drivers/staging/vt6656/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_bHandleRxEncryption- Rcv decrypted data via on-fly
  30  *      s_byGetRateIdx- get rate index
  31  *      s_vGetDASA- get data offset
  32  *      s_vProcessRxMACHeader- Rcv 802.11 and translate to 802.3
  33  *
  34  * Revision History:
  35  *
  36  */
  37
  38 #include "dpc.h"
  39 #include "device.h"
  40 #include "rxtx.h"
  41 #include "tether.h"
  42 #include "card.h"
  43 #include "bssdb.h"
  44 #include "mac.h"
  45 #include "baseband.h"
  46 #include "michael.h"
  47 #include "tkip.h"
  48 #include "tcrc.h"
  49 #include "wctl.h"
  50 #include "rf.h"
  51 #include "iowpa.h"
  52 #include "datarate.h"
  53 #include "usbpipe.h"
  54
  55 //static int          msglevel                =MSG_LEVEL_DEBUG;
  56 static int          msglevel                =MSG_LEVEL_INFO;
  57
  58 static const u8 acbyRxRate[MAX_RATE] =
  59 {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
  60
  61 static u8 s_byGetRateIdx(u8 byRate);
  62
  63 static
  64 void
  65 s_vGetDASA(
  66       u8 * pbyRxBufferAddr,
  67      unsigned int *pcbHeaderSize,
  68      struct ethhdr *psEthHeader
  69     );
  70
  71 static void s_vProcessRxMACHeader(struct vnt_private *pDevice,
  72         u8 *pbyRxBufferAddr, u32 cbPacketSize, int bIsWEP, int bExtIV,
  73         u32 *pcbHeadSize);
  74
  75 static int s_bHandleRxEncryption(struct vnt_private *pDevice, u8 *pbyFrame,
  76         u32 FrameSize, u8 *pbyRsr, u8 *pbyNewRsr, PSKeyItem *pKeyOut,
  77         s32 *pbExtIV, u16 *pwRxTSC15_0, u32 *pdwRxTSC47_16);
  78
  79 /*+
  80  *
  81  * Description:
  82  *    Translate Rcv 802.11 header to 802.3 header with Rx buffer
  83  *
  84  * Parameters:
  85  *  In:
  86  *      pDevice
  87  *      dwRxBufferAddr  - Address of Rcv Buffer
  88  *      cbPacketSize    - Rcv Packet size
  89  *      bIsWEP          - If Rcv with WEP
  90  *  Out:
  91  *      pcbHeaderSize   - 802.11 header size
  92  *
  93  * Return Value: None
  94  *
  95 -*/
  96
  97 static void s_vProcessRxMACHeader(struct vnt_private *pDevice,
  98         u8 *pbyRxBufferAddr, u32 cbPacketSize, int bIsWEP, int bExtIV,
  99         u32 *pcbHeadSize)
 100 {
 101         u8 *pbyRxBuffer;
 102         u32 cbHeaderSize = 0;
 103         u16 *pwType;
 104         struct ieee80211_hdr *pMACHeader;
 105         int ii;
 106
 107     pMACHeader = (struct ieee80211_hdr *) (pbyRxBufferAddr + cbHeaderSize);
 108
 109     s_vGetDASA((u8 *)pMACHeader, &cbHeaderSize, &pDevice->sRxEthHeader);
 110
 111     if (bIsWEP) {
 112         if (bExtIV) {
 113             // strip IV&ExtIV , add 8 byte
 114             cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 8);
 115         } else {
 116             // strip IV , add 4 byte
 117             cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 4);
 118         }
 119     }
 120     else {
 121         cbHeaderSize += WLAN_HDR_ADDR3_LEN;
 122     };
 123
 124     pbyRxBuffer = (u8 *) (pbyRxBufferAddr + cbHeaderSize);
 125     if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_Bridgetunnel)) {
 126         cbHeaderSize += 6;
 127     } else if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_RFC1042)) {
 128         cbHeaderSize += 6;
 129         pwType = (u16 *) (pbyRxBufferAddr + cbHeaderSize);
 130         if ((*pwType == cpu_to_be16(ETH_P_IPX)) ||
 131             (*pwType == cpu_to_le16(0xF380))) {
 132                 cbHeaderSize -= 8;
 133             pwType = (u16 *) (pbyRxBufferAddr + cbHeaderSize);
 134             if (bIsWEP) {
 135                 if (bExtIV) {
 136                     *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8);    // 8 is IV&ExtIV
 137                 } else {
 138                     *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4);    // 4 is IV
 139                 }
 140             }
 141             else {
 142                 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
 143             }
 144         }
 145     }
 146     else {
 147         cbHeaderSize -= 2;
 148         pwType = (u16 *) (pbyRxBufferAddr + cbHeaderSize);
 149         if (bIsWEP) {
 150             if (bExtIV) {
 151                 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8);    // 8 is IV&ExtIV
 152             } else {
 153                 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4);    // 4 is IV
 154             }
 155         }
 156         else {
 157             *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
 158         }
 159     }
 160
 161     cbHeaderSize -= (ETH_ALEN * 2);
 162     pbyRxBuffer = (u8 *) (pbyRxBufferAddr + cbHeaderSize);
 163     for (ii = 0; ii < ETH_ALEN; ii++)
 164         *pbyRxBuffer++ = pDevice->sRxEthHeader.h_dest[ii];
 165     for (ii = 0; ii < ETH_ALEN; ii++)
