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1/*
2 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * File: dpc.c
20 *
21 * Purpose: handle dpc rx functions
22 *
23 * Author: Lyndon Chen
24 *
25 * Date: May 20, 2003
26 *
27 * Functions:
28 *      device_receive_frame - Rcv 802.11 frame function
29 *      s_bAPModeRxCtl- AP Rcv frame filer Ctl.
30 *      s_bAPModeRxData- AP Rcv data frame handle
31 *      s_bHandleRxEncryption- Rcv decrypted data via on-fly
32 *      s_bHostWepRxEncryption- Rcv encrypted data via host
33 *      s_byGetRateIdx- get rate index
34 *      s_vGetDASA- get data offset
35 *      s_vProcessRxMACHeader- Rcv 802.11 and translate to 802.3
36 *
37 * Revision History:
38 *
39 */
40
41#include "device.h"
42#include "rxtx.h"
43#include "tether.h"
44#include "card.h"
45#include "bssdb.h"
46#include "mac.h"
47#include "baseband.h"
48#include "michael.h"
49#include "tkip.h"
50#include "tcrc.h"
51#include "wctl.h"
52#include "wroute.h"
53#include "hostap.h"
54#include "rf.h"
55#include "iowpa.h"
56#include "aes_ccmp.h"
57#include "dpc.h"
58
59/*---------------------  Static Definitions -------------------------*/
60
61/*---------------------  Static Classes  ----------------------------*/
62
63/*---------------------  Static Variables  --------------------------*/
64static const unsigned char acbyRxRate[MAX_RATE] =
65{2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
66
67/*---------------------  Static Functions  --------------------------*/
68
69/*---------------------  Static Definitions -------------------------*/
70
71/*---------------------  Static Functions  --------------------------*/
72
73static unsigned char s_byGetRateIdx(unsigned char byRate);
74
75static void
76s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize,
77	   PSEthernetHeader psEthHeader);
78
79static void
80s_vProcessRxMACHeader(struct vnt_private *pDevice, unsigned char *pbyRxBufferAddr,
81		      unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
82		      unsigned int *pcbHeadSize);
83
84static bool s_bAPModeRxCtl(
85	struct vnt_private *pDevice,
86	unsigned char *pbyFrame,
87	int      iSANodeIndex
88);
89
90static bool s_bAPModeRxData(
91	struct vnt_private *pDevice,
92	struct sk_buff *skb,
93	unsigned int FrameSize,
94	unsigned int cbHeaderOffset,
95	int      iSANodeIndex,
96	int      iDANodeIndex
97);
98
99static bool s_bHandleRxEncryption(
100	struct vnt_private *pDevice,
101	unsigned char *pbyFrame,
102	unsigned int FrameSize,
103	unsigned char *pbyRsr,
104	unsigned char *pbyNewRsr,
105	PSKeyItem   *pKeyOut,
106	bool *pbExtIV,
107	unsigned short *pwRxTSC15_0,
108	unsigned long *pdwRxTSC47_16
109);
110
111static bool s_bHostWepRxEncryption(
112
113	struct vnt_private *pDevice,
114	unsigned char *pbyFrame,
115	unsigned int FrameSize,
116	unsigned char *pbyRsr,
117	bool bOnFly,
118	PSKeyItem    pKey,
119	unsigned char *pbyNewRsr,
120	bool *pbExtIV,
121	unsigned short *pwRxTSC15_0,
122	unsigned long *pdwRxTSC47_16
123
124);
125
126/*---------------------  Export Variables  --------------------------*/
127
128/*+
129 *
130 * Description:
131 *    Translate Rcv 802.11 header to 802.3 header with Rx buffer
132 *
133 * Parameters:
134 *  In:
135 *      pDevice
136 *      dwRxBufferAddr  - Address of Rcv Buffer
137 *      cbPacketSize    - Rcv Packet size
138 *      bIsWEP          - If Rcv with WEP
139 *  Out:
140 *      pcbHeaderSize   - 802.11 header size
141 *
142 * Return Value: None
143 *
144 -*/
145static void
146s_vProcessRxMACHeader(struct vnt_private *pDevice,
147		      unsigned char *pbyRxBufferAddr,
148		      unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
149		      unsigned int *pcbHeadSize)
150{
151	unsigned char *pbyRxBuffer;
152	unsigned int cbHeaderSize = 0;
153	unsigned short *pwType;
154	PS802_11Header  pMACHeader;
155	int             ii;
156
157	pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize);
158
159	s_vGetDASA((unsigned char *)pMACHeader, &cbHeaderSize, &pDevice->sRxEthHeader);
160
161	if (bIsWEP) {
162		if (bExtIV) {
163			// strip IV&ExtIV , add 8 byte
164			cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 8);
165		} else {
166			// strip IV , add 4 byte
167			cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 4);
168		}
169	} else {
170		cbHeaderSize += WLAN_HDR_ADDR3_LEN;
171	}
172
173	pbyRxBuffer = (unsigned char *)(pbyRxBufferAddr + cbHeaderSize);
174	if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_Bridgetunnel)) {
175		cbHeaderSize += 6;
176	} else if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_RFC1042)) {
177		cbHeaderSize += 6;
178		pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize);
