tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
58/*--------------------- Static Definitions -------------------------*/
59
60/*--------------------- Static Classes ----------------------------*/
61
62/*--------------------- Static Variables --------------------------*/
63//static int msglevel =MSG_LEVEL_DEBUG;
64static int msglevel = MSG_LEVEL_INFO;
65
66const unsigned char acbyRxRate[MAX_RATE] =
67{2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
68
69/*--------------------- Static Functions --------------------------*/
70
71/*--------------------- Static Definitions -------------------------*/
72
73/*--------------------- Static Functions --------------------------*/
74
75static unsigned char s_byGetRateIdx(unsigned char byRate);
76
77static void
78s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize,
79 PSEthernetHeader psEthHeader);
80
81static void
82s_vProcessRxMACHeader(PSDevice pDevice, unsigned char *pbyRxBufferAddr,
83 unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
84 unsigned int *pcbHeadSize);
85
86static bool s_bAPModeRxCtl(
87 PSDevice pDevice,
88 unsigned char *pbyFrame,
89 int iSANodeIndex
90);
91
92static bool s_bAPModeRxData(
93 PSDevice pDevice,
94 struct sk_buff *skb,
95 unsigned int FrameSize,
96 unsigned int cbHeaderOffset,
97 int iSANodeIndex,
98 int iDANodeIndex
99);
100
101static bool s_bHandleRxEncryption(
102 PSDevice pDevice,
103 unsigned char *pbyFrame,
104 unsigned int FrameSize,
105 unsigned char *pbyRsr,
106 unsigned char *pbyNewRsr,
107 PSKeyItem *pKeyOut,
108 bool *pbExtIV,
109 unsigned short *pwRxTSC15_0,
110 unsigned long *pdwRxTSC47_16
111);
112
113static bool s_bHostWepRxEncryption(
114
115 PSDevice pDevice,
116 unsigned char *pbyFrame,
117 unsigned int FrameSize,
118 unsigned char *pbyRsr,
119 bool bOnFly,
120 PSKeyItem pKey,
121 unsigned char *pbyNewRsr,
122 bool *pbExtIV,
123 unsigned short *pwRxTSC15_0,
124 unsigned long *pdwRxTSC47_16
125
126);
127
128/*--------------------- Export Variables --------------------------*/
129
130/*+
131 *
132 * Description:
133 * Translate Rcv 802.11 header to 802.3 header with Rx buffer
134 *
135 * Parameters:
136 * In:
137 * pDevice
138 * dwRxBufferAddr - Address of Rcv Buffer
139 * cbPacketSize - Rcv Packet size
140 * bIsWEP - If Rcv with WEP
141 * Out:
142 * pcbHeaderSize - 802.11 header size
143 *
144 * Return Value: None
145 *
146 -*/
147static void
148s_vProcessRxMACHeader(PSDevice pDevice, unsigned char *pbyRxBufferAddr,
149 unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
150 unsigned int *pcbHeadSize)
151{
152 unsigned char *pbyRxBuffer;
153 unsigned int cbHeaderSize = 0;
154 unsigned short *pwType;
155 PS802_11Header pMACHeader;
156 int ii;
157
158 pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize);
159
160 s_vGetDASA((unsigned char *)pMACHeader, &cbHeaderSize, &pDevice->sRxEthHeader);
161
162 if (bIsWEP) {
163 if (bExtIV) {
164 // strip IV&ExtIV , add 8 byte
165 cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 8);
166 } else {
167 // strip IV , add 4 byte
168 cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 4);
169 }
170 } else {
171 cbHeaderSize += WLAN_HDR_ADDR3_LEN;
172 };
173
174 pbyRxBuffer = (unsigned char *)(pbyRxBufferAddr + cbHeaderSize);
175 if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_Bridgetunnel)) {
176 cbHeaderSize += 6;
177 } else if (ether_addr_equal(pbyRxBuffer, pDevice->abySNAP_RFC1042)) {
178 cbHeaderSize += 6;
179 pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize);
180 if ((*pwType != TYPE_PKT_IPX) && (*pwType != cpu_to_le16(0xF380))) {
181 } else {
182 cbHeaderSize -= 8;
183 pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize);
184 if (bIsWEP) {
185 if (bExtIV) {
186 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8); // 8 is IV&ExtIV
187 } else {
188 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4); // 4 is IV
189 }
190 } else {
191 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
192 }
193 }
194 } else {
195 cbHeaderSize -= 2;
196 pwType = (unsigned short *)(pbyRxBufferAddr + cbHeaderSize);
197 if (bIsWEP) {
198 if (bExtIV) {
199 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8); // 8 is IV&ExtIV
200 } else {
201 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4); // 4 is IV
202 }
203 } else {
204 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
205 }
206 }
207
208 cbHeaderSize -= (ETH_ALEN * 2);
209 pbyRxBuffer = (unsigned char *)(pbyRxBufferAddr + cbHeaderSize);
210 for (ii = 0; ii < ETH_ALEN; ii++)
211 *pbyRxBuffer++ = pDevice->sRxEthHeader.abyDstAddr[ii];
212 for (ii = 0; ii < ETH_ALEN; ii++)
213 *pbyRxBuffer++ = pDevice->sRxEthHeader.abySrcAddr[ii];
214
215 *pcbHeadSize = cbHeaderSize;
216}
217
218static unsigned char s_byGetRateIdx(unsigned char byRate)
219{
220 unsigned char byRateIdx;
221
222 for (byRateIdx = 0; byRateIdx < MAX_RATE; byRateIdx++) {
223 if (acbyRxRate[byRateIdx % MAX_RATE] == byRate)
224 return byRateIdx;
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
270//PLICE_DEBUG ->
271