 166         *pbyRxBuffer++ = pDevice->sRxEthHeader.h_source[ii];
 167
 168     *pcbHeadSize = cbHeaderSize;
 169 }
 170
 171 static u8 s_byGetRateIdx(u8 byRate)
 172 {
 173     u8    byRateIdx;
 174
 175     for (byRateIdx = 0; byRateIdx <MAX_RATE ; byRateIdx++) {
 176         if (acbyRxRate[byRateIdx%MAX_RATE] == byRate)
 177             return byRateIdx;
 178     }
 179     return 0;
 180 }
 181
 182 static
 183 void
 184 s_vGetDASA (
 185       u8 * pbyRxBufferAddr,
 186      unsigned int *pcbHeaderSize,
 187      struct ethhdr *psEthHeader
 188     )
 189 {
 190         unsigned int            cbHeaderSize = 0;
 191         struct ieee80211_hdr *pMACHeader;
 192         int             ii;
 193
 194         pMACHeader = (struct ieee80211_hdr *) (pbyRxBufferAddr + cbHeaderSize);
 195
 196         if ((pMACHeader->frame_control & FC_TODS) == 0) {
 197                 if (pMACHeader->frame_control & FC_FROMDS) {
 198                         for (ii = 0; ii < ETH_ALEN; ii++) {
 199                                 psEthHeader->h_dest[ii] =
 200                                         pMACHeader->addr1[ii];
 201                                 psEthHeader->h_source[ii] =
 202                                         pMACHeader->addr3[ii];
 203                         }
 204                 } else {
 205                         /* IBSS mode */
 206                         for (ii = 0; ii < ETH_ALEN; ii++) {
 207                                 psEthHeader->h_dest[ii] =
 208                                         pMACHeader->addr1[ii];
 209                                 psEthHeader->h_source[ii] =
 210                                         pMACHeader->addr2[ii];
 211                         }
 212                 }
 213         } else {
 214                 /* Is AP mode.. */
 215                 if (pMACHeader->frame_control & FC_FROMDS) {
 216                         for (ii = 0; ii < ETH_ALEN; ii++) {
 217                                 psEthHeader->h_dest[ii] =
 218                                         pMACHeader->addr3[ii];
 219                                 psEthHeader->h_source[ii] =
 220                                         pMACHeader->addr4[ii];
 221                                 cbHeaderSize += 6;
 222                         }
 223                 } else {
 224                         for (ii = 0; ii < ETH_ALEN; ii++) {
 225                                 psEthHeader->h_dest[ii] =
 226                                         pMACHeader->addr3[ii];
 227                                 psEthHeader->h_source[ii] =
 228                                         pMACHeader->addr2[ii];
 229                         }
 230                 }
 231         };
 232     *pcbHeaderSize = cbHeaderSize;
 233 }
 234
 235 int RXbBulkInProcessData(struct vnt_private *pDevice, struct vnt_rcb *pRCB,
 236         unsigned long BytesToIndicate)
 237 {
 238         struct net_device_stats *pStats = &pDevice->stats;
 239         struct sk_buff *skb;
 240         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 241         struct vnt_rx_mgmt *pRxPacket = &pMgmt->sRxPacket;
 242         struct ieee80211_hdr *p802_11Header;
 243         u8 *pbyRsr, *pbyNewRsr, *pbyRSSI, *pbyFrame;
 244         u64 *pqwTSFTime;
 245         u32 bDeFragRx = false;
 246         u32 cbHeaderOffset, cbIVOffset;
 247         u32 FrameSize;
 248         u16 wEtherType = 0;
 249         s32 iSANodeIndex = -1;
 250         int ii;
 251         u8 *pbyRxSts, *pbyRxRate, *pbySQ, *pby3SQ;
 252         u32 cbHeaderSize;
 253         PSKeyItem pKey = NULL;
 254         u16 wRxTSC15_0 = 0;
 255         u32 dwRxTSC47_16 = 0;
 256         /* signed long ldBm = 0; */
 257         int bIsWEP = false; int bExtIV = false;
 258         u32 dwWbkStatus;
 259         struct vnt_rcb *pRCBIndicate = pRCB;
 260         u8 *pbyDAddress;
 261         u16 *pwPLCP_Length;
 262         u8 abyVaildRate[MAX_RATE]
 263                 = {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
 264         u16 wPLCPwithPadding;
 265         struct ieee80211_hdr *pMACHeader;
 266         int bRxeapol_key = false;
 267
 268     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---------- RXbBulkInProcessData---\n");
 269
 270     skb = pRCB->skb;
 271
 272         /* [31:16]RcvByteCount ( not include 4-byte Status ) */
 273         dwWbkStatus = *((u32 *)(skb->data));
 274         FrameSize = dwWbkStatus >> 16;
 275         FrameSize += 4;
 276
 277         if (BytesToIndicate != FrameSize) {
 278                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"------- WRONG Length 1\n");
 279                 pStats->rx_frame_errors++;
 280                 return false;
 281         }
 282
 283     if ((BytesToIndicate > 2372) || (BytesToIndicate <= 40)) {
 284         // Frame Size error drop this packet.
