rtl819x_HTProc.c

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//As this function is mainly ported from Windows driver, so leave the name little changed. If any confusion caused, tell me. Created by WB. 2008.05.08
#include "ieee80211.h"
#include "rtl819x_HT.h"
u8 MCS_FILTER_ALL[16] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

u8 MCS_FILTER_1SS[16] = {0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

u16 MCS_DATA_RATE[2][2][77] =
    {   {   {13, 26, 39, 52, 78, 104, 117, 130, 26, 52, 78 ,104, 156, 208, 234, 260,
            39, 78, 117, 234, 312, 351, 390, 52, 104, 156, 208, 312, 416, 468, 520,
            0, 78, 104, 130, 117, 156, 195, 104, 130, 130, 156, 182, 182, 208, 156, 195,
            195, 234, 273, 273, 312, 130, 156, 181, 156, 181, 208, 234, 208, 234, 260, 260,
            286, 195, 234, 273, 234, 273, 312, 351, 312, 351, 390, 390, 429},           // Long GI, 20MHz
            {14, 29, 43, 58, 87, 116, 130, 144, 29, 58, 87, 116, 173, 231, 260, 289,
            43, 87, 130, 173, 260, 347, 390, 433, 58, 116, 173, 231, 347, 462, 520, 578,
            0, 87, 116, 144, 130, 173, 217, 116, 144, 144, 173, 202, 202, 231, 173, 217,
            217, 260, 303, 303, 347, 144, 173, 202, 173, 202, 231, 260, 231, 260, 289, 289,
            318, 217, 260, 303, 260, 303, 347, 390, 347, 390, 433, 433, 477}    },      // Short GI, 20MHz
        {   {27, 54, 81, 108, 162, 216, 243, 270, 54, 108, 162, 216, 324, 432, 486, 540,
            81, 162, 243, 324, 486, 648, 729, 810, 108, 216, 324, 432, 648, 864, 972, 1080,
            12, 162, 216, 270, 243, 324, 405, 216, 270, 270, 324, 378, 378, 432, 324, 405,
            405, 486, 567, 567, 648, 270, 324, 378, 324, 378, 432, 486, 432, 486, 540, 540,
            594, 405, 486, 567, 486, 567, 648, 729, 648, 729, 810, 810, 891},   // Long GI, 40MHz
            {30, 60, 90, 120, 180, 240, 270, 300, 60, 120, 180, 240, 360, 480, 540, 600,
            90, 180, 270, 360, 540, 720, 810, 900, 120, 240, 360, 480, 720, 960, 1080, 1200,
            13, 180, 240, 300, 270, 360, 450, 240, 300, 300, 360, 420, 420, 480, 360, 450,
            450, 540, 630, 630, 720, 300, 360, 420, 360, 420, 480, 540, 480, 540, 600, 600,
            660, 450, 540, 630, 540, 630, 720, 810, 720, 810, 900, 900, 990}    }   // Short GI, 40MHz
    };

static u8 UNKNOWN_BORADCOM[3] = {0x00, 0x14, 0xbf};
static u8 LINKSYSWRT330_LINKSYSWRT300_BROADCOM[3] = {0x00, 0x1a, 0x70};
static u8 LINKSYSWRT350_LINKSYSWRT150_BROADCOM[3] = {0x00, 0x1d, 0x7e};
static u8 NETGEAR834Bv2_BROADCOM[3] = {0x00, 0x1b, 0x2f};
static u8 BELKINF5D8233V1_RALINK[3] = {0x00, 0x17, 0x3f};   //cosa 03202008
static u8 BELKINF5D82334V3_RALINK[3] = {0x00, 0x1c, 0xdf};
static u8 PCI_RALINK[3] = {0x00, 0x90, 0xcc};
static u8 EDIMAX_RALINK[3] = {0x00, 0x0e, 0x2e};
static u8 AIRLINK_RALINK[3] = {0x00, 0x18, 0x02};
//static u8 DLINK_ATHEROS[3] = {0x00, 0x1c, 0xf0};
static u8 CISCO_BROADCOM[3] = {0x00, 0x17, 0x94};

// 2008/04/01 MH For Cisco G mode RX TP We need to change FW duration. Should we put the
// code in other place??
//static u8 WIFI_CISCO_G_AP[3] = {0x00, 0x40, 0x96};
/********************************************************************************************************************
 *function:  This function update default settings in pHTInfo structure
 *   input:  PRT_HIGH_THROUGHPUT    pHTInfo
 *  output:  none
 *  return:  none
 *  notice:  These value need be modified if any changes.
 * *****************************************************************************************************************/
void HTUpdateDefaultSetting(struct ieee80211_device* ieee)
{
    PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
    //const typeof( ((struct ieee80211_device *)0)->pHTInfo ) *__mptr = &pHTInfo;

    //printk("pHTinfo:%p, &pHTinfo:%p, mptr:%p,  offsetof:%x\n", pHTInfo, &pHTInfo, __mptr, offsetof(struct ieee80211_device, pHTInfo));
    //printk("===>ieee:%p,\n", ieee);
    // ShortGI support
    pHTInfo->bRegShortGI20MHz= 1;
    pHTInfo->bRegShortGI40MHz= 1;

    // 40MHz channel support
    pHTInfo->bRegBW40MHz = 1;

    // CCK rate support in 40MHz channel
    if(pHTInfo->bRegBW40MHz)
        pHTInfo->bRegSuppCCK = 1;
    else
        pHTInfo->bRegSuppCCK = true;

    // AMSDU related
    pHTInfo->nAMSDU_MaxSize = 7935UL;
    pHTInfo->bAMSDU_Support = 0;

    // AMPDU related
    pHTInfo->bAMPDUEnable = 1;
    pHTInfo->AMPDU_Factor = 2; 
    pHTInfo->MPDU_Density = 0;// 0: No restriction, 1: 1/8usec, 2: 1/4usec, 3: 1/2usec, 4: 1usec, 5: 2usec, 6: 4usec, 7:8usec

    // MIMO Power Save
    pHTInfo->SelfMimoPs = 3;// 0: Static Mimo Ps, 1: Dynamic Mimo Ps, 3: No Limitation, 2: Reserved(Set to 3 automatically.)
    if(pHTInfo->SelfMimoPs == 2)
        pHTInfo->SelfMimoPs = 3;
    // 8190 only. Assign rate operation mode to firmware
    ieee->bTxDisableRateFallBack = 0;
    ieee->bTxUseDriverAssingedRate = 0;

#ifdef  TO_DO_LIST
    // 8190 only. Assign duration operation mode to firmware
    pMgntInfo->bTxEnableFwCalcDur = (BOOLEAN)pNdisCommon->bRegTxEnableFwCalcDur;
#endif
    // 8190 only, Realtek proprietary aggregation mode
    // Set MPDUDensity=2,   1: Set MPDUDensity=2(32k)  for Realtek AP and set MPDUDensity=0(8k) for others
    pHTInfo->bRegRT2RTAggregation = 1;//0: Set MPDUDensity=2,   1: Set MPDUDensity=2(32k)  for Realtek AP and set MPDUDensity=0(8k) for others

    // For Rx Reorder Control
    pHTInfo->bRegRxReorderEnable = 1;
    pHTInfo->RxReorderWinSize = 64;
    pHTInfo->RxReorderPendingTime = 30;

#ifdef USB_TX_DRIVER_AGGREGATION_ENABLE
    pHTInfo->UsbTxAggrNum = 4;
#endif
#ifdef USB_RX_AGGREGATION_SUPPORT
    pHTInfo->UsbRxFwAggrEn = 1;
    pHTInfo->UsbRxFwAggrPageNum = 24;
    pHTInfo->UsbRxFwAggrPacketNum = 8;
    pHTInfo->UsbRxFwAggrTimeout = 16; 
#endif


