| /* |
| * 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_bHandleRxEncryption- Rcv decrypted data via on-fly |
| * s_byGetRateIdx- get rate index |
| * s_vGetDASA- get data offset |
| * s_vProcessRxMACHeader- Rcv 802.11 and translate to 802.3 |
| * |
| * Revision History: |
| * |
| */ |
| |
| #include "dpc.h" |
| #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 "wctl.h" |
| #include "rf.h" |
| #include "iowpa.h" |
| #include "datarate.h" |
| #include "usbpipe.h" |
| |
| //static int msglevel =MSG_LEVEL_DEBUG; |
| static int msglevel =MSG_LEVEL_INFO; |
| |
| static const u8 acbyRxRate[MAX_RATE] = |
| {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108}; |
| |
| static u8 s_byGetRateIdx(u8 byRate); |
| |
| static |
| void |
| s_vGetDASA( |
| u8 * pbyRxBufferAddr, |
| unsigned int *pcbHeaderSize, |
| struct ethhdr *psEthHeader |
| ); |
| |
| static void s_vProcessRxMACHeader(struct vnt_private *pDevice, |
| u8 *pbyRxBufferAddr, u32 cbPacketSize, int bIsWEP, int bExtIV, |
| u32 *pcbHeadSize); |
| |
| static int s_bHandleRxEncryption(struct vnt_private *pDevice, u8 *pbyFrame, |
| u32 FrameSize, u8 *pbyRsr, u8 *pbyNewRsr, PSKeyItem *pKeyOut, |
| s32 *pbExtIV, u16 *pwRxTSC15_0, u32 *pdwRxTSC47_16); |
| |
| /*+ |
| * |
| * 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, |
| u8 *pbyRxBufferAddr, u32 cbPacketSize, int bIsWEP, int bExtIV, |
| u32 *pcbHeadSize) |
| { |
| u8 *pbyRxBuffer; |
| u32 cbHeaderSize = 0; |
| u16 *pwType; |
| struct ieee80211_hdr *pMACHeader; |
| int ii; |
| |
| pMACHeader = (struct ieee80211_hdr *) (pbyRxBufferAddr + cbHeaderSize); |
| |
| s_vGetDASA((u8 *)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 = (u8 *) (pbyRxBufferAddr + cbHeaderSize); |
| if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_Bridgetunnel)) { |
| cbHeaderSize += 6; |
| } else if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_RFC1042)) { |
| cbHeaderSize += 6; |
| pwType = (u16 *) (pbyRxBufferAddr + cbHeaderSize); |
| if ((*pwType == cpu_to_be16(ETH_P_IPX)) || |
| (*pwType == cpu_to_le16(0xF380))) { |
| cbHeaderSize -= 8; |
| pwType = (u16 *) (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 = (u16 *) (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 = (u8 *) (pbyRxBufferAddr + cbHeaderSize); |
| for (ii = 0; ii < ETH_ALEN; ii++) |
| *pbyRxBuffer++ = pDevice->sRxEthHeader.h_dest[ii]; |
| for (ii = 0; ii < ETH_ALEN; ii++) |
| *pbyRxBuffer++ = pDevice->sRxEthHeader.h_source[ii]; |
| |
| *pcbHeadSize = cbHeaderSize; |
| } |
| |
| static u8 s_byGetRateIdx(u8 byRate) |
| { |
| u8 byRateIdx; |
| |
| for (byRateIdx = 0; byRateIdx <MAX_RATE ; byRateIdx++) { |
| if (acbyRxRate[byRateIdx%MAX_RATE] == byRate) |
| return byRateIdx; |
| } |
| return 0; |
| } |
| |
| static |
| void |
| s_vGetDASA ( |
| u8 * pbyRxBufferAddr, |
| unsigned int *pcbHeaderSize, |
| struct ethhdr *psEthHeader |
| ) |
| { |
| unsigned int cbHeaderSize = 0; |
| struct ieee80211_hdr *pMACHeader; |
| int ii; |
| |
| pMACHeader = (struct ieee80211_hdr *) (pbyRxBufferAddr + cbHeaderSize); |
| |
| if ((pMACHeader->frame_control & FC_TODS) == 0) { |
| if (pMACHeader->frame_control & FC_FROMDS) { |
| for (ii = 0; ii < ETH_ALEN; ii++) { |
| psEthHeader->h_dest[ii] = |
| pMACHeader->addr1[ii]; |
| psEthHeader->h_source[ii] = |
| pMACHeader->addr3[ii]; |
| } |
| } else { |
| /* IBSS mode */ |
| for (ii = 0; ii < ETH_ALEN; ii++) { |
