Pileus Git - ~andy/linux/blob - 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 "tmacro.h"
  43 #include "tether.h"
  44 #include "device.h"
  45 #include "80211hdr.h"
  46 #include "bssdb.h"
  47 #include "wmgr.h"
  48 #include "datarate.h"
  49 #include "desc.h"
  50 #include "wcmd.h"
  51 #include "wpa.h"
  52 #include "baseband.h"
  53 #include "rf.h"
  54 #include "card.h"
  55 #include "mac.h"
  56 #include "wpa2.h"
  57 #include "control.h"
  58 #include "rndis.h"
  59 #include "iowpa.h"
  60 #include "power.h"
  61
  62 static int          msglevel                =MSG_LEVEL_INFO;
  63 //static int          msglevel                =MSG_LEVEL_DEBUG;
  64
  65 const u16             awHWRetry0[5][5] = {
  66                                             {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
  67                                             {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
  68                                             {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
  69                                             {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
  70                                             {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
  71                                            };
  72 const u16             awHWRetry1[5][5] = {
  73                                             {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
  74                                             {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
  75                                             {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
  76                                             {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
  77                                             {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
  78                                            };
  79
  80 static void s_vCheckSensitivity(struct vnt_private *pDevice);
  81 static void s_vCheckPreEDThreshold(struct vnt_private *pDevice);
  82 static void s_uCalculateLinkQual(struct vnt_private *pDevice);
  83
  84 /*+
  85  *
  86  * Routine Description:
  87  *    Search known BSS list for Desire SSID or BSSID.
  88  *
  89  * Return Value:
  90  *    PTR to KnownBSS or NULL
  91  *
  92 -*/
  93
  94 PKnownBSS BSSpSearchBSSList(struct vnt_private *pDevice,
  95                 u8 *pbyDesireBSSID, u8 *pbyDesireSSID,
  96                 CARD_PHY_TYPE ePhyType)
  97 {
  98         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
  99         u8 *pbyBSSID = NULL;
 100         PWLAN_IE_SSID pSSID = NULL;
 101         PKnownBSS pCurrBSS = NULL;
 102         PKnownBSS pSelect = NULL;
 103         u8 ZeroBSSID[WLAN_BSSID_LEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
 104         int ii = 0;
 105         int jj = 0;
 106
 107     if (pbyDesireBSSID != NULL) {
 108                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 109                         "BSSpSearchBSSList BSSID[%pM]\n", pbyDesireBSSID);
 110         if ((!is_broadcast_ether_addr(pbyDesireBSSID)) &&
 111              (memcmp(pbyDesireBSSID, ZeroBSSID, 6)!= 0)){
 112             pbyBSSID = pbyDesireBSSID;
 113         }
 114     }
 115     if (pbyDesireSSID != NULL) {
 116         if (((PWLAN_IE_SSID)pbyDesireSSID)->len != 0) {
 117             pSSID = (PWLAN_IE_SSID) pbyDesireSSID;
 118         }
 119     }
 120
 121     if ((pbyBSSID != NULL)&&(pDevice->bRoaming == false)) {
 122         // match BSSID first
 123         for (ii = 0; ii <MAX_BSS_NUM; ii++) {
 124             pCurrBSS = &(pMgmt->sBSSList[ii]);
 125
 126            pCurrBSS->bSelected = false;
 127
 128             if ((pCurrBSS->bActive) &&
 129                 (pCurrBSS->bSelected == false)) {
 130                     if (ether_addr_equal(pCurrBSS->abyBSSID, pbyBSSID)) {
 131                     if (pSSID != NULL) {
 132                         // compare ssid
 133                         if ( !memcmp(pSSID->abySSID,
 134                             ((PWLAN_IE_SSID)pCurrBSS->abySSID)->abySSID,
 135                             pSSID->len)) {
 136                             if ((pMgmt->eConfigMode == WMAC_CONFIG_AUTO) ||
 137                                 ((pMgmt->eConfigMode == WMAC_CONFIG_IBSS_STA) && WLAN_GET_CAP_INFO_IBSS(pCurrBSS->wCapInfo)) ||
 138                                 ((pMgmt->eConfigMode == WMAC_CONFIG_ESS_STA) && WLAN_GET_CAP_INFO_ESS(pCurrBSS->wCapInfo))
 139                                 ) {
 140                                 pCurrBSS->bSelected = true;
 141                                 return(pCurrBSS);
 142                             }
 143                         }
 144                     } else {
 145                         if ((pMgmt->eConfigMode == WMAC_CONFIG_AUTO) ||
 146                             ((pMgmt->eConfigMode == WMAC_CONFIG_IBSS_STA) && WLAN_GET_CAP_INFO_IBSS(pCurrBSS->wCapInfo)) ||
 147                             ((pMgmt->eConfigMode == WMAC_CONFIG_ESS_STA) && WLAN_GET_CAP_INFO_ESS(pCurrBSS->wCapInfo))
 148                             ) {
 149                             pCurrBSS->bSelected = true;
 150                             return(pCurrBSS);
 151                         }
 152                     }
 153                 }
 154             }
 155         }
 156     } else {
 157         // ignore BSSID
 158         for (ii = 0; ii <MAX_BSS_NUM; ii++) {
 159             pCurrBSS = &(pMgmt->sBSSList[ii]);
 160
 161            //2007-0721-01<Mark>by MikeLiu
 162          //   if ((pCurrBSS->bActive) &&
 163          //       (pCurrBSS->bSelected == false)) {
 164
 165           pCurrBSS->bSelected = false;
 166           if (pCurrBSS->bActive) {
 167
 168                 if (pSSID != NULL) {
 169                     // matched SSID
 170                     if (memcmp(pSSID->abySSID,
 171                         ((PWLAN_IE_SSID)pCurrBSS->abySSID)->abySSID,
 172                         pSSID->len) ||
 173                         (pSSID->len != ((PWLAN_IE_SSID)pCurrBSS->abySSID)->len)) {
 174                         // SSID not match skip this BSS
 175                         continue;
 176                       }
 177                 }
 178                 if (((pMgmt->eConfigMode == WMAC_CONFIG_IBSS_STA) && WLAN_GET_CAP_INFO_ESS(pCurrBSS->wCapInfo)) ||
 179                     ((pMgmt->eConfigMode == WMAC_CONFIG_ESS_STA) && WLAN_GET_CAP_INFO_IBSS(pCurrBSS->wCapInfo))
 180                     ){
 181                     // Type not match skip this BSS
 182                     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"BSS type mismatch.... Config[%d] BSS[0x%04x]\n", pMgmt->eConfigMode, pCurrBSS->wCapInfo);
 183                     continue;
 184                 }
 185
 186                 if (ePhyType != PHY_TYPE_AUTO) {
 187                     if (((ePhyType == PHY_TYPE_11A) && (PHY_TYPE_11A != pCurrBSS->eNetworkTypeInUse)) ||
 188                         ((ePhyType != PHY_TYPE_11A) && (PHY_TYPE_11A == pCurrBSS->eNetworkTypeInUse))) {
 189                         // PhyType not match skip this BSS
 190                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Physical type mismatch.... ePhyType[%d] BSS[%d]\n", ePhyType, pCurrBSS->eNetworkTypeInUse);
 191                         continue;
 192                     }
 193                 }
 194
 195         pMgmt->pSameBSS[jj].uChannel = pCurrBSS->uChannel;
 196                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 197                         "BSSpSearchBSSList pSelect1[%pM]\n",
 198                         pCurrBSS->abyBSSID);
 199         jj++;
 200
 201                 if (pSelect == NULL) {
 202                     pSelect = pCurrBSS;
 203                 } else {
 204                     // compare RSSI, select the strongest signal
 205                     if (pCurrBSS->uRSSI < pSelect->uRSSI) {
 206                         pSelect = pCurrBSS;
 207                     }
 208                 }
 209             }
 210         }
 211
 212 pDevice->bSameBSSMaxNum = jj;
 213
 214         if (pSelect != NULL) {
 215             pSelect->bSelected = true;
 216                         if (pDevice->bRoaming == false)  {
 217         //       Einsn Add @20070907
 218                         memcpy(pbyDesireSSID,pCurrBSS->abySSID,WLAN_IEHDR_LEN + WLAN_SSID_MAXLEN + 1) ;
 219                                                 }
 220
 221             return(pSelect);
 222         }
 223     }
 224     return(NULL);
 225
 226 }
 227
 228 /*+
 229  *
 230  * Routine Description:
 231  *    Clear BSS List
 232  *
 233  * Return Value:
 234  *    None.
