📄 rxtx.c
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if (pDevice->bLongHeader)
cbMACHdLen = WLAN_HDR_ADDR3_LEN + 6;
if (byPktTyp == PK_TYPE_11GB || byPktTyp == PK_TYPE_11GA) {
if (pvRTS != NULL) { //RTS_need
//Fill RsvTime
if (pvRrvTime) {
PSRrvTime_gRTS pBuf = (PSRrvTime_gRTS)pvRrvTime;
pBuf->wRTSTxRrvTime_aa = cpu_to_le16((WORD)s_uGetRTSCTSRsvTime(pDevice, 2, byPktTyp, cbFrameSize, wCurrentRate));//2:RTSTxRrvTime_aa, 1:2.4GHz
pBuf->wRTSTxRrvTime_ba = cpu_to_le16((WORD)s_uGetRTSCTSRsvTime(pDevice, 1, byPktTyp, cbFrameSize, wCurrentRate));//1:RTSTxRrvTime_ba, 1:2.4GHz
pBuf->wRTSTxRrvTime_bb = cpu_to_le16((WORD)s_uGetRTSCTSRsvTime(pDevice, 0, byPktTyp, cbFrameSize, wCurrentRate));//0:RTSTxRrvTime_bb, 1:2.4GHz
pBuf->wTxRrvTime_a = cpu_to_le16((WORD) s_uGetTxRsvTime(pDevice, byPktTyp, cbFrameSize, wCurrentRate, bNeedACK));//2.4G OFDM
pBuf->wTxRrvTime_b = cpu_to_le16((WORD) s_uGetTxRsvTime(pDevice, PK_TYPE_11B, cbFrameSize, pDevice->byTopCCKBasicRate, bNeedACK));//1:CCK
}
//Fill RTS
s_vFillRTSHead(pDevice, byPktTyp, pvRTS, cbFrameSize, bNeedACK, bDisCRC, psEthHeader, wCurrentRate, byFBOption);
}
else {//RTS_needless, PCF mode
//Fill RsvTime
if (pvRrvTime) {
PSRrvTime_gCTS pBuf = (PSRrvTime_gCTS)pvRrvTime;
pBuf->wTxRrvTime_a = cpu_to_le16((WORD)s_uGetTxRsvTime(pDevice, byPktTyp, cbFrameSize, wCurrentRate, bNeedACK));//2.4G OFDM
pBuf->wTxRrvTime_b = cpu_to_le16((WORD)s_uGetTxRsvTime(pDevice, PK_TYPE_11B, cbFrameSize, pDevice->byTopCCKBasicRate, bNeedACK));//1:CCK
pBuf->wCTSTxRrvTime_ba = cpu_to_le16((WORD)s_uGetRTSCTSRsvTime(pDevice, 3, byPktTyp, cbFrameSize, wCurrentRate));//3:CTSTxRrvTime_Ba, 1:2.4GHz
}
//Fill CTS
s_vFillCTSHead(pDevice, uDMAIdx, byPktTyp, pvCTS, cbFrameSize, bNeedACK, bDisCRC, wCurrentRate, byFBOption);
}
}
else if (byPktTyp == PK_TYPE_11A) {
if (pvRTS != NULL) {//RTS_need, non PCF mode
//Fill RsvTime
if (pvRrvTime) {
PSRrvTime_ab pBuf = (PSRrvTime_ab)pvRrvTime;
pBuf->wRTSTxRrvTime = cpu_to_le16((WORD)s_uGetRTSCTSRsvTime(pDevice, 2, byPktTyp, cbFrameSize, wCurrentRate));//2:RTSTxRrvTime_aa, 0:5GHz
pBuf->wTxRrvTime = cpu_to_le16((WORD)s_uGetTxRsvTime(pDevice, byPktTyp, cbFrameSize, wCurrentRate, bNeedACK));//0:OFDM
}
//Fill RTS
s_vFillRTSHead(pDevice, byPktTyp, pvRTS, cbFrameSize, bNeedACK, bDisCRC, psEthHeader, wCurrentRate, byFBOption);
}
else if (pvRTS == NULL) {//RTS_needless, non PCF mode
//Fill RsvTime
if (pvRrvTime) {
PSRrvTime_ab pBuf = (PSRrvTime_ab)pvRrvTime;
pBuf->wTxRrvTime = cpu_to_le16((WORD)s_uGetTxRsvTime(pDevice, PK_TYPE_11A, cbFrameSize, wCurrentRate, bNeedACK)); //0:OFDM
}
}
}
