diff options
Diffstat (limited to 'drivers/staging/vt6655/dpc.c')
| -rw-r--r-- | drivers/staging/vt6655/dpc.c | 1333 |
1 files changed, 1333 insertions, 0 deletions
diff --git a/drivers/staging/vt6655/dpc.c b/drivers/staging/vt6655/dpc.c new file mode 100644 index 00000000000..7ddaf2603ba --- /dev/null +++ b/drivers/staging/vt6655/dpc.c @@ -0,0 +1,1333 @@ +/* + * 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: dpc.c + * + * Purpose: handle dpc rx functions + * + * Author: Lyndon Chen + * + * Date: May 20, 2003 + * + * Functions: + * device_receive_frame - Rcv 802.11 frame function + * s_bAPModeRxCtl- AP Rcv frame filer Ctl. + * s_bAPModeRxData- AP Rcv data frame handle + * s_bHandleRxEncryption- Rcv decrypted data via on-fly + * s_bHostWepRxEncryption- Rcv encrypted data via host + * s_byGetRateIdx- get rate index + * s_vGetDASA- get data offset + * s_vProcessRxMACHeader- Rcv 802.11 and translate to 802.3 + * + * Revision History: + * + */ + +#include "device.h" +#include "rxtx.h" +#include "tether.h" +#include "card.h" +#include "bssdb.h" +#include "mac.h" +#include "baseband.h" +#include "michael.h" +#include "tkip.h" +#include "tcrc.h" +#include "wctl.h" +#include "wroute.h" +#include "hostap.h" +#include "rf.h" +#include "iowpa.h" +#include "aes_ccmp.h" + +/*--------------------- Static Definitions -------------------------*/ + +/*--------------------- Static Classes ----------------------------*/ + +/*--------------------- Static Variables --------------------------*/ +static int msglevel = MSG_LEVEL_INFO; + +const unsigned char acbyRxRate[MAX_RATE] = +{2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108}; + +/*--------------------- Static Functions --------------------------*/ + +/*--------------------- Static Definitions -------------------------*/ + +/*--------------------- Static Functions --------------------------*/ + +static unsigned char s_byGetRateIdx(unsigned char byRate); + +static void +s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize, + PSEthernetHeader psEthHeader); + +static void +s_vProcessRxMACHeader(PSDevice pDevice, unsigned char *pbyRxBufferAddr, + unsigned int cbPacketSize, bool bIsWEP, bool bExtIV, + unsigned int *pcbHeadSize); + +static bool s_bAPModeRxCtl( + PSDevice pDevice, + unsigned char *pbyFrame, + int iSANodeIndex +); + +static bool s_bAPModeRxData( + PSDevice pDevice, + struct sk_buff *skb, + unsigned int FrameSize, + unsigned int cbHeaderOffset, + int iSANodeIndex, + int iDANodeIndex +); + +static bool s_bHandleRxEncryption( + PSDevice pDevice, + unsigned char *pbyFrame, + unsigned int FrameSize, + unsigned char *pbyRsr, + unsigned char *pbyNewRsr, + PSKeyItem *pKeyOut, + bool *pbExtIV, + unsigned short *pwRxTSC15_0, + unsigned long *pdwRxTSC47_16 +); + +static bool s_bHostWepRxEncryption( + + PSDevice pDevice, + unsigned char *pbyFrame, + unsigned int FrameSize, + unsigned char *pbyRsr, + bool bOnFly, + PSKeyItem pKey, + unsigned char *pbyNewRsr, + bool *pbExtIV, + unsigned short *pwRxTSC15_0, + unsigned long *pdwRxTSC47_16 + +); + +/*--------------------- Export Variables --------------------------*/ + +/*+ + * + * Description: + * Translate Rcv 802.11 header to 802.3 header with Rx buffer + * + * Parameters: + * In: + * pDevice + * dwRxBufferAddr - Address of Rcv Buffer + * cbPacketSize - Rcv Packet size + * bIsWEP - If Rcv with WEP + * Out: + * pcbHeaderSize - 802.11 header size + * + * Return Value: None + * + -*/ +static void +s_vProcessRxMACHeader(PSDevice pDevice, unsigned char *pbyRxBufferAddr, + unsigned int cbPacketSize, bool bIsWEP, bool bExtIV, + unsigned int *pcbHeadSize) +{ + unsigned char *pbyRxBuffer; + unsigned int cbHeaderSize = 0; + unsigned short *pwType; + PS802_11Header pMACHeader; + int ii; + + pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize); + + s_vGetDASA((unsigned char *)pMACHeader, &cbHeaderSize, &pDevice->sRxEthHeader); + + if (bIsWEP) { + if (bExtIV) { + // strip IV&ExtIV , add 8 byte + cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 8); + } else { + // strip IV , add 4 byte + cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 4); + } + } else { + cbHeaderSize += WLAN_HDR_ADDR3_LEN; + } + + pbyRxBuffer = (unsigned char *)(pbyRxBufferAddr + cbHeaderSize); + if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_Bridgetunnel)) { + cbHeaderSize += 6; + } else if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_RFC1042)) { + cbHeaderSize += 6; + pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize); + if ((*pwType != TYPE_PKT_IPX) && (*pwType != cpu_to_le16(0xF380))) { + } else { + cbHeaderSize -= 8; + pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize); + if (bIsWEP) { + if (bExtIV) + *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8); // 8 is IV&ExtIV + else + *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4); // 4 is IV + + } else { + *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN); + } + } + } else { + cbHeaderSize -= 2; + pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize); + if (bIsWEP) { + if (bExtIV) + *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8); // 8 is IV&ExtIV + else + *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4); // 4 is IV + + } else { + *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN); + } + } + + cbHeaderSize -= (ETH_ALEN * 2); + pbyRxBuffer = (unsigned char *)(pbyRxBufferAddr + cbHeaderSize); + for (ii = 0; ii < ETH_ALEN; ii++) + *pbyRxBuffer++ = pDevice->sRxEthHeader.abyDstAddr[ii]; + for (ii = 0; ii < ETH_ALEN; ii++) + *pbyRxBuffer++ = pDevice->sRxEthHeader.abySrcAddr[ii]; + + *pcbHeadSize = cbHeaderSize; +} + +static unsigned char s_byGetRateIdx(unsigned char byRate) +{ + unsigned char byRateIdx; + + for (byRateIdx = 0; byRateIdx < MAX_RATE; byRateIdx++) { + if (acbyRxRate[byRateIdx % MAX_RATE] == byRate) + return byRateIdx; + } + + return 0; +} + +static void +s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize, + PSEthernetHeader psEthHeader) +{ + unsigned int cbHeaderSize = 0; + PS802_11Header pMACHeader; + int ii; + + pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize); + + if ((pMACHeader->wFrameCtl & FC_TODS) == 0) { + if (pMACHeader->wFrameCtl & FC_FROMDS) { + for (ii = 0; ii < ETH_ALEN; ii++) { + psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii]; + psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr3[ii]; + } + } else { + // IBSS mode + for (ii = 0; ii < ETH_ALEN; ii++) { + psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii]; + psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii]; + } + } + } else { + // Is AP mode.. + if (pMACHeader->wFrameCtl & FC_FROMDS) { + for (ii = 0; ii < ETH_ALEN; ii++) { + psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii]; + psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr4[ii]; + cbHeaderSize += 6; + } + } else { + for (ii = 0; ii < ETH_ALEN; ii++) { + psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii]; + psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii]; + } + } + } + *pcbHeaderSize = cbHeaderSize; +} + +//PLICE_DEBUG -> + +void MngWorkItem(void *Context) +{ + PSRxMgmtPacket pRxMgmtPacket; + PSDevice pDevice = (PSDevice) Context; + + spin_lock_irq(&pDevice->lock); + while (pDevice->rxManeQueue.packet_num != 0) { + pRxMgmtPacket = DeQueue(pDevice); + vMgrRxManagePacket(pDevice, pDevice->pMgmt, pRxMgmtPacket); + } + spin_unlock_irq(&pDevice->lock); +} + +//PLICE_DEBUG<- + +bool +device_receive_frame( + PSDevice pDevice, + PSRxDesc pCurrRD +) +{ + PDEVICE_RD_INFO pRDInfo = pCurrRD->pRDInfo; + struct net_device_stats *pStats = &pDevice->stats; + struct sk_buff *skb; + PSMgmtObject pMgmt = pDevice->pMgmt; + PSRxMgmtPacket pRxPacket = &(pDevice->pMgmt->sRxPacket); + PS802_11Header p802_11Header; + unsigned char *pbyRsr; + unsigned char *pbyNewRsr; + unsigned char *pbyRSSI; + PQWORD pqwTSFTime; + unsigned short *pwFrameSize; + unsigned char *pbyFrame; + bool bDeFragRx = false; + bool bIsWEP = false; + unsigned int cbHeaderOffset; + unsigned int FrameSize; + unsigned short wEtherType = 0; + int iSANodeIndex = -1; + int iDANodeIndex = -1; + unsigned int ii; + unsigned int cbIVOffset; + bool bExtIV = false; + unsigned char *pbyRxSts; + unsigned char *pbyRxRate; + unsigned char *pbySQ; + unsigned int cbHeaderSize; + PSKeyItem pKey = NULL; + unsigned short wRxTSC15_0 = 0; + unsigned long dwRxTSC47_16 = 0; + SKeyItem STempKey; + // 802.11h RPI + unsigned long dwDuration = 0; + long ldBm = 0; + long ldBmThreshold = 0; + PS802_11Header pMACHeader; + bool bRxeapol_key = false; + + skb = pRDInfo->skb; + +//PLICE_DEBUG-> + pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma, + pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE); +//PLICE_DEBUG<- + pwFrameSize = (unsigned short *)(skb->data + 2); + FrameSize = cpu_to_le16(pCurrRD->m_rd1RD1.wReqCount) - cpu_to_le16(pCurrRD->m_rd0RD0.wResCount); + + // Max: 2312Payload + 30HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR + // Min (ACK): 10HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR + if ((FrameSize > 2364) || (FrameSize <= 32)) { + // Frame Size error drop this packet. + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 1 \n"); + return false; + } + + pbyRxSts = (unsigned char *)(skb->data); + pbyRxRate = (unsigned char *)(skb->data + 1); + pbyRsr = (unsigned char *)(skb->data + FrameSize - 1); + pbyRSSI = (unsigned char *)(skb->data + FrameSize - 2); + pbyNewRsr = (unsigned char *)(skb->data + FrameSize - 3); + pbySQ = (unsigned char *)(skb->data + FrameSize - 4); + pqwTSFTime = (PQWORD)(skb->data + FrameSize - 12); + pbyFrame = (unsigned char *)(skb->data + 4); + + // get packet size + FrameSize = cpu_to_le16(*pwFrameSize); + + if ((FrameSize > 2346)|(FrameSize < 14)) { // Max: 2312Payload + 30HD +4CRC + // Min: 14 bytes ACK + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 2 \n"); + return false; + } +//PLICE_DEBUG-> + // update receive statistic counter + STAvUpdateRDStatCounter(&pDevice->scStatistic, + *pbyRsr, + *pbyNewRsr, + *pbyRxRate, + pbyFrame, + FrameSize); + + pMACHeader = (PS802_11Header)((unsigned char *)(skb->data) + 8); +//PLICE_DEBUG<- + if (pDevice->bMeasureInProgress) { + if ((*pbyRsr & RSR_CRCOK) != 0) + pDevice->byBasicMap |= 0x01; + + dwDuration = (FrameSize << 4); + dwDuration /= acbyRxRate[*pbyRxRate%MAX_RATE]; + if (*pbyRxRate <= RATE_11M) { + if (*pbyRxSts & 0x01) { + // long preamble + dwDuration += 192; + } else { + // short preamble + dwDuration += 96; + } + } else { + dwDuration += 16; + } + RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm); + ldBmThreshold = -57; + for (ii = 7; ii > 0;) { + if (ldBm > ldBmThreshold) + break; + + ldBmThreshold -= 5; + ii--; + } + pDevice->dwRPIs[ii] += dwDuration; + return false; + } + + if (!is_multicast_ether_addr(pbyFrame)) { + if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (PS802_11Header)(skb->data + 4))) { + pDevice->s802_11Counter.FrameDuplicateCount++; + return false; + } + } + + // Use for TKIP MIC + s_vGetDASA(skb->data+4, &cbHeaderSize, &pDevice->sRxEthHeader); + + // filter packet send from myself + if (ether_addr_equal(pDevice->sRxEthHeader.abySrcAddr, + pDevice->abyCurrentNetAddr)) + return false; + + if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) { + if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) { + p802_11Header = (PS802_11Header)(pbyFrame); + // get SA NodeIndex + if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(p802_11Header->abyAddr2), &iSANodeIndex)) { + pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies; + pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0; + } + } + } + + if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) { + if (s_bAPModeRxCtl(pDevice, pbyFrame, iSANodeIndex)) + return false; + } + + if (IS_FC_WEP(pbyFrame)) { + bool bRxDecryOK = false; + + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "rx WEP pkt\n"); + bIsWEP = true; + if ((pDevice->bEnableHostWEP) && (iSANodeIndex >= 0)) { + pKey = &STempKey; + pKey->byCipherSuite = pMgmt->sNodeDBTable[iSANodeIndex].byCipherSuite; + pKey->dwKeyIndex = pMgmt->sNodeDBTable[iSANodeIndex].dwKeyIndex; + pKey->uKeyLength = pMgmt->sNodeDBTable[iSANodeIndex].uWepKeyLength; + pKey->dwTSC47_16 = pMgmt->sNodeDBTable[iSANodeIndex].dwTSC47_16; + pKey->wTSC15_0 = pMgmt->sNodeDBTable[iSANodeIndex].wTSC15_0; + memcpy(pKey->abyKey, + &pMgmt->sNodeDBTable[iSANodeIndex].abyWepKey[0], + pKey->uKeyLength +); + + bRxDecryOK = s_bHostWepRxEncryption(pDevice, + pbyFrame, + FrameSize, + pbyRsr, + pMgmt->sNodeDBTable[iSANodeIndex].bOnFly, + pKey, + pbyNewRsr, + &bExtIV, + &wRxTSC15_0, + &dwRxTSC47_16); + } else { + bRxDecryOK = s_bHandleRxEncryption(pDevice, + pbyFrame, + FrameSize, + pbyRsr, + pbyNewRsr, + &pKey, + &bExtIV, + &wRxTSC15_0, + &dwRxTSC47_16); + } + + if (bRxDecryOK) { + if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) { + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV Fail\n"); + if ((pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA) || + (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) || + (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) || + (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2) || + (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) { + if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) + pDevice->s802_11Counter.TKIPICVErrors++; + else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP)) + pDevice->s802_11Counter.CCMPDecryptErrors++; + } + return false; + } + } else { + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "WEP Func Fail\n"); + return false; + } + if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP)) + FrameSize -= 8; // Message Integrity Code + else + FrameSize -= 4; // 4 is ICV + } + + // + // RX OK + // + //remove the CRC length + FrameSize -= ETH_FCS_LEN; + + if ((!(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI))) && // unicast address + (IS_FRAGMENT_PKT((skb->data+4))) +) { + // defragment + bDeFragRx = WCTLbHandleFragment(pDevice, (PS802_11Header)(skb->data+4), FrameSize, bIsWEP, bExtIV); + pDevice->s802_11Counter.ReceivedFragmentCount++; + if (bDeFragRx) { + // defrag complete + skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb; + FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength; + + } else { + return false; + } + } + +// Management & Control frame Handle + if ((IS_TYPE_DATA((skb->data+4))) == false) { + // Handle Control & Manage Frame + + if (IS_TYPE_MGMT((skb->data+4))) { + unsigned char *pbyData1; + unsigned char *pbyData2; + + pRxPacket->p80211Header = (PUWLAN_80211HDR)(skb->data+4); + pRxPacket->cbMPDULen = FrameSize; + pRxPacket->uRSSI = *pbyRSSI; + pRxPacket->bySQ = *pbySQ; + HIDWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(HIDWORD(*pqwTSFTime)); + LODWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(LODWORD(*pqwTSFTime)); + if (bIsWEP) { + // strip IV + pbyData1 = WLAN_HDR_A3_DATA_PTR(skb->data+4); + pbyData2 = WLAN_HDR_A3_DATA_PTR(skb->data+4) + 4; + for (ii = 0; ii < (FrameSize - 4); ii++) { + *pbyData1 = *pbyData2; + pbyData1++; + pbyData2++; + } + } + pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate); + pRxPacket->byRxChannel = (*pbyRxSts) >> 2; +//PLICE_DEBUG-> + +#ifdef THREAD + EnQueue(pDevice, pRxPacket); +#else + +#ifdef TASK_LET + EnQueue(pDevice, pRxPacket); + tasklet_schedule(&pDevice->RxMngWorkItem); +#else + vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket); +#endif + +#endif +//PLICE_DEBUG<- + // hostap Deamon handle 802.11 management + if (pDevice->bEnableHostapd) { + skb->dev = pDevice->apdev; + skb->data += 4; + skb->tail += 4; + skb_put(skb, FrameSize); + skb_reset_mac_header(skb); + skb->pkt_type = PACKET_OTHERHOST; + skb->protocol = htons(ETH_P_802_2); + memset(skb->cb, 0, sizeof(skb->cb)); + netif_rx(skb); + return true; + } + } + + return false; + } else { + if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) { + //In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC. + if (!(*pbyRsr & RSR_BSSIDOK)) { + if (bDeFragRx) { + if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) { + DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n", + pDevice->dev->name); + } + } + return false; + } + } else { + // discard DATA packet while not associate || BSSID error + if (!pDevice->bLinkPass || !(*pbyRsr & RSR_BSSIDOK)) { + if (bDeFragRx) { + if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) { + DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n", + pDevice->dev->name); + } + } + return false; + } + //mike add:station mode check eapol-key challenge---> + { + unsigned char Protocol_Version; //802.1x Authentication + unsigned char Packet_Type; //802.1x Authentication + if (bIsWEP) + cbIVOffset = 8; + else + cbIVOffset = 0; + wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) | + skb->data[cbIVOffset + 8 + 24 + 6 + 1]; + Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1]; + Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1 + 1]; + if (wEtherType == ETH_P_PAE) { //Protocol Type in LLC-Header + if (((Protocol_Version == 1) || (Protocol_Version == 2)) && + (Packet_Type == 3)) { //802.1x OR eapol-key challenge frame receive + bRxeapol_key = true; + } + } + } + //mike add:station mode check eapol-key challenge<--- + } + } + +// Data frame Handle + + if (pDevice->bEnablePSMode) { + if (!IS_FC_MOREDATA((skb->data+4))) { + if (pDevice->pMgmt->bInTIMWake == true) + pDevice->pMgmt->bInTIMWake = false; + } + } + + // Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps + if (pDevice->bDiversityEnable && (FrameSize > 50) && + (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) && + pDevice->bLinkPass) { + BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0); + } + + if (pDevice->byLocalID != REV_ID_VT3253_B1) + pDevice->uCurrRSSI = *pbyRSSI; + + pDevice->byCurrSQ = *pbySQ; + + if ((*pbyRSSI != 0) && + (pMgmt->pCurrBSS != NULL)) { + RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm); + // Monitor if RSSI is too strong. + pMgmt->pCurrBSS->byRSSIStatCnt++; + pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT; + pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm; + for (ii = 0; ii < RSSI_STAT_COUNT; ii++) + if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0) + pMgmt->pCurrBSS->ldBmMAX = max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm); + + } + + // ----------------------------------------------- + + if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && pDevice->bEnable8021x) { + unsigned char abyMacHdr[24]; + + // Only 802.1x packet incoming allowed + if (bIsWEP) + cbIVOffset = 8; + else + cbIVOffset = 0; + wEtherType = (skb->data[cbIVOffset + 4 + 24 + 6] << 8) | + skb->data[cbIVOffset + 4 + 24 + 6 + 1]; + + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "wEtherType = %04x \n", wEtherType); + if (wEtherType == ETH_P_PAE) { + skb->dev = pDevice->apdev; + + if (bIsWEP) { + // strip IV header(8) + memcpy(&abyMacHdr[0], (skb->data + 4), 24); + memcpy((skb->data + 4 + cbIVOffset), &abyMacHdr[0], 24); + } + skb->data += (cbIVOffset + 4); + skb->tail += (cbIVOffset + 4); + skb_put(skb, FrameSize); + skb_reset_mac_header(skb); + + skb->pkt_type = PACKET_OTHERHOST; + skb->protocol = htons(ETH_P_802_2); + memset(skb->cb, 0, sizeof(skb->cb)); + netif_rx(skb); + return true; + + } + // check if 802.1x authorized + if (!