 285         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 2\n");
 286         pStats->rx_frame_errors++;
 287         return false;
 288     }
 289
 290     pbyDAddress = (u8 *)(skb->data);
 291     pbyRxSts = pbyDAddress+4;
 292     pbyRxRate = pbyDAddress+5;
 293
 294     //real Frame Size = USBFrameSize -4WbkStatus - 4RxStatus - 8TSF - 4RSR - 4SQ3 - ?Padding
 295     //if SQ3 the range is 24~27, if no SQ3 the range is 20~23
 296     //real Frame size in PLCPLength field.
 297     pwPLCP_Length = (u16 *) (pbyDAddress + 6);
 298     //Fix hardware bug => PLCP_Length error
 299     if ( ((BytesToIndicate - (*pwPLCP_Length)) > 27) ||
 300          ((BytesToIndicate - (*pwPLCP_Length)) < 24) ||
 301          (BytesToIndicate < (*pwPLCP_Length)) ) {
 302
 303         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Wrong PLCP Length %x\n", (int) *pwPLCP_Length);
 304         pStats->rx_frame_errors++;
 305         return false;
 306     }
 307     for ( ii=RATE_1M;ii<MAX_RATE;ii++) {
 308         if ( *pbyRxRate == abyVaildRate[ii] ) {
 309             break;
 310         }
 311     }
 312     if ( ii==MAX_RATE ) {
 313         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Wrong RxRate %x\n",(int) *pbyRxRate);
 314         return false;
 315     }
 316
 317     wPLCPwithPadding = ( (*pwPLCP_Length / 4) + ( (*pwPLCP_Length % 4) ? 1:0 ) ) *4;
 318
 319         pqwTSFTime = (u64 *)(pbyDAddress + 8 + wPLCPwithPadding);
 320   if(pDevice->byBBType == BB_TYPE_11G)  {
 321       pby3SQ = pbyDAddress + 8 + wPLCPwithPadding + 12;
 322       pbySQ = pby3SQ;
 323     }
 324   else {
 325    pbySQ = pbyDAddress + 8 + wPLCPwithPadding + 8;
 326    pby3SQ = pbySQ;
 327   }
 328     pbyNewRsr = pbyDAddress + 8 + wPLCPwithPadding + 9;
 329     pbyRSSI = pbyDAddress + 8 + wPLCPwithPadding + 10;
 330     pbyRsr = pbyDAddress + 8 + wPLCPwithPadding + 11;
 331
 332     FrameSize = *pwPLCP_Length;
 333
 334     pbyFrame = pbyDAddress + 8;
 335
 336     pMACHeader = (struct ieee80211_hdr *) pbyFrame;
 337
 338 //mike add: to judge if current AP is activated?
