drivers/staging/vt6656/bssdb.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: bssdb.c
  20  *
  21  * Purpose: Handles the Basic Service Set & Node Database functions
  22  *
  23  * Functions:
  24  *      BSSpSearchBSSList - Search known BSS list for Desire SSID or BSSID
  25  *      BSSvClearBSSList - Clear BSS List
  26  *      BSSbInsertToBSSList - Insert a BSS set into known BSS list
  27  *      BSSbUpdateToBSSList - Update BSS set in known BSS list
  28  *      BSSbIsSTAInNodeDB - Search Node DB table to find the index of matched DstAddr
  29  *      BSSvCreateOneNode - Allocate an Node for Node DB
  30  *      BSSvUpdateAPNode - Update AP Node content in Index 0 of KnownNodeDB
  31  *      BSSvSecondCallBack - One second timer callback function to update Node DB info & AP link status
  32  *      BSSvUpdateNodeTxCounter - Update Tx attemps, Tx failure counter in Node DB for auto-fall back rate control
  33  *
  34  * Revision History:
  35  *
  36  * Author: Lyndon Chen
  37  *
  38  * Date: July 17, 2002
  39  *
  40  */
  41
  42 #include "ttype.h"
  43 #include "tmacro.h"
  44 #include "tether.h"
  45 #include "device.h"
  46 #include "80211hdr.h"
  47 #include "bssdb.h"
  48 #include "wmgr.h"
  49 #include "datarate.h"
  50 #include "desc.h"
  51 #include "wcmd.h"
  52 #include "wpa.h"
  53 #include "baseband.h"
  54 #include "rf.h"
  55 #include "card.h"
  56 #include "mac.h"
  57 #include "wpa2.h"
  58 #include "control.h"
  59 #include "rndis.h"
  60 #include "iowpa.h"
  61
  62 /*---------------------  Static Definitions -------------------------*/
  63
  64
  65
  66
  67 /*---------------------  Static Classes  ----------------------------*/
  68
  69 /*---------------------  Static Variables  --------------------------*/
  70 static int          msglevel                =MSG_LEVEL_INFO;
  71 //static int          msglevel                =MSG_LEVEL_DEBUG;
  72
  73
  74
  75 const WORD             awHWRetry0[5][5] = {
  76                                             {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
  77                                             {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
  78                                             {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
  79                                             {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
  80                                             {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
  81                                            };
  82 const WORD             awHWRetry1[5][5] = {
  83                                             {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
  84                                             {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
  85                                             {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
  86                                             {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
  87                                             {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
  88                                            };
  89
  90
  91
  92 /*---------------------  Static Functions  --------------------------*/
  93
  94 void s_vCheckSensitivity(void *hDeviceContext);
  95 void s_vCheckPreEDThreshold(void *hDeviceContext);
  96 void s_uCalculateLinkQual(void *hDeviceContext);
  97
  98 /*---------------------  Export Variables  --------------------------*/
  99
 100
 101 /*---------------------  Export Functions  --------------------------*/
 102
 103
 104
 105
 106
 107 /*+
 108  *
 109  * Routine Description:
 110  *    Search known BSS list for Desire SSID or BSSID.
 111  *
 112  * Return Value:
 113  *    PTR to KnownBSS or NULL
 114  *
 115 -*/
 116
 117 PKnownBSS BSSpSearchBSSList(void *hDeviceContext,
 118                             PBYTE pbyDesireBSSID,
 119                             PBYTE pbyDesireSSID,
 120                             CARD_PHY_TYPE ePhyType)
 121 {
 122     PSDevice        pDevice = (PSDevice)hDeviceContext;
 123     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 124     PBYTE           pbyBSSID = NULL;
 125     PWLAN_IE_SSID   pSSID = NULL;
 126     PKnownBSS       pCurrBSS = NULL;
 127     PKnownBSS       pSelect = NULL;
 128     BYTE                 ZeroBSSID[WLAN_BSSID_LEN]={0x00,0x00,0x00,0x00,0x00,0x00};
 129     unsigned int ii = 0;
 130     unsigned int jj = 0;
 131     if (pbyDesireBSSID != NULL) {
 132         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"BSSpSearchBSSList BSSID[%02X %02X %02X-%02X %02X %02X]\n",
 133                             *pbyDesireBSSID,*(pbyDesireBSSID+1),*(pbyDesireBSSID+2),
 134                             *(pbyDesireBSSID+3),*(pbyDesireBSSID+4),*(pbyDesireBSSID+5));
 135         if ((!is_broadcast_ether_addr(pbyDesireBSSID)) &&
 136              (memcmp(pbyDesireBSSID, ZeroBSSID, 6)!= 0)){
 137             pbyBSSID = pbyDesireBSSID;
 138         }
 139     }
 140     if (pbyDesireSSID != NULL) {
 141         if (((PWLAN_IE_SSID)pbyDesireSSID)->len != 0) {
 142             pSSID = (PWLAN_IE_SSID) pbyDesireSSID;
 143         }
 144     }
 145
 146     if ((pbyBSSID != NULL)&&(pDevice->bRoaming == FALSE)) {
 147         // match BSSID first
 148         for (ii = 0; ii <MAX_BSS_NUM; ii++) {
 149             pCurrBSS = &(pMgmt->sBSSList[ii]);
 150
 151            pCurrBSS->bSelected = FALSE;
 152
 153             if ((pCurrBSS->bActive) &&
 154                 (pCurrBSS->bSelected == FALSE)) {
 155                     if (!compare_ether_addr(pCurrBSS->abyBSSID, pbyBSSID)) {
 156                     if (pSSID != NULL) {
 157                         // compare ssid
 158                         if ( !memcmp(pSSID->abySSID,
 159                             ((PWLAN_IE_SSID)pCurrBSS->abySSID)->abySSID,
 160                             pSSID->len)) {
 161                             if ((pMgmt->eConfigMode == WMAC_CONFIG_AUTO) ||
 162                                 ((pMgmt->eConfigMode == WMAC_CONFIG_IBSS_STA) && WLAN_GET_CAP_INFO_IBSS(pCurrBSS->wCapInfo)) ||
 163                                 ((pMgmt->eConfigMode == WMAC_CONFIG_ESS_STA) && WLAN_GET_CAP_INFO_ESS(pCurrBSS->wCapInfo))
 164                                 ) {
 165                                 pCurrBSS->bSelected = TRUE;
 166                                 return(pCurrBSS);
 167                             }
 168                         }
 169                     } else {
 170                         if ((pMgmt->eConfigMode == WMAC_CONFIG_AUTO) ||
 171                             ((pMgmt->eConfigMode == WMAC_CONFIG_IBSS_STA) && WLAN_GET_CAP_INFO_IBSS(pCurrBSS->wCapInfo)) ||
 172                             ((pMgmt->eConfigMode == WMAC_CONFIG_ESS_STA) && WLAN_GET_CAP_INFO_ESS(pCurrBSS->wCapInfo))
 173                             ) {
 174                             pCurrBSS->bSelected = TRUE;
 175                             return(pCurrBSS);
 176                         }
 177                     }
 178                 }
 179             }
 180         }
 181     } else {
 182         // ignore BSSID
 183         for (ii = 0; ii <MAX_BSS_NUM; ii++) {
 184             pCurrBSS = &(pMgmt->sBSSList[ii]);
 185
 186            //2007-0721-01<Mark>by MikeLiu
 187          //   if ((pCurrBSS->bActive) &&
 188          //       (pCurrBSS->bSelected == FALSE)) {
 189
 190           pCurrBSS->bSelected = FALSE;
 191           if (pCurrBSS->bActive) {
 192
 193                 if (pSSID != NULL) {
 194                     // matched SSID
 195                     if (memcmp(pSSID->abySSID,
 196                         ((PWLAN_IE_SSID)pCurrBSS->abySSID)->abySSID,
 197                         pSSID->len) ||
 198                         (pSSID->len != ((PWLAN_IE_SSID)pCurrBSS->abySSID)->len)) {
 199                         // SSID not match skip this BSS
 200                         continue;
 201                       }
 202                 }
 203                 if (((pMgmt->eConfigMode == WMAC_CONFIG_IBSS_STA) && WLAN_GET_CAP_INFO_ESS(pCurrBSS->wCapInfo)) ||
 204                     ((pMgmt->eConfigMode == WMAC_CONFIG_ESS_STA) && WLAN_GET_CAP_INFO_IBSS(pCurrBSS->wCapInfo))
 205                     ){
 206                     // Type not match skip this BSS
 207                     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"BSS type mismatch.... Config[%d] BSS[0x%04x]\n", pMgmt->eConfigMode, pCurrBSS->wCapInfo);
 208                     continue;
 209                 }
 210
 211                 if (ePhyType != PHY_TYPE_AUTO) {
 212                     if (((ePhyType == PHY_TYPE_11A) && (PHY_TYPE_11A != pCurrBSS->eNetworkTypeInUse)) ||
 213                         ((ePhyType != PHY_TYPE_11A) && (PHY_TYPE_11A == pCurrBSS->eNetworkTypeInUse))) {
 214                         // PhyType not match skip this BSS
 215                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Physical type mismatch.... ePhyType[%d] BSS[%d]\n", ePhyType, pCurrBSS->eNetworkTypeInUse);
 216                         continue;
 217                     }
 218                 }
 219
 220         pMgmt->pSameBSS[jj].uChannel = pCurrBSS->uChannel;
 221         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"BSSpSearchBSSList pSelect1[%02X %02X %02X-%02X %02X %02X]\n",*pCurrBSS->abyBSSID,*(pCurrBSS->abyBSSID+1),*(pCurrBSS->abyBSSID+2),*(pCurrBSS->abyBSSID+3),*(pCurrBSS->abyBSSID+4),*(pCurrBSS->abyBSSID+5));
 222         jj++;
 223
 224
 225                 if (pSelect == NULL) {
 226                     pSelect = pCurrBSS;
 227                 } else {
 228                     // compare RSSI, select signal strong one
 229                     if (pCurrBSS->uRSSI < pSelect->uRSSI) {
 230                         pSelect = pCurrBSS;
 231                     }
 232                 }
 233             }
 234         }
 235
 236 pDevice->bSameBSSMaxNum = jj;
 237
 238         if (pSelect != NULL) {
 239             pSelect->bSelected = TRUE;
 240                         if (pDevice->bRoaming == FALSE)  {
 241         //       Einsn Add @20070907
 242                                 memset(pbyDesireSSID, 0, WLAN_IEHDR_LEN + WLAN_SSID_MAXLEN + 1);
 243                         memcpy(pbyDesireSSID,pCurrBSS->abySSID,WLAN_IEHDR_LEN + WLAN_SSID_MAXLEN + 1) ;
 244                                                 }
 245
 246             return(pSelect);
 247         }
 248     }
 249     return(NULL);
 250
 251 }
 252
 253
 254 /*+
 255  *
 256  * Routine Description:
 257  *    Clear BSS List
 258  *
 259  * Return Value:
 260  *    None.