| psEthHeader->h_dest[ii] = |
| pMACHeader->addr1[ii]; |
| psEthHeader->h_source[ii] = |
| pMACHeader->addr2[ii]; |
| } |
| } |
| } else { |
| /* Is AP mode.. */ |
| if (pMACHeader->frame_control & FC_FROMDS) { |
| for (ii = 0; ii < ETH_ALEN; ii++) { |
| psEthHeader->h_dest[ii] = |
| pMACHeader->addr3[ii]; |
| psEthHeader->h_source[ii] = |
| pMACHeader->addr4[ii]; |
| cbHeaderSize += 6; |
| } |
| } else { |
| for (ii = 0; ii < ETH_ALEN; ii++) { |
| psEthHeader->h_dest[ii] = |
| pMACHeader->addr3[ii]; |
| psEthHeader->h_source[ii] = |
| pMACHeader->addr2[ii]; |
| } |
| } |
| }; |
| *pcbHeaderSize = cbHeaderSize; |
| } |
| |
| int RXbBulkInProcessData(struct vnt_private *pDevice, struct vnt_rcb *pRCB, |
| unsigned long BytesToIndicate) |
| { |
| struct net_device_stats *pStats = &pDevice->stats; |
| struct sk_buff *skb; |
| struct vnt_manager *pMgmt = &pDevice->vnt_mgmt; |
| struct vnt_rx_mgmt *pRxPacket = &pMgmt->sRxPacket; |
| struct ieee80211_hdr *p802_11Header; |
| u8 *pbyRsr, *pbyNewRsr, *pbyRSSI, *pbyFrame; |
| u64 *pqwTSFTime; |
| u32 bDeFragRx = false; |
| u32 cbHeaderOffset, cbIVOffset; |
| u32 FrameSize; |
| u16 wEtherType = 0; |
| s32 iSANodeIndex = -1; |
| int ii; |
| u8 *pbyRxSts, *pbyRxRate, *pbySQ, *pby3SQ; |
| u32 cbHeaderSize; |
| PSKeyItem pKey = NULL; |
| u16 wRxTSC15_0 = 0; |
| u32 dwRxTSC47_16 = 0; |
| /* signed long ldBm = 0; */ |
| int bIsWEP = false; int bExtIV = false; |
| u32 dwWbkStatus; |
| struct vnt_rcb *pRCBIndicate = pRCB; |
| u8 *pbyDAddress; |
| u16 *pwPLCP_Length; |
| u8 abyVaildRate[MAX_RATE] |
| = {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108}; |
| u16 wPLCPwithPadding; |
| struct ieee80211_hdr *pMACHeader; |
| int bRxeapol_key = false; |
| |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---------- RXbBulkInProcessData---\n"); |
| |
| skb = pRCB->skb; |
| |
| /* [31:16]RcvByteCount ( not include 4-byte Status ) */ |
| dwWbkStatus = *((u32 *)(skb->data)); |
| FrameSize = dwWbkStatus >> 16; |
| FrameSize += 4; |
| |
| if (BytesToIndicate != FrameSize) { |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"------- WRONG Length 1\n"); |
| pStats->rx_frame_errors++; |
| return false; |
| } |
| |
| if ((BytesToIndicate > 2372) || (BytesToIndicate <= 40)) { |
| // Frame Size error drop this packet. |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 2\n"); |
| pStats->rx_frame_errors++; |
| return false; |
| } |
| |
| pbyDAddress = (u8 *)(skb->data); |
| pbyRxSts = pbyDAddress+4; |
| pbyRxRate = pbyDAddress+5; |
| |
| //real Frame Size = USBFrameSize -4WbkStatus - 4RxStatus - 8TSF - 4RSR - 4SQ3 - ?Padding |
| //if SQ3 the range is 24~27, if no SQ3 the range is 20~23 |
| //real Frame size in PLCPLength field. |
| pwPLCP_Length = (u16 *) (pbyDAddress + 6); |
| //Fix hardware bug => PLCP_Length error |
| if ( ((BytesToIndicate - (*pwPLCP_Length)) > 27) || |
| ((BytesToIndicate - (*pwPLCP_Length)) < 24) || |
| (BytesToIndicate < (*pwPLCP_Length)) ) { |
| |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Wrong PLCP Length %x\n", (int) *pwPLCP_Length); |
| pStats->rx_frame_errors++; |
| return false; |
| } |
| for ( ii=RATE_1M;ii<MAX_RATE;ii++) { |
| if ( *pbyRxRate == abyVaildRate[ii] ) { |
| break; |
| } |
| } |
| if ( ii==MAX_RATE ) { |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Wrong RxRate %x\n",(int) *pbyRxRate); |
| return false; |
| } |
| |
| wPLCPwithPadding = ( (*pwPLCP_Length / 4) + ( (*pwPLCP_Length % 4) ? 1:0 ) ) *4; |