272void MngWorkItem(void *Context)
273{
274 PSRxMgmtPacket pRxMgmtPacket;
275 PSDevice pDevice = (PSDevice) Context;
276
277 spin_lock_irq(&pDevice->lock);
278 while (pDevice->rxManeQueue.packet_num != 0) {
279 pRxMgmtPacket = DeQueue(pDevice);
280 vMgrRxManagePacket(pDevice, pDevice->pMgmt, pRxMgmtPacket);
281 }
282 spin_unlock_irq(&pDevice->lock);
283}
284
285//PLICE_DEBUG<-
286
287bool
288device_receive_frame(
289 PSDevice pDevice,
290 PSRxDesc pCurrRD
291)
292{
293 PDEVICE_RD_INFO pRDInfo = pCurrRD->pRDInfo;
294 struct net_device_stats *pStats = &pDevice->stats;
295 struct sk_buff *skb;
296 PSMgmtObject pMgmt = pDevice->pMgmt;
297 PSRxMgmtPacket pRxPacket = &(pDevice->pMgmt->sRxPacket);
298 PS802_11Header p802_11Header;
299 unsigned char *pbyRsr;
300 unsigned char *pbyNewRsr;
301 unsigned char *pbyRSSI;
302 PQWORD pqwTSFTime;
303 unsigned short *pwFrameSize;
304 unsigned char *pbyFrame;
305 bool bDeFragRx = false;
306 bool bIsWEP = false;
307 unsigned int cbHeaderOffset;
308 unsigned int FrameSize;
309 unsigned short wEtherType = 0;
310 int iSANodeIndex = -1;
311 int iDANodeIndex = -1;
312 unsigned int ii;
313 unsigned int cbIVOffset;
314 bool bExtIV = false;
315 unsigned char *pbyRxSts;
316 unsigned char *pbyRxRate;
317 unsigned char *pbySQ;
318 unsigned int cbHeaderSize;
319 PSKeyItem pKey = NULL;
320 unsigned short wRxTSC15_0 = 0;
321 unsigned long dwRxTSC47_16 = 0;
322 SKeyItem STempKey;
323 // 802.11h RPI
324 unsigned long dwDuration = 0;
325 long ldBm = 0;
326 long ldBmThreshold = 0;
327 PS802_11Header pMACHeader;
328 bool bRxeapol_key = false;
329
330// DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- device_receive_frame---\n");
331
332 skb = pRDInfo->skb;
333
334//PLICE_DEBUG->
335#if 1
336 pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
337 pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
338#endif
339//PLICE_DEBUG<-
340 pwFrameSize = (unsigned short *)(skb->data + 2);
341 FrameSize = cpu_to_le16(pCurrRD->m_rd1RD1.wReqCount) - cpu_to_le16(pCurrRD->m_rd0RD0.wResCount);
342
343 // Max: 2312Payload + 30HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
344 // Min (ACK): 10HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
345 if ((FrameSize > 2364) || (FrameSize <= 32)) {
346 // Frame Size error drop this packet.
347 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 1 \n");
348 return false;
349 }
350
351 pbyRxSts = (unsigned char *)(skb->data);
352 pbyRxRate = (unsigned char *)(skb->data + 1);
353 pbyRsr = (unsigned char *)(skb->data + FrameSize - 1);
354 pbyRSSI = (unsigned char *)(skb->data + FrameSize - 2);
355 pbyNewRsr = (unsigned char *)(skb->data + FrameSize - 3);
356 pbySQ = (unsigned char *)(skb->data + FrameSize - 4);
357 pqwTSFTime = (PQWORD)(skb->data + FrameSize - 12);
358 pbyFrame = (unsigned char *)(skb->data + 4);
359
360 // get packet size
361 FrameSize = cpu_to_le16(*pwFrameSize);
362
363 if ((FrameSize > 2346)|(FrameSize < 14)) { // Max: 2312Payload + 30HD +4CRC
364 // Min: 14 bytes ACK
365 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 2 \n");
366 return false;
367 }
368//PLICE_DEBUG->
369#if 1
370 // update receive statistic counter
371 STAvUpdateRDStatCounter(&pDevice->scStatistic,
372 *pbyRsr,
373 *pbyNewRsr,
374 *pbyRxRate,
375 pbyFrame,
376 FrameSize);
377
378#endif
379
380 pMACHeader = (PS802_11Header)((unsigned char *)(skb->data) + 8);
381//PLICE_DEBUG<-
382 if (pDevice->bMeasureInProgress == true) {
383 if ((*pbyRsr & RSR_CRCOK) != 0) {
384 pDevice->byBasicMap |= 0x01;
385 }
386 dwDuration = (FrameSize << 4);
387 dwDuration /= acbyRxRate[*pbyRxRate%MAX_RATE];
388 if (*pbyRxRate <= RATE_11M) {
389 if (*pbyRxSts & 0x01) {
390 // long preamble
391 dwDuration += 192;
392 } else {
393 // short preamble
394 dwDuration += 96;
395 }
396 } else {
397 dwDuration += 16;
398 }
399 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
400 ldBmThreshold = -57;
401 for (ii = 7; ii > 0;) {
402 if (ldBm > ldBmThreshold) {
403 break;
404 }
405 ldBmThreshold -= 5;
406 ii--;
407 }
408 pDevice->dwRPIs[ii] += dwDuration;
409 return false;
410 }
411
412 if (!is_multicast_ether_addr(pbyFrame)) {
413 if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (PS802_11Header)(skb->data + 4))) {
414 pDevice->s802_11Counter.FrameDuplicateCount++;
415 return false;
416 }
417 }
418
419 // Use for TKIP MIC
420 s_vGetDASA(skb->data+4, &cbHeaderSize, &pDevice->sRxEthHeader);
421
422 // filter packet send from myself
423 if (ether_addr_equal(pDevice->sRxEthHeader.abySrcAddr,
424 pDevice->abyCurrentNetAddr))
425 return false;
426
427 if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) {
428 if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
429 p802_11Header = (PS802_11Header)(pbyFrame);
430 // get SA NodeIndex
431 if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(p802_11Header->abyAddr2), &iSANodeIndex)) {
432 pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies;
433 pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0;
434 }
435 }
436 }
437