 261  *
 262 -*/
 263
 264
 265 void BSSvClearBSSList(void *hDeviceContext, BOOL bKeepCurrBSSID)
 266 {
 267     PSDevice     pDevice = (PSDevice)hDeviceContext;
 268     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 269     unsigned int            ii;
 270
 271     for (ii = 0; ii < MAX_BSS_NUM; ii++) {
 272         if (bKeepCurrBSSID) {
 273             if (pMgmt->sBSSList[ii].bActive &&
 274                 !compare_ether_addr(pMgmt->sBSSList[ii].abyBSSID,
 275                                     pMgmt->abyCurrBSSID)) {
 276  //mike mark: there are two same BSSID in list if that AP is in hidden ssid mode,one 's SSID is null,
 277  //                 but other's is obvious, so if it acssociate with your STA  exactly,you must keep two
 278  //                 of them!!!!!!!!!
 279                // bKeepCurrBSSID = FALSE;
 280                 continue;
 281             }
 282         }
 283
 284         pMgmt->sBSSList[ii].bActive = FALSE;
 285         memset(&pMgmt->sBSSList[ii], 0, sizeof(KnownBSS));
 286     }
 287     BSSvClearAnyBSSJoinRecord(pDevice);
 288 }
 289
 290
 291
 292 /*+
 293  *
 294  * Routine Description:
 295  *    search BSS list by BSSID & SSID if matched
 296  *
 297  * Return Value:
 298  *    TRUE if found.
 299  *
 300 -*/
 301 PKnownBSS BSSpAddrIsInBSSList(void *hDeviceContext,
 302                               PBYTE abyBSSID,
 303                               PWLAN_IE_SSID pSSID)
 304 {
 305     PSDevice     pDevice = (PSDevice)hDeviceContext;
 306     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 307     PKnownBSS       pBSSList = NULL;
 308     unsigned int            ii;
 309
 310     for (ii = 0; ii < MAX_BSS_NUM; ii++) {
 311         pBSSList = &(pMgmt->sBSSList[ii]);
 312         if (pBSSList->bActive) {
 313                 if (!compare_ether_addr(pBSSList->abyBSSID, abyBSSID)) {
 314                 if (pSSID->len == ((PWLAN_IE_SSID)pBSSList->abySSID)->len){
 315                     if (memcmp(pSSID->abySSID,
 316                             ((PWLAN_IE_SSID)pBSSList->abySSID)->abySSID,
 317                             pSSID->len) == 0)
 318                         return pBSSList;
 319                 }
 320             }
 321         }
 322     }
 323
 324     return NULL;
 325 };
 326
 327
 328
 329 /*+
 330  *
 331  * Routine Description:
 332  *    Insert a BSS set into known BSS list
 333  *
 334  * Return Value:
 335  *    TRUE if success.
 336  *
 337 -*/
 338
 339 BOOL BSSbInsertToBSSList(void *hDeviceContext,
 340                          PBYTE abyBSSIDAddr,
 341                          QWORD qwTimestamp,
 342                          WORD wBeaconInterval,
 343                          WORD wCapInfo,
 344                          BYTE byCurrChannel,
 345                          PWLAN_IE_SSID pSSID,
 346                          PWLAN_IE_SUPP_RATES pSuppRates,
 347                          PWLAN_IE_SUPP_RATES pExtSuppRates,
 348                          PERPObject psERP,
 349                          PWLAN_IE_RSN pRSN,
 350                          PWLAN_IE_RSN_EXT pRSNWPA,
 351                          PWLAN_IE_COUNTRY pIE_Country,
 352                          PWLAN_IE_QUIET pIE_Quiet,
 353                          unsigned int uIELength,
 354                          PBYTE pbyIEs,
 355                          void *pRxPacketContext)
 356 {
 357
 358     PSDevice     pDevice = (PSDevice)hDeviceContext;
 359     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 360     PSRxMgmtPacket  pRxPacket = (PSRxMgmtPacket)pRxPacketContext;
 361     PKnownBSS       pBSSList = NULL;
 362     unsigned int            ii;
 363     BOOL            bParsingQuiet = FALSE;
 364
 365
 366
 367     pBSSList = (PKnownBSS)&(pMgmt->sBSSList[0]);
 368
 369     for (ii = 0; ii < MAX_BSS_NUM; ii++) {
 370         pBSSList = (PKnownBSS)&(pMgmt->sBSSList[ii]);
 371         if (!pBSSList->bActive)
 372                 break;
 373     }
 374
 375     if (ii == MAX_BSS_NUM){
 376         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Get free KnowBSS node failed.\n");
 377         return FALSE;
 378     }
 379     // save the BSS info
 380     pBSSList->bActive = TRUE;
 381     memcpy( pBSSList->abyBSSID, abyBSSIDAddr, WLAN_BSSID_LEN);
 382     HIDWORD(pBSSList->qwBSSTimestamp) = cpu_to_le32(HIDWORD(qwTimestamp));
 383     LODWORD(pBSSList->qwBSSTimestamp) = cpu_to_le32(LODWORD(qwTimestamp));
 384     pBSSList->wBeaconInterval = cpu_to_le16(wBeaconInterval);
 385     pBSSList->wCapInfo = cpu_to_le16(wCapInfo);
 386     pBSSList->uClearCount = 0;
 387
 388     if (pSSID->len > WLAN_SSID_MAXLEN)
 389         pSSID->len = WLAN_SSID_MAXLEN;
 390     memcpy( pBSSList->abySSID, pSSID, pSSID->len + WLAN_IEHDR_LEN);
 391
 392     pBSSList->uChannel = byCurrChannel;
 393
 394     if (pSuppRates->len > WLAN_RATES_MAXLEN)
 395         pSuppRates->len = WLAN_RATES_MAXLEN;
 396     memcpy( pBSSList->abySuppRates, pSuppRates, pSuppRates->len + WLAN_IEHDR_LEN);
 397
 398     if (pExtSuppRates != NULL) {
 399         if (pExtSuppRates->len > WLAN_RATES_MAXLEN)
 400             pExtSuppRates->len = WLAN_RATES_MAXLEN;
 401         memcpy(pBSSList->abyExtSuppRates, pExtSuppRates, pExtSuppRates->len + WLAN_IEHDR_LEN);
 402         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"BSSbInsertToBSSList: pExtSuppRates->len = %d\n", pExtSuppRates->len);
 403
 404     } else {
 405         memset(pBSSList->abyExtSuppRates, 0, WLAN_IEHDR_LEN + WLAN_RATES_MAXLEN + 1);
 406     }
 407     pBSSList->sERP.byERP = psERP->byERP;
 408     pBSSList->sERP.bERPExist = psERP->bERPExist;
 409
 410     // Check if BSS is 802.11a/b/g
 411     if (pBSSList->uChannel > CB_MAX_CHANNEL_24G) {
 412         pBSSList->eNetworkTypeInUse = PHY_TYPE_11A;
 413     } else {
 414         if (pBSSList->sERP.bERPExist == TRUE) {
 415             pBSSList->eNetworkTypeInUse = PHY_TYPE_11G;
 416         } else {
 417             pBSSList->eNetworkTypeInUse = PHY_TYPE_11B;
 418         }
 419     }
 420
 421     pBSSList->byRxRate = pRxPacket->byRxRate;
 422     pBSSList->qwLocalTSF = pRxPacket->qwLocalTSF;
 423     pBSSList->uRSSI = pRxPacket->uRSSI;
 424     pBSSList->bySQ = pRxPacket->bySQ;
 425
 426    if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 427         (pMgmt->eCurrState == WMAC_STATE_ASSOC)) {
 428         // assoc with BSS
 429         if (pBSSList == pMgmt->pCurrBSS) {
 430             bParsingQuiet = TRUE;
 431         }
 432     }
 433
 434     WPA_ClearRSN(pBSSList);
 435
 436     if (pRSNWPA != NULL) {
 437         unsigned int uLen = pRSNWPA->len + 2;
 438
 439         if (uLen <= (uIELength -
 440                      (unsigned int) (ULONG_PTR) ((PBYTE) pRSNWPA - pbyIEs))) {
 441                 pBSSList->wWPALen = uLen;
 442                 memcpy(pBSSList->byWPAIE, pRSNWPA, uLen);
 443                 WPA_ParseRSN(pBSSList, pRSNWPA);
 444         }
 445     }
 446
 447     WPA2_ClearRSN(pBSSList);
 448
 449     if (pRSN != NULL) {
 450         unsigned int uLen = pRSN->len + 2;