 235  *
 236 -*/
 237
 238 void BSSvClearBSSList(struct vnt_private *pDevice, int bKeepCurrBSSID)
 239 {
 240         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 241         int ii;
 242
 243     for (ii = 0; ii < MAX_BSS_NUM; ii++) {
 244         if (bKeepCurrBSSID) {
 245             if (pMgmt->sBSSList[ii].bActive &&
 246                 ether_addr_equal(pMgmt->sBSSList[ii].abyBSSID,
 247                                  pMgmt->abyCurrBSSID)) {
 248  //mike mark: there are two BSSID's in list. If that AP is in hidden ssid mode, one SSID is null,
 249  //                 but other's might not be obvious, so if it associate's with your STA,
 250  //                 you must keep the two of them!!
 251                // bKeepCurrBSSID = false;
 252                 continue;
 253             }
 254         }
 255
 256         pMgmt->sBSSList[ii].bActive = false;
 257         memset(&pMgmt->sBSSList[ii], 0, sizeof(KnownBSS));
 258     }
 259     BSSvClearAnyBSSJoinRecord(pDevice);
 260 }
 261
 262 /*+
 263  *
 264  * Routine Description:
 265  *    search BSS list by BSSID & SSID if matched
 266  *
 267  * Return Value:
 268  *    true if found.
 269  *
 270 -*/
 271 PKnownBSS BSSpAddrIsInBSSList(struct vnt_private *pDevice,
 272         u8 *abyBSSID, PWLAN_IE_SSID pSSID)
 273 {
 274         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 275         PKnownBSS pBSSList = NULL;
 276         int ii;
 277
 278     for (ii = 0; ii < MAX_BSS_NUM; ii++) {
 279         pBSSList = &(pMgmt->sBSSList[ii]);
 280         if (pBSSList->bActive) {
 281                 if (ether_addr_equal(pBSSList->abyBSSID, abyBSSID)) {
 282                 if (pSSID->len == ((PWLAN_IE_SSID)pBSSList->abySSID)->len){
 283                     if (memcmp(pSSID->abySSID,
 284                             ((PWLAN_IE_SSID)pBSSList->abySSID)->abySSID,
 285                             pSSID->len) == 0)
 286                         return pBSSList;
 287                 }
 288             }
 289         }
 290     }
 291
 292     return NULL;
 293 };
 294
 295 /*+
 296  *
 297  * Routine Description:
 298  *    Insert a BSS set into known BSS list
 299  *
 300  * Return Value:
 301  *    true if success.
 302  *
 303 -*/
 304
 305 int BSSbInsertToBSSList(struct vnt_private *pDevice,
 306                         u8 *abyBSSIDAddr,
 307                         u64 qwTimestamp,
 308                         u16 wBeaconInterval,
 309                         u16 wCapInfo,
 310                         u8 byCurrChannel,
 311                         PWLAN_IE_SSID pSSID,
 312                         PWLAN_IE_SUPP_RATES pSuppRates,
 313                         PWLAN_IE_SUPP_RATES pExtSuppRates,
 314                         PERPObject psERP,
 315                         PWLAN_IE_RSN pRSN,
 316                         PWLAN_IE_RSN_EXT pRSNWPA,
 317                         PWLAN_IE_COUNTRY pIE_Country,
 318                         PWLAN_IE_QUIET pIE_Quiet,
 319                         u32 uIELength,
 320                         u8 *pbyIEs,
 321                         void *pRxPacketContext)
 322 {
 323         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 324         struct vnt_rx_mgmt *pRxPacket =
 325                 (struct vnt_rx_mgmt *)pRxPacketContext;
 326         PKnownBSS pBSSList = NULL;
 327         unsigned int ii;
 328         bool bParsingQuiet = false;
 329
 330     pBSSList = (PKnownBSS)&(pMgmt->sBSSList[0]);
 331
 332     for (ii = 0; ii < MAX_BSS_NUM; ii++) {
 333         pBSSList = (PKnownBSS)&(pMgmt->sBSSList[ii]);
 334         if (!pBSSList->bActive)
 335                 break;
 336     }
 337
 338     if (ii == MAX_BSS_NUM){
 339         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Get free KnowBSS node failed.\n");
 340         return false;
 341     }
 342     // save the BSS info
 343     pBSSList->bActive = true;
 344     memcpy( pBSSList->abyBSSID, abyBSSIDAddr, WLAN_BSSID_LEN);
 345         pBSSList->qwBSSTimestamp = cpu_to_le64(qwTimestamp);
 346     pBSSList->wBeaconInterval = cpu_to_le16(wBeaconInterval);
 347     pBSSList->wCapInfo = cpu_to_le16(wCapInfo);
 348     pBSSList->uClearCount = 0;
 349
 350     if (pSSID->len > WLAN_SSID_MAXLEN)
 351         pSSID->len = WLAN_SSID_MAXLEN;
 352     memcpy( pBSSList->abySSID, pSSID, pSSID->len + WLAN_IEHDR_LEN);
 353
 354     pBSSList->uChannel = byCurrChannel;
 355
 356     if (pSuppRates->len > WLAN_RATES_MAXLEN)
 357         pSuppRates->len = WLAN_RATES_MAXLEN;
 358     memcpy( pBSSList->abySuppRates, pSuppRates, pSuppRates->len + WLAN_IEHDR_LEN);
 359
 360     if (pExtSuppRates != NULL) {
 361         if (pExtSuppRates->len > WLAN_RATES_MAXLEN)
 362             pExtSuppRates->len = WLAN_RATES_MAXLEN;
 363         memcpy(pBSSList->abyExtSuppRates, pExtSuppRates, pExtSuppRates->len + WLAN_IEHDR_LEN);
 364         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"BSSbInsertToBSSList: pExtSuppRates->len = %d\n", pExtSuppRates->len);
 365
 366     } else {
 367         memset(pBSSList->abyExtSuppRates, 0, WLAN_IEHDR_LEN + WLAN_RATES_MAXLEN + 1);
 368     }
 369     pBSSList->sERP.byERP = psERP->byERP;
 370     pBSSList->sERP.bERPExist = psERP->bERPExist;
 371
 372     // Check if BSS is 802.11a/b/g
 373     if (pBSSList->uChannel > CB_MAX_CHANNEL_24G) {
 374         pBSSList->eNetworkTypeInUse = PHY_TYPE_11A;
 375     } else {
 376         if (pBSSList->sERP.bERPExist == true) {
 377             pBSSList->eNetworkTypeInUse = PHY_TYPE_11G;
 378         } else {
 379             pBSSList->eNetworkTypeInUse = PHY_TYPE_11B;
 380         }
 381     }
 382
 383     pBSSList->byRxRate = pRxPacket->byRxRate;
 384     pBSSList->qwLocalTSF = pRxPacket->qwLocalTSF;
 385     pBSSList->uRSSI = pRxPacket->uRSSI;
 386     pBSSList->bySQ = pRxPacket->bySQ;
 387
 388    if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 389         (pMgmt->eCurrState == WMAC_STATE_ASSOC)) {
 390         // assoc with BSS
 391         if (pBSSList == pMgmt->pCurrBSS) {
 392             bParsingQuiet = true;
 393         }
 394     }
 395
 396     WPA_ClearRSN(pBSSList);
 397
 398     if (pRSNWPA != NULL) {
 399         unsigned int uLen = pRSNWPA->len + 2;
 400
 401         if (uLen <= (uIELength -
 402                      (unsigned int) (u32) ((u8 *) pRSNWPA - pbyIEs))) {
 403                 pBSSList->wWPALen = uLen;
 404                 memcpy(pBSSList->byWPAIE, pRSNWPA, uLen);
 405                 WPA_ParseRSN(pBSSList, pRSNWPA);
 406         }
 407     }
 408
 409     WPA2_ClearRSN(pBSSList);
 410
 411     if (pRSN != NULL) {
 412         unsigned int uLen = pRSN->len + 2;
 413
 414         if (uLen <= (uIELength -
 415                      (unsigned int) (u32) ((u8 *) pRSN - pbyIEs))) {
 416                 pBSSList->wRSNLen = uLen;
 417                 memcpy(pBSSList->byRSNIE, pRSN, uLen);
 418                 WPA2vParseRSN(pBSSList, pRSN);
 419         }
 420     }
 421
 422     if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA2) || (pBSSList->bWPA2Valid == true)) {
 423
 424         PSKeyItem  pTransmitKey = NULL;
 425         bool       bIs802_1x = false;
 426
 427         for (ii = 0; ii < pBSSList->wAKMSSAuthCount; ii ++) {
 428             if (pBSSList->abyAKMSSAuthType[ii] == WLAN_11i_AKMSS_802_1X) {
 429                 bIs802_1x = true;
 430                 break;
 431             }
 432         }
 433         if ((bIs802_1x == true) && (pSSID->len == ((PWLAN_IE_SSID)pMgmt->abyDesireSSID)->len) &&
 434             ( !memcmp(pSSID->abySSID, ((PWLAN_IE_SSID)pMgmt->abyDesireSSID)->abySSID, pSSID->len))) {
 435
 436                 bAdd_PMKID_Candidate((void *) pDevice,
 437                                      pBSSList->abyBSSID,
 438                                      &pBSSList->sRSNCapObj);
 439
 440             if ((pDevice->bLinkPass == true) && (pMgmt->eCurrState == WMAC_STATE_ASSOC)) {
 441                 if ((KeybGetTransmitKey(&(pDevice->sKey), pDevice->abyBSSID, PAIRWISE_KEY, &pTransmitKey) == true) ||
 442                     (KeybGetTransmitKey(&(pDevice->sKey), pDevice->abyBSSID, GROUP_KEY, &pTransmitKey) == true)) {
 443                     pDevice->gsPMKIDCandidate.StatusType = Ndis802_11StatusType_PMKID_CandidateList;
 444                     pDevice->gsPMKIDCandidate.Version = 1;
 445
 446                 }
 447
 448             }
 449         }
 450     }
 451
 452     if (pDevice->bUpdateBBVGA) {
 453         // Monitor if RSSI is too strong.