179		if ((*pwType != TYPE_PKT_IPX) && (*pwType != cpu_to_le16(0xF380))) {
180		} else {
181			cbHeaderSize -= 8;
182			pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize);
183			if (bIsWEP) {
184				if (bExtIV)
185					*pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8);    // 8 is IV&ExtIV
186				else
187					*pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4);    // 4 is IV
188
189			} else {
190				*pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
191			}
192		}
193	} else {
194		cbHeaderSize -= 2;
195		pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize);
196		if (bIsWEP) {
197			if (bExtIV)
198				*pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8);    // 8 is IV&ExtIV
199			else
200				*pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4);    // 4 is IV
201
202		} else {
203			*pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
204		}
205	}
206
207	cbHeaderSize -= (ETH_ALEN * 2);
208	pbyRxBuffer = (unsigned char *)(pbyRxBufferAddr + cbHeaderSize);
209	for (ii = 0; ii < ETH_ALEN; ii++)
210		*pbyRxBuffer++ = pDevice->sRxEthHeader.abyDstAddr[ii];
211	for (ii = 0; ii < ETH_ALEN; ii++)
212		*pbyRxBuffer++ = pDevice->sRxEthHeader.abySrcAddr[ii];
213
214	*pcbHeadSize = cbHeaderSize;
215}
216
217static unsigned char s_byGetRateIdx(unsigned char byRate)
218{
219	unsigned char byRateIdx;
220
221	for (byRateIdx = 0; byRateIdx < MAX_RATE; byRateIdx++) {
222		if (acbyRxRate[byRateIdx % MAX_RATE] == byRate)
223			return byRateIdx;
224	}
225
226	return 0;
227}
228
229static void
230s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize,
231	   PSEthernetHeader psEthHeader)
232{
233	unsigned int cbHeaderSize = 0;
234	PS802_11Header  pMACHeader;
235	int             ii;
236
237	pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize);
238
239	if ((pMACHeader->wFrameCtl & FC_TODS) == 0) {
240		if (pMACHeader->wFrameCtl & FC_FROMDS) {
241			for (ii = 0; ii < ETH_ALEN; ii++) {
242				psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii];
243				psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr3[ii];
244			}
245		} else {
246			// IBSS mode
247			for (ii = 0; ii < ETH_ALEN; ii++) {
248				psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii];
249				psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii];
250			}
251		}
252	} else {
253		// Is AP mode..
254		if (pMACHeader->wFrameCtl & FC_FROMDS) {
255			for (ii = 0; ii < ETH_ALEN; ii++) {
256				psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii];
257				psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr4[ii];
258				cbHeaderSize += 6;
259			}
260		} else {
261			for (ii = 0; ii < ETH_ALEN; ii++) {
262				psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii];
263				psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii];
264			}
265		}
266	}
267	*pcbHeaderSize = cbHeaderSize;
268}
269
270bool
271device_receive_frame(
272	struct vnt_private *pDevice,
273	PSRxDesc pCurrRD
274)
275{
276	PDEVICE_RD_INFO  pRDInfo = pCurrRD->pRDInfo;
277	struct net_device_stats *pStats = &pDevice->dev->stats;
278	struct sk_buff *skb;
279	PSMgmtObject    pMgmt = pDevice->pMgmt;
280	PSRxMgmtPacket  pRxPacket = &(pDevice->pMgmt->sRxPacket);
281	PS802_11Header  p802_11Header;
282	unsigned char *pbyRsr;
283	unsigned char *pbyNewRsr;
284	unsigned char *pbyRSSI;
285	__le64 *pqwTSFTime;
286	unsigned short *pwFrameSize;
287	unsigned char *pbyFrame;
288	bool bDeFragRx = false;
289	bool bIsWEP = false;
290	unsigned int cbHeaderOffset;
291	unsigned int FrameSize;
292	unsigned short wEtherType = 0;
293	int             iSANodeIndex = -1;
294	int             iDANodeIndex = -1;
295	unsigned int ii;
296	unsigned int cbIVOffset;
297	bool bExtIV = false;
298	unsigned char *pbyRxSts;
299	unsigned char *pbyRxRate;
300	unsigned char *pbySQ;
301	unsigned int cbHeaderSize;
302	PSKeyItem       pKey = NULL;
303	unsigned short wRxTSC15_0 = 0;
304	unsigned long dwRxTSC47_16 = 0;
305	SKeyItem        STempKey;
306	// 802.11h RPI
307	unsigned long dwDuration = 0;
308	long            ldBm = 0;
309	long            ldBmThreshold = 0;
310	PS802_11Header pMACHeader;
311	bool bRxeapol_key = false;
312
313	skb = pRDInfo->skb;
314
315	pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
316			 pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
317
318	pwFrameSize = (unsigned short *)(skb->data + 2);
319	FrameSize = cpu_to_le16(pCurrRD->m_rd1RD1.wReqCount) - cpu_to_le16(pCurrRD->m_rd0RD0.wResCount);
320
321	// Max: 2312Payload + 30HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
322	// Min (ACK): 10HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
323	if ((FrameSize > 2364) || (FrameSize <= 32)) {
324		// Frame Size error drop this packet.