 339     if ((pMgmt->eCurrMode == WMAC_MODE_STANDBY) ||
 340         (pMgmt->eCurrMode == WMAC_MODE_ESS_STA)) {
 341        if (pMgmt->sNodeDBTable[0].bActive) {
 342          if (ether_addr_equal(pMgmt->abyCurrBSSID, pMACHeader->addr2)) {
 343             if (pMgmt->sNodeDBTable[0].uInActiveCount != 0)
 344                   pMgmt->sNodeDBTable[0].uInActiveCount = 0;
 345            }
 346        }
 347     }
 348
 349     if (!is_multicast_ether_addr(pMACHeader->addr1)) {
 350         if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (struct ieee80211_hdr *) pbyFrame)) {
 351             return false;
 352         }
 353
 354         if (!ether_addr_equal(pDevice->abyCurrentNetAddr, pMACHeader->addr1)) {
 355                 return false;
 356         }
 357     }
 358
 359     // Use for TKIP MIC
 360     s_vGetDASA(pbyFrame, &cbHeaderSize, &pDevice->sRxEthHeader);
 361
 362     if (ether_addr_equal((u8 *)pDevice->sRxEthHeader.h_source,
 363                          pDevice->abyCurrentNetAddr))
 364         return false;
 365
 366     if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) {
 367         if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
 368             p802_11Header = (struct ieee80211_hdr *) (pbyFrame);
 369             // get SA NodeIndex
 370             if (BSSbIsSTAInNodeDB(pDevice, (u8 *)(p802_11Header->addr2), &iSANodeIndex)) {
 371                 pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies;
 372                 pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0;
 373             }
 374         }
 375     }
 376
 377     if (IS_FC_WEP(pbyFrame)) {
 378         bool     bRxDecryOK = false;
 379
 380         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"rx WEP pkt\n");
 381         bIsWEP = true;
 382
 383         bRxDecryOK = s_bHandleRxEncryption(pDevice, pbyFrame, FrameSize,
 384                 pbyRsr, pbyNewRsr, &pKey, &bExtIV, &wRxTSC15_0, &dwRxTSC47_16);
 385
 386         if (bRxDecryOK) {
 387             if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) {
 388                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV Fail\n");
 389                 if ( (pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
 390                     (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
 391                     (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
 392                     (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
 393                     (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
 394                 }
 395                 return false;
 396             }
 397         } else {
 398             DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"WEP Func Fail\n");
 399             return false;
 400         }
 401         if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
 402             FrameSize -= 8;         // Message Integrity Code
 403         else
 404             FrameSize -= 4;         // 4 is ICV
 405     }
 406
 407     //
 408     // RX OK
 409     //
 410     /* remove the FCS/CRC length */
 411     FrameSize -= ETH_FCS_LEN;
 412
 413     if ( !(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) && // unicast address
 414         (IS_FRAGMENT_PKT((pbyFrame)))
 415         ) {
 416         // defragment
 417         bDeFragRx = WCTLbHandleFragment(pDevice, (struct ieee80211_hdr *) (pbyFrame), FrameSize, bIsWEP, bExtIV);
 418         if (bDeFragRx) {
 419             // defrag complete
 420             // TODO skb, pbyFrame
 421             skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb;
 422             FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength;
 423             pbyFrame = skb->data + 8;
 424         }
 425         else {
 426             return false;
 427         }
 428     }
 429
 430     //
 431     // Management & Control frame Handle
 432     //
 433     if ((IS_TYPE_DATA((pbyFrame))) == false) {
 434         // Handle Control & Manage Frame
 435
 436         if (IS_TYPE_MGMT((pbyFrame))) {
 437             u8 * pbyData1;
 438             u8 * pbyData2;
 439
 440             pRxPacket = &(pRCB->sMngPacket);
 441             pRxPacket->p80211Header = (PUWLAN_80211HDR)(pbyFrame);
 442             pRxPacket->cbMPDULen = FrameSize;
 443             pRxPacket->uRSSI = *pbyRSSI;
 444             pRxPacket->bySQ = *pbySQ;
 445                 pRxPacket->qwLocalTSF = cpu_to_le64(*pqwTSFTime);
 446             if (bIsWEP) {
 447                 // strip IV
 448                 pbyData1 = WLAN_HDR_A3_DATA_PTR(pbyFrame);
 449                 pbyData2 = WLAN_HDR_A3_DATA_PTR(pbyFrame) + 4;
 450                 for (ii = 0; ii < (FrameSize - 4); ii++) {
 451                     *pbyData1 = *pbyData2;
 452                      pbyData1++;
 453                      pbyData2++;
 454                 }
 455             }
 456
 457             pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate);
 458
 459             if ( *pbyRxSts == 0 ) {
 460                 //Discard beacon packet which channel is 0
 461                 if ( (WLAN_GET_FC_FSTYPE((pRxPacket->p80211Header->sA3.wFrameCtl)) == WLAN_FSTYPE_BEACON) ||
 462                      (WLAN_GET_FC_FSTYPE((pRxPacket->p80211Header->sA3.wFrameCtl)) == WLAN_FSTYPE_PROBERESP) ) {
 463                         return false;
 464                 }
 465             }
 466             pRxPacket->byRxChannel = (*pbyRxSts) >> 2;
 467
 468             //
 469             // Insert the RCB in the Recv Mng list
 470             //
 471             EnqueueRCB(pDevice->FirstRecvMngList, pDevice->LastRecvMngList, pRCBIndicate);
 472             pDevice->NumRecvMngList++;
 473             if ( bDeFragRx == false) {
 474                 pRCB->Ref++;
 475             }
 476             if (pDevice->bIsRxMngWorkItemQueued == false) {
 477                 pDevice->bIsRxMngWorkItemQueued = true;
 478                 schedule_work(&pDevice->rx_mng_work_item);
 479             }
 480
 481         }
 482         else {
 483             // Control Frame
 484         };
 485         return false;
 486     }
 487     else {
 488         if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 489             //In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC.