 454         pBSSList->byRSSIStatCnt = 0;
 455         RFvRSSITodBm(pDevice, (u8)(pRxPacket->uRSSI), &pBSSList->ldBmMAX);
 456         pBSSList->ldBmAverage[0] = pBSSList->ldBmMAX;
 457         pBSSList->ldBmAverRange = pBSSList->ldBmMAX;
 458         for (ii = 1; ii < RSSI_STAT_COUNT; ii++)
 459             pBSSList->ldBmAverage[ii] = 0;
 460     }
 461
 462     pBSSList->uIELength = uIELength;
 463     if (pBSSList->uIELength > WLAN_BEACON_FR_MAXLEN)
 464         pBSSList->uIELength = WLAN_BEACON_FR_MAXLEN;
 465     memcpy(pBSSList->abyIEs, pbyIEs, pBSSList->uIELength);
 466
 467     return true;
 468 }
 469
 470 /*+
 471  *
 472  * Routine Description:
 473  *    Update BSS set in known BSS list
 474  *
 475  * Return Value:
 476  *    true if success.
 477  *
 478 -*/
 479 // TODO: input structure modify
 480
 481 int BSSbUpdateToBSSList(struct vnt_private *pDevice,
 482                         u64 qwTimestamp,
 483                         u16 wBeaconInterval,
 484                         u16 wCapInfo,
 485                         u8 byCurrChannel,
 486                         int bChannelHit,
 487                         PWLAN_IE_SSID pSSID,
 488                         PWLAN_IE_SUPP_RATES pSuppRates,
 489                         PWLAN_IE_SUPP_RATES pExtSuppRates,
 490                         PERPObject psERP,
 491                         PWLAN_IE_RSN pRSN,
 492                         PWLAN_IE_RSN_EXT pRSNWPA,
 493                         PWLAN_IE_COUNTRY pIE_Country,
 494                         PWLAN_IE_QUIET pIE_Quiet,
 495                         PKnownBSS pBSSList,
 496                         u32 uIELength,
 497                         u8 *pbyIEs,
 498                         void *pRxPacketContext)
 499 {
 500         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 501         struct vnt_rx_mgmt *pRxPacket =
 502                 (struct vnt_rx_mgmt *)pRxPacketContext;
 503         int ii, jj;
 504         signed long ldBm, ldBmSum;
 505         bool bParsingQuiet = false;
 506
 507     if (pBSSList == NULL)
 508         return false;
 509
 510         pBSSList->qwBSSTimestamp = cpu_to_le64(qwTimestamp);
 511
 512     pBSSList->wBeaconInterval = cpu_to_le16(wBeaconInterval);
 513     pBSSList->wCapInfo = cpu_to_le16(wCapInfo);
 514     pBSSList->uClearCount = 0;
 515     pBSSList->uChannel = byCurrChannel;
 516
 517     if (pSSID->len > WLAN_SSID_MAXLEN)
 518         pSSID->len = WLAN_SSID_MAXLEN;
 519
 520     if ((pSSID->len != 0) && (pSSID->abySSID[0] != 0))
 521         memcpy(pBSSList->abySSID, pSSID, pSSID->len + WLAN_IEHDR_LEN);
 522     memcpy(pBSSList->abySuppRates, pSuppRates,pSuppRates->len + WLAN_IEHDR_LEN);
 523
 524     if (pExtSuppRates != NULL) {
 525         memcpy(pBSSList->abyExtSuppRates, pExtSuppRates,pExtSuppRates->len + WLAN_IEHDR_LEN);
 526     } else {
 527         memset(pBSSList->abyExtSuppRates, 0, WLAN_IEHDR_LEN + WLAN_RATES_MAXLEN + 1);
 528     }
 529     pBSSList->sERP.byERP = psERP->byERP;
 530     pBSSList->sERP.bERPExist = psERP->bERPExist;
 531
 532     // Check if BSS is 802.11a/b/g
 533     if (pBSSList->uChannel > CB_MAX_CHANNEL_24G) {
 534         pBSSList->eNetworkTypeInUse = PHY_TYPE_11A;
 535     } else {
 536         if (pBSSList->sERP.bERPExist == true) {
 537             pBSSList->eNetworkTypeInUse = PHY_TYPE_11G;
 538         } else {
 539             pBSSList->eNetworkTypeInUse = PHY_TYPE_11B;
 540         }
 541     }
 542
 543     pBSSList->byRxRate = pRxPacket->byRxRate;
 544     pBSSList->qwLocalTSF = pRxPacket->qwLocalTSF;
 545     if(bChannelHit)
 546         pBSSList->uRSSI = pRxPacket->uRSSI;
 547     pBSSList->bySQ = pRxPacket->bySQ;
 548
 549    if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
 550         (pMgmt->eCurrState == WMAC_STATE_ASSOC)) {
 551         // assoc with BSS
 552         if (pBSSList == pMgmt->pCurrBSS) {
 553             bParsingQuiet = true;
 554         }
 555     }
 556
 557    WPA_ClearRSN(pBSSList);         //mike update
 558
 559    if (pRSNWPA != NULL) {
 560         unsigned int uLen = pRSNWPA->len + 2;
 561         if (uLen <= (uIELength -
 562                      (unsigned int) (u32) ((u8 *) pRSNWPA - pbyIEs))) {
 563                 pBSSList->wWPALen = uLen;
 564                 memcpy(pBSSList->byWPAIE, pRSNWPA, uLen);
 565                 WPA_ParseRSN(pBSSList, pRSNWPA);
 566         }
 567    }
 568
 569    WPA2_ClearRSN(pBSSList);  //mike update
 570
 571     if (pRSN != NULL) {
 572         unsigned int uLen = pRSN->len + 2;
 573         if (uLen <= (uIELength -
 574                         (unsigned int) (u32) ((u8 *) pRSN - pbyIEs))) {
 575                 pBSSList->wRSNLen = uLen;
 576                 memcpy(pBSSList->byRSNIE, pRSN, uLen);
 577                 WPA2vParseRSN(pBSSList, pRSN);
 578         }
 579     }
 580
 581     if (pRxPacket->uRSSI != 0) {
 582         RFvRSSITodBm(pDevice, (u8)(pRxPacket->uRSSI), &ldBm);
 583         // Monitor if RSSI is too strong.