325		pr_debug("---------- WRONG Length 1\n");
326		return false;
327	}
328
329	pbyRxSts = (unsigned char *)(skb->data);
330	pbyRxRate = (unsigned char *)(skb->data + 1);
331	pbyRsr = (unsigned char *)(skb->data + FrameSize - 1);
332	pbyRSSI = (unsigned char *)(skb->data + FrameSize - 2);
333	pbyNewRsr = (unsigned char *)(skb->data + FrameSize - 3);
334	pbySQ = (unsigned char *)(skb->data + FrameSize - 4);
335	pqwTSFTime = (__le64 *)(skb->data + FrameSize - 12);
336	pbyFrame = (unsigned char *)(skb->data + 4);
337
338	// get packet size
339	FrameSize = cpu_to_le16(*pwFrameSize);
340
341	if ((FrameSize > 2346)|(FrameSize < 14)) { // Max: 2312Payload + 30HD +4CRC
342		// Min: 14 bytes ACK
343		pr_debug("---------- WRONG Length 2\n");
344		return false;
345	}
346
347	// update receive statistic counter
348	STAvUpdateRDStatCounter(&pDevice->scStatistic,
349				*pbyRsr,
350				*pbyNewRsr,
351				*pbyRxRate,
352				pbyFrame,
353				FrameSize);
354
355	pMACHeader = (PS802_11Header)((unsigned char *)(skb->data) + 8);
356
357	if (pDevice->bMeasureInProgress) {
358		if ((*pbyRsr & RSR_CRCOK) != 0)
359			pDevice->byBasicMap |= 0x01;
360
361		dwDuration = (FrameSize << 4);
362		dwDuration /= acbyRxRate[*pbyRxRate%MAX_RATE];
363		if (*pbyRxRate <= RATE_11M) {
364			if (*pbyRxSts & 0x01) {
365				// long preamble
366				dwDuration += 192;
367			} else {
368				// short preamble
369				dwDuration += 96;
370			}
371		} else {
372			dwDuration += 16;
373		}
374		RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
375		ldBmThreshold = -57;
376		for (ii = 7; ii > 0;) {
377			if (ldBm > ldBmThreshold)
378				break;
379
380			ldBmThreshold -= 5;
381			ii--;
382		}
383		pDevice->dwRPIs[ii] += dwDuration;
384		return false;
385	}
386
387	if (!is_multicast_ether_addr(pbyFrame)) {
388		if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (PS802_11Header)(skb->data + 4))) {
389			pDevice->s802_11Counter.FrameDuplicateCount++;
390			return false;
391		}
392	}
393
394	// Use for TKIP MIC
395	s_vGetDASA(skb->data+4, &cbHeaderSize, &pDevice->sRxEthHeader);
396
397	// filter packet send from myself
398	if (ether_addr_equal(pDevice->sRxEthHeader.abySrcAddr,
399			     pDevice->abyCurrentNetAddr))
400		return false;
401
402	if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) {
403		if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
404			p802_11Header = (PS802_11Header)(pbyFrame);
405			// get SA NodeIndex
406			if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(p802_11Header->abyAddr2), &iSANodeIndex)) {
407				pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies;
408				pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0;
409			}
410		}
411	}
412
413	if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
414		if (s_bAPModeRxCtl(pDevice, pbyFrame, iSANodeIndex))
415			return false;
416	}
417
418	if (IS_FC_WEP(pbyFrame)) {
419		bool bRxDecryOK = false;
420
421		pr_debug("rx WEP pkt\n");
422		bIsWEP = true;
423		if ((pDevice->bEnableHostWEP) && (iSANodeIndex >= 0)) {
424			pKey = &STempKey;
425			pKey->byCipherSuite = pMgmt->sNodeDBTable[iSANodeIndex].byCipherSuite;
426			pKey->dwKeyIndex = pMgmt->sNodeDBTable[iSANodeIndex].dwKeyIndex;
427			pKey->uKeyLength = pMgmt->sNodeDBTable[iSANodeIndex].uWepKeyLength;
428			pKey->dwTSC47_16 = pMgmt->sNodeDBTable[iSANodeIndex].dwTSC47_16;
429			pKey->wTSC15_0 = pMgmt->sNodeDBTable[iSANodeIndex].wTSC15_0;
430			memcpy(pKey->abyKey,
431			       &pMgmt->sNodeDBTable[iSANodeIndex].abyWepKey[0],
432			       pKey->uKeyLength
433);
434
435			bRxDecryOK = s_bHostWepRxEncryption(pDevice,
436							    pbyFrame,
437							    FrameSize,
438							    pbyRsr,
439							    pMgmt->sNodeDBTable[iSANodeIndex].bOnFly,
440							    pKey,
441							    pbyNewRsr,
442							    &bExtIV,
443							    &wRxTSC15_0,
444							    &dwRxTSC47_16);
445		} else {
446			bRxDecryOK = s_bHandleRxEncryption(pDevice,
447							   pbyFrame,
448							   FrameSize,
449							   pbyRsr,
450							   pbyNewRsr,
451							   &pKey,
452							   &bExtIV,
453							   &wRxTSC15_0,
454							   &dwRxTSC47_16);
455		}
456
457		if (bRxDecryOK) {
458			if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) {
459				pr_debug("ICV Fail\n");
460				if ((pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
461				    (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
462				    (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
463				    (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
464				    (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
465					if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP))
466						pDevice->s802_11Counter.TKIPICVErrors++;
467					else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
468						pDevice->s802_11Counter.CCMPDecryptErrors++;
469				}
470				return false;
471			}
472		} else {
473			pr_debug("WEP Func Fail\n");
474			return false;
475		}
476		if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
477			FrameSize -= 8;         // Message Integrity Code
478		else
479			FrameSize -= 4;         // 4 is ICV
480	}
481
482	//
483	// RX OK
484	//
485	//remove the CRC length
486	FrameSize -= ETH_FCS_LEN;
487
488	if ((!(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI))) && // unicast address
489	    (IS_FRAGMENT_PKT((skb->data+4)))
490) {
491		// defragment
492		bDeFragRx = WCTLbHandleFragment(pDevice, (PS802_11Header)(skb->data+4), FrameSize, bIsWEP, bExtIV);
493		pDevice->s802_11Counter.ReceivedFragmentCount++;
494		if (bDeFragRx) {
495			// defrag complete
496			skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb;
497			FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength;
498
499		} else {
500			return false;
501		}
502	}
503
504// Management & Control frame Handle
505	if ((IS_TYPE_DATA((skb->data+4))) == false) {
506		// Handle Control & Manage Frame
507
508		if (IS_TYPE_MGMT((skb->data+4))) {
509			unsigned char *pbyData1;
510			unsigned char *pbyData2;
511
512			pRxPacket->p80211Header = (PUWLAN_80211HDR)(skb->data+4);
513			pRxPacket->cbMPDULen = FrameSize;
514			pRxPacket->uRSSI = *pbyRSSI;
515			pRxPacket->bySQ = *pbySQ;
516			pRxPacket->qwLocalTSF = le64_to_cpu(*pqwTSFTime);
517			if (bIsWEP) {
518				// strip IV
519				pbyData1 = WLAN_HDR_A3_DATA_PTR(skb->data+4);
520				pbyData2 = WLAN_HDR_A3_DATA_PTR(skb->data+4) + 4;
521				for (ii = 0; ii < (FrameSize - 4); ii++) {
522					*pbyData1 = *pbyData2;
523					pbyData1++;
524					pbyData2++;
525				}
526			}
527			pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate);
528			pRxPacket->byRxChannel = (*pbyRxSts) >> 2;
529
530			vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
531
532			// hostap Deamon handle 802.11 management
533			if (pDevice->bEnableHostapd) {
534				skb->dev = pDevice->apdev;
535				skb->data += 4;
536				skb->tail += 4;
537				skb_put(skb, FrameSize);
538				skb_reset_mac_header(skb);
539				skb->pkt_type = PACKET_OTHERHOST;
540				skb->protocol = htons(ETH_P_802_2);
541				memset(skb->cb, 0, sizeof(skb->cb));
542				netif_rx(skb);
543				return true;
544			}
545		}
546
547		return false;
548	} else {
549		if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
550			//In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC.
