                         pr_debug("ICV FAIL!!!\n");
1206                                         pr_debug("PayloadLen = %d\n",
1207                                                  PayloadLen);
1208                                 }
1209                         }
1210                 }
1211
1212                 if (byDecMode == KEY_CTL_CCMP) {
1213                         if (!bOnFly) {
1214                                 // Software CCMP
1215                                 // NotOnFly
1216                                 pr_debug("soft KEY_CTL_CCMP\n");
1217                                 if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) {
1218                                         *pbyNewRsr |= NEWRSR_DECRYPTOK;
1219                                         pr_debug("CCMP MIC compare OK!\n");
1220                                 } else {
1221                                         pr_debug("CCMP MIC fail!\n");
1222                                 }
1223                         }
1224                 }
1225
1226         }// end of TKIP/AES
1227
1228         if ((*(pbyIV+3) & 0x20) != 0)
1229                 *pbExtIV = true;
1230         return true;
1231 }
1232
1233 static bool s_bAPModeRxData(
1234         struct vnt_private *pDevice,
1235         struct sk_buff *skb,
1236         unsigned int FrameSize,
1237         unsigned int cbHeaderOffset,
1238         int      iSANodeIndex,
1239         int      iDANodeIndex
1240 )
1241 {
1242         PSMgmtObject        pMgmt = pDevice->pMgmt;
1243         bool bRelayAndForward = false;
1244         bool bRelayOnly = false;
1245         unsigned char byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
1246         unsigned short wAID;
1247
1248         struct sk_buff *skbcpy = NULL;
1249
1250         if (FrameSize > CB_MAX_BUF_SIZE)
1251                 return false;
1252         // check DA
1253         if (is_multicast_ether_addr((unsigned char *)(skb->data+cbHeaderOffset))) {
1254                 if (pMgmt->sNodeDBTable[0].bPSEnable) {
1255                         skbcpy = dev_alloc_skb((int)pDevice->rx_buf_sz);
1256
1257                         // if any node in PS mode, buffer packet until DTIM.
1258                         if (skbcpy == NULL) {
1259                                 pr_info("relay multicast no skb available\n");
1260                         } else {
1261                                 skbcpy->dev = pDevice->dev;
1262                                 skbcpy->len = FrameSize;
1263                                 memcpy(skbcpy->data, skb->data+cbHeaderOffset, FrameSize);
1264                                 skb_queue_tail(&(pMgmt->sNodeDBTable[0].sTxPSQueue), skbcpy);
1265
1266                                 pMgmt->sNodeDBTable[0].wEnQueueCnt++;
1267                                 // set tx map
1268                                 pMgmt->abyPSTxMap[0] |= byMask[0];
1269                         }
1270                 } else {
1271                         bRelayAndForward = true;
1272                 }
1273         } else {
1274                 // check if relay
1275                 if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(skb->data+cbHeaderOffset), &iDANodeIndex)) {
1276                         if (pMgmt->sNodeDBTable[iDANodeIndex].eNodeState >= NODE_ASSOC) {
1277                                 if (pMgmt->sNodeDBTable[iDANodeIndex].bPSEnable) {
1278                                         // queue this skb until next PS tx, and then release.
1279
1280                                         skb->data += cbHeaderOffset;
1281                                         skb->tail += cbHeaderOffset;
1282                                         skb_put(skb, FrameSize);
1283                                         skb_queue_tail(&pMgmt->sNodeDBTable[iDANodeIndex].sTxPSQueue, skb);
1284                                         pMgmt->sNodeDBTable[iDANodeIndex].wEnQueueCnt++;
1285                                         wAID = pMgmt->sNodeDBTable[iDANodeIndex].wAID;
1286                                         pMgmt->abyPSTxMap[wAID >> 3] |=  byMask[wAID & 7];
1287                                         pr_debug("relay: index= %d, pMgmt->abyPSTxMap[%d]= %d\n",
1288                                                  iDANodeIndex, (wAID >> 3),
1289                                                  pMgmt->abyPSTxMap[wAID >> 3]);
1290                                         return true;
1291                                 } else {
1292                                         bRelayOnly = true;
1293                                 }
1294                         }
1295                 }
1296         }
1297
1298         if (bRelayOnly || bRelayAndForward) {
1299                 // relay this packet right now
1300                 if (bRelayAndForward)
1301                         iDANodeIndex = 0;
1302
1303                 if ((pDevice->uAssocCount > 1) && (iDANodeIndex >= 0))
1304                         ROUTEbRelay(pDevice, (unsigned char *)(skb->data + cbHeaderOffset), FrameSize, (unsigned int)iDANodeIndex);
1305
1306                 if (bRelayOnly)
1307                         return false;
1308         }
1309         // none associate, don't forward
1310         if (pDevice->uAssocCount == 0)
1311                 return false;
1312
1313         return true;
1314 }