 584         pBSSList->byRSSIStatCnt++;
 585         pBSSList->byRSSIStatCnt %= RSSI_STAT_COUNT;
 586         pBSSList->ldBmAverage[pBSSList->byRSSIStatCnt] = ldBm;
 587         ldBmSum = 0;
 588         for (ii = 0, jj = 0; ii < RSSI_STAT_COUNT; ii++) {
 589                 if (pBSSList->ldBmAverage[ii] != 0) {
 590                         pBSSList->ldBmMAX =
 591                                 max(pBSSList->ldBmAverage[ii], ldBm);
 592                         ldBmSum +=
 593                                 pBSSList->ldBmAverage[ii];
 594                         jj++;
 595                 }
 596         }
 597         pBSSList->ldBmAverRange = ldBmSum /jj;
 598     }
 599
 600     pBSSList->uIELength = uIELength;
 601     if (pBSSList->uIELength > WLAN_BEACON_FR_MAXLEN)
 602         pBSSList->uIELength = WLAN_BEACON_FR_MAXLEN;
 603     memcpy(pBSSList->abyIEs, pbyIEs, pBSSList->uIELength);
 604
 605     return true;
 606 }
 607
 608 /*+
 609  *
 610  * Routine Description:
 611  *    Search Node DB table to find the index of matched DstAddr
 612  *
 613  * Return Value:
 614  *    None
 615  *
 616 -*/
 617
 618 int BSSbIsSTAInNodeDB(struct vnt_private *pDevice,
 619                 u8 *abyDstAddr, u32 *puNodeIndex)
 620 {
 621         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 622         unsigned int ii;
 623
 624     // Index = 0 reserved for AP Node
 625     for (ii = 1; ii < (MAX_NODE_NUM + 1); ii++) {
 626         if (pMgmt->sNodeDBTable[ii].bActive) {
 627                 if (ether_addr_equal(abyDstAddr,
 628                                      pMgmt->sNodeDBTable[ii].abyMACAddr)) {
 629                 *puNodeIndex = ii;
 630                 return true;
 631             }
 632         }
 633     }
 634
 635    return false;
 636 };
 637
 638 /*+
 639  *
 640  * Routine Description:
 641  *    Find an empty node and allocate it; if no empty node
 642  *    is found, then use the most inactive one.
 643  *
 644  * Return Value:
 645  *    None
 646  *
 647 -*/
 648 void BSSvCreateOneNode(struct vnt_private *pDevice, u32 *puNodeIndex)
 649 {
 650         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 651         int            ii;
 652         u32 BigestCount = 0;
 653         u32 SelectIndex;
 654         struct sk_buff  *skb;
 655
 656     // Index = 0 reserved for AP Node (In STA mode)
 657     // Index = 0 reserved for Broadcast/MultiCast (In AP mode)
 658     SelectIndex = 1;
 659     for (ii = 1; ii < (MAX_NODE_NUM + 1); ii++) {
 660         if (pMgmt->sNodeDBTable[ii].bActive) {
 661             if (pMgmt->sNodeDBTable[ii].uInActiveCount > BigestCount) {
 662                 BigestCount = pMgmt->sNodeDBTable[ii].uInActiveCount;
 663                 SelectIndex = ii;
 664             }
 665         }
 666         else {
 667             break;
 668         }
 669     }
 670
 671     // if not found replace uInActiveCount with the largest one.
 672     if ( ii == (MAX_NODE_NUM + 1)) {
 673         *puNodeIndex = SelectIndex;
 674         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Replace inactive node = %d\n", SelectIndex);
 675         // clear ps buffer
 676         if (pMgmt->sNodeDBTable[*puNodeIndex].sTxPSQueue.next != NULL) {
 677             while ((skb = skb_dequeue(&pMgmt->sNodeDBTable[*puNodeIndex].sTxPSQueue)) != NULL)
 678             dev_kfree_skb(skb);
 679         }
 680     }
 681     else {
 682         *puNodeIndex = ii;
 683     }
 684
 685     memset(&pMgmt->sNodeDBTable[*puNodeIndex], 0, sizeof(KnownNodeDB));
 686     pMgmt->sNodeDBTable[*puNodeIndex].bActive = true;
 687     pMgmt->sNodeDBTable[*puNodeIndex].uRatePollTimeout = FALLBACK_POLL_SECOND;
 688     // for AP mode PS queue
 689     skb_queue_head_init(&pMgmt->sNodeDBTable[*puNodeIndex].sTxPSQueue);
 690     pMgmt->sNodeDBTable[*puNodeIndex].byAuthSequence = 0;
 691     pMgmt->sNodeDBTable[*puNodeIndex].wEnQueueCnt = 0;
 692     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Create node index = %d\n", ii);
 693 };
 694
 695 /*+
 696  *
 697  * Routine Description:
 698  *    Remove Node by NodeIndex
 699  *
 700  *
 701  * Return Value:
 702  *    None
 703  *
 704 -*/
 705
 706 void BSSvRemoveOneNode(struct vnt_private *pDevice, u32 uNodeIndex)
 707 {
 708         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 709         u8 byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
 710         struct sk_buff  *skb;
 711
 712     while ((skb = skb_dequeue(&pMgmt->sNodeDBTable[uNodeIndex].sTxPSQueue)) != NULL)
 713             dev_kfree_skb(skb);
 714     // clear context
 715     memset(&pMgmt->sNodeDBTable[uNodeIndex], 0, sizeof(KnownNodeDB));
 716     // clear tx bit map
 717     pMgmt->abyPSTxMap[pMgmt->sNodeDBTable[uNodeIndex].wAID >> 3] &=  ~byMask[pMgmt->sNodeDBTable[uNodeIndex].wAID & 7];
 718 };
 719 /*+
 720  *
 721  * Routine Description:
 722  *    Update AP Node content in Index 0 of KnownNodeDB
 723  *
 724  *
 725  * Return Value:
 726  *    None
 727  *
 728 -*/
 729
 730 void BSSvUpdateAPNode(struct vnt_private *pDevice, u16 *pwCapInfo,
 731         PWLAN_IE_SUPP_RATES pSuppRates, PWLAN_IE_SUPP_RATES pExtSuppRates)
 732 {
 733         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 734         u32 uRateLen = WLAN_RATES_MAXLEN;
 735
 736     memset(&pMgmt->sNodeDBTable[0], 0, sizeof(KnownNodeDB));
 737
 738     pMgmt->sNodeDBTable[0].bActive = true;
 739     if (pDevice->byBBType == BB_TYPE_11B) {
 740         uRateLen = WLAN_RATES_MAXLEN_11B;
 741     }
 742     pMgmt->abyCurrSuppRates[1] = RATEuSetIE((PWLAN_IE_SUPP_RATES)pSuppRates,
 743                                             (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrSuppRates,
 744                                             uRateLen);
 745     pMgmt->abyCurrExtSuppRates[1] = RATEuSetIE((PWLAN_IE_SUPP_RATES)pExtSuppRates,
 746                                             (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrExtSuppRates,
 747                                             uRateLen);
 748     RATEvParseMaxRate((void *) pDevice,
 749                        (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrSuppRates,
 750                        (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrExtSuppRates,
 751                        true,
 752                        &(pMgmt->sNodeDBTable[0].wMaxBasicRate),
 753                        &(pMgmt->sNodeDBTable[0].wMaxSuppRate),
 754                        &(pMgmt->sNodeDBTable[0].wSuppRate),
 755                        &(pMgmt->sNodeDBTable[0].byTopCCKBasicRate),
 756                        &(pMgmt->sNodeDBTable[0].byTopOFDMBasicRate)
 757                       );
 758     memcpy(pMgmt->sNodeDBTable[0].abyMACAddr, pMgmt->abyCurrBSSID, WLAN_ADDR_LEN);
 759     pMgmt->sNodeDBTable[0].wTxDataRate = pMgmt->sNodeDBTable[0].wMaxSuppRate;
 760     pMgmt->sNodeDBTable[0].bShortPreamble = WLAN_GET_CAP_INFO_SHORTPREAMBLE(*pwCapInfo);
 761     pMgmt->sNodeDBTable[0].uRatePollTimeout = FALLBACK_POLL_SECOND;
 762     // Auto rate fallback function initiation.