 490             if ( !(*pbyRsr & RSR_BSSIDOK)) {
 491                 if (bDeFragRx) {
 492                     if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 493                         DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
 494                         pDevice->dev->name);
 495                     }
 496                 }
 497                 return false;
 498             }
 499         }
 500         else {
 501             // discard DATA packet while not associate || BSSID error
 502             if ((pDevice->bLinkPass == false) ||
 503                 !(*pbyRsr & RSR_BSSIDOK)) {
 504                 if (bDeFragRx) {
 505                     if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 506                         DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
 507                         pDevice->dev->name);
 508                     }
 509                 }
 510                 return false;
 511             }
 512    //mike add:station mode check eapol-key challenge--->
 513           {
 514             u8  Protocol_Version;    //802.1x Authentication
 515             u8  Packet_Type;           //802.1x Authentication
 516             u8  Descriptor_type;
 517              u16 Key_info;
 518               if (bIsWEP)
 519                   cbIVOffset = 8;
 520               else
 521                   cbIVOffset = 0;
 522               wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
 523                           skb->data[cbIVOffset + 8 + 24 + 6 + 1];
 524               Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1];
 525               Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1];
 526              if (wEtherType == ETH_P_PAE) {         //Protocol Type in LLC-Header
 527                   if(((Protocol_Version==1) ||(Protocol_Version==2)) &&
 528                      (Packet_Type==3)) {  //802.1x OR eapol-key challenge frame receive
 529                         bRxeapol_key = true;
 530                       Descriptor_type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1+1+2];
 531                       Key_info = (skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1+1+2+1]<<8) |skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1+1+2+2] ;
 532                       if(Descriptor_type==2) {    //RSN
 533                          //  printk("WPA2_Rx_eapol-key_info<-----:%x\n",Key_info);
 534                       }
 535                      else  if(Descriptor_type==254) {
 536                         //  printk("WPA_Rx_eapol-key_info<-----:%x\n",Key_info);
 537                      }
 538                   }
 539               }
 540           }
 541     //mike add:station mode check eapol-key challenge<---
 542         }
 543     }
 544
 545 // Data frame Handle
 546
 547     if (pDevice->bEnablePSMode) {
 548         if (IS_FC_MOREDATA((pbyFrame))) {
 549             if (*pbyRsr & RSR_ADDROK) {
 550                 //PSbSendPSPOLL((PSDevice)pDevice);
 551             }
 552         }
 553         else {
 554             if (pMgmt->bInTIMWake == true) {
 555                 pMgmt->bInTIMWake = false;
 556             }
 557         }
 558     }
 559
 560     // Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps
 561     if (pDevice->bDiversityEnable && (FrameSize>50) &&
 562         pDevice->op_mode == NL80211_IFTYPE_STATION &&
 563        (pDevice->bLinkPass == true)) {
 564         BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0);
 565     }
 566
 567     // ++++++++ For BaseBand Algorithm +++++++++++++++
 568     pDevice->uCurrRSSI = *pbyRSSI;
 569     pDevice->byCurrSQ = *pbySQ;
 570
 571     // todo
 572 /*
 573     if ((*pbyRSSI != 0) &&
 574         (pMgmt->pCurrBSS!=NULL)) {
 575         RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
 576         // Monitor if RSSI is too strong.
 577         pMgmt->pCurrBSS->byRSSIStatCnt++;
 578         pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT;
 579         pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm;
 580         for (ii = 0; ii < RSSI_STAT_COUNT; ii++) {
 581                 if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0) {
 582                         pMgmt->pCurrBSS->ldBmMAX =
 583                                 max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm);
 584                 }
 585         }
 586     }
 587 */
 588
 589     if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 590         if (bIsWEP) {
 591             FrameSize -= 8;  //MIC
 592         }
 593     }
 594
 595     //--------------------------------------------------------------------------------
 596     // Soft MIC
 597     if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
 598         if (bIsWEP) {
 599             u32 *          pdwMIC_L;
 600             u32 *          pdwMIC_R;
 601             u32           dwMIC_Priority;
 602             u32           dwMICKey0 = 0, dwMICKey1 = 0;
 603             u32           dwLocalMIC_L = 0;
 604             u32           dwLocalMIC_R = 0;
 605
 606             if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 607                 dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 608                 dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 609             }
 610             else {
 611                 if (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) {
 612                     dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 613                     dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 614                 } else if ((pKey->dwKeyIndex & BIT28) == 0) {
 615                     dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
 616                     dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
 617                 } else {
 618                     dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
 619                     dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
 620                 }
 621             }
 622
 623             MIC_vInit(dwMICKey0, dwMICKey1);
 624             MIC_vAppend((u8 *)&(pDevice->sRxEthHeader.h_dest[0]), 12);
 625             dwMIC_Priority = 0;
 626             MIC_vAppend((u8 *)&dwMIC_Priority, 4);
 627             // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV.