| |
| pqwTSFTime = (u64 *)(pbyDAddress + 8 + wPLCPwithPadding); |
| if(pDevice->byBBType == BB_TYPE_11G) { |
| pby3SQ = pbyDAddress + 8 + wPLCPwithPadding + 12; |
| pbySQ = pby3SQ; |
| } |
| else { |
| pbySQ = pbyDAddress + 8 + wPLCPwithPadding + 8; |
| pby3SQ = pbySQ; |
| } |
| pbyNewRsr = pbyDAddress + 8 + wPLCPwithPadding + 9; |
| pbyRSSI = pbyDAddress + 8 + wPLCPwithPadding + 10; |
| pbyRsr = pbyDAddress + 8 + wPLCPwithPadding + 11; |
| |
| FrameSize = *pwPLCP_Length; |
| |
| pbyFrame = pbyDAddress + 8; |
| |
| pMACHeader = (struct ieee80211_hdr *) pbyFrame; |
| |
| //mike add: to judge if current AP is activated? |
| if ((pMgmt->eCurrMode == WMAC_MODE_STANDBY) || |
| (pMgmt->eCurrMode == WMAC_MODE_ESS_STA)) { |
| if (pMgmt->sNodeDBTable[0].bActive) { |
| if (ether_addr_equal(pMgmt->abyCurrBSSID, pMACHeader->addr2)) { |
| if (pMgmt->sNodeDBTable[0].uInActiveCount != 0) |
| pMgmt->sNodeDBTable[0].uInActiveCount = 0; |
| } |
| } |
| } |
| |
| if (!is_multicast_ether_addr(pMACHeader->addr1)) { |
| if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (struct ieee80211_hdr *) pbyFrame)) { |
| return false; |
| } |
| |
| if (!ether_addr_equal(pDevice->abyCurrentNetAddr, pMACHeader->addr1)) { |
| return false; |
| } |
| } |
| |
| // Use for TKIP MIC |
| s_vGetDASA(pbyFrame, &cbHeaderSize, &pDevice->sRxEthHeader); |
| |
| if (ether_addr_equal((u8 *)pDevice->sRxEthHeader.h_source, |
| 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 = (struct ieee80211_hdr *) (pbyFrame); |
| // get SA NodeIndex |
| if (BSSbIsSTAInNodeDB(pDevice, (u8 *)(p802_11Header->addr2), &iSANodeIndex)) { |
| pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies; |
| pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0; |
| } |
| } |
| } |
| |
| if (IS_FC_WEP(pbyFrame)) { |
| bool bRxDecryOK = false; |
| |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"rx WEP pkt\n"); |
| bIsWEP = true; |
| |
| 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 ( (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)) { |
| } |
| 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 FCS/CRC length */ |
| FrameSize -= ETH_FCS_LEN; |
| |
| if ( !(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) && // unicast address |
| (IS_FRAGMENT_PKT((pbyFrame))) |
| ) { |
| // defragment |
| bDeFragRx = WCTLbHandleFragment(pDevice, (struct ieee80211_hdr *) (pbyFrame), FrameSize, bIsWEP, bExtIV); |
| if (bDeFragRx) { |
| // defrag complete |
| // TODO skb, pbyFrame |
| skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb; |
| FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength; |
| pbyFrame = skb->data + 8; |
| } |
| else { |
| return false; |
| } |
| } |
| |
| // |
| // Management & Control frame Handle |
| // |
| if ((IS_TYPE_DATA((pbyFrame))) == false) { |
| // Handle Control & Manage Frame |
| |
| if (IS_TYPE_MGMT((pbyFrame))) { |
| u8 * pbyData1; |
| u8 * pbyData2; |
| |
| pRxPacket = &(pRCB->sMngPacket); |
| pRxPacket->p80211Header = (PUWLAN_80211HDR)(pbyFrame); |
| pRxPacket->cbMPDULen = FrameSize; |
| pRxPacket->uRSSI = *pbyRSSI; |
| pRxPacket->bySQ = *pbySQ; |
| pRxPacket->qwLocalTSF = cpu_to_le64(*pqwTSFTime); |
| if (bIsWEP) { |
| // strip IV |
| pbyData1 = WLAN_HDR_A3_DATA_PTR(pbyFrame); |
| pbyData2 = WLAN_HDR_A3_DATA_PTR(pbyFrame) + 4; |
| for (ii = 0; ii < (FrameSize - 4); ii++) { |
| *pbyData1 = *pbyData2; |