551			if (!(*pbyRsr & RSR_BSSIDOK)) {
552				if (bDeFragRx) {
553					if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
554						pr_err("%s: can not alloc more frag bufs\n",
555						       pDevice->dev->name);
556					}
557				}
558				return false;
559			}
560		} else {
561			// discard DATA packet while not associate || BSSID error
562			if (!pDevice->bLinkPass || !(*pbyRsr & RSR_BSSIDOK)) {
563				if (bDeFragRx) {
564					if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
565						pr_err("%s: can not alloc more frag bufs\n",
566						       pDevice->dev->name);
567					}
568				}
569				return false;
570			}
571			//mike add:station mode check eapol-key challenge--->
572			{
573				unsigned char Protocol_Version;    //802.1x Authentication
574				unsigned char Packet_Type;           //802.1x Authentication
575
576				if (bIsWEP)
577					cbIVOffset = 8;
578				else
579					cbIVOffset = 0;
580				wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
581					skb->data[cbIVOffset + 8 + 24 + 6 + 1];
582				Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1];
583				Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1 + 1];
584				if (wEtherType == ETH_P_PAE) {         //Protocol Type in LLC-Header
585					if (((Protocol_Version == 1) || (Protocol_Version == 2)) &&
586					    (Packet_Type == 3)) {  //802.1x OR eapol-key challenge frame receive
587						bRxeapol_key = true;
588					}
589				}
590			}
591			//mike add:station mode check eapol-key challenge<---
592		}
593	}
594
595// Data frame Handle
596
597	if (pDevice->bEnablePSMode) {
598		if (!IS_FC_MOREDATA((skb->data+4))) {
599			if (pDevice->pMgmt->bInTIMWake == true)
600				pDevice->pMgmt->bInTIMWake = false;
601		}
602	}
603
604	// Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps
605	if (pDevice->bDiversityEnable && (FrameSize > 50) &&
606	    (pDevice->op_mode == NL80211_IFTYPE_STATION) &&
607	    pDevice->bLinkPass) {
608		BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0);
609	}
610
611	if (pDevice->byLocalID != REV_ID_VT3253_B1)
612		pDevice->uCurrRSSI = *pbyRSSI;
613
614	pDevice->byCurrSQ = *pbySQ;
615
616	if ((*pbyRSSI != 0) &&
617	    (pMgmt->pCurrBSS != NULL)) {
618		RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
619		// Monitor if RSSI is too strong.
620		pMgmt->pCurrBSS->byRSSIStatCnt++;
621		pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT;
622		pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm;
623		for (ii = 0; ii < RSSI_STAT_COUNT; ii++)
624			if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0)
625				pMgmt->pCurrBSS->ldBmMAX = max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm);
626
627	}
628
629	// -----------------------------------------------
630
631	if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && pDevice->bEnable8021x) {
632		unsigned char abyMacHdr[24];
633
634		// Only 802.1x packet incoming allowed
635		if (bIsWEP)
636			cbIVOffset = 8;
637		else
638			cbIVOffset = 0;
639		wEtherType = (skb->data[cbIVOffset + 4 + 24 + 6] << 8) |
640			skb->data[cbIVOffset + 4 + 24 + 6 + 1];
641
642		pr_debug("wEtherType = %04x\n", wEtherType);
643		if (wEtherType == ETH_P_PAE) {
644			skb->dev = pDevice->apdev;
645
646			if (bIsWEP) {
647				// strip IV header(8)
648				memcpy(&abyMacHdr[0], (skb->data + 4), 24);
649				memcpy((skb->data + 4 + cbIVOffset), &abyMacHdr[0], 24);
650			}
651			skb->data +=  (cbIVOffset + 4);
652			skb->tail +=  (cbIVOffset + 4);
653			skb_put(skb, FrameSize);
654			skb_reset_mac_header(skb);
655
656			skb->pkt_type = PACKET_OTHERHOST;
657			skb->protocol = htons(ETH_P_802_2);
658			memset(skb->cb, 0, sizeof(skb->cb));
659			netif_rx(skb);
660			return true;
661
662		}
663		// check if 802.1x authorized
664		if (!(pMgmt->sNodeDBTable[iSANodeIndex].dwFlags & WLAN_STA_AUTHORIZED))
665			return false;
666	}
667
668	if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
669		if (bIsWEP)
670			FrameSize -= 8;  //MIC
671	}
672
673	//--------------------------------------------------------------------------------
674	// Soft MIC
675	if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
676		if (bIsWEP) {
677			__le32 *pdwMIC_L;
678			__le32 *pdwMIC_R;
679			__le32 dwMIC_Priority;
680			__le32 dwMICKey0 = 0, dwMICKey1 = 0;
681			u32 dwLocalMIC_L = 0;
682			u32 dwLocalMIC_R = 0;
683			viawget_wpa_header *wpahdr;
684
685			if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
686				dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
687				dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
688			} else {
689				if (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) {
690					dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
691					dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
692				} else if ((pKey->dwKeyIndex & BIT28) == 0) {
693					dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
694					dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
695				} else {
696					dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
697					dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
698				}
699			}
700
701			MIC_vInit(dwMICKey0, dwMICKey1);
702			MIC_vAppend((unsigned char *)&(pDevice->sRxEthHeader.abyDstAddr[0]), 12);
703			dwMIC_Priority = 0;
704			MIC_vAppend((unsigned char *)&dwMIC_Priority, 4);
705			// 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV.