(pMgmt->sNodeDBTable[iSANodeIndex].dwFlags & WLAN_STA_AUTHORIZED)) + return false; + } + + if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) { + if (bIsWEP) + FrameSize -= 8; //MIC + } + + //-------------------------------------------------------------------------------- + // Soft MIC + if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) { + if (bIsWEP) { + __le32 *pdwMIC_L; + __le32 *pdwMIC_R; + __le32 dwMIC_Priority; + __le32 dwMICKey0 = 0, dwMICKey1 = 0; + u32 dwLocalMIC_L = 0; + u32 dwLocalMIC_R = 0; + viawget_wpa_header *wpahdr; + + if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) { + dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24])); + dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28])); + } else { + if (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) { + dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16])); + dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20])); + } else if ((pKey->dwKeyIndex & BIT28) == 0) { + dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16])); + dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20])); + } else { + dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24])); + dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28])); + } + } + + MIC_vInit(dwMICKey0, dwMICKey1); + MIC_vAppend((unsigned char *)&(pDevice->sRxEthHeader.abyDstAddr[0]), 12); + dwMIC_Priority = 0; + MIC_vAppend((unsigned char *)&dwMIC_Priority, 4); + // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV. + MIC_vAppend((unsigned char *)(skb->data + 4 + WLAN_HDR_ADDR3_LEN + 8), + FrameSize - WLAN_HDR_ADDR3_LEN - 8); + MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R); + MIC_vUnInit(); + + pdwMIC_L = (__le32 *)(skb->data + 4 + FrameSize); + pdwMIC_R = (__le32 *)(skb->data + 4 + FrameSize + 4); + + if ((le32_to_cpu(*pdwMIC_L) != dwLocalMIC_L) || + (le32_to_cpu(*pdwMIC_R) != dwLocalMIC_R) || + pDevice->bRxMICFail) { + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "MIC comparison is fail!\n"); + pDevice->bRxMICFail = false; + pDevice->s802_11Counter.TKIPLocalMICFailures++; + if (bDeFragRx) { + if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) { + DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n", + pDevice->dev->name); + } + } + //2008-0409-07, <Add> by Einsn Liu +#ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT + //send event to wpa_supplicant + { + union iwreq_data wrqu; + struct iw_michaelmicfailure ev; + int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits + memset(&ev, 0, sizeof(ev)); + ev.flags = keyidx & IW_MICFAILURE_KEY_ID; + if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) && + (pMgmt->eCurrState == WMAC_STATE_ASSOC) && + (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) { + ev.flags |= IW_MICFAILURE_PAIRWISE; + } else { + ev.flags |= IW_MICFAILURE_GROUP; + } + + ev.src_addr.sa_family = ARPHRD_ETHER; + memcpy(ev.src_addr.sa_data, pMACHeader->abyAddr2, ETH_ALEN); + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = sizeof(ev); + wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev); + + } +#endif + + if ((pDevice->bWPADEVUp) && (pDevice->skb != NULL)) { + wpahdr = (viawget_wpa_header *)pDevice->skb->data; + if ((pDevice->pMgmt->eCurrMode == WMAC_MODE_ESS_STA) && + (pDevice->pMgmt->eCurrState == WMAC_STATE_ASSOC) && + (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) { + wpahdr->type = VIAWGET_PTK_MIC_MSG; + } else { + wpahdr->type = VIAWGET_GTK_MIC_MSG; + } + wpahdr->resp_ie_len = 0; + wpahdr->req_ie_len = 0; + skb_put(pDevice->skb, sizeof(viawget_wpa_header)); + pDevice->skb->dev = pDevice->wpadev; + skb_reset_mac_header(pDevice->skb); + pDevice->skb->pkt_type = PACKET_HOST; + pDevice->skb->protocol = htons(ETH_P_802_2); + memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb)); + netif_rx(pDevice->skb); + pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz); + } + + return false; + + } + } + } //---end of SOFT MIC----------------------------------------------------------------------- + + // ++++++++++ Reply Counter Check +++++++++++++ + + if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) || + (pKey->byCipherSuite == KEY_CTL_CCMP))) { + if (bIsWEP) { + unsigned short wLocalTSC15_0 = 0; + unsigned long dwLocalTSC47_16 = 0; + unsigned long long RSC = 0; + // endian issues + RSC = *((unsigned long long *)&(pKey->KeyRSC)); + wLocalTSC15_0 = (unsigned short)RSC; + dwLocalTSC47_16 = (unsigned long)(RSC>>16); + + RSC = dwRxTSC47_16; + RSC <<= 16; + RSC += wRxTSC15_0; + memcpy(&(pKey->KeyRSC), &RSC, sizeof(QWORD)); + + if ((pDevice->sMgmtObj.eCurrMode == WMAC_MODE_ESS_STA) && + (pDevice->sMgmtObj.eCurrState == WMAC_STATE_ASSOC)) { + // check RSC + if ((wRxTSC15_0 < wLocalTSC15_0) && + (dwRxTSC47_16 <= dwLocalTSC47_16) && + !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) { + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC is illegal~~!