 763     // RATEbInit(pDevice);
 764     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"pMgmt->sNodeDBTable[0].wTxDataRate = %d \n", pMgmt->sNodeDBTable[0].wTxDataRate);
 765
 766 };
 767
 768 /*+
 769  *
 770  * Routine Description:
 771  *    Add Multicast Node content in Index 0 of KnownNodeDB
 772  *
 773  *
 774  * Return Value:
 775  *    None
 776  *
 777 -*/
 778
 779 void BSSvAddMulticastNode(struct vnt_private *pDevice)
 780 {
 781         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 782
 783     if (!pDevice->bEnableHostWEP)
 784         memset(&pMgmt->sNodeDBTable[0], 0, sizeof(KnownNodeDB));
 785     memset(pMgmt->sNodeDBTable[0].abyMACAddr, 0xff, WLAN_ADDR_LEN);
 786     pMgmt->sNodeDBTable[0].bActive = true;
 787     pMgmt->sNodeDBTable[0].bPSEnable = false;
 788     skb_queue_head_init(&pMgmt->sNodeDBTable[0].sTxPSQueue);
 789     RATEvParseMaxRate((void *) pDevice,
 790                       (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrSuppRates,
 791                       (PWLAN_IE_SUPP_RATES)pMgmt->abyCurrExtSuppRates,
 792                       true,
 793                       &(pMgmt->sNodeDBTable[0].wMaxBasicRate),
 794                       &(pMgmt->sNodeDBTable[0].wMaxSuppRate),
 795                        &(pMgmt->sNodeDBTable[0].wSuppRate),
 796                       &(pMgmt->sNodeDBTable[0].byTopCCKBasicRate),
 797                       &(pMgmt->sNodeDBTable[0].byTopOFDMBasicRate)
 798                      );
 799     pMgmt->sNodeDBTable[0].wTxDataRate = pMgmt->sNodeDBTable[0].wMaxBasicRate;
 800     pMgmt->sNodeDBTable[0].uRatePollTimeout = FALLBACK_POLL_SECOND;
 801
 802 };
 803
 804 /*+
 805  *
 806  * Routine Description:
 807  *
 808  *
 809  *  Second call back function to update Node DB info & AP link status
 810  *
 811  *
 812  * Return Value:
 813  *    none.
 814  *
 815 -*/
 816
 817 void BSSvSecondCallBack(struct work_struct *work)
 818 {
 819         struct vnt_private *pDevice = container_of(work,
 820                         struct vnt_private, second_callback_work.work);
 821         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
 822         int ii;
 823         PWLAN_IE_SSID pItemSSID, pCurrSSID;
 824         u32 uSleepySTACnt = 0;
 825         u32 uNonShortSlotSTACnt = 0;
 826         u32 uLongPreambleSTACnt = 0;
 827
 828         if (pDevice->Flags & fMP_DISCONNECTED)
 829                 return;
 830
 831     spin_lock_irq(&pDevice->lock);
 832
 833     pDevice->uAssocCount = 0;
 834
 835     //Power Saving Mode Tx Burst
 836     if ( pDevice->bEnablePSMode == true ) {
 837         pDevice->ulPSModeWaitTx++;
 838         if ( pDevice->ulPSModeWaitTx >= 2 ) {
 839             pDevice->ulPSModeWaitTx = 0;
 840             pDevice->bPSModeTxBurst = false;
 841         }
 842     }
 843
 844     pDevice->byERPFlag &=
 845         ~(WLAN_SET_ERP_BARKER_MODE(1) | WLAN_SET_ERP_NONERP_PRESENT(1));
 846
 847     if (pDevice->wUseProtectCntDown > 0) {
 848         pDevice->wUseProtectCntDown --;
 849     }
 850     else {
 851         // disable protect mode
 852         pDevice->byERPFlag &= ~(WLAN_SET_ERP_USE_PROTECTION(1));
 853     }
 854
 855 if(pDevice->byReAssocCount > 0) {
 856        pDevice->byReAssocCount++;
 857    if((pDevice->byReAssocCount > 10) && (pDevice->bLinkPass != true)) {  //10 sec timeout
 858                      printk("Re-association timeout!!!\n");
 859                    pDevice->byReAssocCount = 0;
 860                     // if(pDevice->bWPASuppWextEnabled == true)
 861                         {
 862                         union iwreq_data  wrqu;
 863                         memset(&wrqu, 0, sizeof (wrqu));
 864                           wrqu.ap_addr.sa_family = ARPHRD_ETHER;
 865                         PRINT_K("wireless_send_event--->SIOCGIWAP(disassociated)\n");
 866                         wireless_send_event(pDevice->dev, SIOCGIWAP, &wrqu, NULL);
 867                        }
 868      }
 869    else if(pDevice->bLinkPass == true)
 870         pDevice->byReAssocCount = 0;
 871 }
 872
 873  pMgmt->eLastState = pMgmt->eCurrState ;
 874
 875         s_uCalculateLinkQual(pDevice);
 876
 877     for (ii = 0; ii < (MAX_NODE_NUM + 1); ii++) {
 878
 879         if (pMgmt->sNodeDBTable[ii].bActive) {
 880             // Increase in-activity counter
 881             pMgmt->sNodeDBTable[ii].uInActiveCount++;
 882
 883             if (ii > 0) {
 884                 if (pMgmt->sNodeDBTable[ii].uInActiveCount > MAX_INACTIVE_COUNT) {
 885                     BSSvRemoveOneNode(pDevice, ii);
 886                     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 887                         "Inactive timeout [%d] sec, STA index = [%d] remove\n", MAX_INACTIVE_COUNT, ii);
 888                     continue;
 889                 }
 890
 891                 if (pMgmt->sNodeDBTable[ii].eNodeState >= NODE_ASSOC) {
 892
 893                     pDevice->uAssocCount++;
 894
 895                     // check if Non ERP exist
 896                     if (pMgmt->sNodeDBTable[ii].uInActiveCount < ERP_RECOVER_COUNT) {
 897                         if (!pMgmt->sNodeDBTable[ii].bShortPreamble) {
 898                             pDevice->byERPFlag |= WLAN_SET_ERP_BARKER_MODE(1);
 899                             uLongPreambleSTACnt ++;
 900                         }
 901                         if (!pMgmt->sNodeDBTable[ii].bERPExist) {
 902                             pDevice->byERPFlag |= WLAN_SET_ERP_NONERP_PRESENT(1);
 903                             pDevice->byERPFlag |= WLAN_SET_ERP_USE_PROTECTION(1);
 904                         }
 905                         if (!pMgmt->sNodeDBTable[ii].bShortSlotTime)
 906                             uNonShortSlotSTACnt++;
 907                     }
 908                 }
 909
 910                 // check if any STA in PS mode
 911                 if (pMgmt->sNodeDBTable[ii].bPSEnable)
 912                     uSleepySTACnt++;
 913
 914             }
 915
 916             // Rate fallback check
 917             if (!pDevice->bFixRate) {
 918                 if (ii > 0) {
 919                     // ii = 0 for multicast node (AP & Adhoc)
 920                         RATEvTxRateFallBack((void *)pDevice,
 921                                             &(pMgmt->sNodeDBTable[ii]));
 922                 }
 923                 else {
 924                     // ii = 0 reserved for unicast AP node (Infra STA)
 925                         if (pMgmt->eCurrMode == WMAC_MODE_ESS_STA)
 926                                 RATEvTxRateFallBack((void *)pDevice,
 927                                                     &(pMgmt->sNodeDBTable[ii]));
 928                 }
 929
 930             }
 931
 932             // check if pending PS queue
 933             if (pMgmt->sNodeDBTable[ii].wEnQueueCnt != 0) {
 934                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Index= %d, Queue = %d pending \n",
 935                            ii, pMgmt->sNodeDBTable[ii].wEnQueueCnt);
 936                 if ((ii >0) && (pMgmt->sNodeDBTable[ii].wEnQueueCnt > 15)) {
 937                     BSSvRemoveOneNode(pDevice, ii);
