extractedLnx/linux-2.6.32/drivers/staging/rt3090/common/mlme.c_MlmeUpdateTxRates.c
VOID MlmeUpdateTxRates(
IN PRTMP_ADAPTER pAd,
IN BOOLEAN bLinkUp,
IN UCHAR apidx)
{
int i, num;
UCHAR Rate = RATE_6, MaxDesire = RATE_1, MaxSupport = RATE_1;
UCHAR MinSupport = RATE_54;
ULONG BasicRateBitmap = 0;
UCHAR CurrBasicRate = RATE_1;
UCHAR *pSupRate, SupRateLen, *pExtRate, ExtRateLen;
PHTTRANSMIT_SETTING pHtPhy = NULL;
PHTTRANSMIT_SETTING pMaxHtPhy = NULL;
PHTTRANSMIT_SETTING pMinHtPhy = NULL;
BOOLEAN *auto_rate_cur_p;
UCHAR HtMcs = MCS_AUTO;
// find max desired rate
UpdateBasicRateBitmap(pAd);
num = 0;
auto_rate_cur_p = NULL;
for (i=0; i<MAX_LEN_OF_SUPPORTED_RATES; i++)
{
switch (pAd->CommonCfg.DesireRate[i] & 0x7f)
{
case 2: Rate = RATE_1; num++; break;
case 4: Rate = RATE_2; num++; break;
case 11: Rate = RATE_5_5; num++; break;
case 22: Rate = RATE_11; num++; break;
case 12: Rate = RATE_6; num++; break;
case 18: Rate = RATE_9; num++; break;
case 24: Rate = RATE_12; num++; break;
case 36: Rate = RATE_18; num++; break;
case 48: Rate = RATE_24; num++; break;
case 72: Rate = RATE_36; num++; break;
case 96: Rate = RATE_48; num++; break;
case 108: Rate = RATE_54; num++; break;
//default: Rate = RATE_1; break;
}
if (MaxDesire < Rate) MaxDesire = Rate;
}
//===========================================================================
//===========================================================================
#ifdef CONFIG_STA_SUPPORT
IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
{
pHtPhy = &pAd->StaCfg.HTPhyMode;
pMaxHtPhy = &pAd->StaCfg.MaxHTPhyMode;
pMinHtPhy = &pAd->StaCfg.MinHTPhyMode;
auto_rate_cur_p = &pAd->StaCfg.bAutoTxRateSwitch;
HtMcs = pAd->StaCfg.DesiredTransmitSetting.field.MCS;
if ((pAd->StaCfg.BssType == BSS_ADHOC) &&
(pAd->CommonCfg.PhyMode == PHY_11B) &&
(MaxDesire > RATE_11))
{
MaxDesire = RATE_11;
}
}
#endif // CONFIG_STA_SUPPORT //
pAd->CommonCfg.MaxDesiredRate = MaxDesire;
pMinHtPhy->word = 0;
pMaxHtPhy->word = 0;
pHtPhy->word = 0;
// Auto rate switching is enabled only if more than one DESIRED RATES are
// specified; otherwise disabled
if (num <= 1)
{
//OPSTATUS_CLEAR_FLAG(pAd, fOP_STATUS_TX_RATE_SWITCH_ENABLED);
//pAd->CommonCfg.bAutoTxRateSwitch = FALSE;
*auto_rate_cur_p = FALSE;
}
else
{
//OPSTATUS_SET_FLAG(pAd, fOP_STATUS_TX_RATE_SWITCH_ENABLED);
//pAd->CommonCfg.bAutoTxRateSwitch = TRUE;
*auto_rate_cur_p = TRUE;
}
if (HtMcs != MCS_AUTO)
{
//OPSTATUS_CLEAR_FLAG(pAd, fOP_STATUS_TX_RATE_SWITCH_ENABLED);
//pAd->CommonCfg.bAutoTxRateSwitch = FALSE;
*auto_rate_cur_p = FALSE;
}
else
{
//OPSTATUS_SET_FLAG(pAd, fOP_STATUS_TX_RATE_SWITCH_ENABLED);
//pAd->CommonCfg.bAutoTxRateSwitch = TRUE;
*auto_rate_cur_p = TRUE;
}
#ifdef CONFIG_STA_SUPPORT
if ((ADHOC_ON(pAd) || INFRA_ON(pAd)) && (pAd->OpMode == OPMODE_STA))
{
pSupRate = &pAd->StaActive.SupRate[0];
pExtRate = &pAd->StaActive.ExtRate[0];
SupRateLen = pAd->StaActive.SupRateLen;