 451
 452         if (uLen <= (uIELength -
 453                      (unsigned int) (ULONG_PTR) ((PBYTE) pRSN - pbyIEs))) {
 454                 pBSSList->wRSNLen = uLen;
 455                 memcpy(pBSSList->byRSNIE, pRSN, uLen);
 456                 WPA2vParseRSN(pBSSList, pRSN);
 457         }
 458     }
 459
 460     if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA2) || (pBSSList->bWPA2Valid == TRUE)) {
 461
 462         PSKeyItem  pTransmitKey = NULL;
 463         BOOL       bIs802_1x = FALSE;
 464
 465         for (ii = 0; ii < pBSSList->wAKMSSAuthCount; ii ++) {
 466             if (pBSSList->abyAKMSSAuthType[ii] == WLAN_11i_AKMSS_802_1X) {
 467                 bIs802_1x = TRUE;
 468                 break;
 469             }
 470         }
 471         if ((bIs802_1x == TRUE) && (pSSID->len == ((PWLAN_IE_SSID)pMgmt->abyDesireSSID)->len) &&
 472             ( !memcmp(pSSID->abySSID, ((PWLAN_IE_SSID)pMgmt->abyDesireSSID)->abySSID, pSSID->len))) {
 473
 474                 bAdd_PMKID_Candidate((void *) pDevice,
 475                                      pBSSList->abyBSSID,
 476                                      &pBSSList->sRSNCapObj);
 477
 478             if ((pDevice->bLinkPass == TRUE) && (pMgmt->eCurrState == WMAC_STATE_ASSOC)) {
 479                 if ((KeybGetTransmitKey(&(pDevice->sKey), pDevice->abyBSSID, PAIRWISE_KEY, &pTransmitKey) == TRUE) ||
 480                     (KeybGetTransmitKey(&(pDevice->sKey), pDevice->abyBSSID, GROUP_KEY, &pTransmitKey) == TRUE)) {
 481                     pDevice->gsPMKIDCandidate.StatusType = Ndis802_11StatusType_PMKID_CandidateList;
 482                     pDevice->gsPMKIDCandidate.Version = 1;
 483
 484                 }
 485
 486             }
 487         }
 488     }
 489
 490     if (pDevice->bUpdateBBVGA) {
 491         // Moniter if RSSI is too strong.
 492         pBSSList->byRSSIStatCnt = 0;
 493         RFvRSSITodBm(pDevice, (BYTE)(pRxPacket->uRSSI), &pBSSList->ldBmMAX);
 494         pBSSList->ldBmAverage[0] = pBSSList->ldBmMAX;
 495         pBSSList->ldBmAverRange = pBSSList->ldBmMAX;
 496         for (ii = 1; ii < RSSI_STAT_COUNT; ii++)
 497             pBSSList->ldBmAverage[ii] = 0;
 498     }
 499
 500     pBSSList->uIELength = uIELength;
 501     if (pBSSList->uIELength > WLAN_BEACON_FR_MAXLEN)
 502         pBSSList->uIELength = WLAN_BEACON_FR_MAXLEN;
 503     memcpy(pBSSList->abyIEs, pbyIEs, pBSSList->uIELength);
 504
 505     return TRUE;
 506 }
 507
 508
 509 /*+
 510  *
 511  * Routine Description:
 512  *    Update BSS set in known BSS list
 513  *
 514  * Return Value:
 515  *    TRUE if success.
 516  *
 517 -*/
 518 // TODO: input structure modify
 519
 520 BOOL BSSbUpdateToBSSList(void *hDeviceContext,
 521                          QWORD qwTimestamp,
 522                          WORD wBeaconInterval,
 523                          WORD wCapInfo,
 524                          BYTE byCurrChannel,
 525                          BOOL bChannelHit,
 526                          PWLAN_IE_SSID pSSID,
 527                          PWLAN_IE_SUPP_RATES pSuppRates,
 528                          PWLAN_IE_SUPP_RATES pExtSuppRates,
 529                          PERPObject psERP,
 530                          PWLAN_IE_RSN pRSN,
 531                          PWLAN_IE_RSN_EXT pRSNWPA,
 532                          PWLAN_IE_COUNTRY pIE_Country,
 533                          PWLAN_IE_QUIET pIE_Quiet,
 534                          PKnownBSS pBSSList,
 535                          unsigned int uIELength,
 536                          PBYTE pbyIEs,
 537                          void *pRxPacketContext)
 538 {
 539     int             ii, jj;
 540     PSDevice        pDevice = (PSDevice)hDeviceContext;
 541     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 542     PSRxMgmtPacket  pRxPacket = (PSRxMgmtPacket)pRxPacketContext;
 543     signed long            ldBm, ldBmSum;
 544     BOOL            bParsingQuiet = FALSE;
 545
 546     if (pBSSList == NULL)
 547         return FALSE;
 548
 549
 550     HIDWORD(pBSSList->qwBSSTimestamp) = cpu_to_le32(HIDWORD(qwTimestamp));
 551     LODWORD(pBSSList->qwBSSTimestamp) = cpu_to_le32(LODWORD(qwTimestamp));
 552     pBSSList->wBeaconInterval = cpu_to_le16(wBeaconInterval);
 553     pBSSList->wCapInfo = cpu_to_le16(wCapInfo);
 554     pBSSList->uClearCount = 0;
 555     pBSSList->uChannel = byCurrChannel;
 556
 557     if (pSSID->len > WLAN_SSID_MAXLEN)
 558         pSSID->len = WLAN_SSID_MAXLEN;
 559
 560     if ((pSSID->len != 0) && (pSSID->abySSID[0] != 0))
 561         memcpy(pBSSList->abySSID, pSSID, pSSID->len + WLAN_IEHDR_LEN);
 562     memcpy(pBSSList->abySuppRates, pSuppRates,pSuppRates->len + WLAN_IEHDR_LEN);
 563
 564     if (pExtSuppRates != NULL) {
 565         memcpy(pBSSList->abyExtSuppRates, pExtSuppRates,pExtSuppRates->len + WLAN_IEHDR_LEN);
 566     } else {
 567         memset(pBSSList->abyExtSuppRates, 0, WLAN_IEHDR_LEN + WLAN_RATES_MAXLEN + 1);
 568     }
 569     pBSSList->sERP.byERP = psERP->byERP;
 570     pBSSList->sERP.bERPExist = psERP->bERPExist;
 571
 572     // Check if BSS is 802.11a/b/g
 573     if (pBSSList->uChannel > CB_MAX_CHANNEL_24G) {
 574         pBSSList->eNetworkTypeInUse = PHY_TYPE_11A;
 575     } else {
 576         if (pBSSList->sERP.bERPExist == TRUE) {
 577             pBSSList->eNetworkTypeInUse = PHY_TYPE_11G;
 578         } else {
 579             pBSSList->eNetworkTypeInUse = PHY_TYPE_11B;
 580         }
 581     }
 582
 583     pBSSList->byRxRate = pRxPacket->byRxRate;
 584     pBSSList->qwLocalTSF = pRxPacket->qwLocalTSF;
 585     if(bChannelHit)
 586         pBSSList->uRSSI = pRxPacket->uRSSI;
 587     pBSSList->bySQ = pRxPacket->bySQ;
 588
 589    if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 590         (pMgmt->eCurrState == WMAC_STATE_ASSOC)) {
 591         // assoc with BSS
 592         if (pBSSList == pMgmt->pCurrBSS) {
 593             bParsingQuiet = TRUE;
 594         }
 595     }
 596
 597    WPA_ClearRSN(pBSSList);         //mike update
 598
 599    if (pRSNWPA != NULL) {
 600         unsigned int uLen = pRSNWPA->len + 2;
 601         if (uLen <= (uIELength -
 602                      (unsigned int) (ULONG_PTR) ((PBYTE) pRSNWPA - pbyIEs))) {
 603                 pBSSList->wWPALen = uLen;
 604                 memcpy(pBSSList->byWPAIE, pRSNWPA, uLen);
 605                 WPA_ParseRSN(pBSSList, pRSNWPA);
 606         }
 607    }
 608
 609    WPA2_ClearRSN(pBSSList);  //mike update
 610
 611     if (pRSN != NULL) {
 612         unsigned int uLen = pRSN->len + 2;
 613         if (uLen <= (uIELength -
 614                         (unsigned int) (ULONG_PTR) ((PBYTE) pRSN - pbyIEs))) {
 615                 pBSSList->wRSNLen = uLen;
 616                 memcpy(pBSSList->byRSNIE, pRSN, uLen);
 617                 WPA2vParseRSN(pBSSList, pRSN);
 618         }
 619     }
 620
 621     if (pRxPacket->uRSSI != 0) {
 622         RFvRSSITodBm(pDevice, (BYTE)(pRxPacket->uRSSI), &ldBm);
 623         // Moniter if RSSI is too strong.