 938                     DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "Pending many queues PS STA Index = %d remove \n", ii);
 939                     continue;
 940                 }
 941             }
 942         }
 943
 944     }
 945
 946     if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && (pDevice->byBBType == BB_TYPE_11G)) {
 947
 948         // on/off protect mode
 949         if (WLAN_GET_ERP_USE_PROTECTION(pDevice->byERPFlag)) {
 950             if (!pDevice->bProtectMode) {
 951                 MACvEnableProtectMD(pDevice);
 952                 pDevice->bProtectMode = true;
 953             }
 954         }
 955         else {
 956             if (pDevice->bProtectMode) {
 957                 MACvDisableProtectMD(pDevice);
 958                 pDevice->bProtectMode = false;
 959             }
 960         }
 961         // on/off short slot time
 962
 963         if (uNonShortSlotSTACnt > 0) {
 964             if (pDevice->bShortSlotTime) {
 965                 pDevice->bShortSlotTime = false;
 966                 BBvSetShortSlotTime(pDevice);
 967                 vUpdateIFS((void *)pDevice);
 968             }
 969         }
 970         else {
 971             if (!pDevice->bShortSlotTime) {
 972                 pDevice->bShortSlotTime = true;
 973                 BBvSetShortSlotTime(pDevice);
 974                 vUpdateIFS((void *)pDevice);
 975             }
 976         }
 977
 978         // on/off barker long preamble mode
 979
 980         if (uLongPreambleSTACnt > 0) {
 981             if (!pDevice->bBarkerPreambleMd) {
 982                 MACvEnableBarkerPreambleMd(pDevice);
 983                 pDevice->bBarkerPreambleMd = true;
 984             }
 985         }
 986         else {
 987             if (pDevice->bBarkerPreambleMd) {
 988                 MACvDisableBarkerPreambleMd(pDevice);
 989                 pDevice->bBarkerPreambleMd = false;
 990             }
 991         }
 992
 993     }
 994
 995     // Check if any STA in PS mode, enable DTIM multicast deliver
 996     if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
 997         if (uSleepySTACnt > 0)
 998             pMgmt->sNodeDBTable[0].bPSEnable = true;
 999         else
1000             pMgmt->sNodeDBTable[0].bPSEnable = false;
1001     }
1002
1003     pItemSSID = (PWLAN_IE_SSID)pMgmt->abyDesireSSID;
1004     pCurrSSID = (PWLAN_IE_SSID)pMgmt->abyCurrSSID;
1005
1006     if ((pMgmt->eCurrMode == WMAC_MODE_STANDBY) ||
1007         (pMgmt->eCurrMode == WMAC_MODE_ESS_STA)) {
1008
1009         if (pMgmt->sNodeDBTable[0].bActive) { // Assoc with BSS
1010
1011             if (pDevice->bUpdateBBVGA) {
1012                 s_vCheckSensitivity(pDevice);
1013                 s_vCheckPreEDThreshold(pDevice);
1014             }
1015
1016             if ((pMgmt->sNodeDBTable[0].uInActiveCount >= (LOST_BEACON_COUNT/2)) &&
1017                 (pDevice->byBBVGACurrent != pDevice->abyBBVGA[0]) ) {
1018                 pDevice->byBBVGANew = pDevice->abyBBVGA[0];
1019                 bScheduleCommand((void *) pDevice,
1020                                  WLAN_CMD_CHANGE_BBSENSITIVITY,
1021                                  NULL);
1022             }
1023
1024                 if (pMgmt->sNodeDBTable[0].uInActiveCount >= LOST_BEACON_COUNT) {
1025                 pMgmt->sNodeDBTable[0].bActive = false;
1026                 pMgmt->eCurrMode = WMAC_MODE_STANDBY;
1027                 pMgmt->eCurrState = WMAC_STATE_IDLE;
1028                 netif_stop_queue(pDevice->dev);
1029                 pDevice->bLinkPass = false;
1030                 ControlvMaskByte(pDevice,MESSAGE_REQUEST_MACREG,MAC_REG_PAPEDELAY,LEDSTS_STS,LEDSTS_SLOW);
1031                 pDevice->bRoaming = true;
1032                 pDevice->bIsRoaming = false;
1033
1034                 DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "Lost AP beacon [%d] sec, disconnected !\n", pMgmt->sNodeDBTable[0].uInActiveCount);
1035                 /* let wpa supplicant know AP may disconnect */
1036       {
1037         union iwreq_data  wrqu;
1038         memset(&wrqu, 0, sizeof (wrqu));
1039         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1040         PRINT_K("wireless_send_event--->SIOCGIWAP(disassociated)\n");
1041         wireless_send_event(pDevice->dev, SIOCGIWAP, &wrqu, NULL);
1042      }
1043             }
1044         }
1045         else if (pItemSSID->len != 0) {
1046 //Davidwang
1047       if ((pDevice->bEnableRoaming == true)&&(!(pMgmt->Cisco_cckm))) {
1048 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "bRoaming %d, !\n", pDevice->bRoaming );
1049 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "bIsRoaming %d, !\n", pDevice->bIsRoaming );
1050           if ((pDevice->bRoaming == true)&&(pDevice->bIsRoaming == true)){
1051                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Fast   Roaming ...\n");
1052                 BSSvClearBSSList((void *) pDevice, pDevice->bLinkPass);
1053                 bScheduleCommand((void *) pDevice,
1054                                  WLAN_CMD_BSSID_SCAN,
1055                                  pMgmt->abyDesireSSID);
1056                 bScheduleCommand((void *) pDevice,
1057                                  WLAN_CMD_SSID,
1058                                  pMgmt->abyDesireSSID);
1059                 pDevice->uAutoReConnectTime = 0;
1060                 pDevice->uIsroamingTime = 0;
1061                 pDevice->bRoaming = false;
1062           }
1063       else if ((pDevice->bRoaming == false)&&(pDevice->bIsRoaming == true)) {
1064                             pDevice->uIsroamingTime++;
1065        if (pDevice->uIsroamingTime >= 20)
1066             pDevice->bIsRoaming = false;
1067          }
1068
1069    }
1070 else {
1071             if (pDevice->uAutoReConnectTime < 10) {
1072                 pDevice->uAutoReConnectTime++;
1073                 //network manager support need not do Roaming scan???
1074                 if(pDevice->bWPASuppWextEnabled ==true)
1075                  pDevice->uAutoReConnectTime = 0;
1076             }
1077             else {
1078             //mike use old encryption status for wpa reauthen
1079               if(pDevice->bWPADEVUp)
1080                   pDevice->eEncryptionStatus = pDevice->eOldEncryptionStatus;
1081
1082                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Roaming ...\n");
1083                 BSSvClearBSSList((void *) pDevice, pDevice->bLinkPass);
1084                 pMgmt->eScanType = WMAC_SCAN_ACTIVE;
1085                 bScheduleCommand((void *) pDevice,
1086                                  WLAN_CMD_BSSID_SCAN,
1087                                  pMgmt->abyDesireSSID);
1088                 bScheduleCommand((void *) pDevice,
1089                                  WLAN_CMD_SSID,
1090                                  pMgmt->abyDesireSSID);
1091                 pDevice->uAutoReConnectTime = 0;
1092             }
1093         }
1094     }
1095     }
1096
1097     if (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA) {
1098         // if adhoc started which essid is NULL string, rescanning.