438 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
439 if (s_bAPModeRxCtl(pDevice, pbyFrame, iSANodeIndex) == true) {
440 return false;
441 }
442 }
443
444 if (IS_FC_WEP(pbyFrame)) {
445 bool bRxDecryOK = false;
446
447 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "rx WEP pkt\n");
448 bIsWEP = true;
449 if ((pDevice->bEnableHostWEP) && (iSANodeIndex >= 0)) {
450 pKey = &STempKey;
451 pKey->byCipherSuite = pMgmt->sNodeDBTable[iSANodeIndex].byCipherSuite;
452 pKey->dwKeyIndex = pMgmt->sNodeDBTable[iSANodeIndex].dwKeyIndex;
453 pKey->uKeyLength = pMgmt->sNodeDBTable[iSANodeIndex].uWepKeyLength;
454 pKey->dwTSC47_16 = pMgmt->sNodeDBTable[iSANodeIndex].dwTSC47_16;
455 pKey->wTSC15_0 = pMgmt->sNodeDBTable[iSANodeIndex].wTSC15_0;
456 memcpy(pKey->abyKey,
457 &pMgmt->sNodeDBTable[iSANodeIndex].abyWepKey[0],
458 pKey->uKeyLength
459);
460
461 bRxDecryOK = s_bHostWepRxEncryption(pDevice,
462 pbyFrame,
463 FrameSize,
464 pbyRsr,
465 pMgmt->sNodeDBTable[iSANodeIndex].bOnFly,
466 pKey,
467 pbyNewRsr,
468 &bExtIV,
469 &wRxTSC15_0,
470 &dwRxTSC47_16);
471 } else {
472 bRxDecryOK = s_bHandleRxEncryption(pDevice,
473 pbyFrame,
474 FrameSize,
475 pbyRsr,
476 pbyNewRsr,
477 &pKey,
478 &bExtIV,
479 &wRxTSC15_0,
480 &dwRxTSC47_16);
481 }
482
483 if (bRxDecryOK) {
484 if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) {
485 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV Fail\n");
486 if ((pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
487 (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
488 (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
489 (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
490 (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
491 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
492 pDevice->s802_11Counter.TKIPICVErrors++;
493 } else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP)) {
494 pDevice->s802_11Counter.CCMPDecryptErrors++;
495 } else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_WEP)) {
496// pDevice->s802_11Counter.WEPICVErrorCount.QuadPart++;
497 }
498 }
499 return false;
500 }
501 } else {
502 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "WEP Func Fail\n");
503 return false;
504 }
505 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
506 FrameSize -= 8; // Message Integrity Code
507 else
508 FrameSize -= 4; // 4 is ICV
509 }
510
511 //
512 // RX OK
513 //
514 //remove the CRC length
515 FrameSize -= ETH_FCS_LEN;
516
517 if ((!(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI))) && // unicast address
518 (IS_FRAGMENT_PKT((skb->data+4)))
519) {
520 // defragment
521 bDeFragRx = WCTLbHandleFragment(pDevice, (PS802_11Header)(skb->data+4), FrameSize, bIsWEP, bExtIV);
522 pDevice->s802_11Counter.ReceivedFragmentCount++;
523 if (bDeFragRx) {
524 // defrag complete
525 skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb;
526 FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength;
527
528 } else {
529 return false;
530 }
531 }
532
533// Management & Control frame Handle
534 if ((IS_TYPE_DATA((skb->data+4))) == false) {
535 // Handle Control & Manage Frame
536
537 if (IS_TYPE_MGMT((skb->data+4))) {
538 unsigned char *pbyData1;
539 unsigned char *pbyData2;
540
541 pRxPacket->p80211Header = (PUWLAN_80211HDR)(skb->data+4);
542 pRxPacket->cbMPDULen = FrameSize;
543 pRxPacket->uRSSI = *pbyRSSI;
544 pRxPacket->bySQ = *pbySQ;
545 HIDWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(HIDWORD(*pqwTSFTime));
546 LODWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(LODWORD(*pqwTSFTime));
547 if (bIsWEP) {
548 // strip IV
549 pbyData1 = WLAN_HDR_A3_DATA_PTR(skb->data+4);
550 pbyData2 = WLAN_HDR_A3_DATA_PTR(skb->data+4) + 4;
551 for (ii = 0; ii < (FrameSize - 4); ii++) {
552 *pbyData1 = *pbyData2;
553 pbyData1++;
554 pbyData2++;
555 }
556 }
557 pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate);
558 pRxPacket->byRxChannel = (*pbyRxSts) >> 2;
559//PLICE_DEBUG->
560//EnQueue(pDevice,pRxPacket);
561
562#ifdef THREAD
563 EnQueue(pDevice, pRxPacket);
564
565 //up(&pDevice->mlme_semaphore);
566 //Enque (pDevice->FirstRecvMngList,pDevice->LastRecvMngList,pMgmt);
567#else
568
569#ifdef TASK_LET
570 EnQueue(pDevice, pRxPacket);
571 tasklet_schedule(&pDevice->RxMngWorkItem);
572#else
573 vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
574 //tasklet_schedule(&pDevice->RxMngWorkItem);
575#endif
576
577#endif
578//PLICE_DEBUG<-
579 //vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
580 // hostap Deamon handle 802.11 management
581 if (pDevice->bEnableHostapd) {
582 skb->dev = pDevice->apdev;
583 skb->data += 4;
584 skb->tail += 4;
585 skb_put(skb, FrameSize);
586 skb_reset_mac_header(skb);
587 skb->pkt_type = PACKET_OTHERHOST;
588 skb->protocol = htons(ETH_P_802_2);
589 memset(skb->cb, 0, sizeof(skb->cb));
590 netif_rx(skb);
591 return true;
592 }
593 } else {
594 // Control Frame
595 };
596 return false;
597 } else {
598 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
599 //In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC.