 624         pBSSList->byRSSIStatCnt++;
 625         pBSSList->byRSSIStatCnt %= RSSI_STAT_COUNT;
 626         pBSSList->ldBmAverage[pBSSList->byRSSIStatCnt] = ldBm;
 627         ldBmSum = 0;
 628         for (ii = 0, jj = 0; ii < RSSI_STAT_COUNT; ii++) {
 629                 if (pBSSList->ldBmAverage[ii] != 0) {
 630                         pBSSList->ldBmMAX =
 631                                 max(pBSSList->ldBmAverage[ii], ldBm);
 632                         ldBmSum +=
 633                                 pBSSList->ldBmAverage[ii];
 634                         jj++;
 635                 }
 636         }
 637         pBSSList->ldBmAverRange = ldBmSum /jj;
 638     }
 639
 640     pBSSList->uIELength = uIELength;
 641     if (pBSSList->uIELength > WLAN_BEACON_FR_MAXLEN)
 642         pBSSList->uIELength = WLAN_BEACON_FR_MAXLEN;
 643     memcpy(pBSSList->abyIEs, pbyIEs, pBSSList->uIELength);
 644
 645     return TRUE;
 646 }
 647
 648
 649
 650
 651
 652 /*+
 653  *
 654  * Routine Description:
 655  *    Search Node DB table to find the index of matched DstAddr
 656  *
 657  * Return Value:
 658  *    None
 659  *
 660 -*/
 661
 662 BOOL BSSbIsSTAInNodeDB(void *hDeviceContext,
 663                        PBYTE abyDstAddr,
 664                        unsigned int *puNodeIndex)
 665 {
 666     PSDevice        pDevice = (PSDevice)hDeviceContext;
 667     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 668     unsigned int            ii;
 669
 670     // Index = 0 reserved for AP Node
 671     for (ii = 1; ii < (MAX_NODE_NUM + 1); ii++) {
 672         if (pMgmt->sNodeDBTable[ii].bActive) {
 673                 if (!compare_ether_addr(abyDstAddr,
 674                                         pMgmt->sNodeDBTable[ii].abyMACAddr)) {
 675                 *puNodeIndex = ii;
 676                 return TRUE;
 677             }
 678         }
 679     }
 680
 681    return FALSE;
 682 };
 683
 684
 685
 686 /*+
 687  *
 688  * Routine Description:
 689  *    Find an empty node and allocated; if no empty found,
 690  *    instand used of most inactive one.
 691  *
 692  * Return Value:
 693  *    None
 694  *
 695 -*/
 696 void BSSvCreateOneNode(void *hDeviceContext, unsigned int *puNodeIndex)
 697 {
 698
 699     PSDevice     pDevice = (PSDevice)hDeviceContext;
 700     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 701     unsigned int            ii;
 702     unsigned int            BigestCount = 0;
 703     unsigned int            SelectIndex;
 704     struct sk_buff  *skb;
 705     // Index = 0 reserved for AP Node (In STA mode)
 706     // Index = 0 reserved for Broadcast/MultiCast (In AP mode)
 707     SelectIndex = 1;
 708     for (ii = 1; ii < (MAX_NODE_NUM + 1); ii++) {
 709         if (pMgmt->sNodeDBTable[ii].bActive) {
 710             if (pMgmt->sNodeDBTable[ii].uInActiveCount > BigestCount) {
 711                 BigestCount = pMgmt->sNodeDBTable[ii].uInActiveCount;
 712                 SelectIndex = ii;
 713             }
 714         }
 715         else {
 716             break;
 717         }
 718     }
 719
 720     // if not found replace uInActiveCount is largest one.
 721     if ( ii == (MAX_NODE_NUM + 1)) {
 722         *puNodeIndex = SelectIndex;
 723         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Replace inactive node = %d\n", SelectIndex);
 724         // clear ps buffer
 725         if (pMgmt->sNodeDBTable[*puNodeIndex].sTxPSQueue.next != NULL) {
 726             while ((skb = skb_dequeue(&pMgmt->sNodeDBTable[*puNodeIndex].sTxPSQueue)) != NULL)
 727             dev_kfree_skb(skb);
 728         }
 729     }
 730     else {
 731         *puNodeIndex = ii;
 732     }
 733
 734     memset(&pMgmt->sNodeDBTable[*puNodeIndex], 0, sizeof(KnownNodeDB));
 735     pMgmt->sNodeDBTable[*puNodeIndex].bActive = TRUE;
 736     pMgmt->sNodeDBTable[*puNodeIndex].uRatePollTimeout = FALLBACK_POLL_SECOND;
 737     // for AP mode PS queue
 738     skb_queue_head_init(&pMgmt->sNodeDBTable[*puNodeIndex].sTxPSQueue);
 739     pMgmt->sNodeDBTable[*puNodeIndex].byAuthSequence = 0;
 740     pMgmt->sNodeDBTable[*puNodeIndex].wEnQueueCnt = 0;
 741     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Create node index = %d\n", ii);
 742 };
 743
 744
 745
 746 /*+
 747  *
 748  * Routine Description:
 749  *    Remove Node by NodeIndex
 750  *
 751  *
 752  * Return Value:
 753  *    None
 754  *
 755 -*/
 756
 757 void BSSvRemoveOneNode(void *hDeviceContext, unsigned int uNodeIndex)
 758 {
 759
 760     PSDevice        pDevice = (PSDevice)hDeviceContext;
 761     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 762     BYTE            byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
 763     struct sk_buff  *skb;
 764
 765
 766     while ((skb = skb_dequeue(&pMgmt->sNodeDBTable[uNodeIndex].sTxPSQueue)) != NULL)
 767             dev_kfree_skb(skb);
 768     // clear context
 769     memset(&pMgmt->sNodeDBTable[uNodeIndex], 0, sizeof(KnownNodeDB));
 770     // clear tx bit map
 771     pMgmt->abyPSTxMap[pMgmt->sNodeDBTable[uNodeIndex].wAID >> 3] &=  ~byMask[pMgmt->sNodeDBTable[uNodeIndex].wAID & 7];
 772 };
 773 /*+
 774  *
 775  * Routine Description:
 776  *    Update AP Node content in Index 0 of KnownNodeDB
 777  *
 778  *
 779  * Return Value:
 780  *    None
 781  *
 782 -*/
 783
 784 void BSSvUpdateAPNode(void *hDeviceContext,
 785                       PWORD pwCapInfo,
 786                       PWLAN_IE_SUPP_RATES pSuppRates,
 787                       PWLAN_IE_SUPP_RATES pExtSuppRates)
 788 {
 789     PSDevice     pDevice = (PSDevice)hDeviceContext;
 790     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 791     unsigned int            uRateLen = WLAN_RATES_MAXLEN;
 792
 793     memset(&pMgmt->sNodeDBTable[0], 0, sizeof(KnownNodeDB));
 794
 795     pMgmt->sNodeDBTable[0].bActive = TRUE;
 796     if (pDevice->byBBType == BB_TYPE_11B) {
 797         uRateLen = WLAN_RATES_MAXLEN_11B;
 798     }
 799     pMgmt->abyCurrSuppRates[1] = RATEuSetIE((PWLAN_IE_SUPP_RATES)pSuppRates,
 800                                             (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrSuppRates,
 801                                             uRateLen);
 802     pMgmt->abyCurrExtSuppRates[1] = RATEuSetIE((PWLAN_IE_SUPP_RATES)pExtSuppRates,
 803                                             (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrExtSuppRates,
 804                                             uRateLen);
 805     RATEvParseMaxRate((void *) pDevice,
 806                        (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrSuppRates,
 807                        (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrExtSuppRates,
 808                        TRUE,
 809                        &(pMgmt->sNodeDBTable[0].wMaxBasicRate),
 810                        &(pMgmt->sNodeDBTable[0].wMaxSuppRate),
 811                        &(pMgmt->sNodeDBTable[0].wSuppRate),
 812                        &(pMgmt->sNodeDBTable[0].byTopCCKBasicRate),
 813                        &(pMgmt->sNodeDBTable[0].byTopOFDMBasicRate)
 814                       );
 815     memcpy(pMgmt->sNodeDBTable[0].abyMACAddr, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN);
 816     pMgmt->sNodeDBTable[0].wTxDataRate = pMgmt->sNodeDBTable[0].wMaxSuppRate;
 817     pMgmt->sNodeDBTable[0].bShortPreamble = WLAN_GET_CAP_INFO_SHORTPREAMBLE(*pwCapInfo);
 818     pMgmt->sNodeDBTable[0].uRatePollTimeout = FALLBACK_POLL_SECOND;
 819     // Auto rate fallback function initiation.