else if (byPktTyp == PK_TYPE_11B) {
if ((pvRTS != NULL)) {//RTS_need, non PCF mode
//Fill RsvTime
if (pvRrvTime) {
PSRrvTime_ab pBuf = (PSRrvTime_ab)pvRrvTime;
pBuf->wRTSTxRrvTime = cpu_to_le16((WORD)s_uGetRTSCTSRsvTime(pDevice, 0, byPktTyp, cbFrameSize, wCurrentRate));//0:RTSTxRrvTime_bb, 1:2.4GHz
pBuf->wTxRrvTime = cpu_to_le16((WORD)s_uGetTxRsvTime(pDevice, PK_TYPE_11B, cbFrameSize, wCurrentRate, bNeedACK));//1:CCK
}
//Fill RTS
s_vFillRTSHead(pDevice, byPktTyp, pvRTS, cbFrameSize, bNeedACK, bDisCRC, psEthHeader, wCurrentRate, byFBOption);
}
else { //RTS_needless, non PCF mode
//Fill RsvTime
if (pvRrvTime) {
PSRrvTime_ab pBuf = (PSRrvTime_ab)pvRrvTime;
pBuf->wTxRrvTime = cpu_to_le16((WORD)s_uGetTxRsvTime(pDevice, PK_TYPE_11B, cbFrameSize, wCurrentRate, bNeedACK)); //1:CCK
}
}
}
//DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_INFO"s_vGenerateTxParameter END.\n");
}
/*
PBYTE pbyBuffer,//point to pTxBufHead
WORD wFragType,//00:Non-Frag, 01:Start, 02:Mid, 03:Last
UINT cbFragmentSize,//Hdr+payoad+FCS
*/
static
VOID
s_vFillFragParameter(
IN PSDevice pDevice,
IN PBYTE pbyBuffer,
IN UINT uTxType,
IN PVOID pvtdCurr,
IN WORD wFragType,
IN UINT cbReqCount
)
{
PSTxBufHead pTxBufHead = (PSTxBufHead) pbyBuffer;
//DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_INFO"s_vFillFragParameter...\n");
if (uTxType == TYPE_SYNCDMA) {
//PSTxSyncDesc ptdCurr = (PSTxSyncDesc)s_pvGetTxDescHead(pDevice, uTxType, uCurIdx);
PSTxSyncDesc ptdCurr = (PSTxSyncDesc)pvtdCurr;
//Set FIFOCtl & TimeStamp in TxSyncDesc
ptdCurr->m_wFIFOCtl = pTxBufHead->wFIFOCtl;
ptdCurr->m_wTimeStamp = pTxBufHead->wTimeStamp;
//Set TSR1 & ReqCount in TxDescHead
ptdCurr->m_td1TD1.wReqCount = cpu_to_le16((WORD)(cbReqCount));
if (wFragType == FRAGCTL_ENDFRAG) { //Last Fragmentation
ptdCurr->m_td1TD1.byTCR |= (TCR_STP | TCR_EDP | EDMSDU);
}
else {
ptdCurr->m_td1TD1.byTCR |= (TCR_STP | TCR_EDP);
}
}
else {
//PSTxDesc ptdCurr = (PSTxDesc)s_pvGetTxDescHead(pDevice, uTxType, uCurIdx);
PSTxDesc ptdCurr = (PSTxDesc)pvtdCurr;
//Set TSR1 & ReqCount in TxDescHead
ptdCurr->m_td1TD1.wReqCount = cpu_to_le16((WORD)(cbReqCount));
if (wFragType == FRAGCTL_ENDFRAG) { //Last Fragmentation
ptdCurr->m_td1TD1.byTCR |= (TCR_STP | TCR_EDP | EDMSDU);
}
else {
ptdCurr->m_td1TD1.byTCR |= (TCR_STP | TCR_EDP);
}
}
pTxBufHead->wFragCtl |= (WORD)wFragType;//0x0001; //0000 0000 0000 0001
//DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_INFO"s_vFillFragParameter END\n");
}
static
UINT
s_cbFillTxBufHead (
IN PSDevice pDevice,
IN BYTE byPktTyp,
IN PBYTE pbyTxBufferAddr,
IN UINT cbFrameBodySize,
IN UINT uDMAIdx,
