- 根目录:
- drivers
- staging
- vt6655
- dpc.c
/*
* 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"
#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;
}
//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->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);
}
}
//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;
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;
}
}
}
} // ----- 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])) {
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);
}
}
}// end of TKIP/AES
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");
}
}
}
}// end of TKIP/AES
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;
}