}
/********************************************************************************************************************
 *function:  This function print out each field on HT capability IE mainly from (Beacon/ProbeRsp/AssocReq)
 *   input:  u8*    CapIE       //Capability IE to be printed out
 *           u8*    TitleString //mainly print out caller function
 *  output:  none
 *  return:  none
 *  notice:  Driver should not print out this message by default.
 * *****************************************************************************************************************/
void HTDebugHTCapability(u8* CapIE, u8* TitleString )
{

    static u8   EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};   // For 11n EWC definition, 2007.07.17, by Emily
    PHT_CAPABILITY_ELE      pCapELE;

    if(!memcmp(CapIE, EWC11NHTCap, sizeof(EWC11NHTCap)))
    {
        //EWC IE
        IEEE80211_DEBUG(IEEE80211_DL_HT, "EWC IE in %s()\n", __FUNCTION__);
        pCapELE = (PHT_CAPABILITY_ELE)(&CapIE[4]);
    }else
        pCapELE = (PHT_CAPABILITY_ELE)(&CapIE[0]);

    IEEE80211_DEBUG(IEEE80211_DL_HT, "<Log HT Capability>. Called by %s\n", TitleString );

    IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupported Channel Width = %s\n", (pCapELE->ChlWidth)?"20MHz": "20/40MHz");
    IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport Short GI for 20M = %s\n", (pCapELE->ShortGI20Mhz)?"YES": "NO");
    IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport Short GI for 40M = %s\n", (pCapELE->ShortGI40Mhz)?"YES": "NO");
    IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport TX STBC = %s\n", (pCapELE->TxSTBC)?"YES": "NO");
    IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMax AMSDU Size = %s\n", (pCapELE->MaxAMSDUSize)?"3839": "7935");
    IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport CCK in 20/40 mode = %s\n", (pCapELE->DssCCk)?"YES": "NO");
    IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMax AMPDU Factor = %d\n", pCapELE->MaxRxAMPDUFactor);
    IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMPDU Density = %d\n", pCapELE->MPDUDensity);
    IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMCS Rate Set = [%x][%x][%x][%x][%x]\n", pCapELE->MCS[0],\
                pCapELE->MCS[1], pCapELE->MCS[2], pCapELE->MCS[3], pCapELE->MCS[4]);
    return;

}
/********************************************************************************************************************
 *function:  This function print out each field on HT Information IE mainly from (Beacon/ProbeRsp)
 *   input:  u8*    InfoIE       //Capability IE to be printed out
 *           u8*    TitleString //mainly print out caller function
 *  output:  none
 *  return:  none
 *  notice:  Driver should not print out this message by default.
 * *****************************************************************************************************************/
void HTDebugHTInfo(u8*  InfoIE, u8* TitleString)
{

    static u8   EWC11NHTInfo[] = {0x00, 0x90, 0x4c, 0x34};  // For 11n EWC definition, 2007.07.17, by Emily
    PHT_INFORMATION_ELE     pHTInfoEle;

    if(!memcmp(InfoIE, EWC11NHTInfo, sizeof(EWC11NHTInfo)))
    {
        // Not EWC IE
        IEEE80211_DEBUG(IEEE80211_DL_HT, "EWC IE in %s()\n", __FUNCTION__);
        pHTInfoEle = (PHT_INFORMATION_ELE)(&InfoIE[4]);
    }else
        pHTInfoEle = (PHT_INFORMATION_ELE)(&InfoIE[0]);


    IEEE80211_DEBUG(IEEE80211_DL_HT, "<Log HT Information Element>. Called by %s\n", TitleString);

    IEEE80211_DEBUG(IEEE80211_DL_HT, "\tPrimary channel = %d\n", pHTInfoEle->ControlChl);
    IEEE80211_DEBUG(IEEE80211_DL_HT, "\tSenondary channel =");
    switch(pHTInfoEle->ExtChlOffset)
    {
        case 0:
            IEEE80211_DEBUG(IEEE80211_DL_HT, "Not Present\n");
            break;
        case 1:
            IEEE80211_DEBUG(IEEE80211_DL_HT, "Upper channel\n");
            break;
        case 2:
            IEEE80211_DEBUG(IEEE80211_DL_HT, "Reserved. Eooro!!!\n");
            break;
        case 3:
            IEEE80211_DEBUG(IEEE80211_DL_HT, "Lower Channel\n");
            break;
    }
    IEEE80211_DEBUG(IEEE80211_DL_HT, "\tRecommended channel width = %s\n", (pHTInfoEle->RecommemdedTxWidth)?"20Mhz": "40Mhz");

    IEEE80211_DEBUG(IEEE80211_DL_HT, "\tOperation mode for protection = ");
    switch(pHTInfoEle->OptMode)
    {
        case 0:
            IEEE80211_DEBUG(IEEE80211_DL_HT, "No Protection\n");
            break;
        case 1:
            IEEE80211_DEBUG(IEEE80211_DL_HT, "HT non-member protection mode\n");
            break;
        case 2:
            IEEE80211_DEBUG(IEEE80211_DL_HT, "Suggest to open protection\n");
            break;
        case 3:
            IEEE80211_DEBUG(IEEE80211_DL_HT, "HT mixed mode\n");
            break;
    }

    IEEE80211_DEBUG(IEEE80211_DL_HT, "\tBasic MCS Rate Set = [%x][%x][%x][%x][%x]\n", pHTInfoEle->BasicMSC[0],\
                pHTInfoEle->BasicMSC[1], pHTInfoEle->BasicMSC[2], pHTInfoEle->BasicMSC[3], pHTInfoEle->BasicMSC[4]);
    return;
}

/*
*   Return:         true if station in half n mode and AP supports 40 bw
*/
bool IsHTHalfNmode40Bandwidth(struct ieee80211_device* ieee)
{
    bool            retValue = false;
    PRT_HIGH_THROUGHPUT  pHTInfo = ieee->pHTInfo;

    if(pHTInfo->bCurrentHTSupport == false )    // wireless is n mode
        retValue = false;
    else if(pHTInfo->bRegBW40MHz == false)  // station supports 40 bw
        retValue = false;
    else if(!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))  // station in half n mode
        retValue = false;
    else if(((PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf))->ChlWidth) // ap support 40 bw
        retValue = true;
    else
        retValue = false;

    return retValue;
}

bool IsHTHalfNmodeSGI(struct ieee80211_device* ieee, bool is40MHz)
{
    bool            retValue = false;
    PRT_HIGH_THROUGHPUT  pHTInfo = ieee->pHTInfo;

    if(pHTInfo->bCurrentHTSupport == false )    // wireless is n mode
        retValue = false;
    else if(!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))  // station in half n mode
        retValue = false;
    else if(is40MHz) // ap support 40 bw
    {
        if(((PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf))->ShortGI40Mhz) // ap support 40 bw short GI
            retValue = true;
        else
            retValue = false;
    }
    else
    {
        if(((PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf))->ShortGI20Mhz) // ap support 40 bw short GI
            retValue = true;
        else
            retValue = false;
    }

    return retValue;
}

u16 HTHalfMcsToDataRate(struct ieee80211_device* ieee,  u8  nMcsRate)
{

    u8  is40MHz;
    u8  isShortGI;

    is40MHz  =  (IsHTHalfNmode40Bandwidth(ieee))?1:0;
    isShortGI = (IsHTHalfNmodeSGI(ieee, is40MHz))? 1:0;

    return MCS_DATA_RATE[is40MHz][isShortGI][(nMcsRate&0x7f)];
}


u16 HTMcsToDataRate( struct ieee80211_device* ieee, u8 nMcsRate)
{
    PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;

    u8  is40MHz = (pHTInfo->bCurBW40MHz)?1:0;
    u8  isShortGI = (pHTInfo->bCurBW40MHz)?
                        ((pHTInfo->bCurShortGI40MHz)?1:0):
                        ((pHTInfo->bCurShortGI20MHz)?1:0);
    return MCS_DATA_RATE[is40MHz][isShortGI][(nMcsRate&0x7f)];
}