600 if (!(*pbyRsr & RSR_BSSIDOK)) {
601 if (bDeFragRx) {
602 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
603 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
604 pDevice->dev->name);
605 }
606 }
607 return false;
608 }
609 } else {
610 // discard DATA packet while not associate || BSSID error
611 if ((pDevice->bLinkPass == false) ||
612 !(*pbyRsr & RSR_BSSIDOK)) {
613 if (bDeFragRx) {
614 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
615 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
616 pDevice->dev->name);
617 }
618 }
619 return false;
620 }
621 //mike add:station mode check eapol-key challenge--->
622 {
623 unsigned char Protocol_Version; //802.1x Authentication
624 unsigned char Packet_Type; //802.1x Authentication
625 if (bIsWEP)
626 cbIVOffset = 8;
627 else
628 cbIVOffset = 0;
629 wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
630 skb->data[cbIVOffset + 8 + 24 + 6 + 1];
631 Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1];
632 Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 + 1 + 1];
633 if (wEtherType == ETH_P_PAE) { //Protocol Type in LLC-Header
634 if (((Protocol_Version == 1) || (Protocol_Version == 2)) &&
635 (Packet_Type == 3)) { //802.1x OR eapol-key challenge frame receive
636 bRxeapol_key = true;
637 }
638 }
639 }
640 //mike add:station mode check eapol-key challenge<---
641 }
642 }
643
644// Data frame Handle
645
646 if (pDevice->bEnablePSMode) {
647 if (IS_FC_MOREDATA((skb->data+4))) {
648 if (*pbyRsr & RSR_ADDROK) {
649 //PSbSendPSPOLL((PSDevice)pDevice);
650 }
651 } else {
652 if (pDevice->pMgmt->bInTIMWake == true) {
653 pDevice->pMgmt->bInTIMWake = false;
654 }
655 }
656 }
657
658 // Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps
659 if (pDevice->bDiversityEnable && (FrameSize > 50) &&
660 (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) &&
661 (pDevice->bLinkPass == true)) {
662 BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0);
663 }
664
665 if (pDevice->byLocalID != REV_ID_VT3253_B1) {
666 pDevice->uCurrRSSI = *pbyRSSI;
667 }
668 pDevice->byCurrSQ = *pbySQ;
669
670 if ((*pbyRSSI != 0) &&
671 (pMgmt->pCurrBSS != NULL)) {
672 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
673 // Monitor if RSSI is too strong.
674 pMgmt->pCurrBSS->byRSSIStatCnt++;
675 pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT;
676 pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm;
677 for (ii = 0; ii < RSSI_STAT_COUNT; ii++) {
678 if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0) {
679 pMgmt->pCurrBSS->ldBmMAX = max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm);
680 }
681 }
682 }
683
684 // -----------------------------------------------
685
686 if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && (pDevice->bEnable8021x == true)) {
687 unsigned char abyMacHdr[24];
688
689 // Only 802.1x packet incoming allowed
690 if (bIsWEP)
691 cbIVOffset = 8;
692 else
693 cbIVOffset = 0;
694 wEtherType = (skb->data[cbIVOffset + 4 + 24 + 6] << 8) |
695 skb->data[cbIVOffset + 4 + 24 + 6 + 1];
696
697 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "wEtherType = %04x \n", wEtherType);
698 if (wEtherType == ETH_P_PAE) {
699 skb->dev = pDevice->apdev;
700
701 if (bIsWEP == true) {
702 // strip IV header(8)
703 memcpy(&abyMacHdr[0], (skb->data + 4), 24);
704 memcpy((skb->data + 4 + cbIVOffset), &abyMacHdr[0], 24);
705 }
706 skb->data += (cbIVOffset + 4);
707 skb->tail += (cbIVOffset + 4);
708 skb_put(skb, FrameSize);
709 skb_reset_mac_header(skb);
710
711 skb->pkt_type = PACKET_OTHERHOST;
712 skb->protocol = htons(ETH_P_802_2);
713 memset(skb->cb, 0, sizeof(skb->cb));
714 netif_rx(skb);
715 return true;
716
717 }
718 // check if 802.1x authorized
719 if (!(pMgmt->sNodeDBTable[iSANodeIndex].dwFlags & WLAN_STA_AUTHORIZED))
720 return false;
721 }
722
723 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
724 if (bIsWEP) {
725 FrameSize -= 8; //MIC
726 }
727 }
728
729 //--------------------------------------------------------------------------------
730 // Soft MIC
731 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
732 if (bIsWEP) {
733 unsigned long *pdwMIC_L;
734 unsigned long *pdwMIC_R;
735 unsigned long dwMIC_Priority;
736 unsigned long dwMICKey0 = 0, dwMICKey1 = 0;
737 unsigned long dwLocalMIC_L = 0;
738 unsigned long dwLocalMIC_R = 0;
739 viawget_wpa_header *wpahdr;
740
741 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
742 dwMICKey0 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[24]));
743 dwMICKey1 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[28]));
744 } else {
745 if (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) {
746 dwMICKey0 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[16]));
747 dwMICKey1 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[20]));
748 } else if ((pKey->dwKeyIndex & BIT28) == 0) {
749 dwMICKey0 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[16]));
750 dwMICKey1 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[20]));
751 } else {
752 dwMICKey0 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[24]));
753 dwMICKey1 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[28]));
754 }
755 }
756
757 MIC_vInit(dwMICKey0, dwMICKey1);
758 MIC_vAppend((unsigned char *)&(pDevice->sRxEthHeader.abyDstAddr[0]), 12);
759 dwMIC_Priority = 0;
760 MIC_vAppend((unsigned char *)&dwMIC_Priority, 4);
761 // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV.