1099         if ((pMgmt->eCurrState == WMAC_STATE_STARTED) && (pCurrSSID->len == 0)) {
1100             if (pDevice->uAutoReConnectTime < 10) {
1101                 pDevice->uAutoReConnectTime++;
1102             }
1103             else {
1104                 DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "Adhoc re-scanning ...\n");
1105                pMgmt->eScanType = WMAC_SCAN_ACTIVE;
1106                 bScheduleCommand((void *) pDevice, WLAN_CMD_BSSID_SCAN, NULL);
1107                 bScheduleCommand((void *) pDevice, WLAN_CMD_SSID, NULL);
1108                 pDevice->uAutoReConnectTime = 0;
1109             };
1110         }
1111         if (pMgmt->eCurrState == WMAC_STATE_JOINTED) {
1112
1113                 if (pDevice->bUpdateBBVGA) {
1114                         s_vCheckSensitivity(pDevice);
1115                         s_vCheckPreEDThreshold(pDevice);
1116                 }
1117                 if (pMgmt->sNodeDBTable[0].uInActiveCount >=ADHOC_LOST_BEACON_COUNT) {
1118                     DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "Lost other STA beacon [%d] sec, started !\n", pMgmt->sNodeDBTable[0].uInActiveCount);
1119                 pMgmt->sNodeDBTable[0].uInActiveCount = 0;
1120                 pMgmt->eCurrState = WMAC_STATE_STARTED;
1121                 netif_stop_queue(pDevice->dev);
1122                 pDevice->bLinkPass = false;
1123                 ControlvMaskByte(pDevice,MESSAGE_REQUEST_MACREG,MAC_REG_PAPEDELAY,LEDSTS_STS,LEDSTS_SLOW);
1124             }
1125         }
1126     }
1127
1128         if (pDevice->bLinkPass == true) {
1129                 if (pMgmt->eAuthenMode < WMAC_AUTH_WPA ||
1130                         pDevice->fWPA_Authened == true) {
1131                         if (++pDevice->tx_data_time_out > 40) {
1132                                 pDevice->tx_trigger = true;
1133
1134                                 PSbSendNullPacket(pDevice);
1135
1136                                 pDevice->tx_trigger = false;
1137                                 pDevice->tx_data_time_out = 0;
1138                         }
1139                 }
1140
1141                 if (netif_queue_stopped(pDevice->dev))
1142                         netif_wake_queue(pDevice->dev);
1143         }
1144
1145     spin_unlock_irq(&pDevice->lock);
1146
1147         schedule_delayed_work(&pDevice->second_callback_work, HZ);
1148 }
1149
1150 /*+
1151  *
1152  * Routine Description:
1153  *
1154  *
1155  *  Update Tx attemps, Tx failure counter in Node DB
1156  *
1157  *
1158  * Return Value:
1159  *    none.
1160  *
1161 -*/
1162
1163 void BSSvUpdateNodeTxCounter(struct vnt_private *pDevice,
1164         PSStatCounter pStatistic, u8 byTSR, u8 byPktNO)
1165 {
1166         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
1167         u32 uNodeIndex = 0;
1168         u8 byTxRetry;
1169         u16 wRate;
1170         u16 wFallBackRate = RATE_1M;
1171         u8 byFallBack;
1172         int ii;
1173         u8 *pbyDestAddr;
1174         u8 byPktNum;
1175         u16 wFIFOCtl;
1176
1177     byPktNum = (byPktNO & 0x0F) >> 4;
1178     byTxRetry = (byTSR & 0xF0) >> 4;
1179     wRate = (u16) (byPktNO & 0xF0) >> 4;
1180     wFIFOCtl = pStatistic->abyTxPktInfo[byPktNum].wFIFOCtl;
1181     pbyDestAddr = (u8 *) &( pStatistic->abyTxPktInfo[byPktNum].abyDestAddr[0]);
1182
1183     if (wFIFOCtl & FIFOCTL_AUTO_FB_0) {
1184         byFallBack = AUTO_FB_0;
1185     } else if (wFIFOCtl & FIFOCTL_AUTO_FB_1) {
1186         byFallBack = AUTO_FB_1;
1187     } else {
1188         byFallBack = AUTO_FB_NONE;
1189     }
1190
1191     // Only Unicast using support rates
1192     if (wFIFOCtl & FIFOCTL_NEEDACK) {
1193         if (pMgmt->eCurrMode == WMAC_MODE_ESS_STA) {
1194             pMgmt->sNodeDBTable[0].uTxAttempts += 1;
1195             if ( !(byTSR & (TSR_TMO | TSR_RETRYTMO))) {
1196                 // transmit success, TxAttempts at least plus one
1197                 pMgmt->sNodeDBTable[0].uTxOk[MAX_RATE]++;
1198                 if ( (byFallBack == AUTO_FB_NONE) ||
1199                      (wRate < RATE_18M) ) {
1200                     wFallBackRate = wRate;
1201                 } else if (byFallBack == AUTO_FB_0) {
1202                     if (byTxRetry < 5)
1203                         wFallBackRate = awHWRetry0[wRate-RATE_18M][byTxRetry];
1204                     else
1205                         wFallBackRate = awHWRetry0[wRate-RATE_18M][4];
1206                 } else if (byFallBack == AUTO_FB_1) {
1207                     if (byTxRetry < 5)
1208                         wFallBackRate = awHWRetry1[wRate-RATE_18M][byTxRetry];
1209                     else
1210                         wFallBackRate = awHWRetry1[wRate-RATE_18M][4];
1211                 }
1212                 pMgmt->sNodeDBTable[0].uTxOk[wFallBackRate]++;
1213             } else {
1214                 pMgmt->sNodeDBTable[0].uTxFailures ++;
1215             }
1216             pMgmt->sNodeDBTable[0].uTxRetry += byTxRetry;
1217             if (byTxRetry != 0) {
1218                 pMgmt->sNodeDBTable[0].uTxFail[MAX_RATE]+=byTxRetry;
1219                 if ( (byFallBack == AUTO_FB_NONE) ||
1220                      (wRate < RATE_18M) ) {
1221                     pMgmt->sNodeDBTable[0].uTxFail[wRate]+=byTxRetry;
1222                 } else if (byFallBack == AUTO_FB_0) {
1223                         for (ii = 0; ii < byTxRetry; ii++) {
1224                                 if (ii < 5)
1225                                         wFallBackRate =
1226                                                 awHWRetry0[wRate-RATE_18M][ii];
1227                                 else
1228                                         wFallBackRate =
1229                                                 awHWRetry0[wRate-RATE_18M][4];
1230                                 pMgmt->sNodeDBTable[0].uTxFail[wFallBackRate]++;
1231                         }
1232                 } else if (byFallBack == AUTO_FB_1) {
1233                         for (ii = 0; ii < byTxRetry; ii++) {
1234                                 if (ii < 5)
1235                                         wFallBackRate =
1236                                                 awHWRetry1[wRate-RATE_18M][ii];
1237                                 else
1238                                         wFallBackRate =
1239                                                 awHWRetry1[wRate-RATE_18M][4];
1240                                 pMgmt->sNodeDBTable[0].uTxFail[wFallBackRate]++;
1241                         }
1242                 }
1243             }
1244         }
1245
1246         if ((pMgmt->eCurrMode == WMAC_MODE_IBSS_STA) ||
1247             (pMgmt->eCurrMode == WMAC_MODE_ESS_AP)) {
1248
1249                 if (BSSbIsSTAInNodeDB((void *) pDevice,
1250                                       pbyDestAddr,
1251                                       &uNodeIndex)) {
1252                         pMgmt->sNodeDBTable[uNodeIndex].uTxAttempts += 1;
1253                 if ( !(byTSR & (TSR_TMO | TSR_RETRYTMO))) {
1254                     // transmit success, TxAttempts at least plus one
1255                     pMgmt->sNodeDBTable[uNodeIndex].uTxOk[MAX_RATE]++;
1256                     if ( (byFallBack == AUTO_FB_NONE) ||
1257                          (wRate < RATE_18M) ) {
1258                         wFallBackRate = wRate;
1259                     } else if (byFallBack == AUTO_FB_0) {
1260                         if (byTxRetry < 5)
1261                             wFallBackRate = awHWRetry0[wRate-RATE_18M][byTxRetry];
1262                         else
1263                             wFallBackRate = awHWRetry0[wRate-RATE_18M][4];
1264                     } else if (byFallBack == AUTO_FB_1) {
1265                         if (byTxRetry < 5)
1266                             wFallBackRate = awHWRetry1[wRate-RATE_18M][byTxRetry];
1267                         else
1268                             wFallBackRate = awHWRetry1[wRate-RATE_18M][4];
1269                     }
1270                     pMgmt->sNodeDBTable[uNodeIndex].uTxOk[wFallBackRate]++;
1271                 } else {
1272                     pMgmt->sNodeDBTable[uNodeIndex].uTxFailures ++;
1273                 }
1274                 pMgmt->sNodeDBTable[uNodeIndex].uTxRetry += byTxRetry;
1275                 if (byTxRetry != 0) {
1276                     pMgmt->sNodeDBTable[uNodeIndex].uTxFail[MAX_RATE]+=byTxRetry;
1277                     if ( (byFallBack == AUTO_FB_NONE) ||
1278                          (wRate < RATE_18M) ) {
1279                         pMgmt->sNodeDBTable[uNodeIndex].uTxFail[wRate]+=byTxRetry;
1280                     } else if (byFallBack == AUTO_FB_0) {
1281                         for (ii = 0; ii < byTxRetry; ii++) {
1282                                 if (ii < 5)
1283                                         wFallBackRate =
1284                                                 awHWRetry0[wRate-RATE_18M][ii];
1285                                 else
1286                                         wFallBackRate =
1287                                                 awHWRetry0[wRate-RATE_18M][4];
1288                                 pMgmt->sNodeDBTable[uNodeIndex].uTxFail[wFallBackRate]++;
1289                         }
1290                     } else if (byFallBack == AUTO_FB_1) {
1291                       for (ii = 0; ii < byTxRetry; ii++) {
1292                         if (ii < 5)
1293                                 wFallBackRate = awHWRetry1[wRate-RATE_18M][ii];
1294                         else
1295                                 wFallBackRate = awHWRetry1[wRate-RATE_18M][4];
1296                         pMgmt->sNodeDBTable[uNodeIndex].uTxFail[wFallBackRate]++;
1297                       }
1298                     }
1299                 }
1300             }
1301         }
1302     }
1303 }
1304
1305 /*+
1306  *
1307  * Routine Description:
1308  *    Clear Nodes & skb in DB Table
1309  *
1310  *
1311  * Parameters:
1312  *  In:
1313  *      hDeviceContext        - The adapter context.
