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