762 MIC_vAppend((unsigned char *)(skb->data + 4 + WLAN_HDR_ADDR3_LEN + 8),
763 FrameSize - WLAN_HDR_ADDR3_LEN - 8);
764 MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R);
765 MIC_vUnInit();
766
767 pdwMIC_L = (unsigned long *)(skb->data + 4 + FrameSize);
768 pdwMIC_R = (unsigned long *)(skb->data + 4 + FrameSize + 4);
769 //DBG_PRN_GRP12(("RxL: %lx, RxR: %lx\n", *pdwMIC_L, *pdwMIC_R));
770 //DBG_PRN_GRP12(("LocalL: %lx, LocalR: %lx\n", dwLocalMIC_L, dwLocalMIC_R));
771 //DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dwMICKey0= %lx,dwMICKey1= %lx \n", dwMICKey0, dwMICKey1);
772
773 if ((cpu_to_le32(*pdwMIC_L) != dwLocalMIC_L) || (cpu_to_le32(*pdwMIC_R) != dwLocalMIC_R) ||
774 (pDevice->bRxMICFail == true)) {
775 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "MIC comparison is fail!\n");
776 pDevice->bRxMICFail = false;
777 //pDevice->s802_11Counter.TKIPLocalMICFailures.QuadPart++;
778 pDevice->s802_11Counter.TKIPLocalMICFailures++;
779 if (bDeFragRx) {
780 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
781 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
782 pDevice->dev->name);
783 }
784 }
785 //2008-0409-07, <Add> by Einsn Liu
786#ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
787 //send event to wpa_supplicant
788 {
789 union iwreq_data wrqu;
790 struct iw_michaelmicfailure ev;
791 int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits
792 memset(&ev, 0, sizeof(ev));
793 ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
794 if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
795 (pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
796 (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
797 ev.flags |= IW_MICFAILURE_PAIRWISE;
798 } else {
799 ev.flags |= IW_MICFAILURE_GROUP;
800 }
801
802 ev.src_addr.sa_family = ARPHRD_ETHER;
803 memcpy(ev.src_addr.sa_data, pMACHeader->abyAddr2, ETH_ALEN);
804 memset(&wrqu, 0, sizeof(wrqu));
805 wrqu.data.length = sizeof(ev);
806 wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
807
808 }
809#endif
810
811 if ((pDevice->bWPADEVUp) && (pDevice->skb != NULL)) {
812 wpahdr = (viawget_wpa_header *)pDevice->skb->data;
813 if ((pDevice->pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
814 (pDevice->pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
815 (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
816 //s802_11_Status.Flags = NDIS_802_11_AUTH_REQUEST_PAIRWISE_ERROR;
817 wpahdr->type = VIAWGET_PTK_MIC_MSG;
818 } else {
819 //s802_11_Status.Flags = NDIS_802_11_AUTH_REQUEST_GROUP_ERROR;
820 wpahdr->type = VIAWGET_GTK_MIC_MSG;
821 }
822 wpahdr->resp_ie_len = 0;
823 wpahdr->req_ie_len = 0;
824 skb_put(pDevice->skb, sizeof(viawget_wpa_header));
825 pDevice->skb->dev = pDevice->wpadev;
826 skb_reset_mac_header(pDevice->skb);
827 pDevice->skb->pkt_type = PACKET_HOST;
828 pDevice->skb->protocol = htons(ETH_P_802_2);
829 memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb));
830 netif_rx(pDevice->skb);
831 pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
832 }
833
834 return false;
835
836 }
837 }
838 } //---end of SOFT MIC-----------------------------------------------------------------------
839
840 // ++++++++++ Reply Counter Check +++++++++++++
841
842 if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) ||
843 (pKey->byCipherSuite == KEY_CTL_CCMP))) {
844 if (bIsWEP) {
845 unsigned short wLocalTSC15_0 = 0;
846 unsigned long dwLocalTSC47_16 = 0;
847 unsigned long long RSC = 0;
848 // endian issues
849 RSC = *((unsigned long long *)&(pKey->KeyRSC));
850 wLocalTSC15_0 = (unsigned short)RSC;
851 dwLocalTSC47_16 = (unsigned long)(RSC>>16);
852
853 RSC = dwRxTSC47_16;
854 RSC <<= 16;
855 RSC += wRxTSC15_0;
856 memcpy(&(pKey->KeyRSC), &RSC, sizeof(QWORD));
857
858 if ((pDevice->sMgmtObj.eCurrMode == WMAC_MODE_ESS_STA) &&
859 (pDevice->sMgmtObj.eCurrState == WMAC_STATE_ASSOC)) {
860 // check RSC
861 if ((wRxTSC15_0 < wLocalTSC15_0) &&
862 (dwRxTSC47_16 <= dwLocalTSC47_16) &&
863 !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) {
864 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC is illegal~~!\n ");
865 if (pKey->byCipherSuite == KEY_CTL_TKIP)
866 //pDevice->s802_11Counter.TKIPReplays.QuadPart++;
867 pDevice->s802_11Counter.TKIPReplays++;
868 else
869 //pDevice->s802_11Counter.CCMPReplays.QuadPart++;
870 pDevice->s802_11Counter.CCMPReplays++;
871
872 if (bDeFragRx) {
873 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
874 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
875 pDevice->dev->name);
876 }
877 }
878 return false;
879 }
880 }
881 }
882 } // ----- End of Reply Counter Check --------------------------
883
884 if ((pKey != NULL) && (bIsWEP)) {
885// pDevice->s802_11Counter.DecryptSuccessCount.QuadPart++;
886 }
887
888 s_vProcessRxMACHeader(pDevice, (unsigned char *)(skb->data+4), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset);
889 FrameSize -= cbHeaderOffset;
890 cbHeaderOffset += 4; // 4 is Rcv buffer header
891
892 // Null data, framesize = 14
893 if (FrameSize < 15)
894 return false;
895
896 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
897 if (s_bAPModeRxData(pDevice,
898 skb,
899 FrameSize,
900 cbHeaderOffset,
901 iSANodeIndex,
902 iDANodeIndex
903) == false) {
904 if (bDeFragRx) {
905 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
906 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
907 pDevice->dev->name);
908 }
909 }
910 return false;
911 }
912 }
913
914 skb->data += cbHeaderOffset;
915 skb->tail += cbHeaderOffset;
916 skb_put(skb, FrameSize);
917 skb->protocol = eth_type_trans(skb, skb->dev);
918
919 //drop frame not met IEEE 802.3
920/*