IN PSTxDesc pHeadTD,
IN PSEthernetHeader psEthHeader,
IN PBYTE pPacket,
IN BOOL bNeedEncrypt,
IN PSKeyItem pTransmitKey,
IN UINT uNodeIndex,
OUT PUINT puMACfragNum
)
{
UINT cbMACHdLen;
UINT cbFrameSize;
UINT cbFragmentSize; //Hdr+(IV)+payoad+(MIC)+(ICV)+FCS
UINT cbFragPayloadSize;
UINT cbLastFragmentSize; //Hdr+(IV)+payoad+(MIC)+(ICV)+FCS
UINT cbLastFragPayloadSize;
UINT uFragIdx;
PBYTE pbyPayloadHead;
PBYTE pbyIVHead;
PBYTE pbyMacHdr;
WORD wFragType; //00:Non-Frag, 01:Start, 10:Mid, 11:Last
UINT uDuration;
PBYTE pbyBuffer;
// UINT uKeyEntryIdx = NUM_KEY_ENTRY+1;
// BYTE byKeySel = 0xFF;
UINT cbIVlen = 0;
UINT cbICVlen = 0;
UINT cbMIClen = 0;
UINT cbFCSlen = 4;
UINT cb802_1_H_len = 0;
UINT uLength = 0;
UINT uTmpLen = 0;
// BYTE abyTmp[8];
// DWORD dwCRC;
UINT cbMICHDR = 0;
DWORD dwMICKey0, dwMICKey1;
DWORD dwMIC_Priority;
PDWORD pdwMIC_L;
PDWORD pdwMIC_R;
DWORD dwSafeMIC_L, dwSafeMIC_R; //Fix "Last Frag Size" < "MIC length".
BOOL bMIC2Frag = FALSE;
UINT uMICFragLen = 0;
UINT uMACfragNum = 1;
UINT uPadding = 0;
UINT cbReqCount = 0;
BOOL bNeedACK;
BOOL bRTS;
BOOL bIsAdhoc;
PBYTE pbyType;
PSTxDesc ptdCurr;
PSTxBufHead psTxBufHd = (PSTxBufHead) pbyTxBufferAddr;
// UINT tmpDescIdx;
UINT cbHeaderLength = 0;
PVOID pvRrvTime;
PSMICHDRHead pMICHDR;
PVOID pvRTS;
PVOID pvCTS;
PVOID pvTxDataHd;
WORD wTxBufSize; // FFinfo size
UINT uTotalCopyLength = 0;
BYTE byFBOption = AUTO_FB_NONE;
BOOL bIsWEP256 = FALSE;
PSMgmtObject pMgmt = pDevice->pMgmt;
pvRrvTime = pMICHDR = pvRTS = pvCTS = pvTxDataHd = NULL;
//DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_INFO"s_cbFillTxBufHead...\n");
if ((pDevice->eOPMode == OP_MODE_ADHOC) ||
(pDevice->eOPMode == OP_MODE_AP)) {
if (IS_MULTICAST_ADDRESS(&(psEthHeader->abyDstAddr[0])) ||
IS_BROADCAST_ADDRESS(&(psEthHeader->abyDstAddr[0]))) {
bNeedACK = FALSE;
}
else {
bNeedACK = TRUE;
}
bIsAdhoc = TRUE;
}
else {
// MSDUs in Infra mode always need ACK
bNeedACK = TRUE;
bIsAdhoc = FALSE;
}
if (pDevice->bLongHeader)
cbMACHdLen = WLAN_HDR_ADDR3_LEN + 6;
else
cbMACHdLen = WLAN_HDR_ADDR3_LEN;
if ((bNeedEncrypt == TRUE) && (pTransmitKey != NULL)) {
if (pTransmitKey->byCipherSuite == KEY_CTL_WEP) {
cbIVlen = 4;
cbICVlen = 4;
if (pTransmitKey->uKeyLength == WLAN_WEP232_KEYLEN) {
bIsWEP256 = TRUE;
}
}
if (pTransmitKey->byCipherSuite == KEY_CTL_TKIP) {
cbIVlen = 8;//IV+ExtIV
cbMIClen = 8;
cbICVlen = 4;
}
if (pTransmitKey->byCipherSuite == KEY_CTL_CCMP) {
cbIVlen = 8;//RSN Header
cbICVlen = 8;//MIC
cbMICHDR = sizeof(SMICHDRHead);
}
if (pDevice->byLocalID > REV_ID_VT3253_A1) {
//MAC Header should be padding 0 to DW alignment.
