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/*
* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* File: wroute.c
*
* Purpose: handle WMAC frame relay & filtering
*
* Author: Lyndon Chen
*
* Date: May 20, 2003
*
* Functions:
* ROUTEbRelay - Relay packet
*
* Revision History:
*
*/
#include "mac.h"
#include "tcrc.h"
#include "rxtx.h"
#include "wroute.h"
#include "card.h"
#include "baseband.h"
/*--------------------- Static Definitions -------------------------*/
/*--------------------- Static Classes ----------------------------*/
/*--------------------- Static Variables --------------------------*/
static int msglevel = MSG_LEVEL_INFO;
//static int msglevel =MSG_LEVEL_DEBUG;
/*--------------------- Static Functions --------------------------*/
/*--------------------- Export Variables --------------------------*/
/*
* Description:
* Relay packet. Return true if packet is copy to DMA1
*
* Parameters:
* In:
* pDevice -
* pbySkbData - rx packet skb data
* Out:
* true, false
*
* Return Value: true if packet duplicate; otherwise false
*
*/
bool ROUTEbRelay(PSDevice pDevice, unsigned char *pbySkbData, unsigned int uDataLen, unsigned int uNodeIndex)
{
PSMgmtObject pMgmt = pDevice->pMgmt;
PSTxDesc pHeadTD, pLastTD;
unsigned int cbFrameBodySize;
unsigned int uMACfragNum;
unsigned char byPktType;
bool bNeedEncryption = false;
SKeyItem STempKey;
PSKeyItem pTransmitKey = NULL;
unsigned int cbHeaderSize;
unsigned int ii;
unsigned char *pbyBSSID;
if (AVAIL_TD(pDevice, TYPE_AC0DMA) <= 0) {
DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Relay can't allocate TD1..\n");
return false;
}
pHeadTD = pDevice->apCurrTD[TYPE_AC0DMA];
pHeadTD->m_td1TD1.byTCR = (TCR_EDP | TCR_STP);
memcpy(pDevice->sTxEthHeader.abyDstAddr, (unsigned char *)pbySkbData, ETH_HLEN);
cbFrameBodySize = uDataLen - ETH_HLEN;
if (ntohs(pDevice->sTxEthHeader.wType) > ETH_DATA_LEN) {
cbFrameBodySize += 8;
}
if (pDevice->bEncryptionEnable == true) {
bNeedEncryption = true;
// get group key
pbyBSSID = pDevice->abyBroadcastAddr;
if (KeybGetTransmitKey(&(pDevice->sKey), pbyBSSID, GROUP_KEY, &pTransmitKey) == false) {
pTransmitKey = NULL;
DBG_PRT(MSG_LEVEL_DEBUG, KERN_DEBUG "KEY is NULL. [%d]\n", pDevice->pMgmt->eCurrMode);
} else {
DBG_PRT(MSG_LEVEL_DEBUG, KERN_DEBUG "Get GTK.\n");
}
}
if (pDevice->bEnableHostWEP) {
if (uNodeIndex < MAX_NODE_NUM + 1) {
pTransmitKey = &STempKey;
pTransmitKey->byCipherSuite = pMgmt->sNodeDBTable[uNodeIndex].byCipherSuite;
pTransmitKey->dwKeyIndex = pMgmt->sNodeDBTable[uNodeIndex].dwKeyIndex;
pTransmitKey->uKeyLength = pMgmt->sNodeDBTable[uNodeIndex].uWepKeyLength;
pTransmitKey->dwTSC47_16 = pMgmt->sNodeDBTable[uNodeIndex].dwTSC47_16;
pTransmitKey->wTSC15_0 = pMgmt->sNodeDBTable[uNodeIndex].wTSC15_0;
memcpy(pTransmitKey->abyKey,
&pMgmt->sNodeDBTable[uNodeIndex].abyWepKey[0],
pTransmitKey->uKeyLength
);
}
}
uMACfragNum = cbGetFragCount(pDevice, pTransmitKey, cbFrameBodySize, &pDevice->sTxEthHeader);
if (uMACfragNum > AVAIL_TD(pDevice, TYPE_AC0DMA)) {
return false;
}
byPktType = (unsigned char)pDevice->byPacketType;
if (pDevice->bFixRate) {
if (pDevice->eCurrentPHYType == PHY_TYPE_11B) {
if (pDevice->uConnectionRate >= RATE_11M) {
pDevice->wCurrentRate = RATE_11M;
} else {
pDevice->wCurrentRate = (unsigned short)pDevice->uConnectionRate;
}
} else {
if ((pDevice->eCurrentPHYType == PHY_TYPE_11A) &&
(pDevice->uConnectionRate <= RATE_6M)) {
pDevice->wCurrentRate = RATE_6M;
} else {
if (pDevice->uConnectionRate >= RATE_54M)
pDevice->wCurrentRate = RATE_54M;
else
pDevice->wCurrentRate = (unsigned short)pDevice->uConnectionRate;
}
}
} else {
pDevice->wCurrentRate = pDevice->pMgmt->sNodeDBTable[uNodeIndex].wTxDataRate;
}
if (pDevice->wCurrentRate <= RATE_11M)
byPktType = PK_TYPE_11B;
vGenerateFIFOHeader(pDevice, byPktType, pDevice->pbyTmpBuff, bNeedEncryption,
cbFrameBodySize, TYPE_AC0DMA, pHeadTD,
&pDevice->sTxEthHeader, pbySkbData, pTransmitKey, uNodeIndex,
&uMACfragNum,
&cbHeaderSize
);
if (MACbIsRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PS)) {
// Disable PS
MACbPSWakeup(pDevice->PortOffset);
}
pDevice->bPWBitOn = false;
pLastTD = pHeadTD;
for (ii = 0; ii < uMACfragNum; ii++) {
// Poll Transmit the adapter
wmb();
pHeadTD->m_td0TD0.f1Owner = OWNED_BY_NIC;
wmb();
if (ii == (uMACfragNum - 1))
pLastTD = pHeadTD;
pHeadTD = pHeadTD->next;
}
pLastTD->pTDInfo->skb = 0;
pLastTD->pTDInfo->byFlags = 0;
pDevice->apCurrTD[TYPE_AC0DMA] = pHeadTD;
MACvTransmitAC0(pDevice->PortOffset);
return true;
}
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