706			MIC_vAppend((unsigned char *)(skb->data + 4 + WLAN_HDR_ADDR3_LEN + 8),
707				    FrameSize - WLAN_HDR_ADDR3_LEN - 8);
708			MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R);
709			MIC_vUnInit();
710
711			pdwMIC_L = (__le32 *)(skb->data + 4 + FrameSize);
712			pdwMIC_R = (__le32 *)(skb->data + 4 + FrameSize + 4);
713
714			if ((le32_to_cpu(*pdwMIC_L) != dwLocalMIC_L) ||
715			    (le32_to_cpu(*pdwMIC_R) != dwLocalMIC_R) ||
716			    pDevice->bRxMICFail) {
717				pr_debug("MIC comparison is fail!\n");
718				pDevice->bRxMICFail = false;
719				pDevice->s802_11Counter.TKIPLocalMICFailures++;
720				if (bDeFragRx) {
721					if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
722						pr_err("%s: can not alloc more frag bufs\n",
723						       pDevice->dev->name);
724					}
725				}
726				//2008-0409-07, <Add> by Einsn Liu
727#ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
728				//send event to wpa_supplicant
729				{
730					union iwreq_data wrqu;
731					struct iw_michaelmicfailure ev;
732					int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits
733
734					memset(&ev, 0, sizeof(ev));
735					ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
736					if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
737					    (pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
738					    (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
739						ev.flags |= IW_MICFAILURE_PAIRWISE;
740					} else {
741						ev.flags |= IW_MICFAILURE_GROUP;
742					}
743
744					ev.src_addr.sa_family = ARPHRD_ETHER;
745					memcpy(ev.src_addr.sa_data, pMACHeader->abyAddr2, ETH_ALEN);
746					memset(&wrqu, 0, sizeof(wrqu));
747					wrqu.data.length = sizeof(ev);
748					wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
749
750				}
751#endif
752
753				if ((pDevice->bWPADEVUp) && (pDevice->skb != NULL)) {
754					wpahdr = (viawget_wpa_header *)pDevice->skb->data;
755					if ((pDevice->pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
756					    (pDevice->pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
757					    (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
758						wpahdr->type = VIAWGET_PTK_MIC_MSG;
759					} else {
760						wpahdr->type = VIAWGET_GTK_MIC_MSG;
761					}
762					wpahdr->resp_ie_len = 0;
763					wpahdr->req_ie_len = 0;
764					skb_put(pDevice->skb, sizeof(viawget_wpa_header));
765					pDevice->skb->dev = pDevice->wpadev;
766					skb_reset_mac_header(pDevice->skb);
767					pDevice->skb->pkt_type = PACKET_HOST;
768					pDevice->skb->protocol = htons(ETH_P_802_2);
769					memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb));
770					netif_rx(pDevice->skb);
771					pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
772				}
773
774				return false;
775
776			}
777		}
778	} //---end of SOFT MIC-----------------------------------------------------------------------
779
780	// ++++++++++ Reply Counter Check +++++++++++++
781
782	if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) ||
783			       (pKey->byCipherSuite == KEY_CTL_CCMP))) {
784		if (bIsWEP) {
785			unsigned short wLocalTSC15_0 = 0;
786			unsigned long dwLocalTSC47_16 = 0;
787			unsigned long long       RSC = 0;
788			// endian issues
789			RSC = *((unsigned long long *)&(pKey->KeyRSC));
790			wLocalTSC15_0 = (unsigned short)RSC;
791			dwLocalTSC47_16 = (unsigned long)(RSC>>16);
792
793			RSC = dwRxTSC47_16;
794			RSC <<= 16;
795			RSC += wRxTSC15_0;
796			pKey->KeyRSC = RSC;
797
798			if ((pDevice->sMgmtObj.eCurrMode == WMAC_MODE_ESS_STA) &&
799			    (pDevice->sMgmtObj.eCurrState == WMAC_STATE_ASSOC)) {
800				// check RSC
801				if ((wRxTSC15_0 < wLocalTSC15_0) &&
802				    (dwRxTSC47_16 <= dwLocalTSC47_16) &&
803				    !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) {
804					pr_debug("TSC is illegal~~!\n ");
805					if (pKey->byCipherSuite == KEY_CTL_TKIP)
806						pDevice->s802_11Counter.TKIPReplays++;
807					else
808						pDevice->s802_11Counter.CCMPReplays++;
809
810					if (bDeFragRx) {
811						if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
812							pr_err("%s: can not alloc more frag bufs\n",
813							       pDevice->dev->name);
814						}
815					}
816					return false;
817				}
818			}
819		}
820	} // ----- End of Reply Counter Check --------------------------
821
822	s_vProcessRxMACHeader(pDevice, (unsigned char *)(skb->data+4), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset);
823	FrameSize -= cbHeaderOffset;
824	cbHeaderOffset += 4;        // 4 is Rcv buffer header
825
826	// Null data, framesize = 14
827	if (FrameSize < 15)
828		return false;
829
830	if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
831		if (!s_bAPModeRxData(pDevice,
832				    skb,
833				    FrameSize,
834				    cbHeaderOffset,
835				    iSANodeIndex,
836				    iDANodeIndex
837)) {
838			if (bDeFragRx) {
839				if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
840					pr_err("%s: can not alloc more frag bufs\n",
841					       pDevice->dev->name);
842				}
843			}
844			return false;
845		}
846	}
847
848	skb->data += cbHeaderOffset;
849	skb->tail += cbHeaderOffset;
850	skb_put(skb, FrameSize);