 820     // RATEbInit(pDevice);
 821     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"pMgmt->sNodeDBTable[0].wTxDataRate = %d \n", pMgmt->sNodeDBTable[0].wTxDataRate);
 822
 823 };
 824
 825 /*+
 826  *
 827  * Routine Description:
 828  *    Add Multicast Node content in Index 0 of KnownNodeDB
 829  *
 830  *
 831  * Return Value:
 832  *    None
 833  *
 834 -*/
 835
 836 void BSSvAddMulticastNode(void *hDeviceContext)
 837 {
 838     PSDevice     pDevice = (PSDevice)hDeviceContext;
 839     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 840
 841     if (!pDevice->bEnableHostWEP)
 842         memset(&pMgmt->sNodeDBTable[0], 0, sizeof(KnownNodeDB));
 843     memset(pMgmt->sNodeDBTable[0].abyMACAddr, 0xff, WLAN_ADDR_LEN);
 844     pMgmt->sNodeDBTable[0].bActive = TRUE;
 845     pMgmt->sNodeDBTable[0].bPSEnable = FALSE;
 846     skb_queue_head_init(&pMgmt->sNodeDBTable[0].sTxPSQueue);
 847     RATEvParseMaxRate((void *) pDevice,
 848                       (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrSuppRates,
 849                       (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrExtSuppRates,
 850                       TRUE,
 851                       &(pMgmt->sNodeDBTable[0].wMaxBasicRate),
 852                       &(pMgmt->sNodeDBTable[0].wMaxSuppRate),
 853                        &(pMgmt->sNodeDBTable[0].wSuppRate),
 854                       &(pMgmt->sNodeDBTable[0].byTopCCKBasicRate),
 855                       &(pMgmt->sNodeDBTable[0].byTopOFDMBasicRate)
 856                      );
 857     pMgmt->sNodeDBTable[0].wTxDataRate = pMgmt->sNodeDBTable[0].wMaxBasicRate;
 858     pMgmt->sNodeDBTable[0].uRatePollTimeout = FALLBACK_POLL_SECOND;
 859
 860 };
 861
 862 /*+
 863  *
 864  * Routine Description:
 865  *
 866  *
 867  *  Second call back function to update Node DB info & AP link status
 868  *
 869  *
 870  * Return Value:
 871  *    none.
 872  *
 873 -*/
 874
 875 void BSSvSecondCallBack(void *hDeviceContext)
 876 {
 877     PSDevice        pDevice = (PSDevice)hDeviceContext;
 878     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
 879     unsigned int            ii;
 880     PWLAN_IE_SSID   pItemSSID, pCurrSSID;
 881     unsigned int            uSleepySTACnt = 0;
 882     unsigned int            uNonShortSlotSTACnt = 0;
 883     unsigned int            uLongPreambleSTACnt = 0;
 884     viawget_wpa_header *wpahdr;
 885
 886     spin_lock_irq(&pDevice->lock);
 887
 888     pDevice->uAssocCount = 0;
 889
 890     //Power Saving Mode Tx Burst
 891     if ( pDevice->bEnablePSMode == TRUE ) {
 892         pDevice->ulPSModeWaitTx++;
 893         if ( pDevice->ulPSModeWaitTx >= 2 ) {
 894             pDevice->ulPSModeWaitTx = 0;
 895             pDevice->bPSModeTxBurst = FALSE;
 896         }
 897     }
 898
 899     pDevice->byERPFlag &=
 900         ~(WLAN_SET_ERP_BARKER_MODE(1) | WLAN_SET_ERP_NONERP_PRESENT(1));
 901
 902     if (pDevice->wUseProtectCntDown > 0) {
 903         pDevice->wUseProtectCntDown --;
 904     }
 905     else {
 906         // disable protect mode
 907         pDevice->byERPFlag &= ~(WLAN_SET_ERP_USE_PROTECTION(1));
 908     }
 909
 910 if(pDevice->byReAssocCount > 0) {
 911        pDevice->byReAssocCount++;
 912    if((pDevice->byReAssocCount > 10) && (pDevice->bLinkPass != TRUE)) {  //10 sec timeout
 913                      printk("Re-association timeout!!!\n");
 914                    pDevice->byReAssocCount = 0;
 915                      #ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
 916                     // if(pDevice->bWPASuppWextEnabled == TRUE)
 917                         {
 918                         union iwreq_data  wrqu;
 919                         memset(&wrqu, 0, sizeof (wrqu));
 920                           wrqu.ap_addr.sa_family = ARPHRD_ETHER;
 921                         PRINT_K("wireless_send_event--->SIOCGIWAP(disassociated)\n");
 922                         wireless_send_event(pDevice->dev, SIOCGIWAP, &wrqu, NULL);
 923                        }
 924                     #endif
 925      }
 926    else if(pDevice->bLinkPass == TRUE)
 927         pDevice->byReAssocCount = 0;
 928 }
 929
 930 if((pMgmt->eCurrState!=WMAC_STATE_ASSOC) &&
 931      (pMgmt->eLastState==WMAC_STATE_ASSOC))
 932 {
 933   union iwreq_data      wrqu;
 934   memset(&wrqu, 0, sizeof(wrqu));
 935   wrqu.data.flags = RT_DISCONNECTED_EVENT_FLAG;
 936   wireless_send_event(pDevice->dev, IWEVCUSTOM, &wrqu, NULL);
 937 }
 938  pMgmt->eLastState = pMgmt->eCurrState ;
 939
 940    s_uCalculateLinkQual((void *)pDevice);
 941
 942     for (ii = 0; ii < (MAX_NODE_NUM + 1); ii++) {
 943
 944         if (pMgmt->sNodeDBTable[ii].bActive) {
 945             // Increase in-activity counter
 946             pMgmt->sNodeDBTable[ii].uInActiveCount++;
 947
 948             if (ii > 0) {
 949                 if (pMgmt->sNodeDBTable[ii].uInActiveCount > MAX_INACTIVE_COUNT) {
 950                     BSSvRemoveOneNode(pDevice, ii);
 951                     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 952                         "Inactive timeout [%d] sec, STA index = [%d] remove\n", MAX_INACTIVE_COUNT, ii);
 953                     continue;
 954                 }
 955
 956                 if (pMgmt->sNodeDBTable[ii].eNodeState >= NODE_ASSOC) {
 957
 958                     pDevice->uAssocCount++;
 959
 960                     // check if Non ERP exist
 961                     if (pMgmt->sNodeDBTable[ii].uInActiveCount < ERP_RECOVER_COUNT) {
 962                         if (!pMgmt->sNodeDBTable[ii].bShortPreamble) {
 963                             pDevice->byERPFlag |= WLAN_SET_ERP_BARKER_MODE(1);
 964                             uLongPreambleSTACnt ++;
 965                         }
 966                         if (!pMgmt->sNodeDBTable[ii].bERPExist) {
 967                             pDevice->byERPFlag |= WLAN_SET_ERP_NONERP_PRESENT(1);
 968                             pDevice->byERPFlag |= WLAN_SET_ERP_USE_PROTECTION(1);
 969                         }
 970                         if (!pMgmt->sNodeDBTable[ii].bShortSlotTime)
 971                             uNonShortSlotSTACnt++;
 972                     }
 973                 }
 974
 975                 // check if any STA in PS mode
 976                 if (pMgmt->sNodeDBTable[ii].bPSEnable)
 977                     uSleepySTACnt++;
 978
 979
 980             }
 981
 982             // Rate fallback check
 983             if (!pDevice->bFixRate) {
 984                 if (ii > 0) {
 985                     // ii = 0 for multicast node (AP & Adhoc)
 986                         RATEvTxRateFallBack((void *)pDevice,
 987                                             &(pMgmt->sNodeDBTable[ii]));
 988                 }
 989                 else {
 990                     // ii = 0 reserved for unicast AP node (Infra STA)
 991                         if (pMgmt->eCurrMode == WMAC_MODE_ESS_STA)
 992                                 RATEvTxRateFallBack((void *)pDevice,
 993                                                     &(pMgmt->sNodeDBTable[ii]));
 994                 }
 995
 996             }
 997
 998             // check if pending PS queue
 999             if (pMgmt->sNodeDBTable[ii].wEnQueueCnt != 0) {
1000                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Index= %d, Queue = %d pending \n",
1001                            ii, pMgmt->sNodeDBTable[ii].wEnQueueCnt);
1002                 if ((ii >0) && (pMgmt->sNodeDBTable[ii].wEnQueueCnt > 15)) {
1003                     BSSvRemoveOneNode(pDevice, ii);
1004                     DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "Pending many queues PS STA Index = %d remove \n", ii);
1005                     continue;
1006                 }
1007             }
1008         }
1009
1010     }
1011
1012
1013     if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && (pDevice->byBBType == BB_TYPE_11G)) {
1014
1015         // on/off protect mode
1016         if (WLAN_GET_ERP_USE_PROTECTION(pDevice->byERPFlag)) {
1017             if (!pDevice->bProtectMode) {
1018                 MACvEnableProtectMD(pDevice);
1019                 pDevice->bProtectMode = TRUE;
1020             }