1314  *      uStartIndex           - starting index
1315  *  Out:
1316  *      none
1317  *
1318  * Return Value:
1319  *    None.
1320  *
1321 -*/
1322
1323 void BSSvClearNodeDBTable(struct vnt_private *pDevice, u32 uStartIndex)
1324 {
1325         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
1326         struct sk_buff  *skb;
1327         int ii;
1328
1329     for (ii = uStartIndex; ii < (MAX_NODE_NUM + 1); ii++) {
1330         if (pMgmt->sNodeDBTable[ii].bActive) {
1331             // check if sTxPSQueue has been initial
1332             if (pMgmt->sNodeDBTable[ii].sTxPSQueue.next != NULL) {
1333                 while ((skb = skb_dequeue(&pMgmt->sNodeDBTable[ii].sTxPSQueue)) != NULL){
1334                         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PS skb != NULL %d\n", ii);
1335                         dev_kfree_skb(skb);
1336                 }
1337             }
1338             memset(&pMgmt->sNodeDBTable[ii], 0, sizeof(KnownNodeDB));
1339         }
1340     }
1341 };
1342
1343 static void s_vCheckSensitivity(struct vnt_private *pDevice)
1344 {
1345         PKnownBSS pBSSList = NULL;
1346         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
1347         int ii;
1348
1349     if ((pMgmt->eCurrState == WMAC_STATE_ASSOC) ||
1350         ((pMgmt->eCurrMode == WMAC_MODE_IBSS_STA) && (pMgmt->eCurrState == WMAC_STATE_JOINTED))) {
1351         pBSSList = BSSpAddrIsInBSSList(pDevice, pMgmt->abyCurrBSSID, (PWLAN_IE_SSID)pMgmt->abyCurrSSID);
1352         if (pBSSList != NULL) {
1353                 /* Update BB register if RSSI is too strong */
1354                 signed long    LocalldBmAverage = 0;
1355                 signed long    uNumofdBm = 0;
1356             for (ii = 0; ii < RSSI_STAT_COUNT; ii++) {
1357                 if (pBSSList->ldBmAverage[ii] != 0) {
1358                     uNumofdBm ++;
1359                     LocalldBmAverage += pBSSList->ldBmAverage[ii];
1360                 }
1361             }
1362             if (uNumofdBm > 0) {
1363                 LocalldBmAverage = LocalldBmAverage/uNumofdBm;
1364                 for (ii=0;ii<BB_VGA_LEVEL;ii++) {
1365                     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"LocalldBmAverage:%ld, %ld %02x\n", LocalldBmAverage, pDevice->ldBmThreshold[ii], pDevice->abyBBVGA[ii]);
1366                     if (LocalldBmAverage < pDevice->ldBmThreshold[ii]) {
1367                             pDevice->byBBVGANew = pDevice->abyBBVGA[ii];
1368                         break;
1369                     }
1370                 }
1371                 if (pDevice->byBBVGANew != pDevice->byBBVGACurrent) {
1372                     pDevice->uBBVGADiffCount++;
1373                     if (pDevice->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD)
1374                         bScheduleCommand(pDevice,
1375                                          WLAN_CMD_CHANGE_BBSENSITIVITY,
1376                                          NULL);
1377                 } else {
1378                     pDevice->uBBVGADiffCount = 0;
1379                 }
1380             }
1381         }
1382     }
1383 }
1384
1385 static void s_uCalculateLinkQual(struct vnt_private *pDevice)
1386 {
1387         unsigned long TxOkRatio, TxCnt;
1388         unsigned long RxOkRatio, RxCnt;
1389         unsigned long RssiRatio;
1390         long ldBm;
1391
1392 TxCnt = pDevice->scStatistic.TxNoRetryOkCount +
1393               pDevice->scStatistic.TxRetryOkCount +
1394               pDevice->scStatistic.TxFailCount;
1395 RxCnt = pDevice->scStatistic.RxFcsErrCnt +
1396               pDevice->scStatistic.RxOkCnt;
1397 TxOkRatio = (TxCnt < 6) ? 4000:((pDevice->scStatistic.TxNoRetryOkCount * 4000) / TxCnt);
1398 RxOkRatio = (RxCnt < 6) ? 2000:((pDevice->scStatistic.RxOkCnt * 2000) / RxCnt);
1399 //decide link quality
1400 if(pDevice->bLinkPass !=true)
1401 {
1402    pDevice->scStatistic.LinkQuality = 0;
1403    pDevice->scStatistic.SignalStren = 0;
1404 }
1405 else
1406 {
1407    RFvRSSITodBm(pDevice, (u8)(pDevice->uCurrRSSI), &ldBm);
1408    if(-ldBm < 50)  {
1409         RssiRatio = 4000;
1410      }
1411    else if(-ldBm > 90) {
1412         RssiRatio = 0;
1413      }
1414    else {
1415         RssiRatio = (40-(-ldBm-50))*4000/40;
1416      }
1417    pDevice->scStatistic.SignalStren = RssiRatio/40;
1418    pDevice->scStatistic.LinkQuality = (RssiRatio+TxOkRatio+RxOkRatio)/100;
1419 }
1420    pDevice->scStatistic.RxFcsErrCnt = 0;
1421    pDevice->scStatistic.RxOkCnt = 0;
1422    pDevice->scStatistic.TxFailCount = 0;
1423    pDevice->scStatistic.TxNoRetryOkCount = 0;
1424    pDevice->scStatistic.TxRetryOkCount = 0;
1425 }
1426
1427 void BSSvClearAnyBSSJoinRecord(struct vnt_private *pDevice)
1428 {
1429         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
1430         int ii;
1431
1432         for (ii = 0; ii < MAX_BSS_NUM; ii++)
1433                 pMgmt->sBSSList[ii].bSelected = false;
1434
1435         return;
1436 }
1437
1438 static void s_vCheckPreEDThreshold(struct vnt_private *pDevice)
1439 {
1440         PKnownBSS pBSSList = NULL;
1441         struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
1442
1443     if ((pMgmt->eCurrState == WMAC_STATE_ASSOC) ||
1444         ((pMgmt->eCurrMode == WMAC_MODE_IBSS_STA) && (pMgmt->eCurrState == WMAC_STATE_JOINTED))) {
1445         pBSSList = BSSpAddrIsInBSSList(pDevice, pMgmt->abyCurrBSSID, (PWLAN_IE_SSID)pMgmt->abyCurrSSID);
1446         if (pBSSList != NULL) {
1447             pDevice->byBBPreEDRSSI = (u8) (~(pBSSList->ldBmAverRange) + 1);
1448             BBvUpdatePreEDThreshold(pDevice, false);
1449         }
1450     }
1451 }
1452