* 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 "rf.h"
-#include "iowpa.h"
-#include "aes_ccmp.h"
#include "dpc.h"
-/*--------------------- Static Definitions -------------------------*/
-
-/*--------------------- Static Classes ----------------------------*/
-
-/*--------------------- Static Variables --------------------------*/
-static 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(struct vnt_private *pDevice, unsigned char *pbyRxBufferAddr,
- unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
- unsigned int *pcbHeadSize);
-
-static bool s_bAPModeRxCtl(
- struct vnt_private *pDevice,
- unsigned char *pbyFrame,
- int iSANodeIndex
-);
-
-static bool s_bAPModeRxData(
- struct vnt_private *pDevice,
- struct sk_buff *skb,
- unsigned int FrameSize,
- unsigned int cbHeaderOffset,
- int iSANodeIndex,
- int iDANodeIndex
-);
-
-static bool s_bHandleRxEncryption(
- struct vnt_private *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(
-
- struct vnt_private *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(struct vnt_private *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;
-}
-
-bool
-device_receive_frame(
- struct vnt_private *pDevice,
- PSRxDesc pCurrRD
-)
-{
- PDEVICE_RD_INFO pRDInfo = pCurrRD->pRDInfo;
- struct net_device_stats *pStats = &pDevice->dev->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;
- __le64 *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;
-
- pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
- pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
-
- 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. */
- pr_debug("---------- 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 = (__le64 *)(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
- */
- pr_debug("---------- WRONG Length 2\n");
- return false;
- }
-
- /* update receive statistic counter */
- STAvUpdateRDStatCounter(&pDevice->scStatistic,
- *pbyRsr,
- *pbyNewRsr,
- *pbyRxRate,
- pbyFrame,
- FrameSize);
-
- pMACHeader = (PS802_11Header)((unsigned char *)(skb->data) + 8);
-
- 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;
-
- pr_debug("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) {
- pr_debug("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 {
- pr_debug("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;
- pRxPacket->qwLocalTSF = le64_to_cpu(*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;
-
- vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
-
- /* 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])) {
- pr_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])) {
- pr_err("%s: can not alloc more frag bufs\n",
- pDevice->dev->name);
- }
- }
- return false;
- }
- {
- 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;
- }
- }
- }
- }
- }
-
-/* 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->op_mode == NL80211_IFTYPE_STATION) &&
- 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];
-
- pr_debug("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) {
- pr_debug("MIC comparison is fail!\n");
- pDevice->bRxMICFail = false;
- pDevice->s802_11Counter.TKIPLocalMICFailures++;
- if (bDeFragRx) {
- if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
- pr_err("%s: can not alloc more frag bufs\n",
- pDevice->dev->name);
- }
- }
-#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;
- ether_addr_copy(ev.src_addr.sa_data,
- pMACHeader->abyAddr2);
- 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;
-
- }
- }
- }
-
- /* ++++++++++ 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;
- pKey->KeyRSC = RSC;
-
- 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))) {
- pr_debug("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])) {
- pr_err("%s: can not alloc more frag bufs\n",
- pDevice->dev->name);
- }
- }
- return false;
- }
- }
- }
- }
-
- 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])) {
- pr_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])) {
- pr_err("%s: can not alloc more frag bufs\n",
- pDevice->dev->name);
- }
- return false;
- }
-
- return true;
-}
-
-static bool s_bAPModeRxCtl(
- struct vnt_private *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
-);
- pr_debug("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
-);
- pr_debug("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);
- pr_debug("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);
- pr_debug("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);
- pr_debug("dpc: WLAN_CMD_RX_PSPOLL 3\n");
-
- }
- }
- }
- } else {
- vMgrDeAuthenBeginSta(pDevice,
- pMgmt,
- (unsigned char *)(p802_11Header->abyAddr2),
- (WLAN_MGMT_REASON_CLASS2_NONAUTH),
- &Status
-);
- pr_debug("dpc: send vMgrDeAuthenBeginSta 3\n");
- pr_debug("BSSID:%pM\n",
- p802_11Header->abyAddr3);
- pr_debug("ADDR2:%pM\n",
- p802_11Header->abyAddr2);
- pr_debug("ADDR1:%pM\n",
- p802_11Header->abyAddr1);
- pr_debug("dpc: wFrameCtl= %x\n",
- p802_11Header->wFrameCtl);
- VNSvInPortB(pDevice->PortOffset + MAC_REG_RCR, &(pDevice->byRxMode));
- pr_debug("dpc:pDevice->byRxMode = %x\n",
- pDevice->byRxMode);
- return true;
- }
- }
- }
- return false;
-}
-
-static bool s_bHandleRxEncryption(
- struct vnt_private *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;
- pr_debug("\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 */
- pr_debug("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;
- }
- pr_debug("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;
- pr_debug("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;
-
- pr_debug("AES:%d %d %d\n",
- pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
-
- if (pKey == NULL) {
- pr_debug("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));
- pr_debug("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);
-
- pr_debug("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;
- pr_debug("ICV OK!\n");
- } else {
- pr_debug("ICV FAIL!!!\n");
- pr_debug("PayloadLen = %d\n", PayloadLen);
- }
- }
- }
-
- if ((*(pbyIV+3) & 0x20) != 0)
- *pbExtIV = true;
- return true;
-}
-
-static bool s_bHostWepRxEncryption(
- struct vnt_private *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;
- pr_debug("\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;
-
- pr_debug("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 */
- pr_debug("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));
- pr_debug("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);
-
- pr_debug("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
- */
- pr_debug("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;
- pr_debug("ICV OK!\n");
- } else {
- pr_debug("ICV FAIL!!!\n");
- pr_debug("PayloadLen = %d\n",
- PayloadLen);
- }
- }
- }
-
- if (byDecMode == KEY_CTL_CCMP) {
- if (!bOnFly) {
- /*
- * Software CCMP
- * NotOnFly
- */
- pr_debug("soft KEY_CTL_CCMP\n");
- if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) {
- *pbyNewRsr |= NEWRSR_DECRYPTOK;
- pr_debug("CCMP MIC compare OK!\n");
- } else {
- pr_debug("CCMP MIC fail!\n");
- }
- }
- }
-
- }
-
- if ((*(pbyIV+3) & 0x20) != 0)
- *pbExtIV = true;
- return true;
-}
-
-static bool s_bAPModeRxData(
- struct vnt_private *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) {
- pr_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];
- pr_debug("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;
-}
-
static bool vnt_rx_data(struct vnt_private *priv, struct sk_buff *skb,
u16 bytes_received)
{
projects / karo-tx-linux.git / commitdiff