uPadding = 4 - (cbMACHdLen%4);
uPadding %= 4;
}
}
cbFrameSize = cbMACHdLen + cbIVlen + (cbFrameBodySize + cbMIClen) + cbICVlen + cbFCSlen;
if ((bNeedACK == FALSE) ||
(cbFrameSize < pDevice->wRTSThreshold) ||
((cbFrameSize >= pDevice->wFragmentationThreshold) && (pDevice->wFragmentationThreshold <= pDevice->wRTSThreshold))
) {
bRTS = FALSE;
}
else {
bRTS = TRUE;
psTxBufHd->wFIFOCtl |= (FIFOCTL_RTS | FIFOCTL_LRETRY);
}
//
// Use for AUTO FALL BACK
//
if (psTxBufHd->wFIFOCtl & FIFOCTL_AUTO_FB_0) {
byFBOption = AUTO_FB_0;
}
else if (psTxBufHd->wFIFOCtl & FIFOCTL_AUTO_FB_1) {
byFBOption = AUTO_FB_1;
}
//////////////////////////////////////////////////////
//Set RrvTime/RTS/CTS Buffer
wTxBufSize = sizeof(STxBufHead);
if (byPktTyp == PK_TYPE_11GB || byPktTyp == PK_TYPE_11GA) {//802.11g packet
if (byFBOption == AUTO_FB_NONE) {
if (bRTS == TRUE) {//RTS_need
pvRrvTime = (PSRrvTime_gRTS) (pbyTxBufferAddr + wTxBufSize);
pMICHDR = (PSMICHDRHead) (pbyTxBufferAddr + wTxBufSize + sizeof(SRrvTime_gRTS));
pvRTS = (PSRTS_g) (pbyTxBufferAddr + wTxBufSize + sizeof(SRrvTime_gRTS) + cbMICHDR);
pvCTS = NULL;
pvTxDataHd = (PSTxDataHead_g) (pbyTxBufferAddr + wTxBufSize + sizeof(SRrvTime_gRTS) + cbMICHDR + sizeof(SRTS_g));
cbHeaderLength = wTxBufSize + sizeof(SRrvTime_gRTS) + cbMICHDR + sizeof(SRTS_g) + sizeof(STxDataHead_g);
}
else { //RTS_needless
pvRrvTime = (PSRrvTime_gCTS) (pbyTxBufferAddr + wTxBufSize);
pMICHDR = (PSMICHDRHead) (pbyTxBufferAddr + wTxBufSize + sizeof(SRrvTime_gCTS));
pvRTS = NULL;
pvCTS = (PSCTS) (pbyTxBufferAddr + wTxBufSize + sizeof(SRrvTime_gCTS) + cbMICHDR);
pvTxDataHd = (PSTxDataHead_g) (pbyTxBufferAddr + wTxBufSize + sizeof(SRrvTime_gCTS) + cbMICHDR + sizeof(SCTS));
cbHeaderLength = wTxBufSize + sizeof(SRrvTime_gCTS) + cbMICHDR + sizeof(SCTS) + sizeof(STxDataHead_g);
}
} else {
// Auto Fall Back
if (bRTS == TRUE) {//RTS_need
pvRrvTime = (PSRrvTime_gRTS) (pbyTxBufferAddr + wTxBufSize);
pMICHDR = (PSMICHDRHead) (pbyTxBufferAddr + wTxBufSize + sizeof(SRrvTime_gRTS));
pvRTS = (PSRTS_g_FB) (pbyTxBufferAddr + wTxBufSize + sizeof(SRr⌨️ 快捷键说明
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