/********************************************************************************************************************
 *function:  This function returns current datarate.
 *   input:  struct ieee80211_device*   ieee
 *           u8             nDataRate
 *  output:  none
 *  return:  tx rate
 *  notice:  quite unsure about how to use this function //wb
 * *****************************************************************************************************************/
u16  TxCountToDataRate( struct ieee80211_device* ieee, u8 nDataRate)
{
    //PRT_HIGH_THROUGHPUT   pHTInfo = ieee->pHTInfo;
    u16     CCKOFDMRate[12] = {0x02 , 0x04 , 0x0b , 0x16 , 0x0c , 0x12 , 0x18 , 0x24 , 0x30 , 0x48 , 0x60 , 0x6c};
    u8  is40MHz = 0;
    u8  isShortGI = 0;

    if(nDataRate < 12)
    {
        return CCKOFDMRate[nDataRate];
    }
    else
    {
        if (nDataRate >= 0x10 && nDataRate <= 0x1f)//if(nDataRate > 11 && nDataRate < 28 )
        {
            is40MHz = 0;
            isShortGI = 0;

              // nDataRate = nDataRate - 12;
        }
        else if(nDataRate >=0x20  && nDataRate <= 0x2f ) //(27, 44)
        {
            is40MHz = 1;
            isShortGI = 0;

            //nDataRate = nDataRate - 28;
        }
        else if(nDataRate >= 0x30  && nDataRate <= 0x3f )  //(43, 60)
        {
            is40MHz = 0;
            isShortGI = 1;

            //nDataRate = nDataRate - 44;
        }
        else if(nDataRate >= 0x40  && nDataRate <= 0x4f ) //(59, 76)
        {
            is40MHz = 1;
            isShortGI = 1;

            //nDataRate = nDataRate - 60;
        }
        return MCS_DATA_RATE[is40MHz][isShortGI][nDataRate&0xf];
    }
}



bool IsHTHalfNmodeAPs(struct ieee80211_device* ieee)
{
    bool            retValue = false;
    struct ieee80211_network* net = &ieee->current_network;
    if((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3)==0) ||
             (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3)==0) ||
             (memcmp(net->bssid, PCI_RALINK, 3)==0) ||
             (memcmp(net->bssid, EDIMAX_RALINK, 3)==0) ||
             (memcmp(net->bssid, AIRLINK_RALINK, 3)==0) ||
             (net->ralink_cap_exist))
        retValue = true;
    else if((memcmp(net->bssid, UNKNOWN_BORADCOM, 3)==0) ||
            (memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3)==0)||
            (memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3)==0)||
            (memcmp(net->bssid, NETGEAR834Bv2_BROADCOM, 3)==0) ||
            (net->broadcom_cap_exist))
          retValue = true;
    else if(net->bssht.bdRT2RTAggregation)
        retValue = true;
    else
        retValue = false;

    return retValue;
}

/********************************************************************************************************************
 *function:  This function returns peer IOT.
 *   input:  struct ieee80211_device*   ieee
 *  output:  none
 *  return:
 *  notice:
 * *****************************************************************************************************************/
void HTIOTPeerDetermine(struct ieee80211_device* ieee)
{
    PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
    struct ieee80211_network* net = &ieee->current_network;
    if(net->bssht.bdRT2RTAggregation)
        pHTInfo->IOTPeer = HT_IOT_PEER_REALTEK;
    else if(net->broadcom_cap_exist)
        pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
    else if((memcmp(net->bssid, UNKNOWN_BORADCOM, 3)==0) ||
            (memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3)==0)||
            (memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3)==0)||
            (memcmp(net->bssid, NETGEAR834Bv2_BROADCOM, 3)==0) )
        pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
    else if((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3)==0) ||
            (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3)==0) ||
            (memcmp(net->bssid, PCI_RALINK, 3)==0) ||
            (memcmp(net->bssid, EDIMAX_RALINK, 3)==0) ||
            (memcmp(net->bssid, AIRLINK_RALINK, 3)==0) ||
             net->ralink_cap_exist)
        pHTInfo->IOTPeer = HT_IOT_PEER_RALINK;
    else if(net->atheros_cap_exist)
        pHTInfo->IOTPeer = HT_IOT_PEER_ATHEROS;
    else if(memcmp(net->bssid, CISCO_BROADCOM, 3)==0)
        pHTInfo->IOTPeer = HT_IOT_PEER_CISCO;
    else
        pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;

    IEEE80211_DEBUG(IEEE80211_DL_IOT, "Joseph debug!! IOTPEER: %x\n", pHTInfo->IOTPeer);
}
/********************************************************************************************************************
 *function:  Check whether driver should declare received rate up to MCS13 only since some chipset is not good
 *       at receiving MCS14~15 frame from some AP.
 *   input:  struct ieee80211_device*   ieee
 *           u8 *           PeerMacAddr
 *  output:  none
 *  return:  return 1 if driver should declare MCS13 only(otherwise return 0)
  * *****************************************************************************************************************/
u8 HTIOTActIsDisableMCS14(struct ieee80211_device* ieee, u8* PeerMacAddr)
{
    u8 ret = 0;
    return ret;
 }


bool HTIOTActIsDisableMCS15(struct ieee80211_device* ieee)
{
    bool retValue = false;

#ifdef TODO
    // Apply for 819u only
#if (HAL_CODE_BASE==RTL8192)

#if (DEV_BUS_TYPE == USB_INTERFACE)
    // Alway disable MCS15 by Jerry Chang's request.by Emily, 2008.04.15
    retValue = true;
#elif (DEV_BUS_TYPE == PCI_INTERFACE)
    // Enable MCS15 if the peer is Cisco AP. by Emily, 2008.05.12
//  if(pBssDesc->bCiscoCapExist)
//      retValue = false;
//  else
        retValue = false;
#endif
#endif
#endif
    // Jerry Chang suggest that 8190 1x2 does not need to disable MCS15

    return retValue;
}

bool HTIOTActIsDisableMCSTwoSpatialStream(struct ieee80211_device* ieee, u8 *PeerMacAddr)
{
    bool retValue = false;

#ifdef TODO
    // Apply for 819u only
#endif
    return retValue;
}

/********************************************************************************************************************
 *function:  Check whether driver should disable EDCA turbo mode
 *   input:  struct ieee80211_device*   ieee
 *           u8*            PeerMacAddr
 *  output:  none
 *  return:  return 1 if driver should disable EDCA turbo mode(otherwise return 0)
  * *****************************************************************************************************************/
u8 HTIOTActIsDisableEDCATurbo(struct ieee80211_device*  ieee, u8* PeerMacAddr)
{
    u8  retValue = false;   // default enable EDCA Turbo mode.
    // Set specific EDCA parameter for different AP in DM handler.

    return retValue;
}

/********************************************************************************************************************
 *function:  Check whether we need to use OFDM to sned MGNT frame for broadcom AP
 *   input:  struct ieee80211_network *network   //current network we live
 *  output:  none
 *  return:  return 1 if true
  * *****************************************************************************************************************/
u8 HTIOTActIsMgntUseCCK6M(struct ieee80211_network *network)
{
    u8  retValue = 0;

    // 2008/01/25 MH Judeg if we need to use OFDM to sned MGNT frame for broadcom AP.
    // 2008/01/28 MH We must prevent that we select null bssid to link.