1021         }
1022         else {
1023             if (pDevice->bProtectMode) {
1024                 MACvDisableProtectMD(pDevice);
1025                 pDevice->bProtectMode = FALSE;
1026             }
1027         }
1028         // on/off short slot time
1029
1030         if (uNonShortSlotSTACnt > 0) {
1031             if (pDevice->bShortSlotTime) {
1032                 pDevice->bShortSlotTime = FALSE;
1033                 BBvSetShortSlotTime(pDevice);
1034                 vUpdateIFS((void *)pDevice);
1035             }
1036         }
1037         else {
1038             if (!pDevice->bShortSlotTime) {
1039                 pDevice->bShortSlotTime = TRUE;
1040                 BBvSetShortSlotTime(pDevice);
1041                 vUpdateIFS((void *)pDevice);
1042             }
1043         }
1044
1045         // on/off barker long preamble mode
1046
1047         if (uLongPreambleSTACnt > 0) {
1048             if (!pDevice->bBarkerPreambleMd) {
1049                 MACvEnableBarkerPreambleMd(pDevice);
1050                 pDevice->bBarkerPreambleMd = TRUE;
1051             }
1052         }
1053         else {
1054             if (pDevice->bBarkerPreambleMd) {
1055                 MACvDisableBarkerPreambleMd(pDevice);
1056                 pDevice->bBarkerPreambleMd = FALSE;
1057             }
1058         }
1059
1060     }
1061
1062
1063     // Check if any STA in PS mode, enable DTIM multicast deliver
1064     if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
1065         if (uSleepySTACnt > 0)
1066             pMgmt->sNodeDBTable[0].bPSEnable = TRUE;
1067         else
1068             pMgmt->sNodeDBTable[0].bPSEnable = FALSE;
1069     }
1070
1071     pItemSSID = (PWLAN_IE_SSID)pMgmt->abyDesireSSID;
1072     pCurrSSID = (PWLAN_IE_SSID)pMgmt->abyCurrSSID;
1073
1074     if ((pMgmt->eCurrMode == WMAC_MODE_STANDBY) ||
1075         (pMgmt->eCurrMode == WMAC_MODE_ESS_STA)) {
1076
1077         if (pMgmt->sNodeDBTable[0].bActive) { // Assoc with BSS
1078
1079             if (pDevice->bUpdateBBVGA) {
1080                 /* s_vCheckSensitivity((void *) pDevice); */
1081                 s_vCheckPreEDThreshold((void *) pDevice);
1082             }
1083
1084             if ((pMgmt->sNodeDBTable[0].uInActiveCount >= (LOST_BEACON_COUNT/2)) &&
1085                 (pDevice->byBBVGACurrent != pDevice->abyBBVGA[0]) ) {
1086                 pDevice->byBBVGANew = pDevice->abyBBVGA[0];
1087                 bScheduleCommand((void *) pDevice,
1088                                  WLAN_CMD_CHANGE_BBSENSITIVITY,
1089                                  NULL);
1090             }
1091
1092                 if (pMgmt->sNodeDBTable[0].uInActiveCount >= LOST_BEACON_COUNT) {
1093                 pMgmt->sNodeDBTable[0].bActive = FALSE;
1094                 pMgmt->eCurrMode = WMAC_MODE_STANDBY;
1095                 pMgmt->eCurrState = WMAC_STATE_IDLE;
1096                 netif_stop_queue(pDevice->dev);
1097                 pDevice->bLinkPass = FALSE;
1098                 ControlvMaskByte(pDevice,MESSAGE_REQUEST_MACREG,MAC_REG_PAPEDELAY,LEDSTS_STS,LEDSTS_SLOW);
1099                 pDevice->bRoaming = TRUE;
1100                 pDevice->bIsRoaming = FALSE;
1101
1102                 DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "Lost AP beacon [%d] sec, disconnected !\n", pMgmt->sNodeDBTable[0].uInActiveCount);
1103                 /* let wpa supplicant know AP may disconnect */
1104         if ((pDevice->bWPADEVUp) && (pDevice->skb != NULL)) {
1105              wpahdr = (viawget_wpa_header *)pDevice->skb->data;
1106              wpahdr->type = VIAWGET_DISASSOC_MSG;
1107              wpahdr->resp_ie_len = 0;
1108              wpahdr->req_ie_len = 0;
1109              skb_put(pDevice->skb, sizeof(viawget_wpa_header));
1110              pDevice->skb->dev = pDevice->wpadev;
1111              skb_reset_mac_header(pDevice->skb);
1112              pDevice->skb->pkt_type = PACKET_HOST;
1113              pDevice->skb->protocol = htons(ETH_P_802_2);
1114              memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb));
1115              netif_rx(pDevice->skb);
1116              pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
1117          }
1118    #ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
1119       {
1120         union iwreq_data  wrqu;
1121         memset(&wrqu, 0, sizeof (wrqu));
1122         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1123         PRINT_K("wireless_send_event--->SIOCGIWAP(disassociated)\n");
1124         wireless_send_event(pDevice->dev, SIOCGIWAP, &wrqu, NULL);
1125      }
1126   #endif
1127             }
1128         }
1129         else if (pItemSSID->len != 0) {
1130 //Davidwang
1131       if ((pDevice->bEnableRoaming == TRUE)&&(!(pMgmt->Cisco_cckm))) {
1132 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "bRoaming %d, !\n", pDevice->bRoaming );
1133 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "bIsRoaming %d, !\n", pDevice->bIsRoaming );
1134           if ((pDevice->bRoaming == TRUE)&&(pDevice->bIsRoaming == TRUE)){
1135                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Fast   Roaming ...\n");
1136                 BSSvClearBSSList((void *) pDevice, pDevice->bLinkPass);
1137                 bScheduleCommand((void *) pDevice,
1138                                  WLAN_CMD_BSSID_SCAN,
1139                                  pMgmt->abyDesireSSID);
1140                 bScheduleCommand((void *) pDevice,
1141                                  WLAN_CMD_SSID,
1142                                  pMgmt->abyDesireSSID);
1143                 pDevice->uAutoReConnectTime = 0;
1144                 pDevice->uIsroamingTime = 0;
1145                 pDevice->bRoaming = FALSE;
1146
1147              wpahdr = (viawget_wpa_header *)pDevice->skb->data;
1148              wpahdr->type = VIAWGET_CCKM_ROAM_MSG;
1149              wpahdr->resp_ie_len = 0;
1150              wpahdr->req_ie_len = 0;
1151              skb_put(pDevice->skb, sizeof(viawget_wpa_header));
1152              pDevice->skb->dev = pDevice->wpadev;
1153              skb_reset_mac_header(pDevice->skb);
1154              pDevice->skb->pkt_type = PACKET_HOST;
1155              pDevice->skb->protocol = htons(ETH_P_802_2);
1156              memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb));
1157              netif_rx(pDevice->skb);
1158             pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
1159
1160           }
1161       else if ((pDevice->bRoaming == FALSE)&&(pDevice->bIsRoaming == TRUE)) {
1162                             pDevice->uIsroamingTime++;
1163        if (pDevice->uIsroamingTime >= 20)
1164             pDevice->bIsRoaming = FALSE;
1165          }
1166
1167    }
1168 else {
1169             if (pDevice->uAutoReConnectTime < 10) {
1170                 pDevice->uAutoReConnectTime++;
1171                #ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
1172                 //network manager support need not do Roaming scan???
1173                 if(pDevice->bWPASuppWextEnabled ==TRUE)
1174                  pDevice->uAutoReConnectTime = 0;
1175              #endif
1176             }
1177             else {
1178             //mike use old encryption status for wpa reauthen
1179               if(pDevice->bWPADEVUp)
1180                   pDevice->eEncryptionStatus = pDevice->eOldEncryptionStatus;
1181
1182                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Roaming ...\n");
1183                 BSSvClearBSSList((void *) pDevice, pDevice->bLinkPass);
1184                 pMgmt->eScanType = WMAC_SCAN_ACTIVE;
1185                 bScheduleCommand((void *) pDevice,
1186                                  WLAN_CMD_BSSID_SCAN,
1187                                  pMgmt->abyDesireSSID);
1188                 bScheduleCommand((void *) pDevice,
1189                                  WLAN_CMD_SSID,
1190                                  pMgmt->abyDesireSSID);
1191                 pDevice->uAutoReConnectTime = 0;
1192             }
1193         }
1194     }
1195     }
1196
1197     if (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA) {
1198         // if adhoc started which essid is NULL string, rescanning.