\n "); + if (pKey->byCipherSuite == KEY_CTL_TKIP) + pDevice->s802_11Counter.TKIPReplays++; + else + pDevice->s802_11Counter.CCMPReplays++; + + if (bDeFragRx) { + if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) { + DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n", + pDevice->dev->name); + } + } + return false; + } + } + } + } // ----- End of Reply Counter Check -------------------------- + + s_vProcessRxMACHeader(pDevice, (unsigned char *)(skb->data+4), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset); + FrameSize -= cbHeaderOffset; + cbHeaderOffset += 4; // 4 is Rcv buffer header + + // Null data, framesize = 14 + if (FrameSize < 15) + return false; + + if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) { + if (!s_bAPModeRxData(pDevice, + skb, + FrameSize, + cbHeaderOffset, + iSANodeIndex, + iDANodeIndex +)) { + if (bDeFragRx) { + if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) { + DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n", + pDevice->dev->name); + } + } + return false; + } + } + + skb->data += cbHeaderOffset; + skb->tail += cbHeaderOffset; + skb_put(skb, FrameSize); + skb->protocol = eth_type_trans(skb, skb->dev); + + //drop frame not met IEEE 802.3 + + skb->ip_summed = CHECKSUM_NONE; + pStats->rx_bytes += skb->len; + pStats->rx_packets++; + netif_rx(skb); + + if (bDeFragRx) { + if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) { + DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n", + pDevice->dev->name); + } + return false; + } + + return true; +} + +static bool s_bAPModeRxCtl( + PSDevice pDevice, + unsigned char *pbyFrame, + int iSANodeIndex +) +{ + PS802_11Header p802_11Header; + CMD_STATUS Status; + PSMgmtObject pMgmt = pDevice->pMgmt; + + if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) { + p802_11Header = (PS802_11Header)(pbyFrame); + if (!IS_TYPE_MGMT(pbyFrame)) { + // Data & PS-Poll packet + // check frame class + if (iSANodeIndex > 0) { + // frame class 3 fliter & checking + if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_AUTH) { + // send deauth notification + // reason = (6) class 2 received from nonauth sta + vMgrDeAuthenBeginSta(pDevice, + pMgmt, + (unsigned char *)(p802_11Header->abyAddr2), + (WLAN_MGMT_REASON_CLASS2_NONAUTH), + &Status +); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 1\n"); + return true; + } + if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_ASSOC) { + // send deassoc notification + // reason = (7) class 3 received from nonassoc sta + vMgrDisassocBeginSta(pDevice, + pMgmt, + (unsigned char *)(p802_11Header->abyAddr2), + (WLAN_MGMT_REASON_CLASS3_NONASSOC), + &Status +); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDisassocBeginSta 2\n"); + return true; + } + + if (pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable) { + // delcare received ps-poll event + if (IS_CTL_PSPOLL(pbyFrame)) { + pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true; + bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 1\n"); + } else { + // check Data PS state + // if PW bit off, send out all PS bufferring packets. + if (!IS_FC_POWERMGT(pbyFrame)) { + pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false; + pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true; + bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 2\n"); + } + } + } else { + if (IS_FC_POWERMGT(pbyFrame)) { + pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = true; + // Once if STA in PS state, enable multicast bufferring + pMgmt->sNodeDBTable[0].bPSEnable = true; + } else { + // clear all pending PS frame. + if (pMgmt->sNodeDBTable[iSANodeIndex].wEnQueueCnt > 0) { + pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false; + pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true; + bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 3\n"); + + } + } + } + } else { + vMgrDeAuthenBeginSta(pDevice, + pMgmt, + (unsigned char *)(p802_11Header->abyAddr2), + (WLAN_MGMT_REASON_CLASS2_NONAUTH), + &Status +); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 3\n"); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "BSSID:%pM\n", + p802_11Header->abyAddr3); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR2:%pM\n", + p802_11Header->abyAddr2); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR1:%pM\n", + p802_11Header->abyAddr1); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: wFrameCtl= %x\n", p802_11Header->wFrameCtl); + VNSvInPortB(pDevice->PortOffset + MAC_REG_RCR, &(pDevice->byRxMode)); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc:pDevice->byRxMode = %x\n", pDevice->byRxMode); + return true; + } + } + } + return false; +} + +static bool s_bHandleRxEncryption( + PSDevice pDevice, + unsigned char *pbyFrame, + unsigned int FrameSize, + unsigned char *pbyRsr, + unsigned char *pbyNewRsr, + PSKeyItem *pKeyOut, + bool *pbExtIV, + unsigned short *pwRxTSC15_0, + unsigned long *pdwRxTSC47_16 +) +{ + unsigned int PayloadLen = FrameSize; + unsigned char *pbyIV; + unsigned char byKeyIdx; + PSKeyItem pKey = NULL; + unsigned char byDecMode = KEY_CTL_WEP; + PSMgmtObject pMgmt = pDevice->pMgmt; + + *pwRxTSC15_0 = 0; + *pdwRxTSC47_16 = 0; + + pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN; + if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) && + WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) { + pbyIV += 6; // 6 is 802.11 address4 + PayloadLen -= 6; + } + byKeyIdx = (*(pbyIV+3) & 0xc0); + byKeyIdx >>= 6; + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "\nKeyIdx: %d\n", byKeyIdx); + + if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA) || + (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) || + (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) || + (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) || + (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) { + if (((*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) && + (pDevice->pMgmt->byCSSPK != KEY_CTL_NONE)) { + // unicast pkt use pairwise key + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "unicast pkt\n"); + if (KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, 0xFFFFFFFF, &pKey) == true) { + if (pDevice->pMgmt->byCSSPK == KEY_CTL_TKIP) + byDecMode = KEY_CTL_TKIP; + else if (pDevice->pMgmt->byCSSPK == KEY_CTL_CCMP) + byDecMode = KEY_CTL_CCMP; + } + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "unicast pkt: %d, %p\n", byDecMode, pKey); + } else { + // use group key + KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, byKeyIdx, &pKey); + if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP) + byDecMode = KEY_CTL_TKIP; + else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP) + byDecMode = KEY_CTL_CCMP; + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "group pkt: %d, %d, %p\n", byKeyIdx, byDecMode, pKey); + } + } + // our WEP only support Default Key + if (pKey == NULL) { + // use default group key + KeybGetKey(&(pDevice->sKey), pDevice->abyBroadcastAddr, byKeyIdx, &pKey); + if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP) + byDecMode = KEY_CTL_TKIP; + else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP) + byDecMode = KEY_CTL_CCMP; + } + *pKeyOut = pKey; + + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode); + + if (pKey == NULL) { + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "pKey == NULL\n"); + + return false; + } + if (byDecMode != pKey->byCipherSuite) { + + *pKeyOut = NULL; + return false; + } + if (byDecMode == KEY_CTL_WEP) { + // handle WEP + if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || + (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) { + // Software WEP + // 1. 3253A + // 2. WEP 256 + + PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc + memcpy(pDevice->abyPRNG, pbyIV, 3); + memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength); + rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3); + rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen); + + if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) + *pbyNewRsr |= NEWRSR_DECRYPTOK; + + } + } else if ((byDecMode == KEY_CTL_TKIP) || + (byDecMode == KEY_CTL_CCMP)) { + // TKIP/AES + + PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc + *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4)); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ExtIV: %lx\n", *pdwRxTSC47_16); + if (byDecMode == KEY_CTL_TKIP) + *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV + 2), *pbyIV)); + else + *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV); + + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC0_15: %x\n", *pwRxTSC15_0); + + if ((byDecMode == KEY_CTL_TKIP) && + (pDevice->byLocalID <= REV_ID_VT3253_A1)) { + // Software TKIP + // 1. 3253 A + PS802_11Header pMACHeader = (PS802_11Header)(pbyFrame); + TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG); + rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN); + rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen); + if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) { + *pbyNewRsr |= NEWRSR_DECRYPTOK; + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV OK!\n"); + } else { + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV FAIL!!!\n"); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PayloadLen = %d\n", PayloadLen); + } + } + }// end of TKIP/AES + + if ((*(pbyIV+3) & 0x20) != 0) + *pbExtIV = true; + return true; +} + +static bool s_bHostWepRxEncryption( + PSDevice pDevice, + unsigned char *pbyFrame, + unsigned int FrameSize, + unsigned char *pbyRsr, + bool bOnFly, + PSKeyItem pKey, + unsigned char *pbyNewRsr, + bool *pbExtIV, + unsigned short *pwRxTSC15_0, + unsigned long *pdwRxTSC47_16 +) +{ + unsigned int PayloadLen = FrameSize; + unsigned char *pbyIV; + unsigned char byKeyIdx; + unsigned char byDecMode = KEY_CTL_WEP; + PS802_11Header pMACHeader; + + *pwRxTSC15_0 = 0; + *pdwRxTSC47_16 = 0; + + pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN; + if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) && + WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) { + pbyIV += 6; // 6 is 802.11 address4 + PayloadLen -= 6; + } + byKeyIdx = (*(pbyIV+3) & 0xc0); + byKeyIdx >>= 6; + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "\nKeyIdx: %d\n", byKeyIdx); + + if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP) + byDecMode = KEY_CTL_TKIP; + else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP) + byDecMode = KEY_CTL_CCMP; + + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode); + + if (byDecMode != pKey->byCipherSuite) + return false; + + if (byDecMode == KEY_CTL_WEP) { + // handle WEP + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "byDecMode == KEY_CTL_WEP \n"); + if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || + (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true) || + !bOnFly) { + // Software WEP + // 1. 