 628             MIC_vAppend((u8 *)(skb->data + 8 + WLAN_HDR_ADDR3_LEN + 8),
 629                         FrameSize - WLAN_HDR_ADDR3_LEN - 8);
 630             MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R);
 631             MIC_vUnInit();
 632
 633             pdwMIC_L = (u32 *)(skb->data + 8 + FrameSize);
 634             pdwMIC_R = (u32 *)(skb->data + 8 + FrameSize + 4);
 635
 636             if ((cpu_to_le32(*pdwMIC_L) != dwLocalMIC_L) || (cpu_to_le32(*pdwMIC_R) != dwLocalMIC_R) ||
 637                 (pDevice->bRxMICFail == true)) {
 638                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"MIC comparison is fail!\n");
 639                 pDevice->bRxMICFail = false;
 640                 if (bDeFragRx) {
 641                     if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 642                         DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
 643                             pDevice->dev->name);
 644                     }
 645                 }
 646                                 //send event to wpa_supplicant
 647                                 //if(pDevice->bWPASuppWextEnabled == true)
 648                                 {
 649                                         union iwreq_data wrqu;
 650                                         struct iw_michaelmicfailure ev;
 651                                         int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits
 652                                         memset(&ev, 0, sizeof(ev));
 653                                         ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
 654                                         if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 655                                                         (pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
 656                                                                 (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
 657                                                 ev.flags |= IW_MICFAILURE_PAIRWISE;
 658                                         } else {
 659                                                 ev.flags |= IW_MICFAILURE_GROUP;
 660                                         }
 661
 662                                         ev.src_addr.sa_family = ARPHRD_ETHER;
 663                                         memcpy(ev.src_addr.sa_data, pMACHeader->addr2, ETH_ALEN);
 664                                         memset(&wrqu, 0, sizeof(wrqu));
 665                                         wrqu.data.length = sizeof(ev);
 666                         PRINT_K("wireless_send_event--->IWEVMICHAELMICFAILURE\n");
 667                                         wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
 668
 669                                 }
 670
 671                 return false;
 672
 673             }
 674         }
 675     } //---end of SOFT MIC-----------------------------------------------------------------------
 676
 677     // ++++++++++ Reply Counter Check +++++++++++++
 678
 679     if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) ||
 680                            (pKey->byCipherSuite == KEY_CTL_CCMP))) {
 681         if (bIsWEP) {
 682             u16        wLocalTSC15_0 = 0;
 683             u32       dwLocalTSC47_16 = 0;
 684             unsigned long long       RSC = 0;
 685             // endian issues
 686             RSC = *((unsigned long long *) &(pKey->KeyRSC));
 687             wLocalTSC15_0 = (u16) RSC;
 688             dwLocalTSC47_16 = (u32) (RSC>>16);
 689
 690             RSC = dwRxTSC47_16;
 691             RSC <<= 16;
 692             RSC += wRxTSC15_0;
 693                 memcpy(&(pKey->KeyRSC), &RSC,  sizeof(u64));
 694
 695                 if (pDevice->vnt_mgmt.eCurrMode == WMAC_MODE_ESS_STA &&
 696                         pDevice->vnt_mgmt.eCurrState == WMAC_STATE_ASSOC) {
 697                         /* check RSC */
 698                 if ( (wRxTSC15_0 < wLocalTSC15_0) &&
 699                      (dwRxTSC47_16 <= dwLocalTSC47_16) &&
 700                      !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) {
 701                     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"TSC is illegal~~!\n ");
 702
 703                     if (bDeFragRx) {
 704                         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 705                             DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
 706                                 pDevice->dev->name);
 707                         }
 708                     }
 709                     return false;
 710                 }
 711             }
 712         }
 713     } // ----- End of Reply Counter Check --------------------------
 714
 715     s_vProcessRxMACHeader(pDevice, (u8 *)(skb->data+8), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset);
 716     FrameSize -= cbHeaderOffset;
 717     cbHeaderOffset += 8;        // 8 is Rcv buffer header
 718
 719     // Null data, framesize = 12
 720     if (FrameSize < 12)
 721         return false;
 722
 723         skb->data += cbHeaderOffset;
 724         skb->tail += cbHeaderOffset;
 725     skb_put(skb, FrameSize);
 726     skb->protocol=eth_type_trans(skb, skb->dev);