    if(network->broadcom_cap_exist)
    {
        retValue = 1;
    }

    return retValue;
}

u8 HTIOTActIsCCDFsync(u8* PeerMacAddr)
{
    u8  retValue = 0;
    if( (memcmp(PeerMacAddr, UNKNOWN_BORADCOM, 3)==0) ||
        (memcmp(PeerMacAddr, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3)==0) ||
        (memcmp(PeerMacAddr, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3) ==0))
    {
        retValue = 1;
    }

    return retValue;
}

void HTResetIOTSetting(
    PRT_HIGH_THROUGHPUT     pHTInfo
)
{
    pHTInfo->IOTAction = 0;
    pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;
}


/********************************************************************************************************************
 *function:  Construct Capablility Element in Beacon... if HTEnable is turned on
 *   input:  struct ieee80211_device*   ieee
 *           u8*            posHTCap //pointer to store Capability Ele
 *           u8*            len //store length of CE
 *           u8             IsEncrypt //whether encrypt, needed further
 *  output:  none
 *  return:  none
 *  notice:  posHTCap can't be null and should be initialized before.
  * *****************************************************************************************************************/
void HTConstructCapabilityElement(struct ieee80211_device* ieee, u8* posHTCap, u8* len, u8 IsEncrypt)
{
    PRT_HIGH_THROUGHPUT pHT = ieee->pHTInfo;
    PHT_CAPABILITY_ELE  pCapELE = NULL;
    //u8 bIsDeclareMCS13;

    if ((posHTCap == NULL) || (pHT == NULL))
    {
        IEEE80211_DEBUG(IEEE80211_DL_ERR, "posHTCap or pHTInfo can't be null in HTConstructCapabilityElement()\n");
        return;
    }
    memset(posHTCap, 0, *len);
    if(pHT->ePeerHTSpecVer == HT_SPEC_VER_EWC)
    {
        u8  EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};   // For 11n EWC definition, 2007.07.17, by Emily
        memcpy(posHTCap, EWC11NHTCap, sizeof(EWC11NHTCap));
        pCapELE = (PHT_CAPABILITY_ELE)&(posHTCap[4]);
    }else
    {
        pCapELE = (PHT_CAPABILITY_ELE)posHTCap;
    }


    //HT capability info
    pCapELE->AdvCoding      = 0; // This feature is not supported now!!
    if(ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
    {
        pCapELE->ChlWidth = 0;
    }
    else
    {
        pCapELE->ChlWidth = (pHT->bRegBW40MHz?1:0);
    }

//  pCapELE->ChlWidth       = (pHT->bRegBW40MHz?1:0);
    pCapELE->MimoPwrSave        = pHT->SelfMimoPs;
    pCapELE->GreenField     = 0; // This feature is not supported now!!
    pCapELE->ShortGI20Mhz       = 1; // We can receive Short GI!!
    pCapELE->ShortGI40Mhz       = 1; // We can receive Short GI!!
    //DbgPrint("TX HT cap/info ele BW=%d SG20=%d SG40=%d\n\r",
        //pCapELE->ChlWidth, pCapELE->ShortGI20Mhz, pCapELE->ShortGI40Mhz);
    pCapELE->TxSTBC         = 1;
    pCapELE->RxSTBC         = 0;
    pCapELE->DelayBA        = 0;    // Do not support now!!
    pCapELE->MaxAMSDUSize   = (MAX_RECEIVE_BUFFER_SIZE>=7935)?1:0;
    pCapELE->DssCCk         = ((pHT->bRegBW40MHz)?(pHT->bRegSuppCCK?1:0):0);
    pCapELE->PSMP           = 0; // Do not support now!!
    pCapELE->LSigTxopProtect    = 0; // Do not support now!!


    //MAC HT parameters info
    // TODO: Nedd to take care of this part
    IEEE80211_DEBUG(IEEE80211_DL_HT, "TX HT cap/info ele BW=%d MaxAMSDUSize:%d DssCCk:%d\n", pCapELE->ChlWidth, pCapELE->MaxAMSDUSize, pCapELE->DssCCk);

    if( IsEncrypt)
    {
        pCapELE->MPDUDensity    = 7; // 8us
        pCapELE->MaxRxAMPDUFactor   = 2; // 2 is for 32 K and 3 is 64K
    }
    else
    {
        pCapELE->MaxRxAMPDUFactor   = 3; // 2 is for 32 K and 3 is 64K
        pCapELE->MPDUDensity    = 0; // no density
    }

    //Supported MCS set
    memcpy(pCapELE->MCS, ieee->Regdot11HTOperationalRateSet, 16);
    if(pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS15)
        pCapELE->MCS[1] &= 0x7f;

    if(pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS14)
        pCapELE->MCS[1] &= 0xbf;

    if(pHT->IOTAction & HT_IOT_ACT_DISABLE_ALL_2SS)
        pCapELE->MCS[1] &= 0x00;

    // 2008.06.12
    // For RTL819X, if pairwisekey = wep/tkip, ap is ralink, we support only MCS0~7.
    if(ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
    {
        int i;
        for(i = 1; i< 16; i++)
            pCapELE->MCS[i] = 0;
    }

    //Extended HT Capability Info
    memset(&pCapELE->ExtHTCapInfo, 0, 2);


    //TXBF Capabilities
    memset(pCapELE->TxBFCap, 0, 4);

    //Antenna Selection Capabilities
    pCapELE->ASCap = 0;
//add 2 to give space for element ID and len when construct frames
    if(pHT->ePeerHTSpecVer == HT_SPEC_VER_EWC)
        *len = 30 + 2;
    else
        *len = 26 + 2;



//  IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, posHTCap, *len -2);

    //Print each field in detail. Driver should not print out this message by default
//  HTDebugHTCapability(posHTCap, (u8*)"HTConstructCapability()");
    return;

}
/********************************************************************************************************************
 *function:  Construct  Information Element in Beacon... if HTEnable is turned on
 *   input:  struct ieee80211_device*   ieee
 *           u8*            posHTCap //pointer to store Information Ele
 *           u8*            len   //store len of
 *           u8             IsEncrypt //whether encrypt, needed further
 *  output:  none
 *  return:  none
 *  notice:  posHTCap can't be null and be initialized before. only AP and IBSS sta should do this
  * *****************************************************************************************************************/
void HTConstructInfoElement(struct ieee80211_device* ieee, u8* posHTInfo, u8* len, u8 IsEncrypt)
{
    PRT_HIGH_THROUGHPUT pHT = ieee->pHTInfo;
    PHT_INFORMATION_ELE     pHTInfoEle = (PHT_INFORMATION_ELE)posHTInfo;
    if ((posHTInfo == NULL) || (pHTInfoEle == NULL))
    {
        IEEE80211_DEBUG(IEEE80211_DL_ERR, "posHTInfo or pHTInfoEle can't be null in HTConstructInfoElement()\n");
        return;
    }

    memset(posHTInfo, 0, *len);
    if ( (ieee->iw_mode == IW_MODE_ADHOC) || (ieee->iw_mode == IW_MODE_MASTER)) //ap mode is not currently supported
    {
        pHTInfoEle->ControlChl          = ieee->current_network.channel;
        pHTInfoEle->ExtChlOffset            = ((pHT->bRegBW40MHz == false)?HT_EXTCHNL_OFFSET_NO_EXT:
                                            (ieee->current_network.channel<=6)?
                                                HT_EXTCHNL_OFFSET_UPPER:HT_EXTCHNL_OFFSET_LOWER);
        pHTInfoEle->RecommemdedTxWidth  = pHT->bRegBW40MHz;
        pHTInfoEle->RIFS                    = 0;
        pHTInfoEle->PSMPAccessOnly      = 0;
        pHTInfoEle->SrvIntGranularity       = 0;
        pHTInfoEle->OptMode             = pHT->CurrentOpMode;
        pHTInfoEle->NonGFDevPresent     = 0;
        pHTInfoEle->DualBeacon          = 0;
        pHTInfoEle->SecondaryBeacon     = 0;
        pHTInfoEle->LSigTxopProtectFull     = 0;
        pHTInfoEle->PcoActive               = 0;
        pHTInfoEle->PcoPhase                = 0;

        memset(pHTInfoEle->BasicMSC, 0, 16);