851	skb->protocol = eth_type_trans(skb, skb->dev);
852
853	//drop frame not met IEEE 802.3
854
855	skb->ip_summed = CHECKSUM_NONE;
856	pStats->rx_bytes += skb->len;
857	pStats->rx_packets++;
858	netif_rx(skb);
859
860	if (bDeFragRx) {
861		if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
862			pr_err("%s: can not alloc more frag bufs\n",
863			       pDevice->dev->name);
864		}
865		return false;
866	}
867
868	return true;
869}
870
871static bool s_bAPModeRxCtl(
872	struct vnt_private *pDevice,
873	unsigned char *pbyFrame,
874	int      iSANodeIndex
875)
876{
877	PS802_11Header      p802_11Header;
878	CMD_STATUS          Status;
879	PSMgmtObject        pMgmt = pDevice->pMgmt;
880
881	if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
882		p802_11Header = (PS802_11Header)(pbyFrame);
883		if (!IS_TYPE_MGMT(pbyFrame)) {
884			// Data & PS-Poll packet
885			// check frame class
886			if (iSANodeIndex > 0) {
887				// frame class 3 fliter & checking
888				if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_AUTH) {
889					// send deauth notification
890					// reason = (6) class 2 received from nonauth sta
891					vMgrDeAuthenBeginSta(pDevice,
892							     pMgmt,
893							     (unsigned char *)(p802_11Header->abyAddr2),
894							     (WLAN_MGMT_REASON_CLASS2_NONAUTH),
895							     &Status
896);
897					pr_debug("dpc: send vMgrDeAuthenBeginSta 1\n");
898					return true;
899				}
900				if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_ASSOC) {
901					// send deassoc notification
902					// reason = (7) class 3 received from nonassoc sta
903					vMgrDisassocBeginSta(pDevice,
904							     pMgmt,
905							     (unsigned char *)(p802_11Header->abyAddr2),
906							     (WLAN_MGMT_REASON_CLASS3_NONASSOC),
907							     &Status
908);
909					pr_debug("dpc: send vMgrDisassocBeginSta 2\n");
910					return true;
911				}
912
913				if (pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable) {
914					// delcare received ps-poll event
915					if (IS_CTL_PSPOLL(pbyFrame)) {
916						pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
917						bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
918						pr_debug("dpc: WLAN_CMD_RX_PSPOLL 1\n");
919					} else {
920						// check Data PS state
921						// if PW bit off, send out all PS bufferring packets.
922						if (!IS_FC_POWERMGT(pbyFrame)) {
923							pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
924							pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
925							bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
926							pr_debug("dpc: WLAN_CMD_RX_PSPOLL 2\n");
927						}
928					}
929				} else {
930					if (IS_FC_POWERMGT(pbyFrame)) {
931						pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = true;
932						// Once if STA in PS state, enable multicast bufferring
933						pMgmt->sNodeDBTable[0].bPSEnable = true;
934					} else {
935						// clear all pending PS frame.
936						if (pMgmt->sNodeDBTable[iSANodeIndex].wEnQueueCnt > 0) {
937							pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
938							pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
939							bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
940							pr_debug("dpc: WLAN_CMD_RX_PSPOLL 3\n");
941
942						}
943					}
944				}
945			} else {
946				vMgrDeAuthenBeginSta(pDevice,
947						     pMgmt,
948						     (unsigned char *)(p802_11Header->abyAddr2),
949						     (WLAN_MGMT_REASON_CLASS2_NONAUTH),
950						     &Status
951);
952				pr_debug("dpc: send vMgrDeAuthenBeginSta 3\n");
953				pr_debug("BSSID:%pM\n",
954					 p802_11Header->abyAddr3);
955				pr_debug("ADDR2:%pM\n",
956					 p802_11Header->abyAddr2);
957				pr_debug("ADDR1:%pM\n",
958					 p802_11Header->abyAddr1);
959				pr_debug("dpc: wFrameCtl= %x\n",
960					 p802_11Header->wFrameCtl);
961				VNSvInPortB(pDevice->PortOffset + MAC_REG_RCR, &(pDevice->byRxMode));
962				pr_debug("dpc:pDevice->byRxMode = %x\n",
963					 pDevice->byRxMode);
964				return true;
965			}
966		}
967	}
968	return false;
969}
970
971static bool s_bHandleRxEncryption(
972	struct vnt_private *pDevice,
973	unsigned char *pbyFrame,
974	unsigned int FrameSize,
975	unsigned char *pbyRsr,
976	unsigned char *pbyNewRsr,
977	PSKeyItem   *pKeyOut,
978	bool *pbExtIV,
979	unsigned short *pwRxTSC15_0,
980	unsigned long *pdwRxTSC47_16
981)
982{
983	unsigned int PayloadLen = FrameSize;
984	unsigned char *pbyIV;
985	unsigned char byKeyIdx;
986	PSKeyItem       pKey = NULL;
987	unsigned char byDecMode = KEY_CTL_WEP;
988	PSMgmtObject    pMgmt = pDevice->pMgmt;
989
990	*pwRxTSC15_0 = 0;
991	*pdwRxTSC47_16 = 0;
992
993	pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
994	if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
995	    WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
996		pbyIV += 6;             // 6 is 802.11 address4
997		PayloadLen -= 6;
998	}
999	byKeyIdx = (*(pbyIV+3) & 0xc0);
1000	byKeyIdx >>= 6;
1001	pr_debug("\nKeyIdx: %d\n", byKeyIdx);
1002
1003	if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
1004	    (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
1005	    (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