ExtRateLen = pAd->StaActive.ExtRateLen;
}
else
#endif // CONFIG_STA_SUPPORT //
{
pSupRate = &pAd->CommonCfg.SupRate[0];
pExtRate = &pAd->CommonCfg.ExtRate[0];
SupRateLen = pAd->CommonCfg.SupRateLen;
ExtRateLen = pAd->CommonCfg.ExtRateLen;
}
// find max supported rate
for (i=0; i<SupRateLen; i++)
{
switch (pSupRate[i] & 0x7f)
{
case 2: Rate = RATE_1; if (pSupRate[i] & 0x80) BasicRateBitmap |= 0x0001; break;
case 4: Rate = RATE_2; if (pSupRate[i] & 0x80) BasicRateBitmap |= 0x0002; break;
case 11: Rate = RATE_5_5; if (pSupRate[i] & 0x80) BasicRateBitmap |= 0x0004; break;
case 22: Rate = RATE_11; if (pSupRate[i] & 0x80) BasicRateBitmap |= 0x0008; break;
case 12: Rate = RATE_6; /*if (pSupRate[i] & 0x80)*/ BasicRateBitmap |= 0x0010; break;
case 18: Rate = RATE_9; if (pSupRate[i] & 0x80) BasicRateBitmap |= 0x0020; break;
case 24: Rate = RATE_12; /*if (pSupRate[i] & 0x80)*/ BasicRateBitmap |= 0x0040; break;
case 36: Rate = RATE_18; if (pSupRate[i] & 0x80) BasicRateBitmap |= 0x0080; break;
case 48: Rate = RATE_24; /*if (pSupRate[i] & 0x80)*/ BasicRateBitmap |= 0x0100; break;
case 72: Rate = RATE_36; if (pSupRate[i] & 0x80) BasicRateBitmap |= 0x0200; break;
case 96: Rate = RATE_48; if (pSupRate[i] & 0x80) BasicRateBitmap |= 0x0400; break;
case 108: Rate = RATE_54; if (pSupRate[i] & 0x80) BasicRateBitmap |= 0x0800; break;
default: Rate = RATE_1; break;
}
if (MaxSupport < Rate) MaxSupport = Rate;
if (MinSupport > Rate) MinSupport = Rate;
}
for (i=0; i<ExtRateLen; i++)
{
switch (pExtRate[i] & 0x7f)
{
case 2: Rate = RATE_1; if (pExtRate[i] & 0x80) BasicRateBitmap |= 0x0001; break;
case 4: Rate = RATE_2; if (pExtRate[i] & 0x80) BasicRateBitmap |= 0x0002; break;
case 11: Rate = RATE_5_5; if (pExtRate[i] & 0x80) BasicRateBitmap |= 0x0004; break;
case 22: Rate = RATE_11; if (pExtRate[i] & 0x80) BasicRateBitmap |= 0x0008; break;
case 12: Rate = RATE_6; /*if (pExtRate[i] & 0x80)*/ BasicRateBitmap |= 0x0010; break;
case 18: Rate = RATE_9; if (pExtRate[i] & 0x80) BasicRateBitmap |= 0x0020; break;
case 24: Rate = RATE_12; /*if (pExtRate[i] & 0x80)*/ BasicRateBitmap |= 0x0040; break;
case 36: Rate = RATE_18; if (pExtRate[i] & 0x80) BasicRateBitmap |= 0x0080; break;
case 48: Rate = RATE_24; /*if (pExtRate[i] & 0x80)*/ BasicRateBitmap |= 0x0100; break;
case 72: Rate = RATE_36; if (pExtRate[i] & 0x80) BasicRateBitmap |= 0x0200; break;
case 96: Rate = RATE_48; if (pExtRate[i] & 0x80) BasicRateBitmap |= 0x0400; break;
case 108: Rate = RATE_54; if (pExtRate[i] & 0x80) BasicRateBitmap |= 0x0800; break;
default: Rate = RATE_1; break;
}
if (MaxSupport < Rate) MaxSupport = Rate;
if (MinSupport > Rate) MinSupport = Rate;
}
RTMP_IO_WRITE32(pAd, LEGACY_BASIC_RATE, BasicRateBitmap);
// bug fix
// pAd->CommonCfg.BasicRateBitmap = BasicRateBitmap;
// calculate the exptected ACK rate for each TX rate. This info is used to caculate
// the DURATION field of outgoing uniicast DATA/MGMT frame