        *len = 22 + 2; //same above

    }
    else
    {
        //STA should not generate High Throughput Information Element
        *len = 0;
    }
    //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, posHTInfo, *len - 2);
    //HTDebugHTInfo(posHTInfo, "HTConstructInforElement");
    return;
}

/*
  *  According to experiment, Realtek AP to STA (based on rtl8190) may achieve best performance
  *  if both STA and AP set limitation of aggregation size to 32K, that is, set AMPDU density to 2
  *  (Ref: IEEE 11n specification). However, if Realtek STA associates to other AP, STA should set
  *  limitation of aggregation size to 8K, otherwise, performance of traffic stream from STA to AP
  *  will be much less than the traffic stream from AP to STA if both of the stream runs concurrently
  *  at the same time.
  *
  *  Frame Format
  *  Element ID     Length      OUI         Type1       Reserved
  *  1 byte         1 byte      3 bytes     1 byte      1 byte
  *
  *  OUI        = 0x00, 0xe0, 0x4c,
  *  Type   = 0x02
  *  Reserved   = 0x00
  *
  *  2007.8.21 by Emily
*/
/********************************************************************************************************************
 *function:  Construct  Information Element in Beacon... in RT2RT condition
 *   input:  struct ieee80211_device*   ieee
 *           u8*            posRT2RTAgg //pointer to store Information Ele
 *           u8*            len   //store len
 *  output:  none
 *  return:  none
 *  notice:
  * *****************************************************************************************************************/
void HTConstructRT2RTAggElement(struct ieee80211_device* ieee, u8* posRT2RTAgg, u8* len)
{
    if (posRT2RTAgg == NULL) {
        IEEE80211_DEBUG(IEEE80211_DL_ERR, "posRT2RTAgg can't be null in HTConstructRT2RTAggElement()\n");
        return;
    }
    memset(posRT2RTAgg, 0, *len);
    *posRT2RTAgg++ = 0x00;
    *posRT2RTAgg++ = 0xe0;
    *posRT2RTAgg++ = 0x4c;
    *posRT2RTAgg++ = 0x02;
    *posRT2RTAgg++ = 0x01;
    *posRT2RTAgg = 0x10;//*posRT2RTAgg = 0x02;

    if(ieee->bSupportRemoteWakeUp) {
        *posRT2RTAgg |= 0x08;//RT_HT_CAP_USE_WOW;
    }

    *len = 6 + 2;
    return;
#ifdef TODO
#if (HAL_CODE_BASE == RTL8192 && DEV_BUS_TYPE == USB_INTERFACE)
    /*
    //Emily. If it is required to Ask Realtek AP to send AMPDU during AES mode, enable this
       section of code.
    if(IS_UNDER_11N_AES_MODE(Adapter))
    {
        posRT2RTAgg->Octet[5] |=RT_HT_CAP_USE_AMPDU;
    }else
    {
        posRT2RTAgg->Octet[5] &= 0xfb;
    }
    */

#else
    // Do Nothing
#endif

    posRT2RTAgg->Length = 6;
#endif




}


/********************************************************************************************************************
 *function:  Pick the right Rate Adaptive table to use
 *   input:  struct ieee80211_device*   ieee
 *           u8*            pOperateMCS //A pointer to MCS rate bitmap
 *  return:  always we return true
 *  notice:
  * *****************************************************************************************************************/
u8 HT_PickMCSRate(struct ieee80211_device* ieee, u8* pOperateMCS)
{
    u8                  i;
    if (pOperateMCS == NULL)
    {
        IEEE80211_DEBUG(IEEE80211_DL_ERR, "pOperateMCS can't be null in HT_PickMCSRate()\n");
        return false;
    }

    switch(ieee->mode)
    {
    case IEEE_A:
    case IEEE_B:
    case IEEE_G:
            //legacy rate routine handled at selectedrate

            //no MCS rate
            for(i=0;i<=15;i++){
                pOperateMCS[i] = 0;
            }
            break;

    case IEEE_N_24G:    //assume CCK rate ok
    case IEEE_N_5G:
            // Legacy part we only use 6, 5.5,2,1 for N_24G and 6 for N_5G.
            // Legacy part shall be handled at SelectRateSet().

            //HT part
            // TODO: may be different if we have different number of antenna
            pOperateMCS[0] &=RATE_ADPT_1SS_MASK;    //support MCS 0~7
            pOperateMCS[1] &=RATE_ADPT_2SS_MASK;
            pOperateMCS[3] &=RATE_ADPT_MCS32_MASK;
            break;

    //should never reach here
    default:

            break;

    }

    return true;
}

/*
*   Description:
*       This function will get the highest speed rate in input MCS set.
*
*   /param  Adapter         Pionter to Adapter entity
*           pMCSRateSet     Pointer to MCS rate bitmap
*           pMCSFilter      Pointer to MCS rate filter
*
*   /return Highest MCS rate included in pMCSRateSet and filtered by pMCSFilter.
*
*/
/********************************************************************************************************************
 *function:  This function will get the highest speed rate in input MCS set.
 *   input:  struct ieee80211_device*   ieee
 *           u8*            pMCSRateSet //Pointer to MCS rate bitmap
 *           u8*            pMCSFilter //Pointer to MCS rate filter
 *  return:  Highest MCS rate included in pMCSRateSet and filtered by pMCSFilter
 *  notice:
  * *****************************************************************************************************************/
u8 HTGetHighestMCSRate(struct ieee80211_device* ieee, u8* pMCSRateSet, u8* pMCSFilter)
{
    u8      i, j;
    u8      bitMap;
    u8      mcsRate = 0;
    u8      availableMcsRate[16];
    if (pMCSRateSet == NULL || pMCSFilter == NULL)
    {
        IEEE80211_DEBUG(IEEE80211_DL_ERR, "pMCSRateSet or pMCSFilter can't be null in HTGetHighestMCSRate()\n");
        return false;
    }
    for(i=0; i<16; i++)
        availableMcsRate[i] = pMCSRateSet[i] & pMCSFilter[i];

    for(i = 0; i < 16; i++)
    {
        if(availableMcsRate[i] != 0)
            break;
    }
    if(i == 16)
        return false;

    for(i = 0; i < 16; i++)
    {
        if(availableMcsRate[i] != 0)
        {
            bitMap = availableMcsRate[i];
            for(j = 0; j < 8; j++)
            {
                if((bitMap%2) != 0)
                {
                    if(HTMcsToDataRate(ieee, (8*i+j)) > HTMcsToDataRate(ieee, mcsRate))
                        mcsRate = (8*i+j);
                }
                bitMap = bitMap>>1;
            }
        }
    }
    return (mcsRate|0x80);
}



/*
**
**1.Filter our operation rate set with AP's rate set
**2.shall reference channel bandwidth, STBC, Antenna number
**3.generate rate adative table for firmware
**David 20060906
**
** \pHTSupportedCap: the connected STA's supported rate Capability element
*/
u8 HTFilterMCSRate( struct ieee80211_device* ieee, u8* pSupportMCS, u8* pOperateMCS)
{

    u8 i=0;

    // filter out operational rate set not supported by AP, the length of it is 16
    for(i=0;i<=15;i++){
        pOperateMCS[i] = ieee->Regdot11HTOperationalRateSet[i]&pSupportMCS[i];
    }