| pbyData1++; |
| pbyData2++; |
| } |
| } |
| |
| pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate); |
| |
| if ( *pbyRxSts == 0 ) { |
| //Discard beacon packet which channel is 0 |
| if ( (WLAN_GET_FC_FSTYPE((pRxPacket->p80211Header->sA3.wFrameCtl)) == WLAN_FSTYPE_BEACON) || |
| (WLAN_GET_FC_FSTYPE((pRxPacket->p80211Header->sA3.wFrameCtl)) == WLAN_FSTYPE_PROBERESP) ) { |
| return false; |
| } |
| } |
| pRxPacket->byRxChannel = (*pbyRxSts) >> 2; |
| |
| // |
| // Insert the RCB in the Recv Mng list |
| // |
| EnqueueRCB(pDevice->FirstRecvMngList, pDevice->LastRecvMngList, pRCBIndicate); |
| pDevice->NumRecvMngList++; |
| if ( bDeFragRx == false) { |
| pRCB->Ref++; |
| } |
| if (pDevice->bIsRxMngWorkItemQueued == false) { |
| pDevice->bIsRxMngWorkItemQueued = true; |
| schedule_work(&pDevice->rx_mng_work_item); |
| } |
| |
| } |
| else { |
| // Control Frame |
| }; |
| 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 == false) || |
| !(*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---> |
| { |
| u8 Protocol_Version; //802.1x Authentication |
| u8 Packet_Type; //802.1x Authentication |
| u8 Descriptor_type; |
| u16 Key_info; |
| 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; |
| Descriptor_type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1+1+2]; |
| Key_info = (skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1+1+2+1]<<8) |skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1+1+2+2] ; |
| if(Descriptor_type==2) { //RSN |
| // printk("WPA2_Rx_eapol-key_info<-----:%x\n",Key_info); |
| } |
| else if(Descriptor_type==254) { |
| // printk("WPA_Rx_eapol-key_info<-----:%x\n",Key_info); |
| } |
| } |
| } |
| } |
| //mike add:station mode check eapol-key challenge<--- |
| } |
| } |
| |
| // Data frame Handle |
| |
| if (pDevice->bEnablePSMode) { |
| if (IS_FC_MOREDATA((pbyFrame))) { |
| if (*pbyRsr & RSR_ADDROK) { |
| //PSbSendPSPOLL((PSDevice)pDevice); |
| } |
| } |
| else { |
| if (pMgmt->bInTIMWake == true) { |
| pMgmt->bInTIMWake = false; |
| } |
| } |
| } |
| |
| // ++++++++ For BaseBand Algorithm +++++++++++++++ |
| pDevice->uCurrRSSI = *pbyRSSI; |
| pDevice->byCurrSQ = *pbySQ; |
| |
| // todo |
| /* |
| 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 ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) { |
| if (bIsWEP) { |
| FrameSize -= 8; //MIC |
| } |
| } |
| |
| //-------------------------------------------------------------------------------- |
| // Soft MIC |
| if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) { |
| if (bIsWEP) { |
| u32 * pdwMIC_L; |
| u32 * pdwMIC_R; |
| u32 dwMIC_Priority; |
| u32 dwMICKey0 = 0, dwMICKey1 = 0; |
| u32 dwLocalMIC_L = 0; |
| u32 dwLocalMIC_R = 0; |
| |
| 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 (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((u8 *)&(pDevice->sRxEthHeader.h_dest[0]), 12); |
| dwMIC_Priority = 0; |
| MIC_vAppend((u8 *)&dwMIC_Priority, 4); |
| // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV. |
| MIC_vAppend((u8 *)(skb->data + 8 + WLAN_HDR_ADDR3_LEN + 8), |
| FrameSize - WLAN_HDR_ADDR3_LEN - 8); |
| MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R); |
| MIC_vUnInit(); |
| |
| pdwMIC_L = (u32 *)(skb->data + 8 + FrameSize); |
| pdwMIC_R = (u32 *)(skb->data + 8 + FrameSize + 4); |
| |
| if ((cpu_to_le32(*pdwMIC_L) != dwLocalMIC_L) || (cpu_to_le32(*pdwMIC_R) != dwLocalMIC_R) || |