1199         if ((pMgmt->eCurrState == WMAC_STATE_STARTED) && (pCurrSSID->len == 0)) {
1200             if (pDevice->uAutoReConnectTime < 10) {
1201                 pDevice->uAutoReConnectTime++;
1202             }
1203             else {
1204                 DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "Adhoc re-scanning ...\n");
1205                pMgmt->eScanType = WMAC_SCAN_ACTIVE;
1206                 bScheduleCommand((void *) pDevice, WLAN_CMD_BSSID_SCAN, NULL);
1207                 bScheduleCommand((void *) pDevice, WLAN_CMD_SSID, NULL);
1208                 pDevice->uAutoReConnectTime = 0;
1209             };
1210         }
1211         if (pMgmt->eCurrState == WMAC_STATE_JOINTED) {
1212
1213                 if (pDevice->bUpdateBBVGA) {
1214                         /* s_vCheckSensitivity((void *) pDevice); */
1215                         s_vCheckPreEDThreshold((void *) pDevice);
1216                 }
1217                 if (pMgmt->sNodeDBTable[0].uInActiveCount >=ADHOC_LOST_BEACON_COUNT) {
1218                     DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "Lost other STA beacon [%d] sec, started !\n", pMgmt->sNodeDBTable[0].uInActiveCount);
1219                 pMgmt->sNodeDBTable[0].uInActiveCount = 0;
1220                 pMgmt->eCurrState = WMAC_STATE_STARTED;
1221                 netif_stop_queue(pDevice->dev);
1222                 pDevice->bLinkPass = FALSE;
1223                 ControlvMaskByte(pDevice,MESSAGE_REQUEST_MACREG,MAC_REG_PAPEDELAY,LEDSTS_STS,LEDSTS_SLOW);
1224             }
1225         }
1226     }
1227
1228     if (pDevice->bLinkPass == TRUE) {
1229         if (netif_queue_stopped(pDevice->dev))
1230             netif_wake_queue(pDevice->dev);
1231     }
1232
1233     spin_unlock_irq(&pDevice->lock);
1234
1235     pMgmt->sTimerSecondCallback.expires = RUN_AT(HZ);
1236     add_timer(&pMgmt->sTimerSecondCallback);
1237 }
1238
1239 /*+
1240  *
1241  * Routine Description:
1242  *
1243  *
1244  *  Update Tx attemps, Tx failure counter in Node DB
1245  *
1246  *
1247  * Return Value:
1248  *    none.
1249  *
1250 -*/
1251
1252 void BSSvUpdateNodeTxCounter(void *hDeviceContext,
1253                              PSStatCounter pStatistic,
1254                              BYTE byTSR,
1255                              BYTE byPktNO)
1256 {
1257     PSDevice        pDevice = (PSDevice)hDeviceContext;
1258     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
1259     unsigned int            uNodeIndex = 0;
1260     BYTE            byTxRetry;
1261     WORD            wRate;
1262     WORD            wFallBackRate = RATE_1M;
1263     BYTE            byFallBack;
1264     unsigned int            ii;
1265     PBYTE           pbyDestAddr;
1266     BYTE            byPktNum;
1267     WORD            wFIFOCtl;
1268
1269     byPktNum = (byPktNO & 0x0F) >> 4;
1270     byTxRetry = (byTSR & 0xF0) >> 4;
1271     wRate = (WORD) (byPktNO & 0xF0) >> 4;
1272     wFIFOCtl = pStatistic->abyTxPktInfo[byPktNum].wFIFOCtl;
1273     pbyDestAddr = (PBYTE) &( pStatistic->abyTxPktInfo[byPktNum].abyDestAddr[0]);
1274
1275     if (wFIFOCtl & FIFOCTL_AUTO_FB_0) {
1276         byFallBack = AUTO_FB_0;
1277     } else if (wFIFOCtl & FIFOCTL_AUTO_FB_1) {
1278         byFallBack = AUTO_FB_1;
1279     } else {
1280         byFallBack = AUTO_FB_NONE;
1281     }
1282
1283     // Only Unicast using support rates
1284     if (wFIFOCtl & FIFOCTL_NEEDACK) {
1285         if (pMgmt->eCurrMode == WMAC_MODE_ESS_STA) {
1286             pMgmt->sNodeDBTable[0].uTxAttempts += 1;
1287             if ( !(byTSR & (TSR_TMO | TSR_RETRYTMO))) {
1288                 // transmit success, TxAttempts at least plus one
1289                 pMgmt->sNodeDBTable[0].uTxOk[MAX_RATE]++;
1290                 if ( (byFallBack == AUTO_FB_NONE) ||
1291                      (wRate < RATE_18M) ) {
1292                     wFallBackRate = wRate;
1293                 } else if (byFallBack == AUTO_FB_0) {
1294                     if (byTxRetry < 5)
1295                         wFallBackRate = awHWRetry0[wRate-RATE_18M][byTxRetry];
1296                     else
1297                         wFallBackRate = awHWRetry0[wRate-RATE_18M][4];
1298                 } else if (byFallBack == AUTO_FB_1) {
1299                     if (byTxRetry < 5)
1300                         wFallBackRate = awHWRetry1[wRate-RATE_18M][byTxRetry];
1301                     else
1302                         wFallBackRate = awHWRetry1[wRate-RATE_18M][4];
1303                 }
1304                 pMgmt->sNodeDBTable[0].uTxOk[wFallBackRate]++;
1305             } else {
1306                 pMgmt->sNodeDBTable[0].uTxFailures ++;
1307             }
1308             pMgmt->sNodeDBTable[0].uTxRetry += byTxRetry;
1309             if (byTxRetry != 0) {
1310                 pMgmt->sNodeDBTable[0].uTxFail[MAX_RATE]+=byTxRetry;
1311                 if ( (byFallBack == AUTO_FB_NONE) ||
1312                      (wRate < RATE_18M) ) {
1313                     pMgmt->sNodeDBTable[0].uTxFail[wRate]+=byTxRetry;
1314                 } else if (byFallBack == AUTO_FB_0) {
1315                         for (ii = 0; ii < byTxRetry; ii++) {
1316                                 if (ii < 5)
1317                                         wFallBackRate =
1318                                                 awHWRetry0[wRate-RATE_18M][ii];
1319                                 else
1320                                         wFallBackRate =
1321                                                 awHWRetry0[wRate-RATE_18M][4];
1322                                 pMgmt->sNodeDBTable[0].uTxFail[wFallBackRate]++;
1323                         }
1324                 } else if (byFallBack == AUTO_FB_1) {
1325                         for (ii = 0; ii < byTxRetry; ii++) {
1326                                 if (ii < 5)
1327                                         wFallBackRate =
1328                                                 awHWRetry1[wRate-RATE_18M][ii];
1329                                 else
1330                                         wFallBackRate =
1331                                                 awHWRetry1[wRate-RATE_18M][4];
1332                                 pMgmt->sNodeDBTable[0].uTxFail[wFallBackRate]++;
1333                         }
1334                 }
1335             }
1336         }
1337
1338         if ((pMgmt->eCurrMode == WMAC_MODE_IBSS_STA) ||
1339             (pMgmt->eCurrMode == WMAC_MODE_ESS_AP)) {
1340
1341                 if (BSSbIsSTAInNodeDB((void *) pDevice,
1342                                       pbyDestAddr,
1343                                       &uNodeIndex)) {
1344                         pMgmt->sNodeDBTable[uNodeIndex].uTxAttempts += 1;
1345                 if ( !(byTSR & (TSR_TMO | TSR_RETRYTMO))) {
1346                     // transmit success, TxAttempts at least plus one
1347                     pMgmt->sNodeDBTable[uNodeIndex].uTxOk[MAX_RATE]++;
1348                     if ( (byFallBack == AUTO_FB_NONE) ||
1349                          (wRate < RATE_18M) ) {
1350                         wFallBackRate = wRate;
1351                     } else if (byFallBack == AUTO_FB_0) {
1352                         if (byTxRetry < 5)
1353                             wFallBackRate = awHWRetry0[wRate-RATE_18M][byTxRetry];
1354                         else
1355                             wFallBackRate = awHWRetry0[wRate-RATE_18M][4];
1356                     } else if (byFallBack == AUTO_FB_1) {
1357                         if (byTxRetry < 5)
1358                             wFallBackRate = awHWRetry1[wRate-RATE_18M][byTxRetry];
1359                         else
1360                             wFallBackRate = awHWRetry1[wRate-RATE_18M][4];
1361                     }
1362                     pMgmt->sNodeDBTable[uNodeIndex].uTxOk[wFallBackRate]++;
1363                 } else {
1364                     pMgmt->sNodeDBTable[uNodeIndex].uTxFailures ++;
1365                 }
1366                 pMgmt->sNodeDBTable[uNodeIndex].uTxRetry += byTxRetry;
1367                 if (byTxRetry != 0) {
1368                     pMgmt->sNodeDBTable[uNodeIndex].uTxFail[MAX_RATE]+=byTxRetry;
1369                     if ( (byFallBack == AUTO_FB_NONE) ||
1370                          (wRate < RATE_18M) ) {
1371                         pMgmt->sNodeDBTable[uNodeIndex].uTxFail[wRate]+=byTxRetry;
1372                     } else if (byFallBack == AUTO_FB_0) {
1373                         for (ii = 0; ii < byTxRetry; ii++) {
1374                                 if (ii < 5)
1375                                         wFallBackRate =
1376                                                 awHWRetry0[wRate-RATE_18M][ii];
1377                                 else
1378                                         wFallBackRate =
1379                                                 awHWRetry0[wRate-RATE_18M][4];
1380                                 pMgmt->sNodeDBTable[uNodeIndex].uTxFail[wFallBackRate]++;
1381                         }
1382                     } else if (byFallBack == AUTO_FB_1) {
1383                       for (ii = 0; ii < byTxRetry; ii++) {
1384                         if (ii < 5)
1385                                 wFallBackRate = awHWRetry1[wRate-RATE_18M][ii];
1386                         else
1387                                 wFallBackRate = awHWRetry1[wRate-RATE_18M][4];
1388                         pMgmt->sNodeDBTable[uNodeIndex].uTxFail[wFallBackRate]++;
1389                       }
1390                     }
1391                 }
1392             }
1393         }
1394     }
1395 }
1396
1397 /*+
1398  *
1399  * Routine Description:
1400  *    Clear Nodes & skb in DB Table
1401  *
1402  *
1403  * Parameters:
1404  *  In:
1405  *      hDeviceContext        - The adapter context.