    // TODO: adjust our operational rate set  according to our channel bandwidth, STBC and Antenna number

    // TODO: fill suggested rate adaptive rate index and give firmware info using Tx command packet
    // we also shall suggested the first start rate set according to our singal strength
    HT_PickMCSRate(ieee, pOperateMCS);

    // For RTL819X, if pairwisekey = wep/tkip, we support only MCS0~7.
    if(ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
        pOperateMCS[1] = 0;

    //
    // For RTL819X, we support only MCS0~15.
    // And also, we do not know how to use MCS32 now.
    //
    for(i=2; i<=15; i++)
        pOperateMCS[i] = 0;

    return true;
}
void HTSetConnectBwMode(struct ieee80211_device* ieee, HT_CHANNEL_WIDTH Bandwidth, HT_EXTCHNL_OFFSET    Offset);
void HTOnAssocRsp(struct ieee80211_device *ieee)
{
    PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
    PHT_CAPABILITY_ELE      pPeerHTCap = NULL;
    PHT_INFORMATION_ELE     pPeerHTInfo = NULL;
    u16 nMaxAMSDUSize = 0;
    u8* pMcsFilter = NULL;

    static u8               EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};       // For 11n EWC definition, 2007.07.17, by Emily
    static u8               EWC11NHTInfo[] = {0x00, 0x90, 0x4c, 0x34};  // For 11n EWC definition, 2007.07.17, by Emily

    if( pHTInfo->bCurrentHTSupport == false )
    {
        IEEE80211_DEBUG(IEEE80211_DL_ERR, "<=== HTOnAssocRsp(): HT_DISABLE\n");
        return;
    }
    IEEE80211_DEBUG(IEEE80211_DL_HT, "===> HTOnAssocRsp_wq(): HT_ENABLE\n");
//  IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, pHTInfo->PeerHTCapBuf, sizeof(HT_CAPABILITY_ELE));
//  IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, pHTInfo->PeerHTInfoBuf, sizeof(HT_INFORMATION_ELE));

//  HTDebugHTCapability(pHTInfo->PeerHTCapBuf,"HTOnAssocRsp_wq");
//  HTDebugHTInfo(pHTInfo->PeerHTInfoBuf,"HTOnAssocRsp_wq");
    //
    if(!memcmp(pHTInfo->PeerHTCapBuf,EWC11NHTCap, sizeof(EWC11NHTCap)))
        pPeerHTCap = (PHT_CAPABILITY_ELE)(&pHTInfo->PeerHTCapBuf[4]);
    else
        pPeerHTCap = (PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf);

    if(!memcmp(pHTInfo->PeerHTInfoBuf, EWC11NHTInfo, sizeof(EWC11NHTInfo)))
        pPeerHTInfo = (PHT_INFORMATION_ELE)(&pHTInfo->PeerHTInfoBuf[4]);
    else
        pPeerHTInfo = (PHT_INFORMATION_ELE)(pHTInfo->PeerHTInfoBuf);


    // Configurations:
    IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA|IEEE80211_DL_HT, pPeerHTCap, sizeof(HT_CAPABILITY_ELE));
//  IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA|IEEE80211_DL_HT, pPeerHTInfo, sizeof(HT_INFORMATION_ELE));
    // Config Supported Channel Width setting
    //
    HTSetConnectBwMode(ieee, (HT_CHANNEL_WIDTH)(pPeerHTCap->ChlWidth), (HT_EXTCHNL_OFFSET)(pPeerHTInfo->ExtChlOffset));

//  if(pHTInfo->bCurBW40MHz == true)
        pHTInfo->bCurTxBW40MHz = ((pPeerHTInfo->RecommemdedTxWidth == 1)?true:false);

    //
    // Update short GI/ long GI setting
    //
    // TODO:
    pHTInfo->bCurShortGI20MHz=
        ((pHTInfo->bRegShortGI20MHz)?((pPeerHTCap->ShortGI20Mhz==1)?true:false):false);
    pHTInfo->bCurShortGI40MHz=
        ((pHTInfo->bRegShortGI40MHz)?((pPeerHTCap->ShortGI40Mhz==1)?true:false):false);

    //
    // Config TX STBC setting
    //
    // TODO:

    //
    // Config DSSS/CCK  mode in 40MHz mode
    //
    // TODO:
    pHTInfo->bCurSuppCCK =
        ((pHTInfo->bRegSuppCCK)?((pPeerHTCap->DssCCk==1)?true:false):false);


    //
    // Config and configure A-MSDU setting
    //
    pHTInfo->bCurrent_AMSDU_Support = pHTInfo->bAMSDU_Support;

    nMaxAMSDUSize = (pPeerHTCap->MaxAMSDUSize==0)?3839:7935;

    if(pHTInfo->nAMSDU_MaxSize > nMaxAMSDUSize )
        pHTInfo->nCurrent_AMSDU_MaxSize = nMaxAMSDUSize;
    else
        pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;


    //
    // Config A-MPDU setting
    //
    pHTInfo->bCurrentAMPDUEnable = pHTInfo->bAMPDUEnable;

    // <1> Decide AMPDU Factor

    // By Emily
    if(!pHTInfo->bRegRT2RTAggregation)
    {
        // Decide AMPDU Factor according to protocol handshake
        if(pHTInfo->AMPDU_Factor > pPeerHTCap->MaxRxAMPDUFactor)
            pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
        else
            pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;

    }else
    {
        // Set MPDU density to 2 to Realtek AP, and set it to 0 for others
        // Replace MPDU factor declared in original association response frame format. 2007.08.20 by Emily
        if (ieee->current_network.bssht.bdRT2RTAggregation)
        {
            if( ieee->pairwise_key_type != KEY_TYPE_NA)
                // Realtek may set 32k in security mode and 64k for others
                pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
            else
                pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_64K;
        }else
        {
            if(pPeerHTCap->MaxRxAMPDUFactor < HT_AGG_SIZE_32K)
                pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
            else
                pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_32K;
        }
    }

    // <2> Set AMPDU Minimum MPDU Start Spacing
    // 802.11n 3.0 section 9.7d.3
    if(pHTInfo->MPDU_Density > pPeerHTCap->MPDUDensity)
        pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
    else
        pHTInfo->CurrentMPDUDensity = pPeerHTCap->MPDUDensity;
    if(ieee->pairwise_key_type != KEY_TYPE_NA )
        pHTInfo->CurrentMPDUDensity     = 7; // 8us
    // Force TX AMSDU

    // Lanhsin: mark for tmp to avoid deauth by ap from  s3
    //if(memcmp(pMgntInfo->Bssid, NETGEAR834Bv2_BROADCOM, 3)==0)
    if(0)
        {

            pHTInfo->bCurrentAMPDUEnable = false;
            pHTInfo->ForcedAMSDUMode = HT_AGG_FORCE_ENABLE;
            pHTInfo->ForcedAMSDUMaxSize = 7935;

        pHTInfo->IOTAction |=  HT_IOT_ACT_TX_USE_AMSDU_8K;
    }

    // Rx Reorder Setting
    pHTInfo->bCurRxReorderEnable = pHTInfo->bRegRxReorderEnable;

    //
    // Filter out unsupported HT rate for this AP
    // Update RATR table
    // This is only for 8190 ,8192 or later product which using firmware to handle rate adaptive mechanism.
    //

    // Handle Ralink AP bad MCS rate set condition. Joseph.
    // This fix the bug of Ralink AP. This may be removed in the future.
    if(pPeerHTCap->MCS[0] == 0)
        pPeerHTCap->MCS[0] = 0xff;

