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-/*
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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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-
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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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-
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-/*--------------------- Static Definitions -------------------------*/
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-
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-/*--------------------- Static Classes ----------------------------*/
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-
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-/*--------------------- Static Functions --------------------------*/
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-
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-/*--------------------- Export Variables --------------------------*/
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-
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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 = 0;
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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 ii;
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- unsigned char *pbyBSSID;
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-
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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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-
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- pHeadTD = pDevice->apCurrTD[TYPE_AC0DMA];
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-
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- pHeadTD->m_td1TD1.byTCR = (TCR_EDP | TCR_STP);
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-
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- memcpy(pDevice->sTxEthHeader.abyDstAddr, pbySkbData, ETH_HLEN);
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-
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- cbFrameBodySize = uDataLen - ETH_HLEN;
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-
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- if (ntohs(pDevice->sTxEthHeader.wType) > ETH_DATA_LEN)
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- cbFrameBodySize += 8;
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-
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- if (pDevice->bEncryptionEnable == true) {
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- bNeedEncryption = true;
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-
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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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-
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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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-
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- if (uMACfragNum > AVAIL_TD(pDevice, TYPE_AC0DMA))
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- return false;
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-
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- byPktType = pDevice->byPacketType;
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-
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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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-
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- if (pDevice->wCurrentRate <= RATE_11M)
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- byPktType = PK_TYPE_11B;
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-
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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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-
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- pDevice->bPWBitOn = false;
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-
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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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-
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- pLastTD->pTDInfo->skb = NULL;
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- pLastTD->pTDInfo->byFlags = 0;
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-
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- pDevice->apCurrTD[TYPE_AC0DMA] = pHeadTD;
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-
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- MACvTransmitAC0(pDevice->PortOffset);
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-
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- return true;
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-}
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Malcolm Priestley