1406  *      uStartIndex           - starting index
1407  *  Out:
1408  *      none
1409  *
1410  * Return Value:
1411  *    None.
1412  *
1413 -*/
1414
1415 void BSSvClearNodeDBTable(void *hDeviceContext,
1416                           unsigned int uStartIndex)
1417 {
1418     PSDevice     pDevice = (PSDevice)hDeviceContext;
1419     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
1420     struct sk_buff  *skb;
1421     unsigned int            ii;
1422
1423     for (ii = uStartIndex; ii < (MAX_NODE_NUM + 1); ii++) {
1424         if (pMgmt->sNodeDBTable[ii].bActive) {
1425             // check if sTxPSQueue has been initial
1426             if (pMgmt->sNodeDBTable[ii].sTxPSQueue.next != NULL) {
1427                 while ((skb = skb_dequeue(&pMgmt->sNodeDBTable[ii].sTxPSQueue)) != NULL){
1428                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PS skb != NULL %d\n", ii);
1429                         dev_kfree_skb(skb);
1430                 }
1431             }
1432             memset(&pMgmt->sNodeDBTable[ii], 0, sizeof(KnownNodeDB));
1433         }
1434     }
1435 };
1436
1437 void s_vCheckSensitivity(void *hDeviceContext)
1438 {
1439     PSDevice        pDevice = (PSDevice)hDeviceContext;
1440     PKnownBSS       pBSSList = NULL;
1441     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
1442     int             ii;
1443
1444     if ((pMgmt->eCurrState == WMAC_STATE_ASSOC) ||
1445         ((pMgmt->eCurrMode == WMAC_MODE_IBSS_STA) && (pMgmt->eCurrState == WMAC_STATE_JOINTED))) {
1446         pBSSList = BSSpAddrIsInBSSList(pDevice, pMgmt->abyCurrBSSID, (PWLAN_IE_SSID)pMgmt->abyCurrSSID);
1447         if (pBSSList != NULL) {
1448                 /* Update BB register if RSSI is too strong */
1449                 signed long    LocalldBmAverage = 0;
1450                 signed long    uNumofdBm = 0;
1451             for (ii = 0; ii < RSSI_STAT_COUNT; ii++) {
1452                 if (pBSSList->ldBmAverage[ii] != 0) {
1453                     uNumofdBm ++;
1454                     LocalldBmAverage += pBSSList->ldBmAverage[ii];
1455                 }
1456             }
1457             if (uNumofdBm > 0) {
1458                 LocalldBmAverage = LocalldBmAverage/uNumofdBm;
1459                 for (ii=0;ii<BB_VGA_LEVEL;ii++) {
1460                     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"LocalldBmAverage:%ld, %ld %02x\n", LocalldBmAverage, pDevice->ldBmThreshold[ii], pDevice->abyBBVGA[ii]);
1461                     if (LocalldBmAverage < pDevice->ldBmThreshold[ii]) {
1462                             pDevice->byBBVGANew = pDevice->abyBBVGA[ii];
1463                         break;
1464                     }
1465                 }
1466                 if (pDevice->byBBVGANew != pDevice->byBBVGACurrent) {
1467                     pDevice->uBBVGADiffCount++;
1468                     if (pDevice->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD)
1469                         bScheduleCommand((void *) pDevice,
1470                                          WLAN_CMD_CHANGE_BBSENSITIVITY,
1471                                          NULL);
1472                 } else {
1473                     pDevice->uBBVGADiffCount = 0;
1474                 }
1475             }
1476         }
1477     }
1478 }
1479
1480 void s_uCalculateLinkQual(void *hDeviceContext)
1481 {
1482    PSDevice        pDevice = (PSDevice)hDeviceContext;
1483    unsigned long TxOkRatio, TxCnt;
1484    unsigned long RxOkRatio, RxCnt;
1485    unsigned long RssiRatio;
1486    long ldBm;
1487
1488 TxCnt = pDevice->scStatistic.TxNoRetryOkCount +
1489               pDevice->scStatistic.TxRetryOkCount +
1490               pDevice->scStatistic.TxFailCount;
1491 RxCnt = pDevice->scStatistic.RxFcsErrCnt +
1492               pDevice->scStatistic.RxOkCnt;
1493 TxOkRatio = (TxCnt < 6) ? 4000:((pDevice->scStatistic.TxNoRetryOkCount * 4000) / TxCnt);
1494 RxOkRatio = (RxCnt < 6) ? 2000:((pDevice->scStatistic.RxOkCnt * 2000) / RxCnt);
1495 //decide link quality
1496 if(pDevice->bLinkPass !=TRUE)
1497 {
1498    pDevice->scStatistic.LinkQuality = 0;
1499    pDevice->scStatistic.SignalStren = 0;
1500 }
1501 else
1502 {
1503    RFvRSSITodBm(pDevice, (BYTE)(pDevice->uCurrRSSI), &ldBm);
1504    if(-ldBm < 50)  {
1505         RssiRatio = 4000;
1506      }
1507    else if(-ldBm > 90) {
1508         RssiRatio = 0;
1509      }
1510    else {
1511         RssiRatio = (40-(-ldBm-50))*4000/40;
1512      }
1513    pDevice->scStatistic.SignalStren = RssiRatio/40;
1514    pDevice->scStatistic.LinkQuality = (RssiRatio+TxOkRatio+RxOkRatio)/100;
1515 }
1516    pDevice->scStatistic.RxFcsErrCnt = 0;
1517    pDevice->scStatistic.RxOkCnt = 0;
1518    pDevice->scStatistic.TxFailCount = 0;
1519    pDevice->scStatistic.TxNoRetryOkCount = 0;
1520    pDevice->scStatistic.TxRetryOkCount = 0;
1521 }
1522
1523 void BSSvClearAnyBSSJoinRecord(void *hDeviceContext)
1524 {
1525     PSDevice        pDevice = (PSDevice)hDeviceContext;
1526     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
1527     unsigned int            ii;
1528
1529         for (ii = 0; ii < MAX_BSS_NUM; ii++)
1530         pMgmt->sBSSList[ii].bSelected = FALSE;
1531 }
1532
1533 void s_vCheckPreEDThreshold(void *hDeviceContext)
1534 {
1535     PSDevice        pDevice = (PSDevice)hDeviceContext;
1536     PKnownBSS       pBSSList = NULL;
1537     PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);
1538
1539     if ((pMgmt->eCurrState == WMAC_STATE_ASSOC) ||
1540         ((pMgmt->eCurrMode == WMAC_MODE_IBSS_STA) && (pMgmt->eCurrState == WMAC_STATE_JOINTED))) {
1541         pBSSList = BSSpAddrIsInBSSList(pDevice, pMgmt->abyCurrBSSID, (PWLAN_IE_SSID)pMgmt->abyCurrSSID);
1542         if (pBSSList != NULL) {
1543             pDevice->byBBPreEDRSSI = (BYTE) (~(pBSSList->ldBmAverRange) + 1);
1544             BBvUpdatePreEDThreshold(pDevice, FALSE);
1545         }
1546     }
1547 }
1548