    HTFilterMCSRate(ieee, pPeerHTCap->MCS, ieee->dot11HTOperationalRateSet);

    //
    // Config MIMO Power Save setting
    //
    pHTInfo->PeerMimoPs = pPeerHTCap->MimoPwrSave;
    if(pHTInfo->PeerMimoPs == MIMO_PS_STATIC)
        pMcsFilter = MCS_FILTER_1SS;
    else
        pMcsFilter = MCS_FILTER_ALL;
    //WB add for MCS8 bug
//  pMcsFilter = MCS_FILTER_1SS;
    ieee->HTHighestOperaRate = HTGetHighestMCSRate(ieee, ieee->dot11HTOperationalRateSet, pMcsFilter);
    ieee->HTCurrentOperaRate = ieee->HTHighestOperaRate;

    //
    // Config current operation mode.
    //
    pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;



}

void HTSetConnectBwModeCallback(struct ieee80211_device* ieee);
/********************************************************************************************************************
 *function:  initialize HT info(struct PRT_HIGH_THROUGHPUT)
 *   input:  struct ieee80211_device*   ieee
 *  output:  none
 *  return:  none
 *  notice: This function is called when *  (1) MPInitialization Phase *  (2) Receiving of Deauthentication from AP
********************************************************************************************************************/
// TODO: Should this funciton be called when receiving of Disassociation?
void HTInitializeHTInfo(struct ieee80211_device* ieee)
{
    PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;

    //
    // These parameters will be reset when receiving deauthentication packet
    //
    IEEE80211_DEBUG(IEEE80211_DL_HT, "===========>%s()\n", __FUNCTION__);
    pHTInfo->bCurrentHTSupport = false;

    // 40MHz channel support
    pHTInfo->bCurBW40MHz = false;
    pHTInfo->bCurTxBW40MHz = false;

    // Short GI support
    pHTInfo->bCurShortGI20MHz = false;
    pHTInfo->bCurShortGI40MHz = false;
    pHTInfo->bForcedShortGI = false;

    // CCK rate support
    // This flag is set to true to support CCK rate by default.
    // It will be affected by "pHTInfo->bRegSuppCCK" and AP capabilities only when associate to
    // 11N BSS.
    pHTInfo->bCurSuppCCK = true;

    // AMSDU related
    pHTInfo->bCurrent_AMSDU_Support = false;
    pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;

    // AMPUD related
    pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
    pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;



    // Initialize all of the parameters related to 11n
    memset((void*)(&(pHTInfo->SelfHTCap)), 0, sizeof(pHTInfo->SelfHTCap));
    memset((void*)(&(pHTInfo->SelfHTInfo)), 0, sizeof(pHTInfo->SelfHTInfo));
    memset((void*)(&(pHTInfo->PeerHTCapBuf)), 0, sizeof(pHTInfo->PeerHTCapBuf));
    memset((void*)(&(pHTInfo->PeerHTInfoBuf)), 0, sizeof(pHTInfo->PeerHTInfoBuf));

    pHTInfo->bSwBwInProgress = false;
    pHTInfo->ChnlOp = CHNLOP_NONE;

    // Set default IEEE spec for Draft N
    pHTInfo->ePeerHTSpecVer = HT_SPEC_VER_IEEE;

    // Realtek proprietary aggregation mode
    pHTInfo->bCurrentRT2RTAggregation = false;
    pHTInfo->bCurrentRT2RTLongSlotTime = false;
    pHTInfo->IOTPeer = 0;
    pHTInfo->IOTAction = 0;

    //MCS rate initialized here
    {
        u8* RegHTSuppRateSets = &(ieee->RegHTSuppRateSet[0]);
        RegHTSuppRateSets[0] = 0xFF;    //support MCS 0~7
        RegHTSuppRateSets[1] = 0xFF;    //support MCS 8~15
        RegHTSuppRateSets[4] = 0x01;    //support MCS 32
    }
}
/********************************************************************************************************************
 *function:  initialize Bss HT structure(struct PBSS_HT)
 *   input:  PBSS_HT pBssHT //to be initialized
 *  output:  none
 *  return:  none
 *  notice: This function is called when initialize network structure
********************************************************************************************************************/
void HTInitializeBssDesc(PBSS_HT pBssHT)
{

    pBssHT->bdSupportHT = false;
    memset(pBssHT->bdHTCapBuf, 0, sizeof(pBssHT->bdHTCapBuf));
    pBssHT->bdHTCapLen = 0;
    memset(pBssHT->bdHTInfoBuf, 0, sizeof(pBssHT->bdHTInfoBuf));
    pBssHT->bdHTInfoLen = 0;

    pBssHT->bdHTSpecVer= HT_SPEC_VER_IEEE;

    pBssHT->bdRT2RTAggregation = false;
    pBssHT->bdRT2RTLongSlotTime = false;
}
/********************************************************************************************************************
 *function:  initialize Bss HT structure(struct PBSS_HT)
 *   input:  struct ieee80211_device    *ieee
 *           struct ieee80211_network   *pNetwork //usually current network we are live in
 *  output:  none
 *  return:  none
 *  notice: This function should ONLY be called before association
********************************************************************************************************************/
void HTResetSelfAndSavePeerSetting(struct ieee80211_device* ieee,   struct ieee80211_network * pNetwork)
{
    PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
//  u16                     nMaxAMSDUSize;
//  PHT_CAPABILITY_ELE      pPeerHTCap = (PHT_CAPABILITY_ELE)pNetwork->bssht.bdHTCapBuf;
//  PHT_INFORMATION_ELE     pPeerHTInfo = (PHT_INFORMATION_ELE)pNetwork->bssht.bdHTInfoBuf;
//  u8* pMcsFilter;
    u8  bIOTAction = 0;

    //
    //  Save Peer Setting before Association
    //
    IEEE80211_DEBUG(IEEE80211_DL_HT, "==============>%s()\n", __FUNCTION__);
    /*unmark bEnableHT flag here is the same reason why unmarked in function ieee80211_softmac_new_net. WB 2008.09.10*/
//  if( pHTInfo->bEnableHT &&  pNetwork->bssht.bdSupportHT)
    if (pNetwork->bssht.bdSupportHT)
    {
        pHTInfo->bCurrentHTSupport = true;
        pHTInfo->ePeerHTSpecVer = pNetwork->bssht.bdHTSpecVer;

        // Save HTCap and HTInfo information Element
        if(pNetwork->bssht.bdHTCapLen > 0 &&    pNetwork->bssht.bdHTCapLen <= sizeof(pHTInfo->PeerHTCapBuf))
            memcpy(pHTInfo->PeerHTCapBuf, pNetwork->bssht.bdHTCapBuf, pNetwork->bssht.bdHTCapLen);

        if(pNetwork->bssht.bdHTInfoLen > 0 && pNetwork->bssht.bdHTInfoLen <= sizeof(pHTInfo->PeerHTInfoBuf))
            memcpy(pHTInfo->PeerHTInfoBuf, pNetwork->bssht.bdHTInfoBuf, pNetwork->bssht.bdHTInfoLen);

        // Check whether RT to RT aggregation mode is enabled
        if(pHTInfo->bRegRT2RTAggregation)
        {
            pHTInfo->bCurrentRT2RTAggregation = pNetwork->bssht.bdRT2RTAggregation;
            pHTInfo->bCurrentRT2RTLongSlotTime = pNetwork->bssht.bdRT2RTLongSlotTime;
        }
        else
        {
            pHTInfo->bCurrentRT2RTAggregation = false;
            pHTInfo->bCurrentRT2RTLongSlotTime = false;
        }

        // Determine the IOT Peer Vendor.
        HTIOTPeerDetermine(ieee);