 727     skb->ip_summed=CHECKSUM_NONE;
 728     pStats->rx_bytes +=skb->len;
 729     pStats->rx_packets++;
 730     netif_rx(skb);
 731     if (bDeFragRx) {
 732         if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
 733             DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
 734                 pDevice->dev->name);
 735         }
 736         return false;
 737     }
 738
 739     return true;
 740 }
 741
 742 static int s_bHandleRxEncryption(struct vnt_private *pDevice, u8 *pbyFrame,
 743         u32 FrameSize, u8 *pbyRsr, u8 *pbyNewRsr, PSKeyItem *pKeyOut,
 744         s32 *pbExtIV, u16 *pwRxTSC15_0, u32 *pdwRxTSC47_16)
 745 {
 746         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 747         u32 PayloadLen = FrameSize;
 748         u8 *pbyIV;
 749         u8 byKeyIdx;
 750         PSKeyItem pKey = NULL;
 751         u8 byDecMode = KEY_CTL_WEP;
 752
 753     *pwRxTSC15_0 = 0;
 754     *pdwRxTSC47_16 = 0;
 755
 756     pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
 757     if ( WLAN_GET_FC_TODS(*(u16 *)pbyFrame) &&
 758          WLAN_GET_FC_FROMDS(*(u16 *)pbyFrame) ) {
 759          pbyIV += 6;             // 6 is 802.11 address4
 760          PayloadLen -= 6;
 761     }
 762     byKeyIdx = (*(pbyIV+3) & 0xc0);
 763     byKeyIdx >>= 6;
 764     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"\nKeyIdx: %d\n", byKeyIdx);
 765
 766     if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
 767         (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
 768         (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
 769         (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
 770         (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
 771         if (((*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) &&
 772             (pMgmt->byCSSPK != KEY_CTL_NONE)) {
 773             // unicast pkt use pairwise key
 774             DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"unicast pkt\n");
 775             if (KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, 0xFFFFFFFF, &pKey) == true) {
 776                 if (pMgmt->byCSSPK == KEY_CTL_TKIP)
 777                     byDecMode = KEY_CTL_TKIP;
 778                 else if (pMgmt->byCSSPK == KEY_CTL_CCMP)
 779                     byDecMode = KEY_CTL_CCMP;
 780             }
 781             DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"unicast pkt: %d, %p\n", byDecMode, pKey);
 782         } else {
 783             // use group key
 784             KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, byKeyIdx, &pKey);
 785             if (pMgmt->byCSSGK == KEY_CTL_TKIP)
 786                 byDecMode = KEY_CTL_TKIP;
 787             else if (pMgmt->byCSSGK == KEY_CTL_CCMP)
 788                 byDecMode = KEY_CTL_CCMP;
 789             DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"group pkt: %d, %d, %p\n", byKeyIdx, byDecMode, pKey);
 790         }
 791     }
 792     // our WEP only support Default Key
 793     if (pKey == NULL) {
 794         // use default group key
 795         KeybGetKey(&(pDevice->sKey), pDevice->abyBroadcastAddr, byKeyIdx, &pKey);
 796         if (pMgmt->byCSSGK == KEY_CTL_TKIP)
 797             byDecMode = KEY_CTL_TKIP;
 798         else if (pMgmt->byCSSGK == KEY_CTL_CCMP)
 799             byDecMode = KEY_CTL_CCMP;
 800     }
 801     *pKeyOut = pKey;
 802
 803     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"AES:%d %d %d\n", pMgmt->byCSSPK, pMgmt->byCSSGK, byDecMode);
 804
 805     if (pKey == NULL) {
 806         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"pKey == NULL\n");
 807         return false;
 808     }
 809     if (byDecMode != pKey->byCipherSuite) {
 810         *pKeyOut = NULL;
 811         return false;
 812     }
 813     if (byDecMode == KEY_CTL_WEP) {
 814         // handle WEP
 815         if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
 816                 (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) {
 817             // Software WEP
 818             // 1. 3253A
 819             // 2. WEP 256
 820
 821             PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
 822             memcpy(pDevice->abyPRNG, pbyIV, 3);
 823             memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
 824             rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
 825             rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
 826
 827             if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) {
 828                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
 829             }
 830         }
 831     } else if ((byDecMode == KEY_CTL_TKIP) ||
 832                (byDecMode == KEY_CTL_CCMP)) {
 833         // TKIP/AES
 834
 835         PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
 836         *pdwRxTSC47_16 = cpu_to_le32(*(u32 *)(pbyIV + 4));
 837         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ExtIV: %x\n", *pdwRxTSC47_16);
 838         if (byDecMode == KEY_CTL_TKIP) {
 839             *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
 840         } else {
 841             *pwRxTSC15_0 = cpu_to_le16(*(u16 *)pbyIV);
 842         }