| (pDevice->bRxMICFail == true)) { |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"MIC comparison is fail!\n"); |
| pDevice->bRxMICFail = false; |
| 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); |
| } |
| } |
| //send event to wpa_supplicant |
| //if(pDevice->bWPASuppWextEnabled == true) |
| { |
| 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->addr2, ETH_ALEN); |
| memset(&wrqu, 0, sizeof(wrqu)); |
| wrqu.data.length = sizeof(ev); |
| PRINT_K("wireless_send_event--->IWEVMICHAELMICFAILURE\n"); |
| wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev); |
| |
| } |
| |
| return false; |
| |
| } |
| } |
| } //---end of SOFT MIC----------------------------------------------------------------------- |
| |
| // ++++++++++ Reply Counter Check +++++++++++++ |
| |
| if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) || |
| (pKey->byCipherSuite == KEY_CTL_CCMP))) { |
| if (bIsWEP) { |
| u16 wLocalTSC15_0 = 0; |
| u32 dwLocalTSC47_16 = 0; |
| unsigned long long RSC = 0; |
| // endian issues |
| RSC = *((unsigned long long *) &(pKey->KeyRSC)); |
| wLocalTSC15_0 = (u16) RSC; |
| dwLocalTSC47_16 = (u32) (RSC>>16); |
| |
| RSC = dwRxTSC47_16; |
| RSC <<= 16; |
| RSC += wRxTSC15_0; |
| memcpy(&(pKey->KeyRSC), &RSC, sizeof(u64)); |
| |
| if (pDevice->vnt_mgmt.eCurrMode == WMAC_MODE_ESS_STA && |
| pDevice->vnt_mgmt.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 (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, (u8 *)(skb->data+8), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset); |
| FrameSize -= cbHeaderOffset; |
| cbHeaderOffset += 8; // 8 is Rcv buffer header |
| |
| // Null data, framesize = 12 |
| if (FrameSize < 12) |
| return false; |
| |
| skb->data += cbHeaderOffset; |
| skb->tail += cbHeaderOffset; |
| skb_put(skb, FrameSize); |
| skb->protocol=eth_type_trans(skb, skb->dev); |
| 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 int s_bHandleRxEncryption(struct vnt_private *pDevice, u8 *pbyFrame, |
| u32 FrameSize, u8 *pbyRsr, u8 *pbyNewRsr, PSKeyItem *pKeyOut, |
| s32 *pbExtIV, u16 *pwRxTSC15_0, u32 *pdwRxTSC47_16) |
| { |
| struct vnt_manager *pMgmt = &pDevice->vnt_mgmt; |
| u32 PayloadLen = FrameSize; |
| u8 *pbyIV; |
| u8 byKeyIdx; |
| PSKeyItem pKey = NULL; |
| u8 byDecMode = KEY_CTL_WEP; |
| |
| *pwRxTSC15_0 = 0; |
| *pdwRxTSC47_16 = 0; |
| |
| pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN; |
| if ( WLAN_GET_FC_TODS(*(u16 *)pbyFrame) && |
| WLAN_GET_FC_FROMDS(*(u16 *)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) && |
| (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 (pMgmt->byCSSPK == KEY_CTL_TKIP) |
| byDecMode = KEY_CTL_TKIP; |
| else if (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 (pMgmt->byCSSGK == KEY_CTL_TKIP) |
| byDecMode = KEY_CTL_TKIP; |
| else if (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 (pMgmt->byCSSGK == KEY_CTL_TKIP) |
| byDecMode = KEY_CTL_TKIP; |
| else if (pMgmt->byCSSGK == KEY_CTL_CCMP) |
| byDecMode = KEY_CTL_CCMP; |
| } |
| *pKeyOut = pKey; |
| |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"AES:%d %d %d\n", pMgmt->byCSSPK, 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(*(u32 *)(pbyIV + 4)); |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ExtIV: %x\n", *pdwRxTSC47_16); |
| if (byDecMode == KEY_CTL_TKIP) { |
| *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV)); |
| } else { |