        // Decide IOT Action
        // Must be called after the parameter of pHTInfo->bCurrentRT2RTAggregation is decided
        pHTInfo->IOTAction = 0;
        bIOTAction = HTIOTActIsDisableMCS14(ieee, pNetwork->bssid);
        if(bIOTAction)
            pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS14;

        bIOTAction = HTIOTActIsDisableMCS15(ieee);
        if(bIOTAction)
            pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS15;

        bIOTAction = HTIOTActIsDisableMCSTwoSpatialStream(ieee, pNetwork->bssid);
        if(bIOTAction)
            pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_ALL_2SS;


        bIOTAction = HTIOTActIsDisableEDCATurbo(ieee, pNetwork->bssid);
        if(bIOTAction)
            pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_EDCA_TURBO;

        bIOTAction = HTIOTActIsMgntUseCCK6M(pNetwork);
        if(bIOTAction)
            pHTInfo->IOTAction |= HT_IOT_ACT_MGNT_USE_CCK_6M;

        bIOTAction = HTIOTActIsCCDFsync(pNetwork->bssid);
        if(bIOTAction)
            pHTInfo->IOTAction |= HT_IOT_ACT_CDD_FSYNC;


    }
    else
    {
        pHTInfo->bCurrentHTSupport = false;
        pHTInfo->bCurrentRT2RTAggregation = false;
        pHTInfo->bCurrentRT2RTLongSlotTime = false;

        pHTInfo->IOTAction = 0;
    }

}

void HTUpdateSelfAndPeerSetting(struct ieee80211_device* ieee,  struct ieee80211_network * pNetwork)
{
    PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
//  PHT_CAPABILITY_ELE      pPeerHTCap = (PHT_CAPABILITY_ELE)pNetwork->bssht.bdHTCapBuf;
    PHT_INFORMATION_ELE     pPeerHTInfo = (PHT_INFORMATION_ELE)pNetwork->bssht.bdHTInfoBuf;

    if(pHTInfo->bCurrentHTSupport)
    {
        //
        // Config current operation mode.
        //
        if(pNetwork->bssht.bdHTInfoLen != 0)
            pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;

        //
        // <TODO: Config according to OBSS non-HT STA present!!>
        //
    }
}

void HTUseDefaultSetting(struct ieee80211_device* ieee)
{
    PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
//  u8  regBwOpMode;

    if(pHTInfo->bEnableHT)
    {
        pHTInfo->bCurrentHTSupport = true;

        pHTInfo->bCurSuppCCK = pHTInfo->bRegSuppCCK;

        pHTInfo->bCurBW40MHz = pHTInfo->bRegBW40MHz;

        pHTInfo->bCurShortGI20MHz= pHTInfo->bRegShortGI20MHz;

        pHTInfo->bCurShortGI40MHz= pHTInfo->bRegShortGI40MHz;

        pHTInfo->bCurrent_AMSDU_Support = pHTInfo->bAMSDU_Support;

        pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;

        pHTInfo->bCurrentAMPDUEnable = pHTInfo->bAMPDUEnable;

        pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;

        pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;

        // Set BWOpMode register

        //update RATR index0
        HTFilterMCSRate(ieee, ieee->Regdot11HTOperationalRateSet, ieee->dot11HTOperationalRateSet);
    //function below is not implemented at all. WB
#ifdef TODO
        Adapter->HalFunc.InitHalRATRTableHandler( Adapter, &pMgntInfo->dot11OperationalRateSet, pMgntInfo->dot11HTOperationalRateSet);
#endif
        ieee->HTHighestOperaRate = HTGetHighestMCSRate(ieee, ieee->dot11HTOperationalRateSet, MCS_FILTER_ALL);
        ieee->HTCurrentOperaRate = ieee->HTHighestOperaRate;

    }
    else
    {
        pHTInfo->bCurrentHTSupport = false;
    }
    return;
}
/********************************************************************************************************************
 *function:  check whether HT control field exists
 *   input:  struct ieee80211_device    *ieee
 *           u8*            pFrame //coming skb->data
 *  output:  none
 *  return:  return true if HT control field exists(false otherwise)
 *  notice:
********************************************************************************************************************/
u8 HTCCheck(struct ieee80211_device* ieee, u8*  pFrame)
{
    if(ieee->pHTInfo->bCurrentHTSupport)
    {
        if( (IsQoSDataFrame(pFrame) && Frame_Order(pFrame)) == 1)
        {
            IEEE80211_DEBUG(IEEE80211_DL_HT, "HT CONTROL FILED EXIST!!\n");
            return true;
        }
    }
    return false;
}

//
// This function set bandwidth mode in protocol layer.
//
void HTSetConnectBwMode(struct ieee80211_device* ieee, HT_CHANNEL_WIDTH Bandwidth, HT_EXTCHNL_OFFSET    Offset)
{
    PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
//  u32 flags = 0;

    if(pHTInfo->bRegBW40MHz == false)
        return;



    // To reduce dummy operation
//  if((pHTInfo->bCurBW40MHz==false && Bandwidth==HT_CHANNEL_WIDTH_20) ||
//     (pHTInfo->bCurBW40MHz==true && Bandwidth==HT_CHANNEL_WIDTH_20_40 && Offset==pHTInfo->CurSTAExtChnlOffset))
//      return;

//  spin_lock_irqsave(&(ieee->bw_spinlock), flags);
    if(pHTInfo->bSwBwInProgress) {
//      spin_unlock_irqrestore(&(ieee->bw_spinlock), flags);
        return;
    }
    //if in half N mode, set to 20M bandwidth please 09.08.2008 WB.
    if(Bandwidth==HT_CHANNEL_WIDTH_20_40 && (!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev)))
     {
            // Handle Illegal extension channel offset!!
        if(ieee->current_network.channel<2 && Offset==HT_EXTCHNL_OFFSET_LOWER)
            Offset = HT_EXTCHNL_OFFSET_NO_EXT;
        if(Offset==HT_EXTCHNL_OFFSET_UPPER || Offset==HT_EXTCHNL_OFFSET_LOWER) {
            pHTInfo->bCurBW40MHz = true;
            pHTInfo->CurSTAExtChnlOffset = Offset;
        } else {
            pHTInfo->bCurBW40MHz = false;
            pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
        }
    } else {
        pHTInfo->bCurBW40MHz = false;
        pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
    }

    pHTInfo->bSwBwInProgress = true;

    // TODO: 2007.7.13 by Emily Wait 2000ms  in order to guarantee that switching
    //   bandwidth is executed after scan is finished. It is a temporal solution
    //   because software should ganrantee the last operation of switching bandwidth
    //   is executed properlly.
    HTSetConnectBwModeCallback(ieee);

//  spin_unlock_irqrestore(&(ieee->bw_spinlock), flags);
}

void HTSetConnectBwModeCallback(struct ieee80211_device* ieee)
{
    PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;

    IEEE80211_DEBUG(IEEE80211_DL_HT, "======>%s()\n", __FUNCTION__);

    if(pHTInfo->bCurBW40MHz)
    {
        if(pHTInfo->CurSTAExtChnlOffset==HT_EXTCHNL_OFFSET_UPPER)
            ieee->set_chan(ieee->dev, ieee->current_network.channel+2);
        else if(pHTInfo->CurSTAExtChnlOffset==HT_EXTCHNL_OFFSET_LOWER)
            ieee->set_chan(ieee->dev, ieee->current_network.channel-2);
        else
            ieee->set_chan(ieee->dev, ieee->current_network.channel);

        ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20_40, pHTInfo->CurSTAExtChnlOffset);
    } else {
        ieee->set_chan(ieee->dev, ieee->current_network.channel);
        ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
    }

    pHTInfo->bSwBwInProgress = false;
}

EXPORT_SYMBOL(HTUpdateSelfAndPeerSetting);