921 if (pDevice->flags & DEVICE_FLAGS_VAL_PKT_LEN) {
922 if ((skb->protocol==htons(ETH_P_802_3)) &&
923 (skb->len!=htons(skb->mac.ethernet->h_proto))) {
924 pStats->rx_length_errors++;
925 pStats->rx_dropped++;
926 if (bDeFragRx) {
927 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
928 DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
929 pDevice->dev->name);
930 }
931 }
932 return false;
933 }
934 }
935*/
936
937 skb->ip_summed = CHECKSUM_NONE;
938 pStats->rx_bytes += skb->len;
939 pStats->rx_packets++;
940 netif_rx(skb);
941
942 if (bDeFragRx) {
943 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
944 DBG_PRT(MSG_LEVEL_ERR, KERN_ERR "%s: can not alloc more frag bufs\n",
945 pDevice->dev->name);
946 }
947 return false;
948 }
949
950 return true;
951}
952
953static bool s_bAPModeRxCtl(
954 PSDevice pDevice,
955 unsigned char *pbyFrame,
956 int iSANodeIndex
957)
958{
959 PS802_11Header p802_11Header;
960 CMD_STATUS Status;
961 PSMgmtObject pMgmt = pDevice->pMgmt;
962
963 if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
964 p802_11Header = (PS802_11Header)(pbyFrame);
965 if (!IS_TYPE_MGMT(pbyFrame)) {
966 // Data & PS-Poll packet
967 // check frame class
968 if (iSANodeIndex > 0) {
969 // frame class 3 fliter & checking
970 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_AUTH) {
971 // send deauth notification
972 // reason = (6) class 2 received from nonauth sta
973 vMgrDeAuthenBeginSta(pDevice,
974 pMgmt,
975 (unsigned char *)(p802_11Header->abyAddr2),
976 (WLAN_MGMT_REASON_CLASS2_NONAUTH),
977 &Status
978);
979 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 1\n");
980 return true;
981 }
982 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_ASSOC) {
983 // send deassoc notification
984 // reason = (7) class 3 received from nonassoc sta
985 vMgrDisassocBeginSta(pDevice,
986 pMgmt,
987 (unsigned char *)(p802_11Header->abyAddr2),
988 (WLAN_MGMT_REASON_CLASS3_NONASSOC),
989 &Status
990);
991 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDisassocBeginSta 2\n");
992 return true;
993 }
994
995 if (pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable) {
996 // delcare received ps-poll event
997 if (IS_CTL_PSPOLL(pbyFrame)) {
998 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
999 bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
1000 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 1\n");
1001 } else {
1002 // check Data PS state
1003 // if PW bit off, send out all PS bufferring packets.
1004 if (!IS_FC_POWERMGT(pbyFrame)) {
1005 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
1006 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
1007 bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
1008 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 2\n");
1009 }
1010 }
1011 } else {
1012 if (IS_FC_POWERMGT(pbyFrame)) {
1013 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = true;
1014 // Once if STA in PS state, enable multicast bufferring
1015 pMgmt->sNodeDBTable[0].bPSEnable = true;
1016 } else {
1017 // clear all pending PS frame.
1018 if (pMgmt->sNodeDBTable[iSANodeIndex].wEnQueueCnt > 0) {
1019 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
1020 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
1021 bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
1022 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 3\n");
1023
1024 }
1025 }
1026 }
1027 } else {
1028 vMgrDeAuthenBeginSta(pDevice,
1029 pMgmt,
1030 (unsigned char *)(p802_11Header->abyAddr2),
1031 (WLAN_MGMT_REASON_CLASS2_NONAUTH),
1032 &Status
1033);
1034 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 3\n");
1035 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "BSSID:%pM\n",
1036 p802_11Header->abyAddr3);
1037 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR2:%pM\n",
1038 p802_11Header->abyAddr2);
1039 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR1:%pM\n",
1040 p802_11Header->abyAddr1);
1041 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: wFrameCtl= %x\n", p802_11Header->wFrameCtl);
1042 VNSvInPortB(pDevice->PortOffset + MAC_REG_RCR, &(pDevice->byRxMode));
1043 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc:pDevice->byRxMode = %x\n", pDevice->byRxMode);
1044 return true;
1045 }
1046 }
1047 }
1048 return false;
1049}
1050
1051static bool s_bHandleRxEncryption(
1052 PSDevice pDevice,
1053 unsigned char *pbyFrame,
1054 unsigned int FrameSize,
1055 unsigned char *pbyRsr,
1056 unsigned char *pbyNewRsr,
1057 PSKeyItem *pKeyOut,
1058 bool *pbExtIV,
1059 unsigned short *pwRxTSC15_0,
1060 unsigned long *pdwRxTSC47_16
1061)
1062{
1063 unsigned int PayloadLen = FrameSize;
1064 unsigned char *pbyIV;
1065 unsigned char byKeyIdx;
1066 PSKeyItem pKey = NULL;
1067 unsigned char byDecMode = KEY_CTL_WEP;
1068 PSMgmtObject pMgmt = pDevice->pMgmt;
1069
1070 *pwRxTSC15_0 = 0;
1071 *pdwRxTSC47_16 = 0;
1072
1073 pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1074 if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1075 WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
1076 pbyIV += 6; // 6 is 802.11 address4
1077 PayloadLen -= 6;
1078 }
1079 byKeyIdx = (*(pbyIV+3) & 0xc0);
1080 byKeyIdx >>= 6;
1081 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "\nKeyIdx: %d\n", byKeyIdx);
1082
1083 if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
1084 (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
1085 (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
1086 (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
1087 (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
1088 if (((*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) &&