1006	    (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
1007	    (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
1008		if (((*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) &&
1009		    (pDevice->pMgmt->byCSSPK != KEY_CTL_NONE)) {
1010			// unicast pkt use pairwise key
1011			pr_debug("unicast pkt\n");
1012			if (KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, 0xFFFFFFFF, &pKey) == true) {
1013				if (pDevice->pMgmt->byCSSPK == KEY_CTL_TKIP)
1014					byDecMode = KEY_CTL_TKIP;
1015				else if (pDevice->pMgmt->byCSSPK == KEY_CTL_CCMP)
1016					byDecMode = KEY_CTL_CCMP;
1017			}
1018			pr_debug("unicast pkt: %d, %p\n", byDecMode, pKey);
1019		} else {
1020			// use group key
1021			KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, byKeyIdx, &pKey);
1022			if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1023				byDecMode = KEY_CTL_TKIP;
1024			else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1025				byDecMode = KEY_CTL_CCMP;
1026			pr_debug("group pkt: %d, %d, %p\n",
1027				 byKeyIdx, byDecMode, pKey);
1028		}
1029	}
1030	// our WEP only support Default Key
1031	if (pKey == NULL) {
1032		// use default group key
1033		KeybGetKey(&(pDevice->sKey), pDevice->abyBroadcastAddr, byKeyIdx, &pKey);
1034		if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1035			byDecMode = KEY_CTL_TKIP;
1036		else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1037			byDecMode = KEY_CTL_CCMP;
1038	}
1039	*pKeyOut = pKey;
1040
1041	pr_debug("AES:%d %d %d\n",
1042		 pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1043
1044	if (pKey == NULL) {
1045		pr_debug("pKey == NULL\n");
1046
1047		return false;
1048	}
1049	if (byDecMode != pKey->byCipherSuite) {
1050
1051		*pKeyOut = NULL;
1052		return false;
1053	}
1054	if (byDecMode == KEY_CTL_WEP) {
1055		// handle WEP
1056		if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1057		    (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) {
1058			// Software WEP
1059			// 1. 3253A
1060			// 2. WEP 256
1061
1062			PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1063			memcpy(pDevice->abyPRNG, pbyIV, 3);
1064			memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1065			rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1066			rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1067
1068			if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen))
1069				*pbyNewRsr |= NEWRSR_DECRYPTOK;
1070
1071		}
1072	} else if ((byDecMode == KEY_CTL_TKIP) ||
1073		   (byDecMode == KEY_CTL_CCMP)) {
1074		// TKIP/AES
1075
1076		PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1077		*pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1078		pr_debug("ExtIV: %lx\n", *pdwRxTSC47_16);
1079		if (byDecMode == KEY_CTL_TKIP)
1080			*pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV + 2), *pbyIV));
1081		else
1082			*pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1083
1084		pr_debug("TSC0_15: %x\n", *pwRxTSC15_0);
1085
1086		if ((byDecMode == KEY_CTL_TKIP) &&
1087		    (pDevice->byLocalID <= REV_ID_VT3253_A1)) {
1088			// Software TKIP
1089			// 1. 3253 A
1090			PS802_11Header  pMACHeader = (PS802_11Header)(pbyFrame);
1091
1092			TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1093			rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1094			rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1095			if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1096				*pbyNewRsr |= NEWRSR_DECRYPTOK;
1097				pr_debug("ICV OK!\n");
1098			} else {
1099				pr_debug("ICV FAIL!!!\n");
1100				pr_debug("PayloadLen = %d\n", PayloadLen);
1101			}
1102		}
1103	}// end of TKIP/AES
1104
1105	if ((*(pbyIV+3) & 0x20) != 0)
1106		*pbExtIV = true;
1107	return true;
1108}
1109
1110static bool s_bHostWepRxEncryption(
1111	struct vnt_private *pDevice,
1112	unsigned char *pbyFrame,
1113	unsigned int FrameSize,
1114	unsigned char *pbyRsr,
1115	bool bOnFly,
1116	PSKeyItem    pKey,
1117	unsigned char *pbyNewRsr,
1118	bool *pbExtIV,
1119	unsigned short *pwRxTSC15_0,
1120	unsigned long *pdwRxTSC47_16
1121)
1122{
1123	unsigned int PayloadLen = FrameSize;
1124	unsigned char *pbyIV;
1125	unsigned char byKeyIdx;
1126	unsigned char byDecMode = KEY_CTL_WEP;
1127	PS802_11Header  pMACHeader;
1128
1129	*pwRxTSC15_0 = 0;
1130	*pdwRxTSC47_16 = 0;
1131
1132	pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1133	if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1134	    WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
1135		pbyIV += 6;             // 6 is 802.11 address4
1136		PayloadLen -= 6;
1137	}
1138	byKeyIdx = (*(pbyIV+3) & 0xc0);
1139	byKeyIdx >>= 6;
1140	pr_debug("\nKeyIdx: %d\n", byKeyIdx);
1141
1142	if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1143		byDecMode = KEY_CTL_TKIP;
1144	else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1145		byDecMode = KEY_CTL_CCMP;
1146
1147	pr_debug("AES:%d %d %d\n",
1148		 pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1149
1150	if (byDecMode != pKey->byCipherSuite)
1151		return false;
1152
1153	if (byDecMode == KEY_CTL_WEP) {
1154		// handle WEP
1155		pr_debug("byDecMode == KEY_CTL_WEP\n");
1156