for (i=0; i<MAX_LEN_OF_SUPPORTED_RATES; i++)
{
if (BasicRateBitmap & (0x01 << i))
CurrBasicRate = (UCHAR)i;
pAd->CommonCfg.ExpectedACKRate[i] = CurrBasicRate;
}
DBGPRINT(RT_DEBUG_TRACE,("MlmeUpdateTxRates[MaxSupport = %d] = MaxDesire %d Mbps\n", RateIdToMbps[MaxSupport], RateIdToMbps[MaxDesire]));
// max tx rate = min {max desire rate, max supported rate}
if (MaxSupport < MaxDesire)
pAd->CommonCfg.MaxTxRate = MaxSupport;
else
pAd->CommonCfg.MaxTxRate = MaxDesire;
pAd->CommonCfg.MinTxRate = MinSupport;
// 2003-07-31 john - 2500 doesn't have good sensitivity at high OFDM rates. to increase the success
// ratio of initial DHCP packet exchange, TX rate starts from a lower rate depending
// on average RSSI
// 1. RSSI >= -70db, start at 54 Mbps (short distance)
// 2. -70 > RSSI >= -75, start at 24 Mbps (mid distance)
// 3. -75 > RSSI, start at 11 Mbps (long distance)
//if (OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_TX_RATE_SWITCH_ENABLED)/* &&
// OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_MEDIA_STATE_CONNECTED)*/)
if (*auto_rate_cur_p)
{
short dbm = 0;
#ifdef CONFIG_STA_SUPPORT
IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
dbm = pAd->StaCfg.RssiSample.AvgRssi0 - pAd->BbpRssiToDbmDelta;
#endif // CONFIG_STA_SUPPORT //
if (bLinkUp == TRUE)
pAd->CommonCfg.TxRate = RATE_24;
else
pAd->CommonCfg.TxRate = pAd->CommonCfg.MaxTxRate;
if (dbm < -75)
pAd->CommonCfg.TxRate = RATE_11;
else if (dbm < -70)
pAd->CommonCfg.TxRate = RATE_24;
// should never exceed MaxTxRate (consider 11B-only mode)
if (pAd->CommonCfg.TxRate > pAd->CommonCfg.MaxTxRate)
pAd->CommonCfg.TxRate = pAd->CommonCfg.MaxTxRate;
pAd->CommonCfg.TxRateIndex = 0;
}
else
{
pAd->CommonCfg.TxRate = pAd->CommonCfg.MaxTxRate;
pHtPhy->field.MCS = (pAd->CommonCfg.MaxTxRate > 3) ? (pAd->CommonCfg.MaxTxRate - 4) : pAd->CommonCfg.MaxTxRate;
pHtPhy->field.MODE = (pAd->CommonCfg.MaxTxRate > 3) ? MODE_OFDM : MODE_CCK;
pAd->MacTab.Content[BSSID_WCID].HTPhyMode.field.STBC = pHtPhy->field.STBC;
pAd->MacTab.Content[BSSID_WCID].HTPhyMode.field.ShortGI = pHtPhy->field.ShortGI;
pAd->MacTab.Content[BSSID_WCID].HTPhyMode.field.MCS = pHtPhy->field.MCS;
pAd->MacTab.Content[BSSID_WCID].HTPhyMode.field.MODE = pHtPhy->field.MODE;
}
if (pAd->CommonCfg.TxRate <= RATE_11)
{
pMaxHtPhy->field.MODE = MODE_CCK;
pMaxHtPhy->field.MCS = pAd->CommonCfg.TxRate;
pMinHtPhy->field.MCS = pAd->CommonCfg.MinTxRate;
}
else
{
pMaxHtPhy->field.MODE = MODE_OFDM;
pMaxHtPhy->field.MCS = OfdmRateToRxwiMCS[pAd->CommonCfg.TxRate];
if (pAd->CommonCfg.MinTxRate >= RATE_6 && (pAd->CommonCfg.MinTxRate <= RATE_54))
{pMinHtPhy->field.MCS = OfdmRateToRxwiMCS[pAd->CommonCfg.MinTxRate];}
else
{pMinHtPhy->field.MCS = pAd->CommonCfg.MinTxRate;}
}
pHtPhy->word = (pMaxHtPhy->word);
if (bLinkUp && (pAd->OpMode == OPMODE_STA))
{
pAd->MacTab.Content[BSSID_WCID].HTPhyMode.word = pHtPhy->word;
pAd->MacTab.Content[BSSID_WCID].MaxHTPhyMode.word = pMaxHtPhy->word;