| *pwRxTSC15_0 = cpu_to_le16(*(u16 *)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 |
| struct ieee80211_hdr *pMACHeader = (struct ieee80211_hdr *) (pbyFrame); |
| TKIPvMixKey(pKey->abyKey, pMACHeader->addr2, *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; |
| } |
| |
| void RXvWorkItem(struct work_struct *work) |
| { |
| struct vnt_private *priv = |
| container_of(work, struct vnt_private, read_work_item); |
| int status; |
| struct vnt_rcb *rcb = NULL; |
| unsigned long flags; |
| |
| if (priv->Flags & fMP_DISCONNECTED) |
| return; |
| |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Rx Polling Thread\n"); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| while ((priv->Flags & fMP_POST_READS) && MP_IS_READY(priv) && |
| (priv->NumRecvFreeList != 0)) { |
| rcb = priv->FirstRecvFreeList; |
| |
| priv->NumRecvFreeList--; |
| |
| DequeueRCB(priv->FirstRecvFreeList, priv->LastRecvFreeList); |
| |
| status = PIPEnsBulkInUsbRead(priv, rcb); |
| } |
| |
| priv->bIsRxWorkItemQueued = false; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| void RXvFreeRCB(struct vnt_rcb *rcb, int re_alloc_skb) |
| { |
| struct vnt_private *priv = rcb->pDevice; |
| |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->RXvFreeRCB\n"); |
| |
| if (re_alloc_skb == false) { |
| kfree_skb(rcb->skb); |
| re_alloc_skb = true; |
| } |
| |
| if (re_alloc_skb == true) { |
| rcb->skb = netdev_alloc_skb(priv->dev, priv->rx_buf_sz); |
| /* TODO error handling */ |
| if (!rcb->skb) { |
| DBG_PRT(MSG_LEVEL_ERR, KERN_ERR |
| " Failed to re-alloc rx skb\n"); |
| } |
| } |
| |
| /* Insert the RCB back in the Recv free list */ |
| EnqueueRCB(priv->FirstRecvFreeList, priv->LastRecvFreeList, rcb); |
| priv->NumRecvFreeList++; |
| |
| if ((priv->Flags & fMP_POST_READS) && MP_IS_READY(priv) && |
| (priv->bIsRxWorkItemQueued == false)) { |
| priv->bIsRxWorkItemQueued = true; |
| schedule_work(&priv->read_work_item); |
| } |
| |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"<----RXFreeRCB %d %d\n", |
| priv->NumRecvFreeList, priv->NumRecvMngList); |
| } |
| |
| void RXvMngWorkItem(struct work_struct *work) |
| { |
| struct vnt_private *pDevice = |
| container_of(work, struct vnt_private, rx_mng_work_item); |
| struct vnt_rcb *pRCB = NULL; |
| struct vnt_rx_mgmt *pRxPacket; |
| int bReAllocSkb = false; |
| unsigned long flags; |
| |
| if (pDevice->Flags & fMP_DISCONNECTED) |
| return; |
| |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Rx Mng Thread\n"); |
| |
| while (pDevice->NumRecvMngList!=0) |
| { |
| spin_lock_irqsave(&pDevice->lock, flags); |
| |
| pRCB = pDevice->FirstRecvMngList; |
| pDevice->NumRecvMngList--; |
| DequeueRCB(pDevice->FirstRecvMngList, pDevice->LastRecvMngList); |
| |
| spin_unlock_irqrestore(&pDevice->lock, flags); |
| |
| if(!pRCB){ |
| break; |
| } |
| pRxPacket = &(pRCB->sMngPacket); |
| vMgrRxManagePacket(pDevice, &pDevice->vnt_mgmt, pRxPacket); |
| pRCB->Ref--; |
| if (pRCB->Ref == 0) { |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"RxvFreeMng %d %d\n", |
| pDevice->NumRecvFreeList, pDevice->NumRecvMngList); |
| |
| spin_lock_irqsave(&pDevice->lock, flags); |
| |
| RXvFreeRCB(pRCB, bReAllocSkb); |
| |
| spin_unlock_irqrestore(&pDevice->lock, flags); |
| } else { |
| DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Rx Mng Only we have the right to free RCB\n"); |
| } |
| } |
| |
| pDevice->bIsRxMngWorkItemQueued = false; |
| } |
| |