1157		if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1158		    (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true) ||
1159		    !bOnFly) {
1160			// Software WEP
1161			// 1. 3253A
1162			// 2. WEP 256
1163			// 3. NotOnFly
1164
1165			PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1166			memcpy(pDevice->abyPRNG, pbyIV, 3);
1167			memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1168			rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1169			rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1170
1171			if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen))
1172				*pbyNewRsr |= NEWRSR_DECRYPTOK;
1173
1174		}
1175	} else if ((byDecMode == KEY_CTL_TKIP) ||
1176		   (byDecMode == KEY_CTL_CCMP)) {
1177		// TKIP/AES
1178
1179		PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1180		*pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1181		pr_debug("ExtIV: %lx\n", *pdwRxTSC47_16);
1182
1183		if (byDecMode == KEY_CTL_TKIP)
1184			*pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1185		else
1186			*pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1187
1188		pr_debug("TSC0_15: %x\n", *pwRxTSC15_0);
1189
1190		if (byDecMode == KEY_CTL_TKIP) {
1191			if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || !bOnFly) {
1192				// Software TKIP
1193				// 1. 3253 A
1194				// 2. NotOnFly
1195				pr_debug("soft KEY_CTL_TKIP\n");
1196				pMACHeader = (PS802_11Header)(pbyFrame);
1197				TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1198				rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1199				rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1200				if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1201					*pbyNewRsr |= NEWRSR_DECRYPTOK;
1202					pr_debug("ICV OK!\n");
1203				} else {
1204					pr_debug("ICV FAIL!!!\n");
1205					pr_debug("PayloadLen = %d\n",
1206						 PayloadLen);
1207				}
1208			}
1209		}
1210
1211		if (byDecMode == KEY_CTL_CCMP) {
1212			if (!bOnFly) {
1213				// Software CCMP
1214				// NotOnFly
1215				pr_debug("soft KEY_CTL_CCMP\n");
1216				if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) {
1217					*pbyNewRsr |= NEWRSR_DECRYPTOK;
1218					pr_debug("CCMP MIC compare OK!\n");
1219				} else {
1220					pr_debug("CCMP MIC fail!\n");
1221				}
1222			}
1223		}
1224
1225	}// end of TKIP/AES
1226
1227	if ((*(pbyIV+3) & 0x20) != 0)
1228		*pbExtIV = true;
1229	return true;
1230}
1231
1232static bool s_bAPModeRxData(
1233	struct vnt_private *pDevice,
1234	struct sk_buff *skb,
1235	unsigned int FrameSize,
1236	unsigned int cbHeaderOffset,
1237	int      iSANodeIndex,
1238	int      iDANodeIndex
1239)
1240{
1241	PSMgmtObject        pMgmt = pDevice->pMgmt;
1242	bool bRelayAndForward = false;
1243	bool bRelayOnly = false;
1244	unsigned char byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
1245	unsigned short wAID;
1246
1247	struct sk_buff *skbcpy = NULL;
1248
1249	if (FrameSize > CB_MAX_BUF_SIZE)
1250		return false;
1251	// check DA
1252	if (is_multicast_ether_addr((unsigned char *)(skb->data+cbHeaderOffset))) {
1253		if (pMgmt->sNodeDBTable[0].bPSEnable) {
1254			skbcpy = dev_alloc_skb((int)pDevice->rx_buf_sz);
1255
1256			// if any node in PS mode, buffer packet until DTIM.
1257			if (skbcpy == NULL) {
1258				pr_info("relay multicast no skb available\n");
1259			} else {
1260				skbcpy->dev = pDevice->dev;
1261				skbcpy->len = FrameSize;
1262				memcpy(skbcpy->data, skb->data+cbHeaderOffset, FrameSize);
1263				skb_queue_tail(&(pMgmt->sNodeDBTable[0].sTxPSQueue), skbcpy);
1264
1265				pMgmt->sNodeDBTable[0].wEnQueueCnt++;
1266				// set tx map
1267				pMgmt->abyPSTxMap[0] |= byMask[0];
1268			}
1269		} else {
1270			bRelayAndForward = true;
1271		}
1272	} else {
1273		// check if relay
1274		if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(skb->data+cbHeaderOffset), &iDANodeIndex)) {
1275			if (pMgmt->sNodeDBTable[iDANodeIndex].eNodeState >= NODE_ASSOC) {
1276				if (pMgmt->sNodeDBTable[iDANodeIndex].bPSEnable) {
1277					// queue this skb until next PS tx, and then release.
1278
1279					skb->data += cbHeaderOffset;
1280					skb->tail += cbHeaderOffset;
1281					skb_put(skb, FrameSize);
1282					skb_queue_tail(&pMgmt->sNodeDBTable[iDANodeIndex].sTxPSQueue, skb);
1283					pMgmt->sNodeDBTable[iDANodeIndex].wEnQueueCnt++;
1284					wAID = pMgmt->sNodeDBTable[iDANodeIndex].wAID;
1285					pMgmt->abyPSTxMap[wAID >> 3] |=  byMask[wAID & 7];
1286					pr_debug("relay: index= %d, pMgmt->abyPSTxMap[%d]= %d\n",
1287						 iDANodeIndex, (wAID >> 3),
1288						 pMgmt->abyPSTxMap[wAID >> 3]);
1289					return true;
1290				} else {
1291					bRelayOnly = true;
1292				}
1293			}
1294		}
1295	}
1296
1297	if (bRelayOnly || bRelayAndForward) {
1298		// relay this packet right now
1299		if (bRelayAndForward)
1300			iDANodeIndex = 0;
1301
1302		if ((pDevice->uAssocCount > 1) && (iDANodeIndex >= 0))
1303			ROUTEbRelay(pDevice, (unsigned char *)(skb->data + cbHeaderOffset), FrameSize, (unsigned int)iDANodeIndex);
1304
1305		if (bRelayOnly)
1306			return false;
1307	}
1308	// none associate, don't forward
1309	if (pDevice->uAssocCount == 0)
1310		return false;
1311
1312	return true;
1313}
1314