pAd->MacTab.Content[BSSID_WCID].MinHTPhyMode.word = pMinHtPhy->word;
}
else
{
switch (pAd->CommonCfg.PhyMode)
{
case PHY_11BG_MIXED:
case PHY_11B:
#ifdef DOT11_N_SUPPORT
case PHY_11BGN_MIXED:
#endif // DOT11_N_SUPPORT //
pAd->CommonCfg.MlmeRate = RATE_1;
pAd->CommonCfg.MlmeTransmit.field.MODE = MODE_CCK;
pAd->CommonCfg.MlmeTransmit.field.MCS = RATE_1;
//#ifdef WIFI_TEST
pAd->CommonCfg.RtsRate = RATE_11;
//#else
// pAd->CommonCfg.RtsRate = RATE_1;
//#endif
break;
case PHY_11G:
case PHY_11A:
#ifdef DOT11_N_SUPPORT
case PHY_11AGN_MIXED:
case PHY_11GN_MIXED:
case PHY_11N_2_4G:
case PHY_11AN_MIXED:
case PHY_11N_5G:
#endif // DOT11_N_SUPPORT //
pAd->CommonCfg.MlmeRate = RATE_6;
pAd->CommonCfg.RtsRate = RATE_6;
pAd->CommonCfg.MlmeTransmit.field.MODE = MODE_OFDM;
pAd->CommonCfg.MlmeTransmit.field.MCS = OfdmRateToRxwiMCS[pAd->CommonCfg.MlmeRate];
break;
case PHY_11ABG_MIXED:
#ifdef DOT11_N_SUPPORT
case PHY_11ABGN_MIXED:
#endif // DOT11_N_SUPPORT //
if (pAd->CommonCfg.Channel <= 14)
{
pAd->CommonCfg.MlmeRate = RATE_1;
pAd->CommonCfg.RtsRate = RATE_1;
pAd->CommonCfg.MlmeTransmit.field.MODE = MODE_CCK;
pAd->CommonCfg.MlmeTransmit.field.MCS = RATE_1;
}
else
{
pAd->CommonCfg.MlmeRate = RATE_6;
pAd->CommonCfg.RtsRate = RATE_6;
pAd->CommonCfg.MlmeTransmit.field.MODE = MODE_OFDM;
pAd->CommonCfg.MlmeTransmit.field.MCS = OfdmRateToRxwiMCS[pAd->CommonCfg.MlmeRate];
}
break;
default: // error
pAd->CommonCfg.MlmeRate = RATE_6;
pAd->CommonCfg.MlmeTransmit.field.MODE = MODE_OFDM;
pAd->CommonCfg.MlmeTransmit.field.MCS = OfdmRateToRxwiMCS[pAd->CommonCfg.MlmeRate];
pAd->CommonCfg.RtsRate = RATE_1;
break;
}
//
// Keep Basic Mlme Rate.
//
pAd->MacTab.Content[MCAST_WCID].HTPhyMode.word = pAd->CommonCfg.MlmeTransmit.word;
if (pAd->CommonCfg.MlmeTransmit.field.MODE == MODE_OFDM)
pAd->MacTab.Content[MCAST_WCID].HTPhyMode.field.MCS = OfdmRateToRxwiMCS[RATE_24];
else
pAd->MacTab.Content[MCAST_WCID].HTPhyMode.field.MCS = RATE_1;
pAd->CommonCfg.BasicMlmeRate = pAd->CommonCfg.MlmeRate;
}
DBGPRINT(RT_DEBUG_TRACE, (" MlmeUpdateTxRates (MaxDesire=%d, MaxSupport=%d, MaxTxRate=%d, MinRate=%d, Rate Switching =%d)\n",
RateIdToMbps[MaxDesire], RateIdToMbps[MaxSupport], RateIdToMbps[pAd->CommonCfg.MaxTxRate], RateIdToMbps[pAd->CommonCfg.MinTxRate],
/*OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_TX_RATE_SWITCH_ENABLED)*/*auto_rate_cur_p));
DBGPRINT(RT_DEBUG_TRACE, (" MlmeUpdateTxRates (TxRate=%d, RtsRate=%d, BasicRateBitmap=0x%04lx)\n",
RateIdToMbps[pAd->CommonCfg.TxRate], RateIdToMbps[pAd->CommonCfg.RtsRate], BasicRateBitmap));
DBGPRINT(RT_DEBUG_TRACE, ("MlmeUpdateTxRates (MlmeTransmit=0x%x, MinHTPhyMode=%x, MaxHTPhyMode=0x%x, HTPhyMode=0x%x)\n",
pAd->CommonCfg.MlmeTransmit.word, pAd->MacTab.Content[BSSID_WCID].MinHTPhyMode.word ,pAd->MacTab.Content[BSSID_WCID].MaxHTPhyMode.word ,pAd->MacTab.Content[BSSID_WCID].HTPhyMode.word ));
}
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