 843         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"TSC0_15: %x\n", *pwRxTSC15_0);
 844
 845         if ((byDecMode == KEY_CTL_TKIP) &&
 846             (pDevice->byLocalID <= REV_ID_VT3253_A1)) {
 847             // Software TKIP
 848             // 1. 3253 A
 849             struct ieee80211_hdr *pMACHeader = (struct ieee80211_hdr *) (pbyFrame);
 850             TKIPvMixKey(pKey->abyKey, pMACHeader->addr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
 851             rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
 852             rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
 853             if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
 854                 *pbyNewRsr |= NEWRSR_DECRYPTOK;
 855                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV OK!\n");
 856             } else {
 857                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV FAIL!!!\n");
 858                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"PayloadLen = %d\n", PayloadLen);
 859             }
 860         }
 861     }// end of TKIP/AES
 862
 863     if ((*(pbyIV+3) & 0x20) != 0)
 864         *pbExtIV = true;
 865     return true;
 866 }
 867
 868 void RXvWorkItem(struct work_struct *work)
 869 {
 870         struct vnt_private *priv =
 871                 container_of(work, struct vnt_private, read_work_item);
 872         int status;
 873         struct vnt_rcb *rcb = NULL;
 874
 875         if (priv->Flags & fMP_DISCONNECTED)
 876                 return;
 877
 878         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Rx Polling Thread\n");
 879
 880         spin_lock_irq(&priv->lock);
 881
 882         while ((priv->Flags & fMP_POST_READS) && MP_IS_READY(priv) &&
 883                         (priv->NumRecvFreeList != 0)) {
 884                 rcb = priv->FirstRecvFreeList;
 885
 886                 priv->NumRecvFreeList--;
 887
 888                 DequeueRCB(priv->FirstRecvFreeList, priv->LastRecvFreeList);
 889
 890                 status = PIPEnsBulkInUsbRead(priv, rcb);
 891         }
 892
 893         priv->bIsRxWorkItemQueued = false;
 894
 895         spin_unlock_irq(&priv->lock);
 896 }
 897
 898 void RXvFreeRCB(struct vnt_rcb *rcb, int re_alloc_skb)
 899 {
 900         struct vnt_private *priv = rcb->pDevice;
 901
 902         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->RXvFreeRCB\n");
 903
 904         if (re_alloc_skb == false) {
 905                 kfree_skb(rcb->skb);
 906                 re_alloc_skb = true;
 907         }
 908
 909         if (re_alloc_skb == true) {
 910                 rcb->skb = netdev_alloc_skb(priv->dev, priv->rx_buf_sz);
 911                 /* TODO error handling */
 912                 if (!rcb->skb) {
 913                         DBG_PRT(MSG_LEVEL_ERR, KERN_ERR
 914                                 " Failed to re-alloc rx skb\n");
 915                 }
 916         }
 917
 918         /* Insert the RCB back in the Recv free list */
 919         EnqueueRCB(priv->FirstRecvFreeList, priv->LastRecvFreeList, rcb);
 920         priv->NumRecvFreeList++;
 921
 922         if ((priv->Flags & fMP_POST_READS) && MP_IS_READY(priv) &&
 923                         (priv->bIsRxWorkItemQueued == false)) {
 924                 priv->bIsRxWorkItemQueued = true;
 925                 schedule_work(&priv->read_work_item);
 926         }
 927
 928         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"<----RXFreeRCB %d %d\n",
 929                         priv->NumRecvFreeList, priv->NumRecvMngList);
 930 }
 931
 932 void RXvMngWorkItem(struct work_struct *work)
 933 {
 934         struct vnt_private *pDevice =
 935                 container_of(work, struct vnt_private, rx_mng_work_item);
 936         struct vnt_rcb *pRCB = NULL;
 937         struct vnt_rx_mgmt *pRxPacket;
 938         int bReAllocSkb = false;
 939         unsigned long flags;
 940
 941         if (pDevice->Flags & fMP_DISCONNECTED)
 942                 return;
 943
 944     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Rx Mng Thread\n");
 945
 946     while (pDevice->NumRecvMngList!=0)
 947     {
 948         spin_lock_irqsave(&pDevice->lock, flags);
 949
 950         pRCB = pDevice->FirstRecvMngList;
 951         pDevice->NumRecvMngList--;
 952         DequeueRCB(pDevice->FirstRecvMngList, pDevice->LastRecvMngList);
 953
 954         spin_unlock_irqrestore(&pDevice->lock, flags);
 955
 956         if(!pRCB){
 957             break;
 958         }
 959         pRxPacket = &(pRCB->sMngPacket);
 960         vMgrRxManagePacket(pDevice, &pDevice->vnt_mgmt, pRxPacket);
 961         pRCB->Ref--;
 962         if (pRCB->Ref == 0) {
 963                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"RxvFreeMng %d %d\n",
 964                         pDevice->NumRecvFreeList, pDevice->NumRecvMngList);
 965
 966                 spin_lock_irqsave(&pDevice->lock, flags);
 967
 968                 RXvFreeRCB(pRCB, bReAllocSkb);
 969
 970                 spin_unlock_irqrestore(&pDevice->lock, flags);
 971         } else {
 972             DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Rx Mng Only we have the right to free RCB\n");
 973         }
 974     }
 975
 976         pDevice->bIsRxMngWorkItemQueued = false;
 977 }
 978