1089 (pDevice->pMgmt->byCSSPK != KEY_CTL_NONE)) {
1090 // unicast pkt use pairwise key
1091 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "unicast pkt\n");
1092 if (KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, 0xFFFFFFFF, &pKey) == true) {
1093 if (pDevice->pMgmt->byCSSPK == KEY_CTL_TKIP)
1094 byDecMode = KEY_CTL_TKIP;
1095 else if (pDevice->pMgmt->byCSSPK == KEY_CTL_CCMP)
1096 byDecMode = KEY_CTL_CCMP;
1097 }
1098 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "unicast pkt: %d, %p\n", byDecMode, pKey);
1099 } else {
1100 // use group key
1101 KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, byKeyIdx, &pKey);
1102 if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1103 byDecMode = KEY_CTL_TKIP;
1104 else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1105 byDecMode = KEY_CTL_CCMP;
1106 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "group pkt: %d, %d, %p\n", byKeyIdx, byDecMode, pKey);
1107 }
1108 }
1109 // our WEP only support Default Key
1110 if (pKey == NULL) {
1111 // use default group key
1112 KeybGetKey(&(pDevice->sKey), pDevice->abyBroadcastAddr, byKeyIdx, &pKey);
1113 if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1114 byDecMode = KEY_CTL_TKIP;
1115 else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1116 byDecMode = KEY_CTL_CCMP;
1117 }
1118 *pKeyOut = pKey;
1119
1120 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1121
1122 if (pKey == NULL) {
1123 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "pKey == NULL\n");
1124 if (byDecMode == KEY_CTL_WEP) {
1125// pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1126 } else if (pDevice->bLinkPass == true) {
1127// pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1128 }
1129 return false;
1130 }
1131 if (byDecMode != pKey->byCipherSuite) {
1132 if (byDecMode == KEY_CTL_WEP) {
1133// pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1134 } else if (pDevice->bLinkPass == true) {
1135// pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1136 }
1137 *pKeyOut = NULL;
1138 return false;
1139 }
1140 if (byDecMode == KEY_CTL_WEP) {
1141 // handle WEP
1142 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1143 (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) {
1144 // Software WEP
1145 // 1. 3253A
1146 // 2. WEP 256
1147
1148 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1149 memcpy(pDevice->abyPRNG, pbyIV, 3);
1150 memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1151 rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1152 rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1153
1154 if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) {
1155 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1156 }
1157 }
1158 } else if ((byDecMode == KEY_CTL_TKIP) ||
1159 (byDecMode == KEY_CTL_CCMP)) {
1160 // TKIP/AES
1161
1162 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1163 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1164 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ExtIV: %lx\n", *pdwRxTSC47_16);
1165 if (byDecMode == KEY_CTL_TKIP) {
1166 *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV + 2), *pbyIV));
1167 } else {
1168 *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1169 }
1170 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC0_15: %x\n", *pwRxTSC15_0);
1171
1172 if ((byDecMode == KEY_CTL_TKIP) &&
1173 (pDevice->byLocalID <= REV_ID_VT3253_A1)) {
1174 // Software TKIP
1175 // 1. 3253 A
1176 PS802_11Header pMACHeader = (PS802_11Header)(pbyFrame);
1177 TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1178 rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1179 rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1180 if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1181 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1182 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV OK!\n");
1183 } else {
1184 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV FAIL!!!\n");
1185 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PayloadLen = %d\n", PayloadLen);
1186 }
1187 }
1188 }// end of TKIP/AES
1189
1190 if ((*(pbyIV+3) & 0x20) != 0)
1191 *pbExtIV = true;
1192 return true;
1193}
1194
1195static bool s_bHostWepRxEncryption(
1196 PSDevice pDevice,
1197 unsigned char *pbyFrame,
1198 unsigned int FrameSize,
1199 unsigned char *pbyRsr,
1200 bool bOnFly,
1201 PSKeyItem pKey,
1202 unsigned char *pbyNewRsr,
1203 bool *pbExtIV,
1204 unsigned short *pwRxTSC15_0,
1205 unsigned long *pdwRxTSC47_16
1206)
1207{
1208 unsigned int PayloadLen = FrameSize;
1209 unsigned char *pbyIV;
1210 unsigned char byKeyIdx;
1211 unsigned char byDecMode = KEY_CTL_WEP;
1212 PS802_11Header pMACHeader;
1213
1214 *pwRxTSC15_0 = 0;
1215 *pdwRxTSC47_16 = 0;
1216
1217 pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1218 if (WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1219 WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame)) {
1220 pbyIV += 6; // 6 is 802.11 address4
1221 PayloadLen -= 6;
1222 }
1223 byKeyIdx = (*(pbyIV+3) & 0xc0);
1224 byKeyIdx >>= 6;
1225 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "\nKeyIdx: %d\n", byKeyIdx);
1226
1227 if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1228 byDecMode = KEY_CTL_TKIP;
1229 else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1230 byDecMode = KEY_CTL_CCMP;
1231
1232 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1233
1234 if (byDecMode != pKey->byCipherSuite) {
1235 if (byDecMode == KEY_CTL_WEP) {
1236// pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1237 } else if (pDevice->bLinkPass == true) {
1238// pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1239 }