3253A + // 2. WEP 256 + // 3. NotOnFly + + PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc + memcpy(pDevice->abyPRNG, pbyIV, 3); + memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength); + rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3); + rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen); + + if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) + *pbyNewRsr |= NEWRSR_DECRYPTOK; + + } + } else if ((byDecMode == KEY_CTL_TKIP) || + (byDecMode == KEY_CTL_CCMP)) { + // TKIP/AES + + PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc + *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4)); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ExtIV: %lx\n", *pdwRxTSC47_16); + + if (byDecMode == KEY_CTL_TKIP) + *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV)); + else + *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV); + + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC0_15: %x\n", *pwRxTSC15_0); + + if (byDecMode == KEY_CTL_TKIP) { + if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || !bOnFly) { + // Software TKIP + // 1. 3253 A + // 2. NotOnFly + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "soft KEY_CTL_TKIP \n"); + pMACHeader = (PS802_11Header)(pbyFrame); + TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG); + rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN); + rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen); + if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) { + *pbyNewRsr |= NEWRSR_DECRYPTOK; + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV OK!\n"); + } else { + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV FAIL!!!\n"); + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PayloadLen = %d\n", PayloadLen); + } + } + } + + if (byDecMode == KEY_CTL_CCMP) { + if (!bOnFly) { + // Software CCMP + // NotOnFly + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "soft KEY_CTL_CCMP\n"); + if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) { + *pbyNewRsr |= NEWRSR_DECRYPTOK; + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "CCMP MIC compare OK!\n"); + } else { + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "CCMP MIC fail!\n"); + } + } + } + + }// end of TKIP/AES + + if ((*(pbyIV+3) & 0x20) != 0) + *pbExtIV = true; + return true; +} + +static bool s_bAPModeRxData( + PSDevice pDevice, + struct sk_buff *skb, + unsigned int FrameSize, + unsigned int cbHeaderOffset, + int iSANodeIndex, + int iDANodeIndex +) +{ + PSMgmtObject pMgmt = pDevice->pMgmt; + bool bRelayAndForward = false; + bool bRelayOnly = false; + unsigned char byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80}; + unsigned short wAID; + + struct sk_buff *skbcpy = NULL; + + if (FrameSize > CB_MAX_BUF_SIZE) + return false; + // check DA + if (is_multicast_ether_addr((unsigned char *)(skb->data+cbHeaderOffset))) { + if (pMgmt->sNodeDBTable[0].bPSEnable) { + skbcpy = dev_alloc_skb((int)pDevice->rx_buf_sz); + + // if any node in PS mode, buffer packet until DTIM. + if (skbcpy == NULL) { + DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "relay multicast no skb available \n"); + } else { + skbcpy->dev = pDevice->dev; + skbcpy->len = FrameSize; + memcpy(skbcpy->data, skb->data+cbHeaderOffset, FrameSize); + skb_queue_tail(&(pMgmt->sNodeDBTable[0].sTxPSQueue), skbcpy); + + pMgmt->sNodeDBTable[0].wEnQueueCnt++; + // set tx map + pMgmt->abyPSTxMap[0] |= byMask[0]; + } + } else { + bRelayAndForward = true; + } + } else { + // check if relay + if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(skb->data+cbHeaderOffset), &iDANodeIndex)) { + if (pMgmt->sNodeDBTable[iDANodeIndex].eNodeState >= NODE_ASSOC) { + if (pMgmt->sNodeDBTable[iDANodeIndex].bPSEnable) { + // queue this skb until next PS tx, and then release. + + skb->data += cbHeaderOffset; + skb->tail += cbHeaderOffset; + skb_put(skb, FrameSize); + skb_queue_tail(&pMgmt->sNodeDBTable[iDANodeIndex].sTxPSQueue, skb); + pMgmt->sNodeDBTable[iDANodeIndex].wEnQueueCnt++; + wAID = pMgmt->sNodeDBTable[iDANodeIndex].wAID; + pMgmt->abyPSTxMap[wAID >> 3] |= byMask[wAID & 7]; + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "relay: index= %d, pMgmt->abyPSTxMap[%d]= %d\n", + iDANodeIndex, (wAID >> 3), pMgmt->abyPSTxMap[wAID >> 3]); + return true; + } else { + bRelayOnly = true; + } + } + } + } + + if (bRelayOnly || bRelayAndForward) { + // relay this packet right now + if (bRelayAndForward) + iDANodeIndex = 0; + + if ((pDevice->uAssocCount > 1) && (iDANodeIndex >= 0)) + ROUTEbRelay(pDevice, (unsigned char *)(skb->data + cbHeaderOffset), FrameSize, (unsigned int)iDANodeIndex); + + if (bRelayOnly) + return false; + } + // none associate, don't forward + if (pDevice->uAssocCount == 0) + return false; + + return true; +} |