/*+
*
* Description:
* This routine return max support rate of IES
*
* Parameters:
* In:
* pSupportRateIEs
* pExtSupportRateIEs
*
* Out:
*
* Return Value: max support rate
*
-*/
BYTE
VNTWIFIbyGetMaxSupportRate (
IN PWLAN_IE_SUPP_RATES pSupportRateIEs,
IN PWLAN_IE_SUPP_RATES pExtSupportRateIEs
)
{
BYTE byMaxSupportRate = RATE_1M;
BYTE bySupportRate = RATE_1M;
UINT ii = 0;
if (pSupportRateIEs) {
for (ii = 0; ii < pSupportRateIEs->len; ii++) {
bySupportRate = DATARATEbyGetRateIdx(pSupportRateIEs->abyRates[ii]);
if (bySupportRate > byMaxSupportRate) {
byMaxSupportRate = bySupportRate;
}
}
}
if (pExtSupportRateIEs) {
for (ii = 0; ii < pExtSupportRateIEs->len; ii++) {
bySupportRate = DATARATEbyGetRateIdx(pExtSupportRateIEs->abyRates[ii]);
if (bySupportRate > byMaxSupportRate) {
byMaxSupportRate = bySupportRate;
}
}
}
return byMaxSupportRate;
}
/*+
*
* Description:
* This routine return max support rate of IES
*
* Parameters:
* In:
* pSupportRateIEs
* pExtSupportRateIEs
*
* Out:
*
* Return Value: max support rate
*
-*/
unsigned char
VNTWIFIbyGetMaxSupportRate (
PWLAN_IE_SUPP_RATES pSupportRateIEs,
PWLAN_IE_SUPP_RATES pExtSupportRateIEs
)
{
unsigned char byMaxSupportRate = RATE_1M;
unsigned char bySupportRate = RATE_1M;
unsigned int ii = 0;
if (pSupportRateIEs) {
for (ii = 0; ii < pSupportRateIEs->len; ii++) {
bySupportRate = DATARATEbyGetRateIdx(pSupportRateIEs->abyRates[ii]);
if (bySupportRate > byMaxSupportRate) {
byMaxSupportRate = bySupportRate;
}
}
}
if (pExtSupportRateIEs) {
for (ii = 0; ii < pExtSupportRateIEs->len; ii++) {
bySupportRate = DATARATEbyGetRateIdx(pExtSupportRateIEs->abyRates[ii]);
if (bySupportRate > byMaxSupportRate) {
byMaxSupportRate = bySupportRate;
}
}
}
return byMaxSupportRate;
}
/*+
*
* Description:
* This routine return data rate of ACK packtet
*
* Parameters:
* In:
* byRxDataRate
* pSupportRateIEs
* pExtSupportRateIEs
*
* Out:
*
* Return Value: max support rate
*
-*/
BYTE
VNTWIFIbyGetACKTxRate (
IN BYTE byRxDataRate,
IN PWLAN_IE_SUPP_RATES pSupportRateIEs,
IN PWLAN_IE_SUPP_RATES pExtSupportRateIEs
)
{
BYTE byMaxAckRate;
BYTE byBasicRate;
UINT ii;
if (byRxDataRate <= RATE_11M) {
byMaxAckRate = RATE_1M;
} else {
// 24M is mandatory for 802.11a and 802.11g
byMaxAckRate = RATE_24M;
}
if (pSupportRateIEs) {
for (ii = 0; ii < pSupportRateIEs->len; ii++) {
if (pSupportRateIEs->abyRates[ii] & 0x80) {
byBasicRate = DATARATEbyGetRateIdx(pSupportRateIEs->abyRates[ii]);
if ((byBasicRate <= byRxDataRate) &&
(byBasicRate > byMaxAckRate)) {
byMaxAckRate = byBasicRate;
}
}
}
}
if (pExtSupportRateIEs) {
for (ii = 0; ii < pExtSupportRateIEs->len; ii++) {
if (pExtSupportRateIEs->abyRates[ii] & 0x80) {
byBasicRate = DATARATEbyGetRateIdx(pExtSupportRateIEs->abyRates[ii]);
if ((byBasicRate <= byRxDataRate) &&
(byBasicRate > byMaxAckRate)) {
byMaxAckRate = byBasicRate;
}
}
}
}
return byMaxAckRate;
}