1240 return false;
1241 }
1242
1243 if (byDecMode == KEY_CTL_WEP) {
1244 // handle WEP
1245 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "byDecMode == KEY_CTL_WEP \n");
1246 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1247 (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true) ||
1248 (bOnFly == false)) {
1249 // Software WEP
1250 // 1. 3253A
1251 // 2. WEP 256
1252 // 3. NotOnFly
1253
1254 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1255 memcpy(pDevice->abyPRNG, pbyIV, 3);
1256 memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1257 rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1258 rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1259
1260 if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) {
1261 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1262 }
1263 }
1264 } else if ((byDecMode == KEY_CTL_TKIP) ||
1265 (byDecMode == KEY_CTL_CCMP)) {
1266 // TKIP/AES
1267
1268 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1269 *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1270 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ExtIV: %lx\n", *pdwRxTSC47_16);
1271
1272 if (byDecMode == KEY_CTL_TKIP) {
1273 *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1274 } else {
1275 *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1276 }
1277 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "TSC0_15: %x\n", *pwRxTSC15_0);
1278
1279 if (byDecMode == KEY_CTL_TKIP) {
1280 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || (bOnFly == false)) {
1281 // Software TKIP
1282 // 1. 3253 A
1283 // 2. NotOnFly
1284 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "soft KEY_CTL_TKIP \n");
1285 pMACHeader = (PS802_11Header)(pbyFrame);
1286 TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1287 rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1288 rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1289 if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1290 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1291 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV OK!\n");
1292 } else {
1293 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ICV FAIL!!!\n");
1294 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "PayloadLen = %d\n", PayloadLen);
1295 }
1296 }
1297 }
1298
1299 if (byDecMode == KEY_CTL_CCMP) {
1300 if (bOnFly == false) {
1301 // Software CCMP
1302 // NotOnFly
1303 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "soft KEY_CTL_CCMP\n");
1304 if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) {
1305 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1306 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "CCMP MIC compare OK!\n");
1307 } else {
1308 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "CCMP MIC fail!\n");
1309 }
1310 }
1311 }
1312
1313 }// end of TKIP/AES
1314
1315 if ((*(pbyIV+3) & 0x20) != 0)
1316 *pbExtIV = true;
1317 return true;
1318}
1319
1320static bool s_bAPModeRxData(
1321 PSDevice pDevice,
1322 struct sk_buff *skb,
1323 unsigned int FrameSize,
1324 unsigned int cbHeaderOffset,
1325 int iSANodeIndex,
1326 int iDANodeIndex
1327)
1328{
1329 PSMgmtObject pMgmt = pDevice->pMgmt;
1330 bool bRelayAndForward = false;
1331 bool bRelayOnly = false;
1332 unsigned char byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
1333 unsigned short wAID;
1334
1335 struct sk_buff *skbcpy = NULL;
1336
1337 if (FrameSize > CB_MAX_BUF_SIZE)
1338 return false;
1339 // check DA
1340 if (is_multicast_ether_addr((unsigned char *)(skb->data+cbHeaderOffset))) {
1341 if (pMgmt->sNodeDBTable[0].bPSEnable) {
1342 skbcpy = dev_alloc_skb((int)pDevice->rx_buf_sz);
1343
1344 // if any node in PS mode, buffer packet until DTIM.
1345 if (skbcpy == NULL) {
1346 DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "relay multicast no skb available \n");
1347 } else {
1348 skbcpy->dev = pDevice->dev;
1349 skbcpy->len = FrameSize;
1350 memcpy(skbcpy->data, skb->data+cbHeaderOffset, FrameSize);
1351 skb_queue_tail(&(pMgmt->sNodeDBTable[0].sTxPSQueue), skbcpy);
1352
1353 pMgmt->sNodeDBTable[0].wEnQueueCnt++;
1354 // set tx map
1355 pMgmt->abyPSTxMap[0] |= byMask[0];
1356 }
1357 } else {
1358 bRelayAndForward = true;
1359 }
1360 } else {
1361 // check if relay
1362 if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(skb->data+cbHeaderOffset), &iDANodeIndex)) {
1363 if (pMgmt->sNodeDBTable[iDANodeIndex].eNodeState >= NODE_ASSOC) {
1364 if (pMgmt->sNodeDBTable[iDANodeIndex].bPSEnable) {
1365 // queue this skb until next PS tx, and then release.
1366
1367 skb->data += cbHeaderOffset;
1368 skb->tail += cbHeaderOffset;
1369 skb_put(skb, FrameSize);
1370 skb_queue_tail(&pMgmt->sNodeDBTable[iDANodeIndex].sTxPSQueue, skb);
1371 pMgmt->sNodeDBTable[iDANodeIndex].wEnQueueCnt++;
1372 wAID = pMgmt->sNodeDBTable[iDANodeIndex].wAID;
1373 pMgmt->abyPSTxMap[wAID >> 3] |= byMask[wAID & 7];
1374 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "relay: index= %d, pMgmt->abyPSTxMap[%d]= %d\n",
1375 iDANodeIndex, (wAID >> 3), pMgmt->abyPSTxMap[wAID >> 3]);
1376 return true;
1377 } else {
1378 bRelayOnly = true;
1379 }
1380 }
1381 }
1382 }
1383
1384 if (bRelayOnly || bRelayAndForward) {
1385 // relay this packet right now
1386 if (bRelayAndForward)
1387 iDANodeIndex = 0;
1388
1389 if ((pDevice->uAssocCount > 1) && (iDANodeIndex >= 0)) {
1390 ROUTEbRelay(pDevice, (unsigned char *)(skb->data + cbHeaderOffset), FrameSize, (unsigned int)iDANodeIndex);
1391 }
1392
1393 if (bRelayOnly)
1394 return false;
1395 }
1396 // none associate, don't forward
1397 if (pDevice->uAssocCount == 0)
1398 return false;
1399
1400 return true;
1401}